/src/libgit2/src/util/futils.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright (C) the libgit2 contributors. All rights reserved. |
3 | | * |
4 | | * This file is part of libgit2, distributed under the GNU GPL v2 with |
5 | | * a Linking Exception. For full terms see the included COPYING file. |
6 | | */ |
7 | | |
8 | | #include "futils.h" |
9 | | |
10 | | #include "runtime.h" |
11 | | #include "strmap.h" |
12 | | #include "hash.h" |
13 | | #include "rand.h" |
14 | | |
15 | | #include <ctype.h> |
16 | | |
17 | 0 | #define GIT_FILEMODE_DEFAULT 0100666 |
18 | | |
19 | | int git_futils_mkpath2file(const char *file_path, const mode_t mode) |
20 | 0 | { |
21 | 0 | return git_futils_mkdir( |
22 | 0 | file_path, mode, |
23 | 0 | GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST | GIT_MKDIR_VERIFY_DIR); |
24 | 0 | } |
25 | | |
26 | | int git_futils_mktmp(git_str *path_out, const char *filename, mode_t mode) |
27 | 6.01k | { |
28 | 6.01k | const int open_flags = O_RDWR | O_CREAT | O_EXCL | O_BINARY | O_CLOEXEC; |
29 | 6.01k | unsigned int tries = 32; |
30 | 6.01k | int fd; |
31 | | |
32 | 6.01k | while (tries--) { |
33 | 6.01k | uint64_t rand = git_rand_next(); |
34 | | |
35 | 6.01k | git_str_sets(path_out, filename); |
36 | 6.01k | git_str_puts(path_out, "_git2_"); |
37 | 6.01k | git_str_encode_hexstr(path_out, (void *)&rand, sizeof(uint64_t)); |
38 | | |
39 | 6.01k | if (git_str_oom(path_out)) |
40 | 0 | return -1; |
41 | | |
42 | | /* Note that we open with O_CREAT | O_EXCL */ |
43 | 6.01k | if ((fd = p_open(path_out->ptr, open_flags, mode)) >= 0) |
44 | 6.01k | return fd; |
45 | 6.01k | } |
46 | | |
47 | 0 | git_error_set(GIT_ERROR_OS, |
48 | 0 | "failed to create temporary file '%s'", path_out->ptr); |
49 | 0 | git_str_dispose(path_out); |
50 | 0 | return -1; |
51 | 6.01k | } |
52 | | |
53 | | int git_futils_creat_withpath(const char *path, const mode_t dirmode, const mode_t mode) |
54 | 0 | { |
55 | 0 | int fd; |
56 | |
|
57 | 0 | if (git_futils_mkpath2file(path, dirmode) < 0) |
58 | 0 | return -1; |
59 | | |
60 | 0 | fd = p_creat(path, mode); |
61 | 0 | if (fd < 0) { |
62 | 0 | git_error_set(GIT_ERROR_OS, "failed to create file '%s'", path); |
63 | 0 | return -1; |
64 | 0 | } |
65 | | |
66 | 0 | return fd; |
67 | 0 | } |
68 | | |
69 | | int git_futils_creat_locked(const char *path, const mode_t mode) |
70 | 8 | { |
71 | 8 | int fd = p_open(path, O_WRONLY | O_CREAT | O_EXCL | O_BINARY | O_CLOEXEC, |
72 | 8 | mode); |
73 | | |
74 | 8 | if (fd < 0) { |
75 | 0 | int error = errno; |
76 | 0 | git_error_set(GIT_ERROR_OS, "failed to create locked file '%s'", path); |
77 | 0 | switch (error) { |
78 | 0 | case EEXIST: |
79 | 0 | return GIT_ELOCKED; |
80 | 0 | case ENOENT: |
81 | 0 | return GIT_ENOTFOUND; |
82 | 0 | default: |
83 | 0 | return -1; |
84 | 0 | } |
85 | 0 | } |
86 | | |
87 | 8 | return fd; |
88 | 8 | } |
89 | | |
90 | | int git_futils_creat_locked_withpath(const char *path, const mode_t dirmode, const mode_t mode) |
91 | 0 | { |
92 | 0 | if (git_futils_mkpath2file(path, dirmode) < 0) |
93 | 0 | return -1; |
94 | | |
95 | 0 | return git_futils_creat_locked(path, mode); |
96 | 0 | } |
97 | | |
98 | | int git_futils_open_ro(const char *path) |
99 | 3.11k | { |
100 | 3.11k | int fd = p_open(path, O_RDONLY); |
101 | 3.11k | if (fd < 0) |
102 | 3.10k | return git_fs_path_set_error(errno, path, "open"); |
103 | 10 | return fd; |
104 | 3.11k | } |
105 | | |
106 | | int git_futils_truncate(const char *path, int mode) |
107 | 0 | { |
108 | 0 | int fd = p_open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, mode); |
109 | 0 | if (fd < 0) |
110 | 0 | return git_fs_path_set_error(errno, path, "open"); |
111 | | |
112 | 0 | close(fd); |
113 | 0 | return 0; |
114 | 0 | } |
115 | | |
116 | | int git_futils_filesize(uint64_t *out, git_file fd) |
117 | 0 | { |
118 | 0 | struct stat sb; |
119 | |
|
120 | 0 | if (p_fstat(fd, &sb)) { |
121 | 0 | git_error_set(GIT_ERROR_OS, "failed to stat file descriptor"); |
122 | 0 | return -1; |
123 | 0 | } |
124 | | |
125 | 0 | if (sb.st_size < 0) { |
126 | 0 | git_error_set(GIT_ERROR_INVALID, "invalid file size"); |
127 | 0 | return -1; |
128 | 0 | } |
129 | | |
130 | 0 | *out = sb.st_size; |
131 | 0 | return 0; |
132 | 0 | } |
133 | | |
134 | | mode_t git_futils_canonical_mode(mode_t raw_mode) |
135 | 0 | { |
136 | 0 | if (S_ISREG(raw_mode)) |
137 | 0 | return S_IFREG | GIT_PERMS_CANONICAL(raw_mode); |
138 | 0 | else if (S_ISLNK(raw_mode)) |
139 | 0 | return S_IFLNK; |
140 | 0 | else if (S_ISGITLINK(raw_mode)) |
141 | 0 | return S_IFGITLINK; |
142 | 0 | else if (S_ISDIR(raw_mode)) |
143 | 0 | return S_IFDIR; |
144 | 0 | else |
145 | 0 | return 0; |
146 | 0 | } |
147 | | |
148 | | int git_futils_readbuffer_fd(git_str *buf, git_file fd, size_t len) |
149 | 10 | { |
150 | 10 | ssize_t read_size = 0; |
151 | 10 | size_t alloc_len; |
152 | | |
153 | 10 | git_str_clear(buf); |
154 | | |
155 | 10 | if (!git__is_ssizet(len)) { |
156 | 0 | git_error_set(GIT_ERROR_INVALID, "read too large"); |
157 | 0 | return -1; |
158 | 0 | } |
159 | | |
160 | 10 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, len, 1); |
161 | 10 | if (git_str_grow(buf, alloc_len) < 0) |
162 | 0 | return -1; |
163 | | |
