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Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h62
1 files changed, 47 insertions, 15 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ef755e5f6f2f..1cb67859e051 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2303,23 +2303,47 @@ extern unsigned ext4_free_clusters_after_init(struct super_block *sb,
ext4_fsblk_t ext4_inode_to_goal_block(struct inode *);
#ifdef CONFIG_FS_ENCRYPTION
+static inline void ext4_fname_from_fscrypt_name(struct ext4_filename *dst,
+ const struct fscrypt_name *src)
+{
+ memset(dst, 0, sizeof(*dst));
+
+ dst->usr_fname = src->usr_fname;
+ dst->disk_name = src->disk_name;
+ dst->hinfo.hash = src->hash;
+ dst->hinfo.minor_hash = src->minor_hash;
+ dst->crypto_buf = src->crypto_buf;
+}
+
static inline int ext4_fname_setup_filename(struct inode *dir,
- const struct qstr *iname,
- int lookup, struct ext4_filename *fname)
+ const struct qstr *iname,
+ int lookup,
+ struct ext4_filename *fname)
{
struct fscrypt_name name;
int err;
- memset(fname, 0, sizeof(struct ext4_filename));
-
err = fscrypt_setup_filename(dir, iname, lookup, &name);
+ if (err)
+ return err;
- fname->usr_fname = name.usr_fname;
- fname->disk_name = name.disk_name;
- fname->hinfo.hash = name.hash;
- fname->hinfo.minor_hash = name.minor_hash;
- fname->crypto_buf = name.crypto_buf;
- return err;
+ ext4_fname_from_fscrypt_name(fname, &name);
+ return 0;
+}
+
+static inline int ext4_fname_prepare_lookup(struct inode *dir,
+ struct dentry *dentry,
+ struct ext4_filename *fname)
+{
+ struct fscrypt_name name;
+ int err;
+
+ err = fscrypt_prepare_lookup(dir, dentry, &name);
+ if (err)
+ return err;
+
+ ext4_fname_from_fscrypt_name(fname, &name);
+ return 0;
}
static inline void ext4_fname_free_filename(struct ext4_filename *fname)
@@ -2333,19 +2357,27 @@ static inline void ext4_fname_free_filename(struct ext4_filename *fname)
fname->usr_fname = NULL;
fname->disk_name.name = NULL;
}
-#else
+#else /* !CONFIG_FS_ENCRYPTION */
static inline int ext4_fname_setup_filename(struct inode *dir,
- const struct qstr *iname,
- int lookup, struct ext4_filename *fname)
+ const struct qstr *iname,
+ int lookup,
+ struct ext4_filename *fname)
{
fname->usr_fname = iname;
fname->disk_name.name = (unsigned char *) iname->name;
fname->disk_name.len = iname->len;
return 0;
}
-static inline void ext4_fname_free_filename(struct ext4_filename *fname) { }
-#endif
+static inline int ext4_fname_prepare_lookup(struct inode *dir,
+ struct dentry *dentry,
+ struct ext4_filename *fname)
+{
+ return ext4_fname_setup_filename(dir, &dentry->d_name, 1, fname);
+}
+
+static inline void ext4_fname_free_filename(struct ext4_filename *fname) { }
+#endif /* !CONFIG_FS_ENCRYPTION */
/* dir.c */
extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *,