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/* Copyright (c) 2010 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.
*
* Utility for ChromeOS-specific GPT partitions, Please see corresponding .c
* files for more details.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <uuid/uuid.h>
#include "cgpt.h"
#include "vboot_host.h"
const char* progname;
const char* command;
void (*uuid_generator)(uint8_t* buffer);
struct {
const char *name;
int (*fp)(int argc, char *argv[]);
const char *comment;
} cmds[] = {
{"create", cmd_create, "Create or reset GPT headers and tables"},
{"add", cmd_add, "Add, edit or remove a partition entry"},
{"show", cmd_show, "Show partition table and entries"},
{"repair", cmd_repair, "Repair damaged GPT headers and tables"},
{"boot", cmd_boot, "Edit the PMBR sector for legacy BIOSes"},
{"find", cmd_find, "Locate a partition by its GUID"},
{"prioritize", cmd_prioritize,
"Reorder the priority of all kernel partitions"},
{"legacy", cmd_legacy, "Switch between GPT and Legacy GPT"},
};
void Usage(void) {
int i;
printf("\nUsage: %s COMMAND [OPTIONS] DRIVE\n\n"
"Supported COMMANDs:\n\n",
progname);
for (i = 0; i < sizeof(cmds)/sizeof(cmds[0]); ++i) {
printf(" %-15s %s\n", cmds[i].name, cmds[i].comment);
}
printf("\nFor more detailed usage, use %s COMMAND -h\n\n", progname);
}
static int is_pow2(size_t v) {
return v && (v & (v - 1)) == 0;
}
static int parse_nand_option(const char *arg) {
int bytes_per_page, pages_per_block, fts_block_offset, fts_block_size;
if ('=' != arg[0])
return -1;
arg++;
bytes_per_page = atoi(arg);
arg = strchr(arg, ',');
if (!arg)
return -1;
arg++;
pages_per_block = atoi(arg);
arg = strchr(arg, ',');
if (!arg)
return -1;
arg++;
fts_block_offset = atoi(arg);
arg = strchr(arg, ',');
if (!arg)
return -1;
arg++;
fts_block_size = atoi(arg);
if (fts_block_size == 0 || !is_pow2(pages_per_block) ||
!is_pow2(bytes_per_page) || bytes_per_page < 512) {
return -1;
}
EnableNandImage(bytes_per_page, pages_per_block, fts_block_offset,
fts_block_size);
return 0;
}
int main(int argc, char *argv[]) {
int i;
int match_count = 0;
int match_index = 0;
uuid_generator = uuid_generate;
progname = strrchr(argv[0], '/');
if (progname)
progname++;
else
progname = argv[0];
for (i = 1; i < argc; ++i) {
if (0 == strncmp(argv[i], "-N", 2)) {
if (!parse_nand_option(argv[i] + 2)) {
int j;
// Remove it form the list.
for (j = i; j < argc - 1; j++)
argv[j] = argv[j + 1];
argc--;
break;
}
// Bad nand config.
printf("Nand option must fit: -N=<bytes_per_page>,<pages_per_block>,"
"<block_offset_of_partition>,<block_size_of_partition>\n");
return CGPT_FAILED;
}
}
if (argc < 2) {
Usage();
return CGPT_FAILED;
}
// increment optind now, so that getopt skips argv[0] in command function
command = argv[optind++];
// Find the command to invoke.
for (i = 0; command && i < sizeof(cmds)/sizeof(cmds[0]); ++i) {
// exact match?
if (0 == strcmp(cmds[i].name, command)) {
match_index = i;
match_count = 1;
break;
}
// unique match?
else if (0 == strncmp(cmds[i].name, command, strlen(command))) {
match_index = i;
match_count++;
}
}
if (match_count == 1)
return cmds[match_index].fp(argc, argv);
// Couldn't find a single matching command.
Usage();
return CGPT_FAILED;
}
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