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TOMOYO Linux Cross Reference
Linux/fs/ecryptfs/inode.c

Version: ~ [ linux-5.5-rc7 ] ~ [ linux-5.4.13 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.97 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.166 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.210 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.210 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  1 /**
  2  * eCryptfs: Linux filesystem encryption layer
  3  *
  4  * Copyright (C) 1997-2004 Erez Zadok
  5  * Copyright (C) 2001-2004 Stony Brook University
  6  * Copyright (C) 2004-2007 International Business Machines Corp.
  7  *   Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
  8  *              Michael C. Thompsion <mcthomps@us.ibm.com>
  9  *
 10  * This program is free software; you can redistribute it and/or
 11  * modify it under the terms of the GNU General Public License as
 12  * published by the Free Software Foundation; either version 2 of the
 13  * License, or (at your option) any later version.
 14  *
 15  * This program is distributed in the hope that it will be useful, but
 16  * WITHOUT ANY WARRANTY; without even the implied warranty of
 17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 18  * General Public License for more details.
 19  *
 20  * You should have received a copy of the GNU General Public License
 21  * along with this program; if not, write to the Free Software
 22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 23  * 02111-1307, USA.
 24  */
 25 
 26 #include <linux/file.h>
 27 #include <linux/vmalloc.h>
 28 #include <linux/pagemap.h>
 29 #include <linux/dcache.h>
 30 #include <linux/namei.h>
 31 #include <linux/mount.h>
 32 #include <linux/crypto.h>
 33 #include <linux/fs_stack.h>
 34 #include <linux/slab.h>
 35 #include <linux/xattr.h>
 36 #include <asm/unaligned.h>
 37 #include "ecryptfs_kernel.h"
 38 
 39 static struct dentry *lock_parent(struct dentry *dentry)
 40 {
 41         struct dentry *dir;
 42 
 43         dir = dget_parent(dentry);
 44         mutex_lock_nested(&(dir->d_inode->i_mutex), I_MUTEX_PARENT);
 45         return dir;
 46 }
 47 
 48 static void unlock_dir(struct dentry *dir)
 49 {
 50         mutex_unlock(&dir->d_inode->i_mutex);
 51         dput(dir);
 52 }
 53 
 54 static int ecryptfs_inode_test(struct inode *inode, void *lower_inode)
 55 {
 56         return ecryptfs_inode_to_lower(inode) == lower_inode;
 57 }
 58 
 59 static int ecryptfs_inode_set(struct inode *inode, void *opaque)
 60 {
 61         struct inode *lower_inode = opaque;
 62 
 63         ecryptfs_set_inode_lower(inode, lower_inode);
 64         fsstack_copy_attr_all(inode, lower_inode);
 65         /* i_size will be overwritten for encrypted regular files */
 66         fsstack_copy_inode_size(inode, lower_inode);
 67         inode->i_ino = lower_inode->i_ino;
 68         inode->i_version++;
 69         inode->i_mapping->a_ops = &ecryptfs_aops;
 70         inode->i_mapping->backing_dev_info = inode->i_sb->s_bdi;
 71 
 72         if (S_ISLNK(inode->i_mode))
 73                 inode->i_op = &ecryptfs_symlink_iops;
 74         else if (S_ISDIR(inode->i_mode))
 75                 inode->i_op = &ecryptfs_dir_iops;
 76         else
 77                 inode->i_op = &ecryptfs_main_iops;
 78 
 79         if (S_ISDIR(inode->i_mode))
 80                 inode->i_fop = &ecryptfs_dir_fops;
 81         else if (special_file(inode->i_mode))
 82                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 83         else
 84                 inode->i_fop = &ecryptfs_main_fops;
 85 
 86         return 0;
 87 }
 88 
 89 static struct inode *__ecryptfs_get_inode(struct inode *lower_inode,
 90                                           struct super_block *sb)
 91 {
 92         struct inode *inode;
 93 
 94         if (lower_inode->i_sb != ecryptfs_superblock_to_lower(sb))
 95                 return ERR_PTR(-EXDEV);
 96         if (!igrab(lower_inode))
 97                 return ERR_PTR(-ESTALE);
 98         inode = iget5_locked(sb, (unsigned long)lower_inode,
 99                              ecryptfs_inode_test, ecryptfs_inode_set,
100                              lower_inode);
101         if (!inode) {
102                 iput(lower_inode);
103                 return ERR_PTR(-EACCES);
104         }
105         if (!(inode->i_state & I_NEW))
106                 iput(lower_inode);
107 
108         return inode;
109 }
110 
111 struct inode *ecryptfs_get_inode(struct inode *lower_inode,
112                                  struct super_block *sb)
113 {
114         struct inode *inode = __ecryptfs_get_inode(lower_inode, sb);
115 
116         if (!IS_ERR(inode) && (inode->i_state & I_NEW))
117                 unlock_new_inode(inode);
118 
119         return inode;
120 }
121 
122 /**
123  * ecryptfs_interpose
124  * @lower_dentry: Existing dentry in the lower filesystem
125  * @dentry: ecryptfs' dentry
126  * @sb: ecryptfs's super_block
127  *
128  * Interposes upper and lower dentries.
