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Commit | Line | Data |
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95fc7512 DB |
1 | #include "refs.h" |
2 | #include "cache.h" | |
cf0adba7 JH |
3 | #include "object.h" |
4 | #include "tag.h" | |
95fc7512 DB |
5 | |
6 | #include <errno.h> | |
7 | ||
f4204ab9 JH |
8 | /* ISSYMREF=01 and ISPACKED=02 are public interfaces */ |
9 | #define REF_KNOWS_PEELED 04 | |
10 | ||
e1e22e37 LT |
11 | struct ref_list { |
12 | struct ref_list *next; | |
f4204ab9 | 13 | unsigned char flag; /* ISSYMREF? ISPACKED? */ |
e1e22e37 | 14 | unsigned char sha1[20]; |
f4204ab9 | 15 | unsigned char peeled[20]; |
e1e22e37 LT |
16 | char name[FLEX_ARRAY]; |
17 | }; | |
18 | ||
f4204ab9 | 19 | static const char *parse_ref_line(char *line, unsigned char *sha1) |
e1e22e37 LT |
20 | { |
21 | /* | |
22 | * 42: the answer to everything. | |
23 | * | |
24 | * In this case, it happens to be the answer to | |
25 | * 40 (length of sha1 hex representation) | |
26 | * +1 (space in between hex and name) | |
27 | * +1 (newline at the end of the line) | |
28 | */ | |
29 | int len = strlen(line) - 42; | |
30 | ||
31 | if (len <= 0) | |
32 | return NULL; | |
33 | if (get_sha1_hex(line, sha1) < 0) | |
34 | return NULL; | |
35 | if (!isspace(line[40])) | |
36 | return NULL; | |
37 | line += 41; | |
f4204ab9 JH |
38 | if (isspace(*line)) |
39 | return NULL; | |
e1e22e37 LT |
40 | if (line[len] != '\n') |
41 | return NULL; | |
42 | line[len] = 0; | |
cf0adba7 | 43 | |
e1e22e37 LT |
44 | return line; |
45 | } | |
46 | ||
8da19775 | 47 | static struct ref_list *add_ref(const char *name, const unsigned char *sha1, |
f4204ab9 JH |
48 | int flag, struct ref_list *list, |
49 | struct ref_list **new_entry) | |
e1e22e37 LT |
50 | { |
51 | int len; | |
52 | struct ref_list **p = &list, *entry; | |
53 | ||
54 | /* Find the place to insert the ref into.. */ | |
55 | while ((entry = *p) != NULL) { | |
56 | int cmp = strcmp(entry->name, name); | |
57 | if (cmp > 0) | |
58 | break; | |
59 | ||
60 | /* Same as existing entry? */ | |
f4204ab9 JH |
61 | if (!cmp) { |
62 | if (new_entry) | |
63 | *new_entry = entry; | |
e1e22e37 | 64 | return list; |
f4204ab9 | 65 | } |
e1e22e37 LT |
66 | p = &entry->next; |
67 | } | |
68 | ||
69 | /* Allocate it and add it in.. */ | |
70 | len = strlen(name) + 1; | |
71 | entry = xmalloc(sizeof(struct ref_list) + len); | |
72 | hashcpy(entry->sha1, sha1); | |
f4204ab9 | 73 | hashclr(entry->peeled); |
e1e22e37 | 74 | memcpy(entry->name, name, len); |
8da19775 | 75 | entry->flag = flag; |
e1e22e37 LT |
76 | entry->next = *p; |
77 | *p = entry; | |
f4204ab9 JH |
78 | if (new_entry) |
79 | *new_entry = entry; | |
e1e22e37 LT |
80 | return list; |
81 | } | |
82 | ||
5e290ff7 JH |
83 | /* |
84 | * Future: need to be in "struct repository" | |
85 | * when doing a full libification. | |
86 | */ | |
87 | struct cached_refs { | |
88 | char did_loose; | |
89 | char did_packed; | |
90 | struct ref_list *loose; | |
91 | struct ref_list *packed; | |
92 | } cached_refs; | |
93 | ||
94 | static void free_ref_list(struct ref_list *list) | |
95 | { | |
96 | struct ref_list *next; | |
97 | for ( ; list; list = next) { | |
98 | next = list->next; | |
99 | free(list); | |
100 | } | |
101 | } | |
102 | ||
103 | static void invalidate_cached_refs(void) | |
e1e22e37 | 104 | { |
5e290ff7 JH |
105 | struct cached_refs *ca = &cached_refs; |
106 | ||
107 | if (ca->did_loose && ca->loose) | |
108 | free_ref_list(ca->loose); | |
109 | if (ca->did_packed && ca->packed) | |
110 | free_ref_list(ca->packed); | |
111 | ca->loose = ca->packed = NULL; | |
112 | ca->did_loose = ca->did_packed = 0; | |
113 | } | |
e1e22e37 | 114 | |
f4204ab9 JH |
115 | static void read_packed_refs(FILE *f, struct cached_refs *cached_refs) |
116 | { | |
117 | struct ref_list *list = NULL; | |
118 | struct ref_list *last = NULL; | |
119 | char refline[PATH_MAX]; | |
120 | int flag = REF_ISPACKED; | |
121 | ||
122 | while (fgets(refline, sizeof(refline), f)) { | |
123 | unsigned char sha1[20]; | |
124 | const char *name; | |
125 | static const char header[] = "# pack-refs with:"; | |
126 | ||
127 | if (!strncmp(refline, header, sizeof(header)-1)) { | |
128 | const char *traits = refline + sizeof(header) - 1; | |
129 | if (strstr(traits, " peeled ")) | |
130 | flag |= REF_KNOWS_PEELED; | |
131 | /* perhaps other traits later as well */ | |
132 | continue; | |
133 | } | |
134 | ||
135 | name = parse_ref_line(refline, sha1); | |
136 | if (name) { | |
137 | list = add_ref(name, sha1, flag, list, &last); | |
138 | continue; | |
139 | } | |
140 | if (last && | |
141 | refline[0] == '^' && | |
142 | strlen(refline) == 42 && | |
143 | refline[41] == '\n' && | |
144 | !get_sha1_hex(refline + 1, sha1)) | |
145 | hashcpy(last->peeled, sha1); | |
146 | } | |
147 | cached_refs->packed = list; | |
148 | } | |
149 | ||
5e290ff7 JH |
