2 e6bcace5 2021-06-22 stsp * Copyright (c) 2020 Ori Bernstein
3 e6bcace5 2021-06-22 stsp * Copyright (c) 2021 Stefan Sperling <stsp@openbsd.org>
5 e6bcace5 2021-06-22 stsp * Permission to use, copy, modify, and distribute this software for any
6 e6bcace5 2021-06-22 stsp * purpose with or without fee is hereby granted, provided that the above
7 e6bcace5 2021-06-22 stsp * copyright notice and this permission notice appear in all copies.
9 e6bcace5 2021-06-22 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 e6bcace5 2021-06-22 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 e6bcace5 2021-06-22 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 e6bcace5 2021-06-22 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 e6bcace5 2021-06-22 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 e6bcace5 2021-06-22 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 e6bcace5 2021-06-22 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 08736cf9 2021-06-23 stsp #include <sys/types.h>
19 08736cf9 2021-06-23 stsp #include <sys/uio.h>
20 e6bcace5 2021-06-22 stsp #include <sys/stat.h>
22 08736cf9 2021-06-23 stsp #include <stdint.h>
23 e6bcace5 2021-06-22 stsp #include <stdio.h>
24 e6bcace5 2021-06-22 stsp #include <stdlib.h>
25 e6bcace5 2021-06-22 stsp #include <string.h>
26 e6bcace5 2021-06-22 stsp #include <limits.h>
27 e6bcace5 2021-06-22 stsp #include <zlib.h>
29 e6bcace5 2021-06-22 stsp #include "got_error.h"
30 e6bcace5 2021-06-22 stsp #include "got_cancel.h"
31 e6bcace5 2021-06-22 stsp #include "got_object.h"
32 05118f5a 2021-06-22 stsp #include "got_reference.h"
33 05118f5a 2021-06-22 stsp #include "got_repository_admin.h"
35 e6bcace5 2021-06-22 stsp #include "got_lib_deltify.h"
36 e6bcace5 2021-06-22 stsp #include "got_lib_delta.h"
37 e6bcace5 2021-06-22 stsp #include "got_lib_object.h"
38 e6bcace5 2021-06-22 stsp #include "got_lib_object_idset.h"
39 05118f5a 2021-06-22 stsp #include "got_lib_object_cache.h"
40 e6bcace5 2021-06-22 stsp #include "got_lib_deflate.h"
41 e6bcace5 2021-06-22 stsp #include "got_lib_pack.h"
42 05118f5a 2021-06-22 stsp #include "got_lib_privsep.h"
43 05118f5a 2021-06-22 stsp #include "got_lib_repository.h"
46 e6bcace5 2021-06-22 stsp #define MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
49 e6bcace5 2021-06-22 stsp struct got_pack_meta {
50 e6bcace5 2021-06-22 stsp struct got_object_id id;
52 e6bcace5 2021-06-22 stsp int obj_type;
53 e6bcace5 2021-06-22 stsp time_t mtime;
55 e6bcace5 2021-06-22 stsp /* The best delta we picked */
56 e6bcace5 2021-06-22 stsp struct got_pack_meta *head;
57 e6bcace5 2021-06-22 stsp struct got_pack_meta *prev;
58 e6bcace5 2021-06-22 stsp struct got_delta_instruction *deltas;
59 e6bcace5 2021-06-22 stsp int ndeltas;
62 e6bcace5 2021-06-22 stsp /* Only used for delta window */
63 e6bcace5 2021-06-22 stsp struct got_delta_table *dtab;
65 e6bcace5 2021-06-22 stsp /* Only used for writing offset deltas */
69 e6bcace5 2021-06-22 stsp struct got_pack_metavec {
70 e6bcace5 2021-06-22 stsp struct got_pack_meta **meta;
75 e6bcace5 2021-06-22 stsp static const struct got_error *
76 e6bcace5 2021-06-22 stsp alloc_meta(struct got_pack_meta **new, struct got_object_id *id,
77 e6bcace5 2021-06-22 stsp const char *path, int obj_type, time_t mtime)
79 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
80 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
82 e6bcace5 2021-06-22 stsp *new = NULL;
84 e6bcace5 2021-06-22 stsp m = calloc(1, sizeof(*m));
85 e6bcace5 2021-06-22 stsp if (m == NULL)
86 e6bcace5 2021-06-22 stsp return got_error_from_errno("malloc");
88 e6bcace5 2021-06-22 stsp memcpy(&m->id, id, sizeof(m->id));
90 e6bcace5 2021-06-22 stsp m->path = strdup(path);
91 e6bcace5 2021-06-22 stsp if (m->path == NULL) {
92 e6bcace5 2021-06-22 stsp err = got_error_from_errno("strdup");
97 e6bcace5 2021-06-22 stsp m->obj_type = obj_type;
98 e6bcace5 2021-06-22 stsp m->mtime = mtime;
100 e6bcace5 2021-06-22 stsp return NULL;
103 e6bcace5 2021-06-22 stsp static void
104 e6bcace5 2021-06-22 stsp clear_meta(struct got_pack_meta *meta)
106 e6bcace5 2021-06-22 stsp if (meta == NULL)
108 e6bcace5 2021-06-22 stsp free(meta->deltas);
109 e6bcace5 2021-06-22 stsp meta->deltas = NULL;
110 e6bcace5 2021-06-22 stsp free(meta->path);
111 e6bcace5 2021-06-22 stsp meta->path = NULL;
114 e6bcace5 2021-06-22 stsp static void
115 e6bcace5 2021-06-22 stsp free_nmeta(struct got_pack_meta **meta, int nmeta)
119 e6bcace5 2021-06-22 stsp for (i = 0; i < nmeta; i++)
120 e6bcace5 2021-06-22 stsp clear_meta(meta[i]);
121 e6bcace5 2021-06-22 stsp free(meta);
125 e6bcace5 2021-06-22 stsp delta_order_cmp(const void *pa, const void *pb)
127 e6bcace5 2021-06-22 stsp struct got_pack_meta *a, *b;
130 e6bcace5 2021-06-22 stsp a = *(struct got_pack_meta **)pa;
131 e6bcace5 2021-06-22 stsp b = *(struct got_pack_meta **)pb;
133 e6bcace5 2021-06-22 stsp if (a->obj_type != b->obj_type)
134 e6bcace5 2021-06-22 stsp return a->obj_type - b->obj_type;
135 e6bcace5 2021-06-22 stsp cmp = strcmp(a->path, b->path);
136 e6bcace5 2021-06-22 stsp if (cmp != 0)
137 e6bcace5 2021-06-22 stsp return cmp;
138 e6bcace5 2021-06-22 stsp if (a->mtime != b->mtime)
139 e6bcace5 2021-06-22 stsp return a->mtime - b->mtime;
140 e6bcace5 2021-06-22 stsp return got_object_id_cmp(&a->id, &b->id);
144 e6bcace5 2021-06-22 stsp delta_size(struct got_delta_instruction *deltas, int ndeltas)
146 e6bcace5 2021-06-22 stsp int i, size = 32;
147 e6bcace5 2021-06-22 stsp for (i = 0; i < ndeltas; i++) {
148 e6bcace5 2021-06-22 stsp if (deltas[i].copy)
149 e6bcace5 2021-06-22 stsp size += GOT_DELTA_SIZE_SHIFT;
151 e6bcace5 2021-06-22 stsp size += deltas[i].len + 1;
153 e6bcace5 2021-06-22 stsp return size;
157 e6bcace5 2021-06-22 stsp static const struct got_error *
158 05118f5a 2021-06-22 stsp pick_deltas(struct got_pack_meta **meta, int nmeta, int nours,
159 05118f5a 2021-06-22 stsp struct got_repository *repo,
160 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
161 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
