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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; |
83a5ad61 | 18 | static int no_progress; |
33b83034 | 19 | static const char fetch_pack_usage[] = |
83a5ad61 | 20 | "git-fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]"; |
27dca07f | 21 | static const char *uploadpack = "git-upload-pack"; |
def88e9a | 22 | |
0a8944dd | 23 | #define COMPLETE (1U << 0) |
23d61f83 JS |
24 | #define COMMON (1U << 1) |
25 | #define COMMON_REF (1U << 2) | |
26 | #define SEEN (1U << 3) | |
27 | #define POPPED (1U << 4) | |
28 | ||
f061e5fd JH |
29 | /* |
30 | * After sending this many "have"s if we do not get any new ACK , we | |
31 | * give up traversing our history. | |
32 | */ | |
33 | #define MAX_IN_VAIN 256 | |
34 | ||
96f1e58f DR |
35 | static struct commit_list *rev_list; |
36 | static int non_common_revs, multi_ack, use_thin_pack, use_sideband; | |
23d61f83 JS |
37 | |
38 | static void rev_list_push(struct commit *commit, int mark) | |
39 | { | |
40 | if (!(commit->object.flags & mark)) { | |
41 | commit->object.flags |= mark; | |
42 | ||
43 | if (!(commit->object.parsed)) | |
44 | parse_commit(commit); | |
45 | ||
46 | insert_by_date(commit, &rev_list); | |
47 | ||
48 | if (!(commit->object.flags & COMMON)) | |
49 | non_common_revs++; | |
50 | } | |
51 | } | |
52 | ||
8da19775 | 53 | static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
23d61f83 | 54 | { |
9534f40b | 55 | struct object *o = deref_tag(parse_object(sha1), path, 0); |
23d61f83 | 56 | |
1974632c | 57 | if (o && o->type == OBJ_COMMIT) |
23d61f83 JS |
58 | rev_list_push((struct commit *)o, SEEN); |
59 | ||
60 | return 0; | |
61 | } | |
62 | ||
63 | /* | |
64 | This function marks a rev and its ancestors as common. | |
65 | In some cases, it is desirable to mark only the ancestors (for example | |
66 | when only the server does not yet know that they are common). | |
67 | */ | |
68 | ||
69 | static void mark_common(struct commit *commit, | |
70 | int ancestors_only, int dont_parse) | |
71 | { | |
72 | if (commit != NULL && !(commit->object.flags & COMMON)) { | |
73 | struct object *o = (struct object *)commit; | |
74 | ||
75 | if (!ancestors_only) | |
76 | o->flags |= COMMON; | |
77 | ||
78 | if (!(o->flags & SEEN)) | |
79 | rev_list_push(commit, SEEN); | |
80 | else { | |
81 | struct commit_list *parents; | |
82 | ||
83 | if (!ancestors_only && !(o->flags & POPPED)) | |
84 | non_common_revs--; | |
85 | if (!o->parsed && !dont_parse) | |
86 | parse_commit(commit); | |
87 | ||
88 | for (parents = commit->parents; | |
89 | parents; | |
90 | parents = parents->next) | |
91 | mark_common(parents->item, 0, dont_parse); | |
92 | } | |
93 | } | |
94 | } | |
95 | ||
96 | /* | |
97 | Get the next rev to send, ignoring the common. | |
98 | */ | |
99 | ||
962554c6 | 100 | static const unsigned char* get_rev(void) |
23d61f83 JS |
101 | { |
102 | struct commit *commit = NULL; | |
103 | ||
104 | while (commit == NULL) { | |
105 | unsigned int mark; | |
106 | struct commit_list* parents; | |
107 | ||
108 | if (rev_list == NULL || non_common_revs == 0) | |
109 | return NULL; | |
110 | ||
111 | commit = rev_list->item; | |
112 | if (!(commit->object.parsed)) | |
