1/* Definitions for POSIX spawn interface. 2 Copyright (C) 2000, 2003, 2004, 2009 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, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20#ifndef _SPAWN_H 21#define _SPAWN_H 1 22 23#include <features.h> 24#include <sched.h> 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 points 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 points 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 */ 191