183d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0+ */ 29eefe2a2SStefan Roese /* 39eefe2a2SStefan Roese * This file is part of UBIFS. 49eefe2a2SStefan Roese * 59eefe2a2SStefan Roese * Copyright (C) 2006-2008 Nokia Corporation 69eefe2a2SStefan Roese * 79eefe2a2SStefan Roese * (C) Copyright 2008-2009 89eefe2a2SStefan Roese * Stefan Roese, DENX Software Engineering, sr@denx.de. 99eefe2a2SStefan Roese * 109eefe2a2SStefan Roese * Authors: Artem Bityutskiy (Битюцкий Артём) 119eefe2a2SStefan Roese * Adrian Hunter 129eefe2a2SStefan Roese */ 139eefe2a2SStefan Roese 149eefe2a2SStefan Roese #ifndef __UBIFS_H__ 159eefe2a2SStefan Roese #define __UBIFS_H__ 169eefe2a2SStefan Roese 17ff94bc40SHeiko Schocher #ifndef __UBOOT__ 18ff94bc40SHeiko Schocher #include <asm/div64.h> 19ff94bc40SHeiko Schocher #include <linux/statfs.h> 20ff94bc40SHeiko Schocher #include <linux/fs.h> 21ff94bc40SHeiko Schocher #include <linux/err.h> 22ff94bc40SHeiko Schocher #include <linux/sched.h> 23ff94bc40SHeiko Schocher #include <linux/slab.h> 24ff94bc40SHeiko Schocher #include <linux/vmalloc.h> 25ff94bc40SHeiko Schocher #include <linux/spinlock.h> 26ff94bc40SHeiko Schocher #include <linux/mutex.h> 27ff94bc40SHeiko Schocher #include <linux/rwsem.h> 28ff94bc40SHeiko Schocher #include <linux/mtd/ubi.h> 29ff94bc40SHeiko Schocher #include <linux/pagemap.h> 30ff94bc40SHeiko Schocher #include <linux/backing-dev.h> 310195a7bbSHeiko Schocher #include <linux/security.h> 32ff94bc40SHeiko Schocher #include "ubifs-media.h" 33ff94bc40SHeiko Schocher #else 34dc288431SAnton Habegger #include <asm/atomic.h> 35dc288431SAnton Habegger #include <asm-generic/atomic-long.h> 369eefe2a2SStefan Roese #include <ubi_uboot.h> 37ad15749bSHans de Goede #include <ubifs_uboot.h> 38ff94bc40SHeiko Schocher 399eefe2a2SStefan Roese #include <linux/ctype.h> 409eefe2a2SStefan Roese #include <linux/time.h> 419eefe2a2SStefan Roese #include <linux/math64.h> 429eefe2a2SStefan Roese #include "ubifs-media.h" 439eefe2a2SStefan Roese 449eefe2a2SStefan Roese struct dentry; 459eefe2a2SStefan Roese struct file; 469eefe2a2SStefan Roese struct iattr; 479eefe2a2SStefan Roese struct kstat; 489eefe2a2SStefan Roese struct vfsmount; 499eefe2a2SStefan Roese 509eefe2a2SStefan Roese extern struct super_block *ubifs_sb; 519eefe2a2SStefan Roese 529eefe2a2SStefan Roese extern unsigned int ubifs_msg_flags; 539eefe2a2SStefan Roese extern unsigned int ubifs_chk_flags; 549eefe2a2SStefan Roese extern unsigned int ubifs_tst_flags; 559eefe2a2SStefan Roese 569eefe2a2SStefan Roese #define pgoff_t unsigned long 579eefe2a2SStefan Roese 589eefe2a2SStefan Roese /* 599eefe2a2SStefan Roese * We "simulate" the Linux page struct much simpler here 609eefe2a2SStefan Roese */ 619eefe2a2SStefan Roese struct page { 629eefe2a2SStefan Roese pgoff_t index; 639eefe2a2SStefan Roese void *addr; 649eefe2a2SStefan Roese struct inode *inode; 659eefe2a2SStefan Roese }; 669eefe2a2SStefan Roese 679eefe2a2SStefan Roese void iput(struct inode *inode); 689eefe2a2SStefan Roese 699eefe2a2SStefan Roese /* linux/include/time.h */ 70ff94bc40SHeiko Schocher #define NSEC_PER_SEC 1000000000L 71ff94bc40SHeiko Schocher #define get_seconds() 0 72ff94bc40SHeiko Schocher #define CURRENT_TIME_SEC ((struct timespec) { get_seconds(), 0 }) 739eefe2a2SStefan Roese 749eefe2a2SStefan Roese struct timespec { 759eefe2a2SStefan Roese time_t tv_sec; /* seconds */ 769eefe2a2SStefan Roese long tv_nsec; /* nanoseconds */ 779eefe2a2SStefan Roese }; 789eefe2a2SStefan Roese 79ff94bc40SHeiko Schocher static struct timespec current_fs_time(struct super_block *sb) 80ff94bc40SHeiko Schocher { 81ff94bc40SHeiko Schocher struct timespec now; 82ff94bc40SHeiko Schocher now.tv_sec = 0; 83ff94bc40SHeiko Schocher now.tv_nsec = 0; 84ff94bc40SHeiko Schocher return now; 85ff94bc40SHeiko Schocher }; 86ff94bc40SHeiko Schocher 879eefe2a2SStefan Roese /* linux/include/dcache.h */ 889eefe2a2SStefan Roese 899eefe2a2SStefan Roese /* 909eefe2a2SStefan Roese * "quick string" -- eases parameter passing, but more importantly 919eefe2a2SStefan Roese * saves "metadata" about the string (ie length and the hash). 929eefe2a2SStefan Roese * 939eefe2a2SStefan Roese * hash comes first so it snuggles against d_parent in the 949eefe2a2SStefan Roese * dentry. 959eefe2a2SStefan Roese */ 969eefe2a2SStefan Roese struct qstr { 979eefe2a2SStefan Roese unsigned int hash; 989eefe2a2SStefan Roese unsigned int len; 99ff94bc40SHeiko Schocher #ifndef __UBOOT__ 1009eefe2a2SStefan Roese const char *name; 101ff94bc40SHeiko Schocher #else 102ff94bc40SHeiko Schocher char *name; 103ff94bc40SHeiko Schocher #endif 1049eefe2a2SStefan Roese }; 1059eefe2a2SStefan Roese 106ff94bc40SHeiko Schocher /* include/linux/fs.h */ 107ff94bc40SHeiko Schocher 108ff94bc40SHeiko Schocher /* Possible states of 'frozen' field */ 109ff94bc40SHeiko Schocher enum { 110ff94bc40SHeiko Schocher SB_UNFROZEN = 0, /* FS is unfrozen */ 111ff94bc40SHeiko Schocher SB_FREEZE_WRITE = 1, /* Writes, dir ops, ioctls frozen */ 112ff94bc40SHeiko Schocher SB_FREEZE_PAGEFAULT = 2, /* Page faults stopped as well */ 113ff94bc40SHeiko Schocher SB_FREEZE_FS = 3, /* For internal FS use (e.g. to stop 114ff94bc40SHeiko Schocher * internal threads if needed) */ 115ff94bc40SHeiko Schocher SB_FREEZE_COMPLETE = 4, /* ->freeze_fs finished successfully */ 116ff94bc40SHeiko Schocher }; 117ff94bc40SHeiko Schocher 118ff94bc40SHeiko Schocher #define SB_FREEZE_LEVELS (SB_FREEZE_COMPLETE - 1) 119ff94bc40SHeiko Schocher 120ff94bc40SHeiko Schocher struct sb_writers { 121ff94bc40SHeiko Schocher #ifndef __UBOOT__ 122ff94bc40SHeiko Schocher /* Counters for counting writers at each level */ 123ff94bc40SHeiko Schocher struct percpu_counter counter[SB_FREEZE_LEVELS]; 124ff94bc40SHeiko Schocher #endif 125ff94bc40SHeiko Schocher wait_queue_head_t wait; /* queue for waiting for 126ff94bc40SHeiko Schocher writers / faults to finish */ 127ff94bc40SHeiko Schocher int frozen; /* Is sb frozen? */ 128ff94bc40SHeiko Schocher wait_queue_head_t wait_unfrozen; /* queue for waiting for 129ff94bc40SHeiko Schocher sb to be thawed */ 130ff94bc40SHeiko Schocher #ifdef CONFIG_DEBUG_LOCK_ALLOC 131ff94bc40SHeiko Schocher struct lockdep_map lock_map[SB_FREEZE_LEVELS]; 132ff94bc40SHeiko Schocher #endif 133ff94bc40SHeiko Schocher }; 134ff94bc40SHeiko Schocher 135ff94bc40SHeiko Schocher struct address_space { 136ff94bc40SHeiko Schocher struct inode *host; /* owner: inode, block_device */ 137ff94bc40SHeiko Schocher #ifndef __UBOOT__ 138ff94bc40SHeiko Schocher struct radix_tree_root page_tree; /* radix tree of all pages */ 139ff94bc40SHeiko Schocher #endif 140ff94bc40SHeiko Schocher spinlock_t tree_lock; /* and lock protecting it */ 141ff94bc40SHeiko Schocher unsigned int i_mmap_writable;/* count VM_SHARED mappings */ 142ff94bc40SHeiko Schocher struct rb_root i_mmap; /* tree of private and shared mappings */ 143ff94bc40SHeiko Schocher struct list_head i_mmap_nonlinear;/*list VM_NONLINEAR mappings */ 144ff94bc40SHeiko Schocher struct mutex i_mmap_mutex; /* protect tree, count, list */ 145ff94bc40SHeiko Schocher /* Protected by tree_lock together with the radix tree */ 146ff94bc40SHeiko Schocher unsigned long nrpages; /* number of total pages */ 147ff94bc40SHeiko Schocher pgoff_t writeback_index;/* writeback starts here */ 148ff94bc40SHeiko Schocher const struct address_space_operations *a_ops; /* methods */ 149ff94bc40SHeiko Schocher unsigned long flags; /* error bits/gfp mask */ 150ff94bc40SHeiko Schocher #ifndef __UBOOT__ 151ff94bc40SHeiko Schocher struct backing_dev_info *backing_dev_info; /* device readahead, etc */ 152ff94bc40SHeiko Schocher #endif 153ff94bc40SHeiko Schocher spinlock_t private_lock; /* for use by the address_space */ 154ff94bc40SHeiko Schocher struct list_head private_list; /* ditto */ 155ff94bc40SHeiko Schocher void *private_data; /* ditto */ 156ff94bc40SHeiko Schocher } __attribute__((aligned(sizeof(long)))); 157ff94bc40SHeiko Schocher 158ff94bc40SHeiko Schocher /* 159ff94bc40SHeiko Schocher * Keep mostly read-only and often accessed (especially for 160ff94bc40SHeiko Schocher * the RCU path lookup and 'stat' data) fields at the beginning 161ff94bc40SHeiko Schocher * of the 'struct inode' 162ff94bc40SHeiko Schocher */ 1639eefe2a2SStefan Roese struct inode { 1649eefe2a2SStefan Roese umode_t i_mode; 165ff94bc40SHeiko Schocher unsigned short i_opflags; 166ff94bc40SHeiko Schocher kuid_t i_uid; 167ff94bc40SHeiko Schocher kgid_t i_gid; 1689eefe2a2SStefan Roese unsigned int i_flags; 1699eefe2a2SStefan Roese 170ff94bc40SHeiko Schocher #ifdef CONFIG_FS_POSIX_ACL 171ff94bc40SHeiko Schocher struct posix_acl *i_acl; 172ff94bc40SHeiko Schocher struct posix_acl *i_default_acl; 173ff94bc40SHeiko Schocher #endif 174ff94bc40SHeiko Schocher 175ff94bc40SHeiko Schocher const struct inode_operations *i_op; 176ff94bc40SHeiko Schocher struct super_block *i_sb; 177ff94bc40SHeiko Schocher struct address_space *i_mapping; 178ff94bc40SHeiko Schocher 1799eefe2a2SStefan Roese #ifdef CONFIG_SECURITY 1809eefe2a2SStefan Roese void *i_security; 1819eefe2a2SStefan Roese #endif 182ff94bc40SHeiko Schocher 183ff94bc40SHeiko Schocher /* Stat data, not accessed from path walking */ 184ff94bc40SHeiko Schocher unsigned long i_ino; 185ff94bc40SHeiko Schocher /* 186ff94bc40SHeiko Schocher * Filesystems may only read i_nlink directly. They shall use the 187ff94bc40SHeiko Schocher * following functions for modification: 188ff94bc40SHeiko Schocher * 189ff94bc40SHeiko Schocher * (set|clear|inc|drop)_nlink 190ff94bc40SHeiko Schocher * inode_(inc|dec)_link_count 191ff94bc40SHeiko Schocher */ 192ff94bc40SHeiko Schocher union { 193ff94bc40SHeiko Schocher const unsigned int i_nlink; 194ff94bc40SHeiko Schocher unsigned int __i_nlink; 195ff94bc40SHeiko Schocher }; 196ff94bc40SHeiko Schocher dev_t i_rdev; 197ff94bc40SHeiko Schocher loff_t i_size; 198ff94bc40SHeiko Schocher struct timespec i_atime; 199ff94bc40SHeiko Schocher struct timespec i_mtime; 200ff94bc40SHeiko Schocher struct timespec i_ctime; 201ff94bc40SHeiko Schocher spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ 202ff94bc40SHeiko Schocher unsigned short i_bytes; 203ff94bc40SHeiko Schocher unsigned int i_blkbits; 204ff94bc40SHeiko Schocher blkcnt_t i_blocks; 205ff94bc40SHeiko Schocher 206ff94bc40SHeiko Schocher #ifdef __NEED_I_SIZE_ORDERED 207ff94bc40SHeiko Schocher seqcount_t i_size_seqcount; 208ff94bc40SHeiko Schocher #endif 209ff94bc40SHeiko Schocher 210ff94bc40SHeiko Schocher /* Misc */ 211ff94bc40SHeiko Schocher unsigned long i_state; 212ff94bc40SHeiko Schocher struct mutex i_mutex; 213ff94bc40SHeiko Schocher 214ff94bc40SHeiko Schocher unsigned long dirtied_when; /* jiffies of first dirtying */ 215ff94bc40SHeiko Schocher 216ff94bc40SHeiko Schocher struct hlist_node i_hash; 217ff94bc40SHeiko Schocher struct list_head i_wb_list; /* backing dev IO list */ 218ff94bc40SHeiko Schocher struct list_head i_lru; /* inode LRU list */ 219ff94bc40SHeiko Schocher struct list_head i_sb_list; 220ff94bc40SHeiko Schocher union { 221ff94bc40SHeiko Schocher struct hlist_head i_dentry; 222ff94bc40SHeiko Schocher struct rcu_head i_rcu; 223ff94bc40SHeiko Schocher }; 224ff94bc40SHeiko Schocher u64 i_version; 225ff94bc40SHeiko Schocher atomic_t i_count; 226ff94bc40SHeiko Schocher atomic_t i_dio_count; 227ff94bc40SHeiko Schocher atomic_t i_writecount; 228ff94bc40SHeiko Schocher const struct file_operations *i_fop; /* former ->i_op->default_file_ops */ 229ff94bc40SHeiko Schocher struct file_lock *i_flock; 230ff94bc40SHeiko Schocher struct address_space i_data; 231ff94bc40SHeiko Schocher #ifdef CONFIG_QUOTA 232ff94bc40SHeiko Schocher struct dquot *i_dquot[MAXQUOTAS]; 233ff94bc40SHeiko Schocher #endif 234ff94bc40SHeiko Schocher struct list_head i_devices; 235ff94bc40SHeiko Schocher union { 236ff94bc40SHeiko Schocher struct pipe_inode_info *i_pipe; 237ff94bc40SHeiko Schocher struct block_device *i_bdev; 238ff94bc40SHeiko Schocher struct cdev *i_cdev; 239ff94bc40SHeiko Schocher }; 240ff94bc40SHeiko Schocher 241ff94bc40SHeiko Schocher __u32 i_generation; 242ff94bc40SHeiko Schocher 243ff94bc40SHeiko Schocher #ifdef CONFIG_FSNOTIFY 244ff94bc40SHeiko Schocher __u32 i_fsnotify_mask; /* all events this inode cares about */ 245ff94bc40SHeiko Schocher struct hlist_head i_fsnotify_marks; 246ff94bc40SHeiko Schocher #endif 247ff94bc40SHeiko Schocher 248ff94bc40SHeiko Schocher #ifdef CONFIG_IMA 249ff94bc40SHeiko Schocher atomic_t i_readcount; /* struct files open RO */ 250ff94bc40SHeiko Schocher #endif 2519eefe2a2SStefan Roese void *i_private; /* fs or device private pointer */ 2529eefe2a2SStefan Roese }; 2539eefe2a2SStefan Roese 254ff94bc40SHeiko Schocher struct super_operations { 255ff94bc40SHeiko Schocher struct inode *(*alloc_inode)(struct super_block *sb); 256ff94bc40SHeiko Schocher void (*destroy_inode)(struct inode *); 257ff94bc40SHeiko Schocher 258ff94bc40SHeiko Schocher void (*dirty_inode) (struct inode *, int flags); 259ff94bc40SHeiko Schocher int (*write_inode) (struct inode *, struct writeback_control *wbc); 260ff94bc40SHeiko Schocher int (*drop_inode) (struct inode *); 261ff94bc40SHeiko Schocher void (*evict_inode) (struct inode *); 262ff94bc40SHeiko Schocher void (*put_super) (struct super_block *); 263ff94bc40SHeiko Schocher int (*sync_fs)(struct super_block *sb, int wait); 264ff94bc40SHeiko Schocher int (*freeze_fs) (struct super_block *); 265ff94bc40SHeiko Schocher int (*unfreeze_fs) (struct super_block *); 266ff94bc40SHeiko Schocher #ifndef __UBOOT__ 267ff94bc40SHeiko Schocher int (*statfs) (struct dentry *, struct kstatfs *); 268ff94bc40SHeiko Schocher #endif 269ff94bc40SHeiko Schocher int (*remount_fs) (struct super_block *, int *, char *); 270ff94bc40SHeiko Schocher void (*umount_begin) (struct super_block *); 271ff94bc40SHeiko Schocher 272ff94bc40SHeiko Schocher #ifndef __UBOOT__ 273ff94bc40SHeiko Schocher int (*show_options)(struct seq_file *, struct dentry *); 274ff94bc40SHeiko Schocher int (*show_devname)(struct seq_file *, struct dentry *); 275ff94bc40SHeiko Schocher int (*show_path)(struct seq_file *, struct dentry *); 276ff94bc40SHeiko Schocher int (*show_stats)(struct seq_file *, struct dentry *); 277ff94bc40SHeiko Schocher #endif 278ff94bc40SHeiko Schocher #ifdef CONFIG_QUOTA 279ff94bc40SHeiko Schocher ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); 280ff94bc40SHeiko Schocher ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); 281ff94bc40SHeiko Schocher #endif 282ff94bc40SHeiko Schocher int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t); 283ff94bc40SHeiko Schocher long (*nr_cached_objects)(struct super_block *, int); 284ff94bc40SHeiko Schocher long (*free_cached_objects)(struct super_block *, long, int); 285ff94bc40SHeiko Schocher }; 286ff94bc40SHeiko Schocher 2879eefe2a2SStefan Roese struct super_block { 2889eefe2a2SStefan Roese struct list_head s_list; /* Keep this first */ 2899eefe2a2SStefan Roese dev_t s_dev; /* search index; _not_ kdev_t */ 2909eefe2a2SStefan Roese unsigned char s_blocksize_bits; 291ff94bc40SHeiko Schocher unsigned long s_blocksize; 292ff94bc40SHeiko Schocher loff_t s_maxbytes; /* Max file size */ 2939eefe2a2SStefan Roese struct file_system_type *s_type; 2949eefe2a2SStefan Roese const struct super_operations *s_op; 295ff94bc40SHeiko Schocher const struct dquot_operations *dq_op; 296ff94bc40SHeiko Schocher const struct quotactl_ops *s_qcop; 2979eefe2a2SStefan Roese const struct export_operations *s_export_op; 2989eefe2a2SStefan Roese unsigned long s_flags; 2999eefe2a2SStefan Roese unsigned long s_magic; 3009eefe2a2SStefan Roese struct dentry *s_root; 3019eefe2a2SStefan Roese struct rw_semaphore s_umount; 3029eefe2a2SStefan Roese int s_count; 303ff94bc40SHeiko Schocher atomic_t s_active; 3049eefe2a2SStefan Roese #ifdef CONFIG_SECURITY 3059eefe2a2SStefan Roese void *s_security; 3069eefe2a2SStefan Roese #endif 307ff94bc40SHeiko Schocher const struct xattr_handler **s_xattr; 3089eefe2a2SStefan Roese 3099eefe2a2SStefan Roese struct list_head s_inodes; /* all inodes */ 310ff94bc40SHeiko Schocher #ifndef __UBOOT__ 311ff94bc40SHeiko Schocher struct hlist_bl_head s_anon; /* anonymous dentries for (nfs) exporting */ 312ff94bc40SHeiko Schocher #endif 313ff94bc40SHeiko Schocher struct list_head s_mounts; /* list of mounts; _not_ for fs use */ 3149eefe2a2SStefan Roese struct block_device *s_bdev; 315ff94bc40SHeiko Schocher #ifndef __UBOOT__ 316ff94bc40SHeiko Schocher struct backing_dev_info *s_bdi; 317ff94bc40SHeiko Schocher #endif 3189eefe2a2SStefan Roese struct mtd_info *s_mtd; 319ff94bc40SHeiko Schocher #ifndef __UBOOT__ 320*5a08cfeeSChristophe Kerello struct hlist_node s_instances; 321ff94bc40SHeiko Schocher struct quota_info s_dquot; /* Diskquota specific options */ 322ff94bc40SHeiko Schocher #endif 3239eefe2a2SStefan Roese 324ff94bc40SHeiko Schocher struct sb_writers s_writers; 3259eefe2a2SStefan Roese 3269eefe2a2SStefan Roese char s_id[32]; /* Informational name */ 327ff94bc40SHeiko Schocher u8 s_uuid[16]; /* UUID */ 3289eefe2a2SStefan Roese 3299eefe2a2SStefan Roese void *s_fs_info; /* Filesystem private info */ 330ff94bc40SHeiko Schocher unsigned int s_max_links; 331ff94bc40SHeiko Schocher #ifndef __UBOOT__ 332ff94bc40SHeiko Schocher fmode_t s_mode; 333ff94bc40SHeiko Schocher #endif 334ff94bc40SHeiko Schocher 335ff94bc40SHeiko Schocher /* Granularity of c/m/atime in ns. 336ff94bc40SHeiko Schocher Cannot be worse than a second */ 337ff94bc40SHeiko Schocher u32 s_time_gran; 3389eefe2a2SStefan Roese 3399eefe2a2SStefan Roese /* 3409eefe2a2SStefan Roese * The next field is for VFS *only*. No filesystems have any business 3419eefe2a2SStefan Roese * even looking at it. You had been warned. 