]> wimlib.net Git - wimlib/blobdiff - src/header.c
Split wim_resource_spec from wim_lookup_table_entry
[wimlib] / src / header.c
index 4924b505dfba8f6e455733ddcb0e67722ba70e9f..d3ab360cd3502b4c641b153c62e5da992bc6c1da 100644 (file)
 /*
  * Reads the header from a WIM file.
  *
- * @filename
- *     Name of the WIM file (for error/debug messages only), or NULL if reading
- *     directly from file descriptor.
- * @in_fd
- *     File descriptor, positioned at offset 0, to read the header from.
+ * @wim
+ *     WIM to read the header from; @wim->in_fd must be positioned at the
+ *     offset at which to read the header.
+ *
  * @hdr
  *     Structure to read the header into.
  *
  * Return values:
  *     WIMLIB_ERR_SUCCESS (0)
  *     WIMLIB_ERR_IMAGE_COUNT
- *     WIMLIB_ERR_INVALID_CHUNK_SIZE
  *     WIMLIB_ERR_INVALID_PART_NUMBER
  *     WIMLIB_ERR_NOT_A_WIM_FILE
  *     WIMLIB_ERR_READ
  *     WIMLIB_ERR_UNKNOWN_VERSION
  */
 int
-read_wim_header(const tchar *filename, struct filedes *in_fd,
-               struct wim_header *hdr)
+read_wim_header(WIMStruct *wim, struct wim_header *hdr)
 {
        struct wim_header_disk disk_hdr _aligned_attribute(8);
+       struct filedes *in_fd = &wim->in_fd;
+       const tchar *filename = wim->filename;
        int ret;
        tchar *pipe_str;
 
@@ -113,14 +112,11 @@ read_wim_header(const tchar *filename, struct filedes *in_fd,
                return WIMLIB_ERR_INVALID_HEADER;
        }
 
-       if (le32_to_cpu(disk_hdr.wim_version) != WIM_VERSION) {
-               ERROR("\"%"TS"\": The WIM header says the WIM version is %u, "
-                     "but wimlib only knows about version %u",
-                     filename, le32_to_cpu(disk_hdr.wim_version), WIM_VERSION);
-               if (le32_to_cpu(disk_hdr.wim_flags) & WIM_HDR_FLAG_COMPRESS_LZMS) {
-                       ERROR("\"%"TS"\": This WIM uses LZMS compression, "
-                             "which is not supported by wimlib.", filename);
-               }
+       hdr->wim_version = le32_to_cpu(disk_hdr.wim_version);
+       if (hdr->wim_version != WIM_VERSION_DEFAULT &&
+           hdr->wim_version != WIM_VERSION_STREAM_CONCAT)
+       {
+               ERROR("\"%"TS"\": Unknown WIM version: %u", hdr->wim_version);
                return WIMLIB_ERR_UNKNOWN_VERSION;
        }
 
@@ -149,11 +145,11 @@ read_wim_header(const tchar *filename, struct filedes *in_fd,
                return WIMLIB_ERR_IMAGE_COUNT;
        }
 
-       get_resource_entry(&disk_hdr.lookup_table_res_entry, &hdr->lookup_table_res_entry);
-       get_resource_entry(&disk_hdr.xml_data_res_entry, &hdr->xml_res_entry);
-       get_resource_entry(&disk_hdr.boot_metadata_res_entry, &hdr->boot_metadata_res_entry);
+       get_wim_reshdr(&disk_hdr.lookup_table_reshdr, &hdr->lookup_table_reshdr);
+       get_wim_reshdr(&disk_hdr.xml_data_reshdr, &hdr->xml_data_reshdr);
+       get_wim_reshdr(&disk_hdr.boot_metadata_reshdr, &hdr->boot_metadata_reshdr);
        hdr->boot_idx = le32_to_cpu(disk_hdr.boot_idx);
-       get_resource_entry(&disk_hdr.integrity_table_res_entry, &hdr->integrity);
+       get_wim_reshdr(&disk_hdr.integrity_table_reshdr, &hdr->integrity_table_reshdr);
        return 0;
 
