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Commit | Line | Data |
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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 | 6 | #include "exec_cmd.h" |
9e10fd1a | 7 | #include "pack.h" |
da093d37 | 8 | #include "sideband.h" |
def88e9a | 9 | |
ad897215 | 10 | static int keep_pack; |
e28714c5 JH |
11 | static int transfer_unpack_limit = -1; |
12 | static int fetch_unpack_limit = -1; | |
af7cf268 | 13 | static int unpack_limit = 100; |
8b3d9dc0 | 14 | static int quiet; |
33b83034 | 15 | static int verbose; |
dfeff66e | 16 | static int fetch_all; |
016e6ccb | 17 | static int depth; |
33b83034 | 18 | static const char fetch_pack_usage[] = |
27dca07f UKK |
19 | "git-fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--upload-pack=<git-upload-pack>] [--depth=<n>] [-v] [<host>:]<directory> [<refs>...]"; |
20 | static const char *uploadpack = "git-upload-pack"; | |
def88e9a | 21 | |
0a8944dd | 22 | #define COMPLETE (1U << 0) |
23d61f83 JS |
23 | #define COMMON (1U << 1) |
24 | #define COMMON_REF (1U << 2) | |
25 | #define SEEN (1U << 3) | |
26 | #define POPPED (1U << 4) | |
27 | ||
f061e5fd JH |
28 | /* |
29 | * After sending this many "have"s if we do not get any new ACK , we | |
30 | * give up traversing our history. | |
31 | */ | |
32 | #define MAX_IN_VAIN 256 | |
33 | ||
96f1e58f DR |
34 | static struct commit_list *rev_list; |
35 | static int non_common_revs, multi_ack, use_thin_pack, use_sideband; | |
23d61f83 JS |
36 | |
37 | static void rev_list_push(struct commit *commit, int mark) | |
38 | { | |
39 | if (!(commit->object.flags & mark)) { | |
40 | commit->object.flags |= mark; | |
41 | ||
42 | if (!(commit->object.parsed)) | |
43 | parse_commit(commit); | |
44 | ||
45 | insert_by_date(commit, &rev_list); | |
46 | ||
47 | if (!(commit->object.flags & COMMON)) | |
48 | non_common_revs++; | |
49 | } | |
50 | } | |
51 | ||
8da19775 | 52 | static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
23d61f83 | 53 | { |
9534f40b | 54 | struct object *o = deref_tag(parse_object(sha1), path, 0); |
23d61f83 | 55 | |
1974632c | 56 | if (o && o->type == OBJ_COMMIT) |
23d61f83 JS |
57 | rev_list_push((struct commit *)o, SEEN); |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
62 | /* | |
63 | This function marks a rev and its ancestors as common. | |
64 | In some cases, it is desirable to mark only the ancestors (for example | |
65 | when only the server does not yet know that they are common). | |
66 | */ | |
67 | ||
68 | static void mark_common(struct commit *commit, | |
69 | int ancestors_only, int dont_parse) | |
70 | { | |
71 | if (commit != NULL && !(commit->object.flags & COMMON)) { | |
72 | struct object *o = (struct object *)commit; | |
73 | ||
74 | if (!ancestors_only) | |
75 | o->flags |= COMMON; | |
76 | ||
77 | if (!(o->flags & SEEN)) | |
78 | rev_list_push(commit, SEEN); | |
79 | else { | |
80 | struct commit_list *parents; | |
81 | ||
82 | if (!ancestors_only && !(o->flags & POPPED)) | |
83 | non_common_revs--; | |
84 | if (!o->parsed && !dont_parse) | |
85 | parse_commit(commit); | |
86 | ||
87 | for (parents = commit->parents; | |
88 | parents; | |
89 | parents = parents->next) | |
90 | mark_common(parents->item, 0, dont_parse); | |
91 | } | |
