Bug Summary

File:tog/../lib/worktree.c
Warning:line 5288, column 22
The left operand of '==' is a garbage value

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd6.9 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name worktree.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/local/lib/clang/11.1.0 -I /home/ben/Projects/got/tog/../include -I /home/ben/Projects/got/tog/../lib -D GOT_LIBEXECDIR=/home/ben/bin -D GOT_VERSION=0.53-current -internal-isystem /usr/local/lib/clang/11.1.0/include -internal-externc-isystem /usr/include -O0 -fdebug-compilation-dir /home/ben/Projects/got/tog/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/got/scan/2021-05-28-230913-68537-1 -x c /home/ben/Projects/got/tog/../lib/worktree.c
1/*
2 * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <sys/stat.h>
18#include <sys/queue.h>
19#include <sys/tree.h>
20
21#include <dirent.h>
22#include <limits.h>
23#include <stddef.h>
24#include <string.h>
25#include <stdio.h>
26#include <stdlib.h>
27#include <time.h>
28#include <fcntl.h>
29#include <errno(*__errno()).h>
30#include <unistd.h>
31#include <sha1.h>
32#include <zlib.h>
33#include <fnmatch.h>
34#include <libgen.h>
35#include <uuid.h>
36#include <util.h>
37
38#include "got_error.h"
39#include "got_repository.h"
40#include "got_reference.h"
41#include "got_object.h"
42#include "got_path.h"
43#include "got_cancel.h"
44#include "got_worktree.h"
45#include "got_opentemp.h"
46#include "got_diff.h"
47
48#include "got_lib_worktree.h"
49#include "got_lib_sha1.h"
50#include "got_lib_fileindex.h"
51#include "got_lib_inflate.h"
52#include "got_lib_delta.h"
53#include "got_lib_object.h"
54#include "got_lib_object_parse.h"
55#include "got_lib_object_create.h"
56#include "got_lib_object_idset.h"
57#include "got_lib_diff.h"
58#include "got_lib_gotconfig.h"
59
60#ifndef MIN
61#define MIN(_a,_b)((_a) < (_b) ? (_a) : (_b)) ((_a) < (_b) ? (_a) : (_b))
62#endif
63
64#define GOT_MERGE_LABEL_MERGED"merged change" "merged change"
65#define GOT_MERGE_LABEL_BASE"3-way merge base" "3-way merge base"
66
67static const struct got_error *
68create_meta_file(const char *path_got, const char *name, const char *content)
69{
70 const struct got_error *err = NULL((void*)0);
71 char *path;
72
73 if (asprintf(&path, "%s/%s", path_got, name) == -1)
74 return got_error_from_errno("asprintf");
75
76 err = got_path_create_file(path, content);
77 free(path);
78 return err;
79}
80
81static const struct got_error *
82update_meta_file(const char *path_got, const char *name, const char *content)
83{
84 const struct got_error *err = NULL((void*)0);
85 FILE *tmpfile = NULL((void*)0);
86 char *tmppath = NULL((void*)0);
87 char *path = NULL((void*)0);
88
89 if (asprintf(&path, "%s/%s", path_got, name) == -1) {
90 err = got_error_from_errno("asprintf");
91 path = NULL((void*)0);
92 goto done;
93 }
94
95 err = got_opentemp_named(&tmppath, &tmpfile, path);
96 if (err)
97 goto done;
98
99 if (content) {
100 int len = fprintf(tmpfile, "%s\n", content);
101 if (len != strlen(content) + 1) {
102 err = got_error_from_errno2("fprintf", tmppath);
103 goto done;
104 }
105 }
106
107 if (rename(tmppath, path) != 0) {
108 err = got_error_from_errno3("rename", tmppath, path);
109 unlink(tmppath);
110 goto done;
111 }
112
113done:
114 if (fclose(tmpfile) == EOF(-1) && err == NULL((void*)0))
115 err = got_error_from_errno2("fclose", tmppath);
116 free(tmppath);
117 return err;
118}
119
120static const struct got_error *
121read_meta_file(char **content, const char *path_got, const char *name)
122{
123 const struct got_error *err = NULL((void*)0);
124 char *path;
125 int fd = -1;
126 ssize_t n;
127 struct stat sb;
128
129 *content = NULL((void*)0);
130
131 if (asprintf(&path, "%s/%s", path_got, name) == -1) {
132 err = got_error_from_errno("asprintf");
133 path = NULL((void*)0);
134 goto done;
135 }
136
137 fd = open(path, O_RDONLY0x0000 | O_NOFOLLOW0x0100);
138 if (fd == -1) {
139 if (errno(*__errno()) == ENOENT2)
140 err = got_error_path(path, GOT_ERR_WORKTREE_META27);
141 else
142 err = got_error_from_errno2("open", path);
143 goto done;
144 }
145 if (flock(fd, LOCK_SH0x01 | LOCK_NB0x04) == -1) {
146 err = (errno(*__errno()) == EWOULDBLOCK35 ? got_error(GOT_ERR_WORKTREE_BUSY29)
147 : got_error_from_errno2("flock", path));
148 goto done;
149 }
150
151 if (fstat(fd, &sb) != 0) {
152 err = got_error_from_errno2("fstat", path);
153 goto done;
154 }
155 *content = calloc(1, sb.st_size);
156 if (*content == NULL((void*)0)) {
157 err = got_error_from_errno("calloc");
158 goto done;
159 }
160
161 n = read(fd, *content, sb.st_size);
162 if (n != sb.st_size) {
163 err = (n == -1 ? got_error_from_errno2("read", path) :
164 got_error_path(path, GOT_ERR_WORKTREE_META27));
165 goto done;
166 }
167 if ((*content)[sb.st_size - 1] != '\n') {
168 err = got_error_path(path, GOT_ERR_WORKTREE_META27);
169 goto done;
170 }
171 (*content)[sb.st_size - 1] = '\0';
172
173done:
174 if (fd != -1 && close(fd) == -1 && err == NULL((void*)0))
175 err = got_error_from_errno2("close", path_got);
176 free(path);
177 if (err) {
178 free(*content);
179 *content = NULL((void*)0);
180 }
181 return err;
182}
183
184static const struct got_error *
185write_head_ref(const char *path_got, struct got_reference *head_ref)
186{
187 const struct got_error *err = NULL((void*)0);
188 char *refstr = NULL((void*)0);
189
190 if (got_ref_is_symbolic(head_ref)) {
191 refstr = got_ref_to_str(head_ref);
192 if (refstr == NULL((void*)0))
193 return got_error_from_errno("got_ref_to_str");
194 } else {
195 refstr = strdup(got_ref_get_name(head_ref));
196 if (refstr == NULL((void*)0))
197 return got_error_from_errno("strdup");
198 }
199 err = update_meta_file(path_got, GOT_WORKTREE_HEAD_REF"head-ref", refstr);
200 free(refstr);
201 return err;
202}
203
204const struct got_error *
205got_worktree_init(const char *path, struct got_reference *head_ref,
206 const char *prefix, struct got_repository *repo)
207{
208 const struct got_error *err = NULL((void*)0);
209 struct got_object_id *commit_id = NULL((void*)0);
210 uuid_t uuid;
211 uint32_t uuid_status;
212 int obj_type;
213 char *path_got = NULL((void*)0);
214 char *formatstr = NULL((void*)0);
215 char *absprefix = NULL((void*)0);
216 char *basestr = NULL((void*)0);
217 char *uuidstr = NULL((void*)0);
218
219 if (strcmp(path, got_repo_get_path(repo)) == 0) {
220 err = got_error(GOT_ERR_WORKTREE_REPO66);
221 goto done;
222 }
223
224 err = got_ref_resolve(&commit_id, repo, head_ref);
225 if (err)
226 return err;
227 err = got_object_get_type(&obj_type, repo, commit_id);
228 if (err)
229 return err;
230 if (obj_type != GOT_OBJ_TYPE_COMMIT1)
231 return got_error(GOT_ERR_OBJ_TYPE11);
232
233 if (!got_path_is_absolute(prefix)) {
234 if (asprintf(&absprefix, "/%s", prefix) == -1)
235 return got_error_from_errno("asprintf");
236 }
237
238 /* Create top-level directory (may already exist). */
239 if (mkdir(path, GOT_DEFAULT_DIR_MODE(0040000 | 0000700 | 0000040|0000010 | 0000004|0000001)) == -1 && errno(*__errno()) != EEXIST17) {
240 err = got_error_from_errno2("mkdir", path);
241 goto done;
242 }
243
244 /* Create .got directory (may already exist). */
245 if (asprintf(&path_got, "%s/%s", path, GOT_WORKTREE_GOT_DIR".got") == -1) {
246 err = got_error_from_errno("asprintf");
247 goto done;
248 }
249 if (mkdir(path_got, GOT_DEFAULT_DIR_MODE(0040000 | 0000700 | 0000040|0000010 | 0000004|0000001)) == -1 && errno(*__errno()) != EEXIST17) {
250 err = got_error_from_errno2("mkdir", path_got);
251 goto done;
252 }
253
254 /* Create an empty lock file. */
255 err = create_meta_file(path_got, GOT_WORKTREE_LOCK"lock", NULL((void*)0));
256 if (err)
257 goto done;
258
259 /* Create an empty file index. */
260 err = create_meta_file(path_got, GOT_WORKTREE_FILE_INDEX"file-index", NULL((void*)0));
261 if (err)
262 goto done;
263
264 /* Write the HEAD reference. */
265 err = write_head_ref(path_got, head_ref);
266 if (err)
267 goto done;
268
269 /* Record our base commit. */
270 err = got_object_id_str(&basestr, commit_id);
271 if (err)
272 goto done;
273 err = create_meta_file(path_got, GOT_WORKTREE_BASE_COMMIT"base-commit", basestr);
274 if (err)
275 goto done;
276
277 /* Store path to repository. */
278 err = create_meta_file(path_got, GOT_WORKTREE_REPOSITORY"repository",
279 got_repo_get_path(repo));
280 if (err)
281 goto done;
282
283 /* Store in-repository path prefix. */
284 err = create_meta_file(path_got, GOT_WORKTREE_PATH_PREFIX"path-prefix",
285 absprefix ? absprefix : prefix);
286 if (err)
287 goto done;
288
289 /* Generate UUID. */
290 uuid_create(&uuid, &uuid_status);
291 if (uuid_status != uuid_s_ok0) {
292 err = got_error_uuid(uuid_status, "uuid_create");
293 goto done;
294 }
295 uuid_to_string(&uuid, &uuidstr, &uuid_status);
296 if (uuid_status != uuid_s_ok0) {
297 err = got_error_uuid(uuid_status, "uuid_to_string");
298 goto done;
299 }
300 err = create_meta_file(path_got, GOT_WORKTREE_UUID"uuid", uuidstr);
301 if (err)
302 goto done;
303
304 /* Stamp work tree with format file. */
305 if (asprintf(&formatstr, "%d", GOT_WORKTREE_FORMAT_VERSION1) == -1) {
306 err = got_error_from_errno("asprintf");
307 goto done;
308 }
309 err = create_meta_file(path_got, GOT_WORKTREE_FORMAT"format", formatstr);
310 if (err)
311 goto done;
312
313done:
314 free(commit_id);
315 free(path_got);
316 free(formatstr);
317 free(absprefix);
318 free(basestr);
319 free(uuidstr);
320 return err;
321}
322
323static const struct got_error *
324open_worktree(struct got_worktree **worktree, const char *path)
325{
326 const struct got_error *err = NULL((void*)0);
327 char *path_got;
328 char *formatstr = NULL((void*)0);
329 char *uuidstr = NULL((void*)0);
330 char *path_lock = NULL((void*)0);
331 char *base_commit_id_str = NULL((void*)0);
332 int version, fd = -1;
333 const char *errstr;
334 struct got_repository *repo = NULL((void*)0);
335 uint32_t uuid_status;
336
337 *worktree = NULL((void*)0);
338
339 if (asprintf(&path_got, "%s/%s", path, GOT_WORKTREE_GOT_DIR".got") == -1) {
340 err = got_error_from_errno("asprintf");
341 path_got = NULL((void*)0);
342 goto done;
343 }
344
345 if (asprintf(&path_lock, "%s/%s", path_got, GOT_WORKTREE_LOCK"lock") == -1) {
346 err = got_error_from_errno("asprintf");
347 path_lock = NULL((void*)0);
348 goto done;
349 }
350
351 fd = open(path_lock, O_RDWR0x0002 | O_EXLOCK0x0020 | O_NONBLOCK0x0004);
352 if (fd == -1) {
353 err = (errno(*__errno()) == EWOULDBLOCK35 ? got_error(GOT_ERR_WORKTREE_BUSY29)
354 : got_error_from_errno2("open", path_lock));
355 goto done;
356 }
357
358 err = read_meta_file(&formatstr, path_got, GOT_WORKTREE_FORMAT"format");
359 if (err)
360 goto done;
361
362 version = strtonum(formatstr, 1, INT_MAX2147483647, &errstr);
363 if (errstr) {
364 err = got_error_msg(GOT_ERR_WORKTREE_META27,
365 "could not parse work tree format version number");
366 goto done;
367 }
368 if (version != GOT_WORKTREE_FORMAT_VERSION1) {
369 err = got_error(GOT_ERR_WORKTREE_VERS28);
370 goto done;
371 }
372
373 *worktree = calloc(1, sizeof(**worktree));
374 if (*worktree == NULL((void*)0)) {
375 err = got_error_from_errno("calloc");
376 goto done;
377 }
378 (*worktree)->lockfd = -1;
379
380 (*worktree)->root_path = realpath(path, NULL((void*)0));
381 if ((*worktree)->root_path == NULL((void*)0)) {
382 err = got_error_from_errno2("realpath", path);
383 goto done;
384 }
385 err = read_meta_file(&(*worktree)->repo_path, path_got,
386 GOT_WORKTREE_REPOSITORY"repository");
387 if (err)
388 goto done;
389
390 err = read_meta_file(&(*worktree)->path_prefix, path_got,
391 GOT_WORKTREE_PATH_PREFIX"path-prefix");
392 if (err)
393 goto done;
394
395 err = read_meta_file(&base_commit_id_str, path_got,
396 GOT_WORKTREE_BASE_COMMIT"base-commit");
397 if (err)
398 goto done;
399
400 err = read_meta_file(&uuidstr, path_got, GOT_WORKTREE_UUID"uuid");
401 if (err)
402 goto done;
403 uuid_from_string(uuidstr, &(*worktree)->uuid, &uuid_status);
404 if (uuid_status != uuid_s_ok0) {
405 err = got_error_uuid(uuid_status, "uuid_from_string");
406 goto done;
407 }
408
409 err = got_repo_open(&repo, (*worktree)->repo_path, NULL((void*)0));
410 if (err)
411 goto done;
412
413 err = got_object_resolve_id_str(&(*worktree)->base_commit_id, repo,
414 base_commit_id_str);
415 if (err)
416 goto done;
417
418 err = read_meta_file(&(*worktree)->head_ref_name, path_got,
419 GOT_WORKTREE_HEAD_REF"head-ref");
420 if (err)
421 goto done;
422
423 if (asprintf(&(*worktree)->gotconfig_path, "%s/%s/%s",
424 (*worktree)->root_path,
425 GOT_WORKTREE_GOT_DIR".got", GOT_GOTCONFIG_FILENAME"got.conf") == -1) {
426 err = got_error_from_errno("asprintf");
427 goto done;
428 }
429
430 err = got_gotconfig_read(&(*worktree)->gotconfig,
431 (*worktree)->gotconfig_path);
432
433 (*worktree)->root_fd = open((*worktree)->root_path, O_DIRECTORY0x20000);
434 if ((*worktree)->root_fd == -1) {
435 err = got_error_from_errno2("open", (*worktree)->root_path);
436 goto done;
437 }
438done:
439 if (repo)
440 got_repo_close(repo);
441 free(path_got);
442 free(path_lock);
443 free(base_commit_id_str);
444 free(uuidstr);
445 free(formatstr);
446 if (err) {
447 if (fd != -1)
448 close(fd);
449 if (*worktree != NULL((void*)0))
450 got_worktree_close(*worktree);
451 *worktree = NULL((void*)0);
452 } else
453 (*worktree)->lockfd = fd;
454
455 return err;
456}
457
458const struct got_error *
459got_worktree_open(struct got_worktree **worktree, const char *path)
460{
461 const struct got_error *err = NULL((void*)0);
462 char *worktree_path;
463
464 worktree_path = strdup(path);
465 if (worktree_path == NULL((void*)0))
466 return got_error_from_errno("strdup");
467
468 for (;;) {
469 char *parent_path;
470
471 err = open_worktree(worktree, worktree_path);
472 if (err && !(err->code == GOT_ERR_ERRNO1 && errno(*__errno()) == ENOENT2)) {
473 free(worktree_path);
474 return err;
475 }
476 if (*worktree) {
477 free(worktree_path);
478 return NULL((void*)0);
479 }
480 if (worktree_path[0] == '/' && worktree_path[1] == '\0')
481 break;
482 err = got_path_dirname(&parent_path, worktree_path);
483 if (err) {
484 if (err->code != GOT_ERR_BAD_PATH4) {
485 free(worktree_path);
486 return err;
487 }
488 break;
489 }
490 free(worktree_path);
491 worktree_path = parent_path;
492 }
493
494 free(worktree_path);
495 return got_error(GOT_ERR_NOT_WORKTREE60);
496}
497
498const struct got_error *
499got_worktree_close(struct got_worktree *worktree)
500{
501 const struct got_error *err = NULL((void*)0);
502
503 if (worktree->lockfd != -1) {
504 if (close(worktree->lockfd) == -1)
505 err = got_error_from_errno2("close",
506 got_worktree_get_root_path(worktree));
507 }
508 if (close(worktree->root_fd) == -1 && err == NULL((void*)0))
509 err = got_error_from_errno2("close",
510 got_worktree_get_root_path(worktree));
511 free(worktree->repo_path);
512 free(worktree->path_prefix);
513 free(worktree->base_commit_id);
514 free(worktree->head_ref_name);
515 free(worktree->root_path);
516 free(worktree->gotconfig_path);
517 got_gotconfig_free(worktree->gotconfig);
518 free(worktree);
519 return err;
520}
521
522const char *
523got_worktree_get_root_path(struct got_worktree *worktree)
524{
525 return worktree->root_path;
526}
527
528const char *
529got_worktree_get_repo_path(struct got_worktree *worktree)
530{
531 return worktree->repo_path;
532}
533const char *
534got_worktree_get_path_prefix(struct got_worktree *worktree)
535{
536 return worktree->path_prefix;
537}
538
539const struct got_error *
540got_worktree_match_path_prefix(int *match, struct got_worktree *worktree,
541 const char *path_prefix)
542{
543 char *absprefix = NULL((void*)0);
544
545 if (!got_path_is_absolute(path_prefix)) {
546 if (asprintf(&absprefix, "/%s", path_prefix) == -1)
547 return got_error_from_errno("asprintf");
548 }
549 *match = (strcmp(absprefix ? absprefix : path_prefix,
550 worktree->path_prefix) == 0);
551 free(absprefix);
552 return NULL((void*)0);
553}
554
555const char *
556got_worktree_get_head_ref_name(struct got_worktree *worktree)
557{
558 return worktree->head_ref_name;
559}
560
561const struct got_error *
562got_worktree_set_head_ref(struct got_worktree *worktree,
563 struct got_reference *head_ref)
564{
565 const struct got_error *err = NULL((void*)0);
566 char *path_got = NULL((void*)0), *head_ref_name = NULL((void*)0);
567
568 if (asprintf(&path_got, "%s/%s", worktree->root_path,
569 GOT_WORKTREE_GOT_DIR".got") == -1) {
570 err = got_error_from_errno("asprintf");
571 path_got = NULL((void*)0);
572 goto done;
573 }
574
575 head_ref_name = strdup(got_ref_get_name(head_ref));
576 if (head_ref_name == NULL((void*)0)) {
577 err = got_error_from_errno("strdup");
578 goto done;
579 }
580
581 err = write_head_ref(path_got, head_ref);
582 if (err)
583 goto done;
584
585 free(worktree->head_ref_name);
586 worktree->head_ref_name = head_ref_name;
587done:
588 free(path_got);
589 if (err)
590 free(head_ref_name);
591 return err;
592}
593
594struct got_object_id *
595got_worktree_get_base_commit_id(struct got_worktree *worktree)
596{
597 return worktree->base_commit_id;
598}
599
600const struct got_error *
601got_worktree_set_base_commit_id(struct got_worktree *worktree,
602 struct got_repository *repo, struct got_object_id *commit_id)
603{
604 const struct got_error *err;
605 struct got_object *obj = NULL((void*)0);
606 char *id_str = NULL((void*)0);
607 char *path_got = NULL((void*)0);
608
609 if (asprintf(&path_got, "%s/%s", worktree->root_path,
610 GOT_WORKTREE_GOT_DIR".got") == -1) {
611 err = got_error_from_errno("asprintf");
612 path_got = NULL((void*)0);
613 goto done;
614 }
615
616 err = got_object_open(&obj, repo, commit_id);
617 if (err)
618 return err;
619
620 if (obj->type != GOT_OBJ_TYPE_COMMIT1) {
621 err = got_error(GOT_ERR_OBJ_TYPE11);
622 goto done;
623 }
624
625 /* Record our base commit. */
626 err = got_object_id_str(&id_str, commit_id);
627 if (err)
628 goto done;
629 err = update_meta_file(path_got, GOT_WORKTREE_BASE_COMMIT"base-commit", id_str);
630 if (err)
631 goto done;
632
633 free(worktree->base_commit_id);
634 worktree->base_commit_id = got_object_id_dup(commit_id);
635 if (worktree->base_commit_id == NULL((void*)0)) {
636 err = got_error_from_errno("got_object_id_dup");
637 goto done;
638 }
639done:
640 if (obj)
641 got_object_close(obj);
642 free(id_str);
643 free(path_got);
644 return err;
645}
646
647const struct got_gotconfig *
648got_worktree_get_gotconfig(struct got_worktree *worktree)
649{
650 return worktree->gotconfig;
651}
652
653static const struct got_error *
654lock_worktree(struct got_worktree *worktree, int operation)
655{
656 if (flock(worktree->lockfd, operation | LOCK_NB0x04) == -1)
657 return (errno(*__errno()) == EWOULDBLOCK35 ? got_error(GOT_ERR_WORKTREE_BUSY29)
658 : got_error_from_errno2("flock",
659 got_worktree_get_root_path(worktree)));
660 return NULL((void*)0);
661}
662
663static const struct got_error *
664add_dir_on_disk(struct got_worktree *worktree, const char *path)
665{
666 const struct got_error *err = NULL((void*)0);
667 char *abspath;
668
669 if (asprintf(&abspath, "%s/%s", worktree->root_path, path) == -1)
670 return got_error_from_errno("asprintf");
671
672 err = got_path_mkdir(abspath);
673 if (err && err->code == GOT_ERR_ERRNO1 && errno(*__errno()) == EEXIST17) {
674 struct stat sb;
675 err = NULL((void*)0);
676 if (lstat(abspath, &sb) == -1) {
677 err = got_error_from_errno2("lstat", abspath);
678 } else if (!S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000)) {
679 /* TODO directory is obstructed; do something */
680 err = got_error_path(abspath, GOT_ERR_FILE_OBSTRUCTED31);
681 }
682 }
683 free(abspath);
684 return err;
685}
686
687static const struct got_error *
688check_file_contents_equal(int *same, FILE *f1, FILE *f2)
689{
690 const struct got_error *err = NULL((void*)0);
691 uint8_t fbuf1[8192];
692 uint8_t fbuf2[8192];
693 size_t flen1 = 0, flen2 = 0;
694
695 *same = 1;
696
697 for (;;) {
698 flen1 = fread(fbuf1, 1, sizeof(fbuf1), f1);
699 if (flen1 == 0 && ferror(f1)(!__isthreaded ? (((f1)->_flags & 0x0040) != 0) : (ferror
)(f1))
) {
700 err = got_error_from_errno("fread");
701 break;
702 }
703 flen2 = fread(fbuf2, 1, sizeof(fbuf2), f2);
704 if (flen2 == 0 && ferror(f2)(!__isthreaded ? (((f2)->_flags & 0x0040) != 0) : (ferror
)(f2))
) {
705 err = got_error_from_errno("fread");
706 break;
707 }
708 if (flen1 == 0) {
709 if (flen2 != 0)
710 *same = 0;
711 break;
712 } else if (flen2 == 0) {
713 if (flen1 != 0)
714 *same = 0;
715 break;
716 } else if (flen1 == flen2) {
717 if (memcmp(fbuf1, fbuf2, flen2) != 0) {
718 *same = 0;
719 break;
720 }
721 } else {
722 *same = 0;
723 break;
724 }
725 }
726
727 return err;
728}
729
730static const struct got_error *
731check_files_equal(int *same, const char *f1_path, const char *f2_path)
732{
733 const struct got_error *err = NULL((void*)0);
734 struct stat sb;
735 size_t size1, size2;
736 FILE *f1 = NULL((void*)0), *f2 = NULL((void*)0);
737
738 *same = 1;
739
740 if (lstat(f1_path, &sb) != 0) {
741 err = got_error_from_errno2("lstat", f1_path);
742 goto done;
743 }
744 size1 = sb.st_size;
745
746 if (lstat(f2_path, &sb) != 0) {
747 err = got_error_from_errno2("lstat", f2_path);
748 goto done;
749 }
750 size2 = sb.st_size;
751
752 if (size1 != size2) {
753 *same = 0;
754 return NULL((void*)0);
755 }
756
757 f1 = fopen(f1_path, "r");
758 if (f1 == NULL((void*)0))
759 return got_error_from_errno2("fopen", f1_path);
760
761 f2 = fopen(f2_path, "r");
762 if (f2 == NULL((void*)0)) {
763 err = got_error_from_errno2("fopen", f2_path);
764 goto done;
765 }
766
767 err = check_file_contents_equal(same, f1, f2);
768done:
769 if (f1 && fclose(f1) == EOF(-1) && err == NULL((void*)0))
770 err = got_error_from_errno("fclose");
771 if (f2 && fclose(f2) == EOF(-1) && err == NULL((void*)0))
772 err = got_error_from_errno("fclose");
773
774 return err;
775}
776
777/*
778 * Perform a 3-way merge where blob_orig acts as the common ancestor,
779 * the file at deriv_path acts as the first derived version, and the
780 * file on disk acts as the second derived version.
781 */
782static const struct got_error *
783merge_file(int *local_changes_subsumed, struct got_worktree *worktree,
784 struct got_blob_object *blob_orig, const char *ondisk_path,
785 const char *path, uint16_t st_mode, const char *deriv_path,
786 const char *label_orig, const char *label_deriv,
787 struct got_repository *repo,
788 got_worktree_checkout_cb progress_cb, void *progress_arg)
789{
790 const struct got_error *err = NULL((void*)0);
791 int merged_fd = -1;
792 FILE *f_orig = NULL((void*)0);
793 char *blob_orig_path = NULL((void*)0);
794 char *merged_path = NULL((void*)0), *base_path = NULL((void*)0);
795 int overlapcnt = 0;
796 char *parent = NULL((void*)0);
797 char *symlink_path = NULL((void*)0);
798 FILE *symlinkf = NULL((void*)0);
799
800 *local_changes_subsumed = 0;
801
802 err = got_path_dirname(&parent, ondisk_path);
803 if (err)
804 return err;
805
806 if (asprintf(&base_path, "%s/got-merged", parent) == -1) {
807 err = got_error_from_errno("asprintf");
808 goto done;
809 }
810
811 err = got_opentemp_named_fd(&merged_path, &merged_fd, base_path);
812 if (err)
813 goto done;
814
815 free(base_path);
816 if (asprintf(&base_path, "%s/got-merge-blob-orig", parent) == -1) {
817 err = got_error_from_errno("asprintf");
818 base_path = NULL((void*)0);
819 goto done;
820 }
821
822 err = got_opentemp_named(&blob_orig_path, &f_orig, base_path);
823 if (err)
824 goto done;
825 if (blob_orig) {
826 err = got_object_blob_dump_to_file(NULL((void*)0), NULL((void*)0), NULL((void*)0), f_orig,
827 blob_orig);
828 if (err)
829 goto done;
830 } else {
831 /*
832 * If the file has no blob, this is an "add vs add" conflict,
833 * and we simply use an empty ancestor file to make both files
834 * appear in the merged result in their entirety.
835 */
836 }
837
838 /*
839 * In order the run a 3-way merge with a symlink we copy the symlink's
840 * target path into a temporary file and use that file with diff3.
