diff options
105 files changed, 3058 insertions, 1797 deletions
diff --git a/Documentation/process/adding-syscalls.rst b/Documentation/process/adding-syscalls.rst index 8cc25a0..314c8bf 100644 --- a/Documentation/process/adding-syscalls.rst +++ b/Documentation/process/adding-syscalls.rst @@ -222,7 +222,7 @@ your new syscall number may get adjusted to resolve conflicts. The file ``kernel/sys_ni.c`` provides a fallback stub implementation of each system call, returning ``-ENOSYS``. Add your new system call here too:: - cond_syscall(sys_xyzzy); + COND_SYSCALL(xyzzy); Your new kernel functionality, and the system call that controls it, should normally be optional, so add a ``CONFIG`` option (typically to @@ -487,6 +487,38 @@ patchset, for the convenience of reviewers. The man page should be cc'ed to linux-man@vger.kernel.org For more details, see https://www.kernel.org/doc/man-pages/patches.html + +Do not call System Calls in the Kernel +-------------------------------------- + +System calls are, as stated above, interaction points between userspace and +the kernel. Therefore, system call functions such as ``sys_xyzzy()`` or +``compat_sys_xyzzy()`` should only be called from userspace via the syscall +table, but not from elsewhere in the kernel. If the syscall functionality is +useful to be used within the kernel, needs to be shared between an old and a +new syscall, or needs to be shared between a syscall and its compatibility +variant, it should be implemented by means of a "helper" function (such as +``kern_xyzzy()``). This kernel function may then be called within the +syscall stub (``sys_xyzzy()``), the compatibility syscall stub +(``compat_sys_xyzzy()``), and/or other kernel code. + +At least on 64-bit x86, it will be a hard requirement from v4.17 onwards to not +call system call functions in the kernel. It uses a different calling +convention for system calls where ``struct pt_regs`` is decoded on-the-fly in a +syscall wrapper which then hands processing over to the actual syscall function. +This means that only those parameters which are actually needed for a specific +syscall are passed on during syscall entry, instead of filling in six CPU +registers with random user space content all the time (which may cause serious +trouble down the call chain). + +Moreover, rules on how data may be accessed may differ between kernel data and +user data. This is another reason why calling ``sys_xyzzy()`` is generally a +bad idea. + +Exceptions to this rule are only allowed in architecture-specific overrides, +architecture-specific compatibility wrappers, or other code in arch/. + + References and Sources ---------------------- diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index fa1a392..89faa6f 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -189,7 +189,7 @@ SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len, goto out; if (off & ~PAGE_MASK) goto out; - ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + ret = ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); out: return ret; } diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c index 3151f56..bdf7514 100644 --- a/arch/arm/kernel/sys_arm.c +++ b/arch/arm/kernel/sys_arm.c @@ -35,5 +35,5 @@ asmlinkage long sys_arm_fadvise64_64(int fd, int advice, loff_t offset, loff_t len) { - return sys_fadvise64_64(fd, offset, len, advice); + return ksys_fadvise64_64(fd, offset, len, advice); } diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c index 26fe8ea..72981ba 100644 --- a/arch/arm64/kernel/sys.c +++ b/arch/arm64/kernel/sys.c @@ -34,7 +34,7 @@ asmlinkage long sys_mmap(unsigned long addr, unsigned long len, if (offset_in_page(off) != 0) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); } SYSCALL_DEFINE1(arm64_personality, unsigned int, personality) diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c index 085adfc..9ebe1d6 100644 --- a/arch/ia64/kernel/sys_ia64.c +++ b/arch/ia64/kernel/sys_ia64.c @@ -139,7 +139,7 @@ int ia64_mmap_check(unsigned long addr, unsigned long len, asmlinkage unsigned long sys_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, long pgoff) { - addr = sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); + addr = ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); if (!IS_ERR((void *) addr)) force_successful_syscall_return(); return addr; @@ -151,7 +151,7 @@ sys_mmap (unsigned long addr, unsigned long len, int prot, int flags, int fd, lo if (offset_in_page(off) != 0) return -EINVAL; - addr = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + addr = ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); if (!IS_ERR((void *) addr)) force_successful_syscall_return(); return addr; diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c index 27e10af..6363ec8 100644 --- a/arch/m68k/kernel/sys_m68k.c +++ b/arch/m68k/kernel/sys_m68k.c @@ -46,7 +46,7 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, * so we need to shift the argument down by 1; m68k mmap64(3) * (in libc) expects the last argument of mmap2 in 4Kb units. */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); } /* Convert virtual (user) address VADDR to physical address PADDR */ diff --git a/arch/microblaze/kernel/sys_microblaze.c b/arch/microblaze/kernel/sys_microblaze.c index f1e1f66..ed9f34d 100644 --- a/arch/microblaze/kernel/sys_microblaze.c +++ b/arch/microblaze/kernel/sys_microblaze.c @@ -40,7 +40,7 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, if (pgoff & ~PAGE_MASK) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT); } SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, @@ -50,6 +50,6 @@ SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, if (pgoff & (~PAGE_MASK >> 12)) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, - pgoff >> (PAGE_SHIFT - 12)); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + pgoff >> (PAGE_SHIFT - 12)); } diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index b332f6f..318f1c0 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -67,8 +67,8 @@ SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len, { if (pgoff & (~PAGE_MASK >> 12)) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, - pgoff >> (PAGE_SHIFT-12)); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + pgoff >> (PAGE_SHIFT-12)); } #define RLIM_INFINITY32 0x7fffffff @@ -82,13 +82,13 @@ struct rlimit32 { SYSCALL_DEFINE4(32_truncate64, const char __user *, path, unsigned long, __dummy, unsigned long, a2, unsigned long, a3) { - return sys_truncate(path, merge_64(a2, a3)); + return ksys_truncate(path, merge_64(a2, a3)); } SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy, unsigned long, a2, unsigned long, a3) { - return sys_ftruncate(fd, merge_64(a2, a3)); + return ksys_ftruncate(fd, merge_64(a2, a3)); } SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high, @@ -105,13 +105,13 @@ SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high, SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count, unsigned long, unused, unsigned long, a4, unsigned long, a5) { - return sys_pread64(fd, buf, count, merge_64(a4, a5)); + return ksys_pread64(fd, buf, count, merge_64(a4, a5)); } SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf, size_t, count, u32, unused, u64, a4, u64, a5) { - return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); + return ksys_pwrite64(fd, buf, count, merge_64(a4, a5)); } SYSCALL_DEFINE1(32_personality, unsigned long, personality) @@ -131,7 +131,7 @@ SYSCALL_DEFINE1(32_personality, unsigned long, personality) asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, size_t count) { - return sys_readahead(fd, merge_64(a2, a3), count); + return ksys_readahead(fd, merge_64(a2, a3), count); } asmlinkage long sys32_sync_file_range(int fd, int __pad, @@ -139,7 +139,7 @@ asmlinkage long sys32_sync_file_range(int fd, int __pad, unsigned long a4, unsigned long a5, int flags) { - return sys_sync_file_range(fd, + return ksys_sync_file_range(fd, merge_64(a2, a3), merge_64(a4, a5), flags); } @@ -149,7 +149,7 @@ asmlinkage long sys32_fadvise64_64(int fd, int __pad, unsigned long a4, unsigned long a5, int flags) { - return sys_fadvise64_64(fd, + return ksys_fadvise64_64(fd, merge_64(a2, a3), merge_64(a4, a5), flags); } @@ -157,6 +157,6 @@ asmlinkage long sys32_fadvise64_64(int fd, int __pad, asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, unsigned offset_a3, unsigned len_a4, unsigned len_a5) { - return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), - merge_64(len_a4, len_a5)); + return ksys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), + merge_64(len_a4, len_a5)); } diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c index 58c6f63..69c17b5 100644 --- a/arch/mips/kernel/syscall.c +++ b/arch/mips/kernel/syscall.c @@ -63,7 +63,8 @@ SYSCALL_DEFINE6(mips_mmap, unsigned long, addr, unsigned long, len, { if (offset & ~PAGE_MASK) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + offset >> PAGE_SHIFT); } SYSCALL_DEFINE6(mips_mmap2, unsigned long, addr, unsigned long, len, @@ -73,7 +74,8 @@ SYSCALL_DEFINE6(mips_mmap2, unsigned long, addr, unsigned long, len, if (pgoff & (~PAGE_MASK >> 12)) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> (PAGE_SHIFT-12)); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + pgoff >> (PAGE_SHIFT - 12)); } save_static_function(sys_fork); diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index 378a754..8c99ebb 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -270,8 +270,8 @@ asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len, { /* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE we have. */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, - pgoff >> (PAGE_SHIFT - 12)); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + pgoff >> (PAGE_SHIFT - 12)); } asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len, @@ -279,7 +279,7 @@ asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len, unsigned long offset) { if (!(offset & ~PAGE_MASK)) { - return sys_mmap_pgoff(addr, len, prot, flags, fd, + return ksys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT); } else { return -EINVAL; @@ -292,24 +292,24 @@ asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len, asmlinkage long parisc_truncate64(const char __user * path, unsigned int high, unsigned int low) { - return sys_truncate(path, (long)high << 32 | low); + return ksys_truncate(path, (long)high << 32 | low); } asmlinkage long parisc_ftruncate64(unsigned int fd, unsigned int high, unsigned int low) { - return sys_ftruncate(fd, (long)high << 32 | low); + return ksys_ftruncate(fd, (long)high << 32 | low); } /* stubs for the benefit of the syscall_table since truncate64 and truncate * are identical on LP64 */ asmlinkage long sys_truncate64(const char __user * path, unsigned long length) { - return sys_truncate(path, length); + return ksys_truncate(path, length); } asmlinkage long sys_ftruncate64(unsigned int fd, unsigned long length) { - return sys_ftruncate(fd, length); + return ksys_ftruncate(fd, length); } asmlinkage long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg) { @@ -320,7 +320,7 @@ asmlinkage long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg asmlinkage long parisc_truncate64(const char __user * path, unsigned int high, unsigned int low) { - return sys_truncate64(path, (loff_t)high << 32 | low); + return ksys_truncate(path, (loff_t)high << 32 | low); } asmlinkage long parisc_ftruncate64(unsigned int fd, @@ -333,26 +333,26 @@ asmlinkage long parisc_ftruncate64(unsigned int fd, asmlinkage ssize_t parisc_pread64(unsigned int fd, char __user *buf, size_t count, unsigned int high, unsigned int low) { - return sys_pread64(fd, buf, count, (loff_t)high << 32 | low); + return ksys_pread64(fd, buf, count, (loff_t)high << 32 | low); } asmlinkage ssize_t parisc_pwrite64(unsigned int fd, const char __user *buf, size_t count, unsigned int high, unsigned int low) { - return sys_pwrite64(fd, buf, count, (loff_t)high << 32 | low); + return ksys_pwrite64(fd, buf, count, (loff_t)high << 32 | low); } asmlinkage ssize_t parisc_readahead(int fd, unsigned int high, unsigned int low, size_t count) { - return sys_readahead(fd, (loff_t)high << 32 | low, count); + return ksys_readahead(fd, (loff_t)high << 32 | low, count); } asmlinkage long parisc_fadvise64_64(int fd, unsigned int high_off, unsigned int low_off, unsigned int high_len, unsigned int low_len, int advice) { - return sys_fadvise64_64(fd, (loff_t)high_off << 32 | low_off, + return ksys_fadvise64_64(fd, (loff_t)high_off << 32 | low_off, (loff_t)high_len << 32 | low_len, advice); } @@ -360,15 +360,15 @@ asmlinkage long parisc_sync_file_range(int fd, u32 hi_off, u32 lo_off, u32 hi_nbytes, u32 lo_nbytes, unsigned int flags) { - return sys_sync_file_range(fd, (loff_t)hi_off << 32 | lo_off, + return ksys_sync_file_range(fd, (loff_t)hi_off << 32 | lo_off, (loff_t)hi_nbytes << 32 | lo_nbytes, flags); } asmlinkage long parisc_fallocate(int fd, int mode, u32 offhi, u32 offlo, u32 lenhi, u32 lenlo) { - return sys_fallocate(fd, mode, ((u64)offhi << 32) | offlo, - ((u64)lenhi << 32) | lenlo); + return ksys_fallocate(fd, mode, ((u64)offhi << 32) | offlo, + ((u64)lenhi << 32) | lenlo); } long parisc_personality(unsigned long personality) diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c index 15f216d..c11c733 100644 --- a/arch/powerpc/kernel/sys_ppc32.c +++ b/arch/powerpc/kernel/sys_ppc32.c @@ -77,44 +77,44 @@ unsigned long compat_sys_mmap2(unsigned long addr, size_t len, compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count, u32 reg6, u32 poshi, u32 poslo) { - return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); + return ksys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); } compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count, u32 reg6, u32 poshi, u32 poslo) { - return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); + return ksys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); } compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count) { - return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count); + return ksys_readahead(fd, ((loff_t)offhi << 32) | offlo, count); } asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4, unsigned long high, unsigned long low) { - return sys_truncate(path, (high << 32) | low); + return ksys_truncate(path, (high << 32) | low); } asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, u32 lenhi, u32 lenlo) { - return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, + return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, ((loff_t)lenhi << 32) | lenlo); } asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high, unsigned long low) { - return sys_ftruncate(fd, (high << 32) | low); + return ksys_ftruncate(fd, (high << 32) | low); } long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low, size_t len, int advice) { - return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len, - advice); + return ksys_fadvise64_64(fd, (u64)offset_high << 32 | offset_low, len, + advice); } asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags, @@ -124,5 +124,5 @@ asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags, loff_t offset = ((loff_t)offset_hi << 32) | offset_lo; loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo; - return sys_sync_file_range(fd, offset, nbytes, flags); + return ksys_sync_file_range(fd, offset, nbytes, flags); } diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c index a877bf8..1ef3b80 100644 --- a/arch/powerpc/kernel/syscalls.c +++ b/arch/powerpc/kernel/syscalls.c @@ -57,7 +57,7 @@ static inline long do_mmap2(unsigned long addr, size_t len, off >>= shift; } - ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off); + ret = ksys_mmap_pgoff(addr, len, prot, flags, fd, off); out: return ret; } @@ -119,8 +119,8 @@ long ppc64_personality(unsigned long personality) long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low, u32 len_high, u32 len_low) { - return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, - (u64)len_high << 32 | len_low, advice); + return ksys_fadvise64_64(fd, (u64)offset_high << 32 | offset_low, + (u64)len_high << 32 | len_low, advice); } long sys_switch_endian(void) diff --git a/arch/riscv/kernel/sys_riscv.c b/arch/riscv/kernel/sys_riscv.c index 79c7866..f7181ed 100644 --- a/arch/riscv/kernel/sys_riscv.c +++ b/arch/riscv/kernel/sys_riscv.c @@ -24,8 +24,8 @@ static long riscv_sys_mmap(unsigned long addr, unsigned long len, { if (unlikely(offset & (~PAGE_MASK >> page_shift_offset))) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, - offset >> (PAGE_SHIFT - page_shift_offset)); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + offset >> (PAGE_SHIFT - page_shift_offset)); } #ifdef CONFIG_64BIT diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index 79b7a34..8ac38d5 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -89,18 +89,18 @@ COMPAT_SYSCALL_DEFINE3(s390_chown16, const char __user *, filename, u16, user, u16, group) { - return sys_chown(filename, low2highuid(user), low2highgid(group)); + return ksys_chown(filename, low2highuid(user), low2highgid(group)); } COMPAT_SYSCALL_DEFINE3(s390_lchown16, const char __user *, filename, u16, user, u16, group) { - return sys_lchown(filename, low2highuid(user), low2highgid(group)); + return ksys_lchown(filename, low2highuid(user), low2highgid(group)); } COMPAT_SYSCALL_DEFINE3(s390_fchown16, unsigned int, fd, u16, user, u16, group) { - return sys_fchown(fd, low2highuid(user), low2highgid(group)); + return ksys_fchown(fd, low2highuid(user), low2highgid(group)); } COMPAT_SYSCALL_DEFINE2(s390_setregid16, u16, rgid, u16, egid) @@ -302,12 +302,12 @@ COMPAT_SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, compat_ulong_t, second, COMPAT_SYSCALL_DEFINE3(s390_truncate64, const char __user *, path, u32, high, u32, low) { - return sys_truncate(path, (unsigned long)high << 32 | low); + return ksys_truncate(path, (unsigned long)high << 32 | low); } COMPAT_SYSCALL_DEFINE3(s390_ftruncate64, unsigned int, fd, u32, high, u32, low) { - return sys_ftruncate(fd, (unsigned long)high << 32 | low); + return ksys_ftruncate(fd, (unsigned long)high << 32 | low); } COMPAT_SYSCALL_DEFINE5(s390_pread64, unsigned int, fd, char __user *, ubuf, @@ -315,7 +315,7 @@ COMPAT_SYSCALL_DEFINE5(s390_pread64, unsigned int, fd, char __user *, ubuf, { if ((compat_ssize_t) count < 0) return -EINVAL; - return sys_pread64(fd, ubuf, count, (unsigned long)high << 32 | low); + return ksys_pread64(fd, ubuf, count, (unsigned long)high << 32 | low); } COMPAT_SYSCALL_DEFINE5(s390_pwrite64, unsigned int, fd, const char __user *, ubuf, @@ -323,12 +323,12 @@ COMPAT_SYSCALL_DEFINE5(s390_pwrite64, unsigned int, fd, const char __user *, ubu { if ((compat_ssize_t) count < 0) return -EINVAL; - return sys_pwrite64(fd, ubuf, count, (unsigned long)high << 32 | low); + return ksys_pwrite64(fd, ubuf, count, (unsigned long)high << 32 | low); } COMPAT_SYSCALL_DEFINE4(s390_readahead, int, fd, u32, high, u32, low, s32, count) { - return sys_readahead(fd, (unsigned long)high << 32 | low, count); + return ksys_readahead(fd, (unsigned long)high << 32 | low, count); } struct stat64_emu31 { @@ -442,8 +442,8 @@ COMPAT_SYSCALL_DEFINE1(s390_old_mmap, struct mmap_arg_struct_emu31 __user *, arg return -EFAULT; if (a.offset & ~PAGE_MASK) return -EINVAL; - return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, - a.offset >> PAGE_SHIFT); + return ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, + a.offset >> PAGE_SHIFT); } COMPAT_SYSCALL_DEFINE1(s390_mmap2, struct mmap_arg_struct_emu31 __user *, arg) @@ -452,7 +452,7 @@ COMPAT_SYSCALL_DEFINE1(s390_mmap2, struct mmap_arg_struct_emu31 __user *, arg) if (copy_from_user(&a, arg, sizeof(a))) return -EFAULT; - return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset); + return ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset); } COMPAT_SYSCALL_DEFINE3(s390_read, unsigned int, fd, char __user *, buf, compat_size_t, count) @@ -460,7 +460,7 @@ COMPAT_SYSCALL_DEFINE3(s390_read, unsigned int, fd, char __user *, buf, compat_s if ((compat_ssize_t) count < 0) return -EINVAL; - return sys_read(fd, buf, count); + return ksys_read(fd, buf, count); } COMPAT_SYSCALL_DEFINE3(s390_write, unsigned int, fd, const char __user *, buf, compat_size_t, count) @@ -468,7 +468,7 @@ COMPAT_SYSCALL_DEFINE3(s390_write, unsigned int, fd, const char __user *, buf, c if ((compat_ssize_t) count < 0) return -EINVAL; - return sys_write(fd, buf, count); + return ksys_write(fd, buf, count); } /* @@ -483,7 +483,8 @@ COMPAT_SYSCALL_DEFINE5(s390_fadvise64, int, fd, u32, high, u32, low, compat_size advise = POSIX_FADV_DONTNEED; else if (advise == 5) advise = POSIX_FADV_NOREUSE; - return sys_fadvise64(fd, (unsigned long)high << 32 | low, len, advise); + return ksys_fadvise64_64(fd, (unsigned long)high << 32 | low, len, + advise); } struct fadvise64_64_args { @@ -503,19 +504,19 @@ COMPAT_SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, arg a.advice = POSIX_FADV_DONTNEED; else if (a.advice == 5) a.advice = POSIX_FADV_NOREUSE; - return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice); + return ksys_fadvise64_64(a.fd, a.offset, a.len, a.advice); } COMPAT_SYSCALL_DEFINE6(s390_sync_file_range, int, fd, u32, offhigh, u32, offlow, u32, nhigh, u32, nlow, unsigned int, flags) { - return sys_sync_file_range(fd, ((loff_t)offhigh << 32) + offlow, + return ksys_sync_file_range(fd, ((loff_t)offhigh << 32) + offlow, ((u64)nhigh << 32) + nlow, flags); } COMPAT_SYSCALL_DEFINE6(s390_fallocate, int, fd, int, mode, u32, offhigh, u32, offlow, u32, lenhigh, u32, lenlow) { - return sys_fallocate(fd, mode, ((loff_t)offhigh << 32) + offlow, - ((u64)lenhigh << 32) + lenlow); + return ksys_fallocate(fd, mode, ((loff_t)offhigh << 32) + offlow, + ((u64)lenhigh << 32) + lenlow); } diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c index 0090037..31cefe0 100644 --- a/arch/s390/kernel/sys_s390.c +++ b/arch/s390/kernel/sys_s390.c @@ -53,7 +53,7 @@ SYSCALL_DEFINE1(mmap2, struct s390_mmap_arg_struct __user *, arg) if (copy_from_user(&a, arg, sizeof(a))) goto out; - error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset); + error = ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset); out: return error; } diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c index 724911c..f8afc01 100644 --- a/arch/sh/kernel/sys_sh.c +++ b/arch/sh/kernel/sys_sh.c @@ -35,7 +35,7 @@ asmlinkage int old_mmap(unsigned long addr, unsigned long len, { if (off & ~PAGE_MASK) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, off>>PAGE_SHIFT); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, off>>PAGE_SHIFT); } asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, @@ -51,7 +51,7 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, pgoff >>= PAGE_SHIFT - 12; - return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); } /* sys_cacheflush -- flush (part of) the processor cache. */ diff --git a/arch/sh/kernel/sys_sh32.c b/arch/sh/kernel/sys_sh32.c index f8dc8bf..9dca568 100644 --- a/arch/sh/kernel/sys_sh32.c +++ b/arch/sh/kernel/sys_sh32.c @@ -39,23 +39,23 @@ asmlinkage int sys_sh_pipe(void) asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char __user *buf, size_t count, long dummy, loff_t pos) { - return sys_pread64(fd, buf, count, pos); + return ksys_pread64(fd, buf, count, pos); } asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char __user *buf, size_t count, long dummy, loff_t pos) { - return sys_pwrite64(fd, buf, count, pos); + return ksys_pwrite64(fd, buf, count, pos); } asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1, u32 len0, u32 len1, int advice) { #ifdef __LITTLE_ENDIAN__ - return sys_fadvise64_64(fd, (u64)offset1 << 32 | offset0, - (u64)len1 << 32 | len0, advice); + return ksys_fadvise64_64(fd, (u64)offset1 << 32 | offset0, + (u64)len1 << 32 | len0, advice); #else - return sys_fadvise64_64(fd, (u64)offset0 << 32 | offset1, - (u64)len0 << 32 | len1, advice); + return ksys_fadvise64_64(fd, (u64)offset0 << 32 | offset1, + (u64)len0 << 32 | len1, advice); #endif } diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c index 2e3a3e2..13664c3 100644 --- a/arch/sparc/kernel/setup_32.c +++ b/arch/sparc/kernel/setup_32.c @@ -86,7 +86,7 @@ static void prom_sync_me(void) show_free_areas(0, NULL); if (!is_idle_task(current)) { local_irq_enable(); - sys_sync(); + ksys_sync(); local_irq_disable(); } prom_printf("Returning to prom\n"); diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index 6d964bd..f166e5b 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -57,7 +57,7 @@ asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, u if ((int)high < 0) return -EINVAL; else - return sys_truncate(path, (high << 32) | low); + return ksys_truncate(path, (high << 32) | low); } asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) @@ -65,7 +65,7 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned if ((int)high < 0) return -EINVAL; else - return sys_ftruncate(fd, (high << 32) | low); + return ksys_ftruncate(fd, (high << 32) | low); } static int cp_compat_stat64(struct kstat *stat, @@ -200,7 +200,7 @@ asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, unsigned long poshi, unsigned long poslo) { - return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); + return ksys_pread64(fd, ubuf, count, (poshi << 32) | poslo); } asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, @@ -209,7 +209,7 @@ asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, unsigned long poshi, unsigned long poslo) { - return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); + return ksys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); } asmlinkage long compat_sys_readahead(int fd, @@ -217,7 +217,7 @@ asmlinkage long compat_sys_readahead(int fd, unsigned long offlo, compat_size_t count) { - return sys_readahead(fd, (offhi << 32) | offlo, count); + return ksys_readahead(fd, (offhi << 32) | offlo, count); } long compat_sys_fadvise64(int fd, @@ -225,7 +225,7 @@ long compat_sys_fadvise64(int fd, unsigned long offlo, compat_size_t len, int advice) { - return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); + return ksys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); } long compat_sys_fadvise64_64(int fd, @@ -233,15 +233,15 @@ long compat_sys_fadvise64_64(int fd, unsigned long lenhi, unsigned long lenlo, int advice) { - return sys_fadvise64_64(fd, - (offhi << 32) | offlo, - (lenhi << 32) | lenlo, - advice); + return ksys_fadvise64_64(fd, + (offhi << 32) | offlo, + (lenhi << 32) | lenlo, + advice); } long sys32_sync_file_range(unsigned int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, unsigned int flags) { - return sys_sync_file_range(fd, + return ksys_sync_file_range(fd, (off_high << 32) | off_low, (nb_high << 32) | nb_low, flags); @@ -250,6 +250,6 @@ long sys32_sync_file_range(unsigned int fd, unsigned long off_high, unsigned lon asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, u32 lenhi, u32 lenlo) { - return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, - ((loff_t)lenhi << 32) | lenlo); + return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, + ((loff_t)lenhi << 32) | lenlo); } diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index 990703b7..d980da4 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -104,8 +104,8 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, { /* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE we have. */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, - pgoff >> (PAGE_SHIFT - 12)); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + pgoff >> (PAGE_SHIFT - 12)); } asmlinkage long sys_mmap(unsigned long addr, unsigned long len, @@ -113,7 +113,7 @@ asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long off) { /* no alignment check? */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); } long sparc_remap_file_pages(unsigned long start, unsigned long size, diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 55416db..ebb84dc 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -458,7 +458,7 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, goto out; if (off & ~PAGE_MASK) goto out; - retval = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + retval = ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); out: return retval; } diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c index 6258676..35f7047 100644 --- a/arch/um/kernel/syscall.c +++ b/arch/um/kernel/syscall.c @@ -22,7 +22,7 @@ long old_mmap(unsigned long addr, unsigned long len, if (offset & ~PAGE_MASK) goto out; - err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT); + err = ksys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT); out: return err; } diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 2a5e99c..c58f75b 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -13,7 +13,7 @@ 4 i386 write sys_write 5 i386 open sys_open compat_sys_open 6 i386 close sys_close -7 i386 waitpid sys_waitpid compat_sys_x86_waitpid +7 i386 waitpid sys_waitpid 8 i386 creat sys_creat 9 i386 link sys_link 10 i386 unlink sys_unlink @@ -137,7 +137,7 @@ 128 i386 init_module sys_init_module 129 i386 delete_module sys_delete_module 130 i386 get_kernel_syms -131 i386 quotactl sys_quotactl sys32_quotactl +131 i386 quotactl sys_quotactl compat_sys_quotactl32 132 i386 getpgid sys_getpgid 133 i386 fchdir sys_fchdir 134 i386 bdflush sys_bdflush diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index 41c6718..86b1341 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -33,7 +33,6 @@ #include <asm/vdso.h> #include <asm/sigframe.h> #include <asm/sighandling.h> -#include <asm/sys_ia32.h> #include <asm/smap.h> /* diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c index 6512498..11ef7b7 100644 --- a/arch/x86/ia32/sys_ia32.c +++ b/arch/x86/ia32/sys_ia32.c @@ -41,12 +41,13 @@ #include <linux/highuid.h> #include <linux/sysctl.h> #include <linux/slab.h> +#include <linux/sched/task.h> #include <asm/mman.h> #include <asm/types.h> #include <linux/uaccess.h> #include <linux/atomic.h> #include <asm/vgtod.h> -#include <asm/sys_ia32.h> +#include <asm/ia32.h> #define AA(__x) ((unsigned long)(__x)) @@ -54,13 +55,14 @@ COMPAT_SYSCALL_DEFINE3(x86_truncate64, const char __user *, filename, unsigned long, offset_low, unsigned long, offset_high) { - return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low); + return ksys_truncate(filename, + ((loff_t) offset_high << 32) | offset_low); } COMPAT_SYSCALL_DEFINE3(x86_ftruncate64, unsigned int, fd, unsigned long, offset_low, unsigned long, offset_high) { - return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low); + return ksys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low); } /* @@ -164,29 +166,23 @@ COMPAT_SYSCALL_DEFINE1(x86_mmap, struct mmap_arg_struct32 __user *, arg) if (a.offset & ~PAGE_MASK) return -EINVAL; - return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, + return ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset>>PAGE_SHIFT); } -COMPAT_SYSCALL_DEFINE3(x86_waitpid, compat_pid_t, pid, unsigned int __user *, - stat_addr, int, options) -{ - return compat_sys_wait4(pid, stat_addr, options, NULL); -} - /* warning: next two assume little endian */ COMPAT_SYSCALL_DEFINE5(x86_pread, unsigned int, fd, char __user *, ubuf, u32, count, u32, poslo, u32, poshi) { - return sys_pread64(fd, ubuf, count, - ((loff_t)AA(poshi) << 32) | AA(poslo)); + return ksys_pread64(fd, ubuf, count, + ((loff_t)AA(poshi) << 32) | AA(poslo)); } COMPAT_SYSCALL_DEFINE5(x86_pwrite, unsigned int, fd, const char __user *, ubuf, u32, count, u32, poslo, u32, poshi) { - return sys_pwrite64(fd, ubuf, count, - ((loff_t)AA(poshi) << 32) | AA(poslo)); + return ksys_pwrite64(fd, ubuf, count, + ((loff_t)AA(poshi) << 32) | AA(poslo)); } @@ -198,40 +194,40 @@ COMPAT_SYSCALL_DEFINE6(x86_fadvise64_64, int, fd, __u32, offset_low, __u32, offset_high, __u32, len_low, __u32, len_high, int, advice) { - return sys_fadvise64_64(fd, - (((u64)offset_high)<<32) | offset_low, - (((u64)len_high)<<32) | len_low, - advice); + return ksys_fadvise64_64(fd, + (((u64)offset_high)<<32) | offset_low, + (((u64)len_high)<<32) | len_low, + advice); } COMPAT_SYSCALL_DEFINE4(x86_readahead, int, fd, unsigned int, off_lo, unsigned int, off_hi, size_t, count) { - return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); + return ksys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); } COMPAT_SYSCALL_DEFINE6(x86_sync_file_range, int, fd, unsigned int, off_low, unsigned int, off_hi, unsigned int, n_low, unsigned int, n_hi, int, flags) { - return sys_sync_file_range(fd, - ((u64)off_hi << 32) | off_low, - ((u64)n_hi << 32) | n_low, flags); + return ksys_sync_file_range(fd, + ((u64)off_hi << 32) | off_low, + ((u64)n_hi << 32) | n_low, flags); } COMPAT_SYSCALL_DEFINE5(x86_fadvise64, int, fd, unsigned int, offset_lo, unsigned int, offset_hi, size_t, len, int, advice) { - return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, - len, advice); + return ksys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, + len, advice); } COMPAT_SYSCALL_DEFINE6(x86_fallocate, int, fd, int, mode, unsigned int, offset_lo, unsigned int, offset_hi, unsigned int, len_lo, unsigned int, len_hi) { - return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, - ((u64)len_hi << 32) | len_lo); + return ksys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, + ((u64)len_hi << 32) | len_lo); } /* @@ -241,6 +237,6 @@ COMPAT_SYSCALL_DEFINE5(x86_clone, unsigned long, clone_flags, unsigned long, newsp, int __user *, parent_tidptr, unsigned long, tls_val, int __user *, child_tidptr) { - return sys_clone(clone_flags, newsp, parent_tidptr, child_tidptr, + return _do_fork(clone_flags, newsp, 0, parent_tidptr, child_tidptr, tls_val); } diff --git a/arch/x86/include/asm/sys_ia32.h b/arch/x86/include/asm/sys_ia32.h deleted file mode 100644 index 906794a..0000000 --- a/arch/x86/include/asm/sys_ia32.h +++ /dev/null @@ -1,67 +0,0 @@ -/* - * sys_ia32.h - Linux ia32 syscall interfaces - * - * Copyright (c) 2008 Jaswinder Singh Rajput - * - * This file is released under the GPLv2. - * See the file COPYING for more details. - */ - -#ifndef _ASM_X86_SYS_IA32_H -#define _ASM_X86_SYS_IA32_H - -#ifdef CONFIG_COMPAT - -#include <linux/compiler.h> -#include <linux/linkage.h> -#include <linux/types.h> -#include <linux/signal.h> -#include <asm/compat.h> -#include <asm/ia32.h> - -/* ia32/sys_ia32.c */ -asmlinkage long compat_sys_x86_truncate64(const char __user *, unsigned long, - unsigned long); -asmlinkage long compat_sys_x86_ftruncate64(unsigned int, unsigned long, - unsigned long); - -asmlinkage long compat_sys_x86_stat64(const char __user *, - struct stat64 __user *); -asmlinkage long compat_sys_x86_lstat64(const char __user *, - struct stat64 __user *); -asmlinkage long compat_sys_x86_fstat64(unsigned int, struct stat64 __user *); -asmlinkage long compat_sys_x86_fstatat(unsigned int, const char __user *, - struct stat64 __user *, int); -struct mmap_arg_struct32; -asmlinkage long compat_sys_x86_mmap(struct mmap_arg_struct32 __user *); - -asmlinkage long compat_sys_x86_waitpid(compat_pid_t, unsigned int __user *, - int); - -asmlinkage long compat_sys_x86_pread(unsigned int, char __user *, u32, u32, - u32); -asmlinkage long compat_sys_x86_pwrite(unsigned int, const char __user *, u32, - u32, u32); - -asmlinkage long compat_sys_x86_fadvise64_64(int, __u32, __u32, __u32, __u32, - int); - -asmlinkage ssize_t compat_sys_x86_readahead(int, unsigned int, unsigned int, - size_t); -asmlinkage long compat_sys_x86_sync_file_range(int, unsigned int, unsigned int, - unsigned int, unsigned int, - int); -asmlinkage long compat_sys_x86_fadvise64(int, unsigned int, unsigned int, - size_t, int); -asmlinkage long compat_sys_x86_fallocate(int, int, unsigned int, unsigned int, - unsigned int, unsigned int); -asmlinkage long compat_sys_x86_clone(unsigned long, unsigned long, int __user *, - unsigned long, int __user *); - -/* ia32/ia32_signal.c */ -asmlinkage long sys32_sigreturn(void); -asmlinkage long sys32_rt_sigreturn(void); - -#endif /* CONFIG_COMPAT */ - -#endif /* _ASM_X86_SYS_IA32_H */ diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h index bad25bb..ae6e05f 100644 --- a/arch/x86/include/asm/syscalls.h +++ b/arch/x86/include/asm/syscalls.h @@ -17,6 +17,7 @@ /* Common in X86_32 and X86_64 */ /* kernel/ioport.c */ +long ksys_ioperm(unsigned long from, unsigned long num, int turn_on); asmlinkage long sys_ioperm(unsigned long, unsigned long, int); asmlinkage long sys_iopl(unsigned int); @@ -34,7 +35,7 @@ asmlinkage long sys_get_thread_area(struct user_desc __user *); #ifdef CONFIG_X86_32 /* kernel/signal.c */ -asmlinkage unsigned long sys_sigreturn(void); +asmlinkage long sys_sigreturn(void); /* kernel/vm86_32.c */ struct vm86_struct; diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c index 38deafe..0fe1c87 100644 --- a/arch/x86/kernel/ioport.c +++ b/arch/x86/kernel/ioport.c @@ -23,7 +23,7 @@ /* * this changes the io permissions bitmap in the current task. */ -SYSCALL_DEFINE3(ioperm, unsigned long, from, unsigned long, num, int, turn_on) +long ksys_ioperm(unsigned long from, unsigned long num, int turn_on) { struct thread_struct *t = ¤t->thread; struct tss_struct *tss; @@ -96,6 +96,11 @@ SYSCALL_DEFINE3(ioperm, unsigned long, from, unsigned long, num, int, turn_on) return 0; } +SYSCALL_DEFINE3(ioperm, unsigned long, from, unsigned long, num, int, turn_on) +{ + return ksys_ioperm(from, num, turn_on); +} + /* * sys_iopl has to be used when you want to access the IO ports * beyond the 0x3ff range: to get the full 65536 ports bitmapped diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index 4cdc0b2..da270b9 100644 --- a/arch/x86/kernel/signal.c +++ b/arch/x86/kernel/signal.c @@ -25,6 +25,7 @@ #include <linux/user-return-notifier.h> #include <linux/uprobes.h> #include <linux/context_tracking.h> +#include <linux/syscalls.h> #include <asm/processor.h> #include <asm/ucontext.h> @@ -601,7 +602,7 @@ static int x32_setup_rt_frame(struct ksignal *ksig, * Do a signal return; undo the signal stack. */ #ifdef CONFIG_X86_32 -asmlinkage unsigned long sys_sigreturn(void) +SYSCALL_DEFINE0(sigreturn) { struct pt_regs *regs = current_pt_regs(); struct sigframe __user *frame; @@ -633,7 +634,7 @@ badframe: } #endif /* CONFIG_X86_32 */ -asmlinkage long sys_rt_sigreturn(void) +SYSCALL_DEFINE0(rt_sigreturn) { struct pt_regs *regs = current_pt_regs(); struct rt_sigframe __user *frame; diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c index 676774b..a3f15ed 100644 --- a/arch/x86/kernel/sys_x86_64.c +++ b/arch/x86/kernel/sys_x86_64.c @@ -97,7 +97,7 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, if (off & ~PAGE_MASK) goto out; - error = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + error = ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); out: return error; } diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c index 74afbf0..8201748 100644 --- a/arch/xtensa/kernel/syscall.c +++ b/arch/xtensa/kernel/syscall.c @@ -55,7 +55,7 @@ asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg) asmlinkage long xtensa_fadvise64_64(int fd, int advice, unsigned long long offset, unsigned long long len) { - return sys_fadvise64_64(fd, offset, len, advice); + return ksys_fadvise64_64(fd, offset, len, advice); } #ifdef CONFIG_MMU diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c index 50025d7..f776807 100644 --- a/drivers/base/devtmpfs.c +++ b/drivers/base/devtmpfs.c @@ -356,7 +356,8 @@ int devtmpfs_mount(const char *mntdir) if (!thread) return 0; - err = sys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, NULL); + err = ksys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, + NULL); if (err) printk(KERN_INFO "devtmpfs: error mounting %i\n", err); else @@ -379,14 +380,14 @@ static int devtmpfsd(void *p) { char options[] = "mode=0755"; int *err = p; - *err = sys_unshare(CLONE_NEWNS); + *err = ksys_unshare(CLONE_NEWNS); if (*err) goto out; - *err = sys_mount("devtmpfs", "/", "devtmpfs", MS_SILENT, options); + *err = ksys_mount("devtmpfs", "/", "devtmpfs", MS_SILENT, options); if (*err) goto out; - sys_chdir("/.."); /* will traverse into overmounted root */ - sys_chroot("."); + ksys_chdir("/.."); /* will traverse into overmounted root */ + ksys_chroot("."); complete(&setup_done); while (1) { spin_lock(&req_lock); diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index b674793..6364890 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -660,7 +660,7 @@ static void sysrq_do_reset(struct timer_list *t) state->reset_requested = true; - sys_sync(); + ksys_sync(); kernel_restart(NULL); } diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c index d61be30..a78ad10 100644 --- a/drivers/tty/vt/vt_ioctl.c +++ b/drivers/tty/vt/vt_ioctl.c @@ -57,7 +57,7 @@ extern struct tty_driver *console_driver; */ #ifdef CONFIG_X86 -#include <linux/syscalls.h> +#include <asm/syscalls.h> #endif static void complete_change_console(struct vc_data *vc); @@ -420,12 +420,12 @@ int vt_ioctl(struct tty_struct *tty, ret = -EINVAL; break; } - ret = sys_ioperm(arg, 1, (cmd == KDADDIO)) ? -ENXIO : 0; + ret = ksys_ioperm(arg, 1, (cmd == KDADDIO)) ? -ENXIO : 0; break; case KDENABIO: case KDDISABIO: - ret = sys_ioperm(GPFIRST, GPNUM, + ret = ksys_ioperm(GPFIRST, GPNUM, (cmd == KDENABIO)) ? -ENXIO : 0; break; #endif diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index b7c816f..26f6b4f 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -310,7 +310,7 @@ static int autofs_dev_ioctl_closemount(struct file *fp, struct autofs_sb_info *sbi, struct autofs_dev_ioctl *param) { - return sys_close(param->ioctlfd); + return ksys_close(param->ioctlfd); } /* diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index a7c5a98..a41b48f 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -241,7 +241,7 @@ ret: return retval; error: if (fd_binary > 0) - sys_close(fd_binary); + ksys_close(fd_binary); bprm->interp_flags = 0; bprm->interp_data = 0; goto ret; diff --git a/fs/dcookies.c b/fs/dcookies.c index 0d0461c..57bc964 100644 --- a/fs/dcookies.c +++ b/fs/dcookies.c @@ -146,7 +146,7 @@ out: /* And here is where the userspace process can look up the cookie value * to retrieve the path. */ -SYSCALL_DEFINE3(lookup_dcookie, u64, cookie64, char __user *, buf, size_t, len) +static int do_lookup_dcookie(u64 cookie64, char __user *buf, size_t len) { unsigned long cookie = (unsigned long)cookie64; int err = -EINVAL; @@ -203,13 +203,18 @@ out: return err; } +SYSCALL_DEFINE3(lookup_dcookie, u64, cookie64, char __user *, buf, size_t, len) +{ + return do_lookup_dcookie(cookie64, buf, len); +} + #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, w0, u32, w1, char __user *, buf, compat_size_t, len) { #ifdef __BIG_ENDIAN - return sys_lookup_dcookie(((u64)w0 << 32) | w1, buf, len); + return do_lookup_dcookie(((u64)w0 << 32) | w1, buf, len); #else - return sys_lookup_dcookie(((u64)w1 << 32) | w0, buf, len); + return do_lookup_dcookie(((u64)w1 << 32) | w0, buf, len); #endif } #endif diff --git a/fs/eventfd.c b/fs/eventfd.c index 012f5bd..08d3bd6 100644 --- a/fs/eventfd.c +++ b/fs/eventfd.c @@ -380,7 +380,7 @@ struct eventfd_ctx *eventfd_ctx_fileget(struct file *file) } EXPORT_SYMBOL_GPL(eventfd_ctx_fileget); -SYSCALL_DEFINE2(eventfd2, unsigned int, count, int, flags) +static int do_eventfd(unsigned int count, int flags) { struct eventfd_ctx *ctx; int fd; @@ -409,8 +409,13 @@ SYSCALL_DEFINE2(eventfd2, unsigned int, count, int, flags) return fd; } +SYSCALL_DEFINE2(eventfd2, unsigned int, count, int, flags) +{ + return do_eventfd(count, flags); +} + SYSCALL_DEFINE1(eventfd, unsigned int, count) { - return sys_eventfd2(count, 0); + return do_eventfd(count, 0); } diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 0f3494e..602ca42 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1936,7 +1936,7 @@ static void clear_tfile_check_list(void) /* * Open an eventpoll file descriptor. */ -SYSCALL_DEFINE1(epoll_create1, int, flags) +static int do_epoll_create(int flags) { int error, fd; struct eventpoll *ep = NULL; @@ -1979,12 +1979,17 @@ out_free_ep: return error; } +SYSCALL_DEFINE1(epoll_create1, int, flags) +{ + return do_epoll_create(flags); +} + SYSCALL_DEFINE1(epoll_create, int, size) { if (size <= 0) return -EINVAL; - return sys_epoll_create1(0); + return do_epoll_create(0); } /* @@ -2148,8 +2153,8 @@ error_return: * Implement the event wait interface for the eventpoll file. It is the kernel * part of the user space epoll_wait(2). */ -SYSCALL_DEFINE4(epoll_wait, int, epfd, struct epoll_event __user *, events, - int, maxevents, int, timeout) +static int do_epoll_wait(int epfd, struct epoll_event __user *events, + int maxevents, int timeout) { int error; struct fd f; @@ -2190,6 +2195,12 @@ error_fput: return error; } +SYSCALL_DEFINE4(epoll_wait, int, epfd, struct epoll_event __user *, events, + int, maxevents, int, timeout) +{ + return do_epoll_wait(epfd, events, maxevents, timeout); +} + /* * Implement the event wait interface for the eventpoll file. It is the kernel * part of the user space epoll_pwait(2). @@ -2214,7 +2225,7 @@ SYSCALL_DEFINE6(epoll_pwait, int, epfd, struct epoll_event __user *, events, set_current_blocked(&ksigmask); } - error = sys_epoll_wait(epfd, events, maxevents, timeout); + error = do_epoll_wait(epfd, events, maxevents, timeout); /* * If we changed the signal mask, we need to restore the original one. @@ -2257,7 +2268,7 @@ COMPAT_SYSCALL_DEFINE6(epoll_pwait, int, epfd, set_current_blocked(&ksigmask); } - err = sys_epoll_wait(epfd, events, maxevents, timeout); + err = do_epoll_wait(epfd, events, maxevents, timeout); /* * If we changed the signal mask, we need to restore the original one. @@ -607,8 +607,8 @@ static int fixup_compat_flock(struct flock *flock) return 0; } -COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, - compat_ulong_t, arg) +static long do_compat_fcntl64(unsigned int fd, unsigned int cmd, + compat_ulong_t arg) { struct fd f = fdget_raw(fd); struct flock flock; @@ -672,6 +672,12 @@ out_put: return err; } +COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, + compat_ulong_t, arg) +{ + return do_compat_fcntl64(fd, cmd, arg); +} + COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, compat_ulong_t, arg) { @@ -684,7 +690,7 @@ COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, case F_OFD_SETLKW: return -EINVAL; } - return compat_sys_fcntl64(fd, cmd, arg); + return do_compat_fcntl64(fd, cmd, arg); } #endif @@ -638,6 +638,7 @@ out_unlock: spin_unlock(&files->file_lock); return -EBADF; } +EXPORT_SYMBOL(__close_fd); /* for ksys_close() */ void do_close_on_exec(struct files_struct *files) { @@ -870,7 +871,7 @@ out_unlock: return err; } -SYSCALL_DEFINE3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags) +static int ksys_dup3(unsigned int oldfd, unsigned int newfd, int flags) { int err = -EBADF; struct file *file; @@ -904,6 +905,11 @@ out_unlock: return err; } +SYSCALL_DEFINE3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags) +{ + return ksys_dup3(oldfd, newfd, flags); +} + SYSCALL_DEFINE2(dup2, unsigned int, oldfd, unsigned int, newfd) { if (unlikely(newfd == oldfd)) { /* corner case */ @@ -916,10 +922,10 @@ SYSCALL_DEFINE2(dup2, unsigned int, oldfd, unsigned int, newfd) rcu_read_unlock(); return retval; } - return sys_dup3(oldfd, newfd, 0); + return ksys_dup3(oldfd, newfd, 0); } -SYSCALL_DEFINE1(dup, unsigned int, fildes) +int ksys_dup(unsigned int fildes) { int ret = -EBADF; struct file *file = fget_raw(fildes); @@ -934,6 +940,11 @@ SYSCALL_DEFINE1(dup, unsigned int, fildes) return ret; } +SYSCALL_DEFINE1(dup, unsigned int, fildes) +{ + return ksys_dup(fildes); +} + int f_dupfd(unsigned int from, struct file *file, unsigned flags) { int err; diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h index ffaec2e..cb8374a 100644 --- a/fs/hostfs/hostfs.h +++ b/fs/hostfs/hostfs.h @@ -84,7 +84,7 @@ extern int set_attr(const char *file, struct hostfs_iattr *attrs, int fd); extern int make_symlink(const char *from, const char *to); extern int unlink_file(const char *file); extern int do_mkdir(const char *file, int mode); -extern int do_rmdir(const char *file); +extern int hostfs_do_rmdir(const char *file); extern int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor); extern int link_file(const char *from, const char *to); diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index c148e7f..3cd85eb 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -706,7 +706,7 @@ static int hostfs_rmdir(struct inode *ino, struct dentry *dentry) if ((file = dentry_name(dentry)) == NULL) return -ENOMEM; - err = do_rmdir(file); + err = hostfs_do_rmdir(file); __putname(file); return err; } diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c index 9c1e0f0..5ecc470 100644 --- a/fs/hostfs/hostfs_user.c +++ b/fs/hostfs/hostfs_user.c @@ -304,7 +304,7 @@ int do_mkdir(const char *file, int mode) return 0; } -int do_rmdir(const char *file) +int hostfs_do_rmdir(const char *file) { int err; diff --git a/fs/internal.h b/fs/internal.h index df262f4..980d005 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -55,7 +55,15 @@ extern void __init chrdev_init(void); extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *); extern int vfs_path_lookup(struct dentry *, struct vfsmount *, const char *, unsigned int, struct path *); +long do_mknodat(int dfd, const char __user *filename, umode_t mode, + unsigned int dev); +long do_mkdirat(int dfd, const char __user *pathname, umode_t mode); +long do_rmdir(int dfd, const char __user *pathname); long do_unlinkat(int dfd, struct filename *name); +long do_symlinkat(const char __user *oldname, int newdfd, + const char __user *newname); +int do_linkat(int olddfd, const char __user *oldname, int newdfd, + const char __user *newname, int flags); /* * namespace.c @@ -111,6 +119,12 @@ extern struct file *do_filp_open(int dfd, struct filename *pathname, extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, const char *, const struct open_flags *); +long do_sys_ftruncate(unsigned int fd, loff_t length, int small); +long do_faccessat(int dfd, const char __user *filename, int mode); +int do_fchmodat(int dfd, const char __user *filename, umode_t mode); +int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group, + int flag); + extern int open_check_o_direct(struct file *f); extern int vfs_open(const struct path *, struct file *, const struct cred *); extern struct file *filp_clone_open(struct file *); @@ -689,7 +689,7 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd, return error; } -SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd, unsigned long, arg) +int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg) { int error; struct fd f = fdget(fd); @@ -702,3 +702,8 @@ SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd, unsigned long, arg) fdput(f); return error; } + +SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd, unsigned long, arg) +{ + return ksys_ioctl(fd, cmd, arg); +} @@ -3729,8 +3729,8 @@ static int may_mknod(umode_t mode) } } -SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, - unsigned, dev) +long do_mknodat(int dfd, const char __user *filename, umode_t mode, + unsigned int dev) { struct dentry *dentry; struct path path; @@ -3773,9 +3773,15 @@ out: return error; } +SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, + unsigned int, dev) +{ + return do_mknodat(dfd, filename, mode, dev); +} + SYSCALL_DEFINE3(mknod, const char __user *, filename, umode_t, mode, unsigned, dev) { - return sys_mknodat(AT_FDCWD, filename, mode, dev); + return do_mknodat(AT_FDCWD, filename, mode, dev); } int vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) @@ -3804,7 +3810,7 @@ int vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) } EXPORT_SYMBOL(vfs_mkdir); -SYSCALL_DEFINE3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode) +long do_mkdirat(int dfd, const char __user *pathname, umode_t mode) { struct dentry *dentry; struct path path; @@ -3829,9 +3835,14 @@ retry: return error; } +SYSCALL_DEFINE3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode) +{ + return do_mkdirat(dfd, pathname, mode); +} + SYSCALL_DEFINE2(mkdir, const char __user *, pathname, umode_t, mode) { - return sys_mkdirat(AT_FDCWD, pathname, mode); + return do_mkdirat(AT_FDCWD, pathname, mode); } int vfs_rmdir(struct inode *dir, struct dentry *dentry) @@ -3873,7 +3884,7 @@ out: } EXPORT_SYMBOL(vfs_rmdir); -static long do_rmdir(int dfd, const char __user *pathname) +long do_rmdir(int dfd, const char __user *pathname) { int error = 0; struct filename *name; @@ -4109,8 +4120,8 @@ int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname) } EXPORT_SYMBOL(vfs_symlink); -SYSCALL_DEFINE3(symlinkat, const char __user *, oldname, - int, newdfd, const char __user *, newname) +long do_symlinkat(const char __user *oldname, int newdfd, + const char __user *newname) { int error; struct filename *from; @@ -4140,9 +4151,15 @@ out_putname: return error; } +SYSCALL_DEFINE3(symlinkat, const char __user *, oldname, + int, newdfd, const char __user *, newname) +{ + return do_symlinkat(oldname, newdfd, newname); +} + SYSCALL_DEFINE2(symlink, const char __user *, oldname, const char __user *, newname) { - return sys_symlinkat(oldname, AT_FDCWD, newname); + return do_symlinkat(oldname, AT_FDCWD, newname); } /** @@ -4234,8 +4251,8 @@ EXPORT_SYMBOL(vfs_link); * with linux 2.0, and to avoid hard-linking to directories * and other special files. --ADM */ -SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname, - int, newdfd, const char __user *, newname, int, flags) +int do_linkat(int olddfd, const char __user *oldname, int newdfd, + const char __user *newname, int flags) { struct dentry *new_dentry; struct path old_path, new_path; @@ -4299,9 +4316,15 @@ out: return error; } +SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname, + int, newdfd, const char __user *, newname, int, flags) +{ + return do_linkat(olddfd, oldname, newdfd, newname, flags); +} + SYSCALL_DEFINE2(link, const char __user *, oldname, const char __user *, newname) { - return sys_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); + return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); } /** @@ -4479,8 +4502,8 @@ out: } EXPORT_SYMBOL(vfs_rename); -SYSCALL_DEFINE5(renameat2, int, olddfd, const char __user *, oldname, - int, newdfd, const char __user *, newname, unsigned int, flags) +static int do_renameat2(int olddfd, const char __user *oldname, int newdfd, + const char __user *newname, unsigned int flags) { struct dentry *old_dentry, *new_dentry; struct dentry *trap; @@ -4622,15 +4645,21 @@ exit: return error; } +SYSCALL_DEFINE5(renameat2, int, olddfd, const char __user *, oldname, + int, newdfd, const char __user *, newname, unsigned int, flags) +{ + return do_renameat2(olddfd, oldname, newdfd, newname, flags); +} + SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname) { - return sys_renameat2(olddfd, oldname, newdfd, newname, 0); + return do_renameat2(olddfd, oldname, newdfd, newname, 0); } SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newname) { - return sys_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0); + return do_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0); } int vfs_whiteout(struct inode *dir, struct dentry *dentry) diff --git a/fs/namespace.c b/fs/namespace.c index 9d1374a..e398f32 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1680,7 +1680,7 @@ static inline bool may_mandlock(void) * unixes. Our API is identical to OSF/1 to avoid making a mess of AMD */ -SYSCALL_DEFINE2(umount, char __user *, name, int, flags) +int ksys_umount(char __user *name, int flags) { struct path path; struct mount *mnt; @@ -1720,6 +1720,11 @@ out: return retval; } +SYSCALL_DEFINE2(umount, char __user *, name, int, flags) +{ + return ksys_umount(name, flags); +} + #ifdef __ARCH_WANT_SYS_OLDUMOUNT /* @@ -1727,7 +1732,7 @@ out: */ SYSCALL_DEFINE1(oldumount, char __user *, name) { - return sys_umount(name, 0); + return ksys_umount(name, 0); } #endif @@ -3032,8 +3037,8 @@ struct dentry *mount_subtree(struct vfsmount *mnt, const char *name) } EXPORT_SYMBOL(mount_subtree); -SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name, - char __user *, type, unsigned long, flags, void __user *, data) +int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type, + unsigned long flags, void __user *data) { int ret; char *kernel_type; @@ -3066,6 +3071,12 @@ out_type: return ret; } +SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name, + char __user *, type, unsigned long, flags, void __user *, data) +{ + return ksys_mount(dev_name, dir_name, type, flags, data); +} + /* * Return true if path is reachable from root * diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index c07eb3d..fa803a5 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -820,9 +820,8 @@ out_destroy_group: return fd; } -SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, - __u64, mask, int, dfd, - const char __user *, pathname) +static int do_fanotify_mark(int fanotify_fd, unsigned int flags, __u64 mask, + int dfd, const char __user *pathname) { struct inode *inode = NULL; struct vfsmount *mnt = NULL; @@ -928,13 +927,20 @@ fput_and_out: return ret; } +SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, + __u64, mask, int, dfd, + const char __user *, pathname) +{ + return do_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname); +} + #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE6(fanotify_mark, int, fanotify_fd, unsigned int, flags, __u32, mask0, __u32, mask1, int, dfd, const char __user *, pathname) { - return sys_fanotify_mark(fanotify_fd, flags, + return do_fanotify_mark(fanotify_fd, flags, #ifdef __BIG_ENDIAN ((__u64)mask0 << 32) | mask1, #else diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 2c908b3..43c2365 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -635,7 +635,7 @@ static struct fsnotify_group *inotify_new_group(unsigned int max_events) /* inotify syscalls */ -SYSCALL_DEFINE1(inotify_init1, int, flags) +static int do_inotify_init(int flags) { struct fsnotify_group *group; int ret; @@ -660,9 +660,14 @@ SYSCALL_DEFINE1(inotify_init1, int, flags) return ret; } +SYSCALL_DEFINE1(inotify_init1, int, flags) +{ + return do_inotify_init(flags); +} + SYSCALL_DEFINE0(inotify_init) { - return sys_inotify_init1(0); + return do_inotify_init(0); } SYSCALL_DEFINE3(inotify_add_watch, int, fd, const char __user *, pathname, @@ -128,7 +128,7 @@ out: } EXPORT_SYMBOL_GPL(vfs_truncate); -static long do_sys_truncate(const char __user *pathname, loff_t length) +long do_sys_truncate(const char __user *pathname, loff_t length) { unsigned int lookup_flags = LOOKUP_FOLLOW; struct path path; @@ -162,7 +162,7 @@ COMPAT_SYSCALL_DEFINE2(truncate, const char __user *, path, compat_off_t, length } #endif -static long do_sys_ftruncate(unsigned int fd, loff_t length, int small) +long do_sys_ftruncate(unsigned int fd, loff_t length, int small) { struct inode *inode; struct dentry *dentry; @@ -333,7 +333,7 @@ int vfs_fallocate(struct file *file, int mode, loff_t offset, loff_t len) } EXPORT_SYMBOL_GPL(vfs_fallocate); -SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len) +int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len) { struct fd f = fdget(fd); int error = -EBADF; @@ -345,12 +345,17 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len) return error; } +SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len) +{ + return ksys_fallocate(fd, mode, offset, len); +} + /* * access() needs to use the real uid/gid, not the effective uid/gid. * We do this by temporarily clearing all FS-related capabilities and * switching the fsuid/fsgid around to the real ones. */ -SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode) +long do_faccessat(int dfd, const char __user *filename, int mode) { const struct cred *old_cred; struct cred *override_cred; @@ -426,12 +431,17 @@ out: return res; } +SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode) +{ + return do_faccessat(dfd, filename, mode); +} + SYSCALL_DEFINE2(access, const char __user *, filename, int, mode) { - return sys_faccessat(AT_FDCWD, filename, mode); + return do_faccessat(AT_FDCWD, filename, mode); } -SYSCALL_DEFINE1(chdir, const char __user *, filename) +int ksys_chdir(const char __user *filename) { struct path path; int error; @@ -457,6 +467,11 @@ out: return error; } +SYSCALL_DEFINE1(chdir, const char __user *, filename) +{ + return ksys_chdir(filename); +} + SYSCALL_DEFINE1(fchdir, unsigned int, fd) { struct fd f = fdget_raw(fd); @@ -479,7 +494,7 @@ out: return error; } -SYSCALL_DEFINE1(chroot, const char __user *, filename) +int ksys_chroot(const char __user *filename) { struct path path; int error; @@ -512,6 +527,11 @@ out: return error; } +SYSCALL_DEFINE1(chroot, const char __user *, filename) +{ + return ksys_chroot(filename); +} + static int chmod_common(const struct path *path, umode_t mode) { struct inode *inode = path->dentry->d_inode; @@ -541,7 +561,7 @@ out_unlock: return error; } -SYSCALL_DEFINE2(fchmod, unsigned int, fd, umode_t, mode) +int ksys_fchmod(unsigned int fd, umode_t mode) { struct fd f = fdget(fd); int err = -EBADF; @@ -554,7 +574,12 @@ SYSCALL_DEFINE2(fchmod, unsigned int, fd, umode_t, mode) return err; } -SYSCALL_DEFINE3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode) +SYSCALL_DEFINE2(fchmod, unsigned int, fd, umode_t, mode) +{ + return ksys_fchmod(fd, mode); +} + +int do_fchmodat(int dfd, const char __user *filename, umode_t mode) { struct path path; int error; @@ -572,9 +597,15 @@ retry: return error; } +SYSCALL_DEFINE3(fchmodat, int, dfd, const char __user *, filename, + umode_t, mode) +{ + return do_fchmodat(dfd, filename, mode); +} + SYSCALL_DEFINE2(chmod, const char __user *, filename, umode_t, mode) { - return sys_fchmodat(AT_FDCWD, filename, mode); + return do_fchmodat(AT_FDCWD, filename, mode); } static int chown_common(const struct path *path, uid_t user, gid_t group) @@ -619,8 +650,8 @@ retry_deleg: return error; } -SYSCALL_DEFINE5(fchownat, int, dfd, const char __user *, filename, uid_t, user, - gid_t, group, int, flag) +int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group, + int flag) { struct path path; int error = -EINVAL; @@ -651,18 +682,24 @@ out: return error; } +SYSCALL_DEFINE5(fchownat, int, dfd, const char __user *, filename, uid_t, user, + gid_t, group, int, flag) +{ + return do_fchownat(dfd, filename, user, group, flag); +} + SYSCALL_DEFINE3(chown, const char __user *, filename, uid_t, user, gid_t, group) { - return sys_fchownat(AT_FDCWD, filename, user, group, 0); + return do_fchownat(AT_FDCWD, filename, user, group, 0); } SYSCALL_DEFINE3(lchown, const char __user *, filename, uid_t, user, gid_t, group) { - return sys_fchownat(AT_FDCWD, filename, user, group, - AT_SYMLINK_NOFOLLOW); + return do_fchownat(AT_FDCWD, filename, user, group, + AT_SYMLINK_NOFOLLOW); } -SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group) +int ksys_fchown(unsigned int fd, uid_t user, gid_t group) { struct fd f = fdget(fd); int error = -EBADF; @@ -682,6 +719,11 @@ out: return error; } +SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group) +{ + return ksys_fchown(fd, user, group); +} + int open_check_o_direct(struct file *f) { /* NB: we're sure to have correct a_ops only after f_op->open */ @@ -1114,7 +1156,7 @@ COMPAT_SYSCALL_DEFINE4(openat, int, dfd, const char __user *, filename, int, fla */ SYSCALL_DEFINE2(creat, const char __user *, pathname, umode_t, mode) { - return sys_open(pathname, O_CREAT | O_WRONLY | O_TRUNC, mode); + return ksys_open(pathname, O_CREAT | O_WRONLY | O_TRUNC, mode); } #endif @@ -1163,7 +1205,6 @@ SYSCALL_DEFINE1(close, unsigned int, fd) return retval; } -EXPORT_SYMBOL(sys_close); /* * This routine simulates a hangup on the tty, to arrange that users @@ -841,7 +841,7 @@ int do_pipe_flags(int *fd, int flags) * sys_pipe() is the normal C calling standard for creating * a pipe. It's not the way Unix traditionally does this, though. */ -SYSCALL_DEFINE2(pipe2, int __user *, fildes, int, flags) +static int do_pipe2(int __user *fildes, int flags) { struct file *files[2]; int fd[2]; @@ -863,9 +863,14 @@ SYSCALL_DEFINE2(pipe2, int __user *, fildes, int, flags) return error; } +SYSCALL_DEFINE2(pipe2, int __user *, fildes, int, flags) +{ + return do_pipe2(fildes, flags); +} + SYSCALL_DEFINE1(pipe, int __user *, fildes) { - return sys_pipe2(fildes, 0); + return do_pipe2(fildes, 0); } static int wait_for_partner(struct pipe_inode_info *pipe, unsigned int *cnt) diff --git a/fs/quota/compat.c b/fs/quota/compat.c index 779caed..c3057285 100644 --- a/fs/quota/compat.c +++ b/fs/quota/compat.c @@ -41,8 +41,9 @@ struct compat_fs_quota_stat { __u16 qs_iwarnlimit; }; -asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special, - qid_t id, void __user *addr) +COMPAT_SYSCALL_DEFINE4(quotactl32, unsigned int, cmd, + const char __user *, special, qid_t, id, + void __user *, addr) { unsigned int cmds; struct if_dqblk __user *dqblk; @@ -59,7 +60,7 @@ asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special, case Q_GETQUOTA: dqblk = compat_alloc_user_space(sizeof(struct if_dqblk)); compat_dqblk = addr; - ret = sys_quotactl(cmd, special, id, dqblk); + ret = kernel_quotactl(cmd, special, id, dqblk); if (ret) break; if (copy_in_user(compat_dqblk, dqblk, sizeof(*compat_dqblk)) || @@ -75,12 +76,12 @@ asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special, get_user(data, &compat_dqblk->dqb_valid) || put_user(data, &dqblk->dqb_valid)) break; - ret = sys_quotactl(cmd, special, id, dqblk); + ret = kernel_quotactl(cmd, special, id, dqblk); break; case Q_XGETQSTAT: fsqstat = compat_alloc_user_space(sizeof(struct fs_quota_stat)); compat_fsqstat = addr; - ret = sys_quotactl(cmd, special, id, fsqstat); + ret = kernel_quotactl(cmd, special, id, fsqstat); if (ret) break; ret = -EFAULT; @@ -113,7 +114,7 @@ asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special, ret = 0; break; default: - ret = sys_quotactl(cmd, special, id, addr); + ret = kernel_quotactl(cmd, special, id, addr); } return ret; } diff --git a/fs/quota/quota.c b/fs/quota/quota.c index 43612e2..860bfbe 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -833,8 +833,8 @@ static struct super_block *quotactl_block(const char __user *special, int cmd) * calls. Maybe we need to add the process quotas etc. in the future, * but we probably should use rlimits for that. */ -SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special, - qid_t, id, void __user *, addr) +int kernel_quotactl(unsigned int cmd, const char __user *special, + qid_t id, void __user *addr) { uint cmds, type; struct super_block *sb = NULL; @@ -885,3 +885,9 @@ out: path_put(pathp); return ret; } + +SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special, + qid_t, id, void __user *, addr) +{ + return kernel_quotactl(cmd, special, id, addr); +} diff --git a/fs/read_write.c b/fs/read_write.c index f8547b8..c4eabbf 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -301,7 +301,7 @@ loff_t vfs_llseek(struct file *file, loff_t offset, int whence) } EXPORT_SYMBOL(vfs_llseek); -SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence) +off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence) { off_t retval; struct fd f = fdget_pos(fd); @@ -319,10 +319,15 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence) return retval; } +SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence) +{ + return ksys_lseek(fd, offset, whence); +} + #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE3(lseek, unsigned int, fd, compat_off_t, offset, unsigned int, whence) { - return sys_lseek(fd, offset, whence); + return ksys_lseek(fd, offset, whence); } #endif @@ -563,7 +568,7 @@ static inline void file_pos_write(struct file *file, loff_t pos) file->f_pos = pos; } -SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count) +ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count) { struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; @@ -578,8 +583,12 @@ SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count) return ret; } -SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, - size_t, count) +SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count) +{ + return ksys_read(fd, buf, count); +} + +ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count) { struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; @@ -595,8 +604,14 @@ SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, return ret; } -SYSCALL_DEFINE4(pread64, unsigned int, fd, char __user *, buf, - size_t, count, loff_t, pos) +SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, + size_t, count) +{ + return ksys_write(fd, buf, count); +} + +ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, + loff_t pos) { struct fd f; ssize_t ret = -EBADF; @@ -615,8 +630,14 @@ SYSCALL_DEFINE4(pread64, unsigned int, fd, char __user *, buf, return ret; } -SYSCALL_DEFINE4(pwrite64, unsigned int, fd, const char __user *, buf, - size_t, count, loff_t, pos) +SYSCALL_DEFINE4(pread64, unsigned int, fd, char __user *, buf, + size_t, count, loff_t, pos) +{ + return ksys_pread64(fd, buf, count, pos); +} + +ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, + size_t count, loff_t pos) { struct fd f; ssize_t ret = -EBADF; @@ -635,6 +656,12 @@ SYSCALL_DEFINE4(pwrite64, unsigned int, fd, const char __user *, buf, return ret; } +SYSCALL_DEFINE4(pwrite64, unsigned int, fd, const char __user *, buf, + size_t, count, loff_t, pos) +{ + return