1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 1997-2003 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/isa_defs.h>
28
29 #include <stdlib.h>
30 #include <unistd.h>
31 #include <signal.h>
32 #include <memory.h>
33 #include <errno.h>
34
35 #include "P32ton.h"
36 #include "libproc.h"
37
38 /*
39 * sigaction() system call -- executed by subject process.
40 */
41 int
pr_sigaction(struct ps_prochandle * Pr,int sig,const struct sigaction * act,struct sigaction * oact)42 pr_sigaction(struct ps_prochandle *Pr,
43 int sig, const struct sigaction *act, struct sigaction *oact)
44 {
45 sysret_t rval; /* return value from sigaction() */
46 argdes_t argd[3]; /* arg descriptors for sigaction() */
47 argdes_t *adp;
48 int error;
49 #ifdef _LP64
50 struct sigaction32 act32;
51 struct sigaction32 oact32;
52 #endif /* _LP64 */
53
54 if (Pr == NULL) /* no subject process */
55 return (sigaction(sig, act, oact));
56
57 adp = &argd[0]; /* sig argument */
58 adp->arg_value = sig;
59 adp->arg_object = NULL;
60 adp->arg_type = AT_BYVAL;
61 adp->arg_inout = AI_INPUT;
62 adp->arg_size = 0;
63
64 adp++; /* act argument */
65 adp->arg_value = 0;
66 if (act == NULL) {
67 adp->arg_type = AT_BYVAL;
68 adp->arg_inout = AI_INPUT;
69 adp->arg_object = NULL;
70 adp->arg_size = 0;
71 } else {
72 adp->arg_type = AT_BYREF;
73 adp->arg_inout = AI_INPUT;
74 #ifdef _LP64
75 if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) {
76 sigaction_n_to_32(act, &act32);
77 adp->arg_object = &act32;
78 adp->arg_size = sizeof (act32);
79 } else {
80 adp->arg_object = (void *)act;
81 adp->arg_size = sizeof (*act);
82 }
83 #else /* _LP64 */
84 adp->arg_object = (void *)act;
85 adp->arg_size = sizeof (*act);
86 #endif /* _LP64 */
87 }
88
89 adp++; /* oact argument */
90 adp->arg_value = 0;
91 if (oact == NULL) {
92 adp->arg_type = AT_BYVAL;
93 adp->arg_inout = AI_INPUT;
94 adp->arg_object = NULL;
95 adp->arg_size = 0;
96 } else {
97 adp->arg_type = AT_BYREF;
98 adp->arg_inout = AI_OUTPUT;
99 #ifdef _LP64
100 if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) {
101 adp->arg_object = &oact32;
102 adp->arg_size = sizeof (oact32);
103 } else {
104 adp->arg_object = oact;
105 adp->arg_size = sizeof (*oact);
106 }
107 #else /* _LP64 */
108 adp->arg_object = oact;
109 adp->arg_size = sizeof (*oact);
110 #endif /* _LP64 */
111 }
112
113 error = Psyscall(Pr, &rval, SYS_sigaction, 3, &argd[0]);
114
115 if (error) {
116 errno = (error > 0)? error : ENOSYS;
117 return (-1);
118 }
119 #ifdef _LP64
120 if (oact != NULL && Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
121 sigaction_32_to_n(&oact32, oact);
122 #endif /* _LP64 */
123 return (rval.sys_rval1);
124 }
125