diff options
Diffstat (limited to 'ubifs-utils/libubifs/ubifs.h')
| -rw-r--r-- | ubifs-utils/libubifs/ubifs.h | 832 |
1 files changed, 201 insertions, 631 deletions
diff --git a/ubifs-utils/libubifs/ubifs.h b/ubifs-utils/libubifs/ubifs.h index 4226b21..f32818d 100644 --- a/ubifs-utils/libubifs/ubifs.h +++ b/ubifs-utils/libubifs/ubifs.h @@ -11,38 +11,18 @@ #ifndef __UBIFS_H__ #define __UBIFS_H__ -#include <asm/div64.h> -#include <linux/statfs.h> -#include <linux/fs.h> -#include <linux/err.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> -#include <linux/spinlock.h> -#include <linux/mutex.h> -#include <linux/rwsem.h> -#include <linux/mtd/ubi.h> -#include <linux/pagemap.h> -#include <linux/backing-dev.h> -#include <linux/security.h> -#include <linux/xattr.h> -#include <linux/random.h> -#include <linux/sysfs.h> -#include <linux/completion.h> -#include <crypto/hash_info.h> -#include <crypto/hash.h> -#include <crypto/utils.h> - -#include <linux/fscrypt.h> - +#include <string.h> + +#include "linux_types.h" +#include "list.h" +#include "rbtree.h" +#include "spinlock.h" +#include "mutex.h" +#include "rwsem.h" +#include "atomic.h" +#include "libubi.h" #include "ubifs-media.h" -/* Version of this UBIFS implementation */ -#define UBIFS_VERSION 1 - -/* UBIFS file system VFS magic number */ -#define UBIFS_SUPER_MAGIC 0x24051905 - /* Number of UBIFS blocks per VFS page */ #define UBIFS_BLOCKS_PER_PAGE (PAGE_SIZE / UBIFS_BLOCK_SIZE) #define UBIFS_BLOCKS_PER_PAGE_SHIFT (PAGE_SHIFT - UBIFS_BLOCK_SHIFT) @@ -59,6 +39,9 @@ */ #define MIN_INDEX_LEBS 2 +/* Maximum logical eraseblock size in bytes */ +#define UBIFS_MAX_LEB_SZ (2*1024*1024) + /* Minimum amount of data UBIFS writes to the flash */ #define MIN_WRITE_SZ (UBIFS_DATA_NODE_SZ + 8) @@ -74,12 +57,6 @@ /* Maximum number of entries in each LPT (LEB category) heap */ #define LPT_HEAP_SZ 256 -/* - * Background thread name pattern. The numbers are UBI device and volume - * numbers. - */ -#define BGT_NAME_PATTERN "ubifs_bgt%d_%d" - /* Maximum possible inode number (only 32-bit inodes are supported now) */ #define MAX_INUM 0xFFFFFFFF @@ -115,64 +92,11 @@ /* How much an extended attribute adds to the host inode */ #define CALC_XATTR_BYTES(data_len) ALIGN(UBIFS_INO_NODE_SZ + (data_len) + 1, 8) -/* - * Znodes which were not touched for 'OLD_ZNODE_AGE' seconds are considered - * "old", and znode which were touched last 'YOUNG_ZNODE_AGE' seconds ago are - * considered "young". This is used by shrinker when selecting znode to trim - * off. - */ -#define OLD_ZNODE_AGE 20 -#define YOUNG_ZNODE_AGE 5 - -/* - * Some compressors, like LZO, may end up with more data then the input buffer. - * So UBIFS always allocates larger output buffer, to be sure the compressor - * will not corrupt memory in case of worst case compression. - */ -#define WORST_COMPR_FACTOR 2 - -#ifdef CONFIG_FS_ENCRYPTION -#define UBIFS_CIPHER_BLOCK_SIZE FSCRYPT_CONTENTS_ALIGNMENT -#else -#define UBIFS_CIPHER_BLOCK_SIZE 0 -#endif - -/* - * How much memory is needed for a buffer where we compress a data node. - */ -#define COMPRESSED_DATA_NODE_BUF_SZ \ - (UBIFS_DATA_NODE_SZ + UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR) - /* Maximum expected tree height for use by bottom_up_buf */ #define BOTTOM_UP_HEIGHT 64 -/* Maximum number of data nodes to bulk-read */ -#define UBIFS_MAX_BULK_READ 32 - -#ifdef CONFIG_UBIFS_FS_AUTHENTICATION #define UBIFS_HASH_ARR_SZ UBIFS_MAX_HASH_LEN #define UBIFS_HMAC_ARR_SZ UBIFS_MAX_HMAC_LEN -#else -#define UBIFS_HASH_ARR_SZ 0 -#define UBIFS_HMAC_ARR_SZ 0 -#endif - -/* - * The UBIFS sysfs directory name pattern and maximum name length (3 for "ubi" - * + 1 for "_" and plus 2x2 for 2 UBI numbers and 1 for the trailing zero byte. - */ -#define UBIFS_DFS_DIR_NAME "ubi%d_%d" -#define UBIFS_DFS_DIR_LEN (3 + 1 + 2*2 + 1) - -/* - * Lockdep classes for UBIFS inode @ui_mutex. - */ -enum { - WB_MUTEX_1 = 0, - WB_MUTEX_2 = 1, - WB_MUTEX_3 = 2, - WB_MUTEX_4 = 3, -}; /* * Znode flags (actually, bit numbers which store the flags). @@ -265,18 +189,6 @@ enum { LEB_RETAINED, }; -/* - * Action taken upon a failed ubifs_assert(). - * @ASSACT_REPORT: just report the failed assertion - * @ASSACT_RO: switch to read-only mode - * @ASSACT_PANIC: call BUG() and possible panic the kernel - */ -enum { - ASSACT_REPORT = 0, - ASSACT_RO, - ASSACT_PANIC, -}; - /** * struct ubifs_old_idx - index node obsoleted since last commit start. * @rb: rb-tree node @@ -351,81 +263,25 @@ struct ubifs_gced_idx_leb { /** * struct ubifs_inode - UBIFS in-memory inode description. - * @vfs_inode: VFS inode description object * @creat_sqnum: sequence number at time of creation - * @del_cmtno: commit number corresponding to the time the inode was deleted, - * protected by @c->commit_sem; * @xattr_size: summarized size of all extended attributes in bytes * @xattr_cnt: count of extended attributes this inode has * @xattr_names: sum of lengths of all extended attribute names belonging to * this inode - * @dirty: non-zero if the inode is dirty - * @xattr: non-zero if this is an extended attribute inode - * @bulk_read: non-zero if bulk-read should be used - * @ui_mutex: serializes inode write-back with the rest of VFS operations, - * serializes "clean <-> dirty" state changes, serializes bulk-read, - * protects @dirty, @bulk_read, @ui_size, and @xattr_size - * @xattr_sem: serilizes write operations (remove|set|create) on xattr - * @ui_lock: protects @synced_i_size - * @synced_i_size: synchronized size of inode, i.e. the