*
*/
+#define _KLIBC_HAS_ARCH_SIG_ATOMIC_T
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include "namedev.h"
#include "udevdb.h"
+/* timeout flag for udevdb */
+extern sig_atomic_t gotalarm;
+
/* global variables */
char **main_argv;
char **main_envp;
}
#endif
-asmlinkage static void sig_handler(int signum)
+static void asmlinkage sig_handler(int signum)
{
switch (signum) {
+ case SIGALRM:
+ gotalarm = 1;
+ info("error: timeout reached, event probably not handled correctly");
+ break;
case SIGINT:
case SIGTERM:
udevdb_exit();
}
}
-static char *subsystem_blacklist[] = {
- "scsi_host",
- "scsi_device",
- "usb_host",
- "pci_bus",
- "pcmcia_socket",
- ""
-};
+/* list of subsystems we don't care about. not listing such systems here
+ * is not critical, but it makes it faster as we don't look for the "dev" file
+ */
+static int subsystem_without_dev(const char *subsystem)
+{
+ char *subsystem_blacklist[] = {
+ "scsi_host",
+ "scsi_device",
+ "usb_host",
+ "pci_bus",
+ "pcmcia_socket",
+ "bluetooth",
+ "i2c-adapter",
+ "pci_bus",
+ "ieee1394",
+ "ieee1394_host",
+ "ieee1394_node",
+ NULL
+ };
+ char **subsys;
+
+ for (subsys = subsystem_blacklist; *subsys != NULL; subsys++) {
+ if (strcmp(subsystem, *subsys) == 0)
+ return 1;
+ }
+
+ return 0;
+}
int main(int argc, char *argv[], char *envp[])
{
- main_argv = argv;
- main_envp = envp;
struct sigaction act;
char *action;
char *devpath = "";
char *subsystem = "";
- int i;
int retval = -EINVAL;
enum {
ADD,
dbg("version %s", UDEV_VERSION);
- /* initialize our configuration */
+ main_argv = argv;
+ main_envp = envp;
+
+ logging_init("udev");
+
udev_init_config();
if (strstr(argv[0], "udevstart")) {
}
/* skip blacklisted subsystems */
- i = 0;
- while (subsystem_blacklist[i][0] != '\0') {
- if (strcmp(subsystem, subsystem_blacklist[i]) == 0) {
- dbg("don't care about '%s' devices", subsystem);
- goto exit;
- }
- i++;
- }
+ if (subsystem_without_dev(subsystem)) {
+ dbg("don't care about '%s' devices", subsystem);
+ exit(0);
+ };
}
/* set signal handlers */
- act.sa_handler = sig_handler;
+ act.sa_handler = (void (*) (int))sig_handler;
sigemptyset (&act.sa_mask);
- act.sa_flags = SA_RESTART;
+ /* alarm must not restart syscalls*/
+ sigaction(SIGALRM, &act, NULL);
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
+ /* trigger timout to interrupt blocking syscalls */
+ alarm(ALARM_TIMEOUT);
+
/* initialize udev database */
- if (udevdb_init(UDEVDB_DEFAULT) != 0) {
- dbg("unable to initialize database");
- goto exit;
- }
+ if (udevdb_init(UDEVDB_DEFAULT) != 0)
+ info("error: unable to initialize database, continuing without database");
switch(act_type) {
case UDEVSTART:
dbg("udevstart");
namedev_init();
- udev_sleep = 0;
retval = udev_start();
break;
case ADD:
udevdb_exit();
exit:
+ logging_close();
return retval;
}