43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/*
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* Copyright (c) 2017 Xiao Yang <yangx.jy@cn.fujitsu.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 2 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 <http://www.gnu.org/licenses/>.
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*/
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#ifndef SPLICE_H__
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#define SPLICE_H__
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#include <unistd.h>
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#include "tst_safe_file_ops.h"
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#include "tst_minmax.h"
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static inline int get_max_limit(int default_len_data)
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{
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int pipe_max_unpriv;
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if (!access("/proc/sys/fs/pipe-max-size", F_OK)) {
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SAFE_FILE_SCANF("/proc/sys/fs/pipe-max-size", "%d", &pipe_max_unpriv);
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return MIN(pipe_max_unpriv, default_len_data);
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}
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if (!access("/proc/sys/fs/pipe-max-pages", F_OK)) {
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SAFE_FILE_SCANF("/proc/sys/fs/pipe-max-pages", "%d", &pipe_max_unpriv);
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return MIN(pipe_max_unpriv * getpagesize(), default_len_data);
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}
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return default_len_data;
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}
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#endif /* SPLICE_H__ */
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