1  /* Linux open syscall implementation, LFS.
       2     Copyright (C) 1991-2023 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  #include <sysdep-cancel.h>
      24  #include <shlib-compat.h>
      25  
      26  /* Open FILE with access OFLAG.  If O_CREAT or O_TMPFILE is in OFLAG,
      27     a third argument is the file protection.  */
      28  int
      29  __libc_open64 (const char *file, int oflag, ...)
      30  {
      31    int mode = 0;
      32  
      33    if (__OPEN_NEEDS_MODE (oflag))
      34      {
      35        va_list arg;
      36        va_start (arg, oflag);
      37        mode = va_arg (arg, int);
      38        va_end (arg);
      39      }
      40  
      41    return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag | O_LARGEFILE,
      42  			 mode);
      43  }
      44  
      45  strong_alias (__libc_open64, __open64)
      46  libc_hidden_weak (__open64)
      47  weak_alias (__libc_open64, open64)
      48  
      49  #ifdef __OFF_T_MATCHES_OFF64_T
      50  strong_alias (__libc_open64, __libc_open)
      51  strong_alias (__libc_open64, __open)
      52  libc_hidden_weak (__open)
      53  weak_alias (__libc_open64, open)
      54  #endif
      55  
      56  #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1, GLIBC_2_2)
      57  compat_symbol (libc, __libc_open64, open64, GLIBC_2_2);
      58  #endif