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; 52274e62b1bSRobert Watson case MAC_CREATE_DEVFS_SYMLINK: 52374e62b1bSRobert Watson mpc->mpc_ops->mpo_create_devfs_symlink = 52474e62b1bSRobert Watson mpe->mpe_function; 52574e62b1bSRobert Watson break; 52695fab37eSRobert Watson case MAC_CREATE_DEVFS_VNODE: 52795fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_vnode = 52895fab37eSRobert Watson mpe->mpe_function; 52995fab37eSRobert Watson break; 53095fab37eSRobert Watson case MAC_STDCREATEVNODE_EA: 53195fab37eSRobert Watson mpc->mpc_ops->mpo_stdcreatevnode_ea = 53295fab37eSRobert Watson mpe->mpe_function; 53395fab37eSRobert Watson break; 53495fab37eSRobert Watson case MAC_CREATE_VNODE: 53595fab37eSRobert Watson mpc->mpc_ops->mpo_create_vnode = 53695fab37eSRobert Watson mpe->mpe_function; 53795fab37eSRobert Watson break; 53895fab37eSRobert Watson case MAC_CREATE_MOUNT: 53995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mount = 54095fab37eSRobert Watson mpe->mpe_function; 54195fab37eSRobert Watson break; 54295fab37eSRobert Watson case MAC_CREATE_ROOT_MOUNT: 54395fab37eSRobert Watson mpc->mpc_ops->mpo_create_root_mount = 54495fab37eSRobert Watson mpe->mpe_function; 54595fab37eSRobert Watson break; 54695fab37eSRobert Watson case MAC_RELABEL_VNODE: 54795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_vnode = 54895fab37eSRobert Watson mpe->mpe_function; 54995fab37eSRobert Watson break; 55095fab37eSRobert Watson case MAC_UPDATE_DEVFSDIRENT: 55195fab37eSRobert Watson mpc->mpc_ops->mpo_update_devfsdirent = 55295fab37eSRobert Watson mpe->mpe_function; 55395fab37eSRobert Watson break; 55495fab37eSRobert Watson case MAC_UPDATE_PROCFSVNODE: 55595fab37eSRobert Watson mpc->mpc_ops->mpo_update_procfsvnode = 55695fab37eSRobert Watson mpe->mpe_function; 55795fab37eSRobert Watson break; 55895fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTATTR: 55995fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_extattr = 56095fab37eSRobert Watson mpe->mpe_function; 56195fab37eSRobert Watson break; 56295fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 56395fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_externalized = 56495fab37eSRobert Watson mpe->mpe_function; 56595fab37eSRobert Watson break; 56695fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_MOUNT: 56795fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_mount = 56895fab37eSRobert Watson mpe->mpe_function; 56995fab37eSRobert Watson break; 57095fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_SOCKET: 57195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_socket = 57295fab37eSRobert Watson mpe->mpe_function; 57395fab37eSRobert Watson break; 57495fab37eSRobert Watson case MAC_CREATE_PIPE: 57595fab37eSRobert Watson mpc->mpc_ops->mpo_create_pipe = 57695fab37eSRobert Watson mpe->mpe_function; 57795fab37eSRobert Watson break; 57895fab37eSRobert Watson case MAC_CREATE_SOCKET: 57995fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket = 58095fab37eSRobert Watson mpe->mpe_function; 58195fab37eSRobert Watson break; 58295fab37eSRobert Watson case MAC_CREATE_SOCKET_FROM_SOCKET: 58395fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket_from_socket = 58495fab37eSRobert Watson mpe->mpe_function; 58595fab37eSRobert Watson break; 58695fab37eSRobert Watson case MAC_RELABEL_PIPE: 58795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_pipe = 58895fab37eSRobert Watson mpe->mpe_function; 58995fab37eSRobert Watson break; 59095fab37eSRobert Watson case MAC_RELABEL_SOCKET: 59195fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_socket = 59295fab37eSRobert Watson mpe->mpe_function; 59395fab37eSRobert Watson break; 59495fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_MBUF: 59595fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 59695fab37eSRobert Watson mpe->mpe_function; 59795fab37eSRobert Watson break; 59895fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 59995fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 60095fab37eSRobert Watson mpe->mpe_function; 60195fab37eSRobert Watson break; 60295fab37eSRobert Watson case MAC_CREATE_BPFDESC: 60395fab37eSRobert Watson mpc->mpc_ops->mpo_create_bpfdesc = 60495fab37eSRobert Watson mpe->mpe_function; 60595fab37eSRobert Watson break; 60695fab37eSRobert Watson case MAC_CREATE_DATAGRAM_FROM_IPQ: 60795fab37eSRobert Watson mpc->mpc_ops->mpo_create_datagram_from_ipq = 60895fab37eSRobert Watson mpe->mpe_function; 60995fab37eSRobert Watson break; 61095fab37eSRobert Watson case MAC_CREATE_FRAGMENT: 61195fab37eSRobert Watson mpc->mpc_ops->mpo_create_fragment = 61295fab37eSRobert Watson mpe->mpe_function; 61395fab37eSRobert Watson break; 61495fab37eSRobert Watson case MAC_CREATE_IFNET: 61595fab37eSRobert Watson mpc->mpc_ops->mpo_create_ifnet = 61695fab37eSRobert Watson mpe->mpe_function; 61795fab37eSRobert Watson break; 61895fab37eSRobert Watson case MAC_CREATE_IPQ: 61995fab37eSRobert Watson mpc->mpc_ops->mpo_create_ipq = 62095fab37eSRobert Watson mpe->mpe_function; 62195fab37eSRobert Watson break; 62295fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_MBUF: 62395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 62495fab37eSRobert Watson mpe->mpe_function; 62595fab37eSRobert Watson break; 62695fab37eSRobert Watson case MAC_CREATE_MBUF_LINKLAYER: 62795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_linklayer = 62895fab37eSRobert Watson mpe->mpe_function; 62995fab37eSRobert Watson break; 63095fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_BPFDESC: 63195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 63295fab37eSRobert Watson mpe->mpe_function; 63395fab37eSRobert Watson break; 63495fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_IFNET: 63595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 63695fab37eSRobert Watson mpe->mpe_function; 63795fab37eSRobert Watson break; 63895fab37eSRobert Watson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 63995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 64095fab37eSRobert Watson mpe->mpe_function; 64195fab37eSRobert Watson break; 64295fab37eSRobert Watson case MAC_CREATE_MBUF_NETLAYER: 64395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_netlayer = 64495fab37eSRobert Watson mpe->mpe_function; 64595fab37eSRobert Watson break; 64695fab37eSRobert Watson case MAC_FRAGMENT_MATCH: 64795fab37eSRobert Watson mpc->mpc_ops->mpo_fragment_match = 64895fab37eSRobert Watson mpe->mpe_function; 64995fab37eSRobert Watson break; 65095fab37eSRobert Watson case MAC_RELABEL_IFNET: 65195fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_ifnet = 65295fab37eSRobert Watson mpe->mpe_function; 65395fab37eSRobert Watson break; 65495fab37eSRobert Watson case MAC_UPDATE_IPQ: 65595fab37eSRobert Watson mpc->mpc_ops->mpo_update_ipq = 65695fab37eSRobert Watson mpe->mpe_function; 65795fab37eSRobert Watson break; 65895fab37eSRobert Watson case MAC_CREATE_CRED: 65995fab37eSRobert Watson mpc->mpc_ops->mpo_create_cred = 66095fab37eSRobert Watson mpe->mpe_function; 66195fab37eSRobert Watson break; 66295fab37eSRobert Watson case MAC_EXECVE_TRANSITION: 66395fab37eSRobert Watson mpc->mpc_ops->mpo_execve_transition = 66495fab37eSRobert Watson mpe->mpe_function; 66595fab37eSRobert Watson break; 66695fab37eSRobert Watson case MAC_EXECVE_WILL_TRANSITION: 66795fab37eSRobert Watson mpc->mpc_ops->mpo_execve_will_transition = 66895fab37eSRobert Watson mpe->mpe_function; 66995fab37eSRobert Watson break; 67095fab37eSRobert Watson case MAC_CREATE_PROC0: 671226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc0 = 672226b96fbSRobert Watson mpe->mpe_function; 67395fab37eSRobert Watson break; 67495fab37eSRobert Watson case MAC_CREATE_PROC1: 675226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc1 = 676226b96fbSRobert Watson mpe->mpe_function; 67795fab37eSRobert Watson break; 67895fab37eSRobert Watson case MAC_RELABEL_CRED: 67995fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_cred = 68095fab37eSRobert Watson mpe->mpe_function; 68195fab37eSRobert Watson break; 68292dbb82aSRobert Watson case MAC_THREAD_USERRET: 68392dbb82aSRobert Watson mpc->mpc_ops->mpo_thread_userret = 68492dbb82aSRobert Watson mpe->mpe_function; 68592dbb82aSRobert Watson break; 68695fab37eSRobert Watson case MAC_CHECK_BPFDESC_RECEIVE: 68795fab37eSRobert Watson mpc->mpc_ops->mpo_check_bpfdesc_receive = 68895fab37eSRobert Watson mpe->mpe_function; 68995fab37eSRobert Watson break; 69095fab37eSRobert Watson case MAC_CHECK_CRED_RELABEL: 69195fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_relabel = 69295fab37eSRobert Watson mpe->mpe_function; 69395fab37eSRobert Watson break; 69495fab37eSRobert Watson case MAC_CHECK_CRED_VISIBLE: 69595fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_visible = 69695fab37eSRobert Watson mpe->mpe_function; 69795fab37eSRobert Watson break; 69895fab37eSRobert Watson case MAC_CHECK_IFNET_RELABEL: 69995fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_relabel = 70095fab37eSRobert Watson mpe->mpe_function; 70195fab37eSRobert Watson break; 70295fab37eSRobert Watson case MAC_CHECK_IFNET_TRANSMIT: 70395fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_transmit = 70495fab37eSRobert Watson mpe->mpe_function; 70595fab37eSRobert Watson break; 70695fab37eSRobert Watson case MAC_CHECK_MOUNT_STAT: 70795fab37eSRobert Watson mpc->mpc_ops->mpo_check_mount_stat = 70895fab37eSRobert Watson mpe->mpe_function; 70995fab37eSRobert Watson break; 71095fab37eSRobert Watson case MAC_CHECK_PIPE_IOCTL: 71195fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_ioctl = 71295fab37eSRobert Watson mpe->mpe_function; 71395fab37eSRobert Watson break; 714c024c3eeSRobert Watson case MAC_CHECK_PIPE_POLL: 715c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_poll = 716c024c3eeSRobert Watson mpe->mpe_function; 717c024c3eeSRobert Watson break; 718c024c3eeSRobert Watson case MAC_CHECK_PIPE_READ: 719c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_read = 72095fab37eSRobert Watson mpe->mpe_function; 72195fab37eSRobert Watson break; 72295fab37eSRobert Watson case MAC_CHECK_PIPE_RELABEL: 72395fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_relabel = 72495fab37eSRobert Watson mpe->mpe_function; 72595fab37eSRobert Watson break; 726c024c3eeSRobert Watson case MAC_CHECK_PIPE_STAT: 727c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_stat = 728c024c3eeSRobert Watson mpe->mpe_function; 729c024c3eeSRobert Watson break; 730c024c3eeSRobert Watson case MAC_CHECK_PIPE_WRITE: 731c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_write = 732c024c3eeSRobert Watson mpe->mpe_function; 733c024c3eeSRobert Watson break; 73495fab37eSRobert Watson case MAC_CHECK_PROC_DEBUG: 73595fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_debug = 73695fab37eSRobert Watson mpe->mpe_function; 73795fab37eSRobert Watson break; 73895fab37eSRobert Watson case MAC_CHECK_PROC_SCHED: 73995fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_sched = 74095fab37eSRobert Watson mpe->mpe_function; 74195fab37eSRobert Watson break; 74295fab37eSRobert Watson case MAC_CHECK_PROC_SIGNAL: 74395fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_signal = 74495fab37eSRobert Watson mpe->mpe_function; 74595fab37eSRobert Watson break; 74695fab37eSRobert Watson case MAC_CHECK_SOCKET_BIND: 74795fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_bind = 74895fab37eSRobert Watson mpe->mpe_function; 74995fab37eSRobert Watson break; 75095fab37eSRobert Watson case MAC_CHECK_SOCKET_CONNECT: 75195fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_connect = 75295fab37eSRobert Watson mpe->mpe_function; 75395fab37eSRobert Watson break; 754d61198e4SRobert Watson case MAC_CHECK_SOCKET_DELIVER: 755d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_deliver = 75695fab37eSRobert Watson mpe->mpe_function; 75795fab37eSRobert Watson break; 758d61198e4SRobert Watson case MAC_CHECK_SOCKET_LISTEN: 759d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_listen = 76095fab37eSRobert Watson mpe->mpe_function; 76195fab37eSRobert Watson break; 76295fab37eSRobert Watson case MAC_CHECK_SOCKET_RELABEL: 76395fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_relabel = 76495fab37eSRobert Watson mpe->mpe_function; 76595fab37eSRobert Watson break; 76695fab37eSRobert Watson case MAC_CHECK_SOCKET_VISIBLE: 76795fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_visible = 76895fab37eSRobert Watson mpe->mpe_function; 76995fab37eSRobert Watson break; 77095fab37eSRobert Watson case MAC_CHECK_VNODE_ACCESS: 77195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_access = 77295fab37eSRobert Watson mpe->mpe_function; 77395fab37eSRobert Watson break; 77495fab37eSRobert Watson case MAC_CHECK_VNODE_CHDIR: 77595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chdir = 77695fab37eSRobert Watson mpe->mpe_function; 77795fab37eSRobert Watson break; 77895fab37eSRobert Watson case MAC_CHECK_VNODE_CHROOT: 77995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chroot = 78095fab37eSRobert Watson mpe->mpe_function; 78195fab37eSRobert Watson break; 78295fab37eSRobert Watson case MAC_CHECK_VNODE_CREATE: 78395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_create = 78495fab37eSRobert Watson mpe->mpe_function; 78595fab37eSRobert Watson break; 78695fab37eSRobert Watson case MAC_CHECK_VNODE_DELETE: 78795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_delete = 78895fab37eSRobert Watson mpe->mpe_function; 78995fab37eSRobert Watson break; 79095fab37eSRobert Watson case MAC_CHECK_VNODE_DELETEACL: 79195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_deleteacl = 79295fab37eSRobert Watson mpe->mpe_function; 79395fab37eSRobert Watson break; 79495fab37eSRobert Watson case MAC_CHECK_VNODE_EXEC: 79595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_exec = 79695fab37eSRobert Watson mpe->mpe_function; 79795fab37eSRobert Watson break; 79895fab37eSRobert Watson case MAC_CHECK_VNODE_GETACL: 79995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getacl = 80095fab37eSRobert Watson mpe->mpe_function; 80195fab37eSRobert Watson break; 80295fab37eSRobert Watson case MAC_CHECK_VNODE_GETEXTATTR: 80395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getextattr = 80495fab37eSRobert Watson mpe->mpe_function; 80595fab37eSRobert Watson break; 8060a694196SRobert Watson case MAC_CHECK_VNODE_LINK: 8070a694196SRobert Watson mpc->mpc_ops->mpo_check_vnode_link = 8080a694196SRobert Watson mpe->mpe_function; 8090a694196SRobert Watson break; 81095fab37eSRobert Watson case MAC_CHECK_VNODE_LOOKUP: 81195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_lookup = 81295fab37eSRobert Watson mpe->mpe_function; 81395fab37eSRobert Watson break; 81495fab37eSRobert Watson case MAC_CHECK_VNODE_MMAP_PERMS: 81595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 81695fab37eSRobert Watson mpe->mpe_function; 81795fab37eSRobert Watson break; 81895fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 81995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 82095fab37eSRobert Watson mpe->mpe_function; 82195fab37eSRobert Watson break; 8227f724f8bSRobert Watson case MAC_CHECK_VNODE_POLL: 8237f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_poll = 8247f724f8bSRobert Watson mpe->mpe_function; 8257f724f8bSRobert Watson break; 8267f724f8bSRobert Watson case MAC_CHECK_VNODE_READ: 8277f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_read = 8287f724f8bSRobert Watson mpe->mpe_function; 8297f724f8bSRobert Watson break; 83095fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 83195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 83295fab37eSRobert Watson mpe->mpe_function; 83395fab37eSRobert Watson break; 83495fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 83595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 83695fab37eSRobert Watson mpe->mpe_function; 83795fab37eSRobert Watson break; 83895fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 83995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 84095fab37eSRobert Watson mpe->mpe_function; 84195fab37eSRobert Watson break; 84295fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 84395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 