]>
Commit | Line | Data |
---|---|---|
def88e9a | 1 | #include "cache.h" |
fb9040cc | 2 | #include "refs.h" |
def88e9a | 3 | #include "pkt-line.h" |
49bb805e JH |
4 | #include "commit.h" |
5 | #include "tag.h" | |
da093d37 NP |
6 | #include "exec_cmd.h" |
7 | #include "sideband.h" | |
def88e9a | 8 | |
ad897215 | 9 | static int keep_pack; |
8b3d9dc0 | 10 | static int quiet; |
33b83034 | 11 | static int verbose; |
dfeff66e | 12 | static int fetch_all; |
016e6ccb | 13 | static int depth; |
33b83034 | 14 | static const char fetch_pack_usage[] = |
016e6ccb | 15 | "git-fetch-pack [--all] [-q] [-v] [-k] [--thin] [--exec=upload-pack] [--depth=<n>] [host:]directory <refs>..."; |
def88e9a LT |
16 | static const char *exec = "git-upload-pack"; |
17 | ||
0a8944dd | 18 | #define COMPLETE (1U << 0) |
23d61f83 JS |
19 | #define COMMON (1U << 1) |
20 | #define COMMON_REF (1U << 2) | |
21 | #define SEEN (1U << 3) | |
22 | #define POPPED (1U << 4) | |
23 | ||
f061e5fd JH |
24 | /* |
25 | * After sending this many "have"s if we do not get any new ACK , we | |
26 | * give up traversing our history. | |
27 | */ | |
28 | #define MAX_IN_VAIN 256 | |
29 | ||
96f1e58f DR |
30 | static struct commit_list *rev_list; |
31 | static int non_common_revs, multi_ack, use_thin_pack, use_sideband; | |
23d61f83 JS |
32 | |
33 | static void rev_list_push(struct commit *commit, int mark) | |
34 | { | |
35 | if (!(commit->object.flags & mark)) { | |
36 | commit->object.flags |= mark; | |
37 | ||
38 | if (!(commit->object.parsed)) | |
39 | parse_commit(commit); | |
40 | ||
41 | insert_by_date(commit, &rev_list); | |
42 | ||
43 | if (!(commit->object.flags & COMMON)) | |
44 | non_common_revs++; | |
45 | } | |
46 | } | |
47 | ||
8da19775 | 48 | static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
23d61f83 | 49 | { |
9534f40b | 50 | struct object *o = deref_tag(parse_object(sha1), path, 0); |
23d61f83 | 51 | |
1974632c | 52 | if (o && o->type == OBJ_COMMIT) |
23d61f83 JS |
53 | rev_list_push((struct commit *)o, SEEN); |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | /* | |
59 | This function marks a rev and its ancestors as common. | |
60 | In some cases, it is desirable to mark only the ancestors (for example | |
61 | when only the server does not yet know that they are common). | |
62 | */ | |
63 | ||
64 | static void mark_common(struct commit *commit, | |
65 | int ancestors_only, int dont_parse) | |
66 | { | |
67 | if (commit != NULL && !(commit->object.flags & COMMON)) { | |
68 | struct object *o = (struct object *)commit; | |
69 | ||
70 | if (!ancestors_only) | |
71 | o->flags |= COMMON; | |
72 | ||
73 | if (!(o->flags & SEEN)) | |
74 | rev_list_push(commit, SEEN); | |
75 | else { | |
76 | struct commit_list *parents; | |
77 | ||
78 | if (!ancestors_only && !(o->flags & POPPED)) | |
79 | non_common_revs--; | |
80 | if (!o->parsed && !dont_parse) | |
81 | parse_commit(commit); | |
82 | ||
83 | for (parents = commit->parents; | |
84 | parents; | |
85 | parents = parents->next) | |
86 | mark_common(parents->item, 0, dont_parse); | |
