@echo \#define UDEV_PERMISSION_FILE \"$(configdir)\udev.permissions\" >> $@
@echo \#define UDEV_BIN \"$(DESTDIR)$(sbindir)/udev\" >> $@
@echo \#define UDEVD_BIN \"$(DESTDIR)$(sbindir)/udevd\" >> $@
- @echo \#define UDEVD_LOCK \"$(udevdir)/\.udevd.lock\" >> $@
# config files automatically generated
GEN_CONFIGS = $(LOCAL_CFG_DIR)/udev.conf
#include <pthread.h>
#include <stddef.h>
-#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
-#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
switch (signum) {
case SIGINT:
case SIGTERM:
- unlink(UDEVD_LOCK);
exit(20 + signum);
break;
default:
}
}
-static int one_and_only(void)
-{
- char string[50];
- int lock_file;
-
- lock_file = open(UDEVD_LOCK, O_RDWR | O_CREAT, 0x640);
- if (lock_file < 0)
- return -1;
-
- /* see if we can lock */
- if (lockf(lock_file, F_TLOCK, 0) < 0) {
- dbg("file is already locked, exit");
- close(lock_file);
- return -1;
- }
-
- snprintf(string, sizeof(string), "%d\n", getpid());
- write(lock_file, string, strlen(string));
-
- return 0;
-}
-
int main(int argc, char *argv[])
{
int ssock;
init_logging("udevd");
- /* only let one version of the daemon run at any one time */
- if (one_and_only() != 0)
- exit(0);
-
signal(SIGINT, sig_handler);
signal(SIGTERM, sig_handler);