summaryrefslogtreecommitdiffstats
path: root/fs/ubifs/replay.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ubifs/replay.c')
-rw-r--r--fs/ubifs/replay.c71
1 files changed, 58 insertions, 13 deletions
diff --git a/fs/ubifs/replay.c b/fs/ubifs/replay.c
index 9eb24b035d..8863a30d81 100644
--- a/fs/ubifs/replay.c
+++ b/fs/ubifs/replay.c
@@ -56,6 +56,7 @@ struct replay_entry {
int lnum;
int offs;
int len;
+ u8 hash[UBIFS_HASH_ARR_SZ];
unsigned int deletion:1;
unsigned long long sqnum;
struct list_head list;
@@ -141,7 +142,7 @@ static int apply_replay_entry(struct ubifs_info *c, struct replay_entry *r)
err = ubifs_tnc_remove_nm(c, &r->key, &r->nm);
else
err = ubifs_tnc_add_nm(c, &r->key, r->lnum, r->offs,
- r->len, &r->nm);
+ r->len, r->hash, &r->nm);
} else {
if (r->deletion)
switch (key_type(c, &r->key)) {
@@ -161,7 +162,7 @@ static int apply_replay_entry(struct ubifs_info *c, struct replay_entry *r)
}
else
err = ubifs_tnc_add(c, &r->key, r->lnum, r->offs,
- r->len);
+ r->len, r->hash);
if (err)
return err;
@@ -265,9 +266,9 @@ static void destroy_replay_list(struct ubifs_info *c)
* in case of success and a negative error code in case of failure.
*/
static int insert_node(struct ubifs_info *c, int lnum, int offs, int len,
- union ubifs_key *key, unsigned long long sqnum,
- int deletion, int *used, loff_t old_size,
- loff_t new_size)
+ const u8 *hash, union ubifs_key *key,
+ unsigned long long sqnum, int deletion, int *used,
+ loff_t old_size, loff_t new_size)
{
struct replay_entry *r;
@@ -285,6 +286,7 @@ static int insert_node(struct ubifs_info *c, int lnum, int offs, int len,
r->lnum = lnum;
r->offs = offs;
r->len = len;
+ ubifs_copy_hash(c, hash, r->hash);
r->deletion = !!deletion;
r->sqnum = sqnum;
key_copy(c, key, &r->key);
@@ -313,8 +315,9 @@ static int insert_node(struct ubifs_info *c, int lnum, int offs, int len,
* negative error code in case of failure.
*/
static int insert_dent(struct ubifs_info *c, int lnum, int offs, int len,
- union ubifs_key *key, const char *name, int nlen,
- unsigned long long sqnum, int deletion, int *used)
+ const u8 *hash, union ubifs_key *key,
+ const char *name, int nlen, unsigned long long sqnum,
+ int deletion, int *used)
{
struct replay_entry *r;
char *nbuf;
@@ -338,6 +341,7 @@ static int insert_dent(struct ubifs_info *c, int lnum, int offs, int len,
r->lnum = lnum;
r->offs = offs;
r->len = len;
+ ubifs_copy_hash(c, hash, r->hash);
r->deletion = !!deletion;
r->sqnum = sqnum;
key_copy(c, key, &r->key);
@@ -440,6 +444,12 @@ static int is_last_bud(struct ubifs_info *c, struct ubifs_bud *bud)
return data == 0xFFFFFFFF;
}
+/*
+ * removed in barebox
+static int authenticate_sleb(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
+ struct shash_desc *log_hash, int is_last)
+ */
+
/**
* replay_bud - replay a bud logical eraseblock.
