/* Definitions for POSIX spawn interface.
- Copyright (C) 2000 Free Software Foundation, Inc.
+ Copyright (C) 2000-2019 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 Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
#ifndef _SPAWN_H
#define _SPAWN_H 1
#include <features.h>
#include <sched.h>
-#include <signal.h>
#include <sys/types.h>
+#include <bits/types/sigset_t.h>
/* Data structure to contain attributes for thread creation. */
#define POSIX_SPAWN_SETSIGMASK 0x08
#define POSIX_SPAWN_SETSCHEDPARAM 0x10
#define POSIX_SPAWN_SETSCHEDULER 0x20
+#ifdef __USE_GNU
+# define POSIX_SPAWN_USEVFORK 0x40
+# define POSIX_SPAWN_SETSID 0x80
+#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. */
-extern int posix_spawn (pid_t *__pid, __const char *__path,
- __const posix_spawn_file_actions_t *__file_actions,
- __const posix_spawnattr_t *__attrp,
- char *__const argv[], char *__const envp[]) __THROW;
-
-/* Similar to `posix_spawn' but search for FILE in the PATH. */
-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[]) __THROW;
+ 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])
+ __nonnull ((2, 5));
+
+/* 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[])
+ __nonnull ((2, 5));
/* Initialize data structure with attributes for `spawn' to default values. */
-extern int posix_spawnattr_init (posix_spawnattr_t *__attr) __THROW;
+extern int posix_spawnattr_init (posix_spawnattr_t *__attr)
+ __THROW __nonnull ((1));
/* Free resources associated with ATTR. */
-extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) __THROW;
+extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr)
+ __THROW __nonnull ((1));
/* Store signal mask for signals with default handling from ATTR in
SIGDEFAULT. */
-extern int posix_spawnattr_getdefault (__const posix_spawnattr_t *__attr,
- sigset_t *__sigdefault) __THROW;
+extern int posix_spawnattr_getsigdefault (const posix_spawnattr_t *
+ __restrict __attr,
+ sigset_t *__restrict __sigdefault)
+ __THROW __nonnull ((1, 2));
/* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */
-extern int posix_spawnattr_setdefault (posix_spawnattr_t *__attr,
- __const sigset_t *__sigdefault) __THROW;
+extern int posix_spawnattr_setsigdefault (posix_spawnattr_t *__restrict __attr,
+ const sigset_t *__restrict
+ __sigdefault)
+ __THROW __nonnull ((1, 2));
/* Store signal mask for the new process from ATTR in SIGMASK. */
-extern int posix_spawnattr_getsigmask (__const posix_spawnattr_t *__attr,
- sigset_t *__sigmask) __THROW;
+extern int posix_spawnattr_getsigmask (const posix_spawnattr_t *__restrict
+ __attr,
+ sigset_t *__restrict __sigmask)
+ __THROW __nonnull ((1, 2));
/* Set signal mask for the new process in ATTR to SIGMASK. */
-extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__attr,
- __const sigset_t *__sigmask) __THROW;
+extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__restrict __attr,
+ const sigset_t *__restrict __sigmask)
+ __THROW __nonnull ((1, 2));
/* Get flag word from the attribute structure. */
-extern int posix_spawnattr_getflags (__const posix_spawnattr_t *__attr,
- short int *__flags) __THROW;
+extern int posix_spawnattr_getflags (const posix_spawnattr_t *__restrict
+ __attr,
+ short int *__restrict __flags)
+ __THROW __nonnull ((1, 2));
/* Store flags in the attribute structure. */
extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr,
- short int __flags) __THROW;
+ short int __flags)
+ __THROW __nonnull ((1));
/* Get process group ID from the attribute structure. */
-extern int posix_spawnattr_getpgroup (__const posix_spawnattr_t *__attr,
- pid_t *__pgroup) __THROW;
+extern int posix_spawnattr_getpgroup (const posix_spawnattr_t *__restrict
+ __attr, pid_t *__restrict __pgroup)
+ __THROW __nonnull ((1, 2));
/* Store process group ID in the attribute structure. */
extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr,
- pid_t __pgroup) __THROW;
+ pid_t __pgroup)
+ __THROW __nonnull ((1));
/* Get scheduling policy from the attribute structure. */
-extern int posix_spawnattr_getschedpolicy (__const posix_spawnattr_t *__attr,
- int *__schedpolicy) __THROW;
+extern int posix_spawnattr_getschedpolicy (const posix_spawnattr_t *
+ __restrict __attr,
+ int *__restrict __schedpolicy)
+ __THROW __nonnull ((1, 2));
/* Store scheduling policy in the attribute structure. */
extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr,
- int __schedpolicy) __THROW;
+ int __schedpolicy)
+ __THROW __nonnull ((1));
+
+/* Get scheduling parameters from the attribute structure. */
+extern int posix_spawnattr_getschedparam (const posix_spawnattr_t *
+ __restrict __attr,
+ struct sched_param *__restrict
+ __schedparam)
+ __THROW __nonnull ((1, 2));
+
+/* Store scheduling parameters in the attribute structure. */
+extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr,
+ const struct sched_param *
+ __restrict __schedparam)
+ __THROW __nonnull ((1, 2));
/* Initialize data structure for file attribute for `spawn' call. */
extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
- __file_actions) __THROW;
+ __file_actions)
+ __THROW __nonnull ((1));
/* Free resources associated with FILE-ACTIONS. */
extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t *
- __file_actions) __THROW;
+ __file_actions)
+ __THROW __nonnull ((1));
/* 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 *
- __file_actions,
- int __fd, __const char *__path,
+ __restrict __file_actions,
+ int __fd,
+ const char *__restrict __path,
int __oflag, mode_t __mode)
- __THROW;
+ __THROW __nonnull ((1, 3));
/* 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;
+ __THROW __nonnull ((1));
/* 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;
+ int __fd, int __newfd)
+ __THROW __nonnull ((1));
+
+#ifdef __USE_GNU
+/* Add an action changing the directory to PATH during spawn. This
+ affects the subsequent file actions. */
+extern int posix_spawn_file_actions_addchdir_np (posix_spawn_file_actions_t *
+ __restrict __actions,
+ const char *__restrict __path)
+ __THROW __nonnull ((1, 2));
+
+/* Add an action changing the directory to FD during spawn. This
+ affects the subsequent file actions. FD is not duplicated and must
+ be open when the file action is executed. */
+extern int posix_spawn_file_actions_addfchdir_np (posix_spawn_file_actions_t *,
+ int __fd)
+ __THROW __nonnull ((1));
+#endif
__END_DECLS
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