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Commit | Line | Data |
---|---|---|
bb742ede | 1 | /* |
359fc2d2 | 2 | * Copyright (C) the libgit2 contributors. All rights reserved. |
bb742ede VM |
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 | */ | |
eae0bfdc | 7 | |
0c9c969a | 8 | #include "futils.h" |
eae0bfdc | 9 | |
a3aa5f4d | 10 | #include "global.h" |
500ec543 | 11 | #include "strmap.h" |
2e29957a | 12 | #include <ctype.h> |
997579be SS |
13 | #if GIT_WIN32 |
14 | #include "win32/findfile.h" | |
15 | #endif | |
ec250c6e | 16 | |
ce8cd006 | 17 | int git_futils_mkpath2file(const char *file_path, const mode_t mode) |
55ffebe3 | 18 | { |
ca1b6e54 | 19 | return git_futils_mkdir( |
ac2fba0e | 20 | file_path, mode, |
331e7de9 | 21 | GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST | GIT_MKDIR_VERIFY_DIR); |
55ffebe3 VM |
22 | } |
23 | ||
1d3a8aeb | 24 | int git_futils_mktmp(git_buf *path_out, const char *filename, mode_t mode) |
72a3fe42 VM |
25 | { |
26 | int fd; | |
1d3a8aeb ET |
27 | mode_t mask; |
28 | ||
29 | p_umask(mask = p_umask(0)); | |
72a3fe42 | 30 | |
97769280 RB |
31 | git_buf_sets(path_out, filename); |
32 | git_buf_puts(path_out, "_git2_XXXXXX"); | |
33 | ||
34 | if (git_buf_oom(path_out)) | |
1a481123 | 35 | return -1; |
72a3fe42 | 36 | |
1a481123 | 37 | if ((fd = p_mkstemp(path_out->ptr)) < 0) { |
ac3d33df | 38 | git_error_set(GIT_ERROR_OS, |
909d5494 | 39 | "failed to create temporary file '%s'", path_out->ptr); |
1a481123 VM |
40 | return -1; |
41 | } | |
72a3fe42 | 42 | |
1d3a8aeb | 43 | if (p_chmod(path_out->ptr, (mode & ~mask))) { |
ac3d33df | 44 | git_error_set(GIT_ERROR_OS, |
909d5494 | 45 | "failed to set permissions on file '%s'", path_out->ptr); |
1d3a8aeb ET |
46 | return -1; |
47 | } | |
48 | ||
f978b748 | 49 | return fd; |
72a3fe42 VM |
50 | } |
51 | ||
ce8cd006 | 52 | int git_futils_creat_withpath(const char *path, const mode_t dirmode, const mode_t mode) |
7dd8a9f7 | 53 | { |
1a481123 | 54 | int fd; |
55ffebe3 | 55 | |
1a481123 VM |
56 | if (git_futils_mkpath2file(path, dirmode) < 0) |
57 | return -1; | |
58 | ||
59 | fd = p_creat(path, mode); | |
60 | if (fd < 0) { | |
ac3d33df | 61 | git_error_set(GIT_ERROR_OS, "failed to create file '%s'", path); |
1a481123 VM |
62 | return -1; |
63 | } | |
64 | ||
65 | return fd; | |
55ffebe3 VM |
66 | } |
67 | ||
33127043 | 68 | int git_futils_creat_locked(const char *path, const mode_t mode) |
1549cba9 | 69 | { |
4a26915d ET |
70 | int fd = p_open(path, O_WRONLY | O_CREAT | O_EXCL | O_BINARY | O_CLOEXEC, |
71 | mode); | |
09719c50 | 72 | |
1a481123 | 73 | if (fd < 0) { |
f94825c1 | 74 | int error = errno; |
ac3d33df | 75 | git_error_set(GIT_ERROR_OS, "failed to create locked file '%s'", path); |
f94825c1 CMN |
76 | switch (error) { |
77 | case EEXIST: | |
78 | return GIT_ELOCKED; | |
79 | case ENOENT: | |
80 | return GIT_ENOTFOUND; | |
81 | default: | |
82 | return -1; | |
83 | } | |
1a481123 VM |
84 | } |
85 | ||
86 | return fd; | |
1549cba9 RG |
87 | } |
88 | ||
ce8cd006 | 89 | int git_futils_creat_locked_withpath(const char *path, const mode_t dirmode, const mode_t mode) |
1549cba9 | 90 | { |
1a481123 VM |
91 | if (git_futils_mkpath2file(path, dirmode) < 0) |
92 | return -1; | |
1549cba9 | 93 | |
f79026b4 | 94 | return git_futils_creat_locked(path, mode); |
ec250c6e AE |
95 | } |
96 | ||
deafee7b RB |
97 | int git_futils_open_ro(const char *path) |
98 | { | |
99 | int fd = p_open(path, O_RDONLY); | |
14997dc5 RB |
100 | if (fd < 0) |
101 | return git_path_set_error(errno, path, "open"); | |
deafee7b RB |
102 | return fd; |
103 | } | |
104 | ||
eae0bfdc PP |
105 | int git_futils_truncate(const char *path, int mode) |
106 | { | |
107 | int fd = p_open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, mode); | |
108 | if (fd < 0) | |
109 | return git_path_set_error(errno, path, "open"); | |
110 | ||
111 | close(fd); | |
112 | return 0; | |
113 | } | |
114 | ||
0c9c969a | 115 | int git_futils_filesize(uint64_t *out, git_file fd) |
ec250c6e | 116 | { |
7dd8a9f7 | 117 | struct stat sb; |
deafee7b RB |
118 | |
119 | if (p_fstat(fd, &sb)) { | |
ac3d33df | 120 | git_error_set(GIT_ERROR_OS, "failed to stat file descriptor"); |
deafee7b RB |
121 | return -1; |
122 | } | |
5ad739e8 | 123 | |
0c9c969a UG |
124 | if (sb.st_size < 0) { |
125 | git_error_set(GIT_ERROR_INVALID, "invalid file size"); | |
126 | return -1; | |
127 | } | |
128 | ||
129 | *out = sb.st_size; | |
130 | return 0; | |
ec250c6e | 131 | } |
4188d28f | 132 | |
b6c93aef RB |
133 | mode_t git_futils_canonical_mode(mode_t raw_mode) |
134 | { | |
135 | if (S_ISREG(raw_mode)) | |
f240acce | 136 | return S_IFREG | GIT_PERMS_CANONICAL(raw_mode); |
b6c93aef RB |
137 | else if (S_ISLNK(raw_mode)) |
138 | return S_IFLNK; | |
b6c93aef RB |
139 | else if (S_ISGITLINK(raw_mode)) |
140 | return S_IFGITLINK; | |
7c7ff7d1 RB |
141 | else if (S_ISDIR(raw_mode)) |
142 | return S_IFDIR; | |
b6c93aef RB |
143 | else |
144 | return 0; | |
145 | } | |
146 | ||
60b9d3fc RB |
147 | int git_futils_readbuffer_fd(git_buf *buf, git_file fd, size_t len) |
148 | { | |
de590550 | 149 | ssize_t read_size = 0; |
f1453c59 | 150 | size_t alloc_len; |
60b9d3fc RB |
151 | |
152 | git_buf_clear(buf); | |
153 | ||
8d534b47 | 154 | if (!git__is_ssizet(len)) { |
ac3d33df | 155 | git_error_set(GIT_ERROR_INVALID, "read too large"); |
8d534b47 ET |
156 | return -1; |
157 | } | |
158 | ||
ac3d33df | 159 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, len, 1); |
