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- #include "ubifs.h"
- #include <linux/slab.h>
- #include <linux/math64.h>
- #include <linux/uuid.h>
- #define DEFAULT_JNL_PERCENT 5
- #define DEFAULT_MAX_JNL (32*1024*1024)
- #define DEFAULT_FANOUT 8
- #define DEFAULT_JHEADS_CNT 1
- #define DEFAULT_IDX_LEB 0
- #define DEFAULT_DATA_LEB 1
- #define DEFAULT_GC_LEB 2
- #define DEFAULT_LSAVE_CNT 256
- #define DEFAULT_RP_PERCENT 5
- #define DEFAULT_MAX_RP_SIZE (5*1024*1024)
- #define DEFAULT_TIME_GRAN 1000000000
- 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;
-
- c->key_len = UBIFS_SK_LEN;
-
- if (c->leb_cnt < 0x7FFFFFFF / DEFAULT_JNL_PERCENT)
-
- 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;
-
- tmp = 2 * (c->ref_node_alsz * jnl_lebs) + c->leb_size - 1;
- log_lebs = tmp / c->leb_size;
-
- log_lebs += 1;
- if (c->leb_cnt - min_leb_cnt > 8) {
-
- 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;
-
- orph_lebs = UBIFS_MIN_ORPH_LEBS;
- if (c->leb_cnt - min_leb_cnt > 1)
-
- 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;
-
- 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");
-
- 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);
-
- 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);
-
- 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);
-
- 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);
-
- 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);
-
- 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);
-
- 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;
- }
- static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup)
- {
- long long max_bytes;
- int err = 1, min_leb_cnt;
- if (!c->key_hash) {
- err = 2;
- goto failed;
- }
- if (sup->key_fmt != UBIFS_SIMPLE_KEY_FMT) {
- err = 3;
- goto failed;
- }
- if (le32_to_cpu(sup->min_io_size) != c->min_io_size) {
- ubifs_err(c, "min. I/O unit mismatch: %d in superblock, %d real",
- le32_to_cpu(sup->min_io_size), c->min_io_size);
- goto failed;
- }
- if (le32_to_cpu(sup->leb_size) != c->leb_size) {
- ubifs_err(c, "LEB size mismatch: %d in superblock, %d real",
- le32_to_cpu(sup->leb_size), c->leb_size);
- goto failed;
- }
- if (c->log_lebs < UBIFS_MIN_LOG_LEBS ||
- c->lpt_lebs < UBIFS_MIN_LPT_LEBS ||
- c->orph_lebs < UBIFS_MIN_ORPH_LEBS ||
- c->main_lebs < UBIFS_MIN_MAIN_LEBS) {
- err = 4;
- goto failed;
- }
-
- min_leb_cnt = UBIFS_SB_LEBS + UBIFS_MST_LEBS + c->log_lebs;
- min_leb_cnt += c->lpt_lebs + c->orph_lebs + c->jhead_cnt + 6;
- if (c->leb_cnt < min_leb_cnt || c->leb_cnt > c->vi.size) {
- ubifs_err(c, "bad LEB count: %d in superblock, %d on UBI volume, %d minimum required",
- c->leb_cnt, c->vi.size, min_leb_cnt);
- goto failed;
- }
- if (c->max_leb_cnt < c->leb_cnt) {
- ubifs_err(c, "max. LEB count %d less than LEB count %d",
- c->max_leb_cnt, c->leb_cnt);
- goto failed;
- }
- if (c->main_lebs < UBIFS_MIN_MAIN_LEBS) {
- ubifs_err(c, "too few main LEBs count %d, must be at least %d",
- c->main_lebs, UBIFS_MIN_MAIN_LEBS);
- goto failed;
- }
- max_bytes = (long long)c->leb_size * UBIFS_MIN_BUD_LEBS;
- if (c->max_bud_bytes < max_bytes) {
- ubifs_err(c, "too small journal (%lld bytes), must be at least %lld bytes",
- c->max_bud_bytes, max_bytes);
- goto failed;
- }
- max_bytes = (long long)c->leb_size * c->main_lebs;
- if (c->max_bud_bytes > max_bytes) {
- ubifs_err(c, "too large journal size (%lld bytes), only %lld bytes available in the main area",
- c->max_bud_bytes, max_bytes);
- goto failed;
- }
- if (c->jhead_cnt < NONDATA_JHEADS_CNT + 1 ||
- c->jhead_cnt > NONDATA_JHEADS_CNT + UBIFS_MAX_JHEADS) {
- err = 9;
- goto failed;
- }
- if (c->fanout < UBIFS_MIN_FANOUT ||
- ubifs_idx_node_sz(c, c->fanout) > c->leb_size) {
- err = 10;
- goto failed;
- }
- if (c->lsave_cnt < 0 || (c->lsave_cnt > DEFAULT_LSAVE_CNT &&
- c->lsave_cnt > c->max_leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS -
- c->log_lebs - c->lpt_lebs - c->orph_lebs)) {
- err = 11;
- goto failed;
- }
- if (UBIFS_SB_LEBS + UBIFS_MST_LEBS + c->log_lebs + c->lpt_lebs +
- c->orph_lebs + c->main_lebs != c->leb_cnt) {
- err = 12;
- goto failed;
- }
- if (c->default_compr >= UBIFS_COMPR_TYPES_CNT) {
- err = 13;
- goto failed;
- }
- if (c->rp_size < 0 || max_bytes < c->rp_size) {
- err = 14;
- goto failed;
- }
- if (le32_to_cpu(sup->time_gran) > 1000000000 ||
- le32_to_cpu(sup->time_gran) < 1) {
- err = 15;
- goto failed;
- }
- return 0;
- failed:
