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 22495fab37eSRobert Watson MALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 22595fab37eSRobert Watson MALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 22695fab37eSRobert Watson 22795fab37eSRobert Watson /* 22895fab37eSRobert Watson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 22995fab37eSRobert Watson * the linked list of attached policy modules. Read-only consumers of 23095fab37eSRobert Watson * the list must acquire a shared lock for the duration of their use; 23195fab37eSRobert Watson * writers must acquire an exclusive lock. Note that for compound 23295fab37eSRobert Watson * operations, locks should be held for the entire compound operation, 23395fab37eSRobert Watson * and that this is not yet done for relabel requests. 23495fab37eSRobert Watson */ 23595fab37eSRobert Watson static struct mtx mac_policy_list_lock; 23695fab37eSRobert Watson static LIST_HEAD(, mac_policy_conf) mac_policy_list; 23795fab37eSRobert Watson static int mac_policy_list_busy; 23895fab37eSRobert Watson #define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 23995fab37eSRobert Watson "mac_policy_list_lock", NULL, MTX_DEF); 24095fab37eSRobert Watson #define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 24195fab37eSRobert Watson #define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 24295fab37eSRobert Watson 24395fab37eSRobert Watson #define MAC_POLICY_LIST_BUSY() do { \ 24495fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 24595fab37eSRobert Watson mac_policy_list_busy++; \ 24695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 24795fab37eSRobert Watson } while (0) 24895fab37eSRobert Watson 24995fab37eSRobert Watson #define MAC_POLICY_LIST_UNBUSY() do { \ 25095fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 25195fab37eSRobert Watson mac_policy_list_busy--; \ 25295fab37eSRobert Watson if (mac_policy_list_busy < 0) \ 25395fab37eSRobert Watson panic("Extra mac_policy_list_busy--"); \ 25495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 25595fab37eSRobert Watson } while (0) 25695fab37eSRobert Watson 25795fab37eSRobert Watson /* 25895fab37eSRobert Watson * MAC_CHECK performs the designated check by walking the policy 25995fab37eSRobert Watson * module list and checking with each as to how it feels about the 26095fab37eSRobert Watson * request. Note that it returns its value via 'error' in the scope 26195fab37eSRobert Watson * of the caller. 26295fab37eSRobert Watson */ 26395fab37eSRobert Watson #define MAC_CHECK(check, args...) do { \ 26495fab37eSRobert Watson struct mac_policy_conf *mpc; \ 26595fab37eSRobert Watson \ 26695fab37eSRobert Watson error = 0; \ 26795fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 26895fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 26995fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 27095fab37eSRobert Watson error = error_select( \ 27195fab37eSRobert Watson mpc->mpc_ops->mpo_ ## check (args), \ 27295fab37eSRobert Watson error); \ 27395fab37eSRobert Watson } \ 27495fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 27595fab37eSRobert Watson } while (0) 27695fab37eSRobert Watson 27795fab37eSRobert Watson /* 27895fab37eSRobert Watson * MAC_BOOLEAN performs the designated boolean composition by walking 27995fab37eSRobert Watson * the module list, invoking each instance of the operation, and 28095fab37eSRobert Watson * combining the results using the passed C operator. Note that it 28195fab37eSRobert Watson * returns its value via 'result' in the scope of the caller, which 28295fab37eSRobert Watson * should be initialized by the caller in a meaningful way to get 28395fab37eSRobert Watson * a meaningful result. 28495fab37eSRobert Watson */ 28595fab37eSRobert Watson #define MAC_BOOLEAN(operation, composition, args...) do { \ 28695fab37eSRobert Watson struct mac_policy_conf *mpc; \ 28795fab37eSRobert Watson \ 28895fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 28995fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 29095fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 29195fab37eSRobert Watson result = result composition \ 29295fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 29395fab37eSRobert Watson } \ 29495fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 29595fab37eSRobert Watson } while (0) 29695fab37eSRobert Watson 29795fab37eSRobert Watson /* 29895fab37eSRobert Watson * MAC_PERFORM performs the designated operation by walking the policy 29995fab37eSRobert Watson * module list and invoking that operation for each policy. 30095fab37eSRobert Watson */ 30195fab37eSRobert Watson #define MAC_PERFORM(operation, args...) do { \ 30295fab37eSRobert Watson struct mac_policy_conf *mpc; \ 30395fab37eSRobert Watson \ 30495fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 30595fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 30695fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 30795fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 30895fab37eSRobert Watson } \ 30995fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 31095fab37eSRobert Watson } while (0) 31195fab37eSRobert Watson 31295fab37eSRobert Watson /* 31395fab37eSRobert Watson * Initialize the MAC subsystem, including appropriate SMP locks. 31495fab37eSRobert Watson */ 31595fab37eSRobert Watson static void 31695fab37eSRobert Watson mac_init(void) 31795fab37eSRobert Watson { 31895fab37eSRobert Watson 31995fab37eSRobert Watson LIST_INIT(&mac_policy_list); 32095fab37eSRobert Watson MAC_POLICY_LIST_LOCKINIT(); 32195fab37eSRobert Watson } 32295fab37eSRobert Watson 32395fab37eSRobert Watson /* 32495fab37eSRobert Watson * For the purposes of modules that want to know if they were loaded 32595fab37eSRobert Watson * "early", set the mac_late flag once we've processed modules either 32695fab37eSRobert Watson * linked into the kernel, or loaded before the kernel startup. 32795fab37eSRobert Watson */ 32895fab37eSRobert Watson static void 32995fab37eSRobert Watson mac_late_init(void) 33095fab37eSRobert Watson { 33195fab37eSRobert Watson 33295fab37eSRobert Watson mac_late = 1; 33395fab37eSRobert Watson } 33495fab37eSRobert Watson 33595fab37eSRobert Watson /* 33695fab37eSRobert Watson * Allow MAC policy modules to register during boot, etc. 33795fab37eSRobert Watson */ 33895fab37eSRobert Watson int 33995fab37eSRobert Watson mac_policy_modevent(module_t mod, int type, void *data) 34095fab37eSRobert Watson { 34195fab37eSRobert Watson struct mac_policy_conf *mpc; 34295fab37eSRobert Watson int error; 34395fab37eSRobert Watson 34495fab37eSRobert Watson error = 0; 34595fab37eSRobert Watson mpc = (struct mac_policy_conf *) data; 34695fab37eSRobert Watson 34795fab37eSRobert Watson switch (type) { 34895fab37eSRobert Watson case MOD_LOAD: 34995fab37eSRobert Watson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 35095fab37eSRobert Watson mac_late) { 35195fab37eSRobert Watson printf("mac_policy_modevent: can't load %s policy " 35295fab37eSRobert Watson "after booting\n", mpc->mpc_name); 35395fab37eSRobert Watson error = EBUSY; 35495fab37eSRobert Watson break; 35595fab37eSRobert Watson } 35695fab37eSRobert Watson error = mac_policy_register(mpc); 35795fab37eSRobert Watson break; 35895fab37eSRobert Watson case MOD_UNLOAD: 35995fab37eSRobert Watson /* Don't unregister the module if it was never registered. */ 36095fab37eSRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 36195fab37eSRobert Watson != 0) 36295fab37eSRobert Watson error = mac_policy_unregister(mpc); 36395fab37eSRobert Watson else 36495fab37eSRobert Watson error = 0; 36595fab37eSRobert Watson break; 36695fab37eSRobert Watson default: 36795fab37eSRobert Watson break; 36895fab37eSRobert Watson } 36995fab37eSRobert Watson 37095fab37eSRobert Watson return (error); 37195fab37eSRobert Watson } 37295fab37eSRobert Watson 37395fab37eSRobert Watson static int 37495fab37eSRobert Watson mac_policy_register(struct mac_policy_conf *mpc) 37595fab37eSRobert Watson { 37695fab37eSRobert Watson struct mac_policy_conf *tmpc; 37795fab37eSRobert Watson struct mac_policy_op_entry *mpe; 37895fab37eSRobert Watson int slot; 37995fab37eSRobert Watson 380cc51a2b5SRobert Watson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*mpc->mpc_ops), 381cc51a2b5SRobert Watson M_MACOPVEC, M_WAITOK | M_ZERO); 38295fab37eSRobert Watson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 38395fab37eSRobert Watson switch (mpe->mpe_constant) { 38495fab37eSRobert Watson case MAC_OP_LAST: 38595fab37eSRobert Watson /* 38695fab37eSRobert Watson * Doesn't actually happen, but this allows checking 38795fab37eSRobert Watson * that all enumerated values are handled. 38895fab37eSRobert Watson */ 38995fab37eSRobert Watson break; 39095fab37eSRobert Watson case MAC_DESTROY: 39195fab37eSRobert Watson mpc->mpc_ops->mpo_destroy = 39295fab37eSRobert Watson mpe->mpe_function; 39395fab37eSRobert Watson break; 39495fab37eSRobert Watson case MAC_INIT: 39595fab37eSRobert Watson mpc->mpc_ops->mpo_init = 39695fab37eSRobert Watson mpe->mpe_function; 39795fab37eSRobert Watson break; 39827f2eac7SRobert Watson case MAC_SYSCALL: 39927f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall = 40027f2eac7SRobert Watson mpe->mpe_function; 40127f2eac7SRobert Watson break; 40296adb909SRobert Watson case MAC_INIT_BPFDESC_LABEL: 40396adb909SRobert Watson mpc->mpc_ops->mpo_init_bpfdesc_label = 40495fab37eSRobert Watson mpe->mpe_function; 40595fab37eSRobert Watson break; 40696adb909SRobert Watson case MAC_INIT_CRED_LABEL: 40796adb909SRobert Watson mpc->mpc_ops->mpo_init_cred_label = 40895fab37eSRobert Watson mpe->mpe_function; 40995fab37eSRobert Watson break; 41096adb909SRobert Watson case MAC_INIT_DEVFSDIRENT_LABEL: 41196adb909SRobert Watson mpc->mpc_ops->mpo_init_devfsdirent_label = 41295fab37eSRobert Watson mpe->mpe_function; 41395fab37eSRobert Watson break; 41496adb909SRobert Watson case MAC_INIT_IFNET_LABEL: 41596adb909SRobert Watson mpc->mpc_ops->mpo_init_ifnet_label = 41695fab37eSRobert Watson mpe->mpe_function; 41795fab37eSRobert Watson break; 41896adb909SRobert Watson case MAC_INIT_IPQ_LABEL: 41996adb909SRobert Watson mpc->mpc_ops->mpo_init_ipq_label = 42095fab37eSRobert Watson mpe->mpe_function; 42195fab37eSRobert Watson break; 42296adb909SRobert Watson case MAC_INIT_MBUF_LABEL: 42396adb909SRobert Watson mpc->mpc_ops->mpo_init_mbuf_label = 42495fab37eSRobert Watson mpe->mpe_function; 42595fab37eSRobert Watson break; 42696adb909SRobert Watson case MAC_INIT_MOUNT_LABEL: 42796adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_label = 42895fab37eSRobert Watson mpe->mpe_function; 42995fab37eSRobert Watson break; 43096adb909SRobert Watson case MAC_INIT_MOUNT_FS_LABEL: 43196adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_fs_label = 43295fab37eSRobert Watson mpe->mpe_function; 43395fab37eSRobert Watson break; 43496adb909SRobert Watson case MAC_INIT_PIPE_LABEL: 43596adb909SRobert Watson mpc->mpc_ops->mpo_init_pipe_label = 43695fab37eSRobert Watson mpe->mpe_function; 43795fab37eSRobert Watson break; 43896adb909SRobert Watson case MAC_INIT_SOCKET_LABEL: 43996adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_label = 44095fab37eSRobert Watson mpe->mpe_function; 44195fab37eSRobert Watson break; 44296adb909SRobert Watson case MAC_INIT_SOCKET_PEER_LABEL: 44396adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_peer_label = 44495fab37eSRobert Watson mpe->mpe_function; 44595fab37eSRobert Watson break; 44696adb909SRobert Watson case MAC_INIT_TEMP_LABEL: 44796adb909SRobert Watson mpc->mpc_ops->mpo_init_temp_label = 44895fab37eSRobert Watson mpe->mpe_function; 44995fab37eSRobert Watson break; 45096adb909SRobert Watson case MAC_INIT_VNODE_LABEL: 45196adb909SRobert Watson mpc->mpc_ops->mpo_init_vnode_label = 45295fab37eSRobert Watson mpe->mpe_function; 45395fab37eSRobert Watson break; 45496adb909SRobert Watson case MAC_DESTROY_BPFDESC_LABEL: 45596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_bpfdesc_label = 45695fab37eSRobert Watson mpe->mpe_function; 45795fab37eSRobert Watson break; 45896adb909SRobert Watson case MAC_DESTROY_CRED_LABEL: 45996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_cred_label = 46095fab37eSRobert Watson mpe->mpe_function; 46195fab37eSRobert Watson break; 46296adb909SRobert Watson case MAC_DESTROY_DEVFSDIRENT_LABEL: 46396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_devfsdirent_label = 46495fab37eSRobert Watson mpe->mpe_function; 46595fab37eSRobert Watson break; 46696adb909SRobert Watson case MAC_DESTROY_IFNET_LABEL: 46796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ifnet_label = 46895fab37eSRobert Watson mpe->mpe_function; 46995fab37eSRobert Watson break; 47096adb909SRobert Watson case MAC_DESTROY_IPQ_LABEL: 47196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ipq_label = 47295fab37eSRobert Watson mpe->mpe_function; 47395fab37eSRobert Watson break; 47496adb909SRobert Watson case MAC_DESTROY_MBUF_LABEL: 47596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mbuf_label = 47695fab37eSRobert Watson mpe->mpe_function; 47795fab37eSRobert Watson break; 47896adb909SRobert Watson case MAC_DESTROY_MOUNT_LABEL: 47996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_label = 48095fab37eSRobert Watson mpe->mpe_function; 48195fab37eSRobert Watson break; 48296adb909SRobert Watson case MAC_DESTROY_MOUNT_FS_LABEL: 48396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_fs_label = 48495fab37eSRobert Watson mpe->mpe_function; 48595fab37eSRobert Watson break; 48696adb909SRobert Watson case MAC_DESTROY_PIPE_LABEL: 48796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_pipe_label = 48896adb909SRobert Watson mpe->mpe_function; 48996adb909SRobert Watson break; 49096adb909SRobert Watson case MAC_DESTROY_SOCKET_LABEL: 49196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_label = 49296adb909SRobert Watson mpe->mpe_function; 49396adb909SRobert Watson break; 49496adb909SRobert Watson case MAC_DESTROY_SOCKET_PEER_LABEL: 49596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_peer_label = 49696adb909SRobert Watson mpe->mpe_function; 49796adb909SRobert Watson break; 49896adb909SRobert Watson case MAC_DESTROY_TEMP_LABEL: 49996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_temp_label = 50096adb909SRobert Watson mpe->mpe_function; 50196adb909SRobert Watson break; 50296adb909SRobert Watson case MAC_DESTROY_VNODE_LABEL: 50396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_vnode_label = 50495fab37eSRobert Watson mpe->mpe_function; 50595fab37eSRobert Watson break; 50695fab37eSRobert Watson case MAC_EXTERNALIZE: 50795fab37eSRobert Watson mpc->mpc_ops->mpo_externalize = 50895fab37eSRobert Watson mpe->mpe_function; 50995fab37eSRobert Watson break; 51095fab37eSRobert Watson case MAC_INTERNALIZE: 51195fab37eSRobert Watson mpc->mpc_ops->mpo_internalize = 51295fab37eSRobert Watson mpe->mpe_function; 51395fab37eSRobert Watson break; 51495fab37eSRobert Watson case MAC_CREATE_DEVFS_DEVICE: 51595fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_device = 51695fab37eSRobert Watson mpe->mpe_function; 51795fab37eSRobert Watson break; 51895fab37eSRobert Watson case MAC_CREATE_DEVFS_DIRECTORY: 51995fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_directory = 52095fab37eSRobert Watson mpe->mpe_function; 52195fab37eSRobert Watson break; 52295fab37eSRobert Watson case MAC_CREATE_DEVFS_VNODE: 52395fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_vnode = 52495fab37eSRobert Watson mpe->mpe_function; 52595fab37eSRobert Watson break; 52695fab37eSRobert Watson case MAC_STDCREATEVNODE_EA: 52795fab37eSRobert Watson mpc->mpc_ops->mpo_stdcreatevnode_ea = 52895fab37eSRobert Watson mpe->mpe_function; 52995fab37eSRobert Watson break; 53095fab37eSRobert Watson case MAC_CREATE_VNODE: 53195fab37eSRobert Watson mpc->mpc_ops->mpo_create_vnode = 53295fab37eSRobert Watson mpe->mpe_function; 53395fab37eSRobert Watson break; 53495fab37eSRobert Watson case MAC_CREATE_MOUNT: 53595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mount = 53695fab37eSRobert Watson mpe->mpe_function; 53795fab37eSRobert Watson break; 53895fab37eSRobert Watson case MAC_CREATE_ROOT_MOUNT: 53995fab37eSRobert Watson mpc->mpc_ops->mpo_create_root_mount = 54095fab37eSRobert Watson mpe->mpe_function; 54195fab37eSRobert Watson break; 54295fab37eSRobert Watson case MAC_RELABEL_VNODE: 54395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_vnode = 54495fab37eSRobert Watson mpe->mpe_function; 54595fab37eSRobert Watson break; 54695fab37eSRobert Watson case MAC_UPDATE_DEVFSDIRENT: 54795fab37eSRobert Watson mpc->mpc_ops->mpo_update_devfsdirent = 54895fab37eSRobert Watson mpe->mpe_function; 54995fab37eSRobert Watson break; 55095fab37eSRobert Watson case MAC_UPDATE_PROCFSVNODE: 55195fab37eSRobert Watson mpc->mpc_ops->mpo_update_procfsvnode = 55295fab37eSRobert Watson mpe->mpe_function; 55395fab37eSRobert Watson break; 55495fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTATTR: 55595fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_extattr = 55695fab37eSRobert Watson mpe->mpe_function; 55795fab37eSRobert Watson break; 55895fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 55995fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_externalized = 56095fab37eSRobert Watson mpe->mpe_function; 56195fab37eSRobert Watson break; 56295fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_MOUNT: 56395fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_mount = 56495fab37eSRobert Watson mpe->mpe_function; 56595fab37eSRobert Watson break; 56695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_SOCKET: 56795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_socket = 56895fab37eSRobert Watson mpe->mpe_function; 56995fab37eSRobert Watson break; 57095fab37eSRobert Watson case MAC_CREATE_PIPE: 