87 | } | |
88 | } | |
89 | } | |
90 | ||
91 | /* | |
92 | Get the next rev to send, ignoring the common. | |
93 | */ | |
94 | ||
962554c6 | 95 | static const unsigned char* get_rev(void) |
23d61f83 JS |
96 | { |
97 | struct commit *commit = NULL; | |
98 | ||
99 | while (commit == NULL) { | |
100 | unsigned int mark; | |
101 | struct commit_list* parents; | |
102 | ||
103 | if (rev_list == NULL || non_common_revs == 0) | |
104 | return NULL; | |
105 | ||
106 | commit = rev_list->item; | |
107 | if (!(commit->object.parsed)) | |
108 | parse_commit(commit); | |
109 | commit->object.flags |= POPPED; | |
110 | if (!(commit->object.flags & COMMON)) | |
111 | non_common_revs--; | |
112 | ||
113 | parents = commit->parents; | |
114 | ||
115 | if (commit->object.flags & COMMON) { | |
116 | /* do not send "have", and ignore ancestors */ | |
117 | commit = NULL; | |
118 | mark = COMMON | SEEN; | |
119 | } else if (commit->object.flags & COMMON_REF) | |
120 | /* send "have", and ignore ancestors */ | |
121 | mark = COMMON | SEEN; | |
122 | else | |
123 | /* send "have", also for its ancestors */ | |
124 | mark = SEEN; | |
125 | ||
126 | while (parents) { | |
127 | if (!(parents->item->object.flags & SEEN)) | |
128 | rev_list_push(parents->item, mark); | |
129 | if (mark & COMMON) | |
130 | mark_common(parents->item, 1, 0); | |
131 | parents = parents->next; | |
132 | } | |
133 | ||
134 | rev_list = rev_list->next; | |
135 | } | |
136 | ||
137 | return commit->object.sha1; | |
138 | } | |
0a8944dd | 139 | |
33b83034 JH |
140 | static int find_common(int fd[2], unsigned char *result_sha1, |
141 | struct ref *refs) | |
def88e9a | 142 | { |
2759cbc7 | 143 | int fetching; |
23d61f83 JS |
144 | int count = 0, flushes = 0, retval; |
145 | const unsigned char *sha1; | |
f061e5fd JH |
146 | unsigned in_vain = 0; |
147 | int got_continue = 0; | |
23d61f83 | 148 | |
cb5d709f | 149 | for_each_ref(rev_list_insert_ref, NULL); |
def88e9a | 150 | |
2759cbc7 LT |
151 | fetching = 0; |
152 | for ( ; refs ; refs = refs->next) { | |
33b83034 | 153 | unsigned char *remote = refs->old_sha1; |
4dab94d5 | 154 | struct object *o; |
2759cbc7 | 155 | |
0a8944dd | 156 | /* |
4dab94d5 JH |
157 | * If that object is complete (i.e. it is an ancestor of a |
158 | * local ref), we tell them we have it but do not have to | |
159 | * tell them about its ancestors, which they already know | |
160 | * about. | |
f1f0a2be JH |
161 | * |
162 | * We use lookup_object here because we are only | |
163 | * interested in the case we *know* the object is | |
164 | * reachable and we have already scanned it. | |
4dab94d5 | 165 | */ |
f1f0a2be | 166 | if (((o = lookup_object(remote)) != NULL) && |
1baaae5e | 167 | (o->flags & COMPLETE)) { |
2759cbc7 | 168 | continue; |
0a8944dd | 169 | } |
23d61f83 | 170 | |
583b7ea3 | 171 | if (!fetching) |
e4fe4b8e | 172 | packet_write(fd[1], "want %s%s%s%s%s%s\n", |
583b7ea3 JH |
173 | sha1_to_hex(remote), |
174 | (multi_ack ? " multi_ack" : ""), | |
d47f3db7 JH |
175 | (use_sideband == 2 ? " side-band-64k" : ""), |
