sysdeps/unix/sysv/linux/tst-spawn-pidfd.h

   1 /* Tests for spawn pidfd extension.
   2    Copyright (C) 2023-2024 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 <errno.h>
  20 #include <spawn.h>
  21 #include <support/check.h>
  22
  23 #define PID_T_TYPE int
  24
  25 /* Call posix_spawn with POSIX_SPAWN_PIDFD set.  */
  26 static inline int
  27 pidfd_spawn_check (int *pidfd, const char *path,
  28                    const posix_spawn_file_actions_t *fa,
  29                    const posix_spawnattr_t *attr, char *const argv[],
  30                    char *const envp[])
  31 {
  32   int r = pidfd_spawn (pidfd, path, fa, attr, argv, envp);
  33   if (r == ENOSYS)
  34     FAIL_UNSUPPORTED ("kernel does not support CLONE_PIDFD clone flag");
  35   return r;
  36 }
  37
  38 #define POSIX_SPAWN(__pidfd, __path, __actions, __attr, __argv, __envp)      \
  39   pidfd_spawn_check (__pidfd, __path, __actions, __attr, __argv, __envp)
  40
  41 static inline int
  42 pidfd_spawnp_check (int *pidfd, const char *file,
  43                     const posix_spawn_file_actions_t *fa,
  44                     const posix_spawnattr_t *attr,
  45                     char *const argv[], char *const envp[])
  46 {
  47   int r = pidfd_spawnp (pidfd, file, fa, attr, argv, envp);
  48   if (r == ENOSYS)
  49     FAIL_UNSUPPORTED ("kernel does not support CLONE_PIDFD clone flag");
  50   return r;
  51 }
  52
  53 #define POSIX_SPAWNP(__child, __path, __actions, __attr, __argv, __envp) \
  54   pidfd_spawnp_check (__child, __path, __actions, __attr, __argv, __envp)
  55
  56 #define WAITID(__idtype, __id, __info, __opts)                               \
  57   ({                                                                         \
  58      __typeof (__idtype) __new_idtype = __idtype == P_PID                    \
  59                                         ? P_PIDFD : __idtype;                \
  60      waitid (__new_idtype, __id, __info, __opts);                            \
  61   })
  62
  63 #define TST_SPAWN_PIDFD 1