X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fprocess%2Fposix_spawn.c;h=8a6ff6db6a38c6c708db761098477beec88d9958;hb=d5304147b983f309ed0c9050e3b8b6f2c9f87f43;hp=b1a9fbde52c9aafc8fe8a8725bc4439b3018a311;hpb=f48832ee15027763826c8a7ff9eeed3fc06bb499;p=musl

diff --git a/src/process/posix_spawn.c b/src/process/posix_spawn.c
index b1a9fbde..8a6ff6db 100644
--- a/src/process/posix_spawn.c
+++ b/src/process/posix_spawn.c
@@ -5,13 +5,23 @@
 #include <fcntl.h>
 #include "syscall.h"
 #include "fdop.h"
+#include "libc.h"
 
 extern char **environ;
 
-int __posix_spawnx(pid_t *res, const char *path,
+static void dummy_0()
+{
+}
+weak_alias(dummy_0, __acquire_ptc);
+weak_alias(dummy_0, __release_ptc);
+
+pid_t __vfork(void);
+
+int __posix_spawnx(pid_t *restrict res, const char *restrict path,
 	int (*exec)(const char *, char *const *),
 	const posix_spawn_file_actions_t *fa,
-	const posix_spawnattr_t *attr, char **argv, char **envp)
+	const posix_spawnattr_t *restrict attr,
+	char *const argv[restrict], char *const envp[restrict])
 {
 	pid_t pid;
 	sigset_t oldmask;
@@ -21,7 +31,10 @@ int __posix_spawnx(pid_t *res, const char *path,
 	if (!attr) attr = &dummy_attr;
 
 	sigprocmask(SIG_BLOCK, (void *)(uint64_t []){-1}, &oldmask);
-	pid = __syscall(SYS_fork);
+
+	__acquire_ptc();
+	pid = __vfork();
+	__release_ptc();
 
 	if (pid) {
 		sigprocmask(SIG_SETMASK, &oldmask, 0);
@@ -81,16 +94,17 @@ int __posix_spawnx(pid_t *res, const char *path,
 	sigprocmask(SIG_SETMASK, (attr->__flags & POSIX_SPAWN_SETSIGMASK)
 		? &attr->__mask : &oldmask, 0);
 
-	if (envp) environ = envp;
+	if (envp) environ = (char **)envp;
 	exec(path, argv);
 	_exit(127);
 
 	return 0;
 }
 
-int posix_spawn(pid_t *res, const char *path,
+int posix_spawn(pid_t *restrict res, const char *restrict path,
 	const posix_spawn_file_actions_t *fa,
-	const posix_spawnattr_t *attr, char **argv, char **envp)
+	const posix_spawnattr_t *restrict attr,
+	char *const argv[restrict], char *const envp[restrict])
 {
 	return __posix_spawnx(res, path, execv, fa, attr, argv, envp);
 }