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NLM: Rewrite IPv4 privileged requester's check

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Clean up.

For consistency, rewrite the IPv4 check to match the same style as the
new IPv6 check.  Note that ipv4_is_loopback() is somewhat broader in
its interpretation of what is a loopback address than simply
"127.0.0.1".

Signed-off-by: Chuck Lever <[email protected]>
Signed-off-by: J. Bruce Fields <[email protected]>
This commit is contained in:
Chuck Lever authored and J. Bruce Fields committed 2009-01-06 11:53:56 -05:00
1 parent d1208f7073
commit 57ef692588
1 file changed
+5 -2
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include/linux/lockd/lockd.h
+5 -2
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@@ -291,8 +291,11 @@ static inline struct inode *nlmsvc_file_inode(struct nlm_file *file)
static inline int __nlm_privileged_request4(const struct sockaddr *sap)
{
const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
return (sin->sin_addr.s_addr == htonl(INADDR_LOOPBACK)) &&
(ntohs(sin->sin_port) < 1024);
if (ntohs(sin->sin_port) > 1023)
return 0;
return ipv4_is_loopback(sin->sin_addr.s_addr);
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)