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82cae269 KK |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * | |
4 | * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. | |
5 | * | |
6 | * | |
7 | * terminology | |
8 | * | |
9 | * cluster - allocation unit - 512,1K,2K,4K,...,2M | |
e8b8e97f KA |
10 | * vcn - virtual cluster number - Offset inside the file in clusters. |
11 | * vbo - virtual byte offset - Offset inside the file in bytes. | |
12 | * lcn - logical cluster number - 0 based cluster in clusters heap. | |
13 | * lbo - logical byte offset - Absolute position inside volume. | |
14 | * run - maps VCN to LCN - Stored in attributes in packed form. | |
15 | * attr - attribute segment - std/name/data etc records inside MFT. | |
16 | * mi - MFT inode - One MFT record(usually 1024 bytes or 4K), consists of attributes. | |
17 | * ni - NTFS inode - Extends linux inode. consists of one or more mft inodes. | |
18 | * index - unit inside directory - 2K, 4K, <=page size, does not depend on cluster size. | |
82cae269 KK |
19 | * |
20 | * WSL - Windows Subsystem for Linux | |
21 | * https://docs.microsoft.com/en-us/windows/wsl/file-permissions | |
22 | * It stores uid/gid/mode/dev in xattr | |
23 | * | |
bd6ae049 KK |
24 | * ntfs allows up to 2^64 clusters per volume. |
25 | * It means you should use 64 bits lcn to operate with ntfs. | |
26 | * Implementation of ntfs.sys uses only 32 bits lcn. | |
27 | * Default ntfs3 uses 32 bits lcn too. | |
28 | * ntfs3 built with CONFIG_NTFS3_64BIT_CLUSTER (ntfs3_64) uses 64 bits per lcn. | |
29 | * | |
30 | * | |
31 | * ntfs limits, cluster size is 4K (2^12) | |
32 | * ----------------------------------------------------------------------------- | |
33 | * | Volume size | Clusters | ntfs.sys | ntfs3 | ntfs3_64 | mkntfs | chkdsk | | |
34 | * ----------------------------------------------------------------------------- | |
35 | * | < 16T, 2^44 | < 2^32 | yes | yes | yes | yes | yes | | |
36 | * | > 16T, 2^44 | > 2^32 | no | no | yes | yes | yes | | |
37 | * ----------------------------------------------------------|------------------ | |
38 | * | |
39 | * To mount large volumes as ntfs one should use large cluster size (up to 2M) | |
40 | * The maximum volume size in this case is 2^32 * 2^21 = 2^53 = 8P | |
41 | * | |
42 | * ntfs limits, cluster size is 2M (2^31) | |
43 | * ----------------------------------------------------------------------------- | |
44 | * | < 8P, 2^54 | < 2^32 | yes | yes | yes | yes | yes | | |
45 | * | > 8P, 2^54 | > 2^32 | no | no | yes | yes | yes | | |
46 | * ----------------------------------------------------------|------------------ | |
47 | * | |
82cae269 KK |
48 | */ |
49 | ||
82cae269 KK |
50 | #include <linux/blkdev.h> |
51 | #include <linux/buffer_head.h> | |
52 | #include <linux/exportfs.h> | |
53 | #include <linux/fs.h> | |
610f8f5a KA |
54 | #include <linux/fs_context.h> |
55 | #include <linux/fs_parser.h> | |
528c9b3d | 56 | #include <linux/log2.h> |
cd39981f | 57 | #include <linux/minmax.h> |
82cae269 KK |
58 | #include <linux/module.h> |
59 | #include <linux/nls.h> | |
82cae269 KK |
60 | #include <linux/seq_file.h> |
61 | #include <linux/statfs.h> | |
62 | ||
63 | #include "debug.h" | |
64 | #include "ntfs.h" | |
65 | #include "ntfs_fs.h" | |
66 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
67 | #include "lib/lib.h" | |
68 | #endif | |
69 | ||
70 | #ifdef CONFIG_PRINTK | |
71 | /* | |
e8b8e97f KA |
72 | * ntfs_printk - Trace warnings/notices/errors. |
73 | * | |
82cae269 KK |
74 | * Thanks Joe Perches <joe@perches.com> for implementation |
75 | */ | |
76 | void ntfs_printk(const struct super_block *sb, const char *fmt, ...) | |
77 | { | |
78 | struct va_format vaf; | |
79 | va_list args; | |
80 | int level; | |
81 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
82 | ||
e8b8e97f | 83 | /* Should we use different ratelimits for warnings/notices/errors? */ |
82cae269 KK |
84 | if (!___ratelimit(&sbi->msg_ratelimit, "ntfs3")) |
85 | return; | |
86 | ||
87 | va_start(args, fmt); | |
88 | ||
89 | level = printk_get_level(fmt); | |
90 | vaf.fmt = printk_skip_level(fmt); | |
91 | vaf.va = &args; | |
92 | printk("%c%cntfs3: %s: %pV\n", KERN_SOH_ASCII, level, sb->s_id, &vaf); | |
93 | ||
94 | va_end(args); | |
95 | } | |
96 | ||
97 | static char s_name_buf[512]; | |
e8b8e97f | 98 | static atomic_t s_name_buf_cnt = ATOMIC_INIT(1); // 1 means 'free s_name_buf'. |
82cae269 | 99 | |
e8b8e97f KA |
100 | /* |
101 | * ntfs_inode_printk | |
102 | * | |
103 | * Print warnings/notices/errors about inode using name or inode number. | |
104 | */ | |
82cae269 KK |
105 | void ntfs_inode_printk(struct inode *inode, const char *fmt, ...) |
106 | { | |
107 | struct super_block *sb = inode->i_sb; | |
108 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
109 | char *name; | |
110 | va_list args; | |
111 | struct va_format vaf; | |
112 | int level; | |
113 | ||
114 | if (!___ratelimit(&sbi->msg_ratelimit, "ntfs3")) | |
115 | return; | |
116 | ||
e8b8e97f | 117 | /* Use static allocated buffer, if possible. */ |
82cae269 KK |
118 | name = atomic_dec_and_test(&s_name_buf_cnt) |
119 | ? s_name_buf | |
120 | : kmalloc(sizeof(s_name_buf), GFP_NOFS); | |
121 | ||
122 | if (name) { | |
123 | struct dentry *de = d_find_alias(inode); | |
124 | const u32 name_len = ARRAY_SIZE(s_name_buf) - 1; | |
125 | ||
126 | if (de) { | |
127 | spin_lock(&de->d_lock); | |
128 | snprintf(name, name_len, " \"%s\"", de->d_name.name); | |
129 | spin_unlock(&de->d_lock); | |
e8b8e97f | 130 | name[name_len] = 0; /* To be sure. */ |
82cae269 KK |
131 | } else { |
132 | name[0] = 0; | |
133 | } | |
e8b8e97f | 134 | dput(de); /* Cocci warns if placed in branch "if (de)" */ |
82cae269 KK |
135 | } |
136 | ||
137 | va_start(args, fmt); | |
138 | ||
139 | level = printk_get_level(fmt); | |
140 | vaf.fmt = printk_skip_level(fmt); | |
141 | vaf.va = &args; | |
142 | ||
143 | printk("%c%cntfs3: %s: ino=%lx,%s %pV\n", KERN_SOH_ASCII, level, | |
144 | sb->s_id, inode->i_ino, name ? name : "", &vaf); | |
145 | ||
146 | va_end(args); | |
147 | ||
148 | atomic_inc(&s_name_buf_cnt); | |
149 | if (name != s_name_buf) | |
150 | kfree(name); | |
151 | } | |
152 | #endif | |
153 | ||
154 | /* | |
155 | * Shared memory struct. | |
156 | * | |
e8b8e97f KA |
157 | * On-disk ntfs's upcase table is created by ntfs formatter. |
158 | * 'upcase' table is 128K bytes of memory. | |
159 | * We should read it into memory when mounting. | |
160 | * Several ntfs volumes likely use the same 'upcase' table. | |
161 | * It is good idea to share in-memory 'upcase' table between different volumes. | |
162 | * Unfortunately winxp/vista/win7 use different upcase tables. | |
82cae269 KK |
163 | */ |
164 | static DEFINE_SPINLOCK(s_shared_lock); | |
165 | ||
166 | static struct { | |
167 | void *ptr; | |
168 | u32 len; | |
169 | int cnt; | |
170 | } s_shared[8]; | |
171 | ||
172 | /* | |
173 | * ntfs_set_shared | |
174 | * | |
e8b8e97f KA |
175 | * Return: |
176 | * * @ptr - If pointer was saved in shared memory. | |
177 | * * NULL - If pointer was not shared. | |
82cae269 KK |