92 | } | |
93 | } | |
94 | ||
95 | /* | |
96 | Get the next rev to send, ignoring the common. | |
97 | */ | |
98 | ||
962554c6 | 99 | static const unsigned char* get_rev(void) |
23d61f83 JS |
100 | { |
101 | struct commit *commit = NULL; | |
102 | ||
103 | while (commit == NULL) { | |
104 | unsigned int mark; | |
105 | struct commit_list* parents; | |
106 | ||
107 | if (rev_list == NULL || non_common_revs == 0) | |
108 | return NULL; | |
109 | ||
110 | commit = rev_list->item; | |
111 | if (!(commit->object.parsed)) | |
112 | parse_commit(commit); | |
113 | commit->object.flags |= POPPED; | |
114 | if (!(commit->object.flags & COMMON)) | |
115 | non_common_revs--; | |
116 | ||
117 | parents = commit->parents; | |
118 | ||
119 | if (commit->object.flags & COMMON) { | |
120 | /* do not send "have", and ignore ancestors */ | |
121 | commit = NULL; | |
122 | mark = COMMON | SEEN; | |
123 | } else if (commit->object.flags & COMMON_REF) | |
124 | /* send "have", and ignore ancestors */ | |
125 | mark = COMMON | SEEN; | |
126 | else | |
127 | /* send "have", also for its ancestors */ | |
128 | mark = SEEN; | |
129 | ||
130 | while (parents) { | |
131 | if (!(parents->item->object.flags & SEEN)) | |
132 | rev_list_push(parents->item, mark); | |
133 | if (mark & COMMON) | |
134 | mark_common(parents->item, 1, 0); | |
135 | parents = parents->next; | |
136 | } | |
137 | ||
138 | rev_list = rev_list->next; | |
139 | } | |
140 | ||
141 | return commit->object.sha1; | |
142 | } | |
0a8944dd | 143 | |
33b83034 JH |
144 | static int find_common(int fd[2], unsigned char *result_sha1, |
145 | struct ref *refs) | |
def88e9a | 146 | { |
2759cbc7 | 147 | int fetching; |
23d61f83 JS |
148 | int count = 0, flushes = 0, retval; |
149 | const unsigned char *sha1; | |
f061e5fd JH |
150 | unsigned in_vain = 0; |
151 | int got_continue = 0; | |
23d61f83 | 152 | |
cb5d709f | 153 | for_each_ref(rev_list_insert_ref, NULL); |
def88e9a | 154 | |
2759cbc7 LT |
155 | fetching = 0; |
156 | for ( ; refs ; refs = refs->next) { | |
33b83034 | 157 | unsigned char *remote = refs->old_sha1; |
4dab94d5 | 158 | struct object *o; |
2759cbc7 | 159 | |
0a8944dd | 160 | /* |
4dab94d5 JH |
161 | * If that object is complete (i.e. it is an ancestor of a |
162 | * local ref), we tell them we have it but do not have to | |
163 | * tell them about its ancestors, which they already know | |
164 | * about. | |
f1f0a2be JH |
165 | * |
166 | * We use lookup_object here because we are only | |
167 | * interested in the case we *know* the object is | |
168 | * reachable and we have already scanned it. | |
4dab94d5 | 169 | */ |
f1f0a2be | 170 | if (((o = lookup_object(remote)) != NULL) && |
1baaae5e | 171 | (o->flags & COMPLETE)) { |
2759cbc7 | 172 | continue; |
0a8944dd | 173 | } |
23d61f83 | 174 | |
583b7ea3 | 175 | if (!fetching) |
e4fe4b8e | 176 | packet_write(fd[1], "want %s%s%s%s%s%s\n", |
583b7ea3 JH |
177 | sha1_to_hex(remote), |
178 | (multi_ack ? " multi_ack" : ""), | |
d47f3db7 JH |
179 | (use_sideband == 2 ? " side-band-64k" : ""), |
180 | (use_sideband == 1 ? " side-band" : ""), | |
e4fe4b8e NP |
181 | (use_thin_pack ? " thin-pack" : ""), |
182 | " ofs-delta"); | |
583b7ea3 JH |
183 | else |
184 | packet_write(fd[1], "want %s\n", sha1_to_hex(remote)); | |
