17bc82500SRobert Watson /*- 27bc82500SRobert Watson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 37bc82500SRobert Watson * Copyright (c) 2001 Ilmar S. Habibulin 47bc82500SRobert Watson * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 57bc82500SRobert Watson * All rights reserved. 67bc82500SRobert Watson * 77bc82500SRobert Watson * This software was developed by Robert Watson and Ilmar Habibulin for the 87bc82500SRobert Watson * TrustedBSD Project. 97bc82500SRobert Watson * 107bc82500SRobert Watson * This software was developed for the FreeBSD Project in part by NAI Labs, 117bc82500SRobert Watson * the Security Research Division of Network Associates, Inc. under 127bc82500SRobert Watson * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 137bc82500SRobert Watson * CHATS research program. 147bc82500SRobert Watson * 157bc82500SRobert Watson * Redistribution and use in source and binary forms, with or without 167bc82500SRobert Watson * modification, are permitted provided that the following conditions 177bc82500SRobert Watson * are met: 187bc82500SRobert Watson * 1. Redistributions of source code must retain the above copyright 197bc82500SRobert Watson * notice, this list of conditions and the following disclaimer. 207bc82500SRobert Watson * 2. Redistributions in binary form must reproduce the above copyright 217bc82500SRobert Watson * notice, this list of conditions and the following disclaimer in the 227bc82500SRobert Watson * documentation and/or other materials provided with the distribution. 237bc82500SRobert Watson * 3. The names of the authors may not be used to endorse or promote 247bc82500SRobert Watson * products derived from this software without specific prior written 257bc82500SRobert Watson * permission. 267bc82500SRobert Watson * 277bc82500SRobert Watson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 287bc82500SRobert Watson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 297bc82500SRobert Watson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 307bc82500SRobert Watson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 317bc82500SRobert Watson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 327bc82500SRobert Watson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 337bc82500SRobert Watson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 347bc82500SRobert Watson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 357bc82500SRobert Watson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 367bc82500SRobert Watson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 377bc82500SRobert Watson * SUCH DAMAGE. 387bc82500SRobert Watson * 397bc82500SRobert Watson * $FreeBSD$ 407bc82500SRobert Watson */ 417bc82500SRobert Watson /* 427bc82500SRobert Watson * Developed by the TrustedBSD Project. 437bc82500SRobert Watson * 447bc82500SRobert Watson * Framework for extensible kernel access control. Kernel and userland 457bc82500SRobert Watson * interface to the framework, policy registration and composition. 467bc82500SRobert Watson */ 477bc82500SRobert Watson 487bc82500SRobert Watson #include "opt_mac.h" 49328048bcSPoul-Henning Kamp #include "opt_devfs.h" 50f9d0d524SRobert Watson 517bc82500SRobert Watson #include <sys/param.h> 5295fab37eSRobert Watson #include <sys/extattr.h> 5395fab37eSRobert Watson #include <sys/kernel.h> 5495fab37eSRobert Watson #include <sys/lock.h> 55b656366bSBruce Evans #include <sys/malloc.h> 5695fab37eSRobert Watson #include <sys/mutex.h> 5795fab37eSRobert Watson #include <sys/mac.h> 587ba28492SRobert Watson #include <sys/module.h> 5995fab37eSRobert Watson #include <sys/proc.h> 6095fab37eSRobert Watson #include <sys/systm.h> 617bc82500SRobert Watson #include <sys/sysproto.h> 627bc82500SRobert Watson #include <sys/sysent.h> 6395fab37eSRobert Watson #include <sys/vnode.h> 6495fab37eSRobert Watson #include <sys/mount.h> 6595fab37eSRobert Watson #include <sys/file.h> 6695fab37eSRobert Watson #include <sys/namei.h> 6795fab37eSRobert Watson #include <sys/socket.h> 6895fab37eSRobert Watson #include <sys/pipe.h> 6995fab37eSRobert Watson #include <sys/socketvar.h> 7095fab37eSRobert Watson #include <sys/sysctl.h> 7195fab37eSRobert Watson 7295fab37eSRobert Watson #include <vm/vm.h> 7395fab37eSRobert Watson #include <vm/pmap.h> 7495fab37eSRobert Watson #include <vm/vm_map.h> 7595fab37eSRobert Watson #include <vm/vm_object.h> 7695fab37eSRobert Watson 7795fab37eSRobert Watson #include <sys/mac_policy.h> 7895fab37eSRobert Watson 7995fab37eSRobert Watson #include <fs/devfs/devfs.h> 8095fab37eSRobert Watson 8195fab37eSRobert Watson #include <net/bpfdesc.h> 8295fab37eSRobert Watson #include <net/if.h> 8395fab37eSRobert Watson #include <net/if_var.h> 8495fab37eSRobert Watson 8595fab37eSRobert Watson #include <netinet/in.h> 8695fab37eSRobert Watson #include <netinet/ip_var.h> 8795fab37eSRobert Watson 8895fab37eSRobert Watson #ifdef MAC 8995fab37eSRobert Watson 907ba28492SRobert Watson /* 917ba28492SRobert Watson * Declare that the kernel provides MAC support, version 1. This permits 927ba28492SRobert Watson * modules to refuse to be loaded if the necessary support isn't present, 937ba28492SRobert Watson * even if it's pre-boot. 947ba28492SRobert Watson */ 957ba28492SRobert Watson MODULE_VERSION(kernel_mac_support, 1); 967ba28492SRobert Watson 9795fab37eSRobert Watson SYSCTL_DECL(_security); 9895fab37eSRobert Watson 9995fab37eSRobert Watson SYSCTL_NODE(_security, OID_AUTO, mac, CTLFLAG_RW, 0, 10095fab37eSRobert Watson "TrustedBSD MAC policy controls"); 101b2f0927aSRobert Watson 10295fab37eSRobert Watson #ifndef MAC_MAX_POLICIES 10395fab37eSRobert Watson #define MAC_MAX_POLICIES 8 10495fab37eSRobert Watson #endif 10595fab37eSRobert Watson #if MAC_MAX_POLICIES > 32 10695fab37eSRobert Watson #error "MAC_MAX_POLICIES too large" 10795fab37eSRobert Watson #endif 10895fab37eSRobert Watson static unsigned int mac_max_policies = MAC_MAX_POLICIES; 10995fab37eSRobert Watson static unsigned int mac_policy_offsets_free = (1 << MAC_MAX_POLICIES) - 1; 11095fab37eSRobert Watson SYSCTL_UINT(_security_mac, OID_AUTO, max_policies, CTLFLAG_RD, 11195fab37eSRobert Watson &mac_max_policies, 0, ""); 11295fab37eSRobert Watson 11395fab37eSRobert Watson static int mac_late = 0; 11495fab37eSRobert Watson 11595fab37eSRobert Watson static int mac_enforce_fs = 1; 11695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_fs, CTLFLAG_RW, 11795fab37eSRobert Watson &mac_enforce_fs, 0, "Enforce MAC policy on file system objects"); 11895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_fs", &mac_enforce_fs); 11995fab37eSRobert Watson 12095fab37eSRobert Watson static int mac_enforce_network = 1; 12195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW, 12295fab37eSRobert Watson &mac_enforce_network, 0, "Enforce MAC policy on network packets"); 12395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_network", &mac_enforce_network); 12495fab37eSRobert Watson 125b88c98f6SRobert Watson static int mac_enforce_pipe = 1; 126b88c98f6SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_pipe, CTLFLAG_RW, 127b88c98f6SRobert Watson &mac_enforce_pipe, 0, "Enforce MAC policy on pipe operations"); 128c031391bSRobert Watson TUNABLE_INT("security.mac.enforce_pipe", &mac_enforce_pipe); 129b88c98f6SRobert Watson 13095fab37eSRobert Watson static int mac_enforce_process = 1; 13195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_process, CTLFLAG_RW, 13295fab37eSRobert Watson &mac_enforce_process, 0, "Enforce MAC policy on inter-process operations"); 13395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_process", &mac_enforce_process); 13495fab37eSRobert Watson 13595fab37eSRobert Watson static int mac_enforce_socket = 1; 13695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW, 13795fab37eSRobert Watson &mac_enforce_socket, 0, "Enforce MAC policy on socket operations"); 13895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket); 13995fab37eSRobert Watson 140ca7850c3SRobert Watson static int mac_enforce_vm = 1; 141ca7850c3SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_vm, CTLFLAG_RW, 142ca7850c3SRobert Watson &mac_enforce_vm, 0, "Enforce MAC policy on vm operations"); 143c031391bSRobert Watson TUNABLE_INT("security.mac.enforce_vm", &mac_enforce_vm); 144ca7850c3SRobert Watson 14595fab37eSRobert Watson static int mac_label_size = sizeof(struct mac); 14695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, label_size, CTLFLAG_RD, 14795fab37eSRobert Watson &mac_label_size, 0, "Pre-compiled MAC label size"); 14895fab37eSRobert Watson 14995fab37eSRobert Watson static int mac_cache_fslabel_in_vnode = 1; 15095fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, cache_fslabel_in_vnode, CTLFLAG_RW, 15195fab37eSRobert Watson &mac_cache_fslabel_in_vnode, 0, "Cache mount fslabel in vnode"); 15295fab37eSRobert Watson TUNABLE_INT("security.mac.cache_fslabel_in_vnode", 15395fab37eSRobert Watson &mac_cache_fslabel_in_vnode); 15495fab37eSRobert Watson 15595fab37eSRobert Watson static int mac_vnode_label_cache_hits = 0; 15695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_hits, CTLFLAG_RD, 15795fab37eSRobert Watson &mac_vnode_label_cache_hits, 0, "Cache hits on vnode labels"); 15895fab37eSRobert Watson static int mac_vnode_label_cache_misses = 0; 15995fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD, 16095fab37eSRobert Watson &mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels"); 161c0f39905SRobert Watson 162c0f39905SRobert Watson static int mac_mmap_revocation = 1; 163c0f39905SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation, CTLFLAG_RW, 164c0f39905SRobert Watson &mac_mmap_revocation, 0, "Revoke mmap access to files on subject " 165c0f39905SRobert Watson "relabel"); 16699fa64f8SRobert Watson static int mac_mmap_revocation_via_cow = 0; 16795fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW, 16895fab37eSRobert Watson &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via " 16995fab37eSRobert Watson "copy-on-write semantics, or by removing all write access"); 17095fab37eSRobert Watson 171f050add5SRobert Watson #ifdef MAC_DEBUG 1726be0c25eSRobert Watson SYSCTL_NODE(_security_mac, OID_AUTO, debug, CTLFLAG_RW, 0, 1736be0c25eSRobert Watson "TrustedBSD MAC debug info"); 1746be0c25eSRobert Watson 1756be0c25eSRobert Watson static int mac_debug_label_fallback = 0; 1766be0c25eSRobert Watson SYSCTL_INT(_security_mac_debug, OID_AUTO, label_fallback, CTLFLAG_RW, 1776be0c25eSRobert Watson &mac_debug_label_fallback, 0, "Filesystems should fall back to fs label" 1786be0c25eSRobert Watson "when label is corrupted."); 1796be0c25eSRobert Watson TUNABLE_INT("security.mac.debug_label_fallback", 1806be0c25eSRobert Watson &mac_debug_label_fallback); 1816be0c25eSRobert Watson 182b2f0927aSRobert Watson SYSCTL_NODE(_security_mac_debug, OID_AUTO, counters, CTLFLAG_RW, 0, 183b2f0927aSRobert Watson "TrustedBSD MAC object counters"); 184b2f0927aSRobert Watson 18595fab37eSRobert Watson static unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs, 18695fab37eSRobert Watson nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents, 18795fab37eSRobert Watson nmacipqs, nmacpipes; 188b2f0927aSRobert Watson 189b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD, 19095fab37eSRobert Watson &nmacmbufs, 0, "number of mbufs in use"); 191b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, creds, CTLFLAG_RD, 19295fab37eSRobert Watson &nmaccreds, 0, "number of ucreds in use"); 193b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD, 19495fab37eSRobert Watson &nmacifnets, 0, "number of ifnets in use"); 195b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD, 19695fab37eSRobert Watson &nmacipqs, 0, "number of ipqs in use"); 197b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, bpfdescs, CTLFLAG_RD, 19895fab37eSRobert Watson &nmacbpfdescs, 0, "number of bpfdescs in use"); 199b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, sockets, CTLFLAG_RD, 20095fab37eSRobert Watson &nmacsockets, 0, "number of sockets in use"); 201b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, pipes, CTLFLAG_RD, 20295fab37eSRobert Watson &nmacpipes, 0, "number of pipes in use"); 203b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mounts, CTLFLAG_RD, 20495fab37eSRobert Watson &nmacmounts, 0, "number of mounts in use"); 205b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, temp, CTLFLAG_RD, 20695fab37eSRobert Watson &nmactemp, 0, "number of temporary labels in use"); 207b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, vnodes, CTLFLAG_RD, 20895fab37eSRobert Watson &nmacvnodes, 0, "number of vnodes in use"); 209b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, devfsdirents, CTLFLAG_RD, 21095fab37eSRobert Watson &nmacdevfsdirents, 0, "number of devfs dirents inuse"); 211f050add5SRobert Watson #endif 21295fab37eSRobert Watson 21395fab37eSRobert Watson static int error_select(int error1, int error2); 21495fab37eSRobert Watson static int mac_externalize(struct label *label, struct mac *mac); 21595fab37eSRobert Watson static int mac_policy_register(struct mac_policy_conf *mpc); 21695fab37eSRobert Watson static int mac_policy_unregister(struct mac_policy_conf *mpc); 21795fab37eSRobert Watson 21895fab37eSRobert Watson static int mac_stdcreatevnode_ea(struct vnode *vp); 21995fab37eSRobert Watson static void mac_cred_mmapped_drop_perms(struct thread *td, 22095fab37eSRobert Watson struct ucred *cred); 22195fab37eSRobert Watson static void mac_cred_mmapped_drop_perms_recurse(struct thread *td, 22295fab37eSRobert Watson struct ucred *cred, struct vm_map *map); 22395fab37eSRobert Watson 22483985c26SRobert Watson static void mac_destroy_socket_label(struct label *label); 22583985c26SRobert Watson 22695fab37eSRobert Watson MALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 22795fab37eSRobert Watson MALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 22895fab37eSRobert Watson 22995fab37eSRobert Watson /* 23095fab37eSRobert Watson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 23195fab37eSRobert Watson * the linked list of attached policy modules. Read-only consumers of 23295fab37eSRobert Watson * the list must acquire a shared lock for the duration of their use; 23395fab37eSRobert Watson * writers must acquire an exclusive lock. Note that for compound 23495fab37eSRobert Watson * operations, locks should be held for the entire compound operation, 23595fab37eSRobert Watson * and that this is not yet done for relabel requests. 23695fab37eSRobert Watson */ 23795fab37eSRobert Watson static struct mtx mac_policy_list_lock; 23895fab37eSRobert Watson static LIST_HEAD(, mac_policy_conf) mac_policy_list; 23995fab37eSRobert Watson static int mac_policy_list_busy; 24095fab37eSRobert Watson #define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 24195fab37eSRobert Watson "mac_policy_list_lock", NULL, MTX_DEF); 24295fab37eSRobert Watson #define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 24395fab37eSRobert Watson #define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 24495fab37eSRobert Watson 24595fab37eSRobert Watson #define MAC_POLICY_LIST_BUSY() do { \ 24695fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 24795fab37eSRobert Watson mac_policy_list_busy++; \ 24895fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 24995fab37eSRobert Watson } while (0) 25095fab37eSRobert Watson 25195fab37eSRobert Watson #define MAC_POLICY_LIST_UNBUSY() do { \ 25295fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 25395fab37eSRobert Watson mac_policy_list_busy--; \ 25495fab37eSRobert Watson if (mac_policy_list_busy < 0) \ 25595fab37eSRobert Watson panic("Extra mac_policy_list_busy--"); \ 25695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 25795fab37eSRobert Watson } while (0) 25895fab37eSRobert Watson 25995fab37eSRobert Watson /* 26095fab37eSRobert Watson * MAC_CHECK performs the designated check by walking the policy 26195fab37eSRobert Watson * module list and checking with each as to how it feels about the 26295fab37eSRobert Watson * request. Note that it returns its value via 'error' in the scope 26395fab37eSRobert Watson * of the caller. 26495fab37eSRobert Watson */ 26595fab37eSRobert Watson #define MAC_CHECK(check, args...) do { \ 26695fab37eSRobert Watson struct mac_policy_conf *mpc; \ 26795fab37eSRobert Watson \ 26895fab37eSRobert Watson error = 0; \ 26995fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 27095fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 27195fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 27295fab37eSRobert Watson error = error_select( \ 27395fab37eSRobert Watson mpc->mpc_ops->mpo_ ## check (args), \ 27495fab37eSRobert Watson error); \ 27595fab37eSRobert Watson } \ 27695fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 27795fab37eSRobert Watson } while (0) 27895fab37eSRobert Watson 27995fab37eSRobert Watson /* 28095fab37eSRobert Watson * MAC_BOOLEAN performs the designated boolean composition by walking 28195fab37eSRobert Watson * the module list, invoking each instance of the operation, and 28295fab37eSRobert Watson * combining the results using the passed C operator. Note that it 28395fab37eSRobert Watson * returns its value via 'result' in the scope of the caller, which 28495fab37eSRobert Watson * should be initialized by the caller in a meaningful way to get 28595fab37eSRobert Watson * a meaningful result. 28695fab37eSRobert Watson */ 28795fab37eSRobert Watson #define MAC_BOOLEAN(operation, composition, args...) do { \ 28895fab37eSRobert Watson struct mac_policy_conf *mpc; \ 28995fab37eSRobert Watson \ 29095fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 29195fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 29295fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 29395fab37eSRobert Watson result = result composition \ 29495fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 29595fab37eSRobert Watson } \ 29695fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 29795fab37eSRobert Watson } while (0) 29895fab37eSRobert Watson 29995fab37eSRobert Watson /* 30095fab37eSRobert Watson * MAC_PERFORM performs the designated operation by walking the policy 30195fab37eSRobert Watson * module list and invoking that operation for each policy. 30295fab37eSRobert Watson */ 30395fab37eSRobert Watson #define MAC_PERFORM(operation, args...) do { \ 30495fab37eSRobert Watson struct mac_policy_conf *mpc; \ 30595fab37eSRobert Watson \ 30695fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 30795fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 30895fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 30995fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 31095fab37eSRobert Watson } \ 31195fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 31295fab37eSRobert Watson } while (0) 31395fab37eSRobert Watson 31495fab37eSRobert Watson /* 31595fab37eSRobert Watson * Initialize the MAC subsystem, including appropriate SMP locks. 31695fab37eSRobert Watson */ 31795fab37eSRobert Watson static void 31895fab37eSRobert Watson mac_init(void) 31995fab37eSRobert Watson { 32095fab37eSRobert Watson 32195fab37eSRobert Watson LIST_INIT(&mac_policy_list); 32295fab37eSRobert Watson MAC_POLICY_LIST_LOCKINIT(); 32395fab37eSRobert Watson } 32495fab37eSRobert Watson 32595fab37eSRobert Watson /* 32695fab37eSRobert Watson * For the purposes of modules that want to know if they were loaded 32795fab37eSRobert Watson * "early", set the mac_late flag once we've processed modules either 32895fab37eSRobert Watson * linked into the kernel, or loaded before the kernel startup. 