7e6cabd06e
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
116 lines
3.2 KiB
Groff
116 lines
3.2 KiB
Groff
.\" Copyright (c) 1989, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)getfh.2 8.1 (Berkeley) 6/9/93
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.\" $FreeBSD$
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.\"
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.Dd April 14, 2011
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.Dt GETFH 2
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.Os
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.Sh NAME
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.Nm getfh ,
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.Nm lgetfh
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.Nd get file handle
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sys/param.h
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.In sys/mount.h
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.Ft int
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.Fn getfh "const char *path" "fhandle_t *fhp"
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.Ft int
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.Fn lgetfh "const char *path" "fhandle_t *fhp"
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.Sh DESCRIPTION
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The
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.Fn getfh
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system call
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returns a file handle for the specified file or directory
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in the file handle pointed to by
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.Fa fhp .
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The
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.Fn lgetfh
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system call is like
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.Fn getfh
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except in the case where the named file is a symbolic link,
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in which case
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.Fn lgetfh
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returns information about the link,
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while
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.Fn getfh
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returns information about the file the link references.
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These system calls are restricted to the superuser.
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.Sh RETURN VALUES
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.Rv -std
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.Sh ERRORS
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The
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.Fn getfh
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and
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.Fn lgetfh
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system calls
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fail if one or more of the following are true:
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.Bl -tag -width Er
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.It Bq Er ENOTDIR
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A component of the path prefix of
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.Fa path
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is not a directory.
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.It Bq Er ENAMETOOLONG
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The length of a component of
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.Fa path
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exceeds 255 characters,
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or the length of
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.Fa path
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exceeds 1023 characters.
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.It Bq Er ENOENT
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The file referred to by
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.Fa path
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does not exist.
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.It Bq Er EACCES
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Search permission is denied for a component of the path prefix of
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.Fa path .
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.It Bq Er ELOOP
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Too many symbolic links were encountered in translating
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.Fa path .
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.It Bq Er EFAULT
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The
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.Fa fhp
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argument
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points to an invalid address.
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.It Bq Er EIO
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An
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.Tn I/O
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error occurred while reading from or writing to the file system.
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.El
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.Sh SEE ALSO
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.Xr fhopen 2 ,
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.Xr open 2 ,
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.Xr stat 2
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.Sh HISTORY
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The
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.Fn getfh
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system call first appeared in
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.Bx 4.4 .
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