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

diff --git a/sysdeps/unix/sysv/linux/futimes.c b/sysdeps/unix/sysv/linux/futimes.c
index 913bd105fc3c0ac345f69b6abfcf6697cefb5e66..3576a9430edeaf05e2392fd74d028239c798a43d 100644 (file)
--- a/sysdeps/unix/sysv/linux/futimes.c
+++ b/sysdeps/unix/sysv/linux/futimes.c
@@ -1,5 +1,5 @@
 /* futimes -- change access and modification times of open file.  Linux version.
-   Copyright (C) 2002,2003,2005,2006,2007,2011 Free Software Foundation, Inc.
+   Copyright (C) 2002-2019 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
@@ -14,7 +14,7 @@
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
 #include <sysdep.h>
@@ -25,19 +25,12 @@
 #include <_itoa.h>
 #include <fcntl.h>
 
-#include <kernel-features.h>
-
-
-#if defined __NR_utimensat && !defined __ASSUME_UTIMENSAT
-static int miss_utimensat;
-#endif
 
 /* Change the access time of the file associated with FD to TVP[0] and
    the modification time of FILE to TVP[1].
 
    Starting with 2.6.22 the Linux kernel has the utimensat syscall which
-   can be used to implement futimes.  Earlier kernels have no futimes()
-   syscall so we use the /proc filesystem.  */
+   can be used to implement futimes.  */
 int
 __futimes (int fd, const struct timeval tvp[2])
 {
@@ -47,91 +40,12 @@ __futimes (int fd, const struct timeval tvp[2])
     {
       if (tvp[0].tv_usec < 0 || tvp[0].tv_usec >= 1000000
           || tvp[1].tv_usec < 0 || tvp[1].tv_usec >= 1000000)
-       {
-         __set_errno (EINVAL);
-         return -1;
-       }
+       return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
 
       TIMEVAL_TO_TIMESPEC (&tvp[0], &ts[0]);
       TIMEVAL_TO_TIMESPEC (&tvp[1], &ts[1]);
     }
 
-#ifdef __ASSUME_UTIMENSAT
   return INLINE_SYSCALL (utimensat, 4, fd, NULL, tvp ? &ts : NULL, 0);
-#else
-  int result;
-# ifdef __NR_utimensat
-  if (!__builtin_expect (miss_utimensat, 0))
-    {
-      result = INLINE_SYSCALL (utimensat, 4, fd, NULL, tvp ? &ts : NULL, 0);
-      if (__builtin_expect (result, 0) != -1 || errno != ENOSYS)
-       return result;
-
-      miss_utimensat = 1;
-    }
-# endif
-
-  static const char selffd[] = "/proc/self/fd/";
-  char fname[sizeof (selffd) + 3 * sizeof (int)];
-  fname[sizeof (fname) - 1] = '\0';
-  char *cp = _itoa_word ((unsigned int) fd, fname + sizeof (fname) - 1, 10, 0);
-  cp = memcpy (cp - sizeof (selffd) + 1, selffd, sizeof (selffd) - 1);
-
-# ifdef __NR_utimes
-  result = INLINE_SYSCALL (utimes, 2, cp, tvp);
-#  ifndef __ASSUME_UTIMES
-  if (result == -1 && errno == ENOSYS)
-#  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 buf;
-      struct utimbuf *times;
-
-      if (tvp != NULL)
-       {
-         times = &buf;
-         buf.actime = tvp[0].tv_sec;
-         buf.modtime = tvp[1].tv_sec;
-       }
-      else
-       times = NULL;
-
-      result = INLINE_SYSCALL (utime, 2, cp, times);
-# endif
-    }
-
-  if (result == -1)
-    /* Check for errors that result from failing to find /proc.
-       This means we can't do futimes at all, so return ENOSYS
-       rather than some confusing error.  */
-    switch (errno)
-      {
-      case EACCES:
-       if (tvp == NULL)  /* Could be a path problem or a file problem.  */
-         break;
-       /*FALLTHROUGH*/
-      case ELOOP:
-      case ENAMETOOLONG:
-      case ENOTDIR:
-       __set_errno (ENOSYS);
-       break;
-
-      case ENOENT:
-       /* Validate the file descriptor by letting fcntl set errno to
-          EBADF if it's bogus.  Otherwise it's a /proc issue.  */
-# if !defined __NR_fcntl && defined __NR_fcntl64
-#  define __NR_fcntl __NR_fcntl64
-# endif
-       if (INLINE_SYSCALL (fcntl, 3, fd, F_GETFD, 0) != -1)
-         __set_errno (ENOSYS);
-       break;
-      }
-
-  return result;
-#endif
 }
 weak_alias (__futimes, futimes)