c27b50f5b4
file-system aware MAC policies. Sync to MAC tree. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
780 lines
20 KiB
C
780 lines
20 KiB
C
/*-
|
|
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
|
|
* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Robert Watson for the TrustedBSD Project.
|
|
*
|
|
* This software was developed for the FreeBSD Project in part by NAI Labs,
|
|
* the Security Research Division of Network Associates, Inc. under
|
|
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
|
|
* CHATS research program.
|
|
*
|
|
* 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. The names of the authors may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
/*
|
|
* Developed by the TrustedBSD Project.
|
|
* "BSD Extended" MAC policy, allowing the administrator to impose
|
|
* mandatory rules regarding users and some system objects.
|
|
*
|
|
* XXX: Much locking support required here.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/acl.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/mac.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/file.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <net/bpfdesc.h>
|
|
#include <net/if.h>
|
|
#include <net/if_types.h>
|
|
#include <net/if_var.h>
|
|
|
|
#include <vm/vm.h>
|
|
|
|
#include <sys/mac_policy.h>
|
|
|
|
#include <security/mac_bsdextended/mac_bsdextended.h>
|
|
|
|
SYSCTL_DECL(_security_mac);
|
|
|
|
SYSCTL_NODE(_security_mac, OID_AUTO, bsdextended, CTLFLAG_RW, 0,
|
|
"TrustedBSD extended BSD MAC policy controls");
|
|
|
|
static int mac_bsdextended_enabled = 1;
|
|
SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, enabled, CTLFLAG_RW,
|
|
&mac_bsdextended_enabled, 0, "Enforce extended BSD policy");
|
|
TUNABLE_INT("security.mac.bsdextended.enabled", &mac_bsdextended_enabled);
|
|
|
|
MALLOC_DEFINE(M_MACBSDEXTENDED, "mac_bsdextended", "BSD Extended MAC rule");
|
|
|
|
#define MAC_BSDEXTENDED_MAXRULES 250
|
|
static struct mac_bsdextended_rule *rules[MAC_BSDEXTENDED_MAXRULES];
|
|
static int rule_count = 0;
|
|
static int rule_slots = 0;
|
|
|
|
SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_count, CTLFLAG_RD,
|
|
&rule_count, 0, "Number of defined rules\n");
|
|
SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_slots, CTLFLAG_RD,
|
|
&rule_slots, 0, "Number of used rule slots\n");
|
|
|
|
static int mac_bsdextended_debugging;
|
|
SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, debugging, CTLFLAG_RW,
|
|
&mac_bsdextended_debugging, 0, "Enable debugging on failure");
|
|
|
|
static int
|
|
mac_bsdextended_rule_valid(struct mac_bsdextended_rule *rule)
|
|
{
|
|
|
|
if ((rule->mbr_subject.mbi_flags | MBI_BITS) != MBI_BITS)
|
|
return (EINVAL);
|
|
|
|
if ((rule->mbr_object.mbi_flags | MBI_BITS) != MBI_BITS)
|
|
return (EINVAL);
|
|
|
|
if ((rule->mbr_mode | VALLPERM) != VALLPERM)
|
|
return (EINVAL);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
sysctl_rule(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
struct mac_bsdextended_rule temprule, *ruleptr;
|
|
u_int namelen;
|
|
int error, index, *name;
|
|
|
|
name = (int *)arg1;
|
|
namelen = arg2;
|
|
|
|
/* printf("bsdextended sysctl handler (namelen %d)\n", namelen); */
|
|
|
|
if (namelen != 1)
|
|
return (EINVAL);
|
|
|
|
index = name[0];
|
|
if (index < 0 || index > rule_slots + 1)
|
|
return (ENOENT);
|
|
if (rule_slots >= MAC_BSDEXTENDED_MAXRULES)
|
|
return (ENOENT);
|
|
|
|
if (req->oldptr) {
|
|
if (rules[index] == NULL)
|
|
return (ENOENT);
|
|
|
|
error = SYSCTL_OUT(req, rules[index], sizeof(*rules[index]));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
|
|
if (req->newptr) {
|
|
if (req->newlen == 0) {
|
|
/* printf("deletion\n"); */
|
|
ruleptr = rules[index];
|
|
if (ruleptr == NULL)
|
|
return (ENOENT);
|
|
rule_count--;
|
|
rules[index] = NULL;
|
|
FREE(ruleptr, M_MACBSDEXTENDED);
|
|
return(0);
|
|
}
|
|
error = SYSCTL_IN(req, &temprule, sizeof(temprule));
|
|
if (error)
|
|
return (error);
|
|
|
|
error = mac_bsdextended_rule_valid(&temprule);
|
|
if (error)
|
|
return (error);
|
|
|
|
if (rules[index] == NULL) {
|
|
/* printf("addition\n"); */
|
|
MALLOC(ruleptr, struct mac_bsdextended_rule *,
|
|
sizeof(*ruleptr), M_MACBSDEXTENDED, M_WAITOK |
|
|
M_ZERO);
|
|
*ruleptr = temprule;
|
|
rules[index] = ruleptr;
|
|
if (index+1 > rule_slots)
|
|
rule_slots = index+1;
|
|
rule_count++;
|
|
} else {
|
|
/* printf("replacement\n"); */
|
|
*rules[index] = temprule;
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
SYSCTL_NODE(_security_mac_bsdextended, OID_AUTO, rules,
|
|
CTLFLAG_RW, sysctl_rule, "BSD extended MAC rules");
|
|
|
|
static void
|
|
mac_bsdextended_init(struct mac_policy_conf *mpc)
|
|
{
|
|
|
|
/* Initialize ruleset lock. */
|
|
/* Register dynamic sysctl's for rules. */
|
|
}
|
|
|
|
static void
|
|
mac_bsdextended_destroy(struct mac_policy_conf *mpc)
|
|
{
|
|
|
|
/* Tear down sysctls. */
|
|
/* Destroy ruleset lock. */
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_rulecheck(struct mac_bsdextended_rule *rule,
|
|
struct ucred *cred, uid_t object_uid, gid_t object_gid, mode_t acc_mode)
|
|
{
|
|
int match;
|
|
|
|
/*
|
|
* Is there a subject match?
