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Add POSIX routines called posix_spawn() and posix_spawnp(), which

Browse Source 
can be used as replacements for exec/fork in a lot of cases. This
change also added execvpe() which allows environment variable
PATH to be used for searching executable file, it is used for
implementing posix_spawnp().

PR: standards/122051
This commit is contained in:
David Xu 2008-06-17 06:26:29 +00:00
parent aec9f8e993
commit 947aa542e9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=179838
8 changed files with 649 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/Makefile
View File

@ -19,7 +19,7 @@ INCS= a.out.h ar.h assert.h bitstring.h complex.h cpio.h _ctype.h ctype.h \
printf.h proc_service.h pthread.h \
pthread_np.h pwd.h ranlib.h readpassphrase.h regex.h regexp.h \
res_update.h resolv.h runetype.h search.h setjmp.h sgtty.h \
signal.h stab.h \
signal.h spawn.h stab.h \
stdbool.h stddef.h stdio.h stdlib.h string.h stringlist.h \
strings.h sysexits.h tar.h tgmath.h \
time.h timeconv.h timers.h ttyent.h \

115
include/spawn.h Normal file
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@ -0,0 +1,115 @@
/*-
* Copyright (c) 2008 Ed Schouten <ed@80386.nl>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SPAWN_H_
#define _SPAWN_H_
#include <sys/cdefs.h>
#include <sys/_types.h>
#include <sys/_sigset.h>
#ifndef _MODE_T_DECLARED
typedef __mode_t mode_t;
#define _MODE_T_DECLARED
#endif
#ifndef _PID_T_DECLARED
typedef __pid_t pid_t;
#define _PID_T_DECLARED
#endif
#ifndef _SIGSET_T_DECLARED
#define _SIGSET_T_DECLARED
typedef __sigset_t sigset_t;
#endif
struct sched_param;
typedef struct __posix_spawnattr *posix_spawnattr_t;
typedef struct __posix_spawn_file_actions *posix_spawn_file_actions_t;
#define POSIX_SPAWN_RESETIDS 0x01
#define POSIX_SPAWN_SETPGROUP 0x02
#define POSIX_SPAWN_SETSCHEDPARAM 0x04
#define POSIX_SPAWN_SETSCHEDULER 0x08
#define POSIX_SPAWN_SETSIGDEF 0x10
#define POSIX_SPAWN_SETSIGMASK 0x20
__BEGIN_DECLS
/*
* Spawn routines
*/
int posix_spawn(pid_t * __restrict, const char * __restrict,
const posix_spawn_file_actions_t *, const posix_spawnattr_t * __restrict,
char * const [__restrict], char * const [__restrict]);
int posix_spawnp(pid_t * __restrict, const char * __restrict,
const posix_spawn_file_actions_t *, const posix_spawnattr_t * __restrict,
char * const [__restrict], char * const [__restrict]);
/*
* File descriptor actions
*/
int posix_spawn_file_actions_init(posix_spawn_file_actions_t *);
int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *);
int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t * __restrict,
int, const char * __restrict, int, mode_t);
int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *, int, int);
int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *, int);
/*
* Spawn attributes
*/
int posix_spawnattr_init(posix_spawnattr_t *);
int posix_spawnattr_destroy(posix_spawnattr_t *);
int posix_spawnattr_getflags(const posix_spawnattr_t * __restrict,
short * __restrict);
int posix_spawnattr_getpgroup(const posix_spawnattr_t * __restrict,
pid_t * __restrict);
int posix_spawnattr_getschedparam(const posix_spawnattr_t * __restrict,
struct sched_param * __restrict);
int posix_spawnattr_getschedpolicy(const posix_spawnattr_t * __restrict,
int * __restrict);
int posix_spawnattr_getsigdefault(const posix_spawnattr_t * __restrict,
sigset_t * __restrict);
int posix_spawnattr_getsigmask(const posix_spawnattr_t * __restrict,
sigset_t * __restrict sigmask);
int posix_spawnattr_setflags(posix_spawnattr_t *, short);
int posix_spawnattr_setpgroup(posix_spawnattr_t *, pid_t);
int posix_spawnattr_setschedparam(posix_spawnattr_t * __restrict,
const struct sched_param * __restrict);
int posix_spawnattr_setschedpolicy(posix_spawnattr_t *, int);
int posix_spawnattr_setsigdefault(posix_spawnattr_t * __restrict,
const sigset_t * __restrict);
int posix_spawnattr_setsigmask(posix_spawnattr_t * __restrict,
const sigset_t * __restrict);
__END_DECLS
#endif /* !_SPAWN_H_ */

