From d2cf99df7df132d8d90c4f7b438374618793c15a Mon Sep 17 00:00:00 2001
From: "kay.sievers@vrfy.org" <kay.sievers@vrfy.org>
Date: Fri, 6 Feb 2004 01:04:28 -0800
Subject: [PATCH] [PATCH] udevd - kill the lockfile

---
 Makefile      |  1 -
 udev-remove.c |  1 -
 udevd.c       | 29 -----------------------------
 3 files changed, 31 deletions(-)

diff --git a/Makefile b/Makefile
index 35575806d..d3493f694 100644
--- a/Makefile
+++ b/Makefile
@@ -241,7 +241,6 @@ udev_version.h:
 	@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
diff --git a/udev-remove.c b/udev-remove.c
index 9db63ed93..c21938fae 100644
--- a/udev-remove.c
+++ b/udev-remove.c
@@ -34,7 +34,6 @@
 #include "logging.h"
 #include "namedev.h"
 #include "udevdb.h"
-#include "libsysfs/libsysfs.h"
 
 static int delete_path(char *path)
 {
diff --git a/udevd.c b/udevd.c
index 10d67f2c3..3ce8c8b07 100644
--- a/udevd.c
+++ b/udevd.c
@@ -21,7 +21,6 @@
 
 #include <pthread.h>
 #include <stddef.h>
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <signal.h>
 #include <unistd.h>
@@ -30,7 +29,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
-#include <fcntl.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -324,7 +322,6 @@ static void sig_handler(int signum)
 	switch (signum) {
 		case SIGINT:
 		case SIGTERM:
-			unlink(UDEVD_LOCK);
 			exit(20 + signum);
 			break;
 		default:
@@ -332,28 +329,6 @@ static void sig_handler(int signum)
 	}
 }
 
-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;
@@ -369,10 +344,6 @@ int main(int argc, char *argv[])
 
 	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);
 
-- 
2.30.2