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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 | ||
c0f86547 JH |
43 | #if !defined(NO_PTHREADS) && defined(NO_THREAD_SAFE_PREAD) |
44 | /* pread() emulation is not thread-safe. Disable threading. */ | |
b038a610 NTND |
45 | #define NO_PTHREADS |
46 | #endif | |
47 | ||
b8a2486f NTND |
48 | struct thread_local { |
49 | #ifndef NO_PTHREADS | |
50 | pthread_t thread; | |
51 | #endif | |
52 | struct base_data *base_cache; | |
53 | size_t base_cache_used; | |
54 | }; | |
55 | ||
3c552873 NP |
56 | /* |
57 | * Even if sizeof(union delta_base) == 24 on 64-bit archs, we really want | |
58 | * to memcmp() only the first 20 bytes. | |
59 | */ | |
60 | #define UNION_BASE_SZ 20 | |
61 | ||
0153be05 MK |
62 | #define FLAG_LINK (1u<<20) |
63 | #define FLAG_CHECKED (1u<<21) | |
64 | ||
9cba13ca | 65 | struct delta_entry { |
53dda6ff | 66 | union delta_base base; |
636171cb | 67 | int obj_no; |
9cf6d335 SV |
68 | }; |
69 | ||
9cf6d335 SV |
70 | static struct object_entry *objects; |
71 | static struct delta_entry *deltas; | |
b8a2486f | 72 | static struct thread_local nothread_data; |
9cf6d335 SV |
73 | static int nr_objects; |
74 | static int nr_deltas; | |
636171cb | 75 | static int nr_resolved_deltas; |
b8a2486f | 76 | static int nr_threads; |
9cf6d335 | 77 | |
e42797f5 | 78 | static int from_stdin; |
0153be05 | 79 | static int strict; |
3c9af366 | 80 | static int verbose; |
3aba2fdd | 81 | static int show_stat; |
3c9af366 | 82 | |
dc6a0757 | 83 | static struct progress *progress; |
e42797f5 | 84 | |
2d477051 NP |
85 | /* We always read in 4kB chunks. */ |
86 | static unsigned char input_buffer[4096]; | |
d7dd0223 NP |
87 | static unsigned int input_offset, input_len; |
88 | static off_t consumed_bytes; | |
d1a0ed18 | 89 | static unsigned deepest_delta; |
9126f009 | 90 | static git_SHA_CTX input_ctx; |
ee5743ce | 91 | static uint32_t input_crc32; |
6d2fa7f1 | 92 | static int input_fd, output_fd, pack_fd; |
2d477051 | 93 | |
b8a2486f NTND |
94 | #ifndef NO_PTHREADS |
95 | ||
96 | static struct thread_local *thread_data; | |
97 | static int nr_dispatched; | |
98 | static int threads_active; | |
99 | ||
100 | static pthread_mutex_t read_mutex; | |
101 | #define read_lock() lock_mutex(&read_mutex) | |
102 | #define read_unlock() unlock_mutex(&read_mutex) | |
103 | ||
104 | static pthread_mutex_t counter_mutex; | |
105 | #define counter_lock() lock_mutex(&counter_mutex) | |
106 | #define counter_unlock() unlock_mutex(&counter_mutex) | |
107 | ||
108 | static pthread_mutex_t work_mutex; | |
109 | #define work_lock() lock_mutex(&work_mutex) | |
110 | #define work_unlock() unlock_mutex(&work_mutex) | |
111 | ||
3aba2fdd NTND |
112 | static pthread_mutex_t deepest_delta_mutex; |
113 | #define deepest_delta_lock() lock_mutex(&deepest_delta_mutex) | |
114 | #define deepest_delta_unlock() unlock_mutex(&deepest_delta_mutex) | |
115 | ||
b8a2486f NTND |
116 | static pthread_key_t key; |
117 | ||
118 | static inline void lock_mutex(pthread_mutex_t *mutex) | |
119 | { | |
120 | if (threads_active) | |
121 | pthread_mutex_lock(mutex); | |
122 | } | |
123 | ||
124 | static inline void unlock_mutex(pthread_mutex_t *mutex) | |
125 | { | |
126 | if (threads_active) | |
127 | pthread_mutex_unlock(mutex); | |
128 | } | |
129 | ||
130 | /* | |
131 | * Mutex and conditional variable can't be statically-initialized on Windows. | |
132 | */ | |
133 | static void init_thread(void) | |
134 | { | |
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)); | |
142 | threads_active = 1; | |
143 | } | |
144 | ||
145 | static void cleanup_thread(void) | |
146 | { | |
147 | if (!threads_active) | |
148 | return; | |
149 | threads_active = 0; | |
150 | pthread_mutex_destroy(&read_mutex); | |
151 | pthread_mutex_destroy(&counter_mutex); | |
152 | pthread_mutex_destroy(&work_mutex); | |
3aba2fdd NTND |
153 | if (show_stat) |
154 | pthread_mutex_destroy(&deepest_delta_mutex); | |
b8a2486f NTND |
155 | pthread_key_delete(key); |
156 | free(thread_data); | |
157 | } | |
158 | ||
159 | #else | |
160 | ||
161 | #define read_lock() | |
162 | #define read_unlock() | |
163 | ||
164 | #define counter_lock() | |
165 | #define counter_unlock() | |
166 | ||
167 | #define work_lock() | |
168 | #define work_unlock() | |
169 | ||
3aba2fdd NTND |
170 | #define deepest_delta_lock() |
171 | #define deepest_delta_unlock() | |
172 | ||
b8a2486f NTND |
173 | #endif |
174 | ||
175 | ||
0153be05 MK |
176 | static int mark_link(struct object *obj, int type, void *data) |
177 | { | |
178 | if (!obj) | |
179 | return -1; | |
180 | ||
181 | if (type != OBJ_ANY && obj->type != type) | |
c2b97ecf | 182 | die(_("object type mismatch at %s"), sha1_to_hex(obj->sha1)); |
0153be05 MK |
183 | |
184 | obj->flags |= FLAG_LINK; | |
185 | return 0; | |
186 | } | |
187 | ||
188 | /* The content of each linked object must have been checked | |
189 | or it must be already present in the object database */ | |
190 | static void check_object(struct object *obj) | |
191 | { | |
192 | if (!obj) | |
193 | return; | |
194 | ||
195 | if (!(obj->flags & FLAG_LINK)) | |
196 | return; | |
197 | ||
198 | if (!(obj->flags & FLAG_CHECKED)) { | |
199 | unsigned long size; | |
200 | int type = sha1_object_info(obj->sha1, &size); | |
201 | if (type != obj->type || type <= 0) | |
c2b97ecf | 202 | die(_("object of unexpected type")); |
0153be05 MK |
203 | obj->flags |= FLAG_CHECKED; |
204 | return; | |
205 | } | |
206 | } | |
207 | ||
208 | static void check_objects(void) | |
209 | { | |
210 | unsigned i, max; | |
211 | ||
212 | max = get_max_object_index(); | |
213 | for (i = 0; i < max; i++) | |
214 | check_object(get_indexed_object(i)); | |
215 | } | |
216 | ||
217 | ||
636171cb | 218 | /* Discard current buffer used content. */ |
a6e8a767 | 219 | static void flush(void) |
636171cb NP |
220 | { |
221 | if (input_offset) { | |
222 | if (output_fd >= 0) | |
223 | write_or_die(output_fd, input_buffer, input_offset); | |
9126f009 | 224 | git_SHA1_Update(&input_ctx, input_buffer, input_offset); |
554a2636 | 225 | memmove(input_buffer, input_buffer + input_offset, input_len); |
636171cb NP |
226 | input_offset = 0; |
227 | } | |
228 | } | |
229 | ||
2d477051 NP |
230 | /* |
231 | * Make sure at least "min" bytes are available in the buffer, and | |
232 | * return the pointer to the buffer. | |
233 | */ | |
b89c4e93 | 234 | static void *fill(int min) |
9cf6d335 | 235 | { |
2d477051 NP |
236 | if (min <= input_len) |
237 | return input_buffer + input_offset; | |
238 | if (min > sizeof(input_buffer)) | |
c2b97ecf NTND |
239 | die(Q_("cannot fill %d byte", |
240 | "cannot fill %d bytes", | |
241 | min), | |
242 | min); | |
636171cb | 243 | flush(); |
2d477051 | 244 | do { |
8a912bcb | 245 | ssize_t ret = xread(input_fd, input_buffer + input_len, |
2d477051 NP |
246 | sizeof(input_buffer) - input_len); |
247 | if (ret <= 0) { | |
248 | if (!ret) | |
c2b97ecf NTND |
249 | die(_("early EOF")); |
250 | die_errno(_("read error on input")); | |
2d477051 NP |
251 | } |
252 | input_len += ret; | |
218558af NP |
253 | if (from_stdin) |
254 | display_throughput(progress, consumed_bytes + input_len); | |
2d477051 NP |
255 | } while (input_len < min); |
256 | return input_buffer; | |
257 | } | |
258 | ||
259 | static void use(int bytes) | |
260 | { | |
261 | if (bytes > input_len) | |
c2b97ecf | 262 | die(_("used more bytes than were available")); |
ee5743ce | 263 | input_crc32 = crc32(input_crc32, input_buffer + input_offset, bytes); |
2d477051 NP |
264 | input_len -= bytes; |
265 | input_offset += bytes; | |
d7dd0223 NP |
266 | |
267 | /* make sure off_t is sufficiently large not to wrap */ | |
c03c8315 | 268 | if (signed_add_overflows(consumed_bytes, bytes)) |