129  *
130  * Returns zero on success; non-zero otherwise
131  */
132 static int ecryptfs_interpose(struct dentry *lower_dentry,
133                               struct dentry *dentry, struct super_block *sb)
134 {
135         struct inode *inode = ecryptfs_get_inode(lower_dentry->d_inode, sb);
136 
137         if (IS_ERR(inode))
138                 return PTR_ERR(inode);
139         d_instantiate(dentry, inode);
140 
141         return 0;
142 }
143 
144 static int ecryptfs_do_unlink(struct inode *dir, struct dentry *dentry,
145                               struct inode *inode)
146 {
147         struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
148         struct inode *lower_dir_inode = ecryptfs_inode_to_lower(dir);
149         struct dentry *lower_dir_dentry;
150         int rc;
151 
152         dget(lower_dentry);
153         lower_dir_dentry = lock_parent(lower_dentry);
154         rc = vfs_unlink(lower_dir_inode, lower_dentry, NULL);
155         if (rc) {
156                 printk(KERN_ERR "Error in vfs_unlink; rc = [%d]\n", rc);
157                 goto out_unlock;
158         }
159         fsstack_copy_attr_times(dir, lower_dir_inode);
160         set_nlink(inode, ecryptfs_inode_to_lower(inode)->i_nlink);
161         inode->i_ctime = dir->i_ctime;
162         d_drop(dentry);
163 out_unlock:
164         unlock_dir(lower_dir_dentry);
165         dput(lower_dentry);
166         return rc;
167 }
168 
169 /**
170  * ecryptfs_do_create
171  * @directory_inode: inode of the new file's dentry's parent in ecryptfs
172  * @ecryptfs_dentry: New file's dentry in ecryptfs
173  * @mode: The mode of the new file
174  * @nd: nameidata of ecryptfs' parent's dentry & vfsmount
175  *
176  * Creates the underlying file and the eCryptfs inode which will link to
177  * it. It will also update the eCryptfs directory inode to mimic the
178  * stat of the lower directory inode.
179  *
180  * Returns the new eCryptfs inode on success; an ERR_PTR on error condition
181  */
182 static struct inode *
183 ecryptfs_do_create(struct inode *directory_inode,
184                    struct dentry *ecryptfs_dentry, umode_t mode)
185 {
186         int rc;
187         struct dentry *lower_dentry;
188         struct dentry *lower_dir_dentry;
189         struct inode *inode;
190 
191         lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
192         lower_dir_dentry = lock_parent(lower_dentry);
193         rc = vfs_create(lower_dir_dentry->d_inode, lower_dentry, mode, true);
194         if (rc) {
195                 printk(KERN_ERR "%s: Failure to create dentry in lower fs; "
196                        "rc = [%d]\n", __func__, rc);
197                 inode = ERR_PTR(rc);
198                 goto out_lock;
199         }
200         inode = __ecryptfs_get_inode(lower_dentry->d_inode,
201                                      directory_inode->i_sb);
202         if (IS_ERR(inode)) {
203                 vfs_unlink(lower_dir_dentry->d_inode, lower_dentry, NULL);
204                 goto out_lock;
205         }
206         fsstack_copy_attr_times(directory_inode, lower_dir_dentry->d_inode);
207         fsstack_copy_inode_size(directory_inode, lower_dir_dentry->d_inode);
208 out_lock:
209         unlock_dir(lower_dir_dentry);
210         return inode;
211 }
212 
213 /**
214  * ecryptfs_initialize_file
215  *
216  * Cause the file to be changed from a basic empty file to an ecryptfs
217  * file with a header and first data page.
218  *
219  * Returns zero on success
220  */
221 int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry,
222                              struct inode *ecryptfs_inode)
223 {
224         struct ecryptfs_crypt_stat *crypt_stat =
225                 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat;
226         int rc = 0;
227 
228         if (S_ISDIR(ecryptfs_inode->i_mode)) {
229                 ecryptfs_printk(KERN_DEBUG, "This is a directory\n");
230                 crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
231                 goto out;
232         }
233         ecryptfs_printk(KERN_DEBUG, "Initializing crypto context\n");
234         rc = ecryptfs_new_file_context(ecryptfs_inode);
235         if (rc) {
236                 ecryptfs_printk(KERN_ERR, "Error creating new file "
237                                 "context; rc = [%d]\n", rc);
238                 goto out;
239         }
240         rc = ecryptfs_get_lower_file(ecryptfs_dentry, ecryptfs_inode);
241         if (rc) {
242                 printk(KERN_ERR "%s: Error attempting to initialize "
243                         "the lower file for the dentry with name "
244                         "[%pd]; rc = [%d]\n", __func__,
245                         ecryptfs_dentry, rc);
246                 goto out;
247         }
248         rc = ecryptfs_write_metadata(ecryptfs_dentry, ecryptfs_inode);
249         if (rc)
250                 printk(KERN_ERR "Error writing headers; rc = [%d]\n", rc);
251         ecryptfs_put_lower_file(ecryptfs_inode);
252 out:
253         return rc;
254 }
255 
256 /**
257  * ecryptfs_create
258  * @dir: The inode of the directory in which to create the file.
259  * @dentry: The eCryptfs dentry
260  * @mode: The mode of the new file.
261  *
262  * Creates a new file.