57195fab37eSRobert Watson mpc->mpc_ops->mpo_create_pipe = 57295fab37eSRobert Watson mpe->mpe_function; 57395fab37eSRobert Watson break; 57495fab37eSRobert Watson case MAC_CREATE_SOCKET: 57595fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket = 57695fab37eSRobert Watson mpe->mpe_function; 57795fab37eSRobert Watson break; 57895fab37eSRobert Watson case MAC_CREATE_SOCKET_FROM_SOCKET: 57995fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket_from_socket = 58095fab37eSRobert Watson mpe->mpe_function; 58195fab37eSRobert Watson break; 58295fab37eSRobert Watson case MAC_RELABEL_PIPE: 58395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_pipe = 58495fab37eSRobert Watson mpe->mpe_function; 58595fab37eSRobert Watson break; 58695fab37eSRobert Watson case MAC_RELABEL_SOCKET: 58795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_socket = 58895fab37eSRobert Watson mpe->mpe_function; 58995fab37eSRobert Watson break; 59095fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_MBUF: 59195fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 59295fab37eSRobert Watson mpe->mpe_function; 59395fab37eSRobert Watson break; 59495fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 59595fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 59695fab37eSRobert Watson mpe->mpe_function; 59795fab37eSRobert Watson break; 59895fab37eSRobert Watson case MAC_CREATE_BPFDESC: 59995fab37eSRobert Watson mpc->mpc_ops->mpo_create_bpfdesc = 60095fab37eSRobert Watson mpe->mpe_function; 60195fab37eSRobert Watson break; 60295fab37eSRobert Watson case MAC_CREATE_DATAGRAM_FROM_IPQ: 60395fab37eSRobert Watson mpc->mpc_ops->mpo_create_datagram_from_ipq = 60495fab37eSRobert Watson mpe->mpe_function; 60595fab37eSRobert Watson break; 60695fab37eSRobert Watson case MAC_CREATE_FRAGMENT: 60795fab37eSRobert Watson mpc->mpc_ops->mpo_create_fragment = 60895fab37eSRobert Watson mpe->mpe_function; 60995fab37eSRobert Watson break; 61095fab37eSRobert Watson case MAC_CREATE_IFNET: 61195fab37eSRobert Watson mpc->mpc_ops->mpo_create_ifnet = 61295fab37eSRobert Watson mpe->mpe_function; 61395fab37eSRobert Watson break; 61495fab37eSRobert Watson case MAC_CREATE_IPQ: 61595fab37eSRobert Watson mpc->mpc_ops->mpo_create_ipq = 61695fab37eSRobert Watson mpe->mpe_function; 61795fab37eSRobert Watson break; 61895fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_MBUF: 61995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 62095fab37eSRobert Watson mpe->mpe_function; 62195fab37eSRobert Watson break; 62295fab37eSRobert Watson case MAC_CREATE_MBUF_LINKLAYER: 62395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_linklayer = 62495fab37eSRobert Watson mpe->mpe_function; 62595fab37eSRobert Watson break; 62695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_BPFDESC: 62795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 62895fab37eSRobert Watson mpe->mpe_function; 62995fab37eSRobert Watson break; 63095fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_IFNET: 63195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 63295fab37eSRobert Watson mpe->mpe_function; 63395fab37eSRobert Watson break; 63495fab37eSRobert Watson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 63595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 63695fab37eSRobert Watson mpe->mpe_function; 63795fab37eSRobert Watson break; 63895fab37eSRobert Watson case MAC_CREATE_MBUF_NETLAYER: 63995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_netlayer = 64095fab37eSRobert Watson mpe->mpe_function; 64195fab37eSRobert Watson break; 64295fab37eSRobert Watson case MAC_FRAGMENT_MATCH: 64395fab37eSRobert Watson mpc->mpc_ops->mpo_fragment_match = 64495fab37eSRobert Watson mpe->mpe_function; 64595fab37eSRobert Watson break; 64695fab37eSRobert Watson case MAC_RELABEL_IFNET: 64795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_ifnet = 64895fab37eSRobert Watson mpe->mpe_function; 64995fab37eSRobert Watson break; 65095fab37eSRobert Watson case MAC_UPDATE_IPQ: 65195fab37eSRobert Watson mpc->mpc_ops->mpo_update_ipq = 65295fab37eSRobert Watson mpe->mpe_function; 65395fab37eSRobert Watson break; 65495fab37eSRobert Watson case MAC_CREATE_CRED: 65595fab37eSRobert Watson mpc->mpc_ops->mpo_create_cred = 65695fab37eSRobert Watson mpe->mpe_function; 65795fab37eSRobert Watson break; 65895fab37eSRobert Watson case MAC_EXECVE_TRANSITION: 65995fab37eSRobert Watson mpc->mpc_ops->mpo_execve_transition = 66095fab37eSRobert Watson mpe->mpe_function; 66195fab37eSRobert Watson break; 66295fab37eSRobert Watson case MAC_EXECVE_WILL_TRANSITION: 66395fab37eSRobert Watson mpc->mpc_ops->mpo_execve_will_transition = 66495fab37eSRobert Watson mpe->mpe_function; 66595fab37eSRobert Watson break; 66695fab37eSRobert Watson case MAC_CREATE_PROC0: 667226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc0 = 668226b96fbSRobert Watson mpe->mpe_function; 66995fab37eSRobert Watson break; 67095fab37eSRobert Watson case MAC_CREATE_PROC1: 671226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc1 = 672226b96fbSRobert Watson mpe->mpe_function; 67395fab37eSRobert Watson break; 67495fab37eSRobert Watson case MAC_RELABEL_CRED: 67595fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_cred = 67695fab37eSRobert Watson mpe->mpe_function; 67795fab37eSRobert Watson break; 67892dbb82aSRobert Watson case MAC_THREAD_USERRET: 67992dbb82aSRobert Watson mpc->mpc_ops->mpo_thread_userret = 68092dbb82aSRobert Watson mpe->mpe_function; 68192dbb82aSRobert Watson break; 68295fab37eSRobert Watson case MAC_CHECK_BPFDESC_RECEIVE: 68395fab37eSRobert Watson mpc->mpc_ops->mpo_check_bpfdesc_receive = 68495fab37eSRobert Watson mpe->mpe_function; 68595fab37eSRobert Watson break; 68695fab37eSRobert Watson case MAC_CHECK_CRED_RELABEL: 68795fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_relabel = 68895fab37eSRobert Watson mpe->mpe_function; 68995fab37eSRobert Watson break; 69095fab37eSRobert Watson case MAC_CHECK_CRED_VISIBLE: 69195fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_visible = 69295fab37eSRobert Watson mpe->mpe_function; 69395fab37eSRobert Watson break; 69495fab37eSRobert Watson case MAC_CHECK_IFNET_RELABEL: 69595fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_relabel = 69695fab37eSRobert Watson mpe->mpe_function; 69795fab37eSRobert Watson break; 69895fab37eSRobert Watson case MAC_CHECK_IFNET_TRANSMIT: 69995fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_transmit = 70095fab37eSRobert Watson mpe->mpe_function; 70195fab37eSRobert Watson break; 70295fab37eSRobert Watson case MAC_CHECK_MOUNT_STAT: 70395fab37eSRobert Watson mpc->mpc_ops->mpo_check_mount_stat = 70495fab37eSRobert Watson mpe->mpe_function; 70595fab37eSRobert Watson break; 70695fab37eSRobert Watson case MAC_CHECK_PIPE_IOCTL: 70795fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_ioctl = 70895fab37eSRobert Watson mpe->mpe_function; 70995fab37eSRobert Watson break; 710c024c3eeSRobert Watson case MAC_CHECK_PIPE_POLL: 711c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_poll = 712c024c3eeSRobert Watson mpe->mpe_function; 713c024c3eeSRobert Watson break; 714c024c3eeSRobert Watson case MAC_CHECK_PIPE_READ: 715c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_read = 71695fab37eSRobert Watson mpe->mpe_function; 71795fab37eSRobert Watson break; 71895fab37eSRobert Watson case MAC_CHECK_PIPE_RELABEL: 71995fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_relabel = 72095fab37eSRobert Watson mpe->mpe_function; 72195fab37eSRobert Watson break; 722c024c3eeSRobert Watson case MAC_CHECK_PIPE_STAT: 723c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_stat = 724c024c3eeSRobert Watson mpe->mpe_function; 725c024c3eeSRobert Watson break; 726c024c3eeSRobert Watson case MAC_CHECK_PIPE_WRITE: 727c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_write = 728c024c3eeSRobert Watson mpe->mpe_function; 729c024c3eeSRobert Watson break; 73095fab37eSRobert Watson case MAC_CHECK_PROC_DEBUG: 73195fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_debug = 73295fab37eSRobert Watson mpe->mpe_function; 73395fab37eSRobert Watson break; 73495fab37eSRobert Watson case MAC_CHECK_PROC_SCHED: 73595fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_sched = 73695fab37eSRobert Watson mpe->mpe_function; 73795fab37eSRobert Watson break; 73895fab37eSRobert Watson case MAC_CHECK_PROC_SIGNAL: 73995fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_signal = 74095fab37eSRobert Watson mpe->mpe_function; 74195fab37eSRobert Watson break; 74295fab37eSRobert Watson case MAC_CHECK_SOCKET_BIND: 74395fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_bind = 74495fab37eSRobert Watson mpe->mpe_function; 74595fab37eSRobert Watson break; 74695fab37eSRobert Watson case MAC_CHECK_SOCKET_CONNECT: 74795fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_connect = 74895fab37eSRobert Watson mpe->mpe_function; 74995fab37eSRobert Watson break; 750d61198e4SRobert Watson case MAC_CHECK_SOCKET_DELIVER: 751d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_deliver = 75295fab37eSRobert Watson mpe->mpe_function; 75395fab37eSRobert Watson break; 754d61198e4SRobert Watson case MAC_CHECK_SOCKET_LISTEN: 755d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_listen = 75695fab37eSRobert Watson mpe->mpe_function; 75795fab37eSRobert Watson break; 75895fab37eSRobert Watson case MAC_CHECK_SOCKET_RELABEL: 75995fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_relabel = 76095fab37eSRobert Watson mpe->mpe_function; 76195fab37eSRobert Watson break; 76295fab37eSRobert Watson case MAC_CHECK_SOCKET_VISIBLE: 76395fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_visible = 76495fab37eSRobert Watson mpe->mpe_function; 76595fab37eSRobert Watson break; 76695fab37eSRobert Watson case MAC_CHECK_VNODE_ACCESS: 76795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_access = 76895fab37eSRobert Watson mpe->mpe_function; 76995fab37eSRobert Watson break; 77095fab37eSRobert Watson case MAC_CHECK_VNODE_CHDIR: 77195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chdir = 77295fab37eSRobert Watson mpe->mpe_function; 77395fab37eSRobert Watson break; 77495fab37eSRobert Watson case MAC_CHECK_VNODE_CHROOT: 77595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chroot = 77695fab37eSRobert Watson mpe->mpe_function; 77795fab37eSRobert Watson break; 77895fab37eSRobert Watson case MAC_CHECK_VNODE_CREATE: 77995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_create = 78095fab37eSRobert Watson mpe->mpe_function; 78195fab37eSRobert Watson break; 78295fab37eSRobert Watson case MAC_CHECK_VNODE_DELETE: 78395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_delete = 78495fab37eSRobert Watson mpe->mpe_function; 78595fab37eSRobert Watson break; 78695fab37eSRobert Watson case MAC_CHECK_VNODE_DELETEACL: 78795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_deleteacl = 78895fab37eSRobert Watson mpe->mpe_function; 78995fab37eSRobert Watson break; 79095fab37eSRobert Watson case MAC_CHECK_VNODE_EXEC: 79195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_exec = 79295fab37eSRobert Watson mpe->mpe_function; 79395fab37eSRobert Watson break; 79495fab37eSRobert Watson case MAC_CHECK_VNODE_GETACL: 79595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getacl = 79695fab37eSRobert Watson mpe->mpe_function; 79795fab37eSRobert Watson break; 79895fab37eSRobert Watson case MAC_CHECK_VNODE_GETEXTATTR: 79995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getextattr = 80095fab37eSRobert Watson mpe->mpe_function; 80195fab37eSRobert Watson break; 80295fab37eSRobert Watson case MAC_CHECK_VNODE_LOOKUP: 80395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_lookup = 80495fab37eSRobert Watson mpe->mpe_function; 80595fab37eSRobert Watson break; 80695fab37eSRobert Watson case MAC_CHECK_VNODE_MMAP_PERMS: 80795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 80895fab37eSRobert Watson mpe->mpe_function; 80995fab37eSRobert Watson break; 81095fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 81195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 81295fab37eSRobert Watson mpe->mpe_function; 81395fab37eSRobert Watson break; 8147f724f8bSRobert Watson case MAC_CHECK_VNODE_POLL: 8157f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_poll = 8167f724f8bSRobert Watson mpe->mpe_function; 8177f724f8bSRobert Watson break; 8187f724f8bSRobert Watson case MAC_CHECK_VNODE_READ: 8197f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_read = 8207f724f8bSRobert Watson mpe->mpe_function; 8217f724f8bSRobert Watson break; 82295fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 82395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 82495fab37eSRobert Watson mpe->mpe_function; 82595fab37eSRobert Watson break; 82695fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 82795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 82895fab37eSRobert Watson mpe->mpe_function; 82995fab37eSRobert Watson break; 83095fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 83195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 83295fab37eSRobert Watson mpe->mpe_function; 83395fab37eSRobert Watson break; 83495fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 83595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 83695fab37eSRobert Watson mpe->mpe_function; 83795fab37eSRobert Watson break; 83895fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 83995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 84095fab37eSRobert Watson mpe->mpe_function; 84195fab37eSRobert Watson break; 84295fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 84395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 84495fab37eSRobert Watson mpe->mpe_function; 84595fab37eSRobert Watson break; 84695fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 84795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 84895fab37eSRobert Watson mpe->mpe_function; 84995fab37eSRobert Watson break; 85095fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 85195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 85295fab37eSRobert Watson mpe->mpe_function; 85395fab37eSRobert Watson break; 85495fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 85595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 85695fab37eSRobert Watson mpe->mpe_function; 85795fab37eSRobert Watson break; 85895fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 85995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 86095fab37eSRobert Watson mpe->mpe_function; 86195fab37eSRobert Watson break; 86295fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 86395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 86495fab37eSRobert Watson mpe->mpe_function; 86595fab37eSRobert Watson break; 86695fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 86795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 86895fab37eSRobert Watson mpe->mpe_function; 86995fab37eSRobert Watson break; 87095fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 87195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 87295fab37eSRobert Watson mpe->mpe_function; 87395fab37eSRobert Watson break; 8747f724f8bSRobert Watson case MAC_CHECK_VNODE_WRITE: 8757f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_write = 8767f724f8bSRobert Watson mpe->mpe_function; 8777f724f8bSRobert Watson break; 87895fab37eSRobert Watson /* 87995fab37eSRobert Watson default: 88095fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 88195fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 88295fab37eSRobert Watson return (EINVAL); 88395fab37eSRobert Watson */ 88495fab37eSRobert Watson } 88595fab37eSRobert Watson } 88695fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 88795fab37eSRobert Watson if (mac_policy_list_busy > 0) { 88895fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 88995fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89095fab37eSRobert Watson mpc->mpc_ops = NULL; 89195fab37eSRobert Watson return (EBUSY); 89295fab37eSRobert Watson } 89395fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 89495fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 89595fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89695fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89795fab37eSRobert Watson mpc->mpc_ops = NULL; 89895fab37eSRobert Watson return (EEXIST); 89995fab37eSRobert Watson } 90095fab37eSRobert Watson } 90195fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 90295fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 90395fab37eSRobert Watson if (slot == 0) { 90495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 90595fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 90695fab37eSRobert Watson mpc->mpc_ops = NULL; 90795fab37eSRobert Watson return (ENOMEM); 90895fab37eSRobert Watson } 90995fab37eSRobert Watson slot--; 91095fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 91195fab37eSRobert Watson *mpc->mpc_field_off = slot; 91295fab37eSRobert Watson } 91395fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 91495fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 91595fab37eSRobert Watson 91695fab37eSRobert Watson /* Per-policy initialization. */ 91795fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 91895fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 91995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 92095fab37eSRobert Watson 92195fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 92295fab37eSRobert Watson mpc->mpc_name); 92395fab37eSRobert Watson 92495fab37eSRobert Watson return (0); 92595fab37eSRobert Watson } 92695fab37eSRobert Watson 92795fab37eSRobert Watson static int 92895fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 92995fab37eSRobert Watson { 93095fab37eSRobert Watson 931ea599aa0SRobert Watson /* 932ea599aa0SRobert Watson * If we fail the load, we may get a request to unload. Check 933ea599aa0SRobert Watson * to see if we did the run-time registration, and if not, 934ea599aa0SRobert Watson * silently succeed. 