17bc82500SRobert Watson /*- 27bc82500SRobert Watson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 37bc82500SRobert Watson * Copyright (c) 2001 Ilmar S. Habibulin 47bc82500SRobert Watson * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 57bc82500SRobert Watson * All rights reserved. 67bc82500SRobert Watson * 77bc82500SRobert Watson * This software was developed by Robert Watson and Ilmar Habibulin for the 87bc82500SRobert Watson * TrustedBSD Project. 97bc82500SRobert Watson * 107bc82500SRobert Watson * This software was developed for the FreeBSD Project in part by NAI Labs, 117bc82500SRobert Watson * the Security Research Division of Network Associates, Inc. under 127bc82500SRobert Watson * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 137bc82500SRobert Watson * CHATS research program. 147bc82500SRobert Watson * 157bc82500SRobert Watson * Redistribution and use in source and binary forms, with or without 167bc82500SRobert Watson * modification, are permitted provided that the following conditions 177bc82500SRobert Watson * are met: 187bc82500SRobert Watson * 1. Redistributions of source code must retain the above copyright 197bc82500SRobert Watson * notice, this list of conditions and the following disclaimer. 207bc82500SRobert Watson * 2. Redistributions in binary form must reproduce the above copyright 217bc82500SRobert Watson * notice, this list of conditions and the following disclaimer in the 227bc82500SRobert Watson * documentation and/or other materials provided with the distribution. 237bc82500SRobert Watson * 3. The names of the authors may not be used to endorse or promote 247bc82500SRobert Watson * products derived from this software without specific prior written 257bc82500SRobert Watson * permission. 267bc82500SRobert Watson * 277bc82500SRobert Watson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 287bc82500SRobert Watson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 297bc82500SRobert Watson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 307bc82500SRobert Watson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 317bc82500SRobert Watson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 327bc82500SRobert Watson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 337bc82500SRobert Watson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 347bc82500SRobert Watson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 357bc82500SRobert Watson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 367bc82500SRobert Watson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 377bc82500SRobert Watson * SUCH DAMAGE. 387bc82500SRobert Watson * 397bc82500SRobert Watson * $FreeBSD$ 407bc82500SRobert Watson */ 417bc82500SRobert Watson /* 427bc82500SRobert Watson * Developed by the TrustedBSD Project. 437bc82500SRobert Watson * 447bc82500SRobert Watson * Framework for extensible kernel access control. Kernel and userland 457bc82500SRobert Watson * interface to the framework, policy registration and composition. 467bc82500SRobert Watson */ 477bc82500SRobert Watson 487bc82500SRobert Watson #include "opt_mac.h" 49328048bcSPoul-Henning Kamp #include "opt_devfs.h" 50f9d0d524SRobert Watson 517bc82500SRobert Watson #include <sys/param.h> 5295fab37eSRobert Watson #include <sys/extattr.h> 5395fab37eSRobert Watson #include <sys/kernel.h> 5495fab37eSRobert Watson #include <sys/lock.h> 55b656366bSBruce Evans #include <sys/malloc.h> 5695fab37eSRobert Watson #include <sys/mutex.h> 5795fab37eSRobert Watson #include <sys/mac.h> 587ba28492SRobert Watson #include <sys/module.h> 5995fab37eSRobert Watson #include <sys/proc.h> 6095fab37eSRobert Watson #include <sys/systm.h> 617bc82500SRobert Watson #include <sys/sysproto.h> 627bc82500SRobert Watson #include <sys/sysent.h> 6395fab37eSRobert Watson #include <sys/vnode.h> 6495fab37eSRobert Watson #include <sys/mount.h> 6595fab37eSRobert Watson #include <sys/file.h> 6695fab37eSRobert Watson #include <sys/namei.h> 6795fab37eSRobert Watson #include <sys/socket.h> 6895fab37eSRobert Watson #include <sys/pipe.h> 6995fab37eSRobert Watson #include <sys/socketvar.h> 7095fab37eSRobert Watson #include <sys/sysctl.h> 7195fab37eSRobert Watson 7295fab37eSRobert Watson #include <vm/vm.h> 7395fab37eSRobert Watson #include <vm/pmap.h> 7495fab37eSRobert Watson #include <vm/vm_map.h> 7595fab37eSRobert Watson #include <vm/vm_object.h> 7695fab37eSRobert Watson 7795fab37eSRobert Watson #include <sys/mac_policy.h> 7895fab37eSRobert Watson 7995fab37eSRobert Watson #include <fs/devfs/devfs.h> 8095fab37eSRobert Watson 8195fab37eSRobert Watson #include <net/bpfdesc.h> 8295fab37eSRobert Watson #include <net/if.h> 8395fab37eSRobert Watson #include <net/if_var.h> 8495fab37eSRobert Watson 8595fab37eSRobert Watson #include <netinet/in.h> 8695fab37eSRobert Watson #include <netinet/ip_var.h> 8795fab37eSRobert Watson 8895fab37eSRobert Watson #ifdef MAC 8995fab37eSRobert Watson 907ba28492SRobert Watson /* 917ba28492SRobert Watson * Declare that the kernel provides MAC support, version 1. This permits 927ba28492SRobert Watson * modules to refuse to be loaded if the necessary support isn't present, 937ba28492SRobert Watson * even if it's pre-boot. 947ba28492SRobert Watson */ 957ba28492SRobert Watson MODULE_VERSION(kernel_mac_support, 1); 967ba28492SRobert Watson 9795fab37eSRobert Watson SYSCTL_DECL(_security); 9895fab37eSRobert Watson 9995fab37eSRobert Watson SYSCTL_NODE(_security, OID_AUTO, mac, CTLFLAG_RW, 0, 10095fab37eSRobert Watson "TrustedBSD MAC policy controls"); 101b2f0927aSRobert Watson 10295fab37eSRobert Watson #ifndef MAC_MAX_POLICIES 10395fab37eSRobert Watson #define MAC_MAX_POLICIES 8 10495fab37eSRobert Watson #endif 10595fab37eSRobert Watson #if MAC_MAX_POLICIES > 32 10695fab37eSRobert Watson #error "MAC_MAX_POLICIES too large" 10795fab37eSRobert Watson #endif 10895fab37eSRobert Watson static unsigned int mac_max_policies = MAC_MAX_POLICIES; 10995fab37eSRobert Watson static unsigned int mac_policy_offsets_free = (1 << MAC_MAX_POLICIES) - 1; 11095fab37eSRobert Watson SYSCTL_UINT(_security_mac, OID_AUTO, max_policies, CTLFLAG_RD, 11195fab37eSRobert Watson &mac_max_policies, 0, ""); 11295fab37eSRobert Watson 11395fab37eSRobert Watson static int mac_late = 0; 11495fab37eSRobert Watson 11595fab37eSRobert Watson static int mac_enforce_fs = 1; 11695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_fs, CTLFLAG_RW, 11795fab37eSRobert Watson &mac_enforce_fs, 0, "Enforce MAC policy on file system objects"); 11895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_fs", &mac_enforce_fs); 11995fab37eSRobert Watson 12095fab37eSRobert Watson static int mac_enforce_network = 1; 12195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW, 12295fab37eSRobert Watson &mac_enforce_network, 0, "Enforce MAC policy on network packets"); 12395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_network", &mac_enforce_network); 12495fab37eSRobert Watson 125b88c98f6SRobert Watson static int mac_enforce_pipe = 1; 126b88c98f6SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_pipe, CTLFLAG_RW, 127b88c98f6SRobert Watson &mac_enforce_pipe, 0, "Enforce MAC policy on pipe operations"); 128c031391bSRobert Watson TUNABLE_INT("security.mac.enforce_pipe", &mac_enforce_pipe); 129b88c98f6SRobert Watson 13095fab37eSRobert Watson static int mac_enforce_process = 1; 13195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_process, CTLFLAG_RW, 13295fab37eSRobert Watson &mac_enforce_process, 0, "Enforce MAC policy on inter-process operations"); 13395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_process", &mac_enforce_process); 13495fab37eSRobert Watson 13595fab37eSRobert Watson static int mac_enforce_socket = 1; 13695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW, 13795fab37eSRobert Watson &mac_enforce_socket, 0, "Enforce MAC policy on socket operations"); 13895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket); 13995fab37eSRobert Watson 140ca7850c3SRobert Watson static int mac_enforce_vm = 1; 141ca7850c3SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_vm, CTLFLAG_RW, 142ca7850c3SRobert Watson &mac_enforce_vm, 0, "Enforce MAC policy on vm operations"); 143c031391bSRobert Watson TUNABLE_INT("security.mac.enforce_vm", &mac_enforce_vm); 144ca7850c3SRobert Watson 14595fab37eSRobert Watson static int mac_label_size = sizeof(struct mac); 14695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, label_size, CTLFLAG_RD, 14795fab37eSRobert Watson &mac_label_size, 0, "Pre-compiled MAC label size"); 14895fab37eSRobert Watson 14995fab37eSRobert Watson static int mac_cache_fslabel_in_vnode = 1; 15095fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, cache_fslabel_in_vnode, CTLFLAG_RW, 15195fab37eSRobert Watson &mac_cache_fslabel_in_vnode, 0, "Cache mount fslabel in vnode"); 15295fab37eSRobert Watson TUNABLE_INT("security.mac.cache_fslabel_in_vnode", 15395fab37eSRobert Watson &mac_cache_fslabel_in_vnode); 15495fab37eSRobert Watson 15595fab37eSRobert Watson static int mac_vnode_label_cache_hits = 0; 15695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_hits, CTLFLAG_RD, 15795fab37eSRobert Watson &mac_vnode_label_cache_hits, 0, "Cache hits on vnode labels"); 15895fab37eSRobert Watson static int mac_vnode_label_cache_misses = 0; 15995fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD, 16095fab37eSRobert Watson &mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels"); 161c0f39905SRobert Watson 162c0f39905SRobert Watson static int mac_mmap_revocation = 1; 163c0f39905SRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation, CTLFLAG_RW, 164c0f39905SRobert Watson &mac_mmap_revocation, 0, "Revoke mmap access to files on subject " 165c0f39905SRobert Watson "relabel"); 16699fa64f8SRobert Watson static int mac_mmap_revocation_via_cow = 0; 16795fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW, 16895fab37eSRobert Watson &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via " 16995fab37eSRobert Watson "copy-on-write semantics, or by removing all write access"); 17095fab37eSRobert Watson 171f050add5SRobert Watson #ifdef MAC_DEBUG 1726be0c25eSRobert Watson SYSCTL_NODE(_security_mac, OID_AUTO, debug, CTLFLAG_RW, 0, 1736be0c25eSRobert Watson "TrustedBSD MAC debug info"); 1746be0c25eSRobert Watson 1756be0c25eSRobert Watson static int mac_debug_label_fallback = 0; 1766be0c25eSRobert Watson SYSCTL_INT(_security_mac_debug, OID_AUTO, label_fallback, CTLFLAG_RW, 1776be0c25eSRobert Watson &mac_debug_label_fallback, 0, "Filesystems should fall back to fs label" 1786be0c25eSRobert Watson "when label is corrupted."); 1796be0c25eSRobert Watson TUNABLE_INT("security.mac.debug_label_fallback", 1806be0c25eSRobert Watson &mac_debug_label_fallback); 1816be0c25eSRobert Watson 182b2f0927aSRobert Watson SYSCTL_NODE(_security_mac_debug, OID_AUTO, counters, CTLFLAG_RW, 0, 183b2f0927aSRobert Watson "TrustedBSD MAC object counters"); 184b2f0927aSRobert Watson 18595fab37eSRobert Watson static unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs, 18695fab37eSRobert Watson nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents, 18795fab37eSRobert Watson nmacipqs, nmacpipes; 188b2f0927aSRobert Watson 189b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD, 19095fab37eSRobert Watson &nmacmbufs, 0, "number of mbufs in use"); 191b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, creds, CTLFLAG_RD, 19295fab37eSRobert Watson &nmaccreds, 0, "number of ucreds in use"); 193b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD, 19495fab37eSRobert Watson &nmacifnets, 0, "number of ifnets in use"); 195b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD, 19695fab37eSRobert Watson &nmacipqs, 0, "number of ipqs in use"); 197b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, bpfdescs, CTLFLAG_RD, 19895fab37eSRobert Watson &nmacbpfdescs, 0, "number of bpfdescs in use"); 199b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, sockets, CTLFLAG_RD, 20095fab37eSRobert Watson &nmacsockets, 0, "number of sockets in use"); 201b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, pipes, CTLFLAG_RD, 20295fab37eSRobert Watson &nmacpipes, 0, "number of pipes in use"); 203b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mounts, CTLFLAG_RD, 20495fab37eSRobert Watson &nmacmounts, 0, "number of mounts in use"); 205b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, temp, CTLFLAG_RD, 20695fab37eSRobert Watson &nmactemp, 0, "number of temporary labels in use"); 207b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, vnodes, CTLFLAG_RD, 20895fab37eSRobert Watson &nmacvnodes, 0, "number of vnodes in use"); 209b2f0927aSRobert Watson SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, devfsdirents, CTLFLAG_RD, 21095fab37eSRobert Watson &nmacdevfsdirents, 0, "number of devfs dirents inuse"); 211f050add5SRobert Watson #endif 21295fab37eSRobert Watson 21395fab37eSRobert Watson static int error_select(int error1, int error2); 21495fab37eSRobert Watson static int mac_externalize(struct label *label, struct mac *mac); 21595fab37eSRobert Watson static int mac_policy_register(struct mac_policy_conf *mpc); 21695fab37eSRobert Watson static int mac_policy_unregister(struct mac_policy_conf *mpc); 21795fab37eSRobert Watson 21895fab37eSRobert Watson static int mac_stdcreatevnode_ea(struct vnode *vp); 21995fab37eSRobert Watson static void mac_cred_mmapped_drop_perms(struct thread *td, 22095fab37eSRobert Watson struct ucred *cred); 22195fab37eSRobert Watson static void mac_cred_mmapped_drop_perms_recurse(struct thread *td, 22295fab37eSRobert Watson struct ucred *cred, struct vm_map *map); 22395fab37eSRobert Watson 22495fab37eSRobert Watson MALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 22595fab37eSRobert Watson MALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 22695fab37eSRobert Watson 22795fab37eSRobert Watson /* 22895fab37eSRobert Watson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 22995fab37eSRobert Watson * the linked list of attached policy modules. Read-only consumers of 23095fab37eSRobert Watson * the list must acquire a shared lock for the duration of their use; 23195fab37eSRobert Watson * writers must acquire an exclusive lock. Note that for compound 23295fab37eSRobert Watson * operations, locks should be held for the entire compound operation, 23395fab37eSRobert Watson * and that this is not yet done for relabel requests. 23495fab37eSRobert Watson */ 23595fab37eSRobert Watson static struct mtx mac_policy_list_lock; 23695fab37eSRobert Watson static LIST_HEAD(, mac_policy_conf) mac_policy_list; 23795fab37eSRobert Watson static int mac_policy_list_busy; 23895fab37eSRobert Watson #define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 23995fab37eSRobert Watson "mac_policy_list_lock", NULL, MTX_DEF); 24095fab37eSRobert Watson #define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 24195fab37eSRobert Watson #define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 24295fab37eSRobert Watson 24395fab37eSRobert Watson #define MAC_POLICY_LIST_BUSY() do { \ 24495fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 24595fab37eSRobert Watson mac_policy_list_busy++; \ 24695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 24795fab37eSRobert Watson } while (0) 24895fab37eSRobert Watson 24995fab37eSRobert Watson #define MAC_POLICY_LIST_UNBUSY() do { \ 25095fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 25195fab37eSRobert Watson mac_policy_list_busy--; \ 25295fab37eSRobert Watson if (mac_policy_list_busy < 0) \ 25395fab37eSRobert Watson panic("Extra mac_policy_list_busy--"); \ 25495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 25595fab37eSRobert Watson } while (0) 25695fab37eSRobert Watson 25795fab37eSRobert Watson /* 25895fab37eSRobert Watson * MAC_CHECK performs the designated check by walking the policy 25995fab37eSRobert Watson * module list and checking with each as to how it feels about the 26095fab37eSRobert Watson * request. Note that it returns its value via 'error' in the scope 26195fab37eSRobert Watson * of the caller. 26295fab37eSRobert Watson */ 26395fab37eSRobert Watson #define MAC_CHECK(check, args...) do { \ 26495fab37eSRobert Watson struct mac_policy_conf *mpc; \ 26595fab37eSRobert Watson \ 26695fab37eSRobert Watson error = 0; \ 26795fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 26895fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 26995fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 27095fab37eSRobert Watson error = error_select( \ 27195fab37eSRobert Watson mpc->mpc_ops->mpo_ ## check (args), \ 27295fab37eSRobert Watson error); \ 27395fab37eSRobert Watson } \ 27495fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 27595fab37eSRobert Watson } while (0) 27695fab37eSRobert Watson 27795fab37eSRobert Watson /* 27895fab37eSRobert Watson * MAC_BOOLEAN performs the designated boolean composition by walking 27995fab37eSRobert Watson * the module list, invoking each instance of the operation, and 28095fab37eSRobert Watson * combining the results using the passed C operator. Note that it 28195fab37eSRobert Watson * returns its value via 'result' in the scope of the caller, which 28295fab37eSRobert Watson * should be initialized by the caller in a meaningful way to get 28395fab37eSRobert Watson * a meaningful result. 28495fab37eSRobert Watson */ 28595fab37eSRobert Watson #define MAC_BOOLEAN(operation, composition, args...) do { \ 28695fab37eSRobert Watson struct mac_policy_conf *mpc; \ 28795fab37eSRobert Watson \ 28895fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 28995fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 29095fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 29195fab37eSRobert Watson result = result composition \ 29295fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 29395fab37eSRobert Watson } \ 29495fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 29595fab37eSRobert Watson } while (0) 29695fab37eSRobert Watson 29795fab37eSRobert Watson /* 29895fab37eSRobert Watson * MAC_PERFORM performs the designated operation by walking the policy 29995fab37eSRobert Watson * module list and invoking that operation for each policy. 