84495fab37eSRobert Watson mpe->mpe_function; 84595fab37eSRobert Watson break; 84695fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 84795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 84895fab37eSRobert Watson mpe->mpe_function; 84995fab37eSRobert Watson break; 85095fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 85195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 85295fab37eSRobert Watson mpe->mpe_function; 85395fab37eSRobert Watson break; 85495fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 85595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 85695fab37eSRobert Watson mpe->mpe_function; 85795fab37eSRobert Watson break; 85895fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 85995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 86095fab37eSRobert Watson mpe->mpe_function; 86195fab37eSRobert Watson break; 86295fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 86395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 86495fab37eSRobert Watson mpe->mpe_function; 86595fab37eSRobert Watson break; 86695fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 86795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 86895fab37eSRobert Watson mpe->mpe_function; 86995fab37eSRobert Watson break; 87095fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 87195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 87295fab37eSRobert Watson mpe->mpe_function; 87395fab37eSRobert Watson break; 87495fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 87595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 87695fab37eSRobert Watson mpe->mpe_function; 87795fab37eSRobert Watson break; 87895fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 87995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 88095fab37eSRobert Watson mpe->mpe_function; 88195fab37eSRobert Watson break; 8827f724f8bSRobert Watson case MAC_CHECK_VNODE_WRITE: 8837f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_write = 8847f724f8bSRobert Watson mpe->mpe_function; 8857f724f8bSRobert Watson break; 88695fab37eSRobert Watson /* 88795fab37eSRobert Watson default: 88895fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 88995fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 89095fab37eSRobert Watson return (EINVAL); 89195fab37eSRobert Watson */ 89295fab37eSRobert Watson } 89395fab37eSRobert Watson } 89495fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 89595fab37eSRobert Watson if (mac_policy_list_busy > 0) { 89695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89795fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89895fab37eSRobert Watson mpc->mpc_ops = NULL; 89995fab37eSRobert Watson return (EBUSY); 90095fab37eSRobert Watson } 90195fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 90295fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 90395fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 90495fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 90595fab37eSRobert Watson mpc->mpc_ops = NULL; 90695fab37eSRobert Watson return (EEXIST); 90795fab37eSRobert Watson } 90895fab37eSRobert Watson } 90995fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 91095fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 91195fab37eSRobert Watson if (slot == 0) { 91295fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 91395fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 91495fab37eSRobert Watson mpc->mpc_ops = NULL; 91595fab37eSRobert Watson return (ENOMEM); 91695fab37eSRobert Watson } 91795fab37eSRobert Watson slot--; 91895fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 91995fab37eSRobert Watson *mpc->mpc_field_off = slot; 92095fab37eSRobert Watson } 92195fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 92295fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 92395fab37eSRobert Watson 92495fab37eSRobert Watson /* Per-policy initialization. */ 92595fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 92695fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 92795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 92895fab37eSRobert Watson 92995fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 93095fab37eSRobert Watson mpc->mpc_name); 93195fab37eSRobert Watson 93295fab37eSRobert Watson return (0); 93395fab37eSRobert Watson } 93495fab37eSRobert Watson 93595fab37eSRobert Watson static int 93695fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 93795fab37eSRobert Watson { 93895fab37eSRobert Watson 939ea599aa0SRobert Watson /* 940ea599aa0SRobert Watson * If we fail the load, we may get a request to unload. Check 941ea599aa0SRobert Watson * to see if we did the run-time registration, and if not, 942ea599aa0SRobert Watson * silently succeed. 943ea599aa0SRobert Watson */ 944ea599aa0SRobert Watson MAC_POLICY_LIST_LOCK(); 945ea599aa0SRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) == 0) { 946ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 947ea599aa0SRobert Watson return (0); 948ea599aa0SRobert Watson } 94995fab37eSRobert Watson #if 0 95095fab37eSRobert Watson /* 95195fab37eSRobert Watson * Don't allow unloading modules with private data. 95295fab37eSRobert Watson */ 953ea599aa0SRobert Watson if (mpc->mpc_field_off != NULL) { 954ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 95595fab37eSRobert Watson return (EBUSY); 956ea599aa0SRobert Watson } 95795fab37eSRobert Watson #endif 958ea599aa0SRobert Watson /* 959ea599aa0SRobert Watson * Only allow the unload to proceed if the module is unloadable 960ea599aa0SRobert Watson * by its own definition. 961ea599aa0SRobert Watson */ 962ea599aa0SRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) { 963ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 96495fab37eSRobert Watson return (EBUSY); 965ea599aa0SRobert Watson } 966ea599aa0SRobert Watson /* 967ea599aa0SRobert Watson * Right now, we EBUSY if the list is in use. In the future, 968ea599aa0SRobert Watson * for reliability reasons, we might want to sleep and wakeup 969ea599aa0SRobert Watson * later to try again. 970ea599aa0SRobert Watson */ 97195fab37eSRobert Watson if (mac_policy_list_busy > 0) { 97295fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 97395fab37eSRobert Watson return (EBUSY); 97495fab37eSRobert Watson } 97595fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 97695fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 97795fab37eSRobert Watson 97895fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 97995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 98095fab37eSRobert Watson 98195fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 98295fab37eSRobert Watson mpc->mpc_ops = NULL; 98395fab37eSRobert Watson 98495fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 98595fab37eSRobert Watson mpc->mpc_name); 98695fab37eSRobert Watson 98795fab37eSRobert Watson return (0); 98895fab37eSRobert Watson } 98995fab37eSRobert Watson 99095fab37eSRobert Watson /* 99195fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 99295fab37eSRobert Watson * value with the higher precedence. 99395fab37eSRobert Watson */ 99495fab37eSRobert Watson static int 99595fab37eSRobert Watson error_select(int error1, int error2) 99695fab37eSRobert Watson { 99795fab37eSRobert Watson 99895fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 99995fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 100095fab37eSRobert Watson return (EDEADLK); 100195fab37eSRobert Watson 100295fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 100395fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 100495fab37eSRobert Watson return (EINVAL); 100595fab37eSRobert Watson 100695fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 100795fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 100895fab37eSRobert Watson return (ESRCH); 100995fab37eSRobert Watson 101095fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 101195fab37eSRobert Watson return (ENOENT); 101295fab37eSRobert Watson 101395fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 101495fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 101595fab37eSRobert Watson return (EACCES); 101695fab37eSRobert Watson 101795fab37eSRobert Watson /* Precedence goes to privilege. */ 101895fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 101995fab37eSRobert Watson return (EPERM); 102095fab37eSRobert Watson 102195fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 102295fab37eSRobert Watson if (error1 != 0) 102395fab37eSRobert Watson return (error1); 102495fab37eSRobert Watson return (error2); 102595fab37eSRobert Watson } 102695fab37eSRobert Watson 102708bcdc58SRobert Watson static void 102808bcdc58SRobert Watson mac_init_label(struct label *label) 102908bcdc58SRobert Watson { 103008bcdc58SRobert Watson 103108bcdc58SRobert Watson bzero(label, sizeof(*label)); 103208bcdc58SRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 103308bcdc58SRobert Watson } 103408bcdc58SRobert Watson 103508bcdc58SRobert Watson static void 103608bcdc58SRobert Watson mac_destroy_label(struct label *label) 103708bcdc58SRobert Watson { 103808bcdc58SRobert Watson 103908bcdc58SRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 104008bcdc58SRobert Watson ("destroying uninitialized label")); 104108bcdc58SRobert Watson 104208bcdc58SRobert Watson bzero(label, sizeof(*label)); 104308bcdc58SRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 104408bcdc58SRobert Watson } 104508bcdc58SRobert Watson 104608bcdc58SRobert Watson static void 104708bcdc58SRobert Watson mac_init_structmac(struct mac *mac) 104808bcdc58SRobert Watson { 104908bcdc58SRobert Watson 105008bcdc58SRobert Watson bzero(mac, sizeof(*mac)); 105108bcdc58SRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 105208bcdc58SRobert Watson } 105308bcdc58SRobert Watson 105408bcdc58SRobert Watson void 105587807196SRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 105608bcdc58SRobert Watson { 105708bcdc58SRobert Watson 105887807196SRobert Watson mac_init_label(&bpf_d->bd_label); 105987807196SRobert Watson MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label); 106008bcdc58SRobert Watson #ifdef MAC_DEBUG 106187807196SRobert Watson atomic_add_int(&nmacbpfdescs, 1); 106208bcdc58SRobert Watson #endif 106308bcdc58SRobert Watson } 106408bcdc58SRobert Watson 106508bcdc58SRobert Watson void 106608bcdc58SRobert Watson mac_init_cred(struct ucred *cr) 106708bcdc58SRobert Watson { 106808bcdc58SRobert Watson 106908bcdc58SRobert Watson mac_init_label(&cr->cr_label); 107008bcdc58SRobert Watson MAC_PERFORM(init_cred_label, &cr->cr_label); 107108bcdc58SRobert Watson #ifdef MAC_DEBUG 107208bcdc58SRobert Watson atomic_add_int(&nmaccreds, 1); 107308bcdc58SRobert Watson #endif 107408bcdc58SRobert Watson } 107508bcdc58SRobert Watson 107608bcdc58SRobert Watson void 107787807196SRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 107808bcdc58SRobert Watson { 107908bcdc58SRobert Watson 108087807196SRobert Watson mac_init_label(&de->de_label); 108187807196SRobert Watson MAC_PERFORM(init_devfsdirent_label, &de->de_label); 108208bcdc58SRobert Watson #ifdef MAC_DEBUG 108387807196SRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 108408bcdc58SRobert Watson #endif 108508bcdc58SRobert Watson } 108608bcdc58SRobert Watson 108708bcdc58SRobert Watson void 108808bcdc58SRobert Watson mac_init_ifnet(struct ifnet *ifp) 108908bcdc58SRobert Watson { 109008bcdc58SRobert Watson 109108bcdc58SRobert Watson mac_init_label(&ifp->if_label); 109208bcdc58SRobert Watson MAC_PERFORM(init_ifnet_label, &ifp->if_label); 109308bcdc58SRobert Watson #ifdef MAC_DEBUG 109408bcdc58SRobert Watson atomic_add_int(&nmacifnets, 1); 109508bcdc58SRobert Watson #endif 109608bcdc58SRobert Watson } 109708bcdc58SRobert Watson 109808bcdc58SRobert Watson void 109908bcdc58SRobert Watson mac_init_ipq(struct ipq *ipq) 110008bcdc58SRobert Watson { 110108bcdc58SRobert Watson 110208bcdc58SRobert Watson mac_init_label(&ipq->ipq_label); 110308bcdc58SRobert Watson MAC_PERFORM(init_ipq_label, &ipq->ipq_label); 110408bcdc58SRobert Watson #ifdef MAC_DEBUG 110508bcdc58SRobert Watson atomic_add_int(&nmacipqs, 1); 110608bcdc58SRobert Watson #endif 110708bcdc58SRobert Watson } 110808bcdc58SRobert Watson 110987807196SRobert Watson int 111087807196SRobert Watson mac_init_mbuf(struct mbuf *m, int flag) 111108bcdc58SRobert Watson { 111256c15412SRobert Watson int error; 111356c15412SRobert Watson 111487807196SRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 111508bcdc58SRobert Watson 111687807196SRobert Watson mac_init_label(&m->m_pkthdr.label); 111787807196SRobert Watson 111856c15412SRobert Watson MAC_CHECK(init_mbuf_label, &m->m_pkthdr.label, flag); 111956c15412SRobert Watson if (error) { 112056c15412SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 112156c15412SRobert Watson mac_destroy_label(&m->m_pkthdr.label); 112256c15412SRobert Watson } 112356c15412SRobert Watson 112408bcdc58SRobert Watson #ifdef MAC_DEBUG 112556c15412SRobert Watson if (error == 0) 112687807196SRobert Watson atomic_add_int(&nmacmbufs, 1); 112708bcdc58SRobert Watson #endif 112856c15412SRobert Watson return (error); 112908bcdc58SRobert Watson } 113008bcdc58SRobert Watson 113108bcdc58SRobert Watson void 113287807196SRobert Watson mac_init_mount(struct mount *mp) 113308bcdc58SRobert Watson { 113408bcdc58SRobert Watson 113587807196SRobert Watson mac_init_label(&mp->mnt_mntlabel); 113687807196SRobert Watson mac_init_label(&mp->mnt_fslabel); 113787807196SRobert Watson MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel); 113887807196SRobert Watson MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel); 113908bcdc58SRobert Watson #ifdef MAC_DEBUG 114087807196SRobert Watson atomic_add_int(&nmacmounts, 1); 114108bcdc58SRobert Watson #endif 114208bcdc58SRobert Watson } 114308bcdc58SRobert Watson 114408bcdc58SRobert Watson void 114508bcdc58SRobert Watson mac_init_pipe(struct pipe *pipe) 114608bcdc58SRobert Watson { 114708bcdc58SRobert Watson struct label *label; 114808bcdc58SRobert Watson 114908bcdc58SRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 115008bcdc58SRobert Watson mac_init_label(label); 115108bcdc58SRobert Watson pipe->pipe_label = label; 115208bcdc58SRobert Watson pipe->pipe_peer->pipe_label = label; 115308bcdc58SRobert Watson MAC_PERFORM(init_pipe_label, pipe->pipe_label); 115408bcdc58SRobert Watson #ifdef MAC_DEBUG 115508bcdc58SRobert Watson atomic_add_int(&nmacpipes, 1); 115608bcdc58SRobert Watson #endif 115708bcdc58SRobert Watson } 115808bcdc58SRobert Watson 115908bcdc58SRobert Watson void 116087807196SRobert Watson mac_init_socket(struct socket *socket) 116108bcdc58SRobert Watson { 116208bcdc58SRobert Watson 116387807196SRobert Watson mac_init_label(&socket->so_label); 116487807196SRobert Watson mac_init_label(&socket->so_peerlabel); 116587807196SRobert Watson MAC_PERFORM(init_socket_label, &socket->so_label); 116687807196SRobert Watson MAC_PERFORM(init_socket_peer_label, &socket->so_peerlabel); 116708bcdc58SRobert Watson #ifdef MAC_DEBUG 116887807196SRobert Watson atomic_add_int(&nmacsockets, 1); 116987807196SRobert Watson #endif 117087807196SRobert Watson } 117187807196SRobert Watson 117287807196SRobert Watson static void 117387807196SRobert Watson mac_init_temp(struct label *label) 117487807196SRobert Watson { 117587807196SRobert Watson 117687807196SRobert Watson mac_init_label(label); 117787807196SRobert Watson MAC_PERFORM(init_temp_label, label); 117887807196SRobert Watson #ifdef MAC_DEBUG 117987807196SRobert Watson atomic_add_int(&nmactemp, 1); 118008bcdc58SRobert Watson #endif 118108bcdc58SRobert Watson } 118208bcdc58SRobert Watson 118308bcdc58SRobert Watson void 118487807196SRobert Watson mac_init_vnode(struct vnode *vp) 118508bcdc58SRobert Watson { 118608bcdc58SRobert Watson 118787807196SRobert Watson mac_init_label(&vp->v_label); 118887807196SRobert Watson MAC_PERFORM(init_vnode_label, &vp->v_label); 118908bcdc58SRobert Watson #ifdef MAC_DEBUG 119087807196SRobert Watson atomic_add_int(&nmacvnodes, 1); 119108bcdc58SRobert Watson #endif 119208bcdc58SRobert Watson } 119308bcdc58SRobert Watson 119408bcdc58SRobert Watson void 119508bcdc58SRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 