util-linux is a random collection of Linux utilities

Last update: May 17, 2022

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Overview

				  util-linux

		util-linux is a random collection of Linux utilities

     Note: for the years 2006-2010 this project was named "util-linux-ng".

COMPILE & INSTALL:

      See Documentation/howto-compilation.txt.

MAILING LIST:

      E-MAIL:  [email protected]
      URL:     http://vger.kernel.org/vger-lists.html#util-linux
      ARCHIVE: https://lore.kernel.org/util-linux/

      The mailing list will reject email messages that contain:
       - more than 100K characters
       - html
       - spam phrases/keywords
      See: http://vger.kernel.org/majordomo-info.html#taboo

IRC CHANNEL:

      #util-linux at freenode.net:

      irc://chat.freenode.net/util-linux

      The IRC channel and Mailing list are for developers and project
      maintainers. For end users it is recommended to utilize the
      distribution's support system.

BUG REPORTING:

      E-MAIL: [email protected]
      Web:    https://github.com/karelzak/util-linux/issues

      This project has no resources to provide support for distribution specific
      issues. For end users it is recommended to utilize the distribution's
      support system.

NLS (PO TRANSLATIONS):

      PO files are maintained by:
	  http://translationproject.org/domain/util-linux.html

VERSION SCHEMA:

      Standard releases:
	  .[.]
	     major = fatal and deep changes
	     minor = typical release with new features
	     maint = maintenance releases; bug fixes only

      Development releases:
	 .-rc

SOURCE CODE:

 Download archive:
	  https://www.kernel.org/pub/linux/utils/util-linux/

 See also:
     Documentation/howto-contribute.txt
     Documentation/howto-build-sys.txt
     Documentation/howto-pull-request.txt

 SCM (Source Code Management) Repository:

    Primary repository:
	  git clone git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git

    Backup repository:
	  git clone git://github.com/karelzak/util-linux.git

    Web interfaces:
	  http://git.kernel.org/cgit/utils/util-linux/util-linux.git
	  https://github.com/karelzak/util-linux

      Note: the GitHub repository may contain temporary development branches too.

      The kernel.org repository contains master (current development) and stable/*
      (maintenance) branches only. All master or stable/* changes are always pushed
      to both repositories at the same time.

    Repository Branches: 'git branch -a'
	  master branch
	   - current development
	   - the source for stable releases when deemed ready.
	   - day-to-day status is: 'it works for me'. This means that its
	     normal state is useful but not well tested.
	   - long-term development or invasive changes in active development are
	     forked into separate 'topic' branches from the tip of 'master'.

	  stable/ branches
	   - public releases
	   - branch name: stable/v..
	   - created from the 'master' branch after two or more release
	     candidates and the final public release. This means that the stable
	     releases are committed, tagged, and reachable in 'master'.
	   - these branches then become forked development branches. This means
	     that any changes made to them diverge from the 'master' branch.
	   - maintenance releases are part of, and belong to, their respective
	     stable branch. As such, they are tags(..) and
	     not branches of their own. They are not part of, visible in, or
	     have anything to do with the 'master' development branch. In git
	     terminology: maintenance releases are not reachable from 'master'.
	   - when initially cloned (as with the 'git clone' command given above)
	     these branches are created as 'remote tracking branches' and are
	     only visible by using the -a or -r options to 'git branch'. To
	     create a local branch use the desired tag with this command:
	     'git checkout -b v2.29.2 v2.29.2'

    Tags: 'git tag'
	   - a new tag object is created for every release.
	   - tag name: v.
	   - all tags are signed by the maintainer's PGP key.

    Known Bugs:
	- don't use tag v2.13.1 (created and published by mistake),
	  use v2.13.1-REAL instead.

WORKFLOW EXAMPLE:

 1) development (branch: )

 2) master release (tags: v2.29-rc1, v2.29-rc2, v2.29, branch: )

 3) development (work on v2.30, branch: )

 4) fork -- create a new branch  based on tag v2.29

     4a) new patches or cherry-pick patches from  (branch: )

     4b) stable release (tag: v2.29.1, branch: )

     4c) more patches; another release (tag: v2.29.2, branch: )

 5) master release v2.30 (branch: )
    ...

where 3) and 4) happen simultaneously.

Issues

CD cannot be mounted automatically (The cd was burned twice in Windows)
A CD (DVD+R), formatted as udf file system. Burn the disc under the windows system for the first time, and the disc can be mounted normally under linux.

Then burn the disc for the second time under windows (additional burn). At this time, the disc cannot be automatically mounted, and it can be used after manual mounting.

Note that by changing the version of libblkid1, it is found that this problem does not exist in versions prior to 2.31.1-0.5 (including this version).

You can test it through the Ubuntu system.

The following is the blkid command information of the CD (Disc burned twice in the windos system) in the linux system.

libblkid1_2.31.1-0.5： uos-PC:~$ blkid …… /dev/sr0: UUID="0930121120554446" LABEL="kelu2" TYPE="udf" /dev/sdb1: LABEL_FATBOOT="UKNOWN" LABEL="UKNOWN" TYPE="vfat" uos-PC:~$ blkid -o list device fs_type label mount point UUID …… /dev/sr0 udf kelu2 /media/uos/disk 0930121120554446 libblkid1_2.32-0.1： uos-PC:~$ blkid …… /dev/sr0: UUID="0930121120554446" LABEL="kelu2" TYPE="udf" [email protected]:~$ blkid -o list device fs_type label mount point UUID …… /dev/sr0 udf kelu2 (not mounted) 0930121120554446
opened by HeroesLoveToRoujiamo 81
RFC: lsfd, a brand new Linux specific replacement for lsof
As you noticed at https://github.com/lsof-org/lsof/issues/89, I have developed lsfd. lsfd is a command like lsof. The critical differences are (1) lsfd is specialized to Linux, and (2) lsfd is based on libsmartcols.