150 | static struct ref_list *get_packed_refs(void) |
151 | { | |
152 | if (!cached_refs.did_packed) { | |
e1e22e37 | 153 | FILE *f = fopen(git_path("packed-refs"), "r"); |
f4204ab9 | 154 | cached_refs.packed = NULL; |
e1e22e37 | 155 | if (f) { |
f4204ab9 | 156 | read_packed_refs(f, &cached_refs); |
e1e22e37 | 157 | fclose(f); |
e1e22e37 | 158 | } |
5e290ff7 | 159 | cached_refs.did_packed = 1; |
e1e22e37 | 160 | } |
5e290ff7 | 161 | return cached_refs.packed; |
e1e22e37 LT |
162 | } |
163 | ||
164 | static struct ref_list *get_ref_dir(const char *base, struct ref_list *list) | |
165 | { | |
166 | DIR *dir = opendir(git_path("%s", base)); | |
167 | ||
168 | if (dir) { | |
169 | struct dirent *de; | |
170 | int baselen = strlen(base); | |
ed378ec7 | 171 | char *ref = xmalloc(baselen + 257); |
e1e22e37 | 172 | |
ed378ec7 | 173 | memcpy(ref, base, baselen); |
e1e22e37 | 174 | if (baselen && base[baselen-1] != '/') |
ed378ec7 | 175 | ref[baselen++] = '/'; |
e1e22e37 LT |
176 | |
177 | while ((de = readdir(dir)) != NULL) { | |
178 | unsigned char sha1[20]; | |
179 | struct stat st; | |
8da19775 | 180 | int flag; |
e1e22e37 LT |
181 | int namelen; |
182 | ||
183 | if (de->d_name[0] == '.') | |
184 | continue; | |
185 | namelen = strlen(de->d_name); | |
186 | if (namelen > 255) | |
187 | continue; | |
188 | if (has_extension(de->d_name, ".lock")) | |
189 | continue; | |
ed378ec7 LT |
190 | memcpy(ref + baselen, de->d_name, namelen+1); |
191 | if (stat(git_path("%s", ref), &st) < 0) | |
e1e22e37 LT |
192 | continue; |
193 | if (S_ISDIR(st.st_mode)) { | |
ed378ec7 | 194 | list = get_ref_dir(ref, list); |
e1e22e37 LT |
195 | continue; |
196 | } | |
8da19775 | 197 | if (!resolve_ref(ref, sha1, 1, &flag)) { |
ed378ec7 | 198 | error("%s points nowhere!", ref); |
e1e22e37 LT |
199 | continue; |
200 | } | |
f4204ab9 | 201 | list = add_ref(ref, sha1, flag, list, NULL); |
e1e22e37 | 202 | } |
ed378ec7 | 203 | free(ref); |
e1e22e37 LT |
204 | closedir(dir); |
205 | } | |
206 | return list; | |
207 | } | |
208 | ||
209 | static struct ref_list *get_loose_refs(void) | |
210 | { | |
5e290ff7 JH |
211 | if (!cached_refs.did_loose) { |
212 | cached_refs.loose = get_ref_dir("refs", NULL); | |
213 | cached_refs.did_loose = 1; | |
e1e22e37 | 214 | } |
5e290ff7 | 215 | return cached_refs.loose; |
e1e22e37 LT |
216 | } |
217 | ||
ca8db142 LT |
218 | /* We allow "recursive" symbolic refs. Only within reason, though */ |
219 | #define MAXDEPTH 5 | |
220 | ||
8da19775 | 221 | const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *flag) |
8a65ff76 | 222 | { |
a876ed83 JH |
223 | int depth = MAXDEPTH, len; |
224 | char buffer[256]; | |
ed378ec7 | 225 | static char ref_buffer[256]; |
ca8db142 | 226 | |
8da19775 JH |
227 | if (flag) |
228 | *flag = 0; | |
229 | ||
a876ed83 | 230 | for (;;) { |
ed378ec7 | 231 | const char *path = git_path("%s", ref); |
a876ed83 JH |
232 | struct stat st; |
233 | char *buf; | |
234 | int fd; | |
8a65ff76 | 235 | |
a876ed83 JH |
236 | if (--depth < 0) |
237 | return NULL; | |
ca8db142 | 238 | |
a876ed83 JH |
239 | /* Special case: non-existing file. |
240 | * Not having the refs/heads/new-branch is OK | |
241 | * if we are writing into it, so is .git/HEAD | |
242 | * that points at refs/heads/master still to be | |
243 | * born. It is NOT OK if we are resolving for | |
244 | * reading. | |
245 | */ | |
246 | if (lstat(path, &st) < 0) { | |
434cd0cd LT |
247 | struct ref_list *list = get_packed_refs(); |
248 | while (list) { | |
f4204ab9 | 249 | if (!strcmp(ref, list->name)) { |
434cd0cd | 250 | hashcpy(sha1, list->sha1); |
8da19775 JH |
251 | if (flag) |
252 | *flag |= REF_ISPACKED; | |
434cd0cd LT |
253 | return ref; |
254 | } | |
255 | list = list->next; | |
256 | } | |
a876ed83 JH |
257 | if (reading || errno != ENOENT) |
258 | return NULL; | |
e702496e | 259 | hashclr(sha1); |
ed378ec7 | 260 | return ref; |
a876ed83 | 261 | } |
ca8db142 | 262 | |
a876ed83 JH |
263 | /* Follow "normalized" - ie "refs/.." symlinks by hand */ |
264 | if (S_ISLNK(st.st_mode)) { | |
265 | len = readlink(path, buffer, sizeof(buffer)-1); | |
266 | if (len >= 5 && !memcmp("refs/", buffer, 5)) { | |
ed378ec7 LT |
267 | buffer[len] = 0; |
268 | strcpy(ref_buffer, buffer); | |
269 | ref = ref_buffer; | |
8da19775 JH |
270 | if (flag) |
271 | *flag |= REF_ISSYMREF; | |
a876ed83 JH |
272 | continue; |
273 | } | |
ca8db142 | 274 | } |
a876ed83 | 275 | |
7a21632f DS |
276 | /* Is it a directory? */ |
277 | if (S_ISDIR(st.st_mode)) { | |
278 | errno = EISDIR; | |
279 | return NULL; | |
280 | } | |
281 | ||
a876ed83 JH |
282 | /* |
283 | * Anything else, just open it and try to use it as | |
284 | * a ref | |
285 | */ | |
286 | fd = open(path, O_RDONLY); | |
287 | if (fd < 0) | |
288 | return NULL; | |
289 | len = read(fd, buffer, sizeof(buffer)-1); | |
290 | close(fd); | |
291 | ||
292 | /* | |
