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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" |
2d4177c0 | 9 | #include "fetch-pack.h" |
def88e9a | 10 | |
ad897215 | 11 | static int keep_pack; |
e28714c5 JH |
12 | static int transfer_unpack_limit = -1; |
13 | static int fetch_unpack_limit = -1; | |
af7cf268 | 14 | static int unpack_limit = 100; |
8b3d9dc0 | 15 | static int quiet; |
33b83034 | 16 | static int verbose; |
dfeff66e | 17 | static int fetch_all; |
016e6ccb | 18 | static int depth; |
83a5ad61 | 19 | static int no_progress; |
33b83034 | 20 | static const char fetch_pack_usage[] = |
83a5ad61 | 21 | "git-fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]"; |
27dca07f | 22 | static const char *uploadpack = "git-upload-pack"; |
def88e9a | 23 | |
0a8944dd | 24 | #define COMPLETE (1U << 0) |
23d61f83 JS |
25 | #define COMMON (1U << 1) |
26 | #define COMMON_REF (1U << 2) | |
27 | #define SEEN (1U << 3) | |
28 | #define POPPED (1U << 4) | |
29 | ||
f061e5fd JH |
30 | /* |
31 | * After sending this many "have"s if we do not get any new ACK , we | |
32 | * give up traversing our history. | |
33 | */ | |
34 | #define MAX_IN_VAIN 256 | |
35 | ||
96f1e58f DR |
36 | static struct commit_list *rev_list; |
37 | static int non_common_revs, multi_ack, use_thin_pack, use_sideband; | |
23d61f83 JS |
38 | |
39 | static void rev_list_push(struct commit *commit, int mark) | |
40 | { | |
41 | if (!(commit->object.flags & mark)) { | |
42 | commit->object.flags |= mark; | |
43 | ||
44 | if (!(commit->object.parsed)) | |
45 | parse_commit(commit); | |
46 | ||
47 | insert_by_date(commit, &rev_list); | |
48 | ||
49 | if (!(commit->object.flags & COMMON)) | |
50 | non_common_revs++; | |
51 | } | |
52 | } | |
53 | ||
8da19775 | 54 | static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
23d61f83 | 55 | { |
9534f40b | 56 | struct object *o = deref_tag(parse_object(sha1), path, 0); |
23d61f83 | 57 | |
1974632c | 58 | if (o && o->type == OBJ_COMMIT) |
23d61f83 JS |
59 | rev_list_push((struct commit *)o, SEEN); |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | /* | |
65 | This function marks a rev and its ancestors as common. | |
66 | In some cases, it is desirable to mark only the ancestors (for example | |
67 | when only the server does not yet know that they are common). | |
68 | */ | |
69 | ||
70 | static void mark_common(struct commit *commit, | |
71 | int ancestors_only, int dont_parse) | |
72 | { | |
73 | if (commit != NULL && !(commit->object.flags & COMMON)) { | |
74 | struct object *o = (struct object *)commit; | |
75 | ||
76 | if (!ancestors_only) | |
77 | o->flags |= COMMON; | |
78 | ||
79 | if (!(o->flags & SEEN)) | |
80 | rev_list_push(commit, SEEN); | |
81 | else { | |
82 | struct commit_list *parents; | |
83 | ||
84 | if (!ancestors_only && !(o->flags & POPPED)) | |
85 | non_common_revs--; | |
86 | if (!o->parsed && !dont_parse) | |
87 | parse_commit(commit); | |
88 | ||
89 | for (parents = commit->parents; | |
90 | parents; | |
91 | parents = parents->next) | |
92 | mark_common(parents->item, 0, dont_parse); | |
93 | } | |
94 | } | |
95 | } | |
96 | ||
97 | /* | |
98 | Get the next rev to send, ignoring the common. | |
99 | */ | |
100 | ||
962554c6 | 101 | static const unsigned char* get_rev(void) |
23d61f83 JS |
102 | { |
103 | struct commit *commit = NULL; | |
104 | ||
105 | while (commit == NULL) { | |
106 | unsigned int mark; | |
