13 #include "streaming.h"
14 #include "thread-utils.h"
16 #include "object-store.h"
17 #include "promisor-remote.h"
19 static const char index_pack_usage
[] =
20 "git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
23 struct pack_idx_entry idx
;
25 unsigned char hdr_size
;
27 signed char real_type
;
36 /* Initialized by make_base(). */
37 struct base_data
*base
;
38 struct object_entry
*obj
;
39 int ref_first
, ref_last
;
40 int ofs_first
, ofs_last
;
42 * Threads should increment retain_data if they are about to call
43 * patch_delta() using this struct's data as a base, and decrement this
44 * when they are done. While retain_data is nonzero, this struct's data
45 * will not be freed even if the delta base cache limit is exceeded.
49 * The number of direct children that have not been fully processed
50 * (entered work_head, entered done_head, left done_head). When this
51 * number reaches zero, this struct base_data can be freed.
53 int children_remaining
;
55 /* Not initialized by make_base(). */
56 struct list_head list
;
62 * Stack of struct base_data that have unprocessed children.
63 * threaded_second_pass() uses this as a source of work (the other being the
66 * Guarded by work_mutex.
68 static LIST_HEAD(work_head
);
71 * Stack of struct base_data that have children, all of whom have been
72 * processed or are being processed, and at least one child is being processed.
73 * These struct base_data must be kept around until the last child is
76 * Guarded by work_mutex.
78 static LIST_HEAD(done_head
);
81 * All threads share one delta base cache.
83 * base_cache_used is guarded by work_mutex, and base_cache_limit is read-only
86 static size_t base_cache_used
;
87 static size_t base_cache_limit
;
94 /* Remember to update object flag allocation in object.h */
95 #define FLAG_LINK (1u<<20)
96 #define FLAG_CHECKED (1u<<21)
98 struct ofs_delta_entry
{
103 struct ref_delta_entry
{
104 struct object_id oid
;
108 static struct object_entry
*objects
;
109 static struct object_stat
*obj_stat
;
110 static struct ofs_delta_entry
*ofs_deltas
;
111 static struct ref_delta_entry
*ref_deltas
;
112 static struct thread_local nothread_data
;
113 static int nr_objects
;
114 static int nr_ofs_deltas
;
115 static int nr_ref_deltas
;
116 static int ref_deltas_alloc
;
117 static int nr_resolved_deltas
;
118 static int nr_threads
;
120 static int from_stdin
;
122 static int do_fsck_object
;
123 static struct fsck_options fsck_options
= FSCK_OPTIONS_STRICT
;
125 static int show_resolving_progress
;
126 static int show_stat
;
127 static int check_self_contained_and_connected
;
129 static struct progress
*progress
;
131 /* We always read in 4kB chunks. */
132 static unsigned char input_buffer
[4096];
133 static unsigned int input_offset
, input_len
;
134 static off_t consumed_bytes
;
135 static off_t max_input_size
;
136 static unsigned deepest_delta
;
137 static git_hash_ctx input_ctx
;
138 static uint32_t input_crc32
;
139 static int input_fd
, output_fd
;
140 static const char *curr_pack
;
142 static struct thread_local
*thread_data
;
143 static int nr_dispatched
;
144 static int threads_active
;
146 static pthread_mutex_t read_mutex
;
147 #define read_lock() lock_mutex(&read_mutex)
148 #define read_unlock() unlock_mutex(&read_mutex)
150 static pthread_mutex_t counter_mutex
;
151 #define counter_lock() lock_mutex(&counter_mutex)
152 #define counter_unlock() unlock_mutex(&counter_mutex)
154 static pthread_mutex_t work_mutex
;
155 #define work_lock() lock_mutex(&work_mutex)
156 #define work_unlock() unlock_mutex(&work_mutex)
158 static pthread_mutex_t deepest_delta_mutex
;
159 #define deepest_delta_lock() lock_mutex(&deepest_delta_mutex)
160 #define deepest_delta_unlock() unlock_mutex(&deepest_delta_mutex)
162 static pthread_mutex_t type_cas_mutex
;
163 #define type_cas_lock() lock_mutex(&type_cas_mutex)
164 #define type_cas_unlock() unlock_mutex(&type_cas_mutex)
166 static pthread_key_t key
;
168 static inline void lock_mutex(pthread_mutex_t
*mutex
)
171 pthread_mutex_lock(mutex
);
174 static inline void unlock_mutex(pthread_mutex_t
*mutex
)
177 pthread_mutex_unlock(mutex
);
181 * Mutex and conditional variable can't be statically-initialized on Windows.
183 static void init_thread(void)
186 init_recursive_mutex(&read_mutex
);
187 pthread_mutex_init(&counter_mutex
, NULL
);
188 pthread_mutex_init(&work_mutex
, NULL
);
189 pthread_mutex_init(&type_cas_mutex
, NULL
);
191 pthread_mutex_init(&deepest_delta_mutex
, NULL
);
192 pthread_key_create(&key
, NULL
);
193 thread_data
= xcalloc(nr_threads
, sizeof(*thread_data
));
194 for (i
= 0; i
< nr_threads
; i
++) {
195 thread_data
[i
].pack_fd
= open(curr_pack
, O_RDONLY
);
196 if (thread_data
[i
].pack_fd
== -1)
197 die_errno(_("unable to open %s"), curr_pack
);
203 static void cleanup_thread(void)
209 pthread_mutex_destroy(&read_mutex
);
210 pthread_mutex_destroy(&counter_mutex
);
211 pthread_mutex_destroy(&work_mutex
);
212 pthread_mutex_destroy(&type_cas_mutex
);
214 pthread_mutex_destroy(&deepest_delta_mutex
);
215 for (i
= 0; i
< nr_threads
; i
++)
216 close(thread_data
[i
].pack_fd
);
217 pthread_key_delete(key
);
221 static int mark_link(struct object
*obj
, int type
, void *data
, struct fsck_options
*options
)
226 if (type
!= OBJ_ANY
&& obj
->type
!= type
)
227 die(_("object type mismatch at %s"), oid_to_hex(&obj
->oid
));
229 obj
->flags
|= FLAG_LINK
;
233 /* The content of each linked object must have been checked
234 or it must be already present in the object database */
235 static unsigned check_object(struct object
*obj
)
240 if (!(obj
->flags
& FLAG_LINK
))
243 if (!(obj
->flags
& FLAG_CHECKED
)) {
245 int type
= oid_object_info(the_repository
, &obj
->oid
, &size
);
247 die(_("did not receive expected object %s"),
248 oid_to_hex(&obj
->oid
));
249 if (type
!= obj
->type
)
250 die(_("object %s: expected type %s, found %s"),
251 oid_to_hex(&obj
->oid
),
252 type_name(obj
->type
), type_name(type
));
253 obj
->flags
|= FLAG_CHECKED
;
260 static unsigned check_objects(void)
262 unsigned i
, max
, foreign_nr
= 0;
264 max
= get_max_object_index();
267 progress
= start_delayed_progress(_("Checking objects"), max
);
269 for (i
= 0; i
< max
; i
++) {
270 foreign_nr
+= check_object(get_indexed_object(i
));
271 display_progress(progress
, i
+ 1);
274 stop_progress(&progress
);
279 /* Discard current buffer used content. */
280 static void flush(void)
284 write_or_die(output_fd
, input_buffer
, input_offset
);
285 the_hash_algo
->update_fn(&input_ctx
, input_buffer
, input_offset
);
286 memmove(input_buffer
, input_buffer
+ input_offset
, input_len
);
292 * Make sure at least "min" bytes are available in the buffer, and
293 * return the pointer to the buffer.