f1453c59 | 160 | if (git_buf_grow(buf, alloc_len) < 0) |
60b9d3fc RB |
161 | return -1; |
162 | ||
1f35e89d RB |
163 | /* p_read loops internally to read len bytes */ |
164 | read_size = p_read(fd, buf->ptr, len); | |
60b9d3fc | 165 | |
c859184b | 166 | if (read_size != (ssize_t)len) { |
ac3d33df JK |
167 | git_error_set(GIT_ERROR_OS, "failed to read descriptor"); |
168 | git_buf_dispose(buf); | |
1f35e89d | 169 | return -1; |
60b9d3fc RB |
170 | } |
171 | ||
1f35e89d RB |
172 | buf->ptr[read_size] = '\0'; |
173 | buf->size = read_size; | |
174 | ||
60b9d3fc RB |
175 | return 0; |
176 | } | |
177 | ||
178 | int git_futils_readbuffer_updated( | |
3547b122 | 179 | git_buf *out, const char *path, git_oid *checksum, int *updated) |
75d58430 | 180 | { |
eb597799 | 181 | int error; |
75d58430 | 182 | git_file fd; |
c3da9f06 | 183 | struct stat st; |
3547b122 | 184 | git_buf buf = GIT_BUF_INIT; |
eb597799 | 185 | git_oid checksum_new; |
75d58430 | 186 | |
3547b122 | 187 | assert(out && path && *path); |
75d58430 | 188 | |
c3da9f06 CMN |
189 | if (updated != NULL) |
190 | *updated = 0; | |
75d58430 | 191 | |
14997dc5 RB |
192 | if (p_stat(path, &st) < 0) |
193 | return git_path_set_error(errno, path, "stat"); | |
c3da9f06 | 194 | |
7c9f5bec CMN |
195 | |
196 | if (S_ISDIR(st.st_mode)) { | |
ac3d33df | 197 | git_error_set(GIT_ERROR_INVALID, "requested file is a directory"); |
7c9f5bec CMN |
198 | return GIT_ENOTFOUND; |
199 | } | |
200 | ||
201 | if (!git__is_sizet(st.st_size+1)) { | |
ac3d33df | 202 | git_error_set(GIT_ERROR_OS, "invalid regular file stat for '%s'", path); |
1a481123 | 203 | return -1; |
13224ea4 | 204 | } |
c3da9f06 | 205 | |
9ccdb211 BR |
206 | if ((fd = git_futils_open_ro(path)) < 0) |
207 | return fd; | |
208 | ||
3547b122 | 209 | if (git_futils_readbuffer_fd(&buf, fd, (size_t)st.st_size) < 0) { |
e1de726c RB |
210 | p_close(fd); |
211 | return -1; | |
75d58430 RJ |
212 | } |
213 | ||
f79026b4 | 214 | p_close(fd); |
75d58430 | 215 | |
11c8e756 ET |
216 | if (checksum) { |
217 | if ((error = git_hash_buf(&checksum_new, buf.ptr, buf.size)) < 0) { | |
ac3d33df | 218 | git_buf_dispose(&buf); |
11c8e756 ET |
219 | return error; |
220 | } | |
eb597799 | 221 | |
11c8e756 ET |
222 | /* |
223 | * If we were given a checksum, we only want to use it if it's different | |
224 | */ | |
225 | if (!git_oid__cmp(checksum, &checksum_new)) { | |
ac3d33df | 226 | git_buf_dispose(&buf); |
11c8e756 ET |
227 | if (updated) |
228 | *updated = 0; | |
eb597799 | 229 | |
11c8e756 ET |
230 | return 0; |
231 | } | |
232 | ||
233 | git_oid_cpy(checksum, &checksum_new); | |
eb597799 CMN |
234 | } |
235 | ||
236 | /* | |
237 | * If we're here, the file did change, or the user didn't have an old version | |
238 | */ | |
c3da9f06 CMN |
239 | if (updated != NULL) |
240 | *updated = 1; | |
241 | ||
3547b122 | 242 | git_buf_swap(out, &buf); |
ac3d33df | 243 | git_buf_dispose(&buf); |
3547b122 | 244 | |
13224ea4 | 245 | return 0; |
c3da9f06 CMN |
246 | } |
247 | ||
13224ea4 | 248 | int git_futils_readbuffer(git_buf *buf, const char *path) |
97769280 | 249 | { |
eb597799 | 250 | return git_futils_readbuffer_updated(buf, path, NULL, NULL); |
97769280 RB |
251 | } |
252 | ||
4742148d RB |
253 | int git_futils_writebuffer( |
254 | const git_buf *buf, const char *path, int flags, mode_t mode) | |
255 | { | |
5312621b | 256 | int fd, do_fsync = 0, error = 0; |
4742148d | 257 | |
5a747e0c | 258 | if (!flags) |
4742148d | 259 | flags = O_CREAT | O_TRUNC | O_WRONLY; |
5a747e0c | 260 | |
5312621b ET |
261 | if ((flags & O_FSYNC) != 0) |
262 | do_fsync = 1; | |
263 | ||
264 | flags &= ~O_FSYNC; | |
4742148d | 265 | |
4742148d RB |
266 | if (!mode) |
267 | mode = GIT_FILEMODE_BLOB; | |
268 | ||
269 | if ((fd = p_open(path, flags, mode)) < 0) { | |
ac3d33df | 270 | git_error_set(GIT_ERROR_OS, "could not open '%s' for writing", path); |
4742148d RB |
271 | return fd; |
272 | } | |
273 | ||
274 | if ((error = p_write(fd, git_buf_cstr(buf), git_buf_len(buf))) < 0) { | |
ac3d33df | 275 | git_error_set(GIT_ERROR_OS, "could not write to '%s'", path); |
4742148d | 276 | (void)p_close(fd); |
f5254d78 | 277 | return error; |
4742148d RB |
278 | } |
279 | ||
5312621b | 280 | if (do_fsync && (error = p_fsync(fd)) < 0) { |
ac3d33df | 281 | git_error_set(GIT_ERROR_OS, "could not fsync '%s'", path); |
5312621b ET |
282 | p_close(fd); |
283 | return error; | |
284 | } | |
285 | ||
1229e1c4 | 286 | if ((error = p_close(fd)) < 0) { |
ac3d33df | 287 | git_error_set(GIT_ERROR_OS, "error while closing '%s'", path); |
1229e1c4 ET |
288 | return error; |
289 | } | |
290 | ||
291 | if (do_fsync && (flags & O_CREAT)) | |
292 | error = git_futils_fsync_parent(path); | |
4742148d RB |
293 | |
294 | return error; | |
295 | } | |
296 | ||
ce8cd006 | 297 | int git_futils_mv_withpath(const char *from, const char *to, const mode_t dirmode) |
19a30a3f | 298 | { |
deafee7b RB |
299 | if (git_futils_mkpath2file(to, dirmode) < 0) |
300 | return -1; | |
19a30a3f | 301 | |
deafee7b | 302 | if (p_rename(from, to) < 0) { |
ac3d33df | 303 | git_error_set(GIT_ERROR_OS, "failed to rename '%s' to '%s'", from, to); |
deafee7b RB |
304 | return -1; |
305 | } | |
306 | ||
307 | return 0; | |
19a30a3f VM |
308 | } |
309 | ||
0c9c969a | 310 | int git_futils_mmap_ro(git_map *out, git_file fd, off64_t begin, size_t len) |
20e7f426 | 311 | { |
f79026b4 | 312 | return p_mmap(out, len, GIT_PROT_READ, GIT_MAP_SHARED, fd, begin); |
20e7f426 SP |
313 | } |
314 | ||
74fa4bfa RB |
