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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; |
bae60ba7 | 27 | static struct progress *progress; |
bad50dc8 | 28 | |
f2898cfa JH |
29 | /* |
30 | * When running under --strict mode, objects whose reachability are | |
31 | * suspect are kept in core without getting written in the object | |
32 | * store. | |
33 | */ | |
2add1e6d MK |
34 | struct obj_buffer { |
35 | char *buffer; | |
36 | unsigned long size; | |
37 | }; | |
38 | ||
39 | static struct decoration obj_decorate; | |
40 | ||
41 | static struct obj_buffer *lookup_object_buffer(struct object *base) | |
42 | { | |
43 | return lookup_decoration(&obj_decorate, base); | |
44 | } | |
45 | ||
b41860bf MK |
46 | static void add_object_buffer(struct object *object, char *buffer, unsigned long size) |
47 | { | |
48 | struct obj_buffer *obj; | |
ca56dadb | 49 | CALLOC_ARRAY(obj, 1); |
b41860bf MK |
50 | obj->buffer = buffer; |
51 | obj->size = size; | |
52 | if (add_decoration(&obj_decorate, object, obj)) | |
f2fd0760 | 53 | die("object %s tried to add buffer twice!", oid_to_hex(&object->oid)); |
b41860bf MK |
54 | } |
55 | ||
67e5a5ec LT |
56 | /* |
57 | * Make sure at least "min" bytes are available in the buffer, and | |
58 | * return the pointer to the buffer. | |
59 | */ | |
79a65697 | 60 | static void *fill(int min) |
67e5a5ec LT |
61 | { |
62 | if (min <= len) | |
63 | return buffer + offset; | |
67e5a5ec LT |
64 | if (min > sizeof(buffer)) |
65 | die("cannot fill %d bytes", min); | |
66 | if (offset) { | |
3206b6bd | 67 | the_hash_algo->update_fn(&ctx, buffer, offset); |
79a65697 | 68 | memmove(buffer, buffer + offset, len); |
67e5a5ec LT |
69 | offset = 0; |
70 | } | |
71 | do { | |
8a912bcb | 72 | ssize_t ret = xread(0, buffer + len, sizeof(buffer) - len); |
67e5a5ec LT |
73 | if (ret <= 0) { |
74 | if (!ret) | |
75 | die("early EOF"); | |
d824cbba | 76 | die_errno("read error on input"); |
67e5a5ec LT |
77 | } |
78 | len += ret; | |
79 | } while (len < min); | |
80 | return buffer; | |
81 | } | |
74536958 | 82 | |
67e5a5ec LT |
83 | static void use(int bytes) |
84 | { | |
85 | if (bytes > len) | |
86 | die("used more bytes than were available"); | |
87 | len -= bytes; | |
88 | offset += bytes; | |
d7dd0223 NP |
89 | |
90 | /* make sure off_t is sufficiently large not to wrap */ | |
c03c8315 | 91 | if (signed_add_overflows(consumed_bytes, bytes)) |
d7dd0223 | 92 | die("pack too large for current definition of off_t"); |
209c554a | 93 | consumed_bytes += bytes; |
5ad21867 CC |
94 | if (max_input_size && consumed_bytes > max_input_size) |
95 | die(_("pack exceeds maximum allowed size")); | |
bae60ba7 | 96 | display_throughput(progress, consumed_bytes); |
67e5a5ec | 97 | } |
bad50dc8 | 98 | |
67e5a5ec | 99 | static void *get_data(unsigned long size) |
bad50dc8 | 100 | { |
ef49a7a0 | 101 | git_zstream stream; |
a1e920a0 | 102 | void *buf = xmallocz(size); |
67e5a5ec | 103 | |
67e5a5ec LT |
104 | memset(&stream, 0, sizeof(stream)); |
105 | ||
106 | stream.next_out = buf; | |