176 | (use_sideband == 1 ? " side-band" : ""), | |
e4fe4b8e NP |
177 | (use_thin_pack ? " thin-pack" : ""), |
178 | " ofs-delta"); | |
583b7ea3 JH |
179 | else |
180 | packet_write(fd[1], "want %s\n", sha1_to_hex(remote)); | |
2759cbc7 | 181 | fetching++; |
33b83034 | 182 | } |
ed09aef0 JS |
183 | if (is_repository_shallow()) |
184 | write_shallow_commits(fd[1], 1); | |
016e6ccb JS |
185 | if (depth > 0) |
186 | packet_write(fd[1], "deepen %d", depth); | |
fb9040cc | 187 | packet_flush(fd[1]); |
2759cbc7 LT |
188 | if (!fetching) |
189 | return 1; | |
0a8944dd | 190 | |
cf01bd52 | 191 | if (depth > 0) { |
016e6ccb JS |
192 | char line[1024]; |
193 | unsigned char sha1[20]; | |
194 | int len; | |
195 | ||
196 | while ((len = packet_read_line(fd[0], line, sizeof(line)))) { | |
197 | if (!strncmp("shallow ", line, 8)) { | |
198 | if (get_sha1_hex(line + 8, sha1)) | |
199 | die("invalid shallow line: %s", line); | |
016e6ccb | 200 | register_shallow(sha1); |
cf01bd52 JH |
201 | continue; |
202 | } | |
203 | if (!strncmp("unshallow ", line, 10)) { | |
f53514bc JS |
204 | if (get_sha1_hex(line + 10, sha1)) |
205 | die("invalid unshallow line: %s", line); | |
206 | if (!lookup_object(sha1)) | |
207 | die("object not found: %s", line); | |
208 | /* make sure that it is parsed as shallow */ | |
209 | parse_object(sha1); | |
210 | if (unregister_shallow(sha1)) | |
211 | die("no shallow found: %s", line); | |
cf01bd52 JH |
212 | continue; |
213 | } | |
214 | die("expected shallow/unshallow, got %s", line); | |
016e6ccb JS |
215 | } |
216 | } | |
217 | ||
23d61f83 | 218 | flushes = 0; |
75bfc6c2 | 219 | retval = -1; |
23d61f83 | 220 | while ((sha1 = get_rev())) { |
def88e9a | 221 | packet_write(fd[1], "have %s\n", sha1_to_hex(sha1)); |
33b83034 JH |
222 | if (verbose) |
223 | fprintf(stderr, "have %s\n", sha1_to_hex(sha1)); | |
f061e5fd | 224 | in_vain++; |
def88e9a | 225 | if (!(31 & ++count)) { |
c4c86f07 JS |
226 | int ack; |
227 | ||
def88e9a LT |
228 | packet_flush(fd[1]); |
229 | flushes++; | |
230 | ||
231 | /* | |
232 | * We keep one window "ahead" of the other side, and | |
233 | * will wait for an ACK only on the next one | |
234 | */ | |
235 | if (count == 32) | |
236 | continue; | |
c4c86f07 JS |
237 | |
238 | do { | |
239 | ack = get_ack(fd[0], result_sha1); | |
240 | if (verbose && ack) | |
241 | fprintf(stderr, "got ack %d %s\n", ack, | |
242 | sha1_to_hex(result_sha1)); | |
243 | if (ack == 1) { | |
244 | flushes = 0; | |
245 | multi_ack = 0; | |
246 | retval = 0; | |
247 | goto done; | |
248 | } else if (ack == 2) { | |
249 | struct commit *commit = | |
250 | lookup_commit(result_sha1); | |
251 | mark_common(commit, 0, 1); | |
252 | retval = 0; | |
f061e5fd JH |
253 | in_vain = 0; |
254 | got_continue = 1; | |
c4c86f07 JS |
255 | } |
256 | } while (ack); | |
def88e9a | 257 | flushes--; |
f061e5fd JH |
258 | if (got_continue && MAX_IN_VAIN < in_vain) { |
259 | if (verbose) | |
260 | fprintf(stderr, "giving up\n"); | |
261 | break; /* give up */ | |
262 | } | |
def88e9a LT |
263 | } |
