convert trivial cases to ALLOC_ARRAY
[git/git.git] / builtin / index-pack.c
CommitLineData
2ad9d4cb 1#include "builtin.h"
9cf6d335
SV
2#include "delta.h"
3#include "pack.h"
4#include "csum-file.h"
8e440259
PE
5#include "blob.h"
6#include "commit.h"
7#include "tag.h"
8#include "tree.h"
96a02f8f 9#include "progress.h"
0153be05 10#include "fsck.h"
2fb3f6db 11#include "exec_cmd.h"
4614043c 12#include "streaming.h"
b8a2486f 13#include "thread-utils.h"
9cf6d335
SV
14
15static const char index_pack_usage[] =
e337a04d 16"git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
9cf6d335 17
9cba13ca 18struct object_entry {
aa7e44bf 19 struct pack_idx_entry idx;
2d477051 20 unsigned long size;
41730576
NTND
21 unsigned char hdr_size;
22 signed char type;
23 signed char real_type;
9cf6d335
SV
24};
25
41730576 26struct object_stat {
38a45561
JH
27 unsigned delta_depth;
28 int base_object_no;
53dda6ff
NP
29};
30
f41aebd4 31struct base_data {
4a438cab
SP
32 struct base_data *base;
33 struct base_data *child;
03993e13 34 struct object_entry *obj;
f41aebd4
SP
35 void *data;
36 unsigned long size;
2baad220
NTND
37 int ref_first, ref_last;
38 int ofs_first, ofs_last;
f41aebd4
SP
39};
40
b8a2486f
NTND
41struct thread_local {
42#ifndef NO_PTHREADS
43 pthread_t thread;
44#endif
45 struct base_data *base_cache;
46 size_t base_cache_used;
39539495 47 int pack_fd;
b8a2486f
NTND
48};
49
0153be05
MK
50#define FLAG_LINK (1u<<20)
51#define FLAG_CHECKED (1u<<21)
52
c6458e60
NTND
53struct ofs_delta_entry {
54 off_t offset;
55 int obj_no;
56};
57
58struct ref_delta_entry {
59 unsigned char sha1[20];
636171cb 60 int obj_no;
9cf6d335
SV
61};
62
9cf6d335 63static struct object_entry *objects;
41730576 64static struct object_stat *obj_stat;
c6458e60
NTND
65static struct ofs_delta_entry *ofs_deltas;
66static struct ref_delta_entry *ref_deltas;
b8a2486f 67static struct thread_local nothread_data;
9cf6d335 68static int nr_objects;
c6458e60
NTND
69static int nr_ofs_deltas;
70static int nr_ref_deltas;
71static int ref_deltas_alloc;
636171cb 72static int nr_resolved_deltas;
b8a2486f 73static int nr_threads;
9cf6d335 74
e42797f5 75static int from_stdin;
0153be05 76static int strict;
c6807a40 77static int do_fsck_object;
22410549 78static struct fsck_options fsck_options = FSCK_OPTIONS_STRICT;
3c9af366 79static int verbose;
3aba2fdd 80static int show_stat;
c6807a40 81static int check_self_contained_and_connected;
3c9af366 82
dc6a0757 83static struct progress *progress;
e42797f5 84
2d477051
NP
85/* We always read in 4kB chunks. */
86static unsigned char input_buffer[4096];
d7dd0223
NP
87static unsigned int input_offset, input_len;
88static off_t consumed_bytes;
d1a0ed18 89static unsigned deepest_delta;
9126f009 90static git_SHA_CTX input_ctx;
ee5743ce 91static uint32_t input_crc32;
39539495
NTND
92static int input_fd, output_fd;
93static const char *curr_pack;
2d477051 94
b8a2486f
NTND
95#ifndef NO_PTHREADS
96
97static struct thread_local *thread_data;
98static int nr_dispatched;
99static int threads_active;
100
101static pthread_mutex_t read_mutex;
102#define read_lock() lock_mutex(&read_mutex)
103#define read_unlock() unlock_mutex(&read_mutex)
104
105static pthread_mutex_t counter_mutex;
106#define counter_lock() lock_mutex(&counter_mutex)
107#define counter_unlock() unlock_mutex(&counter_mutex)
108
109static pthread_mutex_t work_mutex;
110#define work_lock() lock_mutex(&work_mutex)
111#define work_unlock() unlock_mutex(&work_mutex)
112
3aba2fdd
NTND
113static pthread_mutex_t deepest_delta_mutex;
114#define deepest_delta_lock() lock_mutex(&deepest_delta_mutex)
115#define deepest_delta_unlock() unlock_mutex(&deepest_delta_mutex)
116
ab791dd1
JK
117static pthread_mutex_t type_cas_mutex;
118#define type_cas_lock() lock_mutex(&type_cas_mutex)
119#define type_cas_unlock() unlock_mutex(&type_cas_mutex)
120
b8a2486f
NTND
121static pthread_key_t key;
122
123static inline void lock_mutex(pthread_mutex_t *mutex)
124{
125 if (threads_active)
126 pthread_mutex_lock(mutex);
127}
128
129static inline void unlock_mutex(pthread_mutex_t *mutex)
130{
131 if (threads_active)
132 pthread_mutex_unlock(mutex);
133}
134
135/*
136 * Mutex and conditional variable can't be statically-initialized on Windows.
137 */
138static void init_thread(void)
139{
39539495 140 int i;
b8a2486f
NTND
141 init_recursive_mutex(&read_mutex);
142 pthread_mutex_init(&counter_mutex, NULL);
143 pthread_mutex_init(&work_mutex, NULL);
ab791dd1 144 pthread_mutex_init(&type_cas_mutex, NULL);
3aba2fdd
NTND
145 if (show_stat)
146 pthread_mutex_init(&deepest_delta_mutex, NULL);
b8a2486f
NTND
147 pthread_key_create(&key, NULL);
148 thread_data = xcalloc(nr_threads, sizeof(*thread_data));
39539495
NTND
149 for (i = 0; i < nr_threads; i++) {
150 thread_data[i].pack_fd = open(curr_pack, O_RDONLY);
151 if (thread_data[i].pack_fd == -1)
152 die_errno(_("unable to open %s"), curr_pack);
153 }
154
b8a2486f
NTND
155 threads_active = 1;
156}
157
158static void cleanup_thread(void)
159{
39539495 160 int i;
b8a2486f
NTND
161 if (!threads_active)
162 return;
163 threads_active = 0;
164 pthread_mutex_destroy(&read_mutex);
165 pthread_mutex_destroy(&counter_mutex);
166 pthread_mutex_destroy(&work_mutex);
ab791dd1 167 pthread_mutex_destroy(&type_cas_mutex);
3aba2fdd
NTND
168 if (show_stat)
169 pthread_mutex_destroy(&deepest_delta_mutex);
39539495
NTND
170 for (i = 0; i < nr_threads; i++)
171 close(thread_data[i].pack_fd);
b8a2486f
NTND
172 pthread_key_delete(key);
173 free(thread_data);
174}
175
176#else
177
178#define read_lock()
179#define read_unlock()
180
181#define counter_lock()
182#define counter_unlock()
183
184#define work_lock()
185#define work_unlock()
186
3aba2fdd
NTND
187#define deepest_delta_lock()
188#define deepest_delta_unlock()
189
e0e21283
EB
190#define type_cas_lock()
191#define type_cas_unlock()
192
b8a2486f
NTND
193#endif
194
195
22410549 196static int mark_link(struct object *obj, int type, void *data, struct fsck_options *options)
0153be05
MK
197{
198 if (!obj)
199 return -1;
200
201 if (type != OBJ_ANY && obj->type != type)
f2fd0760 202 die(_("object type mismatch at %s"), oid_to_hex(&obj->oid));
0153be05
MK
203
204 obj->flags |= FLAG_LINK;
205 return 0;
206}
207
208/* The content of each linked object must have been checked
209 or it must be already present in the object database */
c6807a40 210static unsigned check_object(struct object *obj)
0153be05
MK
211{
212 if (!obj)
c6807a40 213 return 0;
0153be05
MK
214
215 if (!(obj->flags & FLAG_LINK))
c6807a40 216 return 0;
0153be05
MK
217
218 if (!(obj->flags & FLAG_CHECKED)) {
219 unsigned long size;
ed1c9977 220 int type = sha1_object_info(obj->oid.hash, &size);
77583e77
JK
221 if (type <= 0)
222 die(_("did not receive expected object %s"),
f2fd0760 223 oid_to_hex(&obj->oid));
77583e77
JK
224 if (type != obj->type)
225 die(_("object %s: expected type %s, found %s"),
f2fd0760 226 oid_to_hex(&obj->oid),
77583e77 227 typename(obj->type), typename(type));
0153be05 228 obj->flags |= FLAG_CHECKED;
c6807a40 229 return 1;
0153be05 230 }
c6807a40
NTND
231
232 return 0;
0153be05
MK
233}
234
c6807a40 235static unsigned check_objects(void)
0153be05 236{
c6807a40 237 unsigned i, max, foreign_nr = 0;
0153be05
MK
238
239 max = get_max_object_index();
240 for (i = 0; i < max; i++)
c6807a40
NTND
241 foreign_nr += check_object(get_indexed_object(i));
242 return foreign_nr;
0153be05
MK
243}
244
245
636171cb 246/* Discard current buffer used content. */
a6e8a767 247static void flush(void)
636171cb
NP
248{
249 if (input_offset) {
250 if (output_fd >= 0)
251 write_or_die(output_fd, input_buffer, input_offset);
9126f009 252 git_SHA1_Update(&input_ctx, input_buffer, input_offset);
554a2636 253 memmove(input_buffer, input_buffer + input_offset, input_len);
636171cb
NP
254 input_offset = 0;
255 }
256}
257
2d477051
NP
258/*
259 * Make sure at least "min" bytes are available in the buffer, and
260 * return the pointer to the buffer.
