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Non-dm devices have ID_PART_TABLE_TYPE variable exported in udev db from blkid scan for *both* whole devices and partitions. We used ID_PART_ENTRY_DISK in addition to decide whether this is the whole device or partition and then we filtered out only whole devices where the partition table really is. However, ID_PART_ENTRY_DISK was added in blkid 2.20 so we need to use a different set of variables to decide on whole devices and partitions on systems where older blkid is still used. Now, we use ID_PART_TABLE_TYPE to detect that there's something related to partitioning with this device and we use DEVTYPE variable instead to decide between whole device (DEVTYPE="disk") and partition (DEVTYPE="partition"). For dm devices it's simpler, we have ID_PART_TABLE_TYPE variable\ set in udev db for whole devices. It's not set for partitions, hence we don't need more variable in addition to make the decision on whole device vs. partition (dm devices do not have regular partitions, hence DEVTYPE can't be used anyway, it's always set to "disk" for whole disks and partitions). |
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| .. | ||
| dev-cache.c | ||
| dev-cache.h | ||
| dev-dasd.c | ||
| dev-ext-udev-constants.h | ||
| dev-ext.c | ||
| dev-io.c | ||
| dev-luks.c | ||
| dev-md.c | ||
| dev-swap.c | ||
| dev-type.c | ||
| dev-type.h | ||
| device-types.h | ||
| device.h | ||