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1eae873b61
The host-side futility tool will need to support all extant vboot
implementations. Some legacy futility commands only support the
original vb1 format, but others ("show" or "sign", for example)
may need to be instructed which formats to expect or emit.
This change adds some global args to specify the preferred
formats. It also cleans up a few [unused AFAICT] one-letter args
to avoid conflicts.
BUG=chromium:231574
BRANCH=none
TEST=make runtests
Nothing makes use of this yet, except the "help" command.
Change-Id: Ib79fa12af72b8860b9494e5d9e90b9572c006107
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/246765
Reviewed-by: Randall Spangler <rspangler@chromium.org>
94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
/* 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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