1
include/unistd.h
View File

@ -335,6 +335,7 @@ int execlp(const char *, const char *, ...);
int execv(const char *, char * const *);
int execve(const char *, char * const *, char * const *);
int execvp(const char *, char * const *);
int execvpe(const char *, char * const *, char * const *);
pid_t fork(void);
long fpathconf(int, int);
char *getcwd(char *, size_t);

4
lib/libc/gen/Makefile.inc
View File

@ -21,7 +21,7 @@ SRCS+= __getosreldate.c __xuname.c \
initgroups.c isatty.c isinf.c isnan.c jrand48.c lcong48.c \
lockf.c lrand48.c mrand48.c nftw.c nice.c \
nlist.c nrand48.c opendir.c \
pause.c pmadvise.c popen.c pselect.c \
pause.c pmadvise.c popen.c posix_spawn.c pselect.c \
psignal.c pw_scan.c pwcache.c \
raise.c readdir.c readpassphrase.c rewinddir.c \
scandir.c seed48.c seekdir.c sem.c semctl.c \
@ -81,7 +81,7 @@ MLINKS+=err.3 err_set_exit.3 err.3 err_set_file.3 err.3 errc.3 err.3 errx.3 \
err.3 verr.3 err.3 verrc.3 err.3 verrx.3 err.3 vwarn.3 err.3 vwarnc.3 \
err.3 vwarnx.3 err.3 warnc.3 err.3 warn.3 err.3 warnx.3
MLINKS+=exec.3 execl.3 exec.3 execle.3 exec.3 execlp.3 exec.3 exect.3 \
exec.3 execv.3 exec.3 execvp.3 exec.3 execvP.3
exec.3 execv.3 exec.3 execvP.3 exec.3 execvp.3 exec.3 execvpe.3
MLINKS+=fpclassify.3 finite.3 fpclassify.3 finitef.3 \
fpclassify.3 isfinite.3 fpclassify.3 isinf.3 fpclassify.3 isnan.3 \
fpclassify.3 isnormal.3

22
lib/libc/gen/Symbol.map
View File

@ -329,6 +329,7 @@ FBSD_1.0 {
};
FBSD_1.1 {
execvpe;
fdopendir;
fts_open;
fts_close;
@ -339,6 +340,27 @@ FBSD_1.1 {
fts_get_stream;
fts_set_clientptr;
tcgetsid;
posix_spawn;
posix_spawn_file_actions_addclose;
posix_spawn_file_actions_adddup2;
posix_spawn_file_actions_addopen;
posix_spawn_file_actions_destroy;
posix_spawn_file_actions_init;
posix_spawnattr_destroy;
posix_spawnattr_getflags;
posix_spawnattr_getpgroup;
posix_spawnattr_getschedparam;
posix_spawnattr_getschedpolicy;
posix_spawnattr_getsigdefault;
posix_spawnattr_getsigmask;
posix_spawnattr_init;
posix_spawnattr_setflags;
posix_spawnattr_setpgroup;
posix_spawnattr_setschedparam;
posix_spawnattr_setschedpolicy;
posix_spawnattr_setsigdefault;
posix_spawnattr_setsigmask;
posix_spawnp;
};
FBSDprivate_1.0 {

17
lib/libc/gen/exec.3
View File

@ -38,6 +38,7 @@
.Nm exect ,
.Nm execv ,
.Nm execvp ,
.Nm execvpe ,
.Nm execvP
.Nd execute a file
.Sh LIBRARY
@ -64,6 +65,8 @@
.Ft int
.Fn execvp "const char *file" "char *const argv[]"
.Ft int
.Fn execvpe "const char *file" "char *const argv[]" "char *const envp[]"
.Ft int
.Fn execvP "const char *file" "const char *search_path" "char *const argv[]"
.Sh DESCRIPTION
The
@ -118,9 +121,10 @@ be terminated by a
pointer.
.Pp
The
.Fn execle
and
.Fn execle ,
.Fn exect
and
.Fn execvpe
functions also specify the environment of the executed process by following
the
.Dv NULL
@ -142,6 +146,7 @@ Some of these functions have special semantics.
The functions
.Fn execlp ,
.Fn execvp ,
.Fn execvpe ,
and
.Fn execvP
will duplicate the actions of the shell in searching for an executable file
@ -152,6 +157,7 @@ For
.Fn execlp
and
.Fn execvp ,
.Fn execvpe ,
search path is the path specified in the environment by
.Dq Ev PATH
variable.
@ -277,7 +283,8 @@ The
.Fn execl ,
.Fn execle ,
.Fn execlp ,
.Fn execvp
.Fn execvp ,
.Fn execvpe
and
.Fn execvP
functions
@ -319,3 +326,7 @@ The
.Fn execvP
function first appeared in
.Fx 5.2 .
The
.Fn execvpe
function first appeared in
.Fx 8.0 .

