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| author | Lucian Adrian Grijincu <lucian.grijincu@gmail.com> | 2011-02-24 19:48:03 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-02-25 11:01:56 -0800 |
| commit | c486da34390846b430896a407b47f0cea3a4189c (patch) | |
| tree | 2df7eb05f91354e0dc0468ed884326b121f76686 /net | |
| parent | cdf64c803e6cfec72259f7bb2654261584bb80a8 (diff) | |
| download | linux-stable-c486da34390846b430896a407b47f0cea3a4189c.tar.gz linux-stable-c486da34390846b430896a407b47f0cea3a4189c.tar.bz2 linux-stable-c486da34390846b430896a407b47f0cea3a4189c.zip | |
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.c | 17 |
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; |