1 /* $OpenBSD: hpux_sig2.c,v 1.1 2004/09/19 21:56:18 mickey Exp $ */
2
3 /*
4 * Copyright (c) 2004 Michael Shalayeff
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/proc.h>
33 #include <sys/mount.h>
34 #include <sys/signalvar.h>
35 #include <sys/syscallargs.h>
36
37 #include <compat/hpux/hpux.h>
38 #include <compat/hpux/hpux_sig.h>
39 #include <compat/hpux/hpux_util.h>
40 #include <compat/hpux/hppa/hpux_syscallargs.h>
41
42 int
43 hpux_sys_sigaltstack(struct proc *p, void *v, register_t *retval)
44 {
45 struct hpux_sys_sigaltstack_args /* {
46 syscallarg(struct hpux_sigaltstack *) nss;
47 syscallarg(struct hpux_sigaltstack *) oss;
48 } */ *uap = v;
49 struct sys_sigaltstack_args saa;
50 hpux_stack_t hsa;
51 stack_t *psa, sa;
52 caddr_t sg;
53 int error;
54
55 if ((error = copyin(SCARG(uap, nss), &hsa, sizeof hsa)))
56 return (error);
57
58 sa.ss_sp = hsa.ss_sp;
59 sa.ss_size = hsa.ss_size;
60 sa.ss_flags = hsa.ss_flags & SS_ONSTACK;
61 if (hsa.ss_flags & HPUX_SS_DISABLE)
62 sa.ss_flags |= SS_DISABLE;
63
64 sg = stackgap_init(p->p_emul);
65 psa = stackgap_alloc(&sg, 2 * sizeof(struct sigaltstack));
66 SCARG(&saa, nss) = &psa[0];
67 SCARG(&saa, oss) = &psa[1];
68
69 if ((error = copyout(&sa, psa, sizeof sa)))
70 return (error);
71
72 if ((error = sys_sigaltstack(p, &saa, retval)))
73 return (error);
74
75 if ((error = copyin(SCARG(&saa, oss), &sa, sizeof sa)))
76 return (error);
77
78 hsa.ss_sp = sa.ss_sp;
79 hsa.ss_flags = sa.ss_flags & SS_ONSTACK;
80 if (sa.ss_flags & SS_DISABLE)
81 hsa.ss_flags |= HPUX_SS_DISABLE;
82 hsa.ss_size = sa.ss_size;
83
84 return (copyout(&hsa, SCARG(uap, oss), sizeof hsa));
85 }