1  /* Manipulate file descriptor.  Linux LFS version.
       2     Copyright (C) 2018-2023 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  #define fcntl __no_decl_fcntl
      20  #define __fcntl __no_decl___fcntl
      21  #include <fcntl.h>
      22  #undef fcntl
      23  #undef __fcntl
      24  #include <stdarg.h>
      25  #include <errno.h>
      26  #include <sysdep-cancel.h>
      27  
      28  #ifndef __NR_fcntl64
      29  # define __NR_fcntl64 __NR_fcntl
      30  #endif
      31  
      32  #ifndef FCNTL_ADJUST_CMD
      33  # define FCNTL_ADJUST_CMD(__cmd) __cmd
      34  #endif
      35  
      36  int
      37  __libc_fcntl64 (int fd, int cmd, ...)
      38  {
      39    va_list ap;
      40    void *arg;
      41  
      42    va_start (ap, cmd);
      43    arg = va_arg (ap, void *);
      44    va_end (ap);
      45  
      46    cmd = FCNTL_ADJUST_CMD (cmd);
      47  
      48    if (cmd == F_SETLKW || cmd == F_SETLKW64 || cmd == F_OFD_SETLKW)
      49      return SYSCALL_CANCEL (fcntl64, fd, cmd, arg);
      50  
      51    return __fcntl64_nocancel_adjusted (fd, cmd, arg);
      52  }
      53  libc_hidden_def (__libc_fcntl64)
      54  weak_alias (__libc_fcntl64, __fcntl64)
      55  libc_hidden_weak (__fcntl64)
      56  weak_alias (__libc_fcntl64, fcntl64)
      57  #if __TIMESIZE != 64
      58  weak_alias (__libc_fcntl64, __fcntl_time64)
      59  #endif
      60  
      61  #ifdef __OFF_T_MATCHES_OFF64_T
      62  weak_alias (__libc_fcntl64, __libc_fcntl)
      63  weak_alias (__libc_fcntl64, __fcntl)
      64  weak_alias (__libc_fcntl64, __GI___fcntl)
      65  weak_alias (__libc_fcntl64, fcntl)
      66  #endif