30095fab37eSRobert Watson */ 30195fab37eSRobert Watson #define MAC_PERFORM(operation, args...) do { \ 30295fab37eSRobert Watson struct mac_policy_conf *mpc; \ 30395fab37eSRobert Watson \ 30495fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 30595fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 30695fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 30795fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 30895fab37eSRobert Watson } \ 30995fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 31095fab37eSRobert Watson } while (0) 31195fab37eSRobert Watson 31295fab37eSRobert Watson /* 31395fab37eSRobert Watson * Initialize the MAC subsystem, including appropriate SMP locks. 31495fab37eSRobert Watson */ 31595fab37eSRobert Watson static void 31695fab37eSRobert Watson mac_init(void) 31795fab37eSRobert Watson { 31895fab37eSRobert Watson 31995fab37eSRobert Watson LIST_INIT(&mac_policy_list); 32095fab37eSRobert Watson MAC_POLICY_LIST_LOCKINIT(); 32195fab37eSRobert Watson } 32295fab37eSRobert Watson 32395fab37eSRobert Watson /* 32495fab37eSRobert Watson * For the purposes of modules that want to know if they were loaded 32595fab37eSRobert Watson * "early", set the mac_late flag once we've processed modules either 32695fab37eSRobert Watson * linked into the kernel, or loaded before the kernel startup. 32795fab37eSRobert Watson */ 32895fab37eSRobert Watson static void 32995fab37eSRobert Watson mac_late_init(void) 33095fab37eSRobert Watson { 33195fab37eSRobert Watson 33295fab37eSRobert Watson mac_late = 1; 33395fab37eSRobert Watson } 33495fab37eSRobert Watson 33595fab37eSRobert Watson /* 33695fab37eSRobert Watson * Allow MAC policy modules to register during boot, etc. 33795fab37eSRobert Watson */ 33895fab37eSRobert Watson int 33995fab37eSRobert Watson mac_policy_modevent(module_t mod, int type, void *data) 34095fab37eSRobert Watson { 34195fab37eSRobert Watson struct mac_policy_conf *mpc; 34295fab37eSRobert Watson int error; 34395fab37eSRobert Watson 34495fab37eSRobert Watson error = 0; 34595fab37eSRobert Watson mpc = (struct mac_policy_conf *) data; 34695fab37eSRobert Watson 34795fab37eSRobert Watson switch (type) { 34895fab37eSRobert Watson case MOD_LOAD: 34995fab37eSRobert Watson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 35095fab37eSRobert Watson mac_late) { 35195fab37eSRobert Watson printf("mac_policy_modevent: can't load %s policy " 35295fab37eSRobert Watson "after booting\n", mpc->mpc_name); 35395fab37eSRobert Watson error = EBUSY; 35495fab37eSRobert Watson break; 35595fab37eSRobert Watson } 35695fab37eSRobert Watson error = mac_policy_register(mpc); 35795fab37eSRobert Watson break; 35895fab37eSRobert Watson case MOD_UNLOAD: 35995fab37eSRobert Watson /* Don't unregister the module if it was never registered. */ 36095fab37eSRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 36195fab37eSRobert Watson != 0) 36295fab37eSRobert Watson error = mac_policy_unregister(mpc); 36395fab37eSRobert Watson else 36495fab37eSRobert Watson error = 0; 36595fab37eSRobert Watson break; 36695fab37eSRobert Watson default: 36795fab37eSRobert Watson break; 36895fab37eSRobert Watson } 36995fab37eSRobert Watson 37095fab37eSRobert Watson return (error); 37195fab37eSRobert Watson } 37295fab37eSRobert Watson 37395fab37eSRobert Watson static int 37495fab37eSRobert Watson mac_policy_register(struct mac_policy_conf *mpc) 37595fab37eSRobert Watson { 37695fab37eSRobert Watson struct mac_policy_conf *tmpc; 37795fab37eSRobert Watson struct mac_policy_op_entry *mpe; 37895fab37eSRobert Watson int slot; 37995fab37eSRobert Watson 380cc51a2b5SRobert Watson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*mpc->mpc_ops), 381cc51a2b5SRobert Watson M_MACOPVEC, M_WAITOK | M_ZERO); 38295fab37eSRobert Watson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 38395fab37eSRobert Watson switch (mpe->mpe_constant) { 38495fab37eSRobert Watson case MAC_OP_LAST: 38595fab37eSRobert Watson /* 38695fab37eSRobert Watson * Doesn't actually happen, but this allows checking 38795fab37eSRobert Watson * that all enumerated values are handled. 38895fab37eSRobert Watson */ 38995fab37eSRobert Watson break; 39095fab37eSRobert Watson case MAC_DESTROY: 39195fab37eSRobert Watson mpc->mpc_ops->mpo_destroy = 39295fab37eSRobert Watson mpe->mpe_function; 39395fab37eSRobert Watson break; 39495fab37eSRobert Watson case MAC_INIT: 39595fab37eSRobert Watson mpc->mpc_ops->mpo_init = 39695fab37eSRobert Watson mpe->mpe_function; 39795fab37eSRobert Watson break; 39827f2eac7SRobert Watson case MAC_SYSCALL: 39927f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall = 40027f2eac7SRobert Watson mpe->mpe_function; 40127f2eac7SRobert Watson break; 40296adb909SRobert Watson case MAC_INIT_BPFDESC_LABEL: 40396adb909SRobert Watson mpc->mpc_ops->mpo_init_bpfdesc_label = 40495fab37eSRobert Watson mpe->mpe_function; 40595fab37eSRobert Watson break; 40696adb909SRobert Watson case MAC_INIT_CRED_LABEL: 40796adb909SRobert Watson mpc->mpc_ops->mpo_init_cred_label = 40895fab37eSRobert Watson mpe->mpe_function; 40995fab37eSRobert Watson break; 41096adb909SRobert Watson case MAC_INIT_DEVFSDIRENT_LABEL: 41196adb909SRobert Watson mpc->mpc_ops->mpo_init_devfsdirent_label = 41295fab37eSRobert Watson mpe->mpe_function; 41395fab37eSRobert Watson break; 41496adb909SRobert Watson case MAC_INIT_IFNET_LABEL: 41596adb909SRobert Watson mpc->mpc_ops->mpo_init_ifnet_label = 41695fab37eSRobert Watson mpe->mpe_function; 41795fab37eSRobert Watson break; 41896adb909SRobert Watson case MAC_INIT_IPQ_LABEL: 41996adb909SRobert Watson mpc->mpc_ops->mpo_init_ipq_label = 42095fab37eSRobert Watson mpe->mpe_function; 42195fab37eSRobert Watson break; 42296adb909SRobert Watson case MAC_INIT_MBUF_LABEL: 42396adb909SRobert Watson mpc->mpc_ops->mpo_init_mbuf_label = 42495fab37eSRobert Watson mpe->mpe_function; 42595fab37eSRobert Watson break; 42696adb909SRobert Watson case MAC_INIT_MOUNT_LABEL: 42796adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_label = 42895fab37eSRobert Watson mpe->mpe_function; 42995fab37eSRobert Watson break; 43096adb909SRobert Watson case MAC_INIT_MOUNT_FS_LABEL: 43196adb909SRobert Watson mpc->mpc_ops->mpo_init_mount_fs_label = 43295fab37eSRobert Watson mpe->mpe_function; 43395fab37eSRobert Watson break; 43496adb909SRobert Watson case MAC_INIT_PIPE_LABEL: 43596adb909SRobert Watson mpc->mpc_ops->mpo_init_pipe_label = 43695fab37eSRobert Watson mpe->mpe_function; 43795fab37eSRobert Watson break; 43896adb909SRobert Watson case MAC_INIT_SOCKET_LABEL: 43996adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_label = 44095fab37eSRobert Watson mpe->mpe_function; 44195fab37eSRobert Watson break; 44296adb909SRobert Watson case MAC_INIT_SOCKET_PEER_LABEL: 44396adb909SRobert Watson mpc->mpc_ops->mpo_init_socket_peer_label = 44495fab37eSRobert Watson mpe->mpe_function; 44595fab37eSRobert Watson break; 44696adb909SRobert Watson case MAC_INIT_TEMP_LABEL: 44796adb909SRobert Watson mpc->mpc_ops->mpo_init_temp_label = 44895fab37eSRobert Watson mpe->mpe_function; 44995fab37eSRobert Watson break; 45096adb909SRobert Watson case MAC_INIT_VNODE_LABEL: 45196adb909SRobert Watson mpc->mpc_ops->mpo_init_vnode_label = 45295fab37eSRobert Watson mpe->mpe_function; 45395fab37eSRobert Watson break; 45496adb909SRobert Watson case MAC_DESTROY_BPFDESC_LABEL: 45596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_bpfdesc_label = 45695fab37eSRobert Watson mpe->mpe_function; 45795fab37eSRobert Watson break; 45896adb909SRobert Watson case MAC_DESTROY_CRED_LABEL: 45996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_cred_label = 46095fab37eSRobert Watson mpe->mpe_function; 46195fab37eSRobert Watson break; 46296adb909SRobert Watson case MAC_DESTROY_DEVFSDIRENT_LABEL: 46396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_devfsdirent_label = 46495fab37eSRobert Watson mpe->mpe_function; 46595fab37eSRobert Watson break; 46696adb909SRobert Watson case MAC_DESTROY_IFNET_LABEL: 46796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ifnet_label = 46895fab37eSRobert Watson mpe->mpe_function; 46995fab37eSRobert Watson break; 47096adb909SRobert Watson case MAC_DESTROY_IPQ_LABEL: 47196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_ipq_label = 47295fab37eSRobert Watson mpe->mpe_function; 47395fab37eSRobert Watson break; 47496adb909SRobert Watson case MAC_DESTROY_MBUF_LABEL: 47596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mbuf_label = 47695fab37eSRobert Watson mpe->mpe_function; 47795fab37eSRobert Watson break; 47896adb909SRobert Watson case MAC_DESTROY_MOUNT_LABEL: 47996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_label = 48095fab37eSRobert Watson mpe->mpe_function; 48195fab37eSRobert Watson break; 48296adb909SRobert Watson case MAC_DESTROY_MOUNT_FS_LABEL: 48396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_mount_fs_label = 48495fab37eSRobert Watson mpe->mpe_function; 48595fab37eSRobert Watson break; 48696adb909SRobert Watson case MAC_DESTROY_PIPE_LABEL: 48796adb909SRobert Watson mpc->mpc_ops->mpo_destroy_pipe_label = 48896adb909SRobert Watson mpe->mpe_function; 48996adb909SRobert Watson break; 49096adb909SRobert Watson case MAC_DESTROY_SOCKET_LABEL: 49196adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_label = 49296adb909SRobert Watson mpe->mpe_function; 49396adb909SRobert Watson break; 49496adb909SRobert Watson case MAC_DESTROY_SOCKET_PEER_LABEL: 49596adb909SRobert Watson mpc->mpc_ops->mpo_destroy_socket_peer_label = 49696adb909SRobert Watson mpe->mpe_function; 49796adb909SRobert Watson break; 49896adb909SRobert Watson case MAC_DESTROY_TEMP_LABEL: 49996adb909SRobert Watson mpc->mpc_ops->mpo_destroy_temp_label = 50096adb909SRobert Watson mpe->mpe_function; 50196adb909SRobert Watson break; 50296adb909SRobert Watson case MAC_DESTROY_VNODE_LABEL: 50396adb909SRobert Watson mpc->mpc_ops->mpo_destroy_vnode_label = 50495fab37eSRobert Watson mpe->mpe_function; 50595fab37eSRobert Watson break; 50695fab37eSRobert Watson case MAC_EXTERNALIZE: 50795fab37eSRobert Watson mpc->mpc_ops->mpo_externalize = 50895fab37eSRobert Watson mpe->mpe_function; 50995fab37eSRobert Watson break; 51095fab37eSRobert Watson case MAC_INTERNALIZE: 51195fab37eSRobert Watson mpc->mpc_ops->mpo_internalize = 51295fab37eSRobert Watson mpe->mpe_function; 51395fab37eSRobert Watson break; 51495fab37eSRobert Watson case MAC_CREATE_DEVFS_DEVICE: 51595fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_device = 51695fab37eSRobert Watson mpe->mpe_function; 51795fab37eSRobert Watson break; 51895fab37eSRobert Watson case MAC_CREATE_DEVFS_DIRECTORY: 51995fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_directory = 52095fab37eSRobert Watson mpe->mpe_function; 52195fab37eSRobert Watson break; 52295fab37eSRobert Watson case MAC_CREATE_DEVFS_VNODE: 52395fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_vnode = 52495fab37eSRobert Watson mpe->mpe_function; 52595fab37eSRobert Watson break; 52695fab37eSRobert Watson case MAC_STDCREATEVNODE_EA: 52795fab37eSRobert Watson mpc->mpc_ops->mpo_stdcreatevnode_ea = 52895fab37eSRobert Watson mpe->mpe_function; 52995fab37eSRobert Watson break; 53095fab37eSRobert Watson case MAC_CREATE_VNODE: 53195fab37eSRobert Watson mpc->mpc_ops->mpo_create_vnode = 53295fab37eSRobert Watson mpe->mpe_function; 53395fab37eSRobert Watson break; 53495fab37eSRobert Watson case MAC_CREATE_MOUNT: 53595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mount = 53695fab37eSRobert Watson mpe->mpe_function; 53795fab37eSRobert Watson break; 53895fab37eSRobert Watson case MAC_CREATE_ROOT_MOUNT: 53995fab37eSRobert Watson mpc->mpc_ops->mpo_create_root_mount = 54095fab37eSRobert Watson mpe->mpe_function; 54195fab37eSRobert Watson break; 54295fab37eSRobert Watson case MAC_RELABEL_VNODE: 54395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_vnode = 54495fab37eSRobert Watson mpe->mpe_function; 54595fab37eSRobert Watson break; 54695fab37eSRobert Watson case MAC_UPDATE_DEVFSDIRENT: 54795fab37eSRobert Watson mpc->mpc_ops->mpo_update_devfsdirent = 54895fab37eSRobert Watson mpe->mpe_function; 54995fab37eSRobert Watson break; 55095fab37eSRobert Watson case MAC_UPDATE_PROCFSVNODE: 55195fab37eSRobert Watson mpc->mpc_ops->mpo_update_procfsvnode = 55295fab37eSRobert Watson mpe->mpe_function; 55395fab37eSRobert Watson break; 55495fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTATTR: 55595fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_extattr = 55695fab37eSRobert Watson mpe->mpe_function; 55795fab37eSRobert Watson break; 55895fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 55995fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_externalized = 56095fab37eSRobert Watson mpe->mpe_function; 56195fab37eSRobert Watson break; 56295fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_MOUNT: 56395fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_mount = 56495fab37eSRobert Watson mpe->mpe_function; 56595fab37eSRobert Watson break; 56695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_SOCKET: 56795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_socket = 56895fab37eSRobert Watson mpe->mpe_function; 56995fab37eSRobert Watson break; 57095fab37eSRobert Watson case MAC_CREATE_PIPE: 57195fab37eSRobert Watson mpc->mpc_ops->mpo_create_pipe = 57295fab37eSRobert Watson mpe->mpe_function; 57395fab37eSRobert Watson break; 57495fab37eSRobert Watson case MAC_CREATE_SOCKET: 57595fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket = 57695fab37eSRobert Watson mpe->mpe_function; 57795fab37eSRobert Watson break; 57895fab37eSRobert Watson case MAC_CREATE_SOCKET_FROM_SOCKET: 57995fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket_from_socket = 58095fab37eSRobert Watson mpe->mpe_function; 58195fab37eSRobert Watson break; 58295fab37eSRobert Watson case MAC_RELABEL_PIPE: 58395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_pipe = 58495fab37eSRobert Watson mpe->mpe_function; 58595fab37eSRobert Watson break; 58695fab37eSRobert Watson case MAC_RELABEL_SOCKET: 58795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_socket = 58895fab37eSRobert Watson mpe->mpe_function; 58995fab37eSRobert Watson break; 59095fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_MBUF: 59195fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 59295fab37eSRobert Watson mpe->mpe_function; 59395fab37eSRobert Watson break; 59495fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 59595fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 59695fab37eSRobert Watson mpe->mpe_function; 59795fab37eSRobert Watson break; 59895fab37eSRobert Watson case MAC_CREATE_BPFDESC: 59995fab37eSRobert Watson mpc->mpc_ops->mpo_create_bpfdesc = 60095fab37eSRobert Watson mpe->mpe_function; 60195fab37eSRobert Watson break; 60295fab37eSRobert Watson case MAC_CREATE_DATAGRAM_FROM_IPQ: 60395fab37eSRobert Watson mpc->mpc_ops->mpo_create_datagram_from_ipq = 60495fab37eSRobert Watson mpe->mpe_function; 60595fab37eSRobert Watson break; 60695fab37eSRobert Watson case MAC_CREATE_FRAGMENT: 60795fab37eSRobert Watson mpc->mpc_ops->mpo_create_fragment = 60895fab37eSRobert Watson mpe->mpe_function; 60995fab37eSRobert Watson break; 61095fab37eSRobert Watson case MAC_CREATE_IFNET: 61195fab37eSRobert Watson mpc->mpc_ops->mpo_create_ifnet = 61295fab37eSRobert Watson mpe->mpe_function; 61395fab37eSRobert Watson break; 61495fab37eSRobert Watson case MAC_CREATE_IPQ: 61595fab37eSRobert Watson mpc->mpc_ops->mpo_create_ipq = 61695fab37eSRobert Watson mpe->mpe_function; 61795fab37eSRobert Watson break; 61895fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_MBUF: 61995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 62095fab37eSRobert Watson mpe->mpe_function; 62195fab37eSRobert Watson break; 62295fab37eSRobert Watson case MAC_CREATE_MBUF_LINKLAYER: 62395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_linklayer = 62495fab37eSRobert Watson mpe->mpe_function; 62595fab37eSRobert Watson break; 62695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_BPFDESC: 62795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 62895fab37eSRobert Watson mpe->mpe_function; 62995fab37eSRobert Watson break; 63095fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_IFNET: 63195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 63295fab37eSRobert Watson mpe->mpe_function; 63395fab37eSRobert Watson break; 63495fab37eSRobert Watson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 63595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 63695fab37eSRobert Watson mpe->mpe_function; 63795fab37eSRobert Watson break; 63895fab37eSRobert Watson case MAC_CREATE_MBUF_NETLAYER: 63995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_netlayer = 64095fab37eSRobert Watson mpe->mpe_function; 64195fab37eSRobert Watson break; 64295fab37eSRobert Watson case MAC_FRAGMENT_MATCH: 64395fab37eSRobert Watson mpc->mpc_ops->mpo_fragment_match = 64495fab37eSRobert Watson mpe->mpe_function; 64595fab37eSRobert Watson break; 64695fab37eSRobert Watson case MAC_RELABEL_IFNET: 64795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_ifnet = 64895fab37eSRobert Watson mpe->mpe_function; 64995fab37eSRobert Watson break; 65095fab37eSRobert Watson case MAC_UPDATE_IPQ: 65195fab37eSRobert Watson mpc->mpc_ops->mpo_update_ipq = 65295fab37eSRobert Watson mpe->mpe_function; 65395fab37eSRobert Watson break; 65495fab37eSRobert Watson case MAC_CREATE_CRED: 65595fab37eSRobert Watson mpc->mpc_ops->mpo_create_cred = 65695fab37eSRobert Watson mpe->mpe_function; 65795fab37eSRobert Watson break; 65895fab37eSRobert Watson case MAC_EXECVE_TRANSITION: 65995fab37eSRobert Watson mpc->mpc_ops->mpo_execve_transition = 66095fab37eSRobert Watson mpe->mpe_function; 66195fab37eSRobert Watson break; 66295fab37eSRobert Watson case MAC_EXECVE_WILL_TRANSITION: 66395fab37eSRobert Watson mpc->mpc_ops->mpo_execve_will_transition = 66495fab37eSRobert Watson mpe->mpe_function; 66595fab37eSRobert Watson break; 66695fab37eSRobert Watson case MAC_CREATE_PROC0: 667226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc0 = 668226b96fbSRobert Watson mpe->mpe_function; 66995fab37eSRobert Watson break; 67095fab37eSRobert Watson case MAC_CREATE_PROC1: 671226b96fbSRobert Watson mpc->mpc_ops->mpo_create_proc1 = 672226b96fbSRobert Watson mpe->mpe_function; 67395fab37eSRobert Watson break; 67495fab37eSRobert Watson case MAC_RELABEL_CRED: 67595fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_cred = 67695fab37eSRobert Watson mpe->mpe_function; 67795fab37eSRobert Watson break; 67892dbb82aSRobert Watson case MAC_THREAD_USERRET: 67992dbb82aSRobert Watson mpc->mpc_ops->mpo_thread_userret = 68092dbb82aSRobert Watson mpe->mpe_function; 68192dbb82aSRobert Watson break; 68295fab37eSRobert Watson case MAC_CHECK_BPFDESC_RECEIVE: 