summaryrefslogtreecommitdiffstats
path: root/net/tipc/msg.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/tipc/msg.c')
-rw-r--r--net/tipc/msg.c22
1 files changed, 9 insertions, 13 deletions
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index ced60e2fc4f7..1e76d91e5691 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -76,10 +76,11 @@ int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
u32 num_sect, unsigned int total_len, int max_size,
struct sk_buff **buf)
{
- int dsz, sz, hsz, pos, res, cnt;
+ int dsz, sz, hsz;
+ unsigned char *to;
dsz = total_len;
- pos = hsz = msg_hdr_sz(hdr);
+ hsz = msg_hdr_sz(hdr);
sz = hsz + dsz;
msg_set_size(hdr, sz);
if (unlikely(sz > max_size)) {
@@ -91,16 +92,11 @@ int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
if (!(*buf))
return -ENOMEM;
skb_copy_to_linear_data(*buf, hdr, hsz);
- for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) {
- skb_copy_to_linear_data_offset(*buf, pos,
- msg_sect[cnt].iov_base,
- msg_sect[cnt].iov_len);
- pos += msg_sect[cnt].iov_len;
+ to = (*buf)->data + hsz;
+ if (total_len && memcpy_fromiovecend(to, msg_sect, 0, dsz)) {
+ kfree_skb(*buf);
+ *buf = NULL;
+ return -EFAULT;
}
- if (likely(res))
- return dsz;
-
- kfree_skb(*buf);
- *buf = NULL;
- return -EFAULT;
+ return dsz;
}