32995fab37eSRobert Watson */ 33095fab37eSRobert Watson static void 33195fab37eSRobert Watson mac_late_init(void) 33295fab37eSRobert Watson { 33395fab37eSRobert Watson 33495fab37eSRobert Watson mac_late = 1; 33595fab37eSRobert Watson } 33695fab37eSRobert Watson 33795fab37eSRobert Watson /* 33895fab37eSRobert Watson * Allow MAC policy modules to register during boot, etc. 33995fab37eSRobert Watson */ 34095fab37eSRobert Watson int 34195fab37eSRobert Watson mac_policy_modevent(module_t mod, int type, void *data) 34295fab37eSRobert Watson { 34395fab37eSRobert Watson struct mac_policy_conf *mpc; 34495fab37eSRobert Watson int error; 34595fab37eSRobert Watson 34695fab37eSRobert Watson error = 0; 34795fab37eSRobert Watson mpc = (struct mac_policy_conf *) data; 34895fab37eSRobert Watson 34995fab37eSRobert Watson switch (type) { 35095fab37eSRobert Watson case MOD_LOAD: 35195fab37eSRobert Watson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 35295fab37eSRobert Watson mac_late) { 35395fab37eSRobert Watson printf("mac_policy_modevent: can't load %s policy " 35495fab37eSRobert Watson "after booting\n", mpc->mpc_name); 35595fab37eSRobert Watson error = EBUSY; 35695fab37eSRobert Watson break; 35795fab37eSRobert Watson } 35895fab37eSRobert Watson error = mac_policy_register(mpc); 35995fab37eSRobert Watson break; 36095fab37eSRobert Watson case MOD_UNLOAD: 36195fab37eSRobert Watson /* Don't unregister the module if it was never registered. */ 36295fab37eSRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 36395fab37eSRobert Watson != 0) 36495fab37eSRobert Watson error = mac_policy_unregister(mpc); 36595fab37eSRobert Watson else 36695fab37eSRobert Watson error = 0; 36795fab37eSRobert Watson break; 36895fab37eSRobert Watson default: 36995fab37eSRobert Watson break; 37095fab37eSRobert Watson } 37195fab37eSRobert Watson 37295fab37eSRobert Watson return (error); 37395fab37eSRobert Watson } 37495fab37eSRobert Watson 37595fab37eSRobert Watson static int 37695fab37eSRobert Watson mac_policy_register(struct mac_policy_conf *mpc) 37795fab37eSRobert Watson { 37895fab37eSRobert Watson struct mac_policy_conf *tmpc; 37995fab37eSRobert Watson struct mac_policy_op_entry *mpe; 38095fab37eSRobert Watson int slot; 38195fab37eSRobert Watson 382cc51a2b5SRobert Watson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*mpc->mpc_ops), 383cc51a2b5SRobert Watson M_MACOPVEC, M_WAITOK | M_ZERO); 38495fab37eSRobert Watson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 38595fab37eSRobert Watson switch (mpe->mpe_constant) { 38695fab37eSRobert Watson case MAC_OP_LAST: 38795fab37eSRobert Watson /* 38895fab37eSRobert Watson * Doesn't actually happen, but this allows checking 38995fab37eSRobert Watson * that all enumerated values are handled. 39095fab37eSRobert Watson */ 39195fab37eSRobert Watson break; 39295fab37eSRobert Watson case MAC_DESTROY: 39395fab37eSRobert Watson mpc->mpc_ops->mpo_destroy = 39495fab37eSRobert Watson mpe->mpe_function; 39595fab37eSRobert Watson break; 39695fab37eSRobert Watson case MAC_INIT: 39795fab37eSRobert Watson mpc->mpc_ops->mpo_init = 39895fab37eSRobert Watson mpe->mpe_function; 39995fab37eSRobert Watson break; 40027f2eac7SRobert Watson case MAC_SYSCALL: 40127f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall = 40227f2eac7SRobert Watson mpe->mpe_function; 40327f2eac7SRobert Watson break; 40496adb909SRobert Watson case MAC_INIT_BPFDESC_LABEL: 40596adb909SRobert Watson mpc->mpc_ops->mpo_init_bpfdesc_label = 40695fab37eSRobert Watson mpe->mpe_function; 40795fab37eSRobert Watson break; 40896adb909SRobert Watson case MAC_INIT_CRED_LABEL: 40996adb909SRobert Watson mpc->mpc_ops->mpo_init_cred_label = 41095fab37eSRobert Watson mpe->mpe_function; 41195fab37eSRobert Watson break; 41296adb909SRobert Watson case MAC_INIT_DEVFSDIRENT_LABEL: 41396adb909SRobert Watson mpc->mpc_ops->mpo_init_devfsdirent_label = 41495fab37eSRobert Watson mpe->mpe_function; 41595fab37eSRobert Watson break; 41696adb909SRobert Watson case MAC_INIT_IFNET_LABEL: 41796adb909SRobert Watson mpc->mpc_ops->mpo_init_ifnet_label = 41895fab37eSRobert Watson mpe->mpe_function; 41995fab37eSRobert Watson break; 42096adb909SRobert Watson case MAC_INIT_IPQ_LABEL: 42196adb909SRobert Watson mpc->mpc_ops->mpo_init_ipq_label = 42295fab37eSRobert Watson mpe->mpe_function; 42395fab37eSRobert Watson break; 42496adb909SRobert Watson case MAC_INIT_MBUF_LABEL: 42596adb909SRobert Watson mpc->mpc_ops->mpo_init_mbuf_label = 42695fab37eSRobert Watson mpe->mpe_function; 42795fab37eSRobert Watson break; 42896adb909SRobert Watson case MAC_INIT_MOUNT_LABEL: 42996adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_label = 43095fab37eSRobert Watson mpe->mpe_function; 43195fab37eSRobert Watson break; 43296adb909SRobert Watson case MAC_INIT_MOUNT_FS_LABEL: 43396adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_fs_label = 43495fab37eSRobert Watson mpe->mpe_function; 43595fab37eSRobert Watson break; 43696adb909SRobert Watson case MAC_INIT_PIPE_LABEL: 43796adb909SRobert Watson mpc->mpc_ops->mpo_init_pipe_label = 43895fab37eSRobert Watson mpe->mpe_function; 43995fab37eSRobert Watson break; 44096adb909SRobert Watson case MAC_INIT_SOCKET_LABEL: 44196adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_label = 44295fab37eSRobert Watson mpe->mpe_function; 44395fab37eSRobert Watson break; 44496adb909SRobert Watson case MAC_INIT_SOCKET_PEER_LABEL: 44596adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_peer_label = 44695fab37eSRobert Watson mpe->mpe_function; 44795fab37eSRobert Watson break; 44896adb909SRobert Watson case MAC_INIT_TEMP_LABEL: 44996adb909SRobert Watson mpc->mpc_ops->mpo_init_temp_label = 45095fab37eSRobert Watson mpe->mpe_function; 45195fab37eSRobert Watson break; 45296adb909SRobert Watson case MAC_INIT_VNODE_LABEL: 45396adb909SRobert Watson mpc->mpc_ops->mpo_init_vnode_label = 45495fab37eSRobert Watson mpe->mpe_function; 45595fab37eSRobert Watson break; 45696adb909SRobert Watson case MAC_DESTROY_BPFDESC_LABEL: 45796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_bpfdesc_label = 45895fab37eSRobert Watson mpe->mpe_function; 45995fab37eSRobert Watson break; 46096adb909SRobert Watson case MAC_DESTROY_CRED_LABEL: 46196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_cred_label = 46295fab37eSRobert Watson mpe->mpe_function; 46395fab37eSRobert Watson break; 46496adb909SRobert Watson case MAC_DESTROY_DEVFSDIRENT_LABEL: 46596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_devfsdirent_label = 46695fab37eSRobert Watson mpe->mpe_function; 46795fab37eSRobert Watson break; 46896adb909SRobert Watson case MAC_DESTROY_IFNET_LABEL: 46996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ifnet_label = 47095fab37eSRobert Watson mpe->mpe_function; 47195fab37eSRobert Watson break; 47296adb909SRobert Watson case MAC_DESTROY_IPQ_LABEL: 47396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ipq_label = 47495fab37eSRobert Watson mpe->mpe_function; 47595fab37eSRobert Watson break; 47696adb909SRobert Watson case MAC_DESTROY_MBUF_LABEL: 47796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mbuf_label = 47895fab37eSRobert Watson mpe->mpe_function; 47995fab37eSRobert Watson break; 48096adb909SRobert Watson case MAC_DESTROY_MOUNT_LABEL: 48196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_label = 48295fab37eSRobert Watson mpe->mpe_function; 48395fab37eSRobert Watson break; 48496adb909SRobert Watson case MAC_DESTROY_MOUNT_FS_LABEL: 48596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_fs_label = 48695fab37eSRobert Watson mpe->mpe_function; 48795fab37eSRobert Watson break; 48896adb909SRobert Watson case MAC_DESTROY_PIPE_LABEL: 48996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_pipe_label = 49096adb909SRobert Watson mpe->mpe_function; 49196adb909SRobert Watson break; 49296adb909SRobert Watson case MAC_DESTROY_SOCKET_LABEL: 49396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_label = 49496adb909SRobert Watson mpe->mpe_function; 49596adb909SRobert Watson break; 49696adb909SRobert Watson case MAC_DESTROY_SOCKET_PEER_LABEL: 49796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_peer_label = 49896adb909SRobert Watson mpe->mpe_function; 49996adb909SRobert Watson break; 50096adb909SRobert Watson case MAC_DESTROY_TEMP_LABEL: 50196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_temp_label = 50296adb909SRobert Watson mpe->mpe_function; 50396adb909SRobert Watson break; 50496adb909SRobert Watson case MAC_DESTROY_VNODE_LABEL: 50596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_vnode_label = 50695fab37eSRobert Watson mpe->mpe_function; 50795fab37eSRobert Watson break; 50895fab37eSRobert Watson case MAC_EXTERNALIZE: 50995fab37eSRobert Watson mpc->mpc_ops->mpo_externalize = 51095fab37eSRobert Watson mpe->mpe_function; 51195fab37eSRobert Watson break; 51295fab37eSRobert Watson case MAC_INTERNALIZE: 51395fab37eSRobert Watson mpc->mpc_ops->mpo_internalize = 51495fab37eSRobert Watson mpe->mpe_function; 51595fab37eSRobert Watson break; 51695fab37eSRobert Watson case MAC_CREATE_DEVFS_DEVICE: 51795fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_device = 51895fab37eSRobert Watson mpe->mpe_function; 51995fab37eSRobert Watson break; 52095fab37eSRobert Watson case MAC_CREATE_DEVFS_DIRECTORY: 52195fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_directory = 52295fab37eSRobert Watson mpe->mpe_function; 52395fab37eSRobert Watson break; 52474e62b1bSRobert Watson case MAC_CREATE_DEVFS_SYMLINK: 52574e62b1bSRobert Watson mpc->mpc_ops->mpo_create_devfs_symlink = 52674e62b1bSRobert Watson mpe->mpe_function; 52774e62b1bSRobert Watson break; 52895fab37eSRobert Watson case MAC_CREATE_DEVFS_VNODE: 52995fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_vnode = 53095fab37eSRobert Watson mpe->mpe_function; 53195fab37eSRobert Watson break; 53295fab37eSRobert Watson case MAC_STDCREATEVNODE_EA: 53395fab37eSRobert Watson mpc->mpc_ops->mpo_stdcreatevnode_ea = 53495fab37eSRobert Watson mpe->mpe_function; 53595fab37eSRobert Watson break; 53695fab37eSRobert Watson case MAC_CREATE_VNODE: 53795fab37eSRobert Watson mpc->mpc_ops->mpo_create_vnode = 53895fab37eSRobert Watson mpe->mpe_function; 53995fab37eSRobert Watson break; 54095fab37eSRobert Watson case MAC_CREATE_MOUNT: 54195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mount = 54295fab37eSRobert Watson mpe->mpe_function; 54395fab37eSRobert Watson break; 54495fab37eSRobert Watson case MAC_CREATE_ROOT_MOUNT: 54595fab37eSRobert Watson mpc->mpc_ops->mpo_create_root_mount = 54695fab37eSRobert Watson mpe->mpe_function; 54795fab37eSRobert Watson break; 54895fab37eSRobert Watson case MAC_RELABEL_VNODE: 54995fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_vnode = 55095fab37eSRobert Watson mpe->mpe_function; 55195fab37eSRobert Watson break; 55295fab37eSRobert Watson case MAC_UPDATE_DEVFSDIRENT: 55395fab37eSRobert Watson mpc->mpc_ops->mpo_update_devfsdirent = 55495fab37eSRobert Watson mpe->mpe_function; 55595fab37eSRobert Watson break; 55695fab37eSRobert Watson case MAC_UPDATE_PROCFSVNODE: 55795fab37eSRobert Watson mpc->mpc_ops->mpo_update_procfsvnode = 55895fab37eSRobert Watson mpe->mpe_function; 55995fab37eSRobert Watson break; 56095fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTATTR: 56195fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_extattr = 56295fab37eSRobert Watson mpe->mpe_function; 56395fab37eSRobert Watson break; 56495fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 56595fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_externalized = 56695fab37eSRobert Watson mpe->mpe_function; 56795fab37eSRobert Watson break; 56895fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_MOUNT: 56995fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_mount = 57095fab37eSRobert Watson mpe->mpe_function; 57195fab37eSRobert Watson break; 57295fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_SOCKET: 57395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_socket = 57495fab37eSRobert Watson mpe->mpe_function; 57595fab37eSRobert Watson break; 57695fab37eSRobert Watson case MAC_CREATE_PIPE: 57795fab37eSRobert Watson mpc->mpc_ops->mpo_create_pipe = 57895fab37eSRobert Watson mpe->mpe_function; 57995fab37eSRobert Watson break; 58095fab37eSRobert Watson case MAC_CREATE_SOCKET: 58195fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket = 58295fab37eSRobert Watson mpe->mpe_function; 58395fab37eSRobert Watson break; 58495fab37eSRobert Watson case MAC_CREATE_SOCKET_FROM_SOCKET: 58595fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket_from_socket = 58695fab37eSRobert Watson mpe->mpe_function; 58795fab37eSRobert Watson break; 58895fab37eSRobert Watson case MAC_RELABEL_PIPE: 58995fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_pipe = 59095fab37eSRobert Watson mpe->mpe_function; 59195fab37eSRobert Watson break; 59295fab37eSRobert Watson case MAC_RELABEL_SOCKET: 59395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_socket = 59495fab37eSRobert Watson mpe->mpe_function; 59595fab37eSRobert Watson break; 59695fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_MBUF: 59795fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 59895fab37eSRobert Watson mpe->mpe_function; 59995fab37eSRobert Watson break; 60095fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 60195fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 60295fab37eSRobert Watson mpe->mpe_function; 60395fab37eSRobert Watson break; 60495fab37eSRobert Watson case MAC_CREATE_BPFDESC: 60595fab37eSRobert Watson mpc->mpc_ops->mpo_create_bpfdesc = 60695fab37eSRobert Watson mpe->mpe_function; 60795fab37eSRobert Watson break; 60895fab37eSRobert Watson case MAC_CREATE_DATAGRAM_FROM_IPQ: 60995fab37eSRobert Watson mpc->mpc_ops->mpo_create_datagram_from_ipq = 61095fab37eSRobert Watson mpe->mpe_function; 61195fab37eSRobert Watson break; 61295fab37eSRobert Watson case MAC_CREATE_FRAGMENT: 61395fab37eSRobert Watson mpc->mpc_ops->mpo_create_fragment = 61495fab37eSRobert Watson mpe->mpe_function; 61595fab37eSRobert Watson break; 61695fab37eSRobert Watson case MAC_CREATE_IFNET: 61795fab37eSRobert Watson mpc->mpc_ops->mpo_create_ifnet = 61895fab37eSRobert Watson mpe->mpe_function; 61995fab37eSRobert Watson break; 62095fab37eSRobert Watson case MAC_CREATE_IPQ: 62195fab37eSRobert Watson mpc->mpc_ops->mpo_create_ipq = 62295fab37eSRobert Watson mpe->mpe_function; 62395fab37eSRobert Watson break; 62495fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_MBUF: 62595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 62695fab37eSRobert Watson mpe->mpe_function; 62795fab37eSRobert Watson break; 62895fab37eSRobert Watson case MAC_CREATE_MBUF_LINKLAYER: 62995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_linklayer = 63095fab37eSRobert Watson mpe->mpe_function; 63195fab37eSRobert Watson break; 63295fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_BPFDESC: 63395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 63495fab37eSRobert Watson mpe->mpe_function; 63595fab37eSRobert Watson break; 63695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_IFNET: 63795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 63895fab37eSRobert Watson mpe->mpe_function; 63995fab37eSRobert Watson break; 64095fab37eSRobert Watson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 64195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 64295fab37eSRobert Watson mpe->mpe_function; 64395fab37eSRobert Watson break; 64495fab37eSRobert Watson case MAC_CREATE_MBUF_NETLAYER: 64595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_netlayer = 64695fab37eSRobert Watson mpe->mpe_function; 64795fab37eSRobert Watson break; 64895fab37eSRobert Watson case MAC_FRAGMENT_MATCH: 64995fab37eSRobert Watson mpc->mpc_ops->mpo_fragment_match = 65095fab37eSRobert Watson mpe->mpe_function; 65195fab37eSRobert Watson break; 65295fab37eSRobert Watson case MAC_RELABEL_IFNET: 65395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_ifnet = 65495fab37eSRobert Watson mpe->mpe_function; 65595fab37eSRobert Watson break; 65695fab37eSRobert Watson case MAC_UPDATE_IPQ: 65795fab37eSRobert Watson mpc->mpc_ops->mpo_update_ipq = 65895fab37eSRobert Watson mpe->mpe_function; 65995fab37eSRobert Watson break; 66095fab37eSRobert Watson case MAC_CREATE_CRED: 66195fab37eSRobert Watson mpc->mpc_ops->mpo_create_cred = 66295fab37eSRobert Watson mpe->mpe_function; 66395fab37eSRobert Watson break; 66495fab37eSRobert Watson case MAC_EXECVE_TRANSITION: 66595fab37eSRobert Watson mpc->mpc_ops->mpo_execve_transition = 66695fab37eSRobert Watson mpe->mpe_function; 66795fab37eSRobert Watson break; 66895fab37eSRobert Watson case MAC_EXECVE_WILL_TRANSITION: 66995fab37eSRobert Watson mpc->mpc_ops->mpo_execve_will_transition = 67095fab37eSRobert Watson mpe->mpe_function; 67195fab37eSRobert Watson break; 67295fab37eSRobert Watson case MAC_CREATE_PROC0: 673226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc0 = 674226b96fbSRobert Watson mpe->mpe_function; 67595fab37eSRobert Watson break; 67695fab37eSRobert Watson case MAC_CREATE_PROC1: 677226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc1 = 678226b96fbSRobert Watson mpe->mpe_function; 67995fab37eSRobert Watson break; 68095fab37eSRobert Watson case MAC_RELABEL_CRED: 68195fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_cred = 68295fab37eSRobert Watson mpe->mpe_function; 68395fab37eSRobert Watson break; 68492dbb82aSRobert Watson case MAC_THREAD_USERRET: 68592dbb82aSRobert Watson mpc->mpc_ops->mpo_thread_userret = 68692dbb82aSRobert Watson mpe->mpe_function; 68792dbb82aSRobert Watson break; 68895fab37eSRobert Watson case MAC_CHECK_BPFDESC_RECEIVE: 68995fab37eSRobert Watson mpc->mpc_ops->mpo_check_bpfdesc_receive = 69095fab37eSRobert Watson mpe->mpe_function; 69195fab37eSRobert Watson break; 69295fab37eSRobert Watson case MAC_CHECK_CRED_RELABEL: 69395fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_relabel = 69495fab37eSRobert Watson mpe->mpe_function; 69595fab37eSRobert Watson break; 69695fab37eSRobert Watson case MAC_CHECK_CRED_VISIBLE: 69795fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_visible = 69895fab37eSRobert Watson mpe->mpe_function; 69995fab37eSRobert Watson break; 70095fab37eSRobert Watson case MAC_CHECK_IFNET_RELABEL: 70195fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_relabel = 70295fab37eSRobert Watson mpe->mpe_function; 70395fab37eSRobert Watson break; 70495fab37eSRobert Watson case MAC_CHECK_IFNET_TRANSMIT: 70595fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_transmit = 70695fab37eSRobert Watson mpe->mpe_function; 70795fab37eSRobert Watson break; 70895fab37eSRobert Watson case MAC_CHECK_MOUNT_STAT: 70995fab37eSRobert Watson mpc->mpc_ops->mpo_check_mount_stat = 71095fab37eSRobert Watson mpe->mpe_function; 71195fab37eSRobert Watson break; 71295fab37eSRobert Watson case MAC_CHECK_PIPE_IOCTL: 71395fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_ioctl = 71495fab37eSRobert Watson mpe->mpe_function; 71595fab37eSRobert Watson break; 716c024c3eeSRobert Watson case MAC_CHECK_PIPE_POLL: 717c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_poll = 718c024c3eeSRobert Watson mpe->mpe_function; 719c024c3eeSRobert Watson break; 720c024c3eeSRobert Watson case MAC_CHECK_PIPE_READ: 721c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_read = 72295fab37eSRobert Watson mpe->mpe_function; 72395fab37eSRobert Watson break; 72495fab37eSRobert Watson case MAC_CHECK_PIPE_RELABEL: 72595fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_relabel = 72695fab37eSRobert Watson mpe->mpe_function; 72795fab37eSRobert Watson break; 728c024c3eeSRobert Watson case MAC_CHECK_PIPE_STAT: 729c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_stat = 730c024c3eeSRobert Watson mpe->mpe_function; 731c024c3eeSRobert Watson break; 732c024c3eeSRobert Watson case MAC_CHECK_PIPE_WRITE: 733c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_write = 734c024c3eeSRobert Watson mpe->mpe_function; 735c024c3eeSRobert Watson break; 73695fab37eSRobert Watson case MAC_CHECK_PROC_DEBUG: 73795fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_debug = 73895fab37eSRobert Watson mpe->mpe_function; 73995fab37eSRobert Watson break; 74095fab37eSRobert Watson case MAC_CHECK_PROC_SCHED: 74195fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_sched = 74295fab37eSRobert Watson mpe->mpe_function; 74395fab37eSRobert Watson break; 74495fab37eSRobert Watson case MAC_CHECK_PROC_SIGNAL: 74595fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_signal = 74695fab37eSRobert Watson