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>
34 #if defined(__FreeBSD__)
38 #include "got_error.h"
39 #include "got_cancel.h"
40 #include "got_object.h"
42 #include "got_reference.h"
43 #include "got_repository_admin.h"
44 #include "got_opentemp.h"
46 #include "got_lib_deltify.h"
47 #include "got_lib_delta.h"
48 #include "got_lib_object.h"
49 #include "got_lib_object_idset.h"
50 #include "got_lib_object_cache.h"
51 #include "got_lib_deflate.h"
52 #include "got_lib_pack.h"
53 #include "got_lib_privsep.h"
54 #include "got_lib_repository.h"
55 #include "got_lib_ratelimit.h"
56 #include "got_lib_inflate.h"
59 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
63 #define MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
67 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
70 struct got_pack_meta {
71 struct got_object_id id;
77 /* The best delta we picked */
78 struct got_pack_meta *head;
79 struct got_pack_meta *prev;
80 unsigned char *delta_buf; /* if encoded in memory (compressed) */
81 off_t delta_offset; /* offset in delta cache file (compressed) */
82 off_t delta_len; /* encoded delta length */
83 off_t delta_compressed_len; /* encoded+compressed delta length */
86 int have_reused_delta;
87 off_t reused_delta_offset; /* offset of delta in reused pack file */
88 struct got_object_id *base_obj_id;
90 /* Only used for delta window */
91 struct got_delta_table *dtab;
93 /* Only used for writing offset deltas */
97 struct got_pack_metavec {
98 struct got_pack_meta **meta;
103 static const struct got_error *
104 alloc_meta(struct got_pack_meta **new, struct got_object_id *id,
105 const char *path, int obj_type, time_t mtime)
107 const struct got_error *err = NULL;
108 struct got_pack_meta *m;
112 m = calloc(1, sizeof(*m));
114 return got_error_from_errno("calloc");
116 memcpy(&m->id, id, sizeof(m->id));
118 m->path = strdup(path);
119 if (m->path == NULL) {
120 err = got_error_from_errno("strdup");
125 m->obj_type = obj_type;
132 clear_meta(struct got_pack_meta *meta)
138 free(meta->delta_buf);
139 meta->delta_buf = NULL;
140 free(meta->base_obj_id);
141 meta->base_obj_id = NULL;
145 free_nmeta(struct got_pack_meta **meta, int nmeta)
149 for (i = 0; i < nmeta; i++)
155 delta_order_cmp(const void *pa, const void *pb)
157 struct got_pack_meta *a, *b;
160 a = *(struct got_pack_meta **)pa;
161 b = *(struct got_pack_meta **)pb;
163 if (a->obj_type != b->obj_type)
164 return a->obj_type - b->obj_type;
165 cmp = strcmp(a->path, b->path);
168 if (a->mtime < b->mtime)
170 if (a->mtime > b->mtime)
172 return got_object_id_cmp(&a->id, &b->id);
176 delta_size(struct got_delta_instruction *deltas, int ndeltas)
180 for (i = 0; i < ndeltas; i++) {
182 size += GOT_DELTA_SIZE_SHIFT;
184 size += deltas[i].len + 1;
189 static const struct got_error *
190 append(unsigned char **p, size_t *len, off_t *sz, void *seg, int nseg)
194 if (*len + nseg >= *sz) {
195 while (*len + nseg >= *sz)
197 n = realloc(*p, *sz);
199 return got_error_from_errno("realloc");
202 memcpy(*p + *len, seg, nseg);
207 static const struct got_error *
208 encode_delta_in_mem(struct got_pack_meta *m, struct got_raw_object *o,
209 struct got_delta_instruction *deltas, int ndeltas,
210 off_t delta_size, off_t base_size)
212 const struct got_error *err;
213 unsigned char buf[16], *bp;
215 size_t len = 0, compressed_len;
216 off_t bufsize = delta_size;
218 struct got_delta_instruction *d;
221 delta_buf = malloc(bufsize);
222 if (delta_buf == NULL)
223 return got_error_from_errno("malloc");
225 /* base object size */
226 buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
227 n = base_size >> GOT_DELTA_SIZE_SHIFT;
228 for (i = 1; n > 0; i++) {
229 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
230 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
231 n >>= GOT_DELTA_SIZE_SHIFT;
233 err = append(&delta_buf, &len, &bufsize, buf, i);
237 /* target object size */
238 buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
239 n = o->size >> GOT_DELTA_SIZE_SHIFT;
240 for (i = 1; n > 0; i++) {
241 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
242 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
243 n >>= GOT_DELTA_SIZE_SHIFT;
245 err = append(&delta_buf, &len, &bufsize, buf, i);
249 for (j = 0; j < ndeltas; j++) {
254 buf[0] = GOT_DELTA_BASE_COPY;
255 for (i = 0; i < 4; i++) {
256 /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
265 if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
266 /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
267 for (i = 0; i < 3 && n > 0; i++) {
268 buf[0] |= 1 << (i + 4);
273 err = append(&delta_buf, &len, &bufsize,
277 } else if (o->f == NULL) {
279 while (n != d->len) {
280 buf[0] = (d->len - n < 127) ? d->len - n : 127;
281 err = append(&delta_buf, &len, &bufsize,
285 err = append(&delta_buf, &len, &bufsize,
286 o->data + o->hdrlen + d->offset + n,
295 if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1) {
296 err = got_error_from_errno("fseeko");
300 while (n != d->len) {
301 buf[0] = (d->len - n < 127) ? d->len - n : 127;
302 err = append(&delta_buf, &len, &bufsize,
306 r = fread(content, 1, buf[0], o->f);