164 | | /* p_read loops internally to read len bytes */ |
165 | 10 | read_size = p_read(fd, buf->ptr, len); |
166 | | |
167 | 10 | if (read_size < 0) { |
168 | 0 | git_error_set(GIT_ERROR_OS, "failed to read descriptor"); |
169 | 0 | git_str_dispose(buf); |
170 | 0 | return -1; |
171 | 0 | } |
172 | | |
173 | 10 | if ((size_t)read_size != len) { |
174 | 0 | git_error_set(GIT_ERROR_FILESYSTEM, "could not read (expected %" PRIuZ " bytes, read %" PRIuZ ")", len, (size_t)read_size); |
175 | 0 | git_str_dispose(buf); |
176 | 0 | return -1; |
177 | 0 | } |
178 | | |
179 | 10 | buf->ptr[read_size] = '\0'; |
180 | 10 | buf->size = read_size; |
181 | | |
182 | 10 | return 0; |
183 | 10 | } |
184 | | |
185 | | int git_futils_readbuffer_fd_full(git_str *buf, git_file fd) |
186 | 0 | { |
187 | 0 | static size_t blocksize = 10240; |
188 | 0 | size_t alloc_len = 0, total_size = 0; |
189 | 0 | ssize_t read_size = 0; |
190 | |
|
191 | 0 | git_str_clear(buf); |
192 | |
|
193 | 0 | while (true) { |
194 | 0 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, alloc_len, blocksize); |
195 | |
|
196 | 0 | if (git_str_grow(buf, alloc_len) < 0) |
197 | 0 | return -1; |
198 | | |
199 | | /* p_read loops internally to read blocksize bytes */ |
200 | 0 | read_size = p_read(fd, buf->ptr, blocksize); |
201 | |
|
202 | 0 | if (read_size < 0) { |
203 | 0 | git_error_set(GIT_ERROR_OS, "failed to read descriptor"); |
204 | 0 | git_str_dispose(buf); |
205 | 0 | return -1; |
206 | 0 | } |
207 | | |
208 | 0 | total_size += read_size; |
209 | |
|
210 | 0 | if ((size_t)read_size < blocksize) { |
211 | 0 | break; |
212 | 0 | } |
213 | 0 | } |
214 | | |
215 | 0 | buf->ptr[total_size] = '\0'; |
216 | 0 | buf->size = total_size; |
217 | |
|
218 | 0 | return 0; |
219 | 0 | } |
220 | | |
221 | | int git_futils_readbuffer_updated( |
222 | | git_str *out, |
223 | | const char *path, |
224 | | unsigned char checksum[GIT_HASH_SHA256_SIZE], |
225 | | int *updated) |
226 | 16.4k | { |
227 | 16.4k | int error; |
228 | 16.4k | git_file fd; |
229 | 16.4k | struct stat st; |
230 | 16.4k | git_str buf = GIT_STR_INIT; |
231 | 16.4k | unsigned char checksum_new[GIT_HASH_SHA256_SIZE]; |
232 | | |
233 | 16.4k | GIT_ASSERT_ARG(out); |
234 | 16.4k | GIT_ASSERT_ARG(path && *path); |
235 | | |
236 | 16.4k | if (updated != NULL) |
237 | 3.11k | *updated = 0; |
238 | | |
239 | 16.4k | if (p_stat(path, &st) < 0) |
240 | 16.4k | return git_fs_path_set_error(errno, path, "stat"); |
241 | | |
242 | | |
243 | 10 | if (S_ISDIR(st.st_mode)) { |
244 | 0 | git_error_set(GIT_ERROR_INVALID, "requested file is a directory"); |
245 | 0 | return GIT_ENOTFOUND; |
246 | 0 | } |
247 | | |
248 | 10 | if (!git__is_sizet(st.st_size+1)) { |
249 | 0 | git_error_set(GIT_ERROR_OS, "invalid regular file stat for '%s'", path); |
250 | 0 | return -1; |
251 | 0 | } |
252 | | |
253 | 10 | if ((fd = git_futils_open_ro(path)) < 0) |
254 | 0 | return fd; |
255 | | |
256 | 10 | if (git_futils_readbuffer_fd(&buf, fd, (size_t)st.st_size) < 0) { |
257 | 0 | p_close(fd); |
258 | 0 | return -1; |
259 | 0 | } |
260 | | |
261 | 10 | p_close(fd); |
262 | | |
263 | 10 | if (checksum) { |
264 | 0 | error = git_hash_buf(checksum_new, buf.ptr, |
265 | 0 | buf.size, GIT_HASH_ALGORITHM_SHA256); |
266 | |
|
267 | 0 | if (error < 0) { |
268 | 0 | git_str_dispose(&buf); |
269 | 0 | return error; |
270 | 0 | } |
271 | | |
272 | | /* |
273 | | * If we were given a checksum, we only want to use it if it's different |
274 | | */ |
275 | 0 | if (!memcmp(checksum, checksum_new, GIT_HASH_SHA256_SIZE)) { |
276 | 0 | git_str_dispose(&buf); |
277 | 0 | if (updated) |
278 | 0 | *updated = 0; |
279 | |
|
280 | 0 | return 0; |
281 | 0 | } |
282 | | |
283 | 0 | memcpy(checksum, checksum_new, GIT_HASH_SHA256_SIZE); |
284 | 0 | } |
285 | | |
286 | | /* |
287 | | * If we're here, the file did change, or the user didn't have an old version |
288 | | */ |
289 | 10 | if (updated != NULL) |
290 | 0 | *updated = 1; |
291 | | |
292 | 10 | git_str_swap(out, &buf); |
293 | 10 | git_str_dispose(&buf); |
294 | | |
295 | 10 | return 0; |
296 | 10 | } |
297 | | |
298 | | int git_futils_readbuffer(git_str *buf, const char *path) |
299 | 13.3k | { |
300 | 13.3k | return git_futils_readbuffer_updated(buf, path, NULL, NULL); |
301 | 13.3k | } |
302 | | |
303 | | int git_futils_writebuffer( |
304 | | const git_str *buf, const char *path, int flags, mode_t mode) |
305 | 0 | { |
306 | 0 | int fd, do_fsync = 0, error = 0; |
307 | |
|
308 | 0 | if (!flags) |
309 | 0 | flags = O_CREAT | O_TRUNC | O_WRONLY; |
310 | |
|
311 | 0 | if ((flags & O_FSYNC) != 0) |
312 | 0 | do_fsync = 1; |
313 | |
|
314 | 0 | flags &= ~O_FSYNC; |
315 | |
|
316 | 0 | if (!mode) |
317 | 0 | mode = GIT_FILEMODE_DEFAULT; |
318 | |
|
319 | 0 | if ((fd = p_open(path, flags, mode)) < 0) { |
320 | 0 | git_error_set(GIT_ERROR_OS, "could not open '%s' for writing", path); |
321 | 0 | return fd; |
322 | 0 | } |
323 | | |
324 | 0 | if ((error = p_write(fd, git_str_cstr(buf), git_str_len(buf))) < 0) { |
325 | 0 | git_error_set(GIT_ERROR_OS, "could not write to '%s'", path); |
326 | 0 | (void)p_close(fd); |
327 | 0 | return error; |
328 | 0 | } |
329 | | |
330 | 0 | if (do_fsync && (error = p_fsync(fd)) < 0) { |
