1/*-
2 * Copyright (c) 1994-1995 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
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. The name of the author may not be used to endorse or promote products
15 * derived from this software withough specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
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41
42#define DONTMASK (sigmask(SIGKILL)|sigmask(SIGSTOP)|sigmask(SIGCHLD))
43
44static sigset_t
45linux_to_bsd_sigmask(linux_sigset_t mask) {
46 int i;
47 sigset_t new = 0;
48
49 for (i = 1; i <= LINUX_NSIG; i++)
50 if (mask & (1 << i-1))
51 new |= (1 << (linux_to_bsd_signal[i]-1));
52 return new;
53}
54
55static linux_sigset_t
56bsd_to_linux_sigmask(sigset_t mask) {
57 int i;
58 sigset_t new = 0;
59
60 for (i = 1; i <= NSIG; i++)
61 if (mask & (1 << i-1))
62 new |= (1 << (bsd_to_linux_signal[i]-1));
63 return new;
64}
65
66struct linux_sigaction_args {
67 int sig;
68 linux_sigaction_t *nsa;
69 linux_sigaction_t *osa;
70};
71
72int
73linux_sigaction(struct proc *p, struct linux_sigaction_args *args, int *retval)
74{
75 linux_sigaction_t linux_sa;
76 struct sigaction *nsa = NULL, *osa = NULL, bsd_sa;
77 struct sigaction_args {
78 int sig;
79 struct sigaction *nsa;
80 struct sigaction *osa;
81 } sa;
82 int error;
83
84#ifdef DEBUG
85 printf("Linux-emul(%d): sigaction(%d, *, *)\n", p->p_pid, args->sig);
86#endif
87 if (args->osa)
88 osa = (struct sigaction *)ua_alloc_init(sizeof(struct sigaction));
89
90 if (args->nsa) {
91 nsa = (struct sigaction *)ua_alloc(sizeof(struct sigaction));
92 if (error = copyin(args->nsa, &linux_sa, sizeof(linux_sigaction_t)))
93 return error;
94 bsd_sa.sa_mask = linux_to_bsd_sigmask(linux_sa.sa_mask);
95 bsd_sa.sa_handler = linux_sa.sa_handler;
96 bsd_sa.sa_flags = 0;
97 if (linux_sa.sa_flags & LINUX_SA_NOCLDSTOP)
98 bsd_sa.sa_flags |= SA_NOCLDSTOP;
99 if (linux_sa.sa_flags & LINUX_SA_ONSTACK)
100 bsd_sa.sa_flags |= SA_ONSTACK;
101 if (linux_sa.sa_flags & LINUX_SA_RESTART)
102 bsd_sa.sa_flags |= SA_RESTART;
103 if (error = copyout(&bsd_sa, nsa, sizeof(struct sigaction)))
104 return error;
105 }
106 sa.sig = linux_to_bsd_signal[args->sig];
107 sa.nsa = nsa;
108 sa.osa = osa;
109 if ((error = sigaction(p, &sa, retval)))
110 return error;
111
112 if (args->osa) {
113 if (error = copyin(osa, &bsd_sa, sizeof(struct sigaction)))
114 return error;
115 linux_sa.sa_handler = bsd_sa.sa_handler;
116 linux_sa.sa_restorer = NULL;
117 linux_sa.sa_mask = bsd_to_linux_sigmask(bsd_sa.sa_mask);
118 linux_sa.sa_flags = 0;
119 if (bsd_sa.sa_flags & SA_NOCLDSTOP)
120 linux_sa.sa_flags |= LINUX_SA_NOCLDSTOP;
121 if (bsd_sa.sa_flags & SA_ONSTACK)
122 linux_sa.sa_flags |= LINUX_SA_ONSTACK;
123 if (bsd_sa.sa_flags & SA_RESTART)
124 linux_sa.sa_flags |= LINUX_SA_RESTART;
125 if (error = copyout(&linux_sa, args->osa, sizeof(linux_sigaction_t)))
126 return error;
127 }
128 return 0;
129}
130
131struct linux_sigprocmask_args {
132 int how;
133 linux_sigset_t *mask;
