Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / futimesat.c

diff --git a/sysdeps/unix/sysv/linux/futimesat.c b/sysdeps/unix/sysv/linux/futimesat.c
index 2fdedb0ff450e95991701d1be686a52d42cdcfd6..5039927b148debbafadaa0ae3142d553b42bd107 100644 (file)
--- a/sysdeps/unix/sysv/linux/futimesat.c
+++ b/sysdeps/unix/sysv/linux/futimesat.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* futimesat -- Change access and modification times of file.  Linux version.
+   Copyright (C) 2005-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -12,86 +13,27 @@
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stddef.h>
 #include <stdio.h>
+#include <string.h>
 #include <utime.h>
 #include <sys/time.h>
 #include <sysdep.h>
-#include "kernel-features.h"
 
 
 /* Change the access time of FILE relative to FD to TVP[0] and
    the modification time of FILE to TVP[1].  */
 int
-futimesat (fd, file, tvp)
-     int fd;
-     const char *file;
-     const struct timeval tvp[2];
+futimesat (int fd, const char *file, const struct timeval tvp[2])
 {
-  char *buf = NULL;
+  if (file == NULL)
+    return __futimes (fd, tvp);
 
-  if (fd != AT_FDCWD && file[0] != '/')
-    {
-      size_t filelen = strlen (file);
-      static const char procfd[] = "/proc/self/fd/%d/%s";
-      /* Buffer for the path name we are going to use.  It consists of
-        - the string /proc/self/fd/
-        - the file descriptor number
-        - the file name provided.
-        The final NUL is included in the sizeof.   A bit of overhead
-        due to the format elements compensates for possible negative
-        numbers.  */
-      size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen;
-      buf = alloca (buflen);
-
-      __snprintf (buf, buflen, procfd, fd, file);
-      file = buf;
-    }
-
-  int result;
-  INTERNAL_SYSCALL_DECL (err);
-
-#ifdef __NR_utimes
-  result = INTERNAL_SYSCALL (utimes, err, 2, file, tvp);
-  if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
-    return result;
-
-# ifndef __ASSUME_UTIMES
-  if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
-    goto fail;
-# endif
-#endif
-
-  /* The utimes() syscall does not exist or is not available in the
-     used kernel.  Use utime().  For this we have to convert to the
-     data format utime() expects.  */
-#ifndef __ASSUME_UTIMES
-  struct utimbuf tmp;
-  struct utimbuf *times;
-
-  if (tvp != NULL)
-    {
-      times = &tmp;
-      tmp.actime = tvp[0].tv_sec + tvp[0].tv_usec / 1000000;
-      tmp.modtime = tvp[1].tv_sec + tvp[1].tv_usec / 1000000;
-    }
-  else
-    times = NULL;
-
-  result = INTERNAL_SYSCALL (utime, err, 2, file, times);
-  if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
-    return result;
-
- fail:
-#endif
-
-  __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
-
-  return -1;
+  /* Avoid implicit array coercion in syscall macros.  */
+  return INLINE_SYSCALL (futimesat, 3, fd, file, &tvp[0]);
 }