3429eefe2a2SStefan Roese */ 3439eefe2a2SStefan Roese struct mutex s_vfs_rename_mutex; /* Kludge */ 3449eefe2a2SStefan Roese 3459eefe2a2SStefan Roese /* 3469eefe2a2SStefan Roese * Filesystem subtype. If non-empty the filesystem type field 3479eefe2a2SStefan Roese * in /proc/mounts will be "type.subtype" 3489eefe2a2SStefan Roese */ 3499eefe2a2SStefan Roese char *s_subtype; 3509eefe2a2SStefan Roese 351ff94bc40SHeiko Schocher #ifndef __UBOOT__ 3529eefe2a2SStefan Roese /* 3539eefe2a2SStefan Roese * Saved mount options for lazy filesystems using 3549eefe2a2SStefan Roese * generic_show_options() 3559eefe2a2SStefan Roese */ 356ff94bc40SHeiko Schocher char __rcu *s_options; 357ff94bc40SHeiko Schocher #endif 358ff94bc40SHeiko Schocher const struct dentry_operations *s_d_op; /* default d_op for dentries */ 359ff94bc40SHeiko Schocher 360ff94bc40SHeiko Schocher /* 361ff94bc40SHeiko Schocher * Saved pool identifier for cleancache (-1 means none) 362ff94bc40SHeiko Schocher */ 363ff94bc40SHeiko Schocher int cleancache_poolid; 364ff94bc40SHeiko Schocher 365ff94bc40SHeiko Schocher #ifndef __UBOOT__ 366ff94bc40SHeiko Schocher struct shrinker s_shrink; /* per-sb shrinker handle */ 367ff94bc40SHeiko Schocher #endif 368ff94bc40SHeiko Schocher 369ff94bc40SHeiko Schocher /* Number of inodes with nlink == 0 but still referenced */ 370ff94bc40SHeiko Schocher atomic_long_t s_remove_count; 371ff94bc40SHeiko Schocher 372ff94bc40SHeiko Schocher /* Being remounted read-only */ 373ff94bc40SHeiko Schocher int s_readonly_remount; 374ff94bc40SHeiko Schocher 375ff94bc40SHeiko Schocher /* AIO completions deferred from interrupt context */ 376ff94bc40SHeiko Schocher struct workqueue_struct *s_dio_done_wq; 377ff94bc40SHeiko Schocher 378ff94bc40SHeiko Schocher #ifndef __UBOOT__ 379ff94bc40SHeiko Schocher /* 380ff94bc40SHeiko Schocher * Keep the lru lists last in the structure so they always sit on their 381ff94bc40SHeiko Schocher * own individual cachelines. 382ff94bc40SHeiko Schocher */ 383ff94bc40SHeiko Schocher struct list_lru s_dentry_lru ____cacheline_aligned_in_smp; 384ff94bc40SHeiko Schocher struct list_lru s_inode_lru ____cacheline_aligned_in_smp; 385ff94bc40SHeiko Schocher #endif 386ff94bc40SHeiko Schocher struct rcu_head rcu; 3879eefe2a2SStefan Roese }; 3889eefe2a2SStefan Roese 3899eefe2a2SStefan Roese struct file_system_type { 3909eefe2a2SStefan Roese const char *name; 3919eefe2a2SStefan Roese int fs_flags; 392ff94bc40SHeiko Schocher #define FS_REQUIRES_DEV 1 393ff94bc40SHeiko Schocher #define FS_BINARY_MOUNTDATA 2 394ff94bc40SHeiko Schocher #define FS_HAS_SUBTYPE 4 395ff94bc40SHeiko Schocher #define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ 396ff94bc40SHeiko Schocher #define FS_USERNS_DEV_MOUNT 16 /* A userns mount does not imply MNT_NODEV */ 397ff94bc40SHeiko Schocher #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */ 398ff94bc40SHeiko Schocher struct dentry *(*mount) (struct file_system_type *, int, 399ff94bc40SHeiko Schocher const char *, void *); 4009eefe2a2SStefan Roese void (*kill_sb) (struct super_block *); 4019eefe2a2SStefan Roese struct module *owner; 4029eefe2a2SStefan Roese struct file_system_type * next; 403ff94bc40SHeiko Schocher struct hlist_head fs_supers; 404ff94bc40SHeiko Schocher 405ff94bc40SHeiko Schocher #ifndef __UBOOT__ 406ff94bc40SHeiko Schocher struct lock_class_key s_lock_key; 407ff94bc40SHeiko Schocher struct lock_class_key s_umount_key; 408ff94bc40SHeiko Schocher struct lock_class_key s_vfs_rename_key; 409ff94bc40SHeiko Schocher struct lock_class_key s_writers_key[SB_FREEZE_LEVELS]; 410ff94bc40SHeiko Schocher 411ff94bc40SHeiko Schocher struct lock_class_key i_lock_key; 412ff94bc40SHeiko Schocher struct lock_class_key i_mutex_key; 413ff94bc40SHeiko Schocher struct lock_class_key i_mutex_dir_key; 414ff94bc40SHeiko Schocher #endif 4159eefe2a2SStefan Roese }; 4169eefe2a2SStefan Roese 417ff94bc40SHeiko Schocher /* include/linux/mount.h */ 4189eefe2a2SStefan Roese struct vfsmount { 4199eefe2a2SStefan Roese struct dentry *mnt_root; /* root of the mounted tree */ 4209eefe2a2SStefan Roese struct super_block *mnt_sb; /* pointer to superblock */ 4219eefe2a2SStefan Roese int mnt_flags; 4229eefe2a2SStefan Roese }; 4239eefe2a2SStefan Roese 4249eefe2a2SStefan Roese struct path { 4259eefe2a2SStefan Roese struct vfsmount *mnt; 4269eefe2a2SStefan Roese struct dentry *dentry; 4279eefe2a2SStefan Roese }; 4289eefe2a2SStefan Roese 4299eefe2a2SStefan Roese struct file { 4309eefe2a2SStefan Roese struct path f_path; 4319eefe2a2SStefan Roese #define f_dentry f_path.dentry 4329eefe2a2SStefan Roese #define f_vfsmnt f_path.mnt 4339eefe2a2SStefan Roese const struct file_operations *f_op; 4349eefe2a2SStefan Roese unsigned int f_flags; 4359eefe2a2SStefan Roese loff_t f_pos; 4369eefe2a2SStefan Roese unsigned int f_uid, f_gid; 4379eefe2a2SStefan Roese 4389eefe2a2SStefan Roese u64 f_version; 4399eefe2a2SStefan Roese #ifdef CONFIG_SECURITY 4409eefe2a2SStefan Roese void *f_security; 4419eefe2a2SStefan Roese #endif 4429eefe2a2SStefan Roese /* needed for tty driver, and maybe others */ 4439eefe2a2SStefan Roese void *private_data; 4449eefe2a2SStefan Roese 4459eefe2a2SStefan Roese #ifdef CONFIG_EPOLL 4469eefe2a2SStefan Roese /* Used by fs/eventpoll.c to link all the hooks to this file */ 4479eefe2a2SStefan Roese struct list_head f_ep_links; 4489eefe2a2SStefan Roese spinlock_t f_ep_lock; 4499eefe2a2SStefan Roese #endif /* #ifdef CONFIG_EPOLL */ 4509eefe2a2SStefan Roese #ifdef CONFIG_DEBUG_WRITECOUNT 4519eefe2a2SStefan Roese unsigned long f_mnt_write_state; 4529eefe2a2SStefan Roese #endif 4539eefe2a2SStefan Roese }; 4549eefe2a2SStefan Roese 4559eefe2a2SStefan Roese /* 4569eefe2a2SStefan Roese * get_seconds() not really needed in the read-only implmentation 4579eefe2a2SStefan Roese */ 4589eefe2a2SStefan Roese #define get_seconds() 0 4599eefe2a2SStefan Roese 4609eefe2a2SStefan Roese /* 4k page size */ 4619eefe2a2SStefan Roese #define PAGE_CACHE_SHIFT 12 4629eefe2a2SStefan Roese #define PAGE_CACHE_SIZE (1 << PAGE_CACHE_SHIFT) 4639eefe2a2SStefan Roese 4649eefe2a2SStefan Roese /* Page cache limit. The filesystems should put that into their s_maxbytes 4659eefe2a2SStefan Roese limits, otherwise bad things can happen in VM. */ 4669eefe2a2SStefan Roese #if BITS_PER_LONG==32 4679eefe2a2SStefan Roese #define MAX_LFS_FILESIZE (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) 4689eefe2a2SStefan Roese #elif BITS_PER_LONG==64 4699eefe2a2SStefan Roese #define MAX_LFS_FILESIZE 0x7fffffffffffffffUL 4709eefe2a2SStefan Roese #endif 4719eefe2a2SStefan Roese 4729eefe2a2SStefan Roese /* 4739eefe2a2SStefan Roese * These are the fs-independent mount-flags: up to 32 flags are supported 4749eefe2a2SStefan Roese */ 4759eefe2a2SStefan Roese #define MS_RDONLY 1 /* Mount read-only */ 4769eefe2a2SStefan Roese #define MS_NOSUID 2 /* Ignore suid and sgid bits */ 4779eefe2a2SStefan Roese #define MS_NODEV 4 /* Disallow access to device special files */ 4789eefe2a2SStefan Roese #define MS_NOEXEC 8 /* Disallow program execution */ 4799eefe2a2SStefan Roese #define MS_SYNCHRONOUS 16 /* Writes are synced at once */ 4809eefe2a2SStefan Roese #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ 4819eefe2a2SStefan Roese #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ 4829eefe2a2SStefan Roese #define MS_DIRSYNC 128 /* Directory modifications are synchronous */ 4839eefe2a2SStefan Roese #define MS_NOATIME 1024 /* Do not update access times. */ 4849eefe2a2SStefan Roese #define MS_NODIRATIME 2048 /* Do not update directory access times */ 4859eefe2a2SStefan Roese #define MS_BIND 4096 4869eefe2a2SStefan Roese #define MS_MOVE 8192 4879eefe2a2SStefan Roese #define MS_REC 16384 4889eefe2a2SStefan Roese #define MS_VERBOSE 32768 /* War is peace. Verbosity is silence. 4899eefe2a2SStefan Roese MS_VERBOSE is deprecated. */ 4909eefe2a2SStefan Roese #define MS_SILENT 32768 4919eefe2a2SStefan Roese #define MS_POSIXACL (1<<16) /* VFS does not apply the umask */ 4929eefe2a2SStefan Roese #define MS_UNBINDABLE (1<<17) /* change to unbindable */ 4939eefe2a2SStefan Roese #define MS_PRIVATE (1<<18) /* change to private */ 4949eefe2a2SStefan Roese #define MS_SLAVE (1<<19) /* change to slave */ 4959eefe2a2SStefan Roese #define MS_SHARED (1<<20) /* change to shared */ 4969eefe2a2SStefan Roese #define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */ 4979eefe2a2SStefan Roese #define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */ 4989eefe2a2SStefan Roese #define MS_I_VERSION (1<<23) /* Update inode I_version field */ 4999eefe2a2SStefan Roese #define MS_ACTIVE (1<<30) 5009eefe2a2SStefan Roese #define MS_NOUSER (1<<31) 5019eefe2a2SStefan Roese 5029eefe2a2SStefan Roese #define I_NEW 8 5039eefe2a2SStefan Roese 5049eefe2a2SStefan Roese /* Inode flags - they have nothing to superblock flags now */ 5059eefe2a2SStefan Roese 5069eefe2a2SStefan Roese #define S_SYNC 1 /* Writes are synced at once */ 5079eefe2a2SStefan Roese #define S_NOATIME 2 /* Do not update access times */ 5089eefe2a2SStefan Roese #define S_APPEND 4 /* Append-only file */ 5099eefe2a2SStefan Roese #define S_IMMUTABLE 8 /* Immutable file */ 5109eefe2a2SStefan Roese #define S_DEAD 16 /* removed, but still open directory */ 5119eefe2a2SStefan Roese #define S_NOQUOTA 32 /* Inode is not counted to quota */ 5129eefe2a2SStefan Roese #define S_DIRSYNC 64 /* Directory modifications are synchronous */ 5139eefe2a2SStefan Roese #define S_NOCMTIME 128 /* Do not update file c/mtime */ 5149eefe2a2SStefan Roese #define S_SWAPFILE 256 /* Do not truncate: swapon got its bmaps */ 5159eefe2a2SStefan Roese #define S_PRIVATE 512 /* Inode is fs-internal */ 5169eefe2a2SStefan Roese 5179eefe2a2SStefan Roese /* include/linux/stat.h */ 5189eefe2a2SStefan Roese 5199eefe2a2SStefan Roese #define S_IFMT 00170000 5209eefe2a2SStefan Roese #define S_IFSOCK 0140000 5219eefe2a2SStefan Roese #define S_IFLNK 0120000 5229eefe2a2SStefan Roese #define S_IFREG 0100000 5239eefe2a2SStefan Roese #define S_IFBLK 0060000 5249eefe2a2SStefan Roese #define S_IFDIR 0040000 5259eefe2a2SStefan Roese #define S_IFCHR 0020000 5269eefe2a2SStefan Roese #define S_IFIFO 0010000 5279eefe2a2SStefan Roese #define S_ISUID 0004000 5289eefe2a2SStefan Roese #define S_ISGID 0002000 5299eefe2a2SStefan Roese #define S_ISVTX 0001000 5309eefe2a2SStefan Roese 5319eefe2a2SStefan Roese /* include/linux/fs.h */ 5329eefe2a2SStefan Roese 5339eefe2a2SStefan Roese /* 5349eefe2a2SStefan Roese * File types 5359eefe2a2SStefan Roese * 5369eefe2a2SStefan Roese * NOTE! These match bits 12..15 of stat.st_mode 5379eefe2a2SStefan Roese * (ie "(i_mode >> 12) & 15"). 5389eefe2a2SStefan Roese */ 5399eefe2a2SStefan Roese #define DT_UNKNOWN 0 5409eefe2a2SStefan Roese #define DT_FIFO 1 5419eefe2a2SStefan Roese #define DT_CHR 2 5429eefe2a2SStefan Roese #define DT_DIR 4 5439eefe2a2SStefan Roese #define DT_BLK 6 5449eefe2a2SStefan Roese #define DT_REG 8 5459eefe2a2SStefan Roese #define DT_LNK 10 5469eefe2a2SStefan Roese #define DT_SOCK 12 5479eefe2a2SStefan Roese #define DT_WHT 14 5489eefe2a2SStefan Roese 5499eefe2a2SStefan Roese #define I_DIRTY_SYNC 1 5509eefe2a2SStefan Roese #define I_DIRTY_DATASYNC 2 5519eefe2a2SStefan Roese #define I_DIRTY_PAGES 4 5529eefe2a2SStefan Roese #define I_NEW 8 5539eefe2a2SStefan Roese #define I_WILL_FREE 16 5549eefe2a2SStefan Roese #define I_FREEING 32 5559eefe2a2SStefan Roese #define I_CLEAR 64 5569eefe2a2SStefan Roese #define __I_LOCK 7 5579eefe2a2SStefan Roese #define I_LOCK (1 << __I_LOCK) 5589eefe2a2SStefan Roese #define __I_SYNC 8 5599eefe2a2SStefan Roese #define I_SYNC (1 << __I_SYNC) 5609eefe2a2SStefan Roese 5619eefe2a2SStefan Roese #define I_DIRTY (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_PAGES) 5629eefe2a2SStefan Roese 5639eefe2a2SStefan Roese /* linux/include/dcache.h */ 5649eefe2a2SStefan Roese 5659eefe2a2SStefan Roese #define DNAME_INLINE_LEN_MIN 36 5669eefe2a2SStefan Roese 5679eefe2a2SStefan Roese struct dentry { 5689eefe2a2SStefan Roese unsigned int d_flags; /* protected by d_lock */ 5699eefe2a2SStefan Roese spinlock_t d_lock; /* per dentry lock */ 5709eefe2a2SStefan Roese struct inode *d_inode; /* Where the name belongs to - NULL is 5719eefe2a2SStefan Roese * negative */ 5729eefe2a2SStefan Roese /* 5739eefe2a2SStefan Roese * The next three fields are touched by __d_lookup. Place them here 5749eefe2a2SStefan Roese * so they all fit in a cache line. 5759eefe2a2SStefan Roese */ 5769eefe2a2SStefan Roese struct hlist_node d_hash; /* lookup hash list */ 5779eefe2a2SStefan Roese struct dentry *d_parent; /* parent directory */ 5789eefe2a2SStefan Roese struct qstr d_name; 5799eefe2a2SStefan Roese 5809eefe2a2SStefan Roese struct list_head d_lru; /* LRU list */ 5819eefe2a2SStefan Roese /* 5829eefe2a2SStefan Roese * d_child and d_rcu can share memory 5839eefe2a2SStefan Roese */ 5849eefe2a2SStefan Roese struct list_head d_subdirs; /* our children */ 5859eefe2a2SStefan Roese struct list_head d_alias; /* inode alias list */ 5869eefe2a2SStefan Roese unsigned long d_time; /* used by d_revalidate */ 5879eefe2a2SStefan Roese struct super_block *d_sb; /* The root of the dentry tree */ 5889eefe2a2SStefan Roese void *d_fsdata; /* fs-specific data */ 5899eefe2a2SStefan Roese #ifdef CONFIG_PROFILING 5909eefe2a2SStefan Roese struct dcookie_struct *d_cookie; /* cookie, if any */ 5919eefe2a2SStefan Roese #endif 5929eefe2a2SStefan Roese int d_mounted; 5939eefe2a2SStefan Roese unsigned char d_iname[DNAME_INLINE_LEN_MIN]; /* small names */ 5949eefe2a2SStefan Roese }; 5959eefe2a2SStefan Roese 5969eefe2a2SStefan Roese static inline ino_t parent_ino(struct dentry *dentry) 5979eefe2a2SStefan Roese { 5989eefe2a2SStefan Roese ino_t res; 5999eefe2a2SStefan Roese 6009eefe2a2SStefan Roese spin_lock(&dentry->d_lock); 6019eefe2a2SStefan Roese res = dentry->d_parent->d_inode->i_ino; 6029eefe2a2SStefan Roese spin_unlock(&dentry->d_lock); 6039eefe2a2SStefan Roese return res; 6049eefe2a2SStefan Roese } 6059eefe2a2SStefan Roese 6069eefe2a2SStefan Roese /* debug.c */ 6079eefe2a2SStefan Roese 6089eefe2a2SStefan Roese #define module_param_named(...) 6099eefe2a2SStefan Roese 6109eefe2a2SStefan Roese /* misc.h */ 6119eefe2a2SStefan Roese #define mutex_lock_nested(...) 6129eefe2a2SStefan Roese #define mutex_unlock_nested(...) 61305ea83b6SBradley Bolen #define mutex_is_locked(...) 1 614ff94bc40SHeiko Schocher #endif 6159eefe2a2SStefan Roese 6169eefe2a2SStefan Roese /* Version of this UBIFS implementation */ 6179eefe2a2SStefan Roese #define UBIFS_VERSION 1 6189eefe2a2SStefan Roese 6199eefe2a2SStefan Roese /* Normal UBIFS messages */ 620e9951281SPetr Vorel #ifdef CONFIG_UBIFS_SILENCE_MSG 621e9951281SPetr Vorel #define ubifs_msg(c, fmt, ...) 622e9951281SPetr Vorel #else 6230195a7bbSHeiko Schocher #define ubifs_msg(c, fmt, ...) \ 6240195a7bbSHeiko Schocher pr_notice("UBIFS (ubi%d:%d): " fmt "\n", \ 6250195a7bbSHeiko Schocher (c)->vi.ubi_num, (c)->vi.vol_id, ##__VA_ARGS__) 626e9951281SPetr Vorel #endif 6279eefe2a2SStefan Roese /* UBIFS error messages */ 628ff94bc40SHeiko Schocher #ifndef __UBOOT__ 6290195a7bbSHeiko Schocher #define ubifs_err(c, fmt, ...) \ 6300195a7bbSHeiko Schocher pr_err("UBIFS error (ubi%d:%d pid %d): %s: " fmt "\n", \ 6310195a7bbSHeiko Schocher (c)->vi.ubi_num, (c)->vi.vol_id, current->pid, \ 6329eefe2a2SStefan Roese __func__, ##__VA_ARGS__) 6339eefe2a2SStefan Roese /* UBIFS warning messages */ 6340195a7bbSHeiko Schocher #define ubifs_warn(c, fmt, ...) \ 6350195a7bbSHeiko Schocher pr_warn("UBIFS warning (ubi%d:%d pid %d): %s: " fmt "\n", \ 6360195a7bbSHeiko Schocher (c)->vi.ubi_num, (c)->vi.vol_id, current->pid, \ 6370195a7bbSHeiko Schocher __func__, ##__VA_ARGS__) 638ff94bc40SHeiko Schocher #else 6390195a7bbSHeiko Schocher #define ubifs_err(c, fmt, ...) \ 6400195a7bbSHeiko Schocher pr_err("UBIFS error (ubi%d:%d pid %d): %s: " fmt "\n", \ 6410195a7bbSHeiko Schocher (c)->vi.ubi_num, (c)->vi.vol_id, 0, \ 6420195a7bbSHeiko Schocher __func__, ##__VA_ARGS__) 643ff94bc40SHeiko Schocher /* UBIFS warning messages */ 6440195a7bbSHeiko Schocher #define ubifs_warn(c, fmt, ...) \ 6450195a7bbSHeiko Schocher pr_warn("UBIFS warning (ubi%d:%d pid %d): %s: " fmt "\n", \ 6460195a7bbSHeiko Schocher (c)->vi.ubi_num, (c)->vi.vol_id, 0, \ 6470195a7bbSHeiko Schocher __func__, ##__VA_ARGS__) 6480195a7bbSHeiko Schocher 649ff94bc40SHeiko Schocher #endif 6509eefe2a2SStefan Roese 6510195a7bbSHeiko Schocher /* 6520195a7bbSHeiko Schocher * A variant of 'ubifs_err()' which takes the UBIFS file-sytem description 6530195a7bbSHeiko Schocher * object as an argument. 6540195a7bbSHeiko Schocher */ 6550195a7bbSHeiko Schocher #define ubifs_errc(c, fmt, ...) \ 6560195a7bbSHeiko Schocher do { \ 6570195a7bbSHeiko Schocher if (!