935ea599aa0SRobert Watson */ 936ea599aa0SRobert Watson MAC_POLICY_LIST_LOCK(); 937ea599aa0SRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) == 0) { 938ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 939ea599aa0SRobert Watson return (0); 940ea599aa0SRobert Watson } 94195fab37eSRobert Watson #if 0 94295fab37eSRobert Watson /* 94395fab37eSRobert Watson * Don't allow unloading modules with private data. 94495fab37eSRobert Watson */ 945ea599aa0SRobert Watson if (mpc->mpc_field_off != NULL) { 946ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 94795fab37eSRobert Watson return (EBUSY); 948ea599aa0SRobert Watson } 94995fab37eSRobert Watson #endif 950ea599aa0SRobert Watson /* 951ea599aa0SRobert Watson * Only allow the unload to proceed if the module is unloadable 952ea599aa0SRobert Watson * by its own definition. 953ea599aa0SRobert Watson */ 954ea599aa0SRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) { 955ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 95695fab37eSRobert Watson return (EBUSY); 957ea599aa0SRobert Watson } 958ea599aa0SRobert Watson /* 959ea599aa0SRobert Watson * Right now, we EBUSY if the list is in use. In the future, 960ea599aa0SRobert Watson * for reliability reasons, we might want to sleep and wakeup 961ea599aa0SRobert Watson * later to try again. 962ea599aa0SRobert Watson */ 96395fab37eSRobert Watson if (mac_policy_list_busy > 0) { 96495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 96595fab37eSRobert Watson return (EBUSY); 96695fab37eSRobert Watson } 96795fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 96895fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 96995fab37eSRobert Watson 97095fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 97195fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 97295fab37eSRobert Watson 97395fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 97495fab37eSRobert Watson mpc->mpc_ops = NULL; 97595fab37eSRobert Watson 97695fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 97795fab37eSRobert Watson mpc->mpc_name); 97895fab37eSRobert Watson 97995fab37eSRobert Watson return (0); 98095fab37eSRobert Watson } 98195fab37eSRobert Watson 98295fab37eSRobert Watson /* 98395fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 98495fab37eSRobert Watson * value with the higher precedence. 98595fab37eSRobert Watson */ 98695fab37eSRobert Watson static int 98795fab37eSRobert Watson error_select(int error1, int error2) 98895fab37eSRobert Watson { 98995fab37eSRobert Watson 99095fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 99195fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 99295fab37eSRobert Watson return (EDEADLK); 99395fab37eSRobert Watson 99495fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 99595fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 99695fab37eSRobert Watson return (EINVAL); 99795fab37eSRobert Watson 99895fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 99995fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 100095fab37eSRobert Watson return (ESRCH); 100195fab37eSRobert Watson 100295fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 100395fab37eSRobert Watson return (ENOENT); 100495fab37eSRobert Watson 100595fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 100695fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 100795fab37eSRobert Watson return (EACCES); 100895fab37eSRobert Watson 100995fab37eSRobert Watson /* Precedence goes to privilege. */ 101095fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 101195fab37eSRobert Watson return (EPERM); 101295fab37eSRobert Watson 101395fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 101495fab37eSRobert Watson if (error1 != 0) 101595fab37eSRobert Watson return (error1); 101695fab37eSRobert Watson return (error2); 101795fab37eSRobert Watson } 101895fab37eSRobert Watson 101908bcdc58SRobert Watson static void 102008bcdc58SRobert Watson mac_init_label(struct label *label) 102108bcdc58SRobert Watson { 102208bcdc58SRobert Watson 102308bcdc58SRobert Watson bzero(label, sizeof(*label)); 102408bcdc58SRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 102508bcdc58SRobert Watson } 102608bcdc58SRobert Watson 102708bcdc58SRobert Watson static void 102808bcdc58SRobert Watson mac_destroy_label(struct label *label) 102908bcdc58SRobert Watson { 103008bcdc58SRobert Watson 103108bcdc58SRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 103208bcdc58SRobert Watson ("destroying uninitialized label")); 103308bcdc58SRobert Watson 103408bcdc58SRobert Watson bzero(label, sizeof(*label)); 103508bcdc58SRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 103608bcdc58SRobert Watson } 103708bcdc58SRobert Watson 103808bcdc58SRobert Watson static void 103908bcdc58SRobert Watson mac_init_structmac(struct mac *mac) 104008bcdc58SRobert Watson { 104108bcdc58SRobert Watson 104208bcdc58SRobert Watson bzero(mac, sizeof(*mac)); 104308bcdc58SRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 104408bcdc58SRobert Watson } 104508bcdc58SRobert Watson 104608bcdc58SRobert Watson void 104787807196SRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 104808bcdc58SRobert Watson { 104908bcdc58SRobert Watson 105087807196SRobert Watson mac_init_label(&bpf_d->bd_label); 105187807196SRobert Watson MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label); 105208bcdc58SRobert Watson #ifdef MAC_DEBUG 105387807196SRobert Watson atomic_add_int(&nmacbpfdescs, 1); 105408bcdc58SRobert Watson #endif 105508bcdc58SRobert Watson } 105608bcdc58SRobert Watson 105708bcdc58SRobert Watson void 105808bcdc58SRobert Watson mac_init_cred(struct ucred *cr) 105908bcdc58SRobert Watson { 106008bcdc58SRobert Watson 106108bcdc58SRobert Watson mac_init_label(&cr->cr_label); 106208bcdc58SRobert Watson MAC_PERFORM(init_cred_label, &cr->cr_label); 106308bcdc58SRobert Watson #ifdef MAC_DEBUG 106408bcdc58SRobert Watson atomic_add_int(&nmaccreds, 1); 106508bcdc58SRobert Watson #endif 106608bcdc58SRobert Watson } 106708bcdc58SRobert Watson 106808bcdc58SRobert Watson void 106987807196SRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 107008bcdc58SRobert Watson { 107108bcdc58SRobert Watson 107287807196SRobert Watson mac_init_label(&de->de_label); 107387807196SRobert Watson MAC_PERFORM(init_devfsdirent_label, &de->de_label); 107408bcdc58SRobert Watson #ifdef MAC_DEBUG 107587807196SRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 107608bcdc58SRobert Watson #endif 107708bcdc58SRobert Watson } 107808bcdc58SRobert Watson 107908bcdc58SRobert Watson void 108008bcdc58SRobert Watson mac_init_ifnet(struct ifnet *ifp) 108108bcdc58SRobert Watson { 108208bcdc58SRobert Watson 108308bcdc58SRobert Watson mac_init_label(&ifp->if_label); 108408bcdc58SRobert Watson MAC_PERFORM(init_ifnet_label, &ifp->if_label); 108508bcdc58SRobert Watson #ifdef MAC_DEBUG 108608bcdc58SRobert Watson atomic_add_int(&nmacifnets, 1); 108708bcdc58SRobert Watson #endif 108808bcdc58SRobert Watson } 108908bcdc58SRobert Watson 109008bcdc58SRobert Watson void 109108bcdc58SRobert Watson mac_init_ipq(struct ipq *ipq) 109208bcdc58SRobert Watson { 109308bcdc58SRobert Watson 109408bcdc58SRobert Watson mac_init_label(&ipq->ipq_label); 109508bcdc58SRobert Watson MAC_PERFORM(init_ipq_label, &ipq->ipq_label); 109608bcdc58SRobert Watson #ifdef MAC_DEBUG 109708bcdc58SRobert Watson atomic_add_int(&nmacipqs, 1); 109808bcdc58SRobert Watson #endif 109908bcdc58SRobert Watson } 110008bcdc58SRobert Watson 110187807196SRobert Watson int 110287807196SRobert Watson mac_init_mbuf(struct mbuf *m, int flag) 110308bcdc58SRobert Watson { 110456c15412SRobert Watson int error; 110556c15412SRobert Watson 110687807196SRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 110708bcdc58SRobert Watson 110887807196SRobert Watson mac_init_label(&m->m_pkthdr.label); 110987807196SRobert Watson 111056c15412SRobert Watson MAC_CHECK(init_mbuf_label, &m->m_pkthdr.label, flag); 111156c15412SRobert Watson if (error) { 111256c15412SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 111356c15412SRobert Watson mac_destroy_label(&m->m_pkthdr.label); 111456c15412SRobert Watson } 111556c15412SRobert Watson 111608bcdc58SRobert Watson #ifdef MAC_DEBUG 111756c15412SRobert Watson if (error == 0) 111887807196SRobert Watson atomic_add_int(&nmacmbufs, 1); 111908bcdc58SRobert Watson #endif 112056c15412SRobert Watson return (error); 112108bcdc58SRobert Watson } 112208bcdc58SRobert Watson 112308bcdc58SRobert Watson void 112487807196SRobert Watson mac_init_mount(struct mount *mp) 112508bcdc58SRobert Watson { 112608bcdc58SRobert Watson 112787807196SRobert Watson mac_init_label(&mp->mnt_mntlabel); 112887807196SRobert Watson mac_init_label(&mp->mnt_fslabel); 112987807196SRobert Watson MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel); 113087807196SRobert Watson MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel); 113108bcdc58SRobert Watson #ifdef MAC_DEBUG 113287807196SRobert Watson atomic_add_int(&nmacmounts, 1); 113308bcdc58SRobert Watson #endif 113408bcdc58SRobert Watson } 113508bcdc58SRobert Watson 113608bcdc58SRobert Watson void 113708bcdc58SRobert Watson mac_init_pipe(struct pipe *pipe) 113808bcdc58SRobert Watson { 113908bcdc58SRobert Watson struct label *label; 114008bcdc58SRobert Watson 114108bcdc58SRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 114208bcdc58SRobert Watson mac_init_label(label); 114308bcdc58SRobert Watson pipe->pipe_label = label; 114408bcdc58SRobert Watson pipe->pipe_peer->pipe_label = label; 114508bcdc58SRobert Watson MAC_PERFORM(init_pipe_label, pipe->pipe_label); 114608bcdc58SRobert Watson #ifdef MAC_DEBUG 114708bcdc58SRobert Watson atomic_add_int(&nmacpipes, 1); 114808bcdc58SRobert Watson #endif 114908bcdc58SRobert Watson } 115008bcdc58SRobert Watson 115108bcdc58SRobert Watson void 115287807196SRobert Watson mac_init_socket(struct socket *socket) 115308bcdc58SRobert Watson { 115408bcdc58SRobert Watson 115587807196SRobert Watson mac_init_label(&socket->so_label); 115687807196SRobert Watson mac_init_label(&socket->so_peerlabel); 115787807196SRobert Watson MAC_PERFORM(init_socket_label, &socket->so_label); 115887807196SRobert Watson MAC_PERFORM(init_socket_peer_label, &socket->so_peerlabel); 115908bcdc58SRobert Watson #ifdef MAC_DEBUG 116087807196SRobert Watson atomic_add_int(&nmacsockets, 1); 116187807196SRobert Watson #endif 116287807196SRobert Watson } 116387807196SRobert Watson 116487807196SRobert Watson static void 116587807196SRobert Watson mac_init_temp(struct label *label) 116687807196SRobert Watson { 116787807196SRobert Watson 116887807196SRobert Watson mac_init_label(label); 116987807196SRobert Watson MAC_PERFORM(init_temp_label, label); 117087807196SRobert Watson #ifdef MAC_DEBUG 117187807196SRobert Watson atomic_add_int(&nmactemp, 1); 117208bcdc58SRobert Watson #endif 117308bcdc58SRobert Watson } 117408bcdc58SRobert Watson 117508bcdc58SRobert Watson void 117687807196SRobert Watson mac_init_vnode(struct vnode *vp) 117708bcdc58SRobert Watson { 117808bcdc58SRobert Watson 117987807196SRobert Watson mac_init_label(&vp->v_label); 118087807196SRobert Watson MAC_PERFORM(init_vnode_label, &vp->v_label); 118108bcdc58SRobert Watson #ifdef MAC_DEBUG 118287807196SRobert Watson atomic_add_int(&nmacvnodes, 1); 118308bcdc58SRobert Watson #endif 118408bcdc58SRobert Watson } 118508bcdc58SRobert Watson 118608bcdc58SRobert Watson void 118708bcdc58SRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 118808bcdc58SRobert Watson { 118908bcdc58SRobert Watson 119008bcdc58SRobert Watson MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label); 119108bcdc58SRobert Watson mac_destroy_label(&bpf_d->bd_label); 119208bcdc58SRobert Watson #ifdef MAC_DEBUG 119308bcdc58SRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 119408bcdc58SRobert Watson #endif 119508bcdc58SRobert Watson } 119608bcdc58SRobert Watson 119708bcdc58SRobert Watson void 119887807196SRobert Watson mac_destroy_cred(struct ucred *cr) 119908bcdc58SRobert Watson { 120008bcdc58SRobert Watson 120187807196SRobert Watson MAC_PERFORM(destroy_cred_label, &cr->cr_label); 120287807196SRobert Watson mac_destroy_label(&cr->cr_label); 120308bcdc58SRobert Watson #ifdef MAC_DEBUG 120487807196SRobert Watson atomic_subtract_int(&nmaccreds, 1); 120587807196SRobert Watson #endif 120687807196SRobert Watson } 120787807196SRobert Watson 120887807196SRobert Watson void 120987807196SRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 121087807196SRobert Watson { 121187807196SRobert Watson 121287807196SRobert Watson MAC_PERFORM(destroy_devfsdirent_label, &de->de_label); 121387807196SRobert Watson mac_destroy_label(&de->de_label); 121487807196SRobert Watson #ifdef MAC_DEBUG 121587807196SRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 121687807196SRobert Watson #endif 121787807196SRobert Watson } 121887807196SRobert Watson 121987807196SRobert Watson void 122087807196SRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 122187807196SRobert Watson { 122287807196SRobert Watson 122387807196SRobert Watson MAC_PERFORM(destroy_ifnet_label, &ifp->if_label); 122487807196SRobert Watson mac_destroy_label(&ifp->if_label); 122587807196SRobert Watson #ifdef MAC_DEBUG 122687807196SRobert Watson atomic_subtract_int(&nmacifnets, 1); 122787807196SRobert Watson #endif 122887807196SRobert Watson } 122987807196SRobert Watson 123087807196SRobert Watson void 123187807196SRobert Watson mac_destroy_ipq(struct ipq *ipq) 123287807196SRobert Watson { 123387807196SRobert Watson 123487807196SRobert Watson MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label); 123587807196SRobert Watson mac_destroy_label(&ipq->ipq_label); 123687807196SRobert Watson #ifdef MAC_DEBUG 123787807196SRobert Watson atomic_subtract_int(&nmacipqs, 1); 123887807196SRobert Watson #endif 123987807196SRobert Watson } 124087807196SRobert Watson 124187807196SRobert Watson void 124287807196SRobert Watson mac_destroy_mbuf(struct mbuf *m) 124387807196SRobert Watson { 124487807196SRobert Watson 124587807196SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 124687807196SRobert Watson mac_destroy_label(&m->m_pkthdr.label); 124787807196SRobert Watson #ifdef MAC_DEBUG 124887807196SRobert Watson atomic_subtract_int(&nmacmbufs, 1); 124908bcdc58SRobert Watson #endif 125008bcdc58SRobert Watson } 125108bcdc58SRobert Watson 125208bcdc58SRobert Watson void 125308bcdc58SRobert Watson mac_destroy_mount(struct mount *mp) 125408bcdc58SRobert Watson { 125508bcdc58SRobert Watson 125608bcdc58SRobert Watson MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel); 125708bcdc58SRobert Watson MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel); 125808bcdc58SRobert Watson mac_destroy_label(&mp->mnt_fslabel); 125908bcdc58SRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 126008bcdc58SRobert Watson #ifdef MAC_DEBUG 126108bcdc58SRobert Watson atomic_subtract_int(&nmacmounts, 1); 126208bcdc58SRobert Watson #endif 126308bcdc58SRobert Watson } 126408bcdc58SRobert Watson 126587807196SRobert Watson void 126687807196SRobert Watson mac_destroy_pipe(struct pipe *pipe) 126708bcdc58SRobert Watson { 126808bcdc58SRobert Watson 126987807196SRobert Watson MAC_PERFORM(destroy_pipe_label, pipe->pipe_label); 127087807196SRobert Watson mac_destroy_label(pipe->pipe_label); 127187807196SRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 127208bcdc58SRobert Watson #ifdef MAC_DEBUG 127387807196SRobert Watson atomic_subtract_int(&nmacpipes, 1); 127487807196SRobert Watson #endif 127587807196SRobert Watson } 127687807196SRobert Watson 127787807196SRobert Watson void 127887807196SRobert Watson mac_destroy_socket(struct socket *socket) 127987807196SRobert Watson { 128087807196SRobert Watson 128187807196SRobert Watson MAC_PERFORM(destroy_socket_label, &socket->so_label); 128287807196SRobert Watson MAC_PERFORM(destroy_socket_peer_label, &socket->so_peerlabel); 128387807196SRobert Watson mac_destroy_label(&socket->so_label); 128487807196SRobert Watson mac_destroy_label(&socket->so_peerlabel); 128587807196SRobert Watson #ifdef MAC_DEBUG 128687807196SRobert Watson atomic_subtract_int(&nmacsockets, 1); 128708bcdc58SRobert Watson #endif 128808bcdc58SRobert Watson } 128908bcdc58SRobert Watson 129008bcdc58SRobert Watson static void 129108bcdc58SRobert Watson mac_destroy_temp(struct label *label) 129208bcdc58SRobert Watson { 129308bcdc58SRobert Watson 129408bcdc58SRobert Watson MAC_PERFORM(destroy_temp_label, label); 129508bcdc58SRobert Watson mac_destroy_label(label); 129608bcdc58SRobert Watson #ifdef MAC_DEBUG 129708bcdc58SRobert Watson atomic_subtract_int(&nmactemp, 1); 129808bcdc58SRobert Watson #endif 129908bcdc58SRobert Watson } 130008bcdc58SRobert Watson 130108bcdc58SRobert Watson void 130208bcdc58SRobert Watson mac_destroy_vnode(struct vnode *vp) 130308bcdc58SRobert Watson { 130408bcdc58SRobert Watson 130508bcdc58SRobert Watson MAC_PERFORM(destroy_vnode_label, &vp->v_label); 130608bcdc58SRobert Watson mac_destroy_label(&vp->v_label); 130708bcdc58SRobert Watson #ifdef MAC_DEBUG 130808bcdc58SRobert Watson atomic_subtract_int(&nmacvnodes, 1); 130908bcdc58SRobert Watson #endif 131008bcdc58SRobert Watson } 131108bcdc58SRobert Watson 131269bbb5b1SRobert Watson static int 131369bbb5b1SRobert Watson mac_externalize(struct label *label, struct mac *mac) 131469bbb5b1SRobert Watson { 131569bbb5b1SRobert Watson int error; 131669bbb5b1SRobert Watson 131769bbb5b1SRobert Watson mac_init_structmac(mac); 131869bbb5b1SRobert Watson MAC_CHECK(externalize, label, mac); 131969bbb5b1SRobert Watson 132069bbb5b1SRobert Watson return (error); 132169bbb5b1SRobert Watson } 132269bbb5b1SRobert Watson 132369bbb5b1SRobert Watson static int 132469bbb5b1SRobert Watson mac_internalize(struct label *label, struct mac *mac) 132569bbb5b1SRobert Watson { 132669bbb5b1SRobert Watson int error; 132769bbb5b1SRobert Watson 132869bbb5b1SRobert Watson mac_init_temp(label); 132969bbb5b1SRobert Watson MAC_CHECK(internalize, label, mac); 133069bbb5b1SRobert Watson if (error) 133169bbb5b1SRobert Watson mac_destroy_temp(label); 133269bbb5b1SRobert Watson 133369bbb5b1SRobert Watson return (error); 133469bbb5b1SRobert Watson } 133569bbb5b1SRobert Watson 133669bbb5b1SRobert Watson /* 133769bbb5b1SRobert Watson * Initialize MAC label for the first kernel process, from which other 133869bbb5b1SRobert Watson * kernel processes and threads are spawned. 