X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fprocess%2Fposix_spawn.c;h=c3e800b879553627daef047bae08bea4313d95ea;hp=1120be081e90c1f64a1a76cc645ec5095abf889a;hb=97c8bdd88ae2ee03eb9d333a79fa669b3878fc76;hpb=400c5e5c8307a2ebe44ef1f203f5a15669f20347

diff --git a/src/process/posix_spawn.c b/src/process/posix_spawn.c
index 1120be08..c3e800b8 100644
--- a/src/process/posix_spawn.c
+++ b/src/process/posix_spawn.c
@@ -4,12 +4,22 @@
 #include <stdint.h>
 #include <fcntl.h>
 #include "syscall.h"
+#include "pthread_impl.h"
 #include "fdop.h"
+#include "libc.h"
 
 extern char **environ;
 
+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 *),
+	int (*exec)(const char *, char *const *, char *const *),
 	const posix_spawn_file_actions_t *fa,
 	const posix_spawnattr_t *restrict attr,
 	char *const argv[restrict], char *const envp[restrict])
@@ -21,8 +31,11 @@ int __posix_spawnx(pid_t *restrict res, const char *restrict path,
 
 	if (!attr) attr = &dummy_attr;
 
-	sigprocmask(SIG_BLOCK, (void *)(uint64_t []){-1}, &oldmask);
-	pid = __syscall(SYS_fork);
+	sigprocmask(SIG_BLOCK, SIGALL_SET, &oldmask);
+
+	__acquire_ptc();
+	pid = __vfork();
+	__release_ptc();
 
 	if (pid) {
 		sigprocmask(SIG_SETMASK, &oldmask, 0);
@@ -31,14 +44,14 @@ int __posix_spawnx(pid_t *restrict res, const char *restrict path,
 		return 0;
 	}
 
-	for (i=1; i<=64; i++) {
+	for (i=1; i<=8*__SYSCALL_SSLEN; i++) {
 		struct sigaction sa;
-		sigaction(i, 0, &sa);
-		if (sa.sa_handler!=SIG_IGN ||
+		__libc_sigaction(i, 0, &sa);
+		if (sa.sa_handler!=SIG_DFL && (sa.sa_handler!=SIG_IGN ||
 		    ((attr->__flags & POSIX_SPAWN_SETSIGDEF)
-		     && sigismember(&attr->__def, i) )) {
+		     && sigismember(&attr->__def, i) ))) {
 			sa.sa_handler = SIG_DFL;
-			sigaction(i, &sa, 0);
+			__libc_sigaction(i, &sa, 0);
 		}
 	}
 
@@ -82,8 +95,7 @@ int __posix_spawnx(pid_t *restrict res, const char *restrict path,
 	sigprocmask(SIG_SETMASK, (attr->__flags & POSIX_SPAWN_SETSIGMASK)
 		? &attr->__mask : &oldmask, 0);
 
-	if (envp) environ = (char **)envp;
-	exec(path, argv);
+	exec(path, argv, envp ? envp : environ);
 	_exit(127);
 
 	return 0;
@@ -94,5 +106,5 @@ int posix_spawn(pid_t *restrict res, const char *restrict path,
 	const posix_spawnattr_t *restrict attr,
 	char *const argv[restrict], char *const envp[restrict])
 {
-	return __posix_spawnx(res, path, execv, fa, attr, argv, envp);
+	return __posix_spawnx(res, path, execve, fa, attr, argv, envp);
 }