2 * Copyright (c) 2020 Ori Bernstein
3 * Copyright (c) 2021 Stefan Sperling <stsp@openbsd.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <sys/types.h>
19 #include <sys/queue.h>
39 #include "got_error.h"
40 #include "got_cancel.h"
41 #include "got_object.h"
43 #include "got_reference.h"
44 #include "got_repository_admin.h"
45 #include "got_opentemp.h"
47 #include "got_lib_deltify.h"
48 #include "got_lib_delta.h"
49 #include "got_lib_object.h"
50 #include "got_lib_object_idset.h"
51 #include "got_lib_object_cache.h"
52 #include "got_lib_deflate.h"
53 #include "got_lib_pack.h"
54 #include "got_lib_pack_create.h"
55 #include "got_lib_privsep.h"
56 #include "got_lib_repository.h"
57 #include "got_lib_ratelimit.h"
58 #include "got_lib_inflate.h"
60 #include "murmurhash2.h"
63 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
67 #define MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
71 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
74 struct got_pack_meta {
75 struct got_object_id id;
81 /* The best delta we picked */
82 struct got_pack_meta *head;
83 struct got_pack_meta *prev;
84 unsigned char *delta_buf; /* if encoded in memory (compressed) */
85 off_t delta_offset; /* offset in delta cache file (compressed) */
86 off_t delta_len; /* encoded delta length */
87 off_t delta_compressed_len; /* encoded+compressed delta length */
90 off_t reused_delta_offset; /* offset of delta in reused pack file */
91 struct got_object_id *base_obj_id;
93 /* Only used for delta window */
94 struct got_delta_table *dtab;
96 /* Only used for writing offset deltas */
100 struct got_pack_metavec {
101 struct got_pack_meta **meta;
106 static const struct got_error *
107 alloc_meta(struct got_pack_meta **new, struct got_object_id *id,
108 const char *path, int obj_type, time_t mtime, uint32_t seed)
110 struct got_pack_meta *m;
114 m = calloc(1, sizeof(*m));
116 return got_error_from_errno("calloc");
118 memcpy(&m->id, id, sizeof(m->id));
120 m->path_hash = murmurhash2(path, strlen(path), seed);
121 m->obj_type = obj_type;
128 clear_meta(struct got_pack_meta *meta)
133 free(meta->delta_buf);
134 meta->delta_buf = NULL;
135 free(meta->base_obj_id);
136 meta->base_obj_id = NULL;
137 meta->reused_delta_offset = 0;
141 free_nmeta(struct got_pack_meta **meta, int nmeta)
145 for (i = 0; i < nmeta; i++)
151 delta_order_cmp(const void *pa, const void *pb)
153 struct got_pack_meta *a, *b;
155 a = *(struct got_pack_meta **)pa;
156 b = *(struct got_pack_meta **)pb;
158 if (a->obj_type != b->obj_type)
159 return a->obj_type - b->obj_type;
160 if (a->path_hash < b->path_hash)
162 if (a->path_hash > b->path_hash)
164 if (a->mtime < b->mtime)
166 if (a->mtime > b->mtime)
168 return got_object_id_cmp(&a->id, &b->id);
172 delta_size(struct got_delta_instruction *deltas, int ndeltas)
176 for (i = 0; i < ndeltas; i++) {
178 size += GOT_DELTA_SIZE_SHIFT;
180 size += deltas[i].len + 1;
185 static const struct got_error *
186 append(unsigned char **p, size_t *len, off_t *sz, void *seg, int nseg)
190 if (*len + nseg >= *sz) {
191 while (*len + nseg >= *sz)
193 n = realloc(*p, *sz);
195 return got_error_from_errno("realloc");
198 memcpy(*p + *len, seg, nseg);
203 static const struct got_error *
204 encode_delta_in_mem(struct got_pack_meta *m, struct got_raw_object *o,
205 struct got_delta_instruction *deltas, int ndeltas,
206 off_t delta_size, off_t base_size)
208 const struct got_error *err;
209 unsigned char buf[16], *bp;
211 size_t len = 0, compressed_len;
212 off_t bufsize = delta_size;
214 struct got_delta_instruction *d;
217 delta_buf = malloc(bufsize);
218 if (delta_buf == NULL)
219 return got_error_from_errno("malloc");
221 /* base object size */
222 buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
223 n = base_size >> GOT_DELTA_SIZE_SHIFT;
224 for (i = 1; n > 0; i++) {
225 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
226 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
227 n >>= GOT_DELTA_SIZE_SHIFT;
229 err = append(&delta_buf, &len, &bufsize, buf, i);
233 /* target object size */
234 buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
235 n = o->size >> GOT_DELTA_SIZE_SHIFT;
236 for (i = 1; n > 0; i++) {
237 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
238 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
239 n >>= GOT_DELTA_SIZE_SHIFT;
241 err = append(&delta_buf, &len, &bufsize, buf, i);
245 for (j = 0; j < ndeltas; j++) {
250 buf[0] = GOT_DELTA_BASE_COPY;
251 for (i = 0; i < 4; i++) {
252 /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
261 if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
262 /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
263 for (i = 0; i < 3 && n > 0; i++) {
264 buf[0] |= 1 << (i + 4);
269 err = append(&delta_buf, &len, &bufsize,
273 } else if (o->f == NULL) {
275 while (n != d->len) {
276 buf[0] = (d->len - n < 127) ? d->len - n : 127;
277 err = append(&delta_buf, &len, &bufsize,
281 err = append(&delta_buf, &len, &bufsize,
282 o->data + o->hdrlen + d->offset + n,
291 if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1) {
292 err = got_error_from_errno("fseeko");
296 while (n != d->len) {
297 buf[0] = (d->len - n < 127) ? d->len - n : 127;
298 err = append(&delta_buf, &len, &bufsize,
302 r = fread(content, 1, buf[0], o->f);
304 err = got_ferror(o->f, GOT_ERR_IO);
