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-rw-r--r--fs/ubifs/budget.c9
-rw-r--r--fs/ubifs/commit.c6
-rw-r--r--fs/ubifs/dir.c14
-rw-r--r--fs/ubifs/file.c29
-rw-r--r--fs/ubifs/journal.c4
-rw-r--r--fs/ubifs/lpt.c2
-rw-r--r--fs/ubifs/super.c17
-rw-r--r--fs/ubifs/tnc.c158
-rw-r--r--fs/ubifs/tnc_misc.c4
-rw-r--r--fs/ubifs/ubifs.h5
10 files changed, 162 insertions, 86 deletions
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index c0b84e960b20..9cb05ef9b9dd 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -212,11 +212,10 @@ long long ubifs_calc_available(const struct ubifs_info *c, int min_idx_lebs)
subtract_lebs += 1;
/*
- * The GC journal head LEB is not really accessible. And since
- * different write types go to different heads, we may count only on
- * one head's space.
+ * Since different write types go to different heads, we should
+ * reserve one leb for each head.
*/
- subtract_lebs += c->jhead_cnt - 1;
+ subtract_lebs += c->jhead_cnt;
/* We also reserve one LEB for deletions, which bypass budgeting */
subtract_lebs += 1;
@@ -403,7 +402,7 @@ static int calc_dd_growth(const struct ubifs_info *c,
dd_growth = req->dirtied_page ? c->bi.page_budget : 0;
if (req->dirtied_ino)
- dd_growth += c->bi.inode_budget << (req->dirtied_ino - 1);
+ dd_growth += c->bi.inode_budget * req->dirtied_ino;
if (req->mod_dent)
dd_growth += c->bi.dent_budget;
dd_growth += req->dirtied_ino_d;
diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index ad292c5a43a9..b5cdac9b0368 100644
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -552,11 +552,11 @@ out:
*/
int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
{
- int lnum, offs, len, err = 0, uninitialized_var(last_level), child_cnt;
+ int lnum, offs, len, err = 0, last_level, child_cnt;
int first = 1, iip;
struct ubifs_debug_info *d = c->dbg;
- union ubifs_key uninitialized_var(lower_key), upper_key, l_key, u_key;
- unsigned long long uninitialized_var(last_sqnum);
+ union ubifs_key lower_key, upper_key, l_key, u_key;
+ unsigned long long last_sqnum;
struct ubifs_idx_node *idx;
struct list_head list;
struct idx_node *i;
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 83a173feb698..c63baff39ba9 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -433,6 +433,7 @@ static int do_tmpfile(struct inode *dir, struct dentry *dentry,
mutex_unlock(&dir_ui->ui_mutex);
ubifs_release_budget(c, &req);
+ fscrypt_free_filename(&nm);
return 0;
@@ -1125,7 +1126,6 @@ static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
int err, sz_change, len = strlen(symname);
struct fscrypt_str disk_link;
struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
- .new_ino_d = ALIGN(len, 8),
.dirtied_ino = 1 };
struct fscrypt_name nm;
@@ -1141,6 +1141,7 @@ static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
* Budget request settings: new inode, new direntry and changing parent
* directory inode.
