13 #include "streaming.h"
14 #include "thread-utils.h"
16 #include "object-store.h"
18 static const char index_pack_usage
[] =
19 "git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
22 struct pack_idx_entry idx
;
24 unsigned char hdr_size
;
26 signed char real_type
;
35 struct base_data
*base
;
36 struct base_data
*child
;
37 struct object_entry
*obj
;
40 int ref_first
, ref_last
;
41 int ofs_first
, ofs_last
;
48 struct base_data
*base_cache
;
49 size_t base_cache_used
;
53 /* Remember to update object flag allocation in object.h */
54 #define FLAG_LINK (1u<<20)
55 #define FLAG_CHECKED (1u<<21)
57 struct ofs_delta_entry
{
62 struct ref_delta_entry
{
67 static struct object_entry
*objects
;
68 static struct object_stat
*obj_stat
;
69 static struct ofs_delta_entry
*ofs_deltas
;
70 static struct ref_delta_entry
*ref_deltas
;
71 static struct thread_local nothread_data
;
72 static int nr_objects
;
73 static int nr_ofs_deltas
;
74 static int nr_ref_deltas
;
75 static int ref_deltas_alloc
;
76 static int nr_resolved_deltas
;
77 static int nr_threads
;
79 static int from_stdin
;
81 static int do_fsck_object
;
82 static struct fsck_options fsck_options
= FSCK_OPTIONS_STRICT
;
84 static int show_resolving_progress
;
86 static int check_self_contained_and_connected
;
88 static struct progress
*progress
;
90 /* We always read in 4kB chunks. */
91 static unsigned char input_buffer
[4096];
92 static unsigned int input_offset
, input_len
;
93 static off_t consumed_bytes
;
94 static off_t max_input_size
;
95 static unsigned deepest_delta
;
96 static git_hash_ctx input_ctx
;
97 static uint32_t input_crc32
;
98 static int input_fd
, output_fd
;
99 static const char *curr_pack
;
103 static struct thread_local
*thread_data
;
104 static int nr_dispatched
;
105 static int threads_active
;
107 static pthread_mutex_t read_mutex
;
108 #define read_lock() lock_mutex(&read_mutex)
109 #define read_unlock() unlock_mutex(&read_mutex)
111 static pthread_mutex_t counter_mutex
;
112 #define counter_lock() lock_mutex(&counter_mutex)
113 #define counter_unlock() unlock_mutex(&counter_mutex)
115 static pthread_mutex_t work_mutex
;
116 #define work_lock() lock_mutex(&work_mutex)
117 #define work_unlock() unlock_mutex(&work_mutex)
119 static pthread_mutex_t deepest_delta_mutex
;
120 #define deepest_delta_lock() lock_mutex(&deepest_delta_mutex)
121 #define deepest_delta_unlock() unlock_mutex(&deepest_delta_mutex)
123 static pthread_mutex_t type_cas_mutex
;
124 #define type_cas_lock() lock_mutex(&type_cas_mutex)
125 #define type_cas_unlock() unlock_mutex(&type_cas_mutex)
127 static pthread_key_t key
;
129 static inline void lock_mutex(pthread_mutex_t
*mutex
)
132 pthread_mutex_lock(mutex
);
135 static inline void unlock_mutex(pthread_mutex_t
*mutex
)
138 pthread_mutex_unlock(mutex
);
142 * Mutex and conditional variable can't be statically-initialized on Windows.
144 static void init_thread(void)
147 init_recursive_mutex(&read_mutex
);
148 pthread_mutex_init(&counter_mutex
, NULL
);
149 pthread_mutex_init(&work_mutex
, NULL
);
150 pthread_mutex_init(&type_cas_mutex
, NULL
);
152 pthread_mutex_init(&deepest_delta_mutex
, NULL
);
153 pthread_key_create(&key
, NULL
);
154 thread_data
= xcalloc(nr_threads
, sizeof(*thread_data
));
155 for (i
= 0; i
< nr_threads
; i
++) {
156 thread_data
[i
].pack_fd
= open(curr_pack
, O_RDONLY
);
157 if (thread_data
[i
].pack_fd
== -1)
158 die_errno(_("unable to open %s"), curr_pack
);
164 static void cleanup_thread(void)
170 pthread_mutex_destroy(&read_mutex
);
171 pthread_mutex_destroy(&counter_mutex
);
172 pthread_mutex_destroy(&work_mutex
);
173 pthread_mutex_destroy(&type_cas_mutex
);
175 pthread_mutex_destroy(&deepest_delta_mutex
);
176 for (i
= 0; i
< nr_threads
; i
++)
177 close(thread_data
[i
].pack_fd
);
178 pthread_key_delete(key
);
185 #define read_unlock()
187 #define counter_lock()
188 #define counter_unlock()
191 #define work_unlock()
193 #define deepest_delta_lock()
194 #define deepest_delta_unlock()
196 #define type_cas_lock()
197 #define type_cas_unlock()
202 static int mark_link(struct object
*obj
, int type
, void *data
, struct fsck_options
*options
)
207 if (type
!= OBJ_ANY
&& obj
->type
!= type
)
208 die(_("object type mismatch at %s"), oid_to_hex(&obj
->oid
));
210 obj
->flags
|= FLAG_LINK
;
214 /* The content of each linked object must have been checked
215 or it must be already present in the object database */
216 static unsigned check_object(struct object
*obj
)
221 if (!(obj
->flags
& FLAG_LINK
))
224 if (!(obj
->flags
& FLAG_CHECKED
)) {
226 int type
= oid_object_info(&obj
->oid
, &size
);
228 die(_("did not receive expected object %s"),
229 oid_to_hex(&obj
->oid
));
230 if (type
!= obj
->type
)
231 die(_("object %s: expected type %s, found %s"),
232 oid_to_hex(&obj
->oid
),
233 type_name(obj
->type
), type_name(type
));
234 obj
->flags
|= FLAG_CHECKED
;
241 static unsigned check_objects(void)
243 unsigned i
, max
, foreign_nr
= 0;
245 max
= get_max_object_index();
246 for (i
= 0; i
< max
; i
++)
247 foreign_nr
+= check_object(get_indexed_object(i
));
252 /* Discard current buffer used content. */
253 static void flush(void)
257 write_or_die(output_fd
, input_buffer
, input_offset
);
258 the_hash_algo
->update_fn(&input_ctx
, input_buffer
, input_offset
);
259 memmove(input_buffer
, input_buffer
+ input_offset
, input_len
);
265 * Make sure at least "min" bytes are available in the buffer, and
266 * return the pointer to the buffer.
