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Commit | Line | Data |
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2ad9d4cb | 1 | #include "builtin.h" |
9cf6d335 SV |
2 | #include "delta.h" |
3 | #include "pack.h" | |
4 | #include "csum-file.h" | |
8e440259 PE |
5 | #include "blob.h" |
6 | #include "commit.h" | |
7 | #include "tag.h" | |
8 | #include "tree.h" | |
96a02f8f | 9 | #include "progress.h" |
0153be05 | 10 | #include "fsck.h" |
2fb3f6db | 11 | #include "exec_cmd.h" |
4614043c | 12 | #include "streaming.h" |
b8a2486f | 13 | #include "thread-utils.h" |
9cf6d335 SV |
14 | |
15 | static const char index_pack_usage[] = | |
e337a04d | 16 | "git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])"; |
9cf6d335 | 17 | |
9cba13ca | 18 | struct object_entry { |
aa7e44bf | 19 | struct pack_idx_entry idx; |
2d477051 NP |
20 | unsigned long size; |
21 | unsigned int hdr_size; | |
9cf6d335 SV |
22 | enum object_type type; |
23 | enum object_type real_type; | |
38a45561 JH |
24 | unsigned delta_depth; |
25 | int base_object_no; | |
9cf6d335 SV |
26 | }; |
27 | ||
53dda6ff NP |
28 | union delta_base { |
29 | unsigned char sha1[20]; | |
d7dd0223 | 30 | off_t offset; |
53dda6ff NP |
31 | }; |
32 | ||
f41aebd4 | 33 | struct base_data { |
4a438cab SP |
34 | struct base_data *base; |
35 | struct base_data *child; | |
03993e13 | 36 | struct object_entry *obj; |
f41aebd4 SP |
37 | void *data; |
38 | unsigned long size; | |
2baad220 NTND |
39 | int ref_first, ref_last; |
40 | int ofs_first, ofs_last; | |
f41aebd4 SP |
41 | }; |
42 | ||
b8a2486f NTND |
43 | struct thread_local { |
44 | #ifndef NO_PTHREADS | |
45 | pthread_t thread; | |
46 | #endif | |
47 | struct base_data *base_cache; | |
48 | size_t base_cache_used; | |
39539495 | 49 | int pack_fd; |
b8a2486f NTND |
50 | }; |
51 | ||
3c552873 NP |
52 | /* |
53 | * Even if sizeof(union delta_base) == 24 on 64-bit archs, we really want | |
54 | * to memcmp() only the first 20 bytes. | |
55 | */ | |
56 | #define UNION_BASE_SZ 20 | |
57 | ||
0153be05 MK |
58 | #define FLAG_LINK (1u<<20) |
59 | #define FLAG_CHECKED (1u<<21) | |
60 | ||
9cba13ca | 61 | struct delta_entry { |
53dda6ff | 62 | union delta_base base; |
636171cb | 63 | int obj_no; |
9cf6d335 SV |
64 | }; |
65 | ||
9cf6d335 SV |
66 | static struct object_entry *objects; |
67 | static struct delta_entry *deltas; | |
b8a2486f | 68 | static struct thread_local nothread_data; |
9cf6d335 SV |
69 | static int nr_objects; |
70 | static int nr_deltas; | |
636171cb | 71 | static int nr_resolved_deltas; |
b8a2486f | 72 | static int nr_threads; |
9cf6d335 | 73 | |
e42797f5 | 74 | static int from_stdin; |
0153be05 | 75 | static int strict; |
c6807a40 | 76 | static int do_fsck_object; |
3c9af366 | 77 | static int verbose; |
3aba2fdd | 78 | static int show_stat; |
c6807a40 | 79 | static int check_self_contained_and_connected; |
3c9af366 | 80 | |
dc6a0757 | 81 | static struct progress *progress; |
e42797f5 | 82 | |
2d477051 NP |
83 | /* We always read in 4kB chunks. */ |
84 | static unsigned char input_buffer[4096]; | |
d7dd0223 NP |
85 | static unsigned int input_offset, input_len; |
86 | static off_t consumed_bytes; | |
d1a0ed18 | 87 | static unsigned deepest_delta; |
9126f009 | 88 | static git_SHA_CTX input_ctx; |
ee5743ce | 89 | static uint32_t input_crc32; |
39539495 NTND |
90 | static int input_fd, output_fd; |
91 | static const char *curr_pack; | |
2d477051 | 92 | |
b8a2486f NTND |
93 | #ifndef NO_PTHREADS |
94 | ||
95 | static struct thread_local *thread_data; | |
96 | static int nr_dispatched; | |
97 | static int threads_active; | |
98 | ||
99 | static pthread_mutex_t read_mutex; | |
100 | #define read_lock() lock_mutex(&read_mutex) | |
101 | #define read_unlock() unlock_mutex(&read_mutex) | |
102 | ||
103 | static pthread_mutex_t counter_mutex; | |
104 | #define counter_lock() lock_mutex(&counter_mutex) | |
105 | #define counter_unlock() unlock_mutex(&counter_mutex) | |
106 | ||
107 | static pthread_mutex_t work_mutex; | |
108 | #define work_lock() lock_mutex(&work_mutex) | |
109 | #define work_unlock() unlock_mutex(&work_mutex) | |
110 | ||
3aba2fdd NTND |
111 | static pthread_mutex_t deepest_delta_mutex; |
112 | #define deepest_delta_lock() lock_mutex(&deepest_delta_mutex) | |
113 | #define deepest_delta_unlock() unlock_mutex(&deepest_delta_mutex) | |
114 | ||
b8a2486f NTND |
115 | static pthread_key_t key; |
116 | ||
117 | static inline void lock_mutex(pthread_mutex_t *mutex) | |
118 | { | |
119 | if (threads_active) | |
120 | pthread_mutex_lock(mutex); | |
121 | } | |
122 | ||
123 | static inline void unlock_mutex(pthread_mutex_t *mutex) | |
124 | { | |
125 | if (threads_active) | |
126 | pthread_mutex_unlock(mutex); | |
127 | } | |
128 | ||
129 | /* | |
130 | * Mutex and conditional variable can't be statically-initialized on Windows. | |
131 | */ | |
132 | static void init_thread(void) | |
133 | { | |
39539495 | 134 | int i; |
b8a2486f NTND |
135 | init_recursive_mutex(&read_mutex); |
136 | pthread_mutex_init(&counter_mutex, NULL); | |
137 | pthread_mutex_init(&work_mutex, NULL); | |
3aba2fdd NTND |
138 | if (show_stat) |
139 | pthread_mutex_init(&deepest_delta_mutex, NULL); | |
b8a2486f NTND |
140 | pthread_key_create(&key, NULL); |
141 | thread_data = xcalloc(nr_threads, sizeof(*thread_data)); | |
39539495 NTND |
142 | for (i = 0; i < nr_threads; i++) { |
143 | thread_data[i].pack_fd = open(curr_pack, O_RDONLY); | |
144 | if (thread_data[i].pack_fd == -1) | |
145 | die_errno(_("unable to open %s"), curr_pack); | |
146 | } | |
147 | ||
b8a2486f NTND |
148 | threads_active = 1; |
149 | } | |
150 | ||
151 | static void cleanup_thread(void) | |
152 | { | |
39539495 | 153 | int i; |
b8a2486f NTND |
154 | if (!threads_active) |
155 | return; | |
156 | threads_active = 0; | |
157 | pthread_mutex_destroy(&read_mutex); | |
158 | pthread_mutex_destroy(&counter_mutex); | |
159 | pthread_mutex_destroy(&work_mutex); | |
3aba2fdd NTND |
160 | if (show_stat) |
161 | pthread_mutex_destroy(&deepest_delta_mutex); | |
39539495 NTND |
162 | for (i = 0; i < nr_threads; i++) |
163 | close(thread_data[i].pack_fd); | |
b8a2486f NTND |
164 | pthread_key_delete(key); |
165 | free(thread_data); | |
166 | } | |
167 | ||
168 | #else | |
169 | ||
170 | #define read_lock() | |
171 | #define read_unlock() | |
172 | ||
173 | #define counter_lock() | |
174 | #define counter_unlock() | |
175 | ||
176 | #define work_lock() | |
177 | #define work_unlock() | |
178 | ||
3aba2fdd NTND |
179 | #define deepest_delta_lock() |
180 | #define deepest_delta_unlock() | |
181 | ||
b8a2486f NTND |
182 | #endif |
183 | ||
184 | ||
0153be05 MK |
185 | static int mark_link(struct object *obj, int type, void *data) |
186 | { | |
187 | if (!obj) | |
188 | return -1; | |
189 | ||
190 | if (type != OBJ_ANY && obj->type != type) | |
c2b97ecf | 191 | die(_("object type mismatch at %s"), sha1_to_hex(obj->sha1)); |
0153be05 MK |
192 | |
193 | obj->flags |= FLAG_LINK; | |
194 | return 0; | |
195 | } | |
196 | ||
197 | /* The content of each linked object must have been checked | |
198 | or it must be already present in the object database */ | |
c6807a40 | 199 | static unsigned check_object(struct object *obj) |
0153be05 MK |
200 | { |
201 | if (!obj) | |
c6807a40 | 202 | return 0; |
0153be05 MK |
203 | |
204 | if (!(obj->flags & FLAG_LINK)) | |
c6807a40 | 205 | return 0; |
0153be05 MK |
206 | |
207 | if (!(obj->flags & FLAG_CHECKED)) { | |
208 | unsigned long size; | |
209 | int type = sha1_object_info(obj->sha1, &size); | |
77583e77 JK |
210 | if (type <= 0) |
211 | die(_("did not receive expected object %s"), | |
212 | sha1_to_hex(obj->sha1)); | |
213 | if (type != obj->type) | |
214 | die(_("object %s: expected type %s, found %s"), | |
215 | sha1_to_hex(obj->sha1), | |
216 | typename(obj->type), typename(type)); | |
0153be05 | 217 | obj->flags |= FLAG_CHECKED; |
c6807a40 | 218 | return 1; |
0153be05 | 219 | } |
c6807a40 NTND |
220 | |
221 | return 0; | |
0153be05 MK |
222 | } |
223 | ||
c6807a40 | 224 | static unsigned check_objects(void) |
0153be05 | 225 | { |
c6807a40 | 226 | unsigned i, max, foreign_nr = 0; |
0153be05 MK |
227 | |
228 | max = get_max_object_index(); | |
229 | for (i = 0; i < max; i++) | |