841 */
842 if (S_ISLNK(st_mode)((st_mode & 0170000) == 0120000)) {
843 char target_path[PATH_MAX1024];
844 ssize_t target_len;
845 size_t n;
846
847 free(base_path);
848 if (asprintf(&base_path, "%s/got-symlink-merge",
849 parent) == -1) {
850 err = got_error_from_errno("asprintf");
851 base_path = NULL((void*)0);
852 goto done;
853 }
854 err = got_opentemp_named(&symlink_path, &symlinkf, base_path);
855 if (err)
856 goto done;
857 target_len = readlink(ondisk_path, target_path,
858 sizeof(target_path));
859 if (target_len == -1) {
860 err = got_error_from_errno2("readlink", ondisk_path);
861 goto done;
862 }
863 n = fwrite(target_path, 1, target_len, symlinkf);
864 if (n != target_len) {
865 err = got_ferror(symlinkf, GOT_ERR_IO6);
866 goto done;
867 }
868 if (fflush(symlinkf) == EOF(-1)) {
869 err = got_error_from_errno2("fflush", symlink_path);
870 goto done;
871 }
872 }
873
874 err = got_merge_diff3(&overlapcnt, merged_fd, deriv_path,
875 blob_orig_path, symlink_path ? symlink_path : ondisk_path,
876 label_deriv, label_orig, NULL((void*)0));
877 if (err)
878 goto done;
879
880 err = (*progress_cb)(progress_arg,
881 overlapcnt > 0 ? GOT_STATUS_CONFLICT'C' : GOT_STATUS_MERGE'G', path);
882 if (err)
883 goto done;
884
885 if (fsync(merged_fd) != 0) {
886 err = got_error_from_errno("fsync");
887 goto done;
888 }
889
890 /* Check if a clean merge has subsumed all local changes. */
891 if (overlapcnt == 0) {
892 err = check_files_equal(local_changes_subsumed, deriv_path,
893 merged_path);
894 if (err)
895 goto done;
896 }
897
898 if (fchmod(merged_fd, st_mode) != 0) {
899 err = got_error_from_errno2("fchmod", merged_path);
900 goto done;
901 }
902
903 if (rename(merged_path, ondisk_path) != 0) {
904 err = got_error_from_errno3("rename", merged_path,
905 ondisk_path);
906 goto done;
907 }
908done:
909 if (err) {
910 if (merged_path)
911 unlink(merged_path);
912 }
913 if (symlink_path) {
914 if (unlink(symlink_path) == -1 && err == NULL((void*)0))
915 err = got_error_from_errno2("unlink", symlink_path);
916 }
917 if (symlinkf && fclose(symlinkf) == EOF(-1) && err == NULL((void*)0))
918 err = got_error_from_errno2("fclose", symlink_path);
919 free(symlink_path);
920 if (merged_fd != -1 && close(merged_fd) == -1 && err == NULL((void*)0))
921 err = got_error_from_errno("close");
922 if (f_orig && fclose(f_orig) == EOF(-1) && err == NULL((void*)0))
923 err = got_error_from_errno("fclose");
924 free(merged_path);
925 free(base_path);
926 if (blob_orig_path) {
927 unlink(blob_orig_path);
928 free(blob_orig_path);
929 }
930 free(parent);
931 return err;
932}
933
934static const struct got_error *
935update_symlink(const char *ondisk_path, const char *target_path,
936 size_t target_len)
937{
938 /* This is not atomic but matches what 'ln -sf' does. */
939 if (unlink(ondisk_path) == -1)
940 return got_error_from_errno2("unlink", ondisk_path);
941 if (symlink(target_path, ondisk_path) == -1)
942 return got_error_from_errno3("symlink", target_path,
943 ondisk_path);
944 return NULL((void*)0);
945}
946
947/*
948 * Overwrite a symlink (or a regular file in case there was a "bad" symlink)
949 * in the work tree with a file that contains conflict markers and the
950 * conflicting target paths of the original version, a "derived version"
951 * of a symlink from an incoming change, and a local version of the symlink.
952 *
953 * The original versions's target path can be NULL if it is not available,
954 * such as if both derived versions added a new symlink at the same path.
955 *
956 * The incoming derived symlink target is NULL in case the incoming change
957 * has deleted this symlink.
958 */
959static const struct got_error *
960install_symlink_conflict(const char *deriv_target,
961 struct got_object_id *deriv_base_commit_id, const char *orig_target,
962 const char *label_orig, const char *local_target, const char *ondisk_path)
963{
964 const struct got_error *err;
965 char *id_str = NULL((void*)0), *label_deriv = NULL((void*)0), *path = NULL((void*)0);
966 FILE *f = NULL((void*)0);
967
968 err = got_object_id_str(&id_str, deriv_base_commit_id);
969 if (err)
970 return got_error_from_errno("asprintf");
971
972 if (asprintf(&label_deriv, "%s: commit %s",
973 GOT_MERGE_LABEL_MERGED"merged change", id_str) == -1) {
974 err = got_error_from_errno("asprintf");
975 goto done;
976 }
977
978 err = got_opentemp_named(&path, &f, "got-symlink-conflict");
979 if (err)
980 goto done;
981
982 if (fchmod(fileno(f)(!__isthreaded ? ((f)->_file) : (fileno)(f)), GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004)) == -1) {
983 err = got_error_from_errno2("fchmod", path);
984 goto done;
985 }
986
987 if (fprintf(f, "%s %s\n%s\n%s%s%s%s%s\n%s\n%s\n",
988 GOT_DIFF_CONFLICT_MARKER_BEGIN"<<<<<<<", label_deriv,
989 deriv_target ? deriv_target : "(symlink was deleted)",
990 orig_target ? label_orig : "",
991 orig_target ? "\n" : "",
992 orig_target ? orig_target : "",
993 orig_target ? "\n" : "",
994 GOT_DIFF_CONFLICT_MARKER_SEP"=======",
995 local_target, GOT_DIFF_CONFLICT_MARKER_END">>>>>>>") < 0) {
996 err = got_error_from_errno2("fprintf", path);
997 goto done;
998 }
999
1000 if (unlink(ondisk_path) == -1) {
1001 err = got_error_from_errno2("unlink", ondisk_path);
1002 goto done;
1003 }
1004 if (rename(path, ondisk_path) == -1) {
1005 err = got_error_from_errno3("rename", path, ondisk_path);
1006 goto done;
1007 }
1008done:
1009 if (f != NULL((void*)0) && fclose(f) == EOF(-1) && err == NULL((void*)0))
1010 err = got_error_from_errno2("fclose", path);
1011 free(path);
1012 free(id_str);
1013 free(label_deriv);
1014 return err;
1015}
1016
1017/* forward declaration */
1018static const struct got_error *
1019merge_blob(int *, struct got_worktree *, struct got_blob_object *,
1020 const char *, const char *, uint16_t, const char *,
1021 struct got_blob_object *, struct got_object_id *,
1022 struct got_repository *, got_worktree_checkout_cb, void *);
1023
1024/*
1025 * Merge a symlink into the work tree, where blob_orig acts as the common
1026 * ancestor, deriv_target is the link target of the first derived version,
1027 * and the symlink on disk acts as the second derived version.
1028 * Assume that contents of both blobs represent symlinks.
1029 */
1030static const struct got_error *
1031merge_symlink(struct got_worktree *worktree,
1032 struct got_blob_object *blob_orig, const char *ondisk_path,
1033 const char *path, const char *label_orig, const char *deriv_target,
1034 struct got_object_id *deriv_base_commit_id, struct got_repository *repo,
1035 got_worktree_checkout_cb progress_cb, void *progress_arg)
1036{
1037 const struct got_error *err = NULL((void*)0);
1038 char *ancestor_target = NULL((void*)0);
1039 struct stat sb;
1040 ssize_t ondisk_len, deriv_len;
1041 char ondisk_target[PATH_MAX1024];
1042 int have_local_change = 0;
1043 int have_incoming_change = 0;
1044
1045 if (lstat(ondisk_path, &sb) == -1)
1046 return got_error_from_errno2("lstat", ondisk_path);
1047
1048 ondisk_len = readlink(ondisk_path, ondisk_target,
1049 sizeof(ondisk_target));
1050 if (ondisk_len == -1) {
1051 err = got_error_from_errno2("readlink",
1052 ondisk_path);
1053 goto done;
1054 }
1055 ondisk_target[ondisk_len] = '\0';
1056
1057 if (blob_orig) {
1058 err = got_object_blob_read_to_str(&ancestor_target, blob_orig);
1059 if (err)
1060 goto done;
1061 }
1062
1063 if (ancestor_target == NULL((void*)0) ||
1064 (ondisk_len != strlen(ancestor_target) ||
1065 memcmp(ondisk_target, ancestor_target, ondisk_len) != 0))
1066 have_local_change = 1;
1067
1068 deriv_len = strlen(deriv_target);
1069 if (ancestor_target == NULL((void*)0) ||
1070 (deriv_len != strlen(ancestor_target) ||
1071 memcmp(deriv_target, ancestor_target, deriv_len) != 0))
1072 have_incoming_change = 1;
1073
1074 if (!have_local_change && !have_incoming_change) {
1075 if (ancestor_target) {
1076 /* Both sides made the same change. */
1077 err = (*progress_cb)(progress_arg, GOT_STATUS_MERGE'G',
1078 path);
1079 } else if (deriv_len == ondisk_len &&
1080 memcmp(ondisk_target, deriv_target, deriv_len) == 0) {
1081 /* Both sides added the same symlink. */
1082 err = (*progress_cb)(progress_arg, GOT_STATUS_MERGE'G',
1083 path);
1084 } else {
1085 /* Both sides added symlinks which don't match. */
1086 err = install_symlink_conflict(deriv_target,
1087 deriv_base_commit_id, ancestor_target,
1088 label_orig, ondisk_target, ondisk_path);
1089 if (err)
1090 goto done;
1091 err = (*progress_cb)(progress_arg, GOT_STATUS_CONFLICT'C',
1092 path);
1093 }
1094 } else if (!have_local_change && have_incoming_change) {
1095 /* Apply the incoming change. */
1096 err = update_symlink(ondisk_path, deriv_target,
1097 strlen(deriv_target));
1098 if (err)
1099 goto done;
1100 err = (*progress_cb)(progress_arg, GOT_STATUS_MERGE'G', path);
1101 } else if (have_local_change && have_incoming_change) {
1102 if (deriv_len == ondisk_len &&
1103 memcmp(deriv_target, ondisk_target, deriv_len) == 0) {
1104 /* Both sides made the same change. */
1105 err = (*progress_cb)(progress_arg, GOT_STATUS_MERGE'G',
1106 path);
1107 } else {
1108 err = install_symlink_conflict(deriv_target,
1109 deriv_base_commit_id, ancestor_target, label_orig,
1110 ondisk_target, ondisk_path);
1111 if (err)
1112 goto done;
1113 err = (*progress_cb)(progress_arg, GOT_STATUS_CONFLICT'C',
1114 path);
1115 }
1116 }
1117
1118done:
1119 free(ancestor_target);
1120 return err;
1121}
1122
1123/*
1124 * Perform a 3-way merge where blob_orig acts as the common ancestor,
1125 * blob_deriv acts as the first derived version, and the file on disk
1126 * acts as the second derived version.
1127 */
1128static const struct got_error *
1129merge_blob(int *local_changes_subsumed, struct got_worktree *worktree,
1130 struct got_blob_object *blob_orig, const char *ondisk_path,
1131 const char *path, uint16_t st_mode, const char *label_orig,
1132 struct got_blob_object *blob_deriv,
1133 struct got_object_id *deriv_base_commit_id, struct got_repository *repo,
1134 got_worktree_checkout_cb progress_cb, void *progress_arg)
1135{
1136 const struct got_error *err = NULL((void*)0);
1137 FILE *f_deriv = NULL((void*)0);
1138 char *blob_deriv_path = NULL((void*)0), *base_path = NULL((void*)0), *id_str = NULL((void*)0);
1139 char *label_deriv = NULL((void*)0), *parent = NULL((void*)0);
1140
1141 *local_changes_subsumed = 0;
1142
1143 err = got_path_dirname(&parent, ondisk_path);
1144 if (err)
1145 return err;
1146
1147 free(base_path);
1148 if (asprintf(&base_path, "%s/got-merge-blob-deriv", parent) == -1) {
1149 err = got_error_from_errno("asprintf");
1150 base_path = NULL((void*)0);
1151 goto done;
1152 }
1153
1154 err = got_opentemp_named(&blob_deriv_path, &f_deriv, base_path);
1155 if (err)
1156 goto done;
1157 err = got_object_blob_dump_to_file(NULL((void*)0), NULL((void*)0), NULL((void*)0), f_deriv,
1158 blob_deriv);
1159 if (err)
1160 goto done;
1161
1162 err = got_object_id_str(&id_str, deriv_base_commit_id);
1163 if (err)
1164 goto done;
1165 if (asprintf(&label_deriv, "%s: commit %s",
1166 GOT_MERGE_LABEL_MERGED"merged change", id_str) == -1) {
1167 err = got_error_from_errno("asprintf");
1168 goto done;
1169 }
1170
1171 err = merge_file(local_changes_subsumed, worktree, blob_orig,
1172 ondisk_path, path, st_mode, blob_deriv_path, label_orig,
1173 label_deriv, repo, progress_cb, progress_arg);
1174done:
1175 if (f_deriv && fclose(f_deriv) == EOF(-1) && err == NULL((void*)0))
1176 err = got_error_from_errno("fclose");
1177 free(base_path);
1178 if (blob_deriv_path) {
1179 unlink(blob_deriv_path);
1180 free(blob_deriv_path);
1181 }
1182 free(id_str);
1183 free(label_deriv);
1184 free(parent);
1185 return err;
1186}
1187
1188static const struct got_error *
1189create_fileindex_entry(struct got_fileindex_entry **new_iep,
1190 struct got_fileindex *fileindex, struct got_object_id *base_commit_id,
1191 int wt_fd, const char *path, struct got_object_id *blob_id)
1192{
1193 const struct got_error *err = NULL((void*)0);
1194 struct got_fileindex_entry *new_ie;
1195
1196 *new_iep = NULL((void*)0);
1197
1198 err = got_fileindex_entry_alloc(&new_ie, path);
1199 if (err)
1200 return err;
1201
1202 err = got_fileindex_entry_update(new_ie, wt_fd, path,
1203 blob_id->sha1, base_commit_id->sha1, 1);
1204 if (err)
1205 goto done;
1206
1207 err = got_fileindex_entry_add(fileindex, new_ie);
1208done:
1209 if (err)
1210 got_fileindex_entry_free(new_ie);
1211 else
1212 *new_iep = new_ie;
1213 return err;
1214}
1215
1216static mode_t
1217get_ondisk_perms(int executable, mode_t st_mode)
1218{
1219 mode_t xbits = S_IXUSR0000100;
1220
1221 if (executable) {
1222 /* Map read bits to execute bits. */
1223 if (st_mode & S_IRGRP0000040)
1224 xbits |= S_IXGRP0000010;
1225 if (st_mode & S_IROTH0000004)
1226 xbits |= S_IXOTH0000001;
1227 return st_mode | xbits;
1228 }
1229
1230 return (st_mode & ~(S_IXUSR0000100 | S_IXGRP0000010 | S_IXOTH0000001));
1231}
1232
1233/* forward declaration */
1234static const struct got_error *
1235install_blob(struct got_worktree *worktree, const char *ondisk_path,
1236 const char *path, mode_t te_mode, mode_t st_mode,
1237 struct got_blob_object *blob, int restoring_missing_file,
1238 int reverting_versioned_file, int installing_bad_symlink,
1239 int path_is_unversioned, struct got_repository *repo,
1240 got_worktree_checkout_cb progress_cb, void *progress_arg);
1241
1242/*
1243 * This function assumes that the provided symlink target points at a
1244 * safe location in the work tree!
1245 */
1246static const struct got_error *
1247replace_existing_symlink(int *did_something, const char *ondisk_path,
1248 const char *target_path, size_t target_len)
1249{
1250 const struct got_error *err = NULL((void*)0);
1251 ssize_t elen;
1252 char etarget[PATH_MAX1024];
1253 int fd;
1254
1255 *did_something = 0;
1256
1257 /*
1258 * "Bad" symlinks (those pointing outside the work tree or into the
1259 * .got directory) are installed in the work tree as a regular file
1260 * which contains the bad symlink target path.
1261 * The new symlink target has already been checked for safety by our
1262 * caller. If we can successfully open a regular file then we simply
1263 * replace this file with a symlink below.
1264 */
1265 fd = open(ondisk_path, O_RDWR0x0002 | O_EXCL0x0800 | O_NOFOLLOW0x0100);
1266 if (fd == -1) {
1267 if (errno(*__errno()) != ELOOP62)
1268 return got_error_from_errno2("open", ondisk_path);
1269
1270 /* We are updating an existing on-disk symlink. */
1271 elen = readlink(ondisk_path, etarget, sizeof(etarget));
1272 if (elen == -1)
1273 return got_error_from_errno2("readlink", ondisk_path);
1274
1275 if (elen == target_len &&
1276 memcmp(etarget, target_path, target_len) == 0)
1277 return NULL((void*)0); /* nothing to do */
1278 }
1279
1280 *did_something = 1;
1281 err = update_symlink(ondisk_path, target_path, target_len);
1282 if (fd != -1 && close(fd) == -1 && err == NULL((void*)0))
1283 err = got_error_from_errno2("close", ondisk_path);
1284 return err;
1285}
1286
1287static const struct got_error *
1288is_bad_symlink_target(int *is_bad_symlink, const char *target_path,
1289 size_t target_len, const char *ondisk_path, const char *wtroot_path)
1290{
1291 const struct got_error *err = NULL((void*)0);
1292 char canonpath[PATH_MAX1024];
1293 char *path_got = NULL((void*)0);
1294
1295 *is_bad_symlink = 0;
1296
1297 if (target_len >= sizeof(canonpath)) {
1298 *is_bad_symlink = 1;
1299 return NULL((void*)0);
1300 }
1301
1302 /*
1303 * We do not use realpath(3) to resolve the symlink's target
1304 * path because we don't want to resolve symlinks recursively.
1305 * Instead we make the path absolute and then canonicalize it.
1306 * Relative symlink target lookup should begin at the directory
1307 * in which the blob object is being installed.
1308 */
1309 if (!got_path_is_absolute(target_path)) {
1310 char *abspath, *parent;
1311 err = got_path_dirname(&parent, ondisk_path);
1312 if (err)
1313 return err;
1314 if (asprintf(&abspath, "%s/%s", parent, target_path) == -1) {
1315 free(parent);
1316 return got_error_from_errno("asprintf");
1317 }
1318 free(parent);
1319 if (strlen(abspath) >= sizeof(canonpath)) {
1320 err = got_error_path(abspath, GOT_ERR_BAD_PATH4);
1321 free(abspath);
1322 return err;
1323 }
1324 err = got_canonpath(abspath, canonpath, sizeof(canonpath));
1325 free(abspath);
1326 if (err)
1327 return err;
1328 } else {
1329 err = got_canonpath(target_path, canonpath, sizeof(canonpath));
1330 if (err)
1331 return err;
1332 }
1333
1334 /* Only allow symlinks pointing at paths within the work tree. */
1335 if (!got_path_is_child(canonpath, wtroot_path, strlen(wtroot_path))) {
1336 *is_bad_symlink = 1;
1337 return NULL((void*)0);
1338 }
1339
1340 /* Do not allow symlinks pointing into the .got directory. */
1341 if (asprintf(&path_got, "%s/%s", wtroot_path,
1342 GOT_WORKTREE_GOT_DIR".got") == -1)
1343 return got_error_from_errno("asprintf");
1344 if (got_path_is_child(canonpath, path_got, strlen(path_got)))
1345 *is_bad_symlink = 1;
1346
1347 free(path_got);
1348 return NULL((void*)0);
1349}
1350
1351static const struct got_error *
1352install_symlink(int *is_bad_symlink, struct got_worktree *worktree,
1353 const char *ondisk_path, const char *path, struct got_blob_object *blob,
1354 int restoring_missing_file, int reverting_versioned_file,
1355 int path_is_unversioned, struct got_repository *repo,
1356 got_worktree_checkout_cb progress_cb, void *progress_arg)
1357{
1358 const struct got_error *err = NULL((void*)0);
1359 char target_path[PATH_MAX1024];
1360 size_t len, target_len = 0;
1361 char *path_got = NULL((void*)0);
1362 const uint8_t *buf = got_object_blob_get_read_buf(blob);
1363 size_t hdrlen = got_object_blob_get_hdrlen(blob);
1364
1365 *is_bad_symlink = 0;
1366
1367 /*
1368 * Blob object content specifies the target path of the link.
1369 * If a symbolic link cannot be installed we instead create
1370 * a regular file which contains the link target path stored
1371 * in the blob object.
1372 */
1373 do {
1374 err = got_object_blob_read_block(&len, blob);
1375 if (len + target_len >= sizeof(target_path)) {
1376 /* Path too long; install as a regular file. */
1377 *is_bad_symlink = 1;
1378 got_object_blob_rewind(blob);
1379 return install_blob(worktree, ondisk_path, path,
1380 GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004), GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004), blob,
1381 restoring_missing_file, reverting_versioned_file,
1382 1, path_is_unversioned, repo, progress_cb,
1383 progress_arg);
1384 }
1385 if (len > 0) {
1386 /* Skip blob object header first time around. */
1387 memcpy(target_path + target_len, buf + hdrlen,
1388 len - hdrlen);
1389 target_len += len - hdrlen;
1390 hdrlen = 0;
1391 }
1392 } while (len != 0);
1393 target_path[target_len] = '\0';
1394
1395 err = is_bad_symlink_target(is_bad_symlink, target_path, target_len,
1396 ondisk_path, worktree->root_path);
1397 if (err)
1398 return err;
1399
1400 if (*is_bad_symlink) {
1401 /* install as a regular file */
1402 got_object_blob_rewind(blob);
1403 err = install_blob(worktree, ondisk_path, path,
1404 GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004), GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004), blob,
1405 restoring_missing_file, reverting_versioned_file, 1,
1406 path_is_unversioned, repo, progress_cb, progress_arg);
1407 goto done;
1408 }
1409
1410 if (symlink(target_path, ondisk_path) == -1) {
1411 if (errno(*__errno()) == EEXIST17) {
1412 int symlink_replaced;
1413 if (path_is_unversioned) {
1414 err = (*progress_cb)(progress_arg,
1415 GOT_STATUS_UNVERSIONED'?', path);
1416 goto done;
1417 }
1418 err = replace_existing_symlink(&symlink_replaced,
1419 ondisk_path, target_path, target_len);
1420 if (err)
1421 goto done;
1422 if (progress_cb) {
1423 if (symlink_replaced) {
1424 err = (*progress_cb)(progress_arg,
1425 reverting_versioned_file ?
1426 GOT_STATUS_REVERT'R' :
1427 GOT_STATUS_UPDATE'U', path);
1428 } else {
1429 err = (*progress_cb)(progress_arg,
1430 GOT_STATUS_EXISTS'E', path);
1431 }
1432 }
1433 goto done; /* Nothing else to do. */
1434 }
1435
1436 if (errno(*__errno()) == ENOENT2) {
1437 char *parent;
1438 err = got_path_dirname(&parent, ondisk_path);
1439 if (err)
1440 goto done;
1441 err = add_dir_on_disk(worktree, parent);
1442 free(parent);
1443 if (err)
1444 goto done;
1445 /*
1446 * Retry, and fall through to error handling
1447 * below if this second attempt fails.
1448 */
1449 if (symlink(target_path, ondisk_path) != -1) {
1450 err = NULL((void*)0); /* success */
1451 goto done;
1452 }
1453 }
1454
1455 /* Handle errors from first or second creation attempt. */
1456 if (errno(*__errno()) == ENAMETOOLONG63) {
1457 /* bad target path; install as a regular file */
1458 *is_bad_symlink = 1;
1459 got_object_blob_rewind(blob);
1460 err = install_blob(worktree, ondisk_path, path,
1461 GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004), GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004), blob,
1462 restoring_missing_file, reverting_versioned_file, 1,
1463 path_is_unversioned, repo,
1464 progress_cb, progress_arg);
1465 } else if (errno(*__errno()) == ENOTDIR20) {
1466 err = got_error_path(ondisk_path,
1467 GOT_ERR_FILE_OBSTRUCTED31);
1468 } else {
1469 err = got_error_from_errno3("symlink",
1470 target_path, ondisk_path);
1471 }
1472 } else if (progress_cb)
1473 err = (*progress_cb)(progress_arg, reverting_versioned_file ?
1474 GOT_STATUS_REVERT'R' : GOT_STATUS_ADD'A', path);
1475done:
1476 free(path_got);
1477 return err;
1478}
1479
1480static const struct got_error *
1481install_blob(struct got_worktree *worktree, const char *ondisk_path,
1482 const char *path, mode_t te_mode, mode_t st_mode,
1483 struct got_blob_object *blob, int restoring_missing_file,
1484 int reverting_versioned_file, int installing_bad_symlink,
1485 int path_is_unversioned, struct got_repository *repo,
1486 got_worktree_checkout_cb progress_cb, void *progress_arg)
1487{
1488 const struct got_error *err = NULL((void*)0);
1489 int fd = -1;
1490 size_t len, hdrlen;
1491 int update = 0;
1492 char *tmppath = NULL((void*)0);
1493
1494 fd = open(ondisk_path, O_RDWR0x0002 | O_CREAT0x0200 | O_EXCL0x0800 | O_NOFOLLOW0x0100,
1495 GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004));
1496 if (fd == -1) {
1497 if (errno(*__errno()) == ENOENT2) {
1498 char *parent;
1499 err = got_path_dirname(&parent, path);
1500 if (err)
1501 return err;
1502 err = add_dir_on_disk(worktree, parent);
1503 free(parent);
1504 if (err)
1505 return err;
1506 fd = open(ondisk_path,
1507 O_RDWR0x0002 | O_CREAT0x0200 | O_EXCL0x0800 | O_NOFOLLOW0x0100,
1508 GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004));
1509 if (fd == -1)
1510 return got_error_from_errno2("open",
1511 ondisk_path);
1512 } else if (errno(*__errno()) == EEXIST17) {
1513 if (path_is_unversioned) {
1514 err = (*progress_cb)(progress_arg,
1515 GOT_STATUS_UNVERSIONED'?', path);
1516 goto done;
1517 }
1518 if (!(S_ISLNK(st_mode)((st_mode & 0170000) == 0120000) && S_ISREG(te_mode)((te_mode & 0170000) == 0100000)) &&
1519 !S_ISREG(st_mode)((st_mode & 0170000) == 0100000) && !installing_bad_symlink) {
1520 /* TODO file is obstructed; do something */
1521 err = got_error_path(ondisk_path,
1522 GOT_ERR_FILE_OBSTRUCTED31);
1523 goto done;
1524 } else {
1525 err = got_opentemp_named_fd(&tmppath, &fd,
1526 ondisk_path);
1527 if (err)
1528 goto done;
1529 update = 1;
1530 }
1531 } else
1532 return got_error_from_errno2("open", ondisk_path);
1533 }
1534
1535 if (fchmod(fd, get_ondisk_perms(te_mode & S_IXUSR0000100, st_mode)) == -1) {
1536 err = got_error_from_errno2("fchmod",
1537 update ? tmppath : ondisk_path);
1538 goto done;
1539 }
1540
1541 if (progress_cb) {
1542 if (restoring_missing_file)
1543 err = (*progress_cb)(progress_arg, GOT_STATUS_MISSING'!',
1544 path);
1545 else if (reverting_versioned_file)
1546 err = (*progress_cb)(progress_arg, GOT_STATUS_REVERT'R',
1547 path);
1548 else
1549 err = (*progress_cb)(progress_arg,
1550 update ? GOT_STATUS_UPDATE'U' : GOT_STATUS_ADD'A', path);
1551 if (err)
1552 goto done;
1553 }
1554
1555 hdrlen = got_object_blob_get_hdrlen(blob);
1556 do {
1557 const uint8_t *buf = got_object_blob_get_read_buf(blob);
1558 err = got_object_blob_read_block(&len, blob);
1559 if (err)
1560 break;
1561 if (len > 0) {
1562 /* Skip blob object header first time around. */
1563 ssize_t outlen = write(fd, buf + hdrlen, len - hdrlen);
1564 if (outlen == -1) {
1565 err = got_error_from_errno("write");
1566 goto done;
1567 } else if (outlen != len - hdrlen) {
1568 err = got_error(GOT_ERR_IO6);
1569 goto done;
1570 }
1571 hdrlen = 0;
1572 }
1573 } while (len != 0);
1574
1575 if (fsync(fd) != 0) {
1576 err = got_error_from_errno("fsync");
1577 goto done;
1578 }
1579
1580 if (update) {
1581 if (S_ISLNK(st_mode)((st_mode & 0170000) == 0120000) && unlink(ondisk_path) == -1) {
1582 err = got_error_from_errno2("unlink", ondisk_path);
1583 goto done;
1584 }
1585 if (rename(tmppath, ondisk_path) != 0) {
1586 err = got_error_from_errno3("rename", tmppath,
1587 ondisk_path);
1588 goto done;
1589 }
1590 free(tmppath);
1591 tmppath = NULL((void*)0);
1592 }
1593
1594done:
1595 if (fd != -1 && close(fd) == -1 && err == NULL((void*)0))
1596 err = got_error_from_errno("close");
1597 if (tmppath != NULL((void*)0) && unlink(tmppath) == -1 && err == NULL((void*)0))
1598 err = got_error_from_errno2("unlink", tmppath);
1599 free(tmppath);
1600 return err;
1601}
1602
1603/* Upgrade STATUS_MODIFY to STATUS_CONFLICT if a conflict marker is found. */
1604static const struct got_error *
1605get_modified_file_content_status(unsigned char *status, FILE *f)
1606{
1607 const struct got_error *err = NULL((void*)0);
1608 const char *markers[3] = {
1609 GOT_DIFF_CONFLICT_MARKER_BEGIN"<<<<<<<",
1610 GOT_DIFF_CONFLICT_MARKER_SEP"=======",
1611 GOT_DIFF_CONFLICT_MARKER_END">>>>>>>"
1612 };
1613 int i = 0;
1614 char *line = NULL((void*)0);
1615 size_t linesize = 0;
1616 ssize_t linelen;
1617
1618 while (*status == GOT_STATUS_MODIFY'M') {
1619 linelen = getline(&line, &linesize, f);
1620 if (linelen == -1) {
1621 if (feof(f)(!__isthreaded ? (((f)->_flags & 0x0020) != 0) : (feof
)(f))
)
1622 break;
1623 err = got_ferror(f, GOT_ERR_IO6);
1624 break;
1625 }
1626
1627 if (strncmp(line, markers[i], strlen(markers[i])) == 0) {
1628 if (strcmp(markers[i], GOT_DIFF_CONFLICT_MARKER_END">>>>>>>")
1629 == 0)
1630 *status = GOT_STATUS_CONFLICT'C';
1631 else
1632 i++;
1633 }
1634 }
1635 free(line);
1636
1637 return err;
1638}
1639
1640static int
1641xbit_differs(struct got_fileindex_entry *ie, uint16_t st_mode)
1642{
1643 mode_t ie_mode = got_fileindex_perms_to_st(ie);
1644 return ((ie_mode & S_IXUSR0000100) != (st_mode & S_IXUSR0000100));
1645}
1646
1647static int
1648stat_info_differs(struct got_fileindex_entry *ie, struct stat *sb)
1649{
1650 return !(ie->ctime_sec == sb->st_ctim.tv_sec &&
1651 ie->ctime_nsec == sb->st_ctim.tv_nsec &&
1652 ie->mtime_sec == sb->st_mtim.tv_sec &&
1653 ie->mtime_nsec == sb->st_mtim.tv_nsec &&
1654 ie->size == (sb->st_size & 0xffffffff) &&
1655 !xbit_differs(ie, sb->st_mode));
1656}
1657
1658static unsigned char
1659get_staged_status(struct got_fileindex_entry *ie)
1660{
1661 switch (got_fileindex_entry_stage_get(ie)) {
1662 case GOT_FILEIDX_STAGE_ADD2:
1663 return GOT_STATUS_ADD'A';
1664 case GOT_FILEIDX_STAGE_DELETE3:
1665 return GOT_STATUS_DELETE'D';
1666 case GOT_FILEIDX_STAGE_MODIFY1:
1667 return GOT_STATUS_MODIFY'M';
1668 default:
1669 return GOT_STATUS_NO_CHANGE' ';
1670 }
1671}
1672
1673static const struct got_error *
1674get_symlink_modification_status(unsigned char *status,
1675 struct got_fileindex_entry *ie, const char *abspath,
1676 int dirfd, const char *de_name, struct got_blob_object *blob)
1677{
1678 const struct got_error *err = NULL((void*)0);
1679 char target_path[PATH_MAX1024];
1680 char etarget[PATH_MAX1024];
1681 ssize_t elen;
1682 size_t len, target_len = 0;
1683 const uint8_t *buf = got_object_blob_get_read_buf(blob);
1684 size_t hdrlen = got_object_blob_get_hdrlen(blob);
1685
1686 *status = GOT_STATUS_NO_CHANGE' ';
1687
1688 /* Blob object content specifies the target path of the link. */
1689 do {
1690 err = got_object_blob_read_block(&len, blob);
1691 if (err)
1692 return err;
1693 if (len + target_len >= sizeof(target_path)) {
1694 /*
1695 * Should not happen. The blob contents were OK
1696 * when this symlink was installed.