178 | */ |
179 | void *ntfs_set_shared(void *ptr, u32 bytes) | |
180 | { | |
181 | void *ret = NULL; | |
182 | int i, j = -1; | |
183 | ||
184 | spin_lock(&s_shared_lock); | |
185 | for (i = 0; i < ARRAY_SIZE(s_shared); i++) { | |
186 | if (!s_shared[i].cnt) { | |
187 | j = i; | |
188 | } else if (bytes == s_shared[i].len && | |
189 | !memcmp(s_shared[i].ptr, ptr, bytes)) { | |
190 | s_shared[i].cnt += 1; | |
191 | ret = s_shared[i].ptr; | |
192 | break; | |
193 | } | |
194 | } | |
195 | ||
196 | if (!ret && j != -1) { | |
197 | s_shared[j].ptr = ptr; | |
198 | s_shared[j].len = bytes; | |
199 | s_shared[j].cnt = 1; | |
200 | ret = ptr; | |
201 | } | |
202 | spin_unlock(&s_shared_lock); | |
203 | ||
204 | return ret; | |
205 | } | |
206 | ||
207 | /* | |
208 | * ntfs_put_shared | |
209 | * | |
e8b8e97f KA |
210 | * Return: |
211 | * * @ptr - If pointer is not shared anymore. | |
212 | * * NULL - If pointer is still shared. | |
82cae269 KK |
213 | */ |
214 | void *ntfs_put_shared(void *ptr) | |
215 | { | |
216 | void *ret = ptr; | |
217 | int i; | |
218 | ||
219 | spin_lock(&s_shared_lock); | |
220 | for (i = 0; i < ARRAY_SIZE(s_shared); i++) { | |
221 | if (s_shared[i].cnt && s_shared[i].ptr == ptr) { | |
222 | if (--s_shared[i].cnt) | |
223 | ret = NULL; | |
224 | break; | |
225 | } | |
226 | } | |
227 | spin_unlock(&s_shared_lock); | |
228 | ||
229 | return ret; | |
230 | } | |
231 | ||
610f8f5a | 232 | static inline void put_mount_options(struct ntfs_mount_options *options) |
82cae269 | 233 | { |
610f8f5a | 234 | kfree(options->nls_name); |
82cae269 | 235 | unload_nls(options->nls); |
610f8f5a | 236 | kfree(options); |
82cae269 KK |
237 | } |
238 | ||
239 | enum Opt { | |
240 | Opt_uid, | |
241 | Opt_gid, | |
242 | Opt_umask, | |
243 | Opt_dmask, | |
244 | Opt_fmask, | |
245 | Opt_immutable, | |
246 | Opt_discard, | |
247 | Opt_force, | |
248 | Opt_sparse, | |
249 | Opt_nohidden, | |
098250db | 250 | Opt_hide_dot_files, |
1d07a9df | 251 | Opt_windows_names, |
82cae269 KK |
252 | Opt_showmeta, |
253 | Opt_acl, | |
e274cde8 | 254 | Opt_iocharset, |
82cae269 | 255 | Opt_prealloc, |
28a941ff | 256 | Opt_noacsrules, |
a3a956c7 | 257 | Opt_nocase, |
82cae269 KK |
258 | Opt_err, |
259 | }; | |
260 | ||
610f8f5a KA |
261 | static const struct fs_parameter_spec ntfs_fs_parameters[] = { |
262 | fsparam_u32("uid", Opt_uid), | |
263 | fsparam_u32("gid", Opt_gid), | |
264 | fsparam_u32oct("umask", Opt_umask), | |
265 | fsparam_u32oct("dmask", Opt_dmask), | |
266 | fsparam_u32oct("fmask", Opt_fmask), | |
267 | fsparam_flag_no("sys_immutable", Opt_immutable), | |
268 | fsparam_flag_no("discard", Opt_discard), | |
269 | fsparam_flag_no("force", Opt_force), | |
270 | fsparam_flag_no("sparse", Opt_sparse), | |
9d1939f4 | 271 | fsparam_flag_no("hidden", Opt_nohidden), |
dc0fcc99 | 272 | fsparam_flag_no("hide_dot_files", Opt_hide_dot_files), |
1d07a9df | 273 | fsparam_flag_no("windows_names", Opt_windows_names), |
610f8f5a KA |
274 | fsparam_flag_no("acl", Opt_acl), |
275 | fsparam_flag_no("showmeta", Opt_showmeta), | |
610f8f5a | 276 | fsparam_flag_no("prealloc", Opt_prealloc), |
28a941ff | 277 | fsparam_flag_no("acsrules", Opt_noacsrules), |
a3a956c7 | 278 | fsparam_flag_no("nocase", Opt_nocase), |
e274cde8 | 279 | fsparam_string("iocharset", Opt_iocharset), |
610f8f5a | 280 | {} |
82cae269 KK |
281 | }; |
282 | ||
610f8f5a KA |
283 | /* |
284 | * Load nls table or if @nls is utf8 then return NULL. | |
285 | */ | |
286 | static struct nls_table *ntfs_load_nls(char *nls) | |
82cae269 | 287 | { |
610f8f5a | 288 | struct nls_table *ret; |
82cae269 | 289 | |
610f8f5a KA |
290 | if (!nls) |
291 | nls = CONFIG_NLS_DEFAULT; | |
82cae269 | 292 | |
610f8f5a KA |
293 | if (strcmp(nls, "utf8") == 0) |
294 | return NULL; | |
82cae269 | 295 | |
610f8f5a KA |
296 | if (strcmp(nls, CONFIG_NLS_DEFAULT) == 0) |
297 | return load_nls_default(); | |
82cae269 | 298 | |
610f8f5a KA |
299 | ret = load_nls(nls); |
300 | if (ret) | |
301 | return ret; | |
82cae269 | 302 | |
610f8f5a KA |
303 | return ERR_PTR(-EINVAL); |
304 | } | |
305 | ||
306 | static int ntfs_fs_parse_param(struct fs_context *fc, | |
307 | struct fs_parameter *param) | |
308 | { | |
309 | struct ntfs_mount_options *opts = fc->fs_private; | |
310 | struct fs_parse_result result; | |
311 | int opt; | |
312 | ||
313 | opt = fs_parse(fc, ntfs_fs_parameters, param, &result); | |
314 | if (opt < 0) | |
315 | return opt; | |
316 | ||
317 | switch (opt) { | |
318 | case Opt_uid: | |
319 | opts->fs_uid = make_kuid(current_user_ns(), result.uint_32); | |
320 | if (!uid_valid(opts->fs_uid)) | |
321 | return invalf(fc, "ntfs3: Invalid value for uid."); | |
610f8f5a KA |
322 | break; |
323 | case Opt_gid: | |
324 | opts->fs_gid = make_kgid(current_user_ns(), result.uint_32); | |
325 | if (!gid_valid(opts->fs_gid)) | |
326 | return invalf(fc, "ntfs3: Invalid value for gid."); | |
610f8f5a KA |
327 | break; |
328 | case Opt_umask: | |
329 | if (result.uint_32 & ~07777) | |
330 | return invalf(fc, "ntfs3: Invalid value for umask."); | |
331 | opts->fs_fmask_inv = ~result.uint_32; | |
332 | opts->fs_dmask_inv = ~result.uint_32; | |
333 | opts->fmask = 1; | |
334 | opts->dmask = 1; | |
335 | break; | |
336 | case Opt_dmask: | |
337 | if (result.uint_32 & ~07777) | |
338 | return invalf(fc, "ntfs3: Invalid value for dmask."); | |
339 | opts->fs_dmask_inv = ~result.uint_32; | |
340 | opts->dmask = 1; | |
341 | break; | |
342 | case Opt_fmask: | |
343 | if (result.uint_32 & ~07777) | |
344 | return invalf(fc, "ntfs3: Invalid value for fmask."); | |
345 | opts->fs_fmask_inv = ~result.uint_32; | |
346 | opts->fmask = 1; | |
347 | break; | |
348 | case Opt_immutable: | |
349 | opts->sys_immutable = result.negated ? 0 : 1; | |
350 | break; | |
351 | case Opt_discard: | |
352 | opts->discard = result.negated ? 0 : 1; | |
353 | break; | |
354 | case Opt_force: | |
355 | opts->force = result.negated ? 0 : 1; | |
356 | break; | |
357 | case Opt_sparse: | |
358 | opts->sparse = result.negated ? 0 : 1; | |
359 | break; | |
360 | case Opt_nohidden: | |
9d1939f4 | 361 | opts->nohidden = result.negated ? 1 : 0; |
610f8f5a | 362 | break; |
098250db | 363 | case Opt_hide_dot_files: |
4c9ba192 | 364 | opts->hide_dot_files = result.negated ? 0 : 1; |
098250db | 365 | break; |
1d07a9df DP |
366 | case Opt_windows_names: |
367 | opts->windows_names = result.negated ? 0 : 1; | |
368 | break; | |
610f8f5a KA |
369 | case Opt_acl: |
370 | if (!result.negated) | |
82cae269 | 371 | #ifdef CONFIG_NTFS3_FS_POSIX_ACL |
610f8f5a | 372 | fc->sb_flags |= SB_POSIXACL; |
82cae269 | 373 | #else |
610f8f5a | 374 | return invalf(fc, "ntfs3: Support for ACL not compiled in!"); |
82cae269 | 375 | #endif |
610f8f5a KA |
376 | else |
377 | fc->sb_flags &= ~SB_POSIXACL; | |
378 | break; | |
379 | case Opt_showmeta: | |
380 | opts->showmeta = result.negated ? 0 : 1; | |
381 | break; | |
e274cde8 | 382 | case Opt_iocharset: |
610f8f5a KA |
383 | kfree(opts->nls_name); |
384 | opts->nls_name = param->string; | |
385 | param->string = NULL; | |
386 | break; | |
387 | case Opt_prealloc: | |
388 | opts->prealloc = result.negated ? 0 : 1; | |