119608bcdc58SRobert Watson { 119708bcdc58SRobert Watson 119808bcdc58SRobert Watson MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label); 119908bcdc58SRobert Watson mac_destroy_label(&bpf_d->bd_label); 120008bcdc58SRobert Watson #ifdef MAC_DEBUG 120108bcdc58SRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 120208bcdc58SRobert Watson #endif 120308bcdc58SRobert Watson } 120408bcdc58SRobert Watson 120508bcdc58SRobert Watson void 120687807196SRobert Watson mac_destroy_cred(struct ucred *cr) 120708bcdc58SRobert Watson { 120808bcdc58SRobert Watson 120987807196SRobert Watson MAC_PERFORM(destroy_cred_label, &cr->cr_label); 121087807196SRobert Watson mac_destroy_label(&cr->cr_label); 121108bcdc58SRobert Watson #ifdef MAC_DEBUG 121287807196SRobert Watson atomic_subtract_int(&nmaccreds, 1); 121387807196SRobert Watson #endif 121487807196SRobert Watson } 121587807196SRobert Watson 121687807196SRobert Watson void 121787807196SRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 121887807196SRobert Watson { 121987807196SRobert Watson 122087807196SRobert Watson MAC_PERFORM(destroy_devfsdirent_label, &de->de_label); 122187807196SRobert Watson mac_destroy_label(&de->de_label); 122287807196SRobert Watson #ifdef MAC_DEBUG 122387807196SRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 122487807196SRobert Watson #endif 122587807196SRobert Watson } 122687807196SRobert Watson 122787807196SRobert Watson void 122887807196SRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 122987807196SRobert Watson { 123087807196SRobert Watson 123187807196SRobert Watson MAC_PERFORM(destroy_ifnet_label, &ifp->if_label); 123287807196SRobert Watson mac_destroy_label(&ifp->if_label); 123387807196SRobert Watson #ifdef MAC_DEBUG 123487807196SRobert Watson atomic_subtract_int(&nmacifnets, 1); 123587807196SRobert Watson #endif 123687807196SRobert Watson } 123787807196SRobert Watson 123887807196SRobert Watson void 123987807196SRobert Watson mac_destroy_ipq(struct ipq *ipq) 124087807196SRobert Watson { 124187807196SRobert Watson 124287807196SRobert Watson MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label); 124387807196SRobert Watson mac_destroy_label(&ipq->ipq_label); 124487807196SRobert Watson #ifdef MAC_DEBUG 124587807196SRobert Watson atomic_subtract_int(&nmacipqs, 1); 124687807196SRobert Watson #endif 124787807196SRobert Watson } 124887807196SRobert Watson 124987807196SRobert Watson void 125087807196SRobert Watson mac_destroy_mbuf(struct mbuf *m) 125187807196SRobert Watson { 125287807196SRobert Watson 125387807196SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 125487807196SRobert Watson mac_destroy_label(&m->m_pkthdr.label); 125587807196SRobert Watson #ifdef MAC_DEBUG 125687807196SRobert Watson atomic_subtract_int(&nmacmbufs, 1); 125708bcdc58SRobert Watson #endif 125808bcdc58SRobert Watson } 125908bcdc58SRobert Watson 126008bcdc58SRobert Watson void 126108bcdc58SRobert Watson mac_destroy_mount(struct mount *mp) 126208bcdc58SRobert Watson { 126308bcdc58SRobert Watson 126408bcdc58SRobert Watson MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel); 126508bcdc58SRobert Watson MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel); 126608bcdc58SRobert Watson mac_destroy_label(&mp->mnt_fslabel); 126708bcdc58SRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 126808bcdc58SRobert Watson #ifdef MAC_DEBUG 126908bcdc58SRobert Watson atomic_subtract_int(&nmacmounts, 1); 127008bcdc58SRobert Watson #endif 127108bcdc58SRobert Watson } 127208bcdc58SRobert Watson 127387807196SRobert Watson void 127487807196SRobert Watson mac_destroy_pipe(struct pipe *pipe) 127508bcdc58SRobert Watson { 127608bcdc58SRobert Watson 127787807196SRobert Watson MAC_PERFORM(destroy_pipe_label, pipe->pipe_label); 127887807196SRobert Watson mac_destroy_label(pipe->pipe_label); 127987807196SRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 128008bcdc58SRobert Watson #ifdef MAC_DEBUG 128187807196SRobert Watson atomic_subtract_int(&nmacpipes, 1); 128287807196SRobert Watson #endif 128387807196SRobert Watson } 128487807196SRobert Watson 128587807196SRobert Watson void 128687807196SRobert Watson mac_destroy_socket(struct socket *socket) 128787807196SRobert Watson { 128887807196SRobert Watson 128987807196SRobert Watson MAC_PERFORM(destroy_socket_label, &socket->so_label); 129087807196SRobert Watson MAC_PERFORM(destroy_socket_peer_label, &socket->so_peerlabel); 129187807196SRobert Watson mac_destroy_label(&socket->so_label); 129287807196SRobert Watson mac_destroy_label(&socket->so_peerlabel); 129387807196SRobert Watson #ifdef MAC_DEBUG 129487807196SRobert Watson atomic_subtract_int(&nmacsockets, 1); 129508bcdc58SRobert Watson #endif 129608bcdc58SRobert Watson } 129708bcdc58SRobert Watson 129808bcdc58SRobert Watson static void 129908bcdc58SRobert Watson mac_destroy_temp(struct label *label) 130008bcdc58SRobert Watson { 130108bcdc58SRobert Watson 130208bcdc58SRobert Watson MAC_PERFORM(destroy_temp_label, label); 130308bcdc58SRobert Watson mac_destroy_label(label); 130408bcdc58SRobert Watson #ifdef MAC_DEBUG 130508bcdc58SRobert Watson atomic_subtract_int(&nmactemp, 1); 130608bcdc58SRobert Watson #endif 130708bcdc58SRobert Watson } 130808bcdc58SRobert Watson 130908bcdc58SRobert Watson void 131008bcdc58SRobert Watson mac_destroy_vnode(struct vnode *vp) 131108bcdc58SRobert Watson { 131208bcdc58SRobert Watson 131308bcdc58SRobert Watson MAC_PERFORM(destroy_vnode_label, &vp->v_label); 131408bcdc58SRobert Watson mac_destroy_label(&vp->v_label); 131508bcdc58SRobert Watson #ifdef MAC_DEBUG 131608bcdc58SRobert Watson atomic_subtract_int(&nmacvnodes, 1); 131708bcdc58SRobert Watson #endif 131808bcdc58SRobert Watson } 131908bcdc58SRobert Watson 132069bbb5b1SRobert Watson static int 132169bbb5b1SRobert Watson mac_externalize(struct label *label, struct mac *mac) 132269bbb5b1SRobert Watson { 132369bbb5b1SRobert Watson int error; 132469bbb5b1SRobert Watson 132569bbb5b1SRobert Watson mac_init_structmac(mac); 132669bbb5b1SRobert Watson MAC_CHECK(externalize, label, mac); 132769bbb5b1SRobert Watson 132869bbb5b1SRobert Watson return (error); 132969bbb5b1SRobert Watson } 133069bbb5b1SRobert Watson 133169bbb5b1SRobert Watson static int 133269bbb5b1SRobert Watson mac_internalize(struct label *label, struct mac *mac) 133369bbb5b1SRobert Watson { 133469bbb5b1SRobert Watson int error; 133569bbb5b1SRobert Watson 133669bbb5b1SRobert Watson mac_init_temp(label); 133769bbb5b1SRobert Watson MAC_CHECK(internalize, label, mac); 133869bbb5b1SRobert Watson if (error) 133969bbb5b1SRobert Watson mac_destroy_temp(label); 134069bbb5b1SRobert Watson 134169bbb5b1SRobert Watson return (error); 134269bbb5b1SRobert Watson } 134369bbb5b1SRobert Watson 134469bbb5b1SRobert Watson /* 134569bbb5b1SRobert Watson * Initialize MAC label for the first kernel process, from which other 134669bbb5b1SRobert Watson * kernel processes and threads are spawned. 134769bbb5b1SRobert Watson */ 134869bbb5b1SRobert Watson void 134969bbb5b1SRobert Watson mac_create_proc0(struct ucred *cred) 135069bbb5b1SRobert Watson { 135169bbb5b1SRobert Watson 135269bbb5b1SRobert Watson MAC_PERFORM(create_proc0, cred); 135369bbb5b1SRobert Watson } 135469bbb5b1SRobert Watson 135569bbb5b1SRobert Watson /* 135669bbb5b1SRobert Watson * Initialize MAC label for the first userland process, from which other 135769bbb5b1SRobert Watson * userland processes and threads are spawned. 135869bbb5b1SRobert Watson */ 135969bbb5b1SRobert Watson void 136069bbb5b1SRobert Watson mac_create_proc1(struct ucred *cred) 136169bbb5b1SRobert Watson { 136269bbb5b1SRobert Watson 136369bbb5b1SRobert Watson MAC_PERFORM(create_proc1, cred); 136469bbb5b1SRobert Watson } 136569bbb5b1SRobert Watson 136669bbb5b1SRobert Watson void 136769bbb5b1SRobert Watson mac_thread_userret(struct thread *td) 136869bbb5b1SRobert Watson { 136969bbb5b1SRobert Watson 137069bbb5b1SRobert Watson MAC_PERFORM(thread_userret, td); 137169bbb5b1SRobert Watson } 137269bbb5b1SRobert Watson 137369bbb5b1SRobert Watson /* 137469bbb5b1SRobert Watson * When a new process is created, its label must be initialized. Generally, 137569bbb5b1SRobert Watson * this involves inheritence from the parent process, modulo possible 137669bbb5b1SRobert Watson * deltas. This function allows that processing to take place. 137769bbb5b1SRobert Watson */ 137869bbb5b1SRobert Watson void 137969bbb5b1SRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 138069bbb5b1SRobert Watson { 138169bbb5b1SRobert Watson 138269bbb5b1SRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 138369bbb5b1SRobert Watson } 138469bbb5b1SRobert Watson 138595fab37eSRobert Watson void 138695fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 138795fab37eSRobert Watson { 138895fab37eSRobert Watson 138995fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 139095fab37eSRobert Watson } 139195fab37eSRobert Watson 139295fab37eSRobert Watson void 139395fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 139495fab37eSRobert Watson { 139595fab37eSRobert Watson 139695fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 139795fab37eSRobert Watson } 139895fab37eSRobert Watson 139995fab37eSRobert Watson /* 140095fab37eSRobert Watson * Support callout for policies that manage their own externalization 140195fab37eSRobert Watson * using extended attributes. 140295fab37eSRobert Watson */ 140395fab37eSRobert Watson static int 140495fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 140595fab37eSRobert Watson { 140695fab37eSRobert Watson int error; 140795fab37eSRobert Watson 140895fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 140995fab37eSRobert Watson &mp->mnt_fslabel); 141095fab37eSRobert Watson 141195fab37eSRobert Watson return (error); 141295fab37eSRobert Watson } 141395fab37eSRobert Watson 141495fab37eSRobert Watson /* 141595fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 141695fab37eSRobert Watson * vnode. 141795fab37eSRobert Watson */ 141895fab37eSRobert Watson static int 141995fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 142095fab37eSRobert Watson { 142195fab37eSRobert Watson int error; 142295fab37eSRobert Watson 142395fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 142495fab37eSRobert Watson 142595fab37eSRobert Watson return (error); 142695fab37eSRobert Watson } 142795fab37eSRobert Watson 142895fab37eSRobert Watson /* 142995fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 143095fab37eSRobert Watson * the mountpoint. 143195fab37eSRobert Watson */ 143295fab37eSRobert Watson void 143395fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 143495fab37eSRobert Watson { 143595fab37eSRobert Watson 143695fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 143795fab37eSRobert Watson &mp->mnt_fslabel); 143895fab37eSRobert Watson 1439e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 144095fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 1441e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 144295fab37eSRobert Watson } 144395fab37eSRobert Watson 144495fab37eSRobert Watson /* 144595fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 144695fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 144795fab37eSRobert Watson * extended attributes. 144895fab37eSRobert Watson */ 144995fab37eSRobert Watson int 145095fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 145195fab37eSRobert Watson { 145295fab37eSRobert Watson struct vnode *vp = ap->a_vp; 145395fab37eSRobert Watson struct mac extmac; 145495fab37eSRobert Watson int buflen, error; 145595fab37eSRobert Watson 145695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 145795fab37eSRobert Watson 145895fab37eSRobert Watson /* 145995fab37eSRobert Watson * Call out to external policies first. Order doesn't really 146095fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 146195fab37eSRobert Watson */ 146295fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 146395fab37eSRobert Watson if (error) 146495fab37eSRobert Watson return (error); 146595fab37eSRobert Watson 146695fab37eSRobert Watson buflen = sizeof(extmac); 146795fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 146895fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 146995fab37eSRobert Watson (char *)&extmac, curthread); 147095fab37eSRobert Watson switch (error) { 147195fab37eSRobert Watson case 0: 147295fab37eSRobert Watson /* Got it */ 147395fab37eSRobert Watson break; 147495fab37eSRobert Watson 147595fab37eSRobert Watson case ENOATTR: 147695fab37eSRobert Watson /* 147795fab37eSRobert Watson * Use the label from the mount point. 147895fab37eSRobert Watson */ 147995fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 148095fab37eSRobert Watson return (0); 148195fab37eSRobert Watson 148295fab37eSRobert Watson case EOPNOTSUPP: 148395fab37eSRobert Watson default: 148495fab37eSRobert Watson /* Fail horribly. */ 148595fab37eSRobert Watson return (error); 148695fab37eSRobert Watson } 148795fab37eSRobert Watson 148895fab37eSRobert Watson if (buflen != sizeof(extmac)) 148995fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 149095fab37eSRobert Watson if (error == 0) 149195fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 149295fab37eSRobert Watson if (error == 0) 1493e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 149495fab37eSRobert Watson else { 149595fab37eSRobert Watson struct vattr va; 149695fab37eSRobert Watson 149795fab37eSRobert Watson printf("Corrupted label on %s", 149895fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 149995fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 150095fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 15016be0c25eSRobert Watson #ifdef MAC_DEBUG 150295fab37eSRobert Watson if (mac_debug_label_fallback) { 150395fab37eSRobert Watson printf(", falling back.\n"); 150495fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 150595fab37eSRobert Watson error = 0; 150695fab37eSRobert Watson } else { 15076be0c25eSRobert Watson #endif 150895fab37eSRobert Watson printf(".\n"); 150995fab37eSRobert Watson error = EPERM; 15106be0c25eSRobert Watson #ifdef MAC_DEBUG 151195fab37eSRobert Watson } 15126be0c25eSRobert Watson #endif 151395fab37eSRobert Watson } 151495fab37eSRobert Watson 151595fab37eSRobert Watson return (error); 151695fab37eSRobert Watson } 151795fab37eSRobert Watson 151895fab37eSRobert Watson /* 151995fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 152095fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 152195fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 152295fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 152395fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 152495fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 152595fab37eSRobert Watson * all vnodes. 