1697 */
1698 return got_error(GOT_ERR_NO_SPACE9);
1699 }
1700 if (len > 0) {
1701 /* Skip blob object header first time around. */
1702 memcpy(target_path + target_len, buf + hdrlen,
1703 len - hdrlen);
1704 target_len += len - hdrlen;
1705 hdrlen = 0;
1706 }
1707 } while (len != 0);
1708 target_path[target_len] = '\0';
1709
1710 if (dirfd != -1) {
1711 elen = readlinkat(dirfd, de_name, etarget, sizeof(etarget));
1712 if (elen == -1)
1713 return got_error_from_errno2("readlinkat", abspath);
1714 } else {
1715 elen = readlink(abspath, etarget, sizeof(etarget));
1716 if (elen == -1)
1717 return got_error_from_errno2("readlink", abspath);
1718 }
1719
1720 if (elen != target_len || memcmp(etarget, target_path, target_len) != 0)
1721 *status = GOT_STATUS_MODIFY'M';
1722
1723 return NULL((void*)0);
1724}
1725
1726static const struct got_error *
1727get_file_status(unsigned char *status, struct stat *sb,
1728 struct got_fileindex_entry *ie, const char *abspath,
1729 int dirfd, const char *de_name, struct got_repository *repo)
1730{
1731 const struct got_error *err = NULL((void*)0);
1732 struct got_object_id id;
1733 size_t hdrlen;
1734 int fd = -1;
1735 FILE *f = NULL((void*)0);
1736 uint8_t fbuf[8192];
1737 struct got_blob_object *blob = NULL((void*)0);
1738 size_t flen, blen;
1739 unsigned char staged_status = get_staged_status(ie);
1740
1741 *status = GOT_STATUS_NO_CHANGE' ';
1742 memset(sb, 0, sizeof(*sb));
1743
1744 /*
1745 * Whenever the caller provides a directory descriptor and a
1746 * directory entry name for the file, use them! This prevents
1747 * race conditions if filesystem paths change beneath our feet.
1748 */
1749 if (dirfd != -1) {
1750 if (fstatat(dirfd, de_name, sb, AT_SYMLINK_NOFOLLOW0x02) == -1) {
1751 if (errno(*__errno()) == ENOENT2) {
1752 if (got_fileindex_entry_has_file_on_disk(ie))
1753 *status = GOT_STATUS_MISSING'!';
1754 else
1755 *status = GOT_STATUS_DELETE'D';
1756 goto done;
1757 }
1758 err = got_error_from_errno2("fstatat", abspath);
1759 goto done;
1760 }
1761 } else {
1762 fd = open(abspath, O_RDONLY0x0000 | O_NOFOLLOW0x0100);
1763 if (fd == -1 && errno(*__errno()) != ENOENT2 && errno(*__errno()) != ELOOP62)
1764 return got_error_from_errno2("open", abspath);
1765 else if (fd == -1 && errno(*__errno()) == ELOOP62) {
1766 if (lstat(abspath, sb) == -1)
1767 return got_error_from_errno2("lstat", abspath);
1768 } else if (fd == -1 || fstat(fd, sb) == -1) {
1769 if (errno(*__errno()) == ENOENT2) {
1770 if (got_fileindex_entry_has_file_on_disk(ie))
1771 *status = GOT_STATUS_MISSING'!';
1772 else
1773 *status = GOT_STATUS_DELETE'D';
1774 goto done;
1775 }
1776 err = got_error_from_errno2("fstat", abspath);
1777 goto done;
1778 }
1779 }
1780
1781 if (!S_ISREG(sb->st_mode)((sb->st_mode & 0170000) == 0100000) && !S_ISLNK(sb->st_mode)((sb->st_mode & 0170000) == 0120000)) {
1782 *status = GOT_STATUS_OBSTRUCTED'~';
1783 goto done;
1784 }
1785
1786 if (!got_fileindex_entry_has_file_on_disk(ie)) {
1787 *status = GOT_STATUS_DELETE'D';
1788 goto done;
1789 } else if (!got_fileindex_entry_has_blob(ie) &&
1790 staged_status != GOT_STATUS_ADD'A') {
1791 *status = GOT_STATUS_ADD'A';
1792 goto done;
1793 }
1794
1795 if (!stat_info_differs(ie, sb))
1796 goto done;
1797
1798 if (S_ISLNK(sb->st_mode)((sb->st_mode & 0170000) == 0120000) &&
1799 got_fileindex_entry_filetype_get(ie) != GOT_FILEIDX_MODE_SYMLINK2) {
1800 *status = GOT_STATUS_MODIFY'M';
1801 goto done;
1802 }
1803
1804 if (staged_status == GOT_STATUS_MODIFY'M' ||
1805 staged_status == GOT_STATUS_ADD'A')
1806 memcpy(id.sha1, ie->staged_blob_sha1, sizeof(id.sha1));
1807 else
1808 memcpy(id.sha1, ie->blob_sha1, sizeof(id.sha1));
1809
1810 err = got_object_open_as_blob(&blob, repo, &id, sizeof(fbuf));
1811 if (err)
1812 goto done;
1813
1814 if (S_ISLNK(sb->st_mode)((sb->st_mode & 0170000) == 0120000)) {
1815 err = get_symlink_modification_status(status, ie,
1816 abspath, dirfd, de_name, blob);
1817 goto done;
1818 }
1819
1820 if (dirfd != -1) {
1821 fd = openat(dirfd, de_name, O_RDONLY0x0000 | O_NOFOLLOW0x0100);
1822 if (fd == -1) {
1823 err = got_error_from_errno2("openat", abspath);
1824 goto done;
1825 }
1826 }
1827
1828 f = fdopen(fd, "r");
1829 if (f == NULL((void*)0)) {
1830 err = got_error_from_errno2("fdopen", abspath);
1831 goto done;
1832 }
1833 fd = -1;
1834 hdrlen = got_object_blob_get_hdrlen(blob);
1835 for (;;) {
1836 const uint8_t *bbuf = got_object_blob_get_read_buf(blob);
1837 err = got_object_blob_read_block(&blen, blob);
1838 if (err)
1839 goto done;
1840 /* Skip length of blob object header first time around. */
1841 flen = fread(fbuf, 1, sizeof(fbuf) - hdrlen, f);
1842 if (flen == 0 && ferror(f)(!__isthreaded ? (((f)->_flags & 0x0040) != 0) : (ferror
)(f))
) {
1843 err = got_error_from_errno("fread");
1844 goto done;
1845 }
1846 if (blen - hdrlen == 0) {
1847 if (flen != 0)
1848 *status = GOT_STATUS_MODIFY'M';
1849 break;
1850 } else if (flen == 0) {
1851 if (blen - hdrlen != 0)
1852 *status = GOT_STATUS_MODIFY'M';
1853 break;
1854 } else if (blen - hdrlen == flen) {
1855 /* Skip blob object header first time around. */
1856 if (memcmp(bbuf + hdrlen, fbuf, flen) != 0) {
1857 *status = GOT_STATUS_MODIFY'M';
1858 break;
1859 }
1860 } else {
1861 *status = GOT_STATUS_MODIFY'M';
1862 break;
1863 }
1864 hdrlen = 0;
1865 }
1866
1867 if (*status == GOT_STATUS_MODIFY'M') {
1868 rewind(f);
1869 err = get_modified_file_content_status(status, f);
1870 } else if (xbit_differs(ie, sb->st_mode))
1871 *status = GOT_STATUS_MODE_CHANGE'm';
1872done:
1873 if (blob)
1874 got_object_blob_close(blob);
1875 if (f != NULL((void*)0) && fclose(f) == EOF(-1) && err == NULL((void*)0))
1876 err = got_error_from_errno2("fclose", abspath);
1877 if (fd != -1 && close(fd) == -1 && err == NULL((void*)0))
1878 err = got_error_from_errno2("close", abspath);
1879 return err;
1880}
1881
1882/*
1883 * Update timestamps in the file index if a file is unmodified and
1884 * we had to run a full content comparison to find out.
1885 */
1886static const struct got_error *
1887sync_timestamps(int wt_fd, const char *path, unsigned char status,
1888 struct got_fileindex_entry *ie, struct stat *sb)
1889{
1890 if (status == GOT_STATUS_NO_CHANGE' ' && stat_info_differs(ie, sb))
1891 return got_fileindex_entry_update(ie, wt_fd, path,
1892 ie->blob_sha1, ie->commit_sha1, 1);
1893
1894 return NULL((void*)0);
1895}
1896
1897static const struct got_error *
1898update_blob(struct got_worktree *worktree,
1899 struct got_fileindex *fileindex, struct got_fileindex_entry *ie,
1900 struct got_tree_entry *te, const char *path,
1901 struct got_repository *repo, got_worktree_checkout_cb progress_cb,
1902 void *progress_arg)
1903{
1904 const struct got_error *err = NULL((void*)0);
1905 struct got_blob_object *blob = NULL((void*)0);
1906 char *ondisk_path;
1907 unsigned char status = GOT_STATUS_NO_CHANGE' ';
1908 struct stat sb;
1909
1910 if (asprintf(&ondisk_path, "%s/%s", worktree->root_path, path) == -1)
1911 return got_error_from_errno("asprintf");
1912
1913 if (ie) {
1914 if (get_staged_status(ie) != GOT_STATUS_NO_CHANGE' ') {
1915 err = got_error_path(ie->path, GOT_ERR_FILE_STAGED101);
1916 goto done;
1917 }
1918 err = get_file_status(&status, &sb, ie, ondisk_path, -1, NULL((void*)0),
1919 repo);
1920 if (err)
1921 goto done;
1922 if (status == GOT_STATUS_MISSING'!' || status == GOT_STATUS_DELETE'D')
1923 sb.st_mode = got_fileindex_perms_to_st(ie);
1924 } else {
1925 sb.st_mode = GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004);
1926 status = GOT_STATUS_UNVERSIONED'?';
1927 }
1928
1929 if (status == GOT_STATUS_OBSTRUCTED'~') {
1930 err = (*progress_cb)(progress_arg, status, path);
1931 goto done;
1932 }
1933 if (status == GOT_STATUS_CONFLICT'C') {
1934 err = (*progress_cb)(progress_arg, GOT_STATUS_CANNOT_UPDATE'#',
1935 path);
1936 goto done;
1937 }
1938
1939 if (ie && status != GOT_STATUS_MISSING'!' && S_ISREG(sb.st_mode)((sb.st_mode & 0170000) == 0100000) &&
1940 (S_ISLNK(te->mode)((te->mode & 0170000) == 0120000) ||
1941 (te->mode & S_IXUSR0000100) == (sb.st_mode & S_IXUSR0000100))) {
1942 /*
1943 * This is a regular file or an installed bad symlink.
1944 * If the file index indicates that this file is already
1945 * up-to-date with respect to the repository we can skip
1946 * updating contents of this file.
1947 */
1948 if (got_fileindex_entry_has_commit(ie) &&
1949 memcmp(ie->commit_sha1, worktree->base_commit_id->sha1,
1950 SHA1_DIGEST_LENGTH20) == 0) {
1951 /* Same commit. */
1952 err = sync_timestamps(worktree->root_fd,
1953 path, status, ie, &sb);
1954 if (err)
1955 goto done;
1956 err = (*progress_cb)(progress_arg, GOT_STATUS_EXISTS'E',
1957 path);
1958 goto done;
1959 }
1960 if (got_fileindex_entry_has_blob(ie) &&
1961 memcmp(ie->blob_sha1, te->id.sha1,
1962 SHA1_DIGEST_LENGTH20) == 0) {
1963 /* Different commit but the same blob. */
1964 err = sync_timestamps(worktree->root_fd,
1965 path, status, ie, &sb);
1966 if (err)
1967 goto done;
1968 err = (*progress_cb)(progress_arg, GOT_STATUS_EXISTS'E',
1969 path);
1970 goto done;
1971 }
1972 }
1973
1974 err = got_object_open_as_blob(&blob, repo, &te->id, 8192);
1975 if (err)
1976 goto done;
1977
1978 if (status == GOT_STATUS_MODIFY'M' || status == GOT_STATUS_ADD'A') {
1979 int update_timestamps;
1980 struct got_blob_object *blob2 = NULL((void*)0);
1981 char *label_orig = NULL((void*)0);
1982 if (got_fileindex_entry_has_blob(ie)) {
1983 struct got_object_id id2;
1984 memcpy(id2.sha1, ie->blob_sha1, SHA1_DIGEST_LENGTH20);
1985 err = got_object_open_as_blob(&blob2, repo, &id2, 8192);
1986 if (err)
1987 goto done;
1988 }
1989 if (got_fileindex_entry_has_commit(ie)) {
1990 char id_str[SHA1_DIGEST_STRING_LENGTH(20 * 2 + 1)];
1991 if (got_sha1_digest_to_str(ie->commit_sha1, id_str,
1992 sizeof(id_str)) == NULL((void*)0)) {
1993 err = got_error_path(id_str,
1994 GOT_ERR_BAD_OBJ_ID_STR23);
1995 goto done;
1996 }
1997 if (asprintf(&label_orig, "%s: commit %s",
1998 GOT_MERGE_LABEL_BASE"3-way merge base", id_str) == -1) {
1999 err = got_error_from_errno("asprintf");
2000 goto done;
2001 }
2002 }
2003 if (S_ISLNK(te->mode)((te->mode & 0170000) == 0120000) && S_ISLNK(sb.st_mode)((sb.st_mode & 0170000) == 0120000)) {
2004 char *link_target;
2005 err = got_object_blob_read_to_str(&link_target, blob);
2006 if (err)
2007 goto done;
2008 err = merge_symlink(worktree, blob2, ondisk_path, path,
2009 label_orig, link_target, worktree->base_commit_id,
2010 repo, progress_cb, progress_arg);
2011 free(link_target);
2012 } else {
2013 err = merge_blob(&update_timestamps, worktree, blob2,
2014 ondisk_path, path, sb.st_mode, label_orig, blob,
2015 worktree->base_commit_id, repo,
2016 progress_cb, progress_arg);
2017 }
2018 free(label_orig);
2019 if (blob2)
2020 got_object_blob_close(blob2);
2021 if (err)
2022 goto done;
2023 /*
2024 * Do not update timestamps of files with local changes.
2025 * Otherwise, a future status walk would treat them as
2026 * unmodified files again.
2027 */
2028 err = got_fileindex_entry_update(ie, worktree->root_fd, path,
2029 blob->id.sha1, worktree->base_commit_id->sha1,
2030 update_timestamps);
2031 } else if (status == GOT_STATUS_MODE_CHANGE'm') {
2032 err = got_fileindex_entry_update(ie, worktree->root_fd, path,
2033 blob->id.sha1, worktree->base_commit_id->sha1, 0);
2034 } else if (status == GOT_STATUS_DELETE'D') {
2035 err = (*progress_cb)(progress_arg, GOT_STATUS_MERGE'G', path);
2036 if (err)
2037 goto done;
2038 err = got_fileindex_entry_update(ie, worktree->root_fd, path,
2039 blob->id.sha1, worktree->base_commit_id->sha1, 0);
2040 if (err)
2041 goto done;
2042 } else {
2043 int is_bad_symlink = 0;
2044 if (S_ISLNK(te->mode)((te->mode & 0170000) == 0120000)) {
2045 err = install_symlink(&is_bad_symlink, worktree,
2046 ondisk_path, path, blob,
2047 status == GOT_STATUS_MISSING'!', 0,
2048 status == GOT_STATUS_UNVERSIONED'?', repo,
2049 progress_cb, progress_arg);
2050 } else {
2051 err = install_blob(worktree, ondisk_path, path,
2052 te->mode, sb.st_mode, blob,
2053 status == GOT_STATUS_MISSING'!', 0, 0,
2054 status == GOT_STATUS_UNVERSIONED'?', repo,
2055 progress_cb, progress_arg);
2056 }
2057 if (err)
2058 goto done;
2059
2060 if (ie) {
2061 err = got_fileindex_entry_update(ie,
2062 worktree->root_fd, path, blob->id.sha1,
2063 worktree->base_commit_id->sha1, 1);
2064 } else {
2065 err = create_fileindex_entry(&ie, fileindex,
2066 worktree->base_commit_id, worktree->root_fd, path,
2067 &blob->id);
2068 }
2069 if (err)
2070 goto done;
2071
2072 if (is_bad_symlink) {
2073 got_fileindex_entry_filetype_set(ie,
2074 GOT_FILEIDX_MODE_BAD_SYMLINK3);
2075 }
2076 }
2077 got_object_blob_close(blob);
2078done:
2079 free(ondisk_path);
2080 return err;
2081}
2082
2083static const struct got_error *
2084remove_ondisk_file(const char *root_path, const char *path)
2085{
2086 const struct got_error *err = NULL((void*)0);
2087 char *ondisk_path = NULL((void*)0);
2088
2089 if (asprintf(&ondisk_path, "%s/%s", root_path, path) == -1)
2090 return got_error_from_errno("asprintf");
2091
2092 if (unlink(ondisk_path) == -1) {
2093 if (errno(*__errno()) != ENOENT2)
2094 err = got_error_from_errno2("unlink", ondisk_path);
2095 } else {
2096 size_t root_len = strlen(root_path);
2097 do {
2098 char *parent;
2099 err = got_path_dirname(&parent, ondisk_path);
2100 if (err)
2101 break;
2102 free(ondisk_path);
2103 ondisk_path = parent;
2104 if (rmdir(ondisk_path) == -1) {
2105 if (errno(*__errno()) != ENOTEMPTY66)
2106 err = got_error_from_errno2("rmdir",
2107 ondisk_path);
2108 break;
2109 }
2110 } while (got_path_cmp(ondisk_path, root_path,
2111 strlen(ondisk_path), root_len) != 0);
2112 }
2113 free(ondisk_path);
2114 return err;
2115}
2116
2117static const struct got_error *
2118delete_blob(struct got_worktree *worktree, struct got_fileindex *fileindex,
2119 struct got_fileindex_entry *ie, struct got_repository *repo,
2120 got_worktree_checkout_cb progress_cb, void *progress_arg)
2121{
2122 const struct got_error *err = NULL((void*)0);
2123 unsigned char status;
2124 struct stat sb;
2125 char *ondisk_path;
2126
2127 if (get_staged_status(ie) != GOT_STATUS_NO_CHANGE' ')
2128 return got_error_path(ie->path, GOT_ERR_FILE_STAGED101);
2129
2130 if (asprintf(&ondisk_path, "%s/%s", worktree->root_path, ie->path)
2131 == -1)
2132 return got_error_from_errno("asprintf");
2133
2134 err = get_file_status(&status, &sb, ie, ondisk_path, -1, NULL((void*)0), repo);
2135 if (err)
2136 goto done;
2137
2138 if (S_ISLNK(sb.st_mode)((sb.st_mode & 0170000) == 0120000) && status != GOT_STATUS_NO_CHANGE' ') {
2139 char ondisk_target[PATH_MAX1024];
2140 ssize_t ondisk_len = readlink(ondisk_path, ondisk_target,
2141 sizeof(ondisk_target));
2142 if (ondisk_len == -1) {
2143 err = got_error_from_errno2("readlink", ondisk_path);
2144 goto done;
2145 }
2146 ondisk_target[ondisk_len] = '\0';
2147 err = install_symlink_conflict(NULL((void*)0), worktree->base_commit_id,
2148 NULL((void*)0), NULL((void*)0), /* XXX pass common ancestor info? */
2149 ondisk_target, ondisk_path);
2150 if (err)
2151 goto done;
2152 err = (*progress_cb)(progress_arg, GOT_STATUS_CONFLICT'C',
2153 ie->path);
2154 goto done;
2155 }
2156
2157 if (status == GOT_STATUS_MODIFY'M' || status == GOT_STATUS_CONFLICT'C' ||
2158 status == GOT_STATUS_ADD'A') {
2159 err = (*progress_cb)(progress_arg, GOT_STATUS_MERGE'G', ie->path);
2160 if (err)
2161 goto done;
2162 /*
2163 * Preserve the working file and change the deleted blob's
2164 * entry into a schedule-add entry.
2165 */
2166 err = got_fileindex_entry_update(ie, worktree->root_fd,
2167 ie->path, NULL((void*)0), NULL((void*)0), 0);
2168 } else {
2169 err = (*progress_cb)(progress_arg, GOT_STATUS_DELETE'D', ie->path);
2170 if (err)
2171 goto done;
2172 if (status == GOT_STATUS_NO_CHANGE' ') {
2173 err = remove_ondisk_file(worktree->root_path, ie->path);
2174 if (err)
2175 goto done;
2176 }
2177 got_fileindex_entry_remove(fileindex, ie);
2178 }
2179done:
2180 free(ondisk_path);
2181 return err;
2182}
2183
2184struct diff_cb_arg {
2185 struct got_fileindex *fileindex;
2186 struct got_worktree *worktree;
2187 struct got_repository *repo;
2188 got_worktree_checkout_cb progress_cb;
2189 void *progress_arg;
2190 got_cancel_cb cancel_cb;
2191 void *cancel_arg;
2192};
2193
2194static const struct got_error *
2195diff_old_new(void *arg, struct got_fileindex_entry *ie,
2196 struct got_tree_entry *te, const char *parent_path)
2197{
2198 struct diff_cb_arg *a = arg;
2199
2200 if (a->cancel_cb && a->cancel_cb(a->cancel_arg))
2201 return got_error(GOT_ERR_CANCELLED49);
2202
2203 return update_blob(a->worktree, a->fileindex, ie, te,
2204 ie->path, a->repo, a->progress_cb, a->progress_arg);
2205}
2206
2207static const struct got_error *
2208diff_old(void *arg, struct got_fileindex_entry *ie, const char *parent_path)
2209{
2210 struct diff_cb_arg *a = arg;
2211
2212 if (a->cancel_cb && a->cancel_cb(a->cancel_arg))
2213 return got_error(GOT_ERR_CANCELLED49);
2214
2215 return delete_blob(a->worktree, a->fileindex, ie,
2216 a->repo, a->progress_cb, a->progress_arg);
2217}
2218
2219static const struct got_error *
2220diff_new(void *arg, struct got_tree_entry *te, const char *parent_path)
2221{
2222 struct diff_cb_arg *a = arg;
2223 const struct got_error *err;
2224 char *path;
2225
2226 if (a->cancel_cb && a->cancel_cb(a->cancel_arg))
2227 return got_error(GOT_ERR_CANCELLED49);
2228
2229 if (got_object_tree_entry_is_submodule(te))
2230 return NULL((void*)0);
2231
2232 if (asprintf(&path, "%s%s%s", parent_path,
2233 parent_path[0] ? "/" : "", te->name)
2234 == -1)
2235 return got_error_from_errno("asprintf");
2236
2237 if (S_ISDIR(te->mode)((te->mode & 0170000) == 0040000))
2238 err = add_dir_on_disk(a->worktree, path);
2239 else
2240 err = update_blob(a->worktree, a->fileindex, NULL((void*)0), te, path,
2241 a->repo, a->progress_cb, a->progress_arg);
2242
2243 free(path);
2244 return err;
2245}
2246
2247const struct got_error *
2248got_worktree_get_uuid(char **uuidstr, struct got_worktree *worktree)
2249{
2250 uint32_t uuid_status;
2251
2252 uuid_to_string(&worktree->uuid, uuidstr, &uuid_status);
2253 if (uuid_status != uuid_s_ok0) {
2254 *uuidstr = NULL((void*)0);
2255 return got_error_uuid(uuid_status, "uuid_to_string");
2256 }
2257
2258 return NULL((void*)0);
2259}
2260
2261static const struct got_error *
2262get_ref_name(char **refname, struct got_worktree *worktree, const char *prefix)
2263{
2264 const struct got_error *err = NULL((void*)0);
2265 char *uuidstr = NULL((void*)0);
2266
2267 *refname = NULL((void*)0);
2268
2269 err = got_worktree_get_uuid(&uuidstr, worktree);
2270 if (err)
2271 return err;
2272
2273 if (asprintf(refname, "%s-%s", prefix, uuidstr) == -1) {
2274 err = got_error_from_errno("asprintf");
2275 *refname = NULL((void*)0);
2276 }
2277 free(uuidstr);
2278 return err;
2279}
2280
2281const struct got_error *
2282got_worktree_get_base_ref_name(char **refname, struct got_worktree *worktree)
2283{
2284 return get_ref_name(refname, worktree, GOT_WORKTREE_BASE_REF_PREFIX"refs/got/worktree/base");
2285}
2286
2287static const struct got_error *
2288get_rebase_tmp_ref_name(char **refname, struct got_worktree *worktree)
2289{
2290 return get_ref_name(refname, worktree,
2291 GOT_WORKTREE_REBASE_TMP_REF_PREFIX"refs/got/worktree/rebase/tmp");
2292}
2293
2294static const struct got_error *
2295get_newbase_symref_name(char **refname, struct got_worktree *worktree)
2296{
2297 return get_ref_name(refname, worktree, GOT_WORKTREE_NEWBASE_REF_PREFIX"refs/got/worktree/rebase/newbase");
2298}
2299
2300static const struct got_error *
2301get_rebase_branch_symref_name(char **refname, struct got_worktree *worktree)
2302{
2303 return get_ref_name(refname, worktree,
2304 GOT_WORKTREE_REBASE_BRANCH_REF_PREFIX"refs/got/worktree/rebase/branch");
2305}
2306
2307static const struct got_error *
2308get_rebase_commit_ref_name(char **refname, struct got_worktree *worktree)
2309{
2310 return get_ref_name(refname, worktree,
2311 GOT_WORKTREE_REBASE_COMMIT_REF_PREFIX"refs/got/worktree/rebase/commit");
2312}
2313
2314static const struct got_error *
2315get_histedit_tmp_ref_name(char **refname, struct got_worktree *worktree)
2316{
2317 return get_ref_name(refname, worktree,
2318 GOT_WORKTREE_HISTEDIT_TMP_REF_PREFIX"refs/got/worktree/histedit/tmp");
2319}
2320
2321static const struct got_error *
2322get_histedit_branch_symref_name(char **refname, struct got_worktree *worktree)
2323{
2324 return get_ref_name(refname, worktree,
2325 GOT_WORKTREE_HISTEDIT_BRANCH_REF_PREFIX"refs/got/worktree/histedit/branch");
2326}
2327
2328static const struct got_error *
2329get_histedit_base_commit_ref_name(char **refname, struct got_worktree *worktree)
2330{
2331 return get_ref_name(refname, worktree,
2332 GOT_WORKTREE_HISTEDIT_BASE_COMMIT_REF_PREFIX"refs/got/worktree/histedit/base-commit");
2333}
2334
2335static const struct got_error *
2336get_histedit_commit_ref_name(char **refname, struct got_worktree *worktree)
2337{
2338 return get_ref_name(refname, worktree,
2339 GOT_WORKTREE_HISTEDIT_COMMIT_REF_PREFIX"refs/got/worktree/histedit/commit");
2340}
2341
2342const struct got_error *
2343got_worktree_get_histedit_script_path(char **path,
2344 struct got_worktree *worktree)
2345{
2346 if (asprintf(path, "%s/%s/%s", worktree->root_path,
2347 GOT_WORKTREE_GOT_DIR".got", GOT_WORKTREE_HISTEDIT_SCRIPT"histedit-script") == -1) {
2348 *path = NULL((void*)0);
2349 return got_error_from_errno("asprintf");
2350 }
2351 return NULL((void*)0);
2352}
2353
2354/*
2355 * Prevent Git's garbage collector from deleting our base commit by
2356 * setting a reference to our base commit's ID.
