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1 | #include "cache.h" | |
2 | #include "dir.h" | |
3 | ||
4 | static int inside_git_dir = -1; | |
5 | static int inside_work_tree = -1; | |
6 | ||
7 | const char *prefix_path(const char *prefix, int len, const char *path) | |
8 | { | |
9 | const char *orig = path; | |
10 | char *sanitized = xmalloc(len + strlen(path) + 1); | |
11 | if (is_absolute_path(orig)) | |
12 | strcpy(sanitized, path); | |
13 | else { | |
14 | if (len) | |
15 | memcpy(sanitized, prefix, len); | |
16 | strcpy(sanitized + len, path); | |
17 | } | |
18 | if (normalize_path_copy(sanitized, sanitized)) | |
19 | goto error_out; | |
20 | if (is_absolute_path(orig)) { | |
21 | size_t root_len, len, total; | |
22 | const char *work_tree = get_git_work_tree(); | |
23 | if (!work_tree) | |
24 | goto error_out; | |
25 | len = strlen(work_tree); | |
26 | root_len = offset_1st_component(work_tree); | |
27 | total = strlen(sanitized) + 1; | |
28 | if (strncmp(sanitized, work_tree, len) || | |
29 | (len > root_len && sanitized[len] != '\0' && sanitized[len] != '/')) { | |
30 | error_out: | |
31 | die("'%s' is outside repository", orig); | |
32 | } | |
33 | if (sanitized[len] == '/') | |
34 | len++; | |
35 | memmove(sanitized, sanitized + len, total - len); | |
36 | } | |
37 | return sanitized; | |
38 | } | |
39 | ||
40 | /* | |
41 | * Unlike prefix_path, this should be used if the named file does | |
42 | * not have to interact with index entry; i.e. name of a random file | |
43 | * on the filesystem. | |
44 | */ | |
45 | const char *prefix_filename(const char *pfx, int pfx_len, const char *arg) | |
46 | { | |
47 | static char path[PATH_MAX]; | |
48 | #ifndef WIN32 | |
49 | if (!pfx_len || is_absolute_path(arg)) | |
50 | return arg; | |
51 | memcpy(path, pfx, pfx_len); | |
52 | strcpy(path + pfx_len, arg); | |
53 | #else | |
54 | char *p; | |
55 | /* don't add prefix to absolute paths, but still replace '\' by '/' */ | |
56 | if (is_absolute_path(arg)) | |
57 | pfx_len = 0; | |
58 | else if (pfx_len) | |
59 | memcpy(path, pfx, pfx_len); | |
60 | strcpy(path + pfx_len, arg); | |
61 | for (p = path + pfx_len; *p; p++) | |
62 | if (*p == '\\') | |
63 | *p = '/'; | |
64 | #endif | |
65 | return path; | |
66 | } | |
67 | ||
68 | int check_filename(const char *prefix, const char *arg) | |
69 | { | |
70 | const char *name; | |
71 | struct stat st; | |
72 | ||
73 | name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg; | |
74 | if (!lstat(name, &st)) | |
75 | return 1; /* file exists */ | |
76 | if (errno == ENOENT || errno == ENOTDIR) | |
77 | return 0; /* file does not exist */ | |
78 | die_errno("failed to stat '%s'", arg); | |
79 | } | |
80 | ||
81 | static void NORETURN die_verify_filename(const char *prefix, const char *arg) | |
82 | { | |
83 | unsigned char sha1[20]; | |
84 | unsigned mode; | |
85 | /* try a detailed diagnostic ... */ | |
86 | get_sha1_with_mode_1(arg, sha1, &mode, 0, prefix); | |
87 | /* ... or fall back the most general message. */ | |
88 | die("ambiguous argument '%s': unknown revision or path not in the working tree.\n" | |
89 | "Use '--' to separate paths from revisions", arg); | |
90 | ||
91 | } | |
92 | ||
93 | /* | |
94 | * Verify a filename that we got as an argument for a pathspec | |
95 | * entry. Note that a filename that begins with "-" never verifies | |
96 | * as true, because even if such a filename were to exist, we want | |
97 | * it to be preceded by the "--" marker (or we want the user to | |
98 | * use a format like "./-filename") | |