107 | struct commit_list* parents; | |
108 | ||
109 | if (rev_list == NULL || non_common_revs == 0) | |
110 | return NULL; | |
111 | ||
112 | commit = rev_list->item; | |
113 | if (!(commit->object.parsed)) | |
114 | parse_commit(commit); | |
115 | commit->object.flags |= POPPED; | |
116 | if (!(commit->object.flags & COMMON)) | |
117 | non_common_revs--; | |
a6080a0a | 118 | |
23d61f83 JS |
119 | parents = commit->parents; |
120 | ||
121 | if (commit->object.flags & COMMON) { | |
122 | /* do not send "have", and ignore ancestors */ | |
123 | commit = NULL; | |
124 | mark = COMMON | SEEN; | |
125 | } else if (commit->object.flags & COMMON_REF) | |
126 | /* send "have", and ignore ancestors */ | |
127 | mark = COMMON | SEEN; | |
128 | else | |
129 | /* send "have", also for its ancestors */ | |
130 | mark = SEEN; | |
131 | ||
132 | while (parents) { | |
133 | if (!(parents->item->object.flags & SEEN)) | |
134 | rev_list_push(parents->item, mark); | |
135 | if (mark & COMMON) | |
136 | mark_common(parents->item, 1, 0); | |
137 | parents = parents->next; | |
138 | } | |
139 | ||
140 | rev_list = rev_list->next; | |
141 | } | |
142 | ||
143 | return commit->object.sha1; | |
144 | } | |
0a8944dd | 145 | |
33b83034 JH |
146 | static int find_common(int fd[2], unsigned char *result_sha1, |
147 | struct ref *refs) | |
def88e9a | 148 | { |
2759cbc7 | 149 | int fetching; |
23d61f83 JS |
150 | int count = 0, flushes = 0, retval; |
151 | const unsigned char *sha1; | |
f061e5fd JH |
152 | unsigned in_vain = 0; |
153 | int got_continue = 0; | |
23d61f83 | 154 | |
cb5d709f | 155 | for_each_ref(rev_list_insert_ref, NULL); |
def88e9a | 156 | |
2759cbc7 LT |
157 | fetching = 0; |
158 | for ( ; refs ; refs = refs->next) { | |
33b83034 | 159 | unsigned char *remote = refs->old_sha1; |
4dab94d5 | 160 | struct object *o; |
2759cbc7 | 161 | |
0a8944dd | 162 | /* |
4dab94d5 JH |
163 | * If that object is complete (i.e. it is an ancestor of a |
164 | * local ref), we tell them we have it but do not have to | |
165 | * tell them about its ancestors, which they already know | |
166 | * about. | |
f1f0a2be JH |
167 | * |
168 | * We use lookup_object here because we are only | |
169 | * interested in the case we *know* the object is | |
170 | * reachable and we have already scanned it. | |
4dab94d5 | 171 | */ |
f1f0a2be | 172 | if (((o = lookup_object(remote)) != NULL) && |
1baaae5e | 173 | (o->flags & COMPLETE)) { |
2759cbc7 | 174 | continue; |
0a8944dd | 175 | } |
23d61f83 | 176 | |
583b7ea3 | 177 | if (!fetching) |
b0e90897 | 178 | packet_write(fd[1], "want %s%s%s%s%s%s%s\n", |
583b7ea3 JH |
179 | sha1_to_hex(remote), |
180 | (multi_ack ? " multi_ack" : ""), | |
d47f3db7 JH |
181 | (use_sideband == 2 ? " side-band-64k" : ""), |
182 | (use_sideband == 1 ? " side-band" : ""), | |
e4fe4b8e | 183 | (use_thin_pack ? " thin-pack" : ""), |
b0e90897 | 184 | (no_progress ? " no-progress" : ""), |
e4fe4b8e | 185 | " ofs-delta"); |
583b7ea3 JH |
186 | else |
187 | packet_write(fd[1], "want %s\n", sha1_to_hex(remote)); | |
2759cbc7 | 188 | fetching++; |
33b83034 | 189 | } |
ed09aef0 JS |
190 | if (is_repository_shallow()) |
191 | write_shallow_commits(fd[1], 1); | |
016e6ccb JS |
192 | if (depth > 0) |
193 | packet_write(fd[1], "deepen %d", depth); | |
fb9040cc | 194 | packet_flush(fd[1]); |
2759cbc7 LT |
195 | if (!fetching) |
196 | return 1; | |
0a8944dd | 197 | |
cf01bd52 | 198 | if (depth > 0) { |
016e6ccb JS |