308 err = got_ferror(o->f, GOT_ERR_IO);
311 err = append(&delta_buf, &len, &bufsize,
320 err = got_deflate_to_mem_mmap(&m->delta_buf, &compressed_len,
321 NULL, NULL, delta_buf, 0, len);
326 m->delta_compressed_len = compressed_len;
332 static const struct got_error *
333 encode_delta(struct got_pack_meta *m, struct got_raw_object *o,
334 struct got_delta_instruction *deltas, int ndeltas,
335 off_t base_size, FILE *f)
337 const struct got_error *err;
338 unsigned char buf[16], *bp;
341 struct got_deflate_buf zb;
342 struct got_delta_instruction *d;
343 off_t delta_len = 0, compressed_len = 0;
345 err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
349 /* base object size */
350 buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
351 n = base_size >> GOT_DELTA_SIZE_SHIFT;
352 for (i = 1; n > 0; i++) {
353 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
354 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
355 n >>= GOT_DELTA_SIZE_SHIFT;
358 err = got_deflate_append_to_file_mmap(&zb, &compressed_len,
364 /* target object size */
365 buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
366 n = o->size >> GOT_DELTA_SIZE_SHIFT;
367 for (i = 1; n > 0; i++) {
368 buf[i - 1] |= GOT_DELTA_SIZE_MORE;
369 buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
370 n >>= GOT_DELTA_SIZE_SHIFT;
373 err = got_deflate_append_to_file_mmap(&zb, &compressed_len,
379 for (j = 0; j < ndeltas; j++) {
384 buf[0] = GOT_DELTA_BASE_COPY;
385 for (i = 0; i < 4; i++) {
386 /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
394 if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
395 /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
396 for (i = 0; i < 3 && n > 0; i++) {
397 buf[0] |= 1 << (i + 4);
402 err = got_deflate_append_to_file_mmap(&zb,
403 &compressed_len, buf, 0, bp - buf, f, NULL);
406 delta_len += (bp - buf);
407 } else if (o->f == NULL) {
409 while (n != d->len) {
410 buf[0] = (d->len - n < 127) ? d->len - n : 127;
411 err = got_deflate_append_to_file_mmap(&zb,
412 &compressed_len, buf, 0, 1, f, NULL);
416 err = got_deflate_append_to_file_mmap(&zb,
418 o->data + o->hdrlen + d->offset + n, 0,
428 if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1) {
429 err = got_error_from_errno("fseeko");
433 while (n != d->len) {
434 buf[0] = (d->len - n < 127) ? d->len - n : 127;
435 err = got_deflate_append_to_file_mmap(&zb,
436 &compressed_len, buf, 0, 1, f, NULL);
440 r = fread(content, 1, buf[0], o->f);
442 err = got_ferror(o->f, GOT_ERR_IO);
445 err = got_deflate_append_to_file_mmap(&zb,
446 &compressed_len, content, 0, buf[0], f,
456 err = got_deflate_flush(&zb, f, NULL, &compressed_len);
461 if (compressed_len != ftello(f) - m->delta_offset) {
462 err = got_error(GOT_ERR_COMPRESSION);
466 m->delta_len = delta_len;
467 m->delta_compressed_len = compressed_len;
469 got_deflate_end(&zb);
473 static const struct got_error *
474 report_progress(got_pack_progress_cb progress_cb, void *progress_arg,
475 struct got_ratelimit *rl, int ncolored, int nfound, int ntrees,
476 off_t packfile_size, int ncommits, int nobj_total, int obj_deltify,
479 const struct got_error *err;
482 if (progress_cb == NULL)
485 err = got_ratelimit_check(&elapsed, rl);
489 return progress_cb(progress_arg, ncolored, nfound, ntrees,
490 packfile_size, ncommits, nobj_total, obj_deltify, nobj_written);
493 static const struct got_error *
494 add_meta(struct got_pack_meta *m, struct got_pack_metavec *v)
496 if (v->nmeta == v->metasz){
497 size_t newsize = 2 * v->metasz;
498 struct got_pack_meta **new;
499 new = reallocarray(v->meta, newsize, sizeof(*new));
501 return got_error_from_errno("reallocarray");
506 v->meta[v->nmeta++] = m;
510 static const struct got_error *
511 find_pack_for_reuse(struct got_packidx **best_packidx,
512 struct got_repository *repo)
514 const struct got_error *err = NULL;
515 struct got_pathlist_entry *pe;
516 const char *best_packidx_path = NULL;
519 *best_packidx = NULL;
521 TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
522 const char *path_packidx = pe->path;
523 struct got_packidx *packidx;
526 err = got_repo_get_packidx(&packidx, path_packidx, repo);
530 nobj = be32toh(packidx->hdr.fanout_table[0xff]);
531 if (nobj > nobj_max) {
532 best_packidx_path = path_packidx;
537 if (best_packidx_path) {
538 err = got_repo_get_packidx(best_packidx, best_packidx_path,
546 struct imsgbuf *ibuf;
547 struct got_object_id *ids[GOT_IMSG_OBJ_ID_LIST_MAX_NIDS];
551 static const struct got_error *
552 send_id(struct got_object_id *id, void *data, void *arg)
554 const struct got_error *err = NULL;
555 struct send_id_arg *a = arg;
557 a->ids[a->nids++] = id;
559 if (a->nids >= GOT_IMSG_OBJ_ID_LIST_MAX_NIDS) {
560 err = got_privsep_send_object_idlist(a->ibuf, a->ids, a->nids);
569 static const struct got_error *
570 recv_reused_delta(struct got_imsg_reused_delta *delta,
571 struct got_object_idset *idset, struct got_pack_metavec *v)
573 struct got_pack_meta *m, *base;
575 if (delta->delta_offset + delta->delta_size < delta->delta_offset ||
576 delta->delta_offset +
577 delta->delta_compressed_size < delta->delta_offset)
