2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 0a0a3048 2018-01-10 stsp * Permission to use, copy, modify, and distribute this software for any
5 0a0a3048 2018-01-10 stsp * purpose with or without fee is hereby granted, provided that the above
6 0a0a3048 2018-01-10 stsp * copyright notice and this permission notice appear in all copies.
8 0a0a3048 2018-01-10 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 0a0a3048 2018-01-10 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 0a0a3048 2018-01-10 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 0a0a3048 2018-01-10 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 0a0a3048 2018-01-10 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 0a0a3048 2018-01-10 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 0a0a3048 2018-01-10 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 a1fd68d8 2018-01-12 stsp #include <sys/types.h>
18 0a0a3048 2018-01-10 stsp #include <sys/stat.h>
19 a1fd68d8 2018-01-12 stsp #include <sys/queue.h>
20 876c234b 2018-09-10 stsp #include <sys/uio.h>
21 57b35b75 2018-06-22 stsp #include <sys/mman.h>
23 7e656b93 2018-03-17 stsp #include <fcntl.h>
24 a1fd68d8 2018-01-12 stsp #include <errno.h>
25 0a0a3048 2018-01-10 stsp #include <stdio.h>
26 a1fd68d8 2018-01-12 stsp #include <stdint.h>
27 0a0a3048 2018-01-10 stsp #include <stdlib.h>
28 0a0a3048 2018-01-10 stsp #include <string.h>
29 0a0a3048 2018-01-10 stsp #include <limits.h>
30 0a0a3048 2018-01-10 stsp #include <sha1.h>
31 0a0a3048 2018-01-10 stsp #include <endian.h>
32 a1fd68d8 2018-01-12 stsp #include <zlib.h>
33 876c234b 2018-09-10 stsp #include <imsg.h>
35 0a0a3048 2018-01-10 stsp #include "got_error.h"
36 a1fd68d8 2018-01-12 stsp #include "got_object.h"
37 511a516b 2018-05-19 stsp #include "got_opentemp.h"
39 718b3ab0 2018-03-17 stsp #include "got_lib_sha1.h"
40 718b3ab0 2018-03-17 stsp #include "got_lib_path.h"
41 718b3ab0 2018-03-17 stsp #include "got_lib_delta.h"
42 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
43 718b3ab0 2018-03-17 stsp #include "got_lib_object.h"
44 876c234b 2018-09-10 stsp #include "got_lib_privsep.h"
45 15a94983 2018-12-23 stsp #include "got_lib_pack.h"
47 79b11c62 2018-03-09 stsp #ifndef nitems
48 79b11c62 2018-03-09 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
52 a1fd68d8 2018-01-12 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
55 0a0a3048 2018-01-10 stsp static const struct got_error *
56 0a0a3048 2018-01-10 stsp verify_fanout_table(uint32_t *fanout_table)
60 0a0a3048 2018-01-10 stsp for (i = 0; i < 0xff - 1; i++) {
61 a1fd68d8 2018-01-12 stsp if (be32toh(fanout_table[i]) > be32toh(fanout_table[i + 1]))
62 0a0a3048 2018-01-10 stsp return got_error(GOT_ERR_BAD_PACKIDX);
65 0a0a3048 2018-01-10 stsp return NULL;
68 1510f469 2018-09-09 stsp const struct got_error *
69 1510f469 2018-09-09 stsp got_pack_get_packfile_size(size_t *size, const char *path)
71 0a0a3048 2018-01-10 stsp struct stat sb;
76 1c7e24f1 2018-04-02 stsp dot = strrchr(path, '.');
77 0a0a3048 2018-01-10 stsp if (dot == NULL)
78 0a0a3048 2018-01-10 stsp return got_error(GOT_ERR_BAD_PATH);
80 1c7e24f1 2018-04-02 stsp /* Path must point to a pack index or to a pack file. */
81 72fb0363 2018-06-04 stsp if (strcmp(dot, GOT_PACKIDX_SUFFIX) == 0) {
82 97128b57 2018-04-02 stsp const struct got_error *err = NULL;
83 1c7e24f1 2018-04-02 stsp char *path_pack;
84 1c7e24f1 2018-04-02 stsp char base_path[PATH_MAX];
86 1c7e24f1 2018-04-02 stsp /* Convert pack index path to pack file path. */
87 1c7e24f1 2018-04-02 stsp if (strlcpy(base_path, path, PATH_MAX) > PATH_MAX)
88 1c7e24f1 2018-04-02 stsp return got_error(GOT_ERR_NO_SPACE);
89 1c7e24f1 2018-04-02 stsp dot = strrchr(base_path, '.');
90 1c7e24f1 2018-04-02 stsp if (dot == NULL)
91 1c7e24f1 2018-04-02 stsp return got_error(GOT_ERR_BAD_PATH);
92 1c7e24f1 2018-04-02 stsp *dot = '\0';
93 1c7e24f1 2018-04-02 stsp if (asprintf(&path_pack, "%s.pack", base_path) == -1)
94 1c7e24f1 2018-04-02 stsp return got_error_from_errno();
96 97128b57 2018-04-02 stsp if (stat(path_pack, &sb) != 0)
97 97128b57 2018-04-02 stsp err = got_error_from_errno();
98 0a0a3048 2018-01-10 stsp free(path_pack);
100 97128b57 2018-04-02 stsp return err;
101 56cca8e5 2018-06-04 stsp } else if (strcmp(dot, GOT_PACKFILE_SUFFIX) == 0) {
102 1c7e24f1 2018-04-02 stsp if (stat(path, &sb) != 0)
103 1c7e24f1 2018-04-02 stsp return got_error_from_errno();
105 1c7e24f1 2018-04-02 stsp return got_error(GOT_ERR_BAD_PATH);
107 0a0a3048 2018-01-10 stsp *size = sb.st_size;
111 0a0a3048 2018-01-10 stsp const struct got_error *
112 817c5a18 2018-09-09 stsp got_packidx_init_hdr(struct got_packidx *p, int verify)
114 0a0a3048 2018-01-10 stsp const struct got_error *err = NULL;
115 817c5a18 2018-09-09 stsp struct got_packidx_v2_hdr *h;
116 0ebaf008 2018-01-10 stsp SHA1_CTX ctx;
117 0ebaf008 2018-01-10 stsp uint8_t sha1[SHA1_DIGEST_LENGTH];
118 817c5a18 2018-09-09 stsp size_t nobj, len_fanout, len_ids, offset, remain;
121 0ebaf008 2018-01-10 stsp SHA1Init(&ctx);
123 57b35b75 2018-06-22 stsp h = &p->hdr;
124 57b35b75 2018-06-22 stsp offset = 0;
125 57b35b75 2018-06-22 stsp remain = p->len;
127 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->magic)) {
128 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
131 fc79a48d 2018-07-09 stsp if (p->map)
132 fc79a48d 2018-07-09 stsp h->magic = (uint32_t *)(p->map + offset);
134 fc79a48d 2018-07-09 stsp h->magic = malloc(sizeof(*h->magic));
135 fc79a48d 2018-07-09 stsp if (h->magic == NULL) {
136 fc79a48d 2018-07-09 stsp err = got_error_from_errno();
139 fc79a48d 2018-07-09 stsp n = read(p->fd, h->magic, sizeof(*h->magic));
141 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
142 faaa1c0f 2018-09-15 stsp else if (n != sizeof(*h->magic)) {
143 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
147 57b35b75 2018-06-22 stsp if (betoh32(*h->magic) != GOT_PACKIDX_V2_MAGIC) {
148 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
151 57b35b75 2018-06-22 stsp offset += sizeof(*h->magic);
152 57b35b75 2018-06-22 stsp remain -= sizeof(*h->magic);
154 0cb74cf4 2018-07-08 stsp if (verify)
155 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->magic, sizeof(*h->magic));
157 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->version)) {
