2 86c3caaf 2018-03-09 stsp * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4 86c3caaf 2018-03-09 stsp * Permission to use, copy, modify, and distribute this software for any
5 86c3caaf 2018-03-09 stsp * purpose with or without fee is hereby granted, provided that the above
6 86c3caaf 2018-03-09 stsp * copyright notice and this permission notice appear in all copies.
8 86c3caaf 2018-03-09 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 86c3caaf 2018-03-09 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 86c3caaf 2018-03-09 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 86c3caaf 2018-03-09 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 86c3caaf 2018-03-09 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 86c3caaf 2018-03-09 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 86c3caaf 2018-03-09 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 86c3caaf 2018-03-09 stsp #include <sys/stat.h>
18 6d9d28c3 2018-03-11 stsp #include <sys/limits.h>
19 9d31a1d8 2018-03-11 stsp #include <sys/queue.h>
21 86c3caaf 2018-03-09 stsp #include <string.h>
22 86c3caaf 2018-03-09 stsp #include <stdio.h>
23 86c3caaf 2018-03-09 stsp #include <stdlib.h>
24 86c3caaf 2018-03-09 stsp #include <fcntl.h>
25 86c3caaf 2018-03-09 stsp #include <errno.h>
26 86c3caaf 2018-03-09 stsp #include <unistd.h>
27 9d31a1d8 2018-03-11 stsp #include <sha1.h>
28 9d31a1d8 2018-03-11 stsp #include <zlib.h>
29 9d31a1d8 2018-03-11 stsp #include <fnmatch.h>
31 86c3caaf 2018-03-09 stsp #include "got_error.h"
32 86c3caaf 2018-03-09 stsp #include "got_repository.h"
33 5261c201 2018-04-01 stsp #include "got_reference.h"
34 9d31a1d8 2018-03-11 stsp #include "got_object.h"
35 86c3caaf 2018-03-09 stsp #include "got_worktree.h"
36 511a516b 2018-05-19 stsp #include "got_opentemp.h"
38 718b3ab0 2018-03-17 stsp #include "got_lib_worktree.h"
39 718b3ab0 2018-03-17 stsp #include "got_lib_path.h"
40 718b3ab0 2018-03-17 stsp #include "got_lib_sha1.h"
41 718b3ab0 2018-03-17 stsp #include "got_lib_fileindex.h"
42 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
43 718b3ab0 2018-03-17 stsp #include "got_lib_delta.h"
44 718b3ab0 2018-03-17 stsp #include "got_lib_object.h"
47 9d31a1d8 2018-03-11 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
50 99724ed4 2018-03-10 stsp static const struct got_error *
51 7ac97322 2018-03-11 stsp create_meta_file(const char *path_got, const char *name, const char *content)
53 99724ed4 2018-03-10 stsp const struct got_error *err = NULL;
55 99724ed4 2018-03-10 stsp int fd = -1;
57 7ac97322 2018-03-11 stsp if (asprintf(&path, "%s/%s", path_got, name) == -1) {
58 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
59 99724ed4 2018-03-10 stsp path = NULL;
63 73a5ef67 2018-03-11 stsp fd = open(path, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW,
64 99724ed4 2018-03-10 stsp GOT_DEFAULT_FILE_MODE);
65 99724ed4 2018-03-10 stsp if (fd == -1) {
66 99724ed4 2018-03-10 stsp err = got_error_from_errno();
70 99724ed4 2018-03-10 stsp if (content) {
71 99724ed4 2018-03-10 stsp int len = dprintf(fd, "%s\n", content);
72 99724ed4 2018-03-10 stsp if (len != strlen(content) + 1) {
73 99724ed4 2018-03-10 stsp err = got_error_from_errno();
79 99724ed4 2018-03-10 stsp if (fd != -1 && close(fd) == -1 && err == NULL)
80 99724ed4 2018-03-10 stsp err = got_error_from_errno();
85 507dc3bb 2018-12-29 stsp static const struct got_error *
86 507dc3bb 2018-12-29 stsp update_meta_file(const char *path_got, const char *name, const char *content)
88 507dc3bb 2018-12-29 stsp const struct got_error *err = NULL;
89 507dc3bb 2018-12-29 stsp FILE *tmpfile = NULL;
90 507dc3bb 2018-12-29 stsp char *tmppath = NULL;
91 507dc3bb 2018-12-29 stsp char *path = NULL;
93 507dc3bb 2018-12-29 stsp if (asprintf(&path, "%s/%s", path_got, name) == -1) {
94 507dc3bb 2018-12-29 stsp err = got_error_from_errno();
95 507dc3bb 2018-12-29 stsp path = NULL;
99 507dc3bb 2018-12-29 stsp err = got_opentemp_named(&tmppath, &tmpfile, path);
103 507dc3bb 2018-12-29 stsp if (content) {
104 507dc3bb 2018-12-29 stsp int len = fprintf(tmpfile, "%s\n", content);