152695fab37eSRobert Watson */ 152795fab37eSRobert Watson static int 152895fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 152995fab37eSRobert Watson { 153095fab37eSRobert Watson int error; 153195fab37eSRobert Watson 153295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 153395fab37eSRobert Watson 153495fab37eSRobert Watson if (vp->v_mount == NULL) { 153595fab37eSRobert Watson /* 153695fab37eSRobert Watson Eventually, we probably want to special-case refreshing 153795fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 153895fab37eSRobert Watson that case might be handled here. 153995fab37eSRobert Watson 154095fab37eSRobert Watson mac_update_vnode_deadfs(vp); 154195fab37eSRobert Watson return (0); 154295fab37eSRobert Watson */ 154395fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 154406be2aaaSNate Lawson if (vp->v_type != VNON) 154595fab37eSRobert Watson printf( 154606be2aaaSNate Lawson "vn_refreshlabel: null v_mount with non-VNON\n"); 154795fab37eSRobert Watson return (EBADF); 154895fab37eSRobert Watson } 154995fab37eSRobert Watson 1550e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 155195fab37eSRobert Watson mac_vnode_label_cache_hits++; 155295fab37eSRobert Watson return (0); 155395fab37eSRobert Watson } else 155495fab37eSRobert Watson mac_vnode_label_cache_misses++; 155595fab37eSRobert Watson 155695fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 155795fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 155895fab37eSRobert Watson return (0); 155995fab37eSRobert Watson } 156095fab37eSRobert Watson 156195fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 156295fab37eSRobert Watson switch (error) { 156395fab37eSRobert Watson case EOPNOTSUPP: 156495fab37eSRobert Watson /* 156595fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 156695fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 156795fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 156895fab37eSRobert Watson * about doing this. 156995fab37eSRobert Watson */ 157095fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 157195fab37eSRobert Watson error = 0; 157295fab37eSRobert Watson default: 157395fab37eSRobert Watson return (error); 157495fab37eSRobert Watson } 157595fab37eSRobert Watson } 157695fab37eSRobert Watson 157795fab37eSRobert Watson /* 157895fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 157995fab37eSRobert Watson * function must be called after EA service is available for the vnode, 158095fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 158195fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 158295fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 158395fab37eSRobert Watson */ 158495fab37eSRobert Watson int 158595fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 158695fab37eSRobert Watson { 158795fab37eSRobert Watson struct mac extmac; 158895fab37eSRobert Watson int error; 158995fab37eSRobert Watson 1590e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 159195fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 159295fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 159395fab37eSRobert Watson } else { 159495fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 159595fab37eSRobert Watson if (error) 159695fab37eSRobert Watson return (error); 159795fab37eSRobert Watson 159895fab37eSRobert Watson /* 159995fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 160095fab37eSRobert Watson * disk. If we fail, return a failure to abort the 160195fab37eSRobert Watson * create operation. Really, this failure shouldn't 160295fab37eSRobert Watson * happen except in fairly unusual circumstances (out 160395fab37eSRobert Watson * of disk, etc). 160495fab37eSRobert Watson */ 160595fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 160695fab37eSRobert Watson 160795fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 160895fab37eSRobert Watson if (error) 160995fab37eSRobert Watson return (error); 161095fab37eSRobert Watson 161195fab37eSRobert Watson /* 161295fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 161395fab37eSRobert Watson * directly manage their extended attributes. 161495fab37eSRobert Watson */ 161595fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 161695fab37eSRobert Watson if (error) 161795fab37eSRobert Watson return (error); 161895fab37eSRobert Watson 161995fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 162095fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 162195fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 162295fab37eSRobert Watson if (error == 0) 1623e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 162495fab37eSRobert Watson else { 162595fab37eSRobert Watson #if 0 162695fab37eSRobert Watson /* 162795fab37eSRobert Watson * In theory, we could have fall-back behavior here. 162895fab37eSRobert Watson * It would probably be incorrect. 162995fab37eSRobert Watson */ 163095fab37eSRobert Watson #endif 163195fab37eSRobert Watson return (error); 163295fab37eSRobert Watson } 163395fab37eSRobert Watson } 163495fab37eSRobert Watson 163595fab37eSRobert Watson return (0); 163695fab37eSRobert Watson } 163795fab37eSRobert Watson 163895fab37eSRobert Watson void 163995fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 164095fab37eSRobert Watson { 164195fab37eSRobert Watson int error; 164295fab37eSRobert Watson 164395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 164495fab37eSRobert Watson 164595fab37eSRobert Watson error = vn_refreshlabel(vp, old); 164695fab37eSRobert Watson if (error) { 164795fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 164895fab37eSRobert Watson error); 164995fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 165095fab37eSRobert Watson } 165195fab37eSRobert Watson 165295fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 165395fab37eSRobert Watson } 165495fab37eSRobert Watson 165595fab37eSRobert Watson int 165695fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 165795fab37eSRobert Watson { 165895fab37eSRobert Watson int error, result; 165995fab37eSRobert Watson 166095fab37eSRobert Watson error = vn_refreshlabel(vp, old); 166195fab37eSRobert Watson if (error) 166295fab37eSRobert Watson return (error); 166395fab37eSRobert Watson 166495fab37eSRobert Watson result = 0; 166595fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 166695fab37eSRobert Watson 166795fab37eSRobert Watson return (result); 166895fab37eSRobert Watson } 166995fab37eSRobert Watson 167095fab37eSRobert Watson int 167195fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 167295fab37eSRobert Watson { 167395fab37eSRobert Watson int error; 167495fab37eSRobert Watson 167595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 167695fab37eSRobert Watson 167795fab37eSRobert Watson if (!mac_enforce_fs) 167895fab37eSRobert Watson return (0); 167995fab37eSRobert Watson 168095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 168195fab37eSRobert Watson if (error) 168295fab37eSRobert Watson return (error); 168395fab37eSRobert Watson 168495fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 168595fab37eSRobert Watson return (error); 168695fab37eSRobert Watson } 168795fab37eSRobert Watson 168895fab37eSRobert Watson int 168995fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 169095fab37eSRobert Watson { 169195fab37eSRobert Watson int error; 169295fab37eSRobert Watson 169395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 169495fab37eSRobert Watson 169595fab37eSRobert Watson if (!mac_enforce_fs) 169695fab37eSRobert Watson return (0); 169795fab37eSRobert Watson 169895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 169995fab37eSRobert Watson if (error) 170095fab37eSRobert Watson return (error); 170195fab37eSRobert Watson 170295fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 170395fab37eSRobert Watson return (error); 170495fab37eSRobert Watson } 170595fab37eSRobert Watson 170695fab37eSRobert Watson int 170795fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 170895fab37eSRobert Watson { 170995fab37eSRobert Watson int error; 171095fab37eSRobert Watson 171195fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 171295fab37eSRobert Watson 171395fab37eSRobert Watson if (!mac_enforce_fs) 171495fab37eSRobert Watson return (0); 171595fab37eSRobert Watson 171695fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 171795fab37eSRobert Watson if (error) 171895fab37eSRobert Watson return (error); 171995fab37eSRobert Watson 172095fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 172195fab37eSRobert Watson return (error); 172295fab37eSRobert Watson } 172395fab37eSRobert Watson 172495fab37eSRobert Watson int 172595fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 172695fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 172795fab37eSRobert Watson { 172895fab37eSRobert Watson int error; 172995fab37eSRobert Watson 173095fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 173195fab37eSRobert Watson 173295fab37eSRobert Watson if (!mac_enforce_fs) 173395fab37eSRobert Watson return (0); 173495fab37eSRobert Watson 173595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 173695fab37eSRobert Watson if (error) 173795fab37eSRobert Watson return (error); 173895fab37eSRobert Watson 173995fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 174095fab37eSRobert Watson return (error); 174195fab37eSRobert Watson } 174295fab37eSRobert Watson 174395fab37eSRobert Watson int 174495fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 174595fab37eSRobert Watson struct componentname *cnp) 174695fab37eSRobert Watson { 174795fab37eSRobert Watson int error; 174895fab37eSRobert Watson 174995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 175095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 175195fab37eSRobert Watson 175295fab37eSRobert Watson if (!mac_enforce_fs) 175395fab37eSRobert Watson return (0); 175495fab37eSRobert Watson 175595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 175695fab37eSRobert Watson if (error) 175795fab37eSRobert Watson return (error); 175895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 175995fab37eSRobert Watson if (error) 176095fab37eSRobert Watson return (error); 176195fab37eSRobert Watson 176295fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 176395fab37eSRobert Watson &vp->v_label, cnp); 176495fab37eSRobert Watson return (error); 176595fab37eSRobert Watson } 176695fab37eSRobert Watson 176795fab37eSRobert Watson int 176895fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 176995fab37eSRobert Watson acl_type_t type) 177095fab37eSRobert Watson { 177195fab37eSRobert Watson int error; 177295fab37eSRobert Watson 177395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 177495fab37eSRobert Watson 177595fab37eSRobert Watson if (!mac_enforce_fs) 177695fab37eSRobert Watson return (0); 177795fab37eSRobert Watson 177895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 177995fab37eSRobert Watson if (error) 178095fab37eSRobert Watson return (error); 178195fab37eSRobert Watson 178295fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 178395fab37eSRobert Watson return (error); 178495fab37eSRobert Watson } 178595fab37eSRobert Watson 178695fab37eSRobert Watson int 178795fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 178895fab37eSRobert Watson { 178995fab37eSRobert Watson int error; 179095fab37eSRobert Watson 1791851704bbSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1792851704bbSRobert Watson 179395fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 179495fab37eSRobert Watson return (0); 179595fab37eSRobert Watson 179695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 179795fab37eSRobert Watson if (error) 179895fab37eSRobert Watson return (error); 179995fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 180095fab37eSRobert Watson 180195fab37eSRobert Watson return (error); 180295fab37eSRobert Watson } 180395fab37eSRobert Watson 180495fab37eSRobert Watson int 180595fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 180695fab37eSRobert Watson { 180795fab37eSRobert Watson int error; 180895fab37eSRobert Watson 180995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 181095fab37eSRobert Watson 181195fab37eSRobert Watson if (!mac_enforce_fs) 181295fab37eSRobert Watson return (0); 181395fab37eSRobert Watson 181495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 181595fab37eSRobert Watson if (error) 181695fab37eSRobert Watson return (error); 181795fab37eSRobert Watson 181895fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 181995fab37eSRobert Watson return (error); 182095fab37eSRobert Watson } 182195fab37eSRobert Watson 182295fab37eSRobert Watson int 182395fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 182495fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 182595fab37eSRobert Watson { 182695fab37eSRobert Watson int error; 182795fab37eSRobert Watson 182895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 182995fab37eSRobert Watson 183095fab37eSRobert Watson if (!mac_enforce_fs) 183195fab37eSRobert Watson return (0); 183295fab37eSRobert Watson 183395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 183495fab37eSRobert Watson if (error) 183595fab37eSRobert Watson return (error); 183695fab37eSRobert Watson 183795fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 183895fab37eSRobert Watson attrnamespace, name, uio); 183995fab37eSRobert Watson return (error); 184095fab37eSRobert Watson } 184195fab37eSRobert Watson 184295fab37eSRobert Watson int 18430a694196SRobert Watson mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 18440a694196SRobert Watson struct vnode *vp, struct componentname *cnp) 18450a694196SRobert Watson { 18460a694196SRobert Watson 18470a694196SRobert Watson int error; 18480a694196SRobert Watson 18490a694196SRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_link"); 18500a694196SRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_link"); 18510a694196SRobert Watson 18520a694196SRobert Watson if (!mac_enforce_fs) 18530a694196SRobert Watson return (0); 18540a694196SRobert Watson 18550a694196SRobert Watson error = vn_refreshlabel(dvp, cred); 18560a694196SRobert Watson if (error) 18570a694196SRobert Watson return (error); 18580a694196SRobert Watson 18590a694196SRobert Watson error = vn_refreshlabel(vp, cred); 18600a694196SRobert Watson if (error) 18610a694196SRobert Watson return (error); 18620a694196SRobert Watson 18630a694196SRobert Watson MAC_CHECK(check_vnode_link, cred, dvp, &dvp->v_label, vp, 18640a694196SRobert Watson &vp->v_label, cnp); 18650a694196SRobert Watson return (error); 18660a694196SRobert Watson } 18670a694196SRobert Watson 18680a694196SRobert Watson int 186995fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 187095fab37eSRobert Watson struct componentname *cnp) 187195fab37eSRobert Watson { 187295fab37eSRobert Watson int error; 187395fab37eSRobert Watson 187495fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 187595fab37eSRobert Watson 187695fab37eSRobert Watson if (!mac_enforce_fs) 187795fab37eSRobert Watson return (0); 187895fab37eSRobert Watson 187995fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 188095fab37eSRobert Watson if (error) 188195fab37eSRobert Watson return (error); 188295fab37eSRobert Watson 188395fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 188495fab37eSRobert Watson return (error); 188595fab37eSRobert Watson } 188695fab37eSRobert Watson 188795fab37eSRobert Watson vm_prot_t 188895fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 188995fab37eSRobert Watson { 189095fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 189195fab37eSRobert Watson 1892ca7850c3SRobert Watson if (!mac_enforce_vm) 1893ca7850c3SRobert Watson return (result); 1894ca7850c3SRobert Watson 189595fab37eSRobert Watson /* 189695fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 189795fab37eSRobert Watson */ 189895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 189995fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 190095fab37eSRobert Watson newmapping); 190195fab37eSRobert Watson return (result); 190295fab37eSRobert Watson } 190395fab37eSRobert Watson 190495fab37eSRobert Watson int 190595fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 190695fab37eSRobert Watson { 190795fab37eSRobert Watson int error; 190895fab37eSRobert Watson 190995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 191095fab37eSRobert Watson 191195fab37eSRobert Watson if (!mac_enforce_fs) 191295fab37eSRobert Watson return (0); 191395fab37eSRobert Watson 191495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 191595fab37eSRobert Watson if (error) 191695fab37eSRobert Watson return (error); 191795fab37eSRobert Watson 191895fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 191995fab37eSRobert Watson return (error); 192095fab37eSRobert Watson } 192195fab37eSRobert Watson 192295fab37eSRobert Watson int 1923177142e4SRobert Watson mac_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1924177142e4SRobert Watson struct vnode *vp) 19257f724f8bSRobert Watson { 19267f724f8bSRobert Watson int error; 19277f724f8bSRobert Watson 19287f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 19297f724f8bSRobert Watson 19307f724f8bSRobert Watson if (!mac_enforce_fs) 19317f724f8bSRobert Watson return (0); 19327f724f8bSRobert Watson 1933177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 19347f724f8bSRobert Watson if (error) 19357f724f8bSRobert Watson return (error); 19367f724f8bSRobert Watson 1937177142e4SRobert Watson MAC_CHECK(check_vnode_poll, active_cred, file_cred, vp, 1938177142e4SRobert Watson &vp->v_label); 19397f724f8bSRobert Watson 