268 static void *fill(int min
)
270 if (min
<= input_len
)
271 return input_buffer
+ input_offset
;
272 if (min
> sizeof(input_buffer
))
273 die(Q_("cannot fill %d byte",
274 "cannot fill %d bytes",
279 ssize_t ret
= xread(input_fd
, input_buffer
+ input_len
,
280 sizeof(input_buffer
) - input_len
);
284 die_errno(_("read error on input"));
288 display_throughput(progress
, consumed_bytes
+ input_len
);
289 } while (input_len
< min
);
293 static void use(int bytes
)
295 if (bytes
> input_len
)
296 die(_("used more bytes than were available"));
297 input_crc32
= crc32(input_crc32
, input_buffer
+ input_offset
, bytes
);
299 input_offset
+= bytes
;
301 /* make sure off_t is sufficiently large not to wrap */
302 if (signed_add_overflows(consumed_bytes
, bytes
))
303 die(_("pack too large for current definition of off_t"));
304 consumed_bytes
+= bytes
;
305 if (max_input_size
&& consumed_bytes
> max_input_size
)
306 die(_("pack exceeds maximum allowed size"));
309 static const char *open_pack_file(const char *pack_name
)
314 struct strbuf tmp_file
= STRBUF_INIT
;
315 output_fd
= odb_mkstemp(&tmp_file
,
316 "pack/tmp_pack_XXXXXX");
317 pack_name
= strbuf_detach(&tmp_file
, NULL
);
319 output_fd
= open(pack_name
, O_CREAT
|O_EXCL
|O_RDWR
, 0600);
321 die_errno(_("unable to create '%s'"), pack_name
);
323 nothread_data
.pack_fd
= output_fd
;
325 input_fd
= open(pack_name
, O_RDONLY
);
327 die_errno(_("cannot open packfile '%s'"), pack_name
);
329 nothread_data
.pack_fd
= input_fd
;
331 the_hash_algo
->init_fn(&input_ctx
);
335 static void parse_pack_header(void)
337 struct pack_header
*hdr
= fill(sizeof(struct pack_header
));
339 /* Header consistency check */
340 if (hdr
->hdr_signature
!= htonl(PACK_SIGNATURE
))
341 die(_("pack signature mismatch"));
342 if (!pack_version_ok(hdr
->hdr_version
))
343 die(_("pack version %"PRIu32
" unsupported"),
344 ntohl(hdr
->hdr_version
));
346 nr_objects
= ntohl(hdr
->hdr_entries
);
347 use(sizeof(struct pack_header
));
350 static NORETURN
void bad_object(off_t offset
, const char *format
,
351 ...) __attribute__((format (printf
, 2, 3)));
353 static NORETURN
void bad_object(off_t offset
, const char *format
, ...)
358 va_start(params
, format
);
359 vsnprintf(buf
, sizeof(buf
), format
, params
);
361 die(_("pack has bad object at offset %"PRIuMAX
": %s"),
362 (uintmax_t)offset
, buf
);
365 static inline struct thread_local
*get_thread_data(void)
369 return pthread_getspecific(key
);
370 assert(!threads_active
&&
371 "This should only be reached when all threads are gone");
373 return ¬hread_data
;
377 static void set_thread_data(struct thread_local
*data
)
380 pthread_setspecific(key
, data
);
384 static struct base_data
*alloc_base_data(void)
386 struct base_data
*base
= xcalloc(1, sizeof(struct base_data
));
392 static void free_base_data(struct base_data
*c
)
395 FREE_AND_NULL(c
->data
);
396 get_thread_data()->base_cache_used
-= c
->size
;
400 static void prune_base_data(struct base_data
*retain
)
403 struct thread_local
*data
= get_thread_data();
404 for (b
= data
->base_cache
;
405 data
->base_cache_used
> delta_base_cache_limit
&& b
;
407 if (b
->data
&& b
!= retain
)
412 static void link_base_data(struct base_data
*base
, struct base_data
*c
)
417 get_thread_data()->base_cache
= c
;
422 get_thread_data()->base_cache_used
+= c
->size
;
426 static void unlink_base_data(struct base_data
*c
)
428 struct base_data
*base
= c
->base
;
432 get_thread_data()->base_cache
= NULL
;
436 static int is_delta_type(enum object_type type
)
438 return (type
== OBJ_REF_DELTA
|| type
== OBJ_OFS_DELTA
);
441 static void *unpack_entry_data(off_t offset
, unsigned long size
,
442 enum object_type type
, struct object_id
*oid
)
444 static char fixed_buf
[8192];
452 if (!is_delta_type(type
)) {
453 hdrlen
= xsnprintf(hdr
, sizeof(hdr
), "%s %lu", type_name(type
), size
) + 1;
454 the_hash_algo
->init_fn(&c
);
455 the_hash_algo
->update_fn(&c
, hdr
, hdrlen
);
458 if (type
== OBJ_BLOB
&& size
> big_file_threshold
)
461 buf
= xmallocz(size
);
463 memset(&stream
, 0, sizeof(stream
));
464 git_inflate_init(&stream
);
465 stream
.next_out
= buf
;
466 stream
.avail_out
= buf
== fixed_buf
? sizeof(fixed_buf
) : size
;
469 unsigned char *last_out
= stream
.next_out
;
470 stream
.next_in
= fill(1);
471 stream
.avail_in
= input_len
;
472 status
= git_inflate(&stream
, 0);
473 use(input_len
- stream
.avail_in
);
475 the_hash_algo
->update_fn(&c
, last_out
, stream
.next_out
- last_out
);
476 if (buf
== fixed_buf
) {
477 stream
.next_out
= buf
;
478 stream
.avail_out
= sizeof(fixed_buf
);
480 } while (status
== Z_OK
);
481 if (stream
.total_out
!= size
|| status
!= Z_STREAM_END
)
482 bad_object(offset
, _("inflate returned %d"), status
);
483 git_inflate_end(&stream
);
485 the_hash_algo
->final_fn(oid
->hash
, &c
);
486 return buf
== fixed_buf
? NULL
: buf
;
489 static void *unpack_raw_entry(struct object_entry
*obj
,
491 struct object_id
*ref_oid
,
492 struct object_id
*oid
)
495 unsigned long size
, c
;
500 obj
->idx
.offset
= consumed_bytes
;
501 input_crc32
= crc32(0, NULL
, 0);
506 obj
->type
= (c
>> 4) & 7;
513 size
+= (c
& 0x7f) << shift
;
520 hashcpy(ref_oid
->hash
, fill(the_hash_algo
->rawsz
));
521 use(the_hash_algo
->rawsz
);
527 base_offset
= c
& 127;
530 if (!base_offset
|| MSB(base_offset
, 7))
531 bad_object(obj
->idx
.offset
, _("offset value overflow for delta base object"));
535 base_offset
= (base_offset
<< 7) + (c
& 127);
537 *ofs_offset
= obj
->idx
.offset
- base_offset
;
538 if (*ofs_offset
<= 0 || *ofs_offset
>= obj
->idx
.offset
)
539 bad_object(obj
->idx
.offset
, _("delta base offset is out of bound"));
547 bad_object(obj
->idx
.offset
, _("unknown object type %d"), obj
->type
);
549 obj
->hdr_size
= consumed_bytes
- obj
->idx
.offset
;
551 data
= unpack_entry_data(obj
->idx
.offset
, obj
->size
, obj
->type
, oid
);
552 obj
->idx
.crc32
= input_crc32
;
556 static void *unpack_data(struct object_entry
*obj
,
557 int (*consume
)(const unsigned char *, unsigned long, void *),
560 off_t from