315 | int git_futils_mmap_ro_file(git_map *out, const char *path) |
316 | { | |
0d0fa7c3 | 317 | git_file fd = git_futils_open_ro(path); |
0c9c969a | 318 | uint64_t len; |
da9abdd6 | 319 | int result; |
0d0fa7c3 RB |
320 | |
321 | if (fd < 0) | |
322 | return fd; | |
323 | ||
0c9c969a | 324 | if ((result = git_futils_filesize(&len, fd)) < 0) |
38b6e700 | 325 | goto out; |
9daba9f4 | 326 | |
deafee7b | 327 | if (!git__is_sizet(len)) { |
ac3d33df | 328 | git_error_set(GIT_ERROR_OS, "file `%s` too large to mmap", path); |
38b6e700 PS |
329 | result = -1; |
330 | goto out; | |
deafee7b | 331 | } |
0d0fa7c3 | 332 | |
da9abdd6 | 333 | result = git_futils_mmap_ro(out, fd, 0, (size_t)len); |
38b6e700 | 334 | out: |
74fa4bfa RB |
335 | p_close(fd); |
336 | return result; | |
337 | } | |
338 | ||
f79026b4 | 339 | void git_futils_mmap_free(git_map *out) |
20e7f426 | 340 | { |
f79026b4 | 341 | p_munmap(out); |
20e7f426 SP |
342 | } |
343 | ||
81aaf370 ET |
344 | GIT_INLINE(int) mkdir_validate_dir( |
345 | const char *path, | |
e74340b0 ET |
346 | struct stat *st, |
347 | mode_t mode, | |
348 | uint32_t flags, | |
81aaf370 | 349 | struct git_futils_mkdir_options *opts) |
e74340b0 | 350 | { |
81aaf370 ET |
351 | /* with exclusive create, existing dir is an error */ |
352 | if ((flags & GIT_MKDIR_EXCL) != 0) { | |
ac3d33df | 353 | git_error_set(GIT_ERROR_FILESYSTEM, |
909d5494 | 354 | "failed to make directory '%s': directory exists", path); |
81aaf370 ET |
355 | return GIT_EEXISTS; |
356 | } | |
357 | ||
e74340b0 ET |
358 | if ((S_ISREG(st->st_mode) && (flags & GIT_MKDIR_REMOVE_FILES)) || |
359 | (S_ISLNK(st->st_mode) && (flags & GIT_MKDIR_REMOVE_SYMLINKS))) { | |
81aaf370 | 360 | if (p_unlink(path) < 0) { |
ac3d33df | 361 | git_error_set(GIT_ERROR_OS, "failed to remove %s '%s'", |
81aaf370 | 362 | S_ISLNK(st->st_mode) ? "symlink" : "file", path); |
e74340b0 ET |
363 | return GIT_EEXISTS; |
364 | } | |
365 | ||
81aaf370 | 366 | opts->perfdata.mkdir_calls++; |
e74340b0 | 367 | |
81aaf370 | 368 | if (p_mkdir(path, mode) < 0) { |
ac3d33df | 369 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", path); |
e74340b0 ET |
370 | return GIT_EEXISTS; |
371 | } | |
372 | } | |
373 | ||
374 | else if (S_ISLNK(st->st_mode)) { | |
375 | /* Re-stat the target, make sure it's a directory */ | |
81aaf370 | 376 | opts->perfdata.stat_calls++; |
e74340b0 | 377 | |
81aaf370 | 378 | if (p_stat(path, st) < 0) { |
ac3d33df | 379 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", path); |
e74340b0 ET |
380 | return GIT_EEXISTS; |
381 | } | |
382 | } | |
383 | ||
384 | else if (!S_ISDIR(st->st_mode)) { | |
ac3d33df | 385 | git_error_set(GIT_ERROR_FILESYSTEM, |
909d5494 | 386 | "failed to make directory '%s': directory exists", path); |
e74340b0 ET |
387 | return GIT_EEXISTS; |
388 | } | |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
81aaf370 ET |
393 | GIT_INLINE(int) mkdir_validate_mode( |
394 | const char *path, | |
395 | struct stat *st, | |
396 | bool terminal_path, | |
397 | mode_t mode, | |
398 | uint32_t flags, | |
399 | struct git_futils_mkdir_options *opts) | |
400 | { | |
401 | if (((terminal_path && (flags & GIT_MKDIR_CHMOD) != 0) || | |
402 | (flags & GIT_MKDIR_CHMOD_PATH) != 0) && st->st_mode != mode) { | |
403 | ||
404 | opts->perfdata.chmod_calls++; | |
405 | ||
406 | if (p_chmod(path, mode) < 0) { | |
ac3d33df | 407 | git_error_set(GIT_ERROR_OS, "failed to set permissions on '%s'", path); |
81aaf370 ET |
408 | return -1; |
409 | } | |
410 | } | |
411 | ||
412 | return 0; | |
413 | } | |
28cdb315 | 414 | |
e24c60db ET |
415 | GIT_INLINE(int) mkdir_canonicalize( |
416 | git_buf *path, | |
417 | uint32_t flags) | |
1a5204a7 | 418 | { |
e24c60db | 419 | ssize_t root_len; |
ac2fba0e | 420 | |
e24c60db | 421 | if (path->size == 0) { |
ac3d33df | 422 | git_error_set(GIT_ERROR_OS, "attempt to create empty path"); |
ca1b6e54 | 423 | return -1; |
97769280 | 424 | } |
f0b2bfe5 | 425 | |
9cb5b0f7 | 426 | /* Trim trailing slashes (except the root) */ |
e24c60db | 427 | if ((root_len = git_path_root(path->ptr)) < 0) |
9cb5b0f7 ET |
428 | root_len = 0; |
429 | else | |
430 | root_len++; | |
431 | ||
e24c60db ET |
432 | while (path->size > (size_t)root_len && path->ptr[path->size - 1] == '/') |
433 | path->ptr[--path->size] = '\0'; | |
412de9a6 | 434 | |
ca1b6e54 | 435 | /* if we are not supposed to made the last element, truncate it */ |
3c42e4ef | 436 | if ((flags & GIT_MKDIR_SKIP_LAST2) != 0) { |
e24c60db | 437 | git_path_dirname_r(path, path->ptr); |
3c42e4ef RB |
438 | flags |= GIT_MKDIR_SKIP_LAST; |
439 | } | |
9cb5b0f7 | 440 | if ((flags & GIT_MKDIR_SKIP_LAST) != 0) { |
e24c60db | 441 | git_path_dirname_r(path, path->ptr); |
9cb5b0f7 | 442 | } |
ca1b6e54 | 443 | |
9cb5b0f7 | 444 | /* We were either given the root path (or trimmed it to |
e24c60db ET |
445 | * the root), we don't have anything to do. |
446 | */ | |
447 | if (path->size <= (size_t)root_len) | |
448 | git_buf_clear(path); | |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | int git_futils_mkdir( | |
454 | const char *path, | |
455 | mode_t mode, | |
456 | uint32_t flags) | |
457 | { | |
458 | git_buf make_path = GIT_BUF_INIT, parent_path = GIT_BUF_INIT; | |
459 | const char *relative; | |
460 | struct git_futils_mkdir_options opts = { 0 }; | |
461 | struct stat st; | |
462 | size_t depth = 0; | |
9ce2e7b3 | 463 | int len = 0, root_len, error; |
e24c60db ET |
464 | |
465 | if ((error = git_buf_puts(&make_path, path)) < 0 || | |