value of inode size - * currently stored on the flash; used only for regular file - * inodes * @ui_size: inode size used by UBIFS when writing to flash * @flags: inode flags (@UBIFS_COMPR_FL, etc) * @compr_type: default compression type used for this inode - * @last_page_read: page number of last page read (for bulk read) - * @read_in_a_row: number of consecutive pages read in a row (for bulk read) * @data_len: length of the data attached to the inode * @data: inode's data - * - * @ui_mutex exists for two main reasons. At first it prevents inodes from - * being written back while UBIFS changing them, being in the middle of an VFS - * operation. This way UBIFS makes sure the inode fields are consistent. For - * example, in 'ubifs_rename()' we change 4 inodes simultaneously, and - * write-back must not write any of them before we have finished. - * - * The second reason is budgeting - UBIFS has to budget all operations. If an - * operation is going to mark an inode dirty, it has to allocate budget for - * this. It cannot just mark it dirty because there is no guarantee there will - * be enough flash space to write the inode back later. This means UBIFS has - * to have full control over inode "clean <-> dirty" transitions (and pages - * actually). But unfortunately, VFS marks inodes dirty in many places, and it - * does not ask the file-system if it is allowed to do so (there is a notifier, - * but it is not enough), i.e., there is no mechanism to synchronize with this. - * So UBIFS has its own inode dirty flag and its own mutex to serialize - * "clean <-> dirty" transitions. - * - * The @synced_i_size field is used to make sure we never write pages which are - * beyond last synchronized inode size. See 'ubifs_writepage()' for more - * information. - * - * The @ui_size is a "shadow" variable for @inode->i_size and UBIFS uses - * @ui_size instead of @inode->i_size. The reason for this is that UBIFS cannot - * make sure @inode->i_size is always changed under @ui_mutex, because it - * cannot call 'truncate_setsize()' with @ui_mutex locked, because it would - * deadlock with 'ubifs_writepage()' (see file.c). All the other inode fields - * are changed under @ui_mutex, so they do not need "shadow" fields. Note, one - * could consider to rework locking and base it on "shadow" fields. */ struct ubifs_inode { - struct inode vfs_inode; unsigned long long creat_sqnum; - unsigned long long del_cmtno; unsigned int xattr_size; unsigned int xattr_cnt; unsigned int xattr_names; - unsigned int dirty:1; - unsigned int xattr:1; - unsigned int bulk_read:1; unsigned int compr_type:2; - struct mutex ui_mutex; - struct rw_semaphore xattr_sem; - spinlock_t ui_lock; - loff_t synced_i_size; loff_t ui_size; int flags; - pgoff_t last_page_read; - pgoff_t read_in_a_row; int data_len; void *data; }; @@ -673,9 +529,6 @@ 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 - * @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 * @next_ino: points to the next position of the following inode number * @inodes: stores the inode numbers of the nodes which are in wbuf * @@ -701,9 +554,6 @@ struct ubifs_wbuf { int (*sync_callback)(struct ubifs_info *c, int lnum, int free, int pad); struct mutex io_mutex; spinlock_t lock; - struct hrtimer timer; - unsigned int no_timer:1; - unsigned int need_sync:1; int next_ino; ino_t *inodes; }; @@ -801,28 +651,6 @@ struct ubifs_znode { }; /** - * struct bu_info - bulk-read information. - * @key: first data node key - * @zbranch: zbranches of data nodes to bulk read - * @buf: buffer to read into - * @buf_len: buffer length - * @gc_seq: GC sequence number to detect races with GC - * @cnt: number of data nodes for bulk read - * @blk_cnt: number of data blocks including holes - * @oef: end of file reached - */ -struct bu_info { - union ubifs_key key; - struct ubifs_zbranch zbranch[UBIFS_MAX_BULK_READ]; - void *buf; - int buf_len; - int gc_seq; - int cnt; - int blk_cnt; - int eof; -}; - -/** * struct ubifs_node_range - node length range description data structure. * @len: fixed node length * @min_len: minimum possible node length @@ -839,24 +667,6 @@ struct ubifs_node_range { }; /** - * struct ubifs_compressor - UBIFS compressor description structure. - * @compr_type: compressor type (%UBIFS_COMPR_LZO, etc) - * @cc: cryptoapi compressor handle - * @comp_mutex: mutex used during compression - * @decomp_mutex: mutex used during decompression - * @name: compressor name - * @capi_name: cryptoapi compressor name - */ -struct ubifs_compressor { - int compr_type; - struct crypto_comp *cc; - struct mutex *comp_mutex; - struct mutex *decomp_mutex; - const char *name; - const char *capi_name; -}; - -/** * struct ubifs_budget_req - budget requirements of an operation. * * @fast: non-zero if the budgeting should try to acquire budget quickly and @@ -943,26 +753,6 @@ struct ubifs_orphan { }; /** - * struct ubifs_mount_opts - UBIFS-specific mount options information. - * @unmount_mode: selected unmount mode (%0 default, %1 normal, %2 fast) - * @bulk_read: enable/disable bulk-reads (%0 default, %1 disable, %2 enable) - * @chk_data_crc: enable/disable CRC data checking when reading data nodes - * (%0 default, %1 disable, %2 enable) - * @override_compr: override default compressor (%0 - do not override and use - * superblock compressor, %1 - override and use compressor - * specified in @compr_type) - * @compr_type: compressor type to override the superblock compressor with - * (%UBIFS_COMPR_NONE, etc) - */ -struct