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Commit | Line | Data |
---|---|---|
bb742ede | 1 | /* |
5e0de328 | 2 | * Copyright (C) 2009-2012 the libgit2 contributors |
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 | */ | |
5ee2fe77 | 7 | #include "common.h" |
ec250c6e | 8 | #include "fileops.h" |
2e29957a | 9 | #include <ctype.h> |
ec250c6e | 10 | |
ce8cd006 | 11 | int git_futils_mkpath2file(const char *file_path, const mode_t mode) |
55ffebe3 | 12 | { |
ca1b6e54 RB |
13 | return git_futils_mkdir( |
14 | file_path, NULL, mode, GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST); | |
55ffebe3 VM |
15 | } |
16 | ||
97769280 | 17 | int git_futils_mktmp(git_buf *path_out, const char *filename) |
72a3fe42 VM |
18 | { |
19 | int fd; | |
20 | ||
97769280 RB |
21 | git_buf_sets(path_out, filename); |
22 | git_buf_puts(path_out, "_git2_XXXXXX"); | |
23 | ||
24 | if (git_buf_oom(path_out)) | |
1a481123 | 25 | return -1; |
72a3fe42 | 26 | |
1a481123 VM |
27 | if ((fd = p_mkstemp(path_out->ptr)) < 0) { |
28 | giterr_set(GITERR_OS, | |
ae9e29fd | 29 | "Failed to create temporary file '%s'", path_out->ptr); |
1a481123 VM |
30 | return -1; |
31 | } | |
72a3fe42 | 32 | |
f978b748 | 33 | return fd; |
72a3fe42 VM |
34 | } |
35 | ||
ce8cd006 | 36 | int git_futils_creat_withpath(const char *path, const mode_t dirmode, const mode_t mode) |
7dd8a9f7 | 37 | { |
1a481123 | 38 | int fd; |
55ffebe3 | 39 | |
1a481123 VM |
40 | if (git_futils_mkpath2file(path, dirmode) < 0) |
41 | return -1; | |
42 | ||
43 | fd = p_creat(path, mode); | |
44 | if (fd < 0) { | |
ae9e29fd | 45 | giterr_set(GITERR_OS, "Failed to create file '%s'", path); |
1a481123 VM |
46 | return -1; |
47 | } | |
48 | ||
49 | return fd; | |
55ffebe3 VM |
50 | } |
51 | ||
33127043 | 52 | int git_futils_creat_locked(const char *path, const mode_t mode) |
1549cba9 | 53 | { |
09719c50 | 54 | int fd; |
55 | ||
56 | #ifdef GIT_WIN32 | |
6813169a | 57 | wchar_t buf[GIT_WIN_PATH]; |
09719c50 | 58 | |
0f4c6175 | 59 | git__utf8_to_16(buf, GIT_WIN_PATH, path); |
09719c50 | 60 | fd = _wopen(buf, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_EXCL, mode); |
09719c50 | 61 | #else |
62 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_EXCL, mode); | |
63 | #endif | |
64 | ||
1a481123 | 65 | if (fd < 0) { |
ae9e29fd | 66 | giterr_set(GITERR_OS, "Failed to create locked file '%s'", path); |
1a481123 VM |
67 | return -1; |
68 | } | |
69 | ||
70 | return fd; | |
1549cba9 RG |
71 | } |
72 | ||
ce8cd006 | 73 | int git_futils_creat_locked_withpath(const char *path, const mode_t dirmode, const mode_t mode) |
1549cba9 | 74 | { |
1a481123 VM |
75 | if (git_futils_mkpath2file(path, dirmode) < 0) |
76 | return -1; | |
1549cba9 | 77 | |
f79026b4 | 78 | return git_futils_creat_locked(path, mode); |
ec250c6e AE |
79 | } |
80 | ||
deafee7b RB |
81 | int git_futils_open_ro(const char *path) |
82 | { | |
83 | int fd = p_open(path, O_RDONLY); | |
84 | if (fd < 0) { | |
d0a920a6 | 85 | if (errno == ENOENT || errno == ENOTDIR) |
deafee7b RB |
86 | fd = GIT_ENOTFOUND; |
87 | giterr_set(GITERR_OS, "Failed to open '%s'", path); | |
88 | } | |
89 | return fd; | |
90 | } | |
91 | ||
f79026b4 | 92 | git_off_t git_futils_filesize(git_file fd) |
ec250c6e | 93 | { |
7dd8a9f7 | 94 | struct stat sb; |
deafee7b RB |
95 | |
96 | if (p_fstat(fd, &sb)) { | |
97 | giterr_set(GITERR_OS, "Failed to stat file descriptor"); | |
98 | return -1; | |
99 | } | |
5ad739e8 | 100 | |
ec250c6e AE |
101 | return sb.st_size; |
102 | } | |
4188d28f | 103 | |
b6c93aef RB |
104 | mode_t git_futils_canonical_mode(mode_t raw_mode) |