c2b97ecf | 269 | die(_("pack too large for current definition of off_t")); |
2d477051 NP |
270 | consumed_bytes += bytes; |
271 | } | |
9cf6d335 | 272 | |
3bb72562 | 273 | static const char *open_pack_file(const char *pack_name) |
2d477051 | 274 | { |
e42797f5 NP |
275 | if (from_stdin) { |
276 | input_fd = 0; | |
277 | if (!pack_name) { | |
ab1900a3 ÆAB |
278 | static char tmp_file[PATH_MAX]; |
279 | output_fd = odb_mkstemp(tmp_file, sizeof(tmp_file), | |
6e180cdc | 280 | "pack/tmp_pack_XXXXXX"); |
ab1900a3 | 281 | pack_name = xstrdup(tmp_file); |
e42797f5 NP |
282 | } else |
283 | output_fd = open(pack_name, O_CREAT|O_EXCL|O_RDWR, 0600); | |
284 | if (output_fd < 0) | |
c2b97ecf | 285 | die_errno(_("unable to create '%s'"), pack_name); |
6d2fa7f1 | 286 | pack_fd = output_fd; |
e42797f5 NP |
287 | } else { |
288 | input_fd = open(pack_name, O_RDONLY); | |
289 | if (input_fd < 0) | |
c2b97ecf | 290 | die_errno(_("cannot open packfile '%s'"), pack_name); |
e42797f5 | 291 | output_fd = -1; |
6d2fa7f1 | 292 | pack_fd = input_fd; |
e42797f5 | 293 | } |
9126f009 | 294 | git_SHA1_Init(&input_ctx); |
e42797f5 | 295 | return pack_name; |
9cf6d335 SV |
296 | } |
297 | ||
298 | static void parse_pack_header(void) | |
299 | { | |
2d477051 | 300 | struct pack_header *hdr = fill(sizeof(struct pack_header)); |
9cf6d335 SV |
301 | |
302 | /* Header consistency check */ | |
9cf6d335 | 303 | if (hdr->hdr_signature != htonl(PACK_SIGNATURE)) |
c2b97ecf | 304 | die(_("pack signature mismatch")); |
d60fc1c8 | 305 | if (!pack_version_ok(hdr->hdr_version)) |
6e1c2344 RJ |
306 | die("pack version %"PRIu32" unsupported", |
307 | ntohl(hdr->hdr_version)); | |
9cf6d335 SV |
308 | |
309 | nr_objects = ntohl(hdr->hdr_entries); | |
2d477051 | 310 | use(sizeof(struct pack_header)); |
9cf6d335 SV |
311 | } |
312 | ||
a4f3131c EFL |
313 | static NORETURN void bad_object(unsigned long offset, const char *format, |
314 | ...) __attribute__((format (printf, 2, 3))); | |
9cf6d335 | 315 | |
c2e86add | 316 | static NORETURN void bad_object(unsigned long offset, const char *format, ...) |
9cf6d335 SV |
317 | { |
318 | va_list params; | |
319 | char buf[1024]; | |
320 | ||
321 | va_start(params, format); | |
322 | vsnprintf(buf, sizeof(buf), format, params); | |
323 | va_end(params); | |
c2b97ecf | 324 | die(_("pack has bad object at offset %lu: %s"), offset, buf); |
9cf6d335 SV |
325 | } |
326 | ||
b8a2486f NTND |
327 | static inline struct thread_local *get_thread_data(void) |
328 | { | |
329 | #ifndef NO_PTHREADS | |
330 | if (threads_active) | |
331 | return pthread_getspecific(key); | |
332 | assert(!threads_active && | |
333 | "This should only be reached when all threads are gone"); | |
334 | #endif | |
335 | return ¬hread_data; | |
336 | } | |
337 | ||
338 | #ifndef NO_PTHREADS | |
339 | static void set_thread_data(struct thread_local *data) | |
340 | { | |
341 | if (threads_active) | |
342 | pthread_setspecific(key, data); | |
343 | } | |
344 | #endif | |
345 | ||
2baad220 NTND |
346 | static struct base_data *alloc_base_data(void) |
347 | { | |
348 | struct base_data *base = xmalloc(sizeof(struct base_data)); | |
349 | memset(base, 0, sizeof(*base)); | |
350 | base->ref_last = -1; | |
351 | base->ofs_last = -1; | |
352 | return base; | |
353 | } | |
354 | ||
6a87ed97 NP |
355 | static void free_base_data(struct base_data *c) |
356 | { | |
357 | if (c->data) { | |
358 | free(c->data); | |
359 | c->data = NULL; | |
b8a2486f | 360 | get_thread_data()->base_cache_used -= c->size; |
6a87ed97 NP |
361 | } |
362 | } | |
363 | ||
92392b4a SP |
364 | static void prune_base_data(struct base_data *retain) |
365 | { | |
8e24cbae | 366 | struct base_data *b; |
b8a2486f NTND |
367 | struct thread_local *data = get_thread_data(); |
368 | for (b = data->base_cache; | |
369 | data->base_cache_used > delta_base_cache_limit && b; | |
92392b4a | 370 | b = b->child) { |
6a87ed97 NP |
371 | if (b->data && b != retain) |
372 | free_base_data(b); | |
92392b4a SP |
373 | } |
374 | } | |
375 | ||
4a438cab SP |
376 | static void link_base_data(struct base_data *base, struct base_data *c) |
377 | { | |
378 | if (base) | |
379 | base->child = c; | |
380 | else | |
b8a2486f | 381 | get_thread_data()->base_cache = c; |
4a438cab SP |
382 | |
383 | c->base = base; | |
384 | c->child = NULL; | |
9441b61d | 385 | if (c->data) |
b8a2486f | 386 | get_thread_data()->base_cache_used += c->size; |
92392b4a | 387 | prune_base_data(c); |
4a438cab SP |
388 | } |
389 | ||
390 | static void unlink_base_data(struct base_data *c) | |
391 | { | |
392 | struct base_data *base = c->base; | |
393 | if (base) | |
394 | base->child = NULL; | |
395 | else | |
b8a2486f | 396 | get_thread_data()->base_cache = NULL; |
6a87ed97 | 397 | free_base_data(c); |
4a438cab SP |
398 | } |
399 | ||
681b07de NTND |
400 | static int is_delta_type(enum object_type type) |
401 | { | |
402 | return (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA); | |
403 | } | |
404 | ||
405 | static void *unpack_entry_data(unsigned long offset, unsigned long size, | |
406 | enum object_type type, unsigned char *sha1) | |
9cf6d335 | 407 | { |
9ec2dde9 | 408 | static char fixed_buf[8192]; |
7ce4721a | 409 | int status; |
ef49a7a0 | 410 | git_zstream stream; |
9ec2dde9 | 411 | void *buf; |
681b07de NTND |
412 | git_SHA_CTX c; |
413 | char hdr[32]; | |
414 | int hdrlen; | |
415 | ||
416 | if (!is_delta_type(type)) { | |
417 | hdrlen = sprintf(hdr, "%s %lu", typename(type), size) + 1; | |
418 | git_SHA1_Init(&c); | |
419 | git_SHA1_Update(&c, hdr, hdrlen); | |
420 | } else | |
421 | sha1 = NULL; | |
9ec2dde9 NTND |
422 | if (type == OBJ_BLOB && size > big_file_threshold) |
423 | buf = fixed_buf; | |
424 | else | |
425 | buf = xmalloc(size); | |
9cf6d335 SV |
426 | |
427 | memset(&stream, 0, sizeof(stream)); | |
7ce4721a | 428 | git_inflate_init(&stream); |
9cf6d335 | 429 | stream.next_out = buf; |
9ec2dde9 | 430 | stream.avail_out = buf == fixed_buf ? sizeof(fixed_buf) : size; |
9cf6d335 | 431 | |
7ce4721a | 432 | do { |
681b07de | 433 | unsigned char *last_out = stream.next_out; |
2d477051 NP |
434 | stream.next_in = fill(1); |
435 | stream.avail_in = input_len; | |
7ce4721a NP |
436 | status = git_inflate(&stream, 0); |
437 | use(input_len - stream.avail_in); | |
681b07de NTND |
438 | if (sha1) |
439 | git_SHA1_Update(&c, last_out, stream.next_out - last_out); | |
9ec2dde9 NTND |
440 | if (buf == fixed_buf) { |
441 | stream.next_out = buf; | |
442 | stream.avail_out = sizeof(fixed_buf); | |
443 | } | |
7ce4721a NP |
444 | } while (status == Z_OK); |
445 | if (stream.total_out != size || status != Z_STREAM_END) | |
c2b97ecf | 446 | bad_object(offset, _("inflate returned %d"), status); |
39c68542 | 447 | git_inflate_end(&stream); |
681b07de NTND |
448 | if (sha1) |
449 | git_SHA1_Final(sha1, &c); | |
9ec2dde9 | 450 | return buf == fixed_buf ? NULL : buf; |
9cf6d335 SV |
451 | } |
452 | ||
681b07de NTND |
453 | static void *unpack_raw_entry(struct object_entry *obj, |
454 | union delta_base *delta_base, | |
455 | unsigned char *sha1) | |
9cf6d335 | 456 | { |
48fb7deb LT |
457 | unsigned char *p; |
458 | unsigned long size, c; | |
d7dd0223 | 459 | off_t base_offset; |
9cf6d335 | 460 | unsigned shift; |
ee5743ce | 461 | void *data; |
9cf6d335 | 462 | |
aa7e44bf | 463 | obj->idx.offset = consumed_bytes; |
1e4cd68c | 464 | input_crc32 = crc32(0, NULL, 0); |
2d477051 NP |
465 | |
466 | p = fill(1); | |
467 | c = *p; | |
468 | use(1); | |
469 | obj->type = (c >> 4) & 7; | |
9cf6d335 SV |
470 | size = (c & 15); |
471 | shift = 4; | |
472 | while (c & 0x80) { | |
2d477051 NP |
473 | p = fill(1); |
474 | c = *p; | |
475 | use(1); | |
48fb7deb | 476 | size += (c & 0x7f) << shift; |
