66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
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/*
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* CBFS Image Manipulation
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*
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* Copyright (C) 2013 The Chromium OS Authors. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#ifndef __CBFS_IMAGE_H
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#define __CBFS_IMAGE_H
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#include "common.h"
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#include "cbfs.h"
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/* CBFS image processing */
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struct cbfs_image {
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struct buffer buffer;
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struct cbfs_header *header;
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};
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/* Loads a CBFS image from file. Returns 0 on success, otherwise non-zero. */
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int cbfs_image_from_file(struct cbfs_image *image, const char *filename);
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/* Writes a CBFS image into file. Returns 0 on success, otherwise non-zero. */
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int cbfs_image_write_file(struct cbfs_image *image, const char *filename);
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/* Releases the CBFS image. Returns 0 on success, otherwise non-zero. */
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int cbfs_image_delete(struct cbfs_image *image);
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/* Primitive CBFS utilities */
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/* Returns a pointer to the only valid CBFS header in give buffer, otherwise
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* NULL (including when multiple headers were found). If there is a X86 ROM
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* style signature (pointer at 0xfffffffc) found in ROM, it will be selected as
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* the only header.*/
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struct cbfs_header *cbfs_find_header(char *data, size_t size);
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/* Returns the first cbfs_file entry in CBFS image by CBFS header (no matter if
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* the entry has valid content or not), otherwise NULL. */
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struct cbfs_file *cbfs_find_first_entry(struct cbfs_image *image);
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/* Returns next cbfs_file entry (no matter if its content is valid or not), or
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* NULL on failure. */
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struct cbfs_file *cbfs_find_next_entry(struct cbfs_image *image,
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struct cbfs_file *entry);
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/* Returns ROM address (offset) of entry.
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* This is different from entry->offset (pointer to content). */
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uint32_t cbfs_get_entry_addr(struct cbfs_image *image, struct cbfs_file *entry);
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/* Returns 1 if entry has valid data (by checking magic number), otherwise 0. */
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int cbfs_is_valid_entry(struct cbfs_file *entry);
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#endif
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