389 | break; | |
28a941ff KA |
390 | case Opt_noacsrules: |
391 | opts->noacsrules = result.negated ? 1 : 0; | |
610f8f5a | 392 | break; |
a3a956c7 KK |
393 | case Opt_nocase: |
394 | opts->nocase = result.negated ? 1 : 0; | |
395 | break; | |
610f8f5a KA |
396 | default: |
397 | /* Should not be here unless we forget add case. */ | |
398 | return -EINVAL; | |
82cae269 | 399 | } |
82cae269 KK |
400 | return 0; |
401 | } | |
402 | ||
610f8f5a | 403 | static int ntfs_fs_reconfigure(struct fs_context *fc) |
82cae269 | 404 | { |
610f8f5a | 405 | struct super_block *sb = fc->root->d_sb; |
82cae269 | 406 | struct ntfs_sb_info *sbi = sb->s_fs_info; |
610f8f5a KA |
407 | struct ntfs_mount_options *new_opts = fc->fs_private; |
408 | int ro_rw; | |
82cae269 | 409 | |
610f8f5a | 410 | ro_rw = sb_rdonly(sb) && !(fc->sb_flags & SB_RDONLY); |
82cae269 | 411 | if (ro_rw && (sbi->flags & NTFS_FLAGS_NEED_REPLAY)) { |
610f8f5a KA |
412 | errorf(fc, "ntfs3: Couldn't remount rw because journal is not replayed. Please umount/remount instead\n"); |
413 | return -EINVAL; | |
414 | } | |
415 | ||
416 | new_opts->nls = ntfs_load_nls(new_opts->nls_name); | |
417 | if (IS_ERR(new_opts->nls)) { | |
418 | new_opts->nls = NULL; | |
e274cde8 | 419 | errorf(fc, "ntfs3: Cannot load iocharset %s", new_opts->nls_name); |
610f8f5a | 420 | return -EINVAL; |
82cae269 | 421 | } |
610f8f5a | 422 | if (new_opts->nls != sbi->options->nls) |
e274cde8 | 423 | return invalf(fc, "ntfs3: Cannot use different iocharset when remounting!"); |
82cae269 KK |
424 | |
425 | sync_filesystem(sb); | |
426 | ||
427 | if (ro_rw && (sbi->volume.flags & VOLUME_FLAG_DIRTY) && | |
610f8f5a KA |
428 | !new_opts->force) { |
429 | errorf(fc, "ntfs3: Volume is dirty and \"force\" flag is not set!"); | |
430 | return -EINVAL; | |
82cae269 KK |
431 | } |
432 | ||
cd39981f | 433 | swap(sbi->options, fc->fs_private); |
82cae269 | 434 | |
610f8f5a | 435 | return 0; |
82cae269 KK |
436 | } |
437 | ||
438 | static struct kmem_cache *ntfs_inode_cachep; | |
439 | ||
440 | static struct inode *ntfs_alloc_inode(struct super_block *sb) | |
441 | { | |
fd60b288 | 442 | struct ntfs_inode *ni = alloc_inode_sb(sb, ntfs_inode_cachep, GFP_NOFS); |
82cae269 KK |
443 | |
444 | if (!ni) | |
445 | return NULL; | |
446 | ||
447 | memset(ni, 0, offsetof(struct ntfs_inode, vfs_inode)); | |
82cae269 | 448 | mutex_init(&ni->ni_lock); |
82cae269 KK |
449 | return &ni->vfs_inode; |
450 | } | |
451 | ||
ae6b47b5 | 452 | static void ntfs_free_inode(struct inode *inode) |
82cae269 | 453 | { |
82cae269 KK |
454 | struct ntfs_inode *ni = ntfs_i(inode); |
455 | ||
456 | mutex_destroy(&ni->ni_lock); | |
82cae269 KK |
457 | kmem_cache_free(ntfs_inode_cachep, ni); |
458 | } | |
459 | ||
82cae269 KK |
460 | static void init_once(void *foo) |
461 | { | |
462 | struct ntfs_inode *ni = foo; | |
463 | ||
464 | inode_init_once(&ni->vfs_inode); | |
465 | } | |
466 | ||
e8b8e97f KA |
467 | /* |
468 | * put_ntfs - Noinline to reduce binary size. | |
469 | */ | |
82cae269 KK |
470 | static noinline void put_ntfs(struct ntfs_sb_info *sbi) |
471 | { | |
195c52bd KA |
472 | kfree(sbi->new_rec); |
473 | kvfree(ntfs_put_shared(sbi->upcase)); | |
474 | kfree(sbi->def_table); | |
82cae269 KK |
475 | |
476 | wnd_close(&sbi->mft.bitmap); | |
477 | wnd_close(&sbi->used.bitmap); | |
478 | ||
479 | if (sbi->mft.ni) | |
480 | iput(&sbi->mft.ni->vfs_inode); | |
481 | ||
482 | if (sbi->security.ni) | |
483 | iput(&sbi->security.ni->vfs_inode); | |
484 | ||
485 | if (sbi->reparse.ni) | |
486 | iput(&sbi->reparse.ni->vfs_inode); | |
487 | ||
488 | if (sbi->objid.ni) | |
489 | iput(&sbi->objid.ni->vfs_inode); | |
490 | ||
491 | if (sbi->volume.ni) | |
492 | iput(&sbi->volume.ni->vfs_inode); | |
493 | ||
494 | ntfs_update_mftmirr(sbi, 0); | |
495 | ||
496 | indx_clear(&sbi->security.index_sii); | |
497 | indx_clear(&sbi->security.index_sdh); | |
498 | indx_clear(&sbi->reparse.index_r); | |
499 | indx_clear(&sbi->objid.index_o); | |
195c52bd | 500 | kfree(sbi->compress.lznt); |
82cae269 KK |
501 | #ifdef CONFIG_NTFS3_LZX_XPRESS |
502 | xpress_free_decompressor(sbi->compress.xpress); | |
503 | lzx_free_decompressor(sbi->compress.lzx); | |
504 | #endif | |
195c52bd | 505 | kfree(sbi); |
82cae269 KK |
506 | } |
507 | ||
508 | static void ntfs_put_super(struct super_block *sb) | |
509 | { | |
510 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
511 | ||
e8b8e97f | 512 | /* Mark rw ntfs as clear, if possible. */ |
82cae269 KK |
513 | ntfs_set_state(sbi, NTFS_DIRTY_CLEAR); |
514 | ||
610f8f5a | 515 | put_mount_options(sbi->options); |
82cae269 | 516 | put_ntfs(sbi); |
610f8f5a | 517 | sb->s_fs_info = NULL; |
82cae269 KK |
518 | |
519 | sync_blockdev(sb->s_bdev); | |
520 | } | |
521 | ||
522 | static int ntfs_statfs(struct dentry *dentry, struct kstatfs *buf) | |
523 | { | |
524 | struct super_block *sb = dentry->d_sb; | |
525 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
526 | struct wnd_bitmap *wnd = &sbi->used.bitmap; | |
527 | ||
528 | buf->f_type = sb->s_magic; | |
529 | buf->f_bsize = sbi->cluster_size; | |
530 | buf->f_blocks = wnd->nbits; | |
531 | ||
532 | buf->f_bfree = buf->f_bavail = wnd_zeroes(wnd); | |
533 | buf->f_fsid.val[0] = sbi->volume.ser_num; | |
534 | buf->f_fsid.val[1] = (sbi->volume.ser_num >> 32); | |
535 | buf->f_namelen = NTFS_NAME_LEN; | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | static int ntfs_show_options(struct seq_file *m, struct dentry *root) | |
541 | { | |
542 | struct super_block *sb = root->d_sb; | |
543 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
564c97bd | 544 | struct ntfs_mount_options *opts = sbi->options; |
82cae269 KK |
545 | struct user_namespace *user_ns = seq_user_ns(m); |
546 | ||
15b2ae77 KA |
547 | seq_printf(m, ",uid=%u", |
548 | from_kuid_munged(user_ns, opts->fs_uid)); | |
549 | seq_printf(m, ",gid=%u", | |
550 | from_kgid_munged(user_ns, opts->fs_gid)); | |
82cae269 | 551 | if (opts->fmask) |
f27b92ec | 552 | seq_printf(m, ",fmask=%04o", opts->fs_fmask_inv ^ 0xffff); |
82cae269 | 553 | if (opts->dmask) |
f27b92ec | 554 | seq_printf(m, ",dmask=%04o", opts->fs_dmask_inv ^ 0xffff); |
82cae269 | 555 | if (opts->nls) |
e274cde8 | 556 | seq_printf(m, ",iocharset=%s", opts->nls->charset); |
82cae269 | 557 | else |
e274cde8 | 558 | seq_puts(m, ",iocharset=utf8"); |
82cae269 KK |
559 | if (opts->sys_immutable) |
560 | seq_puts(m, ",sys_immutable"); | |
561 | if (opts->discard) | |
562 | seq_puts(m, ",discard"); | |
563 | if (opts->sparse) | |
564 | seq_puts(m, ",sparse"); | |
565 | if (opts->showmeta) | |
566 | seq_puts(m, ",showmeta"); | |
567 | if (opts->nohidden) | |
568 | seq_puts(m, ",nohidden"); | |
1d07a9df DP |
569 | if (opts->windows_names) |
570 | seq_puts(m, ",windows_names"); | |
19b42450 | 571 | if (opts->hide_dot_files) |
dc0fcc99 | 572 | seq_puts(m, ",hide_dot_files"); |
82cae269 KK |
573 | if (opts->force) |
574 | seq_puts(m, ",force"); | |
28a941ff KA |
575 | if (opts->noacsrules) |
576 | seq_puts(m, ",noacsrules"); | |
82cae269 KK |
577 | if (opts->prealloc) |
578 | seq_puts(m, ",prealloc"); | |