199 | char line[1024]; |
200 | unsigned char sha1[20]; | |
201 | int len; | |
202 | ||
203 | while ((len = packet_read_line(fd[0], line, sizeof(line)))) { | |
599065a3 | 204 | if (!prefixcmp(line, "shallow ")) { |
016e6ccb JS |
205 | if (get_sha1_hex(line + 8, sha1)) |
206 | die("invalid shallow line: %s", line); | |
016e6ccb | 207 | register_shallow(sha1); |
cf01bd52 JH |
208 | continue; |
209 | } | |
599065a3 | 210 | if (!prefixcmp(line, "unshallow ")) { |
f53514bc JS |
211 | if (get_sha1_hex(line + 10, sha1)) |
212 | die("invalid unshallow line: %s", line); | |
213 | if (!lookup_object(sha1)) | |
214 | die("object not found: %s", line); | |
215 | /* make sure that it is parsed as shallow */ | |
216 | parse_object(sha1); | |
217 | if (unregister_shallow(sha1)) | |
218 | die("no shallow found: %s", line); | |
cf01bd52 JH |
219 | continue; |
220 | } | |
221 | die("expected shallow/unshallow, got %s", line); | |
016e6ccb JS |
222 | } |
223 | } | |
224 | ||
23d61f83 | 225 | flushes = 0; |
75bfc6c2 | 226 | retval = -1; |
23d61f83 | 227 | while ((sha1 = get_rev())) { |
def88e9a | 228 | packet_write(fd[1], "have %s\n", sha1_to_hex(sha1)); |
33b83034 JH |
229 | if (verbose) |
230 | fprintf(stderr, "have %s\n", sha1_to_hex(sha1)); | |
f061e5fd | 231 | in_vain++; |
def88e9a | 232 | if (!(31 & ++count)) { |
c4c86f07 JS |
233 | int ack; |
234 | ||
def88e9a LT |
235 | packet_flush(fd[1]); |
236 | flushes++; | |
237 | ||
238 | /* | |
239 | * We keep one window "ahead" of the other side, and | |
240 | * will wait for an ACK only on the next one | |
241 | */ | |
242 | if (count == 32) | |
243 | continue; | |
c4c86f07 JS |
244 | |
245 | do { | |
246 | ack = get_ack(fd[0], result_sha1); | |
247 | if (verbose && ack) | |
248 | fprintf(stderr, "got ack %d %s\n", ack, | |
249 | sha1_to_hex(result_sha1)); | |
250 | if (ack == 1) { | |
251 | flushes = 0; | |
252 | multi_ack = 0; | |
253 | retval = 0; | |
254 | goto done; | |
255 | } else if (ack == 2) { | |
256 | struct commit *commit = | |
257 | lookup_commit(result_sha1); | |
258 | mark_common(commit, 0, 1); | |
259 | retval = 0; | |
f061e5fd JH |
260 | in_vain = 0; |
261 | got_continue = 1; | |
c4c86f07 JS |
262 | } |
263 | } while (ack); | |
def88e9a | 264 | flushes--; |
f061e5fd JH |
265 | if (got_continue && MAX_IN_VAIN < in_vain) { |
266 | if (verbose) | |
267 | fprintf(stderr, "giving up\n"); | |
268 | break; /* give up */ | |
269 | } | |
def88e9a LT |
270 | } |
271 | } | |
c4c86f07 | 272 | done: |
75bfc6c2 | 273 | packet_write(fd[1], "done\n"); |
33b83034 JH |
274 | if (verbose) |
275 | fprintf(stderr, "done\n"); | |
c4c86f07 JS |
276 | if (retval != 0) { |
277 | multi_ack = 0; | |
23d61f83 | 278 | flushes++; |
c4c86f07 JS |
279 | } |
280 | while (flushes || multi_ack) { | |
281 | int ack = get_ack(fd[0], result_sha1); | |
282 | if (ack) { | |
33b83034 | 283 | if (verbose) |
c4c86f07 JS |
284 | fprintf(stderr, "got ack (%d) %s\n", ack, |
285 | sha1_to_hex(result_sha1)); | |
286 | if (ack == 1) | |
287 | return 0; | |
288 | multi_ack = 1; | |
289 | continue; | |
33b83034 | 290 | } |
c4c86f07 | 291 | flushes--; |
def88e9a | 292 | } |
75bfc6c2 | 293 | return retval; |
def88e9a LT |
294 | } |
295 | ||
96f1e58f | 296 | static struct commit_list *complete; |
49bb805e | 297 | |
8da19775 | 298 | static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
49bb805e JH |
299 | { |
300 | struct object *o = parse_object(sha1); | |
301 | ||