264 | } | |
c4c86f07 | 265 | done: |
75bfc6c2 | 266 | packet_write(fd[1], "done\n"); |
33b83034 JH |
267 | if (verbose) |
268 | fprintf(stderr, "done\n"); | |
c4c86f07 JS |
269 | if (retval != 0) { |
270 | multi_ack = 0; | |
23d61f83 | 271 | flushes++; |
c4c86f07 JS |
272 | } |
273 | while (flushes || multi_ack) { | |
274 | int ack = get_ack(fd[0], result_sha1); | |
275 | if (ack) { | |
33b83034 | 276 | if (verbose) |
c4c86f07 JS |
277 | fprintf(stderr, "got ack (%d) %s\n", ack, |
278 | sha1_to_hex(result_sha1)); | |
279 | if (ack == 1) | |
280 | return 0; | |
281 | multi_ack = 1; | |
282 | continue; | |
33b83034 | 283 | } |
c4c86f07 | 284 | flushes--; |
def88e9a | 285 | } |
75bfc6c2 | 286 | return retval; |
def88e9a LT |
287 | } |
288 | ||
96f1e58f | 289 | static struct commit_list *complete; |
49bb805e | 290 | |
8da19775 | 291 | static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
49bb805e JH |
292 | { |
293 | struct object *o = parse_object(sha1); | |
294 | ||
1974632c | 295 | while (o && o->type == OBJ_TAG) { |
f1f0a2be JH |
296 | struct tag *t = (struct tag *) o; |
297 | if (!t->tagged) | |
298 | break; /* broken repository */ | |
49bb805e | 299 | o->flags |= COMPLETE; |
f1f0a2be | 300 | o = parse_object(t->tagged->sha1); |
49bb805e | 301 | } |
1974632c | 302 | if (o && o->type == OBJ_COMMIT) { |
49bb805e JH |
303 | struct commit *commit = (struct commit *)o; |
304 | commit->object.flags |= COMPLETE; | |
305 | insert_by_date(commit, &complete); | |
306 | } | |
307 | return 0; | |
308 | } | |
309 | ||
310 | static void mark_recent_complete_commits(unsigned long cutoff) | |
311 | { | |
312 | while (complete && cutoff <= complete->item->date) { | |
313 | if (verbose) | |
314 | fprintf(stderr, "Marking %s as complete\n", | |
315 | sha1_to_hex(complete->item->object.sha1)); | |
316 | pop_most_recent_commit(&complete, COMPLETE); | |
317 | } | |
318 | } | |
319 | ||
1baaae5e JS |
320 | static void filter_refs(struct ref **refs, int nr_match, char **match) |
321 | { | |
9546010b JH |
322 | struct ref **return_refs; |
323 | struct ref *newlist = NULL; | |
324 | struct ref **newtail = &newlist; | |
325 | struct ref *ref, *next; | |
326 | struct ref *fastarray[32]; | |
327 | ||
328 | if (nr_match && !fetch_all) { | |
329 | if (ARRAY_SIZE(fastarray) < nr_match) | |
330 | return_refs = xcalloc(nr_match, sizeof(struct ref *)); | |
331 | else { | |
332 | return_refs = fastarray; | |
333 | memset(return_refs, 0, sizeof(struct ref *) * nr_match); | |
334 | } | |
335 | } | |
336 | else | |
337 | return_refs = NULL; | |
338 | ||
339 | for (ref = *refs; ref; ref = next) { | |
340 | next = ref->next; | |
341 | if (!memcmp(ref->name, "refs/", 5) && | |
342 | check_ref_format(ref->name + 5)) | |
343 | ; /* trash */ | |
4bcb310c AJ |
344 | else if (fetch_all && |
345 | (!depth || strncmp(ref->name, "refs/tags/", 10) )) { | |
9546010b JH |
346 | *newtail = ref; |
347 | ref->next = NULL; | |
348 | newtail = &ref->next; | |
349 | continue; | |
350 | } | |
351 | else { | |
352 | int order = path_match(ref->name, nr_match, match); | |