113 | parse_commit(commit); | |
114 | commit->object.flags |= POPPED; | |
115 | if (!(commit->object.flags & COMMON)) | |
116 | non_common_revs--; | |
117 | ||
118 | parents = commit->parents; | |
119 | ||
120 | if (commit->object.flags & COMMON) { | |
121 | /* do not send "have", and ignore ancestors */ | |
122 | commit = NULL; | |
123 | mark = COMMON | SEEN; | |
124 | } else if (commit->object.flags & COMMON_REF) | |
125 | /* send "have", and ignore ancestors */ | |
126 | mark = COMMON | SEEN; | |
127 | else | |
128 | /* send "have", also for its ancestors */ | |
129 | mark = SEEN; | |
130 | ||
131 | while (parents) { | |
132 | if (!(parents->item->object.flags & SEEN)) | |
133 | rev_list_push(parents->item, mark); | |
134 | if (mark & COMMON) | |
135 | mark_common(parents->item, 1, 0); | |
136 | parents = parents->next; | |
137 | } | |
138 | ||
139 | rev_list = rev_list->next; | |
140 | } | |
141 | ||
142 | return commit->object.sha1; | |
143 | } | |
0a8944dd | 144 | |
33b83034 JH |
145 | static int find_common(int fd[2], unsigned char *result_sha1, |
146 | struct ref *refs) | |
def88e9a | 147 | { |
2759cbc7 | 148 | int fetching; |
23d61f83 JS |
149 | int count = 0, flushes = 0, retval; |
150 | const unsigned char *sha1; | |
f061e5fd JH |
151 | unsigned in_vain = 0; |
152 | int got_continue = 0; | |
23d61f83 | 153 | |
cb5d709f | 154 | for_each_ref(rev_list_insert_ref, NULL); |
def88e9a | 155 | |
2759cbc7 LT |
156 | fetching = 0; |
157 | for ( ; refs ; refs = refs->next) { | |
33b83034 | 158 | unsigned char *remote = refs->old_sha1; |
4dab94d5 | 159 | struct object *o; |
2759cbc7 | 160 | |
0a8944dd | 161 | /* |
4dab94d5 JH |
162 | * If that object is complete (i.e. it is an ancestor of a |
163 | * local ref), we tell them we have it but do not have to | |
164 | * tell them about its ancestors, which they already know | |
165 | * about. | |
f1f0a2be JH |
166 | * |
167 | * We use lookup_object here because we are only | |
168 | * interested in the case we *know* the object is | |
169 | * reachable and we have already scanned it. | |
4dab94d5 | 170 | */ |
f1f0a2be | 171 | if (((o = lookup_object(remote)) != NULL) && |
1baaae5e | 172 | (o->flags & COMPLETE)) { |
2759cbc7 | 173 | continue; |
0a8944dd | 174 | } |
23d61f83 | 175 | |
583b7ea3 | 176 | if (!fetching) |
b0e90897 | 177 | packet_write(fd[1], "want %s%s%s%s%s%s%s\n", |
583b7ea3 JH |
178 | sha1_to_hex(remote), |
179 | (multi_ack ? " multi_ack" : ""), | |
d47f3db7 JH |
180 | (use_sideband == 2 ? " side-band-64k" : ""), |
181 | (use_sideband == 1 ? " side-band" : ""), | |
e4fe4b8e | 182 | (use_thin_pack ? " thin-pack" : ""), |
b0e90897 | 183 | (no_progress ? " no-progress" : ""), |
e4fe4b8e | 184 | " ofs-delta"); |
583b7ea3 JH |
185 | else |
186 | packet_write(fd[1], "want %s\n", sha1_to_hex(remote)); | |
2759cbc7 | 187 | fetching++; |
33b83034 | 188 | } |
ed09aef0 JS |
189 | if (is_repository_shallow()) |
190 | write_shallow_commits(fd[1], 1); | |
016e6ccb JS |
191 | if (depth > 0) |
192 | packet_write(fd[1], "deepen %d", depth); | |
fb9040cc | 193 | packet_flush(fd[1]); |
2759cbc7 LT |
194 | if (!fetching) |
195 | return 1; | |
0a8944dd | 196 | |
cf01bd52 | 197 | if (depth > 0) { |
016e6ccb JS |
198 | char line[1024]; |