1974632c | 302 | while (o && o->type == OBJ_TAG) { |
f1f0a2be JH |
303 | struct tag *t = (struct tag *) o; |
304 | if (!t->tagged) | |
305 | break; /* broken repository */ | |
49bb805e | 306 | o->flags |= COMPLETE; |
f1f0a2be | 307 | o = parse_object(t->tagged->sha1); |
49bb805e | 308 | } |
1974632c | 309 | if (o && o->type == OBJ_COMMIT) { |
49bb805e JH |
310 | struct commit *commit = (struct commit *)o; |
311 | commit->object.flags |= COMPLETE; | |
312 | insert_by_date(commit, &complete); | |
313 | } | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static void mark_recent_complete_commits(unsigned long cutoff) | |
318 | { | |
319 | while (complete && cutoff <= complete->item->date) { | |
320 | if (verbose) | |
321 | fprintf(stderr, "Marking %s as complete\n", | |
322 | sha1_to_hex(complete->item->object.sha1)); | |
323 | pop_most_recent_commit(&complete, COMPLETE); | |
324 | } | |
325 | } | |
326 | ||
1baaae5e JS |
327 | static void filter_refs(struct ref **refs, int nr_match, char **match) |
328 | { | |
9546010b JH |
329 | struct ref **return_refs; |
330 | struct ref *newlist = NULL; | |
331 | struct ref **newtail = &newlist; | |
332 | struct ref *ref, *next; | |
333 | struct ref *fastarray[32]; | |
334 | ||
335 | if (nr_match && !fetch_all) { | |
336 | if (ARRAY_SIZE(fastarray) < nr_match) | |
337 | return_refs = xcalloc(nr_match, sizeof(struct ref *)); | |
338 | else { | |
339 | return_refs = fastarray; | |
340 | memset(return_refs, 0, sizeof(struct ref *) * nr_match); | |
341 | } | |
342 | } | |
343 | else | |
344 | return_refs = NULL; | |
345 | ||
346 | for (ref = *refs; ref; ref = next) { | |
347 | next = ref->next; | |
348 | if (!memcmp(ref->name, "refs/", 5) && | |
349 | check_ref_format(ref->name + 5)) | |
350 | ; /* trash */ | |
4bcb310c | 351 | else if (fetch_all && |
cc44c765 | 352 | (!depth || prefixcmp(ref->name, "refs/tags/") )) { |
9546010b JH |
353 | *newtail = ref; |
354 | ref->next = NULL; | |
355 | newtail = &ref->next; | |
356 | continue; | |
357 | } | |
358 | else { | |
359 | int order = path_match(ref->name, nr_match, match); | |
360 | if (order) { | |
361 | return_refs[order-1] = ref; | |
362 | continue; /* we will link it later */ | |
363 | } | |
364 | } | |
365 | free(ref); | |
366 | } | |
367 | ||
368 | if (!fetch_all) { | |
369 | int i; | |
370 | for (i = 0; i < nr_match; i++) { | |
371 | ref = return_refs[i]; | |
372 | if (ref) { | |
373 | *newtail = ref; | |
374 | ref->next = NULL; | |
375 | newtail = &ref->next; | |
376 | } | |
377 | } | |
378 | if (return_refs != fastarray) | |
379 | free(return_refs); | |
1baaae5e | 380 | } |
9546010b | 381 | *refs = newlist; |
1baaae5e JS |
382 | } |
383 | ||
384 | static int everything_local(struct ref **refs, int nr_match, char **match) | |
2759cbc7 | 385 | { |
49bb805e | 386 | struct ref *ref; |
2759cbc7 | 387 | int retval; |
49bb805e JH |
388 | unsigned long cutoff = 0; |
389 | ||
390 | track_object_refs = 0; | |
391 | save_commit_buffer = 0; | |
392 | ||
1baaae5e | 393 | for (ref = *refs; ref; ref = ref->next) { |
49bb805e JH |
394 | struct object *o; |
395 | ||
396 | o = parse_object(ref->old_sha1); | |
397 | if (!o) | |
398 | continue; | |
399 | ||
400 | /* We already have it -- which may mean that we were | |
401 | * in sync with the other side at some time after | |
402 | * that (it is OK if we guess wrong here). | |
403 | */ | |
1974632c | 404 | if (o->type == OBJ_COMMIT) { |
