mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-16 10:20:30 +00:00
74 lines
2.3 KiB
Groff
74 lines
2.3 KiB
Groff
.\"
|
|
.\" Copyright (c) 2004 Alfred Perlstein
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 April 2, 2004
|
|
.Dt VFS_SUSER 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm vfs_suser
|
|
.Nd check if credentials have superuser privileges for a mount point
|
|
.Sh SYNOPSIS
|
|
.In sys/param.h
|
|
.In sys/systm.h
|
|
.In sys/mount.h
|
|
.Ft int
|
|
.Fn vfs_suser "struct mount *mp" "struct thread *td"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn vfs_suser
|
|
function checks if the credentials given include superuser powers
|
|
for the given mount point.
|
|
It will check to see if the thread
|
|
passed in has the same credentials as the user that mounted the
|
|
file system.
|
|
If so, it returns 0, otherwise it returns what
|
|
.Xr suser 9
|
|
would have returned.
|
|
.Sh RETURN VALUES
|
|
The
|
|
.Fn vfs_suser
|
|
function returns 0 if the user has superuser powers and
|
|
.Er EPERM
|
|
otherwise.
|
|
This is the
|
|
.Em reverse logic
|
|
of some other implementations of
|
|
.Fn suser
|
|
in which a TRUE response indicates superuser powers.
|
|
.Sh SEE ALSO
|
|
.Xr chroot 2 ,
|
|
.Xr jail 2 ,
|
|
.Xr suser 9
|
|
.Sh HISTORY
|
|
The
|
|
.Fn vfs_suser
|
|
function was introduced in
|
|
.Fx 5.2 .
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Alfred Perlstein .
|