]>
Commit | Line | Data |
---|---|---|
95fc7512 | 1 | #include "cache.h" |
85023577 | 2 | #include "refs.h" |
cf0adba7 JH |
3 | #include "object.h" |
4 | #include "tag.h" | |
95fc7512 | 5 | |
f4204ab9 JH |
6 | /* ISSYMREF=01 and ISPACKED=02 are public interfaces */ |
7 | #define REF_KNOWS_PEELED 04 | |
8 | ||
e1e22e37 LT |
9 | struct ref_list { |
10 | struct ref_list *next; | |
f4204ab9 | 11 | unsigned char flag; /* ISSYMREF? ISPACKED? */ |
e1e22e37 | 12 | unsigned char sha1[20]; |
f4204ab9 | 13 | unsigned char peeled[20]; |
e1e22e37 LT |
14 | char name[FLEX_ARRAY]; |
15 | }; | |
16 | ||
f4204ab9 | 17 | static const char *parse_ref_line(char *line, unsigned char *sha1) |
e1e22e37 LT |
18 | { |
19 | /* | |
20 | * 42: the answer to everything. | |
21 | * | |
22 | * In this case, it happens to be the answer to | |
23 | * 40 (length of sha1 hex representation) | |
24 | * +1 (space in between hex and name) | |
25 | * +1 (newline at the end of the line) | |
26 | */ | |
27 | int len = strlen(line) - 42; | |
28 | ||
29 | if (len <= 0) | |
30 | return NULL; | |
31 | if (get_sha1_hex(line, sha1) < 0) | |
32 | return NULL; | |
33 | if (!isspace(line[40])) | |
34 | return NULL; | |
35 | line += 41; | |
f4204ab9 JH |
36 | if (isspace(*line)) |
37 | return NULL; | |
e1e22e37 LT |
38 | if (line[len] != '\n') |
39 | return NULL; | |
40 | line[len] = 0; | |
cf0adba7 | 41 | |
e1e22e37 LT |
42 | return line; |
43 | } | |
44 | ||
8da19775 | 45 | static struct ref_list *add_ref(const char *name, const unsigned char *sha1, |
f4204ab9 JH |
46 | int flag, struct ref_list *list, |
47 | struct ref_list **new_entry) | |
e1e22e37 LT |
48 | { |
49 | int len; | |
50 | struct ref_list **p = &list, *entry; | |
51 | ||
52 | /* Find the place to insert the ref into.. */ | |
53 | while ((entry = *p) != NULL) { | |
54 | int cmp = strcmp(entry->name, name); | |
55 | if (cmp > 0) | |
56 | break; | |
57 | ||
58 | /* Same as existing entry? */ | |
f4204ab9 JH |
59 | if (!cmp) { |
60 | if (new_entry) | |
61 | *new_entry = entry; | |
e1e22e37 | 62 | return list; |
f4204ab9 | 63 | } |
e1e22e37 LT |
64 | p = &entry->next; |
65 | } | |
66 | ||
67 | /* Allocate it and add it in.. */ | |
68 | len = strlen(name) + 1; | |
69 | entry = xmalloc(sizeof(struct ref_list) + len); | |
70 | hashcpy(entry->sha1, sha1); | |
f4204ab9 | 71 | hashclr(entry->peeled); |
e1e22e37 | 72 | memcpy(entry->name, name, len); |
8da19775 | 73 | entry->flag = flag; |
e1e22e37 LT |
74 | entry->next = *p; |
75 | *p = entry; | |
f4204ab9 JH |
76 | if (new_entry) |
77 | *new_entry = entry; | |
e1e22e37 LT |
78 | return list; |
79 | } | |
80 | ||
5e290ff7 JH |
81 | /* |
82 | * Future: need to be in "struct repository" | |
83 | * when doing a full libification. | |
84 | */ | |
85 | struct cached_refs { | |
86 | char did_loose; | |
87 | char did_packed; | |
88 | struct ref_list *loose; | |
89 | struct ref_list *packed; | |
90 | } cached_refs; | |
91 | ||
92 | static void free_ref_list(struct ref_list *list) | |
93 | { | |
94 | struct ref_list *next; | |
95 | for ( ; list; list = next) { | |
96 | next = list->next; | |
97 | free(list); | |
98 | } | |
99 | } | |
100 | ||
101 | static void invalidate_cached_refs(void) | |
e1e22e37 | 102 | { |
5e290ff7 JH |
103 | struct cached_refs *ca = &cached_refs; |
104 | ||
105 | if (ca->did_loose && ca->loose) | |
106 | free_ref_list(ca->loose); | |
107 | if (ca->did_packed && ca->packed) | |
108 | free_ref_list(ca->packed); | |
109 | ca->loose = ca->packed = NULL; | |
110 | ca->did_loose = ca->did_packed = 0; | |
111 | } | |
e1e22e37 | 112 | |
f4204ab9 JH |
113 | static void read_packed_refs(FILE *f, struct cached_refs *cached_refs) |
114 | { | |
115 | struct ref_list *list = NULL; | |
116 | struct ref_list *last = NULL; | |
117 | char refline[PATH_MAX]; | |
118 | int flag = REF_ISPACKED; | |
119 | ||
120 | while (fgets(refline, sizeof(refline), f)) { | |
121 | unsigned char sha1[20]; | |
122 | const char *name; | |
123 | static const char header[] = "# pack-refs with:"; | |
124 | ||
125 | if (!strncmp(refline, header, sizeof(header)-1)) { | |
126 | const char *traits = refline + sizeof(header) - 1; | |
127 | if (strstr(traits, " peeled ")) | |
128 | flag |= REF_KNOWS_PEELED; | |
129 | /* perhaps other traits later as well */ | |
130 | continue; | |
131 | } | |
132 | ||
133 | name = parse_ref_line(refline, sha1); | |
134 | if (name) { | |
135 | list = add_ref(name, sha1, flag, list, &last); | |
136 | continue; | |
137 | } | |
138 | if (last && | |
139 | refline[0] == '^' && | |
140 | strlen(refline) == 42 && | |
141 | refline[41] == '\n' && | |
142 | !get_sha1_hex(refline + 1, sha1)) | |
143 | hashcpy(last->peeled, sha1); | |
144 | } | |
145 | cached_refs->packed = list; | |
146 | } | |
147 | ||
5e290ff7 JH |
148 | static struct ref_list *get_packed_refs(void) |
149 | { | |
150 | if (!cached_refs.did_packed) { | |
