1 /* $NetBSD: linux_sig_notalpha.c,v 1.27 2003/01/18 21:21:32 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Frank van der Linden and Eric Haszlakiewicz.
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 /*
40 * heavily from: svr4_signal.c,v 1.7 1995/01/09 01:04:21 christos Exp
41 */
42
43 #include <sys/cdefs.h>
44 __KERNEL_RCSID(0, "$NetBSD: linux_sig_notalpha.c,v 1.27 2003/01/18 21:21:32 thorpej Exp $");
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/proc.h>
49 #include <sys/filedesc.h>
50 #include <sys/mount.h>
51 #include <sys/kernel.h>
52 #include <sys/signal.h>
53 #include <sys/signalvar.h>
54
55 #include <sys/sa.h>
56 #include <sys/syscallargs.h>
57
58 #include <compat/linux/common/linux_types.h>
59 #include <compat/linux/common/linux_signal.h>
60 #include <compat/linux/common/linux_util.h>
61
62 #include <compat/linux/linux_syscallargs.h>
63
64 /* Used on: arm, i386, m68k, mips, sparc, sparc64 */
65 /* Not used on: alpha */
66
67 /*
68 * The Linux signal() system call. I think that the signal() in the C
69 * library actually calls sigaction, so I doubt this one is ever used.
70 * But hey, it can't hurt having it here. The same restrictions as for
71 * sigaction() apply.
72 */
73 int
74 linux_sys_signal(l, v, retval)
75 struct lwp *l;
76 void *v;
77 register_t *retval;
78 {
79 struct linux_sys_signal_args /* {
80 syscallarg(int) signum;
81 syscallarg(linux_handler_t) handler;
82 } */ *uap = v;
83 struct proc *p = l->l_proc;
84 struct sigaction nbsa, obsa;
85 int error, sig;
86
87 *retval = -1;
88 sig = SCARG(uap, signum);
89 if (sig < 0 || sig >= LINUX__NSIG)
90 return (EINVAL);
91
92 nbsa.sa_handler = SCARG(uap, handler);
93 sigemptyset(&nbsa.sa_mask);
94 nbsa.sa_flags = SA_RESETHAND | SA_NODEFER;
95 error = sigaction1(p, linux_to_native_signo[sig],
96 &nbsa, &obsa, NULL, 0);
97 if (error == 0)
98 *retval = (int)obsa.sa_handler;
99 return (error);
100 }
101
102
103 /* ARGSUSED */
104 int
105 linux_sys_siggetmask(l, v, retval)
106 struct lwp *l;
107 void *v;
108 register_t *retval;
109 {
110 struct proc *p = l->l_proc;
111 sigset_t bss;
112 linux_old_sigset_t lss;
113 int error;
114
115 error = sigprocmask1(p, SIG_SETMASK, 0, &bss);
116 if (error)
117 return (error);
118 native_to_linux_old_sigset(&lss, &bss);
119 return (0);
120 }
121
122 /*
123 * The following three functions fiddle with a process' signal mask.
124 * Convert the signal masks because of the different signal
125 * values for Linux. The need for this is the reason why
126 * they are here, and have not been mapped directly.
127 */
128 int
129 linux_sys_sigsetmask(l, v, retval)
130 struct lwp *l;
131 void *v;
132 register_t *retval;
133 {
134 struct linux_sys_sigsetmask_args /* {
135 syscallarg(linux_old_sigset_t) mask;
136 } */ *uap = v;
137 struct proc *p = l->l_proc;
138 sigset_t nbss, obss;
139 linux_old_sigset_t nlss, olss;
140 int error;
141
142 nlss = SCARG(uap, mask);
143 linux_old_to_native_sigset(&nbss, &nlss);
144 error = sigprocmask1(p, SIG_SETMASK, &nbss, &obss);
145 if (error)
146 return (error);
147 native_to_linux_old_sigset(&olss, &obss);
148 *retval = olss;
149 return (0);
150 }
151
152 int
153 linux_sys_sigprocmask(l, v, retval)
154 struct lwp *l;
155 void *v;
156 register_t *retval;
157 {
158 struct linux_sys_sigprocmask_args /* {
159 syscallarg(int) how;
160 syscallarg(const linux_old_sigset_t *) set;
161 syscallarg(linux_old_sigset_t *) oset;
162 } */ *uap = v;
163 struct proc *p = l->l_proc;
164
165 return(linux_sigprocmask1(p, SCARG(uap, how),
166 SCARG(uap, set), SCARG(uap, oset)));
167 }
168
169 /*
170 * The deprecated pause(2), which is really just an instance
171 * of sigsuspend(2).
172 */
173 int
174 linux_sys_pause(l, v, retval)
175 struct lwp *l;
176 void *v;
177 register_t *retval;
178 {
179 struct proc *p = l->l_proc;
180
181 return (sigsuspend1(p, 0));
182 }
183
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