|
|
*/
|
|
if (rule->mbr_subject.mbi_flags & MBI_UID_DEFINED) {
|
|
match = (rule->mbr_subject.mbi_uid == cred->cr_uid ||
|
|
rule->mbr_subject.mbi_uid == cred->cr_ruid ||
|
|
rule->mbr_subject.mbi_uid == cred->cr_svuid);
|
|
|
|
if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
|
|
match = !match;
|
|
|
|
if (!match)
|
|
return (0);
|
|
}
|
|
|
|
if (rule->mbr_subject.mbi_flags & MBI_GID_DEFINED) {
|
|
match = (groupmember(rule->mbr_subject.mbi_gid, cred) ||
|
|
rule->mbr_subject.mbi_gid == cred->cr_rgid ||
|
|
rule->mbr_subject.mbi_gid == cred->cr_svgid);
|
|
|
|
if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
|
|
match = !match;
|
|
|
|
if (!match)
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Is there an object match?
|
|
*/
|
|
if (rule->mbr_object.mbi_flags & MBI_UID_DEFINED) {
|
|
match = (rule->mbr_object.mbi_uid == object_uid);
|
|
|
|
if (rule->mbr_object.mbi_flags & MBI_NEGATED)
|
|
match = !match;
|
|
|
|
if (!match)
|
|
return (0);
|
|
}
|
|
|
|
if (rule->mbr_object.mbi_flags & MBI_GID_DEFINED) {
|
|
match = (rule->mbr_object.mbi_gid == object_gid);
|
|
|
|
if (rule->mbr_object.mbi_flags & MBI_NEGATED)
|
|
match = !match;
|
|
|
|
if (!match)
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Is the access permitted?
|
|
*/
|
|
if ((rule->mbr_mode & acc_mode) != acc_mode) {
|
|
if (mac_bsdextended_debugging)
|
|
printf("mac_bsdextended: %d:%d request %d on %d:%d"
|
|
" fails\n", cred->cr_ruid, cred->cr_rgid,
|
|
acc_mode, object_uid, object_gid);
|
|
return (EACCES);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check(struct ucred *cred, uid_t object_uid, gid_t object_gid,
|
|
mode_t acc_mode)
|
|
{
|
|
int error, i;
|
|
|
|
for (i = 0; i < rule_slots; i++) {
|
|
if (rules[i] == NULL)
|
|
continue;
|
|
|
|
error = mac_bsdextended_rulecheck(rules[i], cred, object_uid,
|
|
object_gid, acc_mode);
|
|
if (error)
|
|
return (error);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_access(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, mode_t flags)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, flags));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_chdir(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_chroot(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_create_vnode(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct componentname *cnp, struct vattr *vap)
|
|
{
|
|
struct vattr dvap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &dvap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, dvap.va_uid, dvap.va_gid, VWRITE));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct vnode *vp, struct label *label,
|
|
struct componentname *cnp)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, acl_type_t type)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_exec(struct ucred *cred, struct vnode *vp,
|
|
struct label *label)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
|
|
VREAD|VEXEC));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, acl_type_t type)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VSTAT));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, int attrnamespace, const char *name, struct uio *uio)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_link(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct vnode *vp, struct label *label,
|
|
struct componentname *cnp)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
|
if (error)
|
|
return (error);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct componentname *cnp)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_open(struct ucred *cred, struct vnode *vp,
|
|
struct label *filelabel, mode_t acc_mode)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, acc_mode));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_readdir(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_readdlink(struct ucred *cred, struct vnode *vp,
|
|
struct label *label)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct vnode *vp, struct label *label,
