Commit | Line | Data |
---|---|---|
237fead6 MH |
1 | /** |
2 | * eCryptfs: Linux filesystem encryption layer | |
3 | * This is where eCryptfs coordinates the symmetric encryption and | |
4 | * decryption of the file data as it passes between the lower | |
5 | * encrypted file and the upper decrypted file. | |
6 | * | |
7 | * Copyright (C) 1997-2003 Erez Zadok | |
8 | * Copyright (C) 2001-2003 Stony Brook University | |
dd2a3b7a | 9 | * Copyright (C) 2004-2007 International Business Machines Corp. |
237fead6 MH |
10 | * Author(s): Michael A. Halcrow <mahalcro@us.ibm.com> |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of the | |
15 | * License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
25 | * 02111-1307, USA. | |
26 | */ | |
27 | ||
28 | #include <linux/pagemap.h> | |
29 | #include <linux/writeback.h> | |
30 | #include <linux/page-flags.h> | |
31 | #include <linux/mount.h> | |
32 | #include <linux/file.h> | |
33 | #include <linux/crypto.h> | |
34 | #include <linux/scatterlist.h> | |
35 | #include "ecryptfs_kernel.h" | |
36 | ||
237fead6 | 37 | /** |
16a72c45 | 38 | * ecryptfs_get_locked_page |
237fead6 MH |
39 | * |
40 | * Get one page from cache or lower f/s, return error otherwise. | |
41 | * | |
16a72c45 | 42 | * Returns locked and up-to-date page (if ok), with increased |
237fead6 MH |
43 | * refcnt. |
44 | */ | |
16a72c45 | 45 | struct page *ecryptfs_get_locked_page(struct file *file, loff_t index) |
237fead6 | 46 | { |
237fead6 MH |
47 | struct dentry *dentry; |
48 | struct inode *inode; | |
49 | struct address_space *mapping; | |
16a72c45 | 50 | struct page *page; |
237fead6 | 51 | |
bd243a4b | 52 | dentry = file->f_path.dentry; |
237fead6 MH |
53 | inode = dentry->d_inode; |
54 | mapping = inode->i_mapping; | |
16a72c45 MH |
55 | page = read_mapping_page(mapping, index, (void *)file); |
56 | if (!IS_ERR(page)) | |
57 | lock_page(page); | |
58 | return page; | |
237fead6 MH |
59 | } |
60 | ||
237fead6 MH |
61 | /** |
62 | * ecryptfs_writepage | |
63 | * @page: Page that is locked before this call is made | |
64 | * | |
65 | * Returns zero on success; non-zero otherwise | |
66 | */ | |
67 | static int ecryptfs_writepage(struct page *page, struct writeback_control *wbc) | |
68 | { | |
237fead6 MH |
69 | int rc; |
70 | ||
0216f7f7 | 71 | rc = ecryptfs_encrypt_page(page); |
237fead6 MH |
72 | if (rc) { |
73 | ecryptfs_printk(KERN_WARNING, "Error encrypting " | |
74 | "page (upper index [0x%.16x])\n", page->index); | |
75 | ClearPageUptodate(page); | |
76 | goto out; | |
77 | } | |
78 | SetPageUptodate(page); | |
79 | unlock_page(page); | |
80 | out: | |
81 | return rc; | |
82 | } | |
83 | ||
e77a56dd MH |
84 | /** |
85 | * Header Extent: | |
86 | * Octets 0-7: Unencrypted file size (big-endian) | |
87 | * Octets 8-15: eCryptfs special marker | |
88 | * Octets 16-19: Flags | |
89 | * Octet 16: File format version number (between 0 and 255) | |
90 | * Octets 17-18: Reserved | |
91 | * Octet 19: Bit 1 (lsb): Reserved | |
92 | * Bit 2: Encrypted? | |
93 | * Bits 3-8: Reserved | |
94 | * Octets 20-23: Header extent size (big-endian) | |
