Documentation/TODO

   1
   2  Note that items with (!) have high priority.
   3
   4 cal
   5 ---
   6    - add option to print calendar in vertical way
   7      https://github.com/karelzak/util-linux/issues/604
   8    - support another --reforms, see for example freebsd version
   9      https://github.com/freebsd/freebsd/blob/master/usr.bin/ncal/ncal.c#L72
  10
  11 choom
  12 -----
  13    - add new tool to set/get process OOM setting
  14      https://github.com/karelzak/util-linux/issues/609
  15
  16 column
  17 ------
  18    - add option to NOT ignore empty lines
  19      https://github.com/karelzak/util-linux/issues/593
  20
  21 script
  22 ------
  23    - (!) add terminal type ($TERM), columns and lines to the header line, something like:
  24
  25                 Script started on 2018-03-05 13:02:08+0100 [term="xterm-256color", lines=53, columns=190]
  26
  27      see https://github.com/karelzak/util-linux/issues/583
  28
  29    - think about optional "event" records in timing file to save information
  30      about non-data changes like signals (SIGWINCH, SIGSTOP, SIGCONT, etc.)
  31      in format:
  32
  33              <time> 0 <name>[: var=data, ...]
  34
  35      for example:
  36
  37              0.001296 256
  38              0.001297   0 SIGWINCH: columns=50, lines=20
  39              0.000010 275
  40
  41 lsblk
  42 -----
  43    - rewrite lsblk to read all devices tree to memory to make it more extendable. Now
  44      it always keep in memory just one device (only final output is buffered by
  45      libsmartcols, but this stuff are output strings, nothing else).
  46
  47      See fopr example: https://github.com/karelzak/util-linux/issues/616
  48
  49
  50 cleanup lib/path.c: [Karel Zak for v2.33]
  51 ------------------
  52    - always return rc from all functions
  53    - introduce control struct and use openat() from top-level path
  54      (e.g. top-level is /proc, etc)
  55    - use lib/path.c as low-level API for lib/sysfs.c
  56    - now we duplicate code in functions like {path,sysfs}_read_u32, etc.
  57    - it would be also nice to have a way how to redirect sysfs.c functions
  58      to /sys snapshots (e.g. lsblk regression tests)
  59
  60
  61 lscpu
  62 -----
  63   - read cpuid and uname information from file if --sysroot is specified, then
  64     we can prepare regression tests completely independent on hw and architecture.
  65
  66 lsblk
  67 -----
  68   - currently it does not show mountpoint for all devices in btrfs RAID. It's because
  69     /proc/#/mountinfo contains reference to the one device only. Maybe we can add some
  70     btrfs specific code to provide a better output for FS based stacks. Not sure.
  71     https://bugzilla.redhat.com/show_bug.cgi?id=1084453
  72
  73 nsenter(1)
  74 ----------
  75  - read the default UID and GID from the target process.
  76    http://thread.gmane.org/gmane.linux.utilities.util-linux-ng/9553/focus=9585
  77
  78 hwlock
  79 ------
  80  - use /var/lib/hwclock/drift to store hw-clock drift numbers.
  81  - use /etc/adjtime as read-only for UTC/LOCAL information only
  82  - the /var/lib/hwclock/drift should be implemented backwardly compatible,
  83    it means use the file only if exists, otherwise follow /etc/adjtime
  84
  85 bash completion
  86 ---------------
  87 - Optional argument handling requires user to press backspace to get
  88   argument completion.
  89 - Comma separated value, e.g., --output 'value1,value2', are not
  90   completed for users.
