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Diffstat (limited to 'Documentation/TODO')
| -rw-r--r-- | Documentation/TODO | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/Documentation/TODO b/Documentation/TODO new file mode 100644 index 0000000..a646127 --- /dev/null +++ b/Documentation/TODO @@ -0,0 +1,239 @@ + + Note that items with (!) have high priority. + +lscpu +----- + - detect more hypervisors, see 'virt-what' shell script + http://people.redhat.com/~rjones/virt-what/ + +losetup +------- + - add new option --list and --output <columns> to print details about + one or all (-a) devices by lib/tt.c output. For example people hate + the hex devno in the default output. + +dmesg +----- + + - add --color to colorize err and panic messages + +hwclock +------- + + - (!!!) add "hwclock -c|--compare" to provide info about RTC frequency offset + like "adjtimex -c", shell version: + + #!/bin/bash + date > /dev/null + hwdate=$(hwclock -r) + time1_sys=$(date +'%s.%N') + time1_hw=$(date -d "${hwdate% -*}" +'%s') + + while sleep 10; do + hwdate=$(hwclock -r) + time2_sys=$(date +'%s.%N') + time2_hw=$(date -d "${hwdate% -*}" +'%s') + awk "END { x = (($time1_hw - $time1_sys) - ($time2_hw - $time2_sys)) / + ($time2_hw - $time1_hw); printf \"sysclock/RTC frequency offset: %.0f ppm (%.0f + ticks)\n\", x * 1e6, x * 1e4}" < /dev/null + done + +minix (fsck, mkfs) +------------------ + + - clean up types -- use ino_t, size_t and ssize_t + +libmount (mount/umount) +----------------------- + + Note that the old mount/[u]mount.c code is in MAINTENANCE MODE only. All new + features should be implemented to libmount or to the new sys-utils/{mount,umount}.c + utils. + + - 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) + + - add x-mount-mkdir mount option to libmount to allow "mkdir /mountpoint" + + - support MS_PROPAGATION flags in fstab -- note that kernel assumes that + these flags are not mixed with another mount flags, it means that: + + /dev/sda1 /mnt/foo auto ro,shared + + has be implemented by two syscalls: + + mount("/dev/sda1", "/mnt/foo", "ext4", MS_RDONLY, NULL); + mount(NULL, "/mnt/foo", "none", MS_REMOUNT|MS_SHARED, NULL); + + yeah, there is race ;-( + + - (!) on systems with regular mtab file it is impossible to umount by "umount + /dev/loop0" if the loop device has been created by "mount -o loop", because + there is backing file in the mtab (instead of the device name). + + Now we have all necessary information in /sysfs so it should be possible to + translate the device name to backing file and then search in mtab for the + filename. See loopdev_get_loopfile(). + + - add ---target-prefix option to specify prefix for mountpoints + so then you can + + mount --fstab=/etc/fstab.sandbox -a --target-prefix=/mnt/sandbox + + to create a new hierarchy of filesystems at sandbox + + - umount by label: + # mount LABEL=mylabel + # umount LABEL=mylabel + + +libblkd and libmount +-------------------- + + - use __attribute__((notnull)) and __attribute__((warn_unused_result)) + Note that the code has to be useful for non-gcc compilers too. + +partx +----- + + - support mapping by device-mapper if argv[0] is "kpartx" or --dm option is used. + + - (!) add regression tests for partx, addpart and delpart + + +docs +---- + + - (!) use something better than gtk-doc for libmount and libblkid (doxyden?) + + - (!) add API documentation to libuuid + + +lib/tt.c +-------- + + - allows to sort columns, for example sort lsblk(8) output by SIZE + +login-utils: +----------- + + - (!) merge newgrp from shadow-utils + +libblkid +-------- + + - improve DBG() debug macro, see new imeplemntation in libmount/src/mountP.h + + - (!) 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) + +fdisk(s) +-------- + + - add to "First sector" dialog a line with information about available + gaps (free areas) to make it more user friendly if you want to skip + any useless (small) areas between existing partitions. + See https://bugzilla.redhat.com/show_bug.cgi?id=715114 + + - add "move end" command to move end of the last primary/extended partition. + This feature seems very attractive to users who resizing their disks + (for example in virtual machines). + + - sfdisk rounds to cylinders is -uM (megabyte units) is specified, this is + pretty stupid feature. It has to round to sectors if -uS or -uM is specified. + + - Sun label support is completely useless for large disks, it uses number of + cylinders from on-disk-label where the geometry is stored by int16 values. + It seems better to completely ignore this stuff from the label and always + use geometry + BLKGETSIZE64 from kernel. + + - use off_t instead "long long" + + - catch SIGINT (Ctrl-C) and return to main menu. + From Red Hat bugzilla #545488: + + While using fdisk normally, if you accidentally pressed the wrong button (to + start a sequence of questions for some operation, e.g. 'c' to create + partition). The tool tries too hard to keep asking you for valid input. You + can't provide a blank or invalid input to get it to break out of the current + dialog sequence and get back to the main menu. + + - fdisk/* refactoring (probably implement libfdisk ???) + + - add GPT support (probably implement libfdisk ???) + +misc +---- + + - switch_root: + - move all mountpoints to the newroot (there are hardcoded /proc /sys and /dev paths now) + - add --dont-move[=<list of dirs>] options + + - use TZ=UTC + + - add mllockall() and SCHED_FIFO to hwclock, + see http://lkml.org/lkml/2008/10/12/132 + + - (!) rewrite ipcs to use /proc/sys/kernel rather than unreliable syscalls + (there are problems with 32bit userspace on 64bit kernel) + + +--------------- +exotic requests +--------------- + + - mount -a -- reorder fstab entries by paths before mount (just idea only) + + - mount -a (just idea only) + + Date: Sun, 3 Jun 2007 18:04:24 +0300 (MET DST) + From: Szabolcs Szakacsits <szaka@sienet.hu> + + In the past the right record order could be figured out easily by just + checking out fstab (if one knew what to look for) but considering the + fastly increasing number of user space file systems and their usage, with + their path, library, etc dependencies, it's getting trickier and is a black + magic for most users because they simply expect drives to be mounted + independently of their order in fstab. + + One typical, wrongly edited fstab example is: + + /dev/hda2 / ext3 defaults 1 1 + /dev/hda1 /mnt/windows ntfs-3g defaults 0 0 + /dev/hda3 /usr ext3 defaults 0 0 + + The events: + + mount -> /sbin/mount.ntfs-3g -> + -> resolves to <path1>/ntfs-3g via a symlink -> + -> ntfs-3g requires at least <path2>/libfuse* + + There are many potential solutions. For example installing everything on + the root file system which may be needed for successful mount. But this + is not always feasible or practical since we could end up putting almost + everything on the root file system in the end. + + Another idea is an improved mount strategy: + + do { + try to mount all unmounted entries + } while (not all mounted && at least one new was successfully mounted) + + + - 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. + + |