+++ /dev/null
-#ifndef _WIMLIB_DENTRY_H
-#define _WIMLIB_DENTRY_H
-
-#include "util.h"
-#include "config.h"
-#include "list.h"
-#include "sha1.h"
-#include "rbtree.h"
-#include <string.h>
-
-#ifdef WITH_FUSE
-#include <pthread.h>
-#endif
-
-struct stat;
-struct wim_lookup_table;
-struct WIMStruct;
-struct wim_lookup_table_entry;
-struct wimfs_fd;
-struct wim_inode;
-struct wim_dentry;
-
-/* Size of the struct wim_dentry up to and including the file_name_len. */
-#define WIM_DENTRY_DISK_SIZE 102
-
-/* Size of on-disk WIM alternate data stream entry, in bytes, up to and
- * including the stream length field (see below). */
-#define WIM_ADS_ENTRY_DISK_SIZE 38
-
-/*
- * Reparse tags documented at
- * http://msdn.microsoft.com/en-us/library/dd541667(v=prot.10).aspx
- */
-#define WIM_IO_REPARSE_TAG_RESERVED_ZERO 0x00000000
-#define WIM_IO_REPARSE_TAG_RESERVED_ONE 0x00000001
-#define WIM_IO_REPARSE_TAG_MOUNT_POINT 0xA0000003
-#define WIM_IO_REPARSE_TAG_HSM 0xC0000004
-#define WIM_IO_REPARSE_TAG_HSM2 0x80000006
-#define WIM_IO_REPARSE_TAG_DRIVER_EXTENDER 0x80000005
-#define WIM_IO_REPARSE_TAG_SIS 0x80000007
-#define WIM_IO_REPARSE_TAG_DFS 0x8000000A
-#define WIM_IO_REPARSE_TAG_DFSR 0x80000012
-#define WIM_IO_REPARSE_TAG_FILTER_MANAGER 0x8000000B
-#define WIM_IO_REPARSE_TAG_SYMLINK 0xA000000C
-
-#define FILE_ATTRIBUTE_READONLY 0x00000001
-#define FILE_ATTRIBUTE_HIDDEN 0x00000002
-#define FILE_ATTRIBUTE_SYSTEM 0x00000004
-#define FILE_ATTRIBUTE_DIRECTORY 0x00000010
-#define FILE_ATTRIBUTE_ARCHIVE 0x00000020
-#define FILE_ATTRIBUTE_DEVICE 0x00000040
-#define FILE_ATTRIBUTE_NORMAL 0x00000080
-#define FILE_ATTRIBUTE_TEMPORARY 0x00000100
-#define FILE_ATTRIBUTE_SPARSE_FILE 0x00000200
-#define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
-#define FILE_ATTRIBUTE_COMPRESSED 0x00000800
-#define FILE_ATTRIBUTE_OFFLINE 0x00001000
-#define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED 0x00002000
-#define FILE_ATTRIBUTE_ENCRYPTED 0x00004000
-#define FILE_ATTRIBUTE_VIRTUAL 0x00010000
-
-
-/* Alternate data stream entry.
- *
- * We read this from disk in the read_ads_entries() function; see that function
- * for more explanation. */
-struct wim_ads_entry {
- union {
- /* SHA-1 message digest of stream contents */
- u8 hash[SHA1_HASH_SIZE];
-
- /* The corresponding lookup table entry (only for resolved
- * streams) */
- struct wim_lookup_table_entry *lte;
- };
-
- /* Length of UTF16-encoded stream name, in bytes, not including the
- * terminating null character. */
- u16 stream_name_nbytes;
-
- /* Number to identify an alternate data stream even after it's possibly
- * been moved or renamed. */
- u32 stream_id;
-
- /* Stream name (UTF-16LE) */
- utf16lechar *stream_name;
-
- /* Unused field. We read it into memory so we can write it out
- * unchanged. */
- u64 unused;
-};
-
-
-static inline bool
-ads_entries_have_same_name(const struct wim_ads_entry *entry_1,
- const struct wim_ads_entry *entry_2)
-{
- return entry_1->stream_name_nbytes == entry_2->stream_name_nbytes &&
- memcmp(entry_1->stream_name, entry_2->stream_name,
- entry_1->stream_name_nbytes) == 0;
-}
-
-/*
- * In-memory structure for a WIM directory entry (dentry). There is a directory
- * tree for each image in the WIM.