105 507dc3bb 2018-12-29 stsp if (len != strlen(content) + 1) {
106 507dc3bb 2018-12-29 stsp err = got_error_from_errno();
111 507dc3bb 2018-12-29 stsp if (rename(tmppath, path) != 0) {
112 507dc3bb 2018-12-29 stsp err = got_error_from_errno();
117 507dc3bb 2018-12-29 stsp free(tmppath);
118 507dc3bb 2018-12-29 stsp fclose(tmpfile);
119 99724ed4 2018-03-10 stsp return err;
122 09fe317a 2018-03-11 stsp static const struct got_error *
123 7ac97322 2018-03-11 stsp read_meta_file(char **content, const char *path_got, const char *name)
125 09fe317a 2018-03-11 stsp const struct got_error *err = NULL;
126 09fe317a 2018-03-11 stsp char *path;
127 09fe317a 2018-03-11 stsp int fd = -1;
129 09fe317a 2018-03-11 stsp struct stat sb;
131 09fe317a 2018-03-11 stsp *content = NULL;
133 7ac97322 2018-03-11 stsp if (asprintf(&path, "%s/%s", path_got, name) == -1) {
134 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
135 09fe317a 2018-03-11 stsp path = NULL;
139 ef99fdb1 2018-03-11 stsp fd = open(path, O_RDONLY | O_NOFOLLOW);
140 09fe317a 2018-03-11 stsp if (fd == -1) {
141 ef99fdb1 2018-03-11 stsp err = got_error_from_errno();
144 ef99fdb1 2018-03-11 stsp if (flock(fd, LOCK_SH | LOCK_NB) == -1) {
145 73a5ef67 2018-03-11 stsp err = (errno == EWOULDBLOCK ? got_error(GOT_ERR_WORKTREE_BUSY)
146 73a5ef67 2018-03-11 stsp : got_error_from_errno());
150 09fe317a 2018-03-11 stsp stat(path, &sb);
151 09fe317a 2018-03-11 stsp *content = calloc(1, sb.st_size);
152 09fe317a 2018-03-11 stsp if (*content == NULL) {
153 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
157 09fe317a 2018-03-11 stsp n = read(fd, *content, sb.st_size);
158 09fe317a 2018-03-11 stsp if (n != sb.st_size) {
159 0605801d 2018-03-11 stsp err = (n == -1 ? got_error_from_errno() :
160 0605801d 2018-03-11 stsp got_error(GOT_ERR_WORKTREE_META));
163 09fe317a 2018-03-11 stsp if ((*content)[sb.st_size - 1] != '\n') {
164 09fe317a 2018-03-11 stsp err = got_error(GOT_ERR_WORKTREE_META);
167 09fe317a 2018-03-11 stsp (*content)[sb.st_size - 1] = '\0';
170 09fe317a 2018-03-11 stsp if (fd != -1 && close(fd) == -1 && err == NULL)
171 09fe317a 2018-03-11 stsp err = got_error_from_errno();
172 09fe317a 2018-03-11 stsp free(path);
174 09fe317a 2018-03-11 stsp free(*content);
175 09fe317a 2018-03-11 stsp *content = NULL;
177 09fe317a 2018-03-11 stsp return err;
180 86c3caaf 2018-03-09 stsp const struct got_error *
181 86c3caaf 2018-03-09 stsp got_worktree_init(const char *path, struct got_reference *head_ref,
182 577ec78f 2018-03-11 stsp const char *prefix, struct got_repository *repo)
184 86c3caaf 2018-03-09 stsp const struct got_error *err = NULL;
185 65596e15 2018-12-24 stsp struct got_object_id *commit_id = NULL;
186 65596e15 2018-12-24 stsp int obj_type;
187 7ac97322 2018-03-11 stsp char *path_got = NULL;
188 08d425ea 2018-12-24 stsp char *refstr = NULL;
189 cde76477 2018-03-11 stsp char *repo_path = NULL;
190 1451e70d 2018-03-10 stsp char *formatstr = NULL;
191 0bb8a95e 2018-03-12 stsp char *absprefix = NULL;
192 65596e15 2018-12-24 stsp char *basestr = NULL;
194 65596e15 2018-12-24 stsp err = got_ref_resolve(&commit_id, repo, head_ref);
196 65596e15 2018-12-24 stsp return err;
197 65596e15 2018-12-24 stsp err = got_object_get_type(&obj_type, repo, commit_id);
199 65596e15 2018-12-24 stsp return err;
200 65596e15 2018-12-24 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
201 65596e15 2018-12-24 stsp return got_error(GOT_ERR_OBJ_TYPE);
203 0bb8a95e 2018-03-12 stsp if (!got_path_is_absolute(prefix)) {
204 0bb8a95e 2018-03-12 stsp if (asprintf(&absprefix, "/%s", prefix) == -1)
205 0a585a0d 2018-03-17 stsp return got_error_from_errno();
208 86c3caaf 2018-03-09 stsp /* Create top-level directory (may already exist). */
209 2cb4bacb 2018-03-11 stsp if (mkdir(path, GOT_DEFAULT_DIR_MODE) == -1 && errno != EEXIST) {
210 86c3caaf 2018-03-09 stsp err = got_error_from_errno();
214 86c3caaf 2018-03-09 stsp /* Create .got directory (may already exist). */
215 7ac97322 2018-03-11 stsp if (asprintf(&path_got, "%s/%s", path, GOT_WORKTREE_GOT_DIR) == -1) {
