1 files changed, 0 insertions, 473 deletions

diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
index 05655841e4..f7051c96d2 100644
--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -16,15 +16,9 @@
  */
 
 #include "ubifs.h"
-#ifndef __BAREBOX__
-#include <linux/slab.h>
-#include <linux/random.h>
-#include <linux/math64.h>
-#else
 
 #include <linux/err.h>
 #include <linux/stat.h>
-#endif
 
 /*
  * Default journal size in logical eraseblocks as a percent of total
@@ -58,283 +52,6 @@
 /* Default time granularity in nanoseconds */
 #define DEFAULT_TIME_GRAN 1000000000
 
-#ifndef __BAREBOX__
-/**
- * create_default_filesystem - format empty UBI volume.
- * @c: UBIFS file-system description object
- *
- * This function creates default empty file-system. Returns zero in case of
- * success and a negative error code in case of failure.
- */
-static int create_default_filesystem(struct ubifs_info *c)
-{
-	struct ubifs_sb_node *sup;
-	struct ubifs_mst_node *mst;
-	struct ubifs_idx_node *idx;
-	struct ubifs_branch *br;
-	struct ubifs_ino_node *ino;
-	struct ubifs_cs_node *cs;
-	union ubifs_key key;
-	int err, tmp, jnl_lebs, log_lebs, max_buds, main_lebs, main_first;
-	int lpt_lebs, lpt_first, orph_lebs, big_lpt, ino_waste, sup_flags = 0;
-	int min_leb_cnt = UBIFS_MIN_LEB_CNT;
-	long long tmp64, main_bytes;
-	__le64 tmp_le64;
-
-	/* Some functions called from here depend on the @c->key_len filed */
-	c->key_len = UBIFS_SK_LEN;
-
-	/*
-	 * First of all, we have to calculate default file-system geometry -
-	 * log size, journal size, etc.
-	 */
-	if (c->leb_cnt < 0x7FFFFFFF / DEFAULT_JNL_PERCENT)
-		/* We can first multiply then divide and have no overflow */
-		jnl_lebs = c->leb_cnt * DEFAULT_JNL_PERCENT / 100;
-	else
-		jnl_lebs = (c->leb_cnt / 100) * DEFAULT_JNL_PERCENT;
-
-	if (jnl_lebs < UBIFS_MIN_JNL_LEBS)
-		jnl_lebs = UBIFS_MIN_JNL_LEBS;
-	if (jnl_lebs * c->leb_size > DEFAULT_MAX_JNL)
-		jnl_lebs = DEFAULT_MAX_JNL / c->leb_size;
-
-	/*
-	 * The log should be large enough to fit reference nodes for all bud
-	 * LEBs. Because buds do not have to start from the beginning of LEBs
-	 * (half of the LEB may contain committed data), the log should
-	 * generally be larger, make it twice as large.
-	 */
-	tmp = 2 * (c->ref_node_alsz * jnl_lebs) + c->leb_size - 1;
-	log_lebs = tmp / c->leb_size;
-	/* Plus one LEB reserved for commit */
-	log_lebs += 1;
-	if (c->leb_cnt - min_leb_cnt > 8) {
-		/* And some extra space to allow writes while committing */
-		log_lebs += 1;
-		min_leb_cnt += 1;
-	}
-
-	max_buds = jnl_lebs - log_lebs;
-	if (max_buds < UBIFS_MIN_BUD_LEBS)
-		max_buds = UBIFS_MIN_BUD_LEBS;
-
-	/*
-	 * Orphan nodes are stored in a separate area. One node can store a lot
-	 * of orphan inode numbers, but when new orphan comes we just add a new
-	 * orphan node. At some point the nodes are consolidated into one
-	 * orphan node.
-	 */
-	orph_lebs = UBIFS_MIN_ORPH_LEBS;
-	if (c->leb_cnt - min_leb_cnt > 1)
-		/*
-		 * For debugging purposes it is better to have at least 2
-		 * orphan LEBs, because the orphan subsystem would need to do
-		 * consolidations and would be stressed more.
-		 */
-		orph_lebs += 1;
-
-	main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS - log_lebs;
-	main_lebs -= orph_lebs;
-
