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Commit | Line | Data |
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2ad9d4cb | 1 | #include "builtin.h" |
b2141fc1 | 2 | #include "config.h" |
9cf6d335 SV |
3 | #include "delta.h" |
4 | #include "pack.h" | |
5 | #include "csum-file.h" | |
8e440259 PE |
6 | #include "blob.h" |
7 | #include "commit.h" | |
8 | #include "tag.h" | |
9 | #include "tree.h" | |
96a02f8f | 10 | #include "progress.h" |
0153be05 | 11 | #include "fsck.h" |
d807c4a0 | 12 | #include "exec-cmd.h" |
4614043c | 13 | #include "streaming.h" |
b8a2486f | 14 | #include "thread-utils.h" |
4f39cd82 | 15 | #include "packfile.h" |
a80d72db | 16 | #include "object-store.h" |
b14ed5ad | 17 | #include "promisor-remote.h" |
9cf6d335 SV |
18 | |
19 | static const char index_pack_usage[] = | |
e337a04d | 20 | "git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])"; |
9cf6d335 | 21 | |
9cba13ca | 22 | struct object_entry { |
aa7e44bf | 23 | struct pack_idx_entry idx; |
2d477051 | 24 | unsigned long size; |
41730576 NTND |
25 | unsigned char hdr_size; |
26 | signed char type; | |
27 | signed char real_type; | |
9cf6d335 SV |
28 | }; |
29 | ||
41730576 | 30 | struct object_stat { |
38a45561 JH |
31 | unsigned delta_depth; |
32 | int base_object_no; | |
53dda6ff NP |
33 | }; |
34 | ||
f41aebd4 | 35 | struct base_data { |
b4718cae | 36 | /* Initialized by make_base(). */ |
4a438cab | 37 | struct base_data *base; |
03993e13 | 38 | struct object_entry *obj; |
2baad220 NTND |
39 | int ref_first, ref_last; |
40 | int ofs_first, ofs_last; | |
b4718cae JT |
41 | |
42 | /* Not initialized by make_base(). */ | |
43 | void *data; | |
44 | unsigned long size; | |
f41aebd4 SP |
45 | }; |
46 | ||
b8a2486f | 47 | struct thread_local { |
b8a2486f | 48 | pthread_t thread; |
b8a2486f | 49 | size_t base_cache_used; |
39539495 | 50 | int pack_fd; |
b8a2486f NTND |
51 | }; |
52 | ||
95308d64 | 53 | /* Remember to update object flag allocation in object.h */ |
0153be05 MK |
54 | #define FLAG_LINK (1u<<20) |
55 | #define FLAG_CHECKED (1u<<21) | |
56 | ||
c6458e60 NTND |
57 | struct ofs_delta_entry { |
58 | off_t offset; | |
59 | int obj_no; | |
60 | }; | |
61 | ||
62 | struct ref_delta_entry { | |
af8caf33 | 63 | struct object_id oid; |
636171cb | 64 | int obj_no; |
9cf6d335 SV |
65 | }; |
66 | ||
9cf6d335 | 67 | static struct object_entry *objects; |
41730576 | 68 | static struct object_stat *obj_stat; |
c6458e60 NTND |
69 | static struct ofs_delta_entry *ofs_deltas; |
70 | static struct ref_delta_entry *ref_deltas; | |
b8a2486f | 71 | static struct thread_local nothread_data; |
9cf6d335 | 72 | static int nr_objects; |
c6458e60 NTND |
73 | static int nr_ofs_deltas; |
74 | static int nr_ref_deltas; | |
75 | static int ref_deltas_alloc; | |
636171cb | 76 | static int nr_resolved_deltas; |
b8a2486f | 77 | static int nr_threads; |
9cf6d335 | 78 | |
e42797f5 | 79 | static int from_stdin; |
0153be05 | 80 | static int strict; |
c6807a40 | 81 | static int do_fsck_object; |
22410549 | 82 | static struct fsck_options fsck_options = FSCK_OPTIONS_STRICT; |
3c9af366 | 83 | static int verbose; |
e376f17f | 84 | static int show_resolving_progress; |
3aba2fdd | 85 | static int show_stat; |
c6807a40 | 86 | static int check_self_contained_and_connected; |
3c9af366 | 87 | |
dc6a0757 | 88 | static struct progress *progress; |
e42797f5 | 89 | |
2d477051 NP |
90 | /* We always read in 4kB chunks. */ |
91 | static unsigned char input_buffer[4096]; | |
d7dd0223 NP |
92 | static unsigned int input_offset, input_len; |
93 | static off_t consumed_bytes; | |
411481be | 94 | static off_t max_input_size; |
d1a0ed18 | 95 | static unsigned deepest_delta; |
454253f0 | 96 | static git_hash_ctx input_ctx; |
ee5743ce | 97 | static uint32_t input_crc32; |
39539495 NTND |
98 | static int input_fd, output_fd; |
99 | static const char *curr_pack; | |
2d477051 | 100 | |
b8a2486f NTND |
101 | static struct thread_local *thread_data; |
102 | static int nr_dispatched; | |
103 | static int threads_active; | |
104 | ||
105 | static pthread_mutex_t read_mutex; | |
106 | #define read_lock() lock_mutex(&read_mutex) | |
107 | #define read_unlock() unlock_mutex(&read_mutex) | |
108 | ||
109 | static pthread_mutex_t counter_mutex; | |
110 | #define counter_lock() lock_mutex(&counter_mutex) | |
111 | #define counter_unlock() unlock_mutex(&counter_mutex) | |
112 | ||
113 | static pthread_mutex_t work_mutex; | |
114 | #define work_lock() lock_mutex(&work_mutex) | |
115 | #define work_unlock() unlock_mutex(&work_mutex) | |
116 | ||
3aba2fdd NTND |
117 | static pthread_mutex_t deepest_delta_mutex; |
118 | #define deepest_delta_lock() lock_mutex(&deepest_delta_mutex) | |
119 | #define deepest_delta_unlock() unlock_mutex(&deepest_delta_mutex) | |
120 | ||
ab791dd1 JK |
121 | static pthread_mutex_t type_cas_mutex; |
122 | #define type_cas_lock() lock_mutex(&type_cas_mutex) | |
123 | #define type_cas_unlock() unlock_mutex(&type_cas_mutex) | |
124 | ||
b8a2486f NTND |
125 | static pthread_key_t key; |
126 | ||
127 | static inline void lock_mutex(pthread_mutex_t *mutex) | |
128 | { | |
129 | if (threads_active) | |
130 | pthread_mutex_lock(mutex); | |
131 | } | |
132 | ||
133 | static inline void unlock_mutex(pthread_mutex_t *mutex) | |
134 | { | |
135 | if (threads_active) | |
136 | pthread_mutex_unlock(mutex); | |
137 | } | |
138 | ||
139 | /* | |
140 | * Mutex and conditional variable can't be statically-initialized on Windows. | |
141 | */ | |
142 | static void init_thread(void) | |
143 | { | |
39539495 | 144 | int i; |
b8a2486f NTND |
145 | init_recursive_mutex(&read_mutex); |
146 | pthread_mutex_init(&counter_mutex, NULL); | |
147 | pthread_mutex_init(&work_mutex, NULL); | |
ab791dd1 | 148 | pthread_mutex_init(&type_cas_mutex, NULL); |
3aba2fdd NTND |
149 | if (show_stat) |
150 | pthread_mutex_init(&deepest_delta_mutex, NULL); | |
b8a2486f NTND |
151 | pthread_key_create(&key, NULL); |
152 | thread_data = xcalloc(nr_threads, sizeof(*thread_data)); | |
39539495 NTND |
153 | for (i = 0; i < nr_threads; i++) { |
154 | thread_data[i].pack_fd = open(curr_pack, O_RDONLY); | |
155 | if (thread_data[i].pack_fd == -1) | |
156 | die_errno(_("unable to open %s"), curr_pack); | |
157 | } | |
158 | ||
b8a2486f NTND |
159 | threads_active = 1; |
160 | } | |
161 | ||
162 | static void cleanup_thread(void) | |
163 | { | |
39539495 | 164 | int i; |
b8a2486f NTND |
165 | if (!threads_active) |
166 | return; | |
167 | threads_active = 0; | |
168 | pthread_mutex_destroy(&read_mutex); | |
169 | pthread_mutex_destroy(&counter_mutex); | |
170 | pthread_mutex_destroy(&work_mutex); | |
ab791dd1 | 171 | pthread_mutex_destroy(&type_cas_mutex); |
3aba2fdd NTND |
172 | if (show_stat) |
173 | pthread_mutex_destroy(&deepest_delta_mutex); | |
39539495 NTND |
174 | for (i = 0; i < nr_threads; i++) |
175 | close(thread_data[i].pack_fd); | |
b8a2486f NTND |
176 | pthread_key_delete(key); |
177 | free(thread_data); | |
178 | } | |
179 | ||
22410549 | 180 | static int mark_link(struct object *obj, int type, void *data, struct fsck_options *options) |
0153be05 MK |
181 | { |
182 | if (!obj) | |
183 | return -1; | |
184 | ||
185 | if (type != OBJ_ANY && obj->type != type) | |
f2fd0760 | 186 | die(_("object type mismatch at %s"), oid_to_hex(&obj->oid)); |
0153be05 MK |
187 | |
188 | obj->flags |= FLAG_LINK; | |
189 | return 0; | |
190 | } | |
191 | ||
192 | /* The content of each linked object must have been checked | |
193 | or it must be already present in the object database */ | |
c6807a40 | 194 | static unsigned check_object(struct object *obj) |
0153be05 MK |
195 | { |
196 | if (!obj) | |
c6807a40 | 197 | return 0; |
0153be05 MK |
198 | |
199 | if (!(obj->flags & FLAG_LINK)) | |
c6807a40 | 200 | return 0; |
0153be05 MK |
201 | |
202 | if (!(obj->flags & FLAG_CHECKED)) { | |
203 | unsigned long size; | |
0df8e965 | 204 | int type = oid_object_info(the_repository, &obj->oid, &size); |
77583e77 JK |
205 | if (type <= 0) |
206 | die(_("did not receive expected object %s"), | |
f2fd0760 | 207 | oid_to_hex(&obj->oid)); |
77583e77 JK |
208 | if (type != obj->type) |
209 | die(_("object %s: expected type %s, found %s"), | |
f2fd0760 | 210 | oid_to_hex(&obj->oid), |
debca9d2 | 211 | type_name(obj->type), type_name(type)); |
0153be05 | 212 | obj->flags |= FLAG_CHECKED; |
c6807a40 | 213 | return 1; |
0153be05 | 214 | } |
c6807a40 NTND |
215 | |
216 | return 0; | |
0153be05 MK |
217 | } |
218 | ||
c6807a40 | 219 | static unsigned check_objects(void) |
0153be05 | 220 | { |
c6807a40 | 221 | unsigned i, max, foreign_nr = 0; |
0153be05 MK |
222 | |
223 | max = get_max_object_index(); | |
79e3aa66 SG |
224 | |
225 | if (verbose) | |
226 | progress = start_delayed_progress(_("Checking objects"), max); | |
227 | ||
228 | for (i = 0; i < max; i++) { | |
c6807a40 | 229 | foreign_nr += check_object(get_indexed_object(i)); |
79e3aa66 SG |
230 | display_progress(progress, i + 1); |
231 | } | |
232 | ||
233 | stop_progress(&progress); | |
c6807a40 | 234 | return foreign_nr; |
0153be05 MK |
235 | } |
236 | ||
237 | ||
636171cb | 238 | /* Discard current buffer used content. */ |
a6e8a767 | 239 | static void flush(void) |
636171cb NP |
240 | { |
241 | if (input_offset) { | |
242 | if (output_fd >= 0) | |
243 | write_or_die(output_fd, input_buffer, input_offset); | |