*/
+ req.new_ino_d = ALIGN(disk_link.len - 1, 8);
err = ubifs_budget_space(c, &req);
if (err)
return err;
@@ -1205,6 +1206,8 @@ out_cancel:
dir_ui->ui_size = dir->i_size;
mutex_unlock(&dir_ui->ui_mutex);
out_inode:
+ /* Free inode->i_link before inode is marked as bad. */
+ fscrypt_free_inode(inode);
make_bad_inode(inode);
iput(inode);
out_fname:
@@ -1277,7 +1280,7 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry,
struct ubifs_budget_req ino_req = { .dirtied_ino = 1,
.dirtied_ino_d = ALIGN(old_inode_ui->data_len, 8) };
struct timespec64 time;
- unsigned int uninitialized_var(saved_nlink);
+ unsigned int saved_nlink;
struct fscrypt_name old_nm, new_nm;
/*
@@ -1296,6 +1299,8 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry,
if (unlink) {
ubifs_assert(c, inode_is_locked(new_inode));
+ /* Budget for old inode's data when its nlink > 1. */
+ req.dirtied_ino_d = ALIGN(ubifs_inode(new_inode)->data_len, 8);
err = ubifs_purge_xattrs(new_inode);
if (err)
return err;
@@ -1538,6 +1543,10 @@ static int ubifs_xrename(struct inode *old_dir, struct dentry *old_dentry,
return err;
}
+ err = ubifs_budget_space(c, &req);
+ if (err)
+ goto out;
+
lock_4_inodes(old_dir, new_dir, NULL, NULL);
time = current_time(old_dir);
@@ -1563,6 +1572,7 @@ static int ubifs_xrename(struct inode *old_dir, struct dentry *old_dentry,
unlock_4_inodes(old_dir, new_dir, NULL, NULL);
ubifs_release_budget(c, &req);
+out:
fscrypt_free_filename(&fst_nm);
fscrypt_free_filename(&snd_nm);
return err;
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 6069c63d833a..ebad140f8d05 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -222,7 +222,7 @@ static int write_begin_slow(struct address_space *mapping,
struct ubifs_info *c = inode->i_sb->s_fs_info;
pgoff_t index = pos >> PAGE_SHIFT;
struct ubifs_budget_req req = { .new_page = 1 };
- int uninitialized_var(err), appending = !!(pos + len > inode->i_size);
+ int err, appending = !!(pos + len > inode->i_size);
struct page *page;
dbg_gen("ino %lu, pos %llu, len %u, i_size %lld",
@@ -262,9 +262,6 @@ static int write_begin_slow(struct address_space *mapping,
return err;
}
}
-
- SetPageUptodate(page);
- ClearPageError(page);
}
if (PagePrivate(page))
@@ -426,7 +423,7 @@ static int ubifs_write_begin(struct file *file, struct address_space *mapping,
struct ubifs_info *c = inode->i_sb->s_fs_info;
struct ubifs_inode *ui = ubifs_inode(inode);
pgoff_t index = pos >> PAGE_SHIFT;
- int uninitialized_var(err), appending = !!(pos + len > inode->i_size);
+ int err, appending = !!(pos + len > inode->i_size);
int skipped_read = 0;
struct page *page;
@@ -463,9 +460,6 @@ static int ubifs_write_begin(struct file *file, struct address_space *mapping,
return err;
}
}
-
- SetPageUptodate(page);
- ClearPageError(page);
}
err = allocate_budget(c, page, ui, appending);
@@ -475,10 +469,8 @@ static int ubifs_write_begin(struct file *file, struct address_space *mapping,
* If we skipped reading the page because we were going to
* write all of it, then it is not up to date.
*/
- if (skipped_read) {
+ if (skipped_read)
ClearPageChecked(page);
- ClearPageUptodate(page);
- }
/*
* Budgeting failed which means it would have to force
* write-back but didn't, because we set the @fast flag in the
@@ -569,6 +561,9 @@ static int ubifs_write_end(struct file *file, struct address_space *mapping,
goto out;
}
+ if (len == PAGE_SIZE)
+ SetPageUptodate(page);
+
if (!PagePrivate(page)) {
SetPagePrivate(page);
atomic_long_inc(&c->dirty_pg_cnt);
@@ -1031,7 +1026,7 @@ static int ubifs_writepage(struct page *page, struct writeback_control *wbc)
if (page->index >= synced_i_size >> PAGE_SHIFT) {
err = inode->i_sb->s_op->write_inode(inode, NULL);
if (err)
- goto out_unlock;
+ goto out_redirty;
/*
* The inode has been written, but the write-buffer has
* not been synchronized, so in case of an unclean
@@ -1059,11 +1054,17 @@ static int ubifs_writepage(struct page *page, struct writeback_control *wbc)
if (i_size > synced_i_size) {
err = inode->i_sb->s_op->write_inode(inode, NULL);
if (err)
- goto out_unlock;
+ goto out_redirty;
}
return do_writepage(page, len);
-
+out_redirty:
+ /*
+ * redirty_page_for_writepage() won't call ubifs_dirty_inode() because
+ * it passes I_DIRTY_PAGES flag while calling __mark_inode_dirty(), so
+ * there is no need to do space budget for dirty inode.
