You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.1 KiB
54 lines
1.1 KiB
20 years ago
|
/*
|
||
|
|
* Copyright (c) 2005, Junio C Hamano
|
||
|
|
*/
|
||
|
|
#include <signal.h>
|
||
|
|
#include "cache.h"
|
||
|
|
|
||
|
|
static struct cache_file *cache_file_list;
|
||
|
|
|
||
|
|
static void remove_lock_file(void)
|
||
|
|
{
|
||
|
|
while (cache_file_list) {
|
||
|
|
if (cache_file_list->lockfile[0])
|
||
|
|
unlink(cache_file_list->lockfile);
|
||
|
|
cache_file_list = cache_file_list->next;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void remove_lock_file_on_signal(int signo)
|
||
|
|
{
|
||
|
|
remove_lock_file();
|
||
|
|
}
|
||
|
|
|
||
|
|
int hold_index_file_for_update(struct cache_file *cf, const char *path)
|
||
|
|
{
|
||
|
|
sprintf(cf->lockfile, "%s.lock", path);
|
||
|
|
cf->next = cache_file_list;
|
||
|
|
cache_file_list = cf;
|
||
|
|
if (!cf->next) {
|
||
|
|
signal(SIGINT, remove_lock_file_on_signal);
|
||
|
|
atexit(remove_lock_file);
|
||
|
|
}
|
||
|
|
return open(cf->lockfile, O_RDWR | O_CREAT | O_EXCL, 0600);
|
||
|
|
}
|
||
|
|
|
||
|
|
int commit_index_file(struct cache_file *cf)
|
||
|
|
{
|
||
|
|
char indexfile[PATH_MAX];
|
||
|
|
int i;
|
||
|
|
strcpy(indexfile, cf->lockfile);
|
||
|
|
i = strlen(indexfile) - 5; /* .lock */
|
||
|
|
indexfile[i] = 0;
|
||
|
|
i = rename(cf->lockfile, indexfile);
|
||
|
|
cf->lockfile[0] = 0;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
void rollback_index_file(struct cache_file *cf)
|
||
|
|
{
|
||
|
|
if (cf->lockfile[0])
|
||
|
|
unlink(cf->lockfile);
|
||
|
|
cf->lockfile[0] = 0;
|
||
|
|
}
|
||
|
|
|