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authordavidxu <davidxu@FreeBSD.org>2008-06-17 06:26:29 +0000
committerdavidxu <davidxu@FreeBSD.org>2008-06-17 06:26:29 +0000
commit3c1842a44c305fc36a39fec10fab78ad2db84f9e (patch)
tree3becab100d0d969a37794d8b43bde8568de3d68d
parent0b0ecff057d6974579e798f31444aae33a98c1b8 (diff)
downloadFreeBSD-src-3c1842a44c305fc36a39fec10fab78ad2db84f9e.zip
FreeBSD-src-3c1842a44c305fc36a39fec10fab78ad2db84f9e.tar.gz
Add POSIX routines called posix_spawn() and posix_spawnp(), which
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
-rw-r--r--include/Makefile2
-rw-r--r--include/spawn.h115
-rw-r--r--include/unistd.h1
-rw-r--r--lib/libc/gen/Makefile.inc4
-rw-r--r--lib/libc/gen/Symbol.map22
-rw-r--r--lib/libc/gen/exec.317
-rw-r--r--lib/libc/gen/exec.c31
-rw-r--r--lib/libc/gen/posix_spawn.c472
8 files changed, 649 insertions, 15 deletions
diff --git a/include/Makefile b/include/Makefile
index 46381db..4a857b0 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -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 \
diff --git a/include/spawn.h b/include/spawn.h
new file mode 100644
index 0000000..5783551
--- /dev/null
+++ b/include/spawn.h
@@ -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_ */
diff --git a/include/unistd.h b/include/unistd.h
index 53efe49..cfc8ce4 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -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);
diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
index c39fdb3..30a8b8f 100644
--- a/lib/libc/gen/Makefile.inc
+++ b/lib/libc/gen/Makefile.inc
@@ -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
diff --git a/lib/libc/gen/Symbol.map b/lib/libc/gen/Symbol.map
index 22c4395..4970bcb 100644
--- a/lib/libc/gen/Symbol.map
+++ b/lib/libc/gen/Symbol.map
@@ -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 {
diff --git a/lib/libc/gen/exec.3 b/lib/libc/gen/exec.3
index daeccd1..448a1b9 100644
--- a/lib/libc/gen/exec.3
+++ b/lib/libc/gen/exec.3
@@ -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 .
diff --git a/lib/libc/gen/exec.c b/lib/libc/gen/exec.c
index 2cf7a36..4525ce2 100644
--- a/lib/libc/gen/exec.c
+++ b/lib/libc/gen/exec.c
@@ -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));
+}
diff --git a/lib/libc/gen/posix_spawn.c b/lib/libc/gen/posix_spawn.c
new file mode 100644
index 0000000..bc135ff
--- /dev/null
+++ b/lib/libc/gen/posix_spawn.c
@@ -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);
+}
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