17bc82500SRobert Watson /*- 27bc82500SRobert Watson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 37bc82500SRobert Watson * Copyright (c) 2001 Ilmar S. Habibulin 47bc82500SRobert Watson * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 57bc82500SRobert Watson * All rights reserved. 67bc82500SRobert Watson * 77bc82500SRobert Watson * This software was developed by Robert Watson and Ilmar Habibulin for the 87bc82500SRobert Watson * TrustedBSD Project. 97bc82500SRobert Watson * 107bc82500SRobert Watson * This software was developed for the FreeBSD Project in part by NAI Labs, 117bc82500SRobert Watson * the Security Research Division of Network Associates, Inc. under 127bc82500SRobert Watson * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 137bc82500SRobert Watson * CHATS research program. 147bc82500SRobert Watson * 157bc82500SRobert Watson * Redistribution and use in source and binary forms, with or without 167bc82500SRobert Watson * modification, are permitted provided that the following conditions 177bc82500SRobert Watson * are met: 187bc82500SRobert Watson * 1. Redistributions of source code must retain the above copyright 197bc82500SRobert Watson * notice, this list of conditions and the following disclaimer. 207bc82500SRobert Watson * 2. Redistributions in binary form must reproduce the above copyright 217bc82500SRobert Watson * notice, this list of conditions and the following disclaimer in the 227bc82500SRobert Watson * documentation and/or other materials provided with the distribution. 237bc82500SRobert Watson * 3. The names of the authors may not be used to endorse or promote 247bc82500SRobert Watson * products derived from this software without specific prior written 257bc82500SRobert Watson * permission. 267bc82500SRobert Watson * 277bc82500SRobert Watson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 287bc82500SRobert Watson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 297bc82500SRobert Watson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 307bc82500SRobert Watson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 317bc82500SRobert Watson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 327bc82500SRobert Watson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 337bc82500SRobert Watson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 347bc82500SRobert Watson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 357bc82500SRobert Watson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 367bc82500SRobert Watson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 377bc82500SRobert Watson * SUCH DAMAGE. 387bc82500SRobert Watson * 397bc82500SRobert Watson * $FreeBSD$ 407bc82500SRobert Watson */ 417bc82500SRobert Watson /* 427bc82500SRobert Watson * Developed by the TrustedBSD Project. 437bc82500SRobert Watson * 447bc82500SRobert Watson * Framework for extensible kernel access control. Kernel and userland 457bc82500SRobert Watson * interface to the framework, policy registration and composition. 467bc82500SRobert Watson */ 477bc82500SRobert Watson 487bc82500SRobert Watson #include "opt_mac.h" 49328048bcSPoul-Henning Kamp #include "opt_devfs.h" 50f9d0d524SRobert Watson 517bc82500SRobert Watson #include <sys/param.h> 5295fab37eSRobert Watson #include <sys/extattr.h> 5395fab37eSRobert Watson #include <sys/kernel.h> 5495fab37eSRobert Watson #include <sys/lock.h> 55b656366bSBruce Evans #include <sys/malloc.h> 5695fab37eSRobert Watson #include <sys/mutex.h> 5795fab37eSRobert Watson #include <sys/mac.h> 587ba28492SRobert Watson #include <sys/module.h> 5995fab37eSRobert Watson #include <sys/proc.h> 6095fab37eSRobert Watson #include <sys/systm.h> 617bc82500SRobert Watson #include <sys/sysproto.h> 627bc82500SRobert Watson #include <sys/sysent.h> 6395fab37eSRobert Watson #include <sys/vnode.h> 6495fab37eSRobert Watson #include <sys/mount.h> 6595fab37eSRobert Watson #include <sys/file.h> 6695fab37eSRobert Watson #include <sys/namei.h> 6795fab37eSRobert Watson #include <sys/socket.h> 6895fab37eSRobert Watson #include <sys/pipe.h> 6995fab37eSRobert Watson #include <sys/socketvar.h> 7095fab37eSRobert Watson #include <sys/sysctl.h> 7195fab37eSRobert Watson 7295fab37eSRobert Watson #include <vm/vm.h> 7395fab37eSRobert Watson #include <vm/pmap.h> 7495fab37eSRobert Watson #include <vm/vm_map.h> 7595fab37eSRobert Watson #include <vm/vm_object.h> 7695fab37eSRobert Watson 7795fab37eSRobert Watson #include <sys/mac_policy.h> 7895fab37eSRobert Watson 7995fab37eSRobert Watson #include <fs/devfs/devfs.h> 8095fab37eSRobert Watson 8195fab37eSRobert Watson #include <net/bpfdesc.h> 8295fab37eSRobert Watson #include <net/if.h> 8395fab37eSRobert Watson #include <net/if_var.h> 8495fab37eSRobert Watson 8595fab37eSRobert Watson #include <netinet/in.h> 8695fab37eSRobert Watson #include <netinet/ip_var.h> 8795fab37eSRobert Watson 8895fab37eSRobert Watson #ifdef MAC 8995fab37eSRobert Watson 907ba28492SRobert Watson /* 917ba28492SRobert Watson * Declare that the kernel provides MAC support, version 1. This permits 927ba28492SRobert Watson * modules to refuse to be loaded if the necessary support isn't present, 937ba28492SRobert Watson * even if it's pre-boot. 947ba28492SRobert Watson */ 957ba28492SRobert Watson MODULE_VERSION(kernel_mac_support, 1); 967ba28492SRobert Watson 9795fab37eSRobert Watson SYSCTL_DECL(_security); 9895fab37eSRobert Watson 9995fab37eSRobert Watson SYSCTL_NODE(_security, OID_AUTO, mac, CTLFLAG_RW, 0, 10095fab37eSRobert Watson "TrustedBSD MAC policy controls"); 101b2f0927aSRobert Watson 10295fab37eSRobert Watson #ifndef MAC_MAX_POLICIES 10395fab37eSRobert Watson #define MAC_MAX_POLICIES 8 10495fab37eSRobert Watson #endif 10595fab37eSRobert Watson #if MAC_MAX_POLICIES > 32 10695fab37eSRobert Watson #error "MAC_MAX_POLICIES too large" 10795fab37eSRobert Watson #endif 10895fab37eSRobert Watson static unsigned int mac_max_policies = MAC_MAX_POLICIES; 10995fab37eSRobert Watson static unsigned int mac_policy_offsets_free = (1 << MAC_MAX_POLICIES) - 1; 11095fab37eSRobert Watson SYSCTL_UINT(_security_mac, OID_AUTO, max_policies, CTLFLAG_RD, 11195fab37eSRobert Watson &mac_max_policies, 0, ""); 11295fab37eSRobert Watson 11395fab37eSRobert Watson static int mac_late = 0; 11495fab37eSRobert Watson 11595fab37eSRobert Watson static int mac_enforce_fs = 1; 11695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_fs, CTLFLAG_RW, 11795fab37eSRobert Watson &mac_enforce_fs, 0, "Enforce MAC policy on file system objects"); 11895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_fs", &mac_enforce_fs); 11995fab37eSRobert Watson 12095fab37eSRobert Watson static int mac_enforce_network = 1; 12195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW, 12295fab37eSRobert Watson &mac_enforce_network, 0, "Enforce MAC policy on network packets"); 12395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_network", &mac_enforce_network); 12495fab37eSRobert Watson 125b88c98f6SRobert Watson static int mac_enforce_pipe = 1; 126b88c98f6SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_pipe, CTLFLAG_RW, 127b88c98f6SRobert Watson &mac_enforce_pipe, 0, "Enforce MAC policy on pipe operations"); 128c031391bSRobert Watson TUNABLE_INT("security.mac.enforce_pipe", &mac_enforce_pipe); 129b88c98f6SRobert Watson 13095fab37eSRobert Watson static int mac_enforce_process = 1; 13195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_process, CTLFLAG_RW, 13295fab37eSRobert Watson &mac_enforce_process, 0, "Enforce MAC policy on inter-process operations"); 13395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_process", &mac_enforce_process); 13495fab37eSRobert Watson 13595fab37eSRobert Watson static int mac_enforce_socket = 1; 13695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW, 13795fab37eSRobert Watson &mac_enforce_socket, 0, "Enforce MAC policy on socket operations"); 13895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket); 13995fab37eSRobert Watson 140ca7850c3SRobert Watson static int mac_enforce_vm = 1; 141ca7850c3SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_vm, CTLFLAG_RW, 142ca7850c3SRobert Watson &mac_enforce_vm, 0, "Enforce MAC policy on vm operations"); 143c031391bSRobert Watson TUNABLE_INT("security.mac.enforce_vm", &mac_enforce_vm); 144ca7850c3SRobert Watson 14595fab37eSRobert Watson static int mac_label_size = sizeof(struct mac); 14695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, label_size, CTLFLAG_RD, 14795fab37eSRobert Watson &mac_label_size, 0, "Pre-compiled MAC label size"); 14895fab37eSRobert Watson 14995fab37eSRobert Watson static int mac_cache_fslabel_in_vnode = 1; 15095fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, cache_fslabel_in_vnode, CTLFLAG_RW, 15195fab37eSRobert Watson &mac_cache_fslabel_in_vnode, 0, "Cache mount fslabel in vnode"); 15295fab37eSRobert Watson TUNABLE_INT("security.mac.cache_fslabel_in_vnode", 15395fab37eSRobert Watson &mac_cache_fslabel_in_vnode); 15495fab37eSRobert Watson 15595fab37eSRobert Watson static int mac_vnode_label_cache_hits = 0; 15695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_hits, CTLFLAG_RD, 15795fab37eSRobert Watson &mac_vnode_label_cache_hits, 0, "Cache hits on vnode labels"); 15895fab37eSRobert Watson static int mac_vnode_label_cache_misses = 0; 15995fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD, 16095fab37eSRobert Watson &mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels"); 161c0f39905SRobert Watson 162c0f39905SRobert Watson static int mac_mmap_revocation = 1; 163c0f39905SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation, CTLFLAG_RW, 164c0f39905SRobert Watson &mac_mmap_revocation, 0, "Revoke mmap access to files on subject " 165c0f39905SRobert Watson "relabel"); 16699fa64f8SRobert Watson static int mac_mmap_revocation_via_cow = 0; 16795fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW, 16895fab37eSRobert Watson &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via " 16995fab37eSRobert Watson "copy-on-write semantics, or by removing all write access"); 17095fab37eSRobert Watson 171f050add5SRobert Watson #ifdef MAC_DEBUG 1726be0c25eSRobert Watson SYSCTL_NODE(_security_mac, OID_AUTO, debug, CTLFLAG_RW, 0, 1736be0c25eSRobert Watson "TrustedBSD MAC debug info"); 1746be0c25eSRobert Watson 1756be0c25eSRobert Watson static int mac_debug_label_fallback = 0; 1766be0c25eSRobert Watson SYSCTL_INT(_security_mac_debug, OID_AUTO, label_fallback, CTLFLAG_RW, 1776be0c25eSRobert Watson &mac_debug_label_fallback, 0, "Filesystems should fall back to fs label" 1786be0c25eSRobert Watson "when label is corrupted."); 1796be0c25eSRobert Watson TUNABLE_INT("security.mac.debug_label_fallback", 1806be0c25eSRobert Watson &mac_debug_label_fallback); 1816be0c25eSRobert Watson 182b2f0927aSRobert Watson SYSCTL_NODE(_security_mac_debug, OID_AUTO, counters, CTLFLAG_RW, 0, 183b2f0927aSRobert Watson "TrustedBSD MAC object counters"); 184b2f0927aSRobert Watson 18595fab37eSRobert Watson static unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs, 18695fab37eSRobert Watson nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents, 18795fab37eSRobert Watson nmacipqs, nmacpipes; 188b2f0927aSRobert Watson 189b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD, 19095fab37eSRobert Watson &nmacmbufs, 0, "number of mbufs in use"); 191b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, creds, CTLFLAG_RD, 19295fab37eSRobert Watson &nmaccreds, 0, "number of ucreds in use"); 193b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD, 19495fab37eSRobert Watson &nmacifnets, 0, "number of ifnets in use"); 195b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD, 19695fab37eSRobert Watson &nmacipqs, 0, "number of ipqs in use"); 197b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, bpfdescs, CTLFLAG_RD, 19895fab37eSRobert Watson &nmacbpfdescs, 0, "number of bpfdescs in use"); 199b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, sockets, CTLFLAG_RD, 20095fab37eSRobert Watson &nmacsockets, 0, "number of sockets in use"); 201b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, pipes, CTLFLAG_RD, 20295fab37eSRobert Watson &nmacpipes, 0, "number of pipes in use"); 203b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mounts, CTLFLAG_RD, 20495fab37eSRobert Watson &nmacmounts, 0, "number of mounts in use"); 205b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, temp, CTLFLAG_RD, 20695fab37eSRobert Watson &nmactemp, 0, "number of temporary labels in use"); 207b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, vnodes, CTLFLAG_RD, 20895fab37eSRobert Watson &nmacvnodes, 0, "number of vnodes in use"); 209b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, devfsdirents, CTLFLAG_RD, 21095fab37eSRobert Watson &nmacdevfsdirents, 0, "number of devfs dirents inuse"); 211f050add5SRobert Watson #endif 21295fab37eSRobert Watson 21395fab37eSRobert Watson static int error_select(int error1, int error2); 21495fab37eSRobert Watson static int mac_externalize(struct label *label, struct mac *mac); 21595fab37eSRobert Watson static int mac_policy_register(struct mac_policy_conf *mpc); 21695fab37eSRobert Watson static int mac_policy_unregister(struct mac_policy_conf *mpc); 21795fab37eSRobert Watson 21895fab37eSRobert Watson static int mac_stdcreatevnode_ea(struct vnode *vp); 21995fab37eSRobert Watson static void mac_cred_mmapped_drop_perms(struct thread *td, 22095fab37eSRobert Watson struct ucred *cred); 22195fab37eSRobert Watson static void mac_cred_mmapped_drop_perms_recurse(struct thread *td, 22295fab37eSRobert Watson struct ucred *cred, struct vm_map *map); 22395fab37eSRobert Watson 22495fab37eSRobert Watson MALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 22595fab37eSRobert Watson MALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 22695fab37eSRobert Watson 22795fab37eSRobert Watson /* 22895fab37eSRobert Watson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 22995fab37eSRobert Watson * the linked list of attached policy modules. Read-only consumers of 23095fab37eSRobert Watson * the list must acquire a shared lock for the duration of their use; 23195fab37eSRobert Watson * writers must acquire an exclusive lock. Note that for compound 23295fab37eSRobert Watson * operations, locks should be held for the entire compound operation, 23395fab37eSRobert Watson * and that this is not yet done for relabel requests. 23495fab37eSRobert Watson */ 23595fab37eSRobert Watson static struct mtx mac_policy_list_lock; 23695fab37eSRobert Watson static LIST_HEAD(, mac_policy_conf) mac_policy_list; 23795fab37eSRobert Watson static int mac_policy_list_busy; 23895fab37eSRobert Watson #define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 23995fab37eSRobert Watson "mac_policy_list_lock", NULL, MTX_DEF); 24095fab37eSRobert Watson #define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 24195fab37eSRobert Watson #define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 24295fab37eSRobert Watson 24395fab37eSRobert Watson #define MAC_POLICY_LIST_BUSY() do { \ 24495fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 24595fab37eSRobert Watson mac_policy_list_busy++; \ 24695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 24795fab37eSRobert Watson } while (0) 24895fab37eSRobert Watson 24995fab37eSRobert Watson #define MAC_POLICY_LIST_UNBUSY() do { \ 25095fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 25195fab37eSRobert Watson mac_policy_list_busy--; \ 25295fab37eSRobert Watson if (mac_policy_list_busy < 0) \ 25395fab37eSRobert Watson panic("Extra mac_policy_list_busy--"); \ 25495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 25595fab37eSRobert Watson } while (0) 25695fab37eSRobert Watson 25795fab37eSRobert Watson /* 25895fab37eSRobert Watson * MAC_CHECK performs the designated check by walking the policy 25995fab37eSRobert Watson * module list and checking with each as to how it feels about the 26095fab37eSRobert Watson * request. Note that it returns its value via 'error' in the scope 26195fab37eSRobert Watson * of the caller. 26295fab37eSRobert Watson */ 26395fab37eSRobert Watson #define MAC_CHECK(check, args...) do { \ 26495fab37eSRobert Watson struct mac_policy_conf *mpc; \ 26595fab37eSRobert Watson \ 26695fab37eSRobert Watson error = 0; \ 26795fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 26895fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 26995fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 27095fab37eSRobert Watson error = error_select( \ 27195fab37eSRobert Watson mpc->mpc_ops->mpo_ ## check (args), \ 27295fab37eSRobert Watson error); \ 27395fab37eSRobert Watson } \ 27495fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 27595fab37eSRobert Watson } while (0) 27695fab37eSRobert Watson 27795fab37eSRobert Watson /* 27895fab37eSRobert Watson * MAC_BOOLEAN performs the designated boolean composition by walking 27995fab37eSRobert Watson * the module list, invoking each instance of the operation, and 28095fab37eSRobert Watson * combining the results using the passed C operator. Note that it 28195fab37eSRobert Watson * returns its value via 'result' in the scope of the caller, which 28295fab37eSRobert Watson * should be initialized by the caller in a meaningful way to get 28395fab37eSRobert Watson * a meaningful result. 28495fab37eSRobert Watson */ 28595fab37eSRobert Watson #define MAC_BOOLEAN(operation, composition, args...) do { \ 28695fab37eSRobert Watson struct mac_policy_conf *mpc; \ 28795fab37eSRobert Watson \ 28895fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 28995fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 29095fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 29195fab37eSRobert Watson result = result composition \ 29295fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 29395fab37eSRobert Watson } \ 29495fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 29595fab37eSRobert Watson } while (0) 29695fab37eSRobert Watson 29795fab37eSRobert Watson /* 29895fab37eSRobert Watson * MAC_PERFORM performs the designated operation by walking the policy 29995fab37eSRobert Watson * module list and invoking that operation for each policy. 30095fab37eSRobert Watson */ 30195fab37eSRobert Watson #define MAC_PERFORM(operation, args...) do { \ 30295fab37eSRobert Watson struct mac_policy_conf *mpc; \ 30395fab37eSRobert Watson \ 30495fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 30595fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 30695fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 30795fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 30895fab37eSRobert Watson } \ 30995fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 31095fab37eSRobert Watson } while (0) 31195fab37eSRobert Watson 31295fab37eSRobert Watson /* 31395fab37eSRobert Watson * Initialize the MAC subsystem, including appropriate SMP locks. 31495fab37eSRobert Watson */ 31595fab37eSRobert Watson static void 31695fab37eSRobert Watson mac_init(void) 31795fab37eSRobert Watson { 31895fab37eSRobert Watson 31995fab37eSRobert Watson LIST_INIT(&mac_policy_list); 32095fab37eSRobert Watson MAC_POLICY_LIST_LOCKINIT(); 32195fab37eSRobert Watson } 32295fab37eSRobert Watson 32395fab37eSRobert Watson /* 32495fab37eSRobert Watson * For the purposes of modules that want to know if they were loaded 32595fab37eSRobert Watson * "early", set the mac_late flag once we've processed modules either 32695fab37eSRobert Watson * linked into the kernel, or loaded before the kernel startup. 