c6807a40 NTND |
230 | foreign_nr += check_object(get_indexed_object(i)); |
231 | return foreign_nr; | |
0153be05 MK |
232 | } |
233 | ||
234 | ||
636171cb | 235 | /* Discard current buffer used content. */ |
a6e8a767 | 236 | static void flush(void) |
636171cb NP |
237 | { |
238 | if (input_offset) { | |
239 | if (output_fd >= 0) | |
240 | write_or_die(output_fd, input_buffer, input_offset); | |
9126f009 | 241 | git_SHA1_Update(&input_ctx, input_buffer, input_offset); |
554a2636 | 242 | memmove(input_buffer, input_buffer + input_offset, input_len); |
636171cb NP |
243 | input_offset = 0; |
244 | } | |
245 | } | |
246 | ||
2d477051 NP |
247 | /* |
248 | * Make sure at least "min" bytes are available in the buffer, and | |
249 | * return the pointer to the buffer. | |
250 | */ | |
b89c4e93 | 251 | static void *fill(int min) |
9cf6d335 | 252 | { |
2d477051 NP |
253 | if (min <= input_len) |
254 | return input_buffer + input_offset; | |
255 | if (min > sizeof(input_buffer)) | |
c2b97ecf NTND |
256 | die(Q_("cannot fill %d byte", |
257 | "cannot fill %d bytes", | |
258 | min), | |
259 | min); | |
636171cb | 260 | flush(); |
2d477051 | 261 | do { |
8a912bcb | 262 | ssize_t ret = xread(input_fd, input_buffer + input_len, |
2d477051 NP |
263 | sizeof(input_buffer) - input_len); |
264 | if (ret <= 0) { | |
265 | if (!ret) | |
c2b97ecf NTND |
266 | die(_("early EOF")); |
267 | die_errno(_("read error on input")); | |
2d477051 NP |
268 | } |
269 | input_len += ret; | |
218558af NP |
270 | if (from_stdin) |
271 | display_throughput(progress, consumed_bytes + input_len); | |
2d477051 NP |
272 | } while (input_len < min); |
273 | return input_buffer; | |
274 | } | |
275 | ||
276 | static void use(int bytes) | |
277 | { | |
278 | if (bytes > input_len) | |
c2b97ecf | 279 | die(_("used more bytes than were available")); |
ee5743ce | 280 | input_crc32 = crc32(input_crc32, input_buffer + input_offset, bytes); |
2d477051 NP |
281 | input_len -= bytes; |
282 | input_offset += bytes; | |
d7dd0223 NP |
283 | |
284 | /* make sure off_t is sufficiently large not to wrap */ | |
c03c8315 | 285 | if (signed_add_overflows(consumed_bytes, bytes)) |
c2b97ecf | 286 | die(_("pack too large for current definition of off_t")); |
2d477051 NP |
287 | consumed_bytes += bytes; |
288 | } | |
9cf6d335 | 289 | |
3bb72562 | 290 | static const char *open_pack_file(const char *pack_name) |
2d477051 | 291 | { |
e42797f5 NP |
292 | if (from_stdin) { |
293 | input_fd = 0; | |
294 | if (!pack_name) { | |
ab1900a3 ÆAB |
295 | static char tmp_file[PATH_MAX]; |
296 | output_fd = odb_mkstemp(tmp_file, sizeof(tmp_file), | |
6e180cdc | 297 | "pack/tmp_pack_XXXXXX"); |
ab1900a3 | 298 | pack_name = xstrdup(tmp_file); |
e42797f5 NP |
299 | } else |
300 | output_fd = open(pack_name, O_CREAT|O_EXCL|O_RDWR, 0600); | |
301 | if (output_fd < 0) | |
c2b97ecf | 302 | die_errno(_("unable to create '%s'"), pack_name); |
39539495 | 303 | nothread_data.pack_fd = output_fd; |
e42797f5 NP |
304 | } else { |
305 | input_fd = open(pack_name, O_RDONLY); | |
306 | if (input_fd < 0) | |
c2b97ecf | 307 | die_errno(_("cannot open packfile '%s'"), pack_name); |
e42797f5 | 308 | output_fd = -1; |
39539495 | 309 | nothread_data.pack_fd = input_fd; |
e42797f5 | 310 | } |
9126f009 | 311 | git_SHA1_Init(&input_ctx); |
e42797f5 | 312 | return pack_name; |
9cf6d335 SV |
313 | } |
314 | ||
315 | static void parse_pack_header(void) | |
316 | { | |
2d477051 | 317 | struct pack_header *hdr = fill(sizeof(struct pack_header)); |
9cf6d335 SV |
318 | |
319 | /* Header consistency check */ | |
9cf6d335 | 320 | if (hdr->hdr_signature != htonl(PACK_SIGNATURE)) |
c2b97ecf | 321 | die(_("pack signature mismatch")); |
d60fc1c8 | 322 | if (!pack_version_ok(hdr->hdr_version)) |
f350df42 | 323 | die(_("pack version %"PRIu32" unsupported"), |
6e1c2344 | 324 | ntohl(hdr->hdr_version)); |
9cf6d335 SV |
325 | |
326 | nr_objects = ntohl(hdr->hdr_entries); | |
2d477051 | 327 | use(sizeof(struct pack_header)); |
9cf6d335 SV |
328 | } |
329 | ||
a4f3131c EFL |
330 | static NORETURN void bad_object(unsigned long offset, const char *format, |
331 | ...) __attribute__((format (printf, 2, 3))); | |
9cf6d335 | 332 | |
c2e86add | 333 | static NORETURN void bad_object(unsigned long offset, const char *format, ...) |
9cf6d335 SV |
334 | { |
335 | va_list params; | |
336 | char buf[1024]; | |
337 | ||
338 | va_start(params, format); | |
339 | vsnprintf(buf, sizeof(buf), format, params); | |
340 | va_end(params); | |
c2b97ecf | 341 | die(_("pack has bad object at offset %lu: %s"), offset, buf); |
9cf6d335 SV |
342 | } |
343 | ||
b8a2486f NTND |
344 | static inline struct thread_local *get_thread_data(void) |
345 | { | |
346 | #ifndef NO_PTHREADS | |
347 | if (threads_active) | |
348 | return pthread_getspecific(key); | |
349 | assert(!threads_active && | |
350 | "This should only be reached when all threads are gone"); | |
351 | #endif | |
352 | return ¬hread_data; | |
353 | } | |
354 | ||
355 | #ifndef NO_PTHREADS | |
356 | static void set_thread_data(struct thread_local *data) | |
357 | { | |
358 | if (threads_active) | |
359 | pthread_setspecific(key, data); | |
360 | } | |
361 | #endif | |
362 | ||
2baad220 NTND |
363 | static struct base_data *alloc_base_data(void) |
364 | { | |
51a60f5b | 365 | struct base_data *base = xcalloc(1, sizeof(struct base_data)); |
2baad220 NTND |
366 | base->ref_last = -1; |
367 | base->ofs_last = -1; | |
368 | return base; | |
369 | } | |
370 | ||
6a87ed97 NP |
371 | static void free_base_data(struct base_data *c) |
372 | { | |
373 | if (c->data) { | |
374 | free(c->data); | |
375 | c->data = NULL; | |
b8a2486f | 376 | get_thread_data()->base_cache_used -= c->size; |
6a87ed97 NP |
377 | } |
378 | } | |
379 | ||
92392b4a SP |
380 | static void prune_base_data(struct base_data *retain) |
381 | { | |
8e24cbae | 382 | struct base_data *b; |
b8a2486f NTND |
383 | struct thread_local *data = get_thread_data(); |
384 | for (b = data->base_cache; | |
385 | data->base_cache_used > delta_base_cache_limit && b; | |
92392b4a | 386 | b = b->child) { |
6a87ed97 NP |
387 | if (b->data && b != retain) |
388 | free_base_data(b); | |
92392b4a SP |
389 | } |
390 | } | |
391 | ||
4a438cab SP |
392 | static void link_base_data(struct base_data *base, struct base_data *c) |
393 | { | |
394 | if (base) | |
395 | base->child = c; | |
396 | else | |
b8a2486f | 397 | get_thread_data()->base_cache = c; |
4a438cab SP |
398 | |
399 | c->base = base; | |
400 | c->child = NULL; | |
9441b61d | 401 | if (c->data) |
b8a2486f | 402 | get_thread_data()->base_cache_used += c->size; |
92392b4a | 403 | prune_base_data(c); |
4a438cab SP |
404 | } |
405 | ||
406 | static void unlink_base_data(struct base_data *c) | |
407 | { | |
408 | struct base_data *base = c->base; | |
409 | if (base) | |
410 | base->child = NULL; | |
411 | else | |
b8a2486f | 412 | get_thread_data()->base_cache = NULL; |
6a87ed97 | 413 | free_base_data(c); |
4a438cab SP |
414 | } |
415 | ||
681b07de NTND |
416 | static int is_delta_type(enum object_type type) |
417 | { | |
418 | return (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA); | |
419 | } | |
420 | ||
421 | static void *unpack_entry_data(unsigned long offset, unsigned long size, | |
422 | enum object_type type, unsigned char *sha1) | |
9cf6d335 | 423 | { |
9ec2dde9 | 424 | static char fixed_buf[8192]; |
7ce4721a | 425 | int status; |
ef49a7a0 | 426 | git_zstream stream; |
9ec2dde9 | 427 | void *buf; |
681b07de NTND |
428 | git_SHA_CTX c; |
429 | char hdr[32]; | |
430 | int hdrlen; | |
431 | ||
432 | if (!is_delta_type(type)) { | |
433 | hdrlen = sprintf(hdr, "%s %lu", typename(type), size) + 1; | |
434 | git_SHA1_Init(&c); | |
435 | git_SHA1_Update(&c, hdr, hdrlen); | |
436 | } else | |
437 | sha1 = NULL; | |
9ec2dde9 NTND |
438 | if (type == OBJ_BLOB && size > big_file_threshold) |
439 | buf = fixed_buf; | |
440 | else | |
441 | buf = xmalloc(size); | |
9cf6d335 SV |
442 | |
443 | memset(&stream, 0, sizeof(stream)); | |
7ce4721a | 444 | git_inflate_init(&stream); |
9cf6d335 | 445 | stream.next_out = buf; |
9ec2dde9 | 446 | stream.avail_out = buf == fixed_buf ? sizeof(fixed_buf) : size; |
9cf6d335 | 447 | |
7ce4721a | 448 | do { |
