/*
* header.c
*
- * Read, write, or create a WIM header.
+ * Read, write, or print a WIM header.
*/
/*
- * Copyright (C) 2012, 2013 Eric Biggers
+ * Copyright (C) 2012, 2013, 2015 Eric Biggers
*
- * This file is part of wimlib, a library for working with WIM files.
+ * This file 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 3 of the License, or (at your option) any
+ * later version.
*
- * wimlib is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 3 of the License, or (at your option)
- * any later version.
- *
- * 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 General Public License for more
+ * This file 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 General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
#include "wimlib.h"
+#include "wimlib/alloca.h"
#include "wimlib/assert.h"
#include "wimlib/endianness.h"
#include "wimlib/error.h"
#include "wimlib/util.h"
#include "wimlib/wim.h"
-#include <limits.h>
-#include <string.h>
-#include <unistd.h>
-#ifdef HAVE_ALLOCA_H
-# include <alloca.h>
-#else
-# include <stdlib.h>
-#endif
-
/*
* 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
+ * beginning of the file.
+ *
* @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;
BUILD_BUG_ON(sizeof(struct wim_header_disk) != WIM_HEADER_DISK_SIZE);
- DEBUG("Reading WIM header from \"%"TS"\"", filename);
-
ret = full_read(in_fd, &disk_hdr, sizeof(disk_hdr));
if (ret)
goto read_error;
- if (disk_hdr.magic != WIM_MAGIC) {
- if (disk_hdr.magic == PWM_MAGIC) {
+ hdr->magic = le64_to_cpu(disk_hdr.magic);
+
+ if (hdr->magic != WIM_MAGIC) {
+ if (hdr->magic == PWM_MAGIC) {
/* Pipable WIM: Use header at end instead, unless
* actually reading from a pipe. */
if (!in_fd->is_pipe) {
- lseek(in_fd->fd, -WIM_HEADER_DISK_SIZE, SEEK_END);
+ ret = WIMLIB_ERR_READ;
+ if (-1 == lseek(in_fd->fd, -WIM_HEADER_DISK_SIZE, SEEK_END))
+ goto read_error;
ret = full_read(in_fd, &disk_hdr, sizeof(disk_hdr));
if (ret)
goto read_error;
return WIMLIB_ERR_NOT_A_WIM_FILE;
}
}
- hdr->magic = disk_hdr.magic;
if (le32_to_cpu(disk_hdr.hdr_size) != sizeof(struct wim_header_disk)) {
ERROR("\"%"TS"\": Header size is invalid (%u bytes)",
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_SOLID)
+ {
+ ERROR("\"%"TS"\": Unknown WIM version: %u",
+ filename, hdr->wim_version);
return WIMLIB_ERR_UNKNOWN_VERSION;
}
hdr->flags = le32_to_cpu(disk_hdr.wim_flags);
hdr->chunk_size = le32_to_cpu(disk_hdr.chunk_size);
- memcpy(hdr->guid, disk_hdr.guid, WIM_GID_LEN);
+ copy_guid(hdr->guid, disk_hdr.guid);
hdr->part_number = le16_to_cpu(disk_hdr.part_number);
hdr->total_parts = le16_to_cpu(disk_hdr.total_parts);
hdr->image_count = le32_to_cpu(disk_hdr.image_count);
- DEBUG("part_number = %u, total_parts = %u, image_count = %u",
- hdr->part_number, hdr->total_parts, hdr->image_count);
-
- if (hdr->image_count >= INT_MAX) {
+ if (unlikely(hdr->image_count > MAX_IMAGES)) {
ERROR("\"%"TS"\": Invalid image count (%u)",
filename, hdr->image_count);
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.blob_table_reshdr, &hdr->blob_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:
* specified is the current one, the position is advanced by the size of the
* header. */
int
-write_wim_header_at_offset(const struct wim_header *hdr, struct filedes *out_fd,
- off_t offset)
+write_wim_header(const struct wim_header *hdr, struct filedes *out_fd,
+ off_t offset)
{
struct wim_header_disk disk_hdr _aligned_attribute(8);
int ret;
- DEBUG("Writing %sWIM header at offset %"PRIu64,
- ((hdr->magic == PWM_MAGIC) ? "pipable " : ""),
- offset);
-
- disk_hdr.magic = hdr->magic;
+ disk_hdr.magic = cpu_to_le64(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);