32795fab37eSRobert Watson */ 32895fab37eSRobert Watson static void 32995fab37eSRobert Watson mac_late_init(void) 33095fab37eSRobert Watson { 33195fab37eSRobert Watson 33295fab37eSRobert Watson mac_late = 1; 33395fab37eSRobert Watson } 33495fab37eSRobert Watson 33595fab37eSRobert Watson /* 33695fab37eSRobert Watson * Allow MAC policy modules to register during boot, etc. 33795fab37eSRobert Watson */ 33895fab37eSRobert Watson int 33995fab37eSRobert Watson mac_policy_modevent(module_t mod, int type, void *data) 34095fab37eSRobert Watson { 34195fab37eSRobert Watson struct mac_policy_conf *mpc; 34295fab37eSRobert Watson int error; 34395fab37eSRobert Watson 34495fab37eSRobert Watson error = 0; 34595fab37eSRobert Watson mpc = (struct mac_policy_conf *) data; 34695fab37eSRobert Watson 34795fab37eSRobert Watson switch (type) { 34895fab37eSRobert Watson case MOD_LOAD: 34995fab37eSRobert Watson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 35095fab37eSRobert Watson mac_late) { 35195fab37eSRobert Watson printf("mac_policy_modevent: can't load %s policy " 35295fab37eSRobert Watson "after booting\n", mpc->mpc_name); 35395fab37eSRobert Watson error = EBUSY; 35495fab37eSRobert Watson break; 35595fab37eSRobert Watson } 35695fab37eSRobert Watson error = mac_policy_register(mpc); 35795fab37eSRobert Watson break; 35895fab37eSRobert Watson case MOD_UNLOAD: 35995fab37eSRobert Watson /* Don't unregister the module if it was never registered. */ 36095fab37eSRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 36195fab37eSRobert Watson != 0) 36295fab37eSRobert Watson error = mac_policy_unregister(mpc); 36395fab37eSRobert Watson else 36495fab37eSRobert Watson error = 0; 36595fab37eSRobert Watson break; 36695fab37eSRobert Watson default: 36795fab37eSRobert Watson break; 36895fab37eSRobert Watson } 36995fab37eSRobert Watson 37095fab37eSRobert Watson return (error); 37195fab37eSRobert Watson } 37295fab37eSRobert Watson 37395fab37eSRobert Watson static int 37495fab37eSRobert Watson mac_policy_register(struct mac_policy_conf *mpc) 37595fab37eSRobert Watson { 37695fab37eSRobert Watson struct mac_policy_conf *tmpc; 37795fab37eSRobert Watson struct mac_policy_op_entry *mpe; 37895fab37eSRobert Watson int slot; 37995fab37eSRobert Watson 380cc51a2b5SRobert Watson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*mpc->mpc_ops), 381cc51a2b5SRobert Watson M_MACOPVEC, M_WAITOK | M_ZERO); 38295fab37eSRobert Watson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 38395fab37eSRobert Watson switch (mpe->mpe_constant) { 38495fab37eSRobert Watson case MAC_OP_LAST: 38595fab37eSRobert Watson /* 38695fab37eSRobert Watson * Doesn't actually happen, but this allows checking 38795fab37eSRobert Watson * that all enumerated values are handled. 38895fab37eSRobert Watson */ 38995fab37eSRobert Watson break; 39095fab37eSRobert Watson case MAC_DESTROY: 39195fab37eSRobert Watson mpc->mpc_ops->mpo_destroy = 39295fab37eSRobert Watson mpe->mpe_function; 39395fab37eSRobert Watson break; 39495fab37eSRobert Watson case MAC_INIT: 39595fab37eSRobert Watson mpc->mpc_ops->mpo_init = 39695fab37eSRobert Watson mpe->mpe_function; 39795fab37eSRobert Watson break; 39827f2eac7SRobert Watson case MAC_SYSCALL: 39927f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall = 40027f2eac7SRobert Watson mpe->mpe_function; 40127f2eac7SRobert Watson break; 40296adb909SRobert Watson case MAC_INIT_BPFDESC_LABEL: 40396adb909SRobert Watson mpc->mpc_ops->mpo_init_bpfdesc_label = 40495fab37eSRobert Watson mpe->mpe_function; 40595fab37eSRobert Watson break; 40696adb909SRobert Watson case MAC_INIT_CRED_LABEL: 40796adb909SRobert Watson mpc->mpc_ops->mpo_init_cred_label = 40895fab37eSRobert Watson mpe->mpe_function; 40995fab37eSRobert Watson break; 41096adb909SRobert Watson case MAC_INIT_DEVFSDIRENT_LABEL: 41196adb909SRobert Watson mpc->mpc_ops->mpo_init_devfsdirent_label = 41295fab37eSRobert Watson mpe->mpe_function; 41395fab37eSRobert Watson break; 41496adb909SRobert Watson case MAC_INIT_IFNET_LABEL: 41596adb909SRobert Watson mpc->mpc_ops->mpo_init_ifnet_label = 41695fab37eSRobert Watson mpe->mpe_function; 41795fab37eSRobert Watson break; 41896adb909SRobert Watson case MAC_INIT_IPQ_LABEL: 41996adb909SRobert Watson mpc->mpc_ops->mpo_init_ipq_label = 42095fab37eSRobert Watson mpe->mpe_function; 42195fab37eSRobert Watson break; 42296adb909SRobert Watson case MAC_INIT_MBUF_LABEL: 42396adb909SRobert Watson mpc->mpc_ops->mpo_init_mbuf_label = 42495fab37eSRobert Watson mpe->mpe_function; 42595fab37eSRobert Watson break; 42696adb909SRobert Watson case MAC_INIT_MOUNT_LABEL: 42796adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_label = 42895fab37eSRobert Watson mpe->mpe_function; 42995fab37eSRobert Watson break; 43096adb909SRobert Watson case MAC_INIT_MOUNT_FS_LABEL: 43196adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_fs_label = 43295fab37eSRobert Watson mpe->mpe_function; 43395fab37eSRobert Watson break; 43496adb909SRobert Watson case MAC_INIT_PIPE_LABEL: 43596adb909SRobert Watson mpc->mpc_ops->mpo_init_pipe_label = 43695fab37eSRobert Watson mpe->mpe_function; 43795fab37eSRobert Watson break; 43896adb909SRobert Watson case MAC_INIT_SOCKET_LABEL: 43996adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_label = 44095fab37eSRobert Watson mpe->mpe_function; 44195fab37eSRobert Watson break; 44296adb909SRobert Watson case MAC_INIT_SOCKET_PEER_LABEL: 44396adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_peer_label = 44495fab37eSRobert Watson mpe->mpe_function; 44595fab37eSRobert Watson break; 44696adb909SRobert Watson case MAC_INIT_TEMP_LABEL: 44796adb909SRobert Watson mpc->mpc_ops->mpo_init_temp_label = 44895fab37eSRobert Watson mpe->mpe_function; 44995fab37eSRobert Watson break; 45096adb909SRobert Watson case MAC_INIT_VNODE_LABEL: 45196adb909SRobert Watson mpc->mpc_ops->mpo_init_vnode_label = 45295fab37eSRobert Watson mpe->mpe_function; 45395fab37eSRobert Watson break; 45496adb909SRobert Watson case MAC_DESTROY_BPFDESC_LABEL: 45596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_bpfdesc_label = 45695fab37eSRobert Watson mpe->mpe_function; 45795fab37eSRobert Watson break; 45896adb909SRobert Watson case MAC_DESTROY_CRED_LABEL: 45996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_cred_label = 46095fab37eSRobert Watson mpe->mpe_function; 46195fab37eSRobert Watson break; 46296adb909SRobert Watson case MAC_DESTROY_DEVFSDIRENT_LABEL: 46396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_devfsdirent_label = 46495fab37eSRobert Watson mpe->mpe_function; 46595fab37eSRobert Watson break; 46696adb909SRobert Watson case MAC_DESTROY_IFNET_LABEL: 46796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ifnet_label = 46895fab37eSRobert Watson mpe->mpe_function; 46995fab37eSRobert Watson break; 47096adb909SRobert Watson case MAC_DESTROY_IPQ_LABEL: 47196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ipq_label = 47295fab37eSRobert Watson mpe->mpe_function; 47395fab37eSRobert Watson break; 47496adb909SRobert Watson case MAC_DESTROY_MBUF_LABEL: 47596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mbuf_label = 47695fab37eSRobert Watson mpe->mpe_function; 47795fab37eSRobert Watson break; 47896adb909SRobert Watson case MAC_DESTROY_MOUNT_LABEL: 47996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_label = 48095fab37eSRobert Watson mpe->mpe_function; 48195fab37eSRobert Watson break; 48296adb909SRobert Watson case MAC_DESTROY_MOUNT_FS_LABEL: 48396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_fs_label = 48495fab37eSRobert Watson mpe->mpe_function; 48595fab37eSRobert Watson break; 48696adb909SRobert Watson case MAC_DESTROY_PIPE_LABEL: 48796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_pipe_label = 48896adb909SRobert Watson mpe->mpe_function; 48996adb909SRobert Watson break; 49096adb909SRobert Watson case MAC_DESTROY_SOCKET_LABEL: 49196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_label = 49296adb909SRobert Watson mpe->mpe_function; 49396adb909SRobert Watson break; 49496adb909SRobert Watson case MAC_DESTROY_SOCKET_PEER_LABEL: 49596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_peer_label = 49696adb909SRobert Watson mpe->mpe_function; 49796adb909SRobert Watson break; 49896adb909SRobert Watson case MAC_DESTROY_TEMP_LABEL: 49996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_temp_label = 50096adb909SRobert Watson mpe->mpe_function; 50196adb909SRobert Watson break; 50296adb909SRobert Watson case MAC_DESTROY_VNODE_LABEL: 50396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_vnode_label = 50495fab37eSRobert Watson mpe->mpe_function; 50595fab37eSRobert Watson break; 50695fab37eSRobert Watson case MAC_EXTERNALIZE: 50795fab37eSRobert Watson mpc->mpc_ops->mpo_externalize = 50895fab37eSRobert Watson mpe->mpe_function; 50995fab37eSRobert Watson break; 51095fab37eSRobert Watson case MAC_INTERNALIZE: 51195fab37eSRobert Watson mpc->mpc_ops->mpo_internalize = 51295fab37eSRobert Watson mpe->mpe_function; 51395fab37eSRobert Watson break; 51495fab37eSRobert Watson case MAC_CREATE_DEVFS_DEVICE: 51595fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_device = 51695fab37eSRobert Watson mpe->mpe_function; 51795fab37eSRobert Watson break; 51895fab37eSRobert Watson case MAC_CREATE_DEVFS_DIRECTORY: 51995fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_directory = 52095fab37eSRobert Watson mpe->mpe_function; 52195fab37eSRobert Watson break; 52295fab37eSRobert Watson case MAC_CREATE_DEVFS_VNODE: 52395fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_vnode = 52495fab37eSRobert Watson mpe->mpe_function; 52595fab37eSRobert Watson break; 52695fab37eSRobert Watson case MAC_STDCREATEVNODE_EA: 52795fab37eSRobert Watson mpc->mpc_ops->mpo_stdcreatevnode_ea = 52895fab37eSRobert Watson mpe->mpe_function; 52995fab37eSRobert Watson break; 53095fab37eSRobert Watson case MAC_CREATE_VNODE: 53195fab37eSRobert Watson mpc->mpc_ops->mpo_create_vnode = 53295fab37eSRobert Watson mpe->mpe_function; 53395fab37eSRobert Watson break; 53495fab37eSRobert Watson case MAC_CREATE_MOUNT: 53595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mount = 53695fab37eSRobert Watson mpe->mpe_function; 53795fab37eSRobert Watson break; 53895fab37eSRobert Watson case MAC_CREATE_ROOT_MOUNT: 53995fab37eSRobert Watson mpc->mpc_ops->mpo_create_root_mount = 54095fab37eSRobert Watson mpe->mpe_function; 54195fab37eSRobert Watson break; 54295fab37eSRobert Watson case MAC_RELABEL_VNODE: 54395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_vnode = 54495fab37eSRobert Watson mpe->mpe_function; 54595fab37eSRobert Watson break; 54695fab37eSRobert Watson case MAC_UPDATE_DEVFSDIRENT: 54795fab37eSRobert Watson mpc->mpc_ops->mpo_update_devfsdirent = 54895fab37eSRobert Watson mpe->mpe_function; 54995fab37eSRobert Watson break; 55095fab37eSRobert Watson case MAC_UPDATE_PROCFSVNODE: 55195fab37eSRobert Watson mpc->mpc_ops->mpo_update_procfsvnode = 55295fab37eSRobert Watson mpe->mpe_function; 55395fab37eSRobert Watson break; 55495fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTATTR: 55595fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_extattr = 55695fab37eSRobert Watson mpe->mpe_function; 55795fab37eSRobert Watson break; 55895fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 55995fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_externalized = 56095fab37eSRobert Watson mpe->mpe_function; 56195fab37eSRobert Watson break; 56295fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_MOUNT: 56395fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_mount = 56495fab37eSRobert Watson mpe->mpe_function; 56595fab37eSRobert Watson break; 56695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_SOCKET: 56795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_socket = 56895fab37eSRobert Watson mpe->mpe_function; 56995fab37eSRobert Watson break; 57095fab37eSRobert Watson case MAC_CREATE_PIPE: 57195fab37eSRobert Watson mpc->mpc_ops->mpo_create_pipe = 57295fab37eSRobert Watson mpe->mpe_function; 57395fab37eSRobert Watson break; 57495fab37eSRobert Watson case MAC_CREATE_SOCKET: 57595fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket = 57695fab37eSRobert Watson mpe->mpe_function; 57795fab37eSRobert Watson break; 57895fab37eSRobert Watson case MAC_CREATE_SOCKET_FROM_SOCKET: 57995fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket_from_socket = 58095fab37eSRobert Watson mpe->mpe_function; 58195fab37eSRobert Watson break; 58295fab37eSRobert Watson case MAC_RELABEL_PIPE: 58395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_pipe = 58495fab37eSRobert Watson mpe->mpe_function; 58595fab37eSRobert Watson break; 58695fab37eSRobert Watson case MAC_RELABEL_SOCKET: 58795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_socket = 58895fab37eSRobert Watson mpe->mpe_function; 58995fab37eSRobert Watson break; 59095fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_MBUF: 59195fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 59295fab37eSRobert Watson mpe->mpe_function; 59395fab37eSRobert Watson break; 59495fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 59595fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 59695fab37eSRobert Watson mpe->mpe_function; 59795fab37eSRobert Watson break; 59895fab37eSRobert Watson case MAC_CREATE_BPFDESC: 59995fab37eSRobert Watson mpc->mpc_ops->mpo_create_bpfdesc = 60095fab37eSRobert Watson mpe->mpe_function; 60195fab37eSRobert Watson break; 60295fab37eSRobert Watson case MAC_CREATE_DATAGRAM_FROM_IPQ: 60395fab37eSRobert Watson mpc->mpc_ops->mpo_create_datagram_from_ipq = 60495fab37eSRobert Watson mpe->mpe_function; 60595fab37eSRobert Watson break; 60695fab37eSRobert Watson case MAC_CREATE_FRAGMENT: 60795fab37eSRobert Watson mpc->mpc_ops->mpo_create_fragment = 60895fab37eSRobert Watson mpe->mpe_function; 60995fab37eSRobert Watson break; 61095fab37eSRobert Watson case MAC_CREATE_IFNET: 61195fab37eSRobert Watson mpc->mpc_ops->mpo_create_ifnet = 61295fab37eSRobert Watson mpe->mpe_function; 61395fab37eSRobert Watson break; 61495fab37eSRobert Watson case MAC_CREATE_IPQ: 61595fab37eSRobert Watson mpc->mpc_ops->mpo_create_ipq = 61695fab37eSRobert Watson mpe->mpe_function; 61795fab37eSRobert Watson break; 61895fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_MBUF: 61995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 62095fab37eSRobert Watson mpe->mpe_function; 62195fab37eSRobert Watson break; 62295fab37eSRobert Watson case MAC_CREATE_MBUF_LINKLAYER: 62395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_linklayer = 62495fab37eSRobert Watson mpe->mpe_function; 62595fab37eSRobert Watson break; 62695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_BPFDESC: 62795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 62895fab37eSRobert Watson mpe->mpe_function; 62995fab37eSRobert Watson break; 63095fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_IFNET: 63195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 63295fab37eSRobert Watson mpe->mpe_function; 63395fab37eSRobert Watson break; 63495fab37eSRobert Watson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 63595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 63695fab37eSRobert Watson mpe->mpe_function; 63795fab37eSRobert Watson break; 63895fab37eSRobert Watson case MAC_CREATE_MBUF_NETLAYER: 63995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_netlayer = 64095fab37eSRobert Watson mpe->mpe_function; 64195fab37eSRobert Watson break; 64295fab37eSRobert Watson case MAC_FRAGMENT_MATCH: 64395fab37eSRobert Watson mpc->mpc_ops->mpo_fragment_match = 64495fab37eSRobert Watson mpe->mpe_function; 64595fab37eSRobert Watson break; 64695fab37eSRobert Watson case MAC_RELABEL_IFNET: 64795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_ifnet = 64895fab37eSRobert Watson mpe->mpe_function; 64995fab37eSRobert Watson break; 65095fab37eSRobert Watson case MAC_UPDATE_IPQ: 65195fab37eSRobert Watson mpc->mpc_ops->mpo_update_ipq = 65295fab37eSRobert Watson mpe->mpe_function; 65395fab37eSRobert Watson break; 65495fab37eSRobert Watson case MAC_CREATE_CRED: 65595fab37eSRobert Watson mpc->mpc_ops->mpo_create_cred = 65695fab37eSRobert Watson mpe->mpe_function; 65795fab37eSRobert Watson break; 65895fab37eSRobert Watson case MAC_EXECVE_TRANSITION: 65995fab37eSRobert Watson mpc->mpc_ops->mpo_execve_transition = 66095fab37eSRobert Watson mpe->mpe_function; 66195fab37eSRobert Watson break; 66295fab37eSRobert Watson case MAC_EXECVE_WILL_TRANSITION: 66395fab37eSRobert Watson mpc->mpc_ops->mpo_execve_will_transition = 66495fab37eSRobert Watson mpe->mpe_function; 66595fab37eSRobert Watson break; 66695fab37eSRobert Watson case MAC_CREATE_PROC0: 66795fab37eSRobert Watson mpc->mpc_ops->mpo_create_proc0 = mpe->mpe_function; 66895fab37eSRobert Watson break; 66995fab37eSRobert Watson case MAC_CREATE_PROC1: 67095fab37eSRobert Watson mpc->mpc_ops->mpo_create_proc1 = mpe->mpe_function; 67195fab37eSRobert Watson break; 67295fab37eSRobert Watson case MAC_RELABEL_CRED: 67395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_cred = 67495fab37eSRobert Watson mpe->mpe_function; 67595fab37eSRobert Watson break; 67692dbb82aSRobert Watson case MAC_THREAD_USERRET: 67792dbb82aSRobert Watson mpc->mpc_ops->mpo_thread_userret = 67892dbb82aSRobert Watson mpe->mpe_function; 67992dbb82aSRobert Watson break; 68095fab37eSRobert Watson case MAC_CHECK_BPFDESC_RECEIVE: 68195fab37eSRobert Watson mpc->mpc_ops->mpo_check_bpfdesc_receive = 68295fab37eSRobert Watson mpe->mpe_function; 68395fab37eSRobert Watson break; 68495fab37eSRobert Watson case MAC_CHECK_CRED_RELABEL: 68595fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_relabel = 68695fab37eSRobert Watson mpe->mpe_function; 68795fab37eSRobert Watson break; 68895fab37eSRobert Watson case MAC_CHECK_CRED_VISIBLE: 68995fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_visible = 69095fab37eSRobert Watson mpe->mpe_function; 69195fab37eSRobert Watson break; 69295fab37eSRobert Watson case MAC_CHECK_IFNET_RELABEL: 69395fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_relabel = 69495fab37eSRobert Watson mpe->mpe_function; 69595fab37eSRobert Watson break; 69695fab37eSRobert Watson case MAC_CHECK_IFNET_TRANSMIT: 69795fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_transmit = 69895fab37eSRobert Watson mpe->mpe_function; 69995fab37eSRobert Watson break; 70095fab37eSRobert Watson case MAC_CHECK_MOUNT_STAT: 70195fab37eSRobert Watson mpc->mpc_ops->mpo_check_mount_stat = 70295fab37eSRobert Watson mpe->mpe_function; 70395fab37eSRobert Watson break; 70495fab37eSRobert Watson case MAC_CHECK_PIPE_IOCTL: 70595fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_ioctl = 70695fab37eSRobert Watson mpe->mpe_function; 70795fab37eSRobert Watson break; 708c024c3eeSRobert Watson case MAC_CHECK_PIPE_POLL: 709c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_poll = 710c024c3eeSRobert Watson mpe->mpe_function; 711c024c3eeSRobert Watson break; 712c024c3eeSRobert Watson case MAC_CHECK_PIPE_READ: 713c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_read = 71495fab37eSRobert Watson mpe->mpe_function; 71595fab37eSRobert Watson break; 71695fab37eSRobert Watson case MAC_CHECK_PIPE_RELABEL: 