This pull request is for getting comments. Socket-related information is not extracted yet. The filtering feature that lsof is not implemented yet. Test cases are not available yet. The man page is not available yet. They are parts of future work.

A quirk in this pull request is about POSIX threads. I assumed using multiple threads may improve the performance of listing. After implementing and measuring the execution time, I found the performance is not so improved as I expected. So I deleted the code for multi-threading.

Anyway, I made so many commits. I would like to get comments before going ahead more.

example output:

$ sudo ./lsfd | grep -v mem | head -30 COMMAND PID USER ASSOC MODE TYPE DEVNAME MNTID INODE NAME systemd 1 root exe --- REG dm-0 0 201398717 /usr/lib/systemd/systemd systemd 1 root cwd --- DIR dm-0 0 96 / systemd 1 root rtd --- DIR dm-0 0 96 / systemd 1 root cgroup --- REG 0:4 0 4026531835 cgroup:[4026531835] systemd 1 root ipc --- REG 0:4 0 4026531839 ipc:[4026531839] systemd 1 root mnt --- REG 0:4 0 4026531840 mnt:[4026531840] systemd 1 root net --- REG 0:4 0 4026532000 net:[4026532000] systemd 1 root pid --- REG 0:4 0 4026531836 pid:[4026531836] systemd 1 root pid4c --- REG 0:4 0 4026531836 pid:[4026531836] systemd 1 root time --- REG 0:4 0 4026531834 time:[4026531834] systemd 1 root time4c --- REG 0:4 0 4026531834 time:[4026531834] systemd 1 root user --- REG 0:4 0 4026531837 user:[4026531837] systemd 1 root uts --- REG 0:4 0 4026531838 uts:[4026531838] ...

check list taken from @karelzak's [comments](https://github.com/karelzak/util-linux/pull/1418#issuecomment-905455422):

[x] ~it would be nice to avoid generic struct names like "file", it would be better to have for example "struct lsfd_file", etc.~ the request for change is canceld

[ ] can we parse "name" and deduce TYPE rather than use UNKN? , for example...seems like we can use INOTIFY, SIGNAL, and TIMER there

[ ] Why the same file for the same task is printed more than once: ... it would be nice to add a hint about the difference to the output. Now it's confusing.

[ ] It would be nice to support more "views", the current output is huge, and add some aggregations to reduce it would be useful in some use-cases:

[ ] commands/tasks -- provides complete info; (the current implementation) the relation COMMAND:INODE:etc is unique

[ ] file - provide a list of used inodes; INODE is unique in output, COMMAND is not printed and replaced by the number of processes (aka NPROCS - see lsns where we do the same), USER is replaced by NUSERS, etc.

[ ] user - provide a list of users who has open something; UID is unique in output, INODE is replaced by NFILES and COMMAND by NPROCS, etc.

[x] summary - just two columns, description and value, something like:

[x] number of open files: 123

[x] number of processes: 567

[x] used types: REG,DIR,SOCK,INOTIFY, ....

[ ] used block devices: sda1, sdb2, ...

[x] add MAJ:MIN for major and minor numbers, remove DEVICE (we use MAJ:MIN in other tools)

[x] add DEVTYPE for blk, char, and nodev

[x] remove "nodev:" from DEVNAME

[x] maybe rename DEVNAME to SOURCE as we have here things like 'devtmpfs' etc.

[ ] add filters; yes I know, you can use grep, but for some use-cases like JSON or when you filter by data that is missing in the output it's better to have a basic filter in the command:

[x] ~add filter by TYPE (lsfd --type REG)~ → write the way to do the same with -Q option to lsfd.1.

[ ] add filter by filename/path (lsfd /usr or lsfd /etc/passwd)

[ ] ~add filter by SOURCE (lsfd --source sda1)~ → write the way to do the same with -Q option to lsfd.1.

[x] ~add filter by DEVTYPE (lsfd --devtype blk)~ → write the way to do the same with -Q option to lsfd.1.

[x] ~add filter by COMMAND (lsfd --command system)~ → write the way to do the same with -Q option to lsfd.1.

[x] ~add filter by task type, userspace vs. kerne threads -- see ps(1) and commands with [name] (lsfd --kernel | --userspace)~

[x] implement KTHREAD column.

[x] write the way to do the same with -Q option to lsfd.1.

[x] ~add --deleted and --nodeleted~ → write the way to do the same with -Q option to lsfd.1.

[ ] filters should be possible to use with "views" (lsfd --summary --command systemd)

[ ] man page

[x] cherry-pick @mariobl's work submitted to the utli-linux mailing list, https://lore.kernel.org/util-linux/[email protected]om/T/#u as the base version

[x] write about filtering

[x] add examples

[ ] write the details of columns

my check list:

[x] -p/--pids filter working at information gathering time. This option works well with pidof as strace's -p option does.

