added boot script files to repository

1 files changed, 0 insertions, 1200 deletions

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
deleted file mode 100644
index 63b2164..0000000
--- a/fs/ubifs/super.c
+++ /dev/null
@@ -1,1200 +0,0 @@
-/*
- * This file is part of UBIFS.
- *
- * Copyright (C) 2006-2008 Nokia Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Authors: Artem Bityutskiy (Битюцкий Артём)
- *          Adrian Hunter
- */
-
-/*
- * This file implements UBIFS initialization and VFS superblock operations. Some
- * initialization stuff which is rather large and complex is placed at
- * corresponding subsystems, but most of it is here.
- */
-
-#include "ubifs.h"
-#include <linux/math64.h>
-
-#define INODE_LOCKED_MAX	64
-
-struct super_block *ubifs_sb;
-static struct inode *inodes_locked_down[INODE_LOCKED_MAX];
-
-/* shrinker.c */
-
-/* List of all UBIFS file-system instances */
-struct list_head ubifs_infos;
-
-/* linux/fs/super.c */
-
-static int sb_set(struct super_block *sb, void *data)
-{
-	dev_t *dev = data;
-
-	sb->s_dev = *dev;
-	return 0;
-}
-
-/**
- *	sget	-	find or create a superblock
- *	@type:	filesystem type superblock should belong to
- *	@test:	comparison callback
- *	@set:	setup callback
- *	@data:	argument to each of them
- */
-struct super_block *sget(struct file_system_type *type,
-			int (*test)(struct super_block *,void *),
-			int (*set)(struct super_block *,void *),
-			void *data)
-{
-	struct super_block *s = NULL;
-	int err;
-
-	s = kzalloc(sizeof(struct super_block),  GFP_USER);
-	if (!s) {
-		err = -ENOMEM;
-		return ERR_PTR(err);
-	}
-
-	INIT_LIST_HEAD(&s->s_instances);
-	INIT_LIST_HEAD(&s->s_inodes);
-	s->s_time_gran = 1000000000;
-
-	err = set(s, data);
-	if (err) {
-		return ERR_PTR(err);
-	}
-	s->s_type = type;
-	strncpy(s->s_id, type->name, sizeof(s->s_id));
-	list_add(&s->s_instances, &type->fs_supers);
-	return s;
-}
-
-/**
- * validate_inode - validate inode.
- * @c: UBIFS file-system description object
- * @inode: the inode to validate
- *
- * This is a helper function for 'ubifs_iget()' which validates various fields
- * of a newly built inode to make sure they contain sane values and prevent
- * possible vulnerabilities. Returns zero if the inode is all right and
- * a non-zero error code if not.
- */
-static int validate_inode(struct ubifs_info *c, const struct inode *inode)
-{
-	int err;
-	const struct ubifs_inode *ui = ubifs_inode(inode);
-
-	if (inode->i_size > c->max_inode_sz) {
-		ubifs_err("inode is too large (%lld)",
-			  (long long)inode->i_size);
-		return 1;
-	}
-
-	if (ui->compr_type < 0 || ui->compr_type >= UBIFS_COMPR_TYPES_CNT) {
-		ubifs_err("unknown compression type %d", ui->compr_type);
-		return 2;
-	}
-
-	if (ui->data_len < 0 || ui->data_len > UBIFS_MAX_INO_DATA)
-		return 4;
-
-	if (!ubifs_compr_present(ui->compr_type)) {
-		ubifs_warn("inode %lu uses '%s' compression, but it was not "
-			   "compiled in", inode->i_ino,
-			   ubifs_compr_name(ui->compr_type));
-	}
-
-	err = dbg_check_dir_size(c, inode);
-	return err;
-}
-
-struct inode *iget_locked(struct super_block *sb, unsigned long ino)
-{
-	struct inode *inode;
-
-	inode = (struct inode *)malloc(sizeof(struct ubifs_inode));
-	if (inode) {
-		inode->i_ino = ino;
-		inode->i_sb = sb;
-		list_add(&inode->i_sb_list, &sb->s_inodes);
-		inode->i_state = I_LOCK | I_NEW;
-	}
-
-	return inode;
-}
-
-int ubifs_iput(struct inode *inode)
-{
-	list_del_init(&inode->i_sb_list);
-
-	free(inode);
-	return 0;
-}
-
-/*
- * Lock (save) inode in inode array for readback after recovery
- */
-void iput(struct inode *inode)
-{
-	int i;
-	struct inode *ino;
-
-	/*
-	 * Search end of list
-	 */
-	for (i = 0; i < INODE_LOCKED_MAX; i++) {
-		if (inodes_locked_down[i] == NULL)
-			break;
-	}
-
-	if (i >= INODE_LOCKED_MAX) {
-		ubifs_err("Error, can't lock (save) more inodes while recovery!!!");
-		return;
-	}
-
-	/*
-	 * Allocate and use new inode
-	 */
-	ino = (struct inode *)malloc(sizeof(struct ubifs_inode));
-	memcpy(ino, inode, sizeof(struct ubifs_inode));
-
-	/*
-	 * Finally save inode in array
-	 */
-	inodes_locked_down[i] = ino;
-}
-
-struct inode *ubifs_iget(struct super_block *sb, unsigned long inum)
-{
-	int err;
-	union ubifs_key key;
-	struct ubifs_ino_node *ino;
-	struct ubifs_info *c = sb->s_fs_info;
-	struct inode *inode;
-	struct ubifs_inode *ui;
-	int i;
-
-	dbg_gen("inode %lu", inum);
-
-	/*
-	 * U-Boot special handling of locked down inodes via recovery
-	 * e.g. ubifs_recover_size()
-	 */
-	for (i = 0; i < INODE_LOCKED_MAX; i++) {
-		/*
-		 * Exit on last entry (NULL), inode not found in list
-		 */
-		if (inodes_locked_down[i] == NULL)
-			break;
-
-		if (inodes_locked_down[i]->i_ino == inum) {
-			/*
-			 * We found the locked down inode in our array,
-			 * so just return this pointer instead of creating
-			 * a new one.
