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 e6bcace5 2021-06-22 stsp #include <sys/queue.h>
20 08736cf9 2021-06-23 stsp #include <sys/uio.h>
21 e6bcace5 2021-06-22 stsp #include <sys/stat.h>
23 08736cf9 2021-06-23 stsp #include <stdint.h>
24 05118f5a 2021-06-22 stsp #include <imsg.h>
25 e6bcace5 2021-06-22 stsp #include <stdio.h>
26 e6bcace5 2021-06-22 stsp #include <stdlib.h>
27 e6bcace5 2021-06-22 stsp #include <string.h>
28 e6bcace5 2021-06-22 stsp #include <sha1.h>
29 e6bcace5 2021-06-22 stsp #include <limits.h>
30 e6bcace5 2021-06-22 stsp #include <zlib.h>
32 e6bcace5 2021-06-22 stsp #include "got_error.h"
33 e6bcace5 2021-06-22 stsp #include "got_cancel.h"
34 e6bcace5 2021-06-22 stsp #include "got_object.h"
35 05118f5a 2021-06-22 stsp #include "got_reference.h"
36 05118f5a 2021-06-22 stsp #include "got_repository_admin.h"
38 e6bcace5 2021-06-22 stsp #include "got_lib_deltify.h"
39 e6bcace5 2021-06-22 stsp #include "got_lib_delta.h"
40 e6bcace5 2021-06-22 stsp #include "got_lib_object.h"
41 e6bcace5 2021-06-22 stsp #include "got_lib_object_idset.h"
42 05118f5a 2021-06-22 stsp #include "got_lib_object_cache.h"
43 e6bcace5 2021-06-22 stsp #include "got_lib_deflate.h"
44 e6bcace5 2021-06-22 stsp #include "got_lib_pack.h"
45 05118f5a 2021-06-22 stsp #include "got_lib_privsep.h"
46 05118f5a 2021-06-22 stsp #include "got_lib_repository.h"
49 e6bcace5 2021-06-22 stsp #define MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
52 e6bcace5 2021-06-22 stsp struct got_pack_meta {
53 e6bcace5 2021-06-22 stsp struct got_object_id id;
55 e6bcace5 2021-06-22 stsp int obj_type;
56 e6bcace5 2021-06-22 stsp time_t mtime;
58 e6bcace5 2021-06-22 stsp /* The best delta we picked */
59 e6bcace5 2021-06-22 stsp struct got_pack_meta *head;
60 e6bcace5 2021-06-22 stsp struct got_pack_meta *prev;
61 e6bcace5 2021-06-22 stsp struct got_delta_instruction *deltas;
62 e6bcace5 2021-06-22 stsp int ndeltas;
65 e6bcace5 2021-06-22 stsp /* Only used for delta window */
66 e6bcace5 2021-06-22 stsp struct got_delta_table *dtab;
68 e6bcace5 2021-06-22 stsp /* Only used for writing offset deltas */
72 e6bcace5 2021-06-22 stsp struct got_pack_metavec {
73 e6bcace5 2021-06-22 stsp struct got_pack_meta **meta;
78 e6bcace5 2021-06-22 stsp static const struct got_error *
79 e6bcace5 2021-06-22 stsp alloc_meta(struct got_pack_meta **new, struct got_object_id *id,
80 e6bcace5 2021-06-22 stsp const char *path, int obj_type, time_t mtime)
82 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
83 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
85 e6bcace5 2021-06-22 stsp *new = NULL;
87 e6bcace5 2021-06-22 stsp m = calloc(1, sizeof(*m));
88 e6bcace5 2021-06-22 stsp if (m == NULL)
89 e6bcace5 2021-06-22 stsp return got_error_from_errno("malloc");
91 e6bcace5 2021-06-22 stsp memcpy(&m->id, id, sizeof(m->id));
93 e6bcace5 2021-06-22 stsp m->path = strdup(path);
94 e6bcace5 2021-06-22 stsp if (m->path == NULL) {
95 e6bcace5 2021-06-22 stsp err = got_error_from_errno("strdup");
100 e6bcace5 2021-06-22 stsp m->obj_type = obj_type;
101 e6bcace5 2021-06-22 stsp m->mtime = mtime;
103 e6bcace5 2021-06-22 stsp return NULL;
106 e6bcace5 2021-06-22 stsp static void
107 e6bcace5 2021-06-22 stsp clear_meta(struct got_pack_meta *meta)
109 e6bcace5 2021-06-22 stsp if (meta == NULL)
111 e6bcace5 2021-06-22 stsp free(meta->deltas);
112 e6bcace5 2021-06-22 stsp meta->deltas = NULL;
113 e6bcace5 2021-06-22 stsp free(meta->path);
114 e6bcace5 2021-06-22 stsp meta->path = NULL;
117 e6bcace5 2021-06-22 stsp static void
118 e6bcace5 2021-06-22 stsp free_nmeta(struct got_pack_meta **meta, int nmeta)
122 e6bcace5 2021-06-22 stsp for (i = 0; i < nmeta; i++)
123 e6bcace5 2021-06-22 stsp clear_meta(meta[i]);
124 e6bcace5 2021-06-22 stsp free(meta);
128 e6bcace5 2021-06-22 stsp delta_order_cmp(const void *pa, const void *pb)
130 e6bcace5 2021-06-22 stsp struct got_pack_meta *a, *b;
133 e6bcace5 2021-06-22 stsp a = *(struct got_pack_meta **)pa;
134 e6bcace5 2021-06-22 stsp b = *(struct got_pack_meta **)pb;
136 e6bcace5 2021-06-22 stsp if (a->obj_type != b->obj_type)
137 e6bcace5 2021-06-22 stsp return a->obj_type - b->obj_type;
138 e6bcace5 2021-06-22 stsp cmp = strcmp(a->path, b->path);
139 e6bcace5 2021-06-22 stsp if (cmp != 0)
140 e6bcace5 2021-06-22 stsp return cmp;
141 e6bcace5 2021-06-22 stsp if (a->mtime != b->mtime)
142 e6bcace5 2021-06-22 stsp return a->mtime - b->mtime;
143 e6bcace5 2021-06-22 stsp return got_object_id_cmp(&a->id, &b->id);
147 e6bcace5 2021-06-22 stsp delta_size(struct got_delta_instruction *deltas, int ndeltas)
149 e6bcace5 2021-06-22 stsp int i, size = 32;
150 e6bcace5 2021-06-22 stsp for (i = 0; i < ndeltas; i++) {
151 e6bcace5 2021-06-22 stsp if (deltas[i].copy)
152 e6bcace5 2021-06-22 stsp size += GOT_DELTA_SIZE_SHIFT;
154 e6bcace5 2021-06-22 stsp size += deltas[i].len + 1;
156 e6bcace5 2021-06-22 stsp return size;
160 e6bcace5 2021-06-22 stsp static const struct got_error *
161 05118f5a 2021-06-22 stsp pick_deltas(struct got_pack_meta **meta, int nmeta, int nours,
162 05118f5a 2021-06-22 stsp struct got_repository *repo,
163 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
164 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
166 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
167 e6bcace5 2021-06-22 stsp struct got_pack_meta *m = NULL, *base = NULL;
168 e6bcace5 2021-06-22 stsp struct got_raw_object *raw = NULL, *base_raw = NULL;
169 e6bcace5 2021-06-22 stsp struct got_delta_instruction *deltas;
170 05118f5a 2021-06-22 stsp int i, j, size, ndeltas, best;
171 e6bcace5 2021-06-22 stsp const int max_base_candidates = 10;
173 e6bcace5 2021-06-22 stsp qsort(meta, nmeta, sizeof(struct got_pack_meta *), delta_order_cmp);
174 e6bcace5 2021-06-22 stsp for (i = 0; i < nmeta; i++) {
175 e6bcace5 2021-06-22 stsp if (cancel_cb) {
176 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
180 05118f5a 2021-06-22 stsp if (progress_cb) {