331 | 0 | git_error_set(GIT_ERROR_OS, "could not fsync '%s'", path); |
332 | 0 | p_close(fd); |
333 | 0 | return error; |
334 | 0 | } |
335 | | |
336 | 0 | if ((error = p_close(fd)) < 0) { |
337 | 0 | git_error_set(GIT_ERROR_OS, "error while closing '%s'", path); |
338 | 0 | return error; |
339 | 0 | } |
340 | | |
341 | 0 | if (do_fsync && (flags & O_CREAT)) |
342 | 0 | error = git_futils_fsync_parent(path); |
343 | |
|
344 | 0 | return error; |
345 | 0 | } |
346 | | |
347 | | int git_futils_mv_withpath(const char *from, const char *to, const mode_t dirmode) |
348 | 0 | { |
349 | 0 | if (git_futils_mkpath2file(to, dirmode) < 0) |
350 | 0 | return -1; |
351 | | |
352 | 0 | if (p_rename(from, to) < 0) { |
353 | 0 | git_error_set(GIT_ERROR_OS, "failed to rename '%s' to '%s'", from, to); |
354 | 0 | return -1; |
355 | 0 | } |
356 | | |
357 | 0 | return 0; |
358 | 0 | } |
359 | | |
360 | | int git_futils_mmap_ro(git_map *out, git_file fd, off64_t begin, size_t len) |
361 | 11.5k | { |
362 | 11.5k | return p_mmap(out, len, GIT_PROT_READ, GIT_MAP_SHARED, fd, begin); |
363 | 11.5k | } |
364 | | |
365 | | int git_futils_mmap_ro_file(git_map *out, const char *path) |
366 | 0 | { |
367 | 0 | git_file fd = git_futils_open_ro(path); |
368 | 0 | uint64_t len; |
369 | 0 | int result; |
370 | |
|
371 | 0 | if (fd < 0) |
372 | 0 | return fd; |
373 | | |
374 | 0 | if ((result = git_futils_filesize(&len, fd)) < 0) |
375 | 0 | goto out; |
376 | | |
377 | 0 | if (!git__is_sizet(len)) { |
378 | 0 | git_error_set(GIT_ERROR_OS, "file `%s` too large to mmap", path); |
379 | 0 | result = -1; |
380 | 0 | goto out; |
381 | 0 | } |
382 | | |
383 | 0 | result = git_futils_mmap_ro(out, fd, 0, (size_t)len); |
384 | 0 | out: |
385 | 0 | p_close(fd); |
386 | 0 | return result; |
387 | 0 | } |
388 | | |
389 | | void git_futils_mmap_free(git_map *out) |
390 | 11.5k | { |
391 | 11.5k | p_munmap(out); |
392 | 11.5k | } |
393 | | |
394 | | GIT_INLINE(int) mkdir_validate_dir( |
395 | | const char *path, |
396 | | struct stat *st, |
397 | | mode_t mode, |
398 | | uint32_t flags, |
399 | | struct git_futils_mkdir_options *opts) |
400 | 10 | { |
401 | | /* with exclusive create, existing dir is an error */ |
402 | 10 | if ((flags & GIT_MKDIR_EXCL) != 0) { |
403 | 0 | git_error_set(GIT_ERROR_FILESYSTEM, |
404 | 0 | "failed to make directory '%s': directory exists", path); |
405 | 0 | return GIT_EEXISTS; |
406 | 0 | } |
407 | | |
408 | 10 | if ((S_ISREG(st->st_mode) && (flags & GIT_MKDIR_REMOVE_FILES)) || |
409 | 10 | (S_ISLNK(st->st_mode) && (flags & GIT_MKDIR_REMOVE_SYMLINKS))) { |
410 | 0 | if (p_unlink(path) < 0) { |
411 | 0 | git_error_set(GIT_ERROR_OS, "failed to remove %s '%s'", |
412 | 0 | S_ISLNK(st->st_mode) ? "symlink" : "file", path); |
413 | 0 | return GIT_EEXISTS; |
414 | 0 | } |
415 | | |
416 | 0 | opts->perfdata.mkdir_calls++; |
417 | |
|
418 | 0 | if (p_mkdir(path, mode) < 0) { |
419 | 0 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", path); |
420 | 0 | return GIT_EEXISTS; |
421 | 0 | } |
422 | 0 | } |
423 | | |
424 | 10 | else if (S_ISLNK(st->st_mode)) { |
425 | | /* Re-stat the target, make sure it's a directory */ |
426 | 0 | opts->perfdata.stat_calls++; |
427 | |
|
428 | 0 | if (p_stat(path, st) < 0) { |
429 | 0 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", path); |
430 | 0 | return GIT_EEXISTS; |
431 | 0 | } |
432 | 0 | } |
433 | | |
434 | 10 | else if (!S_ISDIR(st->st_mode)) { |
435 | 0 | git_error_set(GIT_ERROR_FILESYSTEM, |
436 | 0 | "failed to make directory '%s': directory exists", path); |
437 | 0 | return GIT_EEXISTS; |
438 | 0 | } |
439 | | |
440 | 10 | return 0; |
441 | 10 | } |
442 | | |
443 | | GIT_INLINE(int) mkdir_validate_mode( |
444 | | const char *path, |
445 | | struct stat *st, |
446 | | bool terminal_path, |
447 | | mode_t mode, |
448 | | uint32_t flags, |
449 | | struct git_futils_mkdir_options *opts) |
450 | 26 | { |
451 | 26 | if (((terminal_path && (flags & GIT_MKDIR_CHMOD) != 0) || |
452 | 26 | (flags & GIT_MKDIR_CHMOD_PATH) != 0) && st->st_mode != mode) { |
453 | |
|
454 | 0 | opts->perfdata.chmod_calls++; |
455 | |
|
456 | 0 | if (p_chmod(path, mode) < 0) { |
457 | 0 | git_error_set(GIT_ERROR_OS, "failed to set permissions on '%s'", path); |
458 | 0 | return -1; |
459 | 0 | } |
460 | 0 | } |
461 | | |
462 | 26 | return 0; |
463 | 26 | } |
464 | | |
465 | | GIT_INLINE(int) mkdir_canonicalize( |
466 | | git_str *path, |
467 | | uint32_t flags) |
468 | 18 | { |
469 | 18 | ssize_t root_len; |
470 | | |
471 | 18 | if (path->size == 0) { |
472 | 0 | git_error_set(GIT_ERROR_OS, "attempt to create empty path"); |
473 | 0 | return -1; |
474 | 0 | } |
475 | | |
476 | | /* Trim trailing slashes (except the root) */ |
477 | 18 | if ((root_len = git_fs_path_root(path->ptr)) < 0) |
478 | 0 | root_len = 0; |
479 | 18 | else |
480 | 18 | root_len++; |
481 | | |
482 | 36 | while (path->size > (size_t)root_len && path->ptr[path->size - 1] == '/') |
483 | 18 | path->ptr[--path->size] = '\0'; |
484 | | |
485 | | /* if we are not supposed to made the last element, truncate it */ |
486 | 18 | if ((flags & GIT_MKDIR_SKIP_LAST2) != 0) { |
487 | 0 | git_fs_path_dirname_r(path, path->ptr); |
488 | 0 | flags |= GIT_MKDIR_SKIP_LAST; |
489 | 0 | } |