466 | (error = mkdir_canonicalize(&make_path, flags)) < 0 || | |
467 | (error = git_buf_puts(&parent_path, make_path.ptr)) < 0 || | |
468 | make_path.size == 0) | |
469 | goto done; | |
470 | ||
9ce2e7b3 ET |
471 | root_len = git_path_root(make_path.ptr); |
472 | ||
e24c60db ET |
473 | /* find the first parent directory that exists. this will be used |
474 | * as the base to dirname_relative. | |
9cb5b0f7 | 475 | */ |
e24c60db ET |
476 | for (relative = make_path.ptr; parent_path.size; ) { |
477 | error = p_lstat(parent_path.ptr, &st); | |
478 | ||
479 | if (error == 0) { | |
480 | break; | |
481 | } else if (errno != ENOENT) { | |
ac3d33df | 482 | git_error_set(GIT_ERROR_OS, "failed to stat '%s'", parent_path.ptr); |
0c9c969a | 483 | error = -1; |
e24c60db ET |
484 | goto done; |
485 | } | |
486 | ||
487 | depth++; | |
488 | ||
489 | /* examine the parent of the current path */ | |
490 | if ((len = git_path_dirname_r(&parent_path, parent_path.ptr)) < 0) { | |
491 | error = len; | |
492 | goto done; | |
493 | } | |
494 | ||
495 | assert(len); | |
496 | ||
6147f643 PP |
497 | /* |
498 | * We've walked all the given path's parents and it's either relative | |
499 | * (the parent is simply '.') or rooted (the length is less than or | |
500 | * equal to length of the root path). The path may be less than the | |
501 | * root path length on Windows, where `C:` == `C:/`. | |
e24c60db | 502 | */ |
0c9c969a UG |
503 | if ((len == 1 && parent_path.ptr[0] == '.') || |
504 | (len == 1 && parent_path.ptr[0] == '/') || | |
505 | len <= root_len) { | |
e24c60db ET |
506 | relative = make_path.ptr; |
507 | break; | |
508 | } | |
509 | ||
510 | relative = make_path.ptr + len + 1; | |
511 | ||
512 | /* not recursive? just make this directory relative to its parent. */ | |
513 | if ((flags & GIT_MKDIR_PATH) == 0) | |
514 | break; | |
515 | } | |
516 | ||
517 | /* we found an item at the location we're trying to create, | |
518 | * validate it. | |
519 | */ | |
520 | if (depth == 0) { | |
81aaf370 | 521 | error = mkdir_validate_dir(make_path.ptr, &st, mode, flags, &opts); |
e24c60db | 522 | |
81aaf370 ET |
523 | if (!error) |
524 | error = mkdir_validate_mode( | |
525 | make_path.ptr, &st, true, mode, flags, &opts); | |
e24c60db | 526 | |
f7e56150 RB |
527 | goto done; |
528 | } | |
529 | ||
e24c60db ET |
530 | /* we already took `SKIP_LAST` and `SKIP_LAST2` into account when |
531 | * canonicalizing `make_path`. | |
532 | */ | |
533 | flags &= ~(GIT_MKDIR_SKIP_LAST2 | GIT_MKDIR_SKIP_LAST); | |
534 | ||
535 | error = git_futils_mkdir_relative(relative, | |
536 | parent_path.size ? parent_path.ptr : NULL, mode, flags, &opts); | |
537 | ||
538 | done: | |
ac3d33df JK |
539 | git_buf_dispose(&make_path); |
540 | git_buf_dispose(&parent_path); | |
e24c60db ET |
541 | return error; |
542 | } | |
543 | ||
544 | int git_futils_mkdir_r(const char *path, const mode_t mode) | |
545 | { | |
546 | return git_futils_mkdir(path, mode, GIT_MKDIR_PATH); | |
547 | } | |
548 | ||
549 | int git_futils_mkdir_relative( | |
550 | const char *relative_path, | |
551 | const char *base, | |
552 | mode_t mode, | |
553 | uint32_t flags, | |
554 | struct git_futils_mkdir_options *opts) | |
555 | { | |
556 | git_buf make_path = GIT_BUF_INIT; | |
557 | ssize_t root = 0, min_root_len; | |
558 | char lastch = '/', *tail; | |
559 | struct stat st; | |
560 | struct git_futils_mkdir_options empty_opts = {0}; | |
561 | int error; | |
562 | ||
563 | if (!opts) | |
564 | opts = &empty_opts; | |
565 | ||
566 | /* build path and find "root" where we should start calling mkdir */ | |
567 | if (git_path_join_unrooted(&make_path, relative_path, base, &root) < 0) | |
568 | return -1; | |
569 | ||
570 | if ((error = mkdir_canonicalize(&make_path, flags)) < 0 || | |
571 | make_path.size == 0) | |
572 | goto done; | |
573 | ||
ca1b6e54 RB |
574 | /* if we are not supposed to make the whole path, reset root */ |
575 | if ((flags & GIT_MKDIR_PATH) == 0) | |
576 | root = git_buf_rfind(&make_path, '/'); | |
577 | ||
f7e56150 RB |
578 | /* advance root past drive name or network mount prefix */ |
579 | min_root_len = git_path_root(make_path.ptr); | |
580 | if (root < min_root_len) | |
581 | root = min_root_len; | |
2da72fb2 | 582 | while (root >= 0 && make_path.ptr[root] == '/') |
f7e56150 RB |
583 | ++root; |
584 | ||
ca1b6e54 | 585 | /* clip root to make_path length */ |
f7e56150 RB |
586 | if (root > (ssize_t)make_path.size) |
587 | root = (ssize_t)make_path.size; /* i.e. NUL byte of string */ | |
0e26202c RB |
588 | if (root < 0) |
589 | root = 0; | |
ca1b6e54 | 590 | |
f7e56150 RB |
591 | /* walk down tail of path making each directory */ |
592 | for (tail = &make_path.ptr[root]; *tail; *tail = lastch) { | |
d88e6e9b | 593 | bool mkdir_attempted = false; |
999d4405 | 594 | |
ca1b6e54 RB |
595 | /* advance tail to include next path component */ |
596 | while (*tail == '/') | |
597 | tail++; | |
598 | while (*tail && *tail != '/') | |
599 | tail++; | |
600 | ||
601 | /* truncate path at next component */ | |
602 | lastch = *tail; | |
603 | *tail = '\0'; | |
999d4405 | 604 | st.st_mode = 0; |
ca1b6e54 | 605 | |
500ec543 ET |
606 | if (opts->dir_map && git_strmap_exists(opts->dir_map, make_path.ptr)) |
607 | continue; | |
608 | ||
fe598f09 | 609 | /* See what's going on with this path component */ |
500ec543 | 610 | opts->perfdata.stat_calls++; |
1d50b364 | 611 | |
d88e6e9b | 612 | retry_lstat: |
fe598f09 | 613 | if (p_lstat(make_path.ptr, &st) < 0) { |
