| // 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.h" |
| #include "vboot_host.h" |
| |
| extern const char* progname; |
| |
| 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" |
| " -D NUM Size (in bytes) of the disk where partitions reside\n" |
| " default 0, meaning partitions and GPT structs are\n" |
| " both on DRIVE\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[]) { |
| 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:D:")) != -1) |
| { |
| switch (c) |
| { |
| case 'D': |
| params.drive_size = strtoull(optarg, &e, 0); |
| errorcnt += check_int_parse(c, e); |
| break; |
| case 'i': |
| params.set_partition = (uint32_t)strtoul(optarg, &e, 0); |
| errorcnt += check_int_parse(c, e); |
| break; |
| case 'f': |
| params.set_friends = 1; |
| break; |
| case 'P': |
| params.max_priority = (int)strtol(optarg, &e, 0); |
| errorcnt += check_int_parse(c, e); |
| errorcnt += check_int_limit(c, params.max_priority, 1, 15); |
| 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.drive_name = argv[optind]; |
| |
| return CgptPrioritize(¶ms); |
| } |