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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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GETSOCKNAME(3P) POSIX Programmer's Manual GETSOCKNAME(3P)
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.
getsockname — get the socket name
#include <sys/socket.h>
int getsockname(int socket, struct sockaddr *restrict address,
socklen_t *restrict address_len);
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.
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.
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.
None.
None.
None.
None.
accept(3p), bind(3p), getpeername(3p), socket(3p)
The Base Definitions volume of POSIX.1‐2017, sys_socket.h(0p)
Portions of this text are reprinted and reproduced in electronic
form from IEEE Std 1003.1-2017, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The
Open Group Base Specifications Issue 7, 2018 Edition, Copyright
(C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. 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.opengroup.org/unix/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 .
IEEE/The Open Group 2017 GETSOCKNAME(3P)
Pages that refer to this page: sys_socket.h(0p), bind(3p), connect(3p), getpeername(3p), socket(3p)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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