454253f0 | 244 | the_hash_algo->update_fn(&input_ctx, input_buffer, input_offset); |
554a2636 | 245 | memmove(input_buffer, input_buffer + input_offset, input_len); |
636171cb NP |
246 | input_offset = 0; |
247 | } | |
248 | } | |
249 | ||
2d477051 NP |
250 | /* |
251 | * Make sure at least "min" bytes are available in the buffer, and | |
252 | * return the pointer to the buffer. | |
253 | */ | |
b89c4e93 | 254 | static void *fill(int min) |
9cf6d335 | 255 | { |
2d477051 NP |
256 | if (min <= input_len) |
257 | return input_buffer + input_offset; | |
258 | if (min > sizeof(input_buffer)) | |
c2b97ecf NTND |
259 | die(Q_("cannot fill %d byte", |
260 | "cannot fill %d bytes", | |
261 | min), | |
262 | min); | |
636171cb | 263 | flush(); |
2d477051 | 264 | do { |
8a912bcb | 265 | ssize_t ret = xread(input_fd, input_buffer + input_len, |
2d477051 NP |
266 | sizeof(input_buffer) - input_len); |
267 | if (ret <= 0) { | |
268 | if (!ret) | |
c2b97ecf NTND |
269 | die(_("early EOF")); |
270 | die_errno(_("read error on input")); | |
2d477051 NP |
271 | } |
272 | input_len += ret; | |
218558af NP |
273 | if (from_stdin) |
274 | display_throughput(progress, consumed_bytes + input_len); | |
2d477051 NP |
275 | } while (input_len < min); |
276 | return input_buffer; | |
277 | } | |
278 | ||
279 | static void use(int bytes) | |
280 | { | |
281 | if (bytes > input_len) | |
c2b97ecf | 282 | die(_("used more bytes than were available")); |
ee5743ce | 283 | input_crc32 = crc32(input_crc32, input_buffer + input_offset, bytes); |
2d477051 NP |
284 | input_len -= bytes; |
285 | input_offset += bytes; | |
d7dd0223 NP |
286 | |
287 | /* make sure off_t is sufficiently large not to wrap */ | |
c03c8315 | 288 | if (signed_add_overflows(consumed_bytes, bytes)) |
c2b97ecf | 289 | die(_("pack too large for current definition of off_t")); |
2d477051 | 290 | consumed_bytes += bytes; |
411481be JK |
291 | if (max_input_size && consumed_bytes > max_input_size) |
292 | die(_("pack exceeds maximum allowed size")); | |
2d477051 | 293 | } |
9cf6d335 | 294 | |
3bb72562 | 295 | static const char *open_pack_file(const char *pack_name) |
2d477051 | 296 | { |
e42797f5 NP |
297 | if (from_stdin) { |
298 | input_fd = 0; | |
299 | if (!pack_name) { | |
594fa999 JK |
300 | struct strbuf tmp_file = STRBUF_INIT; |
301 | output_fd = odb_mkstemp(&tmp_file, | |
6e180cdc | 302 | "pack/tmp_pack_XXXXXX"); |
594fa999 | 303 | pack_name = strbuf_detach(&tmp_file, NULL); |
892e723a | 304 | } else { |
e42797f5 | 305 | output_fd = open(pack_name, O_CREAT|O_EXCL|O_RDWR, 0600); |
892e723a JK |
306 | if (output_fd < 0) |
307 | die_errno(_("unable to create '%s'"), pack_name); | |
308 | } | |
39539495 | 309 | nothread_data.pack_fd = output_fd; |
e42797f5 NP |
310 | } else { |
311 | input_fd = open(pack_name, O_RDONLY); | |
312 | if (input_fd < 0) | |
c2b97ecf | 313 | die_errno(_("cannot open packfile '%s'"), pack_name); |
e42797f5 | 314 | output_fd = -1; |
39539495 | 315 | nothread_data.pack_fd = input_fd; |
e42797f5 | 316 | } |
454253f0 | 317 | the_hash_algo->init_fn(&input_ctx); |
e42797f5 | 318 | return pack_name; |
9cf6d335 SV |
319 | } |
320 | ||
321 | static void parse_pack_header(void) | |
322 | { | |
2d477051 | 323 | struct pack_header *hdr = fill(sizeof(struct pack_header)); |
9cf6d335 SV |
324 | |
325 | /* Header consistency check */ | |
9cf6d335 | 326 | if (hdr->hdr_signature != htonl(PACK_SIGNATURE)) |
c2b97ecf | 327 | die(_("pack signature mismatch")); |
d60fc1c8 | 328 | if (!pack_version_ok(hdr->hdr_version)) |
f350df42 | 329 | die(_("pack version %"PRIu32" unsupported"), |
6e1c2344 | 330 | ntohl(hdr->hdr_version)); |
9cf6d335 SV |
331 | |
332 | nr_objects = ntohl(hdr->hdr_entries); | |
2d477051 | 333 | use(sizeof(struct pack_header)); |
9cf6d335 SV |
334 | } |
335 | ||
fd3e6747 | 336 | static NORETURN void bad_object(off_t offset, const char *format, |
a4f3131c | 337 | ...) __attribute__((format (printf, 2, 3))); |
9cf6d335 | 338 | |
fd3e6747 | 339 | static NORETURN void bad_object(off_t offset, const char *format, ...) |
9cf6d335 SV |
340 | { |
341 | va_list params; | |
342 | char buf[1024]; | |
343 | ||
344 | va_start(params, format); | |
345 | vsnprintf(buf, sizeof(buf), format, params); | |
346 | va_end(params); | |
fd3e6747 NTND |
347 | die(_("pack has bad object at offset %"PRIuMAX": %s"), |
348 | (uintmax_t)offset, buf); | |
9cf6d335 SV |
349 | } |
350 | ||
b8a2486f NTND |
351 | static inline struct thread_local *get_thread_data(void) |
352 | { | |
2094c5e5 NTND |
353 | if (HAVE_THREADS) { |
354 | if (threads_active) | |
355 | return pthread_getspecific(key); | |
356 | assert(!threads_active && | |
357 | "This should only be reached when all threads are gone"); | |
358 | } | |
b8a2486f NTND |
359 | return ¬hread_data; |
360 | } | |
361 | ||
b8a2486f NTND |
362 | static void set_thread_data(struct thread_local *data) |
363 | { | |
364 | if (threads_active) | |
365 | pthread_setspecific(key, data); | |
366 | } | |
b8a2486f | 367 | |
6a87ed97 NP |
368 | static void free_base_data(struct base_data *c) |
369 | { | |
370 | if (c->data) { | |
6a83d902 | 371 | FREE_AND_NULL(c->data); |
b8a2486f | 372 | get_thread_data()->base_cache_used -= c->size; |
6a87ed97 NP |
373 | } |
374 | } | |
375 | ||
a7f7e84a | 376 | static void prune_base_data(struct base_data *youngest_child) |
92392b4a | 377 | { |
8e24cbae | 378 | struct base_data *b; |
b8a2486f | 379 | struct thread_local *data = get_thread_data(); |
a7f7e84a JT |
380 | struct base_data **ancestry = NULL; |
381 | size_t nr = 0, alloc = 0; | |
382 | ssize_t i; | |
383 | ||
384 | if (data->base_cache_used <= delta_base_cache_limit) | |
385 | return; | |
386 | ||
387 | /* | |
388 | * Free all ancestors of youngest_child until we have enough space, | |
389 | * starting with the oldest. (We cannot free youngest_child itself.) | |
390 | */ | |
391 | for (b = youngest_child->base; b != NULL; b = b->base) { | |
392 | ALLOC_GROW(ancestry, nr + 1, alloc); | |
393 | ancestry[nr++] = b; | |
92392b4a | 394 | } |
a7f7e84a JT |
395 | for (i = nr - 1; |
396 | i >= 0 && data->base_cache_used > delta_base_cache_limit; | |
397 | i--) { | |
398 | if (ancestry[i]->data) | |
399 | free_base_data(ancestry[i]); | |
400 | } | |
401 | free(ancestry); | |
92392b4a SP |
402 | } |
403 | ||
681b07de NTND |
404 | static int is_delta_type(enum object_type type) |
405 | { | |
406 | return (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA); | |
407 | } | |
408 | ||
da49a7da | 409 | static void *unpack_entry_data(off_t offset, unsigned long size, |
454253f0 | 410 | enum object_type type, struct object_id *oid) |
9cf6d335 | 411 | { |
9ec2dde9 | 412 | static char fixed_buf[8192]; |
7ce4721a | 413 | int status; |
ef49a7a0 | 414 | git_zstream stream; |
9ec2dde9 | 415 | void *buf; |
454253f0 | 416 | git_hash_ctx c; |
681b07de NTND |
417 | char hdr[32]; |
418 | int hdrlen; | |
419 | ||
420 | if (!is_delta_type(type)) { | |
ca473cef TB |
421 | hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX, |
422 | type_name(type),(uintmax_t)size) + 1; | |
454253f0 | 423 | the_hash_algo->init_fn(&c); |
424 | the_hash_algo->update_fn(&c, hdr, hdrlen); | |
681b07de | 425 | } else |
454253f0 | 426 | oid = NULL; |
9ec2dde9 NTND |
427 | if (type == OBJ_BLOB && size > big_file_threshold) |
428 | buf = fixed_buf; | |
429 | else | |
a1e920a0 | 430 | buf = xmallocz(size); |
9cf6d335 SV |
431 | |
432 | memset(&stream, 0, sizeof(stream)); | |
7ce4721a | 433 | git_inflate_init(&stream); |
9cf6d335 | 434 | stream.next_out = buf; |
9ec2dde9 | 435 | stream.avail_out = buf == fixed_buf ? sizeof(fixed_buf) : size; |
9cf6d335 | 436 | |
7ce4721a | 437 | do { |
681b07de | 438 | unsigned char *last_out = stream.next_out; |
2d477051 NP |
439 | stream.next_in = fill(1); |
440 | stream.avail_in = input_len; | |
7ce4721a NP |
441 | status = git_inflate(&stream, 0); |
442 | use(input_len - stream.avail_in); | |
454253f0 | 443 | if (oid) |
444 | the_hash_algo->update_fn(&c, last_out, stream.next_out - last_out); | |
9ec2dde9 NTND |
445 | if (buf == fixed_buf) { |
446 | stream.next_out = buf; | |
447 | stream.avail_out = sizeof(fixed_buf); | |
448 | } | |
7ce4721a NP |
449 | } while (status == Z_OK); |
450 | if (stream.total_out != size || status != Z_STREAM_END) | |
c2b97ecf | 451 | bad_object(offset, _("inflate returned %d"), status); |
39c68542 | 452 | git_inflate_end(&stream); |
454253f0 | 453 | if (oid) |
454 | the_hash_algo->final_fn(oid->hash, &c); | |
9ec2dde9 | 455 | return buf == fixed_buf ? NULL : buf; |
9cf6d335 SV |
456 | } |
457 | ||
681b07de | 458 | static void *unpack_raw_entry(struct object_entry *obj, |
c6458e60 | 459 | off_t *ofs_offset, |
454253f0 | 460 | struct object_id *ref_oid, |
461 | struct object_id *oid) | |
9cf6d335 | 462 | { |
48fb7deb LT |
463 | unsigned char *p; |
464 | unsigned long size, c; | |
d7dd0223 | 465 | off_t base_offset; |
9cf6d335 | 466 | unsigned shift; |
ee5743ce | 467 | void *data; |
9cf6d335 | 468 | |
aa7e44bf | 469 | obj->idx.offset = consumed_bytes; |
1e4cd68c | 470 | input_crc32 = crc32(0, NULL, 0); |
2d477051 NP |
471 | |
472 | p = fill(1); | |
473 | c = *p; | |
474 | use(1); | |
475 | obj->type = (c >> 4) & 7; | |
9cf6d335 SV |
476 | size = (c & 15); |
477 | shift = 4; | |
478 | while (c & 0x80) { | |
2d477051 NP |
479 | p = fill(1); |
480 | c = *p; | |
481 | use(1); | |
