d2f783303b
rlim_t is at least as large as long, so we don't need the extra variable to keep the intermediate step. We don't need the volatile either. The code was tested on i386 and amd64. Suggested by: bde X-MFC with: r278803
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/*-
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* Copyright (c) 2002 Kyle Martin <mkm@ieee.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <ulimit.h>
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long
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ulimit(int cmd, ...)
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{
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struct rlimit limit;
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va_list ap;
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rlim_t arg;
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if (cmd == UL_GETFSIZE) {
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if (getrlimit(RLIMIT_FSIZE, &limit) == -1)
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return (-1);
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limit.rlim_cur /= 512;
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if (limit.rlim_cur > LONG_MAX)
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return (LONG_MAX);
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return ((long)limit.rlim_cur);
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} else if (cmd == UL_SETFSIZE) {
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va_start(ap, cmd);
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arg = va_arg(ap, long);
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va_end(ap);
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if (arg < 0)
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arg = LONG_MAX;
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if (arg > RLIM_INFINITY / 512)
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arg = RLIM_INFINITY / 512;
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limit.rlim_max = limit.rlim_cur = arg * 512;
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/* The setrlimit() function sets errno to EPERM if needed. */
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if (setrlimit(RLIMIT_FSIZE, &limit) == -1)
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return (-1);
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return ((long)arg);
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} else {
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errno = EINVAL;
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return (-1);
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}
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}
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