util-linux is a random collection of Linux utilities

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CLI util-linux
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.

Comments
  • CD cannot be mounted automatically (The cd was burned twice in Windows)

    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
    

    udevinfo

    opened by HeroesLoveToRoujiamo 81
  • RFC: lsfd, a brand new Linux specific replacement for lsof

    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
    • [x] 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:
    • [ ] filters should be possible to use with "views" (lsfd --summary --command systemd)
    • [x] 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
      • [x] 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
        • [x] sockets
        • [x] socketpair (AF_UNIX, SOCK_STREAM, 0)
        • [x] 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
    • [x] 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?

    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

    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

    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
  • ci: build & test util-linux on Fedora Rawhide via Packit

    ci: build & test util-linux on Fedora Rawhide via Packit

    Let's run at least the unit-tests on Fedora Rawhide via Packit, as it supports a couple of alternative architectures (aarch64, ppc64le, s390x) as well as i*86, which were source of issues in the past.

    opened by mrc0mmand 21
  • hwclock Timed out waiting for time change Error

    hwclock Timed out waiting for time change Error

    Good morning,

    I have installed an RTC module with and when trying to read the time it gives me this error.

    hwclock -r -v --rtc /dev/rtc1 hwclock from util-linux 2.37.154-c2ca2 System Time: 1625749015.843650 Using the rtc interface to the clock. Last drift adjustment done at 1625749005 seconds after 1969 Last calibration done at 1625749005 seconds after 1969 Hardware clock is on UTC time Assuming hardware clock is kept in UTC time. Waiting for clock tick... ioctl(3, RTC_UIE_ON, 0): Invalid argument Waiting in loop for time from /dev/rtc1 to change hwclock: Timed out waiting for time change. ...synchronization failed

    Any idea?

    Thanks!

    opened by Ataraxiall 21
  • Fedora hardlink vs Debian hardlink

    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 2.38 crashing with seg fault on aarch64_cortex-a53

    lscpu 2.38 crashing with seg fault on aarch64_cortex-a53

    Recent OpenWrt install seg faults with all the parameter combinations I've tested (except -h and -V, they work fine). Reported on https://github.com/openwrt/openwrt/issues/10737, where it's felt to be an upstream issue.

    $ cat /etc/os-release
    NAME="OpenWrt"
    VERSION="SNAPSHOT"
    ID="openwrt"
    ID_LIKE="lede openwrt"
    PRETTY_NAME="OpenWrt SNAPSHOT"
    VERSION_ID="snapshot"
    HOME_URL="https://openwrt.org/"
    BUG_URL="https://bugs.openwrt.org/"
    SUPPORT_URL="https://forum.openwrt.org/"
    BUILD_ID="r20614-c27279dc26"
    OPENWRT_BOARD="mediatek/mt7622"
    OPENWRT_ARCH="aarch64_cortex-a53"
    OPENWRT_TAINTS=""
    OPENWRT_DEVICE_MANUFACTURER="OpenWrt"
    OPENWRT_DEVICE_MANUFACTURER_URL="https://openwrt.org/"
    OPENWRT_DEVICE_PRODUCT="Generic"
    OPENWRT_DEVICE_REVISION="v0"
    OPENWRT_RELEASE="OpenWrt SNAPSHOT r20614-c27279dc26"
    
    $ opkg install lscpu
    Package lscpu (2.38-2) installed in root is up to date.
    
