diff options
Diffstat (limited to 'fs/ubifs/tnc_commit.c')
| -rw-r--r-- | fs/ubifs/tnc_commit.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c index dba87d09b98937..dbcd2c350b6522 100644 --- a/fs/ubifs/tnc_commit.c +++ b/fs/ubifs/tnc_commit.c @@ -38,6 +38,7 @@ static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx, struct ubifs_znode *znode, int lnum, int offs, int len) { struct ubifs_znode *zp; + u8 hash[UBIFS_HASH_ARR_SZ]; int i, err; /* Make index node */ @@ -52,6 +53,7 @@ static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx, br->lnum = cpu_to_le32(zbr->lnum); br->offs = cpu_to_le32(zbr->offs); br->len = cpu_to_le32(zbr->len); + ubifs_copy_hash(c, zbr->hash, ubifs_branch_hash(c, br)); if (!zbr->lnum || !zbr->len) { ubifs_err(c, "bad ref in znode"); ubifs_dump_znode(c, znode); @@ -62,6 +64,7 @@ static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx, } } ubifs_prepare_node(c, idx, len, 0); + ubifs_node_calc_hash(c, idx, hash); znode->lnum = lnum; znode->offs = offs; @@ -78,10 +81,12 @@ static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx, zbr->lnum = lnum; zbr->offs = offs; zbr->len = len; + ubifs_copy_hash(c, hash, zbr->hash); } else { c->zroot.lnum = lnum; c->zroot.offs = offs; c->zroot.len = len; + ubifs_copy_hash(c, hash, c->zroot.hash); } c->calc_idx_sz += ALIGN(len, 8); @@ -647,6 +652,8 @@ static int get_znodes_to_commit(struct ubifs_info *c) znode->cnext = c->cnext; break; } + znode->cparent = znode->parent; + znode->ciip = znode->iip; znode->cnext = cnext; znode = cnext; cnt += 1; @@ -840,6 +847,8 @@ static int write_index(struct ubifs_info *c) } while (1) { + u8 hash[UBIFS_HASH_ARR_SZ]; + cond_resched(); znode = cnext; @@ -857,6 +866,7 @@ static int write_index(struct ubifs_info *c) br->lnum = cpu_to_le32(zbr->lnum); br->offs = cpu_to_le32(zbr->offs); br->len = cpu_to_le32(zbr->len); + ubifs_copy_hash(c, zbr->hash, ubifs_branch_hash(c, br)); if (!zbr->lnum || !zbr->len) { ubifs_err(c, "bad ref in znode"); ubifs_dump_znode(c, znode); @@ -868,6 +878,23 @@ static int write_index(struct ubifs_info *c) } len = ubifs_idx_node_sz(c, znode->child_cnt); ubifs_prepare_node(c, idx, len, 0); + ubifs_node_calc_hash(c, idx, hash); + + mutex_lock(&c->tnc_mutex); + + if (znode->cparent) + ubifs_copy_hash(c, hash, + znode->cparent->zbranch[znode->ciip].hash); + + if (znode->parent) { + if (!ubifs_zn_obsolete(znode)) + ubifs_copy_hash(c, hash, + znode->parent->zbranch[znode->iip].hash); + } else { + ubifs_copy_hash(c, hash, c->zroot.hash); + } + + mutex_unlock(&c->tnc_mutex); /* Determine the index node position */ if (lnum == -1) { |