181 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours, nmeta, i, 0);
185 e6bcace5 2021-06-22 stsp m = meta[i];
186 e6bcace5 2021-06-22 stsp m->deltas = NULL;
187 e6bcace5 2021-06-22 stsp m->ndeltas = 0;
189 e6bcace5 2021-06-22 stsp if (m->obj_type == GOT_OBJ_TYPE_COMMIT ||
190 e6bcace5 2021-06-22 stsp m->obj_type == GOT_OBJ_TYPE_TAG)
193 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&raw, repo, &m->id, 8192);
197 e6bcace5 2021-06-22 stsp err = got_deltify_init(&m->dtab, raw->f, raw->hdrlen,
198 e6bcace5 2021-06-22 stsp raw->size + raw->hdrlen);
202 e6bcace5 2021-06-22 stsp if (i > max_base_candidates) {
203 e6bcace5 2021-06-22 stsp struct got_pack_meta *n = NULL;
204 e6bcace5 2021-06-22 stsp n = meta[i - (max_base_candidates + 1)];
205 e6bcace5 2021-06-22 stsp got_deltify_free(n->dtab);
206 e6bcace5 2021-06-22 stsp n->dtab = NULL;
209 e6bcace5 2021-06-22 stsp best = raw->size;
210 e6bcace5 2021-06-22 stsp for (j = MAX(0, i - max_base_candidates); j < i; j++) {
211 e6bcace5 2021-06-22 stsp if (cancel_cb) {
212 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
216 e6bcace5 2021-06-22 stsp base = meta[j];
217 e6bcace5 2021-06-22 stsp /* long chains make unpacking slow, avoid such bases */
218 e6bcace5 2021-06-22 stsp if (base->nchain >= 128 ||
219 e6bcace5 2021-06-22 stsp base->obj_type != m->obj_type)
222 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&base_raw, repo, &base->id,
226 e6bcace5 2021-06-22 stsp err = got_deltify(&deltas, &ndeltas,
227 e6bcace5 2021-06-22 stsp raw->f, raw->hdrlen, raw->size + raw->hdrlen,
228 e6bcace5 2021-06-22 stsp base->dtab, base_raw->f, base_raw->hdrlen,
229 e6bcace5 2021-06-22 stsp base_raw->size + base_raw->hdrlen);
230 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
231 e6bcace5 2021-06-22 stsp base_raw = NULL;
235 e6bcace5 2021-06-22 stsp size = delta_size(deltas, ndeltas);
236 e6bcace5 2021-06-22 stsp if (size + 32 < best){
238 e6bcace5 2021-06-22 stsp * if we already picked a best delta,
239 e6bcace5 2021-06-22 stsp * replace it.
241 e6bcace5 2021-06-22 stsp free(m->deltas);
242 e6bcace5 2021-06-22 stsp best = size;
243 e6bcace5 2021-06-22 stsp m->deltas = deltas;
244 e6bcace5 2021-06-22 stsp m->ndeltas = ndeltas;
245 e6bcace5 2021-06-22 stsp m->nchain = base->nchain + 1;
246 e6bcace5 2021-06-22 stsp m->prev = base;
247 e6bcace5 2021-06-22 stsp m->head = base->head;
248 e6bcace5 2021-06-22 stsp if (m->head == NULL)
249 e6bcace5 2021-06-22 stsp m->head = base;
251 e6bcace5 2021-06-22 stsp free(deltas);
252 e6bcace5 2021-06-22 stsp deltas = NULL;
253 e6bcace5 2021-06-22 stsp ndeltas = 0;
257 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
258 e6bcace5 2021-06-22 stsp raw = NULL;
261 e6bcace5 2021-06-22 stsp for (i = MAX(0, nmeta - max_base_candidates); i < nmeta; i++) {
262 e6bcace5 2021-06-22 stsp got_deltify_free(meta[i]->dtab);
263 e6bcace5 2021-06-22 stsp meta[i]->dtab = NULL;
266 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
267 e6bcace5 2021-06-22 stsp if (base_raw)
268 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
269 e6bcace5 2021-06-22 stsp return err;
272 e6bcace5 2021-06-22 stsp static const struct got_error *
273 05118f5a 2021-06-22 stsp search_packidx(int *found, struct got_object_id *id,
274 05118f5a 2021-06-22 stsp struct got_repository *repo)
276 05118f5a 2021-06-22 stsp const struct got_error *err = NULL;
277 05118f5a 2021-06-22 stsp struct got_packidx *packidx = NULL;
280 05118f5a 2021-06-22 stsp *found = 0;
282 05118f5a 2021-06-22 stsp err = got_repo_search_packidx(&packidx, &idx, repo, id);
283 05118f5a 2021-06-22 stsp if (err == NULL)
284 05118f5a 2021-06-22 stsp *found = 1; /* object is already packed */
285 05118f5a 2021-06-22 stsp else if (err->code == GOT_ERR_NO_OBJ)
286 05118f5a 2021-06-22 stsp err = NULL;
287 05118f5a 2021-06-22 stsp return err;
290 07165b17 2021-07-01 stsp static const int obj_types[] = {
291 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_ANY,
292 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_COMMIT,
293 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_TREE,
294 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_BLOB,
295 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_TAG,
296 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_OFFSET_DELTA,
297 07165b17 2021-07-01 stsp GOT_OBJ_TYPE_REF_DELTA
300 05118f5a 2021-06-22 stsp static const struct got_error *
301 e6bcace5 2021-06-22 stsp add_meta(struct got_pack_metavec *v, struct got_object_idset *idset,
302 e6bcace5 2021-06-22 stsp struct got_object_id *id, const char *path, int obj_type,
303 05118f5a 2021-06-22 stsp time_t mtime, int loose_obj_only, struct got_repository *repo)
305 e6bcace5 2021-06-22 stsp const struct got_error *err;
306 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
308 05118f5a 2021-06-22 stsp if (loose_obj_only) {
309 05118f5a 2021-06-22 stsp int is_packed;
310 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
312 05118f5a 2021-06-22 stsp return err;
313 05118f5a 2021-06-22 stsp if (is_packed)
314 05118f5a 2021-06-22 stsp return NULL;
317 07165b17 2021-07-01 stsp err = got_object_idset_add(idset, id, (void *)&obj_types[obj_type]);
319 e6bcace5 2021-06-22 stsp return err;
321 e6bcace5 2021-06-22 stsp if (v == NULL)
322 e6bcace5 2021-06-22 stsp return NULL;
324 e6bcace5 2021-06-22 stsp err = alloc_meta(&m, id, path, obj_type, mtime);
328 e6bcace5 2021-06-22 stsp if (v->nmeta == v->metasz){
329 e6bcace5 2021-06-22 stsp size_t newsize = 2 * v->metasz;
330 e6bcace5 2021-06-22 stsp struct got_pack_meta **new;
331 e6bcace5 2021-06-22 stsp new = reallocarray(v->meta, newsize, sizeof(*new));
332 e6bcace5 2021-06-22 stsp if (new == NULL) {
333 e6bcace5 2021-06-22 stsp err = got_error_from_errno("reallocarray");
336 e6bcace5 2021-06-22 stsp v->meta = new;
337 e6bcace5 2021-06-22 stsp v->metasz = newsize;
341 e6bcace5 2021-06-22 stsp clear_meta(m);
