1 /* $NetBSD: linux32_resource.c,v 1.13 2021/12/02 04:29:49 ryo Exp $ */
2
3 /*-
4 * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Emmanuel Dreyfus
17 * 4. The name of the author may not be used to endorse or promote
18 * products derived from this software without specific prior written
19 * permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35
36 __KERNEL_RCSID(0, "$NetBSD: linux32_resource.c,v 1.13 2021/12/02 04:29:49 ryo Exp $");
37
38 #include <sys/types.h>
39 #include <sys/param.h>
40 #include <sys/fstypes.h>
41 #include <sys/signal.h>
42 #include <sys/dirent.h>
43 #include <sys/kernel.h>
44 #include <sys/fcntl.h>
45 #include <sys/select.h>
46 #include <sys/proc.h>
47 #include <sys/resourcevar.h>
48 #include <sys/ucred.h>
49 #include <sys/swap.h>
50
51 #include <machine/types.h>
52
53 #include <sys/syscallargs.h>
54
55 #include <compat/netbsd32/netbsd32.h>
56 #include <compat/netbsd32/netbsd32_conv.h>
57 #include <compat/netbsd32/netbsd32_syscallargs.h>
58
59 #include <compat/linux/common/linux_types.h>
60 #include <compat/linux/common/linux_signal.h>
61 #include <compat/linux/common/linux_machdep.h>
62 #include <compat/linux/common/linux_misc.h>
63 #include <compat/linux/common/linux_limit.h>
64 #include <compat/linux/common/linux_oldolduname.h>
65 #include <compat/linux/common/linux_ipc.h>
66 #include <compat/linux/common/linux_sem.h>
67 #include <compat/linux/linux_syscallargs.h>
68
69 #include <compat/linux32/common/linux32_types.h>
70 #include <compat/linux32/common/linux32_signal.h>
71 #include <compat/linux32/common/linux32_machdep.h>
72 #include <compat/linux32/common/linux32_sysctl.h>
73 #include <compat/linux32/common/linux32_socketcall.h>
74 #include <compat/linux32/linux32_syscallargs.h>
75
76 int
linux32_sys_getrlimit(struct lwp * l,const struct linux32_sys_getrlimit_args * uap,register_t * retval)77 linux32_sys_getrlimit(struct lwp *l, const struct linux32_sys_getrlimit_args *uap, register_t *retval)
78 {
79 /* {
80 syscallarg(int) which;
81 syscallarg(netbsd32_orlimitp_t) rlp;
82 } */
83 struct orlimit orl;
84 int which;
85
86 which = linux_to_bsd_limit(SCARG(uap, which));
87 if (which < 0)
88 return -which;
89
90 memset(&orl, 0, sizeof(orl));
91 bsd_to_linux_rlimit(&orl, &l->l_proc->p_rlimit[which]);
92
93 return copyout(&orl, SCARG_P32(uap, rlp), sizeof(orl));
94 }
95
96 int
linux32_sys_setrlimit(struct lwp * l,const struct linux32_sys_setrlimit_args * uap,register_t * retval)97 linux32_sys_setrlimit(struct lwp *l, const struct linux32_sys_setrlimit_args *uap, register_t *retval)
98 {
99 /* {
100 syscallarg(int) which;
101 syscallarg(netbsd32_orlimitp_t) rlp;
102 } */
103 struct rlimit rl;
104 struct orlimit orl;
105 int error;
106 int which;
107
108 if ((error = copyin(SCARG_P32(uap, rlp), &orl, sizeof(orl))) != 0)
109 return error;
110
111 which = linux_to_bsd_limit(SCARG(uap, which));
112 if (which < 0)
113 return -which;
114
115 linux32_to_bsd_rlimit(&rl, &orl);
116
117 return dosetrlimit(l, l->l_proc, which, &rl);
118 }
119
120 int
linux32_sys_ugetrlimit(struct lwp * l,const struct linux32_sys_ugetrlimit_args * uap,register_t * retval)121 linux32_sys_ugetrlimit(struct lwp *l, const struct linux32_sys_ugetrlimit_args *uap, register_t *retval)
122 {
123 return linux32_sys_getrlimit(l, (const void *)uap, retval);
124 }
125
126 int
linux32_sys_prlimit64(struct lwp * l,const struct linux32_sys_prlimit64_args * uap,register_t * retval)127 linux32_sys_prlimit64(struct lwp *l, const struct linux32_sys_prlimit64_args *uap, register_t *retval)
128 {
129 /* {
130 syscallarg(pid_t) pid;
131 syscallarg(int) which;
132 syscallarg(netbsd32_rlimitp_t) new_rlp;
133 syscallarg(netbsd32_rlimitp_t) old_rlp;
134 }; */
135 struct rlimit rl, nrl, orl;
136 struct rlimit *p;
137 int which;
138 int error;
139
140 /* XXX: Cannot operate any process other than its own */
141 if (SCARG(uap, pid) != 0)
142 return EPERM;
143
144 which = linux_to_bsd_limit(SCARG(uap, which));
145 if (which < 0)
146 return -which;
147
148 p = SCARG_P32(uap, old_rlp);
149 if (p != NULL) {
150 memset(&orl, 0, sizeof(orl));
151 bsd_to_linux_rlimit64(&orl, &l->l_proc->p_rlimit[which]);
152 if ((error = copyout(&orl, p, sizeof(orl))) != 0)
153 return error;
154 }
155
156 p = SCARG_P32(uap, new_rlp);
157 if (p != NULL) {
158 if ((error = copyin(p, &nrl, sizeof(nrl))) != 0)
159 return error;
160
161 linux_to_bsd_rlimit(&rl, &nrl);
162 return dosetrlimit(l, l->l_proc, which, &rl);
163 }
164
165 return 0;
166 }
167
168 int
linux32_sys_getpriority(struct lwp * l,const struct linux32_sys_getpriority_args * uap,register_t * retval)169 linux32_sys_getpriority(struct lwp *l, const struct linux32_sys_getpriority_args *uap, register_t *retval)
170 {
171 /* {
172 syscallarg(int) which;
173 syscallarg(int) who;
174 } */
175 struct sys_getpriority_args bsa;
176 int error;
177
178 SCARG(&bsa, which) = SCARG(uap, which);
179 SCARG(&bsa, who) = SCARG(uap, who);
180
181 if ((error = sys_getpriority(l, &bsa, retval)))
182 return error;
183
184 *retval = NZERO - *retval;
185
186 return 0;
187 }
188