d88e6e9b | 614 | if (mkdir_attempted || errno != ENOENT) { |
ac3d33df | 615 | git_error_set(GIT_ERROR_OS, "cannot access component in path '%s'", make_path.ptr); |
d88e6e9b | 616 | error = -1; |
fe598f09 ET |
617 | goto done; |
618 | } | |
619 | ||
ac3d33df | 620 | git_error_clear(); |
d88e6e9b VM |
621 | opts->perfdata.mkdir_calls++; |
622 | mkdir_attempted = true; | |
623 | if (p_mkdir(make_path.ptr, mode) < 0) { | |
624 | if (errno == EEXIST) | |
625 | goto retry_lstat; | |
ac3d33df | 626 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", make_path.ptr); |
d88e6e9b VM |
627 | error = -1; |
628 | goto done; | |
629 | } | |
fe598f09 | 630 | } else { |
81aaf370 ET |
631 | if ((error = mkdir_validate_dir( |
632 | make_path.ptr, &st, mode, flags, opts)) < 0) | |
fe598f09 | 633 | goto done; |
d5f25204 | 634 | } |
40c44d2f | 635 | |
999d4405 | 636 | /* chmod if requested and necessary */ |
81aaf370 ET |
637 | if ((error = mkdir_validate_mode( |
638 | make_path.ptr, &st, (lastch == '\0'), mode, flags, opts)) < 0) | |
639 | goto done; | |
500ec543 ET |
640 | |
641 | if (opts->dir_map && opts->pool) { | |
f1453c59 ET |
642 | char *cache_path; |
643 | size_t alloc_size; | |
644 | ||
ac3d33df | 645 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_size, make_path.size, 1); |
0c9c969a | 646 | cache_path = git_pool_malloc(opts->pool, alloc_size); |
ac3d33df | 647 | GIT_ERROR_CHECK_ALLOC(cache_path); |
500ec543 ET |
648 | |
649 | memcpy(cache_path, make_path.ptr, make_path.size + 1); | |
650 | ||
0c9c969a | 651 | if ((error = git_strmap_set(opts->dir_map, cache_path, cache_path)) < 0) |
500ec543 ET |
652 | goto done; |
653 | } | |
a993e4fe | 654 | } |
40c44d2f | 655 | |
999d4405 RB |
656 | error = 0; |
657 | ||
658 | /* check that full path really is a directory if requested & needed */ | |
f7e56150 | 659 | if ((flags & GIT_MKDIR_VERIFY_DIR) != 0 && |
1d50b364 | 660 | lastch != '\0') { |
500ec543 | 661 | opts->perfdata.stat_calls++; |
1d50b364 ET |
662 | |
663 | if (p_stat(make_path.ptr, &st) < 0 || !S_ISDIR(st.st_mode)) { | |
ac3d33df | 664 | git_error_set(GIT_ERROR_OS, "path is not a directory '%s'", |
e74340b0 | 665 | make_path.ptr); |
1d50b364 ET |
666 | error = GIT_ENOTFOUND; |
667 | } | |
999d4405 | 668 | } |
77c3999c | 669 | |
999d4405 | 670 | done: |
ac3d33df | 671 | git_buf_dispose(&make_path); |
331e7de9 | 672 | return error; |
ca1b6e54 | 673 | } |
77c3999c | 674 | |
331e7de9 | 675 | typedef struct { |
ad9a921b | 676 | const char *base; |
7e5c8a5b | 677 | size_t baselen; |
331e7de9 | 678 | uint32_t flags; |
219d3457 | 679 | int depth; |
331e7de9 RB |
680 | } futils__rmdir_data; |
681 | ||
219d3457 RB |
682 | #define FUTILS_MAX_DEPTH 100 |
683 | ||
331e7de9 | 684 | static int futils__error_cannot_rmdir(const char *path, const char *filemsg) |
42b3a460 | 685 | { |
331e7de9 | 686 | if (filemsg) |
ac3d33df | 687 | git_error_set(GIT_ERROR_OS, "could not remove directory '%s': %s", |
331e7de9 RB |
688 | path, filemsg); |
689 | else | |
ac3d33df | 690 | git_error_set(GIT_ERROR_OS, "could not remove directory '%s'", path); |
555aa453 | 691 | |
331e7de9 RB |
692 | return -1; |
693 | } | |
deafee7b | 694 | |
ad9a921b RB |
695 | static int futils__rm_first_parent(git_buf *path, const char *ceiling) |
696 | { | |
697 | int error = GIT_ENOTFOUND; | |
698 | struct stat st; | |
699 | ||
700 | while (error == GIT_ENOTFOUND) { | |
701 | git_buf_rtruncate_at_char(path, '/'); | |
702 | ||
703 | if (!path->size || git__prefixcmp(path->ptr, ceiling) != 0) | |
704 | error = 0; | |
cccacac5 | 705 | else if (p_lstat_posixly(path->ptr, &st) == 0) { |
ad9a921b RB |
706 | if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) |
707 | error = p_unlink(path->ptr); | |
708 | else if (!S_ISDIR(st.st_mode)) | |
709 | error = -1; /* fail to remove non-regular file */ | |
710 | } else if (errno != ENOTDIR) | |
711 | error = -1; | |
712 | } | |
713 | ||
714 | if (error) | |
715 | futils__error_cannot_rmdir(path->ptr, "cannot remove parent"); | |
716 | ||
717 | return error; | |
718 | } | |
719 | ||
331e7de9 RB |
720 | static int futils__rmdir_recurs_foreach(void *opaque, git_buf *path) |
721 | { | |
96869a4e | 722 | int error = 0; |
331e7de9 | 723 | futils__rmdir_data *data = opaque; |
14997dc5 | 724 | struct stat st; |
555aa453 | 725 | |
14997dc5 RB |
726 | if (data->depth > FUTILS_MAX_DEPTH) |
727 | error = futils__error_cannot_rmdir( | |
728 | path->ptr, "directory nesting too deep"); | |
219d3457 | 729 | |
14997dc5 | 730 | else if ((error = p_lstat_posixly(path->ptr, &st)) < 0) { |
ad9a921b | 731 | if (errno == ENOENT) |
14997dc5 | 732 | error = 0; |
ad9a921b RB |
733 | else if (errno == ENOTDIR) { |
734 | /* asked to remove a/b/c/d/e and a/b is a normal file */ | |
735 | if ((data->flags & GIT_RMDIR_REMOVE_BLOCKERS) != 0) | |
14997dc5 | 736 | error = futils__rm_first_parent(path, data->base); |
ad9a921b RB |
737 | else |
738 | futils__error_cannot_rmdir( | |
739 | path->ptr, "parent is not directory"); | |
740 | } | |
741 | else | |
14997dc5 | 742 | error = git_path_set_error(errno, path->ptr, "rmdir"); |
ad9a921b RB |
743 | } |
744 | ||
745 | else if (S_ISDIR(st.st_mode)) { | |
219d3457 RB |
746 | data->depth++; |
747 | ||
14997dc5 | 748 | error = git_path_direach(path, 0, futils__rmdir_recurs_foreach, data); |
219d3457 RB |
749 | |
750 | data->depth--; | |
751 | ||
96869a4e | 752 | if (error < 0) |
25e0b157 | 753 | return error; |
96869a4e | 754 | |
219d3457 | 755 | if (data->depth == 0 && (data->flags & GIT_RMDIR_SKIP_ROOT) != 0) |
