190 lines
4.5 KiB
C
190 lines
4.5 KiB
C
/*
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* common utility functions for cbfstool
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*
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* Copyright (C) 2009 coresystems GmbH
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* written by Patrick Georgi <patrick.georgi@coresystems.de>
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* Copyright (C) 2012 Google, Inc.
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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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <libgen.h>
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#include "common.h"
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#include "cbfs.h"
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/* Utilities */
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int verbose = 0;
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/* Small, OS/libc independent runtime check for endianess */
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int is_big_endian(void)
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{
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static const uint32_t inttest = 0x12345678;
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uint8_t inttest_lsb = *(uint8_t *)&inttest;
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if (inttest_lsb == 0x12) {
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return 1;
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}
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return 0;
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}
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static off_t get_file_size(FILE *f)
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{
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struct stat s;
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int fd = fileno(f);
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if (fd == -1) return -1;
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if (fstat(fd, &s) == -1) return -1;
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return s.st_size;
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}
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/* Buffer and file I/O */
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int buffer_create(struct buffer *buffer, size_t size, const char *name) {
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buffer->name = strdup(name);
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buffer->size = size;
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buffer->data = (char *)malloc(buffer->size);
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if (!buffer->data) {
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fprintf(stderr, "buffer_create: Insufficient memory (0x%zx).\n",
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size);
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}
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return (buffer->data == NULL);
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}
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int buffer_from_file(struct buffer *buffer, const char *filename) {
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FILE *fp = fopen(filename, "rb");
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if (!fp) {
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perror(filename);
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return -1;
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}
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buffer->size = get_file_size(fp);
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if (buffer->size == -1) {
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fprintf(stderr, "could not determine size of %s\n", filename);
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fclose(fp);
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return -1;
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}
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buffer->name = strdup(filename);
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buffer->data = (char *)malloc(buffer->size);
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assert(buffer->data);
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if (fread(buffer->data, 1, buffer->size, fp) != buffer->size) {
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fprintf(stderr, "incomplete read: %s\n", filename);
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fclose(fp);
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return -1;
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}
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fclose(fp);
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return 0;
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}
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int buffer_write_file(struct buffer *buffer, const char *filename) {
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FILE *fp = fopen(filename, "wb");
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if (!fp) {
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perror(filename);
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return -1;
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}
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assert(buffer && buffer->data);
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if (fwrite(buffer->data, 1, buffer->size, fp) != buffer->size) {
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fprintf(stderr, "incomplete write: %s\n", filename);
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fclose(fp);
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return -1;
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}
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fclose(fp);
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return 0;
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}
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void buffer_delete(struct buffer *buffer) {
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assert(buffer);
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if (buffer->name) {
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free(buffer->name);
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buffer->name = NULL;
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}
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if (buffer->data) {
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free(buffer->data);
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buffer->data = NULL;
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}
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buffer->size = 0;
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}
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void cbfs_file_get_header(struct buffer *buf, struct cbfs_file *file)
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{
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bgets(buf, &file->magic, sizeof(file->magic));
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file->len = xdr_be.get32(buf);
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file->type = xdr_be.get32(buf);
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file->checksum = xdr_be.get32(buf);
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file->offset = xdr_be.get32(buf);
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}
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static struct {
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uint32_t arch;
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const char *name;
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} arch_names[] = {
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{ CBFS_ARCHITECTURE_ARM, "arm" },
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{ CBFS_ARCHITECTURE_X86, "x86" },
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{ CBFS_ARCHITECTURE_UNKNOWN, "unknown" }
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};
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uint32_t string_to_arch(const char *arch_string)
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{
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int i;
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uint32_t ret = CBFS_ARCHITECTURE_UNKNOWN;
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for (i = 0; i < ARRAY_SIZE(arch_names); i++) {
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if (!strcasecmp(arch_string, arch_names[i].name)) {
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ret = arch_names[i].arch;
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break;
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}
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}
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return ret;
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}
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static struct filetypes_t {
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uint32_t type;
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const char *name;
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} filetypes[] = {
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{CBFS_COMPONENT_STAGE, "stage"},
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{CBFS_COMPONENT_PAYLOAD, "payload"},
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{CBFS_COMPONENT_OPTIONROM, "optionrom"},
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{CBFS_COMPONENT_BOOTSPLASH, "bootsplash"},
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{CBFS_COMPONENT_RAW, "raw"},
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{CBFS_COMPONENT_VSA, "vsa"},
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{CBFS_COMPONENT_MBI, "mbi"},
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{CBFS_COMPONENT_MICROCODE, "microcode"},
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{CBFS_COMPONENT_CMOS_DEFAULT, "cmos default"},
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{CBFS_COMPONENT_CMOS_LAYOUT, "cmos layout"},
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{CBFS_COMPONENT_DELETED, "deleted"},
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{CBFS_COMPONENT_NULL, "null"}
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};
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void print_supported_filetypes(void)
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{
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int i, number = ARRAY_SIZE(filetypes);
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for (i=0; i<number; i++) {
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LOG(" %s%c", filetypes[i].name, (i==(number-1))?'\n':',');
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if ((i%8) == 7)
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LOG("\n");
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}
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}
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uint64_t intfiletype(const char *name)
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{
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size_t i;
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for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++)
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if (strcmp(filetypes[i].name, name) == 0)
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return filetypes[i].type;
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return -1;
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}
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