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chromium / external / github.com / git / git / refs/tags/v2.4.0 / . / bundle.c
blob: f732c920aadd7515d56f7d344f771fb9d362f042 [file] [log] [blame]
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]1#include "cache.h"
Michael Haggerty697cc8e2014-10-01 10:28:42[diff] [blame]2#include "lockfile.h"
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]3#include "bundle.h"
4#include "object.h"
5#include "commit.h"
6#include "diff.h"
7#include "revision.h"
8#include "list-objects.h"
9#include "run-command.h"
Junio C Hamanofa303832007-11-23 00:51:18[diff] [blame]10#include "refs.h"
Junio C Hamano1e2371e2013-11-12 21:32:11[diff] [blame]11#include "argv-array.h"
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]12
13static const char bundle_signature[] = "# v2 git bundle\n";
14
15static void add_to_ref_list(const unsigned char *sha1, const char *name,
16 struct ref_list *list)
17{
Dmitry S. Dolzhenko5cbbe132014-03-03 22:31:50[diff] [blame]18 ALLOC_GROW(list->list, list->nr + 1, list->alloc);
Sun He50546b12014-03-03 09:39:59[diff] [blame]19 hashcpy(list->list[list->nr].sha1, sha1);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]20 list->list[list->nr].name = xstrdup(name);
21 list->nr++;
22}
23
Junio C Hamano2727b712011-10-13 22:19:31[diff] [blame]24static int parse_bundle_header(int fd, struct bundle_header *header,
25 const char *report_path)
Junio C Hamanof3fa1832007-11-08 23:35:32[diff] [blame]26{
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]27 struct strbuf buf = STRBUF_INIT;
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]28 int status = 0;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]29
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]30 /* The bundle header begins with the signature */
Thomas Rast5e8617f2012-02-22 19:34:22[diff] [blame]31 if (strbuf_getwholeline_fd(&buf, fd, '\n') ||
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]32 strcmp(buf.buf, bundle_signature)) {
Junio C Hamano2727b712011-10-13 22:19:31[diff] [blame]33 if (report_path)
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]34 error(_("'%s' does not look like a v2 bundle file"),
Junio C Hamano2727b712011-10-13 22:19:31[diff] [blame]35 report_path);
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]36 status = -1;
37 goto abort;
38 }
39
40 /* The bundle header ends with an empty line */
Thomas Rast5e8617f2012-02-22 19:34:22[diff] [blame]41 while (!strbuf_getwholeline_fd(&buf, fd, '\n') &&
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]42 buf.len && buf.buf[0] != '\n') {
43 unsigned char sha1[20];
44 int is_prereq = 0;
45
46 if (*buf.buf == '-') {
47 is_prereq = 1;
48 strbuf_remove(&buf, 0, 1);
49 }
50 strbuf_rtrim(&buf);
51
52 /*
53 * Tip lines have object name, SP, and refname.
54 * Prerequisites have object name that is optionally
55 * followed by SP and subject line.