[x] generic filtering engine

[x] regex pattern in filter expression

[ ] test cases

file type aspects

[x] regular file

[x] pipe

[x] directory

[x] symlink

[x] char dev

[x] blk dev

[ ] sockets

[x] socketpair (AF_UNIX, SOCK_STREAM, 0)

[ ] anon_inodes

column aspects

[ ] ASSOC

[x] CHRDRV

[x] COMMAND

[ ] DELETED

[x] DEV

[x] DEVTYPE

[x] FD

[x] FLAGS

[x] INODE

[x] MAJ:MIN

[ ] MAPLEN

[ ] MISCDEV

[x] MNTID

[x] MODE

[x] NAME

[x] NLINK

[ ] PARTITION

[x] PID

[x] POS

[x] PROTONAME

[x] RDEV

[x] SIZE

[x] SOURCE

[ ] TID

[x] TYPE

[x] UID

[x] USER

[ ] FUID

[ ] OWNER

[ ] various status about socket

[ ] IPC end points features like -E option implemented in lsof

[ ] file desciptor based IPC end points

[x] FIFOs

[ ] UNIX socket

[ ] PTY master/slave

[ ] INET socket used in localhost

[ ] posix_mqueue

[ ] eventfd

[ ] eventpoll?

[ ] sheme based IPC end points

[ ] more consideration about namespaces

[ ] collect more info from fdinfo

[ ] inotify

[ ] epoll

[ ] eventfd

[ ] pts

[ ] /dev/net/tun

[ ] cmdline completion rules for bash

[ ] --no-wrap option

[ ] whatever lsof supports
opened by masatake 57

How to compile util-linux on mac?

I got the following error when I run make on Mac OS X.

Does anybody know what is wrong?

$ make sys-utils/flock
gcc -g -O2    sys-utils/flock.c   -o sys-utils/flock
sys-utils/flock.c:42:10: fatal error: 'c.h' file not found
#include "c.h"
         ^~~~~
1 error generated.
make: *** [sys-utils/flock] Error 1

$ make
...
  CC       sys-utils/ipcrm.o
sys-utils/ipcrm.c:246:17: error: variable has incomplete type 'struct seminfo'
        struct seminfo seminfo;
                       ^
sys-utils/ipcrm.c:246:9: note: forward declaration of 'struct seminfo'
        struct seminfo seminfo;
               ^
sys-utils/ipcrm.c:253:21: error: use of undeclared identifier 'SHM_INFO'
                maxid = shmctl(0, SHM_INFO, &shmseg);
                                  ^
sys-utils/ipcrm.c:258:23: error: use of undeclared identifier 'SHM_STAT'
                        rm_me = shmctl(id, SHM_STAT, &shmseg);
                                           ^
sys-utils/ipcrm.c:266:24: error: use of undeclared identifier 'SEM_INFO'
                maxid = semctl(0, 0, SEM_INFO, arg);
                                     ^
sys-utils/ipcrm.c:272:26: error: use of undeclared identifier 'SEM_STAT'
                        rm_me = semctl(id, 0, SEM_STAT, arg);
                                              ^
5 errors generated.
make[2]: *** [sys-utils/ipcrm.o] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

opened by pengyu 27

enabling libcryptsetup dependency (for verity) causes conflicts with other libraries
Until recently, libmount was a low-level library with few dependencies, that could be safely depended on by things like GLib.

The addition of the optional libcryptsetup dependency changes that somewhat. There seem to be two main problem areas causing crashes in distributions that have enabled it, such as recent development versions of Debian and Ubuntu:

The json-c library contains symbols that collide with other JSON libraries such as libjansson (akheron/jansson#523, json-c/json-c#621) and json-glib (json-glib#33), because it seems every implementation of JSON in C has chosen to use the json_ namespace. This is particularly troublesome for anything that depends on json-glib, which depends on GLib, which depends on libmount, which depends on libcryptsetup, which depends on json-c, almost guaranteeing symbol conflicts.

libcryptsetup's default/recommended OpenSSL backend for crypto has symbol conflicts with anything that statically links a different version of OpenSSL, which seems to be popular in the proprietary software world (Steam and Minecraft are known to be affected). ValveSoftware/steam-for-linux#7223 and ValveSoftware/steam-for-linux#6861 are examples of this.

I don't know which project(s) should take action to solve this, but I'm trying to make sure all the upstreams involved in this collision are at least aware that there's a problem, so that whatever action is taken can be somewhat coordinated.

One way that this might be solved within libmount (if that is considered to be a desirable place to solve it) would be to move the verity feature into a helper executable, or perhaps into a dlopened module that is loaded with RTLD_LOCAL to avoid it interfering with symbol resolution in the flat default ELF namespace.

Another possible solution, if the verity feature is mostly of interest to embedded or special-purpose distributions, would be to recommend that general-purpose distributions disable that feature.
opened by smcv 26
libblkid: improve identification of ISO9660 partition

This addresses some feedback on https://github.com/karelzak/util-linux/pull/872 by ensuring (rather than assuming) that a partition table entry corresponds to the ISO9660 filesystem, and by only applying the logic to restrict the metadata to a partition device in cases where there is actually a device (which does not happen for CD/DVD /dev/sr0).

