X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Fwimlib_internal.h;h=40ff8427675f133de03b90b44f21b6631a749136;hb=8a7aa1e0e77c5fadb2ee4d062b90532f709f7883;hp=e9a10798b273a90f9e732dcf442bc14ef7376e85;hpb=885632f08c75c1d7bb5d25436231c78f6ad7e0c0;p=wimlib diff --git a/src/wimlib_internal.h b/src/wimlib_internal.h index e9a10798..40ff8427 100644 --- a/src/wimlib_internal.h +++ b/src/wimlib_internal.h @@ -2,24 +2,26 @@ * 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. + * + * 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. * - * 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 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 this library; if not, write to the Free Software Foundation, Inc., 59 - * Temple Place, Suite 330, Boston, MA 02111-1307 USA + * 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 @@ -29,7 +31,10 @@ 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 @@ -42,8 +47,8 @@ struct stat; * 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 { @@ -52,13 +57,6 @@ enum wim_integrity_status { WIM_INTEGRITY_NONEXISTENT, }; - -#define RINOK(expr) do { \ - int __ret = (expr); \ - if (__ret != 0) \ - return __ret; \ -} while (0) - /* Metadata for a resource in a WIM file. */ struct resource_entry { /* Size, in bytes, of the resource in the WIM file. */ @@ -117,10 +115,10 @@ struct wim_header { u8 guid[WIM_GID_LEN]; /* Part number of the WIM file in a spanned set. */ - //u16 part_number; + u16 part_number; /* Total number of parts in a spanned set. */ - //u16 total_parts; + u16 total_parts; /* Number of images in the WIM file. */ u32 image_count; @@ -188,10 +186,9 @@ struct wim_header { #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. */ @@ -205,49 +202,52 @@ typedef struct WIMSecurityData { /* 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; + /* Hard link group table */ + struct link_group_table *lgt; + + /* A pointer to the lookup table entry for this image's metadata + * resource. */ + struct lookup_table_entry *metadata_lte; /* 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; @@ -259,22 +259,22 @@ typedef struct WIMStruct { * 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; + /* The header of the WIM file. */ + struct wim_header hdr; - /* Name of the output directory for extraction. */ - char *output_dir; + /* Temporary flags to use when extracting a WIM image or adding a WIM + * image. */ + union { + int extract_flags; + int add_flags; + }; - /* Set to true when extracting multiple images */ - bool is_multi_image_extraction; + /* 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; + bool write_metadata; } WIMStruct; @@ -290,17 +290,15 @@ static inline struct dentry **wim_root_dentry_p(WIMStruct *w) 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. */ @@ -314,20 +312,24 @@ static inline struct image_metadata *wim_get_current_image_metadata(WIMStruct *w 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); +int link_groups_free_duplicate_data(struct link_group_table *table); + /* header.c */ -extern int read_header(FILE *fp, struct wim_header *hdr); +extern int read_header(FILE *fp, struct wim_header *hdr, int split_ok); extern int write_header(const struct wim_header *hdr, FILE *out); extern int init_header(struct wim_header *hdr, int ctype); @@ -337,6 +339,9 @@ extern int write_integrity_table(FILE *out, u64 end_header_offset, 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); @@ -360,45 +365,61 @@ extern int extract_full_resource_to_fd(WIMStruct *w, 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, + struct lookup_table_entry **lte_ret); /* wim.c */ +extern WIMStruct *new_wim_struct(); extern int wimlib_select_image(WIMStruct *w, int image); -extern void wimlib_destroy(WIMStruct *w); extern int wim_hdr_flags_compression_type(int wim_hdr_flags); extern int wim_resource_compression_type(const WIMStruct *w, const struct resource_entry *entry); extern int for_image(WIMStruct *w, int image, int (*visitor)(WIMStruct *)); /* write.c */ -extern int write_resource_from_memory(const u8 resource[], int out_ctype, - u64 resource_original_size, FILE *out, - u64 *resource_size_ret); +extern int finish_write(WIMStruct *w, int image, int flags, + int write_lookup_table); + +extern int begin_write(WIMStruct *w, const char *path, int flags); #include "wimlib.h"