1 /* Internal definitions for posix_spawn functionality.
2    Copyright (C) 2000-2021 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   } tag;
38 
39   union
40   {
41     struct
42     {
43       int fd;
44     } close_action;
45     struct
46     {
47       int fd;
48       int newfd;
49     } dup2_action;
50     struct
51     {
52       int fd;
53       char *path;
54       int oflag;
55       mode_t mode;
56     } open_action;
57     struct
58     {
59       char *path;
60     } chdir_action;
61     struct
62     {
63       int fd;
64     } fchdir_action;
65     struct
66     {
67       int from;
68     } closefrom_action;
69   } action;
70 };
71 
72 #define SPAWN_XFLAGS_USE_PATH	0x1
73 #define SPAWN_XFLAGS_TRY_SHELL	0x2
74 
75 extern int __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *
76 					       file_actions)
77      attribute_hidden;
78 
79 extern int __spawni (pid_t *pid, const char *path,
80 		     const posix_spawn_file_actions_t *file_actions,
81 		     const posix_spawnattr_t *attrp, char *const argv[],
82 		     char *const envp[], int xflags) attribute_hidden;
83 
84 /* Return true if FD falls into the range valid for file descriptors.
85    The check in this form is mandated by POSIX.  */
86 bool __spawn_valid_fd (int fd) attribute_hidden;
87 
88 #endif /* _SPAWN_INT_H */
89