oshi.util.platform.linux.ProcPath Maven / Gradle / Ivy
/**
* MIT License
*
* Copyright (c) 2010 - 2020 The OSHI Project Contributors: https://github.com/oshi/oshi/graphs/contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
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 CPUINFO = PROC + "/cpuinfo";
public static final String DISKSTATS = PROC + "/diskstats";
public static final String MEMINFO = PROC + "/meminfo";
public static final String MOUNTS = PROC + "/mounts";
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_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 TASK_PATH = PROC + "/%d/task";
public static final String TASK_STATUS = TASK_PATH + "/%d/status";
public static final String TASK_STAT = TASK_PATH + "/%d/stat";
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("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("oshi.util.proc.path", "The path does not exist");
}
return procPath;
}
}