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Commit | Line | Data |
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bbccc6f3 AD |
1 | /* |
2 | * create_inode.c --- create an inode | |
3 | * | |
4 | * Copyright (C) 2014 Robert Yang <liezhi.yang@windriver.com> | |
5 | * | |
6 | * %Begin-Header% | |
7 | * This file may be redistributed under the terms of the GNU library | |
8 | * General Public License, version 2. | |
9 | * %End-Header% | |
10 | */ | |
11 | ||
76f13234 DW |
12 | #define _FILE_OFFSET_BITS 64 |
13 | #define _LARGEFILE64_SOURCE 1 | |
14 | #define _GNU_SOURCE 1 | |
15 | ||
16 | #include "config.h" | |
8f8d8a57 | 17 | #include <time.h> |
76f13234 | 18 | #include <sys/types.h> |
8f8d8a57 | 19 | #include <unistd.h> |
bbccc6f3 | 20 | #include <limits.h> /* for PATH_MAX */ |
c84da2ee RB |
21 | #ifdef HAVE_ATTR_XATTR_H |
22 | #include <attr/xattr.h> | |
23 | #endif | |
76f13234 | 24 | #include <sys/ioctl.h> |
3fb715b5 MF |
25 | #ifdef HAVE_SYS_SYSMACROS_H |
26 | #include <sys/sysmacros.h> | |
27 | #endif | |
28 | ||
76f13234 DW |
29 | #include <ext2fs/ext2fs.h> |
30 | #include <ext2fs/ext2_types.h> | |
31 | #include <ext2fs/fiemap.h> | |
8f8d8a57 | 32 | |
0d4deba2 | 33 | #include "create_inode.h" |
99ceb8ec | 34 | #include "support/nls-enable.h" |
0d4deba2 | 35 | |
ce600dc4 | 36 | /* 64KiB is the minimium blksize to best minimize system call overhead. */ |
76f13234 | 37 | #define COPY_FILE_BUFLEN 65536 |
ce600dc4 | 38 | |
a433db04 DW |
39 | static int ext2_file_type(unsigned int mode) |
40 | { | |
41 | if (LINUX_S_ISREG(mode)) | |
42 | return EXT2_FT_REG_FILE; | |
43 | ||
44 | if (LINUX_S_ISDIR(mode)) | |
45 | return EXT2_FT_DIR; | |
46 | ||
47 | if (LINUX_S_ISCHR(mode)) | |
48 | return EXT2_FT_CHRDEV; | |
49 | ||
50 | if (LINUX_S_ISBLK(mode)) | |
51 | return EXT2_FT_BLKDEV; | |
52 | ||
53 | if (LINUX_S_ISLNK(mode)) | |
54 | return EXT2_FT_SYMLINK; | |
55 | ||
56 | if (LINUX_S_ISFIFO(mode)) | |
57 | return EXT2_FT_FIFO; | |
58 | ||
59 | if (LINUX_S_ISSOCK(mode)) | |
60 | return EXT2_FT_SOCK; | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
f84894bc | 65 | /* Link an inode number to a directory */ |
a3111e80 DW |
66 | static errcode_t add_link(ext2_filsys fs, ext2_ino_t parent_ino, |
67 | ext2_ino_t ino, const char *name) | |
f84894bc RY |
68 | { |
69 | struct ext2_inode inode; | |
70 | errcode_t retval; | |
71 | ||
a3111e80 | 72 | retval = ext2fs_read_inode(fs, ino, &inode); |
f84894bc | 73 | if (retval) { |
b04af4fe | 74 | com_err(__func__, retval, _("while reading inode %u"), ino); |
f84894bc RY |
75 | return retval; |
76 | } | |
77 | ||
a433db04 DW |
78 | retval = ext2fs_link(fs, parent_ino, name, ino, |
79 | ext2_file_type(inode.i_mode)); | |
f84894bc | 80 | if (retval == EXT2_ET_DIR_NO_SPACE) { |
a3111e80 | 81 | retval = ext2fs_expand_dir(fs, parent_ino); |
f84894bc | 82 | if (retval) { |
b04af4fe DW |
83 | com_err(__func__, retval, |
84 | _("while expanding directory")); | |
f84894bc RY |
85 | return retval; |
86 | } | |
a433db04 DW |
87 | retval = ext2fs_link(fs, parent_ino, name, ino, |
88 | ext2_file_type(inode.i_mode)); | |
f84894bc RY |
89 | } |
90 | if (retval) { | |
b04af4fe | 91 | com_err(__func__, retval, _("while linking \"%s\""), name); |
f84894bc RY |
92 | return retval; |
93 | } | |
94 | ||
95 | inode.i_links_count++; | |
96 | ||
a3111e80 | 97 | retval = ext2fs_write_inode(fs, ino, &inode); |
f84894bc | 98 | if (retval) |
b04af4fe | 99 | com_err(__func__, retval, _("while writing inode %u"), ino); |
f84894bc RY |
100 | |
101 | return retval; | |
102 | } | |
103 | ||
b6960654 | 104 | /* Set the uid, gid, mode and time for the inode */ |
25f291c9 TT |
105 | static errcode_t set_inode_extra(ext2_filsys fs, ext2_ino_t ino, |
106 | struct stat *st) | |
b6960654 RY |
107 | { |
108 | errcode_t retval; | |
109 | struct ext2_inode inode; | |
110 | ||
a3111e80 | 111 | retval = ext2fs_read_inode(fs, ino, &inode); |
b6960654 | 112 | if (retval) { |
b04af4fe | 113 | com_err(__func__, retval, _("while reading inode %u"), ino); |
b6960654 RY |
114 | return retval; |
115 | } | |
116 | ||
b04af4fe DW |
117 | inode.i_uid = st->st_uid; |
118 | inode.i_gid = st->st_gid; | |