216 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
219 7ac97322 2018-03-11 stsp if (mkdir(path_got, GOT_DEFAULT_DIR_MODE) == -1 && errno != EEXIST) {
220 86c3caaf 2018-03-09 stsp err = got_error_from_errno();
224 056e7441 2018-03-11 stsp /* Create an empty lock file. */
225 7ac97322 2018-03-11 stsp err = create_meta_file(path_got, GOT_WORKTREE_LOCK, NULL);
229 86c3caaf 2018-03-09 stsp /* Create an empty file index. */
230 7ac97322 2018-03-11 stsp err = create_meta_file(path_got, GOT_WORKTREE_FILE_INDEX, NULL);
234 08d425ea 2018-12-24 stsp /* Write the HEAD reference. */
235 08d425ea 2018-12-24 stsp refstr = got_ref_to_str(head_ref);
236 08d425ea 2018-12-24 stsp if (refstr == NULL) {
237 a1a7858a 2018-12-24 stsp err = got_error_from_errno();
240 0f92850e 2018-12-25 stsp err = create_meta_file(path_got, GOT_WORKTREE_HEAD_REF, refstr);
244 65596e15 2018-12-24 stsp /* Record our base commit. */
245 65596e15 2018-12-24 stsp err = got_object_id_str(&basestr, commit_id);
248 0f92850e 2018-12-25 stsp err = create_meta_file(path_got, GOT_WORKTREE_BASE_COMMIT, basestr);
252 1451e70d 2018-03-10 stsp /* Store path to repository. */
253 cde76477 2018-03-11 stsp repo_path = got_repo_get_path(repo);
254 cde76477 2018-03-11 stsp if (repo_path == NULL) {
255 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
258 cde76477 2018-03-11 stsp err = create_meta_file(path_got, GOT_WORKTREE_REPOSITORY, repo_path);
262 577ec78f 2018-03-11 stsp /* Store in-repository path prefix. */
263 0bb8a95e 2018-03-12 stsp err = create_meta_file(path_got, GOT_WORKTREE_PATH_PREFIX,
264 0bb8a95e 2018-03-12 stsp absprefix ? absprefix : prefix);
268 9dce68ed 2018-03-10 stsp /* Stamp work tree with format file. */
269 1451e70d 2018-03-10 stsp if (asprintf(&formatstr, "%d", GOT_WORKTREE_FORMAT_VERSION) == -1) {
270 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
273 7ac97322 2018-03-11 stsp err = create_meta_file(path_got, GOT_WORKTREE_FORMAT, formatstr);
278 65596e15 2018-12-24 stsp free(commit_id);
279 7ac97322 2018-03-11 stsp free(path_got);
280 1451e70d 2018-03-10 stsp free(formatstr);
281 08d425ea 2018-12-24 stsp free(refstr);
282 cde76477 2018-03-11 stsp free(repo_path);
283 0bb8a95e 2018-03-12 stsp free(absprefix);
284 65596e15 2018-12-24 stsp free(basestr);
285 86c3caaf 2018-03-09 stsp return err;
288 86c3caaf 2018-03-09 stsp const struct got_error *
289 86c3caaf 2018-03-09 stsp got_worktree_open(struct got_worktree **worktree, const char *path)
291 6d9d28c3 2018-03-11 stsp const struct got_error *err = NULL;
292 7ac97322 2018-03-11 stsp char *path_got;
293 6d9d28c3 2018-03-11 stsp char *formatstr = NULL;
294 056e7441 2018-03-11 stsp char *path_lock = NULL;
295 eaccb85f 2018-12-25 stsp char *base_commit_id_str = NULL;
296 271d2a38 2018-12-25 stsp char *head_ref_str = NULL;
297 6d9d28c3 2018-03-11 stsp int version, fd = -1;
298 6d9d28c3 2018-03-11 stsp const char *errstr;
299 eaccb85f 2018-12-25 stsp struct got_repository *repo = NULL;
301 6d9d28c3 2018-03-11 stsp *worktree = NULL;
303 7ac97322 2018-03-11 stsp if (asprintf(&path_got, "%s/%s", path, GOT_WORKTREE_GOT_DIR) == -1) {
304 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
305 7ac97322 2018-03-11 stsp path_got = NULL;
309 7ac97322 2018-03-11 stsp if (asprintf(&path_lock, "%s/%s", path_got, GOT_WORKTREE_LOCK) == -1) {
310 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
311 056e7441 2018-03-11 stsp path_lock = NULL;
315 056e7441 2018-03-11 stsp fd = open(path_lock, O_RDWR | O_EXLOCK | O_NONBLOCK);
316 6d9d28c3 2018-03-11 stsp if (fd == -1) {
317 73a5ef67 2018-03-11 stsp err = (errno == EWOULDBLOCK ? got_error(GOT_ERR_WORKTREE_BUSY)
318 73a5ef67 2018-03-11 stsp : got_error_from_errno());
322 7ac97322 2018-03-11 stsp err = read_meta_file(&formatstr, path_got, GOT_WORKTREE_FORMAT);
326 6d9d28c3 2018-03-11 stsp version = strtonum(formatstr, 1, INT_MAX, &errstr);
327 6d9d28c3 2018-03-11 stsp if (errstr) {
328 6d9d28c3 2018-03-11 stsp err = got_error(GOT_ERR_WORKTREE_META);
331 6d9d28c3 2018-03-11 stsp if (version != GOT_WORKTREE_FORMAT_VERSION) {
