Package EOorg.EOeolang.EOsys.Posix

Interface CStdLib

All Superinterfaces:

com.sun.jna.Library

public interface CStdLib
extends com.sun.jna.Library

C standard library with unix syscalls.

Since:

0.40

Nested Class Summary

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

com.sun.jna.Library.Handler

Field Summary

Fields

Modifier and Type	Field	Description
static int	AF_INET	TCP connection family.
static CStdLib	INSTANCE	C STDLIB instance.
static int	IPPROTO_TCP	Protocol for TCP connection.
static int	O_RDONLY	Open flag for reading only.
static int	O_RDWR	Open flag for reading and writing.
static int	SOCK_STREAM	The "Socket as stream" type.
static int	STDIN_FILENO	Standard input file descriptor.
static int	STDOUT_FILENO	Standard output file descriptor.

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_SYMBOL_PROVIDER, OPTION_TYPE_MAPPER

Method Summary

Modifier and Type	Method	Description
int	accept(int sockfd, SockaddrIn addr, com.sun.jna.ptr.IntByReference addrlen)	Accept connection on socket.
int	bind(int sockfd, SockaddrIn addr, int addrlen)	Assigns the address specified by addr to the socket referred to by the file descriptor sockfd.
int	close(int descriptor)	Close file descriptor.
int	connect(int sockfd, SockaddrIn addr, int addrlen)	Connects to the server at the specified IP address and port.
int	dup(int descriptor)	Duplicates file descriptor.
int	dup2(int descriptor, int other)	Duplicates a file descriptor to another.
String	getenv(String name)	Get environment variable.
int	getpid()	The "getpid" syscall.
int	gettimeofday(GettimeofdaySyscall.Timeval timeval, com.sun.jna.Pointer timezone)	Get current time.
int	inet_addr(String address)	Convert IP string to binary form.
int	listen(int sockfd, int backlog)	Listen for incoming connections on socket.
int	open(String path, int flags)	The "open" syscall.
int	read(int descriptor, byte[] buf, int size)	Read bytes from file descriptor.
int	recv(int sockfd, byte[] buf, int len, int flags)	Receive a message from a socket.
int	send(int sockfd, byte[] buf, int len, int flags)	Send a message to a socket.
int	socket(int domain, int type, int protocol)	Create an endpoint for communication.
String	strerror(int errno)	Converts errno to a human-readable string.
int	write(int descriptor, String buf, int size)	Writes given bytes buffer to file descriptor.

Field Detail

INSTANCE

static final CStdLib INSTANCE

C STDLIB instance.

STDIN_FILENO

static final int STDIN_FILENO

Standard input file descriptor.

See Also:

Constant Field Values

STDOUT_FILENO

static final int STDOUT_FILENO

Standard output file descriptor.

See Also:

Constant Field Values

O_RDONLY

static final int O_RDONLY

Open flag for reading only.

See Also:

Constant Field Values

O_RDWR

static final int O_RDWR

Open flag for reading and writing.

See Also:

Constant Field Values

AF_INET

static final int AF_INET

TCP connection family.

See Also:

Constant Field Values

SOCK_STREAM

static final int SOCK_STREAM

The "Socket as stream" type.

See Also:

Constant Field Values

IPPROTO_TCP

static final int IPPROTO_TCP

Protocol for TCP connection.

See Also:

Constant Field Values

Method Detail

dup

int dup(int descriptor)

Duplicates file descriptor.

Parameters:

descriptor - Old file descriptor

Returns:

New file descriptor

dup2

int dup2(int descriptor,
         int other)

Duplicates a file descriptor to another.

Parameters:

descriptor - Old file descriptor

other - New file descriptor

Returns:

Duplicated file descriptor

getpid

int getpid()

The "getpid" syscall.

Returns:

Process ID.

open

int open(String path,
         int flags)

The "open" syscall.

Parameters:

path - Path to file to open

flags - Open flags

Returns:

File descriptor

close

int close(int descriptor)

Close file descriptor.

Parameters:

descriptor - File descriptor

Returns:

Zero on success, -1 on error

write

int write(int descriptor,
          String buf,
          int size)

Writes given bytes buffer to file descriptor.

Parameters:

descriptor - File descriptor.

buf - Buffer.

size - Number of bytes to be written.

Returns:

Number of bytes was written.

read

int read(int descriptor,
         byte[] buf,
         int size)

Read bytes from file descriptor.

Parameters:

descriptor - File descriptor.

buf - Buffer.

size - Number of bytes to be read.

Returns:

Number of bytes was read.

getenv

String getenv(String name)

Get environment variable.

Parameters:

name - Name of the variable

Returns:

Name of the environment variable

gettimeofday

int gettimeofday(GettimeofdaySyscall.Timeval timeval,
                 com.sun.jna.Pointer timezone)

Get current time.

Parameters:

timeval - Timevalue

timezone - Timezone

Returns:

Zero on success, -1 on error

socket

int socket(int domain,
           int type,
           int protocol)

Create an endpoint for communication.

Parameters:

domain - Socket domain

type - Socket type

protocol - Socket protocol

Returns:

New socket descriptor on success, -1 on error

connect

int connect(int sockfd,
            SockaddrIn addr,
            int addrlen)

Connects to the server at the specified IP address and port.

Parameters:

sockfd - Socket descriptor

addr - Address structure

addrlen - The size of the address structure

Returns:

Zero on success, -1 on error

bind

int bind(int sockfd,
         SockaddrIn addr,
         int addrlen)

Assigns the address specified by addr to the socket referred to by the file descriptor sockfd.

Parameters:

sockfd - Socket descriptor

addr - Address structure

addrlen - The size of the address structure

Returns:

Zero on success, -1 on error

listen

int listen(int sockfd,
           int backlog)

Listen for incoming connections on socket.

Parameters:

sockfd - Socket descriptor

backlog - Specifies the queue length for completely established sockets waiting to be accepted

Returns:

Zero on success, -1 on error

accept

int accept(int sockfd,
           SockaddrIn addr,
           com.sun.jna.ptr.IntByReference addrlen)

Accept connection on socket.

Parameters:

sockfd - Socket descriptor

addr - Address structure

addrlen - The size of the address structure

Returns:

On success, file descriptor for the accepted socket (a nonnegative integer) is returned. On error, -1 is returned.

recv

int recv(int sockfd,
         byte[] buf,
         int len,
         int flags)

Receive a message from a socket.

Parameters:

sockfd - Socket descriptor

buf - Byte buffer to store received bytes

len - Size of received data

flags - Flags

Returns:

The number of received bytes on success, -1 on error

send

int send(int sockfd,
         byte[] buf,
         int len,
         int flags)

Send a message to a socket.

Parameters:

sockfd - Socket descriptor

buf - Byte buffer to store sent bytes

len - Size of sent data

flags - Flags

Returns:

The number of sent bytes on success, -1 on error

inet_addr

int inet_addr(String address)

Convert IP string to binary form.

Parameters:

address - IP address

Returns:

IP address in binary form

strerror

String strerror(int errno)

Converts errno to a human-readable string.

Parameters:

errno - The error number

Returns:

Error as string