578 return got_error(GOT_ERR_BAD_PACKFILE);
580 m = got_object_idset_get(idset, &delta->id);
582 return got_error(GOT_ERR_NO_OBJ);
584 base = got_object_idset_get(idset, &delta->base_id);
586 return got_error(GOT_ERR_NO_OBJ);
588 m->delta_len = delta->delta_size;
589 m->delta_compressed_len = delta->delta_compressed_size;
590 m->delta_offset = delta->delta_out_offset;
592 m->size = delta->result_size;
593 m->have_reused_delta = 1;
594 m->reused_delta_offset = delta->delta_offset;
595 m->base_obj_id = got_object_id_dup(&delta->base_id);
596 if (m->base_obj_id == NULL)
597 return got_error_from_errno("got_object_id_dup");
599 return add_meta(m, v);
602 static const struct got_error *
603 search_deltas(struct got_pack_metavec *v, struct got_object_idset *idset,
604 int delta_cache_fd, int ncolored, int nfound, int ntrees, int ncommits,
605 struct got_repository *repo,
606 got_pack_progress_cb progress_cb, void *progress_arg,
607 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
609 const struct got_error *err = NULL;
610 struct got_packidx *packidx;
611 struct got_pack *pack;
612 struct send_id_arg sia;
613 struct got_imsg_reused_delta deltas[GOT_IMSG_REUSED_DELTAS_MAX_NDELTAS];
616 err = find_pack_for_reuse(&packidx, repo);
623 err = got_object_prepare_delta_reuse(&pack, packidx,
624 delta_cache_fd, repo);
628 memset(&sia, 0, sizeof(sia));
629 sia.ibuf = pack->privsep_child->ibuf;
630 err = got_object_idset_for_each(idset, send_id, &sia);
634 err = got_privsep_send_object_idlist(pack->privsep_child->ibuf,
639 err = got_privsep_send_object_idlist_done(pack->privsep_child->ibuf);
647 err = (*cancel_cb)(cancel_arg);
652 err = got_privsep_recv_reused_deltas(&done, deltas, &ndeltas,
653 pack->privsep_child->ibuf);
657 for (i = 0; i < ndeltas; i++) {
658 struct got_imsg_reused_delta *delta = &deltas[i];
659 err = recv_reused_delta(delta, idset, v);
664 err = report_progress(progress_cb, progress_arg, rl,
665 ncolored, nfound, ntrees, 0L, ncommits,
666 got_object_idset_num_elements(idset), v->nmeta, 0);
674 static const struct got_error *
675 pick_deltas(struct got_pack_meta **meta, int nmeta, int ncolored,
676 int nfound, int ntrees, int ncommits, int nreused, FILE *delta_cache,
677 struct got_repository *repo,
678 got_pack_progress_cb progress_cb, void *progress_arg,
679 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
681 const struct got_error *err = NULL;
682 struct got_pack_meta *m = NULL, *base = NULL;
683 struct got_raw_object *raw = NULL, *base_raw = NULL;
684 struct got_delta_instruction *deltas = NULL, *best_deltas = NULL;
685 int i, j, ndeltas, best_ndeltas;
686 off_t size, best_size;
687 const int max_base_candidates = 3;
688 size_t delta_memsize = 0;
689 const size_t max_delta_memsize = 25 * GOT_DELTA_RESULT_SIZE_CACHED_MAX;
692 qsort(meta, nmeta, sizeof(struct got_pack_meta *), delta_order_cmp);
693 for (i = 0; i < nmeta; i++) {
695 err = (*cancel_cb)(cancel_arg);
699 err = report_progress(progress_cb, progress_arg, rl,
700 ncolored, nfound, ntrees, 0L, ncommits, nreused + nmeta,
706 if (m->obj_type == GOT_OBJ_TYPE_COMMIT ||
707 m->obj_type == GOT_OBJ_TYPE_TAG)
710 err = got_object_raw_open(&raw, &outfd, repo, &m->id);
715 if (raw->f == NULL) {
716 err = got_deltify_init_mem(&m->dtab, raw->data,
717 raw->hdrlen, raw->size + raw->hdrlen);
719 err = got_deltify_init(&m->dtab, raw->f, raw->hdrlen,
720 raw->size + raw->hdrlen);
725 if (i > max_base_candidates) {
726 struct got_pack_meta *n = NULL;
727 n = meta[i - (max_base_candidates + 1)];
728 got_deltify_free(n->dtab);
732 best_size = raw->size;
734 for (j = MAX(0, i - max_base_candidates); j < i; j++) {
736 err = (*cancel_cb)(cancel_arg);
741 /* long chains make unpacking slow, avoid such bases */
742 if (base->nchain >= 128 ||
743 base->obj_type != m->obj_type)
746 err = got_object_raw_open(&base_raw, &outfd, repo,
751 if (raw->f == NULL && base_raw->f == NULL) {
752 err = got_deltify_mem_mem(&deltas, &ndeltas,
753 raw->data, raw->hdrlen,
754 raw->size + raw->hdrlen,
755 base->dtab, base_raw->data,
757 base_raw->size + base_raw->hdrlen);
758 } else if (raw->f == NULL) {
759 err = got_deltify_mem_file(&deltas, &ndeltas,
760 raw->data, raw->hdrlen,
761 raw->size + raw->hdrlen,
762 base->dtab, base_raw->f,
764 base_raw->size + base_raw->hdrlen);
765 } else if (base_raw->f == NULL) {
766 err = got_deltify_file_mem(&deltas, &ndeltas,
768 raw->size + raw->hdrlen,
769 base->dtab, base_raw->data,
771 base_raw->size + base_raw->hdrlen);
773 err = got_deltify(&deltas, &ndeltas,
775 raw->size + raw->hdrlen,
776 base->dtab, base_raw->f, base_raw->hdrlen,
777 base_raw->size + base_raw->hdrlen);
779 got_object_raw_close(base_raw);
784 size = delta_size(deltas, ndeltas);
785 if (size + 32 < best_size){
787 * if we already picked a best delta,
792 best_deltas = deltas;
793 best_ndeltas = ndeltas;
795 m->nchain = base->nchain + 1;
797 m->head = base->head;
807 if (best_ndeltas > 0) {
808 if (best_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX &&
809 delta_memsize + best_size <= max_delta_memsize) {
810 delta_memsize += best_size;
811 err = encode_delta_in_mem(m, raw, best_deltas,