95 | * Octets 24-25: Number of header extents at front of file | |
96 | * (big-endian) | |
97 | * Octet 26: Begin RFC 2440 authentication token packet set | |
98 | */ | |
99 | static void set_header_info(char *page_virt, | |
100 | struct ecryptfs_crypt_stat *crypt_stat) | |
101 | { | |
102 | size_t written; | |
cc11beff MH |
103 | size_t save_num_header_bytes_at_front = |
104 | crypt_stat->num_header_bytes_at_front; | |
e77a56dd | 105 | |
cc11beff MH |
106 | crypt_stat->num_header_bytes_at_front = |
107 | ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; | |
e77a56dd | 108 | ecryptfs_write_header_metadata(page_virt + 20, crypt_stat, &written); |
cc11beff MH |
109 | crypt_stat->num_header_bytes_at_front = |
110 | save_num_header_bytes_at_front; | |
e77a56dd | 111 | } |
237fead6 | 112 | |
bf12be1c MH |
113 | /** |
114 | * ecryptfs_copy_up_encrypted_with_header | |
115 | * @page: Sort of a ``virtual'' representation of the encrypted lower | |
116 | * file. The actual lower file does not have the metadata in | |
117 | * the header. This is locked. | |
118 | * @crypt_stat: The eCryptfs inode's cryptographic context | |
119 | * | |
120 | * The ``view'' is the version of the file that userspace winds up | |
121 | * seeing, with the header information inserted. | |
122 | */ | |
123 | static int | |
124 | ecryptfs_copy_up_encrypted_with_header(struct page *page, | |
125 | struct ecryptfs_crypt_stat *crypt_stat) | |
126 | { | |
127 | loff_t extent_num_in_page = 0; | |
128 | loff_t num_extents_per_page = (PAGE_CACHE_SIZE | |
129 | / crypt_stat->extent_size); | |
130 | int rc = 0; | |
131 | ||
132 | while (extent_num_in_page < num_extents_per_page) { | |
d6a13c17 MH |
133 | loff_t view_extent_num = ((((loff_t)page->index) |
134 | * num_extents_per_page) | |
bf12be1c | 135 | + extent_num_in_page); |
cc11beff MH |
136 | size_t num_header_extents_at_front = |
137 | (crypt_stat->num_header_bytes_at_front | |
138 | / crypt_stat->extent_size); | |
bf12be1c | 139 | |
cc11beff | 140 | if (view_extent_num < num_header_extents_at_front) { |
bf12be1c MH |
141 | /* This is a header extent */ |
142 | char *page_virt; | |
143 | ||
144 | page_virt = kmap_atomic(page, KM_USER0); | |
145 | memset(page_virt, 0, PAGE_CACHE_SIZE); | |
146 | /* TODO: Support more than one header extent */ | |
147 | if (view_extent_num == 0) { | |
148 | rc = ecryptfs_read_xattr_region( | |
149 | page_virt, page->mapping->host); | |
150 | set_header_info(page_virt, crypt_stat); | |
151 | } | |
152 | kunmap_atomic(page_virt, KM_USER0); | |
153 | flush_dcache_page(page); | |
154 | if (rc) { | |
bf12be1c MH |
155 | printk(KERN_ERR "%s: Error reading xattr " |
156 | "region; rc = [%d]\n", __FUNCTION__, rc); | |
157 | goto out; | |
158 | } | |
bf12be1c MH |
159 | } else { |
160 | /* This is an encrypted data extent */ | |
161 | loff_t lower_offset = | |
cc11beff MH |
162 | ((view_extent_num * crypt_stat->extent_size) |
163 | - crypt_stat->num_header_bytes_at_front); | |
bf12be1c MH |
164 | |
165 | rc = ecryptfs_read_lower_page_segment( | |
166 | page, (lower_offset >> PAGE_CACHE_SHIFT), | |
