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The C and C++ Include Header Files
/usr/include/spawn.h
$ cat -n /usr/include/spawn.h 1 /* Definitions for POSIX spawn interface. 2 Copyright (C) 2000-2024 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 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _SPAWN_H 20 #define _SPAWN_H 1 21 22 #include <features.h> 23 #include <sched.h> 24 #include <sys/types.h> 25 #include <bits/types/sigset_t.h> 26 27 28 /* Data structure to contain attributes for thread creation. */ 29 typedef struct 30 { 31 short int __flags; 32 pid_t __pgrp; 33 sigset_t __sd; 34 sigset_t __ss; 35 struct sched_param __sp; 36 int __policy; 37 int __cgroup; 38 int __pad[15]; 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. */ 44 typedef 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 # define POSIX_SPAWN_SETSID 0x80 63 # define POSIX_SPAWN_SETCGROUP 0x100 64 #endif 65 66 67 __BEGIN_DECLS 68 69 /* Spawn a new process executing PATH with the attributes describes in *ATTRP. 70 Before running the process perform the actions described in FILE-ACTIONS. 71 72 This function is a possible cancellation point and therefore not 73 marked with __THROW. */ 74 extern int posix_spawn (pid_t *__restrict __pid, 75 const char *__restrict __path, 76 const posix_spawn_file_actions_t *__restrict 77 __file_actions, 78 const posix_spawnattr_t *__restrict __attrp, 79 char *const __argv[__restrict_arr], 80 char *const __envp[__restrict_arr]) 81 __nonnull ((2, 5)); 82 83 /* Similar to `posix_spawn' but search for FILE in the PATH. 84 85 This function is a possible cancellation point and therefore not 86 marked with __THROW. */ 87 extern int posix_spawnp (pid_t *__pid, const char *__file, 88 const posix_spawn_file_actions_t *__file_actions, 89 const posix_spawnattr_t *__attrp, 90 char *const __argv[], char *const __envp[]) 91 __nonnull ((2, 5)); 92 93 94 /* Initialize data structure with attributes for `spawn' to default values. */ 95 extern int posix_spawnattr_init (posix_spawnattr_t *__attr) 96 __THROW __nonnull ((1)); 97 98 /* Free resources associated with ATTR. */ 99 extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) 100 __THROW __nonnull ((1)); 101 102 /* Store signal mask for signals with default handling from ATTR in 103 SIGDEFAULT. */ 104 extern int posix_spawnattr_getsigdefault (const posix_spawnattr_t * 105 __restrict __attr, 106 sigset_t *__restrict __sigdefault) 107 __THROW __nonnull ((1, 2)); 108 109 /* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */ 110 extern int posix_spawnattr_setsigdefault (posix_spawnattr_t *__restrict __attr, 111 const sigset_t *__restrict 112 __sigdefault) 113 __THROW __nonnull ((1, 2)); 114 115 /* Store signal mask for the new process from ATTR in SIGMASK. */ 116 extern int posix_spawnattr_getsigmask (const posix_spawnattr_t *__restrict 117 __attr, 118 sigset_t *__restrict __sigmask) 119 __THROW __nonnull ((1, 2)); 120 121 /* Set signal mask for the new process in ATTR to SIGMASK. */ 122 extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__restrict __attr, 123 const sigset_t *__restrict __sigmask) 124 __THROW __nonnull ((1, 2)); 125 126 /* Get flag word from the attribute structure. */ 127 extern int posix_spawnattr_getflags (const posix_spawnattr_t *__restrict 128 __attr, 129 short int *__restrict __flags) 130 __THROW __nonnull ((1, 2)); 131 132 /* Store flags in the attribute structure. */ 133 extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr, 134 short int __flags) 135 __THROW __nonnull ((1)); 136 137 /* Get process group ID from the attribute structure. */ 138 extern int posix_spawnattr_getpgroup (const posix_spawnattr_t *__restrict 139 __attr, pid_t *__restrict __pgroup) 140 __THROW __nonnull ((1, 2)); 141 142 /* Store process group ID in the attribute structure. */ 143 extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr, 144 pid_t __pgroup) 145 __THROW __nonnull ((1)); 146 147 /* Get scheduling policy from the attribute structure. */ 148 extern int posix_spawnattr_getschedpolicy (const posix_spawnattr_t * 149 __restrict __attr, 150 int *__restrict __schedpolicy) 151 __THROW __nonnull ((1, 2)); 152 153 /* Store scheduling policy in the attribute structure. */ 154 extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr, 155 int __schedpolicy) 156 __THROW __nonnull ((1)); 157 158 /* Get scheduling parameters from the attribute structure. */ 159 extern int posix_spawnattr_getschedparam (const posix_spawnattr_t * 160 __restrict __attr, 161 struct sched_param *__restrict 162 __schedparam) 163 __THROW __nonnull ((1, 2)); 164 165 /* Store scheduling parameters in the attribute structure. */ 166 extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr, 167 const struct sched_param * 168 __restrict __schedparam) 169 __THROW __nonnull ((1, 2)); 170 171 /* Initialize data structure for file attribute for `spawn' call. */ 172 extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t * 173 __file_actions) 174 __THROW __nonnull ((1)); 175 176 /* Free resources associated with FILE-ACTIONS. */ 177 extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t * 178 __file_actions) 179 __THROW __nonnull ((1)); 180 181 /* Add an action to FILE-ACTIONS which tells the implementation to call 182 `open' for the given file during the `spawn' call. */ 183 extern int posix_spawn_file_actions_addopen (posix_spawn_file_actions_t * 184 __restrict __file_actions, 185 int __fd, 186 const char *__restrict __path, 187 int __oflag, mode_t __mode) 188 __THROW __nonnull ((1, 3)); 189 190 /* Add an action to FILE-ACTIONS which tells the implementation to call 191 `close' for the given file descriptor during the `spawn' call. */ 192 extern int posix_spawn_file_actions_addclose (posix_spawn_file_actions_t * 193 __file_actions, int __fd) 194 __THROW __nonnull ((1)); 195 196 /* Add an action to FILE-ACTIONS which tells the implementation to call 197 `dup2' for the given file descriptors during the `spawn' call. */ 198 extern int posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t * 199 __file_actions, 200 int __fd, int __newfd) 201 __THROW __nonnull ((1)); 202 203 #ifdef __USE_MISC 204 /* Add an action changing the directory to PATH during spawn. This 205 affects the subsequent file actions. */ 206 extern int posix_spawn_file_actions_addchdir_np (posix_spawn_file_actions_t * 207 __restrict __actions, 208 const char *__restrict __path) 209 __THROW __nonnull ((1, 2)); 210 211 /* Add an action changing the directory to FD during spawn. This 212 affects the subsequent file actions. FD is not duplicated and must 213 be open when the file action is executed. */ 214 extern int posix_spawn_file_actions_addfchdir_np (posix_spawn_file_actions_t *, 215 int __fd) 216 __THROW __nonnull ((1)); 217 218 /* Add an action to close all file descriptor greater than or equal to FROM 219 during spawn. This affects the subsequent file actions. */ 220 extern int 221 posix_spawn_file_actions_addclosefrom_np (posix_spawn_file_actions_t *, 222 int __from) 223 __THROW __nonnull ((1)); 224 225 /* Add an action to set the process group of the foreground process group 226 associated with the terminal TCFD. */ 227 extern int 228 posix_spawn_file_actions_addtcsetpgrp_np (posix_spawn_file_actions_t *, 229 int __tcfd) 230 __THROW __nonnull ((1)); 231 232 #endif /* __USE_MISC */ 233 234 __END_DECLS 235 236 #include <bits/spawn_ext.h> 237 238 #endif /* spawn.h */
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