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_privsep.h"
55 #include "got_lib_repository.h"
56 #include "got_lib_ratelimit.h"
57 #include "got_lib_inflate.h"
59 #include "murmurhash2.h"
62 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
66 #define MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
70 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
73 struct got_pack_meta {
74 struct got_object_id id;
80 /* The best delta we picked */
81 struct got_pack_meta *head;
82 struct got_pack_meta *prev;
83 unsigned char *delta_buf; /* if encoded in memory (compressed) */
84 off_t delta_offset; /* offset in delta cache file (compressed) */
85 off_t delta_len; /* encoded delta length */
86 off_t delta_compressed_len; /* encoded+compressed delta length */
89 int have_reused_delta;
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)
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), 0xd70af26a);
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;
140 free_nmeta(struct got_pack_meta **meta, int nmeta)
144 for (i = 0; i < nmeta; i++)
150 delta_order_cmp(const void *pa, const void *pb)
152 struct got_pack_meta *a, *b;
154 a = *(struct got_pack_meta **)pa;
155 b = *(struct got_pack_meta **)pb;
157 if (a->obj_type != b->obj_type)
158 return a->obj_type - b->obj_type;
159 if (a->path_hash < b->path_hash)
161 if (a->path_hash > b->path_hash)
163 if (a->mtime < b->mtime)
165 if (a->mtime > b->mtime)
167 return got_object_id_cmp(&a->id, &b->id);
171 delta_size(struct got_delta_instruction *deltas, int ndeltas)
175 for (i = 0; i < ndeltas; i++) {
177 size += GOT_DELTA_SIZE_SHIFT;
179 size += deltas[i].len + 1;
184 static const struct got_error *
185 append(unsigned char **p, size_t *len, off_t *sz, void *seg, int nseg)
189 if (*len + nseg >= *sz) {
190 while (*len + nseg >= *sz)
192 n = realloc(*p, *sz);
194 return got_error_from_errno("realloc");
197 memcpy(*p + *len, seg, nseg);
202 static const struct got_error *
203 encode_delta_in_mem(struct got_pack_meta *m, struct got_raw_object *o,
204 struct got_delta_instruction *deltas, int ndeltas,
205 off_t delta_size, off_t base_size)
207 const struct got_error *err;
208 unsigned char buf[16], *bp;
210 size_t len = 0, compressed_len;
211 off_t bufsize = delta_size;
213 struct got_delta_instruction *d;
216 delta_buf = malloc(bufsize);
217 if (delta_buf == NULL)
218 return got_error_from_errno("malloc");
220 /* base object size */
221 buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
222 n = base_size >> GOT_DELTA_SIZE_SHIFT;
223 for (i = 1; n > 0; i++) {
224 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
225 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
226 n >>= GOT_DELTA_SIZE_SHIFT;
228 err = append(&delta_buf, &len, &bufsize, buf, i);
232 /* target object size */
233 buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
234 n = o->size >> GOT_DELTA_SIZE_SHIFT;
235 for (i = 1; n > 0; i++) {
236 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
237 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
238 n >>= GOT_DELTA_SIZE_SHIFT;
240 err = append(&delta_buf, &len, &bufsize, buf, i);
244 for (j = 0; j < ndeltas; j++) {
249 buf[0] = GOT_DELTA_BASE_COPY;
250 for (i = 0; i < 4; i++) {
251 /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
260 if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
261 /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
262 for (i = 0; i < 3 && n > 0; i++) {
263 buf[0] |= 1 << (i + 4);
268 err = append(&delta_buf, &len, &bufsize,
272 } else if (o->f == NULL) {
274 while (n != d->len) {
275 buf[0] = (d->len - n < 127) ? d->len - n : 127;
276 err = append(&delta_buf, &len, &bufsize,
280 err = append(&delta_buf, &len, &bufsize,
281 o->data + o->hdrlen + d->offset + n,
290 if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1) {
291 err = got_error_from_errno("fseeko");
295 while (n != d->len) {
296 buf[0] = (d->len - n < 127) ? d->len - n : 127;
297 err = append(&delta_buf, &len, &bufsize,
301 r = fread(content, 1, buf[0], o->f);
303 err = got_ferror(o->f, GOT_ERR_IO);
306 err = append(&delta_buf, &len, &bufsize,
315 err = got_deflate_to_mem_mmap(&m->delta_buf, &compressed_len,
316 NULL, NULL, delta_buf, 0, len);
321 m->delta_compressed_len = compressed_len;
327 static const struct got_error *
328 encode_delta(struct got_pack_meta *m, struct got_raw_object *o,
329 struct got_delta_instruction *deltas, int ndeltas,
330 off_t base_size, FILE *f)
332 const struct got_error *err;
333 unsigned char buf[16], *bp;
336 struct got_deflate_buf zb;
337 struct got_delta_instruction *d;
338 off_t delta_len = 0, compressed_len = 0;
340 err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
344 /* base object size */
345 buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
346 n = base_size >> GOT_DELTA_SIZE_SHIFT;