56 */
57 if (get_sha1_hex(buf.buf, sha1) ||
Lukas Fleischer5446e332013-04-07 11:53:15[diff] [blame]58 (buf.len > 40 && !isspace(buf.buf[40])) ||
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]59 (!is_prereq && buf.len <= 40)) {
Junio C Hamano2727b712011-10-13 22:19:31[diff] [blame]60 if (report_path)
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]61 error(_("unrecognized header: %s%s (%d)"),
Junio C Hamano2727b712011-10-13 22:19:31[diff] [blame]62 (is_prereq ? "-" : ""), buf.buf, (int)buf.len);
Junio C Hamanoe9ee84c2011-10-13 22:12:02[diff] [blame]63 status = -1;
64 break;
65 } else {
66 if (is_prereq)
67 add_to_ref_list(sha1, "", &header->prerequisites);
68 else
69 add_to_ref_list(sha1, buf.buf + 41, &header->references);
70 }
71 }
72
73 abort:
74 if (status) {
75 close(fd);
76 fd = -1;
77 }
78 strbuf_release(&buf);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]79 return fd;
80}
81
Junio C Hamanof3fa1832007-11-08 23:35:32[diff] [blame]82int read_bundle_header(const char *path, struct bundle_header *header)
83{
Junio C Hamano2727b712011-10-13 22:19:31[diff] [blame]84 int fd = open(path, O_RDONLY);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]85
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]86 if (fd < 0)
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]87 return error(_("could not open '%s'"), path);
Junio C Hamano2727b712011-10-13 22:19:31[diff] [blame]88 return parse_bundle_header(fd, header, path);
89}
90
91int is_bundle(const char *path, int quiet)
92{
93 struct bundle_header header;
94 int fd = open(path, O_RDONLY);
95
96 if (fd < 0)
97 return 0;
98 memset(&header, 0, sizeof(header));
99 fd = parse_bundle_header(fd, &header, quiet ? NULL : path);
100 if (fd >= 0)
101 close(fd);
102 return (fd >= 0);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]103}
104
105static int list_refs(struct ref_list *r, int argc, const char **argv)
106{
107 int i;
108
109 for (i = 0; i < r->nr; i++) {
110 if (argc > 1) {
111 int j;
112 for (j = 1; j < argc; j++)
113 if (!strcmp(r->list[i].name, argv[j]))
114 break;
115 if (j == argc)
116 continue;
117 }
118 printf("%s %s\n", sha1_to_hex(r->list[i].sha1),
119 r->list[i].name);
120 }
121 return 0;
122}
123
Nguyễn Thái Ngọc Duy208acbf2014-03-25 13:23:26[diff] [blame]124/* Remember to update object flag allocation in object.h */
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]125#define PREREQ_MARK (1u<<16)
126
127int verify_bundle(struct bundle_header *header, int verbose)
128{
129 /*
130 * Do fast check, then if any prereqs are missing then go line by line
131 * to be verbose about the errors
132 */
133 struct ref_list *p = &header->prerequisites;
134 struct rev_info revs;
Nguyễn Thái Ngọc Duya80aad72009-05-21 09:32:44[diff] [blame]135 const char *argv[] = {NULL, "--all", NULL};
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]136 struct object_array refs;
137 struct commit *commit;
138 int i, ret = 0, req_nr;
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]139 const char *message = _("Repository lacks these prerequisite commits:");
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]140
141 init_revisions(&revs, NULL);
142 for (i = 0; i < p->nr; i++) {
143 struct ref_list_entry *e = p->list + i;
144 struct object *o = parse_object(e->sha1);
145 if (o) {
146 o->flags |= PREREQ_MARK;
147 add_pending_object(&revs, o, e->name);
148 continue;
149 }
150 if (++ret == 1)
Daniel Lowe9db56f72008-11-10 21:07:52[diff] [blame]151 error("%s", message);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]152 error("%s %s", sha1_to_hex(e->sha1), e->name);
153 }
154 if (revs.pending.nr != p->nr)
155 return ret;
156 req_nr = revs.pending.nr;
157 setup_revisions(2, argv, &revs, NULL);
158
René Scharfe5be78592011-10-01 16:02:36[diff] [blame]159 refs = revs.pending;
160 revs.leak_pending = 1;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]161
Martin Koegler3d51e1b2008-02-18 07:31:56[diff] [blame]162 if (prepare_revision_walk(&revs))
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]163 die(_("revision walk setup failed"));
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]164
165 i = req_nr;
166 while (i && (commit = get_revision(&revs)))