e1e22e37 | 151 | FILE *f = fopen(git_path("packed-refs"), "r"); |
f4204ab9 | 152 | cached_refs.packed = NULL; |
e1e22e37 | 153 | if (f) { |
f4204ab9 | 154 | read_packed_refs(f, &cached_refs); |
e1e22e37 | 155 | fclose(f); |
e1e22e37 | 156 | } |
5e290ff7 | 157 | cached_refs.did_packed = 1; |
e1e22e37 | 158 | } |
5e290ff7 | 159 | return cached_refs.packed; |
e1e22e37 LT |
160 | } |
161 | ||
162 | static struct ref_list *get_ref_dir(const char *base, struct ref_list *list) | |
163 | { | |
164 | DIR *dir = opendir(git_path("%s", base)); | |
165 | ||
166 | if (dir) { | |
167 | struct dirent *de; | |
168 | int baselen = strlen(base); | |
ed378ec7 | 169 | char *ref = xmalloc(baselen + 257); |
e1e22e37 | 170 | |
ed378ec7 | 171 | memcpy(ref, base, baselen); |
e1e22e37 | 172 | if (baselen && base[baselen-1] != '/') |
ed378ec7 | 173 | ref[baselen++] = '/'; |
e1e22e37 LT |
174 | |
175 | while ((de = readdir(dir)) != NULL) { | |
176 | unsigned char sha1[20]; | |
177 | struct stat st; | |
8da19775 | 178 | int flag; |
e1e22e37 LT |
179 | int namelen; |
180 | ||
181 | if (de->d_name[0] == '.') | |
182 | continue; | |
183 | namelen = strlen(de->d_name); | |
184 | if (namelen > 255) | |
185 | continue; | |
186 | if (has_extension(de->d_name, ".lock")) | |
187 | continue; | |
ed378ec7 LT |
188 | memcpy(ref + baselen, de->d_name, namelen+1); |
189 | if (stat(git_path("%s", ref), &st) < 0) | |
e1e22e37 LT |
190 | continue; |
191 | if (S_ISDIR(st.st_mode)) { | |
ed378ec7 | 192 | list = get_ref_dir(ref, list); |
e1e22e37 LT |
193 | continue; |
194 | } | |
8da19775 | 195 | if (!resolve_ref(ref, sha1, 1, &flag)) { |
ed378ec7 | 196 | error("%s points nowhere!", ref); |
e1e22e37 LT |
197 | continue; |
198 | } | |
f4204ab9 | 199 | list = add_ref(ref, sha1, flag, list, NULL); |
e1e22e37 | 200 | } |
ed378ec7 | 201 | free(ref); |
e1e22e37 LT |
202 | closedir(dir); |
203 | } | |
204 | return list; | |
205 | } | |
206 | ||
207 | static struct ref_list *get_loose_refs(void) | |
208 | { | |
5e290ff7 JH |
209 | if (!cached_refs.did_loose) { |
210 | cached_refs.loose = get_ref_dir("refs", NULL); | |
211 | cached_refs.did_loose = 1; | |
e1e22e37 | 212 | } |
5e290ff7 | 213 | return cached_refs.loose; |
e1e22e37 LT |
214 | } |
215 | ||
ca8db142 LT |
216 | /* We allow "recursive" symbolic refs. Only within reason, though */ |
217 | #define MAXDEPTH 5 | |
218 | ||
8da19775 | 219 | const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *flag) |
8a65ff76 | 220 | { |
a876ed83 JH |
221 | int depth = MAXDEPTH, len; |
222 | char buffer[256]; | |
ed378ec7 | 223 | static char ref_buffer[256]; |
ca8db142 | 224 | |
8da19775 JH |
225 | if (flag) |
226 | *flag = 0; | |
227 | ||
a876ed83 | 228 | for (;;) { |
ed378ec7 | 229 | const char *path = git_path("%s", ref); |
a876ed83 JH |
230 | struct stat st; |
231 | char *buf; | |
232 | int fd; | |
8a65ff76 | 233 | |
a876ed83 JH |
234 | if (--depth < 0) |
235 | return NULL; | |
ca8db142 | 236 | |
a876ed83 JH |
237 | /* Special case: non-existing file. |
238 | * Not having the refs/heads/new-branch is OK | |
239 | * if we are writing into it, so is .git/HEAD | |
240 | * that points at refs/heads/master still to be | |
241 | * born. It is NOT OK if we are resolving for | |
242 | * reading. | |
243 | */ | |
244 | if (lstat(path, &st) < 0) { | |
434cd0cd LT |
245 | struct ref_list *list = get_packed_refs(); |
246 | while (list) { | |
f4204ab9 | 247 | if (!strcmp(ref, list->name)) { |
434cd0cd | 248 | hashcpy(sha1, list->sha1); |
8da19775 JH |
249 | if (flag) |
250 | *flag |= REF_ISPACKED; | |
434cd0cd LT |
251 | return ref; |
252 | } | |
253 | list = list->next; | |
254 | } | |
a876ed83 JH |
255 | if (reading || errno != ENOENT) |
256 | return NULL; | |
e702496e | 257 | hashclr(sha1); |
ed378ec7 | 258 | return ref; |
a876ed83 | 259 | } |
ca8db142 | 260 | |
a876ed83 JH |
261 | /* Follow "normalized" - ie "refs/.." symlinks by hand */ |
262 | if (S_ISLNK(st.st_mode)) { | |
263 | len = readlink(path, buffer, sizeof(buffer)-1); | |
264 | if (len >= 5 && !memcmp("refs/", buffer, 5)) { | |
ed378ec7 LT |
265 | buffer[len] = 0; |
266 | strcpy(ref_buffer, buffer); | |
267 | ref = ref_buffer; | |
8da19775 JH |
268 | if (flag) |
269 | *flag |= REF_ISSYMREF; | |
a876ed83 JH |
270 | continue; |
271 | } | |
ca8db142 | 272 | } |
a876ed83 | 273 | |
7a21632f DS |
274 | /* Is it a directory? */ |
275 | if (S_ISDIR(st.st_mode)) { | |
276 | errno = EISDIR; | |
277 | return NULL; | |
278 | } | |
279 | ||
a876ed83 JH |
280 | /* |
281 | * Anything else, just open it and try to use it as | |
282 | * a ref | |
283 | */ | |
284 | fd = open(path, O_RDONLY); | |
285 | if (fd < 0) | |
286 | return NULL; | |
287 | len = read(fd, buffer, sizeof(buffer)-1); | |
288 | close(fd); | |
289 | ||
290 | /* | |
291 | * Is it a symbolic ref? | |
292 | */ | |
293 | if (len < 4 || memcmp("ref:", buffer, 4)) | |
