1.\" $OpenBSD: isduid.3,v 1.1 2010/11/17 10:10:31 jsing Exp $ 2.\" 3.\" * Copyright (c) Joel Sing <jsing@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: November 17 2010 $ 18.Dt ISDUID 3 19.Os 20.Sh NAME 21.Nm isduid 22.Nd disklabel UID test 23.Sh SYNOPSIS 24.Fd #include <util.h> 25.Ft int 26.Fn isduid "char *duid" "int dflags" 27.Sh DESCRIPTION 28The 29.Fn isduid 30function tests the string 31.Fa duid 32to see if it is a valid 33.Xr disklabel 8 34UID. 35The 36.Fa dflags 37are specified using the same flags as used by 38.Xr opendev 3 . 39.Pp 40If the OPENDEV_PART flag is included in 41.Fa dflags 42the disklabel UID must consist of a 16-character hexadecimal string. 43Otherwise the disklabel UID must consist of a 16-character hexidecimal string 44followed by a 45.Sq \&. 46and a partition letter. 47.Sh RETURN VALUES 48The 49.Fn isduid 50function returns non-zero if 51.Fa duid 52is a valid DUID, otherwise zero is returned. 53.Sh SEE ALSO 54.Xr opendev 3 , 55.Xr disklabel 5 , 56.Xr disklabel 8 57.Sh HISTORY 58The 59.Fn isduid 60function first appeared in 61.Ox 4.9 . 62