99 | */ | |
100 | void verify_filename(const char *prefix, const char *arg) | |
101 | { | |
102 | if (*arg == '-') | |
103 | die("bad flag '%s' used after filename", arg); | |
104 | if (check_filename(prefix, arg)) | |
105 | return; | |
106 | die_verify_filename(prefix, arg); | |
107 | } | |
108 | ||
109 | /* | |
110 | * Opposite of the above: the command line did not have -- marker | |
111 | * and we parsed the arg as a refname. It should not be interpretable | |
112 | * as a filename. | |
113 | */ | |
114 | void verify_non_filename(const char *prefix, const char *arg) | |
115 | { | |
116 | if (!is_inside_work_tree() || is_inside_git_dir()) | |
117 | return; | |
118 | if (*arg == '-') | |
119 | return; /* flag */ | |
120 | if (!check_filename(prefix, arg)) | |
121 | return; | |
122 | die("ambiguous argument '%s': both revision and filename\n" | |
123 | "Use '--' to separate filenames from revisions", arg); | |
124 | } | |
125 | ||
126 | const char **get_pathspec(const char *prefix, const char **pathspec) | |
127 | { | |
128 | const char *entry = *pathspec; | |
129 | const char **src, **dst; | |
130 | int prefixlen; | |
131 | ||
132 | if (!prefix && !entry) | |
133 | return NULL; | |
134 | ||
135 | if (!entry) { | |
136 | static const char *spec[2]; | |
137 | spec[0] = prefix; | |
138 | spec[1] = NULL; | |
139 | return spec; | |
140 | } | |
141 | ||
142 | /* Otherwise we have to re-write the entries.. */ | |
143 | src = pathspec; | |
144 | dst = pathspec; | |
145 | prefixlen = prefix ? strlen(prefix) : 0; | |
146 | while (*src) { | |
147 | const char *p = prefix_path(prefix, prefixlen, *src); | |
148 | *(dst++) = p; | |
149 | src++; | |
150 | } | |
151 | *dst = NULL; | |
152 | if (!*pathspec) | |
153 | return NULL; | |
154 | return pathspec; | |
155 | } | |
156 | ||
157 | /* | |
158 | * Test if it looks like we're at a git directory. | |
159 | * We want to see: | |
160 | * | |
161 | * - either an objects/ directory _or_ the proper | |
162 | * GIT_OBJECT_DIRECTORY environment variable | |
163 | * - a refs/ directory | |
164 | * - either a HEAD symlink or a HEAD file that is formatted as | |
165 | * a proper "ref:", or a regular file HEAD that has a properly | |
166 | * formatted sha1 object name. | |
167 | */ | |
168 | static int is_git_directory(const char *suspect) | |
169 | { | |
170 | char path[PATH_MAX]; | |
171 | size_t len = strlen(suspect); | |
172 | ||
173 | if (PATH_MAX <= len + strlen("/objects")) | |
174 | die("Too long path: %.*s", 60, suspect); | |
175 | strcpy(path, suspect); | |
176 | if (getenv(DB_ENVIRONMENT)) { | |
177 | if (access(getenv(DB_ENVIRONMENT), X_OK)) | |
178 | return 0; | |
179 | } | |
180 | else { | |
181 | strcpy(path + len, "/objects"); | |
182 | if (access(path, X_OK)) | |
183 | return 0; | |
184 | } | |
185 | ||
186 | strcpy(path + len, "/refs"); | |
187 | if (access(path, X_OK)) | |
188 | return 0; | |
189 | ||
190 | strcpy(path + len, "/HEAD"); | |
191 | if (validate_headref(path)) | |
192 | return 0; | |
193 | ||
194 | return 1; | |
195 | } | |
196 | ||
197 | int is_inside_git_dir(void) | |
198 | { | |
199 | if (inside_git_dir < 0) | |
200 | inside_git_dir = is_inside_dir(get_git_dir()); | |
201 | return inside_git_dir; | |
202 | } | |
203 | ||
204 | int is_inside_work_tree(void) | |
205 | { | |
206 | if (inside_work_tree < 0) | |
207 | inside_work_tree = is_inside_dir(get_git_work_tree()); | |
208 | return inside_work_tree; | |
209 | } | |
210 | ||
211 | /* | |
212 | * set_work_tree() is only ever called if you set GIT_DIR explicitly. | |