294 | break; | |
295 | buf = buffer + 4; | |
296 | len -= 4; | |
297 | while (len && isspace(*buf)) | |
298 | buf++, len--; | |
299 | while (len && isspace(buf[len-1])) | |
ed378ec7 LT |
300 | len--; |
301 | buf[len] = 0; | |
302 | memcpy(ref_buffer, buf, len + 1); | |
303 | ref = ref_buffer; | |
8da19775 JH |
304 | if (flag) |
305 | *flag |= REF_ISSYMREF; | |
8a65ff76 | 306 | } |
a876ed83 JH |
307 | if (len < 40 || get_sha1_hex(buffer, sha1)) |
308 | return NULL; | |
ed378ec7 | 309 | return ref; |
a876ed83 JH |
310 | } |
311 | ||
ed378ec7 | 312 | int create_symref(const char *ref_target, const char *refs_heads_master) |
8098a178 | 313 | { |
8098a178 JH |
314 | const char *lockpath; |
315 | char ref[1000]; | |
316 | int fd, len, written; | |
ed378ec7 | 317 | const char *git_HEAD = git_path("%s", ref_target); |
8098a178 | 318 | |
9f0bb90d JH |
319 | #ifndef NO_SYMLINK_HEAD |
320 | if (prefer_symlink_refs) { | |
f8348be3 JS |
321 | unlink(git_HEAD); |
322 | if (!symlink(refs_heads_master, git_HEAD)) | |
323 | return 0; | |
324 | fprintf(stderr, "no symlink - falling back to symbolic ref\n"); | |
325 | } | |
303958dc JS |
326 | #endif |
327 | ||
8098a178 JH |
328 | len = snprintf(ref, sizeof(ref), "ref: %s\n", refs_heads_master); |
329 | if (sizeof(ref) <= len) { | |
330 | error("refname too long: %s", refs_heads_master); | |
331 | return -1; | |
332 | } | |
333 | lockpath = mkpath("%s.lock", git_HEAD); | |
334 | fd = open(lockpath, O_CREAT | O_EXCL | O_WRONLY, 0666); | |
335 | written = write(fd, ref, len); | |
336 | close(fd); | |
337 | if (written != len) { | |
338 | unlink(lockpath); | |
339 | error("Unable to write to %s", lockpath); | |
340 | return -2; | |
341 | } | |
342 | if (rename(lockpath, git_HEAD) < 0) { | |
343 | unlink(lockpath); | |
344 | error("Unable to create %s", git_HEAD); | |
345 | return -3; | |
346 | } | |
138086a7 JH |
347 | if (adjust_shared_perm(git_HEAD)) { |
348 | unlink(lockpath); | |
349 | error("Unable to fix permissions on %s", lockpath); | |
350 | return -4; | |
351 | } | |
8098a178 | 352 | return 0; |
8098a178 JH |
353 | } |
354 | ||
ed378ec7 | 355 | int read_ref(const char *ref, unsigned char *sha1) |
a876ed83 | 356 | { |
8da19775 | 357 | if (resolve_ref(ref, sha1, 1, NULL)) |
a876ed83 JH |
358 | return 0; |
359 | return -1; | |
8a65ff76 LT |
360 | } |
361 | ||
ef06b918 JH |
362 | static int do_one_ref(const char *base, each_ref_fn fn, int trim, |
363 | void *cb_data, struct ref_list *entry) | |
364 | { | |
365 | if (strncmp(base, entry->name, trim)) | |
366 | return 0; | |
367 | if (is_null_sha1(entry->sha1)) | |
368 | return 0; | |
369 | if (!has_sha1_file(entry->sha1)) { | |
370 | error("%s does not point to a valid object!", entry->name); | |
371 | return 0; | |
372 | } | |
373 | return fn(entry->name + trim, entry->sha1, entry->flag, cb_data); | |
374 | } | |
375 | ||
cf0adba7 JH |
376 | int peel_ref(const char *ref, unsigned char *sha1) |
377 | { | |
378 | int flag; | |
379 | unsigned char base[20]; | |
380 | struct object *o; | |
381 | ||
382 | if (!resolve_ref(ref, base, 1, &flag)) | |
383 | return -1; | |
384 | ||
385 | if ((flag & REF_ISPACKED)) { | |
386 | struct ref_list *list = get_packed_refs(); | |
cf0adba7 JH |
387 | |
388 | while (list) { | |
f4204ab9 JH |
389 | if (!strcmp(list->name, ref)) { |
390 | if (list->flag & REF_KNOWS_PEELED) { | |
391 | hashcpy(sha1, list->peeled); | |
392 | return 0; | |
393 | } | |
394 | /* older pack-refs did not leave peeled ones */ | |
395 | break; | |
cf0adba7 JH |
396 | } |
397 | list = list->next; | |
398 | } | |
cf0adba7 JH |
399 | } |
400 | ||
f4204ab9 | 401 | /* fallback - callers should not call this for unpacked refs */ |
cf0adba7 JH |
402 | o = parse_object(base); |
403 | if (o->type == OBJ_TAG) { | |
404 | o = deref_tag(o, ref, 0); | |
405 | if (o) { | |
406 | hashcpy(sha1, o->sha1); | |
407 | return 0; | |
408 | } | |
409 | } | |
410 | return -1; | |
411 | } | |
412 | ||
8da19775 JH |
413 | static int do_for_each_ref(const char *base, each_ref_fn fn, int trim, |
414 | void *cb_data) | |
8a65ff76 | 415 | { |
e1e22e37 LT |
416 | int retval; |
417 | struct ref_list *packed = get_packed_refs(); | |
418 | struct ref_list *loose = get_loose_refs(); | |
8a65ff76 | 419 | |
e1e22e37 LT |
420 | while (packed && loose) { |
421 | struct ref_list *entry; | |
422 | int cmp = strcmp(packed->name, loose->name); | |
423 | if (!cmp) { | |
424 | packed = packed->next; | |
425 | continue; | |
6cada6a9 | 426 | } |
e1e22e37 LT |
427 | if (cmp > 0) { |
428 | entry = loose; | |
429 | loose = loose->next; | |
430 | } else { | |
431 | entry = packed; | |
432 | packed = packed->next; | |
433 | } | |
ef06b918 | 434 | retval = do_one_ref(base, fn, trim, cb_data, entry); |
e1e22e37 LT |
435 | if (retval) |
436 | return retval; | |
437 | } | |
8a65ff76 | 438 | |
ef06b918 JH |