163 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
164 e6bcace5 2021-06-22 stsp struct got_pack_meta *m = NULL, *base = NULL;
165 e6bcace5 2021-06-22 stsp struct got_raw_object *raw = NULL, *base_raw = NULL;
166 e6bcace5 2021-06-22 stsp struct got_delta_instruction *deltas;
167 05118f5a 2021-06-22 stsp int i, j, size, ndeltas, best;
168 e6bcace5 2021-06-22 stsp const int max_base_candidates = 10;
170 e6bcace5 2021-06-22 stsp qsort(meta, nmeta, sizeof(struct got_pack_meta *), delta_order_cmp);
171 e6bcace5 2021-06-22 stsp for (i = 0; i < nmeta; i++) {
172 e6bcace5 2021-06-22 stsp if (cancel_cb) {
173 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
177 05118f5a 2021-06-22 stsp if (progress_cb) {
178 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours, nmeta, i, 0);
182 e6bcace5 2021-06-22 stsp m = meta[i];
183 e6bcace5 2021-06-22 stsp m->deltas = NULL;
184 e6bcace5 2021-06-22 stsp m->ndeltas = 0;
186 e6bcace5 2021-06-22 stsp if (m->obj_type == GOT_OBJ_TYPE_COMMIT ||
187 e6bcace5 2021-06-22 stsp m->obj_type == GOT_OBJ_TYPE_TAG)
190 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&raw, repo, &m->id, 8192);
194 e6bcace5 2021-06-22 stsp err = got_deltify_init(&m->dtab, raw->f, raw->hdrlen,
195 e6bcace5 2021-06-22 stsp raw->size + raw->hdrlen);
199 e6bcace5 2021-06-22 stsp if (i > max_base_candidates) {
200 e6bcace5 2021-06-22 stsp struct got_pack_meta *n = NULL;
201 e6bcace5 2021-06-22 stsp n = meta[i - (max_base_candidates + 1)];
202 e6bcace5 2021-06-22 stsp got_deltify_free(n->dtab);
203 e6bcace5 2021-06-22 stsp n->dtab = NULL;
206 e6bcace5 2021-06-22 stsp best = raw->size;
207 e6bcace5 2021-06-22 stsp for (j = MAX(0, i - max_base_candidates); j < i; j++) {
208 e6bcace5 2021-06-22 stsp if (cancel_cb) {
209 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
213 e6bcace5 2021-06-22 stsp base = meta[j];
214 e6bcace5 2021-06-22 stsp /* long chains make unpacking slow, avoid such bases */
215 e6bcace5 2021-06-22 stsp if (base->nchain >= 128 ||
216 e6bcace5 2021-06-22 stsp base->obj_type != m->obj_type)
219 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&base_raw, repo, &base->id,
223 e6bcace5 2021-06-22 stsp err = got_deltify(&deltas, &ndeltas,
224 e6bcace5 2021-06-22 stsp raw->f, raw->hdrlen, raw->size + raw->hdrlen,
225 e6bcace5 2021-06-22 stsp base->dtab, base_raw->f, base_raw->hdrlen,
226 e6bcace5 2021-06-22 stsp base_raw->size + base_raw->hdrlen);
227 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
228 e6bcace5 2021-06-22 stsp base_raw = NULL;
232 e6bcace5 2021-06-22 stsp size = delta_size(deltas, ndeltas);
233 e6bcace5 2021-06-22 stsp if (size + 32 < best){
235 e6bcace5 2021-06-22 stsp * if we already picked a best delta,
236 e6bcace5 2021-06-22 stsp * replace it.
238 e6bcace5 2021-06-22 stsp free(m->deltas);
239 e6bcace5 2021-06-22 stsp best = size;
240 e6bcace5 2021-06-22 stsp m->deltas = deltas;
241 e6bcace5 2021-06-22 stsp m->ndeltas = ndeltas;
242 e6bcace5 2021-06-22 stsp m->nchain = base->nchain + 1;
243 e6bcace5 2021-06-22 stsp m->prev = base;
244 e6bcace5 2021-06-22 stsp m->head = base->head;
245 e6bcace5 2021-06-22 stsp if (m->head == NULL)
246 e6bcace5 2021-06-22 stsp m->head = base;
248 e6bcace5 2021-06-22 stsp free(deltas);
249 e6bcace5 2021-06-22 stsp deltas = NULL;
250 e6bcace5 2021-06-22 stsp ndeltas = 0;
254 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
255 e6bcace5 2021-06-22 stsp raw = NULL;
258 e6bcace5 2021-06-22 stsp for (i = MAX(0, nmeta - max_base_candidates); i < nmeta; i++) {
259 e6bcace5 2021-06-22 stsp got_deltify_free(meta[i]->dtab);
260 e6bcace5 2021-06-22 stsp meta[i]->dtab = NULL;
263 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
264 e6bcace5 2021-06-22 stsp if (base_raw)
265 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
266 e6bcace5 2021-06-22 stsp return err;
269 e6bcace5 2021-06-22 stsp static const struct got_error *
270 05118f5a 2021-06-22 stsp search_packidx(int *found, struct got_object_id *id,
271 05118f5a 2021-06-22 stsp struct got_repository *repo)
273 05118f5a 2021-06-22 stsp const struct got_error *err = NULL;
274 05118f5a 2021-06-22 stsp struct got_packidx *packidx = NULL;
277 05118f5a 2021-06-22 stsp *found = 0;
279 05118f5a 2021-06-22 stsp err = got_repo_search_packidx(&packidx, &idx, repo, id);
280 05118f5a 2021-06-22 stsp if (err == NULL)
281 05118f5a 2021-06-22 stsp *found = 1; /* object is already packed */
282 05118f5a 2021-06-22 stsp else if (err->code == GOT_ERR_NO_OBJ)
283 05118f5a 2021-06-22 stsp err = NULL;
284 05118f5a 2021-06-22 stsp return err;
287 07165b17 2021-07-01 stsp static const int obj_types[] = {
288 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_ANY,
289 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_COMMIT,
290 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_TREE,
291 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_BLOB,
292 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_TAG,
293 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_OFFSET_DELTA,
294 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_REF_DELTA
297 05118f5a 2021-06-22 stsp static const struct got_error *
298 e6bcace5 2021-06-22 stsp add_meta(struct got_pack_metavec *v, struct got_object_idset *idset,
299 e6bcace5 2021-06-22 stsp struct got_object_id *id, const char *path, int obj_type,
300 05118f5a 2021-06-22 stsp time_t mtime, int loose_obj_only, struct got_repository *repo)
302 e6bcace5 2021-06-22 stsp const struct got_error *err;
303 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
305 05118f5a 2021-06-22 stsp if (loose_obj_only) {
306 05118f5a 2021-06-22 stsp int is_packed;
307 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
309 05118f5a 2021-06-22 stsp return err;
310 05118f5a 2021-06-22 stsp if (is_packed)
311 05118f5a 2021-06-22 stsp return NULL;
314 07165b17 2021-07-01 stsp err = got_object_idset_add(idset, id, (void *)&obj_types[obj_type]);
316 e6bcace5 2021-06-22 stsp return err;
318 e6bcace5 2021-06-22 stsp if (v == NULL)
319 e6bcace5 2021-06-22 stsp return NULL;