71795fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_relabel = 71895fab37eSRobert Watson mpe->mpe_function; 71995fab37eSRobert Watson break; 720c024c3eeSRobert Watson case MAC_CHECK_PIPE_STAT: 721c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_stat = 722c024c3eeSRobert Watson mpe->mpe_function; 723c024c3eeSRobert Watson break; 724c024c3eeSRobert Watson case MAC_CHECK_PIPE_WRITE: 725c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_write = 726c024c3eeSRobert Watson mpe->mpe_function; 727c024c3eeSRobert Watson break; 72895fab37eSRobert Watson case MAC_CHECK_PROC_DEBUG: 72995fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_debug = 73095fab37eSRobert Watson mpe->mpe_function; 73195fab37eSRobert Watson break; 73295fab37eSRobert Watson case MAC_CHECK_PROC_SCHED: 73395fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_sched = 73495fab37eSRobert Watson mpe->mpe_function; 73595fab37eSRobert Watson break; 73695fab37eSRobert Watson case MAC_CHECK_PROC_SIGNAL: 73795fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_signal = 73895fab37eSRobert Watson mpe->mpe_function; 73995fab37eSRobert Watson break; 74095fab37eSRobert Watson case MAC_CHECK_SOCKET_BIND: 74195fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_bind = 74295fab37eSRobert Watson mpe->mpe_function; 74395fab37eSRobert Watson break; 74495fab37eSRobert Watson case MAC_CHECK_SOCKET_CONNECT: 74595fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_connect = 74695fab37eSRobert Watson mpe->mpe_function; 74795fab37eSRobert Watson break; 748d61198e4SRobert Watson case MAC_CHECK_SOCKET_DELIVER: 749d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_deliver = 75095fab37eSRobert Watson mpe->mpe_function; 75195fab37eSRobert Watson break; 752d61198e4SRobert Watson case MAC_CHECK_SOCKET_LISTEN: 753d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_listen = 75495fab37eSRobert Watson mpe->mpe_function; 75595fab37eSRobert Watson break; 75695fab37eSRobert Watson case MAC_CHECK_SOCKET_RELABEL: 75795fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_relabel = 75895fab37eSRobert Watson mpe->mpe_function; 75995fab37eSRobert Watson break; 76095fab37eSRobert Watson case MAC_CHECK_SOCKET_VISIBLE: 76195fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_visible = 76295fab37eSRobert Watson mpe->mpe_function; 76395fab37eSRobert Watson break; 76495fab37eSRobert Watson case MAC_CHECK_VNODE_ACCESS: 76595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_access = 76695fab37eSRobert Watson mpe->mpe_function; 76795fab37eSRobert Watson break; 76895fab37eSRobert Watson case MAC_CHECK_VNODE_CHDIR: 76995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chdir = 77095fab37eSRobert Watson mpe->mpe_function; 77195fab37eSRobert Watson break; 77295fab37eSRobert Watson case MAC_CHECK_VNODE_CHROOT: 77395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chroot = 77495fab37eSRobert Watson mpe->mpe_function; 77595fab37eSRobert Watson break; 77695fab37eSRobert Watson case MAC_CHECK_VNODE_CREATE: 77795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_create = 77895fab37eSRobert Watson mpe->mpe_function; 77995fab37eSRobert Watson break; 78095fab37eSRobert Watson case MAC_CHECK_VNODE_DELETE: 78195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_delete = 78295fab37eSRobert Watson mpe->mpe_function; 78395fab37eSRobert Watson break; 78495fab37eSRobert Watson case MAC_CHECK_VNODE_DELETEACL: 78595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_deleteacl = 78695fab37eSRobert Watson mpe->mpe_function; 78795fab37eSRobert Watson break; 78895fab37eSRobert Watson case MAC_CHECK_VNODE_EXEC: 78995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_exec = 79095fab37eSRobert Watson mpe->mpe_function; 79195fab37eSRobert Watson break; 79295fab37eSRobert Watson case MAC_CHECK_VNODE_GETACL: 79395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getacl = 79495fab37eSRobert Watson mpe->mpe_function; 79595fab37eSRobert Watson break; 79695fab37eSRobert Watson case MAC_CHECK_VNODE_GETEXTATTR: 79795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getextattr = 79895fab37eSRobert Watson mpe->mpe_function; 79995fab37eSRobert Watson break; 80095fab37eSRobert Watson case MAC_CHECK_VNODE_LOOKUP: 80195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_lookup = 80295fab37eSRobert Watson mpe->mpe_function; 80395fab37eSRobert Watson break; 80495fab37eSRobert Watson case MAC_CHECK_VNODE_MMAP_PERMS: 80595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 80695fab37eSRobert Watson mpe->mpe_function; 80795fab37eSRobert Watson break; 80895fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 80995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 81095fab37eSRobert Watson mpe->mpe_function; 81195fab37eSRobert Watson break; 8127f724f8bSRobert Watson case MAC_CHECK_VNODE_POLL: 8137f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_poll = 8147f724f8bSRobert Watson mpe->mpe_function; 8157f724f8bSRobert Watson break; 8167f724f8bSRobert Watson case MAC_CHECK_VNODE_READ: 8177f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_read = 8187f724f8bSRobert Watson mpe->mpe_function; 8197f724f8bSRobert Watson break; 82095fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 82195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 82295fab37eSRobert Watson mpe->mpe_function; 82395fab37eSRobert Watson break; 82495fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 82595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 82695fab37eSRobert Watson mpe->mpe_function; 82795fab37eSRobert Watson break; 82895fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 82995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 83095fab37eSRobert Watson mpe->mpe_function; 83195fab37eSRobert Watson break; 83295fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 83395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 83495fab37eSRobert Watson mpe->mpe_function; 83595fab37eSRobert Watson break; 83695fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 83795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 83895fab37eSRobert Watson mpe->mpe_function; 83995fab37eSRobert Watson break; 84095fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 84195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 84295fab37eSRobert Watson mpe->mpe_function; 84395fab37eSRobert Watson break; 84495fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 84595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 84695fab37eSRobert Watson mpe->mpe_function; 84795fab37eSRobert Watson break; 84895fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 84995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 85095fab37eSRobert Watson mpe->mpe_function; 85195fab37eSRobert Watson break; 85295fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 85395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 85495fab37eSRobert Watson mpe->mpe_function; 85595fab37eSRobert Watson break; 85695fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 85795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 85895fab37eSRobert Watson mpe->mpe_function; 85995fab37eSRobert Watson break; 86095fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 86195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 86295fab37eSRobert Watson mpe->mpe_function; 86395fab37eSRobert Watson break; 86495fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 86595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 86695fab37eSRobert Watson mpe->mpe_function; 86795fab37eSRobert Watson break; 86895fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 86995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 87095fab37eSRobert Watson mpe->mpe_function; 87195fab37eSRobert Watson break; 8727f724f8bSRobert Watson case MAC_CHECK_VNODE_WRITE: 8737f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_write = 8747f724f8bSRobert Watson mpe->mpe_function; 8757f724f8bSRobert Watson break; 87695fab37eSRobert Watson /* 87795fab37eSRobert Watson default: 87895fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 87995fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 88095fab37eSRobert Watson return (EINVAL); 88195fab37eSRobert Watson */ 88295fab37eSRobert Watson } 88395fab37eSRobert Watson } 88495fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 88595fab37eSRobert Watson if (mac_policy_list_busy > 0) { 88695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 88795fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 88895fab37eSRobert Watson mpc->mpc_ops = NULL; 88995fab37eSRobert Watson return (EBUSY); 89095fab37eSRobert Watson } 89195fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 89295fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 89395fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89495fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89595fab37eSRobert Watson mpc->mpc_ops = NULL; 89695fab37eSRobert Watson return (EEXIST); 89795fab37eSRobert Watson } 89895fab37eSRobert Watson } 89995fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 90095fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 90195fab37eSRobert Watson if (slot == 0) { 90295fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 90395fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 90495fab37eSRobert Watson mpc->mpc_ops = NULL; 90595fab37eSRobert Watson return (ENOMEM); 90695fab37eSRobert Watson } 90795fab37eSRobert Watson slot--; 90895fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 90995fab37eSRobert Watson *mpc->mpc_field_off = slot; 91095fab37eSRobert Watson } 91195fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 91295fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 91395fab37eSRobert Watson 91495fab37eSRobert Watson /* Per-policy initialization. */ 91595fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 91695fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 91795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 91895fab37eSRobert Watson 91995fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 92095fab37eSRobert Watson mpc->mpc_name); 92195fab37eSRobert Watson 92295fab37eSRobert Watson return (0); 92395fab37eSRobert Watson } 92495fab37eSRobert Watson 92595fab37eSRobert Watson static int 92695fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 92795fab37eSRobert Watson { 92895fab37eSRobert Watson 92995fab37eSRobert Watson #if 0 93095fab37eSRobert Watson /* 93195fab37eSRobert Watson * Don't allow unloading modules with private data. 93295fab37eSRobert Watson */ 93395fab37eSRobert Watson if (mpc->mpc_field_off != NULL) 93495fab37eSRobert Watson return (EBUSY); 93595fab37eSRobert Watson #endif 93695fab37eSRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) 93795fab37eSRobert Watson return (EBUSY); 93895fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 93995fab37eSRobert Watson if (mac_policy_list_busy > 0) { 94095fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 94195fab37eSRobert Watson return (EBUSY); 94295fab37eSRobert Watson } 94395fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 94495fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 94595fab37eSRobert Watson 94695fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 94795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 94895fab37eSRobert Watson 94995fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 95095fab37eSRobert Watson mpc->mpc_ops = NULL; 95195fab37eSRobert Watson 95295fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 95395fab37eSRobert Watson mpc->mpc_name); 95495fab37eSRobert Watson 95595fab37eSRobert Watson return (0); 95695fab37eSRobert Watson } 95795fab37eSRobert Watson 95895fab37eSRobert Watson /* 95995fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 96095fab37eSRobert Watson * value with the higher precedence. 96195fab37eSRobert Watson */ 96295fab37eSRobert Watson static int 96395fab37eSRobert Watson error_select(int error1, int error2) 96495fab37eSRobert Watson { 96595fab37eSRobert Watson 96695fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 96795fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 96895fab37eSRobert Watson return (EDEADLK); 96995fab37eSRobert Watson 97095fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 97195fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 97295fab37eSRobert Watson return (EINVAL); 97395fab37eSRobert Watson 97495fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 97595fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 97695fab37eSRobert Watson return (ESRCH); 97795fab37eSRobert Watson 97895fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 97995fab37eSRobert Watson return (ENOENT); 98095fab37eSRobert Watson 98195fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 98295fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 98395fab37eSRobert Watson return (EACCES); 98495fab37eSRobert Watson 98595fab37eSRobert Watson /* Precedence goes to privilege. */ 98695fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 98795fab37eSRobert Watson return (EPERM); 98895fab37eSRobert Watson 98995fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 99095fab37eSRobert Watson if (error1 != 0) 99195fab37eSRobert Watson return (error1); 99295fab37eSRobert Watson return (error2); 99395fab37eSRobert Watson } 99495fab37eSRobert Watson 99595fab37eSRobert Watson void 99695fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 99795fab37eSRobert Watson { 99895fab37eSRobert Watson 99995fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 100095fab37eSRobert Watson } 100195fab37eSRobert Watson 100295fab37eSRobert Watson void 100395fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 100495fab37eSRobert Watson { 100595fab37eSRobert Watson 100695fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 100795fab37eSRobert Watson } 100895fab37eSRobert Watson 100995fab37eSRobert Watson /* 101095fab37eSRobert Watson * Support callout for policies that manage their own externalization 101195fab37eSRobert Watson * using extended attributes. 101295fab37eSRobert Watson */ 101395fab37eSRobert Watson static int 101495fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 101595fab37eSRobert Watson { 101695fab37eSRobert Watson int error; 101795fab37eSRobert Watson 101895fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 101995fab37eSRobert Watson &mp->mnt_fslabel); 102095fab37eSRobert Watson 102195fab37eSRobert Watson return (error); 102295fab37eSRobert Watson } 102395fab37eSRobert Watson 102495fab37eSRobert Watson /* 102595fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 102695fab37eSRobert Watson * vnode. 102795fab37eSRobert Watson */ 102895fab37eSRobert Watson static int 102995fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 103095fab37eSRobert Watson { 103195fab37eSRobert Watson int error; 103295fab37eSRobert Watson 103395fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 103495fab37eSRobert Watson 103595fab37eSRobert Watson return (error); 103695fab37eSRobert Watson } 103795fab37eSRobert Watson 103895fab37eSRobert Watson /* 103995fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 104095fab37eSRobert Watson * the mountpoint. 104195fab37eSRobert Watson */ 104295fab37eSRobert Watson void 104395fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 104495fab37eSRobert Watson { 104595fab37eSRobert Watson 104695fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 104795fab37eSRobert Watson &mp->mnt_fslabel); 104895fab37eSRobert Watson 1049e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 105095fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 1051e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 105295fab37eSRobert Watson } 105395fab37eSRobert Watson 105495fab37eSRobert Watson /* 105595fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 105695fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 105795fab37eSRobert Watson * extended attributes. 105895fab37eSRobert Watson */ 105995fab37eSRobert Watson int 106095fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 106195fab37eSRobert Watson { 106295fab37eSRobert Watson struct vnode *vp = ap->a_vp; 106395fab37eSRobert Watson struct mac extmac; 106495fab37eSRobert Watson int buflen, error; 106595fab37eSRobert Watson 106695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 106795fab37eSRobert Watson 106895fab37eSRobert Watson /* 106995fab37eSRobert Watson * Call out to external policies first. Order doesn't really 107095fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 107195fab37eSRobert Watson */ 107295fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 107395fab37eSRobert Watson if (error) 107495fab37eSRobert Watson return (error); 107595fab37eSRobert Watson 107695fab37eSRobert Watson buflen = sizeof(extmac); 107795fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 107895fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 107995fab37eSRobert Watson (char *)&extmac, curthread); 108095fab37eSRobert Watson switch (error) { 108195fab37eSRobert Watson case 0: 108295fab37eSRobert Watson /* Got it */ 108395fab37eSRobert Watson break; 108495fab37eSRobert Watson 108595fab37eSRobert Watson case ENOATTR: 108695fab37eSRobert Watson /* 108795fab37eSRobert Watson * Use the label from the mount point. 108895fab37eSRobert Watson */ 108995fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 109095fab37eSRobert Watson return (0); 109195fab37eSRobert Watson 109295fab37eSRobert Watson case EOPNOTSUPP: 109395fab37eSRobert Watson default: 109495fab37eSRobert Watson /* Fail horribly. */ 109595fab37eSRobert Watson return (error); 109695fab37eSRobert Watson } 109795fab37eSRobert Watson 109895fab37eSRobert Watson if (buflen != sizeof(extmac)) 109995fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 110095fab37eSRobert Watson if (error == 0) 110195fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 110295fab37eSRobert Watson if (error == 0) 1103e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 110495fab37eSRobert Watson else { 110595fab37eSRobert Watson struct vattr va; 110695fab37eSRobert Watson 110795fab37eSRobert Watson printf("Corrupted label on %s", 110895fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 110995fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 111095fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 11116be0c25eSRobert Watson #ifdef MAC_DEBUG 111295fab37eSRobert Watson if (mac_debug_label_fallback) { 111395fab37eSRobert Watson printf(", falling back.\n"); 111495fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 111595fab37eSRobert Watson error = 0; 111695fab37eSRobert Watson } else { 11176be0c25eSRobert Watson #endif 111895fab37eSRobert Watson printf(".\n"); 111995fab37eSRobert Watson error = EPERM; 11206be0c25eSRobert Watson #ifdef MAC_DEBUG 112195fab37eSRobert Watson } 11226be0c25eSRobert Watson #endif 112395fab37eSRobert Watson } 112495fab37eSRobert Watson 112595fab37eSRobert Watson return (error); 112695fab37eSRobert Watson } 112795fab37eSRobert Watson 112895fab37eSRobert Watson /* 112995fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 113095fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 113195fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 113295fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 113395fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 113495fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 113595fab37eSRobert Watson * all vnodes. 