347 for (i = 1; n > 0; i++) {
348 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
349 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
350 n >>= GOT_DELTA_SIZE_SHIFT;
353 err = got_deflate_append_to_file_mmap(&zb, &compressed_len,
359 /* target object size */
360 buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
361 n = o->size >> GOT_DELTA_SIZE_SHIFT;
362 for (i = 1; n > 0; i++) {
363 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
364 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
365 n >>= GOT_DELTA_SIZE_SHIFT;
368 err = got_deflate_append_to_file_mmap(&zb, &compressed_len,
374 for (j = 0; j < ndeltas; j++) {
379 buf[0] = GOT_DELTA_BASE_COPY;
380 for (i = 0; i < 4; i++) {
381 /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
389 if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
390 /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
391 for (i = 0; i < 3 && n > 0; i++) {
392 buf[0] |= 1 << (i + 4);
397 err = got_deflate_append_to_file_mmap(&zb,
398 &compressed_len, buf, 0, bp - buf, f, NULL);
401 delta_len += (bp - buf);
402 } else if (o->f == NULL) {
404 while (n != d->len) {
405 buf[0] = (d->len - n < 127) ? d->len - n : 127;
406 err = got_deflate_append_to_file_mmap(&zb,
407 &compressed_len, buf, 0, 1, f, NULL);
411 err = got_deflate_append_to_file_mmap(&zb,
413 o->data + o->hdrlen + d->offset + n, 0,
423 if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1) {
424 err = got_error_from_errno("fseeko");
428 while (n != d->len) {
429 buf[0] = (d->len - n < 127) ? d->len - n : 127;
430 err = got_deflate_append_to_file_mmap(&zb,
431 &compressed_len, buf, 0, 1, f, NULL);
435 r = fread(content, 1, buf[0], o->f);
437 err = got_ferror(o->f, GOT_ERR_IO);
440 err = got_deflate_append_to_file_mmap(&zb,
441 &compressed_len, content, 0, buf[0], f,
451 err = got_deflate_flush(&zb, f, NULL, &compressed_len);
456 if (compressed_len != ftello(f) - m->delta_offset) {
457 err = got_error(GOT_ERR_COMPRESSION);
461 m->delta_len = delta_len;
462 m->delta_compressed_len = compressed_len;
464 got_deflate_end(&zb);
468 static const struct got_error *
469 report_progress(got_pack_progress_cb progress_cb, void *progress_arg,
470 struct got_ratelimit *rl, int ncolored, int nfound, int ntrees,
471 off_t packfile_size, int ncommits, int nobj_total, int obj_deltify,
474 const struct got_error *err;
477 if (progress_cb == NULL)
480 err = got_ratelimit_check(&elapsed, rl);
484 return progress_cb(progress_arg, ncolored, nfound, ntrees,
485 packfile_size, ncommits, nobj_total, obj_deltify, nobj_written);
488 static const struct got_error *
489 add_meta(struct got_pack_meta *m, struct got_pack_metavec *v)
491 if (v->nmeta == v->metasz){
492 size_t newsize = 2 * v->metasz;
493 struct got_pack_meta **new;
494 new = reallocarray(v->meta, newsize, sizeof(*new));
496 return got_error_from_errno("reallocarray");
501 v->meta[v->nmeta++] = m;
505 static const struct got_error *
506 find_pack_for_reuse(struct got_packidx **best_packidx,
507 struct got_repository *repo)
509 const struct got_error *err = NULL;
510 struct got_pathlist_entry *pe;
511 const char *best_packidx_path = NULL;
514 *best_packidx = NULL;
516 TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
517 const char *path_packidx = pe->path;
518 struct got_packidx *packidx;
521 err = got_repo_get_packidx(&packidx, path_packidx, repo);
525 nobj = be32toh(packidx->hdr.fanout_table[0xff]);
526 if (nobj > nobj_max) {
527 best_packidx_path = path_packidx;
532 if (best_packidx_path) {
533 err = got_repo_get_packidx(best_packidx, best_packidx_path,
541 struct imsgbuf *ibuf;
542 struct got_object_id *ids[GOT_IMSG_OBJ_ID_LIST_MAX_NIDS];
546 static const struct got_error *
547 send_id(struct got_object_id *id, void *data, void *arg)
549 const struct got_error *err = NULL;
550 struct send_id_arg *a = arg;
552 a->ids[a->nids++] = id;
554 if (a->nids >= GOT_IMSG_OBJ_ID_LIST_MAX_NIDS) {
555 err = got_privsep_send_object_idlist(a->ibuf, a->ids, a->nids);
564 static const struct got_error *
565 recv_reused_delta(struct got_imsg_reused_delta *delta,
566 struct got_object_idset *idset, struct got_pack_metavec *v)
568 struct got_pack_meta *m, *base;
570 if (delta->delta_offset + delta->delta_size < delta->delta_offset ||
571 delta->delta_offset +
572 delta->delta_compressed_size < delta->delta_offset)
573 return got_error(GOT_ERR_BAD_PACKFILE);
575 m = got_object_idset_get(idset, &delta->id);
577 return got_error(GOT_ERR_NO_OBJ);
579 base = got_object_idset_get(idset, &delta->base_id);
581 return got_error(GOT_ERR_NO_OBJ);
583 m->delta_len = delta->delta_size;
584 m->delta_compressed_len = delta->delta_compressed_size;
585 m->delta_offset = delta->delta_out_offset;
587 m->size = delta->result_size;
588 m->have_reused_delta = 1;
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 = 25 * GOT_DELTA_RESULT_SIZE_CACHED_MAX;