167 if (commit->object.flags & PREREQ_MARK)
168 i--;
169
170 for (i = 0; i < req_nr; i++)
171 if (!(refs.objects[i].item->flags & SHOWN)) {
172 if (++ret == 1)
Daniel Lowe9db56f72008-11-10 21:07:52[diff] [blame]173 error("%s", message);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]174 error("%s %s", sha1_to_hex(refs.objects[i].item->sha1),
175 refs.objects[i].name);
176 }
177
René Scharfe86a0a402011-10-01 16:16:08[diff] [blame]178 clear_commit_marks_for_object_array(&refs, ALL_REV_FLAGS);
René Scharfe5be78592011-10-01 16:02:36[diff] [blame]179 free(refs.objects);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]180
181 if (verbose) {
182 struct ref_list *r;
183
184 r = &header->references;
Lukas Fleischera02ffe02013-03-08 18:01:26[diff] [blame]185 printf_ln(Q_("The bundle contains this ref:",
186 "The bundle contains these %d refs:",
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]187 r->nr),
188 r->nr);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]189 list_refs(r, 0, NULL);
Lukas Fleischer71ba6b12013-03-07 00:56:35[diff] [blame]190 r = &header->prerequisites;
Junio C Hamano8c3710f2012-06-04 18:51:13[diff] [blame]191 if (!r->nr) {
192 printf_ln(_("The bundle records a complete history."));
193 } else {
Lukas Fleischera02ffe02013-03-08 18:01:26[diff] [blame]194 printf_ln(Q_("The bundle requires this ref:",
195 "The bundle requires these %d refs:",
Junio C Hamano8c3710f2012-06-04 18:51:13[diff] [blame]196 r->nr),
197 r->nr);
198 list_refs(r, 0, NULL);
199 }
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]200 }
201 return ret;
202}
203
204int list_bundle_refs(struct bundle_header *header, int argc, const char **argv)
205{
206 return list_refs(&header->references, argc, argv);
207}
208
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]209static int is_tag_in_date_range(struct object *tag, struct rev_info *revs)
210{
211 unsigned long size;
212 enum object_type type;
René Scharfe64045942014-10-03 22:40:24[diff] [blame]213 char *buf = NULL, *line, *lineend;
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]214 unsigned long date;
René Scharfe64045942014-10-03 22:40:24[diff] [blame]215 int result = 1;
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]216
217 if (revs->max_age == -1 && revs->min_age == -1)
René Scharfe64045942014-10-03 22:40:24[diff] [blame]218 goto out;
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]219
220 buf = read_sha1_file(tag->sha1, &type, &size);
221 if (!buf)
René Scharfe64045942014-10-03 22:40:24[diff] [blame]222 goto out;
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]223 line = memmem(buf, size, "\ntagger ", 8);
224 if (!line++)
René Scharfe64045942014-10-03 22:40:24[diff] [blame]225 goto out;
Lukas Fleischer2c8544a2014-08-02 08:39:06[diff] [blame]226 lineend = memchr(line, '\n', buf + size - line);
227 line = memchr(line, '>', lineend ? lineend - line : buf + size - line);
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]228 if (!line++)
René Scharfe64045942014-10-03 22:40:24[diff] [blame]229 goto out;
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]230 date = strtoul(line, NULL, 10);
René Scharfe64045942014-10-03 22:40:24[diff] [blame]231 result = (revs->max_age == -1 || revs->max_age < date) &&
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]232 (revs->min_age == -1 || revs->min_age > date);
René Scharfe64045942014-10-03 22:40:24[diff] [blame]233out:
234 free(buf);
235 return result;
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]236}
237
Junio C Hamano5e626b92014-10-30 17:45:41[diff] [blame]238static int write_pack_data(int bundle_fd, struct lock_file *lock, struct rev_info *revs)
239{
240 struct child_process pack_objects = CHILD_PROCESS_INIT;
241 int i;
242
243 argv_array_pushl(&pack_objects.args,
244 "pack-objects", "--all-progress-implied",
245 "--stdout", "--thin", "--delta-base-offset",
246 NULL);
247 pack_objects.in = -1;
248 pack_objects.out = bundle_fd;
249 pack_objects.git_cmd = 1;
250 if (start_command(&pack_objects))
251 return error(_("Could not spawn pack-objects"));
252
253 /*
254 * start_command closed bundle_fd if it was > 1
255 * so set the lock fd to -1 so commit_lock_file()
256 * won't fail trying to close it.