-			 */
-			return inodes_locked_down[i];
-		}
-	}
-
-	inode = iget_locked(sb, inum);
-	if (!inode)
-		return ERR_PTR(-ENOMEM);
-	if (!(inode->i_state & I_NEW))
-		return inode;
-	ui = ubifs_inode(inode);
-
-	ino = kmalloc(UBIFS_MAX_INO_NODE_SZ, GFP_NOFS);
-	if (!ino) {
-		err = -ENOMEM;
-		goto out;
-	}
-
-	ino_key_init(c, &key, inode->i_ino);
-
-	err = ubifs_tnc_lookup(c, &key, ino);
-	if (err)
-		goto out_ino;
-
-	inode->i_flags |= (S_NOCMTIME | S_NOATIME);
-	inode->i_nlink = le32_to_cpu(ino->nlink);
-	inode->i_uid   = le32_to_cpu(ino->uid);
-	inode->i_gid   = le32_to_cpu(ino->gid);
-	inode->i_atime.tv_sec  = (int64_t)le64_to_cpu(ino->atime_sec);
-	inode->i_atime.tv_nsec = le32_to_cpu(ino->atime_nsec);
-	inode->i_mtime.tv_sec  = (int64_t)le64_to_cpu(ino->mtime_sec);
-	inode->i_mtime.tv_nsec = le32_to_cpu(ino->mtime_nsec);
-	inode->i_ctime.tv_sec  = (int64_t)le64_to_cpu(ino->ctime_sec);
-	inode->i_ctime.tv_nsec = le32_to_cpu(ino->ctime_nsec);
-	inode->i_mode = le32_to_cpu(ino->mode);
-	inode->i_size = le64_to_cpu(ino->size);
-
-	ui->data_len    = le32_to_cpu(ino->data_len);
-	ui->flags       = le32_to_cpu(ino->flags);
-	ui->compr_type  = le16_to_cpu(ino->compr_type);
-	ui->creat_sqnum = le64_to_cpu(ino->creat_sqnum);
-	ui->synced_i_size = ui->ui_size = inode->i_size;
-
-	err = validate_inode(c, inode);
-	if (err)
-		goto out_invalid;
-
-	if ((inode->i_mode & S_IFMT) == S_IFLNK) {
-		if (ui->data_len <= 0 || ui->data_len > UBIFS_MAX_INO_DATA) {
-			err = 12;
-			goto out_invalid;
-		}
-		ui->data = kmalloc(ui->data_len + 1, GFP_NOFS);
-		if (!ui->data) {
-			err = -ENOMEM;
-			goto out_ino;
-		}
-		memcpy(ui->data, ino->data, ui->data_len);
-		((char *)ui->data)[ui->data_len] = '\0';
-	}
-
-	kfree(ino);
-	inode->i_state &= ~(I_LOCK | I_NEW);
-	return inode;
-
-out_invalid:
-	ubifs_err("inode %lu validation failed, error %d", inode->i_ino, err);
-	dbg_dump_node(c, ino);
-	dbg_dump_inode(c, inode);
-	err = -EINVAL;
-out_ino:
-	kfree(ino);
-out:
-	ubifs_err("failed to read inode %lu, error %d", inode->i_ino, err);
-	return ERR_PTR(err);
-}
-
-/**
- * init_constants_early - initialize UBIFS constants.
- * @c: UBIFS file-system description object
- *
- * This function initialize UBIFS constants which do not need the superblock to
- * be read. It also checks that the UBI volume satisfies basic UBIFS
- * requirements. Returns zero in case of success and a negative error code in
- * case of failure.
- */
-static int init_constants_early(struct ubifs_info *c)
-{
-	if (c->vi.corrupted) {
-		ubifs_warn("UBI volume is corrupted - read-only mode");
-		c->ro_media = 1;
-	}
-
-	if (c->di.ro_mode) {
-		ubifs_msg("read-only UBI device");
-		c->ro_media = 1;
-	}
-
-	if (c->vi.vol_type == UBI_STATIC_VOLUME) {
-		ubifs_msg("static UBI volume - read-only mode");
-		c->ro_media = 1;
-	}
-
-	c->leb_cnt = c->vi.size;
-	c->leb_size = c->vi.usable_leb_size;
-	c->half_leb_size = c->leb_size / 2;
-	c->min_io_size = c->di.min_io_size;
-	c->min_io_shift = fls(c->min_io_size) - 1;
-
-	if (c->leb_size < UBIFS_MIN_LEB_SZ) {
-		ubifs_err("too small LEBs (%d bytes), min. is %d bytes",
-			  c->leb_size, UBIFS_MIN_LEB_SZ);
-		return -EINVAL;
-	}
-
-	if (c->leb_cnt < UBIFS_MIN_LEB_CNT) {
-		ubifs_err("too few LEBs (%d), min. is %d",
-			  c->leb_cnt, UBIFS_MIN_LEB_CNT);
-		return -EINVAL;
-	}
-
-	if (!is_power_of_2(c->min_io_size)) {
-		ubifs_err("bad min. I/O size %d", c->min_io_size);
-		return -EINVAL;
-	}
-
-	/*
-	 * UBIFS aligns all node to 8-byte boundary, so to make function in
-	 * io.c simpler, assume minimum I/O unit size to be 8 bytes if it is
-	 * less than 8.
-	 */
-	if (c->min_io_size < 8) {
-		c->min_io_size = 8;
-		c->min_io_shift = 3;
-	}
-
-	c->ref_node_alsz = ALIGN(UBIFS_REF_NODE_SZ, c->min_io_size);
-	c->mst_node_alsz = ALIGN(UBIFS_MST_NODE_SZ, c->min_io_size);
-
-	/*
-	 * Initialize node length ranges which are mostly needed for node
-	 * length validation.