mpe->mpe_function; 74795fab37eSRobert Watson break; 74895fab37eSRobert Watson case MAC_CHECK_SOCKET_BIND: 74995fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_bind = 75095fab37eSRobert Watson mpe->mpe_function; 75195fab37eSRobert Watson break; 75295fab37eSRobert Watson case MAC_CHECK_SOCKET_CONNECT: 75395fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_connect = 75495fab37eSRobert Watson mpe->mpe_function; 75595fab37eSRobert Watson break; 756d61198e4SRobert Watson case MAC_CHECK_SOCKET_DELIVER: 757d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_deliver = 75895fab37eSRobert Watson mpe->mpe_function; 75995fab37eSRobert Watson break; 760d61198e4SRobert Watson case MAC_CHECK_SOCKET_LISTEN: 761d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_listen = 76295fab37eSRobert Watson mpe->mpe_function; 76395fab37eSRobert Watson break; 76495fab37eSRobert Watson case MAC_CHECK_SOCKET_RELABEL: 76595fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_relabel = 76695fab37eSRobert Watson mpe->mpe_function; 76795fab37eSRobert Watson break; 76895fab37eSRobert Watson case MAC_CHECK_SOCKET_VISIBLE: 76995fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_visible = 77095fab37eSRobert Watson mpe->mpe_function; 77195fab37eSRobert Watson break; 77295fab37eSRobert Watson case MAC_CHECK_VNODE_ACCESS: 77395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_access = 77495fab37eSRobert Watson mpe->mpe_function; 77595fab37eSRobert Watson break; 77695fab37eSRobert Watson case MAC_CHECK_VNODE_CHDIR: 77795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chdir = 77895fab37eSRobert Watson mpe->mpe_function; 77995fab37eSRobert Watson break; 78095fab37eSRobert Watson case MAC_CHECK_VNODE_CHROOT: 78195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chroot = 78295fab37eSRobert Watson mpe->mpe_function; 78395fab37eSRobert Watson break; 78495fab37eSRobert Watson case MAC_CHECK_VNODE_CREATE: 78595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_create = 78695fab37eSRobert Watson mpe->mpe_function; 78795fab37eSRobert Watson break; 78895fab37eSRobert Watson case MAC_CHECK_VNODE_DELETE: 78995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_delete = 79095fab37eSRobert Watson mpe->mpe_function; 79195fab37eSRobert Watson break; 79295fab37eSRobert Watson case MAC_CHECK_VNODE_DELETEACL: 79395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_deleteacl = 79495fab37eSRobert Watson mpe->mpe_function; 79595fab37eSRobert Watson break; 79695fab37eSRobert Watson case MAC_CHECK_VNODE_EXEC: 79795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_exec = 79895fab37eSRobert Watson mpe->mpe_function; 79995fab37eSRobert Watson break; 80095fab37eSRobert Watson case MAC_CHECK_VNODE_GETACL: 80195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getacl = 80295fab37eSRobert Watson mpe->mpe_function; 80395fab37eSRobert Watson break; 80495fab37eSRobert Watson case MAC_CHECK_VNODE_GETEXTATTR: 80595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getextattr = 80695fab37eSRobert Watson mpe->mpe_function; 80795fab37eSRobert Watson break; 8080a694196SRobert Watson case MAC_CHECK_VNODE_LINK: 8090a694196SRobert Watson mpc->mpc_ops->mpo_check_vnode_link = 8100a694196SRobert Watson mpe->mpe_function; 8110a694196SRobert Watson break; 81295fab37eSRobert Watson case MAC_CHECK_VNODE_LOOKUP: 81395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_lookup = 81495fab37eSRobert Watson mpe->mpe_function; 81595fab37eSRobert Watson break; 81695fab37eSRobert Watson case MAC_CHECK_VNODE_MMAP_PERMS: 81795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 81895fab37eSRobert Watson mpe->mpe_function; 81995fab37eSRobert Watson break; 82095fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 82195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 82295fab37eSRobert Watson mpe->mpe_function; 82395fab37eSRobert Watson break; 8247f724f8bSRobert Watson case MAC_CHECK_VNODE_POLL: 8257f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_poll = 8267f724f8bSRobert Watson mpe->mpe_function; 8277f724f8bSRobert Watson break; 8287f724f8bSRobert Watson case MAC_CHECK_VNODE_READ: 8297f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_read = 8307f724f8bSRobert Watson mpe->mpe_function; 8317f724f8bSRobert Watson break; 83295fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 83395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 83495fab37eSRobert Watson mpe->mpe_function; 83595fab37eSRobert Watson break; 83695fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 83795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 83895fab37eSRobert Watson mpe->mpe_function; 83995fab37eSRobert Watson break; 84095fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 84195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 84295fab37eSRobert Watson mpe->mpe_function; 84395fab37eSRobert Watson break; 84495fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 84595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 84695fab37eSRobert Watson mpe->mpe_function; 84795fab37eSRobert Watson break; 84895fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 84995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 85095fab37eSRobert Watson mpe->mpe_function; 85195fab37eSRobert Watson break; 85295fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 85395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 85495fab37eSRobert Watson mpe->mpe_function; 85595fab37eSRobert Watson break; 85695fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 85795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 85895fab37eSRobert Watson mpe->mpe_function; 85995fab37eSRobert Watson break; 86095fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 86195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 86295fab37eSRobert Watson mpe->mpe_function; 86395fab37eSRobert Watson break; 86495fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 86595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 86695fab37eSRobert Watson mpe->mpe_function; 86795fab37eSRobert Watson break; 86895fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 86995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 87095fab37eSRobert Watson mpe->mpe_function; 87195fab37eSRobert Watson break; 87295fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 87395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 87495fab37eSRobert Watson mpe->mpe_function; 87595fab37eSRobert Watson break; 87695fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 87795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 87895fab37eSRobert Watson mpe->mpe_function; 87995fab37eSRobert Watson break; 88095fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 88195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 88295fab37eSRobert Watson mpe->mpe_function; 88395fab37eSRobert Watson break; 8847f724f8bSRobert Watson case MAC_CHECK_VNODE_WRITE: 8857f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_write = 8867f724f8bSRobert Watson mpe->mpe_function; 8877f724f8bSRobert Watson break; 88895fab37eSRobert Watson /* 88995fab37eSRobert Watson default: 89095fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 89195fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 89295fab37eSRobert Watson return (EINVAL); 89395fab37eSRobert Watson */ 89495fab37eSRobert Watson } 89595fab37eSRobert Watson } 89695fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 89795fab37eSRobert Watson if (mac_policy_list_busy > 0) { 89895fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89995fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 90095fab37eSRobert Watson mpc->mpc_ops = NULL; 90195fab37eSRobert Watson return (EBUSY); 90295fab37eSRobert Watson } 90395fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 90495fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 90595fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 90695fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 90795fab37eSRobert Watson mpc->mpc_ops = NULL; 90895fab37eSRobert Watson return (EEXIST); 90995fab37eSRobert Watson } 91095fab37eSRobert Watson } 91195fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 91295fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 91395fab37eSRobert Watson if (slot == 0) { 91495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 91595fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 91695fab37eSRobert Watson mpc->mpc_ops = NULL; 91795fab37eSRobert Watson return (ENOMEM); 91895fab37eSRobert Watson } 91995fab37eSRobert Watson slot--; 92095fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 92195fab37eSRobert Watson *mpc->mpc_field_off = slot; 92295fab37eSRobert Watson } 92395fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 92495fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 92595fab37eSRobert Watson 92695fab37eSRobert Watson /* Per-policy initialization. */ 92795fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 92895fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 92995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 93095fab37eSRobert Watson 93195fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 93295fab37eSRobert Watson mpc->mpc_name); 93395fab37eSRobert Watson 93495fab37eSRobert Watson return (0); 93595fab37eSRobert Watson } 93695fab37eSRobert Watson 93795fab37eSRobert Watson static int 93895fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 93995fab37eSRobert Watson { 94095fab37eSRobert Watson 941ea599aa0SRobert Watson /* 942ea599aa0SRobert Watson * If we fail the load, we may get a request to unload. Check 943ea599aa0SRobert Watson * to see if we did the run-time registration, and if not, 944ea599aa0SRobert Watson * silently succeed. 945ea599aa0SRobert Watson */ 946ea599aa0SRobert Watson MAC_POLICY_LIST_LOCK(); 947ea599aa0SRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) == 0) { 948ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 949ea599aa0SRobert Watson return (0); 950ea599aa0SRobert Watson } 95195fab37eSRobert Watson #if 0 95295fab37eSRobert Watson /* 95395fab37eSRobert Watson * Don't allow unloading modules with private data. 95495fab37eSRobert Watson */ 955ea599aa0SRobert Watson if (mpc->mpc_field_off != NULL) { 956ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 95795fab37eSRobert Watson return (EBUSY); 958ea599aa0SRobert Watson } 95995fab37eSRobert Watson #endif 960ea599aa0SRobert Watson /* 961ea599aa0SRobert Watson * Only allow the unload to proceed if the module is unloadable 962ea599aa0SRobert Watson * by its own definition. 963ea599aa0SRobert Watson */ 964ea599aa0SRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) { 965ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 96695fab37eSRobert Watson return (EBUSY); 967ea599aa0SRobert Watson } 968ea599aa0SRobert Watson /* 969ea599aa0SRobert Watson * Right now, we EBUSY if the list is in use. In the future, 970ea599aa0SRobert Watson * for reliability reasons, we might want to sleep and wakeup 971ea599aa0SRobert Watson * later to try again. 972ea599aa0SRobert Watson */ 97395fab37eSRobert Watson if (mac_policy_list_busy > 0) { 97495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 97595fab37eSRobert Watson return (EBUSY); 97695fab37eSRobert Watson } 97795fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 97895fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 97995fab37eSRobert Watson 98095fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 98195fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 98295fab37eSRobert Watson 98395fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 98495fab37eSRobert Watson mpc->mpc_ops = NULL; 98595fab37eSRobert Watson 98695fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 98795fab37eSRobert Watson mpc->mpc_name); 98895fab37eSRobert Watson 98995fab37eSRobert Watson return (0); 99095fab37eSRobert Watson } 99195fab37eSRobert Watson 99295fab37eSRobert Watson /* 99395fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 99495fab37eSRobert Watson * value with the higher precedence. 99595fab37eSRobert Watson */ 99695fab37eSRobert Watson static int 99795fab37eSRobert Watson error_select(int error1, int error2) 99895fab37eSRobert Watson { 99995fab37eSRobert Watson 100095fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 100195fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 100295fab37eSRobert Watson return (EDEADLK); 100395fab37eSRobert Watson 100495fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 100595fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 100695fab37eSRobert Watson return (EINVAL); 100795fab37eSRobert Watson 100895fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 100995fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 101095fab37eSRobert Watson return (ESRCH); 101195fab37eSRobert Watson 101295fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 101395fab37eSRobert Watson return (ENOENT); 101495fab37eSRobert Watson 101595fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 101695fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 101795fab37eSRobert Watson return (EACCES); 101895fab37eSRobert Watson 101995fab37eSRobert Watson /* Precedence goes to privilege. */ 102095fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 102195fab37eSRobert Watson return (EPERM); 102295fab37eSRobert Watson 102395fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 102495fab37eSRobert Watson if (error1 != 0) 102595fab37eSRobert Watson return (error1); 102695fab37eSRobert Watson return (error2); 102795fab37eSRobert Watson } 102895fab37eSRobert Watson 102908bcdc58SRobert Watson static void 103008bcdc58SRobert Watson mac_init_label(struct label *label) 103108bcdc58SRobert Watson { 103208bcdc58SRobert Watson 103308bcdc58SRobert Watson bzero(label, sizeof(*label)); 103408bcdc58SRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 103508bcdc58SRobert Watson } 103608bcdc58SRobert Watson 103708bcdc58SRobert Watson static void 103808bcdc58SRobert Watson mac_destroy_label(struct label *label) 103908bcdc58SRobert Watson { 104008bcdc58SRobert Watson 104108bcdc58SRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 104208bcdc58SRobert Watson ("destroying uninitialized label")); 104308bcdc58SRobert Watson 104408bcdc58SRobert Watson bzero(label, sizeof(*label)); 104508bcdc58SRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 104608bcdc58SRobert Watson } 104708bcdc58SRobert Watson 104808bcdc58SRobert Watson static void 104908bcdc58SRobert Watson mac_init_structmac(struct mac *mac) 105008bcdc58SRobert Watson { 105108bcdc58SRobert Watson 105208bcdc58SRobert Watson bzero(mac, sizeof(*mac)); 105308bcdc58SRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 105408bcdc58SRobert Watson } 105508bcdc58SRobert Watson 105608bcdc58SRobert Watson void 105787807196SRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 105808bcdc58SRobert Watson { 105908bcdc58SRobert Watson 106087807196SRobert Watson mac_init_label(&bpf_d->bd_label); 106187807196SRobert Watson MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label); 106208bcdc58SRobert Watson #ifdef MAC_DEBUG 106387807196SRobert Watson atomic_add_int(&nmacbpfdescs, 1); 106408bcdc58SRobert Watson #endif 106508bcdc58SRobert Watson } 106608bcdc58SRobert Watson 106708bcdc58SRobert Watson void 106808bcdc58SRobert Watson mac_init_cred(struct ucred *cr) 106908bcdc58SRobert Watson { 107008bcdc58SRobert Watson 107108bcdc58SRobert Watson mac_init_label(&cr->cr_label); 107208bcdc58SRobert Watson MAC_PERFORM(init_cred_label, &cr->cr_label); 107308bcdc58SRobert Watson #ifdef MAC_DEBUG 107408bcdc58SRobert Watson atomic_add_int(&nmaccreds, 1); 107508bcdc58SRobert Watson #endif 107608bcdc58SRobert Watson } 107708bcdc58SRobert Watson 107808bcdc58SRobert Watson void 107987807196SRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 108008bcdc58SRobert Watson { 108108bcdc58SRobert Watson 108287807196SRobert Watson mac_init_label(&de->de_label); 108387807196SRobert Watson MAC_PERFORM(init_devfsdirent_label, &de->de_label); 108408bcdc58SRobert Watson #ifdef MAC_DEBUG 108587807196SRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 108608bcdc58SRobert Watson #endif 108708bcdc58SRobert Watson } 108808bcdc58SRobert Watson 108908bcdc58SRobert Watson void 109008bcdc58SRobert Watson mac_init_ifnet(struct ifnet *ifp) 109108bcdc58SRobert Watson { 109208bcdc58SRobert Watson 109308bcdc58SRobert Watson mac_init_label(&ifp->if_label); 109408bcdc58SRobert Watson MAC_PERFORM(init_ifnet_label, &ifp->if_label); 109508bcdc58SRobert Watson #ifdef MAC_DEBUG 109608bcdc58SRobert Watson atomic_add_int(&nmacifnets, 1); 109708bcdc58SRobert Watson #endif 109808bcdc58SRobert Watson } 109908bcdc58SRobert Watson 110008bcdc58SRobert Watson void 110108bcdc58SRobert Watson mac_init_ipq(struct ipq *ipq) 110208bcdc58SRobert Watson { 110308bcdc58SRobert Watson 110408bcdc58SRobert Watson mac_init_label(&ipq->ipq_label); 110508bcdc58SRobert Watson MAC_PERFORM(init_ipq_label, &ipq->ipq_label); 110608bcdc58SRobert Watson #ifdef MAC_DEBUG 110708bcdc58SRobert Watson atomic_add_int(&nmacipqs, 1); 110808bcdc58SRobert Watson #endif 110908bcdc58SRobert Watson } 111008bcdc58SRobert Watson 111187807196SRobert Watson int 111287807196SRobert Watson mac_init_mbuf(struct mbuf *m, int flag) 111308bcdc58SRobert Watson { 111456c15412SRobert Watson int error; 111556c15412SRobert Watson 111687807196SRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 111708bcdc58SRobert Watson 111887807196SRobert Watson mac_init_label(&m->m_pkthdr.label); 111987807196SRobert Watson 112056c15412SRobert Watson MAC_CHECK(init_mbuf_label, &m->m_pkthdr.label, flag); 112156c15412SRobert Watson if (error) { 112256c15412SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 112356c15412SRobert Watson mac_destroy_label(&m->m_pkthdr.label); 112456c15412SRobert Watson } 112556c15412SRobert Watson 112608bcdc58SRobert Watson #ifdef MAC_DEBUG 112756c15412SRobert Watson if (error == 0) 112887807196SRobert Watson atomic_add_int(&nmacmbufs, 1); 112908bcdc58SRobert Watson #endif 113056c15412SRobert Watson return (error); 113108bcdc58SRobert Watson } 113208bcdc58SRobert Watson 113308bcdc58SRobert Watson void 113487807196SRobert Watson mac_init_mount(struct mount *mp) 113508bcdc58SRobert Watson { 113608bcdc58SRobert Watson 113787807196SRobert Watson mac_init_label(&mp->mnt_mntlabel); 113887807196SRobert Watson mac_init_label(&mp->mnt_fslabel); 113987807196SRobert Watson MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel); 114087807196SRobert Watson MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel); 114108bcdc58SRobert Watson #ifdef MAC_DEBUG 114287807196SRobert Watson atomic_add_int(&nmacmounts, 1); 114308bcdc58SRobert Watson #endif 114408bcdc58SRobert Watson } 114508bcdc58SRobert Watson 114608bcdc58SRobert Watson void 114708bcdc58SRobert Watson mac_init_pipe(struct pipe *pipe) 114808bcdc58SRobert Watson { 114908bcdc58SRobert Watson struct label *label; 115008bcdc58SRobert Watson 115108bcdc58SRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 115208bcdc58SRobert Watson mac_init_label(label); 115308bcdc58SRobert Watson pipe->pipe_label = label; 115408bcdc58SRobert Watson pipe->pipe_peer->pipe_label = label; 115508bcdc58SRobert Watson MAC_PERFORM(init_pipe_label, pipe->pipe_label); 115608bcdc58SRobert Watson #ifdef MAC_DEBUG 115708bcdc58SRobert Watson atomic_add_int(&nmacpipes, 1); 115808bcdc58SRobert Watson #endif 115908bcdc58SRobert Watson } 116008bcdc58SRobert Watson 116183985c26SRobert Watson static int 116283985c26SRobert Watson mac_init_socket_label(struct label *label, int flag) 116308bcdc58SRobert Watson { 116483985c26SRobert Watson int error; 116508bcdc58SRobert Watson 116683985c26SRobert Watson mac_init_label(label); 116783985c26SRobert Watson 116883985c26SRobert Watson MAC_CHECK(init_socket_label, label, flag); 116983985c26SRobert Watson if (error) { 117083985c26SRobert Watson MAC_PERFORM(destroy_socket_label, label); 117183985c26SRobert Watson mac_destroy_label(label); 117283985c26SRobert Watson } 117383985c26SRobert