 read_error:
@@ -177,7 +173,7 @@ write_wim_header_at_offset(const struct wim_header *hdr, struct filedes *out_fd,
 
        disk_hdr.magic = hdr->magic;
        disk_hdr.hdr_size = cpu_to_le32(sizeof(struct wim_header_disk));
-       disk_hdr.wim_version = cpu_to_le32(WIM_VERSION);
+       disk_hdr.wim_version = cpu_to_le32(hdr->wim_version);
        disk_hdr.wim_flags = cpu_to_le32(hdr->flags);
        if (hdr->flags & WIM_HDR_FLAG_COMPRESSION)
                disk_hdr.chunk_size = cpu_to_le32(hdr->chunk_size);
@@ -188,11 +184,11 @@ write_wim_header_at_offset(const struct wim_header *hdr, struct filedes *out_fd,
        disk_hdr.part_number = cpu_to_le16(hdr->part_number);
        disk_hdr.total_parts = cpu_to_le16(hdr->total_parts);
        disk_hdr.image_count = cpu_to_le32(hdr->image_count);
-       put_resource_entry(&hdr->lookup_table_res_entry, &disk_hdr.lookup_table_res_entry);
-       put_resource_entry(&hdr->xml_res_entry, &disk_hdr.xml_data_res_entry);
-       put_resource_entry(&hdr->boot_metadata_res_entry, &disk_hdr.boot_metadata_res_entry);
+       put_wim_reshdr(&hdr->lookup_table_reshdr, &disk_hdr.lookup_table_reshdr);
+       put_wim_reshdr(&hdr->xml_data_reshdr, &disk_hdr.xml_data_reshdr);
+       put_wim_reshdr(&hdr->boot_metadata_reshdr, &disk_hdr.boot_metadata_reshdr);
        disk_hdr.boot_idx = cpu_to_le32(hdr->boot_idx);
-       put_resource_entry(&hdr->integrity, &disk_hdr.integrity_table_res_entry);
+       put_wim_reshdr(&hdr->integrity_table_reshdr, &disk_hdr.integrity_table_reshdr);
        memset(disk_hdr.unused, 0, sizeof(disk_hdr.unused));
 
        if (offset == out_fd->offset)
@@ -256,6 +252,7 @@ init_wim_header(struct wim_header *hdr, int ctype, u32 chunk_size)
 {
        memset(hdr, 0, sizeof(struct wim_header));
        hdr->magic = WIM_MAGIC;
+       hdr->wim_version = WIM_VERSION_DEFAULT;
        if (set_wim_hdr_cflags(ctype, hdr)) {
                ERROR("Invalid compression type specified (%d)", ctype);
                return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
@@ -293,51 +290,51 @@ wimlib_print_header(const WIMStruct *wim)
 
        tprintf(T("Magic Characters            = MSWIM\\000\\000\\000\n"));
        tprintf(T("Header Size                 = %u\n"), WIM_HEADER_DISK_SIZE);
-       tprintf(T("Version                     = 0x%x\n"), WIM_VERSION);
+       tprintf(T("Version                     = 0x%x\n"), hdr->wim_version);
 
        tprintf(T("Flags                       = 0x%x\n"), hdr->flags);
        for (size_t i = 0; i < ARRAY_LEN(hdr_flags); i++)
                if (hdr_flags[i].flag & hdr->flags)
                        tprintf(T("    WIM_HDR_FLAG_%s is set\n"), hdr_flags[i].name);
 
