LSLOCKS(8)		     System Administration		    LSLOCKS(8)



NAME
       lslocks - list local system locks

SYNOPSIS
       lslocks [options]


DESCRIPTION
       lslocks	lists information about all the currently held file locks in a
       Linux system.


OPTIONS
       -h, --help
	      Print a help text and exit.

       -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.


OUTPUT
       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)) or	 POSIX
	      (created with fcntl(2) and lockf(3)).


       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  per-
	      missions	to  read  the  path, it will fall back to the device's
	      mountpoint.  The path might be truncated;	 use  --notruncate  to
	      get the full path.


       BLOCKER
	      The PID of the process which blocks the lock.


NOTES
       The lslocks command is meant to replace the lslk(8) command, originally written by
       Victor A. Abell <abe@purdue.edu> and unmaintained since 2001.


AUTHORS
       Davidlohr Bueso <dave@gnu.org>


SEE ALSO
       flock(1), fcntl(2), lockf(2)


AVAILABILITY
       The  lslocks command is part of the util-linux package and is available
       from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.



util-linux			 February 2012			    LSLOCKS(8)