307 err = append(&delta_buf, &len, &bufsize,
316 err = got_deflate_to_mem_mmap(&m->delta_buf, &compressed_len,
317 NULL, NULL, delta_buf, 0, len);
322 m->delta_compressed_len = compressed_len;
328 static const struct got_error *
329 encode_delta(struct got_pack_meta *m, struct got_raw_object *o,
330 struct got_delta_instruction *deltas, int ndeltas,
331 off_t base_size, FILE *f)
333 const struct got_error *err;
334 unsigned char buf[16], *bp;
337 struct got_deflate_buf zb;
338 struct got_delta_instruction *d;
339 off_t delta_len = 0, compressed_len = 0;
341 err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
345 /* base object size */
346 buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
347 n = base_size >> GOT_DELTA_SIZE_SHIFT;
348 for (i = 1; n > 0; i++) {
349 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
350 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
351 n >>= GOT_DELTA_SIZE_SHIFT;
354 err = got_deflate_append_to_file_mmap(&zb, &compressed_len,
360 /* target object size */
361 buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
362 n = o->size >> GOT_DELTA_SIZE_SHIFT;
363 for (i = 1; n > 0; i++) {
364 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
365 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
366 n >>= GOT_DELTA_SIZE_SHIFT;
369 err = got_deflate_append_to_file_mmap(&zb, &compressed_len,
375 for (j = 0; j < ndeltas; j++) {
380 buf[0] = GOT_DELTA_BASE_COPY;
381 for (i = 0; i < 4; i++) {
382 /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
390 if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
391 /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
392 for (i = 0; i < 3 && n > 0; i++) {
393 buf[0] |= 1 << (i + 4);
398 err = got_deflate_append_to_file_mmap(&zb,
399 &compressed_len, buf, 0, bp - buf, f, NULL);
402 delta_len += (bp - buf);
403 } else if (o->f == NULL) {
405 while (n != d->len) {
406 buf[0] = (d->len - n < 127) ? d->len - n : 127;
407 err = got_deflate_append_to_file_mmap(&zb,
408 &compressed_len, buf, 0, 1, f, NULL);
412 err = got_deflate_append_to_file_mmap(&zb,
414 o->data + o->hdrlen + d->offset + n, 0,
424 if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1) {
425 err = got_error_from_errno("fseeko");
429 while (n != d->len) {
430 buf[0] = (d->len - n < 127) ? d->len - n : 127;
431 err = got_deflate_append_to_file_mmap(&zb,
432 &compressed_len, buf, 0, 1, f, NULL);
436 r = fread(content, 1, buf[0], o->f);
438 err = got_ferror(o->f, GOT_ERR_IO);
441 err = got_deflate_append_to_file_mmap(&zb,
442 &compressed_len, content, 0, buf[0], f,
452 err = got_deflate_flush(&zb, f, NULL, &compressed_len);
457 if (compressed_len != ftello(f) - m->delta_offset) {
458 err = got_error(GOT_ERR_COMPRESSION);
462 m->delta_len = delta_len;
463 m->delta_compressed_len = compressed_len;
465 got_deflate_end(&zb);
469 static const struct got_error *
470 report_progress(got_pack_progress_cb progress_cb, void *progress_arg,
471 struct got_ratelimit *rl, int ncolored, int nfound, int ntrees,
472 off_t packfile_size, int ncommits, int nobj_total, int obj_deltify,
475 const struct got_error *err;
478 if (progress_cb == NULL)
481 err = got_ratelimit_check(&elapsed, rl);
485 return progress_cb(progress_arg, ncolored, nfound, ntrees,
486 packfile_size, ncommits, nobj_total, obj_deltify, nobj_written);
489 static const struct got_error *
490 add_meta(struct got_pack_meta *m, struct got_pack_metavec *v)
492 if (v->nmeta == v->metasz){
493 size_t newsize = 2 * v->metasz;
494 struct got_pack_meta **new;
495 new = reallocarray(v->meta, newsize, sizeof(*new));
497 return got_error_from_errno("reallocarray");
502 v->meta[v->nmeta++] = m;
506 static const struct got_error *
507 find_pack_for_reuse(struct got_packidx **best_packidx,
508 struct got_repository *repo)
510 const struct got_error *err = NULL;
511 struct got_pathlist_entry *pe;
512 const char *best_packidx_path = NULL;
515 *best_packidx = NULL;
517 TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
518 const char *path_packidx = pe->path;
519 struct got_packidx *packidx;
522 err = got_repo_get_packidx(&packidx, path_packidx, repo);
526 nobj = be32toh(packidx->hdr.fanout_table[0xff]);
527 if (nobj > nobj_max) {
528 best_packidx_path = path_packidx;
533 if (best_packidx_path) {
534 err = got_repo_get_packidx(best_packidx, best_packidx_path,
542 struct imsgbuf *ibuf;
543 struct got_object_id *ids[GOT_IMSG_OBJ_ID_LIST_MAX_NIDS];
547 static const struct got_error *
548 send_id(struct got_object_id *id, void *data, void *arg)
550 const struct got_error *err = NULL;
551 struct send_id_arg *a = arg;
553 a->ids[a->nids++] = id;
555 if (a->nids >= GOT_IMSG_OBJ_ID_LIST_MAX_NIDS) {
556 err = got_privsep_send_object_idlist(a->ibuf, a->ids, a->nids);
565 static const struct got_error *
566 recv_reused_delta(struct got_imsg_reused_delta *delta,
567 struct got_object_idset *idset, struct got_pack_metavec *v)
569 struct got_pack_meta *m, *base;
571 if (delta->delta_offset + delta->delta_size < delta->delta_offset ||
572 delta->delta_offset +
573 delta->delta_compressed_size < delta->delta_offset)
574 return got_error(GOT_ERR_BAD_PACKFILE);
576 m = got_object_idset_get(idset, &delta->id);
578 return got_error(GOT_ERR_NO_OBJ);
580 base = got_object_idset_get(idset, &delta->base_id);
582 return got_error(GOT_ERR_NO_OBJ);
