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Commit | Line | Data |
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64413630 | 1 | #include "builtin.h" |
bad50dc8 | 2 | #include "cache.h" |
b2141fc1 | 3 | #include "config.h" |
cbd53a21 | 4 | #include "object-store.h" |
74536958 | 5 | #include "object.h" |
8ee378a0 | 6 | #include "delta.h" |
a733cb60 | 7 | #include "pack.h" |
8e440259 PE |
8 | #include "blob.h" |
9 | #include "commit.h" | |
10 | #include "tag.h" | |
11 | #include "tree.h" | |
b41860bf | 12 | #include "tree-walk.h" |
96a02f8f | 13 | #include "progress.h" |
2add1e6d | 14 | #include "decorate.h" |
b41860bf | 15 | #include "fsck.h" |
bad50dc8 | 16 | |
b41860bf | 17 | static int dry_run, quiet, recover, has_errors, strict; |
33e8fc87 | 18 | static const char unpack_usage[] = "git unpack-objects [-n] [-q] [-r] [--strict]"; |
bad50dc8 | 19 | |
67e5a5ec LT |
20 | /* We always read in 4kB chunks. */ |
21 | static unsigned char buffer[4096]; | |
d7dd0223 NP |
22 | static unsigned int offset, len; |
23 | static off_t consumed_bytes; | |
5ad21867 | 24 | static off_t max_input_size; |
3206b6bd | 25 | static git_hash_ctx ctx; |
22410549 | 26 | static struct fsck_options fsck_options = FSCK_OPTIONS_STRICT; |
bad50dc8 | 27 | |
f2898cfa JH |
28 | /* |
29 | * When running under --strict mode, objects whose reachability are | |
30 | * suspect are kept in core without getting written in the object | |
31 | * store. | |
32 | */ | |
2add1e6d MK |
33 | struct obj_buffer { |
34 | char *buffer; | |
35 | unsigned long size; | |
36 | }; | |
37 | ||
38 | static struct decoration obj_decorate; | |
39 | ||
40 | static struct obj_buffer *lookup_object_buffer(struct object *base) | |
41 | { | |
42 | return lookup_decoration(&obj_decorate, base); | |
43 | } | |
44 | ||
b41860bf MK |
45 | static void add_object_buffer(struct object *object, char *buffer, unsigned long size) |
46 | { | |
47 | struct obj_buffer *obj; | |
48 | obj = xcalloc(1, sizeof(struct obj_buffer)); | |
49 | obj->buffer = buffer; | |
50 | obj->size = size; | |
51 | if (add_decoration(&obj_decorate, object, obj)) | |
f2fd0760 | 52 | die("object %s tried to add buffer twice!", oid_to_hex(&object->oid)); |
b41860bf MK |
53 | } |
54 | ||
67e5a5ec LT |
55 | /* |
56 | * Make sure at least "min" bytes are available in the buffer, and | |
57 | * return the pointer to the buffer. | |
58 | */ | |
79a65697 | 59 | static void *fill(int min) |
67e5a5ec LT |
60 | { |
61 | if (min <= len) | |
62 | return buffer + offset; | |
67e5a5ec LT |
63 | if (min > sizeof(buffer)) |
64 | die("cannot fill %d bytes", min); | |
65 | if (offset) { | |
3206b6bd | 66 | the_hash_algo->update_fn(&ctx, buffer, offset); |
79a65697 | 67 | memmove(buffer, buffer + offset, len); |
67e5a5ec LT |
68 | offset = 0; |
69 | } | |
70 | do { | |
8a912bcb | 71 | ssize_t ret = xread(0, buffer + len, sizeof(buffer) - len); |
67e5a5ec LT |
72 | if (ret <= 0) { |
73 | if (!ret) | |
74 | die("early EOF"); | |
d824cbba | 75 | die_errno("read error on input"); |
67e5a5ec LT |
76 | } |
77 | len += ret; | |
78 | } while (len < min); | |
79 | return buffer; | |
80 | } | |
74536958 | 81 | |
67e5a5ec LT |
82 | static void use(int bytes) |
