1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19
20 * This file will include user space functions that will drive
21 * the kernel module to test various functions and kernel
22 * calls. Each function will need to setup the tif structure
23 * so that the in parameters and out parameters are correctly
24 * initialized
25 *
26 * use tif structure for passing params between user
27 * space and kernel space, in some tests it is really not
28 * needed, and if nothing is needed to pass in utilize
29 * the ki_generic function below. the tif structure makes
30 * it easy to maintain all the tests if they have the same
31 * process in kernel space to read in params in the kernel
32 * module no matter what the test is
33 *
34 * author: Sean Ruyle
35 * date: 06/11/2003
36 *
37 * tmod_ki.c
38 */
39
40 #include <stdlib.h>
41 #include <stdio.h>
42 #include <sys/ioctl.h>
43 #include "../kernel_space/tmod.h"
44
ki_generic(int fd,int flag)45 int ki_generic(int fd, int flag)
46 {
47 int rc;
48 tmod_interface_t tif;
49
50 /*
51 * build interface structure
52 */
53 tif.in_len = 0;
54 tif.in_data = 0;
55 tif.out_len = 0;
56 tif.out_data = 0;
57 tif.out_rc = 0;
58
59 /*
60 * ioctl call for flag
61 */
62 rc = ioctl(fd, flag, &tif);
63 if (rc) {
64 printf("Ioctl error\n");
65 return rc;
66 }
67 if (tif.out_rc) {
68 printf("Specific errorr: ");
69 return tif.out_rc;
70 }
71
72 return rc;
73 }
74
75 #if 0
76 An example of using in_data to pass in a structure:ki_write_t wif;
77 tmod_interface_t tif;
78
79 //fill out wif structure
80
81 /*
82 * build interface structure
83 */
84 tif.in_len = sizeof(ki_write_t);
85 tif.in_data = (caddr_t) & wif;
86 tif.out_len = 0;
87 tif.out_data = 0;
88 tif.out_rc = 0;
89
90 //make ioctl call
91
92 An example of using out_data to get back a structure:ki_read_t rif;
93 tmod_interface_t tif;
94
95 //fill out rif structure
96 rif.len = p_test->data[0];
97 rif.handle = open_handle;
98 rif.data = (caddr_t) p_test->data[1];
99
100 /*
101 * build interface structure
102 */
103 tif.in_len = sizeof(ki_read_t);
104 tif.in_data = (caddr_t) & rif;
105 tif.out_len = 0;
106 tif.out_data = 0;
107 tif.out_rc = 0;
108
109 //make ioctl call
110
111 #endif
112