579 | if (sb->s_flags & SB_POSIXACL) | |
580 | seq_puts(m, ",acl"); | |
82cae269 KK |
581 | |
582 | return 0; | |
583 | } | |
584 | ||
e8b8e97f KA |
585 | /* |
586 | * ntfs_sync_fs - super_operations::sync_fs | |
587 | */ | |
82cae269 KK |
588 | static int ntfs_sync_fs(struct super_block *sb, int wait) |
589 | { | |
590 | int err = 0, err2; | |
591 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
592 | struct ntfs_inode *ni; | |
593 | struct inode *inode; | |
594 | ||
595 | ni = sbi->security.ni; | |
596 | if (ni) { | |
597 | inode = &ni->vfs_inode; | |
598 | err2 = _ni_write_inode(inode, wait); | |
599 | if (err2 && !err) | |
600 | err = err2; | |
601 | } | |
602 | ||
603 | ni = sbi->objid.ni; | |
604 | if (ni) { | |
605 | inode = &ni->vfs_inode; | |
606 | err2 = _ni_write_inode(inode, wait); | |
607 | if (err2 && !err) | |
608 | err = err2; | |
609 | } | |
610 | ||
611 | ni = sbi->reparse.ni; | |
612 | if (ni) { | |
613 | inode = &ni->vfs_inode; | |
614 | err2 = _ni_write_inode(inode, wait); | |
615 | if (err2 && !err) | |
616 | err = err2; | |
617 | } | |
618 | ||
619 | if (!err) | |
620 | ntfs_set_state(sbi, NTFS_DIRTY_CLEAR); | |
621 | ||
622 | ntfs_update_mftmirr(sbi, wait); | |
623 | ||
624 | return err; | |
625 | } | |
626 | ||
627 | static const struct super_operations ntfs_sops = { | |
628 | .alloc_inode = ntfs_alloc_inode, | |
ae6b47b5 | 629 | .free_inode = ntfs_free_inode, |
82cae269 KK |
630 | .evict_inode = ntfs_evict_inode, |
631 | .put_super = ntfs_put_super, | |
632 | .statfs = ntfs_statfs, | |
633 | .show_options = ntfs_show_options, | |
634 | .sync_fs = ntfs_sync_fs, | |
82cae269 KK |
635 | .write_inode = ntfs3_write_inode, |
636 | }; | |
637 | ||
638 | static struct inode *ntfs_export_get_inode(struct super_block *sb, u64 ino, | |
639 | u32 generation) | |
640 | { | |
641 | struct MFT_REF ref; | |
642 | struct inode *inode; | |
643 | ||
644 | ref.low = cpu_to_le32(ino); | |
645 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER | |
646 | ref.high = cpu_to_le16(ino >> 32); | |
647 | #else | |
648 | ref.high = 0; | |
649 | #endif | |
650 | ref.seq = cpu_to_le16(generation); | |
651 | ||
652 | inode = ntfs_iget5(sb, &ref, NULL); | |
653 | if (!IS_ERR(inode) && is_bad_inode(inode)) { | |
654 | iput(inode); | |
655 | inode = ERR_PTR(-ESTALE); | |
656 | } | |
657 | ||
658 | return inode; | |
659 | } | |
660 | ||
661 | static struct dentry *ntfs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
662 | int fh_len, int fh_type) | |
663 | { | |
664 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
665 | ntfs_export_get_inode); | |
666 | } | |
667 | ||
668 | static struct dentry *ntfs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
669 | int fh_len, int fh_type) | |
670 | { | |
671 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
672 | ntfs_export_get_inode); | |
673 | } | |
674 | ||
675 | /* TODO: == ntfs_sync_inode */ | |
676 | static int ntfs_nfs_commit_metadata(struct inode *inode) | |
677 | { | |
678 | return _ni_write_inode(inode, 1); | |
679 | } | |
680 | ||
681 | static const struct export_operations ntfs_export_ops = { | |
682 | .fh_to_dentry = ntfs_fh_to_dentry, | |
683 | .fh_to_parent = ntfs_fh_to_parent, | |
684 | .get_parent = ntfs3_get_parent, | |
685 | .commit_metadata = ntfs_nfs_commit_metadata, | |
686 | }; | |
687 | ||
e8b8e97f KA |
688 | /* |
689 | * format_size_gb - Return Gb,Mb to print with "%u.%02u Gb". | |
690 | */ | |
82cae269 KK |
691 | static u32 format_size_gb(const u64 bytes, u32 *mb) |
692 | { | |
e8b8e97f | 693 | /* Do simple right 30 bit shift of 64 bit value. */ |
82cae269 KK |
694 | u64 kbytes = bytes >> 10; |
695 | u32 kbytes32 = kbytes; | |
696 | ||
697 | *mb = (100 * (kbytes32 & 0xfffff) + 0x7ffff) >> 20; | |
698 | if (*mb >= 100) | |
699 | *mb = 99; | |
700 | ||
701 | return (kbytes32 >> 20) | (((u32)(kbytes >> 32)) << 12); | |
702 | } | |
703 | ||
704 | static u32 true_sectors_per_clst(const struct NTFS_BOOT *boot) | |
705 | { | |
a3b77434 RD |
706 | if (boot->sectors_per_clusters <= 0x80) |
707 | return boot->sectors_per_clusters; | |
708 | if (boot->sectors_per_clusters >= 0xf4) /* limit shift to 2MB max */ | |
caad9dd8 | 709 | return 1U << -(s8)boot->sectors_per_clusters; |
a3b77434 | 710 | return -EINVAL; |
82cae269 KK |
711 | } |
712 | ||
e8b8e97f KA |
713 | /* |
714 | * ntfs_init_from_boot - Init internal info from on-disk boot sector. | |
715 | */ | |
82cae269 KK |
716 | static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size, |
717 | u64 dev_size) | |
718 | { | |
719 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
720 | int err; | |
721 | u32 mb, gb, boot_sector_size, sct_per_clst, record_size; | |
dbf59e2a | 722 | u64 sectors, clusters, mlcn, mlcn2; |
82cae269 KK |
723 | struct NTFS_BOOT *boot; |
724 | struct buffer_head *bh; | |
725 | struct MFT_REC *rec; | |
726 | u16 fn, ao; | |
727 | ||
728 | sbi->volume.blocks = dev_size >> PAGE_SHIFT; | |
729 | ||
730 | bh = ntfs_bread(sb, 0); | |
731 | if (!bh) | |
732 | return -EIO; | |
733 | ||
734 | err = -EINVAL; | |
735 | boot = (struct NTFS_BOOT *)bh->b_data; | |
736 | ||
737 | if (memcmp(boot->system_id, "NTFS ", sizeof("NTFS ") - 1)) | |
738 | goto out; | |
739 | ||
740 | /* 0x55AA is not mandaroty. Thanks Maxim Suhanov*/ | |
741 | /*if (0x55 != boot->boot_magic[0] || 0xAA != boot->boot_magic[1]) | |
742 | * goto out; | |
743 | */ | |
744 | ||
745 | boot_sector_size = (u32)boot->bytes_per_sector[1] << 8; | |
746 | if (boot->bytes_per_sector[0] || boot_sector_size < SECTOR_SIZE || | |
528c9b3d | 747 | !is_power_of_2(boot_sector_size)) { |
82cae269 KK |
748 | goto out; |
749 | } | |
750 | ||
751 | /* cluster size: 512, 1K, 2K, 4K, ... 2M */ | |
752 | sct_per_clst = true_sectors_per_clst(boot); | |
a3b77434 RD |
753 | if ((int)sct_per_clst < 0) |
754 | goto out; | |
528c9b3d | 755 | if (!is_power_of_2(sct_per_clst)) |
82cae269 KK |
756 | goto out; |
757 | ||
758 | mlcn = le64_to_cpu(boot->mft_clst); | |
759 | mlcn2 = le64_to_cpu(boot->mft2_clst); | |
760 | sectors = le64_to_cpu(boot->sectors_per_volume); | |
761 | ||
762 | if (mlcn * sct_per_clst >= sectors) | |
763 | goto out; | |
764 | ||
765 | if (mlcn2 * sct_per_clst >= sectors) | |
766 | goto out; | |
767 | ||
e8b8e97f | 768 | /* Check MFT record size. */ |
82cae269 KK |
769 | if ((boot->record_size < 0 && |
770 | SECTOR_SIZE > (2U << (-boot->record_size))) || | |
528c9b3d | 771 | (boot->record_size >= 0 && !is_power_of_2(boot->record_size))) { |
82cae269 KK |
772 | goto out; |
773 | } | |
774 | ||
e8b8e97f | 775 | /* Check index record size. */ |
82cae269 KK |
776 | if ((boot->index_size < 0 && |
777 | SECTOR_SIZE > (2U << (-boot->index_size))) || | |
528c9b3d | 778 | (boot->index_size >= 0 && !is_power_of_2(boot->index_size))) { |
82cae269 KK |
779 | goto out; |
780 | } | |
781 | ||
dbf59e2a | 782 | sbi->volume.size = sectors * boot_sector_size; |
82cae269 | 783 | |
dbf59e2a | 784 | gb = format_size_gb(sbi->volume.size + boot_sector_size, &mb); |
82cae269 KK |
785 | |
786 | /* | |
e8b8e97f KA |
787 | * - Volume formatted and mounted with the same sector size. |
788 | * - Volume formatted 4K and mounted as 512. | |