83 | { | |
84 | if (bytes > len) | |
85 | die("used more bytes than were available"); | |
86 | len -= bytes; | |
87 | offset += bytes; | |
d7dd0223 NP |
88 | |
89 | /* make sure off_t is sufficiently large not to wrap */ | |
c03c8315 | 90 | if (signed_add_overflows(consumed_bytes, bytes)) |
d7dd0223 | 91 | die("pack too large for current definition of off_t"); |
209c554a | 92 | consumed_bytes += bytes; |
5ad21867 CC |
93 | if (max_input_size && consumed_bytes > max_input_size) |
94 | die(_("pack exceeds maximum allowed size")); | |
67e5a5ec | 95 | } |
bad50dc8 | 96 | |
67e5a5ec | 97 | static void *get_data(unsigned long size) |
bad50dc8 | 98 | { |
ef49a7a0 | 99 | git_zstream stream; |
a1e920a0 | 100 | void *buf = xmallocz(size); |
67e5a5ec | 101 | |
67e5a5ec LT |
102 | memset(&stream, 0, sizeof(stream)); |
103 | ||
104 | stream.next_out = buf; | |
105 | stream.avail_out = size; | |
106 | stream.next_in = fill(1); | |
107 | stream.avail_in = len; | |
39c68542 | 108 | git_inflate_init(&stream); |
67e5a5ec LT |
109 | |
110 | for (;;) { | |
39c68542 | 111 | int ret = git_inflate(&stream, 0); |
67e5a5ec LT |
112 | use(len - stream.avail_in); |
113 | if (stream.total_out == size && ret == Z_STREAM_END) | |
114 | break; | |
f986f2c8 | 115 | if (ret != Z_OK) { |
82247e9b | 116 | error("inflate returned %d", ret); |
6a83d902 | 117 | FREE_AND_NULL(buf); |
3b67d291 | 118 | if (!recover) |
f986f2c8 JH |
119 | exit(1); |
120 | has_errors = 1; | |
121 | break; | |
122 | } | |
67e5a5ec LT |
123 | stream.next_in = fill(1); |
124 | stream.avail_in = len; | |
125 | } | |
39c68542 | 126 | git_inflate_end(&stream); |
67e5a5ec | 127 | return buf; |
bad50dc8 LT |
128 | } |
129 | ||
67e5a5ec | 130 | struct delta_info { |
834bc47b | 131 | struct object_id base_oid; |
d7dd0223 NP |
132 | unsigned nr; |
133 | off_t base_offset; | |
67e5a5ec LT |
134 | unsigned long size; |
135 | void *delta; | |
136 | struct delta_info *next; | |
137 | }; | |
138 | ||
139 | static struct delta_info *delta_list; | |
140 | ||
834bc47b | 141 | static void add_delta_to_list(unsigned nr, const struct object_id *base_oid, |
d7dd0223 | 142 | off_t base_offset, |
209c554a | 143 | void *delta, unsigned long size) |
bad50dc8 | 144 | { |
67e5a5ec | 145 | struct delta_info *info = xmalloc(sizeof(*info)); |
bad50dc8 | 146 | |
834bc47b | 147 | oidcpy(&info->base_oid, base_oid); |
209c554a | 148 | info->base_offset = base_offset; |
67e5a5ec LT |
149 | info->size = size; |
150 | info->delta = delta; | |
209c554a | 151 | info->nr = nr; |
67e5a5ec LT |
152 | info->next = delta_list; |
153 | delta_list = info; | |
bad50dc8 LT |
154 | } |
155 | ||
209c554a | 156 | struct obj_info { |
d7dd0223 | 157 | off_t offset; |
834bc47b | 158 | struct object_id oid; |
b41860bf | 159 | struct object *obj; |
209c554a NP |
160 | }; |
161 | ||
95308d64 | 162 | /* Remember to update object flag allocation in object.h */ |
b41860bf MK |
163 | #define FLAG_OPEN (1u<<20) |
164 | #define FLAG_WRITTEN (1u<<21) | |
165 | ||
209c554a | 166 | static struct obj_info *obj_list; |
2af202be | 167 | static unsigned nr_objects; |
b41860bf | 168 | |
f2898cfa JH |
169 | /* |
170 | * Called only from check_object() after it verified this object | |
