* wimlib_internal.h
*
* Internal header for wimlib.
- *
- * wimlib - Library for working with WIM files
- *
+ */
+
+/*
* Copyright (C) 2010 Carl Thijssen
* Copyright (C) 2012 Eric Biggers
*
- * This library is free software; you can redistribute it and/or modify it under
- * the terms of the GNU Lesser General Public License as published by the Free
- * Software Foundation; either version 2.1 of the License, or (at your option) any
- * later version.
+ * This file is part of wimlib, a library for working with WIM files.
*
- * This library is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
- * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ * wimlib is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 2.1 of the License, or (at your option)
+ * any later version.
*
- * You should have received a copy of the GNU Lesser General Public License along
- * with this library; if not, write to the Free Software Foundation, Inc., 59
- * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
#ifndef _WIMLIB_INTERNAL_H
struct stat;
+#ifndef WIM_HASH_SIZE
#define WIM_HASH_SIZE 20
+#endif
+
#define WIM_MAGIC_LEN 8
#define WIM_GID_LEN 16
#define WIM_UNUSED_LEN 60
* of this size. */
#define WIM_CHUNK_SIZE 32768
-/* Version of the WIM file. I don't know if there has ever been a different
- * version or not. */
+/* Version of the WIM file. There is an older version, but we don't support it
+ * yet. The differences between the versions are undocumented. */
#define WIM_VERSION 0x10d00
enum wim_integrity_status {
#define WIM_HDR_FLAG_COMPRESS_LZX 0x00040000
-#if 0
/* Structure for security data. Each image in the WIM file has its own security
* data. */
-typedef struct WIMSecurityData {
+struct wim_security_data {
/* The total length of the security data, in bytes. A typical size is
* 2048 bytes. If there is no security data, though (as in the WIMs
* that wimlib writes, currently), it will be 8 bytes. */
/* Array of descriptors. */
u8 **descriptors;
+
+ /* keep track of how many WIMs reference this security data (used when
+ * exporting images between WIMs) */
+ u32 refcnt;
} WIMSecurityData;
-#endif
+
+struct link_group_table;
+
/* Metadata resource for an image. */
struct image_metadata {
+ /* Pointer to the root dentry for the image. */
+ struct dentry *root_dentry;
-#if 0
- /* The security data for the image. */
- WIMSecurityData security_data;
-#endif
+ /* Pointer to the security data for the image. */
+ struct wim_security_data *security_data;
- /* The root dentry for the image. */
- struct dentry *root_dentry;
+ /* A pointer to the lookup table entry for this image's metadata
+ * resource. */
+ struct lookup_table_entry *metadata_lte;
+
+ /* Hard link group table */
+ struct link_group_table *lgt;
/* True if the filesystem of the image has been modified. If this is
* the case, the memory for the filesystem is not freed when switching
* to a different WIM image. */
bool modified;
- /* A pointer to the lookup table entry for this image's metadata
- * resource. */
- struct lookup_table_entry *lookup_table_entry;
};
/* The opaque structure exposed to the wimlib API. */
typedef struct WIMStruct {
- /* The name of the WIM file that has been opened. */
- char *filename;
/* A pointer to the file indicated by @filename, opened for reading. */
FILE *fp;
- /* The currently selected image, indexed starting at 1. If not 0,
- * subtract 1 from this to get the index of the current image in the
- * image_metadata array. */
- int current_image;
+ /* FILE pointer for the WIM file that is being written. */
+ FILE *out_fp;
+
+ /* The name of the WIM file that has been opened. */
+ char *filename;
/* The lookup table for the WIM file. */
struct lookup_table *lookup_table;
- /* The header of the WIM file. */
- struct wim_header hdr;
-
/* Pointer to the XML data read from the WIM file. */
u8 *xml_data;
* WIM has a image metadata associated with it. */
struct image_metadata *image_metadata;
- /* True if files names are to be printed when doing extraction.
