Hi,
I am new to util-linux and working on adding some intelligence into
mkswap to be
aware of the underlying device properties.
I want to understand how to discover a sysfs property of a disk, when
mkswap is actually
invoked with a partition id of that disk.
If a new probe is invoked with these calls set, and mkswap is invoked
on the "whole disk" /dev/sdb
blkdid_probe pr = new_prober(fd);
blkid_probe_enable_superblocks(pr, 1);
blkid_probe_enable_partitions(pr, 1);
blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_MAGIC);
blkid_probe_enable_topology(pr, 1);
I am able to get to the property value (which is set from the sysfs
value for the disk).
But when mkswap is invokded with /dev/sdbX, then sysfs_probe is not
able to discover the parent disk's sysfs property.
Obviously it's easy to do string manipulation and invoke the probe for
the whole disk
in the latter case, I am assuming there is a library interface that'll
do the trick.
Any help would be great.
Thanks,
Venkat.
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