293 | * Is it a symbolic ref? | |
294 | */ | |
295 | if (len < 4 || memcmp("ref:", buffer, 4)) | |
296 | break; | |
297 | buf = buffer + 4; | |
298 | len -= 4; | |
299 | while (len && isspace(*buf)) | |
300 | buf++, len--; | |
301 | while (len && isspace(buf[len-1])) | |
ed378ec7 LT |
302 | len--; |
303 | buf[len] = 0; | |
304 | memcpy(ref_buffer, buf, len + 1); | |
305 | ref = ref_buffer; | |
8da19775 JH |
306 | if (flag) |
307 | *flag |= REF_ISSYMREF; | |
8a65ff76 | 308 | } |
a876ed83 JH |
309 | if (len < 40 || get_sha1_hex(buffer, sha1)) |
310 | return NULL; | |
ed378ec7 | 311 | return ref; |
a876ed83 JH |
312 | } |
313 | ||
ed378ec7 | 314 | int create_symref(const char *ref_target, const char *refs_heads_master) |
8098a178 | 315 | { |
8098a178 JH |
316 | const char *lockpath; |
317 | char ref[1000]; | |
318 | int fd, len, written; | |
ed378ec7 | 319 | const char *git_HEAD = git_path("%s", ref_target); |
8098a178 | 320 | |
9f0bb90d JH |
321 | #ifndef NO_SYMLINK_HEAD |
322 | if (prefer_symlink_refs) { | |
f8348be3 JS |
323 | unlink(git_HEAD); |
324 | if (!symlink(refs_heads_master, git_HEAD)) | |
325 | return 0; | |
326 | fprintf(stderr, "no symlink - falling back to symbolic ref\n"); | |
327 | } | |
303958dc JS |
328 | #endif |
329 | ||
8098a178 JH |
330 | len = snprintf(ref, sizeof(ref), "ref: %s\n", refs_heads_master); |
331 | if (sizeof(ref) <= len) { | |
332 | error("refname too long: %s", refs_heads_master); | |
333 | return -1; | |
334 | } | |
335 | lockpath = mkpath("%s.lock", git_HEAD); | |
336 | fd = open(lockpath, O_CREAT | O_EXCL | O_WRONLY, 0666); | |
337 | written = write(fd, ref, len); | |
338 | close(fd); | |
339 | if (written != len) { | |
340 | unlink(lockpath); | |
341 | error("Unable to write to %s", lockpath); | |
342 | return -2; | |
343 | } | |
344 | if (rename(lockpath, git_HEAD) < 0) { | |
345 | unlink(lockpath); | |
346 | error("Unable to create %s", git_HEAD); | |
347 | return -3; | |
348 | } | |
138086a7 JH |
349 | if (adjust_shared_perm(git_HEAD)) { |
350 | unlink(lockpath); | |
351 | error("Unable to fix permissions on %s", lockpath); | |
352 | return -4; | |
353 | } | |
8098a178 | 354 | return 0; |
8098a178 JH |
355 | } |
356 | ||
ed378ec7 | 357 | int read_ref(const char *ref, unsigned char *sha1) |
a876ed83 | 358 | { |
8da19775 | 359 | if (resolve_ref(ref, sha1, 1, NULL)) |
a876ed83 JH |
360 | return 0; |
361 | return -1; | |
8a65ff76 LT |
362 | } |
363 | ||
ef06b918 JH |
364 | static int do_one_ref(const char *base, each_ref_fn fn, int trim, |
365 | void *cb_data, struct ref_list *entry) | |
366 | { | |
367 | if (strncmp(base, entry->name, trim)) | |
368 | return 0; | |
369 | if (is_null_sha1(entry->sha1)) | |
370 | return 0; | |
371 | if (!has_sha1_file(entry->sha1)) { | |
372 | error("%s does not point to a valid object!", entry->name); | |
373 | return 0; | |
374 | } | |
375 | return fn(entry->name + trim, entry->sha1, entry->flag, cb_data); | |
376 | } | |
377 | ||
cf0adba7 JH |
378 | int peel_ref(const char *ref, unsigned char *sha1) |
379 | { | |
380 | int flag; | |
381 | unsigned char base[20]; | |
382 | struct object *o; | |
383 | ||
384 | if (!resolve_ref(ref, base, 1, &flag)) | |
385 | return -1; | |
386 | ||
387 | if ((flag & REF_ISPACKED)) { | |
388 | struct ref_list *list = get_packed_refs(); | |
cf0adba7 JH |
389 | |
390 | while (list) { | |
f4204ab9 JH |
391 | if (!strcmp(list->name, ref)) { |
392 | if (list->flag & REF_KNOWS_PEELED) { | |
393 | hashcpy(sha1, list->peeled); | |
394 | return 0; | |
395 | } | |
396 | /* older pack-refs did not leave peeled ones */ | |
397 | break; | |
cf0adba7 JH |
398 | } |
399 | list = list->next; | |
400 | } | |
cf0adba7 JH |
401 | } |
402 | ||
f4204ab9 | 403 | /* fallback - callers should not call this for unpacked refs */ |
cf0adba7 JH |
404 | o = parse_object(base); |
405 | if (o->type == OBJ_TAG) { | |
406 | o = deref_tag(o, ref, 0); | |
407 | if (o) { | |
408 | hashcpy(sha1, o->sha1); | |
409 | return 0; | |
410 | } | |
411 | } | |
412 | return -1; | |
413 | } | |
414 | ||
8da19775 JH |
415 | static int do_for_each_ref(const char *base, each_ref_fn fn, int trim, |
416 | void *cb_data) | |
8a65ff76 | 417 | { |
e1e22e37 LT |
418 | int retval; |
419 | struct ref_list *packed = get_packed_refs(); | |
420 | struct ref_list *loose = get_loose_refs(); | |
8a65ff76 | 421 | |
e1e22e37 LT |
422 | while (packed && loose) { |
423 | struct ref_list *entry; | |
424 | int cmp = strcmp(packed->name, loose->name); | |
425 | if (!cmp) { | |
426 | packed = packed->next; | |
427 | continue; | |
6cada6a9 | 428 | } |
e1e22e37 LT |
429 | if (cmp > 0) { |
430 | entry = loose; | |
431 | loose = loose->next; | |
432 | } else { | |
433 | entry = packed; | |
434 | packed = packed->next; | |
435 | } | |
ef06b918 | 436 | retval = do_one_ref(base, fn, trim, cb_data, entry); |
e1e22e37 LT |
437 | if (retval) |
438 | return retval; | |
