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33a5cc29 KS |
1 | /* |
2 | * test-libudev | |
3 | * | |
4 | * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "config.h" | |
21 | ||
22 | #include <stdio.h> | |
23 | #include <stdarg.h> | |
ba6929f6 KS |
24 | #include <unistd.h> |
25 | #include <errno.h> | |
26 | #include <string.h> | |
27 | #include <sys/select.h> | |
28 | ||
33a5cc29 KS |
29 | #include "libudev.h" |
30 | ||
31 | static void log_fn(struct udev *udev, | |
32 | int priority, const char *file, int line, const char *fn, | |
33 | const char *format, va_list args) | |
34 | { | |
35 | printf("test-libudev: %s %s:%d ", fn, file, line); | |
36 | vprintf(format, args); | |
37 | } | |
38 | ||
ba6929f6 | 39 | static int print_devlinks_cb(struct udev_device *udev_device, const char *value, void *data) |
33a5cc29 | 40 | { |
ba6929f6 KS |
41 | printf("link: '%s'\n", value); |
42 | return 0; | |
43 | } | |
44 | ||
45 | static int print_properties_cb(struct udev_device *udev_device, const char *key, const char *value, void *data) | |
46 | { | |
47 | printf("property: '%s=%s'\n", key, value); | |
48 | return 0; | |
49 | } | |
50 | ||
51 | static void print_device(struct udev_device *device) | |
52 | { | |
53 | const char *str; | |
54 | int count; | |
55 | ||
56 | printf("*** device: %p ***\n", device); | |
57 | str = udev_device_get_devpath(device); | |
58 | printf("devpath: '%s'\n", str); | |
59 | str = udev_device_get_subsystem(device); | |
60 | printf("subsystem: '%s'\n", str); | |
61 | str = udev_device_get_devname(device); | |
62 | printf("devname: '%s'\n", str); | |
63 | count = udev_device_get_devlinks(device, print_devlinks_cb, NULL); | |
64 | printf("found %i links\n", count); | |
65 | count = udev_device_get_properties(device, print_properties_cb, NULL); | |
66 | printf("found %i properties\n", count); | |
67 | printf("\n"); | |
68 | } | |
69 | ||
70 | static int test_device(struct udev *udev, const char *devpath) | |
71 | { | |
72 | struct udev_device *device; | |
73 | ||
74 | printf("looking at device: %s\n", devpath); | |
75 | device = udev_device_new_from_devpath(udev, devpath); | |
76 | if (device == NULL) { | |
77 | printf("no device\n"); | |
78 | return -1; | |
79 | } | |
80 | print_device(device); | |
81 | udev_device_unref(device); | |
33a5cc29 KS |
82 | return 0; |
83 | } | |
84 | ||
85 | static int devices_enum_cb(struct udev *udev, | |
86 | const char *devpath, const char *subsystem, const char *name, | |
87 | void *data) | |
88 | { | |
ba6929f6 | 89 | printf("device: '%s' (%s) '%s'\n", devpath, subsystem, name); |
33a5cc29 KS |
90 | return 0; |
91 | } | |
92 | ||
ba6929f6 | 93 | static int test_enumerate(struct udev *udev, const char *subsystem) |
33a5cc29 | 94 | { |
ba6929f6 KS |
95 | int count; |
96 | ||
97 | count = udev_devices_enumerate(udev, subsystem, devices_enum_cb, NULL); | |
98 | printf("found %i devices\n\n", count); | |
99 | return count; | |
100 | } | |
101 | ||
102 | static int test_monitor(struct udev *udev, const char *socket_path) | |
103 | { | |
104 | struct udev_monitor *udev_monitor; | |
105 | fd_set readfds; | |
106 | int fd; | |
107 | ||
108 | udev_monitor = udev_monitor_new_from_socket(udev, socket_path); | |
109 | if (udev_monitor == NULL) { | |
110 | printf("no socket\n"); | |
111 | return -1; | |
112 | } | |
113 | ||
114 | fd = udev_monitor_get_fd(udev_monitor); | |
115 | FD_ZERO(&readfds); | |
116 | ||
117 | while (1) { | |
118 | struct udev_device *device; | |
119 | int fdcount; | |
120 | ||
121 | FD_SET(STDIN_FILENO, &readfds); | |
122 | FD_SET(fd, &readfds); | |
123 | ||
124 | printf("waiting for events on %s, press ENTER to exit\n", socket_path); | |
125 | fdcount = select(fd+1, &readfds, NULL, NULL, NULL); | |
126 | printf("select fd count: %i\n", fdcount); | |
127 | ||
128 | if (FD_ISSET(fd, &readfds)) { | |
129 | device = udev_monitor_get_device(udev_monitor); | |
130 | if (device == NULL) { | |
131 | printf("no device from socket\n"); | |
132 | continue; | |
133 | } | |
134 | print_device(device); | |
135 | udev_device_unref(device); | |
136 | } | |
137 | ||
138 | if (FD_ISSET(STDIN_FILENO, &readfds)) { | |
139 | printf("exiting loop\n"); | |
140 | break; | |
141 | } | |
142 | } | |
143 | ||
144 | udev_monitor_unref(udev_monitor); | |
33a5cc29 KS |
145 | return 0; |
146 | } | |
147 | ||
148 | int main(int argc, char *argv[], char *envp[]) | |
149 | { | |
150 | struct udev *udev; | |
33a5cc29 KS |
151 | const char *devpath = "/devices/virtual/mem/null"; |
152 | const char *subsystem = NULL; | |
ba6929f6 KS |
153 | const char *socket = "@/org/kernel/udev/monitor"; |
154 | const char *str; | |
33a5cc29 KS |
155 | |
156 | if (argv[1] != NULL) { | |
157 | devpath = argv[1]; | |
158 | if (argv[2] != NULL) | |
159 | subsystem = argv[2]; | |
ba6929f6 KS |
160 | if (argv[3] != NULL) |
161 | socket = argv[3]; | |
33a5cc29 KS |
162 | } |
163 | ||
164 | udev = udev_new(); | |
165 | printf("context: %p\n", udev); | |
166 | if (udev == NULL) { | |
167 | printf("no context\n"); | |
168 | return 1; | |
169 | } | |
170 | udev_set_log_fn(udev, log_fn); | |
171 | printf("set log: %p\n", log_fn); | |
172 | ||
173 | str = udev_get_sys_path(udev); | |
ba6929f6 | 174 | printf("sys_path: '%s'\n", str); |
33a5cc29 | 175 | str = udev_get_dev_path(udev); |
ba6929f6 | 176 | printf("dev_path: '%s'\n", str); |
33a5cc29 | 177 | |
ba6929f6 KS |
178 | test_device(udev, devpath); |
179 | test_enumerate(udev, subsystem); | |
180 | test_monitor(udev, socket); | |
33a5cc29 KS |
181 | |
182 | udev_unref(udev); | |
183 | return 0; | |
184 | } |