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
|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* Copyright (C) 2009 Red Hat, Inc.
*/
#include <glib.h>
#include <gudev/gudev.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <signal.h>
static GMainLoop *loop = NULL;
static void
signal_handler (int signo)
{
if (signo == SIGINT || signo == SIGTERM) {
g_message ("Caught signal %d, shutting down...", signo);
g_main_loop_quit (loop);
}
}
static void
setup_signals (void)
{
struct sigaction action;
sigset_t mask;
sigemptyset (&mask);
action.sa_handler = signal_handler;
action.sa_mask = mask;
action.sa_flags = 0;
sigaction (SIGTERM, &action, NULL);
sigaction (SIGINT, &action, NULL);
}
static void println (guint indent, const char *fmt, ...) __attribute__((__format__ (__printf__, 2, 3)));
static void
println (guint indent, const char *fmt, ...)
{
va_list args;
GString *output;
guint i;
g_return_if_fail (fmt != NULL);
output = g_string_sized_new (250);
for (i = 0; i < indent; i++)
g_string_append_c (output, ' ');
va_start (args, fmt);
g_string_append_vprintf (output, fmt, args);
va_end (args);
g_print ("%s\n", output->str);
g_string_free (output, TRUE);
}
static void
dump_device_and_parent (GUdevDevice *device, guint indent)
{
const char **list, **iter;
GUdevDevice *parent;
char propstr[500];
guint32 namelen = 0, i;
println (indent, "------------------------------------------------------");
println (indent, "Name: %s", g_udev_device_get_name (device));
println (indent, "Type: %s", g_udev_device_get_devtype (device));
println (indent, "Subsys: %s", g_udev_device_get_subsystem (device));
println (indent, "Number: %s", g_udev_device_get_number (device));
println (indent, "Path: %s", g_udev_device_get_sysfs_path (device));
println (indent, "Driver: %s", g_udev_device_get_driver (device));
println (indent, "Action: %s", g_udev_device_get_action (device));
println (indent, "Seq Num: %" G_GUINT64_FORMAT, g_udev_device_get_seqnum (device));
println (indent, "Dev File: %s", g_udev_device_get_device_file (device));
println (indent, "-----------");
println (indent, "Properties:");
/* Get longest property name length for alignment */
list = (const char **) g_udev_device_get_property_keys (device);
for (iter = list; iter && *iter; iter++) {
if (strlen (*iter) > namelen)
namelen = strlen (*iter);
}
namelen++;
for (iter = list; iter && *iter; iter++) {
strcpy (propstr, *iter);
strcat (propstr, ":");
for (i = 0; i < namelen - strlen (*iter); i++)
strcat (propstr, " ");
strcat (propstr, g_udev_device_get_property (device, *iter));
println (indent + 2, "%s", propstr);
}
parent = g_udev_device_get_parent (device);
if (parent) {
dump_device_and_parent (parent, indent + 4);
g_object_unref (parent);
}
}
static void
handle_uevent (GUdevClient *client,
const char *action,
GUdevDevice *device,
gpointer user_data)
{
const char *expected_subsys = user_data;
const char *subsys;
g_return_if_fail (client != NULL);
g_return_if_fail (action != NULL);
g_return_if_fail (device != NULL);
/* A bit paranoid */
subsys = g_udev_device_get_subsystem (device);
g_return_if_fail (subsys != NULL);
g_return_if_fail (!strcmp (subsys, expected_subsys));
g_print ("---- (EVENT: %s) ----\n", action);
dump_device_and_parent (device, 0);
g_print ("\n");
}
int
main (int argc, char *argv[])
{
GUdevClient *client;
const char *subsys[2] = { NULL, NULL };
GList *list, *iter;
if (argc != 2) {
g_warning ("Usage: %s [subsystem]", argv[0]);
return 1;
}
loop = g_main_loop_new (NULL, FALSE);
setup_signals ();
subsys[0] = argv[1];
client = g_udev_client_new (subsys);
g_signal_connect (client, "uevent", G_CALLBACK (handle_uevent), (gpointer) subsys[0]);
list = g_udev_client_query_by_subsystem (client, subsys[0]);
for (iter = list; iter; iter = g_list_next (iter)) {
dump_device_and_parent (G_UDEV_DEVICE (iter->data), 0);
g_print ("\n");
g_object_unref (G_UDEV_DEVICE (iter->data));
}
g_main_loop_run (loop);
return 0;
}
|