439 | } | |
8a65ff76 | 440 | |
ef06b918 JH |
441 | for (packed = packed ? packed : loose; packed; packed = packed->next) { |
442 | retval = do_one_ref(base, fn, trim, cb_data, packed); | |
443 | if (retval) | |
444 | return retval; | |
8a65ff76 | 445 | } |
e1e22e37 | 446 | return 0; |
8a65ff76 LT |
447 | } |
448 | ||
cb5d709f | 449 | int head_ref(each_ref_fn fn, void *cb_data) |
723c31fe LT |
450 | { |
451 | unsigned char sha1[20]; | |
8da19775 JH |
452 | int flag; |
453 | ||
454 | if (resolve_ref("HEAD", sha1, 1, &flag)) | |
455 | return fn("HEAD", sha1, flag, cb_data); | |
2f34ba32 | 456 | return 0; |
723c31fe LT |
457 | } |
458 | ||
cb5d709f | 459 | int for_each_ref(each_ref_fn fn, void *cb_data) |
8a65ff76 | 460 | { |
cb5d709f | 461 | return do_for_each_ref("refs/", fn, 0, cb_data); |
a62be77f SE |
462 | } |
463 | ||
cb5d709f | 464 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
a62be77f | 465 | { |
cb5d709f | 466 | return do_for_each_ref("refs/tags/", fn, 10, cb_data); |
a62be77f SE |
467 | } |
468 | ||
cb5d709f | 469 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
a62be77f | 470 | { |
cb5d709f | 471 | return do_for_each_ref("refs/heads/", fn, 11, cb_data); |
a62be77f SE |
472 | } |
473 | ||
cb5d709f | 474 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
a62be77f | 475 | { |
cb5d709f | 476 | return do_for_each_ref("refs/remotes/", fn, 13, cb_data); |
8a65ff76 LT |
477 | } |
478 | ||
cb5d709f JH |
479 | /* NEEDSWORK: This is only used by ssh-upload and it should go; the |
480 | * caller should do resolve_ref or read_ref like everybody else. Or | |
481 | * maybe everybody else should use get_ref_sha1() instead of doing | |
482 | * read_ref(). | |
483 | */ | |
95fc7512 DB |
484 | int get_ref_sha1(const char *ref, unsigned char *sha1) |
485 | { | |
95fc7512 DB |
486 | if (check_ref_format(ref)) |
487 | return -1; | |
ed378ec7 | 488 | return read_ref(mkpath("refs/%s", ref), sha1); |
95fc7512 DB |
489 | } |
490 | ||
03feddd6 JH |
491 | /* |
492 | * Make sure "ref" is something reasonable to have under ".git/refs/"; | |
493 | * We do not like it if: | |
494 | * | |
495 | * - any path component of it begins with ".", or | |
496 | * - it has double dots "..", or | |
497 | * - it has ASCII control character, "~", "^", ":" or SP, anywhere, or | |
498 | * - it ends with a "/". | |
499 | */ | |
500 | ||
501 | static inline int bad_ref_char(int ch) | |
502 | { | |
503 | return (((unsigned) ch) <= ' ' || | |
68283999 JH |
504 | ch == '~' || ch == '^' || ch == ':' || |
505 | /* 2.13 Pattern Matching Notation */ | |
506 | ch == '?' || ch == '*' || ch == '['); | |
03feddd6 JH |
507 | } |
508 | ||
95fc7512 DB |
509 | int check_ref_format(const char *ref) |
510 | { | |
03feddd6 JH |
511 | int ch, level; |
512 | const char *cp = ref; | |
513 | ||
514 | level = 0; | |
515 | while (1) { | |
516 | while ((ch = *cp++) == '/') | |
517 | ; /* tolerate duplicated slashes */ | |
518 | if (!ch) | |
519 | return -1; /* should not end with slashes */ | |
520 | ||
521 | /* we are at the beginning of the path component */ | |
522 | if (ch == '.' || bad_ref_char(ch)) | |
523 | return -1; | |
524 | ||
525 | /* scan the rest of the path component */ | |
526 | while ((ch = *cp++) != 0) { | |
527 | if (bad_ref_char(ch)) | |
528 | return -1; | |
529 | if (ch == '/') | |
530 | break; | |
531 | if (ch == '.' && *cp == '.') | |
532 | return -1; | |
533 | } | |
534 | level++; | |
535 | if (!ch) { | |
536 | if (level < 2) | |
37adac76 | 537 | return -2; /* at least of form "heads/blah" */ |
03feddd6 JH |
538 | return 0; |
539 | } | |
540 | } | |
95fc7512 DB |
541 | } |
542 | ||
e5f38ec3 | 543 | static struct ref_lock *verify_lock(struct ref_lock *lock, |
4bd18c43 SP |
544 | const unsigned char *old_sha1, int mustexist) |
545 | { | |
8da19775 | 546 | if (!resolve_ref(lock->ref_name, lock->old_sha1, mustexist, NULL)) { |
434cd0cd | 547 | error("Can't verify ref %s", lock->ref_name); |
4bd18c43 SP |
548 | unlock_ref(lock); |
549 | return NULL; | |
550 | } | |
a89fccd2 | 551 | if (hashcmp(lock->old_sha1, old_sha1)) { |
434cd0cd | 552 | error("Ref %s is at %s but expected %s", lock->ref_name, |
4bd18c43 SP |
553 | sha1_to_hex(lock->old_sha1), sha1_to_hex(old_sha1)); |
554 | unlock_ref(lock); | |
555 | return NULL; | |
556 | } | |
557 | return lock; | |
558 | } | |
559 | ||
bc7127ef JH |
560 | static int remove_empty_dir_recursive(char *path, int len) |
561 | { | |
562 | DIR *dir = opendir(path); | |
563 | struct dirent *e; | |
564 | int ret = 0; | |
565 | ||
566 | if (!dir) | |
567 | return -1; | |
568 | if (path[len-1] != '/') | |
569 | path[len++] = '/'; | |
570 | while ((e = readdir(dir)) != NULL) { | |
571 | struct stat st; | |
572 | int namlen; | |
573 | if ((e->d_name[0] == '.') && | |
574 | ((e->d_name[1] == 0) || | |
575 | ((e->d_name[1] == '.') && e->d_name[2] == 0))) | |
576 | continue; /* "." and ".." */ | |
