SGI_BINDRPCPORT(3R)SGI_BINDRPCPORT(3R)NAMEsgi_bindrpcport - bind a name allowed for an RPC program to a socket
SYNOPSIS
#include <netdb.h>
int sgi_bindrpcport(int s, int prog, int proto, struct sockaddr *sa);
DESCRIPTION
Sgi_bindrpcport binds a socket address which is allowed for the RPC
program number prog and transport protocol proto to the socket s.
If the sa argument is NULL or points to a socket address whose sa_family
field is the constant AF_UNSPEC, the name bound is the wildcard IP
address INADDR_ANY with a port allowed for the program number and
transport protocol, as controlled by the /etc/rpcports file (see
rpcports(4)). Otherwise, the name bound is the IP address specified in
*sa with an allowed port. If the sa argument is not NULL, it is filled
in with the actual name bound on a successful return.
The proto argument must be either IPPROTO_UDP or IPPROTO_TCP.
Starting from 6.5.29, sgi_bindrpcport can distinguish between IPv4 and
IPv6 addresses using transport field in /etc/rpcports. If sa argument is
not a NULL pointer and sa_family is either AF_INET or AF_INET6 then the
port will be chosen based on the address family specified by sa_family
field otherwise the socket's address family is used to decide which
transport protocol to choose.
If the range of ports allowed by the /etc/rpcports file contains both
reserved and non-reserved ports, all the reserved ports are tried before
any non-reserved ports are tried. For reserved ports, sgi_bindrpcport
will attempt to add the CAP_PRIV_PORT capability to the effective
capability set before binding and will restore the original effective
capability set on return (see capabilities(4)).
RETURN VALUE
If an address was successfully bound to the socket, 0 is returned and the
address bound is written to *sa (if sa is not NULL). If no address could
be bound, -1 is returned and errno further specifies the error.
ERRORS
[EBADF] S is not a valid descriptor.
[ENOTSOCK] S is not a socket.
[EADDRNOTAVAIL] The specified address is not available from the local
machine.
[ENOENT] The /etc/rpcports file was missing, or the file
contained no rules, or there was a syntax error in the
file, or no rules matched the program and transport, or
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SGI_BINDRPCPORT(3R)SGI_BINDRPCPORT(3R)
the matching rules resulted in an empty port range.
[EADDRINUSE] A non-empty range of ports was specified in the
/etc/rpcports file and all ports in the range are
already in use.
[EINVAL] The socket is already bound to an address.
[EFAULT] The sa parameter is not NULL and is not in a valid part
of the user address space.
[EAFNOSUPPORT] The sa parameter points to a socket address of an
unsupported family, or sa was NULL and the socket's
address family was not supported.
FILES
/etc/rpcports
SEE ALSObind(2), rpcports(4), capabilities(4).
ORIGIN
Sgi_bindrpcport is specific to IRIX and first appeared in IRIX 6.5.20.
An application wishing to use this function and to be capable of running
on releases of IRIX prior to 6.5.20 should use the _MIPS_SYMBOL_PRESENT
macro to test for the presence of the functions.
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