321 e6bcace5 2021-06-22 stsp err = alloc_meta(&m, id, path, obj_type, mtime);
325 e6bcace5 2021-06-22 stsp if (v->nmeta == v->metasz){
326 e6bcace5 2021-06-22 stsp size_t newsize = 2 * v->metasz;
327 e6bcace5 2021-06-22 stsp struct got_pack_meta **new;
328 e6bcace5 2021-06-22 stsp new = reallocarray(v->meta, newsize, sizeof(*new));
329 e6bcace5 2021-06-22 stsp if (new == NULL) {
330 e6bcace5 2021-06-22 stsp err = got_error_from_errno("reallocarray");
333 e6bcace5 2021-06-22 stsp v->meta = new;
334 e6bcace5 2021-06-22 stsp v->metasz = newsize;
338 e6bcace5 2021-06-22 stsp clear_meta(m);
341 e6bcace5 2021-06-22 stsp v->meta[v->nmeta++] = m;
343 e6bcace5 2021-06-22 stsp return err;
346 e6bcace5 2021-06-22 stsp static const struct got_error *
347 e6bcace5 2021-06-22 stsp load_tree_entries(struct got_object_id_queue *ids, struct got_pack_metavec *v,
348 e6bcace5 2021-06-22 stsp struct got_object_idset *idset, struct got_object_id *tree_id,
349 e6bcace5 2021-06-22 stsp const char *dpath, time_t mtime, struct got_repository *repo,
350 05118f5a 2021-06-22 stsp int loose_obj_only, got_cancel_cb cancel_cb, void *cancel_arg)
352 e6bcace5 2021-06-22 stsp const struct got_error *err;
353 e6bcace5 2021-06-22 stsp struct got_tree_object *tree;
354 e6bcace5 2021-06-22 stsp char *p = NULL;
357 e6bcace5 2021-06-22 stsp err = got_object_open_as_tree(&tree, repo, tree_id);
359 e6bcace5 2021-06-22 stsp return err;
361 e6bcace5 2021-06-22 stsp for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
362 e6bcace5 2021-06-22 stsp struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
363 e6bcace5 2021-06-22 stsp struct got_object_id *id = got_tree_entry_get_id(e);
364 e6bcace5 2021-06-22 stsp mode_t mode = got_tree_entry_get_mode(e);
366 e6bcace5 2021-06-22 stsp if (cancel_cb) {
367 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
372 08511b5e 2021-09-24 thomas if (got_object_tree_entry_is_submodule(e) ||
373 e6bcace5 2021-06-22 stsp got_object_idset_contains(idset, id))
376 e6bcace5 2021-06-22 stsp if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
377 e6bcace5 2021-06-22 stsp got_tree_entry_get_name(e)) == -1) {
378 e6bcace5 2021-06-22 stsp err = got_error_from_errno("asprintf");
382 e6bcace5 2021-06-22 stsp if (S_ISDIR(mode)) {
383 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
384 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
387 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(ids, qid, entry);
388 08511b5e 2021-09-24 thomas } else if (S_ISREG(mode) || S_ISLNK(mode)) {
389 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, id, p, GOT_OBJ_TYPE_BLOB,
390 05118f5a 2021-06-22 stsp mtime, loose_obj_only, repo);
398 e6bcace5 2021-06-22 stsp got_object_tree_close(tree);
400 e6bcace5 2021-06-22 stsp return err;
403 e6bcace5 2021-06-22 stsp static const struct got_error *
404 e6bcace5 2021-06-22 stsp load_tree(struct got_pack_metavec *v, struct got_object_idset *idset,
405 e6bcace5 2021-06-22 stsp struct got_object_id *tree_id, const char *dpath, time_t mtime,
406 05118f5a 2021-06-22 stsp int loose_obj_only, struct got_repository *repo,
407 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
409 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
410 e6bcace5 2021-06-22 stsp struct got_object_id_queue tree_ids;
411 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
413 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, tree_id))
414 e6bcace5 2021-06-22 stsp return NULL;
416 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, tree_id);
418 e6bcace5 2021-06-22 stsp return err;
420 dbdddfee 2021-06-23 naddy STAILQ_INIT(&tree_ids);
421 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(&tree_ids, qid, entry);
423 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&tree_ids)) {
424 e6bcace5 2021-06-22 stsp if (cancel_cb) {
425 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
430 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(&tree_ids);
431 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&tree_ids, entry);
433 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, qid->id)) {
434 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
438 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, qid->id, dpath, GOT_OBJ_TYPE_TREE,
439 05118f5a 2021-06-22 stsp mtime, loose_obj_only, repo);
441 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
445 e6bcace5 2021-06-22 stsp err = load_tree_entries(&tree_ids, v, idset, qid->id, dpath,
446 05118f5a 2021-06-22 stsp mtime, repo, loose_obj_only, cancel_cb, cancel_arg);
447 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
452 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&tree_ids);
453 e6bcace5 2021-06-22 stsp return err;
456 e6bcace5 2021-06-22 stsp static const struct got_error *
457 e6bcace5 2021-06-22 stsp load_commit(struct got_pack_metavec *v, struct got_object_idset *idset,
458 05118f5a 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
459 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
461 e6bcace5 2021-06-22 stsp const struct got_error *err;
462 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
464 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, id))
465 e6bcace5 2021-06-22 stsp return NULL;
467 05118f5a 2021-06-22 stsp if (loose_obj_only) {
468 05118f5a 2021-06-22 stsp int is_packed;
469 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
471 05118f5a 2021-06-22 stsp return err;
472 05118f5a 2021-06-22 stsp if (is_packed)
473 05118f5a 2021-06-22 stsp return NULL;
476 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, id);
478 e6bcace5 2021-06-22 stsp return err;
480 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, id, "", GOT_OBJ_TYPE_COMMIT,
481 05118f5a 2021-06-22 stsp got_object_commit_get_committer_time(commit),
482 05118f5a 2021-06-22 stsp loose_obj_only, repo);
486 e6bcace5 2021-06-22 stsp err = load_tree(v, idset, got_object_commit_get_tree_id(commit),
487 05118f5a 2021-06-22 stsp "", got_object_commit_get_committer_time(commit),
