62 lines
1.7 KiB
Groff
62 lines
1.7 KiB
Groff
.\" $OpenBSD: isduid.3,v 1.4 2022/03/31 17:27:18 naddy Exp $
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.\"
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.\" * Copyright (c) Joel Sing <jsing@openbsd.org>
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd $Mdocdate: March 31 2022 $
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.Dt ISDUID 3
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.Os
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.Sh NAME
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.Nm isduid
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.Nd disklabel UID test
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.Sh SYNOPSIS
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.In util.h
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.Ft int
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.Fn isduid "char *duid" "int dflags"
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.Sh DESCRIPTION
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The
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.Fn isduid
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function tests the string
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.Fa duid
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to see if it is a valid
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.Xr disklabel 8
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UID.
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The
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.Fa dflags
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are specified using the same flags as used by
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.Xr opendev 3 .
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.Pp
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If the OPENDEV_PART flag is included in
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.Fa dflags ,
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the disklabel UID must consist of a 16-character hexadecimal string.
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Otherwise the disklabel UID must consist of a 16-character hexadecimal string
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followed by a
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.Sq \&.
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and a partition letter.
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.Sh RETURN VALUES
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The
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.Fn isduid
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function returns non-zero if
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.Fa duid
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is a valid DUID, otherwise zero is returned.
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.Sh SEE ALSO
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.Xr opendev 3 ,
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.Xr disklabel 5 ,
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.Xr disklabel 8
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.Sh HISTORY
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The
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.Fn isduid
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function first appeared in
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.Ox 4.9 .
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