113695fab37eSRobert Watson */ 113795fab37eSRobert Watson static int 113895fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 113995fab37eSRobert Watson { 114095fab37eSRobert Watson int error; 114195fab37eSRobert Watson 114295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 114395fab37eSRobert Watson 114495fab37eSRobert Watson if (vp->v_mount == NULL) { 114595fab37eSRobert Watson /* 114695fab37eSRobert Watson Eventually, we probably want to special-case refreshing 114795fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 114895fab37eSRobert Watson that case might be handled here. 114995fab37eSRobert Watson 115095fab37eSRobert Watson mac_update_vnode_deadfs(vp); 115195fab37eSRobert Watson return (0); 115295fab37eSRobert Watson */ 115395fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 115406be2aaaSNate Lawson if (vp->v_type != VNON) 115595fab37eSRobert Watson printf( 115606be2aaaSNate Lawson "vn_refreshlabel: null v_mount with non-VNON\n"); 115795fab37eSRobert Watson return (EBADF); 115895fab37eSRobert Watson } 115995fab37eSRobert Watson 1160e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 116195fab37eSRobert Watson mac_vnode_label_cache_hits++; 116295fab37eSRobert Watson return (0); 116395fab37eSRobert Watson } else 116495fab37eSRobert Watson mac_vnode_label_cache_misses++; 116595fab37eSRobert Watson 116695fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 116795fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 116895fab37eSRobert Watson return (0); 116995fab37eSRobert Watson } 117095fab37eSRobert Watson 117195fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 117295fab37eSRobert Watson switch (error) { 117395fab37eSRobert Watson case EOPNOTSUPP: 117495fab37eSRobert Watson /* 117595fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 117695fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 117795fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 117895fab37eSRobert Watson * about doing this. 117995fab37eSRobert Watson */ 118095fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 118195fab37eSRobert Watson error = 0; 118295fab37eSRobert Watson default: 118395fab37eSRobert Watson return (error); 118495fab37eSRobert Watson } 118595fab37eSRobert Watson } 118695fab37eSRobert Watson 118795fab37eSRobert Watson /* 118895fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 118995fab37eSRobert Watson * function must be called after EA service is available for the vnode, 119095fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 119195fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 119295fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 119395fab37eSRobert Watson */ 119495fab37eSRobert Watson int 119595fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 119695fab37eSRobert Watson { 119795fab37eSRobert Watson struct mac extmac; 119895fab37eSRobert Watson int error; 119995fab37eSRobert Watson 1200e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 120195fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 120295fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 120395fab37eSRobert Watson } else { 120495fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 120595fab37eSRobert Watson if (error) 120695fab37eSRobert Watson return (error); 120795fab37eSRobert Watson 120895fab37eSRobert Watson /* 120995fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 121095fab37eSRobert Watson * disk. If we fail, return a failure to abort the 121195fab37eSRobert Watson * create operation. Really, this failure shouldn't 121295fab37eSRobert Watson * happen except in fairly unusual circumstances (out 121395fab37eSRobert Watson * of disk, etc). 121495fab37eSRobert Watson */ 121595fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 121695fab37eSRobert Watson 121795fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 121895fab37eSRobert Watson if (error) 121995fab37eSRobert Watson return (error); 122095fab37eSRobert Watson 122195fab37eSRobert Watson /* 122295fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 122395fab37eSRobert Watson * directly manage their extended attributes. 122495fab37eSRobert Watson */ 122595fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 122695fab37eSRobert Watson if (error) 122795fab37eSRobert Watson return (error); 122895fab37eSRobert Watson 122995fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 123095fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 123195fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 123295fab37eSRobert Watson if (error == 0) 1233e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 123495fab37eSRobert Watson else { 123595fab37eSRobert Watson #if 0 123695fab37eSRobert Watson /* 123795fab37eSRobert Watson * In theory, we could have fall-back behavior here. 123895fab37eSRobert Watson * It would probably be incorrect. 123995fab37eSRobert Watson */ 124095fab37eSRobert Watson #endif 124195fab37eSRobert Watson return (error); 124295fab37eSRobert Watson } 124395fab37eSRobert Watson } 124495fab37eSRobert Watson 124595fab37eSRobert Watson return (0); 124695fab37eSRobert Watson } 124795fab37eSRobert Watson 124895fab37eSRobert Watson void 124995fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 125095fab37eSRobert Watson { 125195fab37eSRobert Watson int error; 125295fab37eSRobert Watson 125395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 125495fab37eSRobert Watson 125595fab37eSRobert Watson error = vn_refreshlabel(vp, old); 125695fab37eSRobert Watson if (error) { 125795fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 125895fab37eSRobert Watson error); 125995fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 126095fab37eSRobert Watson } 126195fab37eSRobert Watson 126295fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 126395fab37eSRobert Watson } 126495fab37eSRobert Watson 126595fab37eSRobert Watson int 126695fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 126795fab37eSRobert Watson { 126895fab37eSRobert Watson int error, result; 126995fab37eSRobert Watson 127095fab37eSRobert Watson error = vn_refreshlabel(vp, old); 127195fab37eSRobert Watson if (error) 127295fab37eSRobert Watson return (error); 127395fab37eSRobert Watson 127495fab37eSRobert Watson result = 0; 127595fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 127695fab37eSRobert Watson 127795fab37eSRobert Watson return (result); 127895fab37eSRobert Watson } 127995fab37eSRobert Watson 128095fab37eSRobert Watson static void 128195fab37eSRobert Watson mac_init_label(struct label *label) 128295fab37eSRobert Watson { 128395fab37eSRobert Watson 128495fab37eSRobert Watson bzero(label, sizeof(*label)); 128595fab37eSRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 128695fab37eSRobert Watson } 128795fab37eSRobert Watson 128895fab37eSRobert Watson static void 128995fab37eSRobert Watson mac_init_structmac(struct mac *mac) 129095fab37eSRobert Watson { 129195fab37eSRobert Watson 129295fab37eSRobert Watson bzero(mac, sizeof(*mac)); 129395fab37eSRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 129495fab37eSRobert Watson } 129595fab37eSRobert Watson 129695fab37eSRobert Watson static void 129795fab37eSRobert Watson mac_destroy_label(struct label *label) 129895fab37eSRobert Watson { 129995fab37eSRobert Watson 130095fab37eSRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 130195fab37eSRobert Watson ("destroying uninitialized label")); 130295fab37eSRobert Watson 130395fab37eSRobert Watson bzero(label, sizeof(*label)); 130495fab37eSRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 130595fab37eSRobert Watson } 130695fab37eSRobert Watson 130795fab37eSRobert Watson int 130895fab37eSRobert Watson mac_init_mbuf(struct mbuf *m, int how) 130995fab37eSRobert Watson { 131095fab37eSRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 131195fab37eSRobert Watson 131295fab37eSRobert Watson /* "how" is one of M_(TRY|DONT)WAIT */ 131395fab37eSRobert Watson mac_init_label(&m->m_pkthdr.label); 131496adb909SRobert Watson MAC_PERFORM(init_mbuf_label, &m->m_pkthdr.label, how); 1315f050add5SRobert Watson #ifdef MAC_DEBUG 131695fab37eSRobert Watson atomic_add_int(&nmacmbufs, 1); 1317f050add5SRobert Watson #endif 131895fab37eSRobert Watson return (0); 131995fab37eSRobert Watson } 132095fab37eSRobert Watson 132195fab37eSRobert Watson void 132295fab37eSRobert Watson mac_destroy_mbuf(struct mbuf *m) 132395fab37eSRobert Watson { 132495fab37eSRobert Watson 132596adb909SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 132695fab37eSRobert Watson mac_destroy_label(&m->m_pkthdr.label); 1327f050add5SRobert Watson #ifdef MAC_DEBUG 132895fab37eSRobert Watson atomic_subtract_int(&nmacmbufs, 1); 1329f050add5SRobert Watson #endif 133095fab37eSRobert Watson } 133195fab37eSRobert Watson 133295fab37eSRobert Watson void 133395fab37eSRobert Watson mac_init_cred(struct ucred *cr) 133495fab37eSRobert Watson { 133595fab37eSRobert Watson 133695fab37eSRobert Watson mac_init_label(&cr->cr_label); 133796adb909SRobert Watson MAC_PERFORM(init_cred_label, &cr->cr_label); 1338f050add5SRobert Watson #ifdef MAC_DEBUG 133995fab37eSRobert Watson atomic_add_int(&nmaccreds, 1); 1340f050add5SRobert Watson #endif 134195fab37eSRobert Watson } 134295fab37eSRobert Watson 134395fab37eSRobert Watson void 134495fab37eSRobert Watson mac_destroy_cred(struct ucred *cr) 134595fab37eSRobert Watson { 134695fab37eSRobert Watson 134796adb909SRobert Watson MAC_PERFORM(destroy_cred_label, &cr->cr_label); 134895fab37eSRobert Watson mac_destroy_label(&cr->cr_label); 1349f050add5SRobert Watson #ifdef MAC_DEBUG 135095fab37eSRobert Watson atomic_subtract_int(&nmaccreds, 1); 1351f050add5SRobert Watson #endif 135295fab37eSRobert Watson } 135395fab37eSRobert Watson 135495fab37eSRobert Watson void 135595fab37eSRobert Watson mac_init_ifnet(struct ifnet *ifp) 135695fab37eSRobert Watson { 135795fab37eSRobert Watson 135895fab37eSRobert Watson mac_init_label(&ifp->if_label); 135996adb909SRobert Watson MAC_PERFORM(init_ifnet_label, &ifp->if_label); 1360f050add5SRobert Watson #ifdef MAC_DEBUG 136195fab37eSRobert Watson atomic_add_int(&nmacifnets, 1); 1362f050add5SRobert Watson #endif 136395fab37eSRobert Watson } 136495fab37eSRobert Watson 136595fab37eSRobert Watson void 136695fab37eSRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 136795fab37eSRobert Watson { 136895fab37eSRobert Watson 136996adb909SRobert Watson MAC_PERFORM(destroy_ifnet_label, &ifp->if_label); 137095fab37eSRobert Watson mac_destroy_label(&ifp->if_label); 1371f050add5SRobert Watson #ifdef MAC_DEBUG 137295fab37eSRobert Watson atomic_subtract_int(&nmacifnets, 1); 1373f050add5SRobert Watson #endif 137495fab37eSRobert Watson } 137595fab37eSRobert Watson 137695fab37eSRobert Watson void 137795fab37eSRobert Watson mac_init_ipq(struct ipq *ipq) 137895fab37eSRobert Watson { 137995fab37eSRobert Watson 138095fab37eSRobert Watson mac_init_label(&ipq->ipq_label); 138196adb909SRobert Watson MAC_PERFORM(init_ipq_label, &ipq->ipq_label); 1382f050add5SRobert Watson #ifdef MAC_DEBUG 138395fab37eSRobert Watson atomic_add_int(&nmacipqs, 1); 1384f050add5SRobert Watson #endif 138595fab37eSRobert Watson } 138695fab37eSRobert Watson 138795fab37eSRobert Watson void 138895fab37eSRobert Watson mac_destroy_ipq(struct ipq *ipq) 138995fab37eSRobert Watson { 139095fab37eSRobert Watson 139196adb909SRobert Watson MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label); 139295fab37eSRobert Watson mac_destroy_label(&ipq->ipq_label); 1393f050add5SRobert Watson #ifdef MAC_DEBUG 139495fab37eSRobert Watson atomic_subtract_int(&nmacipqs, 1); 1395f050add5SRobert Watson #endif 139695fab37eSRobert Watson } 139795fab37eSRobert Watson 139895fab37eSRobert Watson void 139995fab37eSRobert Watson mac_init_socket(struct socket *socket) 140095fab37eSRobert Watson { 140195fab37eSRobert Watson 140295fab37eSRobert Watson mac_init_label(&socket->so_label); 140395fab37eSRobert Watson mac_init_label(&socket->so_peerlabel); 140496adb909SRobert Watson MAC_PERFORM(init_socket_label, &socket->so_label); 140596adb909SRobert Watson MAC_PERFORM(init_socket_peer_label, &socket->so_peerlabel); 1406f050add5SRobert Watson #ifdef MAC_DEBUG 140795fab37eSRobert Watson atomic_add_int(&nmacsockets, 1); 1408f050add5SRobert Watson #endif 140995fab37eSRobert Watson } 141095fab37eSRobert Watson 141195fab37eSRobert Watson void 141295fab37eSRobert Watson mac_destroy_socket(struct socket *socket) 141395fab37eSRobert Watson { 141495fab37eSRobert Watson 141596adb909SRobert Watson MAC_PERFORM(destroy_socket_label, &socket->so_label); 141696adb909SRobert Watson MAC_PERFORM(destroy_socket_peer_label, &socket->so_peerlabel); 141795fab37eSRobert Watson mac_destroy_label(&socket->so_label); 141895fab37eSRobert Watson mac_destroy_label(&socket->so_peerlabel); 1419f050add5SRobert Watson #ifdef MAC_DEBUG 142095fab37eSRobert Watson atomic_subtract_int(&nmacsockets, 1); 1421f050add5SRobert Watson #endif 142295fab37eSRobert Watson } 142395fab37eSRobert Watson 142495fab37eSRobert Watson void 142595fab37eSRobert Watson mac_init_pipe(struct pipe *pipe) 142695fab37eSRobert Watson { 142795fab37eSRobert Watson struct label *label; 142895fab37eSRobert Watson 142995fab37eSRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 143095fab37eSRobert Watson mac_init_label(label); 143195fab37eSRobert Watson pipe->pipe_label = label; 143295fab37eSRobert Watson pipe->pipe_peer->pipe_label = label; 143396adb909SRobert Watson MAC_PERFORM(init_pipe_label, pipe->pipe_label); 1434f050add5SRobert Watson #ifdef MAC_DEBUG 143595fab37eSRobert Watson atomic_add_int(&nmacpipes, 1); 1436f050add5SRobert Watson #endif 143795fab37eSRobert Watson } 143895fab37eSRobert Watson 143995fab37eSRobert Watson void 144095fab37eSRobert Watson mac_destroy_pipe(struct pipe *pipe) 144195fab37eSRobert Watson { 144295fab37eSRobert Watson 144396adb909SRobert Watson MAC_PERFORM(destroy_pipe_label, pipe->pipe_label); 144495fab37eSRobert Watson mac_destroy_label(pipe->pipe_label); 144595fab37eSRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 1446f050add5SRobert Watson #ifdef MAC_DEBUG 144795fab37eSRobert Watson atomic_subtract_int(&nmacpipes, 1); 1448f050add5SRobert Watson #endif 144995fab37eSRobert Watson } 145095fab37eSRobert Watson 145195fab37eSRobert Watson void 145295fab37eSRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 145395fab37eSRobert Watson { 145495fab37eSRobert Watson 145595fab37eSRobert Watson mac_init_label(&bpf_d->bd_label); 145696adb909SRobert Watson MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label); 1457f050add5SRobert Watson #ifdef MAC_DEBUG 145895fab37eSRobert Watson atomic_add_int(&nmacbpfdescs, 1); 1459f050add5SRobert Watson #endif 146095fab37eSRobert Watson } 146195fab37eSRobert Watson 146295fab37eSRobert Watson void 146395fab37eSRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 146495fab37eSRobert Watson { 146595fab37eSRobert Watson 146696adb909SRobert Watson MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label); 146795fab37eSRobert Watson mac_destroy_label(&bpf_d->bd_label); 1468f050add5SRobert Watson #ifdef MAC_DEBUG 146995fab37eSRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 1470f050add5SRobert Watson #endif 147195fab37eSRobert Watson } 147295fab37eSRobert Watson 147395fab37eSRobert Watson void 147495fab37eSRobert Watson mac_init_mount(struct mount *mp) 147595fab37eSRobert Watson { 147695fab37eSRobert Watson 147795fab37eSRobert Watson mac_init_label(&mp->mnt_mntlabel); 147895fab37eSRobert Watson mac_init_label(&mp->mnt_fslabel); 147996adb909SRobert Watson MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel); 148096adb909SRobert Watson MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel); 1481f050add5SRobert Watson #ifdef MAC_DEBUG 148295fab37eSRobert Watson atomic_add_int(&nmacmounts, 1); 1483f050add5SRobert Watson #endif 148495fab37eSRobert Watson } 148595fab37eSRobert Watson 148695fab37eSRobert Watson void 148795fab37eSRobert Watson mac_destroy_mount(struct mount *mp) 148895fab37eSRobert Watson { 148995fab37eSRobert Watson 149096adb909SRobert Watson MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel); 149196adb909SRobert Watson MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel); 149295fab37eSRobert Watson mac_destroy_label(&mp->mnt_fslabel); 149395fab37eSRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 1494f050add5SRobert Watson #ifdef MAC_DEBUG 149595fab37eSRobert Watson atomic_subtract_int(&nmacmounts, 1); 1496f050add5SRobert Watson #endif 149795fab37eSRobert Watson } 149895fab37eSRobert Watson 149995fab37eSRobert Watson static void 150095fab37eSRobert Watson mac_init_temp(struct label *label) 150195fab37eSRobert Watson { 150295fab37eSRobert Watson 150395fab37eSRobert Watson mac_init_label(label); 150496adb909SRobert Watson MAC_PERFORM(init_temp_label, label); 1505f050add5SRobert Watson #ifdef MAC_DEBUG 150695fab37eSRobert Watson atomic_add_int(&nmactemp, 1); 1507f050add5SRobert Watson #endif 150895fab37eSRobert Watson } 150995fab37eSRobert Watson 151095fab37eSRobert Watson static void 151195fab37eSRobert Watson mac_destroy_temp(struct label *label) 151295fab37eSRobert Watson { 151395fab37eSRobert Watson 151496adb909SRobert Watson MAC_PERFORM(destroy_temp_label, label); 151595fab37eSRobert Watson mac_destroy_label(label); 1516f050add5SRobert Watson #ifdef MAC_DEBUG 151795fab37eSRobert Watson atomic_subtract_int(&nmactemp, 1); 1518f050add5SRobert Watson #endif 151995fab37eSRobert Watson } 152095fab37eSRobert Watson 152195fab37eSRobert Watson void 152295fab37eSRobert Watson mac_init_vnode(struct vnode *vp) 152395fab37eSRobert Watson { 152495fab37eSRobert Watson 152595fab37eSRobert Watson mac_init_label(&vp->v_label); 152696adb909SRobert Watson MAC_PERFORM(init_vnode_label, &vp->v_label); 1527f050add5SRobert Watson #ifdef MAC_DEBUG 152895fab37eSRobert Watson atomic_add_int(&nmacvnodes, 1); 1529f050add5SRobert Watson #endif 153095fab37eSRobert Watson } 153195fab37eSRobert Watson 153295fab37eSRobert Watson void 153395fab37eSRobert Watson mac_destroy_vnode(struct vnode *vp) 153495fab37eSRobert Watson { 153595fab37eSRobert Watson 153696adb909SRobert Watson MAC_PERFORM(destroy_vnode_label, &vp->v_label); 153795fab37eSRobert Watson mac_destroy_label(&vp->v_label); 1538f050add5SRobert Watson #ifdef MAC_DEBUG 153995fab37eSRobert Watson atomic_subtract_int(&nmacvnodes, 1); 1540f050add5SRobert Watson #endif 154195fab37eSRobert Watson } 154295fab37eSRobert Watson 154395fab37eSRobert Watson void 154495fab37eSRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 154595fab37eSRobert Watson { 154695fab37eSRobert Watson 154795fab37eSRobert Watson mac_init_label(&de->de_label); 154896adb909SRobert Watson MAC_PERFORM(init_devfsdirent_label, &de->de_label); 1549f050add5SRobert Watson #ifdef MAC_DEBUG 155095fab37eSRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 1551f050add5SRobert Watson #endif 155295fab37eSRobert Watson } 155395fab37eSRobert Watson 155495fab37eSRobert Watson void 155595fab37eSRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 155695fab37eSRobert Watson { 155795fab37eSRobert Watson 155896adb909SRobert Watson MAC_PERFORM(destroy_devfsdirent_label, &de->de_label); 155995fab37eSRobert Watson mac_destroy_label(&de->de_label); 1560f050add5SRobert Watson #ifdef MAC_DEBUG 156195fab37eSRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 1562f050add5SRobert Watson #endif 156395fab37eSRobert Watson } 156495fab37eSRobert Watson 156595fab37eSRobert Watson static int 156695fab37eSRobert Watson mac_externalize(struct label *label, struct mac *mac) 156795fab37eSRobert Watson { 156895fab37eSRobert Watson int error; 156995fab37eSRobert Watson 157095fab37eSRobert Watson mac_init_structmac(mac); 157195fab37eSRobert Watson MAC_CHECK(externalize, label, mac); 157295fab37eSRobert Watson 157395fab37eSRobert Watson return (error); 157495fab37eSRobert Watson } 157595fab37eSRobert Watson 157695fab37eSRobert Watson static int 157795fab37eSRobert Watson mac_internalize(struct label *label, struct mac *mac) 157895fab37eSRobert Watson { 157995fab37eSRobert Watson int error; 158095fab37eSRobert Watson 158195fab37eSRobert Watson mac_init_temp(label); 158295fab37eSRobert Watson MAC_CHECK(internalize, label, mac); 158395fab37eSRobert Watson if (error) 158495fab37eSRobert Watson mac_destroy_temp(label); 158595fab37eSRobert Watson 158695fab37eSRobert Watson return (error); 158795fab37eSRobert Watson } 158895fab37eSRobert Watson 158995fab37eSRobert Watson /* 159095fab37eSRobert Watson * Initialize MAC label for the first kernel process, from which other 159195fab37eSRobert Watson * kernel processes and threads are spawned. 