261 */
b89c4e93 262static void *fill(int min)
9cf6d335 263{
2d477051
NP
264 if (min <= input_len)
265 return input_buffer + input_offset;
266 if (min > sizeof(input_buffer))
c2b97ecf
NTND
267 die(Q_("cannot fill %d byte",
268 "cannot fill %d bytes",
269 min),
270 min);
636171cb 271 flush();
2d477051 272 do {
8a912bcb 273 ssize_t ret = xread(input_fd, input_buffer + input_len,
2d477051
NP
274 sizeof(input_buffer) - input_len);
275 if (ret <= 0) {
276 if (!ret)
c2b97ecf
NTND
277 die(_("early EOF"));
278 die_errno(_("read error on input"));
2d477051
NP
279 }
280 input_len += ret;
218558af
NP
281 if (from_stdin)
282 display_throughput(progress, consumed_bytes + input_len);
2d477051
NP
283 } while (input_len < min);
284 return input_buffer;
285}
286
287static void use(int bytes)
288{
289 if (bytes > input_len)
c2b97ecf 290 die(_("used more bytes than were available"));
ee5743ce 291 input_crc32 = crc32(input_crc32, input_buffer + input_offset, bytes);
2d477051
NP
292 input_len -= bytes;
293 input_offset += bytes;
d7dd0223
NP
294
295 /* make sure off_t is sufficiently large not to wrap */
c03c8315 296 if (signed_add_overflows(consumed_bytes, bytes))
c2b97ecf 297 die(_("pack too large for current definition of off_t"));
2d477051
NP
298 consumed_bytes += bytes;
299}
9cf6d335 300
3bb72562 301static const char *open_pack_file(const char *pack_name)
2d477051 302{
e42797f5
NP
303 if (from_stdin) {
304 input_fd = 0;
305 if (!pack_name) {
ab1900a3
ÆAB
306 static char tmp_file[PATH_MAX];
307 output_fd = odb_mkstemp(tmp_file, sizeof(tmp_file),
6e180cdc 308 "pack/tmp_pack_XXXXXX");
ab1900a3 309 pack_name = xstrdup(tmp_file);
e42797f5
NP
310 } else
311 output_fd = open(pack_name, O_CREAT|O_EXCL|O_RDWR, 0600);
312 if (output_fd < 0)
c2b97ecf 313 die_errno(_("unable to create '%s'"), pack_name);
39539495 314 nothread_data.pack_fd = output_fd;
e42797f5
NP
315 } else {
316 input_fd = open(pack_name, O_RDONLY);
317 if (input_fd < 0)
c2b97ecf 318 die_errno(_("cannot open packfile '%s'"), pack_name);
e42797f5 319 output_fd = -1;
39539495 320 nothread_data.pack_fd = input_fd;
e42797f5 321 }
9126f009 322 git_SHA1_Init(&input_ctx);
e42797f5 323 return pack_name;
9cf6d335
SV
324}
325
326static void parse_pack_header(void)
327{
2d477051 328 struct pack_header *hdr = fill(sizeof(struct pack_header));
9cf6d335
SV
329
330 /* Header consistency check */
9cf6d335 331 if (hdr->hdr_signature != htonl(PACK_SIGNATURE))
c2b97ecf 332 die(_("pack signature mismatch"));
d60fc1c8 333 if (!pack_version_ok(hdr->hdr_version))
f350df42 334 die(_("pack version %"PRIu32" unsupported"),
6e1c2344 335 ntohl(hdr->hdr_version));
9cf6d335
SV
336
337 nr_objects = ntohl(hdr->hdr_entries);
2d477051 338 use(sizeof(struct pack_header));
9cf6d335
SV
339}
340
a4f3131c
EFL
341static NORETURN void bad_object(unsigned long offset, const char *format,
342 ...) __attribute__((format (printf, 2, 3)));
9cf6d335 343
c2e86add 344static NORETURN void bad_object(unsigned long offset, const char *format, ...)
9cf6d335
SV
345{
346 va_list params;
347 char buf[1024];
348
349 va_start(params, format);
350 vsnprintf(buf, sizeof(buf), format, params);
351 va_end(params);
c2b97ecf 352 die(_("pack has bad object at offset %lu: %s"), offset, buf);
9cf6d335
SV
353}
354
b8a2486f
NTND
355static inline struct thread_local *get_thread_data(void)
356{
357#ifndef NO_PTHREADS
358 if (threads_active)
359 return pthread_getspecific(key);
360 assert(!threads_active &&
361 "This should only be reached when all threads are gone");
362#endif
363 return &nothread_data;
364}
365
366#ifndef NO_PTHREADS
367static void set_thread_data(struct thread_local *data)
368{
369 if (threads_active)
370 pthread_setspecific(key, data);
371}
372#endif
373
2baad220
NTND
374static struct base_data *alloc_base_data(void)
375{
51a60f5b 376 struct base_data *base = xcalloc(1, sizeof(struct base_data));
2baad220
NTND
377 base->ref_last = -1;
378 base->ofs_last = -1;
379 return base;
380}
381
6a87ed97
NP
382static void free_base_data(struct base_data *c)
383{
384 if (c->data) {
385 free(c->data);
386 c->data = NULL;
b8a2486f 387 get_thread_data()->base_cache_used -= c->size;
6a87ed97
NP
388 }
389}
390
92392b4a
SP
391static void prune_base_data(struct base_data *retain)
392{
8e24cbae 393 struct base_data *b;
b8a2486f
NTND
394 struct thread_local *data = get_thread_data();
395 for (b = data->base_cache;
396 data->base_cache_used > delta_base_cache_limit && b;
92392b4a 397 b = b->child) {
6a87ed97
NP
398 if (b->data && b != retain)
399 free_base_data(b);
92392b4a
SP
400 }
401}
402
4a438cab
SP
403static void link_base_data(struct base_data *base, struct base_data *c)
404{
405 if (base)
406 base->child = c;
407 else
b8a2486f 408 get_thread_data()->base_cache = c;
4a438cab
SP
409
410 c->base = base;
411 c->child = NULL;
9441b61d 412 if (c->data)
b8a2486f 413 get_thread_data()->base_cache_used += c->size;
92392b4a 414 prune_base_data(c);
4a438cab
SP
415}
416
417static void unlink_base_data(struct base_data *c)
418{
419 struct base_data *base = c->base;
420 if (base)
421 base->child = NULL;
422 else
b8a2486f 423 get_thread_data()->base_cache = NULL;
6a87ed97 424 free_base_data(c);
4a438cab
SP
425}
426
681b07de
NTND
427static int is_delta_type(enum object_type type)
428{
429 return (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA);
430}
431
432static void *unpack_entry_data(unsigned long offset, unsigned long size,
433 enum object_type type, unsigned char *sha1)
9cf6d335 434{
9ec2dde9 435 static char fixed_buf[8192];
7ce4721a 436 int status;
ef49a7a0 437 git_zstream stream;
9ec2dde9 438 void *buf;
681b07de
NTND
439 git_SHA_CTX c;
440 char hdr[32];
441 int hdrlen;
442
443 if (!is_delta_type(type)) {
ef1286d3 444 hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(type), size) + 1;
681b07de
NTND
445 git_SHA1_Init(&c);
446 git_SHA1_Update(&c, hdr, hdrlen);
447 } else
448 sha1 = NULL;
9ec2dde9
NTND
449 if (type == OBJ_BLOB && size > big_file_threshold)
450 buf = fixed_buf;
451 else
a1e920a0 452 buf = xmallocz(size);
9cf6d335
SV
453
454 memset(&stream, 0, sizeof(stream));
7ce4721a 455 git_inflate_init(&stream);
9cf6d335 456 stream.next_out = buf;
9ec2dde9 457 stream.avail_out = buf == fixed_buf ? sizeof(fixed_buf) : size;
9cf6d335 458
7ce4721a 459 do {
681b07de 460 unsigned char *last_out = stream.next_out;
2d477051
NP
461 stream.next_in = fill(1);
462 stream.avail_in = input_len;
7ce4721a
NP
463 status = git_inflate(&stream, 0);
464 use(input_len - stream.avail_in);
681b07de
NTND
465 if (sha1)
466 git_SHA1_Update(&c, last_out, stream.next_out - last_out);
9ec2dde9
NTND
467 if (buf == fixed_buf) {
468 stream.next_out = buf;
469 stream.avail_out = sizeof(fixed_buf);
470 }
7ce4721a
NP
471 } while (status == Z_OK);
472 if (stream.total_out != size || status != Z_STREAM_END)
c2b97ecf 473 bad_object(offset, _("inflate returned %d"), status);
39c68542 474 git_inflate_end(&stream);
681b07de
NTND
475 if (sha1)
476 git_SHA1_Final(sha1, &c);
9ec2dde9 477 return buf == fixed_buf ? NULL : buf;
9cf6d335
SV
478}
479
681b07de 480static void *unpack_raw_entry(struct object_entry *obj,
c6458e60
NTND
481 off_t *ofs_offset,
482 unsigned char *ref_sha1,
681b07de 483 unsigned char *sha1)
9cf6d335 484{
48fb7deb
LT
485 unsigned char *p;
486 unsigned long size, c;
d7dd0223 487 off_t base_offset;
9cf6d335 488 unsigned shift;
ee5743ce 489 void *data;
9cf6d335 490
aa7e44bf 491 obj->idx.offset = consumed_bytes;