353 | if (order) { | |
354 | return_refs[order-1] = ref; | |
355 | continue; /* we will link it later */ | |
356 | } | |
357 | } | |
358 | free(ref); | |
359 | } | |
360 | ||
361 | if (!fetch_all) { | |
362 | int i; | |
363 | for (i = 0; i < nr_match; i++) { | |
364 | ref = return_refs[i]; | |
365 | if (ref) { | |
366 | *newtail = ref; | |
367 | ref->next = NULL; | |
368 | newtail = &ref->next; | |
369 | } | |
370 | } | |
371 | if (return_refs != fastarray) | |
372 | free(return_refs); | |
1baaae5e | 373 | } |
9546010b | 374 | *refs = newlist; |
1baaae5e JS |
375 | } |
376 | ||
377 | static int everything_local(struct ref **refs, int nr_match, char **match) | |
2759cbc7 | 378 | { |
49bb805e | 379 | struct ref *ref; |
2759cbc7 | 380 | int retval; |
49bb805e JH |
381 | unsigned long cutoff = 0; |
382 | ||
383 | track_object_refs = 0; | |
384 | save_commit_buffer = 0; | |
385 | ||
1baaae5e | 386 | for (ref = *refs; ref; ref = ref->next) { |
49bb805e JH |
387 | struct object *o; |
388 | ||
389 | o = parse_object(ref->old_sha1); | |
390 | if (!o) | |
391 | continue; | |
392 | ||
393 | /* We already have it -- which may mean that we were | |
394 | * in sync with the other side at some time after | |
395 | * that (it is OK if we guess wrong here). | |
396 | */ | |
1974632c | 397 | if (o->type == OBJ_COMMIT) { |
49bb805e JH |
398 | struct commit *commit = (struct commit *)o; |
399 | if (!cutoff || cutoff < commit->date) | |
400 | cutoff = commit->date; | |
401 | } | |
402 | } | |
403 | ||
f53514bc JS |
404 | if (!depth) { |
405 | for_each_ref(mark_complete, NULL); | |
406 | if (cutoff) | |
407 | mark_recent_complete_commits(cutoff); | |
408 | } | |
2759cbc7 | 409 | |
1baaae5e JS |
410 | /* |
411 | * Mark all complete remote refs as common refs. | |
412 | * Don't mark them common yet; the server has to be told so first. | |
413 | */ | |
414 | for (ref = *refs; ref; ref = ref->next) { | |
9534f40b JH |
415 | struct object *o = deref_tag(lookup_object(ref->old_sha1), |
416 | NULL, 0); | |
1baaae5e | 417 | |
1974632c | 418 | if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE)) |
1baaae5e JS |
419 | continue; |
420 | ||
421 | if (!(o->flags & SEEN)) { | |
422 | rev_list_push((struct commit *)o, COMMON_REF | SEEN); | |
423 | ||
424 | mark_common((struct commit *)o, 1, 1); | |
425 | } | |
426 | } | |
427 | ||
428 | filter_refs(refs, nr_match, match); | |
429 | ||
430 | for (retval = 1, ref = *refs; ref ; ref = ref->next) { | |
431 | const unsigned char *remote = ref->old_sha1; | |
2759cbc7 | 432 | unsigned char local[20]; |
49bb805e | 433 | struct object *o; |
2759cbc7 | 434 | |
1baaae5e | 435 | o = lookup_object(remote); |
49bb805e | 436 | if (!o || !(o->flags & COMPLETE)) { |
2759cbc7 LT |
437 | retval = 0; |
438 | if (!verbose) | |
439 | continue; | |
440 | fprintf(stderr, | |
441 | "want %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 442 | ref->name); |
2759cbc7 LT |
443 | continue; |
444 | } | |
445 | ||
e702496e | 446 | hashcpy(ref->new_sha1, local); |
2759cbc7 LT |
