52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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/*
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* poll_posix: poll compatibility wrapper for POSIX systems
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* Copyright © 2013 RealVNC Ltd.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "libusbi.h"
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int usbi_pipe(int pipefd[2])
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{
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int ret = pipe(pipefd);
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if (ret != 0) {
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return ret;
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}
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ret = fcntl(pipefd[1], F_GETFL);
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if (ret == -1) {
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usbi_dbg("Failed to get pipe fd flags: %d", errno);
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goto err_close_pipe;
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}
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ret = fcntl(pipefd[1], F_SETFL, ret | O_NONBLOCK);
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if (ret != 0) {
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usbi_dbg("Failed to set non-blocking on new pipe: %d", errno);
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goto err_close_pipe;
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}
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return 0;
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err_close_pipe:
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usbi_close(pipefd[0]);
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usbi_close(pipefd[1]);
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return ret;
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}
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