ubifs_mount_opts { - unsigned int unmount_mode:2; - unsigned int bulk_read:2; - unsigned int chk_data_crc:2; - unsigned int override_compr:1; - unsigned int compr_type:2; -}; - -/** * struct ubifs_budg_info - UBIFS budgeting information. * @idx_growth: amount of bytes budgeted for index growth * @data_growth: amount of bytes budgeted for cached data @@ -996,24 +786,12 @@ struct ubifs_budg_info { int dent_budget; }; -/** - * ubifs_stats_info - per-FS statistics information. - * @magic_errors: number of bad magic numbers (will be reset with a new mount). - * @node_errors: number of bad nodes (will be reset with a new mount). - * @crc_errors: number of bad crcs (will be reset with a new mount). - */ -struct ubifs_stats_info { - unsigned int magic_errors; - unsigned int node_errors; - unsigned int crc_errors; -}; - struct ubifs_debug_info; /** * struct ubifs_info - UBIFS file-system description data structure * (per-superblock). - * @vfs_sb: VFS @struct super_block object + * * @sup_node: The super block node as read from the device * * @highest_inum: highest used inode number @@ -1023,7 +801,14 @@ struct ubifs_debug_info; * @cnt_lock: protects @highest_inum and @max_sqnum counters * @fmt_version: UBIFS on-flash format version * @ro_compat_version: R/O compatibility version - * @uuid: UUID from super block + * + * @debug_level: level of debug messages, 0 - none, 1 - error message, + * 2 - warning message, 3 - notice message, 4 - debug message + * @program_type: used to identify the type of current program + * @program_name: program name + * @dev_name: device name + * @dev_fd: opening handler for an UBI volume or an image file + * @libubi: opening handler for libubi * * @lhead_lnum: log head logical eraseblock number * @lhead_offs: log head offset @@ -1048,7 +833,6 @@ struct ubifs_debug_info; * @commit_sem: synchronizes committer with other processes * @cmt_state: commit state * @cs_lock: commit state lock - * @cmt_wq: wait queue to sleep on if the log is full and a commit is running * * @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 @@ -1056,11 +840,8 @@ struct ubifs_debug_info; * @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 - * @default_compr: default compression algorithm (%UBIFS_COMPR_LZO, etc) - * @rw_incompat: the media is not R/W compatible - * @assert_action: action to take when a ubifs_assert() fails * @authenticated: flag indigating the FS is mounted in authenticated mode + * @superblock_need_write: flag indicating that we need to write superblock node * * @tnc_mutex: protects the Tree Node Cache (TNC), @zroot, @cnext, @enext, and * @calc_idx_sz @@ -1082,15 +863,6 @@ struct ubifs_debug_info; * @mst_node: master node * @mst_offs: offset of valid master node * - * @max_bu_buf_len: maximum bulk-read buffer length - * @bu_mutex: protects the pre-allocated bulk-read buffer and @c->bu - * @bu: pre-allocated bulk-read information - * - * @write_reserve_mutex: protects @write_reserve_buf - * @write_reserve_buf: on the write path we allocate memory, which might - * sometimes be unavailable, in which case we use this - * write reserve buffer - * * @log_lebs: number of logical eraseblocks in the log * @log_bytes: log size in bytes * @log_last: last LEB of the log @@ -1103,12 +875,14 @@ struct ubifs_debug_info; * @main_lebs: count of LEBs in the main area * @main_first: first LEB of the main area * @main_bytes: main area size in bytes + * @default_compr: default compression type + * @favor_lzo: favor LZO compression method + * @favor_percent: lzo vs. zlib threshold used in case favor LZO * * @key_hash_type: type of the key hash * @key_hash: direntry key hash function * @key_fmt: key format * @key_len: key length - * @hash_len: The length of the index node hashes * @fanout: fanout of the index tree (number of links per indexing node) * * @min_io_size: minimal input/output unit size @@ -1117,8 +891,6 @@ struct ubifs_debug_info; * time (MTD write buffer size) * @max_write_shift: number of bits in @max_write_size minus one * @leb_size: logical eraseblock size in bytes - * @leb_start: starting offset of logical eraseblocks within physical - * eraseblocks * @half_leb_size: half LEB size * @idx_leb_size: how many bytes of an LEB are effectively available when it is * used to store indexing nodes (@leb_size - @max_idx_node_sz) @@ -1150,10 +922,8 @@ struct ubifs_debug_info; * data nodes of maximum size - used in free space reporting * @dead_wm: LEB dead space watermark * @dark_wm: LEB dark space watermark - * @block_cnt: count of 4KiB blocks on the FS * * @ranges: UBIFS node length ranges - * @ubi: UBI volume descriptor * @di: UBI device information * @vi: UBI volume information * @@ -1172,11 +942,6 @@ struct ubifs_debug_info; * @ohead_offs: orphan head offset * @no_orphs: non-zero if there are no orphans * - * @bgt: UBIFS background thread - * @bgt_name: background thread name - * @need_bgt: if background thread should run - * @need_wbuf_sync: if write-buffers have to be synchronized - * * @gc_lnum: LEB number used for garbage collection * @sbuf: a buffer of LEB size used by GC and replay for scanning * @idx_gc: list of index LEBs that have been garbage collected @@ -1184,10 +949,6 @@ struct ubifs_debug_info; * @gc_seq: incremented for every non-index LEB garbage collected * @gced_lnum: last non-index LEB that was garbage collected * - * @infos_list: links all 'ubifs_info' objects - * @umount_mutex: serializes shrinker and un-mount - * @shrinker_run_no: shrinker run number - * * @space_bits: number of bits needed to record free or dirty space * @lpt_lnum_bits: number of bits needed to record a LEB number in the LPT * @lpt_offs_bits: number of bits needed to record an offset in the LPT @@ -1230,6 +991,7 @@ struct ubifs_debug_info; * * @ltab_lnum: LEB number of LPT's own lprops table * @ltab_offs: offset of LPT's own lprops table + * @lpt: lprops table * @ltab: LPT's own lprops table * @ltab_cmt: LPT's own lprops table (commit copy) * @lsave_cnt: number of LEB numbers in LPT's save table @@ -1238,25 +1000,22 @@ struct ubifs_debug_info; * @lsave: LPT's save table * @lscan_lnum: LEB number of last LPT scan * - * @rp_size: size of the reserved pool in bytes - * @report_rp_size: size of the reserved pool reported to user-space - * @rp_uid: reserved pool user ID - * @rp_gid: reserved pool group ID + * @rp_size: reserved pool size * - * @hash_tfm: the hash transformation used for hashing nodes - * @hmac_tfm: the HMAC transformation for this filesystem - * @hmac_desc_len: length of the HMAC used for authentication - * @auth_key_name: the authentication key name - * @auth_hash_name: the name of the hash algorithm used for authentication - * @auth_hash_algo: the authentication hash used for this fs + * @hash_algo_name: the name of the hashing algorithm to use + * @hash_algo: The hash algo number (from include/linux/hash_info.h) + * @auth_key_filename: authentication key file name + * @x509_filename: x509 certificate file name for authentication + * @hash_len: the length of the hash + * @root_idx_hash: The hash of the root index node + * @lpt_hash: The hash of the LPT + * @mst_hash: The hash of the master node * @log_hash: the log hash from the commit start node up to the latest reference * node. * - * @empty: %1 if the UBI device is empty * @need_recovery: %1 if the file-system needs recovery * @replaying: %1 during journal replay * @mounting: %1 while mounting - * @probing: %1 while attempting to mount if SB_SILENT mount flag is set * @remounting_rw: %1 while re-mounting from R/O mode to R/W mode * @replay_list: temporary list used during journal replay * @replay_buds: list of buds to replay @@ -1266,16 +1025,11 @@ struct ubifs_debug_info; * @rcvrd_mst_node: recovered master node to write when re-mounting R/O mounted * FS to R/W mode * @size_tree: inode size information for recovery - * @mount_opts: UBIFS-specific mount options - * - * @dbg: debugging-related information - * @stats: statistics exported over sysfs * - * @kobj: kobject for /sys/fs/ubifs/ - * @kobj_unregister: completion to unregister sysfs kobject + * @new_ihead_lnum: used by debugging to check @c->ihead_lnum + * @new_ihead_offs: used by debugging to check @c->ihead_offs */ struct ubifs_info { - struct super_block *vfs_sb; struct ubifs_sb_node *sup_node; ino_t highest_inum; @@ -1284,7 +1038,13 @@ struct ubifs_info { spinlock_t cnt_lock; int fmt_version; int ro_compat_version; - unsigned char uuid[16]; + + int debug_level; + int program_type; + const char *program_name; + char *dev_name; + int dev_fd; + libubi_t libubi; int lhead_lnum; int lhead_offs; @@ -1306,20 +1066,12 @@ struct ubifs_info { struct rw_semaphore commit_sem; int cmt_state; spinlock_t cs_lock; - wait_queue_head_t cmt_wq; - - struct kobject kobj; - struct completion kobj_unregister; 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; - unsigned int rw_incompat:1; - unsigned int assert_action:2; unsigned int authenticated:1; unsigned int superblock_need_write:1; @@ -1342,13 +1094,6 @@ struct ubifs_info { struct ubifs_mst_node *mst_node; int mst_offs; - int max_bu_buf_len; - struct mutex bu_mutex; - struct bu_info bu; - - struct mutex write_reserve_mutex; - void *write_reserve_buf; - int log_lebs; long long log_bytes; int log_last; @@ -1361,12 +1106,14 @@ struct ubifs_info { int main_lebs; int main_first; long long main_bytes; + int default_compr; + int favor_lzo; + int favor_percent; uint8_t key_hash_type; uint32_t (*key_hash)(const char *str, int len); int key_fmt; int key_len; - int hash_len; int fanout; int min_io_size; @@ -1374,7 +1121,6 @@ struct ubifs_info { int max_write_size; int max_write_shift; int leb_size; - int leb_start; int half_leb_size; int idx_leb_size; int leb_cnt; @@ -1402,12 +1148,10 @@ struct ubifs_info { int leb_overhead; int dead_wm; int dark_wm; - int block_cnt; struct ubifs_node_range ranges[UBIFS_NODE_TYPES_CNT]; - struct ubi_volume_desc *ubi; - struct ubi_device_info di; - struct ubi_volume_info vi; + struct ubi_dev_info di; + struct ubi_vol_info vi; struct rb_root orph_tree; struct list_head orph_list; @@ -1424,11 +1168,6 @@ struct ubifs_info { int ohead_offs; int no_orphs; - struct task_struct *bgt; - char bgt_name[sizeof(BGT_NAME_PATTERN) + 9]; - int need_bgt; - int need_wbuf_sync; - int gc_lnum; void *sbuf; struct list_head idx_gc; @@ -1436,10 +1175,6 @@ struct ubifs_info { int gc_seq; int gced_lnum; - struct list_head infos_list; - struct mutex umount_mutex; - unsigned int shrinker_run_no; - int space_bits; int lpt_lnum_bits; int lpt_offs_bits; @@ -1480,6 +1215,7 @@ struct ubifs_info { int ltab_lnum; int ltab_offs; + struct ubifs_lprops *lpt; struct ubifs_lpt_lprops *ltab; struct ubifs_lpt_lprops *ltab_cmt; int lsave_cnt; @@ -1489,97 +1225,99 @@ struct ubifs_info { int lscan_lnum; long long rp_size; - long long report_rp_size; - kuid_t rp_uid; - kgid_t rp_gid; - struct crypto_shash *hash_tfm; - struct crypto_shash *hmac_tfm; - int hmac_desc_len; - char *auth_key_name; - char *auth_hash_name; - enum hash_algo auth_hash_algo; + char *hash_algo_name; + int hash_algo; + char *auth_key_filename; + char *auth_cert_filename; + int hash_len; + uint8_t root_idx_hash[UBIFS_MAX_HASH_LEN]; + uint8_t lpt_hash[UBIFS_MAX_HASH_LEN]; + uint8_t mst_hash[UBIFS_MAX_HASH_LEN]; struct shash_desc *log_hash; - /* The below fields are used only during mounting and re-mounting */ - unsigned int empty:1; unsigned int need_recovery:1; unsigned int replaying:1; unsigned int mounting:1; unsigned int remounting_rw:1; - unsigned int probing:1; struct list_head replay_list; struct list_head replay_buds; unsigned long long cs_sqnum; struct list_head unclean_leb_list; struct ubifs_mst_node *rcvrd_mst_node; struct rb_root size_tree; - struct ubifs_mount_opts mount_opts; - struct ubifs_debug_info *dbg; - struct ubifs_stats_info *stats; + int new_ihead_lnum; + int new_ihead_offs; }; -extern struct list_head ubifs_infos; -extern spinlock_t ubifs_infos_lock; extern atomic_long_t ubifs_clean_zn_cnt; -extern const struct super_operations ubifs_super_operations; -extern const struct address_space_operations ubifs_file_address_operations; -extern const struct file_operations ubifs_file_operations; -extern const struct inode_operations ubifs_file_inode_operations; -extern const struct file_operations ubifs_dir_operations; -extern const struct inode_operations ubifs_dir_inode_operations; -extern const struct inode_operations ubifs_symlink_inode_operations; -extern struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT]; -extern int ubifs_default_version; /* auth.c */ static inline int ubifs_authenticated(const struct ubifs_info *c) { - return (IS_ENABLED(CONFIG_UBIFS_FS_AUTHENTICATION)) && c->authenticated; + return c->authenticated; } -struct shash_desc *__ubifs_hash_get_desc(const struct ubifs_info *c); -static inline struct shash_desc *ubifs_hash_get_desc(const struct ubifs_info *c) -{ - return ubifs_authenticated(c) ? __ubifs_hash_get_desc(c) : NULL; -} - -static inline int ubifs_shash_init(const struct ubifs_info *c, - struct shash_desc *desc) -{ - if (ubifs_authenticated(c)) - return crypto_shash_init(desc); - else - return 0; -} +#ifdef WITH_CRYPTO +int ubifs_init_authentication(struct ubifs_info *c); +int ubifs_shash_init(const struct ubifs_info *c, struct shash_desc *desc); +int ubifs_shash_update(const struct ubifs_info *c, struct shash_desc *desc, + const void *buf, unsigned int len); +int ubifs_shash_final(const struct ubifs_info *c, struct shash_desc *desc, + u8 *out); +struct shash_desc *ubifs_hash_get_desc(const struct ubifs_info *c); +int __ubifs_node_calc_hash(const struct ubifs_info *c, const void *buf, + u8 *hash); +int ubifs_master_node_calc_hash(const struct ubifs_info *c, const void *node, + uint8_t *hash); +int ubifs_sign_superblock_node(struct ubifs_info *c, void *node); +void ubifs_bad_hash(const struct ubifs_info *c, const void *node, + const u8 *hash, int lnum, int offs); +void __ubifs_exit_authentication(struct ubifs_info *c); +#else +static inline int ubifs_init_authentication(__unused struct ubifs_info *c) +{ return 0; } +static inline int ubifs_shash_init(__unused const struct ubifs_info *c, + __unused struct shash_desc *desc) +{ return 0; } +static inline int ubifs_shash_update(__unused const struct ubifs_info *c, + __unused struct shash_desc *desc, + __unused const void *buf, + __unused unsigned int len) { return 0; } +static inline int ubifs_shash_final(__unused const struct ubifs_info *c, + __unused struct shash_desc *desc, + __unused u8 *out) { return 0; } +static inline struct shash_desc * +ubifs_hash_get_desc(__unused const struct ubifs_info *c) { return NULL; } +static inline int __ubifs_node_calc_hash(__unused const struct ubifs_info *c, + __unused const void *buf, + __unused u8 *hash) { return 0; } +static inline int +ubifs_master_node_calc_hash(__unused const struct ubifs_info *c, + __unused const void *node, __unused uint8_t *hash) +{ return 0; } +static inline int ubifs_sign_superblock_node(__unused struct ubifs_info *c, + __unused void *node) +{ return 0; } +static inline void ubifs_bad_hash(__unused const struct ubifs_info *c, + __unused const void *node, + __unused const u8 *hash, __unused int lnum, + __unused int offs) {} +static inline void __ubifs_exit_authentication(__unused struct ubifs_info *c) {} +#endif -static inline int ubifs_shash_update(const struct ubifs_info *c, - struct shash_desc *desc, const void *buf, - unsigned int len) +static inline int ubifs_prepare_auth_node(__unused struct ubifs_info *c, + __unused void *node, + __unused struct shash_desc *inhash) { - int err = 0; - - if (ubifs_authenticated(c)) { - err = crypto_shash_update(desc, buf, len); - if (err < 0) - return err; - } - + // To be implemented return 0; } -static inline int ubifs_shash_final(const struct ubifs_info *c, - struct shash_desc *desc, u8 *out) -{ - return ubifs_authenticated(c) ? crypto_shash_final(desc, out) : 0; -} - -int __ubifs_node_calc_hash(const struct ubifs_info *c, const void *buf, - u8 *hash); -static inline int ubifs_node_calc_hash(const struct ubifs_info *c, - const void *buf, u8 *hash) +static inline int +ubifs_node_calc_hash(const struct ubifs_info *c, const void *buf, u8 *hash) { if (ubifs_authenticated(c)) return __ubifs_node_calc_hash(c, buf, hash); @@ -1587,8 +1325,13 @@ static inline int ubifs_node_calc_hash(const struct ubifs_info *c, return 0; } -int ubifs_prepare_auth_node(struct ubifs_info *c, void *node, - struct shash_desc *inhash); +static inline int +ubifs_node_check_hash(__unused const struct