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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 | |
ec250c6e | 8 | #include "fileops.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 | ||
f79026b4 | 115 | git_off_t git_futils_filesize(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 | |
ec250c6e AE |
124 | return sb.st_size; |
125 | } | |
4188d28f | 126 | |
b6c93aef RB |
127 | mode_t git_futils_canonical_mode(mode_t raw_mode) |
128 | { | |
129 | if (S_ISREG(raw_mode)) | |
f240acce | 130 | return S_IFREG | GIT_PERMS_CANONICAL(raw_mode); |
b6c93aef RB |
131 | else if (S_ISLNK(raw_mode)) |
132 | return S_IFLNK; | |
b6c93aef RB |
133 | else if (S_ISGITLINK(raw_mode)) |
134 | return S_IFGITLINK; | |
7c7ff7d1 RB |
135 | else if (S_ISDIR(raw_mode)) |
136 | return S_IFDIR; | |
b6c93aef RB |
137 | else |
138 | return 0; | |
139 | } | |
140 | ||
60b9d3fc RB |
141 | int git_futils_readbuffer_fd(git_buf *buf, git_file fd, size_t len) |
142 | { | |
de590550 | 143 | ssize_t read_size = 0; |
f1453c59 | 144 | size_t alloc_len; |
60b9d3fc RB |
145 | |
146 | git_buf_clear(buf); | |
147 | ||
8d534b47 | 148 | if (!git__is_ssizet(len)) { |
ac3d33df | 149 | git_error_set(GIT_ERROR_INVALID, "read too large"); |
8d534b47 ET |
150 | return -1; |
151 | } | |
152 | ||
ac3d33df | 153 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, len, 1); |
f1453c59 | 154 | if (git_buf_grow(buf, alloc_len) < 0) |
60b9d3fc RB |
155 | return -1; |
156 | ||
1f35e89d RB |
157 | /* p_read loops internally to read len bytes */ |
158 | read_size = p_read(fd, buf->ptr, len); | |
60b9d3fc | 159 | |
c859184b | 160 | if (read_size != (ssize_t)len) { |
ac3d33df JK |
161 | git_error_set(GIT_ERROR_OS, "failed to read descriptor"); |
162 | git_buf_dispose(buf); | |
1f35e89d | 163 | return -1; |
60b9d3fc RB |
164 | } |
165 | ||
1f35e89d RB |
166 | buf->ptr[read_size] = '\0'; |
167 | buf->size = read_size; | |
168 | ||
60b9d3fc RB |
169 | return 0; |
170 | } | |
171 | ||
172 | int git_futils_readbuffer_updated( | |
3547b122 | 173 | git_buf *out, const char *path, git_oid *checksum, int *updated) |
75d58430 | 174 | { |
eb597799 | 175 | int error; |
75d58430 | 176 | git_file fd; |
c3da9f06 | 177 | struct stat st; |
3547b122 | 178 | git_buf buf = GIT_BUF_INIT; |
eb597799 | 179 | git_oid checksum_new; |
75d58430 | 180 | |
3547b122 | 181 | assert(out && path && *path); |
75d58430 | 182 | |
c3da9f06 CMN |
183 | if (updated != NULL) |
184 | *updated = 0; | |
75d58430 | 185 | |
14997dc5 RB |
186 | if (p_stat(path, &st) < 0) |
187 | return git_path_set_error(errno, path, "stat"); | |
c3da9f06 | 188 | |
7c9f5bec CMN |
189 | |
190 | if (S_ISDIR(st.st_mode)) { | |
ac3d33df | 191 | git_error_set(GIT_ERROR_INVALID, "requested file is a directory"); |
7c9f5bec CMN |
192 | return GIT_ENOTFOUND; |
193 | } | |
194 | ||
195 | if (!git__is_sizet(st.st_size+1)) { | |
ac3d33df | 196 | git_error_set(GIT_ERROR_OS, "invalid regular file stat for '%s'", path); |
1a481123 | 197 | return -1; |
13224ea4 | 198 | } |
c3da9f06 | 199 | |
9ccdb211 BR |
200 | if ((fd = git_futils_open_ro(path)) < 0) |
201 | return fd; | |
202 | ||
3547b122 | 203 | if (git_futils_readbuffer_fd(&buf, fd, (size_t)st.st_size) < 0) { |
e1de726c RB |
204 | p_close(fd); |
205 | return -1; | |
75d58430 RJ |
206 | } |
207 | ||
f79026b4 | 208 | p_close(fd); |
75d58430 | 209 | |
11c8e756 ET |
210 | if (checksum) { |
211 | if ((error = git_hash_buf(&checksum_new, buf.ptr, buf.size)) < 0) { | |
ac3d33df | 212 | git_buf_dispose(&buf); |
11c8e756 ET |
213 | return error; |
214 | } | |
eb597799 | 215 | |
11c8e756 ET |
216 | /* |
217 | * If we were given a checksum, we only want to use it if it's different | |
218 | */ | |
219 | if (!git_oid__cmp(checksum, &checksum_new)) { | |
ac3d33df | 220 | git_buf_dispose(&buf); |
11c8e756 ET |
221 | if (updated) |
222 | *updated = 0; | |
eb597799 | 223 | |
11c8e756 ET |
224 | return 0; |
225 | } | |
226 | ||
227 | git_oid_cpy(checksum, &checksum_new); | |
eb597799 CMN |
228 | } |
229 | ||
230 | /* | |
231 | * If we're here, the file did change, or the user didn't have an old version | |
232 | */ | |
c3da9f06 CMN |
233 | if (updated != NULL) |
234 | *updated = 1; | |
235 | ||
3547b122 | 236 | git_buf_swap(out, &buf); |
ac3d33df | 237 | git_buf_dispose(&buf); |
3547b122 | 238 | |
13224ea4 | 239 | return 0; |
c3da9f06 CMN |
240 | } |
241 | ||
13224ea4 | 242 | int git_futils_readbuffer(git_buf *buf, const char *path) |
97769280 | 243 | { |
eb597799 | 244 | return git_futils_readbuffer_updated(buf, path, NULL, NULL); |
97769280 RB |
245 | } |
246 | ||
4742148d RB |
247 | int git_futils_writebuffer( |
248 | const git_buf *buf, const char *path, int flags, mode_t mode) | |
249 | { | |
5312621b | 250 | int fd, do_fsync = 0, error = 0; |
4742148d | 251 | |
5a747e0c | 252 | if (!flags) |
4742148d | 253 | flags = O_CREAT | O_TRUNC | O_WRONLY; |
5a747e0c | 254 | |
5312621b ET |
255 | if ((flags & O_FSYNC) != 0) |
256 | do_fsync = 1; | |
257 | ||