48fb7deb | 482 | size += (c & 0x7f) << shift; |
9cf6d335 SV |
483 | shift += 7; |
484 | } | |
2d477051 | 485 | obj->size = size; |
9cf6d335 | 486 | |
2d477051 | 487 | switch (obj->type) { |
eb32d236 | 488 | case OBJ_REF_DELTA: |
454253f0 | 489 | hashcpy(ref_oid->hash, fill(the_hash_algo->rawsz)); |
490 | use(the_hash_algo->rawsz); | |
53dda6ff NP |
491 | break; |
492 | case OBJ_OFS_DELTA: | |
2d477051 NP |
493 | p = fill(1); |
494 | c = *p; | |
495 | use(1); | |
53dda6ff NP |
496 | base_offset = c & 127; |
497 | while (c & 128) { | |
498 | base_offset += 1; | |
8723f216 | 499 | if (!base_offset || MSB(base_offset, 7)) |
c2b97ecf | 500 | bad_object(obj->idx.offset, _("offset value overflow for delta base object")); |
2d477051 NP |
501 | p = fill(1); |
502 | c = *p; | |
503 | use(1); | |
53dda6ff NP |
504 | base_offset = (base_offset << 7) + (c & 127); |
505 | } | |
c6458e60 NTND |
506 | *ofs_offset = obj->idx.offset - base_offset; |
507 | if (*ofs_offset <= 0 || *ofs_offset >= obj->idx.offset) | |
c2b97ecf | 508 | bad_object(obj->idx.offset, _("delta base offset is out of bound")); |
53dda6ff | 509 | break; |
9cf6d335 SV |
510 | case OBJ_COMMIT: |
511 | case OBJ_TREE: | |
512 | case OBJ_BLOB: | |
513 | case OBJ_TAG: | |
9cf6d335 SV |
514 | break; |
515 | default: | |
c2b97ecf | 516 | bad_object(obj->idx.offset, _("unknown object type %d"), obj->type); |
9cf6d335 | 517 | } |
aa7e44bf | 518 | obj->hdr_size = consumed_bytes - obj->idx.offset; |
2d477051 | 519 | |
454253f0 | 520 | data = unpack_entry_data(obj->idx.offset, obj->size, obj->type, oid); |
aa7e44bf | 521 | obj->idx.crc32 = input_crc32; |
ee5743ce | 522 | return data; |
2d477051 NP |
523 | } |
524 | ||
8a2e163c NTND |
525 | static void *unpack_data(struct object_entry *obj, |
526 | int (*consume)(const unsigned char *, unsigned long, void *), | |
527 | void *cb_data) | |
2d477051 | 528 | { |
a91ef6e7 | 529 | off_t from = obj[0].idx.offset + obj[0].hdr_size; |
7171a0b0 | 530 | off_t len = obj[1].idx.offset - from; |
776ea370 | 531 | unsigned char *data, *inbuf; |
ef49a7a0 | 532 | git_zstream stream; |
776ea370 | 533 | int status; |
9cf6d335 | 534 | |
a1e920a0 | 535 | data = xmallocz(consume ? 64*1024 : obj->size); |
7171a0b0 | 536 | inbuf = xmalloc((len < 64*1024) ? (int)len : 64*1024); |
776ea370 | 537 | |
2d477051 | 538 | memset(&stream, 0, sizeof(stream)); |
776ea370 | 539 | git_inflate_init(&stream); |
2d477051 | 540 | stream.next_out = data; |
8a2e163c | 541 | stream.avail_out = consume ? 64*1024 : obj->size; |
776ea370 NP |
542 | |
543 | do { | |
7171a0b0 | 544 | ssize_t n = (len < 64*1024) ? (ssize_t)len : 64*1024; |
53f52cd9 | 545 | n = xpread(get_thread_data()->pack_fd, inbuf, n, from); |
776ea370 | 546 | if (n < 0) |
c2b97ecf | 547 | die_errno(_("cannot pread pack file")); |
776ea370 | 548 | if (!n) |
7171a0b0 NTND |
549 | die(Q_("premature end of pack file, %"PRIuMAX" byte missing", |
550 | "premature end of pack file, %"PRIuMAX" bytes missing", | |
551 | (unsigned int)len), | |
552 | (uintmax_t)len); | |
776ea370 NP |
553 | from += n; |
554 | len -= n; | |
555 | stream.next_in = inbuf; | |
556 | stream.avail_in = n; | |
f8b09038 JK |
557 | if (!consume) |
558 | status = git_inflate(&stream, 0); | |
559 | else { | |
560 | do { | |
561 | status = git_inflate(&stream, 0); | |
562 | if (consume(data, stream.next_out - data, cb_data)) { | |
563 | free(inbuf); | |
564 | free(data); | |
565 | return NULL; | |
566 | } | |
567 | stream.next_out = data; | |
568 | stream.avail_out = 64*1024; | |
569 | } while (status == Z_OK && stream.avail_in); | |
8a2e163c | 570 | } |
776ea370 NP |
571 | } while (len && status == Z_OK && !stream.avail_in); |
572 | ||
573 | /* This has been inflated OK when first encountered, so... */ | |
574 | if (status != Z_STREAM_END || stream.total_out != obj->size) | |
c2b97ecf | 575 | die(_("serious inflate inconsistency")); |
776ea370 NP |
576 | |
577 | git_inflate_end(&stream); | |
578 | free(inbuf); | |
8a2e163c | 579 | if (consume) { |
6a83d902 | 580 | FREE_AND_NULL(data); |
8a2e163c | 581 | } |
9cf6d335 SV |
582 | return data; |
583 | } | |
584 | ||
8a2e163c NTND |
585 | static void *get_data_from_pack(struct object_entry *obj) |
586 | { | |
587 | return unpack_data(obj, NULL, NULL); | |
588 | } | |
589 | ||
c6458e60 NTND |
590 | static int compare_ofs_delta_bases(off_t offset1, off_t offset2, |
591 | enum object_type type1, | |
592 | enum object_type type2) | |
7218a215 JH |
593 | { |
594 | int cmp = type1 - type2; | |
595 | if (cmp) | |
596 | return cmp; | |
f0e7f11d JK |
597 | return offset1 < offset2 ? -1 : |
598 | offset1 > offset2 ? 1 : | |
599 | 0; | |
7218a215 JH |
600 | } |
601 | ||
fc968e26 | 602 | static int find_ofs_delta(const off_t offset) |
9cf6d335 | 603 | { |
c6458e60 NTND |
604 | int first = 0, last = nr_ofs_deltas; |
605 | ||
606 | while (first < last) { | |
19716b21 | 607 | int next = first + (last - first) / 2; |
c6458e60 NTND |
608 | struct ofs_delta_entry *delta = &ofs_deltas[next]; |
609 | int cmp; | |
610 | ||
611 | cmp = compare_ofs_delta_bases(offset, delta->offset, | |
fc968e26 JT |
612 | OBJ_OFS_DELTA, |
613 | objects[delta->obj_no].type); | |
c6458e60 NTND |
614 | if (!cmp) |
615 | return next; | |
616 | if (cmp < 0) { | |
617 | last = next; | |
618 | continue; | |
619 | } | |
620 | first = next+1; | |
621 | } | |
622 | return -first-1; | |
9cf6d335 SV |
623 | } |
624 | ||
c6458e60 | 625 | static void find_ofs_delta_children(off_t offset, |
fc968e26 | 626 | int *first_index, int *last_index) |
9cf6d335 | 627 | { |
fc968e26 | 628 | int first = find_ofs_delta(offset); |
9cf6d335 | 629 | int last = first; |
c6458e60 | 630 | int end = nr_ofs_deltas - 1; |
9cf6d335 | 631 | |
6a87ed97 NP |
632 | if (first < 0) { |
633 | *first_index = 0; | |
634 | *last_index = -1; | |
635 | return; | |
636 | } | |
c6458e60 | 637 | while (first > 0 && ofs_deltas[first - 1].offset == offset) |
9cf6d335 | 638 | --first; |
c6458e60 NTND |
639 | while (last < end && ofs_deltas[last + 1].offset == offset) |
640 | ++last; | |
641 | *first_index = first; | |
642 | *last_index = last; | |
643 | } | |
644 | ||
af8caf33 | 645 | static int compare_ref_delta_bases(const struct object_id *oid1, |
646 | const struct object_id *oid2, | |
c6458e60 NTND |
647 | enum object_type type1, |
648 | enum object_type type2) | |
649 | { | |
650 | int cmp = type1 - type2; | |
651 | if (cmp) | |
652 | return cmp; | |
af8caf33 | 653 | return oidcmp(oid1, oid2); |
c6458e60 NTND |
654 | } |
655 | ||
fc968e26 | 656 | static int find_ref_delta(const struct object_id *oid) |
c6458e60 NTND |
657 | { |
658 | int first = 0, last = nr_ref_deltas; | |
659 | ||
660 | while (first < last) { | |
19716b21 | 661 | int next = first + (last - first) / 2; |
c6458e60 NTND |
662 | struct ref_delta_entry *delta = &ref_deltas[next]; |
663 | int cmp; | |
664 | ||
af8caf33 | 665 | cmp = compare_ref_delta_bases(oid, &delta->oid, |
fc968e26 JT |
666 | OBJ_REF_DELTA, |
667 | objects[delta->obj_no].type); | |
c6458e60 NTND |
668 | if (!cmp) |
669 | return next; | |
670 | if (cmp < 0) { | |
671 | last = next; | |
672 | continue; | |
673 | } | |
674 | first = next+1; | |
675 | } | |
676 | return -first-1; | |
677 | } | |
678 | ||
af8caf33 | 679 | static void find_ref_delta_children(const struct object_id *oid, |
fc968e26 | 680 | int *first_index, int *last_index) |
c6458e60 | 681 | { |
fc968e26 | 682 | int first = find_ref_delta(oid); |
c6458e60 NTND |
683 | int last = first; |
684 | int end = nr_ref_deltas - 1; | |
685 | ||
686 | if (first < 0) { | |
687 | *first_index = 0; | |
688 | *last_index = -1; | |
689 | return; | |
690 | } | |
4a7e27e9 | 691 | while (first > 0 && oideq(&ref_deltas[first - 1].oid, oid)) |
c6458e60 | 692 | --first; |
4a7e27e9 | 693 | while (last < end && oideq(&ref_deltas[last + 1].oid, oid)) |
9cf6d335 SV |
694 | ++last; |
695 | *first_index = first; | |
696 | *last_index = last; | |
9cf6d335 SV |
697 | } |
698 | ||
4614043c NTND |
699 | struct compare_data { |
700 | struct object_entry *entry; | |
701 | struct git_istream *st; | |
702 | unsigned char *buf; | |
703 | unsigned long buf_size; | |
704 | }; | |
705 | ||
706 | static int compare_objects(const unsigned char *buf, unsigned long size, | |
707 | void *cb_data) | |
708 | { | |
709 | struct compare_data *data = cb_data; | |
710 | ||
711 | if (data->buf_size < size) { | |
712 | free(data->buf); | |
713 | data->buf = xmalloc(size); | |
714 | data->buf_size = size; | |
715 | } | |
716 | ||
717 | while (size) { | |
718 | ssize_t len = read_istream(data->st, data->buf, size); | |
719 | if (len == 0) | |
720 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
e6a492b7 | 721 | oid_to_hex(&data->entry->idx.oid)); |
4614043c NTND |
722 | if (len < 0) |
723 | die(_("unable to read %s"), | |
e6a492b7 | 724 | oid_to_hex(&data->entry->idx.oid)); |
4614043c NTND |
725 | if (memcmp(buf, data->buf, len)) |
726 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
e6a492b7 | 727 | oid_to_hex(&data->entry->idx.oid)); |
4614043c NTND |
728 | size -= len; |
729 | buf += len; | |
730 | } | |
731 | return 0; | |
732 | } | |
733 | ||
734 | static int check_collison(struct object_entry *entry) | |
735 | { | |
736 | struct compare_data data; | |
737 | enum object_type type; | |
738 | unsigned long size; | |
739 | ||