49bb805e JH |
405 | struct commit *commit = (struct commit *)o; |
406 | if (!cutoff || cutoff < commit->date) | |
407 | cutoff = commit->date; | |
408 | } | |
409 | } | |
410 | ||
f53514bc JS |
411 | if (!depth) { |
412 | for_each_ref(mark_complete, NULL); | |
413 | if (cutoff) | |
414 | mark_recent_complete_commits(cutoff); | |
415 | } | |
2759cbc7 | 416 | |
1baaae5e JS |
417 | /* |
418 | * Mark all complete remote refs as common refs. | |
419 | * Don't mark them common yet; the server has to be told so first. | |
420 | */ | |
421 | for (ref = *refs; ref; ref = ref->next) { | |
9534f40b JH |
422 | struct object *o = deref_tag(lookup_object(ref->old_sha1), |
423 | NULL, 0); | |
1baaae5e | 424 | |
1974632c | 425 | if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE)) |
1baaae5e JS |
426 | continue; |
427 | ||
428 | if (!(o->flags & SEEN)) { | |
429 | rev_list_push((struct commit *)o, COMMON_REF | SEEN); | |
430 | ||
431 | mark_common((struct commit *)o, 1, 1); | |
432 | } | |
433 | } | |
434 | ||
435 | filter_refs(refs, nr_match, match); | |
436 | ||
437 | for (retval = 1, ref = *refs; ref ; ref = ref->next) { | |
438 | const unsigned char *remote = ref->old_sha1; | |
2759cbc7 | 439 | unsigned char local[20]; |
49bb805e | 440 | struct object *o; |
2759cbc7 | 441 | |
1baaae5e | 442 | o = lookup_object(remote); |
49bb805e | 443 | if (!o || !(o->flags & COMPLETE)) { |
2759cbc7 LT |
444 | retval = 0; |
445 | if (!verbose) | |
446 | continue; | |
447 | fprintf(stderr, | |
448 | "want %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 449 | ref->name); |
2759cbc7 LT |
450 | continue; |
451 | } | |
452 | ||
e702496e | 453 | hashcpy(ref->new_sha1, local); |
2759cbc7 LT |
454 | if (!verbose) |
455 | continue; | |
456 | fprintf(stderr, | |
457 | "already have %s (%s)\n", sha1_to_hex(remote), | |
1baaae5e | 458 | ref->name); |
2759cbc7 LT |
459 | } |
460 | return retval; | |
461 | } | |
462 | ||
da093d37 NP |
463 | static pid_t setup_sideband(int fd[2], int xd[2]) |
464 | { | |
465 | pid_t side_pid; | |
466 | ||
467 | if (!use_sideband) { | |
468 | fd[0] = xd[0]; | |
469 | fd[1] = xd[1]; | |
470 | return 0; | |
471 | } | |
472 | /* xd[] is talking with upload-pack; subprocess reads from | |
473 | * xd[0], spits out band#2 to stderr, and feeds us band#1 | |
474 | * through our fd[0]. | |
475 | */ | |
476 | if (pipe(fd) < 0) | |
477 | die("fetch-pack: unable to set up pipe"); | |
478 | side_pid = fork(); | |
479 | if (side_pid < 0) | |
480 | die("fetch-pack: unable to fork off sideband demultiplexer"); | |
481 | if (!side_pid) { | |
482 | /* subprocess */ | |
483 | close(fd[0]); | |
484 | if (xd[0] != xd[1]) | |
485 | close(xd[1]); | |
486 | if (recv_sideband("fetch-pack", xd[0], fd[1], 2)) | |
487 | exit(1); | |
488 | exit(0); | |
489 | } | |
490 | close(xd[0]); | |
491 | close(fd[1]); | |
492 | fd[1] = xd[1]; | |
493 | return side_pid; | |
494 | } | |
495 | ||
9e10fd1a | 496 | static int get_pack(int xd[2]) |
da093d37 NP |
497 | { |
498 | int status; | |
499 | pid_t pid, side_pid; | |
500 | int fd[2]; | |
9e10fd1a JH |
501 | const char *argv[20]; |
502 | char keep_arg[256]; | |
503 | char hdr_arg[256]; | |
504 | const char **av; | |
505 | int do_keep = keep_pack; | |
da093d37 NP |
506 | |
507 | side_pid = setup_sideband(fd, xd); | |
9e10fd1a JH |
508 | |
509 | av = argv; | |
510 | *hdr_arg = 0; | |
af7cf268 | 511 | if (unpack_limit) { |
9e10fd1a JH |
512 | struct pack_header header; |
