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authorTomas Hozza <thozza@redhat.com>2013-05-22 14:54:31 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-03 14:13:09 -0700
commit4d81e3074423d1bd69a29d5795ff71205814d9e1 (patch)
tree9f5885357753f0ff1fa8653caf21bed1f022eb98 /tools
parent359016032239e0a585c01bffe04b72ab037e5de4 (diff)
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>
Diffstat (limited to 'tools')
-rw-r--r--tools/hv/hv_kvp_daemon.c11
1 files changed, 10 insertions, 1 deletions
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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