490 | 18 | if ((flags & GIT_MKDIR_SKIP_LAST) != 0) { |
491 | 4 | git_fs_path_dirname_r(path, path->ptr); |
492 | 4 | } |
493 | | |
494 | | /* We were either given the root path (or trimmed it to |
495 | | * the root), we don't have anything to do. |
496 | | */ |
497 | 18 | if (path->size <= (size_t)root_len) |
498 | 0 | git_str_clear(path); |
499 | | |
500 | 18 | return 0; |
501 | 18 | } |
502 | | |
503 | | int git_futils_mkdir( |
504 | | const char *path, |
505 | | mode_t mode, |
506 | | uint32_t flags) |
507 | 6 | { |
508 | 6 | git_str make_path = GIT_STR_INIT, parent_path = GIT_STR_INIT; |
509 | 6 | const char *relative; |
510 | 6 | struct git_futils_mkdir_options opts = { 0 }; |
511 | 6 | struct stat st; |
512 | 6 | size_t depth = 0; |
513 | 6 | int len = 0, root_len, error; |
514 | | |
515 | 6 | if ((error = git_str_puts(&make_path, path)) < 0 || |
516 | 6 | (error = mkdir_canonicalize(&make_path, flags)) < 0 || |
517 | 6 | (error = git_str_puts(&parent_path, make_path.ptr)) < 0 || |
518 | 6 | make_path.size == 0) |
519 | 0 | goto done; |
520 | | |
521 | 6 | root_len = git_fs_path_root(make_path.ptr); |
522 | | |
523 | | /* find the first parent directory that exists. this will be used |
524 | | * as the base to dirname_relative. |
525 | | */ |
526 | 6 | for (relative = make_path.ptr; parent_path.size; ) { |
527 | 6 | error = p_lstat(parent_path.ptr, &st); |
528 | | |
529 | 6 | if (error == 0) { |
530 | 6 | break; |
531 | 6 | } else if (errno != ENOENT) { |
532 | 0 | git_error_set(GIT_ERROR_OS, "failed to stat '%s'", parent_path.ptr); |
533 | 0 | error = -1; |
534 | 0 | goto done; |
535 | 0 | } |
536 | | |
537 | 0 | depth++; |
538 | | |
539 | | /* examine the parent of the current path */ |
540 | 0 | if ((len = git_fs_path_dirname_r(&parent_path, parent_path.ptr)) < 0) { |
541 | 0 | error = len; |
542 | 0 | goto done; |
543 | 0 | } |
544 | | |
545 | 0 | GIT_ASSERT(len); |
546 | | |
547 | | /* |
548 | | * We've walked all the given path's parents and it's either relative |
549 | | * (the parent is simply '.') or rooted (the length is less than or |
550 | | * equal to length of the root path). The path may be less than the |
551 | | * root path length on Windows, where `C:` == `C:/`. |
552 | | */ |
553 | 0 | if ((len == 1 && parent_path.ptr[0] == '.') || |
554 | 0 | (len == 1 && parent_path.ptr[0] == '/') || |
555 | 0 | len <= root_len) { |
556 | 0 | relative = make_path.ptr; |
557 | 0 | break; |
558 | 0 | } |
559 | | |
560 | 0 | relative = make_path.ptr + len + 1; |
561 | | |
562 | | /* not recursive? just make this directory relative to its parent. */ |
563 | 0 | if ((flags & GIT_MKDIR_PATH) == 0) |
564 | 0 | break; |
565 | 0 | } |
566 | | |
567 | | /* we found an item at the location we're trying to create, |
568 | | * validate it. |
569 | | */ |
570 | 6 | if (depth == 0) { |
571 | 6 | error = mkdir_validate_dir(make_path.ptr, &st, mode, flags, &opts); |
572 | | |
573 | 6 | if (!error) |
574 | 6 | error = mkdir_validate_mode( |
575 | 6 | make_path.ptr, &st, true, mode, flags, &opts); |
576 | | |
577 | 6 | goto done; |
578 | 6 | } |
579 | | |
580 | | /* we already took `SKIP_LAST` and `SKIP_LAST2` into account when |
581 | | * canonicalizing `make_path`. |
582 | | */ |
583 | 0 | flags &= ~(GIT_MKDIR_SKIP_LAST2 | GIT_MKDIR_SKIP_LAST); |
584 | |
|
585 | 0 | error = git_futils_mkdir_relative(relative, |
586 | 0 | parent_path.size ? parent_path.ptr : NULL, mode, flags, &opts); |
587 | |
|
588 | 6 | done: |
589 | 6 | git_str_dispose(&make_path); |
590 | 6 | git_str_dispose(&parent_path); |
591 | 6 | return error; |
592 | 0 | } |
593 | | |
594 | | int git_futils_mkdir_r(const char *path, const mode_t mode) |
595 | 0 | { |
596 | 0 | return git_futils_mkdir(path, mode, GIT_MKDIR_PATH); |
597 | 0 | } |
598 | | |
599 | | int git_futils_mkdir_relative( |
600 | | const char *relative_path, |
601 | | const char *base, |
602 | | mode_t mode, |
603 | | uint32_t flags, |
604 | | struct git_futils_mkdir_options *opts) |
605 | 12 | { |
606 | 12 | git_str make_path = GIT_STR_INIT; |
607 | 12 | ssize_t root = 0, min_root_len; |
608 | 12 | char lastch = '/', *tail; |
609 | 12 | struct stat st; |
610 | 12 | struct git_futils_mkdir_options empty_opts = {0}; |
611 | 12 | int error; |
612 | | |
613 | 12 | if (!opts) |
614 | 12 | opts = &empty_opts; |
615 | | |
616 | | /* build path and find "root" where we should start calling mkdir */ |
617 | 12 | if (git_fs_path_join_unrooted(&make_path, relative_path, base, &root) < 0) |
618 | 0 | return -1; |
619 | | |
620 | 12 | if ((error = mkdir_canonicalize(&make_path, flags)) < 0 || |
621 | 12 | make_path.size == 0) |
622 | 0 | goto done; |
623 | | |
624 | | /* if we are not supposed to make the whole path, reset root */ |
625 | 12 | if ((flags & GIT_MKDIR_PATH) == 0) |
626 | 0 | root = git_str_rfind(&make_path, '/'); |
627 | | |
628 | | /* advance root past drive name or network mount prefix */ |
629 | 12 | min_root_len = git_fs_path_root(make_path.ptr); |
630 | 12 | if (root < min_root_len) |
631 | 0 | root = min_root_len; |
632 | 12 | while (root >= 0 && make_path.ptr[root] == '/') |
633 | 0 | ++root; |
634 | | |
635 | | /* clip root to make_path length */ |
636 | 12 | if (root > (ssize_t)make_path.size) |