2759cbc7 | 185 | fetching++; |
33b83034 | 186 | } |
ed09aef0 JS |
187 | if (is_repository_shallow()) |
188 | write_shallow_commits(fd[1], 1); | |
016e6ccb JS |
189 | if (depth > 0) |
190 | packet_write(fd[1], "deepen %d", depth); | |
fb9040cc | 191 | packet_flush(fd[1]); |
2759cbc7 LT |
192 | if (!fetching) |
193 | return 1; | |
0a8944dd | 194 | |
cf01bd52 | 195 | if (depth > 0) { |
016e6ccb JS |
196 | char line[1024]; |
197 | unsigned char sha1[20]; | |
198 | int len; | |
199 | ||
200 | while ((len = packet_read_line(fd[0], line, sizeof(line)))) { | |
599065a3 | 201 | if (!prefixcmp(line, "shallow ")) { |
016e6ccb JS |
202 | if (get_sha1_hex(line + 8, sha1)) |
203 | die("invalid shallow line: %s", line); | |
016e6ccb | 204 | register_shallow(sha1); |
cf01bd52 JH |
205 | continue; |
206 | } | |
599065a3 | 207 | if (!prefixcmp(line, "unshallow ")) { |
f53514bc JS |
208 | if (get_sha1_hex(line + 10, sha1)) |
209 | die("invalid unshallow line: %s", line); | |
210 | if (!lookup_object(sha1)) | |
211 | die("object not found: %s", line); | |
212 | /* make sure that it is parsed as shallow */ | |
213 | parse_object(sha1); | |
214 | if (unregister_shallow(sha1)) | |
215 | die("no shallow found: %s", line); | |
cf01bd52 JH |
216 | continue; |
217 | } | |
218 | die("expected shallow/unshallow, got %s", line); | |
016e6ccb JS |
219 | } |
220 | } | |
221 | ||
23d61f83 | 222 | flushes = 0; |
75bfc6c2 | 223 | retval = -1; |
23d61f83 | 224 | while ((sha1 = get_rev())) { |
def88e9a | 225 | packet_write(fd[1], "have %s\n", sha1_to_hex(sha1)); |
33b83034 JH |
226 | if (verbose) |
227 | fprintf(stderr, "have %s\n", sha1_to_hex(sha1)); | |
f061e5fd | 228 | in_vain++; |
def88e9a | 229 | if (!(31 & ++count)) { |
c4c86f07 JS |
230 | int ack; |
231 | ||
def88e9a LT |
232 | packet_flush(fd[1]); |
233 | flushes++; | |
234 | ||
235 | /* | |
236 | * We keep one window "ahead" of the other side, and | |
237 | * will wait for an ACK only on the next one | |
238 | */ | |
239 | if (count == 32) | |
240 | continue; | |
c4c86f07 JS |
241 | |
242 | do { | |
243 | ack = get_ack(fd[0], result_sha1); | |
244 | if (verbose && ack) | |
245 | fprintf(stderr, "got ack %d %s\n", ack, | |
246 | sha1_to_hex(result_sha1)); | |
247 | if (ack == 1) { | |
248 | flushes = 0; | |
249 | multi_ack = 0; | |
250 | retval = 0; | |
251 | goto done; | |
252 | } else if (ack == 2) { | |
253 | struct commit *commit = | |
254 | lookup_commit(result_sha1); | |
255 | mark_common(commit, 0, 1); | |
256 | retval = 0; | |
f061e5fd JH |
257 | in_vain = 0; |
258 | got_continue = 1; | |
c4c86f07 JS |
259 | } |
260 | } while (ack); | |
def88e9a | 261 | flushes--; |
f061e5fd JH |
262 | if (got_continue && MAX_IN_VAIN < in_vain) { |
263 | if (verbose) | |
264 | fprintf(stderr, "giving up\n"); | |
265 | break; /* give up */ | |
266 | } | |
def88e9a LT |
267 | } |
268 | } | |
c4c86f07 | 269 | done: |
75bfc6c2 | 270 | packet_write(fd[1], "done\n"); |
33b83034 JH |
271 | if (verbose) |
272 | fprintf(stderr, "done\n"); | |
c4c86f07 JS |
273 | if (retval != 0) { |
274 | multi_ack = 0; | |
23d61f83 | 275 | flushes++; |
c4c86f07 JS |
276 | } |
277 | while (flushes || multi_ack) { | |
278 | int ack = get_ack(fd[0], result_sha1); | |
279 | if (ack) { | |
33b83034 | 280 | if (verbose) |