ksys_pwrite64(fd, buf, count, pos); +} + static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter, loff_t *ppos, int type, rwf_t flags) { diff --git a/fs/readdir.c b/fs/readdir.c index 1b83b0a..d97f548 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -292,8 +292,8 @@ efault: return -EFAULT; } -SYSCALL_DEFINE3(getdents64, unsigned int, fd, - struct linux_dirent64 __user *, dirent, unsigned int, count) +int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, + unsigned int count) { struct fd f; struct linux_dirent64 __user * lastdirent; @@ -326,6 +326,13 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd, return error; } + +SYSCALL_DEFINE3(getdents64, unsigned int, fd, + struct linux_dirent64 __user *, dirent, unsigned int, count) +{ + return ksys_getdents64(fd, dirent, count); +} + #ifdef CONFIG_COMPAT struct compat_old_linux_dirent { compat_ulong_t d_ino; diff --git a/fs/select.c b/fs/select.c index b6c3625..ba879c5 100644 --- a/fs/select.c +++ b/fs/select.c @@ -675,8 +675,8 @@ out_nofds: return ret; } -SYSCALL_DEFINE5(select, int, n, fd_set __user *, inp, fd_set __user *, outp, - fd_set __user *, exp, struct timeval __user *, tvp) +static int kern_select(int n, fd_set __user *inp, fd_set __user *outp, + fd_set __user *exp, struct timeval __user *tvp) { struct timespec64 end_time, *to = NULL; struct timeval tv; @@ -699,6 +699,12 @@ SYSCALL_DEFINE5(select, int, n, fd_set __user *, inp, fd_set __user *, outp, return ret; } +SYSCALL_DEFINE5(select, int, n, fd_set __user *, inp, fd_set __user *, outp, + fd_set __user *, exp, struct timeval __user *, tvp) +{ + return kern_select(n, inp, outp, exp, tvp); +} + static long do_pselect(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timespec __user *tsp, const sigset_t __user *sigmask, size_t sigsetsize) @@ -784,7 +790,7 @@ SYSCALL_DEFINE1(old_select, struct sel_arg_struct __user *, arg) if (copy_from_user(&a, arg, sizeof(a))) return -EFAULT; - return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp); + return kern_select(a.n, a.inp, a.outp, a.exp, a.tvp); } #endif @@ -1259,9 +1265,9 @@ out_nofds: return ret; } -COMPAT_SYSCALL_DEFINE5(select, int, n, compat_ulong_t __user *, inp, - compat_ulong_t __user *, outp, compat_ulong_t __user *, exp, - struct compat_timeval __user *, tvp) +static int do_compat_select(int n, compat_ulong_t __user *inp, + compat_ulong_t __user *outp, compat_ulong_t __user *exp, + struct compat_timeval __user *tvp) { struct timespec64 end_time, *to = NULL; struct compat_timeval tv; @@ -1284,6 +1290,13 @@ COMPAT_SYSCALL_DEFINE5(select, int, n, compat_ulong_t __user *, inp, return ret; } +COMPAT_SYSCALL_DEFINE5(select, int, n, compat_ulong_t __user *, inp, + compat_ulong_t __user *, outp, compat_ulong_t __user *, exp, + struct compat_timeval __user *, tvp) +{ + return do_compat_select(n, inp, outp, exp, tvp); +} + struct compat_sel_arg_struct { compat_ulong_t n; compat_uptr_t inp; @@ -1298,8 +1311,8 @@ COMPAT_SYSCALL_DEFINE1(old_select, struct compat_sel_arg_struct __user *, arg) if (copy_from_user(&a, arg, sizeof(a))) return -EFAULT; - return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp), - compat_ptr(a.exp), compat_ptr(a.tvp)); + return do_compat_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp), + compat_ptr(a.exp), compat_ptr(a.tvp)); } static long do_compat_pselect(int n, compat_ulong_t __user *inp, diff --git a/fs/signalfd.c b/fs/signalfd.c index 76bf9cc..d2187a8 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -256,8 +256,8 @@ static const struct file_operations signalfd_fops = { .llseek = noop_llseek, }; -SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask, - size_t, sizemask, int, flags) +static int do_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, + int flags) { sigset_t sigmask; struct signalfd_ctx *ctx; @@ -310,17 +310,22 @@ SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask, return ufd; } +SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask, + size_t, sizemask, int, flags) +{ + return do_signalfd4(ufd, user_mask, sizemask, flags); +} + SYSCALL_DEFINE3(signalfd, int, ufd, sigset_t __user *, user_mask, size_t, sizemask) { - return sys_signalfd4(ufd, user_mask, sizemask, 0); + return do_signalfd4(ufd, user_mask, sizemask, 0); } #ifdef CONFIG_COMPAT -COMPAT_SYSCALL_DEFINE4(signalfd4, int, ufd, - const compat_sigset_t __user *,sigmask, - compat_size_t, sigsetsize, - int, flags) +static long do_compat_signalfd4(int ufd, + const compat_sigset_t __user *sigmask, + compat_size_t sigsetsize, int flags) { sigset_t tmp; sigset_t __user *ksigmask; @@ -333,13 +338,21 @@ COMPAT_SYSCALL_DEFINE4(signalfd4, int, ufd, if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t))) return -EFAULT; - return sys_signalfd4(ufd, ksigmask, sizeof(sigset_t), flags); + return do_signalfd4(ufd, ksigmask, sizeof(sigset_t), flags); +} + +COMPAT_SYSCALL_DEFINE4(signalfd4, int, ufd, + const compat_sigset_t __user *, sigmask, + compat_size_t, sigsetsize, + int, flags) +{ + return do_compat_signalfd4(ufd, sigmask, sigsetsize, flags); } COMPAT_SYSCALL_DEFINE3(signalfd, int, ufd, const compat_sigset_t __user *,sigmask, compat_size_t, sigsetsize) { - return compat_sys_signalfd4(ufd, sigmask, sigsetsize, 0); + return do_compat_signalfd4(ufd, sigmask, sigsetsize, 0); } #endif diff --git a/fs/splice.c b/fs/splice.c index 39e2dc0..005d09c 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1331,8 +1331,8 @@ static long vmsplice_to_pipe(struct file *file, const struct iovec __user *uiov, * Currently we punt and implement it as a normal copy, see pipe_to_user(). * */ -SYSCALL_DEFINE4(vmsplice, int, fd, const struct iovec __user *, iov, - unsigned long, nr_segs, unsigned int, flags) +static long do_vmsplice(int fd, const struct iovec __user *iov, + unsigned long nr_segs, unsigned int flags) { struct fd f; long error; @@ -1358,6 +1358,12 @@ SYSCALL_DEFINE4(vmsplice, int, fd, const struct iovec __user *, iov, return error; } +SYSCALL_DEFINE4(vmsplice, int, fd, const struct iovec __user *, iov, + unsigned long, nr_segs, unsigned int, flags) +{ + return do_vmsplice(fd, iov, nr_segs, flags); +} + #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE4(vmsplice, int, fd, const struct compat_iovec __user *, iov32, unsigned int, nr_segs, unsigned int, flags) @@ -1375,7 +1381,7 @@ COMPAT_SYSCALL_DEFINE4(vmsplice, int, fd, const struct compat_iovec __user *, io put_user(v.iov_len, &iov[i].iov_len)) return -EFAULT; } - return sys_vmsplice(fd, iov, nr_segs, flags); + return do_vmsplice(fd, iov, nr_segs, flags); } #endif @@ -379,8 +379,8 @@ SYSCALL_DEFINE2(newfstat, unsigned int, fd, struct stat __user *, statbuf) return error; } -SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname, - char __user *, buf, int, bufsiz) +static int do_readlinkat(int dfd, const char __user *pathname, + char __user *buf, int bufsiz) { struct path path; int error; @@ -415,10 +415,16 @@ retry: return error; } +SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname, + char __user *, buf, int, bufsiz) +{ + return do_readlinkat(dfd, pathname, buf, bufsiz); +} + SYSCALL_DEFINE3(readlink, const char __user *, path, char __user *, buf, int, bufsiz) { - return sys_readlinkat(AT_FDCWD, path, buf, bufsiz); + return do_readlinkat(AT_FDCWD, path, buf, bufsiz); } @@ -105,7 +105,7 @@ static void fdatawait_one_bdev(struct block_device *bdev, void *arg) * just write metadata (such as inodes or bitmaps) to block device page cache * and do not sync it on their own in ->sync_fs(). */ -SYSCALL_DEFINE0(sync) +void ksys_sync(void) { int nowait = 0, wait = 1; @@ -117,6 +117,11 @@ SYSCALL_DEFINE0(sync) iterate_bdevs(fdatawait_one_bdev, NULL); if (unlikely(laptop_mode)) laptop_sync_completion(); +} + +SYSCALL_DEFINE0(sync) +{ + ksys_sync(); return 0; } @@ -280,8 +285,8 @@ SYSCALL_DEFINE1(fdatasync, unsigned int, fd) * already-instantiated disk blocks, there are no guarantees here that the data * will be available after a crash. */ -SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes, - unsigned int, flags) +int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, + unsigned int flags) { int ret; struct fd f; @@ -359,10 +364,16 @@ out: return ret; } +SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes, + unsigned int, flags) +{ + return ksys_sync_file_range(fd, offset, nbytes, flags); +} + /* It would be nice if people remember that not all the world's an i386 when they introduce new system calls */ SYSCALL_DEFINE4(sync_file_range2, int, fd, unsigned int, flags, loff_t, offset, loff_t, nbytes) { - return sys_sync_file_range(fd, offset, nbytes, flags); + return ksys_sync_file_range(fd, offset, nbytes, flags); } diff --git a/fs/utimes.c b/fs/utimes.c index e4b3d7c..69d4b6b 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -184,8 +184,8 @@ SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename, return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags); } -SYSCALL_DEFINE3(futimesat, int, dfd, const char __user *, filename, - struct timeval __user *, utimes) +static long do_futimesat(int dfd, const char __user *filename, + struct timeval __user *utimes) { struct timeval times[2]; struct timespec64 tstimes[2]; @@ -212,10 +212,17 @@ SYSCALL_DEFINE3(futimesat, int, dfd, const char __user *, filename, return do_utimes(dfd, filename, utimes ? tstimes : NULL, 0); } + +SYSCALL_DEFINE3(futimesat, int, dfd, const char __user *, filename, + struct timeval __user *, utimes) +{ + return do_futimesat(dfd, filename, utimes); +} + SYSCALL_DEFINE2(utimes, char __user *, filename, struct timeval __user *, utimes) { - return sys_futimesat(AT_FDCWD, filename, utimes); + return do_futimesat(AT_FDCWD, filename, utimes); } #ifdef CONFIG_COMPAT @@ -253,7 +260,8 @@ COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filena return do_utimes(dfd, filename, t ? tv : NULL, flags); } -COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, struct compat_timeval __user *, t) +static long do_compat_futimesat(unsigned int dfd, const char __user *filename, + struct compat_timeval __user *t) { struct timespec64 tv[2]; @@ -272,8 +280,15 @@ COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filena return do_utimes(dfd, filename, t ? tv : NULL, 0); } +COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, + const char __user *, filename, + struct compat_timeval __user *, t) +{ + return do_compat_futimesat(dfd, filename, t); +} + COMPAT_SYSCALL_DEFINE2(utimes, const char __user *, filename, struct compat_timeval __user *, t) { - return compat_sys_futimesat(AT_FDCWD, filename, t); + return do_compat_futimesat(AT_FDCWD, filename, t); } #endif diff --git a/include/linux/compat.h b/include/linux/compat.h index 16c3027..9847c5a0 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -33,6 +33,8 @@ #endif #define COMPAT_SYSCALL_DEFINE0(name) \ + asmlinkage long compat_sys_##name(void); \ + ALLOW_ERROR_INJECTION(compat_sys_##name, ERRNO); \ asmlinkage long compat_sys_##name(void) #define COMPAT_SYSCALL_DEFINE1(name, ...) \ @@ -49,8 +51,10 @@ COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ + asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\ __attribute__((alias(__stringify(compat_SyS##name)))); \ + ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \ static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\ asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\ @@ -305,10 +309,6 @@ extern int put_compat_rusage(const struct rusage *, struct compat_siginfo; -extern asmlinkage long compat_sys_waitid(int, compat_pid_t, - struct compat_siginfo __user *, int, - struct compat_rusage __user *); - struct compat_dirent { u32 d_ino; compat_off_t d_off; @@ -422,87 +422,6 @@ struct compat_msgbuf; extern void compat_exit_robust_list(struct task_struct *curr); -asmlinkage long -compat_sys_set_robust_list(struct compat_robust_list_head __user *head, - compat_size_t len); -asmlinkage long -compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, - compat_size_t __user *len_ptr); - -asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); -asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); -asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); -asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, - compat_ssize_t msgsz, int msgflg); -asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, - compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); -long compat_sys_msgctl(int first, int second, void __user *uptr); -long compat_sys_shmctl(int first, int second, void __user *uptr); -long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, - unsigned nsems, const struct compat_timespec __user *timeout); -asmlinkage long compat_sys_keyctl(u32 option, - u32 arg2, u32 arg3, u32 arg4, u32 arg5); -asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); - -asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, - const struct compat_iovec __user *vec, compat_ulong_t vlen); -asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, - const struct compat_iovec __user *vec, compat_ulong_t vlen); -asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, - const struct compat_iovec __user *vec, - compat_ulong_t vlen, u32 pos_low, u32 pos_high); -asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, - const struct compat_iovec __user *vec, - compat_ulong_t vlen, u32 pos_low, u32 pos_high); -asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, - const struct compat_iovec __user *vec, - compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); -asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, - const struct compat_iovec __user *vec, - compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); - -#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 -asmlinkage long compat_sys_preadv64(unsigned long fd, - const struct compat_iovec __user *vec, - unsigned long vlen, loff_t pos); -#endif - -#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 -asmlinkage long compat_sys_pwritev64(unsigned long fd, - const struct compat_iovec __user *vec, - unsigned long vlen, loff_t pos); -#endif - -#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 -asmlinkage long compat_sys_readv64v2(unsigned long fd, - const struct compat_iovec __user *vec, - unsigned long vlen, loff_t pos, rwf_t flags); -#endif - -#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 -asmlinkage long compat_sys_pwritev64v2(unsigned long fd, - const struct compat_iovec __user *vec, - unsigned long vlen, loff_t pos, rwf_t flags); -#endif - -asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); - -asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, - const compat_uptr_t __user *envp); -asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, - const compat_uptr_t __user *argv, - const compat_uptr_t __user *envp, int flags); - -asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, - compat_ulong_t __user *outp, compat_ulong_t __user *exp, - struct compat_timeval __user *tvp); - -asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); - -asmlinkage long compat_sys_wait4(compat_pid_t pid, - compat_uint_t __user *stat_addr, int options, - struct compat_rusage __user *ru); - #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) @@ -515,13 +434,6 @@ int copy_siginfo_from_user32(siginfo_t *to, const struct compat_siginfo __user * int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from); int get_compat_sigevent(struct sigevent *event, const struct compat_sigevent __user *u_event); -long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, - struct compat_siginfo __user *uinfo); -#ifdef CONFIG_COMPAT_OLD_SIGACTION -asmlinkage long compat_sys_sigaction(int sig, - const struct compat_old_sigaction __user *act, - struct compat_old_sigaction __user *oact); -#endif static inline int compat_timeval_compare(struct compat_timeval *lhs, struct compat_timeval *rhs) @@ -543,13 +455,6 @@ static inline int compat_timespec_compare(struct compat_timespec *lhs, return lhs->tv_nsec - rhs->tv_nsec; } -asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, - struct timezone __user *tz); -asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, - struct timezone __user *tz); - -asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); - extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat); /* @@ -575,110 +480,132 @@ put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set, #endif } -asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, - compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, - const compat_ulong_t __user *new_nodes); - extern int compat_ptrace_request(struct task_struct *child, compat_long_t request, compat_ulong_t addr, compat_ulong_t data); extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, compat_ulong_t addr, compat_ulong_t data); -asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, - compat_long_t addr, compat_long_t data); -asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); +struct epoll_event; /* fortunately, this one is fixed-layout */ + +extern ssize_t compat_rw_copy_check_uvector(int type, + const struct compat_iovec __user *uvector, + unsigned long nr_segs, + unsigned long fast_segs, struct iovec *fast_pointer, + struct iovec **ret_pointer); + +extern void __user *compat_alloc_user_space(unsigned long len); + +int compat_restore_altstack(const compat_stack_t __user *uss); +int __compat_save_altstack(compat_stack_t __user *, unsigned long); +#define compat_save_altstack_ex(uss, sp) do { \ + compat_stack_t __user *__uss = uss; \ + struct task_struct *t = current; \ + put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ + put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ + put_user_ex(t->sas_ss_size, &__uss->ss_size); \ + if (t->sas_ss_flags & SS_AUTODISARM) \ + sas_ss_reset(t); \ +} while (0); + /* - * epoll (fs/eventpoll.c) compat bits follow ... + * These syscall function prototypes are kept in the same order as + * include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls + * go below. + * + * Please note that these prototypes here are only provided for information + * purposes, for static analysis, and for linking from the syscall table. + * These functions should not be called elsewhere from kernel code. */ -struct epoll_event; /* fortunately, this one is fixed-layout */ +asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); +asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, + u32 __user *iocb); +asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, + compat_long_t min_nr, + compat_long_t nr, + struct io_event __user *events, + struct compat_timespec __user *timeout); + +/* fs/cookies.c */ +asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); + +/* fs/eventpoll.c */ asmlinkage long compat_sys_epoll_pwait(int epfd, struct epoll_event __user *events, int maxevents, int timeout, const compat_sigset_t __user *sigmask, compat_size_t sigsetsize); -asmlinkage long compat_sys_utime(const char __user *filename, - struct compat_utimbuf __user *t); -asmlinkage long compat_sys_utimensat(unsigned int dfd, - const char __user *filename, - struct compat_timespec __user *t, - int flags); +/* fs/fcntl.c */ +asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, + compat_ulong_t arg); +asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, + compat_ulong_t arg); -asmlinkage long compat_sys_time(compat_time_t __user *tloc); -asmlinkage long compat_sys_stime(compat_time_t __user *tptr); -asmlinkage long compat_sys_signalfd(int ufd, - const compat_sigset_t __user *sigmask, - compat_size_t sigsetsize); -asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, - const struct compat_itimerspec __user *utmr, - struct compat_itimerspec __user *otmr); -asmlinkage long compat_sys_timerfd_gettime(int ufd, - struct compat_itimerspec __user *otmr); +/* fs/ioctl.c */ +asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, + compat_ulong_t arg); -asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, - __u32 __user *pages, - const int __user *nodes, - int __user *status, - int flags); -asmlinkage long compat_sys_futimesat(unsigned int dfd, - const char __user *filename, - struct compat_timeval __user *t); -asmlinkage long compat_sys_utimes(const char __user *filename, - struct compat_timeval __user *t); -asmlinkage long compat_sys_newstat(const char __user *filename, - struct compat_stat __user *statbuf); -asmlinkage long compat_sys_newlstat(const char __user *filename, - struct compat_stat __user *statbuf); -asmlinkage long compat_sys_newfstatat(unsigned int dfd, - const char __user *filename, - struct compat_stat __user *statbuf, - int flag); -asmlinkage long compat_sys_newfstat(unsigned int fd, - struct compat_stat __user *statbuf); +/* fs/namespace.c */ +asmlinkage long compat_sys_mount(const char __user *dev_name, + const char __user *dir_name, + const char __user *type, compat_ulong_t flags, + const void __user *data); + +/* fs/open.c */ asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_statfs __user *buf); -asmlinkage long compat_sys_fstatfs(unsigned int fd, - struct compat_statfs __user *buf); asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t sz, struct compat_statfs64 __user *buf); +asmlinkage long compat_sys_fstatfs(unsigned int fd, + struct compat_statfs __user *buf); asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct compat_statfs64 __user *buf); -asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, - compat_ulong_t arg); -asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, - compat_ulong_t arg); -asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); -asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, - compat_long_t min_nr, - compat_long_t nr, - struct io_event __user *events, - struct compat_timespec __user *timeout); -asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, - u32 __user *iocb); -asmlinkage long compat_sys_mount(const char __user *dev_name, - const char __user *dir_name, - const char __user *type, compat_ulong_t flags, - const void __user *data); -asmlinkage long compat_sys_old_readdir(unsigned int fd, - struct compat_old_linux_dirent __user *, - unsigned int count); +asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); +asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); +/* No generic prototype for truncate64, ftruncate64, fallocate */ +asmlinkage long compat_sys_openat(int dfd, const char __user *filename, + int flags, umode_t mode); + +/* fs/readdir.c */ asmlinkage long compat_sys_getdents(unsigned int fd, struct compat_linux_dirent __user *dirent, unsigned int count); -asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, - unsigned int nr_segs, unsigned int flags); -asmlinkage long compat_sys_open(const char __user *filename, int flags, - umode_t mode); -asmlinkage long compat_sys_openat(int dfd, const char __user *filename, - int flags, umode_t mode); -asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, - struct file_handle __user *handle, - int flags); -asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); -asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); + +/* fs/read_write.c */ +asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); +asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, + const struct compat_iovec __user *vec, compat_ulong_t vlen); +asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, + const struct compat_iovec __user *vec, compat_ulong_t vlen); +/* No generic prototype for pread64 and pwrite64 */ +asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, + const struct compat_iovec __user *vec, + compat_ulong_t vlen, u32 pos_low, u32 pos_high); +asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, + const struct compat_iovec __user *vec, + compat_ulong_t vlen, u32 pos_low, u32 pos_high); +#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 +asmlinkage long compat_sys_preadv64(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, loff_t pos); +#endif + +#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 +asmlinkage long compat_sys_pwritev64(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, loff_t pos); +#endif + +/* fs/sendfile.c */ +asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, + compat_off_t __user *offset, compat_size_t count); +asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, + compat_loff_t __user *offset, compat_size_t count); + +/* fs/select.c */ asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, @@ -689,110 +616,149 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, struct compat_timespec __user *tsp, const compat_sigset_t __user *sigmask, compat_size_t sigsetsize); + +/* fs/signalfd.c */ asmlinkage long compat_sys_signalfd4(int ufd, const compat_sigset_t __user *sigmask, compat_size_t sigsetsize, int flags); -asmlinkage long compat_sys_get_mempolicy(int __user *policy, - compat_ulong_t __user *nmask, - compat_ulong_t maxnode, - compat_ulong_t addr, - compat_ulong_t flags); -asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, - compat_ulong_t maxnode); -asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, - compat_ulong_t mode, - compat_ulong_t __user *nmask, - compat_ulong_t maxnode, compat_ulong_t flags); -asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, - char __user *optval, unsigned int optlen); -asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, - unsigned flags); -asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, - unsigned vlen, unsigned int flags); -asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, - unsigned int flags); -asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, - unsigned flags); -asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, - unsigned flags, struct sockaddr __user *addr, - int __user *addrlen); -asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, - unsigned vlen, unsigned int flags, - struct compat_timespec __user *timeout); +/* fs/splice.c */ +asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, + unsigned int nr_segs, unsigned int flags); + +/* fs/stat.c */ +asmlinkage long compat_sys_newfstatat(unsigned int dfd, + const char __user *filename, + struct compat_stat __user *statbuf, + int flag); +asmlinkage long compat_sys_newfstat(unsigned int fd, + struct compat_stat __user *statbuf); + +/* fs/sync.c: No generic prototype for sync_file_range and sync_file_range2 */ + +/* fs/timerfd.c */ +asmlinkage long compat_sys_timerfd_gettime(int ufd, + struct compat_itimerspec __user *otmr); +asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, + const struct compat_itimerspec __user *utmr, + struct compat_itimerspec __user *otmr); + +/* fs/utimes.c */ +asmlinkage long compat_sys_utimensat(unsigned int dfd, + const char __user *filename, + struct compat_timespec __user *t, + int flags); + +/* kernel/exit.c */ +asmlinkage long compat_sys_waitid(int, compat_pid_t, + struct compat_siginfo __user *, int, + struct compat_rusage __user *); + + + +/* kernel/futex.c */ +asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, + struct compat_timespec __user *utime, u32 __user *uaddr2, + u32 val3); +asmlinkage long +compat_sys_set_robust_list(struct compat_robust_list_head __user *head, + compat_size_t len); +asmlinkage long +compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, + compat_size_t __user *len_ptr); + +/* kernel/hrtimer.c */ asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, struct compat_timespec __user *rmtp); + +/* kernel/itimer.c */ asmlinkage long compat_sys_getitimer(int which, struct compat_itimerval __user *it); asmlinkage long compat_sys_setitimer(int which, struct compat_itimerval __user *in, struct compat_itimerval __user *out); -asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); -asmlinkage long compat_sys_setrlimit(unsigned int resource, - struct compat_rlimit __user *rlim); -asmlinkage long compat_sys_getrlimit(unsigned int resource, - struct compat_rlimit __user *rlim); -asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); -asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, - unsigned int len, - compat_ulong_t __user *user_mask_ptr); -asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, - unsigned int len, - compat_ulong_t __user *user_mask_ptr); + +/* kernel/kexec.c */ +asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, + compat_ulong_t nr_segments, + struct compat_kexec_segment __user *, + compat_ulong_t flags); + +/* kernel/posix-timers.c */ asmlinkage long compat_sys_timer_create(clockid_t which_clock, struct compat_sigevent __user *timer_event_spec, timer_t __user *created_timer_id); +asmlinkage long compat_sys_timer_gettime(timer_t timer_id, + struct compat_itimerspec __user *setting); asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, struct compat_itimerspec __user *new, struct compat_itimerspec __user *old); -asmlinkage long compat_sys_timer_gettime(timer_t timer_id, - struct compat_itimerspec __user *setting); asmlinkage long compat_sys_clock_settime(clockid_t which_clock, struct compat_timespec __user *tp); asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, struct compat_timespec __user *tp); -asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, - struct compat_timex __user *tp); asmlinkage long compat_sys_clock_getres(clockid_t which_clock, struct compat_timespec __user *tp); asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, struct compat_timespec __user *rqtp, struct compat_timespec __user *rmtp); -asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, - struct compat_siginfo __user *uinfo, - struct compat_timespec __user *uts, compat_size_t sigsetsize); + +/* kernel/ptrace.c */ +asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, + compat_long_t addr, compat_long_t data); + +/* kernel/sched/core.c */ +asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, + unsigned int len, + compat_ulong_t __user *user_mask_ptr); +asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, + unsigned int len, + compat_ulong_t __user *user_mask_ptr); +asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, + struct compat_timespec __user *interval); + +/* kernel/signal.c */ +asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, + compat_stack_t __user *uoss_ptr); asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize); -asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, - compat_sigset_t __user *oset, - compat_size_t sigsetsize); -asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, - compat_size_t sigsetsize); #ifndef CONFIG_ODD_RT_SIGACTION asmlinkage long compat_sys_rt_sigaction(int, const struct compat_sigaction __user *, struct compat_sigaction __user *, compat_size_t); #endif +asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, + compat_sigset_t __user *oset, + compat_size_t sigsetsize); +asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, + compat_size_t sigsetsize); +asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, + struct compat_siginfo __user *uinfo, + struct compat_timespec __user *uts, compat_size_t sigsetsize); asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, struct compat_siginfo __user *uinfo); +/* No generic prototype for rt_sigreturn */ + +/* kernel/sys.c */ +asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); +asmlinkage long compat_sys_getrlimit(unsigned int resource, + struct compat_rlimit __user *rlim); +asmlinkage long compat_sys_setrlimit(unsigned int resource, + struct compat_rlimit __user *rlim); +asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); + +/* kernel/time.c */ +asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, + struct timezone __user *tz); +asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, + struct timezone __user *tz); +asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); + +/* kernel/timer.c */ asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); -asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, - compat_ulong_t arg); -asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, - struct compat_timespec __user *utime, u32 __user *uaddr2, - u32 val3); -asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, - char __user *optval, int __user *optlen); -asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, - compat_ulong_t nr_segments, - struct compat_kexec_segment __user *, - compat_ulong_t flags); -asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, - const struct compat_mq_attr __user *u_mqstat, - struct compat_mq_attr __user *u_omqstat); -asmlinkage long compat_sys_mq_notify(mqd_t mqdes, - const struct compat_sigevent __user *u_notification); + +/* ipc/mqueue.c */ asmlinkage long compat_sys_mq_open(const char __user *u_name, int oflag, compat_mode_t mode, struct compat_mq_attr __user *u_attr); @@ -804,17 +770,92 @@ asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr, compat_size_t msg_len, unsigned int __user *u_msg_prio, const struct compat_timespec __user *u_abs_timeout); -asmlinkage long compat_sys_socketcall(int call, u32 __user *args); -asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); +asmlinkage long compat_sys_mq_notify(mqd_t mqdes, + const struct compat_sigevent __user *u_notification); +asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, + const struct compat_mq_attr __user *u_mqstat, + struct compat_mq_attr __user *u_omqstat); -extern ssize_t compat_rw_copy_check_uvector(int type, - const struct compat_iovec __user *uvector, - unsigned long nr_segs, - unsigned long fast_segs, struct iovec *fast_pointer, - struct iovec **ret_pointer); +/* ipc/msg.c */ +asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr); +asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, + compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); +asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, + compat_ssize_t msgsz, int msgflg); -extern void __user *compat_alloc_user_space(unsigned long len); +/* ipc/sem.c */ +asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); +asmlinkage long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, + unsigned nsems, const struct compat_timespec __user *timeout); +/* ipc/shm.c */ +asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); +asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); + +/* net/socket.c */ +asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, + unsigned flags, struct sockaddr __user *addr, + int __user *addrlen); +asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, + char __user *optval, unsigned int optlen); +asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, + char __user *optval, int __user *optlen); +asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, + unsigned flags); +asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, + unsigned int flags); + +/* mm/filemap.c: No generic prototype for readahead */ + +/* security/keys/keyctl.c */ +asmlinkage long compat_sys_keyctl(u32 option, + u32 