133969bbb5b1SRobert Watson */ 134069bbb5b1SRobert Watson void 134169bbb5b1SRobert Watson mac_create_proc0(struct ucred *cred) 134269bbb5b1SRobert Watson { 134369bbb5b1SRobert Watson 134469bbb5b1SRobert Watson MAC_PERFORM(create_proc0, cred); 134569bbb5b1SRobert Watson } 134669bbb5b1SRobert Watson 134769bbb5b1SRobert Watson /* 134869bbb5b1SRobert Watson * Initialize MAC label for the first userland process, from which other 134969bbb5b1SRobert Watson * userland processes and threads are spawned. 135069bbb5b1SRobert Watson */ 135169bbb5b1SRobert Watson void 135269bbb5b1SRobert Watson mac_create_proc1(struct ucred *cred) 135369bbb5b1SRobert Watson { 135469bbb5b1SRobert Watson 135569bbb5b1SRobert Watson MAC_PERFORM(create_proc1, cred); 135669bbb5b1SRobert Watson } 135769bbb5b1SRobert Watson 135869bbb5b1SRobert Watson void 135969bbb5b1SRobert Watson mac_thread_userret(struct thread *td) 136069bbb5b1SRobert Watson { 136169bbb5b1SRobert Watson 136269bbb5b1SRobert Watson MAC_PERFORM(thread_userret, td); 136369bbb5b1SRobert Watson } 136469bbb5b1SRobert Watson 136569bbb5b1SRobert Watson /* 136669bbb5b1SRobert Watson * When a new process is created, its label must be initialized. Generally, 136769bbb5b1SRobert Watson * this involves inheritence from the parent process, modulo possible 136869bbb5b1SRobert Watson * deltas. This function allows that processing to take place. 136969bbb5b1SRobert Watson */ 137069bbb5b1SRobert Watson void 137169bbb5b1SRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 137269bbb5b1SRobert Watson { 137369bbb5b1SRobert Watson 137469bbb5b1SRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 137569bbb5b1SRobert Watson } 137669bbb5b1SRobert Watson 137795fab37eSRobert Watson void 137895fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 137995fab37eSRobert Watson { 138095fab37eSRobert Watson 138195fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 138295fab37eSRobert Watson } 138395fab37eSRobert Watson 138495fab37eSRobert Watson void 138595fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 138695fab37eSRobert Watson { 138795fab37eSRobert Watson 138895fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 138995fab37eSRobert Watson } 139095fab37eSRobert Watson 139195fab37eSRobert Watson /* 139295fab37eSRobert Watson * Support callout for policies that manage their own externalization 139395fab37eSRobert Watson * using extended attributes. 139495fab37eSRobert Watson */ 139595fab37eSRobert Watson static int 139695fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 139795fab37eSRobert Watson { 139895fab37eSRobert Watson int error; 139995fab37eSRobert Watson 140095fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 140195fab37eSRobert Watson &mp->mnt_fslabel); 140295fab37eSRobert Watson 140395fab37eSRobert Watson return (error); 140495fab37eSRobert Watson } 140595fab37eSRobert Watson 140695fab37eSRobert Watson /* 140795fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 140895fab37eSRobert Watson * vnode. 140995fab37eSRobert Watson */ 141095fab37eSRobert Watson static int 141195fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 141295fab37eSRobert Watson { 141395fab37eSRobert Watson int error; 141495fab37eSRobert Watson 141595fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 141695fab37eSRobert Watson 141795fab37eSRobert Watson return (error); 141895fab37eSRobert Watson } 141995fab37eSRobert Watson 142095fab37eSRobert Watson /* 142195fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 142295fab37eSRobert Watson * the mountpoint. 142395fab37eSRobert Watson */ 142495fab37eSRobert Watson void 142595fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 142695fab37eSRobert Watson { 142795fab37eSRobert Watson 142895fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 142995fab37eSRobert Watson &mp->mnt_fslabel); 143095fab37eSRobert Watson 1431e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 143295fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 1433e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 143495fab37eSRobert Watson } 143595fab37eSRobert Watson 143695fab37eSRobert Watson /* 143795fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 143895fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 143995fab37eSRobert Watson * extended attributes. 144095fab37eSRobert Watson */ 144195fab37eSRobert Watson int 144295fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 144395fab37eSRobert Watson { 144495fab37eSRobert Watson struct vnode *vp = ap->a_vp; 144595fab37eSRobert Watson struct mac extmac; 144695fab37eSRobert Watson int buflen, error; 144795fab37eSRobert Watson 144895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 144995fab37eSRobert Watson 145095fab37eSRobert Watson /* 145195fab37eSRobert Watson * Call out to external policies first. Order doesn't really 145295fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 145395fab37eSRobert Watson */ 145495fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 145595fab37eSRobert Watson if (error) 145695fab37eSRobert Watson return (error); 145795fab37eSRobert Watson 145895fab37eSRobert Watson buflen = sizeof(extmac); 145995fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 146095fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 146195fab37eSRobert Watson (char *)&extmac, curthread); 146295fab37eSRobert Watson switch (error) { 146395fab37eSRobert Watson case 0: 146495fab37eSRobert Watson /* Got it */ 146595fab37eSRobert Watson break; 146695fab37eSRobert Watson 146795fab37eSRobert Watson case ENOATTR: 146895fab37eSRobert Watson /* 146995fab37eSRobert Watson * Use the label from the mount point. 147095fab37eSRobert Watson */ 147195fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 147295fab37eSRobert Watson return (0); 147395fab37eSRobert Watson 147495fab37eSRobert Watson case EOPNOTSUPP: 147595fab37eSRobert Watson default: 147695fab37eSRobert Watson /* Fail horribly. */ 147795fab37eSRobert Watson return (error); 147895fab37eSRobert Watson } 147995fab37eSRobert Watson 148095fab37eSRobert Watson if (buflen != sizeof(extmac)) 148195fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 148295fab37eSRobert Watson if (error == 0) 148395fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 148495fab37eSRobert Watson if (error == 0) 1485e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 148695fab37eSRobert Watson else { 148795fab37eSRobert Watson struct vattr va; 148895fab37eSRobert Watson 148995fab37eSRobert Watson printf("Corrupted label on %s", 149095fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 149195fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 149295fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 14936be0c25eSRobert Watson #ifdef MAC_DEBUG 149495fab37eSRobert Watson if (mac_debug_label_fallback) { 149595fab37eSRobert Watson printf(", falling back.\n"); 149695fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 149795fab37eSRobert Watson error = 0; 149895fab37eSRobert Watson } else { 14996be0c25eSRobert Watson #endif 150095fab37eSRobert Watson printf(".\n"); 150195fab37eSRobert Watson error = EPERM; 15026be0c25eSRobert Watson #ifdef MAC_DEBUG 150395fab37eSRobert Watson } 15046be0c25eSRobert Watson #endif 150595fab37eSRobert Watson } 150695fab37eSRobert Watson 150795fab37eSRobert Watson return (error); 150895fab37eSRobert Watson } 150995fab37eSRobert Watson 151095fab37eSRobert Watson /* 151195fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 151295fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 151395fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 151495fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 151595fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 151695fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 151795fab37eSRobert Watson * all vnodes. 151895fab37eSRobert Watson */ 151995fab37eSRobert Watson static int 152095fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 152195fab37eSRobert Watson { 152295fab37eSRobert Watson int error; 152395fab37eSRobert Watson 152495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 152595fab37eSRobert Watson 152695fab37eSRobert Watson if (vp->v_mount == NULL) { 152795fab37eSRobert Watson /* 152895fab37eSRobert Watson Eventually, we probably want to special-case refreshing 152995fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 153095fab37eSRobert Watson that case might be handled here. 153195fab37eSRobert Watson 153295fab37eSRobert Watson mac_update_vnode_deadfs(vp); 153395fab37eSRobert Watson return (0); 153495fab37eSRobert Watson */ 153595fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 153606be2aaaSNate Lawson if (vp->v_type != VNON) 153795fab37eSRobert Watson printf( 153806be2aaaSNate Lawson "vn_refreshlabel: null v_mount with non-VNON\n"); 153995fab37eSRobert Watson return (EBADF); 154095fab37eSRobert Watson } 154195fab37eSRobert Watson 1542e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 154395fab37eSRobert Watson mac_vnode_label_cache_hits++; 154495fab37eSRobert Watson return (0); 154595fab37eSRobert Watson } else 154695fab37eSRobert Watson mac_vnode_label_cache_misses++; 154795fab37eSRobert Watson 154895fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 154995fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 155095fab37eSRobert Watson return (0); 155195fab37eSRobert Watson } 155295fab37eSRobert Watson 155395fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 155495fab37eSRobert Watson switch (error) { 155595fab37eSRobert Watson case EOPNOTSUPP: 155695fab37eSRobert Watson /* 155795fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 155895fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 155995fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 156095fab37eSRobert Watson * about doing this. 156195fab37eSRobert Watson */ 156295fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 156395fab37eSRobert Watson error = 0; 156495fab37eSRobert Watson default: 156595fab37eSRobert Watson return (error); 156695fab37eSRobert Watson } 156795fab37eSRobert Watson } 156895fab37eSRobert Watson 156995fab37eSRobert Watson /* 157095fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 157195fab37eSRobert Watson * function must be called after EA service is available for the vnode, 157295fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 157395fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 157495fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 157595fab37eSRobert Watson */ 157695fab37eSRobert Watson int 157795fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 157895fab37eSRobert Watson { 157995fab37eSRobert Watson struct mac extmac; 158095fab37eSRobert Watson int error; 158195fab37eSRobert Watson 1582e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 158395fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 158495fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 158595fab37eSRobert Watson } else { 158695fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 158795fab37eSRobert Watson if (error) 158895fab37eSRobert Watson return (error); 158995fab37eSRobert Watson 159095fab37eSRobert Watson /* 159195fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 159295fab37eSRobert Watson * disk. If we fail, return a failure to abort the 159395fab37eSRobert Watson * create operation. Really, this failure shouldn't 159495fab37eSRobert Watson * happen except in fairly unusual circumstances (out 159595fab37eSRobert Watson * of disk, etc). 159695fab37eSRobert Watson */ 159795fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 159895fab37eSRobert Watson 159995fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 160095fab37eSRobert Watson if (error) 160195fab37eSRobert Watson return (error); 160295fab37eSRobert Watson 160395fab37eSRobert Watson /* 160495fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 160595fab37eSRobert Watson * directly manage their extended attributes. 160695fab37eSRobert Watson */ 160795fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 160895fab37eSRobert Watson if (error) 160995fab37eSRobert Watson return (error); 161095fab37eSRobert Watson 161195fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 161295fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 161395fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 161495fab37eSRobert Watson if (error == 0) 1615e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 161695fab37eSRobert Watson else { 161795fab37eSRobert Watson #if 0 161895fab37eSRobert Watson /* 161995fab37eSRobert Watson * In theory, we could have fall-back behavior here. 162095fab37eSRobert Watson * It would probably be incorrect. 162195fab37eSRobert Watson */ 162295fab37eSRobert Watson #endif 162395fab37eSRobert Watson return (error); 162495fab37eSRobert Watson } 162595fab37eSRobert Watson } 162695fab37eSRobert Watson 162795fab37eSRobert Watson return (0); 162895fab37eSRobert Watson } 162995fab37eSRobert Watson 163095fab37eSRobert Watson void 163195fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 163295fab37eSRobert Watson { 163395fab37eSRobert Watson int error; 163495fab37eSRobert Watson 163595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 163695fab37eSRobert Watson 163795fab37eSRobert Watson error = vn_refreshlabel(vp, old); 163895fab37eSRobert Watson if (error) { 163995fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 164095fab37eSRobert Watson error); 164195fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 164295fab37eSRobert Watson } 164395fab37eSRobert Watson 164495fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 164595fab37eSRobert Watson } 164695fab37eSRobert Watson 164795fab37eSRobert Watson int 164895fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 164995fab37eSRobert Watson { 165095fab37eSRobert Watson int error, result; 165195fab37eSRobert Watson 165295fab37eSRobert Watson error = vn_refreshlabel(vp, old); 165395fab37eSRobert Watson if (error) 165495fab37eSRobert Watson return (error); 165595fab37eSRobert Watson 165695fab37eSRobert Watson result = 0; 165795fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 165895fab37eSRobert Watson 165995fab37eSRobert Watson return (result); 166095fab37eSRobert Watson } 166195fab37eSRobert Watson 166295fab37eSRobert Watson int 166395fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 166495fab37eSRobert Watson { 166595fab37eSRobert Watson int error; 166695fab37eSRobert Watson 166795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 166895fab37eSRobert Watson 166995fab37eSRobert Watson if (!mac_enforce_fs) 167095fab37eSRobert Watson return (0); 167195fab37eSRobert Watson 167295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 167395fab37eSRobert Watson if (error) 167495fab37eSRobert Watson return (error); 167595fab37eSRobert Watson 167695fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 167795fab37eSRobert Watson return (error); 167895fab37eSRobert Watson } 167995fab37eSRobert Watson 168095fab37eSRobert Watson int 168195fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 168295fab37eSRobert Watson { 168395fab37eSRobert Watson int error; 168495fab37eSRobert Watson 168595fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 168695fab37eSRobert Watson 168795fab37eSRobert Watson if (!mac_enforce_fs) 168895fab37eSRobert Watson return (0); 168995fab37eSRobert Watson 169095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 169195fab37eSRobert Watson if (error) 169295fab37eSRobert Watson return (error); 169395fab37eSRobert Watson 169495fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 169595fab37eSRobert Watson return (error); 169695fab37eSRobert Watson } 169795fab37eSRobert Watson 169895fab37eSRobert Watson int 169995fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 170095fab37eSRobert Watson { 170195fab37eSRobert Watson int error; 170295fab37eSRobert Watson 170395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 170495fab37eSRobert Watson 170595fab37eSRobert Watson if (!mac_enforce_fs) 170695fab37eSRobert Watson return (0); 170795fab37eSRobert Watson 170895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 170995fab37eSRobert Watson if (error) 171095fab37eSRobert Watson return (error); 171195fab37eSRobert Watson 171295fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 171395fab37eSRobert Watson return (error); 171495fab37eSRobert Watson } 171595fab37eSRobert Watson 171695fab37eSRobert Watson int 171795fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 171895fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 171995fab37eSRobert Watson { 172095fab37eSRobert Watson int error; 172195fab37eSRobert Watson 172295fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 172395fab37eSRobert Watson 172495fab37eSRobert Watson if (!mac_enforce_fs) 172595fab37eSRobert Watson return (0); 172695fab37eSRobert Watson 172795fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 172895fab37eSRobert Watson if (error) 172995fab37eSRobert Watson return (error); 173095fab37eSRobert Watson 173195fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 173295fab37eSRobert Watson return (error); 173395fab37eSRobert Watson } 173495fab37eSRobert Watson 