681b07de | 449 | unsigned char *last_out = stream.next_out; |
2d477051 NP |
450 | stream.next_in = fill(1); |
451 | stream.avail_in = input_len; | |
7ce4721a NP |
452 | status = git_inflate(&stream, 0); |
453 | use(input_len - stream.avail_in); | |
681b07de NTND |
454 | if (sha1) |
455 | git_SHA1_Update(&c, last_out, stream.next_out - last_out); | |
9ec2dde9 NTND |
456 | if (buf == fixed_buf) { |
457 | stream.next_out = buf; | |
458 | stream.avail_out = sizeof(fixed_buf); | |
459 | } | |
7ce4721a NP |
460 | } while (status == Z_OK); |
461 | if (stream.total_out != size || status != Z_STREAM_END) | |
c2b97ecf | 462 | bad_object(offset, _("inflate returned %d"), status); |
39c68542 | 463 | git_inflate_end(&stream); |
681b07de NTND |
464 | if (sha1) |
465 | git_SHA1_Final(sha1, &c); | |
9ec2dde9 | 466 | return buf == fixed_buf ? NULL : buf; |
9cf6d335 SV |
467 | } |
468 | ||
681b07de NTND |
469 | static void *unpack_raw_entry(struct object_entry *obj, |
470 | union delta_base *delta_base, | |
471 | unsigned char *sha1) | |
9cf6d335 | 472 | { |
48fb7deb LT |
473 | unsigned char *p; |
474 | unsigned long size, c; | |
d7dd0223 | 475 | off_t base_offset; |
9cf6d335 | 476 | unsigned shift; |
ee5743ce | 477 | void *data; |
9cf6d335 | 478 | |
aa7e44bf | 479 | obj->idx.offset = consumed_bytes; |
1e4cd68c | 480 | input_crc32 = crc32(0, NULL, 0); |
2d477051 NP |
481 | |
482 | p = fill(1); | |
483 | c = *p; | |
484 | use(1); | |
485 | obj->type = (c >> 4) & 7; | |
9cf6d335 SV |
486 | size = (c & 15); |
487 | shift = 4; | |
488 | while (c & 0x80) { | |
2d477051 NP |
489 | p = fill(1); |
490 | c = *p; | |
491 | use(1); | |
48fb7deb | 492 | size += (c & 0x7f) << shift; |
9cf6d335 SV |
493 | shift += 7; |
494 | } | |
2d477051 | 495 | obj->size = size; |
9cf6d335 | 496 | |
2d477051 | 497 | switch (obj->type) { |
eb32d236 | 498 | case OBJ_REF_DELTA: |
2d477051 NP |
499 | hashcpy(delta_base->sha1, fill(20)); |
500 | use(20); | |
53dda6ff NP |
501 | break; |
502 | case OBJ_OFS_DELTA: | |
503 | memset(delta_base, 0, sizeof(*delta_base)); | |
2d477051 NP |
504 | p = fill(1); |
505 | c = *p; | |
506 | use(1); | |
53dda6ff NP |
507 | base_offset = c & 127; |
508 | while (c & 128) { | |
509 | base_offset += 1; | |
8723f216 | 510 | if (!base_offset || MSB(base_offset, 7)) |
c2b97ecf | 511 | bad_object(obj->idx.offset, _("offset value overflow for delta base object")); |
2d477051 NP |
512 | p = fill(1); |
513 | c = *p; | |
514 | use(1); | |
53dda6ff NP |
515 | base_offset = (base_offset << 7) + (c & 127); |
516 | } | |
aa7e44bf | 517 | delta_base->offset = obj->idx.offset - base_offset; |
d8f32556 | 518 | if (delta_base->offset <= 0 || delta_base->offset >= obj->idx.offset) |
c2b97ecf | 519 | bad_object(obj->idx.offset, _("delta base offset is out of bound")); |
53dda6ff | 520 | break; |
9cf6d335 SV |
521 | case OBJ_COMMIT: |
522 | case OBJ_TREE: | |
523 | case OBJ_BLOB: | |
524 | case OBJ_TAG: | |
9cf6d335 SV |
525 | break; |
526 | default: | |
c2b97ecf | 527 | bad_object(obj->idx.offset, _("unknown object type %d"), obj->type); |
9cf6d335 | 528 | } |
aa7e44bf | 529 | obj->hdr_size = consumed_bytes - obj->idx.offset; |
2d477051 | 530 | |
681b07de | 531 | data = unpack_entry_data(obj->idx.offset, obj->size, obj->type, sha1); |
aa7e44bf | 532 | obj->idx.crc32 = input_crc32; |
ee5743ce | 533 | return data; |
2d477051 NP |
534 | } |
535 | ||
8a2e163c NTND |
536 | static void *unpack_data(struct object_entry *obj, |
537 | int (*consume)(const unsigned char *, unsigned long, void *), | |
538 | void *cb_data) | |
2d477051 | 539 | { |
a91ef6e7 | 540 | off_t from = obj[0].idx.offset + obj[0].hdr_size; |
aa7e44bf | 541 | unsigned long len = obj[1].idx.offset - from; |
776ea370 | 542 | unsigned char *data, *inbuf; |
ef49a7a0 | 543 | git_zstream stream; |
776ea370 | 544 | int status; |
9cf6d335 | 545 | |
8a2e163c | 546 | data = xmalloc(consume ? 64*1024 : obj->size); |
776ea370 NP |
547 | inbuf = xmalloc((len < 64*1024) ? len : 64*1024); |
548 | ||
2d477051 | 549 | memset(&stream, 0, sizeof(stream)); |
776ea370 | 550 | git_inflate_init(&stream); |
2d477051 | 551 | stream.next_out = data; |
8a2e163c | 552 | stream.avail_out = consume ? 64*1024 : obj->size; |
776ea370 NP |
553 | |
554 | do { | |
555 | ssize_t n = (len < 64*1024) ? len : 64*1024; | |
53f52cd9 | 556 | n = xpread(get_thread_data()->pack_fd, inbuf, n, from); |
776ea370 | 557 | if (n < 0) |
c2b97ecf | 558 | die_errno(_("cannot pread pack file")); |
776ea370 | 559 | if (!n) |
c2b97ecf NTND |
560 | die(Q_("premature end of pack file, %lu byte missing", |
561 | "premature end of pack file, %lu bytes missing", | |
562 | len), | |
563 | len); | |
776ea370 NP |
564 | from += n; |
565 | len -= n; | |
566 | stream.next_in = inbuf; | |
567 | stream.avail_in = n; | |
f8b09038 JK |
568 | if (!consume) |
569 | status = git_inflate(&stream, 0); | |
570 | else { | |
571 | do { | |
572 | status = git_inflate(&stream, 0); | |
573 | if (consume(data, stream.next_out - data, cb_data)) { | |
574 | free(inbuf); | |
575 | free(data); | |
576 | return NULL; | |
577 | } | |
578 | stream.next_out = data; | |
579 | stream.avail_out = 64*1024; | |
580 | } while (status == Z_OK && stream.avail_in); | |
8a2e163c | 581 | } |
776ea370 NP |
582 | } while (len && status == Z_OK && !stream.avail_in); |
583 | ||
584 | /* This has been inflated OK when first encountered, so... */ | |
585 | if (status != Z_STREAM_END || stream.total_out != obj->size) | |
c2b97ecf | 586 | die(_("serious inflate inconsistency")); |
776ea370 NP |
587 | |
588 | git_inflate_end(&stream); | |
589 | free(inbuf); | |
8a2e163c NTND |
590 | if (consume) { |
591 | free(data); | |
592 | data = NULL; | |
593 | } | |
9cf6d335 SV |
594 | return data; |
595 | } | |
596 | ||
8a2e163c NTND |
597 | static void *get_data_from_pack(struct object_entry *obj) |
598 | { | |
599 | return unpack_data(obj, NULL, NULL); | |
600 | } | |
601 | ||
7218a215 JH |
602 | static int compare_delta_bases(const union delta_base *base1, |
603 | const union delta_base *base2, | |
604 | enum object_type type1, | |
605 | enum object_type type2) | |
606 | { | |
607 | int cmp = type1 - type2; | |
608 | if (cmp) | |
609 | return cmp; | |
610 | return memcmp(base1, base2, UNION_BASE_SZ); | |
611 | } | |
612 | ||
613 | static int find_delta(const union delta_base *base, enum object_type type) | |
9cf6d335 SV |
614 | { |
615 | int first = 0, last = nr_deltas; | |
616 | ||
617 | while (first < last) { | |
618 | int next = (first + last) / 2; | |
619 | struct delta_entry *delta = &deltas[next]; | |
620 | int cmp; | |
621 | ||
7218a215 JH |
622 | cmp = compare_delta_bases(base, &delta->base, |
623 | type, objects[delta->obj_no].type); | |
9cf6d335 SV |
624 | if (!cmp) |
625 | return next; | |
626 | if (cmp < 0) { | |
627 | last = next; | |
628 | continue; | |
629 | } | |
630 | first = next+1; | |
631 | } | |
632 | return -first-1; | |
633 | } | |
634 | ||
6a87ed97 | 635 | static void find_delta_children(const union delta_base *base, |
7218a215 JH |
636 | int *first_index, int *last_index, |
637 | enum object_type type) | |
9cf6d335 | 638 | { |
7218a215 | 639 | int first = find_delta(base, type); |
9cf6d335 SV |
640 | int last = first; |
641 | int end = nr_deltas - 1; | |
642 | ||
6a87ed97 NP |
643 | if (first < 0) { |
644 | *first_index = 0; | |
645 | *last_index = -1; | |
646 | return; | |
647 | } | |
3c552873 | 648 | while (first > 0 && !memcmp(&deltas[first - 1].base, base, UNION_BASE_SZ)) |
9cf6d335 | 649 | --first; |
3c552873 | 650 | while (last < end && !memcmp(&deltas[last + 1].base, base, UNION_BASE_SZ)) |
9cf6d335 SV |
651 | ++last; |
652 | *first_index = first; | |
653 | *last_index = last; | |
9cf6d335 SV |
654 | } |
655 | ||
4614043c NTND |
656 | struct compare_data { |
657 | struct object_entry *entry; | |
658 | struct git_istream *st; | |
659 | unsigned char *buf; | |
660 | unsigned long buf_size; | |
661 | }; | |
662 | ||
663 | static int compare_objects(const unsigned char *buf, unsigned long size, | |
664 | void *cb_data) | |
665 | { | |
666 | struct compare_data *data = cb_data; | |
667 | ||
668 | if (data->buf_size < size) { | |
669 | free(data->buf); | |
670 | data->buf = xmalloc(size); | |
671 | data->buf_size = size; | |
672 | } | |