740 | if (entry->size <= big_file_threshold || entry->type != OBJ_BLOB) | |
741 | return -1; | |
742 | ||
743 | memset(&data, 0, sizeof(data)); | |
744 | data.entry = entry; | |
c8123e72 MT |
745 | data.st = open_istream(the_repository, &entry->idx.oid, &type, &size, |
746 | NULL); | |
4614043c NTND |
747 | if (!data.st) |
748 | return -1; | |
749 | if (size != entry->size || type != entry->type) | |
750 | die(_("SHA1 COLLISION FOUND WITH %s !"), | |
e6a492b7 | 751 | oid_to_hex(&entry->idx.oid)); |
4614043c NTND |
752 | unpack_data(entry, compare_objects, &data); |
753 | close_istream(data.st); | |
754 | free(data.buf); | |
755 | return 0; | |
756 | } | |
757 | ||
9ec2dde9 NTND |
758 | static void sha1_object(const void *data, struct object_entry *obj_entry, |
759 | unsigned long size, enum object_type type, | |
3e930981 | 760 | const struct object_id *oid) |
9cf6d335 | 761 | { |
9ec2dde9 | 762 | void *new_data = NULL; |
29401e15 | 763 | int collision_test_needed = 0; |
9ec2dde9 NTND |
764 | |
765 | assert(data || obj_entry); | |
766 | ||
29401e15 JK |
767 | if (startup_info->have_repository) { |
768 | read_lock(); | |
e83e71c5 | 769 | collision_test_needed = |
98374a07 | 770 | has_object_file_with_flags(oid, OBJECT_INFO_QUICK); |
29401e15 JK |
771 | read_unlock(); |
772 | } | |
4614043c NTND |
773 | |
774 | if (collision_test_needed && !data) { | |
775 | read_lock(); | |
776 | if (!check_collison(obj_entry)) | |
777 | collision_test_needed = 0; | |
778 | read_unlock(); | |
779 | } | |
780 | if (collision_test_needed) { | |
8685da42 NP |
781 | void *has_data; |
782 | enum object_type has_type; | |
783 | unsigned long has_size; | |
4614043c | 784 | read_lock(); |
0df8e965 | 785 | has_type = oid_object_info(the_repository, oid, &has_size); |
51054177 | 786 | if (has_type < 0) |
3e930981 | 787 | die(_("cannot read existing object info %s"), oid_to_hex(oid)); |
4614043c | 788 | if (has_type != type || has_size != size) |
3e930981 | 789 | die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid)); |
b4f5aca4 | 790 | has_data = read_object_file(oid, &has_type, &has_size); |
b8a2486f | 791 | read_unlock(); |
4614043c NTND |
792 | if (!data) |
793 | data = new_data = get_data_from_pack(obj_entry); | |
8685da42 | 794 | if (!has_data) |
3e930981 | 795 | die(_("cannot read existing object %s"), oid_to_hex(oid)); |
8685da42 NP |
796 | if (size != has_size || type != has_type || |
797 | memcmp(data, has_data, size) != 0) | |
3e930981 | 798 | die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid)); |
bbf4b41b | 799 | free(has_data); |
4614043c | 800 | } |
b8a2486f | 801 | |
ffb2c0fe | 802 | if (strict || do_fsck_object) { |
b8a2486f | 803 | read_lock(); |
0153be05 | 804 | if (type == OBJ_BLOB) { |
da14a7ff | 805 | struct blob *blob = lookup_blob(the_repository, oid); |
0153be05 MK |
806 | if (blob) |
807 | blob->object.flags |= FLAG_CHECKED; | |
808 | else | |
3e930981 | 809 | die(_("invalid blob object %s"), oid_to_hex(oid)); |
73c3f0f7 JK |
810 | if (do_fsck_object && |
811 | fsck_object(&blob->object, (void *)data, size, &fsck_options)) | |
812 | die(_("fsck error in packed object")); | |
0153be05 MK |
813 | } else { |
814 | struct object *obj; | |
815 | int eaten; | |
816 | void *buf = (void *) data; | |
817 | ||
920734b0 | 818 | assert(data && "data can only be NULL for large _blobs_"); |
9ec2dde9 | 819 | |
0153be05 MK |
820 | /* |
821 | * we do not need to free the memory here, as the | |
822 | * buf is deleted by the caller. | |
823 | */ | |
1ec5bfd2 SB |
824 | obj = parse_object_buffer(the_repository, oid, type, |
825 | size, buf, | |
c251c83d | 826 | &eaten); |
0153be05 | 827 | if (!obj) |
debca9d2 | 828 | die(_("invalid %s"), type_name(type)); |
c6807a40 | 829 | if (do_fsck_object && |
22410549 | 830 | fsck_object(obj, buf, size, &fsck_options)) |
db5a58c1 | 831 | die(_("fsck error in packed object")); |
ffb2c0fe | 832 | if (strict && fsck_walk(obj, NULL, &fsck_options)) |
f2fd0760 | 833 | die(_("Not all child objects of %s are reachable"), oid_to_hex(&obj->oid)); |
0153be05 MK |
834 | |
835 | if (obj->type == OBJ_TREE) { | |
836 | struct tree *item = (struct tree *) obj; | |
837 | item->buffer = NULL; | |
6e454b9a | 838 | obj->parsed = 0; |
0153be05 MK |
839 | } |
840 | if (obj->type == OBJ_COMMIT) { | |
841 | struct commit *commit = (struct commit *) obj; | |
8597ea3a | 842 | if (detach_commit_buffer(commit, NULL) != data) |
033abf97 | 843 | BUG("parse_object_buffer transmogrified our buffer"); |
0153be05 MK |
844 | } |
845 | obj->flags |= FLAG_CHECKED; | |
846 | } | |
b8a2486f | 847 | read_unlock(); |
0153be05 | 848 | } |
9ec2dde9 NTND |
849 | |
850 | free(new_data); | |
9cf6d335 SV |
851 | } |
852 | ||
20e95d0a NTND |
853 | /* |
854 | * This function is part of find_unresolved_deltas(). There are two | |
855 | * walkers going in the opposite ways. | |
856 | * | |
857 | * The first one in find_unresolved_deltas() traverses down from | |
858 | * parent node to children, deflating nodes along the way. However, | |
859 | * memory for deflated nodes is limited by delta_base_cache_limit, so | |
860 | * at some point parent node's deflated content may be freed. | |
861 | * | |
862 | * The second walker is this function, which goes from current node up | |
863 | * to top parent if necessary to deflate the node. In normal | |
864 | * situation, its parent node would be already deflated, so it just | |
865 | * needs to apply delta. | |
866 | * | |
867 | * In the worst case scenario, parent node is no longer deflated because | |
868 | * we're running out of delta_base_cache_limit; we need to re-deflate | |
869 | * parents, possibly up to the top base. | |
870 | * | |
871 | * All deflated objects here are subject to be freed if we exceed | |
872 | * delta_base_cache_limit, just like in find_unresolved_deltas(), we | |
873 | * just need to make sure the last node is not freed. | |
874 | */ | |
92392b4a SP |
875 | static void *get_base_data(struct base_data *c) |
876 | { | |
877 | if (!c->data) { | |
878 | struct object_entry *obj = c->obj; | |
20e95d0a NTND |
879 | struct base_data **delta = NULL; |
880 | int delta_nr = 0, delta_alloc = 0; | |
92392b4a | 881 | |
20e95d0a NTND |
882 | while (is_delta_type(c->obj->type) && !c->data) { |
883 | ALLOC_GROW(delta, delta_nr + 1, delta_alloc); | |
884 | delta[delta_nr++] = c; | |
885 | c = c->base; | |
886 | } | |
887 | if (!delta_nr) { | |
888 | c->data = get_data_from_pack(obj); | |
889 | c->size = obj->size; | |
b8a2486f | 890 | get_thread_data()->base_cache_used += c->size; |
20e95d0a NTND |
891 | prune_base_data(c); |
892 | } | |
893 | for (; delta_nr > 0; delta_nr--) { | |
894 | void *base, *raw; | |
895 | c = delta[delta_nr - 1]; | |
896 | obj = c->obj; | |
897 | base = get_base_data(c->base); | |
898 | raw = get_data_from_pack(obj); | |
92392b4a SP |
899 | c->data = patch_delta( |
900 | base, c->base->size, | |
901 | raw, obj->size, | |
902 | &c->size); | |
903 | free(raw); | |
904 | if (!c->data) | |
c2b97ecf | 905 | bad_object(obj->idx.offset, _("failed to apply delta")); |
b8a2486f | 906 | get_thread_data()->base_cache_used += c->size; |
20e95d0a | 907 | prune_base_data(c); |
9441b61d | 908 | } |
20e95d0a | 909 | free(delta); |
92392b4a SP |
910 | } |
911 | return c->data; | |
912 | } | |
913 | ||
b4718cae JT |
914 | static struct base_data *make_base(struct object_entry *obj, |
915 | struct base_data *parent) | |
9cf6d335 | 916 | { |
b4718cae JT |
917 | struct base_data *base = xcalloc(1, sizeof(struct base_data)); |
918 | base->base = parent; | |
919 | base->obj = obj; | |
920 | find_ref_delta_children(&obj->idx.oid, | |
921 | &base->ref_first, &base->ref_last); | |
922 | find_ofs_delta_children(obj->idx.offset, | |
923 | &base->ofs_first, &base->ofs_last); | |
924 | return base; | |
925 | } | |
926 | ||
927 | static struct base_data *resolve_delta(struct object_entry *delta_obj, | |
928 | struct base_data *base) | |
929 | { | |
ee6f0583 | 930 | void *delta_data, *result_data; |
b4718cae JT |
931 | struct base_data *result; |
932 | unsigned long result_size; | |
9cf6d335 | 933 | |
3aba2fdd | 934 | if (show_stat) { |
41730576 NTND |
935 | int i = delta_obj - objects; |
936 | int j = base->obj - objects; | |
937 | obj_stat[i].delta_depth = obj_stat[j].delta_depth + 1; | |
3aba2fdd | 938 | deepest_delta_lock(); |
41730576 NTND |
939 | if (deepest_delta < obj_stat[i].delta_depth) |
940 | deepest_delta = obj_stat[i].delta_depth; | |
3aba2fdd | 941 | deepest_delta_unlock(); |
41730576 | 942 | obj_stat[i].base_object_no = j; |
3aba2fdd | 943 | } |
636171cb | 944 | delta_data = get_data_from_pack(delta_obj); |
ee6f0583 JT |
945 | assert(base->data); |
946 | result_data = patch_delta(base->data, base->size, | |
b4718cae | 947 | delta_data, delta_obj->size, &result_size); |
9cf6d335 | 948 | free(delta_data); |
b4718cae | 949 | if (!result_data) |
c2b97ecf | 950 | bad_object(delta_obj->idx.offset, _("failed to apply delta")); |
b4718cae | 951 | hash_object_file(the_hash_algo, result_data, result_size, |
169c9c01 | 952 | type_name(delta_obj->real_type), &delta_obj->idx.oid); |
b4718cae | 953 | sha1_object(result_data, NULL, result_size, delta_obj->real_type, |
3e930981 | 954 | &delta_obj->idx.oid); |
b4718cae JT |
955 | |
956 | result = make_base(delta_obj, base); | |
957 | if (result->ref_last == -1 && result->ofs_last == -1) { | |
