/* Size of each lookup table entry in the WIM file. */
#define WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE 50
-#define LOOKUP_FLAG_ADS_OK
+#define LOOKUP_FLAG_ADS_OK 0x00000001
+#define LOOKUP_FLAG_DIRECTORY_OK 0x00000002
+#define LOOKUP_FLAG_FOLLOW_SYMLINKS 0x00000004
/* A lookup table that is used to translate the hash codes of dentries into the
u64 capacity;
};
-/* An entry in the lookup table in the WIM file. */
+struct wimlib_fd;
+
+
+/*
+ * An entry in the lookup table in the WIM file.
+ *
+ * It is used to find data streams for files in the WIM.
+ *
+ * The lookup_table_entry for a given dentry in the WIM is found using the SHA1
+ * message digest field.
+ */
struct lookup_table_entry {
/* The next struct lookup_table_entry in the hash bucket. NULL if this is the
/* Currently ignored; set to 1 in new lookup table entries. */
u16 part_number;
- /* Number of times this lookup table entry is referenced by dentries. */
- u32 refcnt;
-
/* If %true, this lookup table entry corresponds to a symbolic link
* reparse buffer. @symlink_reparse_data_buf will give the target of
* the symbolic link. */
bool is_symlink;
+ /* Number of times this lookup table entry is referenced by dentries. */
+ u32 refcnt;
+
union {
/* SHA1 hash of the file resource pointed to by this lookup
* table entry */
int other_wim_ctype;
};
- struct { /* Used for read-write mounts. */
-
-
- /* Offset of the stream file_on_disk_fd. */
- off_t staging_offset;
-
+ struct { /* Used for wimlib_mount */
- /* If file_on_disk_fd, if it is not -1, is the file
- * descriptor, opened for reading, for file_on_disk. */
- int staging_fd;
-
- /* Number of times the file has been opened.
- * file_on_disk_fd can be closed when num_times_opened
- * is decremented to 0. */
- int staging_num_times_opened;
+ /* File descriptors table for this data stream */
+ struct wimlib_fd **fds;
+ u16 num_allocated_fds;
+ u16 num_opened_fds;
};
};
*
* output_resource_entry is the struct resource_entry for the position of the
* file resource when written to the output file. */
- union {
- u32 out_refcnt;
- bool refcnt_is_incremented;
- };
+ u32 out_refcnt;
struct resource_entry output_resource_entry;
+
+ /* Circular linked list of streams that share the same lookup table
+ * entry
+ *
+ * This list of streams may include streams from different hard link
+ * sets that happen to be the same. */
+ struct list_head lte_group_list;
+
+ /* List of lookup table entries that correspond to streams that have
+ * been extracted to the staging directory when modifying a read-write
+ * mounted WIM. */
+ struct list_head staging_list;
};
extern struct lookup_table *new_lookup_table(size_t capacity);
extern void lookup_table_unlink(struct lookup_table *table,
struct lookup_table_entry *lte);
-extern void lookup_table_decrement_refcnt(struct lookup_table* table,
- const u8 hash[]);
+extern struct lookup_table_entry *
+lookup_table_decrement_refcnt(struct lookup_table* table, const u8 hash[]);
+
+extern struct lookup_table_entry *
+lte_decrement_refcnt(struct lookup_table_entry *lte,
+ struct lookup_table *table);
extern struct lookup_table_entry *new_lookup_table_entry();
int (*visitor)(struct lookup_table_entry *, void *),
void *arg);
-extern struct lookup_table_entry *lookup_resource(const struct lookup_table *table,
- const u8 hash[]);
-
-static inline struct lookup_table_entry *
-wim_lookup_resource(const WIMStruct *w, const struct dentry *dentry)
-{
- return lookup_resource(w->lookup_table, dentry->hash);
-}
+extern struct lookup_table_entry *
+__lookup_resource(const struct lookup_table *lookup_table, const u8 hash[]);
+extern int lookup_resource(WIMStruct *w, const char *path,
+ int lookup_flags, struct dentry **dentry_ret,
+ struct lookup_table_entry **lte_ret,
+ unsigned *stream_idx_ret);
extern int zero_out_refcnts(struct lookup_table_entry *entry, void *ignore);
extern int write_lookup_table_entry(struct lookup_table_entry *lte, void *__out);
-static inline void free_lookup_table_entry(struct lookup_table_entry *lte)
-{
- if (lte) {
- FREE(lte->file_on_disk);
- FREE(lte);
- }
-}
+extern void free_lookup_table_entry(struct lookup_table_entry *lte);
+
+extern int dentry_resolve_ltes(struct dentry *dentry, void *__table);
/* Writes the lookup table to the output file. */
static inline int write_lookup_table(struct lookup_table *table, FILE *out)