263  *
264  * Returns zero on success; non-zero on error condition
265  */
266 static int
267 ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
268                 umode_t mode, bool excl)
269 {
270         struct inode *ecryptfs_inode;
271         int rc;
272 
273         ecryptfs_inode = ecryptfs_do_create(directory_inode, ecryptfs_dentry,
274                                             mode);
275         if (unlikely(IS_ERR(ecryptfs_inode))) {
276                 ecryptfs_printk(KERN_WARNING, "Failed to create file in"
277                                 "lower filesystem\n");
278                 rc = PTR_ERR(ecryptfs_inode);
279                 goto out;
280         }
281         /* At this point, a file exists on "disk"; we need to make sure
282          * that this on disk file is prepared to be an ecryptfs file */
283         rc = ecryptfs_initialize_file(ecryptfs_dentry, ecryptfs_inode);
284         if (rc) {
285                 ecryptfs_do_unlink(directory_inode, ecryptfs_dentry,
286                                    ecryptfs_inode);
287                 make_bad_inode(ecryptfs_inode);
288                 unlock_new_inode(ecryptfs_inode);
289                 iput(ecryptfs_inode);
290                 goto out;
291         }
292         d_instantiate_new(ecryptfs_dentry, ecryptfs_inode);
293 out:
294         return rc;
295 }
296 
297 static int ecryptfs_i_size_read(struct dentry *dentry, struct inode *inode)
298 {
299         struct ecryptfs_crypt_stat *crypt_stat;
300         int rc;
301 
302         rc = ecryptfs_get_lower_file(dentry, inode);
303         if (rc) {
304                 printk(KERN_ERR "%s: Error attempting to initialize "
305                         "the lower file for the dentry with name "
306                         "[%pd]; rc = [%d]\n", __func__,
307                         dentry, rc);
308                 return rc;
309         }
310 
311         crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
312         /* TODO: lock for crypt_stat comparison */
313         if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED))
314                 ecryptfs_set_default_sizes(crypt_stat);
315 
316         rc = ecryptfs_read_and_validate_header_region(inode);
317         ecryptfs_put_lower_file(inode);
318         if (rc) {
319                 rc = ecryptfs_read_and_validate_xattr_region(dentry, inode);
320                 if (!rc)
321                         crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR;
322         }
323 
324         /* Must return 0 to allow non-eCryptfs files to be looked up, too */
325         return 0;
326 }
327 
328 /**
329  * ecryptfs_lookup_interpose - Dentry interposition for a lookup
330  */
331 static int ecryptfs_lookup_interpose(struct dentry *dentry,
332                                      struct dentry *lower_dentry,
333                                      struct inode *dir_inode)
334 {
335         struct inode *inode, *lower_inode = lower_dentry->d_inode;
336         struct ecryptfs_dentry_info *dentry_info;
337         struct vfsmount *lower_mnt;
338         int rc = 0;
339 
340         dentry_info = kmem_cache_alloc(ecryptfs_dentry_info_cache, GFP_KERNEL);
341         if (!dentry_info) {
342                 printk(KERN_ERR "%s: Out of memory whilst attempting "
343                        "to allocate ecryptfs_dentry_info struct\n",
344                         __func__);
345                 dput(lower_dentry);
346                 return -ENOMEM;
347         }
348 
349         lower_mnt = mntget(ecryptfs_dentry_to_lower_mnt(dentry->d_parent));
350         fsstack_copy_attr_atime(dir_inode, lower_dentry->d_parent->d_inode);
351         BUG_ON(!d_count(lower_dentry));
352 
353         ecryptfs_set_dentry_private(dentry, dentry_info);
354         dentry_info->lower_path.mnt = lower_mnt;
355         dentry_info->lower_path.dentry = lower_dentry;
356 
357         if (!lower_dentry->d_inode) {
358                 /* We want to add because we couldn't find in lower */
359                 d_add(dentry, NULL);
360                 return 0;
361         }
362         inode = __ecryptfs_get_inode(lower_inode, dir_inode->i_sb);
363         if (IS_ERR(inode)) {
364                 printk(KERN_ERR "%s: Error interposing; rc = [%ld]\n",
365                        __func__, PTR_ERR(inode));
366                 return PTR_ERR(inode);
367         }
368         if (S_ISREG(inode->i_mode)) {
369                 rc = ecryptfs_i_size_read(dentry, inode);
370                 if (rc) {
371                         make_bad_inode(inode);
372                         return rc;
373                 }
374         }
375 
376         if (inode->i_state & I_NEW)
377                 unlock_new_inode(inode);
378         d_add(dentry, inode);
379 
380         return rc;
381 }
382 
383 /**
384  * ecryptfs_lookup
385  * @ecryptfs_dir_inode: The eCryptfs directory inode
386  * @ecryptfs_dentry: The eCryptfs dentry that we are looking up
387  * @ecryptfs_nd: nameidata; may be NULL
388  *
389  * Find a file on disk. If the file does not exist, then we'll add it to the
390  * dentry cache and continue on to read it from the disk.
