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author | 2013-05-22 14:54:31 +0200 | |
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committer | 2013-06-03 14:13:09 -0700 | |
commit | 4d81e3074423d1bd69a29d5795ff71205814d9e1 (patch) | |
tree | 9f5885357753f0ff1fa8653caf21bed1f022eb98 /tools | |
parent | tools: hv: Check return value of setsockopt call (diff) | |
download | linux-4d81e3074423d1bd69a29d5795ff71205814d9e1.tar.gz linux-4d81e3074423d1bd69a29d5795ff71205814d9e1.tar.bz2 linux-4d81e3074423d1bd69a29d5795ff71205814d9e1.zip |
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.c | 11 |
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); |