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 #include <stdio.h>
21 #include <stdlib.h>
22 #include <unistd.h>
23 #include <string.h>
24 #include <ctype.h>
25 #include <errno.h>
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <fcntl.h>
29 #include <sys/ioctl.h>
30 #include <linux/kd.h>
31 #include <linux/errno.h>
32
33 #include "includeTest.h"
34
35 int open_block_device(void);
36
37 int block_dev_handle = 0; /* handle to INC test block device */
38
main(int argc,char ** argv)39 int main(int argc, char **argv)
40 {
41
42 incdev_cmd_t cmd = { 0, 0 };
43 int rc;
44
45 rc = open_block_device();
46
47 if (!rc) {
48
49 block_dev_handle = open(DEVICE_NAME, O_RDWR);
50
51 if (block_dev_handle < 0) {
52 printf
53 ("ERROR: Open of device %s failed %d errno = %d\n",
54 DEVICE_NAME, block_dev_handle, errno);
55 } else {
56 rc = ioctl(block_dev_handle, INCDEV_CMD, &cmd);
57
58 printf("return from ioctl %d \n", rc);
59 }
60
61 } else {
62 printf("ERROR: Create/open block device failed\n");
63 }
64
65 return 0;
66
67 printf("Block Include Test complete.\n");
68 }
69
open_block_device()70 int open_block_device()
71 {
72 dev_t devt;
73 struct stat statbuf;
74 int rc;
75
76 if (block_dev_handle == 0) {
77
78 /* check for the /dev/ subdir, and create if it does not exist.
79 *
80 * If devfs is running and mounted on /dev, these checks will all pass,
81 * so a new node will not be created.
82 */
83
84 devt = makedev(INCLUDEMAJOR, 0);
85
86 rc = stat(INCLUDE_DEVICE_PATH, &statbuf);
87
88 if (rc) {
89 if (errno == ENOENT) {
90 /* dev node does not exist. */
91 rc = mkdir(INCLUDE_DEVICE_PATH,
92 (S_IFDIR | S_IRWXU | S_IRGRP |
93 S_IXGRP | S_IROTH | S_IXOTH));
94
95 } else {
96 printf("ERROR: Problem with INC dev directory. Error code from stat(
97 ) is %d\n\n", errno);
98 }
99 } else {
100 if (!(statbuf.st_mode & S_IFDIR)) {
101 rc = unlink(INCLUDE_DEVICE_PATH);
102 if (!rc) {
103 rc = mkdir(INCLUDE_DEVICE_PATH,
104 (S_IFDIR | S_IRWXU | S_IRGRP
105 | S_IXGRP | S_IROTH |
106 S_IXOTH));
107 }
108 }
109 }
110
111 /*
112 * Check for the block_device node, and create if it does not
113 * exist.
114 */
115
116 rc = stat(DEVICE_NAME, &statbuf);
117 if (rc) {
118 if (errno == ENOENT) {
119 /* dev node does not exist */
120 rc = mknod(DEVICE_NAME,
121 (S_IFBLK | S_IRUSR | S_IWUSR |
122 S_IRGRP | S_IWGRP), devt);
123 } else {
124 printf
125 ("ERROR:Problem with block device node directory. Error code form stat() is %d\n\n",
126 errno);
127 }
128
129 } else {
130 /*
131 * Device exists. Check to make sure it is for a
132 * block device and that it has the right major and minor.
133 */
134
135 if ((!(statbuf.st_mode & S_IFBLK)) ||
136 (statbuf.st_rdev != devt)) {
137 /* Recreate the dev node. */
138 rc = unlink(DEVICE_NAME);
139 if (!rc) {
140 rc = mknod(DEVICE_NAME,
141 (S_IFBLK | S_IRUSR | S_IWUSR
142 | S_IRGRP | S_IWGRP), devt);
143 }
144 }
145 }
146
147 }
148 return rc;
149 }
150