diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/alpha/kernel/osf_sys.c | 13 | ||||
| -rw-r--r-- | arch/ia64/kernel/perfmon.c | 18 | ||||
| -rw-r--r-- | arch/parisc/hpux/fs.c | 17 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/systbl.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/sys_ppc32.c | 45 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_syscalls.c | 21 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/coredump.c | 40 | ||||
| -rw-r--r-- | arch/s390/hypfs/inode.c | 2 | ||||
| -rw-r--r-- | arch/sparc/include/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys32.S | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sparc32.c | 46 | ||||
| -rw-r--r-- | arch/um/drivers/mconsole_kern.c | 99 |
13 files changed, 83 insertions, 226 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index 9503a4b..63e77e3 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -145,27 +145,24 @@ SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd, long __user *, basep) { int error; - struct file *file; + struct fd arg = fdget(fd); struct osf_dirent_callback buf; - error = -EBADF; - file = fget(fd); - if (!file) - goto out; + if (!arg.file) + return -EBADF; buf.dirent = dirent; buf.basep = basep; buf.count = count; buf.error = 0; - error = vfs_readdir(file, osf_filldir, &buf); + error = vfs_readdir(arg.file, osf_filldir, &buf); if (error >= 0) error = buf.error; if (count != buf.count) error = count - buf.count; - fput(file); - out: + fdput(arg); return error; } diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 5a5c222..f388b4e 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -2306,7 +2306,7 @@ pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t * partially initialize the vma for the sampling buffer */ vma->vm_mm = mm; - vma->vm_file = filp; + vma->vm_file = get_file(filp); vma->vm_flags = VM_READ| VM_MAYREAD |VM_RESERVED; vma->vm_page_prot = PAGE_READONLY; /* XXX may need to change */ @@ -2345,8 +2345,6 @@ pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t goto error; } - get_file(filp); - /* * now insert the vma in the vm list for the process, must be * done with mmap lock held @@ -4782,7 +4780,7 @@ recheck: asmlinkage long sys_perfmonctl (int fd, int cmd, void __user *arg, int count) { - struct file *file = NULL; + struct fd f = {NULL, 0}; pfm_context_t *ctx = NULL; unsigned long flags = 0UL; void *args_k = NULL; @@ -4879,17 +4877,17 @@ restart_args: ret = -EBADF; - file = fget(fd); - if (unlikely(file == NULL)) { + f = fdget(fd); + if (unlikely(f.file == NULL)) { DPRINT(("invalid fd %d\n", fd)); goto error_args; } - if (unlikely(PFM_IS_FILE(file) == 0)) { + if (unlikely(PFM_IS_FILE(f.file) == 0)) { DPRINT(("fd %d not related to perfmon\n", fd)); goto error_args; } - ctx = file->private_data; + ctx = f.file->private_data; if (unlikely(ctx == NULL)) { DPRINT(("no context for fd %d\n", fd)); goto error_args; @@ -4919,8 +4917,8 @@ abort_locked: if (call_made && PFM_CMD_RW_ARG(cmd) && copy_to_user(arg, args_k, base_sz*count)) ret = -EFAULT; error_args: - if (file) - fput(file); + if (f.file) + fdput(f); kfree(args_k); diff --git a/arch/parisc/hpux/fs.c b/arch/parisc/hpux/fs.c index c71eb6c..6785de7 100644 --- a/arch/parisc/hpux/fs.c +++ b/arch/parisc/hpux/fs.c @@ -109,33 +109,32 @@ Efault: int hpux_getdents(unsigned int fd, struct hpux_dirent __user *dirent, unsigned int count) { - struct file * file; + struct fd arg; struct hpux_dirent __user * lastdirent; struct getdents_callback buf; - int error = -EBADF; + int error; - file = fget(fd); - if (!file) - goto out; + arg = fdget(fd); + if (!arg.file) + return -EBADF; buf.current_dir = dirent; buf.previous = NULL; buf.count = count; buf.error = 0; - error = vfs_readdir(file, filldir, &buf); + error = vfs_readdir(arg.file, filldir, &buf); if (error >= 0) error = buf.error; lastdirent = buf.previous; if (lastdirent) { - if (put_user(file->f_pos, &lastdirent->d_off)) + if (put_user(arg.file->f_pos, &lastdirent->d_off)) error = -EFAULT; else error = count - buf.count; } - fput(file); -out: + fdput(arg); return error; } diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h index 559ae1e..8408387 100644 --- a/arch/powerpc/include/asm/systbl.h +++ b/arch/powerpc/include/asm/systbl.h @@ -189,7 +189,7 @@ SYSCALL_SPU(getcwd) SYSCALL_SPU(capget) SYSCALL_SPU(capset) COMPAT_SYS(sigaltstack) -SYSX_SPU(sys_sendfile64,compat_sys_sendfile,sys_sendfile) +SYSX_SPU(sys_sendfile,compat_sys_sendfile_wrapper,sys_sendfile) SYSCALL(ni_syscall) SYSCALL(ni_syscall) PPC_SYS(vfork) @@ -229,7 +229,7 @@ COMPAT_SYS_SPU(sched_setaffinity) COMPAT_SYS_SPU(sched_getaffinity) SYSCALL(ni_syscall) SYSCALL(ni_syscall) -SYS32ONLY(sendfile64) +SYSX(sys_ni_syscall,compat_sys_sendfile64_wrapper,sys_sendfile64) COMPAT_SYS_SPU(io_setup) SYSCALL_SPU(io_destroy) COMPAT_SYS_SPU(io_getevents) diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index bd377a3..c683fa3 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -419,6 +419,7 @@ #define __ARCH_WANT_COMPAT_SYS_TIME #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND #define __ARCH_WANT_SYS_NEWFSTATAT +#define __ARCH_WANT_COMPAT_SYS_SENDFILE #endif /* diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c index 81c5706..abd1112 100644 --- a/arch/powerpc/kernel/sys_ppc32.c +++ b/arch/powerpc/kernel/sys_ppc32.c @@ -143,48 +143,17 @@ long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t pt * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ -asmlinkage long compat_sys_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count) +asmlinkage long compat_sys_sendfile_wrapper(u32 out_fd, u32 in_fd, + compat_off_t __user *offset, u32 count) { - mm_segment_t old_fs = get_fs(); - int ret; - off_t of; - off_t __user *up; - - if (offset && get_user(of, offset)) - return -EFAULT; - - /* The __user pointer cast is valid because of the set_fs() */ - set_fs(KERNEL_DS); - up = offset ? (off_t __user *) &of : NULL; - ret = sys_sendfile((int)out_fd, (int)in_fd, up, count); - set_fs(old_fs); - - if (offset && put_user(of, offset)) - return -EFAULT; - - return ret; + return compat_sys_sendfile((int)out_fd, (int)in_fd, offset, count); } -asmlinkage int compat_sys_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count) +asmlinkage long compat_sys_sendfile64_wrapper(u32 out_fd, u32 in_fd, + compat_loff_t __user *offset, u32 count) { - mm_segment_t old_fs = get_fs(); - int ret; - loff_t lof; - loff_t __user *up; - - if (offset && get_user(lof, offset)) - return -EFAULT; - - /* The __user pointer cast is valid because of the set_fs() */ - set_fs(KERNEL_DS); - up = offset ? (loff_t __user *) &lof : NULL; - ret = sys_sendfile64(out_fd, in_fd, up, count); - set_fs(old_fs); - - if (offset && put_user(lof, offset)) - return -EFAULT; - - return ret; + return sys_sendfile((int)out_fd, (int)in_fd, + (off_t __user *)offset, count); } long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2, diff --git a/arch/powerpc/platforms/cell/spu_syscalls.c b/arch/powerpc/platforms/cell/spu_syscalls.c index 714bbfc..db4e638 100644 --- a/arch/powerpc/platforms/cell/spu_syscalls.c +++ b/arch/powerpc/platforms/cell/spu_syscalls.c @@ -69,8 +69,6 @@ SYSCALL_DEFINE4(spu_create, const char __user *, name, unsigned int, flags, umode_t, mode, int, neighbor_fd) { long ret; - struct file *neighbor; - int fput_needed; struct spufs_calls *calls; calls = spufs_calls_get(); @@ -78,11 +76,11 @@ SYSCALL_DEFINE4(spu_create, const char __user *, name, unsigned int, flags, return -ENOSYS; if (flags & SPU_CREATE_AFFINITY_SPU) { + struct fd neighbor = fdget(neighbor_fd); ret = -EBADF; - neighbor = fget_light(neighbor_fd, &fput_needed); - if (neighbor) { - ret = calls->create_thread(name, flags, mode, neighbor); - fput_light(neighbor, fput_needed); + if (neighbor.file) { + ret = calls->create_thread(name, flags, mode, neighbor.file); + fdput(neighbor); } } else ret = calls->create_thread(name, flags, mode, NULL); @@ -94,8 +92,7 @@ SYSCALL_DEFINE4(spu_create, const char __user *, name, unsigned