* @c: UBIFS file-system description object
@@ -472,6 +482,9 @@ static int replay_bud(struct ubifs_info *c, struct bud_entry *b)
if (IS_ERR(sleb))
return PTR_ERR(sleb);
+ ubifs_shash_copy_state(c, b->bud->log_hash,
+ c->jheads[b->bud->jhead].log_hash);
+
/*
* The bud does not have to start from offset zero - the beginning of
* the 'lnum' LEB may contain previously committed data. One of the
@@ -495,6 +508,7 @@ static int replay_bud(struct ubifs_info *c, struct bud_entry *b)
*/
list_for_each_entry(snod, &sleb->nodes, list) {
+ u8 hash[UBIFS_HASH_ARR_SZ];
int deletion = 0;
cond_resched();
@@ -504,6 +518,8 @@ static int replay_bud(struct ubifs_info *c, struct bud_entry *b)
goto out_dump;
}
+ ubifs_node_calc_hash(c, snod->node, hash);
+
if (snod->sqnum > c->max_sqnum)
c->max_sqnum = snod->sqnum;
@@ -515,7 +531,7 @@ static int replay_bud(struct ubifs_info *c, struct bud_entry *b)
if (le32_to_cpu(ino->nlink) == 0)
deletion = 1;
- err = insert_node(c, lnum, snod->offs, snod->len,
+ err = insert_node(c, lnum, snod->offs, snod->len, hash,
&snod->key, snod->sqnum, deletion,
&used, 0, new_size);
break;
@@ -527,7 +543,7 @@ static int replay_bud(struct ubifs_info *c, struct bud_entry *b)
key_block(c, &snod->key) *
UBIFS_BLOCK_SIZE;
- err = insert_node(c, lnum, snod->offs, snod->len,
+ err = insert_node(c, lnum, snod->offs, snod->len, hash,
&snod->key, snod->sqnum, deletion,
&used, 0, new_size);
break;
@@ -541,7 +557,7 @@ static int replay_bud(struct ubifs_info *c, struct bud_entry *b)
if (err)
goto out_dump;
- err = insert_dent(c, lnum, snod->offs, snod->len,
+ err = insert_dent(c, lnum, snod->offs, snod->len, hash,
&snod->key, dent->name,
le16_to_cpu(dent->nlen), snod->sqnum,
!le64_to_cpu(dent->inum), &used);
@@ -567,11 +583,13 @@ static int replay_bud(struct ubifs_info *c, struct bud_entry *b)
* functions which expect nodes to have keys.
*/
trun_key_init(c, &key, le32_to_cpu(trun->inum));
- err = insert_node(c, lnum, snod->offs, snod->len,
+ err = insert_node(c, lnum, snod->offs, snod->len, hash,
&key, snod->sqnum, 1, &used,
old_size, new_size);
break;
}
+ case UBIFS_AUTH_NODE:
+ break;
default:
ubifs_err(c, "unexpected node type %d in bud LEB %d:%d",
snod->type, lnum, snod->offs);
@@ -658,6 +676,7 @@ static int add_replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
{
struct ubifs_bud *bud;
struct bud_entry *b;
+ int err;
dbg_mnt("add replay bud LEB %d:%d, head %d", lnum, offs, jhead);
@@ -667,13 +686,21 @@ static int add_replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
b = kmalloc(sizeof(struct bud_entry), GFP_KERNEL);
if (!b) {
- kfree(bud);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto out;
}
bud->lnum = lnum;
bud->start = offs;
bud->jhead = jhead;
+ bud->log_hash = ubifs_hash_get_desc(c);
+ if (IS_ERR(bud->log_hash)) {
+ err = PTR_ERR(bud->log_hash);
+ goto out;
+ }
+
+ ubifs_shash_copy_state(c, c->log_hash, bud->log_hash);
+
ubifs_add_bud(c, bud);
b->bud = bud;
@@ -681,6 +708,11 @@ static int add_replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
list_add_tail(&b->list, &c->replay_buds);
return 0;
+out:
+ kfree(bud);
+ kfree(b);
+
+ return err;
}
/**
@@ -786,6 +818,14 @@ static int replay_log_leb(struct ubifs_info *c, int lnum, int offs, void *sbuf)
c->cs_sqnum = le64_to_cpu(node->ch.sqnum);
dbg_mnt("commit start sqnum %llu", c->cs_sqnum);
+
+ err = ubifs_shash_init(c, c->log_hash);
+ if (err)
+ goto out;
+
+ err = ubifs_shash_update(c, c->log_hash, node, UBIFS_CS_NODE_SZ);
+ if (err < 0)
+ goto out;
}
if (snod->sqnum < c->cs_sqnum) {
@@ -833,6 +873,11 @@ static int replay_log_leb(struct ubifs_info *c, int lnum, int offs, void *sbuf)
if (err)
goto out_dump;
+ err = ubifs_shash_update(c, c->log_hash, ref,
+ UBIFS_REF_NODE_SZ);
+ if (err)
+ goto out;
+
err = add_replay_bud(c, le32_to_cpu(ref->lnum),
le32_to_cpu(ref->offs),
le32_to_cpu(ref->jhead),
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 18:11:16 +0000