1e4cd68c 492 input_crc32 = crc32(0, NULL, 0);
2d477051
NP
493
494 p = fill(1);
495 c = *p;
496 use(1);
497 obj->type = (c >> 4) & 7;
9cf6d335
SV
498 size = (c & 15);
499 shift = 4;
500 while (c & 0x80) {
2d477051
NP
501 p = fill(1);
502 c = *p;
503 use(1);
48fb7deb 504 size += (c & 0x7f) << shift;
9cf6d335
SV
505 shift += 7;
506 }
2d477051 507 obj->size = size;
9cf6d335 508
2d477051 509 switch (obj->type) {
eb32d236 510 case OBJ_REF_DELTA:
c6458e60 511 hashcpy(ref_sha1, fill(20));
2d477051 512 use(20);
53dda6ff
NP
513 break;
514 case OBJ_OFS_DELTA:
2d477051
NP
515 p = fill(1);
516 c = *p;
517 use(1);
53dda6ff
NP
518 base_offset = c & 127;
519 while (c & 128) {
520 base_offset += 1;
8723f216 521 if (!base_offset || MSB(base_offset, 7))
c2b97ecf 522 bad_object(obj->idx.offset, _("offset value overflow for delta base object"));
2d477051
NP
523 p = fill(1);
524 c = *p;
525 use(1);
53dda6ff
NP
526 base_offset = (base_offset << 7) + (c & 127);
527 }
c6458e60
NTND
528 *ofs_offset = obj->idx.offset - base_offset;
529 if (*ofs_offset <= 0 || *ofs_offset >= obj->idx.offset)
c2b97ecf 530 bad_object(obj->idx.offset, _("delta base offset is out of bound"));
53dda6ff 531 break;
9cf6d335
SV
532 case OBJ_COMMIT:
533 case OBJ_TREE:
534 case OBJ_BLOB:
535 case OBJ_TAG:
9cf6d335
SV
536 break;
537 default:
c2b97ecf 538 bad_object(obj->idx.offset, _("unknown object type %d"), obj->type);
9cf6d335 539 }
aa7e44bf 540 obj->hdr_size = consumed_bytes - obj->idx.offset;
2d477051 541
681b07de 542 data = unpack_entry_data(obj->idx.offset, obj->size, obj->type, sha1);
aa7e44bf 543 obj->idx.crc32 = input_crc32;
ee5743ce 544 return data;
2d477051
NP
545}
546
8a2e163c
NTND
547static void *unpack_data(struct object_entry *obj,
548 int (*consume)(const unsigned char *, unsigned long, void *),
549 void *cb_data)
2d477051 550{
a91ef6e7 551 off_t from = obj[0].idx.offset + obj[0].hdr_size;
aa7e44bf 552 unsigned long len = obj[1].idx.offset - from;
776ea370 553 unsigned char *data, *inbuf;
ef49a7a0 554 git_zstream stream;
776ea370 555 int status;
9cf6d335 556
a1e920a0 557 data = xmallocz(consume ? 64*1024 : obj->size);
776ea370
NP
558 inbuf = xmalloc((len < 64*1024) ? len : 64*1024);
559
2d477051 560 memset(&stream, 0, sizeof(stream));
776ea370 561 git_inflate_init(&stream);
2d477051 562 stream.next_out = data;
8a2e163c 563 stream.avail_out = consume ? 64*1024 : obj->size;
776ea370
NP
564
565 do {
566 ssize_t n = (len < 64*1024) ? len : 64*1024;
53f52cd9 567 n = xpread(get_thread_data()->pack_fd, inbuf, n, from);
776ea370 568 if (n < 0)
c2b97ecf 569 die_errno(_("cannot pread pack file"));
776ea370 570 if (!n)
c2b97ecf
NTND
571 die(Q_("premature end of pack file, %lu byte missing",
572 "premature end of pack file, %lu bytes missing",
573 len),
574 len);
776ea370
NP
575 from += n;
576 len -= n;
577 stream.next_in = inbuf;
578 stream.avail_in = n;
f8b09038
JK
579 if (!consume)
580 status = git_inflate(&stream, 0);
581 else {
582 do {
583 status = git_inflate(&stream, 0);
584 if (consume(data, stream.next_out - data, cb_data)) {
585 free(inbuf);
586 free(data);
587 return NULL;
588 }
589 stream.next_out = data;
590 stream.avail_out = 64*1024;
591 } while (status == Z_OK && stream.avail_in);
8a2e163c 592 }
776ea370
NP
593 } while (len && status == Z_OK && !stream.avail_in);
594
595 /* This has been inflated OK when first encountered, so... */
596 if (status != Z_STREAM_END || stream.total_out != obj->size)
c2b97ecf 597 die(_("serious inflate inconsistency"));
776ea370
NP
598
599 git_inflate_end(&stream);
600 free(inbuf);
8a2e163c
NTND
601 if (consume) {
602 free(data);
603 data = NULL;
604 }
9cf6d335
SV
605 return data;
606}
607
8a2e163c
NTND
608static void *get_data_from_pack(struct object_entry *obj)
609{
610 return unpack_data(obj, NULL, NULL);
611}
612
c6458e60
NTND
613static int compare_ofs_delta_bases(off_t offset1, off_t offset2,
614 enum object_type type1,
615 enum object_type type2)
7218a215
JH
616{
617 int cmp = type1 - type2;
618 if (cmp)
619 return cmp;
f0e7f11d
JK
620 return offset1 < offset2 ? -1 :
621 offset1 > offset2 ? 1 :
622 0;
7218a215
JH
623}
624
c6458e60 625static int find_ofs_delta(const off_t offset, enum object_type type)
9cf6d335 626{
c6458e60
NTND
627 int first = 0, last = nr_ofs_deltas;
628
629 while (first < last) {
630 int next = (first + last) / 2;
631 struct ofs_delta_entry *delta = &ofs_deltas[next];
632 int cmp;
633
634 cmp = compare_ofs_delta_bases(offset, delta->offset,
635 type, objects[delta->obj_no].type);
636 if (!cmp)
637 return next;
638 if (cmp < 0) {
639 last = next;
640 continue;
641 }
642 first = next+1;
643 }
644 return -first-1;
9cf6d335
SV
645}
646
c6458e60
NTND
647static void find_ofs_delta_children(off_t offset,
648 int *first_index, int *last_index,
649 enum object_type type)
9cf6d335 650{
c6458e60 651 int first = find_ofs_delta(offset, type);
9cf6d335 652 int last = first;
c6458e60 653 int end = nr_ofs_deltas - 1;
9cf6d335 654
6a87ed97
NP
655 if (first < 0) {
656 *first_index = 0;
657 *last_index = -1;
658 return;
659 }
c6458e60 660 while (first > 0 && ofs_deltas[first - 1].offset == offset)
9cf6d335 661 --first;
c6458e60
NTND
662 while (last < end && ofs_deltas[last + 1].offset == offset)
663 ++last;
664 *first_index = first;
665 *last_index = last;
666}
667
668static int compare_ref_delta_bases(const unsigned char *sha1,
669 const unsigned char *sha2,
670 enum object_type type1,
671 enum object_type type2)
672{
673 int cmp = type1 - type2;
674 if (cmp)
675 return cmp;
676 return hashcmp(sha1, sha2);
677}
678
679static int find_ref_delta(const unsigned char *sha1, enum object_type type)
680{
681 int first = 0, last = nr_ref_deltas;
682
683 while (first < last) {
684 int next = (first + last) / 2;
685 struct ref_delta_entry *delta = &ref_deltas[next];
686 int cmp;
687
688 cmp = compare_ref_delta_bases(sha1, delta->sha1,
689 type, objects[delta->obj_no].type);
690 if (!cmp)
691 return next;
692 if (cmp < 0) {
693 last = next;
694 continue;
695 }
696 first = next+1;
697 }
698 return -first-1;
699}
700
701static void find_ref_delta_children(const unsigned char *sha1,
702 int *first_index, int *last_index,
703 enum object_type type)
704{
705 int first = find_ref_delta(sha1, type);
706 int last = first;
707 int end = nr_ref_deltas - 1;
708
709 if (first < 0) {
710 *first_index = 0;
711 *last_index = -1;
712 return;
713 }
714 while (first > 0 && !hashcmp(ref_deltas[first - 1].sha1, sha1))
715 --first;
716 while (last < end && !hashcmp(ref_deltas[last + 1].sha1, sha1))
9cf6d335
SV
717 ++last;
718 *first_index = first;
719 *last_index = last;
9cf6d335
SV
720}
721
4614043c
NTND
722struct compare_data {
723 struct object_entry *entry;
724 struct git_istream *st;
725 unsigned char *buf;
726 unsigned long buf_size;
727};
728
729static int compare_objects(const unsigned char *buf, unsigned long size,
730 void *cb_data)
731{
732 struct compare_data *data = cb_data;
733
734 if (data->buf_size < size) {
735 free(data->buf);
736 data->buf = xmalloc(size);
737 data->buf_size = size;
738 }
739
740 while (size) {
741 ssize_t len = read_istream(data->st, data->buf, size);
742 if (len == 0)
743 die(_("SHA1 COLLISION FOUND WITH %s !"),
744 sha1_to_hex(data->entry->idx.sha1));
745 if (len < 0)
746 die(_("unable to read %s"),
747 sha1_to_hex(data->entry->idx.sha1));
748 if (memcmp(buf, data->buf, len))
749 die(_("SHA1 COLLISION FOUND WITH %s !"),
750 sha1_to_hex(data->entry->idx.sha1));
751 size -= len;