789 | * - Volume formatted 512 and mounted as 4K. | |
82cae269 | 790 | */ |
dbf59e2a KK |
791 | if (boot_sector_size != sector_size) { |
792 | ntfs_warn( | |
793 | sb, | |
794 | "Different NTFS' sector size (%u) and media sector size (%u)", | |
795 | boot_sector_size, sector_size); | |
82cae269 KK |
796 | dev_size += sector_size - 1; |
797 | } | |
798 | ||
799 | sbi->cluster_size = boot_sector_size * sct_per_clst; | |
800 | sbi->cluster_bits = blksize_bits(sbi->cluster_size); | |
801 | ||
802 | sbi->mft.lbo = mlcn << sbi->cluster_bits; | |
803 | sbi->mft.lbo2 = mlcn2 << sbi->cluster_bits; | |
804 | ||
09f7c338 KK |
805 | /* Compare boot's cluster and sector. */ |
806 | if (sbi->cluster_size < boot_sector_size) | |
82cae269 KK |
807 | goto out; |
808 | ||
09f7c338 KK |
809 | /* Compare boot's cluster and media sector. */ |
810 | if (sbi->cluster_size < sector_size) { | |
811 | /* No way to use ntfs_get_block in this case. */ | |
812 | ntfs_err( | |
813 | sb, | |
814 | "Failed to mount 'cause NTFS's cluster size (%u) is less than media sector size (%u)", | |
815 | sbi->cluster_size, sector_size); | |
816 | goto out; | |
817 | } | |
818 | ||
82cae269 KK |
819 | sbi->cluster_mask = sbi->cluster_size - 1; |
820 | sbi->cluster_mask_inv = ~(u64)sbi->cluster_mask; | |
821 | sbi->record_size = record_size = boot->record_size < 0 | |
822 | ? 1 << (-boot->record_size) | |
823 | : (u32)boot->record_size | |
824 | << sbi->cluster_bits; | |
825 | ||
0b660462 | 826 | if (record_size > MAXIMUM_BYTES_PER_MFT || record_size < SECTOR_SIZE) |
82cae269 KK |
827 | goto out; |
828 | ||
829 | sbi->record_bits = blksize_bits(record_size); | |
830 | sbi->attr_size_tr = (5 * record_size >> 4); // ~320 bytes | |
831 | ||
832 | sbi->max_bytes_per_attr = | |
fa3cacf5 KA |
833 | record_size - ALIGN(MFTRECORD_FIXUP_OFFSET_1, 8) - |
834 | ALIGN(((record_size >> SECTOR_SHIFT) * sizeof(short)), 8) - | |
835 | ALIGN(sizeof(enum ATTR_TYPE), 8); | |
82cae269 KK |
836 | |
837 | sbi->index_size = boot->index_size < 0 | |
838 | ? 1u << (-boot->index_size) | |
839 | : (u32)boot->index_size << sbi->cluster_bits; | |
840 | ||
841 | sbi->volume.ser_num = le64_to_cpu(boot->serial_num); | |
82cae269 | 842 | |
e8b8e97f | 843 | /* Warning if RAW volume. */ |
dbf59e2a | 844 | if (dev_size < sbi->volume.size + boot_sector_size) { |
82cae269 KK |
845 | u32 mb0, gb0; |
846 | ||
847 | gb0 = format_size_gb(dev_size, &mb0); | |
848 | ntfs_warn( | |
849 | sb, | |
850 | "RAW NTFS volume: Filesystem size %u.%02u Gb > volume size %u.%02u Gb. Mount in read-only", | |
851 | gb, mb, gb0, mb0); | |
852 | sb->s_flags |= SB_RDONLY; | |
853 | } | |
854 | ||
855 | clusters = sbi->volume.size >> sbi->cluster_bits; | |
856 | #ifndef CONFIG_NTFS3_64BIT_CLUSTER | |
e8b8e97f | 857 | /* 32 bits per cluster. */ |
82cae269 KK |
858 | if (clusters >> 32) { |
859 | ntfs_notice( | |
860 | sb, | |
861 | "NTFS %u.%02u Gb is too big to use 32 bits per cluster", | |
862 | gb, mb); | |
863 | goto out; | |
864 | } | |
865 | #elif BITS_PER_LONG < 64 | |
866 | #error "CONFIG_NTFS3_64BIT_CLUSTER incompatible in 32 bit OS" | |
867 | #endif | |
868 | ||
869 | sbi->used.bitmap.nbits = clusters; | |
870 | ||
195c52bd | 871 | rec = kzalloc(record_size, GFP_NOFS); |
82cae269 KK |
872 | if (!rec) { |
873 | err = -ENOMEM; | |
874 | goto out; | |
875 | } | |
876 | ||
877 | sbi->new_rec = rec; | |
878 | rec->rhdr.sign = NTFS_FILE_SIGNATURE; | |
879 | rec->rhdr.fix_off = cpu_to_le16(MFTRECORD_FIXUP_OFFSET_1); | |
880 | fn = (sbi->record_size >> SECTOR_SHIFT) + 1; | |
881 | rec->rhdr.fix_num = cpu_to_le16(fn); | |
fa3cacf5 | 882 | ao = ALIGN(MFTRECORD_FIXUP_OFFSET_1 + sizeof(short) * fn, 8); |
82cae269 | 883 | rec->attr_off = cpu_to_le16(ao); |
fa3cacf5 | 884 | rec->used = cpu_to_le32(ao + ALIGN(sizeof(enum ATTR_TYPE), 8)); |
82cae269 KK |
885 | rec->total = cpu_to_le32(sbi->record_size); |
886 | ((struct ATTRIB *)Add2Ptr(rec, ao))->type = ATTR_END; | |
887 | ||
28861e3b | 888 | sb_set_blocksize(sb, min_t(u32, sbi->cluster_size, PAGE_SIZE)); |
82cae269 KK |
889 | |
890 | sbi->block_mask = sb->s_blocksize - 1; | |
891 | sbi->blocks_per_cluster = sbi->cluster_size >> sb->s_blocksize_bits; | |
892 | sbi->volume.blocks = sbi->volume.size >> sb->s_blocksize_bits; | |
893 | ||
e8b8e97f | 894 | /* Maximum size for normal files. */ |
82cae269 KK |
895 | sbi->maxbytes = (clusters << sbi->cluster_bits) - 1; |
896 | ||
897 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER | |
898 | if (clusters >= (1ull << (64 - sbi->cluster_bits))) | |
899 | sbi->maxbytes = -1; | |
900 | sbi->maxbytes_sparse = -1; | |
28861e3b | 901 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
82cae269 | 902 | #else |
e8b8e97f | 903 | /* Maximum size for sparse file. */ |
82cae269 | 904 | sbi->maxbytes_sparse = (1ull << (sbi->cluster_bits + 32)) - 1; |
28861e3b | 905 | sb->s_maxbytes = 0xFFFFFFFFull << sbi->cluster_bits; |
82cae269 KK |
906 | #endif |
907 | ||
8335ebe1 KK |
908 | /* |
909 | * Compute the MFT zone at two steps. | |
910 | * It would be nice if we are able to allocate 1/8 of | |
911 | * total clusters for MFT but not more then 512 MB. | |
912 | */ | |
913 | sbi->zone_max = min_t(CLST, 0x20000000 >> sbi->cluster_bits, clusters >> 3); | |
914 | ||
82cae269 KK |
915 | err = 0; |
916 | ||
917 | out: | |
918 | brelse(bh); | |
919 | ||
920 | return err; | |
921 | } | |
922 | ||
e8b8e97f KA |
923 | /* |
924 | * ntfs_fill_super - Try to mount. | |
925 | */ | |
610f8f5a | 926 | static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc) |
82cae269 KK |
927 | { |
928 | int err; | |
610f8f5a | 929 | struct ntfs_sb_info *sbi = sb->s_fs_info; |
82cae269 | 930 | struct block_device *bdev = sb->s_bdev; |
10b4f12c | 931 | struct inode *inode; |
82cae269 | 932 | struct ntfs_inode *ni; |
ec5fc720 | 933 | size_t i, tt, bad_len, bad_frags; |
82cae269 KK |
934 | CLST vcn, lcn, len; |
935 | struct ATTRIB *attr; | |
936 | const struct VOLUME_INFO *info; | |
937 | u32 idx, done, bytes; | |
938 | struct ATTR_DEF_ENTRY *t; | |
82cae269 | 939 | u16 *shared; |
82cae269 KK |
940 | struct MFT_REF ref; |
941 | ||
942 | ref.high = 0; | |
943 | ||
82cae269 | 944 | sbi->sb = sb; |
cd39981f KK |
945 | sbi->options = fc->fs_private; |
946 | fc->fs_private = NULL; | |
82cae269 KK |
947 | sb->s_flags |= SB_NODIRATIME; |
948 | sb->s_magic = 0x7366746e; // "ntfs" | |
949 | sb->s_op = &ntfs_sops; | |
950 | sb->s_export_op = &ntfs_export_ops; | |
951 | sb->s_time_gran = NTFS_TIME_GRAN; // 100 nsec | |
952 | sb->s_xattr = ntfs_xattr_handlers; | |
a3a956c7 | 953 | sb->s_d_op = sbi->options->nocase ? &ntfs_dentry_ops : NULL; |
82cae269 | 954 | |
610f8f5a KA |
955 | sbi->options->nls = ntfs_load_nls(sbi->options->nls_name); |
956 | if (IS_ERR(sbi->options->nls)) { | |
957 | sbi->options->nls = NULL; | |
958 | errorf(fc, "Cannot load nls %s", sbi->options->nls_name); | |
9b75450d KK |
959 | err = -EINVAL; |
960 | goto out; | |
610f8f5a | 961 | } |
82cae269 | 962 | |
7b47ef52 CH |
963 | if (bdev_max_discard_sectors(bdev) && bdev_discard_granularity(bdev)) { |
964 | sbi->discard_granularity = bdev_discard_granularity(bdev); | |
82cae269 KK |
