#define _WIMLIB_DENTRY_H
#include "util.h"
+#include "config.h"
+#include "list.h"
#include <string.h>
+
+struct stat;
+struct lookup_table;
+typedef struct WIMStruct WIMStruct;
+
/* Size of the struct dentry up to and including the file_name_len. */
-#define WIM_DENTRY_DISK_SIZE 102
+#define WIM_DENTRY_DISK_SIZE 102
+
+#define WIM_ADS_ENTRY_DISK_SIZE 38
+
+#ifndef WIM_HASH_SIZE
+#define WIM_HASH_SIZE 20
+#endif
-#define WIM_ADS_ENTRY_DISK_SIZE (2 * sizeof(u64) + WIM_HASH_SIZE + sizeof(u16))
+/*
+ * 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 */
struct ads_entry {
u16 stream_name_len;
/* Length of stream name (UTF-8) */
- u16 stream_name_len_utf8;
+ u16 stream_name_utf8_len;
/* Stream name (UTF-16) */
char *stream_name;
static inline u64 ads_entry_length(const struct ads_entry *entry)
{
- return WIM_ADS_ENTRY_DISK_SIZE + entry->stream_name_len;
+ u64 len = WIM_ADS_ENTRY_DISK_SIZE + entry->stream_name_len + 2;
+ return (len + 7) & ~7;
+}
+
+static inline void destroy_ads_entry(struct ads_entry *entry)
+{
+ FREE(entry->stream_name);
+ FREE(entry->stream_name_utf8);
+ memset(entry, 0, sizeof(entry));
+}
+
+static inline bool ads_entry_has_name(const struct ads_entry *entry,
+ const char *name, size_t name_len)
+{
+ if (entry->stream_name_utf8_len != name_len)
+ return false;
+ return memcmp(entry->stream_name_utf8, name, name_len) == 0;
}
+
/* In-memory structure for a directory entry. There is a directory tree for
* each image in the WIM. */
struct dentry {
u64 subdir_offset;
/* Reserved for future disuse. Currently ignoring these fields. */
- //u64 unused1;
- //u64 unused2;
+ u64 unused1;
+ u64 unused2;
/* Timestamps for the entry. The timestamps are the number of
* 100-nanosecond intervals that have elapsed since 12:00 A.M., January
/* Although M$'s documentation does not tell you this, it seems that the
* reparse_reserved field does not actually exist. So the hard_link
- * field directly follows the reparse_tag on disk. */
+ * field directly follows the reparse_tag on disk. EXCEPT when the
+ * dentry is actually a reparse point... well, just take a look at the
+ * read_dentry() function. */
//u32 reparse_reserved;
/* If the reparse_reserved field existed, there would be a 4-byte gap
/* Alternate stream entries for this dentry. */
struct ads_entry *ads_entries;
- /* Number of references to the dentry tree itself, as in multiple
- * WIMStructs */
- int refcnt;
+ union {
+ /* Number of references to the dentry tree itself, as in multiple
+ * WIMStructs */
+ int refcnt;
+
+ /* Number of times this dentry has been opened (only for
+ * directories!) */
+ u32 num_times_opened;
+ };
+
+ /* List of dentries in the hard link set */
+ enum {
+ GROUP_INDEPENDENT,
+ GROUP_MASTER,
+ GROUP_SLAVE
+ } link_group_master_status;
+ struct list_head link_group_list;
};
-#define WIM_FILE_ATTRIBUTE_READONLY 0x00000001
-#define WIM_FILE_ATTRIBUTE_HIDDEN 0x00000002
-#define WIM_FILE_ATTRIBUTE_SYSTEM 0x00000004
-#define WIM_FILE_ATTRIBUTE_DIRECTORY 0x00000010
-#define WIM_FILE_ATTRIBUTE_ARCHIVE 0x00000020
-#define WIM_FILE_ATTRIBUTE_DEVICE 0x00000040
-#define WIM_FILE_ATTRIBUTE_NORMAL 0x00000080
-#define WIM_FILE_ATTRIBUTE_TEMPORARY 0x00000100
-#define WIM_FILE_ATTRIBUTE_SPARSE_FILE 0x00000200
-#define WIM_FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
-#define WIM_FILE_ATTRIBUTE_COMPRESSED 0x00000800
-#define WIM_FILE_ATTRIBUTE_OFFLINE 0x00001000
-#define WIM_FILE_ATTRIBUTE_NOT_CONTENT_INDEXED 0x00002000
-#define WIM_FILE_ATTRIBUTE_ENCRYPTED 0x00004000
-#define WIM_FILE_ATTRIBUTE_VIRTUAL 0x00010000
+/* Return hash of the "unnamed" (default) data stream. */
+static inline const u8 *dentry_hash(const struct dentry *dentry)
+{
+ /* If there are alternate data streams, the dentry hash field is zeroed
+ * out, and we need to find the hash in the un-named data stream (should