68395fab37eSRobert Watson mpc->mpc_ops->mpo_check_bpfdesc_receive = 68495fab37eSRobert Watson mpe->mpe_function; 68595fab37eSRobert Watson break; 68695fab37eSRobert Watson case MAC_CHECK_CRED_RELABEL: 68795fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_relabel = 68895fab37eSRobert Watson mpe->mpe_function; 68995fab37eSRobert Watson break; 69095fab37eSRobert Watson case MAC_CHECK_CRED_VISIBLE: 69195fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_visible = 69295fab37eSRobert Watson mpe->mpe_function; 69395fab37eSRobert Watson break; 69495fab37eSRobert Watson case MAC_CHECK_IFNET_RELABEL: 69595fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_relabel = 69695fab37eSRobert Watson mpe->mpe_function; 69795fab37eSRobert Watson break; 69895fab37eSRobert Watson case MAC_CHECK_IFNET_TRANSMIT: 69995fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_transmit = 70095fab37eSRobert Watson mpe->mpe_function; 70195fab37eSRobert Watson break; 70295fab37eSRobert Watson case MAC_CHECK_MOUNT_STAT: 70395fab37eSRobert Watson mpc->mpc_ops->mpo_check_mount_stat = 70495fab37eSRobert Watson mpe->mpe_function; 70595fab37eSRobert Watson break; 70695fab37eSRobert Watson case MAC_CHECK_PIPE_IOCTL: 70795fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_ioctl = 70895fab37eSRobert Watson mpe->mpe_function; 70995fab37eSRobert Watson break; 710c024c3eeSRobert Watson case MAC_CHECK_PIPE_POLL: 711c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_poll = 712c024c3eeSRobert Watson mpe->mpe_function; 713c024c3eeSRobert Watson break; 714c024c3eeSRobert Watson case MAC_CHECK_PIPE_READ: 715c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_read = 71695fab37eSRobert Watson mpe->mpe_function; 71795fab37eSRobert Watson break; 71895fab37eSRobert Watson case MAC_CHECK_PIPE_RELABEL: 71995fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_relabel = 72095fab37eSRobert Watson mpe->mpe_function; 72195fab37eSRobert Watson break; 722c024c3eeSRobert Watson case MAC_CHECK_PIPE_STAT: 723c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_stat = 724c024c3eeSRobert Watson mpe->mpe_function; 725c024c3eeSRobert Watson break; 726c024c3eeSRobert Watson case MAC_CHECK_PIPE_WRITE: 727c024c3eeSRobert Watson mpc->mpc_ops->mpo_check_pipe_write = 728c024c3eeSRobert Watson mpe->mpe_function; 729c024c3eeSRobert Watson break; 73095fab37eSRobert Watson case MAC_CHECK_PROC_DEBUG: 73195fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_debug = 73295fab37eSRobert Watson mpe->mpe_function; 73395fab37eSRobert Watson break; 73495fab37eSRobert Watson case MAC_CHECK_PROC_SCHED: 73595fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_sched = 73695fab37eSRobert Watson mpe->mpe_function; 73795fab37eSRobert Watson break; 73895fab37eSRobert Watson case MAC_CHECK_PROC_SIGNAL: 73995fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_signal = 74095fab37eSRobert Watson mpe->mpe_function; 74195fab37eSRobert Watson break; 74295fab37eSRobert Watson case MAC_CHECK_SOCKET_BIND: 74395fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_bind = 74495fab37eSRobert Watson mpe->mpe_function; 74595fab37eSRobert Watson break; 74695fab37eSRobert Watson case MAC_CHECK_SOCKET_CONNECT: 74795fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_connect = 74895fab37eSRobert Watson mpe->mpe_function; 74995fab37eSRobert Watson break; 750d61198e4SRobert Watson case MAC_CHECK_SOCKET_DELIVER: 751d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_deliver = 75295fab37eSRobert Watson mpe->mpe_function; 75395fab37eSRobert Watson break; 754d61198e4SRobert Watson case MAC_CHECK_SOCKET_LISTEN: 755d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_listen = 75695fab37eSRobert Watson mpe->mpe_function; 75795fab37eSRobert Watson break; 75895fab37eSRobert Watson case MAC_CHECK_SOCKET_RELABEL: 75995fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_relabel = 76095fab37eSRobert Watson mpe->mpe_function; 76195fab37eSRobert Watson break; 76295fab37eSRobert Watson case MAC_CHECK_SOCKET_VISIBLE: 76395fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_visible = 76495fab37eSRobert Watson mpe->mpe_function; 76595fab37eSRobert Watson break; 76695fab37eSRobert Watson case MAC_CHECK_VNODE_ACCESS: 76795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_access = 76895fab37eSRobert Watson mpe->mpe_function; 76995fab37eSRobert Watson break; 77095fab37eSRobert Watson case MAC_CHECK_VNODE_CHDIR: 77195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chdir = 77295fab37eSRobert Watson mpe->mpe_function; 77395fab37eSRobert Watson break; 77495fab37eSRobert Watson case MAC_CHECK_VNODE_CHROOT: 77595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chroot = 77695fab37eSRobert Watson mpe->mpe_function; 77795fab37eSRobert Watson break; 77895fab37eSRobert Watson case MAC_CHECK_VNODE_CREATE: 77995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_create = 78095fab37eSRobert Watson mpe->mpe_function; 78195fab37eSRobert Watson break; 78295fab37eSRobert Watson case MAC_CHECK_VNODE_DELETE: 78395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_delete = 78495fab37eSRobert Watson mpe->mpe_function; 78595fab37eSRobert Watson break; 78695fab37eSRobert Watson case MAC_CHECK_VNODE_DELETEACL: 78795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_deleteacl = 78895fab37eSRobert Watson mpe->mpe_function; 78995fab37eSRobert Watson break; 79095fab37eSRobert Watson case MAC_CHECK_VNODE_EXEC: 79195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_exec = 79295fab37eSRobert Watson mpe->mpe_function; 79395fab37eSRobert Watson break; 79495fab37eSRobert Watson case MAC_CHECK_VNODE_GETACL: 79595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getacl = 79695fab37eSRobert Watson mpe->mpe_function; 79795fab37eSRobert Watson break; 79895fab37eSRobert Watson case MAC_CHECK_VNODE_GETEXTATTR: 79995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getextattr = 80095fab37eSRobert Watson mpe->mpe_function; 80195fab37eSRobert Watson break; 80295fab37eSRobert Watson case MAC_CHECK_VNODE_LOOKUP: 80395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_lookup = 80495fab37eSRobert Watson mpe->mpe_function; 80595fab37eSRobert Watson break; 80695fab37eSRobert Watson case MAC_CHECK_VNODE_MMAP_PERMS: 80795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 80895fab37eSRobert Watson mpe->mpe_function; 80995fab37eSRobert Watson break; 81095fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 81195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 81295fab37eSRobert Watson mpe->mpe_function; 81395fab37eSRobert Watson break; 8147f724f8bSRobert Watson case MAC_CHECK_VNODE_POLL: 8157f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_poll = 8167f724f8bSRobert Watson mpe->mpe_function; 8177f724f8bSRobert Watson break; 8187f724f8bSRobert Watson case MAC_CHECK_VNODE_READ: 8197f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_read = 8207f724f8bSRobert Watson mpe->mpe_function; 8217f724f8bSRobert Watson break; 82295fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 82395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 82495fab37eSRobert Watson mpe->mpe_function; 82595fab37eSRobert Watson break; 82695fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 82795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 82895fab37eSRobert Watson mpe->mpe_function; 82995fab37eSRobert Watson break; 83095fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 83195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 83295fab37eSRobert Watson mpe->mpe_function; 83395fab37eSRobert Watson break; 83495fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 83595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 83695fab37eSRobert Watson mpe->mpe_function; 83795fab37eSRobert Watson break; 83895fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 83995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 84095fab37eSRobert Watson mpe->mpe_function; 84195fab37eSRobert Watson break; 84295fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 84395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 84495fab37eSRobert Watson mpe->mpe_function; 84595fab37eSRobert Watson break; 84695fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 84795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 84895fab37eSRobert Watson mpe->mpe_function; 84995fab37eSRobert Watson break; 85095fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 85195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 85295fab37eSRobert Watson mpe->mpe_function; 85395fab37eSRobert Watson break; 85495fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 85595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 85695fab37eSRobert Watson mpe->mpe_function; 85795fab37eSRobert Watson break; 85895fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 85995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 86095fab37eSRobert Watson mpe->mpe_function; 86195fab37eSRobert Watson break; 86295fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 86395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 86495fab37eSRobert Watson mpe->mpe_function; 86595fab37eSRobert Watson break; 86695fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 86795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 86895fab37eSRobert Watson mpe->mpe_function; 86995fab37eSRobert Watson break; 87095fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 87195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 87295fab37eSRobert Watson mpe->mpe_function; 87395fab37eSRobert Watson break; 8747f724f8bSRobert Watson case MAC_CHECK_VNODE_WRITE: 8757f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_write = 8767f724f8bSRobert Watson mpe->mpe_function; 8777f724f8bSRobert Watson break; 87895fab37eSRobert Watson /* 87995fab37eSRobert Watson default: 88095fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 88195fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 88295fab37eSRobert Watson return (EINVAL); 88395fab37eSRobert Watson */ 88495fab37eSRobert Watson } 88595fab37eSRobert Watson } 88695fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 88795fab37eSRobert Watson if (mac_policy_list_busy > 0) { 88895fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 88995fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89095fab37eSRobert Watson mpc->mpc_ops = NULL; 89195fab37eSRobert Watson return (EBUSY); 89295fab37eSRobert Watson } 89395fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 89495fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 89595fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89695fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89795fab37eSRobert Watson mpc->mpc_ops = NULL; 89895fab37eSRobert Watson return (EEXIST); 89995fab37eSRobert Watson } 90095fab37eSRobert Watson } 90195fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 90295fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 90395fab37eSRobert Watson if (slot == 0) { 90495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 90595fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 90695fab37eSRobert Watson mpc->mpc_ops = NULL; 90795fab37eSRobert Watson return (ENOMEM); 90895fab37eSRobert Watson } 90995fab37eSRobert Watson slot--; 91095fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 91195fab37eSRobert Watson *mpc->mpc_field_off = slot; 91295fab37eSRobert Watson } 91395fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 91495fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 91595fab37eSRobert Watson 91695fab37eSRobert Watson /* Per-policy initialization. */ 91795fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 91895fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 91995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 92095fab37eSRobert Watson 92195fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 92295fab37eSRobert Watson mpc->mpc_name); 92395fab37eSRobert Watson 92495fab37eSRobert Watson return (0); 92595fab37eSRobert Watson } 92695fab37eSRobert Watson 92795fab37eSRobert Watson static int 92895fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 92995fab37eSRobert Watson { 93095fab37eSRobert Watson 931ea599aa0SRobert Watson /* 932ea599aa0SRobert Watson * If we fail the load, we may get a request to unload. Check 933ea599aa0SRobert Watson * to see if we did the run-time registration, and if not, 934ea599aa0SRobert Watson * silently succeed. 935ea599aa0SRobert Watson */ 936ea599aa0SRobert Watson MAC_POLICY_LIST_LOCK(); 937ea599aa0SRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) == 0) { 938ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 939ea599aa0SRobert Watson return (0); 940ea599aa0SRobert Watson } 94195fab37eSRobert Watson #if 0 94295fab37eSRobert Watson /* 94395fab37eSRobert Watson * Don't allow unloading modules with private data. 94495fab37eSRobert Watson */ 945ea599aa0SRobert Watson if (mpc->mpc_field_off != NULL) { 946ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 94795fab37eSRobert Watson return (EBUSY); 948ea599aa0SRobert Watson } 94995fab37eSRobert Watson #endif 950ea599aa0SRobert Watson /* 951ea599aa0SRobert Watson * Only allow the unload to proceed if the module is unloadable 952ea599aa0SRobert Watson * by its own definition. 953ea599aa0SRobert Watson */ 954ea599aa0SRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) { 955ea599aa0SRobert Watson MAC_POLICY_LIST_UNLOCK(); 95695fab37eSRobert Watson return (EBUSY); 957ea599aa0SRobert Watson } 958ea599aa0SRobert Watson /* 959ea599aa0SRobert Watson * Right now, we EBUSY if the list is in use. In the future, 960ea599aa0SRobert Watson * for reliability reasons, we might want to sleep and wakeup 961ea599aa0SRobert Watson * later to try again. 962ea599aa0SRobert Watson */ 96395fab37eSRobert Watson if (mac_policy_list_busy > 0) { 96495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 96595fab37eSRobert Watson return (EBUSY); 96695fab37eSRobert Watson } 96795fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 96895fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 96995fab37eSRobert Watson 97095fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 97195fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 97295fab37eSRobert Watson 97395fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 97495fab37eSRobert Watson mpc->mpc_ops = NULL; 97595fab37eSRobert Watson 97695fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 97795fab37eSRobert Watson mpc->mpc_name); 97895fab37eSRobert Watson 97995fab37eSRobert Watson return (0); 98095fab37eSRobert Watson } 98195fab37eSRobert Watson 98295fab37eSRobert Watson /* 98395fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 98495fab37eSRobert Watson * value with the higher precedence. 98595fab37eSRobert Watson */ 98695fab37eSRobert Watson static int 98795fab37eSRobert Watson error_select(int error1, int error2) 98895fab37eSRobert Watson { 98995fab37eSRobert Watson 99095fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 99195fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 99295fab37eSRobert Watson return (EDEADLK); 99395fab37eSRobert Watson 99495fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 99595fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 99695fab37eSRobert Watson return (EINVAL); 99795fab37eSRobert Watson 99895fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 99995fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 100095fab37eSRobert Watson return (ESRCH); 100195fab37eSRobert Watson 100295fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 100395fab37eSRobert Watson return (ENOENT); 100495fab37eSRobert Watson 100595fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 100695fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 100795fab37eSRobert Watson return (EACCES); 100895fab37eSRobert Watson 100995fab37eSRobert Watson /* Precedence goes to privilege. */ 101095fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 101195fab37eSRobert Watson return (EPERM); 101295fab37eSRobert Watson 101395fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 101495fab37eSRobert Watson if (error1 != 0) 101595fab37eSRobert Watson return (error1); 101695fab37eSRobert Watson return (error2); 101795fab37eSRobert Watson } 101895fab37eSRobert Watson 101908bcdc58SRobert Watson static void 102008bcdc58SRobert Watson mac_init_label(struct label *label) 102108bcdc58SRobert Watson { 102208bcdc58SRobert Watson 102308bcdc58SRobert Watson bzero(label, sizeof(*label)); 102408bcdc58SRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 102508bcdc58SRobert Watson } 102608bcdc58SRobert Watson 102708bcdc58SRobert Watson static void 102808bcdc58SRobert Watson mac_destroy_label(struct label *label) 102908bcdc58SRobert Watson { 103008bcdc58SRobert Watson 103108bcdc58SRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 103208bcdc58SRobert Watson ("destroying uninitialized label")); 103308bcdc58SRobert Watson 103408bcdc58SRobert Watson bzero(label, sizeof(*label)); 103508bcdc58SRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 103608bcdc58SRobert Watson } 103708bcdc58SRobert Watson 103808bcdc58SRobert Watson static void 103908bcdc58SRobert Watson mac_init_structmac(struct mac *mac) 104008bcdc58SRobert Watson { 104108bcdc58SRobert Watson 104208bcdc58SRobert Watson bzero(mac, sizeof(*mac)); 104308bcdc58SRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 104408bcdc58SRobert Watson } 104508bcdc58SRobert Watson 104608bcdc58SRobert Watson int 104708bcdc58SRobert Watson mac_init_mbuf(struct mbuf *m, int how) 104808bcdc58SRobert Watson { 104908bcdc58SRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 105008bcdc58SRobert Watson 105108bcdc58SRobert Watson /* "how" is one of M_(TRY|DONT)WAIT */ 105208bcdc58SRobert Watson mac_init_label(&m->m_pkthdr.label); 105308bcdc58SRobert Watson MAC_PERFORM(init_mbuf_label, &m->m_pkthdr.label, how); 105408bcdc58SRobert Watson #ifdef MAC_DEBUG 105508bcdc58SRobert Watson atomic_add_int(&nmacmbufs, 1); 105608bcdc58SRobert Watson #endif 105708bcdc58SRobert Watson return (0); 105808bcdc58SRobert Watson } 105908bcdc58SRobert Watson 106008bcdc58SRobert Watson void 106108bcdc58SRobert Watson mac_destroy_mbuf(struct mbuf *m) 106208bcdc58SRobert Watson { 106308bcdc58SRobert Watson 106408bcdc58SRobert Watson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 106508bcdc58SRobert Watson mac_destroy_label(&m->m_pkthdr.label); 106608bcdc58SRobert Watson #ifdef MAC_DEBUG 