As noted, the udev behaviour here is also questionable and indeed if it behaved differently I might not have put attention into modifying blkid. However, I think the information presented by blkid in the case of a combined ISO & partition setup (where a partition points at the ISO data too) is questionable, where it effectively reports the same filesystem on two devices, so I think this approach still makes sense for blkid. Separately I'll take another look at the udev side, but probably not until next week.

opened by dsd 26

Fedora hardlink vs Debian hardlink

It seems you have merged the Fedora version of hardlink into util-linux. This is unfortunate, as Debian, Ubuntu, Arch, and others are shipping a different hardlink, developed my me, that has a lot more features:

Usage: ./hardlink [options] directory|file ...
Options:
  -V, --version         show program's version number and exit
  -h, --help            show this help message and exit
  -v, --verbose         Increase verbosity (repeat for more verbosity)
  -n, --dry-run         Modify nothing, just print what would happen
  -f, --respect-name    Filenames have to be identical
  -p, --ignore-mode     Ignore changes of file mode
  -o, --ignore-owner    Ignore owner changes
  -t, --ignore-time     Ignore timestamps (when testing for equality)
  -X, --respect-xattrs  Respect extended attributes
  -m, --maximize        Maximize the hardlink count, remove the file with
                        lowest hardlink cout
  -M, --minimize        Reverse the meaning of -m
  -O, --keep-oldest     Keep the oldest file of multiple equal files
                        (lower precedence than minimize/maximize)
  -x REGEXP, --exclude=REGEXP
                        Regular expression to exclude files
  -i REGEXP, --include=REGEXP
                        Regular expression to include files/dirs
  -s <num>[K,M,G], --minimum-size=<num>[K,M,G]
                        Minimum size for files. Optional suffix
                        allows for using KiB, MiB, or GiB

Compatibility options to Jakub Jelinek's hardlink:
  -c                    Compare only file contents, same as -pot

Switching to this version of hardlink would break things for a lot of users. Apart from the meaning of -f, mine is a superset option-wise.

I'd argue given that my version is a superset of this version, we should probably consolidate on this one. I think I mentioned this to Jakub back in the day, but I'm not sure.

ASSIGNED

opened by julian-klode 21

lscpu L3 cache size on Ryzen 5 1600
lscpu version 2.32 reports the CPU has 8 MiB cache, while the correct value is 16 MiB:

$ lscpu Model name: AMD Ryzen 5 1600 Six-Core Processor L3 cache: 8192K

/sys (Linux 4.17.0) provides the correct cache IDs:

$ cat /sys/devices/system/cpu/cpu0/cache/index3/id 0 $ cat /sys/devices/system/cpu/cpu6/cache/index3/id 1 $ cat /sys/devices/system/cpu/cpu0/cache/index3/size 8192K

It would be nice if lscpu printed the number of L1/L2/L3 caches, such as:

L1d cache: 6*32K L1i cache: 6*64K L2 cache: 6*512K L3 cache: 2*8192K

For comparison, lstopo version 1.11.2 (http://www.open-mpi.org/projects/hwloc/) works OK.
TODO
opened by atomsymbol 20

[lsfd] tests failed

Hello!

@masatake

sparc64 host:

tests$ git describe
v2.37-648-g1b44d0923

tests$ ./run.sh --show-diff lsfd

-------------------- util-linux regression tests --------------------

                    For development purpose only.
                 Don't execute on production system!

       kernel: 5.16.0-rc2

      options: --show-diff \
               --srcdir=/1/mator/util-linux/tests/.. \
               --builddir=/1/mator/util-linux/tests/..

         lsfd: directory                      ... SKIPPED (no root permissions)
         lsfd: directory                      ... OK
         lsfd: pipe, no fork                  ... OK
         lsfd: read-only regular file         ...
diff-{{{
--- /1/mator/util-linux/tests/expected/lsfd/mkfds-ro-regular-file       2021-11-26 16:29:39.397686937 +0300
+++ /1/mator/util-linux/tests/output/lsfd/mkfds-ro-regular-file 2021-11-26 17:57:41.055617042 +0300
@@ -13,4 +13,4 @@
 MNTID[RUN]: 0
 DEV[RUN]: 0
 FINDMNT[RUN]: 0
-DEV[STR]: 0
+DEV[STR]: 1
}}}-diff

 FAILED (lsfd/mkfds-ro-regular-file)
         lsfd: character device with O_RDWR   ... OK
         lsfd: AF_UNIX socket pair created with socketpair(2) ...
diff-{{{
--- /1/mator/util-linux/tests/expected/lsfd/mkfds-socketpair    2021-11-26 16:29:39.397686937 +0300
+++ /1/mator/util-linux/tests/output/lsfd/mkfds-socketpair      2021-11-26 17:57:41.831650266 +0300
@@ -1,3 +1,3 @@
-    3  rw- SOCK sockfs      UNIX
-    4  rw- SOCK sockfs      UNIX
+    3  rw- SOCK sockfs UNIX-STREAM
+    4  rw- SOCK sockfs UNIX-STREAM
 ASSOC,MODE,TYPE,SOURCE,PROTONAME: 0
}}}-diff

 FAILED (lsfd/mkfds-socketpair)
         lsfd: symbolic link itself opened with O_PATH ... OK
         lsfd: directory                      ... SKIPPED (no root permissions)
         lsfd: directory                      ... OK

---------------------------------------------------------------------
  2 tests of 9 FAILED
---------------------------------------------------------------------

ppc64 host:

tests$ ./run.sh --show-diff lsfd

-------------------- util-linux regression tests --------------------

                    For development purpose only.
                 Don't execute on production system!

       kernel: 5.15.0-1-powerpc64

      options: --show-diff \
               --srcdir=/home/mator/util-linux.git/tests/.. \
               --builddir=/home/mator/util-linux.git/tests/..