965 | sbi->discard_granularity_mask_inv = |
966 | ~(u64)(sbi->discard_granularity - 1); | |
967 | } | |
968 | ||
e8b8e97f | 969 | /* Parse boot. */ |
f09dac9a | 970 | err = ntfs_init_from_boot(sb, bdev_logical_block_size(bdev), |
d54f13a8 | 971 | bdev_nr_bytes(bdev)); |
82cae269 | 972 | if (err) |
9b75450d | 973 | goto out; |
82cae269 | 974 | |
82cae269 | 975 | /* |
e8b8e97f KA |
976 | * Load $Volume. This should be done before $LogFile |
977 | * 'cause 'sbi->volume.ni' is used 'ntfs_set_state'. | |
82cae269 KK |
978 | */ |
979 | ref.low = cpu_to_le32(MFT_REC_VOL); | |
980 | ref.seq = cpu_to_le16(MFT_REC_VOL); | |
981 | inode = ntfs_iget5(sb, &ref, &NAME_VOLUME); | |
982 | if (IS_ERR(inode)) { | |
82cae269 | 983 | ntfs_err(sb, "Failed to load $Volume."); |
9b75450d KK |
984 | err = PTR_ERR(inode); |
985 | goto out; | |
82cae269 KK |
986 | } |
987 | ||
988 | ni = ntfs_i(inode); | |
989 | ||
e8b8e97f | 990 | /* Load and save label (not necessary). */ |
82cae269 KK |
991 | attr = ni_find_attr(ni, NULL, NULL, ATTR_LABEL, NULL, 0, NULL, NULL); |
992 | ||
993 | if (!attr) { | |
994 | /* It is ok if no ATTR_LABEL */ | |
995 | } else if (!attr->non_res && !is_attr_ext(attr)) { | |
e8b8e97f | 996 | /* $AttrDef allows labels to be up to 128 symbols. */ |
82cae269 KK |
997 | err = utf16s_to_utf8s(resident_data(attr), |
998 | le32_to_cpu(attr->res.data_size) >> 1, | |
999 | UTF16_LITTLE_ENDIAN, sbi->volume.label, | |
1000 | sizeof(sbi->volume.label)); | |
1001 | if (err < 0) | |
1002 | sbi->volume.label[0] = 0; | |
1003 | } else { | |
e8b8e97f | 1004 | /* Should we break mounting here? */ |
82cae269 | 1005 | //err = -EINVAL; |
9b75450d | 1006 | //goto put_inode_out; |
82cae269 KK |
1007 | } |
1008 | ||
1009 | attr = ni_find_attr(ni, attr, NULL, ATTR_VOL_INFO, NULL, 0, NULL, NULL); | |
1010 | if (!attr || is_attr_ext(attr)) { | |
1011 | err = -EINVAL; | |
9b75450d | 1012 | goto put_inode_out; |
82cae269 KK |
1013 | } |
1014 | ||
1015 | info = resident_data_ex(attr, SIZEOF_ATTRIBUTE_VOLUME_INFO); | |
1016 | if (!info) { | |
1017 | err = -EINVAL; | |
9b75450d | 1018 | goto put_inode_out; |
82cae269 KK |
1019 | } |
1020 | ||
1021 | sbi->volume.major_ver = info->major_ver; | |
1022 | sbi->volume.minor_ver = info->minor_ver; | |
1023 | sbi->volume.flags = info->flags; | |
82cae269 | 1024 | sbi->volume.ni = ni; |
82cae269 | 1025 | |
e8b8e97f | 1026 | /* Load $MFTMirr to estimate recs_mirr. */ |
82cae269 KK |
1027 | ref.low = cpu_to_le32(MFT_REC_MIRR); |
1028 | ref.seq = cpu_to_le16(MFT_REC_MIRR); | |
1029 | inode = ntfs_iget5(sb, &ref, &NAME_MIRROR); | |
1030 | if (IS_ERR(inode)) { | |
82cae269 | 1031 | ntfs_err(sb, "Failed to load $MFTMirr."); |
9b75450d KK |
1032 | err = PTR_ERR(inode); |
1033 | goto out; | |
82cae269 KK |
1034 | } |
1035 | ||
1036 | sbi->mft.recs_mirr = | |
1037 | ntfs_up_cluster(sbi, inode->i_size) >> sbi->record_bits; | |
1038 | ||
1039 | iput(inode); | |
1040 | ||
d3624466 | 1041 | /* Load LogFile to replay. */ |
82cae269 KK |
1042 | ref.low = cpu_to_le32(MFT_REC_LOG); |
1043 | ref.seq = cpu_to_le16(MFT_REC_LOG); | |
1044 | inode = ntfs_iget5(sb, &ref, &NAME_LOGFILE); | |
1045 | if (IS_ERR(inode)) { | |
82cae269 | 1046 | ntfs_err(sb, "Failed to load \x24LogFile."); |
9b75450d KK |
1047 | err = PTR_ERR(inode); |
1048 | goto out; | |
82cae269 KK |
1049 | } |
1050 | ||
1051 | ni = ntfs_i(inode); | |
1052 | ||
1053 | err = ntfs_loadlog_and_replay(ni, sbi); | |
1054 | if (err) | |
9b75450d | 1055 | goto put_inode_out; |
82cae269 KK |
1056 | |
1057 | iput(inode); | |
82cae269 | 1058 | |
82cae269 | 1059 | if (sbi->flags & NTFS_FLAGS_NEED_REPLAY) { |
0cde7e81 | 1060 | if (!sb_rdonly(sb)) { |
82cae269 KK |
1061 | ntfs_warn(sb, |
1062 | "failed to replay log file. Can't mount rw!"); | |
9b75450d KK |
1063 | err = -EINVAL; |
1064 | goto out; | |
82cae269 KK |
1065 | } |
1066 | } else if (sbi->volume.flags & VOLUME_FLAG_DIRTY) { | |
0cde7e81 | 1067 | if (!sb_rdonly(sb) && !sbi->options->force) { |
82cae269 KK |
1068 | ntfs_warn( |
1069 | sb, | |
1070 | "volume is dirty and \"force\" flag is not set!"); | |
9b75450d KK |
1071 | err = -EINVAL; |
1072 | goto out; | |
82cae269 KK |
1073 | } |
1074 | } | |
1075 | ||
e8b8e97f | 1076 | /* Load $MFT. */ |
82cae269 KK |
1077 | ref.low = cpu_to_le32(MFT_REC_MFT); |
1078 | ref.seq = cpu_to_le16(1); | |
1079 | ||
1080 | inode = ntfs_iget5(sb, &ref, &NAME_MFT); | |
1081 | if (IS_ERR(inode)) { | |
82cae269 | 1082 | ntfs_err(sb, "Failed to load $MFT."); |
9b75450d KK |
1083 | err = PTR_ERR(inode); |
1084 | goto out; | |
82cae269 KK |
1085 | } |
1086 | ||
1087 | ni = ntfs_i(inode); | |
1088 | ||
1089 | sbi->mft.used = ni->i_valid >> sbi->record_bits; | |
1090 | tt = inode->i_size >> sbi->record_bits; | |
1091 | sbi->mft.next_free = MFT_REC_USER; | |
1092 | ||
1093 | err = wnd_init(&sbi->mft.bitmap, sb, tt); | |
1094 | if (err) | |
9b75450d | 1095 | goto put_inode_out; |
82cae269 KK |
1096 | |
1097 | err = ni_load_all_mi(ni); | |
1098 | if (err) | |
9b75450d | 1099 | goto put_inode_out; |
82cae269 KK |
1100 | |
1101 | sbi->mft.ni = ni; | |
1102 | ||
e8b8e97f | 1103 | /* Load $Bitmap. */ |
82cae269 KK |
1104 | ref.low = cpu_to_le32(MFT_REC_BITMAP); |
1105 | ref.seq = cpu_to_le16(MFT_REC_BITMAP); | |
1106 | inode = ntfs_iget5(sb, &ref, &NAME_BITMAP); | |
1107 | if (IS_ERR(inode)) { | |
82cae269 | 1108 | ntfs_err(sb, "Failed to load $Bitmap."); |
9b75450d KK |
1109 | err = PTR_ERR(inode); |
1110 | goto out; | |
82cae269 KK |
1111 | } |
1112 | ||
82cae269 KK |
1113 | #ifndef CONFIG_NTFS3_64BIT_CLUSTER |
1114 | if (inode->i_size >> 32) { | |
1115 | err = -EINVAL; | |
9b75450d | 1116 | goto put_inode_out; |
82cae269 KK |
1117 | } |
1118 | #endif | |
1119 | ||
e8b8e97f | 1120 | /* Check bitmap boundary. */ |
82cae269 KK |
1121 | tt = sbi->used.bitmap.nbits; |
1122 | if (inode->i_size < bitmap_size(tt)) { | |
1123 | err = -EINVAL; | |
9b75450d | 1124 | goto put_inode_out; |
82cae269 KK |
1125 | } |
1126 | ||
e8b8e97f | 1127 | /* Not necessary. */ |
82cae269 | 1128 | sbi->used.bitmap.set_tail = true; |
b4f110d6 | 1129 | err = wnd_init(&sbi->used.bitmap, sb, tt); |
82cae269 | 1130 | if (err) |
9b75450d | 1131 | goto put_inode_out; |
82cae269 KK |
1132 | |
1133 | iput(inode); | |
1134 | ||
e8b8e97f | 1135 | /* Compute the MFT zone. */ |
82cae269 KK |
1136 | err = ntfs_refresh_zone(sbi); |
1137 | if (err) | |
9b75450d | 1138 | goto out; |
82cae269 | 1139 | |
ec5fc720 KK |
1140 | /* Load $BadClus. */ |
1141 | ref.low = cpu_to_le32(MFT_REC_BADCLUST); | |
1142 | ref.seq = cpu_to_le16(MFT_REC_BADCLUST); | |
1143 | inode = ntfs_iget5(sb, &ref, &NAME_BADCLUS); | |
1144 | if (IS_ERR(inode)) { | |
1145 | err = PTR_ERR(inode); | |
1146 | ntfs_err(sb, "Failed to load $BadClus (%d).", err); | |
1147 | goto out; | |
1148 | } | |
1149 | ||
1150 | ni = ntfs_i(inode); | |
1151 | bad_len = bad_frags = 0; | |
1152 | for (i = 0; run_get_entry(&ni->file.run, i, &vcn, &lcn, &len); i++) { | |
1153 | if (lcn == SPARSE_LCN) | |
1154 | continue; | |
1155 | ||
1156 | bad_len += len; | |
1157 | bad_frags += 1; | |
1158 | if (sb_rdonly(sb)) | |
1159 | continue; | |
1160 | ||