673 | ||
674 | while (size) { | |
675 | ssize_t len = read_istream(data->st, data->buf, size); | |
676 | if (len == 0) | |
677 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
678 | sha1_to_hex(data->entry->idx.sha1)); | |
679 | if (len < 0) | |
680 | die(_("unable to read %s"), | |
681 | sha1_to_hex(data->entry->idx.sha1)); | |
682 | if (memcmp(buf, data->buf, len)) | |
683 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
684 | sha1_to_hex(data->entry->idx.sha1)); | |
685 | size -= len; | |
686 | buf += len; | |
687 | } | |
688 | return 0; | |
689 | } | |
690 | ||
691 | static int check_collison(struct object_entry *entry) | |
692 | { | |
693 | struct compare_data data; | |
694 | enum object_type type; | |
695 | unsigned long size; | |
696 | ||
697 | if (entry->size <= big_file_threshold || entry->type != OBJ_BLOB) | |
698 | return -1; | |
699 | ||
700 | memset(&data, 0, sizeof(data)); | |
701 | data.entry = entry; | |
702 | data.st = open_istream(entry->idx.sha1, &type, &size, NULL); | |
703 | if (!data.st) | |
704 | return -1; | |
705 | if (size != entry->size || type != entry->type) | |
706 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
707 | sha1_to_hex(entry->idx.sha1)); | |
708 | unpack_data(entry, compare_objects, &data); | |
709 | close_istream(data.st); | |
710 | free(data.buf); | |
711 | return 0; | |
712 | } | |
713 | ||
9ec2dde9 NTND |
714 | static void sha1_object(const void *data, struct object_entry *obj_entry, |
715 | unsigned long size, enum object_type type, | |
716 | const unsigned char *sha1) | |
9cf6d335 | 717 | { |
9ec2dde9 | 718 | void *new_data = NULL; |
4614043c | 719 | int collision_test_needed; |
9ec2dde9 NTND |
720 | |
721 | assert(data || obj_entry); | |
722 | ||
b8a2486f | 723 | read_lock(); |
4614043c NTND |
724 | collision_test_needed = has_sha1_file(sha1); |
725 | read_unlock(); | |
726 | ||
727 | if (collision_test_needed && !data) { | |
728 | read_lock(); | |
729 | if (!check_collison(obj_entry)) | |
730 | collision_test_needed = 0; | |
731 | read_unlock(); | |
732 | } | |
733 | if (collision_test_needed) { | |
8685da42 NP |
734 | void *has_data; |
735 | enum object_type has_type; | |
736 | unsigned long has_size; | |
4614043c NTND |
737 | read_lock(); |
738 | has_type = sha1_object_info(sha1, &has_size); | |
739 | if (has_type != type || has_size != size) | |
740 | die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1)); | |
8685da42 | 741 | has_data = read_sha1_file(sha1, &has_type, &has_size); |
b8a2486f | 742 | read_unlock(); |
4614043c NTND |
743 | if (!data) |
744 | data = new_data = get_data_from_pack(obj_entry); | |
8685da42 | 745 | if (!has_data) |
c2b97ecf | 746 | die(_("cannot read existing object %s"), sha1_to_hex(sha1)); |
8685da42 NP |
747 | if (size != has_size || type != has_type || |
748 | memcmp(data, has_data, size) != 0) | |
c2b97ecf | 749 | die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1)); |
bbf4b41b | 750 | free(has_data); |
4614043c | 751 | } |
b8a2486f | 752 | |
0153be05 | 753 | if (strict) { |
b8a2486f | 754 | read_lock(); |
0153be05 MK |
755 | if (type == OBJ_BLOB) { |
756 | struct blob *blob = lookup_blob(sha1); | |
757 | if (blob) | |
758 | blob->object.flags |= FLAG_CHECKED; | |
759 | else | |
c2b97ecf | 760 | die(_("invalid blob object %s"), sha1_to_hex(sha1)); |
0153be05 MK |
761 | } else { |
762 | struct object *obj; | |
763 | int eaten; | |
764 | void *buf = (void *) data; | |
765 | ||
920734b0 | 766 | assert(data && "data can only be NULL for large _blobs_"); |
9ec2dde9 | 767 | |
0153be05 MK |
768 | /* |
769 | * we do not need to free the memory here, as the | |
770 | * buf is deleted by the caller. | |
771 | */ | |
772 | obj = parse_object_buffer(sha1, type, size, buf, &eaten); | |
773 | if (!obj) | |
c2b97ecf | 774 | die(_("invalid %s"), typename(type)); |
c6807a40 NTND |
775 | if (do_fsck_object && |
776 | fsck_object(obj, 1, fsck_error_function)) | |
c2b97ecf | 777 | die(_("Error in object")); |
2af202be | 778 | if (fsck_walk(obj, mark_link, NULL)) |
c2b97ecf | 779 | die(_("Not all child objects of %s are reachable"), sha1_to_hex(obj->sha1)); |
0153be05 MK |
780 | |
781 | if (obj->type == OBJ_TREE) { | |
782 | struct tree *item = (struct tree *) obj; | |
783 | item->buffer = NULL; | |
6e454b9a | 784 | obj->parsed = 0; |
0153be05 MK |
785 | } |
786 | if (obj->type == OBJ_COMMIT) { | |
787 | struct commit *commit = (struct commit *) obj; | |
8597ea3a | 788 | if (detach_commit_buffer(commit, NULL) != data) |
0fb370da | 789 | die("BUG: parse_object_buffer transmogrified our buffer"); |
0153be05 MK |
790 | } |
791 | obj->flags |= FLAG_CHECKED; | |
792 | } | |
b8a2486f | 793 | read_unlock(); |
0153be05 | 794 | } |
9ec2dde9 NTND |
795 | |
796 | free(new_data); | |
9cf6d335 SV |
797 | } |
798 | ||
20e95d0a NTND |
799 | /* |
800 | * This function is part of find_unresolved_deltas(). There are two | |
801 | * walkers going in the opposite ways. | |
802 | * | |
803 | * The first one in find_unresolved_deltas() traverses down from | |
804 | * parent node to children, deflating nodes along the way. However, | |
805 | * memory for deflated nodes is limited by delta_base_cache_limit, so | |
806 | * at some point parent node's deflated content may be freed. | |
807 | * | |
808 | * The second walker is this function, which goes from current node up | |
809 | * to top parent if necessary to deflate the node. In normal | |
810 | * situation, its parent node would be already deflated, so it just | |
811 | * needs to apply delta. | |
812 | * | |
813 | * In the worst case scenario, parent node is no longer deflated because | |
814 | * we're running out of delta_base_cache_limit; we need to re-deflate | |
815 | * parents, possibly up to the top base. | |
816 | * | |
817 | * All deflated objects here are subject to be freed if we exceed | |
818 | * delta_base_cache_limit, just like in find_unresolved_deltas(), we | |
819 | * just need to make sure the last node is not freed. | |
820 | */ | |
92392b4a SP |
821 | static void *get_base_data(struct base_data *c) |
822 | { | |
823 | if (!c->data) { | |
824 | struct object_entry *obj = c->obj; | |
20e95d0a NTND |
825 | struct base_data **delta = NULL; |
826 | int delta_nr = 0, delta_alloc = 0; | |
92392b4a | 827 | |
20e95d0a NTND |
828 | while (is_delta_type(c->obj->type) && !c->data) { |
829 | ALLOC_GROW(delta, delta_nr + 1, delta_alloc); | |
830 | delta[delta_nr++] = c; | |
831 | c = c->base; | |
832 | } | |
833 | if (!delta_nr) { | |
834 | c->data = get_data_from_pack(obj); | |
835 | c->size = obj->size; | |
b8a2486f | 836 | get_thread_data()->base_cache_used += c->size; |
20e95d0a NTND |
837 | prune_base_data(c); |
838 | } | |
839 | for (; delta_nr > 0; delta_nr--) { | |
840 | void *base, *raw; | |
841 | c = delta[delta_nr - 1]; | |
842 | obj = c->obj; | |
843 | base = get_base_data(c->base); | |
844 | raw = get_data_from_pack(obj); | |
92392b4a SP |
845 | c->data = patch_delta( |
846 | base, c->base->size, | |
847 | raw, obj->size, | |
848 | &c->size); | |
849 | free(raw); | |
850 | if (!c->data) | |
c2b97ecf | 851 | bad_object(obj->idx.offset, _("failed to apply delta")); |
b8a2486f | 852 | get_thread_data()->base_cache_used += c->size; |
20e95d0a | 853 | prune_base_data(c); |
9441b61d | 854 | } |
20e95d0a | 855 | free(delta); |
92392b4a SP |
856 | } |
857 | return c->data; | |
858 | } | |
859 | ||
f41aebd4 | 860 | static void resolve_delta(struct object_entry *delta_obj, |
9441b61d | 861 | struct base_data *base, struct base_data *result) |
9cf6d335 | 862 | { |
ce3f6dc6 | 863 | void *base_data, *delta_data; |
9cf6d335 | 864 | |
ce3f6dc6 | 865 | delta_obj->real_type = base->obj->real_type; |
3aba2fdd NTND |
866 | if (show_stat) { |
867 | delta_obj->delta_depth = base->obj->delta_depth + 1; | |
868 | deepest_delta_lock(); | |
869 | if (deepest_delta < delta_obj->delta_depth) | |
870 | deepest_delta = delta_obj->delta_depth; | |
871 | deepest_delta_unlock(); | |
872 | } | |
38a45561 | 873 | delta_obj->base_object_no = base->obj - objects; |
636171cb | 874 | delta_data = get_data_from_pack(delta_obj); |
ce3f6dc6 | 875 | base_data = get_base_data(base); |
9441b61d | 876 | result->obj = delta_obj; |
ce3f6dc6 NP |