752 buf += len;
753 }
754 return 0;
755}
756
757static int check_collison(struct object_entry *entry)
758{
759 struct compare_data data;
760 enum object_type type;
761 unsigned long size;
762
763 if (entry->size <= big_file_threshold || entry->type != OBJ_BLOB)
764 return -1;
765
766 memset(&data, 0, sizeof(data));
767 data.entry = entry;
768 data.st = open_istream(entry->idx.sha1, &type, &size, NULL);
769 if (!data.st)
770 return -1;
771 if (size != entry->size || type != entry->type)
772 die(_("SHA1 COLLISION FOUND WITH %s !"),
773 sha1_to_hex(entry->idx.sha1));
774 unpack_data(entry, compare_objects, &data);
775 close_istream(data.st);
776 free(data.buf);
777 return 0;
778}
779
9ec2dde9
NTND
780static void sha1_object(const void *data, struct object_entry *obj_entry,
781 unsigned long size, enum object_type type,
782 const unsigned char *sha1)
9cf6d335 783{
9ec2dde9 784 void *new_data = NULL;
4614043c 785 int collision_test_needed;
9ec2dde9
NTND
786
787 assert(data || obj_entry);
788
b8a2486f 789 read_lock();
0eeb077b 790 collision_test_needed = has_sha1_file_with_flags(sha1, HAS_SHA1_QUICK);
4614043c
NTND
791 read_unlock();
792
793 if (collision_test_needed && !data) {
794 read_lock();
795 if (!check_collison(obj_entry))
796 collision_test_needed = 0;
797 read_unlock();
798 }
799 if (collision_test_needed) {
8685da42
NP
800 void *has_data;
801 enum object_type has_type;
802 unsigned long has_size;
4614043c
NTND
803 read_lock();
804 has_type = sha1_object_info(sha1, &has_size);
805 if (has_type != type || has_size != size)
806 die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1));
8685da42 807 has_data = read_sha1_file(sha1, &has_type, &has_size);
b8a2486f 808 read_unlock();
4614043c
NTND
809 if (!data)
810 data = new_data = get_data_from_pack(obj_entry);
8685da42 811 if (!has_data)
c2b97ecf 812 die(_("cannot read existing object %s"), sha1_to_hex(sha1));
8685da42
NP
813 if (size != has_size || type != has_type ||
814 memcmp(data, has_data, size) != 0)
c2b97ecf 815 die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1));
bbf4b41b 816 free(has_data);
4614043c 817 }
b8a2486f 818
0153be05 819 if (strict) {
b8a2486f 820 read_lock();
0153be05
MK
821 if (type == OBJ_BLOB) {
822 struct blob *blob = lookup_blob(sha1);
823 if (blob)
824 blob->object.flags |= FLAG_CHECKED;
825 else
c2b97ecf 826 die(_("invalid blob object %s"), sha1_to_hex(sha1));
0153be05
MK
827 } else {
828 struct object *obj;
829 int eaten;
830 void *buf = (void *) data;
831
920734b0 832 assert(data && "data can only be NULL for large _blobs_");
9ec2dde9 833
0153be05
MK
834 /*
835 * we do not need to free the memory here, as the
836 * buf is deleted by the caller.
837 */
838 obj = parse_object_buffer(sha1, type, size, buf, &eaten);
839 if (!obj)
c2b97ecf 840 die(_("invalid %s"), typename(type));
c6807a40 841 if (do_fsck_object &&
22410549 842 fsck_object(obj, buf, size, &fsck_options))
c2b97ecf 843 die(_("Error in object"));
22410549 844 if (fsck_walk(obj, NULL, &fsck_options))
f2fd0760 845 die(_("Not all child objects of %s are reachable"), oid_to_hex(&obj->oid));
0153be05
MK
846
847 if (obj->type == OBJ_TREE) {
848 struct tree *item = (struct tree *) obj;
849 item->buffer = NULL;
6e454b9a 850 obj->parsed = 0;
0153be05
MK
851 }
852 if (obj->type == OBJ_COMMIT) {
853 struct commit *commit = (struct commit *) obj;
8597ea3a 854 if (detach_commit_buffer(commit, NULL) != data)
0fb370da 855 die("BUG: parse_object_buffer transmogrified our buffer");
0153be05
MK
856 }
857 obj->flags |= FLAG_CHECKED;
858 }
b8a2486f 859 read_unlock();
0153be05 860 }
9ec2dde9
NTND
861
862 free(new_data);
9cf6d335
SV
863}
864
20e95d0a
NTND
865/*
866 * This function is part of find_unresolved_deltas(). There are two
867 * walkers going in the opposite ways.
868 *
869 * The first one in find_unresolved_deltas() traverses down from
870 * parent node to children, deflating nodes along the way. However,
871 * memory for deflated nodes is limited by delta_base_cache_limit, so
872 * at some point parent node's deflated content may be freed.
873 *
874 * The second walker is this function, which goes from current node up
875 * to top parent if necessary to deflate the node. In normal
876 * situation, its parent node would be already deflated, so it just
877 * needs to apply delta.
878 *
879 * In the worst case scenario, parent node is no longer deflated because
880 * we're running out of delta_base_cache_limit; we need to re-deflate
881 * parents, possibly up to the top base.
882 *
883 * All deflated objects here are subject to be freed if we exceed
884 * delta_base_cache_limit, just like in find_unresolved_deltas(), we
885 * just need to make sure the last node is not freed.
886 */
92392b4a
SP
887static void *get_base_data(struct base_data *c)
888{
889 if (!c->data) {
890 struct object_entry *obj = c->obj;
20e95d0a
NTND
891 struct base_data **delta = NULL;
892 int delta_nr = 0, delta_alloc = 0;
92392b4a 893
20e95d0a
NTND
894 while (is_delta_type(c->obj->type) && !c->data) {
895 ALLOC_GROW(delta, delta_nr + 1, delta_alloc);
896 delta[delta_nr++] = c;
897 c = c->base;
898 }
899 if (!delta_nr) {
900 c->data = get_data_from_pack(obj);
901 c->size = obj->size;
b8a2486f 902 get_thread_data()->base_cache_used += c->size;
20e95d0a
NTND
903 prune_base_data(c);
904 }
905 for (; delta_nr > 0; delta_nr--) {
906 void *base, *raw;
907 c = delta[delta_nr - 1];
908 obj = c->obj;
909 base = get_base_data(c->base);
910 raw = get_data_from_pack(obj);
92392b4a
SP
911 c->data = patch_delta(
912 base, c->base->size,
913 raw, obj->size,
914 &c->size);
915 free(raw);
916 if (!c->data)
c2b97ecf 917 bad_object(obj->idx.offset, _("failed to apply delta"));
b8a2486f 918 get_thread_data()->base_cache_used += c->size;
20e95d0a 919 prune_base_data(c);
9441b61d 920 }
20e95d0a 921 free(delta);
92392b4a
SP
922 }
923 return c->data;
924}
925
f41aebd4 926static void resolve_delta(struct object_entry *delta_obj,
9441b61d 927 struct base_data *base, struct base_data *result)
9cf6d335 928{
ce3f6dc6 929 void *base_data, *delta_data;
9cf6d335 930
3aba2fdd 931 if (show_stat) {
41730576
NTND
932 int i = delta_obj - objects;
933 int j = base->obj - objects;
934 obj_stat[i].delta_depth = obj_stat[j].delta_depth + 1;
3aba2fdd 935 deepest_delta_lock();
41730576
NTND
936 if (deepest_delta < obj_stat[i].delta_depth)
937 deepest_delta = obj_stat[i].delta_depth;
3aba2fdd 938 deepest_delta_unlock();
41730576 939 obj_stat[i].base_object_no = j;
3aba2fdd 940 }
636171cb 941 delta_data = get_data_from_pack(delta_obj);
ce3f6dc6 942 base_data = get_base_data(base);
9441b61d 943 result->obj = delta_obj;
ce3f6dc6
NP
944 result->data = patch_delta(base_data, base->size,
945 delta_data, delta_obj->size, &result->size);
9cf6d335 946 free(delta_data);
9441b61d 947 if (!result->data)
c2b97ecf 948 bad_object(delta_obj->idx.offset, _("failed to apply delta"));
681b07de
NTND
949 hash_sha1_file(result->data, result->size,
950 typename(delta_obj->real_type), delta_obj->idx.sha1);
9ec2dde9 951 sha1_object(result->data, NULL, result->size, delta_obj->real_type,
9441b61d 952 delta_obj->idx.sha1);
b8a2486f 953 counter_lock();
636171cb 954 nr_resolved_deltas++;
b8a2486f 955 counter_unlock();
9441b61d
NP
956}
957
ab791dd1
JK
958/*
959 * Standard boolean compare-and-swap: atomically check whether "*type" is
960 * "want"; if so, swap in "set" and return true. Otherwise, leave it untouched
961 * and return false.