= obj
[0].idx
.offset
+ obj
[0].hdr_size
;
561 off_t len
= obj
[1].idx
.offset
- from
;
562 unsigned char *data
, *inbuf
;
566 data
= xmallocz(consume
? 64*1024 : obj
->size
);
567 inbuf
= xmalloc((len
< 64*1024) ? (int)len
: 64*1024);
569 memset(&stream
, 0, sizeof(stream
));
570 git_inflate_init(&stream
);
571 stream
.next_out
= data
;
572 stream
.avail_out
= consume
? 64*1024 : obj
->size
;
575 ssize_t n
= (len
< 64*1024) ? (ssize_t
)len
: 64*1024;
576 n
= xpread(get_thread_data()->pack_fd
, inbuf
, n
, from
);
578 die_errno(_("cannot pread pack file"));
580 die(Q_("premature end of pack file, %"PRIuMAX
" byte missing",
581 "premature end of pack file, %"PRIuMAX
" bytes missing",
586 stream
.next_in
= inbuf
;
589 status
= git_inflate(&stream
, 0);
592 status
= git_inflate(&stream
, 0);
593 if (consume(data
, stream
.next_out
- data
, cb_data
)) {
598 stream
.next_out
= data
;
599 stream
.avail_out
= 64*1024;
600 } while (status
== Z_OK
&& stream
.avail_in
);
602 } while (len
&& status
== Z_OK
&& !stream
.avail_in
);
604 /* This has been inflated OK when first encountered, so... */
605 if (status
!= Z_STREAM_END
|| stream
.total_out
!= obj
->size
)
606 die(_("serious inflate inconsistency"));
608 git_inflate_end(&stream
);
616 static void *get_data_from_pack(struct object_entry
*obj
)
618 return unpack_data(obj
, NULL
, NULL
);
621 static int compare_ofs_delta_bases(off_t offset1
, off_t offset2
,
622 enum object_type type1
,
623 enum object_type type2
)
625 int cmp
= type1
- type2
;
628 return offset1
< offset2
? -1 :
629 offset1
> offset2
? 1 :
633 static int find_ofs_delta(const off_t offset
, enum object_type type
)
635 int first
= 0, last
= nr_ofs_deltas
;
637 while (first
< last
) {
638 int next
= first
+ (last
- first
) / 2;
639 struct ofs_delta_entry
*delta
= &ofs_deltas
[next
];
642 cmp
= compare_ofs_delta_bases(offset
, delta
->offset
,
643 type
, objects
[delta
->obj_no
].type
);
655 static void find_ofs_delta_children(off_t offset
,
656 int *first_index
, int *last_index
,
657 enum object_type type
)
659 int first
= find_ofs_delta(offset
, type
);
661 int end
= nr_ofs_deltas
- 1;
668 while (first
> 0 && ofs_deltas
[first
- 1].offset
== offset
)
670 while (last
< end
&& ofs_deltas
[last
+ 1].offset
== offset
)
672 *first_index
= first
;
676 static int compare_ref_delta_bases(const struct object_id
*oid1
,
677 const struct object_id
*oid2
,
678 enum object_type type1
,
679 enum object_type type2
)
681 int cmp
= type1
- type2
;
684 return oidcmp(oid1
, oid2
);
687 static int find_ref_delta(const struct object_id
*oid
, enum object_type type
)
689 int first
= 0, last
= nr_ref_deltas
;
691 while (first
< last
) {
692 int next
= first
+ (last
- first
) / 2;
693 struct ref_delta_entry
*delta
= &ref_deltas
[next
];
696 cmp
= compare_ref_delta_bases(oid
, &delta
->oid
,
697 type
, objects
[delta
->obj_no
].type
);
709 static void find_ref_delta_children(const struct object_id
*oid
,
710 int *first_index
, int *last_index
,
711 enum object_type type
)
713 int first
= find_ref_delta(oid
, type
);
715 int end
= nr_ref_deltas
- 1;
722 while (first
> 0 && !oidcmp(&ref_deltas
[first
- 1].oid
, oid
))
724 while (last
< end
&& !oidcmp(&ref_deltas
[last
+ 1].oid
, oid
))
726 *first_index
= first
;
730 struct compare_data
{
731 struct object_entry
*entry
;
732 struct git_istream
*st
;
734 unsigned long buf_size
;
737 static int compare_objects(const unsigned char *buf
, unsigned long size
,
740 struct compare_data
*data
= cb_data
;
742 if (data
->buf_size
< size
) {
744 data
->buf
= xmalloc(size
);
745 data
->buf_size
= size
;
749 ssize_t len
= read_istream(data
->st
, data
->buf
, size
);
751 die(_("SHA1 COLLISION FOUND WITH %s !"),
752 oid_to_hex(&data
->entry
->idx
.oid
));
754 die(_("unable to read %s"),
755 oid_to_hex(&data
->entry
->idx
.oid
));
756 if (memcmp(buf
, data
->buf
, len
))
757 die(_("SHA1 COLLISION FOUND WITH %s !"),
758 oid_to_hex(&data
->entry
->idx
.oid
));
765 static int check_collison(struct object_entry
*entry
)
767 struct compare_data data
;
768 enum object_type type
;
771 if (entry
->size
<= big_file_threshold
|| entry
->type
!= OBJ_BLOB
)
774 memset(&data
, 0, sizeof(data
));
776 data
.st
= open_istream(&entry
->idx
.oid
, &type
, &size
, NULL
);
779 if (size
!= entry
->size
|| type
!= entry
->type
)
780 die(_("SHA1 COLLISION FOUND WITH %s !"),
781 oid_to_hex(&entry
->idx
.oid
));
782 unpack_data(entry
, compare_objects
, &data
);
783 close_istream(data
.st
);
788 static void sha1_object(const void *data
, struct object_entry
*obj_entry
,
789 unsigned long size
, enum object_type type
,
790 const struct object_id
*oid
)
792 void *new_data
= NULL
;
793 int collision_test_needed
= 0;
795 assert(data
|| obj_entry
);
797 if (startup_info
->have_repository
) {
799 collision_test_needed
=
800 has_sha1_file_with_flags(oid
->hash
, OBJECT_INFO_QUICK
);
804 if (collision_test_needed
&& !data
) {
806 if (!check_collison(obj_entry
))
807 collision_test_needed
= 0;
810 if (collision_test_needed
) {
812 enum object_type has_type
;
813 unsigned long has_size
;
815 has_type
= oid_object_info(oid
, &has_size
);
817 die(_("cannot read existing object info %s"), oid_to_hex(oid
));
818 if (has_type
!= type
|| has_size
!= size
)
819 die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid
));
820 has_data
= read_object_file(oid
, &has_type
, &has_size
);
823 data
= new_data
= get_data_from_pack(obj_entry
);
825 die(_("cannot read existing object %s"), oid_to_hex(oid
));
826 if (size
!= has_size
|| type
!= has_type
||
827 memcmp(data
, has_data
, size
) != 0)
828 die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid
));
832 if (strict
|| do_fsck_object
) {
834 if (type
== OBJ_BLOB
) {
835 struct blob
*blob
= lookup_blob(oid
);
837 blob
->object
.flags
|= FLAG_CHECKED
;
839 die(_("invalid blob object %s"), oid_to_hex(oid
));
843 void *buf
= (void *) data
;
845 assert(data
&& "data can only be NULL for large _blobs_");
848 * we do not need to free the memory here, as the
849 * buf is deleted by the caller.