19407f724f8bSRobert Watson return (error); 19417f724f8bSRobert Watson } 19427f724f8bSRobert Watson 19437f724f8bSRobert Watson int 1944177142e4SRobert Watson mac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 1945177142e4SRobert Watson struct vnode *vp) 19467f724f8bSRobert Watson { 19477f724f8bSRobert Watson int error; 19487f724f8bSRobert Watson 19497f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 19507f724f8bSRobert Watson 19517f724f8bSRobert Watson if (!mac_enforce_fs) 19527f724f8bSRobert Watson return (0); 19537f724f8bSRobert Watson 1954177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 19557f724f8bSRobert Watson if (error) 19567f724f8bSRobert Watson return (error); 19577f724f8bSRobert Watson 1958177142e4SRobert Watson MAC_CHECK(check_vnode_read, active_cred, file_cred, vp, 1959177142e4SRobert Watson &vp->v_label); 19607f724f8bSRobert Watson 19617f724f8bSRobert Watson return (error); 19627f724f8bSRobert Watson } 19637f724f8bSRobert Watson 19647f724f8bSRobert Watson int 196595fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 196695fab37eSRobert Watson { 196795fab37eSRobert Watson int error; 196895fab37eSRobert Watson 196995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 197095fab37eSRobert Watson 197195fab37eSRobert Watson if (!mac_enforce_fs) 197295fab37eSRobert Watson return (0); 197395fab37eSRobert Watson 197495fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 197595fab37eSRobert Watson if (error) 197695fab37eSRobert Watson return (error); 197795fab37eSRobert Watson 197895fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 197995fab37eSRobert Watson return (error); 198095fab37eSRobert Watson } 198195fab37eSRobert Watson 198295fab37eSRobert Watson int 198395fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 198495fab37eSRobert Watson { 198595fab37eSRobert Watson int error; 198695fab37eSRobert Watson 198795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 198895fab37eSRobert Watson 198995fab37eSRobert Watson if (!mac_enforce_fs) 199095fab37eSRobert Watson return (0); 199195fab37eSRobert Watson 199295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 199395fab37eSRobert Watson if (error) 199495fab37eSRobert Watson return (error); 199595fab37eSRobert Watson 199695fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 199795fab37eSRobert Watson return (error); 199895fab37eSRobert Watson } 199995fab37eSRobert Watson 200095fab37eSRobert Watson static int 200195fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 200295fab37eSRobert Watson struct label *newlabel) 200395fab37eSRobert Watson { 200495fab37eSRobert Watson int error; 200595fab37eSRobert Watson 200695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 200795fab37eSRobert Watson 200895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 200995fab37eSRobert Watson if (error) 201095fab37eSRobert Watson return (error); 201195fab37eSRobert Watson 201295fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 201395fab37eSRobert Watson 201495fab37eSRobert Watson return (error); 201595fab37eSRobert Watson } 201695fab37eSRobert Watson 201795fab37eSRobert Watson int 201895fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 201995fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 202095fab37eSRobert Watson { 202195fab37eSRobert Watson int error; 202295fab37eSRobert Watson 202395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 202495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 202595fab37eSRobert Watson 202695fab37eSRobert Watson if (!mac_enforce_fs) 202795fab37eSRobert Watson return (0); 202895fab37eSRobert Watson 202995fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 203095fab37eSRobert Watson if (error) 203195fab37eSRobert Watson return (error); 203295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 203395fab37eSRobert Watson if (error) 203495fab37eSRobert Watson return (error); 203595fab37eSRobert Watson 203695fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 203795fab37eSRobert Watson &vp->v_label, cnp); 203895fab37eSRobert Watson return (error); 203995fab37eSRobert Watson } 204095fab37eSRobert Watson 204195fab37eSRobert Watson int 204295fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 204395fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 204495fab37eSRobert Watson { 204595fab37eSRobert Watson int error; 204695fab37eSRobert Watson 204795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 204895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 204995fab37eSRobert Watson 205095fab37eSRobert Watson if (!mac_enforce_fs) 205195fab37eSRobert Watson return (0); 205295fab37eSRobert Watson 205395fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 205495fab37eSRobert Watson if (error) 205595fab37eSRobert Watson return (error); 205695fab37eSRobert Watson if (vp != NULL) { 205795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 205895fab37eSRobert Watson if (error) 205995fab37eSRobert Watson return (error); 206095fab37eSRobert Watson } 206195fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 206295fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 206395fab37eSRobert Watson return (error); 206495fab37eSRobert Watson } 206595fab37eSRobert Watson 206695fab37eSRobert Watson int 206795fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 206895fab37eSRobert Watson { 206995fab37eSRobert Watson int error; 207095fab37eSRobert Watson 207195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 207295fab37eSRobert Watson 207395fab37eSRobert Watson if (!mac_enforce_fs) 207495fab37eSRobert Watson return (0); 207595fab37eSRobert Watson 207695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 207795fab37eSRobert Watson if (error) 207895fab37eSRobert Watson return (error); 207995fab37eSRobert Watson 208095fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 208195fab37eSRobert Watson return (error); 208295fab37eSRobert Watson } 208395fab37eSRobert Watson 208495fab37eSRobert Watson int 208595fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 208695fab37eSRobert Watson struct acl *acl) 208795fab37eSRobert Watson { 208895fab37eSRobert Watson int error; 208995fab37eSRobert Watson 209095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 209195fab37eSRobert Watson 209295fab37eSRobert Watson if (!mac_enforce_fs) 209395fab37eSRobert Watson return (0); 209495fab37eSRobert Watson 209595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 209695fab37eSRobert Watson if (error) 209795fab37eSRobert Watson return (error); 209895fab37eSRobert Watson 209995fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 210095fab37eSRobert Watson return (error); 210195fab37eSRobert Watson } 210295fab37eSRobert Watson 210395fab37eSRobert Watson int 210495fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 210595fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 210695fab37eSRobert Watson { 210795fab37eSRobert Watson int error; 210895fab37eSRobert Watson 210995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 211095fab37eSRobert Watson 211195fab37eSRobert Watson if (!mac_enforce_fs) 211295fab37eSRobert Watson return (0); 211395fab37eSRobert Watson 211495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 211595fab37eSRobert Watson if (error) 211695fab37eSRobert Watson return (error); 211795fab37eSRobert Watson 211895fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 211995fab37eSRobert Watson attrnamespace, name, uio); 212095fab37eSRobert Watson return (error); 212195fab37eSRobert Watson } 212295fab37eSRobert Watson 212395fab37eSRobert Watson int 212495fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 212595fab37eSRobert Watson { 212695fab37eSRobert Watson int error; 212795fab37eSRobert Watson 212895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 212995fab37eSRobert Watson 213095fab37eSRobert Watson if (!mac_enforce_fs) 213195fab37eSRobert Watson return (0); 213295fab37eSRobert Watson 213395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 213495fab37eSRobert Watson if (error) 213595fab37eSRobert Watson return (error); 213695fab37eSRobert Watson 213795fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 213895fab37eSRobert Watson return (error); 213995fab37eSRobert Watson } 214095fab37eSRobert Watson 214195fab37eSRobert Watson int 214295fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 214395fab37eSRobert Watson { 214495fab37eSRobert Watson int error; 214595fab37eSRobert Watson 214695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 214795fab37eSRobert Watson 214895fab37eSRobert Watson if (!mac_enforce_fs) 214995fab37eSRobert Watson return (0); 215095fab37eSRobert Watson 215195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 215295fab37eSRobert Watson if (error) 215395fab37eSRobert Watson return (error); 215495fab37eSRobert Watson 215595fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 215695fab37eSRobert Watson return (error); 215795fab37eSRobert Watson } 215895fab37eSRobert Watson 215995fab37eSRobert Watson int 216095fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 216195fab37eSRobert Watson gid_t gid) 216295fab37eSRobert Watson { 216395fab37eSRobert Watson int error; 216495fab37eSRobert Watson 216595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 216695fab37eSRobert Watson 216795fab37eSRobert Watson if (!mac_enforce_fs) 216895fab37eSRobert Watson return (0); 216995fab37eSRobert Watson 217095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 217195fab37eSRobert Watson if (error) 217295fab37eSRobert Watson return (error); 217395fab37eSRobert Watson 217495fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 217595fab37eSRobert Watson return (error); 217695fab37eSRobert Watson } 217795fab37eSRobert Watson 217895fab37eSRobert Watson int 217995fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 218095fab37eSRobert Watson struct timespec atime, struct timespec mtime) 218195fab37eSRobert Watson { 218295fab37eSRobert Watson int error; 218395fab37eSRobert Watson 218495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 218595fab37eSRobert Watson 218695fab37eSRobert Watson if (!mac_enforce_fs) 218795fab37eSRobert Watson return (0); 218895fab37eSRobert Watson 218995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 219095fab37eSRobert Watson if (error) 219195fab37eSRobert Watson return (error); 219295fab37eSRobert Watson 219395fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 219495fab37eSRobert Watson mtime); 219595fab37eSRobert Watson return (error); 219695fab37eSRobert Watson } 219795fab37eSRobert Watson 219895fab37eSRobert Watson int 2199177142e4SRobert Watson mac_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 2200177142e4SRobert Watson struct vnode *vp) 220195fab37eSRobert Watson { 220295fab37eSRobert Watson int error; 220395fab37eSRobert Watson 220495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 220595fab37eSRobert Watson 220695fab37eSRobert Watson if (!mac_enforce_fs) 220795fab37eSRobert Watson return (0); 220895fab37eSRobert Watson 2209177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 221095fab37eSRobert Watson if (error) 221195fab37eSRobert Watson return (error); 221295fab37eSRobert Watson 2213177142e4SRobert Watson MAC_CHECK(check_vnode_stat, active_cred, file_cred, vp, 2214177142e4SRobert Watson &vp->v_label); 221595fab37eSRobert Watson return (error); 221695fab37eSRobert Watson } 221795fab37eSRobert Watson 22187f724f8bSRobert Watson int 2219177142e4SRobert Watson mac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred, 2220177142e4SRobert Watson struct vnode *vp) 22217f724f8bSRobert Watson { 22227f724f8bSRobert Watson int error; 22237f724f8bSRobert Watson 22247f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 22257f724f8bSRobert Watson 22267f724f8bSRobert Watson if (!mac_enforce_fs) 22277f724f8bSRobert Watson return (0); 22287f724f8bSRobert Watson 2229177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 22307f724f8bSRobert Watson if (error) 22317f724f8bSRobert Watson return (error); 22327f724f8bSRobert Watson 2233177142e4SRobert Watson MAC_CHECK(check_vnode_write, active_cred, file_cred, vp, 2234177142e4SRobert Watson &vp->v_label); 22357f724f8bSRobert Watson 22367f724f8bSRobert Watson return (error); 22377f724f8bSRobert Watson } 22387f724f8bSRobert Watson 223995fab37eSRobert Watson /* 224095fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 224195fab37eSRobert Watson * permission allowed for each object type we know about in its 224295fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 224395fab37eSRobert Watson * know) when necessary. The process lock is not held here. 224495fab37eSRobert Watson */ 224595fab37eSRobert Watson static void 224695fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 224795fab37eSRobert Watson { 224895fab37eSRobert Watson 224995fab37eSRobert Watson /* XXX freeze all other threads */ 225095fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 225195fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 225295fab37eSRobert Watson /* XXX allow other threads to continue */ 225395fab37eSRobert Watson } 225495fab37eSRobert Watson 225595fab37eSRobert Watson static __inline const char * 225695fab37eSRobert Watson prot2str(vm_prot_t prot) 225795fab37eSRobert Watson { 225895fab37eSRobert Watson 225995fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 226095fab37eSRobert Watson case VM_PROT_READ: 226195fab37eSRobert Watson return ("r--"); 226295fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 226395fab37eSRobert Watson return ("rw-"); 226495fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 226595fab37eSRobert Watson return ("r-x"); 226695fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 226795fab37eSRobert Watson return ("rwx"); 226895fab37eSRobert Watson case VM_PROT_WRITE: 226995fab37eSRobert Watson return ("-w-"); 227095fab37eSRobert Watson case VM_PROT_EXECUTE: 227195fab37eSRobert Watson return ("--x"); 227295fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 227395fab37eSRobert Watson return ("-wx"); 227495fab37eSRobert Watson default: 227595fab37eSRobert Watson return ("---"); 227695fab37eSRobert Watson } 227795fab37eSRobert Watson } 227895fab37eSRobert Watson 227995fab37eSRobert Watson static void 228095fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 228195fab37eSRobert Watson struct vm_map *map) 228295fab37eSRobert Watson { 228395fab37eSRobert Watson struct vm_map_entry *vme; 228495fab37eSRobert Watson vm_prot_t result, revokeperms; 228595fab37eSRobert Watson vm_object_t object; 228695fab37eSRobert Watson vm_ooffset_t offset; 228795fab37eSRobert Watson struct vnode *vp; 228895fab37eSRobert Watson 2289c0f39905SRobert Watson if (!mac_mmap_revocation) 2290c0f39905SRobert Watson return; 2291c0f39905SRobert Watson 229295fab37eSRobert Watson vm_map_lock_read(map); 229395fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 229495fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 229595fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 229695fab37eSRobert Watson vme->object.sub_map); 229795fab37eSRobert Watson continue; 229895fab37eSRobert Watson } 229995fab37eSRobert Watson /* 230095fab37eSRobert Watson * Skip over entries that obviously are not shared. 230195fab37eSRobert Watson */ 230295fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 230395fab37eSRobert Watson !vme->max_protection) 230495fab37eSRobert Watson continue; 230595fab37eSRobert Watson /* 230695fab37eSRobert Watson * Drill down to the deepest backing object. 230795fab37eSRobert Watson */ 230895fab37eSRobert Watson offset = vme->offset; 230995fab37eSRobert Watson object = vme->object.vm_object; 231095fab37eSRobert Watson if (object == NULL) 231195fab37eSRobert Watson continue; 231295fab37eSRobert Watson while (object->backing_object != NULL) { 231395fab37eSRobert Watson object = object->backing_object; 231495fab37eSRobert Watson offset += object->backing_object_offset; 231595fab37eSRobert Watson } 231695fab37eSRobert Watson /* 231795fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 231895fab37eSRobert Watson * by the MAC system, so only things with backing by a 231995fab37eSRobert Watson * normal object (read: vnodes) are checked. 