org.spf4j.unix

Interface CLibrary

All Superinterfaces:

com.sun.jna.platform.unix.LibCAPI, com.sun.jna.Library, com.sun.jna.platform.unix.Reboot, com.sun.jna.platform.unix.Resource

public interface CLibrary
extends com.sun.jna.platform.unix.LibCAPI, com.sun.jna.Library

GNU C library.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	CLibrary.FILE

Nested classes/interfaces inherited from interface com.sun.jna.platform.unix.Resource

com.sun.jna.platform.unix.Resource.Rlimit

Nested classes/interfaces inherited from interface com.sun.jna.Library

com.sun.jna.Library.Handler

Field Summary

Fields

Modifier and Type	Field and Description
static int	F_GETFD
static int	F_SETFD
static int	FD_CLOEXEC
static CLibrary	INSTANCE

Fields inherited from interface com.sun.jna.platform.unix.LibCAPI

HOST_NAME_MAX

Fields inherited from interface com.sun.jna.platform.unix.Reboot

RB_AUTOBOOT, RB_DISABLE_CAD, RB_ENABLE_CAD, RB_HALT_SYSTEM, RB_KEXEC, RB_POWER_OFF, RB_SW_SUSPEND

Fields inherited from interface com.sun.jna.platform.unix.Resource

RLIMIT_AS, RLIMIT_CORE, RLIMIT_CPU, RLIMIT_DATA, RLIMIT_FSIZE, RLIMIT_LOCKS, RLIMIT_MEMLOCK, RLIMIT_MSGQUEUE, RLIMIT_NICE, RLIMIT_NLIMITS, RLIMIT_NOFILE, RLIMIT_NPROC, RLIMIT_RSS, RLIMIT_RTPRIO, RLIMIT_RTTIME, RLIMIT_SIGPENDING, RLIMIT_STACK

Fields inherited from interface com.sun.jna.Library

OPTION_ALLOW_OBJECTS, OPTION_CALLING_CONVENTION, OPTION_CLASSLOADER, OPTION_FUNCTION_MAPPER, OPTION_INVOCATION_MAPPER, OPTION_OPEN_FLAGS, OPTION_STRING_ENCODING, OPTION_STRUCTURE_ALIGNMENT, OPTION_TYPE_MAPPER

Method Summary

Modifier and Type	Method and Description
int	chdir(String dir)
int	execv(String file, com.sun.jna.StringArray args)
int	execvp(String file, com.sun.jna.StringArray args)
int	fclose(CLibrary.FILE file)
int	fcntl(int fd, int command)
int	fcntl(int fd, int command, int flags)
CLibrary.FILE	fopen(String fileName, String mode)
int	fork()
int	fread(com.sun.jna.Pointer buf, int size, int count, CLibrary.FILE file)
CLibrary.FILE	freopen(String fileName, String mode, CLibrary.FILE stream)
int	fseek(CLibrary.FILE file, long offset, int whence)
long	ftell(CLibrary.FILE file)
int	getdtablesize()
int	getpid() Get current process id.
int	getppid() get parent process id.
int	kill(int pid, int signum)
void	perror(String msg)
int	readlink(String filename, com.sun.jna.Memory buffer, com.sun.jna.NativeLong size) Read a symlink.
int	setenv(String name, String value)
int	setgid(short newgid)
int	setsid()
int	setuid(short newuid)
String	strerror(int errno)
String	strsignal(int sigNumber) returns signal name from a signal number.
int	sysctl(int[] mib, int nameLen, com.sun.jna.Pointer oldp, com.sun.jna.ptr.IntByReference oldlenp, com.sun.jna.Pointer newp, com.sun.jna.ptr.IntByReference newlen)
int	sysctlbyname(String name, com.sun.jna.Pointer oldp, com.sun.jna.ptr.IntByReference oldlenp, com.sun.jna.Pointer newp, com.sun.jna.ptr.IntByReference newlen)
int	sysctlnametomib(String name, com.sun.jna.Pointer mibp, com.sun.jna.ptr.IntByReference size)
int	umask(int mask)

Methods inherited from interface com.sun.jna.platform.unix.LibCAPI

getdomainname, getegid, getenv, geteuid, getgid, gethostname, getloadavg, getuid, setdomainname, setegid, setenv, seteuid, setgid, sethostname, setuid, unsetenv

Methods inherited from interface com.sun.jna.platform.unix.Reboot

reboot

Methods inherited from interface com.sun.jna.platform.unix.Resource

getrlimit, setrlimit

Field Detail

INSTANCE

static final CLibrary INSTANCE

F_GETFD

static final int F_GETFD

See Also:

Constant Field Values

F_SETFD

static final int F_SETFD

See Also:

Constant Field Values

FD_CLOEXEC

static final int FD_CLOEXEC

See Also:

Constant Field Values

Method Detail

fork

int fork()

strsignal

String strsignal(int sigNumber)

returns signal name from a signal number.

Parameters:

sigNumber - the signal number.

Returns:

the signal name.

kill

int kill(int pid,
         int signum)

setsid

int setsid()

setuid

int setuid(short newuid)

setgid

int setgid(short newgid)

umask

int umask(int mask)

getpid

int getpid()

Get current process id. https://www.systutorials.com/docs/linux/man/2-getppid/

Returns:

current process id.

getppid

int getppid()

get parent process id. https://www.systutorials.com/docs/linux/man/2-getppid/

Returns:

parent process id.

chdir

int chdir(String dir)

execv

int execv(String file,
          com.sun.jna.StringArray args)

execvp

int execvp(String file,
           com.sun.jna.StringArray args)

setenv

int setenv(String name,
           String value)

perror

void perror(String msg)

strerror

String strerror(int errno)

sysctlbyname

int sysctlbyname(String name,
                 com.sun.jna.Pointer oldp,
                 com.sun.jna.ptr.IntByReference oldlenp,
                 com.sun.jna.Pointer newp,
                 com.sun.jna.ptr.IntByReference newlen)

sysctl

int sysctl(int[] mib,
           int nameLen,
           com.sun.jna.Pointer oldp,
           com.sun.jna.ptr.IntByReference oldlenp,
           com.sun.jna.Pointer newp,
           com.sun.jna.ptr.IntByReference newlen)

sysctlnametomib

int sysctlnametomib(String name,
                    com.sun.jna.Pointer mibp,
                    com.sun.jna.ptr.IntByReference size)

fopen

CLibrary.FILE fopen(String fileName,
                    String mode)

freopen

CLibrary.FILE freopen(String fileName,
                      String mode,
                      CLibrary.FILE stream)

fseek

int fseek(CLibrary.FILE file,
          long offset,
          int whence)

ftell

long ftell(CLibrary.FILE file)

fread

int fread(com.sun.jna.Pointer buf,
          int size,
          int count,
          CLibrary.FILE file)

fclose

int fclose(CLibrary.FILE file)

getdtablesize

int getdtablesize()

fcntl

int fcntl(int fd,
          int command)

fcntl

int fcntl(int fd,
          int command,
          int flags)

readlink

int readlink(String filename,
             com.sun.jna.Memory buffer,
             com.sun.jna.NativeLong size)

Read a symlink. The name will be copied into the specified memory, and returns the number of bytes copied. The string is not null-terminated.

Returns:

if the return value equals size, the caller needs to retry with a bigger buffer. If -1, error.