diff options
Diffstat (limited to 'lib/sqfs/inode.c')
| -rw-r--r-- | lib/sqfs/inode.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/sqfs/inode.c b/lib/sqfs/inode.c index 4a75e64..bb1ccef 100644 --- a/lib/sqfs/inode.c +++ b/lib/sqfs/inode.c @@ -10,6 +10,9 @@ #include "sqfs/inode.h" #include "sqfs/error.h" +#include <string.h> +#include <stdlib.h> + static int inverse_type[] = { [SQFS_INODE_DIR] = SQFS_INODE_EXT_DIR, [SQFS_INODE_FILE] = SQFS_INODE_EXT_FILE, @@ -27,6 +30,52 @@ static int inverse_type[] = { [SQFS_INODE_EXT_SOCKET] = SQFS_INODE_SOCKET, }; +int sqfs_inode_copy(const sqfs_inode_generic_t *src, + sqfs_inode_generic_t **out) +{ + sqfs_inode_generic_t *copy; + size_t size = sizeof(*src); + + switch (src->base.type) { + case SQFS_INODE_FILE: + case SQFS_INODE_EXT_FILE: + size += src->num_file_blocks; + break; + case SQFS_INODE_DIR: + case SQFS_INODE_EXT_DIR: + size += src->num_dir_idx_bytes; + break; + case SQFS_INODE_SLINK: + size += src->data.slink.target_size; + break; + case SQFS_INODE_EXT_SLINK: + size += src->data.slink_ext.target_size; + break; + case SQFS_INODE_BDEV: + case SQFS_INODE_CDEV: + case SQFS_INODE_FIFO: + case SQFS_INODE_SOCKET: + case SQFS_INODE_EXT_BDEV: + case SQFS_INODE_EXT_CDEV: + case SQFS_INODE_EXT_FIFO: + case SQFS_INODE_EXT_SOCKET: + break; + default: + return SQFS_ERROR_CORRUPTED; + } + + copy = calloc(1, size); + if (copy == NULL) + return SQFS_ERROR_ALLOC; + + memcpy(copy, src, size); + copy->block_sizes = (sqfs_u32 *)copy->extra; + copy->slink_target = (char *)copy->extra; + + *out = copy; + return 0; +} + int sqfs_inode_get_xattr_index(const sqfs_inode_generic_t *inode, sqfs_u32 *out) { |