257 */
258 lock->fd = -1;
259
260 for (i = 0; i < revs->pending.nr; i++) {
261 struct object *object = revs->pending.objects[i].item;
262 if (object->flags & UNINTERESTING)
263 write_or_die(pack_objects.in, "^", 1);
264 write_or_die(pack_objects.in, sha1_to_hex(object->sha1), 40);
265 write_or_die(pack_objects.in, "\n", 1);
266 }
267 close(pack_objects.in);
268 if (finish_command(&pack_objects))
269 return error(_("pack-objects died"));
270 return 0;
271}
272
Junio C Hamanoe8eb2512014-10-30 18:01:37[diff] [blame]273static int compute_and_write_prerequisites(int bundle_fd,
274 struct rev_info *revs,
275 int argc, const char **argv)
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]276{
René Scharfed3180272014-08-19 19:09:35[diff] [blame]277 struct child_process rls = CHILD_PROCESS_INIT;
Junio C Hamanoe8eb2512014-10-30 18:01:37[diff] [blame]278 struct strbuf buf = STRBUF_INIT;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]279 FILE *rls_fout;
Junio C Hamanoe8eb2512014-10-30 18:01:37[diff] [blame]280 int i;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]281
René Scharfe92859f32014-07-17 23:27:41[diff] [blame]282 argv_array_pushl(&rls.args,
Junio C Hamano1e2371e2013-11-12 21:32:11[diff] [blame]283 "rev-list", "--boundary", "--pretty=oneline",
284 NULL);
285 for (i = 1; i < argc; i++)
René Scharfe92859f32014-07-17 23:27:41[diff] [blame]286 argv_array_push(&rls.args, argv[i]);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]287 rls.out = -1;
288 rls.git_cmd = 1;
289 if (start_command(&rls))
290 return -1;
Jim Meyering41698372009-09-12 08:43:27[diff] [blame]291 rls_fout = xfdopen(rls.out, "r");
Thomas Rastbc2fed42012-02-22 19:34:23[diff] [blame]292 while (strbuf_getwholeline(&buf, rls_fout, '\n') != EOF) {
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]293 unsigned char sha1[20];
Thomas Rastbc2fed42012-02-22 19:34:23[diff] [blame]294 if (buf.len > 0 && buf.buf[0] == '-') {
295 write_or_die(bundle_fd, buf.buf, buf.len);
296 if (!get_sha1_hex(buf.buf + 1, sha1)) {
Jeff King75a95492013-03-17 08:22:36[diff] [blame]297 struct object *object = parse_object_or_die(sha1, buf.buf);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]298 object->flags |= UNINTERESTING;
Junio C Hamanoe8eb2512014-10-30 18:01:37[diff] [blame]299 add_pending_object(revs, object, buf.buf);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]300 }
Thomas Rastbc2fed42012-02-22 19:34:23[diff] [blame]301 } else if (!get_sha1_hex(buf.buf, sha1)) {
Jeff King75a95492013-03-17 08:22:36[diff] [blame]302 struct object *object = parse_object_or_die(sha1, buf.buf);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]303 object->flags |= SHOWN;
304 }
305 }
Thomas Rastbc2fed42012-02-22 19:34:23[diff] [blame]306 strbuf_release(&buf);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]307 fclose(rls_fout);
308 if (finish_command(&rls))
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]309 return error(_("rev-list died"));
Junio C Hamanoe8eb2512014-10-30 18:01:37[diff] [blame]310 return 0;
311}
312
Jeff Kingd9362ef2014-10-30 21:35:24[diff] [blame]313/*
314 * Write out bundle refs based on the tips already
315 * parsed into revs.pending. As a side effect, may
316 * manipulate revs.pending to include additional
317 * necessary objects (like tags).