173595fab37eSRobert Watson int 173695fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 173795fab37eSRobert Watson struct componentname *cnp) 173895fab37eSRobert Watson { 173995fab37eSRobert Watson int error; 174095fab37eSRobert Watson 174195fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 174295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 174395fab37eSRobert Watson 174495fab37eSRobert Watson if (!mac_enforce_fs) 174595fab37eSRobert Watson return (0); 174695fab37eSRobert Watson 174795fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 174895fab37eSRobert Watson if (error) 174995fab37eSRobert Watson return (error); 175095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 175195fab37eSRobert Watson if (error) 175295fab37eSRobert Watson return (error); 175395fab37eSRobert Watson 175495fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 175595fab37eSRobert Watson &vp->v_label, cnp); 175695fab37eSRobert Watson return (error); 175795fab37eSRobert Watson } 175895fab37eSRobert Watson 175995fab37eSRobert Watson int 176095fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 176195fab37eSRobert Watson acl_type_t type) 176295fab37eSRobert Watson { 176395fab37eSRobert Watson int error; 176495fab37eSRobert Watson 176595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 176695fab37eSRobert Watson 176795fab37eSRobert Watson if (!mac_enforce_fs) 176895fab37eSRobert Watson return (0); 176995fab37eSRobert Watson 177095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 177195fab37eSRobert Watson if (error) 177295fab37eSRobert Watson return (error); 177395fab37eSRobert Watson 177495fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 177595fab37eSRobert Watson return (error); 177695fab37eSRobert Watson } 177795fab37eSRobert Watson 177895fab37eSRobert Watson int 177995fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 178095fab37eSRobert Watson { 178195fab37eSRobert Watson int error; 178295fab37eSRobert Watson 1783851704bbSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1784851704bbSRobert Watson 178595fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 178695fab37eSRobert Watson return (0); 178795fab37eSRobert Watson 178895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 178995fab37eSRobert Watson if (error) 179095fab37eSRobert Watson return (error); 179195fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 179295fab37eSRobert Watson 179395fab37eSRobert Watson return (error); 179495fab37eSRobert Watson } 179595fab37eSRobert Watson 179695fab37eSRobert Watson int 179795fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 179895fab37eSRobert Watson { 179995fab37eSRobert Watson int error; 180095fab37eSRobert Watson 180195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 180295fab37eSRobert Watson 180395fab37eSRobert Watson if (!mac_enforce_fs) 180495fab37eSRobert Watson return (0); 180595fab37eSRobert Watson 180695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 180795fab37eSRobert Watson if (error) 180895fab37eSRobert Watson return (error); 180995fab37eSRobert Watson 181095fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 181195fab37eSRobert Watson return (error); 181295fab37eSRobert Watson } 181395fab37eSRobert Watson 181495fab37eSRobert Watson int 181595fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 181695fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 181795fab37eSRobert Watson { 181895fab37eSRobert Watson int error; 181995fab37eSRobert Watson 182095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 182195fab37eSRobert Watson 182295fab37eSRobert Watson if (!mac_enforce_fs) 182395fab37eSRobert Watson return (0); 182495fab37eSRobert Watson 182595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 182695fab37eSRobert Watson if (error) 182795fab37eSRobert Watson return (error); 182895fab37eSRobert Watson 182995fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 183095fab37eSRobert Watson attrnamespace, name, uio); 183195fab37eSRobert Watson return (error); 183295fab37eSRobert Watson } 183395fab37eSRobert Watson 183495fab37eSRobert Watson int 183595fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 183695fab37eSRobert Watson struct componentname *cnp) 183795fab37eSRobert Watson { 183895fab37eSRobert Watson int error; 183995fab37eSRobert Watson 184095fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 184195fab37eSRobert Watson 184295fab37eSRobert Watson if (!mac_enforce_fs) 184395fab37eSRobert Watson return (0); 184495fab37eSRobert Watson 184595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 184695fab37eSRobert Watson if (error) 184795fab37eSRobert Watson return (error); 184895fab37eSRobert Watson 184995fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 185095fab37eSRobert Watson return (error); 185195fab37eSRobert Watson } 185295fab37eSRobert Watson 185395fab37eSRobert Watson vm_prot_t 185495fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 185595fab37eSRobert Watson { 185695fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 185795fab37eSRobert Watson 1858ca7850c3SRobert Watson if (!mac_enforce_vm) 1859ca7850c3SRobert Watson return (result); 1860ca7850c3SRobert Watson 186195fab37eSRobert Watson /* 186295fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 186395fab37eSRobert Watson */ 186495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 186595fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 186695fab37eSRobert Watson newmapping); 186795fab37eSRobert Watson return (result); 186895fab37eSRobert Watson } 186995fab37eSRobert Watson 187095fab37eSRobert Watson int 187195fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 187295fab37eSRobert Watson { 187395fab37eSRobert Watson int error; 187495fab37eSRobert Watson 187595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 187695fab37eSRobert Watson 187795fab37eSRobert Watson if (!mac_enforce_fs) 187895fab37eSRobert Watson return (0); 187995fab37eSRobert Watson 188095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 188195fab37eSRobert Watson if (error) 188295fab37eSRobert Watson return (error); 188395fab37eSRobert Watson 188495fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 188595fab37eSRobert Watson return (error); 188695fab37eSRobert Watson } 188795fab37eSRobert Watson 188895fab37eSRobert Watson int 1889177142e4SRobert Watson mac_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1890177142e4SRobert Watson struct vnode *vp) 18917f724f8bSRobert Watson { 18927f724f8bSRobert Watson int error; 18937f724f8bSRobert Watson 18947f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 18957f724f8bSRobert Watson 18967f724f8bSRobert Watson if (!mac_enforce_fs) 18977f724f8bSRobert Watson return (0); 18987f724f8bSRobert Watson 1899177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 19007f724f8bSRobert Watson if (error) 19017f724f8bSRobert Watson return (error); 19027f724f8bSRobert Watson 1903177142e4SRobert Watson MAC_CHECK(check_vnode_poll, active_cred, file_cred, vp, 1904177142e4SRobert Watson &vp->v_label); 19057f724f8bSRobert Watson 19067f724f8bSRobert Watson return (error); 19077f724f8bSRobert Watson } 19087f724f8bSRobert Watson 19097f724f8bSRobert Watson int 1910177142e4SRobert Watson mac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 1911177142e4SRobert Watson struct vnode *vp) 19127f724f8bSRobert Watson { 19137f724f8bSRobert Watson int error; 19147f724f8bSRobert Watson 19157f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 19167f724f8bSRobert Watson 19177f724f8bSRobert Watson if (!mac_enforce_fs) 19187f724f8bSRobert Watson return (0); 19197f724f8bSRobert Watson 1920177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 19217f724f8bSRobert Watson if (error) 19227f724f8bSRobert Watson return (error); 19237f724f8bSRobert Watson 1924177142e4SRobert Watson MAC_CHECK(check_vnode_read, active_cred, file_cred, vp, 1925177142e4SRobert Watson &vp->v_label); 19267f724f8bSRobert Watson 19277f724f8bSRobert Watson return (error); 19287f724f8bSRobert Watson } 19297f724f8bSRobert Watson 19307f724f8bSRobert Watson int 193195fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 193295fab37eSRobert Watson { 193395fab37eSRobert Watson int error; 193495fab37eSRobert Watson 193595fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 193695fab37eSRobert Watson 193795fab37eSRobert Watson if (!mac_enforce_fs) 193895fab37eSRobert Watson return (0); 193995fab37eSRobert Watson 194095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 194195fab37eSRobert Watson if (error) 194295fab37eSRobert Watson return (error); 194395fab37eSRobert Watson 194495fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 194595fab37eSRobert Watson return (error); 194695fab37eSRobert Watson } 194795fab37eSRobert Watson 194895fab37eSRobert Watson int 194995fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 195095fab37eSRobert Watson { 195195fab37eSRobert Watson int error; 195295fab37eSRobert Watson 195395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 195495fab37eSRobert Watson 195595fab37eSRobert Watson if (!mac_enforce_fs) 195695fab37eSRobert Watson return (0); 195795fab37eSRobert Watson 195895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 195995fab37eSRobert Watson if (error) 196095fab37eSRobert Watson return (error); 196195fab37eSRobert Watson 196295fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 196395fab37eSRobert Watson return (error); 196495fab37eSRobert Watson } 196595fab37eSRobert Watson 196695fab37eSRobert Watson static int 196795fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 196895fab37eSRobert Watson struct label *newlabel) 196995fab37eSRobert Watson { 197095fab37eSRobert Watson int error; 197195fab37eSRobert Watson 197295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 197395fab37eSRobert Watson 197495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 197595fab37eSRobert Watson if (error) 197695fab37eSRobert Watson return (error); 197795fab37eSRobert Watson 197895fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 197995fab37eSRobert Watson 198095fab37eSRobert Watson return (error); 198195fab37eSRobert Watson } 198295fab37eSRobert Watson 198395fab37eSRobert Watson int 198495fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 198595fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 198695fab37eSRobert Watson { 198795fab37eSRobert Watson int error; 198895fab37eSRobert Watson 198995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 199095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 199195fab37eSRobert Watson 199295fab37eSRobert Watson if (!mac_enforce_fs) 199395fab37eSRobert Watson return (0); 199495fab37eSRobert Watson 199595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 199695fab37eSRobert Watson if (error) 199795fab37eSRobert Watson return (error); 199895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 199995fab37eSRobert Watson if (error) 200095fab37eSRobert Watson return (error); 200195fab37eSRobert Watson 200295fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 200395fab37eSRobert Watson &vp->v_label, cnp); 200495fab37eSRobert Watson return (error); 200595fab37eSRobert Watson } 200695fab37eSRobert Watson 200795fab37eSRobert Watson int 200895fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 200995fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 201095fab37eSRobert Watson { 201195fab37eSRobert Watson int error; 201295fab37eSRobert Watson 201395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 201495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 201595fab37eSRobert Watson 201695fab37eSRobert Watson if (!mac_enforce_fs) 201795fab37eSRobert Watson return (0); 201895fab37eSRobert Watson 201995fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 202095fab37eSRobert Watson if (error) 202195fab37eSRobert Watson return (error); 202295fab37eSRobert Watson if (vp != NULL) { 202395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 202495fab37eSRobert Watson if (error) 202595fab37eSRobert Watson return (error); 202695fab37eSRobert Watson } 202795fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 202895fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 202995fab37eSRobert Watson return (error); 203095fab37eSRobert Watson } 203195fab37eSRobert Watson 203295fab37eSRobert Watson int 203395fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 203495fab37eSRobert Watson { 203595fab37eSRobert Watson int error; 203695fab37eSRobert Watson 203795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 203895fab37eSRobert Watson 203995fab37eSRobert Watson if (!mac_enforce_fs) 204095fab37eSRobert Watson return (0); 204195fab37eSRobert Watson 204295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 204395fab37eSRobert Watson if (error) 204495fab37eSRobert Watson return (error); 204595fab37eSRobert Watson 204695fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 204795fab37eSRobert Watson return (error); 204895fab37eSRobert Watson } 204995fab37eSRobert Watson 205095fab37eSRobert Watson int 205195fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 205295fab37eSRobert Watson struct acl *acl) 205395fab37eSRobert Watson { 205495fab37eSRobert Watson int error; 205595fab37eSRobert Watson 205695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 205795fab37eSRobert Watson 205895fab37eSRobert Watson if (!mac_enforce_fs) 205995fab37eSRobert Watson return (0); 206095fab37eSRobert Watson 206195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 206295fab37eSRobert Watson if (error) 206395fab37eSRobert Watson return (error); 206495fab37eSRobert Watson 206595fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 206695fab37eSRobert Watson return (error); 206795fab37eSRobert Watson } 206895fab37eSRobert Watson 206995fab37eSRobert Watson int 207095fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 207195fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 207295fab37eSRobert Watson { 207395fab37eSRobert Watson int error; 207495fab37eSRobert Watson 207595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 207695fab37eSRobert Watson 207795fab37eSRobert Watson if (!mac_enforce_fs) 207895fab37eSRobert Watson return (0); 207995fab37eSRobert Watson 208095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 208195fab37eSRobert Watson if (error) 208295fab37eSRobert Watson return (error); 208395fab37eSRobert Watson 208495fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 208595fab37eSRobert Watson attrnamespace, name, uio); 208695fab37eSRobert Watson return (error); 208795fab37eSRobert Watson } 208895fab37eSRobert Watson 208995fab37eSRobert Watson int 209095fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 209195fab37eSRobert Watson { 209295fab37eSRobert Watson int error; 209395fab37eSRobert Watson 209495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 209595fab37eSRobert Watson 209695fab37eSRobert Watson if (!mac_enforce_fs) 209795fab37eSRobert Watson return (0); 209895fab37eSRobert Watson 209995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 210095fab37eSRobert Watson if (error) 210195fab37eSRobert Watson return (error); 210295fab37eSRobert Watson 210395fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 210495fab37eSRobert Watson return (error); 210595fab37eSRobert Watson } 210695fab37eSRobert Watson 210795fab37eSRobert Watson int 210895fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 210995fab37eSRobert Watson { 211095fab37eSRobert Watson int error; 211195fab37eSRobert Watson 211295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 211395fab37eSRobert Watson 211495fab37eSRobert Watson if (!mac_enforce_fs) 211595fab37eSRobert Watson return (0); 211695fab37eSRobert Watson 211795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 211895fab37eSRobert Watson if (error) 211995fab37eSRobert Watson return (error); 212095fab37eSRobert Watson 212195fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 212295fab37eSRobert Watson return (error); 212395fab37eSRobert Watson } 212495fab37eSRobert Watson 212595fab37eSRobert Watson int 212695fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 212795fab37eSRobert Watson gid_t gid) 212895fab37eSRobert Watson { 212995fab37eSRobert Watson int error; 213095fab37eSRobert Watson 213195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 213295fab37eSRobert Watson 213395fab37eSRobert Watson if (!mac_enforce_fs) 213495fab37eSRobert Watson return (0); 213595fab37eSRobert Watson 213695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 213795fab37eSRobert Watson if (error) 213895fab37eSRobert Watson return (error); 213995fab37eSRobert Watson 214095fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 214195fab37eSRobert Watson return (error); 214295fab37eSRobert Watson } 214395fab37eSRobert Watson 214495fab37eSRobert Watson int 214595fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 214695fab37eSRobert Watson struct timespec atime, struct timespec mtime) 214795fab37eSRobert Watson { 214895fab37eSRobert Watson int error; 214995fab37eSRobert Watson 215095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 215195fab37eSRobert Watson 215295fab37eSRobert Watson if (!mac_enforce_fs) 215395fab37eSRobert Watson return (0); 215495fab37eSRobert Watson 215595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 215695fab37eSRobert Watson if (error) 215795fab37eSRobert Watson return (error); 215895fab37eSRobert Watson 215995fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 216095fab37eSRobert Watson mtime); 216195fab37eSRobert Watson return (error); 216295fab37eSRobert Watson } 216395fab37eSRobert Watson 216495fab37eSRobert Watson int 2165177142e4SRobert Watson mac_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 2166177142e4SRobert Watson struct vnode *vp) 216795fab37eSRobert Watson { 216895fab37eSRobert Watson int