- *
- * Note that this is a directory entry and not an inode. Since NTFS allows hard
- * links, it's possible for a NTFS inode to correspond to multiple WIM dentries.
- * The hard link group ID field of the on-disk WIM dentry tells us the number of
- * the NTFS inode that the dentry corresponds to (and this gets placed in
- * d_inode->i_ino).
- *
- * Unfortunately, WIM files do not have an analogue to an inode; instead certain
- * information, such as file attributes, the security descriptor, and file
- * streams is replicated in each hard-linked dentry, even though this
- * information really is associated with an inode. In-memory, we fix up this
- * flaw by allocating a `struct wim_inode' for each dentry that contains some of
- * this duplicated information, then combining the inodes for each hard link
- * group together.
- *
- * Confusingly, it's possible for stream information to be missing from a dentry
- * in a hard link set, in which case the stream information needs to be gotten
- * from one of the other dentries in the hard link set. In addition, it is
- * possible for dentries to have inconsistent security IDs, file attributes, or
- * file streams when they share the same hard link ID (don't even ask. I hope
- * that Microsoft may have fixed this problem, since I've only noticed it in the
- * 'install.wim' for Windows 7). For those dentries, we have to use the
- * conflicting fields to split up the hard link groups. (See
- * dentry_tree_fix_inodes() in hardlink.c).
- */
-struct wim_dentry {
- /* The inode for this dentry */
- struct wim_inode *d_inode;
-
- /* Red-black tree of sibling dentries */
- struct rb_node rb_node;
-
- /* Length of UTF-16LE encoded short filename, in bytes, not including
- * the terminating zero wide-character. */
- u16 short_name_nbytes;
-
- /* Length of UTF-16LE encoded "long" file name, in bytes, not including
- * the terminating null character. */
- u16 file_name_nbytes;
-
- /* Length of full path name encoded using "tchars", in bytes, not
- * including the terminating null character. */
- u32 full_path_nbytes;
-
- /* Does this dentry need to be extracted? */
- u8 needs_extraction : 1;
-
- /* Only used during NTFS capture */
- u8 is_win32_name : 1;
-
- /* Temporary list */
- struct list_head tmp_list;
-
- /* List of dentries in the inode (hard link set) */
- struct list_head d_alias;
-
- /* The parent of this directory entry. */
- struct wim_dentry *parent;
-
- /*
- * Size of directory entry on disk, in bytes. Typical size is around
- * 104 to 120 bytes.
- *
- * It is possible for the length field to be 0. This situation, which
- * is undocumented, indicates the end of a list of sibling nodes in a
- * directory. It also means the real length is 8, because the dentry
- * included only the length field, but that takes up 8 bytes.
- *
- * The length here includes the base directory entry on disk as well as
- * the long and short filenames. It does NOT include any alternate
- * stream entries that may follow the directory entry, even though the
- * size of those needs to be considered. The length SHOULD be 8-byte
- * aligned, although we don't require it to be. We do require the
- * length to be large enough to hold the file name(s) of the dentry;
- * additionally, a warning is issued if this field is larger than the
- * aligned size.
- */
- u64 length;
-
- /* The offset, from the start of the uncompressed WIM metadata resource
- * for this image, of this dentry's child dentries. 0 if the directory
- * entry has no children, which is the case for regular files or reparse
- * points. */
- u64 subdir_offset;
-
- /* Pointer to the UTF-16LE short filename (malloc()ed buffer) */
- utf16lechar *short_name;
-
- /* Pointer to the UTF-16LE filename (malloc()ed buffer). */
- utf16lechar *file_name;
-
- /* Full path of this dentry */
- tchar *_full_path;
-};
-
-#define rbnode_dentry(node) container_of(node, struct wim_dentry, rb_node)
-
-/*
- * WIM inode.