439 | for (packed = packed ? packed : loose; packed; packed = packed->next) { |
440 | retval = do_one_ref(base, fn, trim, cb_data, packed); | |
441 | if (retval) | |
442 | return retval; | |
8a65ff76 | 443 | } |
e1e22e37 | 444 | return 0; |
8a65ff76 LT |
445 | } |
446 | ||
cb5d709f | 447 | int head_ref(each_ref_fn fn, void *cb_data) |
723c31fe LT |
448 | { |
449 | unsigned char sha1[20]; | |
8da19775 JH |
450 | int flag; |
451 | ||
452 | if (resolve_ref("HEAD", sha1, 1, &flag)) | |
453 | return fn("HEAD", sha1, flag, cb_data); | |
2f34ba32 | 454 | return 0; |
723c31fe LT |
455 | } |
456 | ||
cb5d709f | 457 | int for_each_ref(each_ref_fn fn, void *cb_data) |
8a65ff76 | 458 | { |
cb5d709f | 459 | return do_for_each_ref("refs/", fn, 0, cb_data); |
a62be77f SE |
460 | } |
461 | ||
cb5d709f | 462 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
a62be77f | 463 | { |
cb5d709f | 464 | return do_for_each_ref("refs/tags/", fn, 10, cb_data); |
a62be77f SE |
465 | } |
466 | ||
cb5d709f | 467 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
a62be77f | 468 | { |
cb5d709f | 469 | return do_for_each_ref("refs/heads/", fn, 11, cb_data); |
a62be77f SE |
470 | } |
471 | ||
cb5d709f | 472 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
a62be77f | 473 | { |
cb5d709f | 474 | return do_for_each_ref("refs/remotes/", fn, 13, cb_data); |
8a65ff76 LT |
475 | } |
476 | ||
cb5d709f JH |
477 | /* NEEDSWORK: This is only used by ssh-upload and it should go; the |
478 | * caller should do resolve_ref or read_ref like everybody else. Or | |
479 | * maybe everybody else should use get_ref_sha1() instead of doing | |
480 | * read_ref(). | |
481 | */ | |
95fc7512 DB |
482 | int get_ref_sha1(const char *ref, unsigned char *sha1) |
483 | { | |
95fc7512 DB |
484 | if (check_ref_format(ref)) |
485 | return -1; | |
ed378ec7 | 486 | return read_ref(mkpath("refs/%s", ref), sha1); |
95fc7512 DB |
487 | } |
488 | ||
03feddd6 JH |
489 | /* |
490 | * Make sure "ref" is something reasonable to have under ".git/refs/"; | |
491 | * We do not like it if: | |
492 | * | |
493 | * - any path component of it begins with ".", or | |
494 | * - it has double dots "..", or | |
495 | * - it has ASCII control character, "~", "^", ":" or SP, anywhere, or | |
496 | * - it ends with a "/". | |
497 | */ | |
498 | ||
499 | static inline int bad_ref_char(int ch) | |
500 | { | |
501 | return (((unsigned) ch) <= ' ' || | |
68283999 JH |
502 | ch == '~' || ch == '^' || ch == ':' || |
503 | /* 2.13 Pattern Matching Notation */ | |
504 | ch == '?' || ch == '*' || ch == '['); | |
03feddd6 JH |
505 | } |
506 | ||
95fc7512 DB |
507 | int check_ref_format(const char *ref) |
508 | { | |
03feddd6 JH |
509 | int ch, level; |
510 | const char *cp = ref; | |
511 | ||
512 | level = 0; | |
513 | while (1) { | |
514 | while ((ch = *cp++) == '/') | |
515 | ; /* tolerate duplicated slashes */ | |
516 | if (!ch) | |
517 | return -1; /* should not end with slashes */ | |
518 | ||
519 | /* we are at the beginning of the path component */ | |
520 | if (ch == '.' || bad_ref_char(ch)) | |
521 | return -1; | |
522 | ||
523 | /* scan the rest of the path component */ | |
524 | while ((ch = *cp++) != 0) { | |
525 | if (bad_ref_char(ch)) | |
526 | return -1; | |
527 | if (ch == '/') | |
528 | break; | |
529 | if (ch == '.' && *cp == '.') | |
530 | return -1; | |
531 | } | |
532 | level++; | |
533 | if (!ch) { | |
534 | if (level < 2) | |
37adac76 | 535 | return -2; /* at least of form "heads/blah" */ |
03feddd6 JH |
536 | return 0; |
537 | } | |
538 | } | |
95fc7512 DB |
539 | } |
540 | ||
e5f38ec3 | 541 | static struct ref_lock *verify_lock(struct ref_lock *lock, |
4bd18c43 SP |
542 | const unsigned char *old_sha1, int mustexist) |
543 | { | |
8da19775 | 544 | if (!resolve_ref(lock->ref_name, lock->old_sha1, mustexist, NULL)) { |
434cd0cd | 545 | error("Can't verify ref %s", lock->ref_name); |
4bd18c43 SP |
546 | unlock_ref(lock); |
547 | return NULL; | |
548 | } | |
a89fccd2 | 549 | if (hashcmp(lock->old_sha1, old_sha1)) { |
434cd0cd | 550 | error("Ref %s is at %s but expected %s", lock->ref_name, |
4bd18c43 SP |
551 | sha1_to_hex(lock->old_sha1), sha1_to_hex(old_sha1)); |
552 | unlock_ref(lock); | |
553 | return NULL; | |
554 | } | |
555 | return lock; | |
556 | } | |
557 | ||
bc7127ef JH |
558 | static int remove_empty_dir_recursive(char *path, int len) |
559 | { | |
560 | DIR *dir = opendir(path); | |
561 | struct dirent *e; | |
562 | int ret = 0; | |
563 | ||
564 | if (!dir) | |
565 | return -1; | |
566 | if (path[len-1] != '/') | |
567 | path[len++] = '/'; | |
568 | while ((e = readdir(dir)) != NULL) { | |
569 | struct stat st; | |
570 | int namlen; | |
571 | if ((e->d_name[0] == '.') && | |
572 | ((e->d_name[1] == 0) || | |
573 | ((e->d_name[1] == '.') && e->d_name[2] == 0))) | |
574 | continue; /* "." and ".." */ | |
575 | ||
576 | namlen = strlen(e->d_name); | |
