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nfs_connect(): if NFSMNT_RESVPORT is set, set IP_PORTRANGE_LOW on the socket

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rather than using home-grown code to find a free reserved socket.
this also results in nfs pcb's having the INP_ANONPORT and INP_LOWPORT flags
set, which is useful for netstat(1) to know.
This commit is contained in:
lukem 2002-02-27 03:46:36 +00:00
parent 178af24f65
commit 1119bfe6ea
1 changed files with 16 additions and 13 deletions
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29
sys/nfs/nfs_socket.c
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@ -1,4 +1,4 @@
/* $NetBSD: nfs_socket.c,v 1.71 2002/01/22 09:37:59 minoura Exp $ */
/* $NetBSD: nfs_socket.c,v 1.72 2002/02/27 03:46:36 lukem Exp $ */
/*
* Copyright (c) 1989, 1991, 1993, 1995
@ -43,7 +43,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nfs_socket.c,v 1.71 2002/01/22 09:37:59 minoura Exp $");
__KERNEL_RCSID(0, "$NetBSD: nfs_socket.c,v 1.72 2002/02/27 03:46:36 lukem Exp $");
#include "fs_nfs.h"
#include "opt_nfs.h"
@ -167,7 +167,6 @@ nfs_connect(nmp, rep)
struct sockaddr_in6 *sin6;
#endif
struct mbuf *m;
u_int16_t tport;
nmp->nm_so = (struct socket *)0;
saddr = mtod(nmp->nm_nam, struct sockaddr *);
@ -182,32 +181,36 @@ nfs_connect(nmp, rep)
* Some servers require that the client port be a reserved port number.
*/
if (saddr->sa_family == AF_INET && (nmp->nm_flag & NFSMNT_RESVPORT)) {
MGET(m, M_WAIT, MT_SOOPTS);
*mtod(m, int32_t *) = IP_PORTRANGE_LOW;
m->m_len = sizeof(int32_t);
if ((error = sosetopt(so, IPPROTO_IP, IP_PORTRANGE, m)))
goto bad;
MGET(m, M_WAIT, MT_SONAME);
sin = mtod(m, struct sockaddr_in *);
sin->sin_len = m->m_len = sizeof (struct sockaddr_in);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_ANY;
tport = IPPORT_RESERVED - 1;
sin->sin_port = htons(tport);
while ((error = sobind(so, m, &proc0)) == EADDRINUSE &&
--tport > IPPORT_RESERVED / 2)
sin->sin_port = htons(tport);
sin->sin_port = 0;
error = sobind(so, m, &proc0);
m_freem(m);
if (error)
goto bad;
}
#ifdef INET6
if (saddr->sa_family == AF_INET6 && (nmp->nm_flag & NFSMNT_RESVPORT)) {
MGET(m, M_WAIT, MT_SOOPTS);
*mtod(m, int32_t *) = IPV6_PORTRANGE_LOW;
m->m_len = sizeof(int32_t);
if ((error = sosetopt(so, IPPROTO_IPV6, IPV6_PORTRANGE, m)))
goto bad;
MGET(m, M_WAIT, MT_SONAME);
sin6 = mtod(m, struct sockaddr_in6 *);
sin6->sin6_len = m->m_len = sizeof (struct sockaddr_in6);
sin6->sin6_family = AF_INET6;
sin6->sin6_addr = in6addr_any;
tport = IPV6PORT_RESERVED - 1;
sin6->sin6_port = htons(tport);
while ((error = sobind(so, m, &proc0)) == EADDRINUSE &&
--tport > IPV6PORT_RESERVED / 2)
sin6->sin6_port = htons(tport);
sin6->sin6_port = 0;
error = sobind(so, m, &proc0);
m_freem(m);
if (error)
goto bad;