- *
- * As mentioned above, in the WIM file that is no on-disk analogue of a real
- * inode, as most of these fields are duplicated in the dentries.
- */
-struct wim_inode {
- /* Timestamps for the inode. The timestamps are the number of
- * 100-nanosecond intervals that have elapsed since 12:00 A.M., January
- * 1st, 1601, UTC. This is the same format used in NTFS inodes. */
- u64 i_creation_time;
- u64 i_last_access_time;
- u64 i_last_write_time;
-
- /* The file attributes associated with this inode. This is a bitwise OR
- * of the FILE_ATTRIBUTE_* flags. */
- u32 i_attributes;
-
- /* The index of the security descriptor in the WIM image's table of
- * security descriptors that contains this file's security information.
- * If -1, no security information exists for this file. */
- int32_t i_security_id;
-
- /* %true iff the inode's lookup table entries has been resolved (i.e.
- * the @lte field is valid, but the @hash field is not valid)
- *
- * (This is not an on-disk field.) */
- u8 i_resolved : 1;
-
- /* %true iff verify_inode() has run on this inode. */
- u8 i_verified : 1;
-
- u8 i_visited : 1;
-
- /* Used only in NTFS-mode extraction */
- u8 i_dos_name_extracted : 1;
-
- /* 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;
-
- /* Number of alternate data streams associated with this inode */
- u16 i_num_ads;
-
- /* Unused/unknown fields that we just read into memory so we can
- * re-write them unchanged. */
- u64 i_unused_1;
- u64 i_unused_2;
- u32 i_rp_unknown_1;
- u16 i_rp_unknown_2;
-
- /* A hash of the file's contents, or a pointer to the lookup table entry
- * for this dentry if the lookup table entries have been resolved.
- *
- * More specifically, this is for the un-named default file stream, as
- * opposed to the alternate (named) file streams, which may have their
- * own lookup table entries. */
- union {
- u8 i_hash[SHA1_HASH_SIZE];
- struct wim_lookup_table_entry *i_lte;
- };
-
- /* 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;
-
- /* Number of dentries that reference this inode */
- u32 i_nlink;
-
- /* Alternate data stream entries. */
- struct wim_ads_entry *i_ads_entries;
-
- /* Inode number */
- u64 i_ino;
-
- /* Device number, used only during image capture */
- u64 i_devno;
-
- /* List of dentries that reference this inode (there should be
- * link_count of them) */
- struct list_head i_dentry;
-
- union {
- struct hlist_node i_hlist;
- struct list_head i_list;
- };
-
- tchar *i_extracted_file;
-
- /* Root of a red-black tree storing the children of this inode (if
- * non-empty, implies the inode is a directory, although that is also
- * noted in the @attributes field.) */
- struct rb_root i_children;
-
- /* Next alternate data stream ID to be assigned */
- u32 i_next_stream_id;
-
-#ifdef WITH_FUSE
- /* wimfs file descriptors table for the inode */
- u16 i_num_opened_fds;
- u16 i_num_allocated_fds;
- struct wimfs_fd **i_fds;
- /* This mutex protects the inode's file descriptors table during
- * read-only mounts. Read-write mounts are still restricted to 1
- * thread. */
- pthread_mutex_t i_mutex;
-#endif
-};
-
-#define inode_for_each_dentry(dentry, inode) \
- list_for_each_entry((dentry), &(inode)->i_dentry, d_alias)
-
-#define inode_add_dentry(dentry, inode) \
- list_add_tail(&(dentry)->d_alias, &(inode)->i_dentry)