31
lib/libc/gen/exec.c
View File

@ -140,20 +140,15 @@ execv(name, argv)
int
execvp(const char *name, char * const *argv)
{
const char *path;
/* Get the path we're searching. */
if ((path = getenv("PATH")) == NULL)
path = _PATH_DEFPATH;
return (execvP(name, path, argv));
return (execvpe(name, argv, environ));
}
int
execvP(name, path, argv)
static int
execvPe(name, path, argv, envp)
const char *name;
const char *path;
char * const *argv;
char * const *envp;
{
char **memp;
int cnt, lp, ln;
@ -269,3 +264,21 @@ retry: (void)_execve(bp, argv, environ);
done:
return (-1);
}
int
execvP(const char *name, const char *path, char * const argv[])
{
return execvPe(name, path, argv, environ);
}
int
execvpe(const char *name, char * const argv[], char * const envp[])
{
const char *path;
/* Get the path we're searching. */
if ((path = getenv("PATH")) == NULL)
path = _PATH_DEFPATH;
return (execvPe(name, path, argv, envp));
}

472
lib/libc/gen/posix_spawn.c Normal file
View File

@ -0,0 +1,472 @@
/*-
* Copyright (c) 2008 Ed Schouten <ed@80386.nl>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "namespace.h"
#include <sys/queue.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <spawn.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "un-namespace.h"
extern char **environ;
struct __posix_spawnattr {
short sa_flags;
pid_t sa_pgroup;
struct sched_param sa_schedparam;
int sa_schedpolicy;
sigset_t sa_sigdefault;
sigset_t sa_sigmask;
};
struct __posix_spawn_file_actions {
STAILQ_HEAD(, __posix_spawn_file_actions_entry) fa_list;
};
typedef struct __posix_spawn_file_actions_entry {
STAILQ_ENTRY(__posix_spawn_file_actions_entry) fae_list;
enum { FAE_OPEN, FAE_DUP2, FAE_CLOSE } fae_action;
int fae_fildes;
union {
struct {
char *path;
#define fae_path fae_data.open.path
int oflag;
#define fae_oflag fae_data.open.oflag
mode_t mode;
#define fae_mode fae_data.open.mode
} open;
struct {
int newfildes;
#define fae_newfildes fae_data.dup2.newfildes
} dup2;
} fae_data;
} posix_spawn_file_actions_entry_t;
/*
* Spawn routines
*/
static int
process_spawnattr(const posix_spawnattr_t sa)
{
struct sigaction sigact = { .sa_flags = 0, .sa_handler = SIG_DFL };
int i;
/*
* POSIX doesn't really describe in which order everything
* should be set. We'll just set them in the order in which they
* are mentioned.
*/
/* Set signal masks/defaults */
if (sa->sa_flags & POSIX_SPAWN_SETSIGMASK) {
_sigprocmask(SIG_SETMASK, &sa->sa_sigmask, NULL);
}
if (sa->sa_flags & POSIX_SPAWN_SETSIGDEF) {
for (i = 1; i <= _SIG_MAXSIG; i++) {
if (sigismember(&sa->sa_sigdefault, i))
if (_sigaction(i, &sigact, NULL) != 0)
return (errno);
}
}
/* Reset user ID's */
if (sa->sa_flags & POSIX_SPAWN_RESETIDS) {
if (setegid(getgid()) != 0)
return (errno);
if (seteuid(getuid()) != 0)
return (errno);
}
/* Set process group */
if (sa->sa_flags & POSIX_SPAWN_SETPGROUP) {
if (setpgid(0, sa->sa_pgroup) != 0)
return (errno);
}
/* Set scheduler policy */
if (sa->sa_flags & POSIX_SPAWN_SETSCHEDULER) {
if (sched_setscheduler(0, sa->sa_schedpolicy,
&sa->sa_schedparam) != 0)
return (errno);
} else if (sa->sa_flags & POSIX_SPAWN_SETSCHEDPARAM) {
if (sched_setparam(0, &sa->sa_schedparam) != 0)
return (errno);
}
return (0);
}
static int