-	lpt_first = UBIFS_LOG_LNUM + log_lebs;
-	c->lsave_cnt = DEFAULT_LSAVE_CNT;
-	c->max_leb_cnt = c->leb_cnt;
-	err = ubifs_create_dflt_lpt(c, &main_lebs, lpt_first, &lpt_lebs,
-				    &big_lpt);
-	if (err)
-		return err;
-
-	dbg_gen("LEB Properties Tree created (LEBs %d-%d)", lpt_first,
-		lpt_first + lpt_lebs - 1);
-
-	main_first = c->leb_cnt - main_lebs;
-
-	/* Create default superblock */
-	tmp = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);
-	sup = kzalloc(tmp, GFP_KERNEL);
-	if (!sup)
-		return -ENOMEM;
-
-	tmp64 = (long long)max_buds * c->leb_size;
-	if (big_lpt)
-		sup_flags |= UBIFS_FLG_BIGLPT;
-
-	sup->ch.node_type  = UBIFS_SB_NODE;
-	sup->key_hash      = UBIFS_KEY_HASH_R5;
-	sup->flags         = cpu_to_le32(sup_flags);
-	sup->min_io_size   = cpu_to_le32(c->min_io_size);
-	sup->leb_size      = cpu_to_le32(c->leb_size);
-	sup->leb_cnt       = cpu_to_le32(c->leb_cnt);
-	sup->max_leb_cnt   = cpu_to_le32(c->max_leb_cnt);
-	sup->max_bud_bytes = cpu_to_le64(tmp64);
-	sup->log_lebs      = cpu_to_le32(log_lebs);
-	sup->lpt_lebs      = cpu_to_le32(lpt_lebs);
-	sup->orph_lebs     = cpu_to_le32(orph_lebs);
-	sup->jhead_cnt     = cpu_to_le32(DEFAULT_JHEADS_CNT);
-	sup->fanout        = cpu_to_le32(DEFAULT_FANOUT);
-	sup->lsave_cnt     = cpu_to_le32(c->lsave_cnt);
-	sup->fmt_version   = cpu_to_le32(UBIFS_FORMAT_VERSION);
-	sup->time_gran     = cpu_to_le32(DEFAULT_TIME_GRAN);
-	if (c->mount_opts.override_compr)
-		sup->default_compr = cpu_to_le16(c->mount_opts.compr_type);
-	else
-		sup->default_compr = cpu_to_le16(UBIFS_COMPR_LZO);
-
-	generate_random_uuid(sup->uuid);
-
-	main_bytes = (long long)main_lebs * c->leb_size;
-	tmp64 = div_u64(main_bytes * DEFAULT_RP_PERCENT, 100);
-	if (tmp64 > DEFAULT_MAX_RP_SIZE)
-		tmp64 = DEFAULT_MAX_RP_SIZE;
-	sup->rp_size = cpu_to_le64(tmp64);
-	sup->ro_compat_version = cpu_to_le32(UBIFS_RO_COMPAT_VERSION);
-
-	err = ubifs_write_node(c, sup, UBIFS_SB_NODE_SZ, 0, 0);
-	kfree(sup);
-	if (err)
-		return err;
-
-	dbg_gen("default superblock created at LEB 0:0");
-
-	/* Create default master node */
-	mst = kzalloc(c->mst_node_alsz, GFP_KERNEL);
-	if (!mst)
-		return -ENOMEM;
-
-	mst->ch.node_type = UBIFS_MST_NODE;
-	mst->log_lnum     = cpu_to_le32(UBIFS_LOG_LNUM);
-	mst->highest_inum = cpu_to_le64(UBIFS_FIRST_INO);
-	mst->cmt_no       = 0;
-	mst->root_lnum    = cpu_to_le32(main_first + DEFAULT_IDX_LEB);
-	mst->root_offs    = 0;
-	tmp = ubifs_idx_node_sz(c, 1);
-	mst->root_len     = cpu_to_le32(tmp);
-	mst->gc_lnum      = cpu_to_le32(main_first + DEFAULT_GC_LEB);
-	mst->ihead_lnum   = cpu_to_le32(main_first + DEFAULT_IDX_LEB);
-	mst->ihead_offs   = cpu_to_le32(ALIGN(tmp, c->min_io_size));
-	mst->index_size   = cpu_to_le64(ALIGN(tmp, 8));
-	mst->lpt_lnum     = cpu_to_le32(c->lpt_lnum);
-	mst->lpt_offs     = cpu_to_le32(c->lpt_offs);
-	mst->nhead_lnum   = cpu_to_le32(c->nhead_lnum);
-	mst->nhead_offs   = cpu_to_le32(c->nhead_offs);
-	mst->ltab_lnum    = cpu_to_le32(c->ltab_lnum);
-	mst->ltab_offs    = cpu_to_le32(c->ltab_offs);
-	mst->lsave_lnum   = cpu_to_le32(c->lsave_lnum);
-	mst->lsave_offs   = cpu_to_le32(c->lsave_offs);
-	mst->lscan_lnum   = cpu_to_le32(main_first);
-	mst->empty_lebs   = cpu_to_le32(main_lebs - 2);
-	mst->idx_lebs     = cpu_to_le32(1);
-	mst->leb_cnt      = cpu_to_le32(c->leb_cnt);
-