error; 216995fab37eSRobert Watson 217095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 217195fab37eSRobert Watson 217295fab37eSRobert Watson if (!mac_enforce_fs) 217395fab37eSRobert Watson return (0); 217495fab37eSRobert Watson 2175177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 217695fab37eSRobert Watson if (error) 217795fab37eSRobert Watson return (error); 217895fab37eSRobert Watson 2179177142e4SRobert Watson MAC_CHECK(check_vnode_stat, active_cred, file_cred, vp, 2180177142e4SRobert Watson &vp->v_label); 218195fab37eSRobert Watson return (error); 218295fab37eSRobert Watson } 218395fab37eSRobert Watson 21847f724f8bSRobert Watson int 2185177142e4SRobert Watson mac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred, 2186177142e4SRobert Watson struct vnode *vp) 21877f724f8bSRobert Watson { 21887f724f8bSRobert Watson int error; 21897f724f8bSRobert Watson 21907f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 21917f724f8bSRobert Watson 21927f724f8bSRobert Watson if (!mac_enforce_fs) 21937f724f8bSRobert Watson return (0); 21947f724f8bSRobert Watson 2195177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 21967f724f8bSRobert Watson if (error) 21977f724f8bSRobert Watson return (error); 21987f724f8bSRobert Watson 2199177142e4SRobert Watson MAC_CHECK(check_vnode_write, active_cred, file_cred, vp, 2200177142e4SRobert Watson &vp->v_label); 22017f724f8bSRobert Watson 22027f724f8bSRobert Watson return (error); 22037f724f8bSRobert Watson } 22047f724f8bSRobert Watson 220595fab37eSRobert Watson /* 220695fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 220795fab37eSRobert Watson * permission allowed for each object type we know about in its 220895fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 220995fab37eSRobert Watson * know) when necessary. The process lock is not held here. 221095fab37eSRobert Watson */ 221195fab37eSRobert Watson static void 221295fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 221395fab37eSRobert Watson { 221495fab37eSRobert Watson 221595fab37eSRobert Watson /* XXX freeze all other threads */ 221695fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 221795fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 221895fab37eSRobert Watson /* XXX allow other threads to continue */ 221995fab37eSRobert Watson } 222095fab37eSRobert Watson 222195fab37eSRobert Watson static __inline const char * 222295fab37eSRobert Watson prot2str(vm_prot_t prot) 222395fab37eSRobert Watson { 222495fab37eSRobert Watson 222595fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 222695fab37eSRobert Watson case VM_PROT_READ: 222795fab37eSRobert Watson return ("r--"); 222895fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 222995fab37eSRobert Watson return ("rw-"); 223095fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 223195fab37eSRobert Watson return ("r-x"); 223295fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 223395fab37eSRobert Watson return ("rwx"); 223495fab37eSRobert Watson case VM_PROT_WRITE: 223595fab37eSRobert Watson return ("-w-"); 223695fab37eSRobert Watson case VM_PROT_EXECUTE: 223795fab37eSRobert Watson return ("--x"); 223895fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 223995fab37eSRobert Watson return ("-wx"); 224095fab37eSRobert Watson default: 224195fab37eSRobert Watson return ("---"); 224295fab37eSRobert Watson } 224395fab37eSRobert Watson } 224495fab37eSRobert Watson 224595fab37eSRobert Watson static void 224695fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 224795fab37eSRobert Watson struct vm_map *map) 224895fab37eSRobert Watson { 224995fab37eSRobert Watson struct vm_map_entry *vme; 225095fab37eSRobert Watson vm_prot_t result, revokeperms; 225195fab37eSRobert Watson vm_object_t object; 225295fab37eSRobert Watson vm_ooffset_t offset; 225395fab37eSRobert Watson struct vnode *vp; 225495fab37eSRobert Watson 2255c0f39905SRobert Watson if (!mac_mmap_revocation) 2256c0f39905SRobert Watson return; 2257c0f39905SRobert Watson 225895fab37eSRobert Watson vm_map_lock_read(map); 225995fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 226095fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 226195fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 226295fab37eSRobert Watson vme->object.sub_map); 226395fab37eSRobert Watson continue; 226495fab37eSRobert Watson } 226595fab37eSRobert Watson /* 226695fab37eSRobert Watson * Skip over entries that obviously are not shared. 226795fab37eSRobert Watson */ 226895fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 226995fab37eSRobert Watson !vme->max_protection) 227095fab37eSRobert Watson continue; 227195fab37eSRobert Watson /* 227295fab37eSRobert Watson * Drill down to the deepest backing object. 227395fab37eSRobert Watson */ 227495fab37eSRobert Watson offset = vme->offset; 227595fab37eSRobert Watson object = vme->object.vm_object; 227695fab37eSRobert Watson if (object == NULL) 227795fab37eSRobert Watson continue; 227895fab37eSRobert Watson while (object->backing_object != NULL) { 227995fab37eSRobert Watson object = object->backing_object; 228095fab37eSRobert Watson offset += object->backing_object_offset; 228195fab37eSRobert Watson } 228295fab37eSRobert Watson /* 228395fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 228495fab37eSRobert Watson * by the MAC system, so only things with backing by a 228595fab37eSRobert Watson * normal object (read: vnodes) are checked. 228695fab37eSRobert Watson */ 228795fab37eSRobert Watson if (object->type != OBJT_VNODE) 228895fab37eSRobert Watson continue; 228995fab37eSRobert Watson vp = (struct vnode *)object->handle; 229095fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 229195fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 229295fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 229395fab37eSRobert Watson /* 229495fab37eSRobert Watson * Find out what maximum protection we may be allowing 229595fab37eSRobert Watson * now but a policy needs to get removed. 229695fab37eSRobert Watson */ 229795fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 229895fab37eSRobert Watson if (!revokeperms) 229995fab37eSRobert Watson continue; 2300b656366bSBruce Evans printf("pid %ld: revoking %s perms from %#lx:%ld " 2301b656366bSBruce Evans "(max %s/cur %s)\n", (long)td->td_proc->p_pid, 2302b656366bSBruce Evans prot2str(revokeperms), (u_long)vme->start, 2303b656366bSBruce Evans (long)(vme->end - vme->start), 230495fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 230595fab37eSRobert Watson vm_map_lock_upgrade(map); 230695fab37eSRobert Watson /* 230795fab37eSRobert Watson * This is the really simple case: if a map has more 230895fab37eSRobert Watson * max_protection than is allowed, but it's not being 230995fab37eSRobert Watson * actually used (that is, the current protection is 231095fab37eSRobert Watson * still allowed), we can just wipe it out and do 231195fab37eSRobert Watson * nothing more. 231295fab37eSRobert Watson */ 231395fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 231495fab37eSRobert Watson vme->max_protection -= revokeperms; 231595fab37eSRobert Watson } else { 231695fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 231795fab37eSRobert Watson /* 231895fab37eSRobert Watson * In the more complicated case, flush out all 231995fab37eSRobert Watson * pending changes to the object then turn it 232095fab37eSRobert Watson * copy-on-write. 232195fab37eSRobert Watson */ 232295fab37eSRobert Watson vm_object_reference(object); 232395fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 232495fab37eSRobert Watson vm_object_page_clean(object, 232595fab37eSRobert Watson OFF_TO_IDX(offset), 232695fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 232795fab37eSRobert Watson PAGE_MASK), 232895fab37eSRobert Watson OBJPC_SYNC); 232995fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 233095fab37eSRobert Watson vm_object_deallocate(object); 233195fab37eSRobert Watson /* 233295fab37eSRobert Watson * Why bother if there's no read permissions 233395fab37eSRobert Watson * anymore? For the rest, we need to leave 233495fab37eSRobert Watson * the write permissions on for COW, or 233595fab37eSRobert Watson * remove them entirely if configured to. 233695fab37eSRobert Watson */ 233795fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 233895fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 233995fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 234095fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 234195fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 234295fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 234395fab37eSRobert Watson } 234495fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 234595fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 234695fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 234795fab37eSRobert Watson } 234895fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 234995fab37eSRobert Watson vme->max_protection = 0; 235095fab37eSRobert Watson vme->protection = 0; 235195fab37eSRobert Watson } 235295fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 235395fab37eSRobert Watson vme->protection & ~revokeperms); 235495fab37eSRobert Watson vm_map_simplify_entry(map, vme); 235595fab37eSRobert Watson } 235695fab37eSRobert Watson vm_map_lock_downgrade(map); 235795fab37eSRobert Watson } 235895fab37eSRobert Watson vm_map_unlock_read(map); 235995fab37eSRobert Watson } 236095fab37eSRobert Watson 236195fab37eSRobert Watson /* 236295fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 236395fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 236495fab37eSRobert Watson * buffer cache. 236595fab37eSRobert Watson */ 236695fab37eSRobert Watson static void 236795fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 236895fab37eSRobert Watson { 236995fab37eSRobert Watson 237095fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 237195fab37eSRobert Watson } 237295fab37eSRobert Watson 237395fab37eSRobert Watson void 237495fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 237595fab37eSRobert Watson { 237695fab37eSRobert Watson 237795fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 237895fab37eSRobert Watson } 237995fab37eSRobert Watson 238095fab37eSRobert Watson void 238195fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 238295fab37eSRobert Watson { 238395fab37eSRobert Watson 238495fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 238595fab37eSRobert Watson } 238695fab37eSRobert Watson 238795fab37eSRobert Watson void 238895fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 238995fab37eSRobert Watson { 239095fab37eSRobert Watson 239195fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 239295fab37eSRobert Watson } 239395fab37eSRobert Watson 239495fab37eSRobert Watson void 239595fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 239695fab37eSRobert Watson { 239795fab37eSRobert Watson 239895fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 239995fab37eSRobert Watson } 240095fab37eSRobert Watson 240195fab37eSRobert Watson void 240295fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 240395fab37eSRobert Watson { 240495fab37eSRobert Watson 240595fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 240695fab37eSRobert Watson } 240795fab37eSRobert Watson 240895fab37eSRobert Watson void 240995fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 241095fab37eSRobert Watson struct socket *newsocket) 241195fab37eSRobert Watson { 241295fab37eSRobert Watson 241395fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 241495fab37eSRobert Watson newsocket, &newsocket->so_label); 241595fab37eSRobert Watson } 241695fab37eSRobert Watson 241795fab37eSRobert Watson static void 241895fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 241995fab37eSRobert Watson struct label *newlabel) 242095fab37eSRobert Watson { 242195fab37eSRobert Watson 242295fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 242395fab37eSRobert Watson } 242495fab37eSRobert Watson 242595fab37eSRobert Watson static void 242695fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 242795fab37eSRobert Watson { 242895fab37eSRobert Watson 242995fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 243095fab37eSRobert Watson } 243195fab37eSRobert Watson 243295fab37eSRobert Watson void 243395fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 243495fab37eSRobert Watson { 243595fab37eSRobert Watson 243695fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 243795fab37eSRobert Watson socket, &socket->so_peerlabel); 243895fab37eSRobert Watson } 243995fab37eSRobert Watson 244095fab37eSRobert Watson void 244195fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 244295fab37eSRobert Watson struct socket *newsocket) 244395fab37eSRobert Watson { 244495fab37eSRobert Watson 244595fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 244695fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 244795fab37eSRobert Watson } 244895fab37eSRobert Watson 244995fab37eSRobert Watson void 245095fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 245195fab37eSRobert Watson { 245295fab37eSRobert Watson 245395fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 245495fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 245595fab37eSRobert Watson } 245695fab37eSRobert Watson 245795fab37eSRobert Watson void 245895fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 245995fab37eSRobert Watson { 246095fab37eSRobert Watson 246195fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 246295fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 246395fab37eSRobert Watson } 246495fab37eSRobert Watson 246595fab37eSRobert Watson void 246695fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 246795fab37eSRobert Watson { 246895fab37eSRobert Watson 246995fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 247095fab37eSRobert Watson &ipq->ipq_label); 247195fab37eSRobert Watson } 247295fab37eSRobert Watson 247395fab37eSRobert Watson void 247495fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 247595fab37eSRobert Watson { 247695fab37eSRobert Watson 247795fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 247895fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 247995fab37eSRobert Watson } 248095fab37eSRobert Watson 248195fab37eSRobert Watson void 248295fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 248395fab37eSRobert Watson { 248495fab37eSRobert Watson 248595fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 248695fab37eSRobert Watson &mbuf->m_pkthdr.label); 248795fab37eSRobert Watson } 248895fab37eSRobert Watson 248995fab37eSRobert Watson void 249095fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 249195fab37eSRobert Watson { 249295fab37eSRobert Watson 249395fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 249495fab37eSRobert Watson &mbuf->m_pkthdr.label); 249595fab37eSRobert Watson } 249695fab37eSRobert Watson 249795fab37eSRobert Watson void 249895fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 249995fab37eSRobert Watson { 250095fab37eSRobert Watson 250195fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 250295fab37eSRobert Watson &mbuf->m_pkthdr.label); 250395fab37eSRobert Watson } 250495fab37eSRobert Watson 250595fab37eSRobert Watson void 250695fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 250795fab37eSRobert Watson struct mbuf *newmbuf) 250895fab37eSRobert Watson { 250995fab37eSRobert Watson 251095fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 251195fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 251295fab37eSRobert Watson &newmbuf->m_pkthdr.label); 251395fab37eSRobert Watson } 251495fab37eSRobert Watson 251595fab37eSRobert Watson void 251695fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 251795fab37eSRobert Watson { 251895fab37eSRobert Watson 251995fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 252095fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 252195fab37eSRobert Watson } 252295fab37eSRobert Watson 252395fab37eSRobert Watson int 252495fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 252595fab37eSRobert Watson { 252695fab37eSRobert Watson int result; 252795fab37eSRobert Watson 252895fab37eSRobert Watson result = 1; 252995fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 253095fab37eSRobert Watson ipq, &ipq->ipq_label); 253195fab37eSRobert Watson 253295fab37eSRobert Watson return (result); 253395fab37eSRobert Watson } 253495fab37eSRobert Watson 253595fab37eSRobert Watson void 253695fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 253795fab37eSRobert Watson { 253895fab37eSRobert Watson 253995fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 254095fab37eSRobert Watson &ipq->ipq_label); 254195fab37eSRobert Watson } 254295fab37eSRobert Watson 254395fab37eSRobert Watson void 254495fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 254595fab37eSRobert Watson { 254695fab37eSRobert Watson 254795fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 254895fab37eSRobert Watson &mbuf->m_pkthdr.label); 254995fab37eSRobert Watson } 255095fab37eSRobert Watson 255195fab37eSRobert Watson void 255295fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 255395fab37eSRobert Watson { 255495fab37eSRobert Watson 255595fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 255695fab37eSRobert Watson &mp->mnt_fslabel); 255795fab37eSRobert Watson } 255895fab37eSRobert Watson 255995fab37eSRobert Watson void 256095fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 256195fab37eSRobert Watson { 256295fab37eSRobert Watson 256395fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 256495fab37eSRobert Watson &mp->mnt_fslabel); 256595fab37eSRobert Watson } 256695fab37eSRobert Watson 256795fab37eSRobert Watson int 256895fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 256995fab37eSRobert Watson { 