Documentation/TODO

   1
   2 See also:
   3         https://github.com/util-linux/util-linux/issues?q=is%3Aissue+is%3Aopen+label%3ATODO
   4
   5 all
   6 ---
   7
   8  - use gettext() for column names on output in libsmartcols based tools and
   9    accept trantated as well as original names on command line (lsblk -o NAME,SIZE).
  10    https://github.com/util-linux/util-linux/issues/1291
  11
  12 tests
  13 -----
  14   - add MacOS to GitHub Actions (.github/workflows/cibuild.yml). Note, we have used
  15     Mac in Travis-CI (see .travis.yml).
  16
  17   - add Coverity to GitHub Actions (see for example .github/workflows/coverity.yml
  18     in systemd repo).
  19
  20 agetty
  21 ------
  22    - follow LOGIN_PLAIN_PROMPT from /etc/login.defs as alternative to --nohostname
  23
  24 fstrim
  25 ------
  26   - "fstrim --fstab" uses root= from /proc/cmdline to get root FS when it's missing
  27     in fstab file. This is fragile (due to missing root= or the root FS is not
  28     accessible). The best seems to parse mountinfo and use mnt_table_get_root_fs()
  29     as a fallback solution.  https://github.com/util-linux/util-linux/issues/1266.
  30
  31 script (lib/pty-session.c)
  32 --------------------------
  33   - (!) add #ifdefs and optional code for non-signalfd() systems
  34
  35 docs
  36 ----
  37   - use terminal hyperlinks (for example for --help)
  38     try on terminal: printf 'For more details see \e]8;;man:fdisk(8)\e\\fdisk(8)\e]8;;\e\\.\n'
  39     https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
  40
  41 rev
  42 ---
  43   - support huge input lines (for example read input by small fixed buffer
  44     rather than try allocate all buffer for a whole line)
  45     see: https://github.com/util-linux/util-linux/issues/972
  46
  47 col
  48 ---
  49   - use unsigned sizes for columns and lines
  50   - check for limits to avoid segfaults
  51   - make it more robust
  52   https://github.com/util-linux/util-linux/issues/749
  53
  54 cal
  55 ---
  56    - support another --reforms, see for example freebsd version
  57      https://github.com/freebsd/freebsd/blob/master/usr.bin/ncal/ncal.c#L72
  58
  59 lscpu
  60 -----
  61   - add "Boost/Turbo: true|false" based on /sys/devices/system/cpu/intel_pstate/no_turbo and
  62     /sys/devices/system/cpu/cpufreq/boost
  63
  64   - add --freq output to visualise CPU use, see https://github.com/util-linux/util-linux/issues/1314
  65
  66   - read cpuid and uname information from file if --sysroot is specified, then
  67     we can prepare regression tests completely independent on hw and architecture.
  68
  69 hwclock
  70 ------
  71  - use /var/lib/hwclock/drift to store hw-clock drift numbers.
  72  - use /etc/adjtime as read-only for UTC/LOCAL information only
  73  - the /var/lib/hwclock/drift should be implemented backwardly compatible,
  74    it means use the file only if exists, otherwise follow /etc/adjtime
  75  - see topic/hwclock-drift-file branch
  76
  77 bash completion
  78 ---------------
  79 - Optional argument handling requires user to press backspace to get
  80   argument completion.
  81 - Comma separated value, e.g., --output 'value1,value2', are not
  82   completed for users.
  83
  84 libmount (mount/umount)
  85 -----------------------
  86
  87  - mnt_context_get_excode() does not return error messages from /sbin/[u]mount.<type>
  88    external helpers. It is disadvantages in same cases (non-terminal programs).
  89    The solution is to use pipe(), keep output from helper in memory and return it later
  90    by mnt_context_get_excode() (or mnt_context_get_helper_output(), etc.). This feature
  91    should be optional and disabled by default.
