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

   1 /* Copyright (C) 2000-2016 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <assert.h>
  19 #include <errno.h>
  20 #include <sysdep-cancel.h>      /* Must come before <fcntl.h>.  */
  21 #include <fcntl.h>
  22 #include <stdarg.h>
  23
  24 #include <sys/syscall.h>
  25
  26
  27 #ifndef NO_CANCELLATION
  28 int
  29 __fcntl_nocancel (int fd, int cmd, ...)
  30 {
  31   va_list ap;
  32   void *arg;
  33
  34   va_start (ap, cmd);
  35   arg = va_arg (ap, void *);
  36   va_end (ap);
  37
  38   return INLINE_SYSCALL (fcntl, 3, fd, cmd, arg);
  39 }
  40 #endif
  41
  42
  43 int
  44 __libc_fcntl (int fd, int cmd, ...)
  45 {
  46   va_list ap;
  47   void *arg;
  48
  49   va_start (ap, cmd);
  50   arg = va_arg (ap, void *);
  51   va_end (ap);
  52
  53   if (cmd >= F_GETLK64 && cmd <= F_SETLKW64)
  54     cmd -= F_GETLK64 - F_GETLK;
  55
  56   if (cmd != F_SETLKW)
  57     return INLINE_SYSCALL (fcntl, 3, fd, cmd, arg);
  58
  59   return SYSCALL_CANCEL (fcntl, fd, cmd, arg);
  60 }
  61 libc_hidden_def (__libc_fcntl)
  62
  63 weak_alias (__libc_fcntl, __fcntl)
  64 libc_hidden_weak (__fcntl)
  65 weak_alias (__libc_fcntl, fcntl)