962 */
41730576 963static int compare_and_swap_type(signed char *type,
ab791dd1
JK
964 enum object_type want,
965 enum object_type set)
966{
967 enum object_type old;
968
969 type_cas_lock();
970 old = *type;
971 if (old == want)
972 *type = set;
973 type_cas_unlock();
974
975 return old == want;
976}
977
2baad220
NTND
978static struct base_data *find_unresolved_deltas_1(struct base_data *base,
979 struct base_data *prev_base)
9441b61d 980{
2baad220 981 if (base->ref_last == -1 && base->ofs_last == -1) {
c6458e60
NTND
982 find_ref_delta_children(base->obj->idx.sha1,
983 &base->ref_first, &base->ref_last,
984 OBJ_REF_DELTA);
9441b61d 985
c6458e60
NTND
986 find_ofs_delta_children(base->obj->idx.offset,
987 &base->ofs_first, &base->ofs_last,
988 OBJ_OFS_DELTA);
4a438cab 989
2baad220
NTND
990 if (base->ref_last == -1 && base->ofs_last == -1) {
991 free(base->data);
992 return NULL;
993 }
53dda6ff 994
2baad220
NTND
995 link_base_data(prev_base, base);
996 }
4a438cab 997
2baad220 998 if (base->ref_first <= base->ref_last) {
c6458e60 999 struct object_entry *child = objects + ref_deltas[base->ref_first].obj_no;
2baad220 1000 struct base_data *result = alloc_base_data();
7218a215 1001
ab791dd1
JK
1002 if (!compare_and_swap_type(&child->real_type, OBJ_REF_DELTA,
1003 base->obj->real_type))
1004 die("BUG: child->real_type != OBJ_REF_DELTA");
1005
2baad220
NTND
1006 resolve_delta(child, base, result);
1007 if (base->ref_first == base->ref_last && base->ofs_last == -1)
7218a215 1008 free_base_data(base);
2baad220
NTND
1009
1010 base->ref_first++;
1011 return result;
53dda6ff
NP
1012 }
1013
2baad220 1014 if (base->ofs_first <= base->ofs_last) {
c6458e60 1015 struct object_entry *child = objects + ofs_deltas[base->ofs_first].obj_no;
2baad220 1016 struct base_data *result = alloc_base_data();
7218a215
JH
1017
1018 assert(child->real_type == OBJ_OFS_DELTA);
ab791dd1 1019 child->real_type = base->obj->real_type;
2baad220
NTND
1020 resolve_delta(child, base, result);
1021 if (base->ofs_first == base->ofs_last)
7218a215 1022 free_base_data(base);
2baad220
NTND
1023
1024 base->ofs_first++;
1025 return result;
9cf6d335 1026 }
53dda6ff 1027
9441b61d 1028 unlink_base_data(base);
2baad220
NTND
1029 return NULL;
1030}
1031
1032static void find_unresolved_deltas(struct base_data *base)
1033{
1034 struct base_data *new_base, *prev_base = NULL;
1035 for (;;) {
1036 new_base = find_unresolved_deltas_1(base, prev_base);
1037
1038 if (new_base) {
1039 prev_base = base;
1040 base = new_base;
1041 } else {
1042 free(base);
1043 base = prev_base;
1044 if (!base)
1045 return;
1046 prev_base = base->base;
1047 }
1048 }
9cf6d335
SV
1049}
1050
c6458e60 1051static int compare_ofs_delta_entry(const void *a, const void *b)
9cf6d335 1052{
c6458e60
NTND
1053 const struct ofs_delta_entry *delta_a = a;
1054 const struct ofs_delta_entry *delta_b = b;
7218a215 1055
f0e7f11d
JK
1056 return delta_a->offset < delta_b->offset ? -1 :
1057 delta_a->offset > delta_b->offset ? 1 :
1058 0;
c6458e60
NTND
1059}
1060
1061static int compare_ref_delta_entry(const void *a, const void *b)
9cf6d335 1062{
c6458e60
NTND
1063 const struct ref_delta_entry *delta_a = a;
1064 const struct ref_delta_entry *delta_b = b;
7218a215 1065
c6458e60 1066 return hashcmp(delta_a->sha1, delta_b->sha1);
9cf6d335
SV
1067}
1068
5272f755
NTND
1069static void resolve_base(struct object_entry *obj)
1070{
1071 struct base_data *base_obj = alloc_base_data();
1072 base_obj->obj = obj;
1073 base_obj->data = NULL;
1074 find_unresolved_deltas(base_obj);
1075}
1076
b8a2486f
NTND
1077#ifndef NO_PTHREADS
1078static 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}
1101#endif
1102
5272f755
NTND
1103/*
1104 * First pass:
1105 * - find locations of all objects;
1106 * - calculate SHA1 of all non-delta objects;
1107 * - remember base (SHA1 or offset) for all deltas.
1108 */
2d477051 1109static void parse_pack_objects(unsigned char *sha1)
9cf6d335 1110{
9ec2dde9 1111 int i, nr_delays = 0;
c6458e60
NTND
1112 struct ofs_delta_entry *ofs_delta = ofs_deltas;
1113 unsigned char ref_delta_sha1[20];
2d477051 1114 struct stat st;
9cf6d335 1115
13aaf148 1116 if (verbose)
29e63ed3 1117 progress = start_progress(
c2b97ecf 1118 from_stdin ? _("Receiving objects") : _("Indexing objects"),
29e63ed3 1119 nr_objects);
9cf6d335
SV
1120 for (i = 0; i < nr_objects; i++) {
1121 struct object_entry *obj = &objects[i];
c6458e60
NTND
1122 void *data = unpack_raw_entry(obj, &ofs_delta->offset,
1123 ref_delta_sha1, obj->idx.sha1);
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);
1131 hashcpy(ref_deltas[nr_ref_deltas].sha1, ref_delta_sha1);
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
9ec2dde9 1139 sha1_object(data, NULL, obj->size, obj->type, obj->idx.sha1);
9cf6d335 1140 free(data);
4d4fcc54 1141 display_progress(progress, i+1);
9cf6d335 1142 }
aa7e44bf 1143 objects[i].idx.offset = consumed_bytes;
4d4fcc54 1144 stop_progress(&progress);
2d477051
NP
1145
1146 /* Check pack integrity */
636171cb 1147 flush();
9126f009 1148 git_SHA1_Final(sha1, &input_ctx);
2d477051 1149 if (hashcmp(fill(20), sha1))
c2b97ecf 1150 die(_("pack is corrupted (SHA1 mismatch)"));
9bee2478 1151 use(20);
2d477051
NP
1152
1153 /* If input_fd is a file, we should have reached its end now. */
1154 if (fstat(input_fd, &st))
c2b97ecf 1155 die_errno(_("cannot fstat packfile"));
fa257b05
JS
1156 if (S_ISREG(st.st_mode) &&
1157 lseek(input_fd, 0, SEEK_CUR) - input_len != st.st_size)
c2b97ecf 1158 die(_("pack has junk at the end"));
9ec2dde9
NTND
1159
1160 for (i = 0; i < nr_objects; i++) {
1161 struct object_entry *obj = &objects[i];
1162 if (obj->real_type != OBJ_BAD)
1163 continue;
1164 obj->real_type = obj->type;
1165 sha1_object(NULL, obj, obj->size, obj->type, obj->idx.sha1);
1166 nr_delays--;
1167 }
1168 if (nr_delays)
1169 die(_("confusion beyond insanity in parse_pack_objects()"));
5272f755
NTND
1170}
1171
1172/*
1173 * Second pass:
1174 * - for all non-delta objects, look if it is used as a base for
1175 * deltas;
1176 * - if used as a base, uncompress the object and apply all deltas,
1177 * recursively checking if the resulting object is used as a base
1178 * for some more deltas.