106708bcdc58SRobert Watson atomic_subtract_int(&nmacmbufs, 1); 106808bcdc58SRobert Watson #endif 106908bcdc58SRobert Watson } 107008bcdc58SRobert Watson 107108bcdc58SRobert Watson void 107208bcdc58SRobert Watson mac_init_cred(struct ucred *cr) 107308bcdc58SRobert Watson { 107408bcdc58SRobert Watson 107508bcdc58SRobert Watson mac_init_label(&cr->cr_label); 107608bcdc58SRobert Watson MAC_PERFORM(init_cred_label, &cr->cr_label); 107708bcdc58SRobert Watson #ifdef MAC_DEBUG 107808bcdc58SRobert Watson atomic_add_int(&nmaccreds, 1); 107908bcdc58SRobert Watson #endif 108008bcdc58SRobert Watson } 108108bcdc58SRobert Watson 108208bcdc58SRobert Watson void 108308bcdc58SRobert Watson mac_destroy_cred(struct ucred *cr) 108408bcdc58SRobert Watson { 108508bcdc58SRobert Watson 108608bcdc58SRobert Watson MAC_PERFORM(destroy_cred_label, &cr->cr_label); 108708bcdc58SRobert Watson mac_destroy_label(&cr->cr_label); 108808bcdc58SRobert Watson #ifdef MAC_DEBUG 108908bcdc58SRobert Watson atomic_subtract_int(&nmaccreds, 1); 109008bcdc58SRobert Watson #endif 109108bcdc58SRobert Watson } 109208bcdc58SRobert Watson 109308bcdc58SRobert Watson void 109408bcdc58SRobert Watson mac_init_ifnet(struct ifnet *ifp) 109508bcdc58SRobert Watson { 109608bcdc58SRobert Watson 109708bcdc58SRobert Watson mac_init_label(&ifp->if_label); 109808bcdc58SRobert Watson MAC_PERFORM(init_ifnet_label, &ifp->if_label); 109908bcdc58SRobert Watson #ifdef MAC_DEBUG 110008bcdc58SRobert Watson atomic_add_int(&nmacifnets, 1); 110108bcdc58SRobert Watson #endif 110208bcdc58SRobert Watson } 110308bcdc58SRobert Watson 110408bcdc58SRobert Watson void 110508bcdc58SRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 110608bcdc58SRobert Watson { 110708bcdc58SRobert Watson 110808bcdc58SRobert Watson MAC_PERFORM(destroy_ifnet_label, &ifp->if_label); 110908bcdc58SRobert Watson mac_destroy_label(&ifp->if_label); 111008bcdc58SRobert Watson #ifdef MAC_DEBUG 111108bcdc58SRobert Watson atomic_subtract_int(&nmacifnets, 1); 111208bcdc58SRobert Watson #endif 111308bcdc58SRobert Watson } 111408bcdc58SRobert Watson 111508bcdc58SRobert Watson void 111608bcdc58SRobert Watson mac_init_ipq(struct ipq *ipq) 111708bcdc58SRobert Watson { 111808bcdc58SRobert Watson 111908bcdc58SRobert Watson mac_init_label(&ipq->ipq_label); 112008bcdc58SRobert Watson MAC_PERFORM(init_ipq_label, &ipq->ipq_label); 112108bcdc58SRobert Watson #ifdef MAC_DEBUG 112208bcdc58SRobert Watson atomic_add_int(&nmacipqs, 1); 112308bcdc58SRobert Watson #endif 112408bcdc58SRobert Watson } 112508bcdc58SRobert Watson 112608bcdc58SRobert Watson void 112708bcdc58SRobert Watson mac_destroy_ipq(struct ipq *ipq) 112808bcdc58SRobert Watson { 112908bcdc58SRobert Watson 113008bcdc58SRobert Watson MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label); 113108bcdc58SRobert Watson mac_destroy_label(&ipq->ipq_label); 113208bcdc58SRobert Watson #ifdef MAC_DEBUG 113308bcdc58SRobert Watson atomic_subtract_int(&nmacipqs, 1); 113408bcdc58SRobert Watson #endif 113508bcdc58SRobert Watson } 113608bcdc58SRobert Watson 113708bcdc58SRobert Watson void 113808bcdc58SRobert Watson mac_init_socket(struct socket *socket) 113908bcdc58SRobert Watson { 114008bcdc58SRobert Watson 114108bcdc58SRobert Watson mac_init_label(&socket->so_label); 114208bcdc58SRobert Watson mac_init_label(&socket->so_peerlabel); 114308bcdc58SRobert Watson MAC_PERFORM(init_socket_label, &socket->so_label); 114408bcdc58SRobert Watson MAC_PERFORM(init_socket_peer_label, &socket->so_peerlabel); 114508bcdc58SRobert Watson #ifdef MAC_DEBUG 114608bcdc58SRobert Watson atomic_add_int(&nmacsockets, 1); 114708bcdc58SRobert Watson #endif 114808bcdc58SRobert Watson } 114908bcdc58SRobert Watson 115008bcdc58SRobert Watson void 115108bcdc58SRobert Watson mac_destroy_socket(struct socket *socket) 115208bcdc58SRobert Watson { 115308bcdc58SRobert Watson 115408bcdc58SRobert Watson MAC_PERFORM(destroy_socket_label, &socket->so_label); 115508bcdc58SRobert Watson MAC_PERFORM(destroy_socket_peer_label, &socket->so_peerlabel); 115608bcdc58SRobert Watson mac_destroy_label(&socket->so_label); 115708bcdc58SRobert Watson mac_destroy_label(&socket->so_peerlabel); 115808bcdc58SRobert Watson #ifdef MAC_DEBUG 115908bcdc58SRobert Watson atomic_subtract_int(&nmacsockets, 1); 116008bcdc58SRobert Watson #endif 116108bcdc58SRobert Watson } 116208bcdc58SRobert Watson 116308bcdc58SRobert Watson void 116408bcdc58SRobert Watson mac_init_pipe(struct pipe *pipe) 116508bcdc58SRobert Watson { 116608bcdc58SRobert Watson struct label *label; 116708bcdc58SRobert Watson 116808bcdc58SRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 116908bcdc58SRobert Watson mac_init_label(label); 117008bcdc58SRobert Watson pipe->pipe_label = label; 117108bcdc58SRobert Watson pipe->pipe_peer->pipe_label = label; 117208bcdc58SRobert Watson MAC_PERFORM(init_pipe_label, pipe->pipe_label); 117308bcdc58SRobert Watson #ifdef MAC_DEBUG 117408bcdc58SRobert Watson atomic_add_int(&nmacpipes, 1); 117508bcdc58SRobert Watson #endif 117608bcdc58SRobert Watson } 117708bcdc58SRobert Watson 117808bcdc58SRobert Watson void 117908bcdc58SRobert Watson mac_destroy_pipe(struct pipe *pipe) 118008bcdc58SRobert Watson { 118108bcdc58SRobert Watson 118208bcdc58SRobert Watson MAC_PERFORM(destroy_pipe_label, pipe->pipe_label); 118308bcdc58SRobert Watson mac_destroy_label(pipe->pipe_label); 118408bcdc58SRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 118508bcdc58SRobert Watson #ifdef MAC_DEBUG 118608bcdc58SRobert Watson atomic_subtract_int(&nmacpipes, 1); 118708bcdc58SRobert Watson #endif 118808bcdc58SRobert Watson } 118908bcdc58SRobert Watson 119008bcdc58SRobert Watson void 119108bcdc58SRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 119208bcdc58SRobert Watson { 119308bcdc58SRobert Watson 119408bcdc58SRobert Watson mac_init_label(&bpf_d->bd_label); 119508bcdc58SRobert Watson MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label); 119608bcdc58SRobert Watson #ifdef MAC_DEBUG 119708bcdc58SRobert Watson atomic_add_int(&nmacbpfdescs, 1); 119808bcdc58SRobert Watson #endif 119908bcdc58SRobert Watson } 120008bcdc58SRobert Watson 120108bcdc58SRobert Watson void 120208bcdc58SRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 120308bcdc58SRobert Watson { 120408bcdc58SRobert Watson 120508bcdc58SRobert Watson MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label); 120608bcdc58SRobert Watson mac_destroy_label(&bpf_d->bd_label); 120708bcdc58SRobert Watson #ifdef MAC_DEBUG 120808bcdc58SRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 120908bcdc58SRobert Watson #endif 121008bcdc58SRobert Watson } 121108bcdc58SRobert Watson 121208bcdc58SRobert Watson void 121308bcdc58SRobert Watson mac_init_mount(struct mount *mp) 121408bcdc58SRobert Watson { 121508bcdc58SRobert Watson 121608bcdc58SRobert Watson mac_init_label(&mp->mnt_mntlabel); 121708bcdc58SRobert Watson mac_init_label(&mp->mnt_fslabel); 121808bcdc58SRobert Watson MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel); 121908bcdc58SRobert Watson MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel); 122008bcdc58SRobert Watson #ifdef MAC_DEBUG 122108bcdc58SRobert Watson atomic_add_int(&nmacmounts, 1); 122208bcdc58SRobert Watson #endif 122308bcdc58SRobert Watson } 122408bcdc58SRobert Watson 122508bcdc58SRobert Watson void 122608bcdc58SRobert Watson mac_destroy_mount(struct mount *mp) 122708bcdc58SRobert Watson { 122808bcdc58SRobert Watson 122908bcdc58SRobert Watson MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel); 123008bcdc58SRobert Watson MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel); 123108bcdc58SRobert Watson mac_destroy_label(&mp->mnt_fslabel); 123208bcdc58SRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 123308bcdc58SRobert Watson #ifdef MAC_DEBUG 123408bcdc58SRobert Watson atomic_subtract_int(&nmacmounts, 1); 123508bcdc58SRobert Watson #endif 123608bcdc58SRobert Watson } 123708bcdc58SRobert Watson 123808bcdc58SRobert Watson static void 123908bcdc58SRobert Watson mac_init_temp(struct label *label) 124008bcdc58SRobert Watson { 124108bcdc58SRobert Watson 124208bcdc58SRobert Watson mac_init_label(label); 124308bcdc58SRobert Watson MAC_PERFORM(init_temp_label, label); 124408bcdc58SRobert Watson #ifdef MAC_DEBUG 124508bcdc58SRobert Watson atomic_add_int(&nmactemp, 1); 124608bcdc58SRobert Watson #endif 124708bcdc58SRobert Watson } 124808bcdc58SRobert Watson 124908bcdc58SRobert Watson static void 125008bcdc58SRobert Watson mac_destroy_temp(struct label *label) 125108bcdc58SRobert Watson { 125208bcdc58SRobert Watson 125308bcdc58SRobert Watson MAC_PERFORM(destroy_temp_label, label); 125408bcdc58SRobert Watson mac_destroy_label(label); 125508bcdc58SRobert Watson #ifdef MAC_DEBUG 125608bcdc58SRobert Watson atomic_subtract_int(&nmactemp, 1); 125708bcdc58SRobert Watson #endif 125808bcdc58SRobert Watson } 125908bcdc58SRobert Watson 126008bcdc58SRobert Watson void 126108bcdc58SRobert Watson mac_init_vnode(struct vnode *vp) 126208bcdc58SRobert Watson { 126308bcdc58SRobert Watson 126408bcdc58SRobert Watson mac_init_label(&vp->v_label); 126508bcdc58SRobert Watson MAC_PERFORM(init_vnode_label, &vp->v_label); 126608bcdc58SRobert Watson #ifdef MAC_DEBUG 126708bcdc58SRobert Watson atomic_add_int(&nmacvnodes, 1); 126808bcdc58SRobert Watson #endif 126908bcdc58SRobert Watson } 127008bcdc58SRobert Watson 127108bcdc58SRobert Watson void 127208bcdc58SRobert Watson mac_destroy_vnode(struct vnode *vp) 127308bcdc58SRobert Watson { 127408bcdc58SRobert Watson 127508bcdc58SRobert Watson MAC_PERFORM(destroy_vnode_label, &vp->v_label); 127608bcdc58SRobert Watson mac_destroy_label(&vp->v_label); 127708bcdc58SRobert Watson #ifdef MAC_DEBUG 127808bcdc58SRobert Watson atomic_subtract_int(&nmacvnodes, 1); 127908bcdc58SRobert Watson #endif 128008bcdc58SRobert Watson } 128108bcdc58SRobert Watson 128208bcdc58SRobert Watson void 128308bcdc58SRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 128408bcdc58SRobert Watson { 128508bcdc58SRobert Watson 128608bcdc58SRobert Watson mac_init_label(&de->de_label); 128708bcdc58SRobert Watson MAC_PERFORM(init_devfsdirent_label, &de->de_label); 128808bcdc58SRobert Watson #ifdef MAC_DEBUG 128908bcdc58SRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 129008bcdc58SRobert Watson #endif 129108bcdc58SRobert Watson } 129208bcdc58SRobert Watson 129308bcdc58SRobert Watson void 129408bcdc58SRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 129508bcdc58SRobert Watson { 129608bcdc58SRobert Watson 129708bcdc58SRobert Watson MAC_PERFORM(destroy_devfsdirent_label, &de->de_label); 129808bcdc58SRobert Watson mac_destroy_label(&de->de_label); 129908bcdc58SRobert Watson #ifdef MAC_DEBUG 130008bcdc58SRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 130108bcdc58SRobert Watson #endif 130208bcdc58SRobert Watson } 130308bcdc58SRobert Watson 130495fab37eSRobert Watson void 130595fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 130695fab37eSRobert Watson { 130795fab37eSRobert Watson 130895fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 130995fab37eSRobert Watson } 131095fab37eSRobert Watson 131195fab37eSRobert Watson void 131295fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 131395fab37eSRobert Watson { 131495fab37eSRobert Watson 131595fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 131695fab37eSRobert Watson } 131795fab37eSRobert Watson 131895fab37eSRobert Watson /* 131995fab37eSRobert Watson * Support callout for policies that manage their own externalization 132095fab37eSRobert Watson * using extended attributes. 132195fab37eSRobert Watson */ 132295fab37eSRobert Watson static int 132395fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 132495fab37eSRobert Watson { 132595fab37eSRobert Watson int error; 132695fab37eSRobert Watson 132795fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 132895fab37eSRobert Watson &mp->mnt_fslabel); 132995fab37eSRobert Watson 133095fab37eSRobert Watson return (error); 133195fab37eSRobert Watson } 133295fab37eSRobert Watson 133395fab37eSRobert Watson /* 133495fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 133595fab37eSRobert Watson * vnode. 133695fab37eSRobert Watson */ 133795fab37eSRobert Watson static int 133895fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 133995fab37eSRobert Watson { 134095fab37eSRobert Watson int error; 134195fab37eSRobert Watson 134295fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 134395fab37eSRobert Watson 134495fab37eSRobert Watson return (error); 134595fab37eSRobert Watson } 134695fab37eSRobert Watson 134795fab37eSRobert Watson /* 134895fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 134995fab37eSRobert Watson * the mountpoint. 135095fab37eSRobert Watson */ 135195fab37eSRobert Watson void 135295fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 135395fab37eSRobert Watson { 135495fab37eSRobert Watson 135595fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 135695fab37eSRobert Watson &mp->mnt_fslabel); 135795fab37eSRobert Watson 1358e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 135995fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 1360e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 136195fab37eSRobert Watson } 136295fab37eSRobert Watson 136395fab37eSRobert Watson /* 136495fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 136595fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 136695fab37eSRobert Watson * extended attributes. 136795fab37eSRobert Watson */ 136895fab37eSRobert Watson int 136995fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 137095fab37eSRobert Watson { 137195fab37eSRobert Watson struct vnode *vp = ap->a_vp; 137295fab37eSRobert Watson struct mac extmac; 137395fab37eSRobert Watson int buflen, error; 137495fab37eSRobert Watson 137595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 137695fab37eSRobert Watson 137795fab37eSRobert Watson /* 137895fab37eSRobert Watson * Call out to external policies first. Order doesn't really 137995fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 138095fab37eSRobert Watson */ 138195fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 138295fab37eSRobert Watson if (error) 138395fab37eSRobert Watson return (error); 138495fab37eSRobert Watson 138595fab37eSRobert Watson buflen = sizeof(extmac); 138695fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 138795fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 138895fab37eSRobert Watson (char *)&extmac, curthread); 138995fab37eSRobert Watson switch (error) { 139095fab37eSRobert Watson case 0: 139195fab37eSRobert Watson /* Got it */ 139295fab37eSRobert Watson break; 139395fab37eSRobert Watson 139495fab37eSRobert Watson case ENOATTR: 139595fab37eSRobert Watson /* 139695fab37eSRobert Watson * Use the label from the mount point. 139795fab37eSRobert Watson */ 139895fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 139995fab37eSRobert Watson return (0); 140095fab37eSRobert Watson 140195fab37eSRobert Watson case EOPNOTSUPP: 140295fab37eSRobert Watson default: 140395fab37eSRobert Watson /* Fail horribly. */ 140495fab37eSRobert Watson return (error); 140595fab37eSRobert Watson } 140695fab37eSRobert Watson 140795fab37eSRobert Watson if (buflen != sizeof(extmac)) 140895fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 140995fab37eSRobert Watson if (error == 0) 141095fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 141195fab37eSRobert Watson if (error == 0) 1412e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 141395fab37eSRobert Watson else { 141495fab37eSRobert Watson struct vattr va; 141595fab37eSRobert Watson 141695fab37eSRobert Watson printf("Corrupted label on %s", 141795fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 141895fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 141995fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 14206be0c25eSRobert Watson #ifdef MAC_DEBUG 142195fab37eSRobert Watson if (mac_debug_label_fallback) { 142295fab37eSRobert Watson printf(", falling back.\n"); 142395fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 142495fab37eSRobert Watson error = 0; 142595fab37eSRobert Watson } else { 14266be0c25eSRobert Watson #endif 142795fab37eSRobert Watson printf(".\n"); 142895fab37eSRobert Watson error = EPERM; 14296be0c25eSRobert Watson #ifdef MAC_DEBUG 143095fab37eSRobert Watson } 14316be0c25eSRobert Watson #endif 143295fab37eSRobert Watson } 143395fab37eSRobert Watson 143495fab37eSRobert Watson return (error); 143595fab37eSRobert Watson } 143695fab37eSRobert Watson 143795fab37eSRobert Watson /* 143895fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 143995fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 144095fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 144195fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 144295fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 144395fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 144495fab37eSRobert Watson * all vnodes. 