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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OUTPUT | NOTES | AUTHORS | SEE ALSO | AVAILABILITY | COLOPHON |
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LSLOCKS(8) System Administration LSLOCKS(8)
lslocks - list local system locks
lslocks [options]
lslocks lists information about all the currently held file locks in
a Linux system.
-i, --noinaccessible
Ignore lock files which are inaccessible for the current user.
-J, --json
Use JSON output format.
-n, --noheadings
Do not print a header line.
-o, --output list
Specify which output columns to print. Use --help to get a
list of all supported columns.
The default list of columns may be extended if list is
specified in the format +list (e.g. lslocks -o +BLOCKER).
-p, --pid pid
Display only the locks held by the process with this pid.
-r, --raw
Use the raw output format.
-u, --notruncate
Do not truncate text in columns.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
COMMAND
The command name of the process holding the lock.
PID The process ID of the process which holds the lock.
TYPE The type of lock; can be FLOCK (created with flock(2)), POSIX
(created with fcntl(2) and lockf(3)) or OFDLCK (created with
fcntl(2).
SIZE Size of the locked file.
MODE The lock's access permissions (read, write). If the process
is blocked and waiting for the lock, then the mode is
postfixed with an '*' (asterisk).
M Whether the lock is mandatory; 0 means no (meaning the lock is
only advisory), 1 means yes. (See fcntl(2).)
START Relative byte offset of the lock.
END Ending offset of the lock.
PATH Full path of the lock. If none is found, or there are no
permissions to read the path, it will fall back to the
device's mountpoint and "..." is appended to the path. The
path might be truncated; use --notruncate to get the full
path.
BLOCKER
The PID of the process which blocks the lock.
The lslocks command is meant to replace the lslk(8) command,
originally written by Victor A. Abell <abe@purdue.edu> and unmaintained
since 2001.
Davidlohr Bueso <dave@gnu.org>
flock(1), fcntl(2), lockf(3)
The lslocks command is part of the util-linux package and is
available from https://www.kernel.org/pub/linux/utils/util-linux/.
This page is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2018-02-02. (At that time, the date of the most recent commit that
was found in the repository was 2018-02-01.) If you discover any
rendering problems in this HTML version of the page, or you believe
there is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
util-linux December 2014 LSLOCKS(8)
Pages that refer to this page: fcntl(2), flock(2), proc(5)
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