958 | free(result_data); | |
959 | } else { | |
960 | result->data = result_data; | |
961 | result->size = result_size; | |
962 | get_thread_data()->base_cache_used += result->size; | |
963 | prune_base_data(result); | |
964 | } | |
965 | ||
b8a2486f | 966 | counter_lock(); |
636171cb | 967 | nr_resolved_deltas++; |
b8a2486f | 968 | counter_unlock(); |
b4718cae JT |
969 | |
970 | return result; | |
9441b61d NP |
971 | } |
972 | ||
ab791dd1 JK |
973 | /* |
974 | * Standard boolean compare-and-swap: atomically check whether "*type" is | |
975 | * "want"; if so, swap in "set" and return true. Otherwise, leave it untouched | |
976 | * and return false. | |
977 | */ | |
41730576 | 978 | static int compare_and_swap_type(signed char *type, |
ab791dd1 JK |
979 | enum object_type want, |
980 | enum object_type set) | |
981 | { | |
982 | enum object_type old; | |
983 | ||
984 | type_cas_lock(); | |
985 | old = *type; | |
986 | if (old == want) | |
987 | *type = set; | |
988 | type_cas_unlock(); | |
989 | ||
990 | return old == want; | |
991 | } | |
992 | ||
2baad220 NTND |
993 | static struct base_data *find_unresolved_deltas_1(struct base_data *base, |
994 | struct base_data *prev_base) | |
9441b61d | 995 | { |
2baad220 | 996 | if (base->ref_first <= base->ref_last) { |
c6458e60 | 997 | struct object_entry *child = objects + ref_deltas[base->ref_first].obj_no; |
b4718cae | 998 | struct base_data *result; |
7218a215 | 999 | |
ab791dd1 JK |
1000 | if (!compare_and_swap_type(&child->real_type, OBJ_REF_DELTA, |
1001 | base->obj->real_type)) | |
a2178101 JK |
1002 | die("REF_DELTA at offset %"PRIuMAX" already resolved (duplicate base %s?)", |
1003 | (uintmax_t)child->idx.offset, | |
1004 | oid_to_hex(&base->obj->idx.oid)); | |
ab791dd1 | 1005 | |
ee6f0583 | 1006 | get_base_data(base); |
b4718cae | 1007 | result = resolve_delta(child, base); |
2baad220 | 1008 | if (base->ref_first == base->ref_last && base->ofs_last == -1) |
7218a215 | 1009 | free_base_data(base); |
2baad220 NTND |
1010 | |
1011 | base->ref_first++; | |
1012 | return result; | |
53dda6ff NP |
1013 | } |
1014 | ||
2baad220 | 1015 | if (base->ofs_first <= base->ofs_last) { |
c6458e60 | 1016 | struct object_entry *child = objects + ofs_deltas[base->ofs_first].obj_no; |
b4718cae | 1017 | struct base_data *result; |
7218a215 JH |
1018 | |
1019 | assert(child->real_type == OBJ_OFS_DELTA); | |
ab791dd1 | 1020 | child->real_type = base->obj->real_type; |
ee6f0583 | 1021 | get_base_data(base); |
b4718cae | 1022 | result = resolve_delta(child, base); |
2baad220 | 1023 | if (base->ofs_first == base->ofs_last) |
7218a215 | 1024 | free_base_data(base); |
2baad220 NTND |
1025 | |
1026 | base->ofs_first++; | |
1027 | return result; | |
9cf6d335 | 1028 | } |
53dda6ff | 1029 | |
b4718cae | 1030 | free_base_data(base); |
2baad220 NTND |
1031 | return NULL; |
1032 | } | |
1033 | ||
1034 | static void find_unresolved_deltas(struct base_data *base) | |
1035 | { | |
1036 | struct base_data *new_base, *prev_base = NULL; | |
1037 | for (;;) { | |
1038 | new_base = find_unresolved_deltas_1(base, prev_base); | |
1039 | ||
1040 | if (new_base) { | |
1041 | prev_base = base; | |
1042 | base = new_base; | |
1043 | } else { | |
1044 | free(base); | |
1045 | base = prev_base; | |
1046 | if (!base) | |
1047 | return; | |
1048 | prev_base = base->base; | |
1049 | } | |
1050 | } | |
9cf6d335 SV |
1051 | } |
1052 | ||
c6458e60 | 1053 | static int compare_ofs_delta_entry(const void *a, const void *b) |
9cf6d335 | 1054 | { |
c6458e60 NTND |
1055 | const struct ofs_delta_entry *delta_a = a; |
1056 | const struct ofs_delta_entry *delta_b = b; | |
7218a215 | 1057 | |
f0e7f11d JK |
1058 | return delta_a->offset < delta_b->offset ? -1 : |
1059 | delta_a->offset > delta_b->offset ? 1 : | |
1060 | 0; | |
c6458e60 NTND |
1061 | } |
1062 | ||
1063 | static int compare_ref_delta_entry(const void *a, const void *b) | |
9cf6d335 | 1064 | { |
c6458e60 NTND |
1065 | const struct ref_delta_entry *delta_a = a; |
1066 | const struct ref_delta_entry *delta_b = b; | |
7218a215 | 1067 | |
af8caf33 | 1068 | return oidcmp(&delta_a->oid, &delta_b->oid); |
9cf6d335 SV |
1069 | } |
1070 | ||
5272f755 NTND |
1071 | static void resolve_base(struct object_entry *obj) |
1072 | { | |
b4718cae JT |
1073 | struct base_data *base_obj = make_base(obj, NULL); |
1074 | ||
5272f755 NTND |
1075 | find_unresolved_deltas(base_obj); |
1076 | } | |
1077 | ||
b8a2486f NTND |
1078 | static void *threaded_second_pass(void *data) |
1079 | { | |
1080 | set_thread_data(data); | |
1081 | for (;;) { | |
1082 | int i; | |
8f82aad4 | 1083 | counter_lock(); |
b8a2486f | 1084 | display_progress(progress, nr_resolved_deltas); |
8f82aad4 TR |
1085 | counter_unlock(); |
1086 | work_lock(); | |
b8a2486f NTND |
1087 | while (nr_dispatched < nr_objects && |
1088 | is_delta_type(objects[nr_dispatched].type)) | |
1089 | nr_dispatched++; | |
1090 | if (nr_dispatched >= nr_objects) { | |
1091 | work_unlock(); | |
1092 | break; | |
1093 | } | |
1094 | i = nr_dispatched++; | |
1095 | work_unlock(); | |
1096 | ||
1097 | resolve_base(&objects[i]); | |
1098 | } | |
1099 | return NULL; | |
1100 | } | |
b8a2486f | 1101 | |
5272f755 NTND |
1102 | /* |
1103 | * First pass: | |
1104 | * - find locations of all objects; | |
1105 | * - calculate SHA1 of all non-delta objects; | |
1106 | * - remember base (SHA1 or offset) for all deltas. | |
1107 | */ | |
454253f0 | 1108 | static void parse_pack_objects(unsigned char *hash) |
9cf6d335 | 1109 | { |
9ec2dde9 | 1110 | int i, nr_delays = 0; |
c6458e60 | 1111 | struct ofs_delta_entry *ofs_delta = ofs_deltas; |
454253f0 | 1112 | struct object_id ref_delta_oid; |
2d477051 | 1113 | struct stat st; |
9cf6d335 | 1114 | |
13aaf148 | 1115 | if (verbose) |
29e63ed3 | 1116 | progress = start_progress( |
c2b97ecf | 1117 | from_stdin ? _("Receiving objects") : _("Indexing objects"), |
29e63ed3 | 1118 | nr_objects); |
9cf6d335 SV |
1119 | for (i = 0; i < nr_objects; i++) { |
1120 | struct object_entry *obj = &objects[i]; | |
c6458e60 | 1121 | void *data = unpack_raw_entry(obj, &ofs_delta->offset, |
454253f0 | 1122 | &ref_delta_oid, |
1123 | &obj->idx.oid); | |
9cf6d335 | 1124 | obj->real_type = obj->type; |
c6458e60 NTND |
1125 | if (obj->type == OBJ_OFS_DELTA) { |
1126 | nr_ofs_deltas++; | |
1127 | ofs_delta->obj_no = i; | |
1128 | ofs_delta++; | |
1129 | } else if (obj->type == OBJ_REF_DELTA) { | |
1130 | ALLOC_GROW(ref_deltas, nr_ref_deltas + 1, ref_deltas_alloc); | |
af8caf33 | 1131 | oidcpy(&ref_deltas[nr_ref_deltas].oid, &ref_delta_oid); |
c6458e60 NTND |
1132 | ref_deltas[nr_ref_deltas].obj_no = i; |
1133 | nr_ref_deltas++; | |
9ec2dde9 NTND |
1134 | } else if (!data) { |
1135 | /* large blobs, check later */ | |
1136 | obj->real_type = OBJ_BAD; | |
1137 | nr_delays++; | |
9cf6d335 | 1138 | } else |
e6a492b7 | 1139 | sha1_object(data, NULL, obj->size, obj->type, |
3e930981 | 1140 | &obj->idx.oid); |
9cf6d335 | 1141 | free(data); |
4d4fcc54 | 1142 | display_progress(progress, i+1); |
9cf6d335 | 1143 | } |
aa7e44bf | 1144 | objects[i].idx.offset = consumed_bytes; |
4d4fcc54 | 1145 | stop_progress(&progress); |
2d477051 NP |
1146 | |
1147 | /* Check pack integrity */ | |
636171cb | 1148 | flush(); |
454253f0 | 1149 | the_hash_algo->final_fn(hash, &input_ctx); |
67947c34 | 1150 | if (!hasheq(fill(the_hash_algo->rawsz), hash)) |
c2b97ecf | 1151 | die(_("pack is corrupted (SHA1 mismatch)")); |
454253f0 | 1152 | use(the_hash_algo->rawsz); |
2d477051 NP |
1153 | |
1154 | /* If input_fd is a file, we should have reached its end now. */ | |
1155 | if (fstat(input_fd, &st)) | |
c2b97ecf | 1156 | die_errno(_("cannot fstat packfile")); |
fa257b05 JS |
1157 | if (S_ISREG(st.st_mode) && |
1158 | lseek(input_fd, 0, SEEK_CUR) - input_len != st.st_size) | |
c2b97ecf | 1159 | die(_("pack has junk at the end")); |
9ec2dde9 NTND |
1160 | |
1161 | for (i = 0; i < nr_objects; i++) { | |
1162 | struct object_entry *obj = &objects[i]; | |
1163 | if (obj->real_type != OBJ_BAD) | |
1164 | continue; | |
1165 | obj->real_type = obj->type; | |
e6a492b7 | 1166 | sha1_object(NULL, obj, obj->size, obj->type, |
3e930981 | 1167 | &obj->idx.oid); |
9ec2dde9 NTND |
1168 | nr_delays--; |
1169 | } | |
1170 | if (nr_delays) | |
1171 | die(_("confusion beyond insanity in parse_pack_objects()")); | |
5272f755 NTND |
1172 | } |
1173 | ||
1174 | /* | |
1175 | * Second pass: | |
1176 | * - for all non-delta objects, look if it is used as a base for | |
1177 | * deltas; | |
1178 | * - if used as a base, uncompress the object and apply all deltas, | |
1179 | * recursively checking if the resulting object is used as a base | |
1180 | * for some more deltas. | |
1181 | */ | |
1182 | static void resolve_deltas(void) | |
1183 | { | |
1184 | int i; | |
9cf6d335 | 1185 | |
c6458e60 | 1186 | if (!nr_ofs_deltas && !nr_ref_deltas) |
3c9af366 NP |
1187 | return; |
1188 | ||
53dda6ff | 1189 | /* Sort deltas by base SHA1/offset for fast searching */ |
9ed0d8d6 RS |
1190 | QSORT(ofs_deltas, nr_ofs_deltas, compare_ofs_delta_entry); |
1191 | QSORT(ref_deltas, nr_ref_deltas, compare_ref_delta_entry); | |
9cf6d335 | 1192 | |
e376f17f | 1193 | if (verbose || show_resolving_progress) |
c6458e60 NTND |
1194 | progress = start_progress(_("Resolving deltas"), |
1195 | nr_ref_deltas + nr_ofs_deltas); | |
b8a2486f | 1196 | |
b8a2486f NTND |