812 best_ndeltas, best_size, m->prev->size);
814 m->delta_offset = ftello(delta_cache);
815 err = encode_delta(m, raw, best_deltas,
816 best_ndeltas, m->prev->size, delta_cache);
825 got_object_raw_close(raw);
829 for (i = MAX(0, nmeta - max_base_candidates); i < nmeta; i++) {
830 got_deltify_free(meta[i]->dtab);
831 meta[i]->dtab = NULL;
834 got_object_raw_close(raw);
836 got_object_raw_close(base_raw);
837 if (outfd != -1 && close(outfd) == -1 && err == NULL)
838 err = got_error_from_errno("close");
844 static const struct got_error *
845 search_packidx(int *found, struct got_object_id *id,
846 struct got_repository *repo)
848 const struct got_error *err = NULL;
849 struct got_packidx *packidx = NULL;
854 err = got_repo_search_packidx(&packidx, &idx, repo, id);
856 *found = 1; /* object is already packed */
857 else if (err->code == GOT_ERR_NO_OBJ)
862 static const struct got_error *
863 add_object(int want_meta, struct got_object_idset *idset,
864 struct got_object_id *id, const char *path, int obj_type,
865 time_t mtime, int loose_obj_only, struct got_repository *repo,
866 int *ncolored, int *nfound, int *ntrees,
867 got_pack_progress_cb progress_cb, void *progress_arg,
868 struct got_ratelimit *rl)
870 const struct got_error *err;
871 struct got_pack_meta *m = NULL;
873 if (loose_obj_only) {
875 err = search_packidx(&is_packed, id, repo);
878 if (is_packed && want_meta)
883 err = alloc_meta(&m, id, path, obj_type, mtime);
888 err = report_progress(progress_cb, progress_arg, rl,
889 *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
897 err = got_object_idset_add(idset, id, m);
905 static const struct got_error *
906 load_tree_entries(struct got_object_id_queue *ids, int want_meta,
907 struct got_object_idset *idset, struct got_object_idset *idset_exclude,
908 struct got_object_id *tree_id,
909 const char *dpath, time_t mtime, struct got_repository *repo,
910 int loose_obj_only, int *ncolored, int *nfound, int *ntrees,
911 got_pack_progress_cb progress_cb, void *progress_arg,
912 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
914 const struct got_error *err;
915 struct got_tree_object *tree;
919 err = got_object_open_as_tree(&tree, repo, tree_id);
924 err = report_progress(progress_cb, progress_arg, rl,
925 *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
929 for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
930 struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
931 struct got_object_id *id = got_tree_entry_get_id(e);
932 mode_t mode = got_tree_entry_get_mode(e);
935 err = (*cancel_cb)(cancel_arg);
940 if (got_object_tree_entry_is_submodule(e) ||
941 got_object_idset_contains(idset, id) ||
942 got_object_idset_contains(idset_exclude, id))
945 if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
946 got_tree_entry_get_name(e)) == -1) {
947 err = got_error_from_errno("asprintf");
952 struct got_object_qid *qid;
953 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, loose_obj_only, repo,
961 ncolored, nfound, ntrees,
962 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);
996 STAILQ_INIT(&tree_ids);
997 STAILQ_INSERT_TAIL(&tree_ids, qid, entry);
999 while (!STAILQ_EMPTY(&tree_ids)) {
1001 err = (*cancel_cb)(cancel_arg);
1006 qid = STAILQ_FIRST(&tree_ids);
1007 STAILQ_REMOVE_HEAD(&tree_ids, entry);
1009 if (got_object_idset_contains(idset, &qid->id) ||
1010 got_object_idset_contains(idset_exclude, &qid->id)) {
1011 got_object_qid_free(qid);
1015 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1016 &qid->id, dpath, GOT_OBJ_TYPE_TREE,
1017 mtime, loose_obj_only, repo,
1018 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1020 got_object_qid_free(qid);
1024 err = load_tree_entries(&tree_ids, want_meta, idset,
1025 idset_exclude, &qid->id,
1026 dpath, mtime, repo, loose_obj_only, ncolored, nfound,
1027 ntrees, progress_cb, progress_arg, rl,
1028 cancel_cb, cancel_arg);
1029 got_object_qid_free(qid);
1034 got_object_id_queue_free(&tree_ids);
1038 static const struct got_error *
1039 load_commit(int want_meta, struct got_object_idset *idset,
1040 struct got_object_idset *idset_exclude,
1041 struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
1042 int *ncolored, int *nfound, int *ntrees,
1043 got_pack_progress_cb progress_cb, void *progress_arg,
1044 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1046 const struct got_error *err;
1047 struct got_commit_object *commit;
1049 if (got_object_idset_contains(idset, id) ||
1050 got_object_idset_contains(idset_exclude, id))
1053 if (loose_obj_only) {
1055 err = search_packidx(&is_packed, id, repo);
1058 if (is_packed && want_meta)
1062 err = got_object_open_as_commit(&commit, repo, id);
1066 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1067 id, "", GOT_OBJ_TYPE_COMMIT,
1068 got_object_commit_get_committer_time(commit),
1069 loose_obj_only, repo,
1070 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1074 err = load_tree(want_meta, idset, idset_exclude,
1075 got_object_commit_get_tree_id(commit),
1076 "", got_object_commit_get_committer_time(commit),
1077 repo, loose_obj_only, ncolored, nfound, ntrees,
