sysdeps/unix/sysv/linux/i386/sync_file_range.c

   1 /* Selective file content synch'ing.
   2    Copyright (C) 2006-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <fcntl.h>
  21 #include <sysdep-cancel.h>
  22
  23
  24 extern int __call_sync_file_range (int fd, off64_t offset, off64_t nbytes,
  25                                    unsigned int flags)
  26      attribute_hidden;
  27
  28
  29 int
  30 sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
  31 {
  32   if (SINGLE_THREAD_P)
  33     return __call_sync_file_range (fd, from, to, flags);
  34
  35   int result;
  36   int oldtype = LIBC_CANCEL_ASYNC ();
  37
  38   result = __call_sync_file_range (fd, from, to, flags);
  39
  40   LIBC_CANCEL_RESET (oldtype);
  41
  42   return result;
  43 }