159295fab37eSRobert Watson */ 159395fab37eSRobert Watson void 159495fab37eSRobert Watson mac_create_proc0(struct ucred *cred) 159595fab37eSRobert Watson { 159695fab37eSRobert Watson 159795fab37eSRobert Watson MAC_PERFORM(create_proc0, cred); 159895fab37eSRobert Watson } 159995fab37eSRobert Watson 160095fab37eSRobert Watson /* 160195fab37eSRobert Watson * Initialize MAC label for the first userland process, from which other 160295fab37eSRobert Watson * userland processes and threads are spawned. 160395fab37eSRobert Watson */ 160495fab37eSRobert Watson void 160595fab37eSRobert Watson mac_create_proc1(struct ucred *cred) 160695fab37eSRobert Watson { 160795fab37eSRobert Watson 160895fab37eSRobert Watson MAC_PERFORM(create_proc1, cred); 160995fab37eSRobert Watson } 161095fab37eSRobert Watson 161192dbb82aSRobert Watson void 161292dbb82aSRobert Watson mac_thread_userret(struct thread *td) 161392dbb82aSRobert Watson { 161492dbb82aSRobert Watson 161592dbb82aSRobert Watson MAC_PERFORM(thread_userret, td); 161692dbb82aSRobert Watson } 161792dbb82aSRobert Watson 161895fab37eSRobert Watson /* 161995fab37eSRobert Watson * When a new process is created, its label must be initialized. Generally, 162095fab37eSRobert Watson * this involves inheritence from the parent process, modulo possible 162195fab37eSRobert Watson * deltas. This function allows that processing to take place. 162295fab37eSRobert Watson */ 162395fab37eSRobert Watson void 162495fab37eSRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 162595fab37eSRobert Watson { 162695fab37eSRobert Watson 162795fab37eSRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 162895fab37eSRobert Watson } 162995fab37eSRobert Watson 163095fab37eSRobert Watson int 163195fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 163295fab37eSRobert Watson { 163395fab37eSRobert Watson int error; 163495fab37eSRobert Watson 163595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 163695fab37eSRobert Watson 163795fab37eSRobert Watson if (!mac_enforce_fs) 163895fab37eSRobert Watson return (0); 163995fab37eSRobert Watson 164095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 164195fab37eSRobert Watson if (error) 164295fab37eSRobert Watson return (error); 164395fab37eSRobert Watson 164495fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 164595fab37eSRobert Watson return (error); 164695fab37eSRobert Watson } 164795fab37eSRobert Watson 164895fab37eSRobert Watson int 164995fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 165095fab37eSRobert Watson { 165195fab37eSRobert Watson int error; 165295fab37eSRobert Watson 165395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 165495fab37eSRobert Watson 165595fab37eSRobert Watson if (!mac_enforce_fs) 165695fab37eSRobert Watson return (0); 165795fab37eSRobert Watson 165895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 165995fab37eSRobert Watson if (error) 166095fab37eSRobert Watson return (error); 166195fab37eSRobert Watson 166295fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 166395fab37eSRobert Watson return (error); 166495fab37eSRobert Watson } 166595fab37eSRobert Watson 166695fab37eSRobert Watson int 166795fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 166895fab37eSRobert Watson { 166995fab37eSRobert Watson int error; 167095fab37eSRobert Watson 167195fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 167295fab37eSRobert Watson 167395fab37eSRobert Watson if (!mac_enforce_fs) 167495fab37eSRobert Watson return (0); 167595fab37eSRobert Watson 167695fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 167795fab37eSRobert Watson if (error) 167895fab37eSRobert Watson return (error); 167995fab37eSRobert Watson 168095fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 168195fab37eSRobert Watson return (error); 168295fab37eSRobert Watson } 168395fab37eSRobert Watson 168495fab37eSRobert Watson int 168595fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 168695fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 168795fab37eSRobert Watson { 168895fab37eSRobert Watson int error; 168995fab37eSRobert Watson 169095fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 169195fab37eSRobert Watson 169295fab37eSRobert Watson if (!mac_enforce_fs) 169395fab37eSRobert Watson return (0); 169495fab37eSRobert Watson 169595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 169695fab37eSRobert Watson if (error) 169795fab37eSRobert Watson return (error); 169895fab37eSRobert Watson 169995fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 170095fab37eSRobert Watson return (error); 170195fab37eSRobert Watson } 170295fab37eSRobert Watson 170395fab37eSRobert Watson int 170495fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 170595fab37eSRobert Watson struct componentname *cnp) 170695fab37eSRobert Watson { 170795fab37eSRobert Watson int error; 170895fab37eSRobert Watson 170995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 171095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 171195fab37eSRobert Watson 171295fab37eSRobert Watson if (!mac_enforce_fs) 171395fab37eSRobert Watson return (0); 171495fab37eSRobert Watson 171595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 171695fab37eSRobert Watson if (error) 171795fab37eSRobert Watson return (error); 171895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 171995fab37eSRobert Watson if (error) 172095fab37eSRobert Watson return (error); 172195fab37eSRobert Watson 172295fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 172395fab37eSRobert Watson &vp->v_label, cnp); 172495fab37eSRobert Watson return (error); 172595fab37eSRobert Watson } 172695fab37eSRobert Watson 172795fab37eSRobert Watson int 172895fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 172995fab37eSRobert Watson acl_type_t type) 173095fab37eSRobert Watson { 173195fab37eSRobert Watson int error; 173295fab37eSRobert Watson 173395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 173495fab37eSRobert Watson 173595fab37eSRobert Watson if (!mac_enforce_fs) 173695fab37eSRobert Watson return (0); 173795fab37eSRobert Watson 173895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 173995fab37eSRobert Watson if (error) 174095fab37eSRobert Watson return (error); 174195fab37eSRobert Watson 174295fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 174395fab37eSRobert Watson return (error); 174495fab37eSRobert Watson } 174595fab37eSRobert Watson 174695fab37eSRobert Watson int 174795fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 174895fab37eSRobert Watson { 174995fab37eSRobert Watson int error; 175095fab37eSRobert Watson 1751851704bbSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1752851704bbSRobert Watson 175395fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 175495fab37eSRobert Watson return (0); 175595fab37eSRobert Watson 175695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 175795fab37eSRobert Watson if (error) 175895fab37eSRobert Watson return (error); 175995fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 176095fab37eSRobert Watson 176195fab37eSRobert Watson return (error); 176295fab37eSRobert Watson } 176395fab37eSRobert Watson 176495fab37eSRobert Watson int 176595fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 176695fab37eSRobert Watson { 176795fab37eSRobert Watson int error; 176895fab37eSRobert Watson 176995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 177095fab37eSRobert Watson 177195fab37eSRobert Watson if (!mac_enforce_fs) 177295fab37eSRobert Watson return (0); 177395fab37eSRobert Watson 177495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 177595fab37eSRobert Watson if (error) 177695fab37eSRobert Watson return (error); 177795fab37eSRobert Watson 177895fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 177995fab37eSRobert Watson return (error); 178095fab37eSRobert Watson } 178195fab37eSRobert Watson 178295fab37eSRobert Watson int 178395fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 178495fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 178595fab37eSRobert Watson { 178695fab37eSRobert Watson int error; 178795fab37eSRobert Watson 178895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 178995fab37eSRobert Watson 179095fab37eSRobert Watson if (!mac_enforce_fs) 179195fab37eSRobert Watson return (0); 179295fab37eSRobert Watson 179395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 179495fab37eSRobert Watson if (error) 179595fab37eSRobert Watson return (error); 179695fab37eSRobert Watson 179795fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 179895fab37eSRobert Watson attrnamespace, name, uio); 179995fab37eSRobert Watson return (error); 180095fab37eSRobert Watson } 180195fab37eSRobert Watson 180295fab37eSRobert Watson int 180395fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 180495fab37eSRobert Watson struct componentname *cnp) 180595fab37eSRobert Watson { 180695fab37eSRobert Watson int error; 180795fab37eSRobert Watson 180895fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 180995fab37eSRobert Watson 181095fab37eSRobert Watson if (!mac_enforce_fs) 181195fab37eSRobert Watson return (0); 181295fab37eSRobert Watson 181395fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 181495fab37eSRobert Watson if (error) 181595fab37eSRobert Watson return (error); 181695fab37eSRobert Watson 181795fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 181895fab37eSRobert Watson return (error); 181995fab37eSRobert Watson } 182095fab37eSRobert Watson 182195fab37eSRobert Watson vm_prot_t 182295fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 182395fab37eSRobert Watson { 182495fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 182595fab37eSRobert Watson 1826ca7850c3SRobert Watson if (!mac_enforce_vm) 1827ca7850c3SRobert Watson return (result); 1828ca7850c3SRobert Watson 182995fab37eSRobert Watson /* 183095fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 183195fab37eSRobert Watson */ 183295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 183395fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 183495fab37eSRobert Watson newmapping); 183595fab37eSRobert Watson return (result); 183695fab37eSRobert Watson } 183795fab37eSRobert Watson 183895fab37eSRobert Watson int 183995fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 184095fab37eSRobert Watson { 184195fab37eSRobert Watson int error; 184295fab37eSRobert Watson 184395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 184495fab37eSRobert Watson 184595fab37eSRobert Watson if (!mac_enforce_fs) 184695fab37eSRobert Watson return (0); 184795fab37eSRobert Watson 184895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 184995fab37eSRobert Watson if (error) 185095fab37eSRobert Watson return (error); 185195fab37eSRobert Watson 185295fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 185395fab37eSRobert Watson return (error); 185495fab37eSRobert Watson } 185595fab37eSRobert Watson 185695fab37eSRobert Watson int 1857177142e4SRobert Watson mac_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1858177142e4SRobert Watson struct vnode *vp) 18597f724f8bSRobert Watson { 18607f724f8bSRobert Watson int error; 18617f724f8bSRobert Watson 18627f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 18637f724f8bSRobert Watson 18647f724f8bSRobert Watson if (!mac_enforce_fs) 18657f724f8bSRobert Watson return (0); 18667f724f8bSRobert Watson 1867177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 18687f724f8bSRobert Watson if (error) 18697f724f8bSRobert Watson return (error); 18707f724f8bSRobert Watson 1871177142e4SRobert Watson MAC_CHECK(check_vnode_poll, active_cred, file_cred, vp, 1872177142e4SRobert Watson &vp->v_label); 18737f724f8bSRobert Watson 18747f724f8bSRobert Watson return (error); 18757f724f8bSRobert Watson } 18767f724f8bSRobert Watson 18777f724f8bSRobert Watson int 1878177142e4SRobert Watson mac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 1879177142e4SRobert Watson struct vnode *vp) 18807f724f8bSRobert Watson { 18817f724f8bSRobert Watson int error; 18827f724f8bSRobert Watson 18837f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 18847f724f8bSRobert Watson 18857f724f8bSRobert Watson if (!mac_enforce_fs) 18867f724f8bSRobert Watson return (0); 18877f724f8bSRobert Watson 1888177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 18897f724f8bSRobert Watson if (error) 18907f724f8bSRobert Watson return (error); 18917f724f8bSRobert Watson 1892177142e4SRobert Watson MAC_CHECK(check_vnode_read, active_cred, file_cred, vp, 1893177142e4SRobert Watson &vp->v_label); 18947f724f8bSRobert Watson 18957f724f8bSRobert Watson return (error); 18967f724f8bSRobert Watson } 18977f724f8bSRobert Watson 18987f724f8bSRobert Watson int 189995fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 190095fab37eSRobert Watson { 190195fab37eSRobert Watson int error; 190295fab37eSRobert Watson 190395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 190495fab37eSRobert Watson 190595fab37eSRobert Watson if (!mac_enforce_fs) 190695fab37eSRobert Watson return (0); 190795fab37eSRobert Watson 190895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 190995fab37eSRobert Watson if (error) 191095fab37eSRobert Watson return (error); 191195fab37eSRobert Watson 191295fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 191395fab37eSRobert Watson return (error); 191495fab37eSRobert Watson } 191595fab37eSRobert Watson 191695fab37eSRobert Watson int 191795fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 191895fab37eSRobert Watson { 191995fab37eSRobert Watson int error; 192095fab37eSRobert Watson 192195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 192295fab37eSRobert Watson 192395fab37eSRobert Watson if (!mac_enforce_fs) 192495fab37eSRobert Watson return (0); 192595fab37eSRobert Watson 192695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 192795fab37eSRobert Watson if (error) 192895fab37eSRobert Watson return (error); 192995fab37eSRobert Watson 193095fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 193195fab37eSRobert Watson return (error); 193295fab37eSRobert Watson } 193395fab37eSRobert Watson 193495fab37eSRobert Watson static int 193595fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 193695fab37eSRobert Watson struct label *newlabel) 193795fab37eSRobert Watson { 193895fab37eSRobert Watson int error; 193995fab37eSRobert Watson 194095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 194195fab37eSRobert Watson 194295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 194395fab37eSRobert Watson if (error) 194495fab37eSRobert Watson return (error); 194595fab37eSRobert Watson 194695fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 194795fab37eSRobert Watson 194895fab37eSRobert Watson return (error); 194995fab37eSRobert Watson } 195095fab37eSRobert Watson 195195fab37eSRobert Watson int 195295fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 195395fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 195495fab37eSRobert Watson { 195595fab37eSRobert Watson int error; 195695fab37eSRobert Watson 195795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 195895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 195995fab37eSRobert Watson 196095fab37eSRobert Watson if (!mac_enforce_fs) 196195fab37eSRobert Watson return (0); 196295fab37eSRobert Watson 196395fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 196495fab37eSRobert Watson if (error) 196595fab37eSRobert Watson return (error); 196695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 196795fab37eSRobert Watson if (error) 196895fab37eSRobert Watson return (error); 196995fab37eSRobert Watson 197095fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 197195fab37eSRobert Watson &vp->v_label, cnp); 197295fab37eSRobert Watson return (error); 197395fab37eSRobert Watson } 197495fab37eSRobert Watson 197595fab37eSRobert Watson int 197695fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 197795fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 197895fab37eSRobert Watson { 197995fab37eSRobert Watson int error; 198095fab37eSRobert Watson 198195fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 198295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 198395fab37eSRobert Watson 198495fab37eSRobert Watson if (!mac_enforce_fs) 198595fab37eSRobert Watson return (0); 198695fab37eSRobert Watson 198795fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 198895fab37eSRobert Watson if (error) 198995fab37eSRobert Watson return (error); 199095fab37eSRobert Watson if (vp != NULL) { 199195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 199295fab37eSRobert Watson if (error) 199395fab37eSRobert Watson return (error); 199495fab37eSRobert Watson } 199595fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 199695fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 199795fab37eSRobert Watson return (error); 199895fab37eSRobert Watson } 199995fab37eSRobert Watson 200095fab37eSRobert Watson int 200195fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 200295fab37eSRobert Watson { 200395fab37eSRobert Watson int error; 200495fab37eSRobert Watson 200595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 200695fab37eSRobert Watson 200795fab37eSRobert Watson if (!mac_enforce_fs) 200895fab37eSRobert Watson return (0); 200995fab37eSRobert Watson 201095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 201195fab37eSRobert Watson if (error) 201295fab37eSRobert Watson return (error); 201395fab37eSRobert Watson 201495fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 201595fab37eSRobert Watson return (error); 201695fab37eSRobert Watson } 201795fab37eSRobert Watson 201895fab37eSRobert Watson int 201995fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 202095fab37eSRobert Watson struct acl *acl) 202195fab37eSRobert Watson { 202295fab37eSRobert Watson int error; 202395fab37eSRobert Watson 202495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 202595fab37eSRobert