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| -rw-r--r-- | misc-utils/lslocks.8 | 108 |
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diff --git a/misc-utils/lslocks.8 b/misc-utils/lslocks.8 new file mode 100644 index 0000000..40b2ceb --- /dev/null +++ b/misc-utils/lslocks.8 @@ -0,0 +1,108 @@ +.\" Man page for the lslocks command. +.\" Copyright 2012 Davidlohr Bueso <dave@gnu.org> +.\" May be distributed under the GNU General Public License + +.TH LSLOCKS 8 "December 2014" "util-linux" "System Administration" +.SH NAME +lslocks \- list local system locks +.SH SYNOPSIS +.B lslocks +[options] + +.SH DESCRIPTION +.B lslocks +lists information about all the currently held file locks in a Linux system. +.sp +Note that lslocks also lists OFD (Open File Description) locks, these locks are +not associated with any process (PID is -1). OFD locks are associated with the +open file description on which they are acquired. This lock type is available +since Linux 3.15, see \fBfcntl\fR(2) for more details. + +.SH OPTIONS +.TP +.BR \-b , " \-\-bytes" +Print the SIZE column in bytes rather than in a human-readable format. +.TP +.BR \-i , " \-\-noinaccessible" +Ignore lock files which are inaccessible for the current user. +.TP +.BR \-J , " \-\-json" +Use JSON output format. +.TP +.BR \-n , " \-\-noheadings" +Do not print a header line. +.TP +.BR \-o , " \-\-output " \fIlist\fP +Specify which output columns to print. Use +.B "--help" +to get a list of all supported columns. + +The default list of columns may be extended if \fIlist\fP is +specified in the format \fI+list\fP (e.g. \fBlslocks -o +BLOCKER\fP). +.TP +.B \-\-output\-all +Output all available columns. +.TP +.BR \-p , " \-\-pid " \fIpid\fP +Display only the locks held by the process with this \fIpid\fR. +.TP +.BR \-r , " \-\-raw" +Use the raw output format. +.TP +.BR \-u , " \-\-notruncate" +Do not truncate text in columns. +.TP +.BR \-V , " \-\-version" +Display version information and exit. +.TP +.BR \-h , " \-\-help" +Display help text and exit. + +.SH OUTPUT +.IP "COMMAND" +The command name of the process holding the lock. +.IP "PID" +The process ID of the process which holds the lock or -1 for OFDLCK. +.IP "TYPE" +The type of lock; can be FLOCK (created with \fBflock\fR(2)), POSIX +(created with \fBfcntl\fR(2) and \fBlockf\fR(3)) or OFDLCK (created with fcntl(2). +.IP "SIZE" +Size of the locked file. +.IP "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). +.IP "M" +Whether the lock is mandatory; 0 means no (meaning the lock is only advisory), 1 means yes. +(See \fBfcntl\fR(2).) +.IP "START" +Relative byte offset of the lock. +.IP "END" +Ending offset of the lock. +.IP "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 +\fB\-\-notruncate\fR to get the full path. +.IP "BLOCKER" +The PID of the process which blocks the lock. + +.SH NOTES +.nf +The \fBlslocks\fR command is meant to replace the \fBlslk\fR(8) command, +originally written by Victor A. Abell <abe@purdue.edu> and unmaintained +since 2001. +.fi + +.SH AUTHORS +.nf +Davidlohr Bueso <dave@gnu.org> +.fi + +.SH "SEE ALSO" +.BR flock (1), +.BR fcntl (2), +.BR lockf (3) + +.SH AVAILABILITY +The lslocks command is part of the util-linux package and is available from +https://www.kernel.org/pub/linux/utils/util-linux/. |