(c)->probing) \ 6580195a7bbSHeiko Schocher ubifs_err(c, fmt, ##__VA_ARGS__); \ 6590195a7bbSHeiko Schocher } while (0) 6600195a7bbSHeiko Schocher 6619eefe2a2SStefan Roese /* UBIFS file system VFS magic number */ 6629eefe2a2SStefan Roese #define UBIFS_SUPER_MAGIC 0x24051905 6639eefe2a2SStefan Roese 6649eefe2a2SStefan Roese /* Number of UBIFS blocks per VFS page */ 6659eefe2a2SStefan Roese #define UBIFS_BLOCKS_PER_PAGE (PAGE_CACHE_SIZE / UBIFS_BLOCK_SIZE) 6669eefe2a2SStefan Roese #define UBIFS_BLOCKS_PER_PAGE_SHIFT (PAGE_CACHE_SHIFT - UBIFS_BLOCK_SHIFT) 6679eefe2a2SStefan Roese 6689eefe2a2SStefan Roese /* "File system end of life" sequence number watermark */ 6699eefe2a2SStefan Roese #define SQNUM_WARN_WATERMARK 0xFFFFFFFF00000000ULL 6709eefe2a2SStefan Roese #define SQNUM_WATERMARK 0xFFFFFFFFFF000000ULL 6719eefe2a2SStefan Roese 6729eefe2a2SStefan Roese /* 6739eefe2a2SStefan Roese * Minimum amount of LEBs reserved for the index. At present the index needs at 6749eefe2a2SStefan Roese * least 2 LEBs: one for the index head and one for in-the-gaps method (which 6759eefe2a2SStefan Roese * currently does not cater for the index head and so excludes it from 6769eefe2a2SStefan Roese * consideration). 6779eefe2a2SStefan Roese */ 6789eefe2a2SStefan Roese #define MIN_INDEX_LEBS 2 6799eefe2a2SStefan Roese 6809eefe2a2SStefan Roese /* Minimum amount of data UBIFS writes to the flash */ 6819eefe2a2SStefan Roese #define MIN_WRITE_SZ (UBIFS_DATA_NODE_SZ + 8) 6829eefe2a2SStefan Roese 6839eefe2a2SStefan Roese /* 6849eefe2a2SStefan Roese * Currently we do not support inode number overlapping and re-using, so this 6859eefe2a2SStefan Roese * watermark defines dangerous inode number level. This should be fixed later, 6869eefe2a2SStefan Roese * although it is difficult to exceed current limit. Another option is to use 6879eefe2a2SStefan Roese * 64-bit inode numbers, but this means more overhead. 6889eefe2a2SStefan Roese */ 6899eefe2a2SStefan Roese #define INUM_WARN_WATERMARK 0xFFF00000 6909eefe2a2SStefan Roese #define INUM_WATERMARK 0xFFFFFF00 6919eefe2a2SStefan Roese 6929eefe2a2SStefan Roese /* Maximum number of entries in each LPT (LEB category) heap */ 6939eefe2a2SStefan Roese #define LPT_HEAP_SZ 256 6949eefe2a2SStefan Roese 6959eefe2a2SStefan Roese /* 6969eefe2a2SStefan Roese * Background thread name pattern. The numbers are UBI device and volume 6979eefe2a2SStefan Roese * numbers. 6989eefe2a2SStefan Roese */ 6999eefe2a2SStefan Roese #define BGT_NAME_PATTERN "ubifs_bgt%d_%d" 7009eefe2a2SStefan Roese 701ff94bc40SHeiko Schocher /* Write-buffer synchronization timeout interval in seconds */ 702ff94bc40SHeiko Schocher #define WBUF_TIMEOUT_SOFTLIMIT 3 703ff94bc40SHeiko Schocher #define WBUF_TIMEOUT_HARDLIMIT 5 7049eefe2a2SStefan Roese 7059eefe2a2SStefan Roese /* Maximum possible inode number (only 32-bit inodes are supported now) */ 7069eefe2a2SStefan Roese #define MAX_INUM 0xFFFFFFFF 7079eefe2a2SStefan Roese 7089eefe2a2SStefan Roese /* Number of non-data journal heads */ 7099eefe2a2SStefan Roese #define NONDATA_JHEADS_CNT 2 7109eefe2a2SStefan Roese 711ff94bc40SHeiko Schocher /* Shorter names for journal head numbers for internal usage */ 712ff94bc40SHeiko Schocher #define GCHD UBIFS_GC_HEAD 713ff94bc40SHeiko Schocher #define BASEHD UBIFS_BASE_HEAD 714ff94bc40SHeiko Schocher #define DATAHD UBIFS_DATA_HEAD 7159eefe2a2SStefan Roese 7169eefe2a2SStefan Roese /* 'No change' value for 'ubifs_change_lp()' */ 7179eefe2a2SStefan Roese #define LPROPS_NC 0x80000001 7189eefe2a2SStefan Roese 7199eefe2a2SStefan Roese /* 7209eefe2a2SStefan Roese * There is no notion of truncation key because truncation nodes do not exist 7219eefe2a2SStefan Roese * in TNC. However, when replaying, it is handy to introduce fake "truncation" 7229eefe2a2SStefan Roese * keys for truncation nodes because the code becomes simpler. So we define 7239eefe2a2SStefan Roese * %UBIFS_TRUN_KEY type. 724ff94bc40SHeiko Schocher * 725ff94bc40SHeiko Schocher * But otherwise, out of the journal reply scope, the truncation keys are 726ff94bc40SHeiko Schocher * invalid. 7279eefe2a2SStefan Roese */ 7289eefe2a2SStefan Roese #define UBIFS_TRUN_KEY UBIFS_KEY_TYPES_CNT 729ff94bc40SHeiko Schocher #define UBIFS_INVALID_KEY UBIFS_KEY_TYPES_CNT 7309eefe2a2SStefan Roese 7319eefe2a2SStefan Roese /* 7329eefe2a2SStefan Roese * How much a directory entry/extended attribute entry adds to the parent/host 7339eefe2a2SStefan Roese * inode. 7349eefe2a2SStefan Roese */ 7359eefe2a2SStefan Roese #define CALC_DENT_SIZE(name_len) ALIGN(UBIFS_DENT_NODE_SZ + (name_len) + 1, 8) 7369eefe2a2SStefan Roese 7379eefe2a2SStefan Roese /* How much an extended attribute adds to the host inode */ 7389eefe2a2SStefan Roese #define CALC_XATTR_BYTES(data_len) ALIGN(UBIFS_INO_NODE_SZ + (data_len) + 1, 8) 7399eefe2a2SStefan Roese 7409eefe2a2SStefan Roese /* 7419eefe2a2SStefan Roese * Znodes which were not touched for 'OLD_ZNODE_AGE' seconds are considered 7429eefe2a2SStefan Roese * "old", and znode which were touched last 'YOUNG_ZNODE_AGE' seconds ago are 7439eefe2a2SStefan Roese * considered "young". This is used by shrinker when selecting znode to trim 7449eefe2a2SStefan Roese * off. 7459eefe2a2SStefan Roese */ 7469eefe2a2SStefan Roese #define OLD_ZNODE_AGE 20 7479eefe2a2SStefan Roese #define YOUNG_ZNODE_AGE 5 7489eefe2a2SStefan Roese 7499eefe2a2SStefan Roese /* 7509eefe2a2SStefan Roese * Some compressors, like LZO, may end up with more data then the input buffer. 7519eefe2a2SStefan Roese * So UBIFS always allocates larger output buffer, to be sure the compressor 7529eefe2a2SStefan Roese * will not corrupt memory in case of worst case compression. 7539eefe2a2SStefan Roese */ 7549eefe2a2SStefan Roese #define WORST_COMPR_FACTOR 2 7559eefe2a2SStefan Roese 756ff94bc40SHeiko Schocher /* 7570195a7bbSHeiko Schocher * How much memory is needed for a buffer where we compress a data node. 758ff94bc40SHeiko Schocher */ 759ff94bc40SHeiko Schocher #define COMPRESSED_DATA_NODE_BUF_SZ \ 760ff94bc40SHeiko Schocher (UBIFS_DATA_NODE_SZ + UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR) 761ff94bc40SHeiko Schocher 7629eefe2a2SStefan Roese /* Maximum expected tree height for use by bottom_up_buf */ 7639eefe2a2SStefan Roese #define BOTTOM_UP_HEIGHT 64 7649eefe2a2SStefan Roese 7659eefe2a2SStefan Roese /* Maximum number of data nodes to bulk-read */ 7669eefe2a2SStefan Roese #define UBIFS_MAX_BULK_READ 32 7679eefe2a2SStefan Roese 7689eefe2a2SStefan Roese /* 7699eefe2a2SStefan Roese * Lockdep classes for UBIFS inode @ui_mutex. 7709eefe2a2SStefan Roese */ 7719eefe2a2SStefan Roese enum { 7729eefe2a2SStefan Roese WB_MUTEX_1 = 0, 7739eefe2a2SStefan Roese WB_MUTEX_2 = 1, 7749eefe2a2SStefan Roese WB_MUTEX_3 = 2, 7759eefe2a2SStefan Roese }; 7769eefe2a2SStefan Roese 7779eefe2a2SStefan Roese /* 7789eefe2a2SStefan Roese * Znode flags (actually, bit numbers which store the flags). 7799eefe2a2SStefan Roese * 7809eefe2a2SStefan Roese * DIRTY_ZNODE: znode is dirty 7819eefe2a2SStefan Roese * COW_ZNODE: znode is being committed and a new instance of this znode has to 7829eefe2a2SStefan Roese * be created before changing this znode 7839eefe2a2SStefan Roese * OBSOLETE_ZNODE: znode is obsolete, which means it was deleted, but it is 7849eefe2a2SStefan Roese * still in the commit list and the ongoing commit operation 7859eefe2a2SStefan Roese * will commit it, and delete this znode after it is done 7869eefe2a2SStefan Roese */ 7879eefe2a2SStefan Roese enum { 7889eefe2a2SStefan Roese DIRTY_ZNODE = 0, 7899eefe2a2SStefan Roese COW_ZNODE = 1, 7909eefe2a2SStefan Roese OBSOLETE_ZNODE = 2, 7919eefe2a2SStefan Roese }; 7929eefe2a2SStefan Roese 7939eefe2a2SStefan Roese /* 7949eefe2a2SStefan Roese * Commit states. 7959eefe2a2SStefan Roese * 7969eefe2a2SStefan Roese * COMMIT_RESTING: commit is not wanted 7979eefe2a2SStefan Roese * COMMIT_BACKGROUND: background commit has been requested 7989eefe2a2SStefan Roese * COMMIT_REQUIRED: commit is required 7999eefe2a2SStefan Roese * COMMIT_RUNNING_BACKGROUND: background commit is running 8009eefe2a2SStefan Roese * COMMIT_RUNNING_REQUIRED: commit is running and it is required 8019eefe2a2SStefan Roese * COMMIT_BROKEN: commit failed 8029eefe2a2SStefan Roese */ 8039eefe2a2SStefan Roese enum { 8049eefe2a2SStefan Roese COMMIT_RESTING = 0, 8059eefe2a2SStefan Roese COMMIT_BACKGROUND, 8069eefe2a2SStefan Roese COMMIT_REQUIRED, 8079eefe2a2SStefan Roese COMMIT_RUNNING_BACKGROUND, 8089eefe2a2SStefan Roese COMMIT_RUNNING_REQUIRED, 8099eefe2a2SStefan Roese COMMIT_BROKEN, 8109eefe2a2SStefan Roese }; 8119eefe2a2SStefan Roese 8129eefe2a2SStefan Roese /* 8139eefe2a2SStefan Roese * 'ubifs_scan_a_node()' return values. 8149eefe2a2SStefan Roese * 8159eefe2a2SStefan Roese * SCANNED_GARBAGE: scanned garbage 8169eefe2a2SStefan Roese * SCANNED_EMPTY_SPACE: scanned empty space 8179eefe2a2SStefan Roese * SCANNED_A_NODE: scanned a valid node 8189eefe2a2SStefan Roese * SCANNED_A_CORRUPT_NODE: scanned a corrupted node 8199eefe2a2SStefan Roese * SCANNED_A_BAD_PAD_NODE: scanned a padding node with invalid pad length 8209eefe2a2SStefan Roese * 8219eefe2a2SStefan Roese * Greater than zero means: 'scanned that number of padding bytes' 8229eefe2a2SStefan Roese */ 8239eefe2a2SStefan Roese enum { 8249eefe2a2SStefan Roese SCANNED_GARBAGE = 0, 8259eefe2a2SStefan Roese SCANNED_EMPTY_SPACE = -1, 8269eefe2a2SStefan Roese SCANNED_A_NODE = -2, 8279eefe2a2SStefan Roese SCANNED_A_CORRUPT_NODE = -3, 8289eefe2a2SStefan Roese SCANNED_A_BAD_PAD_NODE = -4, 8299eefe2a2SStefan Roese }; 8309eefe2a2SStefan Roese 8319eefe2a2SStefan Roese /* 8329eefe2a2SStefan Roese * LPT cnode flag bits. 8339eefe2a2SStefan Roese * 8349eefe2a2SStefan Roese * DIRTY_CNODE: cnode is dirty 8359eefe2a2SStefan Roese * OBSOLETE_CNODE: cnode is being committed and has been copied (or deleted), 8369eefe2a2SStefan Roese * so it can (and must) be freed when the commit is finished 837ff94bc40SHeiko Schocher * COW_CNODE: cnode is being committed and must be copied before writing 8389eefe2a2SStefan Roese */ 8399eefe2a2SStefan Roese enum { 8409eefe2a2SStefan Roese DIRTY_CNODE = 0, 841ff94bc40SHeiko Schocher OBSOLETE_CNODE = 1, 842ff94bc40SHeiko Schocher COW_CNODE = 2, 8439eefe2a2SStefan Roese }; 8449eefe2a2SStefan Roese 8459eefe2a2SStefan Roese /* 8469eefe2a2SStefan Roese * Dirty flag bits (lpt_drty_flgs) for LPT special nodes. 8479eefe2a2SStefan Roese * 8489eefe2a2SStefan Roese * LTAB_DIRTY: ltab node is dirty 8499eefe2a2SStefan Roese * LSAVE_DIRTY: lsave node is dirty 8509eefe2a2SStefan Roese */ 8519eefe2a2SStefan Roese enum { 8529eefe2a2SStefan Roese LTAB_DIRTY = 1, 8539eefe2a2SStefan Roese LSAVE_DIRTY = 2, 8549eefe2a2SStefan Roese }; 8559eefe2a2SStefan Roese 8569eefe2a2SStefan Roese /* 8579eefe2a2SStefan Roese * Return codes used by the garbage collector. 8589eefe2a2SStefan Roese * @LEB_FREED: the logical eraseblock was freed and is ready to use 8599eefe2a2SStefan Roese * @LEB_FREED_IDX: indexing LEB was freed and can be used only after the commit 8609eefe2a2SStefan Roese * @LEB_RETAINED: the logical eraseblock was freed and retained for GC purposes 8619eefe2a2SStefan Roese */ 8629eefe2a2SStefan Roese enum { 8639eefe2a2SStefan Roese LEB_FREED, 8649eefe2a2SStefan Roese LEB_FREED_IDX, 8659eefe2a2SStefan Roese LEB_RETAINED, 8669eefe2a2SStefan Roese }; 8679eefe2a2SStefan Roese 8689eefe2a2SStefan Roese /** 8699eefe2a2SStefan Roese * struct ubifs_old_idx - index node obsoleted since last commit start. 8709eefe2a2SStefan Roese * @rb: rb-tree node 8719eefe2a2SStefan Roese * @lnum: LEB number of obsoleted index node 8729eefe2a2SStefan Roese * @offs: offset of obsoleted index node 8739eefe2a2SStefan Roese */ 8749eefe2a2SStefan Roese struct ubifs_old_idx { 8759eefe2a2SStefan Roese struct rb_node rb; 8769eefe2a2SStefan Roese int lnum; 8779eefe2a2SStefan Roese int offs; 8789eefe2a2SStefan Roese }; 8799eefe2a2SStefan Roese 8809eefe2a2SStefan Roese /* The below union makes it easier to deal with keys */ 8819eefe2a2SStefan Roese union ubifs_key { 882ff94bc40SHeiko Schocher uint8_t u8[UBIFS_SK_LEN]; 883ff94bc40SHeiko Schocher uint32_t u32[UBIFS_SK_LEN/4]; 884ff94bc40SHeiko Schocher uint64_t u64[UBIFS_SK_LEN/8]; 885ff94bc40SHeiko Schocher __le32 j32[UBIFS_SK_LEN/4]; 8869eefe2a2SStefan Roese }; 8879eefe2a2SStefan Roese 8889eefe2a2SStefan Roese /** 8899eefe2a2SStefan Roese * struct ubifs_scan_node - UBIFS scanned node information. 8909eefe2a2SStefan Roese * @list: list of scanned nodes 8919eefe2a2SStefan Roese * @key: key of node scanned (if it has one) 8929eefe2a2SStefan Roese * @sqnum: sequence number 8939eefe2a2SStefan Roese * @type: type of node scanned 8949eefe2a2SStefan Roese * @offs: offset with LEB of node scanned 8959eefe2a2SStefan Roese * @len: length of node scanned 8969eefe2a2SStefan Roese * @node: raw node 8979eefe2a2SStefan Roese */ 8989eefe2a2SStefan Roese struct ubifs_scan_node { 8999eefe2a2SStefan Roese struct list_head list; 9009eefe2a2SStefan Roese union ubifs_key key; 9019eefe2a2SStefan Roese unsigned long long sqnum; 9029eefe2a2SStefan Roese int type; 9039eefe2a2SStefan Roese int offs; 9049eefe2a2SStefan Roese int len; 9059eefe2a2SStefan Roese void *node; 9069eefe2a2SStefan Roese }; 9079eefe2a2SStefan Roese 9089eefe2a2SStefan Roese /** 9099eefe2a2SStefan Roese * struct ubifs_scan_leb - UBIFS scanned LEB information. 9109eefe2a2SStefan Roese * @lnum: logical eraseblock number 9119eefe2a2SStefan Roese * @nodes_cnt: number of nodes scanned 9129eefe2a2SStefan Roese * @nodes: list of struct ubifs_scan_node 9139eefe2a2SStefan Roese * @endpt: end point (and therefore the start of empty space) 9149eefe2a2SStefan Roese * @buf: buffer containing entire LEB scanned 9159eefe2a2SStefan Roese */ 9169eefe2a2SStefan Roese struct ubifs_scan_leb { 9179eefe2a2SStefan Roese int lnum; 9189eefe2a2SStefan Roese int nodes_cnt; 9199eefe2a2SStefan Roese struct list_head nodes; 9209eefe2a2SStefan Roese int endpt; 9219eefe2a2SStefan Roese void *buf; 9229eefe2a2SStefan Roese }; 9239eefe2a2SStefan Roese 9249eefe2a2SStefan Roese /** 9259eefe2a2SStefan Roese * struct ubifs_gced_idx_leb - garbage-collected indexing LEB. 9269eefe2a2SStefan Roese * @list: list 9279eefe2a2SStefan Roese * @lnum: LEB number 9289eefe2a2SStefan Roese * @unmap: OK to unmap this LEB 9299eefe2a2SStefan Roese * 9309eefe2a2SStefan Roese * This data structure is used to temporary store garbage-collected indexing 9319eefe2a2SStefan Roese * LEBs - they are not released immediately, but only after the next commit. 9329eefe2a2SStefan Roese * This is needed to guarantee recoverability. 9339eefe2a2SStefan Roese */ 9349eefe2a2SStefan Roese struct ubifs_gced_idx_leb { 9359eefe2a2SStefan Roese struct list_head list; 9369eefe2a2SStefan Roese int lnum; 9379eefe2a2SStefan Roese int unmap; 9389eefe2a2SStefan Roese }; 9399eefe2a2SStefan Roese 9409eefe2a2SStefan Roese /** 9419eefe2a2SStefan Roese * struct ubifs_inode - UBIFS in-memory inode description. 9429eefe2a2SStefan Roese * @vfs_inode: VFS inode description object 9439eefe2a2SStefan Roese * @creat_sqnum: sequence number at time of creation 9449eefe2a2SStefan Roese * @del_cmtno: commit number corresponding to the time the inode was deleted, 9459eefe2a2SStefan Roese * protected by @c->commit_sem; 9469eefe2a2SStefan Roese * @xattr_size: summarized size of all extended attributes in bytes 9479eefe2a2SStefan Roese * @xattr_cnt: count of extended attributes this inode has 9489eefe2a2SStefan Roese * @xattr_names: sum of lengths of all extended attribute names belonging to 9499eefe2a2SStefan Roese * this inode 9509eefe2a2SStefan Roese * @dirty: non-zero if the inode is dirty 9519eefe2a2SStefan Roese * @xattr: non-zero if this is an extended attribute inode 9529eefe2a2SStefan Roese * @bulk_read: non-zero if bulk-read should be used 9539eefe2a2SStefan Roese * @ui_mutex: serializes inode write-back with the rest of VFS operations, 9549eefe2a2SStefan Roese * serializes "clean <-> dirty" state changes, serializes bulk-read, 9559eefe2a2SStefan Roese * protects @dirty, @bulk_read, @ui_size, and @xattr_size 9569eefe2a2SStefan Roese * @ui_lock: protects @synced_i_size 9579eefe2a2SStefan Roese * @synced_i_size: synchronized size of inode, i.e. the value of inode size 9589eefe2a2SStefan Roese * currently stored on the flash; used only for regular file 9599eefe2a2SStefan Roese * inodes 9609eefe2a2SStefan Roese * @ui_size: inode size used by UBIFS when writing to flash 9619eefe2a2SStefan Roese * @flags: inode flags (@UBIFS_COMPR_FL, etc) 9629eefe2a2SStefan Roese * @compr_type: default compression type used for this inode 9639eefe2a2SStefan Roese * @last_page_read: page number of last page read (for bulk read) 9649eefe2a2SStefan Roese * @read_in_a_row: number of consecutive pages read in a row (for bulk read) 9659eefe2a2SStefan Roese * @data_len: length of the data attached to the inode 9669eefe2a2SStefan Roese * @data: inode's data 9679eefe2a2SStefan Roese * 9689eefe2a2SStefan Roese * @ui_mutex exists for two main reasons. At first it prevents inodes from 9699eefe2a2SStefan Roese * being written back while UBIFS changing them, being in the middle of an VFS 9709eefe2a2SStefan Roese * operation. This way UBIFS makes sure the inode fields are consistent. For 9719eefe2a2SStefan Roese * example, in 'ubifs_rename()' we change 3 inodes simultaneously, and 9729eefe2a2SStefan Roese * write-back must not write any of them before we have finished. 