144595fab37eSRobert Watson */ 144695fab37eSRobert Watson static int 144795fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 144895fab37eSRobert Watson { 144995fab37eSRobert Watson int error; 145095fab37eSRobert Watson 145195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 145295fab37eSRobert Watson 145395fab37eSRobert Watson if (vp->v_mount == NULL) { 145495fab37eSRobert Watson /* 145595fab37eSRobert Watson Eventually, we probably want to special-case refreshing 145695fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 145795fab37eSRobert Watson that case might be handled here. 145895fab37eSRobert Watson 145995fab37eSRobert Watson mac_update_vnode_deadfs(vp); 146095fab37eSRobert Watson return (0); 146195fab37eSRobert Watson */ 146295fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 146306be2aaaSNate Lawson if (vp->v_type != VNON) 146495fab37eSRobert Watson printf( 146506be2aaaSNate Lawson "vn_refreshlabel: null v_mount with non-VNON\n"); 146695fab37eSRobert Watson return (EBADF); 146795fab37eSRobert Watson } 146895fab37eSRobert Watson 1469e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 147095fab37eSRobert Watson mac_vnode_label_cache_hits++; 147195fab37eSRobert Watson return (0); 147295fab37eSRobert Watson } else 147395fab37eSRobert Watson mac_vnode_label_cache_misses++; 147495fab37eSRobert Watson 147595fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 147695fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 147795fab37eSRobert Watson return (0); 147895fab37eSRobert Watson } 147995fab37eSRobert Watson 148095fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 148195fab37eSRobert Watson switch (error) { 148295fab37eSRobert Watson case EOPNOTSUPP: 148395fab37eSRobert Watson /* 148495fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 148595fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 148695fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 148795fab37eSRobert Watson * about doing this. 148895fab37eSRobert Watson */ 148995fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 149095fab37eSRobert Watson error = 0; 149195fab37eSRobert Watson default: 149295fab37eSRobert Watson return (error); 149395fab37eSRobert Watson } 149495fab37eSRobert Watson } 149595fab37eSRobert Watson 149695fab37eSRobert Watson /* 149795fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 149895fab37eSRobert Watson * function must be called after EA service is available for the vnode, 149995fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 150095fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 150195fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 150295fab37eSRobert Watson */ 150395fab37eSRobert Watson int 150495fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 150595fab37eSRobert Watson { 150695fab37eSRobert Watson struct mac extmac; 150795fab37eSRobert Watson int error; 150895fab37eSRobert Watson 1509e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 151095fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 151195fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 151295fab37eSRobert Watson } else { 151395fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 151495fab37eSRobert Watson if (error) 151595fab37eSRobert Watson return (error); 151695fab37eSRobert Watson 151795fab37eSRobert Watson /* 151895fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 151995fab37eSRobert Watson * disk. If we fail, return a failure to abort the 152095fab37eSRobert Watson * create operation. Really, this failure shouldn't 152195fab37eSRobert Watson * happen except in fairly unusual circumstances (out 152295fab37eSRobert Watson * of disk, etc). 152395fab37eSRobert Watson */ 152495fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 152595fab37eSRobert Watson 152695fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 152795fab37eSRobert Watson if (error) 152895fab37eSRobert Watson return (error); 152995fab37eSRobert Watson 153095fab37eSRobert Watson /* 153195fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 153295fab37eSRobert Watson * directly manage their extended attributes. 153395fab37eSRobert Watson */ 153495fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 153595fab37eSRobert Watson if (error) 153695fab37eSRobert Watson return (error); 153795fab37eSRobert Watson 153895fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 153995fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 154095fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 154195fab37eSRobert Watson if (error == 0) 1542e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 154395fab37eSRobert Watson else { 154495fab37eSRobert Watson #if 0 154595fab37eSRobert Watson /* 154695fab37eSRobert Watson * In theory, we could have fall-back behavior here. 154795fab37eSRobert Watson * It would probably be incorrect. 154895fab37eSRobert Watson */ 154995fab37eSRobert Watson #endif 155095fab37eSRobert Watson return (error); 155195fab37eSRobert Watson } 155295fab37eSRobert Watson } 155395fab37eSRobert Watson 155495fab37eSRobert Watson return (0); 155595fab37eSRobert Watson } 155695fab37eSRobert Watson 155795fab37eSRobert Watson void 155895fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 155995fab37eSRobert Watson { 156095fab37eSRobert Watson int error; 156195fab37eSRobert Watson 156295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 156395fab37eSRobert Watson 156495fab37eSRobert Watson error = vn_refreshlabel(vp, old); 156595fab37eSRobert Watson if (error) { 156695fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 156795fab37eSRobert Watson error); 156895fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 156995fab37eSRobert Watson } 157095fab37eSRobert Watson 157195fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 157295fab37eSRobert Watson } 157395fab37eSRobert Watson 157495fab37eSRobert Watson int 157595fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 157695fab37eSRobert Watson { 157795fab37eSRobert Watson int error, result; 157895fab37eSRobert Watson 157995fab37eSRobert Watson error = vn_refreshlabel(vp, old); 158095fab37eSRobert Watson if (error) 158195fab37eSRobert Watson return (error); 158295fab37eSRobert Watson 158395fab37eSRobert Watson result = 0; 158495fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 158595fab37eSRobert Watson 158695fab37eSRobert Watson return (result); 158795fab37eSRobert Watson } 158895fab37eSRobert Watson 158995fab37eSRobert Watson static int 159095fab37eSRobert Watson mac_externalize(struct label *label, struct mac *mac) 159195fab37eSRobert Watson { 159295fab37eSRobert Watson int error; 159395fab37eSRobert Watson 159495fab37eSRobert Watson mac_init_structmac(mac); 159595fab37eSRobert Watson MAC_CHECK(externalize, label, mac); 159695fab37eSRobert Watson 159795fab37eSRobert Watson return (error); 159895fab37eSRobert Watson } 159995fab37eSRobert Watson 160095fab37eSRobert Watson static int 160195fab37eSRobert Watson mac_internalize(struct label *label, struct mac *mac) 160295fab37eSRobert Watson { 160395fab37eSRobert Watson int error; 160495fab37eSRobert Watson 160595fab37eSRobert Watson mac_init_temp(label); 160695fab37eSRobert Watson MAC_CHECK(internalize, label, mac); 160795fab37eSRobert Watson if (error) 160895fab37eSRobert Watson mac_destroy_temp(label); 160995fab37eSRobert Watson 161095fab37eSRobert Watson return (error); 161195fab37eSRobert Watson } 161295fab37eSRobert Watson 161395fab37eSRobert Watson /* 161495fab37eSRobert Watson * Initialize MAC label for the first kernel process, from which other 161595fab37eSRobert Watson * kernel processes and threads are spawned. 161695fab37eSRobert Watson */ 161795fab37eSRobert Watson void 161895fab37eSRobert Watson mac_create_proc0(struct ucred *cred) 161995fab37eSRobert Watson { 162095fab37eSRobert Watson 162195fab37eSRobert Watson MAC_PERFORM(create_proc0, cred); 162295fab37eSRobert Watson } 162395fab37eSRobert Watson 162495fab37eSRobert Watson /* 162595fab37eSRobert Watson * Initialize MAC label for the first userland process, from which other 162695fab37eSRobert Watson * userland processes and threads are spawned. 162795fab37eSRobert Watson */ 162895fab37eSRobert Watson void 162995fab37eSRobert Watson mac_create_proc1(struct ucred *cred) 163095fab37eSRobert Watson { 163195fab37eSRobert Watson 163295fab37eSRobert Watson MAC_PERFORM(create_proc1, cred); 163395fab37eSRobert Watson } 163495fab37eSRobert Watson 163592dbb82aSRobert Watson void 163692dbb82aSRobert Watson mac_thread_userret(struct thread *td) 163792dbb82aSRobert Watson { 163892dbb82aSRobert Watson 163992dbb82aSRobert Watson MAC_PERFORM(thread_userret, td); 164092dbb82aSRobert Watson } 164192dbb82aSRobert Watson 164295fab37eSRobert Watson /* 164395fab37eSRobert Watson * When a new process is created, its label must be initialized. Generally, 164495fab37eSRobert Watson * this involves inheritence from the parent process, modulo possible 164595fab37eSRobert Watson * deltas. This function allows that processing to take place. 164695fab37eSRobert Watson */ 164795fab37eSRobert Watson void 164895fab37eSRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 164995fab37eSRobert Watson { 165095fab37eSRobert Watson 165195fab37eSRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 165295fab37eSRobert Watson } 165395fab37eSRobert Watson 165495fab37eSRobert Watson int 165595fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 165695fab37eSRobert Watson { 165795fab37eSRobert Watson int error; 165895fab37eSRobert Watson 165995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 166095fab37eSRobert Watson 166195fab37eSRobert Watson if (!mac_enforce_fs) 166295fab37eSRobert Watson return (0); 166395fab37eSRobert Watson 166495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 166595fab37eSRobert Watson if (error) 166695fab37eSRobert Watson return (error); 166795fab37eSRobert Watson 166895fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 166995fab37eSRobert Watson return (error); 167095fab37eSRobert Watson } 167195fab37eSRobert Watson 167295fab37eSRobert Watson int 167395fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 167495fab37eSRobert Watson { 167595fab37eSRobert Watson int error; 167695fab37eSRobert Watson 167795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 167895fab37eSRobert Watson 167995fab37eSRobert Watson if (!mac_enforce_fs) 168095fab37eSRobert Watson return (0); 168195fab37eSRobert Watson 168295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 168395fab37eSRobert Watson if (error) 168495fab37eSRobert Watson return (error); 168595fab37eSRobert Watson 168695fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 168795fab37eSRobert Watson return (error); 168895fab37eSRobert Watson } 168995fab37eSRobert Watson 169095fab37eSRobert Watson int 169195fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 169295fab37eSRobert Watson { 169395fab37eSRobert Watson int error; 169495fab37eSRobert Watson 169595fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 169695fab37eSRobert Watson 169795fab37eSRobert Watson if (!mac_enforce_fs) 169895fab37eSRobert Watson return (0); 169995fab37eSRobert Watson 170095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 170195fab37eSRobert Watson if (error) 170295fab37eSRobert Watson return (error); 170395fab37eSRobert Watson 170495fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 170595fab37eSRobert Watson return (error); 170695fab37eSRobert Watson } 170795fab37eSRobert Watson 170895fab37eSRobert Watson int 170995fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 171095fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 171195fab37eSRobert Watson { 171295fab37eSRobert Watson int error; 171395fab37eSRobert Watson 171495fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 171595fab37eSRobert Watson 171695fab37eSRobert Watson if (!mac_enforce_fs) 171795fab37eSRobert Watson return (0); 171895fab37eSRobert Watson 171995fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 172095fab37eSRobert Watson if (error) 172195fab37eSRobert Watson return (error); 172295fab37eSRobert Watson 172395fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 172495fab37eSRobert Watson return (error); 172595fab37eSRobert Watson } 172695fab37eSRobert Watson 172795fab37eSRobert Watson int 172895fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 172995fab37eSRobert Watson struct componentname *cnp) 173095fab37eSRobert Watson { 173195fab37eSRobert Watson int error; 173295fab37eSRobert Watson 173395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 173495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 173595fab37eSRobert Watson 173695fab37eSRobert Watson if (!mac_enforce_fs) 173795fab37eSRobert Watson return (0); 173895fab37eSRobert Watson 173995fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 174095fab37eSRobert Watson if (error) 174195fab37eSRobert Watson return (error); 174295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 174395fab37eSRobert Watson if (error) 174495fab37eSRobert Watson return (error); 174595fab37eSRobert Watson 174695fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 174795fab37eSRobert Watson &vp->v_label, cnp); 174895fab37eSRobert Watson return (error); 174995fab37eSRobert Watson } 175095fab37eSRobert Watson 175195fab37eSRobert Watson int 175295fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 175395fab37eSRobert Watson acl_type_t type) 175495fab37eSRobert Watson { 175595fab37eSRobert Watson int error; 175695fab37eSRobert Watson 175795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 175895fab37eSRobert Watson 175995fab37eSRobert Watson if (!mac_enforce_fs) 176095fab37eSRobert Watson return (0); 176195fab37eSRobert Watson 176295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 176395fab37eSRobert Watson if (error) 176495fab37eSRobert Watson return (error); 176595fab37eSRobert Watson 176695fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 176795fab37eSRobert Watson return (error); 176895fab37eSRobert Watson } 176995fab37eSRobert Watson 177095fab37eSRobert Watson int 177195fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 177295fab37eSRobert Watson { 177395fab37eSRobert Watson int error; 177495fab37eSRobert Watson 1775851704bbSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1776851704bbSRobert Watson 177795fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 177895fab37eSRobert Watson return (0); 177995fab37eSRobert Watson 178095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 178195fab37eSRobert Watson if (error) 178295fab37eSRobert Watson return (error); 178395fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 178495fab37eSRobert Watson 178595fab37eSRobert Watson return (error); 178695fab37eSRobert Watson } 178795fab37eSRobert Watson 178895fab37eSRobert Watson int 178995fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 179095fab37eSRobert Watson { 179195fab37eSRobert Watson int error; 179295fab37eSRobert Watson 179395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 179495fab37eSRobert Watson 179595fab37eSRobert Watson if (!mac_enforce_fs) 179695fab37eSRobert Watson return (0); 179795fab37eSRobert Watson 179895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 179995fab37eSRobert Watson if (error) 180095fab37eSRobert Watson return (error); 180195fab37eSRobert Watson 180295fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 180395fab37eSRobert Watson return (error); 180495fab37eSRobert Watson } 180595fab37eSRobert Watson 180695fab37eSRobert Watson int 180795fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 180895fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 180995fab37eSRobert Watson { 181095fab37eSRobert Watson int error; 181195fab37eSRobert Watson 181295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 181395fab37eSRobert Watson 181495fab37eSRobert Watson if (!mac_enforce_fs) 181595fab37eSRobert Watson return (0); 181695fab37eSRobert Watson 181795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 181895fab37eSRobert Watson if (error) 181995fab37eSRobert Watson return (error); 182095fab37eSRobert Watson 182195fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 182295fab37eSRobert Watson attrnamespace, name, uio); 182395fab37eSRobert Watson return (error); 182495fab37eSRobert Watson } 182595fab37eSRobert Watson 182695fab37eSRobert Watson int 182795fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 182895fab37eSRobert Watson struct componentname *cnp) 182995fab37eSRobert Watson { 183095fab37eSRobert Watson int error; 183195fab37eSRobert Watson 183295fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 183395fab37eSRobert Watson 183495fab37eSRobert Watson if (!mac_enforce_fs) 183595fab37eSRobert Watson return (0); 183695fab37eSRobert Watson 183795fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 183895fab37eSRobert Watson if (error) 183995fab37eSRobert Watson return (error); 184095fab37eSRobert Watson 184195fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 184295fab37eSRobert Watson return (error); 184395fab37eSRobert Watson } 184495fab37eSRobert Watson 184595fab37eSRobert Watson vm_prot_t 184695fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 184795fab37eSRobert Watson { 184895fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 184995fab37eSRobert Watson 1850ca7850c3SRobert Watson if (!mac_enforce_vm) 1851ca7850c3SRobert Watson return (result); 1852ca7850c3SRobert Watson 185395fab37eSRobert Watson /* 185495fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 185595fab37eSRobert Watson */ 185695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 185795fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 185895fab37eSRobert Watson newmapping); 185995fab37eSRobert Watson return (result); 186095fab37eSRobert Watson } 186195fab37eSRobert Watson 186295fab37eSRobert Watson int 186395fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 186495fab37eSRobert Watson { 186595fab37eSRobert Watson int error; 186695fab37eSRobert Watson 186795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 186895fab37eSRobert Watson 186995fab37eSRobert Watson if (!mac_enforce_fs) 187095fab37eSRobert Watson return (0); 187195fab37eSRobert Watson 187295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 187395fab37eSRobert Watson if (error) 187495fab37eSRobert Watson return (error); 187595fab37eSRobert Watson 187695fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 187795fab37eSRobert Watson return (error); 187895fab37eSRobert Watson } 187995fab37eSRobert Watson 188095fab37eSRobert Watson int 1881177142e4SRobert Watson mac_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1882177142e4SRobert Watson struct vnode *vp) 18837f724f8bSRobert Watson { 18847f724f8bSRobert Watson int error; 18857f724f8bSRobert Watson 18867f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 18877f724f8bSRobert Watson 18887f724f8bSRobert Watson if (!mac_enforce_fs) 18897f724f8bSRobert Watson return (0); 18907f724f8bSRobert Watson 1891177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 18927f724f8bSRobert Watson if (error) 18937f724f8bSRobert Watson return (error); 18947f724f8bSRobert Watson 1895177142e4SRobert Watson MAC_CHECK(check_vnode_poll, active_cred, file_cred, vp, 1896177142e4SRobert Watson &vp->v_label); 18977f724f8bSRobert Watson 18987f724f8bSRobert Watson return (error); 18997f724f8bSRobert Watson } 19007f724f8bSRobert Watson 19017f724f8bSRobert Watson int 1902177142e4SRobert Watson mac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 1903177142e4SRobert Watson struct vnode *vp) 19047f724f8bSRobert Watson { 19057f724f8bSRobert Watson int error; 19067f724f8bSRobert Watson 19077f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 19087f724f8bSRobert Watson 19097f724f8bSRobert Watson if (!mac_enforce_fs) 19107f724f8bSRobert Watson return (0); 19117f724f8bSRobert Watson 1912177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 19137f724f8bSRobert