107 | stream.avail_out = size; | |
108 | stream.next_in = fill(1); | |
109 | stream.avail_in = len; | |
39c68542 | 110 | git_inflate_init(&stream); |
67e5a5ec LT |
111 | |
112 | for (;;) { | |
39c68542 | 113 | int ret = git_inflate(&stream, 0); |
67e5a5ec LT |
114 | use(len - stream.avail_in); |
115 | if (stream.total_out == size && ret == Z_STREAM_END) | |
116 | break; | |
f986f2c8 | 117 | if (ret != Z_OK) { |
82247e9b | 118 | error("inflate returned %d", ret); |
6a83d902 | 119 | FREE_AND_NULL(buf); |
3b67d291 | 120 | if (!recover) |
f986f2c8 JH |
121 | exit(1); |
122 | has_errors = 1; | |
123 | break; | |
124 | } | |
67e5a5ec LT |
125 | stream.next_in = fill(1); |
126 | stream.avail_in = len; | |
127 | } | |
39c68542 | 128 | git_inflate_end(&stream); |
67e5a5ec | 129 | return buf; |
bad50dc8 LT |
130 | } |
131 | ||
67e5a5ec | 132 | struct delta_info { |
834bc47b | 133 | struct object_id base_oid; |
d7dd0223 NP |
134 | unsigned nr; |
135 | off_t base_offset; | |
67e5a5ec LT |
136 | unsigned long size; |
137 | void *delta; | |
138 | struct delta_info *next; | |
139 | }; | |
140 | ||
141 | static struct delta_info *delta_list; | |
142 | ||
834bc47b | 143 | static void add_delta_to_list(unsigned nr, const struct object_id *base_oid, |
d7dd0223 | 144 | off_t base_offset, |
209c554a | 145 | void *delta, unsigned long size) |
bad50dc8 | 146 | { |
67e5a5ec | 147 | struct delta_info *info = xmalloc(sizeof(*info)); |
bad50dc8 | 148 | |
834bc47b | 149 | oidcpy(&info->base_oid, base_oid); |
209c554a | 150 | info->base_offset = base_offset; |
67e5a5ec LT |
151 | info->size = size; |
152 | info->delta = delta; | |
209c554a | 153 | info->nr = nr; |
67e5a5ec LT |
154 | info->next = delta_list; |
155 | delta_list = info; | |
bad50dc8 LT |
156 | } |
157 | ||
209c554a | 158 | struct obj_info { |
d7dd0223 | 159 | off_t offset; |
834bc47b | 160 | struct object_id oid; |
b41860bf | 161 | struct object *obj; |
209c554a NP |
162 | }; |
163 | ||
95308d64 | 164 | /* Remember to update object flag allocation in object.h */ |
b41860bf MK |
165 | #define FLAG_OPEN (1u<<20) |
166 | #define FLAG_WRITTEN (1u<<21) | |
167 | ||
209c554a | 168 | static struct obj_info *obj_list; |
2af202be | 169 | static unsigned nr_objects; |
b41860bf | 170 | |
f2898cfa JH |
171 | /* |
172 | * Called only from check_object() after it verified this object | |
173 | * is Ok. | |
174 | */ | |
90a398bb | 175 | static void write_cached_object(struct object *obj, struct obj_buffer *obj_buf) |
b41860bf | 176 | { |
834bc47b | 177 | struct object_id oid; |
90a398bb | 178 | |
a09c985e | 179 | if (write_object_file(obj_buf->buffer, obj_buf->size, |
169c9c01 | 180 | type_name(obj->type), &oid) < 0) |
f2fd0760 | 181 | die("failed to write object %s", oid_to_hex(&obj->oid)); |
b41860bf MK |
182 | obj->flags |= FLAG_WRITTEN; |
183 | } | |
184 | ||
f2898cfa JH |
185 | /* |
186 | * At the very end of the processing, write_rest() scans the objects | |
187 | * that have reachability requirements and calls this function. | |
188 | * Verify its reachability and validity recursively and write it out. | |