9739eefe2a2SStefan Roese * 9749eefe2a2SStefan Roese * The second reason is budgeting - UBIFS has to budget all operations. If an 9759eefe2a2SStefan Roese * operation is going to mark an inode dirty, it has to allocate budget for 9769eefe2a2SStefan Roese * this. It cannot just mark it dirty because there is no guarantee there will 9779eefe2a2SStefan Roese * be enough flash space to write the inode back later. This means UBIFS has 9789eefe2a2SStefan Roese * to have full control over inode "clean <-> dirty" transitions (and pages 9799eefe2a2SStefan Roese * actually). But unfortunately, VFS marks inodes dirty in many places, and it 9809eefe2a2SStefan Roese * does not ask the file-system if it is allowed to do so (there is a notifier, 9819eefe2a2SStefan Roese * but it is not enough), i.e., there is no mechanism to synchronize with this. 9829eefe2a2SStefan Roese * So UBIFS has its own inode dirty flag and its own mutex to serialize 9839eefe2a2SStefan Roese * "clean <-> dirty" transitions. 9849eefe2a2SStefan Roese * 9859eefe2a2SStefan Roese * The @synced_i_size field is used to make sure we never write pages which are 9869eefe2a2SStefan Roese * beyond last synchronized inode size. See 'ubifs_writepage()' for more 9879eefe2a2SStefan Roese * information. 9889eefe2a2SStefan Roese * 9899eefe2a2SStefan Roese * The @ui_size is a "shadow" variable for @inode->i_size and UBIFS uses 9909eefe2a2SStefan Roese * @ui_size instead of @inode->i_size. The reason for this is that UBIFS cannot 9919eefe2a2SStefan Roese * make sure @inode->i_size is always changed under @ui_mutex, because it 992ff94bc40SHeiko Schocher * cannot call 'truncate_setsize()' with @ui_mutex locked, because it would 993ff94bc40SHeiko Schocher * deadlock with 'ubifs_writepage()' (see file.c). All the other inode fields 994ff94bc40SHeiko Schocher * are changed under @ui_mutex, so they do not need "shadow" fields. Note, one 9959eefe2a2SStefan Roese * could consider to rework locking and base it on "shadow" fields. 9969eefe2a2SStefan Roese */ 9979eefe2a2SStefan Roese struct ubifs_inode { 9989eefe2a2SStefan Roese struct inode vfs_inode; 9999eefe2a2SStefan Roese unsigned long long creat_sqnum; 10009eefe2a2SStefan Roese unsigned long long del_cmtno; 10019eefe2a2SStefan Roese unsigned int xattr_size; 10029eefe2a2SStefan Roese unsigned int xattr_cnt; 10039eefe2a2SStefan Roese unsigned int xattr_names; 10049eefe2a2SStefan Roese unsigned int dirty:1; 10059eefe2a2SStefan Roese unsigned int xattr:1; 10069eefe2a2SStefan Roese unsigned int bulk_read:1; 10079eefe2a2SStefan Roese unsigned int compr_type:2; 10089eefe2a2SStefan Roese struct mutex ui_mutex; 10099eefe2a2SStefan Roese spinlock_t ui_lock; 10109eefe2a2SStefan Roese loff_t synced_i_size; 10119eefe2a2SStefan Roese loff_t ui_size; 10129eefe2a2SStefan Roese int flags; 10139eefe2a2SStefan Roese pgoff_t last_page_read; 10149eefe2a2SStefan Roese pgoff_t read_in_a_row; 10159eefe2a2SStefan Roese int data_len; 10169eefe2a2SStefan Roese void *data; 10179eefe2a2SStefan Roese }; 10189eefe2a2SStefan Roese 10199eefe2a2SStefan Roese /** 10209eefe2a2SStefan Roese * struct ubifs_unclean_leb - records a LEB recovered under read-only mode. 10219eefe2a2SStefan Roese * @list: list 10229eefe2a2SStefan Roese * @lnum: LEB number of recovered LEB 10239eefe2a2SStefan Roese * @endpt: offset where recovery ended 10249eefe2a2SStefan Roese * 10259eefe2a2SStefan Roese * This structure records a LEB identified during recovery that needs to be 10269eefe2a2SStefan Roese * cleaned but was not because UBIFS was mounted read-only. The information 10279eefe2a2SStefan Roese * is used to clean the LEB when remounting to read-write mode. 10289eefe2a2SStefan Roese */ 10299eefe2a2SStefan Roese struct ubifs_unclean_leb { 10309eefe2a2SStefan Roese struct list_head list; 10319eefe2a2SStefan Roese int lnum; 10329eefe2a2SStefan Roese int endpt; 10339eefe2a2SStefan Roese }; 10349eefe2a2SStefan Roese 10359eefe2a2SStefan Roese /* 10369eefe2a2SStefan Roese * LEB properties flags. 10379eefe2a2SStefan Roese * 10389eefe2a2SStefan Roese * LPROPS_UNCAT: not categorized 10399eefe2a2SStefan Roese * LPROPS_DIRTY: dirty > free, dirty >= @c->dead_wm, not index 10409eefe2a2SStefan Roese * LPROPS_DIRTY_IDX: dirty + free > @c->min_idx_node_sze and index 10419eefe2a2SStefan Roese * LPROPS_FREE: free > 0, dirty < @c->dead_wm, not empty, not index 10429eefe2a2SStefan Roese * LPROPS_HEAP_CNT: number of heaps used for storing categorized LEBs 10439eefe2a2SStefan Roese * LPROPS_EMPTY: LEB is empty, not taken 10449eefe2a2SStefan Roese * LPROPS_FREEABLE: free + dirty == leb_size, not index, not taken 10459eefe2a2SStefan Roese * LPROPS_FRDI_IDX: free + dirty == leb_size and index, may be taken 10469eefe2a2SStefan Roese * LPROPS_CAT_MASK: mask for the LEB categories above 10479eefe2a2SStefan Roese * LPROPS_TAKEN: LEB was taken (this flag is not saved on the media) 10489eefe2a2SStefan Roese * LPROPS_INDEX: LEB contains indexing nodes (this flag also exists on flash) 10499eefe2a2SStefan Roese */ 10509eefe2a2SStefan Roese enum { 10519eefe2a2SStefan Roese LPROPS_UNCAT = 0, 10529eefe2a2SStefan Roese LPROPS_DIRTY = 1, 10539eefe2a2SStefan Roese LPROPS_DIRTY_IDX = 2, 10549eefe2a2SStefan Roese LPROPS_FREE = 3, 10559eefe2a2SStefan Roese LPROPS_HEAP_CNT = 3, 10569eefe2a2SStefan Roese LPROPS_EMPTY = 4, 10579eefe2a2SStefan Roese LPROPS_FREEABLE = 5, 10589eefe2a2SStefan Roese LPROPS_FRDI_IDX = 6, 10599eefe2a2SStefan Roese LPROPS_CAT_MASK = 15, 10609eefe2a2SStefan Roese LPROPS_TAKEN = 16, 10619eefe2a2SStefan Roese LPROPS_INDEX = 32, 10629eefe2a2SStefan Roese }; 10639eefe2a2SStefan Roese 10649eefe2a2SStefan Roese /** 10659eefe2a2SStefan Roese * struct ubifs_lprops - logical eraseblock properties. 10669eefe2a2SStefan Roese * @free: amount of free space in bytes 10679eefe2a2SStefan Roese * @dirty: amount of dirty space in bytes 10689eefe2a2SStefan Roese * @flags: LEB properties flags (see above) 10699eefe2a2SStefan Roese * @lnum: LEB number 10709eefe2a2SStefan Roese * @list: list of same-category lprops (for LPROPS_EMPTY and LPROPS_FREEABLE) 10719eefe2a2SStefan Roese * @hpos: heap position in heap of same-category lprops (other categories) 10729eefe2a2SStefan Roese */ 10739eefe2a2SStefan Roese struct ubifs_lprops { 10749eefe2a2SStefan Roese int free; 10759eefe2a2SStefan Roese int dirty; 10769eefe2a2SStefan Roese int flags; 10779eefe2a2SStefan Roese int lnum; 10789eefe2a2SStefan Roese union { 10799eefe2a2SStefan Roese struct list_head list; 10809eefe2a2SStefan Roese int hpos; 10819eefe2a2SStefan Roese }; 10829eefe2a2SStefan Roese }; 10839eefe2a2SStefan Roese 10849eefe2a2SStefan Roese /** 10859eefe2a2SStefan Roese * struct ubifs_lpt_lprops - LPT logical eraseblock properties. 10869eefe2a2SStefan Roese * @free: amount of free space in bytes 10879eefe2a2SStefan Roese * @dirty: amount of dirty space in bytes 10889eefe2a2SStefan Roese * @tgc: trivial GC flag (1 => unmap after commit end) 10899eefe2a2SStefan Roese * @cmt: commit flag (1 => reserved for commit) 10909eefe2a2SStefan Roese */ 10919eefe2a2SStefan Roese struct ubifs_lpt_lprops { 10929eefe2a2SStefan Roese int free; 10939eefe2a2SStefan Roese int dirty; 10949eefe2a2SStefan Roese unsigned tgc:1; 10959eefe2a2SStefan Roese unsigned cmt:1; 10969eefe2a2SStefan Roese }; 10979eefe2a2SStefan Roese 10989eefe2a2SStefan Roese /** 10999eefe2a2SStefan Roese * struct ubifs_lp_stats - statistics of eraseblocks in the main area. 11009eefe2a2SStefan Roese * @empty_lebs: number of empty LEBs 11019eefe2a2SStefan Roese * @taken_empty_lebs: number of taken LEBs 11029eefe2a2SStefan Roese * @idx_lebs: number of indexing LEBs 11039eefe2a2SStefan Roese * @total_free: total free space in bytes (includes all LEBs) 11049eefe2a2SStefan Roese * @total_dirty: total dirty space in bytes (includes all LEBs) 11059eefe2a2SStefan Roese * @total_used: total used space in bytes (does not include index LEBs) 11069eefe2a2SStefan Roese * @total_dead: total dead space in bytes (does not include index LEBs) 11079eefe2a2SStefan Roese * @total_dark: total dark space in bytes (does not include index LEBs) 11089eefe2a2SStefan Roese * 11099eefe2a2SStefan Roese * The @taken_empty_lebs field counts the LEBs that are in the transient state 11109eefe2a2SStefan Roese * of having been "taken" for use but not yet written to. @taken_empty_lebs is 11119eefe2a2SStefan Roese * needed to account correctly for @gc_lnum, otherwise @empty_lebs could be 11129eefe2a2SStefan Roese * used by itself (in which case 'unused_lebs' would be a better name). In the 11139eefe2a2SStefan Roese * case of @gc_lnum, it is "taken" at mount time or whenever a LEB is retained 11149eefe2a2SStefan Roese * by GC, but unlike other empty LEBs that are "taken", it may not be written 11159eefe2a2SStefan Roese * straight away (i.e. before the next commit start or unmount), so either 11169eefe2a2SStefan Roese * @gc_lnum must be specially accounted for, or the current approach followed 11179eefe2a2SStefan Roese * i.e. count it under @taken_empty_lebs. 11189eefe2a2SStefan Roese * 11199eefe2a2SStefan Roese * @empty_lebs includes @taken_empty_lebs. 11209eefe2a2SStefan Roese * 11219eefe2a2SStefan Roese * @total_used, @total_dead and @total_dark fields do not account indexing 11229eefe2a2SStefan Roese * LEBs. 11239eefe2a2SStefan Roese */ 11249eefe2a2SStefan Roese struct ubifs_lp_stats { 11259eefe2a2SStefan Roese int empty_lebs; 11269eefe2a2SStefan Roese int taken_empty_lebs; 11279eefe2a2SStefan Roese int idx_lebs; 11289eefe2a2SStefan Roese long long total_free; 11299eefe2a2SStefan Roese long long total_dirty; 11309eefe2a2SStefan Roese long long total_used; 11319eefe2a2SStefan Roese long long total_dead; 11329eefe2a2SStefan Roese long long total_dark; 11339eefe2a2SStefan Roese }; 11349eefe2a2SStefan Roese 11359eefe2a2SStefan Roese struct ubifs_nnode; 11369eefe2a2SStefan Roese 11379eefe2a2SStefan Roese /** 11389eefe2a2SStefan Roese * struct ubifs_cnode - LEB Properties Tree common node. 11399eefe2a2SStefan Roese * @parent: parent nnode 11409eefe2a2SStefan Roese * @cnext: next cnode to commit 11419eefe2a2SStefan Roese * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE) 11429eefe2a2SStefan Roese * @iip: index in parent 11439eefe2a2SStefan Roese * @level: level in the tree (zero for pnodes, greater than zero for nnodes) 11449eefe2a2SStefan Roese * @num: node number 11459eefe2a2SStefan Roese */ 11469eefe2a2SStefan Roese struct ubifs_cnode { 11479eefe2a2SStefan Roese struct ubifs_nnode *parent; 11489eefe2a2SStefan Roese struct ubifs_cnode *cnext; 11499eefe2a2SStefan Roese unsigned long flags; 11509eefe2a2SStefan Roese int iip; 11519eefe2a2SStefan Roese int level; 11529eefe2a2SStefan Roese int num; 11539eefe2a2SStefan Roese }; 11549eefe2a2SStefan Roese 11559eefe2a2SStefan Roese /** 11569eefe2a2SStefan Roese * struct ubifs_pnode - LEB Properties Tree leaf node. 11579eefe2a2SStefan Roese * @parent: parent nnode 11589eefe2a2SStefan Roese * @cnext: next cnode to commit 11599eefe2a2SStefan Roese * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE) 11609eefe2a2SStefan Roese * @iip: index in parent 11619eefe2a2SStefan Roese * @level: level in the tree (always zero for pnodes) 11629eefe2a2SStefan Roese * @num: node number 11639eefe2a2SStefan Roese * @lprops: LEB properties array 11649eefe2a2SStefan Roese */ 11659eefe2a2SStefan Roese struct ubifs_pnode { 11669eefe2a2SStefan Roese struct ubifs_nnode *parent; 11679eefe2a2SStefan Roese struct ubifs_cnode *cnext; 11689eefe2a2SStefan Roese unsigned long flags; 11699eefe2a2SStefan Roese int iip; 11709eefe2a2SStefan Roese int level; 11719eefe2a2SStefan Roese int num; 11729eefe2a2SStefan Roese struct ubifs_lprops lprops[UBIFS_LPT_FANOUT]; 11739eefe2a2SStefan Roese }; 11749eefe2a2SStefan Roese 11759eefe2a2SStefan Roese /** 11769eefe2a2SStefan Roese * struct ubifs_nbranch - LEB Properties Tree internal node branch. 11779eefe2a2SStefan Roese * @lnum: LEB number of child 11789eefe2a2SStefan Roese * @offs: offset of child 11799eefe2a2SStefan Roese * @nnode: nnode child 11809eefe2a2SStefan Roese * @pnode: pnode child 11819eefe2a2SStefan Roese * @cnode: cnode child 11829eefe2a2SStefan Roese */ 11839eefe2a2SStefan Roese struct ubifs_nbranch { 11849eefe2a2SStefan Roese int lnum; 11859eefe2a2SStefan Roese int offs; 11869eefe2a2SStefan Roese union { 11879eefe2a2SStefan Roese struct ubifs_nnode *nnode; 11889eefe2a2SStefan Roese struct ubifs_pnode *pnode; 11899eefe2a2SStefan Roese struct ubifs_cnode *cnode; 11909eefe2a2SStefan Roese }; 11919eefe2a2SStefan Roese }; 11929eefe2a2SStefan Roese 11939eefe2a2SStefan Roese /** 11949eefe2a2SStefan Roese * struct ubifs_nnode - LEB Properties Tree internal node. 11959eefe2a2SStefan Roese * @parent: parent nnode 11969eefe2a2SStefan Roese * @cnext: next cnode to commit 11979eefe2a2SStefan Roese * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE) 11989eefe2a2SStefan Roese * @iip: index in parent 11999eefe2a2SStefan Roese * @level: level in the tree (always greater than zero for nnodes) 12009eefe2a2SStefan Roese * @num: node number 12019eefe2a2SStefan Roese * @nbranch: branches to child nodes 12029eefe2a2SStefan Roese */ 12039eefe2a2SStefan Roese struct ubifs_nnode { 12049eefe2a2SStefan Roese struct ubifs_nnode *parent; 12059eefe2a2SStefan Roese struct ubifs_cnode *cnext; 12069eefe2a2SStefan Roese unsigned long flags; 12079eefe2a2SStefan Roese int iip; 12089eefe2a2SStefan Roese int level; 12099eefe2a2SStefan Roese int num; 12109eefe2a2SStefan Roese struct ubifs_nbranch nbranch[UBIFS_LPT_FANOUT]; 12119eefe2a2SStefan Roese }; 12129eefe2a2SStefan Roese 12139eefe2a2SStefan Roese /** 12149eefe2a2SStefan Roese * struct ubifs_lpt_heap - heap of categorized lprops. 12159eefe2a2SStefan Roese * @arr: heap array 12169eefe2a2SStefan Roese * @cnt: number in heap 12179eefe2a2SStefan Roese * @max_cnt: maximum number allowed in heap 12189eefe2a2SStefan Roese * 12199eefe2a2SStefan Roese * There are %LPROPS_HEAP_CNT heaps. 12209eefe2a2SStefan Roese */ 12219eefe2a2SStefan Roese struct ubifs_lpt_heap { 12229eefe2a2SStefan Roese struct ubifs_lprops **arr; 12239eefe2a2SStefan Roese int cnt; 12249eefe2a2SStefan Roese int max_cnt; 12259eefe2a2SStefan Roese }; 12269eefe2a2SStefan Roese 12279eefe2a2SStefan Roese /* 12289eefe2a2SStefan Roese * Return codes for LPT scan callback function. 12299eefe2a2SStefan Roese * 12309eefe2a2SStefan Roese * LPT_SCAN_CONTINUE: continue scanning 12319eefe2a2SStefan Roese * LPT_SCAN_ADD: add the LEB properties scanned to the tree in memory 12329eefe2a2SStefan Roese * LPT_SCAN_STOP: stop scanning 12339eefe2a2SStefan Roese */ 12349eefe2a2SStefan Roese enum { 12359eefe2a2SStefan Roese LPT_SCAN_CONTINUE = 0, 12369eefe2a2SStefan Roese LPT_SCAN_ADD = 1, 12379eefe2a2SStefan Roese LPT_SCAN_STOP = 2, 12389eefe2a2SStefan Roese }; 12399eefe2a2SStefan Roese 12409eefe2a2SStefan Roese struct ubifs_info; 12419eefe2a2SStefan Roese 12429eefe2a2SStefan Roese /* Callback used by the 'ubifs_lpt_scan_nolock()' function */ 12439eefe2a2SStefan Roese typedef int (*ubifs_lpt_scan_callback)(struct ubifs_info *c, 12449eefe2a2SStefan Roese const struct ubifs_lprops *lprops, 12459eefe2a2SStefan Roese int in_tree, void *data); 12469eefe2a2SStefan Roese 12479eefe2a2SStefan Roese /** 12489eefe2a2SStefan Roese * struct ubifs_wbuf - UBIFS write-buffer. 12499eefe2a2SStefan Roese * @c: UBIFS file-system description object 12509eefe2a2SStefan Roese * @buf: write-buffer (of min. flash I/O unit size) 12519eefe2a2SStefan Roese * @lnum: logical eraseblock number the write-buffer points to 12529eefe2a2SStefan Roese * @offs: write-buffer offset in this logical eraseblock 12539eefe2a2SStefan Roese * @avail: number of bytes available in the write-buffer 12549eefe2a2SStefan Roese * @used: number of used bytes in the write-buffer 1255ff94bc40SHeiko Schocher * @size: write-buffer size (in [@c->min_io_size, @c->max_write_size] range) 12569eefe2a2SStefan Roese * @jhead: journal head the mutex belongs to (note, needed only to shut lockdep 12579eefe2a2SStefan Roese * up by 'mutex_lock_nested()). 12589eefe2a2SStefan Roese * @sync_callback: write-buffer synchronization callback 12599eefe2a2SStefan Roese * @io_mutex: serializes write-buffer I/O 12609eefe2a2SStefan Roese * @lock: serializes @buf, @lnum, @offs, @avail, @used, @next_ino and @inodes 12619eefe2a2SStefan Roese * fields 1262ff94bc40SHeiko Schocher * @softlimit: soft write-buffer timeout interval 12630195a7bbSHeiko Schocher * @delta: hard and soft timeouts delta (the timer expire interval is @softlimit 1264ff94bc40SHeiko Schocher * and @softlimit + @delta) 12659eefe2a2SStefan Roese * @timer: write-buffer timer 1266ff94bc40SHeiko Schocher * @no_timer: non-zero if this write-buffer does not have a timer 1267ff94bc40SHeiko Schocher * @need_sync: non-zero if the timer expired and the wbuf needs sync'ing 12689eefe2a2SStefan Roese * @next_ino: points to the next position of the following inode number 12699eefe2a2SStefan Roese * @inodes: stores the inode numbers of the nodes which are in wbuf 12709eefe2a2SStefan Roese * 12719eefe2a2SStefan Roese * The write-buffer synchronization callback is called when the write-buffer is 12729eefe2a2SStefan Roese * synchronized in order to notify how much space was wasted due to 12739eefe2a2SStefan Roese * write-buffer padding and how much free space is left in the LEB. 12749eefe2a2SStefan Roese * 12759eefe2a2SStefan Roese * Note: the fields @buf, @lnum, @offs, @avail and @used can be read under 12769eefe2a2SStefan Roese * spin-lock or mutex because they are written under both mutex and spin-lock. 12779eefe2a2SStefan Roese * @buf is appended to under mutex but overwritten under both mutex and 12789eefe2a2SStefan Roese * spin-lock. Thus the data between @buf and @buf + @used can be read under 12799eefe2a2SStefan Roese * spinlock. 