877 | result->data = patch_delta(base_data, base->size, |
878 | delta_data, delta_obj->size, &result->size); | |
9cf6d335 | 879 | free(delta_data); |
9441b61d | 880 | if (!result->data) |
c2b97ecf | 881 | bad_object(delta_obj->idx.offset, _("failed to apply delta")); |
681b07de NTND |
882 | hash_sha1_file(result->data, result->size, |
883 | typename(delta_obj->real_type), delta_obj->idx.sha1); | |
9ec2dde9 | 884 | sha1_object(result->data, NULL, result->size, delta_obj->real_type, |
9441b61d | 885 | delta_obj->idx.sha1); |
b8a2486f | 886 | counter_lock(); |
636171cb | 887 | nr_resolved_deltas++; |
b8a2486f | 888 | counter_unlock(); |
9441b61d NP |
889 | } |
890 | ||
2baad220 NTND |
891 | static struct base_data *find_unresolved_deltas_1(struct base_data *base, |
892 | struct base_data *prev_base) | |
9441b61d | 893 | { |
2baad220 | 894 | if (base->ref_last == -1 && base->ofs_last == -1) { |
9441b61d NP |
895 | union delta_base base_spec; |
896 | ||
897 | hashcpy(base_spec.sha1, base->obj->idx.sha1); | |
7218a215 | 898 | find_delta_children(&base_spec, |
2baad220 | 899 | &base->ref_first, &base->ref_last, OBJ_REF_DELTA); |
53dda6ff | 900 | |
9441b61d NP |
901 | memset(&base_spec, 0, sizeof(base_spec)); |
902 | base_spec.offset = base->obj->idx.offset; | |
7218a215 | 903 | find_delta_children(&base_spec, |
2baad220 | 904 | &base->ofs_first, &base->ofs_last, OBJ_OFS_DELTA); |
4a438cab | 905 | |
2baad220 NTND |
906 | if (base->ref_last == -1 && base->ofs_last == -1) { |
907 | free(base->data); | |
908 | return NULL; | |
909 | } | |
53dda6ff | 910 | |
2baad220 NTND |
911 | link_base_data(prev_base, base); |
912 | } | |
4a438cab | 913 | |
2baad220 NTND |
914 | if (base->ref_first <= base->ref_last) { |
915 | struct object_entry *child = objects + deltas[base->ref_first].obj_no; | |
916 | struct base_data *result = alloc_base_data(); | |
7218a215 JH |
917 | |
918 | assert(child->real_type == OBJ_REF_DELTA); | |
2baad220 NTND |
919 | resolve_delta(child, base, result); |
920 | if (base->ref_first == base->ref_last && base->ofs_last == -1) | |
7218a215 | 921 | free_base_data(base); |
2baad220 NTND |
922 | |
923 | base->ref_first++; | |
924 | return result; | |
53dda6ff NP |
925 | } |
926 | ||
2baad220 NTND |
927 | if (base->ofs_first <= base->ofs_last) { |
928 | struct object_entry *child = objects + deltas[base->ofs_first].obj_no; | |
929 | struct base_data *result = alloc_base_data(); | |
7218a215 JH |
930 | |
931 | assert(child->real_type == OBJ_OFS_DELTA); | |
2baad220 NTND |
932 | resolve_delta(child, base, result); |
933 | if (base->ofs_first == base->ofs_last) | |
7218a215 | 934 | free_base_data(base); |
2baad220 NTND |
935 | |
936 | base->ofs_first++; | |
937 | return result; | |
9cf6d335 | 938 | } |
53dda6ff | 939 | |
9441b61d | 940 | unlink_base_data(base); |
2baad220 NTND |
941 | return NULL; |
942 | } | |
943 | ||
944 | static void find_unresolved_deltas(struct base_data *base) | |
945 | { | |
946 | struct base_data *new_base, *prev_base = NULL; | |
947 | for (;;) { | |
948 | new_base = find_unresolved_deltas_1(base, prev_base); | |
949 | ||
950 | if (new_base) { | |
951 | prev_base = base; | |
952 | base = new_base; | |
953 | } else { | |
954 | free(base); | |
955 | base = prev_base; | |
956 | if (!base) | |
957 | return; | |
958 | prev_base = base->base; | |
959 | } | |
960 | } | |
9cf6d335 SV |
961 | } |
962 | ||
963 | static int compare_delta_entry(const void *a, const void *b) | |
964 | { | |
965 | const struct delta_entry *delta_a = a; | |
966 | const struct delta_entry *delta_b = b; | |
7218a215 JH |
967 | |
968 | /* group by type (ref vs ofs) and then by value (sha-1 or offset) */ | |
969 | return compare_delta_bases(&delta_a->base, &delta_b->base, | |
970 | objects[delta_a->obj_no].type, | |
971 | objects[delta_b->obj_no].type); | |
9cf6d335 SV |
972 | } |
973 | ||
5272f755 NTND |
974 | static void resolve_base(struct object_entry *obj) |
975 | { | |
976 | struct base_data *base_obj = alloc_base_data(); | |
977 | base_obj->obj = obj; | |
978 | base_obj->data = NULL; | |
979 | find_unresolved_deltas(base_obj); | |
980 | } | |
981 | ||
b8a2486f NTND |
982 | #ifndef NO_PTHREADS |
983 | static void *threaded_second_pass(void *data) | |
984 | { | |
985 | set_thread_data(data); | |
986 | for (;;) { | |
987 | int i; | |
8f82aad4 | 988 | counter_lock(); |
b8a2486f | 989 | display_progress(progress, nr_resolved_deltas); |
8f82aad4 TR |
990 | counter_unlock(); |
991 | work_lock(); | |
b8a2486f NTND |
992 | while (nr_dispatched < nr_objects && |
993 | is_delta_type(objects[nr_dispatched].type)) | |
994 | nr_dispatched++; | |
995 | if (nr_dispatched >= nr_objects) { | |
996 | work_unlock(); | |
997 | break; | |
998 | } | |
999 | i = nr_dispatched++; | |
1000 | work_unlock(); | |
1001 | ||
1002 | resolve_base(&objects[i]); | |
1003 | } | |
1004 | return NULL; | |
1005 | } | |
1006 | #endif | |
1007 | ||
5272f755 NTND |
1008 | /* |
1009 | * First pass: | |
1010 | * - find locations of all objects; | |
1011 | * - calculate SHA1 of all non-delta objects; | |
1012 | * - remember base (SHA1 or offset) for all deltas. | |
1013 | */ | |
2d477051 | 1014 | static void parse_pack_objects(unsigned char *sha1) |
9cf6d335 | 1015 | { |
9ec2dde9 | 1016 | int i, nr_delays = 0; |
53dda6ff | 1017 | struct delta_entry *delta = deltas; |
2d477051 | 1018 | struct stat st; |
9cf6d335 | 1019 | |
13aaf148 | 1020 | if (verbose) |
29e63ed3 | 1021 | progress = start_progress( |
c2b97ecf | 1022 | from_stdin ? _("Receiving objects") : _("Indexing objects"), |
29e63ed3 | 1023 | nr_objects); |
9cf6d335 SV |
1024 | for (i = 0; i < nr_objects; i++) { |
1025 | struct object_entry *obj = &objects[i]; | |
681b07de | 1026 | void *data = unpack_raw_entry(obj, &delta->base, obj->idx.sha1); |
9cf6d335 | 1027 | obj->real_type = obj->type; |
4f8ec74e | 1028 | if (is_delta_type(obj->type)) { |
53dda6ff | 1029 | nr_deltas++; |
636171cb | 1030 | delta->obj_no = i; |
53dda6ff | 1031 | delta++; |
9ec2dde9 NTND |
1032 | } else if (!data) { |
1033 | /* large blobs, check later */ | |
1034 | obj->real_type = OBJ_BAD; | |
1035 | nr_delays++; | |
9cf6d335 | 1036 | } else |
9ec2dde9 | 1037 | sha1_object(data, NULL, obj->size, obj->type, obj->idx.sha1); |
9cf6d335 | 1038 | free(data); |
4d4fcc54 | 1039 | display_progress(progress, i+1); |
9cf6d335 | 1040 | } |
aa7e44bf | 1041 | objects[i].idx.offset = consumed_bytes; |
4d4fcc54 | 1042 | stop_progress(&progress); |
2d477051 NP |
1043 | |
1044 | /* Check pack integrity */ | |
636171cb | 1045 | flush(); |
9126f009 | 1046 | git_SHA1_Final(sha1, &input_ctx); |
2d477051 | 1047 | if (hashcmp(fill(20), sha1)) |
c2b97ecf | 1048 | die(_("pack is corrupted (SHA1 mismatch)")); |
9bee2478 | 1049 | use(20); |
2d477051 NP |
1050 | |
1051 | /* If input_fd is a file, we should have reached its end now. */ | |
1052 | if (fstat(input_fd, &st)) | |
c2b97ecf | 1053 | die_errno(_("cannot fstat packfile")); |
fa257b05 JS |
1054 | if (S_ISREG(st.st_mode) && |
1055 | lseek(input_fd, 0, SEEK_CUR) - input_len != st.st_size) | |
c2b97ecf | 1056 | die(_("pack has junk at the end")); |
9ec2dde9 NTND |
1057 | |
1058 | for (i = 0; i < nr_objects; i++) { | |
1059 | struct object_entry *obj = &objects[i]; | |
1060 | if (obj->real_type != OBJ_BAD) | |
1061 | continue; | |
1062 | obj->real_type = obj->type; | |
1063 | sha1_object(NULL, obj, obj->size, obj->type, obj->idx.sha1); | |
1064 | nr_delays--; | |
1065 | } | |
1066 | if (nr_delays) | |
1067 | die(_("confusion beyond insanity in parse_pack_objects()")); | |
5272f755 NTND |
1068 | } |
1069 | ||
1070 | /* | |
1071 | * Second pass: | |
1072 | * - for all non-delta objects, look if it is used as a base for | |
1073 | * deltas; | |
1074 | * - if used as a base, uncompress the object and apply all deltas, | |
1075 | * recursively checking if the resulting object is used as a base | |
1076 | * for some more deltas. | |
1077 | */ | |
1078 | static void resolve_deltas(void) | |
1079 | { | |
1080 | int i; | |
9cf6d335 | 1081 | |
3c9af366 NP |
1082 | if (!nr_deltas) |
1083 | return; | |
1084 | ||
53dda6ff | 1085 | /* Sort deltas by base SHA1/offset for fast searching */ |
9cf6d335 SV |
1086 | qsort(deltas, nr_deltas, sizeof(struct delta_entry), |
1087 | compare_delta_entry); | |