int, flags, asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, __u32 __user *ustatus) { long ret; - struct file *filp; - int fput_needed; + struct fd arg; struct spufs_calls *calls; calls = spufs_calls_get(); @@ -103,10 +100,10 @@ asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, __u32 __user *ustatus) return -ENOSYS; ret = -EBADF; - filp = fget_light(fd, &fput_needed); - if (filp) { - ret = calls->spu_run(filp, unpc, ustatus); - fput_light(filp, fput_needed); + arg = fdget(fd); + if (arg.file) { + ret = calls->spu_run(arg.file, unpc, ustatus); + fdput(arg); } spufs_calls_put(calls); diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c index c2c5b07..657e3f2 100644 --- a/arch/powerpc/platforms/cell/spufs/coredump.c +++ b/arch/powerpc/platforms/cell/spufs/coredump.c @@ -106,6 +106,17 @@ static int spufs_ctx_note_size(struct spu_context *ctx, int dfd) return total; } +static int match_context(const void *v, struct file *file, unsigned fd) +{ + struct spu_context *ctx; + if (file->f_op != &spufs_context_fops) + return 0; + ctx = SPUFS_I(file->f_dentry->d_inode)->i_ctx; + if (ctx->flags & SPU_CREATE_NOSCHED) + return 0; + return fd + 1; +} + /* * The additional architecture-specific notes for Cell are various * context files in the spu context. @@ -115,29 +126,18 @@ static int spufs_ctx_note_size(struct spu_context *ctx, int dfd) * internal functionality to dump them without needing to actually * open the files. */ +/* + * descriptor table is not shared, so files can't change or go away. + */ static struct spu_context *coredump_next_context(int *fd) { - struct fdtable *fdt = files_fdtable(current->files); struct file *file; - struct spu_context *ctx = NULL; - - for (; *fd < fdt->max_fds; (*fd)++) { - if (!fd_is_open(*fd, fdt)) - continue; - - file = fcheck(*fd); - - if (!file || file->f_op != &spufs_context_fops) - continue; - - ctx = SPUFS_I(file->f_dentry->d_inode)->i_ctx; - if (ctx->flags & SPU_CREATE_NOSCHED) - continue; - - break; - } - - return ctx; + int n = iterate_fd(current->files, *fd, match_context, NULL); + if (!n) + return NULL; + *fd = n - 1; + file = fcheck(*fd); + return SPUFS_I(file->f_dentry->d_inode)->i_ctx; } int spufs_coredump_extra_notes_size(void) diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index 124ec1a..06ea69b 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -72,8 +72,6 @@ static void hypfs_remove(struct dentry *dentry) struct dentry *parent; parent = dentry->d_parent; - if (!parent || !parent->d_inode) - return; mutex_lock(&parent->d_inode->i_mutex); if (hypfs_positive(dentry)) { if (S_ISDIR(dentry->d_inode->i_mode)) diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index fb26934..d9a677c 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -447,6 +447,7 @@ #else #define __ARCH_WANT_COMPAT_SYS_TIME #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND +#define __ARCH_WANT_COMPAT_SYS_SENDFILE #endif /* diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S index d97f3eb..44025f4 100644 --- a/arch/sparc/kernel/sys32.S +++ b/arch/sparc/kernel/sys32.S @@ -90,7 +90,7 @@ SIGN1(sys32_mkdir, sys_mkdir, %o1) SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5) SIGN1(sys32_sysfs, compat_sys_sysfs, %o0) SIGN2(sys32_sendfile, compat_sys_sendfile, %o0, %o1) -SIGN2(sys32_sendfile64, compat_sys_sendfile64, %o0, %o1) +SIGN2(sys32_sendfile64, sys_sendfile, %o0, %o1) SIGN1(sys32_prctl, sys_prctl, %o0) SIGN1(sys32_sched_rr_get_interval, compat_sys_sched_rr_get_interval, %o0) SIGN2(sys32_waitpid, sys_waitpid, %o0, %o2) diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index f739233..d862499 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -506,52 +506,6 @@ long compat_sys_fadvise64_64(int fd, advice); } -asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, - compat_off_t __user *offset, - compat_size_t count) -{ - mm_segment_t old_fs = get_fs(); - int ret; - off_t of; - - if (offset && get_user(of, offset)) - return -EFAULT; - - set_fs(KERNEL_DS); - ret = sys_sendfile(out_fd, in_fd, - offset ? (off_t __user *) &of : NULL, - count); - set_fs(old_fs); - - if (offset && put_user(of, offset)) - return -EFAULT; - - return ret; -} - -asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, - compat_loff_t __user *offset, - compat_size_t count) -{ - mm_segment_t old_fs = get_fs(); - int ret; - loff_t lof; - - if (offset && get_user(lof, offset)) - return -EFAULT; - - set_fs(KERNEL_DS); - ret = sys_sendfile64(out_fd, in_fd, - offset ? (loff_t __user *) &lof : NULL, - count); - set_fs(old_fs); - - if (offset && put_user(lof, offset)) - return -EFAULT; - - return ret; -} - /* This is just a version for 32-bit applications which does * not force O_LARGEFILE on. */ diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c index c17de0d..9efeb6d 100644 --- a/arch/um/drivers/mconsole_kern.c +++ b/arch/um/drivers/mconsole_kern.c @@ -21,6 +21,9 @@ #include <linux/un.h> #include <linux/workqueue.h> #include <linux/mutex.h> +#include <linux/fs.h> +#include <linux/mount.h> +#include <linux/file.h> #include <asm/uaccess.h> #include <asm/switch_to.h> @@ -118,90 +121,38 @@ void mconsole_log(struct mc_request *req) mconsole_reply(req, "", 0, 0); } -/* This is a more convoluted version of mconsole_proc, which has some stability - * problems; however, we need it fixed, because it is expected that UML users - * mount HPPFS instead of procfs on /proc. And we want mconsole_proc to still - * show the real procfs content, not the ones from hppfs.*/ -#if 0 void mconsole_proc(struct mc_request *req) { struct vfsmount *mnt = current->nsproxy->pid_ns->proc_mnt; - struct file *file; - int n; - char *ptr = req->request.data, *buf; - mm_segment_t old_fs = get_fs(); - - ptr += strlen("proc"); - ptr = skip_spaces(ptr); - - file = file_open_root(mnt->mnt_root, mnt, ptr, O_RDONLY); - if (IS_ERR(file)) { - mconsole_reply(req, "Failed to open file", 1, 0); - goto out; - } - - buf = kmalloc(PAGE_SIZE, GFP_KERNEL); - if (buf == NULL) { - mconsole_reply(req, "Failed to allocate buffer", 1, 0); - goto out_fput; - } - - if (file->f_op->read) { - do { - loff_t pos; - set_fs(KERNEL_DS); - n = vfs_read(file, buf, PAGE_SIZE - 1, &pos); - file_pos_write(file, pos); - set_fs(old_fs); - if (n >= 0) { - buf[n] = '\0'; - mconsole_reply(req, buf, 0, (n > 0)); - } - else { - mconsole_reply(req, "Read of file failed", - 1, 0); - goto out_free; - } - } while (n > 0); - } - else mconsole_reply(req, "", 0, 0); - - out_free: - kfree(buf); - out_fput: - fput(file); - out: ; -} -#endif - -void mconsole_proc(struct mc_request *req) -{ - char path[64]; char *buf; int len; - int fd; + struct file *file; int first_chunk = 1; char *ptr = req->request.data; ptr += strlen("proc"); ptr = skip_spaces(ptr); - snprintf(path, sizeof(path), "/proc/%s", ptr); - fd = sys_open(path, 0, 0); - if (fd < 0) { + file = file_open_root(mnt->mnt_root, mnt, ptr, O_RDONLY); + if (IS_ERR(file)) { mconsole_reply(req, "Failed to open file", 1, 0); - printk(KERN_ERR "open %s: %d\n",path,fd); + printk(KERN_ERR "open /proc/%s: %ld\n", ptr, PTR_ERR(file)); goto out; } buf = kmalloc(PAGE_SIZE, GFP_KERNEL); if (buf == NULL) { mconsole_reply(req, "Failed to allocate buffer", 1, 0); - goto out_close; + goto out_fput; } - for (;;) { - len = sys_read(fd, buf, PAGE_SIZE-1); + do { + loff_t pos; + mm_segment_t old_fs = get_fs(); + set_fs(KERNEL_DS); + len = vfs_read(file, buf, PAGE_SIZE - 1, &pos); + set_fs(old_fs); + file->f_pos = pos; if (len < 0) { mconsole_reply(req, "Read of file failed", 1, 0); goto out_free; @@ -211,22 +162,14 @@ void mconsole_proc(struct mc_request *req) mconsole_reply(req, "\n", 0, 1); first_chunk = 0; } - if (len == PAGE_SIZE-1) { - buf[len] = '\0'; - mconsole_reply(req, buf, 0, 1); - } else { - buf[len] = '\0'; - mconsole_reply(req, buf, 0, 0); - break; - } - } - + buf[len] = '\0'; + mconsole_reply(req, buf, 0, (len > 0)); + } while (len > 0); out_free: kfree(buf); - out_close: - sys_close(fd); - out: - /* nothing */; + out_fput: + fput(file); + out: ; } #define UML_MCONSOLE_HELPTEXT \ |
