xref: /netbsd-src/sys/compat/freebsd/freebsd_misc.c (revision 001c68bd94f75ce9270b69227c4199fbf34ee396)
1 /*	$NetBSD: freebsd_misc.c,v 1.19 2003/06/29 22:29:16 fvdl Exp $	*/
2 
3 /*
4  * Copyright (c) 1995 Frank van der Linden
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *      This product includes software developed for the NetBSD Project
18  *      by Frank van der Linden
19  * 4. The name of the author may not be used to endorse or promote products
20  *    derived from this software without specific prior written permission
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 /*
35  * FreeBSD compatibility module. Try to deal with various FreeBSD system calls.
36  */
37 
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: freebsd_misc.c,v 1.19 2003/06/29 22:29:16 fvdl Exp $");
40 
41 #if defined(_KERNEL_OPT)
42 #include "opt_ntp.h"
43 #include "opt_ktrace.h"
44 #endif
45 
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/proc.h>
49 #include <sys/mount.h>
50 #include <sys/signal.h>
51 #include <sys/signalvar.h>
52 #include <sys/malloc.h>
53 #ifdef KTRACE
54 #include <sys/ktrace.h>
55 #endif
56 
57 #include <sys/sa.h>
58 #include <sys/syscallargs.h>
59 
60 #include <compat/freebsd/freebsd_syscallargs.h>
61 #include <compat/common/compat_util.h>
62 #include <compat/freebsd/freebsd_rtprio.h>
63 #include <compat/freebsd/freebsd_timex.h>
64 #include <compat/freebsd/freebsd_signal.h>
65 
66 int
67 freebsd_sys_msync(l, v, retval)
68 	struct lwp *l;
69 	void *v;
70 	register_t *retval;
71 {
72 	struct freebsd_sys_msync_args /* {
73 		syscallarg(caddr_t) addr;
74 		syscallarg(size_t) len;
75 		syscallarg(int) flags;
76 	} */ *uap = v;
77 	struct sys___msync13_args bma;
78 
79 	/*
80 	 * FreeBSD-2.0-RELEASE's msync(2) is compatible with NetBSD's.
81 	 * FreeBSD-2.0.5-RELEASE's msync(2) has addtional argument `flags',
82 	 * but syscall number is not changed. :-<
83 	 */
84 	SCARG(&bma, addr) = SCARG(uap, addr);
85 	SCARG(&bma, len) = SCARG(uap, len);
86 	SCARG(&bma, flags) = SCARG(uap, flags);
87 	return sys___msync13(l, &bma, retval);
88 }
89 
90 /* just a place holder */
91 
92 int
93 freebsd_sys_rtprio(l, v, retval)
94 	struct lwp *l;
95 	void *v;
96 	register_t *retval;
97 {
98 #ifdef notyet
99 	struct freebsd_sys_rtprio_args /* {
100 		syscallarg(int) function;
101 		syscallarg(pid_t) pid;
102 		syscallarg(struct freebsd_rtprio *) rtp;
103 	} */ *uap = v;
104 #endif
105 
106 	return ENOSYS;	/* XXX */
107 }
108 
109 #ifdef NTP
110 int
111 freebsd_ntp_adjtime(l, v, retval)
112 	struct lwp *l;
113 	void *v;
114 	register_t *retval;
115 {
116 #ifdef notyet
117 	struct freebsd_ntp_adjtime_args /* {
118 		syscallarg(struct freebsd_timex *) tp;
119 	} */ *uap = v;
120 #endif
121 
122 	return ENOSYS;	/* XXX */
123 }
124 #endif
125 
126 int
127 freebsd_sys_sigaction4(l, v, retval)
128 	struct lwp *l;
129 	void *v;
130 	register_t *retval;
131 {
132 	struct freebsd_sys_sigaction4_args /* {
133 		syscallarg(int) signum;
134 		syscallarg(const struct freebsd_sigaction4 *) nsa;
135 		syscallarg(struct freebsd_sigaction4 *) osa;
136 	} */ *uap = v;
137 	struct proc *p = l->l_proc;
138 	struct freebsd_sigaction4 nesa, oesa;
139 	struct sigaction nbsa, obsa;
140 	int error;
141 
142 	if (SCARG(uap, nsa)) {
143 		error = copyin(SCARG(uap, nsa), &nesa, sizeof(nesa));
144 		if (error)
145 			return (error);
146 		nbsa.sa_handler = nesa.freebsd_sa_handler;
147 		nbsa.sa_mask    = nesa.freebsd_sa_mask;
148 		nbsa.sa_flags   = nesa.freebsd_sa_flags;
149 	}
150 	error = sigaction1(p, SCARG(uap, signum),
151 	    SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0,
152 	    NULL, 0);
153 	if (error)
154 		return (error);
155 	if (SCARG(uap, osa)) {
156 		oesa.freebsd_sa_handler = obsa.sa_handler;
157 		oesa.freebsd_sa_mask    = obsa.sa_mask;
158 		oesa.freebsd_sa_flags   = obsa.sa_flags;
159 		error = copyout(&oesa, SCARG(uap, osa), sizeof(oesa));
160 		if (error)
161 			return (error);
162 	}
163 	return (0);
164 }
165 
166 int
167 freebsd_sys_utrace(l, v, retval)
168 	struct lwp *l;
169 	void *v;
170 	register_t *retval;
171 {
172 #ifdef KTRACE
173 	struct freebsd_sys_utrace_args /* {
174 		syscallarg(void *) addr;
175 		syscallarg(size_t) len;
176 	} */ *uap = v;
177 	struct proc *p = l->l_proc;
178 
179 	if (KTRPOINT(p, KTR_USER))
180 		ktruser(p, "FreeBSD utrace", SCARG(uap, addr), SCARG(uap, len),
181 			0);
182 
183 	return (0);
184 #else
185 	return (ENOSYS);
186 #endif
187 }
188