637 | 0 | root = (ssize_t)make_path.size; /* i.e. NUL byte of string */ |
638 | 12 | if (root < 0) |
639 | 0 | root = 0; |
640 | | |
641 | | /* walk down tail of path making each directory */ |
642 | 32 | for (tail = &make_path.ptr[root]; *tail; *tail = lastch) { |
643 | 20 | bool mkdir_attempted = false; |
644 | | |
645 | | /* advance tail to include next path component */ |
646 | 28 | while (*tail == '/') |
647 | 8 | tail++; |
648 | 116 | while (*tail && *tail != '/') |
649 | 96 | tail++; |
650 | | |
651 | | /* truncate path at next component */ |
652 | 20 | lastch = *tail; |
653 | 20 | *tail = '\0'; |
654 | 20 | st.st_mode = 0; |
655 | | |
656 | 20 | if (opts->dir_map && git_strmap_exists(opts->dir_map, make_path.ptr)) |
657 | 0 | continue; |
658 | | |
659 | | /* See what's going on with this path component */ |
660 | 20 | opts->perfdata.stat_calls++; |
661 | | |
662 | 20 | retry_lstat: |
663 | 20 | if (p_lstat(make_path.ptr, &st) < 0) { |
664 | 16 | if (mkdir_attempted || errno != ENOENT) { |
665 | 0 | git_error_set(GIT_ERROR_OS, "cannot access component in path '%s'", make_path.ptr); |
666 | 0 | error = -1; |
667 | 0 | goto done; |
668 | 0 | } |
669 | | |
670 | 16 | git_error_clear(); |
671 | 16 | opts->perfdata.mkdir_calls++; |
672 | 16 | mkdir_attempted = true; |
673 | 16 | if (p_mkdir(make_path.ptr, mode) < 0) { |
674 | 0 | if (errno == EEXIST) |
675 | 0 | goto retry_lstat; |
676 | 0 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", make_path.ptr); |
677 | 0 | error = -1; |
678 | 0 | goto done; |
679 | 0 | } |
680 | 16 | } else { |
681 | 4 | if ((error = mkdir_validate_dir( |
682 | 4 | make_path.ptr, &st, mode, flags, opts)) < 0) |
683 | 0 | goto done; |
684 | 4 | } |
685 | | |
686 | | /* chmod if requested and necessary */ |
687 | 20 | if ((error = mkdir_validate_mode( |
688 | 20 | make_path.ptr, &st, (lastch == '\0'), mode, flags, opts)) < 0) |
689 | 0 | goto done; |
690 | | |
691 | 20 | if (opts->dir_map && opts->pool) { |
692 | 0 | char *cache_path; |
693 | 0 | size_t alloc_size; |
694 | |
|
695 | 0 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_size, make_path.size, 1); |
696 | 0 | cache_path = git_pool_malloc(opts->pool, alloc_size); |
697 | 0 | GIT_ERROR_CHECK_ALLOC(cache_path); |
698 | | |
699 | 0 | memcpy(cache_path, make_path.ptr, make_path.size + 1); |
700 | |
|
701 | 0 | if ((error = git_strmap_set(opts->dir_map, cache_path, cache_path)) < 0) |
702 | 0 | goto done; |
703 | 0 | } |
704 | 20 | } |
705 | | |
706 | 12 | error = 0; |
707 | | |
708 | | /* check that full path really is a directory if requested & needed */ |
709 | 12 | if ((flags & GIT_MKDIR_VERIFY_DIR) != 0 && |
710 | 12 | lastch != '\0') { |
711 | 0 | opts->perfdata.stat_calls++; |
712 | |
|
713 | 0 | if (p_stat(make_path.ptr, &st) < 0 || !S_ISDIR(st.st_mode)) { |
714 | 0 | git_error_set(GIT_ERROR_OS, "path is not a directory '%s'", |
715 | 0 | make_path.ptr); |
716 | 0 | error = GIT_ENOTFOUND; |
717 | 0 | } |
718 | 0 | } |
719 | | |
720 | 12 | done: |
721 | 12 | git_str_dispose(&make_path); |
722 | 12 | return error; |
723 | 12 | } |
724 | | |
725 | | typedef struct { |
726 | | const char *base; |
727 | | size_t baselen; |
728 | | uint32_t flags; |
729 | | int depth; |
730 | | } futils__rmdir_data; |
731 | | |
732 | 0 | #define FUTILS_MAX_DEPTH 100 |
733 | | |
734 | | static int futils__error_cannot_rmdir(const char *path, const char *filemsg) |
735 | 0 | { |
736 | 0 | if (filemsg) |
737 | 0 | git_error_set(GIT_ERROR_OS, "could not remove directory '%s': %s", |
738 | 0 | path, filemsg); |
739 | 0 | else |
740 | 0 | git_error_set(GIT_ERROR_OS, "could not remove directory '%s'", path); |
741 | |
|
742 | 0 | return -1; |
743 | 0 | } |
744 | | |
745 | | static int futils__rm_first_parent(git_str *path, const char *ceiling) |
746 | 0 | { |
747 | 0 | int error = GIT_ENOTFOUND; |
748 | 0 | struct stat st; |
749 | |
|
750 | 0 | while (error == GIT_ENOTFOUND) { |
751 | 0 | git_str_rtruncate_at_char(path, '/'); |
752 | |
|
753 | 0 | if (!path->size || git__prefixcmp(path->ptr, ceiling) != 0) |
754 | 0 | error = 0; |
755 | 0 | else if (p_lstat_posixly(path->ptr, &st) == 0) { |
756 | 0 | if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) |
757 | 0 | error = p_unlink(path->ptr); |
758 | 0 | else if (!S_ISDIR(st.st_mode)) |
759 | 0 | error = -1; /* fail to remove non-regular file */ |
760 | 0 | } else if (errno != ENOTDIR) |
761 | 0 | error = -1; |
762 | 0 | } |
763 | |
|
764 | 0 | if (error) |
765 | 0 | futils__error_cannot_rmdir(path->ptr, "cannot remove parent"); |
766 | |
|
767 | 0 | return error; |
768 | 0 | } |
769 | | |
770 | | static int futils__rmdir_recurs_foreach(void *opaque, git_str *path) |
771 | 0 | { |
772 | 0 | int error = 0; |
773 | 0 | futils__rmdir_data *data = opaque; |
774 | 0 | struct stat st; |
775 | |
|
776 | 0 | if (data->depth > FUTILS_MAX_DEPTH) |
777 | 0 | error = futils__error_cannot_rmdir( |
778 | 0 | path->ptr, "directory nesting too deep"); |
779 | | |
780 | 0 | else if ((error = p_lstat_posixly(path->ptr, &st)) < 0) { |
781 | 0 | if (errno == ENOENT) |
782 | 0 | error = 0; |
783 | 0 | else if (errno == ENOTDIR) { |
784 | | /* asked to remove a/b/c/d/e and a/b is a normal file */ |
785 | 0 | if ((data->flags & GIT_RMDIR_REMOVE_BLOCKERS) != 0) |