584 m->delta_len = delta->delta_size;
585 m->delta_compressed_len = delta->delta_compressed_size;
586 m->delta_offset = delta->delta_out_offset;
588 m->size = delta->result_size;
589 m->reused_delta_offset = delta->delta_offset;
590 m->base_obj_id = got_object_id_dup(&delta->base_id);
591 if (m->base_obj_id == NULL)
592 return got_error_from_errno("got_object_id_dup");
594 return add_meta(m, v);
597 static const struct got_error *
598 search_deltas(struct got_pack_metavec *v, struct got_object_idset *idset,
599 int delta_cache_fd, int ncolored, int nfound, int ntrees, int ncommits,
600 struct got_repository *repo,
601 got_pack_progress_cb progress_cb, void *progress_arg,
602 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
604 const struct got_error *err = NULL;
605 struct got_packidx *packidx;
606 struct got_pack *pack;
607 struct send_id_arg sia;
608 struct got_imsg_reused_delta deltas[GOT_IMSG_REUSED_DELTAS_MAX_NDELTAS];
611 err = find_pack_for_reuse(&packidx, repo);
618 err = got_object_prepare_delta_reuse(&pack, packidx,
619 delta_cache_fd, repo);
623 memset(&sia, 0, sizeof(sia));
624 sia.ibuf = pack->privsep_child->ibuf;
625 err = got_object_idset_for_each(idset, send_id, &sia);
629 err = got_privsep_send_object_idlist(pack->privsep_child->ibuf,
634 err = got_privsep_send_object_idlist_done(pack->privsep_child->ibuf);
642 err = (*cancel_cb)(cancel_arg);
647 err = got_privsep_recv_reused_deltas(&done, deltas, &ndeltas,
648 pack->privsep_child->ibuf);
652 for (i = 0; i < ndeltas; i++) {
653 struct got_imsg_reused_delta *delta = &deltas[i];
654 err = recv_reused_delta(delta, idset, v);
659 err = report_progress(progress_cb, progress_arg, rl,
660 ncolored, nfound, ntrees, 0L, ncommits,
661 got_object_idset_num_elements(idset), v->nmeta, 0);
669 static const struct got_error *
670 pick_deltas(struct got_pack_meta **meta, int nmeta, int ncolored,
671 int nfound, int ntrees, int ncommits, int nreused, FILE *delta_cache,
672 struct got_repository *repo,
673 got_pack_progress_cb progress_cb, void *progress_arg,
674 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
676 const struct got_error *err = NULL;
677 struct got_pack_meta *m = NULL, *base = NULL;
678 struct got_raw_object *raw = NULL, *base_raw = NULL;
679 struct got_delta_instruction *deltas = NULL, *best_deltas = NULL;
680 int i, j, ndeltas, best_ndeltas;
681 off_t size, best_size;
682 const int max_base_candidates = 3;
683 size_t delta_memsize = 0;
684 const size_t max_delta_memsize = 4 * GOT_DELTA_RESULT_SIZE_CACHED_MAX;
688 delta_seed = arc4random();
690 qsort(meta, nmeta, sizeof(struct got_pack_meta *), delta_order_cmp);
691 for (i = 0; i < nmeta; i++) {
693 err = (*cancel_cb)(cancel_arg);
697 err = report_progress(progress_cb, progress_arg, rl,
698 ncolored, nfound, ntrees, 0L, ncommits, nreused + nmeta,
704 if (m->obj_type == GOT_OBJ_TYPE_COMMIT ||
705 m->obj_type == GOT_OBJ_TYPE_TAG)
708 err = got_object_raw_open(&raw, &outfd, repo, &m->id);
713 if (raw->f == NULL) {
714 err = got_deltify_init_mem(&m->dtab, raw->data,
715 raw->hdrlen, raw->size + raw->hdrlen, delta_seed);
717 err = got_deltify_init(&m->dtab, raw->f, raw->hdrlen,
718 raw->size + raw->hdrlen, delta_seed);
723 if (i > max_base_candidates) {
724 struct got_pack_meta *n = NULL;
725 n = meta[i - (max_base_candidates + 1)];
726 got_deltify_free(n->dtab);
730 best_size = raw->size;
732 for (j = MAX(0, i - max_base_candidates); j < i; j++) {
734 err = (*cancel_cb)(cancel_arg);
739 /* long chains make unpacking slow, avoid such bases */
740 if (base->nchain >= 128 ||
741 base->obj_type != m->obj_type)
744 err = got_object_raw_open(&base_raw, &outfd, repo,
749 if (raw->f == NULL && base_raw->f == NULL) {
750 err = got_deltify_mem_mem(&deltas, &ndeltas,
751 raw->data, raw->hdrlen,
752 raw->size + raw->hdrlen, delta_seed,
753 base->dtab, base_raw->data,
755 base_raw->size + base_raw->hdrlen);
756 } else if (raw->f == NULL) {
757 err = got_deltify_mem_file(&deltas, &ndeltas,
758 raw->data, raw->hdrlen,
759 raw->size + raw->hdrlen, delta_seed,
760 base->dtab, base_raw->f,
762 base_raw->size + base_raw->hdrlen);
763 } else if (base_raw->f == NULL) {
764 err = got_deltify_file_mem(&deltas, &ndeltas,
766 raw->size + raw->hdrlen, delta_seed,
767 base->dtab, base_raw->data,
769 base_raw->size + base_raw->hdrlen);
771 err = got_deltify(&deltas, &ndeltas,
773 raw->size + raw->hdrlen, delta_seed,
774 base->dtab, base_raw->f, base_raw->hdrlen,
775 base_raw->size + base_raw->hdrlen);
777 got_object_raw_close(base_raw);
782 size = delta_size(deltas, ndeltas);
783 if (size + 32 < best_size){
785 * if we already picked a best delta,
790 best_deltas = deltas;
791 best_ndeltas = ndeltas;
793 m->nchain = base->nchain + 1;
795 m->head = base->head;
805 if (best_ndeltas > 0) {
806 if (best_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX &&
807 delta_memsize + best_size <= max_delta_memsize) {
808 delta_memsize += best_size;
809 err = encode_delta_in_mem(m, raw, best_deltas,
810 best_ndeltas, best_size, m->prev->size);
812 m->delta_offset = ftello(delta_cache);
813 err = encode_delta(m, raw, best_deltas,
814 best_ndeltas, m->prev->size, delta_cache);
823 got_object_raw_close(raw);
827 for (i = MAX(0, nmeta - max_base_candidates); i < nmeta; i++) {
828 got_deltify_free(meta[i]->dtab);