134 linux_sigset_t *omask;
135};
136
137int
138linux_sigprocmask(struct proc *p, struct linux_sigprocmask_args *args,
139 int *retval)
140{
141 int error, s;
142 sigset_t mask;
143 sigset_t omask;
144
145#ifdef DEBUG
146 printf("Linux-emul(%d): sigprocmask(%d, *, *)\n", p->p_pid, args->how);
147#endif
148 if (args->omask != NULL) {
149 omask = bsd_to_linux_sigmask(p->p_sigmask);
150 if (error = copyout(&omask, args->omask, sizeof(sigset_t)))
151 return error;
152 }
153 if (!(args->mask))
154 return 0;
155 if (error = copyin(args->mask, &mask, sizeof(linux_sigset_t)))
156 return error;
157
158 mask = linux_to_bsd_sigmask(mask);
159 s = splhigh();
160 switch (args->how) {
161 case LINUX_SIG_BLOCK:
162 p->p_sigmask |= (mask & ~DONTMASK);
163 break;
164 case LINUX_SIG_UNBLOCK:
165 p->p_sigmask &= ~mask;
166 break;
167 case LINUX_SIG_SETMASK:
168 p->p_sigmask = (mask & ~DONTMASK);
169 break;
170 default:
171 error = EINVAL;
172 break;
173 }
174 splx(s);
175 return error;
176}
177
178int
179linux_siggetmask(struct proc *p, void *args, int *retval)
180{
181#ifdef DEBUG
182 printf("Linux-emul(%d): siggetmask()\n", p->p_pid);
183#endif
184 *retval = bsd_to_linux_sigmask(p->p_sigmask);
185 return 0;
186}
187
188struct linux_sigsetmask_args {
189 linux_sigset_t mask;
190};
191
192int
193linux_sigsetmask(struct proc *p, struct linux_sigsetmask_args *args,int *retval)
194{
195 int s;
196
197#ifdef DEBUG
198 printf("Linux-emul(%d): sigsetmask(%08x)\n", p->p_pid, args->mask);
199#endif
200 s = splhigh();
201 p->p_sigmask = (linux_to_bsd_sigmask(args->mask) & ~DONTMASK);
202 splx(s);
203 *retval = bsd_to_linux_sigmask(p->p_sigmask);
204 return 0;
205}
206
207struct linux_sigpending_args {
208 linux_sigset_t *mask;
209};
210
211int
212linux_sigpending(struct proc *p, struct linux_sigpending_args *args,int *retval)
213{
214 linux_sigset_t linux_sig;
215
216#ifdef DEBUG
217 printf("Linux-emul(%d): sigpending(*)\n", p->p_pid);
218#endif
219 linux_sig = bsd_to_linux_sigmask(p->p_siglist & p->p_sigmask);
220 return copyout(&linux_sig, args->mask, sizeof(linux_sig));
221}
222
223struct linux_sigsuspend_args {
224 linux_sigset_t mask;
225};
226
227int
228linux_sigsuspend(struct proc *p, struct linux_sigsuspend_args *args,int *retval)
229{
230 sigset_t tmp;
231
232#ifdef DEBUG
233 printf("Linux-emul(%d): sigsuspend(%08x)\n", p->p_pid, args->mask);
234#endif
235 tmp = linux_to_bsd_sigmask(args->mask);
236 return sigsuspend(p, &tmp , retval);
237}
238
239struct linux_kill_args {
240 int pid;
241 int signum;
242};
243
244int
245linux_kill(struct proc *p, struct linux_kill_args *args, int *retval)
246{
247 struct {
248 int pid;
249 int signum;
250 } tmp;
251
252#ifdef DEBUG
253 printf("Linux-emul(%d): kill(%d, %d)\n",
254 p->p_pid, args->pid, args->signum);
255#endif
256 tmp.pid = args->pid;
257 tmp.signum = linux_to_bsd_signal[args->signum];
258 return kill(p, &tmp, retval);
259}
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