577 | ||
578 | namlen = strlen(e->d_name); | |
579 | if ((len + namlen < PATH_MAX) && | |
580 | strcpy(path + len, e->d_name) && | |
581 | !lstat(path, &st) && | |
582 | S_ISDIR(st.st_mode) && | |
28bed6ea | 583 | !remove_empty_dir_recursive(path, len + namlen)) |
bc7127ef JH |
584 | continue; /* happy */ |
585 | ||
586 | /* path too long, stat fails, or non-directory still exists */ | |
587 | ret = -1; | |
588 | break; | |
589 | } | |
590 | closedir(dir); | |
591 | if (!ret) { | |
592 | path[len] = 0; | |
593 | ret = rmdir(path); | |
594 | } | |
595 | return ret; | |
596 | } | |
597 | ||
598 | static int remove_empty_directories(char *file) | |
599 | { | |
600 | /* we want to create a file but there is a directory there; | |
601 | * if that is an empty directory (or a directory that contains | |
602 | * only empty directories), remove them. | |
603 | */ | |
604 | char path[PATH_MAX]; | |
605 | int len = strlen(file); | |
606 | ||
607 | if (len >= PATH_MAX) /* path too long ;-) */ | |
608 | return -1; | |
609 | strcpy(path, file); | |
610 | return remove_empty_dir_recursive(path, len); | |
611 | } | |
612 | ||
c976d415 LH |
613 | static int is_refname_available(const char *ref, const char *oldref, |
614 | struct ref_list *list, int quiet) | |
615 | { | |
616 | int namlen = strlen(ref); /* e.g. 'foo/bar' */ | |
617 | while (list) { | |
618 | /* list->name could be 'foo' or 'foo/bar/baz' */ | |
619 | if (!oldref || strcmp(oldref, list->name)) { | |
620 | int len = strlen(list->name); | |
621 | int cmplen = (namlen < len) ? namlen : len; | |
622 | const char *lead = (namlen < len) ? list->name : ref; | |
623 | if (!strncmp(ref, list->name, cmplen) && | |
624 | lead[cmplen] == '/') { | |
625 | if (!quiet) | |
626 | error("'%s' exists; cannot create '%s'", | |
627 | list->name, ref); | |
628 | return 0; | |
629 | } | |
630 | } | |
631 | list = list->next; | |
632 | } | |
633 | return 1; | |
634 | } | |
635 | ||
c0277d15 | 636 | static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int *flag) |
4bd18c43 | 637 | { |
434cd0cd | 638 | char *ref_file; |
ed378ec7 | 639 | const char *orig_ref = ref; |
4bd18c43 | 640 | struct ref_lock *lock; |
732232a1 | 641 | struct stat st; |
5cc3cef9 | 642 | int last_errno = 0; |
4431fcc4 | 643 | int mustexist = (old_sha1 && !is_null_sha1(old_sha1)); |
4bd18c43 SP |
644 | |
645 | lock = xcalloc(1, sizeof(struct ref_lock)); | |
646 | lock->lock_fd = -1; | |
647 | ||
c0277d15 | 648 | ref = resolve_ref(ref, lock->old_sha1, mustexist, flag); |
bc7127ef JH |
649 | if (!ref && errno == EISDIR) { |
650 | /* we are trying to lock foo but we used to | |
651 | * have foo/bar which now does not exist; | |
652 | * it is normal for the empty directory 'foo' | |
653 | * to remain. | |
654 | */ | |
655 | ref_file = git_path("%s", orig_ref); | |
5cc3cef9 JH |
656 | if (remove_empty_directories(ref_file)) { |
657 | last_errno = errno; | |
658 | error("there are still refs under '%s'", orig_ref); | |
659 | goto error_return; | |
660 | } | |
c0277d15 | 661 | ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, flag); |
bc7127ef | 662 | } |
ed378ec7 | 663 | if (!ref) { |
5cc3cef9 | 664 | last_errno = errno; |
818f477c | 665 | error("unable to resolve reference %s: %s", |
ed378ec7 | 666 | orig_ref, strerror(errno)); |
5cc3cef9 | 667 | goto error_return; |
4bd18c43 | 668 | } |
c976d415 LH |
669 | /* When the ref did not exist and we are creating it, |
670 | * make sure there is no existing ref that is packed | |
671 | * whose name begins with our refname, nor a ref whose | |
672 | * name is a proper prefix of our refname. | |
673 | */ | |
674 | if (is_null_sha1(lock->old_sha1) && | |
675 | !is_refname_available(ref, NULL, get_packed_refs(), 0)) | |
676 | goto error_return; | |
22a3844e | 677 | |
c33d5174 | 678 | lock->lk = xcalloc(1, sizeof(struct lock_file)); |
4bd18c43 | 679 | |
434cd0cd | 680 | lock->ref_name = xstrdup(ref); |
ed378ec7 | 681 | lock->log_file = xstrdup(git_path("logs/%s", ref)); |
7c1a278d | 682 | ref_file = git_path("%s", ref); |
434cd0cd | 683 | lock->force_write = lstat(ref_file, &st) && errno == ENOENT; |
4bd18c43 | 684 | |
5cc3cef9 JH |
685 | if (safe_create_leading_directories(ref_file)) { |
686 | last_errno = errno; | |
687 | error("unable to create directory for %s", ref_file); | |
688 | goto error_return; | |
689 | } | |
434cd0cd | 690 | lock->lock_fd = hold_lock_file_for_update(lock->lk, ref_file, 1); |
4bd18c43 SP |
691 | |
692 | return old_sha1 ? verify_lock(lock, old_sha1, mustexist) : lock; | |
5cc3cef9 JH |
693 | |
694 | error_return: | |
695 | unlock_ref(lock); | |
696 | errno = last_errno; | |
697 | return NULL; | |
4bd18c43 SP |
698 | } |
699 | ||
4431fcc4 | 700 | struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1) |
95fc7512 | 701 | { |
53cce84c | 702 | char refpath[PATH_MAX]; |
95fc7512 | 703 | if (check_ref_format(ref)) |
