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Commit | Line | Data |
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415e96c8 JH |
1 | /* |
2 | * Copyright (c) 2005, Junio C Hamano | |
3 | */ | |
4 | #include <signal.h> | |
5 | #include "cache.h" | |
6 | ||
7 | static struct cache_file *cache_file_list; | |
8 | ||
9 | static void remove_lock_file(void) | |
10 | { | |
11 | while (cache_file_list) { | |
12 | if (cache_file_list->lockfile[0]) | |
13 | unlink(cache_file_list->lockfile); | |
14 | cache_file_list = cache_file_list->next; | |
15 | } | |
16 | } | |
17 | ||
18 | static void remove_lock_file_on_signal(int signo) | |
19 | { | |
20 | remove_lock_file(); | |
6a1f79c1 PB |
21 | signal(SIGINT, SIG_DFL); |
22 | raise(signo); | |
415e96c8 JH |
23 | } |
24 | ||
25 | int hold_index_file_for_update(struct cache_file *cf, const char *path) | |
26 | { | |
d6e548d6 | 27 | int fd; |
415e96c8 | 28 | sprintf(cf->lockfile, "%s.lock", path); |
d6e548d6 AR |
29 | fd = open(cf->lockfile, O_RDWR | O_CREAT | O_EXCL, 0666); |
30 | if (fd >=0 && !cf->next) { | |
31 | cf->next = cache_file_list; | |
32 | cache_file_list = cf; | |
415e96c8 JH |
33 | signal(SIGINT, remove_lock_file_on_signal); |
34 | atexit(remove_lock_file); | |
35 | } | |
d6e548d6 | 36 | return fd; |
415e96c8 JH |
37 | } |
38 | ||
39 | int commit_index_file(struct cache_file *cf) | |
40 | { | |
41 | char indexfile[PATH_MAX]; | |
42 | int i; | |
43 | strcpy(indexfile, cf->lockfile); | |
44 | i = strlen(indexfile) - 5; /* .lock */ | |
45 | indexfile[i] = 0; | |
46 | i = rename(cf->lockfile, indexfile); | |
47 | cf->lockfile[0] = 0; | |
48 | return i; | |
49 | } | |
50 | ||
51 | void rollback_index_file(struct cache_file *cf) | |
52 | { | |
53 | if (cf->lockfile[0]) | |
54 | unlink(cf->lockfile); | |
55 | cf->lockfile[0] = 0; | |
56 | } | |
57 |