1 /*- 2 * Copyright (c) 2002 Kyle Martin <mkm@ieee.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/lib/libc/gen/ulimit.c,v 1.3 2003/01/04 01:11:49 tjr Exp $ 27 * $DragonFly: src/lib/libc/gen/ulimit.c,v 1.1 2004/06/06 13:32:27 hmp Exp $ 28 */ 29 30 #include <sys/types.h> 31 #include <sys/time.h> 32 #include <sys/resource.h> 33 34 #include <errno.h> 35 #include <limits.h> 36 #include <stdarg.h> 37 #include <ulimit.h> 38 39 long 40 ulimit(int cmd, ...) 41 { 42 struct rlimit limit; 43 va_list ap; 44 long arg; 45 46 if (cmd == UL_GETFSIZE) { 47 if (getrlimit(RLIMIT_FSIZE, &limit) == -1) 48 return (-1); 49 limit.rlim_cur /= 512; 50 if (limit.rlim_cur > LONG_MAX) 51 return (LONG_MAX); 52 return ((long)limit.rlim_cur); 53 } else if (cmd == UL_SETFSIZE) { 54 va_start(ap, cmd); 55 arg = va_arg(ap, long); 56 va_end(ap); 57 limit.rlim_max = limit.rlim_cur = (rlim_t)arg * 512; 58 59 /* The setrlimit() function sets errno to EPERM if needed. */ 60 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) 61 return (-1); 62 if (arg * 512 > LONG_MAX) 63 return (LONG_MAX); 64 return (arg); 65 } else { 66 errno = EINVAL; 67 return (-1); 68 } 69 } 70