488 05118f5a 2021-06-22 stsp loose_obj_only, repo, cancel_cb, cancel_arg);
490 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
491 e6bcace5 2021-06-22 stsp return err;
494 05118f5a 2021-06-22 stsp static const struct got_error *
495 05118f5a 2021-06-22 stsp load_tag(struct got_pack_metavec *v, struct got_object_idset *idset,
496 05118f5a 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
497 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
499 05118f5a 2021-06-22 stsp const struct got_error *err;
500 05118f5a 2021-06-22 stsp struct got_tag_object *tag = NULL;
502 05118f5a 2021-06-22 stsp if (got_object_idset_contains(idset, id))
503 05118f5a 2021-06-22 stsp return NULL;
505 05118f5a 2021-06-22 stsp if (loose_obj_only) {
506 05118f5a 2021-06-22 stsp int is_packed;
507 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
509 05118f5a 2021-06-22 stsp return err;
510 05118f5a 2021-06-22 stsp if (is_packed)
511 05118f5a 2021-06-22 stsp return NULL;
514 05118f5a 2021-06-22 stsp err = got_object_open_as_tag(&tag, repo, id);
516 05118f5a 2021-06-22 stsp return err;
518 05118f5a 2021-06-22 stsp err = add_meta(v, idset, id, "", GOT_OBJ_TYPE_TAG,
519 05118f5a 2021-06-22 stsp got_object_tag_get_tagger_time(tag),
520 05118f5a 2021-06-22 stsp loose_obj_only, repo);
524 05118f5a 2021-06-22 stsp switch (got_object_tag_get_object_type(tag)) {
525 05118f5a 2021-06-22 stsp case GOT_OBJ_TYPE_COMMIT:
526 26960ff7 2021-09-14 stsp err = load_commit(v, idset,
527 05118f5a 2021-06-22 stsp got_object_tag_get_object_id(tag), repo,
528 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
530 05118f5a 2021-06-22 stsp case GOT_OBJ_TYPE_TREE:
531 05118f5a 2021-06-22 stsp err = load_tree(v, idset, got_object_tag_get_object_id(tag),
532 05118f5a 2021-06-22 stsp "", got_object_tag_get_tagger_time(tag),
533 05118f5a 2021-06-22 stsp loose_obj_only, repo, cancel_cb, cancel_arg);
540 05118f5a 2021-06-22 stsp got_object_tag_close(tag);
541 05118f5a 2021-06-22 stsp return err;
544 e6bcace5 2021-06-22 stsp enum findtwixt_color {
545 e6bcace5 2021-06-22 stsp COLOR_KEEP = 0,
546 e6bcace5 2021-06-22 stsp COLOR_DROP,
547 e6bcace5 2021-06-22 stsp COLOR_BLANK,
549 e6bcace5 2021-06-22 stsp static const int findtwixt_colors[] = {
550 e6bcace5 2021-06-22 stsp COLOR_KEEP,
551 e6bcace5 2021-06-22 stsp COLOR_DROP,
552 e6bcace5 2021-06-22 stsp COLOR_BLANK
555 e6bcace5 2021-06-22 stsp static const struct got_error *
556 e6bcace5 2021-06-22 stsp queue_commit_id(struct got_object_id_queue *ids, struct got_object_id *id,
557 e6bcace5 2021-06-22 stsp int color, struct got_repository *repo)
559 e6bcace5 2021-06-22 stsp const struct got_error *err;
560 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
562 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
564 e6bcace5 2021-06-22 stsp return err;
566 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(ids, qid, entry);
567 e6bcace5 2021-06-22 stsp qid->data = (void *)&findtwixt_colors[color];
568 e6bcace5 2021-06-22 stsp return NULL;
571 e6bcace5 2021-06-22 stsp static const struct got_error *
572 e6bcace5 2021-06-22 stsp drop_commit(struct got_object_idset *keep, struct got_object_idset *drop,
573 e6bcace5 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo,
574 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
576 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
577 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
578 e6bcace5 2021-06-22 stsp const struct got_object_id_queue *parents;
579 e6bcace5 2021-06-22 stsp struct got_object_id_queue ids;
580 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
582 dbdddfee 2021-06-23 naddy STAILQ_INIT(&ids);
584 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
586 e6bcace5 2021-06-22 stsp return err;
587 dbdddfee 2021-06-23 naddy STAILQ_INSERT_HEAD(&ids, qid, entry);
589 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&ids)) {
590 e6bcace5 2021-06-22 stsp if (cancel_cb) {
591 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
596 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(&ids);
597 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&ids, entry);
599 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(drop, qid->id)) {
600 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
604 07165b17 2021-07-01 stsp err = got_object_idset_add(drop, qid->id,
605 07165b17 2021-07-01 stsp (void *)&obj_types[GOT_OBJ_TYPE_COMMIT]);
607 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
611 e6bcace5 2021-06-22 stsp if (!got_object_idset_contains(keep, qid->id)) {
612 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
616 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, qid->id);
617 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
621 e6bcace5 2021-06-22 stsp parents = got_object_commit_get_parent_ids(commit);
622 e6bcace5 2021-06-22 stsp if (parents) {
623 e6bcace5 2021-06-22 stsp err = got_object_id_queue_copy(parents, &ids);
625 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
629 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
632 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&ids);
633 e6bcace5 2021-06-22 stsp return err;
636 e6bcace5 2021-06-22 stsp struct append_id_arg {
637 e6bcace5 2021-06-22 stsp struct got_object_id **array;
641 e6bcace5 2021-06-22 stsp static const struct got_error *
642 e6bcace5 2021-06-22 stsp append_id(struct got_object_id *id, void *data, void *arg)
644 e6bcace5 2021-06-22 stsp struct append_id_arg *a = arg;
646 e6bcace5 2021-06-22 stsp a->array[a->idx] = got_object_id_dup(id);
647 e6bcace5 2021-06-22 stsp if (a->array[a->idx] == NULL)
648 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_id_dup");
651 e6bcace5 2021-06-22 stsp return NULL;
654 e6bcace5 2021-06-22 stsp static const struct got_error *
655 e6bcace5 2021-06-22 stsp findtwixt(struct got_object_id ***res, int *nres,
656 e6bcace5 2021-06-22 stsp struct got_object_id **head, int nhead,
657 e6bcace5 2021-06-22 stsp struct got_object_id **tail, int ntail,
658 e6bcace5 2021-06-22 stsp struct got_repository *repo,
