1 /* $NetBSD: kern_resource_43.c,v 1.22 2019/01/27 02:08:39 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 1982, 1986, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)kern_resource.c 8.5 (Berkeley) 1/21/94 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: kern_resource_43.c,v 1.22 2019/01/27 02:08:39 pgoyette Exp $"); 41 42 #if defined(_KERNEL_OPT) 43 #include "opt_compat_netbsd.h" 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/file.h> 50 #include <sys/resourcevar.h> 51 #include <sys/proc.h> 52 53 #include <sys/mount.h> 54 #include <sys/syscall.h> 55 #include <sys/syscallvar.h> 56 #include <sys/syscallargs.h> 57 58 #include <compat/common/compat_mod.h> 59 60 static struct syscall_package kern_resource_43_syscalls[] = { 61 { SYS_compat_43_ogetrlimit, 0, (sy_call_t *)compat_43_sys_getrlimit }, 62 { SYS_compat_43_osetrlimit, 0, (sy_call_t *)compat_43_sys_setrlimit }, 63 { 0, 0, NULL } 64 }; 65 66 /* ARGSUSED */ 67 int 68 compat_43_sys_getrlimit(struct lwp *l, const struct compat_43_sys_getrlimit_args *uap, register_t *retval) 69 { 70 /* { 71 syscallarg(int) which; 72 syscallarg(struct orlimit *) rlp; 73 } */ 74 struct proc *p = l->l_proc; 75 int which = SCARG(uap, which); 76 struct orlimit olim; 77 78 if ((u_int)which >= RLIM_NLIMITS) 79 return (EINVAL); 80 olim.rlim_cur = p->p_rlimit[which].rlim_cur; 81 if (olim.rlim_cur == -1) 82 olim.rlim_cur = 0x7fffffff; 83 olim.rlim_max = p->p_rlimit[which].rlim_max; 84 if (olim.rlim_max == -1) 85 olim.rlim_max = 0x7fffffff; 86 return copyout(&olim, SCARG(uap, rlp), sizeof(olim)); 87 } 88 89 /* ARGSUSED */ 90 int 91 compat_43_sys_setrlimit(struct lwp *l, const struct compat_43_sys_setrlimit_args *uap, register_t *retval) 92 { 93 /* { 94 syscallarg(int) which; 95 syscallarg(const struct orlimit *) rlp; 96 } */ 97 int which = SCARG(uap, which); 98 struct orlimit olim; 99 struct rlimit lim; 100 int error; 101 102 error = copyin(SCARG(uap, rlp), &olim, sizeof(struct orlimit)); 103 if (error) 104 return (error); 105 lim.rlim_cur = olim.rlim_cur; 106 lim.rlim_max = olim.rlim_max; 107 return (dosetrlimit(l, l->l_proc, which, &lim)); 108 } 109 110 int 111 kern_resource_43_init(void) 112 { 113 114 return syscall_establish(NULL, kern_resource_43_syscalls); 115 } 116 117 int 118 kern_resource_43_fini(void) 119 { 120 121 return syscall_disestablish(NULL, kern_resource_43_syscalls); 122 } 123