119 | inode.i_mode |= st->st_mode; | |
120 | inode.i_atime = st->st_atime; | |
121 | inode.i_mtime = st->st_mtime; | |
122 | inode.i_ctime = st->st_ctime; | |
b6960654 | 123 | |
a3111e80 | 124 | retval = ext2fs_write_inode(fs, ino, &inode); |
3aec816f | 125 | if (retval) |
b04af4fe | 126 | com_err(__func__, retval, _("while writing inode %u"), ino); |
3aec816f | 127 | return retval; |
b6960654 RY |
128 | } |
129 | ||
25f291c9 | 130 | #ifdef HAVE_LLISTXATTR |
b04af4fe DW |
131 | static errcode_t set_inode_xattr(ext2_filsys fs, ext2_ino_t ino, |
132 | const char *filename) | |
c84da2ee | 133 | { |
c84da2ee | 134 | errcode_t retval, close_retval; |
c84da2ee RB |
135 | struct ext2_xattr_handle *handle; |
136 | ssize_t size, value_size; | |
76f13234 | 137 | char *list = NULL; |
c84da2ee RB |
138 | int i; |
139 | ||
140 | size = llistxattr(filename, NULL, 0); | |
141 | if (size == -1) { | |
b04af4fe DW |
142 | retval = errno; |
143 | com_err(__func__, retval, _("while listing attributes of \"%s\""), | |
144 | filename); | |
145 | return retval; | |
c84da2ee RB |
146 | } else if (size == 0) { |
147 | return 0; | |
148 | } | |
149 | ||
150 | retval = ext2fs_xattrs_open(fs, ino, &handle); | |
151 | if (retval) { | |
152 | if (retval == EXT2_ET_MISSING_EA_FEATURE) | |
153 | return 0; | |
b04af4fe | 154 | com_err(__func__, retval, _("while opening inode %u"), ino); |
c84da2ee RB |
155 | return retval; |
156 | } | |
157 | ||
158 | retval = ext2fs_get_mem(size, &list); | |
159 | if (retval) { | |
b04af4fe | 160 | com_err(__func__, retval, _("while allocating memory")); |
c84da2ee RB |
161 | goto out; |
162 | } | |
163 | ||
164 | size = llistxattr(filename, list, size); | |
165 | if (size == -1) { | |
c84da2ee | 166 | retval = errno; |
b04af4fe DW |
167 | com_err(__func__, retval, _("while listing attributes of \"%s\""), |
168 | filename); | |
c84da2ee RB |
169 | goto out; |
170 | } | |
171 | ||
172 | for (i = 0; i < size; i += strlen(&list[i]) + 1) { | |
173 | const char *name = &list[i]; | |
174 | char *value; | |
175 | ||
344c043b | 176 | value_size = lgetxattr(filename, name, NULL, 0); |
c84da2ee | 177 | if (value_size == -1) { |
c84da2ee | 178 | retval = errno; |
b04af4fe DW |
179 | com_err(__func__, retval, |
180 | _("while reading attribute \"%s\" of \"%s\""), | |
181 | name, filename); | |
c84da2ee RB |
182 | break; |
183 | } | |
184 | ||
185 | retval = ext2fs_get_mem(value_size, &value); | |
186 | if (retval) { | |
b04af4fe | 187 | com_err(__func__, retval, _("while allocating memory")); |
c84da2ee RB |
188 | break; |
189 | } | |
190 | ||
344c043b | 191 | value_size = lgetxattr(filename, name, value, value_size); |
c84da2ee RB |
192 | if (value_size == -1) { |
193 | ext2fs_free_mem(&value); | |
c84da2ee | 194 | retval = errno; |
b04af4fe DW |
195 | com_err(__func__, retval, |
196 | _("while reading attribute \"%s\" of \"%s\""), | |
197 | name, filename); | |
c84da2ee RB |
198 | break; |
199 | } | |
200 | ||
201 | retval = ext2fs_xattr_set(handle, name, value, value_size); | |
202 | ext2fs_free_mem(&value); | |
203 | if (retval) { | |
204 | com_err(__func__, retval, | |
b04af4fe DW |
205 | _("while writing attribute \"%s\" to inode %u"), |
206 | name, ino); | |
c84da2ee RB |
207 | break; |
208 | } | |
209 | ||
210 | } | |
211 | out: | |
212 | ext2fs_free_mem(&list); | |
213 | close_retval = ext2fs_xattrs_close(&handle); | |
214 | if (close_retval) { | |
b04af4fe | 215 | com_err(__func__, retval, _("while closing inode %u"), ino); |
c84da2ee RB |
216 | retval = retval ? retval : close_retval; |
217 | } | |
218 | return retval; | |
25f291c9 TT |
219 | return 0; |
220 | } | |
c84da2ee | 221 | #else /* HAVE_LLISTXATTR */ |
25f291c9 TT |
222 | static errcode_t set_inode_xattr(ext2_filsys fs EXT2FS_ATTR((unused)), |
223 | ext2_ino_t ino EXT2FS_ATTR((unused)), | |
224 | const char *filename EXT2FS_ATTR((unused))) | |
225 | { | |
c84da2ee | 226 | return 0; |
c84da2ee | 227 | } |
25f291c9 | 228 | #endif /* HAVE_LLISTXATTR */ |
c84da2ee | 229 | |
c61e0068 | 230 | /* Make a special files (block and character devices), fifo's, and sockets */ |
a3111e80 DW |