258 | flags &= ~O_FSYNC; | |
4742148d | 259 | |
4742148d RB |
260 | if (!mode) |
261 | mode = GIT_FILEMODE_BLOB; | |
262 | ||
263 | if ((fd = p_open(path, flags, mode)) < 0) { | |
ac3d33df | 264 | git_error_set(GIT_ERROR_OS, "could not open '%s' for writing", path); |
4742148d RB |
265 | return fd; |
266 | } | |
267 | ||
268 | if ((error = p_write(fd, git_buf_cstr(buf), git_buf_len(buf))) < 0) { | |
ac3d33df | 269 | git_error_set(GIT_ERROR_OS, "could not write to '%s'", path); |
4742148d | 270 | (void)p_close(fd); |
f5254d78 | 271 | return error; |
4742148d RB |
272 | } |
273 | ||
5312621b | 274 | if (do_fsync && (error = p_fsync(fd)) < 0) { |
ac3d33df | 275 | git_error_set(GIT_ERROR_OS, "could not fsync '%s'", path); |
5312621b ET |
276 | p_close(fd); |
277 | return error; | |
278 | } | |
279 | ||
1229e1c4 | 280 | if ((error = p_close(fd)) < 0) { |
ac3d33df | 281 | git_error_set(GIT_ERROR_OS, "error while closing '%s'", path); |
1229e1c4 ET |
282 | return error; |
283 | } | |
284 | ||
285 | if (do_fsync && (flags & O_CREAT)) | |
286 | error = git_futils_fsync_parent(path); | |
4742148d RB |
287 | |
288 | return error; | |
289 | } | |
290 | ||
ce8cd006 | 291 | int git_futils_mv_withpath(const char *from, const char *to, const mode_t dirmode) |
19a30a3f | 292 | { |
deafee7b RB |
293 | if (git_futils_mkpath2file(to, dirmode) < 0) |
294 | return -1; | |
19a30a3f | 295 | |
deafee7b | 296 | if (p_rename(from, to) < 0) { |
ac3d33df | 297 | git_error_set(GIT_ERROR_OS, "failed to rename '%s' to '%s'", from, to); |
deafee7b RB |
298 | return -1; |
299 | } | |
300 | ||
301 | return 0; | |
19a30a3f VM |
302 | } |
303 | ||
f79026b4 | 304 | int git_futils_mmap_ro(git_map *out, git_file fd, git_off_t begin, size_t len) |
20e7f426 | 305 | { |
f79026b4 | 306 | return p_mmap(out, len, GIT_PROT_READ, GIT_MAP_SHARED, fd, begin); |
20e7f426 SP |
307 | } |
308 | ||
74fa4bfa RB |
309 | int git_futils_mmap_ro_file(git_map *out, const char *path) |
310 | { | |
0d0fa7c3 RB |
311 | git_file fd = git_futils_open_ro(path); |
312 | git_off_t len; | |
da9abdd6 | 313 | int result; |
0d0fa7c3 RB |
314 | |
315 | if (fd < 0) | |
316 | return fd; | |
317 | ||
38b6e700 PS |
318 | if ((len = git_futils_filesize(fd)) < 0) { |
319 | result = -1; | |
320 | goto out; | |
321 | } | |
9daba9f4 | 322 | |
deafee7b | 323 | if (!git__is_sizet(len)) { |
ac3d33df | 324 | git_error_set(GIT_ERROR_OS, "file `%s` too large to mmap", path); |
38b6e700 PS |
325 | result = -1; |
326 | goto out; | |
deafee7b | 327 | } |
0d0fa7c3 | 328 | |
da9abdd6 | 329 | result = git_futils_mmap_ro(out, fd, 0, (size_t)len); |
38b6e700 | 330 | out: |
74fa4bfa RB |
331 | p_close(fd); |
332 | return result; | |
333 | } | |
334 | ||
f79026b4 | 335 | void git_futils_mmap_free(git_map *out) |
20e7f426 | 336 | { |
f79026b4 | 337 | p_munmap(out); |
20e7f426 SP |
338 | } |
339 | ||
81aaf370 ET |
340 | GIT_INLINE(int) mkdir_validate_dir( |
341 | const char *path, | |
e74340b0 ET |
342 | struct stat *st, |
343 | mode_t mode, | |
344 | uint32_t flags, | |
81aaf370 | 345 | struct git_futils_mkdir_options *opts) |
e74340b0 | 346 | { |
81aaf370 ET |
347 | /* with exclusive create, existing dir is an error */ |
348 | if ((flags & GIT_MKDIR_EXCL) != 0) { | |
ac3d33df | 349 | git_error_set(GIT_ERROR_FILESYSTEM, |
909d5494 | 350 | "failed to make directory '%s': directory exists", path); |
81aaf370 ET |
351 | return GIT_EEXISTS; |
352 | } | |
353 | ||
e74340b0 ET |
354 | if ((S_ISREG(st->st_mode) && (flags & GIT_MKDIR_REMOVE_FILES)) || |
355 | (S_ISLNK(st->st_mode) && (flags & GIT_MKDIR_REMOVE_SYMLINKS))) { | |
81aaf370 | 356 | if (p_unlink(path) < 0) { |
ac3d33df | 357 | git_error_set(GIT_ERROR_OS, "failed to remove %s '%s'", |
81aaf370 | 358 | S_ISLNK(st->st_mode) ? "symlink" : "file", path); |
e74340b0 ET |
359 | return GIT_EEXISTS; |
360 | } | |
361 | ||
81aaf370 | 362 | opts->perfdata.mkdir_calls++; |
e74340b0 | 363 | |
81aaf370 | 364 | if (p_mkdir(path, mode) < 0) { |
ac3d33df | 365 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", path); |
e74340b0 ET |
366 | return GIT_EEXISTS; |
367 | } | |
368 | } | |
369 | ||
370 | else if (S_ISLNK(st->st_mode)) { | |
371 | /* Re-stat the target, make sure it's a directory */ | |
81aaf370 | 372 | opts->perfdata.stat_calls++; |
e74340b0 | 373 | |
81aaf370 | 374 | if (p_stat(path, st) < 0) { |
ac3d33df | 375 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", path); |
e74340b0 ET |
376 | return GIT_EEXISTS; |
377 | } | |
378 | } | |
379 | ||
380 | else if (!S_ISDIR(st->st_mode)) { | |
ac3d33df | 381 | git_error_set(GIT_ERROR_FILESYSTEM, |
909d5494 | 382 | "failed to make directory '%s': directory exists", path); |
e74340b0 ET |
383 | return GIT_EEXISTS; |
384 | } | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
81aaf370 ET |
389 | GIT_INLINE(int) mkdir_validate_mode( |
390 | const char *path, | |
391 | struct stat *st, | |
392 | bool terminal_path, | |
393 | mode_t mode, | |
394 | uint32_t flags, | |