295 static void *fill(int min
)
297 if (min
<= input_len
)
298 return input_buffer
+ input_offset
;
299 if (min
> sizeof(input_buffer
))
300 die(Q_("cannot fill %d byte",
301 "cannot fill %d bytes",
306 ssize_t ret
= xread(input_fd
, input_buffer
+ input_len
,
307 sizeof(input_buffer
) - input_len
);
311 die_errno(_("read error on input"));
315 display_throughput(progress
, consumed_bytes
+ input_len
);
316 } while (input_len
< min
);
320 static void use(int bytes
)
322 if (bytes
> input_len
)
323 die(_("used more bytes than were available"));
324 input_crc32
= crc32(input_crc32
, input_buffer
+ input_offset
, bytes
);
326 input_offset
+= bytes
;
328 /* make sure off_t is sufficiently large not to wrap */
329 if (signed_add_overflows(consumed_bytes
, bytes
))
330 die(_("pack too large for current definition of off_t"));
331 consumed_bytes
+= bytes
;
332 if (max_input_size
&& consumed_bytes
> max_input_size
)
333 die(_("pack exceeds maximum allowed size"));
336 static const char *open_pack_file(const char *pack_name
)
341 struct strbuf tmp_file
= STRBUF_INIT
;
342 output_fd
= odb_mkstemp(&tmp_file
,
343 "pack/tmp_pack_XXXXXX");
344 pack_name
= strbuf_detach(&tmp_file
, NULL
);
346 output_fd
= open(pack_name
, O_CREAT
|O_EXCL
|O_RDWR
, 0600);
348 die_errno(_("unable to create '%s'"), pack_name
);
350 nothread_data
.pack_fd
= output_fd
;
352 input_fd
= open(pack_name
, O_RDONLY
);
354 die_errno(_("cannot open packfile '%s'"), pack_name
);
356 nothread_data
.pack_fd
= input_fd
;
358 the_hash_algo
->init_fn(&input_ctx
);
362 static void parse_pack_header(void)
364 struct pack_header
*hdr
= fill(sizeof(struct pack_header
));
366 /* Header consistency check */
367 if (hdr
->hdr_signature
!= htonl(PACK_SIGNATURE
))
368 die(_("pack signature mismatch"));
369 if (!pack_version_ok(hdr
->hdr_version
))
370 die(_("pack version %"PRIu32
" unsupported"),
371 ntohl(hdr
->hdr_version
));
373 nr_objects
= ntohl(hdr
->hdr_entries
);
374 use(sizeof(struct pack_header
));
377 static NORETURN
void bad_object(off_t offset
, const char *format
,
378 ...) __attribute__((format (printf
, 2, 3)));
380 static NORETURN
void bad_object(off_t offset
, const char *format
, ...)
385 va_start(params
, format
);
386 vsnprintf(buf
, sizeof(buf
), format
, params
);
388 die(_("pack has bad object at offset %"PRIuMAX
": %s"),
389 (uintmax_t)offset
, buf
);
392 static inline struct thread_local
*get_thread_data(void)
396 return pthread_getspecific(key
);
397 assert(!threads_active
&&
398 "This should only be reached when all threads are gone");
400 return ¬hread_data
;
403 static void set_thread_data(struct thread_local
*data
)
406 pthread_setspecific(key
, data
);
409 static void free_base_data(struct base_data
*c
)
412 FREE_AND_NULL(c
->data
);
413 base_cache_used
-= c
->size
;
417 static void prune_base_data(struct base_data
*retain
)
419 struct list_head
*pos
;
421 if (base_cache_used
<= base_cache_limit
)
424 list_for_each_prev(pos
, &done_head
) {
425 struct base_data
*b
= list_entry(pos
, struct base_data
, list
);
426 if (b
->retain_data
|| b
== retain
)
430 if (base_cache_used
<= base_cache_limit
)
435 list_for_each_prev(pos
, &work_head
) {
436 struct base_data
*b
= list_entry(pos
, struct base_data
, list
);
437 if (b
->retain_data
|| b
== retain
)
441 if (base_cache_used
<= base_cache_limit
)
447 static int is_delta_type(enum object_type type
)
449 return (type
== OBJ_REF_DELTA
|| type
== OBJ_OFS_DELTA
);
452 static void *unpack_entry_data(off_t offset
, unsigned long size
,
453 enum object_type type
, struct object_id
*oid
)
455 static char fixed_buf
[8192];
463 if (!is_delta_type(type
)) {
464 hdrlen
= xsnprintf(hdr
, sizeof(hdr
), "%s %"PRIuMAX
,
465 type_name(type
),(uintmax_t)size
) + 1;
466 the_hash_algo
->init_fn(&c
);
467 the_hash_algo
->update_fn(&c
, hdr
, hdrlen
);
470 if (type
== OBJ_BLOB
&& size
> big_file_threshold
)
473 buf
= xmallocz(size
);
475 memset(&stream
, 0, sizeof(stream
));
476 git_inflate_init(&stream
);
477 stream
.next_out
= buf
;
478 stream
.avail_out
= buf
== fixed_buf
? sizeof(fixed_buf
) : size
;
481 unsigned char *last_out
= stream
.next_out
;
482 stream
.next_in
= fill(1);
483 stream
.avail_in
= input_len
;
484 status
= git_inflate(&stream
, 0);
485 use(input_len
- stream
.avail_in
);
487 the_hash_algo
->update_fn(&c
, last_out
, stream
.next_out
- last_out
);
488 if (buf
== fixed_buf
) {
489 stream
.next_out
= buf
;
490 stream
.avail_out
= sizeof(fixed_buf
);
492 } while (status
== Z_OK
);
493 if (stream
.total_out
!= size
|| status
!= Z_STREAM_END
)
494 bad_object(offset
, _("inflate returned %d"), status
);
495 git_inflate_end(&stream
);
497 the_hash_algo
->final_fn(oid
->hash
, &c
);
498 return buf
== fixed_buf
? NULL
: buf
;
501 static void *unpack_raw_entry(struct object_entry
*obj
,
503 struct object_id
*ref_oid
,
504 struct object_id
*oid
)
507 unsigned long size
, c
;
512 obj
->idx
.offset
= consumed_bytes
;
513 input_crc32
= crc32(0, NULL
, 0);
518 obj
->type
= (c
>> 4) & 7;
525 size
+= (c
& 0x7f) << shift
;
532 hashcpy(ref_oid
->hash
, fill(the_hash_algo
->rawsz
));
533 use(the_hash_algo
->rawsz
);
539 base_offset
= c
& 127;
542 if (!base_offset
|| MSB(base_offset
, 7))
543 bad_object(obj
->idx
.offset
, _("offset value overflow for delta base object"));
547 base_offset
= (base_offset
<< 7) + (c
& 127);
549 *ofs_offset
= obj
->idx
.offset
- base_offset
;
550 if (*ofs_offset
<= 0 || *ofs_offset
>= obj
->idx
.offset
)
551 bad_object(obj
->idx
.offset
, _("delta base offset is out of bound"));
559 bad_object(obj
->idx
.offset
, _("unknown object type %d"), obj
->type
);
561 obj
->hdr_size
= consumed_bytes
- obj
->idx
.offset
;
563 data
= unpack_entry_data(obj
->idx
.offset
, obj
->size
, obj
->type
, oid
);
564 obj
->idx
.crc32
= input_crc32
;
568 static void *unpack_data(struct object_entry
*obj
,
569 int (*consume
)(const unsigned char *, unsigned long, void *),
572 off_t from
= obj
[0].idx
.offset
+ obj
[0].hdr_size
;
573 off_t len
= obj
[1].idx
.offset