process_file_actions_entry(posix_spawn_file_actions_entry_t *fae)
{
int fd;
switch (fae->fae_action) {
case FAE_OPEN:
/* Perform an open(), make it use the right fd */
fd = _open(fae->fae_path, fae->fae_oflag, fae->fae_mode);
if (fd < 0)
return (errno);
if (fd != fae->fae_fildes) {
if (_dup2(fd, fae->fae_fildes) == -1)
return (errno);
if (_close(fd) != 0) {
if (errno == EBADF)
return (EBADF);
}
}
if (_fcntl(fae->fae_fildes, F_SETFD, 0) == -1)
return (errno);
break;
case FAE_DUP2:
/* Perform a dup2() */
if (_dup2(fae->fae_fildes, fae->fae_newfildes) == -1)
return (errno);
if (_fcntl(fae->fae_newfildes, F_SETFD, 0) == -1)
return (errno);
break;
case FAE_CLOSE:
/* Perform a close() */
if (_close(fae->fae_fildes) != 0) {
if (errno == EBADF)
return (EBADF);
}
break;
}
return (0);
}
static int
process_file_actions(const posix_spawn_file_actions_t fa)
{
posix_spawn_file_actions_entry_t *fae;
int error;
/* Replay all file descriptor modifications */
STAILQ_FOREACH(fae, &fa->fa_list, fae_list) {
error = process_file_actions_entry(fae);
if (error)
return (error);
}
return (0);
}
static int
do_posix_spawn(pid_t *pid, const char *path,
const posix_spawn_file_actions_t *fa,
const posix_spawnattr_t *sa,
char * const argv[], char * const envp[], int use_env_path)
{
pid_t p;
volatile int error = 0;
p = vfork();
switch (p) {
case -1:
return (errno);
case 0:
if (sa != NULL) {
error = process_spawnattr(*sa);
if (error)
_exit(127);
}
if (fa != NULL) {
error = process_file_actions(*fa);
if (error)
_exit(127);
}
if (use_env_path)
execvpe(path, argv, envp != NULL ? envp : environ);
else
_execve(path, argv, envp != NULL ? envp : environ);
error = errno;
_exit(127);
default:
if (pid != NULL)
*pid = p;
return (error);
}
}
int
posix_spawn(pid_t *pid, const char *path,
const posix_spawn_file_actions_t *fa,
const posix_spawnattr_t *sa,
char * const argv[], char * const envp[])
{
return do_posix_spawn(pid, path, fa, sa, argv, envp, 0);
}
int
posix_spawnp(pid_t *pid, const char *path,
const posix_spawn_file_actions_t *fa,
const posix_spawnattr_t *sa,
char * const argv[], char * const envp[])
{
return do_posix_spawn(pid, path, fa, sa, argv, envp, 1);
}
/*
* File descriptor actions
*/
int
posix_spawn_file_actions_init(posix_spawn_file_actions_t *ret)
{
posix_spawn_file_actions_t fa;
fa = malloc(sizeof(struct __posix_spawn_file_actions));
if (fa == NULL)
return (-1);
STAILQ_INIT(&fa->fa_list);
*ret = fa;
return (0);
}
int
posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *fa)
{
posix_spawn_file_actions_entry_t *fae;
while ((fae = STAILQ_FIRST(&(*fa)->fa_list)) != NULL) {
/* Remove file action entry from the queue */
STAILQ_REMOVE_HEAD(&(*fa)->fa_list, fae_list);
/* Deallocate file action entry */
if (fae->fae_action == FAE_OPEN)
free(fae->fae_path);
free(fae);
}
free(*fa);
return (0);
}
int
posix_spawn_file_actions_addopen(posix_spawn_file_actions_t * __restrict fa,
int fildes, const char * __restrict path, int oflag, mode_t mode)
{
posix_spawn_file_actions_entry_t *fae;
int error;
if (fildes < 0)
return (EBADF);
/* Allocate object */
fae = malloc(sizeof(posix_spawn_file_actions_entry_t));
if (fae == NULL)
return (errno);
/* Set values and store in queue */
fae->fae_action = FAE_OPEN;