189 | */ | |
a1aad716 ÆAB |
190 | static int check_object(struct object *obj, enum object_type type, |
191 | void *data, struct fsck_options *options) | |
b41860bf | 192 | { |
90a398bb JS |
193 | struct obj_buffer *obj_buf; |
194 | ||
b41860bf | 195 | if (!obj) |
9a217391 | 196 | return 1; |
b41860bf MK |
197 | |
198 | if (obj->flags & FLAG_WRITTEN) | |
9a217391 | 199 | return 0; |
b41860bf MK |
200 | |
201 | if (type != OBJ_ANY && obj->type != type) | |
202 | die("object type mismatch"); | |
203 | ||
204 | if (!(obj->flags & FLAG_OPEN)) { | |
205 | unsigned long size; | |
0df8e965 | 206 | int type = oid_object_info(the_repository, &obj->oid, &size); |
b41860bf MK |
207 | if (type != obj->type || type <= 0) |
208 | die("object of unexpected type"); | |
209 | obj->flags |= FLAG_WRITTEN; | |
9a217391 | 210 | return 0; |
b41860bf MK |
211 | } |
212 | ||
90a398bb JS |
213 | obj_buf = lookup_object_buffer(obj); |
214 | if (!obj_buf) | |
f2fd0760 | 215 | die("Whoops! Cannot find object '%s'", oid_to_hex(&obj->oid)); |
22410549 | 216 | if (fsck_object(obj, obj_buf->buffer, obj_buf->size, &fsck_options)) |
db5a58c1 | 217 | die("fsck error in packed object"); |
22410549 JS |
218 | fsck_options.walk = check_object; |
219 | if (fsck_walk(obj, NULL, &fsck_options)) | |
f2fd0760 | 220 | die("Error on reachable objects of %s", oid_to_hex(&obj->oid)); |
90a398bb | 221 | write_cached_object(obj, obj_buf); |
9a217391 | 222 | return 0; |
b41860bf MK |
223 | } |
224 | ||
225 | static void write_rest(void) | |
226 | { | |
227 | unsigned i; | |
9a217391 JH |
228 | for (i = 0; i < nr_objects; i++) { |
229 | if (obj_list[i].obj) | |
22410549 | 230 | check_object(obj_list[i].obj, OBJ_ANY, NULL, NULL); |
9a217391 | 231 | } |
b41860bf | 232 | } |
67e5a5ec | 233 | |
21666f1a NP |
234 | static void added_object(unsigned nr, enum object_type type, |
235 | void *data, unsigned long size); | |
209c554a | 236 | |
f2898cfa JH |
237 | /* |
238 | * Write out nr-th object from the list, now we know the contents | |
239 | * of it. Under --strict, this buffers structured objects in-core, | |
240 | * to be checked at the end. | |
241 | */ | |
21666f1a NP |
242 | static void write_object(unsigned nr, enum object_type type, |
243 | void *buf, unsigned long size) | |
cca7081a | 244 | { |
b41860bf | 245 | if (!strict) { |
169c9c01 | 246 | if (write_object_file(buf, size, type_name(type), |
a09c985e | 247 | &obj_list[nr].oid) < 0) |
b41860bf | 248 | die("failed to write object"); |
f2898cfa | 249 | added_object(nr, type, buf, size); |
b41860bf | 250 | free(buf); |
f2898cfa | 251 | obj_list[nr].obj = NULL; |
b41860bf MK |
252 | } else if (type == OBJ_BLOB) { |
253 | struct blob *blob; | |
169c9c01 | 254 | if (write_object_file(buf, size, type_name(type), |
a09c985e | 255 | &obj_list[nr].oid) < 0) |
b41860bf | 256 | die("failed to write object"); |
f2898cfa | 257 | added_object(nr, type, buf, size); |
b41860bf MK |
258 | free(buf); |
259 | ||
da14a7ff | 260 | blob = lookup_blob(the_repository, &obj_list[nr].oid); |