    $ lscpu -V
    lscpu from util-linux 2.38
    
    $ lscpu
    Segmentation fault
    
    $ strace lscpu
    execve("/usr/bin/lscpu", ["lscpu"], 0x7fe684d110 /* 15 vars */) = 0
    set_tid_address(0x7f8f939248)           = 6160
    brk(NULL)                               = 0x2980f000
    brk(0x29811000)                         = 0x29811000
    mmap(0x2980f000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2980f000
    openat(AT_FDCWD, "/etc/ld-musl-aarch64.path", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    openat(AT_FDCWD, "/lib/libsmartcols.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    openat(AT_FDCWD, "/usr/local/lib/libsmartcols.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    openat(AT_FDCWD, "/usr/lib/libsmartcols.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
    fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
    fstat(3, {st_mode=S_IFREG|0755, st_size=98307, ...}) = 0
    read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0`R\0\0\0\0\0\0"..., 960) = 960
    mmap(NULL, 167936, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x7f8f879000
    mmap(0x7f8f8a0000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x17000) = 0x7f8f8a0000
    close(3)                                = 0
    openat(AT_FDCWD, "/lib/libgcc_s.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
    fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
    fstat(3, {st_mode=S_IFREG|0644, st_size=73744, ...}) = 0
    read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\0-\0\0\0\0\0\0"..., 960) = 960
    mmap(NULL, 143360, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x7f8f856000
    mmap(0x7f8f877000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x11000) = 0x7f8f877000
    close(3)                                = 0
    mprotect(0x7f8f8a0000, 4096, PROT_READ) = 0
    mprotect(0x7f8f877000, 4096, PROT_READ) = 0
    mprotect(0x428000, 4096, PROT_READ)     = 0
    ioctl(1, TIOCGWINSZ, {ws_row=60, ws_col=200, ws_xpixel=2200, ws_ypixel=1200}) = 0
    mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92e000
    openat(AT_FDCWD, "/sys/devices/system/cpu", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
    fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
    openat(3, "kernel_max", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
    read(4, "1\n", 1024)                    = 2
    lseek(4, -1, SEEK_CUR)                  = 1
    close(4)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(3, "possible", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
    read(4, "0-1\n", 1024)                  = 4
    close(4)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(3, "present", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
    read(4, "0-1\n", 1024)                  = 4
    close(4)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(3, "online", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
    read(4, "0-1\n", 1024)                  = 4
    close(4)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(AT_FDCWD, "/proc", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
    fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
    openat(4, "cpuinfo", O_RDONLY|O_LARGEFILE) = 5
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    read(5, "processor\t: 0\nBogoMIPS\t: 25.00\nF"..., 1024) = 374
    read(5, "", 1024)                       = 0
    close(5)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    uname({sysname="Linux", nodename="panther", ...}) = 0
    personality(PER_LINUX32)                = 0 (PER_LINUX)
    personality(PER_LINUX)                  = 0x8 (PER_LINUX32)
    openat(3, "dispatching", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    openat(3, "cpufreq/boost", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    openat(4, "sysinfo", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
    openat(3, "vulnerabilities", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 5
    fstat(5, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
    fcntl(5, F_GETFL)                       = 0x20000 (flags O_RDONLY|O_LARGEFILE)
    mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92c000
    fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
    getdents64(5, 0x7f8f92c098 /* 13 entries */, 2048) = 416
    getdents64(5, 0x7f8f92c098 /* 0 entries */, 2048) = 0
    lseek(5, 0, SEEK_SET)                   = 0
    getdents64(5, 0x7f8f92c098 /* 13 entries */, 2048) = 416
    openat(3, "vulnerabilities/spectre_v2", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/itlb_multihit", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/mmio_stale_data", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/mds", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/l1tf", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/spec_store_bypass", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/tsx_async_abort", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/spectre_v1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Mitigation: __user pointer sanit"..., 1023) = 40
    read(6, "", 983)                        = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/retbleed", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/srbds", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    openat(3, "vulnerabilities/meltdown", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 6
    read(6, "Not affected\n", 1023)         = 13
    read(6, "", 1010)                       = 0
    close(6)                                = 0
    close(5)                                = 0
    munmap(0x7f8f92c000, 8192)              = 0
    openat(AT_FDCWD, "/sys/devices/system/node", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    faccessat(3, "cpu0/topology/thread_siblings", F_OK) = 0
    openat(3, "cpu0/topology/thread_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 5
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
    read(5, "", 1024)                       = 0
    close(5)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(3, "cpu0/topology/core_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 5
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
    read(5, "", 1024)                       = 0
    close(5)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(3, "cpu0/topology/book_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    openat(3, "cpu0/topology/drawer_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    faccessat(3, "cpu1/topology/thread_siblings", F_OK) = 0
    openat(3, "cpu1/topology/thread_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 5
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
    read(5, "", 1024)                       = 0
    close(5)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(3, "cpu1/topology/core_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 5
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8f92d000
    fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
    read(5, "", 1024)                       = 0
    close(5)                                = 0
    munmap(0x7f8f92d000, 4096)              = 0
    openat(3, "cpu1/topology/book_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    openat(3, "cpu1/topology/drawer_siblings", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x10} ---
    +++ killed by SIGSEGV +++
    Segmentation fault
    