395 | struct git_futils_mkdir_options *opts) | |
396 | { | |
397 | if (((terminal_path && (flags & GIT_MKDIR_CHMOD) != 0) || | |
398 | (flags & GIT_MKDIR_CHMOD_PATH) != 0) && st->st_mode != mode) { | |
399 | ||
400 | opts->perfdata.chmod_calls++; | |
401 | ||
402 | if (p_chmod(path, mode) < 0) { | |
ac3d33df | 403 | git_error_set(GIT_ERROR_OS, "failed to set permissions on '%s'", path); |
81aaf370 ET |
404 | return -1; |
405 | } | |
406 | } | |
407 | ||
408 | return 0; | |
409 | } | |
28cdb315 | 410 | |
e24c60db ET |
411 | GIT_INLINE(int) mkdir_canonicalize( |
412 | git_buf *path, | |
413 | uint32_t flags) | |
1a5204a7 | 414 | { |
e24c60db | 415 | ssize_t root_len; |
ac2fba0e | 416 | |
e24c60db | 417 | if (path->size == 0) { |
ac3d33df | 418 | git_error_set(GIT_ERROR_OS, "attempt to create empty path"); |
ca1b6e54 | 419 | return -1; |
97769280 | 420 | } |
f0b2bfe5 | 421 | |
9cb5b0f7 | 422 | /* Trim trailing slashes (except the root) */ |
e24c60db | 423 | if ((root_len = git_path_root(path->ptr)) < 0) |
9cb5b0f7 ET |
424 | root_len = 0; |
425 | else | |
426 | root_len++; | |
427 | ||
e24c60db ET |
428 | while (path->size > (size_t)root_len && path->ptr[path->size - 1] == '/') |
429 | path->ptr[--path->size] = '\0'; | |
412de9a6 | 430 | |
ca1b6e54 | 431 | /* if we are not supposed to made the last element, truncate it */ |
3c42e4ef | 432 | if ((flags & GIT_MKDIR_SKIP_LAST2) != 0) { |
e24c60db | 433 | git_path_dirname_r(path, path->ptr); |
3c42e4ef RB |
434 | flags |= GIT_MKDIR_SKIP_LAST; |
435 | } | |
9cb5b0f7 | 436 | if ((flags & GIT_MKDIR_SKIP_LAST) != 0) { |
e24c60db | 437 | git_path_dirname_r(path, path->ptr); |
9cb5b0f7 | 438 | } |
ca1b6e54 | 439 | |
9cb5b0f7 | 440 | /* We were either given the root path (or trimmed it to |
e24c60db ET |
441 | * the root), we don't have anything to do. |
442 | */ | |
443 | if (path->size <= (size_t)root_len) | |
444 | git_buf_clear(path); | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | int git_futils_mkdir( | |
450 | const char *path, | |
451 | mode_t mode, | |
452 | uint32_t flags) | |
453 | { | |
454 | git_buf make_path = GIT_BUF_INIT, parent_path = GIT_BUF_INIT; | |
455 | const char *relative; | |
456 | struct git_futils_mkdir_options opts = { 0 }; | |
457 | struct stat st; | |
458 | size_t depth = 0; | |
9ce2e7b3 | 459 | int len = 0, root_len, error; |
e24c60db ET |
460 | |
461 | if ((error = git_buf_puts(&make_path, path)) < 0 || | |
462 | (error = mkdir_canonicalize(&make_path, flags)) < 0 || | |
463 | (error = git_buf_puts(&parent_path, make_path.ptr)) < 0 || | |
464 | make_path.size == 0) | |
465 | goto done; | |
466 | ||
9ce2e7b3 ET |
467 | root_len = git_path_root(make_path.ptr); |
468 | ||
e24c60db ET |
469 | /* find the first parent directory that exists. this will be used |
470 | * as the base to dirname_relative. | |
9cb5b0f7 | 471 | */ |
e24c60db ET |
472 | for (relative = make_path.ptr; parent_path.size; ) { |
473 | error = p_lstat(parent_path.ptr, &st); | |
474 | ||
475 | if (error == 0) { | |
476 | break; | |
477 | } else if (errno != ENOENT) { | |
ac3d33df | 478 | git_error_set(GIT_ERROR_OS, "failed to stat '%s'", parent_path.ptr); |
e24c60db ET |
479 | goto done; |
480 | } | |
481 | ||
482 | depth++; | |
483 | ||
484 | /* examine the parent of the current path */ | |
485 | if ((len = git_path_dirname_r(&parent_path, parent_path.ptr)) < 0) { | |
486 | error = len; | |
487 | goto done; | |
488 | } | |
489 | ||
490 | assert(len); | |
491 | ||
6147f643 PP |
492 | /* |
493 | * We've walked all the given path's parents and it's either relative | |
494 | * (the parent is simply '.') or rooted (the length is less than or | |
495 | * equal to length of the root path). The path may be less than the | |
496 | * root path length on Windows, where `C:` == `C:/`. | |
e24c60db | 497 | */ |
6147f643 | 498 | if ((len == 1 && parent_path.ptr[0] == '.') || len <= root_len) { |
e24c60db ET |
499 | relative = make_path.ptr; |
500 | break; | |
501 | } | |
502 | ||
503 | relative = make_path.ptr + len + 1; | |
504 | ||
505 | /* not recursive? just make this directory relative to its parent. */ | |
506 | if ((flags & GIT_MKDIR_PATH) == 0) | |
507 | break; | |
508 | } | |
509 | ||
510 | /* we found an item at the location we're trying to create, | |
511 | * validate it. | |
512 | */ | |
513 | if (depth == 0) { | |
81aaf370 | 514 | error = mkdir_validate_dir(make_path.ptr, &st, mode, flags, &opts); |
e24c60db | 515 | |
81aaf370 ET |
516 | if (!error) |
517 | error = mkdir_validate_mode( | |
518 | make_path.ptr, &st, true, mode, flags, &opts); | |
e24c60db | 519 | |
f7e56150 RB |
520 | goto done; |
521 | } | |
522 | ||
e24c60db ET |
523 | /* we already took `SKIP_LAST` and `SKIP_LAST2` into account when |
524 | * canonicalizing `make_path`. | |
525 | */ | |
526 | flags &= ~(GIT_MKDIR_SKIP_LAST2 | GIT_MKDIR_SKIP_LAST); | |
527 | ||
528 | error = git_futils_mkdir_relative(relative, | |
529 | parent_path.size ? parent_path.ptr : NULL, mode, flags, &opts); | |