199 | unsigned char sha1[20]; | |
200 | int len; | |
201 | ||
202 | while ((len = packet_read_line(fd[0], line, sizeof(line)))) { | |
599065a3 | 203 | if (!prefixcmp(line, "shallow ")) { |
016e6ccb JS |
204 | if (get_sha1_hex(line + 8, sha1)) |
205 | die("invalid shallow line: %s", line); | |
016e6ccb | 206 | register_shallow(sha1); |
cf01bd52 JH |
207 | continue; |
208 | } | |
599065a3 | 209 | if (!prefixcmp(line, "unshallow ")) { |
f53514bc JS |
210 | if (get_sha1_hex(line + 10, sha1)) |
211 | die("invalid unshallow line: %s", line); | |
212 | if (!lookup_object(sha1)) | |
213 | die("object not found: %s", line); | |
214 | /* make sure that it is parsed as shallow */ | |
215 | parse_object(sha1); | |
216 | if (unregister_shallow(sha1)) | |
217 | die("no shallow found: %s", line); | |
cf01bd52 JH |
218 | continue; |
219 | } | |
220 | die("expected shallow/unshallow, got %s", line); | |
016e6ccb JS |
221 | } |
222 | } | |
223 | ||
23d61f83 | 224 | flushes = 0; |
75bfc6c2 | 225 | retval = -1; |
23d61f83 | 226 | while ((sha1 = get_rev())) { |
def88e9a | 227 | packet_write(fd[1], "have %s\n", sha1_to_hex(sha1)); |
33b83034 JH |
228 | if (verbose) |
229 | fprintf(stderr, "have %s\n", sha1_to_hex(sha1)); | |
f061e5fd | 230 | in_vain++; |
def88e9a | 231 | if (!(31 & ++count)) { |
c4c86f07 JS |
232 | int ack; |
233 | ||
def88e9a LT |
234 | packet_flush(fd[1]); |
235 | flushes++; | |
236 | ||
237 | /* | |
238 | * We keep one window "ahead" of the other side, and | |
239 | * will wait for an ACK only on the next one | |
240 | */ | |
241 | if (count == 32) | |
242 | continue; | |
c4c86f07 JS |
243 | |
244 | do { | |
245 | ack = get_ack(fd[0], result_sha1); | |
246 | if (verbose && ack) | |
247 | fprintf(stderr, "got ack %d %s\n", ack, | |
248 | sha1_to_hex(result_sha1)); | |
249 | if (ack == 1) { | |
250 | flushes = 0; | |
251 | multi_ack = 0; | |
252 | retval = 0; | |
253 | goto done; | |
254 | } else if (ack == 2) { | |
255 | struct commit *commit = | |
256 | lookup_commit(result_sha1); | |
257 | mark_common(commit, 0, 1); | |
258 | retval = 0; | |
f061e5fd JH |
259 | in_vain = 0; |
260 | got_continue = 1; | |
c4c86f07 JS |
261 | } |
262 | } while (ack); | |
def88e9a | 263 | flushes--; |
f061e5fd JH |
264 | if (got_continue && MAX_IN_VAIN < in_vain) { |
265 | if (verbose) | |
266 | fprintf(stderr, "giving up\n"); | |
267 | break; /* give up */ | |
268 | } | |
def88e9a LT |
269 | } |
270 | } | |
c4c86f07 | 271 | done: |
75bfc6c2 | 272 | packet_write(fd[1], "done\n"); |
33b83034 JH |
273 | if (verbose) |
274 | fprintf(stderr, "done\n"); | |
c4c86f07 JS |
275 | if (retval != 0) { |
276 | multi_ack = 0; | |
23d61f83 | 277 | flushes++; |
c4c86f07 JS |
278 | } |
279 | while (flushes || multi_ack) { | |
280 | int ack = get_ack(fd[0], result_sha1); | |
281 | if (ack) { | |
33b83034 | 282 | if (verbose) |
c4c86f07 JS |
283 | fprintf(stderr, "got ack (%d) %s\n", ack, |
284 | sha1_to_hex(result_sha1)); | |
285 | if (ack == 1) | |
286 | return 0; | |
287 | multi_ack = 1; | |
288 | continue; | |
33b83034 | 289 | } |
c4c86f07 | 290 | flushes--; |
def88e9a | 291 | } |
75bfc6c2 | 292 | return retval; |
def88e9a LT |
293 | } |
294 | ||
96f1e58f | 295 | static struct commit_list *complete; |