158 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
161 fc79a48d 2018-07-09 stsp if (p->map)
162 fc79a48d 2018-07-09 stsp h->version = (uint32_t *)(p->map + offset);
164 fc79a48d 2018-07-09 stsp h->version = malloc(sizeof(*h->version));
165 fc79a48d 2018-07-09 stsp if (h->version == NULL) {
166 fc79a48d 2018-07-09 stsp err = got_error_from_errno();
169 fc79a48d 2018-07-09 stsp n = read(p->fd, h->version, sizeof(*h->version));
171 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
172 faaa1c0f 2018-09-15 stsp else if (n != sizeof(*h->version)) {
173 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
177 57b35b75 2018-06-22 stsp if (betoh32(*h->version) != GOT_PACKIDX_VERSION) {
178 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
181 57b35b75 2018-06-22 stsp offset += sizeof(*h->version);
182 57b35b75 2018-06-22 stsp remain -= sizeof(*h->version);
184 0cb74cf4 2018-07-08 stsp if (verify)
185 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->version, sizeof(*h->version));
187 57b35b75 2018-06-22 stsp len_fanout =
188 57b35b75 2018-06-22 stsp sizeof(*h->fanout_table) * GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS;
189 57b35b75 2018-06-22 stsp if (remain < len_fanout) {
190 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
193 fc79a48d 2018-07-09 stsp if (p->map)
194 fc79a48d 2018-07-09 stsp h->fanout_table = (uint32_t *)(p->map + offset);
196 fc79a48d 2018-07-09 stsp h->fanout_table = malloc(len_fanout);
197 fc79a48d 2018-07-09 stsp if (h->fanout_table == NULL) {
198 fc79a48d 2018-07-09 stsp err = got_error_from_errno();
201 fc79a48d 2018-07-09 stsp n = read(p->fd, h->fanout_table, len_fanout);
203 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
204 faaa1c0f 2018-09-15 stsp else if (n != len_fanout) {
205 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
209 c8262310 2018-06-04 stsp err = verify_fanout_table(h->fanout_table);
212 0cb74cf4 2018-07-08 stsp if (verify)
213 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->fanout_table, len_fanout);
214 57b35b75 2018-06-22 stsp offset += len_fanout;
215 57b35b75 2018-06-22 stsp remain -= len_fanout;
217 c8262310 2018-06-04 stsp nobj = betoh32(h->fanout_table[0xff]);
218 57b35b75 2018-06-22 stsp len_ids = nobj * sizeof(*h->sorted_ids);
219 57b35b75 2018-06-22 stsp if (len_ids <= nobj || len_ids > remain) {
220 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
223 fc79a48d 2018-07-09 stsp if (p->map)
224 fc79a48d 2018-07-09 stsp h->sorted_ids =
225 fc79a48d 2018-07-09 stsp (struct got_packidx_object_id *)((uint8_t*)(p->map + offset));
227 fc79a48d 2018-07-09 stsp h->sorted_ids = malloc(len_ids);
228 fc79a48d 2018-07-09 stsp if (h->sorted_ids == NULL) {
229 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
232 fc79a48d 2018-07-09 stsp n = read(p->fd, h->sorted_ids, len_ids);
234 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
235 faaa1c0f 2018-09-15 stsp else if (n != len_ids) {
236 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
240 0cb74cf4 2018-07-08 stsp if (verify)
241 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->sorted_ids, len_ids);
242 57b35b75 2018-06-22 stsp offset += len_ids;
243 57b35b75 2018-06-22 stsp remain -= len_ids;
245 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->crc32)) {
246 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
249 fc79a48d 2018-07-09 stsp if (p->map)
250 fc79a48d 2018-07-09 stsp h->crc32 = (uint32_t *)((uint8_t*)(p->map + offset));
252 fc79a48d 2018-07-09 stsp h->crc32 = malloc(nobj * sizeof(*h->crc32));
253 fc79a48d 2018-07-09 stsp if (h->crc32 == NULL) {
254 fc79a48d 2018-07-09 stsp err = got_error_from_errno();
257 fc79a48d 2018-07-09 stsp n = read(p->fd, h->crc32, nobj * sizeof(*h->crc32));
259 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
260 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->crc32)) {
261 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
265 0cb74cf4 2018-07-08 stsp if (verify)
266 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->crc32, nobj * sizeof(*h->crc32));
267 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->crc32);
268 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->crc32);
270 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->offsets)) {
271 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
274 fc79a48d 2018-07-09 stsp if (p->map)
275 fc79a48d 2018-07-09 stsp h->offsets = (uint32_t *)((uint8_t*)(p->map + offset));
277 fc79a48d 2018-07-09 stsp h->offsets = malloc(nobj * sizeof(*h->offsets));
278 fc79a48d 2018-07-09 stsp if (h->offsets == NULL) {
279 fc79a48d 2018-07-09 stsp err = got_error_from_errno();
282 fc79a48d 2018-07-09 stsp n = read(p->fd, h->offsets, nobj * sizeof(*h->offsets));
284 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
285 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->offsets)) {
286 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
290 0cb74cf4 2018-07-08 stsp if (verify)
291 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->offsets,
292 0cb74cf4 2018-07-08 stsp nobj * sizeof(*h->offsets));
293 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->offsets);
294 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->offsets);
296 0a0a3048 2018-01-10 stsp /* Large file offsets are contained only in files > 2GB. */
297 57b35b75 2018-06-22 stsp if (p->len <= 0x80000000)
298 0a0a3048 2018-01-10 stsp goto checksum;
300 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->large_offsets)) {
301 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
304 fc79a48d 2018-07-09 stsp if (p->map)
305 fc79a48d 2018-07-09 stsp h->large_offsets = (uint64_t *)((uint8_t*)(p->map + offset));
307 fc79a48d 2018-07-09 stsp h->offsets = malloc(nobj * sizeof(*h->large_offsets));
308 fc79a48d 2018-07-09 stsp if (h->offsets == NULL) {
309 fc79a48d 2018-07-09 stsp err = got_error_from_errno();
312 fc79a48d 2018-07-09 stsp n = read(p->fd, h->large_offsets,
313 fc79a48d 2018-07-09 stsp nobj * sizeof(*h->large_offsets));
315 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
316 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->large_offsets)) {
317 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
321 0cb74cf4 2018-07-08 stsp if (verify)
322 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t*)h->large_offsets,