530 | ||
531 | done: | |
ac3d33df JK |
532 | git_buf_dispose(&make_path); |
533 | git_buf_dispose(&parent_path); | |
e24c60db ET |
534 | return error; |
535 | } | |
536 | ||
537 | int git_futils_mkdir_r(const char *path, const mode_t mode) | |
538 | { | |
539 | return git_futils_mkdir(path, mode, GIT_MKDIR_PATH); | |
540 | } | |
541 | ||
542 | int git_futils_mkdir_relative( | |
543 | const char *relative_path, | |
544 | const char *base, | |
545 | mode_t mode, | |
546 | uint32_t flags, | |
547 | struct git_futils_mkdir_options *opts) | |
548 | { | |
549 | git_buf make_path = GIT_BUF_INIT; | |
550 | ssize_t root = 0, min_root_len; | |
551 | char lastch = '/', *tail; | |
552 | struct stat st; | |
553 | struct git_futils_mkdir_options empty_opts = {0}; | |
554 | int error; | |
555 | ||
556 | if (!opts) | |
557 | opts = &empty_opts; | |
558 | ||
559 | /* build path and find "root" where we should start calling mkdir */ | |
560 | if (git_path_join_unrooted(&make_path, relative_path, base, &root) < 0) | |
561 | return -1; | |
562 | ||
563 | if ((error = mkdir_canonicalize(&make_path, flags)) < 0 || | |
564 | make_path.size == 0) | |
565 | goto done; | |
566 | ||
ca1b6e54 RB |
567 | /* if we are not supposed to make the whole path, reset root */ |
568 | if ((flags & GIT_MKDIR_PATH) == 0) | |
569 | root = git_buf_rfind(&make_path, '/'); | |
570 | ||
f7e56150 RB |
571 | /* advance root past drive name or network mount prefix */ |
572 | min_root_len = git_path_root(make_path.ptr); | |
573 | if (root < min_root_len) | |
574 | root = min_root_len; | |
2da72fb2 | 575 | while (root >= 0 && make_path.ptr[root] == '/') |
f7e56150 RB |
576 | ++root; |
577 | ||
ca1b6e54 | 578 | /* clip root to make_path length */ |
f7e56150 RB |
579 | if (root > (ssize_t)make_path.size) |
580 | root = (ssize_t)make_path.size; /* i.e. NUL byte of string */ | |
0e26202c RB |
581 | if (root < 0) |
582 | root = 0; | |
ca1b6e54 | 583 | |
f7e56150 RB |
584 | /* walk down tail of path making each directory */ |
585 | for (tail = &make_path.ptr[root]; *tail; *tail = lastch) { | |
d88e6e9b | 586 | bool mkdir_attempted = false; |
999d4405 | 587 | |
ca1b6e54 RB |
588 | /* advance tail to include next path component */ |
589 | while (*tail == '/') | |
590 | tail++; | |
591 | while (*tail && *tail != '/') | |
592 | tail++; | |
593 | ||
594 | /* truncate path at next component */ | |
595 | lastch = *tail; | |
596 | *tail = '\0'; | |
999d4405 | 597 | st.st_mode = 0; |
ca1b6e54 | 598 | |
500ec543 ET |
599 | if (opts->dir_map && git_strmap_exists(opts->dir_map, make_path.ptr)) |
600 | continue; | |
601 | ||
fe598f09 | 602 | /* See what's going on with this path component */ |
500ec543 | 603 | opts->perfdata.stat_calls++; |
1d50b364 | 604 | |
d88e6e9b | 605 | retry_lstat: |
fe598f09 | 606 | if (p_lstat(make_path.ptr, &st) < 0) { |
d88e6e9b | 607 | if (mkdir_attempted || errno != ENOENT) { |
ac3d33df | 608 | git_error_set(GIT_ERROR_OS, "cannot access component in path '%s'", make_path.ptr); |
d88e6e9b | 609 | error = -1; |
fe598f09 ET |
610 | goto done; |
611 | } | |
612 | ||
ac3d33df | 613 | git_error_clear(); |
d88e6e9b VM |
614 | opts->perfdata.mkdir_calls++; |
615 | mkdir_attempted = true; | |
616 | if (p_mkdir(make_path.ptr, mode) < 0) { | |
617 | if (errno == EEXIST) | |
618 | goto retry_lstat; | |
ac3d33df | 619 | git_error_set(GIT_ERROR_OS, "failed to make directory '%s'", make_path.ptr); |
d88e6e9b VM |
620 | error = -1; |
621 | goto done; | |
622 | } | |
fe598f09 | 623 | } else { |
81aaf370 ET |
624 | if ((error = mkdir_validate_dir( |
625 | make_path.ptr, &st, mode, flags, opts)) < 0) | |
fe598f09 | 626 | goto done; |
d5f25204 | 627 | } |
40c44d2f | 628 | |
999d4405 | 629 | /* chmod if requested and necessary */ |
81aaf370 ET |
630 | if ((error = mkdir_validate_mode( |
631 | make_path.ptr, &st, (lastch == '\0'), mode, flags, opts)) < 0) | |
632 | goto done; | |
500ec543 ET |
633 | |
634 | if (opts->dir_map && opts->pool) { | |
f1453c59 ET |
635 | char *cache_path; |
636 | size_t alloc_size; | |
637 | ||
ac3d33df | 638 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_size, make_path.size, 1); |
f1453c59 ET |
639 | if (!git__is_uint32(alloc_size)) |
640 | return -1; | |
641 | cache_path = git_pool_malloc(opts->pool, (uint32_t)alloc_size); | |
ac3d33df | 642 | GIT_ERROR_CHECK_ALLOC(cache_path); |
500ec543 ET |
643 | |
644 | memcpy(cache_path, make_path.ptr, make_path.size + 1); | |
645 | ||
73028af8 | 646 | git_strmap_insert(opts->dir_map, cache_path, cache_path, &error); |
500ec543 ET |
647 | if (error < 0) |
648 | goto done; | |
649 | } | |
a993e4fe | 650 | } |
40c44d2f | 651 | |
999d4405 RB |
652 | error = 0; |
653 | ||
654 | /* check that full path really is a directory if requested & needed */ | |
f7e56150 | 655 | if ((flags & GIT_MKDIR_VERIFY_DIR) != 0 && |
1d50b364 | 656 | lastch != '\0') { |
500ec543 | 657 | opts->perfdata.stat_calls++; |
1d50b364 ET |
658 | |