12809eefe2a2SStefan Roese */ 12819eefe2a2SStefan Roese struct ubifs_wbuf { 12829eefe2a2SStefan Roese struct ubifs_info *c; 12839eefe2a2SStefan Roese void *buf; 12849eefe2a2SStefan Roese int lnum; 12859eefe2a2SStefan Roese int offs; 12869eefe2a2SStefan Roese int avail; 12879eefe2a2SStefan Roese int used; 1288ff94bc40SHeiko Schocher int size; 12899eefe2a2SStefan Roese int jhead; 12909eefe2a2SStefan Roese int (*sync_callback)(struct ubifs_info *c, int lnum, int free, int pad); 12919eefe2a2SStefan Roese struct mutex io_mutex; 12929eefe2a2SStefan Roese spinlock_t lock; 1293ff94bc40SHeiko Schocher // ktime_t softlimit; 1294ff94bc40SHeiko Schocher // unsigned long long delta; 1295ff94bc40SHeiko Schocher // struct hrtimer timer; 1296ff94bc40SHeiko Schocher unsigned int no_timer:1; 1297ff94bc40SHeiko Schocher unsigned int need_sync:1; 12989eefe2a2SStefan Roese int next_ino; 12999eefe2a2SStefan Roese ino_t *inodes; 13009eefe2a2SStefan Roese }; 13019eefe2a2SStefan Roese 13029eefe2a2SStefan Roese /** 13039eefe2a2SStefan Roese * struct ubifs_bud - bud logical eraseblock. 13049eefe2a2SStefan Roese * @lnum: logical eraseblock number 13059eefe2a2SStefan Roese * @start: where the (uncommitted) bud data starts 13069eefe2a2SStefan Roese * @jhead: journal head number this bud belongs to 13079eefe2a2SStefan Roese * @list: link in the list buds belonging to the same journal head 13089eefe2a2SStefan Roese * @rb: link in the tree of all buds 13099eefe2a2SStefan Roese */ 13109eefe2a2SStefan Roese struct ubifs_bud { 13119eefe2a2SStefan Roese int lnum; 13129eefe2a2SStefan Roese int start; 13139eefe2a2SStefan Roese int jhead; 13149eefe2a2SStefan Roese struct list_head list; 13159eefe2a2SStefan Roese struct rb_node rb; 13169eefe2a2SStefan Roese }; 13179eefe2a2SStefan Roese 13189eefe2a2SStefan Roese /** 13199eefe2a2SStefan Roese * struct ubifs_jhead - journal head. 13209eefe2a2SStefan Roese * @wbuf: head's write-buffer 13219eefe2a2SStefan Roese * @buds_list: list of bud LEBs belonging to this journal head 1322ff94bc40SHeiko Schocher * @grouped: non-zero if UBIFS groups nodes when writing to this journal head 13239eefe2a2SStefan Roese * 13249eefe2a2SStefan Roese * Note, the @buds list is protected by the @c->buds_lock. 13259eefe2a2SStefan Roese */ 13269eefe2a2SStefan Roese struct ubifs_jhead { 13279eefe2a2SStefan Roese struct ubifs_wbuf wbuf; 13289eefe2a2SStefan Roese struct list_head buds_list; 1329ff94bc40SHeiko Schocher unsigned int grouped:1; 13309eefe2a2SStefan Roese }; 13319eefe2a2SStefan Roese 13329eefe2a2SStefan Roese /** 13339eefe2a2SStefan Roese * struct ubifs_zbranch - key/coordinate/length branch stored in znodes. 13349eefe2a2SStefan Roese * @key: key 13359eefe2a2SStefan Roese * @znode: znode address in memory 13369eefe2a2SStefan Roese * @lnum: LEB number of the target node (indexing node or data node) 13379eefe2a2SStefan Roese * @offs: target node offset within @lnum 13389eefe2a2SStefan Roese * @len: target node length 13399eefe2a2SStefan Roese */ 13409eefe2a2SStefan Roese struct ubifs_zbranch { 13419eefe2a2SStefan Roese union ubifs_key key; 13429eefe2a2SStefan Roese union { 13439eefe2a2SStefan Roese struct ubifs_znode *znode; 13449eefe2a2SStefan Roese void *leaf; 13459eefe2a2SStefan Roese }; 13469eefe2a2SStefan Roese int lnum; 13479eefe2a2SStefan Roese int offs; 13489eefe2a2SStefan Roese int len; 13499eefe2a2SStefan Roese }; 13509eefe2a2SStefan Roese 13519eefe2a2SStefan Roese /** 13529eefe2a2SStefan Roese * struct ubifs_znode - in-memory representation of an indexing node. 13539eefe2a2SStefan Roese * @parent: parent znode or NULL if it is the root 13549eefe2a2SStefan Roese * @cnext: next znode to commit 13559eefe2a2SStefan Roese * @flags: znode flags (%DIRTY_ZNODE, %COW_ZNODE or %OBSOLETE_ZNODE) 13569eefe2a2SStefan Roese * @time: last access time (seconds) 13579eefe2a2SStefan Roese * @level: level of the entry in the TNC tree 13589eefe2a2SStefan Roese * @child_cnt: count of child znodes 13599eefe2a2SStefan Roese * @iip: index in parent's zbranch array 13609eefe2a2SStefan Roese * @alt: lower bound of key range has altered i.e. child inserted at slot 0 13619eefe2a2SStefan Roese * @lnum: LEB number of the corresponding indexing node 13629eefe2a2SStefan Roese * @offs: offset of the corresponding indexing node 13639eefe2a2SStefan Roese * @len: length of the corresponding indexing node 13649eefe2a2SStefan Roese * @zbranch: array of znode branches (@c->fanout elements) 1365ff94bc40SHeiko Schocher * 1366ff94bc40SHeiko Schocher * Note! The @lnum, @offs, and @len fields are not really needed - we have them 1367ff94bc40SHeiko Schocher * only for internal consistency check. They could be removed to save some RAM. 13689eefe2a2SStefan Roese */ 13699eefe2a2SStefan Roese struct ubifs_znode { 13709eefe2a2SStefan Roese struct ubifs_znode *parent; 13719eefe2a2SStefan Roese struct ubifs_znode *cnext; 13729eefe2a2SStefan Roese unsigned long flags; 13739eefe2a2SStefan Roese unsigned long time; 13749eefe2a2SStefan Roese int level; 13759eefe2a2SStefan Roese int child_cnt; 13769eefe2a2SStefan Roese int iip; 13779eefe2a2SStefan Roese int alt; 1378ff94bc40SHeiko Schocher int lnum; 1379ff94bc40SHeiko Schocher int offs; 1380ff94bc40SHeiko Schocher int len; 13819eefe2a2SStefan Roese struct ubifs_zbranch zbranch[]; 13829eefe2a2SStefan Roese }; 13839eefe2a2SStefan Roese 13849eefe2a2SStefan Roese /** 13859eefe2a2SStefan Roese * struct bu_info - bulk-read information. 13869eefe2a2SStefan Roese * @key: first data node key 13879eefe2a2SStefan Roese * @zbranch: zbranches of data nodes to bulk read 13889eefe2a2SStefan Roese * @buf: buffer to read into 13899eefe2a2SStefan Roese * @buf_len: buffer length 13909eefe2a2SStefan Roese * @gc_seq: GC sequence number to detect races with GC 13919eefe2a2SStefan Roese * @cnt: number of data nodes for bulk read 13929eefe2a2SStefan Roese * @blk_cnt: number of data blocks including holes 13939eefe2a2SStefan Roese * @oef: end of file reached 13949eefe2a2SStefan Roese */ 13959eefe2a2SStefan Roese struct bu_info { 13969eefe2a2SStefan Roese union ubifs_key key; 13979eefe2a2SStefan Roese struct ubifs_zbranch zbranch[UBIFS_MAX_BULK_READ]; 13989eefe2a2SStefan Roese void *buf; 13999eefe2a2SStefan Roese int buf_len; 14009eefe2a2SStefan Roese int gc_seq; 14019eefe2a2SStefan Roese int cnt; 14029eefe2a2SStefan Roese int blk_cnt; 14039eefe2a2SStefan Roese int eof; 14049eefe2a2SStefan Roese }; 14059eefe2a2SStefan Roese 14069eefe2a2SStefan Roese /** 14079eefe2a2SStefan Roese * struct ubifs_node_range - node length range description data structure. 14089eefe2a2SStefan Roese * @len: fixed node length 14099eefe2a2SStefan Roese * @min_len: minimum possible node length 14109eefe2a2SStefan Roese * @max_len: maximum possible node length 14119eefe2a2SStefan Roese * 14129eefe2a2SStefan Roese * If @max_len is %0, the node has fixed length @len. 14139eefe2a2SStefan Roese */ 14149eefe2a2SStefan Roese struct ubifs_node_range { 14159eefe2a2SStefan Roese union { 14169eefe2a2SStefan Roese int len; 14179eefe2a2SStefan Roese int min_len; 14189eefe2a2SStefan Roese }; 14199eefe2a2SStefan Roese int max_len; 14209eefe2a2SStefan Roese }; 14219eefe2a2SStefan Roese 14229eefe2a2SStefan Roese /** 14239eefe2a2SStefan Roese * struct ubifs_compressor - UBIFS compressor description structure. 14249eefe2a2SStefan Roese * @compr_type: compressor type (%UBIFS_COMPR_LZO, etc) 14259eefe2a2SStefan Roese * @cc: cryptoapi compressor handle 14269eefe2a2SStefan Roese * @comp_mutex: mutex used during compression 14279eefe2a2SStefan Roese * @decomp_mutex: mutex used during decompression 14289eefe2a2SStefan Roese * @name: compressor name 14299eefe2a2SStefan Roese * @capi_name: cryptoapi compressor name 14309eefe2a2SStefan Roese */ 14319eefe2a2SStefan Roese struct ubifs_compressor { 14329eefe2a2SStefan Roese int compr_type; 1433ff94bc40SHeiko Schocher struct crypto_comp *cc; 1434ff94bc40SHeiko Schocher struct mutex *comp_mutex; 1435ff94bc40SHeiko Schocher struct mutex *decomp_mutex; 1436ff94bc40SHeiko Schocher const char *name; 1437ff94bc40SHeiko Schocher const char *capi_name; 1438ff94bc40SHeiko Schocher #ifdef __UBOOT__ 14399eefe2a2SStefan Roese int (*decompress)(const unsigned char *in, size_t in_len, 14409eefe2a2SStefan Roese unsigned char *out, size_t *out_len); 1441ff94bc40SHeiko Schocher #endif 14429eefe2a2SStefan Roese }; 14439eefe2a2SStefan Roese 14449eefe2a2SStefan Roese /** 14459eefe2a2SStefan Roese * struct ubifs_budget_req - budget requirements of an operation. 14469eefe2a2SStefan Roese * 14479eefe2a2SStefan Roese * @fast: non-zero if the budgeting should try to acquire budget quickly and 14489eefe2a2SStefan Roese * should not try to call write-back 14499eefe2a2SStefan Roese * @recalculate: non-zero if @idx_growth, @data_growth, and @dd_growth fields 14509eefe2a2SStefan Roese * have to be re-calculated 14519eefe2a2SStefan Roese * @new_page: non-zero if the operation adds a new page 14529eefe2a2SStefan Roese * @dirtied_page: non-zero if the operation makes a page dirty 14539eefe2a2SStefan Roese * @new_dent: non-zero if the operation adds a new directory entry 14549eefe2a2SStefan Roese * @mod_dent: non-zero if the operation removes or modifies an existing 14559eefe2a2SStefan Roese * directory entry 14569eefe2a2SStefan Roese * @new_ino: non-zero if the operation adds a new inode 14579eefe2a2SStefan Roese * @new_ino_d: now much data newly created inode contains 14589eefe2a2SStefan Roese * @dirtied_ino: how many inodes the operation makes dirty 14599eefe2a2SStefan Roese * @dirtied_ino_d: now much data dirtied inode contains 14609eefe2a2SStefan Roese * @idx_growth: how much the index will supposedly grow 14619eefe2a2SStefan Roese * @data_growth: how much new data the operation will supposedly add 14629eefe2a2SStefan Roese * @dd_growth: how much data that makes other data dirty the operation will 14639eefe2a2SStefan Roese * supposedly add 14649eefe2a2SStefan Roese * 14659eefe2a2SStefan Roese * @idx_growth, @data_growth and @dd_growth are not used in budget request. The 14669eefe2a2SStefan Roese * budgeting subsystem caches index and data growth values there to avoid 14679eefe2a2SStefan Roese * re-calculating them when the budget is released. However, if @idx_growth is 14689eefe2a2SStefan Roese * %-1, it is calculated by the release function using other fields. 14699eefe2a2SStefan Roese * 14709eefe2a2SStefan Roese * An inode may contain 4KiB of data at max., thus the widths of @new_ino_d 14719eefe2a2SStefan Roese * is 13 bits, and @dirtied_ino_d - 15, because up to 4 inodes may be made 14729eefe2a2SStefan Roese * dirty by the re-name operation. 14739eefe2a2SStefan Roese * 14749eefe2a2SStefan Roese * Note, UBIFS aligns node lengths to 8-bytes boundary, so the requester has to 14759eefe2a2SStefan Roese * make sure the amount of inode data which contribute to @new_ino_d and 14769eefe2a2SStefan Roese * @dirtied_ino_d fields are aligned. 14779eefe2a2SStefan Roese */ 14789eefe2a2SStefan Roese struct ubifs_budget_req { 14799eefe2a2SStefan Roese unsigned int fast:1; 14809eefe2a2SStefan Roese unsigned int recalculate:1; 14819eefe2a2SStefan Roese #ifndef UBIFS_DEBUG 14829eefe2a2SStefan Roese unsigned int new_page:1; 14839eefe2a2SStefan Roese unsigned int dirtied_page:1; 14849eefe2a2SStefan Roese unsigned int new_dent:1; 14859eefe2a2SStefan Roese unsigned int mod_dent:1; 14869eefe2a2SStefan Roese unsigned int new_ino:1; 14879eefe2a2SStefan Roese unsigned int new_ino_d:13; 14889eefe2a2SStefan Roese unsigned int dirtied_ino:4; 14899eefe2a2SStefan Roese unsigned int dirtied_ino_d:15; 14909eefe2a2SStefan Roese #else 14919eefe2a2SStefan Roese /* Not bit-fields to check for overflows */ 14929eefe2a2SStefan Roese unsigned int new_page; 14939eefe2a2SStefan Roese unsigned int dirtied_page; 14949eefe2a2SStefan Roese unsigned int new_dent; 14959eefe2a2SStefan Roese unsigned int mod_dent; 14969eefe2a2SStefan Roese unsigned int new_ino; 14979eefe2a2SStefan Roese unsigned int new_ino_d; 14989eefe2a2SStefan Roese unsigned int dirtied_ino; 14999eefe2a2SStefan Roese unsigned int dirtied_ino_d; 15009eefe2a2SStefan Roese #endif 15019eefe2a2SStefan Roese int idx_growth; 15029eefe2a2SStefan Roese int data_growth; 15039eefe2a2SStefan Roese int dd_growth; 15049eefe2a2SStefan Roese }; 15059eefe2a2SStefan Roese 15069eefe2a2SStefan Roese /** 15079eefe2a2SStefan Roese * struct ubifs_orphan - stores the inode number of an orphan. 15089eefe2a2SStefan Roese * @rb: rb-tree node of rb-tree of orphans sorted by inode number 15099eefe2a2SStefan Roese * @list: list head of list of orphans in order added 15109eefe2a2SStefan Roese * @new_list: list head of list of orphans added since the last commit 15119eefe2a2SStefan Roese * @cnext: next orphan to commit 15129eefe2a2SStefan Roese * @dnext: next orphan to delete 15139eefe2a2SStefan Roese * @inum: inode number 15149eefe2a2SStefan Roese * @new: %1 => added since the last commit, otherwise %0 1515ff94bc40SHeiko Schocher * @cmt: %1 => commit pending, otherwise %0 1516ff94bc40SHeiko Schocher * @del: %1 => delete pending, otherwise %0 15179eefe2a2SStefan Roese */ 15189eefe2a2SStefan Roese struct ubifs_orphan { 15199eefe2a2SStefan Roese struct rb_node rb; 15209eefe2a2SStefan Roese struct list_head list; 15219eefe2a2SStefan Roese struct list_head new_list; 15229eefe2a2SStefan Roese struct ubifs_orphan *cnext; 15239eefe2a2SStefan Roese struct ubifs_orphan *dnext; 15249eefe2a2SStefan Roese ino_t inum; 1525ff94bc40SHeiko Schocher unsigned new:1; 1526ff94bc40SHeiko Schocher unsigned cmt:1; 1527ff94bc40SHeiko Schocher unsigned del:1; 15289eefe2a2SStefan Roese }; 15299eefe2a2SStefan Roese 15309eefe2a2SStefan Roese /** 15319eefe2a2SStefan Roese * struct ubifs_mount_opts - UBIFS-specific mount options information. 15329eefe2a2SStefan Roese * @unmount_mode: selected unmount mode (%0 default, %1 normal, %2 fast) 15330195a7bbSHeiko Schocher * @bulk_read: enable/disable bulk-reads (%0 default, %1 disable, %2 enable) 15349eefe2a2SStefan Roese * @chk_data_crc: enable/disable CRC data checking when reading data nodes 15350195a7bbSHeiko Schocher * (%0 default, %1 disable, %2 enable) 15369eefe2a2SStefan Roese * @override_compr: override default compressor (%0 - do not override and use 15379eefe2a2SStefan Roese * superblock compressor, %1 - override and use compressor 15389eefe2a2SStefan Roese * specified in @compr_type) 15399eefe2a2SStefan Roese * @compr_type: compressor type to override the superblock compressor with 15409eefe2a2SStefan Roese * (%UBIFS_COMPR_NONE, etc) 15419eefe2a2SStefan Roese */ 15429eefe2a2SStefan Roese struct ubifs_mount_opts { 15439eefe2a2SStefan Roese unsigned int unmount_mode:2; 15449eefe2a2SStefan Roese unsigned int bulk_read:2; 15459eefe2a2SStefan Roese unsigned int chk_data_crc:2; 15469eefe2a2SStefan Roese unsigned int override_compr:1; 15479eefe2a2SStefan Roese unsigned int compr_type:2; 15489eefe2a2SStefan Roese }; 15499eefe2a2SStefan Roese 1550ff94bc40SHeiko Schocher /** 1551ff94bc40SHeiko Schocher * struct ubifs_budg_info - UBIFS budgeting information. 1552ff94bc40SHeiko Schocher * @idx_growth: amount of bytes budgeted for index growth 1553ff94bc40SHeiko Schocher * @data_growth: amount of bytes budgeted for cached data 1554ff94bc40SHeiko Schocher * @dd_growth: amount of bytes budgeted for cached data that will make 1555ff94bc40SHeiko Schocher * other data dirty 1556ff94bc40SHeiko Schocher * @uncommitted_idx: amount of bytes were budgeted for growth of the index, but 1557ff94bc40SHeiko Schocher * which still have to be taken into account because the index 1558ff94bc40SHeiko Schocher * has not been committed so far 1559ff94bc40SHeiko Schocher * @old_idx_sz: size of index on flash 1560ff94bc40SHeiko Schocher * @min_idx_lebs: minimum number of LEBs required for the index 1561ff94bc40SHeiko Schocher * @nospace: non-zero if the file-system does not have flash space (used as 1562ff94bc40SHeiko Schocher * optimization) 1563ff94bc40SHeiko Schocher * @nospace_rp: the same as @nospace, but additionally means that even reserved 1564ff94bc40SHeiko Schocher * pool is full 15650195a7bbSHeiko Schocher * @page_budget: budget for a page (constant, never changed after mount) 15660195a7bbSHeiko Schocher * @inode_budget: budget for an inode (constant, never changed after mount) 15670195a7bbSHeiko Schocher * @dent_budget: budget for a directory entry (constant, never changed after 1568ff94bc40SHeiko Schocher * mount) 1569ff94bc40SHeiko Schocher */ 1570ff94bc40SHeiko Schocher struct ubifs_budg_info { 1571ff94bc40SHeiko Schocher long long idx_growth; 1572ff94bc40SHeiko Schocher long long data_growth; 1573ff94bc40SHeiko Schocher long long dd_growth; 1574ff94bc40SHeiko Schocher long long uncommitted_idx; 1575ff94bc40SHeiko Schocher unsigned long long old_idx_sz; 1576ff94bc40SHeiko Schocher int min_idx_lebs; 1577ff94bc40SHeiko Schocher unsigned int nospace:1; 1578ff94bc40SHeiko Schocher unsigned int nospace_rp:1; 1579ff94bc40SHeiko Schocher int page_budget; 1580ff94bc40SHeiko Schocher int inode_budget; 1581ff94bc40SHeiko Schocher int dent_budget; 1582ff94bc40SHeiko Schocher }; 1583ff94bc40SHeiko Schocher 15849eefe2a2SStefan Roese struct ubifs_debug_info; 15859eefe2a2SStefan Roese 15869eefe2a2SStefan Roese /** 15879eefe2a2SStefan Roese * struct ubifs_info - UBIFS file-system description data structure 15889eefe2a2SStefan Roese * (per-superblock). 