4bd18c43 | 704 | return NULL; |
53cce84c | 705 | strcpy(refpath, mkpath("refs/%s", ref)); |
c0277d15 | 706 | return lock_ref_sha1_basic(refpath, old_sha1, NULL); |
4bd18c43 SP |
707 | } |
708 | ||
4431fcc4 | 709 | struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1) |
4bd18c43 | 710 | { |
c0277d15 JH |
711 | return lock_ref_sha1_basic(ref, old_sha1, NULL); |
712 | } | |
713 | ||
26a063a1 JH |
714 | static struct lock_file packlock; |
715 | ||
c0277d15 JH |
716 | static int repack_without_ref(const char *refname) |
717 | { | |
718 | struct ref_list *list, *packed_ref_list; | |
719 | int fd; | |
720 | int found = 0; | |
c0277d15 JH |
721 | |
722 | packed_ref_list = get_packed_refs(); | |
723 | for (list = packed_ref_list; list; list = list->next) { | |
724 | if (!strcmp(refname, list->name)) { | |
725 | found = 1; | |
726 | break; | |
727 | } | |
728 | } | |
729 | if (!found) | |
730 | return 0; | |
731 | memset(&packlock, 0, sizeof(packlock)); | |
732 | fd = hold_lock_file_for_update(&packlock, git_path("packed-refs"), 0); | |
733 | if (fd < 0) | |
734 | return error("cannot delete '%s' from packed refs", refname); | |
735 | ||
736 | for (list = packed_ref_list; list; list = list->next) { | |
737 | char line[PATH_MAX + 100]; | |
738 | int len; | |
739 | ||
740 | if (!strcmp(refname, list->name)) | |
741 | continue; | |
742 | len = snprintf(line, sizeof(line), "%s %s\n", | |
743 | sha1_to_hex(list->sha1), list->name); | |
744 | /* this should not happen but just being defensive */ | |
745 | if (len > sizeof(line)) | |
746 | die("too long a refname '%s'", list->name); | |
747 | write_or_die(fd, line, len); | |
748 | } | |
749 | return commit_lock_file(&packlock); | |
750 | } | |
751 | ||
752 | int delete_ref(const char *refname, unsigned char *sha1) | |
753 | { | |
754 | struct ref_lock *lock; | |
755 | int err, i, ret = 0, flag = 0; | |
756 | ||
757 | lock = lock_ref_sha1_basic(refname, sha1, &flag); | |
758 | if (!lock) | |
759 | return 1; | |
760 | if (!(flag & REF_ISPACKED)) { | |
761 | /* loose */ | |
762 | i = strlen(lock->lk->filename) - 5; /* .lock */ | |
763 | lock->lk->filename[i] = 0; | |
764 | err = unlink(lock->lk->filename); | |
765 | if (err) { | |
766 | ret = 1; | |
767 | error("unlink(%s) failed: %s", | |
768 | lock->lk->filename, strerror(errno)); | |
769 | } | |
770 | lock->lk->filename[i] = '.'; | |
771 | } | |
772 | /* removing the loose one could have resurrected an earlier | |
773 | * packed one. Also, if it was not loose we need to repack | |
774 | * without it. | |
775 | */ | |
776 | ret |= repack_without_ref(refname); | |
777 | ||
778 | err = unlink(lock->log_file); | |
779 | if (err && errno != ENOENT) | |
780 | fprintf(stderr, "warning: unlink(%s) failed: %s", | |
781 | lock->log_file, strerror(errno)); | |
782 | invalidate_cached_refs(); | |
783 | unlock_ref(lock); | |
784 | return ret; | |
4bd18c43 SP |
785 | } |
786 | ||
678d0f4c | 787 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) |
c976d415 LH |
788 | { |
789 | static const char renamed_ref[] = "RENAMED-REF"; | |
790 | unsigned char sha1[20], orig_sha1[20]; | |
791 | int flag = 0, logmoved = 0; | |
792 | struct ref_lock *lock; | |
c976d415 | 793 | struct stat loginfo; |
16c2bfbb | 794 | int log = !lstat(git_path("logs/%s", oldref), &loginfo); |
c976d415 LH |
795 | |
796 | if (S_ISLNK(loginfo.st_mode)) | |
797 | return error("reflog for %s is a symlink", oldref); | |
798 | ||
799 | if (!resolve_ref(oldref, orig_sha1, 1, &flag)) | |
800 | return error("refname %s not found", oldref); | |
801 | ||
802 | if (!is_refname_available(newref, oldref, get_packed_refs(), 0)) | |
803 | return 1; | |
804 | ||
805 | if (!is_refname_available(newref, oldref, get_loose_refs(), 0)) | |
806 | return 1; | |
807 | ||
c976d415 LH |
808 | lock = lock_ref_sha1_basic(renamed_ref, NULL, NULL); |
809 | if (!lock) | |
810 | return error("unable to lock %s", renamed_ref); | |
811 | lock->force_write = 1; | |
678d0f4c | 812 | if (write_ref_sha1(lock, orig_sha1, logmsg)) |
c976d415 LH |
813 | return error("unable to save current sha1 in %s", renamed_ref); |
814 | ||
815 | if (log && rename(git_path("logs/%s", oldref), git_path("tmp-renamed-log"))) | |
816 | return error("unable to move logfile logs/%s to tmp-renamed-log: %s", | |
817 | oldref, strerror(errno)); | |
818 | ||
819 | if (delete_ref(oldref, orig_sha1)) { | |
820 | error("unable to delete old %s", oldref); | |
821 | goto rollback; | |
822 | } | |
823 | ||
824 | if (resolve_ref(newref, sha1, 1, &flag) && delete_ref(newref, sha1)) { | |
825 | if (errno==EISDIR) { | |
826 | if (remove_empty_directories(git_path("%s", newref))) { | |
827 | error("Directory not empty: %s", newref); | |
828 | goto rollback; | |
829 | } | |
830 | } else { | |
831 | error("unable to delete existing %s", newref); | |
832 | goto rollback; | |
833 | } | |
834 | } | |
835 | ||
