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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

   -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.

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
          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.

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/.



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