c4c86f07 JS |
281 | fprintf(stderr, "got ack (%d) %s\n", ack, |
282 | sha1_to_hex(result_sha1)); | |
283 | if (ack == 1) | |
284 | return 0; | |
285 | multi_ack = 1; | |
286 | continue; | |
33b83034 | 287 | } |
c4c86f07 | 288 | flushes--; |
def88e9a | 289 | } |
75bfc6c2 | 290 | return retval; |
def88e9a LT |
291 | } |
292 | ||
96f1e58f | 293 | static struct commit_list *complete; |
49bb805e | 294 | |
8da19775 | 295 | static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
49bb805e JH |
296 | { |
297 | struct object *o = parse_object(sha1); | |
298 | ||
1974632c | 299 | while (o && o->type == OBJ_TAG) { |
f1f0a2be JH |
300 | struct tag *t = (struct tag *) o; |
301 | if (!t->tagged) | |
302 | break; /* broken repository */ | |
49bb805e | 303 | o->flags |= COMPLETE; |
f1f0a2be | 304 | o = parse_object(t->tagged->sha1); |
49bb805e | 305 | } |
1974632c | 306 | if (o && o->type == OBJ_COMMIT) { |
49bb805e JH |
307 | struct commit *commit = (struct commit *)o; |
308 | commit->object.flags |= COMPLETE; | |
309 | insert_by_date(commit, &complete); | |
310 | } | |
311 | return 0; | |
312 | } | |
313 | ||
314 | static void mark_recent_complete_commits(unsigned long cutoff) | |
315 | { | |
316 | while (complete && cutoff <= complete->item->date) { | |
317 | if (verbose) | |
318 | fprintf(stderr, "Marking %s as complete\n", | |
319 | sha1_to_hex(complete->item->object.sha1)); | |
320 | pop_most_recent_commit(&complete, COMPLETE); | |
321 | } | |
322 | } | |
323 | ||
1baaae5e JS |
324 | static void filter_refs(struct ref **refs, int nr_match, char **match) |
325 | { | |
9546010b JH |
326 | struct ref **return_refs; |
327 | struct ref *newlist = NULL; | |
328 | struct ref **newtail = &newlist; | |
329 | struct ref *ref, *next; | |
330 | struct ref *fastarray[32]; | |
331 | ||
332 | if (nr_match && !fetch_all) { | |
333 | if (ARRAY_SIZE(fastarray) < nr_match) | |
334 | return_refs = xcalloc(nr_match, sizeof(struct ref *)); | |
335 | else { | |
336 | return_refs = fastarray; | |
337 | memset(return_refs, 0, sizeof(struct ref *) * nr_match); | |
338 | } | |
339 | } | |
340 | else | |
341 | return_refs = NULL; | |
342 | ||
343 | for (ref = *refs; ref; ref = next) { | |
344 | next = ref->next; | |
345 | if (!memcmp(ref->name, "refs/", 5) && | |
346 | check_ref_format(ref->name + 5)) | |
347 | ; /* trash */ | |
4bcb310c | 348 | else if (fetch_all && |
cc44c765 | 349 | (!depth || prefixcmp(ref->name, "refs/tags/") )) { |
9546010b JH |
350 | *newtail = ref; |
351 | ref->next = NULL; | |
352 | newtail = &ref->next; | |
353 | continue; | |
354 | } | |
355 | else { | |
356 | int order = path_match(ref->name, nr_match, match); | |
357 | if (order) { | |
358 | return_refs[order-1] = ref; | |
359 | continue; /* we will link it later */ | |
360 | } | |
361 | } | |
362 | free(ref); | |
363 | } | |
364 | ||
365 | if (!fetch_all) { | |
366 | int i; | |
367 | for (i = 0; i < nr_match; i++) { | |
368 | ref = return_refs[i]; | |
369 | if (ref) { | |
370 | *newtail = ref; | |
371 | ref->next = NULL; | |
372 | newtail = &ref->next; | |
373 | } | |
374 | } | |
375 | if (return_refs != fastarray) | |
376 | free(return_refs); | |
1baaae5e | 377 | } |
9546010b | 378 | *refs = newlist; |
1baaae5e JS |
379 | } |
380 | ||