851 obj
= parse_object_buffer(oid
, type
, size
, buf
,
854 die(_("invalid %s"), type_name(type
));
855 if (do_fsck_object
&&
856 fsck_object(obj
, buf
, size
, &fsck_options
))
857 die(_("Error in object"));
858 if (strict
&& fsck_walk(obj
, NULL
, &fsck_options
))
859 die(_("Not all child objects of %s are reachable"), oid_to_hex(&obj
->oid
));
861 if (obj
->type
== OBJ_TREE
) {
862 struct tree
*item
= (struct tree
*) obj
;
866 if (obj
->type
== OBJ_COMMIT
) {
867 struct commit
*commit
= (struct commit
*) obj
;
868 if (detach_commit_buffer(commit
, NULL
) != data
)
869 die("BUG: parse_object_buffer transmogrified our buffer");
871 obj
->flags
|= FLAG_CHECKED
;
880 * This function is part of find_unresolved_deltas(). There are two
881 * walkers going in the opposite ways.
883 * The first one in find_unresolved_deltas() traverses down from
884 * parent node to children, deflating nodes along the way. However,
885 * memory for deflated nodes is limited by delta_base_cache_limit, so
886 * at some point parent node's deflated content may be freed.
888 * The second walker is this function, which goes from current node up
889 * to top parent if necessary to deflate the node. In normal
890 * situation, its parent node would be already deflated, so it just
891 * needs to apply delta.
893 * In the worst case scenario, parent node is no longer deflated because
894 * we're running out of delta_base_cache_limit; we need to re-deflate
895 * parents, possibly up to the top base.
897 * All deflated objects here are subject to be freed if we exceed
898 * delta_base_cache_limit, just like in find_unresolved_deltas(), we
899 * just need to make sure the last node is not freed.
901 static void *get_base_data(struct base_data
*c
)
904 struct object_entry
*obj
= c
->obj
;
905 struct base_data
**delta
= NULL
;
906 int delta_nr
= 0, delta_alloc
= 0;
908 while (is_delta_type(c
->obj
->type
) && !c
->data
) {
909 ALLOC_GROW(delta
, delta_nr
+ 1, delta_alloc
);
910 delta
[delta_nr
++] = c
;
914 c
->data
= get_data_from_pack(obj
);
916 get_thread_data()->base_cache_used
+= c
->size
;
919 for (; delta_nr
> 0; delta_nr
--) {
921 c
= delta
[delta_nr
- 1];
923 base
= get_base_data(c
->base
);
924 raw
= get_data_from_pack(obj
);
925 c
->data
= patch_delta(
931 bad_object(obj
->idx
.offset
, _("failed to apply delta"));
932 get_thread_data()->base_cache_used
+= c
->size
;
940 static void resolve_delta(struct object_entry
*delta_obj
,
941 struct base_data
*base
, struct base_data
*result
)
943 void *base_data
, *delta_data
;
946 int i
= delta_obj
- objects
;
947 int j
= base
->obj
- objects
;
948 obj_stat
[i
].delta_depth
= obj_stat
[j
].delta_depth
+ 1;
949 deepest_delta_lock();
950 if (deepest_delta
< obj_stat
[i
].delta_depth
)
951 deepest_delta
= obj_stat
[i
].delta_depth
;
952 deepest_delta_unlock();
953 obj_stat
[i
].base_object_no
= j
;
955 delta_data
= get_data_from_pack(delta_obj
);
956 base_data
= get_base_data(base
);
957 result
->obj
= delta_obj
;
958 result
->data
= patch_delta(base_data
, base
->size
,
959 delta_data
, delta_obj
->size
, &result
->size
);
962 bad_object(delta_obj
->idx
.offset
, _("failed to apply delta"));
963 hash_object_file(result
->data
, result
->size
,
964 type_name(delta_obj
->real_type
), &delta_obj
->idx
.oid
);
965 sha1_object(result
->data
, NULL
, result
->size
, delta_obj
->real_type
,
966 &delta_obj
->idx
.oid
);
968 nr_resolved_deltas
++;
973 * Standard boolean compare-and-swap: atomically check whether "*type" is
974 * "want"; if so, swap in "set" and return true. Otherwise, leave it untouched
977 static int compare_and_swap_type(signed char *type
,
978 enum object_type want
,
979 enum object_type set
)
981 enum object_type old
;
992 static struct base_data
*find_unresolved_deltas_1(struct base_data
*base
,
993 struct base_data
*prev_base
)
995 if (base
->ref_last
== -1 && base
->ofs_last
== -1) {
996 find_ref_delta_children(&base
->obj
->idx
.oid
,
997 &base
->ref_first
, &base
->ref_last
,
1000 find_ofs_delta_children(base
->obj
->idx
.offset
,
1001 &base
->ofs_first
, &base
->ofs_last
,
1004 if (base
->ref_last
== -1 && base
->ofs_last
== -1) {
1009 link_base_data(prev_base
, base
);
1012 if (base
->ref_first
<= base
->ref_last
) {
1013 struct object_entry
*child
= objects
+ ref_deltas
[base
->ref_first
].obj_no
;
1014 struct base_data
*result
= alloc_base_data();
1016 if (!compare_and_swap_type(&child
->real_type
, OBJ_REF_DELTA
,
1017 base
->obj
->real_type
))
1018 die("BUG: child->real_type != OBJ_REF_DELTA");
1020 resolve_delta(child
, base
, result
);
1021 if (base
->ref_first
== base
->ref_last
&& base
->ofs_last
== -1)
1022 free_base_data(base
);
1028 if (base
->ofs_first
<= base
->ofs_last
) {
1029 struct object_entry
*child
= objects
+ ofs_deltas
[base
->ofs_first
].obj_no
;
1030 struct base_data
*result
= alloc_base_data();
1032 assert(child
->real_type
== OBJ_OFS_DELTA
);
1033 child
->real_type
= base
->obj
->real_type
;
1034 resolve_delta(child
, base
, result
);
1035 if (base
->ofs_first
== base
->ofs_last
)
1036 free_base_data(base
);
1042 unlink_base_data(base
);
1046 static void find_unresolved_deltas(struct base_data
*base
)
1048 struct base_data
*new_base
, *prev_base
= NULL
;
1050 new_base
= find_unresolved_deltas_1(base
, prev_base
);
1060 prev_base
= base
->base
;
1065 static int compare_ofs_delta_entry(const void *a
, const void *b
)
1067 const struct ofs_delta_entry
*delta_a
= a
;
1068 const struct ofs_delta_entry
*delta_b
= b
;
1070 return delta_a
->offset
< delta_b
->offset
? -1 :
1071 delta_a
->offset
> delta_b
->offset
? 1 :
1075 static int compare_ref_delta_entry(const void *a
, const void *b
)
1077 const struct ref_delta_entry
*delta_a
= a
;
1078 const struct ref_delta_entry
*delta_b
= b
;
1080 return oidcmp(&delta_a
->oid
, &delta_b
->oid
);
1083 static void resolve_base(struct object_entry
*obj
)
1085 struct base_data
*base_obj
= alloc_base_data();
1086 base_obj
->obj
= obj
;
1087 base_obj
->data
= NULL
;
1088 find_unresolved_deltas(base_obj
);
1092 static void *threaded_second_pass(void *data
)
1094 set_thread_data(data
);
1098 display_progress(progress
, nr_resolved_deltas
);
1101 while (nr_dispatched
< nr_objects
&&
1102 is_delta_type(objects
[nr_dispatched
].type
))
1104 if (nr_dispatched
>= nr_objects
) {
1108 i
= nr_dispatched
++;
1111 resolve_base(&objects
[i
]);
1119 * - find locations of all objects;
1120 * - calculate SHA1 of all non-delta objects;
1121 * - remember base (SHA1 or offset) for all deltas.
