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55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPEG-HTTP streamer. #
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# #
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# Copyright (C) 2018-2024 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program 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 #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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*****************************************************************************/
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#pragma once
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#include <errno.h>
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#include <sys/ioctl.h>
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#include "types.h"
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#ifndef US_CFG_XIOCTL_RETRIES
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# define US_CFG_XIOCTL_RETRIES 4
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#endif
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#define _XIOCTL_RETRIES ((uint)(US_CFG_XIOCTL_RETRIES))
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INLINE int us_xioctl(int fd, int request, void *arg) {
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int retries = _XIOCTL_RETRIES;
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int retval = -1;
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do {
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retval = ioctl(fd, request, arg);
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} while (
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retval
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&& retries--
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&& (
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errno == EINTR
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|| errno == EAGAIN
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|| errno == ETIMEDOUT
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)
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);
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return retval;
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}
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