1078 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1080 got_object_commit_close(commit);
1084 static const struct got_error *
1085 load_tag(int want_meta, struct got_object_idset *idset,
1086 struct got_object_idset *idset_exclude,
1087 struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
1088 int *ncolored, int *nfound, int *ntrees,
1089 got_pack_progress_cb progress_cb, void *progress_arg,
1090 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1092 const struct got_error *err;
1093 struct got_tag_object *tag = NULL;
1095 if (got_object_idset_contains(idset, id) ||
1096 got_object_idset_contains(idset_exclude, id))
1099 if (loose_obj_only) {
1101 err = search_packidx(&is_packed, id, repo);
1104 if (is_packed && want_meta)
1108 err = got_object_open_as_tag(&tag, repo, id);
1112 err = add_object(want_meta, want_meta ? idset : idset_exclude,
1113 id, "", GOT_OBJ_TYPE_TAG,
1114 got_object_tag_get_tagger_time(tag), loose_obj_only, repo,
1115 ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1119 switch (got_object_tag_get_object_type(tag)) {
1120 case GOT_OBJ_TYPE_COMMIT:
1121 err = load_commit(want_meta, idset, idset_exclude,
1122 got_object_tag_get_object_id(tag), repo, loose_obj_only,
1123 ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1124 cancel_cb, cancel_arg);
1126 case GOT_OBJ_TYPE_TREE:
1127 err = load_tree(want_meta, idset, idset_exclude,
1128 got_object_tag_get_object_id(tag), "",
1129 got_object_tag_get_tagger_time(tag), repo, loose_obj_only,
1130 ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1131 cancel_cb, cancel_arg);
1138 got_object_tag_close(tag);
1142 enum findtwixt_color {
1149 static const int findtwixt_colors[] = {
1156 static const struct got_error *
1157 paint_commit(struct got_object_qid *qid, int color)
1159 if (color < 0 || color >= nitems(findtwixt_colors))
1160 return got_error(GOT_ERR_RANGE);
1162 qid->data = (void *)&findtwixt_colors[color];
1166 static const struct got_error *
1167 queue_commit_id(struct got_object_id_queue *ids, struct got_object_id *id,
1168 int color, struct got_repository *repo)
1170 const struct got_error *err;
1171 struct got_object_qid *qid;
1173 err = got_object_qid_alloc(&qid, id);
1177 STAILQ_INSERT_TAIL(ids, qid, entry);
1178 return paint_commit(qid, color);
1181 struct append_id_arg {
1182 struct got_object_id **array;
1184 struct got_object_idset *drop;
1185 struct got_object_idset *skip;
1188 static const struct got_error *
1189 append_id(struct got_object_id *id, void *data, void *arg)
1191 struct append_id_arg *a = arg;
1193 if (got_object_idset_contains(a->skip, id) ||
1194 got_object_idset_contains(a->drop, id))
1197 a->array[++a->idx] = got_object_id_dup(id);
1198 if (a->array[a->idx] == NULL)
1199 return got_error_from_errno("got_object_id_dup");
1204 static const struct got_error *
1205 queue_commit_or_tag_id(struct got_object_id *id, int color,
1206 struct got_object_id_queue *ids, struct got_repository *repo)
1208 const struct got_error *err;
1209 struct got_tag_object *tag = NULL;
1212 err = got_object_get_type(&obj_type, repo, id);
1216 if (obj_type == GOT_OBJ_TYPE_TAG) {
1217 err = got_object_open_as_tag(&tag, repo, id);
1220 obj_type = got_object_tag_get_object_type(tag);
1221 id = got_object_tag_get_object_id(tag);
1224 if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1225 err = queue_commit_id(ids, id, color, repo);
1231 got_object_tag_close(tag);
1235 static const struct got_error *
1236 paint_commits(int *ncolored, struct got_object_id_queue *ids, int nids,
1237 struct got_object_idset *keep, struct got_object_idset *drop,
1238 struct got_object_idset *skip, struct got_repository *repo,
1239 got_pack_progress_cb progress_cb, void *progress_arg,
1240 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1242 const struct got_error *err = NULL;
1243 struct got_commit_object *commit = NULL;
1244 const struct got_object_id_queue *parents;
1245 struct got_object_qid *qid;
1246 int nqueued = nids, nskip = 0;
1248 while (!STAILQ_EMPTY(ids) && nskip != nqueued) {
1252 err = cancel_cb(cancel_arg);
1257 qid = STAILQ_FIRST(ids);
1258 STAILQ_REMOVE_HEAD(ids, entry);
1260 color = *((int *)qid->data);
1261 if (color == COLOR_SKIP)
1264 if (got_object_idset_contains(skip, &qid->id)) {
1265 got_object_qid_free(qid);
1271 if (got_object_idset_contains(keep, &qid->id)) {
1272 got_object_qid_free(qid);
1275 if (got_object_idset_contains(drop, &qid->id)) {
1276 err = paint_commit(qid, COLOR_SKIP);
1282 err = got_object_idset_add(keep, &qid->id, NULL);
1287 if (got_object_idset_contains(drop, &qid->id)) {
1288 got_object_qid_free(qid);
1291 if (got_object_idset_contains(keep, &qid->id)) {
1292 err = paint_commit(qid, COLOR_SKIP);
1298 err = got_object_idset_add(drop, &qid->id, NULL);
1303 if (!got_object_idset_contains(skip, &qid->id)) {
1304 err = got_object_idset_add(skip, &qid->id,
1311 /* should not happen */
1312 err = got_error_fmt(GOT_ERR_NOT_IMPL,
1313 "%s invalid commit color %d", __func__, color);
1317 err = report_progress(progress_cb, progress_arg, rl,
1318 *ncolored, 0, 0, 0L, 0, 0, 0, 0);
1323 err = got_object_open_as_commit(&commit, repo, &qid->id);