231 | errcode_t do_mknod_internal(ext2_filsys fs, ext2_ino_t cwd, const char *name, |
232 | struct stat *st) | |
0d4deba2 | 233 | { |
b2346118 | 234 | ext2_ino_t ino; |
3cbb51f9 | 235 | errcode_t retval; |
b2346118 | 236 | struct ext2_inode inode; |
3cbb51f9 | 237 | unsigned long devmajor, devminor, mode; |
b2346118 RY |
238 | int filetype; |
239 | ||
240 | switch(st->st_mode & S_IFMT) { | |
9c891f7e DW |
241 | case S_IFCHR: |
242 | mode = LINUX_S_IFCHR; | |
243 | filetype = EXT2_FT_CHRDEV; | |
244 | break; | |
245 | case S_IFBLK: | |
246 | mode = LINUX_S_IFBLK; | |
247 | filetype = EXT2_FT_BLKDEV; | |
248 | break; | |
249 | case S_IFIFO: | |
250 | mode = LINUX_S_IFIFO; | |
251 | filetype = EXT2_FT_FIFO; | |
252 | break; | |
c61e0068 DW |
253 | case S_IFSOCK: |
254 | mode = LINUX_S_IFSOCK; | |
255 | filetype = EXT2_FT_SOCK; | |
ec3a42b1 | 256 | break; |
3aec816f | 257 | default: |
ec3a42b1 | 258 | return EXT2_ET_INVALID_ARGUMENT; |
b2346118 RY |
259 | } |
260 | ||
a3111e80 | 261 | retval = ext2fs_new_inode(fs, cwd, 010755, 0, &ino); |
b2346118 | 262 | if (retval) { |
b04af4fe DW |
263 | com_err(__func__, retval, _("while allocating inode \"%s\""), |
264 | name); | |
b2346118 RY |
265 | return retval; |
266 | } | |
267 | ||
268 | #ifdef DEBUGFS | |
269 | printf("Allocated inode: %u\n", ino); | |
270 | #endif | |
a3111e80 | 271 | retval = ext2fs_link(fs, cwd, name, ino, filetype); |
b2346118 | 272 | if (retval == EXT2_ET_DIR_NO_SPACE) { |
a3111e80 | 273 | retval = ext2fs_expand_dir(fs, cwd); |
b2346118 | 274 | if (retval) { |
b04af4fe DW |
275 | com_err(__func__, retval, |
276 | _("while expanding directory")); | |
b2346118 RY |
277 | return retval; |
278 | } | |
a3111e80 | 279 | retval = ext2fs_link(fs, cwd, name, ino, filetype); |
b2346118 RY |
280 | } |
281 | if (retval) { | |
b04af4fe | 282 | com_err(name, retval, _("while creating inode \"%s\""), name); |
ec3a42b1 | 283 | return retval; |
b2346118 | 284 | } |
a3111e80 | 285 | if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) |
b2346118 | 286 | com_err(__func__, 0, "Warning: inode already set"); |
a3111e80 | 287 | ext2fs_inode_alloc_stats2(fs, ino, +1, 0); |
b2346118 RY |
288 | memset(&inode, 0, sizeof(inode)); |
289 | inode.i_mode = mode; | |
290 | inode.i_atime = inode.i_ctime = inode.i_mtime = | |
a3111e80 | 291 | fs->now ? fs->now : time(0); |
b2346118 | 292 | |
3cbb51f9 AD |
293 | if (filetype != S_IFIFO) { |
294 | devmajor = major(st->st_rdev); | |
295 | devminor = minor(st->st_rdev); | |
296 | ||
297 | if ((devmajor < 256) && (devminor < 256)) { | |
298 | inode.i_block[0] = devmajor * 256 + devminor; | |
299 | inode.i_block[1] = 0; | |
300 | } else { | |
301 | inode.i_block[0] = 0; | |
302 | inode.i_block[1] = (devminor & 0xff) | (devmajor << 8) | | |
303 | ((devminor & ~0xff) << 12); | |
304 | } | |
b2346118 RY |
305 | } |
306 | inode.i_links_count = 1; | |
307 | ||
a3111e80 | 308 | retval = ext2fs_write_new_inode(fs, ino, &inode); |
b2346118 | 309 | if (retval) |
b04af4fe | 310 | com_err(__func__, retval, _("while writing inode %u"), ino); |
b2346118 RY |
311 | |
312 | return retval; | |
0d4deba2 RY |
313 | } |
314 | ||
315 | /* Make a symlink name -> target */ | |
a3111e80 DW |
316 | errcode_t do_symlink_internal(ext2_filsys fs, ext2_ino_t cwd, const char *name, |
317 | char *target, ext2_ino_t root) | |
0d4deba2 | 318 | { |
b25ddc5e RY |
319 | char *cp; |
320 | ext2_ino_t parent_ino; | |
321 | errcode_t retval; | |
b25ddc5e RY |
322 | |
323 | cp = strrchr(name, '/'); | |
324 | if (cp) { | |
325 | *cp = 0; | |
a3111e80 | 326 | retval = ext2fs_namei(fs, root, cwd, name, &parent_ino); |
8f8d8a57 | 327 | if (retval) { |
b25ddc5e RY |
328 | com_err(name, retval, 0); |
329 | return retval; | |
330 | } | |
331 | name = cp+1; | |
332 | } else | |
333 | parent_ino = cwd; | |
334 | ||
a3111e80 | 335 | retval = ext2fs_symlink(fs, parent_ino, 0, name, target); |
b25ddc5e | 336 | if (retval == EXT2_ET_DIR_NO_SPACE) { |
a3111e80 | 337 | retval = ext2fs_expand_dir(fs, parent_ino); |
b25ddc5e | 338 | if (retval) { |
9c891f7e | 339 | com_err("do_symlink_internal", retval, |
b04af4fe | 340 | _("while expanding directory")); |
b25ddc5e RY |
341 | return retval; |