513 | ||
514 | if (read_pack_header(fd[0], &header)) | |
515 | die("protocol error: bad pack header"); | |
516 | snprintf(hdr_arg, sizeof(hdr_arg), "--pack_header=%u,%u", | |
517 | ntohl(header.hdr_version), ntohl(header.hdr_entries)); | |
af7cf268 | 518 | if (ntohl(header.hdr_entries) < unpack_limit) |
9e10fd1a JH |
519 | do_keep = 0; |
520 | else | |
521 | do_keep = 1; | |
522 | } | |
523 | ||
524 | if (do_keep) { | |
525 | *av++ = "index-pack"; | |
526 | *av++ = "--stdin"; | |
83a5ad61 | 527 | if (!quiet && !no_progress) |
9e10fd1a JH |
528 | *av++ = "-v"; |
529 | if (use_thin_pack) | |
530 | *av++ = "--fix-thin"; | |
af7cf268 | 531 | if (keep_pack > 1 || unpack_limit) { |
9e10fd1a JH |
532 | int s = sprintf(keep_arg, |
533 | "--keep=fetch-pack %d on ", getpid()); | |
534 | if (gethostname(keep_arg + s, sizeof(keep_arg) - s)) | |
535 | strcpy(keep_arg + s, "localhost"); | |
536 | *av++ = keep_arg; | |
537 | } | |
538 | } | |
539 | else { | |
540 | *av++ = "unpack-objects"; | |
541 | if (quiet) | |
542 | *av++ = "-q"; | |
543 | } | |
544 | if (*hdr_arg) | |
545 | *av++ = hdr_arg; | |
546 | *av++ = NULL; | |
547 | ||
da093d37 NP |
548 | pid = fork(); |
549 | if (pid < 0) | |
550 | die("fetch-pack: unable to fork off %s", argv[0]); | |
551 | if (!pid) { | |
552 | dup2(fd[0], 0); | |
553 | close(fd[0]); | |
554 | close(fd[1]); | |
555 | execv_git_cmd(argv); | |
556 | die("%s exec failed", argv[0]); | |
557 | } | |
558 | close(fd[0]); | |
559 | close(fd[1]); | |
560 | while (waitpid(pid, &status, 0) < 0) { | |
561 | if (errno != EINTR) | |
562 | die("waiting for %s: %s", argv[0], strerror(errno)); | |
563 | } | |
564 | if (WIFEXITED(status)) { | |
565 | int code = WEXITSTATUS(status); | |
566 | if (code) | |
567 | die("%s died with error code %d", argv[0], code); | |
568 | return 0; | |
569 | } | |
570 | if (WIFSIGNALED(status)) { | |
571 | int sig = WTERMSIG(status); | |
572 | die("%s died of signal %d", argv[0], sig); | |
573 | } | |
574 | die("%s died of unnatural causes %d", argv[0], status); | |
575 | } | |
576 | ||
2d4177c0 | 577 | static struct ref *do_fetch_pack(int fd[2], int nr_match, char **match) |
def88e9a | 578 | { |
d1c133f5 LT |
579 | struct ref *ref; |
580 | unsigned char sha1[20]; | |
def88e9a | 581 | |
1baaae5e | 582 | get_remote_heads(fd[0], &ref, 0, NULL, 0); |
ed09aef0 JS |
583 | if (is_repository_shallow() && !server_supports("shallow")) |
584 | die("Server does not support shallow clients"); | |
c4c86f07 JS |
585 | if (server_supports("multi_ack")) { |
586 | if (verbose) | |
587 | fprintf(stderr, "Server supports multi_ack\n"); | |
588 | multi_ack = 1; | |
589 | } | |
d47f3db7 JH |
590 | if (server_supports("side-band-64k")) { |
591 | if (verbose) | |
592 | fprintf(stderr, "Server supports side-band-64k\n"); | |
593 | use_sideband = 2; | |
594 | } | |
595 | else if (server_supports("side-band")) { | |
583b7ea3 JH |
596 | if (verbose) |
597 | fprintf(stderr, "Server supports side-band\n"); | |
598 | use_sideband = 1; | |
599 | } | |
d1c133f5 LT |
600 | if (!ref) { |
601 | packet_flush(fd[1]); | |
602 | die("no matching remote head"); | |
603 | } | |
1baaae5e | 604 | if (everything_local(&ref, nr_match, match)) { |
2759cbc7 LT |
605 | packet_flush(fd[1]); |
606 | goto all_done; | |
607 | } | |
33b83034 | 608 | if (find_common(fd, sha1, ref) < 0) |
da093d37 | 609 | if (keep_pack != 1) |
dfeff66e JH |
610 | /* When cloning, it is not unusual to have |