105 | { | |
106 | if (S_ISREG(raw_mode)) | |
107 | return S_IFREG | GIT_CANONICAL_PERMS(raw_mode); | |
108 | else if (S_ISLNK(raw_mode)) | |
109 | return S_IFLNK; | |
b6c93aef RB |
110 | else if (S_ISGITLINK(raw_mode)) |
111 | return S_IFGITLINK; | |
7c7ff7d1 RB |
112 | else if (S_ISDIR(raw_mode)) |
113 | return S_IFDIR; | |
b6c93aef RB |
114 | else |
115 | return 0; | |
116 | } | |
117 | ||
60b9d3fc RB |
118 | int git_futils_readbuffer_fd(git_buf *buf, git_file fd, size_t len) |
119 | { | |
1f35e89d | 120 | ssize_t read_size; |
60b9d3fc RB |
121 | |
122 | git_buf_clear(buf); | |
123 | ||
124 | if (git_buf_grow(buf, len + 1) < 0) | |
125 | return -1; | |
126 | ||
1f35e89d RB |
127 | /* p_read loops internally to read len bytes */ |
128 | read_size = p_read(fd, buf->ptr, len); | |
60b9d3fc | 129 | |
c859184b | 130 | if (read_size != (ssize_t)len) { |
1f35e89d RB |
131 | giterr_set(GITERR_OS, "Failed to read descriptor"); |
132 | return -1; | |
60b9d3fc RB |
133 | } |
134 | ||
1f35e89d RB |
135 | buf->ptr[read_size] = '\0'; |
136 | buf->size = read_size; | |
137 | ||
60b9d3fc RB |
138 | return 0; |
139 | } | |
140 | ||
141 | int git_futils_readbuffer_updated( | |
142 | git_buf *buf, const char *path, time_t *mtime, int *updated) | |
75d58430 RJ |
143 | { |
144 | git_file fd; | |
c3da9f06 | 145 | struct stat st; |
75d58430 | 146 | |
13224ea4 | 147 | assert(buf && path && *path); |
75d58430 | 148 | |
c3da9f06 CMN |
149 | if (updated != NULL) |
150 | *updated = 0; | |
75d58430 | 151 | |
ae9e29fd RB |
152 | if ((fd = git_futils_open_ro(path)) < 0) |
153 | return fd; | |
c3da9f06 | 154 | |
13224ea4 | 155 | if (p_fstat(fd, &st) < 0 || S_ISDIR(st.st_mode) || !git__is_sizet(st.st_size+1)) { |
e1de726c | 156 | p_close(fd); |
1a481123 VM |
157 | giterr_set(GITERR_OS, "Invalid regular file stat for '%s'", path); |
158 | return -1; | |
13224ea4 | 159 | } |
c3da9f06 CMN |
160 | |
161 | /* | |
162 | * If we were given a time, we only want to read the file if it | |
163 | * has been modified. | |
164 | */ | |
13224ea4 | 165 | if (mtime != NULL && *mtime >= st.st_mtime) { |
e1de726c | 166 | p_close(fd); |
13224ea4 VM |
167 | return 0; |
168 | } | |
c3da9f06 CMN |
169 | |
170 | if (mtime != NULL) | |
171 | *mtime = st.st_mtime; | |
c3da9f06 | 172 | |
60b9d3fc | 173 | if (git_futils_readbuffer_fd(buf, fd, (size_t)st.st_size) < 0) { |
e1de726c RB |
174 | p_close(fd); |
175 | return -1; | |
75d58430 RJ |
176 | } |
177 | ||
f79026b4 | 178 | p_close(fd); |
75d58430 | 179 | |
c3da9f06 CMN |
180 | if (updated != NULL) |
181 | *updated = 1; | |
182 | ||
13224ea4 | 183 | return 0; |
c3da9f06 CMN |
184 | } |
185 | ||
13224ea4 | 186 | int git_futils_readbuffer(git_buf *buf, const char *path) |
97769280 | 187 | { |
13224ea4 | 188 | return git_futils_readbuffer_updated(buf, path, NULL, NULL); |
97769280 RB |
189 | } |
190 | ||
ce8cd006 | 191 | int git_futils_mv_withpath(const char *from, const char *to, const mode_t dirmode) |
19a30a3f | 192 | { |
deafee7b RB |
193 | if (git_futils_mkpath2file(to, dirmode) < 0) |
194 | return -1; | |
19a30a3f | 195 | |
deafee7b RB |
196 | if (p_rename(from, to) < 0) { |
197 | giterr_set(GITERR_OS, "Failed to rename '%s' to '%s'", from, to); | |
198 | return -1; | |
199 | } | |
200 | ||
201 | return 0; | |
19a30a3f VM |
202 | } |
203 | ||
f79026b4 | 204 | int git_futils_mmap_ro(git_map *out, git_file fd, git_off_t begin, size_t len) |
20e7f426 | 205 | { |
f79026b4 | 206 | return p_mmap(out, len, GIT_PROT_READ, GIT_MAP_SHARED, fd, begin); |
20e7f426 SP |
207 | } |
208 | ||
74fa4bfa RB |