213 | * The old behaviour (which we retain here) is to set the work tree root | |
214 | * to the cwd, unless overridden by the config, the command line, or | |
215 | * GIT_WORK_TREE. | |
216 | */ | |
217 | static const char *set_work_tree(const char *dir) | |
218 | { | |
219 | char buffer[PATH_MAX + 1]; | |
220 | ||
221 | if (!getcwd(buffer, sizeof(buffer))) | |
222 | die ("Could not get the current working directory"); | |
223 | git_work_tree_cfg = xstrdup(buffer); | |
224 | inside_work_tree = 1; | |
225 | ||
226 | return NULL; | |
227 | } | |
228 | ||
229 | void setup_work_tree(void) | |
230 | { | |
231 | const char *work_tree, *git_dir; | |
232 | static int initialized = 0; | |
233 | ||
234 | if (initialized) | |
235 | return; | |
236 | work_tree = get_git_work_tree(); | |
237 | git_dir = get_git_dir(); | |
238 | if (!is_absolute_path(git_dir)) | |
239 | git_dir = make_absolute_path(git_dir); | |
240 | if (!work_tree || chdir(work_tree)) | |
241 | die("This operation must be run in a work tree"); | |
242 | set_git_dir(make_relative_path(git_dir, work_tree)); | |
243 | initialized = 1; | |
244 | } | |
245 | ||
246 | static int check_repository_format_gently(int *nongit_ok) | |
247 | { | |
248 | git_config(check_repository_format_version, NULL); | |
249 | if (GIT_REPO_VERSION < repository_format_version) { | |
250 | if (!nongit_ok) | |
251 | die ("Expected git repo version <= %d, found %d", | |
252 | GIT_REPO_VERSION, repository_format_version); | |
253 | warning("Expected git repo version <= %d, found %d", | |
254 | GIT_REPO_VERSION, repository_format_version); | |
255 | warning("Please upgrade Git"); | |
256 | *nongit_ok = -1; | |
257 | return -1; | |
258 | } | |
259 | return 0; | |
260 | } | |
261 | ||
262 | /* | |
263 | * Try to read the location of the git directory from the .git file, | |
264 | * return path to git directory if found. | |
265 | */ | |
266 | const char *read_gitfile_gently(const char *path) | |
267 | { | |
268 | char *buf; | |
269 | char *dir; | |
270 | const char *slash; | |
271 | struct stat st; | |
272 | int fd; | |
273 | size_t len; | |
274 | ||
275 | if (stat(path, &st)) | |
276 | return NULL; | |
277 | if (!S_ISREG(st.st_mode)) | |
278 | return NULL; | |
279 | fd = open(path, O_RDONLY); | |
280 | if (fd < 0) | |
281 | die_errno("Error opening '%s'", path); | |
282 | buf = xmalloc(st.st_size + 1); | |
283 | len = read_in_full(fd, buf, st.st_size); | |
284 | close(fd); | |
285 | if (len != st.st_size) | |
286 | die("Error reading %s", path); | |
287 | buf[len] = '\0'; | |
288 | if (prefixcmp(buf, "gitdir: ")) | |
289 | die("Invalid gitfile format: %s", path); | |
290 | while (buf[len - 1] == '\n' || buf[len - 1] == '\r') | |
291 | len--; | |
292 | if (len < 9) | |
293 | die("No path in gitfile: %s", path); | |
294 | buf[len] = '\0'; | |
295 | dir = buf + 8; | |
296 | ||
297 | if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) { | |
298 | size_t pathlen = slash+1 - path; | |
299 | size_t dirlen = pathlen + len - 8; | |
300 | dir = xmalloc(dirlen + 1); | |
301 | strncpy(dir, path, pathlen); | |
302 | strncpy(dir + pathlen, buf + 8, len - 8); | |
303 | dir[dirlen] = '\0'; | |
304 | free(buf); | |
305 | buf = dir; | |
306 | } | |
307 | ||
308 | if (!is_git_directory(dir)) | |
309 | die("Not a git repository: %s", dir); | |
310 | path = make_absolute_path(dir); | |
311 | ||
312 | free(buf); | |
313 | return path; | |
314 | } | |
315 | ||
316 | static const char *setup_explicit_git_dir(const char *gitdirenv, | |
317 | const char *work_tree_env, int *nongit_ok) | |