1088 | ||
13aaf148 | 1089 | if (verbose) |
c2b97ecf | 1090 | progress = start_progress(_("Resolving deltas"), nr_deltas); |
b8a2486f NTND |
1091 | |
1092 | #ifndef NO_PTHREADS | |
1093 | nr_dispatched = 0; | |
1094 | if (nr_threads > 1 || getenv("GIT_FORCE_THREADS")) { | |
1095 | init_thread(); | |
1096 | for (i = 0; i < nr_threads; i++) { | |
1097 | int ret = pthread_create(&thread_data[i].thread, NULL, | |
1098 | threaded_second_pass, thread_data + i); | |
1099 | if (ret) | |
f350df42 NTND |
1100 | die(_("unable to create thread: %s"), |
1101 | strerror(ret)); | |
b8a2486f NTND |
1102 | } |
1103 | for (i = 0; i < nr_threads; i++) | |
1104 | pthread_join(thread_data[i].thread, NULL); | |
1105 | cleanup_thread(); | |
1106 | return; | |
1107 | } | |
1108 | #endif | |
1109 | ||
9cf6d335 SV |
1110 | for (i = 0; i < nr_objects; i++) { |
1111 | struct object_entry *obj = &objects[i]; | |
9cf6d335 | 1112 | |
4f8ec74e | 1113 | if (is_delta_type(obj->type)) |
9cf6d335 | 1114 | continue; |
5272f755 | 1115 | resolve_base(obj); |
4d4fcc54 | 1116 | display_progress(progress, nr_resolved_deltas); |
9cf6d335 | 1117 | } |
636171cb NP |
1118 | } |
1119 | ||
5272f755 NTND |
1120 | /* |
1121 | * Third pass: | |
1122 | * - append objects to convert thin pack to full pack if required | |
1123 | * - write the final 20-byte SHA-1 | |
1124 | */ | |
1125 | static void fix_unresolved_deltas(struct sha1file *f, int nr_unresolved); | |
1126 | static void conclude_pack(int fix_thin_pack, const char *curr_pack, unsigned char *pack_sha1) | |
1127 | { | |
1128 | if (nr_deltas == nr_resolved_deltas) { | |
1129 | stop_progress(&progress); | |
1130 | /* Flush remaining pack final 20-byte SHA1. */ | |
1131 | flush(); | |
1132 | return; | |
1133 | } | |
1134 | ||
1135 | if (fix_thin_pack) { | |
1136 | struct sha1file *f; | |
1137 | unsigned char read_sha1[20], tail_sha1[20]; | |
5c3459fc | 1138 | struct strbuf msg = STRBUF_INIT; |
5272f755 NTND |
1139 | int nr_unresolved = nr_deltas - nr_resolved_deltas; |
1140 | int nr_objects_initial = nr_objects; | |
1141 | if (nr_unresolved <= 0) | |
cc13431a | 1142 | die(_("confusion beyond insanity")); |
5272f755 NTND |
1143 | objects = xrealloc(objects, |
1144 | (nr_objects + nr_unresolved + 1) | |
1145 | * sizeof(*objects)); | |
57165db0 JK |
1146 | memset(objects + nr_objects + 1, 0, |
1147 | nr_unresolved * sizeof(*objects)); | |
5272f755 NTND |
1148 | f = sha1fd(output_fd, curr_pack); |
1149 | fix_unresolved_deltas(f, nr_unresolved); | |
5c3459fc NTND |
1150 | strbuf_addf(&msg, _("completed with %d local objects"), |
1151 | nr_objects - nr_objects_initial); | |
1152 | stop_progress_msg(&progress, msg.buf); | |
1153 | strbuf_release(&msg); | |
5272f755 NTND |
1154 | sha1close(f, tail_sha1, 0); |
1155 | hashcpy(read_sha1, pack_sha1); | |
1156 | fixup_pack_header_footer(output_fd, pack_sha1, | |
1157 | curr_pack, nr_objects, | |
1158 | read_sha1, consumed_bytes-20); | |
1159 | if (hashcmp(read_sha1, tail_sha1) != 0) | |
f350df42 NTND |
1160 | die(_("Unexpected tail checksum for %s " |
1161 | "(disk corruption?)"), curr_pack); | |
5272f755 NTND |
1162 | } |
1163 | if (nr_deltas != nr_resolved_deltas) | |
cc13431a JH |
1164 | die(Q_("pack has %d unresolved delta", |
1165 | "pack has %d unresolved deltas", | |
1166 | nr_deltas - nr_resolved_deltas), | |
5272f755 NTND |
1167 | nr_deltas - nr_resolved_deltas); |
1168 | } | |
1169 | ||
8522148f | 1170 | static int write_compressed(struct sha1file *f, void *in, unsigned int size) |
636171cb | 1171 | { |
ef49a7a0 | 1172 | git_zstream stream; |
7734d7f2 NP |
1173 | int status; |
1174 | unsigned char outbuf[4096]; | |
636171cb NP |
1175 | |
1176 | memset(&stream, 0, sizeof(stream)); | |
55bb5c91 | 1177 | git_deflate_init(&stream, zlib_compression_level); |
636171cb NP |
1178 | stream.next_in = in; |
1179 | stream.avail_in = size; | |
636171cb | 1180 | |
7734d7f2 NP |
1181 | do { |
1182 | stream.next_out = outbuf; | |
1183 | stream.avail_out = sizeof(outbuf); | |
55bb5c91 | 1184 | status = git_deflate(&stream, Z_FINISH); |
7734d7f2 NP |
1185 | sha1write(f, outbuf, sizeof(outbuf) - stream.avail_out); |
1186 | } while (status == Z_OK); | |
1187 | ||
1188 | if (status != Z_STREAM_END) | |
c2b97ecf | 1189 | die(_("unable to deflate appended object (%d)"), status); |
636171cb | 1190 | size = stream.total_out; |
55bb5c91 | 1191 | git_deflate_end(&stream); |
636171cb NP |
1192 | return size; |
1193 | } | |
1194 | ||
8522148f | 1195 | static struct object_entry *append_obj_to_pack(struct sha1file *f, |
03993e13 | 1196 | const unsigned char *sha1, void *buf, |
636171cb NP |
1197 | unsigned long size, enum object_type type) |
1198 | { | |
1199 | struct object_entry *obj = &objects[nr_objects++]; | |
1200 | unsigned char header[10]; | |
1201 | unsigned long s = size; | |
1202 | int n = 0; | |
1203 | unsigned char c = (type << 4) | (s & 15); | |
1204 | s >>= 4; | |
1205 | while (s) { | |
1206 | header[n++] = c | 0x80; | |
1207 | c = s & 0x7f; | |
1208 | s >>= 7; | |
1209 | } | |
1210 | header[n++] = c; | |
8522148f NP |
1211 | crc32_begin(f); |
1212 | sha1write(f, header, n); | |
72de2883 BS |
1213 | obj[0].size = size; |
1214 | obj[0].hdr_size = n; | |
1215 | obj[0].type = type; | |
1216 | obj[0].real_type = type; | |
aa7e44bf | 1217 | obj[1].idx.offset = obj[0].idx.offset + n; |
8522148f NP |
1218 | obj[1].idx.offset += write_compressed(f, buf, size); |
1219 | obj[0].idx.crc32 = crc32_end(f); | |
838cd346 | 1220 | sha1flush(f); |
aa7e44bf | 1221 | hashcpy(obj->idx.sha1, sha1); |
03993e13 | 1222 | return obj; |
636171cb NP |
1223 | } |
1224 | ||
1225 | static int delta_pos_compare(const void *_a, const void *_b) | |
1226 | { | |
1227 | struct delta_entry *a = *(struct delta_entry **)_a; | |
1228 | struct delta_entry *b = *(struct delta_entry **)_b; | |
1229 | return a->obj_no - b->obj_no; | |
1230 | } | |
9cf6d335 | 1231 | |
8522148f | 1232 | static void fix_unresolved_deltas(struct sha1file *f, int nr_unresolved) |
636171cb NP |
1233 | { |
1234 | struct delta_entry **sorted_by_pos; | |
96a02f8f | 1235 | int i, n = 0; |
636171cb NP |
1236 | |
1237 | /* | |
1238 | * Since many unresolved deltas may well be themselves base objects | |
1239 | * for more unresolved deltas, we really want to include the | |
1240 | * smallest number of base objects that would cover as much delta | |
1241 | * as possible by picking the | |
1242 | * trunc deltas first, allowing for other deltas to resolve without | |
1243 | * additional base objects. Since most base objects are to be found | |
1244 | * before deltas depending on them, a good heuristic is to start | |
1245 | * resolving deltas in the same order as their position in the pack. | |
1246 | */ | |
1247 | sorted_by_pos = xmalloc(nr_unresolved * sizeof(*sorted_by_pos)); | |
9cf6d335 | 1248 | for (i = 0; i < nr_deltas; i++) { |
636171cb NP |
1249 | if (objects[deltas[i].obj_no].real_type != OBJ_REF_DELTA) |
1250 | continue; | |
1251 | sorted_by_pos[n++] = &deltas[i]; | |
9cf6d335 | 1252 | } |
636171cb NP |
1253 | qsort(sorted_by_pos, n, sizeof(*sorted_by_pos), delta_pos_compare); |
1254 | ||
1255 | for (i = 0; i < n; i++) { | |
1256 | struct delta_entry *d = sorted_by_pos[i]; | |
21666f1a | 1257 | enum object_type type; |
2baad220 | 1258 | struct base_data *base_obj = alloc_base_data(); |
636171cb NP |
1259 | |
1260 | if (objects[d->obj_no].real_type != OBJ_REF_DELTA) | |
1261 | continue; | |
2baad220 NTND |
1262 | base_obj->data = read_sha1_file(d->base.sha1, &type, &base_obj->size); |
1263 | if (!base_obj->data) | |
636171cb | 1264 | continue; |
636171cb | 1265 | |
2baad220 NTND |
1266 | if (check_sha1_signature(d->base.sha1, base_obj->data, |
1267 | base_obj->size, typename(type))) | |
c2b97ecf | 1268 | die(_("local object %s is corrupt"), sha1_to_hex(d->base.sha1)); |
2baad220 NTND |
1269 | base_obj->obj = append_obj_to_pack(f, d->base.sha1, |
1270 | base_obj->data, base_obj->size, type); | |
1271 | find_unresolved_deltas(base_obj); | |
4d4fcc54 | 1272 | display_progress(progress, nr_resolved_deltas); |
636171cb NP |
1273 | } |
1274 | free(sorted_by_pos); | |
1275 | } | |
1276 | ||
e42797f5 NP |
1277 | static void final(const char *final_pack_name, const char *curr_pack_name, |
