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net: pass a sockptr_t into ->setsockopt

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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>
This commit is contained in:
Christoph Hellwig
2020-07-23 08:09:07 +02:00
committed by David S. Miller
parent d38d2b00ba
commit a7b75c5a8c
61 changed files with 246 additions and 258 deletions
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16
net/decnet/af_decnet.c
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@@ -150,7 +150,8 @@ static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE];
static struct hlist_head dn_wild_sk;
static atomic_long_t decnet_memory_allocated;
static int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen, int flags);
static int __dn_setsockopt(struct socket *sock, int level, int optname,
sockptr_t optval, unsigned int optlen, int flags);
static int __dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen, int flags);
static struct hlist_head *dn_find_list(struct sock *sk)
@@ -1320,7 +1321,8 @@ out:
return err;
}
static int dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
static int dn_setsockopt(struct socket *sock, int level, int optname,
sockptr_t optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
int err;
@@ -1332,14 +1334,14 @@ static int dn_setsockopt(struct socket *sock, int level, int optname, char __use
/* we need to exclude all possible ENOPROTOOPTs except default case */
if (err == -ENOPROTOOPT && optname != DSO_LINKINFO &&
optname != DSO_STREAM && optname != DSO_SEQPACKET)
err = nf_setsockopt(sk, PF_DECnet, optname,
USER_SOCKPTR(optval), optlen);
err = nf_setsockopt(sk, PF_DECnet, optname, optval, optlen);
#endif
return err;
}
static int __dn_setsockopt(struct socket *sock, int level,int optname, char __user *optval, unsigned int optlen, int flags)
static int __dn_setsockopt(struct socket *sock, int level, int optname,
sockptr_t optval, unsigned int optlen, int flags)
{
struct sock *sk = sock->sk;
struct dn_scp *scp = DN_SK(sk);
@@ -1355,13 +1357,13 @@ static int __dn_setsockopt(struct socket *sock, int level,int optname, char __us
} u;
int err;
if (optlen && !optval)
if (optlen && sockptr_is_null(optval))
return -EINVAL;
if (optlen > sizeof(u))
return -EINVAL;
if (copy_from_user(&u, optval, optlen))
if (copy_from_sockptr(&u, optval, optlen))
return -EFAULT;
switch (optname) {