         lsfd: directory                      ... SKIPPED (no root permissions)
         lsfd: directory                      ... OK
         lsfd: pipe, no fork                  ... OK
         lsfd: read-only regular file         ... OK
         lsfd: character device with O_RDWR   ...
diff-{{{
--- /home/mator/util-linux.git/tests/expected/lsfd/mkfds-rw-character-device    2021-11-26 18:08:03.405921213 +0300
+++ /home/mator/util-linux.git/tests/output/lsfd/mkfds-rw-character-device      2021-11-26 19:08:30.724078893 +0300
@@ -3,4 +3,4 @@
 MNTID[RUN]: 0
 DEV[RUN]: 0
 FINDMNT[RUN]: 0
-DEV[STR]: 0
+DEV[STR]: 1
}}}-diff

 FAILED (lsfd/mkfds-rw-character-device)
         lsfd: AF_UNIX socket pair created with socketpair(2) ...
diff-{{{
--- /home/mator/util-linux.git/tests/expected/lsfd/mkfds-socketpair     2021-11-26 18:08:03.405921213 +0300
+++ /home/mator/util-linux.git/tests/output/lsfd/mkfds-socketpair       2021-11-26 19:08:30.868079286 +0300
@@ -1,3 +1,3 @@
-    3  rw- SOCK sockfs      UNIX
-    4  rw- SOCK sockfs      UNIX
+    3  rw- SOCK sockfs UNIX-STREAM
+    4  rw- SOCK sockfs UNIX-STREAM
 ASSOC,MODE,TYPE,SOURCE,PROTONAME: 0
}}}-diff

 FAILED (lsfd/mkfds-socketpair)
         lsfd: symbolic link itself opened with O_PATH ... OK
         lsfd: directory                      ... SKIPPED (no root permissions)
         lsfd: directory                      ... OK

---------------------------------------------------------------------
  2 tests of 9 FAILED
---------------------------------------------------------------------

opened by mator 19

mount -a fails to use UUID if /proc and /sys are to be mounted

I am using buildroot with mount from util-linux-2.37.2, libmount 2.37.2. When my fstab contains UUIDs, mount at boot fails to find them. After some experimenting, it seems that it would need /proc or /sys to find device by UUID. And the fact is, that exact "mount -a" at boot is used to mount /proc and /sys. So if they were already mounted, then UUID look-up succeeds. If they are to be mounted by the same "mount -a", then UUID fails.

I don't think I've seen this problem on earlier versions. I suspect "mount -a" should delay the UUID/LABEL mounts to the last step, so that /proc and /sys are always mounted first.

opened by stsp 17
libmount: Avoid triggering autofs in lookup_umount_fs_by_statfs

Currently, umount /foo results in a statfs("/foo") call, which triggers autofs. This can create another mountpoint on /foo, which is then unmounted later instead of the actual /foo at the time umount was called.

This is especially an issue for umount -R /bar, which just fails with -EBUSY as the accidental mountpoint is never accounted for and so it tries to umount /bar before /bar/someautofs.

Replace the direct statfs call with open(path, O_PATH) + fstatfs, which sees the autofs mount directly, without triggering it.

opened by Vogtinator 16
libblkid: Btrfs duplicate "filesystem" block devices for a single filesystem.

Looking at changing the code on my system, just wanted to send a heads-up.

Working on https://gitlab.gnome.org/GNOME/gvfs/-/issues/519

Traced value for "usage" => "filesystem" coming from libblkid. When btrfs has multiple devices I plan on adding a check, along with the obvious magic number matches, that /dev/disk/by-uuid/%s(*follow symlinks) has the same device id as the current device. Idealy in that case usage would be "filesystem-part" with everything else the same.

After working on this issue for several days, I feel this is for the best. RFC.

opened by cheako 15
fstrim: Remove all skipped entries before de-duplication

When processing fstab entries, de-duplication is performed based on the source before all tests on the target have been checked, resulting in some entries being skipped when a removed duplicate with a different target would not have been.

The fix is to move all the target checks before the source de-duplication.

Addresses: #1686 Signed-off-by: Scott Shambarger [email protected]

opened by sshambar 0
fstrim -a fails to trim filesystems if an overlay is ordered before it in fstab
When the fstrim.service was running on Fedora CoreOS 35 (util-linux-2.37.4), it wasn't actually trimming the root filesystem. However, if I ran 'fstrim -v /' it correctly trimmed the device.

fstrim.service on coreos uses the standard '--listed-in /etc/fstab:/proc/self/mountinfo' and does not have /etc/fstab, so it parses the mountinfo, which for the root device has:

/dev/vda4 /sysroot xfs ro,seclabel,relatime,... /dev/vda4 / xfs rw,seclabel,relatime,... /dev/vda4 /etc xfs rw,seclabel,relatime,... /dev/vda4 /usr xfs ro,seclabel,relatime,... /dev/vda4 /sysroot/ostree/deploy/fedora-coreos/var xfs rw,seclabel,relatime,... /dev/vda4 /var xfs rw,seclabel,relatime,...

