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getsockname(3p) — Linux manual page

GETSOCKNAME(3P)         POSIX Programmer's ManualGETSOCKNAME(3P)

PROLOG        top

       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        top

       getsockname — get the socket name

SYNOPSIS        top

       #include <sys/socket.h>       int getsockname(intsocket, struct sockaddr *restrictaddress,           socklen_t *restrictaddress_len);

DESCRIPTION        top

       Thegetsockname() function shall retrieve the locally-bound name       of the specified socket, store this address in thesockaddr       structure pointed to by theaddress argument, and store the length       of this address in the object pointed to by theaddress_len       argument.       Theaddress_len argument points to asocklen_tobject which on       input specifies the length of the suppliedsockaddrstructure, and       on output specifies the length of the stored address.  If the       actual length of the address is greater than the length of the       suppliedsockaddrstructure, 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 byaddress is unspecified.

RETURN VALUE        top

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

ERRORS        top

       Thegetsockname() function shall fail if:EBADFThesocket argument is not a valid file descriptor.ENOTSOCK              Thesocket argument does not refer to a socket.EOPNOTSUPP              The operation is not supported for this socket's protocol.       Thegetsockname() function may fail if:EINVALThe socket has been shut down.ENOBUFS              Insufficient resources were available in the system to              complete the function.The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       None.

RATIONALE        top

       None.

FUTURE DIRECTIONS        top

       None.

SEE ALSO        top

accept(3p),bind(3p),getpeername(3p),socket(3p)       The Base Definitions volume of POSIX.1‐2017,sys_socket.h(0p)

COPYRIGHT        top

       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 athttp://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, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017GETSOCKNAME(3P)

Pages that refer to this page:sys_socket.h(0p), bind(3p), connect(3p), getpeername(3p), socket(3p)

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