diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2016-02-07 19:35:05 -0500 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-05-29 03:52:06 +0200 |
| commit | 1487abde26ae07c507d95f4a59021b2f647e64f1 (patch) | |
| tree | a589facb5e481b13cf9abf2450312d18a69364b1 /include | |
| parent | 72e896d8d5698abc18c4e22995edabc242a7fa62 (diff) | |
ext4 crypto: revalidate dentry after adding or removing the key
Add a validation check for dentries for encrypted directory to make
sure we're not caching stale data after a key has been added or removed.
Also check to make sure that status of the encryption key is updated
when readdir(2) is executed.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Theodore Ts'o <tytso@google.com>
Change-Id: Ic7a90d79d9447272fc512ae2abbd299523de02b8
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dcache.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h index f2c042f1c..15b03546d 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -420,6 +420,23 @@ static inline bool d_is_su(const struct dentry *dentry) !memcmp(dentry->d_name.name, "su", 2); } +/** + * d_inode - Get the actual inode of this dentry + * @dentry: The dentry to query + * + * This is the helper normal filesystems should use to get at their own inodes + * in their own dentries and ignore the layering superimposed upon them. + */ +static inline struct inode *d_inode(const struct dentry *dentry) +{ + return dentry->d_inode; +} + +static inline bool d_is_negative(const struct dentry *dentry) +{ + return (dentry->d_inode == NULL); +} + extern int sysctl_vfs_cache_pressure; #endif /* __LINUX_DCACHE_H */ |