Adding a little debug output to the code showed the following behavior in fstrim.c:fstrim_all_from_file() related to the root device /dev/vda4:

Remove useless entries loop

src: /dev/vda4 - tgt: /var

src: /dev/vda4 - tgt: /sysroot/ostree/deploy/fedora-coreos/var

src: /dev/vda4 - tgt: /usr

src: /dev/vda4 - tgt: /etc

src: /dev/vda4 - tgt: /

src: /dev/vda4 - tgt: /sysroot De-duplicate by source called Do FITRIM loop src: /dev/vda4 - tgt: /sysroot mountpoint: / SKIP: is overlay

Clearly the de-duplication is removing the non-overlay entry, and then the actually trim loop skips the only remaining entry for the vda4 source.

I re-coded the function to place all the tests that "skip an entry" into the first "remove useless entries" loop, and then everything worked as expected.

The post-2.37 code changed to use the new function is_unwanted_fs() which would actually fix the case above as it checks for the "ro" mount option, but the real bug in overlay handling still exists (not to mention other cases when the access/directory check on the target might still lead to the wrong filesystem entry making it past the de-duplication). Moving all those checks to the first loop avoids those bugs.

I will submit a pull request with my proposed patch...
opened by sshambar 0
Feature idea: wipefs --recursive

Intended behavior: wipefs --recursive would operate on the specified device and its subdevices, for example all the partitions of a disk.

This would make it easier to get all unwanted signature.

It would solve a problem I experienced, where wiping the partition table of disk lead to the provisioning tool recreating an identical one and then rediscovering the old filesystems.

opened by t-8ch 1

po: No rule to make target 'all'.

Hi, I want to try out #1658 but while trying to build from source rather than release tarball, this happens:

make  all-recursive
make[1]: Entering directory '/build/source'
Making all in po
make[2]: Entering directory '/build/source/po'
make[2]: *** No rule to make target 'all'.  Stop.
make[2]: Leaving directory '/build/source/po'
make[1]: *** [Makefile:14619: all-recursive] Error 1
make[1]: Leaving directory '/build/source'
make: *** [Makefile:6329: all] Error 2

When I look into /build/source/po/, here's what's in it (excluding po files):

$ ls -1 !(*.po)
boldquot.sed
[email protected]
[email protected]
insert-header.sin
LINGUAS
Makefile.in
Makefile.in.in
Makevars
Makevars.template
meson.build
quot.sed
remove-potcdate.sin
Rules-quot
update-potfiles
util-linux.pot

Notably absent from this list is a Makefile.

Earlier in the log it says:

...
Copying file m4/wint_t.m4
Copying file m4/xsize.m4
Copying file po/Makefile.in.in
Copying file po/Makevars.template
Copying file po/Rules-quot
Copying file po/boldquot.sed
Copying file po/[email protected]
...

