freebsd-skq/lib/libc/sys/getfh.2

112 lines
3.1 KiB
Groff
Raw Normal View History

1994-05-27 05:00:24 +00:00
.\" Copyright (c) 1989, 1991, 1993
.\" The Regents of the University of California. 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, this list of conditions and the following disclaimer.
.\" 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.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
.\"
.\" @(#)getfh.2 8.1 (Berkeley) 6/9/93
1999-08-28 00:22:10 +00:00
.\" $FreeBSD$
1994-05-27 05:00:24 +00:00
.\"
2004-04-06 09:06:45 +00:00
.Dd April 6, 2004
1994-05-27 05:00:24 +00:00
.Dt GETFH 2
.Os
.Sh NAME
2004-04-05 10:17:56 +00:00
.Nm getfh ,
.Nm lgetfh
1994-05-27 05:00:24 +00:00
.Nd get file handle
.Sh LIBRARY
.Lb libc
1994-05-27 05:00:24 +00:00
.Sh SYNOPSIS
.In sys/param.h
.In sys/mount.h
1994-05-27 05:00:24 +00:00
.Ft int
.Fn getfh "const char *path" "fhandle_t *fhp"
2004-04-05 10:17:56 +00:00
.Ft int
.Fn lgetfh "const char *path" "fhandle_t *fhp"
1994-05-27 05:00:24 +00:00
.Sh DESCRIPTION
The
.Fn getfh
system call
1994-05-27 05:00:24 +00:00
returns a file handle for the specified file or directory
in the file handle pointed to by
.Fa fhp .
2004-04-05 10:17:56 +00:00
The
.Fn lgetfh
system call is like
.Fn getfh
except in the case where the named file is a symbolic link,
in which case
.Fn lgetfh
returns information about the link,
while
.Fn getfh
returns information about the file the link references.
These system calls are restricted to the superuser.
1994-05-27 05:00:24 +00:00
.Sh RETURN VALUES
2004-04-05 10:17:56 +00:00
.Rv -std
1994-05-27 05:00:24 +00:00
.Sh ERRORS
The
.Fn getfh
2004-04-05 10:17:56 +00:00
and
.Fn lgetfgh
system calls
fail if one or more of the following are true:
1994-05-27 05:00:24 +00:00
.Bl -tag -width Er
.It Bq Er ENOTDIR
1994-05-27 05:00:24 +00:00
A component of the path prefix of
.Fa path
is not a directory.
.It Bq Er ENAMETOOLONG
1994-05-27 05:00:24 +00:00
The length of a component of
.Fa path
exceeds 255 characters,
or the length of
.Fa path
exceeds 1023 characters.
.It Bq Er ENOENT
1994-05-27 05:00:24 +00:00
The file referred to by
.Fa path
does not exist.
.It Bq Er EACCES
1994-05-27 05:00:24 +00:00
Search permission is denied for a component of the path prefix of
.Fa path .
.It Bq Er ELOOP
1994-05-27 05:00:24 +00:00
Too many symbolic links were encountered in translating
.Fa path .
.It Bq Er EFAULT
2002-12-19 09:40:28 +00:00
The
.Fa fhp
argument
1994-05-27 05:00:24 +00:00
points to an invalid address.
.It Bq Er EIO
1994-05-27 05:00:24 +00:00
An
.Tn I/O
error occurred while reading from or writing to the file system.
.El
.Sh HISTORY
The
.Fn getfh
system call first appeared in
.Bx 4.4 .