oshi.driver.unix.solaris.disk.Prtvtoc Maven / Gradle / Ivy
/*
* Copyright 2020-2022 The OSHI Project Contributors
* SPDX-License-Identifier: MIT
*/
package oshi.driver.unix.solaris.disk;
import java.util.ArrayList;
import java.util.List;
import oshi.annotation.concurrent.ThreadSafe;
import oshi.hardware.HWPartition;
import oshi.util.Constants;
import oshi.util.ExecutingCommand;
import oshi.util.ParseUtil;
/**
* Utility to query iostat
*/
@ThreadSafe
public final class Prtvtoc {
private static final String PRTVTOC_DEV_DSK = "prtvtoc /dev/dsk/";
private Prtvtoc() {
}
public static List queryPartitions(String mount, int major) {
List partList = new ArrayList<>();
// This requires sudo permissions; will result in "permission denied"
// otherwise in which case we return empty partition list
List prtvotc = ExecutingCommand.runNative(PRTVTOC_DEV_DSK + mount);
// Sample output - see man prtvtoc
if (prtvotc.size() > 1) {
int bytesPerSector = 0;
String[] split;
// We have a result, parse partition table
for (String line : prtvotc) {
// If line starts with asterisk we ignore except for the one
// specifying bytes per sector
if (line.startsWith("*")) {
if (line.endsWith("bytes/sector")) {
split = ParseUtil.whitespaces.split(line);
if (split.length > 0) {
bytesPerSector = ParseUtil.parseIntOrDefault(split[1], 0);
}
}
} else if (bytesPerSector > 0) {
// If bytes/sector is still 0, these are not real partitions so
// ignore.
// Lines without asterisk have 6 or 7 whitespaces-split values
// representing (last field optional):
// Partition Tag Flags Sector Count Sector Mount
split = ParseUtil.whitespaces.split(line.trim());
// Partition 2 is always the whole disk so we ignore it
if (split.length >= 6 && !"2".equals(split[0])) {
// First field is partition number
String identification = mount + "s" + split[0];
// major already defined as method param
int minor = ParseUtil.parseIntOrDefault(split[0], 0);
// Second field is tag. Parse:
String name;
switch (ParseUtil.parseIntOrDefault(split[1], 0)) {
case 0x01:
case 0x18:
name = "boot";
break;
case 0x02:
name = "root";
break;
case 0x03:
name = "swap";
break;
case 0x04:
name = "usr";
break;
case 0x05:
name = "backup";
break;
case 0x06:
name = "stand";
break;
case 0x07:
name = "var";
break;
case 0x08:
name = "home";
break;
case 0x09:
name = "altsctr";
break;
case 0x0a:
name = "cache";
break;
case 0x0b:
name = "reserved";
break;
case 0x0c:
name = "system";
break;
case 0x0e:
name = "public region";
break;
case 0x0f:
name = "private region";
break;
default:
name = Constants.UNKNOWN;
break;
}
// Third field is flags.
String type;
// First character writable, second is mountable
switch (split[2]) {
case "00":
type = "wm";
break;
case "10":
type = "rm";
break;
case "01":
type = "wu";
break;
default:
type = "ru";
break;
}
// Fifth field is sector count
long partSize = bytesPerSector * ParseUtil.parseLongOrDefault(split[4], 0L);
// Seventh field (if present) is mount point
String mountPoint = "";
if (split.length > 6) {
mountPoint = split[6];
}
partList.add(
new HWPartition(identification, name, type, "", partSize, major, minor, mountPoint));
}
}
}
}
return partList;
}
}