* GNU General Public License for more details.
*/
+#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/ioctl.h>
#include <fcntl.h>
#include <stdio.h>
#define MAX_ARGS 8
struct init_action;
-const char *console;
+char *console = NULL;
struct init_handler {
const char *name;
static LIST_HEAD(actions);
+static int dev_exist(const char *dev)
+{
+ int dfd, fd;
+
+ dfd = open("/dev", O_PATH|O_DIRECTORY);
+
+ if (dfd < 0)
+ return 0;
+
+ fd = openat(dfd, dev, O_RDONLY);
+ close(dfd);
+
+ if (fd < 0)
+ return 0;
+
+ close(fd);
+ return 1;
+}
+
static void fork_worker(struct init_action *a)
{
+ pid_t p;
+
a->proc.pid = fork();
if (!a->proc.pid) {
+ p = setsid();
+
+ if (patch_stdio(a->id))
+ ERROR("Failed to setup i/o redirection\n");
+
+ ioctl(STDIN_FILENO, TIOCSCTTY, 1);
+ tcsetpgrp(STDIN_FILENO, p);
+
execvp(a->argv[0], a->argv);
ERROR("Failed to execute %s\n", a->argv[0]);
exit(-1);
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)
{
- struct stat s;
int i;
- chdir("/dev");
- i = stat(a->id, &s);
- chdir("/");
- if (i || (console && !strcmp(console, a->id))) {
+ if (!dev_exist(a->id) || (console && !strcmp(console, a->id))) {
DEBUG(4, "Skipping %s\n", a->id);
return;
}
a->tout.cb = respawn;
- for (i = MAX_ARGS - 2; i >= 2; i--)
- a->argv[i] = a->argv[i - 2];
+ for (i = MAX_ARGS - 1; i >= 1; i--)
+ a->argv[i] = a->argv[i - 1];
a->argv[0] = ask;
- a->argv[1] = a->id;
a->respawn = 500;
a->proc.cb = child_exit;
static void askconsole(struct init_action *a)
{
- struct stat s;
char line[256], *tty, *split;
int i;
tty = get_cmdline_val("console", line, sizeof(line));
- split=strchr(tty, ',');
- if (split != NULL)
- split = '\0';
-
- chdir("/dev");
- i = stat(tty, &s);
- chdir("/");
- if (i) {
- DEBUG(4, "skipping %s\n", tty);
- return;
+ if (tty != NULL) {
+ split = strchr(tty, ',');
+ if (split != NULL)
+ *split = '\0';
+
+ if (!dev_exist(tty)) {
+ DEBUG(4, "skipping %s\n", tty);
+ return;
+ }
+
+ console = strdup(tty);
+ a->id = strdup(tty);
+ }
+ else {
+ console = NULL;
+ a->id = NULL;
}
- console = strdup(tty);
a->tout.cb = respawn;
- for (i = MAX_ARGS - 2; i >= 2; i--)
- a->argv[i] = a->argv[i - 2];
+ for (i = MAX_ARGS - 1; i >= 1; i--)
+ a->argv[i] = a->argv[i - 1];
a->argv[0] = ask;
- a->argv[1] = strdup(tty);
a->respawn = 500;
a->proc.cb = child_exit;