786 | 0 | error = futils__rm_first_parent(path, data->base); |
787 | 0 | else |
788 | 0 | futils__error_cannot_rmdir( |
789 | 0 | path->ptr, "parent is not directory"); |
790 | 0 | } |
791 | 0 | else |
792 | 0 | error = git_fs_path_set_error(errno, path->ptr, "rmdir"); |
793 | 0 | } |
794 | | |
795 | 0 | else if (S_ISDIR(st.st_mode)) { |
796 | 0 | data->depth++; |
797 | |
|
798 | 0 | error = git_fs_path_direach(path, 0, futils__rmdir_recurs_foreach, data); |
799 | |
|
800 | 0 | data->depth--; |
801 | |
|
802 | 0 | if (error < 0) |
803 | 0 | return error; |
804 | | |
805 | 0 | if (data->depth == 0 && (data->flags & GIT_RMDIR_SKIP_ROOT) != 0) |
806 | 0 | return error; |
807 | | |
808 | 0 | if ((error = p_rmdir(path->ptr)) < 0) { |
809 | 0 | if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) != 0 && |
810 | 0 | (errno == ENOTEMPTY || errno == EEXIST || errno == EBUSY)) |
811 | 0 | error = 0; |
812 | 0 | else |
813 | 0 | error = git_fs_path_set_error(errno, path->ptr, "rmdir"); |
814 | 0 | } |
815 | 0 | } |
816 | | |
817 | 0 | else if ((data->flags & GIT_RMDIR_REMOVE_FILES) != 0) { |
818 | 0 | if (p_unlink(path->ptr) < 0) |
819 | 0 | error = git_fs_path_set_error(errno, path->ptr, "remove"); |
820 | 0 | } |
821 | | |
822 | 0 | else if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) == 0) |
823 | 0 | error = futils__error_cannot_rmdir(path->ptr, "still present"); |
824 | | |
825 | 0 | return error; |
826 | 0 | } |
827 | | |
828 | | static int futils__rmdir_empty_parent(void *opaque, const char *path) |
829 | 0 | { |
830 | 0 | futils__rmdir_data *data = opaque; |
831 | 0 | int error = 0; |
832 | |
|
833 | 0 | if (strlen(path) <= data->baselen) |
834 | 0 | error = GIT_ITEROVER; |
835 | | |
836 | 0 | else if (p_rmdir(path) < 0) { |
837 | 0 | int en = errno; |
838 | |
|
839 | 0 | if (en == ENOENT || en == ENOTDIR) { |
840 | | /* do nothing */ |
841 | 0 | } else if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) == 0 && |
842 | 0 | en == EBUSY) { |
843 | 0 | error = git_fs_path_set_error(errno, path, "rmdir"); |
844 | 0 | } else if (en == ENOTEMPTY || en == EEXIST || en == EBUSY) { |
845 | 0 | error = GIT_ITEROVER; |
846 | 0 | } else { |
847 | 0 | error = git_fs_path_set_error(errno, path, "rmdir"); |
848 | 0 | } |
849 | 0 | } |
850 | |
|
851 | 0 | return error; |
852 | 0 | } |
853 | | |
854 | | int git_futils_rmdir_r( |
855 | | const char *path, const char *base, uint32_t flags) |
856 | 0 | { |
857 | 0 | int error; |
858 | 0 | git_str fullpath = GIT_STR_INIT; |
859 | 0 | futils__rmdir_data data; |
860 | | |
861 | | /* build path and find "root" where we should start calling mkdir */ |
862 | 0 | if (git_fs_path_join_unrooted(&fullpath, path, base, NULL) < 0) |
863 | 0 | return -1; |
864 | | |
865 | 0 | memset(&data, 0, sizeof(data)); |
866 | 0 | data.base = base ? base : ""; |
867 | 0 | data.baselen = base ? strlen(base) : 0; |
868 | 0 | data.flags = flags; |
869 | |
|
870 | 0 | error = futils__rmdir_recurs_foreach(&data, &fullpath); |
871 | | |
872 | | /* remove now-empty parents if requested */ |
873 | 0 | if (!error && (flags & GIT_RMDIR_EMPTY_PARENTS) != 0) |
874 | 0 | error = git_fs_path_walk_up( |
875 | 0 | &fullpath, base, futils__rmdir_empty_parent, &data); |
876 | |
|
877 | 0 | if (error == GIT_ITEROVER) { |
878 | 0 | git_error_clear(); |
879 | 0 | error = 0; |
880 | 0 | } |
881 | |
|
882 | 0 | git_str_dispose(&fullpath); |
883 | |
|
884 | 0 | return error; |
885 | 0 | } |
886 | | |
887 | | int git_futils_fake_symlink(const char *target, const char *path) |
888 | 0 | { |
889 | 0 | int retcode = GIT_ERROR; |
890 | 0 | int fd = git_futils_creat_withpath(path, 0755, 0644); |
891 | 0 | if (fd >= 0) { |
892 | 0 | retcode = p_write(fd, target, strlen(target)); |
893 | 0 | p_close(fd); |
894 | 0 | } |
895 | 0 | return retcode; |
896 | 0 | } |
897 | | |
898 | | static int cp_by_fd(int ifd, int ofd, bool close_fd_when_done) |
899 | 0 | { |
900 | 0 | int error = 0; |
901 | 0 | char buffer[GIT_BUFSIZE_FILEIO]; |
902 | 0 | ssize_t len = 0; |
903 | |
|
904 | 0 | while (!error && (len = p_read(ifd, buffer, sizeof(buffer))) > 0) |
905 | | /* p_write() does not have the same semantics as write(). It loops |
906 | | * internally and will return 0 when it has completed writing. |
907 | | */ |
908 | 0 | error = p_write(ofd, buffer, len); |
909 | |
|
910 | 0 | if (len < 0) { |
911 | 0 | git_error_set(GIT_ERROR_OS, "read error while copying file"); |
912 | 0 | error = (int)len; |
913 | 0 | } |
914 | |
|
915 | 0 | if (error < 0) |
916 | 0 | git_error_set(GIT_ERROR_OS, "write error while copying file"); |
917 | |
|
918 | 0 | if (close_fd_when_done) { |
919 | 0 | p_close(ifd); |
920 | 0 | p_close(ofd); |
921 | 0 | } |
922 | |
|
923 | 0 | return error; |
924 | 0 | } |
925 | | |
926 | | int git_futils_cp(const char *from, const char *to, mode_t filemode) |
927 | 0 | { |
928 | 0 | int ifd, ofd; |
929 | |
|
930 | 0 | if ((ifd = git_futils_open_ro(from)) < 0) |
931 | 0 | return ifd; |
932 | | |
933 | 0 | if ((ofd = p_open(to, O_WRONLY | O_CREAT | O_EXCL, filemode)) < 0) { |
934 | 0 | p_close(ifd); |
935 | 0 | return git_fs_path_set_error(errno, to, "open for writing"); |
936 | 0 | } |
937 | | |
938 | 0 | return cp_by_fd(ifd, ofd, true); |
939 | 0 | } |
940 | | |