arg2, u32 arg3, u32 arg4, u32 arg5); + +/* arch/example/kernel/sys_example.c */ +asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, + const compat_uptr_t __user *envp); + +/* mm/fadvise.c: No generic prototype for fadvise64_64 */ + +/* mm/, CONFIG_MMU only */ +asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, + compat_ulong_t mode, + compat_ulong_t __user *nmask, + compat_ulong_t maxnode, compat_ulong_t flags); +asmlinkage long compat_sys_get_mempolicy(int __user *policy, + compat_ulong_t __user *nmask, + compat_ulong_t maxnode, + compat_ulong_t addr, + compat_ulong_t flags); +asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, + compat_ulong_t maxnode); +asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, + compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, + const compat_ulong_t __user *new_nodes); +asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, + __u32 __user *pages, + const int __user *nodes, + int __user *status, + int flags); + +asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, + compat_pid_t pid, int sig, + struct compat_siginfo __user *uinfo); +asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, + unsigned vlen, unsigned int flags, + struct compat_timespec __user *timeout); +asmlinkage long compat_sys_wait4(compat_pid_t pid, + compat_uint_t __user *stat_addr, int options, + struct compat_rusage __user *ru); +asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, + int, const char __user *); +asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, + struct file_handle __user *handle, + int flags); +asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, + struct compat_timex __user *tp); +asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, + unsigned vlen, unsigned int flags); asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, const struct compat_iovec __user *lvec, compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, @@ -823,14 +864,77 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, const struct compat_iovec __user *lvec, compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, compat_ulong_t riovcnt, compat_ulong_t flags); +asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, + const compat_uptr_t __user *argv, + const compat_uptr_t __user *envp, int flags); +asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, + const struct compat_iovec __user *vec, + compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); +asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, + const struct compat_iovec __user *vec, + compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); +#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 +asmlinkage long compat_sys_readv64v2(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, loff_t pos, rwf_t flags); +#endif -asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, - compat_off_t __user *offset, compat_size_t count); -asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, - compat_loff_t __user *offset, compat_size_t count); -asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, - compat_stack_t __user *uoss_ptr); +#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 +asmlinkage long compat_sys_pwritev64v2(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, loff_t pos, rwf_t flags); +#endif + + +/* + * Deprecated system calls which are still defined in + * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch + */ + +/* __ARCH_WANT_SYSCALL_NO_AT */ +asmlinkage long compat_sys_open(const char __user *filename, int flags, + umode_t mode); +asmlinkage long compat_sys_utimes(const char __user *filename, + struct compat_timeval __user *t); + +/* __ARCH_WANT_SYSCALL_NO_FLAGS */ +asmlinkage long compat_sys_signalfd(int ufd, + const compat_sigset_t __user *sigmask, + compat_size_t sigsetsize); + +/* __ARCH_WANT_SYSCALL_OFF_T */ +asmlinkage long compat_sys_newstat(const char __user *filename, + struct compat_stat __user *statbuf); +asmlinkage long compat_sys_newlstat(const char __user *filename, + struct compat_stat __user *statbuf); + +/* __ARCH_WANT_SYSCALL_DEPRECATED */ +asmlinkage long compat_sys_time(compat_time_t __user *tloc); +asmlinkage long compat_sys_utime(const char __user *filename, + struct compat_utimbuf __user *t); +asmlinkage long compat_sys_futimesat(unsigned int dfd, + const char __user *filename, + struct compat_timeval __user *t); +asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, + compat_ulong_t __user *outp, compat_ulong_t __user *exp, + struct compat_timeval __user *tvp); +asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); +asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, + unsigned flags); +asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); + +/* obsolete: fs/readdir.c */ +asmlinkage long compat_sys_old_readdir(unsigned int fd, + struct compat_old_linux_dirent __user *, + unsigned int count); + +/* obsolete: fs/select.c */ +asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); + +/* obsolete: ipc */ +asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); +/* obsolete: kernel/signal.c */ #ifdef __ARCH_WANT_SYS_SIGPENDING asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); #endif @@ -839,26 +943,18 @@ asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, compat_old_sigset_t __user *oset); #endif +#ifdef CONFIG_COMPAT_OLD_SIGACTION +asmlinkage long compat_sys_sigaction(int sig, + const struct compat_old_sigaction __user *act, + struct compat_old_sigaction __user *oact); +#endif -int compat_restore_altstack(const compat_stack_t __user *uss); -int __compat_save_altstack(compat_stack_t __user *, unsigned long); -#define compat_save_altstack_ex(uss, sp) do { \ - compat_stack_t __user *__uss = uss; \ - struct task_struct *t = current; \ - put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ - put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ - put_user_ex(t->sas_ss_size, &__uss->ss_size); \ - if (t->sas_ss_flags & SS_AUTODISARM) \ - sas_ss_reset(t); \ -} while (0); - -asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, - struct compat_timespec __user *interval); +/* obsolete: kernel/time/time.c */ +asmlinkage long compat_sys_stime(compat_time_t __user *tptr); -asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, - int, const char __user *); +/* obsolete: net/socket.c */ +asmlinkage long compat_sys_socketcall(int call, u32 __user *args); -asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2); /* * For most but not all architectures, "am I in a compat syscall?" and diff --git a/include/linux/futex.h b/include/linux/futex.h index c0fb9a2..821ae50 100644 --- a/include/linux/futex.h +++ b/include/linux/futex.h @@ -9,9 +9,6 @@ struct inode; struct mm_struct; struct task_struct; -long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout, - u32 __user *uaddr2, u32 val2, u32 val3); - extern int handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi); @@ -55,6 +52,9 @@ union futex_key { #ifdef CONFIG_FUTEX extern void exit_robust_list(struct task_struct *curr); + +long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout, + u32 __user *uaddr2, u32 val2, u32 val3); #ifdef CONFIG_HAVE_FUTEX_CMPXCHG #define futex_cmpxchg_enabled 1 #else @@ -64,6 +64,13 @@ extern int futex_cmpxchg_enabled; static inline void exit_robust_list(struct task_struct *curr) { } + +static inline long do_futex(u32 __user *uaddr, int op, u32 val, + ktime_t *timeout, u32 __user *uaddr2, + u32 val2, u32 val3) +{ + return -EINVAL; +} #endif #ifdef CONFIG_FUTEX_PI diff --git a/include/linux/kexec.h b/include/linux/kexec.h index f16f6ce..0ebcbeb 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -223,10 +223,6 @@ struct kimage { extern void machine_kexec(struct kimage *image); extern int machine_kexec_prepare(struct kimage *image); extern void machine_kexec_cleanup(struct kimage *image); -extern asmlinkage long sys_kexec_load(unsigned long entry, - unsigned long nr_segments, - struct kexec_segment __user *segments, - unsigned long flags); extern int kernel_kexec(void); extern struct page *kimage_alloc_control_pages(struct kimage *image, unsigned int order); diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index 2fb6fb1..dc905a4 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -27,6 +27,9 @@ static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) (ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid)); } +int kernel_quotactl(unsigned int cmd, const char __user *special, + qid_t id, void __user *addr); + #if defined(CONFIG_QUOTA) #define quota_error(sb, fmt, args...) \ diff --git a/include/linux/socket.h b/include/linux/socket.h index 9286a5a..e2b6bd4f 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -346,11 +346,40 @@ extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); struct timespec; -/* The __sys_...msg variants allow MSG_CMSG_COMPAT */ -extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); -extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); +/* The __sys_...msg variants allow MSG_CMSG_COMPAT iff + * forbid_cmsg_compat==false + */ +extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg, + unsigned int flags, bool forbid_cmsg_compat); +extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg, + unsigned int flags, bool forbid_cmsg_compat); extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct timespec *timeout); extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, - unsigned int vlen, unsigned int flags); + unsigned int vlen, unsigned int flags, + bool forbid_cmsg_compat); + +/* helpers which do the actual work for syscalls */ +extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size, + unsigned int flags, struct sockaddr __user *addr, + int __user *addr_len); +extern int __sys_sendto(int fd, void __user *buff, size_t len, + unsigned int flags, struct sockaddr __user *addr, + int addr_len); +extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, + int __user *upeer_addrlen, int flags); +extern int __sys_socket(int family, int type, int protocol); +extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); +extern int __sys_connect(int fd, struct sockaddr __user *uservaddr, + int addrlen); +extern int __sys_listen(int fd, int backlog); +extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr, + int __user *usockaddr_len); +extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr, + int __user *usockaddr_len); +extern int __sys_socketpair(int family, int type, int protocol, + int __user *usockvec); +extern int __sys_shutdown(int fd, int how); + + #endif /* _LINUX_SOCKET_H */ diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index a78186d..b961184 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -191,6 +191,8 @@ static inline int is_syscall_trace_event(struct trace_event_call *tp_event) #define SYSCALL_DEFINE0(sname) \ SYSCALL_METADATA(_##sname, 0); \ + asmlinkage long sys_##sname(void); \ + ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \ asmlinkage long sys_##sname(void) #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) @@ -210,6 +212,7 @@ static inline int is_syscall_trace_event(struct trace_event_call *tp_event) #define __SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ __attribute__((alias(__stringify(SyS##name)))); \ + ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ @@ -241,63 +244,292 @@ static inline void addr_limit_user_check(void) #endif } -asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special, - qid_t id, void __user *addr); -asmlinkage long sys_time(time_t __user *tloc); -asmlinkage long sys_stime(time_t __user *tptr); -asmlinkage long sys_gettimeofday(struct timeval __user *tv, - struct timezone __user *tz); -asmlinkage long sys_settimeofday(struct timeval __user *tv, - struct timezone __user *tz); -asmlinkage long sys_adjtimex(struct timex __user *txc_p); +/* + * These syscall function prototypes are kept in the same order as + * include/uapi/asm-generic/unistd.h. Architecture specific entries go below, + * followed by deprecated or obsolete system calls. + * + * Please note that these prototypes here are only provided for information + * purposes, for static analysis, and for linking from the syscall table. + * These functions should not be called elsewhere from kernel code. + */ +asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); +asmlinkage long sys_io_destroy(aio_context_t ctx); +asmlinkage long sys_io_submit(aio_context_t, long, + struct iocb __user * __user *); +asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb, + struct io_event __user *result); +asmlinkage long sys_io_getevents(aio_context_t ctx_id, + long min_nr, + long nr, + struct io_event __user *events, + struct timespec __user *timeout); -asmlinkage long sys_times(struct tms __user *tbuf); +/* fs/xattr.c */ +asmlinkage long sys_setxattr(const char __user *path, const char __user *name, + const void __user *value, size_t size, int flags); +asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, + const void __user *value, size_t size, int flags); +asmlinkage long sys_fsetxattr(int fd, const char __user *name, + const void __user *value, size_t size, int flags); +asmlinkage long sys_getxattr(const char __user *path, const char __user *name, + void __user *value, size_t size); +asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, + void __user *value, size_t size); +asmlinkage long sys_fgetxattr(int fd, const char __user *name, + void __user *value, size_t size); +asmlinkage long sys_listxattr(const char __user *path, char __user *list, + size_t size); +asmlinkage long sys_llistxattr(const char __user *path, char __user *list, + size_t size); +asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); +asmlinkage long sys_removexattr(const char __user *path, + const char __user *name); +asmlinkage long sys_lremovexattr(const char __user *path, + const char __user *name); +asmlinkage long sys_fremovexattr(int fd, const char __user *name); -asmlinkage long sys_gettid(void); -asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp); -asmlinkage long sys_alarm(unsigned int seconds); -asmlinkage long sys_getpid(void); -asmlinkage long sys_getppid(void); -asmlinkage long sys_getuid(void); -asmlinkage long sys_geteuid(void); -asmlinkage long sys_getgid(void); -asmlinkage long sys_getegid(void); -asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); -asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); -asmlinkage long sys_getpgid(pid_t pid); -asmlinkage long sys_getpgrp(void); -asmlinkage long sys_getsid(pid_t pid); -asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); +/* fs/dcache.c */ +asmlinkage long sys_getcwd(char __user *buf, unsigned long size); -asmlinkage long sys_setregid(gid_t rgid, gid_t egid); -asmlinkage long sys_setgid(gid_t gid); -asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); -asmlinkage long sys_setuid(uid_t uid); -asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); -asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); -asmlinkage long sys_setfsuid(uid_t uid); -asmlinkage long sys_setfsgid(gid_t gid); -asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); -asmlinkage long sys_setsid(void); -asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); +/* fs/cookies.c */ +asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); + +/* fs/eventfd.c */ +asmlinkage long sys_eventfd2(unsigned int count, int flags); + +/* fs/eventpoll.c */ +asmlinkage long sys_epoll_create1(int flags); +asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, + struct epoll_event __user *event); +asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, + int maxevents, int timeout, + const sigset_t __user *sigmask, + size_t sigsetsize); + +/* fs/fcntl.c */ +asmlinkage long sys_dup(unsigned int fildes); +asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); +asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); +#if BITS_PER_LONG == 32 +asmlinkage long sys_fcntl64(unsigned int fd, + unsigned int cmd, unsigned long arg); +#endif + +/* fs/inotify_user.c */ +asmlinkage long sys_inotify_init1(int flags); +asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, + u32 mask); +asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); + +/* fs/ioctl.c */ +asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, + unsigned long arg); + +/* fs/ioprio.c */ +asmlinkage long sys_ioprio_set(int which, int who, int ioprio); +asmlinkage long sys_ioprio_get(int which, int who); + +/* fs/locks.c */ +asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); + +/* fs/namei.c */ +asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, + unsigned dev); +asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); +asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); +asmlinkage long sys_symlinkat(const char __user * oldname, + int newdfd, const char __user * newname); +asmlinkage long sys_linkat(int olddfd, const char __user *oldname, + int newdfd, const char __user *newname, int flags); +asmlinkage long sys_renameat(int olddfd, const char __user * oldname, + int newdfd, const char __user * newname); + +/* fs/namespace.c */ +asmlinkage long sys_umount(char __user *name, int flags); +asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, + char __user *type, unsigned long flags, + void __user *data); +asmlinkage long sys_pivot_root(const char __user *new_root, + const char __user *put_old); + +/* fs/nfsctl.c */ +/* fs/open.c */ +asmlinkage long sys_statfs(const char __user * path, + struct statfs __user *buf); +asmlinkage long sys_statfs64(const char __user *path, size_t sz, + struct statfs64 __user *buf); +asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); +asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, + struct statfs64 __user *buf); +asmlinkage long sys_truncate(const char __user *path, long length); +asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); +#if BITS_PER_LONG == 32 +asmlinkage long sys_truncate64(const char __user *path, loff_t length); +asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); +#endif +asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); +asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); +asmlinkage long sys_chdir(const char __user *filename); +asmlinkage long sys_fchdir(unsigned int fd); +asmlinkage long sys_chroot(const char __user *filename); +asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); +asmlinkage long sys_fchmodat(int dfd, const char __user * filename, + umode_t mode); +asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, + gid_t group, int flag); +asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); +asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, + umode_t mode); +asmlinkage long sys_close(unsigned int fd); +asmlinkage long sys_vhangup(void); + +/* fs/pipe.c */ +asmlinkage long sys_pipe2(int __user *fildes, int flags); + +/* fs/quota.c */ +asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, + qid_t id, void __user *addr); + +/* fs/readdir.c */ +asmlinkage long sys_getdents64(unsigned int fd, + struct linux_dirent64 __user *dirent, + unsigned int count); + +/* fs/read_write.c */ +asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, + unsigned long offset_low, loff_t __user *result, + unsigned int whence); +asmlinkage long sys_lseek(unsigned int fd, off_t offset, + unsigned int whence); +asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); +asmlinkage long sys_write(unsigned int fd, const char __user *buf, + size_t count); +asmlinkage long sys_readv(unsigned long fd, + const struct iovec __user *vec, + unsigned long vlen); +asmlinkage long sys_writev(unsigned long fd, + const struct iovec __user *vec, + unsigned long vlen); +asmlinkage long sys_pread64(unsigned int fd, char __user *buf, + size_t count, loff_t pos); +asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, + size_t count, loff_t pos); +asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, + unsigned long vlen, unsigned long pos_l, unsigned long pos_h); +asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, + unsigned long vlen, unsigned long pos_l, unsigned long pos_h); + +/* fs/sendfile.c */ +asmlinkage long sys_sendfile64(int out_fd, int in_fd, + loff_t __user *offset, size_t count); + +/* fs/select.c */ +asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, + fd_set __user *, struct timespec __user *, + void __user *); +asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, + struct timespec __user *, const sigset_t __user *, + size_t); + +/* fs/signalfd.c */ +asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); + +/* fs/splice.c */ +asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, + unsigned long nr_segs, unsigned int flags); +asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, + int fd_out, loff_t __user *off_out, + size_t len, unsigned int flags); +asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); + +/* fs/stat.c */ +asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, + int bufsiz); +asmlinkage long sys_newfstatat(int dfd, const char __user *filename, + struct stat __user *statbuf, int flag); +asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); +#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) +asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); +asmlinkage long sys_fstatat64(int dfd, const char __user *filename, + struct stat64 __user *statbuf, int flag); +#endif + +/* fs/sync.c */ +asmlinkage long sys_sync(void); +asmlinkage long sys_fsync(unsigned int fd); +asmlinkage long sys_fdatasync(unsigned int fd); +asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, + loff_t offset, loff_t nbytes); +asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, + unsigned int flags); + +/* fs/timerfd.c */ +asmlinkage long sys_timerfd_create(int clockid, int flags); +asmlinkage long sys_timerfd_settime(int ufd, int flags, + const struct itimerspec __user *utmr, + struct itimerspec __user *otmr); +asmlinkage long sys_timerfd_gettime(int ufd, struct itimerspec __user *otmr); + +/* fs/utimes.c */ +asmlinkage long sys_utimensat(int dfd, const char __user *filename, + struct timespec __user *utimes, int flags); + +/* kernel/acct.c */ asmlinkage long sys_acct(const char __user *name); + +/* kernel/capability.c */ asmlinkage long sys_capget(cap_user_header_t header, cap_user_data_t dataptr); asmlinkage long sys_capset(cap_user_header_t header, const cap_user_data_t data); + +/* kernel/exec_domain.c */ asmlinkage long sys_personality(unsigned int personality); -asmlinkage long sys_sigpending(old_sigset_t __user *set); -asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, - old_sigset_t __user *oset); -asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, - struct sigaltstack __user *uoss); +/* kernel/exit.c */ +asmlinkage long sys_exit(int error_code); +asmlinkage long sys_exit_group(int error_code); +asmlinkage long sys_waitid(int which, pid_t pid, + struct siginfo __user *infop, + int options, struct rusage __user *ru); +/* kernel/fork.c */ +asmlinkage long sys_set_tid_address(int __user *tidptr); +asmlinkage long sys_unshare(unsigned long unshare_flags); + +/* kernel/futex.c */ +asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, + struct timespec __user *utime, u32 __user *uaddr2, + u32 val3); +asmlinkage long sys_get_robust_list(int pid, + struct robust_list_head __user * __user *head_ptr, + size_t __user *len_ptr); +asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, + size_t len); + +/* kernel/hrtimer.c */ +asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp); + +/* kernel/itimer.c */ asmlinkage long sys_getitimer(int which, struct itimerval __user *value); asmlinkage long sys_setitimer(int which, struct itimerval __user *value, struct itimerval __user *ovalue); + +/* kernel/kexec.c */ +asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, + struct kexec_segment __user *segments, + unsigned long flags); + +/* kernel/module.c */ +asmlinkage long sys_init_module(void __user *umod, unsigned long len, + const char __user *uargs); +asmlinkage long sys_delete_module(const char __user *name_user, + unsigned int flags); + +/* kernel/posix-timers.c */ asmlinkage long sys_timer_create(clockid_t which_clock, struct sigevent __user *timer_event_spec, timer_t __user * created_timer_id); @@ -312,29 +544,27 @@ asmlinkage long sys_clock_settime(clockid_t which_clock, const struct timespec __user *tp); asmlinkage long sys_clock_gettime(clockid_t which_clock, struct timespec __user *tp); -asmlinkage long sys_clock_adjtime(clockid_t which_clock, - struct timex __user *tx); asmlinkage long sys_clock_getres(clockid_t which_clock, struct timespec __user *tp); asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, const struct timespec __user *rqtp, struct timespec __user *rmtp); -asmlinkage long sys_nice(int increment); -asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, - struct sched_param __user *param); +/* kernel/printk.c */ +asmlinkage long sys_syslog(int type, char __user *buf, int len); + +/* kernel/ptrace.c */ +asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, + unsigned long data); +/* kernel/sched/core.c */ + asmlinkage long sys_sched_setparam(pid_t pid, struct sched_param __user *param); -asmlinkage long sys_sched_setattr(pid_t pid, - struct sched_attr __user *attr, - unsigned int flags); +asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, + struct sched_param __user *param); asmlinkage long sys_sched_getscheduler(pid_t pid); asmlinkage long sys_sched_getparam(pid_t pid, struct sched_param __user *param); -asmlinkage long sys_sched_getattr(pid_t pid, - struct sched_attr __user *attr, - unsigned int size, - unsigned int flags); asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, unsigned long __user *user_mask_ptr); asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, @@ -344,54 +574,15 @@ asmlinkage long sys_sched_get_priority_max(int policy); asmlinkage long sys_sched_get_priority_min(int policy); asmlinkage long sys_sched_rr_get_interval(pid_t pid, struct timespec __user *interval); -asmlinkage long sys_setpriority(int which, int who, int niceval); -asmlinkage long sys_getpriority(int which, int who); -asmlinkage long sys_shutdown(int, int); -asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, - void __user *arg); +/* kernel/signal.c */ asmlinkage long sys_restart_syscall(void); -asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, - struct kexec_segment __user *segments, - unsigned long flags); -asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, - unsigned long cmdline_len, - const char __user *cmdline_ptr, - unsigned long flags); - -asmlinkage long sys_exit(int error_code); -asmlinkage long sys_exit_group(int error_code); -asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, - int options, struct rusage __user *ru); -asmlinkage long sys_waitid(int which, pid_t pid, - struct siginfo __user *infop, - int options, struct rusage __user *ru); -asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); -asmlinkage long sys_set_tid_address(int __user *tidptr); -asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, - struct timespec __user *utime, u32 __user *uaddr2, - u32 val3); - -asmlinkage long sys_init_module(void __user *umod, unsigned long len, - const char __user *uargs); -asmlinkage long sys_delete_module(const char __user *name_user, - unsigned int flags); - -#ifdef CONFIG_OLD_SIGSUSPEND -asmlinkage long sys_sigsuspend(old_sigset_t mask); -#endif - -#ifdef CONFIG_OLD_SIGSUSPEND3 -asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); -#endif - +asmlinkage long sys_kill(pid_t pid, int sig); +asmlinkage long sys_tkill(pid_t pid, int sig); +asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); +asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, + struct sigaltstack __user *uoss); asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); - -#ifdef CONFIG_OLD_SIGACTION -asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, - struct old_sigaction __user *); -#endif - #ifndef CONFIG_ODD_RT_SIGACTION asmlinkage long sys_rt_sigaction(int, const struct sigaction __user *, @@ -405,470 +596,136 @@ asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, siginfo_t __user *uinfo, const struct timespec __user *uts, size_t sigsetsize); -asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, - siginfo_t __user *uinfo); -asmlinkage long sys_kill(pid_t pid, int sig); -asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); -asmlinkage long sys_tkill(pid_t pid, int sig); asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); -asmlinkage long sys_sgetmask(void); -asmlinkage long sys_ssetmask(int newmask); -asmlinkage long sys_signal(int sig, __sighandler_t handler); -asmlinkage long sys_pause(void); - -asmlinkage long sys_sync(void); -asmlinkage long sys_fsync(unsigned int fd); -asmlinkage long sys_fdatasync(unsigned int fd); -asmlinkage long sys_bdflush(int func, long data); -asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, - char __user *type, unsigned long flags, - void __user *data); -asmlinkage long sys_umount(char __user *name, int flags); -asmlinkage long sys_oldumount(char __user *name); -asmlinkage long sys_truncate(const char __user *path, long length); -asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); -asmlinkage long sys_stat(const char __user *filename, - struct __old_kernel_stat __user *statbuf); -asmlinkage long sys_statfs(const char __user * path, - struct statfs __user *buf); -asmlinkage long sys_statfs64(const char __user *path, size_t sz, - struct statfs64 __user *buf); -asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); -asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, - struct statfs64 __user *buf); -asmlinkage long sys_lstat(const char __user *filename, - struct __old_kernel_stat __user *statbuf); -asmlinkage long sys_fstat(unsigned int fd, - struct __old_kernel_stat __user *statbuf); -asmlinkage long sys_newstat(const char __user *filename, - struct stat __user *statbuf); -asmlinkage long sys_newlstat(const char __user *filename, - struct stat __user *statbuf); -asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); -asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); -#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) -asmlinkage long sys_stat64(const char __user *filename, - struct stat64 __user *statbuf); -asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); -asmlinkage long sys_lstat64(const char __user *filename, - struct stat64 __user *statbuf); -asmlinkage long sys_fstatat64(int dfd, const char __user *filename, - struct stat64 __user *statbuf, int flag); -#endif -#if BITS_PER_LONG == 32 -asmlinkage long sys_truncate64(const char __user *path, loff_t length); -asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); -#endif - -asmlinkage long sys_setxattr(const char __user *path, const char __user *name, - const void __user *value, size_t size, int flags); -asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, - const void __user *value, size_t size, int flags); -asmlinkage long sys_fsetxattr(int fd, const char __user *name, - const void __user *value, size_t size, int flags); -asmlinkage long sys_getxattr(const char __user *path, const char __user *name, - void __user *value, size_t size); -asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, - void __user *value, size_t size); -asmlinkage long sys_fgetxattr(int fd, const char __user *name, - void __user *value, size_t size); -asmlinkage long sys_listxattr(const char __user *path, char __user *list, - size_t size); -asmlinkage long sys_llistxattr(const char __user *path, char __user *list, - size_t size); -asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); -asmlinkage long sys_removexattr(const char __user *path, - const char __user *name); -asmlinkage long sys_lremovexattr(const char __user *path, - const char __user *name); -asmlinkage long sys_fremovexattr(int fd, const char __user *name); - -asmlinkage long sys_brk(unsigned long brk); -asmlinkage long sys_mprotect(unsigned long start, size_t len, - unsigned long prot); -asmlinkage long sys_mremap(unsigned long addr, - unsigned long old_len, unsigned long new_len, - unsigned long flags, unsigned long new_addr); -asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, - unsigned long prot, unsigned long pgoff, - unsigned long flags); -asmlinkage long sys_msync(unsigned long start, size_t len, int flags); -asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); -asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); -asmlinkage long sys_munmap(unsigned long addr, size_t len); -asmlinkage long sys_mlock(unsigned long start, size_t len); -asmlinkage long sys_munlock(unsigned long start, size_t len); -asmlinkage long sys_mlockall(int flags); -asmlinkage long sys_munlockall(void); -asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); -asmlinkage long sys_mincore(unsigned long start, size_t len, - unsigned char __user * vec); - -asmlinkage long sys_pivot_root(const char __user *new_root, - const char __user *put_old); -asmlinkage long sys_chroot(const char __user *filename); -asmlinkage long sys_mknod(const char __user *filename, umode_t mode, - unsigned dev); -asmlinkage long sys_link(const char __user *oldname, - const char __user *newname); -asmlinkage long sys_symlink(const char __user *old, const char __user *new); -asmlinkage long sys_unlink(const char __user *pathname); -asmlinkage long sys_rename(const char __user *oldname, - const char __user *newname); -asmlinkage long sys_chmod(const char __user *filename, umode_t mode); -asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); - -asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); -#if BITS_PER_LONG == 32 -asmlinkage long sys_fcntl64(unsigned int fd, - unsigned int cmd, unsigned long arg); -#endif -asmlinkage long sys_pipe(int __user *fildes); -asmlinkage long sys_pipe2(int __user *fildes, int flags); -asmlinkage long sys_dup(unsigned int fildes); -asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); -asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); -asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); -asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, - unsigned long arg); -asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); -asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); -asmlinkage long sys_io_destroy(aio_context_t ctx); -asmlinkage long sys_io_getevents(aio_context_t ctx_id, - long min_nr, - long nr, - struct io_event __user *events, - struct timespec __user *timeout); -asmlinkage long sys_io_submit(aio_context_t, long, - struct iocb __user * __user *); -asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb, - struct io_event __user *result); -asmlinkage long sys_sendfile(int out_fd, int in_fd, - off_t __user *offset, size_t count); -asmlinkage long sys_sendfile64(int out_fd, int in_fd, - loff_t __user *offset, size_t count); -asmlinkage long sys_readlink(const char __user *path, - char __user *buf, int bufsiz); -asmlinkage long sys_creat(const char __user *pathname, umode_t mode); -asmlinkage long sys_open(const char __user *filename, - int flags, umode_t mode); -asmlinkage long sys_close(unsigned int fd); -asmlinkage long sys_access(const char __user *filename, int mode); -asmlinkage long sys_vhangup(void); -asmlinkage long sys_chown(const char __user *filename, - uid_t user, gid_t group); -asmlinkage long sys_lchown(const char __user *filename, - uid_t user, gid_t group); -asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); -#ifdef CONFIG_HAVE_UID16 -asmlinkage long sys_chown16(const char __user *filename, - old_uid_t user, old_gid_t group); -asmlinkage long sys_lchown16(const char __user *filename, - old_uid_t user, old_gid_t group); -asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); -asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); -asmlinkage long sys_setgid16(old_gid_t gid); -asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); -asmlinkage long sys_setuid16(old_uid_t uid); -asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); -asmlinkage long sys_getresuid16(old_uid_t __user *ruid, - old_uid_t __user *euid, old_uid_t __user *suid); -asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); -asmlinkage long sys_getresgid16(old_gid_t __user *rgid, - old_gid_t __user *egid, old_gid_t __user *sgid); -asmlinkage long sys_setfsuid16(old_uid_t uid); -asmlinkage long sys_setfsgid16(old_gid_t gid); -asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); -asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); -asmlinkage long sys_getuid16(void); -asmlinkage long sys_geteuid16(void); -asmlinkage long sys_getgid16(void); -asmlinkage long sys_getegid16(void); -#endif -asmlinkage long sys_utime(char __user *filename, - struct utimbuf __user *times); -asmlinkage long sys_utimes(char __user *filename, - struct timeval __user *utimes); -asmlinkage long sys_lseek(unsigned int fd, off_t offset, - unsigned int whence); -asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, - unsigned long offset_low, loff_t __user *result, - unsigned int whence); -asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); -asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); -asmlinkage long sys_readv(unsigned long fd, - const struct iovec __user *vec, - unsigned long vlen); -asmlinkage long sys_write(unsigned int fd, const char __user *buf, - size_t count); -asmlinkage long sys_writev(unsigned long fd, - const struct iovec __user *vec, - unsigned long vlen); -asmlinkage long sys_pread64(unsigned int fd, char __user *buf, - size_t count, loff_t pos); -asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, - size_t count, loff_t pos); -asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, unsigned long pos_l, unsigned long pos_h); -asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, unsigned long pos_l, unsigned long pos_h, - rwf_t flags); -asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, unsigned long pos_l, unsigned long pos_h); -asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, unsigned long pos_l, unsigned long pos_h, - rwf_t flags); -asmlinkage long sys_getcwd(char __user *buf, unsigned long size); -asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); -asmlinkage long sys_chdir(const char __user *filename); -asmlinkage long sys_fchdir(unsigned int fd); -asmlinkage long sys_rmdir(const char __user *pathname); -asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); -asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, - qid_t id, void __user *addr); -asmlinkage long sys_getdents(unsigned int fd, - struct linux_dirent __user *dirent, - unsigned int count); -asmlinkage long sys_getdents64(unsigned int fd, - struct linux_dirent64 __user *dirent, - unsigned int count); - -asmlinkage long sys_setsockopt(int fd, int level, int optname, - char __user *optval, int optlen); -asmlinkage long sys_getsockopt(int fd, int level, int optname, - char __user *optval, int __user *optlen); -asmlinkage long sys_bind(int, struct sockaddr __user *, int); -asmlinkage long sys_connect(int, struct sockaddr __user *, int); -asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); -asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); -asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); -asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); -asmlinkage long sys_send(int, void __user *, size_t, unsigned); -asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, - struct sockaddr __user *, int); -asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); -asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, - unsigned int vlen, unsigned flags); -asmlinkage long sys_recv(int, void __user *, size_t, unsigned); -asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, - struct sockaddr __user *, int __user *); -asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); -asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, - unsigned int vlen, unsigned flags, - struct timespec __user *timeout); -asmlinkage long sys_socket(int, int, int); -asmlinkage long sys_socketpair(int, int, int, int __user *); -asmlinkage long sys_socketcall(int call, unsigned long __user *args); -asmlinkage long sys_listen(int, int); -asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, - int timeout); -asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, - fd_set __user *exp, struct timeval __user *tvp); -asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); -asmlinkage long sys_epoll_create(int size); -asmlinkage long sys_epoll_create1(int flags); -asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, - struct epoll_event __user *event); -asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, - int maxevents, int timeout); -asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, - int maxevents, int timeout, - const sigset_t __user *sigmask, - size_t sigsetsize); -asmlinkage long sys_gethostname(char __user *name, int len); +/* kernel/sys.c */ +asmlinkage long sys_setpriority(int which, int who, int niceval); +asmlinkage long sys_getpriority(int which, int who); +asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, + void __user *arg); +asmlinkage long sys_setregid(gid_t rgid, gid_t egid); +asmlinkage long sys_setgid(gid_t gid); +asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); +asmlinkage long sys_setuid(uid_t uid); +asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); +asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); +asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); +asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); +asmlinkage long sys_setfsuid(uid_t uid); +asmlinkage long sys_setfsgid(gid_t gid); +asmlinkage long sys_times(struct tms __user *tbuf); +asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); +asmlinkage long sys_getpgid(pid_t pid); +asmlinkage long sys_getsid(pid_t pid); +asmlinkage long sys_setsid(void); +asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); +asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); +asmlinkage long sys_newuname(struct new_utsname __user *name); asmlinkage long sys_sethostname(char __user *name, int len); asmlinkage long sys_setdomainname(char __user *name, int len); -asmlinkage long sys_newuname(struct new_utsname __user *name); -asmlinkage long sys_uname(struct old_utsname __user *); -asmlinkage long sys_olduname(struct oldold_utsname __user *); - asmlinkage long sys_getrlimit(unsigned int resource, struct rlimit __user *rlim); -#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT -asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); -#endif asmlinkage long sys_setrlimit(unsigned int resource, struct rlimit __user *rlim); -asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, - const struct rlimit64 __user *new_rlim, - struct rlimit64 __user *old_rlim); asmlinkage long sys_getrusage(int who, struct rusage __user *ru); asmlinkage long sys_umask(int mask); +asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, + unsigned long arg4, unsigned long arg5); +asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); +/* kernel/time.c */ +asmlinkage long sys_gettimeofday(struct timeval __user *tv, + struct timezone __user *tz); +asmlinkage long sys_settimeofday(struct timeval __user *tv, + struct timezone __user *tz); +asmlinkage long sys_adjtimex(struct timex __user *txc_p); + +/* kernel/timer.c */ +asmlinkage long sys_getpid(void); +asmlinkage long sys_getppid(void); +asmlinkage long sys_getuid(void); +asmlinkage long sys_geteuid(void); +asmlinkage long sys_getgid(void); +asmlinkage long sys_getegid(void); +asmlinkage long sys_gettid(void); +asmlinkage long sys_sysinfo(struct sysinfo __user *info); + +/* ipc/mqueue.c */ +asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); +asmlinkage long sys_mq_unlink(const char __user *name); +asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct timespec __user *abs_timeout); +asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct timespec __user *abs_timeout); +asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); +asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); + +/* ipc/msg.c */ asmlinkage long sys_msgget(key_t key, int msgflg); -asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, - size_t msgsz, int msgflg); +asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, long msgtyp, int msgflg); -asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); +asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, + size_t msgsz, int msgflg); +/* ipc/sem.c */ asmlinkage long sys_semget(key_t key, int nsems, int semflg); -asmlinkage long sys_semop(int semid, struct sembuf __user *sops, - unsigned nsops); asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, unsigned nsops, const struct timespec __user *timeout); -asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); +asmlinkage long sys_semop(int semid, struct sembuf __user *sops, + unsigned nsops); + +/* ipc/shm.c */ asmlinkage long sys_shmget(key_t key, size_t size, int flag); -asmlinkage long sys_shmdt(char __user *shmaddr); asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); -asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, - unsigned long third, void __user *ptr, long fifth); +asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); +asmlinkage long sys_shmdt(char __user *shmaddr); -asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); -asmlinkage long sys_mq_unlink(const char __user *name); -asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct timespec __user *abs_timeout); -asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct timespec __user *abs_timeout); -asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); -asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); +/* net/socket.c */ +asmlinkage long sys_socket(int, int, int); +asmlinkage long sys_socketpair(int, int, int, int __user *); +asmlinkage long sys_bind(int, struct sockaddr __user *, int); +asmlinkage long sys_listen(int, int); +asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); +asmlinkage long sys_connect(int, struct sockaddr __user *, int); +asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); +asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); +asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, + struct sockaddr __user *, int); +asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, + struct sockaddr __user *, int __user *); +asmlinkage long sys_setsockopt(int fd, int level, int optname, + char __user *optval, int optlen); +asmlinkage long sys_getsockopt(int fd, int level, int optname, + char __user *optval, int __user *optlen); +asmlinkage long sys_shutdown(int, int); +asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); +asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); -asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); -asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, - unsigned long off, unsigned long len, - void __user *buf); -asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, - unsigned long off, unsigned long len, - void __user *buf); +/* mm/filemap.c */ +asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); -asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, - unsigned long arg4, unsigned long arg5); -asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); -asmlinkage long sys_swapoff(const char __user *specialfile); -asmlinkage long sys_sysctl(struct __sysctl_args __user *args); -asmlinkage long sys_sysinfo(struct sysinfo __user *info); -asmlinkage long sys_sysfs(int option, - unsigned long arg1, unsigned long arg2); -asmlinkage long sys_syslog(int type, char __user *buf, int len); -asmlinkage long sys_uselib(const char __user *library); -asmlinkage long sys_ni_syscall(void); -asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, - unsigned long data); +/* mm/nommu.c, also with MMU */ +asmlinkage long sys_brk(unsigned long brk); +asmlinkage long sys_munmap(unsigned long addr, size_t len); +asmlinkage long sys_mremap(unsigned long addr, + unsigned long old_len, unsigned long new_len, + unsigned long flags, unsigned long new_addr); +/* security/keys/keyctl.c */ asmlinkage long sys_add_key(const char __user *_type, const char __user *_description, const void __user *_payload, size_t plen, key_serial_t destringid); - asmlinkage long sys_request_key(const char __user *_type, const char __user *_description, const char __user *_callout_info, key_serial_t destringid); - asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); -asmlinkage long sys_ioprio_set(int which, int who, int ioprio); -asmlinkage long sys_ioprio_get(int which, int who); -asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, - unsigned long maxnode); -asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, - const unsigned long __user *from, - const unsigned long __user *to); -asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, - const void __user * __user *pages, - const int __user *nodes, - int __user *status, - int flags); -asmlinkage long sys_mbind(unsigned long start, unsigned long len, - unsigned long mode, - const unsigned long __user *nmask, - unsigned long maxnode, - unsigned flags); -asmlinkage long sys_get_mempolicy(int __user *policy, - unsigned long __user *nmask, - unsigned long maxnode, - unsigned long addr, unsigned long flags); - -asmlinkage long sys_inotify_init(void); -asmlinkage long sys_inotify_init1(int flags); -asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, - u32 mask); -asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); - -asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, - __u32 __user *ustatus); -asmlinkage long sys_spu_create(const char __user *name, - unsigned int flags, umode_t mode, int fd); - -asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, - unsigned dev); -asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); -asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); -asmlinkage long sys_symlinkat(const char __user * oldname, - int newdfd, const char __user * newname); -asmlinkage long sys_linkat(int olddfd, const char __user *oldname, - int newdfd, const char __user *newname, int flags); -asmlinkage long sys_renameat(int olddfd, const char __user * oldname, - int newdfd, const char __user * newname); -asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, - int newdfd, const char __user *newname, - unsigned int flags); -asmlinkage long sys_futimesat(int dfd, const char __user *filename, - struct timeval __user *utimes); -asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); -asmlinkage long sys_fchmodat(int dfd, const char __user * filename, - umode_t mode); -asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, - gid_t group, int flag); -asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, - umode_t mode); -asmlinkage long sys_newfstatat(int dfd, const char __user *filename, - struct stat __user *statbuf, int flag); -asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, - int bufsiz); -asmlinkage long sys_utimensat(int dfd, const char __user *filename, - struct timespec __user *utimes, int flags); -asmlinkage long sys_unshare(unsigned long unshare_flags); - -asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, - int fd_out, loff_t __user *off_out, - size_t len, unsigned int flags); - -asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, - unsigned long nr_segs, unsigned int flags); - -asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); - -asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, - unsigned int flags); -asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, - loff_t offset, loff_t nbytes); -asmlinkage long sys_get_robust_list(int pid, - struct robust_list_head __user * __user *head_ptr, - size_t __user *len_ptr); -asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, - size_t len); -asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); -asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); -asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); -asmlinkage long sys_timerfd_create(int clockid, int flags); -asmlinkage long sys_timerfd_settime(int ufd, int flags, - const struct itimerspec __user *utmr, - struct itimerspec __user *otmr); -asmlinkage long sys_timerfd_gettime(int ufd, struct itimerspec __user *otmr); -asmlinkage long sys_eventfd(unsigned int count); -asmlinkage long sys_eventfd2(unsigned int count, int flags); -asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); -asmlinkage long sys_userfaultfd(int flags); -asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); -asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); -asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, - fd_set __user *, struct timespec __user *, - void __user *); -asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, - struct timespec __user *, const sigset_t __user *, - size_t); -asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); -asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, - u64 mask, int fd, - const char __user *pathname); -asmlinkage long sys_syncfs(int fd); - -asmlinkage long sys_fork(void); -asmlinkage long sys_vfork(void); +/* arch/example/kernel/sys_example.c */ #ifdef CONFIG_CLONE_BACKWARDS asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, int __user *); @@ -881,26 +738,80 @@ asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, int __user *, unsigned long); #endif #endif - asmlinkage long sys_execve(const char __user *filename, const char __user *const __user *argv, const char __user *const __user *envp); +/* mm/fadvise.c */ +asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); + +/* mm/, CONFIG_MMU only */ +asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); +asmlinkage long sys_swapoff(const char __user *specialfile); +asmlinkage long sys_mprotect(unsigned long start, size_t len, + unsigned long prot); +asmlinkage long sys_msync(unsigned long start, size_t len, int flags); +asmlinkage long sys_mlock(unsigned long start, size_t len); +asmlinkage long sys_munlock(unsigned long start, size_t len); +asmlinkage long sys_mlockall(int flags); +asmlinkage long sys_munlockall(void); +asmlinkage long sys_mincore(unsigned long start, size_t len, + unsigned char __user * vec); +asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); +asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, + unsigned long prot, unsigned long pgoff, + unsigned long flags); +asmlinkage long sys_mbind(unsigned long start, unsigned long len, + unsigned long mode, + const unsigned long __user *nmask, + unsigned long maxnode, + unsigned flags); +asmlinkage long sys_get_mempolicy(int __user *policy, + unsigned long __user *nmask, + unsigned long maxnode, + unsigned long addr, unsigned long flags); +asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, + unsigned long maxnode); +asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, + const unsigned long __user *from, + const unsigned long __user *to); +asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, + const void __user * __user *pages, + const int __user *nodes, + int __user *status, + int flags); + +asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, + siginfo_t __user *uinfo); asmlinkage long sys_perf_event_open( struct perf_event_attr __user *attr_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags); +asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); +asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, + unsigned int vlen, unsigned flags, + struct timespec __user *timeout); -asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff); -asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); +asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, + int options, struct rusage __user *ru); +asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, + const struct rlimit64 __user *new_rlim, + struct rlimit64 __user *old_rlim); +asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); +asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, + u64 mask, int fd, + const char __user *pathname); asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, struct file_handle __user *handle, int __user *mnt_id, int flag); asmlinkage long sys_open_by_handle_at(int mountdirfd, struct file_handle __user *handle, int flags); +asmlinkage long sys_clock_adjtime(clockid_t which_clock, + struct timex __user *tx); +asmlinkage long sys_syncfs(int fd); asmlinkage long sys_setns(int fd, int nstype); +asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, + unsigned int vlen, unsigned flags); asmlinkage long sys_process_vm_readv(pid_t pid, const struct iovec __user *lvec, unsigned long liovcnt, @@ -913,27 +824,40 @@ asmlinkage long sys_process_vm_writev(pid_t pid, const struct iovec __user *rvec, unsigned long riovcnt, unsigned long flags); - asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2); asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); +asmlinkage long sys_sched_setattr(pid_t pid, + struct sched_attr __user *attr, + unsigned int flags); +asmlinkage long sys_sched_getattr(pid_t pid, + struct sched_attr __user *attr, + unsigned int size, + unsigned int flags); +asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, + int newdfd, const char __user *newname, + unsigned int flags); asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, const char __user *uargs); asmlinkage long sys_getrandom(char __user *buf, size_t count, unsigned int flags); +asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); - asmlinkage long sys_execveat(int dfd, const char __user *filename, const char __user *const __user *argv, const char __user *const __user *envp, int flags); - +asmlinkage long sys_userfaultfd(int flags); asmlinkage long sys_membarrier(int cmd, int flags); +asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, int fd_out, loff_t __user *off_out, size_t len, unsigned int flags); - -asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); - +asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, + unsigned long vlen, unsigned long pos_l, unsigned long pos_h, + rwf_t flags); +asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, + unsigned long vlen, unsigned long pos_l, unsigned long pos_h, + rwf_t flags); asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, unsigned long prot, int pkey); asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); @@ -941,4 +865,379 @@ asmlinkage long sys_pkey_free(int pkey); asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, unsigned mask, struct statx __user *buffer); + +/* + * Architecture-specific system calls + */ + +/* arch/x86/kernel/ioport.c */ +asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); + +/* pciconfig: alpha, arm, arm64, ia64, sparc */ +asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, + unsigned long off, unsigned long len, + void __user *buf); +asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, + unsigned long off, unsigned long len, + void __user *buf); +asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); + +/* powerpc */ +asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, + __u32 __user *ustatus); +asmlinkage long sys_spu_create(const char __user *name, + unsigned int flags, umode_t mode, int fd); + + +/* + * Deprecated system calls which are still defined in + * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch + */ + +/* __ARCH_WANT_SYSCALL_NO_AT */ +asmlinkage long sys_open(const char __user *filename, + int flags, umode_t mode); +asmlinkage long sys_link(const char __user *oldname, + const char __user *newname); +asmlinkage long sys_unlink(const char __user *pathname); +asmlinkage long sys_mknod(const char __user *filename, umode_t mode, + unsigned dev); +asmlinkage long sys_chmod(const char __user *filename, umode_t mode); +asmlinkage long sys_chown(const char __user *filename, + uid_t user, gid_t group); +asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); +asmlinkage long sys_rmdir(const char __user *pathname); +asmlinkage long sys_lchown(const char __user *filename, + uid_t user, gid_t group); +asmlinkage long sys_access(const char __user *filename, int mode); +asmlinkage long sys_rename(const char __user *oldname, + const char __user *newname); +asmlinkage long sys_symlink(const char __user *old, const char __user *new); +asmlinkage long sys_utimes(char __user *filename, + struct timeval __user *utimes); +#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) +asmlinkage long sys_stat64(const char __user *filename, + struct stat64 __user *statbuf); +asmlinkage long sys_lstat64(const char __user *filename, + struct stat64 __user *statbuf); +#endif + +/* __ARCH_WANT_SYSCALL_NO_FLAGS */ +asmlinkage long sys_pipe(int __user *fildes); +asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); +asmlinkage long sys_epoll_create(int size); +asmlinkage long sys_inotify_init(void); +asmlinkage long sys_eventfd(unsigned int count); +asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); + +/* __ARCH_WANT_SYSCALL_OFF_T */ +asmlinkage long sys_sendfile(int out_fd, int in_fd, + off_t __user *offset, size_t count); +asmlinkage long sys_newstat(const char __user *filename, + struct stat __user *statbuf); +asmlinkage long sys_newlstat(const char __user *filename, + struct stat __user *statbuf); +asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); + +/* __ARCH_WANT_SYSCALL_DEPRECATED */ +asmlinkage long sys_alarm(unsigned int seconds); +asmlinkage long sys_getpgrp(void); +asmlinkage long sys_pause(void); +asmlinkage long sys_time(time_t __user *tloc); +asmlinkage long sys_utime(char __user *filename, + struct utimbuf __user *times); +asmlinkage long sys_creat(const char __user *pathname, umode_t mode); +asmlinkage long sys_getdents(unsigned int fd, + struct linux_dirent __user *dirent, + unsigned int count); +asmlinkage long sys_futimesat(int dfd, const char __user *filename, + struct timeval __user *utimes); +asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, + fd_set __user *exp, struct timeval __user *tvp); +asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, + int timeout); +asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, + int maxevents, int timeout); +asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); +asmlinkage long sys_vfork(void); +asmlinkage long sys_recv(int, void __user *, size_t, unsigned); +asmlinkage long sys_send(int, void __user *, size_t, unsigned); +asmlinkage long sys_bdflush(int func, long data); +asmlinkage long sys_oldumount(char __user *name); +asmlinkage long sys_uselib(const char __user *library); +asmlinkage long sys_sysctl(struct __sysctl_args __user *args); +asmlinkage long sys_sysfs(int option, + unsigned long arg1, unsigned long arg2); +asmlinkage long sys_fork(void); + +/* obsolete: kernel/time/time.c */ +asmlinkage long sys_stime(time_t __user *tptr); + +/* obsolete: kernel/signal.c */ +asmlinkage long sys_sigpending(old_sigset_t __user *uset); +asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, + old_sigset_t __user *oset); +#ifdef CONFIG_OLD_SIGSUSPEND +asmlinkage long sys_sigsuspend(old_sigset_t mask); +#endif + +#ifdef CONFIG_OLD_SIGSUSPEND3 +asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); +#endif + +#ifdef CONFIG_OLD_SIGACTION +asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, + struct old_sigaction __user *); +#endif +asmlinkage long sys_sgetmask(void); +asmlinkage long sys_ssetmask(int newmask); +asmlinkage long sys_signal(int sig, __sighandler_t handler); + +/* obsolete: kernel/sched/core.c */ +asmlinkage long sys_nice(int increment); + +/* obsolete: kernel/kexec_file.c */ +asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, + unsigned long cmdline_len, + const char __user *cmdline_ptr, + unsigned long flags); + +/* obsolete: kernel/exit.c */ +asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); + +/* obsolete: kernel/uid16.c */ +#ifdef CONFIG_HAVE_UID16 +asmlinkage long sys_chown16(const char __user *filename, + old_uid_t user, old_gid_t group); +asmlinkage long sys_lchown16(const char __user *filename, + old_uid_t user, old_gid_t group); +asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); +asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); +asmlinkage long sys_setgid16(old_gid_t gid); +asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); +asmlinkage long sys_setuid16(old_uid_t uid); +asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); +asmlinkage long sys_getresuid16(old_uid_t __user *ruid, + old_uid_t __user *euid, old_uid_t __user *suid); +asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); +asmlinkage long sys_getresgid16(old_gid_t __user *rgid, + old_gid_t __user *egid, old_gid_t __user *sgid); +asmlinkage long sys_setfsuid16(old_uid_t uid); +asmlinkage long sys_setfsgid16(old_gid_t gid); +asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); +asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); +asmlinkage long sys_getuid16(void); +asmlinkage long sys_geteuid16(void); +asmlinkage long sys_getgid16(void); +asmlinkage long sys_getegid16(void); +#endif + +/* obsolete: net/socket.c */ +asmlinkage long sys_socketcall(int call, unsigned long __user *args); + +/* obsolete: fs/stat.c */ +asmlinkage long sys_stat(const char __user *filename, + struct __old_kernel_stat __user *statbuf); +asmlinkage long sys_lstat(const char __user *filename, + struct __old_kernel_stat __user *statbuf); +asmlinkage long sys_fstat(unsigned int fd, + struct __old_kernel_stat __user *statbuf); +asmlinkage long sys_readlink(const char __user *path, + char __user *buf, int bufsiz); + +/* obsolete: fs/select.c */ +asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); + +/* obsolete: fs/readdir.c */ +asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); + +/* obsolete: kernel/sys.c */ +asmlinkage long sys_gethostname(char __user *name, int len); +asmlinkage long sys_uname(struct old_utsname __user *); +asmlinkage long sys_olduname(struct oldold_utsname __user *); +#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT +asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); +#endif + +/* obsolete: ipc */ +asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, + unsigned long third, void __user *ptr, long fifth); + +/* obsolete: mm/ */ +asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff); +asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); + + +/* + * Not a real system call, but a placeholder for syscalls which are + * not implemented -- see kernel/sys_ni.c + */ +asmlinkage long sys_ni_syscall(void); + + +/* + * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. + * Instead, use one of the functions which work equivalently, such as + * the ksys_xyzyyz() functions prototyped below. + */ + +int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type, + unsigned long flags, void __user *data); +int ksys_umount(char __user *name, int flags); +int ksys_dup(unsigned int fildes); +int ksys_chroot(const char __user *filename); +ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count); +int ksys_chdir(const char __user *filename); +int ksys_fchmod(unsigned int fd, umode_t mode); +int ksys_fchown(unsigned int fd, uid_t user, gid_t group); +int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, + unsigned int count); +int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); +off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence); +ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); +void ksys_sync(void); +int ksys_unshare(unsigned long unshare_flags); +int ksys_setsid(void); +int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, + unsigned int flags); +ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, + loff_t pos); +ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, + size_t count, loff_t pos); +int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len); +#ifdef CONFIG_ADVISE_SYSCALLS +int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); +#else +static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, + int advice) +{ + return -EINVAL; +} +#endif +unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff); +ssize_t ksys_readahead(int fd, loff_t offset, size_t count); + +/* + * The following kernel syscall equivalents are just wrappers to fs-internal + * functions. Therefore, provide stubs to be inlined at the callsites. + */ +extern long do_unlinkat(int dfd, struct filename *name); + +static inline long ksys_unlink(const char __user *pathname) +{ + return do_unlinkat(AT_FDCWD, getname(pathname)); +} + +extern long do_rmdir(int dfd, const char __user *pathname); + +static inline long ksys_rmdir(const char __user *pathname) +{ + return do_rmdir(AT_FDCWD, pathname); +} + +extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode); + +static inline long ksys_mkdir(const char __user *pathname, umode_t mode) +{ + return do_mkdirat(AT_FDCWD, pathname, mode); +} + +extern long do_symlinkat(const char __user *oldname, int newdfd, + const char __user *newname); + +static inline long ksys_symlink(const char __user *oldname, + const char __user *newname) +{ + return do_symlinkat(oldname, AT_FDCWD, newname); +} + +extern long do_mknodat(int dfd, const char __user *filename, umode_t mode, + unsigned int dev); + +static inline long ksys_mknod(const char __user *filename, umode_t mode, + unsigned int dev) +{ + return do_mknodat(AT_FDCWD, filename, mode, dev); +} + +extern int do_linkat(int olddfd, const char __user *oldname, int newdfd, + const char __user *newname, int flags); + +static inline long ksys_link(const char __user *oldname, + const char __user *newname) +{ + return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); +} + +extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode); + +static inline int ksys_chmod(const char __user *filename, umode_t mode) +{ + return do_fchmodat(AT_FDCWD, filename, mode); +} + +extern long do_faccessat(int dfd, const char __user *filename, int mode); + +static inline long ksys_access(const char __user *filename, int mode) +{ + return do_faccessat(AT_FDCWD, filename, mode); +} + +extern int do_fchownat(int dfd, const char __user *filename, uid_t user, + gid_t group, int flag); + +static inline long ksys_chown(const char __user *filename, uid_t user, + gid_t group) +{ + return do_fchownat(AT_FDCWD, filename, user, group, 0); +} + +static inline long ksys_lchown(const char __user *filename, uid_t user, + gid_t group) +{ + return do_fchownat(AT_FDCWD, filename, user, group, + AT_SYMLINK_NOFOLLOW); +} + +extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); + +static inline long ksys_ftruncate(unsigned int fd, unsigned long length) +{ + return do_sys_ftruncate(fd, length, 1); +} + +extern int __close_fd(struct files_struct *files, unsigned int fd); + +/* + * In contrast to sys_close(), this stub does not check whether the syscall + * should or should not be restarted, but returns the raw error codes from + * __close_fd(). + */ +static inline int ksys_close(unsigned int fd) +{ + return __close_fd(current->files, fd); +} + +extern long do_sys_open(int dfd, const char __user *filename, int flags, + umode_t mode); + +static inline long ksys_open(const char __user *filename, int flags, + umode_t mode) +{ + if (force_o_largefile()) + flags |= O_LARGEFILE; + return do_sys_open(AT_FDCWD, filename, flags, mode); +} + +extern long do_sys_truncate(const char __user *pathname, loff_t length); + +static inline long ksys_truncate(const char __user *pathname, loff_t length) +{ + return do_sys_truncate(pathname, length); +} + #endif diff --git a/include/net/compat.h b/include/net/compat.h index a91bea8..4c6d756 100644 --- a/include/net/compat.h +++ b/include/net/compat.h @@ -44,17 +44,6 @@ int compat_sock_get_timestampns(struct sock *, struct timespec __user *); int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *, struct sockaddr __user **, struct iovec **); struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval); -asmlinkage long compat_sys_sendmsg(int, struct compat_msghdr __user *, - unsigned int); -asmlinkage long compat_sys_sendmmsg(int, struct compat_mmsghdr __user *, - unsigned int, unsigned int); -asmlinkage long compat_sys_recvmsg(int, struct compat_msghdr __user *, - unsigned int); -asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *, - unsigned int, unsigned int, - struct compat_timespec __user *); -asmlinkage long compat_sys_getsockopt(int, int, int, char __user *, - int __user *); int put_cmsg_compat(struct msghdr*, int, int, int, void *); int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *, diff --git a/init/do_mounts.c b/init/do_mounts.c index 7cf4f6d..2c71dab 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -363,11 +363,11 @@ static void __init get_fs_names(char *page) static int __init do_mount_root(char *name, char *fs, int flags, void *data) { struct super_block *s; - int err = sys_mount(name, "/root", fs, flags, data); + int err = ksys_mount(name, "/root", fs, flags, data); if (err) return err; - sys_chdir("/root"); + ksys_chdir("/root"); s = current->fs->pwd.dentry->d_sb; ROOT_DEV = s->s_dev; printk(KERN_INFO @@ -489,21 +489,21 @@ void __init change_floppy(char *fmt, ...) va_start(args, fmt); vsprintf(buf, fmt, args); va_end(args); - fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0); + fd = ksys_open("/dev/root", O_RDWR | O_NDELAY, 0); if (fd >= 0) { - sys_ioctl(fd, FDEJECT, 0); - sys_close(fd); + ksys_ioctl(fd, FDEJECT, 0); + ksys_close(fd); } printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf); - fd = sys_open("/dev/console", O_RDWR, 0); + fd = ksys_open("/dev/console", O_RDWR, 0); if (fd >= 0) { - sys_ioctl(fd, TCGETS, (long)&termios); + ksys_ioctl(fd, TCGETS, (long)&termios); termios.c_lflag &= ~ICANON; - sys_ioctl(fd, TCSETSF, (long)&termios); - sys_read(fd, &c, 1); + ksys_ioctl(fd, TCSETSF, (long)&termios); + ksys_read(fd, &c, 1); termios.c_lflag |= ICANON; - sys_ioctl(fd, TCSETSF, (long)&termios); - sys_close(fd); + ksys_ioctl(fd, TCSETSF, (long)&termios); + ksys_close(fd); } } #endif @@ -599,8 +599,8 @@ void __init prepare_namespace(void) mount_root(); out: devtmpfs_mount("dev"); - sys_mount(".", "/", NULL, MS_MOVE, NULL); - sys_chroot("."); + ksys_mount(".", "/", NULL, MS_MOVE, NULL); + ksys_chroot("."); } static bool is_tmpfs; diff --git a/init/do_mounts.h b/init/do_mounts.h index 5b05c8f..0bb0806 100644 --- a/init/do_mounts.h +++ b/init/do_mounts.h @@ -16,8 +16,8 @@ extern int root_mountflags; static inline int create_dev(char *name, dev_t dev) { - sys_unlink(name); - return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); + ksys_unlink(name); + return ksys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); } static inline u32 bstat(char *name) diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index 53d4f0f..5a91aef 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -36,16 +36,16 @@ __setup("noinitrd", no_initrd); static int init_linuxrc(struct subprocess_info *info, struct cred *new) { - sys_unshare(CLONE_FS | CLONE_FILES); + ksys_unshare(CLONE_FS | CLONE_FILES); /* stdin/stdout/stderr for /linuxrc */ - sys_open("/dev/console", O_RDWR, 0); - sys_dup(0); - sys_dup(0); + ksys_open("/dev/console", O_RDWR, 0); + ksys_dup(0); + ksys_dup(0); /* move initrd over / and chdir/chroot in initrd root */ - sys_chdir("/root"); - sys_mount(".", "/", NULL, MS_MOVE, NULL); - sys_chroot("."); - sys_setsid(); + ksys_chdir("/root"); + ksys_mount(".", "/", NULL, MS_MOVE, NULL); + ksys_chroot("."); + ksys_setsid(); return 0; } @@ -60,8 +60,8 @@ static void __init handle_initrd(void) create_dev("/dev/root.old", Root_RAM0); /* mount initrd on rootfs' /root */ mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY); - sys_mkdir("/old", 0700); - sys_chdir("/old"); + ksys_mkdir("/old", 0700); + ksys_chdir("/old"); /* try loading default modules from initrd */ load_default_modules(); @@ -81,37 +81,37 @@ static void __init handle_initrd(void) current->flags &= ~PF_FREEZER_SKIP; /* move initrd to rootfs' /old */ - sys_mount("..", ".", NULL, MS_MOVE, NULL); + ksys_mount("..", ".", NULL, MS_MOVE, NULL); /* switch root and cwd back to / of rootfs */ - sys_chroot(".."); + ksys_chroot(".."); if (new_decode_dev(real_root_dev) == Root_RAM0) { - sys_chdir("/old"); + ksys_chdir("/old"); return; } - sys_chdir("/"); + ksys_chdir("/"); ROOT_DEV = new_decode_dev(real_root_dev); mount_root(); printk(KERN_NOTICE "Trying to move old root to /initrd ... "); - error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL); + error = ksys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL); if (!error) printk("okay\n"); else { - int fd = sys_open("/dev/root.old", O_RDWR, 0); + int fd = ksys_open("/dev/root.old", O_RDWR, 0); if (error == -ENOENT) printk("/initrd does not exist. Ignored.\n"); else printk("failed\n"); printk(KERN_NOTICE "Unmounting old root\n"); - sys_umount("/old", MNT_DETACH); + ksys_umount("/old", MNT_DETACH); printk(KERN_NOTICE "Trying to free ramdisk memory ... "); if (fd < 0) { error = fd; } else { - error = sys_ioctl(fd, BLKFLSBUF, 0); - sys_close(fd); + error = ksys_ioctl(fd, BLKFLSBUF, 0); + ksys_close(fd); } printk(!error ? "okay\n" : "failed\n"); } @@ -128,11 +128,11 @@ bool __init initrd_load(void) * mounted in the normal path. */ if (rd_load_image("/initrd.image") && ROOT_DEV != Root_RAM0) { - sys_unlink("/initrd.image"); + ksys_unlink("/initrd.image"); handle_initrd(); return true; } } - sys_unlink("/initrd.image"); + ksys_unlink("/initrd.image"); return false; } diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c index 3f733c7..7d85d17 100644 --- a/init/do_mounts_md.c +++ b/init/do_mounts_md.c @@ -181,17 +181,17 @@ static void __init md_setup_drive(void) partitioned ? "_d" : "", minor, md_setup_args[ent].device_names); - fd = sys_open(name, 0, 0); + fd = ksys_open(name, 0, 0); if (fd < 0) { printk(KERN_ERR "md: open failed - cannot start " "array %s\n", name); continue; } - if (sys_ioctl(fd, SET_ARRAY_INFO, 0) == -EBUSY) { + if (ksys_ioctl(fd, SET_ARRAY_INFO, 0) == -EBUSY) { printk(KERN_WARNING "md: Ignoring md=%d, already autodetected. (Use raid=noautodetect)\n", minor); - sys_close(fd); + ksys_close(fd); continue; } @@ -210,7 +210,7 @@ static void __init md_setup_drive(void) ainfo.state = (1 << MD_SB_CLEAN); ainfo.layout = 0; ainfo.chunk_size = md_setup_args[ent].chunk; - err = sys_ioctl(fd, SET_ARRAY_INFO, (long)&ainfo); + err = ksys_ioctl(fd, SET_ARRAY_INFO, (long)&ainfo); for (i = 0; !err && i <= MD_SB_DISKS; i++) { dev = devices[i]; if (!dev) @@ -220,7 +220,8 @@ static void __init md_setup_drive(void) dinfo.state = (1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC); dinfo.major = MAJOR(dev); dinfo.minor = MINOR(dev); - err = sys_ioctl(fd, ADD_NEW_DISK, (long)&dinfo); + err = ksys_ioctl(fd, ADD_NEW_DISK, + (long)&dinfo); } } else { /* persistent */ @@ -230,11 +231,11 @@ static void __init md_setup_drive(void) break; dinfo.major = MAJOR(dev); dinfo.minor = MINOR(dev); - sys_ioctl(fd, ADD_NEW_DISK, (long)&dinfo); + ksys_ioctl(fd, ADD_NEW_DISK, (long)&dinfo); } } if (!err) - err = sys_ioctl(fd, RUN_ARRAY, 0); + err = ksys_ioctl(fd, RUN_ARRAY, 0); if (err) printk(KERN_WARNING "md: starting md%d failed\n", minor); else { @@ -243,11 +244,11 @@ static void __init md_setup_drive(void) * boot a kernel with devfs compiled in from partitioned md * array without it */ - sys_close(fd); - fd = sys_open(name, 0, 0); - sys_ioctl(fd, BLKRRPART, 0); + ksys_close(fd); + fd = ksys_open(name, 0, 0); + ksys_ioctl(fd, BLKRRPART, 0); } - sys_close(fd); + ksys_close(fd); } } @@ -294,10 +295,10 @@ static void __init autodetect_raid(void) wait_for_device_probe(); - fd = sys_open("/dev/md0", 0, 0); + fd = ksys_open("/dev/md0", 0, 0); if (fd >= 0) { - sys_ioctl(fd, RAID_AUTORUN, raid_autopart); - sys_close(fd); + ksys_ioctl(fd, RAID_AUTORUN, raid_autopart); + ksys_close(fd); } } diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c index 99e0b64..12c1598 100644 --- a/init/do_mounts_rd.c +++ b/init/do_mounts_rd.c @@ -90,8 +90,8 @@ identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor) /* * Read block 0 to test for compressed kernel */ - sys_lseek(fd, start_block * BLOCK_SIZE, 0); - sys_read(fd, buf, size); + ksys_lseek(fd, start_block * BLOCK_SIZE, 0); + ksys_read(fd, buf, size); *decompressor = decompress_method(buf, size, &compress_name); if (compress_name) { @@ -136,8 +136,8 @@ identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor) /* * Read 512 bytes further to check if cramfs is padded */ - sys_lseek(fd, start_block * BLOCK_SIZE + 0x200, 0); - sys_read(fd, buf, size); + ksys_lseek(fd, start_block * BLOCK_SIZE + 0x200, 0); + ksys_read(fd, buf, size); if (cramfsb->magic == CRAMFS_MAGIC) { printk(KERN_NOTICE @@ -150,8 +150,8 @@ identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor) /* * Read block 1 to test for minix and ext2 superblock */ - sys_lseek(fd, (start_block+1) * BLOCK_SIZE, 0); - sys_read(fd, buf, size); + ksys_lseek(fd, (start_block+1) * BLOCK_SIZE, 0); + ksys_read(fd, buf, size); /* Try minix */ if (minixsb->s_magic == MINIX_SUPER_MAGIC || @@ -178,7 +178,7 @@ identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor) start_block); done: - sys_lseek(fd, start_block * BLOCK_SIZE, 0); + ksys_lseek(fd, start_block * BLOCK_SIZE, 0); kfree(buf); return nblocks; } @@ -196,11 +196,11 @@ int __init rd_load_image(char *from) char rotator[4] = { '|' , '/' , '-' , '\\' }; #endif - out_fd = sys_open("/dev/ram", O_RDWR, 0); + out_fd = ksys_open("/dev/ram", O_RDWR, 0); if (out_fd < 0) goto out; - in_fd = sys_open(from, O_RDONLY, 0); + in_fd = ksys_open(from, O_RDONLY, 0); if (in_fd < 0) goto noclose_input; @@ -218,7 +218,7 @@ int __init rd_load_image(char *from) * NOTE NOTE: nblocks is not actually blocks but * the number of kibibytes of data to load into a ramdisk. */ - if (sys_ioctl(out_fd, BLKGETSIZE, (unsigned long)&rd_blocks) < 0) + if (ksys_ioctl(out_fd, BLKGETSIZE, (unsigned long)&rd_blocks) < 0) rd_blocks = 0; else rd_blocks >>= 1; @@ -232,7 +232,7 @@ int __init rd_load_image(char *from) /* * OK, time to copy in the data */ - if (sys_ioctl(in_fd, BLKGETSIZE, (unsigned long)&devblocks) < 0) + if (ksys_ioctl(in_fd, BLKGETSIZE, (unsigned long)&devblocks) < 0) devblocks = 0; else devblocks >>= 1; @@ -257,20 +257,20 @@ int __init rd_load_image(char *from) if (i && (i % devblocks == 0)) { printk("done disk #%d.\n", disk++); rotate = 0; - if (sys_close(in_fd)) { + if (ksys_close(in_fd)) { printk("Error closing the disk.\n"); goto noclose_input; } change_floppy("disk #%d", disk); - in_fd = sys_open(from, O_RDONLY, 0); + in_fd = ksys_open(from, O_RDONLY, 0); if (in_fd < 0) { printk("Error opening disk.\n"); goto noclose_input; } printk("Loading disk #%d... ", disk); } - sys_read(in_fd, buf, BLOCK_SIZE); - sys_write(out_fd, buf, BLOCK_SIZE); + ksys_read(in_fd, buf, BLOCK_SIZE); + ksys_write(out_fd, buf, BLOCK_SIZE); #if !defined(CONFIG_S390) if (!(i % 16)) { pr_cont("%c\b", rotator[rotate & 0x3]); @@ -283,12 +283,12 @@ int __init rd_load_image(char *from) successful_load: res = 1; done: - sys_close(in_fd); + ksys_close(in_fd); noclose_input: - sys_close(out_fd); + ksys_close(out_fd); out: kfree(buf); - sys_unlink("/dev/ram"); + ksys_unlink("/dev/ram"); return res; } @@ -307,7 +307,7 @@ static int crd_infd, crd_outfd; static long __init compr_fill(void *buf, unsigned long len) { - long r = sys_read(crd_infd, buf, len); + long r = ksys_read(crd_infd, buf, len); if (r < 0) printk(KERN_ERR "RAMDISK: error while reading compressed data"); else if (r == 0) @@ -317,7 +317,7 @@ static long __init compr_fill(void *buf, unsigned long len) static long __init compr_flush(void *window, unsigned long outcnt) { - long written = sys_write(crd_outfd, window, outcnt); + long written = ksys_write(crd_outfd, window, outcnt); if (written != outcnt) { if (decompress_error == 0) printk(KERN_ERR diff --git a/init/initramfs.c b/init/initramfs.c index 7e99a00..13643c4 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -27,7 +27,7 @@ static ssize_t __init xwrite(int fd, const char *p, size_t count) /* sys_write only can write MAX_RW_COUNT aka 2G-4K bytes at most */ while (count) { - ssize_t rv = sys_write(fd, p, count); + ssize_t rv = ksys_write(fd, p, count); if (rv < 0) { if (rv == -EINTR || rv == -EAGAIN) @@ -306,7 +306,7 @@ static int __init maybe_link(void) if (nlink >= 2) { char *old = find_link(major, minor, ino, mode, collected); if (old) - return (sys_link(old, collected) < 0) ? -1 : 1; + return (ksys_link(old, collected) < 0) ? -1 : 1; } return 0; } @@ -317,9 +317,9 @@ static void __init clean_path(char *path, umode_t fmode) if (!vfs_lstat(path, &st) && (st.mode ^ fmode) & S_IFMT) { if (S_ISDIR(st.mode)) - sys_rmdir(path); + ksys_rmdir(path); else - sys_unlink(path); + ksys_unlink(path); } } @@ -340,28 +340,28 @@ static int __init do_name(void) int openflags = O_WRONLY|O_CREAT; if (ml != 1) openflags |= O_TRUNC; - wfd = sys_open(collected, openflags, mode); + wfd = ksys_open(collected, openflags, mode); if (wfd >= 0) { - sys_fchown(wfd, uid, gid); - sys_fchmod(wfd, mode); + ksys_fchown(wfd, uid, gid); + ksys_fchmod(wfd, mode); if (body_len) - sys_ftruncate(wfd, body_len); + ksys_ftruncate(wfd, body_len); vcollected = kstrdup(collected, GFP_KERNEL); state = CopyFile; } } } else if (S_ISDIR(mode)) { - sys_mkdir(collected, mode); - sys_chown(collected, uid, gid); - sys_chmod(collected, mode); + ksys_mkdir(collected, mode); + ksys_chown(collected, uid, gid); + ksys_chmod(collected, mode); dir_add(collected, mtime); } else if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { if (maybe_link() == 0) { - sys_mknod(collected, mode, rdev); - sys_chown(collected, uid, gid); - sys_chmod(collected, mode); + ksys_mknod(collected, mode, rdev); + ksys_chown(collected, uid, gid); + ksys_chmod(collected, mode); do_utime(collected, mtime); } } @@ -373,7 +373,7 @@ static int __init do_copy(void) if (byte_count >= body_len) { if (xwrite(wfd, victim, body_len) != body_len) error("write error"); - sys_close(wfd); + ksys_close(wfd); do_utime(vcollected, mtime); kfree(vcollected); eat(body_len); @@ -392,8 +392,8 @@ static int __init do_symlink(void) { collected[N_ALIGN(name_len) + body_len] = '\0'; clean_path(collected, 0); - sys_symlink(collected + N_ALIGN(name_len), collected); - sys_lchown(collected, uid, gid); + ksys_symlink(collected + N_ALIGN(name_len), collected); + ksys_lchown(collected, uid, gid); do_utime(collected, mtime); state = SkipIt; next_state = Reset; @@ -567,19 +567,19 @@ static void __init clean_rootfs(void) struct linux_dirent64 *dirp; int num; - fd = sys_open("/", O_RDONLY, 0); + fd = ksys_open("/", O_RDONLY, 0); WARN_ON(fd < 0); if (fd < 0) return; buf = kzalloc(BUF_SIZE, GFP_KERNEL); WARN_ON(!buf); if (!buf) { - sys_close(fd); + ksys_close(fd); return; } dirp = buf; - num = sys_getdents64(fd, dirp, BUF_SIZE); + num = ksys_getdents64(fd, dirp, BUF_SIZE); while (num > 0) { while (num > 0) { struct kstat st; @@ -589,9 +589,9 @@ static void __init clean_rootfs(void) WARN_ON_ONCE(ret); if (!ret) { if (S_ISDIR(st.mode)) - sys_rmdir(dirp->d_name); + ksys_rmdir(dirp->d_name); else - sys_unlink(dirp->d_name); + ksys_unlink(dirp->d_name); } num -= dirp->d_reclen; @@ -599,10 +599,10 @@ static void __init clean_rootfs(void) } dirp = buf; memset(buf, 0, BUF_SIZE); - num = sys_getdents64(fd, dirp, BUF_SIZE); + num = ksys_getdents64(fd, dirp, BUF_SIZE); } - sys_close(fd); + ksys_close(fd); kfree(buf); } #endif @@ -629,7 +629,7 @@ static int __init populate_rootfs(void) } printk(KERN_INFO "rootfs image is not initramfs (%s)" "; looks like an initrd\n", err); - fd = sys_open("/initrd.image", + fd = ksys_open("/initrd.image", O_WRONLY|O_CREAT, 0700); if (fd >= 0) { ssize_t written = xwrite(fd, (char *)initrd_start, @@ -639,7 +639,7 @@ static int __init populate_rootfs(void) pr_err("/initrd.image: incomplete write (%zd != %ld)\n", written, initrd_end - initrd_start); - sys_close(fd); + ksys_close(fd); free_initrd(); } done: diff --git a/init/main.c b/init/main.c index 21efbf6..e4a3160 100644 --- a/init/main.c +++ b/init/main.c @@ -1074,11 +1074,11 @@ static noinline void __init kernel_init_freeable(void) do_basic_setup(); /* Open the /dev/console on the rootfs, this should never fail */ - if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) + if (ksys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) pr_err("Warning: unable to open an initial console.\n"); - (void) sys_dup(0); - (void) sys_dup(0); + (void) ksys_dup(0); + (void) ksys_dup(0); /* * check if there is an early userspace init. If yes, let it do all * the work @@ -1087,7 +1087,8 @@ static noinline void __init kernel_init_freeable(void) if (!ramdisk_execute_command) ramdisk_execute_command = "/init"; - if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) { + if (ksys_access((const char __user *) + ramdisk_execute_command, 0) != 0) { ramdisk_execute_command = NULL; prepare_namespace(); } diff --git a/init/noinitramfs.c b/init/noinitramfs.c index 267739d..f4bad84 100644 --- a/init/noinitramfs.c +++ b/init/noinitramfs.c @@ -29,17 +29,17 @@ static int __init default_rootfs(void) { int err; - err = sys_mkdir((const char __user __force *) "/dev", 0755); + err = ksys_mkdir((const char __user __force *) "/dev", 0755); if (err < 0) goto out; - err = sys_mknod((const char __user __force *) "/dev/console", + err = ksys_mknod((const char __user __force *) "/dev/console", S_IFCHR | S_IRUSR | S_IWUSR, new_encode_dev(MKDEV(5, 1))); if (err < 0) goto out; - err = sys_mkdir((const char __user __force *) "/root", 0700); + err = ksys_mkdir((const char __user __force *) "/root", 0700); if (err < 0) goto out; @@ -263,7 +263,7 @@ static inline int msg_security(struct kern_ipc_perm *ipcp, int msgflg) return security_msg_queue_associate(msq, msgflg); } -SYSCALL_DEFINE2(msgget, key_t, key, int, msgflg) +long ksys_msgget(key_t key, int msgflg) { struct ipc_namespace *ns; static const struct ipc_ops msg_ops = { @@ -280,6 +280,11 @@ SYSCALL_DEFINE2(msgget, key_t, key, int, msgflg) return ipcget(ns, &msg_ids(ns), &msg_ops, &msg_params); } +SYSCALL_DEFINE2(msgget, key_t, key, int, msgflg) +{ + return ksys_msgget(key, msgflg); +} + static inline unsigned long copy_msqid_to_user(void __user *buf, struct msqid64_ds *in, int version) { @@ -533,7 +538,7 @@ out_unlock: return err; } -SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, struct msqid_ds __user *, buf) +long ksys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf) { int version; struct ipc_namespace *ns; @@ -576,6 +581,11 @@ SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, struct msqid_ds __user *, buf) } } +SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, struct msqid_ds __user *, buf) +{ + return ksys_msgctl(msqid, cmd, buf); +} + #ifdef CONFIG_COMPAT struct compat_msqid_ds { @@ -646,7 +656,7 @@ static int copy_compat_msqid_to_user(void __user *buf, struct msqid64_ds *in, } } -COMPAT_SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, void __user *, uptr) +long compat_ksys_msgctl(int msqid, int cmd, void __user *uptr) { struct ipc_namespace *ns; int err; @@ -687,6 +697,11 @@ COMPAT_SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, void __user *, uptr) return -EINVAL; } } + +COMPAT_SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, void __user *, uptr) +{ + return compat_ksys_msgctl(msqid, cmd, uptr); +} #endif static int testmsg(struct msg_msg *msg, long type, int mode) @@ -852,8 +867,8 @@ out_unlock1: return err; } -SYSCALL_DEFINE4(msgsnd, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz, - int, msgflg) +long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, + int msgflg) { long mtype; @@ -862,6 +877,12 @@ SYSCALL_DEFINE4(msgsnd, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz, return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg); } +SYSCALL_DEFINE4(msgsnd, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz, + int, msgflg) +{ + return ksys_msgsnd(msqid, msgp, msgsz, msgflg); +} + #ifdef CONFIG_COMPAT struct compat_msgbuf { @@ -869,8 +890,8 @@ struct compat_msgbuf { char mtext[1]; }; -COMPAT_SYSCALL_DEFINE4(msgsnd, int, msqid, compat_uptr_t, msgp, - compat_ssize_t, msgsz, int, msgflg) +long compat_ksys_msgsnd(int msqid, compat_uptr_t msgp, + compat_ssize_t msgsz, int msgflg) { struct compat_msgbuf __user *up = compat_ptr(msgp); compat_long_t mtype; @@ -879,6 +900,12 @@ COMPAT_SYSCALL_DEFINE4(msgsnd, int, msqid, compat_uptr_t, msgp, return -EFAULT; return do_msgsnd(msqid, mtype, up->mtext, (ssize_t)msgsz, msgflg); } + +COMPAT_SYSCALL_DEFINE4(msgsnd, int, msqid, compat_uptr_t, msgp, + compat_ssize_t, msgsz, int, msgflg) +{ + return compat_ksys_msgsnd(msqid, msgp, msgsz, msgflg); +} #endif static inline int convert_mode(long *msgtyp, int msgflg) @@ -1135,10 +1162,16 @@ out_unlock1: return bufsz; } +long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, + long msgtyp, int msgflg) +{ + return do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg, do_msg_fill); +} + SYSCALL_DEFINE5(msgrcv, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz, long, msgtyp, int, msgflg) { - return do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg, do_msg_fill); + return ksys_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); } #ifdef CONFIG_COMPAT @@ -1156,12 +1189,19 @@ static long compat_do_msg_fill(void __user *dest, struct msg_msg *msg, size_t bu return msgsz; } -COMPAT_SYSCALL_DEFINE5(msgrcv, int, msqid, compat_uptr_t, msgp, - compat_ssize_t, msgsz, compat_long_t, msgtyp, int, msgflg) +long compat_ksys_msgrcv(int msqid, compat_uptr_t msgp, compat_ssize_t msgsz, + compat_long_t msgtyp, int msgflg) { return do_msgrcv(msqid, compat_ptr(msgp), (ssize_t)msgsz, (long)msgtyp, msgflg, compat_do_msg_fill); } + +COMPAT_SYSCALL_DEFINE5(msgrcv, int, msqid, compat_uptr_t, msgp, + compat_ssize_t, msgsz, compat_long_t, msgtyp, + int, msgflg) +{ + return compat_ksys_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); +} #endif int msg_init_ns(struct ipc_namespace *ns) @@ -556,7 +556,7 @@ static inline int sem_more_checks(struct kern_ipc_perm *ipcp, return 0; } -SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) +long ksys_semget(key_t key, int nsems, int semflg) { struct ipc_namespace *ns; static const struct ipc_ops sem_ops = { @@ -578,6 +578,11 @@ SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) return ipcget(ns, &sem_ids(ns), &sem_ops, &sem_params); } +SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) +{ + return ksys_semget(key, nsems, semflg); +} + /** * perform_atomic_semop[_slow] - Attempt to perform semaphore * operations on a given array. @@ -1576,7 +1581,7 @@ out_up: return err; } -SYSCALL_DEFINE4(semctl, int, semid, int, semnum, int, cmd, unsigned long, arg) +long ksys_semctl(int semid, int semnum, int cmd, unsigned long arg) { int version; struct ipc_namespace *ns; @@ -1630,6 +1635,11 @@ SYSCALL_DEFINE4(semctl, int, semid, int, semnum, int, cmd, unsigned long, arg) } } +SYSCALL_DEFINE4(semctl, int, semid, int, semnum, int, cmd, unsigned long, arg) +{ + return ksys_semctl(semid, semnum, cmd, arg); +} + #ifdef CONFIG_COMPAT struct compat_semid_ds { @@ -1678,7 +1688,7 @@ static int copy_compat_semid_to_user(void __user *buf, struct semid64_ds *in, } } -COMPAT_SYSCALL_DEFINE4(semctl, int, semid, int, semnum, int, cmd, int, arg) +long compat_ksys_semctl(int semid, int semnum, int cmd, int arg) { void __user *p = compat_ptr(arg); struct ipc_namespace *ns; @@ -1722,6 +1732,11 @@ COMPAT_SYSCALL_DEFINE4(semctl, int, semid, int, semnum, int, cmd, int, arg) return -EINVAL; } } + +COMPAT_SYSCALL_DEFINE4(semctl, int, semid, int, semnum, int, cmd, int, arg) +{ + return compat_ksys_semctl(semid, semnum, cmd, arg); +} #endif /* If the task doesn't already have a undo_list, then allocate one @@ -2120,8 +2135,8 @@ out_free: return error; } -SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, - unsigned, nsops, const struct timespec __user *, timeout) +long ksys_semtimedop(int semid, struct sembuf __user *tsops, + unsigned int nsops, const struct timespec __user *timeout) { if (timeout) { struct timespec64 ts; @@ -2132,10 +2147,16 @@ SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, return do_semtimedop(semid, tsops, nsops, NULL); } +SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, + unsigned int, nsops, const struct timespec __user *, timeout) +{ + return ksys_semtimedop(semid, tsops, nsops, timeout); +} + #ifdef CONFIG_COMPAT -COMPAT_SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsems, - unsigned, nsops, - const struct compat_timespec __user *, timeout) +long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, + unsigned int nsops, + const struct compat_timespec __user *timeout) { if (timeout) { struct timespec64 ts; @@ -2145,6 +2166,13 @@ COMPAT_SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsems, } return do_semtimedop(semid, tsems, nsops, NULL); } + +COMPAT_SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsems, + unsigned int, nsops, + const struct compat_timespec __user *, timeout) +{ + return compat_ksys_semtimedop(semid, tsems, nsops, timeout); +} #endif SYSCALL_DEFINE3(semop, int, semid, struct sembuf __user *, tsops, @@ -668,7 +668,7 @@ static inline int shm_more_checks(struct kern_ipc_perm *ipcp, return 0; } -SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) +long ksys_shmget(key_t key, size_t size, int shmflg) { struct ipc_namespace *ns; static const struct ipc_ops shm_ops = { @@ -687,6 +687,11 @@ SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) return ipcget(ns, &shm_ids(ns), &shm_ops, &shm_params); } +SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) +{ + return ksys_shmget(key, size, shmflg); +} + static inline unsigned long copy_shmid_to_user(void __user *buf, struct shmid64_ds *in, int version) { switch (version) { @@ -1052,7 +1057,7 @@ out_unlock1: return err; } -SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf) +long ksys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf) { int err, version; struct ipc_namespace *ns; @@ -1106,6 +1111,11 @@ SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf) } } +SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf) +{ + return ksys_shmctl(shmid, cmd, buf); +} + #ifdef CONFIG_COMPAT struct compat_shmid_ds { @@ -1225,7 +1235,7 @@ static int copy_compat_shmid_from_user(struct shmid64_ds *out, void __user *buf, } } -COMPAT_SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, void __user *, uptr) +long compat_ksys_shmctl(int shmid, int cmd, void __user *uptr) { struct ipc_namespace *ns; struct shmid64_ds sem64; @@ -1280,6 +1290,11 @@ COMPAT_SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, void __user *, uptr) } return err; } + +COMPAT_SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, void __user *, uptr) +{ + return compat_ksys_shmctl(shmid, cmd, uptr); +} #endif /* @@ -1488,7 +1503,7 @@ COMPAT_SYSCALL_DEFINE3(shmat, int, shmid, compat_uptr_t, shmaddr, int, shmflg) * detach and kill segment if marked destroyed. * The work is done in shm_close. */ -SYSCALL_DEFINE1(shmdt, char __user *, shmaddr) +long ksys_shmdt(char __user *shmaddr) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; @@ -1595,6 +1610,11 @@ SYSCALL_DEFINE1(shmdt, char __user *, shmaddr) return retval; } +SYSCALL_DEFINE1(shmdt, char __user *, shmaddr) +{ + return ksys_shmdt(shmaddr); +} + #ifdef CONFIG_PROC_FS static int sysvipc_shm_proc_show(struct seq_file *s, void *it) { diff --git a/ipc/syscall.c b/ipc/syscall.c index 3763b42..77a883e 100644 --- a/ipc/syscall.c +++ b/ipc/syscall.c @@ -7,6 +7,9 @@ */ #include <linux/unistd.h> #include <linux/syscalls.h> +#include <linux/security.h> +#include <linux/ipc_namespace.h> +#include "util.h" #ifdef __ARCH_WANT_SYS_IPC #include <linux/errno.h> @@ -24,26 +27,26 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second, switch (call) { case SEMOP: - return sys_semtimedop(first, (struct sembuf __user *)ptr, - second, NULL); + return ksys_semtimedop(first, (struct sembuf __user *)ptr, + second, NULL); case SEMTIMEDOP: - return sys_semtimedop(first, (struct sembuf __user *)ptr, - second, - (const struct timespec __user *)fifth); + return ksys_semtimedop(first, (struct sembuf __user *)ptr, + second, + (const struct timespec __user *)fifth); case SEMGET: - return sys_semget(first, second, third); + return ksys_semget(first, second, third); case SEMCTL: { unsigned long arg; if (!ptr) return -EINVAL; if (get_user(arg, (unsigned long __user *) ptr)) return -EFAULT; - return sys_semctl(first, second, third, arg); + return ksys_semctl(first, second, third, arg); } case MSGSND: - return sys_msgsnd(first, (struct msgbuf __user *) ptr, + return ksys_msgsnd(first, (struct msgbuf __user *) ptr, second, third); case MSGRCV: switch (version) { @@ -56,18 +59,19 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second, (struct ipc_kludge __user *) ptr, sizeof(tmp))) return -EFAULT; - return sys_msgrcv(first, tmp.msgp, second, + return ksys_msgrcv(first, tmp.msgp, second, tmp.msgtyp, third); } default: - return sys_msgrcv(first, + return ksys_msgrcv(first, (struct msgbuf __user *) ptr, second, fifth, third); } case MSGGET: - return sys_msgget((key_t) first, second); + return ksys_msgget((key_t) first, second); case MSGCTL: - return sys_msgctl(first, second, (struct msqid_ds __user *)ptr); + return ksys_msgctl(first, second, + (struct msqid_ds __user *)ptr); case SHMAT: switch (version) { @@ -87,11 +91,11 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second, return -EINVAL; } case SHMDT: - return sys_shmdt((char __user *)ptr); + return ksys_shmdt((char __user *)ptr); case SHMGET: - return sys_shmget(first, second, third); + return ksys_shmget(first, second, third); case SHMCTL: - return sys_shmctl(first, second, + return ksys_shmctl(first, second, (struct shmid_ds __user *) ptr); default: return -ENOSYS; @@ -124,21 +128,21 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second, switch (call) { case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ - return sys_semtimedop(first, compat_ptr(ptr), second, NULL); + return ksys_semtimedop(first, compat_ptr(ptr), second, NULL); case SEMTIMEDOP: - return compat_sys_semtimedop(first, compat_ptr(ptr), second, + return compat_ksys_semtimedop(first, compat_ptr(ptr), second, compat_ptr(fifth)); case SEMGET: - return sys_semget(first, second, third); + return ksys_semget(first, second, third); case SEMCTL: if (!ptr) return -EINVAL; if (get_user(pad, (u32 __user *) compat_ptr(ptr))) return -EFAULT; - return compat_sys_semctl(first, second, third, pad); + return compat_ksys_semctl(first, second, third, pad); case MSGSND: - return compat_sys_msgsnd(first, ptr, second, third); + return compat_ksys_msgsnd(first, ptr, second, third); case MSGRCV: { void __user *uptr = compat_ptr(ptr); @@ -152,15 +156,15 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second, return -EINVAL; if (copy_from_user(&ipck, uptr, sizeof(ipck))) return -EFAULT; - return compat_sys_msgrcv(first, ipck.msgp, second, + return compat_ksys_msgrcv(first, ipck.msgp, second, ipck.msgtyp, third); } - return compat_sys_msgrcv(first, ptr, second, fifth, third); + return compat_ksys_msgrcv(first, ptr, second, fifth, third); } case MSGGET: - return sys_msgget(first, second); + return ksys_msgget(first, second); case MSGCTL: - return compat_sys_msgctl(first, second, compat_ptr(ptr)); + return compat_ksys_msgctl(first, second, compat_ptr(ptr)); case SHMAT: { int err; @@ -175,11 +179,11 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second, return put_user(raddr, (compat_ulong_t __user *)compat_ptr(third)); } case SHMDT: - return sys_shmdt(compat_ptr(ptr)); + return ksys_shmdt(compat_ptr(ptr)); case SHMGET: - return sys_shmget(first, (unsigned)second, third); + return ksys_shmget(first, (unsigned int)second, third); case SHMCTL: - return compat_sys_shmctl(first, second, compat_ptr(ptr)); + return compat_ksys_shmctl(first, second, compat_ptr(ptr)); } return -ENOSYS; @@ -235,4 +235,35 @@ static inline int compat_ipc_parse_version(int *cmd) #endif } #endif + +/* for __ARCH_WANT_SYS_IPC */ +long ksys_semtimedop(int semid, struct sembuf __user *tsops, + unsigned int nsops, + const struct timespec __user *timeout); +long ksys_semget(key_t key, int nsems, int semflg); +long ksys_semctl(int semid, int semnum, int cmd, unsigned long arg); +long ksys_msgget(key_t key, int msgflg); +long