y2038: Compile utimes()/futimesat() conditionally

[linux-2.6-microblaze.git] / fs / utimes.c

diff --git a/fs/utimes.c b/fs/utimes.c
index d30f409..2f6f080 100644 (file)
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -8,35 +8,6 @@
 #include <linux/compat.h>
 #include <asm/unistd.h>
 
-#ifdef __ARCH_WANT_SYS_UTIME
-
-/*
- * sys_utime() can be implemented in user-level using sys_utimes().
- * Is this for backwards compatibility?  If so, why not move it
- * into the appropriate arch directory (for those architectures that
- * need it).
- */
-
-/* If times==NULL, set access and modification to current time,
- * must be owner or have write permission.
- * Else, update from *times, must be owner or super user.
- */
-SYSCALL_DEFINE2(utime, char __user *, filename, struct utimbuf __user *, times)
-{
-       struct timespec64 tv[2];
-
-       if (times) {
-               if (get_user(tv[0].tv_sec, &times->actime) ||
-                   get_user(tv[1].tv_sec, &times->modtime))
-                       return -EFAULT;
-               tv[0].tv_nsec = 0;
-               tv[1].tv_nsec = 0;
-       }
-       return do_utimes(AT_FDCWD, filename, times ? tv : NULL, 0);
-}
-
-#endif
-
 static bool nsec_valid(long nsec)
 {
        if (nsec == UTIME_OMIT || nsec == UTIME_NOW)
@@ -184,6 +155,13 @@ SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
        return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags);
 }
 
+#ifdef __ARCH_WANT_SYS_UTIME
+/*
+ * futimesat(), utimes() and utime() are older versions of utimensat()
+ * that are provided for compatibility with traditional C libraries.
+ * On modern architectures, we always use libc wrappers around
+ * utimensat() instead.
+ */
 static long do_futimesat(int dfd, const char __user *filename,
                         struct timeval __user *utimes)
 {
@@ -225,6 +203,21 @@ SYSCALL_DEFINE2(utimes, char __user *, filename,
        return do_futimesat(AT_FDCWD, filename, utimes);
 }
 
+SYSCALL_DEFINE2(utime, char __user *, filename, struct utimbuf __user *, times)
+{
+       struct timespec64 tv[2];
+
+       if (times) {
+               if (get_user(tv[0].tv_sec, &times->actime) ||
+                   get_user(tv[1].tv_sec, &times->modtime))
+                       return -EFAULT;
+               tv[0].tv_nsec = 0;
+               tv[1].tv_nsec = 0;
+       }
+       return do_utimes(AT_FDCWD, filename, times ? tv : NULL, 0);
+}
+#endif
+
 #ifdef CONFIG_COMPAT
 /*
  * Not all architectures have sys_utime, so implement this in terms