323 0cb74cf4 2018-07-08 stsp nobj * sizeof(*h->large_offsets));
324 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->large_offsets);
325 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->large_offsets);
328 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->trailer)) {
329 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
332 fc79a48d 2018-07-09 stsp if (p->map)
333 fc79a48d 2018-07-09 stsp h->trailer =
334 fc79a48d 2018-07-09 stsp (struct got_packidx_trailer *)((uint8_t*)(p->map + offset));
336 fc79a48d 2018-07-09 stsp h->trailer = malloc(sizeof(*h->trailer));
337 fc79a48d 2018-07-09 stsp if (h->trailer == NULL) {
338 fc79a48d 2018-07-09 stsp err = got_error_from_errno();
341 fc79a48d 2018-07-09 stsp n = read(p->fd, h->trailer, sizeof(*h->trailer));
343 faaa1c0f 2018-09-15 stsp err = got_error_from_errno();
344 faaa1c0f 2018-09-15 stsp else if (n != sizeof(*h->trailer)) {
345 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
349 0cb74cf4 2018-07-08 stsp if (verify) {
350 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, h->trailer->packfile_sha1, SHA1_DIGEST_LENGTH);
351 0cb74cf4 2018-07-08 stsp SHA1Final(sha1, &ctx);
352 0cb74cf4 2018-07-08 stsp if (memcmp(h->trailer->packidx_sha1, sha1,
353 0cb74cf4 2018-07-08 stsp SHA1_DIGEST_LENGTH) != 0)
354 0cb74cf4 2018-07-08 stsp err = got_error(GOT_ERR_PACKIDX_CSUM);
357 817c5a18 2018-09-09 stsp return err;
360 817c5a18 2018-09-09 stsp const struct got_error *
361 817c5a18 2018-09-09 stsp got_packidx_open(struct got_packidx **packidx, const char *path, int verify)
363 817c5a18 2018-09-09 stsp const struct got_error *err = NULL;
364 817c5a18 2018-09-09 stsp struct got_packidx *p;
366 817c5a18 2018-09-09 stsp *packidx = NULL;
368 817c5a18 2018-09-09 stsp p = calloc(1, sizeof(*p));
369 817c5a18 2018-09-09 stsp if (p == NULL)
370 817c5a18 2018-09-09 stsp return got_error_from_errno();
372 817c5a18 2018-09-09 stsp p->fd = open(path, O_RDONLY | O_NOFOLLOW, GOT_DEFAULT_FILE_MODE);
373 817c5a18 2018-09-09 stsp if (p->fd == -1)
374 817c5a18 2018-09-09 stsp return got_error_from_errno();
376 1510f469 2018-09-09 stsp err = got_pack_get_packfile_size(&p->len, path);
378 817c5a18 2018-09-09 stsp close(p->fd);
380 817c5a18 2018-09-09 stsp return err;
382 817c5a18 2018-09-09 stsp if (p->len < sizeof(p->hdr)) {
383 817c5a18 2018-09-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
384 817c5a18 2018-09-09 stsp close(p->fd);
386 817c5a18 2018-09-09 stsp return err;
389 817c5a18 2018-09-09 stsp p->path_packidx = strdup(path);
390 817c5a18 2018-09-09 stsp if (p->path_packidx == NULL) {
391 817c5a18 2018-09-09 stsp err = got_error_from_errno();
395 817c5a18 2018-09-09 stsp #ifndef GOT_PACK_NO_MMAP
396 817c5a18 2018-09-09 stsp p->map = mmap(NULL, p->len, PROT_READ, MAP_PRIVATE, p->fd, 0);
397 3a11398b 2019-02-21 stsp if (p->map == MAP_FAILED) {
398 3a11398b 2019-02-21 stsp if (errno != ENOMEM) {
399 3a11398b 2019-02-21 stsp err = got_error_from_errno();
402 817c5a18 2018-09-09 stsp p->map = NULL; /* fall back to read(2) */
406 817c5a18 2018-09-09 stsp err = got_packidx_init_hdr(p, verify);
409 0a0a3048 2018-01-10 stsp got_packidx_close(p);
411 0a0a3048 2018-01-10 stsp *packidx = p;
413 0a0a3048 2018-01-10 stsp return err;
416 57b35b75 2018-06-22 stsp const struct got_error *
417 6fd11751 2018-06-04 stsp got_packidx_close(struct got_packidx *packidx)
419 57b35b75 2018-06-22 stsp const struct got_error *err = NULL;
421 6fd11751 2018-06-04 stsp free(packidx->path_packidx);
422 fc79a48d 2018-07-09 stsp if (packidx->map) {
423 57b35b75 2018-06-22 stsp if (munmap(packidx->map, packidx->len) == -1)
424 57b35b75 2018-06-22 stsp err = got_error_from_errno();
426 fc79a48d 2018-07-09 stsp free(packidx->hdr.magic);
427 fc79a48d 2018-07-09 stsp free(packidx->hdr.version);
428 fc79a48d 2018-07-09 stsp free(packidx->hdr.fanout_table);
429 fc79a48d 2018-07-09 stsp free(packidx->hdr.sorted_ids);
430 fc79a48d 2018-07-09 stsp free(packidx->hdr.crc32);
431 fc79a48d 2018-07-09 stsp free(packidx->hdr.offsets);
432 fc79a48d 2018-07-09 stsp free(packidx->hdr.large_offsets);
433 fc79a48d 2018-07-09 stsp free(packidx->hdr.trailer);
435 3a6ce05a 2019-02-11 stsp if (close(packidx->fd) != 0 && err == NULL)
436 3a6ce05a 2019-02-11 stsp err = got_error_from_errno();
437 0a0a3048 2018-01-10 stsp free(packidx);
439 57b35b75 2018-06-22 stsp return err;
442 a1fd68d8 2018-01-12 stsp static off_t
443 6fd11751 2018-06-04 stsp get_object_offset(struct got_packidx *packidx, int idx)
445 6fd11751 2018-06-04 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
446 6fd11751 2018-06-04 stsp uint32_t offset = betoh32(packidx->hdr.offsets[idx]);
447 a1fd68d8 2018-01-12 stsp if (offset & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
448 a1fd68d8 2018-01-12 stsp uint64_t loffset;
449 a1fd68d8 2018-01-12 stsp idx = offset & GOT_PACKIDX_OFFSET_VAL_MASK;
450 6fd11751 2018-06-04 stsp if (idx < 0 || idx > totobj ||
451 6fd11751 2018-06-04 stsp packidx->hdr.large_offsets == NULL)
453 6fd11751 2018-06-04 stsp loffset = betoh64(packidx->hdr.large_offsets[idx]);
454 a1fd68d8 2018-01-12 stsp return (loffset > INT64_MAX ? -1 : (off_t)loffset);
456 a1fd68d8 2018-01-12 stsp return (off_t)(offset & GOT_PACKIDX_OFFSET_VAL_MASK);
460 1510f469 2018-09-09 stsp got_packidx_get_object_idx(struct got_packidx *packidx, struct got_object_id *id)
462 a1fd68d8 2018-01-12 stsp u_int8_t id0 = id->sha1[0];
463 6fd11751 2018-06-04 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
464 40aeb19c 2018-06-22 stsp int left = 0, right = totobj - 1;
466 a1fd68d8 2018-01-12 stsp if (id0 > 0)
467 40aeb19c 2018-06-22 stsp left = betoh32(packidx->hdr.fanout_table[id0 - 1]);
469 40aeb19c 2018-06-22 stsp while (left <= right) {
470 57b35b75 2018-06-22 stsp struct got_packidx_object_id *oid;
471 40aeb19c 2018-06-22 stsp int i, cmp;
473 40aeb19c 2018-06-22 stsp i = ((left + right) / 2);
474 40aeb19c 2018-06-22 stsp oid = &packidx->hdr.sorted_ids[i];
475 57b35b75 2018-06-22 stsp cmp = memcmp(id->sha1, oid->sha1, SHA1_DIGEST_LENGTH);
476 16dcbf91 2018-04-01 stsp if (cmp == 0)
478 40aeb19c 2018-06-22 stsp else if (cmp > 0)
479 40aeb19c 2018-06-22 stsp left = i + 1;
480 40aeb19c 2018-06-22 stsp else if (cmp < 0)
481 40aeb19c 2018-06-22 stsp right = i - 1;