577 | if ((len + namlen < PATH_MAX) && | |
578 | strcpy(path + len, e->d_name) && | |
579 | !lstat(path, &st) && | |
580 | S_ISDIR(st.st_mode) && | |
28bed6ea | 581 | !remove_empty_dir_recursive(path, len + namlen)) |
bc7127ef JH |
582 | continue; /* happy */ |
583 | ||
584 | /* path too long, stat fails, or non-directory still exists */ | |
585 | ret = -1; | |
586 | break; | |
587 | } | |
588 | closedir(dir); | |
589 | if (!ret) { | |
590 | path[len] = 0; | |
591 | ret = rmdir(path); | |
592 | } | |
593 | return ret; | |
594 | } | |
595 | ||
596 | static int remove_empty_directories(char *file) | |
597 | { | |
598 | /* we want to create a file but there is a directory there; | |
599 | * if that is an empty directory (or a directory that contains | |
600 | * only empty directories), remove them. | |
601 | */ | |
602 | char path[PATH_MAX]; | |
603 | int len = strlen(file); | |
604 | ||
605 | if (len >= PATH_MAX) /* path too long ;-) */ | |
606 | return -1; | |
607 | strcpy(path, file); | |
608 | return remove_empty_dir_recursive(path, len); | |
609 | } | |
610 | ||
c976d415 LH |
611 | static int is_refname_available(const char *ref, const char *oldref, |
612 | struct ref_list *list, int quiet) | |
613 | { | |
614 | int namlen = strlen(ref); /* e.g. 'foo/bar' */ | |
615 | while (list) { | |
616 | /* list->name could be 'foo' or 'foo/bar/baz' */ | |
617 | if (!oldref || strcmp(oldref, list->name)) { | |
618 | int len = strlen(list->name); | |
619 | int cmplen = (namlen < len) ? namlen : len; | |
620 | const char *lead = (namlen < len) ? list->name : ref; | |
621 | if (!strncmp(ref, list->name, cmplen) && | |
622 | lead[cmplen] == '/') { | |
623 | if (!quiet) | |
624 | error("'%s' exists; cannot create '%s'", | |
625 | list->name, ref); | |
626 | return 0; | |
627 | } | |
628 | } | |
629 | list = list->next; | |
630 | } | |
631 | return 1; | |
632 | } | |
633 | ||
c0277d15 | 634 | static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int *flag) |
4bd18c43 | 635 | { |
434cd0cd | 636 | char *ref_file; |
ed378ec7 | 637 | const char *orig_ref = ref; |
4bd18c43 | 638 | struct ref_lock *lock; |
732232a1 | 639 | struct stat st; |
5cc3cef9 | 640 | int last_errno = 0; |
4431fcc4 | 641 | int mustexist = (old_sha1 && !is_null_sha1(old_sha1)); |
4bd18c43 SP |
642 | |
643 | lock = xcalloc(1, sizeof(struct ref_lock)); | |
644 | lock->lock_fd = -1; | |
645 | ||
c0277d15 | 646 | ref = resolve_ref(ref, lock->old_sha1, mustexist, flag); |
bc7127ef JH |
647 | if (!ref && errno == EISDIR) { |
648 | /* we are trying to lock foo but we used to | |
649 | * have foo/bar which now does not exist; | |
650 | * it is normal for the empty directory 'foo' | |
651 | * to remain. | |
652 | */ | |
653 | ref_file = git_path("%s", orig_ref); | |
5cc3cef9 JH |
654 | if (remove_empty_directories(ref_file)) { |
655 | last_errno = errno; | |
656 | error("there are still refs under '%s'", orig_ref); | |
657 | goto error_return; | |
658 | } | |
c0277d15 | 659 | ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, flag); |
bc7127ef | 660 | } |
ed378ec7 | 661 | if (!ref) { |
5cc3cef9 | 662 | last_errno = errno; |
818f477c | 663 | error("unable to resolve reference %s: %s", |
ed378ec7 | 664 | orig_ref, strerror(errno)); |
5cc3cef9 | 665 | goto error_return; |
4bd18c43 | 666 | } |
c976d415 LH |
667 | /* When the ref did not exist and we are creating it, |
668 | * make sure there is no existing ref that is packed | |
669 | * whose name begins with our refname, nor a ref whose | |
670 | * name is a proper prefix of our refname. | |
671 | */ | |
672 | if (is_null_sha1(lock->old_sha1) && | |
673 | !is_refname_available(ref, NULL, get_packed_refs(), 0)) | |
674 | goto error_return; | |
22a3844e | 675 | |
c33d5174 | 676 | lock->lk = xcalloc(1, sizeof(struct lock_file)); |
4bd18c43 | 677 | |
434cd0cd | 678 | lock->ref_name = xstrdup(ref); |
ed378ec7 | 679 | lock->log_file = xstrdup(git_path("logs/%s", ref)); |
7c1a278d | 680 | ref_file = git_path("%s", ref); |
434cd0cd | 681 | lock->force_write = lstat(ref_file, &st) && errno == ENOENT; |
4bd18c43 | 682 | |
5cc3cef9 JH |
683 | if (safe_create_leading_directories(ref_file)) { |
684 | last_errno = errno; | |
685 | error("unable to create directory for %s", ref_file); | |
686 | goto error_return; | |
687 | } | |
434cd0cd | 688 | lock->lock_fd = hold_lock_file_for_update(lock->lk, ref_file, 1); |
4bd18c43 SP |
689 | |
690 | return old_sha1 ? verify_lock(lock, old_sha1, mustexist) : lock; | |
5cc3cef9 JH |
691 | |
692 | error_return: | |
693 | unlock_ref(lock); | |
694 | errno = last_errno; | |
695 | return NULL; | |
4bd18c43 SP |
696 | } |
697 | ||
4431fcc4 | 698 | struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1) |
95fc7512 | 699 | { |
53cce84c | 700 | char refpath[PATH_MAX]; |
95fc7512 | 701 | if (check_ref_format(ref)) |
4bd18c43 | 702 | return NULL; |