659 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
661 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
662 e6bcace5 2021-06-22 stsp struct got_object_id_queue ids;
663 e6bcace5 2021-06-22 stsp struct got_object_idset *keep, *drop;
664 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
665 05118f5a 2021-06-22 stsp int i, ncolor, nkeep, obj_type;
667 dbdddfee 2021-06-23 naddy STAILQ_INIT(&ids);
668 e6bcace5 2021-06-22 stsp *res = NULL;
671 e6bcace5 2021-06-22 stsp keep = got_object_idset_alloc();
672 e6bcace5 2021-06-22 stsp if (keep == NULL)
673 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_idset_alloc");
675 e6bcace5 2021-06-22 stsp drop = got_object_idset_alloc();
676 e6bcace5 2021-06-22 stsp if (drop == NULL) {
677 e6bcace5 2021-06-22 stsp err = got_error_from_errno("got_object_idset_alloc");
681 05118f5a 2021-06-22 stsp for (i = 0; i < nhead; i++) {
682 05118f5a 2021-06-22 stsp struct got_object_id *id = head[i];
683 05118f5a 2021-06-22 stsp if (id == NULL)
685 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
687 05118f5a 2021-06-22 stsp return err;
688 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
690 05118f5a 2021-06-22 stsp err = queue_commit_id(&ids, id, COLOR_KEEP, repo);
694 05118f5a 2021-06-22 stsp for (i = 0; i < ntail; i++) {
695 05118f5a 2021-06-22 stsp struct got_object_id *id = tail[i];
696 05118f5a 2021-06-22 stsp if (id == NULL)
698 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
700 05118f5a 2021-06-22 stsp return err;
701 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
703 05118f5a 2021-06-22 stsp err = queue_commit_id(&ids, id, COLOR_DROP, repo);
708 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&ids)) {
709 e6bcace5 2021-06-22 stsp int qcolor;
710 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(&ids);
711 e6bcace5 2021-06-22 stsp qcolor = *((int *)qid->data);
713 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(drop, qid->id))
714 e6bcace5 2021-06-22 stsp ncolor = COLOR_DROP;
715 e6bcace5 2021-06-22 stsp else if (got_object_idset_contains(keep, qid->id))
716 e6bcace5 2021-06-22 stsp ncolor = COLOR_KEEP;
718 e6bcace5 2021-06-22 stsp ncolor = COLOR_BLANK;
720 e6bcace5 2021-06-22 stsp if (ncolor == COLOR_DROP || (ncolor == COLOR_KEEP &&
721 e6bcace5 2021-06-22 stsp qcolor == COLOR_KEEP)) {
722 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&ids, entry);
723 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
727 e6bcace5 2021-06-22 stsp if (ncolor == COLOR_KEEP && qcolor == COLOR_DROP) {
728 e6bcace5 2021-06-22 stsp err = drop_commit(keep, drop, qid->id, repo,
729 e6bcace5 2021-06-22 stsp cancel_cb, cancel_arg);
732 e6bcace5 2021-06-22 stsp } else if (ncolor == COLOR_BLANK) {
733 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
734 e6bcace5 2021-06-22 stsp struct got_object_id *id;
735 e6bcace5 2021-06-22 stsp const struct got_object_id_queue *parents;
736 e6bcace5 2021-06-22 stsp struct got_object_qid *pid;
738 e6bcace5 2021-06-22 stsp id = got_object_id_dup(qid->id);
739 e6bcace5 2021-06-22 stsp if (id == NULL) {
740 e6bcace5 2021-06-22 stsp err = got_error_from_errno("got_object_id_dup");
743 e6bcace5 2021-06-22 stsp if (qcolor == COLOR_KEEP)
744 07165b17 2021-07-01 stsp err = got_object_idset_add(keep, id,
745 07165b17 2021-07-01 stsp (void *)&obj_types[GOT_OBJ_TYPE_COMMIT]);
747 07165b17 2021-07-01 stsp err = got_object_idset_add(drop, id,
748 07165b17 2021-07-01 stsp (void *)&obj_types[GOT_OBJ_TYPE_COMMIT]);
754 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, id);
759 e6bcace5 2021-06-22 stsp parents = got_object_commit_get_parent_ids(commit);
760 e6bcace5 2021-06-22 stsp if (parents) {
761 dbdddfee 2021-06-23 naddy STAILQ_FOREACH(pid, parents, entry) {
762 e6bcace5 2021-06-22 stsp err = queue_commit_id(&ids, pid->id,
763 e6bcace5 2021-06-22 stsp qcolor, repo);
770 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
771 e6bcace5 2021-06-22 stsp commit = NULL;
773 e6bcace5 2021-06-22 stsp /* should not happen */
774 e6bcace5 2021-06-22 stsp err = got_error_fmt(GOT_ERR_NOT_IMPL,
775 e6bcace5 2021-06-22 stsp "%s ncolor=%d qcolor=%d", __func__, ncolor, qcolor);
779 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&ids, entry);
780 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
783 e6bcace5 2021-06-22 stsp nkeep = got_object_idset_num_elements(keep);
784 e6bcace5 2021-06-22 stsp if (nkeep > 0) {
785 e6bcace5 2021-06-22 stsp struct append_id_arg arg;
786 e6bcace5 2021-06-22 stsp arg.array = calloc(nkeep, sizeof(struct got_object_id *));
787 e6bcace5 2021-06-22 stsp if (arg.array == NULL) {
788 e6bcace5 2021-06-22 stsp err = got_error_from_errno("calloc");
791 e6bcace5 2021-06-22 stsp arg.idx = 0;
792 e6bcace5 2021-06-22 stsp err = got_object_idset_for_each(keep, append_id, &arg);
794 e6bcace5 2021-06-22 stsp free(arg.array);
797 e6bcace5 2021-06-22 stsp *res = arg.array;
798 e6bcace5 2021-06-22 stsp *nres = nkeep;
801 e6bcace5 2021-06-22 stsp got_object_idset_free(keep);
802 e6bcace5 2021-06-22 stsp got_object_idset_free(drop);
803 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&ids);
804 e6bcace5 2021-06-22 stsp return err;
807 e6bcace5 2021-06-22 stsp static const struct got_error *
808 e6bcace5 2021-06-22 stsp read_meta(struct got_pack_meta ***meta, int *nmeta,
809 e6bcace5 2021-06-22 stsp struct got_object_id **theirs, int ntheirs,
810 e6bcace5 2021-06-22 stsp struct got_object_id **ours, int nours, struct got_repository *repo,
811 05118f5a 2021-06-22 stsp int loose_obj_only, got_pack_progress_cb progress_cb, void *progress_arg,
812 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
814 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
815 e6bcace5 2021-06-22 stsp struct got_object_id **ids = NULL;
816 e6bcace5 2021-06-22 stsp struct got_object_idset *idset;
817 05118f5a 2021-06-22 stsp int i, nobj = 0, obj_type;
818 e6bcace5 2021-06-22 stsp struct got_pack_metavec v;
820 e6bcace5 2021-06-22 stsp *meta = NULL;
821 e6bcace5 2021-06-22 stsp *nmeta = 0;
823 e6bcace5 2021-06-22 stsp idset = got_object_idset_alloc();