Watson 117408bcdc58SRobert Watson #ifdef MAC_DEBUG 117583985c26SRobert Watson if (error == 0) 117687807196SRobert Watson atomic_add_int(&nmacsockets, 1); 117787807196SRobert Watson #endif 117883985c26SRobert Watson 117983985c26SRobert Watson return (error); 118083985c26SRobert Watson } 118183985c26SRobert Watson 118283985c26SRobert Watson static int 118383985c26SRobert Watson mac_init_socket_peer_label(struct label *label, int flag) 118483985c26SRobert Watson { 118583985c26SRobert Watson int error; 118683985c26SRobert Watson 118783985c26SRobert Watson mac_init_label(label); 118883985c26SRobert Watson 118983985c26SRobert Watson MAC_CHECK(init_socket_peer_label, label, flag); 119083985c26SRobert Watson if (error) { 119183985c26SRobert Watson MAC_PERFORM(destroy_socket_label, label); 119283985c26SRobert Watson mac_destroy_label(label); 119383985c26SRobert Watson } 119483985c26SRobert Watson 119583985c26SRobert Watson return (error); 119683985c26SRobert Watson } 119783985c26SRobert Watson 119883985c26SRobert Watson int 119983985c26SRobert Watson mac_init_socket(struct socket *socket, int flag) 120083985c26SRobert Watson { 120183985c26SRobert Watson int error; 120283985c26SRobert Watson 120383985c26SRobert Watson error = mac_init_socket_label(&socket->so_label, flag); 120483985c26SRobert Watson if (error) 120583985c26SRobert Watson return (error); 120683985c26SRobert Watson 120783985c26SRobert Watson error = mac_init_socket_peer_label(&socket->so_peerlabel, flag); 120883985c26SRobert Watson if (error) 120983985c26SRobert Watson mac_destroy_socket_label(&socket->so_label); 121083985c26SRobert Watson 121183985c26SRobert Watson return (error); 121287807196SRobert Watson } 121387807196SRobert Watson 121487807196SRobert Watson static void 121587807196SRobert Watson mac_init_temp(struct label *label) 121687807196SRobert Watson { 121787807196SRobert Watson 121887807196SRobert Watson mac_init_label(label); 121987807196SRobert Watson MAC_PERFORM(init_temp_label, label); 122087807196SRobert Watson #ifdef MAC_DEBUG 122187807196SRobert Watson atomic_add_int(&nmactemp, 1); 122208bcdc58SRobert Watson #endif 122308bcdc58SRobert Watson } 122408bcdc58SRobert Watson 122508bcdc58SRobert Watson void 122687807196SRobert Watson mac_init_vnode(struct vnode *vp) 122708bcdc58SRobert Watson { 122808bcdc58SRobert Watson 122987807196SRobert Watson mac_init_label(&vp->v_label); 123087807196SRobert Watson MAC_PERFORM(init_vnode_label, &vp->v_label); 123108bcdc58SRobert Watson #ifdef MAC_DEBUG 123287807196SRobert Watson atomic_add_int(&nmacvnodes, 1); 123308bcdc58SRobert Watson #endif 123408bcdc58SRobert Watson } 123508bcdc58SRobert Watson 123608bcdc58SRobert Watson void 123708bcdc58SRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 123808bcdc58SRobert Watson { 123908bcdc58SRobert Watson 124008bcdc58SRobert Watson MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label); 124108bcdc58SRobert Watson mac_destroy_label(&bpf_d->bd_label); 124208bcdc58SRobert Watson #ifdef MAC_DEBUG 124308bcdc58SRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 124408bcdc58SRobert Watson #endif 124508bcdc58SRobert Watson } 124608bcdc58SRobert Watson 124708bcdc58SRobert Watson void 124887807196SRobert Watson mac_destroy_cred(struct ucred *cr) 124908bcdc58SRobert Watson { 125008bcdc58SRobert Watson 125187807196SRobert Watson MAC_PERFORM(destroy_cred_label, &cr->cr_label); 125287807196SRobert Watson mac_destroy_label(&cr->cr_label); 125308bcdc58SRobert Watson #ifdef MAC_DEBUG 125487807196SRobert Watson atomic_subtract_int(&nmaccreds, 1); 125587807196SRobert Watson #endif 125687807196SRobert Watson } 125787807196SRobert Watson 125887807196SRobert Watson void 125987807196SRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 126087807196SRobert Watson { 126187807196SRobert Watson 126287807196SRobert Watson MAC_PERFORM(destroy_devfsdirent_label, &de->de_label); 126387807196SRobert Watson mac_destroy_label(&de->de_label); 126487807196SRobert Watson #ifdef MAC_DEBUG 126587807196SRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 126687807196SRobert Watson #endif 126787807196SRobert Watson } 126887807196SRobert Watson 126987807196SRobert Watson void 127087807196SRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 127187807196SRobert Watson { 127287807196SRobert Watson 127387807196SRobert Watson MAC_PERFORM(destroy_ifnet_label, &ifp->if_label); 127487807196SRobert Watson mac_destroy_label(&ifp->if_label); 127587807196SRobert Watson #ifdef MAC_DEBUG 127687807196SRobert Watson atomic_subtract_int(&nmacifnets, 1); 127787807196SRobert Watson #endif 127887807196SRobert Watson } 127987807196SRobert Watson 128087807196SRobert Watson void 128187807196SRobert Watson mac_destroy_ipq(struct ipq *ipq) 128287807196SRobert Watson { 128387807196SRobert Watson 128487807196SRobert Watson MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label); 128587807196SRobert Watson mac_destroy_label(&ipq->ipq_label); 128687807196SRobert Watson #ifdef MAC_DEBUG 128787807196SRobert Watson atomic_subtract_int(&nmacipqs, 1); 128887807196SRobert Watson #endif 128987807196SRobert Watson } 129087807196SRobert Watson 129187807196SRobert Watson void 129287807196SRobert Watson mac_destroy_mbuf(struct mbuf *m) 129387807196SRobert Watson { 129487807196SRobert Watson 129587807196SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 129687807196SRobert Watson mac_destroy_label(&m->m_pkthdr.label); 129787807196SRobert Watson #ifdef MAC_DEBUG 129887807196SRobert Watson atomic_subtract_int(&nmacmbufs, 1); 129908bcdc58SRobert Watson #endif 130008bcdc58SRobert Watson } 130108bcdc58SRobert Watson 130208bcdc58SRobert Watson void 130308bcdc58SRobert Watson mac_destroy_mount(struct mount *mp) 130408bcdc58SRobert Watson { 130508bcdc58SRobert Watson 130608bcdc58SRobert Watson MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel); 130708bcdc58SRobert Watson MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel); 130808bcdc58SRobert Watson mac_destroy_label(&mp->mnt_fslabel); 130908bcdc58SRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 131008bcdc58SRobert Watson #ifdef MAC_DEBUG 131108bcdc58SRobert Watson atomic_subtract_int(&nmacmounts, 1); 131208bcdc58SRobert Watson #endif 131308bcdc58SRobert Watson } 131408bcdc58SRobert Watson 131587807196SRobert Watson void 131687807196SRobert Watson mac_destroy_pipe(struct pipe *pipe) 131708bcdc58SRobert Watson { 131808bcdc58SRobert Watson 131987807196SRobert Watson MAC_PERFORM(destroy_pipe_label, pipe->pipe_label); 132087807196SRobert Watson mac_destroy_label(pipe->pipe_label); 132187807196SRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 132208bcdc58SRobert Watson #ifdef MAC_DEBUG 132387807196SRobert Watson atomic_subtract_int(&nmacpipes, 1); 132487807196SRobert Watson #endif 132587807196SRobert Watson } 132687807196SRobert Watson 132783985c26SRobert Watson static void 132883985c26SRobert Watson mac_destroy_socket_label(struct label *label) 132983985c26SRobert Watson { 133083985c26SRobert Watson 133183985c26SRobert Watson MAC_PERFORM(destroy_socket_label, label); 133283985c26SRobert Watson mac_destroy_label(label); 133383985c26SRobert Watson #ifdef MAC_DEBUG 133483985c26SRobert Watson atomic_subtract_int(&nmacsockets, 1); 133583985c26SRobert Watson #endif 133683985c26SRobert Watson } 133783985c26SRobert Watson 133883985c26SRobert Watson static void 133983985c26SRobert Watson mac_destroy_socket_peer_label(struct label *label) 134083985c26SRobert Watson { 134183985c26SRobert Watson 134283985c26SRobert Watson MAC_PERFORM(destroy_socket_peer_label, label); 134383985c26SRobert Watson mac_destroy_label(label); 134483985c26SRobert Watson } 134583985c26SRobert Watson 134687807196SRobert Watson void 134787807196SRobert Watson mac_destroy_socket(struct socket *socket) 134887807196SRobert Watson { 134987807196SRobert Watson 135083985c26SRobert Watson mac_destroy_socket_label(&socket->so_label); 135183985c26SRobert Watson mac_destroy_socket_peer_label(&socket->so_peerlabel); 135208bcdc58SRobert Watson } 135308bcdc58SRobert Watson 135408bcdc58SRobert Watson static void 135508bcdc58SRobert Watson mac_destroy_temp(struct label *label) 135608bcdc58SRobert Watson { 135708bcdc58SRobert Watson 135808bcdc58SRobert Watson MAC_PERFORM(destroy_temp_label, label); 135908bcdc58SRobert Watson mac_destroy_label(label); 136008bcdc58SRobert Watson #ifdef MAC_DEBUG 136108bcdc58SRobert Watson atomic_subtract_int(&nmactemp, 1); 136208bcdc58SRobert Watson #endif 136308bcdc58SRobert Watson } 136408bcdc58SRobert Watson 136508bcdc58SRobert Watson void 136608bcdc58SRobert Watson mac_destroy_vnode(struct vnode *vp) 136708bcdc58SRobert Watson { 136808bcdc58SRobert Watson 136908bcdc58SRobert Watson MAC_PERFORM(destroy_vnode_label, &vp->v_label); 137008bcdc58SRobert Watson mac_destroy_label(&vp->v_label); 137108bcdc58SRobert Watson #ifdef MAC_DEBUG 137208bcdc58SRobert Watson atomic_subtract_int(&nmacvnodes, 1); 137308bcdc58SRobert Watson #endif 137408bcdc58SRobert Watson } 137508bcdc58SRobert Watson 137669bbb5b1SRobert Watson static int 137769bbb5b1SRobert Watson mac_externalize(struct label *label, struct mac *mac) 137869bbb5b1SRobert Watson { 137969bbb5b1SRobert Watson int error; 138069bbb5b1SRobert Watson 138169bbb5b1SRobert Watson mac_init_structmac(mac); 138269bbb5b1SRobert Watson MAC_CHECK(externalize, label, mac); 138369bbb5b1SRobert Watson 138469bbb5b1SRobert Watson return (error); 138569bbb5b1SRobert Watson } 138669bbb5b1SRobert Watson 138769bbb5b1SRobert Watson static int 138869bbb5b1SRobert Watson mac_internalize(struct label *label, struct mac *mac) 138969bbb5b1SRobert Watson { 139069bbb5b1SRobert Watson int error; 139169bbb5b1SRobert Watson 139269bbb5b1SRobert Watson mac_init_temp(label); 139369bbb5b1SRobert Watson MAC_CHECK(internalize, label, mac); 139469bbb5b1SRobert Watson if (error) 139569bbb5b1SRobert Watson mac_destroy_temp(label); 139669bbb5b1SRobert Watson 139769bbb5b1SRobert Watson return (error); 139869bbb5b1SRobert Watson } 139969bbb5b1SRobert Watson 140069bbb5b1SRobert Watson /* 140169bbb5b1SRobert Watson * Initialize MAC label for the first kernel process, from which other 140269bbb5b1SRobert Watson * kernel processes and threads are spawned. 140369bbb5b1SRobert Watson */ 140469bbb5b1SRobert Watson void 140569bbb5b1SRobert Watson mac_create_proc0(struct ucred *cred) 140669bbb5b1SRobert Watson { 140769bbb5b1SRobert Watson 140869bbb5b1SRobert Watson MAC_PERFORM(create_proc0, cred); 140969bbb5b1SRobert Watson } 141069bbb5b1SRobert Watson 141169bbb5b1SRobert Watson /* 141269bbb5b1SRobert Watson * Initialize MAC label for the first userland process, from which other 141369bbb5b1SRobert Watson * userland processes and threads are spawned. 141469bbb5b1SRobert Watson */ 141569bbb5b1SRobert Watson void 141669bbb5b1SRobert Watson mac_create_proc1(struct ucred *cred) 141769bbb5b1SRobert Watson { 141869bbb5b1SRobert Watson 141969bbb5b1SRobert Watson MAC_PERFORM(create_proc1, cred); 142069bbb5b1SRobert Watson } 142169bbb5b1SRobert Watson 142269bbb5b1SRobert Watson void 142369bbb5b1SRobert Watson mac_thread_userret(struct thread *td) 142469bbb5b1SRobert Watson { 142569bbb5b1SRobert Watson 142669bbb5b1SRobert Watson MAC_PERFORM(thread_userret, td); 142769bbb5b1SRobert Watson } 142869bbb5b1SRobert Watson 142969bbb5b1SRobert Watson /* 143069bbb5b1SRobert Watson * When a new process is created, its label must be initialized. Generally, 143169bbb5b1SRobert Watson * this involves inheritence from the parent process, modulo possible 143269bbb5b1SRobert Watson * deltas. This function allows that processing to take place. 143369bbb5b1SRobert Watson */ 143469bbb5b1SRobert Watson void 143569bbb5b1SRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 143669bbb5b1SRobert Watson { 143769bbb5b1SRobert Watson 143869bbb5b1SRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 143969bbb5b1SRobert Watson } 144069bbb5b1SRobert Watson 144195fab37eSRobert Watson void 144295fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 144395fab37eSRobert Watson { 144495fab37eSRobert Watson 144595fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 144695fab37eSRobert Watson } 144795fab37eSRobert Watson 144895fab37eSRobert Watson void 144995fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 145095fab37eSRobert Watson { 145195fab37eSRobert Watson 145295fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 145395fab37eSRobert Watson } 145495fab37eSRobert Watson 145595fab37eSRobert Watson /* 145695fab37eSRobert Watson * Support callout for policies that manage their own externalization 145795fab37eSRobert Watson * using extended attributes. 145895fab37eSRobert Watson */ 145995fab37eSRobert Watson static int 146095fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 146195fab37eSRobert Watson { 146295fab37eSRobert Watson int error; 146395fab37eSRobert Watson 146495fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 146595fab37eSRobert Watson &mp->mnt_fslabel); 146695fab37eSRobert Watson 146795fab37eSRobert Watson return (error); 146895fab37eSRobert Watson } 146995fab37eSRobert Watson 147095fab37eSRobert Watson /* 147195fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 147295fab37eSRobert Watson * vnode. 147395fab37eSRobert Watson */ 147495fab37eSRobert Watson static int 147595fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 147695fab37eSRobert Watson { 147795fab37eSRobert Watson int error; 147895fab37eSRobert Watson 147995fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 148095fab37eSRobert Watson 148195fab37eSRobert Watson return (error); 148295fab37eSRobert Watson } 148395fab37eSRobert Watson 148495fab37eSRobert Watson /* 148595fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 148695fab37eSRobert Watson * the mountpoint. 148795fab37eSRobert Watson */ 148895fab37eSRobert Watson void 148995fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 149095fab37eSRobert Watson { 149195fab37eSRobert Watson 149295fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 149395fab37eSRobert Watson &mp->mnt_fslabel); 149495fab37eSRobert Watson 1495e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 149695fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 1497e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 149895fab37eSRobert Watson } 149995fab37eSRobert Watson 150095fab37eSRobert Watson /* 150195fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 150295fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 150395fab37eSRobert Watson * extended attributes. 150495fab37eSRobert Watson */ 150595fab37eSRobert Watson int 150695fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 150795fab37eSRobert Watson { 150895fab37eSRobert Watson struct vnode *vp = ap->a_vp; 150995fab37eSRobert Watson struct mac extmac; 151095fab37eSRobert Watson int buflen, error; 151195fab37eSRobert Watson 151295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 151395fab37eSRobert Watson 151495fab37eSRobert Watson /* 151595fab37eSRobert Watson * Call out to external policies first. Order doesn't really 151695fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 151795fab37eSRobert Watson */ 151895fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 151995fab37eSRobert Watson if (error) 152095fab37eSRobert Watson return (error); 152195fab37eSRobert Watson 152295fab37eSRobert Watson buflen = sizeof(extmac); 152395fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 152495fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 152595fab37eSRobert Watson (char *)&extmac, curthread); 152695fab37eSRobert Watson switch (error) { 152795fab37eSRobert Watson case 0: 152895fab37eSRobert Watson /* Got it */ 152995fab37eSRobert Watson break; 153095fab37eSRobert Watson 153195fab37eSRobert Watson case ENOATTR: 153295fab37eSRobert Watson /* 153395fab37eSRobert Watson * Use the label from the mount point. 153495fab37eSRobert Watson */ 153595fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 153695fab37eSRobert Watson return (0); 153795fab37eSRobert Watson 153895fab37eSRobert Watson case EOPNOTSUPP: 153995fab37eSRobert Watson default: 154095fab37eSRobert Watson /* Fail horribly. */ 154195fab37eSRobert Watson return (error); 154295fab37eSRobert Watson } 154395fab37eSRobert Watson 154495fab37eSRobert Watson if (buflen != sizeof(extmac)) 154595fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 154695fab37eSRobert Watson if (error == 0) 154795fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 154895fab37eSRobert Watson if (error == 0) 1549e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 155095fab37eSRobert Watson else { 155195fab37eSRobert Watson struct vattr va; 155295fab37eSRobert Watson 155395fab37eSRobert Watson printf("Corrupted label on %s", 155495fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 155595fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 155695fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 15576be0c25eSRobert Watson #ifdef MAC_DEBUG 155895fab37eSRobert Watson if (mac_debug_label_fallback) { 155995fab37eSRobert Watson printf(", falling back.\n"); 156095fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 156195fab37eSRobert Watson error = 0; 156295fab37eSRobert Watson } else { 15636be0c25eSRobert Watson #endif 156495fab37eSRobert Watson printf(".\n"); 156595fab37eSRobert Watson error = EPERM; 15666be0c25eSRobert Watson #ifdef MAC_DEBUG 156795fab37eSRobert Watson } 15686be0c25eSRobert Watson #endif 156995fab37eSRobert Watson } 157095fab37eSRobert Watson 157195fab37eSRobert Watson return (error); 157295fab37eSRobert Watson } 157395fab37eSRobert Watson 157495fab37eSRobert Watson /* 157595fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 157695fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 157795fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 157895fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 157995fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 158095fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 158195fab37eSRobert Watson * all vnodes. 158295fab37eSRobert Watson */ 158395fab37eSRobert Watson static int 158495fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 158595fab37eSRobert Watson { 158695fab37eSRobert Watson int error; 158795fab37eSRobert Watson 158895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 158995fab37eSRobert Watson 159095fab37eSRobert Watson if (vp->v_mount == NULL) { 159195fab37eSRobert Watson /* 159295fab37eSRobert Watson Eventually, we probably want to special-case refreshing 159395fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 159495fab37eSRobert Watson that case might be handled here. 159595fab37eSRobert Watson 159695fab37eSRobert Watson mac_update_vnode_deadfs(vp); 159795fab37eSRobert Watson return (0); 159895fab37eSRobert Watson */ 159995fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 160006be2aaaSNate Lawson if (vp->v_type != VNON) 160195fab37eSRobert Watson printf( 160206be2aaaSNate Lawson "vn_refreshlabel: null v_mount with non-VNON\n"); 160395fab37eSRobert Watson return (EBADF); 160495fab37eSRobert Watson } 160595fab37eSRobert Watson 1606e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 160795fab37eSRobert Watson mac_vnode_label_cache_hits++; 160895fab37eSRobert Watson return (0); 160995fab37eSRobert Watson } else 161095fab37eSRobert Watson mac_vnode_label_cache_misses++; 161195fab37eSRobert Watson 161295fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 161395fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 161495fab37eSRobert Watson return (0); 161595fab37eSRobert Watson } 161695fab37eSRobert Watson 161795fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 161895fab37eSRobert Watson switch (error) { 161995fab37eSRobert Watson case EOPNOTSUPP: 162095fab37eSRobert Watson /* 162195fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 162295fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 162395fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 162495fab37eSRobert Watson * about doing this. 162595fab37eSRobert Watson */ 162695fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 162795fab37eSRobert Watson error = 0; 162895fab37eSRobert Watson default: 162995fab37eSRobert Watson return (error); 163095fab37eSRobert Watson } 163195fab37eSRobert Watson } 163295fab37eSRobert Watson 163395fab37eSRobert Watson /* 163495fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 163595fab37eSRobert Watson * function must be called after EA service is available for the vnode, 163695fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 163795fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 163895fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 163995fab37eSRobert Watson */ 164095fab37eSRobert Watson int 164195fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 164295fab37eSRobert Watson { 164395fab37eSRobert Watson struct mac extmac; 164495fab37eSRobert Watson int error; 164595fab37eSRobert Watson 1646e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 164795fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 164895fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 164995fab37eSRobert Watson } else { 165095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 165195fab37eSRobert Watson if (error) 165295fab37eSRobert Watson return (error); 165395fab37eSRobert Watson 165495fab37eSRobert Watson /* 165595fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 165695fab37eSRobert Watson * disk. If we fail, return a failure to abort the 165795fab37eSRobert Watson * create operation. Really, this failure shouldn't 165895fab37eSRobert Watson * happen except in fairly unusual circumstances (out 165995fab37eSRobert Watson * of disk, etc). 