53cce84c | 703 | strcpy(refpath, mkpath("refs/%s", ref)); |
c0277d15 | 704 | return lock_ref_sha1_basic(refpath, old_sha1, NULL); |
4bd18c43 SP |
705 | } |
706 | ||
4431fcc4 | 707 | struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1) |
4bd18c43 | 708 | { |
c0277d15 JH |
709 | return lock_ref_sha1_basic(ref, old_sha1, NULL); |
710 | } | |
711 | ||
26a063a1 JH |
712 | static struct lock_file packlock; |
713 | ||
c0277d15 JH |
714 | static int repack_without_ref(const char *refname) |
715 | { | |
716 | struct ref_list *list, *packed_ref_list; | |
717 | int fd; | |
718 | int found = 0; | |
c0277d15 JH |
719 | |
720 | packed_ref_list = get_packed_refs(); | |
721 | for (list = packed_ref_list; list; list = list->next) { | |
722 | if (!strcmp(refname, list->name)) { | |
723 | found = 1; | |
724 | break; | |
725 | } | |
726 | } | |
727 | if (!found) | |
728 | return 0; | |
729 | memset(&packlock, 0, sizeof(packlock)); | |
730 | fd = hold_lock_file_for_update(&packlock, git_path("packed-refs"), 0); | |
731 | if (fd < 0) | |
732 | return error("cannot delete '%s' from packed refs", refname); | |
733 | ||
734 | for (list = packed_ref_list; list; list = list->next) { | |
735 | char line[PATH_MAX + 100]; | |
736 | int len; | |
737 | ||
738 | if (!strcmp(refname, list->name)) | |
739 | continue; | |
740 | len = snprintf(line, sizeof(line), "%s %s\n", | |
741 | sha1_to_hex(list->sha1), list->name); | |
742 | /* this should not happen but just being defensive */ | |
743 | if (len > sizeof(line)) | |
744 | die("too long a refname '%s'", list->name); | |
745 | write_or_die(fd, line, len); | |
746 | } | |
747 | return commit_lock_file(&packlock); | |
748 | } | |
749 | ||
750 | int delete_ref(const char *refname, unsigned char *sha1) | |
751 | { | |
752 | struct ref_lock *lock; | |
753 | int err, i, ret = 0, flag = 0; | |
754 | ||
755 | lock = lock_ref_sha1_basic(refname, sha1, &flag); | |
756 | if (!lock) | |
757 | return 1; | |
758 | if (!(flag & REF_ISPACKED)) { | |
759 | /* loose */ | |
760 | i = strlen(lock->lk->filename) - 5; /* .lock */ | |
761 | lock->lk->filename[i] = 0; | |
762 | err = unlink(lock->lk->filename); | |
763 | if (err) { | |
764 | ret = 1; | |
765 | error("unlink(%s) failed: %s", | |
766 | lock->lk->filename, strerror(errno)); | |
767 | } | |
768 | lock->lk->filename[i] = '.'; | |
769 | } | |
770 | /* removing the loose one could have resurrected an earlier | |
771 | * packed one. Also, if it was not loose we need to repack | |
772 | * without it. | |
773 | */ | |
774 | ret |= repack_without_ref(refname); | |
775 | ||
776 | err = unlink(lock->log_file); | |
777 | if (err && errno != ENOENT) | |
778 | fprintf(stderr, "warning: unlink(%s) failed: %s", | |
779 | lock->log_file, strerror(errno)); | |
780 | invalidate_cached_refs(); | |
781 | unlock_ref(lock); | |
782 | return ret; | |
4bd18c43 SP |
783 | } |
784 | ||
678d0f4c | 785 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) |
c976d415 LH |
786 | { |
787 | static const char renamed_ref[] = "RENAMED-REF"; | |
788 | unsigned char sha1[20], orig_sha1[20]; | |
789 | int flag = 0, logmoved = 0; | |
790 | struct ref_lock *lock; | |
c976d415 | 791 | struct stat loginfo; |
16c2bfbb | 792 | int log = !lstat(git_path("logs/%s", oldref), &loginfo); |
c976d415 LH |
793 | |
794 | if (S_ISLNK(loginfo.st_mode)) | |
795 | return error("reflog for %s is a symlink", oldref); | |
796 | ||
797 | if (!resolve_ref(oldref, orig_sha1, 1, &flag)) | |
798 | return error("refname %s not found", oldref); | |
799 | ||
800 | if (!is_refname_available(newref, oldref, get_packed_refs(), 0)) | |
801 | return 1; | |
802 | ||
803 | if (!is_refname_available(newref, oldref, get_loose_refs(), 0)) | |
804 | return 1; | |
805 | ||
c976d415 LH |
806 | lock = lock_ref_sha1_basic(renamed_ref, NULL, NULL); |
807 | if (!lock) | |
808 | return error("unable to lock %s", renamed_ref); | |
809 | lock->force_write = 1; | |
678d0f4c | 810 | if (write_ref_sha1(lock, orig_sha1, logmsg)) |
c976d415 LH |
811 | return error("unable to save current sha1 in %s", renamed_ref); |
812 | ||
813 | if (log && rename(git_path("logs/%s", oldref), git_path("tmp-renamed-log"))) | |
814 | return error("unable to move logfile logs/%s to tmp-renamed-log: %s", | |
815 | oldref, strerror(errno)); | |
816 | ||
817 | if (delete_ref(oldref, orig_sha1)) { | |
818 | error("unable to delete old %s", oldref); | |
819 | goto rollback; | |
820 | } | |
821 | ||
822 | if (resolve_ref(newref, sha1, 1, &flag) && delete_ref(newref, sha1)) { | |
823 | if (errno==EISDIR) { | |
824 | if (remove_empty_directories(git_path("%s", newref))) { | |
825 | error("Directory not empty: %s", newref); | |
826 | goto rollback; | |
827 | } | |
828 | } else { | |
829 | error("unable to delete existing %s", newref); | |
830 | goto rollback; | |
831 | } | |
832 | } | |
833 | ||