318 | { | |
319 | static char buffer[1024 + 1]; | |
320 | const char *retval; | |
321 | ||
322 | if (PATH_MAX - 40 < strlen(gitdirenv)) | |
323 | die("'$%s' too big", GIT_DIR_ENVIRONMENT); | |
324 | if (!is_git_directory(gitdirenv)) { | |
325 | if (nongit_ok) { | |
326 | *nongit_ok = 1; | |
327 | return NULL; | |
328 | } | |
329 | die("Not a git repository: '%s'", gitdirenv); | |
330 | } | |
331 | if (!work_tree_env) { | |
332 | retval = set_work_tree(gitdirenv); | |
333 | /* config may override worktree */ | |
334 | if (check_repository_format_gently(nongit_ok)) | |
335 | return NULL; | |
336 | return retval; | |
337 | } | |
338 | if (check_repository_format_gently(nongit_ok)) | |
339 | return NULL; | |
340 | retval = get_relative_cwd(buffer, sizeof(buffer) - 1, | |
341 | get_git_work_tree()); | |
342 | if (!retval || !*retval) | |
343 | return NULL; | |
344 | set_git_dir(make_absolute_path(gitdirenv)); | |
345 | if (chdir(work_tree_env) < 0) | |
346 | die_errno ("Could not chdir to '%s'", work_tree_env); | |
347 | strcat(buffer, "/"); | |
348 | return retval; | |
349 | } | |
350 | ||
351 | static int cwd_contains_git_dir(const char **gitfile_dirp) | |
352 | { | |
353 | const char *gitfile_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT); | |
354 | *gitfile_dirp = gitfile_dir; | |
355 | if (gitfile_dir) { | |
356 | if (set_git_dir(gitfile_dir)) | |
357 | die("Repository setup failed"); | |
358 | return 1; | |
359 | } | |
360 | return is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT); | |
361 | } | |
362 | ||
363 | static const char *setup_discovered_git_dir(const char *work_tree_env, | |
364 | int offset, int len, char *cwd, int *nongit_ok) | |
365 | { | |
366 | int root_len; | |
367 | ||
368 | inside_git_dir = 0; | |
369 | if (!work_tree_env) | |
370 | inside_work_tree = 1; | |
371 | root_len = offset_1st_component(cwd); | |
372 | git_work_tree_cfg = xstrndup(cwd, offset > root_len ? offset : root_len); | |
373 | if (check_repository_format_gently(nongit_ok)) | |
374 | return NULL; | |
375 | if (offset == len) | |
376 | return NULL; | |
377 | ||
378 | /* Make "offset" point to past the '/', and add a '/' at the end */ | |
379 | offset++; | |
380 | cwd[len++] = '/'; | |
381 | cwd[len] = 0; | |
382 | return cwd + offset; | |
383 | } | |
384 | ||
385 | static const char *setup_bare_git_dir(const char *work_tree_env, | |
386 | int offset, int len, char *cwd, int *nongit_ok) | |
387 | { | |
388 | int root_len; | |
389 | ||
390 | inside_git_dir = 1; | |
391 | if (!work_tree_env) | |
392 | inside_work_tree = 0; | |
393 | if (offset != len) { | |
394 | if (chdir(cwd)) | |
395 | die_errno("Cannot come back to cwd"); | |
396 | root_len = offset_1st_component(cwd); | |
397 | cwd[offset > root_len ? offset : root_len] = '\0'; | |
398 | set_git_dir(cwd); | |
399 | } else | |
400 | set_git_dir("."); | |
401 | check_repository_format_gently(nongit_ok); | |
402 | return NULL; | |
403 | } | |
404 | ||
405 | static const char *setup_nongit(const char *cwd, int *nongit_ok) | |
406 | { | |
407 | if (!nongit_ok) | |
408 | die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT); | |
409 | if (chdir(cwd)) | |
410 | die_errno("Cannot come back to cwd"); | |
411 | *nongit_ok = 1; | |
412 | return NULL; | |
413 | } | |
414 | ||
415 | static dev_t get_device_or_die(const char *path, const char *prefix) | |
416 | { | |
417 | struct stat buf; | |
418 | if (stat(path, &buf)) | |
419 | die_errno("failed to stat '%s%s%s'", | |
420 | prefix ? prefix : "", | |
421 | prefix ? "/" : "", path); | |
