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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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getsockname(2) System Calls Manual getsockname(2)
getsockname - get socket name
Standard C library (libc, -lc)
#include <sys/socket.h>
int getsockname(int sockfd, struct sockaddr *restrict addr,
socklen_t *restrict addrlen);
getsockname() returns the current address to which the socket
sockfd is bound, in the buffer pointed to by addr. The addrlen
argument should be initialized to indicate the amount of space
(in bytes) pointed to by addr. On return it contains the actual
size of the socket address.
The returned address is truncated if the buffer provided is too
small; in this case, addrlen will return a value greater than was
supplied to the call.
On success, zero is returned. On error, -1 is returned, and
errno is set to indicate the error.
EBADF The argument sockfd is not a valid file descriptor.
EFAULT The addr argument points to memory not in a valid part of
the process address space.
EINVAL addrlen is invalid (e.g., is negative).
ENOBUFS
Insufficient resources were available in the system to
perform the operation.
ENOTSOCK
The file descriptor sockfd does not refer to a socket.
POSIX.1-2008.
POSIX.1-2001, SVr4, 4.4BSD (first appeared in 4.2BSD).
bind(2), socket(2), getifaddrs(3), ip(7), socket(7), unix(7)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
man-pages@man7.org
Linux man-pages 6.9.1 2024-05-02 getsockname(2)
Pages that refer to this page: bind(2), connect(2), getpeername(2), socket(2), socketcall(2), syscalls(2), bindresvport(3), getifaddrs(3), getnameinfo(3), if_nameindex(3), sd_is_fifo(3), sockaddr(3type), signal-safety(7), socket(7), unix(7)
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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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