687 qsort(meta, nmeta, sizeof(struct got_pack_meta *), delta_order_cmp);
688 for (i = 0; i < nmeta; i++) {
690 err = (*cancel_cb)(cancel_arg);
694 err = report_progress(progress_cb, progress_arg, rl,
695 ncolored, nfound, ntrees, 0L, ncommits, nreused + nmeta,
701 if (m->obj_type == GOT_OBJ_TYPE_COMMIT ||
702 m->obj_type == GOT_OBJ_TYPE_TAG)
705 err = got_object_raw_open(&raw, &outfd, repo, &m->id);
710 if (raw->f == NULL) {
711 err = got_deltify_init_mem(&m->dtab, raw->data,
712 raw->hdrlen, raw->size + raw->hdrlen);
714 err = got_deltify_init(&m->dtab, raw->f, raw->hdrlen,
715 raw->size + raw->hdrlen);
720 if (i > max_base_candidates) {
721 struct got_pack_meta *n = NULL;
722 n = meta[i - (max_base_candidates + 1)];
723 got_deltify_free(n->dtab);
727 best_size = raw->size;
729 for (j = MAX(0, i - max_base_candidates); j < i; j++) {
731 err = (*cancel_cb)(cancel_arg);
736 /* long chains make unpacking slow, avoid such bases */
737 if (base->nchain >= 128 ||
738 base->obj_type != m->obj_type)
741 err = got_object_raw_open(&base_raw, &outfd, repo,
746 if (raw->f == NULL && base_raw->f == NULL) {
747 err = got_deltify_mem_mem(&deltas, &ndeltas,
748 raw->data, raw->hdrlen,
749 raw->size + raw->hdrlen,
750 base->dtab, base_raw->data,
752 base_raw->size + base_raw->hdrlen);
753 } else if (raw->f == NULL) {
754 err = got_deltify_mem_file(&deltas, &ndeltas,
755 raw->data, raw->hdrlen,
756 raw->size + raw->hdrlen,
757 base->dtab, base_raw->f,
759 base_raw->size + base_raw->hdrlen);
760 } else if (base_raw->f == NULL) {
761 err = got_deltify_file_mem(&deltas, &ndeltas,
763 raw->size + raw->hdrlen,
764 base->dtab, base_raw->data,
766 base_raw->size + base_raw->hdrlen);
768 err = got_deltify(&deltas, &ndeltas,
770 raw->size + raw->hdrlen,
771 base->dtab, base_raw->f, base_raw->hdrlen,
772 base_raw->size + base_raw->hdrlen);
774 got_object_raw_close(base_raw);
779 size = delta_size(deltas, ndeltas);
780 if (size + 32 < best_size){
782 * if we already picked a best delta,
787 best_deltas = deltas;
788 best_ndeltas = ndeltas;
790 m->nchain = base->nchain + 1;
792 m->head = base->head;
802 if (best_ndeltas > 0) {
803 if (best_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX &&
804 delta_memsize + best_size <= max_delta_memsize) {
805 delta_memsize += best_size;
806 err = encode_delta_in_mem(m, raw, best_deltas,
807 best_ndeltas, best_size, m->prev->size);
809 m->delta_offset = ftello(delta_cache);
810 err = encode_delta(m, raw, best_deltas,
811 best_ndeltas, m->prev->size, delta_cache);
820 got_object_raw_close(raw);
824 for (i = MAX(0, nmeta - max_base_candidates); i < nmeta; i++) {
825 got_deltify_free(meta[i]->dtab);
826 meta[i]->dtab = NULL;
829 got_object_raw_close(raw);
831 got_object_raw_close(base_raw);
832 if (outfd != -1 && close(outfd) == -1 && err == NULL)
833 err = got_error_from_errno("close");
839 static const struct got_error *
840 search_packidx(int *found, struct got_object_id *id,
841 struct got_repository *repo)
843 const struct got_error *err = NULL;
844 struct got_packidx *packidx = NULL;
849 err = got_repo_search_packidx(&packidx, &idx, repo, id);
851 *found = 1; /* object is already packed */
852 else if (err->code == GOT_ERR_NO_OBJ)
857 static const struct got_error *
858 add_object(int want_meta, struct got_object_idset *idset,
859 struct got_object_id *id, const char *path, int obj_type,
860 time_t mtime, int loose_obj_only, struct got_repository *repo,
861 int *ncolored, int *nfound, int *ntrees,
862 got_pack_progress_cb progress_cb, void *progress_arg,
863 struct got_ratelimit *rl)
865 const struct got_error *err;
866 struct got_pack_meta *m = NULL;
868 if (loose_obj_only) {
870 err = search_packidx(&is_packed, id, repo);
873 if (is_packed && want_meta)
878 err = alloc_meta(&m, id, path, obj_type, mtime);
883 err = report_progress(progress_cb, progress_arg, rl,
884 *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
892 err = got_object_idset_add(idset, id, m);
900 static const struct got_error *
901 load_tree_entries(struct got_object_id_queue *ids, int want_meta,
902 struct got_object_idset *idset, struct got_object_idset *idset_exclude,
903 struct got_object_id *tree_id,
904 const char *dpath, time_t mtime, struct got_repository *repo,
905 int loose_obj_only, int *ncolored, int *nfound, int *ntrees,
906 got_pack_progress_cb progress_cb, void *progress_arg,
907 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
909 const struct got_error *err;
910 struct got_tree_object *tree;
914 err = got_object_open_as_tree(&tree, repo, tree_id);
919 err = report_progress(progress_cb, progress_arg, rl,
920 *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
924 for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
925 struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
926 struct got_object_id *id = got_tree_entry_get_id(e);