- from
;
574 unsigned char *data
, *inbuf
;
578 data
= xmallocz(consume
? 64*1024 : obj
->size
);
579 inbuf
= xmalloc((len
< 64*1024) ? (int)len
: 64*1024);
581 memset(&stream
, 0, sizeof(stream
));
582 git_inflate_init(&stream
);
583 stream
.next_out
= data
;
584 stream
.avail_out
= consume
? 64*1024 : obj
->size
;
587 ssize_t n
= (len
< 64*1024) ? (ssize_t
)len
: 64*1024;
588 n
= xpread(get_thread_data()->pack_fd
, inbuf
, n
, from
);
590 die_errno(_("cannot pread pack file"));
592 die(Q_("premature end of pack file, %"PRIuMAX
" byte missing",
593 "premature end of pack file, %"PRIuMAX
" bytes missing",
598 stream
.next_in
= inbuf
;
601 status
= git_inflate(&stream
, 0);
604 status
= git_inflate(&stream
, 0);
605 if (consume(data
, stream
.next_out
- data
, cb_data
)) {
610 stream
.next_out
= data
;
611 stream
.avail_out
= 64*1024;
612 } while (status
== Z_OK
&& stream
.avail_in
);
614 } while (len
&& status
== Z_OK
&& !stream
.avail_in
);
616 /* This has been inflated OK when first encountered, so... */
617 if (status
!= Z_STREAM_END
|| stream
.total_out
!= obj
->size
)
618 die(_("serious inflate inconsistency"));
620 git_inflate_end(&stream
);
628 static void *get_data_from_pack(struct object_entry
*obj
)
630 return unpack_data(obj
, NULL
, NULL
);
633 static int compare_ofs_delta_bases(off_t offset1
, off_t offset2
,
634 enum object_type type1
,
635 enum object_type type2
)
637 int cmp
= type1
- type2
;
640 return offset1
< offset2
? -1 :
641 offset1
> offset2
? 1 :
645 static int find_ofs_delta(const off_t offset
)
647 int first
= 0, last
= nr_ofs_deltas
;
649 while (first
< last
) {
650 int next
= first
+ (last
- first
) / 2;
651 struct ofs_delta_entry
*delta
= &ofs_deltas
[next
];
654 cmp
= compare_ofs_delta_bases(offset
, delta
->offset
,
656 objects
[delta
->obj_no
].type
);
668 static void find_ofs_delta_children(off_t offset
,
669 int *first_index
, int *last_index
)
671 int first
= find_ofs_delta(offset
);
673 int end
= nr_ofs_deltas
- 1;
680 while (first
> 0 && ofs_deltas
[first
- 1].offset
== offset
)
682 while (last
< end
&& ofs_deltas
[last
+ 1].offset
== offset
)
684 *first_index
= first
;
688 static int compare_ref_delta_bases(const struct object_id
*oid1
,
689 const struct object_id
*oid2
,
690 enum object_type type1
,
691 enum object_type type2
)
693 int cmp
= type1
- type2
;
696 return oidcmp(oid1
, oid2
);
699 static int find_ref_delta(const struct object_id
*oid
)
701 int first
= 0, last
= nr_ref_deltas
;
703 while (first
< last
) {
704 int next
= first
+ (last
- first
) / 2;
705 struct ref_delta_entry
*delta
= &ref_deltas
[next
];
708 cmp
= compare_ref_delta_bases(oid
, &delta
->oid
,
710 objects
[delta
->obj_no
].type
);
722 static void find_ref_delta_children(const struct object_id
*oid
,
723 int *first_index
, int *last_index
)
725 int first
= find_ref_delta(oid
);
727 int end
= nr_ref_deltas
- 1;
734 while (first
> 0 && oideq(&ref_deltas
[first
- 1].oid
, oid
))
736 while (last
< end
&& oideq(&ref_deltas
[last
+ 1].oid
, oid
))
738 *first_index
= first
;
742 struct compare_data
{
743 struct object_entry
*entry
;
744 struct git_istream
*st
;
746 unsigned long buf_size
;
749 static int compare_objects(const unsigned char *buf
, unsigned long size
,
752 struct compare_data
*data
= cb_data
;
754 if (data
->buf_size
< size
) {
756 data
->buf
= xmalloc(size
);
757 data
->buf_size
= size
;
761 ssize_t len
= read_istream(data
->st
, data
->buf
, size
);
763 die(_("SHA1 COLLISION FOUND WITH %s !"),
764 oid_to_hex(&data
->entry
->idx
.oid
));
766 die(_("unable to read %s"),
767 oid_to_hex(&data
->entry
->idx
.oid
));
768 if (memcmp(buf
, data
->buf
, len
))
769 die(_("SHA1 COLLISION FOUND WITH %s !"),
770 oid_to_hex(&data
->entry
->idx
.oid
));
777 static int check_collison(struct object_entry
*entry
)
779 struct compare_data data
;
780 enum object_type type
;
783 if (entry
->size
<= big_file_threshold
|| entry
->type
!= OBJ_BLOB
)
786 memset(&data
, 0, sizeof(data
));
788 data
.st
= open_istream(the_repository
, &entry
->idx
.oid
, &type
, &size
,
792 if (size
!= entry
->size
|| type
!= entry
->type
)
793 die(_("SHA1 COLLISION FOUND WITH %s !"),
794 oid_to_hex(&entry
->idx
.oid
));
795 unpack_data(entry
, compare_objects
, &data
);
796 close_istream(data
.st
);
801 static void sha1_object(const void *data
, struct object_entry
*obj_entry
,
802 unsigned long size
, enum object_type type
,
803 const struct object_id
*oid
)
805 void *new_data
= NULL
;
806 int collision_test_needed
= 0;
808 assert(data
|| obj_entry
);
810 if (startup_info
->have_repository
) {
812 collision_test_needed
=
813 has_object_file_with_flags(oid
, OBJECT_INFO_QUICK
);
817 if (collision_test_needed
&& !data
) {
819 if (!check_collison(obj_entry
))
820 collision_test_needed
= 0;
823 if (collision_test_needed
) {
825 enum object_type has_type
;
826 unsigned long has_size
;
828 has_type
= oid_object_info(the_repository
, oid
, &has_size
);
830 die(_("cannot read existing object info %s"), oid_to_hex(oid
));
831 if (has_type
!= type
|| has_size
!= size
)
832 die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid
));
833 has_data
= read_object_file(oid
, &has_type
, &has_size
);
836 data
= new_data
= get_data_from_pack(obj_entry
);
838 die(_("cannot read existing object %s"), oid_to_hex(oid
));
839 if (size
!= has_size
|| type
!= has_type
||
840 memcmp(data
, has_data
, size
) != 0)
841 die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid
));
845 if (strict
|| do_fsck_object
) {
847 if (type
== OBJ_BLOB
) {
848 struct blob
*blob
= lookup_blob(the_repository
, oid
);
850 blob
->object
.flags
|= FLAG_CHECKED
;
852 die(_("invalid blob object %s"), oid_to_hex(oid
));
853 if (do_fsck_object
&&
854 fsck_object(&blob
->object
, (void *)data
, size
, &fsck_options
))
855 die(_("fsck error in packed object"));
859 void *buf
= (void *) data
;
861 assert(data
&& "data can only be NULL for large _blobs_");
864 * we do not need to free the memory here, as the
865 * buf is deleted by the caller.