342 | } | |
b04af4fe | 343 | retval = ext2fs_symlink(fs, parent_ino, 0, name, target); |
b25ddc5e | 344 | } |
3aec816f | 345 | if (retval) |
b04af4fe DW |
346 | com_err("ext2fs_symlink", retval, |
347 | _("while creating symlink \"%s\""), name); | |
3aec816f | 348 | return retval; |
0d4deba2 RY |
349 | } |
350 | ||
351 | /* Make a directory in the fs */ | |
a3111e80 | 352 | errcode_t do_mkdir_internal(ext2_filsys fs, ext2_ino_t cwd, const char *name, |
25f291c9 | 353 | ext2_ino_t root) |
0d4deba2 | 354 | { |
3068f03f | 355 | char *cp; |
c4c9bc59 | 356 | ext2_ino_t parent_ino; |
3068f03f | 357 | errcode_t retval; |
3068f03f RY |
358 | |
359 | ||
360 | cp = strrchr(name, '/'); | |
361 | if (cp) { | |
362 | *cp = 0; | |
a3111e80 | 363 | retval = ext2fs_namei(fs, root, cwd, name, &parent_ino); |
8f8d8a57 | 364 | if (retval) { |
b04af4fe DW |
365 | com_err(name, retval, _("while looking up \"%s\""), |
366 | name); | |
3068f03f RY |
367 | return retval; |
368 | } | |
369 | name = cp+1; | |
370 | } else | |
371 | parent_ino = cwd; | |
372 | ||
a3111e80 | 373 | retval = ext2fs_mkdir(fs, parent_ino, 0, name); |
3068f03f | 374 | if (retval == EXT2_ET_DIR_NO_SPACE) { |
a3111e80 | 375 | retval = ext2fs_expand_dir(fs, parent_ino); |
3068f03f | 376 | if (retval) { |
b04af4fe DW |
377 | com_err(__func__, retval, |
378 | _("while expanding directory")); | |
3068f03f RY |
379 | return retval; |
380 | } | |
b04af4fe | 381 | retval = ext2fs_mkdir(fs, parent_ino, 0, name); |
3068f03f | 382 | } |
3aec816f | 383 | if (retval) |
b04af4fe DW |
384 | com_err("ext2fs_mkdir", retval, |
385 | _("while creating directory \"%s\""), name); | |
3aec816f | 386 | return retval; |
0d4deba2 RY |
387 | } |
388 | ||
76f13234 | 389 | #if !defined HAVE_PREAD64 && !defined HAVE_PREAD |
f7134a9e | 390 | static ssize_t my_pread(int fd, void *buf, size_t count, off_t offset) |
ce600dc4 | 391 | { |
76f13234 DW |
392 | if (lseek(fd, offset, SEEK_SET) < 0) |
393 | return 0; | |
ce600dc4 | 394 | |
76f13234 DW |
395 | return read(fd, buf, count); |
396 | } | |
397 | #endif /* !defined HAVE_PREAD64 && !defined HAVE_PREAD */ | |
ce600dc4 | 398 | |
76f13234 DW |
399 | static errcode_t copy_file_range(ext2_filsys fs, int fd, ext2_file_t e2_file, |
400 | off_t start, off_t end, char *buf, | |
401 | char *zerobuf) | |
402 | { | |
403 | off_t off, bpos; | |
404 | ssize_t got, blen; | |
405 | unsigned int written; | |
406 | char *ptr; | |
407 | errcode_t err = 0; | |
408 | ||
409 | for (off = start; off < end; off += COPY_FILE_BUFLEN) { | |
410 | #ifdef HAVE_PREAD64 | |
411 | got = pread64(fd, buf, COPY_FILE_BUFLEN, off); | |
412 | #elif HAVE_PREAD | |
413 | got = pread(fd, buf, COPY_FILE_BUFLEN, off); | |
414 | #else | |
415 | got = my_pread(fd, buf, COPY_FILE_BUFLEN, off); | |
416 | #endif | |
ce600dc4 | 417 | if (got < 0) { |
76f13234 | 418 | err = errno; |
ce600dc4 RY |
419 | goto fail; |
420 | } | |
76f13234 DW |
421 | for (bpos = 0, ptr = buf; bpos < got; bpos += fs->blocksize) { |
422 | blen = fs->blocksize; | |
423 | if (blen > got - bpos) | |
424 | blen = got - bpos; | |
425 | if (memcmp(ptr, zerobuf, blen) == 0) { | |
426 | ptr += blen; | |
427 | continue; | |
428 | } | |
429 | err = ext2fs_file_lseek(e2_file, off + bpos, | |
430 | EXT2_SEEK_SET, NULL); | |
431 | if (err) | |
432 | goto fail; | |
433 | while (blen > 0) { | |
434 | err = ext2fs_file_write(e2_file, ptr, blen, | |
435 | &written); | |
436 | if (err) | |
437 | goto fail; | |
438 | if (written == 0) { | |
439 | err = EIO; | |
ce600dc4 | 440 | goto fail; |
76f13234 DW |
441 | } |
442 | blen -= written; | |
443 | ptr += written; | |
ce600dc4 RY |
444 | } |
445 | } | |
76f13234 DW |
446 | } |
447 | fail: | |
448 | return err; | |
449 | } | |
ce600dc4 | 450 | |
478360f5 | 451 | #if defined(SEEK_DATA) && defined(SEEK_HOLE) |
76f13234 DW |
452 | static errcode_t try_lseek_copy(ext2_filsys fs, int fd, struct stat *statbuf, |
453 | ext2_file_t e2_file, char *buf, char *zerobuf) | |
454 | { | |
76f13234 DW |
455 | off_t data = 0, hole; |
456 | off_t data_blk, hole_blk; | |
c2c5c585 | 457 | errcode_t err = 0; |
76f13234 DW |
458 | |
459 | /* Try to use SEEK_DATA and SEEK_HOLE */ | |