941 | | int git_futils_touch(const char *path, time_t *when) |
942 | 0 | { |
943 | 0 | struct p_timeval times[2]; |
944 | 0 | int ret; |
945 | |
|
946 | 0 | times[0].tv_sec = times[1].tv_sec = when ? *when : time(NULL); |
947 | 0 | times[0].tv_usec = times[1].tv_usec = 0; |
948 | |
|
949 | 0 | ret = p_utimes(path, times); |
950 | |
|
951 | 0 | return (ret < 0) ? git_fs_path_set_error(errno, path, "touch") : 0; |
952 | 0 | } |
953 | | |
954 | | static int cp_link(const char *from, const char *to, size_t link_size) |
955 | 0 | { |
956 | 0 | int error = 0; |
957 | 0 | ssize_t read_len; |
958 | 0 | char *link_data; |
959 | 0 | size_t alloc_size; |
960 | |
|
961 | 0 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_size, link_size, 1); |
962 | 0 | link_data = git__malloc(alloc_size); |
963 | 0 | GIT_ERROR_CHECK_ALLOC(link_data); |
964 | | |
965 | 0 | read_len = p_readlink(from, link_data, link_size); |
966 | 0 | if (read_len != (ssize_t)link_size) { |
967 | 0 | git_error_set(GIT_ERROR_OS, "failed to read symlink data for '%s'", from); |
968 | 0 | error = -1; |
969 | 0 | } |
970 | 0 | else { |
971 | 0 | link_data[read_len] = '\0'; |
972 | |
|
973 | 0 | if (p_symlink(link_data, to) < 0) { |
974 | 0 | git_error_set(GIT_ERROR_OS, "could not symlink '%s' as '%s'", |
975 | 0 | link_data, to); |
976 | 0 | error = -1; |
977 | 0 | } |
978 | 0 | } |
979 | |
|
980 | 0 | git__free(link_data); |
981 | 0 | return error; |
982 | 0 | } |
983 | | |
984 | | typedef struct { |
985 | | const char *to_root; |
986 | | git_str to; |
987 | | ssize_t from_prefix; |
988 | | uint32_t flags; |
989 | | uint32_t mkdir_flags; |
990 | | mode_t dirmode; |
991 | | } cp_r_info; |
992 | | |
993 | 0 | #define GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT (1u << 10) |
994 | | |
995 | | static int _cp_r_mkdir(cp_r_info *info, git_str *from) |
996 | 0 | { |
997 | 0 | int error = 0; |
998 | | |
999 | | /* create root directory the first time we need to create a directory */ |
1000 | 0 | if ((info->flags & GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT) == 0) { |
1001 | 0 | error = git_futils_mkdir( |
1002 | 0 | info->to_root, info->dirmode, |
1003 | 0 | (info->flags & GIT_CPDIR_CHMOD_DIRS) ? GIT_MKDIR_CHMOD : 0); |
1004 | |
|
1005 | 0 | info->flags |= GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT; |
1006 | 0 | } |
1007 | | |
1008 | | /* create directory with root as base to prevent excess chmods */ |
1009 | 0 | if (!error) |
1010 | 0 | error = git_futils_mkdir_relative( |
1011 | 0 | from->ptr + info->from_prefix, info->to_root, |
1012 | 0 | info->dirmode, info->mkdir_flags, NULL); |
1013 | |
|
1014 | 0 | return error; |
1015 | 0 | } |
1016 | | |
1017 | | static int _cp_r_callback(void *ref, git_str *from) |
1018 | 0 | { |
1019 | 0 | int error = 0; |
1020 | 0 | cp_r_info *info = ref; |
1021 | 0 | struct stat from_st, to_st; |
1022 | 0 | bool exists = false; |
1023 | |
|
1024 | 0 | if ((info->flags & GIT_CPDIR_COPY_DOTFILES) == 0 && |
1025 | 0 | from->ptr[git_fs_path_basename_offset(from)] == '.') |
1026 | 0 | return 0; |
1027 | | |
1028 | 0 | if ((error = git_str_joinpath( |
1029 | 0 | &info->to, info->to_root, from->ptr + info->from_prefix)) < 0) |
1030 | 0 | return error; |
1031 | | |
1032 | 0 | if (!(error = git_fs_path_lstat(info->to.ptr, &to_st))) |
1033 | 0 | exists = true; |
1034 | 0 | else if (error != GIT_ENOTFOUND) |
1035 | 0 | return error; |
1036 | 0 | else { |
1037 | 0 | git_error_clear(); |
1038 | 0 | error = 0; |
1039 | 0 | } |
1040 | | |
1041 | 0 | if ((error = git_fs_path_lstat(from->ptr, &from_st)) < 0) |
1042 | 0 | return error; |
1043 | | |
1044 | 0 | if (S_ISDIR(from_st.st_mode)) { |
1045 | 0 | mode_t oldmode = info->dirmode; |
1046 | | |
1047 | | /* if we are not chmod'ing, then overwrite dirmode */ |
1048 | 0 | if ((info->flags & GIT_CPDIR_CHMOD_DIRS) == 0) |
1049 | 0 | info->dirmode = from_st.st_mode; |
1050 | | |
1051 | | /* make directory now if CREATE_EMPTY_DIRS is requested and needed */ |
1052 | 0 | if (!exists && (info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) != 0) |
1053 | 0 | error = _cp_r_mkdir(info, from); |
1054 | | |
1055 | | /* recurse onto target directory */ |
1056 | 0 | if (!error && (!exists || S_ISDIR(to_st.st_mode))) |
1057 | 0 | error = git_fs_path_direach(from, 0, _cp_r_callback, info); |
1058 | |
|
1059 | 0 | if (oldmode != 0) |
1060 | 0 | info->dirmode = oldmode; |
1061 | |
|
1062 | 0 | return error; |
1063 | 0 | } |
1064 | | |
1065 | 0 | if (exists) { |
1066 | 0 | if ((info->flags & GIT_CPDIR_OVERWRITE) == 0) |
1067 | 0 | return 0; |
1068 | | |
1069 | 0 | if (p_unlink(info->to.ptr) < 0) { |
1070 | 0 | git_error_set(GIT_ERROR_OS, "cannot overwrite existing file '%s'", |
1071 | 0 | info->to.ptr); |
1072 | 0 | return GIT_EEXISTS; |
1073 | 0 | } |
1074 | 0 | } |
1075 | | |
1076 | | /* Done if this isn't a regular file or a symlink */ |
1077 | 0 | if (!S_ISREG(from_st.st_mode) && |
1078 | 0 | (!S_ISLNK(from_st.st_mode) || |
1079 | 0 | (info->flags & GIT_CPDIR_COPY_SYMLINKS) == 0)) |
1080 | 0 | return 0; |
1081 | | |
1082 | | /* Make container directory on demand if needed */ |
1083 | 0 | if ((info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0 && |
1084 | 0 | (error = _cp_r_mkdir(info, from)) < 0) |