166095fab37eSRobert Watson */ 166195fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 166295fab37eSRobert Watson 166395fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 166495fab37eSRobert Watson if (error) 166595fab37eSRobert Watson return (error); 166695fab37eSRobert Watson 166795fab37eSRobert Watson /* 166895fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 166995fab37eSRobert Watson * directly manage their extended attributes. 167095fab37eSRobert Watson */ 167195fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 167295fab37eSRobert Watson if (error) 167395fab37eSRobert Watson return (error); 167495fab37eSRobert Watson 167595fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 167695fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 167795fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 167895fab37eSRobert Watson if (error == 0) 1679e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 168095fab37eSRobert Watson else { 168195fab37eSRobert Watson #if 0 168295fab37eSRobert Watson /* 168395fab37eSRobert Watson * In theory, we could have fall-back behavior here. 168495fab37eSRobert Watson * It would probably be incorrect. 168595fab37eSRobert Watson */ 168695fab37eSRobert Watson #endif 168795fab37eSRobert Watson return (error); 168895fab37eSRobert Watson } 168995fab37eSRobert Watson } 169095fab37eSRobert Watson 169195fab37eSRobert Watson return (0); 169295fab37eSRobert Watson } 169395fab37eSRobert Watson 169495fab37eSRobert Watson void 169595fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 169695fab37eSRobert Watson { 169795fab37eSRobert Watson int error; 169895fab37eSRobert Watson 169995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 170095fab37eSRobert Watson 170195fab37eSRobert Watson error = vn_refreshlabel(vp, old); 170295fab37eSRobert Watson if (error) { 170395fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 170495fab37eSRobert Watson error); 170595fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 170695fab37eSRobert Watson } 170795fab37eSRobert Watson 170895fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 170995fab37eSRobert Watson } 171095fab37eSRobert Watson 171195fab37eSRobert Watson int 171295fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 171395fab37eSRobert Watson { 171495fab37eSRobert Watson int error, result; 171595fab37eSRobert Watson 171695fab37eSRobert Watson error = vn_refreshlabel(vp, old); 171795fab37eSRobert Watson if (error) 171895fab37eSRobert Watson return (error); 171995fab37eSRobert Watson 172095fab37eSRobert Watson result = 0; 172195fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 172295fab37eSRobert Watson 172395fab37eSRobert Watson return (result); 172495fab37eSRobert Watson } 172595fab37eSRobert Watson 172695fab37eSRobert Watson int 172795fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 172895fab37eSRobert Watson { 172995fab37eSRobert Watson int error; 173095fab37eSRobert Watson 173195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 173295fab37eSRobert Watson 173395fab37eSRobert Watson if (!mac_enforce_fs) 173495fab37eSRobert Watson return (0); 173595fab37eSRobert Watson 173695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 173795fab37eSRobert Watson if (error) 173895fab37eSRobert Watson return (error); 173995fab37eSRobert Watson 174095fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 174195fab37eSRobert Watson return (error); 174295fab37eSRobert Watson } 174395fab37eSRobert Watson 174495fab37eSRobert Watson int 174595fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 174695fab37eSRobert Watson { 174795fab37eSRobert Watson int error; 174895fab37eSRobert Watson 174995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 175095fab37eSRobert Watson 175195fab37eSRobert Watson if (!mac_enforce_fs) 175295fab37eSRobert Watson return (0); 175395fab37eSRobert Watson 175495fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 175595fab37eSRobert Watson if (error) 175695fab37eSRobert Watson return (error); 175795fab37eSRobert Watson 175895fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 175995fab37eSRobert Watson return (error); 176095fab37eSRobert Watson } 176195fab37eSRobert Watson 176295fab37eSRobert Watson int 176395fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 176495fab37eSRobert Watson { 176595fab37eSRobert Watson int error; 176695fab37eSRobert Watson 176795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 176895fab37eSRobert Watson 176995fab37eSRobert Watson if (!mac_enforce_fs) 177095fab37eSRobert Watson return (0); 177195fab37eSRobert Watson 177295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 177395fab37eSRobert Watson if (error) 177495fab37eSRobert Watson return (error); 177595fab37eSRobert Watson 177695fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 177795fab37eSRobert Watson return (error); 177895fab37eSRobert Watson } 177995fab37eSRobert Watson 178095fab37eSRobert Watson int 178195fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 178295fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 178395fab37eSRobert Watson { 178495fab37eSRobert Watson int error; 178595fab37eSRobert Watson 178695fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 178795fab37eSRobert Watson 178895fab37eSRobert Watson if (!mac_enforce_fs) 178995fab37eSRobert Watson return (0); 179095fab37eSRobert Watson 179195fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 179295fab37eSRobert Watson if (error) 179395fab37eSRobert Watson return (error); 179495fab37eSRobert Watson 179595fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 179695fab37eSRobert Watson return (error); 179795fab37eSRobert Watson } 179895fab37eSRobert Watson 179995fab37eSRobert Watson int 180095fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 180195fab37eSRobert Watson struct componentname *cnp) 180295fab37eSRobert Watson { 180395fab37eSRobert Watson int error; 180495fab37eSRobert Watson 180595fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 180695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 180795fab37eSRobert Watson 180895fab37eSRobert Watson if (!mac_enforce_fs) 180995fab37eSRobert Watson return (0); 181095fab37eSRobert Watson 181195fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 181295fab37eSRobert Watson if (error) 181395fab37eSRobert Watson return (error); 181495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 181595fab37eSRobert Watson if (error) 181695fab37eSRobert Watson return (error); 181795fab37eSRobert Watson 181895fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 181995fab37eSRobert Watson &vp->v_label, cnp); 182095fab37eSRobert Watson return (error); 182195fab37eSRobert Watson } 182295fab37eSRobert Watson 182395fab37eSRobert Watson int 182495fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 182595fab37eSRobert Watson acl_type_t type) 182695fab37eSRobert Watson { 182795fab37eSRobert Watson int error; 182895fab37eSRobert Watson 182995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 183095fab37eSRobert Watson 183195fab37eSRobert Watson if (!mac_enforce_fs) 183295fab37eSRobert Watson return (0); 183395fab37eSRobert Watson 183495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 183595fab37eSRobert Watson if (error) 183695fab37eSRobert Watson return (error); 183795fab37eSRobert Watson 183895fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 183995fab37eSRobert Watson return (error); 184095fab37eSRobert Watson } 184195fab37eSRobert Watson 184295fab37eSRobert Watson int 184395fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 184495fab37eSRobert Watson { 184595fab37eSRobert Watson int error; 184695fab37eSRobert Watson 1847851704bbSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1848851704bbSRobert Watson 184995fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 185095fab37eSRobert Watson return (0); 185195fab37eSRobert Watson 185295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 185395fab37eSRobert Watson if (error) 185495fab37eSRobert Watson return (error); 185595fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 185695fab37eSRobert Watson 185795fab37eSRobert Watson return (error); 185895fab37eSRobert Watson } 185995fab37eSRobert Watson 186095fab37eSRobert Watson int 186195fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 186295fab37eSRobert Watson { 186395fab37eSRobert Watson int error; 186495fab37eSRobert Watson 186595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 186695fab37eSRobert Watson 186795fab37eSRobert Watson if (!mac_enforce_fs) 186895fab37eSRobert Watson return (0); 186995fab37eSRobert Watson 187095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 187195fab37eSRobert Watson if (error) 187295fab37eSRobert Watson return (error); 187395fab37eSRobert Watson 187495fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 187595fab37eSRobert Watson return (error); 187695fab37eSRobert Watson } 187795fab37eSRobert Watson 187895fab37eSRobert Watson int 187995fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 188095fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 188195fab37eSRobert Watson { 188295fab37eSRobert Watson int error; 188395fab37eSRobert Watson 188495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 188595fab37eSRobert Watson 188695fab37eSRobert Watson if (!mac_enforce_fs) 188795fab37eSRobert Watson return (0); 188895fab37eSRobert Watson 188995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 189095fab37eSRobert Watson if (error) 189195fab37eSRobert Watson return (error); 189295fab37eSRobert Watson 189395fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 189495fab37eSRobert Watson attrnamespace, name, uio); 189595fab37eSRobert Watson return (error); 189695fab37eSRobert Watson } 189795fab37eSRobert Watson 189895fab37eSRobert Watson int 18990a694196SRobert Watson mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 19000a694196SRobert Watson struct vnode *vp, struct componentname *cnp) 19010a694196SRobert Watson { 19020a694196SRobert Watson 19030a694196SRobert Watson int error; 19040a694196SRobert Watson 19050a694196SRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_link"); 19060a694196SRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_link"); 19070a694196SRobert Watson 19080a694196SRobert Watson if (!mac_enforce_fs) 19090a694196SRobert Watson return (0); 19100a694196SRobert Watson 19110a694196SRobert Watson error = vn_refreshlabel(dvp, cred); 19120a694196SRobert Watson if (error) 19130a694196SRobert Watson return (error); 19140a694196SRobert Watson 19150a694196SRobert Watson error = vn_refreshlabel(vp, cred); 19160a694196SRobert Watson if (error) 19170a694196SRobert Watson return (error); 19180a694196SRobert Watson 19190a694196SRobert Watson MAC_CHECK(check_vnode_link, cred, dvp, &dvp->v_label, vp, 19200a694196SRobert Watson &vp->v_label, cnp); 19210a694196SRobert Watson return (error); 19220a694196SRobert Watson } 19230a694196SRobert Watson 19240a694196SRobert Watson int 192595fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 192695fab37eSRobert Watson struct componentname *cnp) 192795fab37eSRobert Watson { 192895fab37eSRobert Watson int error; 192995fab37eSRobert Watson 193095fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 193195fab37eSRobert Watson 193295fab37eSRobert Watson if (!mac_enforce_fs) 193395fab37eSRobert Watson return (0); 193495fab37eSRobert Watson 193595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 193695fab37eSRobert Watson if (error) 193795fab37eSRobert Watson return (error); 193895fab37eSRobert Watson 193995fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 194095fab37eSRobert Watson return (error); 194195fab37eSRobert Watson } 194295fab37eSRobert Watson 194395fab37eSRobert Watson vm_prot_t 194495fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 194595fab37eSRobert Watson { 194695fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 194795fab37eSRobert Watson 1948ca7850c3SRobert Watson if (!mac_enforce_vm) 1949ca7850c3SRobert Watson return (result); 1950ca7850c3SRobert Watson 195195fab37eSRobert Watson /* 195295fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 195395fab37eSRobert Watson */ 195495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 195595fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 195695fab37eSRobert Watson newmapping); 195795fab37eSRobert Watson return (result); 195895fab37eSRobert Watson } 195995fab37eSRobert Watson 196095fab37eSRobert Watson int 196195fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 196295fab37eSRobert Watson { 196395fab37eSRobert Watson int error; 196495fab37eSRobert Watson 196595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 196695fab37eSRobert Watson 196795fab37eSRobert Watson if (!mac_enforce_fs) 196895fab37eSRobert Watson return (0); 196995fab37eSRobert Watson 197095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 197195fab37eSRobert Watson if (error) 197295fab37eSRobert Watson return (error); 197395fab37eSRobert Watson 197495fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 197595fab37eSRobert Watson return (error); 197695fab37eSRobert Watson } 197795fab37eSRobert Watson 197895fab37eSRobert Watson int 1979177142e4SRobert Watson mac_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1980177142e4SRobert Watson struct vnode *vp) 19817f724f8bSRobert Watson { 19827f724f8bSRobert Watson int error; 19837f724f8bSRobert Watson 19847f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 19857f724f8bSRobert Watson 19867f724f8bSRobert Watson if (!mac_enforce_fs) 19877f724f8bSRobert Watson return (0); 19887f724f8bSRobert Watson 1989177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 19907f724f8bSRobert Watson if (error) 19917f724f8bSRobert Watson return (error); 19927f724f8bSRobert Watson 1993177142e4SRobert Watson MAC_CHECK(check_vnode_poll, active_cred, file_cred, vp, 1994177142e4SRobert Watson &vp->v_label); 19957f724f8bSRobert Watson 19967f724f8bSRobert Watson return (error); 19977f724f8bSRobert Watson } 19987f724f8bSRobert Watson 19997f724f8bSRobert Watson int 2000177142e4SRobert Watson mac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 2001177142e4SRobert Watson struct vnode *vp) 20027f724f8bSRobert Watson { 20037f724f8bSRobert Watson int error; 20047f724f8bSRobert Watson 20057f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 20067f724f8bSRobert Watson 20077f724f8bSRobert Watson if (!mac_enforce_fs) 20087f724f8bSRobert Watson return (0); 20097f724f8bSRobert Watson 2010177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 20117f724f8bSRobert Watson if (error) 20127f724f8bSRobert Watson return (error); 20137f724f8bSRobert Watson 2014177142e4SRobert Watson MAC_CHECK(check_vnode_read, active_cred, file_cred, vp, 2015177142e4SRobert Watson &vp->v_label); 20167f724f8bSRobert Watson 20177f724f8bSRobert Watson return (error); 20187f724f8bSRobert Watson } 20197f724f8bSRobert Watson 20207f724f8bSRobert Watson int 202195fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 202295fab37eSRobert Watson { 202395fab37eSRobert Watson int error; 202495fab37eSRobert Watson 202595fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 202695fab37eSRobert Watson 202795fab37eSRobert Watson if (!mac_enforce_fs) 202895fab37eSRobert Watson return (0); 202995fab37eSRobert Watson 203095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 203195fab37eSRobert Watson if (error) 203295fab37eSRobert Watson return (error); 203395fab37eSRobert Watson 203495fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 203595fab37eSRobert Watson return (error); 203695fab37eSRobert Watson } 203795fab37eSRobert Watson 203895fab37eSRobert Watson int 203995fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 204095fab37eSRobert Watson { 204195fab37eSRobert Watson int error; 204295fab37eSRobert Watson 204395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 204495fab37eSRobert Watson 204595fab37eSRobert Watson if (!mac_enforce_fs) 204695fab37eSRobert Watson return (0); 204795fab37eSRobert Watson 204895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 204995fab37eSRobert Watson if (error) 205095fab37eSRobert Watson return (error); 205195fab37eSRobert Watson 205295fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 205395fab37eSRobert Watson return (error); 205495fab37eSRobert Watson } 205595fab37eSRobert Watson 205695fab37eSRobert Watson static int 205795fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 205895fab37eSRobert Watson struct label *newlabel) 205995fab37eSRobert Watson { 206095fab37eSRobert Watson int error; 206195fab37eSRobert Watson 206295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 206395fab37eSRobert Watson 206495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 206595fab37eSRobert Watson if (error) 206695fab37eSRobert Watson return (error); 206795fab37eSRobert Watson 206895fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 206995fab37eSRobert Watson 207095fab37eSRobert Watson return (error); 207195fab37eSRobert Watson } 207295fab37eSRobert Watson 207395fab37eSRobert Watson int 207495fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 207595fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 207695fab37eSRobert Watson { 207795fab37eSRobert Watson int error; 207895fab37eSRobert Watson 207995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 208095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 208195fab37eSRobert Watson 208295fab37eSRobert Watson if (!mac_enforce_fs) 208395fab37eSRobert Watson return (0); 208495fab37eSRobert Watson 208595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 208695fab37eSRobert Watson if (error) 208795fab37eSRobert Watson return (error); 208895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 208995fab37eSRobert Watson if (error) 209095fab37eSRobert Watson return (error); 209195fab37eSRobert Watson 209295fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 209395fab37eSRobert Watson &vp->v_label, cnp); 209495fab37eSRobert Watson return (error); 209595fab37eSRobert Watson } 209695fab37eSRobert Watson 209795fab37eSRobert Watson int 209895fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 209995fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 210095fab37eSRobert Watson { 210195fab37eSRobert Watson int error; 210295fab37eSRobert Watson 210395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 210495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 