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 (c) 1997-2000 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 #include <stdlib.h>
28 #include <unistd.h>
29 #include <errno.h>
30 #include <sys/types.h>
31 #include "libproc.h"
32
33 /*
34 * ioctl() system call -- executed by subject process.
35 */
36 int
pr_ioctl(struct ps_prochandle * Pr,int fd,int code,void * buf,size_t size)37 pr_ioctl(struct ps_prochandle *Pr, int fd, int code, void *buf, size_t size)
38 {
39 sysret_t rval; /* return value from ioctl() */
40 argdes_t argd[3]; /* arg descriptors for ioctl() */
41 argdes_t *adp = &argd[0]; /* first argument */
42 int error;
43
44 if (Pr == NULL) /* no subject process */
45 return (ioctl(fd, code, buf));
46
47 adp->arg_value = fd;
48 adp->arg_object = NULL;
49 adp->arg_type = AT_BYVAL;
50 adp->arg_inout = AI_INPUT;
51 adp->arg_size = 0;
52 adp++; /* move to code argument */
53
54 adp->arg_value = code;
55 adp->arg_object = NULL;
56 adp->arg_type = AT_BYVAL;
57 adp->arg_inout = AI_INPUT;
58 adp->arg_size = 0;
59 adp++; /* move to buffer argument */
60
61 if (size == 0) {
62 adp->arg_value = (long)buf;
63 adp->arg_object = NULL;
64 adp->arg_type = AT_BYVAL;
65 adp->arg_inout = AI_INPUT;
66 adp->arg_size = 0;
67 } else {
68 adp->arg_value = 0;
69 adp->arg_object = buf;
70 adp->arg_type = AT_BYREF;
71 adp->arg_inout = AI_INOUT;
72 adp->arg_size = size;
73 }
74
75 error = Psyscall(Pr, &rval, SYS_ioctl, 3, &argd[0]);
76
77 if (error) {
78 errno = (error > 0)? error : ENOSYS;
79 return (-1);
80 }
81 return (rval.sys_rval1);
82 }
83