167 | (lower_offset & ~PAGE_CACHE_MASK), | |
168 | crypt_stat->extent_size, page->mapping->host); | |
169 | if (rc) { | |
170 | printk(KERN_ERR "%s: Error attempting to read " | |
171 | "extent at offset [%lld] in the lower " | |
172 | "file; rc = [%d]\n", __FUNCTION__, | |
173 | lower_offset, rc); | |
174 | goto out; | |
175 | } | |
176 | } | |
177 | extent_num_in_page++; | |
178 | } | |
179 | out: | |
180 | return rc; | |
181 | } | |
182 | ||
237fead6 MH |
183 | /** |
184 | * ecryptfs_readpage | |
bf12be1c MH |
185 | * @file: An eCryptfs file |
186 | * @page: Page from eCryptfs inode mapping into which to stick the read data | |
237fead6 MH |
187 | * |
188 | * Read in a page, decrypting if necessary. | |
189 | * | |
190 | * Returns zero on success; non-zero on error. | |
191 | */ | |
192 | static int ecryptfs_readpage(struct file *file, struct page *page) | |
193 | { | |
bf12be1c MH |
194 | struct ecryptfs_crypt_stat *crypt_stat = |
195 | &ecryptfs_inode_to_private(file->f_path.dentry->d_inode)->crypt_stat; | |
237fead6 | 196 | int rc = 0; |
237fead6 | 197 | |
237fead6 | 198 | if (!crypt_stat |
e2bd99ec MH |
199 | || !(crypt_stat->flags & ECRYPTFS_ENCRYPTED) |
200 | || (crypt_stat->flags & ECRYPTFS_NEW_FILE)) { | |
237fead6 MH |
201 | ecryptfs_printk(KERN_DEBUG, |
202 | "Passing through unencrypted page\n"); | |
bf12be1c MH |
203 | rc = ecryptfs_read_lower_page_segment(page, page->index, 0, |
204 | PAGE_CACHE_SIZE, | |
205 | page->mapping->host); | |
e77a56dd MH |
206 | } else if (crypt_stat->flags & ECRYPTFS_VIEW_AS_ENCRYPTED) { |
207 | if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) { | |
bf12be1c MH |
208 | rc = ecryptfs_copy_up_encrypted_with_header(page, |
209 | crypt_stat); | |
210 | if (rc) { | |
211 | printk(KERN_ERR "%s: Error attempting to copy " | |
212 | "the encrypted content from the lower " | |
213 | "file whilst inserting the metadata " | |
214 | "from the xattr into the header; rc = " | |
215 | "[%d]\n", __FUNCTION__, rc); | |
216 | goto out; | |
e77a56dd | 217 | } |
bf12be1c | 218 | |
e77a56dd | 219 | } else { |
bf12be1c MH |
220 | rc = ecryptfs_read_lower_page_segment( |
221 | page, page->index, 0, PAGE_CACHE_SIZE, | |
222 | page->mapping->host); | |
e77a56dd MH |
223 | if (rc) { |
224 | printk(KERN_ERR "Error reading page; rc = " | |
225 | "[%d]\n", rc); | |
226 | goto out; | |
227 | } | |
228 | } | |
237fead6 | 229 | } else { |
0216f7f7 | 230 | rc = ecryptfs_decrypt_page(page); |
237fead6 | 231 | if (rc) { |
237fead6 MH |
232 | ecryptfs_printk(KERN_ERR, "Error decrypting page; " |
233 | "rc = [%d]\n", rc); | |
234 | goto out; | |
235 | } | |
236 | } | |
237fead6 | 237 | out: |
16a72c45 MH |
238 | if (rc) |
239 | ClearPageUptodate(page); | |
240 | else | |
241 | SetPageUptodate(page); | |
237fead6 MH |
242 | ecryptfs_printk(KERN_DEBUG, "Unlocking page with index = [0x%.16x]\n", |
243 | page->index); | |
244 | unlock_page(page); | |
245 | return rc; | |
246 | } | |
247 | ||
dd2a3b7a MH |
248 | /** |
249 | * Called with lower inode mutex held. | |
250 | */ | |
237fead6 MH |
251 | static int fill_zeros_to_end_of_page(struct page *page, unsigned int to) |