332 6d9d28c3 2018-03-11 stsp err = got_error(GOT_ERR_WORKTREE_VERS);
336 6d9d28c3 2018-03-11 stsp *worktree = calloc(1, sizeof(**worktree));
337 6d9d28c3 2018-03-11 stsp if (*worktree == NULL) {
338 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
341 056e7441 2018-03-11 stsp (*worktree)->lockfd = -1;
343 c88eb298 2018-03-11 stsp (*worktree)->root_path = strdup(path);
344 c88eb298 2018-03-11 stsp if ((*worktree)->root_path == NULL) {
345 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
348 cde76477 2018-03-11 stsp err = read_meta_file(&(*worktree)->repo_path, path_got,
349 6d9d28c3 2018-03-11 stsp GOT_WORKTREE_REPOSITORY);
353 7ac97322 2018-03-11 stsp err = read_meta_file(&(*worktree)->path_prefix, path_got,
354 6d9d28c3 2018-03-11 stsp GOT_WORKTREE_PATH_PREFIX);
358 eaccb85f 2018-12-25 stsp err = read_meta_file(&base_commit_id_str, path_got,
359 0f92850e 2018-12-25 stsp GOT_WORKTREE_BASE_COMMIT);
363 eaccb85f 2018-12-25 stsp err = got_repo_open(&repo, (*worktree)->repo_path);
367 eaccb85f 2018-12-25 stsp err = got_object_resolve_id_str(&(*worktree)->base_commit_id, repo,
368 eaccb85f 2018-12-25 stsp base_commit_id_str);
372 271d2a38 2018-12-25 stsp err = read_meta_file(&head_ref_str, path_got, GOT_WORKTREE_HEAD_REF);
376 271d2a38 2018-12-25 stsp err = got_ref_open(&(*worktree)->head_ref, repo, head_ref_str);
379 eaccb85f 2018-12-25 stsp got_repo_close(repo);
380 7ac97322 2018-03-11 stsp free(path_got);
381 056e7441 2018-03-11 stsp free(path_lock);
382 271d2a38 2018-12-25 stsp free(head_ref_str);
383 eaccb85f 2018-12-25 stsp free(base_commit_id_str);
385 6d9d28c3 2018-03-11 stsp if (fd != -1)
387 6d9d28c3 2018-03-11 stsp if (*worktree != NULL)
388 6d9d28c3 2018-03-11 stsp got_worktree_close(*worktree);
389 6d9d28c3 2018-03-11 stsp *worktree = NULL;
391 056e7441 2018-03-11 stsp (*worktree)->lockfd = fd;
393 6d9d28c3 2018-03-11 stsp return err;
397 86c3caaf 2018-03-09 stsp got_worktree_close(struct got_worktree *worktree)
399 c88eb298 2018-03-11 stsp free(worktree->root_path);
400 cde76477 2018-03-11 stsp free(worktree->repo_path);
401 6d9d28c3 2018-03-11 stsp free(worktree->path_prefix);
402 eaccb85f 2018-12-25 stsp free(worktree->base_commit_id);
403 271d2a38 2018-12-25 stsp if (worktree->head_ref)
404 271d2a38 2018-12-25 stsp got_ref_close(worktree->head_ref);
405 056e7441 2018-03-11 stsp if (worktree->lockfd != -1)
406 056e7441 2018-03-11 stsp close(worktree->lockfd);
407 6d9d28c3 2018-03-11 stsp free(worktree);
410 2fbdb5ae 2018-12-29 stsp const char *
411 86c3caaf 2018-03-09 stsp got_worktree_get_repo_path(struct got_worktree *worktree)
413 2fbdb5ae 2018-12-29 stsp return worktree->repo_path;
416 49520a32 2018-12-29 stsp const char *
417 49520a32 2018-12-29 stsp got_worktree_get_path_prefix(struct got_worktree *worktree)
419 f609be2e 2018-12-29 stsp return worktree->path_prefix;
422 e5dc7198 2018-12-29 stsp const struct got_error *
423 e5dc7198 2018-12-29 stsp got_worktree_match_path_prefix(int *match, struct got_worktree *worktree,
424 e5dc7198 2018-12-29 stsp const char *path_prefix)
426 e5dc7198 2018-12-29 stsp char *absprefix = NULL;
428 e5dc7198 2018-12-29 stsp if (!got_path_is_absolute(path_prefix)) {
429 e5dc7198 2018-12-29 stsp if (asprintf(&absprefix, "/%s", path_prefix) == -1)
430 e5dc7198 2018-12-29 stsp return got_error_from_errno();
432 e5dc7198 2018-12-29 stsp *match = (strcmp(absprefix ? absprefix : path_prefix,
433 e5dc7198 2018-12-29 stsp worktree->path_prefix) == 0);
434 e5dc7198 2018-12-29 stsp free(absprefix);
435 e5dc7198 2018-12-29 stsp return NULL;
439 35be1456 2018-03-11 stsp got_worktree_get_head_ref_name(struct got_worktree *worktree)
441 271d2a38 2018-12-25 stsp return got_ref_to_str(worktree->head_ref);
444 507dc3bb 2018-12-29 stsp const struct got_object_id *
445 507dc3bb 2018-12-29 stsp got_worktree_get_base_commit_id(struct got_worktree *worktree)
447 507dc3bb 2018-12-29 stsp return worktree->base_commit_id;
450 507dc3bb 2018-12-29 stsp const struct got_error *
451 507dc3bb 2018-12-29 stsp got_worktree_set_base_commit_id(struct got_worktree *worktree,