659 | if (p_stat(make_path.ptr, &st) < 0 || !S_ISDIR(st.st_mode)) { | |
ac3d33df | 660 | git_error_set(GIT_ERROR_OS, "path is not a directory '%s'", |
e74340b0 | 661 | make_path.ptr); |
1d50b364 ET |
662 | error = GIT_ENOTFOUND; |
663 | } | |
999d4405 | 664 | } |
77c3999c | 665 | |
999d4405 | 666 | done: |
ac3d33df | 667 | git_buf_dispose(&make_path); |
331e7de9 | 668 | return error; |
ca1b6e54 | 669 | } |
77c3999c | 670 | |
331e7de9 | 671 | typedef struct { |
ad9a921b | 672 | const char *base; |
7e5c8a5b | 673 | size_t baselen; |
331e7de9 | 674 | uint32_t flags; |
219d3457 | 675 | int depth; |
331e7de9 RB |
676 | } futils__rmdir_data; |
677 | ||
219d3457 RB |
678 | #define FUTILS_MAX_DEPTH 100 |
679 | ||
331e7de9 | 680 | static int futils__error_cannot_rmdir(const char *path, const char *filemsg) |
42b3a460 | 681 | { |
331e7de9 | 682 | if (filemsg) |
ac3d33df | 683 | git_error_set(GIT_ERROR_OS, "could not remove directory '%s': %s", |
331e7de9 RB |
684 | path, filemsg); |
685 | else | |
ac3d33df | 686 | git_error_set(GIT_ERROR_OS, "could not remove directory '%s'", path); |
555aa453 | 687 | |
331e7de9 RB |
688 | return -1; |
689 | } | |
deafee7b | 690 | |
ad9a921b RB |
691 | static int futils__rm_first_parent(git_buf *path, const char *ceiling) |
692 | { | |
693 | int error = GIT_ENOTFOUND; | |
694 | struct stat st; | |
695 | ||
696 | while (error == GIT_ENOTFOUND) { | |
697 | git_buf_rtruncate_at_char(path, '/'); | |
698 | ||
699 | if (!path->size || git__prefixcmp(path->ptr, ceiling) != 0) | |
700 | error = 0; | |
cccacac5 | 701 | else if (p_lstat_posixly(path->ptr, &st) == 0) { |
ad9a921b RB |
702 | if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) |
703 | error = p_unlink(path->ptr); | |
704 | else if (!S_ISDIR(st.st_mode)) | |
705 | error = -1; /* fail to remove non-regular file */ | |
706 | } else if (errno != ENOTDIR) | |
707 | error = -1; | |
708 | } | |
709 | ||
710 | if (error) | |
711 | futils__error_cannot_rmdir(path->ptr, "cannot remove parent"); | |
712 | ||
713 | return error; | |
714 | } | |
715 | ||
331e7de9 RB |
716 | static int futils__rmdir_recurs_foreach(void *opaque, git_buf *path) |
717 | { | |
96869a4e | 718 | int error = 0; |
331e7de9 | 719 | futils__rmdir_data *data = opaque; |
14997dc5 | 720 | struct stat st; |
555aa453 | 721 | |
14997dc5 RB |
722 | if (data->depth > FUTILS_MAX_DEPTH) |
723 | error = futils__error_cannot_rmdir( | |
724 | path->ptr, "directory nesting too deep"); | |
219d3457 | 725 | |
14997dc5 | 726 | else if ((error = p_lstat_posixly(path->ptr, &st)) < 0) { |
ad9a921b | 727 | if (errno == ENOENT) |
14997dc5 | 728 | error = 0; |
ad9a921b RB |
729 | else if (errno == ENOTDIR) { |
730 | /* asked to remove a/b/c/d/e and a/b is a normal file */ | |
731 | if ((data->flags & GIT_RMDIR_REMOVE_BLOCKERS) != 0) | |
14997dc5 | 732 | error = futils__rm_first_parent(path, data->base); |
ad9a921b RB |
733 | else |
734 | futils__error_cannot_rmdir( | |
735 | path->ptr, "parent is not directory"); | |
736 | } | |
737 | else | |
14997dc5 | 738 | error = git_path_set_error(errno, path->ptr, "rmdir"); |
ad9a921b RB |
739 | } |
740 | ||
741 | else if (S_ISDIR(st.st_mode)) { | |
219d3457 RB |
742 | data->depth++; |
743 | ||
14997dc5 | 744 | error = git_path_direach(path, 0, futils__rmdir_recurs_foreach, data); |
219d3457 RB |
745 | |
746 | data->depth--; | |
747 | ||
96869a4e | 748 | if (error < 0) |
25e0b157 | 749 | return error; |
96869a4e | 750 | |
219d3457 | 751 | if (data->depth == 0 && (data->flags & GIT_RMDIR_SKIP_ROOT) != 0) |
25e0b157 | 752 | return error; |
331e7de9 | 753 | |
14997dc5 | 754 | if ((error = p_rmdir(path->ptr)) < 0) { |
331e7de9 | 755 | if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) != 0 && |
e09d18ee | 756 | (errno == ENOTEMPTY || errno == EEXIST || errno == EBUSY)) |
14997dc5 | 757 | error = 0; |
331e7de9 | 758 | else |
14997dc5 | 759 | error = git_path_set_error(errno, path->ptr, "rmdir"); |
deafee7b | 760 | } |
858dba58 VM |
761 | } |
762 | ||
331e7de9 | 763 | else if ((data->flags & GIT_RMDIR_REMOVE_FILES) != 0) { |
14997dc5 RB |
764 | if (p_unlink(path->ptr) < 0) |
765 | error = git_path_set_error(errno, path->ptr, "remove"); | |
deafee7b RB |
766 | } |
767 | ||
ad9a921b | 768 | else if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) == 0) |
14997dc5 | 769 | error = futils__error_cannot_rmdir(path->ptr, "still present"); |
555aa453 | 770 | |
25e0b157 | 771 | return error; |
331e7de9 RB |
772 | } |
773 | ||
bbb988a5 | 774 | static int futils__rmdir_empty_parent(void *opaque, const char *path) |
331e7de9 | 775 | { |
7e5c8a5b | 776 | futils__rmdir_data *data = opaque; |
96869a4e | 777 | int error = 0; |
7e5c8a5b | 778 | |
bbb988a5 | 779 | if (strlen(path) <= data->baselen) |
25e0b157 | 780 | error = GIT_ITEROVER; |
331e7de9 | 781 | |
bbb988a5 | 782 | else if (p_rmdir(path) < 0) { |
331e7de9 RB |
783 | int en = errno; |
784 | ||
785 | if (en == ENOENT || en == ENOTDIR) { | |
96869a4e | 786 | /* do nothing */ |