252 | { | |
253 | struct inode *inode = page->mapping->host; | |
254 | int end_byte_in_page; | |
237fead6 | 255 | |
9d8b8ce5 MH |
256 | if ((i_size_read(inode) / PAGE_CACHE_SIZE) != page->index) |
257 | goto out; | |
258 | end_byte_in_page = i_size_read(inode) % PAGE_CACHE_SIZE; | |
259 | if (to > end_byte_in_page) | |
260 | end_byte_in_page = to; | |
eebd2aa3 | 261 | zero_user_segment(page, end_byte_in_page, PAGE_CACHE_SIZE); |
237fead6 | 262 | out: |
9d8b8ce5 | 263 | return 0; |
237fead6 MH |
264 | } |
265 | ||
7a3f595c | 266 | /* This function must zero any hole we create */ |
237fead6 MH |
267 | static int ecryptfs_prepare_write(struct file *file, struct page *page, |
268 | unsigned from, unsigned to) | |
269 | { | |
270 | int rc = 0; | |
7a3f595c | 271 | loff_t prev_page_end_size; |
237fead6 | 272 | |
16a72c45 | 273 | if (!PageUptodate(page)) { |
bf12be1c MH |
274 | rc = ecryptfs_read_lower_page_segment(page, page->index, 0, |
275 | PAGE_CACHE_SIZE, | |
276 | page->mapping->host); | |
16a72c45 MH |
277 | if (rc) { |
278 | printk(KERN_ERR "%s: Error attemping to read lower " | |
279 | "page segment; rc = [%d]\n", __FUNCTION__, rc); | |
280 | ClearPageUptodate(page); | |
281 | goto out; | |
282 | } else | |
283 | SetPageUptodate(page); | |
284 | } | |
240e2df5 | 285 | |
7a3f595c ES |
286 | prev_page_end_size = ((loff_t)page->index << PAGE_CACHE_SHIFT); |
287 | ||
288 | /* | |
289 | * If creating a page or more of holes, zero them out via truncate. | |
290 | * Note, this will increase i_size. | |
291 | */ | |
292 | if (page->index != 0) { | |
293 | if (prev_page_end_size > i_size_read(page->mapping->host)) { | |
240e2df5 | 294 | rc = ecryptfs_truncate(file->f_path.dentry, |
7a3f595c | 295 | prev_page_end_size); |
240e2df5 MH |
296 | if (rc) { |
297 | printk(KERN_ERR "Error on attempt to " | |
298 | "truncate to (higher) offset [%lld];" | |
7a3f595c | 299 | " rc = [%d]\n", prev_page_end_size, rc); |
240e2df5 MH |
300 | goto out; |
301 | } | |
53a2731f | 302 | } |
7a3f595c ES |
303 | } |
304 | /* | |
305 | * Writing to a new page, and creating a small hole from start of page? | |
306 | * Zero it out. | |
307 | */ | |
308 | if ((i_size_read(page->mapping->host) == prev_page_end_size) && | |
309 | (from != 0)) { | |
eebd2aa3 | 310 | zero_user(page, 0, PAGE_CACHE_SIZE); |
53a2731f | 311 | } |
237fead6 MH |
312 | out: |
313 | return rc; | |
314 | } | |
315 | ||
237fead6 MH |
316 | /** |
317 | * ecryptfs_write_inode_size_to_header | |
318 | * | |
319 | * Writes the lower file size to the first 8 bytes of the header. | |
320 | * | |
321 | * Returns zero on success; non-zero on error. | |
322 | */ | |
0216f7f7 | 323 | static int ecryptfs_write_inode_size_to_header(struct inode *ecryptfs_inode) |
237fead6 | 324 | { |
237fead6 | 325 | u64 file_size; |
0216f7f7 MH |
326 | char *file_size_virt; |
327 | int rc; | |
237fead6 | 328 | |
0216f7f7 MH |
329 | file_size_virt = kmalloc(sizeof(u64), GFP_KERNEL); |
330 | if (!file_size_virt) { | |
331 | rc = -ENOMEM; | |
ae73fc09 MH |
332 | goto out; |
333 | } | |
0216f7f7 | 334 | file_size = (u64)i_size_read(ecryptfs_inode); |
