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// 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.
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <uuid/uuid.h>
#include "cgpt_params.h"
static void Usage(void)
{
printf("\nUsage: %s prioritize [OPTIONS] DRIVE\n\n"
"Reorder the priority of all active ChromeOS Kernel partitions.\n\n"
"Options:\n"
" -P NUM Highest priority to use in the new ordering. The\n"
" other partitions will be ranked in decreasing\n"
" priority while preserving their original order.\n"
" If necessary the lowest ranks will be coalesced.\n"
" No active kernels will be lowered to priority 0.\n"
" -i NUM Specify the partition to make the highest in the new\n"
" order.\n"
" -f Friends of the given partition (those with the same\n"
" starting priority) are also updated to the new\n"
" highest priority.\n"
"\n"
"With no options this will set the lowest active kernel to\n"
"priority 1 while maintaining the original order.\n"
"\n", progname);
}
int cmd_prioritize(int argc, char *argv[]) {
struct drive drive;
CgptPrioritizeParams params;
memset(¶ms, 0, sizeof(params));
int c;
int errorcnt = 0;
char *e = 0;
opterr = 0; // quiet, you
while ((c=getopt(argc, argv, ":hi:fP:")) != -1)
{
switch (c)
{
case 'i':
params.set_partition = (uint32_t)strtoul(optarg, &e, 0);
if (!*optarg || (e && *e))
{
Error("invalid argument to -%c: \"%s\"\n", c, optarg);
errorcnt++;
}
break;
case 'f':
params.set_friends = 1;
break;
case 'P':
params.max_priority = (int)strtol(optarg, &e, 0);
if (!*optarg || (e && *e))
{
Error("invalid argument to -%c: \"%s\"\n", c, optarg);
errorcnt++;
}
if (params.max_priority < 1 || params.max_priority > 15) {
Error("value for -%c must be between 1 and 15\n", c);
errorcnt++;
}
break;
case 'h':
Usage();
return CGPT_OK;
case '?':
Error("unrecognized option: -%c\n", optopt);
errorcnt++;
break;
case ':':
Error("missing argument to -%c\n", optopt);
errorcnt++;
break;
default:
errorcnt++;
break;
}
}
if (errorcnt)
{
Usage();
return CGPT_FAILED;
}
if (params.set_friends && !params.set_partition) {
Error("the -f option is only useful with the -i option\n");
Usage();
return CGPT_FAILED;
}
if (optind >= argc) {
Error("missing drive argument\n");
return CGPT_FAILED;
}
params.driveName = argv[optind];
return cgpt_prioritize(¶ms);
}
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