-
-#define inode_first_dentry(inode) \
- container_of(inode->i_dentry.next, struct wim_dentry, d_alias)
-
-static inline bool
-dentry_is_first_in_inode(const struct wim_dentry *dentry)
-{
- return inode_first_dentry(dentry->d_inode) == dentry;
-}
-
-extern u64
-dentry_correct_total_length(const struct wim_dentry *dentry);
-
-extern int
-for_dentry_in_tree(struct wim_dentry *root,
- int (*visitor)(struct wim_dentry*, void*),
- void *args);
-
-extern int
-for_dentry_in_rbtree(struct rb_node *node,
- int (*visitor)(struct wim_dentry *, void *),
- void *arg);
-
-static inline int
-for_dentry_child(const struct wim_dentry *dentry,
- int (*visitor)(struct wim_dentry *, void *),
- void *arg)
-{
- return for_dentry_in_rbtree(dentry->d_inode->i_children.rb_node,
- visitor,
- arg);
-}
-
-extern int
-for_dentry_in_tree_depth(struct wim_dentry *root,
- int (*visitor)(struct wim_dentry*, void*),
- void *args);
-
-extern void
-calculate_subdir_offsets(struct wim_dentry *dentry, u64 *subdir_offset_p);
-
-extern int
-set_dentry_name(struct wim_dentry *dentry, const tchar *new_name);
-
-extern struct wim_dentry *
-get_dentry(struct WIMStruct *w, const tchar *path);
-
-extern struct wim_inode *
-wim_pathname_to_inode(struct WIMStruct *w, const tchar *path);
-
-extern struct wim_dentry *
-get_dentry_child_with_name(const struct wim_dentry *dentry,
- const tchar *name);
-
-extern struct wim_dentry *
-get_dentry_child_with_utf16le_name(const struct wim_dentry *dentry,
- const utf16lechar *name,
- size_t name_nbytes);
-
-extern struct wim_dentry *
-get_parent_dentry(struct WIMStruct *w, const tchar *path);
-
-extern int
-print_dentry(struct wim_dentry *dentry, void *lookup_table);
-
-extern int
-print_dentry_full_path(struct wim_dentry *entry, void *ignore);
-
-extern int
-calculate_dentry_tree_full_paths(struct wim_dentry *root);
-
-extern tchar *
-dentry_full_path(struct wim_dentry *dentry);
-
-extern struct wim_inode *
-new_timeless_inode();
-
-extern int
-new_dentry(const tchar *name, struct wim_dentry **dentry_ret);
-
-extern int
-new_dentry_with_inode(const tchar *name, struct wim_dentry **dentry_ret);
-
-extern int
-new_dentry_with_timeless_inode(const tchar *name, struct wim_dentry **dentry_ret);
-
-extern int
-new_filler_directory(const tchar *name, struct wim_dentry **dentry_ret);
-
-extern void
-free_inode(struct wim_inode *inode);
-
-extern void
-free_dentry(struct wim_dentry *dentry);
-
-extern void
-put_dentry(struct wim_dentry *dentry);
-
-extern void
-free_dentry_tree(struct wim_dentry *root,
- struct wim_lookup_table *lookup_table);
-
-extern void
-unlink_dentry(struct wim_dentry *dentry);
-
-extern struct wim_dentry *
-dentry_add_child(struct wim_dentry * restrict parent,
- struct wim_dentry * restrict child);
-
-extern struct wim_ads_entry *
-inode_get_ads_entry(struct wim_inode *inode, const tchar *stream_name,
- u16 *idx_ret);
-
-extern struct wim_ads_entry *
-inode_add_ads_utf16le(struct wim_inode *inode,
- const utf16lechar *stream_name,
- size_t stream_name_nbytes);
-
-extern struct wim_ads_entry *
-inode_add_ads(struct wim_inode *dentry, const tchar *stream_name);
-
-extern int
-inode_add_ads_with_data(struct wim_inode *inode, const tchar *name,
- const void *value, size_t size,
- struct wim_lookup_table *lookup_table);