2357 */
2358static const struct got_error *
2359ref_base_commit(struct got_worktree *worktree, struct got_repository *repo)
2360{
2361 const struct got_error *err = NULL((void*)0);
2362 struct got_reference *ref = NULL((void*)0);
2363 char *refname;
2364
2365 err = got_worktree_get_base_ref_name(&refname, worktree);
2366 if (err)
2367 return err;
2368
2369 err = got_ref_alloc(&ref, refname, worktree->base_commit_id);
2370 if (err)
2371 goto done;
2372
2373 err = got_ref_write(ref, repo);
2374done:
2375 free(refname);
2376 if (ref)
2377 got_ref_close(ref);
2378 return err;
2379}
2380
2381static const struct got_error *
2382get_fileindex_path(char **fileindex_path, struct got_worktree *worktree)
2383{
2384 const struct got_error *err = NULL((void*)0);
2385
2386 if (asprintf(fileindex_path, "%s/%s/%s", worktree->root_path,
2387 GOT_WORKTREE_GOT_DIR".got", GOT_WORKTREE_FILE_INDEX"file-index") == -1) {
2388 err = got_error_from_errno("asprintf");
2389 *fileindex_path = NULL((void*)0);
2390 }
2391 return err;
2392}
2393
2394
2395static const struct got_error *
2396open_fileindex(struct got_fileindex **fileindex, char **fileindex_path,
2397 struct got_worktree *worktree)
2398{
2399 const struct got_error *err = NULL((void*)0);
2400 FILE *index = NULL((void*)0);
2401
2402 *fileindex_path = NULL((void*)0);
2403 *fileindex = got_fileindex_alloc();
2404 if (*fileindex == NULL((void*)0))
2405 return got_error_from_errno("got_fileindex_alloc");
2406
2407 err = get_fileindex_path(fileindex_path, worktree);
2408 if (err)
2409 goto done;
2410
2411 index = fopen(*fileindex_path, "rb");
2412 if (index == NULL((void*)0)) {
2413 if (errno(*__errno()) != ENOENT2)
2414 err = got_error_from_errno2("fopen", *fileindex_path);
2415 } else {
2416 err = got_fileindex_read(*fileindex, index);
2417 if (fclose(index) == EOF(-1) && err == NULL((void*)0))
2418 err = got_error_from_errno("fclose");
2419 }
2420done:
2421 if (err) {
2422 free(*fileindex_path);
2423 *fileindex_path = NULL((void*)0);
2424 got_fileindex_free(*fileindex);
2425 *fileindex = NULL((void*)0);
2426 }
2427 return err;
2428}
2429
2430struct bump_base_commit_id_arg {
2431 struct got_object_id *base_commit_id;
2432 const char *path;
2433 size_t path_len;
2434 const char *entry_name;
2435 got_worktree_checkout_cb progress_cb;
2436 void *progress_arg;
2437};
2438
2439/* Bump base commit ID of all files within an updated part of the work tree. */
2440static const struct got_error *
2441bump_base_commit_id(void *arg, struct got_fileindex_entry *ie)
2442{
2443 const struct got_error *err;
2444 struct bump_base_commit_id_arg *a = arg;
2445
2446 if (a->entry_name) {
2447 if (strcmp(ie->path, a->path) != 0)
2448 return NULL((void*)0);
2449 } else if (!got_path_is_child(ie->path, a->path, a->path_len))
2450 return NULL((void*)0);
2451
2452 if (memcmp(ie->commit_sha1, a->base_commit_id->sha1,
2453 SHA1_DIGEST_LENGTH20) == 0)
2454 return NULL((void*)0);
2455
2456 if (a->progress_cb) {
2457 err = (*a->progress_cb)(a->progress_arg, GOT_STATUS_BUMP_BASE'b',
2458 ie->path);
2459 if (err)
2460 return err;
2461 }
2462 memcpy(ie->commit_sha1, a->base_commit_id->sha1, SHA1_DIGEST_LENGTH20);
2463 return NULL((void*)0);
2464}
2465
2466static const struct got_error *
2467bump_base_commit_id_everywhere(struct got_worktree *worktree,
2468 struct got_fileindex *fileindex,
2469 got_worktree_checkout_cb progress_cb, void *progress_arg)
2470{
2471 struct bump_base_commit_id_arg bbc_arg;
2472
2473 bbc_arg.base_commit_id = worktree->base_commit_id;
2474 bbc_arg.entry_name = NULL((void*)0);
2475 bbc_arg.path = "";
2476 bbc_arg.path_len = 0;
2477 bbc_arg.progress_cb = progress_cb;
2478 bbc_arg.progress_arg = progress_arg;
2479
2480 return got_fileindex_for_each_entry_safe(fileindex,
2481 bump_base_commit_id, &bbc_arg);
2482}
2483
2484static const struct got_error *
2485sync_fileindex(struct got_fileindex *fileindex, const char *fileindex_path)
2486{
2487 const struct got_error *err = NULL((void*)0);
2488 char *new_fileindex_path = NULL((void*)0);
2489 FILE *new_index = NULL((void*)0);
2490 struct timespec timeout;
2491
2492 err = got_opentemp_named(&new_fileindex_path, &new_index,
2493 fileindex_path);
2494 if (err)
2495 goto done;
2496
2497 err = got_fileindex_write(fileindex, new_index);
2498 if (err)
2499 goto done;
2500
2501 if (rename(new_fileindex_path, fileindex_path) != 0) {
2502 err = got_error_from_errno3("rename", new_fileindex_path,
2503 fileindex_path);
2504 unlink(new_fileindex_path);
2505 }
2506
2507 /*
2508 * Sleep for a short amount of time to ensure that files modified after
2509 * this program exits have a different time stamp from the one which
2510 * was recorded in the file index.
2511 */
2512 timeout.tv_sec = 0;
2513 timeout.tv_nsec = 1;
2514 nanosleep(&timeout, NULL((void*)0));
2515done:
2516 if (new_index)
2517 fclose(new_index);
2518 free(new_fileindex_path);
2519 return err;
2520}
2521
2522static const struct got_error *
2523find_tree_entry_for_checkout(int *entry_type, char **tree_relpath,
2524 struct got_object_id **tree_id, const char *wt_relpath,
2525 struct got_worktree *worktree, struct got_repository *repo)
2526{
2527 const struct got_error *err = NULL((void*)0);
2528 struct got_object_id *id = NULL((void*)0);
2529 char *in_repo_path = NULL((void*)0);
2530 int is_root_wt = got_path_is_root_dir(worktree->path_prefix);
2531
2532 *entry_type = GOT_OBJ_TYPE_ANY0;
2533 *tree_relpath = NULL((void*)0);
2534 *tree_id = NULL((void*)0);
2535
2536 if (wt_relpath[0] == '\0') {
2537 /* Check out all files within the work tree. */
2538 *entry_type = GOT_OBJ_TYPE_TREE2;
2539 *tree_relpath = strdup("");
2540 if (*tree_relpath == NULL((void*)0)) {
2541 err = got_error_from_errno("strdup");
2542 goto done;
2543 }
2544 err = got_object_id_by_path(tree_id, repo,
2545 worktree->base_commit_id, worktree->path_prefix);
2546 if (err)
2547 goto done;
2548 return NULL((void*)0);
2549 }
2550
2551 /* Check out a subset of files in the work tree. */
2552
2553 if (asprintf(&in_repo_path, "%s%s%s", worktree->path_prefix,
2554 is_root_wt ? "" : "/", wt_relpath) == -1) {
2555 err = got_error_from_errno("asprintf");
2556 goto done;
2557 }
2558
2559 err = got_object_id_by_path(&id, repo, worktree->base_commit_id,
2560 in_repo_path);
2561 if (err)
2562 goto done;
2563
2564 free(in_repo_path);
2565 in_repo_path = NULL((void*)0);
2566
2567 err = got_object_get_type(entry_type, repo, id);
2568 if (err)
2569 goto done;
2570
2571 if (*entry_type == GOT_OBJ_TYPE_BLOB3) {
2572 /* Check out a single file. */
2573 if (strchr(wt_relpath, '/') == NULL((void*)0)) {
2574 /* Check out a single file in work tree's root dir. */
2575 in_repo_path = strdup(worktree->path_prefix);
2576 if (in_repo_path == NULL((void*)0)) {
2577 err = got_error_from_errno("strdup");
2578 goto done;
2579 }
2580 *tree_relpath = strdup("");
2581 if (*tree_relpath == NULL((void*)0)) {
2582 err = got_error_from_errno("strdup");
2583 goto done;
2584 }
2585 } else {
2586 /* Check out a single file in a subdirectory. */
2587 err = got_path_dirname(tree_relpath, wt_relpath);
2588 if (err)
2589 return err;
2590 if (asprintf(&in_repo_path, "%s%s%s",
2591 worktree->path_prefix, is_root_wt ? "" : "/",
2592 *tree_relpath) == -1) {
2593 err = got_error_from_errno("asprintf");
2594 goto done;
2595 }
2596 }
2597 err = got_object_id_by_path(tree_id, repo,
2598 worktree->base_commit_id, in_repo_path);
2599 } else {
2600 /* Check out all files within a subdirectory. */
2601 *tree_id = got_object_id_dup(id);
2602 if (*tree_id == NULL((void*)0)) {
2603 err = got_error_from_errno("got_object_id_dup");
2604 goto done;
2605 }
2606 *tree_relpath = strdup(wt_relpath);
2607 if (*tree_relpath == NULL((void*)0)) {
2608 err = got_error_from_errno("strdup");
2609 goto done;
2610 }
2611 }
2612done:
2613 free(id);
2614 free(in_repo_path);
2615 if (err) {
2616 *entry_type = GOT_OBJ_TYPE_ANY0;
2617 free(*tree_relpath);
2618 *tree_relpath = NULL((void*)0);
2619 free(*tree_id);
2620 *tree_id = NULL((void*)0);
2621 }
2622 return err;
2623}
2624
2625static const struct got_error *
2626checkout_files(struct got_worktree *worktree, struct got_fileindex *fileindex,
2627 const char *relpath, struct got_object_id *tree_id, const char *entry_name,
2628 struct got_repository *repo, got_worktree_checkout_cb progress_cb,
2629 void *progress_arg, got_cancel_cb cancel_cb, void *cancel_arg)
2630{
2631 const struct got_error *err = NULL((void*)0);
2632 struct got_commit_object *commit = NULL((void*)0);
2633 struct got_tree_object *tree = NULL((void*)0);
2634 struct got_fileindex_diff_tree_cb diff_cb;
2635 struct diff_cb_arg arg;
2636
2637 err = ref_base_commit(worktree, repo);
2638 if (err) {
2639 if (!(err->code == GOT_ERR_ERRNO1 &&
2640 (errno(*__errno()) == EACCES13 || errno(*__errno()) == EROFS30)))
2641 goto done;
2642 err = (*progress_cb)(progress_arg,
2643 GOT_STATUS_BASE_REF_ERR'B', worktree->root_path);
2644 if (err)
2645 return err;
2646 }
2647
2648 err = got_object_open_as_commit(&commit, repo,
2649 worktree->base_commit_id);
2650 if (err)
2651 goto done;
2652
2653 err = got_object_open_as_tree(&tree, repo, tree_id);
2654 if (err)
2655 goto done;
2656
2657 if (entry_name &&
2658 got_object_tree_find_entry(tree, entry_name) == NULL((void*)0)) {
2659 err = got_error_path(entry_name, GOT_ERR_NO_TREE_ENTRY50);
2660 goto done;
2661 }
2662
2663 diff_cb.diff_old_new = diff_old_new;
2664 diff_cb.diff_old = diff_old;
2665 diff_cb.diff_new = diff_new;
2666 arg.fileindex = fileindex;
2667 arg.worktree = worktree;
2668 arg.repo = repo;
2669 arg.progress_cb = progress_cb;
2670 arg.progress_arg = progress_arg;
2671 arg.cancel_cb = cancel_cb;
2672 arg.cancel_arg = cancel_arg;
2673 err = got_fileindex_diff_tree(fileindex, tree, relpath,
2674 entry_name, repo, &diff_cb, &arg);
2675done:
2676 if (tree)
2677 got_object_tree_close(tree);
2678 if (commit)
2679 got_object_commit_close(commit);
2680 return err;
2681}
2682
2683const struct got_error *
2684got_worktree_checkout_files(struct got_worktree *worktree,
2685 struct got_pathlist_head *paths, struct got_repository *repo,
2686 got_worktree_checkout_cb progress_cb, void *progress_arg,
2687 got_cancel_cb cancel_cb, void *cancel_arg)
2688{
2689 const struct got_error *err = NULL((void*)0), *sync_err, *unlockerr;
2690 struct got_commit_object *commit = NULL((void*)0);
2691 struct got_tree_object *tree = NULL((void*)0);
2692 struct got_fileindex *fileindex = NULL((void*)0);
2693 char *fileindex_path = NULL((void*)0);
2694 struct got_pathlist_entry *pe;
2695 struct tree_path_data {
2696 SIMPLEQ_ENTRY(tree_path_data)struct { struct tree_path_data *sqe_next; } entry;
2697 struct got_object_id *tree_id;
2698 int entry_type;
2699 char *relpath;
2700 char *entry_name;
2701 } *tpd = NULL((void*)0);
2702 SIMPLEQ_HEAD(tree_paths, tree_path_data)struct tree_paths { struct tree_path_data *sqh_first; struct tree_path_data
**sqh_last; }
tree_paths;
2703
2704 SIMPLEQ_INIT(&tree_paths)do { (&tree_paths)->sqh_first = ((void*)0); (&tree_paths
)->sqh_last = &(&tree_paths)->sqh_first; } while
(0)
;
2705
2706 err = lock_worktree(worktree, LOCK_EX0x02);
2707 if (err)
2708 return err;
2709
2710 /* Map all specified paths to in-repository trees. */
2711 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
2712 tpd = malloc(sizeof(*tpd));
2713 if (tpd == NULL((void*)0)) {
2714 err = got_error_from_errno("malloc");
2715 goto done;
2716 }
2717
2718 err = find_tree_entry_for_checkout(&tpd->entry_type,
2719 &tpd->relpath, &tpd->tree_id, pe->path, worktree, repo);
2720 if (err) {
2721 free(tpd);
2722 goto done;
2723 }
2724
2725 if (tpd->entry_type == GOT_OBJ_TYPE_BLOB3) {
2726 err = got_path_basename(&tpd->entry_name, pe->path);
2727 if (err) {
2728 free(tpd->relpath);
2729 free(tpd->tree_id);
2730 free(tpd);
2731 goto done;
2732 }
2733 } else
2734 tpd->entry_name = NULL((void*)0);
2735
2736 SIMPLEQ_INSERT_TAIL(&tree_paths, tpd, entry)do { (tpd)->entry.sqe_next = ((void*)0); *(&tree_paths
)->sqh_last = (tpd); (&tree_paths)->sqh_last = &
(tpd)->entry.sqe_next; } while (0)
;
2737 }
2738
2739 /*
2740 * Read the file index.
2741 * Checking out files is supposed to be an idempotent operation.
2742 * If the on-disk file index is incomplete we will try to complete it.
2743 */
2744 err = open_fileindex(&fileindex, &fileindex_path, worktree);
2745 if (err)
2746 goto done;
2747
2748 tpd = SIMPLEQ_FIRST(&tree_paths)((&tree_paths)->sqh_first);
2749 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
2750 struct bump_base_commit_id_arg bbc_arg;
2751
2752 err = checkout_files(worktree, fileindex, tpd->relpath,
2753 tpd->tree_id, tpd->entry_name, repo,
2754 progress_cb, progress_arg, cancel_cb, cancel_arg);
2755 if (err)
2756 break;
2757
2758 bbc_arg.base_commit_id = worktree->base_commit_id;
2759 bbc_arg.entry_name = tpd->entry_name;
2760 bbc_arg.path = pe->path;
2761 bbc_arg.path_len = pe->path_len;
2762 bbc_arg.progress_cb = progress_cb;
2763 bbc_arg.progress_arg = progress_arg;
2764 err = got_fileindex_for_each_entry_safe(fileindex,
2765 bump_base_commit_id, &bbc_arg);
2766 if (err)
2767 break;
2768
2769 tpd = SIMPLEQ_NEXT(tpd, entry)((tpd)->entry.sqe_next);
2770 }
2771 sync_err = sync_fileindex(fileindex, fileindex_path);
2772 if (sync_err && err == NULL((void*)0))
2773 err = sync_err;
2774done:
2775 free(fileindex_path);
2776 if (tree)
2777 got_object_tree_close(tree);
2778 if (commit)
2779 got_object_commit_close(commit);
2780 if (fileindex)
2781 got_fileindex_free(fileindex);
2782 while (!SIMPLEQ_EMPTY(&tree_paths)(((&tree_paths)->sqh_first) == ((void*)0))) {
2783 tpd = SIMPLEQ_FIRST(&tree_paths)((&tree_paths)->sqh_first);
2784 SIMPLEQ_REMOVE_HEAD(&tree_paths, entry)do { if (((&tree_paths)->sqh_first = (&tree_paths)
->sqh_first->entry.sqe_next) == ((void*)0)) (&tree_paths
)->sqh_last = &(&tree_paths)->sqh_first; } while
(0)
;
2785 free(tpd->relpath);
2786 free(tpd->tree_id);
2787 free(tpd);
2788 }
2789 unlockerr = lock_worktree(worktree, LOCK_SH0x01);
2790 if (unlockerr && err == NULL((void*)0))
2791 err = unlockerr;
2792 return err;
2793}
2794
2795struct merge_file_cb_arg {
2796 struct got_worktree *worktree;
2797 struct got_fileindex *fileindex;
2798 got_worktree_checkout_cb progress_cb;
2799 void *progress_arg;
2800 got_cancel_cb cancel_cb;
2801 void *cancel_arg;
2802 const char *label_orig;
2803 struct got_object_id *commit_id2;
2804};
2805
2806static const struct got_error *
2807merge_file_cb(void *arg, struct got_blob_object *blob1,
2808 struct got_blob_object *blob2, struct got_object_id *id1,
2809 struct got_object_id *id2, const char *path1, const char *path2,
2810 mode_t mode1, mode_t mode2, struct got_repository *repo)
2811{
2812 static const struct got_error *err = NULL((void*)0);
2813 struct merge_file_cb_arg *a = arg;
2814 struct got_fileindex_entry *ie;
2815 char *ondisk_path = NULL((void*)0);
2816 struct stat sb;
2817 unsigned char status;
2818 int local_changes_subsumed;
2819
2820 if (blob1 && blob2) {
2821 ie = got_fileindex_entry_get(a->fileindex, path2,
2822 strlen(path2));
2823 if (ie == NULL((void*)0))
2824 return (*a->progress_cb)(a->progress_arg,
2825 GOT_STATUS_MISSING'!', path2);
2826
2827 if (asprintf(&ondisk_path, "%s/%s", a->worktree->root_path,
2828 path2) == -1)
2829 return got_error_from_errno("asprintf");
2830
2831 err = get_file_status(&status, &sb, ie, ondisk_path, -1, NULL((void*)0),
2832 repo);
2833 if (err)
2834 goto done;
2835
2836 if (status == GOT_STATUS_DELETE'D') {
2837 err = (*a->progress_cb)(a->progress_arg,
2838 GOT_STATUS_MERGE'G', path2);
2839 goto done;
2840 }
2841 if (status != GOT_STATUS_NO_CHANGE' ' &&
2842 status != GOT_STATUS_MODIFY'M' &&
2843 status != GOT_STATUS_CONFLICT'C' &&
2844 status != GOT_STATUS_ADD'A') {
2845 err = (*a->progress_cb)(a->progress_arg, status, path2);
2846 goto done;
2847 }
2848
2849 if (S_ISLNK(mode1)((mode1 & 0170000) == 0120000) && S_ISLNK(mode2)((mode2 & 0170000) == 0120000)) {
2850 char *link_target2;
2851 err = got_object_blob_read_to_str(&link_target2, blob2);
2852 if (err)
2853 goto done;
2854 err = merge_symlink(a->worktree, blob1, ondisk_path,
2855 path2, a->label_orig, link_target2, a->commit_id2,
2856 repo, a->progress_cb, a->progress_arg);
2857 free(link_target2);
2858 } else {
2859 err = merge_blob(&local_changes_subsumed, a->worktree,
2860 blob1, ondisk_path, path2, sb.st_mode,
2861 a->label_orig, blob2, a->commit_id2, repo,
2862 a->progress_cb, a->progress_arg);
2863 }
2864 } else if (blob1) {
2865 ie = got_fileindex_entry_get(a->fileindex, path1,
2866 strlen(path1));
2867 if (ie == NULL((void*)0))
2868 return (*a->progress_cb)(a->progress_arg,
2869 GOT_STATUS_MISSING'!', path1);
2870
2871 if (asprintf(&ondisk_path, "%s/%s", a->worktree->root_path,
2872 path1) == -1)
2873 return got_error_from_errno("asprintf");
2874
2875 err = get_file_status(&status, &sb, ie, ondisk_path, -1, NULL((void*)0),
2876 repo);
2877 if (err)
2878 goto done;
2879
2880 switch (status) {
2881 case GOT_STATUS_NO_CHANGE' ':
2882 err = (*a->progress_cb)(a->progress_arg,
2883 GOT_STATUS_DELETE'D', path1);
2884 if (err)
2885 goto done;
2886 err = remove_ondisk_file(a->worktree->root_path, path1);
2887 if (err)
2888 goto done;
2889 if (ie)
2890 got_fileindex_entry_mark_deleted_from_disk(ie);
2891 break;
2892 case GOT_STATUS_DELETE'D':
2893 case GOT_STATUS_MISSING'!':
2894 err = (*a->progress_cb)(a->progress_arg,
2895 GOT_STATUS_DELETE'D', path1);
2896 if (err)
2897 goto done;
2898 if (ie)
2899 got_fileindex_entry_mark_deleted_from_disk(ie);
2900 break;
2901 case GOT_STATUS_ADD'A': {
2902 struct got_object_id *id;
2903 FILE *blob1_f;
2904 /*
2905 * Delete the added file only if its content already
2906 * exists in the repository.
