Note that items with (!) have high priority.
libsmartcols
------------
- (!) add libscols_column->json_type and scols_column_set_jsontype()
to generate proper JSON output. Now the library uses quotes (= all is
string) for everything. See for example SIZE in "lsblk --json --bytes"
output.
lsblk
-----
The problem is NVMe-multipath driver where in /sys/.../slaves/ are nodes
that should be probably hidden for userspace. Note that kernel developers
promised to fix this issue in kernel *** so hold off from that for now***
[Mar 1, 2018].
Anyway, possible userspace solution is:
- verify that slave/holder nodes points to the real block devices
(/sys/dev/block/<maj:min> for the node exists), otherwise silently ignore
the slave/holder node -- see set_cxt().
- the same verification we necessary for nodes in /sys/block/<name>. It means
verify result from sysfs_devname_to_devno() in set_cxt().
cleanup lib/path.c: [Karel Zak for v2.33]
------------------
- always return rc from all functions
- introduce control struct and use openat() from top-level path
(e.g. top-level is /proc, etc)
- use lib/path.c as low-level API for lib/sysfs.c
- now we duplicate code in functions like {path,sysfs}_read_u32, etc.
- it would be also nice to have a way how to redirect sysfs.c functions
to /sys snapshots (e.g. lsblk regression tests)
lscpu
-----
- read cpuid and uname information from file if --sysroot is specified, then
we can prepare regression tests completely independent on hw and architecture.
lsblk
-----
- currently it does not show mountpoint for all devices in btrfs RAID. It's because
/proc/#/mountinfo contains reference to the one device only. Maybe we can add some
btrfs specific code to provide a better output for FS based stacks. Not sure.
https://bugzilla.redhat.com/show_bug.cgi?id=1084453
agetty
-----
- support default issue (/etc/issue) output for agetty to make it agetty
usable on systems with empty /etc.
This change is little bit controversial, because now agetty prints nothing
by default and it's probably used by admins to hide information about the
system to unauthorized users. We already have --noissue to disable issue
output. The question is if admins use this option, "rm /etc/issue" is
probably easer than modify inittab (or systemd unit file).
Maybe we can implement it by --enable-agetty-default-issue compile option and
move the decision to downstream maintainers ;-)
nsenter(1)
----------
- read the default UID and GID from the target process.
http://thread.gmane.org/gmane.linux.utilities.util-linux-ng/9553/focus=9585
hwlock
------
- use /var/lib/hwclock/drift to store hw-clock drift numbers.
- use /etc/adjtime as read-only for UTC/LOCAL information only
- the /var/lib/hwclock/drift should be implemented backwardly compatible,
it means use the file only if exists, otherwise follow /etc/adjtime
bash completion
---------------
- Optional argument handling requires user to press backspace to get
argument completion.
- Comma separated value, e.g., --output 'value1,value2', are not
completed for users.
libmount (mount/umount)
-----------------------
- add --onlyonce to force mount(8) to check if mountpoint is already used. Now
"already mounted" detection is used for --all only. The problem is if you
call "mount <mountpoint>" more than once for in fstab defined tmpfs (or network
filesystem etc.). In this case kernel does not return EBUSY, but a new instance
of the FS is created. https://github.com/karelzak/util-linux/issues/448
- support CAP_SYS_ADMIN; for mount(2) syscall the CAP_SYS_ADMIN is good
enough. Unfortunately, mount(8) does more things like check for filesystem
type (but it's usually done by udev, so root perms are unnecessary), create
loop devices, write to /run/mount/utab or /etc/mtab, etc.
It would be nice to improve libmount to check for CAP_SYS_ADMIN if suid not
set and allow to use it for simple tasks where no another operation is
necessary.
- allow to execute mount(2) in another namespace, something like:
mount --namespace=/proc/$n/ns/mnt /dev/sda2 /bar
see https://bugzilla.redhat.com/show_bug.cgi?id=1199554 for more details.
- add options to control fstab/mtab mount options usage, something like:
--options-mode={ignore,append,prepend,replace} MNT_OMODE_{IGNORE, ...}
--options-source={fstab,mtab,disable} MNT_OMODE_{FSTAB,MTAB,NOTAB}
--options-source-force MNT_OMODE_FORCE
(all this already supported by libmount)
partx
-----
- support mapping by device-mapper if argv[0] is "kpartx" or --dm option is used.
docs
----
- (!) use something better than gtk-doc for libmount and libblkid (doxyden?)
- (!) add API documentation to libuuid
exit codes
----------
- we need coreutils-like exit codes for failed exec(). See:
https://www.spinics.net/lists/util-linux-ng/msg12776.html
and original attempt:
https://github.com/karelzak/util-linux/pull/311
login-utils:
-----------
- consolidate newgrp(1)
* we have "su --group/--supp-group" to switch between groups, newgrp(1) in
util-linux and shadow-utils (and sg(1) alias in shadow-utils)
* the unique functionality provided by newgpr(1) is support for group
passwords [/etc/gshadow] -- do we really need this functionality?
* maybe we can mark group-passwords as deprecated, and replace sg(1) and
newgpr(1) with su(1) code. The another way is to ask for group password in
su --group too.
* note that shadow-utils newgpr(1) provides support for syslog and audit log.
libblkid
--------
- (!) don't use internally blkid_loff_t, rather use off_t, size_t, ssize_t,
stdint.h types and so on...
- add FSSIZE value -- filesystem size (klibc requirement)
- (!) add support for dasd PT (used for example on s390)
libfdisk
--------
- add support for Apple Partition Map (see libblkid/src/partitions/mac.c)
http://en.wikipedia.org/wiki/Apple_Partition_Map
misc
----
- add mllockall() and SCHED_FIFO to hwclock,
see http://lkml.org/lkml/2008/10/12/132
---------------
exotic requests
---------------
- add SELinux security contexts support to the 'ipcs' utility
http://bugzilla.redhat.com/show_bug.cgi?id=225342
Would be great to list the current system IPC Objects with their respective
security labels (where allowed) with something like 'ipcs -Z' - following the
way other tools reports those.