452 507dc3bb 2018-12-29 stsp struct got_repository *repo, struct got_object_id *commit_id)
454 507dc3bb 2018-12-29 stsp const struct got_error *err;
455 507dc3bb 2018-12-29 stsp struct got_object *obj = NULL;
456 507dc3bb 2018-12-29 stsp char *id_str = NULL;
457 507dc3bb 2018-12-29 stsp char *path_got = NULL;
459 507dc3bb 2018-12-29 stsp if (asprintf(&path_got, "%s/%s", worktree->root_path,
460 507dc3bb 2018-12-29 stsp GOT_WORKTREE_GOT_DIR) == -1) {
461 507dc3bb 2018-12-29 stsp err = got_error_from_errno();
462 507dc3bb 2018-12-29 stsp path_got = NULL;
466 507dc3bb 2018-12-29 stsp err = got_object_open(&obj, repo, commit_id);
468 507dc3bb 2018-12-29 stsp return err;
470 507dc3bb 2018-12-29 stsp if (obj->type != GOT_OBJ_TYPE_COMMIT) {
471 507dc3bb 2018-12-29 stsp err = got_error(GOT_ERR_OBJ_TYPE);
475 507dc3bb 2018-12-29 stsp /* Record our base commit. */
476 507dc3bb 2018-12-29 stsp err = got_object_id_str(&id_str, commit_id);
479 507dc3bb 2018-12-29 stsp err = update_meta_file(path_got, GOT_WORKTREE_BASE_COMMIT, id_str);
483 507dc3bb 2018-12-29 stsp free(worktree->base_commit_id);
484 507dc3bb 2018-12-29 stsp worktree->base_commit_id = got_object_id_dup(commit_id);
485 507dc3bb 2018-12-29 stsp if (worktree->base_commit_id == NULL) {
486 507dc3bb 2018-12-29 stsp err = got_error_from_errno();
491 507dc3bb 2018-12-29 stsp got_object_close(obj);
492 507dc3bb 2018-12-29 stsp free(id_str);
493 507dc3bb 2018-12-29 stsp free(path_got);
494 507dc3bb 2018-12-29 stsp return err;
497 9d31a1d8 2018-03-11 stsp static const struct got_error *
498 9d31a1d8 2018-03-11 stsp lock_worktree(struct got_worktree *worktree, int operation)
500 9d31a1d8 2018-03-11 stsp if (flock(worktree->lockfd, operation | LOCK_NB) == -1)
501 9d31a1d8 2018-03-11 stsp return (errno == EWOULDBLOCK ? got_error(GOT_ERR_WORKTREE_BUSY)
502 9d31a1d8 2018-03-11 stsp : got_error_from_errno());
503 86c3caaf 2018-03-09 stsp return NULL;
506 9d31a1d8 2018-03-11 stsp static const char *
507 9d31a1d8 2018-03-11 stsp apply_path_prefix(struct got_worktree *worktree, const char *path)
509 9d31a1d8 2018-03-11 stsp const char *p = path;
510 9d31a1d8 2018-03-11 stsp p += strlen(worktree->path_prefix);
511 9d31a1d8 2018-03-11 stsp if (*p == '/')
516 9d31a1d8 2018-03-11 stsp static const struct got_error *
517 a207cf0a 2018-12-29 stsp blob_checkout(struct got_worktree *worktree, struct got_fileindex *fileindex,
518 eac9755f 2018-12-29 stsp struct got_fileindex_entry *entry, const char *path,
519 eac9755f 2018-12-29 stsp struct got_blob_object *blob, struct got_repository *repo,
520 d7b62c98 2018-12-27 stsp got_worktree_checkout_cb progress_cb, void *progress_arg,
521 d7b62c98 2018-12-27 stsp const char *progress_path)
523 9d31a1d8 2018-03-11 stsp const struct got_error *err = NULL;
524 c34b20a2 2018-03-12 stsp char *ondisk_path;
525 507dc3bb 2018-12-29 stsp int fd = -1;
526 9d31a1d8 2018-03-11 stsp size_t len, hdrlen;
527 507dc3bb 2018-12-29 stsp int update = 0;
528 507dc3bb 2018-12-29 stsp char *tmppath = NULL;
530 c34b20a2 2018-03-12 stsp if (asprintf(&ondisk_path, "%s/%s", worktree->root_path,
531 9d31a1d8 2018-03-11 stsp apply_path_prefix(worktree, path)) == -1)
532 0a585a0d 2018-03-17 stsp return got_error_from_errno();
534 c34b20a2 2018-03-12 stsp fd = open(ondisk_path, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW,
535 9d31a1d8 2018-03-11 stsp GOT_DEFAULT_FILE_MODE);
536 9d31a1d8 2018-03-11 stsp if (fd == -1) {
537 9d31a1d8 2018-03-11 stsp err = got_error_from_errno();
538 9d31a1d8 2018-03-11 stsp if (errno == EEXIST) {
539 9d31a1d8 2018-03-11 stsp struct stat sb;
540 c34b20a2 2018-03-12 stsp if (lstat(ondisk_path, &sb) == -1) {
541 9d31a1d8 2018-03-11 stsp err = got_error_from_errno();
543 9d31a1d8 2018-03-11 stsp } else if (!S_ISREG(sb.st_mode)) {
544 9d31a1d8 2018-03-11 stsp /* TODO file is obstructed; do something */
545 9d31a1d8 2018-03-11 stsp err = got_error(GOT_ERR_FILE_OBSTRUCTED);
548 507dc3bb 2018-12-29 stsp err = got_opentemp_named_fd(&tmppath, &fd,
549 507dc3bb 2018-12-29 stsp ondisk_path);