b41860bf MK |
261 | if (blob) |
262 | blob->object.flags |= FLAG_WRITTEN; | |
263 | else | |
264 | die("invalid blob object"); | |
f2898cfa | 265 | obj_list[nr].obj = NULL; |
b41860bf MK |
266 | } else { |
267 | struct object *obj; | |
268 | int eaten; | |
2dcde20e MT |
269 | hash_object_file(the_hash_algo, buf, size, type_name(type), |
270 | &obj_list[nr].oid); | |
f2898cfa | 271 | added_object(nr, type, buf, size); |
1ec5bfd2 SB |
272 | obj = parse_object_buffer(the_repository, &obj_list[nr].oid, |
273 | type, size, buf, | |
c251c83d | 274 | &eaten); |
b41860bf | 275 | if (!obj) |
debca9d2 | 276 | die("invalid %s", type_name(type)); |
b41860bf MK |
277 | add_object_buffer(obj, buf, size); |
278 | obj->flags |= FLAG_OPEN; | |
279 | obj_list[nr].obj = obj; | |
280 | } | |
cca7081a LT |
281 | } |
282 | ||
21666f1a | 283 | static void resolve_delta(unsigned nr, enum object_type type, |
f986f2c8 JH |
284 | void *base, unsigned long base_size, |
285 | void *delta, unsigned long delta_size) | |
bad50dc8 | 286 | { |
67e5a5ec LT |
287 | void *result; |
288 | unsigned long result_size; | |
bad50dc8 | 289 | |
67e5a5ec LT |
290 | result = patch_delta(base, base_size, |
291 | delta, delta_size, | |
292 | &result_size); | |
293 | if (!result) | |
294 | die("failed to apply delta"); | |
295 | free(delta); | |
21666f1a | 296 | write_object(nr, type, result, result_size); |
bad50dc8 LT |
297 | } |
298 | ||
f2898cfa JH |
299 | /* |
300 | * We now know the contents of an object (which is nr-th in the pack); | |
301 | * resolve all the deltified objects that are based on it. | |
302 | */ | |
21666f1a NP |
303 | static void added_object(unsigned nr, enum object_type type, |
304 | void *data, unsigned long size) | |
74536958 | 305 | { |
67e5a5ec LT |
306 | struct delta_info **p = &delta_list; |
307 | struct delta_info *info; | |
308 | ||
309 | while ((info = *p) != NULL) { | |
4a7e27e9 | 310 | if (oideq(&info->base_oid, &obj_list[nr].oid) || |
209c554a | 311 | info->base_offset == obj_list[nr].offset) { |
67e5a5ec LT |
312 | *p = info->next; |
313 | p = &delta_list; | |
209c554a NP |
314 | resolve_delta(info->nr, type, data, size, |
315 | info->delta, info->size); | |
67e5a5ec LT |
316 | free(info); |
317 | continue; | |
318 | } | |
319 | p = &info->next; | |
320 | } | |
321 | } | |
322 | ||
21666f1a | 323 | static void unpack_non_delta_entry(enum object_type type, unsigned long size, |
209c554a | 324 | unsigned nr) |
67e5a5ec LT |
325 | { |
326 | void *buf = get_data(size); | |
8ee378a0 | 327 | |
f986f2c8 | 328 | if (!dry_run && buf) |
21666f1a | 329 | write_object(nr, type, buf, size); |
b41860bf MK |
330 | else |
331 | free(buf); | |
8ee378a0 JH |
332 | } |
333 | ||
834bc47b | 334 | static int resolve_against_held(unsigned nr, const struct object_id *base, |
f2898cfa JH |
335 | void *delta_data, unsigned long delta_size) |
336 | { | |
337 | struct object *obj; | |
338 | struct obj_buffer *obj_buffer; | |
d0229abd | 339 | obj = lookup_object(the_repository, base); |
f2898cfa JH |
340 | if (!obj) |
341 | return 0; | |