9cf6d335 SV |
477 | shift += 7; |
478 | } | |
2d477051 | 479 | obj->size = size; |
9cf6d335 | 480 | |
2d477051 | 481 | switch (obj->type) { |
eb32d236 | 482 | case OBJ_REF_DELTA: |
2d477051 NP |
483 | hashcpy(delta_base->sha1, fill(20)); |
484 | use(20); | |
53dda6ff NP |
485 | break; |
486 | case OBJ_OFS_DELTA: | |
487 | memset(delta_base, 0, sizeof(*delta_base)); | |
2d477051 NP |
488 | p = fill(1); |
489 | c = *p; | |
490 | use(1); | |
53dda6ff NP |
491 | base_offset = c & 127; |
492 | while (c & 128) { | |
493 | base_offset += 1; | |
8723f216 | 494 | if (!base_offset || MSB(base_offset, 7)) |
c2b97ecf | 495 | bad_object(obj->idx.offset, _("offset value overflow for delta base object")); |
2d477051 NP |
496 | p = fill(1); |
497 | c = *p; | |
498 | use(1); | |
53dda6ff NP |
499 | base_offset = (base_offset << 7) + (c & 127); |
500 | } | |
aa7e44bf | 501 | delta_base->offset = obj->idx.offset - base_offset; |
d8f32556 | 502 | if (delta_base->offset <= 0 || delta_base->offset >= obj->idx.offset) |
c2b97ecf | 503 | bad_object(obj->idx.offset, _("delta base offset is out of bound")); |
53dda6ff | 504 | break; |
9cf6d335 SV |
505 | case OBJ_COMMIT: |
506 | case OBJ_TREE: | |
507 | case OBJ_BLOB: | |
508 | case OBJ_TAG: | |
9cf6d335 SV |
509 | break; |
510 | default: | |
c2b97ecf | 511 | bad_object(obj->idx.offset, _("unknown object type %d"), obj->type); |
9cf6d335 | 512 | } |
aa7e44bf | 513 | obj->hdr_size = consumed_bytes - obj->idx.offset; |
2d477051 | 514 | |
681b07de | 515 | data = unpack_entry_data(obj->idx.offset, obj->size, obj->type, sha1); |
aa7e44bf | 516 | obj->idx.crc32 = input_crc32; |
ee5743ce | 517 | return data; |
2d477051 NP |
518 | } |
519 | ||
8a2e163c NTND |
520 | static void *unpack_data(struct object_entry *obj, |
521 | int (*consume)(const unsigned char *, unsigned long, void *), | |
522 | void *cb_data) | |
2d477051 | 523 | { |
a91ef6e7 | 524 | off_t from = obj[0].idx.offset + obj[0].hdr_size; |
aa7e44bf | 525 | unsigned long len = obj[1].idx.offset - from; |
776ea370 | 526 | unsigned char *data, *inbuf; |
ef49a7a0 | 527 | git_zstream stream; |
776ea370 | 528 | int status; |
9cf6d335 | 529 | |
8a2e163c | 530 | data = xmalloc(consume ? 64*1024 : obj->size); |
776ea370 NP |
531 | inbuf = xmalloc((len < 64*1024) ? len : 64*1024); |
532 | ||
2d477051 | 533 | memset(&stream, 0, sizeof(stream)); |
776ea370 | 534 | git_inflate_init(&stream); |
2d477051 | 535 | stream.next_out = data; |
8a2e163c | 536 | stream.avail_out = consume ? 64*1024 : obj->size; |
776ea370 NP |
537 | |
538 | do { | |
539 | ssize_t n = (len < 64*1024) ? len : 64*1024; | |
540 | n = pread(pack_fd, inbuf, n, from); | |
541 | if (n < 0) | |
c2b97ecf | 542 | die_errno(_("cannot pread pack file")); |
776ea370 | 543 | if (!n) |
c2b97ecf NTND |
544 | die(Q_("premature end of pack file, %lu byte missing", |
545 | "premature end of pack file, %lu bytes missing", | |
546 | len), | |
547 | len); | |
776ea370 NP |
548 | from += n; |
549 | len -= n; | |
550 | stream.next_in = inbuf; | |
551 | stream.avail_in = n; | |
f8b09038 JK |
552 | if (!consume) |
553 | status = git_inflate(&stream, 0); | |
554 | else { | |
555 | do { | |
556 | status = git_inflate(&stream, 0); | |
557 | if (consume(data, stream.next_out - data, cb_data)) { | |
558 | free(inbuf); | |
559 | free(data); | |
560 | return NULL; | |
561 | } | |
562 | stream.next_out = data; | |
563 | stream.avail_out = 64*1024; | |
564 | } while (status == Z_OK && stream.avail_in); | |
8a2e163c | 565 | } |
776ea370 NP |
566 | } while (len && status == Z_OK && !stream.avail_in); |
567 | ||
568 | /* This has been inflated OK when first encountered, so... */ | |
569 | if (status != Z_STREAM_END || stream.total_out != obj->size) | |
c2b97ecf | 570 | die(_("serious inflate inconsistency")); |
776ea370 NP |
571 | |
572 | git_inflate_end(&stream); | |
573 | free(inbuf); | |
8a2e163c NTND |
574 | if (consume) { |
575 | free(data); | |
576 | data = NULL; | |
577 | } | |
9cf6d335 SV |
578 | return data; |
579 | } | |
580 | ||
8a2e163c NTND |
581 | static void *get_data_from_pack(struct object_entry *obj) |
582 | { | |
583 | return unpack_data(obj, NULL, NULL); | |
584 | } | |
585 | ||
7218a215 JH |
586 | static int compare_delta_bases(const union delta_base *base1, |
587 | const union delta_base *base2, | |
588 | enum object_type type1, | |
589 | enum object_type type2) | |
590 | { | |
591 | int cmp = type1 - type2; | |
592 | if (cmp) | |
593 | return cmp; | |
594 | return memcmp(base1, base2, UNION_BASE_SZ); | |
595 | } | |
596 | ||
597 | static int find_delta(const union delta_base *base, enum object_type type) | |
9cf6d335 SV |
598 | { |
599 | int first = 0, last = nr_deltas; | |
600 | ||
601 | while (first < last) { | |
602 | int next = (first + last) / 2; | |
603 | struct delta_entry *delta = &deltas[next]; | |
604 | int cmp; | |
605 | ||
7218a215 JH |
606 | cmp = compare_delta_bases(base, &delta->base, |
607 | type, objects[delta->obj_no].type); | |
9cf6d335 SV |
608 | if (!cmp) |
609 | return next; | |
610 | if (cmp < 0) { | |
611 | last = next; | |
612 | continue; | |
613 | } | |
614 | first = next+1; | |
615 | } | |
616 | return -first-1; | |
617 | } | |
618 | ||
6a87ed97 | 619 | static void find_delta_children(const union delta_base *base, |
7218a215 JH |
620 | int *first_index, int *last_index, |
621 | enum object_type type) | |
9cf6d335 | 622 | { |
7218a215 | 623 | int first = find_delta(base, type); |
9cf6d335 SV |
624 | int last = first; |
625 | int end = nr_deltas - 1; | |
626 | ||
6a87ed97 NP |
627 | if (first < 0) { |
628 | *first_index = 0; | |
629 | *last_index = -1; | |
630 | return; | |
631 | } | |
3c552873 | 632 | while (first > 0 && !memcmp(&deltas[first - 1].base, base, UNION_BASE_SZ)) |
9cf6d335 | 633 | --first; |
3c552873 | 634 | while (last < end && !memcmp(&deltas[last + 1].base, base, UNION_BASE_SZ)) |
9cf6d335 SV |
635 | ++last; |
636 | *first_index = first; | |
637 | *last_index = last; | |
9cf6d335 SV |
638 | } |
639 | ||
4614043c NTND |
640 | struct compare_data { |
641 | struct object_entry *entry; | |
642 | struct git_istream *st; | |
643 | unsigned char *buf; | |
644 | unsigned long buf_size; | |
645 | }; | |
646 | ||
647 | static int compare_objects(const unsigned char *buf, unsigned long size, | |
648 | void *cb_data) | |
649 | { | |
650 | struct compare_data *data = cb_data; | |
651 | ||
652 | if (data->buf_size < size) { | |
653 | free(data->buf); | |
654 | data->buf = xmalloc(size); | |
655 | data->buf_size = size; | |
656 | } | |
657 | ||
658 | while (size) { | |
659 | ssize_t len = read_istream(data->st, data->buf, size); | |
660 | if (len == 0) | |
661 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
662 | sha1_to_hex(data->entry->idx.sha1)); | |
663 | if (len < 0) | |
664 | die(_("unable to read %s"), | |
665 | sha1_to_hex(data->entry->idx.sha1)); | |
666 | if (memcmp(buf, data->buf, len)) | |
667 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
668 | sha1_to_hex(data->entry->idx.sha1)); | |
669 | size -= len; | |
670 | buf += len; | |
671 | } | |
672 | return 0; | |
673 | } | |
674 | ||
675 | static int check_collison(struct object_entry *entry) | |
676 | { | |
677 | struct compare_data data; | |
678 | enum object_type type; | |
679 | unsigned long size; | |
680 | ||
681 | if (entry->size <= big_file_threshold || entry->type != OBJ_BLOB) | |
682 | return -1; | |
683 | ||
684 | memset(&data, 0, sizeof(data)); | |
685 | data.entry = entry; | |
686 | data.st = open_istream(entry->idx.sha1, &type, &size, NULL); | |
687 | if (!data.st) | |
688 | return -1; | |
689 | if (size != entry->size || type != entry->type) | |
690 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
691 | sha1_to_hex(entry->idx.sha1)); | |