+ */
+ redirty_page_for_writepage(wbc, page);
out_unlock:
unlock_page(page);
return err;
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index f78c3e3ef931..99f391293c5e 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -1225,7 +1225,7 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
int aligned_dlen1, aligned_dlen2, plen = UBIFS_INO_NODE_SZ;
int last_reference = !!(new_inode && new_inode->i_nlink == 0);
int move = (old_dir != new_dir);
- struct ubifs_inode *uninitialized_var(new_ui);
+ struct ubifs_inode *new_ui;
u8 hash_old_dir[UBIFS_HASH_ARR_SZ];
u8 hash_new_dir[UBIFS_HASH_ARR_SZ];
u8 hash_new_inode[UBIFS_HASH_ARR_SZ];
@@ -1511,7 +1511,7 @@ int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode,
union ubifs_key key, to_key;
struct ubifs_ino_node *ino;
struct ubifs_trun_node *trun;
- struct ubifs_data_node *uninitialized_var(dn);
+ struct ubifs_data_node *dn;
int err, dlen, len, lnum, offs, bit, sz, sync = IS_SYNC(inode);
struct ubifs_inode *ui = ubifs_inode(inode);
ino_t inum = inode->i_ino;
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index e21abf250951..6e0a153b7194 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -275,7 +275,7 @@ uint32_t ubifs_unpack_bits(const struct ubifs_info *c, uint8_t **addr, int *pos,
const int k = 32 - nrbits;
uint8_t *p = *addr;
int b = *pos;
- uint32_t uninitialized_var(val);
+ uint32_t val;
const int bytes = (nrbits + b + 7) >> 3;
ubifs_assert(c, nrbits > 0);
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index b37c6b1e3325..29526040ad77 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -815,7 +815,7 @@ static int alloc_wbufs(struct ubifs_info *c)
INIT_LIST_HEAD(&c->jheads[i].buds_list);
err = ubifs_wbuf_init(c, &c->jheads[i].wbuf);
if (err)
- return err;
+ goto out_wbuf;
c->jheads[i].wbuf.sync_callback = &bud_wbuf_callback;
c->jheads[i].wbuf.jhead = i;
@@ -823,7 +823,7 @@ static int alloc_wbufs(struct ubifs_info *c)
c->jheads[i].log_hash = ubifs_hash_get_desc(c);
if (IS_ERR(c->jheads[i].log_hash)) {
err = PTR_ERR(c->jheads[i].log_hash);
- goto out;
+ goto out_log_hash;
}
}
@@ -836,9 +836,18 @@ static int alloc_wbufs(struct ubifs_info *c)
return 0;
-out:
- while (i--)
+out_log_hash:
+ kfree(c->jheads[i].wbuf.buf);
+ kfree(c->jheads[i].wbuf.inodes);
+
+out_wbuf:
+ while (i--) {
+ kfree(c->jheads[i].wbuf.buf);
+ kfree(c->jheads[i].wbuf.inodes);
kfree(c->jheads[i].log_hash);
+ }
+ kfree(c->jheads);
+ c->jheads = NULL;
return err;
}
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index 33742ee3945b..c8b99a86b63f 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -44,6 +44,33 @@ enum {
NOT_ON_MEDIA = 3,
};
+static void do_insert_old_idx(struct ubifs_info *c,
+ struct ubifs_old_idx *old_idx)
+{
+ struct ubifs_old_idx *o;
+ struct rb_node **p, *parent = NULL;
+
+ p = &c->old_idx.rb_node;
+ while (*p) {
+ parent = *p;
+ o = rb_entry(parent, struct ubifs_old_idx, rb);
+ if (old_idx->lnum < o->lnum)
+ p = &(*p)->rb_left;
+ else if (old_idx->lnum > o->lnum)
+ p = &(*p)->rb_right;
+ else if (old_idx->offs < o->offs)
+ p = &(*p)->rb_left;
+ else if (old_idx->offs > o->offs)
+ p = &(*p)->rb_right;
+ else {
+ ubifs_err(c, "old idx added twice!");
+ kfree(old_idx);
+ }
+ }
+ rb_link_node(&old_idx->rb, parent, p);
+ rb_insert_color(&old_idx->rb, &c->old_idx);
+}
+
/**
* insert_old_idx - record an index node obsoleted since the last commit start.