342 | obj_buffer = lookup_object_buffer(obj); | |
343 | if (!obj_buffer) | |
344 | return 0; | |
345 | resolve_delta(nr, obj->type, obj_buffer->buffer, | |
346 | obj_buffer->size, delta_data, delta_size); | |
347 | return 1; | |
348 | } | |
349 | ||
21666f1a | 350 | static void unpack_delta_entry(enum object_type type, unsigned long delta_size, |
209c554a | 351 | unsigned nr) |
8ee378a0 | 352 | { |
67e5a5ec LT |
353 | void *delta_data, *base; |
354 | unsigned long base_size; | |
834bc47b | 355 | struct object_id base_oid; |
8ee378a0 | 356 | |
21666f1a | 357 | if (type == OBJ_REF_DELTA) { |
92e2cab9 | 358 | oidread(&base_oid, fill(the_hash_algo->rawsz)); |
3206b6bd | 359 | use(the_hash_algo->rawsz); |
209c554a NP |
360 | delta_data = get_data(delta_size); |
361 | if (dry_run || !delta_data) { | |
362 | free(delta_data); | |
363 | return; | |
364 | } | |
834bc47b | 365 | if (has_object_file(&base_oid)) |
f2898cfa | 366 | ; /* Ok we have this one */ |
834bc47b | 367 | else if (resolve_against_held(nr, &base_oid, |
f2898cfa JH |
368 | delta_data, delta_size)) |
369 | return; /* we are done */ | |
370 | else { | |
371 | /* cannot resolve yet --- queue it */ | |
834bc47b | 372 | oidclr(&obj_list[nr].oid); |
373 | add_delta_to_list(nr, &base_oid, 0, delta_data, delta_size); | |
209c554a NP |
374 | return; |
375 | } | |
376 | } else { | |
377 | unsigned base_found = 0; | |
378 | unsigned char *pack, c; | |
d7dd0223 | 379 | off_t base_offset; |
209c554a | 380 | unsigned lo, mid, hi; |
c4fb06c0 | 381 | |
209c554a NP |
382 | pack = fill(1); |
383 | c = *pack; | |
384 | use(1); | |
385 | base_offset = c & 127; | |
386 | while (c & 128) { | |
387 | base_offset += 1; | |
8723f216 | 388 | if (!base_offset || MSB(base_offset, 7)) |
209c554a NP |
389 | die("offset value overflow for delta base object"); |
390 | pack = fill(1); | |
391 | c = *pack; | |
392 | use(1); | |
393 | base_offset = (base_offset << 7) + (c & 127); | |
394 | } | |
395 | base_offset = obj_list[nr].offset - base_offset; | |
d8f32556 NP |
396 | if (base_offset <= 0 || base_offset >= obj_list[nr].offset) |
397 | die("offset value out of bound for delta base object"); | |
8ee378a0 | 398 | |
209c554a NP |
399 | delta_data = get_data(delta_size); |
400 | if (dry_run || !delta_data) { | |
401 | free(delta_data); | |
402 | return; | |
403 | } | |
404 | lo = 0; | |
405 | hi = nr; | |
406 | while (lo < hi) { | |
19716b21 | 407 | mid = lo + (hi - lo) / 2; |
209c554a NP |
408 | if (base_offset < obj_list[mid].offset) { |
409 | hi = mid; | |
410 | } else if (base_offset > obj_list[mid].offset) { | |
411 | lo = mid + 1; | |
412 | } else { | |
834bc47b | 413 | oidcpy(&base_oid, &obj_list[mid].oid); |
414 | base_found = !is_null_oid(&base_oid); | |
209c554a NP |
415 | break; |
416 | } | |
417 | } | |
418 | if (!base_found) { | |
f2898cfa JH |
419 | /* |
420 | * The delta base object is itself a delta that | |
421 | * has not been resolved yet. | |
422 | */ | |
834bc47b | 423 | oidclr(&obj_list[nr].oid); |
424 | add_delta_to_list(nr, &null_oid, base_offset, delta_data, delta_size); | |
