};
#endif
-/*
- * An entry in the lookup table in the WIM file.
+/* An enumerated type that identifies where the stream corresponding to this
+ * lookup table entry is actually located.
*
- * It is used to find data streams for files in the WIM.
+ * If we open a WIM and read its lookup table, the location is set to
+ * RESOURCE_IN_WIM since all the streams will initially be located in the WIM.
+ * However, to deal with problems such as image capture and image mount, we
+ * allow the actual location of the stream to be somewhere else, such as an
+ * external file.
+ */
+enum resource_location {
+ /* The lookup table entry does not correspond to a stream (this state
+ * should exist only temporarily) */
+ RESOURCE_NONEXISTENT = 0,
+
+ /* The stream resource is located in a WIM file. The WIMStruct for the
+ * WIM file will be pointed to by the @wim member. */
+ RESOURCE_IN_WIM,
+
+ /* The stream resource is located in an external file. The name of the
+ * file will be provided by @file_on_disk member. In addition, if
+ * @file_on_disk_fp is not NULL, it will be an open FILE * to the file.
+ * */
+ RESOURCE_IN_FILE_ON_DISK,
+
+ /* The stream resource is located in an external file in the staging
+ * directory for a read-write mount. */
+ RESOURCE_IN_STAGING_FILE,
+
+ /* The stream resource is directly attached in an in-memory buffer
+ * pointed to by @attached_buffer. */
+ RESOURCE_IN_ATTACHED_BUFFER,
+
+ /* The stream resource is located in an NTFS volume. It is identified
+ * by volume, filename, data stream name, and by whether it is a reparse
+ * point or not. @ntfs_loc points to a structure containing this
+ * information. */
+ RESOURCE_IN_NTFS_VOLUME,
+};
+
+/*
+ * An entry in the lookup table in the WIM file.
+ *
+ * It is used to find data streams for files in the WIM.
*
* Metadata resources and reparse point data buffers will also have lookup table
* entries associated with the data.
*
* The lookup_table_entry for a given dentry or alternate stream entry in the
- * WIM is found using the SHA1 message digest field.
+ * WIM is found using the SHA1 message digest field.
*/
struct lookup_table_entry {
*/
u16 part_number;
- /* An enumerated type that identifies where the stream corresponding to
- * this lookup table entry is actually located.
- *
- * Obviously if we open a WIM and read its lookup table, the location is
- * set to RESOURCE_IN_WIM since all the streams will initially be
- * located in the WIM. However, to deal with problems such as image
- * capture and image mount, we allow the actual location of the stream
- * to be somewhere else, such as an external file.
- */
- enum {
- /* The lookup table entry does not correspond to a stream (this
- * state should exist only temporarily) */
- RESOURCE_NONEXISTENT = 0,
-
- /* The stream resource is located in a WIM file. The WIMStruct
- * for the WIM file will be pointed to by the @wim member. */
- RESOURCE_IN_WIM,
-
- /* The stream resource is located in an external file. The
- * name of the file will be provided by @file_on_disk member.
- * In addition, if @file_on_disk_fp is not NULL, it will be an
- * open FILE * to the file. */
- RESOURCE_IN_FILE_ON_DISK,
-
- /* The stream resource is located in an external file in the
- * staging directory for a read-write mount. */
- RESOURCE_IN_STAGING_FILE,
-
- /* The stream resource is directly attached in an in-memory
- * buffer pointed to by @attached_buffer. */
- RESOURCE_IN_ATTACHED_BUFFER,
-
- /* The stream resource is located in an NTFS volume. It is
- * identified by volume, filename, data stream name, and by
- * whether it is a reparse point or not. @ntfs_loc points to a
- * structure containing this information. */
- RESOURCE_IN_NTFS_VOLUME,
- } resource_location;
+ /* See enum resource_location above */
+ u16 resource_location;
/* (On-disk field)
* Number of times this lookup table entry is referenced by dentries.