344 e6bcace5 2021-06-22 stsp v->meta[v->nmeta++] = m;
346 e6bcace5 2021-06-22 stsp return err;
349 e6bcace5 2021-06-22 stsp static const struct got_error *
350 e6bcace5 2021-06-22 stsp load_tree_entries(struct got_object_id_queue *ids, struct got_pack_metavec *v,
351 e6bcace5 2021-06-22 stsp struct got_object_idset *idset, struct got_object_id *tree_id,
352 e6bcace5 2021-06-22 stsp const char *dpath, time_t mtime, struct got_repository *repo,
353 05118f5a 2021-06-22 stsp int loose_obj_only, got_cancel_cb cancel_cb, void *cancel_arg)
355 e6bcace5 2021-06-22 stsp const struct got_error *err;
356 e6bcace5 2021-06-22 stsp struct got_tree_object *tree;
357 e6bcace5 2021-06-22 stsp char *p = NULL;
360 e6bcace5 2021-06-22 stsp err = got_object_open_as_tree(&tree, repo, tree_id);
362 e6bcace5 2021-06-22 stsp return err;
364 e6bcace5 2021-06-22 stsp for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
365 e6bcace5 2021-06-22 stsp struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
366 e6bcace5 2021-06-22 stsp struct got_object_id *id = got_tree_entry_get_id(e);
367 e6bcace5 2021-06-22 stsp mode_t mode = got_tree_entry_get_mode(e);
369 e6bcace5 2021-06-22 stsp if (cancel_cb) {
370 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
375 e6bcace5 2021-06-22 stsp if (got_object_tree_entry_is_symlink(e) ||
376 e6bcace5 2021-06-22 stsp got_object_tree_entry_is_submodule(e) ||
377 e6bcace5 2021-06-22 stsp got_object_idset_contains(idset, id))
380 e6bcace5 2021-06-22 stsp if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
381 e6bcace5 2021-06-22 stsp got_tree_entry_get_name(e)) == -1) {
382 e6bcace5 2021-06-22 stsp err = got_error_from_errno("asprintf");
386 e6bcace5 2021-06-22 stsp if (S_ISDIR(mode)) {
387 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
388 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
391 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(ids, qid, entry);
392 e6bcace5 2021-06-22 stsp } else if (S_ISREG(mode)) {
393 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, id, p, GOT_OBJ_TYPE_BLOB,
394 05118f5a 2021-06-22 stsp mtime, loose_obj_only, repo);
402 e6bcace5 2021-06-22 stsp got_object_tree_close(tree);
404 e6bcace5 2021-06-22 stsp return err;
407 e6bcace5 2021-06-22 stsp static const struct got_error *
408 e6bcace5 2021-06-22 stsp load_tree(struct got_pack_metavec *v, struct got_object_idset *idset,
409 e6bcace5 2021-06-22 stsp struct got_object_id *tree_id, const char *dpath, time_t mtime,
410 05118f5a 2021-06-22 stsp int loose_obj_only, struct got_repository *repo,
411 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
413 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
414 e6bcace5 2021-06-22 stsp struct got_object_id_queue tree_ids;
415 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
417 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, tree_id))
418 e6bcace5 2021-06-22 stsp return NULL;
420 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, tree_id);
422 e6bcace5 2021-06-22 stsp return err;
424 dbdddfee 2021-06-23 naddy STAILQ_INIT(&tree_ids);
425 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(&tree_ids, qid, entry);
427 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&tree_ids)) {
428 e6bcace5 2021-06-22 stsp if (cancel_cb) {
429 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
434 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(&tree_ids);
435 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&tree_ids, entry);
437 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, qid->id)) {
438 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
442 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, qid->id, dpath, GOT_OBJ_TYPE_TREE,
443 05118f5a 2021-06-22 stsp mtime, loose_obj_only, repo);
445 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
449 e6bcace5 2021-06-22 stsp err = load_tree_entries(&tree_ids, v, idset, qid->id, dpath,
450 05118f5a 2021-06-22 stsp mtime, repo, loose_obj_only, cancel_cb, cancel_arg);
451 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
456 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&tree_ids);
457 e6bcace5 2021-06-22 stsp return err;
460 e6bcace5 2021-06-22 stsp static const struct got_error *
461 e6bcace5 2021-06-22 stsp load_commit(struct got_pack_metavec *v, struct got_object_idset *idset,
462 05118f5a 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
463 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
465 e6bcace5 2021-06-22 stsp const struct got_error *err;
466 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
468 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, id))
469 e6bcace5 2021-06-22 stsp return NULL;
471 05118f5a 2021-06-22 stsp if (loose_obj_only) {
472 05118f5a 2021-06-22 stsp int is_packed;
473 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
475 05118f5a 2021-06-22 stsp return err;
476 05118f5a 2021-06-22 stsp if (is_packed)
477 05118f5a 2021-06-22 stsp return NULL;
480 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, id);
482 e6bcace5 2021-06-22 stsp return err;
484 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, id, "", GOT_OBJ_TYPE_COMMIT,
485 05118f5a 2021-06-22 stsp got_object_commit_get_committer_time(commit),
486 05118f5a 2021-06-22 stsp loose_obj_only, repo);
490 e6bcace5 2021-06-22 stsp err = load_tree(v, idset, got_object_commit_get_tree_id(commit),
491 05118f5a 2021-06-22 stsp "", got_object_commit_get_committer_time(commit),
492 05118f5a 2021-06-22 stsp loose_obj_only, repo, cancel_cb, cancel_arg);
494 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
495 e6bcace5 2021-06-22 stsp return err;
498 05118f5a 2021-06-22 stsp static const struct got_error *
499 05118f5a 2021-06-22 stsp load_tag(struct got_pack_metavec *v, struct got_object_idset *idset,
500 05118f5a 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
501 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