2907 */
2908 err = got_object_blob_file_create(&id, &blob1_f, path1);
2909 if (err)
2910 goto done;
2911 if (got_object_id_cmp(id, id1) == 0) {
2912 err = (*a->progress_cb)(a->progress_arg,
2913 GOT_STATUS_DELETE'D', path1);
2914 if (err)
2915 goto done;
2916 err = remove_ondisk_file(a->worktree->root_path,
2917 path1);
2918 if (err)
2919 goto done;
2920 if (ie)
2921 got_fileindex_entry_remove(a->fileindex,
2922 ie);
2923 } else {
2924 err = (*a->progress_cb)(a->progress_arg,
2925 GOT_STATUS_CANNOT_DELETE'd', path1);
2926 }
2927 if (fclose(blob1_f) == EOF(-1) && err == NULL((void*)0))
2928 err = got_error_from_errno("fclose");
2929 free(id);
2930 if (err)
2931 goto done;
2932 break;
2933 }
2934 case GOT_STATUS_MODIFY'M':
2935 case GOT_STATUS_CONFLICT'C':
2936 err = (*a->progress_cb)(a->progress_arg,
2937 GOT_STATUS_CANNOT_DELETE'd', path1);
2938 if (err)
2939 goto done;
2940 break;
2941 case GOT_STATUS_OBSTRUCTED'~':
2942 err = (*a->progress_cb)(a->progress_arg, status, path1);
2943 if (err)
2944 goto done;
2945 break;
2946 default:
2947 break;
2948 }
2949 } else if (blob2) {
2950 if (asprintf(&ondisk_path, "%s/%s", a->worktree->root_path,
2951 path2) == -1)
2952 return got_error_from_errno("asprintf");
2953 ie = got_fileindex_entry_get(a->fileindex, path2,
2954 strlen(path2));
2955 if (ie) {
2956 err = get_file_status(&status, &sb, ie, ondisk_path,
2957 -1, NULL((void*)0), repo);
2958 if (err)
2959 goto done;
2960 if (status != GOT_STATUS_NO_CHANGE' ' &&
2961 status != GOT_STATUS_MODIFY'M' &&
2962 status != GOT_STATUS_CONFLICT'C' &&
2963 status != GOT_STATUS_ADD'A') {
2964 err = (*a->progress_cb)(a->progress_arg,
2965 status, path2);
2966 goto done;
2967 }
2968 if (S_ISLNK(mode2)((mode2 & 0170000) == 0120000) && S_ISLNK(sb.st_mode)((sb.st_mode & 0170000) == 0120000)) {
2969 char *link_target2;
2970 err = got_object_blob_read_to_str(&link_target2,
2971 blob2);
2972 if (err)
2973 goto done;
2974 err = merge_symlink(a->worktree, NULL((void*)0),
2975 ondisk_path, path2, a->label_orig,
2976 link_target2, a->commit_id2, repo,
2977 a->progress_cb, a->progress_arg);
2978 free(link_target2);
2979 } else if (S_ISREG(sb.st_mode)((sb.st_mode & 0170000) == 0100000)) {
2980 err = merge_blob(&local_changes_subsumed,
2981 a->worktree, NULL((void*)0), ondisk_path, path2,
2982 sb.st_mode, a->label_orig, blob2,
2983 a->commit_id2, repo, a->progress_cb,
2984 a->progress_arg);
2985 } else {
2986 err = got_error_path(ondisk_path,
2987 GOT_ERR_FILE_OBSTRUCTED31);
2988 }
2989 if (err)
2990 goto done;
2991 if (status == GOT_STATUS_DELETE'D') {
2992 err = got_fileindex_entry_update(ie,
2993 a->worktree->root_fd, path2, blob2->id.sha1,
2994 a->worktree->base_commit_id->sha1, 0);
2995 if (err)
2996 goto done;
2997 }
2998 } else {
2999 int is_bad_symlink = 0;
3000 sb.st_mode = GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004);
3001 if (S_ISLNK(mode2)((mode2 & 0170000) == 0120000)) {
3002 err = install_symlink(&is_bad_symlink,
3003 a->worktree, ondisk_path, path2, blob2, 0,
3004 0, 1, repo, a->progress_cb, a->progress_arg);
3005 } else {
3006 err = install_blob(a->worktree, ondisk_path, path2,
3007 mode2, sb.st_mode, blob2, 0, 0, 0, 1, repo,
3008 a->progress_cb, a->progress_arg);
3009 }
3010 if (err)
3011 goto done;
3012 err = got_fileindex_entry_alloc(&ie, path2);
3013 if (err)
3014 goto done;
3015 err = got_fileindex_entry_update(ie,
3016 a->worktree->root_fd, path2, NULL((void*)0), NULL((void*)0), 1);
3017 if (err) {
3018 got_fileindex_entry_free(ie);
3019 goto done;
3020 }
3021 err = got_fileindex_entry_add(a->fileindex, ie);
3022 if (err) {
3023 got_fileindex_entry_free(ie);
3024 goto done;
3025 }
3026 if (is_bad_symlink) {
3027 got_fileindex_entry_filetype_set(ie,
3028 GOT_FILEIDX_MODE_BAD_SYMLINK3);
3029 }
3030 }
3031 }
3032done:
3033 free(ondisk_path);
3034 return err;
3035}
3036
3037struct check_merge_ok_arg {
3038 struct got_worktree *worktree;
3039 struct got_repository *repo;
3040};
3041
3042static const struct got_error *
3043check_merge_ok(void *arg, struct got_fileindex_entry *ie)
3044{
3045 const struct got_error *err = NULL((void*)0);
3046 struct check_merge_ok_arg *a = arg;
3047 unsigned char status;
3048 struct stat sb;
3049 char *ondisk_path;
3050
3051 /* Reject merges into a work tree with mixed base commits. */
3052 if (memcmp(ie->commit_sha1, a->worktree->base_commit_id->sha1,
3053 SHA1_DIGEST_LENGTH20))
3054 return got_error(GOT_ERR_MIXED_COMMITS81);
3055
3056 if (asprintf(&ondisk_path, "%s/%s", a->worktree->root_path, ie->path)
3057 == -1)
3058 return got_error_from_errno("asprintf");
3059
3060 /* Reject merges into a work tree with conflicted files. */
3061 err = get_file_status(&status, &sb, ie, ondisk_path, -1, NULL((void*)0), a->repo);
3062 if (err)
3063 return err;
3064 if (status == GOT_STATUS_CONFLICT'C')
3065 return got_error(GOT_ERR_CONFLICTS82);
3066
3067 return NULL((void*)0);
3068}
3069
3070static const struct got_error *
3071merge_files(struct got_worktree *worktree, struct got_fileindex *fileindex,
3072 const char *fileindex_path, struct got_object_id *commit_id1,
3073 struct got_object_id *commit_id2, struct got_repository *repo,
3074 got_worktree_checkout_cb progress_cb, void *progress_arg,
3075 got_cancel_cb cancel_cb, void *cancel_arg)
3076{
3077 const struct got_error *err = NULL((void*)0), *sync_err;
3078 struct got_object_id *tree_id1 = NULL((void*)0), *tree_id2 = NULL((void*)0);
3079 struct got_tree_object *tree1 = NULL((void*)0), *tree2 = NULL((void*)0);
3080 struct merge_file_cb_arg arg;
3081 char *label_orig = NULL((void*)0);
3082
3083 if (commit_id1) {
3084 err = got_object_id_by_path(&tree_id1, repo, commit_id1,
3085 worktree->path_prefix);
3086 if (err && err->code != GOT_ERR_NO_TREE_ENTRY50)
3087 goto done;
3088 }
3089 if (tree_id1) {
3090 char *id_str;
3091
3092 err = got_object_open_as_tree(&tree1, repo, tree_id1);
3093 if (err)
3094 goto done;
3095
3096 err = got_object_id_str(&id_str, commit_id1);
3097 if (err)
3098 goto done;
3099
3100 if (asprintf(&label_orig, "%s: commit %s",
3101 GOT_MERGE_LABEL_BASE"3-way merge base", id_str) == -1) {
3102 err = got_error_from_errno("asprintf");
3103 free(id_str);
3104 goto done;
3105 }
3106 free(id_str);
3107 }
3108
3109 err = got_object_id_by_path(&tree_id2, repo, commit_id2,
3110 worktree->path_prefix);
3111 if (err)
3112 goto done;
3113
3114 err = got_object_open_as_tree(&tree2, repo, tree_id2);
3115 if (err)
3116 goto done;
3117
3118 arg.worktree = worktree;
3119 arg.fileindex = fileindex;
3120 arg.progress_cb = progress_cb;
3121 arg.progress_arg = progress_arg;
3122 arg.cancel_cb = cancel_cb;
3123 arg.cancel_arg = cancel_arg;
3124 arg.label_orig = label_orig;
3125 arg.commit_id2 = commit_id2;
3126 err = got_diff_tree(tree1, tree2, "", "", repo, merge_file_cb, &arg, 1);
3127 sync_err = sync_fileindex(fileindex, fileindex_path);
3128 if (sync_err && err == NULL((void*)0))
3129 err = sync_err;
3130done:
3131 if (tree1)
3132 got_object_tree_close(tree1);
3133 if (tree2)
3134 got_object_tree_close(tree2);
3135 free(label_orig);
3136 return err;
3137}
3138
3139const struct got_error *
3140got_worktree_merge_files(struct got_worktree *worktree,
3141 struct got_object_id *commit_id1, struct got_object_id *commit_id2,
3142 struct got_repository *repo, got_worktree_checkout_cb progress_cb,
3143 void *progress_arg, got_cancel_cb cancel_cb, void *cancel_arg)
3144{
3145 const struct got_error *err, *unlockerr;
3146 char *fileindex_path = NULL((void*)0);
3147 struct got_fileindex *fileindex = NULL((void*)0);
3148 struct check_merge_ok_arg mok_arg;
3149
3150 err = lock_worktree(worktree, LOCK_EX0x02);
3151 if (err)
3152 return err;
3153
3154 err = open_fileindex(&fileindex, &fileindex_path, worktree);
3155 if (err)
3156 goto done;
3157
3158 mok_arg.worktree = worktree;
3159 mok_arg.repo = repo;
3160 err = got_fileindex_for_each_entry_safe(fileindex, check_merge_ok,
3161 &mok_arg);
3162 if (err)
3163 goto done;
3164
3165 err = merge_files(worktree, fileindex, fileindex_path, commit_id1,
3166 commit_id2, repo, progress_cb, progress_arg, cancel_cb, cancel_arg);
3167done:
3168 if (fileindex)
3169 got_fileindex_free(fileindex);
3170 free(fileindex_path);
3171 unlockerr = lock_worktree(worktree, LOCK_SH0x01);
3172 if (unlockerr && err == NULL((void*)0))
3173 err = unlockerr;
3174 return err;
3175}
3176
3177struct diff_dir_cb_arg {
3178 struct got_fileindex *fileindex;
3179 struct got_worktree *worktree;
3180 const char *status_path;
3181 size_t status_path_len;
3182 struct got_repository *repo;
3183 got_worktree_status_cb status_cb;
3184 void *status_arg;
3185 got_cancel_cb cancel_cb;
3186 void *cancel_arg;
3187 /* A pathlist containing per-directory pathlists of ignore patterns. */
3188 struct got_pathlist_head ignores;
3189 int report_unchanged;
3190 int no_ignores;
3191};
3192
3193static const struct got_error *
3194report_file_status(struct got_fileindex_entry *ie, const char *abspath,
3195 int dirfd, const char *de_name,
3196 got_worktree_status_cb status_cb, void *status_arg,
3197 struct got_repository *repo, int report_unchanged)
3198{
3199 const struct got_error *err = NULL((void*)0);
3200 unsigned char status = GOT_STATUS_NO_CHANGE' ';
3201 unsigned char staged_status = get_staged_status(ie);
3202 struct stat sb;
3203 struct got_object_id blob_id, commit_id, staged_blob_id;
3204 struct got_object_id *blob_idp = NULL((void*)0), *commit_idp = NULL((void*)0);
3205 struct got_object_id *staged_blob_idp = NULL((void*)0);
3206
3207 err = get_file_status(&status, &sb, ie, abspath, dirfd, de_name, repo);
3208 if (err)
3209 return err;
3210
3211 if (status == GOT_STATUS_NO_CHANGE' ' &&
3212 staged_status == GOT_STATUS_NO_CHANGE' ' && !report_unchanged)
3213 return NULL((void*)0);
3214
3215 if (got_fileindex_entry_has_blob(ie)) {
3216 memcpy(blob_id.sha1, ie->blob_sha1, SHA1_DIGEST_LENGTH20);
3217 blob_idp = &blob_id;
3218 }
3219 if (got_fileindex_entry_has_commit(ie)) {
3220 memcpy(commit_id.sha1, ie->commit_sha1, SHA1_DIGEST_LENGTH20);
3221 commit_idp = &commit_id;
3222 }
3223 if (staged_status == GOT_STATUS_ADD'A' ||
3224 staged_status == GOT_STATUS_MODIFY'M') {
3225 memcpy(staged_blob_id.sha1, ie->staged_blob_sha1,
3226 SHA1_DIGEST_LENGTH20);
3227 staged_blob_idp = &staged_blob_id;
3228 }
3229
3230 return (*status_cb)(status_arg, status, staged_status,
3231 ie->path, blob_idp, staged_blob_idp, commit_idp, dirfd, de_name);
3232}
3233
3234static const struct got_error *
3235status_old_new(void *arg, struct got_fileindex_entry *ie,
3236 struct dirent *de, const char *parent_path, int dirfd)
3237{
3238 const struct got_error *err = NULL((void*)0);
3239 struct diff_dir_cb_arg *a = arg;
3240 char *abspath;
3241
3242 if (a->cancel_cb && a->cancel_cb(a->cancel_arg))
3243 return got_error(GOT_ERR_CANCELLED49);
3244
3245 if (got_path_cmp(parent_path, a->status_path,
3246 strlen(parent_path), a->status_path_len) != 0 &&
3247 !got_path_is_child(parent_path, a->status_path, a->status_path_len))
3248 return NULL((void*)0);
3249
3250 if (parent_path[0]) {
3251 if (asprintf(&abspath, "%s/%s/%s", a->worktree->root_path,
3252 parent_path, de->d_name) == -1)
3253 return got_error_from_errno("asprintf");
3254 } else {
3255 if (asprintf(&abspath, "%s/%s", a->worktree->root_path,
3256 de->d_name) == -1)
3257 return got_error_from_errno("asprintf");
3258 }
3259
3260 err = report_file_status(ie, abspath, dirfd, de->d_name,
3261 a->status_cb, a->status_arg, a->repo, a->report_unchanged);
3262 free(abspath);
3263 return err;
3264}
3265
3266static const struct got_error *
3267status_old(void *arg, struct got_fileindex_entry *ie, const char *parent_path)
3268{
3269 struct diff_dir_cb_arg *a = arg;
3270 struct got_object_id blob_id, commit_id;
3271 unsigned char status;
3272
3273 if (a->cancel_cb && a->cancel_cb(a->cancel_arg))
3274 return got_error(GOT_ERR_CANCELLED49);
3275
3276 if (!got_path_is_child(ie->path, a->status_path, a->status_path_len))
3277 return NULL((void*)0);
3278
3279 memcpy(blob_id.sha1, ie->blob_sha1, SHA1_DIGEST_LENGTH20);
3280 memcpy(commit_id.sha1, ie->commit_sha1, SHA1_DIGEST_LENGTH20);
3281 if (got_fileindex_entry_has_file_on_disk(ie))
3282 status = GOT_STATUS_MISSING'!';
3283 else
3284 status = GOT_STATUS_DELETE'D';
3285 return (*a->status_cb)(a->status_arg, status, get_staged_status(ie),
3286 ie->path, &blob_id, NULL((void*)0), &commit_id, -1, NULL((void*)0));
3287}
3288
3289void
3290free_ignorelist(struct got_pathlist_head *ignorelist)
3291{
3292 struct got_pathlist_entry *pe;
3293
3294 TAILQ_FOREACH(pe, ignorelist, entry)for((pe) = ((ignorelist)->tqh_first); (pe) != ((void*)0); (
pe) = ((pe)->entry.tqe_next))
3295 free((char *)pe->path);
3296 got_pathlist_free(ignorelist);
3297}
3298
3299void
3300free_ignores(struct got_pathlist_head *ignores)
3301{
3302 struct got_pathlist_entry *pe;
3303
3304 TAILQ_FOREACH(pe, ignores, entry)for((pe) = ((ignores)->tqh_first); (pe) != ((void*)0); (pe
) = ((pe)->entry.tqe_next))
{
3305 struct got_pathlist_head *ignorelist = pe->data;
3306 free_ignorelist(ignorelist);
3307 free((char *)pe->path);
3308 }
3309 got_pathlist_free(ignores);
3310}
3311
3312static const struct got_error *
3313read_ignores(struct got_pathlist_head *ignores, const char *path, FILE *f)
3314{
3315 const struct got_error *err = NULL((void*)0);
3316 struct got_pathlist_entry *pe = NULL((void*)0);
3317 struct got_pathlist_head *ignorelist;
3318 char *line = NULL((void*)0), *pattern, *dirpath = NULL((void*)0);
3319 size_t linesize = 0;
3320 ssize_t linelen;
3321
3322 ignorelist = calloc(1, sizeof(*ignorelist));
3323 if (ignorelist == NULL((void*)0))
3324 return got_error_from_errno("calloc");
3325 TAILQ_INIT(ignorelist)do { (ignorelist)->tqh_first = ((void*)0); (ignorelist)->
tqh_last = &(ignorelist)->tqh_first; } while (0)
;
3326
3327 while ((linelen = getline(&line, &linesize, f)) != -1) {
3328 if (linelen > 0 && line[linelen - 1] == '\n')
3329 line[linelen - 1] = '\0';
3330
3331 /* Git's ignores may contain comments. */
3332 if (line[0] == '#')
3333 continue;
3334
3335 /* Git's negated patterns are not (yet?) supported. */
3336 if (line[0] == '!')
3337 continue;
3338
3339 if (asprintf(&pattern, "%s%s%s", path, path[0] ? "/" : "",
3340 line) == -1) {
3341 err = got_error_from_errno("asprintf");
3342 goto done;
3343 }
3344 err = got_pathlist_insert(NULL((void*)0), ignorelist, pattern, NULL((void*)0));
3345 if (err)
3346 goto done;
3347 }
3348 if (ferror(f)(!__isthreaded ? (((f)->_flags & 0x0040) != 0) : (ferror
)(f))
) {
3349 err = got_error_from_errno("getline");
3350 goto done;
3351 }
3352
3353 dirpath = strdup(path);
3354 if (dirpath == NULL((void*)0)) {
3355 err = got_error_from_errno("strdup");
3356 goto done;
3357 }
3358 err = got_pathlist_insert(&pe, ignores, dirpath, ignorelist);
3359done:
3360 free(line);
3361 if (err || pe == NULL((void*)0)) {
3362 free(dirpath);
3363 free_ignorelist(ignorelist);
3364 }
3365 return err;
3366}
3367
3368int
3369match_ignores(struct got_pathlist_head *ignores, const char *path)
3370{
3371 struct got_pathlist_entry *pe;
3372
3373 /* Handle patterns which match in all directories. */
3374 TAILQ_FOREACH(pe, ignores, entry)for((pe) = ((ignores)->tqh_first); (pe) != ((void*)0); (pe
) = ((pe)->entry.tqe_next))
{
3375 struct got_pathlist_head *ignorelist = pe->data;
3376 struct got_pathlist_entry *pi;
3377
3378 TAILQ_FOREACH(pi, ignorelist, entry)for((pi) = ((ignorelist)->tqh_first); (pi) != ((void*)0); (
pi) = ((pi)->entry.tqe_next))
{
3379 const char *p, *pattern = pi->path;
3380
3381 if (strncmp(pattern, "**/", 3) != 0)
3382 continue;
3383 pattern += 3;
3384 p = path;
3385 while (*p) {
3386 if (fnmatch(pattern, p,
3387 FNM_PATHNAME0x02 | FNM_LEADING_DIR0x08)) {
3388 /* Retry in next directory. */
3389 while (*p && *p != '/')
3390 p++;
3391 while (*p == '/')
3392 p++;
3393 continue;
3394 }
3395 return 1;
3396 }
3397 }
3398 }
3399
3400 /*
3401 * The ignores pathlist contains ignore lists from children before
3402 * parents, so we can find the most specific ignorelist by walking
3403 * ignores backwards.
3404 */
3405 pe = TAILQ_LAST(ignores, got_pathlist_head)(*(((struct got_pathlist_head *)((ignores)->tqh_last))->
tqh_last))
;
3406 while (pe) {
3407 if (got_path_is_child(path, pe->path, pe->path_len)) {
3408 struct got_pathlist_head *ignorelist = pe->data;
3409 struct got_pathlist_entry *pi;
3410 TAILQ_FOREACH(pi, ignorelist, entry)for((pi) = ((ignorelist)->tqh_first); (pi) != ((void*)0); (
pi) = ((pi)->entry.tqe_next))
{
3411 const char *pattern = pi->path;
3412 int flags = FNM_LEADING_DIR0x08;
3413 if (strstr(pattern, "/**/") == NULL((void*)0))
3414 flags |= FNM_PATHNAME0x02;
3415 if (fnmatch(pattern, path, flags))
3416 continue;
3417 return 1;
3418 }
3419 }
3420 pe = TAILQ_PREV(pe, got_pathlist_head, entry)(*(((struct got_pathlist_head *)((pe)->entry.tqe_prev))->
tqh_last))
;
3421 }
3422
3423 return 0;
3424}
3425
3426static const struct got_error *
3427add_ignores(struct got_pathlist_head *ignores, const char *root_path,
3428 const char *path, int dirfd, const char *ignores_filename)
3429{
3430 const struct got_error *err = NULL((void*)0);
3431 char *ignorespath;
3432 int fd = -1;
3433 FILE *ignoresfile = NULL((void*)0);
3434
3435 if (asprintf(&ignorespath, "%s/%s%s%s", root_path, path,
3436 path[0] ? "/" : "", ignores_filename) == -1)
3437 return got_error_from_errno("asprintf");
3438
3439 if (dirfd != -1) {
3440 fd = openat(dirfd, ignores_filename, O_RDONLY0x0000 | O_NOFOLLOW0x0100);
3441 if (fd == -1) {
3442 if (errno(*__errno()) != ENOENT2 && errno(*__errno()) != EACCES13)
3443 err = got_error_from_errno2("openat",
3444 ignorespath);
3445 } else {
3446 ignoresfile = fdopen(fd, "r");
3447 if (ignoresfile == NULL((void*)0))
3448 err = got_error_from_errno2("fdopen",
3449 ignorespath);
3450 else {
3451 fd = -1;
3452 err = read_ignores(ignores, path, ignoresfile);
3453 }
3454 }
3455 } else {
3456 ignoresfile = fopen(ignorespath, "r");
3457 if (ignoresfile == NULL((void*)0)) {
3458 if (errno(*__errno()) != ENOENT2 && errno(*__errno()) != EACCES13)
3459 err = got_error_from_errno2("fopen",
3460 ignorespath);
3461 } else
3462 err = read_ignores(ignores, path, ignoresfile);
3463 }
3464
3465 if (ignoresfile && fclose(ignoresfile) == EOF(-1) && err == NULL((void*)0))
3466 err = got_error_from_errno2("fclose", path);
3467 if (fd != -1 && close(fd) == -1 && err == NULL((void*)0))
3468 err = got_error_from_errno2("close", path);
3469 free(ignorespath);
3470 return err;
3471}
3472
3473static const struct got_error *
3474status_new(void *arg, struct dirent *de, const char *parent_path, int dirfd)
3475{
3476 const struct got_error *err = NULL((void*)0);
3477 struct diff_dir_cb_arg *a = arg;
3478 char *path = NULL((void*)0);
3479
3480 if (a->cancel_cb && a->cancel_cb(a->cancel_arg))
3481 return got_error(GOT_ERR_CANCELLED49);
3482
3483 if (parent_path[0]) {
3484 if (asprintf(&path, "%s/%s", parent_path, de->d_name) == -1)
3485 return got_error_from_errno("asprintf");
3486 } else {
3487 path = de->d_name;
3488 }
3489
3490 if (de->d_type != DT_DIR4 &&
3491 got_path_is_child(path, a->status_path, a->status_path_len)
3492 && !match_ignores(&a->ignores, path))
3493 err = (*a->status_cb)(a->status_arg, GOT_STATUS_UNVERSIONED'?',
3494 GOT_STATUS_NO_CHANGE' ', path, NULL((void*)0), NULL((void*)0), NULL((void*)0), -1, NULL((void*)0));
3495 if (parent_path[0])
3496 free(path);
3497 return err;
3498}
3499
3500static const struct got_error *
3501status_traverse(void *arg, const char *path, int dirfd)
3502{
3503 const struct got_error *err = NULL((void*)0);
3504 struct diff_dir_cb_arg *a = arg;
3505
3506 if (a->no_ignores)
3507 return NULL((void*)0);
3508
3509 err = add_ignores(&a->ignores, a->worktree->root_path,
3510 path, dirfd, ".cvsignore");
3511 if (err)
3512 return err;
3513
3514 err = add_ignores(&a->ignores, a->worktree->root_path, path,
3515 dirfd, ".gitignore");
3516
3517 return err;
3518}
3519
3520static const struct got_error *
3521report_single_file_status(const char *path, const char *ondisk_path,
3522struct got_fileindex *fileindex, got_worktree_status_cb status_cb,
3523void *status_arg, struct got_repository *repo, int report_unchanged)
3524{
3525 struct got_fileindex_entry *ie;
3526 struct stat sb;
3527
3528 ie = got_fileindex_entry_get(fileindex, path, strlen(path));
3529 if (ie)
3530 return report_file_status(ie, ondisk_path, -1, NULL((void*)0),
3531 status_cb, status_arg, repo, report_unchanged);
3532
3533 if (lstat(ondisk_path, &sb) == -1) {
3534 if (errno(*__errno()) != ENOENT2)
3535 return got_error_from_errno2("lstat", ondisk_path);
3536 return (*status_cb)(status_arg, GOT_STATUS_NONEXISTENT'N',
3537 GOT_STATUS_NO_CHANGE' ', path, NULL((void*)0), NULL((void*)0), NULL((void*)0), -1, NULL((void*)0));
3538 return NULL((void*)0);
3539 }
3540
3541 if (S_ISREG(sb.st_mode)((sb.st_mode & 0170000) == 0100000) || S_ISLNK(sb.st_mode)((sb.st_mode & 0170000) == 0120000))
3542 return (*status_cb)(status_arg, GOT_STATUS_UNVERSIONED'?',
3543 GOT_STATUS_NO_CHANGE' ', path, NULL((void*)0), NULL((void*)0), NULL((void*)0), -1, NULL((void*)0));
3544
3545 return NULL((void*)0);
3546}
3547
3548static const struct got_error *
3549add_ignores_from_parent_paths(struct got_pathlist_head *ignores,
3550 const char *root_path, const char *path)
3551{
3552 const struct got_error *err;
3553 char *parent_path, *next_parent_path = NULL((void*)0);
3554
3555 err = add_ignores(ignores, root_path, "", -1,
3556 ".cvsignore");
3557 if (err)
3558 return err;
3559
3560 err = add_ignores(ignores, root_path, "", -1,
3561 ".gitignore");
3562 if (err)
3563 return err;
3564
3565 err = got_path_dirname(&parent_path, path);
3566 if (err) {
3567 if (err->code == GOT_ERR_BAD_PATH4)
3568 return NULL((void*)0); /* cannot traverse parent */
3569 return err;
3570 }
3571 for (;;) {
3572 err = add_ignores(ignores, root_path, parent_path, -1,
3573 ".cvsignore");
3574 if (err)
3575 break;
3576 err = add_ignores(ignores, root_path, parent_path, -1,
3577 ".gitignore");
3578 if (err)
3579 break;
3580 err = got_path_dirname(&next_parent_path, parent_path);
3581 if (err) {
3582 if (err->code == GOT_ERR_BAD_PATH4)
3583 err = NULL((void*)0); /* traversed everything */
3584 break;
3585 }
3586 free(parent_path);
3587 parent_path = next_parent_path;
3588 next_parent_path = NULL((void*)0);
3589 }
3590
3591 free(parent_path);
3592 free(next_parent_path);
3593 return err;
3594}
3595
3596static const struct got_error *
3597worktree_status(struct got_worktree *worktree, const char *path,
3598 struct got_fileindex *fileindex, struct got_repository *repo,
3599 got_worktree_status_cb status_cb, void *status_arg,
3600 got_cancel_cb cancel_cb, void *cancel_arg, int no_ignores,
3601 int report_unchanged)
3602{
3603 const struct got_error *err = NULL((void*)0);
3604 int fd = -1;
3605 struct got_fileindex_diff_dir_cb fdiff_cb;
3606 struct diff_dir_cb_arg arg;
3607 char *ondisk_path = NULL((void*)0);
3608
3609 TAILQ_INIT(&arg.ignores)do { (&arg.ignores)->tqh_first = ((void*)0); (&arg
.ignores)->tqh_last = &(&arg.ignores)->tqh_first
; } while (0)
;
3610
3611 if (asprintf(&ondisk_path, "%s%s%s",
3612 worktree->root_path, path[0] ? "/" : "", path) == -1)
3613 return got_error_from_errno("asprintf");
3614
3615 fd = open(ondisk_path, O_RDONLY0x0000 | O_NOFOLLOW0x0100 | O_DIRECTORY0x20000);
3616 if (fd == -1) {
3617 if (errno(*__errno()) != ENOTDIR20 && errno(*__errno()) != ENOENT2 && errno(*__errno()) != EACCES13 &&
3618 errno(*__errno()) != ELOOP62)
3619 err = got_error_from_errno2("open", ondisk_path);
3620 else
3621 err = report_single_file_status(path, ondisk_path,
3622 fileindex, status_cb, status_arg, repo,
3623 report_unchanged);
3624 } else {
3625 fdiff_cb.diff_old_new = status_old_new;
3626 fdiff_cb.diff_old = status_old;
3627 fdiff_cb.diff_new = status_new;
3628 fdiff_cb.diff_traverse = status_traverse;
3629 arg.fileindex = fileindex;
3630 arg.worktree = worktree;
3631 arg.status_path = path;
3632 arg.status_path_len = strlen(path);
3633 arg.repo = repo;
3634 arg.status_cb = status_cb;
3635 arg.status_arg = status_arg;
3636 arg.cancel_cb = cancel_cb;
3637 arg.cancel_arg = cancel_arg;
3638 arg.report_unchanged = report_unchanged;
3639 arg.no_ignores = no_ignores;
3640 if (!no_ignores) {
3641 err = add_ignores_from_parent_paths(&arg.ignores,
3642 worktree->root_path, path);
3643 if (err)
3644 goto done;
3645 }
3646 err = got_fileindex_diff_dir(fileindex, fd,
3647 worktree->root_path, path, repo, &fdiff_cb, &arg);
3648 }
3649done:
3650 free_ignores(&arg.ignores);
3651 if (fd != -1 && close(fd) == -1 && err == NULL((void*)0))
3652 err = got_error_from_errno("close");
3653 free(ondisk_path);
3654 return err;
3655}
3656
3657const struct got_error *
3658got_worktree_status(struct got_worktree *worktree,
3659 struct got_pathlist_head *paths, struct got_repository *repo,
3660 got_worktree_status_cb status_cb, void *status_arg,
3661 got_cancel_cb cancel_cb, void *cancel_arg)
3662{
3663 const struct got_error *err = NULL((void*)0);
3664 char *fileindex_path = NULL((void*)0);
3665 struct got_fileindex *fileindex = NULL((void*)0);
3666 struct got_pathlist_entry *pe;
3667
3668 err = open_fileindex(&fileindex, &fileindex_path, worktree);
3669 if (err)
3670 return err;
3671
3672 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
3673 err = worktree_status(worktree, pe->path, fileindex, repo,
3674 status_cb, status_arg, cancel_cb, cancel_arg, 0, 0);
3675 if (err)
3676 break;
3677 }
3678 free(fileindex_path);
3679 got_fileindex_free(fileindex);
3680 return err;
3681}
3682
3683const struct got_error *
3684got_worktree_resolve_path(char **wt_path, struct got_worktree *worktree,
3685 const char *arg)
3686{
3687 const struct got_error *err = NULL((void*)0);
3688 char *resolved = NULL((void*)0), *cwd = NULL((void*)0), *path = NULL((void*)0);
3689 size_t len;
3690 struct stat sb;
3691 char *abspath = NULL((void*)0);
3692 char canonpath[PATH_MAX1024];
3693
3694 *wt_path = NULL((void*)0);
3695
3696 cwd = getcwd(NULL((void*)0), 0);
3697 if (cwd == NULL((void*)0))
3698 return got_error_from_errno("getcwd");
3699
3700 if (lstat(arg, &sb) == -1) {
3701 if (errno(*__errno()) != ENOENT2) {
3702 err = got_error_from_errno2("lstat", arg);
3703 goto done;
3704 }
3705 sb.st_mode = 0;
3706 }
3707 if (S_ISLNK(sb.st_mode)((sb.st_mode & 0170000) == 0120000)) {
3708 /*
3709 * We cannot use realpath(3) with symlinks since we want to
3710 * operate on the symlink itself.
3711 * But we can make the path absolute, assuming it is relative
3712 * to the current working directory, and then canonicalize it.
