telnet: do not check for 0 return from poll (it's impossible)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -603,21 +603,22 @@ int telnet_main(int argc UNUSED_PARAM, char **argv)
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signal(SIGINT, record_signo);
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ufds[0].fd = 0; ufds[1].fd = netfd;
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ufds[0].events = ufds[1].events = POLLIN;
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ufds[0].fd = STDIN_FILENO;
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ufds[0].events = POLLIN;
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ufds[1].fd = netfd;
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ufds[1].events = POLLIN;
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while (1) {
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switch (poll(ufds, 2, -1)) {
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case 0:
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/* timeout */
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case -1:
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if (poll(ufds, 2, -1) < 0) {
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/* error, ignore and/or log something, bay go to loop */
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if (bb_got_signal)
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con_escape();
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else
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sleep(1);
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break;
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default:
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continue;
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}
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// FIXME: reads can block. Need full bidirectional buffering.
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if (ufds[0].revents) {
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len = safe_read(STDIN_FILENO, G.buf, DATABUFSIZE);
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@ -636,6 +637,5 @@ int telnet_main(int argc UNUSED_PARAM, char **argv)
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TRACE(0, ("Read netfd (%d): %d\n", netfd, len));
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handle_net_input(len);
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}
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}
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} /* while (1) */
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}
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