487 876c234b 2018-09-10 stsp const struct got_error *
488 876c234b 2018-09-10 stsp got_pack_stop_privsep_child(struct got_pack *pack)
490 96732e0b 2018-11-11 stsp const struct got_error *err = NULL;
492 876c234b 2018-09-10 stsp if (pack->privsep_child == NULL)
493 876c234b 2018-09-10 stsp return NULL;
495 876c234b 2018-09-10 stsp err = got_privsep_send_stop(pack->privsep_child->imsg_fd);
497 96732e0b 2018-11-11 stsp return err;
498 96732e0b 2018-11-11 stsp err = got_privsep_wait_for_child(pack->privsep_child->pid);
499 876c234b 2018-09-10 stsp free(pack->privsep_child);
500 876c234b 2018-09-10 stsp pack->privsep_child = NULL;
501 876c234b 2018-09-10 stsp return err;
504 d7464085 2018-07-09 stsp const struct got_error *
505 7e656b93 2018-03-17 stsp got_pack_close(struct got_pack *pack)
507 d7464085 2018-07-09 stsp const struct got_error *err = NULL;
509 876c234b 2018-09-10 stsp err = got_pack_stop_privsep_child(pack);
510 876c234b 2018-09-10 stsp if (pack->map && munmap(pack->map, pack->filesize) == -1 && !err)
511 d7464085 2018-07-09 stsp err = got_error_from_errno();
512 3a6ce05a 2019-02-11 stsp if (pack->fd != -1 && close(pack->fd) != 0 && err == NULL)
513 3a6ce05a 2019-02-11 stsp err = got_error_from_errno();
514 8b2180d4 2018-04-26 stsp pack->fd = -1;
515 4589e373 2018-03-17 stsp free(pack->path_packfile);
516 4589e373 2018-03-17 stsp pack->path_packfile = NULL;
517 4589e373 2018-03-17 stsp pack->filesize = 0;
519 c7fe698a 2018-01-23 stsp return err;
522 c7fe698a 2018-01-23 stsp static const struct got_error *
523 d7464085 2018-07-09 stsp parse_object_type_and_size(uint8_t *type, uint64_t *size, size_t *len,
524 d7464085 2018-07-09 stsp struct got_pack *pack, off_t offset)
526 a487c1d0 2018-01-14 stsp uint8_t t = 0;
527 a487c1d0 2018-01-14 stsp uint64_t s = 0;
528 a487c1d0 2018-01-14 stsp uint8_t sizeN;
529 d7464085 2018-07-09 stsp size_t mapoff = 0;
534 d7464085 2018-07-09 stsp if (offset >= pack->filesize)
535 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
537 d7464085 2018-07-09 stsp if (pack->map) {
538 d7464085 2018-07-09 stsp mapoff = (size_t)offset;
540 d7464085 2018-07-09 stsp if (lseek(pack->fd, offset, SEEK_SET) == -1)
541 d7464085 2018-07-09 stsp return got_error_from_errno();
545 a1fd68d8 2018-01-12 stsp /* We do not support size values which don't fit in 64 bit. */
547 a487c1d0 2018-01-14 stsp return got_error(GOT_ERR_NO_SPACE);
549 d7464085 2018-07-09 stsp if (pack->map) {
550 d7464085 2018-07-09 stsp sizeN = *(pack->map + mapoff);
551 d7464085 2018-07-09 stsp mapoff += sizeof(sizeN);
553 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &sizeN, sizeof(sizeN));
555 d7464085 2018-07-09 stsp return got_error_from_errno();
556 d7464085 2018-07-09 stsp if (n != sizeof(sizeN))
557 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
559 d7464085 2018-07-09 stsp *len += sizeof(sizeN);
561 a1fd68d8 2018-01-12 stsp if (i == 0) {
562 a487c1d0 2018-01-14 stsp t = (sizeN & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
563 a1fd68d8 2018-01-12 stsp GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
564 a487c1d0 2018-01-14 stsp s = (sizeN & GOT_PACK_OBJ_SIZE0_VAL_MASK);
566 a1fd68d8 2018-01-12 stsp size_t shift = 4 + 7 * (i - 1);
567 a487c1d0 2018-01-14 stsp s |= ((sizeN & GOT_PACK_OBJ_SIZE_VAL_MASK) << shift);
570 a1fd68d8 2018-01-12 stsp } while (sizeN & GOT_PACK_OBJ_SIZE_MORE);
574 a487c1d0 2018-01-14 stsp return NULL;
577 a1fd68d8 2018-01-12 stsp static const struct got_error *
578 9710aac2 2018-01-19 stsp open_plain_object(struct got_object **obj, const char *path_packfile,
579 c59b3346 2018-09-11 stsp struct got_object_id *id, uint8_t type, off_t offset, size_t size, int idx)
581 6ccb713b 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
582 6ccb713b 2018-01-19 stsp if (*obj == NULL)
583 0a585a0d 2018-03-17 stsp return got_error_from_errno();
585 6ccb713b 2018-01-19 stsp (*obj)->path_packfile = strdup(path_packfile);
586 6ccb713b 2018-01-19 stsp if ((*obj)->path_packfile == NULL) {
587 0a585a0d 2018-03-17 stsp const struct got_error *err = got_error_from_errno();
588 6ccb713b 2018-01-19 stsp free(*obj);
589 6ccb713b 2018-01-19 stsp *obj = NULL;
590 0a585a0d 2018-03-17 stsp return err;
593 6ccb713b 2018-01-19 stsp (*obj)->type = type;
594 6ccb713b 2018-01-19 stsp (*obj)->flags = GOT_OBJ_FLAG_PACKED;
595 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
596 6ccb713b 2018-01-19 stsp (*obj)->hdrlen = 0;
597 6ccb713b 2018-01-19 stsp (*obj)->size = size;
598 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
599 6ccb713b 2018-01-19 stsp (*obj)->pack_offset = offset;
601 b107e67f 2018-01-19 stsp return NULL;
604 b107e67f 2018-01-19 stsp static const struct got_error *
605 d7464085 2018-07-09 stsp parse_negative_offset(int64_t *offset, size_t *len, struct got_pack *pack,
606 d7464085 2018-07-09 stsp off_t delta_offset)
608 b107e67f 2018-01-19 stsp int64_t o = 0;
609 b107e67f 2018-01-19 stsp uint8_t offN;
615 b107e67f 2018-01-19 stsp /* We do not support offset values which don't fit in 64 bit. */
617 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_NO_SPACE);
619 d7464085 2018-07-09 stsp if (pack->map) {
620 d7464085 2018-07-09 stsp size_t mapoff;
621 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
622 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
623 d7464085 2018-07-09 stsp mapoff = (size_t)delta_offset + *len;
624 d7464085 2018-07-09 stsp offN = *(pack->map + mapoff);
627 d7464085 2018-07-09 stsp n = read(pack->fd, &offN, sizeof(offN));
629 d7464085 2018-07-09 stsp return got_error_from_errno();
630 d7464085 2018-07-09 stsp if (n != sizeof(offN))
631 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
633 d7464085 2018-07-09 stsp *len += sizeof(offN);
635 b107e67f 2018-01-19 stsp if (i == 0)
636 b107e67f 2018-01-19 stsp o = (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
640 cecc778e 2018-01-23 stsp o += (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
643 b107e67f 2018-01-19 stsp } while (offN & GOT_PACK_OBJ_DELTA_OFF_MORE);
645 b107e67f 2018-01-19 stsp *offset = o;
646 6ccb713b 2018-01-19 stsp return NULL;
649 6ccb713b 2018-01-19 stsp static const struct got_error *
650 d7464085 2018-07-09 stsp parse_offset_delta(off_t *base_offset, size_t *len, struct got_pack *pack,
