11 #include <sys/socket.h>
12 #include <sys/types.h>
16 #include <talloc/talloc.h>
17 #include <waiter/waiter.h>
18 #include <system/system.h>
22 #include "pb-discover.h"
23 #include "device-handler.h"
26 #define DBG(fmt, args...) pb_log("DBG: " fmt, ## args)
27 #define DBGS(fmt, args...) \
28 pb_log("DBG:%s:%d: " fmt, __func__, __LINE__, ## args)
30 #define DBG(fmt, args...)
31 #define DBGS(fmt, args...)
36 struct udev_monitor *monitor;
37 struct device_handler *handler;
40 static int udev_destructor(void *p)
42 struct pb_udev *udev = p;
44 udev_monitor_unref(udev->monitor);
47 udev_unref(udev->udev);
53 static void udev_setup_event_params(struct udev_device *dev,
56 struct udev_list_entry *list, *entry;
58 list = udev_device_get_properties_list_entry(dev);
62 udev_list_entry_foreach(entry, list)
63 event_set_param(event,udev_list_entry_get_name(entry),
64 udev_list_entry_get_value(entry));
67 static int udev_handle_dev_action(struct udev_device *dev, const char *action)
74 enum event_action eva = 0;
79 devtype = udev_device_get_devtype(dev); /* DEVTYPE */
82 pb_log("udev_device_get_devtype failed\n");
86 devpath = udev_device_get_devpath(dev); /* DEVPATH */
89 pb_log("udev_device_get_devpath failed\n");
93 devnode = udev_device_get_devnode(dev); /* DEVNAME */
96 pb_log("udev_device_get_devnode failed\n");
100 /* Ignore non disk or partition, ram, loop. */
102 if (!(strstr(devtype, "disk") || strstr(devtype, "partition"))
103 || strstr(devpath, "virtual/block/loop")
104 || strstr(devpath, "virtual/block/ram")) {
105 pb_log("SKIP: %s - %s\n", devtype, devnode);
109 if (!strcmp(action, "add")) {
110 pb_log("ADD: %s - %s\n", devtype, devnode);
111 eva = EVENT_ACTION_ADD;
112 } else if (!strcmp(action, "remove")) {
113 pb_log("REMOVE: %s - %s\n", devtype, devnode);
114 eva = EVENT_ACTION_REMOVE;
116 pb_log("SKIP: %s: %s - %s\n", action, devtype, devnode);
120 event = talloc(NULL, struct event);
122 event->type = EVENT_TYPE_UDEV;
124 event->device = devnode;
127 event->params = NULL;
128 event_set_param(event, "DEVNAME", devnode);
130 udev_setup_event_params(dev, event);
132 udev = udev_get_userdata(udev_device_get_udev(dev));
135 device_handler_event(udev->handler, event);
141 static int udev_enumerate(struct udev *udev)
144 struct udev_list_entry *list, *entry;
145 struct udev_enumerate *enumerate;
147 enumerate = udev_enumerate_new(udev);
150 pb_log("udev_enumerate_new failed\n");
154 result = udev_enumerate_add_match_subsystem(enumerate, "block");
157 pb_log("udev_enumerate_add_match_subsystem failed\n");
161 udev_enumerate_scan_devices(enumerate);
163 list = udev_enumerate_get_list_entry(enumerate);
166 pb_log("udev_enumerate_get_list_entry failed\n");
170 udev_list_entry_foreach(entry, list) {
172 struct udev_device *dev;
174 syspath = udev_list_entry_get_name(entry);
175 dev = udev_device_new_from_syspath(udev, syspath);
177 udev_handle_dev_action(dev, "add");
179 udev_device_unref(dev);
182 udev_enumerate_unref(enumerate);
186 udev_enumerate_unref(enumerate);
190 static int udev_setup_monitor(struct udev *udev, struct udev_monitor **monitor)
193 struct udev_monitor *m;
196 m = udev_monitor_new_from_netlink(udev, "udev");
199 pb_log("udev_monitor_new_from_netlink failed\n");
203 result = udev_monitor_filter_add_match_subsystem_devtype(m, "block",
207 pb_log("udev_monitor_filter_add_match_subsystem_devtype failed\n");
211 result = udev_monitor_enable_receiving(m);
214 pb_log("udev_monitor_enable_receiving failed\n");
222 udev_monitor_unref(m);
227 * udev_process - waiter callback for monitor netlink.
230 static int udev_process(void *arg)
232 struct udev_monitor *monitor = arg;
233 struct udev_device *dev;
237 dev = udev_monitor_receive_device(monitor);
240 pb_log("udev_monitor_receive_device failed\n");
244 action = udev_device_get_action(dev);
247 pb_log("udev_device_get_action failed\n");
251 result = udev_handle_dev_action(dev, action);
253 udev_device_unref(dev);
257 udev_device_unref(dev);
261 static void udev_log_fn(struct udev __attribute__((unused)) *udev,
262 int __attribute__((unused)) priority, const char *file, int line,
263 const char *fn, const char *format, va_list args)
265 pb_log("libudev: %s %s:%d: ", fn, file, line);
266 vfprintf(pb_log_get_stream(), format, args);
269 struct pb_udev *udev_init(struct waitset *waitset,
270 struct device_handler *handler)
273 struct pb_udev *udev = talloc(NULL, struct pb_udev);
275 talloc_set_destructor(udev, udev_destructor);
276 udev->handler = handler;
278 udev->udev = udev_new();
281 pb_log("udev_new failed\n");
285 udev_set_userdata(udev->udev, udev);
287 udev_set_log_fn(udev->udev, udev_log_fn);
289 result = udev_enumerate(udev->udev);
294 result = udev_setup_monitor(udev->udev, &udev->monitor);
299 waiter_register_io(waitset, udev_monitor_get_fd(udev->monitor), WAIT_IN,
300 udev_process, udev->monitor);
302 pb_log("%s: waiting on udev\n", __func__);
308 udev_unref(udev->udev);
314 void udev_destroy(struct pb_udev *udev)