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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-11-28 15:52:29 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-02-04 01:34:15 -0500 |
| commit | f25dcc7687d42a72de18aa41b04990a24c9e77c7 (patch) | |
| tree | 37b428117d042baa6cd67333bd9fdf567f85ef47 /net/tipc/msg.c | |
| parent | 21226abb4e9f14d88238964d89b279e461ddc30c (diff) | |
| download | linux-f25dcc7687d42a72de18aa41b04990a24c9e77c7.tar.gz linux-f25dcc7687d42a72de18aa41b04990a24c9e77c7.tar.bz2 linux-f25dcc7687d42a72de18aa41b04990a24c9e77c7.zip | |
tipc: tipc ->sendmsg() conversion
This one needs to copy the same data from user potentially more than
once. Sadly, MTU changes can trigger that ;-/
Cc: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net/tipc/msg.c')
| -rw-r--r-- | net/tipc/msg.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/net/tipc/msg.c b/net/tipc/msg.c index 18aba9e99345..da67c8d3edc6 100644 --- a/net/tipc/msg.c +++ b/net/tipc/msg.c @@ -189,7 +189,6 @@ err: * tipc_msg_build - create buffer chain containing specified header and data * @mhdr: Message header, to be prepended to data * @m: User message - * @offset: Posision in iov to start copying from * @dsz: Total length of user data * @pktmax: Max packet size that can be used * @list: Buffer or chain of buffers to be returned to caller @@ -221,8 +220,7 @@ int tipc_msg_build(struct net *net, struct tipc_msg *mhdr, struct msghdr *m, __skb_queue_tail(list, skb); skb_copy_to_linear_data(skb, mhdr, mhsz); pktpos = skb->data + mhsz; - if (!dsz || !memcpy_fromiovecend(pktpos, m->msg_iter.iov, offset, - dsz)) + if (copy_from_iter(pktpos, dsz, &m->msg_iter) == dsz) return dsz; rc = -EFAULT; goto error; @@ -252,12 +250,11 @@ int tipc_msg_build(struct net *net, struct tipc_msg *mhdr, struct msghdr *m, if (drem < pktrem) pktrem = drem; - if (memcpy_fromiovecend(pktpos, m->msg_iter.iov, offset, pktrem)) { + if (copy_from_iter(pktpos, pktrem, &m->msg_iter) != pktrem) { rc = -EFAULT; goto error; } drem -= pktrem; - offset += pktrem; if (!drem) break; |