ksys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); +long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, + long msgtyp, int msgflg); +long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, + int msgflg); +long ksys_shmget(key_t key, size_t size, int shmflg); +long ksys_shmdt(char __user *shmaddr); +long ksys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); + +/* for CONFIG_ARCH_WANT_OLD_COMPAT_IPC */ +#ifdef CONFIG_COMPAT +long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, + unsigned int nsops, + const struct compat_timespec __user *timeout); +long compat_ksys_semctl(int semid, int semnum, int cmd, int arg); +long compat_ksys_msgctl(int msqid, int cmd, void __user *uptr); +long compat_ksys_msgrcv(int msqid, compat_uptr_t msgp, compat_ssize_t msgsz, + compat_long_t msgtyp, int msgflg); +long compat_ksys_msgsnd(int msqid, compat_uptr_t msgp, + compat_ssize_t msgsz, int msgflg); +long compat_ksys_shmctl(int shmid, int cmd, void __user *uptr); +#endif /* CONFIG_COMPAT */ + #endif diff --git a/kernel/compat.c b/kernel/compat.c index 3f5fa89..6d21894 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -488,61 +488,6 @@ get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat) } EXPORT_SYMBOL_GPL(get_compat_sigset); -#ifdef CONFIG_NUMA -COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages, - compat_uptr_t __user *, pages32, - const int __user *, nodes, - int __user *, status, - int, flags) -{ - const void __user * __user *pages; - int i; - - pages = compat_alloc_user_space(nr_pages * sizeof(void *)); - for (i = 0; i < nr_pages; i++) { - compat_uptr_t p; - - if (get_user(p, pages32 + i) || - put_user(compat_ptr(p), pages + i)) - return -EFAULT; - } - return sys_move_pages(pid, nr_pages, pages, nodes, status, flags); -} - -COMPAT_SYSCALL_DEFINE4(migrate_pages, compat_pid_t, pid, - compat_ulong_t, maxnode, - const compat_ulong_t __user *, old_nodes, - const compat_ulong_t __user *, new_nodes) -{ - unsigned long __user *old = NULL; - unsigned long __user *new = NULL; - nodemask_t tmp_mask; - unsigned long nr_bits; - unsigned long size; - - nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES); - size = ALIGN(nr_bits, BITS_PER_LONG) / 8; - if (old_nodes) { - if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits)) - return -EFAULT; - old = compat_alloc_user_space(new_nodes ? size * 2 : size); - if (new_nodes) - new = old + size / sizeof(unsigned long); - if (copy_to_user(old, nodes_addr(tmp_mask), size)) - return -EFAULT; - } - if (new_nodes) { - if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits)) - return -EFAULT; - if (new == NULL) - new = compat_alloc_user_space(size); - if (copy_to_user(new, nodes_addr(tmp_mask), size)) - return -EFAULT; - } - return sys_migrate_pages(pid, nr_bits + 1, old, new); -} -#endif - /* * Allocate user-space memory for the duration of a single system call, * in order to marshall parameters inside a compat thunk. diff --git a/kernel/exit.c b/kernel/exit.c index 995453d..c3c7ac5 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1691,7 +1691,7 @@ SYSCALL_DEFINE4(wait4, pid_t, upid, int __user *, stat_addr, */ SYSCALL_DEFINE3(waitpid, pid_t, pid, int __user *, stat_addr, int, options) { - return sys_wait4(pid, stat_addr, options, NULL); + return kernel_wait4(pid, stat_addr, options, NULL); } #endif diff --git a/kernel/fork.c b/kernel/fork.c index e5d9d40..f71b67d 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1198,8 +1198,8 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm) * not set up a proper pointer then tough luck. */ put_user(0, tsk->clear_child_tid); - sys_futex(tsk->clear_child_tid, FUTEX_WAKE, - 1, NULL, NULL, 0); + do_futex(tsk->clear_child_tid, FUTEX_WAKE, + 1, NULL, NULL, 0, 0); } tsk->clear_child_tid = NULL; } @@ -2354,7 +2354,7 @@ static int unshare_fd(unsigned long unshare_flags, struct files_struct **new_fdp * constructed. Here we are modifying the current, active, * task_struct. */ -SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags) +int ksys_unshare(unsigned long unshare_flags) { struct fs_struct *fs, *new_fs = NULL; struct files_struct *fd, *new_fd = NULL; @@ -2470,6 +2470,11 @@ bad_unshare_out: return err; } +SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags) +{ + return ksys_unshare(unshare_flags); +} + /* * Helper to unshare the files of the current task. * We don't want to expose copy_files internals to diff --git a/kernel/kexec.c b/kernel/kexec.c index e62ec4d..aed8fb2 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -192,11 +192,9 @@ out: * that to happen you need to do that yourself. */ -SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments, - struct kexec_segment __user *, segments, unsigned long, flags) +static inline int kexec_load_check(unsigned long nr_segments, + unsigned long flags) { - int result; - /* We only trust the superuser with rebooting the system. */ if (!capable(CAP_SYS_BOOT) || kexec_load_disabled) return -EPERM; @@ -208,17 +206,29 @@ SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments, if ((flags & KEXEC_FLAGS) != (flags & ~KEXEC_ARCH_MASK)) return -EINVAL; - /* Verify we are on the appropriate architecture */ - if (((flags & KEXEC_ARCH_MASK) != KEXEC_ARCH) && - ((flags & KEXEC_ARCH_MASK) != KEXEC_ARCH_DEFAULT)) - return -EINVAL; - /* Put an artificial cap on the number * of segments passed to kexec_load. */ if (nr_segments > KEXEC_SEGMENT_MAX) return -EINVAL; + return 0; +} + +SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments, + struct kexec_segment __user *, segments, unsigned long, flags) +{ + int result; + + result = kexec_load_check(nr_segments, flags); + if (result) + return result; + + /* Verify we are on the appropriate architecture */ + if (((flags & KEXEC_ARCH_MASK) != KEXEC_ARCH) && + ((flags & KEXEC_ARCH_MASK) != KEXEC_ARCH_DEFAULT)) + return -EINVAL; + /* Because we write directly to the reserved memory * region when loading crash kernels we need a mutex here to * prevent multiple crash kernels from attempting to load @@ -247,15 +257,16 @@ COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry, struct kexec_segment out, __user *ksegments; unsigned long i, result; + result = kexec_load_check(nr_segments, flags); + if (result) + return result; + /* Don't allow clients that don't understand the native * architecture to do anything. */ if ((flags & KEXEC_ARCH_MASK) == KEXEC_ARCH_DEFAULT) return -EINVAL; - if (nr_segments > KEXEC_SEGMENT_MAX) - return -EINVAL; - ksegments = compat_alloc_user_space(nr_segments * sizeof(out)); for (i = 0; i < nr_segments; i++) { result = copy_from_user(&in, &segments[i], sizeof(in)); @@ -272,6 +283,21 @@ COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry, return -EFAULT; } - return sys_kexec_load(entry, nr_segments, ksegments, flags); + /* Because we write directly to the reserved memory + * region when loading crash kernels we need a mutex here to + * prevent multiple crash kernels from attempting to load + * simultaneously, and to prevent a crash kernel from loading + * over the top of a in use crash kernel. + * + * KISS: always take the mutex. + */ + if (!mutex_trylock(&kexec_mutex)) + return -EBUSY; + + result = do_kexec_load(entry, nr_segments, ksegments, flags); + + mutex_unlock(&kexec_mutex); + + return result; } #endif diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 0b53eef..93b57f0 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -242,16 +242,16 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns) /* * Reap the EXIT_ZOMBIE children we had before we ignored SIGCHLD. - * sys_wait4() will also block until our children traced from the + * kernel_wait4() will also block until our children traced from the * parent namespace are detached and become EXIT_DEAD. */ do { clear_thread_flag(TIF_SIGPENDING); - rc = sys_wait4(-1, NULL, __WALL, NULL); + rc = kernel_wait4(-1, NULL, __WALL, NULL); } while (rc != -ECHILD); /* - * sys_wait4() above can't reap the EXIT_DEAD children but we do not + * kernel_wait4() above can't reap the EXIT_DEAD children but we do not * really care, we could reparent them to the global init. We could * exit and reap ->child_reaper even if it is not the last thread in * this pid_ns, free_pid(pid_allocated == 0) calls proc_cleanup_work(), diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index a5c36e9..4710f1b 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -701,7 +701,7 @@ int hibernate(void) } pr_info("Syncing filesystems ... \n"); - sys_sync(); + ksys_sync(); pr_info("done.\n"); error = freeze_processes(); diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 0685c44..4c10be0 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -560,7 +560,7 @@ static int enter_state(suspend_state_t state) #ifndef CONFIG_SUSPEND_SKIP_SYNC trace_suspend_resume(TPS("sync_filesystems"), 0, true); pr_info("Syncing filesystems ... "); - sys_sync(); + ksys_sync(); pr_cont("done.\n"); trace_suspend_resume(TPS("sync_filesystems"), 0, false); #endif diff --git a/kernel/power/user.c b/kernel/power/user.c index 22df9f7..75c959d 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -224,7 +224,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, break; printk("Syncing filesystems ... "); - sys_sync(); + ksys_sync(); printk("done.\n"); error = freeze_processes(); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index de44045..28b6899 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4942,7 +4942,7 @@ SYSCALL_DEFINE3(sched_getaffinity, pid_t, pid, unsigned int, len, * * Return: 0. */ -SYSCALL_DEFINE0(sched_yield) +static void do_sched_yield(void) { struct rq_flags rf; struct rq *rq; @@ -4963,7 +4963,11 @@ SYSCALL_DEFINE0(sched_yield) sched_preempt_enable_no_resched(); schedule(); +} +SYSCALL_DEFINE0(sched_yield) +{ + do_sched_yield(); return 0; } @@ -5047,7 +5051,7 @@ EXPORT_SYMBOL(__cond_resched_softirq); void __sched yield(void) { set_current_state(TASK_RUNNING); - sys_sched_yield(); + do_sched_yield(); } EXPORT_SYMBOL(yield); diff --git a/kernel/signal.c b/kernel/signal.c index c6e4c83..f044666 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3573,9 +3573,8 @@ int __save_altstack(stack_t __user *uss, unsigned long sp) } #ifdef CONFIG_COMPAT -COMPAT_SYSCALL_DEFINE2(sigaltstack, - const compat_stack_t __user *, uss_ptr, - compat_stack_t __user *, uoss_ptr) +static int do_compat_sigaltstack(const compat_stack_t __user *uss_ptr, + compat_stack_t __user *uoss_ptr) { stack_t uss, uoss; int ret; @@ -3602,9 +3601,16 @@ COMPAT_SYSCALL_DEFINE2(sigaltstack, return ret; } +COMPAT_SYSCALL_DEFINE2(sigaltstack, + const compat_stack_t __user *, uss_ptr, + compat_stack_t __user *, uoss_ptr) +{ + return do_compat_sigaltstack(uss_ptr, uoss_ptr); +} + int compat_restore_altstack(const compat_stack_t __user *uss) { - int err = compat_sys_sigaltstack(uss, NULL); + int err = do_compat_sigaltstack(uss, NULL); /* squash all but -EFAULT for now */ return err == -EFAULT ? err : 0; } @@ -3629,11 +3635,20 @@ int __compat_save_altstack(compat_stack_t __user *uss, unsigned long sp) /** * sys_sigpending - examine pending signals - * @set: where mask of pending signal is returned + * @uset: where mask of pending signal is returned */ -SYSCALL_DEFINE1(sigpending, old_sigset_t __user *, set) +SYSCALL_DEFINE1(sigpending, old_sigset_t __user *, uset) { - return sys_rt_sigpending((sigset_t __user *)set, sizeof(old_sigset_t)); + sigset_t set; + int err; + + if (sizeof(old_sigset_t) > sizeof(*uset)) + return -EINVAL; + + err = do_sigpending(&set); + if (!err && copy_to_user(uset, &set, sizeof(old_sigset_t))) + err = -EFAULT; + return err; } #ifdef CONFIG_COMPAT diff --git a/kernel/sys.c b/kernel/sys.c index f2289de..ad69218 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -69,6 +69,8 @@ #include <asm/io.h> #include <asm/unistd.h> +#include "uid16.h" + #ifndef SET_UNALIGN_CTL # define SET_UNALIGN_CTL(a, b) (-EINVAL) #endif @@ -340,7 +342,7 @@ out_unlock: * operations (as far as semantic preservation is concerned). */ #ifdef CONFIG_MULTIUSER -SYSCALL_DEFINE2(setregid, gid_t, rgid, gid_t, egid) +long __sys_setregid(gid_t rgid, gid_t egid) { struct user_namespace *ns = current_user_ns(); const struct cred *old; @@ -392,12 +394,17 @@ error: return retval; } +SYSCALL_DEFINE2(setregid, gid_t, rgid, gid_t, egid) +{ + return __sys_setregid(rgid, egid); +} + /* * setgid() is implemented like SysV w/ SAVED_IDS * * SMP: Same implicit races as above. */ -SYSCALL_DEFINE1(setgid, gid_t, gid) +long __sys_setgid(gid_t gid) { struct user_namespace *ns = current_user_ns(); const struct cred *old; @@ -429,6 +436,11 @@ error: return retval; } +SYSCALL_DEFINE1(setgid, gid_t, gid) +{ + return __sys_setgid(gid); +} + /* * change the user struct in a credentials set to match the new UID */ @@ -473,7 +485,7 @@ static int set_user(struct cred *new) * 100% compatible with BSD. A program which uses just setuid() will be * 100% compatible with POSIX with saved IDs. */ -SYSCALL_DEFINE2(setreuid, uid_t, ruid, uid_t, euid) +long __sys_setreuid(uid_t ruid, uid_t euid) { struct user_namespace *ns = current_user_ns(); const struct cred *old; @@ -533,6 +545,11 @@ error: return retval; } +SYSCALL_DEFINE2(setreuid, uid_t, ruid, uid_t, euid) +{ + return __sys_setreuid(ruid, euid); +} + /* * setuid() is implemented like SysV with SAVED_IDS * @@ -544,7 +561,7 @@ error: * will allow a root program to temporarily drop privileges and be able to * regain them by swapping the real and effective uid. */ -SYSCALL_DEFINE1(setuid, uid_t, uid) +long __sys_setuid(uid_t uid) { struct user_namespace *ns = current_user_ns(); const struct cred *old; @@ -586,12 +603,17 @@ error: return retval; } +SYSCALL_DEFINE1(setuid, uid_t, uid) +{ + return __sys_setuid(uid); +} + /* * This function implements a generic ability to update ruid, euid, * and suid. This allows you to implement the 4.4 compatible seteuid(). */ -SYSCALL_DEFINE3(setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) +long __sys_setresuid(uid_t ruid, uid_t euid, uid_t suid) { struct user_namespace *ns = current_user_ns(); const struct cred *old; @@ -656,6 +678,11 @@ error: return retval; } +SYSCALL_DEFINE3(setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) +{ + return __sys_setresuid(ruid, euid, suid); +} + SYSCALL_DEFINE3(getresuid, uid_t __user *, ruidp, uid_t __user *, euidp, uid_t __user *, suidp) { const struct cred *cred = current_cred(); @@ -678,7 +705,7 @@ SYSCALL_DEFINE3(getresuid, uid_t __user *, ruidp, uid_t __user *, euidp, uid_t _ /* * Same as above, but for rgid, egid, sgid. */ -SYSCALL_DEFINE3(setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) +long __sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid) { struct user_namespace *ns = current_user_ns(); const struct cred *old; @@ -730,6 +757,11 @@ error: return retval; } +SYSCALL_DEFINE3(setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) +{ + return __sys_setresgid(rgid, egid, sgid); +} + SYSCALL_DEFINE3(getresgid, gid_t __user *, rgidp, gid_t __user *, egidp, gid_t __user *, sgidp) { const struct cred *cred = current_cred(); @@ -757,7 +789,7 @@ SYSCALL_DEFINE3(getresgid, gid_t __user *, rgidp, gid_t __user *, egidp, gid_t _ * whatever uid it wants to). It normally shadows "euid", except when * explicitly set by setfsuid() or for access.. */ -SYSCALL_DEFINE1(setfsuid, uid_t, uid) +long __sys_setfsuid(uid_t uid) { const struct cred *old; struct cred *new; @@ -793,10 +825,15 @@ change_okay: return old_fsuid; } +SYSCALL_DEFINE1(setfsuid, uid_t, uid) +{ + return __sys_setfsuid(uid); +} + /* * Samma pÃ¥ svenska.. */ -SYSCALL_DEFINE1(setfsgid, gid_t, gid) +long __sys_setfsgid(gid_t gid) { const struct cred *old; struct cred *new; @@ -830,6 +867,11 @@ change_okay: commit_creds(new); return old_fsgid; } + +SYSCALL_DEFINE1(setfsgid, gid_t, gid) +{ + return __sys_setfsgid(gid); +} #endif /* CONFIG_MULTIUSER */ /** @@ -1027,7 +1069,7 @@ out: return err; } -SYSCALL_DEFINE1(getpgid, pid_t, pid) +static int do_getpgid(pid_t pid) { struct task_struct *p; struct pid *grp; @@ -1055,11 +1097,16 @@ out: return retval; } +SYSCALL_DEFINE1(getpgid, pid_t, pid) +{ + return do_getpgid(pid); +} + #ifdef __ARCH_WANT_SYS_GETPGRP SYSCALL_DEFINE0(getpgrp) { - return sys_getpgid(0); + return do_getpgid(0); } #endif @@ -1103,7 +1150,7 @@ static void set_special_pids(struct pid *pid) change_pid(curr, PIDTYPE_PGID, pid); } -SYSCALL_DEFINE0(setsid) +int ksys_setsid(void) { struct task_struct *group_leader = current->group_leader; struct pid *sid = task_pid(group_leader); @@ -1136,6 +1183,11 @@ out: return err; } +SYSCALL_DEFINE0(setsid) +{ + return ksys_setsid(); +} + DECLARE_RWSEM(uts_sem); #ifdef COMPAT_UTS_MACHINE diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index b518976..6cafc00 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -17,245 +17,406 @@ asmlinkage long sys_ni_syscall(void) return -ENOSYS; } -cond_syscall(sys_quotactl); -cond_syscall(sys32_quotactl); -cond_syscall(sys_acct); -cond_syscall(sys_lookup_dcookie); -cond_syscall(compat_sys_lookup_dcookie); -cond_syscall(sys_swapon); -cond_syscall(sys_swapoff); -cond_syscall(sys_kexec_load); -cond_syscall(compat_sys_kexec_load); -cond_syscall(sys_kexec_file_load); -cond_syscall(sys_init_module); -cond_syscall(sys_finit_module); -cond_syscall(sys_delete_module); -cond_syscall(sys_socketpair); -cond_syscall(sys_bind); -cond_syscall(sys_listen); -cond_syscall(sys_accept); -cond_syscall(sys_accept4); -cond_syscall(sys_connect); -cond_syscall(sys_getsockname); -cond_syscall(sys_getpeername); -cond_syscall(sys_sendto); -cond_syscall(sys_send); -cond_syscall(sys_recvfrom); -cond_syscall(sys_recv); -cond_syscall(sys_socket); -cond_syscall(sys_setsockopt); -cond_syscall(compat_sys_setsockopt); -cond_syscall(sys_getsockopt); -cond_syscall(compat_sys_getsockopt); -cond_syscall(sys_shutdown); -cond_syscall(sys_sendmsg); -cond_syscall(sys_sendmmsg); -cond_syscall(compat_sys_sendmsg); -cond_syscall(compat_sys_sendmmsg); -cond_syscall(sys_recvmsg); -cond_syscall(sys_recvmmsg); -cond_syscall(compat_sys_recvmsg); -cond_syscall(compat_sys_recv); -cond_syscall(compat_sys_recvfrom); -cond_syscall(compat_sys_recvmmsg); -cond_syscall(sys_socketcall); -cond_syscall(sys_futex); -cond_syscall(compat_sys_futex); -cond_syscall(sys_set_robust_list); -cond_syscall(compat_sys_set_robust_list); -cond_syscall(sys_get_robust_list); -cond_syscall(compat_sys_get_robust_list); -cond_syscall(sys_epoll_create); -cond_syscall(sys_epoll_create1); -cond_syscall(sys_epoll_ctl); -cond_syscall(sys_epoll_wait); -cond_syscall(sys_epoll_pwait); -cond_syscall(compat_sys_epoll_pwait); -cond_syscall(sys_semget); -cond_syscall(sys_semop); -cond_syscall(sys_semtimedop); -cond_syscall(compat_sys_semtimedop); -cond_syscall(sys_semctl); -cond_syscall(compat_sys_semctl); -cond_syscall(sys_msgget); -cond_syscall(sys_msgsnd); -cond_syscall(compat_sys_msgsnd); -cond_syscall(sys_msgrcv); -cond_syscall(compat_sys_msgrcv); -cond_syscall(sys_msgctl); -cond_syscall(compat_sys_msgctl); -cond_syscall(sys_shmget); -cond_syscall(sys_shmat); -cond_syscall(compat_sys_shmat); -cond_syscall(sys_shmdt); -cond_syscall(sys_shmctl); -cond_syscall(compat_sys_shmctl); -cond_syscall(sys_mq_open); -cond_syscall(sys_mq_unlink); -cond_syscall(sys_mq_timedsend); -cond_syscall(sys_mq_timedreceive); -cond_syscall(sys_mq_notify); -cond_syscall(sys_mq_getsetattr); -cond_syscall(compat_sys_mq_open); -cond_syscall(compat_sys_mq_timedsend); -cond_syscall(compat_sys_mq_timedreceive); -cond_syscall(compat_sys_mq_notify); -cond_syscall(compat_sys_mq_getsetattr); -cond_syscall(sys_mbind); -cond_syscall(sys_get_mempolicy); -cond_syscall(sys_set_mempolicy); -cond_syscall(compat_sys_mbind); -cond_syscall(compat_sys_get_mempolicy); -cond_syscall(compat_sys_set_mempolicy); -cond_syscall(sys_add_key); -cond_syscall(sys_request_key); -cond_syscall(sys_keyctl); -cond_syscall(compat_sys_keyctl); -cond_syscall(compat_sys_socketcall); -cond_syscall(sys_inotify_init); -cond_syscall(sys_inotify_init1); -cond_syscall(sys_inotify_add_watch); -cond_syscall(sys_inotify_rm_watch); -cond_syscall(sys_migrate_pages); -cond_syscall(sys_move_pages); -cond_syscall(sys_chown16); -cond_syscall(sys_fchown16); -cond_syscall(sys_getegid16); -cond_syscall(sys_geteuid16); -cond_syscall(sys_getgid16); -cond_syscall(sys_getgroups16); -cond_syscall(sys_getresgid16); -cond_syscall(sys_getresuid16); -cond_syscall(sys_getuid16); -cond_syscall(sys_lchown16); -cond_syscall(sys_setfsgid16); -cond_syscall(sys_setfsuid16); -cond_syscall(sys_setgid16); -cond_syscall(sys_setgroups16); -cond_syscall(sys_setregid16); -cond_syscall(sys_setresgid16); -cond_syscall(sys_setresuid16); -cond_syscall(sys_setreuid16); -cond_syscall(sys_setuid16); -cond_syscall(sys_sgetmask); -cond_syscall(sys_ssetmask); -cond_syscall(sys_vm86old); -cond_syscall(sys_vm86); -cond_syscall(sys_modify_ldt); -cond_syscall(sys_ipc); -cond_syscall(compat_sys_ipc); -cond_syscall(compat_sys_sysctl); -cond_syscall(sys_flock); -cond_syscall(sys_io_setup); -cond_syscall(sys_io_destroy); -cond_syscall(sys_io_submit); -cond_syscall(sys_io_cancel); -cond_syscall(sys_io_getevents); -cond_syscall(compat_sys_io_setup); -cond_syscall(compat_sys_io_submit); -cond_syscall(compat_sys_io_getevents); -cond_syscall(sys_sysfs); -cond_syscall(sys_syslog); -cond_syscall(sys_process_vm_readv); -cond_syscall(sys_process_vm_writev); -cond_syscall(compat_sys_process_vm_readv); -cond_syscall(compat_sys_process_vm_writev); -cond_syscall(sys_uselib); -cond_syscall(sys_fadvise64); -cond_syscall(sys_fadvise64_64); -cond_syscall(sys_madvise); -cond_syscall(sys_setuid); -cond_syscall(sys_setregid); -cond_syscall(sys_setgid); -cond_syscall(sys_setreuid); -cond_syscall(sys_setresuid); -cond_syscall(sys_getresuid); -cond_syscall(sys_setresgid); -cond_syscall(sys_getresgid); -cond_syscall(sys_setgroups); -cond_syscall(sys_getgroups); -cond_syscall(sys_setfsuid); -cond_syscall(sys_setfsgid); -cond_syscall(sys_capget); -cond_syscall(sys_capset); -cond_syscall(sys_copy_file_range); - -/* arch-specific weak syscall entries */ -cond_syscall(sys_pciconfig_read); -cond_syscall(sys_pciconfig_write); -cond_syscall(sys_pciconfig_iobase); -cond_syscall(compat_sys_s390_ipc); -cond_syscall(ppc_rtas); -cond_syscall(sys_spu_run); -cond_syscall(sys_spu_create); -cond_syscall(sys_subpage_prot); -cond_syscall(sys_s390_pci_mmio_read); -cond_syscall(sys_s390_pci_mmio_write); - -/* mmu depending weak syscall entries */ -cond_syscall(sys_mprotect); -cond_syscall(sys_msync); -cond_syscall(sys_mlock); -cond_syscall(sys_munlock); -cond_syscall(sys_mlockall); -cond_syscall(sys_munlockall); -cond_syscall(sys_mlock2); -cond_syscall(sys_mincore); -cond_syscall(sys_madvise); -cond_syscall(sys_mremap); -cond_syscall(sys_remap_file_pages); -cond_syscall(compat_sys_move_pages); -cond_syscall(compat_sys_migrate_pages); - -/* block-layer dependent */ -cond_syscall(sys_bdflush); -cond_syscall(sys_ioprio_set); -cond_syscall(sys_ioprio_get); - -/* New file descriptors */ -cond_syscall(sys_signalfd); -cond_syscall(sys_signalfd4); -cond_syscall(compat_sys_signalfd); -cond_syscall(compat_sys_signalfd4); -cond_syscall(sys_timerfd_create); -cond_syscall(sys_timerfd_settime); -cond_syscall(sys_timerfd_gettime); -cond_syscall(compat_sys_timerfd_settime); -cond_syscall(compat_sys_timerfd_gettime); -cond_syscall(sys_eventfd); -cond_syscall(sys_eventfd2); -cond_syscall(sys_memfd_create); -cond_syscall(sys_userfaultfd); - -/* performance counters: */ -cond_syscall(sys_perf_event_open); - -/* fanotify! */ -cond_syscall(sys_fanotify_init); -cond_syscall(sys_fanotify_mark); -cond_syscall(compat_sys_fanotify_mark); +#define COND_SYSCALL(name) cond_syscall(sys_##name) +#define COND_SYSCALL_COMPAT(name) cond_syscall(compat_sys_##name) + +/* + * This list is kept in the same order as include/uapi/asm-generic/unistd.h. + * Architecture specific entries go below, followed by deprecated or obsolete + * system calls. + */ + +COND_SYSCALL(io_setup); +COND_SYSCALL_COMPAT(io_setup); +COND_SYSCALL(io_destroy); +COND_SYSCALL(io_submit); +COND_SYSCALL_COMPAT(io_submit); +COND_SYSCALL(io_cancel); +COND_SYSCALL(io_getevents); +COND_SYSCALL_COMPAT(io_getevents); + +/* fs/xattr.c */ + +/* fs/dcache.c */ + +/* fs/cookies.c */ +COND_SYSCALL(lookup_dcookie); +COND_SYSCALL_COMPAT(lookup_dcookie); + +/* fs/eventfd.c */ +COND_SYSCALL(eventfd2); + +/* fs/eventfd.c */ +COND_SYSCALL(epoll_create1); +COND_SYSCALL(epoll_ctl); +COND_SYSCALL(epoll_pwait); +COND_SYSCALL_COMPAT(epoll_pwait); + +/* fs/fcntl.c */ + +/* fs/inotify_user.c */ +COND_SYSCALL(inotify_init1); +COND_SYSCALL(inotify_add_watch); +COND_SYSCALL(inotify_rm_watch); + +/* fs/ioctl.c */ + +/* fs/ioprio.c */ +COND_SYSCALL(ioprio_set); +COND_SYSCALL(ioprio_get); + +/* fs/locks.c */ +COND_SYSCALL(flock); + +/* fs/namei.c */ + +/* fs/namespace.c */ + +/* fs/nfsctl.c */ + +/* fs/open.c */ + +/* fs/pipe.c */ + +/* fs/quota.c */ +COND_SYSCALL(quotactl); + +/* fs/readdir.c */ + +/* fs/read_write.c */ + +/* fs/sendfile.c */ + +/* fs/select.c */ + +/* fs/signalfd.c */ +COND_SYSCALL(signalfd4); +COND_SYSCALL_COMPAT(signalfd4); + +/* fs/splice.c */ + +/* fs/stat.c */ + +/* fs/sync.c */ + +/* fs/timerfd.c */ +COND_SYSCALL(timerfd_create); +COND_SYSCALL(timerfd_settime); +COND_SYSCALL_COMPAT(timerfd_settime); +COND_SYSCALL(timerfd_gettime); +COND_SYSCALL_COMPAT(timerfd_gettime); + +/* fs/utimes.c */ + +/* kernel/acct.c */ +COND_SYSCALL(acct); + +/* kernel/capability.c */ +COND_SYSCALL(capget); +COND_SYSCALL(capset); + +/* kernel/exec_domain.c */ + +/* kernel/exit.c */ + +/* kernel/fork.c */ + +/* kernel/futex.c */ +COND_SYSCALL(futex); +COND_SYSCALL_COMPAT(futex); +COND_SYSCALL(set_robust_list); +COND_SYSCALL_COMPAT(set_robust_list); +COND_SYSCALL(get_robust_list); +COND_SYSCALL_COMPAT(get_robust_list); + +/* kernel/hrtimer.c */ + +/* kernel/itimer.c */ + +/* kernel/kexec.c */ +COND_SYSCALL(kexec_load); +COND_SYSCALL_COMPAT(kexec_load); + +/* kernel/module.c */ +COND_SYSCALL(init_module); +COND_SYSCALL(delete_module); + +/* kernel/posix-timers.c */ + +/* kernel/printk.c */ +COND_SYSCALL(syslog); + +/* kernel/ptrace.c */ + +/* kernel/sched/core.c */ + +/* kernel/signal.c */ + +/* kernel/sys.c */ +COND_SYSCALL(setregid); +COND_SYSCALL(setgid); +COND_SYSCALL(setreuid); +COND_SYSCALL(setuid); +COND_SYSCALL(setresuid); +COND_SYSCALL(getresuid); +COND_SYSCALL(setresgid); +COND_SYSCALL(getresgid); +COND_SYSCALL(setfsuid); +COND_SYSCALL(setfsgid); +COND_SYSCALL(setgroups); +COND_SYSCALL(getgroups); + +/* kernel/time.c */ + +/* kernel/timer.c */ + +/* ipc/mqueue.c */ +COND_SYSCALL(mq_open); +COND_SYSCALL_COMPAT(mq_open); +COND_SYSCALL(mq_unlink); +COND_SYSCALL(mq_timedsend); +COND_SYSCALL_COMPAT(mq_timedsend); +COND_SYSCALL(mq_timedreceive); +COND_SYSCALL_COMPAT(mq_timedreceive); +COND_SYSCALL(mq_notify); +COND_SYSCALL_COMPAT(mq_notify); +COND_SYSCALL(mq_getsetattr); +COND_SYSCALL_COMPAT(mq_getsetattr); + +/* ipc/msg.c */ +COND_SYSCALL(msgget); +COND_SYSCALL(msgctl); +COND_SYSCALL_COMPAT(msgctl); +COND_SYSCALL(msgrcv); +COND_SYSCALL_COMPAT(msgrcv); +COND_SYSCALL(msgsnd); +COND_SYSCALL_COMPAT(msgsnd); + +/* ipc/sem.c */ +COND_SYSCALL(semget); +COND_SYSCALL(semctl); +COND_SYSCALL_COMPAT(semctl); +COND_SYSCALL(semtimedop); +COND_SYSCALL_COMPAT(semtimedop); +COND_SYSCALL(semop); + +/* ipc/shm.c */ +COND_SYSCALL(shmget); +COND_SYSCALL(shmctl); +COND_SYSCALL_COMPAT(shmctl); +COND_SYSCALL(shmat); +COND_SYSCALL_COMPAT(shmat); +COND_SYSCALL(shmdt); + +/* net/socket.c */ +COND_SYSCALL(socket); +COND_SYSCALL(socketpair); +COND_SYSCALL(bind); +COND_SYSCALL(listen); +COND_SYSCALL(accept); +COND_SYSCALL(connect); +COND_SYSCALL(getsockname); +COND_SYSCALL(getpeername); +COND_SYSCALL(setsockopt); +COND_SYSCALL_COMPAT(setsockopt); +COND_SYSCALL(getsockopt); +COND_SYSCALL_COMPAT(getsockopt); +COND_SYSCALL(sendto); +COND_SYSCALL(shutdown); +COND_SYSCALL(recvfrom); +COND_SYSCALL_COMPAT(recvfrom); +COND_SYSCALL(sendmsg); +COND_SYSCALL_COMPAT(sendmsg); +COND_SYSCALL(recvmsg); +COND_SYSCALL_COMPAT(recvmsg); + +/* mm/filemap.c */ + +/* mm/nommu.c, also with MMU */ +COND_SYSCALL(mremap); + +/* security/keys/keyctl.c */ +COND_SYSCALL(add_key); +COND_SYSCALL(request_key); +COND_SYSCALL(keyctl); +COND_SYSCALL_COMPAT(keyctl); + +/* arch/example/kernel/sys_example.c */ + +/* mm/fadvise.c */ +COND_SYSCALL(fadvise64_64); + +/* mm/, CONFIG_MMU only */ +COND_SYSCALL(swapon); +COND_SYSCALL(swapoff); +COND_SYSCALL(mprotect); +COND_SYSCALL(msync); +COND_SYSCALL(mlock); +COND_SYSCALL(munlock); +COND_SYSCALL(mlockall); +COND_SYSCALL(munlockall); +COND_SYSCALL(mincore); +COND_SYSCALL(madvise); +COND_SYSCALL(remap_file_pages); +COND_SYSCALL(mbind); +COND_SYSCALL_COMPAT(mbind); +COND_SYSCALL(get_mempolicy); +COND_SYSCALL_COMPAT(get_mempolicy); +COND_SYSCALL(set_mempolicy); +COND_SYSCALL_COMPAT(set_mempolicy); +COND_SYSCALL(migrate_pages); +COND_SYSCALL_COMPAT(migrate_pages); +COND_SYSCALL(move_pages); +COND_SYSCALL_COMPAT(move_pages); + +COND_SYSCALL(perf_event_open); +COND_SYSCALL(accept4); +COND_SYSCALL(recvmmsg); +COND_SYSCALL_COMPAT(recvmmsg); + +/* + * Architecture specific syscalls: see further below + */ + +/* fanotify */ +COND_SYSCALL(fanotify_init); +COND_SYSCALL(fanotify_mark); /* open by handle */ -cond_syscall(sys_name_to_handle_at); -cond_syscall(sys_open_by_handle_at); -cond_syscall(compat_sys_open_by_handle_at); +COND_SYSCALL(name_to_handle_at); +COND_SYSCALL(open_by_handle_at); +COND_SYSCALL_COMPAT(open_by_handle_at); + +COND_SYSCALL(sendmmsg); +COND_SYSCALL_COMPAT(sendmmsg); +COND_SYSCALL(process_vm_readv); +COND_SYSCALL_COMPAT(process_vm_readv); +COND_SYSCALL(process_vm_writev); +COND_SYSCALL_COMPAT(process_vm_writev); /* compare kernel pointers */ -cond_syscall(sys_kcmp); +COND_SYSCALL(kcmp); + +COND_SYSCALL(finit_module); /* operate on Secure Computing state */ -cond_syscall(sys_seccomp); +COND_SYSCALL(seccomp); + +COND_SYSCALL(memfd_create); /* access BPF programs and maps */ -cond_syscall(sys_bpf); +COND_SYSCALL(bpf); /* execveat */ -cond_syscall(sys_execveat); +COND_SYSCALL(execveat); + +COND_SYSCALL(userfaultfd); /* membarrier */ -cond_syscall(sys_membarrier); +COND_SYSCALL(membarrier); + +COND_SYSCALL(mlock2); + +COND_SYSCALL(copy_file_range); /* memory protection keys */ -cond_syscall(sys_pkey_mprotect); -cond_syscall(sys_pkey_alloc); -cond_syscall(sys_pkey_free); +COND_SYSCALL(pkey_mprotect); +COND_SYSCALL(pkey_alloc); +COND_SYSCALL(pkey_free); + + +/* + * Architecture specific weak syscall entries. + */ + +/* pciconfig: alpha, arm, arm64, ia64, sparc */ +COND_SYSCALL(pciconfig_read); +COND_SYSCALL(pciconfig_write); +COND_SYSCALL(pciconfig_iobase); + +/* sys_socketcall: arm, mips, x86, ... */ +COND_SYSCALL(socketcall); +COND_SYSCALL_COMPAT(socketcall); + +/* compat syscalls for arm64, x86, ... */ +COND_SYSCALL_COMPAT(sysctl); +COND_SYSCALL_COMPAT(fanotify_mark); + +/* x86 */ +COND_SYSCALL(vm86old); +COND_SYSCALL(modify_ldt); +COND_SYSCALL_COMPAT(quotactl32); +COND_SYSCALL(vm86); +COND_SYSCALL(kexec_file_load); + +/* s390 */ +COND_SYSCALL(s390_pci_mmio_read); +COND_SYSCALL(s390_pci_mmio_write); +COND_SYSCALL_COMPAT(s390_ipc); + +/* powerpc */ +cond_syscall(ppc_rtas); +COND_SYSCALL(spu_run); +COND_SYSCALL(spu_create); +COND_SYSCALL(subpage_prot); + + +/* + * Deprecated system calls which are still defined in + * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch + */ + +/* __ARCH_WANT_SYSCALL_NO_FLAGS */ +COND_SYSCALL(epoll_create); +COND_SYSCALL(inotify_init); +COND_SYSCALL(eventfd); +COND_SYSCALL(signalfd); +COND_SYSCALL_COMPAT(signalfd); + +/* __ARCH_WANT_SYSCALL_OFF_T */ +COND_SYSCALL(fadvise64); + +/* __ARCH_WANT_SYSCALL_DEPRECATED */ +COND_SYSCALL(epoll_wait); +COND_SYSCALL(recv); +COND_SYSCALL_COMPAT(recv); +COND_SYSCALL(send); +COND_SYSCALL(bdflush); +COND_SYSCALL(uselib); + + +/* + * The syscalls below are not found in include/uapi/asm-generic/unistd.h + */ + +/* obsolete: SGETMASK_SYSCALL */ +COND_SYSCALL(sgetmask); +COND_SYSCALL(ssetmask); + +/* obsolete: SYSFS_SYSCALL */ +COND_SYSCALL(sysfs); + +/* obsolete: __ARCH_WANT_SYS_IPC */ +COND_SYSCALL(ipc); +COND_SYSCALL_COMPAT(ipc); + +/* obsolete: UID16 */ +COND_SYSCALL(chown16); +COND_SYSCALL(fchown16); +COND_SYSCALL(getegid16); +COND_SYSCALL(geteuid16); +COND_SYSCALL(getgid16); +COND_SYSCALL(getgroups16); +COND_SYSCALL(getresgid16); +COND_SYSCALL(getresuid16); +COND_SYSCALL(getuid16); +COND_SYSCALL(lchown16); +COND_SYSCALL(setfsgid16); +COND_SYSCALL(setfsuid16); +COND_SYSCALL(setgid16); +COND_SYSCALL(setgroups16); +COND_SYSCALL(setregid16); +COND_SYSCALL(setresgid16); +COND_SYSCALL(setresuid16); +COND_SYSCALL(setreuid16); +COND_SYSCALL(setuid16); diff --git a/kernel/uid16.c b/kernel/uid16.c index ef1da2a..af6925d 100644 --- a/kernel/uid16.c +++ b/kernel/uid16.c @@ -18,44 +18,46 @@ #include <linux/uaccess.h> +#include "uid16.h" + SYSCALL_DEFINE3(chown16, const char __user *, filename, old_uid_t, user, old_gid_t, group) { - return sys_chown(filename, low2highuid(user), low2highgid(group)); + return ksys_chown(filename, low2highuid(user), low2highgid(group)); } SYSCALL_DEFINE3(lchown16, const char __user *, filename, old_uid_t, user, old_gid_t, group) { - return sys_lchown(filename, low2highuid(user), low2highgid(group)); + return ksys_lchown(filename, low2highuid(user), low2highgid(group)); } SYSCALL_DEFINE3(fchown16, unsigned int, fd, old_uid_t, user, old_gid_t, group) { - return sys_fchown(fd, low2highuid(user), low2highgid(group)); + return ksys_fchown(fd, low2highuid(user), low2highgid(group)); } SYSCALL_DEFINE2(setregid16, old_gid_t, rgid, old_gid_t, egid) { - return sys_setregid(low2highgid(rgid), low2highgid(egid)); + return __sys_setregid(low2highgid(rgid), low2highgid(egid)); } SYSCALL_DEFINE1(setgid16, old_gid_t, gid) { - return sys_setgid(low2highgid(gid)); + return __sys_setgid(low2highgid(gid)); } SYSCALL_DEFINE2(setreuid16, old_uid_t, ruid, old_uid_t, euid) { - return sys_setreuid(low2highuid(ruid), low2highuid(euid)); + return __sys_setreuid(low2highuid(ruid), low2highuid(euid)); } SYSCALL_DEFINE1(setuid16, old_uid_t, uid) { - return sys_setuid(low2highuid(uid)); + return __sys_setuid(low2highuid(uid)); } SYSCALL_DEFINE3(setresuid16, old_uid_t, ruid, old_uid_t, euid, old_uid_t, suid) { - return sys_setresuid(low2highuid(ruid), low2highuid(euid), + return __sys_setresuid(low2highuid(ruid), low2highuid(euid), low2highuid(suid)); } @@ -78,11 +80,10 @@ SYSCALL_DEFINE3(getresuid16, old_uid_t __user *, ruidp, old_uid_t __user *, euid SYSCALL_DEFINE3(setresgid16, old_gid_t, rgid, old_gid_t, egid, old_gid_t, sgid) { - return sys_setresgid(low2highgid(rgid), low2highgid(egid), + return __sys_setresgid(low2highgid(rgid), low2highgid(egid), low2highgid(sgid)); } - SYSCALL_DEFINE3(getresgid16, old_gid_t __user *, rgidp, old_gid_t __user *, egidp, old_gid_t __user *, sgidp) { const struct cred *cred = current_cred(); @@ -102,12 +103,12 @@ SYSCALL_DEFINE3(getresgid16, old_gid_t __user *, rgidp, old_gid_t __user *, egid SYSCALL_DEFINE1(setfsuid16, old_uid_t, uid) { - return sys_setfsuid(low2highuid(uid)); + return __sys_setfsuid(low2highuid(uid)); } SYSCALL_DEFINE1(setfsgid16, old_gid_t, gid) { - return sys_setfsgid(low2highgid(gid)); + return __sys_setfsgid(low2highgid(gid)); } static int groups16_to_user(old_gid_t __user *grouplist, diff --git a/kernel/uid16.h b/kernel/uid16.h new file mode 100644 index 0000000..cdca040 --- /dev/null +++ b/kernel/uid16.