1327 parents = got_object_commit_get_parent_ids(commit);
1329 struct got_object_qid *pid;
1330 color = *((int *)qid->data);
1331 STAILQ_FOREACH(pid, parents, entry) {
1332 err = queue_commit_id(ids, &pid->id, color,
1337 if (color == COLOR_SKIP)
1342 got_object_commit_close(commit);
1344 got_object_qid_free(qid);
1348 got_object_commit_close(commit);
1352 static const struct got_error *
1353 findtwixt(struct got_object_id ***res, int *nres, int *ncolored,
1354 struct got_object_id **head, int nhead,
1355 struct got_object_id **tail, int ntail,
1356 struct got_repository *repo,
1357 got_pack_progress_cb progress_cb, void *progress_arg,
1358 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1360 const struct got_error *err = NULL;
1361 struct got_object_id_queue ids;
1362 struct got_object_idset *keep, *drop, *skip = NULL;
1370 keep = got_object_idset_alloc();
1372 return got_error_from_errno("got_object_idset_alloc");
1374 drop = got_object_idset_alloc();
1376 err = got_error_from_errno("got_object_idset_alloc");
1380 skip = got_object_idset_alloc();
1382 err = got_error_from_errno("got_object_idset_alloc");
1386 for (i = 0; i < nhead; i++) {
1387 struct got_object_id *id = head[i];
1390 err = queue_commit_or_tag_id(id, COLOR_KEEP, &ids, repo);
1395 for (i = 0; i < ntail; i++) {
1396 struct got_object_id *id = tail[i];
1399 err = queue_commit_or_tag_id(id, COLOR_DROP, &ids, repo);
1404 err = paint_commits(ncolored, &ids, nhead + ntail,
1405 keep, drop, skip, repo, progress_cb, progress_arg, rl,
1406 cancel_cb, cancel_arg);
1410 nkeep = got_object_idset_num_elements(keep);
1412 struct append_id_arg arg;
1413 arg.array = calloc(nkeep, sizeof(struct got_object_id *));
1414 if (arg.array == NULL) {
1415 err = got_error_from_errno("calloc");
1421 err = got_object_idset_for_each(keep, append_id, &arg);
1427 *nres = arg.idx + 1;
1430 got_object_idset_free(keep);
1431 got_object_idset_free(drop);
1433 got_object_idset_free(skip);
1434 got_object_id_queue_free(&ids);
1438 static const struct got_error *
1439 load_object_ids(int *ncolored, int *nfound, int *ntrees,
1440 struct got_object_idset *idset, struct got_object_id **theirs, int ntheirs,
1441 struct got_object_id **ours, int nours, struct got_repository *repo,
1442 int loose_obj_only, got_pack_progress_cb progress_cb, void *progress_arg,
1443 struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1445 const struct got_error *err = NULL;
1446 struct got_object_id **ids = NULL;
1447 int i, nobj = 0, obj_type;
1448 struct got_object_idset *idset_exclude;
1450 idset_exclude = got_object_idset_alloc();
1451 if (idset_exclude == NULL)
1452 return got_error_from_errno("got_object_idset_alloc");
1458 err = findtwixt(&ids, &nobj, ncolored, ours, nours, theirs, ntheirs,
1459 repo, progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1463 for (i = 0; i < ntheirs; i++) {
1464 struct got_object_id *id = theirs[i];
1467 err = got_object_get_type(&obj_type, repo, id);
1470 if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1471 err = load_commit(0, idset, idset_exclude, id, repo,
1472 loose_obj_only, ncolored, nfound, ntrees,
1473 progress_cb, progress_arg, rl,
1474 cancel_cb, cancel_arg);
1477 } else if (obj_type == GOT_OBJ_TYPE_TAG) {
1478 err = load_tag(0, idset, idset_exclude, id, repo,
1479 loose_obj_only, ncolored, nfound, ntrees,
1480 progress_cb, progress_arg, rl,
1481 cancel_cb, cancel_arg);
1487 for (i = 0; i < nobj; i++) {
1488 err = load_commit(1, idset, idset_exclude,
1489 ids[i], repo, loose_obj_only, ncolored, nfound, ntrees,
1490 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1495 for (i = 0; i < nours; i++) {
1496 struct got_object_id *id = ours[i];
1497 struct got_pack_meta *m;
1500 m = got_object_idset_get(idset, id);
1502 err = got_object_get_type(&obj_type, repo, id);
1506 obj_type = m->obj_type;
1507 if (obj_type != GOT_OBJ_TYPE_TAG)
1509 err = load_tag(1, idset, idset_exclude, id, repo,
1510 loose_obj_only, ncolored, nfound, ntrees,
1511 progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1516 for (i = 0; i < nobj; i++) {
1520 got_object_idset_free(idset_exclude);
1524 const struct got_error *
1525 hwrite(FILE *f, void *buf, off_t len, SHA1_CTX *ctx)
1529 SHA1Update(ctx, buf, len);
1530 n = fwrite(buf, 1, len, f);
1532 return got_ferror(f, GOT_ERR_IO);
1536 const struct got_error *
1537 hcopy(FILE *fsrc, FILE *fdst, off_t len, SHA1_CTX *ctx)
1539 unsigned char buf[65536];
1543 while (remain > 0) {
1544 size_t copylen = MIN(sizeof(buf), remain);
1545 n = fread(buf, 1, copylen, fsrc);
1547 return got_ferror(fsrc, GOT_ERR_IO);
1548 SHA1Update(ctx, buf, copylen);
1549 n = fwrite(buf, 1, copylen, fdst);
1551 return got_ferror(fdst, GOT_ERR_IO);
1558 const struct got_error *
1559 hcopy_mmap(uint8_t *src, off_t src_offset, size_t src_size,
1560 FILE *fdst, off_t len, SHA1_CTX *ctx)
1564 if (src_offset + len > src_size)
1565 return got_error(GOT_ERR_RANGE);
1567 SHA1Update(ctx, src + src_offset, len);
1568 n = fwrite(src + src_offset, 1, len, fdst);
1570 return got_ferror(fdst, GOT_ERR_IO);
1576 putbe32(char *b, uint32_t n)