651 d7464085 2018-07-09 stsp off_t offset, int tslen)
653 96f5e8b3 2018-01-23 stsp const struct got_error *err;
654 b107e67f 2018-01-19 stsp int64_t negoffset;
655 b107e67f 2018-01-19 stsp size_t negofflen;
659 d7464085 2018-07-09 stsp err = parse_negative_offset(&negoffset, &negofflen, pack,
660 d7464085 2018-07-09 stsp offset + tslen);
662 b107e67f 2018-01-19 stsp return err;
664 b107e67f 2018-01-19 stsp /* Compute the base object's offset (must be in the same pack file). */
665 96f5e8b3 2018-01-23 stsp *base_offset = (offset - negoffset);
666 96f5e8b3 2018-01-23 stsp if (*base_offset <= 0)
667 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_BAD_PACKFILE);
669 d7464085 2018-07-09 stsp *len = negofflen;
670 96f5e8b3 2018-01-23 stsp return NULL;
673 0e22967e 2018-02-11 stsp static const struct got_error *
674 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *, struct got_packidx *,
675 c8ecd499 2018-09-09 stsp struct got_pack *, off_t, size_t, int, size_t, unsigned int);
677 96f5e8b3 2018-01-23 stsp static const struct got_error *
678 c336f889 2018-07-23 stsp add_delta(struct got_delta_chain *deltas, off_t delta_offset, size_t tslen,
679 c336f889 2018-07-23 stsp int delta_type, size_t delta_size, size_t delta_data_offset,
680 c336f889 2018-07-23 stsp uint8_t *delta_buf, size_t delta_len)
682 bdd2fbb3 2018-02-11 stsp struct got_delta *delta;
684 c336f889 2018-07-23 stsp delta = got_delta_open(delta_offset, tslen, delta_type, delta_size,
685 c336f889 2018-07-23 stsp delta_data_offset, delta_buf,
686 a53d2f13 2018-03-17 stsp delta_len);
687 bdd2fbb3 2018-02-11 stsp if (delta == NULL)
688 0a585a0d 2018-03-17 stsp return got_error_from_errno();
689 bdd2fbb3 2018-02-11 stsp /* delta is freed in got_object_close() */
690 bdd2fbb3 2018-02-11 stsp deltas->nentries++;
691 bdd2fbb3 2018-02-11 stsp SIMPLEQ_INSERT_HEAD(&deltas->entries, delta, entry);
692 bdd2fbb3 2018-02-11 stsp return NULL;
695 bdd2fbb3 2018-02-11 stsp static const struct got_error *
696 6b9c9673 2018-01-23 stsp resolve_offset_delta(struct got_delta_chain *deltas,
697 c8ecd499 2018-09-09 stsp struct got_packidx *packidx, struct got_pack *pack, off_t delta_offset,
698 c8ecd499 2018-09-09 stsp size_t tslen, int delta_type, size_t delta_size, unsigned int recursion)
701 a3500804 2018-01-23 stsp const struct got_error *err;
702 c3703302 2018-01-23 stsp off_t base_offset;
703 c3703302 2018-01-23 stsp uint8_t base_type;
704 c3703302 2018-01-23 stsp uint64_t base_size;
705 c3703302 2018-01-23 stsp size_t base_tslen;
706 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
707 a53d2f13 2018-03-17 stsp uint8_t *delta_buf;
708 d7464085 2018-07-09 stsp size_t delta_len, consumed;
710 d7464085 2018-07-09 stsp err = parse_offset_delta(&base_offset, &consumed, pack,
711 d7464085 2018-07-09 stsp delta_offset, tslen);
713 a3500804 2018-01-23 stsp return err;
715 d7464085 2018-07-09 stsp delta_data_offset = delta_offset + tslen + consumed;
716 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
717 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
719 d7464085 2018-07-09 stsp if (pack->map == NULL) {
720 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
721 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
722 d7464085 2018-07-09 stsp return got_error_from_errno();
725 d7464085 2018-07-09 stsp if (pack->map) {
726 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
727 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
728 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
730 d7464085 2018-07-09 stsp return err;
733 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
735 d7464085 2018-07-09 stsp return err;
738 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
739 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
743 c3703302 2018-01-23 stsp /* An offset delta must be in the same packfile. */
744 ab3ad429 2018-07-23 stsp if (base_offset >= pack->filesize) {
745 ab3ad429 2018-07-23 stsp err = got_error(GOT_ERR_PACK_OFFSET);
749 348f621c 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
750 d7464085 2018-07-09 stsp pack, base_offset);
754 c8ecd499 2018-09-09 stsp err = resolve_delta_chain(deltas, packidx, pack, base_offset,
755 b0e2201a 2018-06-22 stsp base_tslen, base_type, base_size, recursion - 1);
758 ab3ad429 2018-07-23 stsp free(delta_buf);
759 ab3ad429 2018-07-23 stsp return err;
762 c3703302 2018-01-23 stsp static const struct got_error *
763 c8ecd499 2018-09-09 stsp resolve_ref_delta(struct got_delta_chain *deltas, struct got_packidx *packidx,
764 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
765 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
767 6b9c9673 2018-01-23 stsp const struct got_error *err;
768 6b9c9673 2018-01-23 stsp struct got_object_id id;
770 6b9c9673 2018-01-23 stsp off_t base_offset;
771 6b9c9673 2018-01-23 stsp uint8_t base_type;
772 6b9c9673 2018-01-23 stsp uint64_t base_size;
773 6b9c9673 2018-01-23 stsp size_t base_tslen;
774 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
775 3efa19e7 2018-07-13 stsp uint8_t *delta_buf = NULL;
776 a53d2f13 2018-03-17 stsp size_t delta_len;
778 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
779 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
780 45202a8f 2018-07-11 stsp delta_data_offset = delta_offset + tslen;
781 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
782 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
784 d7464085 2018-07-09 stsp if (pack->map == NULL) {
785 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
786 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
787 d7464085 2018-07-09 stsp return got_error_from_errno();
791 d7464085 2018-07-09 stsp if (pack->map) {
792 45202a8f 2018-07-11 stsp size_t mapoff = (size_t)delta_data_offset;
793 d7464085 2018-07-09 stsp memcpy(&id, pack->map + mapoff, sizeof(id));
794 d7464085 2018-07-09 stsp mapoff += sizeof(id);
795 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
796 45202a8f 2018-07-11 stsp mapoff, pack->filesize - mapoff);
800 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &id, sizeof(id));
802 d7464085 2018-07-09 stsp return got_error_from_errno();
803 d7464085 2018-07-09 stsp if (n != sizeof(id))
804 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
805 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