-       tprintf(T("Chunk Size                  = %u\n"), wim->hdr.chunk_size);
+       tprintf(T("Chunk Size                  = %u\n"), hdr->chunk_size);
        tfputs (T("GUID                        = "), stdout);
        print_byte_field(hdr->guid, WIM_GID_LEN, stdout);
        tputchar(T('\n'));
-       tprintf(T("Part Number                 = %hu\n"), wim->hdr.part_number);
-       tprintf(T("Total Parts                 = %hu\n"), wim->hdr.total_parts);
+       tprintf(T("Part Number                 = %hu\n"), hdr->part_number);
+       tprintf(T("Total Parts                 = %hu\n"), hdr->total_parts);
        tprintf(T("Image Count                 = %u\n"), hdr->image_count);
        tprintf(T("Lookup Table Size           = %"PRIu64"\n"),
-                               (u64)hdr->lookup_table_res_entry.size);
+                               (u64)hdr->lookup_table_reshdr.size_in_wim);
        tprintf(T("Lookup Table Flags          = 0x%hhx\n"),
-                               (u8)hdr->lookup_table_res_entry.flags);
+                               (u8)hdr->lookup_table_reshdr.flags);
        tprintf(T("Lookup Table Offset         = %"PRIu64"\n"),
-                               hdr->lookup_table_res_entry.offset);
+                               hdr->lookup_table_reshdr.offset_in_wim);
        tprintf(T("Lookup Table Original_size  = %"PRIu64"\n"),
-                               hdr->lookup_table_res_entry.original_size);
+                               hdr->lookup_table_reshdr.uncompressed_size);
        tprintf(T("XML Data Size               = %"PRIu64"\n"),
-                               (u64)hdr->xml_res_entry.size);
+                               (u64)hdr->xml_data_reshdr.size_in_wim);
        tprintf(T("XML Data Flags              = 0x%hhx\n"),
-                               (u8)hdr->xml_res_entry.flags);
+                               (u8)hdr->xml_data_reshdr.flags);
        tprintf(T("XML Data Offset             = %"PRIu64"\n"),
-                               hdr->xml_res_entry.offset);
+                               hdr->xml_data_reshdr.offset_in_wim);
        tprintf(T("XML Data Original Size      = %"PRIu64"\n"),
-                               hdr->xml_res_entry.original_size);
+                               hdr->xml_data_reshdr.uncompressed_size);
        tprintf(T("Boot Metadata Size          = %"PRIu64"\n"),
-                               (u64)hdr->boot_metadata_res_entry.size);
+                               (u64)hdr->boot_metadata_reshdr.size_in_wim);
        tprintf(T("Boot Metadata Flags         = 0x%hhx\n"),
-                               (u8)hdr->boot_metadata_res_entry.flags);
+                               (u8)hdr->boot_metadata_reshdr.flags);
        tprintf(T("Boot Metadata Offset        = %"PRIu64"\n"),
-                               hdr->boot_metadata_res_entry.offset);
+                               hdr->boot_metadata_reshdr.offset_in_wim);
        tprintf(T("Boot Metadata Original Size = %"PRIu64"\n"),
-                               hdr->boot_metadata_res_entry.original_size);
+                               hdr->boot_metadata_reshdr.uncompressed_size);
        tprintf(T("Boot Index                  = %u\n"), hdr->boot_idx);
        tprintf(T("Integrity Size              = %"PRIu64"\n"),
-                               (u64)hdr->integrity.size);
+                               (u64)hdr->integrity_table_reshdr.size_in_wim);
        tprintf(T("Integrity Flags             = 0x%hhx\n"),
-                               (u8)hdr->integrity.flags);
+                               (u8)hdr->integrity_table_reshdr.flags);
        tprintf(T("Integrity Offset            = %"PRIu64"\n"),
-                               hdr->integrity.offset);
+                               hdr->integrity_table_reshdr.offset_in_wim);
        tprintf(T("Integrity Original_size     = %"PRIu64"\n"),
-                               hdr->integrity.original_size);
+                               hdr->integrity_table_reshdr.uncompressed_size);
 }