829 meta[i]->dtab = NULL;
832 got_object_raw_close(raw);
834 got_object_raw_close(base_raw);
835 if (outfd != -1 && close(outfd) == -1 && err == NULL)
836 err = got_error_from_errno("close");
842 static const struct got_error *
843 search_packidx(int *found, struct got_object_id *id,
844 struct got_repository *repo)
846 const struct got_error *err = NULL;
847 struct got_packidx *packidx = NULL;
852 err = got_repo_search_packidx(&packidx, &idx, repo, id);
854 *found = 1; /* object is already packed */
855 else if (err->code == GOT_ERR_NO_OBJ)
860 static const struct got_error *
861 add_object(int want_meta, struct got_object_idset *idset,
862 struct got_object_id *id, const char *path, int obj_type,
863 time_t mtime, uint32_t seed, int loose_obj_only,
864 struct got_repository *repo, int *ncolored, int *nfound, int *ntrees,
865 got_pack_progress_cb progress_cb, void *progress_arg,
866 struct got_ratelimit *rl)
868 const struct got_error *err;
869 struct got_pack_meta *m = NULL;
871 if (loose_obj_only) {
873 err = search_packidx(&is_packed, id, repo);
876 if (is_packed && want_meta)
881 err = alloc_meta(&m, id, path, obj_type, mtime, seed);
886 err = report_progress(progress_cb, progress_arg, rl,
887 *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
895 err = got_object_idset_add(idset, id, m);
903 static const struct got_error *
904 load_tree_entries(struct got_object_id_queue *ids, int want_meta,
905 struct got_object_idset *idset, struct got_object_idset *idset_exclude,
906 struct got_object_id *tree_id,
907 const char *dpath, time_t mtime, uint32_t seed, struct got_repository *repo,
908 int loose_obj_only, int *ncolored, int *nfound, int *ntrees,
909 got_pack_progress_cb progress_cb, void *progress_arg,
910 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
912 const struct got_error *err;
913 struct got_tree_object *tree;
917 err = got_object_open_as_tree(&tree, repo, tree_id);
922 err = report_progress(progress_cb, progress_arg, rl,
923 *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
927 for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
928 struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
929 struct got_object_id *id = got_tree_entry_get_id(e);
930 mode_t mode = got_tree_entry_get_mode(e);
933 err = (*cancel_cb)(cancel_arg);
938 if (got_object_tree_entry_is_submodule(e) ||
939 got_object_idset_contains(idset, id) ||
940 got_object_idset_contains(idset_exclude, id))
943 if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
944 got_tree_entry_get_name(e)) == -1) {
945 err = got_error_from_errno("asprintf");
950 struct got_object_qid *qid;
951 err = got_object_qid_alloc(&qid, id);
956 STAILQ_INSERT_TAIL(ids, qid, entry);
957 } else if (S_ISREG(mode) || S_ISLNK(mode)) {
958 err = add_object(want_meta,
959 want_meta ? idset : idset_exclude, id, p,
960 GOT_OBJ_TYPE_BLOB, mtime, seed, loose_obj_only,
961 repo, ncolored, nfound, ntrees,
962 progress_cb, progress_arg, rl);
973 got_object_tree_close(tree);
978 static const struct got_error *
979 load_tree(int want_meta, struct got_object_idset *idset,
980 struct got_object_idset *idset_exclude,
981 struct got_object_id *tree_id, const char *dpath, time_t mtime,
982 uint32_t seed, struct got_repository *repo, int loose_obj_only,
983 int *ncolored, int *nfound, int *ntrees,
984 got_pack_progress_cb progress_cb, void *progress_arg,
985 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
987 const struct got_error *err = NULL;
988 struct got_object_id_queue tree_ids;
989 struct got_object_qid *qid;
991 if (got_object_idset_contains(idset, tree_id) ||
992 got_object_idset_contains(idset_exclude, tree_id))
995 err = got_object_qid_alloc(&qid, tree_id);
998 qid->data = strdup(dpath);
999 if (qid->data == NULL) {
1000 err = got_error_from_errno("strdup");
1001 got_object_qid_free(qid);
1005 STAILQ_INIT(&tree_ids);
1006 STAILQ_INSERT_TAIL(&tree_ids, qid, entry);
1008 while (!STAILQ_EMPTY(&tree_ids)) {
1011 err = (*cancel_cb)(cancel_arg);
1016 qid = STAILQ_FIRST(&tree_ids);
1017 STAILQ_REMOVE_HEAD(&tree_ids, entry);
1020 if (got_object_idset_contains(idset, &qid->id) ||
1021 got_object_idset_contains(idset_exclude, &qid->id)) {
1023 got_object_qid_free(qid);
1027 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1028 &qid->id, path, GOT_OBJ_TYPE_TREE,
1029 mtime, seed, loose_obj_only, repo,
1030 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1033 got_object_qid_free(qid);
1037 err = load_tree_entries(&tree_ids, want_meta, idset,
1038 idset_exclude, &qid->id,
1039 path, mtime, seed, repo, loose_obj_only, ncolored, nfound,
1040 ntrees, progress_cb, progress_arg, rl,
1041 cancel_cb, cancel_arg);
1043 got_object_qid_free(qid);
1048 STAILQ_FOREACH(qid, &tree_ids, entry)
1050 got_object_id_queue_free(&tree_ids);
1054 static const struct got_error *
1055 load_commit(int want_meta, struct got_object_idset *idset,
1056 struct got_object_idset *idset_exclude,
1057 struct got_object_id *id, struct got_repository *repo, uint32_t seed,
1058 int loose_obj_only, int *ncolored, int *nfound, int *ntrees,
1059 got_pack_progress_cb progress_cb, void *progress_arg,
1060 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1062 const struct got_error *err;
1063 struct got_commit_object *commit;
1065 if (got_object_idset_contains(idset, id) ||