692 | unpack_data(entry, compare_objects, &data); | |
693 | close_istream(data.st); | |
694 | free(data.buf); | |
695 | return 0; | |
696 | } | |
697 | ||
9ec2dde9 NTND |
698 | static void sha1_object(const void *data, struct object_entry *obj_entry, |
699 | unsigned long size, enum object_type type, | |
700 | const unsigned char *sha1) | |
9cf6d335 | 701 | { |
9ec2dde9 | 702 | void *new_data = NULL; |
4614043c | 703 | int collision_test_needed; |
9ec2dde9 NTND |
704 | |
705 | assert(data || obj_entry); | |
706 | ||
b8a2486f | 707 | read_lock(); |
4614043c NTND |
708 | collision_test_needed = has_sha1_file(sha1); |
709 | read_unlock(); | |
710 | ||
711 | if (collision_test_needed && !data) { | |
712 | read_lock(); | |
713 | if (!check_collison(obj_entry)) | |
714 | collision_test_needed = 0; | |
715 | read_unlock(); | |
716 | } | |
717 | if (collision_test_needed) { | |
8685da42 NP |
718 | void *has_data; |
719 | enum object_type has_type; | |
720 | unsigned long has_size; | |
4614043c NTND |
721 | read_lock(); |
722 | has_type = sha1_object_info(sha1, &has_size); | |
723 | if (has_type != type || has_size != size) | |
724 | die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1)); | |
8685da42 | 725 | has_data = read_sha1_file(sha1, &has_type, &has_size); |
b8a2486f | 726 | read_unlock(); |
4614043c NTND |
727 | if (!data) |
728 | data = new_data = get_data_from_pack(obj_entry); | |
8685da42 | 729 | if (!has_data) |
c2b97ecf | 730 | die(_("cannot read existing object %s"), sha1_to_hex(sha1)); |
8685da42 NP |
731 | if (size != has_size || type != has_type || |
732 | memcmp(data, has_data, size) != 0) | |
c2b97ecf | 733 | die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1)); |
bbf4b41b | 734 | free(has_data); |
4614043c | 735 | } |
b8a2486f | 736 | |
0153be05 | 737 | if (strict) { |
b8a2486f | 738 | read_lock(); |
0153be05 MK |
739 | if (type == OBJ_BLOB) { |
740 | struct blob *blob = lookup_blob(sha1); | |
741 | if (blob) | |
742 | blob->object.flags |= FLAG_CHECKED; | |
743 | else | |
c2b97ecf | 744 | die(_("invalid blob object %s"), sha1_to_hex(sha1)); |
0153be05 MK |
745 | } else { |
746 | struct object *obj; | |
747 | int eaten; | |
748 | void *buf = (void *) data; | |
749 | ||
9ec2dde9 NTND |
750 | if (!buf) |
751 | buf = new_data = get_data_from_pack(obj_entry); | |
752 | ||
0153be05 MK |
753 | /* |
754 | * we do not need to free the memory here, as the | |
755 | * buf is deleted by the caller. | |
756 | */ | |
757 | obj = parse_object_buffer(sha1, type, size, buf, &eaten); | |
758 | if (!obj) | |
c2b97ecf | 759 | die(_("invalid %s"), typename(type)); |
0153be05 | 760 | if (fsck_object(obj, 1, fsck_error_function)) |
c2b97ecf | 761 | die(_("Error in object")); |
2af202be | 762 | if (fsck_walk(obj, mark_link, NULL)) |
c2b97ecf | 763 | die(_("Not all child objects of %s are reachable"), sha1_to_hex(obj->sha1)); |
0153be05 MK |
764 | |
765 | if (obj->type == OBJ_TREE) { | |
766 | struct tree *item = (struct tree *) obj; | |
767 | item->buffer = NULL; | |
768 | } | |
769 | if (obj->type == OBJ_COMMIT) { | |
770 | struct commit *commit = (struct commit *) obj; | |
771 | commit->buffer = NULL; | |
772 | } | |
773 | obj->flags |= FLAG_CHECKED; | |
774 | } | |
b8a2486f | 775 | read_unlock(); |
0153be05 | 776 | } |
9ec2dde9 NTND |
777 | |
778 | free(new_data); | |
9cf6d335 SV |
779 | } |
780 | ||
20e95d0a NTND |
781 | /* |
782 | * This function is part of find_unresolved_deltas(). There are two | |
783 | * walkers going in the opposite ways. | |
784 | * | |
785 | * The first one in find_unresolved_deltas() traverses down from | |
786 | * parent node to children, deflating nodes along the way. However, | |
787 | * memory for deflated nodes is limited by delta_base_cache_limit, so | |
788 | * at some point parent node's deflated content may be freed. | |
789 | * | |
790 | * The second walker is this function, which goes from current node up | |
791 | * to top parent if necessary to deflate the node. In normal | |
792 | * situation, its parent node would be already deflated, so it just | |
793 | * needs to apply delta. | |
794 | * | |
795 | * In the worst case scenario, parent node is no longer deflated because | |
796 | * we're running out of delta_base_cache_limit; we need to re-deflate | |
797 | * parents, possibly up to the top base. | |
798 | * | |
799 | * All deflated objects here are subject to be freed if we exceed | |
800 | * delta_base_cache_limit, just like in find_unresolved_deltas(), we | |
801 | * just need to make sure the last node is not freed. | |
802 | */ | |
92392b4a SP |
803 | static void *get_base_data(struct base_data *c) |
804 | { | |
805 | if (!c->data) { | |
806 | struct object_entry *obj = c->obj; | |
20e95d0a NTND |
807 | struct base_data **delta = NULL; |
808 | int delta_nr = 0, delta_alloc = 0; | |
92392b4a | 809 | |
20e95d0a NTND |
810 | while (is_delta_type(c->obj->type) && !c->data) { |
811 | ALLOC_GROW(delta, delta_nr + 1, delta_alloc); | |
812 | delta[delta_nr++] = c; | |
813 | c = c->base; | |
814 | } | |
815 | if (!delta_nr) { | |
816 | c->data = get_data_from_pack(obj); | |
817 | c->size = obj->size; | |
b8a2486f | 818 | get_thread_data()->base_cache_used += c->size; |
20e95d0a NTND |
819 | prune_base_data(c); |
820 | } | |
821 | for (; delta_nr > 0; delta_nr--) { | |
822 | void *base, *raw; | |
823 | c = delta[delta_nr - 1]; | |
824 | obj = c->obj; | |
825 | base = get_base_data(c->base); | |
826 | raw = get_data_from_pack(obj); | |
92392b4a SP |
827 | c->data = patch_delta( |
828 | base, c->base->size, | |
829 | raw, obj->size, | |
830 | &c->size); | |
831 | free(raw); | |
832 | if (!c->data) | |
c2b97ecf | 833 | bad_object(obj->idx.offset, _("failed to apply delta")); |
b8a2486f | 834 | get_thread_data()->base_cache_used += c->size; |
20e95d0a | 835 | prune_base_data(c); |
9441b61d | 836 | } |
20e95d0a | 837 | free(delta); |
92392b4a SP |
838 | } |
839 | return c->data; | |
840 | } | |
841 | ||
f41aebd4 | 842 | static void resolve_delta(struct object_entry *delta_obj, |
9441b61d | 843 | struct base_data *base, struct base_data *result) |
9cf6d335 | 844 | { |
ce3f6dc6 | 845 | void *base_data, *delta_data; |
9cf6d335 | 846 | |
ce3f6dc6 | 847 | delta_obj->real_type = base->obj->real_type; |
3aba2fdd NTND |
848 | if (show_stat) { |
849 | delta_obj->delta_depth = base->obj->delta_depth + 1; | |
850 | deepest_delta_lock(); | |
851 | if (deepest_delta < delta_obj->delta_depth) | |
852 | deepest_delta = delta_obj->delta_depth; | |
853 | deepest_delta_unlock(); | |
854 | } | |
38a45561 | 855 | delta_obj->base_object_no = base->obj - objects; |
636171cb | 856 | delta_data = get_data_from_pack(delta_obj); |
ce3f6dc6 | 857 | base_data = get_base_data(base); |
9441b61d | 858 | result->obj = delta_obj; |
ce3f6dc6 NP |
859 | result->data = patch_delta(base_data, base->size, |
860 | delta_data, delta_obj->size, &result->size); | |
9cf6d335 | 861 | free(delta_data); |
9441b61d | 862 | if (!result->data) |
c2b97ecf | 863 | bad_object(delta_obj->idx.offset, _("failed to apply delta")); |
681b07de NTND |
864 | hash_sha1_file(result->data, result->size, |
865 | typename(delta_obj->real_type), delta_obj->idx.sha1); | |
9ec2dde9 | 866 | sha1_object(result->data, NULL, result->size, delta_obj->real_type, |
9441b61d | 867 | delta_obj->idx.sha1); |
b8a2486f | 868 | counter_lock(); |
636171cb | 869 | nr_resolved_deltas++; |
b8a2486f | 870 | counter_unlock(); |
9441b61d NP |
871 | } |
872 | ||
2baad220 NTND |
873 | static struct base_data *find_unresolved_deltas_1(struct base_data *base, |
874 | struct base_data *prev_base) | |
9441b61d | 875 | { |
2baad220 | 876 | if (base->ref_last == -1 && base->ofs_last == -1) { |
9441b61d NP |