460 | while (data < statbuf->st_size) { | |
461 | data = lseek(fd, data, SEEK_DATA); | |
462 | if (data < 0) { | |
463 | if (errno == ENXIO) | |
464 | break; | |
465 | return EXT2_ET_UNIMPLEMENTED; | |
ce600dc4 | 466 | } |
76f13234 DW |
467 | hole = lseek(fd, data, SEEK_HOLE); |
468 | if (hole < 0) | |
469 | return EXT2_ET_UNIMPLEMENTED; | |
470 | ||
471 | data_blk = data & ~(fs->blocksize - 1); | |
472 | hole_blk = (hole + (fs->blocksize - 1)) & ~(fs->blocksize - 1); | |
473 | err = copy_file_range(fs, fd, e2_file, data_blk, hole_blk, buf, | |
474 | zerobuf); | |
475 | if (err) | |
476 | return err; | |
477 | ||
478 | data = hole; | |
ce600dc4 | 479 | } |
ce600dc4 | 480 | |
76f13234 | 481 | return err; |
76f13234 | 482 | } |
478360f5 | 483 | #endif /* SEEK_DATA and SEEK_HOLE */ |
76f13234 | 484 | |
478360f5 | 485 | #if defined(FS_IOC_FIEMAP) |
76f13234 DW |
486 | static errcode_t try_fiemap_copy(ext2_filsys fs, int fd, ext2_file_t e2_file, |
487 | char *buf, char *zerobuf) | |
488 | { | |
76f13234 DW |
489 | #define EXTENT_MAX_COUNT 512 |
490 | struct fiemap *fiemap_buf; | |
491 | struct fiemap_extent *ext_buf, *ext; | |
492 | int ext_buf_size, fie_buf_size; | |
493 | off_t pos = 0; | |
494 | unsigned int i; | |
495 | errcode_t err; | |
496 | ||
497 | ext_buf_size = EXTENT_MAX_COUNT * sizeof(struct fiemap_extent); | |
498 | fie_buf_size = sizeof(struct fiemap) + ext_buf_size; | |
499 | ||
500 | err = ext2fs_get_memzero(fie_buf_size, &fiemap_buf); | |
501 | if (err) | |
502 | return err; | |
503 | ||
504 | ext_buf = fiemap_buf->fm_extents; | |
505 | memset(fiemap_buf, 0, fie_buf_size); | |
506 | fiemap_buf->fm_length = FIEMAP_MAX_OFFSET; | |
507 | fiemap_buf->fm_flags |= FIEMAP_FLAG_SYNC; | |
508 | fiemap_buf->fm_extent_count = EXTENT_MAX_COUNT; | |
509 | ||
510 | do { | |
511 | fiemap_buf->fm_start = pos; | |
512 | memset(ext_buf, 0, ext_buf_size); | |
513 | err = ioctl(fd, FS_IOC_FIEMAP, fiemap_buf); | |
514 | if (err < 0 && (errno == EOPNOTSUPP || errno == ENOTTY)) { | |
515 | err = EXT2_ET_UNIMPLEMENTED; | |
516 | goto out; | |
75a79045 | 517 | } else if (err < 0) { |
76f13234 DW |
518 | err = errno; |
519 | goto out; | |
75a79045 AB |
520 | } else if (fiemap_buf->fm_mapped_extents == 0) |
521 | goto out; | |
76f13234 DW |
522 | for (i = 0, ext = ext_buf; i < fiemap_buf->fm_mapped_extents; |
523 | i++, ext++) { | |
524 | err = copy_file_range(fs, fd, e2_file, ext->fe_logical, | |
525 | ext->fe_logical + ext->fe_length, | |
526 | buf, zerobuf); | |
527 | if (err) | |
528 | goto out; | |
529 | } | |
530 | ||
531 | ext--; | |
532 | /* Record file's logical offset this time */ | |
533 | pos = ext->fe_logical + ext->fe_length; | |
534 | /* | |
535 | * If fm_extents array has been filled and | |
536 | * there are extents left, continue to cycle. | |
537 | */ | |
538 | } while (fiemap_buf->fm_mapped_extents == EXTENT_MAX_COUNT && | |
539 | !(ext->fe_flags & FIEMAP_EXTENT_LAST)); | |
540 | out: | |
541 | ext2fs_free_mem(&fiemap_buf); | |
542 | return err; | |
76f13234 | 543 | } |
478360f5 | 544 | #endif /* FS_IOC_FIEMAP */ |
76f13234 DW |
545 | |
546 | static errcode_t copy_file(ext2_filsys fs, int fd, struct stat *statbuf, | |
547 | ext2_ino_t ino) | |
548 | { | |
549 | ext2_file_t e2_file; | |
550 | char *buf = NULL, *zerobuf = NULL; | |
551 | errcode_t err, close_err; | |
552 | ||
553 | err = ext2fs_file_open(fs, ino, EXT2_FILE_WRITE, &e2_file); | |
554 | if (err) | |
555 | return err; | |
556 | ||
557 | err = ext2fs_get_mem(COPY_FILE_BUFLEN, &buf); | |
558 | if (err) | |
559 | goto out; | |
560 | ||
561 | err = ext2fs_get_memzero(fs->blocksize, &zerobuf); | |
562 | if (err) | |
563 | goto out; | |
564 | ||
478360f5 | 565 | #if defined(SEEK_DATA) && defined(SEEK_HOLE) |
76f13234 DW |
566 | err = try_lseek_copy(fs, fd, statbuf, e2_file, buf, zerobuf); |
567 | if (err != EXT2_ET_UNIMPLEMENTED) | |
568 | goto out; | |
478360f5 | 569 | #endif |
76f13234 | 570 | |
478360f5 | 571 | #if defined(FS_IOC_FIEMAP) |
76f13234 DW |
572 | err = try_fiemap_copy(fs, fd, e2_file, buf, zerobuf); |
573 | if (err != EXT2_ET_UNIMPLEMENTED) | |
574 | goto out; | |
478360f5 | 575 | #endif |
