From 9561d479314f16b41563f73511fb61d91de4642f Mon Sep 17 00:00:00 2001 From: Tomas Hozza Date: Thu, 27 Jun 2013 13:52:49 +0200 Subject: [PATCH] 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: Tomas Hozza Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_vss_daemon.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c index 64112e193552..5febe3542f79 100644 --- a/tools/hv/hv_vss_daemon.c +++ b/tools/hv/hv_vss_daemon.c @@ -200,7 +200,16 @@ int main(void) socklen_t addr_l = sizeof(addr); pfd.events = POLLIN; 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, addr_p, &addr_l); -- 2.20.1