209 | int git_futils_mmap_ro_file(git_map *out, const char *path) |
210 | { | |
0d0fa7c3 RB |
211 | git_file fd = git_futils_open_ro(path); |
212 | git_off_t len; | |
da9abdd6 | 213 | int result; |
0d0fa7c3 RB |
214 | |
215 | if (fd < 0) | |
216 | return fd; | |
217 | ||
218 | len = git_futils_filesize(fd); | |
deafee7b RB |
219 | if (!git__is_sizet(len)) { |
220 | giterr_set(GITERR_OS, "File `%s` too large to mmap", path); | |
221 | return -1; | |
222 | } | |
0d0fa7c3 | 223 | |
da9abdd6 | 224 | result = git_futils_mmap_ro(out, fd, 0, (size_t)len); |
74fa4bfa RB |
225 | p_close(fd); |
226 | return result; | |
227 | } | |
228 | ||
f79026b4 | 229 | void git_futils_mmap_free(git_map *out) |
20e7f426 | 230 | { |
f79026b4 | 231 | p_munmap(out); |
20e7f426 SP |
232 | } |
233 | ||
ca1b6e54 RB |
234 | int git_futils_mkdir( |
235 | const char *path, | |
236 | const char *base, | |
237 | mode_t mode, | |
238 | uint32_t flags) | |
1a5204a7 | 239 | { |
97769280 | 240 | git_buf make_path = GIT_BUF_INIT; |
ca1b6e54 RB |
241 | ssize_t root = 0; |
242 | char lastch, *tail; | |
dc07184f | 243 | |
ca1b6e54 RB |
244 | /* build path and find "root" where we should start calling mkdir */ |
245 | if (git_path_join_unrooted(&make_path, path, base, &root) < 0) | |
246 | return -1; | |
dc07184f | 247 | |
ca1b6e54 RB |
248 | if (make_path.size == 0) { |
249 | giterr_set(GITERR_OS, "Attempt to create empty path"); | |
250 | goto fail; | |
97769280 | 251 | } |
f0b2bfe5 | 252 | |
ca1b6e54 RB |
253 | /* remove trailing slashes on path */ |
254 | while (make_path.ptr[make_path.size - 1] == '/') { | |
255 | make_path.size--; | |
256 | make_path.ptr[make_path.size] = '\0'; | |
257 | } | |
412de9a6 | 258 | |
ca1b6e54 RB |
259 | /* if we are not supposed to made the last element, truncate it */ |
260 | if ((flags & GIT_MKDIR_SKIP_LAST) != 0) | |
261 | git_buf_rtruncate_at_char(&make_path, '/'); | |
262 | ||
263 | /* if we are not supposed to make the whole path, reset root */ | |
264 | if ((flags & GIT_MKDIR_PATH) == 0) | |
265 | root = git_buf_rfind(&make_path, '/'); | |
266 | ||
267 | /* clip root to make_path length */ | |
268 | if (root >= (ssize_t)make_path.size) | |
269 | root = (ssize_t)make_path.size - 1; | |
0e26202c RB |
270 | if (root < 0) |
271 | root = 0; | |
ca1b6e54 RB |
272 | |
273 | tail = & make_path.ptr[root]; | |
274 | ||
275 | while (*tail) { | |
276 | /* advance tail to include next path component */ | |
277 | while (*tail == '/') | |
278 | tail++; | |
279 | while (*tail && *tail != '/') | |
280 | tail++; | |
281 | ||
282 | /* truncate path at next component */ | |
283 | lastch = *tail; | |
284 | *tail = '\0'; | |
285 | ||
286 | /* make directory */ | |
287 | if (p_mkdir(make_path.ptr, mode) < 0 && | |
288 | (errno != EEXIST || (flags & GIT_MKDIR_EXCL) != 0)) | |
289 | { | |
290 | giterr_set(GITERR_OS, "Failed to make directory '%s'", | |
291 | make_path.ptr); | |
292 | goto fail; | |
d5f25204 | 293 | } |
40c44d2f | 294 | |
ca1b6e54 RB |
295 | /* chmod if requested */ |
296 | if ((flags & GIT_MKDIR_CHMOD_PATH) != 0 || | |
297 | ((flags & GIT_MKDIR_CHMOD) != 0 && lastch == '\0')) | |
298 | { | |
299 | if (p_chmod(make_path.ptr, mode) < 0) { | |
300 | giterr_set(GITERR_OS, "Failed to set permissions on '%s'", | |
301 | make_path.ptr); | |
302 | goto fail; | |
303 | } | |
304 | } | |
f0b2bfe5 | 305 | |
ca1b6e54 | 306 | *tail = lastch; |
a993e4fe | 307 | } |
40c44d2f | 308 | |
97769280 | 309 | git_buf_free(&make_path); |
ca1b6e54 | 310 | return 0; |
77c3999c | 311 | |
ca1b6e54 RB |
312 | fail: |
313 | git_buf_free(&make_path); | |
314 | return -1; | |
315 | } | |
