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Commit 9561d479 authored by Tomas Hozza's avatar Tomas Hozza Committed by Greg Kroah-Hartman
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tools: hv: Check return value of poll call 



Check return value of poll call and if it fails print error to the
system log. If errno is EINVAL then exit with non-zero value otherwise
continue the while loop and call poll again.

Signed-off-by: default avatarTomas Hozza <thozza@redhat.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5c289269

tools/hv/hv_vss_daemon.c

+10 −1
Original line number Original line Diff line number Diff line
@@ -200,7 +200,16 @@ int main(void) 
		socklen_t addr_l = sizeof(addr);

		socklen_t addr_l = sizeof(addr);

		pfd.events = POLLIN;

		pfd.events = POLLIN;

		pfd.revents = 0;

		pfd.revents = 0;

		poll(&pfd, 1, -1);



		if (poll(&pfd, 1, -1) < 0) {

			syslog(LOG_ERR, "poll failed; error:%d %s", errno, strerror(errno));

			if (errno == EINVAL) {

				close(fd);

				exit(EXIT_FAILURE);

			}

			else

				continue;

		}





		len = recvfrom(fd, vss_recv_buffer, sizeof(vss_recv_buffer), 0,

		len = recvfrom(fd, vss_recv_buffer, sizeof(vss_recv_buffer), 0,

				addr_p, &addr_l);

				addr_p, &addr_l);