232095fab37eSRobert Watson */ 232195fab37eSRobert Watson if (object->type != OBJT_VNODE) 232295fab37eSRobert Watson continue; 232395fab37eSRobert Watson vp = (struct vnode *)object->handle; 232495fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 232595fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 232695fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 232795fab37eSRobert Watson /* 232895fab37eSRobert Watson * Find out what maximum protection we may be allowing 232995fab37eSRobert Watson * now but a policy needs to get removed. 233095fab37eSRobert Watson */ 233195fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 233295fab37eSRobert Watson if (!revokeperms) 233395fab37eSRobert Watson continue; 2334b656366bSBruce Evans printf("pid %ld: revoking %s perms from %#lx:%ld " 2335b656366bSBruce Evans "(max %s/cur %s)\n", (long)td->td_proc->p_pid, 2336b656366bSBruce Evans prot2str(revokeperms), (u_long)vme->start, 2337b656366bSBruce Evans (long)(vme->end - vme->start), 233895fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 233995fab37eSRobert Watson vm_map_lock_upgrade(map); 234095fab37eSRobert Watson /* 234195fab37eSRobert Watson * This is the really simple case: if a map has more 234295fab37eSRobert Watson * max_protection than is allowed, but it's not being 234395fab37eSRobert Watson * actually used (that is, the current protection is 234495fab37eSRobert Watson * still allowed), we can just wipe it out and do 234595fab37eSRobert Watson * nothing more. 234695fab37eSRobert Watson */ 234795fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 234895fab37eSRobert Watson vme->max_protection -= revokeperms; 234995fab37eSRobert Watson } else { 235095fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 235195fab37eSRobert Watson /* 235295fab37eSRobert Watson * In the more complicated case, flush out all 235395fab37eSRobert Watson * pending changes to the object then turn it 235495fab37eSRobert Watson * copy-on-write. 235595fab37eSRobert Watson */ 235695fab37eSRobert Watson vm_object_reference(object); 235795fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 235895fab37eSRobert Watson vm_object_page_clean(object, 235995fab37eSRobert Watson OFF_TO_IDX(offset), 236095fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 236195fab37eSRobert Watson PAGE_MASK), 236295fab37eSRobert Watson OBJPC_SYNC); 236395fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 236495fab37eSRobert Watson vm_object_deallocate(object); 236595fab37eSRobert Watson /* 236695fab37eSRobert Watson * Why bother if there's no read permissions 236795fab37eSRobert Watson * anymore? For the rest, we need to leave 236895fab37eSRobert Watson * the write permissions on for COW, or 236995fab37eSRobert Watson * remove them entirely if configured to. 237095fab37eSRobert Watson */ 237195fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 237295fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 237395fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 237495fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 237595fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 237695fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 237795fab37eSRobert Watson } 237895fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 237995fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 238095fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 238195fab37eSRobert Watson } 238295fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 238395fab37eSRobert Watson vme->max_protection = 0; 238495fab37eSRobert Watson vme->protection = 0; 238595fab37eSRobert Watson } 238695fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 238795fab37eSRobert Watson vme->protection & ~revokeperms); 238895fab37eSRobert Watson vm_map_simplify_entry(map, vme); 238995fab37eSRobert Watson } 239095fab37eSRobert Watson vm_map_lock_downgrade(map); 239195fab37eSRobert Watson } 239295fab37eSRobert Watson vm_map_unlock_read(map); 239395fab37eSRobert Watson } 239495fab37eSRobert Watson 239595fab37eSRobert Watson /* 239695fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 239795fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 239895fab37eSRobert Watson * buffer cache. 239995fab37eSRobert Watson */ 240095fab37eSRobert Watson static void 240195fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 240295fab37eSRobert Watson { 240395fab37eSRobert Watson 240495fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 240595fab37eSRobert Watson } 240695fab37eSRobert Watson 240795fab37eSRobert Watson void 240895fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 240995fab37eSRobert Watson { 241095fab37eSRobert Watson 241195fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 241295fab37eSRobert Watson } 241395fab37eSRobert Watson 241495fab37eSRobert Watson void 241595fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 241695fab37eSRobert Watson { 241795fab37eSRobert Watson 241895fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 241995fab37eSRobert Watson } 242095fab37eSRobert Watson 242195fab37eSRobert Watson void 242295fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 242395fab37eSRobert Watson { 242495fab37eSRobert Watson 242595fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 242695fab37eSRobert Watson } 242795fab37eSRobert Watson 242895fab37eSRobert Watson void 242995fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 243095fab37eSRobert Watson { 243195fab37eSRobert Watson 243295fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 243395fab37eSRobert Watson } 243495fab37eSRobert Watson 243595fab37eSRobert Watson void 243695fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 243795fab37eSRobert Watson { 243895fab37eSRobert Watson 243995fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 244095fab37eSRobert Watson } 244195fab37eSRobert Watson 244295fab37eSRobert Watson void 244395fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 244495fab37eSRobert Watson struct socket *newsocket) 244595fab37eSRobert Watson { 244695fab37eSRobert Watson 244795fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 244895fab37eSRobert Watson newsocket, &newsocket->so_label); 244995fab37eSRobert Watson } 245095fab37eSRobert Watson 245195fab37eSRobert Watson static void 245295fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 245395fab37eSRobert Watson struct label *newlabel) 245495fab37eSRobert Watson { 245595fab37eSRobert Watson 245695fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 245795fab37eSRobert Watson } 245895fab37eSRobert Watson 245995fab37eSRobert Watson static void 246095fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 246195fab37eSRobert Watson { 246295fab37eSRobert Watson 246395fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 246495fab37eSRobert Watson } 246595fab37eSRobert Watson 246695fab37eSRobert Watson void 246795fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 246895fab37eSRobert Watson { 246995fab37eSRobert Watson 247095fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 247195fab37eSRobert Watson socket, &socket->so_peerlabel); 247295fab37eSRobert Watson } 247395fab37eSRobert Watson 247495fab37eSRobert Watson void 247595fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 247695fab37eSRobert Watson struct socket *newsocket) 247795fab37eSRobert Watson { 247895fab37eSRobert Watson 247995fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 248095fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 248195fab37eSRobert Watson } 248295fab37eSRobert Watson 248395fab37eSRobert Watson void 248495fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 248595fab37eSRobert Watson { 248695fab37eSRobert Watson 248795fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 248895fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 248995fab37eSRobert Watson } 249095fab37eSRobert Watson 249195fab37eSRobert Watson void 249295fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 249395fab37eSRobert Watson { 249495fab37eSRobert Watson 249595fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 249695fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 249795fab37eSRobert Watson } 249895fab37eSRobert Watson 249995fab37eSRobert Watson void 250095fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 250195fab37eSRobert Watson { 250295fab37eSRobert Watson 250395fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 250495fab37eSRobert Watson &ipq->ipq_label); 250595fab37eSRobert Watson } 250695fab37eSRobert Watson 250795fab37eSRobert Watson void 250895fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 250995fab37eSRobert Watson { 251095fab37eSRobert Watson 251195fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 251295fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 251395fab37eSRobert Watson } 251495fab37eSRobert Watson 251595fab37eSRobert Watson void 251695fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 251795fab37eSRobert Watson { 251895fab37eSRobert Watson 251995fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 252095fab37eSRobert Watson &mbuf->m_pkthdr.label); 252195fab37eSRobert Watson } 252295fab37eSRobert Watson 252395fab37eSRobert Watson void 252495fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 252595fab37eSRobert Watson { 252695fab37eSRobert Watson 252795fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 252895fab37eSRobert Watson &mbuf->m_pkthdr.label); 252995fab37eSRobert Watson } 253095fab37eSRobert Watson 253195fab37eSRobert Watson void 253295fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 253395fab37eSRobert Watson { 253495fab37eSRobert Watson 253595fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 253695fab37eSRobert Watson &mbuf->m_pkthdr.label); 253795fab37eSRobert Watson } 253895fab37eSRobert Watson 253995fab37eSRobert Watson void 254095fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 254195fab37eSRobert Watson struct mbuf *newmbuf) 254295fab37eSRobert Watson { 254395fab37eSRobert Watson 254495fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 254595fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 254695fab37eSRobert Watson &newmbuf->m_pkthdr.label); 254795fab37eSRobert Watson } 254895fab37eSRobert Watson 254995fab37eSRobert Watson void 255095fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 255195fab37eSRobert Watson { 255295fab37eSRobert Watson 255395fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 255495fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 255595fab37eSRobert Watson } 255695fab37eSRobert Watson 255795fab37eSRobert Watson int 255895fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 255995fab37eSRobert Watson { 256095fab37eSRobert Watson int result; 256195fab37eSRobert Watson 256295fab37eSRobert Watson result = 1; 256395fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 256495fab37eSRobert Watson ipq, &ipq->ipq_label); 256595fab37eSRobert Watson 256695fab37eSRobert Watson return (result); 256795fab37eSRobert Watson } 256895fab37eSRobert Watson 256995fab37eSRobert Watson void 257095fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 257195fab37eSRobert Watson { 257295fab37eSRobert Watson 257395fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 257495fab37eSRobert Watson &ipq->ipq_label); 257595fab37eSRobert Watson } 257695fab37eSRobert Watson 257795fab37eSRobert Watson void 257895fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 257995fab37eSRobert Watson { 258095fab37eSRobert Watson 258195fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 258295fab37eSRobert Watson &mbuf->m_pkthdr.label); 258395fab37eSRobert Watson } 258495fab37eSRobert Watson 258595fab37eSRobert Watson void 258695fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 258795fab37eSRobert Watson { 258895fab37eSRobert Watson 258995fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 259095fab37eSRobert Watson &mp->mnt_fslabel); 259195fab37eSRobert Watson } 259295fab37eSRobert Watson 259395fab37eSRobert Watson void 259495fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 259595fab37eSRobert Watson { 259695fab37eSRobert Watson 259795fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 259895fab37eSRobert Watson &mp->mnt_fslabel); 259995fab37eSRobert Watson } 260095fab37eSRobert Watson 260195fab37eSRobert Watson int 260295fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 260395fab37eSRobert Watson { 260495fab37eSRobert Watson int error; 260595fab37eSRobert Watson 260695fab37eSRobert Watson if (!mac_enforce_network) 260795fab37eSRobert Watson return (0); 260895fab37eSRobert Watson 260995fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 261095fab37eSRobert Watson &ifnet->if_label); 261195fab37eSRobert Watson 261295fab37eSRobert Watson return (error); 261395fab37eSRobert Watson } 261495fab37eSRobert Watson 261595fab37eSRobert Watson static int 261695fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 261795fab37eSRobert Watson { 261895fab37eSRobert Watson int error; 261995fab37eSRobert Watson 262095fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 262195fab37eSRobert Watson 262295fab37eSRobert Watson return (error); 262395fab37eSRobert Watson } 262495fab37eSRobert Watson 262595fab37eSRobert Watson int 262695fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 262795fab37eSRobert Watson { 262895fab37eSRobert Watson int error; 262995fab37eSRobert Watson 263095fab37eSRobert Watson if (!mac_enforce_process) 263195fab37eSRobert Watson return (0); 263295fab37eSRobert Watson 263395fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 263495fab37eSRobert Watson 263595fab37eSRobert Watson return (error); 263695fab37eSRobert Watson } 263795fab37eSRobert Watson 263895fab37eSRobert Watson int 263995fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 264095fab37eSRobert Watson { 264195fab37eSRobert Watson int error; 264295fab37eSRobert Watson 264395fab37eSRobert Watson if (!mac_enforce_network) 264495fab37eSRobert Watson return (0); 264595fab37eSRobert Watson 264695fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 264795fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 264895fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 264995fab37eSRobert Watson ifnet->if_unit); 265095fab37eSRobert Watson 265195fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 265295fab37eSRobert Watson &mbuf->m_pkthdr.label); 265395fab37eSRobert Watson 265495fab37eSRobert Watson return (error); 265595fab37eSRobert Watson } 265695fab37eSRobert Watson 265795fab37eSRobert Watson int 265895fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 265995fab37eSRobert Watson { 266095fab37eSRobert Watson int error; 266195fab37eSRobert Watson 266295fab37eSRobert Watson if (!mac_enforce_fs) 266395fab37eSRobert Watson return (0); 266495fab37eSRobert Watson 266595fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 266695fab37eSRobert Watson 266795fab37eSRobert Watson return (error); 266895fab37eSRobert Watson } 266995fab37eSRobert Watson 267095fab37eSRobert Watson int 267195fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 267295fab37eSRobert Watson void *data) 267395fab37eSRobert Watson { 267495fab37eSRobert Watson int error; 267595fab37eSRobert Watson 26761aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26771aa37f53SRobert Watson 26781aa37f53SRobert Watson if (!mac_enforce_pipe) 26791aa37f53SRobert Watson return (0); 26801aa37f53SRobert Watson 268195fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 268295fab37eSRobert Watson 268395fab37eSRobert Watson return (error); 268495fab37eSRobert Watson } 268595fab37eSRobert Watson 268695fab37eSRobert Watson int 2687c024c3eeSRobert Watson mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe) 268895fab37eSRobert Watson { 268995fab37eSRobert Watson int error; 269095fab37eSRobert Watson 26911aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26921aa37f53SRobert Watson 26931aa37f53SRobert Watson if (!mac_enforce_pipe) 26941aa37f53SRobert Watson return (0); 26951aa37f53SRobert Watson 2696c024c3eeSRobert Watson MAC_CHECK(check_pipe_poll, cred, pipe, pipe->pipe_label); 2697c024c3eeSRobert Watson 2698c024c3eeSRobert Watson