1 /* Definitions for POSIX spawn interface.
2 Copyright (C) 2000,2003,2004,2009,2011,2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
24 #define __need_sigset_t
26 #include <sys/types.h>
29 /* Data structure to contain attributes for thread creation. */
36 struct sched_param __sp;
42 /* Data structure to contain information about the actions to be
43 performed in the new process with respect to file descriptors. */
48 struct __spawn_action *__actions;
50 } posix_spawn_file_actions_t;
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
61 # define POSIX_SPAWN_USEVFORK 0x40
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.
70 This function is a possible cancellation point and therefore not
71 marked with __THROW. */
72 extern int posix_spawn (pid_t *__restrict __pid,
73 const char *__restrict __path,
74 const posix_spawn_file_actions_t *__restrict
76 const posix_spawnattr_t *__restrict __attrp,
77 char *const __argv[__restrict_arr],
78 char *const __envp[__restrict_arr]);
80 /* Similar to `posix_spawn' but search for FILE in the PATH.
82 This function is a possible cancellation point and therefore not
83 marked with __THROW. */
84 extern 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[]);
90 /* Initialize data structure with attributes for `spawn' to default values. */
91 extern int posix_spawnattr_init (posix_spawnattr_t *__attr) __THROW;
93 /* Free resources associated with ATTR. */
94 extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) __THROW;
96 /* Store signal mask for signals with default handling from ATTR in
98 extern int posix_spawnattr_getsigdefault (const posix_spawnattr_t *
100 sigset_t *__restrict __sigdefault)
103 /* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */
104 extern int posix_spawnattr_setsigdefault (posix_spawnattr_t *__restrict __attr,
105 const sigset_t *__restrict
109 /* Store signal mask for the new process from ATTR in SIGMASK. */
110 extern int posix_spawnattr_getsigmask (const posix_spawnattr_t *__restrict
112 sigset_t *__restrict __sigmask) __THROW;
114 /* Set signal mask for the new process in ATTR to SIGMASK. */
115 extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__restrict __attr,
116 const sigset_t *__restrict __sigmask)
119 /* Get flag word from the attribute structure. */
120 extern int posix_spawnattr_getflags (const posix_spawnattr_t *__restrict
122 short int *__restrict __flags) __THROW;
124 /* Store flags in the attribute structure. */
125 extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr,
126 short int __flags) __THROW;
128 /* Get process group ID from the attribute structure. */
129 extern int posix_spawnattr_getpgroup (const posix_spawnattr_t *__restrict
130 __attr, pid_t *__restrict __pgroup)
133 /* Store process group ID in the attribute structure. */
134 extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr,
135 pid_t __pgroup) __THROW;
137 /* Get scheduling policy from the attribute structure. */
138 extern int posix_spawnattr_getschedpolicy (const posix_spawnattr_t *
140 int *__restrict __schedpolicy)
143 /* Store scheduling policy in the attribute structure. */
144 extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr,
145 int __schedpolicy) __THROW;
147 /* Get scheduling parameters from the attribute structure. */
148 extern int posix_spawnattr_getschedparam (const posix_spawnattr_t *
150 struct sched_param *__restrict
151 __schedparam) __THROW;
153 /* Store scheduling parameters in the attribute structure. */
154 extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr,
155 const struct sched_param *
156 __restrict __schedparam) __THROW;
159 /* Initialize data structure for file attribute for `spawn' call. */
160 extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
161 __file_actions) __THROW;
163 /* Free resources associated with FILE-ACTIONS. */
164 extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t *
165 __file_actions) __THROW;
167 /* Add an action to FILE-ACTIONS which tells the implementation to call
168 `open' for the given file during the `spawn' call. */
169 extern int posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *
170 __restrict __file_actions,
172 const char *__restrict __path,
173 int __oflag, mode_t __mode)
176 /* Add an action to FILE-ACTIONS which tells the implementation to call
177 `close' for the given file descriptor during the `spawn' call. */
178 extern int posix_spawn_file_actions_addclose (posix_spawn_file_actions_t *
179 __file_actions, int __fd)
182 /* Add an action to FILE-ACTIONS which tells the implementation to call
183 `dup2' for the given file descriptors during the `spawn' call. */
184 extern int posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t *
186 int __fd, int __newfd) __THROW;