Watson 202695fab37eSRobert Watson if (!mac_enforce_fs) 202795fab37eSRobert Watson return (0); 202895fab37eSRobert Watson 202995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 203095fab37eSRobert Watson if (error) 203195fab37eSRobert Watson return (error); 203295fab37eSRobert Watson 203395fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 203495fab37eSRobert Watson return (error); 203595fab37eSRobert Watson } 203695fab37eSRobert Watson 203795fab37eSRobert Watson int 203895fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 203995fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 204095fab37eSRobert Watson { 204195fab37eSRobert Watson int error; 204295fab37eSRobert Watson 204395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 204495fab37eSRobert Watson 204595fab37eSRobert Watson if (!mac_enforce_fs) 204695fab37eSRobert Watson return (0); 204795fab37eSRobert Watson 204895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 204995fab37eSRobert Watson if (error) 205095fab37eSRobert Watson return (error); 205195fab37eSRobert Watson 205295fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 205395fab37eSRobert Watson attrnamespace, name, uio); 205495fab37eSRobert Watson return (error); 205595fab37eSRobert Watson } 205695fab37eSRobert Watson 205795fab37eSRobert Watson int 205895fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 205995fab37eSRobert Watson { 206095fab37eSRobert Watson int error; 206195fab37eSRobert Watson 206295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 206395fab37eSRobert Watson 206495fab37eSRobert Watson if (!mac_enforce_fs) 206595fab37eSRobert Watson return (0); 206695fab37eSRobert Watson 206795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 206895fab37eSRobert Watson if (error) 206995fab37eSRobert Watson return (error); 207095fab37eSRobert Watson 207195fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 207295fab37eSRobert Watson return (error); 207395fab37eSRobert Watson } 207495fab37eSRobert Watson 207595fab37eSRobert Watson int 207695fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 207795fab37eSRobert Watson { 207895fab37eSRobert Watson int error; 207995fab37eSRobert Watson 208095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 208195fab37eSRobert Watson 208295fab37eSRobert Watson if (!mac_enforce_fs) 208395fab37eSRobert Watson return (0); 208495fab37eSRobert Watson 208595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 208695fab37eSRobert Watson if (error) 208795fab37eSRobert Watson return (error); 208895fab37eSRobert Watson 208995fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 209095fab37eSRobert Watson return (error); 209195fab37eSRobert Watson } 209295fab37eSRobert Watson 209395fab37eSRobert Watson int 209495fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 209595fab37eSRobert Watson gid_t gid) 209695fab37eSRobert Watson { 209795fab37eSRobert Watson int error; 209895fab37eSRobert Watson 209995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 210095fab37eSRobert Watson 210195fab37eSRobert Watson if (!mac_enforce_fs) 210295fab37eSRobert Watson return (0); 210395fab37eSRobert Watson 210495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 210595fab37eSRobert Watson if (error) 210695fab37eSRobert Watson return (error); 210795fab37eSRobert Watson 210895fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 210995fab37eSRobert Watson return (error); 211095fab37eSRobert Watson } 211195fab37eSRobert Watson 211295fab37eSRobert Watson int 211395fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 211495fab37eSRobert Watson struct timespec atime, struct timespec mtime) 211595fab37eSRobert Watson { 211695fab37eSRobert Watson int error; 211795fab37eSRobert Watson 211895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 211995fab37eSRobert Watson 212095fab37eSRobert Watson if (!mac_enforce_fs) 212195fab37eSRobert Watson return (0); 212295fab37eSRobert Watson 212395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 212495fab37eSRobert Watson if (error) 212595fab37eSRobert Watson return (error); 212695fab37eSRobert Watson 212795fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 212895fab37eSRobert Watson mtime); 212995fab37eSRobert Watson return (error); 213095fab37eSRobert Watson } 213195fab37eSRobert Watson 213295fab37eSRobert Watson int 2133177142e4SRobert Watson mac_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 2134177142e4SRobert Watson struct vnode *vp) 213595fab37eSRobert Watson { 213695fab37eSRobert Watson int error; 213795fab37eSRobert Watson 213895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 213995fab37eSRobert Watson 214095fab37eSRobert Watson if (!mac_enforce_fs) 214195fab37eSRobert Watson return (0); 214295fab37eSRobert Watson 2143177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 214495fab37eSRobert Watson if (error) 214595fab37eSRobert Watson return (error); 214695fab37eSRobert Watson 2147177142e4SRobert Watson MAC_CHECK(check_vnode_stat, active_cred, file_cred, vp, 2148177142e4SRobert Watson &vp->v_label); 214995fab37eSRobert Watson return (error); 215095fab37eSRobert Watson } 215195fab37eSRobert Watson 21527f724f8bSRobert Watson int 2153177142e4SRobert Watson mac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred, 2154177142e4SRobert Watson struct vnode *vp) 21557f724f8bSRobert Watson { 21567f724f8bSRobert Watson int error; 21577f724f8bSRobert Watson 21587f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 21597f724f8bSRobert Watson 21607f724f8bSRobert Watson if (!mac_enforce_fs) 21617f724f8bSRobert Watson return (0); 21627f724f8bSRobert Watson 2163177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 21647f724f8bSRobert Watson if (error) 21657f724f8bSRobert Watson return (error); 21667f724f8bSRobert Watson 2167177142e4SRobert Watson MAC_CHECK(check_vnode_write, active_cred, file_cred, vp, 2168177142e4SRobert Watson &vp->v_label); 21697f724f8bSRobert Watson 21707f724f8bSRobert Watson return (error); 21717f724f8bSRobert Watson } 21727f724f8bSRobert Watson 217395fab37eSRobert Watson /* 217495fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 217595fab37eSRobert Watson * permission allowed for each object type we know about in its 217695fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 217795fab37eSRobert Watson * know) when necessary. The process lock is not held here. 217895fab37eSRobert Watson */ 217995fab37eSRobert Watson static void 218095fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 218195fab37eSRobert Watson { 218295fab37eSRobert Watson 218395fab37eSRobert Watson /* XXX freeze all other threads */ 218495fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 218595fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 218695fab37eSRobert Watson /* XXX allow other threads to continue */ 218795fab37eSRobert Watson } 218895fab37eSRobert Watson 218995fab37eSRobert Watson static __inline const char * 219095fab37eSRobert Watson prot2str(vm_prot_t prot) 219195fab37eSRobert Watson { 219295fab37eSRobert Watson 219395fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 219495fab37eSRobert Watson case VM_PROT_READ: 219595fab37eSRobert Watson return ("r--"); 219695fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 219795fab37eSRobert Watson return ("rw-"); 219895fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 219995fab37eSRobert Watson return ("r-x"); 220095fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 220195fab37eSRobert Watson return ("rwx"); 220295fab37eSRobert Watson case VM_PROT_WRITE: 220395fab37eSRobert Watson return ("-w-"); 220495fab37eSRobert Watson case VM_PROT_EXECUTE: 220595fab37eSRobert Watson return ("--x"); 220695fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 220795fab37eSRobert Watson return ("-wx"); 220895fab37eSRobert Watson default: 220995fab37eSRobert Watson return ("---"); 221095fab37eSRobert Watson } 221195fab37eSRobert Watson } 221295fab37eSRobert Watson 221395fab37eSRobert Watson static void 221495fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 221595fab37eSRobert Watson struct vm_map *map) 221695fab37eSRobert Watson { 221795fab37eSRobert Watson struct vm_map_entry *vme; 221895fab37eSRobert Watson vm_prot_t result, revokeperms; 221995fab37eSRobert Watson vm_object_t object; 222095fab37eSRobert Watson vm_ooffset_t offset; 222195fab37eSRobert Watson struct vnode *vp; 222295fab37eSRobert Watson 2223c0f39905SRobert Watson if (!mac_mmap_revocation) 2224c0f39905SRobert Watson return; 2225c0f39905SRobert Watson 222695fab37eSRobert Watson vm_map_lock_read(map); 222795fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 222895fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 222995fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 223095fab37eSRobert Watson vme->object.sub_map); 223195fab37eSRobert Watson continue; 223295fab37eSRobert Watson } 223395fab37eSRobert Watson /* 223495fab37eSRobert Watson * Skip over entries that obviously are not shared. 223595fab37eSRobert Watson */ 223695fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 223795fab37eSRobert Watson !vme->max_protection) 223895fab37eSRobert Watson continue; 223995fab37eSRobert Watson /* 224095fab37eSRobert Watson * Drill down to the deepest backing object. 224195fab37eSRobert Watson */ 224295fab37eSRobert Watson offset = vme->offset; 224395fab37eSRobert Watson object = vme->object.vm_object; 224495fab37eSRobert Watson if (object == NULL) 224595fab37eSRobert Watson continue; 224695fab37eSRobert Watson while (object->backing_object != NULL) { 224795fab37eSRobert Watson object = object->backing_object; 224895fab37eSRobert Watson offset += object->backing_object_offset; 224995fab37eSRobert Watson } 225095fab37eSRobert Watson /* 225195fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 225295fab37eSRobert Watson * by the MAC system, so only things with backing by a 225395fab37eSRobert Watson * normal object (read: vnodes) are checked. 225495fab37eSRobert Watson */ 225595fab37eSRobert Watson if (object->type != OBJT_VNODE) 225695fab37eSRobert Watson continue; 225795fab37eSRobert Watson vp = (struct vnode *)object->handle; 225895fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 225995fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 226095fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 226195fab37eSRobert Watson /* 226295fab37eSRobert Watson * Find out what maximum protection we may be allowing 226395fab37eSRobert Watson * now but a policy needs to get removed. 226495fab37eSRobert Watson */ 226595fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 226695fab37eSRobert Watson if (!revokeperms) 226795fab37eSRobert Watson continue; 2268b656366bSBruce Evans printf("pid %ld: revoking %s perms from %#lx:%ld " 2269b656366bSBruce Evans "(max %s/cur %s)\n", (long)td->td_proc->p_pid, 2270b656366bSBruce Evans prot2str(revokeperms), (u_long)vme->start, 2271b656366bSBruce Evans (long)(vme->end - vme->start), 227295fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 227395fab37eSRobert Watson vm_map_lock_upgrade(map); 227495fab37eSRobert Watson /* 227595fab37eSRobert Watson * This is the really simple case: if a map has more 227695fab37eSRobert Watson * max_protection than is allowed, but it's not being 227795fab37eSRobert Watson * actually used (that is, the current protection is 227895fab37eSRobert Watson * still allowed), we can just wipe it out and do 227995fab37eSRobert Watson * nothing more. 228095fab37eSRobert Watson */ 228195fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 228295fab37eSRobert Watson vme->max_protection -= revokeperms; 228395fab37eSRobert Watson } else { 228495fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 228595fab37eSRobert Watson /* 228695fab37eSRobert Watson * In the more complicated case, flush out all 228795fab37eSRobert Watson * pending changes to the object then turn it 228895fab37eSRobert Watson * copy-on-write. 228995fab37eSRobert Watson */ 229095fab37eSRobert Watson vm_object_reference(object); 229195fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 229295fab37eSRobert Watson vm_object_page_clean(object, 229395fab37eSRobert Watson OFF_TO_IDX(offset), 229495fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 229595fab37eSRobert Watson PAGE_MASK), 229695fab37eSRobert Watson OBJPC_SYNC); 229795fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 229895fab37eSRobert Watson vm_object_deallocate(object); 229995fab37eSRobert Watson /* 230095fab37eSRobert Watson * Why bother if there's no read permissions 230195fab37eSRobert Watson * anymore? For the rest, we need to leave 230295fab37eSRobert Watson * the write permissions on for COW, or 230395fab37eSRobert Watson * remove them entirely if configured to. 230495fab37eSRobert Watson */ 230595fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 230695fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 230795fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 230895fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 230995fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 231095fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 231195fab37eSRobert Watson } 231295fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 231395fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 231495fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 231595fab37eSRobert Watson } 231695fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 231795fab37eSRobert Watson vme->max_protection = 0; 231895fab37eSRobert Watson vme->protection = 0; 231995fab37eSRobert Watson } 232095fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 232195fab37eSRobert Watson vme->protection & ~revokeperms); 232295fab37eSRobert Watson vm_map_simplify_entry(map, vme); 232395fab37eSRobert Watson } 232495fab37eSRobert Watson vm_map_lock_downgrade(map); 232595fab37eSRobert Watson } 232695fab37eSRobert Watson vm_map_unlock_read(map); 232795fab37eSRobert Watson } 232895fab37eSRobert Watson 232995fab37eSRobert Watson /* 233095fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 233195fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 233295fab37eSRobert Watson * buffer cache. 233395fab37eSRobert Watson */ 233495fab37eSRobert Watson static void 233595fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 233695fab37eSRobert Watson { 233795fab37eSRobert Watson 233895fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 233995fab37eSRobert Watson } 234095fab37eSRobert Watson 234195fab37eSRobert Watson void 234295fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 234395fab37eSRobert Watson { 234495fab37eSRobert Watson 234595fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 234695fab37eSRobert Watson } 234795fab37eSRobert Watson 234895fab37eSRobert Watson void 234995fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 235095fab37eSRobert Watson { 235195fab37eSRobert Watson 235295fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 235395fab37eSRobert Watson } 235495fab37eSRobert Watson 235595fab37eSRobert Watson void 235695fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 235795fab37eSRobert Watson { 235895fab37eSRobert Watson 235995fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 236095fab37eSRobert Watson } 236195fab37eSRobert Watson 236295fab37eSRobert Watson void 236395fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 236495fab37eSRobert Watson { 236595fab37eSRobert Watson 236695fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 236795fab37eSRobert Watson } 236895fab37eSRobert Watson 236995fab37eSRobert Watson void 237095fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 237195fab37eSRobert Watson { 237295fab37eSRobert Watson 237395fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 237495fab37eSRobert Watson } 237595fab37eSRobert Watson 237695fab37eSRobert Watson void 237795fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 237895fab37eSRobert Watson struct socket *newsocket) 237995fab37eSRobert Watson { 238095fab37eSRobert Watson 238195fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 238295fab37eSRobert Watson newsocket, &newsocket->so_label); 238395fab37eSRobert Watson } 238495fab37eSRobert Watson 238595fab37eSRobert Watson static void 238695fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 238795fab37eSRobert Watson struct label *newlabel) 238895fab37eSRobert Watson { 238995fab37eSRobert Watson 239095fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 239195fab37eSRobert Watson } 239295fab37eSRobert Watson 239395fab37eSRobert Watson static void 239495fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 239595fab37eSRobert Watson { 239695fab37eSRobert Watson 239795fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 239895fab37eSRobert Watson } 239995fab37eSRobert Watson 240095fab37eSRobert Watson void 240195fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 240295fab37eSRobert Watson { 240395fab37eSRobert Watson 240495fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 240595fab37eSRobert Watson socket, &socket->so_peerlabel); 240695fab37eSRobert Watson } 240795fab37eSRobert Watson 240895fab37eSRobert Watson void 240995fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 241095fab37eSRobert Watson struct socket *newsocket) 241195fab37eSRobert Watson { 241295fab37eSRobert Watson 241395fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 241495fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 241595fab37eSRobert Watson } 241695fab37eSRobert Watson 241795fab37eSRobert Watson void 241895fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 241995fab37eSRobert Watson { 242095fab37eSRobert Watson 242195fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 242295fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 242395fab37eSRobert Watson } 242495fab37eSRobert Watson 242595fab37eSRobert Watson void 242695fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 242795fab37eSRobert Watson { 242895fab37eSRobert Watson 242995fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 243095fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 243195fab37eSRobert Watson } 243295fab37eSRobert Watson 243395fab37eSRobert Watson void 243495fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 243595fab37eSRobert Watson { 243695fab37eSRobert Watson 243795fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 243895fab37eSRobert Watson &ipq->ipq_label); 243995fab37eSRobert Watson } 244095fab37eSRobert Watson 244195fab37eSRobert Watson void 244295fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 244395fab37eSRobert Watson { 244495fab37eSRobert Watson 244595fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 244695fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 244795fab37eSRobert Watson } 244895fab37eSRobert Watson 244995fab37eSRobert Watson void 245095fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 245195fab37eSRobert Watson { 245295fab37eSRobert Watson 245395fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 245495fab37eSRobert Watson &mbuf->m_pkthdr.label); 245595fab37eSRobert Watson } 245695fab37eSRobert Watson 245795fab37eSRobert Watson void 245895fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 245995fab37eSRobert Watson { 246095fab37eSRobert Watson 246195fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 246295fab37eSRobert