  91
  92 libmount (mount/umount)
  93 -----------------------
  94
  95  - remount all filesystems given their type, for example:
  96         mount -a -t tmpfs -o remount
  97    It should be probably enough to add remount_all() to mount(8) in way we
  98    already have mount_all().  https://github.com/karelzak/util-linux/issues/589
  99
 100  - add --onlyonce to force mount(8) to check if mountpoint is already used. Now
 101    "already mounted" detection is used for --all only. The problem is if you
 102    call "mount <mountpoint>" more than once for in fstab defined tmpfs (or network
 103    filesystem etc.). In this case kernel does not return EBUSY, but a new instance
 104    of the FS is created. https://github.com/karelzak/util-linux/issues/448
 105    (... just idea, maybe wrong idea)
 106
 107  - support CAP_SYS_ADMIN; for mount(2) syscall the CAP_SYS_ADMIN is good
 108    enough. Unfortunately, mount(8) does more things like check for filesystem
 109    type (but it's usually done by udev, so root perms are unnecessary), create
 110    loop devices, write to /run/mount/utab or /etc/mtab, etc.
 111
 112    It would be nice to improve libmount to check for CAP_SYS_ADMIN if suid not
 113    set and allow to use it for simple tasks where no another operation is
 114    necessary.
 115
 116  - allow to execute mount(2) in another namespace, something like:
 117         mount --namespace=/proc/$n/ns/mnt  /dev/sda2 /bar
 118    see https://bugzilla.redhat.com/show_bug.cgi?id=1199554 for more details.
 119
 120  - add options to control fstab/mtab mount options usage, something like:
 121
 122    --options-mode={ignore,append,prepend,replace}      MNT_OMODE_{IGNORE, ...}
 123    --options-source={fstab,mtab,disable}               MNT_OMODE_{FSTAB,MTAB,NOTAB}
 124    --options-source-force                              MNT_OMODE_FORCE
 125
 126    (all this already supported by libmount)
 127
 128
 129 partx
 130 -----
 131
 132  - support mapping by device-mapper if argv[0] is "kpartx" or --dm option is used.
 133
 134
 135 docs
 136 ----
 137
 138  - (!) use something better than gtk-doc for libmount and libblkid (doxyden?)
 139
 140  - (!) add API documentation to libuuid
 141
 142 exit codes
 143 ----------
 144
 145   - we need coreutils-like exit codes for failed exec(). See:
 146     https://www.spinics.net/lists/util-linux-ng/msg12776.html
 147     and original attempt:
 148     https://github.com/karelzak/util-linux/pull/311
 149
 150 login-utils:
 151 -----------
 152
 153   - consolidate newgrp(1)
 154     * we have "su --group/--supp-group" to switch between groups, newgrp(1) in
 155       util-linux and shadow-utils (and sg(1) alias in shadow-utils)
 156     * the unique functionality provided by newgpr(1) is support for group
 157       passwords [/etc/gshadow] -- do we really need this functionality?
 158     * maybe we can mark group-passwords as deprecated, and replace sg(1) and
 159       newgpr(1) with su(1) code. The another way is to ask for group password in
 160       su --group too.
 161     * note that shadow-utils newgpr(1) provides support for syslog and audit log.
 162
 163
 164 libblkid
 165 --------
 166
 167  - (!) add support for BitLocker Drive Encryption
 168    https://github.com/karelzak/util-linux/issues/617
 169    https://github.com/libyal/libbde/blob/master/documentation/BitLocker%20Drive%20Encryption%20(BDE)%20format.asciidoc
 170
 171  - (!) add support for dasd PT (used for example on s390)
 172
 173 libfdisk
 174 --------
 175
 176  - add support for Apple Partition Map (see libblkid/src/partitions/mac.c)
 177    http://en.wikipedia.org/wiki/Apple_Partition_Map
 178
 179 misc
 180 ----
 181
 182  - add mllockall() and SCHED_FIFO to hwclock,
 183    see http://lkml.org/lkml/2008/10/12/132
 184
 185
 186 ---------------
 187 exotic requests
 188 ---------------
 189
 190  - add SELinux security contexts support to the 'ipcs' utility
 191    http://bugzilla.redhat.com/show_bug.cgi?id=225342
 192
 193    Would be great to list the current system IPC Objects with their respective
 194    security labels (where allowed) with something like 'ipcs -Z' - following the
 195    way other tools reports those.
 196
 197