-	 */
-	c->ranges[UBIFS_PAD_NODE].len  = UBIFS_PAD_NODE_SZ;
-	c->ranges[UBIFS_SB_NODE].len   = UBIFS_SB_NODE_SZ;
-	c->ranges[UBIFS_MST_NODE].len  = UBIFS_MST_NODE_SZ;
-	c->ranges[UBIFS_REF_NODE].len  = UBIFS_REF_NODE_SZ;
-	c->ranges[UBIFS_TRUN_NODE].len = UBIFS_TRUN_NODE_SZ;
-	c->ranges[UBIFS_CS_NODE].len   = UBIFS_CS_NODE_SZ;
-
-	c->ranges[UBIFS_INO_NODE].min_len  = UBIFS_INO_NODE_SZ;
-	c->ranges[UBIFS_INO_NODE].max_len  = UBIFS_MAX_INO_NODE_SZ;
-	c->ranges[UBIFS_ORPH_NODE].min_len =
-				UBIFS_ORPH_NODE_SZ + sizeof(__le64);
-	c->ranges[UBIFS_ORPH_NODE].max_len = c->leb_size;
-	c->ranges[UBIFS_DENT_NODE].min_len = UBIFS_DENT_NODE_SZ;
-	c->ranges[UBIFS_DENT_NODE].max_len = UBIFS_MAX_DENT_NODE_SZ;
-	c->ranges[UBIFS_XENT_NODE].min_len = UBIFS_XENT_NODE_SZ;
-	c->ranges[UBIFS_XENT_NODE].max_len = UBIFS_MAX_XENT_NODE_SZ;
-	c->ranges[UBIFS_DATA_NODE].min_len = UBIFS_DATA_NODE_SZ;
-	c->ranges[UBIFS_DATA_NODE].max_len = UBIFS_MAX_DATA_NODE_SZ;
-	/*
-	 * Minimum indexing node size is amended later when superblock is
-	 * read and the key length is known.
-	 */
-	c->ranges[UBIFS_IDX_NODE].min_len = UBIFS_IDX_NODE_SZ + UBIFS_BRANCH_SZ;
-	/*
-	 * Maximum indexing node size is amended later when superblock is
-	 * read and the fanout is known.
-	 */
-	c->ranges[UBIFS_IDX_NODE].max_len = INT_MAX;
-
-	/*
-	 * Initialize dead and dark LEB space watermarks. See gc.c for comments
-	 * about these values.
-	 */
-	c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size);
-	c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size);
-
-	/*
-	 * Calculate how many bytes would be wasted at the end of LEB if it was
-	 * fully filled with data nodes of maximum size. This is used in
-	 * calculations when reporting free space.
-	 */
-	c->leb_overhead = c->leb_size % UBIFS_MAX_DATA_NODE_SZ;
-
-	return 0;
-}
-
-/*
- * init_constants_sb - initialize UBIFS constants.
- * @c: UBIFS file-system description object
- *
- * This is a helper function which initializes various UBIFS constants after
- * the superblock has been read. It also checks various UBIFS parameters and
- * makes sure they are all right. Returns zero in case of success and a
- * negative error code in case of failure.
- */
-static int init_constants_sb(struct ubifs_info *c)
-{
-	int tmp, err;
-	long long tmp64;
-
-	c->main_bytes = (long long)c->main_lebs * c->leb_size;
-	c->max_znode_sz = sizeof(struct ubifs_znode) +
-				c->fanout * sizeof(struct ubifs_zbranch);
-
-	tmp = ubifs_idx_node_sz(c, 1);
-	c->ranges[UBIFS_IDX_NODE].min_len = tmp;
-	c->min_idx_node_sz = ALIGN(tmp, 8);
-
-	tmp = ubifs_idx_node_sz(c, c->fanout);
-	c->ranges[UBIFS_IDX_NODE].max_len = tmp;
-	c->max_idx_node_sz = ALIGN(tmp, 8);
-
-	/* Make sure LEB size is large enough to fit full commit */
-	tmp = UBIFS_CS_NODE_SZ + UBIFS_REF_NODE_SZ * c->jhead_cnt;
-	tmp = ALIGN(tmp, c->min_io_size);
-	if (tmp > c->leb_size) {
-		dbg_err("too small LEB size %d, at least %d needed",
-			c->leb_size, tmp);
-		return -EINVAL;
-	}
-
-	/*
-	 * Make sure that the log is large enough to fit reference nodes for
-	 * all buds plus one reserved LEB.
-	 */
-	tmp64 = c->max_bud_bytes + c->leb_size - 1;
-	c->max_bud_cnt = div_u64(tmp64, c->leb_size);
-	tmp = (c->ref_node_alsz * c->max_bud_cnt + c->leb_size - 1);
-	tmp /= c->leb_size;
-	tmp += 1;
-	if (c->log_lebs < tmp) {
-		dbg_err("too small log %d LEBs, required min. %d LEBs",
-			c->log_lebs, tmp);
-		return -EINVAL;
-	}
-
-	/*
-	 * When budgeting we assume worst-case scenarios when the pages are not
-	 * be compressed and direntries are of the maximum size.
-	 *
-	 * Note, data, which may be stored in inodes is budgeted separately, so
-	 * it is not included into 'c->inode_budget'.
-	 */
-	c->page_budget = UBIFS_MAX_DATA_NODE_SZ * UBIFS_BLOCKS_PER_PAGE;
-	c->inode_budget = UBIFS_INO_NODE_SZ;
-	c->dent_budget = UBIFS_MAX_DENT_NODE_SZ;
-
-	/*
-	 * When the amount of flash space used by buds becomes
-	 * 'c->max_bud_bytes', UBIFS just blocks all writers and starts commit.
-	 * The writers are unblocked when the commit is finished. To avoid
-	 * writers to be blocked UBIFS initiates background commit in advance,
-	 * when number of bud bytes becomes above the limit defined below.