Full log

@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking sources
unpacking source archive /nix/store/vkyrg2br8x9zwq52s3p8r0mn4s7mbw3v-source
source root is source
@nix { "action": "setPhase", "phase": "patchPhase" }
patching sources
applying patch /nix/store/1j9sp0yd6jbcbkwsc5a826rxqy3lk6vh-rtcwake-search-PATH-for-shutdown.patch
patching file include/pathnames.h
patching file sys-utils/rtcwake.c
Hunk #1 succeeded at 601 (offset 14 lines).
patching script interpreter paths in tests/run.sh
tests/run.sh: interpreter directive changed from "#!/bin/bash" to "/nix/store/fcd0m68c331j7nkdxvnnpb8ggwsaiqac-bash-5.1-p16/bin/bash"
@nix { "action": "setPhase", "phase": "autoreconfPhase" }
autoreconfPhase
autoreconf: export WARNINGS=
autoreconf: Entering directory '.'
autoreconf: running: autopoint --force
Copying file ABOUT-NLS
Copying file config/config.rpath
Copying file m4/codeset.m4
Copying file m4/extern-inline.m4
Copying file m4/fcntl-o.m4
Copying file m4/gettext.m4
Copying file m4/glibc2.m4
Copying file m4/glibc21.m4
Copying file m4/iconv.m4
Copying file m4/intdiv0.m4
Copying file m4/intl.m4
Copying file m4/intldir.m4
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Copying file m4/inttypes_h.m4
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Copying file m4/lib-ld.m4
Copying file m4/lib-link.m4
Copying file m4/lib-prefix.m4
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Copying file m4/nls.m4
Copying file m4/po.m4
Copying file m4/printf-posix.m4
Copying file m4/progtest.m4
Copying file m4/size_max.m4
Copying file m4/stdint_h.m4
Copying file m4/threadlib.m4
Copying file m4/uintmax_t.m4
Copying file m4/visibility.m4
Copying file m4/wchar_t.m4
Copying file m4/wint_t.m4
Copying file m4/xsize.m4
Copying file po/Makefile.in.in
Copying file po/Makevars.template
Copying file po/Rules-quot
Copying file po/boldquot.sed
Copying file po/[email protected]
Copying file po/[email protected]
Copying file po/insert-header.sin
Copying file po/quot.sed
Copying file po/remove-potcdate.sin
autoreconf: running: aclocal --force -I m4
autoreconf: configure.ac: tracing
autoreconf: running: libtoolize --copy --force
libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, 'config'.
libtoolize: copying file 'config/ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
autoreconf: configure.ac: not using Intltool
autoreconf: running: gtkdocize --copy
autoreconf: running: aclocal --force -I m4
autoreconf: running: /nix/store/maf7lyrx7giba9i0rxzw2r6ad2ai1gkf-autoconf-2.71/bin/autoconf --force
autoreconf: running: /nix/store/maf7lyrx7giba9i0rxzw2r6ad2ai1gkf-autoconf-2.71/bin/autoheader --force
autoreconf: running: automake --add-missing --copy --force-missing
configure.ac:18: installing 'config/ar-lib'
configure.ac:13: installing 'config/compile'
configure.ac:127: installing 'config/config.guess'
configure.ac:127: installing 'config/config.sub'
configure.ac:14: installing 'config/install-sh'
configure.ac:14: installing 'config/missing'
Makefile.am: installing 'config/depcomp'
configure.ac: installing 'config/ylwrap'
libmount/python/Makemodule.am:9: installing 'config/py-compile'
Makefile.am:100:   'libmount/Makemodule.am' included from here
libmount/Makemodule.am:4:   'libmount/python/Makemodule.am' included from here
autoreconf: Leaving directory '.'
@nix { "action": "setPhase", "phase": "configurePhase" }
configuring
fixing libtool script ./config/ltmain.sh
configure flags: --disable-static --disable-dependency-tracking --prefix=/nix/store/bkmbz28wdkrgvzlckn687v9lb3hv2cd0-util-linux-minimal-2.37.4 --bindir=/nix/store/ivnx798k5yvdjag1xn9x75mmrz5c3798-util-linux-minimal-2.37.4-bin/bin --sbindir=/nix/store/ivnx798k5yvdjag1xn9x75mmrz5c3798-util-linux-minimal-2.37.4-bin/sbin --includedir=/nix/store/q22xiw4yi32vh8aiy38j57jgijrx8dgi-util-linux-minimal-2.37.4-dev/include --oldincludedir=/nix/store/q22xiw4yi32vh8aiy38j57jgijrx8dgi-util-linux-minimal-2.37.4-dev/include --mandir=/nix/store/d4p7s52hhah2vj8g77g46iszwnbkjvki-util-linux-minimal-2.37.4-man/share/man --infodir=/nix/store/ivnx798k5yvdjag1xn9x75mmrz5c3798-util-linux-minimal-2.37.4-bin/share/info --docdir=/nix/store/bkmbz28wdkrgvzlckn687v9lb3hv2cd0-util-linux-minimal-2.37.4/share/doc/util-linux --libdir=/nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/lib --libexecdir=/nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/libexec --localedir=/nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/share/locale --localstatedir=/var --enable-write --disable-use-tty-group --enable-fs-paths-default=/run/wrappers/bin:/run/current-system/sw/bin:/sbin --disable-makeinstall-setuid --disable-makeinstall-chown --disable-su --disable-nls --without-ncursesw --without-systemd --without-systemdsystemunitdir SYSCONFSTATICDIR=/nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/lib
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checking dependency style of gcc... none
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configure:   --runstatedir defaults to /run
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checking command to parse nm output from gcc object... ok
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checking dynamic linker characteristics... (cached) GNU/Linux ld.so
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checking for sighandler_t... yes
checking whether CPU_ALLOC is declared... yes
checking for crypt.h... yes
checking for udev_new in -ludev... no
checking for ncurses6-config... no
checking for ncurses5-config... no
checking for ncurses... no
checking for initscr in -lncurses... no
checking for tinfo... no
checking for tgetent in -ltinfo... no
checking for readline in -lreadline... no
configure: WARNING: ncursesw, ncurses or slang library not found; not building cfdisk
checking for syscall fallocate... SYS_fallocate
checking for valid fallocate() function... yes
checking for valid posix_fallocate() function... yes
checking for syscall unshare... SYS_unshare
checking for valid unshare() function... yes
checking for valid setns() function... yes
checking for capng_apply in -lcap-ng... yes
checking for crc32 in -lz... yes
checking for magic_open in -lmagic... yes
checking for syscall swapon... SYS_swapon
checking for syscall swapoff... SYS_swapoff
checking for swapon... yes
checking for swapoff... yes
checking for syscall prlimit64... SYS_prlimit64
checking for valid prlimit() function... yes
checking for syscall pivot_root... SYS_pivot_root
configure: WARNING: ncursesw, ncurses or slang library not found; not building irqtop
configure: WARNING: raw.h header file not found; not building raw
checking for libuser >= 0.58... no
configure: WARNING: ncursesw or ncurses libraries not found; not building ul
configure: WARNING: ncursesw or ncurses libraries not found; not building more
configure: WARNING: ncursesw or ncurses library not found; not building setterm
checking for syscall ioprio_set... SYS_ioprio_set
checking for syscall ioprio_get... SYS_ioprio_get
checking for syscall sched_getaffinity... SYS_sched_getaffinity
checking for syscall sched_setattr... SYS_sched_setattr
checking for syscall sched_setattr... (cached) SYS_sched_setattr
checking for libeconf... no
checking for a Python interpreter with version >= 2... none
configure: WARNING: python interpreter not found, do not build python bindings
configure: WARNING: libpython not found; not building pylibmount
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating libblkid/docs/Makefile
config.status: creating libblkid/docs/version.xml
config.status: creating libblkid/src/blkid.h
config.status: creating libfdisk/docs/Makefile
config.status: creating libfdisk/docs/version.xml
config.status: creating libfdisk/src/libfdisk.h
config.status: creating libmount/docs/Makefile
config.status: creating libmount/docs/version.xml
config.status: creating libmount/src/libmount.h
config.status: creating libsmartcols/docs/Makefile
config.status: creating libsmartcols/docs/version.xml
config.status: creating libsmartcols/src/libsmartcols.h
config.status: creating po/Makefile.in
config.status: creating po-man/Makefile
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
config.status: executing po-directories commands