4a0df574 ET |
787 | } else if ((data->flags & GIT_RMDIR_SKIP_NONEMPTY) == 0 && |
788 | en == EBUSY) { | |
789 | error = git_path_set_error(errno, path, "rmdir"); | |
e09d18ee | 790 | } else if (en == ENOTEMPTY || en == EEXIST || en == EBUSY) { |
331e7de9 RB |
791 | error = GIT_ITEROVER; |
792 | } else { | |
bbb988a5 | 793 | error = git_path_set_error(errno, path, "rmdir"); |
331e7de9 RB |
794 | } |
795 | } | |
796 | ||
25e0b157 | 797 | return error; |
42b3a460 MS |
798 | } |
799 | ||
0d64bef9 | 800 | int git_futils_rmdir_r( |
331e7de9 | 801 | const char *path, const char *base, uint32_t flags) |
42b3a460 | 802 | { |
97769280 | 803 | int error; |
0d64bef9 | 804 | git_buf fullpath = GIT_BUF_INIT; |
96869a4e | 805 | futils__rmdir_data data; |
0d64bef9 RB |
806 | |
807 | /* build path and find "root" where we should start calling mkdir */ | |
808 | if (git_path_join_unrooted(&fullpath, path, base, NULL) < 0) | |
809 | return -1; | |
810 | ||
96869a4e | 811 | memset(&data, 0, sizeof(data)); |
7e5c8a5b RB |
812 | data.base = base ? base : ""; |
813 | data.baselen = base ? strlen(base) : 0; | |
814 | data.flags = flags; | |
331e7de9 RB |
815 | |
816 | error = futils__rmdir_recurs_foreach(&data, &fullpath); | |
817 | ||
818 | /* remove now-empty parents if requested */ | |
96869a4e | 819 | if (!error && (flags & GIT_RMDIR_EMPTY_PARENTS) != 0) |
331e7de9 RB |
820 | error = git_path_walk_up( |
821 | &fullpath, base, futils__rmdir_empty_parent, &data); | |
822 | ||
25e0b157 | 823 | if (error == GIT_ITEROVER) { |
ac3d33df | 824 | git_error_clear(); |
96869a4e | 825 | error = 0; |
25e0b157 | 826 | } |
0d64bef9 | 827 | |
ac3d33df | 828 | git_buf_dispose(&fullpath); |
97769280 | 829 | |
97769280 | 830 | return error; |
42b3a460 MS |
831 | } |
832 | ||
8651c10f BS |
833 | int git_futils_fake_symlink(const char *old, const char *new) |
834 | { | |
835 | int retcode = GIT_ERROR; | |
836 | int fd = git_futils_creat_withpath(new, 0755, 0644); | |
837 | if (fd >= 0) { | |
838 | retcode = p_write(fd, old, strlen(old)); | |
839 | p_close(fd); | |
840 | } | |
841 | return retcode; | |
842 | } | |
ca1b6e54 | 843 | |
85bd1746 | 844 | static int cp_by_fd(int ifd, int ofd, bool close_fd_when_done) |
ca1b6e54 RB |
845 | { |
846 | int error = 0; | |
7dd22538 | 847 | char buffer[FILEIO_BUFSIZE]; |
ca1b6e54 RB |
848 | ssize_t len = 0; |
849 | ||
850 | while (!error && (len = p_read(ifd, buffer, sizeof(buffer))) > 0) | |
851 | /* p_write() does not have the same semantics as write(). It loops | |
852 | * internally and will return 0 when it has completed writing. | |
853 | */ | |
854 | error = p_write(ofd, buffer, len); | |
855 | ||
856 | if (len < 0) { | |
ac3d33df | 857 | git_error_set(GIT_ERROR_OS, "read error while copying file"); |
ca1b6e54 RB |
858 | error = (int)len; |
859 | } | |
860 | ||
edef91ee | 861 | if (error < 0) |
ac3d33df | 862 | git_error_set(GIT_ERROR_OS, "write error while copying file"); |
edef91ee | 863 | |
85bd1746 | 864 | if (close_fd_when_done) { |
ca1b6e54 RB |
865 | p_close(ifd); |
866 | p_close(ofd); | |
867 | } | |
868 | ||
869 | return error; | |
870 | } | |
871 | ||
85bd1746 | 872 | int git_futils_cp(const char *from, const char *to, mode_t filemode) |
ca1b6e54 RB |
873 | { |
874 | int ifd, ofd; | |
875 | ||
ca1b6e54 RB |
876 | if ((ifd = git_futils_open_ro(from)) < 0) |
877 | return ifd; | |
878 | ||
879 | if ((ofd = p_open(to, O_WRONLY | O_CREAT | O_EXCL, filemode)) < 0) { | |
ca1b6e54 | 880 | p_close(ifd); |
14997dc5 | 881 | return git_path_set_error(errno, to, "open for writing"); |
ca1b6e54 RB |
882 | } |
883 | ||
85bd1746 | 884 | return cp_by_fd(ifd, ofd, true); |
ca1b6e54 RB |
885 | } |
886 | ||
27051d4e | 887 | int git_futils_touch(const char *path, time_t *when) |
8f09a98e ET |
888 | { |
889 | struct p_timeval times[2]; | |
8f09a98e ET |
890 | int ret; |
891 | ||
27051d4e ET |
892 | times[0].tv_sec = times[1].tv_sec = when ? *when : time(NULL); |
893 | times[0].tv_usec = times[1].tv_usec = 0; | |
8f09a98e ET |
894 | |
895 | ret = p_utimes(path, times); | |
896 | ||
897 | return (ret < 0) ? git_path_set_error(errno, path, "touch") : 0; | |
898 | } | |
899 | ||
85bd1746 | 900 | static int cp_link(const char *from, const char *to, size_t link_size) |
ca1b6e54 RB |
901 | { |
902 | int error = 0; | |
903 | ssize_t read_len; | |
392702ee | 904 | char *link_data; |
f1453c59 | 905 | size_t alloc_size; |
392702ee | 906 | |
ac3d33df | 907 | GIT_ERROR_CHECK_ALLOC_ADD(&alloc_size, link_size, 1); |
f1453c59 | 908 | link_data = git__malloc(alloc_size); |
ac3d33df | 909 | GIT_ERROR_CHECK_ALLOC(link_data); |
ca1b6e54 | 910 | |
85bd1746 RB |
911 | read_len = p_readlink(from, link_data, link_size); |
912 | if (read_len != (ssize_t)link_size) { | |
ac3d33df | 913 | git_error_set(GIT_ERROR_OS, "failed to read symlink data for '%s'", from); |
ca1b6e54 RB |
914 | error = -1; |
915 | } | |
916 | else { | |
917 | link_data[read_len] = '\0'; | |
918 | ||
919 | if (p_symlink(link_data, to) < 0) { | |