210595fab37eSRobert Watson 210695fab37eSRobert Watson if (!mac_enforce_fs) 210795fab37eSRobert Watson return (0); 210895fab37eSRobert Watson 210995fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 211095fab37eSRobert Watson if (error) 211195fab37eSRobert Watson return (error); 211295fab37eSRobert Watson if (vp != NULL) { 211395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 211495fab37eSRobert Watson if (error) 211595fab37eSRobert Watson return (error); 211695fab37eSRobert Watson } 211795fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 211895fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 211995fab37eSRobert Watson return (error); 212095fab37eSRobert Watson } 212195fab37eSRobert Watson 212295fab37eSRobert Watson int 212395fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 212495fab37eSRobert Watson { 212595fab37eSRobert Watson int error; 212695fab37eSRobert Watson 212795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 212895fab37eSRobert Watson 212995fab37eSRobert Watson if (!mac_enforce_fs) 213095fab37eSRobert Watson return (0); 213195fab37eSRobert Watson 213295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 213395fab37eSRobert Watson if (error) 213495fab37eSRobert Watson return (error); 213595fab37eSRobert Watson 213695fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 213795fab37eSRobert Watson return (error); 213895fab37eSRobert Watson } 213995fab37eSRobert Watson 214095fab37eSRobert Watson int 214195fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 214295fab37eSRobert Watson struct acl *acl) 214395fab37eSRobert Watson { 214495fab37eSRobert Watson int error; 214595fab37eSRobert Watson 214695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 214795fab37eSRobert Watson 214895fab37eSRobert Watson if (!mac_enforce_fs) 214995fab37eSRobert Watson return (0); 215095fab37eSRobert Watson 215195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 215295fab37eSRobert Watson if (error) 215395fab37eSRobert Watson return (error); 215495fab37eSRobert Watson 215595fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 215695fab37eSRobert Watson return (error); 215795fab37eSRobert Watson } 215895fab37eSRobert Watson 215995fab37eSRobert Watson int 216095fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 216195fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 216295fab37eSRobert Watson { 216395fab37eSRobert Watson int error; 216495fab37eSRobert Watson 216595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 216695fab37eSRobert Watson 216795fab37eSRobert Watson if (!mac_enforce_fs) 216895fab37eSRobert Watson return (0); 216995fab37eSRobert Watson 217095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 217195fab37eSRobert Watson if (error) 217295fab37eSRobert Watson return (error); 217395fab37eSRobert Watson 217495fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 217595fab37eSRobert Watson attrnamespace, name, uio); 217695fab37eSRobert Watson return (error); 217795fab37eSRobert Watson } 217895fab37eSRobert Watson 217995fab37eSRobert Watson int 218095fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 218195fab37eSRobert Watson { 218295fab37eSRobert Watson int error; 218395fab37eSRobert Watson 218495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 218595fab37eSRobert Watson 218695fab37eSRobert Watson if (!mac_enforce_fs) 218795fab37eSRobert Watson return (0); 218895fab37eSRobert Watson 218995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 219095fab37eSRobert Watson if (error) 219195fab37eSRobert Watson return (error); 219295fab37eSRobert Watson 219395fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 219495fab37eSRobert Watson return (error); 219595fab37eSRobert Watson } 219695fab37eSRobert Watson 219795fab37eSRobert Watson int 219895fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 219995fab37eSRobert Watson { 220095fab37eSRobert Watson int error; 220195fab37eSRobert Watson 220295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 220395fab37eSRobert Watson 220495fab37eSRobert Watson if (!mac_enforce_fs) 220595fab37eSRobert Watson return (0); 220695fab37eSRobert Watson 220795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 220895fab37eSRobert Watson if (error) 220995fab37eSRobert Watson return (error); 221095fab37eSRobert Watson 221195fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 221295fab37eSRobert Watson return (error); 221395fab37eSRobert Watson } 221495fab37eSRobert Watson 221595fab37eSRobert Watson int 221695fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 221795fab37eSRobert Watson gid_t gid) 221895fab37eSRobert Watson { 221995fab37eSRobert Watson int error; 222095fab37eSRobert Watson 222195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 222295fab37eSRobert Watson 222395fab37eSRobert Watson if (!mac_enforce_fs) 222495fab37eSRobert Watson return (0); 222595fab37eSRobert Watson 222695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 222795fab37eSRobert Watson if (error) 222895fab37eSRobert Watson return (error); 222995fab37eSRobert Watson 223095fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 223195fab37eSRobert Watson return (error); 223295fab37eSRobert Watson } 223395fab37eSRobert Watson 223495fab37eSRobert Watson int 223595fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 223695fab37eSRobert Watson struct timespec atime, struct timespec mtime) 223795fab37eSRobert Watson { 223895fab37eSRobert Watson int error; 223995fab37eSRobert Watson 224095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 224195fab37eSRobert Watson 224295fab37eSRobert Watson if (!mac_enforce_fs) 224395fab37eSRobert Watson return (0); 224495fab37eSRobert Watson 224595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 224695fab37eSRobert Watson if (error) 224795fab37eSRobert Watson return (error); 224895fab37eSRobert Watson 224995fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 225095fab37eSRobert Watson mtime); 225195fab37eSRobert Watson return (error); 225295fab37eSRobert Watson } 225395fab37eSRobert Watson 225495fab37eSRobert Watson int 2255177142e4SRobert Watson mac_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 2256177142e4SRobert Watson struct vnode *vp) 225795fab37eSRobert Watson { 225895fab37eSRobert Watson int error; 225995fab37eSRobert Watson 226095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 226195fab37eSRobert Watson 226295fab37eSRobert Watson if (!mac_enforce_fs) 226395fab37eSRobert Watson return (0); 226495fab37eSRobert Watson 2265177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 226695fab37eSRobert Watson if (error) 226795fab37eSRobert Watson return (error); 226895fab37eSRobert Watson 2269177142e4SRobert Watson MAC_CHECK(check_vnode_stat, active_cred, file_cred, vp, 2270177142e4SRobert Watson &vp->v_label); 227195fab37eSRobert Watson return (error); 227295fab37eSRobert Watson } 227395fab37eSRobert Watson 22747f724f8bSRobert Watson int 2275177142e4SRobert Watson mac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred, 2276177142e4SRobert Watson struct vnode *vp) 22777f724f8bSRobert Watson { 22787f724f8bSRobert Watson int error; 22797f724f8bSRobert Watson 22807f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 22817f724f8bSRobert Watson 22827f724f8bSRobert Watson if (!mac_enforce_fs) 22837f724f8bSRobert Watson return (0); 22847f724f8bSRobert Watson 2285177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 22867f724f8bSRobert Watson if (error) 22877f724f8bSRobert Watson return (error); 22887f724f8bSRobert Watson 2289177142e4SRobert Watson MAC_CHECK(check_vnode_write, active_cred, file_cred, vp, 2290177142e4SRobert Watson &vp->v_label); 22917f724f8bSRobert Watson 22927f724f8bSRobert Watson return (error); 22937f724f8bSRobert Watson } 22947f724f8bSRobert Watson 229595fab37eSRobert Watson /* 229695fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 229795fab37eSRobert Watson * permission allowed for each object type we know about in its 229895fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 229995fab37eSRobert Watson * know) when necessary. The process lock is not held here. 230095fab37eSRobert Watson */ 230195fab37eSRobert Watson static void 230295fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 230395fab37eSRobert Watson { 230495fab37eSRobert Watson 230595fab37eSRobert Watson /* XXX freeze all other threads */ 230695fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 230795fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 230895fab37eSRobert Watson /* XXX allow other threads to continue */ 230995fab37eSRobert Watson } 231095fab37eSRobert Watson 231195fab37eSRobert Watson static __inline const char * 231295fab37eSRobert Watson prot2str(vm_prot_t prot) 231395fab37eSRobert Watson { 231495fab37eSRobert Watson 231595fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 231695fab37eSRobert Watson case VM_PROT_READ: 231795fab37eSRobert Watson return ("r--"); 231895fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 231995fab37eSRobert Watson return ("rw-"); 232095fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 232195fab37eSRobert Watson return ("r-x"); 232295fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 232395fab37eSRobert Watson return ("rwx"); 232495fab37eSRobert Watson case VM_PROT_WRITE: 232595fab37eSRobert Watson return ("-w-"); 232695fab37eSRobert Watson case VM_PROT_EXECUTE: 232795fab37eSRobert Watson return ("--x"); 232895fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 232995fab37eSRobert Watson return ("-wx"); 233095fab37eSRobert Watson default: 233195fab37eSRobert Watson return ("---"); 233295fab37eSRobert Watson } 233395fab37eSRobert Watson } 233495fab37eSRobert Watson 233595fab37eSRobert Watson static void 233695fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 233795fab37eSRobert Watson struct vm_map *map) 233895fab37eSRobert Watson { 233995fab37eSRobert Watson struct vm_map_entry *vme; 234095fab37eSRobert Watson vm_prot_t result, revokeperms; 234195fab37eSRobert Watson vm_object_t object; 234295fab37eSRobert Watson vm_ooffset_t offset; 234395fab37eSRobert Watson struct vnode *vp; 234495fab37eSRobert Watson 2345c0f39905SRobert Watson if (!mac_mmap_revocation) 2346c0f39905SRobert Watson return; 2347c0f39905SRobert Watson 234895fab37eSRobert Watson vm_map_lock_read(map); 234995fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 235095fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 235195fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 235295fab37eSRobert Watson vme->object.sub_map); 235395fab37eSRobert Watson continue; 235495fab37eSRobert Watson } 235595fab37eSRobert Watson /* 235695fab37eSRobert Watson * Skip over entries that obviously are not shared. 235795fab37eSRobert Watson */ 235895fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 235995fab37eSRobert Watson !vme->max_protection) 236095fab37eSRobert Watson continue; 236195fab37eSRobert Watson /* 236295fab37eSRobert Watson * Drill down to the deepest backing object. 236395fab37eSRobert Watson */ 236495fab37eSRobert Watson offset = vme->offset; 236595fab37eSRobert Watson object = vme->object.vm_object; 236695fab37eSRobert Watson if (object == NULL) 236795fab37eSRobert Watson continue; 236895fab37eSRobert Watson while (object->backing_object != NULL) { 236995fab37eSRobert Watson object = object->backing_object; 237095fab37eSRobert Watson offset += object->backing_object_offset; 237195fab37eSRobert Watson } 237295fab37eSRobert Watson /* 237395fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 237495fab37eSRobert Watson * by the MAC system, so only things with backing by a 237595fab37eSRobert Watson * normal object (read: vnodes) are checked. 237695fab37eSRobert Watson */ 237795fab37eSRobert Watson if (object->type != OBJT_VNODE) 237895fab37eSRobert Watson continue; 237995fab37eSRobert Watson vp = (struct vnode *)object->handle; 238095fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 238195fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 238295fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 238395fab37eSRobert Watson /* 238495fab37eSRobert Watson * Find out what maximum protection we may be allowing 238595fab37eSRobert Watson * now but a policy needs to get removed. 238695fab37eSRobert Watson */ 238795fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 238895fab37eSRobert Watson if (!revokeperms) 238995fab37eSRobert Watson continue; 2390b656366bSBruce Evans printf("pid %ld: revoking %s perms from %#lx:%ld " 2391b656366bSBruce Evans "(max %s/cur %s)\n", (long)td->td_proc->p_pid, 2392b656366bSBruce Evans prot2str(revokeperms), (u_long)vme->start, 2393b656366bSBruce Evans (long)(vme->end - vme->start), 239495fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 239595fab37eSRobert Watson vm_map_lock_upgrade(map); 239695fab37eSRobert Watson /* 239795fab37eSRobert Watson * This is the really simple case: if a map has more 239895fab37eSRobert Watson * max_protection than is allowed, but it's not being 239995fab37eSRobert Watson * actually used (that is, the current protection is 240095fab37eSRobert Watson * still allowed), we can just wipe it out and do 240195fab37eSRobert Watson * nothing more. 240295fab37eSRobert Watson */ 240395fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 240495fab37eSRobert Watson vme->max_protection -= revokeperms; 240595fab37eSRobert Watson } else { 240695fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 240795fab37eSRobert Watson /* 240895fab37eSRobert Watson * In the more complicated case, flush out all 240995fab37eSRobert Watson * pending changes to the object then turn it 241095fab37eSRobert Watson * copy-on-write. 241195fab37eSRobert Watson */ 241295fab37eSRobert Watson vm_object_reference(object); 241395fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 241495fab37eSRobert Watson vm_object_page_clean(object, 241595fab37eSRobert Watson OFF_TO_IDX(offset), 241695fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 241795fab37eSRobert Watson PAGE_MASK), 241895fab37eSRobert Watson OBJPC_SYNC); 241995fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 242095fab37eSRobert Watson vm_object_deallocate(object); 242195fab37eSRobert Watson /* 242295fab37eSRobert Watson * Why bother if there's no read permissions 242395fab37eSRobert Watson * anymore? For the rest, we need to leave 242495fab37eSRobert Watson * the write permissions on for COW, or 242595fab37eSRobert Watson * remove them entirely if configured to. 242695fab37eSRobert Watson */ 242795fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 242895fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 242995fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 243095fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 243195fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 243295fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 243395fab37eSRobert Watson } 243495fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 243595fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 243695fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 243795fab37eSRobert Watson } 243895fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 243995fab37eSRobert Watson vme->max_protection = 0; 244095fab37eSRobert Watson vme->protection = 0; 244195fab37eSRobert Watson } 244295fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 244395fab37eSRobert Watson vme->protection & ~revokeperms); 244495fab37eSRobert Watson vm_map_simplify_entry(map, vme); 244595fab37eSRobert Watson } 244695fab37eSRobert Watson vm_map_lock_downgrade(map); 244795fab37eSRobert Watson } 244895fab37eSRobert Watson vm_map_unlock_read(map); 244995fab37eSRobert Watson } 245095fab37eSRobert Watson 245195fab37eSRobert Watson /* 245295fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 245395fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 245495fab37eSRobert Watson * buffer cache. 245595fab37eSRobert Watson */ 245695fab37eSRobert Watson static void 245795fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 245895fab37eSRobert Watson { 245995fab37eSRobert Watson 246095fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 246195fab37eSRobert Watson } 246295fab37eSRobert Watson 246395fab37eSRobert Watson void 246495fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 246595fab37eSRobert Watson { 246695fab37eSRobert Watson 246795fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 246895fab37eSRobert Watson } 246995fab37eSRobert Watson 247095fab37eSRobert Watson void 247195fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 247295fab37eSRobert Watson { 247395fab37eSRobert Watson 247495fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 247595fab37eSRobert Watson } 247695fab37eSRobert Watson 247795fab37eSRobert Watson void 247895fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 247995fab37eSRobert Watson { 248095fab37eSRobert Watson 248195fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 248295fab37eSRobert Watson } 248395fab37eSRobert Watson 248495fab37eSRobert Watson void 248595fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 248695fab37eSRobert Watson { 248795fab37eSRobert Watson 248895fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 248995fab37eSRobert Watson } 249095fab37eSRobert Watson 249195fab37eSRobert Watson void 249295fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 249395fab37eSRobert Watson { 249495fab37eSRobert Watson 249595fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 249695fab37eSRobert Watson } 249795fab37eSRobert Watson 249895fab37eSRobert Watson void 249995fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 250095fab37eSRobert Watson struct socket *newsocket) 250195fab37eSRobert Watson { 250295fab37eSRobert Watson 250395fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 250495fab37eSRobert Watson newsocket, &newsocket->so_label); 250595fab37eSRobert Watson } 250695fab37eSRobert Watson 250795fab37eSRobert Watson static void 250895fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 250995fab37eSRobert Watson struct label *newlabel) 251095fab37eSRobert Watson { 251195fab37eSRobert Watson 251295fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 251395fab37eSRobert Watson } 251495fab37eSRobert Watson 251595fab37eSRobert Watson static void 251695fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 251795fab37eSRobert Watson { 251895fab37eSRobert Watson 251995fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 252095fab37eSRobert Watson } 252195fab37eSRobert Watson 252295fab37eSRobert Watson void 252395fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 252495fab37eSRobert Watson { 252595fab37eSRobert Watson 252695fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 252795fab37eSRobert Watson socket, &socket->so_peerlabel); 252895fab37eSRobert Watson } 252995fab37eSRobert Watson 253095fab37eSRobert Watson void 253195fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 253295fab37eSRobert Watson struct socket *newsocket) 253395fab37eSRobert Watson { 253495fab37eSRobert Watson 253595fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 253695fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 253795fab37eSRobert Watson } 253895fab37eSRobert Watson 253995fab37eSRobert Watson void 254095fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 254195fab37eSRobert Watson { 254295fab37eSRobert Watson 254395fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 254495fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 254595fab37eSRobert Watson } 254695fab37eSRobert Watson 254795fab37eSRobert Watson void 254895fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 254995fab37eSRobert Watson { 255095fab37eSRobert Watson 255195fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 255295fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 255395fab37eSRobert Watson } 255495fab37eSRobert Watson 255595fab37eSRobert Watson void 255695fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 255795fab37eSRobert Watson { 255895fab37eSRobert Watson 