15899eefe2a2SStefan Roese * @vfs_sb: VFS @struct super_block object 15909eefe2a2SStefan Roese * @bdi: backing device info object to make VFS happy and disable read-ahead 15919eefe2a2SStefan Roese * 15929eefe2a2SStefan Roese * @highest_inum: highest used inode number 15939eefe2a2SStefan Roese * @max_sqnum: current global sequence number 15949eefe2a2SStefan Roese * @cmt_no: commit number of the last successfully completed commit, protected 15959eefe2a2SStefan Roese * by @commit_sem 15969eefe2a2SStefan Roese * @cnt_lock: protects @highest_inum and @max_sqnum counters 15979eefe2a2SStefan Roese * @fmt_version: UBIFS on-flash format version 1598febd7e41SArtem Bityutskiy * @ro_compat_version: R/O compatibility version 15999eefe2a2SStefan Roese * @uuid: UUID from super block 16009eefe2a2SStefan Roese * 16019eefe2a2SStefan Roese * @lhead_lnum: log head logical eraseblock number 16029eefe2a2SStefan Roese * @lhead_offs: log head offset 16039eefe2a2SStefan Roese * @ltail_lnum: log tail logical eraseblock number (offset is always 0) 16049eefe2a2SStefan Roese * @log_mutex: protects the log, @lhead_lnum, @lhead_offs, @ltail_lnum, and 16059eefe2a2SStefan Roese * @bud_bytes 16069eefe2a2SStefan Roese * @min_log_bytes: minimum required number of bytes in the log 16079eefe2a2SStefan Roese * @cmt_bud_bytes: used during commit to temporarily amount of bytes in 16089eefe2a2SStefan Roese * committed buds 16099eefe2a2SStefan Roese * 16109eefe2a2SStefan Roese * @buds: tree of all buds indexed by bud LEB number 16119eefe2a2SStefan Roese * @bud_bytes: how many bytes of flash is used by buds 16129eefe2a2SStefan Roese * @buds_lock: protects the @buds tree, @bud_bytes, and per-journal head bud 16139eefe2a2SStefan Roese * lists 16149eefe2a2SStefan Roese * @jhead_cnt: count of journal heads 16159eefe2a2SStefan Roese * @jheads: journal heads (head zero is base head) 16169eefe2a2SStefan Roese * @max_bud_bytes: maximum number of bytes allowed in buds 16179eefe2a2SStefan Roese * @bg_bud_bytes: number of bud bytes when background commit is initiated 16189eefe2a2SStefan Roese * @old_buds: buds to be released after commit ends 16199eefe2a2SStefan Roese * @max_bud_cnt: maximum number of buds 16209eefe2a2SStefan Roese * 16219eefe2a2SStefan Roese * @commit_sem: synchronizes committer with other processes 16229eefe2a2SStefan Roese * @cmt_state: commit state 16239eefe2a2SStefan Roese * @cs_lock: commit state lock 16249eefe2a2SStefan Roese * @cmt_wq: wait queue to sleep on if the log is full and a commit is running 16259eefe2a2SStefan Roese * 16269eefe2a2SStefan Roese * @big_lpt: flag that LPT is too big to write whole during commit 1627ff94bc40SHeiko Schocher * @space_fixup: flag indicating that free space in LEBs needs to be cleaned up 16289eefe2a2SStefan Roese * @no_chk_data_crc: do not check CRCs when reading data nodes (except during 16299eefe2a2SStefan Roese * recovery) 16309eefe2a2SStefan Roese * @bulk_read: enable bulk-reads 16319eefe2a2SStefan Roese * @default_compr: default compression algorithm (%UBIFS_COMPR_LZO, etc) 1632febd7e41SArtem Bityutskiy * @rw_incompat: the media is not R/W compatible 16339eefe2a2SStefan Roese * 16349eefe2a2SStefan Roese * @tnc_mutex: protects the Tree Node Cache (TNC), @zroot, @cnext, @enext, and 16359eefe2a2SStefan Roese * @calc_idx_sz 16369eefe2a2SStefan Roese * @zroot: zbranch which points to the root index node and znode 16379eefe2a2SStefan Roese * @cnext: next znode to commit 16389eefe2a2SStefan Roese * @enext: next znode to commit to empty space 16399eefe2a2SStefan Roese * @gap_lebs: array of LEBs used by the in-gaps commit method 16409eefe2a2SStefan Roese * @cbuf: commit buffer 16419eefe2a2SStefan Roese * @ileb_buf: buffer for commit in-the-gaps method 16429eefe2a2SStefan Roese * @ileb_len: length of data in ileb_buf 16439eefe2a2SStefan Roese * @ihead_lnum: LEB number of index head 16449eefe2a2SStefan Roese * @ihead_offs: offset of index head 16459eefe2a2SStefan Roese * @ilebs: pre-allocated index LEBs 16469eefe2a2SStefan Roese * @ileb_cnt: number of pre-allocated index LEBs 16479eefe2a2SStefan Roese * @ileb_nxt: next pre-allocated index LEBs 16489eefe2a2SStefan Roese * @old_idx: tree of index nodes obsoleted since the last commit start 16499eefe2a2SStefan Roese * @bottom_up_buf: a buffer which is used by 'dirty_cow_bottom_up()' in tnc.c 16509eefe2a2SStefan Roese * 16519eefe2a2SStefan Roese * @mst_node: master node 16529eefe2a2SStefan Roese * @mst_offs: offset of valid master node 16539eefe2a2SStefan Roese * 16549eefe2a2SStefan Roese * @max_bu_buf_len: maximum bulk-read buffer length 16559eefe2a2SStefan Roese * @bu_mutex: protects the pre-allocated bulk-read buffer and @c->bu 16569eefe2a2SStefan Roese * @bu: pre-allocated bulk-read information 16579eefe2a2SStefan Roese * 1658ff94bc40SHeiko Schocher * @write_reserve_mutex: protects @write_reserve_buf 1659ff94bc40SHeiko Schocher * @write_reserve_buf: on the write path we allocate memory, which might 1660ff94bc40SHeiko Schocher * sometimes be unavailable, in which case we use this 1661ff94bc40SHeiko Schocher * write reserve buffer 1662ff94bc40SHeiko Schocher * 16639eefe2a2SStefan Roese * @log_lebs: number of logical eraseblocks in the log 16649eefe2a2SStefan Roese * @log_bytes: log size in bytes 16659eefe2a2SStefan Roese * @log_last: last LEB of the log 16669eefe2a2SStefan Roese * @lpt_lebs: number of LEBs used for lprops table 16679eefe2a2SStefan Roese * @lpt_first: first LEB of the lprops table area 16689eefe2a2SStefan Roese * @lpt_last: last LEB of the lprops table area 16699eefe2a2SStefan Roese * @orph_lebs: number of LEBs used for the orphan area 16709eefe2a2SStefan Roese * @orph_first: first LEB of the orphan area 16719eefe2a2SStefan Roese * @orph_last: last LEB of the orphan area 16729eefe2a2SStefan Roese * @main_lebs: count of LEBs in the main area 16739eefe2a2SStefan Roese * @main_first: first LEB of the main area 16749eefe2a2SStefan Roese * @main_bytes: main area size in bytes 16759eefe2a2SStefan Roese * 16769eefe2a2SStefan Roese * @key_hash_type: type of the key hash 16779eefe2a2SStefan Roese * @key_hash: direntry key hash function 16789eefe2a2SStefan Roese * @key_fmt: key format 16799eefe2a2SStefan Roese * @key_len: key length 16809eefe2a2SStefan Roese * @fanout: fanout of the index tree (number of links per indexing node) 16819eefe2a2SStefan Roese * 16829eefe2a2SStefan Roese * @min_io_size: minimal input/output unit size 16839eefe2a2SStefan Roese * @min_io_shift: number of bits in @min_io_size minus one 1684ff94bc40SHeiko Schocher * @max_write_size: maximum amount of bytes the underlying flash can write at a 1685ff94bc40SHeiko Schocher * time (MTD write buffer size) 1686ff94bc40SHeiko Schocher * @max_write_shift: number of bits in @max_write_size minus one 16879eefe2a2SStefan Roese * @leb_size: logical eraseblock size in bytes 1688ff94bc40SHeiko Schocher * @leb_start: starting offset of logical eraseblocks within physical 1689ff94bc40SHeiko Schocher * eraseblocks 16909eefe2a2SStefan Roese * @half_leb_size: half LEB size 1691ff94bc40SHeiko Schocher * @idx_leb_size: how many bytes of an LEB are effectively available when it is 1692ff94bc40SHeiko Schocher * used to store indexing nodes (@leb_size - @max_idx_node_sz) 16939eefe2a2SStefan Roese * @leb_cnt: count of logical eraseblocks 16949eefe2a2SStefan Roese * @max_leb_cnt: maximum count of logical eraseblocks 16959eefe2a2SStefan Roese * @old_leb_cnt: count of logical eraseblocks before re-size 16969eefe2a2SStefan Roese * @ro_media: the underlying UBI volume is read-only 1697ff94bc40SHeiko Schocher * @ro_mount: the file-system was mounted as read-only 1698ff94bc40SHeiko Schocher * @ro_error: UBIFS switched to R/O mode because an error happened 16999eefe2a2SStefan Roese * 17009eefe2a2SStefan Roese * @dirty_pg_cnt: number of dirty pages (not used) 17019eefe2a2SStefan Roese * @dirty_zn_cnt: number of dirty znodes 17029eefe2a2SStefan Roese * @clean_zn_cnt: number of clean znodes 17039eefe2a2SStefan Roese * 1704ff94bc40SHeiko Schocher * @space_lock: protects @bi and @lst 1705ff94bc40SHeiko Schocher * @lst: lprops statistics 1706ff94bc40SHeiko Schocher * @bi: budgeting information 17079eefe2a2SStefan Roese * @calc_idx_sz: temporary variable which is used to calculate new index size 17089eefe2a2SStefan Roese * (contains accurate new index size at end of TNC commit start) 17099eefe2a2SStefan Roese * 17109eefe2a2SStefan Roese * @ref_node_alsz: size of the LEB reference node aligned to the min. flash 17119eefe2a2SStefan Roese * I/O unit 17129eefe2a2SStefan Roese * @mst_node_alsz: master node aligned size 17139eefe2a2SStefan Roese * @min_idx_node_sz: minimum indexing node aligned on 8-bytes boundary 17149eefe2a2SStefan Roese * @max_idx_node_sz: maximum indexing node aligned on 8-bytes boundary 17159eefe2a2SStefan Roese * @max_inode_sz: maximum possible inode size in bytes 17169eefe2a2SStefan Roese * @max_znode_sz: size of znode in bytes 17179eefe2a2SStefan Roese * 17189eefe2a2SStefan Roese * @leb_overhead: how many bytes are wasted in an LEB when it is filled with 17199eefe2a2SStefan Roese * data nodes of maximum size - used in free space reporting 17209eefe2a2SStefan Roese * @dead_wm: LEB dead space watermark 17219eefe2a2SStefan Roese * @dark_wm: LEB dark space watermark 17229eefe2a2SStefan Roese * @block_cnt: count of 4KiB blocks on the FS 17239eefe2a2SStefan Roese * 17249eefe2a2SStefan Roese * @ranges: UBIFS node length ranges 17259eefe2a2SStefan Roese * @ubi: UBI volume descriptor 17269eefe2a2SStefan Roese * @di: UBI device information 17279eefe2a2SStefan Roese * @vi: UBI volume information 17289eefe2a2SStefan Roese * 17299eefe2a2SStefan Roese * @orph_tree: rb-tree of orphan inode numbers 17309eefe2a2SStefan Roese * @orph_list: list of orphan inode numbers in order added 17319eefe2a2SStefan Roese * @orph_new: list of orphan inode numbers added since last commit 17329eefe2a2SStefan Roese * @orph_cnext: next orphan to commit 17339eefe2a2SStefan Roese * @orph_dnext: next orphan to delete 17349eefe2a2SStefan Roese * @orphan_lock: lock for orph_tree and orph_new 17359eefe2a2SStefan Roese * @orph_buf: buffer for orphan nodes 17369eefe2a2SStefan Roese * @new_orphans: number of orphans since last commit 17379eefe2a2SStefan Roese * @cmt_orphans: number of orphans being committed 17389eefe2a2SStefan Roese * @tot_orphans: number of orphans in the rb_tree 17399eefe2a2SStefan Roese * @max_orphans: maximum number of orphans allowed 17409eefe2a2SStefan Roese * @ohead_lnum: orphan head LEB number 17419eefe2a2SStefan Roese * @ohead_offs: orphan head offset 17429eefe2a2SStefan Roese * @no_orphs: non-zero if there are no orphans 17439eefe2a2SStefan Roese * 17449eefe2a2SStefan Roese * @bgt: UBIFS background thread 17459eefe2a2SStefan Roese * @bgt_name: background thread name 17469eefe2a2SStefan Roese * @need_bgt: if background thread should run 17479eefe2a2SStefan Roese * @need_wbuf_sync: if write-buffers have to be synchronized 17489eefe2a2SStefan Roese * 17499eefe2a2SStefan Roese * @gc_lnum: LEB number used for garbage collection 17509eefe2a2SStefan Roese * @sbuf: a buffer of LEB size used by GC and replay for scanning 17519eefe2a2SStefan Roese * @idx_gc: list of index LEBs that have been garbage collected 17529eefe2a2SStefan Roese * @idx_gc_cnt: number of elements on the idx_gc list 17539eefe2a2SStefan Roese * @gc_seq: incremented for every non-index LEB garbage collected 17549eefe2a2SStefan Roese * @gced_lnum: last non-index LEB that was garbage collected 17559eefe2a2SStefan Roese * 17569eefe2a2SStefan Roese * @infos_list: links all 'ubifs_info' objects 17579eefe2a2SStefan Roese * @umount_mutex: serializes shrinker and un-mount 17589eefe2a2SStefan Roese * @shrinker_run_no: shrinker run number 17599eefe2a2SStefan Roese * 17609eefe2a2SStefan Roese * @space_bits: number of bits needed to record free or dirty space 17619eefe2a2SStefan Roese * @lpt_lnum_bits: number of bits needed to record a LEB number in the LPT 17629eefe2a2SStefan Roese * @lpt_offs_bits: number of bits needed to record an offset in the LPT 17639eefe2a2SStefan Roese * @lpt_spc_bits: number of bits needed to space in the LPT 17649eefe2a2SStefan Roese * @pcnt_bits: number of bits needed to record pnode or nnode number 17659eefe2a2SStefan Roese * @lnum_bits: number of bits needed to record LEB number 17669eefe2a2SStefan Roese * @nnode_sz: size of on-flash nnode 17679eefe2a2SStefan Roese * @pnode_sz: size of on-flash pnode 17689eefe2a2SStefan Roese * @ltab_sz: size of on-flash LPT lprops table 17699eefe2a2SStefan Roese * @lsave_sz: size of on-flash LPT save table 17709eefe2a2SStefan Roese * @pnode_cnt: number of pnodes 17719eefe2a2SStefan Roese * @nnode_cnt: number of nnodes 17729eefe2a2SStefan Roese * @lpt_hght: height of the LPT 17739eefe2a2SStefan Roese * @pnodes_have: number of pnodes in memory 17749eefe2a2SStefan Roese * 17759eefe2a2SStefan Roese * @lp_mutex: protects lprops table and all the other lprops-related fields 17769eefe2a2SStefan Roese * @lpt_lnum: LEB number of the root nnode of the LPT 17779eefe2a2SStefan Roese * @lpt_offs: offset of the root nnode of the LPT 17789eefe2a2SStefan Roese * @nhead_lnum: LEB number of LPT head 17799eefe2a2SStefan Roese * @nhead_offs: offset of LPT head 17809eefe2a2SStefan Roese * @lpt_drty_flgs: dirty flags for LPT special nodes e.g. ltab 17819eefe2a2SStefan Roese * @dirty_nn_cnt: number of dirty nnodes 17829eefe2a2SStefan Roese * @dirty_pn_cnt: number of dirty pnodes 17839eefe2a2SStefan Roese * @check_lpt_free: flag that indicates LPT GC may be needed 17849eefe2a2SStefan Roese * @lpt_sz: LPT size 17859eefe2a2SStefan Roese * @lpt_nod_buf: buffer for an on-flash nnode or pnode 17869eefe2a2SStefan Roese * @lpt_buf: buffer of LEB size used by LPT 17879eefe2a2SStefan Roese * @nroot: address in memory of the root nnode of the LPT 17889eefe2a2SStefan Roese * @lpt_cnext: next LPT node to commit 17899eefe2a2SStefan Roese * @lpt_heap: array of heaps of categorized lprops 17909eefe2a2SStefan Roese * @dirty_idx: a (reverse sorted) copy of the LPROPS_DIRTY_IDX heap as at 17919eefe2a2SStefan Roese * previous commit start 17929eefe2a2SStefan Roese * @uncat_list: list of un-categorized LEBs 17939eefe2a2SStefan Roese * @empty_list: list of empty LEBs 1794ff94bc40SHeiko Schocher * @freeable_list: list of freeable non-index LEBs (free + dirty == @leb_size) 1795ff94bc40SHeiko Schocher * @frdi_idx_list: list of freeable index LEBs (free + dirty == @leb_size) 17969eefe2a2SStefan Roese * @freeable_cnt: number of freeable LEBs in @freeable_list 1797ff94bc40SHeiko Schocher * @in_a_category_cnt: count of lprops which are in a certain category, which 1798ff94bc40SHeiko Schocher * basically meants that they were loaded from the flash 17999eefe2a2SStefan Roese * 18009eefe2a2SStefan Roese * @ltab_lnum: LEB number of LPT's own lprops table 18019eefe2a2SStefan Roese * @ltab_offs: offset of LPT's own lprops table 18029eefe2a2SStefan Roese * @ltab: LPT's own lprops table 18039eefe2a2SStefan Roese * @ltab_cmt: LPT's own lprops table (commit copy) 18049eefe2a2SStefan Roese * @lsave_cnt: number of LEB numbers in LPT's save table 18059eefe2a2SStefan Roese * @lsave_lnum: LEB number of LPT's save table 18069eefe2a2SStefan Roese * @lsave_offs: offset of LPT's save table 18079eefe2a2SStefan Roese * @lsave: LPT's save table 18089eefe2a2SStefan Roese * @lscan_lnum: LEB number of last LPT scan 18099eefe2a2SStefan Roese * 18109eefe2a2SStefan Roese * @rp_size: size of the reserved pool in bytes 18119eefe2a2SStefan Roese * @report_rp_size: size of the reserved pool reported to user-space 18129eefe2a2SStefan Roese * @rp_uid: reserved pool user ID 18139eefe2a2SStefan Roese * @rp_gid: reserved pool group ID 18149eefe2a2SStefan Roese * 1815ff94bc40SHeiko Schocher * @empty: %1 if the UBI device is empty 1816ff94bc40SHeiko Schocher * @need_recovery: %1 if the file-system needs recovery 1817ff94bc40SHeiko Schocher * @replaying: %1 during journal replay 1818ff94bc40SHeiko Schocher * @mounting: %1 while mounting 18190195a7bbSHeiko Schocher * @probing: %1 while attempting to mount if MS_SILENT mount flag is set 1820ff94bc40SHeiko Schocher * @remounting_rw: %1 while re-mounting from R/O mode to R/W mode 18219eefe2a2SStefan Roese * @replay_list: temporary list used during journal replay 18229eefe2a2SStefan Roese * @replay_buds: list of buds to replay 18239eefe2a2SStefan Roese * @cs_sqnum: sequence number of first node in the log (commit start node) 18249eefe2a2SStefan Roese * @replay_sqnum: sequence number of node currently being replayed 1825ff94bc40SHeiko Schocher * @unclean_leb_list: LEBs to recover when re-mounting R/O mounted FS to R/W 1826ff94bc40SHeiko Schocher * mode 1827ff94bc40SHeiko Schocher * @rcvrd_mst_node: recovered master node to write when re-mounting R/O mounted 1828ff94bc40SHeiko Schocher * FS to R/W mode 18299eefe2a2SStefan Roese * @size_tree: inode size information for recovery 18309eefe2a2SStefan Roese * @mount_opts: UBIFS-specific mount options 18319eefe2a2SStefan Roese * 18329eefe2a2SStefan Roese * @dbg: debugging-related information 18339eefe2a2SStefan Roese */ 18349eefe2a2SStefan Roese struct ubifs_info { 18359eefe2a2SStefan Roese struct super_block *vfs_sb; 1836ff94bc40SHeiko Schocher #ifndef __UBOOT__ 1837ff94bc40SHeiko Schocher struct backing_dev_info bdi; 1838ff94bc40SHeiko Schocher #endif 18399eefe2a2SStefan Roese 18409eefe2a2SStefan Roese ino_t highest_inum; 18419eefe2a2SStefan Roese unsigned long long max_sqnum; 18429eefe2a2SStefan Roese unsigned long long cmt_no; 18439eefe2a2SStefan Roese spinlock_t cnt_lock; 18449eefe2a2SStefan Roese int fmt_version; 1845febd7e41SArtem Bityutskiy int ro_compat_version; 18469eefe2a2SStefan Roese unsigned char uuid[16]; 18479eefe2a2SStefan Roese 18489eefe2a2SStefan Roese int lhead_lnum; 18499eefe2a2SStefan Roese int lhead_offs; 18509eefe2a2SStefan Roese int ltail_lnum; 18519eefe2a2SStefan Roese struct mutex log_mutex; 18529eefe2a2SStefan Roese int min_log_bytes; 18539eefe2a2SStefan Roese long long cmt_bud_bytes; 18549eefe2a2SStefan Roese 18559eefe2a2SStefan Roese struct rb_root buds; 18569eefe2a2SStefan Roese long long bud_bytes; 18579eefe2a2SStefan Roese spinlock_t buds_lock; 18589eefe2a2SStefan Roese int jhead_cnt; 18599eefe2a2SStefan Roese struct ubifs_jhead *jheads; 18609eefe2a2SStefan Roese long long max_bud_bytes; 18619eefe2a2SStefan Roese long long bg_bud_bytes; 18629eefe2a2SStefan Roese struct list_head old_buds; 18639eefe2a2SStefan Roese int max_bud_cnt; 18649eefe2a2SStefan Roese 18659eefe2a2SStefan Roese struct rw_semaphore commit_sem; 18669eefe2a2SStefan Roese int cmt_state; 18679eefe2a2SStefan Roese spinlock_t cs_lock; 18689eefe2a2SStefan Roese wait_queue_head_t cmt_wq; 18699eefe2a2SStefan Roese 18709eefe2a2SStefan Roese unsigned int big_lpt:1; 1871ff94bc40SHeiko Schocher unsigned int space_fixup:1; 18729eefe2a2SStefan Roese unsigned int no_chk_data_crc:1; 18739eefe2a2SStefan Roese unsigned int bulk_read:1; 18749eefe2a2SStefan Roese unsigned int default_compr:2; 1875febd7e41SArtem Bityutskiy unsigned int rw_incompat:1; 18769eefe2a2SStefan Roese 18779eefe2a2SStefan Roese struct mutex tnc_mutex; 18789eefe2a2SStefan Roese struct ubifs_zbranch zroot; 18799eefe2a2SStefan Roese struct ubifs_znode *cnext; 18809eefe2a2SStefan Roese struct ubifs_znode *enext; 18819eefe2a2SStefan Roese int *gap_lebs; 18829eefe2a2SStefan Roese void *cbuf; 18839eefe2a2SStefan Roese void *ileb_buf; 18849eefe2a2SStefan Roese int ileb_len; 18859eefe2a2SStefan Roese int ihead_lnum; 18869eefe2a2SStefan Roese int ihead_offs; 18879eefe2a2SStefan Roese int *ilebs; 18889eefe2a2SStefan Roese int ileb_cnt; 18899eefe2a2SStefan Roese int ileb_nxt; 18909eefe2a2SStefan Roese struct rb_root old_idx; 18919eefe2a2SStefan Roese int *bottom_up_buf; 18929eefe2a2SStefan Roese 18939eefe2a2SStefan Roese struct ubifs_mst_node *mst_node; 18949eefe2a2SStefan Roese int mst_offs; 18959eefe2a2SStefan Roese 18969eefe2a2SStefan Roese int max_bu_buf_len; 18979eefe2a2SStefan Roese struct mutex bu_mutex; 18989eefe2a2SStefan Roese struct bu_info bu; 18999eefe2a2SStefan Roese 1900ff94bc40SHeiko Schocher struct mutex write_reserve_mutex; 1901ff94bc40SHeiko Schocher void *write_reserve_buf; 1902ff94bc40SHeiko Schocher 19039eefe2a2SStefan Roese int log_lebs; 19049eefe2a2SStefan Roese long long log_bytes; 19059eefe2a2SStefan Roese int log_last; 19069eefe2a2SStefan Roese int lpt_lebs; 19079eefe2a2SStefan Roese int lpt_first; 19089eefe2a2SStefan Roese int lpt_last; 19099eefe2a2SStefan Roese int orph_lebs; 19109eefe2a2SStefan Roese int orph_first; 19119eefe2a2SStefan Roese int orph_last; 19129eefe2a2SStefan Roese int main_lebs; 19139eefe2a2SStefan Roese int main_first; 19149eefe2a2SStefan Roese long long main_bytes; 19159eefe2a2SStefan Roese 19169eefe2a2SStefan Roese uint8_t key_hash_type; 19179eefe2a2SStefan Roese uint32_t (*key_hash)(const char *str, int len); 19189eefe2a2SStefan Roese int key_fmt; 19199eefe2a2SStefan Roese int key_len; 19209eefe2a2SStefan Roese int fanout; 19219eefe2a2SStefan Roese 19229eefe2a2SStefan Roese int min_io_size; 19239eefe2a2SStefan Roese int min_io_shift; 1924ff94bc40SHeiko Schocher int max_write_size; 1925ff94bc40SHeiko Schocher int max_write_shift; 19269eefe2a2SStefan Roese int leb_size; 1927ff94bc40SHeiko Schocher int leb_start; 19289eefe2a2SStefan Roese int half_leb_size; 1929ff94bc40SHeiko Schocher int idx_leb_size; 19309eefe2a2SStefan Roese int leb_cnt; 19319eefe2a2SStefan Roese int max_leb_cnt; 19329eefe2a2SStefan Roese int old_leb_cnt; 1933ff94bc40SHeiko Schocher unsigned int ro_media:1; 1934ff94bc40SHeiko Schocher unsigned int ro_mount:1; 1935ff94bc40SHeiko Schocher unsigned int ro_error:1; 19369eefe2a2SStefan Roese 1937ff94bc40SHeiko Schocher atomic_long_t dirty_pg_cnt; 1938ff94bc40SHeiko Schocher atomic_long_t dirty_zn_cnt; 1939ff94bc40SHeiko Schocher atomic_long_t clean_zn_cnt; 1940ff94bc40SHeiko Schocher 19419eefe2a2SStefan Roese spinlock_t space_lock; 19429eefe2a2SStefan Roese struct ubifs_lp_stats lst; 1943ff94bc40SHeiko Schocher struct ubifs_budg_info bi; 1944ff94bc40SHeiko Schocher unsigned long long calc_idx_sz; 19459eefe2a2SStefan Roese 19469eefe2a2SStefan Roese int ref_node_alsz; 19479eefe2a2SStefan Roese int mst_node_alsz; 19489eefe2a2SStefan Roese int min_idx_node_sz; 19499eefe2a2SStefan Roese int max_idx_node_sz; 19509eefe2a2SStefan Roese long long max_inode_sz; 19519eefe2a2SStefan Roese int max_znode_sz; 19529eefe2a2SStefan Roese 19539eefe2a2SStefan Roese int leb_overhead; 19549eefe2a2SStefan Roese int dead_wm; 19559eefe2a2SStefan Roese int dark_wm; 19569eefe2a2SStefan Roese int block_cnt; 19579eefe2a2SStefan Roese 19589eefe2a2SStefan Roese struct ubifs_node_range ranges[UBIFS_NODE_TYPES_CNT]; 19599eefe2a2SStefan Roese struct ubi_volume_desc *ubi; 19609eefe2a2SStefan Roese struct ubi_device_info di; 19619eefe2a2SStefan Roese struct ubi_volume_info vi; 19629eefe2a2SStefan Roese 19639eefe2a2SStefan Roese struct rb_root orph_tree; 19649eefe2a2SStefan Roese struct list_head orph_list; 19659eefe2a2SStefan Roese struct list_head orph_new; 19669eefe2a2SStefan Roese struct ubifs_orphan *orph_cnext; 19679eefe2a2SStefan Roese struct ubifs_orphan *orph_dnext; 19689eefe2a2SStefan Roese spinlock_t orphan_lock; 19699eefe2a2SStefan Roese void *orph_buf; 19709eefe2a2SStefan Roese int new_orphans; 19719eefe2a2SStefan Roese int cmt_orphans; 19729eefe2a2SStefan Roese int tot_orphans; 19739eefe2a2SStefan Roese int max_orphans; 19749eefe2a2SStefan Roese int ohead_lnum; 19759eefe2a2SStefan Roese int ohead_offs; 19769eefe2a2SStefan Roese int no_orphs; 19779eefe2a2SStefan Roese 19789eefe2a2SStefan Roese struct task_struct *bgt; 19799eefe2a2SStefan Roese char bgt_name[sizeof(BGT_NAME_PATTERN) + 9]; 19809eefe2a2SStefan Roese int need_bgt; 19819eefe2a2SStefan Roese int need_wbuf_sync; 19829eefe2a2SStefan Roese 19839eefe2a2SStefan Roese int gc_lnum; 19849eefe2a2SStefan Roese void *sbuf; 19859eefe2a2SStefan Roese struct list_head idx_gc; 19869eefe2a2SStefan Roese int idx_gc_cnt; 19879eefe2a2SStefan Roese int gc_seq; 19889eefe2a2SStefan Roese int gced_lnum; 19899eefe2a2SStefan Roese 19909eefe2a2SStefan Roese struct list_head infos_list; 19919eefe2a2SStefan Roese struct mutex umount_mutex; 19929eefe2a2SStefan Roese unsigned int shrinker_run_no; 19939eefe2a2SStefan Roese 19949eefe2a2SStefan Roese int space_bits; 19959eefe2a2SStefan Roese int lpt_lnum_bits; 19969eefe2a2SStefan Roese int lpt_offs_bits; 19979eefe2a2SStefan Roese int lpt_spc_bits; 19989eefe2a2SStefan Roese int pcnt_bits; 19999eefe2a2SStefan Roese int lnum_bits; 20009eefe2a2SStefan Roese int nnode_sz; 20019eefe2a2SStefan Roese int pnode_sz; 20029eefe2a2SStefan Roese int ltab_sz; 20039eefe2a2SStefan Roese int lsave_sz; 20049eefe2a2SStefan Roese int pnode_cnt; 20059eefe2a2SStefan Roese int nnode_cnt; 20069eefe2a2SStefan Roese int lpt_hght; 20079eefe2a2SStefan Roese int pnodes_have; 20089eefe2a2SStefan Roese 20099eefe2a2SStefan Roese struct mutex lp_mutex; 20109eefe2a2SStefan Roese int lpt_lnum; 20119eefe2a2SStefan Roese int lpt_offs; 20129eefe2a2SStefan Roese int nhead_lnum; 20139eefe2a2SStefan Roese int nhead_offs; 20149eefe2a2SStefan Roese int lpt_drty_flgs; 20159eefe2a2SStefan Roese int dirty_nn_cnt; 20169eefe2a2SStefan Roese int dirty_pn_cnt; 20179eefe2a2SStefan Roese int check_lpt_free; 20189eefe2a2SStefan Roese long long lpt_sz; 20199eefe2a2SStefan Roese void *lpt_nod_buf; 20209eefe2a2SStefan Roese void *lpt_buf; 20219eefe2a2SStefan Roese struct ubifs_nnode *nroot; 20229eefe2a2SStefan Roese struct ubifs_cnode *lpt_cnext; 20239eefe2a2SStefan Roese struct ubifs_lpt_heap lpt_heap[LPROPS_HEAP_CNT]; 20249eefe2a2SStefan Roese struct ubifs_lpt_heap dirty_idx; 20259eefe2a2SStefan Roese struct list_head uncat_list; 20269eefe2a2SStefan Roese struct list_head empty_list; 20279eefe2a2SStefan Roese struct list_head freeable_list; 20289eefe2a2SStefan Roese struct list_head frdi_idx_list; 20299eefe2a2SStefan Roese int freeable_cnt; 2030ff94bc40SHeiko Schocher int in_a_category_cnt; 20319eefe2a2SStefan Roese 20329eefe2a2SStefan Roese int ltab_lnum; 20339eefe2a2SStefan Roese int ltab_offs; 20349eefe2a2SStefan Roese struct ubifs_lpt_lprops *ltab; 20359eefe2a2SStefan Roese struct ubifs_lpt_lprops *ltab_cmt; 20369eefe2a2SStefan Roese int lsave_cnt; 20379eefe2a2SStefan Roese int lsave_lnum; 20389eefe2a2SStefan Roese int lsave_offs; 20399eefe2a2SStefan Roese int *lsave; 20409eefe2a2SStefan Roese int lscan_lnum; 20419eefe2a2SStefan Roese 20429eefe2a2SStefan Roese long long rp_size; 20439eefe2a2SStefan Roese long long report_rp_size; 2044ff94bc40SHeiko Schocher kuid_t rp_uid; 2045ff94bc40SHeiko Schocher kgid_t rp_gid; 20469eefe2a2SStefan Roese 20479eefe2a2SStefan Roese /* The below fields are used only during mounting and re-mounting */ 2048ff94bc40SHeiko Schocher unsigned int empty:1; 2049ff94bc40SHeiko Schocher unsigned int need_recovery:1; 2050ff94bc40SHeiko Schocher unsigned int replaying:1; 2051ff94bc40SHeiko Schocher unsigned int mounting:1; 2052ff94bc40SHeiko Schocher unsigned int remounting_rw:1; 20530195a7bbSHeiko Schocher unsigned int probing:1; 20549eefe2a2SStefan Roese struct list_head replay_list; 20559eefe2a2SStefan Roese struct list_head replay_buds; 20569eefe2a2SStefan Roese unsigned long long cs_sqnum; 20579eefe2a2SStefan Roese unsigned long long replay_sqnum; 20589eefe2a2SStefan Roese struct list_head unclean_leb_list; 20599eefe2a2SStefan Roese struct ubifs_mst_node *rcvrd_mst_node; 20609eefe2a2SStefan Roese struct rb_root size_tree; 20619eefe2a2SStefan Roese struct ubifs_mount_opts mount_opts; 20629eefe2a2SStefan Roese 2063ff94bc40SHeiko Schocher #ifndef __UBOOT__ 20649eefe2a2SStefan Roese struct ubifs_debug_info *dbg; 20659eefe2a2SStefan Roese #endif 20669eefe2a2SStefan Roese }; 20679eefe2a2SStefan Roese 2068ff94bc40SHeiko Schocher extern struct list_head ubifs_infos; 20699eefe2a2SStefan Roese extern spinlock_t ubifs_infos_lock; 2070ff94bc40SHeiko Schocher extern atomic_long_t ubifs_clean_zn_cnt; 20719eefe2a2SStefan Roese extern struct kmem_cache *ubifs_inode_slab; 20729eefe2a2SStefan Roese extern const struct super_operations ubifs_super_operations; 20730195a7bbSHeiko Schocher extern const struct xattr_handler *ubifs_xattr_handlers[]; 20749eefe2a2SStefan Roese extern const struct address_space_operations ubifs_file_address_operations; 20759eefe2a2SStefan Roese extern const struct file_operations ubifs_file_operations; 20769eefe2a2SStefan Roese extern const struct inode_operations ubifs_file_inode_operations; 20779eefe2a2SStefan Roese extern const struct file_operations ubifs_dir_operations; 20789eefe2a2SStefan Roese extern const struct inode_operations ubifs_dir_inode_operations; 20799eefe2a2SStefan Roese extern const struct inode_operations ubifs_symlink_inode_operations; 20809eefe2a2SStefan Roese extern struct backing_dev_info ubifs_backing_dev_info; 20819eefe2a2SStefan Roese extern struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT]; 20829eefe2a2SStefan Roese 20839eefe2a2SStefan Roese /* io.c */ 20849eefe2a2SStefan Roese void ubifs_ro_mode(struct ubifs_info *c, int err); 2085ff94bc40SHeiko Schocher int ubifs_leb_read(const struct ubifs_info *c, int lnum, void *buf, int offs, 2086ff94bc40SHeiko Schocher int len, int even_ebadmsg); 2087ff94bc40SHeiko Schocher int ubifs_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs, 2088ff94bc40SHeiko Schocher int len); 2089ff94bc40SHeiko Schocher int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len); 2090ff94bc40SHeiko Schocher int ubifs_leb_unmap(struct ubifs_info *c, int lnum); 2091ff94bc40SHeiko Schocher int ubifs_leb_map(struct ubifs_info *c, int lnum); 2092ff94bc40SHeiko Schocher int ubifs_is_mapped(const struct ubifs_info *c, int lnum); 20939eefe2a2SStefan Roese int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len); 2094ff94bc40SHeiko Schocher int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs); 20959eefe2a2SStefan Roese int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf); 20969eefe2a2SStefan Roese int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len, 20979eefe2a2SStefan Roese int lnum, int offs); 20989eefe2a2SStefan Roese int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len, 20999eefe2a2SStefan Roese int lnum, int offs); 21009eefe2a2SStefan Roese int ubifs_write_node(struct ubifs_info *c, void *node, int len, int lnum, 2101ff94bc40SHeiko Schocher int offs); 21029eefe2a2SStefan Roese int ubifs_check_node(const struct ubifs_info *c, const void *buf, int lnum, 21039eefe2a2SStefan Roese int offs, int quiet, int must_chk_crc); 21049eefe2a2SStefan Roese void ubifs_prepare_node(struct ubifs_info *c, void *buf, int len, int pad); 21059eefe2a2SStefan Roese void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last); 21069eefe2a2SStefan Roese int ubifs_io_init(struct ubifs_info *c); 21079eefe2a2SStefan Roese void ubifs_pad(const struct ubifs_info *c, void *buf, int pad); 21089eefe2a2SStefan Roese int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf); 21099eefe2a2SStefan Roese int ubifs_bg_wbufs_sync(struct ubifs_info *c); 21109eefe2a2SStefan Roese void ubifs_wbuf_add_ino_nolock(struct ubifs_wbuf *wbuf, ino_t inum); 21119eefe2a2SStefan Roese int ubifs_sync_wbufs_by_inode(struct ubifs_info *c, struct inode *inode); 21129eefe2a2SStefan Roese 21139eefe2a2SStefan Roese /* scan.c */ 21149eefe2a2SStefan Roese struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum, 2115ff94bc40SHeiko Schocher int offs, void *sbuf, int quiet); 21169eefe2a2SStefan Roese void ubifs_scan_destroy(struct ubifs_scan_leb *sleb); 21179eefe2a2SStefan Roese int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum, 21189eefe2a2SStefan Roese int offs, int quiet); 21199eefe2a2SStefan Roese struct ubifs_scan_leb *ubifs_start_scan(const struct ubifs_info *c, int lnum, 21209eefe2a2SStefan Roese int offs, void *sbuf); 21219eefe2a2SStefan Roese void ubifs_end_scan(const struct ubifs_info *c, struct ubifs_scan_leb *sleb, 21229eefe2a2SStefan Roese int lnum, int offs); 21239eefe2a2SStefan Roese int ubifs_add_snod(const struct ubifs_info *c, struct ubifs_scan_leb *sleb, 21249eefe2a2SStefan Roese void *buf, int offs); 21259eefe2a2SStefan Roese void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs, 21269eefe2a2SStefan Roese void *buf); 21279eefe2a2SStefan Roese 21289eefe2a2SStefan Roese /* log.c */ 21299eefe2a2SStefan Roese void ubifs_add_bud(struct ubifs_info *c, struct ubifs_bud *bud); 21309eefe2a2SStefan Roese void ubifs_create_buds_lists(struct ubifs_info *c); 21319eefe2a2SStefan Roese int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs); 21329eefe2a2SStefan Roese struct ubifs_bud *ubifs_search_bud(struct ubifs_info *c, int lnum); 21339eefe2a2SStefan Roese struct ubifs_wbuf *ubifs_get_wbuf(struct ubifs_info *c, int lnum); 21349eefe2a2SStefan Roese int ubifs_log_start_commit(struct ubifs_info *c, int *ltail_lnum); 21359eefe2a2SStefan Roese int ubifs_log_end_commit(struct ubifs_info *c, int new_ltail_lnum); 21369eefe2a2SStefan Roese int ubifs_log_post_commit(struct ubifs_info *c, int old_ltail_lnum); 21379eefe2a2SStefan Roese int ubifs_consolidate_log(struct ubifs_info *c); 21389eefe2a2SStefan Roese 21399eefe2a2SStefan Roese /* journal.c */ 21409eefe2a2SStefan Roese int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir, 21419eefe2a2SStefan Roese const struct qstr *nm, const struct inode *inode, 21429eefe2a2SStefan Roese int deletion, int xent); 21439eefe2a2SStefan Roese int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode, 21449eefe2a2SStefan Roese const union ubifs_key *key, const void *buf, int len); 21459eefe2a2SStefan Roese int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode); 21469eefe2a2SStefan Roese int ubifs_jnl_delete_inode(struct ubifs_info *c, const struct inode *inode); 21479eefe2a2SStefan Roese int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir, 21489eefe2a2SStefan Roese const struct dentry *old_dentry, 21499eefe2a2SStefan Roese const struct inode *new_dir, 21509eefe2a2SStefan Roese const struct dentry *new_dentry, int sync); 21519eefe2a2SStefan Roese int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode, 21529eefe2a2SStefan Roese loff_t old_size, loff_t new_size); 21539eefe2a2SStefan Roese int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host, 21549eefe2a2SStefan Roese const struct inode *inode, const struct qstr *nm); 21559eefe2a2SStefan Roese int ubifs_jnl_change_xattr(struct ubifs_info *c, const struct inode *inode1, 21569eefe2a2SStefan Roese const struct inode *inode2); 21579eefe2a2SStefan Roese 