ac3d33df | 920 | git_error_set(GIT_ERROR_OS, "could not symlink '%s' as '%s'", |
ca1b6e54 RB |
921 | link_data, to); |
922 | error = -1; | |
923 | } | |
924 | } | |
925 | ||
926 | git__free(link_data); | |
927 | return error; | |
928 | } | |
929 | ||
930 | typedef struct { | |
931 | const char *to_root; | |
932 | git_buf to; | |
933 | ssize_t from_prefix; | |
934 | uint32_t flags; | |
935 | uint32_t mkdir_flags; | |
936 | mode_t dirmode; | |
937 | } cp_r_info; | |
938 | ||
3c42e4ef RB |
939 | #define GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT (1u << 10) |
940 | ||
941 | static int _cp_r_mkdir(cp_r_info *info, git_buf *from) | |
942 | { | |
943 | int error = 0; | |
944 | ||
945 | /* create root directory the first time we need to create a directory */ | |
946 | if ((info->flags & GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT) == 0) { | |
947 | error = git_futils_mkdir( | |
ac2fba0e | 948 | info->to_root, info->dirmode, |
18f08264 | 949 | (info->flags & GIT_CPDIR_CHMOD_DIRS) ? GIT_MKDIR_CHMOD : 0); |
3c42e4ef RB |
950 | |
951 | info->flags |= GIT_CPDIR__MKDIR_DONE_FOR_TO_ROOT; | |
952 | } | |
953 | ||
954 | /* create directory with root as base to prevent excess chmods */ | |
955 | if (!error) | |
ac2fba0e | 956 | error = git_futils_mkdir_relative( |
3c42e4ef | 957 | from->ptr + info->from_prefix, info->to_root, |
ac2fba0e | 958 | info->dirmode, info->mkdir_flags, NULL); |
3c42e4ef RB |
959 | |
960 | return error; | |
961 | } | |
962 | ||
ca1b6e54 RB |
963 | static int _cp_r_callback(void *ref, git_buf *from) |
964 | { | |
3c42e4ef | 965 | int error = 0; |
ca1b6e54 RB |
966 | cp_r_info *info = ref; |
967 | struct stat from_st, to_st; | |
968 | bool exists = false; | |
969 | ||
970 | if ((info->flags & GIT_CPDIR_COPY_DOTFILES) == 0 && | |
971 | from->ptr[git_path_basename_offset(from)] == '.') | |
972 | return 0; | |
973 | ||
96869a4e RB |
974 | if ((error = git_buf_joinpath( |
975 | &info->to, info->to_root, from->ptr + info->from_prefix)) < 0) | |
25e0b157 | 976 | return error; |
ca1b6e54 | 977 | |
14997dc5 | 978 | if (!(error = git_path_lstat(info->to.ptr, &to_st))) |
ca1b6e54 | 979 | exists = true; |
14997dc5 | 980 | else if (error != GIT_ENOTFOUND) |
25e0b157 | 981 | return error; |
14997dc5 | 982 | else { |
ac3d33df | 983 | git_error_clear(); |
14997dc5 RB |
984 | error = 0; |
985 | } | |
ca1b6e54 | 986 | |
3c42e4ef | 987 | if ((error = git_path_lstat(from->ptr, &from_st)) < 0) |
25e0b157 | 988 | return error; |
ca1b6e54 RB |
989 | |
990 | if (S_ISDIR(from_st.st_mode)) { | |
ca1b6e54 RB |
991 | mode_t oldmode = info->dirmode; |
992 | ||
993 | /* if we are not chmod'ing, then overwrite dirmode */ | |
18f08264 | 994 | if ((info->flags & GIT_CPDIR_CHMOD_DIRS) == 0) |
ca1b6e54 RB |
995 | info->dirmode = from_st.st_mode; |
996 | ||
997 | /* make directory now if CREATE_EMPTY_DIRS is requested and needed */ | |
998 | if (!exists && (info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) != 0) | |
3c42e4ef | 999 | error = _cp_r_mkdir(info, from); |
ca1b6e54 RB |
1000 | |
1001 | /* recurse onto target directory */ | |
25e0b157 | 1002 | if (!error && (!exists || S_ISDIR(to_st.st_mode))) |
219d3457 | 1003 | error = git_path_direach(from, 0, _cp_r_callback, info); |
ca1b6e54 RB |
1004 | |
1005 | if (oldmode != 0) | |
1006 | info->dirmode = oldmode; | |
1007 | ||
25e0b157 | 1008 | return error; |
ca1b6e54 RB |
1009 | } |
1010 | ||
1011 | if (exists) { | |
1012 | if ((info->flags & GIT_CPDIR_OVERWRITE) == 0) | |
1013 | return 0; | |
1014 | ||
1015 | if (p_unlink(info->to.ptr) < 0) { | |
ac3d33df | 1016 | git_error_set(GIT_ERROR_OS, "cannot overwrite existing file '%s'", |
ca1b6e54 | 1017 | info->to.ptr); |
25e0b157 | 1018 | return GIT_EEXISTS; |
ca1b6e54 RB |
1019 | } |
1020 | } | |
1021 | ||
1022 | /* Done if this isn't a regular file or a symlink */ | |
1023 | if (!S_ISREG(from_st.st_mode) && | |
1024 | (!S_ISLNK(from_st.st_mode) || | |
1025 | (info->flags & GIT_CPDIR_COPY_SYMLINKS) == 0)) | |
1026 | return 0; | |
1027 | ||
1028 | /* Make container directory on demand if needed */ | |
1029 | if ((info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0 && | |
3c42e4ef | 1030 | (error = _cp_r_mkdir(info, from)) < 0) |
25e0b157 | 1031 | return error; |
ca1b6e54 RB |
1032 | |
1033 | /* make symlink or regular file */ | |
94f742ba | 1034 | if (info->flags & GIT_CPDIR_LINK_FILES) { |
54738368 | 1035 | if ((error = p_link(from->ptr, info->to.ptr)) < 0) |
ac3d33df | 1036 | git_error_set(GIT_ERROR_OS, "failed to link '%s'", from->ptr); |
94f742ba | 1037 | } else if (S_ISLNK(from_st.st_mode)) { |
3c42e4ef | 1038 | error = cp_link(from->ptr, info->to.ptr, (size_t)from_st.st_size); |
94f742ba | 1039 | } else { |
3c42e4ef RB |
1040 | mode_t usemode = from_st.st_mode; |
1041 | ||
18f08264 | 1042 | if ((info->flags & GIT_CPDIR_SIMPLE_TO_MODE) != 0) |
f240acce | 1043 | usemode = GIT_PERMS_FOR_WRITE(usemode); |
3c42e4ef RB |
1044 | |