size_t hash_short;
};
+ #ifdef WITH_FUSE
+ u16 num_opened_fds;
+ #endif
+
/* Pointers to somewhere where the stream is actually located. See the
* comments for the @resource_location field above. */
union {
* RESOURCE_IN_STAGING_FILE) */
struct inode *lte_inode;
};
-#ifdef WITH_FUSE
- u16 num_opened_fds;
-#endif
/* When a WIM file is written, out_refcnt starts at 0 and is incremented
* whenever the file resource pointed to by this lookup table entry
u32 real_refcnt;
- /* When a WIM file is written, @output_resource_entry is filled
- * in with the resource entry for the output WIM. This will not
- * necessarily be the same as the @resource_entry since:
- * - The stream may have a different offset in the new WIM
- * - The stream may have a different compressed size in the
- * new WIM if the compression type changed
- */
- struct resource_entry output_resource_entry;
-
- /* This field is used for the special hardlink or symlink image
- * extraction mode. In these mode, all identical files are linked
- * together, and @extracted_file will be set to the filename of the
- * first extracted file containing this stream. */
- char *extracted_file;
+ union {
+ /* When a WIM file is written, @output_resource_entry is filled
+ * in with the resource entry for the output WIM. This will not
+ * necessarily be the same as the @resource_entry since: - The
+ * stream may have a different offset in the new WIM - The
+ * stream may have a different compressed size in the new WIM if
+ * the compression type changed
+ */
+ struct resource_entry output_resource_entry;
+
+ struct list_head msg_list;
+ struct list_head dentry_list;
+ };
union {
+ /* This field is used for the special hardlink or symlink image
+ * extraction mode. In these mode, all identical files are linked
+ * together, and @extracted_file will be set to the filename of the
+ * first extracted file containing this stream. */
+ struct {
+ char *extracted_file;
+ bool extracted;
+ };
+
/* 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;
-
- /* Temporary field for creating a singly linked list. */
- struct lookup_table_entry *next_lte_in_swm;
};
};
return lte->resource_entry.original_size;
}
+static inline u64 wim_resource_chunks(const struct lookup_table_entry *lte)
+{
+ return (wim_resource_size(lte) + WIM_CHUNK_SIZE - 1) / WIM_CHUNK_SIZE;
+}
+
static inline u64
wim_resource_compressed_size(const struct lookup_table_entry *lte)
{
extern struct lookup_table *new_lookup_table(size_t capacity);
-extern void lookup_table_insert(struct lookup_table *table,
+extern void lookup_table_insert(struct lookup_table *table,
struct lookup_table_entry *lte);
/* Unlinks a lookup table entry from the table; does not free it. */
-static inline void lookup_table_unlink(struct lookup_table *table,
+static inline void lookup_table_unlink(struct lookup_table *table,
struct lookup_table_entry *lte)
{
hlist_del(<e->hash_list);
extern struct lookup_table_entry *new_lookup_table_entry();
-extern int for_lookup_table_entry(struct lookup_table *table,
- int (*visitor)(struct lookup_table_entry *, void *),
+extern struct lookup_table_entry *
+clone_lookup_table_entry(const struct lookup_table_entry *lte);
+
+extern int for_lookup_table_entry(struct lookup_table *table,
+ int (*visitor)(struct lookup_table_entry *, void *),
void *arg);
extern struct lookup_table_entry *
extern void lte_decrement_refcnt(struct lookup_table_entry *lte,
struct lookup_table *table);
-extern void lte_decrement_num_opened_fds(struct lookup_table_entry *lte,
- struct lookup_table *table);
+#ifdef WITH_FUSE
+extern void lte_decrement_num_opened_fds(struct lookup_table_entry *lte);
+#endif
extern int lte_zero_out_refcnt(struct lookup_table_entry *entry, void *ignore);
extern int lte_zero_real_refcnt(struct lookup_table_entry *entry, void *ignore);
-extern int lte_free_extracted_file(struct lookup_table_entry *lte, void *ignone);
+extern int lte_zero_extracted_file(struct lookup_table_entry *lte, void *ignore);
+extern int lte_free_extracted_file(struct lookup_table_entry *lte, void *ignore);
extern void print_lookup_table_entry(const struct lookup_table_entry *entry);
extern void free_lookup_table_entry(struct lookup_table_entry *lte);
extern int dentry_resolve_ltes(struct dentry *dentry, void *__table);
+extern int dentry_unresolve_ltes(struct dentry *dentry, void *ignore);
-/* Writes the lookup table to the output file. */
-static inline int write_lookup_table(struct lookup_table *table, FILE *out)
-{
- return for_lookup_table_entry(table, write_lookup_table_entry, out);
-}
-
-/* Unlinks and frees an entry from a lookup table. */
-static inline void lookup_table_remove(struct lookup_table *table,
- struct lookup_table_entry *lte)
-{
- lookup_table_unlink(table, lte);
- free_lookup_table_entry(lte);
-}
+int write_lookup_table(struct lookup_table *table, FILE *out,
+ struct resource_entry *out_res_entry);
static inline struct resource_entry* wim_metadata_resource_entry(WIMStruct *w)
{
static inline struct lookup_table_entry *
inode_stream_lte_unresolved(const struct inode *inode, unsigned stream_idx,
- const struct lookup_table *table)
+ const struct lookup_table *table)
{
wimlib_assert(!inode->resolved);
wimlib_assert(stream_idx <= inode->num_ads);
inode->ads_entries[
stream_idx - 1].hash);
}
-/*
+/*
* Returns the lookup table entry for stream @stream_idx of the inode, where
* stream_idx = 0 means the default un-named file stream, and stream_idx >= 1
* corresponds to an alternate data stream.
return zero_hash;
}
-/*
+/*
* Returns the hash for stream @stream_idx of the inode, where stream_idx = 0
* means the default un-named file stream, and stream_idx >= 1 corresponds to an
* alternate data stream.
git://wimlib.net / wimlib / blobdiff