836 | if (log && safe_create_leading_directories(git_path("logs/%s", newref))) { | |
837 | error("unable to create directory for %s", newref); | |
838 | goto rollback; | |
839 | } | |
840 | ||
841 | retry: | |
842 | if (log && rename(git_path("tmp-renamed-log"), git_path("logs/%s", newref))) { | |
843 | if (errno==EISDIR) { | |
844 | if (remove_empty_directories(git_path("logs/%s", newref))) { | |
845 | error("Directory not empty: logs/%s", newref); | |
846 | goto rollback; | |
847 | } | |
848 | goto retry; | |
849 | } else { | |
850 | error("unable to move logfile tmp-renamed-log to logs/%s: %s", | |
851 | newref, strerror(errno)); | |
852 | goto rollback; | |
853 | } | |
854 | } | |
855 | logmoved = log; | |
856 | ||
857 | lock = lock_ref_sha1_basic(newref, NULL, NULL); | |
858 | if (!lock) { | |
859 | error("unable to lock %s for update", newref); | |
860 | goto rollback; | |
861 | } | |
862 | ||
863 | lock->force_write = 1; | |
864 | hashcpy(lock->old_sha1, orig_sha1); | |
678d0f4c | 865 | if (write_ref_sha1(lock, orig_sha1, logmsg)) { |
c976d415 LH |
866 | error("unable to write current sha1 into %s", newref); |
867 | goto rollback; | |
868 | } | |
869 | ||
dc81c58c JS |
870 | if (!strncmp(oldref, "refs/heads/", 11) && |
871 | !strncmp(newref, "refs/heads/", 11)) { | |
872 | char oldsection[1024], newsection[1024]; | |
873 | ||
874 | snprintf(oldsection, 1024, "branch.%s", oldref + 11); | |
875 | snprintf(newsection, 1024, "branch.%s", newref + 11); | |
876 | if (git_config_rename_section(oldsection, newsection) < 0) | |
877 | return 1; | |
878 | } | |
879 | ||
c976d415 LH |
880 | return 0; |
881 | ||
882 | rollback: | |
883 | lock = lock_ref_sha1_basic(oldref, NULL, NULL); | |
884 | if (!lock) { | |
885 | error("unable to lock %s for rollback", oldref); | |
886 | goto rollbacklog; | |
887 | } | |
888 | ||
889 | lock->force_write = 1; | |
890 | flag = log_all_ref_updates; | |
891 | log_all_ref_updates = 0; | |
892 | if (write_ref_sha1(lock, orig_sha1, NULL)) | |
893 | error("unable to write current sha1 into %s", oldref); | |
894 | log_all_ref_updates = flag; | |
895 | ||
896 | rollbacklog: | |
897 | if (logmoved && rename(git_path("logs/%s", newref), git_path("logs/%s", oldref))) | |
898 | error("unable to restore logfile %s from %s: %s", | |
899 | oldref, newref, strerror(errno)); | |
900 | if (!logmoved && log && | |
901 | rename(git_path("tmp-renamed-log"), git_path("logs/%s", oldref))) | |
902 | error("unable to restore logfile %s from tmp-renamed-log: %s", | |
903 | oldref, strerror(errno)); | |
904 | ||
905 | return 1; | |
906 | } | |
907 | ||
e5f38ec3 | 908 | void unlock_ref(struct ref_lock *lock) |
4bd18c43 SP |
909 | { |
910 | if (lock->lock_fd >= 0) { | |
911 | close(lock->lock_fd); | |
c33d5174 JH |
912 | /* Do not free lock->lk -- atexit() still looks at them */ |
913 | if (lock->lk) | |
914 | rollback_lock_file(lock->lk); | |
4bd18c43 | 915 | } |
434cd0cd | 916 | free(lock->ref_name); |
4cac42b1 | 917 | free(lock->log_file); |
4bd18c43 SP |
918 | free(lock); |
919 | } | |
920 | ||
6de08ae6 SP |
921 | static int log_ref_write(struct ref_lock *lock, |
922 | const unsigned char *sha1, const char *msg) | |
923 | { | |
924 | int logfd, written, oflags = O_APPEND | O_WRONLY; | |
925 | unsigned maxlen, len; | |
926 | char *logrec; | |
ff4c8485 | 927 | const char *committer; |
6de08ae6 | 928 | |
4057deb5 JH |
929 | if (log_all_ref_updates && |
930 | !strncmp(lock->ref_name, "refs/heads/", 11)) { | |
6de08ae6 SP |
931 | if (safe_create_leading_directories(lock->log_file) < 0) |
932 | return error("unable to create directory for %s", | |
933 | lock->log_file); | |
934 | oflags |= O_CREAT; | |
935 | } | |
936 | ||
937 | logfd = open(lock->log_file, oflags, 0666); | |
938 | if (logfd < 0) { | |
1974bf62 | 939 | if (!(oflags & O_CREAT) && errno == ENOENT) |
6de08ae6 | 940 | return 0; |
3b463c3f JH |
941 | |
942 | if ((oflags & O_CREAT) && errno == EISDIR) { | |
943 | if (remove_empty_directories(lock->log_file)) { | |
944 | return error("There are still logs under '%s'", | |
945 | lock->log_file); | |
946 | } | |
947 | logfd = open(lock->log_file, oflags, 0666); | |
948 | } | |
949 | ||
950 | if (logfd < 0) | |
951 | return error("Unable to append to %s: %s", | |
952 | lock->log_file, strerror(errno)); | |
6de08ae6 SP |
953 | } |
954 | ||
ff4c8485 | 955 | committer = git_committer_info(1); |
6de08ae6 | 956 | if (msg) { |
ff4c8485 | 957 | maxlen = strlen(committer) + strlen(msg) + 2*40 + 5; |
6de08ae6 SP |
958 | logrec = xmalloc(maxlen); |
959 | len = snprintf(logrec, maxlen, "%s %s %s\t%s\n", | |
960 | sha1_to_hex(lock->old_sha1), | |
961 | sha1_to_hex(sha1), | |
ff4c8485 | 962 | committer, |
6de08ae6 | 963 | msg); |
e5f38ec3 JH |
964 | } |
965 | else { | |
ff4c8485 | 966 | maxlen = strlen(committer) + 2*40 + 4; |
6de08ae6 SP |
967 | logrec = xmalloc(maxlen); |
968 | len = snprintf(logrec, maxlen, "%s %s %s\n", | |
