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net: switch memcpy_fromiovec()/memcpy_fromiovecend() users to copy_from_iter()

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That takes care of the majority of ->sendmsg() instances - most of them
via memcpy_to_msg() or assorted getfrag() callbacks.  One place where we
still keep memcpy_fromiovecend() is tipc - there we potentially read the
same data over and over; separate patch, that...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2014-11-28 15:48:29 -05:00
parent 57be5bdad7
commit 21226abb4e
7 changed files with 14 additions and 18 deletions
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3
include/linux/skbuff.h
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@@ -2692,8 +2692,7 @@ int skb_vlan_push(struct sk_buff *skb, __be16 vlan_proto, u16 vlan_tci);
static inline int memcpy_from_msg(void *data, struct msghdr *msg, int len)
{
/* XXX: stripping const */
return memcpy_fromiovec(data, (struct iovec *)msg->msg_iter.iov, len);
return copy_from_iter(data, len, &msg->msg_iter) == len ? 0 : -EFAULT;
}
static inline int memcpy_to_msg(struct msghdr *msg, void *data, int len)