193 lines
6.1 KiB
C
193 lines
6.1 KiB
C
/* $NetBSD: umap_subr.c,v 1.17 2001/06/07 13:44:49 wiz Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1999 National Aeronautics & Space Administration
|
|
* All rights reserved.
|
|
*
|
|
* This software was written by William Studenmund of the
|
|
* Numerical Aerospace Simulation Facility, NASA Ames Research Center.
|
|
*
|
|
* 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 National Aeronautics & Space Administration
|
|
* 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 NATIONAL AERONAUTICS & SPACE ADMINISTRATION
|
|
* ``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 ADMINISTRATION OR CONTRIB-
|
|
* UTORS 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.
|
|
*/
|
|
/*
|
|
* Copyright (c) 1992, 1993, 1995
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software donated to Berkeley by
|
|
* Jan-Simon Pendry.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 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.
|
|
*
|
|
* from: Id: lofs_subr.c, v 1.11 1992/05/30 10:05:43 jsp Exp
|
|
* @(#)umap_subr.c 8.9 (Berkeley) 5/14/95
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/malloc.h>
|
|
#include <miscfs/specfs/specdev.h>
|
|
#include <miscfs/umapfs/umap.h>
|
|
|
|
u_long umap_findid __P((u_long, u_long [][2], int));
|
|
int umap_node_alloc __P((struct mount *, struct vnode *,
|
|
struct vnode **));
|
|
|
|
/*
|
|
* umap_findid is called by various routines in umap_vnodeops.c to
|
|
* find a user or group id in a map.
|
|
*/
|
|
u_long
|
|
umap_findid(id, map, nentries)
|
|
u_long id;
|
|
u_long map[][2];
|
|
int nentries;
|
|
{
|
|
int i;
|
|
|
|
/* Find uid entry in map */
|
|
i = 0;
|
|
while ((i<nentries) && ((map[i][0]) != id))
|
|
i++;
|
|
|
|
if (i < nentries)
|
|
return (map[i][1]);
|
|
else
|
|
return (-1);
|
|
|
|
}
|
|
|
|
/*
|
|
* umap_reverse_findid is called by umap_getattr() in umap_vnodeops.c to
|
|
* find a user or group id in a map, in reverse.
|
|
*/
|
|
u_long
|
|
umap_reverse_findid(id, map, nentries)
|
|
u_long id;
|
|
u_long map[][2];
|
|
int nentries;
|
|
{
|
|
int i;
|
|
|
|
/* Find uid entry in map */
|
|
i = 0;
|
|
while ((i<nentries) && ((map[i][1]) != id))
|
|
i++;
|
|
|
|
if (i < nentries)
|
|
return (map[i][0]);
|
|
else
|
|
return (-1);
|
|
|
|
}
|
|
|
|
/* umap_mapids maps all of the ids in a credential, both user and group. */
|
|
|
|
void
|
|
umap_mapids(v_mount, credp)
|
|
struct mount *v_mount;
|
|
struct ucred *credp;
|
|
{
|
|
int i, unentries, gnentries;
|
|
uid_t uid;
|
|
gid_t gid;
|
|
u_long (*usermap)[2], (*groupmap)[2];
|
|
|
|
if (credp == NOCRED)
|
|
return;
|
|
|
|
unentries = MOUNTTOUMAPMOUNT(v_mount)->info_nentries;
|
|
usermap = MOUNTTOUMAPMOUNT(v_mount)->info_mapdata;
|
|
gnentries = MOUNTTOUMAPMOUNT(v_mount)->info_gnentries;
|
|
groupmap = MOUNTTOUMAPMOUNT(v_mount)->info_gmapdata;
|
|
|
|
/* Find uid entry in map */
|
|
|
|
uid = (uid_t) umap_findid(credp->cr_uid, usermap, unentries);
|
|
|
|
if (uid != -1)
|
|
credp->cr_uid = uid;
|
|
else
|
|
credp->cr_uid = (uid_t) NOBODY;
|
|
|
|
#if 1
|
|
/* cr_gid is the same as cr_groups[0] in 4BSD, but not in NetBSD */
|
|
|
|
/* Find gid entry in map */
|
|
|
|
gid = (gid_t) umap_findid(credp->cr_gid, groupmap, gnentries);
|
|
|
|
if (gid != -1)
|
|
credp->cr_gid = gid;
|
|
else
|
|
credp->cr_gid = NULLGROUP;
|
|
#endif
|
|
|
|
/* Now we must map each of the set of groups in the cr_groups
|
|
structure. */
|
|
|
|
for(i=0; i < credp->cr_ngroups; i++) {
|
|
gid = (gid_t) umap_findid(credp->cr_groups[i],
|
|
groupmap, gnentries);
|
|
|
|
if (gid != -1)
|
|
credp->cr_groups[i] = gid;
|
|
else
|
|
credp->cr_groups[i] = NULLGROUP;
|
|
}
|
|
}
|