return (error); 2699c024c3eeSRobert Watson } 2700c024c3eeSRobert Watson 2701c024c3eeSRobert Watson int 2702c024c3eeSRobert Watson mac_check_pipe_read(struct ucred *cred, struct pipe *pipe) 2703c024c3eeSRobert Watson { 2704c024c3eeSRobert Watson int error; 2705c024c3eeSRobert Watson 27061aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27071aa37f53SRobert Watson 27081aa37f53SRobert Watson if (!mac_enforce_pipe) 27091aa37f53SRobert Watson return (0); 27101aa37f53SRobert Watson 2711c024c3eeSRobert Watson MAC_CHECK(check_pipe_read, cred, pipe, pipe->pipe_label); 271295fab37eSRobert Watson 271395fab37eSRobert Watson return (error); 271495fab37eSRobert Watson } 271595fab37eSRobert Watson 271695fab37eSRobert Watson static int 271795fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 271895fab37eSRobert Watson struct label *newlabel) 271995fab37eSRobert Watson { 272095fab37eSRobert Watson int error; 272195fab37eSRobert Watson 27221aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27231aa37f53SRobert Watson 27241aa37f53SRobert Watson if (!mac_enforce_pipe) 27251aa37f53SRobert Watson return (0); 27261aa37f53SRobert Watson 272795fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 272895fab37eSRobert Watson 272995fab37eSRobert Watson return (error); 273095fab37eSRobert Watson } 273195fab37eSRobert Watson 273295fab37eSRobert Watson int 2733c024c3eeSRobert Watson mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe) 2734c024c3eeSRobert Watson { 2735c024c3eeSRobert Watson int error; 2736c024c3eeSRobert Watson 27371aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27381aa37f53SRobert Watson 27391aa37f53SRobert Watson if (!mac_enforce_pipe) 27401aa37f53SRobert Watson return (0); 27411aa37f53SRobert Watson 2742c024c3eeSRobert Watson MAC_CHECK(check_pipe_stat, cred, pipe, pipe->pipe_label); 2743c024c3eeSRobert Watson 2744c024c3eeSRobert Watson return (error); 2745c024c3eeSRobert Watson } 2746c024c3eeSRobert Watson 2747c024c3eeSRobert Watson int 2748c024c3eeSRobert Watson mac_check_pipe_write(struct ucred *cred, struct pipe *pipe) 2749c024c3eeSRobert Watson { 2750c024c3eeSRobert Watson int error; 2751c024c3eeSRobert Watson 27521aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27531aa37f53SRobert Watson 27541aa37f53SRobert Watson if (!mac_enforce_pipe) 27551aa37f53SRobert Watson return (0); 27561aa37f53SRobert Watson 2757c024c3eeSRobert Watson MAC_CHECK(check_pipe_write, cred, pipe, pipe->pipe_label); 2758c024c3eeSRobert Watson 2759c024c3eeSRobert Watson return (error); 2760c024c3eeSRobert Watson } 2761c024c3eeSRobert Watson 2762c024c3eeSRobert Watson int 276395fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 276495fab37eSRobert Watson { 276595fab37eSRobert Watson int error; 276695fab37eSRobert Watson 2767b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2768b12baf55SRobert Watson 276995fab37eSRobert Watson if (!mac_enforce_process) 277095fab37eSRobert Watson return (0); 277195fab37eSRobert Watson 277295fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 277395fab37eSRobert Watson 277495fab37eSRobert Watson return (error); 277595fab37eSRobert Watson } 277695fab37eSRobert Watson 277795fab37eSRobert Watson int 277895fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 277995fab37eSRobert Watson { 278095fab37eSRobert Watson int error; 278195fab37eSRobert Watson 2782b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2783b12baf55SRobert Watson 278495fab37eSRobert Watson if (!mac_enforce_process) 278595fab37eSRobert Watson return (0); 278695fab37eSRobert Watson 278795fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 278895fab37eSRobert Watson 278995fab37eSRobert Watson return (error); 279095fab37eSRobert Watson } 279195fab37eSRobert Watson 279295fab37eSRobert Watson int 279395fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 279495fab37eSRobert Watson { 279595fab37eSRobert Watson int error; 279695fab37eSRobert Watson 2797b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2798b12baf55SRobert Watson 279995fab37eSRobert Watson if (!mac_enforce_process) 280095fab37eSRobert Watson return (0); 280195fab37eSRobert Watson 280295fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 280395fab37eSRobert Watson 280495fab37eSRobert Watson return (error); 280595fab37eSRobert Watson } 280695fab37eSRobert Watson 280795fab37eSRobert Watson int 280895fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 280995fab37eSRobert Watson struct sockaddr *sockaddr) 281095fab37eSRobert Watson { 281195fab37eSRobert Watson int error; 281295fab37eSRobert Watson 281395fab37eSRobert Watson if (!mac_enforce_socket) 281495fab37eSRobert Watson return (0); 281595fab37eSRobert Watson 281695fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 281795fab37eSRobert Watson sockaddr); 281895fab37eSRobert Watson 281995fab37eSRobert Watson return (error); 282095fab37eSRobert Watson } 282195fab37eSRobert Watson 282295fab37eSRobert Watson int 282395fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 282495fab37eSRobert Watson struct sockaddr *sockaddr) 282595fab37eSRobert Watson { 282695fab37eSRobert Watson int error; 282795fab37eSRobert Watson 282895fab37eSRobert Watson if (!mac_enforce_socket) 282995fab37eSRobert Watson return (0); 283095fab37eSRobert Watson 283195fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 283295fab37eSRobert Watson sockaddr); 283395fab37eSRobert Watson 283495fab37eSRobert Watson return (error); 283595fab37eSRobert Watson } 283695fab37eSRobert Watson 283795fab37eSRobert Watson int 2838d61198e4SRobert Watson mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2839d61198e4SRobert Watson { 2840d61198e4SRobert Watson int error; 2841d61198e4SRobert Watson 2842d61198e4SRobert Watson if (!mac_enforce_socket) 2843d61198e4SRobert Watson return (0); 2844d61198e4SRobert Watson 2845d61198e4SRobert Watson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2846d61198e4SRobert Watson &mbuf->m_pkthdr.label); 2847d61198e4SRobert Watson 2848d61198e4SRobert Watson return (error); 2849d61198e4SRobert Watson } 2850d61198e4SRobert Watson 2851d61198e4SRobert Watson int 285295fab37eSRobert Watson mac_check_socket_listen(struct ucred *cred, struct socket *socket) 285395fab37eSRobert Watson { 285495fab37eSRobert Watson int error; 285595fab37eSRobert Watson 285695fab37eSRobert Watson if (!mac_enforce_socket) 285795fab37eSRobert Watson return (0); 285895fab37eSRobert Watson 285995fab37eSRobert Watson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 286095fab37eSRobert Watson return (error); 286195fab37eSRobert Watson } 286295fab37eSRobert Watson 286395fab37eSRobert Watson static int 286495fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 286595fab37eSRobert Watson struct label *newlabel) 286695fab37eSRobert Watson { 286795fab37eSRobert Watson int error; 286895fab37eSRobert Watson 286995fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 287095fab37eSRobert Watson newlabel); 287195fab37eSRobert Watson 287295fab37eSRobert Watson return (error); 287395fab37eSRobert Watson } 287495fab37eSRobert Watson 287595fab37eSRobert Watson int 287695fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 287795fab37eSRobert Watson { 287895fab37eSRobert Watson int error; 287995fab37eSRobert Watson 288095fab37eSRobert Watson if (!mac_enforce_socket) 288195fab37eSRobert Watson return (0); 288295fab37eSRobert Watson 288395fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 288495fab37eSRobert Watson 288595fab37eSRobert Watson return (error); 288695fab37eSRobert Watson } 288795fab37eSRobert Watson 288895fab37eSRobert Watson int 288995fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 289095fab37eSRobert Watson struct ifnet *ifnet) 289195fab37eSRobert Watson { 289295fab37eSRobert Watson struct mac label; 289395fab37eSRobert Watson int error; 289495fab37eSRobert Watson 289595fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 289695fab37eSRobert Watson if (error) 289795fab37eSRobert Watson return (error); 289895fab37eSRobert Watson 289995fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 290095fab37eSRobert Watson } 290195fab37eSRobert Watson 290295fab37eSRobert Watson int 290395fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 290495fab37eSRobert Watson struct ifnet *ifnet) 290595fab37eSRobert Watson { 290695fab37eSRobert Watson struct mac newlabel; 290795fab37eSRobert Watson struct label intlabel; 290895fab37eSRobert Watson int error; 290995fab37eSRobert Watson 291095fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 291195fab37eSRobert Watson if (error) 291295fab37eSRobert Watson return (error); 291395fab37eSRobert Watson 291495fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 291595fab37eSRobert Watson if (error) 291695fab37eSRobert Watson return (error); 291795fab37eSRobert Watson 291895fab37eSRobert Watson /* 291995fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 292095fab37eSRobert Watson * policies impose this check themselves if required by the 292195fab37eSRobert Watson * policy. Eventually, this should go away. 292295fab37eSRobert Watson */ 292395fab37eSRobert Watson error = suser_cred(cred, 0); 292495fab37eSRobert Watson if (error) 292595fab37eSRobert Watson goto out; 292695fab37eSRobert Watson 292795fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 292895fab37eSRobert Watson &intlabel); 292995fab37eSRobert Watson if (error) 293095fab37eSRobert Watson goto out; 293195fab37eSRobert Watson 293295fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 293395fab37eSRobert Watson 293495fab37eSRobert Watson out: 293595fab37eSRobert Watson mac_destroy_temp(&intlabel); 293695fab37eSRobert Watson return (error); 293795fab37eSRobert Watson } 293895fab37eSRobert Watson 293995fab37eSRobert Watson void 294095fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 294195fab37eSRobert Watson { 294295fab37eSRobert Watson 294395fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 294495fab37eSRobert Watson } 294595fab37eSRobert Watson 294695fab37eSRobert Watson void 294795fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 294895fab37eSRobert Watson { 294995fab37eSRobert Watson 295095fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 295195fab37eSRobert Watson } 295295fab37eSRobert Watson 295374e62b1bSRobert Watson void 295474e62b1bSRobert Watson mac_create_devfs_symlink(struct ucred *cred, struct devfs_dirent *dd, 295574e62b1bSRobert Watson struct devfs_dirent *de) 295674e62b1bSRobert Watson { 295774e62b1bSRobert Watson 295874e62b1bSRobert Watson MAC_PERFORM(create_devfs_symlink, cred, dd, &dd->de_label, de, 295974e62b1bSRobert Watson &de->de_label); 296074e62b1bSRobert Watson } 296174e62b1bSRobert Watson 296295fab37eSRobert Watson static int 296395fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 296495fab37eSRobert Watson { 296595fab37eSRobert Watson int error; 296695fab37eSRobert Watson 296795fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 296895fab37eSRobert Watson 296995fab37eSRobert Watson return (error); 297095fab37eSRobert Watson } 297195fab37eSRobert Watson 297295fab37eSRobert Watson void 297395fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 297495fab37eSRobert Watson struct devfs_dirent *de) 297595fab37eSRobert Watson { 297695fab37eSRobert Watson 297795fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 297895fab37eSRobert Watson &de->de_label); 297995fab37eSRobert Watson } 298095fab37eSRobert Watson 298195fab37eSRobert Watson /* 298295fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 298395fab37eSRobert Watson */ 298495fab37eSRobert Watson void 298595fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 298695fab37eSRobert Watson struct vnode *child) 298795fab37eSRobert Watson { 298895fab37eSRobert Watson int error; 298995fab37eSRobert Watson 299095fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 299195fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 299295fab37eSRobert Watson 299395fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 299495fab37eSRobert Watson if (error) { 299595fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 299695fab37eSRobert Watson error); 299795fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 299895fab37eSRobert Watson } 299995fab37eSRobert Watson 300095fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 300195fab37eSRobert Watson &child->v_label); 300295fab37eSRobert Watson } 300395fab37eSRobert Watson 300495fab37eSRobert Watson int 300595fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 300695fab37eSRobert Watson struct mac *extmac) 300795fab37eSRobert Watson { 300895fab37eSRobert Watson struct label intlabel; 300995fab37eSRobert Watson int error; 301095fab37eSRobert Watson 301195fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 301295fab37eSRobert Watson if (error) 301395fab37eSRobert Watson return (error); 301495fab37eSRobert Watson 301595fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 301695fab37eSRobert Watson if (error) { 301795fab37eSRobert Watson mac_destroy_temp(&intlabel); 301895fab37eSRobert Watson return (error); 301995fab37eSRobert Watson } 302095fab37eSRobert Watson 302195fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 302295fab37eSRobert Watson 302395fab37eSRobert Watson mac_destroy_temp(&intlabel); 302495fab37eSRobert Watson return (0); 302595fab37eSRobert Watson } 302695fab37eSRobert Watson 302795fab37eSRobert Watson int 302895fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 302995fab37eSRobert Watson { 303095fab37eSRobert Watson int error; 303195fab37eSRobert Watson 30321aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 30331aa37f53SRobert Watson 303495fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 303595fab37eSRobert Watson if (error) 303695fab37eSRobert Watson return (error); 303795fab37eSRobert Watson 303895fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 303995fab37eSRobert Watson 304095fab37eSRobert Watson return (0); 304195fab37eSRobert Watson } 304295fab37eSRobert Watson 304395fab37eSRobert Watson int 304495fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 304595fab37eSRobert Watson struct mac *extmac) 304695fab37eSRobert Watson { 304795fab37eSRobert Watson 304895fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 304995fab37eSRobert Watson } 305095fab37eSRobert Watson 305195fab37eSRobert Watson int 305295fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 305395fab37eSRobert Watson struct mac *extmac) 305495fab37eSRobert Watson { 305595fab37eSRobert Watson 305695fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 305795fab37eSRobert Watson } 305895fab37eSRobert Watson 305995fab37eSRobert Watson /* 306095fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 306195fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 306295fab37eSRobert Watson * extended attributes. 306395fab37eSRobert Watson */ 306495fab37eSRobert Watson int 306595fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 306695fab37eSRobert Watson { 306795fab37eSRobert Watson struct vnode *vp = ap->a_vp; 306895fab37eSRobert Watson struct label *intlabel = ap->a_label; 306995fab37eSRobert Watson struct mac extmac; 307095fab37eSRobert Watson int error; 307195fab37eSRobert Watson 307295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 307395fab37eSRobert Watson 307495fab37eSRobert Watson /* 307595fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 307695fab37eSRobert Watson * Be particularly careful to avoid race conditions, 307795fab37eSRobert Watson * consistency problems, and stability problems when 307895fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 307995fab37eSRobert Watson * the ability to write multiple EAs on the same file in 308095fab37eSRobert Watson * a single transaction, which the current EA interface 308195fab37eSRobert Watson * does not provide. 