Watson if (error) 19147f724f8bSRobert Watson return (error); 19157f724f8bSRobert Watson 1916177142e4SRobert Watson MAC_CHECK(check_vnode_read, active_cred, file_cred, vp, 1917177142e4SRobert Watson &vp->v_label); 19187f724f8bSRobert Watson 19197f724f8bSRobert Watson return (error); 19207f724f8bSRobert Watson } 19217f724f8bSRobert Watson 19227f724f8bSRobert Watson int 192395fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 192495fab37eSRobert Watson { 192595fab37eSRobert Watson int error; 192695fab37eSRobert Watson 192795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 192895fab37eSRobert Watson 192995fab37eSRobert Watson if (!mac_enforce_fs) 193095fab37eSRobert Watson return (0); 193195fab37eSRobert Watson 193295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 193395fab37eSRobert Watson if (error) 193495fab37eSRobert Watson return (error); 193595fab37eSRobert Watson 193695fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 193795fab37eSRobert Watson return (error); 193895fab37eSRobert Watson } 193995fab37eSRobert Watson 194095fab37eSRobert Watson int 194195fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 194295fab37eSRobert Watson { 194395fab37eSRobert Watson int error; 194495fab37eSRobert Watson 194595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 194695fab37eSRobert Watson 194795fab37eSRobert Watson if (!mac_enforce_fs) 194895fab37eSRobert Watson return (0); 194995fab37eSRobert Watson 195095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 195195fab37eSRobert Watson if (error) 195295fab37eSRobert Watson return (error); 195395fab37eSRobert Watson 195495fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 195595fab37eSRobert Watson return (error); 195695fab37eSRobert Watson } 195795fab37eSRobert Watson 195895fab37eSRobert Watson static int 195995fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 196095fab37eSRobert Watson struct label *newlabel) 196195fab37eSRobert Watson { 196295fab37eSRobert Watson int error; 196395fab37eSRobert Watson 196495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 196595fab37eSRobert Watson 196695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 196795fab37eSRobert Watson if (error) 196895fab37eSRobert Watson return (error); 196995fab37eSRobert Watson 197095fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 197195fab37eSRobert Watson 197295fab37eSRobert Watson return (error); 197395fab37eSRobert Watson } 197495fab37eSRobert Watson 197595fab37eSRobert Watson int 197695fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 197795fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 197895fab37eSRobert Watson { 197995fab37eSRobert Watson int error; 198095fab37eSRobert Watson 198195fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 198295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 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 error = vn_refreshlabel(vp, cred); 199195fab37eSRobert Watson if (error) 199295fab37eSRobert Watson return (error); 199395fab37eSRobert Watson 199495fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 199595fab37eSRobert Watson &vp->v_label, cnp); 199695fab37eSRobert Watson return (error); 199795fab37eSRobert Watson } 199895fab37eSRobert Watson 199995fab37eSRobert Watson int 200095fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 200195fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 200295fab37eSRobert Watson { 200395fab37eSRobert Watson int error; 200495fab37eSRobert Watson 200595fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 200695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 200795fab37eSRobert Watson 200895fab37eSRobert Watson if (!mac_enforce_fs) 200995fab37eSRobert Watson return (0); 201095fab37eSRobert Watson 201195fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 201295fab37eSRobert Watson if (error) 201395fab37eSRobert Watson return (error); 201495fab37eSRobert Watson if (vp != NULL) { 201595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 201695fab37eSRobert Watson if (error) 201795fab37eSRobert Watson return (error); 201895fab37eSRobert Watson } 201995fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 202095fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 202195fab37eSRobert Watson return (error); 202295fab37eSRobert Watson } 202395fab37eSRobert Watson 202495fab37eSRobert Watson int 202595fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 202695fab37eSRobert Watson { 202795fab37eSRobert Watson int error; 202895fab37eSRobert Watson 202995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 203095fab37eSRobert Watson 203195fab37eSRobert Watson if (!mac_enforce_fs) 203295fab37eSRobert Watson return (0); 203395fab37eSRobert Watson 203495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 203595fab37eSRobert Watson if (error) 203695fab37eSRobert Watson return (error); 203795fab37eSRobert Watson 203895fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 203995fab37eSRobert Watson return (error); 204095fab37eSRobert Watson } 204195fab37eSRobert Watson 204295fab37eSRobert Watson int 204395fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 204495fab37eSRobert Watson struct acl *acl) 204595fab37eSRobert Watson { 204695fab37eSRobert Watson int error; 204795fab37eSRobert Watson 204895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 204995fab37eSRobert Watson 205095fab37eSRobert Watson if (!mac_enforce_fs) 205195fab37eSRobert Watson return (0); 205295fab37eSRobert Watson 205395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 205495fab37eSRobert Watson if (error) 205595fab37eSRobert Watson return (error); 205695fab37eSRobert Watson 205795fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 205895fab37eSRobert Watson return (error); 205995fab37eSRobert Watson } 206095fab37eSRobert Watson 206195fab37eSRobert Watson int 206295fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 206395fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 206495fab37eSRobert Watson { 206595fab37eSRobert Watson int error; 206695fab37eSRobert Watson 206795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 206895fab37eSRobert Watson 206995fab37eSRobert Watson if (!mac_enforce_fs) 207095fab37eSRobert Watson return (0); 207195fab37eSRobert Watson 207295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 207395fab37eSRobert Watson if (error) 207495fab37eSRobert Watson return (error); 207595fab37eSRobert Watson 207695fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 207795fab37eSRobert Watson attrnamespace, name, uio); 207895fab37eSRobert Watson return (error); 207995fab37eSRobert Watson } 208095fab37eSRobert Watson 208195fab37eSRobert Watson int 208295fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 208395fab37eSRobert Watson { 208495fab37eSRobert Watson int error; 208595fab37eSRobert Watson 208695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 208795fab37eSRobert Watson 208895fab37eSRobert Watson if (!mac_enforce_fs) 208995fab37eSRobert Watson return (0); 209095fab37eSRobert Watson 209195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 209295fab37eSRobert Watson if (error) 209395fab37eSRobert Watson return (error); 209495fab37eSRobert Watson 209595fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 209695fab37eSRobert Watson return (error); 209795fab37eSRobert Watson } 209895fab37eSRobert Watson 209995fab37eSRobert Watson int 210095fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 210195fab37eSRobert Watson { 210295fab37eSRobert Watson int error; 210395fab37eSRobert Watson 210495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 210595fab37eSRobert Watson 210695fab37eSRobert Watson if (!mac_enforce_fs) 210795fab37eSRobert Watson return (0); 210895fab37eSRobert Watson 210995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 211095fab37eSRobert Watson if (error) 211195fab37eSRobert Watson return (error); 211295fab37eSRobert Watson 211395fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 211495fab37eSRobert Watson return (error); 211595fab37eSRobert Watson } 211695fab37eSRobert Watson 211795fab37eSRobert Watson int 211895fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 211995fab37eSRobert Watson gid_t gid) 212095fab37eSRobert Watson { 212195fab37eSRobert Watson int error; 212295fab37eSRobert Watson 212395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 212495fab37eSRobert Watson 212595fab37eSRobert Watson if (!mac_enforce_fs) 212695fab37eSRobert Watson return (0); 212795fab37eSRobert Watson 212895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 212995fab37eSRobert Watson if (error) 213095fab37eSRobert Watson return (error); 213195fab37eSRobert Watson 213295fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 213395fab37eSRobert Watson return (error); 213495fab37eSRobert Watson } 213595fab37eSRobert Watson 213695fab37eSRobert Watson int 213795fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 213895fab37eSRobert Watson struct timespec atime, struct timespec mtime) 213995fab37eSRobert Watson { 214095fab37eSRobert Watson int error; 214195fab37eSRobert Watson 214295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 214395fab37eSRobert Watson 214495fab37eSRobert Watson if (!mac_enforce_fs) 214595fab37eSRobert Watson return (0); 214695fab37eSRobert Watson 214795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 214895fab37eSRobert Watson if (error) 214995fab37eSRobert Watson return (error); 215095fab37eSRobert Watson 215195fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 215295fab37eSRobert Watson mtime); 215395fab37eSRobert Watson return (error); 215495fab37eSRobert Watson } 215595fab37eSRobert Watson 215695fab37eSRobert Watson int 2157177142e4SRobert Watson mac_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 2158177142e4SRobert Watson struct vnode *vp) 215995fab37eSRobert Watson { 216095fab37eSRobert Watson int error; 216195fab37eSRobert Watson 216295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 216395fab37eSRobert Watson 216495fab37eSRobert Watson if (!mac_enforce_fs) 216595fab37eSRobert Watson return (0); 216695fab37eSRobert Watson 2167177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 216895fab37eSRobert Watson if (error) 216995fab37eSRobert Watson return (error); 217095fab37eSRobert Watson 2171177142e4SRobert Watson MAC_CHECK(check_vnode_stat, active_cred, file_cred, vp, 2172177142e4SRobert Watson &vp->v_label); 217395fab37eSRobert Watson return (error); 217495fab37eSRobert Watson } 217595fab37eSRobert Watson 21767f724f8bSRobert Watson int 2177177142e4SRobert Watson mac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred, 2178177142e4SRobert Watson struct vnode *vp) 21797f724f8bSRobert Watson { 21807f724f8bSRobert Watson int error; 21817f724f8bSRobert Watson 21827f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 21837f724f8bSRobert Watson 21847f724f8bSRobert Watson if (!mac_enforce_fs) 21857f724f8bSRobert Watson return (0); 21867f724f8bSRobert Watson 2187177142e4SRobert Watson error = vn_refreshlabel(vp, active_cred); 21887f724f8bSRobert Watson if (error) 21897f724f8bSRobert Watson return (error); 21907f724f8bSRobert Watson 2191177142e4SRobert Watson MAC_CHECK(check_vnode_write, active_cred, file_cred, vp, 2192177142e4SRobert Watson &vp->v_label); 21937f724f8bSRobert Watson 21947f724f8bSRobert Watson return (error); 21957f724f8bSRobert Watson } 21967f724f8bSRobert Watson 219795fab37eSRobert Watson /* 219895fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 219995fab37eSRobert Watson * permission allowed for each object type we know about in its 220095fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 220195fab37eSRobert Watson * know) when necessary. The process lock is not held here. 220295fab37eSRobert Watson */ 220395fab37eSRobert Watson static void 220495fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 220595fab37eSRobert Watson { 220695fab37eSRobert Watson 220795fab37eSRobert Watson /* XXX freeze all other threads */ 220895fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 220995fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 221095fab37eSRobert Watson /* XXX allow other threads to continue */ 221195fab37eSRobert Watson } 221295fab37eSRobert Watson 221395fab37eSRobert Watson static __inline const char * 221495fab37eSRobert Watson prot2str(vm_prot_t prot) 221595fab37eSRobert Watson { 221695fab37eSRobert Watson 221795fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 221895fab37eSRobert Watson case VM_PROT_READ: 221995fab37eSRobert Watson return ("r--"); 222095fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 222195fab37eSRobert Watson return ("rw-"); 222295fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 222395fab37eSRobert Watson return ("r-x"); 222495fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 222595fab37eSRobert Watson return ("rwx"); 222695fab37eSRobert Watson case VM_PROT_WRITE: 222795fab37eSRobert Watson return ("-w-"); 222895fab37eSRobert Watson case VM_PROT_EXECUTE: 222995fab37eSRobert Watson return ("--x"); 223095fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 223195fab37eSRobert Watson return ("-wx"); 223295fab37eSRobert Watson default: 223395fab37eSRobert Watson return ("---"); 223495fab37eSRobert Watson } 223595fab37eSRobert Watson } 223695fab37eSRobert Watson 223795fab37eSRobert Watson static void 223895fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 223995fab37eSRobert Watson struct vm_map *map) 224095fab37eSRobert Watson { 224195fab37eSRobert Watson struct vm_map_entry *vme; 224295fab37eSRobert Watson vm_prot_t result, revokeperms; 224395fab37eSRobert Watson vm_object_t object; 224495fab37eSRobert Watson vm_ooffset_t offset; 224595fab37eSRobert Watson struct vnode *vp; 224695fab37eSRobert Watson 2247c0f39905SRobert Watson if (!mac_mmap_revocation) 2248c0f39905SRobert Watson return; 2249c0f39905SRobert Watson 225095fab37eSRobert Watson vm_map_lock_read(map); 225195fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 225295fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 225395fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 225495fab37eSRobert Watson vme->object.sub_map); 225595fab37eSRobert Watson continue; 225695fab37eSRobert Watson } 225795fab37eSRobert Watson /* 225895fab37eSRobert Watson * Skip over entries that obviously are not shared. 225995fab37eSRobert Watson */ 226095fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 226195fab37eSRobert Watson !vme->max_protection) 226295fab37eSRobert Watson continue; 226395fab37eSRobert Watson /* 226495fab37eSRobert Watson * Drill down to the deepest backing object. 226595fab37eSRobert Watson */ 226695fab37eSRobert Watson offset = vme->offset; 226795fab37eSRobert Watson object = vme->object.vm_object; 226895fab37eSRobert Watson if (object == NULL) 226995fab37eSRobert Watson continue; 227095fab37eSRobert Watson while (object->backing_object != NULL) { 227195fab37eSRobert Watson object = object->backing_object; 227295fab37eSRobert Watson offset += object->backing_object_offset; 227395fab37eSRobert Watson } 227495fab37eSRobert Watson /* 227595fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 227695fab37eSRobert Watson * by the MAC system, so only things with backing by a 227795fab37eSRobert Watson * normal object (read: vnodes) are checked. 227895fab37eSRobert Watson */ 227995fab37eSRobert Watson if (object->type != OBJT_VNODE) 228095fab37eSRobert Watson continue; 228195fab37eSRobert Watson vp = (struct vnode *)object->handle; 228295fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 228395fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 228495fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 228595fab37eSRobert Watson /* 228695fab37eSRobert Watson * Find out what maximum protection we may be allowing 228795fab37eSRobert Watson * now but a policy needs to get removed. 228895fab37eSRobert Watson */ 228995fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 229095fab37eSRobert Watson if (!revokeperms) 229195fab37eSRobert Watson continue; 2292b656366bSBruce Evans printf("pid %ld: revoking %s perms from %#lx:%ld " 2293b656366bSBruce Evans "(max %s/cur %s)\n", (long)td->td_proc->p_pid, 2294b656366bSBruce Evans prot2str(revokeperms), (u_long)vme->start, 2295b656366bSBruce Evans (long)(vme->end - vme->start), 229695fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 229795fab37eSRobert Watson vm_map_lock_upgrade(map); 229895fab37eSRobert Watson /* 229995fab37eSRobert Watson * This is the really simple case: if a map has more 230095fab37eSRobert Watson * max_protection than is allowed, but it's not being 230195fab37eSRobert Watson * actually used (that is, the current protection is 230295fab37eSRobert Watson * still allowed), we can just wipe it out and do 230395fab37eSRobert Watson * nothing more. 230495fab37eSRobert Watson */ 230595fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 230695fab37eSRobert Watson vme->max_protection -= revokeperms; 230795fab37eSRobert Watson } else { 230895fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 230995fab37eSRobert Watson /* 231095fab37eSRobert Watson * In the more complicated case, flush out all 231195fab37eSRobert Watson * pending changes to the object then turn it 231295fab37eSRobert Watson * copy-on-write. 231395fab37eSRobert Watson */ 231495fab37eSRobert Watson vm_object_reference(object); 231595fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 231695fab37eSRobert Watson vm_object_page_clean(object, 231795fab37eSRobert Watson OFF_TO_IDX(offset), 231895fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 231995fab37eSRobert Watson PAGE_MASK), 232095fab37eSRobert Watson OBJPC_SYNC); 232195fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 232295fab37eSRobert Watson vm_object_deallocate(object); 232395fab37eSRobert Watson /* 232495fab37eSRobert Watson * Why bother if there's no read permissions 232595fab37eSRobert Watson * anymore? For the rest, we need to leave 232695fab37eSRobert Watson * the write permissions on for COW, or 232795fab37eSRobert Watson * remove them entirely if configured to. 232895fab37eSRobert Watson */ 232995fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 233095fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 233195fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 233295fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 233395fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 233495fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 233595fab37eSRobert Watson } 233695fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 233795fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 233895fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 233995fab37eSRobert Watson } 234095fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 234195fab37eSRobert Watson vme->max_protection = 0; 234295fab37eSRobert Watson vme->protection = 0; 234395fab37eSRobert Watson } 234495fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 234595fab37eSRobert Watson vme->protection & ~revokeperms); 234695fab37eSRobert Watson vm_map_simplify_entry(map, vme); 234795fab37eSRobert Watson } 234895fab37eSRobert Watson vm_map_lock_downgrade(map); 234995fab37eSRobert Watson } 235095fab37eSRobert Watson vm_map_unlock_read(map); 235195fab37eSRobert Watson } 235295fab37eSRobert Watson 235395fab37eSRobert Watson /* 235495fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 235595fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 235695fab37eSRobert Watson * buffer cache. 