867 obj
= parse_object_buffer(the_repository
, oid
, type
,
871 die(_("invalid %s"), type_name(type
));
872 if (do_fsck_object
&&
873 fsck_object(obj
, buf
, size
, &fsck_options
))
874 die(_("fsck error in packed object"));
875 if (strict
&& fsck_walk(obj
, NULL
, &fsck_options
))
876 die(_("Not all child objects of %s are reachable"), oid_to_hex(&obj
->oid
));
878 if (obj
->type
== OBJ_TREE
) {
879 struct tree
*item
= (struct tree
*) obj
;
883 if (obj
->type
== OBJ_COMMIT
) {
884 struct commit
*commit
= (struct commit
*) obj
;
885 if (detach_commit_buffer(commit
, NULL
) != data
)
886 BUG("parse_object_buffer transmogrified our buffer");
888 obj
->flags
|= FLAG_CHECKED
;
897 * Walk from current node up
898 * to top parent if necessary to deflate the node. In normal
899 * situation, its parent node would be already deflated, so it just
900 * needs to apply delta.
902 * In the worst case scenario, parent node is no longer deflated because
903 * we're running out of delta_base_cache_limit; we need to re-deflate
904 * parents, possibly up to the top base.
906 * All deflated objects here are subject to be freed if we exceed
907 * delta_base_cache_limit, just like in find_unresolved_deltas(), we
908 * just need to make sure the last node is not freed.
910 static void *get_base_data(struct base_data
*c
)
913 struct object_entry
*obj
= c
->obj
;
914 struct base_data
**delta
= NULL
;
915 int delta_nr
= 0, delta_alloc
= 0;
917 while (is_delta_type(c
->obj
->type
) && !c
->data
) {
918 ALLOC_GROW(delta
, delta_nr
+ 1, delta_alloc
);
919 delta
[delta_nr
++] = c
;
923 c
->data
= get_data_from_pack(obj
);
925 base_cache_used
+= c
->size
;
928 for (; delta_nr
> 0; delta_nr
--) {
930 c
= delta
[delta_nr
- 1];
932 base
= get_base_data(c
->base
);
933 raw
= get_data_from_pack(obj
);
934 c
->data
= patch_delta(
940 bad_object(obj
->idx
.offset
, _("failed to apply delta"));
941 base_cache_used
+= c
->size
;
949 static struct base_data
*make_base(struct object_entry
*obj
,
950 struct base_data
*parent
)
952 struct base_data
*base
= xcalloc(1, sizeof(struct base_data
));
955 find_ref_delta_children(&obj
->idx
.oid
,
956 &base
->ref_first
, &base
->ref_last
);
957 find_ofs_delta_children(obj
->idx
.offset
,
958 &base
->ofs_first
, &base
->ofs_last
);
959 base
->children_remaining
= base
->ref_last
- base
->ref_first
+
960 base
->ofs_last
- base
->ofs_first
+ 2;
964 static struct base_data
*resolve_delta(struct object_entry
*delta_obj
,
965 struct base_data
*base
)
967 void *delta_data
, *result_data
;
968 struct base_data
*result
;
969 unsigned long result_size
;
972 int i
= delta_obj
- objects
;
973 int j
= base
->obj
- objects
;
974 obj_stat
[i
].delta_depth
= obj_stat
[j
].delta_depth
+ 1;
975 deepest_delta_lock();
976 if (deepest_delta
< obj_stat
[i
].delta_depth
)
977 deepest_delta
= obj_stat
[i
].delta_depth
;
978 deepest_delta_unlock();
979 obj_stat
[i
].base_object_no
= j
;
981 delta_data
= get_data_from_pack(delta_obj
);
983 result_data
= patch_delta(base
->data
, base
->size
,
984 delta_data
, delta_obj
->size
, &result_size
);
987 bad_object(delta_obj
->idx
.offset
, _("failed to apply delta"));
988 hash_object_file(the_hash_algo
, result_data
, result_size
,
989 type_name(delta_obj
->real_type
), &delta_obj
->idx
.oid
);
990 sha1_object(result_data
, NULL
, result_size
, delta_obj
->real_type
,
991 &delta_obj
->idx
.oid
);
993 result
= make_base(delta_obj
, base
);
994 result
->data
= result_data
;
995 result
->size
= result_size
;
998 nr_resolved_deltas
++;
1004 static int compare_ofs_delta_entry(const void *a
, const void *b
)
1006 const struct ofs_delta_entry
*delta_a
= a
;
1007 const struct ofs_delta_entry
*delta_b
= b
;
1009 return delta_a
->offset
< delta_b
->offset
? -1 :
1010 delta_a
->offset
> delta_b
->offset
? 1 :
1014 static int compare_ref_delta_entry(const void *a
, const void *b
)
1016 const struct ref_delta_entry
*delta_a
= a
;
1017 const struct ref_delta_entry
*delta_b
= b
;
1019 return oidcmp(&delta_a
->oid
, &delta_b
->oid
);
1022 static void *threaded_second_pass(void *data
)
1025 set_thread_data(data
);
1027 struct base_data
*parent
= NULL
;
1028 struct object_entry
*child_obj
;
1029 struct base_data
*child
;
1032 if (list_empty(&work_head
)) {
1034 * Take an object from the object array.