-	 */
-	c->bg_bud_bytes = (c->max_bud_bytes * 13) >> 4;
-
-	/*
-	 * Ensure minimum journal size. All the bytes in the journal heads are
-	 * considered to be used, when calculating the current journal usage.
-	 * Consequently, if the journal is too small, UBIFS will treat it as
-	 * always full.
-	 */
-	tmp64 = (long long)(c->jhead_cnt + 1) * c->leb_size + 1;
-	if (c->bg_bud_bytes < tmp64)
-		c->bg_bud_bytes = tmp64;
-	if (c->max_bud_bytes < tmp64 + c->leb_size)
-		c->max_bud_bytes = tmp64 + c->leb_size;
-
-	err = ubifs_calc_lpt_geom(c);
-	if (err)
-		return err;
-
-	return 0;
-}
-
-/*
- * init_constants_master - initialize UBIFS constants.
- * @c: UBIFS file-system description object
- *
- * This is a helper function which initializes various UBIFS constants after
- * the master node has been read. It also checks various UBIFS parameters and
- * makes sure they are all right.
- */
-static void init_constants_master(struct ubifs_info *c)
-{
-	long long tmp64;
-
-	c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
-
-	/*
-	 * Calculate total amount of FS blocks. This number is not used
-	 * internally because it does not make much sense for UBIFS, but it is
-	 * necessary to report something for the 'statfs()' call.
-	 *
-	 * Subtract the LEB reserved for GC, the LEB which is reserved for
-	 * deletions, minimum LEBs for the index, and assume only one journal
-	 * head is available.
-	 */
-	tmp64 = c->main_lebs - 1 - 1 - MIN_INDEX_LEBS - c->jhead_cnt + 1;
-	tmp64 *= (long long)c->leb_size - c->leb_overhead;
-	tmp64 = ubifs_reported_space(c, tmp64);
-	c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT;
-}
-
-/**
- * free_orphans - free orphans.
- * @c: UBIFS file-system description object
- */
-static void free_orphans(struct ubifs_info *c)
-{
-	struct ubifs_orphan *orph;
-
-	while (c->orph_dnext) {
-		orph = c->orph_dnext;
-		c->orph_dnext = orph->dnext;
-		list_del(&orph->list);
-		kfree(orph);
-	}
-
-	while (!list_empty(&c->orph_list)) {
-		orph = list_entry(c->orph_list.next, struct ubifs_orphan, list);
-		list_del(&orph->list);
-		kfree(orph);
-		dbg_err("orphan list not empty at unmount");
-	}
-
-	vfree(c->orph_buf);
-	c->orph_buf = NULL;
-}
-
-/**
- * check_volume_empty - check if the UBI volume is empty.
- * @c: UBIFS file-system description object
- *
- * This function checks if the UBIFS volume is empty by looking if its LEBs are
- * mapped or not. The result of checking is stored in the @c->empty variable.
- * Returns zero in case of success and a negative error code in case of
- * failure.
- */
-static int check_volume_empty(struct ubifs_info *c)
-{
-	int lnum, err;
-
-	c->empty = 1;
-	for (lnum = 0; lnum < c->leb_cnt; lnum++) {
-		err = ubi_is_mapped(c->ubi, lnum);
-		if (unlikely(err < 0))
-			return err;
-		if (err == 1) {
-			c->empty = 0;
-			break;
-		}
-
-		cond_resched();
-	}
-
-	return 0;
-}
-
-/**
- * mount_ubifs - mount UBIFS file-system.
- * @c: UBIFS file-system description object
- *
- * This function mounts UBIFS file system. Returns zero in case of success and
- * a negative error code in case of failure.
- *
- * Note, the function does not de-allocate resources it it fails half way
- * through, and the caller has to do this instead.
- */
-static int mount_ubifs(struct ubifs_info *c)
-{
-	struct super_block *sb = c->vfs_sb;
-	int err, mounted_read_only = (sb->s_flags & MS_RDONLY);
-	long long x;
-	size_t sz;
-
-	err = init_constants_early(c);
-	if (err)
-		return err;
-
-	err = ubifs_debugging_init(c);
-	if (err)
-		return err;
-
-	err = check_volume_empty(c);
-	if (err)
-		goto out_free;
-
-	if (c->empty && (mounted_read_only || c->ro_media)) {
-		/*
-		 * This UBI volume is empty, and read-only, or the file system
-		 * is mounted read-only - we cannot format it.
-		 */
-		ubifs_err("can't format empty UBI volume: read-only %s",
-			  c->ro_media ? "UBI volume" : "mount");
-		err = -EROFS;
-		goto out_free;
-	}
-
-	if (c->ro_media && !mounted_read_only) {
-		ubifs_err("cannot mount read-write - read-only media");
-		err = -EROFS;
-		goto out_free;
-	}
-
-	/*
-	 * The requirement for the buffer is that it should fit indexing B-tree
-	 * height amount of integers. We assume the height if the TNC tree will
-	 * never exceed 64.
-	 */
-	err = -ENOMEM;
-	c->bottom_up_buf = kmalloc(BOTTOM_UP_HEIGHT * sizeof(int), GFP_KERNEL);
-	if (!c->bottom_up_buf)
-		goto out_free;
-
-	c->sbuf = vmalloc(c->leb_size);
-	if (!c->sbuf)
-		goto out_free;
-
-	/*
-	 * We have to check all CRCs, even for data nodes, when we mount the FS
-	 * (specifically, when we are replaying).
-	 */
-	c->always_chk_crc = 1;
-
-	err = ubifs_read_superblock(c);
-	if (err)
-		goto out_free;
-
-	/*
-	 * Make sure the compressor which is set as default in the superblock
-	 * or overridden by mount options is actually compiled in.