ubifs_info *c, + __unused const void *buf, __unused const u8 *expected) +{ + // To be implemented + return 0; +} /** * ubifs_check_hash - compare two hashes @@ -1599,10 +1342,12 @@ int ubifs_prepare_auth_node(struct ubifs_info *c, void *node, * Compare two hashes @expected and @got. Returns 0 when they are equal, a * negative error code otherwise. */ -static inline int ubifs_check_hash(const struct ubifs_info *c, - const u8 *expected, const u8 *got) +static inline int +ubifs_check_hash(__unused const struct ubifs_info *c, + __unused const u8 *expected, __unused const u8 *got) { - return crypto_memneq(expected, got, c->hash_len); + // To be implemented + return 0; } /** @@ -1614,37 +1359,12 @@ static inline int ubifs_check_hash(const struct ubifs_info *c, * Compare two hashes @expected and @got. Returns 0 when they are equal, a * negative error code otherwise. */ -static inline int ubifs_check_hmac(const struct ubifs_info *c, - const u8 *expected, const u8 *got) -{ - return crypto_memneq(expected, got, c->hmac_desc_len); -} - -#ifdef CONFIG_UBIFS_FS_AUTHENTICATION -void ubifs_bad_hash(const struct ubifs_info *c, const void *node, - const u8 *hash, int lnum, int offs); -#else -static inline void ubifs_bad_hash(const struct ubifs_info *c, const void *node, - const u8 *hash, int lnum, int offs) {}; -#endif - -int __ubifs_node_check_hash(const struct ubifs_info *c, const void *buf, - const u8 *expected); -static inline int ubifs_node_check_hash(const struct ubifs_info *c, - const void *buf, const u8 *expected) +static inline int +ubifs_check_hmac(__unused const struct ubifs_info *c, + __unused const u8 *expected, __unused const u8 *got) { - if (ubifs_authenticated(c)) - return __ubifs_node_check_hash(c, buf, expected); - else - return 0; -} - -int ubifs_init_authentication(struct ubifs_info *c); -void __ubifs_exit_authentication(struct ubifs_info *c); -static inline void ubifs_exit_authentication(struct ubifs_info *c) -{ - if (ubifs_authenticated(c)) - __ubifs_exit_authentication(c); + // To be implemented + return 0; } /** @@ -1655,8 +1375,8 @@ static inline void ubifs_exit_authentication(struct ubifs_info *c) * This returns a pointer to the hash of a branch. Since the key already is a * dynamically sized object we cannot use a struct member here. */ -static inline u8 *ubifs_branch_hash(struct ubifs_info *c, - struct ubifs_branch *br) +static inline u8 * +ubifs_branch_hash(struct ubifs_info *c, struct ubifs_branch *br) { return (void *)br + sizeof(*br) + c->key_len; } @@ -1669,33 +1389,28 @@ static inline u8 *ubifs_branch_hash(struct ubifs_info *c, * * With authentication this copies a hash, otherwise does nothing. */ -static inline void ubifs_copy_hash(const struct ubifs_info *c, const u8 *from, - u8 *to) +static inline void +ubifs_copy_hash(const struct ubifs_info *c, const u8 *from, u8 *to) { if (ubifs_authenticated(c)) memcpy(to, from, c->hash_len); } -int __ubifs_node_insert_hmac(const struct ubifs_info *c, void *buf, - int len, int ofs_hmac); -static inline int ubifs_node_insert_hmac(const struct ubifs_info *c, void *buf, - int len, int ofs_hmac) +static inline int +ubifs_node_insert_hmac(__unused const struct ubifs_info *c, __unused void *buf, + __unused int len, __unused int ofs_hmac) { - if (ubifs_authenticated(c)) - return __ubifs_node_insert_hmac(c, buf, len, ofs_hmac); - else - return 0; + // To be implemented + return 0; } -int __ubifs_node_verify_hmac(const struct ubifs_info *c, const void *buf, - int len, int ofs_hmac); -static inline int ubifs_node_verify_hmac(const struct ubifs_info *c, - const void *buf, int len, int ofs_hmac) +static inline int +ubifs_node_verify_hmac(__unused const struct ubifs_info *c, + __unused const void *buf, __unused int len, + __unused int ofs_hmac) { - if (ubifs_authenticated(c)) - return __ubifs_node_verify_hmac(c, buf, len, ofs_hmac); - else - return 0; + // To be implemented + return 0; } /** @@ -1706,29 +1421,33 @@ static inline int ubifs_node_verify_hmac(const struct ubifs_info *c, * be 0 for unauthenticated filesystems or the real size of an auth node * authentication is enabled. */ -static inline int ubifs_auth_node_sz(const struct ubifs_info *c) +static inline int +ubifs_auth_node_sz(__unused const struct ubifs_info *c) { - if (ubifs_authenticated(c)) - return sizeof(struct ubifs_auth_node) + c->hmac_desc_len; - else - return 0; + // To be implemented + return 0; } -int ubifs_sb_verify_signature(struct ubifs_info *c, - const struct ubifs_sb_node *sup); -bool ubifs_hmac_zero(struct ubifs_info *c, const u8 *hmac); -int ubifs_hmac_wkm(struct ubifs_info *c, u8 *hmac); +static inline bool +ubifs_hmac_zero(__unused struct ubifs_info *c, __unused const u8 *hmac) +{ + // To be implemented + return true; +} -int __ubifs_shash_copy_state(const struct ubifs_info *c, struct shash_desc *src, - struct shash_desc *target); -static inline int ubifs_shash_copy_state(const struct ubifs_info *c, - struct shash_desc *src, - struct shash_desc *target) +static inline int +ubifs_shash_copy_state(__unused const struct ubifs_info *c, + __unused struct shash_desc *src, + __unused struct shash_desc *target) +{ + // To be implemented + return 0; +} + +static inline void ubifs_exit_authentication(struct ubifs_info *c) { if (ubifs_authenticated(c)) - return __ubifs_shash_copy_state(c, src, target); - else - return 0; + __ubifs_exit_authentication(c); } /* io.c */ @@ -1763,9 +1482,6 @@ void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last); int ubifs_io_init(struct