-
-extern int
-inode_set_unnamed_stream(struct wim_inode *inode, const void *data, size_t len,
- struct wim_lookup_table *lookup_table);
-
-extern void
-inode_remove_ads(struct wim_inode *inode, u16 idx,
- struct wim_lookup_table *lookup_table);
-
-
-#define WIMLIB_UNIX_DATA_TAG "$$__wimlib_UNIX_data"
-#define WIMLIB_UNIX_DATA_TAG_NBYTES (sizeof(WIMLIB_UNIX_DATA_TAG) - 1)
-
-#define WIMLIB_UNIX_DATA_TAG_UTF16LE "$\0$\0_\0_\0w\0i\0m\0l\0i\0b\0_\0U\0N\0I\0X\0_\0d\0a\0t\0a\0"
-#define WIMLIB_UNIX_DATA_TAG_UTF16LE_NBYTES (sizeof(WIMLIB_UNIX_DATA_TAG_UTF16LE) - 1)
-
-/* Format for special alternate data stream entries to store UNIX data for files
- * and directories (see: WIMLIB_ADD_FLAG_UNIX_DATA) */
-struct wimlib_unix_data {
- u16 version; /* Must be 0 */
- u16 uid;
- u16 gid;
- u16 mode;
-} PACKED;
-
-#ifndef __WIN32__
-
-#define NO_UNIX_DATA (-1)
-#define BAD_UNIX_DATA (-2)
-extern int
-inode_get_unix_data(const struct wim_inode *inode,
- struct wimlib_unix_data *unix_data,
- u16 *stream_idx_ret);
-
-#define UNIX_DATA_UID 0x1
-#define UNIX_DATA_GID 0x2
-#define UNIX_DATA_MODE 0x4
-#define UNIX_DATA_ALL (UNIX_DATA_UID | UNIX_DATA_GID | UNIX_DATA_MODE)
-#define UNIX_DATA_CREATE 0x8
-extern int
-inode_set_unix_data(struct wim_inode *inode, uid_t uid, gid_t gid, mode_t mode,
- struct wim_lookup_table *lookup_table, int which);
-#endif
-
-extern int
-read_dentry(const u8 metadata_resource[], u64 metadata_resource_len,
- u64 offset, struct wim_dentry *dentry);
-
-
-extern int
-read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len,
- struct wim_dentry *dentry);
-
-extern u8 *
-write_dentry_tree(const struct wim_dentry *tree, u8 *p);
-
-static inline bool
-dentry_is_root(const struct wim_dentry *dentry)
-{
- return dentry->parent == dentry;
-}
-
-static inline bool
-inode_is_directory(const struct wim_inode *inode)
-{
- return (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY)
- && !(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT);
-}
-
-static inline bool
-dentry_is_directory(const struct wim_dentry *dentry)
-{
- return inode_is_directory(dentry->d_inode);
-}
-
-/* For our purposes, we consider "real" symlinks and "junction points" to both
- * be symlinks. */
-static inline bool
-inode_is_symlink(const struct wim_inode *inode)
-{
- return (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT)
- && (inode->i_reparse_tag == WIM_IO_REPARSE_TAG_SYMLINK ||
- inode->i_reparse_tag == WIM_IO_REPARSE_TAG_MOUNT_POINT);
-}
-
-static inline bool
-inode_is_regular_file(const struct wim_inode *inode)
-{
- return !inode_is_directory(inode) && !inode_is_symlink(inode);
-}
-
-static inline bool
-dentry_is_regular_file(const struct wim_dentry *dentry)
-{
- return inode_is_regular_file(dentry->d_inode);
-}
-
-static inline bool
-inode_has_children(const struct wim_inode *inode)
-{
- return inode->i_children.rb_node != NULL;
-}
-
-static inline bool
-dentry_has_children(const struct wim_dentry *dentry)
-{
- return inode_has_children(dentry->d_inode);
-}
-
-static inline bool
-dentry_has_short_name(const struct wim_dentry *dentry)
-{
- return dentry->short_name_nbytes != 0;
-}
-
-static inline bool
-dentry_has_long_name(const struct wim_dentry *dentry)
-{
- return dentry->file_name_nbytes != 0;
-}
-
-#endif
git://wimlib.net / wimlib / blobdiff