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GETSOCKNAME

Section: POSIX Programmer's Manual (3P)
Updated: 2013
Index Return to Main Contents
 

PROLOG

This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

 

NAME

getsockname --- get the socket name  

SYNOPSIS

#include <sys/socket.h>
int getsockname(int socket, struct sockaddr *restrict address,
    socklen_t *restrict address_len);
 

DESCRIPTION

The getsockname() function shall retrieve the locally-bound name of the specified socket, store this address in the sockaddr structure pointed to by the address argument, and store the length of this address in the object pointed to by the address_len argument. The address_len argument points to a socklen_t object which on input specifies the length of the supplied sockaddr structure, and on output specifies the length of the stored address. If the actual length of the address is greater than the length of the supplied sockaddr structure, the stored address shall be truncated. If the socket has not been bound to a local name, the value stored in the object pointed to by address is unspecified.  

RETURN VALUE

Upon successful completion, 0 shall be returned, the address argument shall point to the address of the socket, and the address_len argument shall point to the length of the address. Otherwise, -1 shall be returned and errno set to indicate the error.  

ERRORS

The getsockname() function shall fail if:
EBADF
The socket argument is not a valid file descriptor.
ENOTSOCK
The socket argument does not refer to a socket.
EOPNOTSUPP
The operation is not supported for this socket's protocol. The getsockname() function may fail if:
EINVAL
The socket has been shut down.
ENOBUFS
Insufficient resources were available in the system to complete the function.

The following sections are informative.  

EXAMPLES

None.  

APPLICATION USAGE

None.  

RATIONALE

None.  

FUTURE DIRECTIONS

None.  

SEE ALSO

accept(), bind(), getpeername(), socket() The Base Definitions volume of POSIX.1-2008, <sys_socket.h>
 

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .


 

Index

PROLOG
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
EXAMPLES
APPLICATION USAGE
RATIONALE
FUTURE DIRECTIONS
SEE ALSO
COPYRIGHT


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