611 | * no common commit. | |
612 | */ | |
613 | fprintf(stderr, "warning: no common commits\n"); | |
ad897215 | 614 | |
9e10fd1a | 615 | if (get_pack(fd)) |
ad897215 JH |
616 | die("git-fetch-pack: fetch failed."); |
617 | ||
618 | all_done: | |
2d4177c0 | 619 | return ref; |
def88e9a LT |
620 | } |
621 | ||
310b86d4 JH |
622 | static int remove_duplicates(int nr_heads, char **heads) |
623 | { | |
624 | int src, dst; | |
625 | ||
626 | for (src = dst = 0; src < nr_heads; src++) { | |
627 | /* If heads[src] is different from any of | |
628 | * heads[0..dst], push it in. | |
629 | */ | |
630 | int i; | |
631 | for (i = 0; i < dst; i++) { | |
632 | if (!strcmp(heads[i], heads[src])) | |
633 | break; | |
634 | } | |
635 | if (i < dst) | |
636 | continue; | |
637 | if (src != dst) | |
638 | heads[dst] = heads[src]; | |
639 | dst++; | |
640 | } | |
641 | heads[dst] = 0; | |
642 | return dst; | |
643 | } | |
644 | ||
af7cf268 JH |
645 | static int fetch_pack_config(const char *var, const char *value) |
646 | { | |
647 | if (strcmp(var, "fetch.unpacklimit") == 0) { | |
e28714c5 JH |
648 | fetch_unpack_limit = git_config_int(var, value); |
649 | return 0; | |
650 | } | |
651 | ||
652 | if (strcmp(var, "transfer.unpacklimit") == 0) { | |
653 | transfer_unpack_limit = git_config_int(var, value); | |
af7cf268 JH |
654 | return 0; |
655 | } | |
656 | ||
657 | return git_default_config(var, value); | |
658 | } | |
659 | ||
54b9e022 JH |
660 | static struct lock_file lock; |
661 | ||
2d4177c0 DB |
662 | void setup_fetch_pack(struct fetch_pack_args *args) |
663 | { | |
664 | uploadpack = args->uploadpack; | |
665 | quiet = args->quiet; | |
666 | keep_pack = args->keep_pack; | |
667 | if (args->unpacklimit >= 0) | |
668 | unpack_limit = args->unpacklimit; | |
669 | if (args->keep_pack) | |
670 | unpack_limit = 0; | |
671 | use_thin_pack = args->use_thin_pack; | |
672 | fetch_all = args->fetch_all; | |
673 | verbose = args->verbose; | |
674 | depth = args->depth; | |
675 | no_progress = args->no_progress; | |
676 | } | |
677 | ||
678 | int cmd_fetch_pack(int argc, const char **argv, const char *prefix) | |
def88e9a LT |
679 | { |
680 | int i, ret, nr_heads; | |
2d4177c0 | 681 | struct ref *ref; |
def88e9a | 682 | char *dest = NULL, **heads; |
def88e9a | 683 | |
af7cf268 | 684 | git_config(fetch_pack_config); |
5a327713 | 685 | |
e28714c5 JH |
686 | if (0 <= transfer_unpack_limit) |
687 | unpack_limit = transfer_unpack_limit; | |
688 | else if (0 <= fetch_unpack_limit) | |
689 | unpack_limit = fetch_unpack_limit; | |
690 | ||
def88e9a LT |
691 | nr_heads = 0; |
692 | heads = NULL; | |
693 | for (i = 1; i < argc; i++) { | |
2d4177c0 | 694 | const char *arg = argv[i]; |
def88e9a LT |
695 | |
696 | if (*arg == '-') { | |
599065a3 | 697 | if (!prefixcmp(arg, "--upload-pack=")) { |
27dca07f UKK |
698 | uploadpack = arg + 14; |
699 | continue; | |
700 | } | |
599065a3 | 701 | if (!prefixcmp(arg, "--exec=")) { |
27dca07f | 702 | uploadpack = arg + 7; |
8b3d9dc0 JH |
703 | continue; |
704 | } | |
2247efb4 | 705 | if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) { |
33b83034 JH |
706 | quiet = 1; |
707 | continue; | |
708 | } | |
2247efb4 | 709 | if (!strcmp("--keep", arg) || !strcmp("-k", arg)) { |
da093d37 | 710 | keep_pack++; |
af7cf268 | 711 | unpack_limit = 0; |
9e10fd1a JH |
712 | continue; |
713 | } | |
b19696c2 JH |
714 | if (!strcmp("--thin", arg)) { |
