108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/* Copyright (c) 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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#include <getopt.h>
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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 <uuid/uuid.h>
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#include "cgpt.h"
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#include "vboot_host.h"
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extern const char* progname;
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static void Usage(void)
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{
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printf("\nUsage: %s prioritize [OPTIONS] DRIVE\n\n"
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"Reorder the priority of all active ChromeOS Kernel partitions.\n\n"
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"Options:\n"
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" -D NUM Size (in bytes) of the disk where partitions reside;\n"
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" default 0, meaning partitions and GPT structs are\n"
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" both on DRIVE\n"
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" -P NUM Highest priority to use in the new ordering. The\n"
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" other partitions will be ranked in decreasing\n"
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" priority while preserving their original order.\n"
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" If necessary the lowest ranks will be coalesced.\n"
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" No active kernels will be lowered to priority 0.\n"
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" -i NUM Specify the partition to make the highest in the new\n"
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" order.\n"
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" -f Friends of the given partition (those with the same\n"
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" starting priority) are also updated to the new\n"
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" highest priority.\n"
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"\n"
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"With no options this will set the lowest active kernel to\n"
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"priority 1 while maintaining the original order.\n"
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"\n", progname);
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}
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int cmd_prioritize(int argc, char *argv[]) {
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CgptPrioritizeParams params;
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memset(¶ms, 0, sizeof(params));
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int c;
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int errorcnt = 0;
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char *e = 0;
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opterr = 0; // quiet, you
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while ((c=getopt(argc, argv, ":hi:fP:D:")) != -1)
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{
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switch (c)
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{
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case 'D':
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params.drive_size = strtoull(optarg, &e, 0);
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errorcnt += check_int_parse(c, e);
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break;
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case 'i':
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params.set_partition = (uint32_t)strtoul(optarg, &e, 0);
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errorcnt += check_int_parse(c, e);
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break;
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case 'f':
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params.set_friends = 1;
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break;
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case 'P':
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params.max_priority = (int)strtol(optarg, &e, 0);
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errorcnt += check_int_parse(c, e);
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errorcnt += check_int_limit(c, params.max_priority, 1, 15);
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break;
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case 'h':
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Usage();
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return CGPT_OK;
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case '?':
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Error("unrecognized option: -%c\n", optopt);
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errorcnt++;
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break;
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case ':':
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Error("missing argument to -%c\n", optopt);
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errorcnt++;
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break;
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default:
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errorcnt++;
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break;
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}
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}
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if (errorcnt)
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{
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Usage();
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return CGPT_FAILED;
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}
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if (params.set_friends && !params.set_partition) {
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Error("the -f option is only useful with the -i option\n");
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Usage();
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return CGPT_FAILED;
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}
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if (optind >= argc) {
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Error("missing drive argument\n");
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return CGPT_FAILED;
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}
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params.drive_name = argv[optind];
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return CgptPrioritize(¶ms);
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}
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