503 05118f5a 2021-06-22 stsp const struct got_error *err;
504 05118f5a 2021-06-22 stsp struct got_tag_object *tag = NULL;
506 05118f5a 2021-06-22 stsp if (got_object_idset_contains(idset, id))
507 05118f5a 2021-06-22 stsp return NULL;
509 05118f5a 2021-06-22 stsp if (loose_obj_only) {
510 05118f5a 2021-06-22 stsp int is_packed;
511 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
513 05118f5a 2021-06-22 stsp return err;
514 05118f5a 2021-06-22 stsp if (is_packed)
515 05118f5a 2021-06-22 stsp return NULL;
518 05118f5a 2021-06-22 stsp err = got_object_open_as_tag(&tag, repo, id);
520 05118f5a 2021-06-22 stsp return err;
522 05118f5a 2021-06-22 stsp err = add_meta(v, idset, id, "", GOT_OBJ_TYPE_TAG,
523 05118f5a 2021-06-22 stsp got_object_tag_get_tagger_time(tag),
524 05118f5a 2021-06-22 stsp loose_obj_only, repo);
528 05118f5a 2021-06-22 stsp switch (got_object_tag_get_object_type(tag)) {
529 05118f5a 2021-06-22 stsp case GOT_OBJ_TYPE_COMMIT:
530 05118f5a 2021-06-22 stsp err = load_commit(NULL, idset,
531 05118f5a 2021-06-22 stsp got_object_tag_get_object_id(tag), repo,
532 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
534 05118f5a 2021-06-22 stsp case GOT_OBJ_TYPE_TREE:
535 05118f5a 2021-06-22 stsp err = load_tree(v, idset, got_object_tag_get_object_id(tag),
536 05118f5a 2021-06-22 stsp "", got_object_tag_get_tagger_time(tag),
537 05118f5a 2021-06-22 stsp loose_obj_only, repo, cancel_cb, cancel_arg);
544 05118f5a 2021-06-22 stsp got_object_tag_close(tag);
545 05118f5a 2021-06-22 stsp return err;
548 e6bcace5 2021-06-22 stsp enum findtwixt_color {
549 e6bcace5 2021-06-22 stsp COLOR_KEEP = 0,
550 e6bcace5 2021-06-22 stsp COLOR_DROP,
551 e6bcace5 2021-06-22 stsp COLOR_BLANK,
553 e6bcace5 2021-06-22 stsp static const int findtwixt_colors[] = {
554 e6bcace5 2021-06-22 stsp COLOR_KEEP,
555 e6bcace5 2021-06-22 stsp COLOR_DROP,
556 e6bcace5 2021-06-22 stsp COLOR_BLANK
559 e6bcace5 2021-06-22 stsp static const struct got_error *
560 e6bcace5 2021-06-22 stsp queue_commit_id(struct got_object_id_queue *ids, struct got_object_id *id,
561 e6bcace5 2021-06-22 stsp int color, struct got_repository *repo)
563 e6bcace5 2021-06-22 stsp const struct got_error *err;
564 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
566 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
568 e6bcace5 2021-06-22 stsp return err;
570 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(ids, qid, entry);
571 e6bcace5 2021-06-22 stsp qid->data = (void *)&findtwixt_colors[color];
572 e6bcace5 2021-06-22 stsp return NULL;
575 e6bcace5 2021-06-22 stsp static const struct got_error *
576 e6bcace5 2021-06-22 stsp drop_commit(struct got_object_idset *keep, struct got_object_idset *drop,
577 e6bcace5 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo,
578 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
580 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
581 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
582 e6bcace5 2021-06-22 stsp const struct got_object_id_queue *parents;
583 e6bcace5 2021-06-22 stsp struct got_object_id_queue ids;
584 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
586 dbdddfee 2021-06-23 naddy STAILQ_INIT(&ids);
588 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
590 e6bcace5 2021-06-22 stsp return err;
591 dbdddfee 2021-06-23 naddy STAILQ_INSERT_HEAD(&ids, qid, entry);
593 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&ids)) {
594 e6bcace5 2021-06-22 stsp if (cancel_cb) {
595 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
600 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(&ids);
601 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&ids, entry);
603 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(drop, qid->id)) {
604 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
608 07165b17 2021-07-01 stsp err = got_object_idset_add(drop, qid->id,
609 07165b17 2021-07-01 stsp (void *)&obj_types[GOT_OBJ_TYPE_COMMIT]);
611 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
615 e6bcace5 2021-06-22 stsp if (!got_object_idset_contains(keep, qid->id)) {
616 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
620 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, qid->id);
621 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
625 e6bcace5 2021-06-22 stsp parents = got_object_commit_get_parent_ids(commit);
626 e6bcace5 2021-06-22 stsp if (parents) {
627 e6bcace5 2021-06-22 stsp err = got_object_id_queue_copy(parents, &ids);
629 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
633 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
636 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&ids);
637 e6bcace5 2021-06-22 stsp return err;
640 e6bcace5 2021-06-22 stsp struct append_id_arg {
641 e6bcace5 2021-06-22 stsp struct got_object_id **array;
645 e6bcace5 2021-06-22 stsp static const struct got_error *
646 e6bcace5 2021-06-22 stsp append_id(struct got_object_id *id, void *data, void *arg)
648 e6bcace5 2021-06-22 stsp struct append_id_arg *a = arg;
650 e6bcace5 2021-06-22 stsp a->array[a->idx] = got_object_id_dup(id);
651 e6bcace5 2021-06-22 stsp if (a->array[a->idx] == NULL)
652 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_id_dup");
655 e6bcace5 2021-06-22 stsp return NULL;
658 e6bcace5 2021-06-22 stsp static const struct got_error *
659 e6bcace5 2021-06-22 stsp findtwixt(struct got_object_id ***res, int *nres,
660 e6bcace5 2021-06-22 stsp struct got_object_id **head, int nhead,
661 e6bcace5 2021-06-22 stsp struct got_object_id **tail, int ntail,
662 e6bcace5 2021-06-22 stsp struct got_repository *repo,
663 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
665 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
666 e6bcace5 2021-06-22 stsp struct got_object_id_queue ids;
667 e6bcace5 2021-06-22 stsp struct got_object_idset *keep, *drop;
668 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
669 05118f5a 2021-06-22 stsp int i, ncolor, nkeep, obj_type;