Watson &mbuf->m_pkthdr.label); 246395fab37eSRobert Watson } 246495fab37eSRobert Watson 246595fab37eSRobert Watson void 246695fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 246795fab37eSRobert Watson { 246895fab37eSRobert Watson 246995fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 247095fab37eSRobert Watson &mbuf->m_pkthdr.label); 247195fab37eSRobert Watson } 247295fab37eSRobert Watson 247395fab37eSRobert Watson void 247495fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 247595fab37eSRobert Watson struct mbuf *newmbuf) 247695fab37eSRobert Watson { 247795fab37eSRobert Watson 247895fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 247995fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 248095fab37eSRobert Watson &newmbuf->m_pkthdr.label); 248195fab37eSRobert Watson } 248295fab37eSRobert Watson 248395fab37eSRobert Watson void 248495fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 248595fab37eSRobert Watson { 248695fab37eSRobert Watson 248795fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 248895fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 248995fab37eSRobert Watson } 249095fab37eSRobert Watson 249195fab37eSRobert Watson int 249295fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 249395fab37eSRobert Watson { 249495fab37eSRobert Watson int result; 249595fab37eSRobert Watson 249695fab37eSRobert Watson result = 1; 249795fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 249895fab37eSRobert Watson ipq, &ipq->ipq_label); 249995fab37eSRobert Watson 250095fab37eSRobert Watson return (result); 250195fab37eSRobert Watson } 250295fab37eSRobert Watson 250395fab37eSRobert Watson void 250495fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 250595fab37eSRobert Watson { 250695fab37eSRobert Watson 250795fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 250895fab37eSRobert Watson &ipq->ipq_label); 250995fab37eSRobert Watson } 251095fab37eSRobert Watson 251195fab37eSRobert Watson void 251295fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 251395fab37eSRobert Watson { 251495fab37eSRobert Watson 251595fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 251695fab37eSRobert Watson &mbuf->m_pkthdr.label); 251795fab37eSRobert Watson } 251895fab37eSRobert Watson 251995fab37eSRobert Watson void 252095fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 252195fab37eSRobert Watson { 252295fab37eSRobert Watson 252395fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 252495fab37eSRobert Watson &mp->mnt_fslabel); 252595fab37eSRobert Watson } 252695fab37eSRobert Watson 252795fab37eSRobert Watson void 252895fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 252995fab37eSRobert Watson { 253095fab37eSRobert Watson 253195fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 253295fab37eSRobert Watson &mp->mnt_fslabel); 253395fab37eSRobert Watson } 253495fab37eSRobert Watson 253595fab37eSRobert Watson int 253695fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 253795fab37eSRobert Watson { 253895fab37eSRobert Watson int error; 253995fab37eSRobert Watson 254095fab37eSRobert Watson if (!mac_enforce_network) 254195fab37eSRobert Watson return (0); 254295fab37eSRobert Watson 254395fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 254495fab37eSRobert Watson &ifnet->if_label); 254595fab37eSRobert Watson 254695fab37eSRobert Watson return (error); 254795fab37eSRobert Watson } 254895fab37eSRobert Watson 254995fab37eSRobert Watson static int 255095fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 255195fab37eSRobert Watson { 255295fab37eSRobert Watson int error; 255395fab37eSRobert Watson 255495fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 255595fab37eSRobert Watson 255695fab37eSRobert Watson return (error); 255795fab37eSRobert Watson } 255895fab37eSRobert Watson 255995fab37eSRobert Watson int 256095fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 256195fab37eSRobert Watson { 256295fab37eSRobert Watson int error; 256395fab37eSRobert Watson 256495fab37eSRobert Watson if (!mac_enforce_process) 256595fab37eSRobert Watson return (0); 256695fab37eSRobert Watson 256795fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 256895fab37eSRobert Watson 256995fab37eSRobert Watson return (error); 257095fab37eSRobert Watson } 257195fab37eSRobert Watson 257295fab37eSRobert Watson int 257395fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 257495fab37eSRobert Watson { 257595fab37eSRobert Watson int error; 257695fab37eSRobert Watson 257795fab37eSRobert Watson if (!mac_enforce_network) 257895fab37eSRobert Watson return (0); 257995fab37eSRobert Watson 258095fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 258195fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 258295fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 258395fab37eSRobert Watson ifnet->if_unit); 258495fab37eSRobert Watson 258595fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 258695fab37eSRobert Watson &mbuf->m_pkthdr.label); 258795fab37eSRobert Watson 258895fab37eSRobert Watson return (error); 258995fab37eSRobert Watson } 259095fab37eSRobert Watson 259195fab37eSRobert Watson int 259295fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 259395fab37eSRobert Watson { 259495fab37eSRobert Watson int error; 259595fab37eSRobert Watson 259695fab37eSRobert Watson if (!mac_enforce_fs) 259795fab37eSRobert Watson return (0); 259895fab37eSRobert Watson 259995fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 260095fab37eSRobert Watson 260195fab37eSRobert Watson return (error); 260295fab37eSRobert Watson } 260395fab37eSRobert Watson 260495fab37eSRobert Watson int 260595fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 260695fab37eSRobert Watson void *data) 260795fab37eSRobert Watson { 260895fab37eSRobert Watson int error; 260995fab37eSRobert Watson 26101aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26111aa37f53SRobert Watson 26121aa37f53SRobert Watson if (!mac_enforce_pipe) 26131aa37f53SRobert Watson return (0); 26141aa37f53SRobert Watson 261595fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 261695fab37eSRobert Watson 261795fab37eSRobert Watson return (error); 261895fab37eSRobert Watson } 261995fab37eSRobert Watson 262095fab37eSRobert Watson int 2621c024c3eeSRobert Watson mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe) 262295fab37eSRobert Watson { 262395fab37eSRobert Watson int error; 262495fab37eSRobert Watson 26251aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26261aa37f53SRobert Watson 26271aa37f53SRobert Watson if (!mac_enforce_pipe) 26281aa37f53SRobert Watson return (0); 26291aa37f53SRobert Watson 2630c024c3eeSRobert Watson MAC_CHECK(check_pipe_poll, cred, pipe, pipe->pipe_label); 2631c024c3eeSRobert Watson 2632c024c3eeSRobert Watson return (error); 2633c024c3eeSRobert Watson } 2634c024c3eeSRobert Watson 2635c024c3eeSRobert Watson int 2636c024c3eeSRobert Watson mac_check_pipe_read(struct ucred *cred, struct pipe *pipe) 2637c024c3eeSRobert Watson { 2638c024c3eeSRobert Watson int error; 2639c024c3eeSRobert Watson 26401aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26411aa37f53SRobert Watson 26421aa37f53SRobert Watson if (!mac_enforce_pipe) 26431aa37f53SRobert Watson return (0); 26441aa37f53SRobert Watson 2645c024c3eeSRobert Watson MAC_CHECK(check_pipe_read, cred, pipe, pipe->pipe_label); 264695fab37eSRobert Watson 264795fab37eSRobert Watson return (error); 264895fab37eSRobert Watson } 264995fab37eSRobert Watson 265095fab37eSRobert Watson static int 265195fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 265295fab37eSRobert Watson struct label *newlabel) 265395fab37eSRobert Watson { 265495fab37eSRobert Watson int error; 265595fab37eSRobert Watson 26561aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26571aa37f53SRobert Watson 26581aa37f53SRobert Watson if (!mac_enforce_pipe) 26591aa37f53SRobert Watson return (0); 26601aa37f53SRobert Watson 266195fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 266295fab37eSRobert Watson 266395fab37eSRobert Watson return (error); 266495fab37eSRobert Watson } 266595fab37eSRobert Watson 266695fab37eSRobert Watson int 2667c024c3eeSRobert Watson mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe) 2668c024c3eeSRobert Watson { 2669c024c3eeSRobert Watson int error; 2670c024c3eeSRobert Watson 26711aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26721aa37f53SRobert Watson 26731aa37f53SRobert Watson if (!mac_enforce_pipe) 26741aa37f53SRobert Watson return (0); 26751aa37f53SRobert Watson 2676c024c3eeSRobert Watson MAC_CHECK(check_pipe_stat, cred, pipe, pipe->pipe_label); 2677c024c3eeSRobert Watson 2678c024c3eeSRobert Watson return (error); 2679c024c3eeSRobert Watson } 2680c024c3eeSRobert Watson 2681c024c3eeSRobert Watson int 2682c024c3eeSRobert Watson mac_check_pipe_write(struct ucred *cred, struct pipe *pipe) 2683c024c3eeSRobert Watson { 2684c024c3eeSRobert Watson int error; 2685c024c3eeSRobert Watson 26861aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26871aa37f53SRobert Watson 26881aa37f53SRobert Watson if (!mac_enforce_pipe) 26891aa37f53SRobert Watson return (0); 26901aa37f53SRobert Watson 2691c024c3eeSRobert Watson MAC_CHECK(check_pipe_write, cred, pipe, pipe->pipe_label); 2692c024c3eeSRobert Watson 2693c024c3eeSRobert Watson return (error); 2694c024c3eeSRobert Watson } 2695c024c3eeSRobert Watson 2696c024c3eeSRobert Watson int 269795fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 269895fab37eSRobert Watson { 269995fab37eSRobert Watson int error; 270095fab37eSRobert Watson 2701b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2702b12baf55SRobert Watson 270395fab37eSRobert Watson if (!mac_enforce_process) 270495fab37eSRobert Watson return (0); 270595fab37eSRobert Watson 270695fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 270795fab37eSRobert Watson 270895fab37eSRobert Watson return (error); 270995fab37eSRobert Watson } 271095fab37eSRobert Watson 271195fab37eSRobert Watson int 271295fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 271395fab37eSRobert Watson { 271495fab37eSRobert Watson int error; 271595fab37eSRobert Watson 2716b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2717b12baf55SRobert Watson 271895fab37eSRobert Watson if (!mac_enforce_process) 271995fab37eSRobert Watson return (0); 272095fab37eSRobert Watson 272195fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 272295fab37eSRobert Watson 272395fab37eSRobert Watson return (error); 272495fab37eSRobert Watson } 272595fab37eSRobert Watson 272695fab37eSRobert Watson int 272795fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 272895fab37eSRobert Watson { 272995fab37eSRobert Watson int error; 273095fab37eSRobert Watson 2731b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2732b12baf55SRobert Watson 273395fab37eSRobert Watson if (!mac_enforce_process) 273495fab37eSRobert Watson return (0); 273595fab37eSRobert Watson 273695fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 273795fab37eSRobert Watson 273895fab37eSRobert Watson return (error); 273995fab37eSRobert Watson } 274095fab37eSRobert Watson 274195fab37eSRobert Watson int 274295fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 274395fab37eSRobert Watson struct sockaddr *sockaddr) 274495fab37eSRobert Watson { 274595fab37eSRobert Watson int error; 274695fab37eSRobert Watson 274795fab37eSRobert Watson if (!mac_enforce_socket) 274895fab37eSRobert Watson return (0); 274995fab37eSRobert Watson 275095fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 275195fab37eSRobert Watson sockaddr); 275295fab37eSRobert Watson 275395fab37eSRobert Watson return (error); 275495fab37eSRobert Watson } 275595fab37eSRobert Watson 275695fab37eSRobert Watson int 275795fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 275895fab37eSRobert Watson struct sockaddr *sockaddr) 275995fab37eSRobert Watson { 276095fab37eSRobert Watson int error; 276195fab37eSRobert Watson 276295fab37eSRobert Watson if (!mac_enforce_socket) 276395fab37eSRobert Watson return (0); 276495fab37eSRobert Watson 276595fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 276695fab37eSRobert Watson sockaddr); 276795fab37eSRobert Watson 276895fab37eSRobert Watson return (error); 276995fab37eSRobert Watson } 277095fab37eSRobert Watson 277195fab37eSRobert Watson int 2772d61198e4SRobert Watson mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2773d61198e4SRobert Watson { 2774d61198e4SRobert Watson int error; 2775d61198e4SRobert Watson 2776d61198e4SRobert Watson if (!mac_enforce_socket) 2777d61198e4SRobert Watson return (0); 2778d61198e4SRobert Watson 2779d61198e4SRobert Watson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2780d61198e4SRobert Watson &mbuf->m_pkthdr.label); 2781d61198e4SRobert Watson 2782d61198e4SRobert Watson return (error); 2783d61198e4SRobert Watson } 2784d61198e4SRobert Watson 2785d61198e4SRobert Watson int 278695fab37eSRobert Watson mac_check_socket_listen(struct ucred *cred, struct socket *socket) 278795fab37eSRobert Watson { 278895fab37eSRobert Watson int error; 278995fab37eSRobert Watson 279095fab37eSRobert Watson if (!mac_enforce_socket) 279195fab37eSRobert Watson return (0); 279295fab37eSRobert Watson 279395fab37eSRobert Watson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 279495fab37eSRobert Watson return (error); 279595fab37eSRobert Watson } 279695fab37eSRobert Watson 279795fab37eSRobert Watson static int 279895fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 279995fab37eSRobert Watson struct label *newlabel) 280095fab37eSRobert Watson { 280195fab37eSRobert Watson int error; 280295fab37eSRobert Watson 280395fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 280495fab37eSRobert Watson newlabel); 280595fab37eSRobert Watson 280695fab37eSRobert Watson return (error); 280795fab37eSRobert Watson } 280895fab37eSRobert Watson 280995fab37eSRobert Watson int 281095fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 281195fab37eSRobert Watson { 281295fab37eSRobert Watson int error; 281395fab37eSRobert Watson 281495fab37eSRobert Watson if (!mac_enforce_socket) 281595fab37eSRobert Watson return (0); 281695fab37eSRobert Watson 281795fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 281895fab37eSRobert Watson 281995fab37eSRobert Watson return (error); 282095fab37eSRobert Watson } 282195fab37eSRobert Watson 282295fab37eSRobert Watson int 282395fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 282495fab37eSRobert Watson struct ifnet *ifnet) 282595fab37eSRobert Watson { 282695fab37eSRobert Watson struct mac label; 282795fab37eSRobert Watson int error; 282895fab37eSRobert Watson 282995fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 283095fab37eSRobert Watson if (error) 283195fab37eSRobert Watson return (error); 283295fab37eSRobert Watson 283395fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 283495fab37eSRobert Watson } 283595fab37eSRobert Watson 283695fab37eSRobert Watson int 283795fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 283895fab37eSRobert Watson struct ifnet *ifnet) 283995fab37eSRobert Watson { 284095fab37eSRobert Watson struct mac newlabel; 284195fab37eSRobert Watson struct label intlabel; 284295fab37eSRobert Watson int error; 284395fab37eSRobert Watson 284495fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 284595fab37eSRobert Watson if (error) 284695fab37eSRobert Watson return (error); 284795fab37eSRobert Watson 284895fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 284995fab37eSRobert Watson if (error) 285095fab37eSRobert Watson return (error); 285195fab37eSRobert Watson 285295fab37eSRobert Watson /* 285395fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 285495fab37eSRobert Watson * policies impose this check themselves if required by the 285595fab37eSRobert Watson * policy. Eventually, this should go away. 285695fab37eSRobert Watson */ 285795fab37eSRobert Watson error = suser_cred(cred, 0); 285895fab37eSRobert Watson if (error) 285995fab37eSRobert Watson goto out; 286095fab37eSRobert Watson 286195fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 286295fab37eSRobert Watson &intlabel); 286395fab37eSRobert Watson if (error) 286495fab37eSRobert Watson goto out; 286595fab37eSRobert Watson 286695fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 286795fab37eSRobert Watson 286895fab37eSRobert Watson out: 286995fab37eSRobert Watson mac_destroy_temp(&intlabel); 287095fab37eSRobert Watson return (error); 287195fab37eSRobert Watson } 287295fab37eSRobert Watson 287395fab37eSRobert Watson void 287495fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 287595fab37eSRobert Watson { 287695fab37eSRobert Watson 287795fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 287895fab37eSRobert Watson } 287995fab37eSRobert Watson 288095fab37eSRobert Watson void 288195fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 288295fab37eSRobert Watson { 288395fab37eSRobert Watson 288495fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 288595fab37eSRobert Watson } 288695fab37eSRobert Watson 288795fab37eSRobert Watson static int 288895fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 288995fab37eSRobert Watson { 289095fab37eSRobert Watson int error; 289195fab37eSRobert Watson 289295fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 289395fab37eSRobert Watson 289495fab37eSRobert Watson return (error); 289595fab37eSRobert Watson } 289695fab37eSRobert Watson 289795fab37eSRobert Watson void 289895fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 289995fab37eSRobert Watson struct devfs_dirent *de) 290095fab37eSRobert Watson { 290195fab37eSRobert Watson 290295fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 290395fab37eSRobert Watson &de->de_label); 290495fab37eSRobert Watson } 290595fab37eSRobert Watson 290695fab37eSRobert Watson /* 290795fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 290895fab37eSRobert Watson */ 290995fab37eSRobert Watson void 291095fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 291195fab37eSRobert Watson struct vnode *child) 291295fab37eSRobert Watson { 291395fab37eSRobert Watson int error; 291495fab37eSRobert Watson 291595fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 291695fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 291795fab37eSRobert Watson 291895fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 291995fab37eSRobert Watson if (error) { 292095fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 292195fab37eSRobert Watson error); 292295fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 292395fab37eSRobert Watson } 292495fab37eSRobert Watson 292595fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 292695fab37eSRobert Watson &child->v_label); 292795fab37eSRobert Watson } 292895fab37eSRobert Watson 292995fab37eSRobert Watson int 293095fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 293195fab37eSRobert Watson struct mac *extmac) 293295fab37eSRobert Watson { 293395fab37eSRobert Watson struct label intlabel; 293495fab37eSRobert Watson int error; 293595fab37eSRobert Watson 293695fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 293795fab37eSRobert Watson if (error) 293895fab37eSRobert Watson return (error); 293995fab37eSRobert Watson 294095fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 294195fab37eSRobert Watson if (error) { 294295fab37eSRobert Watson mac_destroy_temp(&intlabel); 294395fab37eSRobert Watson return (error); 294495fab37eSRobert Watson } 294595fab37eSRobert Watson 294695fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 294795fab37eSRobert Watson 294895fab37eSRobert Watson mac_destroy_temp(&intlabel); 294995fab37eSRobert Watson return (0); 295095fab37eSRobert Watson } 295195fab37eSRobert Watson 295295fab37eSRobert Watson int 295395fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 295495fab37eSRobert Watson { 295595fab37eSRobert Watson int error; 295695fab37eSRobert Watson 29571aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 29581aa37f53SRobert Watson 295995fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 296095fab37eSRobert Watson if (error) 296195fab37eSRobert Watson return (error); 296295fab37eSRobert Watson 296395fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 296495fab37eSRobert Watson 296595fab37eSRobert Watson return (0); 296695fab37eSRobert Watson } 296795fab37eSRobert Watson 296895fab37eSRobert Watson int 296995fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 297095fab37eSRobert Watson struct mac *extmac) 297195fab37eSRobert Watson { 297295fab37eSRobert Watson 297395fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 297495fab37eSRobert Watson } 297595fab37eSRobert Watson 297695fab37eSRobert Watson int 297795fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 297895fab37eSRobert Watson struct mac *extmac) 297995fab37eSRobert Watson { 298095fab37eSRobert Watson 298195fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 298295fab37eSRobert Watson } 298395fab37eSRobert Watson 298495fab37eSRobert Watson /* 298595fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 298695fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 298795fab37eSRobert Watson * extended attributes. 