GETSOCKNAME(2) manual page
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getsockname - get socket name
#include <sys/socket.h>
int getsockname(int sockfd, struct sockaddr *addrsocklen_t *" 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 appropriately.
- EBADF
- The argument sockfd is not a
valid 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 argument sockfd is a file, not a socket.
SVr4, 4.4BSD (the getsockname() function call appeared in 4.2BSD), POSIX.1-2001.
The third argument of getsockname() is in reality an int * (and this
is what 4.x BSD and libc4 and libc5 have). Some POSIX confusion resulted
in the present socklen_t, also used by glibc. See also accept(2)
.
bind(2)
,
socket(2)
, getifaddrs(3)
, ip(7)
, socket(7)
, unix(7)
This page is
part of release 3.78 of the Linux man-pages project. A description of the
project, information about reporting bugs, and the latest version of this
page, can be found at http://www.kernel.org/doc/man-pages/.
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