1066 got_object_idset_contains(idset_exclude, id))
1069 if (loose_obj_only) {
1071 err = search_packidx(&is_packed, id, repo);
1074 if (is_packed && want_meta)
1078 err = got_object_open_as_commit(&commit, repo, id);
1082 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1083 id, "", GOT_OBJ_TYPE_COMMIT,
1084 got_object_commit_get_committer_time(commit), seed,
1085 loose_obj_only, repo,
1086 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1090 err = load_tree(want_meta, idset, idset_exclude,
1091 got_object_commit_get_tree_id(commit),
1092 "", got_object_commit_get_committer_time(commit), seed,
1093 repo, loose_obj_only, ncolored, nfound, ntrees,
1094 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1096 got_object_commit_close(commit);
1100 static const struct got_error *
1101 load_tag(int want_meta, struct got_object_idset *idset,
1102 struct got_object_idset *idset_exclude,
1103 struct got_object_id *id, struct got_repository *repo, uint32_t seed,
1104 int loose_obj_only, int *ncolored, int *nfound, int *ntrees,
1105 got_pack_progress_cb progress_cb, void *progress_arg,
1106 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1108 const struct got_error *err;
1109 struct got_tag_object *tag = NULL;
1111 if (got_object_idset_contains(idset, id) ||
1112 got_object_idset_contains(idset_exclude, id))
1115 if (loose_obj_only) {
1117 err = search_packidx(&is_packed, id, repo);
1120 if (is_packed && want_meta)
1124 err = got_object_open_as_tag(&tag, repo, id);
1128 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1129 id, "", GOT_OBJ_TYPE_TAG,
1130 got_object_tag_get_tagger_time(tag), seed, loose_obj_only, repo,
1131 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1135 switch (got_object_tag_get_object_type(tag)) {
1136 case GOT_OBJ_TYPE_COMMIT:
1137 err = load_commit(want_meta, idset, idset_exclude,
1138 got_object_tag_get_object_id(tag), repo, seed,
1139 loose_obj_only, ncolored, nfound, ntrees,
1140 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1142 case GOT_OBJ_TYPE_TREE:
1143 err = load_tree(want_meta, idset, idset_exclude,
1144 got_object_tag_get_object_id(tag), "",
1145 got_object_tag_get_tagger_time(tag), seed, repo,
1146 loose_obj_only, ncolored, nfound, ntrees,
1147 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1154 got_object_tag_close(tag);
1158 enum findtwixt_color {
1165 static const int findtwixt_colors[] = {
1172 static const struct got_error *
1173 paint_commit(struct got_object_qid *qid, int color)
1175 if (color < 0 || color >= nitems(findtwixt_colors))
1176 return got_error(GOT_ERR_RANGE);
1178 qid->data = (void *)&findtwixt_colors[color];
1182 static const struct got_error *
1183 queue_commit_id(struct got_object_id_queue *ids, struct got_object_id *id,
1184 int color, struct got_repository *repo)
1186 const struct got_error *err;
1187 struct got_object_qid *qid;
1189 err = got_object_qid_alloc(&qid, id);
1193 STAILQ_INSERT_TAIL(ids, qid, entry);
1194 return paint_commit(qid, color);
1197 struct append_id_arg {
1198 struct got_object_id **array;
1200 struct got_object_idset *drop;
1201 struct got_object_idset *skip;
1204 static const struct got_error *
1205 append_id(struct got_object_id *id, void *data, void *arg)
1207 struct append_id_arg *a = arg;
1209 if (got_object_idset_contains(a->skip, id) ||
1210 got_object_idset_contains(a->drop, id))
1213 a->array[++a->idx] = got_object_id_dup(id);
1214 if (a->array[a->idx] == NULL)
1215 return got_error_from_errno("got_object_id_dup");
1220 static const struct got_error *
1221 queue_commit_or_tag_id(struct got_object_id *id, int color,
1222 struct got_object_id_queue *ids, struct got_repository *repo)
1224 const struct got_error *err;
1225 struct got_tag_object *tag = NULL;
1228 err = got_object_get_type(&obj_type, repo, id);
1232 if (obj_type == GOT_OBJ_TYPE_TAG) {
1233 err = got_object_open_as_tag(&tag, repo, id);
1236 obj_type = got_object_tag_get_object_type(tag);
1237 id = got_object_tag_get_object_id(tag);
1240 if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1241 err = queue_commit_id(ids, id, color, repo);
1247 got_object_tag_close(tag);
1251 static const struct got_error *
1252 paint_commits(int *ncolored, struct got_object_id_queue *ids, int nids,
1253 struct got_object_idset *keep, struct got_object_idset *drop,
1254 struct got_object_idset *skip, struct got_repository *repo,
1255 got_pack_progress_cb progress_cb, void *progress_arg,
1256 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1258 const struct got_error *err = NULL;
1259 struct got_commit_object *commit = NULL;
1260 const struct got_object_id_queue *parents;
1261 struct got_object_qid *qid;
1262 int nqueued = nids, nskip = 0;
1264 while (!STAILQ_EMPTY(ids) && nskip != nqueued) {
1268 err = cancel_cb(cancel_arg);
1273 qid = STAILQ_FIRST(ids);
1274 STAILQ_REMOVE_HEAD(ids, entry);
1276 color = *((int *)qid->data);
1277 if (color == COLOR_SKIP)
1280 if (got_object_idset_contains(skip, &qid->id)) {
1281 got_object_qid_free(qid);
1287 if (got_object_idset_contains(keep, &qid->id)) {
1288 got_object_qid_free(qid);
1291 if (got_object_idset_contains(drop, &qid->id)) {
1292 err = paint_commit(qid, COLOR_SKIP);
1297 err = got_object_idset_add(keep, &qid->id, NULL);
1302 if (got_object_idset_contains(drop, &qid->id)) {
1303 got_object_qid_free(qid);