834 | if (log && safe_create_leading_directories(git_path("logs/%s", newref))) { | |
835 | error("unable to create directory for %s", newref); | |
836 | goto rollback; | |
837 | } | |
838 | ||
839 | retry: | |
840 | if (log && rename(git_path("tmp-renamed-log"), git_path("logs/%s", newref))) { | |
841 | if (errno==EISDIR) { | |
842 | if (remove_empty_directories(git_path("logs/%s", newref))) { | |
843 | error("Directory not empty: logs/%s", newref); | |
844 | goto rollback; | |
845 | } | |
846 | goto retry; | |
847 | } else { | |
848 | error("unable to move logfile tmp-renamed-log to logs/%s: %s", | |
849 | newref, strerror(errno)); | |
850 | goto rollback; | |
851 | } | |
852 | } | |
853 | logmoved = log; | |
854 | ||
855 | lock = lock_ref_sha1_basic(newref, NULL, NULL); | |
856 | if (!lock) { | |
857 | error("unable to lock %s for update", newref); | |
858 | goto rollback; | |
859 | } | |
860 | ||
861 | lock->force_write = 1; | |
862 | hashcpy(lock->old_sha1, orig_sha1); | |
678d0f4c | 863 | if (write_ref_sha1(lock, orig_sha1, logmsg)) { |
c976d415 LH |
864 | error("unable to write current sha1 into %s", newref); |
865 | goto rollback; | |
866 | } | |
867 | ||
dc81c58c JS |
868 | if (!strncmp(oldref, "refs/heads/", 11) && |
869 | !strncmp(newref, "refs/heads/", 11)) { | |
870 | char oldsection[1024], newsection[1024]; | |
871 | ||
872 | snprintf(oldsection, 1024, "branch.%s", oldref + 11); | |
873 | snprintf(newsection, 1024, "branch.%s", newref + 11); | |
874 | if (git_config_rename_section(oldsection, newsection) < 0) | |
875 | return 1; | |
876 | } | |
877 | ||
c976d415 LH |
878 | return 0; |
879 | ||
880 | rollback: | |
881 | lock = lock_ref_sha1_basic(oldref, NULL, NULL); | |
882 | if (!lock) { | |
883 | error("unable to lock %s for rollback", oldref); | |
884 | goto rollbacklog; | |
885 | } | |
886 | ||
887 | lock->force_write = 1; | |
888 | flag = log_all_ref_updates; | |
889 | log_all_ref_updates = 0; | |
890 | if (write_ref_sha1(lock, orig_sha1, NULL)) | |
891 | error("unable to write current sha1 into %s", oldref); | |
892 | log_all_ref_updates = flag; | |
893 | ||
894 | rollbacklog: | |
895 | if (logmoved && rename(git_path("logs/%s", newref), git_path("logs/%s", oldref))) | |
896 | error("unable to restore logfile %s from %s: %s", | |
897 | oldref, newref, strerror(errno)); | |
898 | if (!logmoved && log && | |
899 | rename(git_path("tmp-renamed-log"), git_path("logs/%s", oldref))) | |
900 | error("unable to restore logfile %s from tmp-renamed-log: %s", | |
901 | oldref, strerror(errno)); | |
902 | ||
903 | return 1; | |
904 | } | |
905 | ||
e5f38ec3 | 906 | void unlock_ref(struct ref_lock *lock) |
4bd18c43 SP |
907 | { |
908 | if (lock->lock_fd >= 0) { | |
909 | close(lock->lock_fd); | |
c33d5174 JH |
910 | /* Do not free lock->lk -- atexit() still looks at them */ |
911 | if (lock->lk) | |
912 | rollback_lock_file(lock->lk); | |
4bd18c43 | 913 | } |
434cd0cd | 914 | free(lock->ref_name); |
4cac42b1 | 915 | free(lock->log_file); |
4bd18c43 SP |
916 | free(lock); |
917 | } | |
918 | ||
6de08ae6 SP |
919 | static int log_ref_write(struct ref_lock *lock, |
920 | const unsigned char *sha1, const char *msg) | |
921 | { | |
922 | int logfd, written, oflags = O_APPEND | O_WRONLY; | |
923 | unsigned maxlen, len; | |
924 | char *logrec; | |
ff4c8485 | 925 | const char *committer; |
6de08ae6 | 926 | |
4057deb5 JH |
927 | if (log_all_ref_updates && |
928 | !strncmp(lock->ref_name, "refs/heads/", 11)) { | |
6de08ae6 SP |
929 | if (safe_create_leading_directories(lock->log_file) < 0) |
930 | return error("unable to create directory for %s", | |
931 | lock->log_file); | |
932 | oflags |= O_CREAT; | |
933 | } | |
934 | ||
935 | logfd = open(lock->log_file, oflags, 0666); | |
936 | if (logfd < 0) { | |
1974bf62 | 937 | if (!(oflags & O_CREAT) && errno == ENOENT) |
6de08ae6 | 938 | return 0; |
3b463c3f JH |
939 | |
940 | if ((oflags & O_CREAT) && errno == EISDIR) { | |
941 | if (remove_empty_directories(lock->log_file)) { | |
942 | return error("There are still logs under '%s'", | |
943 | lock->log_file); | |
944 | } | |
945 | logfd = open(lock->log_file, oflags, 0666); | |
946 | } | |
947 | ||
948 | if (logfd < 0) | |
949 | return error("Unable to append to %s: %s", | |
950 | lock->log_file, strerror(errno)); | |
6de08ae6 SP |
951 | } |
952 | ||
ff4c8485 | 953 | committer = git_committer_info(1); |
6de08ae6 | 954 | if (msg) { |
ff4c8485 | 955 | maxlen = strlen(committer) + strlen(msg) + 2*40 + 5; |
6de08ae6 SP |
956 | logrec = xmalloc(maxlen); |
957 | len = snprintf(logrec, maxlen, "%s %s %s\t%s\n", | |
958 | sha1_to_hex(lock->old_sha1), | |
959 | sha1_to_hex(sha1), | |
ff4c8485 | 960 | committer, |
6de08ae6 | 961 | msg); |
e5f38ec3 JH |
962 | } |
963 | else { | |
ff4c8485 | 964 | maxlen = strlen(committer) + 2*40 + 4; |
6de08ae6 SP |
965 | logrec = xmalloc(maxlen); |
966 | len = snprintf(logrec, maxlen, "%s %s %s\n", | |