824 e6bcace5 2021-06-22 stsp if (idset == NULL)
825 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_idset_alloc");
827 e6bcace5 2021-06-22 stsp v.nmeta = 0;
828 e6bcace5 2021-06-22 stsp v.metasz = 64;
829 e6bcace5 2021-06-22 stsp v.meta = calloc(v.metasz, sizeof(struct got_pack_meta *));
830 e6bcace5 2021-06-22 stsp if (v.meta == NULL) {
831 e6bcace5 2021-06-22 stsp err = got_error_from_errno("reallocarray");
835 e6bcace5 2021-06-22 stsp err = findtwixt(&ids, &nobj, ours, nours, theirs, ntheirs, repo,
836 e6bcace5 2021-06-22 stsp cancel_cb, cancel_arg);
837 e6bcace5 2021-06-22 stsp if (err || nobj == 0)
840 e6bcace5 2021-06-22 stsp for (i = 0; i < ntheirs; i++) {
841 05118f5a 2021-06-22 stsp struct got_object_id *id = theirs[i];
842 05118f5a 2021-06-22 stsp if (id == NULL)
844 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
846 05118f5a 2021-06-22 stsp return err;
847 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
849 05118f5a 2021-06-22 stsp err = load_commit(NULL, idset, id, repo,
850 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
853 05118f5a 2021-06-22 stsp if (progress_cb) {
854 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
855 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
861 05118f5a 2021-06-22 stsp for (i = 0; i < ntheirs; i++) {
862 f4a2ff2d 2021-07-01 stsp struct got_object_id *id = theirs[i];
863 07165b17 2021-07-01 stsp int *cached_type;
864 05118f5a 2021-06-22 stsp if (id == NULL)
866 07165b17 2021-07-01 stsp cached_type = got_object_idset_get(idset, id);
867 07165b17 2021-07-01 stsp if (cached_type == NULL) {
868 07165b17 2021-07-01 stsp err = got_object_get_type(&obj_type, repo, id);
872 07165b17 2021-07-01 stsp obj_type = *cached_type;
873 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_TAG)
875 05118f5a 2021-06-22 stsp err = load_tag(NULL, idset, id, repo,
876 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
879 05118f5a 2021-06-22 stsp if (progress_cb) {
880 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
881 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
887 eca70f98 2021-09-03 stsp for (i = 0; i < nobj; i++) {
888 eca70f98 2021-09-03 stsp err = load_commit(&v, idset, ids[i], repo,
889 eca70f98 2021-09-03 stsp loose_obj_only, cancel_cb, cancel_arg);
892 eca70f98 2021-09-03 stsp if (progress_cb) {
893 eca70f98 2021-09-03 stsp err = progress_cb(progress_arg, 0L, nours,
894 eca70f98 2021-09-03 stsp v.nmeta, 0, 0);
900 05118f5a 2021-06-22 stsp for (i = 0; i < nours; i++) {
901 05118f5a 2021-06-22 stsp struct got_object_id *id = ours[i];
902 07165b17 2021-07-01 stsp int *cached_type;
903 05118f5a 2021-06-22 stsp if (id == NULL)
905 07165b17 2021-07-01 stsp cached_type = got_object_idset_get(idset, id);
906 07165b17 2021-07-01 stsp if (cached_type == NULL) {
907 07165b17 2021-07-01 stsp err = got_object_get_type(&obj_type, repo, id);
911 07165b17 2021-07-01 stsp obj_type = *cached_type;
912 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_TAG)
914 05118f5a 2021-06-22 stsp err = load_tag(&v, idset, id, repo,
915 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
918 05118f5a 2021-06-22 stsp if (progress_cb) {
919 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
920 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
927 e6bcace5 2021-06-22 stsp for (i = 0; i < nobj; i++) {
928 e6bcace5 2021-06-22 stsp free(ids[i]);
931 e6bcace5 2021-06-22 stsp got_object_idset_free(idset);
932 e6bcace5 2021-06-22 stsp if (err == NULL) {
933 e6bcace5 2021-06-22 stsp *meta = v.meta;
934 e6bcace5 2021-06-22 stsp *nmeta = v.nmeta;
936 e6bcace5 2021-06-22 stsp free(v.meta);
938 e6bcace5 2021-06-22 stsp return err;
941 e6bcace5 2021-06-22 stsp const struct got_error *
942 e6bcace5 2021-06-22 stsp hwrite(FILE *f, void *buf, int len, SHA1_CTX *ctx)
946 e6bcace5 2021-06-22 stsp SHA1Update(ctx, buf, len);
947 e6bcace5 2021-06-22 stsp n = fwrite(buf, 1, len, f);
948 e6bcace5 2021-06-22 stsp if (n != len)
949 e6bcace5 2021-06-22 stsp return got_ferror(f, GOT_ERR_IO);
950 e6bcace5 2021-06-22 stsp return NULL;
953 e6bcace5 2021-06-22 stsp static void
954 e6bcace5 2021-06-22 stsp putbe32(char *b, uint32_t n)
956 e6bcace5 2021-06-22 stsp b[0] = n >> 24;
957 e6bcace5 2021-06-22 stsp b[1] = n >> 16;
958 e6bcace5 2021-06-22 stsp b[2] = n >> 8;
959 e6bcace5 2021-06-22 stsp b[3] = n >> 0;
963 e6bcace5 2021-06-22 stsp write_order_cmp(const void *pa, const void *pb)
965 e6bcace5 2021-06-22 stsp struct got_pack_meta *a, *b, *ahd, *bhd;
967 e6bcace5 2021-06-22 stsp a = *(struct got_pack_meta **)pa;
968 e6bcace5 2021-06-22 stsp b = *(struct got_pack_meta **)pb;
969 e6bcace5 2021-06-22 stsp ahd = (a->head == NULL) ? a : a->head;
970 e6bcace5 2021-06-22 stsp bhd = (b->head == NULL) ? b : b->head;
971 e6bcace5 2021-06-22 stsp if (ahd->mtime != bhd->mtime)
972 e6bcace5 2021-06-22 stsp return bhd->mtime - ahd->mtime;
973 e6bcace5 2021-06-22 stsp if (ahd != bhd)
974 e6bcace5 2021-06-22 stsp return (uintptr_t)bhd - (uintptr_t)ahd;
975 e6bcace5 2021-06-22 stsp if (a->nchain != b->nchain)
976 e6bcace5 2021-06-22 stsp return a->nchain - b->nchain;
977 e6bcace5 2021-06-22 stsp return a->mtime - b->mtime;
980 e6bcace5 2021-06-22 stsp static const struct got_error *
981 e6bcace5 2021-06-22 stsp packhdr(int *hdrlen, char *hdr, size_t bufsize, int obj_type, size_t len)
985 e6bcace5 2021-06-22 stsp *hdrlen = 0;
987 e6bcace5 2021-06-22 stsp hdr[0] = obj_type << 4;
988 e6bcace5 2021-06-22 stsp hdr[0] |= len & 0xf;
990 e6bcace5 2021-06-22 stsp for (i = 1; len != 0; i++){
991 e6bcace5 2021-06-22 stsp if (i >= bufsize)
992 e6bcace5 2021-06-22 stsp return got_error(GOT_ERR_NO_SPACE);
993 e6bcace5 2021-06-22 stsp hdr[i - 1] |= GOT_DELTA_SIZE_MORE;
994 e6bcace5 2021-06-22 stsp hdr[i] = len & GOT_DELTA_SIZE_VAL_MASK;
995 e6bcace5 2021-06-22 stsp len >>= GOT_DELTA_SIZE_SHIFT;
998 e6bcace5 2021-06-22 stsp *hdrlen = i;
999 e6bcace5 2021-06-22 stsp return NULL;
1002 e6bcace5 2021-06-22 stsp static const struct got_error *