1306 if (got_object_idset_contains(keep, &qid->id)) {
1307 err = paint_commit(qid, COLOR_SKIP);
1312 err = got_object_idset_add(drop, &qid->id, NULL);
1317 if (!got_object_idset_contains(skip, &qid->id)) {
1318 err = got_object_idset_add(skip, &qid->id,
1325 /* should not happen */
1326 err = got_error_fmt(GOT_ERR_NOT_IMPL,
1327 "%s invalid commit color %d", __func__, color);
1331 err = report_progress(progress_cb, progress_arg, rl,
1332 *ncolored, 0, 0, 0L, 0, 0, 0, 0);
1337 err = got_object_open_as_commit(&commit, repo, &qid->id);
1341 parents = got_object_commit_get_parent_ids(commit);
1343 struct got_object_qid *pid;
1344 color = *((int *)qid->data);
1345 STAILQ_FOREACH(pid, parents, entry) {
1346 err = queue_commit_id(ids, &pid->id, color,
1351 if (color == COLOR_SKIP)
1356 got_object_commit_close(commit);
1358 got_object_qid_free(qid);
1362 got_object_commit_close(commit);
1366 static const struct got_error *
1367 findtwixt(struct got_object_id ***res, int *nres, int *ncolored,
1368 struct got_object_id **head, int nhead,
1369 struct got_object_id **tail, int ntail,
1370 struct got_repository *repo,
1371 got_pack_progress_cb progress_cb, void *progress_arg,
1372 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1374 const struct got_error *err = NULL;
1375 struct got_object_id_queue ids;
1376 struct got_object_idset *keep, *drop, *skip = NULL;
1384 keep = got_object_idset_alloc();
1386 return got_error_from_errno("got_object_idset_alloc");
1388 drop = got_object_idset_alloc();
1390 err = got_error_from_errno("got_object_idset_alloc");
1394 skip = got_object_idset_alloc();
1396 err = got_error_from_errno("got_object_idset_alloc");
1400 for (i = 0; i < nhead; i++) {
1401 struct got_object_id *id = head[i];
1404 err = queue_commit_or_tag_id(id, COLOR_KEEP, &ids, repo);
1409 for (i = 0; i < ntail; i++) {
1410 struct got_object_id *id = tail[i];
1413 err = queue_commit_or_tag_id(id, COLOR_DROP, &ids, repo);
1418 err = paint_commits(ncolored, &ids, nhead + ntail,
1419 keep, drop, skip, repo, progress_cb, progress_arg, rl,
1420 cancel_cb, cancel_arg);
1424 nkeep = got_object_idset_num_elements(keep);
1426 struct append_id_arg arg;
1427 arg.array = calloc(nkeep, sizeof(struct got_object_id *));
1428 if (arg.array == NULL) {
1429 err = got_error_from_errno("calloc");
1435 err = got_object_idset_for_each(keep, append_id, &arg);
1441 *nres = arg.idx + 1;
1444 got_object_idset_free(keep);
1445 got_object_idset_free(drop);
1447 got_object_idset_free(skip);
1448 got_object_id_queue_free(&ids);
1452 static const struct got_error *
1453 load_object_ids(int *ncolored, int *nfound, int *ntrees,
1454 struct got_object_idset *idset, struct got_object_id **theirs, int ntheirs,
1455 struct got_object_id **ours, int nours, struct got_repository *repo,
1456 uint32_t seed, int loose_obj_only, got_pack_progress_cb progress_cb,
1457 void *progress_arg, struct got_ratelimit *rl, got_cancel_cb cancel_cb,
1460 const struct got_error *err = NULL;
1461 struct got_object_id **ids = NULL;
1462 int i, nobj = 0, obj_type;
1463 struct got_object_idset *idset_exclude;
1465 idset_exclude = got_object_idset_alloc();
1466 if (idset_exclude == NULL)
1467 return got_error_from_errno("got_object_idset_alloc");
1473 err = findtwixt(&ids, &nobj, ncolored, ours, nours, theirs, ntheirs,
1474 repo, progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1478 for (i = 0; i < ntheirs; i++) {
1479 struct got_object_id *id = theirs[i];
1482 err = got_object_get_type(&obj_type, repo, id);
1485 if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1486 err = load_commit(0, idset, idset_exclude, id, repo,
1487 seed, loose_obj_only, ncolored, nfound, ntrees,
1488 progress_cb, progress_arg, rl,
1489 cancel_cb, cancel_arg);
1492 } else if (obj_type == GOT_OBJ_TYPE_TAG) {
1493 err = load_tag(0, idset, idset_exclude, id, repo,
1494 seed, loose_obj_only, ncolored, nfound, ntrees,
1495 progress_cb, progress_arg, rl,
1496 cancel_cb, cancel_arg);
1502 for (i = 0; i < nobj; i++) {
1503 err = load_commit(1, idset, idset_exclude, ids[i], repo,
1504 seed, loose_obj_only, ncolored, nfound, ntrees,
1505 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1510 for (i = 0; i < nours; i++) {
1511 struct got_object_id *id = ours[i];
1512 struct got_pack_meta *m;
1515 m = got_object_idset_get(idset, id);
1517 err = got_object_get_type(&obj_type, repo, id);
1521 obj_type = m->obj_type;
1522 if (obj_type != GOT_OBJ_TYPE_TAG)
1524 err = load_tag(1, idset, idset_exclude, id, repo,
1525 seed, loose_obj_only, ncolored, nfound, ntrees,
1526 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1531 for (i = 0; i < nobj; i++) {
1535 got_object_idset_free(idset_exclude);
1539 const struct got_error *
1540 hwrite(FILE *f, void *buf, off_t len, SHA1_CTX *ctx)
1544 SHA1Update(ctx, buf, len);
1545 n = fwrite(buf, 1, len, f);
1547 return got_ferror(f, GOT_ERR_IO);
1551 const struct got_error *
1552 hcopy(FILE *fsrc, FILE *fdst, off_t len, SHA1_CTX *ctx)
1554 unsigned char buf[65536];
1558 while (remain > 0) {
1559 size_t copylen = MIN(sizeof(buf), remain);
1560 n = fread(buf, 1, copylen, fsrc);
1562 return got_ferror(fsrc, GOT_ERR_IO);
1563 SHA1Update(ctx, buf, copylen);
1564 n = fwrite(buf, 1, copylen, fdst);
1566 return got_ferror(fdst, GOT_ERR_IO);
1573 const struct got_error *