235795fab37eSRobert Watson */ 235895fab37eSRobert Watson static void 235995fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 236095fab37eSRobert Watson { 236195fab37eSRobert Watson 236295fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 236395fab37eSRobert Watson } 236495fab37eSRobert Watson 236595fab37eSRobert Watson void 236695fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 236795fab37eSRobert Watson { 236895fab37eSRobert Watson 236995fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 237095fab37eSRobert Watson } 237195fab37eSRobert Watson 237295fab37eSRobert Watson void 237395fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 237495fab37eSRobert Watson { 237595fab37eSRobert Watson 237695fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 237795fab37eSRobert Watson } 237895fab37eSRobert Watson 237995fab37eSRobert Watson void 238095fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 238195fab37eSRobert Watson { 238295fab37eSRobert Watson 238395fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 238495fab37eSRobert Watson } 238595fab37eSRobert Watson 238695fab37eSRobert Watson void 238795fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 238895fab37eSRobert Watson { 238995fab37eSRobert Watson 239095fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 239195fab37eSRobert Watson } 239295fab37eSRobert Watson 239395fab37eSRobert Watson void 239495fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 239595fab37eSRobert Watson { 239695fab37eSRobert Watson 239795fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 239895fab37eSRobert Watson } 239995fab37eSRobert Watson 240095fab37eSRobert Watson void 240195fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 240295fab37eSRobert Watson struct socket *newsocket) 240395fab37eSRobert Watson { 240495fab37eSRobert Watson 240595fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 240695fab37eSRobert Watson newsocket, &newsocket->so_label); 240795fab37eSRobert Watson } 240895fab37eSRobert Watson 240995fab37eSRobert Watson static void 241095fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 241195fab37eSRobert Watson struct label *newlabel) 241295fab37eSRobert Watson { 241395fab37eSRobert Watson 241495fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 241595fab37eSRobert Watson } 241695fab37eSRobert Watson 241795fab37eSRobert Watson static void 241895fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 241995fab37eSRobert Watson { 242095fab37eSRobert Watson 242195fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 242295fab37eSRobert Watson } 242395fab37eSRobert Watson 242495fab37eSRobert Watson void 242595fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 242695fab37eSRobert Watson { 242795fab37eSRobert Watson 242895fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 242995fab37eSRobert Watson socket, &socket->so_peerlabel); 243095fab37eSRobert Watson } 243195fab37eSRobert Watson 243295fab37eSRobert Watson void 243395fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 243495fab37eSRobert Watson struct socket *newsocket) 243595fab37eSRobert Watson { 243695fab37eSRobert Watson 243795fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 243895fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 243995fab37eSRobert Watson } 244095fab37eSRobert Watson 244195fab37eSRobert Watson void 244295fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 244395fab37eSRobert Watson { 244495fab37eSRobert Watson 244595fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 244695fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 244795fab37eSRobert Watson } 244895fab37eSRobert Watson 244995fab37eSRobert Watson void 245095fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 245195fab37eSRobert Watson { 245295fab37eSRobert Watson 245395fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 245495fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 245595fab37eSRobert Watson } 245695fab37eSRobert Watson 245795fab37eSRobert Watson void 245895fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 245995fab37eSRobert Watson { 246095fab37eSRobert Watson 246195fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 246295fab37eSRobert Watson &ipq->ipq_label); 246395fab37eSRobert Watson } 246495fab37eSRobert Watson 246595fab37eSRobert Watson void 246695fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 246795fab37eSRobert Watson { 246895fab37eSRobert Watson 246995fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 247095fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 247195fab37eSRobert Watson } 247295fab37eSRobert Watson 247395fab37eSRobert Watson void 247495fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 247595fab37eSRobert Watson { 247695fab37eSRobert Watson 247795fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 247895fab37eSRobert Watson &mbuf->m_pkthdr.label); 247995fab37eSRobert Watson } 248095fab37eSRobert Watson 248195fab37eSRobert Watson void 248295fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 248395fab37eSRobert Watson { 248495fab37eSRobert Watson 248595fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 248695fab37eSRobert Watson &mbuf->m_pkthdr.label); 248795fab37eSRobert Watson } 248895fab37eSRobert Watson 248995fab37eSRobert Watson void 249095fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 249195fab37eSRobert Watson { 249295fab37eSRobert Watson 249395fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 249495fab37eSRobert Watson &mbuf->m_pkthdr.label); 249595fab37eSRobert Watson } 249695fab37eSRobert Watson 249795fab37eSRobert Watson void 249895fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 249995fab37eSRobert Watson struct mbuf *newmbuf) 250095fab37eSRobert Watson { 250195fab37eSRobert Watson 250295fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 250395fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 250495fab37eSRobert Watson &newmbuf->m_pkthdr.label); 250595fab37eSRobert Watson } 250695fab37eSRobert Watson 250795fab37eSRobert Watson void 250895fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 250995fab37eSRobert Watson { 251095fab37eSRobert Watson 251195fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 251295fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 251395fab37eSRobert Watson } 251495fab37eSRobert Watson 251595fab37eSRobert Watson int 251695fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 251795fab37eSRobert Watson { 251895fab37eSRobert Watson int result; 251995fab37eSRobert Watson 252095fab37eSRobert Watson result = 1; 252195fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 252295fab37eSRobert Watson ipq, &ipq->ipq_label); 252395fab37eSRobert Watson 252495fab37eSRobert Watson return (result); 252595fab37eSRobert Watson } 252695fab37eSRobert Watson 252795fab37eSRobert Watson void 252895fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 252995fab37eSRobert Watson { 253095fab37eSRobert Watson 253195fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 253295fab37eSRobert Watson &ipq->ipq_label); 253395fab37eSRobert Watson } 253495fab37eSRobert Watson 253595fab37eSRobert Watson void 253695fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 253795fab37eSRobert Watson { 253895fab37eSRobert Watson 253995fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 254095fab37eSRobert Watson &mbuf->m_pkthdr.label); 254195fab37eSRobert Watson } 254295fab37eSRobert Watson 254395fab37eSRobert Watson void 254495fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 254595fab37eSRobert Watson { 254695fab37eSRobert Watson 254795fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 254895fab37eSRobert Watson &mp->mnt_fslabel); 254995fab37eSRobert Watson } 255095fab37eSRobert Watson 255195fab37eSRobert Watson void 255295fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 255395fab37eSRobert Watson { 255495fab37eSRobert Watson 255595fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 255695fab37eSRobert Watson &mp->mnt_fslabel); 255795fab37eSRobert Watson } 255895fab37eSRobert Watson 255995fab37eSRobert Watson int 256095fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 256195fab37eSRobert Watson { 256295fab37eSRobert Watson int error; 256395fab37eSRobert Watson 256495fab37eSRobert Watson if (!mac_enforce_network) 256595fab37eSRobert Watson return (0); 256695fab37eSRobert Watson 256795fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 256895fab37eSRobert Watson &ifnet->if_label); 256995fab37eSRobert Watson 257095fab37eSRobert Watson return (error); 257195fab37eSRobert Watson } 257295fab37eSRobert Watson 257395fab37eSRobert Watson static int 257495fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 257595fab37eSRobert Watson { 257695fab37eSRobert Watson int error; 257795fab37eSRobert Watson 257895fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 257995fab37eSRobert Watson 258095fab37eSRobert Watson return (error); 258195fab37eSRobert Watson } 258295fab37eSRobert Watson 258395fab37eSRobert Watson int 258495fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 258595fab37eSRobert Watson { 258695fab37eSRobert Watson int error; 258795fab37eSRobert Watson 258895fab37eSRobert Watson if (!mac_enforce_process) 258995fab37eSRobert Watson return (0); 259095fab37eSRobert Watson 259195fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 259295fab37eSRobert Watson 259395fab37eSRobert Watson return (error); 259495fab37eSRobert Watson } 259595fab37eSRobert Watson 259695fab37eSRobert Watson int 259795fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 259895fab37eSRobert Watson { 259995fab37eSRobert Watson int error; 260095fab37eSRobert Watson 260195fab37eSRobert Watson if (!mac_enforce_network) 260295fab37eSRobert Watson return (0); 260395fab37eSRobert Watson 260495fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 260595fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 260695fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 260795fab37eSRobert Watson ifnet->if_unit); 260895fab37eSRobert Watson 260995fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 261095fab37eSRobert Watson &mbuf->m_pkthdr.label); 261195fab37eSRobert Watson 261295fab37eSRobert Watson return (error); 261395fab37eSRobert Watson } 261495fab37eSRobert Watson 261595fab37eSRobert Watson int 261695fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 261795fab37eSRobert Watson { 261895fab37eSRobert Watson int error; 261995fab37eSRobert Watson 262095fab37eSRobert Watson if (!mac_enforce_fs) 262195fab37eSRobert Watson return (0); 262295fab37eSRobert Watson 262395fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 262495fab37eSRobert Watson 262595fab37eSRobert Watson return (error); 262695fab37eSRobert Watson } 262795fab37eSRobert Watson 262895fab37eSRobert Watson int 262995fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 263095fab37eSRobert Watson void *data) 263195fab37eSRobert Watson { 263295fab37eSRobert Watson int error; 263395fab37eSRobert Watson 26341aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26351aa37f53SRobert Watson 26361aa37f53SRobert Watson if (!mac_enforce_pipe) 26371aa37f53SRobert Watson return (0); 26381aa37f53SRobert Watson 263995fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 264095fab37eSRobert Watson 264195fab37eSRobert Watson return (error); 264295fab37eSRobert Watson } 264395fab37eSRobert Watson 264495fab37eSRobert Watson int 2645c024c3eeSRobert Watson mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe) 264695fab37eSRobert Watson { 264795fab37eSRobert Watson int error; 264895fab37eSRobert Watson 26491aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26501aa37f53SRobert Watson 26511aa37f53SRobert Watson if (!mac_enforce_pipe) 26521aa37f53SRobert Watson return (0); 26531aa37f53SRobert Watson 2654c024c3eeSRobert Watson MAC_CHECK(check_pipe_poll, cred, pipe, pipe->pipe_label); 2655c024c3eeSRobert Watson 2656c024c3eeSRobert Watson return (error); 2657c024c3eeSRobert Watson } 2658c024c3eeSRobert Watson 2659c024c3eeSRobert Watson int 2660c024c3eeSRobert Watson mac_check_pipe_read(struct ucred *cred, struct pipe *pipe) 2661c024c3eeSRobert Watson { 2662c024c3eeSRobert Watson int error; 2663c024c3eeSRobert Watson 26641aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26651aa37f53SRobert Watson 26661aa37f53SRobert Watson if (!mac_enforce_pipe) 26671aa37f53SRobert Watson return (0); 26681aa37f53SRobert Watson 2669c024c3eeSRobert Watson MAC_CHECK(check_pipe_read, cred, pipe, pipe->pipe_label); 267095fab37eSRobert Watson 267195fab37eSRobert Watson return (error); 267295fab37eSRobert Watson } 267395fab37eSRobert Watson 267495fab37eSRobert Watson static int 267595fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 267695fab37eSRobert Watson struct label *newlabel) 267795fab37eSRobert Watson { 267895fab37eSRobert Watson int error; 267995fab37eSRobert Watson 26801aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26811aa37f53SRobert Watson 26821aa37f53SRobert Watson if (!mac_enforce_pipe) 26831aa37f53SRobert Watson return (0); 26841aa37f53SRobert Watson 268595fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 268695fab37eSRobert Watson 268795fab37eSRobert Watson return (error); 268895fab37eSRobert Watson } 268995fab37eSRobert Watson 269095fab37eSRobert Watson int 2691c024c3eeSRobert Watson mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe) 2692c024c3eeSRobert Watson { 2693c024c3eeSRobert Watson int error; 2694c024c3eeSRobert Watson 26951aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 26961aa37f53SRobert Watson 26971aa37f53SRobert Watson if (!mac_enforce_pipe) 26981aa37f53SRobert Watson return (0); 26991aa37f53SRobert Watson 2700c024c3eeSRobert Watson MAC_CHECK(check_pipe_stat, cred, pipe, pipe->pipe_label); 2701c024c3eeSRobert Watson 2702c024c3eeSRobert Watson return (error); 2703c024c3eeSRobert Watson } 2704c024c3eeSRobert Watson 2705c024c3eeSRobert Watson int 2706c024c3eeSRobert Watson mac_check_pipe_write(struct ucred *cred, struct pipe *pipe) 2707c024c3eeSRobert Watson { 2708c024c3eeSRobert Watson int error; 2709c024c3eeSRobert Watson 27101aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 27111aa37f53SRobert Watson 27121aa37f53SRobert Watson if (!mac_enforce_pipe) 27131aa37f53SRobert Watson return (0); 27141aa37f53SRobert Watson 2715c024c3eeSRobert Watson MAC_CHECK(check_pipe_write, cred, pipe, pipe->pipe_label); 2716c024c3eeSRobert Watson 2717c024c3eeSRobert Watson return (error); 2718c024c3eeSRobert Watson } 2719c024c3eeSRobert Watson 2720c024c3eeSRobert Watson int 272195fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 272295fab37eSRobert Watson { 272395fab37eSRobert Watson int error; 272495fab37eSRobert Watson 2725b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2726b12baf55SRobert Watson 272795fab37eSRobert Watson if (!mac_enforce_process) 272895fab37eSRobert Watson return (0); 272995fab37eSRobert Watson 273095fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 273195fab37eSRobert Watson 273295fab37eSRobert Watson return (error); 273395fab37eSRobert Watson } 273495fab37eSRobert Watson 273595fab37eSRobert Watson int 273695fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 273795fab37eSRobert Watson { 273895fab37eSRobert Watson int error; 273995fab37eSRobert Watson 2740b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2741b12baf55SRobert Watson 274295fab37eSRobert Watson if (!mac_enforce_process) 274395fab37eSRobert Watson return (0); 274495fab37eSRobert Watson 274595fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 274695fab37eSRobert Watson 274795fab37eSRobert Watson return (error); 274895fab37eSRobert Watson } 274995fab37eSRobert Watson 275095fab37eSRobert Watson int 275195fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 275295fab37eSRobert Watson { 275395fab37eSRobert Watson int error; 275495fab37eSRobert Watson 2755b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2756b12baf55SRobert Watson 275795fab37eSRobert Watson if (!mac_enforce_process) 275895fab37eSRobert Watson return (0); 275995fab37eSRobert Watson 276095fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 276195fab37eSRobert Watson 276295fab37eSRobert Watson return (error); 276395fab37eSRobert Watson } 276495fab37eSRobert Watson 276595fab37eSRobert Watson int 276695fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 276795fab37eSRobert Watson struct sockaddr *sockaddr) 276895fab37eSRobert Watson { 276995fab37eSRobert Watson int error; 277095fab37eSRobert Watson 277195fab37eSRobert Watson if (!mac_enforce_socket) 277295fab37eSRobert Watson return (0); 277395fab37eSRobert Watson 277495fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 277595fab37eSRobert Watson sockaddr); 277695fab37eSRobert Watson 277795fab37eSRobert Watson return (error); 277895fab37eSRobert Watson } 277995fab37eSRobert Watson 278095fab37eSRobert Watson int 278195fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 278295fab37eSRobert Watson struct sockaddr *sockaddr) 278395fab37eSRobert Watson { 278495fab37eSRobert Watson int error; 278595fab37eSRobert Watson 278695fab37eSRobert Watson if (!mac_enforce_socket) 278795fab37eSRobert Watson return (0); 278895fab37eSRobert Watson 278995fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 279095fab37eSRobert Watson sockaddr); 279195fab37eSRobert Watson 279295fab37eSRobert Watson return (error); 