1197 | nr_dispatched = 0; |
1198 | if (nr_threads > 1 || getenv("GIT_FORCE_THREADS")) { | |
1199 | init_thread(); | |
1200 | for (i = 0; i < nr_threads; i++) { | |
1201 | int ret = pthread_create(&thread_data[i].thread, NULL, | |
1202 | threaded_second_pass, thread_data + i); | |
1203 | if (ret) | |
f350df42 NTND |
1204 | die(_("unable to create thread: %s"), |
1205 | strerror(ret)); | |
b8a2486f NTND |
1206 | } |
1207 | for (i = 0; i < nr_threads; i++) | |
1208 | pthread_join(thread_data[i].thread, NULL); | |
1209 | cleanup_thread(); | |
1210 | return; | |
1211 | } | |
46e6fb1e | 1212 | threaded_second_pass(¬hread_data); |
636171cb NP |
1213 | } |
1214 | ||
5272f755 NTND |
1215 | /* |
1216 | * Third pass: | |
1217 | * - append objects to convert thin pack to full pack if required | |
454253f0 | 1218 | * - write the final pack hash |
5272f755 | 1219 | */ |
98a3beab | 1220 | static void fix_unresolved_deltas(struct hashfile *f); |
454253f0 | 1221 | static void conclude_pack(int fix_thin_pack, const char *curr_pack, unsigned char *pack_hash) |
5272f755 | 1222 | { |
c6458e60 | 1223 | if (nr_ref_deltas + nr_ofs_deltas == nr_resolved_deltas) { |
5272f755 | 1224 | stop_progress(&progress); |
454253f0 | 1225 | /* Flush remaining pack final hash. */ |
5272f755 NTND |
1226 | flush(); |
1227 | return; | |
1228 | } | |
1229 | ||
1230 | if (fix_thin_pack) { | |
98a3beab | 1231 | struct hashfile *f; |
454253f0 | 1232 | unsigned char read_hash[GIT_MAX_RAWSZ], tail_hash[GIT_MAX_RAWSZ]; |
5c3459fc | 1233 | struct strbuf msg = STRBUF_INIT; |
c6458e60 | 1234 | int nr_unresolved = nr_ofs_deltas + nr_ref_deltas - nr_resolved_deltas; |
5272f755 NTND |
1235 | int nr_objects_initial = nr_objects; |
1236 | if (nr_unresolved <= 0) | |
cc13431a | 1237 | die(_("confusion beyond insanity")); |
2756ca43 | 1238 | REALLOC_ARRAY(objects, nr_objects + nr_unresolved + 1); |
57165db0 JK |
1239 | memset(objects + nr_objects + 1, 0, |
1240 | nr_unresolved * sizeof(*objects)); | |
98a3beab | 1241 | f = hashfd(output_fd, curr_pack); |
781d9306 | 1242 | fix_unresolved_deltas(f); |
71d99b81 VA |
1243 | strbuf_addf(&msg, Q_("completed with %d local object", |
1244 | "completed with %d local objects", | |
1245 | nr_objects - nr_objects_initial), | |
5c3459fc NTND |
1246 | nr_objects - nr_objects_initial); |
1247 | stop_progress_msg(&progress, msg.buf); | |
1248 | strbuf_release(&msg); | |
f2af9f5e | 1249 | finalize_hashfile(f, tail_hash, 0); |
454253f0 | 1250 | hashcpy(read_hash, pack_hash); |
1251 | fixup_pack_header_footer(output_fd, pack_hash, | |
5272f755 | 1252 | curr_pack, nr_objects, |
454253f0 | 1253 | read_hash, consumed_bytes-the_hash_algo->rawsz); |
67947c34 | 1254 | if (!hasheq(read_hash, tail_hash)) |
f350df42 NTND |
1255 | die(_("Unexpected tail checksum for %s " |
1256 | "(disk corruption?)"), curr_pack); | |
5272f755 | 1257 | } |
c6458e60 | 1258 | if (nr_ofs_deltas + nr_ref_deltas != nr_resolved_deltas) |
cc13431a JH |
1259 | die(Q_("pack has %d unresolved delta", |
1260 | "pack has %d unresolved deltas", | |
c6458e60 NTND |
1261 | nr_ofs_deltas + nr_ref_deltas - nr_resolved_deltas), |
1262 | nr_ofs_deltas + nr_ref_deltas - nr_resolved_deltas); | |
5272f755 NTND |
1263 | } |
1264 | ||
98a3beab | 1265 | static int write_compressed(struct hashfile *f, void *in, unsigned int size) |
636171cb | 1266 | { |
ef49a7a0 | 1267 | git_zstream stream; |
7734d7f2 NP |
1268 | int status; |
1269 | unsigned char outbuf[4096]; | |
636171cb | 1270 | |
55bb5c91 | 1271 | git_deflate_init(&stream, zlib_compression_level); |
636171cb NP |
1272 | stream.next_in = in; |
1273 | stream.avail_in = size; | |
636171cb | 1274 | |
7734d7f2 NP |
1275 | do { |
1276 | stream.next_out = outbuf; | |
1277 | stream.avail_out = sizeof(outbuf); | |
55bb5c91 | 1278 | status = git_deflate(&stream, Z_FINISH); |
98a3beab | 1279 | hashwrite(f, outbuf, sizeof(outbuf) - stream.avail_out); |
7734d7f2 NP |
1280 | } while (status == Z_OK); |
1281 | ||
1282 | if (status != Z_STREAM_END) | |
c2b97ecf | 1283 | die(_("unable to deflate appended object (%d)"), status); |
636171cb | 1284 | size = stream.total_out; |
55bb5c91 | 1285 | git_deflate_end(&stream); |
636171cb NP |
1286 | return size; |
1287 | } | |
1288 | ||
98a3beab | 1289 | static struct object_entry *append_obj_to_pack(struct hashfile *f, |
03993e13 | 1290 | const unsigned char *sha1, void *buf, |
636171cb NP |
1291 | unsigned long size, enum object_type type) |
1292 | { | |
1293 | struct object_entry *obj = &objects[nr_objects++]; | |
1294 | unsigned char header[10]; | |
1295 | unsigned long s = size; | |
1296 | int n = 0; | |
1297 | unsigned char c = (type << 4) | (s & 15); | |
1298 | s >>= 4; | |
1299 | while (s) { | |
1300 | header[n++] = c | 0x80; | |
1301 | c = s & 0x7f; | |
1302 | s >>= 7; | |
1303 | } | |
1304 | header[n++] = c; | |
8522148f | 1305 | crc32_begin(f); |
98a3beab | 1306 | hashwrite(f, header, n); |
72de2883 BS |
1307 | obj[0].size = size; |
1308 | obj[0].hdr_size = n; | |
1309 | obj[0].type = type; | |
1310 | obj[0].real_type = type; | |
aa7e44bf | 1311 | obj[1].idx.offset = obj[0].idx.offset + n; |
8522148f NP |
1312 | obj[1].idx.offset += write_compressed(f, buf, size); |
1313 | obj[0].idx.crc32 = crc32_end(f); | |
98a3beab | 1314 | hashflush(f); |
e6a492b7 | 1315 | hashcpy(obj->idx.oid.hash, sha1); |
03993e13 | 1316 | return obj; |
636171cb NP |
1317 | } |
1318 | ||
1319 | static int delta_pos_compare(const void *_a, const void *_b) | |
1320 | { | |
c6458e60 NTND |
1321 | struct ref_delta_entry *a = *(struct ref_delta_entry **)_a; |
1322 | struct ref_delta_entry *b = *(struct ref_delta_entry **)_b; | |
636171cb NP |
1323 | return a->obj_no - b->obj_no; |
1324 | } | |
9cf6d335 | 1325 | |
98a3beab | 1326 | static void fix_unresolved_deltas(struct hashfile *f) |
636171cb | 1327 | { |
c6458e60 | 1328 | struct ref_delta_entry **sorted_by_pos; |
781d9306 | 1329 | int i; |
636171cb NP |
1330 | |
1331 | /* | |
1332 | * Since many unresolved deltas may well be themselves base objects | |
1333 | * for more unresolved deltas, we really want to include the | |
1334 | * smallest number of base objects that would cover as much delta | |
1335 | * as possible by picking the | |
1336 | * trunc deltas first, allowing for other deltas to resolve without | |
1337 | * additional base objects. Since most base objects are to be found | |
1338 | * before deltas depending on them, a good heuristic is to start | |
1339 | * resolving deltas in the same order as their position in the pack. | |
1340 | */ | |
b32fa95f | 1341 | ALLOC_ARRAY(sorted_by_pos, nr_ref_deltas); |
c6458e60 | 1342 | for (i = 0; i < nr_ref_deltas; i++) |
781d9306 | 1343 | sorted_by_pos[i] = &ref_deltas[i]; |
9ed0d8d6 | 1344 | QSORT(sorted_by_pos, nr_ref_deltas, delta_pos_compare); |
636171cb | 1345 | |
b14ed5ad | 1346 | if (has_promisor_remote()) { |
8a30a1ef JT |
1347 | /* |
1348 | * Prefetch the delta bases. | |
1349 | */ | |
1350 | struct oid_array to_fetch = OID_ARRAY_INIT; | |
1351 | for (i = 0; i < nr_ref_deltas; i++) { | |
1352 | struct ref_delta_entry *d = sorted_by_pos[i]; | |
1353 | if (!oid_object_info_extended(the_repository, &d->oid, | |
1354 | NULL, | |
1355 | OBJECT_INFO_FOR_PREFETCH)) | |
1356 | continue; | |
1357 | oid_array_append(&to_fetch, &d->oid); | |
1358 | } | |
db7ed741 JT |
1359 | promisor_remote_get_direct(the_repository, |
1360 | to_fetch.oid, to_fetch.nr); | |
8a30a1ef JT |
1361 | oid_array_clear(&to_fetch); |
1362 | } | |
1363 | ||
781d9306 | 1364 | for (i = 0; i < nr_ref_deltas; i++) { |
c6458e60 | 1365 | struct ref_delta_entry *d = sorted_by_pos[i]; |
21666f1a | 1366 | enum object_type type; |
b4718cae JT |
1367 | struct base_data *base; |
1368 | void *data; | |
1369 | unsigned long size; | |
1370 | struct object_entry *obj; | |
636171cb NP |
1371 | |
1372 | if (objects[d->obj_no].real_type != OBJ_REF_DELTA) | |
1373 | continue; | |
b4718cae JT |
1374 | data = read_object_file(&d->oid, &type, &size); |
1375 | if (!data) | |
636171cb | 1376 | continue; |
636171cb | 1377 | |
b98d1885 | 1378 | if (check_object_signature(the_repository, &d->oid, |
b4718cae | 1379 | data, size, |
b98d1885 | 1380 | type_name(type))) |
af8caf33 | 1381 | die(_("local object %s is corrupt"), oid_to_hex(&d->oid)); |
b4718cae JT |
1382 | obj = append_obj_to_pack(f, d->oid.hash, data, size, type); |
1383 | base = make_base(obj, NULL); | |
1384 | base->data = data; | |
1385 | base->size = size; | |
1386 | find_unresolved_deltas(base); | |
4d4fcc54 | 1387 | display_progress(progress, nr_resolved_deltas); |
636171cb NP |
1388 | } |
1389 | free(sorted_by_pos); | |
1390 | } | |
1391 | ||
8e29c7c3 JT |
1392 | static const char *derive_filename(const char *pack_name, const char *suffix, |
1393 | struct strbuf *buf) | |
1394 | { | |
1395 | size_t len; | |
1396 | if (!strip_suffix(pack_name, ".pack", &len)) | |
1397 | die(_("packfile name '%s' does not end with '.pack'"), | |
1398 | pack_name); | |
1399 | strbuf_add(buf, pack_name, len); | |
1400 | strbuf_addch(buf, '.'); | |
1401 | strbuf_addstr(buf, suffix); | |
1402 | return buf->buf; | |
1403 | } | |
1404 | ||
1405 | static void write_special_file(const char *suffix, const char *msg, | |
0fd90dab | 1406 | const char *pack_name, const unsigned char *hash, |
8e29c7c3 JT |
1407 | const char **report) |
1408 | { | |
1409 | struct strbuf name_buf = STRBUF_INIT; | |