877 | union delta_base base_spec; |
878 | ||
879 | hashcpy(base_spec.sha1, base->obj->idx.sha1); | |
7218a215 | 880 | find_delta_children(&base_spec, |
2baad220 | 881 | &base->ref_first, &base->ref_last, OBJ_REF_DELTA); |
53dda6ff | 882 | |
9441b61d NP |
883 | memset(&base_spec, 0, sizeof(base_spec)); |
884 | base_spec.offset = base->obj->idx.offset; | |
7218a215 | 885 | find_delta_children(&base_spec, |
2baad220 | 886 | &base->ofs_first, &base->ofs_last, OBJ_OFS_DELTA); |
4a438cab | 887 | |
2baad220 NTND |
888 | if (base->ref_last == -1 && base->ofs_last == -1) { |
889 | free(base->data); | |
890 | return NULL; | |
891 | } | |
53dda6ff | 892 | |
2baad220 NTND |
893 | link_base_data(prev_base, base); |
894 | } | |
4a438cab | 895 | |
2baad220 NTND |
896 | if (base->ref_first <= base->ref_last) { |
897 | struct object_entry *child = objects + deltas[base->ref_first].obj_no; | |
898 | struct base_data *result = alloc_base_data(); | |
7218a215 JH |
899 | |
900 | assert(child->real_type == OBJ_REF_DELTA); | |
2baad220 NTND |
901 | resolve_delta(child, base, result); |
902 | if (base->ref_first == base->ref_last && base->ofs_last == -1) | |
7218a215 | 903 | free_base_data(base); |
2baad220 NTND |
904 | |
905 | base->ref_first++; | |
906 | return result; | |
53dda6ff NP |
907 | } |
908 | ||
2baad220 NTND |
909 | if (base->ofs_first <= base->ofs_last) { |
910 | struct object_entry *child = objects + deltas[base->ofs_first].obj_no; | |
911 | struct base_data *result = alloc_base_data(); | |
7218a215 JH |
912 | |
913 | assert(child->real_type == OBJ_OFS_DELTA); | |
2baad220 NTND |
914 | resolve_delta(child, base, result); |
915 | if (base->ofs_first == base->ofs_last) | |
7218a215 | 916 | free_base_data(base); |
2baad220 NTND |
917 | |
918 | base->ofs_first++; | |
919 | return result; | |
9cf6d335 | 920 | } |
53dda6ff | 921 | |
9441b61d | 922 | unlink_base_data(base); |
2baad220 NTND |
923 | return NULL; |
924 | } | |
925 | ||
926 | static void find_unresolved_deltas(struct base_data *base) | |
927 | { | |
928 | struct base_data *new_base, *prev_base = NULL; | |
929 | for (;;) { | |
930 | new_base = find_unresolved_deltas_1(base, prev_base); | |
931 | ||
932 | if (new_base) { | |
933 | prev_base = base; | |
934 | base = new_base; | |
935 | } else { | |
936 | free(base); | |
937 | base = prev_base; | |
938 | if (!base) | |
939 | return; | |
940 | prev_base = base->base; | |
941 | } | |
942 | } | |
9cf6d335 SV |
943 | } |
944 | ||
945 | static int compare_delta_entry(const void *a, const void *b) | |
946 | { | |
947 | const struct delta_entry *delta_a = a; | |
948 | const struct delta_entry *delta_b = b; | |
7218a215 JH |
949 | |
950 | /* group by type (ref vs ofs) and then by value (sha-1 or offset) */ | |
951 | return compare_delta_bases(&delta_a->base, &delta_b->base, | |
952 | objects[delta_a->obj_no].type, | |
953 | objects[delta_b->obj_no].type); | |
9cf6d335 SV |
954 | } |
955 | ||
5272f755 NTND |
956 | static void resolve_base(struct object_entry *obj) |
957 | { | |
958 | struct base_data *base_obj = alloc_base_data(); | |
959 | base_obj->obj = obj; | |
960 | base_obj->data = NULL; | |
961 | find_unresolved_deltas(base_obj); | |
962 | } | |
963 | ||
b8a2486f NTND |
964 | #ifndef NO_PTHREADS |
965 | static void *threaded_second_pass(void *data) | |
966 | { | |
967 | set_thread_data(data); | |
968 | for (;;) { | |
969 | int i; | |
970 | work_lock(); | |
971 | display_progress(progress, nr_resolved_deltas); | |
972 | while (nr_dispatched < nr_objects && | |
973 | is_delta_type(objects[nr_dispatched].type)) | |
974 | nr_dispatched++; | |
975 | if (nr_dispatched >= nr_objects) { | |
976 | work_unlock(); | |
977 | break; | |
978 | } | |
979 | i = nr_dispatched++; | |
980 | work_unlock(); | |
981 | ||
982 | resolve_base(&objects[i]); | |
983 | } | |
984 | return NULL; | |
985 | } | |
986 | #endif | |
987 | ||
5272f755 NTND |
988 | /* |
989 | * First pass: | |
990 | * - find locations of all objects; | |
991 | * - calculate SHA1 of all non-delta objects; | |
992 | * - remember base (SHA1 or offset) for all deltas. | |
993 | */ | |
2d477051 | 994 | static void parse_pack_objects(unsigned char *sha1) |
9cf6d335 | 995 | { |
9ec2dde9 | 996 | int i, nr_delays = 0; |
53dda6ff | 997 | struct delta_entry *delta = deltas; |
2d477051 | 998 | struct stat st; |
9cf6d335 | 999 | |
13aaf148 | 1000 | if (verbose) |
29e63ed3 | 1001 | progress = start_progress( |
c2b97ecf | 1002 | from_stdin ? _("Receiving objects") : _("Indexing objects"), |
29e63ed3 | 1003 | nr_objects); |
9cf6d335 SV |
1004 | for (i = 0; i < nr_objects; i++) { |
1005 | struct object_entry *obj = &objects[i]; | |
681b07de | 1006 | void *data = unpack_raw_entry(obj, &delta->base, obj->idx.sha1); |
9cf6d335 | 1007 | obj->real_type = obj->type; |
4f8ec74e | 1008 | if (is_delta_type(obj->type)) { |
53dda6ff | 1009 | nr_deltas++; |
636171cb | 1010 | delta->obj_no = i; |
53dda6ff | 1011 | delta++; |
9ec2dde9 NTND |
1012 | } else if (!data) { |
1013 | /* large blobs, check later */ | |
1014 | obj->real_type = OBJ_BAD; | |
1015 | nr_delays++; | |
9cf6d335 | 1016 | } else |
9ec2dde9 | 1017 | sha1_object(data, NULL, obj->size, obj->type, obj->idx.sha1); |
9cf6d335 | 1018 | free(data); |
4d4fcc54 | 1019 | display_progress(progress, i+1); |
9cf6d335 | 1020 | } |
aa7e44bf | 1021 | objects[i].idx.offset = consumed_bytes; |
4d4fcc54 | 1022 | stop_progress(&progress); |
2d477051 NP |
1023 | |
1024 | /* Check pack integrity */ | |
636171cb | 1025 | flush(); |
9126f009 | 1026 | git_SHA1_Final(sha1, &input_ctx); |
2d477051 | 1027 | if (hashcmp(fill(20), sha1)) |
c2b97ecf | 1028 | die(_("pack is corrupted (SHA1 mismatch)")); |
9bee2478 | 1029 | use(20); |
2d477051 NP |
1030 | |
1031 | /* If input_fd is a file, we should have reached its end now. */ | |
1032 | if (fstat(input_fd, &st)) | |
c2b97ecf | 1033 | die_errno(_("cannot fstat packfile")); |
fa257b05 JS |
1034 | if (S_ISREG(st.st_mode) && |
1035 | lseek(input_fd, 0, SEEK_CUR) - input_len != st.st_size) | |
c2b97ecf | 1036 | die(_("pack has junk at the end")); |
9ec2dde9 NTND |
1037 | |
1038 | for (i = 0; i < nr_objects; i++) { | |
1039 | struct object_entry *obj = &objects[i]; | |
1040 | if (obj->real_type != OBJ_BAD) | |
1041 | continue; | |
1042 | obj->real_type = obj->type; | |
1043 | sha1_object(NULL, obj, obj->size, obj->type, obj->idx.sha1); | |
1044 | nr_delays--; | |
1045 | } | |
1046 | if (nr_delays) | |
1047 | die(_("confusion beyond insanity in parse_pack_objects()")); | |
5272f755 NTND |
1048 | } |
1049 | ||
1050 | /* | |
1051 | * Second pass: | |
1052 | * - for all non-delta objects, look if it is used as a base for | |
1053 | * deltas; | |
1054 | * - if used as a base, uncompress the object and apply all deltas, | |
1055 | * recursively checking if the resulting object is used as a base | |
1056 | * for some more deltas. | |
1057 | */ | |
1058 | static void resolve_deltas(void) | |
1059 | { | |
1060 | int i; | |
9cf6d335 | 1061 | |
3c9af366 NP |
1062 | if (!nr_deltas) |
1063 | return; | |
1064 | ||
53dda6ff | 1065 | /* Sort deltas by base SHA1/offset for fast searching */ |
9cf6d335 SV |
1066 | qsort(deltas, nr_deltas, sizeof(struct delta_entry), |
1067 | compare_delta_entry); | |
1068 | ||
13aaf148 | 1069 | if (verbose) |
c2b97ecf | 1070 | progress = start_progress(_("Resolving deltas"), nr_deltas); |
b8a2486f NTND |
1071 | |
1072 | #ifndef NO_PTHREADS | |
1073 | nr_dispatched = 0; | |
1074 | if (nr_threads > 1 || getenv("GIT_FORCE_THREADS")) { | |
1075 | init_thread(); | |
1076 | for (i = 0; i < nr_threads; i++) { | |
1077 | int ret = pthread_create(&thread_data[i].thread, NULL, | |
1078 | threaded_second_pass, thread_data + i); | |
1079 | if (ret) | |
1080 | die("unable to create thread: %s", strerror(ret)); | |