552 507dc3bb 2018-12-29 stsp update = 1;
555 507dc3bb 2018-12-29 stsp return err;
558 507dc3bb 2018-12-29 stsp (*progress_cb)(progress_arg,
559 507dc3bb 2018-12-29 stsp update ? GOT_STATUS_UPDATE : GOT_STATUS_ADD, progress_path);
561 9d31a1d8 2018-03-11 stsp hdrlen = got_object_blob_get_hdrlen(blob);
563 9d31a1d8 2018-03-11 stsp const uint8_t *buf = got_object_blob_get_read_buf(blob);
564 9d31a1d8 2018-03-11 stsp err = got_object_blob_read_block(&len, blob);
567 9d31a1d8 2018-03-11 stsp if (len > 0) {
568 9d31a1d8 2018-03-11 stsp /* Skip blob object header first time around. */
569 9d31a1d8 2018-03-11 stsp ssize_t outlen = write(fd, buf + hdrlen, len - hdrlen);
570 9d31a1d8 2018-03-11 stsp if (outlen == -1) {
571 9d31a1d8 2018-03-11 stsp err = got_error_from_errno();
573 61d6eaa3 2018-12-24 stsp } else if (outlen != len - hdrlen) {
574 9d31a1d8 2018-03-11 stsp err = got_error(GOT_ERR_IO);
577 61d6eaa3 2018-12-24 stsp hdrlen = 0;
579 9d31a1d8 2018-03-11 stsp } while (len != 0);
583 507dc3bb 2018-12-29 stsp if (update) {
584 507dc3bb 2018-12-29 stsp if (rename(tmppath, ondisk_path) != 0) {
585 507dc3bb 2018-12-29 stsp err = got_error_from_errno();
591 51514078 2018-12-25 stsp err = got_fileindex_entry_update(entry, ondisk_path,
592 51514078 2018-12-25 stsp blob->id.sha1, worktree->base_commit_id->sha1);
594 51514078 2018-12-25 stsp err = got_fileindex_entry_alloc(&entry, ondisk_path,
595 51514078 2018-12-25 stsp apply_path_prefix(worktree, path), blob->id.sha1,
596 51514078 2018-12-25 stsp worktree->base_commit_id->sha1);
599 51514078 2018-12-25 stsp err = got_fileindex_entry_add(fileindex, entry);
604 507dc3bb 2018-12-29 stsp if (fd != -1)
606 c34b20a2 2018-03-12 stsp free(ondisk_path);
607 507dc3bb 2018-12-29 stsp free(tmppath);
608 9d31a1d8 2018-03-11 stsp return err;
611 9d31a1d8 2018-03-11 stsp static const struct got_error *
612 9d31a1d8 2018-03-11 stsp add_dir_on_disk(struct got_worktree *worktree, const char *path)
614 9d31a1d8 2018-03-11 stsp const struct got_error *err = NULL;
615 9d31a1d8 2018-03-11 stsp char *abspath;
617 9d31a1d8 2018-03-11 stsp if (asprintf(&abspath, "%s/%s", worktree->root_path,
618 9d31a1d8 2018-03-11 stsp apply_path_prefix(worktree, path)) == -1)
619 0a585a0d 2018-03-17 stsp return got_error_from_errno();
621 9d31a1d8 2018-03-11 stsp /* XXX queue work rather than editing disk directly? */
622 9d31a1d8 2018-03-11 stsp if (mkdir(abspath, GOT_DEFAULT_DIR_MODE) == -1) {
623 9d31a1d8 2018-03-11 stsp struct stat sb;
625 9d31a1d8 2018-03-11 stsp if (errno != EEXIST) {
626 9d31a1d8 2018-03-11 stsp err = got_error_from_errno();
630 9d31a1d8 2018-03-11 stsp if (lstat(abspath, &sb) == -1) {
631 9d31a1d8 2018-03-11 stsp err = got_error_from_errno();
635 9d31a1d8 2018-03-11 stsp if (!S_ISDIR(sb.st_mode)) {
636 9d31a1d8 2018-03-11 stsp /* TODO directory is obstructed; do something */
637 9d31a1d8 2018-03-11 stsp return got_error(GOT_ERR_FILE_OBSTRUCTED);
642 9d31a1d8 2018-03-11 stsp free(abspath);
643 9d31a1d8 2018-03-11 stsp return err;
646 9d31a1d8 2018-03-11 stsp static const struct got_error *
647 9d31a1d8 2018-03-11 stsp tree_checkout(struct got_worktree *, struct got_fileindex *,
648 92a684f4 2018-03-12 stsp struct got_tree_object *, const char *, struct got_repository *,
649 99437157 2018-11-11 stsp got_worktree_checkout_cb progress_cb, void *progress_arg,
650 99437157 2018-11-11 stsp got_worktree_cancel_cb cancel_cb, void *cancel_arg);
652 9d31a1d8 2018-03-11 stsp static const struct got_error *
653 9d31a1d8 2018-03-11 stsp tree_checkout_entry(struct got_worktree *worktree,
654 9d31a1d8 2018-03-11 stsp struct got_fileindex *fileindex, struct got_tree_entry *te,
655 92a684f4 2018-03-12 stsp const char *parent, struct got_repository *repo,
656 99437157 2018-11-11 stsp got_worktree_checkout_cb progress_cb, void *progress_arg,
657 99437157 2018-11-11 stsp got_worktree_cancel_cb cancel_cb, void *cancel_arg)
659 9d31a1d8 2018-03-11 stsp const struct got_error *err = NULL;
660 9d31a1d8 2018-03-11 stsp struct got_object *obj = NULL;