fae->fae_path = strdup(path);
if (fae->fae_path == NULL) {
error = errno;
free(fae);
return (error);
}
fae->fae_fildes = fildes;
fae->fae_oflag = oflag;
fae->fae_mode = mode;
STAILQ_INSERT_TAIL(&(*fa)->fa_list, fae, fae_list);
return (0);
}
int
posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *fa,
int fildes, int newfildes)
{
posix_spawn_file_actions_entry_t *fae;
if (fildes < 0 || newfildes < 0)
return (EBADF);
/* Allocate object */
fae = malloc(sizeof(posix_spawn_file_actions_entry_t));
if (fae == NULL)
return (errno);
/* Set values and store in queue */
fae->fae_action = FAE_DUP2;
fae->fae_fildes = fildes;
fae->fae_newfildes = newfildes;
STAILQ_INSERT_TAIL(&(*fa)->fa_list, fae, fae_list);
return (0);
}
int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *fa,
int fildes)
{
posix_spawn_file_actions_entry_t *fae;
if (fildes < 0)
return (EBADF);
/* Allocate object */
fae = malloc(sizeof(posix_spawn_file_actions_entry_t));
if (fae == NULL)
return (errno);
/* Set values and store in queue */
fae->fae_action = FAE_CLOSE;
fae->fae_fildes = fildes;
STAILQ_INSERT_TAIL(&(*fa)->fa_list, fae, fae_list);
return (0);
}
/*
* Spawn attributes
*/
int
posix_spawnattr_init(posix_spawnattr_t *ret)
{
posix_spawnattr_t sa;
sa = calloc(1, sizeof(struct __posix_spawnattr));
if (sa == NULL)
return (errno);
/* Set defaults as specified by POSIX, cleared above */
*ret = sa;
return (0);
}
int
posix_spawnattr_destroy(posix_spawnattr_t *sa)
{
free(*sa);
return (0);
}
int
posix_spawnattr_getflags(const posix_spawnattr_t * __restrict sa,
short * __restrict flags)
{
*flags = (*sa)->sa_flags;
return (0);
}
int
posix_spawnattr_getpgroup(const posix_spawnattr_t * __restrict sa,
pid_t * __restrict pgroup)
{
*pgroup = (*sa)->sa_pgroup;
return (0);
}
int
posix_spawnattr_getschedparam(const posix_spawnattr_t * __restrict sa,
struct sched_param * __restrict schedparam)
{
*schedparam = (*sa)->sa_schedparam;
return (0);
}
int
posix_spawnattr_getschedpolicy(const posix_spawnattr_t * __restrict sa,
int * __restrict schedpolicy)
{
*schedpolicy = (*sa)->sa_schedpolicy;
return (0);
}
int
posix_spawnattr_getsigdefault(const posix_spawnattr_t * __restrict sa,
sigset_t * __restrict sigdefault)
{
*sigdefault = (*sa)->sa_sigdefault;
return (0);
}
int
posix_spawnattr_getsigmask(const posix_spawnattr_t * __restrict sa,
sigset_t * __restrict sigmask)
{
*sigmask = (*sa)->sa_sigmask;
return (0);
}
int
posix_spawnattr_setflags(posix_spawnattr_t *sa, short flags)
{
(*sa)->sa_flags = flags;
return (0);
}
int
posix_spawnattr_setpgroup(posix_spawnattr_t *sa, pid_t pgroup)
{
(*sa)->sa_pgroup = pgroup;
return (0);
}
int
posix_spawnattr_setschedparam(posix_spawnattr_t *sa __restrict,
const struct sched_param * __restrict schedparam)
{
(*sa)->sa_schedparam = *schedparam;
return (0);
}
int
posix_spawnattr_setschedpolicy(posix_spawnattr_t *sa, int schedpolicy)
{
(*sa)->sa_schedpolicy = schedpolicy;
return (0);
}
int
posix_spawnattr_setsigdefault(posix_spawnattr_t * __restrict sa,
const sigset_t * __restrict sigdefault)
{
(*sa)->sa_sigdefault = *sigdefault;
return (0);
}
int
posix_spawnattr_setsigmask(posix_spawnattr_t * __restrict sa,
const sigset_t * __restrict sigmask)
{
(*sa)->sa_sigmask = *sigmask;
return (0);
}