1036 while (nr_dispatched
< nr_objects
&&
1037 is_delta_type(objects
[nr_dispatched
].type
))
1039 if (nr_dispatched
>= nr_objects
) {
1043 child_obj
= &objects
[nr_dispatched
++];
1046 * Peek at the top of the stack, and take a child from
1049 parent
= list_first_entry(&work_head
, struct base_data
,
1052 if (parent
->ref_first
<= parent
->ref_last
) {
1053 int offset
= ref_deltas
[parent
->ref_first
++].obj_no
;
1054 child_obj
= objects
+ offset
;
1055 if (child_obj
->real_type
!= OBJ_REF_DELTA
)
1056 die("REF_DELTA at offset %"PRIuMAX
" already resolved (duplicate base %s?)",
1057 (uintmax_t) child_obj
->idx
.offset
,
1058 oid_to_hex(&parent
->obj
->idx
.oid
));
1059 child_obj
->real_type
= parent
->obj
->real_type
;
1061 child_obj
= objects
+
1062 ofs_deltas
[parent
->ofs_first
++].obj_no
;
1063 assert(child_obj
->real_type
== OBJ_OFS_DELTA
);
1064 child_obj
->real_type
= parent
->obj
->real_type
;
1067 if (parent
->ref_first
> parent
->ref_last
&&
1068 parent
->ofs_first
> parent
->ofs_last
) {
1070 * This parent has run out of children, so move
1073 list_del(&parent
->list
);
1074 list_add(&parent
->list
, &done_head
);
1078 * Ensure that the parent has data, since we will need
1081 * NEEDSWORK: If parent data needs to be reloaded, this
1082 * prolongs the time that the current thread spends in
1083 * the mutex. A mitigating factor is that parent data
1084 * needs to be reloaded only if the delta base cache
1085 * limit is exceeded, so in the typical case, this does
1088 get_base_data(parent
);
1089 parent
->retain_data
++;
1094 child
= resolve_delta(child_obj
, parent
);
1095 if (!child
->children_remaining
)
1096 FREE_AND_NULL(child
->data
);
1098 child
= make_base(child_obj
, NULL
);
1099 if (child
->children_remaining
) {
1101 * Since this child has its own delta children,
1102 * we will need this data in the future.
1103 * Inflate now so that future iterations will
1104 * have access to this object's data while
1105 * outside the work mutex.
1107 child
->data
= get_data_from_pack(child_obj
);
1108 child
->size
= child_obj
->size
;
1114 parent
->retain_data
--;
1117 * This child has its own children, so add it to
1120 list_add(&child
->list
, &work_head
);
1121 base_cache_used
+= child
->size
;
1122 prune_base_data(NULL
);
1125 * This child does not have its own children. It may be
1126 * the last descendant of its ancestors; free those
1129 struct base_data
*p
= parent
;
1132 struct base_data
*next_p
;
1134 p
->children_remaining
--;
1135 if (p
->children_remaining
)
1153 * - find locations of all objects;
1154 * - calculate SHA1 of all non-delta objects;
1155 * - remember base (SHA1 or offset) for all deltas.
1157 static void parse_pack_objects(unsigned char *hash
)
1159 int i
, nr_delays
= 0;
1160 struct ofs_delta_entry
*ofs_delta
= ofs_deltas
;
1161 struct object_id ref_delta_oid
;
1165 progress
= start_progress(
1166 from_stdin
? _("Receiving objects") : _("Indexing objects"),
1168 for (i
= 0; i
< nr_objects
; i
++) {
1169 struct object_entry
*obj
= &objects
[i
];
1170 void *data
= unpack_raw_entry(obj
, &ofs_delta
->offset
,
1173 obj
->real_type
= obj
->type
;
1174 if (obj
->type
== OBJ_OFS_DELTA
) {
1176 ofs_delta
->obj_no
= i
;
1178 } else if (obj
->type
== OBJ_REF_DELTA
) {
1179 ALLOC_GROW(ref_deltas
, nr_ref_deltas
+ 1, ref_deltas_alloc
);
1180 oidcpy(&ref_deltas
[nr_ref_deltas
].oid
, &ref_delta_oid
);
1181 ref_deltas
[nr_ref_deltas
].obj_no
= i
;
1184 /* large blobs, check later */
1185 obj
->real_type
= OBJ_BAD
;
1188 sha1_object(data
, NULL
, obj
->size
, obj
->type
,
1191 display_progress(progress
, i
+1);
1193 objects
[i
].idx
.offset
= consumed_bytes
;
1194 stop_progress(&progress
);
1196 /* Check pack integrity */
1198 the_hash_algo
->final_fn(hash
, &input_ctx
);
1199 if (!hasheq(fill(the_hash_algo
->rawsz
), hash
))
1200 die(_("pack is corrupted (SHA1 mismatch)"));
1201 use(the_hash_algo
->rawsz
);
1203 /* If input_fd is a file, we should have reached its end now. */
1204 if (fstat(input_fd
, &st
))
1205 die_errno(_("cannot fstat packfile"));
1206 if (S_ISREG(st
.st_mode
) &&
1207 lseek(input_fd
, 0, SEEK_CUR
) - input_len
!= st
.st_size
)
1208 die(_("pack has junk at the end"));
1210 for (i
= 0; i
< nr_objects
; i
++) {
1211 struct object_entry
*obj
= &objects
[i
];
1212 if (obj
->real_type
!= OBJ_BAD
)
1214 obj
->real_type
= obj
->type
;
1215 sha1_object(NULL
, obj
, obj
->size
, obj
->type
,
1220 die(_("confusion beyond insanity in parse_pack_objects()"));
1225 * - for all non-delta objects, look if it is used as a base for
1227 * - if used as a base, uncompress the object and apply all deltas,
1228 * recursively checking if the resulting object is used as a base
1229 * for some more deltas.
1231 static void resolve_deltas(void)
1235 if (!nr_ofs_deltas
&& !nr_ref_deltas
)
1238 /* Sort deltas by base SHA1/offset for fast searching */
1239 QSORT(ofs_deltas
, nr_ofs_deltas
, compare_ofs_delta_entry
);
1240 QSORT(ref_deltas
, nr_ref_deltas
, compare_ref_delta_entry
);
1242 if (verbose
|| show_resolving_progress
)
1243 progress
= start_progress(_("Resolving deltas"),
1244 nr_ref_deltas
+ nr_ofs_deltas
);
1247 base_cache_limit
= delta_base_cache_limit
* nr_threads
;
1248 if (nr_threads
> 1 || getenv("GIT_FORCE_THREADS")) {
1250 for (i
= 0; i
< nr_threads
; i
++) {
1251 int ret
= pthread_create(&thread_data
[i
].thread
, NULL
,
1252 threaded_second_pass
, thread_data
+ i
);
1254 die(_("unable to create thread: %s"),
1257 for (i
= 0; i
< nr_threads
; i
++)
1258 pthread_join(thread_data
[i
].thread
, NULL
);
1262 threaded_second_pass(¬hread_data
);
1267 * - append objects to convert thin pack to full pack if required
1268 * - write the final pack hash
1270 static void fix_unresolved_deltas(struct hashfile
*f
);
1271 static void conclude_pack(int fix_thin_pack
, const char *curr_pack
, unsigned char *pack_hash
)
1273 if (nr_ref_deltas
+ nr_ofs_deltas
== nr_resolved_deltas
) {
1274 stop_progress(&progress
);
1275 /* Flush remaining pack final hash. */
1280 if (fix_thin_pack
) {
1282 unsigned char read_hash
[GIT_MAX_RAWSZ
], tail_hash
[GIT_MAX_RAWSZ
];
1283 struct strbuf msg
= STRBUF_INIT
;
1284 int nr_unresolved
= nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
;
1285 int nr_objects_initial
= nr_objects
;
1286 if (nr_unresolved
<= 0)
1287 die(_("confusion beyond insanity"));
1288 REALLOC_ARRAY(objects
, nr_objects
+ nr_unresolved
+ 1);
1289 memset(objects
+ nr_objects
+ 1, 0,
1290 nr_unresolved
* sizeof(*objects
));
1291 f
= hashfd(output_fd
, curr_pack
);
1292 fix_unresolved_deltas(f
);
1293 strbuf_addf(&msg
, Q_("completed with %d local object",
1294 "completed with %d local objects",
1295 nr_objects
- nr_objects_initial
),
1296 nr_objects
- nr_objects_initial
);
1297 stop_progress_msg(&progress
, msg
.buf
);
1298 strbuf_release(&msg
);