1585 write_order_cmp(const void *pa, const void *pb)
1587 struct got_pack_meta *a, *b, *ahd, *bhd;
1589 a = *(struct got_pack_meta **)pa;
1590 b = *(struct got_pack_meta **)pb;
1591 ahd = (a->head == NULL) ? a : a->head;
1592 bhd = (b->head == NULL) ? b : b->head;
1593 if (bhd->mtime < ahd->mtime)
1595 if (bhd->mtime > ahd->mtime)
1601 if (a->nchain != b->nchain)
1602 return a->nchain - b->nchain;
1603 if (a->mtime < b->mtime)
1605 if (a->mtime > b->mtime)
1607 return got_object_id_cmp(&a->id, &b->id);
1611 reuse_write_order_cmp(const void *pa, const void *pb)
1613 struct got_pack_meta *a, *b;
1615 a = *(struct got_pack_meta **)pa;
1616 b = *(struct got_pack_meta **)pb;
1618 if (a->reused_delta_offset < b->reused_delta_offset)
1620 if (a->reused_delta_offset > b->reused_delta_offset)
1625 static const struct got_error *
1626 packhdr(int *hdrlen, char *hdr, size_t bufsize, int obj_type, size_t len)
1632 hdr[0] = obj_type << 4;
1633 hdr[0] |= len & 0xf;
1635 for (i = 1; len != 0; i++){
1637 return got_error(GOT_ERR_NO_SPACE);
1638 hdr[i - 1] |= GOT_DELTA_SIZE_MORE;
1639 hdr[i] = len & GOT_DELTA_SIZE_VAL_MASK;
1640 len >>= GOT_DELTA_SIZE_SHIFT;
1648 packoff(char *hdr, off_t off)
1653 rbuf[0] = off & GOT_DELTA_SIZE_VAL_MASK;
1654 for (i = 1; (off >>= GOT_DELTA_SIZE_SHIFT) != 0; i++) {
1655 rbuf[i] = (--off & GOT_DELTA_SIZE_VAL_MASK) |
1656 GOT_DELTA_SIZE_MORE;
1661 hdr[j++] = rbuf[--i];
1665 static const struct got_error *
1666 deltahdr(off_t *packfile_size, SHA1_CTX *ctx, FILE *packfile,
1667 struct got_pack_meta *m)
1669 const struct got_error *err;
1673 if (m->prev->off != 0) {
1674 err = packhdr(&nh, buf, sizeof(buf),
1675 GOT_OBJ_TYPE_OFFSET_DELTA, m->delta_len);
1678 nh += packoff(buf + nh, m->off - m->prev->off);
1679 err = hwrite(packfile, buf, nh, ctx);
1682 *packfile_size += nh;
1684 err = packhdr(&nh, buf, sizeof(buf),
1685 GOT_OBJ_TYPE_REF_DELTA, m->delta_len);
1688 err = hwrite(packfile, buf, nh, ctx);
1691 *packfile_size += nh;
1692 err = hwrite(packfile, m->prev->id.sha1,
1693 sizeof(m->prev->id.sha1), ctx);
1696 *packfile_size += sizeof(m->prev->id.sha1);
1702 static const struct got_error *
1703 write_packed_object(off_t *packfile_size, FILE *packfile,
1704 FILE *delta_cache, uint8_t *delta_cache_map, size_t delta_cache_size,
1705 struct got_pack_meta *m, int *outfd, SHA1_CTX *ctx,
1706 struct got_repository *repo)
1708 const struct got_error *err = NULL;
1709 struct got_deflate_checksum csum;
1712 struct got_raw_object *raw = NULL;
1715 csum.output_sha1 = ctx;
1716 csum.output_crc = NULL;
1718 m->off = ftello(packfile);
1719 if (m->delta_len == 0) {
1720 err = got_object_raw_open(&raw, outfd, repo, &m->id);
1723 err = packhdr(&nh, buf, sizeof(buf),
1724 m->obj_type, raw->size);
1727 err = hwrite(packfile, buf, nh, ctx);
1730 *packfile_size += nh;
1731 if (raw->f == NULL) {
1732 err = got_deflate_to_file_mmap(&outlen,
1733 raw->data + raw->hdrlen, 0, raw->size,
1738 if (fseeko(raw->f, raw->hdrlen, SEEK_SET)
1740 err = got_error_from_errno("fseeko");
1743 err = got_deflate_to_file(&outlen, raw->f,
1744 raw->size, packfile, &csum);
1748 *packfile_size += outlen;
1749 got_object_raw_close(raw);
1751 } else if (m->delta_buf) {
1752 err = deltahdr(packfile_size, ctx, packfile, m);
1755 err = hwrite(packfile, m->delta_buf,
1756 m->delta_compressed_len, ctx);
1759 *packfile_size += m->delta_compressed_len;
1761 m->delta_buf = NULL;
1762 } else if (delta_cache_map) {
1763 err = deltahdr(packfile_size, ctx, packfile, m);
1766 err = hcopy_mmap(delta_cache_map, m->delta_offset,
1767 delta_cache_size, packfile, m->delta_compressed_len,
1771 *packfile_size += m->delta_compressed_len;
1773 if (fseeko(delta_cache, m->delta_offset, SEEK_SET)
1775 err = got_error_from_errno("fseeko");
1778 err = deltahdr(packfile_size, ctx, packfile, m);
1781 err = hcopy(delta_cache, packfile,
1782 m->delta_compressed_len, ctx);
1785 *packfile_size += m->delta_compressed_len;
1789 got_object_raw_close(raw);
1793 static const struct got_error *
1794 genpack(uint8_t *pack_sha1, FILE *packfile, FILE *delta_cache,
1795 struct got_pack_meta **deltify, int ndeltify,
1796 struct got_pack_meta **reuse, int nreuse,
1797 int ncolored, int nfound, int ntrees, int nours,
1798 struct got_repository *repo,
1799 got_pack_progress_cb progress_cb, void *progress_arg,
1800 struct got_ratelimit *rl,
1801 got_cancel_cb cancel_cb, void *cancel_arg)
1803 const struct got_error *err = NULL;
1806 struct got_pack_meta *m;
1809 off_t packfile_size = 0;
1811 int delta_cache_fd = -1;
1812 uint8_t *delta_cache_map = NULL;
1813 size_t delta_cache_size = 0;
1817 #ifndef GOT_PACK_NO_MMAP
1818 delta_cache_fd = dup(fileno(delta_cache));
1819 if (delta_cache_fd != -1) {
1821 if (fstat(delta_cache_fd, &sb) == -1) {
1822 err = got_error_from_errno("fstat");
1825 if (sb.st_size > 0 && sb.st_size <= SIZE_MAX) {
1826 delta_cache_map = mmap(NULL, sb.st_size,
1827 PROT_READ, MAP_PRIVATE, delta_cache_fd, 0);
1828 if (delta_cache_map == MAP_FAILED) {
1829 if (errno != ENOMEM) {
1830 err = got_error_from_errno("mmap");
1833 delta_cache_map = NULL; /* fallback on stdio */
1835 delta_cache_size = (size_t)sb.st_size;
