1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2002 Kyle Martin <[email protected]>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 #include <sys/types.h>
32 #include <sys/time.h>
33 #include <sys/resource.h>
34
35 #include <errno.h>
36 #include <limits.h>
37 #include <stdarg.h>
38 #include <ulimit.h>
39
40 long
ulimit(int cmd,...)41 ulimit(int cmd, ...)
42 {
43 struct rlimit limit;
44 va_list ap;
45 rlim_t arg;
46
47 if (cmd == UL_GETFSIZE) {
48 if (getrlimit(RLIMIT_FSIZE, &limit) == -1)
49 return (-1);
50 limit.rlim_cur /= 512;
51 if (limit.rlim_cur > LONG_MAX)
52 return (LONG_MAX);
53 return ((long)limit.rlim_cur);
54 } else if (cmd == UL_SETFSIZE) {
55 va_start(ap, cmd);
56 arg = va_arg(ap, long);
57 va_end(ap);
58 if (arg < 0)
59 arg = LONG_MAX;
60 if (arg > RLIM_INFINITY / 512)
61 arg = RLIM_INFINITY / 512;
62 limit.rlim_max = limit.rlim_cur = arg * 512;
63
64 /* The setrlimit() function sets errno to EPERM if needed. */
65 if (setrlimit(RLIMIT_FSIZE, &limit) == -1)
66 return (-1);
67 return ((long)arg);
68 } else {
69 errno = EINVAL;
70 return (-1);
71 }
72 }
73