* @c: UBIFS file-system description object
@@ -69,35 +96,15 @@ enum {
*/
static int insert_old_idx(struct ubifs_info *c, int lnum, int offs)
{
- struct ubifs_old_idx *old_idx, *o;
- struct rb_node **p, *parent = NULL;
+ struct ubifs_old_idx *old_idx;
old_idx = kmalloc(sizeof(struct ubifs_old_idx), GFP_NOFS);
if (unlikely(!old_idx))
return -ENOMEM;
old_idx->lnum = lnum;
old_idx->offs = offs;
+ do_insert_old_idx(c, old_idx);
- p = &c->old_idx.rb_node;
- while (*p) {
- parent = *p;
- o = rb_entry(parent, struct ubifs_old_idx, rb);
- if (lnum < o->lnum)
- p = &(*p)->rb_left;
- else if (lnum > o->lnum)
- p = &(*p)->rb_right;
- else if (offs < o->offs)
- p = &(*p)->rb_left;
- else if (offs > o->offs)
- p = &(*p)->rb_right;
- else {
- ubifs_err(c, "old idx added twice!");
- kfree(old_idx);
- return 0;
- }
- }
- rb_link_node(&old_idx->rb, parent, p);
- rb_insert_color(&old_idx->rb, &c->old_idx);
return 0;
}
@@ -199,23 +206,6 @@ static struct ubifs_znode *copy_znode(struct ubifs_info *c,
__set_bit(DIRTY_ZNODE, &zn->flags);
__clear_bit(COW_ZNODE, &zn->flags);
- ubifs_assert(c, !ubifs_zn_obsolete(znode));
- __set_bit(OBSOLETE_ZNODE, &znode->flags);
-
- if (znode->level != 0) {
- int i;
- const int n = zn->child_cnt;
-
- /* The children now have new parent */
- for (i = 0; i < n; i++) {
- struct ubifs_zbranch *zbr = &zn->zbranch[i];
-
- if (zbr->znode)
- zbr->znode->parent = zn;
- }
- }
-
- atomic_long_inc(&c->dirty_zn_cnt);
return zn;
}
@@ -234,6 +224,42 @@ static int add_idx_dirt(struct ubifs_info *c, int lnum, int dirt)
}
/**
+ * replace_znode - replace old znode with new znode.
+ * @c: UBIFS file-system description object
+ * @new_zn: new znode
+ * @old_zn: old znode
+ * @zbr: the branch of parent znode
+ *
+ * Replace old znode with new znode in TNC.
+ */
+static void replace_znode(struct ubifs_info *c, struct ubifs_znode *new_zn,
+ struct ubifs_znode *old_zn, struct ubifs_zbranch *zbr)
+{
+ ubifs_assert(c, !ubifs_zn_obsolete(old_zn));
+ __set_bit(OBSOLETE_ZNODE, &old_zn->flags);
+
+ if (old_zn->level != 0) {
+ int i;
+ const int n = new_zn->child_cnt;
+
+ /* The children now have new parent */
+ for (i = 0; i < n; i++) {
+ struct ubifs_zbranch *child = &new_zn->zbranch[i];
+
+ if (child->znode)
+ child->znode->parent = new_zn;
+ }
+ }
+
+ zbr->znode = new_zn;
+ zbr->lnum = 0;
+ zbr->offs = 0;
+ zbr->len = 0;
+
+ atomic_long_inc(&c->dirty_zn_cnt);
+}
+
+/**
* dirty_cow_znode - ensure a znode is not being committed.