927 mode_t mode = got_tree_entry_get_mode(e);
930 err = (*cancel_cb)(cancel_arg);
935 if (got_object_tree_entry_is_submodule(e) ||
936 got_object_idset_contains(idset, id) ||
937 got_object_idset_contains(idset_exclude, id))
940 if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
941 got_tree_entry_get_name(e)) == -1) {
942 err = got_error_from_errno("asprintf");
947 struct got_object_qid *qid;
948 err = got_object_qid_alloc(&qid, id);
953 STAILQ_INSERT_TAIL(ids, qid, entry);
954 } else if (S_ISREG(mode) || S_ISLNK(mode)) {
955 err = add_object(want_meta,
956 want_meta ? idset : idset_exclude, id, p,
957 GOT_OBJ_TYPE_BLOB, mtime, loose_obj_only, repo,
958 ncolored, nfound, ntrees,
959 progress_cb, progress_arg, rl);
970 got_object_tree_close(tree);
975 static const struct got_error *
976 load_tree(int want_meta, struct got_object_idset *idset,
977 struct got_object_idset *idset_exclude,
978 struct got_object_id *tree_id, const char *dpath, time_t mtime,
979 struct got_repository *repo, int loose_obj_only,
980 int *ncolored, int *nfound, int *ntrees,
981 got_pack_progress_cb progress_cb, void *progress_arg,
982 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
984 const struct got_error *err = NULL;
985 struct got_object_id_queue tree_ids;
986 struct got_object_qid *qid;
988 if (got_object_idset_contains(idset, tree_id) ||
989 got_object_idset_contains(idset_exclude, tree_id))
992 err = got_object_qid_alloc(&qid, tree_id);
995 qid->data = strdup(dpath);
996 if (qid->data == NULL) {
997 err = got_error_from_errno("strdup");
998 got_object_qid_free(qid);
1002 STAILQ_INIT(&tree_ids);
1003 STAILQ_INSERT_TAIL(&tree_ids, qid, entry);
1005 while (!STAILQ_EMPTY(&tree_ids)) {
1008 err = (*cancel_cb)(cancel_arg);
1013 qid = STAILQ_FIRST(&tree_ids);
1014 STAILQ_REMOVE_HEAD(&tree_ids, entry);
1017 if (got_object_idset_contains(idset, &qid->id) ||
1018 got_object_idset_contains(idset_exclude, &qid->id)) {
1020 got_object_qid_free(qid);
1024 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1025 &qid->id, path, GOT_OBJ_TYPE_TREE,
1026 mtime, loose_obj_only, repo,
1027 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1030 got_object_qid_free(qid);
1034 err = load_tree_entries(&tree_ids, want_meta, idset,
1035 idset_exclude, &qid->id,
1036 path, mtime, repo, loose_obj_only, ncolored, nfound,
1037 ntrees, progress_cb, progress_arg, rl,
1038 cancel_cb, cancel_arg);
1040 got_object_qid_free(qid);
1045 STAILQ_FOREACH(qid, &tree_ids, entry)
1047 got_object_id_queue_free(&tree_ids);
1051 static const struct got_error *
1052 load_commit(int want_meta, struct got_object_idset *idset,
1053 struct got_object_idset *idset_exclude,
1054 struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
1055 int *ncolored, int *nfound, int *ntrees,
1056 got_pack_progress_cb progress_cb, void *progress_arg,
1057 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1059 const struct got_error *err;
1060 struct got_commit_object *commit;
1062 if (got_object_idset_contains(idset, id) ||
1063 got_object_idset_contains(idset_exclude, id))
1066 if (loose_obj_only) {
1068 err = search_packidx(&is_packed, id, repo);
1071 if (is_packed && want_meta)
1075 err = got_object_open_as_commit(&commit, repo, id);
1079 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1080 id, "", GOT_OBJ_TYPE_COMMIT,
1081 got_object_commit_get_committer_time(commit),
1082 loose_obj_only, repo,
1083 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1087 err = load_tree(want_meta, idset, idset_exclude,
1088 got_object_commit_get_tree_id(commit),
1089 "", got_object_commit_get_committer_time(commit),
1090 repo, loose_obj_only, ncolored, nfound, ntrees,
1091 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1093 got_object_commit_close(commit);
1097 static const struct got_error *
1098 load_tag(int want_meta, struct got_object_idset *idset,
1099 struct got_object_idset *idset_exclude,
1100 struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
1101 int *ncolored, int *nfound, int *ntrees,
1102 got_pack_progress_cb progress_cb, void *progress_arg,
1103 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1105 const struct got_error *err;
1106 struct got_tag_object *tag = NULL;
1108 if (got_object_idset_contains(idset, id) ||
1109 got_object_idset_contains(idset_exclude, id))
1112 if (loose_obj_only) {
1114 err = search_packidx(&is_packed, id, repo);
1117 if (is_packed && want_meta)
1121 err = got_object_open_as_tag(&tag, repo, id);
1125 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1126 id, "", GOT_OBJ_TYPE_TAG,
1127 got_object_tag_get_tagger_time(tag), loose_obj_only, repo,
1128 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1132 switch (got_object_tag_get_object_type(tag)) {
1133 case GOT_OBJ_TYPE_COMMIT:
1134 err = load_commit(want_meta, idset, idset_exclude,