715 | use_thin_pack = 1; | |
716 | continue; | |
717 | } | |
dfeff66e JH |
718 | if (!strcmp("--all", arg)) { |
719 | fetch_all = 1; | |
720 | continue; | |
721 | } | |
33b83034 JH |
722 | if (!strcmp("-v", arg)) { |
723 | verbose = 1; | |
724 | continue; | |
725 | } | |
599065a3 | 726 | if (!prefixcmp(arg, "--depth=")) { |
016e6ccb | 727 | depth = strtol(arg + 8, NULL, 0); |
016e6ccb JS |
728 | continue; |
729 | } | |
83a5ad61 JS |
730 | if (!strcmp("--no-progress", arg)) { |
731 | no_progress = 1; | |
732 | continue; | |
733 | } | |
def88e9a LT |
734 | usage(fetch_pack_usage); |
735 | } | |
2d4177c0 DB |
736 | dest = (char *)arg; |
737 | heads = (char **)(argv + i + 1); | |
def88e9a LT |
738 | nr_heads = argc - i - 1; |
739 | break; | |
740 | } | |
741 | if (!dest) | |
742 | usage(fetch_pack_usage); | |
2d4177c0 DB |
743 | |
744 | ref = fetch_pack(dest, nr_heads, heads); | |
745 | ||
746 | ret = !ref; | |
747 | ||
748 | while (ref) { | |
749 | printf("%s %s\n", | |
750 | sha1_to_hex(ref->old_sha1), ref->name); | |
751 | ref = ref->next; | |
752 | } | |
753 | ||
754 | return ret; | |
755 | } | |
756 | ||
757 | struct ref *fetch_pack(const char *dest, int nr_heads, char **heads) | |
758 | { | |
759 | int i, ret; | |
760 | int fd[2]; | |
761 | pid_t pid; | |
762 | struct ref *ref; | |
763 | struct stat st; | |
764 | ||
765 | if (depth > 0) { | |
766 | if (stat(git_path("shallow"), &st)) | |
767 | st.st_mtime = 0; | |
768 | } | |
769 | ||
770 | printf("connect to %s\n", dest); | |
771 | ||
772 | pid = git_connect(fd, (char *)dest, uploadpack, | |
773 | verbose ? CONNECT_VERBOSE : 0); | |
def88e9a | 774 | if (pid < 0) |
2d4177c0 | 775 | return NULL; |
310b86d4 JH |
776 | if (heads && nr_heads) |
777 | nr_heads = remove_duplicates(nr_heads, heads); | |
2d4177c0 | 778 | ref = do_fetch_pack(fd, nr_heads, heads); |
def88e9a LT |
779 | close(fd[0]); |
780 | close(fd[1]); | |
2d4177c0 | 781 | ret = finish_connect(pid); |
9e5d2b40 JH |
782 | |
783 | if (!ret && nr_heads) { | |
784 | /* If the heads to pull were given, we should have | |
785 | * consumed all of them by matching the remote. | |
786 | * Otherwise, 'git-fetch remote no-such-ref' would | |
787 | * silently succeed without issuing an error. | |
788 | */ | |
789 | for (i = 0; i < nr_heads; i++) | |
790 | if (heads[i] && heads[i][0]) { | |
791 | error("no such remote ref %s", heads[i]); | |
792 | ret = 1; | |
793 | } | |
794 | } | |
795 | ||
016e6ccb JS |
796 | if (!ret && depth > 0) { |
797 | struct cache_time mtime; | |
798 | char *shallow = git_path("shallow"); | |
799 | int fd; | |
800 | ||
801 | mtime.sec = st.st_mtime; | |
802 | #ifdef USE_NSEC | |
803 | mtime.usec = st.st_mtim.usec; | |
804 | #endif | |
805 | if (stat(shallow, &st)) { | |
806 | if (mtime.sec) | |
807 | die("shallow file was removed during fetch"); | |
808 | } else if (st.st_mtime != mtime.sec | |
809 | #ifdef USE_NSEC | |
810 | || st.st_mtim.usec != mtime.usec | |
811 | #endif | |
812 | ) | |
813 | die("shallow file was changed during fetch"); | |
814 | ||
815 | fd = hold_lock_file_for_update(&lock, shallow, 1); | |
816 | if (!write_shallow_commits(fd, 0)) { | |
d6491e3a | 817 | unlink(shallow); |
016e6ccb JS |
818 | rollback_lock_file(&lock); |
819 | } else { | |
820 | close(fd); | |
821 | commit_lock_file(&lock); | |
822 | } | |
823 | } | |
824 | ||
2d4177c0 DB |
825 | if (ret) |
826 | ref = NULL; | |
827 | ||
828 | return ref; | |
def88e9a | 829 | } |