diff options
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 115 |
1 files changed, 95 insertions, 20 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 096035eb29d0..ca72382ce6cc 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -38,6 +38,8 @@ #include <linux/backing-dev.h> #include <linux/security.h> #include <linux/xattr.h> +#include <linux/fscrypto.h> +#include <linux/random.h> #include "ubifs-media.h" /* Version of this UBIFS implementation */ @@ -83,10 +85,6 @@ */ #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 @@ -138,6 +136,12 @@ */ #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. */ @@ -645,9 +649,6 @@ typedef int (*ubifs_lpt_scan_callback)(struct ubifs_info *c, * @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 @@ -676,8 +677,6 @@ struct ubifs_wbuf { 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; @@ -1007,6 +1006,8 @@ struct ubifs_debug_info; * * @big_lpt: flag that LPT is too big to write whole during commit * @space_fixup: flag indicating that free space in LEBs needs to be cleaned up + * @double_hash: flag indicating that we can do lookups by hash + * @encrypted: flag indicating that this file system contains encrypted files * @no_chk_data_crc: do not check CRCs when reading data nodes (except during * recovery) * @bulk_read: enable bulk-reads @@ -1249,6 +1250,8 @@ struct ubifs_info { unsigned int big_lpt:1; unsigned int space_fixup:1; + unsigned int double_hash:1; + unsigned int encrypted:1; unsigned int no_chk_data_crc:1; unsigned int bulk_read:1; unsigned int default_compr:2; @@ -1515,25 +1518,29 @@ int ubifs_consolidate_log(struct ubifs_info *c); /* 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); @@ -1568,7 +1575,9 @@ int ubifs_save_dirty_idx_lnums(struct ubifs_info *c); 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, @@ -1576,16 +1585,16 @@ 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); @@ -1642,6 +1651,7 @@ int ubifs_read_superblock(struct ubifs_info *c); struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c); int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup); int ubifs_fixup_free_space(struct ubifs_info *c); +int ubifs_enable_encryption(struct ubifs_info *c); /* replay.c */ int ubifs_validate_entry(struct ubifs_info *c, @@ -1733,16 +1743,21 @@ int ubifs_update_time(struct inode *inode, struct timespec *time, int flags); #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); @@ -1781,6 +1796,66 @@ int ubifs_decompress(const struct ubifs_info *c, const void *buf, int len, #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_ioctl_set_policy fscrypt_notsupp_ioctl_set_policy +#define fscrypt_ioctl_get_policy fscrypt_notsupp_ioctl_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, ...); |