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config: Use NotifyFd interface for udev 

This uses the NotifyFd interface to monitor the udev file descriptor
rather than adding another block/wakeup handler

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2015-11-11 22:02:07 -08:00 committed by Adam Jackson
parent bf920b2390
commit 8c8f3567fe
1 changed files with 16 additions and 29 deletions
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45
config/udev.c
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@ -332,41 +332,30 @@ device_removed(struct udev_device *device)
}
static void
wakeup_handler(void *data, int err, void *read_mask)
socket_handler(int fd, int ready, void *data)
{
int udev_fd = udev_monitor_get_fd(udev_monitor);
struct udev_device *udev_device;
const char *action;
if (err < 0)
udev_device = udev_monitor_receive_device(udev_monitor);
if (!udev_device)
return;
if (FD_ISSET(udev_fd, (fd_set *) read_mask)) {
udev_device = udev_monitor_receive_device(udev_monitor);
if (!udev_device)
return;
action = udev_device_get_action(udev_device);
if (action) {
if (!strcmp(action, "add")) {
action = udev_device_get_action(udev_device);
if (action) {
if (!strcmp(action, "add")) {
device_removed(udev_device);
device_added(udev_device);
} else if (!strcmp(action, "change")) {
/* ignore change for the drm devices */
if (strcmp(udev_device_get_subsystem(udev_device), "drm")) {
device_removed(udev_device);
device_added(udev_device);
} else if (!strcmp(action, "change")) {
/* ignore change for the drm devices */
if (strcmp(udev_device_get_subsystem(udev_device), "drm")) {
device_removed(udev_device);
device_added(udev_device);
}
}
else if (!strcmp(action, "remove"))
device_removed(udev_device);
}
udev_device_unref(udev_device);
else if (!strcmp(action, "remove"))
device_removed(udev_device);
}
}
static void
block_handler(void *data, struct timeval **tv, void *read_mask)
{
udev_device_unref(udev_device);
}
int
@ -441,8 +430,7 @@ config_udev_init(void)
}
udev_enumerate_unref(enumerate);
RegisterBlockAndWakeupHandlers(block_handler, wakeup_handler, NULL);
AddGeneralSocket(udev_monitor_get_fd(udev_monitor));
SetNotifyFd(udev_monitor_get_fd(udev_monitor), socket_handler, X_NOTIFY_READ, NULL);
return 1;
}
@ -457,8 +445,7 @@ config_udev_fini(void)
udev = udev_monitor_get_udev(udev_monitor);
RemoveGeneralSocket(udev_monitor_get_fd(udev_monitor));
RemoveBlockAndWakeupHandlers(block_handler, wakeup_handler, NULL);
RemoveNotifyFd(udev_monitor_get_fd(udev_monitor));
udev_monitor_unref(udev_monitor);
udev_monitor = NULL;
udev_unref(udev);