255995fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 256095fab37eSRobert Watson &ipq->ipq_label); 256195fab37eSRobert Watson } 256295fab37eSRobert Watson 256395fab37eSRobert Watson void 256495fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 256595fab37eSRobert Watson { 256695fab37eSRobert Watson 256795fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 256895fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 256995fab37eSRobert Watson } 257095fab37eSRobert Watson 257195fab37eSRobert Watson void 257295fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 257395fab37eSRobert Watson { 257495fab37eSRobert Watson 257595fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 257695fab37eSRobert Watson &mbuf->m_pkthdr.label); 257795fab37eSRobert Watson } 257895fab37eSRobert Watson 257995fab37eSRobert Watson void 258095fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 258195fab37eSRobert Watson { 258295fab37eSRobert Watson 258395fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 258495fab37eSRobert Watson &mbuf->m_pkthdr.label); 258595fab37eSRobert Watson } 258695fab37eSRobert Watson 258795fab37eSRobert Watson void 258895fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 258995fab37eSRobert Watson { 259095fab37eSRobert Watson 259195fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 259295fab37eSRobert Watson &mbuf->m_pkthdr.label); 259395fab37eSRobert Watson } 259495fab37eSRobert Watson 259595fab37eSRobert Watson void 259695fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 259795fab37eSRobert Watson struct mbuf *newmbuf) 259895fab37eSRobert Watson { 259995fab37eSRobert Watson 260095fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 260195fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 260295fab37eSRobert Watson &newmbuf->m_pkthdr.label); 260395fab37eSRobert Watson } 260495fab37eSRobert Watson 260595fab37eSRobert Watson void 260695fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 260795fab37eSRobert Watson { 260895fab37eSRobert Watson 260995fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 261095fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 261195fab37eSRobert Watson } 261295fab37eSRobert Watson 261395fab37eSRobert Watson int 261495fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 261595fab37eSRobert Watson { 261695fab37eSRobert Watson int result; 261795fab37eSRobert Watson 261895fab37eSRobert Watson result = 1; 261995fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 262095fab37eSRobert Watson ipq, &ipq->ipq_label); 262195fab37eSRobert Watson 262295fab37eSRobert Watson return (result); 262395fab37eSRobert Watson } 262495fab37eSRobert Watson 262595fab37eSRobert Watson void 262695fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 262795fab37eSRobert Watson { 262895fab37eSRobert Watson 262995fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 263095fab37eSRobert Watson &ipq->ipq_label); 263195fab37eSRobert Watson } 263295fab37eSRobert Watson 263395fab37eSRobert Watson void 263495fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 263595fab37eSRobert Watson { 263695fab37eSRobert Watson 263795fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 263895fab37eSRobert Watson &mbuf->m_pkthdr.label); 263995fab37eSRobert Watson } 264095fab37eSRobert Watson 264195fab37eSRobert Watson void 264295fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 264395fab37eSRobert Watson { 264495fab37eSRobert Watson 264595fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 264695fab37eSRobert Watson &mp->mnt_fslabel); 264795fab37eSRobert Watson } 264895fab37eSRobert Watson 264995fab37eSRobert Watson void 265095fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 265195fab37eSRobert Watson { 265295fab37eSRobert Watson 265395fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 265495fab37eSRobert Watson &mp->mnt_fslabel); 265595fab37eSRobert Watson } 265695fab37eSRobert Watson 265795fab37eSRobert Watson int 265895fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 265995fab37eSRobert Watson { 266095fab37eSRobert Watson int error; 266195fab37eSRobert Watson 266295fab37eSRobert Watson if (!mac_enforce_network) 266395fab37eSRobert Watson return (0); 266495fab37eSRobert Watson 266595fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 266695fab37eSRobert Watson &ifnet->if_label); 266795fab37eSRobert Watson 266895fab37eSRobert Watson return (error); 266995fab37eSRobert Watson } 267095fab37eSRobert Watson 267195fab37eSRobert Watson static int 267295fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 267395fab37eSRobert Watson { 267495fab37eSRobert Watson int error; 267595fab37eSRobert Watson 267695fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 267795fab37eSRobert Watson 267895fab37eSRobert Watson return (error); 267995fab37eSRobert Watson } 268095fab37eSRobert Watson 268195fab37eSRobert Watson int 268295fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 268395fab37eSRobert Watson { 268495fab37eSRobert Watson int error; 268595fab37eSRobert Watson 268695fab37eSRobert Watson if (!mac_enforce_process) 268795fab37eSRobert Watson return (0); 268895fab37eSRobert Watson 268995fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 269095fab37eSRobert Watson 269195fab37eSRobert Watson return (error); 269295fab37eSRobert Watson } 269395fab37eSRobert Watson 269495fab37eSRobert Watson int 269595fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 269695fab37eSRobert Watson { 269795fab37eSRobert Watson int error; 269895fab37eSRobert Watson 269995fab37eSRobert Watson if (!mac_enforce_network) 270095fab37eSRobert Watson return (0); 270195fab37eSRobert Watson 270295fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 270395fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 270495fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 270595fab37eSRobert Watson ifnet->if_unit); 270695fab37eSRobert Watson 270795fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 270895fab37eSRobert Watson &mbuf->m_pkthdr.label); 270995fab37eSRobert Watson 271095fab37eSRobert Watson return (error); 271195fab37eSRobert Watson } 271295fab37eSRobert Watson 271395fab37eSRobert Watson int 271495fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 271595fab37eSRobert Watson { 271695fab37eSRobert Watson int error; 271795fab37eSRobert Watson 271895fab37eSRobert Watson if (!mac_enforce_fs) 271995fab37eSRobert Watson return (0); 272095fab37eSRobert Watson 272195fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 272295fab37eSRobert Watson 272395fab37eSRobert Watson return (error); 272495fab37eSRobert Watson } 272595fab37eSRobert Watson 272695fab37eSRobert Watson int 272795fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 272895fab37eSRobert Watson void *data) 272995fab37eSRobert Watson { 273095fab37eSRobert Watson int error; 273195fab37eSRobert Watson 27321aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27331aa37f53SRobert Watson 27341aa37f53SRobert Watson if (!mac_enforce_pipe) 27351aa37f53SRobert Watson return (0); 27361aa37f53SRobert Watson 273795fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 273895fab37eSRobert Watson 273995fab37eSRobert Watson return (error); 274095fab37eSRobert Watson } 274195fab37eSRobert Watson 274295fab37eSRobert Watson int 2743c024c3eeSRobert Watson mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe) 274495fab37eSRobert Watson { 274595fab37eSRobert Watson int error; 274695fab37eSRobert Watson 27471aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27481aa37f53SRobert Watson 27491aa37f53SRobert Watson if (!mac_enforce_pipe) 27501aa37f53SRobert Watson return (0); 27511aa37f53SRobert Watson 2752c024c3eeSRobert Watson MAC_CHECK(check_pipe_poll, cred, pipe, pipe->pipe_label); 2753c024c3eeSRobert Watson 2754c024c3eeSRobert Watson return (error); 2755c024c3eeSRobert Watson } 2756c024c3eeSRobert Watson 2757c024c3eeSRobert Watson int 2758c024c3eeSRobert Watson mac_check_pipe_read(struct ucred *cred, struct pipe *pipe) 2759c024c3eeSRobert Watson { 2760c024c3eeSRobert Watson int error; 2761c024c3eeSRobert Watson 27621aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27631aa37f53SRobert Watson 27641aa37f53SRobert Watson if (!mac_enforce_pipe) 27651aa37f53SRobert Watson return (0); 27661aa37f53SRobert Watson 2767c024c3eeSRobert Watson MAC_CHECK(check_pipe_read, cred, pipe, pipe->pipe_label); 276895fab37eSRobert Watson 276995fab37eSRobert Watson return (error); 277095fab37eSRobert Watson } 277195fab37eSRobert Watson 277295fab37eSRobert Watson static int 277395fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 277495fab37eSRobert Watson struct label *newlabel) 277595fab37eSRobert Watson { 277695fab37eSRobert Watson int error; 277795fab37eSRobert Watson 27781aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27791aa37f53SRobert Watson 27801aa37f53SRobert Watson if (!mac_enforce_pipe) 27811aa37f53SRobert Watson return (0); 27821aa37f53SRobert Watson 278395fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 278495fab37eSRobert Watson 278595fab37eSRobert Watson return (error); 278695fab37eSRobert Watson } 278795fab37eSRobert Watson 278895fab37eSRobert Watson int 2789c024c3eeSRobert Watson mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe) 2790c024c3eeSRobert Watson { 2791c024c3eeSRobert Watson int error; 2792c024c3eeSRobert Watson 27931aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27941aa37f53SRobert Watson 27951aa37f53SRobert Watson if (!mac_enforce_pipe) 27961aa37f53SRobert Watson return (0); 27971aa37f53SRobert Watson 2798c024c3eeSRobert Watson MAC_CHECK(check_pipe_stat, cred, pipe, pipe->pipe_label); 2799c024c3eeSRobert Watson 2800c024c3eeSRobert Watson return (error); 2801c024c3eeSRobert Watson } 2802c024c3eeSRobert Watson 2803c024c3eeSRobert Watson int 2804c024c3eeSRobert Watson mac_check_pipe_write(struct ucred *cred, struct pipe *pipe) 2805c024c3eeSRobert Watson { 2806c024c3eeSRobert Watson int error; 2807c024c3eeSRobert Watson 28081aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 28091aa37f53SRobert Watson 28101aa37f53SRobert Watson if (!mac_enforce_pipe) 28111aa37f53SRobert Watson return (0); 28121aa37f53SRobert Watson 2813c024c3eeSRobert Watson MAC_CHECK(check_pipe_write, cred, pipe, pipe->pipe_label); 2814c024c3eeSRobert Watson 2815c024c3eeSRobert Watson return (error); 2816c024c3eeSRobert Watson } 2817c024c3eeSRobert Watson 2818c024c3eeSRobert Watson int 281995fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 282095fab37eSRobert Watson { 282195fab37eSRobert Watson int error; 282295fab37eSRobert Watson 2823b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2824b12baf55SRobert Watson 282595fab37eSRobert Watson if (!mac_enforce_process) 282695fab37eSRobert Watson return (0); 282795fab37eSRobert Watson 282895fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 282995fab37eSRobert Watson 283095fab37eSRobert Watson return (error); 283195fab37eSRobert Watson } 283295fab37eSRobert Watson 283395fab37eSRobert Watson int 283495fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 283595fab37eSRobert Watson { 283695fab37eSRobert Watson int error; 283795fab37eSRobert Watson 2838b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2839b12baf55SRobert Watson 284095fab37eSRobert Watson if (!mac_enforce_process) 284195fab37eSRobert Watson return (0); 284295fab37eSRobert Watson 284395fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 284495fab37eSRobert Watson 284595fab37eSRobert Watson return (error); 284695fab37eSRobert Watson } 284795fab37eSRobert Watson 284895fab37eSRobert Watson int 284995fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 285095fab37eSRobert Watson { 285195fab37eSRobert Watson int error; 285295fab37eSRobert Watson 2853b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2854b12baf55SRobert Watson 285595fab37eSRobert Watson if (!mac_enforce_process) 285695fab37eSRobert Watson return (0); 285795fab37eSRobert Watson 285895fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 285995fab37eSRobert Watson 286095fab37eSRobert Watson return (error); 286195fab37eSRobert Watson } 286295fab37eSRobert Watson 286395fab37eSRobert Watson int 286495fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 286595fab37eSRobert Watson struct sockaddr *sockaddr) 286695fab37eSRobert Watson { 286795fab37eSRobert Watson int error; 286895fab37eSRobert Watson 286995fab37eSRobert Watson if (!mac_enforce_socket) 287095fab37eSRobert Watson return (0); 287195fab37eSRobert Watson 287295fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 287395fab37eSRobert Watson sockaddr); 287495fab37eSRobert Watson 287595fab37eSRobert Watson return (error); 287695fab37eSRobert Watson } 287795fab37eSRobert Watson 287895fab37eSRobert Watson int 287995fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 288095fab37eSRobert Watson struct sockaddr *sockaddr) 288195fab37eSRobert Watson { 288295fab37eSRobert Watson int error; 288395fab37eSRobert Watson 288495fab37eSRobert Watson if (!mac_enforce_socket) 288595fab37eSRobert Watson return (0); 288695fab37eSRobert Watson 288795fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 288895fab37eSRobert Watson sockaddr); 288995fab37eSRobert Watson 289095fab37eSRobert Watson return (error); 289195fab37eSRobert Watson } 289295fab37eSRobert Watson 289395fab37eSRobert Watson int 2894d61198e4SRobert Watson mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2895d61198e4SRobert Watson { 2896d61198e4SRobert Watson int error; 2897d61198e4SRobert Watson 2898d61198e4SRobert Watson if (!mac_enforce_socket) 2899d61198e4SRobert Watson return (0); 2900d61198e4SRobert Watson 2901d61198e4SRobert Watson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2902d61198e4SRobert Watson &mbuf->m_pkthdr.label); 2903d61198e4SRobert Watson 2904d61198e4SRobert Watson return (error); 2905d61198e4SRobert Watson } 2906d61198e4SRobert Watson 2907d61198e4SRobert Watson int 290895fab37eSRobert Watson mac_check_socket_listen(struct ucred *cred, struct socket *socket) 290995fab37eSRobert Watson { 291095fab37eSRobert Watson int error; 291195fab37eSRobert Watson 291295fab37eSRobert Watson if (!mac_enforce_socket) 291395fab37eSRobert Watson return (0); 291495fab37eSRobert Watson 291595fab37eSRobert Watson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 291695fab37eSRobert Watson return (error); 291795fab37eSRobert Watson } 291895fab37eSRobert Watson 291995fab37eSRobert Watson static int 292095fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 292195fab37eSRobert Watson struct label *newlabel) 292295fab37eSRobert Watson { 292395fab37eSRobert Watson int error; 292495fab37eSRobert Watson 292595fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 292695fab37eSRobert Watson newlabel); 292795fab37eSRobert Watson 292895fab37eSRobert Watson return (error); 292995fab37eSRobert Watson } 293095fab37eSRobert Watson 293195fab37eSRobert Watson int 293295fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 293395fab37eSRobert Watson { 293495fab37eSRobert Watson int error; 293595fab37eSRobert Watson 293695fab37eSRobert Watson if (!mac_enforce_socket) 293795fab37eSRobert Watson return (0); 293895fab37eSRobert Watson 293995fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 294095fab37eSRobert Watson 294195fab37eSRobert Watson return (error); 294295fab37eSRobert Watson } 294395fab37eSRobert Watson 294495fab37eSRobert Watson int 294595fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 294695fab37eSRobert Watson struct ifnet *ifnet) 294795fab37eSRobert Watson { 294895fab37eSRobert Watson struct mac label; 294995fab37eSRobert Watson int error; 295095fab37eSRobert Watson 295195fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 295295fab37eSRobert Watson if (error) 295395fab37eSRobert Watson return (error); 295495fab37eSRobert Watson 295595fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 295695fab37eSRobert Watson } 295795fab37eSRobert Watson 295895fab37eSRobert Watson int 295995fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 296095fab37eSRobert Watson struct ifnet *ifnet) 296195fab37eSRobert Watson { 296295fab37eSRobert Watson struct mac newlabel; 296395fab37eSRobert Watson struct label intlabel; 296495fab37eSRobert Watson int error; 296595fab37eSRobert Watson 296695fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 296795fab37eSRobert Watson if (error) 296895fab37eSRobert Watson return (error); 296995fab37eSRobert Watson 297095fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 297195fab37eSRobert Watson if (error) 297295fab37eSRobert Watson return (error); 297395fab37eSRobert Watson 297495fab37eSRobert Watson /* 297595fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 297695fab37eSRobert Watson * policies impose this check themselves if required by the 297795fab37eSRobert Watson * policy. Eventually, this should go away. 297895fab37eSRobert Watson */ 297995fab37eSRobert Watson error = suser_cred(cred, 0); 298095fab37eSRobert Watson if (error) 298195fab37eSRobert Watson goto out; 298295fab37eSRobert Watson 298395fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 298495fab37eSRobert Watson &intlabel); 298595fab37eSRobert Watson if (error) 298695fab37eSRobert Watson goto out; 298795fab37eSRobert Watson 298895fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 298995fab37eSRobert Watson 299095fab37eSRobert Watson out: 299195fab37eSRobert Watson mac_destroy_temp(&intlabel); 299295fab37eSRobert Watson return (error); 299395fab37eSRobert Watson } 299495fab37eSRobert Watson 299595fab37eSRobert Watson void 299695fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 299795fab37eSRobert Watson { 299895fab37eSRobert Watson 299995fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 300095fab37eSRobert Watson } 300195fab37eSRobert Watson 300295fab37eSRobert Watson void 300395fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 300495fab37eSRobert Watson { 300595fab37eSRobert Watson 300695fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 300795fab37eSRobert Watson } 300895fab37eSRobert Watson 300974e62b1bSRobert Watson void 301074e62b1bSRobert Watson mac_create_devfs_symlink(struct ucred *cred, struct devfs_dirent *dd, 301174e62b1bSRobert Watson struct devfs_dirent *de) 301274e62b1bSRobert Watson { 301374e62b1bSRobert Watson 301474e62b1bSRobert Watson MAC_PERFORM(create_devfs_symlink, cred, dd, &dd->de_label, de, 301574e62b1bSRobert Watson &de->de_label); 301674e62b1bSRobert Watson } 301774e62b1bSRobert Watson 301895fab37eSRobert Watson static int 301995fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 302095fab37eSRobert Watson { 302195fab37eSRobert Watson int error; 302295fab37eSRobert Watson 302395fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 302495fab37eSRobert Watson 302595fab37eSRobert Watson return (error); 302695fab37eSRobert Watson } 302795fab37eSRobert Watson 302895fab37eSRobert Watson void 302995fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 303095fab37eSRobert Watson struct devfs_dirent *de) 303195fab37eSRobert Watson { 303295fab37eSRobert Watson 303395fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 303495fab37eSRobert Watson &de->de_label); 303595fab37eSRobert Watson } 303695fab37eSRobert Watson 303795fab37eSRobert Watson /* 303895fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 303995fab37eSRobert Watson */ 304095fab37eSRobert Watson void 304195fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 304295fab37eSRobert Watson struct vnode *child) 304395fab37eSRobert Watson { 304495fab37eSRobert Watson int error; 304595fab37eSRobert Watson 304695fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 304795fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 304895fab37eSRobert Watson 304995fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 305095fab37eSRobert Watson if (error) { 305195fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 305295fab37eSRobert Watson error); 305395fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 305495fab37eSRobert Watson } 305595fab37eSRobert Watson 305695fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 305795fab37eSRobert Watson &child->v_label); 305895fab37eSRobert Watson } 305995fab37eSRobert Watson 306095fab37eSRobert Watson int 306195fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 306295fab37eSRobert Watson struct mac *extmac) 306395fab37eSRobert Watson { 306495fab37eSRobert Watson struct label intlabel; 306595fab37eSRobert Watson int error; 306695fab37eSRobert Watson 306795fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 306895fab37eSRobert Watson if (error) 306995fab37eSRobert Watson return (error); 307095fab37eSRobert Watson 307195fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 307295fab37eSRobert Watson if (error) { 307395fab37eSRobert Watson mac_destroy_temp(&intlabel); 307495fab37eSRobert Watson return (error); 307595fab37eSRobert Watson } 307695fab37eSRobert Watson 307795fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 307895fab37eSRobert Watson 307995fab37eSRobert Watson mac_destroy_temp(&intlabel); 308095fab37eSRobert Watson return (0); 308195fab37eSRobert Watson } 308295fab37eSRobert Watson 308395fab37eSRobert Watson int 308495fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 308595fab37eSRobert Watson { 308695fab37eSRobert Watson int error; 308795fab37eSRobert Watson 30881aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 30891aa37f53SRobert Watson 309095fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 309195fab37eSRobert Watson if (error) 309295fab37eSRobert Watson return (error); 309395fab37eSRobert Watson 309495fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 309595fab37eSRobert Watson 309695fab37eSRobert Watson return (0); 309795fab37eSRobert Watson } 309895fab37eSRobert Watson 309995fab37eSRobert Watson int 310095fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 310195fab37eSRobert Watson struct mac *extmac) 310295fab37eSRobert Watson { 310395fab37eSRobert Watson 310495fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 310595fab37eSRobert Watson } 310695fab37eSRobert Watson 310795fab37eSRobert Watson int 310895fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 310995fab37eSRobert Watson struct mac *extmac) 311095fab37eSRobert Watson { 311195fab37eSRobert Watson 311295fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 311395fab37eSRobert Watson } 311495fab37eSRobert Watson 311595fab37eSRobert Watson /* 311695fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 311795fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 311895fab37eSRobert Watson * extended attributes. 