810 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
811 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
815 652b2703 2018-06-22 stsp /* Delta base must be in the same pack file. */
816 1510f469 2018-09-09 stsp idx = got_packidx_get_object_idx(packidx, &id);
817 3efa19e7 2018-07-13 stsp if (idx == -1) {
818 3efa19e7 2018-07-13 stsp err = got_error(GOT_ERR_BAD_PACKFILE);
822 6b9c9673 2018-01-23 stsp base_offset = get_object_offset(packidx, idx);
823 6b9c9673 2018-01-23 stsp if (base_offset == (uint64_t)-1) {
824 3efa19e7 2018-07-13 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
828 b0e2201a 2018-06-22 stsp if (base_offset >= pack->filesize) {
829 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
833 6b9c9673 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
834 d7464085 2018-07-09 stsp pack, base_offset);
838 c8ecd499 2018-09-09 stsp err = resolve_delta_chain(deltas, packidx, pack, base_offset,
839 0c048b15 2018-04-27 stsp base_tslen, base_type, base_size, recursion - 1);
842 3efa19e7 2018-07-13 stsp free(delta_buf);
843 6b9c9673 2018-01-23 stsp return err;
846 6b9c9673 2018-01-23 stsp static const struct got_error *
847 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *deltas, struct got_packidx *packidx,
848 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
849 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
851 c3703302 2018-01-23 stsp const struct got_error *err = NULL;
853 5b7e13a7 2018-04-02 stsp if (--recursion == 0)
854 5b7e13a7 2018-04-02 stsp return got_error(GOT_ERR_RECURSION);
856 c3703302 2018-01-23 stsp switch (delta_type) {
857 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_COMMIT:
858 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TREE:
859 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_BLOB:
860 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TAG:
861 c3703302 2018-01-23 stsp /* Plain types are the final delta base. Recursion ends. */
862 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type,
863 c336f889 2018-07-23 stsp delta_size, 0, NULL, 0);
865 a3500804 2018-01-23 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
866 c8ecd499 2018-09-09 stsp err = resolve_offset_delta(deltas, packidx, pack,
867 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
869 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_REF_DELTA:
870 c8ecd499 2018-09-09 stsp err = resolve_ref_delta(deltas, packidx, pack,
871 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
874 4810de4a 2018-04-01 stsp return got_error(GOT_ERR_OBJ_TYPE);
877 96f5e8b3 2018-01-23 stsp return err;
880 96f5e8b3 2018-01-23 stsp static const struct got_error *
881 a98c62b1 2018-09-09 stsp open_delta_object(struct got_object **obj, struct got_packidx *packidx,
882 a98c62b1 2018-09-09 stsp struct got_pack *pack, struct got_object_id *id, off_t offset,
883 c59b3346 2018-09-11 stsp size_t tslen, int delta_type, size_t delta_size, int idx)
885 96f5e8b3 2018-01-23 stsp const struct got_error *err = NULL;
886 96f5e8b3 2018-01-23 stsp int resolved_type;
888 b107e67f 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
889 b107e67f 2018-01-19 stsp if (*obj == NULL)
890 0a585a0d 2018-03-17 stsp return got_error_from_errno();
892 96f5e8b3 2018-01-23 stsp (*obj)->flags = 0;
893 b107e67f 2018-01-19 stsp (*obj)->hdrlen = 0;
894 39e73dc9 2018-03-03 stsp (*obj)->size = 0; /* Not known because deltas aren't applied yet. */
895 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
896 cecc778e 2018-01-23 stsp (*obj)->pack_offset = offset + tslen;
898 b0e2201a 2018-06-22 stsp (*obj)->path_packfile = strdup(pack->path_packfile);
899 96f5e8b3 2018-01-23 stsp if ((*obj)->path_packfile == NULL) {
900 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
903 96f5e8b3 2018-01-23 stsp (*obj)->flags |= GOT_OBJ_FLAG_PACKED;
904 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
906 96f5e8b3 2018-01-23 stsp SIMPLEQ_INIT(&(*obj)->deltas.entries);
907 96f5e8b3 2018-01-23 stsp (*obj)->flags |= GOT_OBJ_FLAG_DELTIFIED;
909 c8ecd499 2018-09-09 stsp err = resolve_delta_chain(&(*obj)->deltas, packidx, pack, offset,
910 b0e2201a 2018-06-22 stsp tslen, delta_type, delta_size, GOT_DELTA_CHAIN_RECURSION_MAX);
914 96f5e8b3 2018-01-23 stsp err = got_delta_chain_get_base_type(&resolved_type, &(*obj)->deltas);
917 96f5e8b3 2018-01-23 stsp (*obj)->type = resolved_type;
920 96f5e8b3 2018-01-23 stsp got_object_close(*obj);
921 96f5e8b3 2018-01-23 stsp *obj = NULL;
923 96f5e8b3 2018-01-23 stsp return err;
926 2090a03d 2018-09-09 stsp const struct got_error *
927 2090a03d 2018-09-09 stsp got_packfile_open_object(struct got_object **obj, struct got_pack *pack,
928 6fd11751 2018-06-04 stsp struct got_packidx *packidx, int idx, struct got_object_id *id)
930 a1fd68d8 2018-01-12 stsp const struct got_error *err = NULL;
931 a1fd68d8 2018-01-12 stsp off_t offset;
932 6c00b545 2018-01-17 stsp uint8_t type;
933 6c00b545 2018-01-17 stsp uint64_t size;
934 3ee5fc21 2018-01-17 stsp size_t tslen;
936 6c00b545 2018-01-17 stsp *obj = NULL;
938 a1fd68d8 2018-01-12 stsp offset = get_object_offset(packidx, idx);
939 a1fd68d8 2018-01-12 stsp if (offset == (uint64_t)-1)
940 a1fd68d8 2018-01-12 stsp return got_error(GOT_ERR_BAD_PACKIDX);
942 d7464085 2018-07-09 stsp err = parse_object_type_and_size(&type, &size, &tslen, pack, offset);
944 35c73765 2018-09-09 stsp return err;
946 6c00b545 2018-01-17 stsp switch (type) {
947 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_COMMIT:
948 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_TREE:
949 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_BLOB:
950 d33fc9ef 2018-01-23 stsp case GOT_OBJ_TYPE_TAG:
951 35c73765 2018-09-09 stsp err = open_plain_object(obj, pack->path_packfile, id, type,
952 c59b3346 2018-09-11 stsp offset + tslen, size, idx);
954 b107e67f 2018-01-19 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
955 a48db7e5 2018-01-23 stsp case GOT_OBJ_TYPE_REF_DELTA:
956 a98c62b1 2018-09-09 stsp err = open_delta_object(obj, packidx, pack, id, offset,
957 c59b3346 2018-09-11 stsp tslen, type, size, idx);
960 4810de4a 2018-04-01 stsp err = got_error(GOT_ERR_OBJ_TYPE);
964 3ee5fc21 2018-01-17 stsp return err;
967 efd2a263 2018-01-19 stsp static const struct got_error *