49bb805e | 296 | |
8da19775 | 297 | static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
49bb805e JH |
298 | { |
299 | struct object *o = parse_object(sha1); | |
300 | ||
1974632c | 301 | while (o && o->type == OBJ_TAG) { |
f1f0a2be JH |
302 | struct tag *t = (struct tag *) o; |
303 | if (!t->tagged) | |
304 | break; /* broken repository */ | |
49bb805e | 305 | o->flags |= COMPLETE; |
f1f0a2be | 306 | o = parse_object(t->tagged->sha1); |
49bb805e | 307 | } |
1974632c | 308 | if (o && o->type == OBJ_COMMIT) { |
49bb805e JH |
309 | struct commit *commit = (struct commit *)o; |
310 | commit->object.flags |= COMPLETE; | |
311 | insert_by_date(commit, &complete); | |
312 | } | |
313 | return 0; | |
314 | } | |
315 | ||
316 | static void mark_recent_complete_commits(unsigned long cutoff) | |
317 | { | |
318 | while (complete && cutoff <= complete->item->date) { | |
319 | if (verbose) | |
320 | fprintf(stderr, "Marking %s as complete\n", | |
321 | sha1_to_hex(complete->item->object.sha1)); | |
322 | pop_most_recent_commit(&complete, COMPLETE); | |
323 | } | |
324 | } | |
325 | ||
1baaae5e JS |
326 | static void filter_refs(struct ref **refs, int nr_match, char **match) |
327 | { | |
9546010b JH |
328 | struct ref **return_refs; |
329 | struct ref *newlist = NULL; | |
330 | struct ref **newtail = &newlist; | |
331 | struct ref *ref, *next; | |
332 | struct ref *fastarray[32]; | |
333 | ||
334 | if (nr_match && !fetch_all) { | |
335 | if (ARRAY_SIZE(fastarray) < nr_match) | |
336 | return_refs = xcalloc(nr_match, sizeof(struct ref *)); | |
337 | else { | |
338 | return_refs = fastarray; | |
339 | memset(return_refs, 0, sizeof(struct ref *) * nr_match); | |
340 | } | |
341 | } | |
342 | else | |
343 | return_refs = NULL; | |
344 | ||
345 | for (ref = *refs; ref; ref = next) { | |
346 | next = ref->next; | |
347 | if (!memcmp(ref->name, "refs/", 5) && | |
348 | check_ref_format(ref->name + 5)) | |
349 | ; /* trash */ | |
4bcb310c | 350 | else if (fetch_all && |
cc44c765 | 351 | (!depth || prefixcmp(ref->name, "refs/tags/") )) { |
9546010b JH |
352 | *newtail = ref; |
353 | ref->next = NULL; | |
354 | newtail = &ref->next; | |
355 | continue; | |
356 | } | |
357 | else { | |
358 | int order = path_match(ref->name, nr_match, match); | |
359 | if (order) { | |
360 | return_refs[order-1] = ref; | |
361 | continue; /* we will link it later */ | |
362 | } | |
363 | } | |
364 | free(ref); | |
365 | } | |
366 | ||
367 | if (!fetch_all) { | |
368 | int i; | |
369 | for (i = 0; i < nr_match; i++) { | |
370 | ref = return_refs[i]; | |
371 | if (ref) { | |
372 | *newtail = ref; | |
373 | ref->next = NULL; | |
374 | newtail = &ref->next; | |
375 | } | |
376 | } | |
377 | if (return_refs != fastarray) | |
378 | free(return_refs); | |
1baaae5e | 379 | } |
9546010b | 380 | *refs = newlist; |
1baaae5e JS |
381 | } |
382 | ||
383 | static int everything_local(struct ref **refs, int nr_match, char **match) | |
2759cbc7 | 384 | { |
49bb805e | 385 | struct ref *ref; |
2759cbc7 | 386 | int retval; |
49bb805e JH |
387 | unsigned long cutoff = 0; |
388 | ||
389 | track_object_refs = 0; | |
390 | save_commit_buffer = 0; | |
391 | ||
1baaae5e | 392 | for (ref = *refs; ref; ref = ref->next) { |
