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glibc/posix/spawn.h
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/* Definitions for POSIX spawn interface. | |
Copyright (C) 2000,2003,2004,2009,2011,2012 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#ifndef _SPAWN_H | |
#define _SPAWN_H 1 | |
#include <features.h> | |
#include <sched.h> | |
#define __need_sigset_t | |
#include <signal.h> | |
#include <sys/types.h> | |
/* Data structure to contain attributes for thread creation. */ | |
typedef struct | |
{ | |
short int __flags; | |
pid_t __pgrp; | |
sigset_t __sd; | |
sigset_t __ss; | |
struct sched_param __sp; | |
int __policy; | |
int __pad[16]; | |
} posix_spawnattr_t; | |
/* Data structure to contain information about the actions to be | |
performed in the new process with respect to file descriptors. */ | |
typedef struct | |
{ | |
int __allocated; | |
int __used; | |
struct __spawn_action *__actions; | |
int __pad[16]; | |
} posix_spawn_file_actions_t; | |
/* Flags to be set in the `posix_spawnattr_t'. */ | |
#define POSIX_SPAWN_RESETIDS 0x01 | |
#define POSIX_SPAWN_SETPGROUP 0x02 | |
#define POSIX_SPAWN_SETSIGDEF 0x04 | |
#define POSIX_SPAWN_SETSIGMASK 0x08 | |
#define POSIX_SPAWN_SETSCHEDPARAM 0x10 | |
#define POSIX_SPAWN_SETSCHEDULER 0x20 | |
#ifdef __USE_GNU | |
# define POSIX_SPAWN_USEVFORK 0x40 | |
#endif | |
__BEGIN_DECLS | |
/* Spawn a new process executing PATH with the attributes describes in *ATTRP. | |
Before running the process perform the actions described in FILE-ACTIONS. | |
This function is a possible cancellation point and therefore not | |
marked with __THROW. */ | |
extern int posix_spawn (pid_t *__restrict __pid, | |
const char *__restrict __path, | |
const posix_spawn_file_actions_t *__restrict | |
__file_actions, | |
const posix_spawnattr_t *__restrict __attrp, | |
char *const __argv[__restrict_arr], | |
char *const __envp[__restrict_arr]); | |
/* Similar to `posix_spawn' but search for FILE in the PATH. | |
This function is a possible cancellation point and therefore not | |
marked with __THROW. */ | |
extern int posix_spawnp (pid_t *__pid, const char *__file, | |
const posix_spawn_file_actions_t *__file_actions, | |
const posix_spawnattr_t *__attrp, | |
char *const __argv[], char *const __envp[]); | |
/* Initialize data structure with attributes for `spawn' to default values. */ | |
extern int posix_spawnattr_init (posix_spawnattr_t *__attr) __THROW; | |
/* Free resources associated with ATTR. */ | |
extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) __THROW; | |
/* Store signal mask for signals with default handling from ATTR in | |
SIGDEFAULT. */ | |
extern int posix_spawnattr_getsigdefault (const posix_spawnattr_t * | |
__restrict __attr, | |
sigset_t *__restrict __sigdefault) | |
__THROW; | |
/* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */ | |
extern int posix_spawnattr_setsigdefault (posix_spawnattr_t *__restrict __attr, | |
const sigset_t *__restrict | |
__sigdefault) | |
__THROW; | |
/* Store signal mask for the new process from ATTR in SIGMASK. */ | |
extern int posix_spawnattr_getsigmask (const posix_spawnattr_t *__restrict | |
__attr, | |
sigset_t *__restrict __sigmask) __THROW; | |
/* Set signal mask for the new process in ATTR to SIGMASK. */ | |
extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__restrict __attr, | |
const sigset_t *__restrict __sigmask) | |
__THROW; | |
/* Get flag word from the attribute structure. */ | |
extern int posix_spawnattr_getflags (const posix_spawnattr_t *__restrict | |
__attr, | |
short int *__restrict __flags) __THROW; | |
/* Store flags in the attribute structure. */ | |
extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr, | |
short int __flags) __THROW; | |
/* Get process group ID from the attribute structure. */ | |
extern int posix_spawnattr_getpgroup (const posix_spawnattr_t *__restrict | |
__attr, pid_t *__restrict __pgroup) | |
__THROW; | |
/* Store process group ID in the attribute structure. */ | |
extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr, | |
pid_t __pgroup) __THROW; | |
/* Get scheduling policy from the attribute structure. */ | |
extern int posix_spawnattr_getschedpolicy (const posix_spawnattr_t * | |
__restrict __attr, | |
int *__restrict __schedpolicy) | |
__THROW; | |
/* Store scheduling policy in the attribute structure. */ | |
extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr, | |
int __schedpolicy) __THROW; | |
/* Get scheduling parameters from the attribute structure. */ | |
extern int posix_spawnattr_getschedparam (const posix_spawnattr_t * | |
__restrict __attr, | |
struct sched_param *__restrict | |
__schedparam) __THROW; | |
/* Store scheduling parameters in the attribute structure. */ | |
extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr, | |
const struct sched_param * | |
__restrict __schedparam) __THROW; | |
/* Initialize data structure for file attribute for `spawn' call. */ | |
extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t * | |
__file_actions) __THROW; | |
/* Free resources associated with FILE-ACTIONS. */ | |
extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t * | |
__file_actions) __THROW; | |
/* Add an action to FILE-ACTIONS which tells the implementation to call | |
`open' for the given file during the `spawn' call. */ | |
extern int posix_spawn_file_actions_addopen (posix_spawn_file_actions_t * | |
__restrict __file_actions, | |
int __fd, | |
const char *__restrict __path, | |
int __oflag, mode_t __mode) | |
__THROW; | |
/* Add an action to FILE-ACTIONS which tells the implementation to call | |
`close' for the given file descriptor during the `spawn' call. */ | |
extern int posix_spawn_file_actions_addclose (posix_spawn_file_actions_t * | |
__file_actions, int __fd) | |
__THROW; | |
/* Add an action to FILE-ACTIONS which tells the implementation to call | |
`dup2' for the given file descriptors during the `spawn' call. */ | |
extern int posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t * | |
__file_actions, | |
int __fd, int __newfd) __THROW; | |
__END_DECLS | |
#endif /* spawn.h */ |