3713 */
3714 if (!got_path_is_absolute(arg)) {
3715 if (asprintf(&abspath, "%s/%s", cwd, arg) == -1) {
3716 err = got_error_from_errno("asprintf");
3717 goto done;
3718 }
3719
3720 }
3721 err = got_canonpath(abspath ? abspath : arg, canonpath,
3722 sizeof(canonpath));
3723 if (err)
3724 goto done;
3725 resolved = strdup(canonpath);
3726 if (resolved == NULL((void*)0)) {
3727 err = got_error_from_errno("strdup");
3728 goto done;
3729 }
3730 } else {
3731 resolved = realpath(arg, NULL((void*)0));
3732 if (resolved == NULL((void*)0)) {
3733 if (errno(*__errno()) != ENOENT2) {
3734 err = got_error_from_errno2("realpath", arg);
3735 goto done;
3736 }
3737 if (asprintf(&abspath, "%s/%s", cwd, arg) == -1) {
3738 err = got_error_from_errno("asprintf");
3739 goto done;
3740 }
3741 err = got_canonpath(abspath, canonpath,
3742 sizeof(canonpath));
3743 if (err)
3744 goto done;
3745 resolved = strdup(canonpath);
3746 if (resolved == NULL((void*)0)) {
3747 err = got_error_from_errno("strdup");
3748 goto done;
3749 }
3750 }
3751 }
3752
3753 if (strncmp(got_worktree_get_root_path(worktree), resolved,
3754 strlen(got_worktree_get_root_path(worktree)))) {
3755 err = got_error_path(resolved, GOT_ERR_BAD_PATH4);
3756 goto done;
3757 }
3758
3759 if (strlen(resolved) > strlen(got_worktree_get_root_path(worktree))) {
3760 err = got_path_skip_common_ancestor(&path,
3761 got_worktree_get_root_path(worktree), resolved);
3762 if (err)
3763 goto done;
3764 } else {
3765 path = strdup("");
3766 if (path == NULL((void*)0)) {
3767 err = got_error_from_errno("strdup");
3768 goto done;
3769 }
3770 }
3771
3772 /* XXX status walk can't deal with trailing slash! */
3773 len = strlen(path);
3774 while (len > 0 && path[len - 1] == '/') {
3775 path[len - 1] = '\0';
3776 len--;
3777 }
3778done:
3779 free(abspath);
3780 free(resolved);
3781 free(cwd);
3782 if (err == NULL((void*)0))
3783 *wt_path = path;
3784 else
3785 free(path);
3786 return err;
3787}
3788
3789struct schedule_addition_args {
3790 struct got_worktree *worktree;
3791 struct got_fileindex *fileindex;
3792 got_worktree_checkout_cb progress_cb;
3793 void *progress_arg;
3794 struct got_repository *repo;
3795};
3796
3797static const struct got_error *
3798schedule_addition(void *arg, unsigned char status, unsigned char staged_status,
3799 const char *relpath, struct got_object_id *blob_id,
3800 struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
3801 int dirfd, const char *de_name)
3802{
3803 struct schedule_addition_args *a = arg;
3804 const struct got_error *err = NULL((void*)0);
3805 struct got_fileindex_entry *ie;
3806 struct stat sb;
3807 char *ondisk_path;
3808
3809 if (asprintf(&ondisk_path, "%s/%s", a->worktree->root_path,
3810 relpath) == -1)
3811 return got_error_from_errno("asprintf");
3812
3813 ie = got_fileindex_entry_get(a->fileindex, relpath, strlen(relpath));
3814 if (ie) {
3815 err = get_file_status(&status, &sb, ie, ondisk_path, dirfd,
3816 de_name, a->repo);
3817 if (err)
3818 goto done;
3819 /* Re-adding an existing entry is a no-op. */
3820 if (status == GOT_STATUS_ADD'A')
3821 goto done;
3822 err = got_error_path(relpath, GOT_ERR_FILE_STATUS68);
3823 if (err)
3824 goto done;
3825 }
3826
3827 if (status != GOT_STATUS_UNVERSIONED'?') {
3828 err = got_error_path(ondisk_path, GOT_ERR_FILE_STATUS68);
3829 goto done;
3830 }
3831
3832 err = got_fileindex_entry_alloc(&ie, relpath);
3833 if (err)
3834 goto done;
3835 err = got_fileindex_entry_update(ie, a->worktree->root_fd,
3836 relpath, NULL((void*)0), NULL((void*)0), 1);
3837 if (err) {
3838 got_fileindex_entry_free(ie);
3839 goto done;
3840 }
3841 err = got_fileindex_entry_add(a->fileindex, ie);
3842 if (err) {
3843 got_fileindex_entry_free(ie);
3844 goto done;
3845 }
3846done:
3847 free(ondisk_path);
3848 if (err)
3849 return err;
3850 if (status == GOT_STATUS_ADD'A')
3851 return NULL((void*)0);
3852 return (*a->progress_cb)(a->progress_arg, GOT_STATUS_ADD'A', relpath);
3853}
3854
3855const struct got_error *
3856got_worktree_schedule_add(struct got_worktree *worktree,
3857 struct got_pathlist_head *paths,
3858 got_worktree_checkout_cb progress_cb, void *progress_arg,
3859 struct got_repository *repo, int no_ignores)
3860{
3861 struct got_fileindex *fileindex = NULL((void*)0);
3862 char *fileindex_path = NULL((void*)0);
3863 const struct got_error *err = NULL((void*)0), *sync_err, *unlockerr;
3864 struct got_pathlist_entry *pe;
3865 struct schedule_addition_args saa;
3866
3867 err = lock_worktree(worktree, LOCK_EX0x02);
3868 if (err)
3869 return err;
3870
3871 err = open_fileindex(&fileindex, &fileindex_path, worktree);
3872 if (err)
3873 goto done;
3874
3875 saa.worktree = worktree;
3876 saa.fileindex = fileindex;
3877 saa.progress_cb = progress_cb;
3878 saa.progress_arg = progress_arg;
3879 saa.repo = repo;
3880
3881 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
3882 err = worktree_status(worktree, pe->path, fileindex, repo,
3883 schedule_addition, &saa, NULL((void*)0), NULL((void*)0), no_ignores, 0);
3884 if (err)
3885 break;
3886 }
3887 sync_err = sync_fileindex(fileindex, fileindex_path);
3888 if (sync_err && err == NULL((void*)0))
3889 err = sync_err;
3890done:
3891 free(fileindex_path);
3892 if (fileindex)
3893 got_fileindex_free(fileindex);
3894 unlockerr = lock_worktree(worktree, LOCK_SH0x01);
3895 if (unlockerr && err == NULL((void*)0))
3896 err = unlockerr;
3897 return err;
3898}
3899
3900struct schedule_deletion_args {
3901 struct got_worktree *worktree;
3902 struct got_fileindex *fileindex;
3903 got_worktree_delete_cb progress_cb;
3904 void *progress_arg;
3905 struct got_repository *repo;
3906 int delete_local_mods;
3907 int keep_on_disk;
3908 const char *status_codes;
3909};
3910
3911static const struct got_error *
3912schedule_for_deletion(void *arg, unsigned char status,
3913 unsigned char staged_status, const char *relpath,
3914 struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
3915 struct got_object_id *commit_id, int dirfd, const char *de_name)
3916{
3917 struct schedule_deletion_args *a = arg;
3918 const struct got_error *err = NULL((void*)0);
3919 struct got_fileindex_entry *ie = NULL((void*)0);
3920 struct stat sb;
3921 char *ondisk_path;
3922
3923 ie = got_fileindex_entry_get(a->fileindex, relpath, strlen(relpath));
3924 if (ie == NULL((void*)0))
3925 return got_error_path(relpath, GOT_ERR_BAD_PATH4);
3926
3927 staged_status = get_staged_status(ie);
3928 if (staged_status != GOT_STATUS_NO_CHANGE' ') {
3929 if (staged_status == GOT_STATUS_DELETE'D')
3930 return NULL((void*)0);
3931 return got_error_path(relpath, GOT_ERR_FILE_STAGED101);
3932 }
3933
3934 if (asprintf(&ondisk_path, "%s/%s", a->worktree->root_path,
3935 relpath) == -1)
3936 return got_error_from_errno("asprintf");
3937
3938 err = get_file_status(&status, &sb, ie, ondisk_path, dirfd, de_name,
3939 a->repo);
3940 if (err)
3941 goto done;
3942
3943 if (a->status_codes) {
3944 size_t ncodes = strlen(a->status_codes);
3945 int i;
3946 for (i = 0; i < ncodes ; i++) {
3947 if (status == a->status_codes[i])
3948 break;
3949 }
3950 if (i == ncodes) {
3951 /* Do not delete files in non-matching status. */
3952 free(ondisk_path);
3953 return NULL((void*)0);
3954 }
3955 if (a->status_codes[i] != GOT_STATUS_MODIFY'M' &&
3956 a->status_codes[i] != GOT_STATUS_MISSING'!') {
3957 static char msg[64];
3958 snprintf(msg, sizeof(msg),
3959 "invalid status code '%c'", a->status_codes[i]);
3960 err = got_error_msg(GOT_ERR_FILE_STATUS68, msg);
3961 goto done;
3962 }
3963 }
3964
3965 if (status != GOT_STATUS_NO_CHANGE' ') {
3966 if (status == GOT_STATUS_DELETE'D')
3967 goto done;
3968 if (status == GOT_STATUS_MODIFY'M' && !a->delete_local_mods) {
3969 err = got_error_path(relpath, GOT_ERR_FILE_MODIFIED67);
3970 goto done;
3971 }
3972 if (status != GOT_STATUS_MODIFY'M' &&
3973 status != GOT_STATUS_MISSING'!') {
3974 err = got_error_path(relpath, GOT_ERR_FILE_STATUS68);
3975 goto done;
3976 }
3977 }
3978
3979 if (!a->keep_on_disk && status != GOT_STATUS_MISSING'!') {
3980 size_t root_len;
3981
3982 if (dirfd != -1) {
3983 if (unlinkat(dirfd, de_name, 0) != 0) {
3984 err = got_error_from_errno2("unlinkat",
3985 ondisk_path);
3986 goto done;
3987 }
3988 } else if (unlink(ondisk_path) != 0) {
3989 err = got_error_from_errno2("unlink", ondisk_path);
3990 goto done;
3991 }
3992
3993 root_len = strlen(a->worktree->root_path);
3994 do {
3995 char *parent;
3996 err = got_path_dirname(&parent, ondisk_path);
3997 if (err)
3998 goto done;
3999 free(ondisk_path);
4000 ondisk_path = parent;
4001 if (rmdir(ondisk_path) == -1) {
4002 if (errno(*__errno()) != ENOTEMPTY66)
4003 err = got_error_from_errno2("rmdir",
4004 ondisk_path);
4005 break;
4006 }
4007 } while (got_path_cmp(ondisk_path, a->worktree->root_path,
4008 strlen(ondisk_path), root_len) != 0);
4009 }
4010
4011 got_fileindex_entry_mark_deleted_from_disk(ie);
4012done:
4013 free(ondisk_path);
4014 if (err)
4015 return err;
4016 if (status == GOT_STATUS_DELETE'D')
4017 return NULL((void*)0);
4018 return (*a->progress_cb)(a->progress_arg, GOT_STATUS_DELETE'D',
4019 staged_status, relpath);
4020}
4021
4022const struct got_error *
4023got_worktree_schedule_delete(struct got_worktree *worktree,
4024 struct got_pathlist_head *paths, int delete_local_mods,
4025 const char *status_codes,
4026 got_worktree_delete_cb progress_cb, void *progress_arg,
4027 struct got_repository *repo, int keep_on_disk)
4028{
4029 struct got_fileindex *fileindex = NULL((void*)0);
4030 char *fileindex_path = NULL((void*)0);
4031 const struct got_error *err = NULL((void*)0), *sync_err, *unlockerr;
4032 struct got_pathlist_entry *pe;
4033 struct schedule_deletion_args sda;
4034
4035 err = lock_worktree(worktree, LOCK_EX0x02);
4036 if (err)
4037 return err;
4038
4039 err = open_fileindex(&fileindex, &fileindex_path, worktree);
4040 if (err)
4041 goto done;
4042
4043 sda.worktree = worktree;
4044 sda.fileindex = fileindex;
4045 sda.progress_cb = progress_cb;
4046 sda.progress_arg = progress_arg;
4047 sda.repo = repo;
4048 sda.delete_local_mods = delete_local_mods;
4049 sda.keep_on_disk = keep_on_disk;
4050 sda.status_codes = status_codes;
4051
4052 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
4053 err = worktree_status(worktree, pe->path, fileindex, repo,
4054 schedule_for_deletion, &sda, NULL((void*)0), NULL((void*)0), 0, 1);
4055 if (err)
4056 break;
4057 }
4058 sync_err = sync_fileindex(fileindex, fileindex_path);
4059 if (sync_err && err == NULL((void*)0))
4060 err = sync_err;
4061done:
4062 free(fileindex_path);
4063 if (fileindex)
4064 got_fileindex_free(fileindex);
4065 unlockerr = lock_worktree(worktree, LOCK_SH0x01);
4066 if (unlockerr && err == NULL((void*)0))
4067 err = unlockerr;
4068 return err;
4069}
4070
4071static const struct got_error *
4072copy_one_line(FILE *infile, FILE *outfile, FILE *rejectfile)
4073{
4074 const struct got_error *err = NULL((void*)0);
4075 char *line = NULL((void*)0);
4076 size_t linesize = 0, n;
4077 ssize_t linelen;
4078
4079 linelen = getline(&line, &linesize, infile);
4080 if (linelen == -1) {
4081 if (ferror(infile)(!__isthreaded ? (((infile)->_flags & 0x0040) != 0) : (
ferror)(infile))
) {
4082 err = got_error_from_errno("getline");
4083 goto done;
4084 }
4085 return NULL((void*)0);
4086 }
4087 if (outfile) {
4088 n = fwrite(line, 1, linelen, outfile);
4089 if (n != linelen) {
4090 err = got_ferror(outfile, GOT_ERR_IO6);
4091 goto done;
4092 }
4093 }
4094 if (rejectfile) {
4095 n = fwrite(line, 1, linelen, rejectfile);
4096 if (n != linelen)
4097 err = got_ferror(outfile, GOT_ERR_IO6);
4098 }
4099done:
4100 free(line);
4101 return err;
4102}
4103
4104static const struct got_error *
4105skip_one_line(FILE *f)
4106{
4107 char *line = NULL((void*)0);
4108 size_t linesize = 0;
4109 ssize_t linelen;
4110
4111 linelen = getline(&line, &linesize, f);
4112 if (linelen == -1) {
4113 if (ferror(f)(!__isthreaded ? (((f)->_flags & 0x0040) != 0) : (ferror
)(f))
)
4114 return got_error_from_errno("getline");
4115 return NULL((void*)0);
4116 }
4117 free(line);
4118 return NULL((void*)0);
4119}
4120
4121static const struct got_error *
4122copy_change(FILE *f1, FILE *f2, int *line_cur1, int *line_cur2,
4123 int start_old, int end_old, int start_new, int end_new,
4124 FILE *outfile, FILE *rejectfile)
4125 {
4126 const struct got_error *err;
4127
4128 /* Copy old file's lines leading up to patch. */
4129 while (!feof(f1)(!__isthreaded ? (((f1)->_flags & 0x0020) != 0) : (feof
)(f1))
&& *line_cur1 < start_old) {
4130 err = copy_one_line(f1, outfile, NULL((void*)0));
4131 if (err)
4132 return err;
4133 (*line_cur1)++;
4134 }
4135 /* Skip new file's lines leading up to patch. */
4136 while (!feof(f2)(!__isthreaded ? (((f2)->_flags & 0x0020) != 0) : (feof
)(f2))
&& *line_cur2 < start_new) {
4137 if (rejectfile)
4138 err = copy_one_line(f2, NULL((void*)0), rejectfile);
4139 else
4140 err = skip_one_line(f2);
4141 if (err)
4142 return err;
4143 (*line_cur2)++;
4144 }
4145 /* Copy patched lines. */
4146 while (!feof(f2)(!__isthreaded ? (((f2)->_flags & 0x0020) != 0) : (feof
)(f2))
&& *line_cur2 <= end_new) {
4147 err = copy_one_line(f2, outfile, NULL((void*)0));
4148 if (err)
4149 return err;
4150 (*line_cur2)++;
4151 }
4152 /* Skip over old file's replaced lines. */
4153 while (!feof(f1)(!__isthreaded ? (((f1)->_flags & 0x0020) != 0) : (feof
)(f1))
&& *line_cur1 <= end_old) {
4154 if (rejectfile)
4155 err = copy_one_line(f1, NULL((void*)0), rejectfile);
4156 else
4157 err = skip_one_line(f1);
4158 if (err)
4159 return err;
4160 (*line_cur1)++;
4161 }
4162
4163 return NULL((void*)0);
4164}
4165
4166static const struct got_error *
4167copy_remaining_content(FILE *f1, FILE *f2, int *line_cur1, int *line_cur2,
4168 FILE *outfile, FILE *rejectfile)
4169{
4170 const struct got_error *err;
4171
4172 if (outfile) {
4173 /* Copy old file's lines until EOF. */
4174 while (!feof(f1)(!__isthreaded ? (((f1)->_flags & 0x0020) != 0) : (feof
)(f1))
) {
4175 err = copy_one_line(f1, outfile, NULL((void*)0));
4176 if (err)
4177 return err;
4178 (*line_cur1)++;
4179 }
4180 }
4181 if (rejectfile) {
4182 /* Copy new file's lines until EOF. */
4183 while (!feof(f2)(!__isthreaded ? (((f2)->_flags & 0x0020) != 0) : (feof
)(f2))
) {
4184 err = copy_one_line(f2, NULL((void*)0), rejectfile);
4185 if (err)
4186 return err;
4187 (*line_cur2)++;
4188 }
4189 }
4190
4191 return NULL((void*)0);
4192}
4193
4194static const struct got_error *
4195apply_or_reject_change(int *choice, int *nchunks_used,
4196 struct diff_result *diff_result, int n,
4197 const char *relpath, FILE *f1, FILE *f2, int *line_cur1, int *line_cur2,
4198 FILE *outfile, FILE *rejectfile, int changeno, int nchanges,
4199 got_worktree_patch_cb patch_cb, void *patch_arg)
4200{
4201 const struct got_error *err = NULL((void*)0);
4202 struct diff_chunk_context cc = {};
4203 int start_old, end_old, start_new, end_new;
4204 FILE *hunkfile;
4205 struct diff_output_unidiff_state *diff_state;
4206 struct diff_input_info diff_info;
4207 int rc;
4208
4209 *choice = GOT_PATCH_CHOICE_NONE0;
4210
4211 /* Get changed line numbers without context lines for copy_change(). */
4212 diff_chunk_context_load_change(&cc, NULL((void*)0), diff_result, n, 0);
4213 start_old = cc.left.start;
4214 end_old = cc.left.end;
4215 start_new = cc.right.start;
4216 end_new = cc.right.end;
4217
4218 /* Get the same change with context lines for display. */
4219 memset(&cc, 0, sizeof(cc));
4220 diff_chunk_context_load_change(&cc, nchunks_used, diff_result, n, 3);
4221
4222 memset(&diff_info, 0, sizeof(diff_info));
4223 diff_info.left_path = relpath;
4224 diff_info.right_path = relpath;
4225
4226 diff_state = diff_output_unidiff_state_alloc();
4227 if (diff_state == NULL((void*)0))
4228 return got_error_set_errno(ENOMEM12,
4229 "diff_output_unidiff_state_alloc");
4230
4231 hunkfile = got_opentemp();
4232 if (hunkfile == NULL((void*)0)) {
4233 err = got_error_from_errno("got_opentemp");
4234 goto done;
4235 }
4236
4237 rc = diff_output_unidiff_chunk(NULL((void*)0), hunkfile, diff_state, &diff_info,
4238 diff_result, &cc);
4239 if (rc != DIFF_RC_OK0) {
4240 err = got_error_set_errno(rc, "diff_output_unidiff_chunk");
4241 goto done;
4242 }
4243
4244 if (fseek(hunkfile, 0L, SEEK_SET0) == -1) {
4245 err = got_ferror(hunkfile, GOT_ERR_IO6);
4246 goto done;
4247 }
4248
4249 err = (*patch_cb)(choice, patch_arg, GOT_STATUS_MODIFY'M', relpath,
4250 hunkfile, changeno, nchanges);
4251 if (err)
4252 goto done;
4253
4254 switch (*choice) {
4255 case GOT_PATCH_CHOICE_YES1:
4256 err = copy_change(f1, f2, line_cur1, line_cur2, start_old,
4257 end_old, start_new, end_new, outfile, rejectfile);
4258 break;
4259 case GOT_PATCH_CHOICE_NO2:
4260 err = copy_change(f1, f2, line_cur1, line_cur2, start_old,
4261 end_old, start_new, end_new, rejectfile, outfile);
4262 break;
4263 case GOT_PATCH_CHOICE_QUIT3:
4264 break;
4265 default:
4266 err = got_error(GOT_ERR_PATCH_CHOICE107);
4267 break;
4268 }
4269done:
4270 diff_output_unidiff_state_free(diff_state);
4271 if (hunkfile && fclose(hunkfile) == EOF(-1) && err == NULL((void*)0))
4272 err = got_error_from_errno("fclose");
4273 return err;
4274}
4275
4276struct revert_file_args {
4277 struct got_worktree *worktree;
4278 struct got_fileindex *fileindex;
4279 got_worktree_checkout_cb progress_cb;
4280 void *progress_arg;
4281 got_worktree_patch_cb patch_cb;
4282 void *patch_arg;
4283 struct got_repository *repo;
4284};
4285
4286static const struct got_error *
4287create_patched_content(char **path_outfile, int reverse_patch,
4288 struct got_object_id *blob_id, const char *path2,
4289 int dirfd2, const char *de_name2,
4290 const char *relpath, struct got_repository *repo,
4291 got_worktree_patch_cb patch_cb, void *patch_arg)
4292{
4293 const struct got_error *err, *free_err;
4294 struct got_blob_object *blob = NULL((void*)0);
4295 FILE *f1 = NULL((void*)0), *f2 = NULL((void*)0), *outfile = NULL((void*)0);
4296 int fd2 = -1;
4297 char link_target[PATH_MAX1024];
4298 ssize_t link_len = 0;
4299 char *path1 = NULL((void*)0), *id_str = NULL((void*)0);
4300 struct stat sb2;
4301 struct got_diffreg_result *diffreg_result = NULL((void*)0);
4302 int line_cur1 = 1, line_cur2 = 1, have_content = 0;
4303 int i = 0, n = 0, nchunks_used = 0, nchanges = 0;
4304
4305 *path_outfile = NULL((void*)0);
4306
4307 err = got_object_id_str(&id_str, blob_id);
4308 if (err)
4309 return err;
4310
4311 if (dirfd2 != -1) {
4312 fd2 = openat(dirfd2, de_name2, O_RDONLY0x0000 | O_NOFOLLOW0x0100);
4313 if (fd2 == -1) {
4314 if (errno(*__errno()) != ELOOP62) {
4315 err = got_error_from_errno2("openat", path2);
4316 goto done;
4317 }
4318 link_len = readlinkat(dirfd2, de_name2,
4319 link_target, sizeof(link_target));
4320 if (link_len == -1)
4321 return got_error_from_errno2("readlinkat", path2);
4322 sb2.st_mode = S_IFLNK0120000;
4323 sb2.st_size = link_len;
4324 }
4325 } else {
4326 fd2 = open(path2, O_RDONLY0x0000 | O_NOFOLLOW0x0100);
4327 if (fd2 == -1) {
4328 if (errno(*__errno()) != ELOOP62) {
4329 err = got_error_from_errno2("open", path2);
4330 goto done;
4331 }
4332 link_len = readlink(path2, link_target,
4333 sizeof(link_target));
4334 if (link_len == -1)
4335 return got_error_from_errno2("readlink", path2);
4336 sb2.st_mode = S_IFLNK0120000;
4337 sb2.st_size = link_len;
4338 }
4339 }
4340 if (fd2 != -1) {
4341 if (fstat(fd2, &sb2) == -1) {
4342 err = got_error_from_errno2("fstat", path2);
4343 goto done;
4344 }
4345
4346 f2 = fdopen(fd2, "r");
4347 if (f2 == NULL((void*)0)) {
4348 err = got_error_from_errno2("fdopen", path2);
4349 goto done;
4350 }
4351 fd2 = -1;
4352 } else {
4353 size_t n;
4354 f2 = got_opentemp();
4355 if (f2 == NULL((void*)0)) {
4356 err = got_error_from_errno2("got_opentemp", path2);
4357 goto done;
4358 }
4359 n = fwrite(link_target, 1, link_len, f2);
4360 if (n != link_len) {
4361 err = got_ferror(f2, GOT_ERR_IO6);
4362 goto done;
4363 }
4364 if (fflush(f2) == EOF(-1)) {
4365 err = got_error_from_errno("fflush");
4366 goto done;
4367 }
4368 rewind(f2);
4369 }
4370
4371 err = got_object_open_as_blob(&blob, repo, blob_id, 8192);
4372 if (err)
4373 goto done;
4374
4375 err = got_opentemp_named(&path1, &f1, "got-patched-blob");
4376 if (err)
4377 goto done;
4378
4379 err = got_object_blob_dump_to_file(NULL((void*)0), NULL((void*)0), NULL((void*)0), f1, blob);
4380 if (err)
4381 goto done;
4382
4383 err = got_diff_files(&diffreg_result, f1, id_str, f2, path2, 3, 0, 1,
4384 NULL((void*)0));
4385 if (err)
4386 goto done;
4387
4388 err = got_opentemp_named(path_outfile, &outfile, "got-patched-content");
4389 if (err)
4390 goto done;
4391
4392 if (fseek(f1, 0L, SEEK_SET0) == -1)
4393 return got_ferror(f1, GOT_ERR_IO6);
4394 if (fseek(f2, 0L, SEEK_SET0) == -1)
4395 return got_ferror(f2, GOT_ERR_IO6);
4396
4397 /* Count the number of actual changes in the diff result. */
4398 for (n = 0; n < diffreg_result->result->chunks.len; n += nchunks_used) {
4399 struct diff_chunk_context cc = {};
4400 diff_chunk_context_load_change(&cc, &nchunks_used,
4401 diffreg_result->result, n, 0);
4402 nchanges++;
4403 }
4404 for (n = 0; n < diffreg_result->result->chunks.len; n += nchunks_used) {
4405 int choice;
4406 err = apply_or_reject_change(&choice, &nchunks_used,
4407 diffreg_result->result, n, relpath, f1, f2,
4408 &line_cur1, &line_cur2,
4409 reverse_patch ? NULL((void*)0) : outfile,
4410 reverse_patch ? outfile : NULL((void*)0),
4411 ++i, nchanges, patch_cb, patch_arg);
4412 if (err)
4413 goto done;
4414 if (choice == GOT_PATCH_CHOICE_YES1)
4415 have_content = 1;
4416 else if (choice == GOT_PATCH_CHOICE_QUIT3)
4417 break;
4418 }
4419 if (have_content) {
4420 err = copy_remaining_content(f1, f2, &line_cur1, &line_cur2,
4421 reverse_patch ? NULL((void*)0) : outfile,
4422 reverse_patch ? outfile : NULL((void*)0));
4423 if (err)
4424 goto done;
4425
4426 if (!S_ISLNK(sb2.st_mode)((sb2.st_mode & 0170000) == 0120000)) {
4427 if (fchmod(fileno(outfile)(!__isthreaded ? ((outfile)->_file) : (fileno)(outfile)), sb2.st_mode) == -1) {
4428 err = got_error_from_errno2("fchmod", path2);
4429 goto done;
4430 }
4431 }
4432 }
4433done:
4434 free(id_str);
4435 if (blob)
4436 got_object_blob_close(blob);
4437 free_err = got_diffreg_result_free(diffreg_result);
4438 if (err == NULL((void*)0))
4439 err = free_err;
4440 if (f1 && fclose(f1) == EOF(-1) && err == NULL((void*)0))
4441 err = got_error_from_errno2("fclose", path1);
4442 if (f2 && fclose(f2) == EOF(-1) && err == NULL((void*)0))
4443 err = got_error_from_errno2("fclose", path2);
4444 if (fd2 != -1 && close(fd2) == -1 && err == NULL((void*)0))
4445 err = got_error_from_errno2("close", path2);
4446 if (outfile && fclose(outfile) == EOF(-1) && err == NULL((void*)0))
4447 err = got_error_from_errno2("fclose", *path_outfile);
4448 if (path1 && unlink(path1) == -1 && err == NULL((void*)0))
4449 err = got_error_from_errno2("unlink", path1);
4450 if (err || !have_content) {
4451 if (*path_outfile && unlink(*path_outfile) == -1 && err == NULL((void*)0))
4452 err = got_error_from_errno2("unlink", *path_outfile);
4453 free(*path_outfile);
4454 *path_outfile = NULL((void*)0);
4455 }
4456 free(path1);
4457 return err;
4458}
4459
4460static const struct got_error *
4461revert_file(void *arg, unsigned char status, unsigned char staged_status,
4462 const char *relpath, struct got_object_id *blob_id,
4463 struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4464 int dirfd, const char *de_name)
4465{
4466 struct revert_file_args *a = arg;
4467 const struct got_error *err = NULL((void*)0);
4468 char *parent_path = NULL((void*)0);
4469 struct got_fileindex_entry *ie;
4470 struct got_tree_object *tree = NULL((void*)0);
4471 struct got_object_id *tree_id = NULL((void*)0);
4472 const struct got_tree_entry *te = NULL((void*)0);
4473 char *tree_path = NULL((void*)0), *te_name;
4474 char *ondisk_path = NULL((void*)0), *path_content = NULL((void*)0);
4475 struct got_blob_object *blob = NULL((void*)0);
4476
4477 /* Reverting a staged deletion is a no-op. */
4478 if (status == GOT_STATUS_DELETE'D' &&
4479 staged_status != GOT_STATUS_NO_CHANGE' ')
4480 return NULL((void*)0);
4481
4482 if (status == GOT_STATUS_UNVERSIONED'?')
