#include <linux/backing-dev.h>
#include <linux/security.h>
#include <linux/xattr.h>
+#include <linux/fscrypto.h>
#include "ubifs-media.h"
/* Version of this UBIFS implementation */
*/
#define BGT_NAME_PATTERN "ubifs_bgt%d_%d"
-/* Write-buffer synchronization timeout interval in seconds */
-#define WBUF_TIMEOUT_SOFTLIMIT 3
-#define WBUF_TIMEOUT_HARDLIMIT 5
-
/* Maximum possible inode number (only 32-bit inodes are supported now) */
#define MAX_INUM 0xFFFFFFFF
*/
#define WORST_COMPR_FACTOR 2
+#ifdef CONFIG_UBIFS_FS_ENCRYPTION
+#define UBIFS_CIPHER_BLOCK_SIZE FS_CRYPTO_BLOCK_SIZE
+#else
+#define UBIFS_CIPHER_BLOCK_SIZE 0
+#endif
+
/*
* How much memory is needed for a buffer where we compress a data node.
*/
* @io_mutex: serializes write-buffer I/O
* @lock: serializes @buf, @lnum, @offs, @avail, @used, @next_ino and @inodes
* fields
- * @softlimit: soft write-buffer timeout interval
- * @delta: hard and soft timeouts delta (the timer expire interval is @softlimit
- * and @softlimit + @delta)
* @timer: write-buffer timer
* @no_timer: non-zero if this write-buffer does not have a timer
* @need_sync: non-zero if the timer expired and the wbuf needs sync'ing
int (*sync_callback)(struct ubifs_info *c, int lnum, int free, int pad);
struct mutex io_mutex;
spinlock_t lock;
- ktime_t softlimit;
- unsigned long long delta;
struct hrtimer timer;
unsigned int no_timer:1;
unsigned int need_sync:1;
/* journal.c */
int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
- const struct qstr *nm, const struct inode *inode,
+ const struct fscrypt_name *nm, const struct inode *inode,
int deletion, int xent);
int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode,
const union ubifs_key *key, const void *buf, int len);
int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode);
int ubifs_jnl_delete_inode(struct ubifs_info *c, const struct inode *inode);
int ubifs_jnl_xrename(struct ubifs_info *c, const struct inode *fst_dir,
- const struct dentry *fst_dentry,
+ const struct inode *fst_inode,
+ const struct fscrypt_name *fst_nm,
const struct inode *snd_dir,
- const struct dentry *snd_dentry, int sync);
+ const struct inode *snd_inode,
+ const struct fscrypt_name *snd_nm, int sync);
int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
- const struct dentry *old_dentry,
+ const struct inode *old_inode,
+ const struct fscrypt_name *old_nm,
const struct inode *new_dir,
- const struct dentry *new_dentry,
+ const struct inode *new_inode,
+ const struct fscrypt_name *new_nm,
const struct inode *whiteout, int sync);
int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode,
loff_t old_size, loff_t new_size);
int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
- const struct inode *inode, const struct qstr *nm);
+ const struct inode *inode, const struct fscrypt_name *nm);
int ubifs_jnl_change_xattr(struct ubifs_info *c, const struct inode *inode1,
const struct inode *inode2);
int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key,
struct ubifs_znode **zn, int *n);
int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
- void *node, const struct qstr *nm);
+ void *node, const struct fscrypt_name *nm);
+int ubifs_tnc_lookup_dh(struct ubifs_info *c, const union ubifs_key *key,
+ void *node, uint32_t secondary_hash);
int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
void *node, int *lnum, int *offs);
int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum,
int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key,
int old_lnum, int old_offs, int lnum, int offs, int len);
int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
- int lnum, int offs, int len, const struct qstr *nm);
+ int lnum, int offs, int len, const struct fscrypt_name *nm);
int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key);
int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key,
- const struct qstr *nm);
+ const struct fscrypt_name *nm);
int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key,
union ubifs_key *to_key);
int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum);
struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
union ubifs_key *key,
- const struct qstr *nm);
+ const struct fscrypt_name *nm);
void ubifs_tnc_close(struct ubifs_info *c);
int ubifs_tnc_has_node(struct ubifs_info *c, union ubifs_key *key, int level,
int lnum, int offs, int is_idx);
#endif
/* dir.c */
-struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir,
+struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
umode_t mode);
int ubifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat);
+int ubifs_check_dir_empty(struct inode *dir);
/* xattr.c */
extern const struct xattr_handler *ubifs_xattr_handlers[];
ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size);
int ubifs_init_security(struct inode *dentry, struct inode *inode,
const struct qstr *qstr);
+int ubifs_xattr_set(struct inode *host, const char *name, const void *value,
+ size_t size, int flags);
+ssize_t ubifs_xattr_get(struct inode *host, const char *name, void *buf,
+ size_t size);
/* super.c */
struct inode *ubifs_iget(struct super_block *sb, unsigned long inum);
#include "misc.h"
#include "key.h"
+#ifndef CONFIG_UBIFS_FS_ENCRYPTION
+#define fscrypt_set_d_op(i)
+#define fscrypt_get_ctx fscrypt_notsupp_get_ctx
+#define fscrypt_release_ctx fscrypt_notsupp_release_ctx
+#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
+#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
+#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
+#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
+#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
+#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
+#define fscrypt_process_policy fscrypt_notsupp_process_policy
+#define fscrypt_get_policy fscrypt_notsupp_get_policy
+#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
+#define fscrypt_inherit_context fscrypt_notsupp_inherit_context
+#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
+#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
+#define fscrypt_setup_filename fscrypt_notsupp_setup_filename
+#define fscrypt_free_filename fscrypt_notsupp_free_filename
+#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
+#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
+#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
+#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
+#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk
+static inline int ubifs_encrypt(const struct inode *inode,
+ struct ubifs_data_node *dn,
+ unsigned int in_len, unsigned int *out_len,
+ int block)
+{
+ ubifs_assert(0);
+ return -EOPNOTSUPP;
+}
+static inline int ubifs_decrypt(const struct inode *inode,
+ struct ubifs_data_node *dn,
+ unsigned int *out_len, int block)
+{
+ ubifs_assert(0);
+ return -EOPNOTSUPP;
+}
+#else
+/* crypto.c */
+int ubifs_encrypt(const struct inode *inode, struct ubifs_data_node *dn,
+ unsigned int in_len, unsigned int *out_len, int block);
+int ubifs_decrypt(const struct inode *inode, struct ubifs_data_node *dn,
+ unsigned int *out_len, int block);
+#endif
+
+extern struct fscrypt_operations ubifs_crypt_operations;
+
+static inline bool __ubifs_crypt_is_encrypted(struct inode *inode)
+{
+ struct ubifs_inode *ui = ubifs_inode(inode);
+
+ return ui->flags & UBIFS_CRYPT_FL;
+}
+
+static inline bool ubifs_crypt_is_encrypted(const struct inode *inode)
+{
+ return __ubifs_crypt_is_encrypted((struct inode *)inode);
+}
+
/* Normal UBIFS messages */
__printf(2, 3)
void ubifs_msg(const struct ubifs_info *c, const char *fmt, ...);
projects / linux-2.6-block.git / blobdiff