-	 */
-	if (!ubifs_compr_present(c->default_compr)) {
-		ubifs_err("'compressor \"%s\" is not compiled in",
-			  ubifs_compr_name(c->default_compr));
-		goto out_free;
-	}
-
-	dbg_failure_mode_registration(c);
-
-	err = init_constants_sb(c);
-	if (err)
-		goto out_free;
-
-	sz = ALIGN(c->max_idx_node_sz, c->min_io_size);
-	sz = ALIGN(sz + c->max_idx_node_sz, c->min_io_size);
-	c->cbuf = kmalloc(sz, GFP_NOFS);
-	if (!c->cbuf) {
-		err = -ENOMEM;
-		goto out_free;
-	}
-
-	sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id);
-
-	err = ubifs_read_master(c);
-	if (err)
-		goto out_master;
-
-	init_constants_master(c);
-
-	if ((c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY)) != 0) {
-		ubifs_msg("recovery needed");
-		c->need_recovery = 1;
-	}
-
-	err = ubifs_lpt_init(c, 1, !mounted_read_only);
-	if (err)
-		goto out_lpt;
-
-	err = dbg_check_idx_size(c, c->old_idx_sz);
-	if (err)
-		goto out_lpt;
-
-	err = ubifs_replay_journal(c);
-	if (err)
-		goto out_journal;
-
-	err = ubifs_mount_orphans(c, c->need_recovery, mounted_read_only);
-	if (err)
-		goto out_orphans;
-
-	if (c->need_recovery) {
-		err = ubifs_recover_size(c);
-		if (err)
-			goto out_orphans;
-	}
-
-	spin_lock(&ubifs_infos_lock);
-	list_add_tail(&c->infos_list, &ubifs_infos);
-	spin_unlock(&ubifs_infos_lock);
-
-	if (c->need_recovery) {
-		if (mounted_read_only)
-			ubifs_msg("recovery deferred");
-		else {
-			c->need_recovery = 0;
-			ubifs_msg("recovery completed");
-		}
-	}
-
-	err = dbg_check_filesystem(c);
-	if (err)
-		goto out_infos;
-
-	c->always_chk_crc = 0;
-
-	ubifs_msg("mounted UBI device %d, volume %d, name \"%s\"",
-		  c->vi.ubi_num, c->vi.vol_id, c->vi.name);
-	if (mounted_read_only)
-		ubifs_msg("mounted read-only");
-	x = (long long)c->main_lebs * c->leb_size;
-	ubifs_msg("file system size:   %lld bytes (%lld KiB, %lld MiB, %d "
-		  "LEBs)", x, x >> 10, x >> 20, c->main_lebs);
-	x = (long long)c->log_lebs * c->leb_size + c->max_bud_bytes;
-	ubifs_msg("journal size:       %lld bytes (%lld KiB, %lld MiB, %d "
-		  "LEBs)", x, x >> 10, x >> 20, c->log_lebs + c->max_bud_cnt);
-	ubifs_msg("media format:       w%d/r%d (latest is w%d/r%d)",
-		  c->fmt_version, c->ro_compat_version,
-		  UBIFS_FORMAT_VERSION, UBIFS_RO_COMPAT_VERSION);
-	ubifs_msg("default compressor: %s", ubifs_compr_name(c->default_compr));
-	ubifs_msg("reserved for root:  %llu bytes (%llu KiB)",
-		c->report_rp_size, c->report_rp_size >> 10);
-
-	dbg_msg("compiled on:         " __DATE__ " at " __TIME__);
-	dbg_msg("min. I/O unit size:  %d bytes", c->min_io_size);
-	dbg_msg("LEB size:            %d bytes (%d KiB)",
-		c->leb_size, c->leb_size >> 10);
-	dbg_msg("data journal heads:  %d",
-		c->jhead_cnt - NONDATA_JHEADS_CNT);
-	dbg_msg("UUID:                %02X%02X%02X%02X-%02X%02X"
-	       "-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
-	       c->uuid[0], c->uuid[1], c->uuid[2], c->uuid[3],
-	       c->uuid[4], c->uuid[5], c->uuid[6], c->uuid[7],
-	       c->uuid[8], c->uuid[9], c->uuid[10], c->uuid[11],
-	       c->uuid[12], c->uuid[13], c->uuid[14], c->uuid[15]);
-	dbg_msg("big_lpt              %d", c->big_lpt);
-	dbg_msg("log LEBs:            %d (%d - %d)",
-		c->log_lebs, UBIFS_LOG_LNUM, c->log_last);
-	dbg_msg("LPT area LEBs:       %d (%d - %d)",
-		c->lpt_lebs, c->lpt_first, c->lpt_last);
-	dbg_msg("orphan area LEBs:    %d (%d - %d)",
-		c->orph_lebs, c->orph_first, c->orph_last);
-	dbg_msg("main area LEBs:      %d (%d - %d)",
-		c->main_lebs, c->main_first, c->leb_cnt - 1);
-	dbg_msg("index LEBs:          %d", c->lst.idx_lebs);
-	dbg_msg("total index bytes:   %lld (%lld KiB, %lld MiB)",
-		c->old_idx_sz, c->old_idx_sz >> 10, c->old_idx_sz >> 20);
