C Interface |
 |
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
getsockname(s, addr, addrlen)
int s;
struct sockaddr_in *addr;
int *addrlen;
|
Description |
|
The
argument s is a socket descriptor. The getsockname
system call returns the address of the socket indicated by s. The
addr parameter points to a socket address structure in which
this address is returned. The addrlen parameter points to an
int parameter that should be initialized to indicate the size
of the address structure. On return, the addrlen parameter
contains the actual size of the address returned (in bytes). If addr
does not point to enough space to contain the whole address of the
socket, only the first addrlen bytes of the address are returned.
This call is supported for AF_INET only.
Return Value |
|
If the call is successful, a 0 is returned. If the call fails, a -1 is returned, and the error code is stored in errno.
Errors |
|
The following errors are returned by getsockname:
- [EBADF]
The argument s is not a valid descriptor.
- [ENOTSOCK]
The argument s is a file, not a socket.
- [ENOBUFS]
Insufficient resources were available in the system to
perform the operation.
- [EFAULT]
The addr or addrlen parameters are not
valid pointers.
- [EINVAL]
The socket has been shut down.
- [EOPNOTSUPP]
The operation is not supported for AF_UNIX
sockets.
Author |
|
UCB (University of California at Berkeley)
See Also |
|
bind, socket, getpeername