671 dbdddfee 2021-06-23 naddy STAILQ_INIT(&ids);
672 e6bcace5 2021-06-22 stsp *res = NULL;
675 e6bcace5 2021-06-22 stsp keep = got_object_idset_alloc();
676 e6bcace5 2021-06-22 stsp if (keep == NULL)
677 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_idset_alloc");
679 e6bcace5 2021-06-22 stsp drop = got_object_idset_alloc();
680 e6bcace5 2021-06-22 stsp if (drop == NULL) {
681 e6bcace5 2021-06-22 stsp err = got_error_from_errno("got_object_idset_alloc");
685 05118f5a 2021-06-22 stsp for (i = 0; i < nhead; i++) {
686 05118f5a 2021-06-22 stsp struct got_object_id *id = head[i];
687 05118f5a 2021-06-22 stsp if (id == NULL)
689 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
691 05118f5a 2021-06-22 stsp return err;
692 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
694 05118f5a 2021-06-22 stsp err = queue_commit_id(&ids, id, COLOR_KEEP, repo);
698 05118f5a 2021-06-22 stsp for (i = 0; i < ntail; i++) {
699 05118f5a 2021-06-22 stsp struct got_object_id *id = tail[i];
700 05118f5a 2021-06-22 stsp if (id == NULL)
702 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
704 05118f5a 2021-06-22 stsp return err;
705 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
707 05118f5a 2021-06-22 stsp err = queue_commit_id(&ids, id, COLOR_DROP, repo);
712 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&ids)) {
713 e6bcace5 2021-06-22 stsp int qcolor;
714 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(&ids);
715 e6bcace5 2021-06-22 stsp qcolor = *((int *)qid->data);
717 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(drop, qid->id))
718 e6bcace5 2021-06-22 stsp ncolor = COLOR_DROP;
719 e6bcace5 2021-06-22 stsp else if (got_object_idset_contains(keep, qid->id))
720 e6bcace5 2021-06-22 stsp ncolor = COLOR_KEEP;
722 e6bcace5 2021-06-22 stsp ncolor = COLOR_BLANK;
724 e6bcace5 2021-06-22 stsp if (ncolor == COLOR_DROP || (ncolor == COLOR_KEEP &&
725 e6bcace5 2021-06-22 stsp qcolor == COLOR_KEEP)) {
726 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&ids, entry);
727 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
731 e6bcace5 2021-06-22 stsp if (ncolor == COLOR_KEEP && qcolor == COLOR_DROP) {
732 e6bcace5 2021-06-22 stsp err = drop_commit(keep, drop, qid->id, repo,
733 e6bcace5 2021-06-22 stsp cancel_cb, cancel_arg);
736 e6bcace5 2021-06-22 stsp } else if (ncolor == COLOR_BLANK) {
737 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
738 e6bcace5 2021-06-22 stsp struct got_object_id *id;
739 e6bcace5 2021-06-22 stsp const struct got_object_id_queue *parents;
740 e6bcace5 2021-06-22 stsp struct got_object_qid *pid;
742 e6bcace5 2021-06-22 stsp id = got_object_id_dup(qid->id);
743 e6bcace5 2021-06-22 stsp if (id == NULL) {
744 e6bcace5 2021-06-22 stsp err = got_error_from_errno("got_object_id_dup");
747 e6bcace5 2021-06-22 stsp if (qcolor == COLOR_KEEP)
748 07165b17 2021-07-01 stsp err = got_object_idset_add(keep, id,
749 07165b17 2021-07-01 stsp (void *)&obj_types[GOT_OBJ_TYPE_COMMIT]);
751 07165b17 2021-07-01 stsp err = got_object_idset_add(drop, id,
752 07165b17 2021-07-01 stsp (void *)&obj_types[GOT_OBJ_TYPE_COMMIT]);
758 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, id);
763 e6bcace5 2021-06-22 stsp parents = got_object_commit_get_parent_ids(commit);
764 e6bcace5 2021-06-22 stsp if (parents) {
765 dbdddfee 2021-06-23 naddy STAILQ_FOREACH(pid, parents, entry) {
766 e6bcace5 2021-06-22 stsp err = queue_commit_id(&ids, pid->id,
767 e6bcace5 2021-06-22 stsp qcolor, repo);
774 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
775 e6bcace5 2021-06-22 stsp commit = NULL;
777 e6bcace5 2021-06-22 stsp /* should not happen */
778 e6bcace5 2021-06-22 stsp err = got_error_fmt(GOT_ERR_NOT_IMPL,
779 e6bcace5 2021-06-22 stsp "%s ncolor=%d qcolor=%d", __func__, ncolor, qcolor);
783 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&ids, entry);
784 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
787 e6bcace5 2021-06-22 stsp nkeep = got_object_idset_num_elements(keep);
788 e6bcace5 2021-06-22 stsp if (nkeep > 0) {
789 e6bcace5 2021-06-22 stsp struct append_id_arg arg;
790 e6bcace5 2021-06-22 stsp arg.array = calloc(nkeep, sizeof(struct got_object_id *));
791 e6bcace5 2021-06-22 stsp if (arg.array == NULL) {
792 e6bcace5 2021-06-22 stsp err = got_error_from_errno("calloc");
795 e6bcace5 2021-06-22 stsp arg.idx = 0;
796 e6bcace5 2021-06-22 stsp err = got_object_idset_for_each(keep, append_id, &arg);
798 e6bcace5 2021-06-22 stsp free(arg.array);
801 e6bcace5 2021-06-22 stsp *res = arg.array;
802 e6bcace5 2021-06-22 stsp *nres = nkeep;
805 e6bcace5 2021-06-22 stsp got_object_idset_free(keep);
806 e6bcace5 2021-06-22 stsp got_object_idset_free(drop);
807 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&ids);
808 e6bcace5 2021-06-22 stsp return err;
811 e6bcace5 2021-06-22 stsp static const struct got_error *
812 e6bcace5 2021-06-22 stsp read_meta(struct got_pack_meta ***meta, int *nmeta,
813 e6bcace5 2021-06-22 stsp struct got_object_id **theirs, int ntheirs,
814 e6bcace5 2021-06-22 stsp struct got_object_id **ours, int nours, struct got_repository *repo,
815 05118f5a 2021-06-22 stsp int loose_obj_only, got_pack_progress_cb progress_cb, void *progress_arg,
816 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
818 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
819 e6bcace5 2021-06-22 stsp struct got_object_id **ids = NULL;
820 e6bcace5 2021-06-22 stsp struct got_object_idset *idset;
821 05118f5a 2021-06-22 stsp int i, nobj = 0, obj_type;
822 e6bcace5 2021-06-22 stsp struct got_pack_metavec v;
824 e6bcace5 2021-06-22 stsp *meta = NULL;
825 e6bcace5 2021-06-22 stsp *nmeta = 0;
827 e6bcace5 2021-06-22 stsp idset = got_object_idset_alloc();
828 e6bcace5 2021-06-22 stsp if (idset == NULL)
829 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_idset_alloc");
831 e6bcace5 2021-06-22 stsp v.nmeta = 0;
832 e6bcace5 2021-06-22 stsp v.metasz = 64;