308295fab37eSRobert Watson */ 308395fab37eSRobert Watson 308495fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 308595fab37eSRobert Watson if (error) 308695fab37eSRobert Watson return (error); 308795fab37eSRobert Watson 308895fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 308995fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 309095fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 309195fab37eSRobert Watson if (error) 309295fab37eSRobert Watson return (error); 309395fab37eSRobert Watson 309495fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 309595fab37eSRobert Watson 3096e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 309795fab37eSRobert Watson 309895fab37eSRobert Watson return (0); 309995fab37eSRobert Watson } 310095fab37eSRobert Watson 310195fab37eSRobert Watson static int 310295fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 310395fab37eSRobert Watson { 310495fab37eSRobert Watson int error; 310595fab37eSRobert Watson 310695fab37eSRobert Watson if (vp->v_mount == NULL) { 310795fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 310806be2aaaSNate Lawson if (vp->v_type != VNON) 310906be2aaaSNate Lawson printf("vn_setlabel: null v_mount with non-VNON\n"); 311095fab37eSRobert Watson return (EBADF); 311195fab37eSRobert Watson } 311295fab37eSRobert Watson 311395fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 311495fab37eSRobert Watson return (EOPNOTSUPP); 311595fab37eSRobert Watson 311695fab37eSRobert Watson /* 311795fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 311895fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 311995fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 312095fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 312195fab37eSRobert Watson */ 312295fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 312395fab37eSRobert Watson if (error) 312495fab37eSRobert Watson return (error); 312595fab37eSRobert Watson 312695fab37eSRobert Watson /* 312795fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 312895fab37eSRobert Watson * decisions about who is and is not able to modify labels 312995fab37eSRobert Watson * and protections on files. This might not be right. We can't 313095fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 313195fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 313295fab37eSRobert Watson */ 313395fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 313495fab37eSRobert Watson if (error) 313595fab37eSRobert Watson return (error); 313695fab37eSRobert Watson 313795fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 313895fab37eSRobert Watson if (error) 313995fab37eSRobert Watson return (error); 314095fab37eSRobert Watson 314195fab37eSRobert Watson return (0); 314295fab37eSRobert Watson } 314395fab37eSRobert Watson 314495fab37eSRobert Watson /* 314595fab37eSRobert Watson * MPSAFE 314695fab37eSRobert Watson */ 314795fab37eSRobert Watson int 314895fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 314995fab37eSRobert Watson { 315095fab37eSRobert Watson struct mac extmac; 315195fab37eSRobert Watson int error; 315295fab37eSRobert Watson 315395fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 315495fab37eSRobert Watson if (error == 0) 315595fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 315695fab37eSRobert Watson 315795fab37eSRobert Watson return (error); 315895fab37eSRobert Watson } 315995fab37eSRobert Watson 316095fab37eSRobert Watson /* 316195fab37eSRobert Watson * MPSAFE 316295fab37eSRobert Watson */ 316395fab37eSRobert Watson int 316495fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 316595fab37eSRobert Watson { 316695fab37eSRobert Watson struct ucred *newcred, *oldcred; 316795fab37eSRobert Watson struct proc *p; 316895fab37eSRobert Watson struct mac extmac; 316995fab37eSRobert Watson struct label intlabel; 317095fab37eSRobert Watson int error; 317195fab37eSRobert Watson 317295fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 317395fab37eSRobert Watson if (error) 317495fab37eSRobert Watson return (error); 317595fab37eSRobert Watson 317695fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 317795fab37eSRobert Watson if (error) 317895fab37eSRobert Watson return (error); 317995fab37eSRobert Watson 318095fab37eSRobert Watson newcred = crget(); 318195fab37eSRobert Watson 318295fab37eSRobert Watson p = td->td_proc; 318395fab37eSRobert Watson PROC_LOCK(p); 318495fab37eSRobert Watson oldcred = p->p_ucred; 318595fab37eSRobert Watson 318695fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 318795fab37eSRobert Watson if (error) { 318895fab37eSRobert Watson PROC_UNLOCK(p); 318995fab37eSRobert Watson mac_destroy_temp(&intlabel); 319095fab37eSRobert Watson crfree(newcred); 319195fab37eSRobert Watson return (error); 319295fab37eSRobert Watson } 319395fab37eSRobert Watson 319495fab37eSRobert Watson setsugid(p); 319595fab37eSRobert Watson crcopy(newcred, oldcred); 319695fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 319795fab37eSRobert Watson p->p_ucred = newcred; 3198e5cb5e37SRobert Watson 3199e5cb5e37SRobert Watson /* 3200e5cb5e37SRobert Watson * Grab additional reference for use while revoking mmaps, prior 3201e5cb5e37SRobert Watson * to releasing the proc lock and sharing the cred. 3202e5cb5e37SRobert Watson */ 3203e5cb5e37SRobert Watson crhold(newcred); 320495fab37eSRobert Watson PROC_UNLOCK(p); 3205e5cb5e37SRobert Watson 320616140035SRobert Watson mtx_lock(&Giant); 3207e5cb5e37SRobert Watson mac_cred_mmapped_drop_perms(td, newcred); 320816140035SRobert Watson mtx_unlock(&Giant); 3209e5cb5e37SRobert Watson 3210e5cb5e37SRobert Watson crfree(newcred); /* Free revocation reference. */ 321195fab37eSRobert Watson crfree(oldcred); 321295fab37eSRobert Watson mac_destroy_temp(&intlabel); 321395fab37eSRobert Watson return (0); 321495fab37eSRobert Watson } 321595fab37eSRobert Watson 321695fab37eSRobert Watson /* 321795fab37eSRobert Watson * MPSAFE 321895fab37eSRobert Watson */ 321995fab37eSRobert Watson int 322095fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 322195fab37eSRobert Watson { 322295fab37eSRobert Watson struct file *fp; 322395fab37eSRobert Watson struct mac extmac; 322495fab37eSRobert Watson struct vnode *vp; 322595fab37eSRobert Watson struct pipe *pipe; 322695fab37eSRobert Watson int error; 322795fab37eSRobert Watson 322895fab37eSRobert Watson mtx_lock(&Giant); 322995fab37eSRobert Watson 323095fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 323195fab37eSRobert Watson if (error) 323295fab37eSRobert Watson goto out; 323395fab37eSRobert Watson 323495fab37eSRobert Watson switch (fp->f_type) { 323595fab37eSRobert Watson case DTYPE_FIFO: 323695fab37eSRobert Watson case DTYPE_VNODE: 323795fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 323895fab37eSRobert Watson 323995fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 324095fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 324195fab37eSRobert Watson if (error == 0) 324295fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 324395fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 324495fab37eSRobert Watson break; 324595fab37eSRobert Watson case DTYPE_PIPE: 324695fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 324795fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 324895fab37eSRobert Watson break; 324995fab37eSRobert Watson default: 325095fab37eSRobert Watson error = EINVAL; 325195fab37eSRobert Watson } 325295fab37eSRobert Watson 325395fab37eSRobert Watson if (error == 0) 325495fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 325595fab37eSRobert Watson 325695fab37eSRobert Watson fdrop(fp, td); 325795fab37eSRobert Watson 325895fab37eSRobert Watson out: 325995fab37eSRobert Watson mtx_unlock(&Giant); 326095fab37eSRobert Watson return (error); 326195fab37eSRobert Watson } 326295fab37eSRobert Watson 326395fab37eSRobert Watson /* 326495fab37eSRobert Watson * MPSAFE 326595fab37eSRobert Watson */ 326695fab37eSRobert Watson int 326795fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 326895fab37eSRobert Watson { 326995fab37eSRobert Watson struct nameidata nd; 327095fab37eSRobert Watson struct mac extmac; 327195fab37eSRobert Watson int error; 327295fab37eSRobert Watson 327395fab37eSRobert Watson mtx_lock(&Giant); 327495fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 327595fab37eSRobert Watson SCARG(uap, path_p), td); 327695fab37eSRobert Watson error = namei(&nd); 327795fab37eSRobert Watson if (error) 327895fab37eSRobert Watson goto out; 327995fab37eSRobert Watson 328095fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 328195fab37eSRobert Watson if (error == 0) 328295fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 328395fab37eSRobert Watson NDFREE(&nd, 0); 328495fab37eSRobert Watson if (error) 328595fab37eSRobert Watson goto out; 328695fab37eSRobert Watson 328795fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 328895fab37eSRobert Watson 328995fab37eSRobert Watson out: 329095fab37eSRobert Watson mtx_unlock(&Giant); 329195fab37eSRobert Watson return (error); 329295fab37eSRobert Watson } 329395fab37eSRobert Watson 329495fab37eSRobert Watson /* 329595fab37eSRobert Watson * MPSAFE 329695fab37eSRobert Watson */ 329795fab37eSRobert Watson int 329895fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 329995fab37eSRobert Watson { 330095fab37eSRobert Watson struct file *fp; 330195fab37eSRobert Watson struct mac extmac; 330295fab37eSRobert Watson struct label intlabel; 330395fab37eSRobert Watson struct mount *mp; 330495fab37eSRobert Watson struct vnode *vp; 330595fab37eSRobert Watson struct pipe *pipe; 330695fab37eSRobert Watson int error; 330795fab37eSRobert Watson 330895fab37eSRobert Watson mtx_lock(&Giant); 330995fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 331095fab37eSRobert Watson if (error) 331195fab37eSRobert Watson goto out1; 331295fab37eSRobert Watson 331395fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 331495fab37eSRobert Watson if (error) 331595fab37eSRobert Watson goto out2; 331695fab37eSRobert Watson 331795fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 331895fab37eSRobert Watson if (error) 331995fab37eSRobert Watson goto out2; 332095fab37eSRobert Watson 332195fab37eSRobert Watson switch (fp->f_type) { 332295fab37eSRobert Watson case DTYPE_FIFO: 332395fab37eSRobert Watson case DTYPE_VNODE: 332495fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 332595fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 332695fab37eSRobert Watson if (error != 0) 332795fab37eSRobert Watson break; 332895fab37eSRobert Watson 332995fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 333095fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 333195fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 333295fab37eSRobert Watson vn_finished_write(mp); 333395fab37eSRobert Watson mac_destroy_temp(&intlabel); 333495fab37eSRobert Watson break; 333595fab37eSRobert Watson case DTYPE_PIPE: 333695fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 33371aa37f53SRobert Watson PIPE_LOCK(pipe); 333895fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 33391aa37f53SRobert Watson PIPE_UNLOCK(pipe); 334095fab37eSRobert Watson break; 334195fab37eSRobert Watson default: 334295fab37eSRobert Watson error = EINVAL; 334395fab37eSRobert Watson } 334495fab37eSRobert Watson 334595fab37eSRobert Watson out2: 334695fab37eSRobert Watson fdrop(fp, td); 334795fab37eSRobert Watson out1: 334895fab37eSRobert Watson mtx_unlock(&Giant); 334995fab37eSRobert Watson return (error); 335095fab37eSRobert Watson } 335195fab37eSRobert Watson 335295fab37eSRobert Watson /* 335395fab37eSRobert Watson * MPSAFE 335495fab37eSRobert Watson */ 335595fab37eSRobert Watson int 335695fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 335795fab37eSRobert Watson { 335895fab37eSRobert Watson struct nameidata nd; 335995fab37eSRobert Watson struct mac extmac; 336095fab37eSRobert Watson struct label intlabel; 336195fab37eSRobert Watson struct mount *mp; 336295fab37eSRobert Watson int error; 336395fab37eSRobert Watson 336495fab37eSRobert Watson mtx_lock(&Giant); 336595fab37eSRobert Watson 336695fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 336795fab37eSRobert Watson if (error) 336895fab37eSRobert Watson goto out; 336995fab37eSRobert Watson 337095fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 337195fab37eSRobert Watson if (error) 337295fab37eSRobert Watson goto out; 337395fab37eSRobert Watson 337495fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 337595fab37eSRobert Watson SCARG(uap, path_p), td); 337695fab37eSRobert Watson error = namei(&nd); 337795fab37eSRobert Watson if (error) 337895fab37eSRobert Watson goto out2; 337995fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 338095fab37eSRobert Watson if (error) 338195fab37eSRobert Watson goto out2; 338295fab37eSRobert Watson 338395fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 338495fab37eSRobert Watson 338595fab37eSRobert Watson vn_finished_write(mp); 338695fab37eSRobert Watson out2: 338795fab37eSRobert Watson mac_destroy_temp(&intlabel); 338895fab37eSRobert Watson NDFREE(&nd, 0); 338995fab37eSRobert Watson out: 339095fab37eSRobert Watson mtx_unlock(&Giant); 339195fab37eSRobert Watson return (error); 339295fab37eSRobert Watson } 339395fab37eSRobert Watson 339427f2eac7SRobert Watson int 339527f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 339627f2eac7SRobert Watson { 339727f2eac7SRobert Watson struct mac_policy_conf *mpc; 339827f2eac7SRobert Watson char target[MAC_MAX_POLICY_NAME]; 339927f2eac7SRobert Watson int error; 340027f2eac7SRobert Watson 340127f2eac7SRobert Watson error = copyinstr(SCARG(uap, policy), target, sizeof(target), NULL); 340227f2eac7SRobert Watson if (error) 340327f2eac7SRobert Watson return (error); 340427f2eac7SRobert Watson 340527f2eac7SRobert Watson error = ENOSYS; 340627f2eac7SRobert Watson MAC_POLICY_LIST_BUSY(); 340727f2eac7SRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { 340827f2eac7SRobert Watson if (strcmp(mpc->mpc_name, target) == 0 && 340927f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall != NULL) { 341027f2eac7SRobert Watson error = mpc->mpc_ops->mpo_syscall(td, 341127f2eac7SRobert Watson SCARG(uap, call), SCARG(uap, arg)); 341227f2eac7SRobert Watson goto out; 341327f2eac7SRobert Watson } 341427f2eac7SRobert Watson } 341527f2eac7SRobert Watson 341627f2eac7SRobert Watson out: 341727f2eac7SRobert Watson MAC_POLICY_LIST_UNBUSY(); 341827f2eac7SRobert Watson return (error); 341927f2eac7SRobert Watson } 342027f2eac7SRobert Watson 342195fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 342295fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 342395fab37eSRobert Watson 342495fab37eSRobert Watson #else /* !MAC */ 34257bc82500SRobert Watson 34267bc82500SRobert Watson int 34277bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 34287bc82500SRobert Watson { 34297bc82500SRobert Watson 34307bc82500SRobert Watson return (ENOSYS); 34317bc82500SRobert Watson } 34327bc82500SRobert Watson 34337bc82500SRobert Watson int 34347bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 34357bc82500SRobert Watson { 34367bc82500SRobert Watson 34377bc82500SRobert Watson return (ENOSYS); 34387bc82500SRobert Watson } 34397bc82500SRobert Watson 34407bc82500SRobert Watson int 34417bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 34427bc82500SRobert Watson { 34437bc82500SRobert Watson 34447bc82500SRobert Watson return (ENOSYS); 34457bc82500SRobert Watson } 34467bc82500SRobert Watson 34477bc82500SRobert Watson int 34487bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 34497bc82500SRobert Watson { 34507bc82500SRobert Watson 34517bc82500SRobert Watson return (ENOSYS); 34527bc82500SRobert Watson } 34537bc82500SRobert Watson 34547bc82500SRobert Watson int 34557bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 34567bc82500SRobert Watson { 34577bc82500SRobert Watson 34587bc82500SRobert Watson return (ENOSYS); 34597bc82500SRobert Watson } 34607bc82500SRobert Watson 34617bc82500SRobert Watson int 34627bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 34637bc82500SRobert Watson { 34647bc82500SRobert Watson 34657bc82500SRobert Watson return (ENOSYS); 34667bc82500SRobert Watson } 346795fab37eSRobert Watson 346827f2eac7SRobert Watson int 346927f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 347027f2eac7SRobert Watson { 347127f2eac7SRobert Watson 347227f2eac7SRobert Watson return (ENOSYS); 347327f2eac7SRobert Watson } 347427f2eac7SRobert Watson 347595fab37eSRobert Watson #endif /* !MAC */ 3476