1574 hcopy_mmap(uint8_t *src, off_t src_offset, size_t src_size,
1575 FILE *fdst, off_t len, SHA1_CTX *ctx)
1579 if (src_offset + len > src_size)
1580 return got_error(GOT_ERR_RANGE);
1582 SHA1Update(ctx, src + src_offset, len);
1583 n = fwrite(src + src_offset, 1, len, fdst);
1585 return got_ferror(fdst, GOT_ERR_IO);
1591 putbe32(char *b, uint32_t n)
1600 write_order_cmp(const void *pa, const void *pb)
1602 struct got_pack_meta *a, *b, *ahd, *bhd;
1604 a = *(struct got_pack_meta **)pa;
1605 b = *(struct got_pack_meta **)pb;
1606 ahd = (a->head == NULL) ? a : a->head;
1607 bhd = (b->head == NULL) ? b : b->head;
1608 if (bhd->mtime < ahd->mtime)
1610 if (bhd->mtime > ahd->mtime)
1616 if (a->nchain != b->nchain)
1617 return a->nchain - b->nchain;
1618 if (a->mtime < b->mtime)
1620 if (a->mtime > b->mtime)
1622 return got_object_id_cmp(&a->id, &b->id);
1626 reuse_write_order_cmp(const void *pa, const void *pb)
1628 struct got_pack_meta *a, *b;
1630 a = *(struct got_pack_meta **)pa;
1631 b = *(struct got_pack_meta **)pb;
1633 if (a->reused_delta_offset < b->reused_delta_offset)
1635 if (a->reused_delta_offset > b->reused_delta_offset)
1640 static const struct got_error *
1641 packhdr(int *hdrlen, char *hdr, size_t bufsize, int obj_type, size_t len)
1647 hdr[0] = obj_type << 4;
1648 hdr[0] |= len & 0xf;
1650 for (i = 1; len != 0; i++){
1652 return got_error(GOT_ERR_NO_SPACE);
1653 hdr[i - 1] |= GOT_DELTA_SIZE_MORE;
1654 hdr[i] = len & GOT_DELTA_SIZE_VAL_MASK;
1655 len >>= GOT_DELTA_SIZE_SHIFT;
1663 packoff(char *hdr, off_t off)
1668 rbuf[0] = off & GOT_DELTA_SIZE_VAL_MASK;
1669 for (i = 1; (off >>= GOT_DELTA_SIZE_SHIFT) != 0; i++) {
1670 rbuf[i] = (--off & GOT_DELTA_SIZE_VAL_MASK) |
1671 GOT_DELTA_SIZE_MORE;
1676 hdr[j++] = rbuf[--i];
1680 static const struct got_error *
1681 deltahdr(off_t *packfile_size, SHA1_CTX *ctx, FILE *packfile,
1682 struct got_pack_meta *m)
1684 const struct got_error *err;
1688 if (m->prev->off != 0) {
1689 err = packhdr(&nh, buf, sizeof(buf),
1690 GOT_OBJ_TYPE_OFFSET_DELTA, m->delta_len);
1693 nh += packoff(buf + nh, m->off - m->prev->off);
1694 err = hwrite(packfile, buf, nh, ctx);
1697 *packfile_size += nh;
1699 err = packhdr(&nh, buf, sizeof(buf),
1700 GOT_OBJ_TYPE_REF_DELTA, m->delta_len);
1703 err = hwrite(packfile, buf, nh, ctx);
1706 *packfile_size += nh;
1707 err = hwrite(packfile, m->prev->id.sha1,
1708 sizeof(m->prev->id.sha1), ctx);
1711 *packfile_size += sizeof(m->prev->id.sha1);
1717 static const struct got_error *
1718 write_packed_object(off_t *packfile_size, FILE *packfile,
1719 FILE *delta_cache, uint8_t *delta_cache_map, size_t delta_cache_size,
1720 struct got_pack_meta *m, int *outfd, SHA1_CTX *ctx,
1721 struct got_repository *repo)
1723 const struct got_error *err = NULL;
1724 struct got_deflate_checksum csum;
1727 struct got_raw_object *raw = NULL;
1730 csum.output_sha1 = ctx;
1731 csum.output_crc = NULL;
1733 m->off = ftello(packfile);
1734 if (m->delta_len == 0) {
1735 err = got_object_raw_open(&raw, outfd, repo, &m->id);
1738 err = packhdr(&nh, buf, sizeof(buf),
1739 m->obj_type, raw->size);
1742 err = hwrite(packfile, buf, nh, ctx);
1745 *packfile_size += nh;
1746 if (raw->f == NULL) {
1747 err = got_deflate_to_file_mmap(&outlen,
1748 raw->data + raw->hdrlen, 0, raw->size,
1753 if (fseeko(raw->f, raw->hdrlen, SEEK_SET)
1755 err = got_error_from_errno("fseeko");
1758 err = got_deflate_to_file(&outlen, raw->f,
1759 raw->size, packfile, &csum);
1763 *packfile_size += outlen;
1764 got_object_raw_close(raw);
1766 } else if (m->delta_buf) {
1767 err = deltahdr(packfile_size, ctx, packfile, m);
1770 err = hwrite(packfile, m->delta_buf,
1771 m->delta_compressed_len, ctx);
1774 *packfile_size += m->delta_compressed_len;
1776 m->delta_buf = NULL;
1777 } else if (delta_cache_map) {
1778 err = deltahdr(packfile_size, ctx, packfile, m);
1781 err = hcopy_mmap(delta_cache_map, m->delta_offset,
1782 delta_cache_size, packfile, m->delta_compressed_len,
1786 *packfile_size += m->delta_compressed_len;
1788 if (fseeko(delta_cache, m->delta_offset, SEEK_SET)
1790 err = got_error_from_errno("fseeko");
1793 err = deltahdr(packfile_size, ctx, packfile, m);
1796 err = hcopy(delta_cache, packfile,
1797 m->delta_compressed_len, ctx);
1800 *packfile_size += m->delta_compressed_len;
1804 got_object_raw_close(raw);
1808 static const struct got_error *
1809 genpack(uint8_t *pack_sha1, FILE *packfile, FILE *delta_cache,
1810 struct got_pack_meta **deltify, int ndeltify,
1811 struct got_pack_meta **reuse, int nreuse,
1812 int ncolored, int nfound, int ntrees, int nours,
1813 struct got_repository *repo,
1814 got_pack_progress_cb progress_cb, void *progress_arg,
1815 struct got_ratelimit *rl,
1816 got_cancel_cb cancel_cb, void *cancel_arg)
1818 const struct got_error *err = NULL;
1821 struct got_pack_meta *m;
1824 off_t packfile_size = 0;
1826 int delta_cache_fd = -1;
1827 uint8_t *delta_cache_map = NULL;
1828 size_t delta_cache_size = 0;
1832 #ifndef GOT_PACK_NO_MMAP
1833 delta_cache_fd = dup(fileno(delta_cache));
1834 if (delta_cache_fd != -1) {
1836 if (fstat(delta_cache_fd, &sb) == -1) {
1837 err = got_error_from_errno("fstat");
1840 if (sb.st_size > 0 && sb.st_size <= SIZE_MAX) {
1841 delta_cache_map = mmap(NULL, sb.st_size,
1842 PROT_READ, MAP_PRIVATE, delta_cache_fd, 0);
1843 if (delta_cache_map == MAP_FAILED) {