391  */
392 static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
393                                       struct dentry *ecryptfs_dentry,
394                                       unsigned int flags)
395 {
396         char *encrypted_and_encoded_name = NULL;
397         size_t encrypted_and_encoded_name_size;
398         struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;
399         struct dentry *lower_dir_dentry, *lower_dentry;
400         int rc = 0;
401 
402         lower_dir_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry->d_parent);
403         mutex_lock(&lower_dir_dentry->d_inode->i_mutex);
404         lower_dentry = lookup_one_len(ecryptfs_dentry->d_name.name,
405                                       lower_dir_dentry,
406                                       ecryptfs_dentry->d_name.len);
407         mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
408         if (IS_ERR(lower_dentry)) {
409                 rc = PTR_ERR(lower_dentry);
410                 ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
411                                 "[%d] on lower_dentry = [%pd]\n", __func__, rc,
412                                 ecryptfs_dentry);
413                 goto out;
414         }
415         if (lower_dentry->d_inode)
416                 goto interpose;
417         mount_crypt_stat = &ecryptfs_superblock_to_private(
418                                 ecryptfs_dentry->d_sb)->mount_crypt_stat;
419         if (!(mount_crypt_stat
420             && (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)))
421                 goto interpose;
422         dput(lower_dentry);
423         rc = ecryptfs_encrypt_and_encode_filename(
424                 &encrypted_and_encoded_name, &encrypted_and_encoded_name_size,
425                 NULL, mount_crypt_stat, ecryptfs_dentry->d_name.name,
426                 ecryptfs_dentry->d_name.len);
427         if (rc) {
428                 printk(KERN_ERR "%s: Error attempting to encrypt and encode "
429                        "filename; rc = [%d]\n", __func__, rc);
430                 goto out;
431         }
432         mutex_lock(&lower_dir_dentry->d_inode->i_mutex);
433         lower_dentry = lookup_one_len(encrypted_and_encoded_name,
434                                       lower_dir_dentry,
435                                       encrypted_and_encoded_name_size);
436         mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
437         if (IS_ERR(lower_dentry)) {
438                 rc = PTR_ERR(lower_dentry);
439                 ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
440                                 "[%d] on lower_dentry = [%s]\n", __func__, rc,
441                                 encrypted_and_encoded_name);
442                 goto out;
443         }
444 interpose:
445         rc = ecryptfs_lookup_interpose(ecryptfs_dentry, lower_dentry,
446                                        ecryptfs_dir_inode);
447 out:
448         kfree(encrypted_and_encoded_name);
449         return ERR_PTR(rc);
450 }
451 
452 static int ecryptfs_link(struct dentry *old_dentry, struct inode *dir,
453                          struct dentry *new_dentry)
454 {
455         struct dentry *lower_old_dentry;
456         struct dentry *lower_new_dentry;
457         struct dentry *lower_dir_dentry;
458         u64 file_size_save;
459         int rc;
460 
461         file_size_save = i_size_read(old_dentry->d_inode);
462         lower_old_dentry = ecryptfs_dentry_to_lower(old_dentry);
463         lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry);
464         dget(lower_old_dentry);
465         dget(lower_new_dentry);
466         lower_dir_dentry = lock_parent(lower_new_dentry);
467         rc = vfs_link(lower_old_dentry, lower_dir_dentry->d_inode,
468                       lower_new_dentry, NULL);
469         if (rc || !lower_new_dentry->d_inode)
470                 goto out_lock;
471         rc = ecryptfs_interpose(lower_new_dentry, new_dentry, dir->i_sb);
472         if (rc)
473                 goto out_lock;
474         fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
475         fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
476         set_nlink(old_dentry->d_inode,
477                   ecryptfs_inode_to_lower(old_dentry->d_inode)->i_nlink);
478         i_size_write(new_dentry->d_inode, file_size_save);
479 out_lock:
480         unlock_dir(lower_dir_dentry);
481         dput(lower_new_dentry);
482         dput(lower_old_dentry);
483         return rc;
484 }
485 
486 static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry)
487 {
488         return ecryptfs_do_unlink(dir, dentry, dentry->d_inode);
489 }
490 
491 static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
492                             const char *symname)
493 {
494         int rc;
495         struct dentry *lower_dentry;
496         struct dentry *lower_dir_dentry;
497         char *encoded_symname;
498         size_t encoded_symlen;
499         struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;
500 
501         lower_dentry = ecryptfs_dentry_to_lower(dentry);
502         dget(lower_dentry);
503         lower_dir_dentry = lock_parent(lower_dentry);
504         mount_crypt_stat = &ecryptfs_superblock_to_private(
505                 dir->i_sb)->mount_crypt_stat;
506         rc = ecryptfs_encrypt_and_encode_filename(&encoded_symname,
507                                                   &encoded_symlen,
508                                                   NULL,
509                                                   mount_crypt_stat, symname,
510                                                   strlen(symname));
511         if (rc)
512                 goto out_lock;
513         rc = vfs_symlink(lower_dir_dentry->d_inode, lower_dentry,
514                          encoded_symname);
515         kfree(encoded_symname);
516         if (rc || !lower_dentry->d_inode)
517                 goto out_lock;
518         rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);
519         if (rc)
520                 goto out_lock;
521         fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
522         fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
523 out_lock:
524         unlock_dir(lower_dir_dentry);
525         dput(lower_dentry);
526         if (!dentry->d_inode)
527                 d_drop(dentry);
528         return rc;
529 }
530 
531 static int ecryptfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
532 {
533         int rc;
534         struct dentry *lower_dentry;
535         struct dentry *lower_dir_dentry;
536 
537         lower_dentry = ecryptfs_dentry_to_lower(dentry);
538         lower_dir_dentry = lock_parent(lower_dentry);
539         rc = vfs_mkdir(lower_dir_dentry->d_inode, lower_dentry, mode);
540         if (rc || !lower_dentry->d_inode)
541                 goto out;
542         rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);
543         if (rc)
544                 goto out;
545         fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
546         fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
547         set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
548 out:
