[S390] Convert sys_execve to function with parameters.

Use function parameters instead of accessing the pt_regs structure
to get the parameters.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 13 insertions, 17 deletions

diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 189d978f76d6..59fe6ecc6ed3 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -32,6 +32,7 @@
 #include <linux/elfcore.h>
 #include <linux/kernel_stat.h>
 #include <linux/syscalls.h>
+#include <linux/compat.h>
 #include <asm/compat.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -268,30 +269,25 @@ asmlinkage void execve_tail(void)
 /*
  * sys_execve() executes a new program.
  */
-SYSCALL_DEFINE0(execve)
+SYSCALL_DEFINE3(execve, char __user *, name, char __user * __user *, argv,
+                char __user * __user *, envp)
 {
         struct pt_regs *regs = task_pt_regs(current);
         char *filename;
-        unsigned long result;
-        int rc;
+        long rc;
 
-        filename = getname((char __user *) regs->orig_gpr2);
-        if (IS_ERR(filename)) {
-                result = PTR_ERR(filename);
+        filename = getname(name);
+        rc = PTR_ERR(filename);
+        if (IS_ERR(filename))
+                return rc;
+        rc = do_execve(filename, argv, envp, regs);
+        if (rc)
                 goto out;
-        }
-        rc = do_execve(filename, (char __user * __user *) regs->gprs[3],
-                       (char __user * __user *) regs->gprs[4], regs);
-        if (rc) {
-                result = rc;
-                goto out_putname;
-        }
         execve_tail();
-        result = regs->gprs[2];
-out_putname:
-        putname(filename);
+        rc = regs->gprs[2];
 out:
-        return result;
+        putname(filename);
+        return rc;
 }
 
 /*