1135 got_object_tag_get_object_id(tag), repo, loose_obj_only,
1136 ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1137 cancel_cb, cancel_arg);
1139 case GOT_OBJ_TYPE_TREE:
1140 err = load_tree(want_meta, idset, idset_exclude,
1141 got_object_tag_get_object_id(tag), "",
1142 got_object_tag_get_tagger_time(tag), repo, loose_obj_only,
1143 ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1144 cancel_cb, cancel_arg);
1151 got_object_tag_close(tag);
1155 enum findtwixt_color {
1162 static const int findtwixt_colors[] = {
1169 static const struct got_error *
1170 paint_commit(struct got_object_qid *qid, int color)
1172 if (color < 0 || color >= nitems(findtwixt_colors))
1173 return got_error(GOT_ERR_RANGE);
1175 qid->data = (void *)&findtwixt_colors[color];
1179 static const struct got_error *
1180 queue_commit_id(struct got_object_id_queue *ids, struct got_object_id *id,
1181 int color, struct got_repository *repo)
1183 const struct got_error *err;
1184 struct got_object_qid *qid;
1186 err = got_object_qid_alloc(&qid, id);
1190 STAILQ_INSERT_TAIL(ids, qid, entry);
1191 return paint_commit(qid, color);
1194 struct append_id_arg {
1195 struct got_object_id **array;
1197 struct got_object_idset *drop;
1198 struct got_object_idset *skip;
1201 static const struct got_error *
1202 append_id(struct got_object_id *id, void *data, void *arg)
1204 struct append_id_arg *a = arg;
1206 if (got_object_idset_contains(a->skip, id) ||
1207 got_object_idset_contains(a->drop, id))
1210 a->array[++a->idx] = got_object_id_dup(id);
1211 if (a->array[a->idx] == NULL)
1212 return got_error_from_errno("got_object_id_dup");
1217 static const struct got_error *
1218 queue_commit_or_tag_id(struct got_object_id *id, int color,
1219 struct got_object_id_queue *ids, struct got_repository *repo)
1221 const struct got_error *err;
1222 struct got_tag_object *tag = NULL;
1225 err = got_object_get_type(&obj_type, repo, id);
1229 if (obj_type == GOT_OBJ_TYPE_TAG) {
1230 err = got_object_open_as_tag(&tag, repo, id);
1233 obj_type = got_object_tag_get_object_type(tag);
1234 id = got_object_tag_get_object_id(tag);
1237 if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1238 err = queue_commit_id(ids, id, color, repo);
1244 got_object_tag_close(tag);
1248 static const struct got_error *
1249 paint_commits(int *ncolored, struct got_object_id_queue *ids, int nids,
1250 struct got_object_idset *keep, struct got_object_idset *drop,
1251 struct got_object_idset *skip, struct got_repository *repo,
1252 got_pack_progress_cb progress_cb, void *progress_arg,
1253 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1255 const struct got_error *err = NULL;
1256 struct got_commit_object *commit = NULL;
1257 const struct got_object_id_queue *parents;
1258 struct got_object_qid *qid;
1259 int nqueued = nids, nskip = 0;
1261 while (!STAILQ_EMPTY(ids) && nskip != nqueued) {
1265 err = cancel_cb(cancel_arg);
1270 qid = STAILQ_FIRST(ids);
1271 STAILQ_REMOVE_HEAD(ids, entry);
1273 color = *((int *)qid->data);
1274 if (color == COLOR_SKIP)
1277 if (got_object_idset_contains(skip, &qid->id)) {
1278 got_object_qid_free(qid);
1284 if (got_object_idset_contains(keep, &qid->id)) {
1285 got_object_qid_free(qid);
1288 if (got_object_idset_contains(drop, &qid->id)) {
1289 err = paint_commit(qid, COLOR_SKIP);
1295 err = got_object_idset_add(keep, &qid->id, NULL);
1300 if (got_object_idset_contains(drop, &qid->id)) {
1301 got_object_qid_free(qid);
1304 if (got_object_idset_contains(keep, &qid->id)) {
1305 err = paint_commit(qid, COLOR_SKIP);
1311 err = got_object_idset_add(drop, &qid->id, NULL);
1316 if (!got_object_idset_contains(skip, &qid->id)) {
1317 err = got_object_idset_add(skip, &qid->id,
1324 /* should not happen */
1325 err = got_error_fmt(GOT_ERR_NOT_IMPL,
1326 "%s invalid commit color %d", __func__, color);
1330 err = report_progress(progress_cb, progress_arg, rl,
1331 *ncolored, 0, 0, 0L, 0, 0, 0, 0);
1336 err = got_object_open_as_commit(&commit, repo, &qid->id);
1340 parents = got_object_commit_get_parent_ids(commit);
1342 struct got_object_qid *pid;
1343 color = *((int *)qid->data);
1344 STAILQ_FOREACH(pid, parents, entry) {
1345 err = queue_commit_id(ids, &pid->id, color,
1350 if (color == COLOR_SKIP)
1355 got_object_commit_close(commit);
1357 got_object_qid_free(qid);
1361 got_object_commit_close(commit);
1365 static const struct got_error *
1366 findtwixt(struct got_object_id ***res, int *nres, int *ncolored,
1367 struct got_object_id **head, int nhead,
1368 struct got_object_id **tail, int ntail,
1369 struct got_repository *repo,
1370 got_pack_progress_cb progress_cb, void *progress_arg,
1371 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1373 const struct got_error *err = NULL;
1374 struct got_object_id_queue ids;
1375 struct got_object_idset *keep, *drop, *skip = NULL;
