posix/spawn_int.h

   1 /* Internal definitions for posix_spawn functionality.
   2    Copyright (C) 2000-2018 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SPAWN_INT_H
  20 #define _SPAWN_INT_H
  21
  22 #include <spawn.h>
  23 #include <stdbool.h>
  24
  25 /* Data structure to contain the action information.  */
  26 struct __spawn_action
  27 {
  28   enum
  29   {
  30     spawn_do_close,
  31     spawn_do_dup2,
  32     spawn_do_open,
  33     spawn_do_chdir,
  34   } tag;
  35
  36   union
  37   {
  38     struct
  39     {
  40       int fd;
  41     } close_action;
  42     struct
  43     {
  44       int fd;
  45       int newfd;
  46     } dup2_action;
  47     struct
  48     {
  49       int fd;
  50       char *path;
  51       int oflag;
  52       mode_t mode;
  53     } open_action;
  54     struct
  55     {
  56       char *path;
  57     } chdir_action;
  58   } action;
  59 };
  60
  61 #define SPAWN_XFLAGS_USE_PATH   0x1
  62 #define SPAWN_XFLAGS_TRY_SHELL  0x2
  63
  64 extern int __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *
  65                                                file_actions)
  66      attribute_hidden;
  67
  68 extern int __spawni (pid_t *pid, const char *path,
  69                      const posix_spawn_file_actions_t *file_actions,
  70                      const posix_spawnattr_t *attrp, char *const argv[],
  71                      char *const envp[], int xflags) attribute_hidden;
  72
  73 /* Return true if FD falls into the range valid for file descriptors.
  74    The check in this form is mandated by POSIX.  */
  75 bool __spawn_valid_fd (int fd) attribute_hidden;
  76
  77 #endif /* _SPAWN_INT_H */