ubifs_info *c); void ubifs_pad(const struct ubifs_info *c, void *buf, int pad); int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf); -int ubifs_bg_wbufs_sync(struct ubifs_info *c); -void ubifs_wbuf_add_ino_nolock(struct ubifs_wbuf *wbuf, ino_t inum); -int ubifs_sync_wbufs_by_inode(struct ubifs_info *c, struct inode *inode); /* scan.c */ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum, @@ -1793,49 +1509,11 @@ int ubifs_log_end_commit(struct ubifs_info *c, int new_ltail_lnum); int ubifs_log_post_commit(struct ubifs_info *c, int old_ltail_lnum); int ubifs_consolidate_log(struct ubifs_info *c); -/* journal.c */ -int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir, - 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 inode *fst_inode, - const struct fscrypt_name *fst_nm, - const struct inode *snd_dir, - 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 inode *old_inode, - const struct fscrypt_name *old_nm, - const struct inode *new_dir, - 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 fscrypt_name *nm); -int ubifs_jnl_change_xattr(struct ubifs_info *c, const struct inode *inode1, - const struct inode *inode2); - /* budget.c */ int ubifs_budget_space(struct ubifs_info *c, struct ubifs_budget_req *req); void ubifs_release_budget(struct ubifs_info *c, struct ubifs_budget_req *req); -void ubifs_release_dirty_inode_budget(struct ubifs_info *c, - struct ubifs_inode *ui); -int ubifs_budget_inode_op(struct ubifs_info *c, struct inode *inode, - struct ubifs_budget_req *req); -void ubifs_release_ino_dirty(struct ubifs_info *c, struct inode *inode, - struct ubifs_budget_req *req); -void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode, - struct ubifs_budget_req *req); -long long ubifs_get_free_space(struct ubifs_info *c); long long ubifs_get_free_space_nolock(struct ubifs_info *c); int ubifs_calc_min_idx_lebs(struct ubifs_info *c); -void ubifs_convert_page_budget(struct ubifs_info *c); long long ubifs_reported_space(const struct ubifs_info *c, long long free); long long ubifs_calc_available(const struct ubifs_info *c, int min_idx_lebs); @@ -1853,8 +1531,6 @@ 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 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, @@ -1867,8 +1543,6 @@ int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key, 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 fscrypt_name *nm); -int ubifs_tnc_remove_dh(struct ubifs_info *c, const union ubifs_key *key, - uint32_t cookie); 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); @@ -1885,13 +1559,8 @@ void destroy_old_idx(struct ubifs_info *c); int is_idx_node_in_tnc(struct ubifs_info *c, union ubifs_key *key, int level, int lnum, int offs); int insert_old_idx_znode(struct ubifs_info *c, struct ubifs_znode *znode); -int ubifs_tnc_get_bu_keys(struct ubifs_info *c, struct bu_info *bu); -int ubifs_tnc_bulk_read(struct ubifs_info *c, struct bu_info *bu); /* tnc_misc.c */ -struct ubifs_znode *ubifs_tnc_levelorder_next(const struct ubifs_info *c, - struct ubifs_znode *zr, - struct ubifs_znode *znode); int ubifs_search_zbranch(const struct ubifs_info *c, const struct ubifs_znode *znode, const union ubifs_key *key, int *n); @@ -1911,14 +1580,7 @@ int ubifs_tnc_read_node(struct ubifs_info *c, struct ubifs_zbranch *zbr, int ubifs_tnc_start_commit(struct ubifs_info *c, struct ubifs_zbranch *zroot); int ubifs_tnc_end_commit(struct ubifs_info *c); -/* shrinker.c */ -unsigned long ubifs_shrink_scan(struct shrinker *shrink, - struct shrink_control *sc); -unsigned long ubifs_shrink_count(struct shrinker *shrink, - struct shrink_control *sc); - /* commit.c */ -int ubifs_bg_thread(void *info); void ubifs_commit_required(struct ubifs_info *c); void ubifs_request_bg_commit(struct ubifs_info *c); int ubifs_run_commit(struct ubifs_info *c); @@ -1935,7 +1597,6 @@ int ubifs_write_master(struct ubifs_info *c); int ubifs_read_superblock(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, @@ -1951,19 +1612,16 @@ int ubifs_get_idx_gc_leb(struct ubifs_info *c); int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp); /* orphan.c */ -int ubifs_add_orphan(struct ubifs_info *c, ino_t inum); -void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum); int ubifs_orphan_start_commit(struct ubifs_info *c); int ubifs_orphan_end_commit(struct ubifs_info *c); int ubifs_mount_orphans(struct ubifs_info *c, int unclean, int read_only); int ubifs_clear_orphans(struct ubifs_info *c); /* lpt.c */ +int ubifs_calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs, int *big_lpt); int ubifs_calc_lpt_geom(struct ubifs_info *c); int ubifs_create_lpt(struct ubifs_info *c, struct ubifs_lprops *lps, int lp_cnt, u8 *hash); -int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first, - int *lpt_lebs, int *big_lpt, u8 *hash); int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr); struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum); struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum); @@ -2023,142 +1681,54 @@ const struct ubifs_lprops *ubifs_fast_find_freeable(struct ubifs_info *c); const struct ubifs_lprops *ubifs_fast_find_frdi_idx(struct ubifs_info *c); int ubifs_calc_dark(const struct ubifs_info *c, int spc); -/* file.c */ -int ubifs_fsync(struct file *file, loff_t start, loff_t end, int datasync); -int ubifs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, - struct iattr *attr); -int ubifs_update_time(struct inode *inode, int flags); - -/* dir.c */ -struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir, - umode_t