-	/* Calculate lprops statistics */
-	tmp64 = main_bytes;
-	tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);
-	tmp64 -= ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size);
-	mst->total_free = cpu_to_le64(tmp64);
-
-	tmp64 = ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);
-	ino_waste = ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size) -
-			  UBIFS_INO_NODE_SZ;
-	tmp64 += ino_waste;
-	tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), 8);
-	mst->total_dirty = cpu_to_le64(tmp64);
-
-	/*  The indexing LEB does not contribute to dark space */
-	tmp64 = ((long long)(c->main_lebs - 1) * c->dark_wm);
-	mst->total_dark = cpu_to_le64(tmp64);
-
-	mst->total_used = cpu_to_le64(UBIFS_INO_NODE_SZ);
-
-	err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM, 0);
-	if (err) {
-		kfree(mst);
-		return err;
-	}
-	err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM + 1,
-			       0);
-	kfree(mst);
-	if (err)
-		return err;
-
-	dbg_gen("default master node created at LEB %d:0", UBIFS_MST_LNUM);
-
-	/* Create the root indexing node */
-	tmp = ubifs_idx_node_sz(c, 1);
-	idx = kzalloc(ALIGN(tmp, c->min_io_size), GFP_KERNEL);
-	if (!idx)
-		return -ENOMEM;
-
-	c->key_fmt = UBIFS_SIMPLE_KEY_FMT;
-	c->key_hash = key_r5_hash;
-
-	idx->ch.node_type = UBIFS_IDX_NODE;
-	idx->child_cnt = cpu_to_le16(1);
-	ino_key_init(c, &key, UBIFS_ROOT_INO);
-	br = ubifs_idx_branch(c, idx, 0);
-	key_write_idx(c, &key, &br->key);
-	br->lnum = cpu_to_le32(main_first + DEFAULT_DATA_LEB);
-	br->len  = cpu_to_le32(UBIFS_INO_NODE_SZ);
-	err = ubifs_write_node(c, idx, tmp, main_first + DEFAULT_IDX_LEB, 0);
-	kfree(idx);
-	if (err)
-		return err;
-
-	dbg_gen("default root indexing node created LEB %d:0",
-		main_first + DEFAULT_IDX_LEB);
-
-	/* Create default root inode */
-	tmp = ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size);
-	ino = kzalloc(tmp, GFP_KERNEL);
-	if (!ino)
-		return -ENOMEM;
-
-	ino_key_init_flash(c, &ino->key, UBIFS_ROOT_INO);
-	ino->ch.node_type = UBIFS_INO_NODE;
-	ino->creat_sqnum = cpu_to_le64(++c->max_sqnum);
-	ino->nlink = cpu_to_le32(2);
-	tmp_le64 = cpu_to_le64(CURRENT_TIME_SEC.tv_sec);
-	ino->atime_sec   = tmp_le64;
-	ino->ctime_sec   = tmp_le64;
-	ino->mtime_sec   = tmp_le64;
-	ino->atime_nsec  = 0;
-	ino->ctime_nsec  = 0;
-	ino->mtime_nsec  = 0;
-	ino->mode = cpu_to_le32(S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
-	ino->size = cpu_to_le64(UBIFS_INO_NODE_SZ);
-
-	/* Set compression enabled by default */
-	ino->flags = cpu_to_le32(UBIFS_COMPR_FL);
-
-	err = ubifs_write_node(c, ino, UBIFS_INO_NODE_SZ,
-			       main_first + DEFAULT_DATA_LEB, 0);
-	kfree(ino);
-	if (err)
-		return err;
-
-	dbg_gen("root inode created at LEB %d:0",
-		main_first + DEFAULT_DATA_LEB);
-
-	/*
-	 * The first node in the log has to be the commit start node. This is
-	 * always the case during normal file-system operation. Write a fake
-	 * commit start node to the log.
-	 */
-	tmp = ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size);
-	cs = kzalloc(tmp, GFP_KERNEL);
-	if (!cs)
-		return -ENOMEM;
-
-	cs->ch.node_type = UBIFS_CS_NODE;
-	err = ubifs_write_node(c, cs, UBIFS_CS_NODE_SZ, UBIFS_LOG_LNUM, 0);
-	kfree(cs);
-	if (err)
-		return err;
-
-	ubifs_msg(c, "default file-system created");
-	return 0;
-}
-#endif
 
