.\" Copyright 1999 Andreas Dilger (adilger@enel.ucalgary.ca) .\" .\" %Begin-Header% .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, and the entire permission notice in its entirety, .\" including the disclaimer of warranties. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. The name of the author may not be used to endorse or promote .\" products derived from this software without specific prior .\" written permission. .\" .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED .\" WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF .\" WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE .\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT .\" OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR .\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF .\" LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE .\" USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH .\" DAMAGE. .\" %End-Header% .\" .\" Created Wed Mar 10 17:42:12 1999, Andreas Dilger .TH UUID_IS_NULL 3 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@" .SH NAME uuid_is_null \- compare the value of the UUID to the NULL value .SH SYNOPSIS .nf .B #include <uuid/uuid.h> .sp .BI "int uuid_is_null(uuid_t " uu ); .fi .SH DESCRIPTION The .B uuid_is_null function compares the value of the supplied UUID variable .I uu to the NULL value. If the value is equal to the NULL UUID, 1 is returned, otherwise 0 is returned. .SH AUTHOR Theodore Y. Ts'o .SH AVAILABILITY .UR http://e2fsprogs.sourceforge.net/ http://e2fsprogs.sourceforge.net/ .UE .SH "SEE ALSO" .BR uuid (3), .BR uuid_clear (3), .BR uuid_compare (3), .BR uuid_copy (3), .BR uuid_generate (3), .BR uuid_time (3), .BR uuid_parse (3), .BR uuid_unparse (3)