1410 | const char *filename; | |
1411 | int fd; | |
1412 | int msg_len = strlen(msg); | |
1413 | ||
1414 | if (pack_name) | |
1415 | filename = derive_filename(pack_name, suffix, &name_buf); | |
1416 | else | |
0fd90dab | 1417 | filename = odb_pack_name(&name_buf, hash, suffix); |
8e29c7c3 JT |
1418 | |
1419 | fd = odb_pack_keep(filename); | |
1420 | if (fd < 0) { | |
1421 | if (errno != EEXIST) | |
1422 | die_errno(_("cannot write %s file '%s'"), | |
1423 | suffix, filename); | |
1424 | } else { | |
1425 | if (msg_len > 0) { | |
1426 | write_or_die(fd, msg, msg_len); | |
1427 | write_or_die(fd, "\n", 1); | |
1428 | } | |
1429 | if (close(fd) != 0) | |
1430 | die_errno(_("cannot close written %s file '%s'"), | |
1431 | suffix, filename); | |
88e2f9ed JT |
1432 | if (report) |
1433 | *report = suffix; | |
8e29c7c3 JT |
1434 | } |
1435 | strbuf_release(&name_buf); | |
1436 | } | |
1437 | ||
e42797f5 NP |
1438 | static void final(const char *final_pack_name, const char *curr_pack_name, |
1439 | const char *final_index_name, const char *curr_index_name, | |
88e2f9ed | 1440 | const char *keep_msg, const char *promisor_msg, |
454253f0 | 1441 | unsigned char *hash) |
e42797f5 | 1442 | { |
3a55602e | 1443 | const char *report = "pack"; |
f2075480 JK |
1444 | struct strbuf pack_name = STRBUF_INIT; |
1445 | struct strbuf index_name = STRBUF_INIT; | |
e42797f5 NP |
1446 | int err; |
1447 | ||
1448 | if (!from_stdin) { | |
1449 | close(input_fd); | |
1450 | } else { | |
4c81b03e | 1451 | fsync_or_die(output_fd, curr_pack_name); |
e42797f5 NP |
1452 | err = close(output_fd); |
1453 | if (err) | |
c2b97ecf | 1454 | die_errno(_("error while closing pack file")); |
e42797f5 NP |
1455 | } |
1456 | ||
8e29c7c3 | 1457 | if (keep_msg) |
0fd90dab | 1458 | write_special_file("keep", keep_msg, final_pack_name, hash, |
8e29c7c3 | 1459 | &report); |
88e2f9ed JT |
1460 | if (promisor_msg) |
1461 | write_special_file("promisor", promisor_msg, final_pack_name, | |
0fd90dab | 1462 | hash, NULL); |
b8077709 | 1463 | |
e42797f5 | 1464 | if (final_pack_name != curr_pack_name) { |
ba47a308 | 1465 | if (!final_pack_name) |
454253f0 | 1466 | final_pack_name = odb_pack_name(&pack_name, hash, "pack"); |
cb5add58 | 1467 | if (finalize_object_file(curr_pack_name, final_pack_name)) |
c2b97ecf | 1468 | die(_("cannot store pack file")); |
fb8b1936 | 1469 | } else if (from_stdin) |
33b65030 | 1470 | chmod(final_pack_name, 0444); |
e42797f5 | 1471 | |
e42797f5 | 1472 | if (final_index_name != curr_index_name) { |
ba47a308 | 1473 | if (!final_index_name) |
454253f0 | 1474 | final_index_name = odb_pack_name(&index_name, hash, "idx"); |
cb5add58 | 1475 | if (finalize_object_file(curr_index_name, final_index_name)) |
c2b97ecf | 1476 | die(_("cannot store index file")); |
fb8b1936 JH |
1477 | } else |
1478 | chmod(final_index_name, 0444); | |
576162a4 | 1479 | |
368b4e59 JK |
1480 | if (do_fsck_object) { |
1481 | struct packed_git *p; | |
1482 | p = add_packed_git(final_index_name, strlen(final_index_name), 0); | |
1483 | if (p) | |
549ca8aa | 1484 | install_packed_git(the_repository, p); |
368b4e59 | 1485 | } |
73c3f0f7 | 1486 | |
576162a4 | 1487 | if (!from_stdin) { |
69fa3370 | 1488 | printf("%s\n", hash_to_hex(hash)); |
576162a4 | 1489 | } else { |
5b1ef2ce JK |
1490 | struct strbuf buf = STRBUF_INIT; |
1491 | ||
69fa3370 | 1492 | strbuf_addf(&buf, "%s\t%s\n", report, hash_to_hex(hash)); |
5b1ef2ce JK |
1493 | write_or_die(1, buf.buf, buf.len); |
1494 | strbuf_release(&buf); | |
576162a4 NP |
1495 | |
1496 | /* | |
1497 | * Let's just mimic git-unpack-objects here and write | |
1498 | * the last part of the input buffer to stdout. | |
1499 | */ | |
1500 | while (input_len) { | |
1501 | err = xwrite(1, input_buffer + input_offset, input_len); | |
1502 | if (err <= 0) | |
1503 | break; | |
1504 | input_len -= err; | |
1505 | input_offset += err; | |
1506 | } | |
1507 | } | |
ba47a308 | 1508 | |
f2075480 JK |
1509 | strbuf_release(&index_name); |
1510 | strbuf_release(&pack_name); | |
9cf6d335 SV |
1511 | } |
1512 | ||
ef90d6d4 | 1513 | static int git_index_pack_config(const char *k, const char *v, void *cb) |
4d00bda2 | 1514 | { |
ebcfb379 JH |
1515 | struct pack_idx_option *opts = cb; |
1516 | ||
4d00bda2 | 1517 | if (!strcmp(k, "pack.indexversion")) { |
ebcfb379 JH |
1518 | opts->version = git_config_int(k, v); |
1519 | if (opts->version > 2) | |
f350df42 | 1520 | die(_("bad pack.indexversion=%"PRIu32), opts->version); |
4d00bda2 NP |
1521 | return 0; |
1522 | } | |
b8a2486f NTND |
1523 | if (!strcmp(k, "pack.threads")) { |
1524 | nr_threads = git_config_int(k, v); | |
1525 | if (nr_threads < 0) | |
f350df42 | 1526 | die(_("invalid number of threads specified (%d)"), |
b8a2486f | 1527 | nr_threads); |
2094c5e5 | 1528 | if (!HAVE_THREADS && nr_threads != 1) { |
f350df42 | 1529 | warning(_("no threads support, ignoring %s"), k); |
2094c5e5 NTND |
1530 | nr_threads = 1; |
1531 | } | |
b8a2486f NTND |
1532 | return 0; |
1533 | } | |
ef90d6d4 | 1534 | return git_default_config(k, v, cb); |
4d00bda2 NP |
1535 | } |
1536 | ||
3c9fc074 JH |
1537 | static int cmp_uint32(const void *a_, const void *b_) |
1538 | { | |
1539 | uint32_t a = *((uint32_t *)a_); | |
1540 | uint32_t b = *((uint32_t *)b_); | |
1541 | ||
1542 | return (a < b) ? -1 : (a != b); | |
1543 | } | |
1544 | ||
1545 | static void read_v2_anomalous_offsets(struct packed_git *p, | |
1546 | struct pack_idx_option *opts) | |
1547 | { | |
1548 | const uint32_t *idx1, *idx2; | |
1549 | uint32_t i; | |
1550 | ||
1551 | /* The address of the 4-byte offset table */ | |
629dffc4 | 1552 | idx1 = (((const uint32_t *)((const uint8_t *)p->index_data + p->crc_offset)) |
3c9fc074 JH |
1553 | + p->num_objects /* CRC32 table */ |
1554 | ); | |
1555 | ||
1556 | /* The address of the 8-byte offset table */ | |
1557 | idx2 = idx1 + p->num_objects; | |
1558 | ||
1559 | for (i = 0; i < p->num_objects; i++) { | |
1560 | uint32_t off = ntohl(idx1[i]); | |
1561 | if (!(off & 0x80000000)) | |
1562 | continue; | |
1563 | off = off & 0x7fffffff; | |
47fe3f6e | 1564 | check_pack_index_ptr(p, &idx2[off * 2]); |
3c9fc074 JH |
1565 | if (idx2[off * 2]) |
1566 | continue; | |
1567 | /* | |
1568 | * The real offset is ntohl(idx2[off * 2]) in high 4 | |
1569 | * octets, and ntohl(idx2[off * 2 + 1]) in low 4 | |
1570 | * octets. But idx2[off * 2] is Zero!!! | |
1571 | */ | |
1572 | ALLOC_GROW(opts->anomaly, opts->anomaly_nr + 1, opts->anomaly_alloc); | |
1573 | opts->anomaly[opts->anomaly_nr++] = ntohl(idx2[off * 2 + 1]); | |
1574 | } | |
1575 | ||
1b5294de | 1576 | QSORT(opts->anomaly, opts->anomaly_nr, cmp_uint32); |
3c9fc074 JH |
1577 | } |
1578 | ||
e337a04d JH |
1579 | static void read_idx_option(struct pack_idx_option *opts, const char *pack_name) |
1580 | { | |
1581 | struct packed_git *p = add_packed_git(pack_name, strlen(pack_name), 1); | |
1582 | ||
1583 | if (!p) | |
c2b97ecf | 1584 | die(_("Cannot open existing pack file '%s'"), pack_name); |
e337a04d | 1585 | if (open_pack_index(p)) |
c2b97ecf | 1586 | die(_("Cannot open existing pack idx file for '%s'"), pack_name); |
e337a04d JH |
1587 | |
1588 | /* Read the attributes from the existing idx file */ | |
1589 | opts->version = p->index_version; | |
1590 | ||
3c9fc074 JH |
1591 | if (opts->version == 2) |
1592 | read_v2_anomalous_offsets(p, opts); | |
1593 | ||
e337a04d JH |
1594 | /* |
1595 | * Get rid of the idx file as we do not need it anymore. | |
1596 | * NEEDSWORK: extract this bit from free_pack_by_name() in | |
fc1395f4 | 1597 | * sha1-file.c, perhaps? It shouldn't matter very much as we |
e337a04d JH |
1598 | * know we haven't installed this pack (hence we never have |
1599 | * read anything from it). | |
1600 | */ | |
1601 | close_pack_index(p); | |
1602 | free(p); | |
1603 | } | |
1604 | ||
38a45561 JH |
1605 | static void show_pack_info(int stat_only) |
1606 | { | |
c6458e60 | 1607 | int i, baseobjects = nr_objects - nr_ref_deltas - nr_ofs_deltas; |
d1a0ed18 JH |
1608 | unsigned long *chain_histogram = NULL; |
1609 | ||
1610 | if (deepest_delta) | |
1611 | chain_histogram = xcalloc(deepest_delta, sizeof(unsigned long)); | |
1612 | ||
38a45561 JH |
1613 | for (i = 0; i < nr_objects; i++) { |
1614 | struct object_entry *obj = &objects[i]; | |
1615 | ||
d1a0ed18 | 1616 | if (is_delta_type(obj->type)) |
41730576 | 1617 | chain_histogram[obj_stat[i].delta_depth - 1]++; |
38a45561 JH |
1618 | if (stat_only) |
1619 | continue; | |
ca473cef | 1620 | printf("%s %-6s %"PRIuMAX" %"PRIuMAX" %"PRIuMAX, |
e6a492b7 | 1621 | oid_to_hex(&obj->idx.oid), |
ca473cef TB |
1622 | type_name(obj->real_type), (uintmax_t)obj->size, |
1623 | (uintmax_t)(obj[1].idx.offset - obj->idx.offset), | |
38a45561 JH |
1624 | (uintmax_t)obj->idx.offset); |
1625 | if (is_delta_type(obj->type)) { | |
41730576 | 1626 | struct object_entry *bobj = &objects[obj_stat[i].base_object_no]; |
e6a492b7 | 1627 | printf(" %u %s", obj_stat[i].delta_depth, |
1628 | oid_to_hex(&bobj->idx.oid)); | |
38a45561 JH |
1629 | } |
1630 | putchar('\n'); | |
1631 | } | |
d1a0ed18 JH |
1632 | |
1633 | if (baseobjects) | |
c2b97ecf NTND |
1634 | printf_ln(Q_("non delta: %d object", |
1635 | "non delta: %d objects", | |
1636 | baseobjects), | |
1637 | baseobjects); | |
d1a0ed18 JH |
1638 | for (i = 0; i < deepest_delta; i++) { |
1639 | if (!chain_histogram[i]) | |