1123 static void parse_pack_objects(unsigned char *hash
)
1125 int i
, nr_delays
= 0;
1126 struct ofs_delta_entry
*ofs_delta
= ofs_deltas
;
1127 struct object_id ref_delta_oid
;
1131 progress
= start_progress(
1132 from_stdin
? _("Receiving objects") : _("Indexing objects"),
1134 for (i
= 0; i
< nr_objects
; i
++) {
1135 struct object_entry
*obj
= &objects
[i
];
1136 void *data
= unpack_raw_entry(obj
, &ofs_delta
->offset
,
1139 obj
->real_type
= obj
->type
;
1140 if (obj
->type
== OBJ_OFS_DELTA
) {
1142 ofs_delta
->obj_no
= i
;
1144 } else if (obj
->type
== OBJ_REF_DELTA
) {
1145 ALLOC_GROW(ref_deltas
, nr_ref_deltas
+ 1, ref_deltas_alloc
);
1146 oidcpy(&ref_deltas
[nr_ref_deltas
].oid
, &ref_delta_oid
);
1147 ref_deltas
[nr_ref_deltas
].obj_no
= i
;
1150 /* large blobs, check later */
1151 obj
->real_type
= OBJ_BAD
;
1154 sha1_object(data
, NULL
, obj
->size
, obj
->type
,
1157 display_progress(progress
, i
+1);
1159 objects
[i
].idx
.offset
= consumed_bytes
;
1160 stop_progress(&progress
);
1162 /* Check pack integrity */
1164 the_hash_algo
->final_fn(hash
, &input_ctx
);
1165 if (hashcmp(fill(the_hash_algo
->rawsz
), hash
))
1166 die(_("pack is corrupted (SHA1 mismatch)"));
1167 use(the_hash_algo
->rawsz
);
1169 /* If input_fd is a file, we should have reached its end now. */
1170 if (fstat(input_fd
, &st
))
1171 die_errno(_("cannot fstat packfile"));
1172 if (S_ISREG(st
.st_mode
) &&
1173 lseek(input_fd
, 0, SEEK_CUR
) - input_len
!= st
.st_size
)
1174 die(_("pack has junk at the end"));
1176 for (i
= 0; i
< nr_objects
; i
++) {
1177 struct object_entry
*obj
= &objects
[i
];
1178 if (obj
->real_type
!= OBJ_BAD
)
1180 obj
->real_type
= obj
->type
;
1181 sha1_object(NULL
, obj
, obj
->size
, obj
->type
,
1186 die(_("confusion beyond insanity in parse_pack_objects()"));
1191 * - for all non-delta objects, look if it is used as a base for
1193 * - if used as a base, uncompress the object and apply all deltas,
1194 * recursively checking if the resulting object is used as a base
1195 * for some more deltas.
1197 static void resolve_deltas(void)
1201 if (!nr_ofs_deltas
&& !nr_ref_deltas
)
1204 /* Sort deltas by base SHA1/offset for fast searching */
1205 QSORT(ofs_deltas
, nr_ofs_deltas
, compare_ofs_delta_entry
);
1206 QSORT(ref_deltas
, nr_ref_deltas
, compare_ref_delta_entry
);
1208 if (verbose
|| show_resolving_progress
)
1209 progress
= start_progress(_("Resolving deltas"),
1210 nr_ref_deltas
+ nr_ofs_deltas
);
1214 if (nr_threads
> 1 || getenv("GIT_FORCE_THREADS")) {
1216 for (i
= 0; i
< nr_threads
; i
++) {
1217 int ret
= pthread_create(&thread_data
[i
].thread
, NULL
,
1218 threaded_second_pass
, thread_data
+ i
);
1220 die(_("unable to create thread: %s"),
1223 for (i
= 0; i
< nr_threads
; i
++)
1224 pthread_join(thread_data
[i
].thread
, NULL
);
1230 for (i
= 0; i
< nr_objects
; i
++) {
1231 struct object_entry
*obj
= &objects
[i
];
1233 if (is_delta_type(obj
->type
))
1236 display_progress(progress
, nr_resolved_deltas
);
1242 * - append objects to convert thin pack to full pack if required
1243 * - write the final pack hash
1245 static void fix_unresolved_deltas(struct hashfile
*f
);
1246 static void conclude_pack(int fix_thin_pack
, const char *curr_pack
, unsigned char *pack_hash
)
1248 if (nr_ref_deltas
+ nr_ofs_deltas
== nr_resolved_deltas
) {
1249 stop_progress(&progress
);
1250 /* Flush remaining pack final hash. */
1255 if (fix_thin_pack
) {
1257 unsigned char read_hash
[GIT_MAX_RAWSZ
], tail_hash
[GIT_MAX_RAWSZ
];
1258 struct strbuf msg
= STRBUF_INIT
;
1259 int nr_unresolved
= nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
;
1260 int nr_objects_initial
= nr_objects
;
1261 if (nr_unresolved
<= 0)
1262 die(_("confusion beyond insanity"));
1263 REALLOC_ARRAY(objects
, nr_objects
+ nr_unresolved
+ 1);
1264 memset(objects
+ nr_objects
+ 1, 0,
1265 nr_unresolved
* sizeof(*objects
));
1266 f
= hashfd(output_fd
, curr_pack
);
1267 fix_unresolved_deltas(f
);
1268 strbuf_addf(&msg
, Q_("completed with %d local object",
1269 "completed with %d local objects",
1270 nr_objects
- nr_objects_initial
),
1271 nr_objects
- nr_objects_initial
);
1272 stop_progress_msg(&progress
, msg
.buf
);
1273 strbuf_release(&msg
);
1274 hashclose(f
, tail_hash
, 0);
1275 hashcpy(read_hash
, pack_hash
);
1276 fixup_pack_header_footer(output_fd
, pack_hash
,
1277 curr_pack
, nr_objects
,
1278 read_hash
, consumed_bytes
-the_hash_algo
->rawsz
);
1279 if (hashcmp(read_hash
, tail_hash
) != 0)
1280 die(_("Unexpected tail checksum for %s "
1281 "(disk corruption?)"), curr_pack
);
1283 if (nr_ofs_deltas
+ nr_ref_deltas
!= nr_resolved_deltas
)
1284 die(Q_("pack has %d unresolved delta",
1285 "pack has %d unresolved deltas",
1286 nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
),
1287 nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
);
1290 static int write_compressed(struct hashfile
*f
, void *in
, unsigned int size
)
1294 unsigned char outbuf
[4096];
1296 git_deflate_init(&stream
, zlib_compression_level
);
1297 stream
.next_in
= in
;
1298 stream
.avail_in
= size
;
1301 stream
.next_out
= outbuf
;
1302 stream
.avail_out
= sizeof(outbuf
);
1303 status
= git_deflate(&stream
, Z_FINISH
);
1304 hashwrite(f
, outbuf