    opened by efahl 20
  • lscpu L3 cache size on Ryzen 5 1600

    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

    [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
  • libmount: ensure child hangs around until we persisted namespace

    libmount: ensure child hangs around until we persisted namespace

    When we create a new namespace in a child process to persist it we need to ensure that the child hangs around. During exit the child will drop all references to its namespaces and so by the time we call open we might already fail to open the namespace. Fix this.

    Signed-off-by: Christian Brauner (Microsoft) [email protected]

    opened by brauner 0
  • schedutils: clarify the usage and behavior of the taskset command

    schedutils: clarify the usage and behavior of the taskset command

    Provide some minor improvements to the existing taskset man page, namely:

    -- Illustrate the ability to specify cpumasks without a leading "0x" with an example that is clearly hexadecimal.

    -- Clarify that a successful return code from the command does not mean that a process has actually migrated.

    -- Provide a couple of examples to further explain the significance of the taskset return code.

    opened by chaiken 0
  • [ Question ]  Just a few questions how mount working.

    [ Question ] Just a few questions how mount working.

    I see this link from " man umont ". I am not reporting any bugs. I tried only ask.

    I've been a Linux user for many years and I don't always see a change for the better . Maybe it's just a problem with my Linux distribution, so I tried ask. For now I tried test Ubuntu 22.04.1 LTS (Jammy Jellyfish) MATE 1.26.0

    1. I don't see GUI which will work from Desktop or file manager.
    • For to change disk partition permissions.

    Fedora created gnome-disks , but it's a separate app and when I used it , the path was changed every time, when I booted the system. I need constant path, so for now I'm using /etc/fstab ( and path /media )

    1. I see snap in mount point where there should only be hard drive partitions.
    $ lsblk
    NAME                         MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
    loop0                          7:0    0     4K  1 loop /snap/bare/5
    loop1                          7:1    0 146,6M  1 loop /snap/chromium/2238
    loop2                          7:2    0 146,9M  1 loop /snap/chromium/2254
    loop3                          7:3    0  63,2M  1 loop /snap/core20/1738
    loop4                          7:4    0  63,3M  1 loop /snap/core20/1778
    loop5                          7:5    0  55,1M  1 loop /snap/cups/836
    loop6                          7:6    0    55M  1 loop /snap/cups/872
    
    1. I can't uninstall all partitions with one command. I used before something like umount -all

    Today, after this command is only partially functional.

    • I can't start the terminal
    • the partition is still unmounted
    • when I tried to restart the system, the system showed red errors on a black background about snap.
    1. Today, that may not be a problem. But I don't remember how to check which process is blocking mount access. Maybe there is some command that shows the processes using the lock. For example when I'm using GParted mount is locked / busy.

    I wanted to ask how it looks in your Linux distribution ? Is there any chance of an idea of the specification in https://www.freedesktop.org/wiki/Specifications/

    Do you see a chance for a better future now?

    opened by tele1 1
  • new libmount-mountfd api is incompatible with python libmount

    new libmount-mountfd api is incompatible with python libmount

    Python libmount fails if libmount was built with mountfd api.

        ctx = libmount.Context()
        ctx.fstype="overlay"
        ctx.source="overlay"
        lower = ":".join("{:x}".format(x) for x in range(int(yamldata["maxidx"])))
        ctx.options="lowerdir={},upperdir={},workdir={}".format(lower, yamldata["upper"], yamldata["work"])
        ctx.target=yamldata["target"]
        ctx.mount()
    
    Traceback (most recent call last):
      File "/home/asavah/kross/kbs/overmount.py", line 61, in <module>
        main()
      File "/home/asavah/kross/kbs/overmount.py", line 51, in main
        __do_mount(options.mount)
      File "/home/asavah/kross/kbs/overmount.py", line 27, in __do_mount
        ctx.mount()
    TypeError: Invalid argument
    

    Building util-linux with --disable-libmount-mountfd-support works as intended.

    NEEDINFO 
    opened by asavah 1
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