| /* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Exports the kernel commandline from a given partition/image. |
| */ |
| |
| |
| #include <getopt.h> |
| #include <stdio.h> |
| #include <sys/mman.h> |
| #include <unistd.h> |
| |
| #include "vboot_host.h" |
| |
| enum { |
| OPT_KLOADADDR = 1000, |
| }; |
| |
| static struct option long_opts[] = { |
| { "kloadaddr", 1, NULL, OPT_KLOADADDR }, |
| { NULL, 0, NULL, 0 } |
| }; |
| |
| /* Print help and return error */ |
| static int PrintHelp(void) { |
| puts("dump_kernel_config - Prints the kernel command line\n" |
| "\n" |
| "Usage: dump_kernel_config [--kloadaddr <ADDRESS>] " |
| "<image/blockdevice>\n" |
| "\n" |
| ""); |
| return 1; |
| } |
| |
| int main(int argc, char* argv[]) { |
| char *infile = NULL; |
| char *config = NULL; |
| uint64_t kernel_body_load_address = USE_PREAMBLE_LOAD_ADDR; |
| int parse_error = 0; |
| char *e; |
| int i; |
| |
| while (((i = getopt_long(argc, argv, ":", long_opts, NULL)) != -1) && |
| !parse_error) { |
| switch (i) { |
| default: |
| case '?': |
| /* Unhandled option */ |
| parse_error = 1; |
| break; |
| |
| case 0: |
| /* silently handled option */ |
| break; |
| |
| case OPT_KLOADADDR: |
| kernel_body_load_address = strtoul(optarg, &e, 0); |
| if (!*optarg || (e && *e)) { |
| fprintf(stderr, "Invalid --kloadaddr\n"); |
| parse_error = 1; |
| } |
| break; |
| } |
| } |
| |
| if (optind >= argc) { |
| fprintf(stderr, "Expected argument after options\n"); |
| parse_error = 1; |
| } else |
| infile = argv[optind]; |
| |
| if (parse_error) |
| return PrintHelp(); |
| |
| if (!infile || !*infile) { |
| fprintf(stderr, "Must specify filename\n"); |
| return 1; |
| } |
| |
| config = FindKernelConfig(infile, kernel_body_load_address); |
| if (!config) |
| return 1; |
| |
| printf("%s", config); |
| |
| free(config); |
| return 0; |
| } |