X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=include%2Fwimlib%2Fresource.h;h=5572f523819b2b844025c6c562fccae967241153;hp=61ce69b5e22f337affc15bea35288162923089e3;hb=894f8dab7f174bf289e6b5e9ea54374d10d6e62f;hpb=a141cf94ae7562406ea1bc32c026ac85b37751a6 diff --git a/include/wimlib/resource.h b/include/wimlib/resource.h index 61ce69b5..5572f523 100644 --- a/include/wimlib/resource.h +++ b/include/wimlib/resource.h @@ -10,17 +10,17 @@ struct filedes; struct wim_lookup_table_entry; struct wim_image_metadata; -/* Specification of a resource in a WIM file. +/* + * Specification of a resource in a WIM file. * - * If a `struct wim_lookup_table_entry' lte has - * (lte->resource_location == RESOURCE_IN_WIM), then lte->wim_res_spec points to - * an instance of this structure. + * If a `struct wim_lookup_table_entry' lte has (lte->resource_location == + * RESOURCE_IN_WIM), then lte->rspec points to an instance of this structure. * - * Normally, there is a one-to-one correspondence between WIM lookup table - * entries ("streams", each of which may be the contents of a file, for example) - * and WIM resources. However, WIM resources with the - * WIM_RESHDR_FLAG_PACKED_STREAMS flag set may actually contain multiple streams - * compressed together. */ + * Normally, there is a one-to-one correspondence between lookup table entries + * ("streams", each of which may be the contents of a file, for example) and + * resources. However, a resource with the WIM_RESHDR_FLAG_SOLID flag set is a + * "solid" resource that may contain multiple streams compressed together. + */ struct wim_resource_spec { /* The WIM containing this resource. @wim->in_fd is expected to be a * file descriptor to the underlying WIM file, opened for reading. */ @@ -97,32 +97,30 @@ struct wim_reshdr { * or XML data for the WIM. */ #define WIM_RESHDR_FLAG_METADATA 0x02 -/* The resource is compressed using the WIM's default compression type and uses - * the regular chunk table format. */ +/* The resource is a non-solid resource compressed using the WIM's default + * compression type. */ #define WIM_RESHDR_FLAG_COMPRESSED 0x04 /* Unknown meaning; may be intended to indicate a partial stream. Currently * ignored by wimlib. */ #define WIM_RESHDR_FLAG_SPANNED 0x08 -/* The resource is packed in a special format that may contain multiple - * underlying streams, or this resource entry represents a stream packed into - * one such resource. When resources have this flag set, the WIM version number - * should be WIM_VERSION_PACKED_STREAMS. */ -#define WIM_RESHDR_FLAG_PACKED_STREAMS 0x10 +/* The resource is a solid compressed resource which may contain multiple + * streams. This flag is only allowed if the WIM version number is + * WIM_VERSION_SOLID. */ +#define WIM_RESHDR_FLAG_SOLID 0x10 /* Magic number in the 'uncompressed_size' field of the resource header that - * identifies the main entry for a pack. */ -#define WIM_PACK_MAGIC_NUMBER 0x100000000ULL + * identifies the main entry for a solid resource. */ +#define SOLID_RESOURCE_MAGIC_NUMBER 0x100000000ULL -/* Returns true if the specified WIM resource is compressed, using either the - * original chunk table layout or the alternate layout for resources that may - * contain multiple packed streams. */ +/* Returns true if the specified WIM resource is compressed (may be either solid + * or non-solid) */ static inline bool resource_is_compressed(const struct wim_resource_spec *rspec) { return (rspec->flags & (WIM_RESHDR_FLAG_COMPRESSED | - WIM_RESHDR_FLAG_PACKED_STREAMS)); + WIM_RESHDR_FLAG_SOLID)); } static inline void @@ -153,8 +151,8 @@ void put_wim_reshdr(const struct wim_reshdr *reshdr, struct wim_reshdr_disk *disk_reshdr); -/* Alternate chunk table format for resources with - * WIM_RESHDR_FLAG_PACKED_STREAMS set. */ +/* Alternate chunk table format for resources with WIM_RESHDR_FLAG_SOLID set. + */ struct alt_chunk_table_header_disk { /* Uncompressed size of the resource in bytes. */ le64 res_usize;