967 | sha1_to_hex(lock->old_sha1), | |
968 | sha1_to_hex(sha1), | |
ff4c8485 | 969 | committer); |
6de08ae6 SP |
970 | } |
971 | written = len <= maxlen ? write(logfd, logrec, len) : -1; | |
972 | free(logrec); | |
973 | close(logfd); | |
974 | if (written != len) | |
975 | return error("Unable to append to %s", lock->log_file); | |
976 | return 0; | |
977 | } | |
978 | ||
4bd18c43 SP |
979 | int write_ref_sha1(struct ref_lock *lock, |
980 | const unsigned char *sha1, const char *logmsg) | |
981 | { | |
982 | static char term = '\n'; | |
983 | ||
984 | if (!lock) | |
95fc7512 | 985 | return -1; |
a89fccd2 | 986 | if (!lock->force_write && !hashcmp(lock->old_sha1, sha1)) { |
4bd18c43 SP |
987 | unlock_ref(lock); |
988 | return 0; | |
95fc7512 | 989 | } |
4bd18c43 SP |
990 | if (write(lock->lock_fd, sha1_to_hex(sha1), 40) != 40 || |
991 | write(lock->lock_fd, &term, 1) != 1 | |
992 | || close(lock->lock_fd) < 0) { | |
c33d5174 | 993 | error("Couldn't write %s", lock->lk->filename); |
4bd18c43 SP |
994 | unlock_ref(lock); |
995 | return -1; | |
996 | } | |
5e290ff7 | 997 | invalidate_cached_refs(); |
6de08ae6 SP |
998 | if (log_ref_write(lock, sha1, logmsg) < 0) { |
999 | unlock_ref(lock); | |
1000 | return -1; | |
1001 | } | |
c33d5174 | 1002 | if (commit_lock_file(lock->lk)) { |
434cd0cd | 1003 | error("Couldn't set %s", lock->ref_name); |
4bd18c43 SP |
1004 | unlock_ref(lock); |
1005 | return -1; | |
1006 | } | |
1007 | lock->lock_fd = -1; | |
1008 | unlock_ref(lock); | |
1009 | return 0; | |
95fc7512 | 1010 | } |
d556fae2 | 1011 | |
ab2a1a32 | 1012 | int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1) |
d556fae2 | 1013 | { |
e5229042 | 1014 | const char *logfile, *logdata, *logend, *rec, *lastgt, *lastrec; |
d556fae2 SP |
1015 | char *tz_c; |
1016 | int logfd, tz; | |
1017 | struct stat st; | |
1018 | unsigned long date; | |
e5229042 | 1019 | unsigned char logged_sha1[20]; |
d556fae2 SP |
1020 | |
1021 | logfile = git_path("logs/%s", ref); | |
1022 | logfd = open(logfile, O_RDONLY, 0); | |
1023 | if (logfd < 0) | |
1024 | die("Unable to read log %s: %s", logfile, strerror(errno)); | |
1025 | fstat(logfd, &st); | |
1026 | if (!st.st_size) | |
1027 | die("Log %s is empty.", logfile); | |
1028 | logdata = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, logfd, 0); | |
1029 | close(logfd); | |
1030 | ||
e5229042 | 1031 | lastrec = NULL; |
d556fae2 SP |
1032 | rec = logend = logdata + st.st_size; |
1033 | while (logdata < rec) { | |
1034 | if (logdata < rec && *(rec-1) == '\n') | |
1035 | rec--; | |
e5229042 SP |
1036 | lastgt = NULL; |
1037 | while (logdata < rec && *(rec-1) != '\n') { | |
d556fae2 | 1038 | rec--; |
e5229042 SP |
1039 | if (*rec == '>') |
1040 | lastgt = rec; | |
1041 | } | |
1042 | if (!lastgt) | |
d556fae2 | 1043 | die("Log %s is corrupt.", logfile); |
e5229042 | 1044 | date = strtoul(lastgt + 1, &tz_c, 10); |
ab2a1a32 | 1045 | if (date <= at_time || cnt == 0) { |
e5229042 SP |
1046 | if (lastrec) { |
1047 | if (get_sha1_hex(lastrec, logged_sha1)) | |
1048 | die("Log %s is corrupt.", logfile); | |
1049 | if (get_sha1_hex(rec + 41, sha1)) | |
1050 | die("Log %s is corrupt.", logfile); | |
a89fccd2 | 1051 | if (hashcmp(logged_sha1, sha1)) { |
e5229042 SP |
1052 | tz = strtoul(tz_c, NULL, 10); |
1053 | fprintf(stderr, | |
1054 | "warning: Log %s has gap after %s.\n", | |
1055 | logfile, show_rfc2822_date(date, tz)); | |
1056 | } | |
e5f38ec3 JH |
1057 | } |
1058 | else if (date == at_time) { | |
e5229042 SP |
1059 | if (get_sha1_hex(rec + 41, sha1)) |
1060 | die("Log %s is corrupt.", logfile); | |
e5f38ec3 JH |
1061 | } |
1062 | else { | |
e5229042 SP |
1063 | if (get_sha1_hex(rec + 41, logged_sha1)) |
1064 | die("Log %s is corrupt.", logfile); | |
a89fccd2 | 1065 | if (hashcmp(logged_sha1, sha1)) { |
e5229042 SP |
1066 | tz = strtoul(tz_c, NULL, 10); |
1067 | fprintf(stderr, | |
1068 | "warning: Log %s unexpectedly ended on %s.\n", | |
1069 | logfile, show_rfc2822_date(date, tz)); | |
1070 | } | |
1071 | } | |
d556fae2 SP |
1072 | munmap((void*)logdata, st.st_size); |
1073 | return 0; | |
1074 | } | |
e5229042 | 1075 | lastrec = rec; |
ab2a1a32 JH |
1076 | if (cnt > 0) |
1077 | cnt--; | |
d556fae2 SP |
1078 | } |
1079 | ||
e5229042 SP |
1080 | rec = logdata; |
1081 | while (rec < logend && *rec != '>' && *rec != '\n') | |
1082 | rec++; | |
1083 | if (rec == logend || *rec == '\n') | |
d556fae2 | 1084 | die("Log %s is corrupt.", logfile); |
e5229042 | 1085 | date = strtoul(rec + 1, &tz_c, 10); |
d556fae2 SP |
1086 | tz = strtoul(tz_c, NULL, 10); |
1087 | if (get_sha1_hex(logdata, sha1)) | |
1088 | die("Log %s is corrupt.", logfile); | |
1089 | munmap((void*)logdata, st.st_size); | |
1090 | fprintf(stderr, "warning: Log %s only goes back to %s.\n", | |
1091 | logfile, show_rfc2822_date(date, tz)); | |
1092 | return 0; | |
1093 | } |