77c3999c | 316 | |
ca1b6e54 RB |
317 | int git_futils_mkdir_r(const char *path, const char *base, const mode_t mode) |
318 | { | |
319 | return git_futils_mkdir(path, base, mode, GIT_MKDIR_PATH); | |
170d3f2f | 320 | } |
321 | ||
97769280 | 322 | static int _rmdir_recurs_foreach(void *opaque, git_buf *path) |
42b3a460 | 323 | { |
1a2b8725 | 324 | git_directory_removal_type removal_type = *(git_directory_removal_type *)opaque; |
555aa453 | 325 | |
326 | assert(removal_type == GIT_DIRREMOVAL_EMPTY_HIERARCHY | |
327 | || removal_type == GIT_DIRREMOVAL_FILES_AND_DIRS | |
328 | || removal_type == GIT_DIRREMOVAL_ONLY_EMPTY_DIRS); | |
42b3a460 | 329 | |
1a481123 | 330 | if (git_path_isdir(path->ptr) == true) { |
deafee7b RB |
331 | if (git_path_direach(path, _rmdir_recurs_foreach, opaque) < 0) |
332 | return -1; | |
333 | ||
334 | if (p_rmdir(path->ptr) < 0) { | |
54bdc64a | 335 | if (removal_type == GIT_DIRREMOVAL_ONLY_EMPTY_DIRS && (errno == ENOTEMPTY || errno == EEXIST)) |
555aa453 | 336 | return 0; |
337 | ||
deafee7b RB |
338 | giterr_set(GITERR_OS, "Could not remove directory '%s'", path->ptr); |
339 | return -1; | |
340 | } | |
42b3a460 | 341 | |
deafee7b | 342 | return 0; |
858dba58 VM |
343 | } |
344 | ||
555aa453 | 345 | if (removal_type == GIT_DIRREMOVAL_FILES_AND_DIRS) { |
deafee7b RB |
346 | if (p_unlink(path->ptr) < 0) { |
347 | giterr_set(GITERR_OS, "Could not remove directory. File '%s' cannot be removed", path->ptr); | |
348 | return -1; | |
349 | } | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
555aa453 | 354 | if (removal_type == GIT_DIRREMOVAL_EMPTY_HIERARCHY) { |
355 | giterr_set(GITERR_OS, "Could not remove directory. File '%s' still present", path->ptr); | |
356 | return -1; | |
357 | } | |
358 | ||
359 | return 0; | |
42b3a460 MS |
360 | } |
361 | ||
1a2b8725 | 362 | int git_futils_rmdir_r(const char *path, git_directory_removal_type removal_type) |
42b3a460 | 363 | { |
97769280 RB |
364 | int error; |
365 | git_buf p = GIT_BUF_INIT; | |
366 | ||
367 | error = git_buf_sets(&p, path); | |
deafee7b | 368 | if (!error) |
555aa453 | 369 | error = _rmdir_recurs_foreach(&removal_type, &p); |
97769280 RB |
370 | git_buf_free(&p); |
371 | return error; | |
42b3a460 MS |
372 | } |
373 | ||
23059130 | 374 | #ifdef GIT_WIN32 |
349fb6d7 VM |
375 | struct win32_path { |
376 | wchar_t path[MAX_PATH]; | |
73b51450 | 377 | DWORD len; |
349fb6d7 | 378 | }; |
73b51450 | 379 | |
349fb6d7 | 380 | static int win32_expand_path(struct win32_path *s_root, const wchar_t *templ) |
73b51450 | 381 | { |
349fb6d7 VM |
382 | s_root->len = ExpandEnvironmentStringsW(templ, s_root->path, MAX_PATH); |
383 | return s_root->len ? 0 : -1; | |
73b51450 RB |
384 | } |
385 | ||
349fb6d7 | 386 | static int win32_find_file(git_buf *path, const struct win32_path *root, const char *filename) |
73b51450 | 387 | { |
0f4c6175 | 388 | size_t len, alloc_len; |
349fb6d7 | 389 | wchar_t *file_utf16 = NULL; |
6813169a | 390 | char file_utf8[GIT_PATH_MAX]; |
73b51450 RB |
391 | |
392 | if (!root || !filename || (len = strlen(filename)) == 0) | |
393 | return GIT_ENOTFOUND; | |
394 | ||
395 | /* allocate space for wchar_t path to file */ | |
0f4c6175 VM |
396 | alloc_len = root->len + len + 2; |
397 | file_utf16 = git__calloc(alloc_len, sizeof(wchar_t)); | |
deafee7b | 398 | GITERR_CHECK_ALLOC(file_utf16); |
73b51450 RB |
399 | |
400 | /* append root + '\\' + filename as wchar_t */ | |
401 | memcpy(file_utf16, root->path, root->len * sizeof(wchar_t)); | |
402 | ||
403 | if (*filename == '/' || *filename == '\\') | |
404 | filename++; | |
405 | ||
