1 /* $NetBSD: kern_resource_43.c,v 1.23 2021/09/07 11:43:02 riastradh 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 1.23 2021/09/07 11:43:02 riastradh 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
compat_43_sys_getrlimit(struct lwp * l,const struct compat_43_sys_getrlimit_args * uap,register_t * retval)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 memset(&olim, 0, sizeof(olim));
81 olim.rlim_cur = p->p_rlimit[which].rlim_cur;
82 if (olim.rlim_cur == -1)
83 olim.rlim_cur = 0x7fffffff;
84 olim.rlim_max = p->p_rlimit[which].rlim_max;
85 if (olim.rlim_max == -1)
86 olim.rlim_max = 0x7fffffff;
87 return copyout(&olim, SCARG(uap, rlp), sizeof(olim));
88 }
89
90 /* ARGSUSED */
91 int
compat_43_sys_setrlimit(struct lwp * l,const struct compat_43_sys_setrlimit_args * uap,register_t * retval)92 compat_43_sys_setrlimit(struct lwp *l, const struct compat_43_sys_setrlimit_args *uap, register_t *retval)
93 {
94 /* {
95 syscallarg(int) which;
96 syscallarg(const struct orlimit *) rlp;
97 } */
98 int which = SCARG(uap, which);
99 struct orlimit olim;
100 struct rlimit lim;
101 int error;
102
103 error = copyin(SCARG(uap, rlp), &olim, sizeof(struct orlimit));
104 if (error)
105 return (error);
106 lim.rlim_cur = olim.rlim_cur;
107 lim.rlim_max = olim.rlim_max;
108 return (dosetrlimit(l, l->l_proc, which, &lim));
109 }
110
111 int
kern_resource_43_init(void)112 kern_resource_43_init(void)
113 {
114
115 return syscall_establish(NULL, kern_resource_43_syscalls);
116 }
117
118 int
kern_resource_43_fini(void)119 kern_resource_43_fini(void)
120 {
121
122 return syscall_disestablish(NULL, kern_resource_43_syscalls);
123 }
124