661 9d31a1d8 2018-03-11 stsp struct got_blob_object *blob = NULL;
662 eac9755f 2018-12-29 stsp struct got_fileindex_entry *entry = NULL;
663 9d31a1d8 2018-03-11 stsp struct got_tree_object *tree = NULL;
664 9d31a1d8 2018-03-11 stsp char *path = NULL;
665 f7b38925 2018-04-01 stsp char *progress_path = NULL;
666 9d31a1d8 2018-03-11 stsp size_t len;
668 9d31a1d8 2018-03-11 stsp if (parent[0] == '/' && parent[1] == '\0')
669 9d31a1d8 2018-03-11 stsp parent = "";
670 9d31a1d8 2018-03-11 stsp if (asprintf(&path, "%s/%s", parent, te->name) == -1)
671 0a585a0d 2018-03-17 stsp return got_error_from_errno();
673 9d31a1d8 2018-03-11 stsp /* Skip this entry if it is outside of our path prefix. */
674 9d31a1d8 2018-03-11 stsp len = MIN(strlen(worktree->path_prefix), strlen(path));
675 9d31a1d8 2018-03-11 stsp if (strncmp(path, worktree->path_prefix, len) != 0) {
676 9d31a1d8 2018-03-11 stsp free(path);
677 9d31a1d8 2018-03-11 stsp return NULL;
680 9d31a1d8 2018-03-11 stsp err = got_object_open(&obj, repo, te->id);
684 f7b38925 2018-04-01 stsp progress_path = path;
685 f7b38925 2018-04-01 stsp if (strncmp(progress_path, worktree->path_prefix, len) == 0)
686 f7b38925 2018-04-01 stsp progress_path += len;
688 15a94983 2018-12-23 stsp switch (obj->type) {
689 9d31a1d8 2018-03-11 stsp case GOT_OBJ_TYPE_BLOB:
690 9d31a1d8 2018-03-11 stsp if (strlen(worktree->path_prefix) >= strlen(path))
692 eac9755f 2018-12-29 stsp entry = got_fileindex_entry_get(fileindex,
693 eac9755f 2018-12-29 stsp apply_path_prefix(worktree, path));
694 eac9755f 2018-12-29 stsp if (entry &&
695 eac9755f 2018-12-29 stsp memcmp(entry->commit_sha1, worktree->base_commit_id->sha1,
696 507dc3bb 2018-12-29 stsp SHA1_DIGEST_LENGTH) == 0) {
697 507dc3bb 2018-12-29 stsp (*progress_cb)(progress_arg, GOT_STATUS_EXISTS,
698 507dc3bb 2018-12-29 stsp progress_path);
701 507dc3bb 2018-12-29 stsp if (entry && memcmp(entry->blob_sha1, obj->id.sha1,
702 eac9755f 2018-12-29 stsp SHA1_DIGEST_LENGTH) == 0)
704 9d31a1d8 2018-03-11 stsp err = got_object_blob_open(&blob, repo, obj, 8192);
707 eac9755f 2018-12-29 stsp err = blob_checkout(worktree, fileindex, entry, path, blob,
708 eac9755f 2018-12-29 stsp repo, progress_cb, progress_arg, progress_path);
710 9d31a1d8 2018-03-11 stsp case GOT_OBJ_TYPE_TREE:
711 9d31a1d8 2018-03-11 stsp if (strlen(worktree->path_prefix) < strlen(path)) {
712 9d31a1d8 2018-03-11 stsp err = add_dir_on_disk(worktree, path);
716 381be7cc 2018-12-29 stsp err = got_object_tree_open(&tree, repo, obj);
719 99437157 2018-11-11 stsp /* XXX infinite recursion possible */
720 92a684f4 2018-03-12 stsp err = tree_checkout(worktree, fileindex, tree, path, repo,
721 99437157 2018-11-11 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
729 9d31a1d8 2018-03-11 stsp got_object_blob_close(blob);
731 9d31a1d8 2018-03-11 stsp got_object_tree_close(tree);
733 9d31a1d8 2018-03-11 stsp got_object_close(obj);
734 9d31a1d8 2018-03-11 stsp free(path);
735 9d31a1d8 2018-03-11 stsp return err;
738 9d31a1d8 2018-03-11 stsp static const struct got_error *
739 9d31a1d8 2018-03-11 stsp tree_checkout(struct got_worktree *worktree,
740 9d31a1d8 2018-03-11 stsp struct got_fileindex *fileindex, struct got_tree_object *tree,
741 92a684f4 2018-03-12 stsp const char *path, struct got_repository *repo,
742 99437157 2018-11-11 stsp got_worktree_checkout_cb progress_cb, void *progress_arg,
743 99437157 2018-11-11 stsp got_worktree_cancel_cb cancel_cb, void *cancel_arg)
745 9d31a1d8 2018-03-11 stsp const struct got_error *err = NULL;
746 883f0469 2018-06-23 stsp const struct got_tree_entries *entries;
747 9d31a1d8 2018-03-11 stsp struct got_tree_entry *te;
748 9d31a1d8 2018-03-11 stsp size_t len;
750 9d31a1d8 2018-03-11 stsp /* Skip this tree if it is outside of our path prefix. */
751 9d31a1d8 2018-03-11 stsp len = MIN(strlen(worktree->path_prefix), strlen(path));
752 9d31a1d8 2018-03-11 stsp if (strncmp(path, worktree->path_prefix, len) != 0)
753 9d31a1d8 2018-03-11 stsp return NULL;
755 883f0469 2018-06-23 stsp entries = got_object_tree_get_entries(tree);
