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/>. */
25 #include <sys/types.h>
28 /* Data structure to contain attributes for thread creation. */
35 struct sched_param __sp;
41 /* Data structure to contain information about the actions to be
42 performed in the new process with respect to file descriptors. */
47 struct __spawn_action *__actions;
49 } posix_spawn_file_actions_t;
52 /* Flags to be set in the `posix_spawnattr_t'. */
53 #define POSIX_SPAWN_RESETIDS 0x01
54 #define POSIX_SPAWN_SETPGROUP 0x02
55 #define POSIX_SPAWN_SETSIGDEF 0x04
56 #define POSIX_SPAWN_SETSIGMASK 0x08
57 #define POSIX_SPAWN_SETSCHEDPARAM 0x10
58 #define POSIX_SPAWN_SETSCHEDULER 0x20
60 # define POSIX_SPAWN_USEVFORK 0x40
66 /* Spawn a new process executing PATH with the attributes describes in *ATTRP.
67 Before running the process perform the actions described in FILE-ACTIONS.
69 This function is a possible cancellation point and therefore not
70 marked with __THROW. */
71 extern int posix_spawn (pid_t *__restrict __pid,
72 const char *__restrict __path,
73 const posix_spawn_file_actions_t *__restrict
75 const posix_spawnattr_t *__restrict __attrp,
76 char *const __argv[__restrict_arr],
77 char *const __envp[__restrict_arr]);
79 /* Similar to `posix_spawn' but search for FILE in the PATH.
81 This function is a possible cancellation point and therefore not
82 marked with __THROW. */
83 extern int posix_spawnp (pid_t *__pid, const char *__file,
84 const posix_spawn_file_actions_t *__file_actions,
85 const posix_spawnattr_t *__attrp,
86 char *const __argv[], char *const __envp[]);
89 /* Initialize data structure with attributes for `spawn' to default values. */
90 extern int posix_spawnattr_init (posix_spawnattr_t *__attr) __THROW;
92 /* Free resources associated with ATTR. */
93 extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) __THROW;
95 /* Store signal mask for signals with default handling from ATTR in
97 extern int posix_spawnattr_getsigdefault (const posix_spawnattr_t *
99 sigset_t *__restrict __sigdefault)
102 /* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */
103 extern int posix_spawnattr_setsigdefault (posix_spawnattr_t *__restrict __attr,
104 const sigset_t *__restrict
108 /* Store signal mask for the new process from ATTR in SIGMASK. */
109 extern int posix_spawnattr_getsigmask (const posix_spawnattr_t *__restrict
111 sigset_t *__restrict __sigmask) __THROW;
113 /* Set signal mask for the new process in ATTR to SIGMASK. */
114 extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__restrict __attr,
115 const sigset_t *__restrict __sigmask)
118 /* Get flag word from the attribute structure. */
119 extern int posix_spawnattr_getflags (const posix_spawnattr_t *__restrict
121 short int *__restrict __flags) __THROW;
123 /* Store flags in the attribute structure. */
124 extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr,
125 short int __flags) __THROW;
127 /* Get process group ID from the attribute structure. */
128 extern int posix_spawnattr_getpgroup (const posix_spawnattr_t *__restrict
129 __attr, pid_t *__restrict __pgroup)
132 /* Store process group ID in the attribute structure. */
133 extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr,
134 pid_t __pgroup) __THROW;
136 /* Get scheduling policy from the attribute structure. */
137 extern int posix_spawnattr_getschedpolicy (const posix_spawnattr_t *
139 int *__restrict __schedpolicy)
142 /* Store scheduling policy in the attribute structure. */
143 extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr,
144 int __schedpolicy) __THROW;
146 /* Get scheduling parameters from the attribute structure. */
147 extern int posix_spawnattr_getschedparam (const posix_spawnattr_t *
149 struct sched_param *__restrict
150 __schedparam) __THROW;
152 /* Store scheduling parameters in the attribute structure. */
153 extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr,
154 const struct sched_param *
155 __restrict __schedparam) __THROW;
158 /* Initialize data structure for file attribute for `spawn' call. */
159 extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
160 __file_actions) __THROW;
162 /* Free resources associated with FILE-ACTIONS. */
163 extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t *
164 __file_actions) __THROW;
166 /* Add an action to FILE-ACTIONS which tells the implementation to call
167 `open' for the given file during the `spawn' call. */
168 extern int posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *
169 __restrict __file_actions,
171 const char *__restrict __path,
172 int __oflag, mode_t __mode)
175 /* Add an action to FILE-ACTIONS which tells the implementation to call
176 `close' for the given file descriptor during the `spawn' call. */
177 extern int posix_spawn_file_actions_addclose (posix_spawn_file_actions_t *
178 __file_actions, int __fd)
181 /* Add an action to FILE-ACTIONS which tells the implementation to call
182 `dup2' for the given file descriptors during the `spawn' call. */
183 extern int posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t *
185 int __fd, int __newfd) __THROW;