From 4d81e3074423d1bd69a29d5795ff71205814d9e1 Mon Sep 17 00:00:00 2001
From: Tomas Hozza <thozza@redhat.com>
Date: Wed, 22 May 2013 14:54:31 +0200
Subject: 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 <thozza@redhat.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/hv/hv_kvp_daemon.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
(limited to 'tools/hv')
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index ae9aa1cd97fe..81cbb6ecce89 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -1490,7 +1490,16 @@ 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, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0,
addr_p, &addr_l);
--
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