833 e6bcace5 2021-06-22 stsp v.meta = calloc(v.metasz, sizeof(struct got_pack_meta *));
834 e6bcace5 2021-06-22 stsp if (v.meta == NULL) {
835 e6bcace5 2021-06-22 stsp err = got_error_from_errno("reallocarray");
839 e6bcace5 2021-06-22 stsp err = findtwixt(&ids, &nobj, ours, nours, theirs, ntheirs, repo,
840 e6bcace5 2021-06-22 stsp cancel_cb, cancel_arg);
841 e6bcace5 2021-06-22 stsp if (err || nobj == 0)
844 e6bcace5 2021-06-22 stsp for (i = 0; i < ntheirs; i++) {
845 05118f5a 2021-06-22 stsp struct got_object_id *id = theirs[i];
846 05118f5a 2021-06-22 stsp if (id == NULL)
848 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
850 05118f5a 2021-06-22 stsp return err;
851 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
853 05118f5a 2021-06-22 stsp err = load_commit(NULL, idset, id, repo,
854 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
857 05118f5a 2021-06-22 stsp if (progress_cb) {
858 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
859 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
865 05118f5a 2021-06-22 stsp for (i = 0; i < ntheirs; i++) {
866 f4a2ff2d 2021-07-01 stsp struct got_object_id *id = theirs[i];
867 07165b17 2021-07-01 stsp int *cached_type;
868 05118f5a 2021-06-22 stsp if (id == NULL)
870 07165b17 2021-07-01 stsp cached_type = got_object_idset_get(idset, id);
871 07165b17 2021-07-01 stsp if (cached_type == NULL) {
872 07165b17 2021-07-01 stsp err = got_object_get_type(&obj_type, repo, id);
876 07165b17 2021-07-01 stsp obj_type = *cached_type;
877 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_TAG)
879 05118f5a 2021-06-22 stsp err = load_tag(NULL, idset, id, repo,
880 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
883 05118f5a 2021-06-22 stsp if (progress_cb) {
884 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
885 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
891 eca70f98 2021-09-03 stsp for (i = 0; i < nobj; i++) {
892 eca70f98 2021-09-03 stsp err = load_commit(&v, idset, ids[i], repo,
893 eca70f98 2021-09-03 stsp loose_obj_only, cancel_cb, cancel_arg);
896 eca70f98 2021-09-03 stsp if (progress_cb) {
897 eca70f98 2021-09-03 stsp err = progress_cb(progress_arg, 0L, nours,
898 eca70f98 2021-09-03 stsp v.nmeta, 0, 0);
904 05118f5a 2021-06-22 stsp for (i = 0; i < nours; i++) {
905 05118f5a 2021-06-22 stsp struct got_object_id *id = ours[i];
906 07165b17 2021-07-01 stsp int *cached_type;
907 05118f5a 2021-06-22 stsp if (id == NULL)
909 07165b17 2021-07-01 stsp cached_type = got_object_idset_get(idset, id);
910 07165b17 2021-07-01 stsp if (cached_type == NULL) {
911 07165b17 2021-07-01 stsp err = got_object_get_type(&obj_type, repo, id);
915 07165b17 2021-07-01 stsp obj_type = *cached_type;
916 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_TAG)
918 05118f5a 2021-06-22 stsp err = load_tag(&v, idset, id, repo,
919 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
922 05118f5a 2021-06-22 stsp if (progress_cb) {
923 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
924 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
931 e6bcace5 2021-06-22 stsp for (i = 0; i < nobj; i++) {
932 e6bcace5 2021-06-22 stsp free(ids[i]);
935 e6bcace5 2021-06-22 stsp got_object_idset_free(idset);
936 e6bcace5 2021-06-22 stsp if (err == NULL) {
937 e6bcace5 2021-06-22 stsp *meta = v.meta;
938 e6bcace5 2021-06-22 stsp *nmeta = v.nmeta;
940 e6bcace5 2021-06-22 stsp free(v.meta);
942 e6bcace5 2021-06-22 stsp return err;
945 e6bcace5 2021-06-22 stsp const struct got_error *
946 e6bcace5 2021-06-22 stsp hwrite(FILE *f, void *buf, int len, SHA1_CTX *ctx)
950 e6bcace5 2021-06-22 stsp SHA1Update(ctx, buf, len);
951 e6bcace5 2021-06-22 stsp n = fwrite(buf, 1, len, f);
952 e6bcace5 2021-06-22 stsp if (n != len)
953 e6bcace5 2021-06-22 stsp return got_ferror(f, GOT_ERR_IO);
954 e6bcace5 2021-06-22 stsp return NULL;
957 e6bcace5 2021-06-22 stsp static void
958 e6bcace5 2021-06-22 stsp putbe32(char *b, uint32_t n)
960 e6bcace5 2021-06-22 stsp b[0] = n >> 24;
961 e6bcace5 2021-06-22 stsp b[1] = n >> 16;
962 e6bcace5 2021-06-22 stsp b[2] = n >> 8;
963 e6bcace5 2021-06-22 stsp b[3] = n >> 0;
967 e6bcace5 2021-06-22 stsp write_order_cmp(const void *pa, const void *pb)
969 e6bcace5 2021-06-22 stsp struct got_pack_meta *a, *b, *ahd, *bhd;
971 e6bcace5 2021-06-22 stsp a = *(struct got_pack_meta **)pa;
972 e6bcace5 2021-06-22 stsp b = *(struct got_pack_meta **)pb;
973 e6bcace5 2021-06-22 stsp ahd = (a->head == NULL) ? a : a->head;
974 e6bcace5 2021-06-22 stsp bhd = (b->head == NULL) ? b : b->head;
975 e6bcace5 2021-06-22 stsp if (ahd->mtime != bhd->mtime)
976 e6bcace5 2021-06-22 stsp return bhd->mtime - ahd->mtime;
977 e6bcace5 2021-06-22 stsp if (ahd != bhd)
978 e6bcace5 2021-06-22 stsp return (uintptr_t)bhd - (uintptr_t)ahd;
979 e6bcace5 2021-06-22 stsp if (a->nchain != b->nchain)
980 e6bcace5 2021-06-22 stsp return a->nchain - b->nchain;
981 e6bcace5 2021-06-22 stsp return a->mtime - b->mtime;
984 e6bcace5 2021-06-22 stsp static const struct got_error *
985 e6bcace5 2021-06-22 stsp packhdr(int *hdrlen, char *hdr, size_t bufsize, int obj_type, size_t len)
989 e6bcace5 2021-06-22 stsp *hdrlen = 0;
991 e6bcace5 2021-06-22 stsp hdr[0] = obj_type << 4;
992 e6bcace5 2021-06-22 stsp hdr[0] |= len & 0xf;
994 e6bcace5 2021-06-22 stsp for (i = 1; len != 0; i++){
995 e6bcace5 2021-06-22 stsp if (i >= bufsize)
996 e6bcace5 2021-06-22 stsp return got_error(GOT_ERR_NO_SPACE);
997 e6bcace5 2021-06-22 stsp hdr[i - 1] |= GOT_DELTA_SIZE_MORE;
998 e6bcace5 2021-06-22 stsp hdr[i] = len & GOT_DELTA_SIZE_VAL_MASK;
999 e6bcace5 2021-06-22 stsp len >>= GOT_DELTA_SIZE_SHIFT;
1002 e6bcace5 2021-06-22 stsp *hdrlen = i;
1003 e6bcace5 2021-06-22 stsp return NULL;
1006 e6bcace5 2021-06-22 stsp static const struct got_error *
1007 e6bcace5 2021-06-22 stsp append(char **p, int *len, int *sz, void *seg, int nseg)
1011 e6bcace5 2021-06-22 stsp if (*len + nseg >= *sz) {
