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authorChristoph Hellwig <hch@lst.de>2020-07-23 09:09:07 +0300
committerDavid S. Miller <davem@davemloft.net>2020-07-25 01:41:54 +0300
commita7b75c5a8c41445f33efb663887ff5f5c3b4454b (patch)
treea87e011ba3a0d76fda030b3a62080caa97fae1ef /net/kcm
parentd38d2b00ba64b3f2f30d70a7929000606d2c4509 (diff)
downloadlinux-a7b75c5a8c41445f33efb663887ff5f5c3b4454b.tar.xz
net: pass a sockptr_t into ->setsockopt
Rework the remaining setsockopt code to pass a sockptr_t instead of a plain user pointer. This removes the last remaining set_fs(KERNEL_DS) outside of architecture specific code. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> [ieee802154] Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/kcm')
-rw-r--r--net/kcm/kcmsock.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index 56fac24a627a..56dad9565bc9 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -1265,7 +1265,7 @@ static void kcm_recv_enable(struct kcm_sock *kcm)
}
static int kcm_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
+ sockptr_t optval, unsigned int optlen)
{
struct kcm_sock *kcm = kcm_sk(sock->sk);
int val, valbool;
@@ -1277,8 +1277,8 @@ static int kcm_setsockopt(struct socket *sock, int level, int optname,
if (optlen < sizeof(int))
return -EINVAL;
- if (get_user(val, (int __user *)optval))
- return -EINVAL;
+ if (copy_from_sockptr(&val, optval, sizeof(int)))
+ return -EFAULT;
valbool = val ? 1 : 0;