0f4c6175 | 406 | git__utf8_to_16(file_utf16 + root->len - 1, alloc_len, filename); |
73b51450 | 407 | |
73b51450 RB |
408 | /* check access */ |
409 | if (_waccess(file_utf16, F_OK) < 0) { | |
6813169a VM |
410 | git__free(file_utf16); |
411 | return GIT_ENOTFOUND; | |
73b51450 RB |
412 | } |
413 | ||
6813169a VM |
414 | git__utf16_to_8(file_utf8, file_utf16); |
415 | git_path_mkposix(file_utf8); | |
416 | git_buf_sets(path, file_utf8); | |
73b51450 | 417 | |
73b51450 | 418 | git__free(file_utf16); |
6813169a | 419 | return 0; |
73b51450 | 420 | } |
8b3de0b6 | 421 | static wchar_t* win32_nextpath(wchar_t *path, wchar_t *buf, size_t buflen) |
549ee21a | 422 | { |
8b3de0b6 | 423 | wchar_t term, *base = path; |
549ee21a | 424 | |
8b3de0b6 | 425 | assert(path && buf && buflen); |
549ee21a | 426 | |
8b3de0b6 | 427 | term = (*path == L'"') ? *path++ : L';'; |
549ee21a | 428 | |
8b3de0b6 SS |
429 | for (buflen--; *path && *path != term && buflen; buflen--) |
430 | *buf++ = *path++; | |
549ee21a | 431 | |
8b3de0b6 | 432 | *buf = L'\0'; /* reserved a byte via initial subtract */ |
549ee21a | 433 | |
8b3de0b6 SS |
434 | while (*path == term || *path == L';') |
435 | path++; | |
549ee21a | 436 | |
8b3de0b6 | 437 | return (path != base) ? path : NULL; |
549ee21a SS |
438 | } |
439 | ||
19aa8416 | 440 | static int win32_find_system_file_using_path(git_buf *path, const char *filename) |
549ee21a | 441 | { |
77ddd4cc | 442 | wchar_t * env = NULL; |
549ee21a SS |
443 | struct win32_path root; |
444 | ||
77ddd4cc SS |
445 | env = _wgetenv(L"PATH"); |
446 | if (!env) | |
549ee21a SS |
447 | return -1; |
448 | ||
549ee21a | 449 | // search in all paths defined in PATH |
dee18b82 | 450 | while ((env = win32_nextpath(env, root.path, MAX_PATH - 1)) != NULL && *root.path) |
549ee21a SS |
451 | { |
452 | wchar_t * pfin = root.path + wcslen(root.path) - 1; // last char of the current path entry | |
453 | ||
454 | // ensure trailing slash | |
455 | if (*pfin != L'/' && *pfin != L'\\') | |
77ddd4cc | 456 | wcscpy(++pfin, L"\\"); // we have enough space left, MAX_PATH - 1 is used in nextpath above |
549ee21a SS |
457 | |
458 | root.len = (DWORD)wcslen(root.path) + 1; | |
459 | ||
460 | if (win32_find_file(path, &root, "git.cmd") == 0 || win32_find_file(path, &root, "git.exe") == 0) { | |
461 | // we found the cmd or bin directory of a git installaton | |
462 | if (root.len > 5) { | |
77ddd4cc | 463 | wcscpy(root.path + wcslen(root.path) - 4, L"etc\\"); |
549ee21a | 464 | if (win32_find_file(path, &root, filename) == 0) |
549ee21a | 465 | return 0; |
549ee21a SS |
466 | } |
467 | } | |
468 | } | |
469 | ||
549ee21a SS |
470 | return GIT_ENOTFOUND; |
471 | } | |
73b51450 | 472 | |
19aa8416 | 473 | static int win32_find_system_file_using_registry(git_buf *path, const char *filename) |
73b51450 | 474 | { |
6605f51d SS |
475 | #ifndef _WIN64 |
476 | #define REG_MSYSGIT_INSTALL L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Git_is1" | |
477 | #else | |
478 | #define REG_MSYSGIT_INSTALL L"SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Git_is1" | |
479 | #endif | |
480 | ||
349fb6d7 | 481 | struct win32_path root; |
9cde607c | 482 | |
6605f51d SS |
483 | HKEY hKey; |
484 | DWORD dwType = REG_SZ; | |
485 | DWORD dwSize = MAX_PATH; | |
486 | ||
487 | root.len = 0; | |
488 | if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, REG_MSYSGIT_INSTALL, 0, KEY_ALL_ACCESS, &hKey) == ERROR_SUCCESS) | |
29ef309e | 489 | { |
6605f51d SS |
490 | if (RegQueryValueExW(hKey, L"InstallLocation", NULL, &dwType,(LPBYTE)&root.path, &dwSize) == ERROR_SUCCESS) |
491 | { | |