1003 e6bcace5 2021-06-22 stsp append(char **p, int *len, int *sz, void *seg, int nseg)
1007 e6bcace5 2021-06-22 stsp if (*len + nseg >= *sz) {
1008 e6bcace5 2021-06-22 stsp while (*len + nseg >= *sz)
1009 e6bcace5 2021-06-22 stsp *sz += *sz / 2;
1010 e6bcace5 2021-06-22 stsp n = realloc(*p, *sz);
1011 e6bcace5 2021-06-22 stsp if (n == NULL)
1012 e6bcace5 2021-06-22 stsp return got_error_from_errno("realloc");
1015 e6bcace5 2021-06-22 stsp memcpy(*p + *len, seg, nseg);
1016 e6bcace5 2021-06-22 stsp *len += nseg;
1017 e6bcace5 2021-06-22 stsp return NULL;
1021 e6bcace5 2021-06-22 stsp static const struct got_error *
1022 e6bcace5 2021-06-22 stsp encodedelta(int *nd, struct got_pack_meta *m, struct got_raw_object *o,
1023 e6bcace5 2021-06-22 stsp off_t base_size, char **pp)
1025 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
1027 e6bcace5 2021-06-22 stsp unsigned char buf[16], *bp;
1028 e6bcace5 2021-06-22 stsp int len, sz, i, j;
1030 e6bcace5 2021-06-22 stsp struct got_delta_instruction *d;
1032 e6bcace5 2021-06-22 stsp *pp = NULL;
1037 e6bcace5 2021-06-22 stsp p = malloc(sz);
1038 e6bcace5 2021-06-22 stsp if (p == NULL)
1039 e6bcace5 2021-06-22 stsp return got_error_from_errno("malloc");
1041 e6bcace5 2021-06-22 stsp /* base object size */
1042 e6bcace5 2021-06-22 stsp buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
1043 e6bcace5 2021-06-22 stsp n = base_size >> GOT_DELTA_SIZE_SHIFT;
1044 e6bcace5 2021-06-22 stsp for (i = 1; n > 0; i++) {
1045 e6bcace5 2021-06-22 stsp buf[i - 1] |= GOT_DELTA_SIZE_MORE;
1046 e6bcace5 2021-06-22 stsp buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
1047 e6bcace5 2021-06-22 stsp n >>= GOT_DELTA_SIZE_SHIFT;
1049 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, i);
1051 e6bcace5 2021-06-22 stsp return err;
1053 e6bcace5 2021-06-22 stsp /* target object size */
1054 e6bcace5 2021-06-22 stsp buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
1055 e6bcace5 2021-06-22 stsp n = o->size >> GOT_DELTA_SIZE_SHIFT;
1056 e6bcace5 2021-06-22 stsp for (i = 1; n > 0; i++) {
1057 e6bcace5 2021-06-22 stsp buf[i - 1] |= GOT_DELTA_SIZE_MORE;
1058 e6bcace5 2021-06-22 stsp buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
1059 e6bcace5 2021-06-22 stsp n >>= GOT_DELTA_SIZE_SHIFT;
1061 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, i);
1063 e6bcace5 2021-06-22 stsp return err;
1064 e6bcace5 2021-06-22 stsp for (j = 0; j < m->ndeltas; j++) {
1065 e6bcace5 2021-06-22 stsp d = &m->deltas[j];
1066 e6bcace5 2021-06-22 stsp if (d->copy) {
1067 e6bcace5 2021-06-22 stsp n = d->offset;
1068 e6bcace5 2021-06-22 stsp bp = &buf[1];
1069 e6bcace5 2021-06-22 stsp buf[0] = GOT_DELTA_BASE_COPY;
1070 e6bcace5 2021-06-22 stsp for (i = 0; i < 4; i++) {
1071 e6bcace5 2021-06-22 stsp /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
1072 e6bcace5 2021-06-22 stsp buf[0] |= 1 << i;
1073 e6bcace5 2021-06-22 stsp *bp++ = n & 0xff;
1075 e6bcace5 2021-06-22 stsp if (n == 0)
1079 e6bcace5 2021-06-22 stsp n = d->len;
1080 e6bcace5 2021-06-22 stsp if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
1081 e6bcace5 2021-06-22 stsp /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
1082 e6bcace5 2021-06-22 stsp for (i = 0; i < 3 && n > 0; i++) {
1083 e6bcace5 2021-06-22 stsp buf[0] |= 1 << (i + 4);
1084 e6bcace5 2021-06-22 stsp *bp++ = n & 0xff;
1088 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, bp - buf);
1090 e6bcace5 2021-06-22 stsp return err;
1092 e6bcace5 2021-06-22 stsp char content[128];
1094 e6bcace5 2021-06-22 stsp if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1)
1095 e6bcace5 2021-06-22 stsp return got_error_from_errno("fseeko");
1097 e6bcace5 2021-06-22 stsp while (n != d->len) {
1098 e6bcace5 2021-06-22 stsp buf[0] = (d->len - n < 127) ? d->len - n : 127;
1099 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, 1);
1101 e6bcace5 2021-06-22 stsp return err;
1102 e6bcace5 2021-06-22 stsp r = fread(content, 1, buf[0], o->f);
1103 e6bcace5 2021-06-22 stsp if (r != buf[0])
1104 e6bcace5 2021-06-22 stsp return got_ferror(o->f, GOT_ERR_IO);
1105 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, content, buf[0]);
1107 e6bcace5 2021-06-22 stsp return err;
1108 e6bcace5 2021-06-22 stsp n += buf[0];
1113 e6bcace5 2021-06-22 stsp *nd = len;
1114 e6bcace5 2021-06-22 stsp return NULL;
1117 e6bcace5 2021-06-22 stsp static int
1118 e6bcace5 2021-06-22 stsp packoff(char *hdr, off_t off)
1121 e6bcace5 2021-06-22 stsp char rbuf[8];
1123 e6bcace5 2021-06-22 stsp rbuf[0] = off & GOT_DELTA_SIZE_VAL_MASK;
1124 e6bcace5 2021-06-22 stsp for (i = 1; (off >>= GOT_DELTA_SIZE_SHIFT) != 0; i++) {
1125 e6bcace5 2021-06-22 stsp rbuf[i] = (--off & GOT_DELTA_SIZE_VAL_MASK) |
1126 e6bcace5 2021-06-22 stsp GOT_DELTA_SIZE_MORE;
1130 e6bcace5 2021-06-22 stsp while (i > 0)
1131 e6bcace5 2021-06-22 stsp hdr[j++] = rbuf[--i];
1135 e6bcace5 2021-06-22 stsp static const struct got_error *
1136 e6bcace5 2021-06-22 stsp genpack(uint8_t *pack_sha1, FILE *packfile,
1137 05118f5a 2021-06-22 stsp struct got_pack_meta **meta, int nmeta, int nours,
1138 05118f5a 2021-06-22 stsp int use_offset_deltas, struct got_repository *repo,
1139 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
1140 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
1142 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
1143 05118f5a 2021-06-22 stsp int i, nh, nd;
1144 e6bcace5 2021-06-22 stsp SHA1_CTX ctx;
1145 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
1146 e6bcace5 2021-06-22 stsp struct got_raw_object *raw;
1147 e6bcace5 2021-06-22 stsp char *p = NULL, buf[32];
1148 e6bcace5 2021-06-22 stsp size_t outlen, n;
1149 e6bcace5 2021-06-22 stsp struct got_deflate_checksum csum;
1150 05118f5a 2021-06-22 stsp off_t packfile_size = 0;
1152 e6bcace5 2021-06-22 stsp SHA1Init(&ctx);
1153 e6bcace5 2021-06-22 stsp csum.output_sha1 = &ctx;
1154 e6bcace5 2021-06-22 stsp csum.output_crc = NULL;
1156 e6bcace5 2021-06-22 stsp err = hwrite(packfile, "PACK", 4, &ctx);
1158 e6bcace5 2021-06-22 stsp return err;
1159 e6bcace5 2021-06-22 stsp putbe32(buf, GOT_PACKFILE_VERSION);