1383 keep = got_object_idset_alloc();
1385 return got_error_from_errno("got_object_idset_alloc");
1387 drop = got_object_idset_alloc();
1389 err = got_error_from_errno("got_object_idset_alloc");
1393 skip = got_object_idset_alloc();
1395 err = got_error_from_errno("got_object_idset_alloc");
1399 for (i = 0; i < nhead; i++) {
1400 struct got_object_id *id = head[i];
1403 err = queue_commit_or_tag_id(id, COLOR_KEEP, &ids, repo);
1408 for (i = 0; i < ntail; i++) {
1409 struct got_object_id *id = tail[i];
1412 err = queue_commit_or_tag_id(id, COLOR_DROP, &ids, repo);
1417 err = paint_commits(ncolored, &ids, nhead + ntail,
1418 keep, drop, skip, repo, progress_cb, progress_arg, rl,
1419 cancel_cb, cancel_arg);
1423 nkeep = got_object_idset_num_elements(keep);
1425 struct append_id_arg arg;
1426 arg.array = calloc(nkeep, sizeof(struct got_object_id *));
1427 if (arg.array == NULL) {
1428 err = got_error_from_errno("calloc");
1434 err = got_object_idset_for_each(keep, append_id, &arg);
1440 *nres = arg.idx + 1;
1443 got_object_idset_free(keep);
1444 got_object_idset_free(drop);
1446 got_object_idset_free(skip);
1447 got_object_id_queue_free(&ids);
1451 static const struct got_error *
1452 load_object_ids(int *ncolored, int *nfound, int *ntrees,
1453 struct got_object_idset *idset, struct got_object_id **theirs, int ntheirs,
1454 struct got_object_id **ours, int nours, struct got_repository *repo,
1455 int loose_obj_only, got_pack_progress_cb progress_cb, void *progress_arg,
1456 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1458 const struct got_error *err = NULL;
1459 struct got_object_id **ids = NULL;
1460 int i, nobj = 0, obj_type;
1461 struct got_object_idset *idset_exclude;
1463 idset_exclude = got_object_idset_alloc();
1464 if (idset_exclude == NULL)
1465 return got_error_from_errno("got_object_idset_alloc");
1471 err = findtwixt(&ids, &nobj, ncolored, ours, nours, theirs, ntheirs,
1472 repo, progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1476 for (i = 0; i < ntheirs; i++) {
1477 struct got_object_id *id = theirs[i];
1480 err = got_object_get_type(&obj_type, repo, id);
1483 if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1484 err = load_commit(0, idset, idset_exclude, id, repo,
1485 loose_obj_only, ncolored, nfound, ntrees,
1486 progress_cb, progress_arg, rl,
1487 cancel_cb, cancel_arg);
1490 } else if (obj_type == GOT_OBJ_TYPE_TAG) {
1491 err = load_tag(0, idset, idset_exclude, id, repo,
1492 loose_obj_only, ncolored, nfound, ntrees,
1493 progress_cb, progress_arg, rl,
1494 cancel_cb, cancel_arg);
1500 for (i = 0; i < nobj; i++) {
1501 err = load_commit(1, idset, idset_exclude,
1502 ids[i], repo, loose_obj_only, ncolored, nfound, ntrees,
1503 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1508 for (i = 0; i < nours; i++) {
1509 struct got_object_id *id = ours[i];
1510 struct got_pack_meta *m;
1513 m = got_object_idset_get(idset, id);
1515 err = got_object_get_type(&obj_type, repo, id);
1519 obj_type = m->obj_type;
1520 if (obj_type != GOT_OBJ_TYPE_TAG)
1522 err = load_tag(1, idset, idset_exclude, id, repo,
1523 loose_obj_only, ncolored, nfound, ntrees,
1524 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1529 for (i = 0; i < nobj; i++) {
1533 got_object_idset_free(idset_exclude);
1537 const struct got_error *
1538 hwrite(FILE *f, void *buf, off_t len, SHA1_CTX *ctx)
1542 SHA1Update(ctx, buf, len);
1543 n = fwrite(buf, 1, len, f);
1545 return got_ferror(f, GOT_ERR_IO);
1549 const struct got_error *
1550 hcopy(FILE *fsrc, FILE *fdst, off_t len, SHA1_CTX *ctx)
1552 unsigned char buf[65536];
1556 while (remain > 0) {
1557 size_t copylen = MIN(sizeof(buf), remain);
1558 n = fread(buf, 1, copylen, fsrc);
1560 return got_ferror(fsrc, GOT_ERR_IO);
1561 SHA1Update(ctx, buf, copylen);
1562 n = fwrite(buf, 1, copylen, fdst);
1564 return got_ferror(fdst, GOT_ERR_IO);
1571 const struct got_error *
1572 hcopy_mmap(uint8_t *src, off_t src_offset, size_t src_size,
1573 FILE *fdst, off_t len, SHA1_CTX *ctx)
1577 if (src_offset + len > src_size)
1578 return got_error(GOT_ERR_RANGE);
1580 SHA1Update(ctx, src + src_offset, len);
1581 n = fwrite(src + src_offset, 1, len, fdst);
1583 return got_ferror(fdst, GOT_ERR_IO);
1589 putbe32(char *b, uint32_t n)
1598 write_order_cmp(const void *pa, const void *pb)
1600 struct got_pack_meta *a, *b, *ahd, *bhd;
1602 a = *(struct got_pack_meta **)pa;
1603 b = *(struct got_pack_meta **)pb;
1604 ahd = (a->head == NULL) ? a : a->head;
1605 bhd = (b->head == NULL) ? b : b->head;
1606 if (bhd->mtime < ahd->mtime)
1608 if (bhd->mtime > ahd->mtime)
1614 if (a->nchain != b->nchain)
1615 return a->nchain - b->nchain;
1616 if (a->mtime < b->mtime)
1618 if (a->mtime > b->mtime)
1620 return got_object_id_cmp(&a->id, &b->id);
1624 reuse_write_order_cmp(const void *pa, const void *pb)
1626 struct got_pack_meta *a, *b;