- * May be used for other things later. */
- bool verbose;
-
- /* The type of links to create when extracting files (hard, symbolic, or
- * none.) */
- int link_type;
-
/* Name of the output directory for extraction. */
char *output_dir;
- /* Set to true when extracting multiple images */
- bool is_multi_image_extraction;
+ /* The header of the WIM file. */
+ struct wim_header hdr;
+
+ /* Temporary flags to use when extracting a WIM image or adding a WIM
+ * image. */
+ union {
+ int extract_flags;
+ int add_flags;
+ };
- /* FILE pointer for the WIM file that is being written. */
- FILE *out_fp;
+ /* The currently selected image, indexed starting at 1. If not 0,
+ * subtract 1 from this to get the index of the current image in the
+ * image_metadata array. */
+ int current_image;
+
+ union {
+ /* Set to true when extracting multiple images */
+ bool is_multi_image_extraction;
+
+ bool write_metadata;
+ };
} WIMStruct;
return &w->image_metadata[w->current_image - 1].root_dentry;
}
-#if 0
-static inline WIMSecurityData *wim_security_data(WIMStruct *w)
+static inline struct wim_security_data *wim_security_data(WIMStruct *w)
{
- return &w->image_metadata[w->current_image - 1].security_data;
+ return w->image_metadata[w->current_image - 1].security_data;
}
-#endif
static inline struct lookup_table_entry*
wim_metadata_lookup_table_entry(WIMStruct *w)
{
- return w->image_metadata[w->current_image - 1].lookup_table_entry;
+ return w->image_metadata[w->current_image - 1].metadata_lte;
}
/* Nonzero if a struct resource_entry indicates a compressed resource. */
return &w->image_metadata[w->current_image - 1];
}
-static inline bool wim_current_image_is_modified(const WIMStruct *w)
-{
- return w->image_metadata[w->current_image - 1].modified;
-}
-
/* Prints a hash code field. */
static inline void print_hash(const u8 hash[])
{
print_byte_field(hash, WIM_HASH_SIZE);
}
+/* hardlink.c */
+
+struct link_group_table *new_link_group_table(u64 capacity);
+int link_group_table_insert(struct dentry *dentry,
+ struct link_group_table *table);
+void free_link_group_table(struct link_group_table *table);
+u64 assign_link_groups(struct link_group_table *table);
+
/* header.c */
extern int read_header(FILE *fp, struct wim_header *hdr, int split_ok);
int show_progress);
extern int check_wim_integrity(WIMStruct *w, int show_progress, int *status);
+/* modify.c */
+extern void destroy_image_metadata(struct image_metadata *imd,
+ struct lookup_table *lt);
/* resource.c */
extern const u8 *get_resource_entry(const u8 *p, struct resource_entry *entry);
const struct resource_entry *entry,
int fd);
-extern int read_metadata_resource(FILE *fp, const struct resource_entry *metadata,
- int wim_ctype, /* WIMSecurityData *sd, */
- struct dentry **root_dentry_p);
+extern int read_metadata_resource(FILE *fp, int wim_ctype,
+ struct image_metadata *image_metadata);
extern int resource_compression_type(int wim_ctype, int reshdr_flags);
static inline int read_full_resource(FILE *fp, u64 resource_size,
- u64 resource_original_size,
- u64 resource_offset,
- int resource_ctype, void *contents_ret)
+ u64 resource_original_size,
+ u64 resource_offset,
+ int resource_ctype, void *contents_ret)
{
return read_resource(fp, resource_size, resource_original_size,
resource_offset, resource_ctype,
resource_original_size, 0, contents_ret);
}
-#if 0
-/* security.c */
-bool read_security_data(const u8 metadata_resource[],
- u64 metadata_resource_len, WIMSecurityData *sd);
+extern int write_dentry_resources(struct dentry *dentry, void *wim_p);
+extern int copy_resource(struct lookup_table_entry *lte, void *w);
+extern int copy_between_files(FILE *in, off_t in_offset, FILE *out, size_t len);
+extern int write_resource_from_memory(const u8 resource[], int out_ctype,
+ u64 resource_original_size, FILE *out,
+ u64 *resource_size_ret);
+extern int write_metadata_resource(WIMStruct *w);
-void print_security_data(const WIMSecurityData *sd);
-u8 *write_security_data(const WIMSecurityData *sd, u8 *p);
-void init_security_data(WIMSecurityData *sd);
-void destroy_security_data(WIMSecurityData *sd);
-#endif
+
+/* security.c */
+int read_security_data(const u8 metadata_resource[],
+ u64 metadata_resource_len, struct wim_security_data **sd_p);
+
+void print_security_data(const struct wim_security_data *sd);
+u8 *write_security_data(const struct wim_security_data *sd, u8 *p);
+void free_security_data(struct wim_security_data *sd);
+
+/* symlink.c */
+ssize_t dentry_readlink(const struct dentry *dentry, char *buf, size_t buf_len,
+ const WIMStruct *w);
+extern void *make_symlink_reparse_data_buf(const char *symlink_target,
+ size_t *len_ret);
+extern int dentry_set_symlink(struct dentry *dentry,
+ const char *target,
+ struct lookup_table *lookup_table);
/* wim.c */
extern WIMStruct *new_wim_struct();
/* write.c */
extern int finish_write(WIMStruct *w, int image, int flags,
int write_lookup_table);
-extern int copy_between_files(FILE *in, off_t in_offset, FILE *out, size_t len);
-extern int write_resource_from_memory(const u8 resource[], int out_ctype,
- u64 resource_original_size, FILE *out,
- u64 *resource_size_ret);
extern int begin_write(WIMStruct *w, const char *path, int flags);
-extern int write_metadata_resource(WIMStruct *w);
#include "wimlib.h"
git://wimlib.net / wimlib / blobdiff