  92    see: https://github.com/util-linux/util-linux/issues/1208
  93
  94  - add --onlyonce to force mount(8) to check if mountpoint is already used. Now
  95    "already mounted" detection is used for --all only. The problem is if you
  96    call "mount <mountpoint>" more than once for in fstab defined tmpfs (or network
  97    filesystem etc.). In this case kernel does not return EBUSY, but a new instance
  98    of the FS is created. https://github.com/util-linux/util-linux/issues/448
  99    (... just idea, maybe wrong idea)
 100
 101  - Extend mount(8) command line for mount flags modification without remount:
 102    "mount modify --clear noexec --set nodev,private,ro /mnt"
 103    This functionality should be implemented by mount_setattr() syscall.
 104
 105 partx
 106 -----
 107
 108  - support mapping by device-mapper if argv[0] is "kpartx" or --dm option is used.
 109
 110
 111 getopt
 112 ------
 113   It would be great if getopt could optionally ignore unknown options.
 114   Currently, it outputs -- for every option it doesn't recognize but leaving the
 115   option as it is could beneficial wrapper scripts which could then pass the
 116   options they don't recognize as they are to the command they are wrapping.
 117   https://github.com/util-linux/util-linux/issues/701
 118
 119 docs
 120 ----
 121
 122  - (!) use something better than gtk-doc for libmount and libblkid (doxygen?)
 123
 124  - (!) add API documentation to libuuid
 125
 126  - Improve line breaks in man pages and review markup
 127
 128
 129 login-utils:
 130 -----------
 131
 132   - consolidate newgrp(1)
 133     * we have "su --group/--supp-group" to switch between groups, newgrp(1) in
 134       util-linux and shadow-utils (and sg(1) alias in shadow-utils)
 135     * the unique functionality provided by newgpr(1) is support for group
 136       passwords [/etc/gshadow] -- do we really need this functionality?
 137     * maybe we can mark group-passwords as deprecated, and replace sg(1) and
 138       newgpr(1) with su(1) code. The another way is to ask for group password in
 139       su --group too.
 140     * note that shadow-utils newgpr(1) provides support for syslog and audit log.
 141
 142
 143 libsmartcols / column -t
 144 ------------------------
 145   - add column --table-header-color
 146   - add support for border of table
 147     * extend 'struct libscols_symbols', use box-drawing chars UTF8/ASCII
 148     * add scols_table_enable_border()
 149
 150
 151 column(1):
 152   - add "--output-width unlimited" and no call cols_table_set_termwidth() and
 153     cols_table_set_termforce() in this case. See https://github.com/util-linux/util-linux/issues/1618
 154
 155
 156 libblkid
 157 --------
 158
 159  - extend ZFS proper to scan for more uberblocks if BLKID_SUBLKS_MAGIC flag is set.
 160    This solution will make wipefs(8) more usable as ZFS is extremely variable with
 161    additional root blocks locations. See  https://github.com/util-linux/util-linux/issues/1228
 162
 163  - (!) add support for BitLocker Drive Encryption
 164    https://github.com/util-linux/util-linux/issues/617
 165    https://github.com/libyal/libbde/blob/master/documentation/BitLocker%20Drive%20Encryption%20(BDE)%20format.asciidoc
 166
 167  - (!) add support for dasd PT (used for example on s390)
 168
 169 libfdisk
 170 --------
 171
 172  - add support for Apple Partition Map (see libblkid/src/partitions/mac.c)
 173    http://en.wikipedia.org/wiki/Apple_Partition_Map
 174
 175  - add support for nested PT (e.g. hybrid MBR) to scripts
 176    * add "nested-label:" block to sfdisk --dump
 177    * add "nested-partitiontable" to sfdisk --JSON
 178    * support nested labels parsing from dump
 179    see https://github.com/util-linux/util-linux/issues/850
 180
 181 misc
 182 ----
 183
 184  - add mllockall() and SCHED_FIFO to hwclock,
 185    see http://lkml.org/lkml/2008/10/12/132
 186
 187
 188 ---------------
 189 exotic requests
 190 ---------------
 191
 192  - add SELinux security contexts support to the 'ipcs' utility
 193    http://bugzilla.redhat.com/show_bug.cgi?id=225342
 194
 195    Would be great to list the current system IPC Objects with their respective
 196    security labels (where allowed) with something like 'ipcs -Z' - following the
 197    way other tools reports those.
 198
 199