1  /* Linux open syscall implementation, non-LFS.
       2     Copyright (C) 2017-2023 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 <sysdep-cancel.h>
      25  
      26  #ifndef __OFF_T_MATCHES_OFF64_T
      27  
      28  /* Open FILE with access OFLAG.  If O_CREAT or O_TMPFILE is in OFLAG,
      29     a third argument is the file protection.  */
      30  int
      31  __libc_open (const char *file, int oflag, ...)
      32  {
      33    int mode = 0;
      34  
      35    if (__OPEN_NEEDS_MODE (oflag))
      36      {
      37        va_list arg;
      38        va_start (arg, oflag);
      39        mode = va_arg (arg, int);
      40        va_end (arg);
      41      }
      42  
      43    return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag, mode);
      44  }
      45  libc_hidden_def (__libc_open)
      46  
      47  weak_alias (__libc_open, __open)
      48  libc_hidden_weak (__open)
      49  weak_alias (__libc_open, open)
      50  #endif