76f13234 DW |
576 | |
577 | err = copy_file_range(fs, fd, e2_file, 0, statbuf->st_size, buf, | |
578 | zerobuf); | |
579 | out: | |
580 | ext2fs_free_mem(&zerobuf); | |
6bb88459 | 581 | ext2fs_free_mem(&buf); |
76f13234 DW |
582 | close_err = ext2fs_file_close(e2_file); |
583 | if (err == 0) | |
584 | err = close_err; | |
585 | return err; | |
ce600dc4 RY |
586 | } |
587 | ||
b99888a0 | 588 | static int is_hardlink(struct hdlinks_s *hdlinks, dev_t dev, ino_t ino) |
f84894bc RY |
589 | { |
590 | int i; | |
591 | ||
b99888a0 DW |
592 | for (i = 0; i < hdlinks->count; i++) { |
593 | if (hdlinks->hdl[i].src_dev == dev && | |
594 | hdlinks->hdl[i].src_ino == ino) | |
f84894bc RY |
595 | return i; |
596 | } | |
597 | return -1; | |
598 | } | |
599 | ||
0d4deba2 | 600 | /* Copy the native file to the fs */ |
a3111e80 DW |
601 | errcode_t do_write_internal(ext2_filsys fs, ext2_ino_t cwd, const char *src, |
602 | const char *dest, ext2_ino_t root) | |
0d4deba2 | 603 | { |
ce600dc4 RY |
604 | int fd; |
605 | struct stat statbuf; | |
606 | ext2_ino_t newfile; | |
607 | errcode_t retval; | |
608 | struct ext2_inode inode; | |
ce600dc4 | 609 | |
ec3a42b1 | 610 | fd = ext2fs_open_file(src, O_RDONLY, 0); |
ce600dc4 | 611 | if (fd < 0) { |
b04af4fe DW |
612 | retval = errno; |
613 | com_err(__func__, retval, _("while opening \"%s\" to copy"), | |
614 | src); | |
615 | return retval; | |
ce600dc4 RY |
616 | } |
617 | if (fstat(fd, &statbuf) < 0) { | |
b04af4fe DW |
618 | retval = errno; |
619 | goto out; | |
ce600dc4 RY |
620 | } |
621 | ||
a3111e80 | 622 | retval = ext2fs_namei(fs, root, cwd, dest, &newfile); |
ce600dc4 | 623 | if (retval == 0) { |
b04af4fe DW |
624 | retval = EXT2_ET_FILE_EXISTS; |
625 | goto out; | |
ce600dc4 RY |
626 | } |
627 | ||
a3111e80 | 628 | retval = ext2fs_new_inode(fs, cwd, 010755, 0, &newfile); |
b04af4fe DW |
629 | if (retval) |
630 | goto out; | |
ce600dc4 RY |
631 | #ifdef DEBUGFS |
632 | printf("Allocated inode: %u\n", newfile); | |
633 | #endif | |
a3111e80 | 634 | retval = ext2fs_link(fs, cwd, dest, newfile, |
ce600dc4 RY |
635 | EXT2_FT_REG_FILE); |
636 | if (retval == EXT2_ET_DIR_NO_SPACE) { | |
a3111e80 | 637 | retval = ext2fs_expand_dir(fs, cwd); |
b04af4fe DW |
638 | if (retval) |
639 | goto out; | |
a3111e80 | 640 | retval = ext2fs_link(fs, cwd, dest, newfile, |
ce600dc4 RY |
641 | EXT2_FT_REG_FILE); |
642 | } | |
b04af4fe DW |
643 | if (retval) |
644 | goto out; | |
a3111e80 | 645 | if (ext2fs_test_inode_bitmap2(fs->inode_map, newfile)) |
ce600dc4 | 646 | com_err(__func__, 0, "Warning: inode already set"); |
a3111e80 | 647 | ext2fs_inode_alloc_stats2(fs, newfile, +1, 0); |
ce600dc4 RY |
648 | memset(&inode, 0, sizeof(inode)); |
649 | inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG; | |
650 | inode.i_atime = inode.i_ctime = inode.i_mtime = | |
a3111e80 | 651 | fs->now ? fs->now : time(0); |
ce600dc4 | 652 | inode.i_links_count = 1; |
22302aa3 | 653 | retval = ext2fs_inode_size_set(fs, &inode, statbuf.st_size); |
b04af4fe DW |
654 | if (retval) |
655 | goto out; | |
7889640d | 656 | if (ext2fs_has_feature_inline_data(fs->super)) { |
d23b1965 | 657 | inode.i_flags |= EXT4_INLINE_DATA_FL; |
7889640d | 658 | } else if (ext2fs_has_feature_extents(fs->super)) { |
3548bb64 DW |
659 | ext2_extent_handle_t handle; |
660 | ||
661 | inode.i_flags &= ~EXT4_EXTENTS_FL; | |
662 | retval = ext2fs_extent_open2(fs, newfile, &inode, &handle); | |
663 | if (retval) | |
b04af4fe | 664 | goto out; |
3548bb64 | 665 | ext2fs_extent_free(handle); |
ce600dc4 RY |
666 | } |
667 | ||
a3111e80 | 668 | retval = ext2fs_write_new_inode(fs, newfile, &inode); |
b04af4fe DW |
669 | if (retval) |
670 | goto out; | |
d23b1965 | 671 | if (inode.i_flags & EXT4_INLINE_DATA_FL) { |
a3111e80 | 672 | retval = ext2fs_inline_data_init(fs, newfile); |
b04af4fe DW |
673 | if (retval) |
674 | goto out; | |
d23b1965 | 675 | } |
ce600dc4 | 676 | if (LINUX_S_ISREG(inode.i_mode)) { |
76f13234 | 677 | retval = copy_file(fs, fd, &statbuf, newfile); |
ce600dc4 | 678 | if (retval) |
b04af4fe | 679 | goto out; |
ce600dc4 | 680 | } |
b04af4fe | 681 | out: |
ce600dc4 | 682 | close(fd); |