49bb805e JH |
393 | struct object *o; |
394 | ||
395 | o = parse_object(ref->old_sha1); | |
396 | if (!o) | |
397 | continue; | |
398 | ||
399 | /* We already have it -- which may mean that we were | |
400 | * in sync with the other side at some time after | |
401 | * that (it is OK if we guess wrong here). | |
402 | */ | |
1974632c | 403 | if (o->type == OBJ_COMMIT) { |
49bb805e JH |
404 | struct commit *commit = (struct commit *)o; |
405 | if (!cutoff || cutoff < commit->date) | |
406 | cutoff = commit->date; | |
407 | } | |
408 | } | |
409 | ||
f53514bc JS |
410 | if (!depth) { |
411 | for_each_ref(mark_complete, NULL); | |
412 | if (cutoff) | |
413 | mark_recent_complete_commits(cutoff); | |
414 | } | |
2759cbc7 | 415 | |
1baaae5e JS |
416 | /* |
417 | * Mark all complete remote refs as common refs. | |
418 | * Don't mark them common yet; the server has to be told so first. | |
419 | */ | |
420 | for (ref = *refs; ref; ref = ref->next) { | |
9534f40b JH |
421 | struct object *o = deref_tag(lookup_object(ref->old_sha1), |
422 | NULL, 0); | |
1baaae5e | 423 | |
1974632c | 424 | if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE)) |
1baaae5e JS |
425 | continue; |
426 | ||
427 | if (!(o->flags & SEEN)) { | |
428 | rev_list_push((struct commit *)o, COMMON_REF | SEEN); | |
429 | ||
430 | mark_common((struct commit *)o, 1, 1); | |
431 | } | |
432 | } | |
433 | ||
434 | filter_refs(refs, nr_match, match); | |
435 | ||
436 | for (retval = 1, ref = *refs; ref ; ref = ref->next) { | |
437 | const unsigned char *remote = ref->old_sha1; | |
2759cbc7 | 438 | unsigned char local[20]; |
49bb805e | 439 | struct object *o; |
2759cbc7 | 440 | |
1baaae5e | 441 | o = lookup_object(remote); |
49bb805e | 442 | if (!o || !(o->flags & COMPLETE)) { |
2759cbc7 LT |
443 | retval = 0; |
444 | if (!verbose) | |
445 | continue; | |
446 | fprintf(stderr, | |
447 | "want %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 448 | ref->name); |
2759cbc7 LT |
449 | continue; |
450 | } | |
451 | ||
e702496e | 452 | hashcpy(ref->new_sha1, local); |
2759cbc7 LT |
453 | if (!verbose) |
454 | continue; | |
455 | fprintf(stderr, | |
456 | "already have %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 457 | ref->name); |
2759cbc7 LT |
458 | } |
459 | return retval; | |
460 | } | |
461 | ||
da093d37 NP |
462 | static pid_t setup_sideband(int fd[2], int xd[2]) |
463 | { | |
464 | pid_t side_pid; | |
465 | ||
466 | if (!use_sideband) { | |
467 | fd[0] = xd[0]; | |
468 | fd[1] = xd[1]; | |
469 | return 0; | |
470 | } | |
471 | /* xd[] is talking with upload-pack; subprocess reads from | |
472 | * xd[0], spits out band#2 to stderr, and feeds us band#1 | |
473 | * through our fd[0]. | |
474 | */ | |
475 | if (pipe(fd) < 0) | |
476 | die("fetch-pack: unable to set up pipe"); | |
477 | side_pid = fork(); | |
478 | if (side_pid < 0) | |
479 | die("fetch-pack: unable to fork off sideband demultiplexer"); | |
480 | if (!side_pid) { | |
481 | /* subprocess */ | |
482 | close(fd[0]); | |
483 | if (xd[0] != xd[1]) | |
484 | close(xd[1]); | |
485 | if (recv_sideband("fetch-pack", xd[0], fd[1], 2)) | |
486 | exit(1); | |
487 | exit(0); | |
488 | } | |
489 | close(xd[0]); | |
490 | close(fd[1]); | |
