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