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192.168.1.100 / T106_DC / 840274949b51231d437658bd7f97c19a9b7fe8c2 / . / ap / libc / glibc / glibc-2.23 / posix / spawn.h
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xf.libdd93d52023-05-12 07:10:14 -0700[diff] [blame]1/* Definitions for POSIX spawn interface.
2 Copyright (C) 2000-2016 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_H
20#define _SPAWN_H 1
21
22#include <features.h>
23#include <sched.h>
24#define __need_sigset_t
25#include <signal.h>
26#include <sys/types.h>
27
28
29/* Data structure to contain attributes for thread creation. */
30typedef struct
31{
32 short int __flags;
33 pid_t __pgrp;
34 sigset_t __sd;
35 sigset_t __ss;
36 struct sched_param __sp;
37 int __policy;
38 int __pad[16];
39} posix_spawnattr_t;
40
41
42/* Data structure to contain information about the actions to be
43 performed in the new process with respect to file descriptors. */
44typedef struct
45{
46 int __allocated;
47 int __used;
48 struct __spawn_action *__actions;
49 int __pad[16];
50} posix_spawn_file_actions_t;
51
52
53/* Flags to be set in the `posix_spawnattr_t'. */
54#define POSIX_SPAWN_RESETIDS 0x01
55#define POSIX_SPAWN_SETPGROUP 0x02
56#define POSIX_SPAWN_SETSIGDEF 0x04
57#define POSIX_SPAWN_SETSIGMASK 0x08
58#define POSIX_SPAWN_SETSCHEDPARAM 0x10
59#define POSIX_SPAWN_SETSCHEDULER 0x20
60#ifdef __USE_GNU
61# define POSIX_SPAWN_USEVFORK 0x40
62#endif
63
64
65__BEGIN_DECLS
66
67/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
68 Before running the process perform the actions described in FILE-ACTIONS.
69
70 This function is a possible cancellation point and therefore not
71 marked with __THROW. */
72extern int posix_spawn (pid_t *__restrict __pid,
73 const char *__restrict __path,
74 const posix_spawn_file_actions_t *__restrict
75 __file_actions,
76 const posix_spawnattr_t *__restrict __attrp,
77 char *const __argv[__restrict_arr],
78 char *const __envp[__restrict_arr]);
79
80/* Similar to `posix_spawn' but search for FILE in the PATH.
81
82 This function is a possible cancellation point and therefore not
83 marked with __THROW. */
84extern int posix_spawnp (pid_t *__pid, const char *__file,
85 const posix_spawn_file_actions_t *__file_actions,
86 const posix_spawnattr_t *__attrp,
87 char *const __argv[], char *const __envp[]);
88
89
90/* Initialize data structure with attributes for `spawn' to default values. */
91extern int posix_spawnattr_init (posix_spawnattr_t *__attr) __THROW;
92
93/* Free resources associated with ATTR. */
94extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) __THROW;
95
96/* Store signal mask for signals with default handling from ATTR in
97 SIGDEFAULT. */
98extern int posix_spawnattr_getsigdefault (const posix_spawnattr_t *
99 __restrict __attr,
100 sigset_t *__restrict __sigdefault)
101 __THROW;
102
103/* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */
104extern int posix_spawnattr_setsigdefault (posix_spawnattr_t *__restrict __attr,
105 const sigset_t *__restrict
106 __sigdefault)
107 __THROW;
108
109/* Store signal mask for the new process from ATTR in SIGMASK. */
110extern int posix_spawnattr_getsigmask (const posix_spawnattr_t *__restrict
111 __attr,
112 sigset_t *__restrict __sigmask) __THROW;
113
114/* Set signal mask for the new process in ATTR to SIGMASK. */
115extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__restrict __attr,
116 const sigset_t *__restrict __sigmask)
117 __THROW;
118
119/* Get flag word from the attribute structure. */
120extern int posix_spawnattr_getflags (const posix_spawnattr_t *__restrict
121 __attr,
122 short int *__restrict __flags) __THROW;
123
124/* Store flags in the attribute structure. */
125extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr,
126 short int __flags) __THROW;
127
128/* Get process group ID from the attribute structure. */
129extern int posix_spawnattr_getpgroup (const posix_spawnattr_t *__restrict
130 __attr, pid_t *__restrict __pgroup)
131 __THROW;
132
133/* Store process group ID in the attribute structure. */
134extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr,
135 pid_t __pgroup) __THROW;
136
137/* Get scheduling policy from the attribute structure. */
138extern int posix_spawnattr_getschedpolicy (const posix_spawnattr_t *
139 __restrict __attr,
140 int *__restrict __schedpolicy)
141 __THROW;
142
143/* Store scheduling policy in the attribute structure. */
144extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr,
145 int __schedpolicy) __THROW;
146
147/* Get scheduling parameters from the attribute structure. */
148extern int posix_spawnattr_getschedparam (const posix_spawnattr_t *
149 __restrict __attr,
150 struct sched_param *__restrict
151 __schedparam) __THROW;
152
153/* Store scheduling parameters in the attribute structure. */
154extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr,
155 const struct sched_param *
156 __restrict __schedparam) __THROW;
157
158
159/* Initialize data structure for file attribute for `spawn' call. */
160extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
161 __file_actions) __THROW;
162
163/* Free resources associated with FILE-ACTIONS. */
164extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t *
165 __file_actions) __THROW;
166
167/* Add an action to FILE-ACTIONS which tells the implementation to call
168 `open' for the given file during the `spawn' call. */
169extern int posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *
170 __restrict __file_actions,
171 int __fd,
172 const char *__restrict __path,
173 int __oflag, mode_t __mode)
174 __THROW;
175
176/* Add an action to FILE-ACTIONS which tells the implementation to call
177 `close' for the given file descriptor during the `spawn' call. */
178extern int posix_spawn_file_actions_addclose (posix_spawn_file_actions_t *
179 __file_actions, int __fd)
180 __THROW;
181
182/* Add an action to FILE-ACTIONS which tells the implementation to call
183 `dup2' for the given file descriptors during the `spawn' call. */
184extern int posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t *
185 __file_actions,
186 int __fd, int __newfd) __THROW;
187
188__END_DECLS
189
190#endif /* spawn.h */