492 | // InstallLocation points to the root of the msysgit directory | |
77ddd4cc | 493 | if (dwSize + 4 > MAX_PATH) // 4 = wcslen(L"etc\\") |
6605f51d SS |
494 | { |
495 | giterr_set(GITERR_OS, "Cannot locate the system's msysgit directory - path too long"); | |
496 | return -1; | |
497 | } | |
77ddd4cc | 498 | wcscat(root.path, L"etc\\"); |
6605f51d SS |
499 | root.len = (DWORD)wcslen(root.path) + 1; |
500 | } | |
501 | } | |
502 | RegCloseKey(hKey); | |
503 | ||
504 | if (!root.len) { | |
505 | giterr_set(GITERR_OS, "Cannot locate the system's msysgit directory"); | |
349fb6d7 VM |
506 | return -1; |
507 | } | |
508 | ||
29ef309e | 509 | if (win32_find_file(path, &root, filename) < 0) { |
0b956819 | 510 | giterr_set(GITERR_OS, "The system file '%s' doesn't exist", filename); |
29ef309e RB |
511 | git_buf_clear(path); |
512 | return GIT_ENOTFOUND; | |
513 | } | |
514 | ||
349fb6d7 | 515 | return 0; |
32a4e3b7 SS |
516 | } |
517 | #endif | |
349fb6d7 | 518 | |
32a4e3b7 SS |
519 | int git_futils_find_system_file(git_buf *path, const char *filename) |
520 | { | |
521 | #ifdef GIT_WIN32 | |
522 | // try to find git.exe/git.cmd on path | |
dee18b82 | 523 | if (!win32_find_system_file_using_path(path, filename)) |
32a4e3b7 SS |
524 | return 0; |
525 | ||
526 | // try to find msysgit installation path using registry | |
dee18b82 | 527 | if (!win32_find_system_file_using_registry(path, filename)) |
32a4e3b7 | 528 | return 0; |
349fb6d7 | 529 | #else |
cb8a7961 VM |
530 | if (git_buf_joinpath(path, "/etc", filename) < 0) |
531 | return -1; | |
73b51450 | 532 | |
1a481123 | 533 | if (git_path_exists(path->ptr) == true) |
deafee7b | 534 | return 0; |
32a4e3b7 | 535 | #endif |
73b51450 RB |
536 | |
537 | git_buf_clear(path); | |
0b956819 | 538 | giterr_set(GITERR_OS, "The system file '%s' doesn't exist", filename); |
349fb6d7 | 539 | return GIT_ENOTFOUND; |
349fb6d7 | 540 | } |
73b51450 | 541 | |
349fb6d7 VM |
542 | int git_futils_find_global_file(git_buf *path, const char *filename) |
543 | { | |
aed8f8a1 SS |
544 | const char *home = getenv("HOME"); |
545 | ||
73b51450 | 546 | #ifdef GIT_WIN32 |
349fb6d7 VM |
547 | struct win32_path root; |
548 | ||
aed8f8a1 SS |
549 | if (home != NULL) { |
550 | if (git_buf_joinpath(path, home, filename) < 0) | |
551 | return -1; | |
552 | ||
553 | if (git_path_exists(path->ptr)) { | |
554 | return 0; | |
555 | } | |
556 | } | |
557 | ||
f2b126c7 SS |
558 | if (getenv("HOMEPATH") != NULL) { |
559 | if (win32_expand_path(&root, L"%HOMEDRIVE%%HOMEPATH%\\") < 0 || | |
560 | root.path[0] == L'%') /* i.e. no expansion happened */ | |
561 | { | |
562 | giterr_set(GITERR_OS, "Cannot locate the user's profile directory"); | |
563 | return -1; | |
564 | } | |
565 | } else { | |
566 | if (win32_expand_path(&root, L"%USERPROFILE%\\") < 0 || | |
567 | root.path[0] == L'%') /* i.e. no expansion happened */ | |
568 | { | |
569 | giterr_set(GITERR_OS, "Cannot locate the user's profile directory"); | |
570 | return -1; | |
571 | } | |
349fb6d7 VM |
572 | } |
573 | ||
29ef309e | 574 | if (win32_find_file(path, &root, filename) < 0) { |
0b956819 | 575 | giterr_set(GITERR_OS, "The global file '%s' doesn't exist", filename); |
29ef309e RB |
576 | git_buf_clear(path); |
577 | return GIT_ENOTFOUND; | |
578 | } | |
579 | ||
349fb6d7 | 580 | return 0; |
73b51450 | 581 | #else |
349fb6d7 VM |
582 | if (home == NULL) { |
583 | giterr_set(GITERR_OS, "Global file lookup failed. " | |
584 | "Cannot locate the user's home directory"); | |
585 | return -1; | |
586 | } | |
587 | ||
588 | if (git_buf_joinpath(path, home, filename) < 0) | |