1161 | if (wnd_set_used_safe(&sbi->used.bitmap, lcn, len, &tt) || tt) { | |
1162 | /* Bad blocks marked as free in bitmap. */ | |
1163 | ntfs_set_state(sbi, NTFS_DIRTY_ERROR); | |
1164 | } | |
1165 | } | |
1166 | if (bad_len) { | |
1167 | /* | |
1168 | * Notice about bad blocks. | |
1169 | * In normal cases these blocks are marked as used in bitmap. | |
1170 | * And we never allocate space in it. | |
1171 | */ | |
1172 | ntfs_notice(sb, | |
1173 | "Volume contains %zu bad blocks in %zu fragments.", | |
1174 | bad_len, bad_frags); | |
1175 | } | |
1176 | iput(inode); | |
1177 | ||
e8b8e97f | 1178 | /* Load $AttrDef. */ |
82cae269 KK |
1179 | ref.low = cpu_to_le32(MFT_REC_ATTR); |
1180 | ref.seq = cpu_to_le16(MFT_REC_ATTR); | |
b4f110d6 | 1181 | inode = ntfs_iget5(sb, &ref, &NAME_ATTRDEF); |
82cae269 | 1182 | if (IS_ERR(inode)) { |
82cae269 | 1183 | ntfs_err(sb, "Failed to load $AttrDef -> %d", err); |
9b75450d KK |
1184 | err = PTR_ERR(inode); |
1185 | goto out; | |
82cae269 KK |
1186 | } |
1187 | ||
1188 | if (inode->i_size < sizeof(struct ATTR_DEF_ENTRY)) { | |
1189 | err = -EINVAL; | |
9b75450d | 1190 | goto put_inode_out; |
82cae269 KK |
1191 | } |
1192 | bytes = inode->i_size; | |
59bfd7a4 | 1193 | sbi->def_table = t = kmalloc(bytes, GFP_NOFS | __GFP_NOWARN); |
82cae269 KK |
1194 | if (!t) { |
1195 | err = -ENOMEM; | |
9b75450d | 1196 | goto put_inode_out; |
82cae269 KK |
1197 | } |
1198 | ||
1199 | for (done = idx = 0; done < bytes; done += PAGE_SIZE, idx++) { | |
1200 | unsigned long tail = bytes - done; | |
1201 | struct page *page = ntfs_map_page(inode->i_mapping, idx); | |
1202 | ||
1203 | if (IS_ERR(page)) { | |
1204 | err = PTR_ERR(page); | |
9b75450d | 1205 | goto put_inode_out; |
82cae269 KK |
1206 | } |
1207 | memcpy(Add2Ptr(t, done), page_address(page), | |
1208 | min(PAGE_SIZE, tail)); | |
1209 | ntfs_unmap_page(page); | |
1210 | ||
1211 | if (!idx && ATTR_STD != t->type) { | |
1212 | err = -EINVAL; | |
9b75450d | 1213 | goto put_inode_out; |
82cae269 KK |
1214 | } |
1215 | } | |
1216 | ||
1217 | t += 1; | |
1218 | sbi->def_entries = 1; | |
1219 | done = sizeof(struct ATTR_DEF_ENTRY); | |
1220 | sbi->reparse.max_size = MAXIMUM_REPARSE_DATA_BUFFER_SIZE; | |
f8d87ed9 | 1221 | sbi->ea_max_size = 0x10000; /* default formatter value */ |
82cae269 KK |
1222 | |
1223 | while (done + sizeof(struct ATTR_DEF_ENTRY) <= bytes) { | |
1224 | u32 t32 = le32_to_cpu(t->type); | |
1225 | u64 sz = le64_to_cpu(t->max_sz); | |
1226 | ||
1227 | if ((t32 & 0xF) || le32_to_cpu(t[-1].type) >= t32) | |
1228 | break; | |
1229 | ||
1230 | if (t->type == ATTR_REPARSE) | |
1231 | sbi->reparse.max_size = sz; | |
1232 | else if (t->type == ATTR_EA) | |
1233 | sbi->ea_max_size = sz; | |
1234 | ||
1235 | done += sizeof(struct ATTR_DEF_ENTRY); | |
1236 | t += 1; | |
1237 | sbi->def_entries += 1; | |
1238 | } | |
1239 | iput(inode); | |
1240 | ||
e8b8e97f | 1241 | /* Load $UpCase. */ |
82cae269 KK |
1242 | ref.low = cpu_to_le32(MFT_REC_UPCASE); |
1243 | ref.seq = cpu_to_le16(MFT_REC_UPCASE); | |
1244 | inode = ntfs_iget5(sb, &ref, &NAME_UPCASE); | |
1245 | if (IS_ERR(inode)) { | |
0412016e | 1246 | ntfs_err(sb, "Failed to load $UpCase."); |
9b75450d KK |
1247 | err = PTR_ERR(inode); |
1248 | goto out; | |
82cae269 KK |
1249 | } |
1250 | ||
82cae269 KK |
1251 | if (inode->i_size != 0x10000 * sizeof(short)) { |
1252 | err = -EINVAL; | |
9b75450d | 1253 | goto put_inode_out; |
82cae269 KK |
1254 | } |
1255 | ||
82cae269 KK |
1256 | for (idx = 0; idx < (0x10000 * sizeof(short) >> PAGE_SHIFT); idx++) { |
1257 | const __le16 *src; | |
0056b273 | 1258 | u16 *dst = Add2Ptr(sbi->upcase, idx << PAGE_SHIFT); |
82cae269 KK |
1259 | struct page *page = ntfs_map_page(inode->i_mapping, idx); |
1260 | ||
1261 | if (IS_ERR(page)) { | |
1262 | err = PTR_ERR(page); | |
9b75450d | 1263 | goto put_inode_out; |
82cae269 KK |
1264 | } |
1265 | ||
1266 | src = page_address(page); | |
1267 | ||
1268 | #ifdef __BIG_ENDIAN | |
1269 | for (i = 0; i < PAGE_SIZE / sizeof(u16); i++) | |
1270 | *dst++ = le16_to_cpu(*src++); | |
1271 | #else | |
1272 | memcpy(dst, src, PAGE_SIZE); | |
1273 | #endif | |
1274 | ntfs_unmap_page(page); | |
1275 | } | |
1276 | ||
0056b273 KA |
1277 | shared = ntfs_set_shared(sbi->upcase, 0x10000 * sizeof(short)); |
1278 | if (shared && sbi->upcase != shared) { | |
1279 | kvfree(sbi->upcase); | |
82cae269 | 1280 | sbi->upcase = shared; |
82cae269 KK |
1281 | } |
1282 | ||
1283 | iput(inode); | |
82cae269 KK |
1284 | |
1285 | if (is_ntfs3(sbi)) { | |
e8b8e97f | 1286 | /* Load $Secure. */ |
82cae269 KK |
1287 | err = ntfs_security_init(sbi); |
1288 | if (err) | |
9b75450d | 1289 | goto out; |
82cae269 | 1290 | |
e8b8e97f | 1291 | /* Load $Extend. */ |
82cae269 KK |
1292 | err = ntfs_extend_init(sbi); |
1293 | if (err) | |
1294 | goto load_root; | |
1295 | ||
e8b8e97f | 1296 | /* Load $Extend\$Reparse. */ |
82cae269 KK |
1297 | err = ntfs_reparse_init(sbi); |
1298 | if (err) | |
1299 | goto load_root; | |
1300 | ||
e8b8e97f | 1301 | /* Load $Extend\$ObjId. */ |
82cae269 KK |
1302 | err = ntfs_objid_init(sbi); |
1303 | if (err) | |
1304 | goto load_root; | |
1305 | } | |
1306 | ||
1307 | load_root: | |
e8b8e97f | 1308 | /* Load root. */ |
82cae269 KK |
1309 | ref.low = cpu_to_le32(MFT_REC_ROOT); |
1310 | ref.seq = cpu_to_le16(MFT_REC_ROOT); | |
1311 | inode = ntfs_iget5(sb, &ref, &NAME_ROOT); | |
c1ca8ef0 | 1312 | if (IS_ERR(inode) || !inode->i_op) { |
82cae269 | 1313 | ntfs_err(sb, "Failed to load root."); |
c1ca8ef0 | 1314 | err = IS_ERR(inode) ? PTR_ERR(inode) : -EINVAL; |
9b75450d | 1315 | goto out; |
82cae269 KK |
1316 | } |
1317 | ||
82cae269 | 1318 | sb->s_root = d_make_root(inode); |
9b75450d KK |
1319 | if (!sb->s_root) { |
1320 | err = -ENOMEM; | |
1321 | goto put_inode_out; | |
1322 | } | |
82cae269 KK |
1323 | |
1324 | return 0; | |
9b75450d KK |
1325 | |
1326 | put_inode_out: | |
82cae269 | 1327 | iput(inode); |
9b75450d KK |
1328 | out: |
1329 | /* | |
1330 | * Free resources here. | |
1331 | * ntfs_fs_free will be called with fc->s_fs_info = NULL | |
1332 | */ | |
51e76a23 | 1333 | put_mount_options(sbi->options); |
9b75450d KK |
1334 | put_ntfs(sbi); |
1335 | sb->s_fs_info = NULL; | |
1336 | ||
82cae269 KK |
1337 | return err; |
1338 | } | |
1339 | ||
1340 | void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len) | |
1341 | { | |
1342 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
1343 | struct block_device *bdev = sb->s_bdev; | |
1344 | sector_t devblock = (u64)lcn * sbi->blocks_per_cluster; | |
1345 | unsigned long blocks = (u64)len * sbi->blocks_per_cluster; | |
1346 | unsigned long cnt = 0; | |
1347 | unsigned long limit = global_zone_page_state(NR_FREE_PAGES) | |
1348 | << (PAGE_SHIFT - sb->s_blocksize_bits); | |
1349 | ||
1350 | if (limit >= 0x2000) | |
1351 | limit -= 0x1000; | |
1352 | else if (limit < 32) | |
1353 | limit = 32; | |
1354 | else | |
1355 | limit >>= 1; | |
1356 | ||
1357 | while (blocks--) { | |
1358 | clean_bdev_aliases(bdev, devblock++, 1); | |
1359 | if (cnt++ >= limit) { | |
1360 | sync_blockdev(bdev); | |
1361 | cnt = 0; | |
1362 | } | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | /* | |