171 | * is Ok. | |
172 | */ | |
90a398bb | 173 | static void write_cached_object(struct object *obj, struct obj_buffer *obj_buf) |
b41860bf | 174 | { |
834bc47b | 175 | struct object_id oid; |
90a398bb | 176 | |
a09c985e | 177 | if (write_object_file(obj_buf->buffer, obj_buf->size, |
169c9c01 | 178 | type_name(obj->type), &oid) < 0) |
f2fd0760 | 179 | die("failed to write object %s", oid_to_hex(&obj->oid)); |
b41860bf MK |
180 | obj->flags |= FLAG_WRITTEN; |
181 | } | |
182 | ||
f2898cfa JH |
183 | /* |
184 | * At the very end of the processing, write_rest() scans the objects | |
185 | * that have reachability requirements and calls this function. | |
186 | * Verify its reachability and validity recursively and write it out. | |
187 | */ | |
22410549 | 188 | static int check_object(struct object *obj, int type, void *data, struct fsck_options *options) |
b41860bf | 189 | { |
90a398bb JS |
190 | struct obj_buffer *obj_buf; |
191 | ||
b41860bf | 192 | if (!obj) |
9a217391 | 193 | return 1; |
b41860bf MK |
194 | |
195 | if (obj->flags & FLAG_WRITTEN) | |
9a217391 | 196 | return 0; |
b41860bf MK |
197 | |
198 | if (type != OBJ_ANY && obj->type != type) | |
199 | die("object type mismatch"); | |
200 | ||
201 | if (!(obj->flags & FLAG_OPEN)) { | |
202 | unsigned long size; | |
0df8e965 | 203 | int type = oid_object_info(the_repository, &obj->oid, &size); |
b41860bf MK |
204 | if (type != obj->type || type <= 0) |
205 | die("object of unexpected type"); | |
206 | obj->flags |= FLAG_WRITTEN; | |
9a217391 | 207 | return 0; |
b41860bf MK |
208 | } |
209 | ||
90a398bb JS |
210 | obj_buf = lookup_object_buffer(obj); |
211 | if (!obj_buf) | |
f2fd0760 | 212 | die("Whoops! Cannot find object '%s'", oid_to_hex(&obj->oid)); |
22410549 | 213 | if (fsck_object(obj, obj_buf->buffer, obj_buf->size, &fsck_options)) |
db5a58c1 | 214 | die("fsck error in packed object"); |
22410549 JS |
215 | fsck_options.walk = check_object; |
216 | if (fsck_walk(obj, NULL, &fsck_options)) | |
f2fd0760 | 217 | die("Error on reachable objects of %s", oid_to_hex(&obj->oid)); |
90a398bb | 218 | write_cached_object(obj, obj_buf); |
9a217391 | 219 | return 0; |
b41860bf MK |
220 | } |
221 | ||
222 | static void write_rest(void) | |
223 | { | |
224 | unsigned i; | |
9a217391 JH |
225 | for (i = 0; i < nr_objects; i++) { |
226 | if (obj_list[i].obj) | |
22410549 | 227 | check_object(obj_list[i].obj, OBJ_ANY, NULL, NULL); |
9a217391 | 228 | } |
b41860bf | 229 | } |
67e5a5ec | 230 | |
21666f1a NP |
231 | static void added_object(unsigned nr, enum object_type type, |
232 | void *data, unsigned long size); | |
209c554a | 233 | |
f2898cfa JH |
234 | /* |
235 | * Write out nr-th object from the list, now we know the contents | |
236 | * of it. Under --strict, this buffers structured objects in-core, | |
237 | * to be checked at the end. | |
238 | */ | |
21666f1a NP |
239 | static void write_object(unsigned nr, enum object_type type, |
240 | void *buf, unsigned long size) | |
cca7081a | 241 | { |
b41860bf | 242 | if (!strict) { |
169c9c01 | 243 | if (write_object_file(buf, size, type_name(type), |
a09c985e | 244 | &obj_list[nr].oid) < 0) |
b41860bf | 245 | die("failed to write object"); |
