This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
122 lines
3.7 KiB
Groff
122 lines
3.7 KiB
Groff
.\" $NetBSD: getfh.2,v 1.21 2006/10/30 18:53:42 mjf Exp $
|
|
.\"
|
|
.\" 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.
|
|
.\" 3. 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
|
|
.\"
|
|
.Dd October 30, 2006
|
|
.Dt GETFH 2
|
|
.Os
|
|
.Sh NAME
|
|
.Nm getfh
|
|
.Nd get file handle
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In sys/types.h
|
|
.In sys/mount.h
|
|
.Ft int
|
|
.Fn getfh "const char *path" "void *fhp" "size_t *fh_size"
|
|
.Sh DESCRIPTION
|
|
.Fn getfh
|
|
returns a file handle for the specified file or directory
|
|
in the file handle pointed to by
|
|
.Fa fhp .
|
|
The variable pointed to by
|
|
.Fa fh_size
|
|
has to be initialized to the memory allocated for the variable sized file
|
|
handle.
|
|
On return the value will be replaced by the actual size
|
|
needed (which will vary depending on the file system the path is on).
|
|
This system call is restricted to the superuser.
|
|
To query the necessary size for the filehandle, a
|
|
.Dv NULL
|
|
pointer may
|
|
be passed as
|
|
.Fa fhp ,
|
|
and the value pointed to by
|
|
.Fa fh_size
|
|
should be initialized to zero.
|
|
.Sh RETURN VALUES
|
|
Upon successful completion, a value of 0 is returned.
|
|
Otherwise, \-1 is returned and the global variable
|
|
.Va errno
|
|
is set to indicate the error.
|
|
.Sh ERRORS
|
|
.Fn getfh
|
|
fails if one or more of the following are true:
|
|
.Bl -tag -width Er
|
|
.It Bq Er ENOTDIR
|
|
A component of the path prefix of
|
|
.Fa path
|
|
is not a directory.
|
|
.It Bq Er ENAMETOOLONG
|
|
The length of a component of
|
|
.Fa path
|
|
exceeds
|
|
.Brq Dv NAME_MAX
|
|
characters, or the length of
|
|
.Fa path
|
|
exceeds
|
|
.Brq Dv PATH_MAX
|
|
characters.
|
|
.It Bq Er ENOENT
|
|
The file referred to by
|
|
.Fa path
|
|
does not exist.
|
|
.It Bq Er EACCES
|
|
Search permission is denied for a component of the path prefix of
|
|
.Fa path .
|
|
.It Bq Er ELOOP
|
|
Too many symbolic links were encountered in translating
|
|
.Fa path .
|
|
.It Bq Er EFAULT
|
|
.Fa fhp
|
|
points to an invalid address.
|
|
.It Bq Er EIO
|
|
An
|
|
.Tn I/O
|
|
error occurred while reading from or writing to the file system.
|
|
.It Bq Er E2BIG
|
|
The memory allocated for the file handle is too small.
|
|
The size needed has been written to the variable pointed to by
|
|
.Fa fh_size .
|
|
.It Bq Er ENOMEM
|
|
The kernel failed to allocate temporary memory to create a filehandle of the
|
|
requested size.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr fhstat 2 ,
|
|
.Xr fhstatvfs 2 ,
|
|
.Xr fhstatvfs1 2
|
|
.Sh HISTORY
|
|
The
|
|
.Fn getfh
|
|
function
|
|
first appeared in
|
|
.Bx 4.4 .
|