447 | if (!verbose) |
448 | continue; | |
449 | fprintf(stderr, | |
450 | "already have %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 451 | ref->name); |
2759cbc7 LT |
452 | } |
453 | return retval; | |
454 | } | |
455 | ||
da093d37 NP |
456 | static pid_t setup_sideband(int fd[2], int xd[2]) |
457 | { | |
458 | pid_t side_pid; | |
459 | ||
460 | if (!use_sideband) { | |
461 | fd[0] = xd[0]; | |
462 | fd[1] = xd[1]; | |
463 | return 0; | |
464 | } | |
465 | /* xd[] is talking with upload-pack; subprocess reads from | |
466 | * xd[0], spits out band#2 to stderr, and feeds us band#1 | |
467 | * through our fd[0]. | |
468 | */ | |
469 | if (pipe(fd) < 0) | |
470 | die("fetch-pack: unable to set up pipe"); | |
471 | side_pid = fork(); | |
472 | if (side_pid < 0) | |
473 | die("fetch-pack: unable to fork off sideband demultiplexer"); | |
474 | if (!side_pid) { | |
475 | /* subprocess */ | |
476 | close(fd[0]); | |
477 | if (xd[0] != xd[1]) | |
478 | close(xd[1]); | |
479 | if (recv_sideband("fetch-pack", xd[0], fd[1], 2)) | |
480 | exit(1); | |
481 | exit(0); | |
482 | } | |
483 | close(xd[0]); | |
484 | close(fd[1]); | |
485 | fd[1] = xd[1]; | |
486 | return side_pid; | |
487 | } | |
488 | ||
489 | static int get_pack(int xd[2], const char **argv) | |
490 | { | |
491 | int status; | |
492 | pid_t pid, side_pid; | |
493 | int fd[2]; | |
494 | ||
495 | side_pid = setup_sideband(fd, xd); | |
496 | pid = fork(); | |
497 | if (pid < 0) | |
498 | die("fetch-pack: unable to fork off %s", argv[0]); | |
499 | if (!pid) { | |
500 | dup2(fd[0], 0); | |
501 | close(fd[0]); | |
502 | close(fd[1]); | |
503 | execv_git_cmd(argv); | |
504 | die("%s exec failed", argv[0]); | |
505 | } | |
506 | close(fd[0]); | |
507 | close(fd[1]); | |
508 | while (waitpid(pid, &status, 0) < 0) { | |
509 | if (errno != EINTR) | |
510 | die("waiting for %s: %s", argv[0], strerror(errno)); | |
511 | } | |
512 | if (WIFEXITED(status)) { | |
513 | int code = WEXITSTATUS(status); | |
514 | if (code) | |
515 | die("%s died with error code %d", argv[0], code); | |
516 | return 0; | |
517 | } | |
518 | if (WIFSIGNALED(status)) { | |
519 | int sig = WTERMSIG(status); | |
520 | die("%s died of signal %d", argv[0], sig); | |
521 | } | |
522 | die("%s died of unnatural causes %d", argv[0], status); | |
523 | } | |
524 | ||
525 | static int explode_rx_pack(int xd[2]) | |
526 | { | |
527 | const char *argv[3] = { "unpack-objects", quiet ? "-q" : NULL, NULL }; | |
528 | return get_pack(xd, argv); | |
529 | } | |
530 | ||
531 | static int keep_rx_pack(int xd[2]) | |
532 | { | |
533 | const char *argv[6]; | |
534 | char keep_arg[256]; | |
535 | int n = 0; | |
536 | ||
537 | argv[n++] = "index-pack"; | |
538 | argv[n++] = "--stdin"; | |
539 | if (!quiet) | |
540 | argv[n++] = "-v"; | |
541 | if (use_thin_pack) | |
542 | argv[n++] = "--fix-thin"; | |
543 | if (keep_pack > 1) { | |
544 | int s = sprintf(keep_arg, "--keep=fetch-pack %i on ", getpid()); | |
545 | if (gethostname(keep_arg + s, sizeof(keep_arg) - s)) | |
546 | strcpy(keep_arg + s, "localhost"); | |