237fead6 | 335 | file_size = cpu_to_be64(file_size); |
0216f7f7 MH |
336 | memcpy(file_size_virt, &file_size, sizeof(u64)); |
337 | rc = ecryptfs_write_lower(ecryptfs_inode, file_size_virt, 0, | |
338 | sizeof(u64)); | |
339 | kfree(file_size_virt); | |
340 | if (rc) | |
341 | printk(KERN_ERR "%s: Error writing file size to header; " | |
342 | "rc = [%d]\n", __FUNCTION__, rc); | |
237fead6 MH |
343 | out: |
344 | return rc; | |
345 | } | |
346 | ||
0216f7f7 MH |
347 | struct kmem_cache *ecryptfs_xattr_cache; |
348 | ||
349 | static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode) | |
dd2a3b7a MH |
350 | { |
351 | ssize_t size; | |
352 | void *xattr_virt; | |
0216f7f7 MH |
353 | struct dentry *lower_dentry = |
354 | ecryptfs_inode_to_private(ecryptfs_inode)->lower_file->f_dentry; | |
355 | struct inode *lower_inode = lower_dentry->d_inode; | |
dd2a3b7a MH |
356 | u64 file_size; |
357 | int rc; | |
358 | ||
0216f7f7 MH |
359 | if (!lower_inode->i_op->getxattr || !lower_inode->i_op->setxattr) { |
360 | printk(KERN_WARNING | |
361 | "No support for setting xattr in lower filesystem\n"); | |
362 | rc = -ENOSYS; | |
363 | goto out; | |
364 | } | |
dd2a3b7a MH |
365 | xattr_virt = kmem_cache_alloc(ecryptfs_xattr_cache, GFP_KERNEL); |
366 | if (!xattr_virt) { | |
367 | printk(KERN_ERR "Out of memory whilst attempting to write " | |
368 | "inode size to xattr\n"); | |
369 | rc = -ENOMEM; | |
370 | goto out; | |
371 | } | |
0216f7f7 MH |
372 | mutex_lock(&lower_inode->i_mutex); |
373 | size = lower_inode->i_op->getxattr(lower_dentry, ECRYPTFS_XATTR_NAME, | |
374 | xattr_virt, PAGE_CACHE_SIZE); | |
dd2a3b7a MH |
375 | if (size < 0) |
376 | size = 8; | |
0216f7f7 | 377 | file_size = (u64)i_size_read(ecryptfs_inode); |
dd2a3b7a MH |
378 | file_size = cpu_to_be64(file_size); |
379 | memcpy(xattr_virt, &file_size, sizeof(u64)); | |
0216f7f7 MH |
380 | rc = lower_inode->i_op->setxattr(lower_dentry, ECRYPTFS_XATTR_NAME, |
381 | xattr_virt, size, 0); | |
382 | mutex_unlock(&lower_inode->i_mutex); | |
dd2a3b7a MH |
383 | if (rc) |
384 | printk(KERN_ERR "Error whilst attempting to write inode size " | |
385 | "to lower file xattr; rc = [%d]\n", rc); | |
386 | kmem_cache_free(ecryptfs_xattr_cache, xattr_virt); | |
387 | out: | |
388 | return rc; | |
389 | } | |
390 | ||
0216f7f7 | 391 | int ecryptfs_write_inode_size_to_metadata(struct inode *ecryptfs_inode) |
dd2a3b7a MH |
392 | { |
393 | struct ecryptfs_crypt_stat *crypt_stat; | |
394 | ||
0216f7f7 | 395 | crypt_stat = &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; |
dd2a3b7a | 396 | if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) |
0216f7f7 | 397 | return ecryptfs_write_inode_size_to_xattr(ecryptfs_inode); |
dd2a3b7a | 398 | else |
0216f7f7 | 399 | return ecryptfs_write_inode_size_to_header(ecryptfs_inode); |
dd2a3b7a MH |
400 | } |
401 | ||
237fead6 MH |
402 | /** |
403 | * ecryptfs_commit_write | |
404 | * @file: The eCryptfs file object | |
405 | * @page: The eCryptfs page | |
406 | * @from: Ignored (we rotate the page IV on each write) | |
407 | * @to: Ignored | |
408 | * | |
