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// sgdisk.cc
// Command-line-based version of gdisk. This program is named after sfdisk,
// and it can serve a similar role (easily scripted, etc.), but it's used
// strictly via command-line arguments, and it doesn't bear much resemblance
// to sfdisk in actual use.
//
// by Rod Smith, project began February 2009; sgdisk begun January 2010.
/* This program is copyright (c) 2009-2011 by Roderick W. Smith. It is distributed
under the terms of the GNU GPL version 2, as detailed in the COPYING file. */
#include <iostream>
#include <fstream>
#include <string.h>
#include <string>
#include <iostream>
#include <sstream>
#include <errno.h>
#include "gptcl.h"
#include <fcntl.h>
#include <unistd.h>
using namespace std;
#define MAX_OPTIONS 50
/*
* Dump partition details in a machine readable format:
*
* DISK [mbr|gpt] [guid]
* PART [n] [type] [guid]
*/
static int android_dump(char* device) {
BasicMBRData mbrData;
GPTData gptData;
GPTPart partData;
int numParts = 0;
stringstream res;
/* Silence noisy underlying library */
int stdout = dup(STDOUT_FILENO);
int silence = open("/dev/null", 0);
dup2(silence, STDOUT_FILENO);
dup2(silence, STDERR_FILENO);
if (!mbrData.ReadMBRData((string) device)) {
cerr << "Failed to read MBR" << endl;
return 8;
}
switch (mbrData.GetValidity()) {
case mbr:
res << "DISK mbr" << endl;
for (int i = 0; i < MAX_MBR_PARTS; i++) {
if (mbrData.GetLength(i) > 0) {
res << "PART " << (i + 1) << " " << hex
<< (int) mbrData.GetType(i) << dec << endl;
}
}
break;
case hybrid:
case gpt:
gptData.JustLooking();
if (!gptData.LoadPartitions((string) device)) {
cerr << "Failed to read GPT" << endl;
return 9;
}
res << "DISK gpt " << gptData.GetDiskGUID() << endl;
numParts = gptData.GetNumParts();
for (int i = 0; i < numParts; i++) {
partData = gptData[i];
if (partData.GetFirstLBA() > 0) {
res << "PART " << (i + 1) << " " << partData.GetType() << " "
<< partData.GetUniqueGUID() << " "
<< partData.GetDescription() << endl;
}
}
break;
default:
cerr << "Unknown partition table" << endl;
return 10;
}
/* Write our actual output */
string resString = res.str();
write(stdout, resString.c_str(), resString.length());
return 0;
}
int main(int argc, char *argv[]) {
for (int i = 0; i < argc; i++) {
if (!strcmp("--android-dump", argv[i])) {
return android_dump(argv[i + 1]);
}
}
GPTDataCL theGPT;
return theGPT.DoOptions(argc, argv);
}
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