, sizeof(outbuf
) - stream
.avail_out
);
1305 } while (status
== Z_OK
);
1307 if (status
!= Z_STREAM_END
)
1308 die(_("unable to deflate appended object (%d)"), status
);
1309 size
= stream
.total_out
;
1310 git_deflate_end(&stream
);
1314 static struct object_entry
*append_obj_to_pack(struct hashfile
*f
,
1315 const unsigned char *sha1
, void *buf
,
1316 unsigned long size
, enum object_type type
)
1318 struct object_entry
*obj
= &objects
[nr_objects
++];
1319 unsigned char header
[10];
1320 unsigned long s
= size
;
1322 unsigned char c
= (type
<< 4) | (s
& 15);
1325 header
[n
++] = c
| 0x80;
1331 hashwrite(f
, header
, n
);
1333 obj
[0].hdr_size
= n
;
1335 obj
[0].real_type
= type
;
1336 obj
[1].idx
.offset
= obj
[0].idx
.offset
+ n
;
1337 obj
[1].idx
.offset
+= write_compressed(f
, buf
, size
);
1338 obj
[0].idx
.crc32
= crc32_end(f
);
1340 hashcpy(obj
->idx
.oid
.hash
, sha1
);
1344 static int delta_pos_compare(const void *_a
, const void *_b
)
1346 struct ref_delta_entry
*a
= *(struct ref_delta_entry
**)_a
;
1347 struct ref_delta_entry
*b
= *(struct ref_delta_entry
**)_b
;
1348 return a
->obj_no
- b
->obj_no
;
1351 static void fix_unresolved_deltas(struct hashfile
*f
)
1353 struct ref_delta_entry
**sorted_by_pos
;
1357 * Since many unresolved deltas may well be themselves base objects
1358 * for more unresolved deltas, we really want to include the
1359 * smallest number of base objects that would cover as much delta
1360 * as possible by picking the
1361 * trunc deltas first, allowing for other deltas to resolve without
1362 * additional base objects. Since most base objects are to be found
1363 * before deltas depending on them, a good heuristic is to start
1364 * resolving deltas in the same order as their position in the pack.
1366 ALLOC_ARRAY(sorted_by_pos
, nr_ref_deltas
);
1367 for (i
= 0; i
< nr_ref_deltas
; i
++)
1368 sorted_by_pos
[i
] = &ref_deltas
[i
];
1369 QSORT(sorted_by_pos
, nr_ref_deltas
, delta_pos_compare
);
1371 for (i
= 0; i
< nr_ref_deltas
; i
++) {
1372 struct ref_delta_entry
*d
= sorted_by_pos
[i
];
1373 enum object_type type
;
1374 struct base_data
*base_obj
= alloc_base_data();
1376 if (objects
[d
->obj_no
].real_type
!= OBJ_REF_DELTA
)
1378 base_obj
->data
= read_object_file(&d
->oid
, &type
,
1380 if (!base_obj
->data
)
1383 if (check_object_signature(&d
->oid
, base_obj
->data
,
1384 base_obj
->size
, type_name(type
)))
1385 die(_("local object %s is corrupt"), oid_to_hex(&d
->oid
));
1386 base_obj
->obj
= append_obj_to_pack(f
, d
->oid
.hash
,
1387 base_obj
->data
, base_obj
->size
, type
);
1388 find_unresolved_deltas(base_obj
);
1389 display_progress(progress
, nr_resolved_deltas
);
1391 free(sorted_by_pos
);
1394 static const char *derive_filename(const char *pack_name
, const char *suffix
,
1398 if (!strip_suffix(pack_name
, ".pack", &len
))
1399 die(_("packfile name '%s' does not end with '.pack'"),
1401 strbuf_add(buf
, pack_name
, len
);
1402 strbuf_addch(buf
, '.');
1403 strbuf_addstr(buf
, suffix
);
1407 static void write_special_file(const char *suffix
, const char *msg
,
1408 const char *pack_name
, const unsigned char *hash
,
1409 const char **report
)
1411 struct strbuf name_buf
= STRBUF_INIT
;
1412 const char *filename
;
1414 int msg_len
= strlen(msg
);
1417 filename
= derive_filename(pack_name
, suffix
, &name_buf
);
1419 filename
= odb_pack_name(&name_buf
, hash
, suffix
);
1421 fd
= odb_pack_keep(filename
);
1423 if (errno
!= EEXIST
)
1424 die_errno(_("cannot write %s file '%s'"),
1428 write_or_die(fd
, msg
, msg_len
);
1429 write_or_die(fd
, "\n", 1);
1432 die_errno(_("cannot close written %s file '%s'"),
1437 strbuf_release(&name_buf
);
1440 static void final(const char *final_pack_name
, const char *curr_pack_name
,
1441 const char *final_index_name
, const char *curr_index_name
,
1442 const char *keep_msg
, const char *promisor_msg
,
1443 unsigned char *hash
)
1445 const char *report
= "pack";
1446 struct strbuf pack_name
= STRBUF_INIT
;
1447 struct strbuf index_name
= STRBUF_INIT
;
1453 fsync_or_die(output_fd
, curr_pack_name
);
1454 err
= close(output_fd
);
1456 die_errno(_("error while closing pack file"));
1460 write_special_file("keep", keep_msg
, final_pack_name
, hash
,
1463 write_special_file("promisor", promisor_msg
, final_pack_name
,
1466 if (final_pack_name
!= curr_pack_name
) {
1467 if (!final_pack_name
)
1468 final_pack_name
= odb_pack_name(&pack_name
, hash
, "pack");
1469 if (finalize_object_file(curr_pack_name
, final_pack_name
))
1470 die(_("cannot store pack file"));
1471 } else if (from_stdin
)
1472 chmod(final_pack_name
, 0444);
1474 if (final_index_name
!= curr_index_name
) {
1475 if (!final_index_name
)
1476 final_index_name
= odb_pack_name(&index_name
, hash
, "idx");
1477 if (finalize_object_file(curr_index_name
, final_index_name
))
1478 die(_("cannot store index file"));
1480 chmod(final_index_name
, 0444);
1483 printf("%s\n", sha1_to_hex(hash
));
1485 struct strbuf buf
= STRBUF_INIT
;
1487 strbuf_addf(&buf
, "%s\t%s\n", report
, sha1_to_hex(hash
));
1488 write_or_die(1, buf
.buf
, buf
.len
);
1489 strbuf_release(&buf
);
1492 * Let's just mimic git-unpack-objects here and write
1493 * the last part of the input buffer to stdout.