 /**
  * validate_sb - validate superblock node.
@@ -498,21 +215,6 @@ struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c)
 }
 
 /**
- * ubifs_write_sb_node - write superblock node.
- * @c: UBIFS file-system description object
- * @sup: superblock node read with 'ubifs_read_sb_node()'
- *
- * This function returns %0 on success and a negative error code on failure.
- */
-int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup)
-{
-	int len = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);
-
-	ubifs_prepare_node(c, sup, UBIFS_SB_NODE_SZ, 1);
-	return ubifs_leb_change(c, UBIFS_SB_LNUM, sup, len);
-}
-
-/**
  * ubifs_read_superblock - read superblock.
  * @c: UBIFS file-system description object
  *
@@ -526,14 +228,8 @@ int ubifs_read_superblock(struct ubifs_info *c)
 	struct ubifs_sb_node *sup;
 
 	if (c->empty) {
-#ifndef __BAREBOX__
-		err = create_default_filesystem(c);
-		if (err)
-			return err;
-#else
 		printf("No UBIFS filesystem found!\n");
 		return -1;
-#endif
 	}
 
 	sup = ubifs_read_sb_node(c);
@@ -612,13 +308,8 @@ int ubifs_read_superblock(struct ubifs_info *c)
 	c->fanout        = le32_to_cpu(sup->fanout);
 	c->lsave_cnt     = le32_to_cpu(sup->lsave_cnt);
 	c->rp_size       = le64_to_cpu(sup->rp_size);
-#ifndef __BAREBOX__
-	c->rp_uid        = make_kuid(&init_user_ns, le32_to_cpu(sup->rp_uid));
-	c->rp_gid        = make_kgid(&init_user_ns, le32_to_cpu(sup->rp_gid));
-#else
 	c->rp_uid        = le32_to_cpu(sup->rp_uid);
 	c->rp_gid        = le32_to_cpu(sup->rp_gid);
-#endif
 	sup_flags        = le32_to_cpu(sup->flags);
 	if (!c->mount_opts.override_compr)
 		c->default_compr = le16_to_cpu(sup->default_compr);
@@ -635,17 +326,6 @@ int ubifs_read_superblock(struct ubifs_info *c)
 		if (c->ro_mount)
 			dbg_mnt("Auto resizing (ro) from %d LEBs to %d LEBs",
 				c->old_leb_cnt,	c->leb_cnt);
-#ifndef __BAREBOX__
-		else {
-			dbg_mnt("Auto resizing (sb) from %d LEBs to %d LEBs",
-				c->old_leb_cnt, c->leb_cnt);
-			sup->leb_cnt = cpu_to_le32(c->leb_cnt);
-			err = ubifs_write_sb_node(c, sup);
-			if (err)
-				goto out;
-			c->old_leb_cnt = c->leb_cnt;
-		}
-#endif
 	}
 