547 | argv[n++] = keep_arg; | |
548 | } | |
549 | argv[n] = NULL; | |
550 | return get_pack(xd, argv); | |
551 | } | |
552 | ||
def88e9a LT |
553 | static int fetch_pack(int fd[2], int nr_match, char **match) |
554 | { | |
d1c133f5 LT |
555 | struct ref *ref; |
556 | unsigned char sha1[20]; | |
557 | int status; | |
def88e9a | 558 | |
1baaae5e | 559 | get_remote_heads(fd[0], &ref, 0, NULL, 0); |
ed09aef0 JS |
560 | if (is_repository_shallow() && !server_supports("shallow")) |
561 | die("Server does not support shallow clients"); | |
c4c86f07 JS |
562 | if (server_supports("multi_ack")) { |
563 | if (verbose) | |
564 | fprintf(stderr, "Server supports multi_ack\n"); | |
565 | multi_ack = 1; | |
566 | } | |
d47f3db7 JH |
567 | if (server_supports("side-band-64k")) { |
568 | if (verbose) | |
569 | fprintf(stderr, "Server supports side-band-64k\n"); | |
570 | use_sideband = 2; | |
571 | } | |
572 | else if (server_supports("side-band")) { | |
583b7ea3 JH |
573 | if (verbose) |
574 | fprintf(stderr, "Server supports side-band\n"); | |
575 | use_sideband = 1; | |
576 | } | |
d1c133f5 LT |
577 | if (!ref) { |
578 | packet_flush(fd[1]); | |
579 | die("no matching remote head"); | |
580 | } | |
1baaae5e | 581 | if (everything_local(&ref, nr_match, match)) { |
2759cbc7 LT |
582 | packet_flush(fd[1]); |
583 | goto all_done; | |
584 | } | |
33b83034 | 585 | if (find_common(fd, sha1, ref) < 0) |
da093d37 | 586 | if (keep_pack != 1) |
dfeff66e JH |
587 | /* When cloning, it is not unusual to have |
588 | * no common commit. | |
589 | */ | |
590 | fprintf(stderr, "warning: no common commits\n"); | |
ad897215 | 591 | |
da093d37 | 592 | status = (keep_pack) ? keep_rx_pack(fd) : explode_rx_pack(fd); |
ad897215 JH |
593 | if (status) |
594 | die("git-fetch-pack: fetch failed."); | |
595 | ||
596 | all_done: | |
597 | while (ref) { | |
598 | printf("%s %s\n", | |
599 | sha1_to_hex(ref->old_sha1), ref->name); | |
600 | ref = ref->next; | |
75bfc6c2 | 601 | } |
ad897215 | 602 | return 0; |
def88e9a LT |
603 | } |
604 | ||
310b86d4 JH |
605 | static int remove_duplicates(int nr_heads, char **heads) |
606 | { | |
607 | int src, dst; | |
608 | ||
609 | for (src = dst = 0; src < nr_heads; src++) { | |
610 | /* If heads[src] is different from any of | |
611 | * heads[0..dst], push it in. | |
612 | */ | |
613 | int i; | |
614 | for (i = 0; i < dst; i++) { | |
615 | if (!strcmp(heads[i], heads[src])) | |
616 | break; | |
617 | } | |
618 | if (i < dst) | |
619 | continue; | |
620 | if (src != dst) | |
621 | heads[dst] = heads[src]; | |
622 | dst++; | |
623 | } | |
624 | heads[dst] = 0; | |
625 | return dst; | |
626 | } | |
627 | ||
def88e9a LT |
628 | int main(int argc, char **argv) |
629 | { | |
630 | int i, ret, nr_heads; | |
631 | char *dest = NULL, **heads; | |
632 | int fd[2]; | |
633 | pid_t pid; | |
016e6ccb JS |
634 | struct stat st; |
635 | struct lock_file lock; | |
def88e9a | 636 | |
5a327713 JH |
637 | setup_git_directory(); |
638 | ||
def88e9a LT |
639 | nr_heads = 0; |
640 | heads = NULL; | |