* @c: UBIFS file-system description object
* @zbr: branch of znode to check
@@ -265,21 +291,32 @@ static struct ubifs_znode *dirty_cow_znode(struct ubifs_info *c,
return zn;
if (zbr->len) {
- err = insert_old_idx(c, zbr->lnum, zbr->offs);
- if (unlikely(err))
- return ERR_PTR(err);
+ struct ubifs_old_idx *old_idx;
+
+ old_idx = kmalloc(sizeof(struct ubifs_old_idx), GFP_NOFS);
+ if (unlikely(!old_idx)) {
+ err = -ENOMEM;
+ goto out;
+ }
+ old_idx->lnum = zbr->lnum;
+ old_idx->offs = zbr->offs;
+
err = add_idx_dirt(c, zbr->lnum, zbr->len);
- } else
- err = 0;
+ if (err) {
+ kfree(old_idx);
+ goto out;
+ }
- zbr->znode = zn;
- zbr->lnum = 0;
- zbr->offs = 0;
- zbr->len = 0;
+ do_insert_old_idx(c, old_idx);
+ }
+
+ replace_znode(c, zn, znode, zbr);
- if (unlikely(err))
- return ERR_PTR(err);
return zn;
+
+out:
+ kfree(zn);
+ return ERR_PTR(err);
}
/**
@@ -892,7 +929,7 @@ static int fallible_resolve_collision(struct ubifs_info *c,
int adding)
{
struct ubifs_znode *o_znode = NULL, *znode = *zn;
- int uninitialized_var(o_n), err, cmp, unsure = 0, nn = *n;
+ int o_n, err, cmp, unsure = 0, nn = *n;
cmp = fallible_matches_name(c, &znode->zbranch[nn], nm);
if (unlikely(cmp < 0))
@@ -1514,8 +1551,8 @@ out:
*/
int ubifs_tnc_get_bu_keys(struct ubifs_info *c, struct bu_info *bu)
{
- int n, err = 0, lnum = -1, uninitialized_var(offs);
- int uninitialized_var(len);
+ int n, err = 0, lnum = -1, offs;
+ int len;
unsigned int block = key_block(c, &bu->key);
struct ubifs_znode *znode;
@@ -3054,6 +3091,21 @@ static void tnc_destroy_cnext(struct ubifs_info *c)
cnext = cnext->cnext;
if (ubifs_zn_obsolete(znode))
kfree(znode);
+ else if (!ubifs_zn_cow(znode)) {
+ /*
+ * Don't forget to update clean znode count after
+ * committing failed, because ubifs will check this
+ * count while closing tnc. Non-obsolete znode could
+ * be re-dirtied during committing process, so dirty
+ * flag is untrustable. The flag 'COW_ZNODE' is set
+ * for each dirty znode before committing, and it is
+ * cleared as long as the znode become clean, so we
+ * can statistic clean znode count according to this
+ * flag.
+ */
+ atomic_long_inc(&c->clean_zn_cnt);
+ atomic_long_inc(&ubifs_clean_zn_cnt);
+ }
} while (cnext && cnext != c->cnext);
}
diff --git a/fs/ubifs/tnc_misc.c b/fs/ubifs/tnc_misc.c
index 49cb34c3f324..ccaf94ea5be3 100644
--- a/fs/ubifs/tnc_misc.c
+++ b/fs/ubifs/tnc_misc.c
@@ -126,8 +126,8 @@ int ubifs_search_zbranch(const struct ubifs_info *c,
const struct ubifs_znode *znode,
const union ubifs_key *key, int *n)
{
- int beg = 0, end = znode->child_cnt, uninitialized_var(mid);
- int uninitialized_var(cmp);
+ int beg = 0, end = znode->child_cnt, mid;
+ int cmp;
const struct ubifs_zbranch *zbr = &znode->zbranch[0];
ubifs_assert(c, end > beg);
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index b3b7e3576e98..85e84138649b 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1593,8 +1593,13 @@ static inline int ubifs_check_hmac(const struct ubifs_info *c,
return crypto_memneq(expected, got, c->hmac_desc_len);
}
+#ifdef CONFIG_UBIFS_FS_AUTHENTICATION
void ubifs_bad_hash(const struct ubifs_info *c, const void *node,
const u8 *hash, int lnum, int offs);
+#else
+static inline void ubifs_bad_hash(const struct ubifs_info *c, const void *node,
+ const u8 *hash, int lnum, int offs) {};
+#endif
int __ubifs_node_check_hash(const struct ubifs_info *c, const void *buf,
const u8 *expected);
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-18 06:22:21 +0000