1012 e6bcace5 2021-06-22 stsp while (*len + nseg >= *sz)
1013 e6bcace5 2021-06-22 stsp *sz += *sz / 2;
1014 e6bcace5 2021-06-22 stsp n = realloc(*p, *sz);
1015 e6bcace5 2021-06-22 stsp if (n == NULL)
1016 e6bcace5 2021-06-22 stsp return got_error_from_errno("realloc");
1019 e6bcace5 2021-06-22 stsp memcpy(*p + *len, seg, nseg);
1020 e6bcace5 2021-06-22 stsp *len += nseg;
1021 e6bcace5 2021-06-22 stsp return NULL;
1025 e6bcace5 2021-06-22 stsp static const struct got_error *
1026 e6bcace5 2021-06-22 stsp encodedelta(int *nd, struct got_pack_meta *m, struct got_raw_object *o,
1027 e6bcace5 2021-06-22 stsp off_t base_size, char **pp)
1029 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
1031 e6bcace5 2021-06-22 stsp unsigned char buf[16], *bp;
1032 e6bcace5 2021-06-22 stsp int len, sz, i, j;
1034 e6bcace5 2021-06-22 stsp struct got_delta_instruction *d;
1036 e6bcace5 2021-06-22 stsp *pp = NULL;
1041 e6bcace5 2021-06-22 stsp p = malloc(sz);
1042 e6bcace5 2021-06-22 stsp if (p == NULL)
1043 e6bcace5 2021-06-22 stsp return got_error_from_errno("malloc");
1045 e6bcace5 2021-06-22 stsp /* base object size */
1046 e6bcace5 2021-06-22 stsp buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
1047 e6bcace5 2021-06-22 stsp n = base_size >> GOT_DELTA_SIZE_SHIFT;
1048 e6bcace5 2021-06-22 stsp for (i = 1; n > 0; i++) {
1049 e6bcace5 2021-06-22 stsp buf[i - 1] |= GOT_DELTA_SIZE_MORE;
1050 e6bcace5 2021-06-22 stsp buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
1051 e6bcace5 2021-06-22 stsp n >>= GOT_DELTA_SIZE_SHIFT;
1053 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, i);
1055 e6bcace5 2021-06-22 stsp return err;
1057 e6bcace5 2021-06-22 stsp /* target object size */
1058 e6bcace5 2021-06-22 stsp buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
1059 e6bcace5 2021-06-22 stsp n = o->size >> GOT_DELTA_SIZE_SHIFT;
1060 e6bcace5 2021-06-22 stsp for (i = 1; n > 0; i++) {
1061 e6bcace5 2021-06-22 stsp buf[i - 1] |= GOT_DELTA_SIZE_MORE;
1062 e6bcace5 2021-06-22 stsp buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
1063 e6bcace5 2021-06-22 stsp n >>= GOT_DELTA_SIZE_SHIFT;
1065 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, i);
1067 e6bcace5 2021-06-22 stsp return err;
1068 e6bcace5 2021-06-22 stsp for (j = 0; j < m->ndeltas; j++) {
1069 e6bcace5 2021-06-22 stsp d = &m->deltas[j];
1070 e6bcace5 2021-06-22 stsp if (d->copy) {
1071 e6bcace5 2021-06-22 stsp n = d->offset;
1072 e6bcace5 2021-06-22 stsp bp = &buf[1];
1073 e6bcace5 2021-06-22 stsp buf[0] = GOT_DELTA_BASE_COPY;
1074 e6bcace5 2021-06-22 stsp for (i = 0; i < 4; i++) {
1075 e6bcace5 2021-06-22 stsp /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
1076 e6bcace5 2021-06-22 stsp buf[0] |= 1 << i;
1077 e6bcace5 2021-06-22 stsp *bp++ = n & 0xff;
1079 e6bcace5 2021-06-22 stsp if (n == 0)
1083 e6bcace5 2021-06-22 stsp n = d->len;
1084 e6bcace5 2021-06-22 stsp if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
1085 e6bcace5 2021-06-22 stsp /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
1086 e6bcace5 2021-06-22 stsp for (i = 0; i < 3 && n > 0; i++) {
1087 e6bcace5 2021-06-22 stsp buf[0] |= 1 << (i + 4);
1088 e6bcace5 2021-06-22 stsp *bp++ = n & 0xff;
1092 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, bp - buf);
1094 e6bcace5 2021-06-22 stsp return err;
1096 e6bcace5 2021-06-22 stsp char content[128];
1098 e6bcace5 2021-06-22 stsp if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1)
1099 e6bcace5 2021-06-22 stsp return got_error_from_errno("fseeko");
1101 e6bcace5 2021-06-22 stsp while (n != d->len) {
1102 e6bcace5 2021-06-22 stsp buf[0] = (d->len - n < 127) ? d->len - n : 127;
1103 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, 1);
1105 e6bcace5 2021-06-22 stsp return err;
1106 e6bcace5 2021-06-22 stsp r = fread(content, 1, buf[0], o->f);
1107 e6bcace5 2021-06-22 stsp if (r != buf[0])
1108 e6bcace5 2021-06-22 stsp return got_ferror(o->f, GOT_ERR_IO);
1109 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, content, buf[0]);
1111 e6bcace5 2021-06-22 stsp return err;
1112 e6bcace5 2021-06-22 stsp n += buf[0];
1117 e6bcace5 2021-06-22 stsp *nd = len;
1118 e6bcace5 2021-06-22 stsp return NULL;
1121 e6bcace5 2021-06-22 stsp static int
1122 e6bcace5 2021-06-22 stsp packoff(char *hdr, off_t off)
1125 e6bcace5 2021-06-22 stsp char rbuf[8];
1127 e6bcace5 2021-06-22 stsp rbuf[0] = off & GOT_DELTA_SIZE_VAL_MASK;
1128 e6bcace5 2021-06-22 stsp for (i = 1; (off >>= GOT_DELTA_SIZE_SHIFT) != 0; i++) {
1129 e6bcace5 2021-06-22 stsp rbuf[i] = (--off & GOT_DELTA_SIZE_VAL_MASK) |
1130 e6bcace5 2021-06-22 stsp GOT_DELTA_SIZE_MORE;
1134 e6bcace5 2021-06-22 stsp while (i > 0)
1135 e6bcace5 2021-06-22 stsp hdr[j++] = rbuf[--i];
1139 e6bcace5 2021-06-22 stsp static const struct got_error *
1140 e6bcace5 2021-06-22 stsp genpack(uint8_t *pack_sha1, FILE *packfile,
1141 05118f5a 2021-06-22 stsp struct got_pack_meta **meta, int nmeta, int nours,
1142 05118f5a 2021-06-22 stsp int use_offset_deltas, struct got_repository *repo,
1143 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
1144 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
1146 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
1147 05118f5a 2021-06-22 stsp int i, nh, nd;
1148 e6bcace5 2021-06-22 stsp SHA1_CTX ctx;
1149 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
1150 e6bcace5 2021-06-22 stsp struct got_raw_object *raw;
1151 e6bcace5 2021-06-22 stsp char *p = NULL, buf[32];
1152 e6bcace5 2021-06-22 stsp size_t outlen, n;
1153 e6bcace5 2021-06-22 stsp struct got_deflate_checksum csum;
1154 05118f5a 2021-06-22 stsp off_t packfile_size = 0;
1156 e6bcace5 2021-06-22 stsp SHA1Init(&ctx);
1157 e6bcace5 2021-06-22 stsp csum.output_sha1 = &ctx;
1158 e6bcace5 2021-06-22 stsp csum.output_crc = NULL;
1160 e6bcace5 2021-06-22 stsp err = hwrite(packfile, "PACK", 4, &ctx);
1162 e6bcace5 2021-06-22 stsp return err;
1163 e6bcace5 2021-06-22 stsp putbe32(buf, GOT_PACKFILE_VERSION);
