sysctl: s390 Use the compat_sys_sysctl

[~andy/linux] / arch / s390 / kernel / compat_linux.c

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 0debcec23a39b543798ac523b00f772b895223f4..fda1a8123f9b9562f61ac6535458c902df8b5c8e 100644 (file)
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -527,59 +527,6 @@ asmlinkage long sys32_sendfile64(int out_fd, int in_fd,
        return ret;
 }
 
-#ifdef CONFIG_SYSCTL_SYSCALL
-struct __sysctl_args32 {
-       u32 name;
-       int nlen;
-       u32 oldval;
-       u32 oldlenp;
-       u32 newval;
-       u32 newlen;
-       u32 __unused[4];
-};
-
-asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
-{
-       struct __sysctl_args32 tmp;
-       int error;
-       size_t oldlen;
-       size_t __user *oldlenp = NULL;
-       unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
-
-       if (copy_from_user(&tmp, args, sizeof(tmp)))
-               return -EFAULT;
-
-       if (tmp.oldval && tmp.oldlenp) {
-               /* Duh, this is ugly and might not work if sysctl_args
-                  is in read-only memory, but do_sysctl does indirectly
-                  a lot of uaccess in both directions and we'd have to
-                  basically copy the whole sysctl.c here, and
-                  glibc's __sysctl uses rw memory for the structure
-                  anyway.  */
-               if (get_user(oldlen, (u32 __user *)compat_ptr(tmp.oldlenp)) ||
-                   put_user(oldlen, (size_t __user *)addr))
-                       return -EFAULT;
-               oldlenp = (size_t __user *)addr;
-       }
-
-       lock_kernel();
-       error = do_sysctl(compat_ptr(tmp.name), tmp.nlen, compat_ptr(tmp.oldval),
-                         oldlenp, compat_ptr(tmp.newval), tmp.newlen);
-       unlock_kernel();
-       if (oldlenp) {
-               if (!error) {
-                       if (get_user(oldlen, (size_t __user *)addr) ||
-                           put_user(oldlen, (u32 __user *)compat_ptr(tmp.oldlenp)))
-                               error = -EFAULT;
-               }
-               if (copy_to_user(args->__unused, tmp.__unused,
-                                sizeof(tmp.__unused)))
-                       error = -EFAULT;
-       }
-       return error;
-}
-#endif
-
 struct stat64_emu31 {
        unsigned long long  st_dev;
        unsigned int    __pad1;