549         unlock_dir(lower_dir_dentry);
550         if (!dentry->d_inode)
551                 d_drop(dentry);
552         return rc;
553 }
554 
555 static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
556 {
557         struct dentry *lower_dentry;
558         struct dentry *lower_dir_dentry;
559         int rc;
560 
561         lower_dentry = ecryptfs_dentry_to_lower(dentry);
562         dget(dentry);
563         lower_dir_dentry = lock_parent(lower_dentry);
564         dget(lower_dentry);
565         rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
566         dput(lower_dentry);
567         if (!rc && dentry->d_inode)
568                 clear_nlink(dentry->d_inode);
569         fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
570         set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
571         unlock_dir(lower_dir_dentry);
572         if (!rc)
573                 d_drop(dentry);
574         dput(dentry);
575         return rc;
576 }
577 
578 static int
579 ecryptfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
580 {
581         int rc;
582         struct dentry *lower_dentry;
583         struct dentry *lower_dir_dentry;
584 
585         lower_dentry = ecryptfs_dentry_to_lower(dentry);
586         lower_dir_dentry = lock_parent(lower_dentry);
587         rc = vfs_mknod(lower_dir_dentry->d_inode, lower_dentry, mode, dev);
588         if (rc || !lower_dentry->d_inode)
589                 goto out;
590         rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);
591         if (rc)
592                 goto out;
593         fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
594         fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
595 out:
596         unlock_dir(lower_dir_dentry);
597         if (!dentry->d_inode)
598                 d_drop(dentry);
599         return rc;
600 }
601 
602 static int
603 ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
604                 struct inode *new_dir, struct dentry *new_dentry)
605 {
606         int rc;
607         struct dentry *lower_old_dentry;
608         struct dentry *lower_new_dentry;
609         struct dentry *lower_old_dir_dentry;
610         struct dentry *lower_new_dir_dentry;
611         struct dentry *trap = NULL;
612         struct inode *target_inode;
613 
614         lower_old_dentry = ecryptfs_dentry_to_lower(old_dentry);
615         lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry);
616         dget(lower_old_dentry);
617         dget(lower_new_dentry);
618         lower_old_dir_dentry = dget_parent(lower_old_dentry);
619         lower_new_dir_dentry = dget_parent(lower_new_dentry);
620         target_inode = new_dentry->d_inode;
621         trap = lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
622         /* source should not be ancestor of target */
623         if (trap == lower_old_dentry) {
624                 rc = -EINVAL;
625                 goto out_lock;
626         }
627         /* target should not be ancestor of source */
628         if (trap == lower_new_dentry) {
629                 rc = -ENOTEMPTY;
630                 goto out_lock;
631         }
632         rc = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry,
633                         lower_new_dir_dentry->d_inode, lower_new_dentry,
634                         NULL, 0);
635         if (rc)
636                 goto out_lock;
637         if (target_inode)
638                 fsstack_copy_attr_all(target_inode,
639                                       ecryptfs_inode_to_lower(target_inode));
640         fsstack_copy_attr_all(new_dir, lower_new_dir_dentry->d_inode);
641         if (new_dir != old_dir)
642                 fsstack_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode);
643 out_lock:
644         unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
645         dput(lower_new_dir_dentry);
646         dput(lower_old_dir_dentry);
647         dput(lower_new_dentry);
648         dput(lower_old_dentry);
649         return rc;
650 }
651 
652 static char *ecryptfs_readlink_lower(struct dentry *dentry, size_t *bufsiz)
653 {
654         struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
655         char *lower_buf;
656         char *buf;
657         mm_segment_t old_fs;
658         int rc;
659 
660         lower_buf = kmalloc(PATH_MAX, GFP_KERNEL);
661         if (!lower_buf)
662                 return ERR_PTR(-ENOMEM);
663         old_fs = get_fs();
664         set_fs(get_ds());
665         rc = lower_dentry->d_inode->i_op->readlink(lower_dentry,
666                                                    (char __user *)lower_buf,
667                                                    PATH_MAX);
668         set_fs(old_fs);
669         if (rc < 0)
670                 goto out;
671         rc = ecryptfs_decode_and_decrypt_filename(&buf, bufsiz, dentry->d_sb,
672                                                   lower_buf, rc);
673 out:
674         kfree(lower_buf);
675         return rc ? ERR_PTR(rc) : buf;
676 }
677 
678 static void *ecryptfs_follow_link(struct dentry *dentry, struct nameidata *nd)
679 {
680         size_t len;
681         char *buf = ecryptfs_readlink_lower(dentry, &len);
682         if (IS_ERR(buf))
683                 goto out;
684         fsstack_copy_attr_atime(dentry->d_inode,
685                                 ecryptfs_dentry_to_lower(dentry)->d_inode);
686         buf[len] = '\0';
687 out:
688         nd_set_link(nd, buf);
689         return NULL;
690 }
691 
692 /**
693  * upper_size_to_lower_size
694  * @crypt_stat: Crypt_stat associated with file
695  * @upper_size: Size of the upper file
696  *
697  * Calculate the required size of the lower file based on the
698  * specified size of the upper file. This calculation is based on the
699  * number of headers in the underlying file and the extent size.
700  *
701  * Returns Calculated size of the lower file.
702  */
703 static loff_t
704 upper_size_to_lower_size(struct ecryptfs_crypt_stat *crypt_stat,
705                          loff_t upper_size)
706 {
707         loff_t lower_size;
708 
709         lower_size = ecryptfs_lower_header_size(crypt_stat);
710         if (upper_size != 0) {
711                 loff_t num_extents;
712 
713                 num_extents = upper_size >> crypt_stat->extent_shift;
714                 if (upper_size & ~crypt_stat->extent_mask)
715                         num_extents++;
716                 lower_size += (num_extents * crypt_stat->extent_size);
717         }
718         return lower_size;
719 }
720 
721 /**
722  * truncate_upper
723  * @dentry: The ecryptfs layer dentry
724  * @ia: Address of the ecryptfs inode's attributes
725  * @lower_ia: Address of the lower inode's attributes
726  *
727  * Function to handle truncations modifying the size of the file. Note
728  * that the file sizes are interpolated. When expanding, we are simply
729  * writing strings of 0's out. When truncating, we truncate the upper
730  * inode and update the lower_ia according to the page index
731  * interpolations. If ATTR_SIZE is set in lower_ia->ia_valid upon return,
732  * the caller must use lower_ia in a call to notify_change() to perform
733  * the truncation of the lower inode.