968 40426839 2018-03-17 stsp get_delta_chain_max_size(uint64_t *max_size, struct got_delta_chain *deltas)
970 22484865 2018-03-13 stsp struct got_delta *delta;
971 22484865 2018-03-13 stsp uint64_t base_size = 0, result_size = 0;
973 22484865 2018-03-13 stsp *max_size = 0;
974 22484865 2018-03-13 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
975 22484865 2018-03-13 stsp /* Plain object types are the delta base. */
976 22484865 2018-03-13 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
977 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TREE &&
978 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
979 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TAG) {
980 22484865 2018-03-13 stsp const struct got_error *err;
981 a53d2f13 2018-03-17 stsp err = got_delta_get_sizes(&base_size, &result_size,
982 a53d2f13 2018-03-17 stsp delta->delta_buf, delta->delta_len);
984 22484865 2018-03-13 stsp return err;
986 22484865 2018-03-13 stsp base_size = delta->size;
987 22484865 2018-03-13 stsp if (base_size > *max_size)
988 22484865 2018-03-13 stsp *max_size = base_size;
989 22484865 2018-03-13 stsp if (result_size > *max_size)
990 22484865 2018-03-13 stsp *max_size = result_size;
993 9feb4ff2 2018-03-14 stsp return NULL;
996 ac544f8c 2019-01-13 stsp const struct got_error *
997 85a703fa 2019-01-13 stsp got_pack_get_max_delta_object_size(uint64_t *size, struct got_object *obj)
999 85a703fa 2019-01-13 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0)
1000 85a703fa 2019-01-13 stsp return got_error(GOT_ERR_OBJ_TYPE);
1002 ac544f8c 2019-01-13 stsp return get_delta_chain_max_size(size, &obj->deltas);
1005 22484865 2018-03-13 stsp static const struct got_error *
1006 b29656e2 2018-03-16 stsp dump_delta_chain_to_file(size_t *result_size, struct got_delta_chain *deltas,
1007 3840f4c9 2018-09-12 stsp struct got_pack *pack, FILE *outfile, FILE *base_file, FILE *accum_file)
1009 efd2a263 2018-01-19 stsp const struct got_error *err = NULL;
1010 6691714a 2018-01-23 stsp struct got_delta *delta;
1011 8628c62d 2018-03-15 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1012 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1013 22484865 2018-03-13 stsp uint64_t max_size;
1014 6691714a 2018-01-23 stsp int n = 0;
1016 b29656e2 2018-03-16 stsp *result_size = 0;
1018 710bb5ca 2018-01-23 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1019 6691714a 2018-01-23 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1021 8628c62d 2018-03-15 stsp /* We process small enough files entirely in memory for speed. */
1022 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1024 22484865 2018-03-13 stsp return err;
1025 8628c62d 2018-03-15 stsp if (max_size < GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
1026 8628c62d 2018-03-15 stsp accum_buf = malloc(max_size);
1027 8628c62d 2018-03-15 stsp if (accum_buf == NULL)
1028 8628c62d 2018-03-15 stsp return got_error_from_errno();
1029 3840f4c9 2018-09-12 stsp base_file = NULL;
1030 3840f4c9 2018-09-12 stsp accum_file = NULL;
1033 6691714a 2018-01-23 stsp /* Deltas are ordered in ascending order. */
1034 710bb5ca 2018-01-23 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1035 a6b158cc 2018-02-11 stsp if (n == 0) {
1036 34fca9c3 2018-11-11 stsp size_t mapoff;
1037 0c048b15 2018-04-27 stsp off_t delta_data_offset;
1039 a6b158cc 2018-02-11 stsp /* Plain object types are the delta base. */
1040 a6b158cc 2018-02-11 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1041 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1042 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1043 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1044 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1045 72eb3431 2018-04-01 stsp goto done;
1048 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1049 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1050 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1051 0c048b15 2018-04-27 stsp goto done;
1053 d7464085 2018-07-09 stsp if (pack->map == NULL) {
1054 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1056 d7464085 2018-07-09 stsp err = got_error_from_errno();
1057 d7464085 2018-07-09 stsp goto done;
1060 d7464085 2018-07-09 stsp if (base_file) {
1061 d7464085 2018-07-09 stsp if (pack->map) {
1062 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1063 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(
1064 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1065 d7464085 2018-07-09 stsp pack->filesize - mapoff, base_file);
1067 34fca9c3 2018-11-11 stsp err = got_inflate_to_file_fd(
1068 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd, base_file);
1070 d7464085 2018-07-09 stsp if (pack->map) {
1071 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1072 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1073 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1074 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1076 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1077 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1080 a6b158cc 2018-02-11 stsp goto done;
1082 8628c62d 2018-03-15 stsp if (base_file)
1083 8628c62d 2018-03-15 stsp rewind(base_file);
1087 8628c62d 2018-03-15 stsp if (base_buf) {
1088 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1089 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1090 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1093 a53d2f13 2018-03-17 stsp err = got_delta_apply(base_file, delta->delta_buf,
1094 a53d2f13 2018-03-17 stsp delta->delta_len,
1095 8628c62d 2018-03-15 stsp /* Final delta application writes to output file. */
1096 b29656e2 2018-03-16 stsp ++n < deltas->nentries ? accum_file : outfile,
1097 b29656e2 2018-03-16 stsp &accum_size);
1100 6691714a 2018-01-23 stsp goto done;
1102 710bb5ca 2018-01-23 stsp if (n < deltas->nentries) {
1103 6691714a 2018-01-23 stsp /* Accumulated delta becomes the new base. */
1104 8628c62d 2018-03-15 stsp if (base_buf) {
1105 8628c62d 2018-03-15 stsp uint8_t *tmp = accum_buf;
1107 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation
1108 34fca9c3 2018-11-11 stsp * buffer. Ensure it can hold the largest
1109 34fca9c3 2018-11-11 stsp * result in the delta chain. The initial
1110 34fca9c3 2018-11-11 stsp * allocation might have been smaller.