-	dbg_msg("key hash type:       %d", c->key_hash_type);
-	dbg_msg("tree fanout:         %d", c->fanout);
-	dbg_msg("reserved GC LEB:     %d", c->gc_lnum);
-	dbg_msg("first main LEB:      %d", c->main_first);
-	dbg_msg("max. znode size      %d", c->max_znode_sz);
-	dbg_msg("max. index node size %d", c->max_idx_node_sz);
-	dbg_msg("node sizes:          data %zu, inode %zu, dentry %zu",
-		UBIFS_DATA_NODE_SZ, UBIFS_INO_NODE_SZ, UBIFS_DENT_NODE_SZ);
-	dbg_msg("node sizes:          trun %zu, sb %zu, master %zu",
-		UBIFS_TRUN_NODE_SZ, UBIFS_SB_NODE_SZ, UBIFS_MST_NODE_SZ);
-	dbg_msg("node sizes:          ref %zu, cmt. start %zu, orph %zu",
-		UBIFS_REF_NODE_SZ, UBIFS_CS_NODE_SZ, UBIFS_ORPH_NODE_SZ);
-	dbg_msg("max. node sizes:     data %zu, inode %zu dentry %zu",
-	        UBIFS_MAX_DATA_NODE_SZ, UBIFS_MAX_INO_NODE_SZ,
-		UBIFS_MAX_DENT_NODE_SZ);
-	dbg_msg("dead watermark:      %d", c->dead_wm);
-	dbg_msg("dark watermark:      %d", c->dark_wm);
-	dbg_msg("LEB overhead:        %d", c->leb_overhead);
-	x = (long long)c->main_lebs * c->dark_wm;
-	dbg_msg("max. dark space:     %lld (%lld KiB, %lld MiB)",
-		x, x >> 10, x >> 20);
-	dbg_msg("maximum bud bytes:   %lld (%lld KiB, %lld MiB)",
-		c->max_bud_bytes, c->max_bud_bytes >> 10,
-		c->max_bud_bytes >> 20);
-	dbg_msg("BG commit bud bytes: %lld (%lld KiB, %lld MiB)",
-		c->bg_bud_bytes, c->bg_bud_bytes >> 10,
-		c->bg_bud_bytes >> 20);
-	dbg_msg("current bud bytes    %lld (%lld KiB, %lld MiB)",
-		c->bud_bytes, c->bud_bytes >> 10, c->bud_bytes >> 20);
-	dbg_msg("max. seq. number:    %llu", c->max_sqnum);
-	dbg_msg("commit number:       %llu", c->cmt_no);
-
-	return 0;
-
-out_infos:
-	spin_lock(&ubifs_infos_lock);
-	list_del(&c->infos_list);
-	spin_unlock(&ubifs_infos_lock);
-out_orphans:
-	free_orphans(c);
-out_journal:
-out_lpt:
-	ubifs_lpt_free(c, 0);
-out_master:
-	kfree(c->mst_node);
-	kfree(c->rcvrd_mst_node);
-	if (c->bgt)
-		kthread_stop(c->bgt);
-	kfree(c->cbuf);
-out_free:
-	vfree(c->ileb_buf);
-	vfree(c->sbuf);
-	kfree(c->bottom_up_buf);
-	ubifs_debugging_exit(c);
-	return err;
-}
-
-/**
- * ubifs_umount - un-mount UBIFS file-system.
- * @c: UBIFS file-system description object
- *
- * Note, this function is called to free allocated resourced when un-mounting,
- * as well as free resources when an error occurred while we were half way
- * through mounting (error path cleanup function). So it has to make sure the
- * resource was actually allocated before freeing it.
- */
-void ubifs_umount(struct ubifs_info *c)
-{
-	dbg_gen("un-mounting UBI device %d, volume %d", c->vi.ubi_num,
-		c->vi.vol_id);
-
-	spin_lock(&ubifs_infos_lock);
-	list_del(&c->infos_list);
-	spin_unlock(&ubifs_infos_lock);
-
-	if (c->bgt)
-		kthread_stop(c->bgt);
-
-	free_orphans(c);
-	ubifs_lpt_free(c, 0);
-
-	kfree(c->cbuf);
-	kfree(c->rcvrd_mst_node);
-	kfree(c->mst_node);
-	vfree(c->ileb_buf);
-	vfree(c->sbuf);
-	kfree(c->bottom_up_buf);
-	ubifs_debugging_exit(c);
-
-	/* Finally free U-Boot's global copy of superblock */
-	free(ubifs_sb->s_fs_info);
-	free(ubifs_sb);
-}
-
-/**
- * open_ubi - parse UBI device name string and open the UBI device.
- * @name: UBI volume name
- * @mode: UBI volume open mode
- *
- * There are several ways to specify UBI volumes when mounting UBIFS:
- * o ubiX_Y    - UBI device number X, volume Y;
- * o ubiY      - UBI device number 0, volume Y;
- * o ubiX:NAME - mount UBI device X, volume with name NAME;
- * o ubi:NAME  - mount UBI device 0, volume with name NAME.
- *
- * Alternative '!' separator may be used instead of ':' (because some shells
- * like busybox may interpret ':' as an NFS host name separator). This function
- * returns ubi volume object in case of success and a negative error code in
- * case of failure.