1628 a = *(struct got_pack_meta **)pa;
1629 b = *(struct got_pack_meta **)pb;
1631 if (a->reused_delta_offset < b->reused_delta_offset)
1633 if (a->reused_delta_offset > b->reused_delta_offset)
1638 static const struct got_error *
1639 packhdr(int *hdrlen, char *hdr, size_t bufsize, int obj_type, size_t len)
1645 hdr[0] = obj_type << 4;
1646 hdr[0] |= len & 0xf;
1648 for (i = 1; len != 0; i++){
1650 return got_error(GOT_ERR_NO_SPACE);
1651 hdr[i - 1] |= GOT_DELTA_SIZE_MORE;
1652 hdr[i] = len & GOT_DELTA_SIZE_VAL_MASK;
1653 len >>= GOT_DELTA_SIZE_SHIFT;
1661 packoff(char *hdr, off_t off)
1666 rbuf[0] = off & GOT_DELTA_SIZE_VAL_MASK;
1667 for (i = 1; (off >>= GOT_DELTA_SIZE_SHIFT) != 0; i++) {
1668 rbuf[i] = (--off & GOT_DELTA_SIZE_VAL_MASK) |
1669 GOT_DELTA_SIZE_MORE;
1674 hdr[j++] = rbuf[--i];
1678 static const struct got_error *
1679 deltahdr(off_t *packfile_size, SHA1_CTX *ctx, FILE *packfile,
1680 struct got_pack_meta *m)
1682 const struct got_error *err;
1686 if (m->prev->off != 0) {
1687 err = packhdr(&nh, buf, sizeof(buf),
1688 GOT_OBJ_TYPE_OFFSET_DELTA, m->delta_len);
1691 nh += packoff(buf + nh, m->off - m->prev->off);
1692 err = hwrite(packfile, buf, nh, ctx);
1695 *packfile_size += nh;
1697 err = packhdr(&nh, buf, sizeof(buf),
1698 GOT_OBJ_TYPE_REF_DELTA, m->delta_len);
1701 err = hwrite(packfile, buf, nh, ctx);
1704 *packfile_size += nh;
1705 err = hwrite(packfile, m->prev->id.sha1,
1706 sizeof(m->prev->id.sha1), ctx);
1709 *packfile_size += sizeof(m->prev->id.sha1);
1715 static const struct got_error *
1716 write_packed_object(off_t *packfile_size, FILE *packfile,
1717 FILE *delta_cache, uint8_t *delta_cache_map, size_t delta_cache_size,
1718 struct got_pack_meta *m, int *outfd, SHA1_CTX *ctx,
1719 struct got_repository *repo)
1721 const struct got_error *err = NULL;
1722 struct got_deflate_checksum csum;
1725 struct got_raw_object *raw = NULL;
1728 csum.output_sha1 = ctx;
1729 csum.output_crc = NULL;
1731 m->off = ftello(packfile);
1732 if (m->delta_len == 0) {
1733 err = got_object_raw_open(&raw, outfd, repo, &m->id);
1736 err = packhdr(&nh, buf, sizeof(buf),
1737 m->obj_type, raw->size);
1740 err = hwrite(packfile, buf, nh, ctx);
1743 *packfile_size += nh;
1744 if (raw->f == NULL) {
1745 err = got_deflate_to_file_mmap(&outlen,
1746 raw->data + raw->hdrlen, 0, raw->size,
1751 if (fseeko(raw->f, raw->hdrlen, SEEK_SET)
1753 err = got_error_from_errno("fseeko");
1756 err = got_deflate_to_file(&outlen, raw->f,
1757 raw->size, packfile, &csum);
1761 *packfile_size += outlen;
1762 got_object_raw_close(raw);
1764 } else if (m->delta_buf) {
1765 err = deltahdr(packfile_size, ctx, packfile, m);
1768 err = hwrite(packfile, m->delta_buf,
1769 m->delta_compressed_len, ctx);
1772 *packfile_size += m->delta_compressed_len;
1774 m->delta_buf = NULL;
1775 } else if (delta_cache_map) {
1776 err = deltahdr(packfile_size, ctx, packfile, m);
1779 err = hcopy_mmap(delta_cache_map, m->delta_offset,
1780 delta_cache_size, packfile, m->delta_compressed_len,
1784 *packfile_size += m->delta_compressed_len;
1786 if (fseeko(delta_cache, m->delta_offset, SEEK_SET)
1788 err = got_error_from_errno("fseeko");
1791 err = deltahdr(packfile_size, ctx, packfile, m);
1794 err = hcopy(delta_cache, packfile,
1795 m->delta_compressed_len, ctx);
1798 *packfile_size += m->delta_compressed_len;
1802 got_object_raw_close(raw);
1806 static const struct got_error *
1807 genpack(uint8_t *pack_sha1, FILE *packfile, FILE *delta_cache,
1808 struct got_pack_meta **deltify, int ndeltify,
1809 struct got_pack_meta **reuse, int nreuse,
1810 int ncolored, int nfound, int ntrees, int nours,
1811 struct got_repository *repo,
1812 got_pack_progress_cb progress_cb, void *progress_arg,
1813 struct got_ratelimit *rl,
1814 got_cancel_cb cancel_cb, void *cancel_arg)
1816 const struct got_error *err = NULL;
1819 struct got_pack_meta *m;
1822 off_t packfile_size = 0;
1824 int delta_cache_fd = -1;
1825 uint8_t *delta_cache_map = NULL;
1826 size_t delta_cache_size = 0;
1830 #ifndef GOT_PACK_NO_MMAP
1831 delta_cache_fd = dup(fileno(delta_cache));
1832 if (delta_cache_fd != -1) {
1834 if (fstat(delta_cache_fd, &sb) == -1) {
1835 err = got_error_from_errno("fstat");
1838 if (sb.st_size > 0 && sb.st_size <= SIZE_MAX) {
1839 delta_cache_map = mmap(NULL, sb.st_size,
1840 PROT_READ, MAP_PRIVATE, delta_cache_fd, 0);
1841 if (delta_cache_map == MAP_FAILED) {
1842 if (errno != ENOMEM) {
1843 err = got_error_from_errno("mmap");
1846 delta_cache_map = NULL; /* fallback on stdio */
1848 delta_cache_size = (size_t)sb.st_size;
1852 err = hwrite(packfile, "PACK", 4, &ctx);
1855 putbe32(buf, GOT_PACKFILE_VERSION);
1856 err = hwrite(packfile, buf, 4, &ctx);
1859 putbe32(buf, ndeltify + nreuse);
1860 err = hwrite(packfile, buf, 4, &ctx);
1864 qsort(deltify, ndeltify, sizeof(struct got_pack_meta *),
