X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fprocess%2Fposix_spawn.c;h=1120be081e90c1f64a1a76cc645ec5095abf889a;hp=7018c37ef6e6a6bfb391f2f1c3b26004625a4544;hb=400c5e5c8307a2ebe44ef1f203f5a15669f20347;hpb=d6c0c9784615ddb316ace52f3a9e2f025214ba2a

diff --git a/src/process/posix_spawn.c b/src/process/posix_spawn.c
index 7018c37e..1120be08 100644
--- a/src/process/posix_spawn.c
+++ b/src/process/posix_spawn.c
@@ -2,14 +2,17 @@
 #include <unistd.h>
 #include <signal.h>
 #include <stdint.h>
+#include <fcntl.h>
 #include "syscall.h"
+#include "fdop.h"
 
 extern char **environ;
 
-int __posix_spawnx(pid_t *res, const char *path,
+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;
@@ -49,19 +52,47 @@ int __posix_spawnx(pid_t *res, const char *path,
 		__syscall(SYS_setuid, __syscall(SYS_getuid)) ))
 		_exit(127);
 
+	if (fa && fa->__actions) {
+		struct fdop *op;
+		int ret, fd;
+		for (op = fa->__actions; op->next; op = op->next);
+		for (; op; op = op->prev) {
+			switch(op->cmd) {
+			case FDOP_CLOSE:
+				ret = __syscall(SYS_close, op->fd);
+				break;
+			case FDOP_DUP2:
+				ret = __syscall(SYS_dup2, op->fd, op->newfd)<0;
+				break;
+			case FDOP_OPEN:
+				fd = __syscall(SYS_open, op->path,
+					op->oflag | O_LARGEFILE, op->mode);
+				if (fd == op->fd) {
+					ret = 0;
+				} else {
+					ret = __syscall(SYS_dup2, fd, op->fd)<0;
+					__syscall(SYS_close, fd);
+				}
+				break;
+			}
+			if (ret) _exit(127);
+		}
+	}
+
 	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);
 }