[PATCH 1/3] lutimesat: simplify utime(2)

[Alexey Dobriyan]

Rewrite via do_utimes() like compat_sys_utime().

Signed-off-by: Alexey Dobriyan <[EMAIL PROTECTED]>
---

 fs/utimes.c |   50 +++++++-------------------------------------------
 1 file changed, 7 insertions(+), 43 deletions(-)

--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -22,52 +22,16 @@ #ifdef __ARCH_WANT_SYS_UTIME
  */
 asmlinkage long sys_utime(char __user * filename, struct utimbuf __user * 
times)
 {
-       int error;
-       struct nameidata nd;
-       struct inode * inode;
-       struct iattr newattrs;
+       struct timeval tv[2];
 
-       error = user_path_walk(filename, &nd);
-       if (error)
-               goto out;
-       inode = nd.dentry->d_inode;
-
-       error = -EROFS;
-       if (IS_RDONLY(inode))
-               goto dput_and_out;
-
-       /* Don't worry, the checks are done in inode_change_ok() */
-       newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME;
        if (times) {
-               error = -EPERM;
-               if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
-                       goto dput_and_out;
-
-               error = get_user(newattrs.ia_atime.tv_sec, &times->actime);
-               newattrs.ia_atime.tv_nsec = 0;
-               if (!error)
-                       error = get_user(newattrs.ia_mtime.tv_sec, 
&times->modtime);
-               newattrs.ia_mtime.tv_nsec = 0;
-               if (error)
-                       goto dput_and_out;
-
-               newattrs.ia_valid |= ATTR_ATIME_SET | ATTR_MTIME_SET;
-       } else {
-                error = -EACCES;
-                if (IS_IMMUTABLE(inode))
-                        goto dput_and_out;
-
-               if (current->fsuid != inode->i_uid &&
-                   (error = vfs_permission(&nd, MAY_WRITE)) != 0)
-                       goto dput_and_out;
+               if (get_user(tv[0].tv_sec, &times->actime) ||
+                   get_user(tv[1].tv_sec, &times->modtime))
+                       return -EFAULT;
+               tv[0].tv_usec = 0;
+               tv[1].tv_usec = 0;
        }
-       mutex_lock(&inode->i_mutex);
-       error = notify_change(nd.dentry, &newattrs);
-       mutex_unlock(&inode->i_mutex);
-dput_and_out:
-       path_release(&nd);
-out:
-       return error;
+       return do_utimes(AT_FDCWD, filename, times ? tv : NULL);
 }
 
 #endif

-
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