IPv6 support for NFS server export caches
This adds IPv6 support to the interfaces that are used to express nfsd
exports. All addressed are stored internally as IPv6; backwards
compatibility is maintained using mapped addresses.
Thanks to Bruce Fields, Brian Haley, Neil Brown and Hideaki Joshifuji
for comments
Signed-off-by: Aurelien Charbon <aurelien.charbon@bull.net>
Cc: Neil Brown <neilb@suse.de>
Cc: Brian Haley <brian.haley@hp.com>
Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 8516137..9f038a4a 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -37,6 +37,7 @@
#include <linux/nfsd/syscall.h>
#include <asm/uaccess.h>
+#include <net/ipv6.h>
/*
* We have a single directory with 9 nodes in it.
@@ -222,6 +223,7 @@
struct auth_domain *clp;
int err = 0;
struct knfsd_fh *res;
+ struct in6_addr in6;
if (size < sizeof(*data))
return -EINVAL;
@@ -236,7 +238,11 @@
res = (struct knfsd_fh*)buf;
exp_readlock();
- if (!(clp = auth_unix_lookup(sin->sin_addr)))
+
+ ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
+
+ clp = auth_unix_lookup(&in6);
+ if (!clp)
err = -EPERM;
else {
err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
@@ -257,6 +263,7 @@
int err = 0;
struct knfsd_fh fh;
char *res;
+ struct in6_addr in6;
if (size < sizeof(*data))
return -EINVAL;
@@ -271,7 +278,11 @@
res = buf;
sin = (struct sockaddr_in *)&data->gd_addr;
exp_readlock();
- if (!(clp = auth_unix_lookup(sin->sin_addr)))
+
+ ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
+
+ clp = auth_unix_lookup(&in6);
+ if (!clp)
err = -EPERM;
else {
err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);