318 *
319 * Returns the number of refs written, or negative
320 * on error.
321 */
322static int write_bundle_refs(int bundle_fd, struct rev_info *revs)
Junio C Hamanoe8eb2512014-10-30 18:01:37[diff] [blame]323{
Jeff Kingd9362ef2014-10-30 21:35:24[diff] [blame]324 int i;
325 int ref_count = 0;
Junio C Hamanoe8eb2512014-10-30 18:01:37[diff] [blame]326
Jeff Kingd9362ef2014-10-30 21:35:24[diff] [blame]327 for (i = 0; i < revs->pending.nr; i++) {
328 struct object_array_entry *e = revs->pending.objects + i;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]329 unsigned char sha1[20];
330 char *ref;
Junio C Hamanofa303832007-11-23 00:51:18[diff] [blame]331 const char *display_ref;
332 int flag;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]333
334 if (e->item->flags & UNINTERESTING)
335 continue;
336 if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
Stefan Bellerc8a571d2015-03-10 23:51:48[diff] [blame]337 goto skip_write_ref;
Ronnie Sahlberg7695d112014-07-15 19:59:36[diff] [blame]338 if (read_ref_full(e->name, RESOLVE_REF_READING, sha1, &flag))
Junio C Hamanofa303832007-11-23 00:51:18[diff] [blame]339 flag = 0;
340 display_ref = (flag & REF_ISSYMREF) ? e->name : ref;
341
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]342 if (e->item->type == OBJ_TAG &&
Jeff Kingd9362ef2014-10-30 21:35:24[diff] [blame]343 !is_tag_in_date_range(e->item, revs)) {
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]344 e->item->flags |= UNINTERESTING;
Stefan Bellerc8a571d2015-03-10 23:51:48[diff] [blame]345 goto skip_write_ref;
Johannes Schindelinc9a42c42009-01-02 18:08:46[diff] [blame]346 }
347
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]348 /*
349 * Make sure the refs we wrote out is correct; --max-count and
350 * other limiting options could have prevented all the tips
351 * from getting output.
352 *
353 * Non commit objects such as tags and blobs do not have
354 * this issue as they are not affected by those extra
355 * constraints.
356 */
357 if (!(e->item->flags & SHOWN) && e->item->type == OBJ_COMMIT) {
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]358 warning(_("ref '%s' is excluded by the rev-list options"),
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]359 e->name);
Stefan Bellerc8a571d2015-03-10 23:51:48[diff] [blame]360 goto skip_write_ref;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]361 }
362 /*
363 * If you run "git bundle create bndl v1.0..v2.0", the
364 * name of the positive ref is "v2.0" but that is the
365 * commit that is referenced by the tag, and not the tag
366 * itself.
367 */
368 if (hashcmp(sha1, e->item->sha1)) {
369 /*
370 * Is this the positive end of a range expressed
371 * in terms of a tag (e.g. v2.0 from the range
372 * "v1.0..v2.0")?
373 */
374 struct commit *one = lookup_commit_reference(sha1);
375 struct object *obj;
376
377 if (e->item == &(one->object)) {
378 /*
379 * Need to include e->name as an
380 * independent ref to the pack-objects
381 * input, so that the tag is included
382 * in the output; otherwise we would
383 * end up triggering "empty bundle"
384 * error.