1278 | const char *final_index_name, const char *curr_index_name, | |
b8077709 | 1279 | const char *keep_name, const char *keep_msg, |
e42797f5 NP |
1280 | unsigned char *sha1) |
1281 | { | |
3a55602e | 1282 | const char *report = "pack"; |
e42797f5 NP |
1283 | char name[PATH_MAX]; |
1284 | int err; | |
1285 | ||
1286 | if (!from_stdin) { | |
1287 | close(input_fd); | |
1288 | } else { | |
4c81b03e | 1289 | fsync_or_die(output_fd, curr_pack_name); |
e42797f5 NP |
1290 | err = close(output_fd); |
1291 | if (err) | |
c2b97ecf | 1292 | die_errno(_("error while closing pack file")); |
e42797f5 NP |
1293 | } |
1294 | ||
b8077709 SP |
1295 | if (keep_msg) { |
1296 | int keep_fd, keep_msg_len = strlen(keep_msg); | |
6e180cdc JH |
1297 | |
1298 | if (!keep_name) | |
1299 | keep_fd = odb_pack_keep(name, sizeof(name), sha1); | |
1300 | else | |
1301 | keep_fd = open(keep_name, O_RDWR|O_CREAT|O_EXCL, 0600); | |
1302 | ||
9ca4a201 NP |
1303 | if (keep_fd < 0) { |
1304 | if (errno != EEXIST) | |
c2b97ecf | 1305 | die_errno(_("cannot write keep file '%s'"), |
de983a0a | 1306 | keep_name ? keep_name : name); |
9ca4a201 NP |
1307 | } else { |
1308 | if (keep_msg_len > 0) { | |
1309 | write_or_die(keep_fd, keep_msg, keep_msg_len); | |
1310 | write_or_die(keep_fd, "\n", 1); | |
1311 | } | |
91c8d590 | 1312 | if (close(keep_fd) != 0) |
c2b97ecf | 1313 | die_errno(_("cannot close written keep file '%s'"), |
de983a0a | 1314 | keep_name ? keep_name : name); |
576162a4 | 1315 | report = "keep"; |
b8077709 | 1316 | } |
b8077709 SP |
1317 | } |
1318 | ||
e42797f5 NP |
1319 | if (final_pack_name != curr_pack_name) { |
1320 | if (!final_pack_name) { | |
1321 | snprintf(name, sizeof(name), "%s/pack/pack-%s.pack", | |
1322 | get_object_directory(), sha1_to_hex(sha1)); | |
1323 | final_pack_name = name; | |
1324 | } | |
1325 | if (move_temp_to_file(curr_pack_name, final_pack_name)) | |
c2b97ecf | 1326 | die(_("cannot store pack file")); |
fb8b1936 | 1327 | } else if (from_stdin) |
33b65030 | 1328 | chmod(final_pack_name, 0444); |
e42797f5 | 1329 | |
e42797f5 NP |
1330 | if (final_index_name != curr_index_name) { |
1331 | if (!final_index_name) { | |
1332 | snprintf(name, sizeof(name), "%s/pack/pack-%s.idx", | |
1333 | get_object_directory(), sha1_to_hex(sha1)); | |
1334 | final_index_name = name; | |
1335 | } | |
1336 | if (move_temp_to_file(curr_index_name, final_index_name)) | |
c2b97ecf | 1337 | die(_("cannot store index file")); |
fb8b1936 JH |
1338 | } else |
1339 | chmod(final_index_name, 0444); | |
576162a4 NP |
1340 | |
1341 | if (!from_stdin) { | |
1342 | printf("%s\n", sha1_to_hex(sha1)); | |
1343 | } else { | |
1344 | char buf[48]; | |
1345 | int len = snprintf(buf, sizeof(buf), "%s\t%s\n", | |
1346 | report, sha1_to_hex(sha1)); | |
d1b2ddc8 | 1347 | write_or_die(1, buf, len); |
576162a4 NP |
1348 | |
1349 | /* | |
1350 | * Let's just mimic git-unpack-objects here and write | |
1351 | * the last part of the input buffer to stdout. | |
1352 | */ | |
1353 | while (input_len) { | |
1354 | err = xwrite(1, input_buffer + input_offset, input_len); | |
1355 | if (err <= 0) | |
1356 | break; | |
1357 | input_len -= err; | |
1358 | input_offset += err; | |
1359 | } | |
1360 | } | |
9cf6d335 SV |
1361 | } |
1362 | ||
ef90d6d4 | 1363 | static int git_index_pack_config(const char *k, const char *v, void *cb) |
4d00bda2 | 1364 | { |
ebcfb379 JH |
1365 | struct pack_idx_option *opts = cb; |
1366 | ||
4d00bda2 | 1367 | if (!strcmp(k, "pack.indexversion")) { |
ebcfb379 JH |
1368 | opts->version = git_config_int(k, v); |
1369 | if (opts->version > 2) | |
f350df42 | 1370 | die(_("bad pack.indexversion=%"PRIu32), opts->version); |
4d00bda2 NP |
1371 | return 0; |
1372 | } | |
b8a2486f NTND |
1373 | if (!strcmp(k, "pack.threads")) { |
1374 | nr_threads = git_config_int(k, v); | |
1375 | if (nr_threads < 0) | |
f350df42 | 1376 | die(_("invalid number of threads specified (%d)"), |
b8a2486f NTND |
1377 | nr_threads); |
1378 | #ifdef NO_PTHREADS | |
1379 | if (nr_threads != 1) | |
f350df42 | 1380 | warning(_("no threads support, ignoring %s"), k); |
b8a2486f NTND |
1381 | nr_threads = 1; |
1382 | #endif | |
1383 | return 0; | |
1384 | } | |
ef90d6d4 | 1385 | return git_default_config(k, v, cb); |
4d00bda2 NP |
1386 | } |
1387 | ||
3c9fc074 JH |
1388 | static int cmp_uint32(const void *a_, const void *b_) |
1389 | { | |
1390 | uint32_t a = *((uint32_t *)a_); | |
1391 | uint32_t b = *((uint32_t *)b_); | |
1392 | ||
1393 | return (a < b) ? -1 : (a != b); | |
1394 | } | |
1395 | ||
1396 | static void read_v2_anomalous_offsets(struct packed_git *p, | |
1397 | struct pack_idx_option *opts) | |
1398 | { | |
1399 | const uint32_t *idx1, *idx2; | |
1400 | uint32_t i; | |
1401 | ||
1402 | /* The address of the 4-byte offset table */ | |
1403 | idx1 = (((const uint32_t *)p->index_data) | |
1404 | + 2 /* 8-byte header */ | |
1405 | + 256 /* fan out */ | |
1406 | + 5 * p->num_objects /* 20-byte SHA-1 table */ | |
1407 | + p->num_objects /* CRC32 table */ | |
1408 | ); | |
1409 | ||
1410 | /* The address of the 8-byte offset table */ | |
1411 | idx2 = idx1 + p->num_objects; | |
1412 | ||
1413 | for (i = 0; i < p->num_objects; i++) { | |
1414 | uint32_t off = ntohl(idx1[i]); | |
1415 | if (!(off & 0x80000000)) | |
1416 | continue; | |
1417 | off = off & 0x7fffffff; | |
1418 | if (idx2[off * 2]) | |
1419 | continue; | |
1420 | /* | |
1421 | * The real offset is ntohl(idx2[off * 2]) in high 4 | |
1422 | * octets, and ntohl(idx2[off * 2 + 1]) in low 4 | |
1423 | * octets. But idx2[off * 2] is Zero!!! | |
1424 | */ | |
1425 | ALLOC_GROW(opts->anomaly, opts->anomaly_nr + 1, opts->anomaly_alloc); | |
1426 | opts->anomaly[opts->anomaly_nr++] = ntohl(idx2[off * 2 + 1]); | |
1427 | } | |
1428 | ||
1429 | if (1 < opts->anomaly_nr) | |
1430 | qsort(opts->anomaly, opts->anomaly_nr, sizeof(uint32_t), cmp_uint32); | |
1431 | } | |
1432 | ||
e337a04d JH |
1433 | static void read_idx_option(struct pack_idx_option *opts, const char *pack_name) |
1434 | { | |
1435 | struct packed_git *p = add_packed_git(pack_name, strlen(pack_name), 1); | |
1436 | ||
1437 | if (!p) | |
c2b97ecf | 1438 | die(_("Cannot open existing pack file '%s'"), pack_name); |
e337a04d | 1439 | if (open_pack_index(p)) |
c2b97ecf | 1440 | die(_("Cannot open existing pack idx file for '%s'"), pack_name); |
e337a04d JH |
1441 | |
1442 | /* Read the attributes from the existing idx file */ | |
1443 | opts->version = p->index_version; | |
1444 | ||
3c9fc074 JH |
1445 | if (opts->version == 2) |
1446 | read_v2_anomalous_offsets(p, opts); | |
1447 | ||
e337a04d JH |
1448 | /* |
1449 | * Get rid of the idx file as we do not need it anymore. | |
1450 | * NEEDSWORK: extract this bit from free_pack_by_name() in | |
1451 | * sha1_file.c, perhaps? It shouldn't matter very much as we | |
1452 | * know we haven't installed this pack (hence we never have | |
1453 | * read anything from it). | |
1454 | */ | |
1455 | close_pack_index(p); | |
1456 | free(p); | |
1457 | } | |
1458 | ||
38a45561 JH |
1459 | static void show_pack_info(int stat_only) |
1460 | { | |
d1a0ed18 JH |
1461 | int i, baseobjects = nr_objects - nr_deltas; |
1462 | unsigned long *chain_histogram = NULL; | |
1463 | ||
1464 | if (deepest_delta) | |
1465 | chain_histogram = xcalloc(deepest_delta, sizeof(unsigned long)); | |
1466 | ||
38a45561 JH |
1467 | for (i = 0; i < nr_objects; i++) { |
1468 | struct object_entry *obj = &objects[i]; | |
1469 | ||
d1a0ed18 JH |
1470 | if (is_delta_type(obj->type)) |
1471 | chain_histogram[obj->delta_depth - 1]++; | |
38a45561 JH |
1472 | if (stat_only) |
1473 | continue; | |
1474 | printf("%s %-6s %lu %lu %"PRIuMAX, | |
1475 | sha1_to_hex(obj->idx.sha1), | |
1476 | typename(obj->real_type), obj->size, | |
1477 | (unsigned long)(obj[1].idx.offset - obj->idx.offset), | |
1478 | (uintmax_t)obj->idx.offset); | |
1479 | if (is_delta_type(obj->type)) { | |
1480 | struct object_entry *bobj = &objects[obj->base_object_no]; | |
1481 | printf(" %u %s", obj->delta_depth, sha1_to_hex(bobj->idx.sha1)); | |
1482 | } | |
1483 | putchar('\n'); | |
1484 | } | |
d1a0ed18 JH |
1485 | |
1486 | if (baseobjects) | |
c2b97ecf NTND |
1487 | printf_ln(Q_("non delta: %d object", |
1488 | "non delta: %d objects", | |