298895fab37eSRobert Watson */ 298995fab37eSRobert Watson int 299095fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 299195fab37eSRobert Watson { 299295fab37eSRobert Watson struct vnode *vp = ap->a_vp; 299395fab37eSRobert Watson struct label *intlabel = ap->a_label; 299495fab37eSRobert Watson struct mac extmac; 299595fab37eSRobert Watson int error; 299695fab37eSRobert Watson 299795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 299895fab37eSRobert Watson 299995fab37eSRobert Watson /* 300095fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 300195fab37eSRobert Watson * Be particularly careful to avoid race conditions, 300295fab37eSRobert Watson * consistency problems, and stability problems when 300395fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 300495fab37eSRobert Watson * the ability to write multiple EAs on the same file in 300595fab37eSRobert Watson * a single transaction, which the current EA interface 300695fab37eSRobert Watson * does not provide. 300795fab37eSRobert Watson */ 300895fab37eSRobert Watson 300995fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 301095fab37eSRobert Watson if (error) 301195fab37eSRobert Watson return (error); 301295fab37eSRobert Watson 301395fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 301495fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 301595fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 301695fab37eSRobert Watson if (error) 301795fab37eSRobert Watson return (error); 301895fab37eSRobert Watson 301995fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 302095fab37eSRobert Watson 3021e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 302295fab37eSRobert Watson 302395fab37eSRobert Watson return (0); 302495fab37eSRobert Watson } 302595fab37eSRobert Watson 302695fab37eSRobert Watson static int 302795fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 302895fab37eSRobert Watson { 302995fab37eSRobert Watson int error; 303095fab37eSRobert Watson 303195fab37eSRobert Watson if (vp->v_mount == NULL) { 303295fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 303306be2aaaSNate Lawson if (vp->v_type != VNON) 303406be2aaaSNate Lawson printf("vn_setlabel: null v_mount with non-VNON\n"); 303595fab37eSRobert Watson return (EBADF); 303695fab37eSRobert Watson } 303795fab37eSRobert Watson 303895fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 303995fab37eSRobert Watson return (EOPNOTSUPP); 304095fab37eSRobert Watson 304195fab37eSRobert Watson /* 304295fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 304395fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 304495fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 304595fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 304695fab37eSRobert Watson */ 304795fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 304895fab37eSRobert Watson if (error) 304995fab37eSRobert Watson return (error); 305095fab37eSRobert Watson 305195fab37eSRobert Watson /* 305295fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 305395fab37eSRobert Watson * decisions about who is and is not able to modify labels 305495fab37eSRobert Watson * and protections on files. This might not be right. We can't 305595fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 305695fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 305795fab37eSRobert Watson */ 305895fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 305995fab37eSRobert Watson if (error) 306095fab37eSRobert Watson return (error); 306195fab37eSRobert Watson 306295fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 306395fab37eSRobert Watson if (error) 306495fab37eSRobert Watson return (error); 306595fab37eSRobert Watson 306695fab37eSRobert Watson return (0); 306795fab37eSRobert Watson } 306895fab37eSRobert Watson 306995fab37eSRobert Watson /* 307095fab37eSRobert Watson * MPSAFE 307195fab37eSRobert Watson */ 307295fab37eSRobert Watson int 307395fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 307495fab37eSRobert Watson { 307595fab37eSRobert Watson struct mac extmac; 307695fab37eSRobert Watson int error; 307795fab37eSRobert Watson 307895fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 307995fab37eSRobert Watson if (error == 0) 308095fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 308195fab37eSRobert Watson 308295fab37eSRobert Watson return (error); 308395fab37eSRobert Watson } 308495fab37eSRobert Watson 308595fab37eSRobert Watson /* 308695fab37eSRobert Watson * MPSAFE 308795fab37eSRobert Watson */ 308895fab37eSRobert Watson int 308995fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 309095fab37eSRobert Watson { 309195fab37eSRobert Watson struct ucred *newcred, *oldcred; 309295fab37eSRobert Watson struct proc *p; 309395fab37eSRobert Watson struct mac extmac; 309495fab37eSRobert Watson struct label intlabel; 309595fab37eSRobert Watson int error; 309695fab37eSRobert Watson 309795fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 309895fab37eSRobert Watson if (error) 309995fab37eSRobert Watson return (error); 310095fab37eSRobert Watson 310195fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 310295fab37eSRobert Watson if (error) 310395fab37eSRobert Watson return (error); 310495fab37eSRobert Watson 310595fab37eSRobert Watson newcred = crget(); 310695fab37eSRobert Watson 310795fab37eSRobert Watson p = td->td_proc; 310895fab37eSRobert Watson PROC_LOCK(p); 310995fab37eSRobert Watson oldcred = p->p_ucred; 311095fab37eSRobert Watson 311195fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 311295fab37eSRobert Watson if (error) { 311395fab37eSRobert Watson PROC_UNLOCK(p); 311495fab37eSRobert Watson mac_destroy_temp(&intlabel); 311595fab37eSRobert Watson crfree(newcred); 311695fab37eSRobert Watson return (error); 311795fab37eSRobert Watson } 311895fab37eSRobert Watson 311995fab37eSRobert Watson setsugid(p); 312095fab37eSRobert Watson crcopy(newcred, oldcred); 312195fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 312295fab37eSRobert Watson p->p_ucred = newcred; 3123e5cb5e37SRobert Watson 3124e5cb5e37SRobert Watson /* 3125e5cb5e37SRobert Watson * Grab additional reference for use while revoking mmaps, prior 3126e5cb5e37SRobert Watson * to releasing the proc lock and sharing the cred. 3127e5cb5e37SRobert Watson */ 3128e5cb5e37SRobert Watson crhold(newcred); 312995fab37eSRobert Watson PROC_UNLOCK(p); 3130e5cb5e37SRobert Watson 313116140035SRobert Watson mtx_lock(&Giant); 3132e5cb5e37SRobert Watson mac_cred_mmapped_drop_perms(td, newcred); 313316140035SRobert Watson mtx_unlock(&Giant); 3134e5cb5e37SRobert Watson 3135e5cb5e37SRobert Watson crfree(newcred); /* Free revocation reference. */ 313695fab37eSRobert Watson crfree(oldcred); 313795fab37eSRobert Watson mac_destroy_temp(&intlabel); 313895fab37eSRobert Watson return (0); 313995fab37eSRobert Watson } 314095fab37eSRobert Watson 314195fab37eSRobert Watson /* 314295fab37eSRobert Watson * MPSAFE 314395fab37eSRobert Watson */ 314495fab37eSRobert Watson int 314595fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 314695fab37eSRobert Watson { 314795fab37eSRobert Watson struct file *fp; 314895fab37eSRobert Watson struct mac extmac; 314995fab37eSRobert Watson struct vnode *vp; 315095fab37eSRobert Watson struct pipe *pipe; 315195fab37eSRobert Watson int error; 315295fab37eSRobert Watson 315395fab37eSRobert Watson mtx_lock(&Giant); 315495fab37eSRobert Watson 315595fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 315695fab37eSRobert Watson if (error) 315795fab37eSRobert Watson goto out; 315895fab37eSRobert Watson 315995fab37eSRobert Watson switch (fp->f_type) { 316095fab37eSRobert Watson case DTYPE_FIFO: 316195fab37eSRobert Watson case DTYPE_VNODE: 316295fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 316395fab37eSRobert Watson 316495fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 316595fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 316695fab37eSRobert Watson if (error == 0) 316795fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 316895fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 316995fab37eSRobert Watson break; 317095fab37eSRobert Watson case DTYPE_PIPE: 317195fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 317295fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 317395fab37eSRobert Watson break; 317495fab37eSRobert Watson default: 317595fab37eSRobert Watson error = EINVAL; 317695fab37eSRobert Watson } 317795fab37eSRobert Watson 317895fab37eSRobert Watson if (error == 0) 317995fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 318095fab37eSRobert Watson 318195fab37eSRobert Watson fdrop(fp, td); 318295fab37eSRobert Watson 318395fab37eSRobert Watson out: 318495fab37eSRobert Watson mtx_unlock(&Giant); 318595fab37eSRobert Watson return (error); 318695fab37eSRobert Watson } 318795fab37eSRobert Watson 318895fab37eSRobert Watson /* 318995fab37eSRobert Watson * MPSAFE 319095fab37eSRobert Watson */ 319195fab37eSRobert Watson int 319295fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 319395fab37eSRobert Watson { 319495fab37eSRobert Watson struct nameidata nd; 319595fab37eSRobert Watson struct mac extmac; 319695fab37eSRobert Watson int error; 319795fab37eSRobert Watson 319895fab37eSRobert Watson mtx_lock(&Giant); 319995fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 320095fab37eSRobert Watson SCARG(uap, path_p), td); 320195fab37eSRobert Watson error = namei(&nd); 320295fab37eSRobert Watson if (error) 320395fab37eSRobert Watson goto out; 320495fab37eSRobert Watson 320595fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 320695fab37eSRobert Watson if (error == 0) 320795fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 320895fab37eSRobert Watson NDFREE(&nd, 0); 320995fab37eSRobert Watson if (error) 321095fab37eSRobert Watson goto out; 321195fab37eSRobert Watson 321295fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 321395fab37eSRobert Watson 321495fab37eSRobert Watson out: 321595fab37eSRobert Watson mtx_unlock(&Giant); 321695fab37eSRobert Watson return (error); 321795fab37eSRobert Watson } 321895fab37eSRobert Watson 321995fab37eSRobert Watson /* 322095fab37eSRobert Watson * MPSAFE 322195fab37eSRobert Watson */ 322295fab37eSRobert Watson int 322395fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 322495fab37eSRobert Watson { 322595fab37eSRobert Watson struct file *fp; 322695fab37eSRobert Watson struct mac extmac; 322795fab37eSRobert Watson struct label intlabel; 322895fab37eSRobert Watson struct mount *mp; 322995fab37eSRobert Watson struct vnode *vp; 323095fab37eSRobert Watson struct pipe *pipe; 323195fab37eSRobert Watson int error; 323295fab37eSRobert Watson 323395fab37eSRobert Watson mtx_lock(&Giant); 323495fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 323595fab37eSRobert Watson if (error) 323695fab37eSRobert Watson goto out1; 323795fab37eSRobert Watson 323895fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 323995fab37eSRobert Watson if (error) 324095fab37eSRobert Watson goto out2; 324195fab37eSRobert Watson 324295fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 324395fab37eSRobert Watson if (error) 324495fab37eSRobert Watson goto out2; 324595fab37eSRobert Watson 324695fab37eSRobert Watson switch (fp->f_type) { 324795fab37eSRobert Watson case DTYPE_FIFO: 324895fab37eSRobert Watson case DTYPE_VNODE: 324995fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 325095fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 325195fab37eSRobert Watson if (error != 0) 325295fab37eSRobert Watson break; 325395fab37eSRobert Watson 325495fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 325595fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 325695fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 325795fab37eSRobert Watson vn_finished_write(mp); 325895fab37eSRobert Watson mac_destroy_temp(&intlabel); 325995fab37eSRobert Watson break; 326095fab37eSRobert Watson case DTYPE_PIPE: 326195fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 32621aa37f53SRobert Watson PIPE_LOCK(pipe); 326395fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 32641aa37f53SRobert Watson PIPE_UNLOCK(pipe); 326595fab37eSRobert Watson break; 326695fab37eSRobert Watson default: 326795fab37eSRobert Watson error = EINVAL; 326895fab37eSRobert Watson } 326995fab37eSRobert Watson 327095fab37eSRobert Watson out2: 327195fab37eSRobert Watson fdrop(fp, td); 327295fab37eSRobert Watson out1: 327395fab37eSRobert Watson mtx_unlock(&Giant); 327495fab37eSRobert Watson return (error); 327595fab37eSRobert Watson } 327695fab37eSRobert Watson 327795fab37eSRobert Watson /* 327895fab37eSRobert Watson * MPSAFE 327995fab37eSRobert Watson */ 328095fab37eSRobert Watson int 328195fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 328295fab37eSRobert Watson { 328395fab37eSRobert Watson struct nameidata nd; 328495fab37eSRobert Watson struct mac extmac; 328595fab37eSRobert Watson struct label intlabel; 328695fab37eSRobert Watson struct mount *mp; 328795fab37eSRobert Watson int error; 328895fab37eSRobert Watson 328995fab37eSRobert Watson mtx_lock(&Giant); 329095fab37eSRobert Watson 329195fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 329295fab37eSRobert Watson if (error) 329395fab37eSRobert Watson goto out; 329495fab37eSRobert Watson 329595fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 329695fab37eSRobert Watson if (error) 329795fab37eSRobert Watson goto out; 329895fab37eSRobert Watson 329995fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 330095fab37eSRobert Watson SCARG(uap, path_p), td); 330195fab37eSRobert Watson error = namei(&nd); 330295fab37eSRobert Watson if (error) 330395fab37eSRobert Watson goto out2; 330495fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 330595fab37eSRobert Watson if (error) 330695fab37eSRobert Watson goto out2; 330795fab37eSRobert Watson 330895fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 330995fab37eSRobert Watson 331095fab37eSRobert Watson vn_finished_write(mp); 331195fab37eSRobert Watson out2: 331295fab37eSRobert Watson mac_destroy_temp(&intlabel); 331395fab37eSRobert Watson NDFREE(&nd, 0); 331495fab37eSRobert Watson out: 331595fab37eSRobert Watson mtx_unlock(&Giant); 331695fab37eSRobert Watson return (error); 331795fab37eSRobert Watson } 331895fab37eSRobert Watson 331927f2eac7SRobert Watson int 332027f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 332127f2eac7SRobert Watson { 332227f2eac7SRobert Watson struct mac_policy_conf *mpc; 332327f2eac7SRobert Watson char target[MAC_MAX_POLICY_NAME]; 332427f2eac7SRobert Watson int error; 332527f2eac7SRobert Watson 332627f2eac7SRobert Watson error = copyinstr(SCARG(uap, policy), target, sizeof(target), NULL); 332727f2eac7SRobert Watson if (error) 332827f2eac7SRobert Watson return (error); 332927f2eac7SRobert Watson 333027f2eac7SRobert Watson error = ENOSYS; 333127f2eac7SRobert Watson MAC_POLICY_LIST_BUSY(); 333227f2eac7SRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { 333327f2eac7SRobert Watson if (strcmp(mpc->mpc_name, target) == 0 && 333427f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall != NULL) { 333527f2eac7SRobert Watson error = mpc->mpc_ops->mpo_syscall(td, 333627f2eac7SRobert Watson SCARG(uap, call), SCARG(uap, arg)); 333727f2eac7SRobert Watson goto out; 333827f2eac7SRobert Watson } 333927f2eac7SRobert Watson } 334027f2eac7SRobert Watson 334127f2eac7SRobert Watson out: 334227f2eac7SRobert Watson MAC_POLICY_LIST_UNBUSY(); 334327f2eac7SRobert Watson return (error); 334427f2eac7SRobert Watson } 334527f2eac7SRobert Watson 334695fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 334795fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 334895fab37eSRobert Watson 334995fab37eSRobert Watson #else /* !MAC */ 33507bc82500SRobert Watson 33517bc82500SRobert Watson int 33527bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 33537bc82500SRobert Watson { 33547bc82500SRobert Watson 33557bc82500SRobert Watson return (ENOSYS); 33567bc82500SRobert Watson } 33577bc82500SRobert Watson 33587bc82500SRobert Watson int 33597bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 33607bc82500SRobert Watson { 33617bc82500SRobert Watson 33627bc82500SRobert Watson return (ENOSYS); 33637bc82500SRobert Watson } 33647bc82500SRobert Watson 33657bc82500SRobert Watson int 33667bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 33677bc82500SRobert Watson { 33687bc82500SRobert Watson 33697bc82500SRobert Watson return (ENOSYS); 33707bc82500SRobert Watson } 33717bc82500SRobert Watson 33727bc82500SRobert Watson int 33737bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 33747bc82500SRobert Watson { 33757bc82500SRobert Watson 33767bc82500SRobert Watson return (ENOSYS); 33777bc82500SRobert Watson } 33787bc82500SRobert Watson 33797bc82500SRobert Watson int 33807bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 33817bc82500SRobert Watson { 33827bc82500SRobert Watson 33837bc82500SRobert Watson return (ENOSYS); 33847bc82500SRobert Watson } 33857bc82500SRobert Watson 33867bc82500SRobert Watson int 33877bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 33887bc82500SRobert Watson { 33897bc82500SRobert Watson 33907bc82500SRobert Watson return (ENOSYS); 33917bc82500SRobert Watson } 339295fab37eSRobert Watson 339327f2eac7SRobert Watson int 339427f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 339527f2eac7SRobert Watson { 339627f2eac7SRobert Watson 339727f2eac7SRobert Watson return (ENOSYS); 339827f2eac7SRobert Watson } 339927f2eac7SRobert Watson 340095fab37eSRobert Watson #endif /* !MAC */ 3401