1866 for (i = 0; i < ndeltify; i++) {
1867 err = report_progress(progress_cb, progress_arg, rl,
1868 ncolored, nfound, ntrees, packfile_size, nours,
1869 ndeltify + nreuse, ndeltify + nreuse, i);
1873 err = write_packed_object(&packfile_size, packfile,
1874 delta_cache, delta_cache_map, delta_cache_size,
1875 m, &outfd, &ctx, repo);
1880 qsort(reuse, nreuse, sizeof(struct got_pack_meta *),
1881 reuse_write_order_cmp);
1882 for (i = 0; i < nreuse; i++) {
1883 err = report_progress(progress_cb, progress_arg, rl,
1884 ncolored, nfound, ntrees, packfile_size, nours,
1885 ndeltify + nreuse, ndeltify + nreuse, ndeltify + i);
1889 err = write_packed_object(&packfile_size, packfile,
1890 delta_cache, delta_cache_map, delta_cache_size,
1891 m, &outfd, &ctx, repo);
1896 SHA1Final(pack_sha1, &ctx);
1897 n = fwrite(pack_sha1, 1, SHA1_DIGEST_LENGTH, packfile);
1898 if (n != SHA1_DIGEST_LENGTH)
1899 err = got_ferror(packfile, GOT_ERR_IO);
1900 packfile_size += SHA1_DIGEST_LENGTH;
1901 packfile_size += sizeof(struct got_packfile_hdr);
1903 err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1904 packfile_size, nours, ndeltify + nreuse,
1905 ndeltify + nreuse, ndeltify + nreuse);
1910 if (outfd != -1 && close(outfd) == -1 && err == NULL)
1911 err = got_error_from_errno("close");
1912 if (delta_cache_map && munmap(delta_cache_map, delta_cache_size) == -1)
1913 err = got_error_from_errno("munmap");
1914 if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
1915 err = got_error_from_errno("close");
1919 static const struct got_error *
1920 add_meta_idset_cb(struct got_object_id *id, void *data, void *arg)
1922 struct got_pack_meta *m = data;
1923 struct got_pack_metavec *v = arg;
1925 if (m->have_reused_delta)
1928 return add_meta(m, v);
1931 const struct got_error *
1932 got_pack_create(uint8_t *packsha1, FILE *packfile,
1933 struct got_object_id **theirs, int ntheirs,
1934 struct got_object_id **ours, int nours,
1935 struct got_repository *repo, int loose_obj_only, int allow_empty,
1936 got_pack_progress_cb progress_cb, void *progress_arg,
1937 got_cancel_cb cancel_cb, void *cancel_arg)
1939 const struct got_error *err;
1940 int delta_cache_fd = -1;
1941 FILE *delta_cache = NULL;
1942 struct got_object_idset *idset;
1943 struct got_ratelimit rl;
1944 struct got_pack_metavec deltify, reuse;
1945 int ncolored = 0, nfound = 0, ntrees = 0;
1948 memset(&deltify, 0, sizeof(deltify));
1949 memset(&reuse, 0, sizeof(reuse));
1951 got_ratelimit_init(&rl, 0, 500);
1953 idset = got_object_idset_alloc();
1955 return got_error_from_errno("got_object_idset_alloc");
1957 err = load_object_ids(&ncolored, &nfound, &ntrees, idset, theirs,
1958 ntheirs, ours, nours, repo, loose_obj_only,
1959 progress_cb, progress_arg, &rl, cancel_cb, cancel_arg);
1964 err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1965 0L, nours, got_object_idset_num_elements(idset), 0, 0);
1970 if (got_object_idset_num_elements(idset) == 0 && !allow_empty) {
1971 err = got_error(GOT_ERR_CANNOT_PACK);
1975 delta_cache_fd = got_opentempfd();
1976 if (delta_cache_fd == -1) {
1977 err = got_error_from_errno("got_opentemp");
1982 reuse.meta = calloc(reuse.metasz,
1983 sizeof(struct got_pack_meta *));
1984 if (reuse.meta == NULL) {
1985 err = got_error_from_errno("calloc");
1989 err = search_deltas(&reuse, idset, delta_cache_fd, ncolored, nfound,
1990 ntrees, nours, repo, progress_cb, progress_arg, &rl,
1991 cancel_cb, cancel_arg);
1995 delta_cache = fdopen(delta_cache_fd, "a+");
1996 if (delta_cache == NULL) {
1997 err = got_error_from_errno("fdopen");
2000 delta_cache_fd = -1;
2002 if (fseeko(delta_cache, 0L, SEEK_END) == -1) {
2003 err = got_error_from_errno("fseeko");
2007 ndeltify = got_object_idset_num_elements(idset) - reuse.nmeta;
2009 deltify.meta = calloc(ndeltify, sizeof(struct got_pack_meta *));
2010 if (deltify.meta == NULL) {
2011 err = got_error_from_errno("calloc");
2014 deltify.metasz = ndeltify;
2016 err = got_object_idset_for_each(idset, add_meta_idset_cb,
2020 if (deltify.nmeta > 0) {
2021 err = pick_deltas(deltify.meta, deltify.nmeta,
2022 ncolored, nfound, ntrees, nours, reuse.nmeta,
2023 delta_cache, repo, progress_cb, progress_arg, &rl,
2024 cancel_cb, cancel_arg);
2030 if (fflush(delta_cache) == EOF) {
2031 err = got_error_from_errno("fflush");
2034 err = genpack(packsha1, packfile, delta_cache, deltify.meta,
2035 deltify.nmeta, reuse.meta, reuse.nmeta, ncolored, nfound, ntrees,
2036 nours, repo, progress_cb, progress_arg, &rl,
2037 cancel_cb, cancel_arg);
2041 free_nmeta(deltify.meta, deltify.nmeta);
2042 free_nmeta(reuse.meta, reuse.nmeta);
2043 got_object_idset_free(idset);
2044 if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
2045 err = got_error_from_errno("close");
2046 if (delta_cache && fclose(delta_cache) == EOF && err == NULL)
2047 err = got_error_from_errno("fclose");