734  *
735  * Returns zero on success; non-zero otherwise
736  */
737 static int truncate_upper(struct dentry *dentry, struct iattr *ia,
738                           struct iattr *lower_ia)
739 {
740         int rc = 0;
741         struct inode *inode = dentry->d_inode;
742         struct ecryptfs_crypt_stat *crypt_stat;
743         loff_t i_size = i_size_read(inode);
744         loff_t lower_size_before_truncate;
745         loff_t lower_size_after_truncate;
746 
747         if (unlikely((ia->ia_size == i_size))) {
748                 lower_ia->ia_valid &= ~ATTR_SIZE;
749                 return 0;
750         }
751         rc = ecryptfs_get_lower_file(dentry, inode);
752         if (rc)
753                 return rc;
754         crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
755         /* Switch on growing or shrinking file */
756         if (ia->ia_size > i_size) {
757                 char zero[] = { 0x00 };
758 
759                 lower_ia->ia_valid &= ~ATTR_SIZE;
760                 /* Write a single 0 at the last position of the file;
761                  * this triggers code that will fill in 0's throughout
762                  * the intermediate portion of the previous end of the
763                  * file and the new and of the file */
764                 rc = ecryptfs_write(inode, zero,
765                                     (ia->ia_size - 1), 1);
766         } else { /* ia->ia_size < i_size_read(inode) */
767                 /* We're chopping off all the pages down to the page
768                  * in which ia->ia_size is located. Fill in the end of
769                  * that page from (ia->ia_size & ~PAGE_CACHE_MASK) to
770                  * PAGE_CACHE_SIZE with zeros. */
771                 size_t num_zeros = (PAGE_CACHE_SIZE
772                                     - (ia->ia_size & ~PAGE_CACHE_MASK));
773 
774                 if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
775                         truncate_setsize(inode, ia->ia_size);
776                         lower_ia->ia_size = ia->ia_size;
777                         lower_ia->ia_valid |= ATTR_SIZE;
778                         goto out;
779                 }
780                 if (num_zeros) {
781                         char *zeros_virt;
782 
783                         zeros_virt = kzalloc(num_zeros, GFP_KERNEL);
784                         if (!zeros_virt) {
785                                 rc = -ENOMEM;
786                                 goto out;
787                         }
788                         rc = ecryptfs_write(inode, zeros_virt,
789                                             ia->ia_size, num_zeros);
790                         kfree(zeros_virt);
791                         if (rc) {
792                                 printk(KERN_ERR "Error attempting to zero out "
793                                        "the remainder of the end page on "
794                                        "reducing truncate; rc = [%d]\n", rc);
795                                 goto out;
796                         }
797                 }
798                 truncate_setsize(inode, ia->ia_size);
799                 rc = ecryptfs_write_inode_size_to_metadata(inode);
800                 if (rc) {
801                         printk(KERN_ERR "Problem with "
802                                "ecryptfs_write_inode_size_to_metadata; "
803                                "rc = [%d]\n", rc);
804                         goto out;
805                 }
806                 /* We are reducing the size of the ecryptfs file, and need to
807                  * know if we need to reduce the size of the lower file. */
808                 lower_size_before_truncate =
809                     upper_size_to_lower_size(crypt_stat, i_size);
810                 lower_size_after_truncate =
811                     upper_size_to_lower_size(crypt_stat, ia->ia_size);
812                 if (lower_size_after_truncate < lower_size_before_truncate) {
813                         lower_ia->ia_size = lower_size_after_truncate;
814                         lower_ia->ia_valid |= ATTR_SIZE;
815                 } else
816                         lower_ia->ia_valid &= ~ATTR_SIZE;
817         }
818 out:
819         ecryptfs_put_lower_file(inode);
820         return rc;
821 }
822 
823 static int ecryptfs_inode_newsize_ok(struct inode *inode, loff_t offset)
824 {
825         struct ecryptfs_crypt_stat *crypt_stat;
826         loff_t lower_oldsize, lower_newsize;
827 
828         crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
829         lower_oldsize = upper_size_to_lower_size(crypt_stat,
830                                                  i_size_read(inode));
831         lower_newsize = upper_size_to_lower_size(crypt_stat, offset);
832         if (lower_newsize > lower_oldsize) {
833                 /*
834                  * The eCryptfs inode and the new *lower* size are mixed here
835                  * because we may not have the lower i_mutex held and/or it may
836                  * not be appropriate to call inode_newsize_ok() with inodes
837                  * from other filesystems.
838                  */
839                 return inode_newsize_ok(inode, lower_newsize);
840         }
841 
842         return 0;
843 }
844 
845 /**
846  * ecryptfs_truncate
847  * @dentry: The ecryptfs layer dentry
848  * @new_length: The length to expand the file to
849  *
850  * Simple function that handles the truncation of an eCryptfs inode and
851  * its corresponding lower inode.