422 | return buf.st_dev; | |
423 | } | |
424 | ||
425 | /* | |
426 | * We cannot decide in this function whether we are in the work tree or | |
427 | * not, since the config can only be read _after_ this function was called. | |
428 | */ | |
429 | static const char *setup_git_directory_gently_1(int *nongit_ok) | |
430 | { | |
431 | const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT); | |
432 | const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT); | |
433 | static char cwd[PATH_MAX+1]; | |
434 | const char *gitdirenv; | |
435 | const char *gitfile_dir; | |
436 | int len, offset, ceil_offset; | |
437 | dev_t current_device = 0; | |
438 | int one_filesystem = 1; | |
439 | ||
440 | /* | |
441 | * Let's assume that we are in a git repository. | |
442 | * If it turns out later that we are somewhere else, the value will be | |
443 | * updated accordingly. | |
444 | */ | |
445 | if (nongit_ok) | |
446 | *nongit_ok = 0; | |
447 | ||
448 | /* | |
449 | * If GIT_DIR is set explicitly, we're not going | |
450 | * to do any discovery, but we still do repository | |
451 | * validation. | |
452 | */ | |
453 | gitdirenv = getenv(GIT_DIR_ENVIRONMENT); | |
454 | if (gitdirenv) | |
455 | return setup_explicit_git_dir(gitdirenv, work_tree_env, nongit_ok); | |
456 | ||
457 | if (!getcwd(cwd, sizeof(cwd)-1)) | |
458 | die_errno("Unable to read current working directory"); | |
459 | ||
460 | ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs); | |
461 | if (ceil_offset < 0 && has_dos_drive_prefix(cwd)) | |
462 | ceil_offset = 1; | |
463 | ||
464 | /* | |
465 | * Test in the following order (relative to the cwd): | |
466 | * - .git (file containing "gitdir: <path>") | |
467 | * - .git/ | |
468 | * - ./ (bare) | |
469 | * - ../.git | |
470 | * - ../.git/ | |
471 | * - ../ (bare) | |
472 | * - ../../.git/ | |
473 | * etc. | |
474 | */ | |
475 | offset = len = strlen(cwd); | |
476 | one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0); | |
477 | if (one_filesystem) | |
478 | current_device = get_device_or_die(".", NULL); | |
479 | for (;;) { | |
480 | if (cwd_contains_git_dir(&gitfile_dir)) | |
481 | return setup_discovered_git_dir(work_tree_env, offset, | |
482 | len, cwd, nongit_ok); | |
483 | if (is_git_directory(".")) | |
484 | return setup_bare_git_dir(work_tree_env, offset, | |
485 | len, cwd, nongit_ok); | |
486 | while (--offset > ceil_offset && cwd[offset] != '/'); | |
487 | if (offset <= ceil_offset) | |
488 | return setup_nongit(cwd, nongit_ok); | |
489 | if (one_filesystem) { | |
490 | dev_t parent_device = get_device_or_die("..", cwd); | |
491 | if (parent_device != current_device) { | |
492 | if (nongit_ok) { | |
493 | if (chdir(cwd)) | |
494 | die_errno("Cannot come back to cwd"); | |
495 | *nongit_ok = 1; | |
496 | return NULL; | |
497 | } | |
498 | cwd[offset] = '\0'; | |
499 | die("Not a git repository (or any parent up to mount parent %s)\n" | |
500 | "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd); | |
501 | } | |
502 | } | |
503 | if (chdir("..")) { | |
504 | cwd[offset] = '\0'; | |
505 | die_errno("Cannot change to '%s/..'", cwd); | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
510 | const char *setup_git_directory_gently(int *nongit_ok) | |
511 | { | |
512 | const char *prefix; | |
513 | ||
514 | prefix = setup_git_directory_gently_1(nongit_ok); | |
515 | if (startup_info) | |
516 | startup_info->have_repository = !nongit_ok || !*nongit_ok; | |
517 | return prefix; | |
518 | } | |
519 | ||
520 | int git_config_perm(const char *var, const char *value) | |