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 putbe32(buf, nmeta);
1168 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, 4, &ctx);
1170 e6bcace5 2021-06-22 stsp goto done;
1171 e6bcace5 2021-06-22 stsp qsort(meta, nmeta, sizeof(struct got_pack_meta *), write_order_cmp);
1172 05118f5a 2021-06-22 stsp for (i = 0; i < nmeta; i++) {
1173 05118f5a 2021-06-22 stsp if (progress_cb) {
1174 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, packfile_size, nours,
1175 05118f5a 2021-06-22 stsp nmeta, nmeta, i);
1177 05118f5a 2021-06-22 stsp goto done;
1179 e6bcace5 2021-06-22 stsp m = meta[i];
1180 e6bcace5 2021-06-22 stsp m->off = ftello(packfile);
1181 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&raw, repo, &m->id, 8192);
1183 e6bcace5 2021-06-22 stsp goto done;
1184 e6bcace5 2021-06-22 stsp if (m->deltas == NULL) {
1185 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1186 e6bcace5 2021-06-22 stsp m->obj_type, raw->size);
1188 e6bcace5 2021-06-22 stsp goto done;
1189 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1191 e6bcace5 2021-06-22 stsp goto done;
1192 05118f5a 2021-06-22 stsp packfile_size += nh;
1193 e6bcace5 2021-06-22 stsp if (fseeko(raw->f, raw->hdrlen, SEEK_SET) == -1) {
1194 e6bcace5 2021-06-22 stsp err = got_error_from_errno("fseeko");
1195 e6bcace5 2021-06-22 stsp goto done;
1197 e6bcace5 2021-06-22 stsp err = got_deflate_to_file(&outlen, raw->f, packfile,
1200 e6bcace5 2021-06-22 stsp goto done;
1201 05118f5a 2021-06-22 stsp packfile_size += outlen;
1203 e6bcace5 2021-06-22 stsp FILE *delta_file;
1204 e6bcace5 2021-06-22 stsp struct got_raw_object *base_raw;
1205 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&base_raw, repo,
1206 e6bcace5 2021-06-22 stsp &m->prev->id, 8192);
1208 e6bcace5 2021-06-22 stsp goto done;
1209 e6bcace5 2021-06-22 stsp err = encodedelta(&nd, m, raw, base_raw->size, &p);
1211 e6bcace5 2021-06-22 stsp goto done;
1212 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
1213 e6bcace5 2021-06-22 stsp if (use_offset_deltas && m->prev->off != 0) {
1214 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1215 e6bcace5 2021-06-22 stsp GOT_OBJ_TYPE_OFFSET_DELTA, nd);
1217 e6bcace5 2021-06-22 stsp goto done;
1218 e6bcace5 2021-06-22 stsp nh += packoff(buf + nh,
1219 e6bcace5 2021-06-22 stsp m->off - m->prev->off);
1220 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1222 e6bcace5 2021-06-22 stsp goto done;
1223 05118f5a 2021-06-22 stsp packfile_size += nh;
1225 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1226 e6bcace5 2021-06-22 stsp GOT_OBJ_TYPE_REF_DELTA, nd);
1227 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1229 e6bcace5 2021-06-22 stsp goto done;
1230 05118f5a 2021-06-22 stsp packfile_size += nh;
1231 e6bcace5 2021-06-22 stsp err = hwrite(packfile, m->prev->id.sha1,
1232 e6bcace5 2021-06-22 stsp sizeof(m->prev->id.sha1), &ctx);
1233 05118f5a 2021-06-22 stsp packfile_size += sizeof(m->prev->id.sha1);
1235 e6bcace5 2021-06-22 stsp goto done;
1237 e6bcace5 2021-06-22 stsp /* XXX need got_deflate_from_mem() */
1238 e6bcace5 2021-06-22 stsp delta_file = fmemopen(p, nd, "r");
1239 e6bcace5 2021-06-22 stsp if (delta_file == NULL) {
1240 e6bcace5 2021-06-22 stsp err = got_error_from_errno("fmemopen");
1241 e6bcace5 2021-06-22 stsp goto done;
1243 e6bcace5 2021-06-22 stsp err = got_deflate_to_file(&outlen, delta_file,
1244 e6bcace5 2021-06-22 stsp packfile, &csum);
1245 e6bcace5 2021-06-22 stsp fclose(delta_file);
1247 e6bcace5 2021-06-22 stsp goto done;
1248 05118f5a 2021-06-22 stsp packfile_size += outlen;
1252 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
1253 e6bcace5 2021-06-22 stsp raw = NULL;
1255 e6bcace5 2021-06-22 stsp SHA1Final(pack_sha1, &ctx);
1256 e6bcace5 2021-06-22 stsp n = fwrite(pack_sha1, 1, SHA1_DIGEST_LENGTH, packfile);
1257 e6bcace5 2021-06-22 stsp if (n != SHA1_DIGEST_LENGTH)
1258 e6bcace5 2021-06-22 stsp err = got_ferror(packfile, GOT_ERR_IO);
1259 05118f5a 2021-06-22 stsp packfile_size += SHA1_DIGEST_LENGTH;
1260 dc7edd42 2021-08-22 stsp packfile_size += sizeof(struct got_packfile_hdr);
1261 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, packfile_size, nours,
1262 05118f5a 2021-06-22 stsp nmeta, nmeta, nmeta);
1264 05118f5a 2021-06-22 stsp goto done;
1267 e6bcace5 2021-06-22 stsp return err;
1270 e6bcace5 2021-06-22 stsp const struct got_error *
1271 e6bcace5 2021-06-22 stsp got_pack_create(uint8_t *packsha1, FILE *packfile,
1272 e6bcace5 2021-06-22 stsp struct got_object_id **theirs, int ntheirs,
1273 e6bcace5 2021-06-22 stsp struct got_object_id **ours, int nours,
1274 f8a36e22 2021-08-26 stsp struct got_repository *repo, int loose_obj_only, int allow_empty,
1275 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
1276 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
1278 e6bcace5 2021-06-22 stsp const struct got_error *err;
1279 e6bcace5 2021-06-22 stsp struct got_pack_meta **meta;
1280 e6bcace5 2021-06-22 stsp int nmeta;
1282 e6bcace5 2021-06-22 stsp err = read_meta(&meta, &nmeta, theirs, ntheirs, ours, nours, repo,
1283 05118f5a 2021-06-22 stsp loose_obj_only, progress_cb, progress_arg, cancel_cb, cancel_arg);
1285 e6bcace5 2021-06-22 stsp return err;
1287 f8a36e22 2021-08-26 stsp if (nmeta == 0 && !allow_empty) {
1288 05118f5a 2021-06-22 stsp err = got_error(GOT_ERR_CANNOT_PACK);
1289 05118f5a 2021-06-22 stsp goto done;
1291 f8a36e22 2021-08-26 stsp if (nmeta > 0) {
1292 f8a36e22 2021-08-26 stsp err = pick_deltas(meta, nmeta, nours, repo,
1293 f8a36e22 2021-08-26 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
1295 f8a36e22 2021-08-26 stsp goto done;
1298 05118f5a 2021-06-22 stsp err = genpack(packsha1, packfile, meta, nmeta, nours, 1, repo,
1299 05118f5a 2021-06-22 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
1301 e6bcace5 2021-06-22 stsp goto done;
1303 e6bcace5 2021-06-22 stsp free_nmeta(meta, nmeta);
1304 e6bcace5 2021-06-22 stsp return err;