- */
-static struct ubi_volume_desc *open_ubi(const char *name, int mode)
-{
-	int dev, vol;
-	char *endptr;
-
-	if (name[0] != 'u' || name[1] != 'b' || name[2] != 'i')
-		return ERR_PTR(-EINVAL);
-
-	/* ubi:NAME method */
-	if ((name[3] == ':' || name[3] == '!') && name[4] != '\0')
-		return ubi_open_volume_nm(0, name + 4, mode);
-
-	if (!isdigit(name[3]))
-		return ERR_PTR(-EINVAL);
-
-	dev = simple_strtoul(name + 3, &endptr, 0);
-
-	/* ubiY method */
-	if (*endptr == '\0')
-		return ubi_open_volume(0, dev, mode);
-
-	/* ubiX_Y method */
-	if (*endptr == '_' && isdigit(endptr[1])) {
-		vol = simple_strtoul(endptr + 1, &endptr, 0);
-		if (*endptr != '\0')
-			return ERR_PTR(-EINVAL);
-		return ubi_open_volume(dev, vol, mode);
-	}
-
-	/* ubiX:NAME method */
-	if ((*endptr == ':' || *endptr == '!') && endptr[1] != '\0')
-		return ubi_open_volume_nm(dev, ++endptr, mode);
-
-	return ERR_PTR(-EINVAL);
-}
-
-static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
-{
-	struct ubi_volume_desc *ubi = sb->s_fs_info;
-	struct ubifs_info *c;
-	struct inode *root;
-	int err;
-
-	c = kzalloc(sizeof(struct ubifs_info), GFP_KERNEL);
-	if (!c)
-		return -ENOMEM;
-
-	spin_lock_init(&c->cnt_lock);
-	spin_lock_init(&c->cs_lock);
-	spin_lock_init(&c->buds_lock);
-	spin_lock_init(&c->space_lock);
-	spin_lock_init(&c->orphan_lock);
-	init_rwsem(&c->commit_sem);
-	mutex_init(&c->lp_mutex);
-	mutex_init(&c->tnc_mutex);
-	mutex_init(&c->log_mutex);
-	mutex_init(&c->mst_mutex);
-	mutex_init(&c->umount_mutex);
-	init_waitqueue_head(&c->cmt_wq);
-	c->buds = RB_ROOT;
-	c->old_idx = RB_ROOT;
-	c->size_tree = RB_ROOT;
-	c->orph_tree = RB_ROOT;
-	INIT_LIST_HEAD(&c->infos_list);
-	INIT_LIST_HEAD(&c->idx_gc);
-	INIT_LIST_HEAD(&c->replay_list);
-	INIT_LIST_HEAD(&c->replay_buds);
-	INIT_LIST_HEAD(&c->uncat_list);
-	INIT_LIST_HEAD(&c->empty_list);
-	INIT_LIST_HEAD(&c->freeable_list);
-	INIT_LIST_HEAD(&c->frdi_idx_list);
-	INIT_LIST_HEAD(&c->unclean_leb_list);
-	INIT_LIST_HEAD(&c->old_buds);
-	INIT_LIST_HEAD(&c->orph_list);
-	INIT_LIST_HEAD(&c->orph_new);
-
-	c->highest_inum = UBIFS_FIRST_INO;
-	c->lhead_lnum = c->ltail_lnum = UBIFS_LOG_LNUM;
-
-	ubi_get_volume_info(ubi, &c->vi);
-	ubi_get_device_info(c->vi.ubi_num, &c->di);
-
-	/* Re-open the UBI device in read-write mode */
-	c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
-	if (IS_ERR(c->ubi)) {
-		err = PTR_ERR(c->ubi);
-		goto out_free;
-	}
-
-	c->vfs_sb = sb;
-
-	sb->s_fs_info = c;
-	sb->s_magic = UBIFS_SUPER_MAGIC;
-	sb->s_blocksize = UBIFS_BLOCK_SIZE;
-	sb->s_blocksize_bits = UBIFS_BLOCK_SHIFT;
-	sb->s_dev = c->vi.cdev;
-	sb->s_maxbytes = c->max_inode_sz = key_max_inode_size(c);
-	if (c->max_inode_sz > MAX_LFS_FILESIZE)
-		sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE;
-
-	if (c->rw_incompat) {
-		ubifs_err("the file-system is not R/W-compatible");
-		ubifs_msg("on-flash format version is w%d/r%d, but software "
-			  "only supports up to version w%d/r%d", c->fmt_version,
-			  c->ro_compat_version, UBIFS_FORMAT_VERSION,
-			  UBIFS_RO_COMPAT_VERSION);
-		return -EROFS;
-	}
-
-	mutex_lock(&c->umount_mutex);
-	err = mount_ubifs(c);
-	if (err) {
-		ubifs_assert(err < 0);
-		goto out_unlock;
-	}
-
-	/* Read the root inode */
-	root = ubifs_iget(sb, UBIFS_ROOT_INO);
-	if (IS_ERR(root)) {
-		err = PTR_ERR(root);
-		goto out_umount;
-	}
-
-	sb->s_root = NULL;
-
-	mutex_unlock(&c->umount_mutex);
-	return 0;
-
-out_umount:
-	ubifs_umount(c);
-out_unlock:
-	mutex_unlock(&c->umount_mutex);
-	ubi_close_volume(c->ubi);
-out_free:
-	kfree(c);
-	return err;
-}
-
-static int sb_test(struct super_block *sb, void *data)
-{
-	dev_t *dev = data;
-
-	return sb->s_dev == *dev;
-}
-
-static int ubifs_get_sb(struct file_system_type *fs_type, int flags,
-			const char *name, void *data, struct vfsmount *mnt)
-{
-	struct ubi_volume_desc *ubi;
-	struct ubi_volume_info vi;
-	struct super_block *sb;
-	int err;
-
-	dbg_gen("name %s, flags %#x", name, flags);
-
-	/*
-	 * Get UBI device number and volume ID. Mount it read-only so far
-	 * because this might be a new mount point, and UBI allows only one
-	 * read-write user at a time.
-	 */
-	ubi = open_ubi(name, UBI_READONLY);
-	if (IS_ERR(ubi)) {
-		ubifs_err("cannot open \"%s\", error %d",
-			  name, (int)PTR_ERR(ubi));
-		return PTR_ERR(ubi);
-	}
-	ubi_get_volume_info(ubi, &vi);
-
-	dbg_gen("opened ubi%d_%d", vi.ubi_num, vi.vol_id);
-
-	sb = sget(fs_type, &sb_test, &sb_set, &vi.cdev);
-	if (IS_ERR(sb)) {
-		err = PTR_ERR(sb);
-		goto out_close;
-	}
-
-	if (sb->s_root) {
-		/* A new mount point for already mounted UBIFS */
-		dbg_gen("this ubi volume is already mounted");
-		if ((flags ^ sb->s_flags) & MS_RDONLY) {
-			err = -EBUSY;
-			goto out_deact;
-		}
-	} else {
-		sb->s_flags = flags;
-		/*
-		 * Pass 'ubi' to 'fill_super()' in sb->s_fs_info where it is
-		 * replaced by 'c'.