491 | fd[1] = xd[1]; | |
492 | return side_pid; | |
493 | } | |
494 | ||
9e10fd1a | 495 | static int get_pack(int xd[2]) |
da093d37 NP |
496 | { |
497 | int status; | |
498 | pid_t pid, side_pid; | |
499 | int fd[2]; | |
9e10fd1a JH |
500 | const char *argv[20]; |
501 | char keep_arg[256]; | |
502 | char hdr_arg[256]; | |
503 | const char **av; | |
504 | int do_keep = keep_pack; | |
da093d37 NP |
505 | |
506 | side_pid = setup_sideband(fd, xd); | |
9e10fd1a JH |
507 | |
508 | av = argv; | |
509 | *hdr_arg = 0; | |
af7cf268 | 510 | if (unpack_limit) { |
9e10fd1a JH |
511 | struct pack_header header; |
512 | ||
513 | if (read_pack_header(fd[0], &header)) | |
514 | die("protocol error: bad pack header"); | |
515 | snprintf(hdr_arg, sizeof(hdr_arg), "--pack_header=%u,%u", | |
516 | ntohl(header.hdr_version), ntohl(header.hdr_entries)); | |
af7cf268 | 517 | if (ntohl(header.hdr_entries) < unpack_limit) |
9e10fd1a JH |
518 | do_keep = 0; |
519 | else | |
520 | do_keep = 1; | |
521 | } | |
522 | ||
523 | if (do_keep) { | |
524 | *av++ = "index-pack"; | |
525 | *av++ = "--stdin"; | |
83a5ad61 | 526 | if (!quiet && !no_progress) |
9e10fd1a JH |
527 | *av++ = "-v"; |
528 | if (use_thin_pack) | |
529 | *av++ = "--fix-thin"; | |
af7cf268 | 530 | if (keep_pack > 1 || unpack_limit) { |
9e10fd1a JH |
531 | int s = sprintf(keep_arg, |
532 | "--keep=fetch-pack %d on ", getpid()); | |
533 | if (gethostname(keep_arg + s, sizeof(keep_arg) - s)) | |
534 | strcpy(keep_arg + s, "localhost"); | |
535 | *av++ = keep_arg; | |
536 | } | |
537 | } | |
538 | else { | |
539 | *av++ = "unpack-objects"; | |
540 | if (quiet) | |
541 | *av++ = "-q"; | |
542 | } | |
543 | if (*hdr_arg) | |
544 | *av++ = hdr_arg; | |
545 | *av++ = NULL; | |
546 | ||
da093d37 NP |
547 | pid = fork(); |
548 | if (pid < 0) | |
549 | die("fetch-pack: unable to fork off %s", argv[0]); | |
550 | if (!pid) { | |
551 | dup2(fd[0], 0); | |
552 | close(fd[0]); | |
553 | close(fd[1]); | |
554 | execv_git_cmd(argv); | |
555 | die("%s exec failed", argv[0]); | |
556 | } | |
557 | close(fd[0]); | |
558 | close(fd[1]); | |
559 | while (waitpid(pid, &status, 0) < 0) { | |
560 | if (errno != EINTR) | |
561 | die("waiting for %s: %s", argv[0], strerror(errno)); | |
562 | } | |
563 | if (WIFEXITED(status)) { | |
564 | int code = WEXITSTATUS(status); | |
565 | if (code) | |
566 | die("%s died with error code %d", argv[0], code); | |
567 | return 0; | |
568 | } | |
569 | if (WIFSIGNALED(status)) { | |
570 | int sig = WTERMSIG(status); | |
571 | die("%s died of signal %d", argv[0], sig); | |
572 | } | |
573 | die("%s died of unnatural causes %d", argv[0], status); | |
574 | } | |
575 | ||
def88e9a LT |
576 | static int fetch_pack(int fd[2], int nr_match, char **match) |
577 | { | |
d1c133f5 LT |
578 | struct ref *ref; |
579 | unsigned char sha1[20]; | |
def88e9a | 580 | |
1baaae5e | 581 | get_remote_heads(fd[0], &ref, 0, NULL, 0); |
ed09aef0 JS |
582 | if (is_repository_shallow() && !server_supports("shallow")) |
583 | die("Server does not support shallow clients"); | |
c4c86f07 JS |
584 | if (server_supports("multi_ack")) { |
585 | if (verbose) | |
586 | fprintf(stderr, "Server supports multi_ack\n"); | |
587 | multi_ack = 1; | |
588 | } | |
