bindresvport()

Bind a socket to a privileged IP port

Synopsis:

#include <sys/types.h>
#include <netinet/in.h>

int bindresvport( int sd,
                  struct sockaddr_in * sin );

Library:

libsocket

Description:

The bindresvport() function binds a socket descriptor to a privileged IP port (i.e. a port number in the range 0-1023).

Only root can bind to a privileged port; this call fails for any other user.

Returns:

0

Success.

-1

An error occurred (errno is set).

Errors:

EACCES

You must be root to call bindresvport().

EADDRINUSE

The specified address is already in use.

EADDRNOTAVAIL

The specified address isn't available from the local machine.

EBADF

Invalid descriptor sd.

EFAULT

The sin parameter isn't a valid pointer to a sockaddr_in structure.

EINVAL

The socket is already bound to a port.

EPFNOSUPPORT

The protocol family isn't supported.

Classification:

Unix

See also:

connect(), getsockname(), listen(), socket()