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NLM: Rewrite IPv4 privileged requester's check 

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 <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Chuck Lever 2008-12-11 17:56:52 -05:00 committed by J. Bruce Fields
parent d1208f7073
commit 57ef692588
1 changed files with 5 additions and 2 deletions
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7
include/linux/lockd/lockd.h
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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) static inline int __nlm_privileged_request4(const struct sockaddr *sap)
{ {
const struct sockaddr_in *sin = (struct sockaddr_in *)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) #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)