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.
57 lines
1.1 KiB
57 lines
1.1 KiB
/* |
|
* 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(); |
|
signal(SIGINT, SIG_DFL); |
|
raise(signo); |
|
} |
|
|
|
int hold_index_file_for_update(struct cache_file *cf, const char *path) |
|
{ |
|
int fd; |
|
sprintf(cf->lockfile, "%s.lock", path); |
|
fd = open(cf->lockfile, O_RDWR | O_CREAT | O_EXCL, 0666); |
|
if (fd >=0 && !cf->next) { |
|
cf->next = cache_file_list; |
|
cache_file_list = cf; |
|
signal(SIGINT, remove_lock_file_on_signal); |
|
atexit(remove_lock_file); |
|
} |
|
return fd; |
|
} |
|
|
|
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; |
|
} |
|
|
|
|