summaryrefslogtreecommitdiff
path: root/net/ipv6/route.c
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2020-04-24 09:43:38 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2020-04-27 09:07:40 +0300
commit32927393dc1ccd60fb2bdc05b9e8e88753761469 (patch)
treec488a5564cdde7594c953219a98e22fb4865c812 /net/ipv6/route.c
parentf461d2dcd511c020a26d4d791fae595c65ed09b6 (diff)
downloadlinux-32927393dc1ccd60fb2bdc05b9e8e88753761469.tar.xz
sysctl: pass kernel pointers to ->proc_handler
Instead of having all the sysctl handlers deal with user pointers, which is rather hairy in terms of the BPF interaction, copy the input to and from userspace in common code. This also means that the strings are always NUL-terminated by the common code, making the API a little bit safer. As most handler just pass through the data to one of the common handlers a lot of the changes are mechnical. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 310cbddaa533..acdb31e38412 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -6088,9 +6088,8 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v)
#ifdef CONFIG_SYSCTL
-static
-int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net;
int delay;