25e0b157 | 756 | return error; |
331e7de9 | 757 | |
14997dc5 | 758 | if ((error = p_rmdir(path->ptr)) < 0) { |
331e7de9 | 759 | if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) != 0 && |
e09d18ee | 760 | (errno == ENOTEMPTY || errno == EEXIST || errno == EBUSY)) |
14997dc5 | 761 | error = 0; |
331e7de9 | 762 | else |
14997dc5 | 763 | error = git_path_set_error(errno, path->ptr, "rmdir"); |
deafee7b | 764 | } |
858dba58 VM |
765 | } |
766 | ||
331e7de9 | 767 | else if ((data->flags & GIT_RMDIR_REMOVE_FILES) != 0) { |
14997dc5 RB |
768 | if (p_unlink(path->ptr) < 0) |
769 | error = git_path_set_error(errno, path->ptr, "remove"); | |
deafee7b RB |
770 | } |
771 | ||
ad9a921b | 772 | else if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) == 0) |
14997dc5 | 773 | error = futils__error_cannot_rmdir(path->ptr, "still present"); |
555aa453 | 774 | |
25e0b157 | 775 | return error; |
331e7de9 RB |
776 | } |
777 | ||
bbb988a5 | 778 | static int futils__rmdir_empty_parent(void *opaque, const char *path) |
331e7de9 | 779 | { |
7e5c8a5b | 780 | futils__rmdir_data *data = opaque; |
96869a4e | 781 | int error = 0; |
7e5c8a5b | 782 | |
bbb988a5 | 783 | if (strlen(path) <= data->baselen) |
25e0b157 | 784 | error = GIT_ITEROVER; |
331e7de9 | 785 | |
bbb988a5 | 786 | else if (p_rmdir(path) < 0) { |
331e7de9 RB |
787 | int en = errno; |
788 | ||
789 | if (en == ENOENT || en == ENOTDIR) { | |
96869a4e | 790 | /* do nothing */ |
4a0df574 ET |
791 | } else if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) == 0 && |
792 | en == EBUSY) { | |
793 | error = git_path_set_error(errno, path, "rmdir"); | |
e09d18ee | 794 | } else if (en == ENOTEMPTY || en == EEXIST || en == EBUSY) { |
331e7de9 RB |
795 | error = GIT_ITEROVER; |
796 | } else { | |
bbb988a5 | 797 | error = git_path_set_error(errno, path, "rmdir"); |
331e7de9 RB |
798 | } |
799 | } | |
800 | ||
25e0b157 | 801 | return error; |
42b3a460 MS |
802 | } |
803 | ||
0d64bef9 | 804 | int git_futils_rmdir_r( |
331e7de9 | 805 | const char *path, const char *base, uint32_t flags) |
42b3a460 | 806 | { |
97769280 | 807 | int error; |
0d64bef9 | 808 | git_buf fullpath = GIT_BUF_INIT; |
96869a4e | 809 | futils__rmdir_data data; |
0d64bef9 RB |
810 | |
811 | /* build path and find "root" where we should start calling mkdir */ | |
812 | if (git_path_join_unrooted(&fullpath, path, base, NULL) < 0) | |
813 | return -1; | |
814 | ||
96869a4e | 815 | memset(&data, 0, sizeof(data)); |
7e5c8a5b RB |
816 | data.base = base ? base : ""; |
817 | data.baselen = base ? strlen(base) : 0; | |
818 | data.flags = flags; | |
331e7de9 RB |
819 | |
820 | error = futils__rmdir_recurs_foreach(&data, &fullpath); | |
821 | ||
822 | /* remove now-empty parents if requested */ | |
96869a4e | 823 | if (!error && (flags & GIT_RMDIR_EMPTY_PARENTS) != 0) |
331e7de9 RB |
824 | error = git_path_walk_up( |
825 | &fullpath, base, futils__rmdir_empty_parent, &data); | |
826 | ||
25e0b157 | 827 | if (error == GIT_ITEROVER) { |
ac3d33df | 828 | git_error_clear(); |
96869a4e | 829 | error = 0; |
25e0b157 | 830 | } |
0d64bef9 | 831 | |
ac3d33df | 832 | git_buf_dispose(&fullpath); |
97769280 | 833 | |
97769280 | 834 | return error; |
42b3a460 MS |
835 | } |
836 | ||
8651c10f BS |
837 | int git_futils_fake_symlink(const char *old, const char *new) |
838 | { | |
839 | int retcode = GIT_ERROR; | |
840 | int fd = git_futils_creat_withpath(new, 0755, 0644); | |
841 | if (fd >= 0) { | |
842 | retcode = p_write(fd, old, strlen(old)); | |
843 | p_close(fd); | |
844 | } | |
845 | return retcode; | |
846 | } | |
ca1b6e54 | 847 | |
85bd1746 | 848 | static int cp_by_fd(int ifd, int ofd, bool close_fd_when_done) |
ca1b6e54 RB |
849 | { |
850 | int error = 0; | |
7dd22538 | 851 | char buffer[FILEIO_BUFSIZE]; |
ca1b6e54 RB |
852 | ssize_t len = 0; |
853 | ||
854 | while (!error && (len = p_read(ifd, buffer, sizeof(buffer))) > 0) | |
855 | /* p_write() does not have the same semantics as write(). It loops | |
856 | * internally and will return 0 when it has completed writing. | |
857 | */ | |
858 | error = p_write(ofd, buffer, len); | |
859 | ||
860 | if (len < 0) { | |
ac3d33df | 861 | git_error_set(GIT_ERROR_OS, "read error while copying file"); |
ca1b6e54 RB |
862 | error = (int)len; |
863 | } | |
864 | ||
edef91ee | 865 | if (error < 0) |
ac3d33df | 866 | git_error_set(GIT_ERROR_OS, "write error while copying file"); |
edef91ee | 867 | |
85bd1746 | 868 | if (close_fd_when_done) { |
ca1b6e54 RB |
869 | p_close(ifd); |
870 | p_close(ofd); | |
871 | } | |
872 | ||
873 | return error; | |
874 | } | |
875 | ||
85bd1746 | 876 | int git_futils_cp(const char *from, const char *to, mode_t filemode) |
ca1b6e54 RB |
877 | { |
878 | int ifd, ofd; | |
879 | ||
ca1b6e54 RB |
880 | if ((ifd = git_futils_open_ro(from)) < 0) |
881 | return ifd; | |
882 | ||
883 | if ((ofd = p_open(to, O_WRONLY | O_CREAT | O_EXCL, filemode)) < 0) { | |
ca1b6e54 | 884 | p_close(ifd); |
14997dc5 | 885 | return git_path_set_error(errno, to, "open for writing"); |
ca1b6e54 RB |
886 | } |
887 | ||
85bd1746 | 888 | return cp_by_fd(ifd, ofd, true); |
ca1b6e54 RB |
889 | } |
890 | ||
27051d4e | 891 | int git_futils_touch(const char *path, time_t *when) |
8f09a98e ET |
892 | { |
893 | struct p_timeval times[2]; | |
8f09a98e ET |
894 | int ret; |
895 | ||
27051d4e ET |
896 | times[0].tv_sec = times[1].tv_sec = when ? *when : time(NULL); |
897 | times[0].tv_usec = times[1].tv_usec = 0; | |
8f09a98e ET |
