oshi.jna.platform.linux.LinuxLibc 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.jna.platform.linux;
import com.sun.jna.Native; // NOSONAR squid:s1191
import com.sun.jna.Structure;
import com.sun.jna.Structure.FieldOrder;
import com.sun.jna.platform.linux.LibC;
import oshi.jna.platform.unix.CLibrary;
/**
* Linux C Library. This class should be considered non-API as it may be removed
* if/when its code is incorporated into the JNA project.
*/
public interface LinuxLibc extends LibC, CLibrary {
LinuxLibc INSTANCE = Native.load("c", LinuxLibc.class);
/**
* Return type for getutxent()
*/
@FieldOrder({ "ut_type", "ut_pid", "ut_line", "ut_id", "ut_user", "ut_host", "ut_exit", "ut_session", "ut_tv",
"ut_addr_v6", "reserved" })
class LinuxUtmpx extends Structure {
public short ut_type; // Type of login.
public int ut_pid; // Process ID of login process.
public byte[] ut_line = new byte[UT_LINESIZE]; // Devicename.
public byte[] ut_id = new byte[4]; // Inittab ID.
public byte[] ut_user = new byte[UT_NAMESIZE]; // Username.
public byte[] ut_host = new byte[UT_HOSTSIZE]; // Hostname for remote login.
public Exit_status ut_exit; // Exit status of a process marked as DEAD_PROCESS.
public int ut_session; // Session ID, used for windowing.
public Ut_Tv ut_tv; // Time entry was made.
public int[] ut_addr_v6 = new int[4]; // Internet address of remote host; IPv4 address uses just ut_addr_v6[0]
public byte[] reserved = new byte[20]; // Reserved for future use.
}
/**
* Part of utmpx structure
*/
@FieldOrder({ "e_termination", "e_exit" })
class Exit_status extends Structure {
public short e_termination; // Process termination status
public short e_exit; // Process exit status
}
/**
* 32-bit timeval required for utmpx structure
*/
@FieldOrder({ "tv_sec", "tv_usec" })
class Ut_Tv extends Structure {
public int tv_sec; // seconds
public int tv_usec; // microseconds
}
/**
* Reads a line from the current file position in the utmp file. It returns a
* pointer to a structure containing the fields of the line.
*
* Not thread safe
*
* @return a {@link LinuxUtmpx} on success, and NULL on failure (which includes
* the "record not found" case)
*/
LinuxUtmpx getutxent();
}