21589eefe2a2SStefan Roese /* budget.c */ 21599eefe2a2SStefan Roese int ubifs_budget_space(struct ubifs_info *c, struct ubifs_budget_req *req); 21609eefe2a2SStefan Roese void ubifs_release_budget(struct ubifs_info *c, struct ubifs_budget_req *req); 21619eefe2a2SStefan Roese void ubifs_release_dirty_inode_budget(struct ubifs_info *c, 21629eefe2a2SStefan Roese struct ubifs_inode *ui); 21639eefe2a2SStefan Roese int ubifs_budget_inode_op(struct ubifs_info *c, struct inode *inode, 21649eefe2a2SStefan Roese struct ubifs_budget_req *req); 21659eefe2a2SStefan Roese void ubifs_release_ino_dirty(struct ubifs_info *c, struct inode *inode, 21669eefe2a2SStefan Roese struct ubifs_budget_req *req); 21679eefe2a2SStefan Roese void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode, 21689eefe2a2SStefan Roese struct ubifs_budget_req *req); 21699eefe2a2SStefan Roese long long ubifs_get_free_space(struct ubifs_info *c); 21709eefe2a2SStefan Roese long long ubifs_get_free_space_nolock(struct ubifs_info *c); 21719eefe2a2SStefan Roese int ubifs_calc_min_idx_lebs(struct ubifs_info *c); 21729eefe2a2SStefan Roese void ubifs_convert_page_budget(struct ubifs_info *c); 21739eefe2a2SStefan Roese long long ubifs_reported_space(const struct ubifs_info *c, long long free); 21749eefe2a2SStefan Roese long long ubifs_calc_available(const struct ubifs_info *c, int min_idx_lebs); 21759eefe2a2SStefan Roese 21769eefe2a2SStefan Roese /* find.c */ 2177ff94bc40SHeiko Schocher int ubifs_find_free_space(struct ubifs_info *c, int min_space, int *offs, 21789eefe2a2SStefan Roese int squeeze); 21799eefe2a2SStefan Roese int ubifs_find_free_leb_for_idx(struct ubifs_info *c); 21809eefe2a2SStefan Roese int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp, 21819eefe2a2SStefan Roese int min_space, int pick_free); 21829eefe2a2SStefan Roese int ubifs_find_dirty_idx_leb(struct ubifs_info *c); 21839eefe2a2SStefan Roese int ubifs_save_dirty_idx_lnums(struct ubifs_info *c); 21849eefe2a2SStefan Roese 21859eefe2a2SStefan Roese /* tnc.c */ 21869eefe2a2SStefan Roese int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key, 21879eefe2a2SStefan Roese struct ubifs_znode **zn, int *n); 21889eefe2a2SStefan Roese int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key, 21899eefe2a2SStefan Roese void *node, const struct qstr *nm); 21909eefe2a2SStefan Roese int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key, 21919eefe2a2SStefan Roese void *node, int *lnum, int *offs); 21929eefe2a2SStefan Roese int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum, 21939eefe2a2SStefan Roese int offs, int len); 21949eefe2a2SStefan Roese int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key, 21959eefe2a2SStefan Roese int old_lnum, int old_offs, int lnum, int offs, int len); 21969eefe2a2SStefan Roese int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key, 21979eefe2a2SStefan Roese int lnum, int offs, int len, const struct qstr *nm); 21989eefe2a2SStefan Roese int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key); 21999eefe2a2SStefan Roese int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key, 22009eefe2a2SStefan Roese const struct qstr *nm); 22019eefe2a2SStefan Roese int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key, 22029eefe2a2SStefan Roese union ubifs_key *to_key); 22039eefe2a2SStefan Roese int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum); 22049eefe2a2SStefan Roese struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c, 22059eefe2a2SStefan Roese union ubifs_key *key, 22069eefe2a2SStefan Roese const struct qstr *nm); 22079eefe2a2SStefan Roese void ubifs_tnc_close(struct ubifs_info *c); 22089eefe2a2SStefan Roese int ubifs_tnc_has_node(struct ubifs_info *c, union ubifs_key *key, int level, 22099eefe2a2SStefan Roese int lnum, int offs, int is_idx); 22109eefe2a2SStefan Roese int ubifs_dirty_idx_node(struct ubifs_info *c, union ubifs_key *key, int level, 22119eefe2a2SStefan Roese int lnum, int offs); 22129eefe2a2SStefan Roese /* Shared by tnc.c for tnc_commit.c */ 22139eefe2a2SStefan Roese void destroy_old_idx(struct ubifs_info *c); 22149eefe2a2SStefan Roese int is_idx_node_in_tnc(struct ubifs_info *c, union ubifs_key *key, int level, 22159eefe2a2SStefan Roese int lnum, int offs); 22169eefe2a2SStefan Roese int insert_old_idx_znode(struct ubifs_info *c, struct ubifs_znode *znode); 22179eefe2a2SStefan Roese int ubifs_tnc_get_bu_keys(struct ubifs_info *c, struct bu_info *bu); 22189eefe2a2SStefan Roese int ubifs_tnc_bulk_read(struct ubifs_info *c, struct bu_info *bu); 22199eefe2a2SStefan Roese 22209eefe2a2SStefan Roese /* tnc_misc.c */ 22219eefe2a2SStefan Roese struct ubifs_znode *ubifs_tnc_levelorder_next(struct ubifs_znode *zr, 22229eefe2a2SStefan Roese struct ubifs_znode *znode); 22239eefe2a2SStefan Roese int ubifs_search_zbranch(const struct ubifs_info *c, 22249eefe2a2SStefan Roese const struct ubifs_znode *znode, 22259eefe2a2SStefan Roese const union ubifs_key *key, int *n); 22269eefe2a2SStefan Roese struct ubifs_znode *ubifs_tnc_postorder_first(struct ubifs_znode *znode); 22279eefe2a2SStefan Roese struct ubifs_znode *ubifs_tnc_postorder_next(struct ubifs_znode *znode); 22289eefe2a2SStefan Roese long ubifs_destroy_tnc_subtree(struct ubifs_znode *zr); 22299eefe2a2SStefan Roese struct ubifs_znode *ubifs_load_znode(struct ubifs_info *c, 22309eefe2a2SStefan Roese struct ubifs_zbranch *zbr, 22319eefe2a2SStefan Roese struct ubifs_znode *parent, int iip); 22329eefe2a2SStefan Roese int ubifs_tnc_read_node(struct ubifs_info *c, struct ubifs_zbranch *zbr, 22339eefe2a2SStefan Roese void *node); 22349eefe2a2SStefan Roese 22359eefe2a2SStefan Roese /* tnc_commit.c */ 22369eefe2a2SStefan Roese int ubifs_tnc_start_commit(struct ubifs_info *c, struct ubifs_zbranch *zroot); 22379eefe2a2SStefan Roese int ubifs_tnc_end_commit(struct ubifs_info *c); 22389eefe2a2SStefan Roese 2239ff94bc40SHeiko Schocher #ifndef __UBOOT__ 22409eefe2a2SStefan Roese /* shrinker.c */ 2241ff94bc40SHeiko Schocher unsigned long ubifs_shrink_scan(struct shrinker *shrink, 2242ff94bc40SHeiko Schocher struct shrink_control *sc); 2243ff94bc40SHeiko Schocher unsigned long ubifs_shrink_count(struct shrinker *shrink, 2244ff94bc40SHeiko Schocher struct shrink_control *sc); 2245ff94bc40SHeiko Schocher #endif 22469eefe2a2SStefan Roese 22479eefe2a2SStefan Roese /* commit.c */ 22489eefe2a2SStefan Roese int ubifs_bg_thread(void *info); 22499eefe2a2SStefan Roese void ubifs_commit_required(struct ubifs_info *c); 22509eefe2a2SStefan Roese void ubifs_request_bg_commit(struct ubifs_info *c); 22519eefe2a2SStefan Roese int ubifs_run_commit(struct ubifs_info *c); 22529eefe2a2SStefan Roese void ubifs_recovery_commit(struct ubifs_info *c); 22539eefe2a2SStefan Roese int ubifs_gc_should_commit(struct ubifs_info *c); 22549eefe2a2SStefan Roese void ubifs_wait_for_commit(struct ubifs_info *c); 22559eefe2a2SStefan Roese 22569eefe2a2SStefan Roese /* master.c */ 22579eefe2a2SStefan Roese int ubifs_read_master(struct ubifs_info *c); 22589eefe2a2SStefan Roese int ubifs_write_master(struct ubifs_info *c); 22599eefe2a2SStefan Roese 22609eefe2a2SStefan Roese /* sb.c */ 22619eefe2a2SStefan Roese int ubifs_read_superblock(struct ubifs_info *c); 22629eefe2a2SStefan Roese struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c); 22639eefe2a2SStefan Roese int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup); 2264ff94bc40SHeiko Schocher int ubifs_fixup_free_space(struct ubifs_info *c); 22659eefe2a2SStefan Roese 22669eefe2a2SStefan Roese /* replay.c */ 22679eefe2a2SStefan Roese int ubifs_validate_entry(struct ubifs_info *c, 22689eefe2a2SStefan Roese const struct ubifs_dent_node *dent); 22699eefe2a2SStefan Roese int ubifs_replay_journal(struct ubifs_info *c); 22709eefe2a2SStefan Roese 22719eefe2a2SStefan Roese /* gc.c */ 22729eefe2a2SStefan Roese int ubifs_garbage_collect(struct ubifs_info *c, int anyway); 22739eefe2a2SStefan Roese int ubifs_gc_start_commit(struct ubifs_info *c); 22749eefe2a2SStefan Roese int ubifs_gc_end_commit(struct ubifs_info *c); 22759eefe2a2SStefan Roese void ubifs_destroy_idx_gc(struct ubifs_info *c); 22769eefe2a2SStefan Roese int ubifs_get_idx_gc_leb(struct ubifs_info *c); 22779eefe2a2SStefan Roese int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp); 22789eefe2a2SStefan Roese 22799eefe2a2SStefan Roese /* orphan.c */ 22809eefe2a2SStefan Roese int ubifs_add_orphan(struct ubifs_info *c, ino_t inum); 22819eefe2a2SStefan Roese void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum); 22829eefe2a2SStefan Roese int ubifs_orphan_start_commit(struct ubifs_info *c); 22839eefe2a2SStefan Roese int ubifs_orphan_end_commit(struct ubifs_info *c); 22849eefe2a2SStefan Roese int ubifs_mount_orphans(struct ubifs_info *c, int unclean, int read_only); 22859eefe2a2SStefan Roese int ubifs_clear_orphans(struct ubifs_info *c); 22869eefe2a2SStefan Roese 22879eefe2a2SStefan Roese /* lpt.c */ 22889eefe2a2SStefan Roese int ubifs_calc_lpt_geom(struct ubifs_info *c); 22899eefe2a2SStefan Roese int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first, 22909eefe2a2SStefan Roese int *lpt_lebs, int *big_lpt); 22919eefe2a2SStefan Roese int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr); 22929eefe2a2SStefan Roese struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum); 22939eefe2a2SStefan Roese struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum); 22949eefe2a2SStefan Roese int ubifs_lpt_scan_nolock(struct ubifs_info *c, int start_lnum, int end_lnum, 22959eefe2a2SStefan Roese ubifs_lpt_scan_callback scan_cb, void *data); 22969eefe2a2SStefan Roese 22979eefe2a2SStefan Roese /* Shared by lpt.c for lpt_commit.c */ 22989eefe2a2SStefan Roese void ubifs_pack_lsave(struct ubifs_info *c, void *buf, int *lsave); 22999eefe2a2SStefan Roese void ubifs_pack_ltab(struct ubifs_info *c, void *buf, 23009eefe2a2SStefan Roese struct ubifs_lpt_lprops *ltab); 23019eefe2a2SStefan Roese void ubifs_pack_pnode(struct ubifs_info *c, void *buf, 23029eefe2a2SStefan Roese struct ubifs_pnode *pnode); 23039eefe2a2SStefan Roese void ubifs_pack_nnode(struct ubifs_info *c, void *buf, 23049eefe2a2SStefan Roese struct ubifs_nnode *nnode); 23059eefe2a2SStefan Roese struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c, 23069eefe2a2SStefan Roese struct ubifs_nnode *parent, int iip); 23079eefe2a2SStefan Roese struct ubifs_nnode *ubifs_get_nnode(struct ubifs_info *c, 23089eefe2a2SStefan Roese struct ubifs_nnode *parent, int iip); 23099eefe2a2SStefan Roese int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip); 23109eefe2a2SStefan Roese void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty); 23119eefe2a2SStefan Roese void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode); 23129eefe2a2SStefan Roese uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits); 23139eefe2a2SStefan Roese struct ubifs_nnode *ubifs_first_nnode(struct ubifs_info *c, int *hght); 23149eefe2a2SStefan Roese /* Needed only in debugging code in lpt_commit.c */ 23159eefe2a2SStefan Roese int ubifs_unpack_nnode(const struct ubifs_info *c, void *buf, 23169eefe2a2SStefan Roese struct ubifs_nnode *nnode); 23179eefe2a2SStefan Roese 23189eefe2a2SStefan Roese /* lpt_commit.c */ 23199eefe2a2SStefan Roese int ubifs_lpt_start_commit(struct ubifs_info *c); 23209eefe2a2SStefan Roese int ubifs_lpt_end_commit(struct ubifs_info *c); 23219eefe2a2SStefan Roese int ubifs_lpt_post_commit(struct ubifs_info *c); 23229eefe2a2SStefan Roese void ubifs_lpt_free(struct ubifs_info *c, int wr_only); 23239eefe2a2SStefan Roese 23249eefe2a2SStefan Roese /* lprops.c */ 23259eefe2a2SStefan Roese const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c, 23269eefe2a2SStefan Roese const struct ubifs_lprops *lp, 23279eefe2a2SStefan Roese int free, int dirty, int flags, 23289eefe2a2SStefan Roese int idx_gc_cnt); 23299eefe2a2SStefan Roese void ubifs_get_lp_stats(struct ubifs_info *c, struct ubifs_lp_stats *lst); 23309eefe2a2SStefan Roese void ubifs_add_to_cat(struct ubifs_info *c, struct ubifs_lprops *lprops, 23319eefe2a2SStefan Roese int cat); 23329eefe2a2SStefan Roese void ubifs_replace_cat(struct ubifs_info *c, struct ubifs_lprops *old_lprops, 23339eefe2a2SStefan Roese struct ubifs_lprops *new_lprops); 23349eefe2a2SStefan Roese void ubifs_ensure_cat(struct ubifs_info *c, struct ubifs_lprops *lprops); 23359eefe2a2SStefan Roese int ubifs_categorize_lprops(const struct ubifs_info *c, 23369eefe2a2SStefan Roese const struct ubifs_lprops *lprops); 23379eefe2a2SStefan Roese int ubifs_change_one_lp(struct ubifs_info *c, int lnum, int free, int dirty, 23389eefe2a2SStefan Roese int flags_set, int flags_clean, int idx_gc_cnt); 23399eefe2a2SStefan Roese int ubifs_update_one_lp(struct ubifs_info *c, int lnum, int free, int dirty, 23409eefe2a2SStefan Roese int flags_set, int flags_clean); 23419eefe2a2SStefan Roese int ubifs_read_one_lp(struct ubifs_info *c, int lnum, struct ubifs_lprops *lp); 23429eefe2a2SStefan Roese const struct ubifs_lprops *ubifs_fast_find_free(struct ubifs_info *c); 23439eefe2a2SStefan Roese const struct ubifs_lprops *ubifs_fast_find_empty(struct ubifs_info *c); 23449eefe2a2SStefan Roese const struct ubifs_lprops *ubifs_fast_find_freeable(struct ubifs_info *c); 23459eefe2a2SStefan Roese const struct ubifs_lprops *ubifs_fast_find_frdi_idx(struct ubifs_info *c); 2346ff94bc40SHeiko Schocher int ubifs_calc_dark(const struct ubifs_info *c, int spc); 23479eefe2a2SStefan Roese 23489eefe2a2SStefan Roese /* file.c */ 2349ff94bc40SHeiko Schocher int ubifs_fsync(struct file *file, loff_t start, loff_t end, int datasync); 23509eefe2a2SStefan Roese int ubifs_setattr(struct dentry *dentry, struct iattr *attr); 23519eefe2a2SStefan Roese 23529eefe2a2SStefan Roese /* dir.c */ 23539eefe2a2SStefan Roese struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir, 2354ff94bc40SHeiko Schocher umode_t mode); 23559eefe2a2SStefan Roese int ubifs_getattr(struct vfsmount *mnt, struct dentry *dentry, 23569eefe2a2SStefan Roese struct kstat *stat); 23579eefe2a2SStefan Roese 23589eefe2a2SStefan Roese /* xattr.c */ 23599eefe2a2SStefan Roese int ubifs_setxattr(struct dentry *dentry, const char *name, 23609eefe2a2SStefan Roese const void *value, size_t size, int flags); 23619eefe2a2SStefan Roese ssize_t ubifs_getxattr(struct dentry *dentry, const char *name, void *buf, 23629eefe2a2SStefan Roese size_t size); 23639eefe2a2SStefan Roese ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size); 23649eefe2a2SStefan Roese int ubifs_removexattr(struct dentry *dentry, const char *name); 23650195a7bbSHeiko Schocher int ubifs_init_security(struct inode *dentry, struct inode *inode, 23660195a7bbSHeiko Schocher const struct qstr *qstr); 23679eefe2a2SStefan Roese 23689eefe2a2SStefan Roese /* super.c */ 23699eefe2a2SStefan Roese struct inode *ubifs_iget(struct super_block *sb, unsigned long inum); 23709eefe2a2SStefan Roese int ubifs_iput(struct inode *inode); 23719eefe2a2SStefan Roese 23729eefe2a2SStefan Roese /* recovery.c */ 23739eefe2a2SStefan Roese int ubifs_recover_master_node(struct ubifs_info *c); 23749eefe2a2SStefan Roese int ubifs_write_rcvrd_mst_node(struct ubifs_info *c); 23759eefe2a2SStefan Roese struct ubifs_scan_leb *ubifs_recover_leb(struct ubifs_info *c, int lnum, 2376ff94bc40SHeiko Schocher int offs, void *sbuf, int jhead); 23779eefe2a2SStefan Roese struct ubifs_scan_leb *ubifs_recover_log_leb(struct ubifs_info *c, int lnum, 23789eefe2a2SStefan Roese int offs, void *sbuf); 2379ff94bc40SHeiko Schocher int ubifs_recover_inl_heads(struct ubifs_info *c, void *sbuf); 2380ff94bc40SHeiko Schocher int ubifs_clean_lebs(struct ubifs_info *c, void *sbuf); 23819eefe2a2SStefan Roese int ubifs_rcvry_gc_commit(struct ubifs_info *c); 23829eefe2a2SStefan Roese int ubifs_recover_size_accum(struct ubifs_info *c, union ubifs_key *key, 23839eefe2a2SStefan Roese int deletion, loff_t new_size); 23849eefe2a2SStefan Roese int ubifs_recover_size(struct ubifs_info *c); 23859eefe2a2SStefan Roese void ubifs_destroy_size_tree(struct ubifs_info *c); 23869eefe2a2SStefan Roese 23879eefe2a2SStefan Roese /* ioctl.c */ 23889eefe2a2SStefan Roese long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 23899eefe2a2SStefan Roese void ubifs_set_inode_flags(struct inode *inode); 23909eefe2a2SStefan Roese #ifdef CONFIG_COMPAT 23919eefe2a2SStefan Roese long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 23929eefe2a2SStefan Roese #endif 23939eefe2a2SStefan Roese 23949eefe2a2SStefan Roese /* compressor.c */ 23959eefe2a2SStefan Roese int __init ubifs_compressors_init(void); 2396ff94bc40SHeiko Schocher void ubifs_compressors_exit(void); 23970195a7bbSHeiko Schocher void ubifs_compress(const struct ubifs_info *c, const void *in_buf, int in_len, 23980195a7bbSHeiko Schocher void *out_buf, int *out_len, int *compr_type); 23990195a7bbSHeiko Schocher int ubifs_decompress(const struct ubifs_info *c, const void *buf, int len, 24000195a7bbSHeiko Schocher void *out, int *out_len, int compr_type); 24019eefe2a2SStefan Roese 24029eefe2a2SStefan Roese #include "debug.h" 24039eefe2a2SStefan Roese #include "misc.h" 24049eefe2a2SStefan Roese #include "key.h" 24059eefe2a2SStefan Roese 2406ff94bc40SHeiko Schocher #ifdef __UBOOT__ 2407ff94bc40SHeiko Schocher void ubifs_umount(struct ubifs_info *c); 2408ff94bc40SHeiko Schocher #endif 24099eefe2a2SStefan Roese #endif /* !__UBIFS_H__ */ 2410