1496 err
= xwrite(1, input_buffer
+ input_offset
, input_len
);
1500 input_offset
+= err
;
1504 strbuf_release(&index_name
);
1505 strbuf_release(&pack_name
);
1508 static int git_index_pack_config(const char *k
, const char *v
, void *cb
)
1510 struct pack_idx_option
*opts
= cb
;
1512 if (!strcmp(k
, "pack.indexversion")) {
1513 opts
->version
= git_config_int(k
, v
);
1514 if (opts
->version
> 2)
1515 die(_("bad pack.indexversion=%"PRIu32
), opts
->version
);
1518 if (!strcmp(k
, "pack.threads")) {
1519 nr_threads
= git_config_int(k
, v
);
1521 die(_("invalid number of threads specified (%d)"),
1524 if (nr_threads
!= 1)
1525 warning(_("no threads support, ignoring %s"), k
);
1530 return git_default_config(k
, v
, cb
);
1533 static int cmp_uint32(const void *a_
, const void *b_
)
1535 uint32_t a
= *((uint32_t *)a_
);
1536 uint32_t b
= *((uint32_t *)b_
);
1538 return (a
< b
) ? -1 : (a
!= b
);
1541 static void read_v2_anomalous_offsets(struct packed_git
*p
,
1542 struct pack_idx_option
*opts
)
1544 const uint32_t *idx1
, *idx2
;
1547 /* The address of the 4-byte offset table */
1548 idx1
= (((const uint32_t *)p
->index_data
)
1549 + 2 /* 8-byte header */
1551 + 5 * p
->num_objects
/* 20-byte SHA-1 table */
1552 + p
->num_objects
/* CRC32 table */
1555 /* The address of the 8-byte offset table */
1556 idx2
= idx1
+ p
->num_objects
;
1558 for (i
= 0; i
< p
->num_objects
; i
++) {
1559 uint32_t off
= ntohl(idx1
[i
]);
1560 if (!(off
& 0x80000000))
1562 off
= off
& 0x7fffffff;
1563 check_pack_index_ptr(p
, &idx2
[off
* 2]);
1567 * The real offset is ntohl(idx2[off * 2]) in high 4
1568 * octets, and ntohl(idx2[off * 2 + 1]) in low 4
1569 * octets. But idx2[off * 2] is Zero!!!
1571 ALLOC_GROW(opts
->anomaly
, opts
->anomaly_nr
+ 1, opts
->anomaly_alloc
);
1572 opts
->anomaly
[opts
->anomaly_nr
++] = ntohl(idx2
[off
* 2 + 1]);
1575 QSORT(opts
->anomaly
, opts
->anomaly_nr
, cmp_uint32
);
1578 static void read_idx_option(struct pack_idx_option
*opts
, const char *pack_name
)
1580 struct packed_git
*p
= add_packed_git(pack_name
, strlen(pack_name
), 1);
1583 die(_("Cannot open existing pack file '%s'"), pack_name
);
1584 if (open_pack_index(p
))
1585 die(_("Cannot open existing pack idx file for '%s'"), pack_name
);
1587 /* Read the attributes from the existing idx file */
1588 opts
->version
= p
->index_version
;
1590 if (opts
->version
== 2)
1591 read_v2_anomalous_offsets(p
, opts
);
1594 * Get rid of the idx file as we do not need it anymore.
1595 * NEEDSWORK: extract this bit from free_pack_by_name() in
1596 * sha1_file.c, perhaps? It shouldn't matter very much as we
1597 * know we haven't installed this pack (hence we never have
1598 * read anything from it).