385 */
Jeff King75a95492013-03-17 08:22:36[diff] [blame]386 obj = parse_object_or_die(sha1, e->name);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]387 obj->flags |= SHOWN;
Jeff Kingd9362ef2014-10-30 21:35:24[diff] [blame]388 add_pending_object(revs, obj, e->name);
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]389 }
Stefan Bellerc8a571d2015-03-10 23:51:48[diff] [blame]390 goto skip_write_ref;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]391 }
392
393 ref_count++;
394 write_or_die(bundle_fd, sha1_to_hex(e->item->sha1), 40);
395 write_or_die(bundle_fd, " ", 1);
Junio C Hamanofa303832007-11-23 00:51:18[diff] [blame]396 write_or_die(bundle_fd, display_ref, strlen(display_ref));
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]397 write_or_die(bundle_fd, "\n", 1);
Stefan Bellerc8a571d2015-03-10 23:51:48[diff] [blame]398 skip_write_ref:
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]399 free(ref);
400 }
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]401
402 /* end header */
403 write_or_die(bundle_fd, "\n", 1);
Jeff Kingd9362ef2014-10-30 21:35:24[diff] [blame]404 return ref_count;
405}
406
407int create_bundle(struct bundle_header *header, const char *path,
408 int argc, const char **argv)
409{
410 static struct lock_file lock;
411 int bundle_fd = -1;
412 int bundle_to_stdout;
413 int ref_count = 0;
414 struct rev_info revs;
415
416 bundle_to_stdout = !strcmp(path, "-");
417 if (bundle_to_stdout)
418 bundle_fd = 1;
419 else
420 bundle_fd = hold_lock_file_for_update(&lock, path,
421 LOCK_DIE_ON_ERROR);
422
423 /* write signature */
424 write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
425
426 /* init revs to list objects for pack-objects later */
427 save_commit_buffer = 0;
428 init_revisions(&revs, NULL);
429
430 /* write prerequisites */
431 if (compute_and_write_prerequisites(bundle_fd, &revs, argc, argv))
432 return -1;
433
434 argc = setup_revisions(argc, argv, &revs, NULL);
435
436 if (argc > 1)
437 return error(_("unrecognized argument: %s"), argv[1]);
438
439 object_array_remove_duplicates(&revs.pending);
440
441 ref_count = write_bundle_refs(bundle_fd, &revs);
442 if (!ref_count)
443 die(_("Refusing to create empty bundle."));
444 else if (ref_count < 0)
445 return -1;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]446
447 /* write pack */
Junio C Hamano5e626b92014-10-30 17:45:41[diff] [blame]448 if (write_pack_data(bundle_fd, &lock, &revs))
449 return -1;
Brandon Casey4ed7cd32008-01-16 19:12:46[diff] [blame]450
Csaba Henk0f5cdf62010-08-27 20:31:47[diff] [blame]451 if (!bundle_to_stdout) {
452 if (commit_lock_file(&lock))
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]453 die_errno(_("cannot create '%s'"), path);
Csaba Henk0f5cdf62010-08-27 20:31:47[diff] [blame]454 }
Johannes Sixtc20181e2008-02-21 22:42:56[diff] [blame]455 return 0;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]456}
457
Junio C Hamanobe042af2011-09-18 23:52:32[diff] [blame]458int unbundle(struct bundle_header *header, int bundle_fd, int flags)
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]459{
460 const char *argv_index_pack[] = {"index-pack",
Junio C Hamanobe042af2011-09-18 23:52:32[diff] [blame]461 "--fix-thin", "--stdin", NULL, NULL};
René Scharfed3180272014-08-19 19:09:35[diff] [blame]462 struct child_process ip = CHILD_PROCESS_INIT;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]463
Junio C Hamanobe042af2011-09-18 23:52:32[diff] [blame]464 if (flags & BUNDLE_VERBOSE)
465 argv_index_pack[3] = "-v";
466
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]467 if (verify_bundle(header, 0))
468 return -1;
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]469 ip.argv = argv_index_pack;
470 ip.in = bundle_fd;
471 ip.no_stdout = 1;
472 ip.git_cmd = 1;
473 if (run_command(&ip))
Nguyễn Thái Ngọc Duy8a1e7ea2012-04-23 12:30:30[diff] [blame]474 return error(_("index-pack died"));
Johannes Schindelin30415d52007-09-11 03:03:15[diff] [blame]475 return 0;
476}