- else
- disk_hdr.chunk_size = 0;
- memcpy(disk_hdr.guid, hdr->guid, WIM_GID_LEN);
-
+ disk_hdr.chunk_size = cpu_to_le32(hdr->chunk_size);
+ copy_guid(disk_hdr.guid, hdr->guid);
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->blob_table_reshdr, &disk_hdr.blob_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)
return ret;
}
-/* Writes the header for a WIM file at the output file descriptor's current
- * offset. */
-int
-write_wim_header(const struct wim_header *hdr, struct filedes *out_fd)
-{
- return write_wim_header_at_offset(hdr, out_fd, out_fd->offset);
-}
-
/* Update just the wim_flags field. */
int
write_wim_header_flags(u32 hdr_flags, struct filedes *out_fd)
offsetof(struct wim_header_disk, wim_flags));
}
-int
-set_wim_hdr_cflags(int ctype, struct wim_header *hdr)
-{
- hdr->flags &= ~(WIM_HDR_FLAG_COMPRESSION |
- WIM_HDR_FLAG_COMPRESS_LZX |
- WIM_HDR_FLAG_COMPRESS_RESERVED |
- WIM_HDR_FLAG_COMPRESS_XPRESS |
- WIM_HDR_FLAG_COMPRESS_LZMS);
- switch (ctype) {
-
- case WIMLIB_COMPRESSION_TYPE_NONE:
- return 0;
-
- case WIMLIB_COMPRESSION_TYPE_LZX:
- hdr->flags |= WIM_HDR_FLAG_COMPRESSION | WIM_HDR_FLAG_COMPRESS_LZX;
- return 0;
-
- case WIMLIB_COMPRESSION_TYPE_XPRESS:
- hdr->flags |= WIM_HDR_FLAG_COMPRESSION | WIM_HDR_FLAG_COMPRESS_XPRESS;
- return 0;
-
- default:
- return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
- }
-}
-
-/*
- * Initializes the header for a WIM file.
- */
-int
-init_wim_header(struct wim_header *hdr, int ctype, u32 chunk_size)
-{
- memset(hdr, 0, sizeof(struct wim_header));
- hdr->magic = WIM_MAGIC;
- if (set_wim_hdr_cflags(ctype, hdr)) {
- ERROR("Invalid compression type specified (%d)", ctype);
- return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
- }
- hdr->chunk_size = chunk_size;
- hdr->total_parts = 1;
- hdr->part_number = 1;
- randomize_byte_array(hdr->guid, sizeof(hdr->guid));
- return 0;
-}
-
-struct hdr_flag {
+static const struct {
u32 flag;
const char *name;
-};
-struct hdr_flag hdr_flags[] = {
- {WIM_HDR_FLAG_RESERVED, "RESERVED"},
+} hdr_flags[] = {
+ {WIM_HDR_FLAG_RESERVED, "RESERVED"},
{WIM_HDR_FLAG_COMPRESSION, "COMPRESSION"},
{WIM_HDR_FLAG_READONLY, "READONLY"},
{WIM_HDR_FLAG_SPANNED, "SPANNED"},
{WIM_HDR_FLAG_COMPRESS_RESERVED,"COMPRESS_RESERVED"},
{WIM_HDR_FLAG_COMPRESS_LZX, "COMPRESS_LZX"},
{WIM_HDR_FLAG_COMPRESS_XPRESS, "COMPRESS_XPRESS"},
+ {WIM_HDR_FLAG_COMPRESS_LZMS, "COMPRESS_LZMS"},
+ {WIM_HDR_FLAG_COMPRESS_XPRESS_2,"COMPRESS_XPRESS_2"},
};
/* API function documented in wimlib.h */
{
const struct wim_header *hdr = &wim->hdr;
- tprintf(T("Magic Characters = MSWIM\\000\\000\\000\n"));
+ tprintf(T("Magic Characters = "));
+ for (int i = 0; i < sizeof(hdr->magic); i++) {
+ tchar c = (u8)(hdr->magic >> ((8 * i)));
+ if (istalpha(c))
+ tputchar(c);
+ else
+ tprintf(T("\\%o"), c);
+ }
+ tputchar(T('\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);
+ print_byte_field(hdr->guid, GUID_SIZE, 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);
- tprintf(T("Lookup Table Flags = 0x%hhx\n"),
- (u8)hdr->lookup_table_res_entry.flags);
- tprintf(T("Lookup Table Offset = %"PRIu64"\n"),
- hdr->lookup_table_res_entry.offset);
- tprintf(T("Lookup Table Original_size = %"PRIu64"\n"),
- hdr->lookup_table_res_entry.original_size);
+ tprintf(T("Blob Table Size = %"PRIu64"\n"),
+ (u64)hdr->blob_table_reshdr.size_in_wim);
+ tprintf(T("Blob Table Flags = 0x%hhx\n"),
+ (u8)hdr->blob_table_reshdr.flags);
+ tprintf(T("Blob Table Offset = %"PRIu64"\n"),
+ hdr->blob_table_reshdr.offset_in_wim);
+ tprintf(T("Blob Table Original_size = %"PRIu64"\n"),
+ hdr->blob_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);
}
git://wimlib.net / wimlib / blobdiff