209c554a | 425 | return; |
2add1e6d MK |
426 | } |
427 | } | |
428 | ||
834bc47b | 429 | if (resolve_against_held(nr, &base_oid, delta_data, delta_size)) |
f2898cfa | 430 | return; |
209c554a | 431 | |
b4f5aca4 | 432 | base = read_object_file(&base_oid, &type, &base_size); |
f986f2c8 JH |
433 | if (!base) { |
434 | error("failed to read delta-pack base object %s", | |
834bc47b | 435 | oid_to_hex(&base_oid)); |
3b67d291 | 436 | if (!recover) |
f986f2c8 JH |
437 | exit(1); |
438 | has_errors = 1; | |
439 | return; | |
440 | } | |
209c554a | 441 | resolve_delta(nr, type, base, base_size, delta_data, delta_size); |
ee639140 | 442 | free(base); |
8ee378a0 JH |
443 | } |
444 | ||
96a02f8f | 445 | static void unpack_one(unsigned nr) |
8ee378a0 | 446 | { |
01247d87 | 447 | unsigned shift; |
48fb7deb LT |
448 | unsigned char *pack; |
449 | unsigned long size, c; | |
67e5a5ec | 450 | enum object_type type; |
74536958 | 451 | |
209c554a NP |
452 | obj_list[nr].offset = consumed_bytes; |
453 | ||
67e5a5ec LT |
454 | pack = fill(1); |
455 | c = *pack; | |
456 | use(1); | |
a733cb60 LT |
457 | type = (c >> 4) & 7; |
458 | size = (c & 15); | |
01247d87 | 459 | shift = 4; |
a733cb60 | 460 | while (c & 0x80) { |
67e5a5ec | 461 | pack = fill(1); |
209c554a | 462 | c = *pack; |
67e5a5ec | 463 | use(1); |
01247d87 LT |
464 | size += (c & 0x7f) << shift; |
465 | shift += 7; | |
a733cb60 | 466 | } |
96a02f8f | 467 | |
a733cb60 LT |
468 | switch (type) { |
469 | case OBJ_COMMIT: | |
470 | case OBJ_TREE: | |
471 | case OBJ_BLOB: | |
472 | case OBJ_TAG: | |
209c554a | 473 | unpack_non_delta_entry(type, size, nr); |
a733cb60 | 474 | return; |
eb32d236 | 475 | case OBJ_REF_DELTA: |
209c554a NP |
476 | case OBJ_OFS_DELTA: |
477 | unpack_delta_entry(type, size, nr); | |
a733cb60 | 478 | return; |
67e5a5ec | 479 | default: |
f986f2c8 JH |
480 | error("bad object type %d", type); |
481 | has_errors = 1; | |
3b67d291 | 482 | if (recover) |
f986f2c8 JH |
483 | return; |
484 | exit(1); | |
74536958 LT |
485 | } |
486 | } | |
487 | ||
74536958 LT |
488 | static void unpack_all(void) |
489 | { | |
67e5a5ec LT |
490 | int i; |
491 | struct pack_header *hdr = fill(sizeof(struct pack_header)); | |
b41860bf MK |
492 | |
493 | nr_objects = ntohl(hdr->hdr_entries); | |
67e5a5ec LT |
494 | |
495 | if (ntohl(hdr->hdr_signature) != PACK_SIGNATURE) | |
496 | die("bad pack file"); | |
d60fc1c8 | 497 | if (!pack_version_ok(hdr->hdr_version)) |
6e1c2344 RJ |
498 | die("unknown pack file version %"PRIu32, |
499 | ntohl(hdr->hdr_version)); | |
96a02f8f | 500 | use(sizeof(struct pack_header)); |
67e5a5ec | 501 | |
13aaf148 | 502 | if (!quiet) |
754dbc43 | 503 | progress = start_progress(_("Unpacking objects"), nr_objects); |
ca56dadb | 504 | CALLOC_ARRAY(obj_list, nr_objects); |
96a02f8f NP |
505 | for (i = 0; i < nr_objects; i++) { |
506 | unpack_one(i); | |
4d4fcc54 | 507 | display_progress(progress, i + 1); |
96a02f8f | 508 | } |
4d4fcc54 | 509 | stop_progress(&progress); |
96a02f8f | 510 | |
67e5a5ec LT |