1179 */
1180static void resolve_deltas(void)
1181{
1182 int i;
9cf6d335 1183
c6458e60 1184 if (!nr_ofs_deltas && !nr_ref_deltas)
3c9af366
NP
1185 return;
1186
53dda6ff 1187 /* Sort deltas by base SHA1/offset for fast searching */
c6458e60
NTND
1188 qsort(ofs_deltas, nr_ofs_deltas, sizeof(struct ofs_delta_entry),
1189 compare_ofs_delta_entry);
1190 qsort(ref_deltas, nr_ref_deltas, sizeof(struct ref_delta_entry),
1191 compare_ref_delta_entry);
9cf6d335 1192
13aaf148 1193 if (verbose)
c6458e60
NTND
1194 progress = start_progress(_("Resolving deltas"),
1195 nr_ref_deltas + nr_ofs_deltas);
b8a2486f
NTND
1196
1197#ifndef NO_PTHREADS
1198 nr_dispatched = 0;
1199 if (nr_threads > 1 || getenv("GIT_FORCE_THREADS")) {
1200 init_thread();
1201 for (i = 0; i < nr_threads; i++) {
1202 int ret = pthread_create(&thread_data[i].thread, NULL,
1203 threaded_second_pass, thread_data + i);
1204 if (ret)
f350df42
NTND
1205 die(_("unable to create thread: %s"),
1206 strerror(ret));
b8a2486f
NTND
1207 }
1208 for (i = 0; i < nr_threads; i++)
1209 pthread_join(thread_data[i].thread, NULL);
1210 cleanup_thread();
1211 return;
1212 }
1213#endif
1214
9cf6d335
SV
1215 for (i = 0; i < nr_objects; i++) {
1216 struct object_entry *obj = &objects[i];
9cf6d335 1217
4f8ec74e 1218 if (is_delta_type(obj->type))
9cf6d335 1219 continue;
5272f755 1220 resolve_base(obj);
4d4fcc54 1221 display_progress(progress, nr_resolved_deltas);
9cf6d335 1222 }
636171cb
NP
1223}
1224
5272f755
NTND
1225/*
1226 * Third pass:
1227 * - append objects to convert thin pack to full pack if required
1228 * - write the final 20-byte SHA-1
1229 */
781d9306 1230static void fix_unresolved_deltas(struct sha1file *f);
5272f755
NTND
1231static void conclude_pack(int fix_thin_pack, const char *curr_pack, unsigned char *pack_sha1)
1232{
c6458e60 1233 if (nr_ref_deltas + nr_ofs_deltas == nr_resolved_deltas) {
5272f755
NTND
1234 stop_progress(&progress);
1235 /* Flush remaining pack final 20-byte SHA1. */
1236 flush();
1237 return;
1238 }
1239
1240 if (fix_thin_pack) {
1241 struct sha1file *f;
1242 unsigned char read_sha1[20], tail_sha1[20];
5c3459fc 1243 struct strbuf msg = STRBUF_INIT;
c6458e60 1244 int nr_unresolved = nr_ofs_deltas + nr_ref_deltas - nr_resolved_deltas;
5272f755
NTND
1245 int nr_objects_initial = nr_objects;
1246 if (nr_unresolved <= 0)
cc13431a 1247 die(_("confusion beyond insanity"));
2756ca43 1248 REALLOC_ARRAY(objects, nr_objects + nr_unresolved + 1);
57165db0
JK
1249 memset(objects + nr_objects + 1, 0,
1250 nr_unresolved * sizeof(*objects));
5272f755 1251 f = sha1fd(output_fd, curr_pack);
781d9306 1252 fix_unresolved_deltas(f);
5c3459fc
NTND
1253 strbuf_addf(&msg, _("completed with %d local objects"),
1254 nr_objects - nr_objects_initial);
1255 stop_progress_msg(&progress, msg.buf);
1256 strbuf_release(&msg);
5272f755
NTND
1257 sha1close(f, tail_sha1, 0);
1258 hashcpy(read_sha1, pack_sha1);
1259 fixup_pack_header_footer(output_fd, pack_sha1,
1260 curr_pack, nr_objects,
1261 read_sha1, consumed_bytes-20);
1262 if (hashcmp(read_sha1, tail_sha1) != 0)
f350df42
NTND
1263 die(_("Unexpected tail checksum for %s "
1264 "(disk corruption?)"), curr_pack);
5272f755 1265 }
c6458e60 1266 if (nr_ofs_deltas + nr_ref_deltas != nr_resolved_deltas)
cc13431a
JH
1267 die(Q_("pack has %d unresolved delta",
1268 "pack has %d unresolved deltas",
c6458e60
NTND
1269 nr_ofs_deltas + nr_ref_deltas - nr_resolved_deltas),
1270 nr_ofs_deltas + nr_ref_deltas - nr_resolved_deltas);
5272f755
NTND
1271}
1272
8522148f 1273static int write_compressed(struct sha1file *f, void *in, unsigned int size)
636171cb 1274{
ef49a7a0 1275 git_zstream stream;
7734d7f2
NP
1276 int status;
1277 unsigned char outbuf[4096];
636171cb 1278
55bb5c91 1279 git_deflate_init(&stream, zlib_compression_level);
636171cb
NP
1280 stream.next_in = in;
1281 stream.avail_in = size;
636171cb 1282
7734d7f2
NP
1283 do {
1284 stream.next_out = outbuf;
1285 stream.avail_out = sizeof(outbuf);
55bb5c91 1286 status = git_deflate(&stream, Z_FINISH);
7734d7f2
NP
1287 sha1write(f, outbuf, sizeof(outbuf) - stream.avail_out);
1288 } while (status == Z_OK);
1289
1290 if (status != Z_STREAM_END)
c2b97ecf 1291 die(_("unable to deflate appended object (%d)"), status);
636171cb 1292 size = stream.total_out;
55bb5c91 1293 git_deflate_end(&stream);
636171cb
NP
1294 return size;
1295}
1296
8522148f 1297static struct object_entry *append_obj_to_pack(struct sha1file *f,
03993e13 1298 const unsigned char *sha1, void *buf,
636171cb
NP
1299 unsigned long size, enum object_type type)
1300{
1301 struct object_entry *obj = &objects[nr_objects++];
1302 unsigned char header[10];
1303 unsigned long s = size;
1304 int n = 0;
1305 unsigned char c = (type << 4) | (s & 15);
1306 s >>= 4;
1307 while (s) {
1308 header[n++] = c | 0x80;
1309 c = s & 0x7f;
1310 s >>= 7;
1311 }
1312 header[n++] = c;
8522148f
NP
1313 crc32_begin(f);
1314 sha1write(f, header, n);
72de2883
BS
1315 obj[0].size = size;
1316 obj[0].hdr_size = n;
1317 obj[0].type = type;
1318 obj[0].real_type = type;
aa7e44bf 1319 obj[1].idx.offset = obj[0].idx.offset + n;
8522148f
NP
1320 obj[1].idx.offset += write_compressed(f, buf, size);
1321 obj[0].idx.crc32 = crc32_end(f);
838cd346 1322 sha1flush(f);
aa7e44bf 1323 hashcpy(obj->idx.sha1, sha1);
03993e13 1324 return obj;
636171cb
NP
1325}
1326
1327static int delta_pos_compare(const void *_a, const void *_b)
1328{
c6458e60
NTND
1329 struct ref_delta_entry *a = *(struct ref_delta_entry **)_a;
1330 struct ref_delta_entry *b = *(struct ref_delta_entry **)_b;
636171cb
NP
1331 return a->obj_no - b->obj_no;
1332}
9cf6d335 1333
781d9306 1334static void fix_unresolved_deltas(struct sha1file *f)
636171cb 1335{
c6458e60 1336 struct ref_delta_entry **sorted_by_pos;
781d9306 1337 int i;
636171cb
NP
1338
1339 /*
1340 * Since many unresolved deltas may well be themselves base objects
1341 * for more unresolved deltas, we really want to include the
1342 * smallest number of base objects that would cover as much delta
1343 * as possible by picking the
1344 * trunc deltas first, allowing for other deltas to resolve without
1345 * additional base objects. Since most base objects are to be found
1346 * before deltas depending on them, a good heuristic is to start
1347 * resolving deltas in the same order as their position in the pack.
1348 */
b32fa95f 1349 ALLOC_ARRAY(sorted_by_pos, nr_ref_deltas);
c6458e60 1350 for (i = 0; i < nr_ref_deltas; i++)
781d9306
JH
1351 sorted_by_pos[i] = &ref_deltas[i];
1352 qsort(sorted_by_pos, nr_ref_deltas, sizeof(*sorted_by_pos), delta_pos_compare);
636171cb 1353
781d9306 1354 for (i = 0; i < nr_ref_deltas; i++) {
c6458e60 1355 struct ref_delta_entry *d = sorted_by_pos[i];
21666f1a 1356 enum object_type type;
2baad220 1357 struct base_data *base_obj = alloc_base_data();
636171cb
NP
1358
1359 if (objects[d->obj_no].real_type != OBJ_REF_DELTA)
1360 continue;
c6458e60 1361 base_obj->data = read_sha1_file(d->sha1, &type, &base_obj->size);
2baad220 1362 if (!base_obj->data)
636171cb 1363 continue;
636171cb 1364
c6458e60 1365 if (check_sha1_signature(d->sha1, base_obj->data,
2baad220 1366 base_obj->size, typename(type)))
c6458e60
NTND
1367 die(_("local object %s is corrupt"), sha1_to_hex(d->sha1));
1368 base_obj->obj = append_obj_to_pack(f, d->sha1,
2baad220
NTND
1369 base_obj->data, base_obj->size, type);
1370 find_unresolved_deltas(base_obj);
4d4fcc54 1371 display_progress(progress, nr_resolved_deltas);
636171cb
NP
1372 }
1373 free(sorted_by_pos);
1374}
1375
e42797f5
NP
1376static void final(const char *final_pack_name, const char *curr_pack_name,
1377 const char *final_index_name, const char *curr_index_name,
b8077709 1378 const char *keep_name, const char *keep_msg,
e42797f5
NP
1379 unsigned char *sha1)
1380{
3a55602e 1381 const char *report = "pack";
e42797f5
NP
1382 char name[PATH_MAX];
1383 int err;
1384
1385 if (!from_stdin) {
1386 close(input_fd);
1387 } else {
4c81b03e 1388 fsync_or_die(output_fd, curr_pack_name);
e42797f5
NP
1389 err = close(output_fd);
1390 if (err)
c2b97ecf 1391 die_errno(_("error while closing pack file"));
e42797f5
NP
1392 }
1393
b8077709
SP
1394 if (keep_msg) {
1395 int keep_fd, keep_msg_len = strlen(keep_msg);
6e180cdc
JH
1396
1397 if (!keep_name)
1398 keep_fd = odb_pack_keep(name, sizeof(name), sha1);
1399 else
1400 keep_fd = open(keep_name, O_RDWR|O_CREAT|O_EXCL, 0600);
1401
9ca4a201
NP
1402 if (keep_fd < 0) {
1403 if (errno != EEXIST)
c2b97ecf 1404 die_errno(_("cannot write keep file '%s'"),
de983a0a 1405 keep_name ? keep_name : name);
9ca4a201
NP
1406 } else {
1407 if (keep_msg_len > 0) {
1408 write_or_die(keep_fd, keep_msg, keep_msg_len);
1409 write_or_die(keep_fd, "\n", 1);
1410 }
91c8d590 1411 if (close(keep_fd) != 0)
c2b97ecf 1412 die_errno(_("cannot close written keep file '%s'"),
de983a0a 1413 keep_name ? keep_name : name);
576162a4 1414 report = "keep";
b8077709 1415 }
b8077709
SP
1416 }
1417
e42797f5
NP
1418 if (final_pack_name != curr_pack_name) {
1419 if (!final_pack_name) {
1420 snprintf(name, sizeof(name), "%s/pack/pack-%s.pack",
1421 get_object_directory(), sha1_to_hex(sha1));
1422 final_pack_name = name;
1423 }
cb5add58 1424 if (finalize_object_file(curr_pack_name, final_pack_name))
c2b97ecf 1425 die(_("cannot store pack file"));
fb8b1936 1426 } else if (from_stdin)
33b65030 1427 chmod(final_pack_name, 0444);
e42797f5 1428
e42797f5
NP
1429 if (final_index_name != curr_index_name) {
1430 if (!final_index_name) {
1431 snprintf(name, sizeof(name), "%s/pack/pack-%s.idx",
1432 get_object_directory(), sha1_to_hex(sha1));
1433 final_index_name = name;
1434 }
cb5add58 1435 if (finalize_object_file(curr_index_name, final_index_name))
c2b97ecf 1436 die(_("cannot store index file"));
fb8b1936
JH
1437 } else
1438 chmod(final_index_name, 0444);
576162a4
NP
1439
1440 if (!from_stdin) {
1441 printf("%s\n", sha1_to_hex(sha1));
1442 } else {
1443 char buf[48];
1444 int len = snprintf(buf, sizeof(buf), "%s\t%s\n",
1445 report, sha1_to_hex(sha1));
d1b2ddc8 1446 write_or_die(1, buf, len);
576162a4
NP
1447
1448 /*
1449 * Let's just mimic git-unpack-objects here and write
1450 * the last part of the input buffer to stdout.
