1GETSOCKNAME(3P)            POSIX Programmer's Manual           GETSOCKNAME(3P)
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PROLOG

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

13       getsockname — get the socket name
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SYNOPSIS

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

22       The getsockname() function shall retrieve the locally-bound name of the
23       specified  socket, store this address in the sockaddr structure pointed
24       to by the address argument, and store the length of this address in the
25       object pointed to by the address_len argument.
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27       The  address_len  argument  points to a socklen_t object which on input
28       specifies the length of the supplied sockaddr structure, and on  output
29       specifies  the  length  of the stored address.  If the actual length of
30       the address is greater than the length of the supplied sockaddr  struc‐
31       ture, the stored address shall be truncated.
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33       If  the  socket has not been bound to a local name, the value stored in
34       the object pointed to by address is unspecified.
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RETURN VALUE

37       Upon successful completion, 0 shall be returned, the  address  argument
38       shall  point to the address of the socket, and the address_len argument
39       shall point to the length  of  the  address.  Otherwise,  −1  shall  be
40       returned and errno set to indicate the error.
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ERRORS

43       The getsockname() function shall fail if:
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45       EBADF  The socket argument is not a valid file descriptor.
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47       ENOTSOCK
48              The socket argument does not refer to a socket.
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50       EOPNOTSUPP
51              The operation is not supported for this socket's protocol.
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53       The getsockname() function may fail if:
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55       EINVAL The socket has been shut down.
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57       ENOBUFS
58              Insufficient  resources were available in the system to complete
59              the function.
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61       The following sections are informative.
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EXAMPLES

64       None.
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APPLICATION USAGE

67       None.
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RATIONALE

70       None.
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FUTURE DIRECTIONS

73       None.
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SEE ALSO

76       accept(), bind(), getpeername(), socket()
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78       The Base Definitions volume of POSIX.1‐2008, <sys_socket.h>
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81       Portions of this text are reprinted and reproduced in  electronic  form
82       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
83       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
84       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
85       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
86       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
87       event of any discrepancy between this version and the original IEEE and
88       The  Open Group Standard, the original IEEE and The Open Group Standard
89       is the referee document. The original Standard can be  obtained  online
90       at http://www.unix.org/online.html .
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92       Any  typographical  or  formatting  errors that appear in this page are
93       most likely to have been introduced during the conversion of the source
94       files  to  man page format. To report such errors, see https://www.ker‐
95       nel.org/doc/man-pages/reporting_bugs.html .
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99IEEE/The Open Group                  2013                      GETSOCKNAME(3P)
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