852  *
853  * Returns zero on success; non-zero otherwise
854  */
855 int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
856 {
857         struct iattr ia = { .ia_valid = ATTR_SIZE, .ia_size = new_length };
858         struct iattr lower_ia = { .ia_valid = 0 };
859         int rc;
860 
861         rc = ecryptfs_inode_newsize_ok(dentry->d_inode, new_length);
862         if (rc)
863                 return rc;
864 
865         rc = truncate_upper(dentry, &ia, &lower_ia);
866         if (!rc && lower_ia.ia_valid & ATTR_SIZE) {
867                 struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
868 
869                 mutex_lock(&lower_dentry->d_inode->i_mutex);
870                 rc = notify_change(lower_dentry, &lower_ia, NULL);
871                 mutex_unlock(&lower_dentry->d_inode->i_mutex);
872         }
873         return rc;
874 }
875 
876 static int
877 ecryptfs_permission(struct inode *inode, int mask)
878 {
879         return inode_permission(ecryptfs_inode_to_lower(inode), mask);
880 }
881 
882 /**
883  * ecryptfs_setattr
884  * @dentry: dentry handle to the inode to modify
885  * @ia: Structure with flags of what to change and values
886  *
887  * Updates the metadata of an inode. If the update is to the size
888  * i.e. truncation, then ecryptfs_truncate will handle the size modification
889  * of both the ecryptfs inode and the lower inode.
890  *
891  * All other metadata changes will be passed right to the lower filesystem,
892  * and we will just update our inode to look like the lower.
893  */
894 static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
895 {
896         int rc = 0;
897         struct dentry *lower_dentry;
898         struct iattr lower_ia;
899         struct inode *inode;
900         struct inode *lower_inode;
901         struct ecryptfs_crypt_stat *crypt_stat;
902 
903         crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
904         if (!(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED))
905                 ecryptfs_init_crypt_stat(crypt_stat);
906         inode = dentry->d_inode;
907         lower_inode = ecryptfs_inode_to_lower(inode);
908         lower_dentry = ecryptfs_dentry_to_lower(dentry);
909         mutex_lock(&crypt_stat->cs_mutex);
910         if (S_ISDIR(dentry->d_inode->i_mode))
911                 crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
912         else if (S_ISREG(dentry->d_inode->i_mode)
913                  && (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)
914                      || !(crypt_stat->flags & ECRYPTFS_KEY_VALID))) {
915                 struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
916 
917                 mount_crypt_stat = &ecryptfs_superblock_to_private(
918                         dentry->d_sb)->mount_crypt_stat;
919                 rc = ecryptfs_get_lower_file(dentry, inode);
920                 if (rc) {
921                         mutex_unlock(&crypt_stat->cs_mutex);
922                         goto out;
923                 }
924                 rc = ecryptfs_read_metadata(dentry);
925                 ecryptfs_put_lower_file(inode);
926                 if (rc) {
927                         if (!(mount_crypt_stat->flags
928                               & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)) {
929                                 rc = -EIO;
930                                 printk(KERN_WARNING "Either the lower file "
931                                        "is not in a valid eCryptfs format, "
932                                        "or the key could not be retrieved. "
933                                        "Plaintext passthrough mode is not "
934                                        "enabled; returning -EIO\n");
935                                 mutex_unlock(&crypt_stat->cs_mutex);
936                                 goto out;
937                         }
938                         rc = 0;
939                         crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED
940                                                | ECRYPTFS_ENCRYPTED);
941                 }
942         }
943         mutex_unlock(&crypt_stat->cs_mutex);
944 
945         rc = inode_change_ok(inode, ia);
946         if (rc)
947                 goto out;
948         if (ia->ia_valid & ATTR_SIZE) {
949                 rc = ecryptfs_inode_newsize_ok(inode, ia->ia_size);
950                 if (rc)
951                         goto out;
952         }
953 
954         memcpy(&lower_ia, ia, sizeof(lower_ia));
955         if (ia->ia_valid & ATTR_FILE)
956                 lower_ia.ia_file = ecryptfs_file_to_lower(ia->ia_file);
957         if (ia->ia_valid & ATTR_SIZE) {
958                 rc = truncate_upper(dentry, ia, &lower_ia);
959                 if (rc < 0)
960                         goto out;
961         }
962 
963         /*
964          * mode change is for clearing setuid/setgid bits. Allow lower fs
965          * to interpret this in its own way.