+ * be the first one, but check them in order just in case, and fall back
+ * to the dentry hash field if we can't find an unnamed data stream). */
+ for (u16 i = 0; i < dentry->num_ads; i++)
+ if (dentry->ads_entries[i].stream_name_len == 0)
+ return dentry->ads_entries[i].hash;
+ return dentry->hash;
+}
+
+static inline size_t dentry_link_group_size(const struct dentry *dentry)
+{
+ const struct list_head *cur = &dentry->link_group_list;
+ size_t size = 0;
+ do {
+ size++;
+ cur = cur->next;
+ } while (cur != &dentry->link_group_list);
+ return size;
+}
+
+extern struct ads_entry *dentry_get_ads_entry(struct dentry *dentry,
+ const char *stream_name);
+
+extern struct ads_entry *dentry_add_ads(struct dentry *dentry,
+ const char *stream_name);
+
+extern void dentry_remove_ads(struct dentry *dentry, struct ads_entry *entry);
+
+extern const char *path_stream_name(const char *path);
+
+extern u64 dentry_total_length(const struct dentry *dentry);
extern void stbuf_to_dentry(const struct stat *stbuf, struct dentry *dentry);
-extern void dentry_to_stbuf(const struct dentry *dentry, struct stat *stbuf,
- const struct lookup_table *table);
+extern int dentry_to_stbuf(const struct dentry *dentry, struct stat *stbuf,
+ const struct lookup_table *table);
extern int for_dentry_in_tree(struct dentry *root,
int (*visitor)(struct dentry*, void*),
extern int calculate_dentry_full_path(struct dentry *dentry, void *ignore);
extern void calculate_subdir_offsets(struct dentry *dentry, u64 *subdir_offset_p);
+extern int get_names(char **name_utf16_ret, char **name_utf8_ret,
+ u16 *name_utf16_len_ret, u16 *name_utf8_len_ret,
+ const char *name);
extern int change_dentry_name(struct dentry *dentry, const char *new_name);
+extern int change_ads_name(struct ads_entry *entry, const char *new_name);
extern void unlink_dentry(struct dentry *dentry);
extern void link_dentry(struct dentry *dentry, struct dentry *parent);
extern void init_dentry(struct dentry *dentry, const char *name);
extern struct dentry *new_dentry(const char *name);
+extern void dentry_free_ads_entries(struct dentry *dentry);
extern void free_dentry(struct dentry *dentry);
+extern void put_dentry(struct dentry *dentry);
+extern int share_dentry_ads(struct dentry *master,
+ struct dentry *slave);
+extern struct dentry *clone_dentry(struct dentry *old);
extern void free_dentry_tree(struct dentry *root,
struct lookup_table *lookup_table,
bool lt_decrement_refcnt);
extern u8 *write_dentry_tree(const struct dentry *tree, u8 *p);
+
/* Inline utility functions for WIMDentries */
-/*
- * Returns true if @dentry has the UTF-8 file name @name that has length
- * @name_len.
- */
-static inline bool dentry_has_name(const struct dentry *dentry, const char *name,
- size_t name_len)
-{
- if (dentry->file_name_utf8_len != name_len)
- return false;
- return memcmp(dentry->file_name_utf8, name, name_len) == 0;
-}
static inline bool dentry_is_root(const struct dentry *dentry)
{
static inline bool dentry_is_directory(const struct dentry *dentry)
{
- return (dentry->attributes & WIM_FILE_ATTRIBUTE_DIRECTORY) != 0;
+ return (dentry->attributes & FILE_ATTRIBUTE_DIRECTORY)
+ && !(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT);
+}
+
+/* For our purposes, we consider "real" symlinks and "junction points" to both
+ * be symlinks. */
+static inline bool dentry_is_symlink(const struct dentry *dentry)
+{
+ return (dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT)
+ && ((dentry->reparse_tag == WIM_IO_REPARSE_TAG_SYMLINK) ||
+ dentry->reparse_tag == WIM_IO_REPARSE_TAG_MOUNT_POINT);
}
static inline bool dentry_is_regular_file(const struct dentry *dentry)
{
- return !dentry_is_directory(dentry);
+ return !dentry_is_directory(dentry) && !dentry_is_symlink(dentry);
}
static inline bool dentry_is_empty_directory(const struct dentry *dentry)
git://wimlib.net / wimlib / blobdiff