1081 | } | |
1082 | for (i = 0; i < nr_threads; i++) | |
1083 | pthread_join(thread_data[i].thread, NULL); | |
1084 | cleanup_thread(); | |
1085 | return; | |
1086 | } | |
1087 | #endif | |
1088 | ||
9cf6d335 SV |
1089 | for (i = 0; i < nr_objects; i++) { |
1090 | struct object_entry *obj = &objects[i]; | |
9cf6d335 | 1091 | |
4f8ec74e | 1092 | if (is_delta_type(obj->type)) |
9cf6d335 | 1093 | continue; |
5272f755 | 1094 | resolve_base(obj); |
4d4fcc54 | 1095 | display_progress(progress, nr_resolved_deltas); |
9cf6d335 | 1096 | } |
636171cb NP |
1097 | } |
1098 | ||
5272f755 NTND |
1099 | /* |
1100 | * Third pass: | |
1101 | * - append objects to convert thin pack to full pack if required | |
1102 | * - write the final 20-byte SHA-1 | |
1103 | */ | |
1104 | static void fix_unresolved_deltas(struct sha1file *f, int nr_unresolved); | |
1105 | static void conclude_pack(int fix_thin_pack, const char *curr_pack, unsigned char *pack_sha1) | |
1106 | { | |
1107 | if (nr_deltas == nr_resolved_deltas) { | |
1108 | stop_progress(&progress); | |
1109 | /* Flush remaining pack final 20-byte SHA1. */ | |
1110 | flush(); | |
1111 | return; | |
1112 | } | |
1113 | ||
1114 | if (fix_thin_pack) { | |
1115 | struct sha1file *f; | |
1116 | unsigned char read_sha1[20], tail_sha1[20]; | |
1117 | char msg[48]; | |
1118 | int nr_unresolved = nr_deltas - nr_resolved_deltas; | |
1119 | int nr_objects_initial = nr_objects; | |
1120 | if (nr_unresolved <= 0) | |
cc13431a | 1121 | die(_("confusion beyond insanity")); |
5272f755 NTND |
1122 | objects = xrealloc(objects, |
1123 | (nr_objects + nr_unresolved + 1) | |
1124 | * sizeof(*objects)); | |
1125 | f = sha1fd(output_fd, curr_pack); | |
1126 | fix_unresolved_deltas(f, nr_unresolved); | |
1127 | sprintf(msg, "completed with %d local objects", | |
1128 | nr_objects - nr_objects_initial); | |
1129 | stop_progress_msg(&progress, msg); | |
1130 | sha1close(f, tail_sha1, 0); | |
1131 | hashcpy(read_sha1, pack_sha1); | |
1132 | fixup_pack_header_footer(output_fd, pack_sha1, | |
1133 | curr_pack, nr_objects, | |
1134 | read_sha1, consumed_bytes-20); | |
1135 | if (hashcmp(read_sha1, tail_sha1) != 0) | |
1136 | die("Unexpected tail checksum for %s " | |
1137 | "(disk corruption?)", curr_pack); | |
1138 | } | |
1139 | if (nr_deltas != nr_resolved_deltas) | |
cc13431a JH |
1140 | die(Q_("pack has %d unresolved delta", |
1141 | "pack has %d unresolved deltas", | |
1142 | nr_deltas - nr_resolved_deltas), | |
5272f755 NTND |
1143 | nr_deltas - nr_resolved_deltas); |
1144 | } | |
1145 | ||
8522148f | 1146 | static int write_compressed(struct sha1file *f, void *in, unsigned int size) |
636171cb | 1147 | { |
ef49a7a0 | 1148 | git_zstream stream; |
7734d7f2 NP |
1149 | int status; |
1150 | unsigned char outbuf[4096]; | |
636171cb NP |
1151 | |
1152 | memset(&stream, 0, sizeof(stream)); | |
55bb5c91 | 1153 | git_deflate_init(&stream, zlib_compression_level); |
636171cb NP |
1154 | stream.next_in = in; |
1155 | stream.avail_in = size; | |
636171cb | 1156 | |
7734d7f2 NP |
1157 | do { |
1158 | stream.next_out = outbuf; | |
1159 | stream.avail_out = sizeof(outbuf); | |
55bb5c91 | 1160 | status = git_deflate(&stream, Z_FINISH); |
7734d7f2 NP |
1161 | sha1write(f, outbuf, sizeof(outbuf) - stream.avail_out); |
1162 | } while (status == Z_OK); | |
1163 | ||
1164 | if (status != Z_STREAM_END) | |
c2b97ecf | 1165 | die(_("unable to deflate appended object (%d)"), status); |
636171cb | 1166 | size = stream.total_out; |
55bb5c91 | 1167 | git_deflate_end(&stream); |
636171cb NP |
1168 | return size; |
1169 | } | |
1170 | ||
8522148f | 1171 | static struct object_entry *append_obj_to_pack(struct sha1file *f, |
03993e13 | 1172 | const unsigned char *sha1, void *buf, |
636171cb NP |
1173 | unsigned long size, enum object_type type) |
1174 | { | |
1175 | struct object_entry *obj = &objects[nr_objects++]; | |
1176 | unsigned char header[10]; | |
1177 | unsigned long s = size; | |
1178 | int n = 0; | |
1179 | unsigned char c = (type << 4) | (s & 15); | |
1180 | s >>= 4; | |
1181 | while (s) { | |
1182 | header[n++] = c | 0x80; | |
1183 | c = s & 0x7f; | |
1184 | s >>= 7; | |
1185 | } | |
1186 | header[n++] = c; | |
8522148f NP |
1187 | crc32_begin(f); |
1188 | sha1write(f, header, n); | |
72de2883 BS |
1189 | obj[0].size = size; |
1190 | obj[0].hdr_size = n; | |
1191 | obj[0].type = type; | |
1192 | obj[0].real_type = type; | |
aa7e44bf | 1193 | obj[1].idx.offset = obj[0].idx.offset + n; |
8522148f NP |
1194 | obj[1].idx.offset += write_compressed(f, buf, size); |
1195 | obj[0].idx.crc32 = crc32_end(f); | |
838cd346 | 1196 | sha1flush(f); |
aa7e44bf | 1197 | hashcpy(obj->idx.sha1, sha1); |
03993e13 | 1198 | return obj; |
636171cb NP |
1199 | } |
1200 | ||
1201 | static int delta_pos_compare(const void *_a, const void *_b) | |
1202 | { | |
1203 | struct delta_entry *a = *(struct delta_entry **)_a; | |
1204 | struct delta_entry *b = *(struct delta_entry **)_b; | |
1205 | return a->obj_no - b->obj_no; | |
1206 | } | |
9cf6d335 | 1207 | |
8522148f | 1208 | static void fix_unresolved_deltas(struct sha1file *f, int nr_unresolved) |
636171cb NP |
1209 | { |
1210 | struct delta_entry **sorted_by_pos; | |
96a02f8f | 1211 | int i, n = 0; |
636171cb NP |
1212 | |
1213 | /* | |
1214 | * Since many unresolved deltas may well be themselves base objects | |
1215 | * for more unresolved deltas, we really want to include the | |
1216 | * smallest number of base objects that would cover as much delta | |
1217 | * as possible by picking the | |
1218 | * trunc deltas first, allowing for other deltas to resolve without | |
1219 | * additional base objects. Since most base objects are to be found | |
1220 | * before deltas depending on them, a good heuristic is to start | |
1221 | * resolving deltas in the same order as their position in the pack. | |
1222 | */ | |
1223 | sorted_by_pos = xmalloc(nr_unresolved * sizeof(*sorted_by_pos)); | |
9cf6d335 | 1224 | for (i = 0; i < nr_deltas; i++) { |
636171cb NP |
1225 | if (objects[deltas[i].obj_no].real_type != OBJ_REF_DELTA) |
1226 | continue; | |
1227 | sorted_by_pos[n++] = &deltas[i]; | |
9cf6d335 | 1228 | } |
636171cb NP |
1229 | qsort(sorted_by_pos, n, sizeof(*sorted_by_pos), delta_pos_compare); |
1230 | ||
1231 | for (i = 0; i < n; i++) { | |
1232 | struct delta_entry *d = sorted_by_pos[i]; | |
21666f1a | 1233 | enum object_type type; |
2baad220 | 1234 | struct base_data *base_obj = alloc_base_data(); |
636171cb NP |
1235 | |
1236 | if (objects[d->obj_no].real_type != OBJ_REF_DELTA) | |
1237 | continue; | |
2baad220 NTND |
1238 | base_obj->data = read_sha1_file(d->base.sha1, &type, &base_obj->size); |
1239 | if (!base_obj->data) | |
636171cb | 1240 | continue; |
636171cb | 1241 | |
2baad220 NTND |
1242 | if (check_sha1_signature(d->base.sha1, base_obj->data, |
1243 | base_obj->size, typename(type))) | |
c2b97ecf | 1244 | die(_("local object %s is corrupt"), sha1_to_hex(d->base.sha1)); |
2baad220 NTND |
1245 | base_obj->obj = append_obj_to_pack(f, d->base.sha1, |
1246 | base_obj->data, base_obj->size, type); | |
1247 | find_unresolved_deltas(base_obj); | |
4d4fcc54 | 1248 | display_progress(progress, nr_resolved_deltas); |
636171cb NP |
1249 | } |
1250 | free(sorted_by_pos); | |
1251 | } | |
1252 | ||
e42797f5 NP |
1253 | static void final(const char *final_pack_name, const char *curr_pack_name, |
1254 | const char *final_index_name, const char *curr_index_name, | |
b8077709 | 1255 | const char *keep_name, const char *keep_msg, |
e42797f5 NP |
1256 | unsigned char *sha1) |
1257 | { | |
3a55602e | 1258 | const char *report = "pack"; |
e42797f5 NP |
1259 | char name[PATH_MAX]; |
1260 | int err; | |
1261 | ||
1262 | if (!from_stdin) { | |