898 | |
899 | ret = p_utimes(path, times); | |
900 | ||
901 | return (ret < 0) ? git_path_set_error(errno, path, "touch") : 0; | |
902 | } | |
903 | ||
85bd1746 | 904 | static int cp_link(const char *from, const char *to, size_t link_size) |
ca1b6e54 RB |
905 | { |
906 | int error = 0; | |
907 | ssize_t read_len; | |
392702ee | 908 | char *link_data; |
f1453c59 | 909 | size_t alloc_size; |
392702ee | 910 | |
ac3d33df | 911 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_size, link_size, 1); |
f1453c59 | 912 | link_data = git__malloc(alloc_size); |
ac3d33df | 913 | GIT_ERROR_CHECK_ALLOC(link_data); |
ca1b6e54 | 914 | |
85bd1746 RB |
915 | read_len = p_readlink(from, link_data, link_size); |
916 | if (read_len != (ssize_t)link_size) { | |
ac3d33df | 917 | git_error_set(GIT_ERROR_OS, "failed to read symlink data for '%s'", from); |
ca1b6e54 RB |
918 | error = -1; |
919 | } | |
920 | else { | |
921 | link_data[read_len] = '\0'; | |
922 | ||
923 | if (p_symlink(link_data, to) < 0) { | |
ac3d33df | 924 | git_error_set(GIT_ERROR_OS, "could not symlink '%s' as '%s'", |
ca1b6e54 RB |
925 | link_data, to); |
926 | error = -1; | |
927 | } | |
928 | } | |
929 | ||
930 | git__free(link_data); | |
931 | return error; | |
932 | } | |
933 | ||
934 | typedef struct { | |
935 | const char *to_root; | |
936 | git_buf to; | |
937 | ssize_t from_prefix; | |
938 | uint32_t flags; | |
939 | uint32_t mkdir_flags; | |
940 | mode_t dirmode; | |
941 | } cp_r_info; | |
942 | ||
3c42e4ef RB |
943 | #define GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT (1u << 10) |
944 | ||
945 | static int _cp_r_mkdir(cp_r_info *info, git_buf *from) | |
946 | { | |
947 | int error = 0; | |
948 | ||
949 | /* create root directory the first time we need to create a directory */ | |
950 | if ((info->flags & GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT) == 0) { | |
951 | error = git_futils_mkdir( | |
ac2fba0e | 952 | info->to_root, info->dirmode, |
18f08264 | 953 | (info->flags & GIT_CPDIR_CHMOD_DIRS) ? GIT_MKDIR_CHMOD : 0); |
3c42e4ef RB |
954 | |
955 | info->flags |= GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT; | |
956 | } | |
957 | ||
958 | /* create directory with root as base to prevent excess chmods */ | |
959 | if (!error) | |
ac2fba0e | 960 | error = git_futils_mkdir_relative( |
3c42e4ef | 961 | from->ptr + info->from_prefix, info->to_root, |
ac2fba0e | 962 | info->dirmode, info->mkdir_flags, NULL); |
3c42e4ef RB |
963 | |
964 | return error; | |
965 | } | |
966 | ||
ca1b6e54 RB |
967 | static int _cp_r_callback(void *ref, git_buf *from) |
968 | { | |
3c42e4ef | 969 | int error = 0; |
ca1b6e54 RB |
970 | cp_r_info *info = ref; |
971 | struct stat from_st, to_st; | |
972 | bool exists = false; | |
973 | ||
974 | if ((info->flags & GIT_CPDIR_COPY_DOTFILES) == 0 && | |
975 | from->ptr[git_path_basename_offset(from)] == '.') | |
976 | return 0; | |
977 | ||
96869a4e RB |
978 | if ((error = git_buf_joinpath( |
979 | &info->to, info->to_root, from->ptr + info->from_prefix)) < 0) | |
25e0b157 | 980 | return error; |
ca1b6e54 | 981 | |
14997dc5 | 982 | if (!(error = git_path_lstat(info->to.ptr, &to_st))) |
ca1b6e54 | 983 | exists = true; |
14997dc5 | 984 | else if (error != GIT_ENOTFOUND) |
25e0b157 | 985 | return error; |
14997dc5 | 986 | else { |
ac3d33df | 987 | git_error_clear(); |
14997dc5 RB |
988 | error = 0; |
989 | } | |
ca1b6e54 | 990 | |
3c42e4ef | 991 | if ((error = git_path_lstat(from->ptr, &from_st)) < 0) |
25e0b157 | 992 | return error; |
ca1b6e54 RB |
993 | |
994 | if (S_ISDIR(from_st.st_mode)) { | |
ca1b6e54 RB |
995 | mode_t oldmode = info->dirmode; |
996 | ||
997 | /* if we are not chmod'ing, then overwrite dirmode */ | |
18f08264 | 998 | if ((info->flags & GIT_CPDIR_CHMOD_DIRS) == 0) |
ca1b6e54 RB |
999 | info->dirmode = from_st.st_mode; |
1000 | ||
1001 | /* make directory now if CREATE_EMPTY_DIRS is requested and needed */ | |
1002 | if (!exists && (info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) != 0) | |
3c42e4ef | 1003 | error = _cp_r_mkdir(info, from); |
ca1b6e54 RB |
1004 | |
1005 | /* recurse onto target directory */ | |
25e0b157 | 1006 | if (!error && (!exists || S_ISDIR(to_st.st_mode))) |
219d3457 | 1007 | error = git_path_direach(from, 0, _cp_r_callback, info); |
ca1b6e54 RB |
1008 | |
1009 | if (oldmode != 0) | |
1010 | info->dirmode = oldmode; | |
1011 | ||
25e0b157 | 1012 | return error; |
ca1b6e54 RB |
1013 | } |
1014 | ||
1015 | if (exists) { | |
1016 | if ((info->flags & GIT_CPDIR_OVERWRITE) == 0) | |
1017 | return 0; | |
1018 | ||
1019 | if (p_unlink(info->to.ptr) < 0) { | |
ac3d33df | 1020 | git_error_set(GIT_ERROR_OS, "cannot overwrite existing file '%s'", |
ca1b6e54 | 1021 | info->to.ptr); |
25e0b157 | 1022 | return GIT_EEXISTS; |
ca1b6e54 RB |
1023 | } |
1024 | } | |
1025 | ||
1026 | /* Done if this isn't a regular file or a symlink */ | |
1027 | if (!S_ISREG(from_st.st_mode) && | |
1028 | (!S_ISLNK(from_st.st_mode) || | |
1029 | (info->flags & GIT_CPDIR_COPY_SYMLINKS) == 0)) | |
1030 | return 0; | |
1031 | ||
1032 | /* Make container directory on demand if needed */ | |
1033 | if ((info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0 && | |
3c42e4ef | 1034 | (error = _cp_r_mkdir(info, from)) < 0) |
25e0b157 | 1035 | return error; |
ca1b6e54 RB |
1036 | |
1037 | /* make symlink or regular file */ | |
94f742ba | 1038 | if (info->flags & GIT_CPDIR_LINK_FILES) { |
54738368 | 1039 | if ((error = p_link(from->ptr, info->to.ptr)) < 0) |