311995fab37eSRobert Watson */ 312095fab37eSRobert Watson int 312195fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 312295fab37eSRobert Watson { 312395fab37eSRobert Watson struct vnode *vp = ap->a_vp; 312495fab37eSRobert Watson struct label *intlabel = ap->a_label; 312595fab37eSRobert Watson struct mac extmac; 312695fab37eSRobert Watson int error; 312795fab37eSRobert Watson 312895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 312995fab37eSRobert Watson 313095fab37eSRobert Watson /* 313195fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 313295fab37eSRobert Watson * Be particularly careful to avoid race conditions, 313395fab37eSRobert Watson * consistency problems, and stability problems when 313495fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 313595fab37eSRobert Watson * the ability to write multiple EAs on the same file in 313695fab37eSRobert Watson * a single transaction, which the current EA interface 313795fab37eSRobert Watson * does not provide. 313895fab37eSRobert Watson */ 313995fab37eSRobert Watson 314095fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 314195fab37eSRobert Watson if (error) 314295fab37eSRobert Watson return (error); 314395fab37eSRobert Watson 314495fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 314595fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 314695fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 314795fab37eSRobert Watson if (error) 314895fab37eSRobert Watson return (error); 314995fab37eSRobert Watson 315095fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 315195fab37eSRobert Watson 3152e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 315395fab37eSRobert Watson 315495fab37eSRobert Watson return (0); 315595fab37eSRobert Watson } 315695fab37eSRobert Watson 315795fab37eSRobert Watson static int 315895fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 315995fab37eSRobert Watson { 316095fab37eSRobert Watson int error; 316195fab37eSRobert Watson 316295fab37eSRobert Watson if (vp->v_mount == NULL) { 316395fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 316406be2aaaSNate Lawson if (vp->v_type != VNON) 316506be2aaaSNate Lawson printf("vn_setlabel: null v_mount with non-VNON\n"); 316695fab37eSRobert Watson return (EBADF); 316795fab37eSRobert Watson } 316895fab37eSRobert Watson 316995fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 317095fab37eSRobert Watson return (EOPNOTSUPP); 317195fab37eSRobert Watson 317295fab37eSRobert Watson /* 317395fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 317495fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 317595fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 317695fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 317795fab37eSRobert Watson */ 317895fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 317995fab37eSRobert Watson if (error) 318095fab37eSRobert Watson return (error); 318195fab37eSRobert Watson 318295fab37eSRobert Watson /* 318395fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 318495fab37eSRobert Watson * decisions about who is and is not able to modify labels 318595fab37eSRobert Watson * and protections on files. This might not be right. We can't 318695fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 318795fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 318895fab37eSRobert Watson */ 318995fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 319095fab37eSRobert Watson if (error) 319195fab37eSRobert Watson return (error); 319295fab37eSRobert Watson 319395fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 319495fab37eSRobert Watson if (error) 319595fab37eSRobert Watson return (error); 319695fab37eSRobert Watson 319795fab37eSRobert Watson return (0); 319895fab37eSRobert Watson } 319995fab37eSRobert Watson 320095fab37eSRobert Watson /* 320195fab37eSRobert Watson * MPSAFE 320295fab37eSRobert Watson */ 320395fab37eSRobert Watson int 320495fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 320595fab37eSRobert Watson { 320695fab37eSRobert Watson struct mac extmac; 320795fab37eSRobert Watson int error; 320895fab37eSRobert Watson 320995fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 321095fab37eSRobert Watson if (error == 0) 321195fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 321295fab37eSRobert Watson 321395fab37eSRobert Watson return (error); 321495fab37eSRobert Watson } 321595fab37eSRobert Watson 321695fab37eSRobert Watson /* 321795fab37eSRobert Watson * MPSAFE 321895fab37eSRobert Watson */ 321995fab37eSRobert Watson int 322095fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 322195fab37eSRobert Watson { 322295fab37eSRobert Watson struct ucred *newcred, *oldcred; 322395fab37eSRobert Watson struct proc *p; 322495fab37eSRobert Watson struct mac extmac; 322595fab37eSRobert Watson struct label intlabel; 322695fab37eSRobert Watson int error; 322795fab37eSRobert Watson 322895fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 322995fab37eSRobert Watson if (error) 323095fab37eSRobert Watson return (error); 323195fab37eSRobert Watson 323295fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 323395fab37eSRobert Watson if (error) 323495fab37eSRobert Watson return (error); 323595fab37eSRobert Watson 323695fab37eSRobert Watson newcred = crget(); 323795fab37eSRobert Watson 323895fab37eSRobert Watson p = td->td_proc; 323995fab37eSRobert Watson PROC_LOCK(p); 324095fab37eSRobert Watson oldcred = p->p_ucred; 324195fab37eSRobert Watson 324295fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 324395fab37eSRobert Watson if (error) { 324495fab37eSRobert Watson PROC_UNLOCK(p); 324595fab37eSRobert Watson mac_destroy_temp(&intlabel); 324695fab37eSRobert Watson crfree(newcred); 324795fab37eSRobert Watson return (error); 324895fab37eSRobert Watson } 324995fab37eSRobert Watson 325095fab37eSRobert Watson setsugid(p); 325195fab37eSRobert Watson crcopy(newcred, oldcred); 325295fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 325395fab37eSRobert Watson p->p_ucred = newcred; 3254e5cb5e37SRobert Watson 3255e5cb5e37SRobert Watson /* 3256e5cb5e37SRobert Watson * Grab additional reference for use while revoking mmaps, prior 3257e5cb5e37SRobert Watson * to releasing the proc lock and sharing the cred. 3258e5cb5e37SRobert Watson */ 3259e5cb5e37SRobert Watson crhold(newcred); 326095fab37eSRobert Watson PROC_UNLOCK(p); 3261e5cb5e37SRobert Watson 326216140035SRobert Watson mtx_lock(&Giant); 3263e5cb5e37SRobert Watson mac_cred_mmapped_drop_perms(td, newcred); 326416140035SRobert Watson mtx_unlock(&Giant); 3265e5cb5e37SRobert Watson 3266e5cb5e37SRobert Watson crfree(newcred); /* Free revocation reference. */ 326795fab37eSRobert Watson crfree(oldcred); 326895fab37eSRobert Watson mac_destroy_temp(&intlabel); 326995fab37eSRobert Watson return (0); 327095fab37eSRobert Watson } 327195fab37eSRobert Watson 327295fab37eSRobert Watson /* 327395fab37eSRobert Watson * MPSAFE 327495fab37eSRobert Watson */ 327595fab37eSRobert Watson int 327695fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 327795fab37eSRobert Watson { 327895fab37eSRobert Watson struct file *fp; 327995fab37eSRobert Watson struct mac extmac; 328095fab37eSRobert Watson struct vnode *vp; 328195fab37eSRobert Watson struct pipe *pipe; 328295fab37eSRobert Watson int error; 328395fab37eSRobert Watson 328495fab37eSRobert Watson mtx_lock(&Giant); 328595fab37eSRobert Watson 328695fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 328795fab37eSRobert Watson if (error) 328895fab37eSRobert Watson goto out; 328995fab37eSRobert Watson 329095fab37eSRobert Watson switch (fp->f_type) { 329195fab37eSRobert Watson case DTYPE_FIFO: 329295fab37eSRobert Watson case DTYPE_VNODE: 329395fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 329495fab37eSRobert Watson 329595fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 329695fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 329795fab37eSRobert Watson if (error == 0) 329895fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 329995fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 330095fab37eSRobert Watson break; 330195fab37eSRobert Watson case DTYPE_PIPE: 330295fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 330395fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 330495fab37eSRobert Watson break; 330595fab37eSRobert Watson default: 330695fab37eSRobert Watson error = EINVAL; 330795fab37eSRobert Watson } 330895fab37eSRobert Watson 330995fab37eSRobert Watson if (error == 0) 331095fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 331195fab37eSRobert Watson 331295fab37eSRobert Watson fdrop(fp, td); 331395fab37eSRobert Watson 331495fab37eSRobert Watson out: 331595fab37eSRobert Watson mtx_unlock(&Giant); 331695fab37eSRobert Watson return (error); 331795fab37eSRobert Watson } 331895fab37eSRobert Watson 331995fab37eSRobert Watson /* 332095fab37eSRobert Watson * MPSAFE 332195fab37eSRobert Watson */ 332295fab37eSRobert Watson int 332395fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 332495fab37eSRobert Watson { 332595fab37eSRobert Watson struct nameidata nd; 332695fab37eSRobert Watson struct mac extmac; 332795fab37eSRobert Watson int error; 332895fab37eSRobert Watson 332995fab37eSRobert Watson mtx_lock(&Giant); 333095fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 333195fab37eSRobert Watson SCARG(uap, path_p), td); 333295fab37eSRobert Watson error = namei(&nd); 333395fab37eSRobert Watson if (error) 333495fab37eSRobert Watson goto out; 333595fab37eSRobert Watson 333695fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 333795fab37eSRobert Watson if (error == 0) 333895fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 333995fab37eSRobert Watson NDFREE(&nd, 0); 334095fab37eSRobert Watson if (error) 334195fab37eSRobert Watson goto out; 334295fab37eSRobert Watson 334395fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 334495fab37eSRobert Watson 334595fab37eSRobert Watson out: 334695fab37eSRobert Watson mtx_unlock(&Giant); 334795fab37eSRobert Watson return (error); 334895fab37eSRobert Watson } 334995fab37eSRobert Watson 335095fab37eSRobert Watson /* 335195fab37eSRobert Watson * MPSAFE 335295fab37eSRobert Watson */ 335395fab37eSRobert Watson int 335495fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 335595fab37eSRobert Watson { 335695fab37eSRobert Watson struct file *fp; 335795fab37eSRobert Watson struct mac extmac; 335895fab37eSRobert Watson struct label intlabel; 335995fab37eSRobert Watson struct mount *mp; 336095fab37eSRobert Watson struct vnode *vp; 336195fab37eSRobert Watson struct pipe *pipe; 336295fab37eSRobert Watson int error; 336395fab37eSRobert Watson 336495fab37eSRobert Watson mtx_lock(&Giant); 336595fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 336695fab37eSRobert Watson if (error) 336795fab37eSRobert Watson goto out1; 336895fab37eSRobert Watson 336995fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 337095fab37eSRobert Watson if (error) 337195fab37eSRobert Watson goto out2; 337295fab37eSRobert Watson 337395fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 337495fab37eSRobert Watson if (error) 337595fab37eSRobert Watson goto out2; 337695fab37eSRobert Watson 337795fab37eSRobert Watson switch (fp->f_type) { 337895fab37eSRobert Watson case DTYPE_FIFO: 337995fab37eSRobert Watson case DTYPE_VNODE: 338095fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 338195fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 338295fab37eSRobert Watson if (error != 0) 338395fab37eSRobert Watson break; 338495fab37eSRobert Watson 338595fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 338695fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 338795fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 338895fab37eSRobert Watson vn_finished_write(mp); 338995fab37eSRobert Watson mac_destroy_temp(&intlabel); 339095fab37eSRobert Watson break; 339195fab37eSRobert Watson case DTYPE_PIPE: 339295fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 33931aa37f53SRobert Watson PIPE_LOCK(pipe); 339495fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 33951aa37f53SRobert Watson PIPE_UNLOCK(pipe); 339695fab37eSRobert Watson break; 339795fab37eSRobert Watson default: 339895fab37eSRobert Watson error = EINVAL; 339995fab37eSRobert Watson } 340095fab37eSRobert Watson 340195fab37eSRobert Watson out2: 340295fab37eSRobert Watson fdrop(fp, td); 340395fab37eSRobert Watson out1: 340495fab37eSRobert Watson mtx_unlock(&Giant); 340595fab37eSRobert Watson return (error); 340695fab37eSRobert Watson } 340795fab37eSRobert Watson 340895fab37eSRobert Watson /* 340995fab37eSRobert Watson * MPSAFE 341095fab37eSRobert Watson */ 341195fab37eSRobert Watson int 341295fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 341395fab37eSRobert Watson { 341495fab37eSRobert Watson struct nameidata nd; 341595fab37eSRobert Watson struct mac extmac; 341695fab37eSRobert Watson struct label intlabel; 341795fab37eSRobert Watson struct mount *mp; 341895fab37eSRobert Watson int error; 341995fab37eSRobert Watson 342095fab37eSRobert Watson mtx_lock(&Giant); 342195fab37eSRobert Watson 342295fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 342395fab37eSRobert Watson if (error) 342495fab37eSRobert Watson goto out; 342595fab37eSRobert Watson 342695fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 342795fab37eSRobert Watson if (error) 342895fab37eSRobert Watson goto out; 342995fab37eSRobert Watson 343095fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 343195fab37eSRobert Watson SCARG(uap, path_p), td); 343295fab37eSRobert Watson error = namei(&nd); 343395fab37eSRobert Watson if (error) 343495fab37eSRobert Watson goto out2; 343595fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 343695fab37eSRobert Watson if (error) 343795fab37eSRobert Watson goto out2; 343895fab37eSRobert Watson 343995fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 344095fab37eSRobert Watson 344195fab37eSRobert Watson vn_finished_write(mp); 344295fab37eSRobert Watson out2: 344395fab37eSRobert Watson mac_destroy_temp(&intlabel); 344495fab37eSRobert Watson NDFREE(&nd, 0); 344595fab37eSRobert Watson out: 344695fab37eSRobert Watson mtx_unlock(&Giant); 344795fab37eSRobert Watson return (error); 344895fab37eSRobert Watson } 344995fab37eSRobert Watson 345027f2eac7SRobert Watson int 345127f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 345227f2eac7SRobert Watson { 345327f2eac7SRobert Watson struct mac_policy_conf *mpc; 345427f2eac7SRobert Watson char target[MAC_MAX_POLICY_NAME]; 345527f2eac7SRobert Watson int error; 345627f2eac7SRobert Watson 345727f2eac7SRobert Watson error = copyinstr(SCARG(uap, policy), target, sizeof(target), NULL); 345827f2eac7SRobert Watson if (error) 345927f2eac7SRobert Watson return (error); 346027f2eac7SRobert Watson 346127f2eac7SRobert Watson error = ENOSYS; 346227f2eac7SRobert Watson MAC_POLICY_LIST_BUSY(); 346327f2eac7SRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { 346427f2eac7SRobert Watson if (strcmp(mpc->mpc_name, target) == 0 && 346527f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall != NULL) { 346627f2eac7SRobert Watson error = mpc->mpc_ops->mpo_syscall(td, 346727f2eac7SRobert Watson SCARG(uap, call), SCARG(uap, arg)); 346827f2eac7SRobert Watson goto out; 346927f2eac7SRobert Watson } 347027f2eac7SRobert Watson } 347127f2eac7SRobert Watson 347227f2eac7SRobert Watson out: 347327f2eac7SRobert Watson MAC_POLICY_LIST_UNBUSY(); 347427f2eac7SRobert Watson return (error); 347527f2eac7SRobert Watson } 347627f2eac7SRobert Watson 347795fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 347895fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 347995fab37eSRobert Watson 348095fab37eSRobert Watson #else /* !MAC */ 34817bc82500SRobert Watson 34827bc82500SRobert Watson int 34837bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 34847bc82500SRobert Watson { 34857bc82500SRobert Watson 34867bc82500SRobert Watson return (ENOSYS); 34877bc82500SRobert Watson } 34887bc82500SRobert Watson 34897bc82500SRobert Watson int 34907bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 34917bc82500SRobert Watson { 34927bc82500SRobert Watson 34937bc82500SRobert Watson return (ENOSYS); 34947bc82500SRobert Watson } 34957bc82500SRobert Watson 34967bc82500SRobert Watson int 34977bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 34987bc82500SRobert Watson { 34997bc82500SRobert Watson 35007bc82500SRobert Watson return (ENOSYS); 35017bc82500SRobert Watson } 35027bc82500SRobert Watson 35037bc82500SRobert Watson int 35047bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 35057bc82500SRobert Watson { 35067bc82500SRobert Watson 35077bc82500SRobert Watson return (ENOSYS); 35087bc82500SRobert Watson } 35097bc82500SRobert Watson 35107bc82500SRobert Watson int 35117bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 35127bc82500SRobert Watson { 35137bc82500SRobert Watson 35147bc82500SRobert Watson return (ENOSYS); 35157bc82500SRobert Watson } 35167bc82500SRobert Watson 35177bc82500SRobert Watson int 35187bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 35197bc82500SRobert Watson { 35207bc82500SRobert Watson 35217bc82500SRobert Watson return (ENOSYS); 35227bc82500SRobert Watson } 352395fab37eSRobert Watson 352427f2eac7SRobert Watson int 352527f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 352627f2eac7SRobert Watson { 352727f2eac7SRobert Watson 352827f2eac7SRobert Watson return (ENOSYS); 352927f2eac7SRobert Watson } 353027f2eac7SRobert Watson 353195fab37eSRobert Watson #endif /* !MAC */ 3532