1600 close_pack_index(p
);
1604 static void show_pack_info(int stat_only
)
1606 int i
, baseobjects
= nr_objects
- nr_ref_deltas
- nr_ofs_deltas
;
1607 unsigned long *chain_histogram
= NULL
;
1610 chain_histogram
= xcalloc(deepest_delta
, sizeof(unsigned long));
1612 for (i
= 0; i
< nr_objects
; i
++) {
1613 struct object_entry
*obj
= &objects
[i
];
1615 if (is_delta_type(obj
->type
))
1616 chain_histogram
[obj_stat
[i
].delta_depth
- 1]++;
1619 printf("%s %-6s %lu %lu %"PRIuMAX
,
1620 oid_to_hex(&obj
->idx
.oid
),
1621 type_name(obj
->real_type
), obj
->size
,
1622 (unsigned long)(obj
[1].idx
.offset
- obj
->idx
.offset
),
1623 (uintmax_t)obj
->idx
.offset
);
1624 if (is_delta_type(obj
->type
)) {
1625 struct object_entry
*bobj
= &objects
[obj_stat
[i
].base_object_no
];
1626 printf(" %u %s", obj_stat
[i
].delta_depth
,
1627 oid_to_hex(&bobj
->idx
.oid
));
1633 printf_ln(Q_("non delta: %d object",
1634 "non delta: %d objects",
1637 for (i
= 0; i
< deepest_delta
; i
++) {
1638 if (!chain_histogram
[i
])
1640 printf_ln(Q_("chain length = %d: %lu object",
1641 "chain length = %d: %lu objects",
1642 chain_histogram
[i
]),
1644 chain_histogram
[i
]);
1648 int cmd_index_pack(int argc
, const char **argv
, const char *prefix
)
1650 int i
, fix_thin_pack
= 0, verify
= 0, stat_only
= 0;
1651 const char *curr_index
;
1652 const char *index_name
= NULL
, *pack_name
= NULL
;
1653 const char *keep_msg
= NULL
;
1654 const char *promisor_msg
= NULL
;
1655 struct strbuf index_name_buf
= STRBUF_INIT
;
1656 struct pack_idx_entry
**idx_objects
;
1657 struct pack_idx_option opts
;
1658 unsigned char pack_hash
[GIT_MAX_RAWSZ
];
1659 unsigned foreign_nr
= 1; /* zero is a "good" value, assume bad */
1660 int report_end_of_input
= 0;
1663 * index-pack never needs to fetch missing objects, since it only
1664 * accesses the repo to do hash collision checks
1666 fetch_if_missing
= 0;
1668 if (argc
== 2 && !strcmp(argv
[1], "-h"))
1669 usage(index_pack_usage
);
1671 check_replace_refs
= 0;
1672 fsck_options
.walk
= mark_link
;
1674 reset_pack_idx_option(&opts
);
1675 git_config(git_index_pack_config
, &opts
);
1676 if (prefix
&& chdir(prefix
))
1677 die(_("Cannot come back to cwd"));
1679 for (i
= 1; i
< argc
; i
++) {
1680 const char *arg
= argv
[i
];
1683 if (!strcmp(arg
, "--stdin")) {
1685 } else if (!strcmp(arg
, "--fix-thin")) {
1687 } else if (skip_to_optional_arg(arg
, "--strict", &arg
)) {
1690 fsck_set_msg_types(&fsck_options
, arg
);
1691 } else if (!strcmp(arg
, "--check-self-contained-and-connected")) {
1693 check_self_contained_and_connected
= 1;
1694 } else if (!strcmp(arg
, "--fsck-objects")) {
1696 } else if (!strcmp(arg
, "--verify")) {
1698 } else if (!strcmp(arg
, "--verify-stat")) {
1701 } else if (!strcmp(arg
, "--verify-stat-only")) {
1705 } else if (skip_to_optional_arg(arg
, "--keep", &keep_msg
)) {
1706 ; /* nothing to do */
1707 } else if (skip_to_optional_arg(arg
, "--promisor", &promisor_msg
)) {
1708 ; /* already parsed */
1709 } else if (starts_with(arg
, "--threads=")) {
1711 nr_threads
= strtoul(arg
+10, &end
, 0);
1712 if (!arg
[10] || *end
|| nr_threads
< 0)
1713 usage(index_pack_usage
);
1715 if (nr_threads
!= 1)
1716 warning(_("no threads support, "
1717 "ignoring %s"), arg
);
1720 } else if (starts_with(arg
, "--pack_header=")) {
1721 struct pack_header
*hdr
;
1724 hdr
= (struct pack_header
*)input_buffer
;
1725 hdr
->hdr_signature
= htonl(PACK_SIGNATURE
);
1726 hdr
->hdr_version
= htonl(strtoul(arg
+ 14, &c
, 10));
1728 die(_("bad %s"), arg
);
1729 hdr
->hdr_entries
= htonl(strtoul(c
+ 1, &c
, 10));
1731 die(_("bad %s"), arg
);
1732 input_len
= sizeof(*hdr
);
1733 } else if (!strcmp(arg
, "-v")) {
1735 } else if (!strcmp(arg
, "--show-resolving-progress")) {
1736 show_resolving_progress
= 1;
1737 } else if (!strcmp(arg
, "--report-end-of-input")) {
1738 report_end_of_input
= 1;
1739 } else if (!strcmp(arg
, "-o")) {
1740 if (index_name
|| (i
+1) >= argc
)
1741 usage(index_pack_usage
);
1742 index_name
= argv
[++i
];
1743 } else if (starts_with(arg
, "--index-version=")) {
1745 opts
.version
= strtoul(arg
+ 16, &c
, 10);
1746 if (opts
.version
> 2)
1747 die(_("bad %s"), arg
);
1749 opts
.off32_limit
= strtoul(c
+1, &c
, 0);
1750 if (*c
|| opts
.off32_limit
& 0x80000000)
1751 die(_("bad %s"), arg
);
1752 } else if (skip_prefix(arg
, "--max-input-size=", &arg
)) {
1753 max_input_size
= strtoumax(arg
, NULL
, 10);
1755 usage(index_pack_usage
);
1760 usage(index_pack_usage
);
1764 if (!pack_name
&& !from_stdin
)
1765 usage(index_pack_usage
);
1766 if (fix_thin_pack
&& !from_stdin
)
1767 die(_("--fix-thin cannot be used without --stdin"));
1768 if (from_stdin
&& !startup_info
->have_repository
)
1769 die(_("--stdin requires a git repository"));
1770 if (!index_name
&& pack_name
)
1771 index_name
= derive_filename(pack_name
, "idx", &index_name_buf
);
1775 die(_("--verify with no packfile name given"));
1776 read_idx_option(&opts
, index_name
);
1777 opts
.flags
|= WRITE_IDX_VERIFY
| WRITE_IDX_STRICT
;
1780 opts
.flags
|= WRITE_IDX_STRICT
;
1784 nr_threads
= online_cpus();
1785 /* An experiment showed that more threads does not mean faster */
1791 curr_pack
= open_pack_file(pack_name
);
1792 parse_pack_header();
1793 objects
= xcalloc(st_add(nr_objects
, 1), sizeof(struct object_entry
));
1795 obj_stat
= xcalloc(st_add(nr_objects
, 1), sizeof(struct object_stat
));
1796 ofs_deltas
= xcalloc(nr_objects
, sizeof(struct ofs_delta_entry
));
1797 parse_pack_objects(pack_hash
);
1798 if (report_end_of_input
)
1799 write_in_full(2, "\0", 1);
1801 conclude_pack(fix_thin_pack
, curr_pack
, pack_hash
);
1805 foreign_nr
= check_objects();
1808 show_pack_info(stat_only
);
1810 ALLOC_ARRAY(idx_objects
, nr_objects
);
1811 for (i
= 0; i
< nr_objects
; i
++)
1812 idx_objects
[i
] = &objects
[i
].idx
;
1813 curr_index
= write_idx_file(index_name
, idx_objects
, nr_objects
, &opts
, pack_hash
);
1817 final(pack_name
, curr_pack
,
1818 index_name
, curr_index
,
1819 keep_msg
, promisor_msg
,
1824 strbuf_release(&index_name_buf
);
1825 if (pack_name
== NULL
)
1826 free((void *) curr_pack
);
1827 if (index_name
== NULL
)
1828 free((void *) curr_index
);
1831 * Let the caller know this pack is not self contained
1833 if (check_self_contained_and_connected
&& foreign_nr
)