1299 finalize_hashfile(f
, tail_hash
, 0);
1300 hashcpy(read_hash
, pack_hash
);
1301 fixup_pack_header_footer(output_fd
, pack_hash
,
1302 curr_pack
, nr_objects
,
1303 read_hash
, consumed_bytes
-the_hash_algo
->rawsz
);
1304 if (!hasheq(read_hash
, tail_hash
))
1305 die(_("Unexpected tail checksum for %s "
1306 "(disk corruption?)"), curr_pack
);
1308 if (nr_ofs_deltas
+ nr_ref_deltas
!= nr_resolved_deltas
)
1309 die(Q_("pack has %d unresolved delta",
1310 "pack has %d unresolved deltas",
1311 nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
),
1312 nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
);
1315 static int write_compressed(struct hashfile
*f
, void *in
, unsigned int size
)
1319 unsigned char outbuf
[4096];
1321 git_deflate_init(&stream
, zlib_compression_level
);
1322 stream
.next_in
= in
;
1323 stream
.avail_in
= size
;
1326 stream
.next_out
= outbuf
;
1327 stream
.avail_out
= sizeof(outbuf
);
1328 status
= git_deflate(&stream
, Z_FINISH
);
1329 hashwrite(f
, outbuf
, sizeof(outbuf
) - stream
.avail_out
);
1330 } while (status
== Z_OK
);
1332 if (status
!= Z_STREAM_END
)
1333 die(_("unable to deflate appended object (%d)"), status
);
1334 size
= stream
.total_out
;
1335 git_deflate_end(&stream
);
1339 static struct object_entry
*append_obj_to_pack(struct hashfile
*f
,
1340 const unsigned char *sha1
, void *buf
,
1341 unsigned long size
, enum object_type type
)
1343 struct object_entry
*obj
= &objects
[nr_objects
++];
1344 unsigned char header
[10];
1345 unsigned long s
= size
;
1347 unsigned char c
= (type
<< 4) | (s
& 15);
1350 header
[n
++] = c
| 0x80;
1356 hashwrite(f
, header
, n
);
1358 obj
[0].hdr_size
= n
;
1360 obj
[0].real_type
= type
;
1361 obj
[1].idx
.offset
= obj
[0].idx
.offset
+ n
;
1362 obj
[1].idx
.offset
+= write_compressed(f
, buf
, size
);
1363 obj
[0].idx
.crc32
= crc32_end(f
);
1365 hashcpy(obj
->idx
.oid
.hash
, sha1
);
1369 static int delta_pos_compare(const void *_a
, const void *_b
)
1371 struct ref_delta_entry
*a
= *(struct ref_delta_entry
**)_a
;
1372 struct ref_delta_entry
*b
= *(struct ref_delta_entry
**)_b
;
1373 return a
->obj_no
- b
->obj_no
;
1376 static void fix_unresolved_deltas(struct hashfile
*f
)
1378 struct ref_delta_entry
**sorted_by_pos
;
1382 * Since many unresolved deltas may well be themselves base objects
1383 * for more unresolved deltas, we really want to include the
1384 * smallest number of base objects that would cover as much delta
1385 * as possible by picking the
1386 * trunc deltas first, allowing for other deltas to resolve without
1387 * additional base objects. Since most base objects are to be found
1388 * before deltas depending on them, a good heuristic is to start
1389 * resolving deltas in the same order as their position in the pack.
1391 ALLOC_ARRAY(sorted_by_pos
, nr_ref_deltas
);
1392 for (i
= 0; i
< nr_ref_deltas
; i
++)
1393 sorted_by_pos
[i
] = &ref_deltas
[i
];
1394 QSORT(sorted_by_pos
, nr_ref_deltas
, delta_pos_compare
);
1396 if (has_promisor_remote()) {
1398 * Prefetch the delta bases.
1400 struct oid_array to_fetch
= OID_ARRAY_INIT
;
1401 for (i
= 0; i
< nr_ref_deltas
; i
++) {
1402 struct ref_delta_entry
*d
= sorted_by_pos
[i
];
1403 if (!oid_object_info_extended(the_repository
, &d
->oid
,
1405 OBJECT_INFO_FOR_PREFETCH
))
1407 oid_array_append(&to_fetch
, &d
->oid
);
1409 promisor_remote_get_direct(the_repository
,
1410 to_fetch
.oid
, to_fetch
.nr
);
1411 oid_array_clear(&to_fetch
);
1414 for (i
= 0; i
< nr_ref_deltas
; i
++) {
1415 struct ref_delta_entry
*d
= sorted_by_pos
[i
];
1416 enum object_type type
;
1420 if (objects
[d
->obj_no
].real_type
!= OBJ_REF_DELTA
)
1422 data
= read_object_file(&d
->oid
, &type
, &size
);
1426 if (check_object_signature(the_repository
, &d
->oid
,
1429 die(_("local object %s is corrupt"), oid_to_hex(&d
->oid
));
1432 * Add this as an object to the objects array and call
1433 * threaded_second_pass() (which will pick up the added
1436 append_obj_to_pack(f
, d
->oid
.hash
, data
, size
, type
);
1437 threaded_second_pass(NULL
);
1439 display_progress(progress
, nr_resolved_deltas
);
1441 free(sorted_by_pos
);
1444 static const char *derive_filename(const char *pack_name
, const char *suffix
,
1448 if (!strip_suffix(pack_name
, ".pack", &len
))
1449 die(_("packfile name '%s' does not end with '.pack'"),
1451 strbuf_add(buf
, pack_name
, len
);
1452 strbuf_addch(buf
, '.');
1453 strbuf_addstr(buf
, suffix
);
1457 static void write_special_file(const char *suffix
, const char *msg
,
1458 const char *pack_name
, const unsigned char *hash
,
1459 const char **report
)
1461 struct strbuf name_buf
= STRBUF_INIT
;
1462 const char *filename
;
1464 int msg_len
= strlen(msg
);
1467 filename
= derive_filename(pack_name
, suffix
, &name_buf
);
1469 filename
= odb_pack_name(&name_buf
, hash
, suffix
);
1471 fd
= odb_pack_keep(filename
);
1473 if (errno
!= EEXIST
)
1474 die_errno(_("cannot write %s file '%s'"),
1478 write_or_die(fd
, msg
, msg_len
);
1479 write_or_die(fd
, "\n", 1);
1482 die_errno(_("cannot close written %s file '%s'"),
1487 strbuf_release(&name_buf
);
1490 static void final(const char *final_pack_name
, const char *curr_pack_name
,
1491 const char *final_index_name
, const char *curr_index_name
,
1492 const char *keep_msg
, const char *promisor_msg
,
1493 unsigned char *hash
)
1495 const char *report
= "pack";
1496 struct strbuf pack_name
= STRBUF_INIT
;
1497 struct strbuf index_name
= STRBUF_INIT
;
1503 fsync_or_die(output_fd
, curr_pack_name
);
1504 err
= close(output_fd
);
1506 die_errno(_("error while closing pack file"));
1510 write_special_file("keep", keep_msg
, final_pack_name
, hash
,
1513 write_special_file("promisor", promisor_msg
, final_pack_name
,
1516 if (final_pack_name
!= curr_pack_name
) {
1517 if (!final_pack_name
)
1518 final_pack_name
= odb_pack_name(&pack_name
, hash
, "pack");
1519 if (finalize_object_file(curr_pack_name
, final_pack_name
))
1520 die(_("cannot store pack file"));
1521 } else if (from_stdin
)
1522 chmod(final_pack_name
, 0444);
1524 if (final_index_name
!= curr_index_name
) {
1525 if (!final_index_name
)
1526 final_index_name
= odb_pack_name(&index_name
, hash
, "idx");
1527 if (finalize_object_file(curr_index_name
, final_index_name
))
1528 die(_("cannot store index file"));
1530 chmod(final_index_name
, 0444);
1532 if (do_fsck_object
) {
1533 struct packed_git
*p
;
1534 p
= add_packed_git(final_index_name
, strlen(final_index_name
), 0);
1536 install_packed_git(the_repository
, p
);
1540 printf("%s\n", hash_to_hex(hash
));
1542 struct strbuf buf
= STRBUF_INIT
;
1544 strbuf_addf(&buf
, "%s\t%s\n", report
, hash_to_hex(hash
));
1545 write_or_die(1, buf
.buf
, buf
.len
);
1546 strbuf_release(&buf
);
1549 * Let's just mimic git-unpack-objects here and write
1550 * the last part of the input buffer to stdout.