381 | static int everything_local(struct ref **refs, int nr_match, char **match) | |
2759cbc7 | 382 | { |
49bb805e | 383 | struct ref *ref; |
2759cbc7 | 384 | int retval; |
49bb805e JH |
385 | unsigned long cutoff = 0; |
386 | ||
387 | track_object_refs = 0; | |
388 | save_commit_buffer = 0; | |
389 | ||
1baaae5e | 390 | for (ref = *refs; ref; ref = ref->next) { |
49bb805e JH |
391 | struct object *o; |
392 | ||
393 | o = parse_object(ref->old_sha1); | |
394 | if (!o) | |
395 | continue; | |
396 | ||
397 | /* We already have it -- which may mean that we were | |
398 | * in sync with the other side at some time after | |
399 | * that (it is OK if we guess wrong here). | |
400 | */ | |
1974632c | 401 | if (o->type == OBJ_COMMIT) { |
49bb805e JH |
402 | struct commit *commit = (struct commit *)o; |
403 | if (!cutoff || cutoff < commit->date) | |
404 | cutoff = commit->date; | |
405 | } | |
406 | } | |
407 | ||
f53514bc JS |
408 | if (!depth) { |
409 | for_each_ref(mark_complete, NULL); | |
410 | if (cutoff) | |
411 | mark_recent_complete_commits(cutoff); | |
412 | } | |
2759cbc7 | 413 | |
1baaae5e JS |
414 | /* |
415 | * Mark all complete remote refs as common refs. | |
416 | * Don't mark them common yet; the server has to be told so first. | |
417 | */ | |
418 | for (ref = *refs; ref; ref = ref->next) { | |
9534f40b JH |
419 | struct object *o = deref_tag(lookup_object(ref->old_sha1), |
420 | NULL, 0); | |
1baaae5e | 421 | |
1974632c | 422 | if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE)) |
1baaae5e JS |
423 | continue; |
424 | ||
425 | if (!(o->flags & SEEN)) { | |
426 | rev_list_push((struct commit *)o, COMMON_REF | SEEN); | |
427 | ||
428 | mark_common((struct commit *)o, 1, 1); | |
429 | } | |
430 | } | |
431 | ||
432 | filter_refs(refs, nr_match, match); | |
433 | ||
434 | for (retval = 1, ref = *refs; ref ; ref = ref->next) { | |
435 | const unsigned char *remote = ref->old_sha1; | |
2759cbc7 | 436 | unsigned char local[20]; |
49bb805e | 437 | struct object *o; |
2759cbc7 | 438 | |
1baaae5e | 439 | o = lookup_object(remote); |
49bb805e | 440 | if (!o || !(o->flags & COMPLETE)) { |
2759cbc7 LT |
441 | retval = 0; |
442 | if (!verbose) | |
443 | continue; | |
444 | fprintf(stderr, | |
445 | "want %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 446 | ref->name); |
2759cbc7 LT |
447 | continue; |
448 | } | |
449 | ||
e702496e | 450 | hashcpy(ref->new_sha1, local); |
2759cbc7 LT |
451 | if (!verbose) |
452 | continue; | |
453 | fprintf(stderr, | |
454 | "already have %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 455 | ref->name); |
2759cbc7 LT |
456 | } |
457 | return retval; | |
458 | } | |
459 | ||
da093d37 NP |
460 | static pid_t setup_sideband(int fd[2], int xd[2]) |
461 | { | |
462 | pid_t side_pid; | |
463 | ||
464 | if (!use_sideband) { | |
465 | fd[0] = xd[0]; | |
466 | fd[1] = xd[1]; | |
467 | return 0; | |
468 | } | |
469 | /* xd[] is talking with upload-pack; subprocess reads from | |
470 | * xd[0], spits out band#2 to stderr, and feeds us band#1 | |
471 | * through our fd[0]. | |
472 | */ | |
473 | if (pipe(fd) < 0) | |
474 | die("fetch-pack: unable to set up pipe"); | |
475 | side_pid = fork(); | |
476 | if (side_pid < 0) | |
477 | die("fetch-pack: unable to fork off sideband demultiplexer"); | |
