X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=lockfile.c;h=4824f4dc026e7b3f978fe4e9b2154335359e9d2e;hb=a6e3768f641c2703266422aa05c05f1d01e886b2;hp=2346e0e9ef0dbd247daf9d77c373029b491068c4;hpb=b642d9ef643371990c0a921836f2a074d48ce1b3;p=git.git

diff --git a/lockfile.c b/lockfile.c
index 2346e0e9e..4824f4dc0 100644
--- a/lockfile.c
+++ b/lockfile.c
@@ -1,7 +1,6 @@
 /*
  * Copyright (c) 2005, Junio C Hamano
  */
-#include <signal.h>
 #include "cache.h"
 
 static struct lock_file *lock_file_list;
@@ -22,15 +21,18 @@ static void remove_lock_file_on_signal(int signo)
 	raise(signo);
 }
 
-int hold_lock_file_for_update(struct lock_file *lk, const char *path)
+static int lock_file(struct lock_file *lk, const char *path)
 {
 	int fd;
 	sprintf(lk->filename, "%s.lock", path);
 	fd = open(lk->filename, O_RDWR | O_CREAT | O_EXCL, 0666);
 	if (0 <= fd) {
-		if (!lk->next) {
+		if (!lk->on_list) {
 			lk->next = lock_file_list;
 			lock_file_list = lk;
+			lk->on_list = 1;
+		}
+		if (lock_file_list) {
 			signal(SIGINT, remove_lock_file_on_signal);
 			atexit(remove_lock_file);
 		}
@@ -38,6 +40,16 @@ int hold_lock_file_for_update(struct lock_file *lk, const char *path)
 			return error("cannot fix permission bits on %s",
 				     lk->filename);
 	}
+	else
+		lk->filename[0] = 0;
+	return fd;
+}
+
+int hold_lock_file_for_update(struct lock_file *lk, const char *path, int die_on_error)
+{
+	int fd = lock_file(lk, path);
+	if (fd < 0 && die_on_error)
+		die("unable to create '%s.lock': %s", path, strerror(errno));
 	return fd;
 }