f2898cfa | 246 | added_object(nr, type, buf, size); |
b41860bf | 247 | free(buf); |
f2898cfa | 248 | obj_list[nr].obj = NULL; |
b41860bf MK |
249 | } else if (type == OBJ_BLOB) { |
250 | struct blob *blob; | |
169c9c01 | 251 | if (write_object_file(buf, size, type_name(type), |
a09c985e | 252 | &obj_list[nr].oid) < 0) |
b41860bf | 253 | die("failed to write object"); |
f2898cfa | 254 | added_object(nr, type, buf, size); |
b41860bf MK |
255 | free(buf); |
256 | ||
da14a7ff | 257 | blob = lookup_blob(the_repository, &obj_list[nr].oid); |
b41860bf MK |
258 | if (blob) |
259 | blob->object.flags |= FLAG_WRITTEN; | |
260 | else | |
261 | die("invalid blob object"); | |
f2898cfa | 262 | obj_list[nr].obj = NULL; |
b41860bf MK |
263 | } else { |
264 | struct object *obj; | |
265 | int eaten; | |
169c9c01 | 266 | hash_object_file(buf, size, type_name(type), &obj_list[nr].oid); |
f2898cfa | 267 | added_object(nr, type, buf, size); |
1ec5bfd2 SB |
268 | obj = parse_object_buffer(the_repository, &obj_list[nr].oid, |
269 | type, size, buf, | |
c251c83d | 270 | &eaten); |
b41860bf | 271 | if (!obj) |
debca9d2 | 272 | die("invalid %s", type_name(type)); |
b41860bf MK |
273 | add_object_buffer(obj, buf, size); |
274 | obj->flags |= FLAG_OPEN; | |
275 | obj_list[nr].obj = obj; | |
276 | } | |
cca7081a LT |
277 | } |
278 | ||
21666f1a | 279 | static void resolve_delta(unsigned nr, enum object_type type, |
f986f2c8 JH |
280 | void *base, unsigned long base_size, |
281 | void *delta, unsigned long delta_size) | |
bad50dc8 | 282 | { |
67e5a5ec LT |
283 | void *result; |
284 | unsigned long result_size; | |
bad50dc8 | 285 | |
67e5a5ec LT |
286 | result = patch_delta(base, base_size, |
287 | delta, delta_size, | |
288 | &result_size); | |
289 | if (!result) | |
290 | die("failed to apply delta"); | |
291 | free(delta); | |
21666f1a | 292 | write_object(nr, type, result, result_size); |
bad50dc8 LT |
293 | } |
294 | ||
f2898cfa JH |
295 | /* |
296 | * We now know the contents of an object (which is nr-th in the pack); | |
297 | * resolve all the deltified objects that are based on it. | |
298 | */ | |
21666f1a NP |
299 | static void added_object(unsigned nr, enum object_type type, |
300 | void *data, unsigned long size) | |
74536958 | 301 | { |
67e5a5ec LT |
302 | struct delta_info **p = &delta_list; |
303 | struct delta_info *info; | |
304 | ||
305 | while ((info = *p) != NULL) { | |
4a7e27e9 | 306 | if (oideq(&info->base_oid, &obj_list[nr].oid) || |
209c554a | 307 | info->base_offset == obj_list[nr].offset) { |
67e5a5ec LT |
308 | *p = info->next; |
309 | p = &delta_list; | |
209c554a NP |
310 | resolve_delta(info->nr, type, data, size, |
311 | info->delta, info->size); | |
67e5a5ec LT |
312 | free(info); |
313 | continue; | |
314 | } | |
315 | p = &info->next; | |
316 | } | |
317 | } | |
318 | ||
21666f1a | 319 | static void unpack_non_delta_entry(enum object_type type, unsigned long size, |
209c554a | 320 | unsigned nr) |
67e5a5ec LT |
321 | { |
322 | void *buf = get_data(size); | |
8ee378a0 | 323 | |
f986f2c8 | 324 | if (!dry_run && buf) |
21666f1a | 325 | write_object(nr, type, buf, size); |
b41860bf MK |
326 | else |
327 | free(buf); | |