478 | if (!side_pid) { | |
479 | /* subprocess */ | |
480 | close(fd[0]); | |
481 | if (xd[0] != xd[1]) | |
482 | close(xd[1]); | |
483 | if (recv_sideband("fetch-pack", xd[0], fd[1], 2)) | |
484 | exit(1); | |
485 | exit(0); | |
486 | } | |
487 | close(xd[0]); | |
488 | close(fd[1]); | |
489 | fd[1] = xd[1]; | |
490 | return side_pid; | |
491 | } | |
492 | ||
9e10fd1a | 493 | static int get_pack(int xd[2]) |
da093d37 NP |
494 | { |
495 | int status; | |
496 | pid_t pid, side_pid; | |
497 | int fd[2]; | |
9e10fd1a JH |
498 | const char *argv[20]; |
499 | char keep_arg[256]; | |
500 | char hdr_arg[256]; | |
501 | const char **av; | |
502 | int do_keep = keep_pack; | |
da093d37 NP |
503 | |
504 | side_pid = setup_sideband(fd, xd); | |
9e10fd1a JH |
505 | |
506 | av = argv; | |
507 | *hdr_arg = 0; | |
af7cf268 | 508 | if (unpack_limit) { |
9e10fd1a JH |
509 | struct pack_header header; |
510 | ||
511 | if (read_pack_header(fd[0], &header)) | |
512 | die("protocol error: bad pack header"); | |
513 | snprintf(hdr_arg, sizeof(hdr_arg), "--pack_header=%u,%u", | |
514 | ntohl(header.hdr_version), ntohl(header.hdr_entries)); | |
af7cf268 | 515 | if (ntohl(header.hdr_entries) < unpack_limit) |
9e10fd1a JH |
516 | do_keep = 0; |
517 | else | |
518 | do_keep = 1; | |
519 | } | |
520 | ||
521 | if (do_keep) { | |
522 | *av++ = "index-pack"; | |
523 | *av++ = "--stdin"; | |
524 | if (!quiet) | |
525 | *av++ = "-v"; | |
526 | if (use_thin_pack) | |
527 | *av++ = "--fix-thin"; | |
af7cf268 | 528 | if (keep_pack > 1 || unpack_limit) { |
9e10fd1a JH |
529 | int s = sprintf(keep_arg, |
530 | "--keep=fetch-pack %d on ", getpid()); | |
531 | if (gethostname(keep_arg + s, sizeof(keep_arg) - s)) | |
532 | strcpy(keep_arg + s, "localhost"); | |
533 | *av++ = keep_arg; | |
534 | } | |
535 | } | |
536 | else { | |
537 | *av++ = "unpack-objects"; | |
538 | if (quiet) | |
539 | *av++ = "-q"; | |
540 | } | |
541 | if (*hdr_arg) | |
542 | *av++ = hdr_arg; | |
543 | *av++ = NULL; | |
544 | ||
da093d37 NP |
545 | pid = fork(); |
546 | if (pid < 0) | |
547 | die("fetch-pack: unable to fork off %s", argv[0]); | |
548 | if (!pid) { | |
549 | dup2(fd[0], 0); | |
550 | close(fd[0]); | |
551 | close(fd[1]); | |
552 | execv_git_cmd(argv); | |
553 | die("%s exec failed", argv[0]); | |
554 | } | |
555 | close(fd[0]); | |
556 | close(fd[1]); | |
557 | while (waitpid(pid, &status, 0) < 0) { | |
558 | if (errno != EINTR) | |
559 | die("waiting for %s: %s", argv[0], strerror(errno)); | |
560 | } | |
561 | if (WIFEXITED(status)) { | |
562 | int code = WEXITSTATUS(status); | |
563 | if (code) | |
564 | die("%s died with error code %d", argv[0], code); | |
565 | return 0; | |
566 | } | |
567 | if (WIFSIGNALED(status)) { | |
568 | int sig = WTERMSIG(status); | |
569 | die("%s died of signal %d", argv[0], sig); | |
570 | } | |
571 | die("%s died of unnatural causes %d", argv[0], status); | |
572 | } | |
573 | ||
def88e9a LT |
574 | static int fetch_pack(int fd[2], int nr_match, char **match) |
575 | { | |
d1c133f5 LT |
576 | struct ref *ref; |
577 | unsigned char sha1[20]; | |
def88e9a | 578 | |
1baaae5e | 579 | get_remote_heads(fd[0], &ref, 0, NULL, 0); |
ed09aef0 JS |
580 | if (is_repository_shallow() && !server_supports("shallow")) |
581 | die("Server does not support shallow clients"); | |
