X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fprocd.git;a=blobdiff_plain;f=inittab.c;h=6dde11af1a7ec9a1744b6fbd73e627f7061a840a;hp=eb402f8587e04522fa91f579a062168deda69159;hb=0cf8b0576a66ca28aeec98e19dc9c1cbf4324894;hpb=91da63d3d3fd680c805dd1a1b78df5b8731a8173

diff --git a/inittab.c b/inittab.c
index eb402f8..6dde11a 100644
--- a/inittab.c
+++ b/inittab.c
@@ -12,6 +12,7 @@
  * GNU General Public License for more details.
  */
 
+#define _GNU_SOURCE
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
@@ -65,50 +66,35 @@ static char *ask = "/sbin/askfirst";
 
 static LIST_HEAD(actions);
 
-static int dev_open(const char *dev)
+static int dev_exist(const char *dev)
 {
-	int fd = -1;
-
-	if (dev) {
-		if (chdir("/dev"))
-			ERROR("failed to change dir to /dev\n");
-		fd = open(dev, O_RDWR);
-		if (chdir("/"))
-			ERROR("failed to change dir to /\n");
-	}
+	int dfd, fd;
 
-	return fd;
-}
+	dfd = open("/dev", O_PATH|O_DIRECTORY);
 
-static int dev_exist(const char *dev)
-{
-	int res;
+	if (dfd < 0)
+		return 0;
+
+	fd = openat(dfd, dev, O_RDONLY);
+	close(dfd);
 
-	res = dev_open(dev);
-	if (res != -1)
-		close(res);
+	if (fd < 0)
+		return 0;
 
-	return (res != -1);
+	close(fd);
+	return 1;
 }
 
 static void fork_worker(struct init_action *a)
 {
-	int fd;
 	pid_t p;
 
 	a->proc.pid = fork();
 	if (!a->proc.pid) {
 		p = setsid();
 
-		fd = dev_open(a->id);
-		if (fd != -1)
-		{
-			dup2(fd, STDIN_FILENO);
-			dup2(fd, STDOUT_FILENO);
-			dup2(fd, STDERR_FILENO);
-			if (fd > STDERR_FILENO)
-				close(fd);
-		}
+		if (patch_stdio(a->id))
+			ERROR("Failed to setup i/o redirection\n");
 
 		ioctl(STDIN_FILENO, TIOCSCTTY, 1);
 		tcsetpgrp(STDIN_FILENO, p);
@@ -151,7 +137,10 @@ static void runrc(struct init_action *a)
 		ERROR("valid format is rcS <S|K> <param>\n");
 		return;
 	}
-	rcS(a->argv[1], a->argv[2], rcdone);
+
+	/* proceed even if no init or shutdown scripts run */
+	if (rcS(a->argv[1], a->argv[2], rcdone))
+		rcdone(NULL);
 }
 
 static void askfirst(struct init_action *a)