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Teach the OSF/1 emulation layer a little more about mandatory access

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control: perform checks during OSF/1 statfs()-related calls by
invoking mac_check_mount_stat().

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
This commit is contained in:
Robert Watson 2002-08-12 01:16:55 +00:00
parent 9b63136347
commit 34a762e335
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=101705
1 changed files with 19 additions and 0 deletions
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19
sys/alpha/osf1/osf1_mount.c
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@ -32,6 +32,7 @@
* $FreeBSD$
*/
#include "opt_mac.h"
#include "opt_nfs.h"
#include <sys/param.h>
@ -42,6 +43,7 @@
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/vnode.h>
#include <sys/mac.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/proc.h>
@ -131,6 +133,11 @@ osf1_statfs(td, uap)
mp = nd.ni_vp->v_mount;
sp = &mp->mnt_stat;
vrele(nd.ni_vp);
#ifdef MAC
error = mac_check_mount_stat(td->td_proc->p_ucred, mp);
if (error)
return (error);
#endif
if ((error = VFS_STATFS(mp, sp, td)))
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
@ -153,6 +160,13 @@ osf1_fstatfs(td, uap)
if ((error = getvnode(td->td_proc->p_fd, SCARG(uap, fd), &fp)))
return (error);
mp = ((struct vnode *)fp->f_data)->v_mount;
#ifdef MAC
error = mac_check_mount_stat(td->td_proc->p_ucred, mp);
if (error) {
fdrop(fp, td);
return (error);
}
#endif
sp = &mp->mnt_stat;
error = VFS_STATFS(mp, sp, td);
fdrop(fp, td);
@ -183,6 +197,11 @@ osf1_getfsstat(td, uap)
for (count = 0, mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
nmp = TAILQ_NEXT(mp, mnt_list);
if (osf_sfsp && count < maxcount) {
#ifdef MAC
error = mac_check_mount_stat(td->td_proc->p_ucred, mp);
if (error)
continue;
#endif
sp = &mp->mnt_stat;
/*
* If OSF1_MNT_NOWAIT is specified, do not refresh the