969 | sha1_to_hex(lock->old_sha1), | |
970 | sha1_to_hex(sha1), | |
ff4c8485 | 971 | committer); |
6de08ae6 SP |
972 | } |
973 | written = len <= maxlen ? write(logfd, logrec, len) : -1; | |
974 | free(logrec); | |
975 | close(logfd); | |
976 | if (written != len) | |
977 | return error("Unable to append to %s", lock->log_file); | |
978 | return 0; | |
979 | } | |
980 | ||
4bd18c43 SP |
981 | int write_ref_sha1(struct ref_lock *lock, |
982 | const unsigned char *sha1, const char *logmsg) | |
983 | { | |
984 | static char term = '\n'; | |
985 | ||
986 | if (!lock) | |
95fc7512 | 987 | return -1; |
a89fccd2 | 988 | if (!lock->force_write && !hashcmp(lock->old_sha1, sha1)) { |
4bd18c43 SP |
989 | unlock_ref(lock); |
990 | return 0; | |
95fc7512 | 991 | } |
4bd18c43 SP |
992 | if (write(lock->lock_fd, sha1_to_hex(sha1), 40) != 40 || |
993 | write(lock->lock_fd, &term, 1) != 1 | |
994 | || close(lock->lock_fd) < 0) { | |
c33d5174 | 995 | error("Couldn't write %s", lock->lk->filename); |
4bd18c43 SP |
996 | unlock_ref(lock); |
997 | return -1; | |
998 | } | |
5e290ff7 | 999 | invalidate_cached_refs(); |
6de08ae6 SP |
1000 | if (log_ref_write(lock, sha1, logmsg) < 0) { |
1001 | unlock_ref(lock); | |
1002 | return -1; | |
1003 | } | |
c33d5174 | 1004 | if (commit_lock_file(lock->lk)) { |
434cd0cd | 1005 | error("Couldn't set %s", lock->ref_name); |
4bd18c43 SP |
1006 | unlock_ref(lock); |
1007 | return -1; | |
1008 | } | |
1009 | lock->lock_fd = -1; | |
1010 | unlock_ref(lock); | |
1011 | return 0; | |
95fc7512 | 1012 | } |
d556fae2 | 1013 | |
ab2a1a32 | 1014 | int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1) |
d556fae2 | 1015 | { |
e5229042 | 1016 | const char *logfile, *logdata, *logend, *rec, *lastgt, *lastrec; |
d556fae2 SP |
1017 | char *tz_c; |
1018 | int logfd, tz; | |
1019 | struct stat st; | |
1020 | unsigned long date; | |
e5229042 | 1021 | unsigned char logged_sha1[20]; |
d556fae2 SP |
1022 | |
1023 | logfile = git_path("logs/%s", ref); | |
1024 | logfd = open(logfile, O_RDONLY, 0); | |
1025 | if (logfd < 0) | |
1026 | die("Unable to read log %s: %s", logfile, strerror(errno)); | |
1027 | fstat(logfd, &st); | |
1028 | if (!st.st_size) | |
1029 | die("Log %s is empty.", logfile); | |
1030 | logdata = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, logfd, 0); | |
1031 | close(logfd); | |
1032 | ||
e5229042 | 1033 | lastrec = NULL; |
d556fae2 SP |
1034 | rec = logend = logdata + st.st_size; |
1035 | while (logdata < rec) { | |
1036 | if (logdata < rec && *(rec-1) == '\n') | |
1037 | rec--; | |
e5229042 SP |
1038 | lastgt = NULL; |
1039 | while (logdata < rec && *(rec-1) != '\n') { | |
d556fae2 | 1040 | rec--; |
e5229042 SP |
1041 | if (*rec == '>') |
1042 | lastgt = rec; | |
1043 | } | |
1044 | if (!lastgt) | |
d556fae2 | 1045 | die("Log %s is corrupt.", logfile); |
e5229042 | 1046 | date = strtoul(lastgt + 1, &tz_c, 10); |
ab2a1a32 | 1047 | if (date <= at_time || cnt == 0) { |
e5229042 SP |
1048 | if (lastrec) { |
1049 | if (get_sha1_hex(lastrec, logged_sha1)) | |
1050 | die("Log %s is corrupt.", logfile); | |
1051 | if (get_sha1_hex(rec + 41, sha1)) | |
1052 | die("Log %s is corrupt.", logfile); | |
a89fccd2 | 1053 | if (hashcmp(logged_sha1, sha1)) { |
e5229042 SP |
1054 | tz = strtoul(tz_c, NULL, 10); |
1055 | fprintf(stderr, | |
1056 | "warning: Log %s has gap after %s.\n", | |
1057 | logfile, show_rfc2822_date(date, tz)); | |
1058 | } | |
e5f38ec3 JH |
1059 | } |
1060 | else if (date == at_time) { | |
e5229042 SP |
1061 | if (get_sha1_hex(rec + 41, sha1)) |
1062 | die("Log %s is corrupt.", logfile); | |
e5f38ec3 JH |
1063 | } |
1064 | else { | |
e5229042 SP |
1065 | if (get_sha1_hex(rec + 41, logged_sha1)) |
1066 | die("Log %s is corrupt.", logfile); | |
a89fccd2 | 1067 | if (hashcmp(logged_sha1, sha1)) { |
e5229042 SP |
1068 | tz = strtoul(tz_c, NULL, 10); |
1069 | fprintf(stderr, | |
1070 | "warning: Log %s unexpectedly ended on %s.\n", | |
1071 | logfile, show_rfc2822_date(date, tz)); | |
1072 | } | |
1073 | } | |
d556fae2 SP |
1074 | munmap((void*)logdata, st.st_size); |
1075 | return 0; | |
1076 | } | |
e5229042 | 1077 | lastrec = rec; |
ab2a1a32 JH |
1078 | if (cnt > 0) |
1079 | cnt--; | |
d556fae2 SP |
1080 | } |
1081 | ||
e5229042 SP |
1082 | rec = logdata; |
1083 | while (rec < logend && *rec != '>' && *rec != '\n') | |
1084 | rec++; | |
1085 | if (rec == logend || *rec == '\n') | |
d556fae2 | 1086 | die("Log %s is corrupt.", logfile); |
e5229042 | 1087 | date = strtoul(rec + 1, &tz_c, 10); |
d556fae2 SP |
1088 | tz = strtoul(tz_c, NULL, 10); |
1089 | if (get_sha1_hex(logdata, sha1)) | |
1090 | die("Log %s is corrupt.", logfile); | |
1091 | munmap((void*)logdata, st.st_size); | |
1092 | fprintf(stderr, "warning: Log %s only goes back to %s.\n", | |
1093 | logfile, show_rfc2822_date(date, tz)); | |
1094 | return 0; | |
1095 | } |