1045 | error = git_futils_cp(from->ptr, info->to.ptr, usemode); | |
3c42e4ef RB |
1046 | } |
1047 | ||
25e0b157 | 1048 | return error; |
ca1b6e54 RB |
1049 | } |
1050 | ||
1051 | int git_futils_cp_r( | |
1052 | const char *from, | |
1053 | const char *to, | |
1054 | uint32_t flags, | |
1055 | mode_t dirmode) | |
1056 | { | |
1057 | int error; | |
1058 | git_buf path = GIT_BUF_INIT; | |
1059 | cp_r_info info; | |
1060 | ||
3c42e4ef | 1061 | if (git_buf_joinpath(&path, from, "") < 0) /* ensure trailing slash */ |
ca1b6e54 RB |
1062 | return -1; |
1063 | ||
96869a4e | 1064 | memset(&info, 0, sizeof(info)); |
ca1b6e54 RB |
1065 | info.to_root = to; |
1066 | info.flags = flags; | |
1067 | info.dirmode = dirmode; | |
1068 | info.from_prefix = path.size; | |
1069 | git_buf_init(&info.to, 0); | |
1070 | ||
1071 | /* precalculate mkdir flags */ | |
1072 | if ((flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0) { | |
3c42e4ef RB |
1073 | /* if not creating empty dirs, then use mkdir to create the path on |
1074 | * demand right before files are copied. | |
1075 | */ | |
ca1b6e54 | 1076 | info.mkdir_flags = GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST; |
18f08264 | 1077 | if ((flags & GIT_CPDIR_CHMOD_DIRS) != 0) |
ca1b6e54 RB |
1078 | info.mkdir_flags |= GIT_MKDIR_CHMOD_PATH; |
1079 | } else { | |
3c42e4ef | 1080 | /* otherwise, we will do simple mkdir as directories are encountered */ |
ca1b6e54 | 1081 | info.mkdir_flags = |
18f08264 | 1082 | ((flags & GIT_CPDIR_CHMOD_DIRS) != 0) ? GIT_MKDIR_CHMOD : 0; |
ca1b6e54 RB |
1083 | } |
1084 | ||
1085 | error = _cp_r_callback(&info, &path); | |
1086 | ||
ac3d33df JK |
1087 | git_buf_dispose(&path); |
1088 | git_buf_dispose(&info.to); | |
ca1b6e54 RB |
1089 | |
1090 | return error; | |
1091 | } | |
744cc03e | 1092 | |
c1f61af6 VM |
1093 | int git_futils_filestamp_check( |
1094 | git_futils_filestamp *stamp, const char *path) | |
744cc03e RB |
1095 | { |
1096 | struct stat st; | |
1097 | ||
c8b511f3 RB |
1098 | /* if the stamp is NULL, then always reload */ |
1099 | if (stamp == NULL) | |
744cc03e RB |
1100 | return 1; |
1101 | ||
7d490872 | 1102 | if (p_stat(path, &st) < 0) |
744cc03e RB |
1103 | return GIT_ENOTFOUND; |
1104 | ||
3d6a42d1 | 1105 | if (stamp->mtime.tv_sec == st.st_mtime && |
0226f7dd | 1106 | #if defined(GIT_USE_NSEC) |
3d6a42d1 | 1107 | stamp->mtime.tv_nsec == st.st_mtime_nsec && |
0226f7dd | 1108 | #endif |
c8b511f3 RB |
1109 | stamp->size == (git_off_t)st.st_size && |
1110 | stamp->ino == (unsigned int)st.st_ino) | |
744cc03e RB |
1111 | return 0; |
1112 | ||
3d6a42d1 | 1113 | stamp->mtime.tv_sec = st.st_mtime; |
0226f7dd | 1114 | #if defined(GIT_USE_NSEC) |
3d6a42d1 | 1115 | stamp->mtime.tv_nsec = st.st_mtime_nsec; |
0226f7dd | 1116 | #endif |
c8b511f3 RB |
1117 | stamp->size = (git_off_t)st.st_size; |
1118 | stamp->ino = (unsigned int)st.st_ino; | |
744cc03e RB |
1119 | |
1120 | return 1; | |
1121 | } | |
1122 | ||
c1f61af6 VM |
1123 | void git_futils_filestamp_set( |
1124 | git_futils_filestamp *target, const git_futils_filestamp *source) | |
c8b511f3 RB |
1125 | { |
1126 | assert(target); | |
1127 | ||
1128 | if (source) | |
1129 | memcpy(target, source, sizeof(*target)); | |
1130 | else | |
1131 | memset(target, 0, sizeof(*target)); | |
1132 | } | |
823c0e9c RB |
1133 | |
1134 | ||
1135 | void git_futils_filestamp_set_from_stat( | |
1136 | git_futils_filestamp *stamp, struct stat *st) | |
1137 | { | |
1138 | if (st) { | |
3d6a42d1 ET |
1139 | stamp->mtime.tv_sec = st->st_mtime; |
1140 | #if defined(GIT_USE_NSEC) | |
1141 | stamp->mtime.tv_nsec = st->st_mtime_nsec; | |
1142 | #else | |
973a09a4 AR |
1143 | stamp->mtime.tv_nsec = 0; |
1144 | #endif | |
823c0e9c RB |
1145 | stamp->size = (git_off_t)st->st_size; |
1146 | stamp->ino = (unsigned int)st->st_ino; | |
1147 | } else { | |
1148 | memset(stamp, 0, sizeof(*stamp)); | |
1149 | } | |
1150 | } | |
1229e1c4 ET |
1151 | |
1152 | int git_futils_fsync_dir(const char *path) | |
1153 | { | |
3ac05d11 ET |
1154 | #ifdef GIT_WIN32 |
1155 | GIT_UNUSED(path); | |
1156 | return 0; | |
1157 | #else | |
1229e1c4 ET |
1158 | int fd, error = -1; |
1159 | ||
1160 | if ((fd = p_open(path, O_RDONLY)) < 0) { | |
ac3d33df | 1161 | git_error_set(GIT_ERROR_OS, "failed to open directory '%s' for fsync", path); |
1229e1c4 ET |
1162 | return -1; |
1163 | } | |
1164 | ||
1165 | if ((error = p_fsync(fd)) < 0) | |
ac3d33df | 1166 | git_error_set(GIT_ERROR_OS, "failed to fsync directory '%s'", path); |
1229e1c4 ET |
1167 | |
1168 | p_close(fd); | |
1169 | return error; | |
3ac05d11 | 1170 | #endif |
1229e1c4 ET |
1171 | } |
1172 | ||
1173 | int git_futils_fsync_parent(const char *path) | |
1174 | { | |
0c28c72d PS |
1175 | char *parent; |
1176 | int error; | |
1177 | ||
1178 | if ((parent = git_path_dirname(path)) == NULL) | |
1179 | return -1; | |
1229e1c4 | 1180 | |
0c28c72d | 1181 | error = git_futils_fsync_dir(parent); |
1229e1c4 ET |
1182 | git__free(parent); |
1183 | return error; | |
1184 | } |