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 |
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 |
61 | native_sigset_to_sigset13(const sigset_t *ss, sigset13_t *oss) |
62 | { |
63 | |
64 | *oss = ss->__bits[0]; |
65 | } |
66 | |
67 | void |
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 |
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 |
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 |
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 |
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 |
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 |
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 | |