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-rw-r--r--arch/s390/include/asm/processor.h3
-rw-r--r--arch/s390/include/asm/unistd.h1
-rw-r--r--arch/s390/kernel/compat_linux.c26
-rw-r--r--arch/s390/kernel/compat_linux.h2
-rw-r--r--arch/s390/kernel/compat_wrapper.S2
-rw-r--r--arch/s390/kernel/entry.S3
-rw-r--r--arch/s390/kernel/entry.h3
-rw-r--r--arch/s390/kernel/entry64.S1
-rw-r--r--arch/s390/kernel/process.c25
9 files changed, 5 insertions, 61 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 11e4e32..0bc7761 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -32,6 +32,7 @@ static inline void get_cpu_id(struct cpuid *ptr)
extern void s390_adjust_jiffies(void);
extern const struct seq_operations cpuinfo_op;
extern int sysctl_ieee_emulation_warnings;
+extern void execve_tail(void);
/*
* User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit.
@@ -114,6 +115,7 @@ struct stack_frame {
regs->psw.mask = psw_user_bits | PSW_MASK_EA | PSW_MASK_BA; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->gprs[15] = new_stackp; \
+ execve_tail(); \
} while (0)
#define start_thread31(regs, new_psw, new_stackp) do { \
@@ -123,6 +125,7 @@ struct stack_frame {
__tlb_flush_mm(current->mm); \
crst_table_downgrade(current->mm, 1UL << 31); \
update_mm(current->mm, current); \
+ execve_tail(); \
} while (0)
/* Forward declaration, a strange C thing */
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 6756e78..9afacff 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -415,6 +415,7 @@
# define __ARCH_WANT_COMPAT_SYS_TIME
# define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
# endif
+#define __ARCH_WANT_SYS_EXECVE
/*
* "Conditional" syscalls
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index f606d93..d03d733 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -420,32 +420,6 @@ sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
return ret;
}
-/*
- * sys32_execve() executes a new program after the asm stub has set
- * things up for us. This should basically do what I want it to.
- */
-asmlinkage long sys32_execve(const char __user *name, compat_uptr_t __user *argv,
- compat_uptr_t __user *envp)
-{
- struct pt_regs *regs = task_pt_regs(current);
- char *filename;
- long rc;
-
- filename = getname(name);
- rc = PTR_ERR(filename);
- if (IS_ERR(filename))
- return rc;
- rc = compat_do_execve(filename, argv, envp, regs);
- if (rc)
- goto out;
- current->thread.fp_regs.fpc=0;
- asm volatile("sfpc %0,0" : : "d" (0));
- rc = regs->gprs[2];
-out:
- putname(filename);
- return rc;
-}
-
asmlinkage long sys32_pread64(unsigned int fd, char __user *ubuf,
size_t count, u32 poshi, u32 poslo)
{
diff --git a/arch/s390/kernel/compat_linux.h b/arch/s390/kernel/compat_linux.h
index 9635d75..5daff1d 100644
--- a/arch/s390/kernel/compat_linux.h
+++ b/arch/s390/kernel/compat_linux.h
@@ -193,8 +193,6 @@ long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
compat_sigset_t __user *oset, size_t sigsetsize);
long sys32_rt_sigpending(compat_sigset_t __user *set, size_t sigsetsize);
long sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo);
-long sys32_execve(const char __user *name, compat_uptr_t __user *argv,
- compat_uptr_t __user *envp);
long sys32_init_module(void __user *umod, unsigned long len,
const char __user *uargs);
long sys32_delete_module(const char __user *name_user, unsigned int flags);
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 2d82cfc..cf1d60f 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1576,7 +1576,7 @@ ENTRY(sys32_execve_wrapper)
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # compat_uptr_t *
llgtr %r4,%r4 # compat_uptr_t *
- jg sys32_execve # branch to system call
+ jg compat_sys_execve # branch to system call
ENTRY(sys_fanotify_init_wrapper)
llgfr %r2,%r2 # unsigned int
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 870bad6..6286985 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -368,8 +368,6 @@ ENTRY(kernel_execve)
l %r12,__LC_THREAD_INFO
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
ssm __LC_SVC_NEW_PSW # reenable interrupts
- l %r1,BASED(.Lexecve_tail)
- basr %r14,%r1 # call execve_tail
j sysc_return
/*
@@ -932,7 +930,6 @@ cleanup_idle_wait:
.Ldo_notify_resume: .long do_notify_resume
.Ldo_per_trap: .long do_per_trap
.Ldo_execve: .long do_execve
-.Lexecve_tail: .long execve_tail
.Ljump_table: .long pgm_check_table
.Lschedule: .long schedule
#ifdef CONFIG_PREEMPT
diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h
index a5f4dc4..d0d3f69 100644
--- a/arch/s390/kernel/entry.h
+++ b/arch/s390/kernel/entry.h
@@ -58,9 +58,6 @@ long sys_fork(void);
long sys_clone(unsigned long newsp, unsigned long clone_flags,
int __user *parent_tidptr, int __user *child_tidptr);
long sys_vfork(void);
-void execve_tail(void);
-long sys_execve(const char __user *name, const char __user *const __user *argv,
- const char __user *const __user *envp);
long sys_sigsuspend(int history0, int history1, old_sigset_t mask);
long sys_sigaction(int sig, const struct old_sigaction __user *act,
struct old_sigaction __user *oact);
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 349b7ee..1f776f2 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -386,7 +386,6 @@ ENTRY(kernel_execve)
lg %r12,__LC_THREAD_INFO
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
ssm __LC_SVC_NEW_PSW # reenable interrupts
- brasl %r14,execve_tail
j sysc_return
/*
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 7331753..e540251 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -250,31 +250,6 @@ asmlinkage void execve_tail(void)
}
/*
- * sys_execve() executes a new program.
- */
-SYSCALL_DEFINE3(execve, const char __user *, name,
- const char __user *const __user *, argv,
- const char __user *const __user *, envp)
-{
- struct pt_regs *regs = task_pt_regs(current);
- char *filename;
- long rc;
-
- filename = getname(name);
- rc = PTR_ERR(filename);
- if (IS_ERR(filename))
- return rc;
- rc = do_execve(filename, argv, envp, regs);
- if (rc)
- goto out;
- execve_tail();
- rc = regs->gprs[2];
-out:
- putname(filename);
- return rc;
-}
-
-/*
* fill in the FPU structure for a core dump.
*/
int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs)
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