- /* (Extraction only) Actual name to extract this dentry as, along with
- * its length in tchars excluding the NULL terminator. This usually
- * will be the same as file_name, with the character encoding converted
- * if needed. But if file_name contains characters not accepted on the
- * current platform, then this may be set slightly differently from
- * file_name. This will be either NULL or a malloc()ed buffer that may
- * alias file_name. */
- tchar *extraction_name;
- size_t extraction_name_nchars;
-};
-
-#define rbnode_dentry(node) container_of(node, struct wim_dentry, rb_node)
-
-/*
- * WIM inode.
- *
- * As mentioned in the comment above `struct wim_dentry', in the WIM file that
- * is no on-disk analogue of a real inode, as most of these fields are
- * duplicated in the dentries. Instead, a `struct wim_inode' is something we
- * create ourselves to simplify the handling of hard links.
- */
-struct wim_inode {
- /* If i_resolved == 0:
- * SHA1 message digest of the contents of the unnamed-data stream
- * of this inode.
- *
- * If i_resolved == 1:
- * Pointer to the lookup table entry for the unnamed data stream
- * of this inode, or NULL.
- *
- * i_hash corresponds to the 'unnamed_stream_hash' field of the `struct
- * wim_dentry_on_disk' and the additional caveats documented about that
- * field apply here (for example, the quirks regarding all-zero hashes).
- */
- union {
- u8 i_hash[SHA1_HASH_SIZE];
- struct wim_lookup_table_entry *i_lte;
- };
-
- /* Corresponds to the 'attributes' field of `struct wim_dentry_on_disk';
- * bitwise OR of the FILE_ATTRIBUTE_* flags that give the attributes of
- * this inode. */
- u32 i_attributes;
-
- /* Root of a red-black tree storing the child dentries of this inode, if
- * any. Keyed by wim_dentry->file_name, case sensitively. */
- struct rb_root i_children;
-
- /* Root of a red-black tree storing the children of this inode, if any.
- * Keyed by wim_dentry->file_name, case insensitively. */
- struct rb_root i_children_case_insensitive;
-
- /* List of dentries that are aliases for this inode. There will be
- * i_nlink dentries in this list. */
- struct list_head i_dentry;
-
- /* Field to place this inode into a list. */
- union {
- /* Hash list node- used in hardlink.c when the inodes are placed
- * into a hash table keyed by inode number and optionally device
- * number, in order to detect dentries that are aliases for the
- * same inode. */
- struct hlist_node i_hlist;
-
- /* Normal list node- used to connect all the inodes of a WIM image
- * into a single linked list referenced from the
- * `struct wim_image_metadata' for that image. */
- struct list_head i_list;
- };
-
- /* Number of dentries that are aliases for this inode. */
- u32 i_nlink;
-
- /* Number of alternate data streams (ADS) associated with this inode */
- u16 i_num_ads;
-
- /* Flag that indicates whether this inode's streams have been
- * "resolved". By default, the inode starts as "unresolved", meaning
- * that the i_hash field, along with the hash field of any associated
- * wim_ads_entry's, are valid and should be used as keys in the WIM
- * lookup table to find the associated `struct wim_lookup_table_entry'.
- * But if the inode has been resolved, then each of these fields is
- * replaced with a pointer directly to the appropriate `struct
- * wim_lookup_table_entry', or NULL if the stream is empty. */
- u8 i_resolved : 1;
-
- /* Flag used to mark this inode as visited; this is used when visiting
- * all the inodes in a dentry tree exactly once. It will be 0 by
- * default and must be cleared following the tree traversal, even in
- * error paths. */
- u8 i_visited : 1;
-
- /* Set if the DOS name of an inode has already been extracted. */
- u8 i_dos_name_extracted : 1;
-
- /* 1 iff all ADS entries of this inode are named or if this inode
- * has no ADS entries */
- u8 i_canonical_streams : 1;
-
- /* Pointer to a malloc()ed array of i_num_ads alternate data stream
- * entries for this inode. */
- struct wim_ads_entry *i_ads_entries;
-
- /* Creation time, last access time, and last write time for this inode, in
- * 100-nanosecond intervals since 12:00 a.m UTC January 1, 1601. They
- * should correspond to the times gotten by calling GetFileTime() on
- * Windows. */
- u64 i_creation_time;
- u64 i_last_access_time;
- u64 i_last_write_time;
-
- /* Corresponds to 'security_id' in `struct wim_dentry_on_disk': The
- * index of this inode's security descriptor in the WIM image's table of
- * security descriptors, or -1. Note: in verify_inode(), called
- * whenever a WIM image is loaded, out-of-bounds indices are set to -1,
- * so the extraction code does not need to do bounds checks. */
- int32_t i_security_id;
-
- /* Identity of a reparse point. See
- * http://msdn.microsoft.com/en-us/library/windows/desktop/aa365503(v=vs.85).aspx
- * for what a reparse point is. */
- u32 i_reparse_tag;
-
- /* Unused/unknown fields that we just read into memory so we can
- * re-write them unchanged. */
- u32 i_rp_unknown_1;
- u16 i_rp_unknown_2;
-
- /* Corresponds to not_rpfixed in `struct wim_dentry_on_disk': Set to 0
- * if reparse point fixups have been done. Otherwise set to 1. Note:
- * this actually may reflect the SYMBOLIC_LINK_RELATIVE flag.
- */
- u16 i_not_rpfixed;
-
- /* Inode number; corresponds to hard_link_group_id in the `struct
- * wim_dentry_on_disk'. */
- u64 i_ino;