1  /* Internal definitions for posix_spawn functionality.
       2     Copyright (C) 2000-2023 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  #ifndef _SPAWN_INT_H
      20  #define _SPAWN_INT_H
      21  
      22  #include <spawn.h>
      23  #include <spawn_int_def.h>
      24  #include <stdbool.h>
      25  
      26  /* Data structure to contain the action information.  */
      27  struct __spawn_action
      28  {
      29    enum
      30    {
      31      spawn_do_close,
      32      spawn_do_dup2,
      33      spawn_do_open,
      34      spawn_do_chdir,
      35      spawn_do_fchdir,
      36      spawn_do_closefrom,
      37      spawn_do_tcsetpgrp
      38    } tag;
      39  
      40    union
      41    {
      42      struct
      43      {
      44        int fd;
      45      } close_action;
      46      struct
      47      {
      48        int fd;
      49        int newfd;
      50      } dup2_action;
      51      struct
      52      {
      53        int fd;
      54        char *path;
      55        int oflag;
      56        mode_t mode;
      57      } open_action;
      58      struct
      59      {
      60        char *path;
      61      } chdir_action;
      62      struct
      63      {
      64        int fd;
      65      } fchdir_action;
      66      struct
      67      {
      68        int from;
      69      } closefrom_action;
      70      struct
      71      {
      72        int fd;
      73      } setpgrp_action;
      74    } action;
      75  };
      76  
      77  #define SPAWN_XFLAGS_USE_PATH	0x1
      78  #define SPAWN_XFLAGS_TRY_SHELL	0x2
      79  
      80  extern int __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *
      81  					       file_actions)
      82       attribute_hidden;
      83  
      84  extern int __spawni (pid_t *pid, const char *path,
      85  		     const posix_spawn_file_actions_t *file_actions,
      86  		     const posix_spawnattr_t *attrp, char *const argv[],
      87  		     char *const envp[], int xflags) attribute_hidden;
      88  
      89  /* Return true if FD falls into the range valid for file descriptors.
      90     The check in this form is mandated by POSIX.  */
      91  bool __spawn_valid_fd (int fd) attribute_hidden;
      92  
      93  #endif /* _SPAWN_INT_H */