1  /* Syscall wrapper that do not set errno.  Linux version.
       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 <sysdep.h>
      20  #include <fcntl.h>
      21  
      22  /* This function is used on maybe_enable_malloc_check (elf/dl-tunables.c)
      23     and to avoid having to build/use multiple versions if stack protection
      24     in enabled it is defined as inline.  */
      25  static inline int
      26  __access_noerrno (const char *pathname, int mode)
      27  {
      28    int res;
      29  #ifdef __NR_access
      30    res = INTERNAL_SYSCALL_CALL (access, pathname, mode);
      31  #else
      32    res = INTERNAL_SYSCALL_CALL (faccessat, AT_FDCWD, pathname, mode);
      33  #endif
      34    if (INTERNAL_SYSCALL_ERROR_P (res))
      35      return INTERNAL_SYSCALL_ERRNO (res);
      36    return 0;
      37  }
      38  
      39  static inline int
      40  __kill_noerrno (pid_t pid, int sig)
      41  {
      42    int res;
      43    res = INTERNAL_SYSCALL_CALL (kill, pid, sig);
      44    if (INTERNAL_SYSCALL_ERROR_P (res))
      45      return INTERNAL_SYSCALL_ERRNO (res);
      46    return 0;
      47  }