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IPv6 support for NFS server export caches

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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>
This commit is contained in:
Aurélien Charbon
2008-01-18 15:50:56 +01:00
committed by J. Bruce Fields
parent d751a7cd06
commit f15364bd4c
5 changed files with 111 additions and 45 deletions
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15
fs/nfsd/nfsctl.c
View File

@ -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 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size)
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 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size)
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 @@ static ssize_t write_getfd(struct file *file, char *buf, size_t size)
int err = 0;
struct knfsd_fh fh;
char *res;
struct in6_addr in6;
if (size < sizeof(*data))
return -EINVAL;
@ -271,7 +278,11 @@ static ssize_t write_getfd(struct file *file, char *buf, size_t size)
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);