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Add nomatch filters when enumerating udev devices

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Filter out some subsystems we are not interested in.
This commit is contained in:
Ján Tomko 2016-06-02 18:09:56 +02:00
parent 207a50f7cd
commit 1fd8fc8fc1
1 changed files with 26 additions and 1 deletions
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27
src/node_device/node_device_udev.c
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@ -1165,13 +1165,38 @@ static int udevProcessDeviceListEntry(struct udev *udev,
} }
/* We do not care about every device (see udevGetDeviceType).
* Do not bother enumerating over subsystems that do not
* contain interesting devices.
*/
const char *subsystem_blacklist[] = {
"acpi", "tty", "vc", "i2c",
};
static int udevEnumerateAddMatches(struct udev_enumerate *udev_enumerate)
{
size_t i;
for (i = 0; i < ARRAY_CARDINALITY(subsystem_blacklist); i++) {
const char *s = subsystem_blacklist[i];
if (udev_enumerate_add_nomatch_subsystem(udev_enumerate, s) < 0) {
virReportSystemError(errno, "%s", _("failed to add susbsystem filter"));
return -1;
}
}
return 0;
}
static int udevEnumerateDevices(struct udev *udev) static int udevEnumerateDevices(struct udev *udev)
{ {
struct udev_enumerate *udev_enumerate = NULL; struct udev_enumerate *udev_enumerate = NULL;
struct udev_list_entry *list_entry = NULL; struct udev_list_entry *list_entry = NULL;
int ret = 0; int ret = -1;
udev_enumerate = udev_enumerate_new(udev); udev_enumerate = udev_enumerate_new(udev);
if (udevEnumerateAddMatches(udev_enumerate) < 0)
goto cleanup;
ret = udev_enumerate_scan_devices(udev_enumerate); ret = udev_enumerate_scan_devices(udev_enumerate);
if (ret != 0) { if (ret != 0) {