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-rw-r--r--lib/sqfs/src/dir_reader.c56
1 files changed, 24 insertions, 32 deletions
diff --git a/lib/sqfs/src/dir_reader.c b/lib/sqfs/src/dir_reader.c
index c904f35..2b6d0e8 100644
--- a/lib/sqfs/src/dir_reader.c
+++ b/lib/sqfs/src/dir_reader.c
@@ -36,8 +36,6 @@ struct sqfs_dir_reader_t {
sqfs_u32 flags;
rbtree_t dcache;
-
- sqfs_dir_reader_state_t state;
};
static int dcache_key_compare(const void *ctx, const void *l, const void *r)
@@ -189,6 +187,7 @@ fail_dcache:
int sqfs_dir_reader_open_dir(sqfs_dir_reader_t *rd,
const sqfs_inode_generic_t *inode,
+ sqfs_dir_reader_state_t *state,
sqfs_u32 flags)
{
sqfs_u32 parent;
@@ -197,7 +196,9 @@ int sqfs_dir_reader_open_dir(sqfs_dir_reader_t *rd,
if (flags & (~SQFS_DIR_OPEN_ALL_FLAGS))
return SQFS_ERROR_UNSUPPORTED;
- ret = sqfs_readdir_state_init(&rd->state.cursor, &rd->super, inode);
+ memset(state, 0, sizeof(*state));
+
+ ret = sqfs_readdir_state_init(&state->cursor, &rd->super, inode);
if (ret)
return ret;
@@ -209,21 +210,21 @@ int sqfs_dir_reader_open_dir(sqfs_dir_reader_t *rd,
parent = inode->data.dir.parent_inode;
}
- if (dcache_find(rd, inode->base.inode_number, &rd->state.cur_ref))
+ if (dcache_find(rd, inode->base.inode_number, &state->cur_ref))
return SQFS_ERROR_NO_ENTRY;
- if (rd->state.cur_ref == rd->super.root_inode_ref) {
- rd->state.parent_ref = rd->state.cur_ref;
- } else if (dcache_find(rd, parent, &rd->state.parent_ref)) {
+ if (state->cur_ref == rd->super.root_inode_ref) {
+ state->parent_ref = state->cur_ref;
+ } else if (dcache_find(rd, parent, &state->parent_ref)) {
return SQFS_ERROR_NO_ENTRY;
}
- rd->state.state = DIR_STATE_OPENED;
+ state->state = DIR_STATE_OPENED;
} else {
- rd->state.state = DIR_STATE_ENTRIES;
+ state->state = DIR_STATE_ENTRIES;
}
- rd->state.start_state = rd->state.state;
+ state->start_state = state->state;
return 0;
}
@@ -245,23 +246,24 @@ static int mk_dummy_entry(const char *str, sqfs_dir_node_t **out)
return 0;
}
-int sqfs_dir_reader_read(sqfs_dir_reader_t *rd, sqfs_dir_node_t **out)
+int sqfs_dir_reader_read(sqfs_dir_reader_t *rd, sqfs_dir_reader_state_t *state,
+ sqfs_dir_node_t **out)
{
int err;
- switch (rd->state.state) {
+ switch (state->state) {
case DIR_STATE_OPENED:
err = mk_dummy_entry(".", out);
if (err == 0) {
- rd->state.state = DIR_STATE_DOT;
- rd->state.ent_ref = rd->state.cur_ref;
+ state->state = DIR_STATE_DOT;
+ state->ent_ref = state->cur_ref;
}
return err;
case DIR_STATE_DOT:
err = mk_dummy_entry("..", out);
if (err == 0) {
- rd->state.state = DIR_STATE_ENTRIES;
- rd->state.ent_ref = rd->state.parent_ref;
+ state->state = DIR_STATE_ENTRIES;
+ state->ent_ref = state->parent_ref;
}
return err;
case DIR_STATE_ENTRIES:
@@ -270,35 +272,25 @@ int sqfs_dir_reader_read(sqfs_dir_reader_t *rd, sqfs_dir_node_t **out)
return SQFS_ERROR_SEQUENCE;
}
- return sqfs_meta_reader_readdir(rd->meta_dir, &rd->state.cursor,
- out, NULL, &rd->state.ent_ref);
+ return sqfs_meta_reader_readdir(rd->meta_dir, &state->cursor,
+ out, NULL, &state->ent_ref);
}
-int sqfs_dir_reader_get_inode(sqfs_dir_reader_t *rd,
+int sqfs_dir_reader_get_inode(sqfs_dir_reader_t *rd, sqfs_u64 ref,
sqfs_inode_generic_t **inode)
{
int ret;
ret = sqfs_meta_reader_read_inode(rd->meta_inode, &rd->super,
- rd->state.ent_ref >> 16,
- rd->state.ent_ref & 0x0FFFF, inode);
+ ref >> 16, ref & 0x0FFFF, inode);
if (ret != 0)
return ret;
- return dcache_add(rd, *inode, rd->state.ent_ref);
+ return dcache_add(rd, *inode, ref);
}
int sqfs_dir_reader_get_root_inode(sqfs_dir_reader_t *rd,
sqfs_inode_generic_t **inode)
{
- sqfs_u64 block_start = rd->super.root_inode_ref >> 16;
- sqfs_u16 offset = rd->super.root_inode_ref & 0xFFFF;
- int ret;
-
- ret = sqfs_meta_reader_read_inode(rd->meta_inode, &rd->super,
- block_start, offset, inode);
- if (ret != 0)
- return ret;
-
- return dcache_add(rd, *inode, rd->super.root_inode_ref);
+ return sqfs_dir_reader_get_inode(rd, rd->super.root_inode_ref, inode);
}