        util-linux  2.38

        prefix:                    /nix/store/bkmbz28wdkrgvzlckn687v9lb3hv2cd0-util-linux-minimal-2.37.4
        exec prefix:               ${prefix}

        bindir:                    /nix/store/ivnx798k5yvdjag1xn9x75mmrz5c3798-util-linux-minimal-2.37.4-bin/bin
        sbindir:                   /nix/store/ivnx798k5yvdjag1xn9x75mmrz5c3798-util-linux-minimal-2.37.4-bin/sbin
        libdir:                    /nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/lib
        usrbin_execdir:            ${exec_prefix}/bin
        usrsbin_execdir:           ${exec_prefix}/sbin
        usrlib_execdir:            ${exec_prefix}/nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/lib

        localstatedir:             /var
        runstatedir:               /run
        includedir:                /nix/store/q22xiw4yi32vh8aiy38j57jgijrx8dgi-util-linux-minimal-2.37.4-dev/include
        sysconfdir:                ${prefix}/etc
        sysconfstaticdir:          /nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/lib

        vendordir:                 

        Python:                    :
        Python version:            
        Python libs:               

        Bash completions:          ${datarootdir}/bash-completion/completions
        Systemd support:           no
        Systemd unitdir:           no
        libeconf support:          no
        Btrfs support:             yes
        Wide-char support:         yes
        libcryptsetup support:     

        Manual pages:              no
        Manual pages translated:   no

        compiler:                  gcc / g++
        suid cflags:               
        ldflags:                   
        suid ldflags:              
        ASAN enabled:              no

        cflags:                    -g -O2

        warnings:

 -fno-common -Wall -Wextra -Waddress-of-packed-member -Wdiscarded-qualifiers -Wformat-security -Wimplicit-function-declaration -Wmissing-declarations -Wmissing-parameter-type -Wmissing-prototypes -Wnested-externs -Wno-missing-field-initializers -Wpointer-arith -Wredundant-decls -Wsign-compare -Wstrict-prototypes -Wtype-limits -Wuninitialized -Wunused-but-set-parameter -Wunused-but-set-variable -Wunused-parameter -Wunused-result -Wunused-variable -Werror=sequence-point

 Type 'make' or 'make <utilname>' to compile.

@nix { "action": "setPhase", "phase": "buildPhase" }
building
build flags: -j16 -l16 SHELL=/nix/store/fcd0m68c331j7nkdxvnnpb8ggwsaiqac-bash-5.1-p16/bin/bash usrbin_execdir=/nix/store/ivnx798k5yvdjag1xn9x75mmrz5c3798-util-linux-minimal-2.37.4-bin/bin usrlib_execdir=/nix/store/v19my1f4a1badxzll0p59cn4xxsxnj80-util-linux-minimal-2.37.4-lib/lib usrsbin_execdir=/nix/store/ivnx798k5yvdjag1xn9x75mmrz5c3798-util-linux-minimal-2.37.4-bin/sbin
echo 2.38 > .version-t && mv .version-t .version
make  all-recursive
make[1]: Entering directory '/build/source'
Making all in po
make[2]: Entering directory '/build/source/po'
make[2]: *** No rule to make target 'all'.  Stop.
make[2]: Leaving directory '/build/source/po'
make[1]: *** [Makefile:15075: all-recursive] Error 1
make[1]: Leaving directory '/build/source'
make: *** [Makefile:6471: all] Error 2

(This is built via Nix using Atemu/[email protected], also happens on master)

opened by Atemu 1

mount: support X-mount.idmap
This adds a new mount option X-mount.idmap. This mount option can be used to create an idmapped mount.

An idmapped mount allows to change ownership of all files located under a mount according to the ID-mapping associated with a user namespace.

The ownership change is tied to the lifetime and localized to the relevant mount. The relevant ID-mapping can be specified in two ways:

A user can specify the ID-mapping directly. The ID-mapping must be specified using the syntax id-type:id-mount:id-host:id-range Specifying "u" as the id-type prefix creates a UID-mapping, "g" creates a GID-mapping and omitting id-type or specifying "b" creates both a UID- and GID-mapping. The id-mount parameter indicates the starting ID in the new mount. The id-host parameter indicates the starting ID in the filesystem. The id-range parameter indicates how many IDs are to be mapped. It is possible to specify multiple ID-mappings. The individual ID-mappings must be separated by spaces.

For example, the ID-mapping X-mount.idmap=u:1000:0:1 g:1001:1:2 5000:1000:2 creates an idmapped mount where UID 0 is mapped to UID 1000, GID 1 is mapped to GUID 1001, GID 2 is mapped to GID 1002, UID and GID 1000 are mapped to 5000, and UID and GID 1001 are mapped to 5001 in the mount.

When an ID-mapping is specified directly a new user namespace will be allocated with the requested ID-mapping. The newly created user namespace will be attached to the mount.

A user can specify a user namespace file. The user namespace will then be attached to the mount and the ID-mapping of the user namespace will become the ID-mapping of the mount. For example, X-mount.idmap=/proc/PID/ns/user will attach the user namespace of the process PID to the mount.

Even more details about idmapped mounts can be found in the mount_setattr(2) manpage of the linux-manpage project.

Signed-off-by: Christian Brauner (Microsoft) [email protected]
TODO
opened by brauner 10

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Owner

Karel Zak

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