589 | return -1; | |
590 | ||
591 | if (git_path_exists(path->ptr) == false) { | |
0b956819 | 592 | giterr_set(GITERR_OS, "The global file '%s' doesn't exist", filename); |
349fb6d7 VM |
593 | git_buf_clear(path); |
594 | return GIT_ENOTFOUND; | |
595 | } | |
596 | ||
597 | return 0; | |
73b51450 RB |
598 | #endif |
599 | } | |
8651c10f BS |
600 | |
601 | int git_futils_fake_symlink(const char *old, const char *new) | |
602 | { | |
603 | int retcode = GIT_ERROR; | |
604 | int fd = git_futils_creat_withpath(new, 0755, 0644); | |
605 | if (fd >= 0) { | |
606 | retcode = p_write(fd, old, strlen(old)); | |
607 | p_close(fd); | |
608 | } | |
609 | return retcode; | |
610 | } | |
ca1b6e54 | 611 | |
85bd1746 | 612 | static int cp_by_fd(int ifd, int ofd, bool close_fd_when_done) |
ca1b6e54 RB |
613 | { |
614 | int error = 0; | |
615 | char buffer[4096]; | |
616 | ssize_t len = 0; | |
617 | ||
618 | while (!error && (len = p_read(ifd, buffer, sizeof(buffer))) > 0) | |
619 | /* p_write() does not have the same semantics as write(). It loops | |
620 | * internally and will return 0 when it has completed writing. | |
621 | */ | |
622 | error = p_write(ofd, buffer, len); | |
623 | ||
624 | if (len < 0) { | |
625 | giterr_set(GITERR_OS, "Read error while copying file"); | |
626 | error = (int)len; | |
627 | } | |
628 | ||
85bd1746 | 629 | if (close_fd_when_done) { |
ca1b6e54 RB |
630 | p_close(ifd); |
631 | p_close(ofd); | |
632 | } | |
633 | ||
634 | return error; | |
635 | } | |
636 | ||
85bd1746 | 637 | int git_futils_cp(const char *from, const char *to, mode_t filemode) |
ca1b6e54 RB |
638 | { |
639 | int ifd, ofd; | |
640 | ||
ca1b6e54 RB |
641 | if ((ifd = git_futils_open_ro(from)) < 0) |
642 | return ifd; | |
643 | ||
644 | if ((ofd = p_open(to, O_WRONLY | O_CREAT | O_EXCL, filemode)) < 0) { | |
645 | if (errno == ENOENT || errno == ENOTDIR) | |
646 | ofd = GIT_ENOTFOUND; | |
647 | giterr_set(GITERR_OS, "Failed to open '%s' for writing", to); | |
648 | p_close(ifd); | |
649 | return ofd; | |
650 | } | |
651 | ||
85bd1746 | 652 | return cp_by_fd(ifd, ofd, true); |
ca1b6e54 RB |
653 | } |
654 | ||
85bd1746 | 655 | static int cp_link(const char *from, const char *to, size_t link_size) |
ca1b6e54 RB |
656 | { |
657 | int error = 0; | |
658 | ssize_t read_len; | |
85bd1746 | 659 | char *link_data = git__malloc(link_size + 1); |
ca1b6e54 RB |
660 | GITERR_CHECK_ALLOC(link_data); |
661 | ||
85bd1746 RB |
662 | read_len = p_readlink(from, link_data, link_size); |
663 | if (read_len != (ssize_t)link_size) { | |
ca1b6e54 RB |
664 | giterr_set(GITERR_OS, "Failed to read symlink data for '%s'", from); |
665 | error = -1; | |
666 | } | |
667 | else { | |
668 | link_data[read_len] = '\0'; | |
669 | ||
670 | if (p_symlink(link_data, to) < 0) { | |
671 | giterr_set(GITERR_OS, "Could not symlink '%s' as '%s'", | |
672 | link_data, to); | |
673 | error = -1; | |
674 | } | |
675 | } | |
676 | ||
677 | git__free(link_data); | |
678 | return error; | |
679 | } | |
680 | ||
681 | typedef struct { | |
682 | const char *to_root; | |
683 | git_buf to; | |
684 | ssize_t from_prefix; | |
685 | uint32_t flags; | |
686 | uint32_t mkdir_flags; | |
687 | mode_t dirmode; | |
688 | } cp_r_info; | |
689 | ||
690 | static int _cp_r_callback(void *ref, git_buf *from) | |
691 | { | |
692 | cp_r_info *info = ref; | |
693 | struct stat from_st, to_st; | |
694 | bool exists = false; | |
695 | ||
696 | if ((info->flags & GIT_CPDIR_COPY_DOTFILES) == 0 && | |
697 | from->ptr[git_path_basename_offset(from)] == '.') | |
698 | return 0; | |
699 | ||