257095fab37eSRobert Watson int error; 257195fab37eSRobert Watson 257295fab37eSRobert Watson if (!mac_enforce_network) 257395fab37eSRobert Watson return (0); 257495fab37eSRobert Watson 257595fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 257695fab37eSRobert Watson &ifnet->if_label); 257795fab37eSRobert Watson 257895fab37eSRobert Watson return (error); 257995fab37eSRobert Watson } 258095fab37eSRobert Watson 258195fab37eSRobert Watson static int 258295fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 258395fab37eSRobert Watson { 258495fab37eSRobert Watson int error; 258595fab37eSRobert Watson 258695fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 258795fab37eSRobert Watson 258895fab37eSRobert Watson return (error); 258995fab37eSRobert Watson } 259095fab37eSRobert Watson 259195fab37eSRobert Watson int 259295fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 259395fab37eSRobert Watson { 259495fab37eSRobert Watson int error; 259595fab37eSRobert Watson 259695fab37eSRobert Watson if (!mac_enforce_process) 259795fab37eSRobert Watson return (0); 259895fab37eSRobert Watson 259995fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 260095fab37eSRobert Watson 260195fab37eSRobert Watson return (error); 260295fab37eSRobert Watson } 260395fab37eSRobert Watson 260495fab37eSRobert Watson int 260595fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 260695fab37eSRobert Watson { 260795fab37eSRobert Watson int error; 260895fab37eSRobert Watson 260995fab37eSRobert Watson if (!mac_enforce_network) 261095fab37eSRobert Watson return (0); 261195fab37eSRobert Watson 261295fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 261395fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 261495fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 261595fab37eSRobert Watson ifnet->if_unit); 261695fab37eSRobert Watson 261795fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 261895fab37eSRobert Watson &mbuf->m_pkthdr.label); 261995fab37eSRobert Watson 262095fab37eSRobert Watson return (error); 262195fab37eSRobert Watson } 262295fab37eSRobert Watson 262395fab37eSRobert Watson int 262495fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 262595fab37eSRobert Watson { 262695fab37eSRobert Watson int error; 262795fab37eSRobert Watson 262895fab37eSRobert Watson if (!mac_enforce_fs) 262995fab37eSRobert Watson return (0); 263095fab37eSRobert Watson 263195fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 263295fab37eSRobert Watson 263395fab37eSRobert Watson return (error); 263495fab37eSRobert Watson } 263595fab37eSRobert Watson 263695fab37eSRobert Watson int 263795fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 263895fab37eSRobert Watson void *data) 263995fab37eSRobert Watson { 264095fab37eSRobert Watson int error; 264195fab37eSRobert Watson 26421aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26431aa37f53SRobert Watson 26441aa37f53SRobert Watson if (!mac_enforce_pipe) 26451aa37f53SRobert Watson return (0); 26461aa37f53SRobert Watson 264795fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 264895fab37eSRobert Watson 264995fab37eSRobert Watson return (error); 265095fab37eSRobert Watson } 265195fab37eSRobert Watson 265295fab37eSRobert Watson int 2653c024c3eeSRobert Watson mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe) 265495fab37eSRobert Watson { 265595fab37eSRobert Watson int error; 265695fab37eSRobert Watson 26571aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26581aa37f53SRobert Watson 26591aa37f53SRobert Watson if (!mac_enforce_pipe) 26601aa37f53SRobert Watson return (0); 26611aa37f53SRobert Watson 2662c024c3eeSRobert Watson MAC_CHECK(check_pipe_poll, cred, pipe, pipe->pipe_label); 2663c024c3eeSRobert Watson 2664c024c3eeSRobert Watson return (error); 2665c024c3eeSRobert Watson } 2666c024c3eeSRobert Watson 2667c024c3eeSRobert Watson int 2668c024c3eeSRobert Watson mac_check_pipe_read(struct ucred *cred, struct pipe *pipe) 2669c024c3eeSRobert Watson { 2670c024c3eeSRobert Watson int error; 2671c024c3eeSRobert Watson 26721aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26731aa37f53SRobert Watson 26741aa37f53SRobert Watson if (!mac_enforce_pipe) 26751aa37f53SRobert Watson return (0); 26761aa37f53SRobert Watson 2677c024c3eeSRobert Watson MAC_CHECK(check_pipe_read, cred, pipe, pipe->pipe_label); 267895fab37eSRobert Watson 267995fab37eSRobert Watson return (error); 268095fab37eSRobert Watson } 268195fab37eSRobert Watson 268295fab37eSRobert Watson static int 268395fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 268495fab37eSRobert Watson struct label *newlabel) 268595fab37eSRobert Watson { 268695fab37eSRobert Watson int error; 268795fab37eSRobert Watson 26881aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26891aa37f53SRobert Watson 26901aa37f53SRobert Watson if (!mac_enforce_pipe) 26911aa37f53SRobert Watson return (0); 26921aa37f53SRobert Watson 269395fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 269495fab37eSRobert Watson 269595fab37eSRobert Watson return (error); 269695fab37eSRobert Watson } 269795fab37eSRobert Watson 269895fab37eSRobert Watson int 2699c024c3eeSRobert Watson mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe) 2700c024c3eeSRobert Watson { 2701c024c3eeSRobert Watson int error; 2702c024c3eeSRobert Watson 27031aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27041aa37f53SRobert Watson 27051aa37f53SRobert Watson if (!mac_enforce_pipe) 27061aa37f53SRobert Watson return (0); 27071aa37f53SRobert Watson 2708c024c3eeSRobert Watson MAC_CHECK(check_pipe_stat, cred, pipe, pipe->pipe_label); 2709c024c3eeSRobert Watson 2710c024c3eeSRobert Watson return (error); 2711c024c3eeSRobert Watson } 2712c024c3eeSRobert Watson 2713c024c3eeSRobert Watson int 2714c024c3eeSRobert Watson mac_check_pipe_write(struct ucred *cred, struct pipe *pipe) 2715c024c3eeSRobert Watson { 2716c024c3eeSRobert Watson int error; 2717c024c3eeSRobert Watson 27181aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27191aa37f53SRobert Watson 27201aa37f53SRobert Watson if (!mac_enforce_pipe) 27211aa37f53SRobert Watson return (0); 27221aa37f53SRobert Watson 2723c024c3eeSRobert Watson MAC_CHECK(check_pipe_write, cred, pipe, pipe->pipe_label); 2724c024c3eeSRobert Watson 2725c024c3eeSRobert Watson return (error); 2726c024c3eeSRobert Watson } 2727c024c3eeSRobert Watson 2728c024c3eeSRobert Watson int 272995fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 273095fab37eSRobert Watson { 273195fab37eSRobert Watson int error; 273295fab37eSRobert Watson 2733b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2734b12baf55SRobert Watson 273595fab37eSRobert Watson if (!mac_enforce_process) 273695fab37eSRobert Watson return (0); 273795fab37eSRobert Watson 273895fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 273995fab37eSRobert Watson 274095fab37eSRobert Watson return (error); 274195fab37eSRobert Watson } 274295fab37eSRobert Watson 274395fab37eSRobert Watson int 274495fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 274595fab37eSRobert Watson { 274695fab37eSRobert Watson int error; 274795fab37eSRobert Watson 2748b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2749b12baf55SRobert Watson 275095fab37eSRobert Watson if (!mac_enforce_process) 275195fab37eSRobert Watson return (0); 275295fab37eSRobert Watson 275395fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 275495fab37eSRobert Watson 275595fab37eSRobert Watson return (error); 275695fab37eSRobert Watson } 275795fab37eSRobert Watson 275895fab37eSRobert Watson int 275995fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 276095fab37eSRobert Watson { 276195fab37eSRobert Watson int error; 276295fab37eSRobert Watson 2763b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2764b12baf55SRobert Watson 276595fab37eSRobert Watson if (!mac_enforce_process) 276695fab37eSRobert Watson return (0); 276795fab37eSRobert Watson 276895fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 276995fab37eSRobert Watson 277095fab37eSRobert Watson return (error); 277195fab37eSRobert Watson } 277295fab37eSRobert Watson 277395fab37eSRobert Watson int 277495fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 277595fab37eSRobert Watson struct sockaddr *sockaddr) 277695fab37eSRobert Watson { 277795fab37eSRobert Watson int error; 277895fab37eSRobert Watson 277995fab37eSRobert Watson if (!mac_enforce_socket) 278095fab37eSRobert Watson return (0); 278195fab37eSRobert Watson 278295fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 278395fab37eSRobert Watson sockaddr); 278495fab37eSRobert Watson 278595fab37eSRobert Watson return (error); 278695fab37eSRobert Watson } 278795fab37eSRobert Watson 278895fab37eSRobert Watson int 278995fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 279095fab37eSRobert Watson struct sockaddr *sockaddr) 279195fab37eSRobert Watson { 279295fab37eSRobert Watson int error; 279395fab37eSRobert Watson 279495fab37eSRobert Watson if (!mac_enforce_socket) 279595fab37eSRobert Watson return (0); 279695fab37eSRobert Watson 279795fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 279895fab37eSRobert Watson sockaddr); 279995fab37eSRobert Watson 280095fab37eSRobert Watson return (error); 280195fab37eSRobert Watson } 280295fab37eSRobert Watson 280395fab37eSRobert Watson int 2804d61198e4SRobert Watson mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2805d61198e4SRobert Watson { 2806d61198e4SRobert Watson int error; 2807d61198e4SRobert Watson 2808d61198e4SRobert Watson if (!mac_enforce_socket) 2809d61198e4SRobert Watson return (0); 2810d61198e4SRobert Watson 2811d61198e4SRobert Watson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2812d61198e4SRobert Watson &mbuf->m_pkthdr.label); 2813d61198e4SRobert Watson 2814d61198e4SRobert Watson return (error); 2815d61198e4SRobert Watson } 2816d61198e4SRobert Watson 2817d61198e4SRobert Watson int 281895fab37eSRobert Watson mac_check_socket_listen(struct ucred *cred, struct socket *socket) 281995fab37eSRobert Watson { 282095fab37eSRobert Watson int error; 282195fab37eSRobert Watson 282295fab37eSRobert Watson if (!mac_enforce_socket) 282395fab37eSRobert Watson return (0); 282495fab37eSRobert Watson 282595fab37eSRobert Watson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 282695fab37eSRobert Watson return (error); 282795fab37eSRobert Watson } 282895fab37eSRobert Watson 282995fab37eSRobert Watson static int 283095fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 283195fab37eSRobert Watson struct label *newlabel) 283295fab37eSRobert Watson { 283395fab37eSRobert Watson int error; 283495fab37eSRobert Watson 283595fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 283695fab37eSRobert Watson newlabel); 283795fab37eSRobert Watson 283895fab37eSRobert Watson return (error); 283995fab37eSRobert Watson } 284095fab37eSRobert Watson 284195fab37eSRobert Watson int 284295fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 284395fab37eSRobert Watson { 284495fab37eSRobert Watson int error; 284595fab37eSRobert Watson 284695fab37eSRobert Watson if (!mac_enforce_socket) 284795fab37eSRobert Watson return (0); 284895fab37eSRobert Watson 284995fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 285095fab37eSRobert Watson 285195fab37eSRobert Watson return (error); 285295fab37eSRobert Watson } 285395fab37eSRobert Watson 285495fab37eSRobert Watson int 285595fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 285695fab37eSRobert Watson struct ifnet *ifnet) 285795fab37eSRobert Watson { 285895fab37eSRobert Watson struct mac label; 285995fab37eSRobert Watson int error; 286095fab37eSRobert Watson 286195fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 286295fab37eSRobert Watson if (error) 286395fab37eSRobert Watson return (error); 286495fab37eSRobert Watson 286595fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 286695fab37eSRobert Watson } 286795fab37eSRobert Watson 286895fab37eSRobert Watson int 286995fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 287095fab37eSRobert Watson struct ifnet *ifnet) 287195fab37eSRobert Watson { 287295fab37eSRobert Watson struct mac newlabel; 287395fab37eSRobert Watson struct label intlabel; 287495fab37eSRobert Watson int error; 287595fab37eSRobert Watson 287695fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 287795fab37eSRobert Watson if (error) 287895fab37eSRobert Watson return (error); 287995fab37eSRobert Watson 288095fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 288195fab37eSRobert Watson if (error) 288295fab37eSRobert Watson return (error); 288395fab37eSRobert Watson 288495fab37eSRobert Watson /* 288595fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 288695fab37eSRobert Watson * policies impose this check themselves if required by the 288795fab37eSRobert Watson * policy. Eventually, this should go away. 288895fab37eSRobert Watson */ 288995fab37eSRobert Watson error = suser_cred(cred, 0); 289095fab37eSRobert Watson if (error) 289195fab37eSRobert Watson goto out; 289295fab37eSRobert Watson 289395fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 289495fab37eSRobert Watson &intlabel); 289595fab37eSRobert Watson if (error) 289695fab37eSRobert Watson goto out; 289795fab37eSRobert Watson 289895fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 289995fab37eSRobert Watson 290095fab37eSRobert Watson out: 290195fab37eSRobert Watson mac_destroy_temp(&intlabel); 290295fab37eSRobert Watson return (error); 290395fab37eSRobert Watson } 290495fab37eSRobert Watson 290595fab37eSRobert Watson void 290695fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 290795fab37eSRobert Watson { 290895fab37eSRobert Watson 290995fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 291095fab37eSRobert Watson } 291195fab37eSRobert Watson 291295fab37eSRobert Watson void 291395fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 291495fab37eSRobert Watson { 291595fab37eSRobert Watson 291695fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 291795fab37eSRobert Watson } 291895fab37eSRobert Watson 291995fab37eSRobert Watson static int 292095fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 292195fab37eSRobert Watson { 292295fab37eSRobert Watson int error; 292395fab37eSRobert Watson 292495fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 292595fab37eSRobert Watson 292695fab37eSRobert Watson return (error); 292795fab37eSRobert Watson } 292895fab37eSRobert Watson 292995fab37eSRobert Watson void 293095fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 293195fab37eSRobert Watson struct devfs_dirent *de) 293295fab37eSRobert Watson { 293395fab37eSRobert Watson 293495fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 293595fab37eSRobert Watson &de->de_label); 293695fab37eSRobert Watson } 293795fab37eSRobert Watson 293895fab37eSRobert Watson /* 293995fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 294095fab37eSRobert Watson */ 294195fab37eSRobert Watson void 294295fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 294395fab37eSRobert Watson struct vnode *child) 294495fab37eSRobert Watson { 294595fab37eSRobert Watson int error; 294695fab37eSRobert Watson 294795fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 294895fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 294995fab37eSRobert Watson 295095fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 295195fab37eSRobert Watson if (error) { 295295fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 295395fab37eSRobert Watson error); 295495fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 295595fab37eSRobert Watson } 295695fab37eSRobert Watson 295795fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 295895fab37eSRobert Watson &child->v_label); 295995fab37eSRobert Watson } 296095fab37eSRobert Watson 296195fab37eSRobert Watson int 296295fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 296395fab37eSRobert Watson struct mac *extmac) 296495fab37eSRobert Watson { 296595fab37eSRobert Watson struct label intlabel; 296695fab37eSRobert Watson int error; 296795fab37eSRobert Watson 296895fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 296995fab37eSRobert Watson if (error) 297095fab37eSRobert Watson return (error); 297195fab37eSRobert Watson 297295fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 297395fab37eSRobert Watson if (error) { 297495fab37eSRobert Watson mac_destroy_temp(&intlabel); 297595fab37eSRobert Watson return (error); 297695fab37eSRobert Watson } 297795fab37eSRobert Watson 297895fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 297995fab37eSRobert Watson 298095fab37eSRobert Watson mac_destroy_temp(&intlabel); 298195fab37eSRobert Watson return (0); 298295fab37eSRobert Watson } 298395fab37eSRobert Watson 298495fab37eSRobert Watson int 298595fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 298695fab37eSRobert Watson { 298795fab37eSRobert Watson int error; 298895fab37eSRobert Watson 29891aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 29901aa37f53SRobert Watson 299195fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 299295fab37eSRobert Watson if (error) 299395fab37eSRobert Watson return (error); 299495fab37eSRobert Watson 299595fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 299695fab37eSRobert Watson 299795fab37eSRobert Watson return (0); 299895fab37eSRobert Watson } 299995fab37eSRobert Watson 300095fab37eSRobert Watson int 300195fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 300295fab37eSRobert Watson struct mac *extmac) 300395fab37eSRobert Watson { 300495fab37eSRobert Watson 300595fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 300695fab37eSRobert Watson } 300795fab37eSRobert Watson 300895fab37eSRobert Watson int 300995fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 301095fab37eSRobert Watson struct mac *extmac) 301195fab37eSRobert Watson { 301295fab37eSRobert Watson 301395fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 301495fab37eSRobert Watson } 301595fab37eSRobert Watson 301695fab37eSRobert Watson /* 301795fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 301895fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 301995fab37eSRobert Watson * extended attributes. 