1451 */
1452 while (input_len) {
1453 err = xwrite(1, input_buffer + input_offset, input_len);
1454 if (err <= 0)
1455 break;
1456 input_len -= err;
1457 input_offset += err;
1458 }
1459 }
9cf6d335
SV
1460}
1461
ef90d6d4 1462static int git_index_pack_config(const char *k, const char *v, void *cb)
4d00bda2 1463{
ebcfb379
JH
1464 struct pack_idx_option *opts = cb;
1465
4d00bda2 1466 if (!strcmp(k, "pack.indexversion")) {
ebcfb379
JH
1467 opts->version = git_config_int(k, v);
1468 if (opts->version > 2)
f350df42 1469 die(_("bad pack.indexversion=%"PRIu32), opts->version);
4d00bda2
NP
1470 return 0;
1471 }
b8a2486f
NTND
1472 if (!strcmp(k, "pack.threads")) {
1473 nr_threads = git_config_int(k, v);
1474 if (nr_threads < 0)
f350df42 1475 die(_("invalid number of threads specified (%d)"),
b8a2486f
NTND
1476 nr_threads);
1477#ifdef NO_PTHREADS
1478 if (nr_threads != 1)
f350df42 1479 warning(_("no threads support, ignoring %s"), k);
b8a2486f
NTND
1480 nr_threads = 1;
1481#endif
1482 return 0;
1483 }
ef90d6d4 1484 return git_default_config(k, v, cb);
4d00bda2
NP
1485}
1486
3c9fc074
JH
1487static int cmp_uint32(const void *a_, const void *b_)
1488{
1489 uint32_t a = *((uint32_t *)a_);
1490 uint32_t b = *((uint32_t *)b_);
1491
1492 return (a < b) ? -1 : (a != b);
1493}
1494
1495static void read_v2_anomalous_offsets(struct packed_git *p,
1496 struct pack_idx_option *opts)
1497{
1498 const uint32_t *idx1, *idx2;
1499 uint32_t i;
1500
1501 /* The address of the 4-byte offset table */
1502 idx1 = (((const uint32_t *)p->index_data)
1503 + 2 /* 8-byte header */
1504 + 256 /* fan out */
1505 + 5 * p->num_objects /* 20-byte SHA-1 table */
1506 + p->num_objects /* CRC32 table */
1507 );
1508
1509 /* The address of the 8-byte offset table */
1510 idx2 = idx1 + p->num_objects;
1511
1512 for (i = 0; i < p->num_objects; i++) {
1513 uint32_t off = ntohl(idx1[i]);
1514 if (!(off & 0x80000000))
1515 continue;
1516 off = off & 0x7fffffff;
1517 if (idx2[off * 2])
1518 continue;
1519 /*
1520 * The real offset is ntohl(idx2[off * 2]) in high 4
1521 * octets, and ntohl(idx2[off * 2 + 1]) in low 4
1522 * octets. But idx2[off * 2] is Zero!!!
1523 */
1524 ALLOC_GROW(opts->anomaly, opts->anomaly_nr + 1, opts->anomaly_alloc);
1525 opts->anomaly[opts->anomaly_nr++] = ntohl(idx2[off * 2 + 1]);
1526 }
1527
1528 if (1 < opts->anomaly_nr)
1529 qsort(opts->anomaly, opts->anomaly_nr, sizeof(uint32_t), cmp_uint32);
1530}
1531
e337a04d
JH
1532static void read_idx_option(struct pack_idx_option *opts, const char *pack_name)
1533{
1534 struct packed_git *p = add_packed_git(pack_name, strlen(pack_name), 1);
1535
1536 if (!p)
c2b97ecf 1537 die(_("Cannot open existing pack file '%s'"), pack_name);
e337a04d 1538 if (open_pack_index(p))
c2b97ecf 1539 die(_("Cannot open existing pack idx file for '%s'"), pack_name);
e337a04d
JH
1540
1541 /* Read the attributes from the existing idx file */
1542 opts->version = p->index_version;
1543
3c9fc074
JH
1544 if (opts->version == 2)
1545 read_v2_anomalous_offsets(p, opts);
1546
e337a04d
JH
1547 /*
1548 * Get rid of the idx file as we do not need it anymore.
1549 * NEEDSWORK: extract this bit from free_pack_by_name() in
1550 * sha1_file.c, perhaps? It shouldn't matter very much as we
1551 * know we haven't installed this pack (hence we never have
1552 * read anything from it).
