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>
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@ -1490,7 +1490,16 @@ int main(void)
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socklen_t addr_l = sizeof(addr);
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socklen_t addr_l = sizeof(addr);
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pfd.events = POLLIN;
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pfd.events = POLLIN;
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pfd.revents = 0;
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pfd.revents = 0;
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poll(&pfd, 1, -1);
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if (poll(&pfd, 1, -1) < 0) {
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syslog(LOG_ERR, "poll failed; error: %d %s", errno, strerror(errno));
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if (errno == EINVAL) {
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close(fd);
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exit(EXIT_FAILURE);
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}
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else
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continue;
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}
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len = recvfrom(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0,
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len = recvfrom(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0,
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addr_p, &addr_l);
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addr_p, &addr_l);
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