521 | { | |
522 | int i; | |
523 | char *endptr; | |
524 | ||
525 | if (value == NULL) | |
526 | return PERM_GROUP; | |
527 | ||
528 | if (!strcmp(value, "umask")) | |
529 | return PERM_UMASK; | |
530 | if (!strcmp(value, "group")) | |
531 | return PERM_GROUP; | |
532 | if (!strcmp(value, "all") || | |
533 | !strcmp(value, "world") || | |
534 | !strcmp(value, "everybody")) | |
535 | return PERM_EVERYBODY; | |
536 | ||
537 | /* Parse octal numbers */ | |
538 | i = strtol(value, &endptr, 8); | |
539 | ||
540 | /* If not an octal number, maybe true/false? */ | |
541 | if (*endptr != 0) | |
542 | return git_config_bool(var, value) ? PERM_GROUP : PERM_UMASK; | |
543 | ||
544 | /* | |
545 | * Treat values 0, 1 and 2 as compatibility cases, otherwise it is | |
546 | * a chmod value to restrict to. | |
547 | */ | |
548 | switch (i) { | |
549 | case PERM_UMASK: /* 0 */ | |
550 | return PERM_UMASK; | |
551 | case OLD_PERM_GROUP: /* 1 */ | |
552 | return PERM_GROUP; | |
553 | case OLD_PERM_EVERYBODY: /* 2 */ | |
554 | return PERM_EVERYBODY; | |
555 | } | |
556 | ||
557 | /* A filemode value was given: 0xxx */ | |
558 | ||
559 | if ((i & 0600) != 0600) | |
560 | die("Problem with core.sharedRepository filemode value " | |
561 | "(0%.3o).\nThe owner of files must always have " | |
562 | "read and write permissions.", i); | |
563 | ||
564 | /* | |
565 | * Mask filemode value. Others can not get write permission. | |
566 | * x flags for directories are handled separately. | |
567 | */ | |
568 | return -(i & 0666); | |
569 | } | |
570 | ||
571 | int check_repository_format_version(const char *var, const char *value, void *cb) | |
572 | { | |
573 | if (strcmp(var, "core.repositoryformatversion") == 0) | |
574 | repository_format_version = git_config_int(var, value); | |
575 | else if (strcmp(var, "core.sharedrepository") == 0) | |
576 | shared_repository = git_config_perm(var, value); | |
577 | else if (strcmp(var, "core.bare") == 0) { | |
578 | is_bare_repository_cfg = git_config_bool(var, value); | |
579 | if (is_bare_repository_cfg == 1) | |
580 | inside_work_tree = -1; | |
581 | } else if (strcmp(var, "core.worktree") == 0) { | |
582 | if (!value) | |
583 | return config_error_nonbool(var); | |
584 | free(git_work_tree_cfg); | |
585 | git_work_tree_cfg = xstrdup(value); | |
586 | inside_work_tree = -1; | |
587 | } | |
588 | return 0; | |
589 | } | |
590 | ||
591 | int check_repository_format(void) | |
592 | { | |
593 | return check_repository_format_gently(NULL); | |
594 | } | |
595 | ||
596 | /* | |
597 | * Returns the "prefix", a path to the current working directory | |
598 | * relative to the work tree root, or NULL, if the current working | |
599 | * directory is not a strict subdirectory of the work tree root. The | |
600 | * prefix always ends with a '/' character. | |
601 | */ | |
602 | const char *setup_git_directory(void) | |
603 | { | |
604 | const char *retval = setup_git_directory_gently(NULL); | |
605 | ||
606 | /* If the work tree is not the default one, recompute prefix */ | |
607 | if (inside_work_tree < 0) { | |
608 | static char buffer[PATH_MAX + 1]; | |
609 | char *rel; | |
610 | if (retval && chdir(retval)) | |
611 | die_errno ("Could not jump back into original cwd"); | |
612 | rel = get_relative_cwd(buffer, PATH_MAX, get_git_work_tree()); | |
613 | if (rel && *rel && chdir(get_git_work_tree())) | |
614 | die_errno ("Could not jump to working directory"); | |
615 | return rel && *rel ? strcat(rel, "/") : NULL; | |
616 | } | |
617 | ||
618 | return retval; | |
619 | } |