8ee378a0 JH |
328 | } |
329 | ||
834bc47b | 330 | static int resolve_against_held(unsigned nr, const struct object_id *base, |
f2898cfa JH |
331 | void *delta_data, unsigned long delta_size) |
332 | { | |
333 | struct object *obj; | |
334 | struct obj_buffer *obj_buffer; | |
d0229abd | 335 | obj = lookup_object(the_repository, base); |
f2898cfa JH |
336 | if (!obj) |
337 | return 0; | |
338 | obj_buffer = lookup_object_buffer(obj); | |
339 | if (!obj_buffer) | |
340 | return 0; | |
341 | resolve_delta(nr, obj->type, obj_buffer->buffer, | |
342 | obj_buffer->size, delta_data, delta_size); | |
343 | return 1; | |
344 | } | |
345 | ||
21666f1a | 346 | static void unpack_delta_entry(enum object_type type, unsigned long delta_size, |
209c554a | 347 | unsigned nr) |
8ee378a0 | 348 | { |
67e5a5ec LT |
349 | void *delta_data, *base; |
350 | unsigned long base_size; | |
834bc47b | 351 | struct object_id base_oid; |
8ee378a0 | 352 | |
21666f1a | 353 | if (type == OBJ_REF_DELTA) { |
3206b6bd | 354 | hashcpy(base_oid.hash, fill(the_hash_algo->rawsz)); |
355 | use(the_hash_algo->rawsz); | |
209c554a NP |
356 | delta_data = get_data(delta_size); |
357 | if (dry_run || !delta_data) { | |
358 | free(delta_data); | |
359 | return; | |
360 | } | |
834bc47b | 361 | if (has_object_file(&base_oid)) |
f2898cfa | 362 | ; /* Ok we have this one */ |
834bc47b | 363 | else if (resolve_against_held(nr, &base_oid, |
f2898cfa JH |
364 | delta_data, delta_size)) |
365 | return; /* we are done */ | |
366 | else { | |
367 | /* cannot resolve yet --- queue it */ | |
834bc47b | 368 | oidclr(&obj_list[nr].oid); |
369 | add_delta_to_list(nr, &base_oid, 0, delta_data, delta_size); | |
209c554a NP |
370 | return; |
371 | } | |
372 | } else { | |
373 | unsigned base_found = 0; | |
374 | unsigned char *pack, c; | |
d7dd0223 | 375 | off_t base_offset; |
209c554a | 376 | unsigned lo, mid, hi; |
c4fb06c0 | 377 | |
209c554a NP |
378 | pack = fill(1); |
379 | c = *pack; | |
380 | use(1); | |
381 | base_offset = c & 127; | |
382 | while (c & 128) { | |
383 | base_offset += 1; | |
8723f216 | 384 | if (!base_offset || MSB(base_offset, 7)) |
209c554a NP |
385 | die("offset value overflow for delta base object"); |
386 | pack = fill(1); | |
387 | c = *pack; | |
388 | use(1); | |
389 | base_offset = (base_offset << 7) + (c & 127); | |
390 | } | |
391 | base_offset = obj_list[nr].offset - base_offset; | |
d8f32556 NP |
392 | if (base_offset <= 0 || base_offset >= obj_list[nr].offset) |
393 | die("offset value out of bound for delta base object"); | |
8ee378a0 | 394 | |
209c554a NP |
395 | delta_data = get_data(delta_size); |
396 | if (dry_run || !delta_data) { | |
397 | free(delta_data); | |
398 | return; | |
399 | } | |
400 | lo = 0; | |
401 | hi = nr; | |
402 | while (lo < hi) { | |
19716b21 | 403 | mid = lo + (hi - lo) / 2; |
209c554a NP |
404 | if (base_offset < obj_list[mid].offset) { |
405 | hi = mid; | |
406 | } else if (base_offset > obj_list[mid].offset) { | |
407 | lo = mid + 1; | |
408 | } else { | |
834bc47b | 409 | oidcpy(&base_oid, &obj_list[mid].oid); |
410 | base_found = !is_null_oid(&base_oid); | |
209c554a NP |
411 | break; |
412 | } | |
413 | } | |
414 | if (!base_found) { | |