 	c->log_bytes = (long long)c->log_lebs * c->leb_size;
@@ -663,156 +343,3 @@ out:
 	kfree(sup);
 	return err;
 }
-
-/**
- * fixup_leb - fixup/unmap an LEB containing free space.
- * @c: UBIFS file-system description object
- * @lnum: the LEB number to fix up
- * @len: number of used bytes in LEB (starting at offset 0)
- *
- * This function reads the contents of the given LEB number @lnum, then fixes
- * it up, so that empty min. I/O units in the end of LEB are actually erased on
- * flash (rather than being just all-0xff real data). If the LEB is completely
- * empty, it is simply unmapped.
- */
-static int fixup_leb(struct ubifs_info *c, int lnum, int len)
-{
-	int err;
-
-	ubifs_assert(len >= 0);
-	ubifs_assert(len % c->min_io_size == 0);
-	ubifs_assert(len < c->leb_size);
-
-	if (len == 0) {
-		dbg_mnt("unmap empty LEB %d", lnum);
-		return ubifs_leb_unmap(c, lnum);
-	}
-
-	dbg_mnt("fixup LEB %d, data len %d", lnum, len);
-	err = ubifs_leb_read(c, lnum, c->sbuf, 0, len, 1);
-	if (err)
-		return err;
-
-	return ubifs_leb_change(c, lnum, c->sbuf, len);
-}
-
-/**
- * fixup_free_space - find & remap all LEBs containing free space.
- * @c: UBIFS file-system description object
- *
- * This function walks through all LEBs in the filesystem and fiexes up those
- * containing free/empty space.
- */
-static int fixup_free_space(struct ubifs_info *c)
-{
-	int lnum, err = 0;
-	struct ubifs_lprops *lprops;
-
-	ubifs_get_lprops(c);
-
-	/* Fixup LEBs in the master area */
-	for (lnum = UBIFS_MST_LNUM; lnum < UBIFS_LOG_LNUM; lnum++) {
-		err = fixup_leb(c, lnum, c->mst_offs + c->mst_node_alsz);
-		if (err)
-			goto out;
-	}
-
-	/* Unmap unused log LEBs */
-	lnum = ubifs_next_log_lnum(c, c->lhead_lnum);
-	while (lnum != c->ltail_lnum) {
-		err = fixup_leb(c, lnum, 0);
-		if (err)
-			goto out;
-		lnum = ubifs_next_log_lnum(c, lnum);
-	}
-
-	/*
-	 * Fixup the log head which contains the only a CS node at the
-	 * beginning.
-	 */
-	err = fixup_leb(c, c->lhead_lnum,
-			ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size));
-	if (err)
-		goto out;
-
-	/* Fixup LEBs in the LPT area */
-	for (lnum = c->lpt_first; lnum <= c->lpt_last; lnum++) {
-		int free = c->ltab[lnum - c->lpt_first].free;
-
-		if (free > 0) {
-			err = fixup_leb(c, lnum, c->leb_size - free);
-			if (err)
-				goto out;
-		}
-	}
-
-	/* Unmap LEBs in the orphans area */
-	for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
-		err = fixup_leb(c, lnum, 0);
-		if (err)
-			goto out;
-	}
-
-	/* Fixup LEBs in the main area */
-	for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {
-		lprops = ubifs_lpt_lookup(c, lnum);
-		if (IS_ERR(lprops)) {
-			err = PTR_ERR(lprops);
-			goto out;
-		}
-
-		if (lprops->free > 0) {
-			err = fixup_leb(c, lnum, c->leb_size - lprops->free);
-			if (err)
-				goto out;
-		}
-	}
-
-out:
-	ubifs_release_lprops(c);
-	return err;
-}
-
-/**
- * ubifs_fixup_free_space - find & fix all LEBs with free space.
- * @c: UBIFS file-system description object
- *
- * This function fixes up LEBs containing free space on first mount, if the
- * appropriate flag was set when the FS was created. Each LEB with one or more
- * empty min. I/O unit (i.e. free-space-count > 0) is re-written, to make sure
- * the free space is actually erased. E.g., this is necessary for some NAND
- * chips, since the free space may have been programmed like real "0xff" data
- * (generating a non-0xff ECC), causing future writes to the not-really-erased
- * NAND pages to behave badly. After the space is fixed up, the superblock flag
- * is cleared, so that this is skipped for all future mounts.
- */
-int ubifs_fixup_free_space(struct ubifs_info *c)
-{
-	int err;
-	struct ubifs_sb_node *sup;
-
-	ubifs_assert(c->space_fixup);
-	ubifs_assert(!c->ro_mount);
-
-	ubifs_msg(c, "start fixing up free space");
-
-	err = fixup_free_space(c);
-	if (err)
-		return err;
-
-	sup = ubifs_read_sb_node(c);
-	if (IS_ERR(sup))
-		return PTR_ERR(sup);
-
-	/* Free-space fixup is no longer required */
-	c->space_fixup = 0;
-	sup->flags &= cpu_to_le32(~UBIFS_FLG_SPACE_FIXUP);
-
-	err = ubifs_write_sb_node(c, sup);
-	kfree(sup);
-	if (err)
-		return err;
-
-	ubifs_msg(c, "free space fixup complete");
-	return err;
-}