On Monday 10 July 2017 13:52:36 Karel Zak wrote: > On Mon, Jul 10, 2017 at 01:15:09PM +0200, Pali Rohár wrote: > > On Monday 10 July 2017 13:08:28 Karel Zak wrote: > > > On Wed, Jul 05, 2017 at 01:49:26PM +0200, Pali Rohár wrote: > > > > Hi! What is the meaning of the ID_FS_VERSION attribute? I'm > > > > trying to find documentation about libblkid attributes, but > > > > seems there is none. > > > > > > libblkid/src/superblocks/superblocks.c > > > > > > * @VERSION: filesystem version > > > : > > > :-) > > > > That does not provide more information :-) > > > > > Well, the field is to provide more details about the filesystem, > > > for example we have VERSION="FAT16" TYPE="vfat", and so on. Note > > > that TYPE is usually name used by kernel (to be usable for > > > "mount -t <type>"). > > > > > > I guess the VERSION is used by some userspace stuff (udisks?) to > > > get more information (or provide more details to end-users). > > > It's probably nothing critical. > > > > I'm thinking if we can provide UDF revision/version of UDF > > filesystem to userspace and looks like ID_FS_VERSION is good > > candidate for it... > > > > What do you think? > > It seems blkid_probe_set_version() is nowhere used for UD now, so we > have absolute freedom to use it in some way. > > > E.g. Linux kernel is able to read UDF filesystem up to revision > > 2.50 and has read-write support up to revision 2.01. So for > > userspace this information can be useful. > > Yes, sounds good. > > Karel https://github.com/karelzak/util-linux/pull/483 -- Pali Rohár pali.rohar@xxxxxxxxx
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