409 | * This is where we encrypt the data and pass the encrypted data to | |
410 | * the lower filesystem. In OpenPGP-compatible mode, we operate on | |
411 | * entire underlying packets. | |
412 | */ | |
413 | static int ecryptfs_commit_write(struct file *file, struct page *page, | |
414 | unsigned from, unsigned to) | |
415 | { | |
237fead6 | 416 | loff_t pos; |
bf12be1c MH |
417 | struct inode *ecryptfs_inode = page->mapping->host; |
418 | struct ecryptfs_crypt_stat *crypt_stat = | |
419 | &ecryptfs_inode_to_private(file->f_path.dentry->d_inode)->crypt_stat; | |
237fead6 MH |
420 | int rc; |
421 | ||
e2bd99ec | 422 | if (crypt_stat->flags & ECRYPTFS_NEW_FILE) { |
237fead6 MH |
423 | ecryptfs_printk(KERN_DEBUG, "ECRYPTFS_NEW_FILE flag set in " |
424 | "crypt_stat at memory location [%p]\n", crypt_stat); | |
e2bd99ec | 425 | crypt_stat->flags &= ~(ECRYPTFS_NEW_FILE); |
237fead6 MH |
426 | } else |
427 | ecryptfs_printk(KERN_DEBUG, "Not a new file\n"); | |
428 | ecryptfs_printk(KERN_DEBUG, "Calling fill_zeros_to_end_of_page" | |
429 | "(page w/ index = [0x%.16x], to = [%d])\n", page->index, | |
430 | to); | |
bf12be1c | 431 | /* Fills in zeros if 'to' goes beyond inode size */ |
237fead6 MH |
432 | rc = fill_zeros_to_end_of_page(page, to); |
433 | if (rc) { | |
434 | ecryptfs_printk(KERN_WARNING, "Error attempting to fill " | |
435 | "zeros in page with index = [0x%.16x]\n", | |
436 | page->index); | |
437 | goto out; | |
438 | } | |
0216f7f7 | 439 | rc = ecryptfs_encrypt_page(page); |
237fead6 MH |
440 | if (rc) { |
441 | ecryptfs_printk(KERN_WARNING, "Error encrypting page (upper " | |
442 | "index [0x%.16x])\n", page->index); | |
443 | goto out; | |
444 | } | |
d6a13c17 | 445 | pos = (((loff_t)page->index) << PAGE_CACHE_SHIFT) + to; |
bf12be1c MH |
446 | if (pos > i_size_read(ecryptfs_inode)) { |
447 | i_size_write(ecryptfs_inode, pos); | |
237fead6 | 448 | ecryptfs_printk(KERN_DEBUG, "Expanded file size to " |
bf12be1c | 449 | "[0x%.16x]\n", i_size_read(ecryptfs_inode)); |
237fead6 | 450 | } |
bf12be1c | 451 | rc = ecryptfs_write_inode_size_to_metadata(ecryptfs_inode); |
dd2a3b7a MH |
452 | if (rc) |
453 | printk(KERN_ERR "Error writing inode size to metadata; " | |
454 | "rc = [%d]\n", rc); | |
237fead6 | 455 | out: |
237fead6 MH |
456 | return rc; |
457 | } | |
458 | ||
237fead6 MH |
459 | static sector_t ecryptfs_bmap(struct address_space *mapping, sector_t block) |
460 | { | |
461 | int rc = 0; | |
462 | struct inode *inode; | |
463 | struct inode *lower_inode; | |
464 | ||
465 | inode = (struct inode *)mapping->host; | |
466 | lower_inode = ecryptfs_inode_to_lower(inode); | |
467 | if (lower_inode->i_mapping->a_ops->bmap) | |
468 | rc = lower_inode->i_mapping->a_ops->bmap(lower_inode->i_mapping, | |
469 | block); | |
470 | return rc; | |
471 | } | |
472 | ||
237fead6 MH |
473 | struct address_space_operations ecryptfs_aops = { |
474 | .writepage = ecryptfs_writepage, | |
475 | .readpage = ecryptfs_readpage, | |
476 | .prepare_write = ecryptfs_prepare_write, | |
477 | .commit_write = ecryptfs_commit_write, | |
478 | .bmap = ecryptfs_bmap, | |
237fead6 | 479 | }; |