302095fab37eSRobert Watson */ 302195fab37eSRobert Watson int 302295fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 302395fab37eSRobert Watson { 302495fab37eSRobert Watson struct vnode *vp = ap->a_vp; 302595fab37eSRobert Watson struct label *intlabel = ap->a_label; 302695fab37eSRobert Watson struct mac extmac; 302795fab37eSRobert Watson int error; 302895fab37eSRobert Watson 302995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 303095fab37eSRobert Watson 303195fab37eSRobert Watson /* 303295fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 303395fab37eSRobert Watson * Be particularly careful to avoid race conditions, 303495fab37eSRobert Watson * consistency problems, and stability problems when 303595fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 303695fab37eSRobert Watson * the ability to write multiple EAs on the same file in 303795fab37eSRobert Watson * a single transaction, which the current EA interface 303895fab37eSRobert Watson * does not provide. 303995fab37eSRobert Watson */ 304095fab37eSRobert Watson 304195fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 304295fab37eSRobert Watson if (error) 304395fab37eSRobert Watson return (error); 304495fab37eSRobert Watson 304595fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 304695fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 304795fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 304895fab37eSRobert Watson if (error) 304995fab37eSRobert Watson return (error); 305095fab37eSRobert Watson 305195fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 305295fab37eSRobert Watson 3053e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 305495fab37eSRobert Watson 305595fab37eSRobert Watson return (0); 305695fab37eSRobert Watson } 305795fab37eSRobert Watson 305895fab37eSRobert Watson static int 305995fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 306095fab37eSRobert Watson { 306195fab37eSRobert Watson int error; 306295fab37eSRobert Watson 306395fab37eSRobert Watson if (vp->v_mount == NULL) { 306495fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 306506be2aaaSNate Lawson if (vp->v_type != VNON) 306606be2aaaSNate Lawson printf("vn_setlabel: null v_mount with non-VNON\n"); 306795fab37eSRobert Watson return (EBADF); 306895fab37eSRobert Watson } 306995fab37eSRobert Watson 307095fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 307195fab37eSRobert Watson return (EOPNOTSUPP); 307295fab37eSRobert Watson 307395fab37eSRobert Watson /* 307495fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 307595fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 307695fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 307795fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 307895fab37eSRobert Watson */ 307995fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 308095fab37eSRobert Watson if (error) 308195fab37eSRobert Watson return (error); 308295fab37eSRobert Watson 308395fab37eSRobert Watson /* 308495fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 308595fab37eSRobert Watson * decisions about who is and is not able to modify labels 308695fab37eSRobert Watson * and protections on files. This might not be right. We can't 308795fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 308895fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 308995fab37eSRobert Watson */ 309095fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 309195fab37eSRobert Watson if (error) 309295fab37eSRobert Watson return (error); 309395fab37eSRobert Watson 309495fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 309595fab37eSRobert Watson if (error) 309695fab37eSRobert Watson return (error); 309795fab37eSRobert Watson 309895fab37eSRobert Watson return (0); 309995fab37eSRobert Watson } 310095fab37eSRobert Watson 310195fab37eSRobert Watson /* 310295fab37eSRobert Watson * MPSAFE 310395fab37eSRobert Watson */ 310495fab37eSRobert Watson int 310595fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 310695fab37eSRobert Watson { 310795fab37eSRobert Watson struct mac extmac; 310895fab37eSRobert Watson int error; 310995fab37eSRobert Watson 311095fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 311195fab37eSRobert Watson if (error == 0) 311295fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 311395fab37eSRobert Watson 311495fab37eSRobert Watson return (error); 311595fab37eSRobert Watson } 311695fab37eSRobert Watson 311795fab37eSRobert Watson /* 311895fab37eSRobert Watson * MPSAFE 311995fab37eSRobert Watson */ 312095fab37eSRobert Watson int 312195fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 312295fab37eSRobert Watson { 312395fab37eSRobert Watson struct ucred *newcred, *oldcred; 312495fab37eSRobert Watson struct proc *p; 312595fab37eSRobert Watson struct mac extmac; 312695fab37eSRobert Watson struct label intlabel; 312795fab37eSRobert Watson int error; 312895fab37eSRobert Watson 312995fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 313095fab37eSRobert Watson if (error) 313195fab37eSRobert Watson return (error); 313295fab37eSRobert Watson 313395fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 313495fab37eSRobert Watson if (error) 313595fab37eSRobert Watson return (error); 313695fab37eSRobert Watson 313795fab37eSRobert Watson newcred = crget(); 313895fab37eSRobert Watson 313995fab37eSRobert Watson p = td->td_proc; 314095fab37eSRobert Watson PROC_LOCK(p); 314195fab37eSRobert Watson oldcred = p->p_ucred; 314295fab37eSRobert Watson 314395fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 314495fab37eSRobert Watson if (error) { 314595fab37eSRobert Watson PROC_UNLOCK(p); 314695fab37eSRobert Watson mac_destroy_temp(&intlabel); 314795fab37eSRobert Watson crfree(newcred); 314895fab37eSRobert Watson return (error); 314995fab37eSRobert Watson } 315095fab37eSRobert Watson 315195fab37eSRobert Watson setsugid(p); 315295fab37eSRobert Watson crcopy(newcred, oldcred); 315395fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 315495fab37eSRobert Watson p->p_ucred = newcred; 3155e5cb5e37SRobert Watson 3156e5cb5e37SRobert Watson /* 3157e5cb5e37SRobert Watson * Grab additional reference for use while revoking mmaps, prior 3158e5cb5e37SRobert Watson * to releasing the proc lock and sharing the cred. 3159e5cb5e37SRobert Watson */ 3160e5cb5e37SRobert Watson crhold(newcred); 316195fab37eSRobert Watson PROC_UNLOCK(p); 3162e5cb5e37SRobert Watson 316316140035SRobert Watson mtx_lock(&Giant); 3164e5cb5e37SRobert Watson mac_cred_mmapped_drop_perms(td, newcred); 316516140035SRobert Watson mtx_unlock(&Giant); 3166e5cb5e37SRobert Watson 3167e5cb5e37SRobert Watson crfree(newcred); /* Free revocation reference. */ 316895fab37eSRobert Watson crfree(oldcred); 316995fab37eSRobert Watson mac_destroy_temp(&intlabel); 317095fab37eSRobert Watson return (0); 317195fab37eSRobert Watson } 317295fab37eSRobert Watson 317395fab37eSRobert Watson /* 317495fab37eSRobert Watson * MPSAFE 317595fab37eSRobert Watson */ 317695fab37eSRobert Watson int 317795fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 317895fab37eSRobert Watson { 317995fab37eSRobert Watson struct file *fp; 318095fab37eSRobert Watson struct mac extmac; 318195fab37eSRobert Watson struct vnode *vp; 318295fab37eSRobert Watson struct pipe *pipe; 318395fab37eSRobert Watson int error; 318495fab37eSRobert Watson 318595fab37eSRobert Watson mtx_lock(&Giant); 318695fab37eSRobert Watson 318795fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 318895fab37eSRobert Watson if (error) 318995fab37eSRobert Watson goto out; 319095fab37eSRobert Watson 319195fab37eSRobert Watson switch (fp->f_type) { 319295fab37eSRobert Watson case DTYPE_FIFO: 319395fab37eSRobert Watson case DTYPE_VNODE: 319495fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 319595fab37eSRobert Watson 319695fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 319795fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 319895fab37eSRobert Watson if (error == 0) 319995fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 320095fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 320195fab37eSRobert Watson break; 320295fab37eSRobert Watson case DTYPE_PIPE: 320395fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 320495fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 320595fab37eSRobert Watson break; 320695fab37eSRobert Watson default: 320795fab37eSRobert Watson error = EINVAL; 320895fab37eSRobert Watson } 320995fab37eSRobert Watson 321095fab37eSRobert Watson if (error == 0) 321195fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 321295fab37eSRobert Watson 321395fab37eSRobert Watson fdrop(fp, td); 321495fab37eSRobert Watson 321595fab37eSRobert Watson out: 321695fab37eSRobert Watson mtx_unlock(&Giant); 321795fab37eSRobert Watson return (error); 321895fab37eSRobert Watson } 321995fab37eSRobert Watson 322095fab37eSRobert Watson /* 322195fab37eSRobert Watson * MPSAFE 322295fab37eSRobert Watson */ 322395fab37eSRobert Watson int 322495fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 322595fab37eSRobert Watson { 322695fab37eSRobert Watson struct nameidata nd; 322795fab37eSRobert Watson struct mac extmac; 322895fab37eSRobert Watson int error; 322995fab37eSRobert Watson 323095fab37eSRobert Watson mtx_lock(&Giant); 323195fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 323295fab37eSRobert Watson SCARG(uap, path_p), td); 323395fab37eSRobert Watson error = namei(&nd); 323495fab37eSRobert Watson if (error) 323595fab37eSRobert Watson goto out; 323695fab37eSRobert Watson 323795fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 323895fab37eSRobert Watson if (error == 0) 323995fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 324095fab37eSRobert Watson NDFREE(&nd, 0); 324195fab37eSRobert Watson if (error) 324295fab37eSRobert Watson goto out; 324395fab37eSRobert Watson 324495fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 324595fab37eSRobert Watson 324695fab37eSRobert Watson out: 324795fab37eSRobert Watson mtx_unlock(&Giant); 324895fab37eSRobert Watson return (error); 324995fab37eSRobert Watson } 325095fab37eSRobert Watson 325195fab37eSRobert Watson /* 325295fab37eSRobert Watson * MPSAFE 325395fab37eSRobert Watson */ 325495fab37eSRobert Watson int 325595fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 325695fab37eSRobert Watson { 325795fab37eSRobert Watson struct file *fp; 325895fab37eSRobert Watson struct mac extmac; 325995fab37eSRobert Watson struct label intlabel; 326095fab37eSRobert Watson struct mount *mp; 326195fab37eSRobert Watson struct vnode *vp; 326295fab37eSRobert Watson struct pipe *pipe; 326395fab37eSRobert Watson int error; 326495fab37eSRobert Watson 326595fab37eSRobert Watson mtx_lock(&Giant); 326695fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 326795fab37eSRobert Watson if (error) 326895fab37eSRobert Watson goto out1; 326995fab37eSRobert Watson 327095fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 327195fab37eSRobert Watson if (error) 327295fab37eSRobert Watson goto out2; 327395fab37eSRobert Watson 327495fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 327595fab37eSRobert Watson if (error) 327695fab37eSRobert Watson goto out2; 327795fab37eSRobert Watson 327895fab37eSRobert Watson switch (fp->f_type) { 327995fab37eSRobert Watson case DTYPE_FIFO: 328095fab37eSRobert Watson case DTYPE_VNODE: 328195fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 328295fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 328395fab37eSRobert Watson if (error != 0) 328495fab37eSRobert Watson break; 328595fab37eSRobert Watson 328695fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 328795fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 328895fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 328995fab37eSRobert Watson vn_finished_write(mp); 329095fab37eSRobert Watson mac_destroy_temp(&intlabel); 329195fab37eSRobert Watson break; 329295fab37eSRobert Watson case DTYPE_PIPE: 329395fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 32941aa37f53SRobert Watson PIPE_LOCK(pipe); 329595fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 32961aa37f53SRobert Watson PIPE_UNLOCK(pipe); 329795fab37eSRobert Watson break; 329895fab37eSRobert Watson default: 329995fab37eSRobert Watson error = EINVAL; 330095fab37eSRobert Watson } 330195fab37eSRobert Watson 330295fab37eSRobert Watson out2: 330395fab37eSRobert Watson fdrop(fp, td); 330495fab37eSRobert Watson out1: 330595fab37eSRobert Watson mtx_unlock(&Giant); 330695fab37eSRobert Watson return (error); 330795fab37eSRobert Watson } 330895fab37eSRobert Watson 330995fab37eSRobert Watson /* 331095fab37eSRobert Watson * MPSAFE 331195fab37eSRobert Watson */ 331295fab37eSRobert Watson int 331395fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 331495fab37eSRobert Watson { 331595fab37eSRobert Watson struct nameidata nd; 331695fab37eSRobert Watson struct mac extmac; 331795fab37eSRobert Watson struct label intlabel; 331895fab37eSRobert Watson struct mount *mp; 331995fab37eSRobert Watson int error; 332095fab37eSRobert Watson 332195fab37eSRobert Watson mtx_lock(&Giant); 332295fab37eSRobert Watson 332395fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 332495fab37eSRobert Watson if (error) 332595fab37eSRobert Watson goto out; 332695fab37eSRobert Watson 332795fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 332895fab37eSRobert Watson if (error) 332995fab37eSRobert Watson goto out; 333095fab37eSRobert Watson 333195fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 333295fab37eSRobert Watson SCARG(uap, path_p), td); 333395fab37eSRobert Watson error = namei(&nd); 333495fab37eSRobert Watson if (error) 333595fab37eSRobert Watson goto out2; 333695fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 333795fab37eSRobert Watson if (error) 333895fab37eSRobert Watson goto out2; 333995fab37eSRobert Watson 334095fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 334195fab37eSRobert Watson 334295fab37eSRobert Watson vn_finished_write(mp); 334395fab37eSRobert Watson out2: 334495fab37eSRobert Watson mac_destroy_temp(&intlabel); 334595fab37eSRobert Watson NDFREE(&nd, 0); 334695fab37eSRobert Watson out: 334795fab37eSRobert Watson mtx_unlock(&Giant); 334895fab37eSRobert Watson return (error); 334995fab37eSRobert Watson } 335095fab37eSRobert Watson 335127f2eac7SRobert Watson int 335227f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 335327f2eac7SRobert Watson { 335427f2eac7SRobert Watson struct mac_policy_conf *mpc; 335527f2eac7SRobert Watson char target[MAC_MAX_POLICY_NAME]; 335627f2eac7SRobert Watson int error; 335727f2eac7SRobert Watson 335827f2eac7SRobert Watson error = copyinstr(SCARG(uap, policy), target, sizeof(target), NULL); 335927f2eac7SRobert Watson if (error) 336027f2eac7SRobert Watson return (error); 336127f2eac7SRobert Watson 336227f2eac7SRobert Watson error = ENOSYS; 336327f2eac7SRobert Watson MAC_POLICY_LIST_BUSY(); 336427f2eac7SRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { 336527f2eac7SRobert Watson if (strcmp(mpc->mpc_name, target) == 0 && 336627f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall != NULL) { 336727f2eac7SRobert Watson error = mpc->mpc_ops->mpo_syscall(td, 336827f2eac7SRobert Watson SCARG(uap, call), SCARG(uap, arg)); 336927f2eac7SRobert Watson goto out; 337027f2eac7SRobert Watson } 337127f2eac7SRobert Watson } 337227f2eac7SRobert Watson 337327f2eac7SRobert Watson out: 337427f2eac7SRobert Watson MAC_POLICY_LIST_UNBUSY(); 337527f2eac7SRobert Watson return (error); 337627f2eac7SRobert Watson } 337727f2eac7SRobert Watson 337895fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 337995fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 338095fab37eSRobert Watson 338195fab37eSRobert Watson #else /* !MAC */ 33827bc82500SRobert Watson 33837bc82500SRobert Watson int 33847bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 33857bc82500SRobert Watson { 33867bc82500SRobert Watson 33877bc82500SRobert Watson return (ENOSYS); 33887bc82500SRobert Watson } 33897bc82500SRobert Watson 33907bc82500SRobert Watson int 33917bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 33927bc82500SRobert Watson { 33937bc82500SRobert Watson 33947bc82500SRobert Watson return (ENOSYS); 33957bc82500SRobert Watson } 33967bc82500SRobert Watson 33977bc82500SRobert Watson int 33987bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 33997bc82500SRobert Watson { 34007bc82500SRobert Watson 34017bc82500SRobert Watson return (ENOSYS); 34027bc82500SRobert Watson } 34037bc82500SRobert Watson 34047bc82500SRobert Watson int 34057bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 34067bc82500SRobert Watson { 34077bc82500SRobert Watson 34087bc82500SRobert Watson return (ENOSYS); 34097bc82500SRobert Watson } 34107bc82500SRobert Watson 34117bc82500SRobert Watson int 34127bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 34137bc82500SRobert Watson { 34147bc82500SRobert Watson 34157bc82500SRobert Watson return (ENOSYS); 34167bc82500SRobert Watson } 34177bc82500SRobert Watson 34187bc82500SRobert Watson int 34197bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 34207bc82500SRobert Watson { 34217bc82500SRobert Watson 34227bc82500SRobert Watson return (ENOSYS); 34237bc82500SRobert Watson } 342495fab37eSRobert Watson 342527f2eac7SRobert Watson int 342627f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 342727f2eac7SRobert Watson { 342827f2eac7SRobert Watson 342927f2eac7SRobert Watson return (ENOSYS); 343027f2eac7SRobert Watson } 343127f2eac7SRobert Watson 343295fab37eSRobert Watson #endif /* !MAC */ 3433