bindresvport(3) -- Linux man page
NAME
bindresvport - bind a socket to a privileged IP port
SYNOPSIS
#include <sys/types.h>
#include <netinet/in.h>
int bindresvport(sd, sin)
int sd;
struct sockaddr_in *sin;
DESCRIPTION
bindresvport()
is used to bind a socket descriptor to a privileged
IP
port, that is, a
port number in the range 0-1023.
The routine returns 0 if it is successful,
otherwise -1 is returned and
errno
set to reflect the cause of the error.
Only root can bind to a privileged port; this call will fail for any
other users.
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