1112 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1113 34fca9c3 2018-11-11 stsp uint8_t *p;
1114 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1115 34fca9c3 2018-11-11 stsp if (p == NULL) {
1116 34fca9c3 2018-11-11 stsp err = got_error_from_errno();
1117 34fca9c3 2018-11-11 stsp goto done;
1119 34fca9c3 2018-11-11 stsp base_buf = p;
1120 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1122 8628c62d 2018-03-15 stsp accum_buf = base_buf;
1123 8628c62d 2018-03-15 stsp base_buf = tmp;
1125 8628c62d 2018-03-15 stsp FILE *tmp = accum_file;
1126 8628c62d 2018-03-15 stsp accum_file = base_file;
1127 8628c62d 2018-03-15 stsp base_file = tmp;
1128 8628c62d 2018-03-15 stsp rewind(base_file);
1129 8628c62d 2018-03-15 stsp rewind(accum_file);
1135 8628c62d 2018-03-15 stsp free(base_buf);
1136 8628c62d 2018-03-15 stsp if (accum_buf) {
1137 8628c62d 2018-03-15 stsp size_t len = fwrite(accum_buf, 1, accum_size, outfile);
1138 8628c62d 2018-03-15 stsp free(accum_buf);
1139 8628c62d 2018-03-15 stsp if (len != accum_size)
1140 673702af 2018-07-23 stsp err = got_ferror(outfile, GOT_ERR_IO);
1142 6691714a 2018-01-23 stsp rewind(outfile);
1143 b29656e2 2018-03-16 stsp if (err == NULL)
1144 b29656e2 2018-03-16 stsp *result_size = accum_size;
1145 e0ab43e7 2018-03-16 stsp return err;
1148 e0ab43e7 2018-03-16 stsp static const struct got_error *
1149 e0ab43e7 2018-03-16 stsp dump_delta_chain_to_mem(uint8_t **outbuf, size_t *outlen,
1150 48095039 2018-09-09 stsp struct got_delta_chain *deltas, struct got_pack *pack)
1152 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1153 e0ab43e7 2018-03-16 stsp struct got_delta *delta;
1154 e0ab43e7 2018-03-16 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1155 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1156 e0ab43e7 2018-03-16 stsp uint64_t max_size;
1157 e0ab43e7 2018-03-16 stsp int n = 0;
1159 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1160 e0ab43e7 2018-03-16 stsp *outlen = 0;
1162 e0ab43e7 2018-03-16 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1163 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1165 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1167 e0ab43e7 2018-03-16 stsp return err;
1168 e0ab43e7 2018-03-16 stsp accum_buf = malloc(max_size);
1169 e0ab43e7 2018-03-16 stsp if (accum_buf == NULL)
1170 0a585a0d 2018-03-17 stsp return got_error_from_errno();
1172 e0ab43e7 2018-03-16 stsp /* Deltas are ordered in ascending order. */
1173 e0ab43e7 2018-03-16 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1174 e0ab43e7 2018-03-16 stsp if (n == 0) {
1175 0c048b15 2018-04-27 stsp size_t delta_data_offset;
1177 e0ab43e7 2018-03-16 stsp /* Plain object types are the delta base. */
1178 e0ab43e7 2018-03-16 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1179 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1180 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1181 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1182 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1183 72eb3431 2018-04-01 stsp goto done;
1186 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1187 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1188 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1189 0c048b15 2018-04-27 stsp goto done;
1191 d7464085 2018-07-09 stsp if (pack->map) {
1192 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
1193 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1194 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1195 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1197 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1199 d7464085 2018-07-09 stsp err = got_error_from_errno();
1200 d7464085 2018-07-09 stsp goto done;
1202 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1203 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1206 d7464085 2018-07-09 stsp goto done;
1211 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1212 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1213 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1216 e0ab43e7 2018-03-16 stsp goto done;
1218 e0ab43e7 2018-03-16 stsp if (n < deltas->nentries) {
1219 e0ab43e7 2018-03-16 stsp /* Accumulated delta becomes the new base. */
1220 e0ab43e7 2018-03-16 stsp uint8_t *tmp = accum_buf;
1222 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation buffer.
1223 34fca9c3 2018-11-11 stsp * Ensure it can hold the largest result in the delta
1224 34fca9c3 2018-11-11 stsp * chain. Initial allocation might have been smaller.
1226 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1227 34fca9c3 2018-11-11 stsp uint8_t *p;
1228 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1229 34fca9c3 2018-11-11 stsp if (p == NULL) {
1230 34fca9c3 2018-11-11 stsp err = got_error_from_errno();
1231 34fca9c3 2018-11-11 stsp goto done;
1233 34fca9c3 2018-11-11 stsp base_buf = p;
1234 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1236 e0ab43e7 2018-03-16 stsp accum_buf = base_buf;
1237 e0ab43e7 2018-03-16 stsp base_buf = tmp;
1242 e0ab43e7 2018-03-16 stsp free(base_buf);
1243 e0ab43e7 2018-03-16 stsp if (err) {
1244 e0ab43e7 2018-03-16 stsp free(accum_buf);
1245 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1246 e0ab43e7 2018-03-16 stsp *outlen = 0;
1248 e0ab43e7 2018-03-16 stsp *outbuf = accum_buf;
1249 e0ab43e7 2018-03-16 stsp *outlen = accum_size;
1251 efd2a263 2018-01-19 stsp return err;
1254 3ee5fc21 2018-01-17 stsp const struct got_error *
1255 24140570 2018-09-09 stsp got_packfile_extract_object(struct got_pack *pack, struct got_object *obj,
1256 3840f4c9 2018-09-12 stsp FILE *outfile, FILE *base_file, FILE *accum_file)
1258 3ee5fc21 2018-01-17 stsp const struct got_error *err = NULL;
1260 3ee5fc21 2018-01-17 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1261 3ee5fc21 2018-01-17 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1263 ef2bccd9 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1264 24140570 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1265 24140570 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1267 d7464085 2018-07-09 stsp if (pack->map) {
1268 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1269 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(&obj->size, pack->map,
1270 24140570 2018-09-09 stsp mapoff, pack->filesize - mapoff, outfile);
1272 24140570 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1273 24140570 2018-09-09 stsp return got_error_from_errno();
1274 24140570 2018-09-09 stsp err = got_inflate_to_file_fd(&obj->size, pack->fd,
1278 2ce68b2f 2018-09-09 stsp err = dump_delta_chain_to_file(&obj->size, &obj->deltas, pack,
1279 3840f4c9 2018-09-12 stsp outfile, base_file, accum_file);
1281 a1fd68d8 2018-01-12 stsp return err;
1284 e0ab43e7 2018-03-16 stsp const struct got_error *
1285 e0ab43e7 2018-03-16 stsp got_packfile_extract_object_to_mem(uint8_t **buf, size_t *len,
1286 7e212e3d 2018-09-09 stsp struct got_object *obj, struct got_pack *pack)
1288 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1290 e0ab43e7 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1291 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1293 48095039 2018-09-09 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1294 7e212e3d 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1295 7e212e3d 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1296 d7464085 2018-07-09 stsp if (pack->map) {
1297 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1298 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(buf, len, pack->map,
1299 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
1301 7e212e3d 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1302 7e212e3d 2018-09-09 stsp return got_error_from_errno();
1303 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(buf, len, pack->fd);
1306 48095039 2018-09-09 stsp err = dump_delta_chain_to_mem(buf, len, &obj->deltas, pack);
1308 e0ab43e7 2018-03-16 stsp return err;