ac3d33df | 1040 | git_error_set(GIT_ERROR_OS, "failed to link '%s'", from->ptr); |
94f742ba | 1041 | } else if (S_ISLNK(from_st.st_mode)) { |
3c42e4ef | 1042 | error = cp_link(from->ptr, info->to.ptr, (size_t)from_st.st_size); |
94f742ba | 1043 | } else { |
3c42e4ef RB |
1044 | mode_t usemode = from_st.st_mode; |
1045 | ||
18f08264 | 1046 | if ((info->flags & GIT_CPDIR_SIMPLE_TO_MODE) != 0) |
f240acce | 1047 | usemode = GIT_PERMS_FOR_WRITE(usemode); |
3c42e4ef RB |
1048 | |
1049 | error = git_futils_cp(from->ptr, info->to.ptr, usemode); | |
3c42e4ef RB |
1050 | } |
1051 | ||
25e0b157 | 1052 | return error; |
ca1b6e54 RB |
1053 | } |
1054 | ||
1055 | int git_futils_cp_r( | |
1056 | const char *from, | |
1057 | const char *to, | |
1058 | uint32_t flags, | |
1059 | mode_t dirmode) | |
1060 | { | |
1061 | int error; | |
1062 | git_buf path = GIT_BUF_INIT; | |
1063 | cp_r_info info; | |
1064 | ||
3c42e4ef | 1065 | if (git_buf_joinpath(&path, from, "") < 0) /* ensure trailing slash */ |
ca1b6e54 RB |
1066 | return -1; |
1067 | ||
96869a4e | 1068 | memset(&info, 0, sizeof(info)); |
ca1b6e54 RB |
1069 | info.to_root = to; |
1070 | info.flags = flags; | |
1071 | info.dirmode = dirmode; | |
1072 | info.from_prefix = path.size; | |
1073 | git_buf_init(&info.to, 0); | |
1074 | ||
1075 | /* precalculate mkdir flags */ | |
1076 | if ((flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0) { | |
3c42e4ef RB |
1077 | /* if not creating empty dirs, then use mkdir to create the path on |
1078 | * demand right before files are copied. | |
1079 | */ | |
ca1b6e54 | 1080 | info.mkdir_flags = GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST; |
18f08264 | 1081 | if ((flags & GIT_CPDIR_CHMOD_DIRS) != 0) |
ca1b6e54 RB |
1082 | info.mkdir_flags |= GIT_MKDIR_CHMOD_PATH; |
1083 | } else { | |
3c42e4ef | 1084 | /* otherwise, we will do simple mkdir as directories are encountered */ |
ca1b6e54 | 1085 | info.mkdir_flags = |
18f08264 | 1086 | ((flags & GIT_CPDIR_CHMOD_DIRS) != 0) ? GIT_MKDIR_CHMOD : 0; |
ca1b6e54 RB |
1087 | } |
1088 | ||
1089 | error = _cp_r_callback(&info, &path); | |
1090 | ||
ac3d33df JK |
1091 | git_buf_dispose(&path); |
1092 | git_buf_dispose(&info.to); | |
ca1b6e54 RB |
1093 | |
1094 | return error; | |
1095 | } | |
744cc03e | 1096 | |
c1f61af6 VM |
1097 | int git_futils_filestamp_check( |
1098 | git_futils_filestamp *stamp, const char *path) | |
744cc03e RB |
1099 | { |
1100 | struct stat st; | |
1101 | ||
c8b511f3 RB |
1102 | /* if the stamp is NULL, then always reload */ |
1103 | if (stamp == NULL) | |
744cc03e RB |
1104 | return 1; |
1105 | ||
7d490872 | 1106 | if (p_stat(path, &st) < 0) |
744cc03e RB |
1107 | return GIT_ENOTFOUND; |
1108 | ||
3d6a42d1 | 1109 | if (stamp->mtime.tv_sec == st.st_mtime && |
0226f7dd | 1110 | #if defined(GIT_USE_NSEC) |
3d6a42d1 | 1111 | stamp->mtime.tv_nsec == st.st_mtime_nsec && |
0226f7dd | 1112 | #endif |
0c9c969a | 1113 | stamp->size == (uint64_t)st.st_size && |
c8b511f3 | 1114 | stamp->ino == (unsigned int)st.st_ino) |
744cc03e RB |
1115 | return 0; |
1116 | ||
3d6a42d1 | 1117 | stamp->mtime.tv_sec = st.st_mtime; |
0226f7dd | 1118 | #if defined(GIT_USE_NSEC) |
3d6a42d1 | 1119 | stamp->mtime.tv_nsec = st.st_mtime_nsec; |
0226f7dd | 1120 | #endif |
0c9c969a | 1121 | stamp->size = (uint64_t)st.st_size; |
c8b511f3 | 1122 | stamp->ino = (unsigned int)st.st_ino; |
744cc03e RB |
1123 | |
1124 | return 1; | |
1125 | } | |
1126 | ||
c1f61af6 VM |
1127 | void git_futils_filestamp_set( |
1128 | git_futils_filestamp *target, const git_futils_filestamp *source) | |
c8b511f3 RB |
1129 | { |
1130 | assert(target); | |
1131 | ||
1132 | if (source) | |
1133 | memcpy(target, source, sizeof(*target)); | |
1134 | else | |
1135 | memset(target, 0, sizeof(*target)); | |
1136 | } | |
823c0e9c RB |
1137 | |
1138 | ||
1139 | void git_futils_filestamp_set_from_stat( | |
1140 | git_futils_filestamp *stamp, struct stat *st) | |
1141 | { | |
1142 | if (st) { | |
3d6a42d1 ET |
1143 | stamp->mtime.tv_sec = st->st_mtime; |
1144 | #if defined(GIT_USE_NSEC) | |
1145 | stamp->mtime.tv_nsec = st->st_mtime_nsec; | |
1146 | #else | |
973a09a4 AR |
1147 | stamp->mtime.tv_nsec = 0; |
1148 | #endif | |
0c9c969a | 1149 | stamp->size = (uint64_t)st->st_size; |
823c0e9c RB |
1150 | stamp->ino = (unsigned int)st->st_ino; |
1151 | } else { | |
1152 | memset(stamp, 0, sizeof(*stamp)); | |
1153 | } | |
1154 | } | |
1229e1c4 ET |
1155 | |
1156 | int git_futils_fsync_dir(const char *path) | |
1157 | { | |
3ac05d11 ET |
1158 | #ifdef GIT_WIN32 |
1159 | GIT_UNUSED(path); | |
1160 | return 0; | |
1161 | #else | |
1229e1c4 ET |
1162 | int fd, error = -1; |
1163 | ||
1164 | if ((fd = p_open(path, O_RDONLY)) < 0) { | |
ac3d33df | 1165 | git_error_set(GIT_ERROR_OS, "failed to open directory '%s' for fsync", path); |
1229e1c4 ET |
1166 | return -1; |
1167 | } | |
1168 | ||
1169 | if ((error = p_fsync(fd)) < 0) | |
ac3d33df | 1170 | git_error_set(GIT_ERROR_OS, "failed to fsync directory '%s'", path); |
1229e1c4 ET |
1171 | |
1172 | p_close(fd); | |
1173 | return error; | |
3ac05d11 | 1174 | #endif |
1229e1c4 ET |
1175 | } |
1176 | ||
1177 | int git_futils_fsync_parent(const char *path) | |
1178 | { | |
0c28c72d PS |
1179 | char *parent; |
1180 | int error; | |
1181 | ||
1182 | if ((parent = git_path_dirname(path)) == NULL) | |
1183 | return -1; | |
1229e1c4 | 1184 | |
0c28c72d | 1185 | error = git_futils_fsync_dir(parent); |
1229e1c4 ET |
1186 | git__free(parent); |
1187 | return error; | |
1188 | } |