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authorLucian Adrian Grijincu <lucian.grijincu@gmail.com>2011-02-24 19:48:03 +0000
committerDavid S. Miller <davem@davemloft.net>2011-02-25 11:01:56 -0800
commitc486da34390846b430896a407b47f0cea3a4189c (patch)
tree2df7eb05f91354e0dc0468ed884326b121f76686 /net
parentcdf64c803e6cfec72259f7bb2654261584bb80a8 (diff)
downloadlinux-c486da34390846b430896a407b47f0cea3a4189c.tar.bz2
sysctl: ipv6: use correct net in ipv6_sysctl_rtcache_flush
Before this patch issuing these commands: fd = open("/proc/sys/net/ipv6/route/flush") unshare(CLONE_NEWNET) write(fd, "stuff") would flush the newly created net, not the original one. The equivalent ipv4 code is correct (stores the net inside ->extra1). Acked-by: Daniel Lezcano <daniel.lezcano@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/route.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a998db6e7895..904312e25a3c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2557,14 +2557,16 @@ static
int ipv6_sysctl_rtcache_flush(ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
- struct net *net = current->nsproxy->net_ns;
- int delay = net->ipv6.sysctl.flush_delay;
- if (write) {
- proc_dointvec(ctl, write, buffer, lenp, ppos);
- fib6_run_gc(delay <= 0 ? ~0UL : (unsigned long)delay, net);
- return 0;
- } else
+ struct net *net;
+ int delay;
+ if (!write)
return -EINVAL;
+
+ net = (struct net *)ctl->extra1;
+ delay = net->ipv6.sysctl.flush_delay;
+ proc_dointvec(ctl, write, buffer, lenp, ppos);
+ fib6_run_gc(delay <= 0 ? ~0UL : (unsigned long)delay, net);
+ return 0;
}
ctl_table ipv6_route_table_template[] = {
@@ -2651,6 +2653,7 @@ struct ctl_table * __net_init ipv6_route_sysctl_init(struct net *net)
if (table) {
table[0].data = &net->ipv6.sysctl.flush_delay;
+ table[0].extra1 = net;
table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh;
table[2].data = &net->ipv6.sysctl.ip6_rt_max_size;
table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;