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-rw-r--r--src/libudev/libudev-device-internal.h3
-rw-r--r--src/libudev/libudev-device.c12
2 files changed, 12 insertions, 3 deletions
diff --git a/src/libudev/libudev-device-internal.h b/src/libudev/libudev-device-internal.h
index 3f93fda545..aa36b8cb12 100644
--- a/src/libudev/libudev-device-internal.h
+++ b/src/libudev/libudev-device-internal.h
@@ -47,6 +47,9 @@ struct udev_device {
uint64_t tags_generation;
struct udev_list devlinks;
uint64_t devlinks_generation;
+ bool properties_read:1;
+ bool tags_read:1;
+ bool devlinks_read:1;
struct udev_list sysattrs;
bool sysattrs_read;
};
diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index a55cd258f4..893d72c19f 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -700,7 +700,8 @@ _public_ struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev
{
assert_return_errno(udev_device, NULL, EINVAL);
- if (device_get_devlinks_generation(udev_device->device) != udev_device->devlinks_generation) {
+ if (device_get_devlinks_generation(udev_device->device) != udev_device->devlinks_generation ||
+ !udev_device->devlinks_read) {
const char *devlink;
udev_list_cleanup(&udev_device->devlinks);
@@ -708,6 +709,7 @@ _public_ struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev
FOREACH_DEVICE_DEVLINK(udev_device->device, devlink)
udev_list_entry_add(&udev_device->devlinks, devlink, NULL);
+ udev_device->devlinks_read = true;
udev_device->devlinks_generation = device_get_devlinks_generation(udev_device->device);
}
@@ -730,7 +732,8 @@ _public_ struct udev_list_entry *udev_device_get_properties_list_entry(struct ud
{
assert_return_errno(udev_device, NULL, EINVAL);
- if (device_get_properties_generation(udev_device->device) != udev_device->properties_generation) {
+ if (device_get_properties_generation(udev_device->device) != udev_device->properties_generation ||
+ !udev_device->properties_read) {
const char *key, *value;
udev_list_cleanup(&udev_device->properties);
@@ -738,6 +741,7 @@ _public_ struct udev_list_entry *udev_device_get_properties_list_entry(struct ud
FOREACH_DEVICE_PROPERTY(udev_device->device, key, value)
udev_list_entry_add(&udev_device->properties, key, value);
+ udev_device->properties_read = true;
udev_device->properties_generation = device_get_properties_generation(udev_device->device);
}
@@ -918,7 +922,8 @@ _public_ struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_dev
{
assert_return_errno(udev_device, NULL, EINVAL);
- if (device_get_tags_generation(udev_device->device) != udev_device->tags_generation) {
+ if (device_get_tags_generation(udev_device->device) != udev_device->tags_generation ||
+ !udev_device->tags_read) {
const char *tag;
udev_list_cleanup(&udev_device->tags);
@@ -926,6 +931,7 @@ _public_ struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_dev
FOREACH_DEVICE_TAG(udev_device->device, tag)
udev_list_entry_add(&udev_device->tags, tag, NULL);
+ udev_device->tags_read = true;
udev_device->tags_generation = device_get_tags_generation(udev_device->device);
}