1553 err
= xwrite(1, input_buffer
+ input_offset
, input_len
);
1557 input_offset
+= err
;
1561 strbuf_release(&index_name
);
1562 strbuf_release(&pack_name
);
1565 static int git_index_pack_config(const char *k
, const char *v
, void *cb
)
1567 struct pack_idx_option
*opts
= cb
;
1569 if (!strcmp(k
, "pack.indexversion")) {
1570 opts
->version
= git_config_int(k
, v
);
1571 if (opts
->version
> 2)
1572 die(_("bad pack.indexversion=%"PRIu32
), opts
->version
);
1575 if (!strcmp(k
, "pack.threads")) {
1576 nr_threads
= git_config_int(k
, v
);
1578 die(_("invalid number of threads specified (%d)"),
1580 if (!HAVE_THREADS
&& nr_threads
!= 1) {
1581 warning(_("no threads support, ignoring %s"), k
);
1586 return git_default_config(k
, v
, cb
);
1589 static int cmp_uint32(const void *a_
, const void *b_
)
1591 uint32_t a
= *((uint32_t *)a_
);
1592 uint32_t b
= *((uint32_t *)b_
);
1594 return (a
< b
) ? -1 : (a
!= b
);
1597 static void read_v2_anomalous_offsets(struct packed_git
*p
,
1598 struct pack_idx_option
*opts
)
1600 const uint32_t *idx1
, *idx2
;
1603 /* The address of the 4-byte offset table */
1604 idx1
= (((const uint32_t *)((const uint8_t *)p
->index_data
+ p
->crc_offset
))
1605 + p
->num_objects
/* CRC32 table */
1608 /* The address of the 8-byte offset table */
1609 idx2
= idx1
+ p
->num_objects
;
1611 for (i
= 0; i
< p
->num_objects
; i
++) {
1612 uint32_t off
= ntohl(idx1
[i
]);
1613 if (!(off
& 0x80000000))
1615 off
= off
& 0x7fffffff;
1616 check_pack_index_ptr(p
, &idx2
[off
* 2]);
1620 * The real offset is ntohl(idx2[off * 2]) in high 4
1621 * octets, and ntohl(idx2[off * 2 + 1]) in low 4
1622 * octets. But idx2[off * 2] is Zero!!!
1624 ALLOC_GROW(opts
->anomaly
, opts
->anomaly_nr
+ 1, opts
->anomaly_alloc
);
1625 opts
->anomaly
[opts
->anomaly_nr
++] = ntohl(idx2
[off
* 2 + 1]);
1628 QSORT(opts
->anomaly
, opts
->anomaly_nr
, cmp_uint32
);
1631 static void read_idx_option(struct pack_idx_option
*opts
, const char *pack_name
)
1633 struct packed_git
*p
= add_packed_git(pack_name
, strlen(pack_name
), 1);
1636 die(_("Cannot open existing pack file '%s'"), pack_name
);
1637 if (open_pack_index(p
))
1638 die(_("Cannot open existing pack idx file for '%s'"), pack_name
);
1640 /* Read the attributes from the existing idx file */
1641 opts
->version
= p
->index_version
;
1643 if (opts
->version
== 2)
1644 read_v2_anomalous_offsets(p
, opts
);
1647 * Get rid of the idx file as we do not need it anymore.
1648 * NEEDSWORK: extract this bit from free_pack_by_name() in
1649 * sha1-file.c, perhaps? It shouldn't matter very much as we
1650 * know we haven't installed this pack (hence we never have
1651 * read anything from it).
1653 close_pack_index(p
);
1657 static void show_pack_info(int stat_only
)
1659 int i
, baseobjects
= nr_objects
- nr_ref_deltas
- nr_ofs_deltas
;
1660 unsigned long *chain_histogram
= NULL
;
1663 chain_histogram
= xcalloc(deepest_delta
, sizeof(unsigned long));
1665 for (i
= 0; i
< nr_objects
; i
++) {
1666 struct object_entry
*obj
= &objects
[i
];
1668 if (is_delta_type(obj
->type
))
1669 chain_histogram
[obj_stat
[i
].delta_depth
- 1]++;
1672 printf("%s %-6s %"PRIuMAX
" %"PRIuMAX
" %"PRIuMAX
,
1673 oid_to_hex(&obj
->idx
.oid
),
1674 type_name(obj
->real_type
), (uintmax_t)obj
->size
,
1675 (uintmax_t)(obj
[1].idx
.offset
- obj
->idx
.offset
),
1676 (uintmax_t)obj
->idx
.offset
);
1677 if (is_delta_type(obj
->type
)) {
1678 struct object_entry
*bobj
= &objects
[obj_stat
[i
].base_object_no
];
1679 printf(" %u %s", obj_stat
[i
].delta_depth
,
1680 oid_to_hex(&bobj
->idx
.oid
));
1686 printf_ln(Q_("non delta: %d object",
1687 "non delta: %d objects",
1690 for (i
= 0; i
< deepest_delta
; i
++) {
1691 if (!chain_histogram
[i
])
1693 printf_ln(Q_("chain length = %d: %lu object",
1694 "chain length = %d: %lu objects",
1695 chain_histogram
[i
]),
1697 chain_histogram
[i
]);
1701 int cmd_index_pack(int argc
, const char **argv
, const char *prefix
)
1703 int i
, fix_thin_pack
= 0, verify
= 0, stat_only
= 0;
1704 const char *curr_index
;
1705 const char *index_name
= NULL
, *pack_name
= NULL
;
1706 const char *keep_msg
= NULL
;
1707 const char *promisor_msg
= NULL
;
1708 struct strbuf index_name_buf
= STRBUF_INIT
;
1709 struct pack_idx_entry
**idx_objects
;
1710 struct pack_idx_option opts
;
1711 unsigned char pack_hash
[GIT_MAX_RAWSZ
];
1712 unsigned foreign_nr
= 1; /* zero is a "good" value, assume bad */
1713 int report_end_of_input
= 0;
1717 * index-pack never needs to fetch missing objects except when
1718 * REF_DELTA bases are missing (which are explicitly handled). It only
1719 * accesses the repo to do hash collision checks and to check which
1720 * REF_DELTA bases need to be fetched.