d47f3db7 JH |
589 | if (server_supports("side-band-64k")) { |
590 | if (verbose) | |
591 | fprintf(stderr, "Server supports side-band-64k\n"); | |
592 | use_sideband = 2; | |
593 | } | |
594 | else if (server_supports("side-band")) { | |
583b7ea3 JH |
595 | if (verbose) |
596 | fprintf(stderr, "Server supports side-band\n"); | |
597 | use_sideband = 1; | |
598 | } | |
d1c133f5 LT |
599 | if (!ref) { |
600 | packet_flush(fd[1]); | |
601 | die("no matching remote head"); | |
602 | } | |
1baaae5e | 603 | if (everything_local(&ref, nr_match, match)) { |
2759cbc7 LT |
604 | packet_flush(fd[1]); |
605 | goto all_done; | |
606 | } | |
33b83034 | 607 | if (find_common(fd, sha1, ref) < 0) |
da093d37 | 608 | if (keep_pack != 1) |
dfeff66e JH |
609 | /* When cloning, it is not unusual to have |
610 | * no common commit. | |
611 | */ | |
612 | fprintf(stderr, "warning: no common commits\n"); | |
ad897215 | 613 | |
9e10fd1a | 614 | if (get_pack(fd)) |
ad897215 JH |
615 | die("git-fetch-pack: fetch failed."); |
616 | ||
617 | all_done: | |
618 | while (ref) { | |
619 | printf("%s %s\n", | |
620 | sha1_to_hex(ref->old_sha1), ref->name); | |
621 | ref = ref->next; | |
75bfc6c2 | 622 | } |
ad897215 | 623 | return 0; |
def88e9a LT |
624 | } |
625 | ||
310b86d4 JH |
626 | static int remove_duplicates(int nr_heads, char **heads) |
627 | { | |
628 | int src, dst; | |
629 | ||
630 | for (src = dst = 0; src < nr_heads; src++) { | |
631 | /* If heads[src] is different from any of | |
632 | * heads[0..dst], push it in. | |
633 | */ | |
634 | int i; | |
635 | for (i = 0; i < dst; i++) { | |
636 | if (!strcmp(heads[i], heads[src])) | |
637 | break; | |
638 | } | |
639 | if (i < dst) | |
640 | continue; | |
641 | if (src != dst) | |
642 | heads[dst] = heads[src]; | |
643 | dst++; | |
644 | } | |
645 | heads[dst] = 0; | |
646 | return dst; | |
647 | } | |
648 | ||
af7cf268 JH |
649 | static int fetch_pack_config(const char *var, const char *value) |
650 | { | |
651 | if (strcmp(var, "fetch.unpacklimit") == 0) { | |
e28714c5 JH |
652 | fetch_unpack_limit = git_config_int(var, value); |
653 | return 0; | |
654 | } | |
655 | ||
656 | if (strcmp(var, "transfer.unpacklimit") == 0) { | |
657 | transfer_unpack_limit = git_config_int(var, value); | |
af7cf268 JH |
658 | return 0; |
659 | } | |
660 | ||
661 | return git_default_config(var, value); | |
662 | } | |
663 | ||
54b9e022 JH |
664 | static struct lock_file lock; |
665 | ||
def88e9a LT |
666 | int main(int argc, char **argv) |
667 | { | |
668 | int i, ret, nr_heads; | |
669 | char *dest = NULL, **heads; | |
670 | int fd[2]; | |
671 | pid_t pid; | |
016e6ccb | 672 | struct stat st; |
def88e9a | 673 | |
5a327713 | 674 | setup_git_directory(); |
af7cf268 | 675 | git_config(fetch_pack_config); |
5a327713 | 676 | |
e28714c5 JH |
677 | if (0 <= transfer_unpack_limit) |
678 | unpack_limit = transfer_unpack_limit; | |
679 | else if (0 <= fetch_unpack_limit) | |
680 | unpack_limit = fetch_unpack_limit; | |
681 | ||
def88e9a LT |
682 | nr_heads = 0; |
683 | heads = NULL; | |
684 | for (i = 1; i < argc; i++) { | |
685 | char *arg = argv[i]; | |
686 | ||
687 | if (*arg == '-') { | |
599065a3 | 688 | if (!prefixcmp(arg, "--upload-pack=")) { |
27dca07f UKK |