|
|
struct componentname *cnp)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
|
if (error)
|
|
return (error);
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct vnode *vp, struct label *label, int samedir,
|
|
struct componentname *cnp)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
|
if (error)
|
|
return (error);
|
|
|
|
if (vp != NULL) {
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
|
|
VWRITE);
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_revoke(struct ucred *cred, struct vnode *vp,
|
|
struct label *label)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_setacl_vnode(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, acl_type_t type, struct acl *acl)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, int attrnamespace, const char *name, struct uio *uio)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, u_long flags)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, mode_t mode)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, uid_t uid, gid_t gid)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, struct timespec atime, struct timespec utime)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
|
}
|
|
|
|
static int
|
|
mac_bsdextended_check_vnode_stat(struct ucred *active_cred,
|
|
struct ucred *file_cred, struct vnode *vp, struct label *label)
|
|
{
|
|
struct vattr vap;
|
|
int error;
|
|
|
|
if (!mac_bsdextended_enabled)
|
|
return (0);
|
|
|
|
error = VOP_GETATTR(vp, &vap, active_cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
return (mac_bsdextended_check(active_cred, vap.va_uid, vap.va_gid,
|
|
VSTAT));
|
|
}
|
|
|
|
static struct mac_policy_op_entry mac_bsdextended_ops[] =
|
|
{
|
|
{ MAC_DESTROY,
|
|
(macop_t)mac_bsdextended_destroy },
|
|
{ MAC_INIT,
|
|
(macop_t)mac_bsdextended_init },
|
|
{ MAC_CHECK_VNODE_ACCESS,
|
|
(macop_t)mac_bsdextended_check_vnode_access },
|
|
{ MAC_CHECK_VNODE_CHDIR,
|
|
(macop_t)mac_bsdextended_check_vnode_chdir },
|
|
{ MAC_CHECK_VNODE_CHROOT,
|
|
(macop_t)mac_bsdextended_check_vnode_chroot },
|
|
{ MAC_CHECK_VNODE_CREATE,
|
|
(macop_t)mac_bsdextended_check_create_vnode },
|
|
{ MAC_CHECK_VNODE_DELETE,
|
|
(macop_t)mac_bsdextended_check_vnode_delete },
|
|
{ MAC_CHECK_VNODE_DELETEACL,
|
|
(macop_t)mac_bsdextended_check_vnode_deleteacl },
|
|
{ MAC_CHECK_VNODE_EXEC,
|
|
(macop_t)mac_bsdextended_check_vnode_exec },
|
|
{ MAC_CHECK_VNODE_GETACL,
|
|
(macop_t)mac_bsdextended_check_vnode_getacl },
|
|
{ MAC_CHECK_VNODE_GETEXTATTR,
|
|
(macop_t)mac_bsdextended_check_vnode_getextattr },
|
|
{ MAC_CHECK_VNODE_LINK,
|
|
(macop_t)mac_bsdextended_check_vnode_link },
|
|
{ MAC_CHECK_VNODE_LOOKUP,
|
|
(macop_t)mac_bsdextended_check_vnode_lookup },
|
|
{ MAC_CHECK_VNODE_OPEN,
|
|
(macop_t)mac_bsdextended_check_vnode_open },
|
|
{ MAC_CHECK_VNODE_READDIR,
|
|
(macop_t)mac_bsdextended_check_vnode_readdir },
|
|
{ MAC_CHECK_VNODE_READLINK,
|
|
(macop_t)mac_bsdextended_check_vnode_readdlink },
|
|
{ MAC_CHECK_VNODE_RENAME_FROM,
|
|
(macop_t)mac_bsdextended_check_vnode_rename_from },
|
|
{ MAC_CHECK_VNODE_RENAME_TO,
|
|
(macop_t)mac_bsdextended_check_vnode_rename_to },
|
|
{ MAC_CHECK_VNODE_REVOKE,
|
|
(macop_t)mac_bsdextended_check_vnode_revoke },
|
|
{ MAC_CHECK_VNODE_SETACL,
|
|
(macop_t)mac_bsdextended_check_setacl_vnode },
|
|
{ MAC_CHECK_VNODE_SETEXTATTR,
|
|
(macop_t)mac_bsdextended_check_vnode_setextattr },
|
|
{ MAC_CHECK_VNODE_SETFLAGS,
|
|
(macop_t)mac_bsdextended_check_vnode_setflags },
|
|
{ MAC_CHECK_VNODE_SETMODE,
|
|
(macop_t)mac_bsdextended_check_vnode_setmode },
|
|
{ MAC_CHECK_VNODE_SETOWNER,
|
|
(macop_t)mac_bsdextended_check_vnode_setowner },
|
|
{ MAC_CHECK_VNODE_SETUTIMES,
|
|
(macop_t)mac_bsdextended_check_vnode_setutimes },
|
|
{ MAC_CHECK_VNODE_STAT,
|
|
(macop_t)mac_bsdextended_check_vnode_stat },
|
|
{ MAC_OP_LAST, NULL }
|
|
};
|
|
|
|
MAC_POLICY_SET(mac_bsdextended_ops, trustedbsd_mac_bsdextended,
|
|
"TrustedBSD MAC/BSD Extended", MPC_LOADTIME_FLAG_UNLOADOK, NULL);
|