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76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/* Minimum guaranteed maximum values for system limits. Linux version.
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Copyright (C) 1993-2013 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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<http://www.gnu.org/licenses/>. */
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/* The kernel header pollutes the namespace with the NR_OPEN symbol
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and defines LINK_MAX although filesystems have different maxima. A
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similar thing is true for OPEN_MAX: the limit can be changed at
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runtime and therefore the macro must not be defined. Remove this
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after including the header if necessary. */
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#ifndef NR_OPEN
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# define __undef_NR_OPEN
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#endif
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#ifndef LINK_MAX
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# define __undef_LINK_MAX
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#endif
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#ifndef OPEN_MAX
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# define __undef_OPEN_MAX
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#endif
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#ifndef ARG_MAX
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# define __undef_ARG_MAX
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#endif
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/* The kernel sources contain a file with all the needed information. */
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#include <linux/limits.h>
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/* Have to remove NR_OPEN? */
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#ifdef __undef_NR_OPEN
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# undef NR_OPEN
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# undef __undef_NR_OPEN
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#endif
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/* Have to remove LINK_MAX? */
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#ifdef __undef_LINK_MAX
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# undef LINK_MAX
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# undef __undef_LINK_MAX
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#endif
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/* Have to remove OPEN_MAX? */
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#ifdef __undef_OPEN_MAX
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# undef OPEN_MAX
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# undef __undef_OPEN_MAX
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#endif
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/* Have to remove ARG_MAX? */
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#ifdef __undef_ARG_MAX
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# undef ARG_MAX
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# undef __undef_ARG_MAX
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#endif
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/* Maximum amount by which a process can descrease its asynchronous I/O
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priority level. */
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#define AIO_PRIO_DELTA_MAX 20
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/* Maximum tty name length. */
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#define TTY_NAME_MAX 32
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/* Maximum login name length. This is arbitrary. */
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#define LOGIN_NAME_MAX 256
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/* Maximum host name length. */
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#define HOST_NAME_MAX 64
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/* Maximum message queue priority level. */
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#define MQ_PRIO_MAX 32768
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