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udev: increase event buffer size, handle -ENOBUFS, handle filtered-out devices

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This commit is contained in:
Kay Sievers 2010-11-26 04:51:30 +01:00
parent 3d84d050bd
commit 99448c1f01
1 changed files with 15 additions and 2 deletions
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17
src/device.c
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@ -468,6 +468,9 @@ static int device_enumerate(Manager *m) {
goto fail;
}
if (udev_monitor_set_receive_buffer_size(m->udev_monitor, 128*1024*1024) < 0)
log_error("Failed to set udev event buffer size.");
if (udev_monitor_filter_add_match_tag(m->udev_monitor, "systemd") < 0) {
r = -ENOMEM;
goto fail;
@ -524,10 +527,20 @@ void device_fd_event(Manager *m, int events) {
const char *action;
assert(m);
assert(events == EPOLLIN);
if (events != EPOLLIN) {
static RATELIMIT_DEFINE(limit, 10*USEC_PER_SEC, 5);
if (!ratelimit_test(&limit))
log_error("Failed to get udev event: %m");
return;
}
if (!(dev = udev_monitor_receive_device(m->udev_monitor))) {
log_error("Failed to receive device.");
/*
* libudev might filter-out devices which pass the bloom filter,
* so getting NULL here is not neccessarily an error
*/
return;
}