1263 | close(input_fd); | |
1264 | } else { | |
4c81b03e | 1265 | fsync_or_die(output_fd, curr_pack_name); |
e42797f5 NP |
1266 | err = close(output_fd); |
1267 | if (err) | |
c2b97ecf | 1268 | die_errno(_("error while closing pack file")); |
e42797f5 NP |
1269 | } |
1270 | ||
b8077709 SP |
1271 | if (keep_msg) { |
1272 | int keep_fd, keep_msg_len = strlen(keep_msg); | |
6e180cdc JH |
1273 | |
1274 | if (!keep_name) | |
1275 | keep_fd = odb_pack_keep(name, sizeof(name), sha1); | |
1276 | else | |
1277 | keep_fd = open(keep_name, O_RDWR|O_CREAT|O_EXCL, 0600); | |
1278 | ||
9ca4a201 NP |
1279 | if (keep_fd < 0) { |
1280 | if (errno != EEXIST) | |
c2b97ecf | 1281 | die_errno(_("cannot write keep file '%s'"), |
d824cbba | 1282 | keep_name); |
9ca4a201 NP |
1283 | } else { |
1284 | if (keep_msg_len > 0) { | |
1285 | write_or_die(keep_fd, keep_msg, keep_msg_len); | |
1286 | write_or_die(keep_fd, "\n", 1); | |
1287 | } | |
91c8d590 | 1288 | if (close(keep_fd) != 0) |
c2b97ecf | 1289 | die_errno(_("cannot close written keep file '%s'"), |
d824cbba | 1290 | keep_name); |
576162a4 | 1291 | report = "keep"; |
b8077709 | 1292 | } |
b8077709 SP |
1293 | } |
1294 | ||
e42797f5 NP |
1295 | if (final_pack_name != curr_pack_name) { |
1296 | if (!final_pack_name) { | |
1297 | snprintf(name, sizeof(name), "%s/pack/pack-%s.pack", | |
1298 | get_object_directory(), sha1_to_hex(sha1)); | |
1299 | final_pack_name = name; | |
1300 | } | |
1301 | if (move_temp_to_file(curr_pack_name, final_pack_name)) | |
c2b97ecf | 1302 | die(_("cannot store pack file")); |
fb8b1936 | 1303 | } else if (from_stdin) |
33b65030 | 1304 | chmod(final_pack_name, 0444); |
e42797f5 | 1305 | |
e42797f5 NP |
1306 | if (final_index_name != curr_index_name) { |
1307 | if (!final_index_name) { | |
1308 | snprintf(name, sizeof(name), "%s/pack/pack-%s.idx", | |
1309 | get_object_directory(), sha1_to_hex(sha1)); | |
1310 | final_index_name = name; | |
1311 | } | |
1312 | if (move_temp_to_file(curr_index_name, final_index_name)) | |
c2b97ecf | 1313 | die(_("cannot store index file")); |
fb8b1936 JH |
1314 | } else |
1315 | chmod(final_index_name, 0444); | |
576162a4 NP |
1316 | |
1317 | if (!from_stdin) { | |
1318 | printf("%s\n", sha1_to_hex(sha1)); | |
1319 | } else { | |
1320 | char buf[48]; | |
1321 | int len = snprintf(buf, sizeof(buf), "%s\t%s\n", | |
1322 | report, sha1_to_hex(sha1)); | |
d1b2ddc8 | 1323 | write_or_die(1, buf, len); |
576162a4 NP |
1324 | |
1325 | /* | |
1326 | * Let's just mimic git-unpack-objects here and write | |
1327 | * the last part of the input buffer to stdout. | |
1328 | */ | |
1329 | while (input_len) { | |
1330 | err = xwrite(1, input_buffer + input_offset, input_len); | |
1331 | if (err <= 0) | |
1332 | break; | |
1333 | input_len -= err; | |
1334 | input_offset += err; | |
1335 | } | |
1336 | } | |
9cf6d335 SV |
1337 | } |
1338 | ||
ef90d6d4 | 1339 | static int git_index_pack_config(const char *k, const char *v, void *cb) |
4d00bda2 | 1340 | { |
ebcfb379 JH |
1341 | struct pack_idx_option *opts = cb; |
1342 | ||
4d00bda2 | 1343 | if (!strcmp(k, "pack.indexversion")) { |
ebcfb379 JH |
1344 | opts->version = git_config_int(k, v); |
1345 | if (opts->version > 2) | |
1346 | die("bad pack.indexversion=%"PRIu32, opts->version); | |
4d00bda2 NP |
1347 | return 0; |
1348 | } | |
b8a2486f NTND |
1349 | if (!strcmp(k, "pack.threads")) { |
1350 | nr_threads = git_config_int(k, v); | |
1351 | if (nr_threads < 0) | |
1352 | die("invalid number of threads specified (%d)", | |
1353 | nr_threads); | |
1354 | #ifdef NO_PTHREADS | |
1355 | if (nr_threads != 1) | |
1356 | warning("no threads support, ignoring %s", k); | |
1357 | nr_threads = 1; | |
1358 | #endif | |
1359 | return 0; | |
1360 | } | |
ef90d6d4 | 1361 | return git_default_config(k, v, cb); |
4d00bda2 NP |
1362 | } |
1363 | ||
3c9fc074 JH |
1364 | static int cmp_uint32(const void *a_, const void *b_) |
1365 | { | |
1366 | uint32_t a = *((uint32_t *)a_); | |
1367 | uint32_t b = *((uint32_t *)b_); | |
1368 | ||
1369 | return (a < b) ? -1 : (a != b); | |
1370 | } | |
1371 | ||
1372 | static void read_v2_anomalous_offsets(struct packed_git *p, | |
1373 | struct pack_idx_option *opts) | |
1374 | { | |
1375 | const uint32_t *idx1, *idx2; | |
1376 | uint32_t i; | |
1377 | ||
1378 | /* The address of the 4-byte offset table */ | |
1379 | idx1 = (((const uint32_t *)p->index_data) | |
1380 | + 2 /* 8-byte header */ | |
1381 | + 256 /* fan out */ | |
1382 | + 5 * p->num_objects /* 20-byte SHA-1 table */ | |
1383 | + p->num_objects /* CRC32 table */ | |
1384 | ); | |
1385 | ||
1386 | /* The address of the 8-byte offset table */ | |
1387 | idx2 = idx1 + p->num_objects; | |
1388 | ||
1389 | for (i = 0; i < p->num_objects; i++) { | |
1390 | uint32_t off = ntohl(idx1[i]); | |
1391 | if (!(off & 0x80000000)) | |
1392 | continue; | |
1393 | off = off & 0x7fffffff; | |
1394 | if (idx2[off * 2]) | |
1395 | continue; | |
1396 | /* | |
1397 | * The real offset is ntohl(idx2[off * 2]) in high 4 | |
1398 | * octets, and ntohl(idx2[off * 2 + 1]) in low 4 | |
1399 | * octets. But idx2[off * 2] is Zero!!! | |
1400 | */ | |
1401 | ALLOC_GROW(opts->anomaly, opts->anomaly_nr + 1, opts->anomaly_alloc); | |
1402 | opts->anomaly[opts->anomaly_nr++] = ntohl(idx2[off * 2 + 1]); | |
1403 | } | |
1404 | ||
1405 | if (1 < opts->anomaly_nr) | |
1406 | qsort(opts->anomaly, opts->anomaly_nr, sizeof(uint32_t), cmp_uint32); | |
1407 | } | |
1408 | ||
e337a04d JH |
1409 | static void read_idx_option(struct pack_idx_option *opts, const char *pack_name) |
1410 | { | |
1411 | struct packed_git *p = add_packed_git(pack_name, strlen(pack_name), 1); | |
1412 | ||
1413 | if (!p) | |
c2b97ecf | 1414 | die(_("Cannot open existing pack file '%s'"), pack_name); |
e337a04d | 1415 | if (open_pack_index(p)) |
c2b97ecf | 1416 | die(_("Cannot open existing pack idx file for '%s'"), pack_name); |
e337a04d JH |
1417 | |
1418 | /* Read the attributes from the existing idx file */ | |
1419 | opts->version = p->index_version; | |
1420 | ||
3c9fc074 JH |
1421 | if (opts->version == 2) |
1422 | read_v2_anomalous_offsets(p, opts); | |
1423 | ||
e337a04d JH |
1424 | /* |
1425 | * Get rid of the idx file as we do not need it anymore. | |
1426 | * NEEDSWORK: extract this bit from free_pack_by_name() in | |
1427 | * sha1_file.c, perhaps? It shouldn't matter very much as we | |
1428 | * know we haven't installed this pack (hence we never have | |
1429 | * read anything from it). | |
1430 | */ | |
1431 | close_pack_index(p); | |
1432 | free(p); | |
1433 | } | |
1434 | ||
38a45561 JH |
1435 | static void show_pack_info(int stat_only) |
1436 | { | |
d1a0ed18 JH |
1437 | int i, baseobjects = nr_objects - nr_deltas; |
1438 | unsigned long *chain_histogram = NULL; | |
1439 | ||
1440 | if (deepest_delta) | |
1441 | chain_histogram = xcalloc(deepest_delta, sizeof(unsigned long)); | |
1442 | ||
38a45561 JH |
1443 | for (i = 0; i < nr_objects; i++) { |
1444 | struct object_entry *obj = &objects[i]; | |
1445 | ||
d1a0ed18 JH |
1446 | if (is_delta_type(obj->type)) |
1447 | chain_histogram[obj->delta_depth - 1]++; | |
38a45561 JH |
1448 | if (stat_only) |
1449 | continue; | |
1450 | printf("%s %-6s %lu %lu %"PRIuMAX, | |
1451 | sha1_to_hex(obj->idx.sha1), | |
1452 | typename(obj->real_type), obj->size, | |
1453 | (unsigned long)(obj[1].idx.offset - obj->idx.offset), | |
1454 | (uintmax_t)obj->idx.offset); | |
1455 | if (is_delta_type(obj->type)) { | |
1456 | struct object_entry *bobj = &objects[obj->base_object_no]; | |
1457 | printf(" %u %s", obj->delta_depth, sha1_to_hex(bobj->idx.sha1)); | |
1458 | } | |
1459 | putchar('\n'); | |
1460 | } | |
d1a0ed18 JH |
1461 | |
1462 | if (baseobjects) | |
c2b97ecf NTND |