689 | uploadpack = arg + 14; |
690 | continue; | |
691 | } | |
599065a3 | 692 | if (!prefixcmp(arg, "--exec=")) { |
27dca07f | 693 | uploadpack = arg + 7; |
8b3d9dc0 JH |
694 | continue; |
695 | } | |
2247efb4 | 696 | if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) { |
33b83034 JH |
697 | quiet = 1; |
698 | continue; | |
699 | } | |
2247efb4 | 700 | if (!strcmp("--keep", arg) || !strcmp("-k", arg)) { |
da093d37 | 701 | keep_pack++; |
af7cf268 | 702 | unpack_limit = 0; |
9e10fd1a JH |
703 | continue; |
704 | } | |
b19696c2 JH |
705 | if (!strcmp("--thin", arg)) { |
706 | use_thin_pack = 1; | |
707 | continue; | |
708 | } | |
dfeff66e JH |
709 | if (!strcmp("--all", arg)) { |
710 | fetch_all = 1; | |
711 | continue; | |
712 | } | |
33b83034 JH |
713 | if (!strcmp("-v", arg)) { |
714 | verbose = 1; | |
715 | continue; | |
716 | } | |
599065a3 | 717 | if (!prefixcmp(arg, "--depth=")) { |
016e6ccb JS |
718 | depth = strtol(arg + 8, NULL, 0); |
719 | if (stat(git_path("shallow"), &st)) | |
720 | st.st_mtime = 0; | |
721 | continue; | |
722 | } | |
83a5ad61 JS |
723 | if (!strcmp("--no-progress", arg)) { |
724 | no_progress = 1; | |
725 | continue; | |
726 | } | |
def88e9a LT |
727 | usage(fetch_pack_usage); |
728 | } | |
729 | dest = arg; | |
730 | heads = argv + i + 1; | |
731 | nr_heads = argc - i - 1; | |
732 | break; | |
733 | } | |
734 | if (!dest) | |
735 | usage(fetch_pack_usage); | |
27dca07f | 736 | pid = git_connect(fd, dest, uploadpack); |
def88e9a LT |
737 | if (pid < 0) |
738 | return 1; | |
310b86d4 JH |
739 | if (heads && nr_heads) |
740 | nr_heads = remove_duplicates(nr_heads, heads); | |
def88e9a LT |
741 | ret = fetch_pack(fd, nr_heads, heads); |
742 | close(fd[0]); | |
743 | close(fd[1]); | |
8a5dbef8 | 744 | ret |= finish_connect(pid); |
9e5d2b40 JH |
745 | |
746 | if (!ret && nr_heads) { | |
747 | /* If the heads to pull were given, we should have | |
748 | * consumed all of them by matching the remote. | |
749 | * Otherwise, 'git-fetch remote no-such-ref' would | |
750 | * silently succeed without issuing an error. | |
751 | */ | |
752 | for (i = 0; i < nr_heads; i++) | |
753 | if (heads[i] && heads[i][0]) { | |
754 | error("no such remote ref %s", heads[i]); | |
755 | ret = 1; | |
756 | } | |
757 | } | |
758 | ||
016e6ccb JS |
759 | if (!ret && depth > 0) { |
760 | struct cache_time mtime; | |
761 | char *shallow = git_path("shallow"); | |
762 | int fd; | |
763 | ||
764 | mtime.sec = st.st_mtime; | |
765 | #ifdef USE_NSEC | |
766 | mtime.usec = st.st_mtim.usec; | |
767 | #endif | |
768 | if (stat(shallow, &st)) { | |
769 | if (mtime.sec) | |
770 | die("shallow file was removed during fetch"); | |
771 | } else if (st.st_mtime != mtime.sec | |
772 | #ifdef USE_NSEC | |
773 | || st.st_mtim.usec != mtime.usec | |
774 | #endif | |
775 | ) | |
776 | die("shallow file was changed during fetch"); | |
777 | ||
778 | fd = hold_lock_file_for_update(&lock, shallow, 1); | |
779 | if (!write_shallow_commits(fd, 0)) { | |
d6491e3a | 780 | unlink(shallow); |
016e6ccb JS |
781 | rollback_lock_file(&lock); |
782 | } else { | |
783 | close(fd); | |
784 | commit_lock_file(&lock); | |
785 | } | |
786 | } | |
787 | ||
8a5dbef8 | 788 | return !!ret; |
def88e9a | 789 | } |