117b54c3 | 683 | return retval; |
0d4deba2 RY |
684 | } |
685 | ||
686 | /* Copy files from source_dir to fs */ | |
b99888a0 DW |
687 | static errcode_t __populate_fs(ext2_filsys fs, ext2_ino_t parent_ino, |
688 | const char *source_dir, ext2_ino_t root, | |
689 | struct hdlinks_s *hdlinks) | |
0d4deba2 | 690 | { |
052064b9 RY |
691 | const char *name; |
692 | DIR *dh; | |
693 | struct dirent *dent; | |
694 | struct stat st; | |
d0e855fa | 695 | char *ln_target = NULL; |
f84894bc | 696 | unsigned int save_inode; |
052064b9 | 697 | ext2_ino_t ino; |
1bad6f46 | 698 | errcode_t retval = 0; |
052064b9 | 699 | int read_cnt; |
f84894bc | 700 | int hdlink; |
052064b9 | 701 | |
052064b9 | 702 | if (chdir(source_dir) < 0) { |
b04af4fe DW |
703 | retval = errno; |
704 | com_err(__func__, retval, | |
9c891f7e DW |
705 | _("while changing working directory to \"%s\""), |
706 | source_dir); | |
b04af4fe | 707 | return retval; |
052064b9 RY |
708 | } |
709 | ||
710 | if (!(dh = opendir("."))) { | |
b04af4fe DW |
711 | retval = errno; |
712 | com_err(__func__, retval, | |
8f8d8a57 | 713 | _("while opening directory \"%s\""), source_dir); |
b04af4fe | 714 | return retval; |
052064b9 RY |
715 | } |
716 | ||
8f8d8a57 | 717 | while ((dent = readdir(dh))) { |
9c891f7e DW |
718 | if ((!strcmp(dent->d_name, ".")) || |
719 | (!strcmp(dent->d_name, ".."))) | |
052064b9 | 720 | continue; |
1bad6f46 | 721 | if (lstat(dent->d_name, &st)) { |
b04af4fe DW |
722 | retval = errno; |
723 | com_err(__func__, retval, _("while lstat \"%s\""), | |
1bad6f46 DW |
724 | dent->d_name); |
725 | goto out; | |
726 | } | |
052064b9 RY |
727 | name = dent->d_name; |
728 | ||
f84894bc RY |
729 | /* Check for hardlinks */ |
730 | save_inode = 0; | |
9c891f7e DW |
731 | if (!S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode) && |
732 | st.st_nlink > 1) { | |
b99888a0 | 733 | hdlink = is_hardlink(hdlinks, st.st_dev, st.st_ino); |
f84894bc | 734 | if (hdlink >= 0) { |
a3111e80 | 735 | retval = add_link(fs, parent_ino, |
b99888a0 | 736 | hdlinks->hdl[hdlink].dst_ino, |
9c891f7e | 737 | name); |
f84894bc | 738 | if (retval) { |
9c891f7e DW |
739 | com_err(__func__, retval, |
740 | "while linking %s", name); | |
1bad6f46 | 741 | goto out; |
f84894bc RY |
742 | } |
743 | continue; | |
744 | } else | |
745 | save_inode = 1; | |
746 | } | |
747 | ||
052064b9 | 748 | switch(st.st_mode & S_IFMT) { |
9c891f7e DW |
749 | case S_IFCHR: |
750 | case S_IFBLK: | |
751 | case S_IFIFO: | |
c61e0068 | 752 | case S_IFSOCK: |
a3111e80 | 753 | retval = do_mknod_internal(fs, parent_ino, name, &st); |
9c891f7e DW |
754 | if (retval) { |
755 | com_err(__func__, retval, | |
756 | _("while creating special file " | |
757 | "\"%s\""), name); | |
1bad6f46 | 758 | goto out; |
9c891f7e DW |
759 | } |
760 | break; | |
9c891f7e | 761 | case S_IFLNK: |
d0e855fa TT |
762 | ln_target = malloc(st.st_size + 1); |
763 | if (ln_target == NULL) { | |
764 | com_err(__func__, retval, | |
765 | _("malloc failed")); | |
766 | goto out; | |
767 | } | |
9c891f7e | 768 | read_cnt = readlink(name, ln_target, |
d0e855fa | 769 | st.st_size + 1); |
9c891f7e | 770 | if (read_cnt == -1) { |
ec3a42b1 | 771 | retval = errno; |
b04af4fe DW |
772 | com_err(__func__, retval, |
773 | _("while trying to read link \"%s\""), | |
774 | name); | |
051fd4e0 | 775 | free(ln_target); |
ec3a42b1 | 776 | goto out; |
9c891f7e | 777 | } |
d0e855fa TT |
778 | if (read_cnt > st.st_size) { |
779 | com_err(__func__, retval, | |
780 | _("symlink increased in size " | |
781 | "between lstat() and readlink()")); | |
782 | free(ln_target); | |
783 | goto out; | |
784 | } | |
9c891f7e | 785 | ln_target[read_cnt] = '\0'; |
a3111e80 DW |
786 | retval = do_symlink_internal(fs, parent_ino, name, |
787 | ln_target, root); | |
d0e855fa | 788 | free(ln_target); |
9c891f7e DW |
789 | if (retval) { |
790 | com_err(__func__, retval, | |
791 | _("while writing symlink\"%s\""), | |
792 | name); | |
1bad6f46 | 793 | goto out; |
9c891f7e DW |
794 | } |
795 | break; | |
796 | case S_IFREG: | |
a3111e80 DW |
797 | retval = do_write_internal(fs, parent_ino, name, name, |
798 | root); | |
9c891f7e DW |
799 | if (retval) { |