1839 err = hwrite(packfile, "PACK", 4, &ctx);
1842 putbe32(buf, GOT_PACKFILE_VERSION);
1843 err = hwrite(packfile, buf, 4, &ctx);
1846 putbe32(buf, ndeltify + nreuse);
1847 err = hwrite(packfile, buf, 4, &ctx);
1851 qsort(deltify, ndeltify, sizeof(struct got_pack_meta *),
1853 for (i = 0; i < ndeltify; i++) {
1854 err = report_progress(progress_cb, progress_arg, rl,
1855 ncolored, nfound, ntrees, packfile_size, nours,
1856 ndeltify + nreuse, ndeltify + nreuse, i);
1860 err = write_packed_object(&packfile_size, packfile,
1861 delta_cache, delta_cache_map, delta_cache_size,
1862 m, &outfd, &ctx, repo);
1867 qsort(reuse, nreuse, sizeof(struct got_pack_meta *),
1868 reuse_write_order_cmp);
1869 for (i = 0; i < nreuse; i++) {
1870 err = report_progress(progress_cb, progress_arg, rl,
1871 ncolored, nfound, ntrees, packfile_size, nours,
1872 ndeltify + nreuse, ndeltify + nreuse, ndeltify + i);
1876 err = write_packed_object(&packfile_size, packfile,
1877 delta_cache, delta_cache_map, delta_cache_size,
1878 m, &outfd, &ctx, repo);
1883 SHA1Final(pack_sha1, &ctx);
1884 n = fwrite(pack_sha1, 1, SHA1_DIGEST_LENGTH, packfile);
1885 if (n != SHA1_DIGEST_LENGTH)
1886 err = got_ferror(packfile, GOT_ERR_IO);
1887 packfile_size += SHA1_DIGEST_LENGTH;
1888 packfile_size += sizeof(struct got_packfile_hdr);
1890 err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1891 packfile_size, nours, ndeltify + nreuse,
1892 ndeltify + nreuse, ndeltify + nreuse);
1897 if (outfd != -1 && close(outfd) == -1 && err == NULL)
1898 err = got_error_from_errno("close");
1899 if (delta_cache_map && munmap(delta_cache_map, delta_cache_size) == -1)
1900 err = got_error_from_errno("munmap");
1901 if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
1902 err = got_error_from_errno("close");
1906 static const struct got_error *
1907 add_meta_idset_cb(struct got_object_id *id, void *data, void *arg)
1909 struct got_pack_meta *m = data;
1910 struct got_pack_metavec *v = arg;
1912 if (m->have_reused_delta)
1915 return add_meta(m, v);
1918 const struct got_error *
1919 got_pack_create(uint8_t *packsha1, FILE *packfile,
1920 struct got_object_id **theirs, int ntheirs,
1921 struct got_object_id **ours, int nours,
1922 struct got_repository *repo, int loose_obj_only, int allow_empty,
1923 got_pack_progress_cb progress_cb, void *progress_arg,
1924 got_cancel_cb cancel_cb, void *cancel_arg)
1926 const struct got_error *err;
1927 int delta_cache_fd = -1;
1928 FILE *delta_cache = NULL;
1929 struct got_object_idset *idset;
1930 struct got_ratelimit rl;
1931 struct got_pack_metavec deltify, reuse;
1932 int ncolored = 0, nfound = 0, ntrees = 0;
1935 memset(&deltify, 0, sizeof(deltify));
1936 memset(&reuse, 0, sizeof(reuse));
1938 got_ratelimit_init(&rl, 0, 500);
1940 idset = got_object_idset_alloc();
1942 return got_error_from_errno("got_object_idset_alloc");
1944 err = load_object_ids(&ncolored, &nfound, &ntrees, idset, theirs,
1945 ntheirs, ours, nours, repo, loose_obj_only,
1946 progress_cb, progress_arg, &rl, cancel_cb, cancel_arg);
1951 err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1952 0L, nours, got_object_idset_num_elements(idset), 0, 0);
1957 if (got_object_idset_num_elements(idset) == 0 && !allow_empty) {
1958 err = got_error(GOT_ERR_CANNOT_PACK);
1962 delta_cache_fd = got_opentempfd();
1963 if (delta_cache_fd == -1) {
1964 err = got_error_from_errno("got_opentemp");
1969 reuse.meta = calloc(reuse.metasz,
1970 sizeof(struct got_pack_meta *));
1971 if (reuse.meta == NULL) {
1972 err = got_error_from_errno("calloc");
1976 err = search_deltas(&reuse, idset, delta_cache_fd, ncolored, nfound,
1977 ntrees, nours, repo, progress_cb, progress_arg, &rl,
1978 cancel_cb, cancel_arg);
1982 delta_cache = fdopen(delta_cache_fd, "a+");
1983 if (delta_cache == NULL) {
1984 err = got_error_from_errno("fdopen");
1987 delta_cache_fd = -1;
1989 if (fseeko(delta_cache, 0L, SEEK_END) == -1) {
1990 err = got_error_from_errno("fseeko");
1994 ndeltify = got_object_idset_num_elements(idset) - reuse.nmeta;
1996 deltify.meta = calloc(ndeltify, sizeof(struct got_pack_meta *));
1997 if (deltify.meta == NULL) {
1998 err = got_error_from_errno("calloc");
2001 deltify.metasz = ndeltify;
2003 err = got_object_idset_for_each(idset, add_meta_idset_cb,
2007 if (deltify.nmeta > 0) {
2008 err = pick_deltas(deltify.meta, deltify.nmeta,
2009 ncolored, nfound, ntrees, nours, reuse.nmeta,
2010 delta_cache, repo, progress_cb, progress_arg, &rl,
2011 cancel_cb, cancel_arg);
2017 if (fflush(delta_cache) == EOF) {
2018 err = got_error_from_errno("fflush");
2021 err = genpack(packsha1, packfile, delta_cache, deltify.meta,
2022 deltify.nmeta, reuse.meta, reuse.nmeta, ncolored, nfound, ntrees,
2023 nours, repo, progress_cb, progress_arg, &rl,
2024 cancel_cb, cancel_arg);
2028 free_nmeta(deltify.meta, deltify.nmeta);
2029 free_nmeta(reuse.meta, reuse.nmeta);
2030 got_object_idset_free(idset);
2031 if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
2032 err = got_error_from_errno("close");
2033 if (delta_cache && fclose(delta_cache) == EOF && err == NULL)
2034 err = got_error_from_errno("fclose");