966          */
967         if (lower_ia.ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
968                 lower_ia.ia_valid &= ~ATTR_MODE;
969 
970         mutex_lock(&lower_dentry->d_inode->i_mutex);
971         rc = notify_change(lower_dentry, &lower_ia, NULL);
972         mutex_unlock(&lower_dentry->d_inode->i_mutex);
973 out:
974         fsstack_copy_attr_all(inode, lower_inode);
975         return rc;
976 }
977 
978 static int ecryptfs_getattr_link(struct vfsmount *mnt, struct dentry *dentry,
979                                  struct kstat *stat)
980 {
981         struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
982         int rc = 0;
983 
984         mount_crypt_stat = &ecryptfs_superblock_to_private(
985                                                 dentry->d_sb)->mount_crypt_stat;
986         generic_fillattr(dentry->d_inode, stat);
987         if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES) {
988                 char *target;
989                 size_t targetsiz;
990 
991                 target = ecryptfs_readlink_lower(dentry, &targetsiz);
992                 if (!IS_ERR(target)) {
993                         kfree(target);
994                         stat->size = targetsiz;
995                 } else {
996                         rc = PTR_ERR(target);
997                 }
998         }
999         return rc;
1000 }
1001 
1002 static int ecryptfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1003                             struct kstat *stat)
1004 {
1005         struct kstat lower_stat;
1006         int rc;
1007 
1008         rc = vfs_getattr(ecryptfs_dentry_to_lower_path(dentry), &lower_stat);
1009         if (!rc) {
1010                 fsstack_copy_attr_all(dentry->d_inode,
1011                                       ecryptfs_inode_to_lower(dentry->d_inode));
1012                 generic_fillattr(dentry->d_inode, stat);
1013                 stat->blocks = lower_stat.blocks;
1014         }
1015         return rc;
1016 }
1017 
1018 int
1019 ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
1020                   size_t size, int flags)
1021 {
1022         int rc = 0;
1023         struct dentry *lower_dentry;
1024 
1025         lower_dentry = ecryptfs_dentry_to_lower(dentry);
1026         if (!lower_dentry->d_inode->i_op->setxattr) {
1027                 rc = -EOPNOTSUPP;
1028                 goto out;
1029         }
1030 
1031         rc = vfs_setxattr(lower_dentry, name, value, size, flags);
1032         if (!rc && dentry->d_inode)
1033                 fsstack_copy_attr_all(dentry->d_inode, lower_dentry->d_inode);
1034 out:
1035         return rc;
1036 }
1037 
1038 ssize_t
1039 ecryptfs_getxattr_lower(struct dentry *lower_dentry, const char *name,
1040                         void *value, size_t size)
1041 {
1042         int rc = 0;
1043 
1044         if (!lower_dentry->d_inode->i_op->getxattr) {
1045                 rc = -EOPNOTSUPP;
1046                 goto out;
1047         }
1048         mutex_lock(&lower_dentry->d_inode->i_mutex);
1049         rc = lower_dentry->d_inode->i_op->getxattr(lower_dentry, name, value,
1050                                                    size);
1051         mutex_unlock(&lower_dentry->d_inode->i_mutex);
1052 out:
1053         return rc;
1054 }
1055 
1056 static ssize_t
1057 ecryptfs_getxattr(struct dentry *dentry, const char *name, void *value,
1058                   size_t size)
1059 {
1060         return ecryptfs_getxattr_lower(ecryptfs_dentry_to_lower(dentry), name,
1061                                        value, size);
1062 }
1063 
1064 static ssize_t
1065 ecryptfs_listxattr(struct dentry *dentry, char *list, size_t size)
1066 {
1067         int rc = 0;
1068         struct dentry *lower_dentry;
1069 
1070         lower_dentry = ecryptfs_dentry_to_lower(dentry);
1071         if (!lower_dentry->d_inode->i_op->listxattr) {
1072                 rc = -EOPNOTSUPP;
1073                 goto out;
1074         }
1075         mutex_lock(&lower_dentry->d_inode->i_mutex);
1076         rc = lower_dentry->d_inode->i_op->listxattr(lower_dentry, list, size);
1077         mutex_unlock(&lower_dentry->d_inode->i_mutex);
1078 out:
1079         return rc;
1080 }
1081 
1082 static int ecryptfs_removexattr(struct dentry *dentry, const char *name)
1083 {
1084         int rc = 0;
1085         struct dentry *lower_dentry;
1086 
1087         lower_dentry = ecryptfs_dentry_to_lower(dentry);
1088         if (!lower_dentry->d_inode->i_op->removexattr) {
1089                 rc = -EOPNOTSUPP;
1090                 goto out;
1091         }
1092         mutex_lock(&lower_dentry->d_inode->i_mutex);
1093         rc = lower_dentry->d_inode->i_op->removexattr(lower_dentry, name);
1094         mutex_unlock(&lower_dentry->d_inode->i_mutex);
1095 out:
1096         return rc;
1097 }
1098 
1099 const struct inode_operations ecryptfs_symlink_iops = {
1100         .readlink = generic_readlink,
1101         .follow_link = ecryptfs_follow_link,
1102         .put_link = kfree_put_link,
1103         .permission = ecryptfs_permission,
1104         .setattr = ecryptfs_setattr,
1105         .getattr = ecryptfs_getattr_link,
1106         .setxattr = ecryptfs_setxattr,
1107         .getxattr = ecryptfs_getxattr,
1108         .listxattr = ecryptfs_listxattr,
1109         .removexattr = ecryptfs_removexattr
1110 };
1111 
1112 const struct inode_operations ecryptfs_dir_iops = {
1113         .create = ecryptfs_create,
1114         .lookup = ecryptfs_lookup,
1115         .link = ecryptfs_link,
1116         .unlink = ecryptfs_unlink,
1117         .symlink = ecryptfs_symlink,
1118         .mkdir = ecryptfs_mkdir,
1119         .rmdir = ecryptfs_rmdir,
1120         .mknod = ecryptfs_mknod,
1121         .rename = ecryptfs_rename,
1122         .permission = ecryptfs_permission,
1123         .setattr = ecryptfs_setattr,
1124         .setxattr = ecryptfs_setxattr,
1125         .getxattr = ecryptfs_getxattr,
1126         .listxattr = ecryptfs_listxattr,
1127         .removexattr = ecryptfs_removexattr
1128 };
1129 
1130 const struct inode_operations ecryptfs_main_iops = {
1131         .permission = ecryptfs_permission,
1132         .setattr = ecryptfs_setattr,
1133         .getattr = ecryptfs_getattr,
1134         .setxattr = ecryptfs_setxattr,
1135         .getxattr = ecryptfs_getxattr,
1136         .listxattr = ecryptfs_listxattr,
1137         .removexattr = ecryptfs_removexattr
1138 };
1139 

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