bindresvport.c File Reference

#include <wintirpc.h>
#include <sys/types.h>
#include <errno.h>
#include <string.h>
#include <rpc/rpc.h>

Include dependency graph for bindresvport.c:

Go to the source code of this file.

Macros
#define	IP_PORTRANGE   19
#define	IP_PORTRANGE_LOW   2

Functions
int	bindresvport (SOCKET sd, struct sockaddr_in *sin)
int	bindresvport_sa (SOCKET sd, struct sockaddr *sa)

Macro Definition Documentation

IP_PORTRANGE

#define IP_PORTRANGE   19

Definition at line 154 of file bindresvport.c.

IP_PORTRANGE_LOW

#define IP_PORTRANGE_LOW   2

Definition at line 155 of file bindresvport.c.

Function Documentation

bindresvport()

int bindresvport	(	SOCKET	sd,
		struct sockaddr_in *	sin
	)

Definition at line 53 of file bindresvport.c.

{
        return bindresvport_sa(sd, (struct sockaddr *)sin);
}

Referenced by clnt_tli_create(), and svc_tli_create().

bindresvport_sa()

int bindresvport_sa	(	SOCKET	sd,
		struct sockaddr *	sa
	)

Definition at line 161 of file bindresvport.c.

{
#ifdef IPV6_PORTRANGE
    int old;
#endif
    int error, af;
    struct sockaddr_storage myaddr;
    struct sockaddr_in *sin;
#ifdef INET6
    struct sockaddr_in6 *sin6;
#endif
    int proto, portrange, portlow;
    u_int16_t *portp;
    socklen_t salen;
#ifdef _WIN32
        WSAPROTOCOL_INFO proto_info;
        int proto_info_size = sizeof(proto_info);
#endif
 
    if (sa == NULL) {
        salen = sizeof(myaddr);
        sa = (struct sockaddr *)&myaddr;
 
#ifdef _WIN32
        memset(sa, 0, salen);
        if (error = getsockopt(sd, SOL_SOCKET, SO_PROTOCOL_INFO, (char *)&proto_info, &proto_info_size) == SOCKET_ERROR) {
#ifndef __REACTOS__
            int sockerr = WSAGetLastError();
#endif
            return -1;
        }
        af = proto_info.iAddressFamily;
#else
        if (getsockname(sd, sa, &salen) == -1)
            return -1;  /* errno is correctly set */
 
        af = sa->sa_family;
        memset(sa, 0, salen);
#endif
    } else
        af = sa->sa_family;
 
    switch (af) {
    case AF_INET:
        proto = IPPROTO_IP;
        portrange = IP_PORTRANGE;
        portlow = IP_PORTRANGE_LOW;
        sin = (struct sockaddr_in *)sa;
        salen = sizeof(struct sockaddr_in);
        portp = &sin->sin_port;
        break;
#ifdef INET6
    case AF_INET6:
        proto = IPPROTO_IPV6;
#ifdef IPV6_PORTRANGE
        portrange = IPV6_PORTRANGE;
        portlow = IPV6_PORTRANGE_LOW;
#endif
        sin6 = (struct sockaddr_in6 *)sa;
        salen = sizeof(struct sockaddr_in6);
        portp = &sin6->sin6_port;
        break;
#endif /* INET6 */
    default:
        errno = WSAEPFNOSUPPORT;
        return (-1);
    }
    sa->sa_family = (ADDRESS_FAMILY) af;
 
#ifdef IPV6_PORTRANGE
    if (*portp == 0) {
        socklen_t oldlen = sizeof(old);
 
        error = getsockopt(sd, proto, portrange, &old, &oldlen);
        if (error < 0)
            return (error);
 
        error = setsockopt(sd, proto, portrange, &portlow,
            sizeof(portlow));
        if (error < 0)
            return (error);
    }
#endif
 
    error = bind(sd, sa, salen);
    if (error) {
#ifndef __REACTOS__
        int err = WSAGetLastError();
#endif
    }
 
#ifdef IPV6_PORTRANGE
    if (*portp == 0) {
        int saved_errno = errno;
 
        if (error < 0) {
            if (setsockopt(sd, proto, portrange, &old,
                sizeof(old)) < 0)
                errno = saved_errno;
            return (error);
        }
 
        if (sa != (struct sockaddr *)&myaddr) {
            /* Hmm, what did the kernel assign? */
            if (getsockname(sd, sa, &salen) < 0)
                errno = saved_errno;
            return (error);
        }
    }
#endif
    return (error);
}

Referenced by bindresvport(), and clnt_dg_create().