511 | if (delta_list) |
512 | die("unresolved deltas left after unpacking"); | |
74536958 LT |
513 | } |
514 | ||
64413630 | 515 | int cmd_unpack_objects(int argc, const char **argv, const char *prefix) |
bad50dc8 LT |
516 | { |
517 | int i; | |
834bc47b | 518 | struct object_id oid; |
bad50dc8 | 519 | |
6ebd1caf | 520 | read_replace_refs = 0; |
dae556bd | 521 | |
ef90d6d4 | 522 | git_config(git_default_config, NULL); |
53228a5f | 523 | |
476e8011 JH |
524 | quiet = !isatty(2); |
525 | ||
bad50dc8 LT |
526 | for (i = 1 ; i < argc; i++) { |
527 | const char *arg = argv[i]; | |
528 | ||
529 | if (*arg == '-') { | |
74536958 LT |
530 | if (!strcmp(arg, "-n")) { |
531 | dry_run = 1; | |
532 | continue; | |
533 | } | |
d36f7b80 LT |
534 | if (!strcmp(arg, "-q")) { |
535 | quiet = 1; | |
536 | continue; | |
537 | } | |
f986f2c8 | 538 | if (!strcmp(arg, "-r")) { |
3b67d291 | 539 | recover = 1; |
f986f2c8 JH |
540 | continue; |
541 | } | |
b41860bf MK |
542 | if (!strcmp(arg, "--strict")) { |
543 | strict = 1; | |
544 | continue; | |
545 | } | |
5d477a33 JS |
546 | if (skip_prefix(arg, "--strict=", &arg)) { |
547 | strict = 1; | |
548 | fsck_set_msg_types(&fsck_options, arg); | |
549 | continue; | |
550 | } | |
59556548 | 551 | if (starts_with(arg, "--pack_header=")) { |
bed006fb NP |
552 | struct pack_header *hdr; |
553 | char *c; | |
554 | ||
555 | hdr = (struct pack_header *)buffer; | |
556 | hdr->hdr_signature = htonl(PACK_SIGNATURE); | |
557 | hdr->hdr_version = htonl(strtoul(arg + 14, &c, 10)); | |
558 | if (*c != ',') | |
559 | die("bad %s", arg); | |
560 | hdr->hdr_entries = htonl(strtoul(c + 1, &c, 10)); | |
561 | if (*c) | |
562 | die("bad %s", arg); | |
563 | len = sizeof(*hdr); | |
564 | continue; | |
565 | } | |
5ad21867 CC |
566 | if (skip_prefix(arg, "--max-input-size=", &arg)) { |
567 | max_input_size = strtoumax(arg, NULL, 10); | |
568 | continue; | |
569 | } | |
bad50dc8 LT |
570 | usage(unpack_usage); |
571 | } | |
67e5a5ec LT |
572 | |
573 | /* We don't take any non-flag arguments now.. Maybe some day */ | |
bad50dc8 | 574 | usage(unpack_usage); |
67e5a5ec | 575 | } |
3206b6bd | 576 | the_hash_algo->init_fn(&ctx); |
74536958 | 577 | unpack_all(); |
3206b6bd | 578 | the_hash_algo->update_fn(&ctx, buffer, offset); |
5951bf46 | 579 | the_hash_algo->final_oid_fn(&oid, &ctx); |
6e328d6c | 580 | if (strict) { |
b41860bf | 581 | write_rest(); |
6e328d6c JK |
582 | if (fsck_finish(&fsck_options)) |
583 | die(_("fsck error in pack objects")); | |
584 | } | |
67947c34 | 585 | if (!hasheq(fill(the_hash_algo->rawsz), oid.hash)) |
67e5a5ec | 586 | die("final sha1 did not match"); |
3206b6bd | 587 | use(the_hash_algo->rawsz); |
67e5a5ec LT |
588 | |
589 | /* Write the last part of the buffer to stdout */ | |
590 | while (len) { | |
1c15afb9 JH |
591 | int ret = xwrite(1, buffer + offset, len); |
592 | if (ret <= 0) | |
67e5a5ec | 593 | break; |
67e5a5ec LT |
594 | len -= ret; |
595 | offset += ret; | |
596 | } | |
597 | ||
598 | /* All done */ | |
f986f2c8 | 599 | return has_errors; |
bad50dc8 | 600 | } |