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| author | Chuck Lever <chuck.lever@oracle.com> | 2007-02-12 00:53:37 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-12 09:48:36 -0800 |
| commit | bcdb81ae29091f6a66369aabfd8324e4a53d05dc (patch) | |
| tree | ce70eed085bd56c0b1eaffa838ca27bec94e1345 /net/sunrpc/svcsock.c | |
| parent | b92503b25c3f794cff5f96626ea3ecba8d10d254 (diff) | |
| download | linux-bcdb81ae29091f6a66369aabfd8324e4a53d05dc.tar.gz linux-bcdb81ae29091f6a66369aabfd8324e4a53d05dc.tar.bz2 linux-bcdb81ae29091f6a66369aabfd8324e4a53d05dc.zip | |
[PATCH] knfsd: SUNRPC: add a "generic" function to see if the peer uses a secure port
The only reason svcsock.c looks at a sockaddr's port is to check whether the
remote peer is connecting from a privileged port. Refactor this check to hide
processing that is specific to address format.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/sunrpc/svcsock.c')
| -rw-r--r-- | net/sunrpc/svcsock.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index a89d04bd3855..01e77b8208ce 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -938,6 +938,22 @@ svc_tcp_data_ready(struct sock *sk, int count) wake_up_interruptible(sk->sk_sleep); } +static inline int svc_port_is_privileged(struct sockaddr *sin) +{ + switch (sin->sa_family) { + case AF_INET: + return ntohs(((struct sockaddr_in *)sin)->sin_port) + < PROT_SOCK; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case AF_INET6: + return ntohs(((struct sockaddr_in6 *)sin)->sin6_port) + < PROT_SOCK; +#endif + default: + return 0; + } +} + /* * Accept a TCP connection */ @@ -984,7 +1000,7 @@ svc_tcp_accept(struct svc_sock *svsk) * hosts here, but when we get encryption, the IP of the host won't * tell us anything. For now just warn about unpriv connections. */ - if (ntohs(sin.sin_port) >= 1024) { + if (!svc_port_is_privileged((struct sockaddr *) &sin)) { dprintk(KERN_WARNING "%s: connect from unprivileged port: %s\n", serv->sv_name, @@ -1334,7 +1350,6 @@ int svc_recv(struct svc_rqst *rqstp, long timeout) { struct svc_sock *svsk = NULL; - struct sockaddr_in *sin = svc_addr_in(rqstp); struct svc_serv *serv = rqstp->rq_server; struct svc_pool *pool = rqstp->rq_pool; int len, i; @@ -1431,7 +1446,7 @@ svc_recv(struct svc_rqst *rqstp, long timeout) svsk->sk_lastrecv = get_seconds(); clear_bit(SK_OLD, &svsk->sk_flags); - rqstp->rq_secure = ntohs(sin->sin_port) < PROT_SOCK; + rqstp->rq_secure = svc_port_is_privileged(svc_addr(rqstp)); rqstp->rq_chandle.defer = svc_defer; if (serv->sv_stats) |