Arseniy Krasnov says:
====================
vsock: return errors other than -ENOMEM to socket
this patchset removes behaviour, where error code returned from any
transport was always switched to ENOMEM. This works in the same way as
patch from Bobby Eshleman:
commit
c43170b7e157 ("vsock: return errors other than -ENOMEM to socket"),
but for receive calls. VMCI transport is also updated (both tx and rx
SOCK_STREAM callbacks), because it returns VMCI specific error code to
af_vsock.c (like VMCI_ERROR_*). Tx path is already merged to net, so it
was excluded from patchset in v4. At the same time, virtio and Hyper-V
transports are using general error codes, so there is no need to update
them.
vsock_test suite is also updated.
Link to v1:
https://lore.kernel.org/netdev/
97f19214-ba04-c47e-7486-
72e8aa16c690@sberdevices.ru/
Link to v2:
https://lore.kernel.org/netdev/
60abc0da-0412-6e25-eeb0-
8e32e3ec21e7@sberdevices.ru/
Link to v3:
https://lore.kernel.org/netdev/
dead4842-333a-015e-028b-
302151336ff9@sberdevices.ru/
====================
Link: https://lore.kernel.org/r/0d20e25a-640c-72c1-2dcb-7a53a05e3132@sberdevices.ru
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
read = transport->stream_dequeue(vsk, msg, len - copied, flags);
if (read < 0) {
- err = -ENOMEM;
+ err = read;
break;
}
msg_len = transport->seqpacket_dequeue(vsk, msg, flags);
if (msg_len < 0) {
- err = -ENOMEM;
+ err = msg_len;
goto out;
}
size_t len,
int flags)
{
+ ssize_t err;
+
if (flags & MSG_PEEK)
- return vmci_qpair_peekv(vmci_trans(vsk)->qpair, msg, len, 0);
+ err = vmci_qpair_peekv(vmci_trans(vsk)->qpair, msg, len, 0);
else
- return vmci_qpair_dequev(vmci_trans(vsk)->qpair, msg, len, 0);
+ err = vmci_qpair_dequev(vmci_trans(vsk)->qpair, msg, len, 0);
+
+ if (err < 0)
+ err = -ENOMEM;
+
+ return err;
}
static ssize_t vmci_transport_stream_enqueue(
exit(EXIT_FAILURE);
}
- if (errno != ENOMEM) {
+ if (errno != EFAULT) {
perror("unexpected errno of 'broken_buf'");
exit(EXIT_FAILURE);
}
exit(EXIT_FAILURE);
}
- if (errno != ENOMEM) {
+ if (errno != EFAULT) {
fprintf(stderr, "unexpected recv(2) errno %d\n", errno);
exit(EXIT_FAILURE);
}