1640 | continue; | |
c2b97ecf NTND |
1641 | printf_ln(Q_("chain length = %d: %lu object", |
1642 | "chain length = %d: %lu objects", | |
1643 | chain_histogram[i]), | |
1644 | i + 1, | |
1645 | chain_histogram[i]); | |
d1a0ed18 | 1646 | } |
38a45561 JH |
1647 | } |
1648 | ||
3bb72562 | 1649 | int cmd_index_pack(int argc, const char **argv, const char *prefix) |
9cf6d335 | 1650 | { |
3aba2fdd | 1651 | int i, fix_thin_pack = 0, verify = 0, stat_only = 0; |
39539495 | 1652 | const char *curr_index; |
3bb72562 | 1653 | const char *index_name = NULL, *pack_name = NULL; |
8e29c7c3 | 1654 | const char *keep_msg = NULL; |
88e2f9ed | 1655 | const char *promisor_msg = NULL; |
8e29c7c3 | 1656 | struct strbuf index_name_buf = STRBUF_INIT; |
aa7e44bf | 1657 | struct pack_idx_entry **idx_objects; |
ebcfb379 | 1658 | struct pack_idx_option opts; |
454253f0 | 1659 | unsigned char pack_hash[GIT_MAX_RAWSZ]; |
c6807a40 | 1660 | unsigned foreign_nr = 1; /* zero is a "good" value, assume bad */ |
83558686 | 1661 | int report_end_of_input = 0; |
586740aa | 1662 | int hash_algo = 0; |
9cf6d335 | 1663 | |
8b4c0103 | 1664 | /* |
8a30a1ef JT |
1665 | * index-pack never needs to fetch missing objects except when |
1666 | * REF_DELTA bases are missing (which are explicitly handled). It only | |
1667 | * accesses the repo to do hash collision checks and to check which | |
1668 | * REF_DELTA bases need to be fetched. | |
8b4c0103 JT |
1669 | */ |
1670 | fetch_if_missing = 0; | |
1671 | ||
99caeed0 JN |
1672 | if (argc == 2 && !strcmp(argv[1], "-h")) |
1673 | usage(index_pack_usage); | |
1674 | ||
6ebd1caf | 1675 | read_replace_refs = 0; |
22410549 | 1676 | fsck_options.walk = mark_link; |
6e2a09d2 | 1677 | |
ebcfb379 JH |
1678 | reset_pack_idx_option(&opts); |
1679 | git_config(git_index_pack_config, &opts); | |
3f8099fc | 1680 | if (prefix && chdir(prefix)) |
c2b97ecf | 1681 | die(_("Cannot come back to cwd")); |
4d00bda2 | 1682 | |
9cf6d335 | 1683 | for (i = 1; i < argc; i++) { |
3bb72562 | 1684 | const char *arg = argv[i]; |
9cf6d335 SV |
1685 | |
1686 | if (*arg == '-') { | |
e42797f5 NP |
1687 | if (!strcmp(arg, "--stdin")) { |
1688 | from_stdin = 1; | |
636171cb NP |
1689 | } else if (!strcmp(arg, "--fix-thin")) { |
1690 | fix_thin_pack = 1; | |
72885a6d | 1691 | } else if (skip_to_optional_arg(arg, "--strict", &arg)) { |
5d477a33 JS |
1692 | strict = 1; |
1693 | do_fsck_object = 1; | |
1694 | fsck_set_msg_types(&fsck_options, arg); | |
c6807a40 NTND |
1695 | } else if (!strcmp(arg, "--check-self-contained-and-connected")) { |
1696 | strict = 1; | |
1697 | check_self_contained_and_connected = 1; | |
ffb2c0fe JT |
1698 | } else if (!strcmp(arg, "--fsck-objects")) { |
1699 | do_fsck_object = 1; | |
e337a04d JH |
1700 | } else if (!strcmp(arg, "--verify")) { |
1701 | verify = 1; | |
38a45561 JH |
1702 | } else if (!strcmp(arg, "--verify-stat")) { |
1703 | verify = 1; | |
3aba2fdd | 1704 | show_stat = 1; |
38a45561 JH |
1705 | } else if (!strcmp(arg, "--verify-stat-only")) { |
1706 | verify = 1; | |
3aba2fdd | 1707 | show_stat = 1; |
38a45561 | 1708 | stat_only = 1; |
72885a6d CC |
1709 | } else if (skip_to_optional_arg(arg, "--keep", &keep_msg)) { |
1710 | ; /* nothing to do */ | |
f3d618d2 JH |
1711 | } else if (skip_to_optional_arg(arg, "--promisor", &promisor_msg)) { |
1712 | ; /* already parsed */ | |
59556548 | 1713 | } else if (starts_with(arg, "--threads=")) { |
b8a2486f NTND |
1714 | char *end; |
1715 | nr_threads = strtoul(arg+10, &end, 0); | |
1716 | if (!arg[10] || *end || nr_threads < 0) | |
1717 | usage(index_pack_usage); | |
2094c5e5 NTND |
1718 | if (!HAVE_THREADS && nr_threads != 1) { |
1719 | warning(_("no threads support, ignoring %s"), arg); | |
1720 | nr_threads = 1; | |
1721 | } | |
59556548 | 1722 | } else if (starts_with(arg, "--pack_header=")) { |
bed006fb NP |
1723 | struct pack_header *hdr; |
1724 | char *c; | |
1725 | ||
1726 | hdr = (struct pack_header *)input_buffer; | |
1727 | hdr->hdr_signature = htonl(PACK_SIGNATURE); | |
1728 | hdr->hdr_version = htonl(strtoul(arg + 14, &c, 10)); | |
1729 | if (*c != ',') | |
c2b97ecf | 1730 | die(_("bad %s"), arg); |
bed006fb NP |
1731 | hdr->hdr_entries = htonl(strtoul(c + 1, &c, 10)); |
1732 | if (*c) | |
c2b97ecf | 1733 | die(_("bad %s"), arg); |
bed006fb | 1734 | input_len = sizeof(*hdr); |
3c9af366 NP |
1735 | } else if (!strcmp(arg, "-v")) { |
1736 | verbose = 1; | |
e376f17f JK |
1737 | } else if (!strcmp(arg, "--show-resolving-progress")) { |
1738 | show_resolving_progress = 1; | |
83558686 JK |
1739 | } else if (!strcmp(arg, "--report-end-of-input")) { |
1740 | report_end_of_input = 1; | |
e42797f5 | 1741 | } else if (!strcmp(arg, "-o")) { |
9cf6d335 SV |
1742 | if (index_name || (i+1) >= argc) |
1743 | usage(index_pack_usage); | |
1744 | index_name = argv[++i]; | |
59556548 | 1745 | } else if (starts_with(arg, "--index-version=")) { |
4ba7d711 | 1746 | char *c; |
ebcfb379 JH |
1747 | opts.version = strtoul(arg + 16, &c, 10); |
1748 | if (opts.version > 2) | |
c2b97ecf | 1749 | die(_("bad %s"), arg); |
4ba7d711 | 1750 | if (*c == ',') |
ebcfb379 JH |
1751 | opts.off32_limit = strtoul(c+1, &c, 0); |
1752 | if (*c || opts.off32_limit & 0x80000000) | |
c2b97ecf | 1753 | die(_("bad %s"), arg); |
411481be JK |
1754 | } else if (skip_prefix(arg, "--max-input-size=", &arg)) { |
1755 | max_input_size = strtoumax(arg, NULL, 10); | |
586740aa | 1756 | } else if (skip_prefix(arg, "--object-format=", &arg)) { |
1757 | hash_algo = hash_algo_by_name(arg); | |
1758 | if (hash_algo == GIT_HASH_UNKNOWN) | |
1759 | die(_("unknown hash algorithm '%s'"), arg); | |
1760 | repo_set_hash_algo(the_repository, hash_algo); | |
9cf6d335 SV |
1761 | } else |
1762 | usage(index_pack_usage); | |
1763 | continue; | |
1764 | } | |
1765 | ||
1766 | if (pack_name) | |
1767 | usage(index_pack_usage); | |
1768 | pack_name = arg; | |
1769 | } | |
1770 | ||
e42797f5 | 1771 | if (!pack_name && !from_stdin) |
9cf6d335 | 1772 | usage(index_pack_usage); |
636171cb | 1773 | if (fix_thin_pack && !from_stdin) |
c2b97ecf | 1774 | die(_("--fix-thin cannot be used without --stdin")); |
7176a314 JK |
1775 | if (from_stdin && !startup_info->have_repository) |
1776 | die(_("--stdin requires a git repository")); | |
586740aa | 1777 | if (from_stdin && hash_algo) |
1778 | die(_("--object-format cannot be used with --stdin")); | |
bfee614a | 1779 | if (!index_name && pack_name) |
8e29c7c3 | 1780 | index_name = derive_filename(pack_name, "idx", &index_name_buf); |
bfee614a | 1781 | |
e337a04d JH |
1782 | if (verify) { |
1783 | if (!index_name) | |
c2b97ecf | 1784 | die(_("--verify with no packfile name given")); |
e337a04d | 1785 | read_idx_option(&opts, index_name); |
68be2fea | 1786 | opts.flags |= WRITE_IDX_VERIFY | WRITE_IDX_STRICT; |
e337a04d | 1787 | } |
68be2fea JH |
1788 | if (strict) |
1789 | opts.flags |= WRITE_IDX_STRICT; | |
9cf6d335 | 1790 | |
2094c5e5 | 1791 | if (HAVE_THREADS && !nr_threads) { |
b8a2486f NTND |
1792 | nr_threads = online_cpus(); |
1793 | /* An experiment showed that more threads does not mean faster */ | |
1794 | if (nr_threads > 3) | |
1795 | nr_threads = 3; | |
1796 | } | |
b8a2486f | 1797 | |
e42797f5 | 1798 | curr_pack = open_pack_file(pack_name); |
9cf6d335 | 1799 | parse_pack_header(); |
50a6c8ef | 1800 | objects = xcalloc(st_add(nr_objects, 1), sizeof(struct object_entry)); |
41730576 | 1801 | if (show_stat) |
50a6c8ef | 1802 | obj_stat = xcalloc(st_add(nr_objects, 1), sizeof(struct object_stat)); |
c6458e60 | 1803 | ofs_deltas = xcalloc(nr_objects, sizeof(struct ofs_delta_entry)); |
454253f0 | 1804 | parse_pack_objects(pack_hash); |
83558686 JK |
1805 | if (report_end_of_input) |
1806 | write_in_full(2, "\0", 1); | |
5272f755 | 1807 | resolve_deltas(); |
454253f0 | 1808 | conclude_pack(fix_thin_pack, curr_pack, pack_hash); |
c6458e60 NTND |
1809 | free(ofs_deltas); |
1810 | free(ref_deltas); | |
0153be05 | 1811 | if (strict) |
c6807a40 | 1812 | foreign_nr = check_objects(); |
aa7e44bf | 1813 | |
3aba2fdd | 1814 | if (show_stat) |
38a45561 JH |
1815 | show_pack_info(stat_only); |
1816 | ||
b32fa95f | 1817 | ALLOC_ARRAY(idx_objects, nr_objects); |
aa7e44bf GB |
1818 | for (i = 0; i < nr_objects; i++) |
1819 | idx_objects[i] = &objects[i].idx; | |
454253f0 | 1820 | curr_index = write_idx_file(index_name, idx_objects, nr_objects, &opts, pack_hash); |
aa7e44bf GB |
1821 | free(idx_objects); |
1822 | ||
e337a04d JH |
1823 | if (!verify) |
1824 | final(pack_name, curr_pack, | |
1825 | index_name, curr_index, | |
88e2f9ed | 1826 | keep_msg, promisor_msg, |
454253f0 | 1827 | pack_hash); |
e337a04d JH |
1828 | else |
1829 | close(input_fd); | |
73c3f0f7 JK |
1830 | |
1831 | if (do_fsck_object && fsck_finish(&fsck_options)) | |
1832 | die(_("fsck error in pack objects")); | |
1833 | ||
9cf6d335 | 1834 | free(objects); |
592ce208 | 1835 | strbuf_release(&index_name_buf); |
c85228ed | 1836 | if (pack_name == NULL) |
3bb72562 | 1837 | free((void *) curr_pack); |
c85228ed | 1838 | if (index_name == NULL) |
3bb72562 | 1839 | free((void *) curr_index); |
9cf6d335 | 1840 | |
c6807a40 NTND |
1841 | /* |
1842 | * Let the caller know this pack is not self contained | |
1843 | */ | |
1844 | if (check_self_contained_and_connected && foreign_nr) | |
1845 | return 1; | |
1846 | ||
9cf6d335 SV |
1847 | return 0; |
1848 | } |