c4c86f07 JS |
582 | if (server_supports("multi_ack")) { |
583 | if (verbose) | |
584 | fprintf(stderr, "Server supports multi_ack\n"); | |
585 | multi_ack = 1; | |
586 | } | |
d47f3db7 JH |
587 | if (server_supports("side-band-64k")) { |
588 | if (verbose) | |
589 | fprintf(stderr, "Server supports side-band-64k\n"); | |
590 | use_sideband = 2; | |
591 | } | |
592 | else if (server_supports("side-band")) { | |
583b7ea3 JH |
593 | if (verbose) |
594 | fprintf(stderr, "Server supports side-band\n"); | |
595 | use_sideband = 1; | |
596 | } | |
d1c133f5 LT |
597 | if (!ref) { |
598 | packet_flush(fd[1]); | |
599 | die("no matching remote head"); | |
600 | } | |
1baaae5e | 601 | if (everything_local(&ref, nr_match, match)) { |
2759cbc7 LT |
602 | packet_flush(fd[1]); |
603 | goto all_done; | |
604 | } | |
33b83034 | 605 | if (find_common(fd, sha1, ref) < 0) |
da093d37 | 606 | if (keep_pack != 1) |
dfeff66e JH |
607 | /* When cloning, it is not unusual to have |
608 | * no common commit. | |
609 | */ | |
610 | fprintf(stderr, "warning: no common commits\n"); | |
ad897215 | 611 | |
9e10fd1a | 612 | if (get_pack(fd)) |
ad897215 JH |
613 | die("git-fetch-pack: fetch failed."); |
614 | ||
615 | all_done: | |
616 | while (ref) { | |
617 | printf("%s %s\n", | |
618 | sha1_to_hex(ref->old_sha1), ref->name); | |
619 | ref = ref->next; | |
75bfc6c2 | 620 | } |
ad897215 | 621 | return 0; |
def88e9a LT |
622 | } |
623 | ||
310b86d4 JH |
624 | static int remove_duplicates(int nr_heads, char **heads) |
625 | { | |
626 | int src, dst; | |
627 | ||
628 | for (src = dst = 0; src < nr_heads; src++) { | |
629 | /* If heads[src] is different from any of | |
630 | * heads[0..dst], push it in. | |
631 | */ | |
632 | int i; | |
633 | for (i = 0; i < dst; i++) { | |
634 | if (!strcmp(heads[i], heads[src])) | |
635 | break; | |
636 | } | |
637 | if (i < dst) | |
638 | continue; | |
639 | if (src != dst) | |
640 | heads[dst] = heads[src]; | |
641 | dst++; | |
642 | } | |
643 | heads[dst] = 0; | |
644 | return dst; | |
645 | } | |
646 | ||
af7cf268 JH |
647 | static int fetch_pack_config(const char *var, const char *value) |
648 | { | |
649 | if (strcmp(var, "fetch.unpacklimit") == 0) { | |
e28714c5 JH |
650 | fetch_unpack_limit = git_config_int(var, value); |
651 | return 0; | |
652 | } | |
653 | ||
654 | if (strcmp(var, "transfer.unpacklimit") == 0) { | |
655 | transfer_unpack_limit = git_config_int(var, value); | |
af7cf268 JH |
656 | return 0; |
657 | } | |
658 | ||
659 | return git_default_config(var, value); | |
660 | } | |
661 | ||
54b9e022 JH |
662 | static struct lock_file lock; |
663 | ||
def88e9a LT |
664 | int main(int argc, char **argv) |
665 | { | |
666 | int i, ret, nr_heads; | |
667 | char *dest = NULL, **heads; | |
668 | int fd[2]; | |
669 | pid_t pid; | |
016e6ccb | 670 | struct stat st; |
def88e9a | 671 | |
5a327713 | 672 | setup_git_directory(); |
af7cf268 | 673 | git_config(fetch_pack_config); |
5a327713 | 674 | |
e28714c5 JH |
675 | if (0 <= transfer_unpack_limit) |
676 | unpack_limit = transfer_unpack_limit; | |
677 | else if (0 <= fetch_unpack_limit) | |
678 | unpack_limit = fetch_unpack_limit; | |
679 | ||
def88e9a LT |
680 | nr_heads = 0; |
681 | heads = NULL; | |
682 | for (i = 1; i < argc; i++) { | |
