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kern_resource_43.c revision 1.21.96.1 
      1 /*	$NetBSD: kern_resource_43.c,v 1.21.96.1 2018/04/17 00:02:58 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 1.21.96.1 2018/04/17 00:02:58 pgoyette Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/kernel.h>
     45 #include <sys/file.h>
     46 #include <sys/resourcevar.h>
     47 #include <sys/proc.h>
     48 
     49 #include <sys/mount.h>
     50 #include <sys/syscall.h>
     51 #include <sys/syscallvar.h>
     52 #include <sys/syscallargs.h>
     53 
     54 #include <compat/common/compat_mod.h>
     55 
     56 static struct syscall_package kern_resource_43_syscalls[] = {
     57 	{ SYS_compat_43_ogetrlimit, 0, (sy_call_t *)compat_43_sys_getrlimit },
     58 	{ SYS_compat_43_osetrlimit, 0, (sy_call_t *)compat_43_sys_setrlimit },
     59 	{ 0, 0, NULL }
     60 };
     61 
     62 /* ARGSUSED */
     63 int
     64 compat_43_sys_getrlimit(struct lwp *l, const struct compat_43_sys_getrlimit_args *uap, register_t *retval)
     65 {
     66 	/* {
     67 		syscallarg(int) which;
     68 		syscallarg(struct orlimit *) rlp;
     69 	} */
     70 	struct proc *p = l->l_proc;
     71 	int which = SCARG(uap, which);
     72 	struct orlimit olim;
     73 
     74 	if ((u_int)which >= RLIM_NLIMITS)
     75 		return (EINVAL);
     76 	olim.rlim_cur = p->p_rlimit[which].rlim_cur;
     77 	if (olim.rlim_cur == -1)
     78 		olim.rlim_cur = 0x7fffffff;
     79 	olim.rlim_max = p->p_rlimit[which].rlim_max;
     80 	if (olim.rlim_max == -1)
     81 		olim.rlim_max = 0x7fffffff;
     82 	return copyout(&olim, SCARG(uap, rlp), sizeof(olim));
     83 }
     84 
     85 /* ARGSUSED */
     86 int
     87 compat_43_sys_setrlimit(struct lwp *l, const struct compat_43_sys_setrlimit_args *uap, register_t *retval)
     88 {
     89 	/* {
     90 		syscallarg(int) which;
     91 		syscallarg(const struct orlimit *) rlp;
     92 	} */
     93 	int which = SCARG(uap, which);
     94 	struct orlimit olim;
     95 	struct rlimit lim;
     96 	int error;
     97 
     98 	error = copyin(SCARG(uap, rlp), &olim, sizeof(struct orlimit));
     99 	if (error)
    100 		return (error);
    101 	lim.rlim_cur = olim.rlim_cur;
    102 	lim.rlim_max = olim.rlim_max;
    103 	return (dosetrlimit(l, l->l_proc, which, &lim));
    104 }
    105 
    106 int
    107 kern_resource_43_init(void)
    108 {
    109 
    110 	return syscall_establish(NULL, kern_resource_43_syscalls);
    111 }
    112 
    113 int
    114 kern_resource_43_fini(void)
    115 {
    116 
    117 	return syscall_disestablish(NULL, kern_resource_43_syscalls);
    118 }
    119