From 4d81e3074423d1bd69a29d5795ff71205814d9e1 Mon Sep 17 00:00:00 2001 From: Tomas Hozza Date: Wed, 22 May 2013 14:54:31 +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 Acked-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_kvp_daemon.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) 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);