oshi.util.platform.linux.ProcPath Maven / Gradle / Ivy
/*
* Copyright 2020-2023 The OSHI Project Contributors
* SPDX-License-Identifier: MIT
*/
package oshi.util.platform.linux;
import java.io.File;
import oshi.annotation.concurrent.ThreadSafe;
import oshi.util.GlobalConfig;
/**
* Provides constants for paths in the {@code /proc} filesystem on Linux.
*
* If the user desires to configure a custom {@code /proc} path, it must be declared in the OSHI configuration file or
* updated in the {@link GlobalConfig} class prior to initializing this class.
*/
@ThreadSafe
public final class ProcPath {
/**
* The /proc filesystem location.
*/
public static final String PROC = queryProcConfig();
public static final String ASOUND = PROC + "/asound/";
public static final String AUXV = PROC + "/self/auxv";
public static final String CPUINFO = PROC + "/cpuinfo";
public static final String DISKSTATS = PROC + "/diskstats";
public static final String MEMINFO = PROC + "/meminfo";
public static final String MODEL = PROC + "/device-tree/model";
public static final String MOUNTS = PROC + "/mounts";
public static final String NET = PROC + "/net";
public static final String PID_CMDLINE = PROC + "/%d/cmdline";
public static final String PID_CWD = PROC + "/%d/cwd";
public static final String PID_EXE = PROC + "/%d/exe";
public static final String PID_ENVIRON = PROC + "/%d/environ";
public static final String PID_FD = PROC + "/%d/fd";
public static final String PID_IO = PROC + "/%d/io";
public static final String PID_STAT = PROC + "/%d/stat";
public static final String PID_STATM = PROC + "/%d/statm";
public static final String PID_STATUS = PROC + "/%d/status";
public static final String SELF_STAT = PROC + "/self/stat";
public static final String STAT = PROC + "/stat";
public static final String SYS_FS_FILE_NR = PROC + "/sys/fs/file-nr";
public static final String SYS_FS_FILE_MAX = PROC + "/sys/fs/file-max";
public static final String TASK_PATH = PROC + "/%d/task";
public static final String TASK_COMM = TASK_PATH + "/%d/comm";
public static final String TASK_STATUS = TASK_PATH + "/%d/status";
public static final String TASK_STAT = TASK_PATH + "/%d/stat";
public static final String THREAD_SELF = PROC + "/thread-self";
public static final String UPTIME = PROC + "/uptime";
public static final String VERSION = PROC + "/version";
public static final String VMSTAT = PROC + "/vmstat";
private ProcPath() {
}
private static String queryProcConfig() {
String procPath = GlobalConfig.get(GlobalConfig.OSHI_UTIL_PROC_PATH, "/proc");
// Ensure prefix begins with path separator, but doesn't end with one
procPath = '/' + procPath.replaceAll("/$|^/", "");
if (!new File(procPath).exists()) {
throw new GlobalConfig.PropertyException(GlobalConfig.OSHI_UTIL_PROC_PATH, "The path does not exist");
}
return procPath;
}
}