1 /* $NetBSD: kern_sig_13.c,v 1.20 2011/01/19 10:21:16 tsutsui Exp $ */
2
3 /*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: kern_sig_13.c,v 1.20 2011/01/19 10:21:16 tsutsui Exp $");
34
35 #include <sys/param.h>
36 #include <sys/proc.h>
37 #include <sys/signal.h>
38 #include <sys/signalvar.h>
39 #include <sys/systm.h>
40
41 #include <sys/syscallargs.h>
42
43 #include <machine/limits.h>
44
45 #include <compat/sys/signal.h>
46 #include <compat/sys/signalvar.h>
47 #include <compat/common/compat_util.h>
48 #include <compat/common/compat_sigaltstack.h>
49
50 void
native_sigset13_to_sigset(const sigset13_t * oss,sigset_t * ss)51 native_sigset13_to_sigset(const sigset13_t *oss, sigset_t *ss)
52 {
53
54 ss->__bits[0] = *oss;
55 ss->__bits[1] = 0;
56 ss->__bits[2] = 0;
57 ss->__bits[3] = 0;
58 }
59
60 void
native_sigset_to_sigset13(const sigset_t * ss,sigset13_t * oss)61 native_sigset_to_sigset13(const sigset_t *ss, sigset13_t *oss)
62 {
63
64 *oss = ss->__bits[0];
65 }
66
67 void
native_sigaction13_to_sigaction(const struct sigaction13 * osa,struct sigaction * sa)68 native_sigaction13_to_sigaction(const struct sigaction13 *osa, struct sigaction *sa)
69 {
70
71 sa->sa_handler = osa->osa_handler;
72 native_sigset13_to_sigset(&osa->osa_mask, &sa->sa_mask);
73 sa->sa_flags = osa->osa_flags;
74 }
75
76 void
native_sigaction_to_sigaction13(const struct sigaction * sa,struct sigaction13 * osa)77 native_sigaction_to_sigaction13(const struct sigaction *sa, struct sigaction13 *osa)
78 {
79
80 osa->osa_handler = sa->sa_handler;
81 native_sigset_to_sigset13(&sa->sa_mask, &osa->osa_mask);
82 osa->osa_flags = sa->sa_flags;
83 }
84
85 int
compat_13_sys_sigaltstack(struct lwp * l,const struct compat_13_sys_sigaltstack_args * uap,register_t * retval)86 compat_13_sys_sigaltstack(struct lwp *l, const struct compat_13_sys_sigaltstack_args *uap, register_t *retval)
87 {
88 /* {
89 syscallarg(const struct sigaltstack13 *) nss;
90 syscallarg(struct sigaltstack13 *) oss;
91 } */
92 compat_sigaltstack(uap, sigaltstack13, SS_ONSTACK, SS_DISABLE);
93 }
94
95 int
compat_13_sys_sigaction(struct lwp * l,const struct compat_13_sys_sigaction_args * uap,register_t * retval)96 compat_13_sys_sigaction(struct lwp *l, const struct compat_13_sys_sigaction_args *uap, register_t *retval)
97 {
98 /* {
99 syscallarg(int) signum;
100 syscallarg(const struct sigaction13 *) nsa;
101 syscallarg(struct sigaction13 *) osa;
102 } */
103 struct sigaction13 nesa, oesa;
104 struct sigaction nbsa, obsa;
105 int error;
106
107 if (SCARG(uap, nsa)) {
108 error = copyin(SCARG(uap, nsa), &nesa, sizeof(nesa));
109 if (error)
110 return (error);
111 native_sigaction13_to_sigaction(&nesa, &nbsa);
112 }
113 error = sigaction1(l, SCARG(uap, signum),
114 SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0,
115 NULL, 0);
116 if (error)
117 return (error);
118 if (SCARG(uap, osa)) {
119 native_sigaction_to_sigaction13(&obsa, &oesa);
120 error = copyout(&oesa, SCARG(uap, osa), sizeof(oesa));
121 if (error)
122 return (error);
123 }
124 return (0);
125 }
126
127 int
compat_13_sys_sigprocmask(struct lwp * l,const struct compat_13_sys_sigprocmask_args * uap,register_t * retval)128 compat_13_sys_sigprocmask(struct lwp *l, const struct compat_13_sys_sigprocmask_args *uap, register_t *retval)
129 {
130 /* {
131 syscallarg(int) how;
132 syscallarg(int) mask;
133 } */
134 struct proc *p = l->l_proc;
135 sigset13_t ness, oess;
136 sigset_t nbss, obss;
137 int error;
138
139 ness = SCARG(uap, mask);
140 native_sigset13_to_sigset(&ness, &nbss);
141 mutex_enter(p->p_lock);
142 error = sigprocmask1(l, SCARG(uap, how), &nbss, &obss);
143 mutex_exit(p->p_lock);
144 if (error)
145 return (error);
146 native_sigset_to_sigset13(&obss, &oess);
147 *retval = oess;
148 return (0);
149 }
150
151 int
compat_13_sys_sigpending(struct lwp * l,const void * v,register_t * retval)152 compat_13_sys_sigpending(struct lwp *l, const void *v, register_t *retval)
153 {
154 sigset13_t ess;
155 sigset_t bss;
156
157 sigpending1(l, &bss);
158 native_sigset_to_sigset13(&bss, &ess);
159 *retval = ess;
160 return (0);
161 }
162
163 int
compat_13_sys_sigsuspend(struct lwp * l,const struct compat_13_sys_sigsuspend_args * uap,register_t * retval)164 compat_13_sys_sigsuspend(struct lwp *l, const struct compat_13_sys_sigsuspend_args *uap, register_t *retval)
165 {
166 /* {
167 syscallarg(sigset13_t) mask;
168 } */
169 sigset13_t ess;
170 sigset_t bss;
171
172 ess = SCARG(uap, mask);
173 native_sigset13_to_sigset(&ess, &bss);
174 return (sigsuspend1(l, &bss));
175 }
176