- ubifs_err(c, "bad superblock, error %d", err);
- ubifs_dump_node(c, sup);
- return -EINVAL;
- }
- struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c)
- {
- struct ubifs_sb_node *sup;
- int err;
- sup = kmalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_NOFS);
- if (!sup)
- return ERR_PTR(-ENOMEM);
- err = ubifs_read_node(c, sup, UBIFS_SB_NODE, UBIFS_SB_NODE_SZ,
- UBIFS_SB_LNUM, 0);
- if (err) {
- kfree(sup);
- return ERR_PTR(err);
- }
- return sup;
- }
- 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);
- }
- int ubifs_read_superblock(struct ubifs_info *c)
- {
- int err, sup_flags;
- struct ubifs_sb_node *sup;
- if (c->empty) {
- err = create_default_filesystem(c);
- if (err)
- return err;
- }
- sup = ubifs_read_sb_node(c);
- if (IS_ERR(sup))
- return PTR_ERR(sup);
- c->fmt_version = le32_to_cpu(sup->fmt_version);
- c->ro_compat_version = le32_to_cpu(sup->ro_compat_version);
-
- if (c->fmt_version > UBIFS_FORMAT_VERSION) {
- ubifs_assert(!c->ro_media || c->ro_mount);
- if (!c->ro_mount ||
- c->ro_compat_version > UBIFS_RO_COMPAT_VERSION) {
- ubifs_err(c, "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);
- if (c->ro_compat_version <= UBIFS_RO_COMPAT_VERSION) {
- ubifs_msg(c, "only R/O mounting is possible");
- err = -EROFS;
- } else
- err = -EINVAL;
- goto out;
- }
-
- c->rw_incompat = 1;
- }
- if (c->fmt_version < 3) {
- ubifs_err(c, "on-flash format version %d is not supported",
- c->fmt_version);
- err = -EINVAL;
- goto out;
- }
- switch (sup->key_hash) {
- case UBIFS_KEY_HASH_R5:
- c->key_hash = key_r5_hash;
- c->key_hash_type = UBIFS_KEY_HASH_R5;
- break;
- case UBIFS_KEY_HASH_TEST:
- c->key_hash = key_test_hash;
- c->key_hash_type = UBIFS_KEY_HASH_TEST;
- break;
- };
- c->key_fmt = sup->key_fmt;
- switch (c->key_fmt) {
- case UBIFS_SIMPLE_KEY_FMT:
- c->key_len = UBIFS_SK_LEN;
- break;
- default:
- ubifs_err(c, "unsupported key format");
- err = -EINVAL;
- goto out;
- }
- c->leb_cnt = le32_to_cpu(sup->leb_cnt);
- c->max_leb_cnt = le32_to_cpu(sup->max_leb_cnt);
- c->max_bud_bytes = le64_to_cpu(sup->max_bud_bytes);
- c->log_lebs = le32_to_cpu(sup->log_lebs);
- c->lpt_lebs = le32_to_cpu(sup->lpt_lebs);
- c->orph_lebs = le32_to_cpu(sup->orph_lebs);
- c->jhead_cnt = le32_to_cpu(sup->jhead_cnt) + NONDATA_JHEADS_CNT;
- 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);
- 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));
- sup_flags = le32_to_cpu(sup->flags);
- if (!c->mount_opts.override_compr)
- c->default_compr = le16_to_cpu(sup->default_compr);
- c->vfs_sb->s_time_gran = le32_to_cpu(sup->time_gran);
- memcpy(&c->uuid, &sup->uuid, 16);
- c->big_lpt = !!(sup_flags & UBIFS_FLG_BIGLPT);
- c->space_fixup = !!(sup_flags & UBIFS_FLG_SPACE_FIXUP);
-
- c->old_leb_cnt = c->leb_cnt;
- if (c->leb_cnt < c->vi.size && c->leb_cnt < c->max_leb_cnt) {
- c->leb_cnt = min_t(int, c->max_leb_cnt, c->vi.size);
- if (c->ro_mount)
- dbg_mnt("Auto resizing (ro) from %d LEBs to %d LEBs",
- c->old_leb_cnt, c->leb_cnt);
- 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;
- }
- }
- c->log_bytes = (long long)c->log_lebs * c->leb_size;
- c->log_last = UBIFS_LOG_LNUM + c->log_lebs - 1;
- c->lpt_first = UBIFS_LOG_LNUM + c->log_lebs;
- c->lpt_last = c->lpt_first + c->lpt_lebs - 1;
- c->orph_first = c->lpt_last + 1;
- c->orph_last = c->orph_first + c->orph_lebs - 1;
- c->main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS;
- c->main_lebs -= c->log_lebs + c->lpt_lebs + c->orph_lebs;
- c->main_first = c->leb_cnt - c->main_lebs;
- err = validate_sb(c, sup);
- out:
- kfree(sup);
- return err;
- }
- 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);
- }
- static int fixup_free_space(struct ubifs_info *c)
- {
- int lnum, err = 0;
- struct ubifs_lprops *lprops;
- ubifs_get_lprops(c);
-
- 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;
- }
-
- 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);
- }
-
- err = fixup_leb(c, c->lhead_lnum,
- ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size));
- if (err)
- goto out;
-
- 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;
- }
- }
-
- for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
- err = fixup_leb(c, lnum, 0);
- if (err)
- goto out;
- }
-
- 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;
- }
- 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);
-
- 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;
- }
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