683 | char *arg = argv[i]; | |
684 | ||
685 | if (*arg == '-') { | |
599065a3 | 686 | if (!prefixcmp(arg, "--upload-pack=")) { |
27dca07f UKK |
687 | uploadpack = arg + 14; |
688 | continue; | |
689 | } | |
599065a3 | 690 | if (!prefixcmp(arg, "--exec=")) { |
27dca07f | 691 | uploadpack = arg + 7; |
8b3d9dc0 JH |
692 | continue; |
693 | } | |
2247efb4 | 694 | if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) { |
33b83034 JH |
695 | quiet = 1; |
696 | continue; | |
697 | } | |
2247efb4 | 698 | if (!strcmp("--keep", arg) || !strcmp("-k", arg)) { |
da093d37 | 699 | keep_pack++; |
af7cf268 | 700 | unpack_limit = 0; |
9e10fd1a JH |
701 | continue; |
702 | } | |
b19696c2 JH |
703 | if (!strcmp("--thin", arg)) { |
704 | use_thin_pack = 1; | |
705 | continue; | |
706 | } | |
dfeff66e JH |
707 | if (!strcmp("--all", arg)) { |
708 | fetch_all = 1; | |
709 | continue; | |
710 | } | |
33b83034 JH |
711 | if (!strcmp("-v", arg)) { |
712 | verbose = 1; | |
713 | continue; | |
714 | } | |
599065a3 | 715 | if (!prefixcmp(arg, "--depth=")) { |
016e6ccb JS |
716 | depth = strtol(arg + 8, NULL, 0); |
717 | if (stat(git_path("shallow"), &st)) | |
718 | st.st_mtime = 0; | |
719 | continue; | |
720 | } | |
def88e9a LT |
721 | usage(fetch_pack_usage); |
722 | } | |
723 | dest = arg; | |
724 | heads = argv + i + 1; | |
725 | nr_heads = argc - i - 1; | |
726 | break; | |
727 | } | |
728 | if (!dest) | |
729 | usage(fetch_pack_usage); | |
27dca07f | 730 | pid = git_connect(fd, dest, uploadpack); |
def88e9a LT |
731 | if (pid < 0) |
732 | return 1; | |
310b86d4 JH |
733 | if (heads && nr_heads) |
734 | nr_heads = remove_duplicates(nr_heads, heads); | |
def88e9a LT |
735 | ret = fetch_pack(fd, nr_heads, heads); |
736 | close(fd[0]); | |
737 | close(fd[1]); | |
8a5dbef8 | 738 | ret |= finish_connect(pid); |
9e5d2b40 JH |
739 | |
740 | if (!ret && nr_heads) { | |
741 | /* If the heads to pull were given, we should have | |
742 | * consumed all of them by matching the remote. | |
743 | * Otherwise, 'git-fetch remote no-such-ref' would | |
744 | * silently succeed without issuing an error. | |
745 | */ | |
746 | for (i = 0; i < nr_heads; i++) | |
747 | if (heads[i] && heads[i][0]) { | |
748 | error("no such remote ref %s", heads[i]); | |
749 | ret = 1; | |
750 | } | |
751 | } | |
752 | ||
016e6ccb JS |
753 | if (!ret && depth > 0) { |
754 | struct cache_time mtime; | |
755 | char *shallow = git_path("shallow"); | |
756 | int fd; | |
757 | ||
758 | mtime.sec = st.st_mtime; | |
759 | #ifdef USE_NSEC | |
760 | mtime.usec = st.st_mtim.usec; | |
761 | #endif | |
762 | if (stat(shallow, &st)) { | |
763 | if (mtime.sec) | |
764 | die("shallow file was removed during fetch"); | |
765 | } else if (st.st_mtime != mtime.sec | |
766 | #ifdef USE_NSEC | |
767 | || st.st_mtim.usec != mtime.usec | |
768 | #endif | |
769 | ) | |
770 | die("shallow file was changed during fetch"); | |
771 | ||
772 | fd = hold_lock_file_for_update(&lock, shallow, 1); | |
773 | if (!write_shallow_commits(fd, 0)) { | |
d6491e3a | 774 | unlink(shallow); |
016e6ccb JS |
775 | rollback_lock_file(&lock); |
776 | } else { | |
777 | close(fd); | |
778 | commit_lock_file(&lock); | |
779 | } | |
780 | } | |
781 | ||
8a5dbef8 | 782 | return !!ret; |
def88e9a | 783 | } |