e8b8e97f | 1367 | * ntfs_discard - Issue a discard request (trim for SSD). |
82cae269 KK |
1368 | */ |
1369 | int ntfs_discard(struct ntfs_sb_info *sbi, CLST lcn, CLST len) | |
1370 | { | |
1371 | int err; | |
1372 | u64 lbo, bytes, start, end; | |
1373 | struct super_block *sb; | |
1374 | ||
1375 | if (sbi->used.next_free_lcn == lcn + len) | |
1376 | sbi->used.next_free_lcn = lcn; | |
1377 | ||
1378 | if (sbi->flags & NTFS_FLAGS_NODISCARD) | |
1379 | return -EOPNOTSUPP; | |
1380 | ||
564c97bd | 1381 | if (!sbi->options->discard) |
82cae269 KK |
1382 | return -EOPNOTSUPP; |
1383 | ||
1384 | lbo = (u64)lcn << sbi->cluster_bits; | |
1385 | bytes = (u64)len << sbi->cluster_bits; | |
1386 | ||
e8b8e97f | 1387 | /* Align up 'start' on discard_granularity. */ |
82cae269 KK |
1388 | start = (lbo + sbi->discard_granularity - 1) & |
1389 | sbi->discard_granularity_mask_inv; | |
e8b8e97f | 1390 | /* Align down 'end' on discard_granularity. */ |
82cae269 KK |
1391 | end = (lbo + bytes) & sbi->discard_granularity_mask_inv; |
1392 | ||
1393 | sb = sbi->sb; | |
1394 | if (start >= end) | |
1395 | return 0; | |
1396 | ||
1397 | err = blkdev_issue_discard(sb->s_bdev, start >> 9, (end - start) >> 9, | |
44abff2c | 1398 | GFP_NOFS); |
82cae269 KK |
1399 | |
1400 | if (err == -EOPNOTSUPP) | |
1401 | sbi->flags |= NTFS_FLAGS_NODISCARD; | |
1402 | ||
1403 | return err; | |
1404 | } | |
1405 | ||
610f8f5a KA |
1406 | static int ntfs_fs_get_tree(struct fs_context *fc) |
1407 | { | |
1408 | return get_tree_bdev(fc, ntfs_fill_super); | |
1409 | } | |
1410 | ||
1411 | /* | |
1412 | * ntfs_fs_free - Free fs_context. | |
1413 | * | |
1414 | * Note that this will be called after fill_super and reconfigure | |
1415 | * even when they pass. So they have to take pointers if they pass. | |
1416 | */ | |
1417 | static void ntfs_fs_free(struct fs_context *fc) | |
1418 | { | |
1419 | struct ntfs_mount_options *opts = fc->fs_private; | |
1420 | struct ntfs_sb_info *sbi = fc->s_fs_info; | |
1421 | ||
1422 | if (sbi) | |
1423 | put_ntfs(sbi); | |
1424 | ||
1425 | if (opts) | |
1426 | put_mount_options(opts); | |
1427 | } | |
1428 | ||
1429 | static const struct fs_context_operations ntfs_context_ops = { | |
1430 | .parse_param = ntfs_fs_parse_param, | |
1431 | .get_tree = ntfs_fs_get_tree, | |
1432 | .reconfigure = ntfs_fs_reconfigure, | |
1433 | .free = ntfs_fs_free, | |
1434 | }; | |
1435 | ||
1436 | /* | |
1437 | * ntfs_init_fs_context - Initialize spi and opts | |
1438 | * | |
6700eabb | 1439 | * This will called when mount/remount. We will first initialize |
610f8f5a KA |
1440 | * options so that if remount we can use just that. |
1441 | */ | |
1442 | static int ntfs_init_fs_context(struct fs_context *fc) | |
82cae269 | 1443 | { |
610f8f5a KA |
1444 | struct ntfs_mount_options *opts; |
1445 | struct ntfs_sb_info *sbi; | |
1446 | ||
1447 | opts = kzalloc(sizeof(struct ntfs_mount_options), GFP_NOFS); | |
1448 | if (!opts) | |
1449 | return -ENOMEM; | |
1450 | ||
1451 | /* Default options. */ | |
1452 | opts->fs_uid = current_uid(); | |
1453 | opts->fs_gid = current_gid(); | |
1454 | opts->fs_fmask_inv = ~current_umask(); | |
1455 | opts->fs_dmask_inv = ~current_umask(); | |
1456 | ||
1457 | if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) | |
1458 | goto ok; | |
1459 | ||
1460 | sbi = kzalloc(sizeof(struct ntfs_sb_info), GFP_NOFS); | |
27fac777 KA |
1461 | if (!sbi) |
1462 | goto free_opts; | |
1463 | ||
1464 | sbi->upcase = kvmalloc(0x10000 * sizeof(short), GFP_KERNEL); | |
1465 | if (!sbi->upcase) | |
1466 | goto free_sbi; | |
1467 | ||
1468 | ratelimit_state_init(&sbi->msg_ratelimit, DEFAULT_RATELIMIT_INTERVAL, | |
1469 | DEFAULT_RATELIMIT_BURST); | |
1470 | ||
1471 | mutex_init(&sbi->compress.mtx_lznt); | |
1472 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
1473 | mutex_init(&sbi->compress.mtx_xpress); | |
1474 | mutex_init(&sbi->compress.mtx_lzx); | |
1475 | #endif | |
610f8f5a | 1476 | |
610f8f5a KA |
1477 | fc->s_fs_info = sbi; |
1478 | ok: | |
1479 | fc->fs_private = opts; | |
1480 | fc->ops = &ntfs_context_ops; | |
1481 | ||
1482 | return 0; | |
27fac777 KA |
1483 | free_sbi: |
1484 | kfree(sbi); | |
880301bb CIK |
1485 | free_opts: |
1486 | kfree(opts); | |
27fac777 | 1487 | return -ENOMEM; |
82cae269 KK |
1488 | } |
1489 | ||
1490 | // clang-format off | |
1491 | static struct file_system_type ntfs_fs_type = { | |
610f8f5a KA |
1492 | .owner = THIS_MODULE, |
1493 | .name = "ntfs3", | |
1494 | .init_fs_context = ntfs_init_fs_context, | |
1495 | .parameters = ntfs_fs_parameters, | |
1496 | .kill_sb = kill_block_super, | |
1497 | .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, | |
82cae269 KK |
1498 | }; |
1499 | // clang-format on | |
1500 | ||
1501 | static int __init init_ntfs_fs(void) | |
1502 | { | |
1503 | int err; | |
1504 | ||
2e3a51b5 | 1505 | pr_info("ntfs3: Max link count %u\n", NTFS_LINK_MAX); |
82cae269 | 1506 | |
2e3a51b5 KA |
1507 | if (IS_ENABLED(CONFIG_NTFS3_FS_POSIX_ACL)) |
1508 | pr_info("ntfs3: Enabled Linux POSIX ACLs support\n"); | |
1509 | if (IS_ENABLED(CONFIG_NTFS3_64BIT_CLUSTER)) | |
1510 | pr_notice("ntfs3: Warning: Activated 64 bits per cluster. Windows does not support this\n"); | |
1511 | if (IS_ENABLED(CONFIG_NTFS3_LZX_XPRESS)) | |
1512 | pr_info("ntfs3: Read-only LZX/Xpress compression included\n"); | |
82cae269 KK |
1513 | |
1514 | err = ntfs3_init_bitmap(); | |
1515 | if (err) | |
1516 | return err; | |
1517 | ||
1518 | ntfs_inode_cachep = kmem_cache_create( | |
1519 | "ntfs_inode_cache", sizeof(struct ntfs_inode), 0, | |
1520 | (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD | SLAB_ACCOUNT), | |
1521 | init_once); | |
1522 | if (!ntfs_inode_cachep) { | |
1523 | err = -ENOMEM; | |
1524 | goto out1; | |
1525 | } | |
1526 | ||
1527 | err = register_filesystem(&ntfs_fs_type); | |
1528 | if (err) | |
1529 | goto out; | |
1530 | ||
1531 | return 0; | |
1532 | out: | |
1533 | kmem_cache_destroy(ntfs_inode_cachep); | |
1534 | out1: | |
1535 | ntfs3_exit_bitmap(); | |
1536 | return err; | |
1537 | } | |
1538 | ||
1539 | static void __exit exit_ntfs_fs(void) | |
1540 | { | |
ae6b47b5 KK |
1541 | rcu_barrier(); |
1542 | kmem_cache_destroy(ntfs_inode_cachep); | |
82cae269 KK |
1543 | unregister_filesystem(&ntfs_fs_type); |
1544 | ntfs3_exit_bitmap(); | |
1545 | } | |
1546 | ||
1547 | MODULE_LICENSE("GPL"); | |
1548 | MODULE_DESCRIPTION("ntfs3 read/write filesystem"); | |
82cae269 KK |
1549 | #ifdef CONFIG_NTFS3_FS_POSIX_ACL |
1550 | MODULE_INFO(behaviour, "Enabled Linux POSIX ACLs support"); | |
1551 | #endif | |
1552 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER | |
2e3a51b5 | 1553 | MODULE_INFO(cluster, "Warning: Activated 64 bits per cluster. Windows does not support this"); |
82cae269 KK |
1554 | #endif |
1555 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
1556 | MODULE_INFO(compression, "Read-only lzx/xpress compression included"); | |
1557 | #endif | |
1558 | ||
1559 | MODULE_AUTHOR("Konstantin Komarov"); | |
1560 | MODULE_ALIAS_FS("ntfs3"); | |
1561 | ||
1562 | module_init(init_ntfs_fs); | |
1563 | module_exit(exit_ntfs_fs); |