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33 lines
1.4 KiB
33 lines
1.4 KiB
3 years ago
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/* Implementation limits related to sys/uio.h - Linux version.
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Copyright (C) 2017-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C 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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The GNU C 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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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _BITS_UIO_LIM_H
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#define _BITS_UIO_LIM_H 1
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/* Maximum length of the 'struct iovec' array in a single call to
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readv or writev.
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This macro has different values in different kernel versions. The
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latest versions of the kernel use 1024 and this is good choice. Since
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the C library implementation of readv/writev is able to emulate the
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functionality even if the currently running kernel does not support
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this large value the readv/writev call will not fail because of this. */
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#define __IOV_MAX 1024
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#endif
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