On Mon, May 24, 2010 at 12:07:06AM -0700, Scott Feldman wrote:
> +static int
> +nlCommWaitSuccess(struct nlmsghdr *nlmsg, int nl_groups,
> + char **respbuf, int *respbuflen, long to_usecs)
> +{
> + int rc = 0;
> + struct sockaddr_nl nladdr = {
> + .nl_family = AF_NETLINK,
> + .nl_pid = getpid(),
> + .nl_groups = nl_groups,
> + };
> + int rcvChunkSize = 1024; // expecting less than that
> + int rcvoffset = 0;
> + ssize_t nbytes;
> + int n;
> + struct timeval tv = {
> + .tv_sec = to_usecs / MICROSEC_PER_SEC,
> + .tv_usec = to_usecs % MICROSEC_PER_SEC,
> + };
> + fd_set rfds;
> + bool gotvalid = false;
> + int fd = nlOpen();
> + static uint32_t seq = 0x1234;
> + uint32_t myseq = seq++;
> + uint32_t mypid = getpid();
> +
> + if (fd < 0)
> + return -1;
> +
> + nlmsg->nlmsg_pid = mypid;
> + nlmsg->nlmsg_seq = myseq;
> + nlmsg->nlmsg_flags |= NLM_F_ACK;
> +
> + nbytes = sendto(fd, (void *)nlmsg, nlmsg->nlmsg_len, 0,
> + (struct sockaddr *)&nladdr, sizeof(nladdr));
> + if (nbytes < 0) {
> + virReportSystemError(errno,
> + "%s", _("cannot send to netlink socket"));
> + rc = -1;
> + goto err_exit;
> + }
> + fprintf(stderr,"sent %d bytes\n", (int)nbytes);
Can you change that to VIR_DEBUG("send %d bytes", (int)bytes),
and likewise for all other places using fprintf() for debug
output. NB VIR_DEBUG doesn't need a trailing \n, it adds one
for you.
If you want to view the debug messages from libvirtd then
just run it using
LIBVIRT_LOG_FILTERS=1:macvtap LIBVIRT_LOG_OUTPUTS=1:stderr /usr/sbin/libvirtd
and it'll print all VIR_DEBUG() lines in macvtap.c
Daniel
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