sysdeps/unix/sysv/linux/open64_nocancel.c

   1 /* Linux open syscall implementation, LFS, non-cancellable.
   2    Copyright (C) 2018-2020 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <fcntl.h>
  22 #include <stdarg.h>
  23
  24 #include <not-cancel.h>
  25
  26 #ifdef __OFF_T_MATCHES_OFF64_T
  27 # define EXTRA_OPEN_FLAGS 0
  28 #else
  29 # define EXTRA_OPEN_FLAGS O_LARGEFILE
  30 #endif
  31
  32 int
  33 __open64_nocancel (const char *file, int oflag, ...)
  34 {
  35   int mode = 0;
  36
  37   if (__OPEN_NEEDS_MODE (oflag))
  38     {
  39       va_list arg;
  40       va_start (arg, oflag);
  41       mode = va_arg (arg, int);
  42       va_end (arg);
  43     }
  44
  45   return INLINE_SYSCALL_CALL (openat, AT_FDCWD, file, oflag | EXTRA_OPEN_FLAGS,
  46                               mode);
  47 }
  48
  49 hidden_def (__open64_nocancel)
  50
  51 #ifdef __OFF_T_MATCHES_OFF64_T
  52 strong_alias (__open64_nocancel, __open_nocancel)
  53 hidden_def (__open_nocancel)
  54 #endif