4483 return (*a->progress_cb)(a->progress_arg,
4484 GOT_STATUS_UNVERSIONED'?', relpath);
4485
4486 ie = got_fileindex_entry_get(a->fileindex, relpath, strlen(relpath));
4487 if (ie == NULL((void*)0))
4488 return got_error_path(relpath, GOT_ERR_BAD_PATH4);
4489
4490 /* Construct in-repository path of tree which contains this blob. */
4491 err = got_path_dirname(&parent_path, ie->path);
4492 if (err) {
4493 if (err->code != GOT_ERR_BAD_PATH4)
4494 goto done;
4495 parent_path = strdup("/");
4496 if (parent_path == NULL((void*)0)) {
4497 err = got_error_from_errno("strdup");
4498 goto done;
4499 }
4500 }
4501 if (got_path_is_root_dir(a->worktree->path_prefix)) {
4502 tree_path = strdup(parent_path);
4503 if (tree_path == NULL((void*)0)) {
4504 err = got_error_from_errno("strdup");
4505 goto done;
4506 }
4507 } else {
4508 if (got_path_is_root_dir(parent_path)) {
4509 tree_path = strdup(a->worktree->path_prefix);
4510 if (tree_path == NULL((void*)0)) {
4511 err = got_error_from_errno("strdup");
4512 goto done;
4513 }
4514 } else {
4515 if (asprintf(&tree_path, "%s/%s",
4516 a->worktree->path_prefix, parent_path) == -1) {
4517 err = got_error_from_errno("asprintf");
4518 goto done;
4519 }
4520 }
4521 }
4522
4523 err = got_object_id_by_path(&tree_id, a->repo,
4524 a->worktree->base_commit_id, tree_path);
4525 if (err) {
4526 if (!(err->code == GOT_ERR_NO_TREE_ENTRY50 &&
4527 (status == GOT_STATUS_ADD'A' ||
4528 staged_status == GOT_STATUS_ADD'A')))
4529 goto done;
4530 } else {
4531 err = got_object_open_as_tree(&tree, a->repo, tree_id);
4532 if (err)
4533 goto done;
4534
4535 err = got_path_basename(&te_name, ie->path);
4536 if (err)
4537 goto done;
4538
4539 te = got_object_tree_find_entry(tree, te_name);
4540 free(te_name);
4541 if (te == NULL((void*)0) && status != GOT_STATUS_ADD'A' &&
4542 staged_status != GOT_STATUS_ADD'A') {
4543 err = got_error_path(ie->path, GOT_ERR_NO_TREE_ENTRY50);
4544 goto done;
4545 }
4546 }
4547
4548 switch (status) {
4549 case GOT_STATUS_ADD'A':
4550 if (a->patch_cb) {
4551 int choice = GOT_PATCH_CHOICE_NONE0;
4552 err = (*a->patch_cb)(&choice, a->patch_arg,
4553 status, ie->path, NULL((void*)0), 1, 1);
4554 if (err)
4555 goto done;
4556 if (choice != GOT_PATCH_CHOICE_YES1)
4557 break;
4558 }
4559 err = (*a->progress_cb)(a->progress_arg, GOT_STATUS_REVERT'R',
4560 ie->path);
4561 if (err)
4562 goto done;
4563 got_fileindex_entry_remove(a->fileindex, ie);
4564 break;
4565 case GOT_STATUS_DELETE'D':
4566 if (a->patch_cb) {
4567 int choice = GOT_PATCH_CHOICE_NONE0;
4568 err = (*a->patch_cb)(&choice, a->patch_arg,
4569 status, ie->path, NULL((void*)0), 1, 1);
4570 if (err)
4571 goto done;
4572 if (choice != GOT_PATCH_CHOICE_YES1)
4573 break;
4574 }
4575 /* fall through */
4576 case GOT_STATUS_MODIFY'M':
4577 case GOT_STATUS_MODE_CHANGE'm':
4578 case GOT_STATUS_CONFLICT'C':
4579 case GOT_STATUS_MISSING'!': {
4580 struct got_object_id id;
4581 if (staged_status == GOT_STATUS_ADD'A' ||
4582 staged_status == GOT_STATUS_MODIFY'M') {
4583 memcpy(id.sha1, ie->staged_blob_sha1,
4584 SHA1_DIGEST_LENGTH20);
4585 } else
4586 memcpy(id.sha1, ie->blob_sha1,
4587 SHA1_DIGEST_LENGTH20);
4588 err = got_object_open_as_blob(&blob, a->repo, &id, 8192);
4589 if (err)
4590 goto done;
4591
4592 if (asprintf(&ondisk_path, "%s/%s",
4593 got_worktree_get_root_path(a->worktree), relpath) == -1) {
4594 err = got_error_from_errno("asprintf");
4595 goto done;
4596 }
4597
4598 if (a->patch_cb && (status == GOT_STATUS_MODIFY'M' ||
4599 status == GOT_STATUS_CONFLICT'C')) {
4600 int is_bad_symlink = 0;
4601 err = create_patched_content(&path_content, 1, &id,
4602 ondisk_path, dirfd, de_name, ie->path, a->repo,
4603 a->patch_cb, a->patch_arg);
4604 if (err || path_content == NULL((void*)0))
4605 break;
4606 if (te && S_ISLNK(te->mode)((te->mode & 0170000) == 0120000)) {
4607 if (unlink(path_content) == -1) {
4608 err = got_error_from_errno2("unlink",
4609 path_content);
4610 break;
4611 }
4612 err = install_symlink(&is_bad_symlink,
4613 a->worktree, ondisk_path, ie->path,
4614 blob, 0, 1, 0, a->repo,
4615 a->progress_cb, a->progress_arg);
4616 } else {
4617 if (rename(path_content, ondisk_path) == -1) {
4618 err = got_error_from_errno3("rename",
4619 path_content, ondisk_path);
4620 goto done;
4621 }
4622 }
4623 } else {
4624 int is_bad_symlink = 0;
4625 if (te && S_ISLNK(te->mode)((te->mode & 0170000) == 0120000)) {
4626 err = install_symlink(&is_bad_symlink,
4627 a->worktree, ondisk_path, ie->path,
4628 blob, 0, 1, 0, a->repo,
4629 a->progress_cb, a->progress_arg);
4630 } else {
4631 err = install_blob(a->worktree, ondisk_path,
4632 ie->path,
4633 te ? te->mode : GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004),
4634 got_fileindex_perms_to_st(ie), blob,
4635 0, 1, 0, 0, a->repo,
4636 a->progress_cb, a->progress_arg);
4637 }
4638 if (err)
4639 goto done;
4640 if (status == GOT_STATUS_DELETE'D' ||
4641 status == GOT_STATUS_MODE_CHANGE'm') {
4642 err = got_fileindex_entry_update(ie,
4643 a->worktree->root_fd, relpath,
4644 blob->id.sha1,
4645 a->worktree->base_commit_id->sha1, 1);
4646 if (err)
4647 goto done;
4648 }
4649 if (is_bad_symlink) {
4650 got_fileindex_entry_filetype_set(ie,
4651 GOT_FILEIDX_MODE_BAD_SYMLINK3);
4652 }
4653 }
4654 break;
4655 }
4656 default:
4657 break;
4658 }
4659done:
4660 free(ondisk_path);
4661 free(path_content);
4662 free(parent_path);
4663 free(tree_path);
4664 if (blob)
4665 got_object_blob_close(blob);
4666 if (tree)
4667 got_object_tree_close(tree);
4668 free(tree_id);
4669 return err;
4670}
4671
4672const struct got_error *
4673got_worktree_revert(struct got_worktree *worktree,
4674 struct got_pathlist_head *paths,
4675 got_worktree_checkout_cb progress_cb, void *progress_arg,
4676 got_worktree_patch_cb patch_cb, void *patch_arg,
4677 struct got_repository *repo)
4678{
4679 struct got_fileindex *fileindex = NULL((void*)0);
4680 char *fileindex_path = NULL((void*)0);
4681 const struct got_error *err = NULL((void*)0), *unlockerr = NULL((void*)0);
4682 const struct got_error *sync_err = NULL((void*)0);
4683 struct got_pathlist_entry *pe;
4684 struct revert_file_args rfa;
4685
4686 err = lock_worktree(worktree, LOCK_EX0x02);
4687 if (err)
4688 return err;
4689
4690 err = open_fileindex(&fileindex, &fileindex_path, worktree);
4691 if (err)
4692 goto done;
4693
4694 rfa.worktree = worktree;
4695 rfa.fileindex = fileindex;
4696 rfa.progress_cb = progress_cb;
4697 rfa.progress_arg = progress_arg;
4698 rfa.patch_cb = patch_cb;
4699 rfa.patch_arg = patch_arg;
4700 rfa.repo = repo;
4701 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
4702 err = worktree_status(worktree, pe->path, fileindex, repo,
4703 revert_file, &rfa, NULL((void*)0), NULL((void*)0), 0, 0);
4704 if (err)
4705 break;
4706 }
4707 sync_err = sync_fileindex(fileindex, fileindex_path);
4708 if (sync_err && err == NULL((void*)0))
4709 err = sync_err;
4710done:
4711 free(fileindex_path);
4712 if (fileindex)
4713 got_fileindex_free(fileindex);
4714 unlockerr = lock_worktree(worktree, LOCK_SH0x01);
4715 if (unlockerr && err == NULL((void*)0))
4716 err = unlockerr;
4717 return err;
4718}
4719
4720static void
4721free_commitable(struct got_commitable *ct)
4722{
4723 free(ct->path);
4724 free(ct->in_repo_path);
4725 free(ct->ondisk_path);
4726 free(ct->blob_id);
4727 free(ct->base_blob_id);
4728 free(ct->staged_blob_id);
4729 free(ct->base_commit_id);
4730 free(ct);
4731}
4732
4733struct collect_commitables_arg {
4734 struct got_pathlist_head *commitable_paths;
4735 struct got_repository *repo;
4736 struct got_worktree *worktree;
4737 struct got_fileindex *fileindex;
4738 int have_staged_files;
4739 int allow_bad_symlinks;
4740};
4741
4742static const struct got_error *
4743collect_commitables(void *arg, unsigned char status,
4744 unsigned char staged_status, const char *relpath,
4745 struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
4746 struct got_object_id *commit_id, int dirfd, const char *de_name)
4747{
4748 struct collect_commitables_arg *a = arg;
4749 const struct got_error *err = NULL((void*)0);
4750 struct got_commitable *ct = NULL((void*)0);
4751 struct got_pathlist_entry *new = NULL((void*)0);
4752 char *parent_path = NULL((void*)0), *path = NULL((void*)0);
4753 struct stat sb;
4754
4755 if (a->have_staged_files) {
4756 if (staged_status != GOT_STATUS_MODIFY'M' &&
4757 staged_status != GOT_STATUS_ADD'A' &&
4758 staged_status != GOT_STATUS_DELETE'D')
4759 return NULL((void*)0);
4760 } else {
4761 if (status == GOT_STATUS_CONFLICT'C')
4762 return got_error(GOT_ERR_COMMIT_CONFLICT69);
4763
4764 if (status != GOT_STATUS_MODIFY'M' &&
4765 status != GOT_STATUS_MODE_CHANGE'm' &&
4766 status != GOT_STATUS_ADD'A' &&
4767 status != GOT_STATUS_DELETE'D')
4768 return NULL((void*)0);
4769 }
4770
4771 if (asprintf(&path, "/%s", relpath) == -1) {
4772 err = got_error_from_errno("asprintf");
4773 goto done;
4774 }
4775 if (strcmp(path, "/") == 0) {
4776 parent_path = strdup("");
4777 if (parent_path == NULL((void*)0))
4778 return got_error_from_errno("strdup");
4779 } else {
4780 err = got_path_dirname(&parent_path, path);
4781 if (err)
4782 return err;
4783 }
4784
4785 ct = calloc(1, sizeof(*ct));
4786 if (ct == NULL((void*)0)) {
4787 err = got_error_from_errno("calloc");
4788 goto done;
4789 }
4790
4791 if (asprintf(&ct->ondisk_path, "%s/%s", a->worktree->root_path,
4792 relpath) == -1) {
4793 err = got_error_from_errno("asprintf");
4794 goto done;
4795 }
4796
4797 if (staged_status == GOT_STATUS_ADD'A' ||
4798 staged_status == GOT_STATUS_MODIFY'M') {
4799 struct got_fileindex_entry *ie;
4800 ie = got_fileindex_entry_get(a->fileindex, path, strlen(path));
4801 switch (got_fileindex_entry_staged_filetype_get(ie)) {
4802 case GOT_FILEIDX_MODE_REGULAR_FILE1:
4803 case GOT_FILEIDX_MODE_BAD_SYMLINK3:
4804 ct->mode = S_IFREG0100000;
4805 break;
4806 case GOT_FILEIDX_MODE_SYMLINK2:
4807 ct->mode = S_IFLNK0120000;
4808 break;
4809 default:
4810 err = got_error_path(path, GOT_ERR_BAD_FILETYPE3);
4811 goto done;
4812 }
4813 ct->mode |= got_fileindex_entry_perms_get(ie);
4814 } else if (status != GOT_STATUS_DELETE'D' &&
4815 staged_status != GOT_STATUS_DELETE'D') {
4816 if (dirfd != -1) {
4817 if (fstatat(dirfd, de_name, &sb,
4818 AT_SYMLINK_NOFOLLOW0x02) == -1) {
4819 err = got_error_from_errno2("fstatat",
4820 ct->ondisk_path);
4821 goto done;
4822 }
4823 } else if (lstat(ct->ondisk_path, &sb) == -1) {
4824 err = got_error_from_errno2("lstat", ct->ondisk_path);
4825 goto done;
4826 }
4827 ct->mode = sb.st_mode;
4828 }
4829
4830 if (asprintf(&ct->in_repo_path, "%s%s%s", a->worktree->path_prefix,
4831 got_path_is_root_dir(a->worktree->path_prefix) ? "" : "/",
4832 relpath) == -1) {
4833 err = got_error_from_errno("asprintf");
4834 goto done;
4835 }
4836
4837 if (S_ISLNK(ct->mode)((ct->mode & 0170000) == 0120000) && staged_status == GOT_STATUS_NO_CHANGE' ' &&
4838 status == GOT_STATUS_ADD'A' && !a->allow_bad_symlinks) {
4839 int is_bad_symlink;
4840 char target_path[PATH_MAX1024];
4841 ssize_t target_len;
4842 target_len = readlink(ct->ondisk_path, target_path,
4843 sizeof(target_path));
4844 if (target_len == -1) {
4845 err = got_error_from_errno2("readlink",
4846 ct->ondisk_path);
4847 goto done;
4848 }
4849 err = is_bad_symlink_target(&is_bad_symlink, target_path,
4850 target_len, ct->ondisk_path, a->worktree->root_path);
4851 if (err)
4852 goto done;
4853 if (is_bad_symlink) {
4854 err = got_error_path(ct->ondisk_path,
4855 GOT_ERR_BAD_SYMLINK129);
4856 goto done;
4857 }
4858 }
4859
4860
4861 ct->status = status;
4862 ct->staged_status = staged_status;
4863 ct->blob_id = NULL((void*)0); /* will be filled in when blob gets created */
4864 if (ct->status != GOT_STATUS_ADD'A' &&
4865 ct->staged_status != GOT_STATUS_ADD'A') {
4866 ct->base_blob_id = got_object_id_dup(blob_id);
4867 if (ct->base_blob_id == NULL((void*)0)) {
4868 err = got_error_from_errno("got_object_id_dup");
4869 goto done;
4870 }
4871 ct->base_commit_id = got_object_id_dup(commit_id);
4872 if (ct->base_commit_id == NULL((void*)0)) {
4873 err = got_error_from_errno("got_object_id_dup");
4874 goto done;
4875 }
4876 }
4877 if (ct->staged_status == GOT_STATUS_ADD'A' ||
4878 ct->staged_status == GOT_STATUS_MODIFY'M') {
4879 ct->staged_blob_id = got_object_id_dup(staged_blob_id);
4880 if (ct->staged_blob_id == NULL((void*)0)) {
4881 err = got_error_from_errno("got_object_id_dup");
4882 goto done;
4883 }
4884 }
4885 ct->path = strdup(path);
4886 if (ct->path == NULL((void*)0)) {
4887 err = got_error_from_errno("strdup");
4888 goto done;
4889 }
4890 err = got_pathlist_insert(&new, a->commitable_paths, ct->path, ct);
4891done:
4892 if (ct && (err || new == NULL((void*)0)))
4893 free_commitable(ct);
4894 free(parent_path);
4895 free(path);
4896 return err;
4897}
4898
4899static const struct got_error *write_tree(struct got_object_id **, int *,
4900 struct got_tree_object *, const char *, struct got_pathlist_head *,
4901 got_worktree_status_cb status_cb, void *status_arg,
4902 struct got_repository *);
4903
4904static const struct got_error *
4905write_subtree(struct got_object_id **new_subtree_id, int *nentries,
4906 struct got_tree_entry *te, const char *parent_path,
4907 struct got_pathlist_head *commitable_paths,
4908 got_worktree_status_cb status_cb, void *status_arg,
4909 struct got_repository *repo)
4910{
4911 const struct got_error *err = NULL((void*)0);
4912 struct got_tree_object *subtree;
4913 char *subpath;
4914
4915 if (asprintf(&subpath, "%s%s%s", parent_path,
66
Assuming the condition is true
67
Taking true branch
4916 got_path_is_root_dir(parent_path) ? "" : "/", te->name) == -1)
64
Assuming the condition is false
65
'?' condition is false
4917 return got_error_from_errno("asprintf");
68
Returning without writing to '*nentries'
69
Returning pointer, which participates in a condition later
4918
4919 err = got_object_open_as_tree(&subtree, repo, &te->id);
4920 if (err)
4921 return err;
4922
4923 err = write_tree(new_subtree_id, nentries, subtree, subpath,
4924 commitable_paths, status_cb, status_arg, repo);
4925 got_object_tree_close(subtree);
4926 free(subpath);
4927 return err;
4928}
4929
4930static const struct got_error *
4931match_ct_parent_path(int *match, struct got_commitable *ct, const char *path)
4932{
4933 const struct got_error *err = NULL((void*)0);
4934 char *ct_parent_path = NULL((void*)0);
4935
4936 *match = 0;
4937
4938 if (strchr(ct->in_repo_path, '/') == NULL((void*)0)) {
4939 *match = got_path_is_root_dir(path);
4940 return NULL((void*)0);
4941 }
4942
4943 err = got_path_dirname(&ct_parent_path, ct->in_repo_path);
4944 if (err)
4945 return err;
4946 *match = (strcmp(path, ct_parent_path) == 0);
4947 free(ct_parent_path);
4948 return err;
4949}
4950
4951static mode_t
4952get_ct_file_mode(struct got_commitable *ct)
4953{
4954 if (S_ISLNK(ct->mode)((ct->mode & 0170000) == 0120000))
4955 return S_IFLNK0120000;
4956
4957 return S_IFREG0100000 | (ct->mode & ((S_IRWXU0000700 | S_IRWXG0000070 | S_IRWXO0000007)));
4958}
4959
4960static const struct got_error *
4961alloc_modified_blob_tree_entry(struct got_tree_entry **new_te,
4962 struct got_tree_entry *te, struct got_commitable *ct)
4963{
4964 const struct got_error *err = NULL((void*)0);
4965
4966 *new_te = NULL((void*)0);
4967
4968 err = got_object_tree_entry_dup(new_te, te);
4969 if (err)
4970 goto done;
4971
4972 (*new_te)->mode = get_ct_file_mode(ct);
4973
4974 if (ct->staged_status == GOT_STATUS_MODIFY'M')
4975 memcpy(&(*new_te)->id, ct->staged_blob_id,
4976 sizeof((*new_te)->id));
4977 else
4978 memcpy(&(*new_te)->id, ct->blob_id, sizeof((*new_te)->id));
4979done:
4980 if (err && *new_te) {
4981 free(*new_te);
4982 *new_te = NULL((void*)0);
4983 }
4984 return err;
4985}
4986
4987static const struct got_error *
4988alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
4989 struct got_commitable *ct)
4990{
4991 const struct got_error *err = NULL((void*)0);
4992 char *ct_name = NULL((void*)0);
4993
4994 *new_te = NULL((void*)0);
4995
4996 *new_te = calloc(1, sizeof(**new_te));
4997 if (*new_te == NULL((void*)0))
4998 return got_error_from_errno("calloc");
4999
5000 err = got_path_basename(&ct_name, ct->path);
5001 if (err)
5002 goto done;
5003 if (strlcpy((*new_te)->name, ct_name, sizeof((*new_te)->name)) >=
5004 sizeof((*new_te)->name)) {
5005 err = got_error(GOT_ERR_NO_SPACE9);
5006 goto done;
5007 }
5008
5009 (*new_te)->mode = get_ct_file_mode(ct);
5010
5011 if (ct->staged_status == GOT_STATUS_ADD'A')
5012 memcpy(&(*new_te)->id, ct->staged_blob_id,
5013 sizeof((*new_te)->id));
5014 else
5015 memcpy(&(*new_te)->id, ct->blob_id, sizeof((*new_te)->id));
5016done:
5017 free(ct_name);
5018 if (err && *new_te) {
5019 free(*new_te);
5020 *new_te = NULL((void*)0);
5021 }
5022 return err;
5023}
5024
5025static const struct got_error *
5026insert_tree_entry(struct got_tree_entry *new_te,
5027 struct got_pathlist_head *paths)
5028{
5029 const struct got_error *err = NULL((void*)0);
5030 struct got_pathlist_entry *new_pe;
5031
5032 err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
5033 if (err)
5034 return err;
5035 if (new_pe == NULL((void*)0))
5036 return got_error(GOT_ERR_TREE_DUP_ENTRY58);
5037 return NULL((void*)0);
5038}
5039
5040static const struct got_error *
5041report_ct_status(struct got_commitable *ct,
5042 got_worktree_status_cb status_cb, void *status_arg)
5043{
5044 const char *ct_path = ct->path;
5045 unsigned char status;
5046
5047 while (ct_path[0] == '/')
5048 ct_path++;
5049
5050 if (ct->staged_status != GOT_STATUS_NO_CHANGE' ')
5051 status = ct->staged_status;
5052 else
5053 status = ct->status;
5054
5055 return (*status_cb)(status_arg, status, GOT_STATUS_NO_CHANGE' ',
5056 ct_path, ct->blob_id, NULL((void*)0), NULL((void*)0), -1, NULL((void*)0));
5057}
5058
5059static const struct got_error *
5060match_modified_subtree(int *modified, struct got_tree_entry *te,
5061 const char *base_tree_path, struct got_pathlist_head *commitable_paths)
5062{
5063 const struct got_error *err = NULL((void*)0);
5064 struct got_pathlist_entry *pe;
5065 char *te_path;
5066
5067 *modified = 0;
5068
5069 if (asprintf(&te_path, "%s%s%s", base_tree_path,
5070 got_path_is_root_dir(base_tree_path) ? "" : "/",
5071 te->name) == -1)
5072 return got_error_from_errno("asprintf");
5073
5074 TAILQ_FOREACH(pe, commitable_paths, entry)for((pe) = ((commitable_paths)->tqh_first); (pe) != ((void
*)0); (pe) = ((pe)->entry.tqe_next))
{
5075 struct got_commitable *ct = pe->data;
5076 *modified = got_path_is_child(ct->in_repo_path, te_path,
5077 strlen(te_path));
5078 if (*modified)
5079 break;
5080 }
5081
5082 free(te_path);
5083 return err;
5084}
5085
5086static const struct got_error *
5087match_deleted_or_modified_ct(struct got_commitable **ctp,
5088 struct got_tree_entry *te, const char *base_tree_path,
5089 struct got_pathlist_head *commitable_paths)
5090{
5091 const struct got_error *err = NULL((void*)0);
5092 struct got_pathlist_entry *pe;
5093
5094 *ctp = NULL((void*)0);
5095
5096 TAILQ_FOREACH(pe, commitable_paths, entry)for((pe) = ((commitable_paths)->tqh_first); (pe) != ((void
*)0); (pe) = ((pe)->entry.tqe_next))
{
5097 struct got_commitable *ct = pe->data;
5098 char *ct_name = NULL((void*)0);
5099 int path_matches;
5100
5101 if (ct->staged_status == GOT_STATUS_NO_CHANGE' ') {
5102 if (ct->status != GOT_STATUS_MODIFY'M' &&
5103 ct->status != GOT_STATUS_MODE_CHANGE'm' &&
5104 ct->status != GOT_STATUS_DELETE'D')
5105 continue;
5106 } else {
5107 if (ct->staged_status != GOT_STATUS_MODIFY'M' &&
5108 ct->staged_status != GOT_STATUS_DELETE'D')
5109 continue;
5110 }
5111
5112 if (got_object_id_cmp(ct->base_blob_id, &te->id) != 0)
5113 continue;
5114
5115 err = match_ct_parent_path(&path_matches, ct, base_tree_path);
5116 if (err)
5117 return err;
5118 if (!path_matches)
5119 continue;
5120
5121 err = got_path_basename(&ct_name, pe->path);
5122 if (err)
5123 return err;
5124
5125 if (strcmp(te->name, ct_name) != 0) {
5126 free(ct_name);
5127 continue;
5128 }
5129 free(ct_name);
5130
5131 *ctp = ct;
5132 break;
5133 }
5134
5135 return err;
5136}
5137
5138static const struct got_error *
5139make_subtree_for_added_blob(struct got_tree_entry **new_tep,
5140 const char *child_path, const char *path_base_tree,
5141 struct got_pathlist_head *commitable_paths,
5142 got_worktree_status_cb status_cb, void *status_arg,
5143 struct got_repository *repo)
5144{
5145 const struct got_error *err = NULL((void*)0);
5146 struct got_tree_entry *new_te;
5147 char *subtree_path;
5148 struct got_object_id *id = NULL((void*)0);
5149 int nentries;
5150
5151 *new_tep = NULL((void*)0);
5152
5153 if (asprintf(&subtree_path, "%s%s%s", path_base_tree,
5154 got_path_is_root_dir(path_base_tree) ? "" : "/",
5155 child_path) == -1)
5156 return got_error_from_errno("asprintf");
5157
5158 new_te = calloc(1, sizeof(*new_te));
5159 if (new_te == NULL((void*)0))
5160 return got_error_from_errno("calloc");
5161 new_te->mode = S_IFDIR0040000;
5162
5163 if (strlcpy(new_te->name, child_path, sizeof(new_te->name)) >=
5164 sizeof(new_te->name)) {
5165 err = got_error(GOT_ERR_NO_SPACE9);
5166 goto done;
5167 }
5168 err = write_tree(&id, &nentries, NULL((void*)0), subtree_path,
5169 commitable_paths, status_cb, status_arg, repo);
5170 if (err) {
5171 free(new_te);
5172 goto done;
5173 }
5174 memcpy(&new_te->id, id, sizeof(new_te->id));
5175done:
5176 free(id);
5177 free(subtree_path);
5178 if (err == NULL((void*)0))
5179 *new_tep = new_te;
5180 return err;
5181}
5182
5183static const struct got_error *
5184write_tree(struct got_object_id **new_tree_id, int *nentries,
5185 struct got_tree_object *base_tree, const char *path_base_tree,
5186 struct got_pathlist_head *commitable_paths,
5187 got_worktree_status_cb status_cb, void *status_arg,
5188 struct got_repository *repo)
5189{
5190 const struct got_error *err = NULL((void*)0);
5191 struct got_pathlist_head paths;
5192 struct got_tree_entry *te, *new_te = NULL((void*)0);
5193 struct got_pathlist_entry *pe;
5194
5195 TAILQ_INIT(&paths)do { (&paths)->tqh_first = ((void*)0); (&paths)->
tqh_last = &(&paths)->tqh_first; } while (0)
;
41
Loop condition is false. Exiting loop
5196 *nentries = 0;
5197
5198 /* Insert, and recurse into, newly added entries first. */
5199 TAILQ_FOREACH(pe, commitable_paths, entry)for((pe) = ((commitable_paths)->tqh_first); (pe) != ((void
*)0); (pe) = ((pe)->entry.tqe_next))
{
42
Loop condition is true. Entering loop body
47
Loop condition is false. Execution continues on line 5249
5200 struct got_commitable *ct = pe->data;
5201 char *child_path = NULL((void*)0), *slash;
5202
5203 if ((ct->status != GOT_STATUS_ADD'A' &&
43
Assuming the condition is false
45
Taking true branch
5204 ct->staged_status != GOT_STATUS_ADD'A') ||
5205 (ct->flags & GOT_COMMITABLE_ADDED0x01))
44
Assuming the condition is true
5206 continue;
46
Execution continues on line 5199
5207
5208 if (!got_path_is_child(ct->in_repo_path, path_base_tree,
5209 strlen(path_base_tree)))
5210 continue;
5211
5212 err = got_path_skip_common_ancestor(&child_path, path_base_tree,
5213 ct->in_repo_path);
5214 if (err)
5215 goto done;
5216
5217 slash = strchr(child_path, '/');
5218 if (slash == NULL((void*)0)) {
5219 err = alloc_added_blob_tree_entry(&new_te, ct);
5220 if (err)
5221 goto done;
5222 err = report_ct_status(ct, status_cb, status_arg);
5223 if (err)
5224 goto done;
5225 ct->flags |= GOT_COMMITABLE_ADDED0x01;
5226 err = insert_tree_entry(new_te, &paths);
5227 if (err)
5228 goto done;
5229 (*nentries)++;
5230 } else {
5231 *slash = '\0'; /* trim trailing path components */
5232 if (base_tree == NULL((void*)0) ||
5233 got_object_tree_find_entry(base_tree, child_path)
5234 == NULL((void*)0)) {
5235 err = make_subtree_for_added_blob(&new_te,
5236 child_path, path_base_tree,
5237 commitable_paths, status_cb, status_arg,
5238 repo);
5239 if (err)
5240 goto done;
5241 err = insert_tree_entry(new_te, &paths);
5242 if (err)
5243 goto done;
5244 (*nentries)++;
5245 }
5246 }
5247 }
5248
5249 if (base_tree) {
48
Assuming 'base_tree' is non-null
49
Taking true branch
5250 int i, nbase_entries;
5251 /* Handle modified and deleted entries. */
5252 nbase_entries = got_object_tree_get_nentries(base_tree);
5253 for (i = 0; i < nbase_entries; i++) {
50
Assuming 'i' is < 'nbase_entries'
51
Loop condition is true. Entering loop body
5254 struct got_commitable *ct = NULL((void*)0);
5255
5256 te = got_object_tree_get_entry(base_tree, i);
5257 if (got_object_tree_entry_is_submodule(te)) {
52
Assuming the condition is false
53
Taking false branch
5258 /* Entry is a submodule; just copy it. */
5259 err = got_object_tree_entry_dup(&new_te, te);
5260 if (err)
5261 goto done;
5262 err = insert_tree_entry(new_te, &paths);
5263 if (err)
5264 goto done;
5265 (*nentries)++;
5266 continue;
5267 }
5268
5269 if (S_ISDIR(te->mode)((te->mode & 0170000) == 0040000)) {
54
Assuming the condition is true
55
Taking true branch
5270 int modified;
5271 err = got_object_tree_entry_dup(&new_te, te);
5272 if (err)
56
Assuming 'err' is null
57
Taking false branch
5273 goto done;
5274 err = match_modified_subtree(&modified, te,
5275 path_base_tree, commitable_paths);
5276 if (err)
58
Assuming 'err' is null
59
Taking false branch
5277 goto done;
5278 /* Avoid recursion into unmodified subtrees. */
5279 if (modified) {
60
Assuming 'modified' is not equal to 0
61
Taking true branch
5280 struct got_object_id *new_id;
5281 int nsubentries;
62
'nsubentries' declared without an initial value
5282 err = write_subtree(&new_id,
63
Calling 'write_subtree'
70
Returning from 'write_subtree'
5283 &nsubentries, te,
5284 path_base_tree, commitable_paths,
5285 status_cb, status_arg, repo);
5286 if (err)
71
Assuming 'err' is null
72
Taking false branch
5287 goto done;
5288 if (nsubentries == 0) {
73
The left operand of '==' is a garbage value
5289 /* All entries were deleted. */
5290 free(new_id);
5291 continue;
5292 }
5293 memcpy(&new_te->id, new_id,
5294 sizeof(new_te->id));
5295 free(new_id);
5296 }
5297 err = insert_tree_entry(new_te, &paths);
5298 if (err)
5299 goto done;
5300 (*nentries)++;
5301 continue;
5302 }
5303
5304 err = match_deleted_or_modified_ct(&ct, te,
5305 path_base_tree, commitable_paths);
5306 if (err)
5307 goto done;
5308 if (ct) {
5309 /* NB: Deleted entries get dropped here. */
5310 if (ct->status == GOT_STATUS_MODIFY'M' ||
5311 ct->status == GOT_STATUS_MODE_CHANGE'm' ||
5312 ct->staged_status == GOT_STATUS_MODIFY'M') {
5313 err = alloc_modified_blob_tree_entry(
5314 &new_te, te, ct);
5315 if (err)
5316 goto done;
5317 err = insert_tree_entry(new_te, &paths);
5318 if (err)
5319 goto done;
5320 (*nentries)++;
5321 }
5322 err = report_ct_status(ct, status_cb,
5323 status_arg);
5324 if (err)
5325 goto done;
5326 } else {
5327 /* Entry is unchanged; just copy it. */
5328 err = got_object_tree_entry_dup(&new_te, te);
5329 if (err)
5330 goto done;
5331 err = insert_tree_entry(new_te, &paths);
5332 if (err)
5333 goto done;
5334 (*nentries)++;
5335 }
5336 }
5337 }
5338
5339 /* Write new list of entries; deleted entries have been dropped. */
5340 err = got_object_tree_create(new_tree_id, &paths, *nentries, repo);
5341done:
5342 got_pathlist_free(&paths);
5343 return err;
5344}
5345
5346static const struct got_error *
5347update_fileindex_after_commit(struct got_worktree *worktree,
5348 struct got_pathlist_head *commitable_paths,
5349 struct got_object_id *new_base_commit_id,
5350 struct got_fileindex *fileindex, int have_staged_files)
5351{
5352 const struct got_error *err = NULL((void*)0);
5353 struct got_pathlist_entry *pe;
5354 char *relpath = NULL((void*)0);
5355
5356 TAILQ_FOREACH(pe, commitable_paths, entry)for((pe) = ((commitable_paths)->tqh_first); (pe) != ((void
*)0); (pe) = ((pe)->entry.tqe_next))
{
5357 struct got_fileindex_entry *ie;
5358 struct got_commitable *ct = pe->data;
5359
5360 ie = got_fileindex_entry_get(fileindex, pe->path, pe->path_len);
5361
5362 err = got_path_skip_common_ancestor(&relpath,
5363 worktree->root_path, ct->ondisk_path);
5364 if (err)
5365 goto done;
5366
5367 if (ie) {
5368 if (ct->status == GOT_STATUS_DELETE'D' ||
5369 ct->staged_status == GOT_STATUS_DELETE'D') {
5370 got_fileindex_entry_remove(fileindex, ie);
5371 } else if (ct->staged_status == GOT_STATUS_ADD'A' ||
5372 ct->staged_status == GOT_STATUS_MODIFY'M') {
5373 got_fileindex_entry_stage_set(ie,
5374 GOT_FILEIDX_STAGE_NONE0);
5375 got_fileindex_entry_staged_filetype_set(ie, 0);
5376
5377 err = got_fileindex_entry_update(ie,
5378 worktree->root_fd, relpath,
5379 ct->staged_blob_id->sha1,
5380 new_base_commit_id->sha1,
5381 !have_staged_files);
5382 } else
5383 err = got_fileindex_entry_update(ie,
5384 worktree->root_fd, relpath,
5385 ct->blob_id->sha1,
5386 new_base_commit_id->sha1,
5387 !have_staged_files);
5388 } else {
5389 err = got_fileindex_entry_alloc(&ie, pe->path);
5390 if (err)
5391 goto done;
5392 err = got_fileindex_entry_update(ie,
5393 worktree->root_fd, relpath, ct->blob_id->sha1,
5394 new_base_commit_id->sha1, 1);
5395 if (err) {
5396 got_fileindex_entry_free(ie);
5397 goto done;
5398 }
5399 err = got_fileindex_entry_add(fileindex, ie);
5400 if (err) {
5401 got_fileindex_entry_free(ie);
5402 goto done;
5403 }
5404 }
5405 free(relpath);
5406 relpath = NULL((void*)0);
5407 }
5408done:
5409 free(relpath);
5410 return err;
5411}
5412
5413
5414static const struct got_error *
5415check_out_of_date(const char *in_repo_path, unsigned char status,
5416 unsigned char staged_status, struct got_object_id *base_blob_id,
5417 struct got_object_id *base_commit_id,
5418 struct got_object_id *head_commit_id, struct got_repository *repo,
5419 int ood_errcode)
5420{
5421 const struct got_error *err = NULL((void*)0);
5422 struct got_object_id *id = NULL((void*)0);
5423
5424 if (status != GOT_STATUS_ADD'A' && staged_status != GOT_STATUS_ADD'A') {
5425 /* Trivial case: base commit == head commit */
5426 if (got_object_id_cmp(base_commit_id, head_commit_id) == 0)
5427 return NULL((void*)0);
5428 /*
5429 * Ensure file content which local changes were based
5430 * on matches file content in the branch head.
