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netdev-linux: Report error for truncated packets on receive.

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Found by inspection.

Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2011-12-02 15:22:20 -08:00
parent a57a8488da
commit 02e83e83b4
2 changed files with 8 additions and 2 deletions
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7
lib/netdev-linux.c
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@@ -802,8 +802,11 @@ netdev_linux_recv(struct netdev *netdev_, void *data, size_t size)
}
for (;;) {
ssize_t retval = read(netdev->fd, data, size);
if (retval >= 0) {
ssize_t retval = recv(netdev->fd, data, size, MSG_TRUNC);
if (retval > size) {
/* Received packet was longer than supplied buffer. */
return -EMSGSIZE;
} else if (retval >= 0) {
return retval;
} else if (errno != EINTR) {
if (errno != EAGAIN) {