f2898cfa JH |
415 | /* |
416 | * The delta base object is itself a delta that | |
417 | * has not been resolved yet. | |
418 | */ | |
834bc47b | 419 | oidclr(&obj_list[nr].oid); |
420 | add_delta_to_list(nr, &null_oid, base_offset, delta_data, delta_size); | |
209c554a | 421 | return; |
2add1e6d MK |
422 | } |
423 | } | |
424 | ||
834bc47b | 425 | if (resolve_against_held(nr, &base_oid, delta_data, delta_size)) |
f2898cfa | 426 | return; |
209c554a | 427 | |
b4f5aca4 | 428 | base = read_object_file(&base_oid, &type, &base_size); |
f986f2c8 JH |
429 | if (!base) { |
430 | error("failed to read delta-pack base object %s", | |
834bc47b | 431 | oid_to_hex(&base_oid)); |
3b67d291 | 432 | if (!recover) |
f986f2c8 JH |
433 | exit(1); |
434 | has_errors = 1; | |
435 | return; | |
436 | } | |
209c554a | 437 | resolve_delta(nr, type, base, base_size, delta_data, delta_size); |
ee639140 | 438 | free(base); |
8ee378a0 JH |
439 | } |
440 | ||
96a02f8f | 441 | static void unpack_one(unsigned nr) |
8ee378a0 | 442 | { |
01247d87 | 443 | unsigned shift; |
48fb7deb LT |
444 | unsigned char *pack; |
445 | unsigned long size, c; | |
67e5a5ec | 446 | enum object_type type; |
74536958 | 447 | |
209c554a NP |
448 | obj_list[nr].offset = consumed_bytes; |
449 | ||
67e5a5ec LT |
450 | pack = fill(1); |
451 | c = *pack; | |
452 | use(1); | |
a733cb60 LT |
453 | type = (c >> 4) & 7; |
454 | size = (c & 15); | |
01247d87 | 455 | shift = 4; |
a733cb60 | 456 | while (c & 0x80) { |
67e5a5ec | 457 | pack = fill(1); |
209c554a | 458 | c = *pack; |
67e5a5ec | 459 | use(1); |
01247d87 LT |
460 | size += (c & 0x7f) << shift; |
461 | shift += 7; | |
a733cb60 | 462 | } |
96a02f8f | 463 | |
a733cb60 LT |
464 | switch (type) { |
465 | case OBJ_COMMIT: | |
466 | case OBJ_TREE: | |
467 | case OBJ_BLOB: | |
468 | case OBJ_TAG: | |
209c554a | 469 | unpack_non_delta_entry(type, size, nr); |
a733cb60 | 470 | return; |
eb32d236 | 471 | case OBJ_REF_DELTA: |
209c554a NP |
472 | case OBJ_OFS_DELTA: |
473 | unpack_delta_entry(type, size, nr); | |
a733cb60 | 474 | return; |
67e5a5ec | 475 | default: |
f986f2c8 JH |
476 | error("bad object type %d", type); |
477 | has_errors = 1; | |
3b67d291 | 478 | if (recover) |
f986f2c8 JH |
479 | return; |
480 | exit(1); | |
74536958 LT |
481 | } |
482 | } | |
483 | ||
74536958 LT |
484 | static void unpack_all(void) |
485 | { | |
67e5a5ec | 486 | int i; |
dc6a0757 | 487 | struct progress *progress = NULL; |
67e5a5ec | 488 | struct pack_header *hdr = fill(sizeof(struct pack_header)); |
b41860bf MK |
489 | |
490 | nr_objects = ntohl(hdr->hdr_entries); | |
67e5a5ec LT |
491 | |
492 | if (ntohl(hdr->hdr_signature) != PACK_SIGNATURE) | |
493 | die("bad pack file"); | |
d60fc1c8 | 494 | if (!pack_version_ok(hdr->hdr_version)) |
6e1c2344 RJ |
495 | die("unknown pack file version %"PRIu32, |
496 | ntohl(hdr->hdr_version)); | |
96a02f8f | 497 | use(sizeof(struct pack_header)); |
67e5a5ec | 498 | |
13aaf148 | 499 | if (!quiet) |
754dbc43 | 500 | progress = start_progress(_("Unpacking objects"), nr_objects); |
19d4b416 | 501 | obj_list = xcalloc(nr_objects, sizeof(*obj_list)); |
96a02f8f NP |
502 | for (i = 0; i < nr_objects; i++) { |
503 | unpack_one(i); | |