641 | for (i = 1; i < argc; i++) { | |
642 | char *arg = argv[i]; | |
643 | ||
644 | if (*arg == '-') { | |
8b3d9dc0 JH |
645 | if (!strncmp("--exec=", arg, 7)) { |
646 | exec = arg + 7; | |
647 | continue; | |
648 | } | |
2247efb4 | 649 | if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) { |
33b83034 JH |
650 | quiet = 1; |
651 | continue; | |
652 | } | |
2247efb4 | 653 | if (!strcmp("--keep", arg) || !strcmp("-k", arg)) { |
da093d37 | 654 | keep_pack++; |
ad897215 JH |
655 | continue; |
656 | } | |
b19696c2 JH |
657 | if (!strcmp("--thin", arg)) { |
658 | use_thin_pack = 1; | |
659 | continue; | |
660 | } | |
dfeff66e JH |
661 | if (!strcmp("--all", arg)) { |
662 | fetch_all = 1; | |
663 | continue; | |
664 | } | |
33b83034 JH |
665 | if (!strcmp("-v", arg)) { |
666 | verbose = 1; | |
667 | continue; | |
668 | } | |
016e6ccb JS |
669 | if (!strncmp("--depth=", arg, 8)) { |
670 | depth = strtol(arg + 8, NULL, 0); | |
671 | if (stat(git_path("shallow"), &st)) | |
672 | st.st_mtime = 0; | |
673 | continue; | |
674 | } | |
def88e9a LT |
675 | usage(fetch_pack_usage); |
676 | } | |
677 | dest = arg; | |
678 | heads = argv + i + 1; | |
679 | nr_heads = argc - i - 1; | |
680 | break; | |
681 | } | |
682 | if (!dest) | |
683 | usage(fetch_pack_usage); | |
684 | pid = git_connect(fd, dest, exec); | |
685 | if (pid < 0) | |
686 | return 1; | |
310b86d4 JH |
687 | if (heads && nr_heads) |
688 | nr_heads = remove_duplicates(nr_heads, heads); | |
def88e9a LT |
689 | ret = fetch_pack(fd, nr_heads, heads); |
690 | close(fd[0]); | |
691 | close(fd[1]); | |
8a5dbef8 | 692 | ret |= finish_connect(pid); |
9e5d2b40 JH |
693 | |
694 | if (!ret && nr_heads) { | |
695 | /* If the heads to pull were given, we should have | |
696 | * consumed all of them by matching the remote. | |
697 | * Otherwise, 'git-fetch remote no-such-ref' would | |
698 | * silently succeed without issuing an error. | |
699 | */ | |
700 | for (i = 0; i < nr_heads; i++) | |
701 | if (heads[i] && heads[i][0]) { | |
702 | error("no such remote ref %s", heads[i]); | |
703 | ret = 1; | |
704 | } | |
705 | } | |
706 | ||
016e6ccb JS |
707 | if (!ret && depth > 0) { |
708 | struct cache_time mtime; | |
709 | char *shallow = git_path("shallow"); | |
710 | int fd; | |
711 | ||
712 | mtime.sec = st.st_mtime; | |
713 | #ifdef USE_NSEC | |
714 | mtime.usec = st.st_mtim.usec; | |
715 | #endif | |
716 | if (stat(shallow, &st)) { | |
717 | if (mtime.sec) | |
718 | die("shallow file was removed during fetch"); | |
719 | } else if (st.st_mtime != mtime.sec | |
720 | #ifdef USE_NSEC | |
721 | || st.st_mtim.usec != mtime.usec | |
722 | #endif | |
723 | ) | |
724 | die("shallow file was changed during fetch"); | |
725 | ||
726 | fd = hold_lock_file_for_update(&lock, shallow, 1); | |
727 | if (!write_shallow_commits(fd, 0)) { | |
d6491e3a | 728 | unlink(shallow); |
016e6ccb JS |
729 | rollback_lock_file(&lock); |
730 | } else { | |
731 | close(fd); | |
732 | commit_lock_file(&lock); | |
733 | } | |
734 | } | |
735 | ||
8a5dbef8 | 736 | return !!ret; |
def88e9a | 737 | } |