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef LINUX_UID16_H +#define LINUX_UID16_H + +long __sys_setuid(uid_t uid); +long __sys_setgid(gid_t gid); +long __sys_setreuid(uid_t ruid, uid_t euid); +long __sys_setregid(gid_t rgid, gid_t egid); +long __sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); +long __sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); +long __sys_setfsuid(uid_t uid); +long __sys_setfsgid(gid_t gid); + +#endif /* LINUX_UID16_H */ diff --git a/kernel/umh.c b/kernel/umh.c index 18e5fa4..f76b3ff 100644 --- a/kernel/umh.c +++ b/kernel/umh.c @@ -118,7 +118,7 @@ static void call_usermodehelper_exec_sync(struct subprocess_info *sub_info) { pid_t pid; - /* If SIGCLD is ignored sys_wait4 won't populate the status. */ + /* If SIGCLD is ignored kernel_wait4 won't populate the status. */ kernel_sigaction(SIGCHLD, SIG_DFL); pid = kernel_thread(call_usermodehelper_exec_async, sub_info, SIGCHLD); if (pid < 0) { @@ -135,7 +135,7 @@ static void call_usermodehelper_exec_sync(struct subprocess_info *sub_info) * * Thus the __user pointer cast is valid here. */ - sys_wait4(pid, (int __user *)&ret, 0, NULL); + kernel_wait4(pid, (int __user *)&ret, 0, NULL); /* * If ret is 0, either call_usermodehelper_exec_async failed and diff --git a/mm/fadvise.c b/mm/fadvise.c index 767887f..afa4149 100644 --- a/mm/fadvise.c +++ b/mm/fadvise.c @@ -26,7 +26,8 @@ * POSIX_FADV_WILLNEED could set PG_Referenced, and POSIX_FADV_NOREUSE could * deactivate the pages and clear PG_Referenced. */ -SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice) + +int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice) { struct fd f = fdget(fd); struct inode *inode; @@ -185,11 +186,16 @@ out: return ret; } +SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice) +{ + return ksys_fadvise64_64(fd, offset, len, advice); +} + #ifdef __ARCH_WANT_SYS_FADVISE64 SYSCALL_DEFINE4(fadvise64, int, fd, loff_t, offset, size_t, len, int, advice) { - return sys_fadvise64_64(fd, offset, len, advice); + return ksys_fadvise64_64(fd, offset, len, advice); } #endif diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 32cba03..01cbb70 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1336,9 +1336,9 @@ static int copy_nodes_to_user(unsigned long __user *mask, unsigned long maxnode, return copy_to_user(mask, nodes_addr(*nodes), copy) ? -EFAULT : 0; } -SYSCALL_DEFINE6(mbind, unsigned long, start, unsigned long, len, - unsigned long, mode, const unsigned long __user *, nmask, - unsigned long, maxnode, unsigned, flags) +static long kernel_mbind(unsigned long start, unsigned long len, + unsigned long mode, const unsigned long __user *nmask, + unsigned long maxnode, unsigned int flags) { nodemask_t nodes; int err; @@ -1357,9 +1357,16 @@ SYSCALL_DEFINE6(mbind, unsigned long, start, unsigned long, len, return do_mbind(start, len, mode, mode_flags, &nodes, flags); } +SYSCALL_DEFINE6(mbind, unsigned long, start, unsigned long, len, + unsigned long, mode, const unsigned long __user *, nmask, + unsigned long, maxnode, unsigned int, flags) +{ + return kernel_mbind(start, len, mode, nmask, maxnode, flags); +} + /* Set the process memory policy */ -SYSCALL_DEFINE3(set_mempolicy, int, mode, const unsigned long __user *, nmask, - unsigned long, maxnode) +static long kernel_set_mempolicy(int mode, const unsigned long __user *nmask, + unsigned long maxnode) { int err; nodemask_t nodes; @@ -1377,9 +1384,15 @@ SYSCALL_DEFINE3(set_mempolicy, int, mode, const unsigned long __user *, nmask, return do_set_mempolicy(mode, flags, &nodes); } -SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode, - const unsigned long __user *, old_nodes, - const unsigned long __user *, new_nodes) +SYSCALL_DEFINE3(set_mempolicy, int, mode, const unsigned long __user *, nmask, + unsigned long, maxnode) +{ + return kernel_set_mempolicy(mode, nmask, maxnode); +} + +static int kernel_migrate_pages(pid_t pid, unsigned long maxnode, + const unsigned long __user *old_nodes, + const unsigned long __user *new_nodes) { struct mm_struct *mm = NULL; struct task_struct *task; @@ -1469,11 +1482,20 @@ out_put: } +SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode, + const unsigned long __user *, old_nodes, + const unsigned long __user *, new_nodes) +{ + return kernel_migrate_pages(pid, maxnode, old_nodes, new_nodes); +} + /* Retrieve NUMA policy */ -SYSCALL_DEFINE5(get_mempolicy, int __user *, policy, - unsigned long __user *, nmask, unsigned long, maxnode, - unsigned long, addr, unsigned long, flags) +static int kernel_get_mempolicy(int __user *policy, + unsigned long __user *nmask, + unsigned long maxnode, + unsigned long addr, + unsigned long flags) { int err; int uninitialized_var(pval); @@ -1496,6 +1518,13 @@ SYSCALL_DEFINE5(get_mempolicy, int __user *, policy, return err; } +SYSCALL_DEFINE5(get_mempolicy, int __user *, policy, + unsigned long __user *, nmask, unsigned long, maxnode, + unsigned long, addr, unsigned long, flags) +{ + return kernel_get_mempolicy(policy, nmask, maxnode, addr, flags); +} + #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE5(get_mempolicy, int __user *, policy, @@ -1514,7 +1543,7 @@ COMPAT_SYSCALL_DEFINE5(get_mempolicy, int __user *, policy, if (nmask) nm = compat_alloc_user_space(alloc_size); - err = sys_get_mempolicy(policy, nm, nr_bits+1, addr, flags); + err = kernel_get_mempolicy(policy, nm, nr_bits+1, addr, flags); if (!err && nmask) { unsigned long copy_size; @@ -1546,7 +1575,7 @@ COMPAT_SYSCALL_DEFINE3(set_mempolicy, int, mode, compat_ulong_t __user *, nmask, return -EFAULT; } - return sys_set_mempolicy(mode, nm, nr_bits+1); + return kernel_set_mempolicy(mode, nm, nr_bits+1); } COMPAT_SYSCALL_DEFINE6(mbind, compat_ulong_t, start, compat_ulong_t, len, @@ -1568,10 +1597,43 @@ COMPAT_SYSCALL_DEFINE6(mbind, compat_ulong_t, start, compat_ulong_t, len, return -EFAULT; } - return sys_mbind(start, len, mode, nm, nr_bits+1, flags); + return kernel_mbind(start, len, mode, nm, nr_bits+1, flags); } -#endif +COMPAT_SYSCALL_DEFINE4(migrate_pages, compat_pid_t, pid, + compat_ulong_t, maxnode, + const compat_ulong_t __user *, old_nodes, + const compat_ulong_t __user *, new_nodes) +{ + unsigned long __user *old = NULL; + unsigned long __user *new = NULL; + nodemask_t tmp_mask; + unsigned long nr_bits; + unsigned long size; + + nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES); + size = ALIGN(nr_bits, BITS_PER_LONG) / 8; + if (old_nodes) { + if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits)) + return -EFAULT; + old = compat_alloc_user_space(new_nodes ? size * 2 : size); + if (new_nodes) + new = old + size / sizeof(unsigned long); + if (copy_to_user(old, nodes_addr(tmp_mask), size)) + return -EFAULT; + } + if (new_nodes) { + if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits)) + return -EFAULT; + if (new == NULL) + new = compat_alloc_user_space(size); + if (copy_to_user(new, nodes_addr(tmp_mask), size)) + return -EFAULT; + } + return kernel_migrate_pages(pid, nr_bits + 1, old, new); +} + +#endif /* CONFIG_COMPAT */ struct mempolicy *__get_vma_policy(struct vm_area_struct *vma, unsigned long addr) diff --git a/mm/migrate.c b/mm/migrate.c index 1e5525a..0038866 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -34,6 +34,7 @@ #include <linux/backing-dev.h> #include <linux/compaction.h> #include <linux/syscalls.h> +#include <linux/compat.h> #include <linux/hugetlb.h> #include <linux/hugetlb_cgroup.h> #include <linux/gfp.h> @@ -1745,10 +1746,10 @@ static int do_pages_stat(struct mm_struct *mm, unsigned long nr_pages, * Move a list of pages in the address space of the currently executing * process. */ -SYSCALL_DEFINE6(move_pages, pid_t, pid, unsigned long, nr_pages, - const void __user * __user *, pages, - const int __user *, nodes, - int __user *, status, int, flags) +static int kernel_move_pages(pid_t pid, unsigned long nr_pages, + const void __user * __user *pages, + const int __user *nodes, + int __user *status, int flags) { struct task_struct *task; struct mm_struct *mm; @@ -1807,6 +1808,36 @@ out: return err; } +SYSCALL_DEFINE6(move_pages, pid_t, pid, unsigned long, nr_pages, + const void __user * __user *, pages, + const int __user *, nodes, + int __user *, status, int, flags) +{ + return kernel_move_pages(pid, nr_pages, pages, nodes, status, flags); +} + +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages, + compat_uptr_t __user *, pages32, + const int __user *, nodes, + int __user *, status, + int, flags) +{ + const void __user * __user *pages; + int i; + + pages = compat_alloc_user_space(nr_pages * sizeof(void *)); + for (i = 0; i < nr_pages; i++) { + compat_uptr_t p; + + if (get_user(p, pages32 + i) || + put_user(compat_ptr(p), pages + i)) + return -EFAULT; + } + return kernel_move_pages(pid, nr_pages, pages, nodes, status, flags); +} +#endif /* CONFIG_COMPAT */ + #ifdef CONFIG_NUMA_BALANCING /* * Returns true if this is a safe migration target node for misplaced NUMA @@ -1488,9 +1488,9 @@ unsigned long do_mmap(struct file *file, unsigned long addr, return addr; } -SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, - unsigned long, prot, unsigned long, flags, - unsigned long, fd, unsigned long, pgoff) +unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff) { struct file *file = NULL; unsigned long retval; @@ -1537,6 +1537,13 @@ out_fput: return retval; } +SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, + unsigned long, prot, unsigned long, flags, + unsigned long, fd, unsigned long, pgoff) +{ + return ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); +} + #ifdef __ARCH_WANT_SYS_OLD_MMAP struct mmap_arg_struct { unsigned long addr; @@ -1556,8 +1563,8 @@ SYSCALL_DEFINE1(old_mmap, struct mmap_arg_struct __user *, arg) if (offset_in_page(a.offset)) return -EINVAL; - return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, - a.offset >> PAGE_SHIFT); + return ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, + a.offset >> PAGE_SHIFT); } #endif /* __ARCH_WANT_SYS_OLD_MMAP */ @@ -1403,9 +1403,9 @@ error_getting_region: return -ENOMEM; } -SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, - unsigned long, prot, unsigned long, flags, - unsigned long, fd, unsigned long, pgoff) +unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff) { struct file *file = NULL; unsigned long retval = -EBADF; @@ -1427,6 +1427,13 @@ out: return retval; } +SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, + unsigned long, prot, unsigned long, flags, + unsigned long, fd, unsigned long, pgoff) +{ + return ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); +} + #ifdef __ARCH_WANT_SYS_OLD_MMAP struct mmap_arg_struct { unsigned long addr; @@ -1446,8 +1453,8 @@ SYSCALL_DEFINE1(old_mmap, struct mmap_arg_struct __user *, arg) if (offset_in_page(a.offset)) return -EINVAL; - return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, - a.offset >> PAGE_SHIFT); + return ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, + a.offset >> PAGE_SHIFT); } #endif /* __ARCH_WANT_SYS_OLD_MMAP */ diff --git a/mm/readahead.c b/mm/readahead.c index c4ca702..4d57b46 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -573,7 +573,7 @@ do_readahead(struct address_space *mapping, struct file *filp, return force_page_cache_readahead(mapping, filp, index, nr); } -SYSCALL_DEFINE3(readahead, int, fd, loff_t, offset, size_t, count) +ssize_t ksys_readahead(int fd, loff_t offset, size_t count) { ssize_t ret; struct fd f; @@ -592,3 +592,8 @@ SYSCALL_DEFINE3(readahead, int, fd, loff_t, offset, size_t, count) } return ret; } + +SYSCALL_DEFINE3(readahead, int, fd, loff_t, offset, size_t, count) +{ + return ksys_readahead(fd, offset, count); +} diff --git a/net/compat.c b/net/compat.c index 2238171..5ae7437d 100644 --- a/net/compat.c +++ b/net/compat.c @@ -383,8 +383,8 @@ static int compat_sock_setsockopt(struct socket *sock, int level, int optname, return sock_setsockopt(sock, level, optname, optval, optlen); } -COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, - char __user *, optval, unsigned int, optlen) +static int __compat_sys_setsockopt(int fd, int level, int optname, + char __user *optval, unsigned int optlen) { int err; struct socket *sock = sockfd_lookup(fd, &err); @@ -410,6 +410,12 @@ COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, return err; } +COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, + char __user *, optval, unsigned int, optlen) +{ + return __compat_sys_setsockopt(fd, level, optname, optval, optlen); +} + static int do_get_sock_timeout(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { @@ -503,8 +509,9 @@ int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *usersta } EXPORT_SYMBOL(compat_sock_get_timestampns); -COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, - char __user *, optval, int __user *, optlen) +static int __compat_sys_getsockopt(int fd, int level, int optname, + char __user *optval, + int __user *optlen) { int err; struct socket *sock = sockfd_lookup(fd, &err); @@ -530,6 +537,12 @@ COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, return err; } +COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, + char __user *, optval, int __user *, optlen) +{ + return __compat_sys_getsockopt(fd, level, optname, optval, optlen); +} + struct compat_group_req { __u32 gr_interface; struct __kernel_sockaddr_storage gr_group @@ -734,38 +747,72 @@ static unsigned char nas[21] = { }; #undef AL -COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags) +static inline long __compat_sys_sendmsg(int fd, + struct compat_msghdr __user *msg, + unsigned int flags) { - return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT); + return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, + flags | MSG_CMSG_COMPAT, false); +} + +COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, + unsigned int, flags) +{ + return __compat_sys_sendmsg(fd, msg, flags); +} + +static inline long __compat_sys_sendmmsg(int fd, + struct compat_mmsghdr __user *mmsg, + unsigned int vlen, unsigned int flags) +{ + return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, + flags | MSG_CMSG_COMPAT, false); } COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags) { - return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, - flags | MSG_CMSG_COMPAT); + return __compat_sys_sendmmsg(fd, mmsg, vlen, flags); +} + +static inline long __compat_sys_recvmsg(int fd, + struct compat_msghdr __user *msg, + unsigned int flags) +{ + return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, + flags | MSG_CMSG_COMPAT, false); +} + +COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, + unsigned int, flags) +{ + return __compat_sys_recvmsg(fd, msg, flags); } -COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags) +static inline long __compat_sys_recvfrom(int fd, void __user *buf, + compat_size_t len, unsigned int flags, + struct sockaddr __user *addr, + int __user *addrlen) { - return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT); + return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, + addrlen); } COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags) { - return sys_recv(fd, buf, len, flags | MSG_CMSG_COMPAT); + return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL); } COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int __user *, addrlen) { - return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen); + return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen); } -COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, - unsigned int, vlen, unsigned int, flags, - struct compat_timespec __user *, timeout) +static int __compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, + unsigned int vlen, unsigned int flags, + struct compat_timespec __user *timeout) { int datagrams; struct timespec ktspec; @@ -785,6 +832,13 @@ COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, return datagrams; } +COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, + unsigned int, vlen, unsigned int, flags, + struct compat_timespec __user *, timeout) +{ + return __compat_sys_recvmmsg(fd, mmsg, vlen, flags, timeout); +} + COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args) { u32 a[AUDITSC_ARGS]; @@ -810,68 +864,72 @@ COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args) switch (call) { case SYS_SOCKET: - ret = sys_socket(a0, a1, a[2]); + ret = __sys_socket(a0, a1, a[2]); break; case SYS_BIND: - ret = sys_bind(a0, compat_ptr(a1), a[2]); + ret = __sys_bind(a0, compat_ptr(a1), a[2]); break; case SYS_CONNECT: - ret = sys_connect(a0, compat_ptr(a1), a[2]); + ret = __sys_connect(a0, compat_ptr(a1), a[2]); break; case SYS_LISTEN: - ret = sys_listen(a0, a1); + ret = __sys_listen(a0, a1); break; case SYS_ACCEPT: - ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0); + ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0); break; case SYS_GETSOCKNAME: - ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); + ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); break; case SYS_GETPEERNAME: - ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); + ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); break; case SYS_SOCKETPAIR: - ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); + ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); break; case SYS_SEND: - ret = sys_send(a0, compat_ptr(a1), a[2], a[3]); + ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0); break; case SYS_SENDTO: - ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]); + ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], + compat_ptr(a[4]), a[5]); break; case SYS_RECV: - ret = compat_sys_recv(a0, compat_ptr(a1), a[2], a[3]); + ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], + NULL, NULL); break; case SYS_RECVFROM: - ret = compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], - compat_ptr(a[4]), compat_ptr(a[5])); + ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], + compat_ptr(a[4]), + compat_ptr(a[5])); break; case SYS_SHUTDOWN: - ret = sys_shutdown(a0, a1); + ret = __sys_shutdown(a0, a1); break; case SYS_SETSOCKOPT: - ret = compat_sys_setsockopt(a0, a1, a[2], - compat_ptr(a[3]), a[4]); + ret = __compat_sys_setsockopt(a0, a1, a[2], + compat_ptr(a[3]), a[4]); break; case SYS_GETSOCKOPT: - ret = compat_sys_getsockopt(a0, a1, a[2], - compat_ptr(a[3]), compat_ptr(a[4])); + ret = __compat_sys_getsockopt(a0, a1, a[2], + compat_ptr(a[3]), + compat_ptr(a[4])); break; case SYS_SENDMSG: - ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); + ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); break; case SYS_SENDMMSG: - ret = compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]); + ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]); break; case SYS_RECVMSG: - ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); + ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); break; case SYS_RECVMMSG: - ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3], - compat_ptr(a[4])); + ret = __compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3], + compat_ptr(a[4])); break; case SYS_ACCEPT4: - ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]); + ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]); break; default: ret = -EINVAL; diff --git a/net/socket.c b/net/socket.c index 08847c3..4ba9fc6 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1332,7 +1332,7 @@ int sock_create_kern(struct net *net, int family, int type, int protocol, struct } EXPORT_SYMBOL(sock_create_kern); -SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) +int __sys_socket(int family, int type, int protocol) { int retval; struct socket *sock; @@ -1359,12 +1359,16 @@ SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) return sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK)); } +SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) +{ + return __sys_socket(family, type, protocol); +} + /* * Create a pair of connected sockets. */ -SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol, - int __user *, usockvec) +int __sys_socketpair(int family, int type, int protocol, int __user *usockvec) { struct socket *sock1, *sock2; int fd1, fd2, err; @@ -1449,6 +1453,12 @@ out: return err; } +SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol, + int __user *, usockvec) +{ + return __sys_socketpair(family, type, protocol, usockvec); +} + /* * Bind a name to a socket. Nothing much to do here since it's * the protocol's responsibility to handle the local address. @@ -1457,7 +1467,7 @@ out: * the protocol layer (having also checked the address is ok). */ -SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) +int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen) { struct socket *sock; struct sockaddr_storage address; @@ -1480,13 +1490,18 @@ SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) return err; } +SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) +{ + return __sys_bind(fd, umyaddr, addrlen); +} + /* * Perform a listen. Basically, we allow the protocol to do anything * necessary for a listen, and if that works, we mark the socket as * ready for listening. */ -SYSCALL_DEFINE2(listen, int, fd, int, backlog) +int __sys_listen(int fd, int backlog) { struct socket *sock; int err, fput_needed; @@ -1507,6 +1522,11 @@ SYSCALL_DEFINE2(listen, int, fd, int, backlog) return err; } +SYSCALL_DEFINE2(listen, int, fd, int, backlog) +{ + return __sys_listen(fd, backlog); +} + /* * For accept, we attempt to create a new socket, set up the link * with the client, wake up the client, then return the new @@ -1519,8 +1539,8 @@ SYSCALL_DEFINE2(listen, int, fd, int, backlog) * clean when we restucture accept also. */ -SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, - int __user *, upeer_addrlen, int, flags) +int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, + int __user *upeer_addrlen, int flags) { struct socket *sock, *newsock; struct file *newfile; @@ -1599,10 +1619,16 @@ out_fd: goto out_put; } +SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, + int __user *, upeer_addrlen, int, flags) +{ + return __sys_accept4(fd, upeer_sockaddr, upeer_addrlen, flags); +} + SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen) { - return sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0); + return __sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0); } /* @@ -1617,8 +1643,7 @@ SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, * include the -EINPROGRESS status for such sockets. */ -SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, - int, addrlen) +int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen) { struct socket *sock; struct sockaddr_storage address; @@ -1644,13 +1669,19 @@ out: return err; } +SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, + int, addrlen) +{ + return __sys_connect(fd, uservaddr, addrlen); +} + /* * Get the local address ('name') of a socket object. Move the obtained * name to user space. */ -SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr, - int __user *, usockaddr_len) +int __sys_getsockname(int fd, struct sockaddr __user *usockaddr, + int __user *usockaddr_len) { struct socket *sock; struct sockaddr_storage address; @@ -1675,13 +1706,19 @@ out: return err; } +SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr, + int __user *, usockaddr_len) +{ + return __sys_getsockname(fd, usockaddr, usockaddr_len); +} + /* * Get the remote address ('name') of a socket object. Move the obtained * name to user space. */ -SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, - int __user *, usockaddr_len) +int __sys_getpeername(int fd, struct sockaddr __user *usockaddr, + int __user *usockaddr_len) { struct socket *sock; struct sockaddr_storage address; @@ -1706,15 +1743,19 @@ SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, return err; } +SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, + int __user *, usockaddr_len) +{ + return __sys_getpeername(fd, usockaddr, usockaddr_len); +} + /* * Send a datagram to a given address. We move the address into kernel * space and check the user space data area is readable before invoking * the protocol. */ - -SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len, - unsigned int, flags, struct sockaddr __user *, addr, - int, addr_len) +int __sys_sendto(int fd, void __user *buff, size_t len, unsigned int flags, + struct sockaddr __user *addr, int addr_len) { struct socket *sock; struct sockaddr_storage address; @@ -1752,6 +1793,13 @@ out: return err; } +SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len, + unsigned int, flags, struct sockaddr __user *, addr, + int, addr_len) +{ + return __sys_sendto(fd, buff, len, flags, addr, addr_len); +} + /* * Send a datagram down a socket. */ @@ -1759,7 +1807,7 @@ out: SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len, unsigned int, flags) { - return sys_sendto(fd, buff, len, flags, NULL, 0); + return __sys_sendto(fd, buff, len, flags, NULL, 0); } /* @@ -1767,10 +1815,8 @@ SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len, * sender. We verify the buffers are writable and if needed move the * sender address from kernel to user space. */ - -SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size, - unsigned int, flags, struct sockaddr __user *, addr, - int __user *, addr_len) +int __sys_recvfrom(int fd, void __user *ubuf, size_t size, unsigned int flags, + struct sockaddr __user *addr, int __user *addr_len) { struct socket *sock; struct iovec iov; @@ -1810,6 +1856,13 @@ out: return err; } +SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size, + unsigned int, flags, struct sockaddr __user *, addr, + int __user *, addr_len) +{ + return __sys_recvfrom(fd, ubuf, size, flags, addr, addr_len); +} + /* * Receive a datagram from a socket. */ @@ -1817,7 +1870,7 @@ out: SYSCALL_DEFINE4(recv, int, fd, void __user *, ubuf, size_t, size, unsigned int, flags) { - return sys_recvfrom(fd, ubuf, size, flags, NULL, NULL); + return __sys_recvfrom(fd, ubuf, size, flags, NULL, NULL); } /* @@ -1825,8 +1878,8 @@ SYSCALL_DEFINE4(recv, int, fd, void __user *, ubuf, size_t, size, * to pass the user mode parameter for the protocols to sort out. */ -SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, - char __user *, optval, int, optlen) +static int __sys_setsockopt(int fd, int level, int optname, + char __user *optval, int optlen) { int err, fput_needed; struct socket *sock; @@ -1854,13 +1907,19 @@ out_put: return err; } +SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, + char __user *, optval, int, optlen) +{ + return __sys_setsockopt(fd, level, optname, optval, optlen); +} + /* * Get a socket option. Because we don't know the option lengths we have * to pass a user mode parameter for the protocols to sort out. */ -SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, - char __user *, optval, int __user *, optlen) +static int __sys_getsockopt(int fd, int level, int optname, + char __user *optval, int __user *optlen) { int err, fput_needed; struct socket *sock; @@ -1885,11 +1944,17 @@ out_put: return err; } +SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, + char __user *, optval, int __user *, optlen) +{ + return __sys_getsockopt(fd, level, optname, optval, optlen); +} + /* * Shutdown a socket. */ -SYSCALL_DEFINE2(shutdown, int, fd, int, how) +int __sys_shutdown(int fd, int how) { int err, fput_needed; struct socket *sock; @@ -1904,6 +1969,11 @@ SYSCALL_DEFINE2(shutdown, int, fd, int, how) return err; } +SYSCALL_DEFINE2(shutdown, int, fd, int, how) +{ + return __sys_shutdown(fd, how); +} + /* A couple of helpful macros for getting the address of the 32/64 bit * fields which are the same type (int / unsigned) on our platforms. */ @@ -2067,12 +2137,16 @@ out_freeiov: * BSD sendmsg interface */ -long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags) +long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, + bool forbid_cmsg_compat) { int fput_needed, err; struct msghdr msg_sys; struct socket *sock; + if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) + return -EINVAL; + sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; @@ -2086,9 +2160,7 @@ out: SYSCALL_DEFINE3(sendmsg, int, fd, struct user_msghdr __user *, msg, unsigned int, flags) { - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; - return __sys_sendmsg(fd, msg, flags); + return __sys_sendmsg(fd, msg, flags, true); } /* @@ -2096,7 +2168,7 @@ SYSCALL_DEFINE3(sendmsg, int, fd, struct user_msghdr __user *, msg, unsigned int */ int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, - unsigned int flags) + unsigned int flags, bool forbid_cmsg_compat) { int fput_needed, err, datagrams; struct socket *sock; @@ -2106,6 +2178,9 @@ int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, struct used_address used_address; unsigned int oflags = flags; + if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) + return -EINVAL; + if (vlen > UIO_MAXIOV) vlen = UIO_MAXIOV; @@ -2162,9 +2237,7 @@ int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, SYSCALL_DEFINE4(sendmmsg, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags) { - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; - return __sys_sendmmsg(fd, mmsg, vlen, flags); + return __sys_sendmmsg(fd, mmsg, vlen, flags, true); } static int ___sys_recvmsg(struct socket *sock, struct user_msghdr __user *msg, @@ -2237,12 +2310,16 @@ out_freeiov: * BSD recvmsg interface */ -long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags) +long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, + bool forbid_cmsg_compat) { int fput_needed, err; struct msghdr msg_sys; struct socket *sock; + if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) + return -EINVAL; + sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; @@ -2257,9 +2334,7 @@ out: SYSCALL_DEFINE3(recvmsg, int, fd, struct user_msghdr __user *, msg, unsigned int, flags) { - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; - return __sys_recvmsg(fd, msg, flags); + return __sys_recvmsg(fd, msg, flags, true); } /* @@ -2375,9 +2450,9 @@ out_put: return datagrams; } -SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, - unsigned int, vlen, unsigned int, flags, - struct timespec __user *, timeout) +static int do_sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, + unsigned int vlen, unsigned int flags, + struct timespec __user *timeout) { int datagrams; struct timespec timeout_sys; @@ -2400,6 +2475,13 @@ SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, return datagrams; } +SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, + unsigned int, vlen, unsigned int, flags, + struct timespec __user *, timeout) +{ + return do_sys_recvmmsg(fd, mmsg, vlen, flags, timeout); +} + #ifdef __ARCH_WANT_SYS_SOCKETCALL /* Argument list sizes for sys_socketcall */ #define AL(x) ((x) * sizeof(unsigned long)) @@ -2447,76 +2529,82 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) switch (call) { case SYS_SOCKET: - err = sys_socket(a0, a1, a[2]); + err = __sys_socket(a0, a1, a[2]); break; case SYS_BIND: - err = sys_bind(a0, (struct sockaddr __user *)a1, a[2]); + err = __sys_bind(a0, (struct sockaddr __user *)a1, a[2]); break; case SYS_CONNECT: - err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]); + err = __sys_connect(a0, (struct sockaddr __user *)a1, a[2]); break; case SYS_LISTEN: - err = sys_listen(a0, a1); + err = __sys_listen(a0, a1); break; case SYS_ACCEPT: - err = sys_accept4(a0, (struct sockaddr __user *)a1, - (int __user *)a[2], 0); + err = __sys_accept4(a0, (struct sockaddr __user *)a1, + (int __user *)a[2], 0); break; case SYS_GETSOCKNAME: err = - sys_getsockname(a0, (struct sockaddr __user *)a1, - (int __user *)a[2]); + __sys_getsockname(a0, (struct sockaddr __user *)a1, + (int __user *)a[2]); break; case SYS_GETPEERNAME: err = - sys_getpeername(a0, (struct sockaddr __user *)a1, - (int __user *)a[2]); + __sys_getpeername(a0, (struct sockaddr __user *)a1, + (int __user *)a[2]); break; case SYS_SOCKETPAIR: - err = sys_socketpair(a0, a1, a[2], (int __user *)a[3]); + err = __sys_socketpair(a0, a1, a[2], (int __user *)a[3]); break; case SYS_SEND: - err = sys_send(a0, (void __user *)a1, a[2], a[3]); + err = __sys_sendto(a0, (void __user *)a1, a[2], a[3], + NULL, 0); break; case SYS_SENDTO: - err = sys_sendto(a0, (void __user *)a1, a[2], a[3], - (struct sockaddr __user *)a[4], a[5]); + err = __sys_sendto(a0, (void __user *)a1, a[2], a[3], + (struct sockaddr __user *)a[4], a[5]); break; case SYS_RECV: - err = sys_recv(a0, (void __user *)a1, a[2], a[3]); + err = __sys_recvfrom(a0, (void __user *)a1, a[2], a[3], + NULL, NULL); break; case SYS_RECVFROM: - err = sys_recvfrom(a0, (void __user *)a1, a[2], a[3], - (struct sockaddr __user *)a[4], - (int __user *)a[5]); + err = __sys_recvfrom(a0, (void __user *)a1, a[2], a[3], + (struct sockaddr __user *)a[4], + (int __user *)a[5]); break; case SYS_SHUTDOWN: - err = sys_shutdown(a0, a1); + err = __sys_shutdown(a0, a1); break; case SYS_SETSOCKOPT: - err = sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]); + err = __sys_setsockopt(a0, a1, a[2], (char __user *)a[3], + a[4]); break; case SYS_GETSOCKOPT: err = - sys_getsockopt(a0, a1, a[2], (char __user *)a[3], - (int __user *)a[4]); + __sys_getsockopt(a0, a1, a[2], (char __user *)a[3], + (int __user *)a[4]); break; case SYS_SENDMSG: - err = sys_sendmsg(a0, (struct user_msghdr __user *)a1, a[2]); + err = __sys_sendmsg(a0, (struct user_msghdr __user *)a1, + a[2], true); break; case SYS_SENDMMSG: - err = sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3]); + err = __sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], + a[3], true); break; case SYS_RECVMSG: - err = sys_recvmsg(a0, (struct user_msghdr __user *)a1, a[2]); + err = __sys_recvmsg(a0, (struct user_msghdr __user *)a1, + a[2], true); break; case SYS_RECVMMSG: - err = sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], - (struct timespec __user *)a[4]); + err = do_sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], + a[3], (struct timespec __user *)a[4]); break; case SYS_ACCEPT4: - err = sys_accept4(a0, (struct sockaddr __user *)a1, - (int __user *)a[2], a[3]); + err = __sys_accept4(a0, (struct sockaddr __user *)a1, + (int __user *)a[2], a[3]); break; default: err = -EINVAL; |