700 | if (git_buf_joinpath( | |
701 | &info->to, info->to_root, from->ptr + info->from_prefix) < 0) | |
702 | return -1; | |
703 | ||
704 | if (p_lstat(info->to.ptr, &to_st) < 0) { | |
2eb4edf5 | 705 | if (errno != ENOENT && errno != ENOTDIR) { |
ca1b6e54 RB |
706 | giterr_set(GITERR_OS, |
707 | "Could not access %s while copying files", info->to.ptr); | |
708 | return -1; | |
709 | } | |
710 | } else | |
711 | exists = true; | |
712 | ||
713 | if (git_path_lstat(from->ptr, &from_st) < 0) | |
714 | return -1; | |
715 | ||
716 | if (S_ISDIR(from_st.st_mode)) { | |
717 | int error = 0; | |
718 | mode_t oldmode = info->dirmode; | |
719 | ||
720 | /* if we are not chmod'ing, then overwrite dirmode */ | |
721 | if ((info->flags & GIT_CPDIR_CHMOD) == 0) | |
722 | info->dirmode = from_st.st_mode; | |
723 | ||
724 | /* make directory now if CREATE_EMPTY_DIRS is requested and needed */ | |
725 | if (!exists && (info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) != 0) | |
726 | error = git_futils_mkdir( | |
727 | info->to.ptr, NULL, info->dirmode, info->mkdir_flags); | |
728 | ||
729 | /* recurse onto target directory */ | |
730 | if (!exists || S_ISDIR(to_st.st_mode)) | |
731 | error = git_path_direach(from, _cp_r_callback, info); | |
732 | ||
733 | if (oldmode != 0) | |
734 | info->dirmode = oldmode; | |
735 | ||
736 | return error; | |
737 | } | |
738 | ||
739 | if (exists) { | |
740 | if ((info->flags & GIT_CPDIR_OVERWRITE) == 0) | |
741 | return 0; | |
742 | ||
743 | if (p_unlink(info->to.ptr) < 0) { | |
744 | giterr_set(GITERR_OS, "Cannot overwrite existing file '%s'", | |
745 | info->to.ptr); | |
746 | return -1; | |
747 | } | |
748 | } | |
749 | ||
750 | /* Done if this isn't a regular file or a symlink */ | |
751 | if (!S_ISREG(from_st.st_mode) && | |
752 | (!S_ISLNK(from_st.st_mode) || | |
753 | (info->flags & GIT_CPDIR_COPY_SYMLINKS) == 0)) | |
754 | return 0; | |
755 | ||
756 | /* Make container directory on demand if needed */ | |
757 | if ((info->flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0 && | |
758 | git_futils_mkdir( | |
759 | info->to.ptr, NULL, info->dirmode, info->mkdir_flags) < 0) | |
760 | return -1; | |
761 | ||
762 | /* make symlink or regular file */ | |
763 | if (S_ISLNK(from_st.st_mode)) | |
85bd1746 | 764 | return cp_link(from->ptr, info->to.ptr, (size_t)from_st.st_size); |
ca1b6e54 | 765 | else |
85bd1746 | 766 | return git_futils_cp(from->ptr, info->to.ptr, from_st.st_mode); |
ca1b6e54 RB |
767 | } |
768 | ||
769 | int git_futils_cp_r( | |
770 | const char *from, | |
771 | const char *to, | |
772 | uint32_t flags, | |
773 | mode_t dirmode) | |
774 | { | |
775 | int error; | |
776 | git_buf path = GIT_BUF_INIT; | |
777 | cp_r_info info; | |
778 | ||
779 | if (git_buf_sets(&path, from) < 0) | |
780 | return -1; | |
781 | ||
782 | info.to_root = to; | |
783 | info.flags = flags; | |
784 | info.dirmode = dirmode; | |
785 | info.from_prefix = path.size; | |
786 | git_buf_init(&info.to, 0); | |
787 | ||
788 | /* precalculate mkdir flags */ | |
789 | if ((flags & GIT_CPDIR_CREATE_EMPTY_DIRS) == 0) { | |
790 | info.mkdir_flags = GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST; | |
791 | if ((flags & GIT_CPDIR_CHMOD) != 0) | |
792 | info.mkdir_flags |= GIT_MKDIR_CHMOD_PATH; | |
793 | } else { | |
794 | info.mkdir_flags = | |
795 | ((flags & GIT_CPDIR_CHMOD) != 0) ? GIT_MKDIR_CHMOD : 0; | |
796 | } | |
797 | ||
798 | error = _cp_r_callback(&info, &path); | |
799 | ||
800 | git_buf_free(&path); | |
07c06f7a | 801 | git_buf_free(&info.to); |
ca1b6e54 RB |
802 | |
803 | return error; | |
804 | } |