-		 */
-		sb->s_fs_info = ubi;
-		err = ubifs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
-		if (err)
-			goto out_deact;
-		/* We do not support atime */
-		sb->s_flags |= MS_ACTIVE | MS_NOATIME;
-	}
-
-	/* 'fill_super()' opens ubi again so we must close it here */
-	ubi_close_volume(ubi);
-
-	ubifs_sb = sb;
-	return 0;
-
-out_deact:
-	up_write(&sb->s_umount);
-out_close:
-	ubi_close_volume(ubi);
-	return err;
-}
-
-int __init ubifs_init(void)
-{
-	int err;
-
-	BUILD_BUG_ON(sizeof(struct ubifs_ch) != 24);
-
-	/* Make sure node sizes are 8-byte aligned */
-	BUILD_BUG_ON(UBIFS_CH_SZ        & 7);
-	BUILD_BUG_ON(UBIFS_INO_NODE_SZ  & 7);
-	BUILD_BUG_ON(UBIFS_DENT_NODE_SZ & 7);
-	BUILD_BUG_ON(UBIFS_XENT_NODE_SZ & 7);
-	BUILD_BUG_ON(UBIFS_DATA_NODE_SZ & 7);
-	BUILD_BUG_ON(UBIFS_TRUN_NODE_SZ & 7);
-	BUILD_BUG_ON(UBIFS_SB_NODE_SZ   & 7);
-	BUILD_BUG_ON(UBIFS_MST_NODE_SZ  & 7);
-	BUILD_BUG_ON(UBIFS_REF_NODE_SZ  & 7);
-	BUILD_BUG_ON(UBIFS_CS_NODE_SZ   & 7);
-	BUILD_BUG_ON(UBIFS_ORPH_NODE_SZ & 7);
-
-	BUILD_BUG_ON(UBIFS_MAX_DENT_NODE_SZ & 7);
-	BUILD_BUG_ON(UBIFS_MAX_XENT_NODE_SZ & 7);
-	BUILD_BUG_ON(UBIFS_MAX_DATA_NODE_SZ & 7);
-	BUILD_BUG_ON(UBIFS_MAX_INO_NODE_SZ  & 7);
-	BUILD_BUG_ON(UBIFS_MAX_NODE_SZ      & 7);
-	BUILD_BUG_ON(MIN_WRITE_SZ           & 7);
-
-	/* Check min. node size */
-	BUILD_BUG_ON(UBIFS_INO_NODE_SZ  < MIN_WRITE_SZ);
-	BUILD_BUG_ON(UBIFS_DENT_NODE_SZ < MIN_WRITE_SZ);
-	BUILD_BUG_ON(UBIFS_XENT_NODE_SZ < MIN_WRITE_SZ);
-	BUILD_BUG_ON(UBIFS_TRUN_NODE_SZ < MIN_WRITE_SZ);
-
-	BUILD_BUG_ON(UBIFS_MAX_DENT_NODE_SZ > UBIFS_MAX_NODE_SZ);
-	BUILD_BUG_ON(UBIFS_MAX_XENT_NODE_SZ > UBIFS_MAX_NODE_SZ);
-	BUILD_BUG_ON(UBIFS_MAX_DATA_NODE_SZ > UBIFS_MAX_NODE_SZ);
-	BUILD_BUG_ON(UBIFS_MAX_INO_NODE_SZ  > UBIFS_MAX_NODE_SZ);
-
-	/* Defined node sizes */
-	BUILD_BUG_ON(UBIFS_SB_NODE_SZ  != 4096);
-	BUILD_BUG_ON(UBIFS_MST_NODE_SZ != 512);
-	BUILD_BUG_ON(UBIFS_INO_NODE_SZ != 160);
-	BUILD_BUG_ON(UBIFS_REF_NODE_SZ != 64);
-
-	/*
-	 * We use 2 bit wide bit-fields to store compression type, which should
-	 * be amended if more compressors are added. The bit-fields are:
-	 * @compr_type in 'struct ubifs_inode', @default_compr in
-	 * 'struct ubifs_info' and @compr_type in 'struct ubifs_mount_opts'.
-	 */
-	BUILD_BUG_ON(UBIFS_COMPR_TYPES_CNT > 4);
-
-	/*
-	 * We require that PAGE_CACHE_SIZE is greater-than-or-equal-to
-	 * UBIFS_BLOCK_SIZE. It is assumed that both are powers of 2.
-	 */
-	if (PAGE_CACHE_SIZE < UBIFS_BLOCK_SIZE) {
-		ubifs_err("VFS page cache size is %u bytes, but UBIFS requires"
-			  " at least 4096 bytes",
-			  (unsigned int)PAGE_CACHE_SIZE);
-		return -EINVAL;
-	}
-
-	err = -ENOMEM;
-
-	err = ubifs_compressors_init();
-	if (err)
-		goto out_shrinker;
-
-	return 0;
-
-out_shrinker:
-	return err;
-}
-
-/*
- * ubifsmount...
- */
-
-static struct file_system_type ubifs_fs_type = {
-	.name    = "ubifs",
-	.owner   = THIS_MODULE,
-	.get_sb  = ubifs_get_sb,
-};
-
-int ubifs_mount(char *vol_name)
-{
-	int flags;
-	char name[80] = "ubi:";
-	void *data;
-	struct vfsmount *mnt;
-	int ret;
-	struct ubifs_info *c;
-
-	/*
-	 * First unmount if allready mounted
-	 */
-	if (ubifs_sb)
-		ubifs_umount(ubifs_sb->s_fs_info);
-
-	INIT_LIST_HEAD(&ubifs_infos);
-	INIT_LIST_HEAD(&ubifs_fs_type.fs_supers);
-
-	/*
-	 * Mount in read-only mode
-	 */
-	flags = MS_RDONLY;
-	strcat(name, vol_name);
-	data = NULL;
-	mnt = NULL;
-	ret = ubifs_get_sb(&ubifs_fs_type, flags, name, data, mnt);
-	if (ret) {
-		printf("Error reading superblock on volume '%s'!\n", name);
-		return -1;
-	}
-
-	c = ubifs_sb->s_fs_info;
-	ubi_close_volume(c->ubi);
-
-	return 0;
-}