1489 | baseobjects), | |
1490 | baseobjects); | |
d1a0ed18 JH |
1491 | for (i = 0; i < deepest_delta; i++) { |
1492 | if (!chain_histogram[i]) | |
1493 | continue; | |
c2b97ecf NTND |
1494 | printf_ln(Q_("chain length = %d: %lu object", |
1495 | "chain length = %d: %lu objects", | |
1496 | chain_histogram[i]), | |
1497 | i + 1, | |
1498 | chain_histogram[i]); | |
d1a0ed18 | 1499 | } |
38a45561 JH |
1500 | } |
1501 | ||
3bb72562 | 1502 | int cmd_index_pack(int argc, const char **argv, const char *prefix) |
9cf6d335 | 1503 | { |
3aba2fdd | 1504 | int i, fix_thin_pack = 0, verify = 0, stat_only = 0; |
39539495 | 1505 | const char *curr_index; |
3bb72562 | 1506 | const char *index_name = NULL, *pack_name = NULL; |
b8077709 | 1507 | const char *keep_name = NULL, *keep_msg = NULL; |
592ce208 JK |
1508 | struct strbuf index_name_buf = STRBUF_INIT, |
1509 | keep_name_buf = STRBUF_INIT; | |
aa7e44bf | 1510 | struct pack_idx_entry **idx_objects; |
ebcfb379 | 1511 | struct pack_idx_option opts; |
8522148f | 1512 | unsigned char pack_sha1[20]; |
c6807a40 | 1513 | unsigned foreign_nr = 1; /* zero is a "good" value, assume bad */ |
9cf6d335 | 1514 | |
99caeed0 JN |
1515 | if (argc == 2 && !strcmp(argv[1], "-h")) |
1516 | usage(index_pack_usage); | |
1517 | ||
afc711b8 | 1518 | check_replace_refs = 0; |
6e2a09d2 | 1519 | |
ebcfb379 JH |
1520 | reset_pack_idx_option(&opts); |
1521 | git_config(git_index_pack_config, &opts); | |
3f8099fc | 1522 | if (prefix && chdir(prefix)) |
c2b97ecf | 1523 | die(_("Cannot come back to cwd")); |
4d00bda2 | 1524 | |
9cf6d335 | 1525 | for (i = 1; i < argc; i++) { |
3bb72562 | 1526 | const char *arg = argv[i]; |
9cf6d335 SV |
1527 | |
1528 | if (*arg == '-') { | |
e42797f5 NP |
1529 | if (!strcmp(arg, "--stdin")) { |
1530 | from_stdin = 1; | |
636171cb NP |
1531 | } else if (!strcmp(arg, "--fix-thin")) { |
1532 | fix_thin_pack = 1; | |
0153be05 MK |
1533 | } else if (!strcmp(arg, "--strict")) { |
1534 | strict = 1; | |
c6807a40 NTND |
1535 | do_fsck_object = 1; |
1536 | } else if (!strcmp(arg, "--check-self-contained-and-connected")) { | |
1537 | strict = 1; | |
1538 | check_self_contained_and_connected = 1; | |
e337a04d JH |
1539 | } else if (!strcmp(arg, "--verify")) { |
1540 | verify = 1; | |
38a45561 JH |
1541 | } else if (!strcmp(arg, "--verify-stat")) { |
1542 | verify = 1; | |
3aba2fdd | 1543 | show_stat = 1; |
38a45561 JH |
1544 | } else if (!strcmp(arg, "--verify-stat-only")) { |
1545 | verify = 1; | |
3aba2fdd | 1546 | show_stat = 1; |
38a45561 | 1547 | stat_only = 1; |
b8077709 SP |
1548 | } else if (!strcmp(arg, "--keep")) { |
1549 | keep_msg = ""; | |
59556548 | 1550 | } else if (starts_with(arg, "--keep=")) { |
b8077709 | 1551 | keep_msg = arg + 7; |
59556548 | 1552 | } else if (starts_with(arg, "--threads=")) { |
b8a2486f NTND |
1553 | char *end; |
1554 | nr_threads = strtoul(arg+10, &end, 0); | |
1555 | if (!arg[10] || *end || nr_threads < 0) | |
1556 | usage(index_pack_usage); | |
1557 | #ifdef NO_PTHREADS | |
1558 | if (nr_threads != 1) | |
f350df42 NTND |
1559 | warning(_("no threads support, " |
1560 | "ignoring %s"), arg); | |
b8a2486f NTND |
1561 | nr_threads = 1; |
1562 | #endif | |
59556548 | 1563 | } else if (starts_with(arg, "--pack_header=")) { |
bed006fb NP |
1564 | struct pack_header *hdr; |
1565 | char *c; | |
1566 | ||
1567 | hdr = (struct pack_header *)input_buffer; | |
1568 | hdr->hdr_signature = htonl(PACK_SIGNATURE); | |
1569 | hdr->hdr_version = htonl(strtoul(arg + 14, &c, 10)); | |
1570 | if (*c != ',') | |
c2b97ecf | 1571 | die(_("bad %s"), arg); |
bed006fb NP |
1572 | hdr->hdr_entries = htonl(strtoul(c + 1, &c, 10)); |
1573 | if (*c) | |
c2b97ecf | 1574 | die(_("bad %s"), arg); |
bed006fb | 1575 | input_len = sizeof(*hdr); |
3c9af366 NP |
1576 | } else if (!strcmp(arg, "-v")) { |
1577 | verbose = 1; | |
e42797f5 | 1578 | } else if (!strcmp(arg, "-o")) { |
9cf6d335 SV |
1579 | if (index_name || (i+1) >= argc) |
1580 | usage(index_pack_usage); | |
1581 | index_name = argv[++i]; | |
59556548 | 1582 | } else if (starts_with(arg, "--index-version=")) { |
4ba7d711 | 1583 | char *c; |
ebcfb379 JH |
1584 | opts.version = strtoul(arg + 16, &c, 10); |
1585 | if (opts.version > 2) | |
c2b97ecf | 1586 | die(_("bad %s"), arg); |
4ba7d711 | 1587 | if (*c == ',') |
ebcfb379 JH |
1588 | opts.off32_limit = strtoul(c+1, &c, 0); |
1589 | if (*c || opts.off32_limit & 0x80000000) | |
c2b97ecf | 1590 | die(_("bad %s"), arg); |
9cf6d335 SV |
1591 | } else |
1592 | usage(index_pack_usage); | |
1593 | continue; | |
1594 | } | |
1595 | ||
1596 | if (pack_name) | |
1597 | usage(index_pack_usage); | |
1598 | pack_name = arg; | |
1599 | } | |
1600 | ||
e42797f5 | 1601 | if (!pack_name && !from_stdin) |
9cf6d335 | 1602 | usage(index_pack_usage); |
636171cb | 1603 | if (fix_thin_pack && !from_stdin) |
c2b97ecf | 1604 | die(_("--fix-thin cannot be used without --stdin")); |
e42797f5 | 1605 | if (!index_name && pack_name) { |
592ce208 JK |
1606 | size_t len; |
1607 | if (!strip_suffix(pack_name, ".pack", &len)) | |
c2b97ecf | 1608 | die(_("packfile name '%s' does not end with '.pack'"), |
9cf6d335 | 1609 | pack_name); |
592ce208 JK |
1610 | strbuf_add(&index_name_buf, pack_name, len); |
1611 | strbuf_addstr(&index_name_buf, ".idx"); | |
1612 | index_name = index_name_buf.buf; | |
9cf6d335 | 1613 | } |
b8077709 | 1614 | if (keep_msg && !keep_name && pack_name) { |
592ce208 JK |
1615 | size_t len; |
1616 | if (!strip_suffix(pack_name, ".pack", &len)) | |
c2b97ecf | 1617 | die(_("packfile name '%s' does not end with '.pack'"), |
b8077709 | 1618 | pack_name); |
592ce208 JK |
1619 | strbuf_add(&keep_name_buf, pack_name, len); |
1620 | strbuf_addstr(&keep_name_buf, ".idx"); | |
1621 | keep_name = keep_name_buf.buf; | |
b8077709 | 1622 | } |
e337a04d JH |
1623 | if (verify) { |
1624 | if (!index_name) | |
c2b97ecf | 1625 | die(_("--verify with no packfile name given")); |
e337a04d | 1626 | read_idx_option(&opts, index_name); |
68be2fea | 1627 | opts.flags |= WRITE_IDX_VERIFY | WRITE_IDX_STRICT; |
e337a04d | 1628 | } |
68be2fea JH |
1629 | if (strict) |
1630 | opts.flags |= WRITE_IDX_STRICT; | |
9cf6d335 | 1631 | |
b8a2486f NTND |
1632 | #ifndef NO_PTHREADS |
1633 | if (!nr_threads) { | |
1634 | nr_threads = online_cpus(); | |
1635 | /* An experiment showed that more threads does not mean faster */ | |
1636 | if (nr_threads > 3) | |
1637 | nr_threads = 3; | |
1638 | } | |
1639 | #endif | |
1640 | ||
e42797f5 | 1641 | curr_pack = open_pack_file(pack_name); |
9cf6d335 | 1642 | parse_pack_header(); |
38a45561 JH |
1643 | objects = xcalloc(nr_objects + 1, sizeof(struct object_entry)); |
1644 | deltas = xcalloc(nr_objects, sizeof(struct delta_entry)); | |
8522148f | 1645 | parse_pack_objects(pack_sha1); |
5272f755 NTND |
1646 | resolve_deltas(); |
1647 | conclude_pack(fix_thin_pack, curr_pack, pack_sha1); | |
9cf6d335 | 1648 | free(deltas); |
0153be05 | 1649 | if (strict) |
c6807a40 | 1650 | foreign_nr = check_objects(); |
aa7e44bf | 1651 | |
3aba2fdd | 1652 | if (show_stat) |
38a45561 JH |
1653 | show_pack_info(stat_only); |
1654 | ||
aa7e44bf GB |
1655 | idx_objects = xmalloc((nr_objects) * sizeof(struct pack_idx_entry *)); |
1656 | for (i = 0; i < nr_objects; i++) | |
1657 | idx_objects[i] = &objects[i].idx; | |
ebcfb379 | 1658 | curr_index = write_idx_file(index_name, idx_objects, nr_objects, &opts, pack_sha1); |
aa7e44bf GB |
1659 | free(idx_objects); |
1660 | ||
e337a04d JH |
1661 | if (!verify) |
1662 | final(pack_name, curr_pack, | |
1663 | index_name, curr_index, | |
1664 | keep_name, keep_msg, | |
1665 | pack_sha1); | |
1666 | else | |
1667 | close(input_fd); | |
9cf6d335 | 1668 | free(objects); |
592ce208 JK |
1669 | strbuf_release(&index_name_buf); |
1670 | strbuf_release(&keep_name_buf); | |
c85228ed | 1671 | if (pack_name == NULL) |
3bb72562 | 1672 | free((void *) curr_pack); |
c85228ed | 1673 | if (index_name == NULL) |
3bb72562 | 1674 | free((void *) curr_index); |
9cf6d335 | 1675 | |
c6807a40 NTND |
1676 | /* |
1677 | * Let the caller know this pack is not self contained | |
1678 | */ | |
1679 | if (check_self_contained_and_connected && foreign_nr) | |
1680 | return 1; | |
1681 | ||
9cf6d335 SV |
1682 | return 0; |
1683 | } |