mode, bool is_xattr); -int ubifs_getattr(struct mnt_idmap *idmap, const struct path *path, - struct kstat *stat, u32 request_mask, unsigned int flags); -int ubifs_check_dir_empty(struct inode *dir); - -/* xattr.c */ -int ubifs_xattr_set(struct inode *host, const char *name, const void *value, - size_t size, int flags, bool check_lock); -ssize_t ubifs_xattr_get(struct inode *host, const char *name, void *buf, - size_t size); - -#ifdef CONFIG_UBIFS_FS_XATTR -extern const struct xattr_handler * const ubifs_xattr_handlers[]; -ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size); -void ubifs_evict_xattr_inode(struct ubifs_info *c, ino_t xattr_inum); -int ubifs_purge_xattrs(struct inode *host); -#else -#define ubifs_listxattr NULL -#define ubifs_xattr_handlers NULL -static inline void ubifs_evict_xattr_inode(struct ubifs_info *c, - ino_t xattr_inum) { } -static inline int ubifs_purge_xattrs(struct inode *host) -{ - return 0; -} -#endif - -#ifdef CONFIG_UBIFS_FS_SECURITY -extern int ubifs_init_security(struct inode *dentry, struct inode *inode, - const struct qstr *qstr); -#else -static inline int ubifs_init_security(struct inode *dentry, - struct inode *inode, const struct qstr *qstr) -{ - return 0; -} -#endif - - /* super.c */ -struct inode *ubifs_iget(struct super_block *sb, unsigned long inum); +int open_ubi(struct ubifs_info *c, const char *node); +void close_ubi(struct ubifs_info *c); +int open_target(struct ubifs_info *c); +int close_target(struct ubifs_info *c); +int check_volume_empty(struct ubifs_info *c); +void init_ubifs_info(struct ubifs_info *c, int program_type); +int init_constants_early(struct ubifs_info *c); +int init_constants_sb(struct ubifs_info *c); +void init_constants_master(struct ubifs_info *c); +int take_gc_lnum(struct ubifs_info *c); +int alloc_wbufs(struct ubifs_info *c); +void free_wbufs(struct ubifs_info *c); +void free_orphans(struct ubifs_info *c); +void destroy_journal(struct ubifs_info *c); /* recovery.c */ int ubifs_recover_master_node(struct ubifs_info *c); -int ubifs_write_rcvrd_mst_node(struct ubifs_info *c); struct ubifs_scan_leb *ubifs_recover_leb(struct ubifs_info *c, int lnum, int offs, void *sbuf, int jhead); struct ubifs_scan_leb *ubifs_recover_log_leb(struct ubifs_info *c, int lnum, int offs, void *sbuf); int ubifs_recover_inl_heads(struct ubifs_info *c, void *sbuf); -int ubifs_clean_lebs(struct ubifs_info *c, void *sbuf); int ubifs_rcvry_gc_commit(struct ubifs_info *c); int ubifs_recover_size_accum(struct ubifs_info *c, union ubifs_key *key, int deletion, loff_t new_size); int ubifs_recover_size(struct ubifs_info *c, bool in_place); void ubifs_destroy_size_tree(struct ubifs_info *c); -/* ioctl.c */ -int ubifs_fileattr_get(struct dentry *dentry, struct fileattr *fa); -int ubifs_fileattr_set(struct mnt_idmap *idmap, - struct dentry *dentry, struct fileattr *fa); -long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); -void ubifs_set_inode_flags(struct inode *inode); -#ifdef CONFIG_COMPAT -long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); -#endif - -/* compressor.c */ -int __init ubifs_compressors_init(void); -void ubifs_compressors_exit(void); -void ubifs_compress(const struct ubifs_info *c, const void *in_buf, int in_len, - void *out_buf, int *out_len, int *compr_type); -int ubifs_decompress(const struct ubifs_info *c, const void *buf, int len, - void *out, int *out_len, int compr_type); - -/* sysfs.c */ -int ubifs_sysfs_init(void); -void ubifs_sysfs_exit(void); -int ubifs_sysfs_register(struct ubifs_info *c); -void ubifs_sysfs_unregister(struct ubifs_info *c); - -#include "debug.h" -#include "misc.h" -#include "key.h" - -#ifndef CONFIG_FS_ENCRYPTION -static inline int ubifs_encrypt(const struct inode *inode, - struct ubifs_data_node *dn, - unsigned int in_len, unsigned int *out_len, - int block) -{ - struct ubifs_info *c = inode->i_sb->s_fs_info; - ubifs_assert(c, 0); - return -EOPNOTSUPP; -} -static inline int ubifs_decrypt(const struct inode *inode, - struct ubifs_data_node *dn, - unsigned int *out_len, int block) -{ - struct ubifs_info *c = inode->i_sb->s_fs_info; - ubifs_assert(c, 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 const struct fscrypt_operations ubifs_crypt_operations; - /* Normal UBIFS messages */ -__printf(2, 3) -void ubifs_msg(const struct ubifs_info *c, const char *fmt, ...); -__printf(2, 3) -void ubifs_err(const struct ubifs_info *c, const char *fmt, ...); -__printf(2, 3) -void ubifs_warn(const struct ubifs_info *c, const char *fmt, ...); -/* - * A conditional variant of 'ubifs_err()' which doesn't output anything - * if probing (ie. SB_SILENT set). - */ -#define ubifs_errc(c, fmt, ...) \ -do { \ - if (!(c)->probing) \ - ubifs_err(c, fmt, ##__VA_ARGS__); \ +enum { ERR_LEVEL = 1, WARN_LEVEL, INFO_LEVEL, DEBUG_LEVEL }; +#define ubifs_msg(c, fmt, ...) do { \ + if (c->debug_level >= INFO_LEVEL) \ + printf("<INFO> %s[%d] (%s): %s: " fmt "\n", \ + c->program_name, getpid(), \ + c->dev_name, __FUNCTION__, ##__VA_ARGS__); \ +} while (0) +#define ubifs_warn(c, fmt, ...) do { \ + if (c->debug_level >= WARN_LEVEL) \ + printf("<WARN> %s[%d] (%s): %s: " fmt "\n", \ + c->program_name, getpid(), \ + c->dev_name, __FUNCTION__, ##__VA_ARGS__); \ +} while (0) +#define ubifs_err(c, fmt, ...) do { \ + if (c->debug_level >= ERR_LEVEL) \ + printf("<ERROR> %s[%d] (%s): %s: " fmt "\n", \ + c->program_name, getpid(), \ + c->dev_name, __FUNCTION__, ##__VA_ARGS__); \ } while (0) #endif /* !__UBIFS_H__ */ |