1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
/*
* Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2004-2006 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <syslog.h>
#include <getopt.h>
#include "udev.h"
#include "udev_rules.h"
static int import_uevent_var(const char *devpath)
{
char path[PATH_SIZE];
static char value[4096]; /* must stay, used with putenv */
ssize_t size;
int fd;
char *key;
char *next;
int rc = -1;
/* read uevent file */
strlcpy(path, sysfs_path, sizeof(path));
strlcat(path, devpath, sizeof(path));
strlcat(path, "/uevent", sizeof(path));
fd = open(path, O_RDONLY);
if (fd < 0)
goto out;
size = read(fd, value, sizeof(value));
close(fd);
if (size < 0)
goto out;
value[size] = '\0';
/* import keys into environment */
key = value;
while (key[0] != '\0') {
next = strchr(key, '\n');
if (next == NULL)
goto out;
next[0] = '\0';
info("import into environment: '%s'\n", key);
putenv(key);
key = &next[1];
}
rc = 0;
out:
return rc;
}
int udevtest(int argc, char *argv[], char *envp[])
{
int force = 0;
const char *action = "add";
const char *subsystem = NULL;
const char *devpath = NULL;
struct udevice *udev;
struct sysfs_device *dev;
struct udev_rules rules = {};
int retval;
int rc = 0;
static const struct option options[] = {
{ "action", 1, NULL, 'a' },
{ "subsystem", 1, NULL, 's' },
{ "force", 0, NULL, 'f' },
{ "help", 0, NULL, 'h' },
{}
};
info("version %s\n", UDEV_VERSION);
udev_config_init();
if (udev_log_priority < LOG_INFO) {
char priority[32];
udev_log_priority = LOG_INFO;
sprintf(priority, "%i", udev_log_priority);
setenv("UDEV_LOG", priority, 1);
}
while (1) {
int option;
option = getopt_long(argc, argv, "a:s:fh", options, NULL);
if (option == -1)
break;
dbg("option '%c'\n", option);
switch (option) {
case 'a':
action = optarg;
break;
case 's':
subsystem = optarg;
break;
case 'f':
force = 1;
break;
case 'h':
printf("Usage: udevadm test OPTIONS <devpath>\n"
" --action=<string> set action string\n"
" --subsystem=<string> set subsystem string\n"
" --force don't skip node/link creation\n"
" --help print this help text\n\n");
exit(0);
default:
exit(1);
}
}
devpath = argv[optind];
if (devpath == NULL) {
fprintf(stderr, "devpath parameter missing\n");
rc = 1;
goto exit;
}
printf("This program is for debugging only, it does not run any program,\n"
"specified by a RUN key. It may show incorrect results, because\n"
"some values may be different, or not available at a simulation run.\n"
"\n");
sysfs_init();
udev_rules_init(&rules, 0);
/* remove /sys if given */
if (strncmp(devpath, sysfs_path, strlen(sysfs_path)) == 0)
devpath = &devpath[strlen(sysfs_path)];
dev = sysfs_device_get(devpath);
if (dev == NULL) {
fprintf(stderr, "unable to open device '%s'\n", devpath);
rc = 2;
goto exit;
}
udev = udev_device_init(NULL);
if (udev == NULL) {
fprintf(stderr, "error initializing device\n");
rc = 3;
goto exit;
}
if (subsystem != NULL)
strlcpy(dev->subsystem, subsystem, sizeof(dev->subsystem));
/* override built-in sysfs device */
udev->dev = dev;
strlcpy(udev->action, action, sizeof(udev->action));
udev->devt = udev_device_get_devt(udev);
/* simulate node creation with test flag */
if (!force)
udev->test_run = 1;
setenv("DEVPATH", udev->dev->devpath, 1);
setenv("SUBSYSTEM", udev->dev->subsystem, 1);
setenv("ACTION", udev->action, 1);
import_uevent_var(udev->dev->devpath);
info("looking at device '%s' from subsystem '%s'\n", udev->dev->devpath, udev->dev->subsystem);
retval = udev_device_event(&rules, udev);
if (udev->event_timeout >= 0)
info("custom event timeout: %i\n", udev->event_timeout);
if (retval == 0 && !udev->ignore_device && udev_run) {
struct name_entry *name_loop;
list_for_each_entry(name_loop, &udev->run_list, node) {
char program[PATH_SIZE];
strlcpy(program, name_loop->name, sizeof(program));
udev_rules_apply_format(udev, program, sizeof(program));
info("run: '%s'\n", program);
}
}
udev_device_cleanup(udev);
exit:
udev_rules_cleanup(&rules);
sysfs_cleanup();
return rc;
}
|
