I've merged the topic/blkid branch into the master branch (upcoming
util-linux-ng 2.15).
Note that the library and blkid binary are still "experimental",
although I don't expect any API changes.
Feedback and bug reports are welcomed...
Karel
New libblkid features:
---------------------
* backwardly compatible ABI and API with old libblkid from e2fsprogs
* low-level probing interface:
- blkid_probe_* functions
- /sbin/blkid -p <device>
* vol_id compatible output format (e.g. "ID_FS_LABEL_ENC=\x2fboot"):
- blkid -p -o udev <device>
* very high-level interface for LABELs/UUIDs evaluation:
- blkid_evaluate_spec()
- /sbin/blkid -L <label> | -U <uuid>
it's strongly recommended to use this interface in your applications
or scripts. The interface is configurable (by /etc/blkid.conf) and
works on 2.4, 2.6, udev or non-udev systems.
It's always better to use /sbin/blkid -L|-U than directly read
/dev/disk/by-{label,uuid} symlinks.
* /etc/blkid.conf config file, options are:
EVALUATE=<method>[,<method>] # methods are udev and scan;
# default: udev,scan
SEND_UEVENT=<yes|not> # send uevent when disk/by-*
# symlink is not valid; default: yes
CACHE_FILE=<path> # default: /etc/blkid.tab
* 24 FS/raid images for blkid regression tests
TODO
----
e2fsprogs:
- add --disable-blkid
- #ifdef BUILD_BLKID for findfs code in tune2fs.c
- freeze <major>.<minor> libblkid version numbers, the libblkid in
e2fsprogs should be open for bug fixes or new filesystems only.
udev:
- add --disable-volumeid
- test blkid within udev rules
- add command line interface for blkid_probe_filter_usage():
# blkid -p -o udev --filter-usage filesystems
# blkid -p -o udev --filter-usage noraid
and blkid_probe_filter_types():
# blkid -p -o udev --filter-type nofat
note that "--filter-usage" is necessary for compatibility with vol_id where
we in udev rules use things like "vol_id --skip-raid"
- use blkid_evaluate_spec() in mount, umount, swapon and fsck
- move fsck to util-linux-ng (we already have some old patches
from Christoph Hellwig and Matthias Koenig)
- documentation (probably generated from source code)
--
Karel Zak <kzak@xxxxxxxxxx>
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