756 883f0469 2018-06-23 stsp SIMPLEQ_FOREACH(te, &entries->head, entry) {
757 99437157 2018-11-11 stsp if (cancel_cb) {
758 99437157 2018-11-11 stsp err = (*cancel_cb)(cancel_arg);
762 92a684f4 2018-03-12 stsp err = tree_checkout_entry(worktree, fileindex, te, path, repo,
763 99437157 2018-11-11 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
768 9d31a1d8 2018-03-11 stsp return err;
771 9d31a1d8 2018-03-11 stsp const struct got_error *
772 9d31a1d8 2018-03-11 stsp got_worktree_checkout_files(struct got_worktree *worktree,
773 93a30277 2018-12-24 stsp struct got_repository *repo, got_worktree_checkout_cb progress_cb,
774 93a30277 2018-12-24 stsp void *progress_arg, got_worktree_cancel_cb cancel_cb, void *cancel_arg)
776 a143fb78 2018-12-25 stsp const struct got_error *err = NULL, *unlockerr, *checkout_err = NULL;
777 9d31a1d8 2018-03-11 stsp struct got_commit_object *commit = NULL;
778 9d31a1d8 2018-03-11 stsp struct got_tree_object *tree = NULL;
779 9d31a1d8 2018-03-11 stsp char *fileindex_path = NULL, *new_fileindex_path = NULL;
780 9d31a1d8 2018-03-11 stsp struct got_fileindex *fileindex = NULL;
781 51514078 2018-12-25 stsp FILE *index = NULL, *new_index = NULL;
783 9d31a1d8 2018-03-11 stsp err = lock_worktree(worktree, LOCK_EX);
785 9d31a1d8 2018-03-11 stsp return err;
787 7426bbfd 2018-12-24 stsp fileindex = got_fileindex_alloc();
788 9d31a1d8 2018-03-11 stsp if (fileindex == NULL) {
789 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
793 9d31a1d8 2018-03-11 stsp if (asprintf(&fileindex_path, "%s/%s/%s", worktree->root_path,
794 9d31a1d8 2018-03-11 stsp GOT_WORKTREE_GOT_DIR, GOT_WORKTREE_FILE_INDEX) == -1) {
795 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
796 9d31a1d8 2018-03-11 stsp fileindex_path = NULL;
801 51514078 2018-12-25 stsp * Read the file index.
802 51514078 2018-12-25 stsp * Checking out files is supposed to be an idempotent operation.
803 51514078 2018-12-25 stsp * If the on-disk file index is incomplete we will try to complete it.
805 51514078 2018-12-25 stsp index = fopen(fileindex_path, "rb");
806 51514078 2018-12-25 stsp if (index == NULL) {
807 51514078 2018-12-25 stsp err = got_error_from_errno();
810 51514078 2018-12-25 stsp err = got_fileindex_read(fileindex, index);
811 51514078 2018-12-25 stsp fclose(index);
815 b8bdcc21 2018-12-24 stsp err = got_opentemp_named(&new_fileindex_path, &new_index,
816 b8bdcc21 2018-12-24 stsp fileindex_path);
820 eaccb85f 2018-12-25 stsp err = got_object_open_as_commit(&commit, repo,
821 eaccb85f 2018-12-25 stsp worktree->base_commit_id);
825 93a30277 2018-12-24 stsp err = got_object_open_as_tree(&tree, repo, commit->tree_id);
829 a143fb78 2018-12-25 stsp checkout_err = tree_checkout(worktree, fileindex, tree, "/", repo,
830 a143fb78 2018-12-25 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
832 a143fb78 2018-12-25 stsp /* Try to sync the fileindex back to disk in any case. */
833 b8bdcc21 2018-12-24 stsp err = got_fileindex_write(fileindex, new_index);
837 9d31a1d8 2018-03-11 stsp if (rename(new_fileindex_path, fileindex_path) != 0) {
838 9d31a1d8 2018-03-11 stsp err = got_error_from_errno();
842 9d31a1d8 2018-03-11 stsp free(new_fileindex_path);
843 9d31a1d8 2018-03-11 stsp new_fileindex_path = NULL;
847 edfa7d7f 2018-09-11 stsp got_object_tree_close(tree);
848 9d31a1d8 2018-03-11 stsp if (commit)
849 9d31a1d8 2018-03-11 stsp got_object_commit_close(commit);
850 9d31a1d8 2018-03-11 stsp if (new_fileindex_path)
851 9d31a1d8 2018-03-11 stsp unlink(new_fileindex_path);
852 b8bdcc21 2018-12-24 stsp if (new_index)
853 b8bdcc21 2018-12-24 stsp fclose(new_index);
854 9d31a1d8 2018-03-11 stsp free(new_fileindex_path);
855 9d31a1d8 2018-03-11 stsp free(fileindex_path);
856 7426bbfd 2018-12-24 stsp got_fileindex_free(fileindex);
857 a143fb78 2018-12-25 stsp if (checkout_err)
858 a143fb78 2018-12-25 stsp err = checkout_err;
859 9d31a1d8 2018-03-11 stsp unlockerr = lock_worktree(worktree, LOCK_SH);
860 9d31a1d8 2018-03-11 stsp if (unlockerr && err == NULL)
861 9d31a1d8 2018-03-11 stsp err = unlockerr;
862 9d31a1d8 2018-03-11 stsp return err;