800 | com_err(__func__, retval, | |
801 | _("while writing file \"%s\""), name); | |
1bad6f46 | 802 | goto out; |
9c891f7e DW |
803 | } |
804 | break; | |
805 | case S_IFDIR: | |
b04af4fe DW |
806 | /* Don't choke on /lost+found */ |
807 | if (parent_ino == EXT2_ROOT_INO && | |
808 | strcmp(name, "lost+found") == 0) | |
809 | goto find_lnf; | |
25f291c9 | 810 | retval = do_mkdir_internal(fs, parent_ino, name, |
a3111e80 | 811 | root); |
9c891f7e DW |
812 | if (retval) { |
813 | com_err(__func__, retval, | |
814 | _("while making dir \"%s\""), name); | |
1bad6f46 | 815 | goto out; |
9c891f7e | 816 | } |
b04af4fe | 817 | find_lnf: |
a3111e80 | 818 | retval = ext2fs_namei(fs, root, parent_ino, |
9c891f7e DW |
819 | name, &ino); |
820 | if (retval) { | |
821 | com_err(name, retval, 0); | |
1bad6f46 | 822 | goto out; |
9c891f7e DW |
823 | } |
824 | /* Populate the dir recursively*/ | |
b99888a0 | 825 | retval = __populate_fs(fs, ino, name, root, hdlinks); |
b04af4fe | 826 | if (retval) |
1bad6f46 | 827 | goto out; |
a3111e80 | 828 | if (chdir("..")) { |
1bad6f46 | 829 | retval = errno; |
b04af4fe DW |
830 | com_err(__func__, retval, |
831 | _("while changing directory")); | |
1bad6f46 | 832 | goto out; |
a3111e80 | 833 | } |
9c891f7e DW |
834 | break; |
835 | default: | |
836 | com_err(__func__, 0, | |
837 | _("ignoring entry \"%s\""), name); | |
052064b9 | 838 | } |
b6960654 | 839 | |
a3111e80 | 840 | retval = ext2fs_namei(fs, root, parent_ino, name, &ino); |
8f8d8a57 | 841 | if (retval) { |
b04af4fe DW |
842 | com_err(name, retval, _("while looking up \"%s\""), |
843 | name); | |
1bad6f46 | 844 | goto out; |
b6960654 RY |
845 | } |
846 | ||
25f291c9 | 847 | retval = set_inode_extra(fs, ino, &st); |
8f8d8a57 | 848 | if (retval) { |
b6960654 RY |
849 | com_err(__func__, retval, |
850 | _("while setting inode for \"%s\""), name); | |
1bad6f46 | 851 | goto out; |
b6960654 | 852 | } |
f84894bc | 853 | |
c84da2ee RB |
854 | retval = set_inode_xattr(fs, ino, name); |
855 | if (retval) { | |
856 | com_err(__func__, retval, | |
857 | _("while setting xattrs for \"%s\""), name); | |
858 | goto out; | |
859 | } | |
860 | ||
f84894bc RY |
861 | /* Save the hardlink ino */ |
862 | if (save_inode) { | |
863 | /* | |
864 | * Check whether need more memory, and we don't need | |
865 | * free() since the lifespan will be over after the fs | |
866 | * populated. | |
867 | */ | |
b99888a0 DW |
868 | if (hdlinks->count == hdlinks->size) { |
869 | void *p = realloc(hdlinks->hdl, | |
870 | (hdlinks->size + HDLINK_CNT) * | |
871 | sizeof(struct hdlink_s)); | |
872 | if (p == NULL) { | |
1bad6f46 | 873 | retval = EXT2_ET_NO_MEMORY; |
b04af4fe DW |
874 | com_err(name, retval, |
875 | _("while saving inode data")); | |
1bad6f46 | 876 | goto out; |
f84894bc | 877 | } |
b99888a0 DW |
878 | hdlinks->hdl = p; |
879 | hdlinks->size += HDLINK_CNT; | |
f84894bc | 880 | } |
b99888a0 DW |
881 | hdlinks->hdl[hdlinks->count].src_dev = st.st_dev; |
882 | hdlinks->hdl[hdlinks->count].src_ino = st.st_ino; | |
883 | hdlinks->hdl[hdlinks->count].dst_ino = ino; | |
884 | hdlinks->count++; | |
f84894bc | 885 | } |
052064b9 | 886 | } |
1bad6f46 DW |
887 | |
888 | out: | |
052064b9 RY |
889 | closedir(dh); |
890 | return retval; | |
0d4deba2 | 891 | } |
b99888a0 DW |
892 | |
893 | errcode_t populate_fs(ext2_filsys fs, ext2_ino_t parent_ino, | |
894 | const char *source_dir, ext2_ino_t root) | |
895 | { | |
896 | struct hdlinks_s hdlinks; | |
897 | errcode_t retval; | |
898 | ||
b04af4fe DW |
899 | if (!(fs->flags & EXT2_FLAG_RW)) { |
900 | com_err(__func__, 0, "Filesystem opened readonly"); | |
901 | return EROFS; | |
902 | } | |
903 | ||
b99888a0 DW |
904 | hdlinks.count = 0; |
905 | hdlinks.size = HDLINK_CNT; | |
906 | hdlinks.hdl = realloc(NULL, hdlinks.size * sizeof(struct hdlink_s)); | |
907 | if (hdlinks.hdl == NULL) { | |
b04af4fe DW |
908 | retval = errno; |
909 | com_err(__func__, retval, _("while allocating memory")); | |
910 | return retval; | |
b99888a0 DW |
911 | } |
912 | ||
913 | retval = __populate_fs(fs, parent_ino, source_dir, root, &hdlinks); | |
914 | ||
915 | free(hdlinks.hdl); | |
916 | return retval; | |
917 | } |