1463 | printf_ln(Q_("non delta: %d object", |
1464 | "non delta: %d objects", | |
1465 | baseobjects), | |
1466 | baseobjects); | |
d1a0ed18 JH |
1467 | for (i = 0; i < deepest_delta; i++) { |
1468 | if (!chain_histogram[i]) | |
1469 | continue; | |
c2b97ecf NTND |
1470 | printf_ln(Q_("chain length = %d: %lu object", |
1471 | "chain length = %d: %lu objects", | |
1472 | chain_histogram[i]), | |
1473 | i + 1, | |
1474 | chain_histogram[i]); | |
d1a0ed18 | 1475 | } |
38a45561 JH |
1476 | } |
1477 | ||
3bb72562 | 1478 | int cmd_index_pack(int argc, const char **argv, const char *prefix) |
9cf6d335 | 1479 | { |
3aba2fdd | 1480 | int i, fix_thin_pack = 0, verify = 0, stat_only = 0; |
3bb72562 LT |
1481 | const char *curr_pack, *curr_index; |
1482 | const char *index_name = NULL, *pack_name = NULL; | |
b8077709 SP |
1483 | const char *keep_name = NULL, *keep_msg = NULL; |
1484 | char *index_name_buf = NULL, *keep_name_buf = NULL; | |
aa7e44bf | 1485 | struct pack_idx_entry **idx_objects; |
ebcfb379 | 1486 | struct pack_idx_option opts; |
8522148f | 1487 | unsigned char pack_sha1[20]; |
9cf6d335 | 1488 | |
99caeed0 JN |
1489 | if (argc == 2 && !strcmp(argv[1], "-h")) |
1490 | usage(index_pack_usage); | |
1491 | ||
6e2a09d2 NE |
1492 | read_replace_refs = 0; |
1493 | ||
ebcfb379 JH |
1494 | reset_pack_idx_option(&opts); |
1495 | git_config(git_index_pack_config, &opts); | |
3f8099fc | 1496 | if (prefix && chdir(prefix)) |
c2b97ecf | 1497 | die(_("Cannot come back to cwd")); |
4d00bda2 | 1498 | |
9cf6d335 | 1499 | for (i = 1; i < argc; i++) { |
3bb72562 | 1500 | const char *arg = argv[i]; |
9cf6d335 SV |
1501 | |
1502 | if (*arg == '-') { | |
e42797f5 NP |
1503 | if (!strcmp(arg, "--stdin")) { |
1504 | from_stdin = 1; | |
636171cb NP |
1505 | } else if (!strcmp(arg, "--fix-thin")) { |
1506 | fix_thin_pack = 1; | |
0153be05 MK |
1507 | } else if (!strcmp(arg, "--strict")) { |
1508 | strict = 1; | |
e337a04d JH |
1509 | } else if (!strcmp(arg, "--verify")) { |
1510 | verify = 1; | |
38a45561 JH |
1511 | } else if (!strcmp(arg, "--verify-stat")) { |
1512 | verify = 1; | |
3aba2fdd | 1513 | show_stat = 1; |
38a45561 JH |
1514 | } else if (!strcmp(arg, "--verify-stat-only")) { |
1515 | verify = 1; | |
3aba2fdd | 1516 | show_stat = 1; |
38a45561 | 1517 | stat_only = 1; |
b8077709 SP |
1518 | } else if (!strcmp(arg, "--keep")) { |
1519 | keep_msg = ""; | |
cc44c765 | 1520 | } else if (!prefixcmp(arg, "--keep=")) { |
b8077709 | 1521 | keep_msg = arg + 7; |
b8a2486f NTND |
1522 | } else if (!prefixcmp(arg, "--threads=")) { |
1523 | char *end; | |
1524 | nr_threads = strtoul(arg+10, &end, 0); | |
1525 | if (!arg[10] || *end || nr_threads < 0) | |
1526 | usage(index_pack_usage); | |
1527 | #ifdef NO_PTHREADS | |
1528 | if (nr_threads != 1) | |
1529 | warning("no threads support, " | |
1530 | "ignoring %s", arg); | |
1531 | nr_threads = 1; | |
1532 | #endif | |
cc44c765 | 1533 | } else if (!prefixcmp(arg, "--pack_header=")) { |
bed006fb NP |
1534 | struct pack_header *hdr; |
1535 | char *c; | |
1536 | ||
1537 | hdr = (struct pack_header *)input_buffer; | |
1538 | hdr->hdr_signature = htonl(PACK_SIGNATURE); | |
1539 | hdr->hdr_version = htonl(strtoul(arg + 14, &c, 10)); | |
1540 | if (*c != ',') | |
c2b97ecf | 1541 | die(_("bad %s"), arg); |
bed006fb NP |
1542 | hdr->hdr_entries = htonl(strtoul(c + 1, &c, 10)); |
1543 | if (*c) | |
c2b97ecf | 1544 | die(_("bad %s"), arg); |
bed006fb | 1545 | input_len = sizeof(*hdr); |
3c9af366 NP |
1546 | } else if (!strcmp(arg, "-v")) { |
1547 | verbose = 1; | |
e42797f5 | 1548 | } else if (!strcmp(arg, "-o")) { |
9cf6d335 SV |
1549 | if (index_name || (i+1) >= argc) |
1550 | usage(index_pack_usage); | |
1551 | index_name = argv[++i]; | |
4ba7d711 NP |
1552 | } else if (!prefixcmp(arg, "--index-version=")) { |
1553 | char *c; | |
ebcfb379 JH |
1554 | opts.version = strtoul(arg + 16, &c, 10); |
1555 | if (opts.version > 2) | |
c2b97ecf | 1556 | die(_("bad %s"), arg); |
4ba7d711 | 1557 | if (*c == ',') |
ebcfb379 JH |
1558 | opts.off32_limit = strtoul(c+1, &c, 0); |
1559 | if (*c || opts.off32_limit & 0x80000000) | |
c2b97ecf | 1560 | die(_("bad %s"), arg); |
9cf6d335 SV |
1561 | } else |
1562 | usage(index_pack_usage); | |
1563 | continue; | |
1564 | } | |
1565 | ||
1566 | if (pack_name) | |
1567 | usage(index_pack_usage); | |
1568 | pack_name = arg; | |
1569 | } | |
1570 | ||
e42797f5 | 1571 | if (!pack_name && !from_stdin) |
9cf6d335 | 1572 | usage(index_pack_usage); |
636171cb | 1573 | if (fix_thin_pack && !from_stdin) |
c2b97ecf | 1574 | die(_("--fix-thin cannot be used without --stdin")); |
e42797f5 | 1575 | if (!index_name && pack_name) { |
9cf6d335 | 1576 | int len = strlen(pack_name); |
5bb1cda5 | 1577 | if (!has_extension(pack_name, ".pack")) |
c2b97ecf | 1578 | die(_("packfile name '%s' does not end with '.pack'"), |
9cf6d335 | 1579 | pack_name); |
6689f087 | 1580 | index_name_buf = xmalloc(len); |
9cf6d335 SV |
1581 | memcpy(index_name_buf, pack_name, len - 5); |
1582 | strcpy(index_name_buf + len - 5, ".idx"); | |
1583 | index_name = index_name_buf; | |
1584 | } | |
b8077709 SP |
1585 | if (keep_msg && !keep_name && pack_name) { |
1586 | int len = strlen(pack_name); | |
1587 | if (!has_extension(pack_name, ".pack")) | |
c2b97ecf | 1588 | die(_("packfile name '%s' does not end with '.pack'"), |
b8077709 SP |
1589 | pack_name); |
1590 | keep_name_buf = xmalloc(len); | |
1591 | memcpy(keep_name_buf, pack_name, len - 5); | |
1592 | strcpy(keep_name_buf + len - 5, ".keep"); | |
1593 | keep_name = keep_name_buf; | |
1594 | } | |
e337a04d JH |
1595 | if (verify) { |
1596 | if (!index_name) | |
c2b97ecf | 1597 | die(_("--verify with no packfile name given")); |
e337a04d | 1598 | read_idx_option(&opts, index_name); |
68be2fea | 1599 | opts.flags |= WRITE_IDX_VERIFY | WRITE_IDX_STRICT; |
e337a04d | 1600 | } |
68be2fea JH |
1601 | if (strict) |
1602 | opts.flags |= WRITE_IDX_STRICT; | |
9cf6d335 | 1603 | |
b8a2486f NTND |
1604 | #ifndef NO_PTHREADS |
1605 | if (!nr_threads) { | |
1606 | nr_threads = online_cpus(); | |
1607 | /* An experiment showed that more threads does not mean faster */ | |
1608 | if (nr_threads > 3) | |
1609 | nr_threads = 3; | |
1610 | } | |
1611 | #endif | |
1612 | ||
e42797f5 | 1613 | curr_pack = open_pack_file(pack_name); |
9cf6d335 | 1614 | parse_pack_header(); |
38a45561 JH |
1615 | objects = xcalloc(nr_objects + 1, sizeof(struct object_entry)); |
1616 | deltas = xcalloc(nr_objects, sizeof(struct delta_entry)); | |
8522148f | 1617 | parse_pack_objects(pack_sha1); |
5272f755 NTND |
1618 | resolve_deltas(); |
1619 | conclude_pack(fix_thin_pack, curr_pack, pack_sha1); | |
9cf6d335 | 1620 | free(deltas); |
0153be05 MK |
1621 | if (strict) |
1622 | check_objects(); | |
aa7e44bf | 1623 | |
3aba2fdd | 1624 | if (show_stat) |
38a45561 JH |
1625 | show_pack_info(stat_only); |
1626 | ||
aa7e44bf GB |
1627 | idx_objects = xmalloc((nr_objects) * sizeof(struct pack_idx_entry *)); |
1628 | for (i = 0; i < nr_objects; i++) | |
1629 | idx_objects[i] = &objects[i].idx; | |
ebcfb379 | 1630 | curr_index = write_idx_file(index_name, idx_objects, nr_objects, &opts, pack_sha1); |
aa7e44bf GB |
1631 | free(idx_objects); |
1632 | ||
e337a04d JH |
1633 | if (!verify) |
1634 | final(pack_name, curr_pack, | |
1635 | index_name, curr_index, | |
1636 | keep_name, keep_msg, | |
1637 | pack_sha1); | |
1638 | else | |
1639 | close(input_fd); | |
9cf6d335 SV |
1640 | free(objects); |
1641 | free(index_name_buf); | |
b8077709 | 1642 | free(keep_name_buf); |
c85228ed | 1643 | if (pack_name == NULL) |
3bb72562 | 1644 | free((void *) curr_pack); |
c85228ed | 1645 | if (index_name == NULL) |
3bb72562 | 1646 | free((void *) curr_index); |
9cf6d335 SV |
1647 | |
1648 | return 0; | |
1649 | } |