1553 */
1554 close_pack_index(p);
1555 free(p);
1556}
1557
38a45561
JH
1558static void show_pack_info(int stat_only)
1559{
c6458e60 1560 int i, baseobjects = nr_objects - nr_ref_deltas - nr_ofs_deltas;
d1a0ed18
JH
1561 unsigned long *chain_histogram = NULL;
1562
1563 if (deepest_delta)
1564 chain_histogram = xcalloc(deepest_delta, sizeof(unsigned long));
1565
38a45561
JH
1566 for (i = 0; i < nr_objects; i++) {
1567 struct object_entry *obj = &objects[i];
1568
d1a0ed18 1569 if (is_delta_type(obj->type))
41730576 1570 chain_histogram[obj_stat[i].delta_depth - 1]++;
38a45561
JH
1571 if (stat_only)
1572 continue;
1573 printf("%s %-6s %lu %lu %"PRIuMAX,
1574 sha1_to_hex(obj->idx.sha1),
1575 typename(obj->real_type), obj->size,
1576 (unsigned long)(obj[1].idx.offset - obj->idx.offset),
1577 (uintmax_t)obj->idx.offset);
1578 if (is_delta_type(obj->type)) {
41730576
NTND
1579 struct object_entry *bobj = &objects[obj_stat[i].base_object_no];
1580 printf(" %u %s", obj_stat[i].delta_depth, sha1_to_hex(bobj->idx.sha1));
38a45561
JH
1581 }
1582 putchar('\n');
1583 }
d1a0ed18
JH
1584
1585 if (baseobjects)
c2b97ecf
NTND
1586 printf_ln(Q_("non delta: %d object",
1587 "non delta: %d objects",
1588 baseobjects),
1589 baseobjects);
d1a0ed18
JH
1590 for (i = 0; i < deepest_delta; i++) {
1591 if (!chain_histogram[i])
1592 continue;
c2b97ecf
NTND
1593 printf_ln(Q_("chain length = %d: %lu object",
1594 "chain length = %d: %lu objects",
1595 chain_histogram[i]),
1596 i + 1,
1597 chain_histogram[i]);
d1a0ed18 1598 }
38a45561
JH
1599}
1600
3bb72562 1601int cmd_index_pack(int argc, const char **argv, const char *prefix)
9cf6d335 1602{
3aba2fdd 1603 int i, fix_thin_pack = 0, verify = 0, stat_only = 0;
39539495 1604 const char *curr_index;
3bb72562 1605 const char *index_name = NULL, *pack_name = NULL;
b8077709 1606 const char *keep_name = NULL, *keep_msg = NULL;
592ce208
JK
1607 struct strbuf index_name_buf = STRBUF_INIT,
1608 keep_name_buf = STRBUF_INIT;
aa7e44bf 1609 struct pack_idx_entry **idx_objects;
ebcfb379 1610 struct pack_idx_option opts;
8522148f 1611 unsigned char pack_sha1[20];
c6807a40 1612 unsigned foreign_nr = 1; /* zero is a "good" value, assume bad */
9cf6d335 1613
99caeed0
JN
1614 if (argc == 2 && !strcmp(argv[1], "-h"))
1615 usage(index_pack_usage);
1616
afc711b8 1617 check_replace_refs = 0;
22410549 1618 fsck_options.walk = mark_link;
6e2a09d2 1619
ebcfb379
JH
1620 reset_pack_idx_option(&opts);
1621 git_config(git_index_pack_config, &opts);
3f8099fc 1622 if (prefix && chdir(prefix))
c2b97ecf 1623 die(_("Cannot come back to cwd"));
4d00bda2 1624
9cf6d335 1625 for (i = 1; i < argc; i++) {
3bb72562 1626 const char *arg = argv[i];
9cf6d335
SV
1627
1628 if (*arg == '-') {
e42797f5
NP
1629 if (!strcmp(arg, "--stdin")) {
1630 from_stdin = 1;
636171cb
NP
1631 } else if (!strcmp(arg, "--fix-thin")) {
1632 fix_thin_pack = 1;
0153be05
MK
1633 } else if (!strcmp(arg, "--strict")) {
1634 strict = 1;
c6807a40 1635 do_fsck_object = 1;
5d477a33
JS
1636 } else if (skip_prefix(arg, "--strict=", &arg)) {
1637 strict = 1;
1638 do_fsck_object = 1;
1639 fsck_set_msg_types(&fsck_options, arg);
c6807a40
NTND
1640 } else if (!strcmp(arg, "--check-self-contained-and-connected")) {
1641 strict = 1;
1642 check_self_contained_and_connected = 1;
e337a04d
JH
1643 } else if (!strcmp(arg, "--verify")) {
1644 verify = 1;
38a45561
JH
1645 } else if (!strcmp(arg, "--verify-stat")) {
1646 verify = 1;
3aba2fdd 1647 show_stat = 1;
38a45561
JH
1648 } else if (!strcmp(arg, "--verify-stat-only")) {
1649 verify = 1;
3aba2fdd 1650 show_stat = 1;
38a45561 1651 stat_only = 1;
b8077709
SP
1652 } else if (!strcmp(arg, "--keep")) {
1653 keep_msg = "";
59556548 1654 } else if (starts_with(arg, "--keep=")) {
b8077709 1655 keep_msg = arg + 7;
59556548 1656 } else if (starts_with(arg, "--threads=")) {
b8a2486f
NTND
1657 char *end;
1658 nr_threads = strtoul(arg+10, &end, 0);
1659 if (!arg[10] || *end || nr_threads < 0)
1660 usage(index_pack_usage);
1661#ifdef NO_PTHREADS
1662 if (nr_threads != 1)
f350df42
NTND
1663 warning(_("no threads support, "
1664 "ignoring %s"), arg);
b8a2486f
NTND
1665 nr_threads = 1;
1666#endif
59556548 1667 } else if (starts_with(arg, "--pack_header=")) {
bed006fb
NP
1668 struct pack_header *hdr;
1669 char *c;
1670
1671 hdr = (struct pack_header *)input_buffer;
1672 hdr->hdr_signature = htonl(PACK_SIGNATURE);
1673 hdr->hdr_version = htonl(strtoul(arg + 14, &c, 10));
1674 if (*c != ',')
c2b97ecf 1675 die(_("bad %s"), arg);
bed006fb
NP
1676 hdr->hdr_entries = htonl(strtoul(c + 1, &c, 10));
1677 if (*c)
c2b97ecf 1678 die(_("bad %s"), arg);
bed006fb 1679 input_len = sizeof(*hdr);
3c9af366
NP
1680 } else if (!strcmp(arg, "-v")) {
1681 verbose = 1;
e42797f5 1682 } else if (!strcmp(arg, "-o")) {
9cf6d335
SV
1683 if (index_name || (i+1) >= argc)
1684 usage(index_pack_usage);
1685 index_name = argv[++i];
59556548 1686 } else if (starts_with(arg, "--index-version=")) {
4ba7d711 1687 char *c;
ebcfb379
JH
1688 opts.version = strtoul(arg + 16, &c, 10);
1689 if (opts.version > 2)
c2b97ecf 1690 die(_("bad %s"), arg);
4ba7d711 1691 if (*c == ',')
ebcfb379
JH
1692 opts.off32_limit = strtoul(c+1, &c, 0);
1693 if (*c || opts.off32_limit & 0x80000000)
c2b97ecf 1694 die(_("bad %s"), arg);
9cf6d335
SV
1695 } else
1696 usage(index_pack_usage);
1697 continue;
1698 }
1699
1700 if (pack_name)
1701 usage(index_pack_usage);
1702 pack_name = arg;
1703 }
1704
e42797f5 1705 if (!pack_name && !from_stdin)
9cf6d335 1706 usage(index_pack_usage);
636171cb 1707 if (fix_thin_pack && !from_stdin)
c2b97ecf 1708 die(_("--fix-thin cannot be used without --stdin"));
e42797f5 1709 if (!index_name && pack_name) {
592ce208
JK
1710 size_t len;
1711 if (!strip_suffix(pack_name, ".pack", &len))
c2b97ecf 1712 die(_("packfile name '%s' does not end with '.pack'"),
9cf6d335 1713 pack_name);
592ce208
JK
1714 strbuf_add(&index_name_buf, pack_name, len);
1715 strbuf_addstr(&index_name_buf, ".idx");
1716 index_name = index_name_buf.buf;
9cf6d335 1717 }
b8077709 1718 if (keep_msg && !keep_name && pack_name) {
592ce208
JK
1719 size_t len;
1720 if (!strip_suffix(pack_name, ".pack", &len))
c2b97ecf 1721 die(_("packfile name '%s' does not end with '.pack'"),
b8077709 1722 pack_name);
592ce208
JK
1723 strbuf_add(&keep_name_buf, pack_name, len);
1724 strbuf_addstr(&keep_name_buf, ".idx");
1725 keep_name = keep_name_buf.buf;
b8077709 1726 }
e337a04d
JH
1727 if (verify) {
1728 if (!index_name)
c2b97ecf 1729 die(_("--verify with no packfile name given"));
e337a04d 1730 read_idx_option(&opts, index_name);
68be2fea 1731 opts.flags |= WRITE_IDX_VERIFY | WRITE_IDX_STRICT;
e337a04d 1732 }
68be2fea
JH
1733 if (strict)
1734 opts.flags |= WRITE_IDX_STRICT;
9cf6d335 1735
b8a2486f
NTND
1736#ifndef NO_PTHREADS
1737 if (!nr_threads) {
1738 nr_threads = online_cpus();
1739 /* An experiment showed that more threads does not mean faster */
1740 if (nr_threads > 3)
1741 nr_threads = 3;
1742 }
1743#endif
1744
e42797f5 1745 curr_pack = open_pack_file(pack_name);
9cf6d335 1746 parse_pack_header();
38a45561 1747 objects = xcalloc(nr_objects + 1, sizeof(struct object_entry));
41730576
NTND
1748 if (show_stat)
1749 obj_stat = xcalloc(nr_objects + 1, sizeof(struct object_stat));
c6458e60 1750 ofs_deltas = xcalloc(nr_objects, sizeof(struct ofs_delta_entry));
8522148f 1751 parse_pack_objects(pack_sha1);
5272f755
NTND
1752 resolve_deltas();
1753 conclude_pack(fix_thin_pack, curr_pack, pack_sha1);
c6458e60
NTND
1754 free(ofs_deltas);
1755 free(ref_deltas);
0153be05 1756 if (strict)
c6807a40 1757 foreign_nr = check_objects();
aa7e44bf 1758
3aba2fdd 1759 if (show_stat)
38a45561
JH
1760 show_pack_info(stat_only);
1761
b32fa95f 1762 ALLOC_ARRAY(idx_objects, nr_objects);
aa7e44bf
GB
1763 for (i = 0; i < nr_objects; i++)
1764 idx_objects[i] = &objects[i].idx;
ebcfb379 1765 curr_index = write_idx_file(index_name, idx_objects, nr_objects, &opts, pack_sha1);
aa7e44bf
GB
1766 free(idx_objects);
1767
e337a04d
JH
1768 if (!verify)
1769 final(pack_name, curr_pack,
1770 index_name, curr_index,
1771 keep_name, keep_msg,
1772 pack_sha1);
1773 else
1774 close(input_fd);
9cf6d335 1775 free(objects);
592ce208
JK
1776 strbuf_release(&index_name_buf);
1777 strbuf_release(&keep_name_buf);
c85228ed 1778 if (pack_name == NULL)
3bb72562 1779 free((void *) curr_pack);
c85228ed 1780 if (index_name == NULL)
3bb72562 1781 free((void *) curr_index);
9cf6d335 1782
c6807a40
NTND
1783 /*
1784 * Let the caller know this pack is not self contained
1785 */
1786 if (check_self_contained_and_connected && foreign_nr)
1787 return 1;
1788
9cf6d335
SV
1789 return 0;
1790}