usr/src/lib/libcompat/4.1/vlimit.c

/*-
 * Copyright (c) 1980, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This module is believed to contain source code proprietary to AT&T.
 * Use and redistribution is subject to the Berkeley Software License
 * Agreement and your Software Agreement with AT&T (Western Electric).
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)vlimit.c    8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */

/*
 * (Almost) backwards compatible vlimit.
 */
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <errno.h>

/* LIM_NORAISE is not emulated */
#define LIM_NORAISE     0       /* if <> 0, can't raise limits */
#define LIM_CPU         1       /* max secs cpu time */
#define LIM_FSIZE       2       /* max size of file created */
#define LIM_DATA        3       /* max growth of data space */
#define LIM_STACK       4       /* max growth of stack */
#define LIM_CORE        5       /* max size of ``core'' file */
#define LIM_MAXRSS      6       /* max desired data+stack core usage */

#define NLIMITS         6

vlimit(limit, value)
        int limit, value;
{
        struct rlimit rlim;

        if (limit <= 0 || limit > NLIMITS)
                return (EINVAL);
        if (value == -1) {
                if (getrlimit(limit - 1, &rlim) < 0)
                        return (-1);
                return (rlim.rlim_cur);
        }
        rlim.rlim_cur = value;
        rlim.rlim_max = RLIM_INFINITY;
        return (setrlimit(limit - 1, &rlim));
}