5431 */
5432 err = got_object_id_by_path(&id, repo, head_commit_id,
5433 in_repo_path);
5434 if (err) {
5435 if (err->code == GOT_ERR_NO_TREE_ENTRY50)
5436 err = got_error(ood_errcode);
5437 goto done;
5438 } else if (got_object_id_cmp(id, base_blob_id) != 0)
5439 err = got_error(ood_errcode);
5440 } else {
5441 /* Require that added files don't exist in the branch head. */
5442 err = got_object_id_by_path(&id, repo, head_commit_id,
5443 in_repo_path);
5444 if (err && err->code != GOT_ERR_NO_TREE_ENTRY50)
5445 goto done;
5446 err = id ? got_error(ood_errcode) : NULL((void*)0);
5447 }
5448done:
5449 free(id);
5450 return err;
5451}
5452
5453const struct got_error *
5454commit_worktree(struct got_object_id **new_commit_id,
5455 struct got_pathlist_head *commitable_paths,
5456 struct got_object_id *head_commit_id, struct got_worktree *worktree,
5457 const char *author, const char *committer,
5458 got_worktree_commit_msg_cb commit_msg_cb, void *commit_arg,
5459 got_worktree_status_cb status_cb, void *status_arg,
5460 struct got_repository *repo)
5461{
5462 const struct got_error *err = NULL((void*)0), *unlockerr = NULL((void*)0);
5463 struct got_pathlist_entry *pe;
5464 const char *head_ref_name = NULL((void*)0);
5465 struct got_commit_object *head_commit = NULL((void*)0);
5466 struct got_reference *head_ref2 = NULL((void*)0);
5467 struct got_object_id *head_commit_id2 = NULL((void*)0);
5468 struct got_tree_object *head_tree = NULL((void*)0);
5469 struct got_object_id *new_tree_id = NULL((void*)0);
5470 int nentries;
5471 struct got_object_id_queue parent_ids;
5472 struct got_object_qid *pid = NULL((void*)0);
5473 char *logmsg = NULL((void*)0);
5474
5475 *new_commit_id = NULL((void*)0);
5476
5477 SIMPLEQ_INIT(&parent_ids)do { (&parent_ids)->sqh_first = ((void*)0); (&parent_ids
)->sqh_last = &(&parent_ids)->sqh_first; } while
(0)
;
22
Loop condition is false. Exiting loop
5478
5479 err = got_object_open_as_commit(&head_commit, repo, head_commit_id);
5480 if (err)
23
Assuming 'err' is null
24
Taking false branch
5481 goto done;
5482
5483 err = got_object_open_as_tree(&head_tree, repo, head_commit->tree_id);
5484 if (err)
25
Assuming 'err' is null
26
Taking false branch
5485 goto done;
5486
5487 if (commit_msg_cb
26.1
'commit_msg_cb' is not equal to NULL
!= NULL((void*)0)) {
27
Taking true branch
5488 err = commit_msg_cb(commitable_paths, &logmsg, commit_arg);
28
Calling 'collect_rebase_commit_msg'
30
Returning from 'collect_rebase_commit_msg'
5489 if (err
30.1
'err' is null
)
31
Taking false branch
5490 goto done;
5491 }
5492
5493 if (logmsg == NULL((void*)0) || strlen(logmsg) == 0) {
32
Assuming 'logmsg' is not equal to NULL
33
Assuming the condition is false
34
Taking false branch
5494 err = got_error(GOT_ERR_COMMIT_MSG_EMPTY74);
5495 goto done;
5496 }
5497
5498 /* Create blobs from added and modified files and record their IDs. */
5499 TAILQ_FOREACH(pe, commitable_paths, entry)for((pe) = ((commitable_paths)->tqh_first); (pe) != ((void
*)0); (pe) = ((pe)->entry.tqe_next))
{
35
Loop condition is true. Entering loop body
38
Assuming 'pe' is equal to null
39
Loop condition is false. Execution continues on line 5525
5500 struct got_commitable *ct = pe->data;
5501 char *ondisk_path;
5502
5503 /* Blobs for staged files already exist. */
5504 if (ct->staged_status == GOT_STATUS_ADD'A' ||
36
Assuming the condition is true
5505 ct->staged_status == GOT_STATUS_MODIFY'M')
5506 continue;
37
Execution continues on line 5499
5507
5508 if (ct->status != GOT_STATUS_ADD'A' &&
5509 ct->status != GOT_STATUS_MODIFY'M' &&
5510 ct->status != GOT_STATUS_MODE_CHANGE'm')
5511 continue;
5512
5513 if (asprintf(&ondisk_path, "%s/%s",
5514 worktree->root_path, pe->path) == -1) {
5515 err = got_error_from_errno("asprintf");
5516 goto done;
5517 }
5518 err = got_object_blob_create(&ct->blob_id, ondisk_path, repo);
5519 free(ondisk_path);
5520 if (err)
5521 goto done;
5522 }
5523
5524 /* Recursively write new tree objects. */
5525 err = write_tree(&new_tree_id, &nentries, head_tree, "/",
40
Calling 'write_tree'
5526 commitable_paths, status_cb, status_arg, repo);
5527 if (err)
5528 goto done;
5529
5530 err = got_object_qid_alloc(&pid, worktree->base_commit_id);
5531 if (err)
5532 goto done;
5533 SIMPLEQ_INSERT_TAIL(&parent_ids, pid, entry)do { (pid)->entry.sqe_next = ((void*)0); *(&parent_ids
)->sqh_last = (pid); (&parent_ids)->sqh_last = &
(pid)->entry.sqe_next; } while (0)
;
5534 err = got_object_commit_create(new_commit_id, new_tree_id, &parent_ids,
5535 1, author, time(NULL((void*)0)), committer, time(NULL((void*)0)), logmsg, repo);
5536 got_object_qid_free(pid);
5537 if (logmsg != NULL((void*)0))
5538 free(logmsg);
5539 if (err)
5540 goto done;
5541
5542 /* Check if a concurrent commit to our branch has occurred. */
5543 head_ref_name = got_worktree_get_head_ref_name(worktree);
5544 if (head_ref_name == NULL((void*)0)) {
5545 err = got_error_from_errno("got_worktree_get_head_ref_name");
5546 goto done;
5547 }
5548 /* Lock the reference here to prevent concurrent modification. */
5549 err = got_ref_open(&head_ref2, repo, head_ref_name, 1);
5550 if (err)
5551 goto done;
5552 err = got_ref_resolve(&head_commit_id2, repo, head_ref2);
5553 if (err)
5554 goto done;
5555 if (got_object_id_cmp(head_commit_id, head_commit_id2) != 0) {
5556 err = got_error(GOT_ERR_COMMIT_HEAD_CHANGED72);
5557 goto done;
5558 }
5559 /* Update branch head in repository. */
5560 err = got_ref_change_ref(head_ref2, *new_commit_id);
5561 if (err)
5562 goto done;
5563 err = got_ref_write(head_ref2, repo);
5564 if (err)
5565 goto done;
5566
5567 err = got_worktree_set_base_commit_id(worktree, repo, *new_commit_id);
5568 if (err)
5569 goto done;
5570
5571 err = ref_base_commit(worktree, repo);
5572 if (err)
5573 goto done;
5574done:
5575 if (head_tree)
5576 got_object_tree_close(head_tree);
5577 if (head_commit)
5578 got_object_commit_close(head_commit);
5579 free(head_commit_id2);
5580 if (head_ref2) {
5581 unlockerr = got_ref_unlock(head_ref2);
5582 if (unlockerr && err == NULL((void*)0))
5583 err = unlockerr;
5584 got_ref_close(head_ref2);
5585 }
5586 return err;
5587}
5588
5589static const struct got_error *
5590check_path_is_commitable(const char *path,
5591 struct got_pathlist_head *commitable_paths)
5592{
5593 struct got_pathlist_entry *cpe = NULL((void*)0);
5594 size_t path_len = strlen(path);
5595
5596 TAILQ_FOREACH(cpe, commitable_paths, entry)for((cpe) = ((commitable_paths)->tqh_first); (cpe) != ((void
*)0); (cpe) = ((cpe)->entry.tqe_next))
{
5597 struct got_commitable *ct = cpe->data;
5598 const char *ct_path = ct->path;
5599
5600 while (ct_path[0] == '/')
5601 ct_path++;
5602
5603 if (strcmp(path, ct_path) == 0 ||
5604 got_path_is_child(ct_path, path, path_len))
5605 break;
5606 }
5607
5608 if (cpe == NULL((void*)0))
5609 return got_error_path(path, GOT_ERR_BAD_PATH4);
5610
5611 return NULL((void*)0);
5612}
5613
5614static const struct got_error *
5615check_staged_file(void *arg, struct got_fileindex_entry *ie)
5616{
5617 int *have_staged_files = arg;
5618
5619 if (got_fileindex_entry_stage_get(ie) != GOT_FILEIDX_STAGE_NONE0) {
5620 *have_staged_files = 1;
5621 return got_error(GOT_ERR_CANCELLED49);
5622 }
5623
5624 return NULL((void*)0);
5625}
5626
5627static const struct got_error *
5628check_non_staged_files(struct got_fileindex *fileindex,
5629 struct got_pathlist_head *paths)
5630{
5631 struct got_pathlist_entry *pe;
5632 struct got_fileindex_entry *ie;
5633
5634 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
5635 if (pe->path[0] == '\0')
5636 continue;
5637 ie = got_fileindex_entry_get(fileindex, pe->path, pe->path_len);
5638 if (ie == NULL((void*)0))
5639 return got_error_path(pe->path, GOT_ERR_BAD_PATH4);
5640 if (got_fileindex_entry_stage_get(ie) == GOT_FILEIDX_STAGE_NONE0)
5641 return got_error_path(pe->path,
5642 GOT_ERR_FILE_NOT_STAGED105);
5643 }
5644
5645 return NULL((void*)0);
5646}
5647
5648const struct got_error *
5649got_worktree_commit(struct got_object_id **new_commit_id,
5650 struct got_worktree *worktree, struct got_pathlist_head *paths,
5651 const char *author, const char *committer, int allow_bad_symlinks,
5652 got_worktree_commit_msg_cb commit_msg_cb, void *commit_arg,
5653 got_worktree_status_cb status_cb, void *status_arg,
5654 struct got_repository *repo)
5655{
5656 const struct got_error *err = NULL((void*)0), *unlockerr = NULL((void*)0), *sync_err;
5657 struct got_fileindex *fileindex = NULL((void*)0);
5658 char *fileindex_path = NULL((void*)0);
5659 struct got_pathlist_head commitable_paths;
5660 struct collect_commitables_arg cc_arg;
5661 struct got_pathlist_entry *pe;
5662 struct got_reference *head_ref = NULL((void*)0);
5663 struct got_object_id *head_commit_id = NULL((void*)0);
5664 int have_staged_files = 0;
5665
5666 *new_commit_id = NULL((void*)0);
5667
5668 TAILQ_INIT(&commitable_paths)do { (&commitable_paths)->tqh_first = ((void*)0); (&
commitable_paths)->tqh_last = &(&commitable_paths)
->tqh_first; } while (0)
;
5669
5670 err = lock_worktree(worktree, LOCK_EX0x02);
5671 if (err)
5672 goto done;
5673
5674 err = got_ref_open(&head_ref, repo, worktree->head_ref_name, 0);
5675 if (err)
5676 goto done;
5677
5678 err = got_ref_resolve(&head_commit_id, repo, head_ref);
5679 if (err)
5680 goto done;
5681
5682 err = open_fileindex(&fileindex, &fileindex_path, worktree);
5683 if (err)
5684 goto done;
5685
5686 err = got_fileindex_for_each_entry_safe(fileindex, check_staged_file,
5687 &have_staged_files);
5688 if (err && err->code != GOT_ERR_CANCELLED49)
5689 goto done;
5690 if (have_staged_files) {
5691 err = check_non_staged_files(fileindex, paths);
5692 if (err)
5693 goto done;
5694 }
5695
5696 cc_arg.commitable_paths = &commitable_paths;
5697 cc_arg.worktree = worktree;
5698 cc_arg.fileindex = fileindex;
5699 cc_arg.repo = repo;
5700 cc_arg.have_staged_files = have_staged_files;
5701 cc_arg.allow_bad_symlinks = allow_bad_symlinks;
5702 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
5703 err = worktree_status(worktree, pe->path, fileindex, repo,
5704 collect_commitables, &cc_arg, NULL((void*)0), NULL((void*)0), 0, 0);
5705 if (err)
5706 goto done;
5707 }
5708
5709 if (TAILQ_EMPTY(&commitable_paths)(((&commitable_paths)->tqh_first) == ((void*)0))) {
5710 err = got_error(GOT_ERR_COMMIT_NO_CHANGES76);
5711 goto done;
5712 }
5713
5714 TAILQ_FOREACH(pe, paths, entry)for((pe) = ((paths)->tqh_first); (pe) != ((void*)0); (pe) =
((pe)->entry.tqe_next))
{
5715 err = check_path_is_commitable(pe->path, &commitable_paths);
5716 if (err)
5717 goto done;
5718 }
5719
5720 TAILQ_FOREACH(pe, &commitable_paths, entry)for((pe) = ((&commitable_paths)->tqh_first); (pe) != (
(void*)0); (pe) = ((pe)->entry.tqe_next))
{
5721 struct got_commitable *ct = pe->data;
5722 const char *ct_path = ct->in_repo_path;
5723
5724 while (ct_path[0] == '/')
5725 ct_path++;
5726 err = check_out_of_date(ct_path, ct->status,
5727 ct->staged_status, ct->base_blob_id, ct->base_commit_id,
5728 head_commit_id, repo, GOT_ERR_COMMIT_OUT_OF_DATE73);
5729 if (err)
5730 goto done;
5731
5732 }
5733
5734 err = commit_worktree(new_commit_id, &commitable_paths,
5735 head_commit_id, worktree, author, committer,
5736 commit_msg_cb, commit_arg, status_cb, status_arg, repo);
5737 if (err)
5738 goto done;
5739
5740 err = update_fileindex_after_commit(worktree, &commitable_paths,
5741 *new_commit_id, fileindex, have_staged_files);
5742 sync_err = sync_fileindex(fileindex, fileindex_path);
5743 if (sync_err && err == NULL((void*)0))
5744 err = sync_err;
5745done:
5746 if (fileindex)
5747 got_fileindex_free(fileindex);
5748 free(fileindex_path);
5749 unlockerr = lock_worktree(worktree, LOCK_SH0x01);
5750 if (unlockerr && err == NULL((void*)0))
5751 err = unlockerr;
5752 TAILQ_FOREACH(pe, &commitable_paths, entry)for((pe) = ((&commitable_paths)->tqh_first); (pe) != (
(void*)0); (pe) = ((pe)->entry.tqe_next))
{
5753 struct got_commitable *ct = pe->data;
5754 free_commitable(ct);
5755 }
5756 got_pathlist_free(&commitable_paths);
5757 return err;
5758}
5759
5760const char *
5761got_commitable_get_path(struct got_commitable *ct)
5762{
5763 return ct->path;
5764}
5765
5766unsigned int
5767got_commitable_get_status(struct got_commitable *ct)
5768{
5769 return ct->status;
5770}
5771
5772struct check_rebase_ok_arg {
5773 struct got_worktree *worktree;
5774 struct got_repository *repo;
5775};
5776
5777static const struct got_error *
5778check_rebase_ok(void *arg, struct got_fileindex_entry *ie)
5779{
5780 const struct got_error *err = NULL((void*)0);
5781 struct check_rebase_ok_arg *a = arg;
5782 unsigned char status;
5783 struct stat sb;
5784 char *ondisk_path;
5785
5786 /* Reject rebase of a work tree with mixed base commits. */
5787 if (memcmp(ie->commit_sha1, a->worktree->base_commit_id->sha1,
5788 SHA1_DIGEST_LENGTH20))
5789 return got_error(GOT_ERR_MIXED_COMMITS81);
5790
5791 if (asprintf(&ondisk_path, "%s/%s", a->worktree->root_path, ie->path)
5792 == -1)
5793 return got_error_from_errno("asprintf");
5794
5795 /* Reject rebase of a work tree with modified or staged files. */
5796 err = get_file_status(&status, &sb, ie, ondisk_path, -1, NULL((void*)0), a->repo);
5797 free(ondisk_path);
5798 if (err)
5799 return err;
5800
5801 if (status != GOT_STATUS_NO_CHANGE' ')
5802 return got_error(GOT_ERR_MODIFIED84);
5803 if (get_staged_status(ie) != GOT_STATUS_NO_CHANGE' ')
5804 return got_error_path(ie->path, GOT_ERR_FILE_STAGED101);
5805
5806 return NULL((void*)0);
5807}
5808
5809const struct got_error *
5810got_worktree_rebase_prepare(struct got_reference **new_base_branch_ref,
5811 struct got_reference **tmp_branch, struct got_fileindex **fileindex,
5812 struct got_worktree *worktree, struct got_reference *branch,
5813 struct got_repository *repo)
5814{
5815 const struct got_error *err = NULL((void*)0);
5816 char *tmp_branch_name = NULL((void*)0), *new_base_branch_ref_name = NULL((void*)0);
5817 char *branch_ref_name = NULL((void*)0);
5818 char *fileindex_path = NULL((void*)0);
5819 struct check_rebase_ok_arg ok_arg;
5820 struct got_reference *wt_branch = NULL((void*)0), *branch_ref = NULL((void*)0);
5821 struct got_object_id *wt_branch_tip = NULL((void*)0);
5822
5823 *new_base_branch_ref = NULL((void*)0);
5824 *tmp_branch = NULL((void*)0);
5825 *fileindex = NULL((void*)0);
5826
5827 err = lock_worktree(worktree, LOCK_EX0x02);
5828 if (err)
5829 return err;
5830
5831 err = open_fileindex(fileindex, &fileindex_path, worktree);
5832 if (err)
5833 goto done;
5834
5835 ok_arg.worktree = worktree;
5836 ok_arg.repo = repo;
5837 err = got_fileindex_for_each_entry_safe(*fileindex, check_rebase_ok,
5838 &ok_arg);
5839 if (err)
5840 goto done;
5841
5842 err = get_rebase_tmp_ref_name(&tmp_branch_name, worktree);
5843 if (err)
5844 goto done;
5845
5846 err = get_newbase_symref_name(&new_base_branch_ref_name, worktree);
5847 if (err)
5848 goto done;
5849
5850 err = get_rebase_branch_symref_name(&branch_ref_name, worktree);
5851 if (err)
5852 goto done;
5853
5854 err = got_ref_open(&wt_branch, repo, worktree->head_ref_name,
5855 0);
5856 if (err)
5857 goto done;
5858
5859 err = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
5860 if (err)
5861 goto done;
5862 if (got_object_id_cmp(worktree->base_commit_id, wt_branch_tip) != 0) {
5863 err = got_error(GOT_ERR_REBASE_OUT_OF_DATE115);
5864 goto done;
5865 }
5866
5867 err = got_ref_alloc_symref(new_base_branch_ref,
5868 new_base_branch_ref_name, wt_branch);
5869 if (err)
5870 goto done;
5871 err = got_ref_write(*new_base_branch_ref, repo);
5872 if (err)
5873 goto done;
5874
5875 /* TODO Lock original branch's ref while rebasing? */
5876
5877 err = got_ref_alloc_symref(&branch_ref, branch_ref_name, branch);
5878 if (err)
5879 goto done;
5880
5881 err = got_ref_write(branch_ref, repo);
5882 if (err)
5883 goto done;
5884
5885 err = got_ref_alloc(tmp_branch, tmp_branch_name,
5886 worktree->base_commit_id);
5887 if (err)
5888 goto done;
5889 err = got_ref_write(*tmp_branch, repo);
5890 if (err)
5891 goto done;
5892
5893 err = got_worktree_set_head_ref(worktree, *tmp_branch);
5894 if (err)
5895 goto done;
5896done:
5897 free(fileindex_path);
5898 free(tmp_branch_name);
5899 free(new_base_branch_ref_name);
5900 free(branch_ref_name);
5901 if (branch_ref)
5902 got_ref_close(branch_ref);
5903 if (wt_branch)
5904 got_ref_close(wt_branch);
5905 free(wt_branch_tip);
5906 if (err) {
5907 if (*new_base_branch_ref) {
5908 got_ref_close(*new_base_branch_ref);
5909 *new_base_branch_ref = NULL((void*)0);
5910 }
5911 if (*tmp_branch) {
5912 got_ref_close(*tmp_branch);
5913 *tmp_branch = NULL((void*)0);
5914 }
5915 if (*fileindex) {
5916 got_fileindex_free(*fileindex);
5917 *fileindex = NULL((void*)0);
5918 }
5919 lock_worktree(worktree, LOCK_SH0x01);
5920 }
5921 return err;
5922}
5923
5924const struct got_error *
5925got_worktree_rebase_continue(struct got_object_id **commit_id,
5926 struct got_reference **new_base_branch, struct got_reference **tmp_branch,
5927 struct got_reference **branch, struct got_fileindex **fileindex,
5928 struct got_worktree *worktree, struct got_repository *repo)
5929{
5930 const struct got_error *err;
5931 char *commit_ref_name = NULL((void*)0), *new_base_branch_ref_name = NULL((void*)0);
5932 char *tmp_branch_name = NULL((void*)0), *branch_ref_name = NULL((void*)0);
5933 struct got_reference *commit_ref = NULL((void*)0), *branch_ref = NULL((void*)0);
5934 char *fileindex_path = NULL((void*)0);
5935 int have_staged_files = 0;
5936
5937 *commit_id = NULL((void*)0);
5938 *new_base_branch = NULL((void*)0);
5939 *tmp_branch = NULL((void*)0);
5940 *branch = NULL((void*)0);
5941 *fileindex = NULL((void*)0);
5942
5943 err = lock_worktree(worktree, LOCK_EX0x02);
5944 if (err)
5945 return err;
5946
5947 err = open_fileindex(fileindex, &fileindex_path, worktree);
5948 if (err)
5949 goto done;
5950
5951 err = got_fileindex_for_each_entry_safe(*fileindex, check_staged_file,
5952 &have_staged_files);
5953 if (err && err->code != GOT_ERR_CANCELLED49)
5954 goto done;
5955 if (have_staged_files) {
5956 err = got_error(GOT_ERR_STAGED_PATHS106);
5957 goto done;
5958 }
5959
5960 err = get_rebase_tmp_ref_name(&tmp_branch_name, worktree);
5961 if (err)
5962 goto done;
5963
5964 err = get_rebase_branch_symref_name(&branch_ref_name, worktree);
5965 if (err)
5966 goto done;
5967
5968 err = get_rebase_commit_ref_name(&commit_ref_name, worktree);
5969 if (err)
5970 goto done;
5971
5972 err = get_newbase_symref_name(&new_base_branch_ref_name, worktree);
5973 if (err)