4d4fcc54 | 504 | display_progress(progress, i + 1); |
96a02f8f | 505 | } |
4d4fcc54 | 506 | stop_progress(&progress); |
96a02f8f | 507 | |
67e5a5ec LT |
508 | if (delta_list) |
509 | die("unresolved deltas left after unpacking"); | |
74536958 LT |
510 | } |
511 | ||
64413630 | 512 | int cmd_unpack_objects(int argc, const char **argv, const char *prefix) |
bad50dc8 LT |
513 | { |
514 | int i; | |
834bc47b | 515 | struct object_id oid; |
bad50dc8 | 516 | |
6ebd1caf | 517 | read_replace_refs = 0; |
dae556bd | 518 | |
ef90d6d4 | 519 | git_config(git_default_config, NULL); |
53228a5f | 520 | |
476e8011 JH |
521 | quiet = !isatty(2); |
522 | ||
bad50dc8 LT |
523 | for (i = 1 ; i < argc; i++) { |
524 | const char *arg = argv[i]; | |
525 | ||
526 | if (*arg == '-') { | |
74536958 LT |
527 | if (!strcmp(arg, "-n")) { |
528 | dry_run = 1; | |
529 | continue; | |
530 | } | |
d36f7b80 LT |
531 | if (!strcmp(arg, "-q")) { |
532 | quiet = 1; | |
533 | continue; | |
534 | } | |
f986f2c8 | 535 | if (!strcmp(arg, "-r")) { |
3b67d291 | 536 | recover = 1; |
f986f2c8 JH |
537 | continue; |
538 | } | |
b41860bf MK |
539 | if (!strcmp(arg, "--strict")) { |
540 | strict = 1; | |
541 | continue; | |
542 | } | |
5d477a33 JS |
543 | if (skip_prefix(arg, "--strict=", &arg)) { |
544 | strict = 1; | |
545 | fsck_set_msg_types(&fsck_options, arg); | |
546 | continue; | |
547 | } | |
59556548 | 548 | if (starts_with(arg, "--pack_header=")) { |
bed006fb NP |
549 | struct pack_header *hdr; |
550 | char *c; | |
551 | ||
552 | hdr = (struct pack_header *)buffer; | |
553 | hdr->hdr_signature = htonl(PACK_SIGNATURE); | |
554 | hdr->hdr_version = htonl(strtoul(arg + 14, &c, 10)); | |
555 | if (*c != ',') | |
556 | die("bad %s", arg); | |
557 | hdr->hdr_entries = htonl(strtoul(c + 1, &c, 10)); | |
558 | if (*c) | |
559 | die("bad %s", arg); | |
560 | len = sizeof(*hdr); | |
561 | continue; | |
562 | } | |
5ad21867 CC |
563 | if (skip_prefix(arg, "--max-input-size=", &arg)) { |
564 | max_input_size = strtoumax(arg, NULL, 10); | |
565 | continue; | |
566 | } | |
bad50dc8 LT |
567 | usage(unpack_usage); |
568 | } | |
67e5a5ec LT |
569 | |
570 | /* We don't take any non-flag arguments now.. Maybe some day */ | |
bad50dc8 | 571 | usage(unpack_usage); |
67e5a5ec | 572 | } |
3206b6bd | 573 | the_hash_algo->init_fn(&ctx); |
74536958 | 574 | unpack_all(); |
3206b6bd | 575 | the_hash_algo->update_fn(&ctx, buffer, offset); |
576 | the_hash_algo->final_fn(oid.hash, &ctx); | |
6e328d6c | 577 | if (strict) { |
b41860bf | 578 | write_rest(); |
6e328d6c JK |
579 | if (fsck_finish(&fsck_options)) |
580 | die(_("fsck error in pack objects")); | |
581 | } | |
67947c34 | 582 | if (!hasheq(fill(the_hash_algo->rawsz), oid.hash)) |
67e5a5ec | 583 | die("final sha1 did not match"); |
3206b6bd | 584 | use(the_hash_algo->rawsz); |
67e5a5ec LT |
585 | |
586 | /* Write the last part of the buffer to stdout */ | |
587 | while (len) { | |
1c15afb9 JH |
588 | int ret = xwrite(1, buffer + offset, len); |
589 | if (ret <= 0) | |
67e5a5ec | 590 | break; |
67e5a5ec LT |
591 | len -= ret; |
592 | offset += ret; | |
593 | } | |
594 | ||
595 | /* All done */ | |
f986f2c8 | 596 | return has_errors; |
bad50dc8 | 597 | } |