1160 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, 4, &ctx);
1162 e6bcace5 2021-06-22 stsp goto done;
1163 e6bcace5 2021-06-22 stsp putbe32(buf, nmeta);
1164 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, 4, &ctx);
1166 e6bcace5 2021-06-22 stsp goto done;
1167 e6bcace5 2021-06-22 stsp qsort(meta, nmeta, sizeof(struct got_pack_meta *), write_order_cmp);
1168 05118f5a 2021-06-22 stsp for (i = 0; i < nmeta; i++) {
1169 05118f5a 2021-06-22 stsp if (progress_cb) {
1170 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, packfile_size, nours,
1171 05118f5a 2021-06-22 stsp nmeta, nmeta, i);
1173 05118f5a 2021-06-22 stsp goto done;
1175 e6bcace5 2021-06-22 stsp m = meta[i];
1176 e6bcace5 2021-06-22 stsp m->off = ftello(packfile);
1177 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&raw, repo, &m->id, 8192);
1179 e6bcace5 2021-06-22 stsp goto done;
1180 e6bcace5 2021-06-22 stsp if (m->deltas == NULL) {
1181 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1182 e6bcace5 2021-06-22 stsp m->obj_type, raw->size);
1184 e6bcace5 2021-06-22 stsp goto done;
1185 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1187 e6bcace5 2021-06-22 stsp goto done;
1188 05118f5a 2021-06-22 stsp packfile_size += nh;
1189 e6bcace5 2021-06-22 stsp if (fseeko(raw->f, raw->hdrlen, SEEK_SET) == -1) {
1190 e6bcace5 2021-06-22 stsp err = got_error_from_errno("fseeko");
1191 e6bcace5 2021-06-22 stsp goto done;
1193 e6bcace5 2021-06-22 stsp err = got_deflate_to_file(&outlen, raw->f, packfile,
1196 e6bcace5 2021-06-22 stsp goto done;
1197 05118f5a 2021-06-22 stsp packfile_size += outlen;
1199 e6bcace5 2021-06-22 stsp FILE *delta_file;
1200 e6bcace5 2021-06-22 stsp struct got_raw_object *base_raw;
1201 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&base_raw, repo,
1202 e6bcace5 2021-06-22 stsp &m->prev->id, 8192);
1204 e6bcace5 2021-06-22 stsp goto done;
1205 e6bcace5 2021-06-22 stsp err = encodedelta(&nd, m, raw, base_raw->size, &p);
1207 e6bcace5 2021-06-22 stsp goto done;
1208 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
1209 e6bcace5 2021-06-22 stsp if (use_offset_deltas && m->prev->off != 0) {
1210 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1211 e6bcace5 2021-06-22 stsp GOT_OBJ_TYPE_OFFSET_DELTA, nd);
1213 e6bcace5 2021-06-22 stsp goto done;
1214 e6bcace5 2021-06-22 stsp nh += packoff(buf + nh,
1215 e6bcace5 2021-06-22 stsp m->off - m->prev->off);
1216 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1218 e6bcace5 2021-06-22 stsp goto done;
1219 05118f5a 2021-06-22 stsp packfile_size += nh;
1221 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1222 e6bcace5 2021-06-22 stsp GOT_OBJ_TYPE_REF_DELTA, nd);
1223 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1225 e6bcace5 2021-06-22 stsp goto done;
1226 05118f5a 2021-06-22 stsp packfile_size += nh;
1227 e6bcace5 2021-06-22 stsp err = hwrite(packfile, m->prev->id.sha1,
1228 e6bcace5 2021-06-22 stsp sizeof(m->prev->id.sha1), &ctx);
1229 05118f5a 2021-06-22 stsp packfile_size += sizeof(m->prev->id.sha1);
1231 e6bcace5 2021-06-22 stsp goto done;
1233 e6bcace5 2021-06-22 stsp /* XXX need got_deflate_from_mem() */
1234 e6bcace5 2021-06-22 stsp delta_file = fmemopen(p, nd, "r");
1235 e6bcace5 2021-06-22 stsp if (delta_file == NULL) {
1236 e6bcace5 2021-06-22 stsp err = got_error_from_errno("fmemopen");
1237 e6bcace5 2021-06-22 stsp goto done;
1239 e6bcace5 2021-06-22 stsp err = got_deflate_to_file(&outlen, delta_file,
1240 e6bcace5 2021-06-22 stsp packfile, &csum);
1241 e6bcace5 2021-06-22 stsp fclose(delta_file);
1243 e6bcace5 2021-06-22 stsp goto done;
1244 05118f5a 2021-06-22 stsp packfile_size += outlen;
1248 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
1249 e6bcace5 2021-06-22 stsp raw = NULL;
1251 e6bcace5 2021-06-22 stsp SHA1Final(pack_sha1, &ctx);
1252 e6bcace5 2021-06-22 stsp n = fwrite(pack_sha1, 1, SHA1_DIGEST_LENGTH, packfile);
1253 e6bcace5 2021-06-22 stsp if (n != SHA1_DIGEST_LENGTH)
1254 e6bcace5 2021-06-22 stsp err = got_ferror(packfile, GOT_ERR_IO);
1255 05118f5a 2021-06-22 stsp packfile_size += SHA1_DIGEST_LENGTH;
1256 dc7edd42 2021-08-22 stsp packfile_size += sizeof(struct got_packfile_hdr);
1257 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, packfile_size, nours,
1258 05118f5a 2021-06-22 stsp nmeta, nmeta, nmeta);
1260 05118f5a 2021-06-22 stsp goto done;
1263 e6bcace5 2021-06-22 stsp return err;
1266 e6bcace5 2021-06-22 stsp const struct got_error *
1267 e6bcace5 2021-06-22 stsp got_pack_create(uint8_t *packsha1, FILE *packfile,
1268 e6bcace5 2021-06-22 stsp struct got_object_id **theirs, int ntheirs,
1269 e6bcace5 2021-06-22 stsp struct got_object_id **ours, int nours,
1270 f8a36e22 2021-08-26 stsp struct got_repository *repo, int loose_obj_only, int allow_empty,
1271 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
1272 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
1274 e6bcace5 2021-06-22 stsp const struct got_error *err;
1275 e6bcace5 2021-06-22 stsp struct got_pack_meta **meta;
1276 e6bcace5 2021-06-22 stsp int nmeta;
1278 e6bcace5 2021-06-22 stsp err = read_meta(&meta, &nmeta, theirs, ntheirs, ours, nours, repo,
1279 05118f5a 2021-06-22 stsp loose_obj_only, progress_cb, progress_arg, cancel_cb, cancel_arg);
1281 e6bcace5 2021-06-22 stsp return err;
1283 f8a36e22 2021-08-26 stsp if (nmeta == 0 && !allow_empty) {
1284 05118f5a 2021-06-22 stsp err = got_error(GOT_ERR_CANNOT_PACK);
1285 05118f5a 2021-06-22 stsp goto done;
1287 f8a36e22 2021-08-26 stsp if (nmeta > 0) {
1288 f8a36e22 2021-08-26 stsp err = pick_deltas(meta, nmeta, nours, repo,
1289 f8a36e22 2021-08-26 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
1291 f8a36e22 2021-08-26 stsp goto done;
1294 05118f5a 2021-06-22 stsp err = genpack(packsha1, packfile, meta, nmeta, nours, 1, repo,
1295 05118f5a 2021-06-22 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
1297 e6bcace5 2021-06-22 stsp goto done;
1299 e6bcace5 2021-06-22 stsp free_nmeta(meta, nmeta);
1300 e6bcace5 2021-06-22 stsp return err;
