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author | alfred <alfred@FreeBSD.org> | 2001-07-10 07:25:18 +0000 |
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committer | alfred <alfred@FreeBSD.org> | 2001-07-10 07:25:18 +0000 |
commit | 7bc467bb9ba51e8ea01ab09a4657756bfeedbd2a (patch) | |
tree | d6bdbdbc6a8a972ca9dc4eba19270130c8f3346e /share/man/man9/vn_isdisk.9 | |
parent | 4596097b70af0148c360786f817b05073b8de5ce (diff) | |
download | FreeBSD-src-7bc467bb9ba51e8ea01ab09a4657756bfeedbd2a.zip FreeBSD-src-7bc467bb9ba51e8ea01ab09a4657756bfeedbd2a.tar.gz |
Document some of the dev_t related APIs.
Submitted by: Chad David <davidc@acns.ab.ca>
Diffstat (limited to 'share/man/man9/vn_isdisk.9')
-rw-r--r-- | share/man/man9/vn_isdisk.9 | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/share/man/man9/vn_isdisk.9 b/share/man/man9/vn_isdisk.9 new file mode 100644 index 0000000..c0953cc --- /dev/null +++ b/share/man/man9/vn_isdisk.9 @@ -0,0 +1,63 @@ +.\" +.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved. +.\" +.\" 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(s), this list of conditions and the following disclaimer as +.\" the first lines of this file unmodified other than the possible +.\" addition of one or more copyright notices. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice(s), this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY +.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +.\" DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) 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 ADVISED OF THE POSSIBILITY OF SUCH +.\" DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd July 9, 2001 +.Dt VN_ISDISK 9 +.Os +.Sh NAME +.Nm vn_isdisk +.Nd "Checks if the vnode represents a disk" +.Sh SYNOPSIS +.Fd #include <sys/vnode.h> +.Ft int +.Fo vn_isdisk +.Fa "struct vnode *vp" +.Fa "int *errp" +.Fc +.Sh DESCRIPTION +The +.Nm +function checks to see if the vnode represents a disk. +In order for the vnode to be a disk it must be a character +device, v_rdev must be valid, and the cdevsw entrys flags +must have D_DISK set. +.Pp +Its arguments are: +.Bl -tag errp +.It Ar vp +The vnode to check. +.It Ar errp +A integer pointer to store the error number in if the call fails. +.El +.Sh RETURN VALUES +If the vnode represents a disk one is returned; otherwise, zero +is returned and +.Ar errp +will contain the error number. +.Sh AUTHORS +This man page was written by Chad David. |