43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/*
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* Copyright (c) 2013, 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* unistd/sysconf.c
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* Get configuration information at runtime.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <signal.h>
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#include <unistd.h>
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long sysconf(int name)
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{
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switch ( name )
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{
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case _SC_CLK_TCK: return 1000;
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case _SC_PAGESIZE: case _SC_PAGE_SIZE:
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return getpagesize();
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case _SC_OPEN_MAX: return 0x10000;
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case _SC_RTSIG_MAX: return (SIGRTMAX+1) - SIGRTMIN;
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case _SC_GETGR_R_SIZE_MAX: return -1;
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case _SC_GETPW_R_SIZE_MAX: return -1;
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case _SC_MONOTONIC_CLOCK: return _POSIX_MONOTONIC_CLOCK;
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default:
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fprintf(stderr, "%s:%u warning: %s(%i) is unsupported\n",
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__FILE__, __LINE__, __func__, name);
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return errno = EINVAL, -1;
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}
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}
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