sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c

   1 /* Copyright (C) 1997-2013 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   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 <assert.h>
  20 #include <errno.h>
  21 #include <unistd.h>
  22
  23 #include <sysdep-cancel.h>
  24 #include <sys/syscall.h>
  25 #include <bp-checks.h>
  26
  27 #include <kernel-features.h>
  28
  29
  30 /* Consider moving to syscalls.list.  */
  31
  32 ssize_t
  33 __libc_pwrite (fd, buf, count, offset)
  34      int fd;
  35      const void *buf;
  36      size_t count;
  37      off_t offset;
  38 {
  39   ssize_t result;
  40
  41   if (SINGLE_THREAD_P)
  42     {
  43       result = INLINE_SYSCALL (pwrite, 4, fd, CHECK_N (buf, count), count,
  44                               offset);
  45
  46       return result;
  47     }
  48
  49   int oldtype = LIBC_CANCEL_ASYNC ();
  50
  51   result = INLINE_SYSCALL (pwrite, 4, fd, CHECK_N (buf, count), count,
  52                                              offset);
  53
  54   LIBC_CANCEL_RESET (oldtype);
  55
  56   return result;
  57 }
  58
  59 strong_alias (__libc_pwrite, __pwrite)
  60 weak_alias (__libc_pwrite, pwrite)