1722 fetch_if_missing
= 0;
1724 if (argc
== 2 && !strcmp(argv
[1], "-h"))
1725 usage(index_pack_usage
);
1727 read_replace_refs
= 0;
1728 fsck_options
.walk
= mark_link
;
1730 reset_pack_idx_option(&opts
);
1731 git_config(git_index_pack_config
, &opts
);
1732 if (prefix
&& chdir(prefix
))
1733 die(_("Cannot come back to cwd"));
1735 for (i
= 1; i
< argc
; i
++) {
1736 const char *arg
= argv
[i
];
1739 if (!strcmp(arg
, "--stdin")) {
1741 } else if (!strcmp(arg
, "--fix-thin")) {
1743 } else if (skip_to_optional_arg(arg
, "--strict", &arg
)) {
1746 fsck_set_msg_types(&fsck_options
, arg
);
1747 } else if (!strcmp(arg
, "--check-self-contained-and-connected")) {
1749 check_self_contained_and_connected
= 1;
1750 } else if (!strcmp(arg
, "--fsck-objects")) {
1752 } else if (!strcmp(arg
, "--verify")) {
1754 } else if (!strcmp(arg
, "--verify-stat")) {
1757 } else if (!strcmp(arg
, "--verify-stat-only")) {
1761 } else if (skip_to_optional_arg(arg
, "--keep", &keep_msg
)) {
1762 ; /* nothing to do */
1763 } else if (skip_to_optional_arg(arg
, "--promisor", &promisor_msg
)) {
1764 ; /* already parsed */
1765 } else if (starts_with(arg
, "--threads=")) {
1767 nr_threads
= strtoul(arg
+10, &end
, 0);
1768 if (!arg
[10] || *end
|| nr_threads
< 0)
1769 usage(index_pack_usage
);
1770 if (!HAVE_THREADS
&& nr_threads
!= 1) {
1771 warning(_("no threads support, ignoring %s"), arg
);
1774 } else if (starts_with(arg
, "--pack_header=")) {
1775 struct pack_header
*hdr
;
1778 hdr
= (struct pack_header
*)input_buffer
;
1779 hdr
->hdr_signature
= htonl(PACK_SIGNATURE
);
1780 hdr
->hdr_version
= htonl(strtoul(arg
+ 14, &c
, 10));
1782 die(_("bad %s"), arg
);
1783 hdr
->hdr_entries
= htonl(strtoul(c
+ 1, &c
, 10));
1785 die(_("bad %s"), arg
);
1786 input_len
= sizeof(*hdr
);
1787 } else if (!strcmp(arg
, "-v")) {
1789 } else if (!strcmp(arg
, "--show-resolving-progress")) {
1790 show_resolving_progress
= 1;
1791 } else if (!strcmp(arg
, "--report-end-of-input")) {
1792 report_end_of_input
= 1;
1793 } else if (!strcmp(arg
, "-o")) {
1794 if (index_name
|| (i
+1) >= argc
)
1795 usage(index_pack_usage
);
1796 index_name
= argv
[++i
];
1797 } else if (starts_with(arg
, "--index-version=")) {
1799 opts
.version
= strtoul(arg
+ 16, &c
, 10);
1800 if (opts
.version
> 2)
1801 die(_("bad %s"), arg
);
1803 opts
.off32_limit
= strtoul(c
+1, &c
, 0);
1804 if (*c
|| opts
.off32_limit
& 0x80000000)
1805 die(_("bad %s"), arg
);
1806 } else if (skip_prefix(arg
, "--max-input-size=", &arg
)) {
1807 max_input_size
= strtoumax(arg
, NULL
, 10);
1808 } else if (skip_prefix(arg
, "--object-format=", &arg
)) {
1809 hash_algo
= hash_algo_by_name(arg
);
1810 if (hash_algo
== GIT_HASH_UNKNOWN
)
1811 die(_("unknown hash algorithm '%s'"), arg
);
1812 repo_set_hash_algo(the_repository
, hash_algo
);
1814 usage(index_pack_usage
);
1819 usage(index_pack_usage
);
1823 if (!pack_name
&& !from_stdin
)
1824 usage(index_pack_usage
);
1825 if (fix_thin_pack
&& !from_stdin
)
1826 die(_("--fix-thin cannot be used without --stdin"));
1827 if (from_stdin
&& !startup_info
->have_repository
)
1828 die(_("--stdin requires a git repository"));
1829 if (from_stdin
&& hash_algo
)
1830 die(_("--object-format cannot be used with --stdin"));
1831 if (!index_name
&& pack_name
)
1832 index_name
= derive_filename(pack_name
, "idx", &index_name_buf
);
1836 die(_("--verify with no packfile name given"));
1837 read_idx_option(&opts
, index_name
);
1838 opts
.flags
|= WRITE_IDX_VERIFY
| WRITE_IDX_STRICT
;
1841 opts
.flags
|= WRITE_IDX_STRICT
;
1843 if (HAVE_THREADS
&& !nr_threads
) {
1844 nr_threads
= online_cpus();
1845 /* An experiment showed that more threads does not mean faster */
1850 curr_pack
= open_pack_file(pack_name
);
1851 parse_pack_header();
1852 objects
= xcalloc(st_add(nr_objects
, 1), sizeof(struct object_entry
));
1854 obj_stat
= xcalloc(st_add(nr_objects
, 1), sizeof(struct object_stat
));
1855 ofs_deltas
= xcalloc(nr_objects
, sizeof(struct ofs_delta_entry
));
1856 parse_pack_objects(pack_hash
);
1857 if (report_end_of_input
)
1858 write_in_full(2, "\0", 1);
1860 conclude_pack(fix_thin_pack
, curr_pack
, pack_hash
);
1864 foreign_nr
= check_objects();
1867 show_pack_info(stat_only
);
1869 ALLOC_ARRAY(idx_objects
, nr_objects
);
1870 for (i
= 0; i
< nr_objects
; i
++)
1871 idx_objects
[i
] = &objects
[i
].idx
;
1872 curr_index
= write_idx_file(index_name
, idx_objects
, nr_objects
, &opts
, pack_hash
);
1876 final(pack_name
, curr_pack
,
1877 index_name
, curr_index
,
1878 keep_msg
, promisor_msg
,
1883 if (do_fsck_object
&& fsck_finish(&fsck_options
))
1884 die(_("fsck error in pack objects"));
1887 strbuf_release(&index_name_buf
);
1888 if (pack_name
== NULL
)
1889 free((void *) curr_pack
);
1890 if (index_name
== NULL
)
1891 free((void *) curr_index
);
1894 * Let the caller know this pack is not self contained
1896 if (check_self_contained_and_connected
&& foreign_nr
)