1844 if (errno != ENOMEM) {
1845 err = got_error_from_errno("mmap");
1848 delta_cache_map = NULL; /* fallback on stdio */
1850 delta_cache_size = (size_t)sb.st_size;
1854 err = hwrite(packfile, "PACK", 4, &ctx);
1857 putbe32(buf, GOT_PACKFILE_VERSION);
1858 err = hwrite(packfile, buf, 4, &ctx);
1861 putbe32(buf, ndeltify + nreuse);
1862 err = hwrite(packfile, buf, 4, &ctx);
1866 qsort(deltify, ndeltify, sizeof(struct got_pack_meta *),
1868 for (i = 0; i < ndeltify; i++) {
1869 err = report_progress(progress_cb, progress_arg, rl,
1870 ncolored, nfound, ntrees, packfile_size, nours,
1871 ndeltify + nreuse, ndeltify + nreuse, i);
1875 err = write_packed_object(&packfile_size, packfile,
1876 delta_cache, delta_cache_map, delta_cache_size,
1877 m, &outfd, &ctx, repo);
1882 qsort(reuse, nreuse, sizeof(struct got_pack_meta *),
1883 reuse_write_order_cmp);
1884 for (i = 0; i < nreuse; i++) {
1885 err = report_progress(progress_cb, progress_arg, rl,
1886 ncolored, nfound, ntrees, packfile_size, nours,
1887 ndeltify + nreuse, ndeltify + nreuse, ndeltify + i);
1891 err = write_packed_object(&packfile_size, packfile,
1892 delta_cache, delta_cache_map, delta_cache_size,
1893 m, &outfd, &ctx, repo);
1898 SHA1Final(pack_sha1, &ctx);
1899 n = fwrite(pack_sha1, 1, SHA1_DIGEST_LENGTH, packfile);
1900 if (n != SHA1_DIGEST_LENGTH)
1901 err = got_ferror(packfile, GOT_ERR_IO);
1902 packfile_size += SHA1_DIGEST_LENGTH;
1903 packfile_size += sizeof(struct got_packfile_hdr);
1905 err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1906 packfile_size, nours, ndeltify + nreuse,
1907 ndeltify + nreuse, ndeltify + nreuse);
1912 if (outfd != -1 && close(outfd) == -1 && err == NULL)
1913 err = got_error_from_errno("close");
1914 if (delta_cache_map && munmap(delta_cache_map, delta_cache_size) == -1)
1915 err = got_error_from_errno("munmap");
1916 if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
1917 err = got_error_from_errno("close");
1921 static const struct got_error *
1922 add_meta_idset_cb(struct got_object_id *id, void *data, void *arg)
1924 struct got_pack_meta *m = data;
1925 struct got_pack_metavec *v = arg;
1927 if (m->reused_delta_offset != 0)
1930 return add_meta(m, v);
1933 const struct got_error *
1934 got_pack_create(uint8_t *packsha1, FILE *packfile,
1935 struct got_object_id **theirs, int ntheirs,
1936 struct got_object_id **ours, int nours,
1937 struct got_repository *repo, int loose_obj_only, int allow_empty,
1938 got_pack_progress_cb progress_cb, void *progress_arg,
1939 got_cancel_cb cancel_cb, void *cancel_arg)
1941 const struct got_error *err;
1942 int delta_cache_fd = -1;
1943 FILE *delta_cache = NULL;
1944 struct got_object_idset *idset;
1945 struct got_ratelimit rl;
1946 struct got_pack_metavec deltify, reuse;
1947 int ncolored = 0, nfound = 0, ntrees = 0;
1951 seed = arc4random();
1953 memset(&deltify, 0, sizeof(deltify));
1954 memset(&reuse, 0, sizeof(reuse));
1956 got_ratelimit_init(&rl, 0, 500);
1958 idset = got_object_idset_alloc();
1960 return got_error_from_errno("got_object_idset_alloc");
1962 err = load_object_ids(&ncolored, &nfound, &ntrees, idset, theirs,
1963 ntheirs, ours, nours, repo, seed, loose_obj_only,
1964 progress_cb, progress_arg, &rl, cancel_cb, cancel_arg);
1969 err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1970 0L, nours, got_object_idset_num_elements(idset), 0, 0);
1975 if (got_object_idset_num_elements(idset) == 0 && !allow_empty) {
1976 err = got_error(GOT_ERR_CANNOT_PACK);
1980 delta_cache_fd = got_opentempfd();
1981 if (delta_cache_fd == -1) {
1982 err = got_error_from_errno("got_opentemp");
1987 reuse.meta = calloc(reuse.metasz,
1988 sizeof(struct got_pack_meta *));
1989 if (reuse.meta == NULL) {
1990 err = got_error_from_errno("calloc");
1994 err = search_deltas(&reuse, idset, delta_cache_fd, ncolored, nfound,
1995 ntrees, nours, repo, progress_cb, progress_arg, &rl,
1996 cancel_cb, cancel_arg);
2000 delta_cache = fdopen(delta_cache_fd, "a+");
2001 if (delta_cache == NULL) {
2002 err = got_error_from_errno("fdopen");
2005 delta_cache_fd = -1;
2007 if (fseeko(delta_cache, 0L, SEEK_END) == -1) {
2008 err = got_error_from_errno("fseeko");
2012 ndeltify = got_object_idset_num_elements(idset) - reuse.nmeta;
2014 deltify.meta = calloc(ndeltify, sizeof(struct got_pack_meta *));
2015 if (deltify.meta == NULL) {
2016 err = got_error_from_errno("calloc");
2019 deltify.metasz = ndeltify;
2021 err = got_object_idset_for_each(idset, add_meta_idset_cb,
2025 if (deltify.nmeta > 0) {
2026 err = pick_deltas(deltify.meta, deltify.nmeta,
2027 ncolored, nfound, ntrees, nours, reuse.nmeta,
2028 delta_cache, repo, progress_cb, progress_arg, &rl,
2029 cancel_cb, cancel_arg);
2035 if (fflush(delta_cache) == EOF) {
2036 err = got_error_from_errno("fflush");
2039 err = genpack(packsha1, packfile, delta_cache, deltify.meta,
2040 deltify.nmeta, reuse.meta, reuse.nmeta, ncolored, nfound, ntrees,
2041 nours, repo, progress_cb, progress_arg, &rl,
2042 cancel_cb, cancel_arg);
2046 free_nmeta(deltify.meta, deltify.nmeta);
2047 free_nmeta(reuse.meta, reuse.nmeta);
2048 got_object_idset_free(idset);
2049 if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
2050 err = got_error_from_errno("close");
2051 if (delta_cache && fclose(delta_cache) == EOF && err == NULL)
2052 err = got_error_from_errno("fclose");