1085 | 0 | return error; |
1086 | | |
1087 | | /* make symlink or regular file */ |
1088 | 0 | if (info->flags & GIT_CPDIR_LINK_FILES) { |
1089 | 0 | if ((error = p_link(from->ptr, info->to.ptr)) < 0) |
1090 | 0 | git_error_set(GIT_ERROR_OS, "failed to link '%s'", from->ptr); |
1091 | 0 | } else if (S_ISLNK(from_st.st_mode)) { |
1092 | 0 | error = cp_link(from->ptr, info->to.ptr, (size_t)from_st.st_size); |
1093 | 0 | } else { |
1094 | 0 | mode_t usemode = from_st.st_mode; |
1095 | |
|
1096 | 0 | if ((info->flags & GIT_CPDIR_SIMPLE_TO_MODE) != 0) |
1097 | 0 | usemode = GIT_PERMS_FOR_WRITE(usemode); |
1098 | |
|
1099 | 0 | error = git_futils_cp(from->ptr, info->to.ptr, usemode); |
1100 | 0 | } |
1101 | |
|
1102 | 0 | return error; |
1103 | 0 | } |
1104 | | |
1105 | | int git_futils_cp_r( |
1106 | | const char *from, |
1107 | | const char *to, |
1108 | | uint32_t flags, |
1109 | | mode_t dirmode) |
1110 | 0 | { |
1111 | 0 | int error; |
1112 | 0 | git_str path = GIT_STR_INIT; |
1113 | 0 | cp_r_info info; |
1114 | |
|
1115 | 0 | if (git_str_joinpath(&path, from, "") < 0) /* ensure trailing slash */ |
1116 | 0 | return -1; |
1117 | | |
1118 | 0 | memset(&info, 0, sizeof(info)); |
1119 | 0 | info.to_root = to; |
1120 | 0 | info.flags = flags; |
1121 | 0 | info.dirmode = dirmode; |
1122 | 0 | info.from_prefix = path.size; |
1123 | 0 | git_str_init(&info.to, 0); |
1124 | | |
1125 | | /* precalculate mkdir flags */ |
1126 | 0 | if ((flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0) { |
1127 | | /* if not creating empty dirs, then use mkdir to create the path on |
1128 | | * demand right before files are copied. |
1129 | | */ |
1130 | 0 | info.mkdir_flags = GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST; |
1131 | 0 | if ((flags & GIT_CPDIR_CHMOD_DIRS) != 0) |
1132 | 0 | info.mkdir_flags |= GIT_MKDIR_CHMOD_PATH; |
1133 | 0 | } else { |
1134 | | /* otherwise, we will do simple mkdir as directories are encountered */ |
1135 | 0 | info.mkdir_flags = |
1136 | 0 | ((flags & GIT_CPDIR_CHMOD_DIRS) != 0) ? GIT_MKDIR_CHMOD : 0; |
1137 | 0 | } |
1138 | |
|
1139 | 0 | error = _cp_r_callback(&info, &path); |
1140 | |
|
1141 | 0 | git_str_dispose(&path); |
1142 | 0 | git_str_dispose(&info.to); |
1143 | |
|
1144 | 0 | return error; |
1145 | 0 | } |
1146 | | |
1147 | | int git_futils_filestamp_check( |
1148 | | git_futils_filestamp *stamp, const char *path) |
1149 | 29.8k | { |
1150 | 29.8k | struct stat st; |
1151 | | |
1152 | | /* if the stamp is NULL, then always reload */ |
1153 | 29.8k | if (stamp == NULL) |
1154 | 0 | return 1; |
1155 | | |
1156 | 29.8k | if (p_stat(path, &st) < 0) |
1157 | 16.4k | return GIT_ENOTFOUND; |
1158 | | |
1159 | 13.3k | if (stamp->mtime.tv_sec == st.st_mtime && |
1160 | 13.3k | #if defined(GIT_USE_NSEC) |
1161 | 13.3k | stamp->mtime.tv_nsec == st.st_mtime_nsec && |
1162 | 13.3k | #endif |
1163 | 13.3k | stamp->size == (uint64_t)st.st_size && |
1164 | 13.3k | stamp->ino == (unsigned int)st.st_ino) |
1165 | 13.3k | return 0; |
1166 | | |
1167 | 0 | stamp->mtime.tv_sec = st.st_mtime; |
1168 | 0 | #if defined(GIT_USE_NSEC) |
1169 | 0 | stamp->mtime.tv_nsec = st.st_mtime_nsec; |
1170 | 0 | #endif |
1171 | 0 | stamp->size = (uint64_t)st.st_size; |
1172 | 0 | stamp->ino = (unsigned int)st.st_ino; |
1173 | |
|
1174 | 0 | return 1; |
1175 | 13.3k | } |
1176 | | |
1177 | | void git_futils_filestamp_set( |
1178 | | git_futils_filestamp *target, const git_futils_filestamp *source) |
1179 | 0 | { |
1180 | 0 | if (source) |
1181 | 0 | memcpy(target, source, sizeof(*target)); |
1182 | 0 | else |
1183 | 0 | memset(target, 0, sizeof(*target)); |
1184 | 0 | } |
1185 | | |
1186 | | |
1187 | | void git_futils_filestamp_set_from_stat( |
1188 | | git_futils_filestamp *stamp, struct stat *st) |
1189 | 4 | { |
1190 | 4 | if (st) { |
1191 | 4 | stamp->mtime.tv_sec = st->st_mtime; |
1192 | 4 | #if defined(GIT_USE_NSEC) |
1193 | 4 | stamp->mtime.tv_nsec = st->st_mtime_nsec; |
1194 | | #else |
1195 | | stamp->mtime.tv_nsec = 0; |
1196 | | #endif |
1197 | 4 | stamp->size = (uint64_t)st->st_size; |
1198 | 4 | stamp->ino = (unsigned int)st->st_ino; |
1199 | 4 | } else { |
1200 | 0 | memset(stamp, 0, sizeof(*stamp)); |
1201 | 0 | } |
1202 | 4 | } |
1203 | | |
1204 | | int git_futils_fsync_dir(const char *path) |
1205 | 0 | { |
1206 | | #ifdef GIT_WIN32 |
1207 | | GIT_UNUSED(path); |
1208 | | return 0; |
1209 | | #else |
1210 | 0 | int fd, error = -1; |
1211 | |
|
1212 | 0 | if ((fd = p_open(path, O_RDONLY)) < 0) { |
1213 | 0 | git_error_set(GIT_ERROR_OS, "failed to open directory '%s' for fsync", path); |
1214 | 0 | return -1; |
1215 | 0 | } |
1216 | | |
1217 | 0 | if ((error = p_fsync(fd)) < 0) |
1218 | 0 | git_error_set(GIT_ERROR_OS, "failed to fsync directory '%s'", path); |
1219 | |
|
1220 | 0 | p_close(fd); |
1221 | 0 | return error; |
1222 | 0 | #endif |
1223 | 0 | } |
1224 | | |
1225 | | int git_futils_fsync_parent(const char *path) |
1226 | 0 | { |
1227 | 0 | char *parent; |
1228 | 0 | int error; |
1229 | |
|
1230 | 0 | if ((parent = git_fs_path_dirname(path)) == NULL) |
1231 | 0 | return -1; |
1232 | | |
1233 | 0 | error = git_futils_fsync_dir(parent); |
1234 | 0 | git__free(parent); |
1235 | 0 | return error; |
1236 | 0 | } |