aboutsummaryrefslogtreecommitdiff
path: root/lib/sqfs
diff options
context:
space:
mode:
authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-15 15:59:01 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-15 15:59:01 +0200
commit36205a44d68576a158c9f233a17abe5f8a3c63a0 (patch)
tree11ae83cb10b33726cb8e4c48abe4a5b69c9b9a8d /lib/sqfs
parente165fb864fe86eda398a14713cf38924cc537adc (diff)
Add helper function to directory writer to create a basic inode
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/sqfs')
-rw-r--r--lib/sqfs/dir_writer.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/sqfs/dir_writer.c b/lib/sqfs/dir_writer.c
index d7bb590..47e6b62 100644
--- a/lib/sqfs/dir_writer.c
+++ b/lib/sqfs/dir_writer.c
@@ -45,6 +45,7 @@ struct sqfs_dir_writer_t {
uint64_t dir_ref;
size_t dir_size;
size_t idx_size;
+ size_t ent_count;
sqfs_meta_writer_t *dm;
};
@@ -85,6 +86,7 @@ static void writer_reset(sqfs_dir_writer_t *writer)
writer->dir_ref = 0;
writer->dir_size = 0;
writer->idx_size = 0;
+ writer->ent_count = 0;
}
sqfs_dir_writer_t *sqfs_dir_writer_create(sqfs_meta_writer_t *dm)
@@ -145,6 +147,7 @@ int sqfs_dir_writer_add_entry(sqfs_dir_writer_t *writer, const char *name,
}
writer->dir_size += sizeof(ent) + ent->name_len;
+ writer->ent_count += 1;
return 0;
}
@@ -275,6 +278,53 @@ size_t sqfs_dir_writer_get_index_size(const sqfs_dir_writer_t *writer)
return writer->idx_size;
}
+size_t sqfs_dir_writer_get_entry_count(const sqfs_dir_writer_t *writer)
+{
+ return writer->ent_count;
+}
+
+sqfs_inode_generic_t
+*sqfs_dir_writer_create_inode(const sqfs_dir_writer_t *writer,
+ size_t hlinks, uint32_t xattr,
+ uint32_t parent_ino)
+{
+ sqfs_inode_generic_t *inode;
+ uint64_t start_block;
+ uint16_t block_offset;
+
+ inode = calloc(1, sizeof(*inode));
+ if (inode == NULL)
+ return NULL;
+
+ start_block = writer->dir_ref >> 16;
+ block_offset = writer->dir_ref & 0xFFFF;
+
+ if (xattr != 0xFFFFFFFF || start_block > 0xFFFFFFFFUL ||
+ writer->dir_size > 0xFFFF) {
+ inode->base.type = SQFS_INODE_EXT_DIR;
+ } else {
+ inode->base.type = SQFS_INODE_DIR;
+ }
+
+ if (inode->base.type == SQFS_INODE_DIR) {
+ inode->data.dir.start_block = start_block;
+ inode->data.dir.nlink = writer->ent_count + hlinks + 2;
+ inode->data.dir.size = writer->dir_size;
+ inode->data.dir.offset = block_offset;
+ inode->data.dir.parent_inode = parent_ino;
+ } else {
+ inode->data.dir_ext.nlink = writer->ent_count + hlinks + 2;
+ inode->data.dir_ext.size = writer->dir_size;
+ inode->data.dir_ext.start_block = start_block;
+ inode->data.dir_ext.parent_inode = parent_ino;
+ inode->data.dir_ext.offset = block_offset;
+ inode->data.dir_ext.xattr_idx = xattr;
+ inode->data.dir_ext.inodex_count = writer->idx_size;
+ }
+
+ return inode;
+}
+
int sqfs_dir_writer_write_index(const sqfs_dir_writer_t *writer,
sqfs_meta_writer_t *im)
{