279395fab37eSRobert Watson } 279495fab37eSRobert Watson 279595fab37eSRobert Watson int 2796d61198e4SRobert Watson mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2797d61198e4SRobert Watson { 2798d61198e4SRobert Watson int error; 2799d61198e4SRobert Watson 2800d61198e4SRobert Watson if (!mac_enforce_socket) 2801d61198e4SRobert Watson return (0); 2802d61198e4SRobert Watson 2803d61198e4SRobert Watson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2804d61198e4SRobert Watson &mbuf->m_pkthdr.label); 2805d61198e4SRobert Watson 2806d61198e4SRobert Watson return (error); 2807d61198e4SRobert Watson } 2808d61198e4SRobert Watson 2809d61198e4SRobert Watson int 281095fab37eSRobert Watson mac_check_socket_listen(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_listen, cred, socket, &socket->so_label); 281895fab37eSRobert Watson return (error); 281995fab37eSRobert Watson } 282095fab37eSRobert Watson 282195fab37eSRobert Watson static int 282295fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 282395fab37eSRobert Watson struct label *newlabel) 282495fab37eSRobert Watson { 282595fab37eSRobert Watson int error; 282695fab37eSRobert Watson 282795fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 282895fab37eSRobert Watson newlabel); 282995fab37eSRobert Watson 283095fab37eSRobert Watson return (error); 283195fab37eSRobert Watson } 283295fab37eSRobert Watson 283395fab37eSRobert Watson int 283495fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 283595fab37eSRobert Watson { 283695fab37eSRobert Watson int error; 283795fab37eSRobert Watson 283895fab37eSRobert Watson if (!mac_enforce_socket) 283995fab37eSRobert Watson return (0); 284095fab37eSRobert Watson 284195fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 284295fab37eSRobert Watson 284395fab37eSRobert Watson return (error); 284495fab37eSRobert Watson } 284595fab37eSRobert Watson 284695fab37eSRobert Watson int 284795fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 284895fab37eSRobert Watson struct ifnet *ifnet) 284995fab37eSRobert Watson { 285095fab37eSRobert Watson struct mac label; 285195fab37eSRobert Watson int error; 285295fab37eSRobert Watson 285395fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 285495fab37eSRobert Watson if (error) 285595fab37eSRobert Watson return (error); 285695fab37eSRobert Watson 285795fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 285895fab37eSRobert Watson } 285995fab37eSRobert Watson 286095fab37eSRobert Watson int 286195fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 286295fab37eSRobert Watson struct ifnet *ifnet) 286395fab37eSRobert Watson { 286495fab37eSRobert Watson struct mac newlabel; 286595fab37eSRobert Watson struct label intlabel; 286695fab37eSRobert Watson int error; 286795fab37eSRobert Watson 286895fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 286995fab37eSRobert Watson if (error) 287095fab37eSRobert Watson return (error); 287195fab37eSRobert Watson 287295fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 287395fab37eSRobert Watson if (error) 287495fab37eSRobert Watson return (error); 287595fab37eSRobert Watson 287695fab37eSRobert Watson /* 287795fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 287895fab37eSRobert Watson * policies impose this check themselves if required by the 287995fab37eSRobert Watson * policy. Eventually, this should go away. 288095fab37eSRobert Watson */ 288195fab37eSRobert Watson error = suser_cred(cred, 0); 288295fab37eSRobert Watson if (error) 288395fab37eSRobert Watson goto out; 288495fab37eSRobert Watson 288595fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 288695fab37eSRobert Watson &intlabel); 288795fab37eSRobert Watson if (error) 288895fab37eSRobert Watson goto out; 288995fab37eSRobert Watson 289095fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 289195fab37eSRobert Watson 289295fab37eSRobert Watson out: 289395fab37eSRobert Watson mac_destroy_temp(&intlabel); 289495fab37eSRobert Watson return (error); 289595fab37eSRobert Watson } 289695fab37eSRobert Watson 289795fab37eSRobert Watson void 289895fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 289995fab37eSRobert Watson { 290095fab37eSRobert Watson 290195fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 290295fab37eSRobert Watson } 290395fab37eSRobert Watson 290495fab37eSRobert Watson void 290595fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 290695fab37eSRobert Watson { 290795fab37eSRobert Watson 290895fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 290995fab37eSRobert Watson } 291095fab37eSRobert Watson 291195fab37eSRobert Watson static int 291295fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 291395fab37eSRobert Watson { 291495fab37eSRobert Watson int error; 291595fab37eSRobert Watson 291695fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 291795fab37eSRobert Watson 291895fab37eSRobert Watson return (error); 291995fab37eSRobert Watson } 292095fab37eSRobert Watson 292195fab37eSRobert Watson void 292295fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 292395fab37eSRobert Watson struct devfs_dirent *de) 292495fab37eSRobert Watson { 292595fab37eSRobert Watson 292695fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 292795fab37eSRobert Watson &de->de_label); 292895fab37eSRobert Watson } 292995fab37eSRobert Watson 293095fab37eSRobert Watson /* 293195fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 293295fab37eSRobert Watson */ 293395fab37eSRobert Watson void 293495fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 293595fab37eSRobert Watson struct vnode *child) 293695fab37eSRobert Watson { 293795fab37eSRobert Watson int error; 293895fab37eSRobert Watson 293995fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 294095fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 294195fab37eSRobert Watson 294295fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 294395fab37eSRobert Watson if (error) { 294495fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 294595fab37eSRobert Watson error); 294695fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 294795fab37eSRobert Watson } 294895fab37eSRobert Watson 294995fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 295095fab37eSRobert Watson &child->v_label); 295195fab37eSRobert Watson } 295295fab37eSRobert Watson 295395fab37eSRobert Watson int 295495fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 295595fab37eSRobert Watson struct mac *extmac) 295695fab37eSRobert Watson { 295795fab37eSRobert Watson struct label intlabel; 295895fab37eSRobert Watson int error; 295995fab37eSRobert Watson 296095fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 296195fab37eSRobert Watson if (error) 296295fab37eSRobert Watson return (error); 296395fab37eSRobert Watson 296495fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 296595fab37eSRobert Watson if (error) { 296695fab37eSRobert Watson mac_destroy_temp(&intlabel); 296795fab37eSRobert Watson return (error); 296895fab37eSRobert Watson } 296995fab37eSRobert Watson 297095fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 297195fab37eSRobert Watson 297295fab37eSRobert Watson mac_destroy_temp(&intlabel); 297395fab37eSRobert Watson return (0); 297495fab37eSRobert Watson } 297595fab37eSRobert Watson 297695fab37eSRobert Watson int 297795fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 297895fab37eSRobert Watson { 297995fab37eSRobert Watson int error; 298095fab37eSRobert Watson 29811aa37f53SRobert Watson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 29821aa37f53SRobert Watson 298395fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 298495fab37eSRobert Watson if (error) 298595fab37eSRobert Watson return (error); 298695fab37eSRobert Watson 298795fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 298895fab37eSRobert Watson 298995fab37eSRobert Watson return (0); 299095fab37eSRobert Watson } 299195fab37eSRobert Watson 299295fab37eSRobert Watson int 299395fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 299495fab37eSRobert Watson struct mac *extmac) 299595fab37eSRobert Watson { 299695fab37eSRobert Watson 299795fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 299895fab37eSRobert Watson } 299995fab37eSRobert Watson 300095fab37eSRobert Watson int 300195fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 300295fab37eSRobert Watson struct mac *extmac) 300395fab37eSRobert Watson { 300495fab37eSRobert Watson 300595fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 300695fab37eSRobert Watson } 300795fab37eSRobert Watson 300895fab37eSRobert Watson /* 300995fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 301095fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 301195fab37eSRobert Watson * extended attributes. 301295fab37eSRobert Watson */ 301395fab37eSRobert Watson int 301495fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 301595fab37eSRobert Watson { 301695fab37eSRobert Watson struct vnode *vp = ap->a_vp; 301795fab37eSRobert Watson struct label *intlabel = ap->a_label; 301895fab37eSRobert Watson struct mac extmac; 301995fab37eSRobert Watson int error; 302095fab37eSRobert Watson 302195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 302295fab37eSRobert Watson 302395fab37eSRobert Watson /* 302495fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 302595fab37eSRobert Watson * Be particularly careful to avoid race conditions, 302695fab37eSRobert Watson * consistency problems, and stability problems when 302795fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 302895fab37eSRobert Watson * the ability to write multiple EAs on the same file in 302995fab37eSRobert Watson * a single transaction, which the current EA interface 303095fab37eSRobert Watson * does not provide. 303195fab37eSRobert Watson */ 303295fab37eSRobert Watson 303395fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 303495fab37eSRobert Watson if (error) 303595fab37eSRobert Watson return (error); 303695fab37eSRobert Watson 303795fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 303895fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 303995fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 304095fab37eSRobert Watson if (error) 304195fab37eSRobert Watson return (error); 304295fab37eSRobert Watson 304395fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 304495fab37eSRobert Watson 3045e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 304695fab37eSRobert Watson 304795fab37eSRobert Watson return (0); 304895fab37eSRobert Watson } 304995fab37eSRobert Watson 305095fab37eSRobert Watson static int 305195fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 305295fab37eSRobert Watson { 305395fab37eSRobert Watson int error; 305495fab37eSRobert Watson 305595fab37eSRobert Watson if (vp->v_mount == NULL) { 305695fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 305706be2aaaSNate Lawson if (vp->v_type != VNON) 305806be2aaaSNate Lawson printf("vn_setlabel: null v_mount with non-VNON\n"); 305995fab37eSRobert Watson return (EBADF); 306095fab37eSRobert Watson } 306195fab37eSRobert Watson 306295fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 306395fab37eSRobert Watson return (EOPNOTSUPP); 306495fab37eSRobert Watson 306595fab37eSRobert Watson /* 306695fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 306795fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 306895fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 306995fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 307095fab37eSRobert Watson */ 307195fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 307295fab37eSRobert Watson if (error) 307395fab37eSRobert Watson return (error); 307495fab37eSRobert Watson 307595fab37eSRobert Watson /* 307695fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 307795fab37eSRobert Watson * decisions about who is and is not able to modify labels 307895fab37eSRobert Watson * and protections on files. This might not be right. We can't 307995fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 308095fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 308195fab37eSRobert Watson */ 308295fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 308395fab37eSRobert Watson if (error) 308495fab37eSRobert Watson return (error); 308595fab37eSRobert Watson 308695fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 308795fab37eSRobert Watson if (error) 308895fab37eSRobert Watson return (error); 308995fab37eSRobert Watson 309095fab37eSRobert Watson return (0); 309195fab37eSRobert Watson } 309295fab37eSRobert Watson 309395fab37eSRobert Watson /* 309495fab37eSRobert Watson * MPSAFE 309595fab37eSRobert Watson */ 309695fab37eSRobert Watson int 309795fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 309895fab37eSRobert Watson { 309995fab37eSRobert Watson struct mac extmac; 310095fab37eSRobert Watson int error; 310195fab37eSRobert Watson 310295fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 310395fab37eSRobert Watson if (error == 0) 310495fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 310595fab37eSRobert Watson 310695fab37eSRobert Watson return (error); 310795fab37eSRobert Watson } 310895fab37eSRobert Watson 310995fab37eSRobert Watson /* 311095fab37eSRobert Watson * MPSAFE 311195fab37eSRobert Watson */ 311295fab37eSRobert Watson int 311395fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 311495fab37eSRobert Watson { 311595fab37eSRobert Watson struct ucred *newcred, *oldcred; 311695fab37eSRobert Watson struct proc *p; 311795fab37eSRobert Watson struct mac extmac; 311895fab37eSRobert Watson struct label intlabel; 311995fab37eSRobert Watson int error; 312095fab37eSRobert Watson 312195fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 312295fab37eSRobert Watson if (error) 312395fab37eSRobert Watson return (error); 312495fab37eSRobert Watson 312595fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 312695fab37eSRobert Watson if (error) 312795fab37eSRobert Watson return (error); 312895fab37eSRobert Watson 312995fab37eSRobert Watson newcred = crget(); 313095fab37eSRobert Watson 313195fab37eSRobert Watson p = td->td_proc; 313295fab37eSRobert Watson PROC_LOCK(p); 313395fab37eSRobert Watson oldcred = p->p_ucred; 313495fab37eSRobert Watson 313595fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 313695fab37eSRobert Watson if (error) { 313795fab37eSRobert Watson PROC_UNLOCK(p); 313895fab37eSRobert Watson mac_destroy_temp(&intlabel); 313995fab37eSRobert Watson crfree(newcred); 314095fab37eSRobert Watson return (error); 314195fab37eSRobert Watson } 314295fab37eSRobert Watson 314395fab37eSRobert Watson setsugid(p); 314495fab37eSRobert Watson crcopy(newcred, oldcred); 314595fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 314695fab37eSRobert Watson p->p_ucred = newcred; 3147e5cb5e37SRobert Watson 3148e5cb5e37SRobert Watson /* 3149e5cb5e37SRobert Watson * Grab additional reference for use while revoking mmaps, prior 3150e5cb5e37SRobert Watson * to releasing the proc lock and sharing the cred. 3151e5cb5e37SRobert Watson */ 3152e5cb5e37SRobert Watson crhold(newcred); 315395fab37eSRobert Watson PROC_UNLOCK(p); 3154e5cb5e37SRobert Watson 315516140035SRobert Watson mtx_lock(&Giant); 3156e5cb5e37SRobert Watson mac_cred_mmapped_drop_perms(td, newcred); 315716140035SRobert Watson mtx_unlock(&Giant); 3158e5cb5e37SRobert Watson 3159e5cb5e37SRobert Watson crfree(newcred); /* Free revocation reference. */ 316095fab37eSRobert Watson crfree(oldcred); 316195fab37eSRobert Watson mac_destroy_temp(&intlabel); 316295fab37eSRobert Watson return (0); 316395fab37eSRobert Watson } 316495fab37eSRobert Watson 316595fab37eSRobert Watson /* 316695fab37eSRobert Watson * MPSAFE 316795fab37eSRobert Watson */ 316895fab37eSRobert Watson int 316995fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 317095fab37eSRobert Watson { 317195fab37eSRobert Watson struct file *fp; 317295fab37eSRobert Watson struct mac extmac; 317395fab37eSRobert Watson struct vnode *vp; 317495fab37eSRobert Watson struct pipe *pipe; 317595fab37eSRobert Watson int error; 317695fab37eSRobert Watson 317795fab37eSRobert Watson mtx_lock(&Giant); 317895fab37eSRobert Watson 317995fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 318095fab37eSRobert Watson if (error) 318195fab37eSRobert Watson goto out; 318295fab37eSRobert Watson 318395fab37eSRobert Watson switch (fp->f_type) { 318495fab37eSRobert Watson case DTYPE_FIFO: 318595fab37eSRobert Watson case DTYPE_VNODE: 318695fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 318795fab37eSRobert Watson 318895fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 318995fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 319095fab37eSRobert Watson if (error == 0) 319195fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 319295fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 319395fab37eSRobert Watson break; 319495fab37eSRobert Watson case DTYPE_PIPE: 319595fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 319695fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 319795fab37eSRobert Watson break; 319895fab37eSRobert Watson default: 319995fab37eSRobert Watson error = EINVAL; 320095fab37eSRobert Watson } 320195fab37eSRobert Watson 320295fab37eSRobert Watson if (error == 0) 320395fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 320495fab37eSRobert Watson 320595fab37eSRobert Watson fdrop(fp, td); 320695fab37eSRobert Watson 320795fab37eSRobert Watson out: 320895fab37eSRobert Watson mtx_unlock(&Giant); 320995fab37eSRobert Watson return (error); 321095fab37eSRobert Watson } 321195fab37eSRobert Watson 321295fab37eSRobert Watson /* 321395fab37eSRobert Watson * MPSAFE 321495fab37eSRobert Watson */ 321595fab37eSRobert Watson int 321695fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 321795fab37eSRobert Watson { 321895fab37eSRobert Watson struct nameidata nd; 321995fab37eSRobert Watson struct mac extmac; 322095fab37eSRobert Watson int error; 322195fab37eSRobert Watson 322295fab37eSRobert Watson mtx_lock(&Giant); 322395fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 322495fab37eSRobert Watson SCARG(uap, path_p), td); 322595fab37eSRobert Watson error = namei(&nd); 322695fab37eSRobert Watson if (error) 322795fab37eSRobert Watson goto out; 322895fab37eSRobert Watson 322995fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 323095fab37eSRobert Watson if (error == 0) 323195fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 323295fab37eSRobert Watson NDFREE(&nd, 0); 323395fab37eSRobert Watson if (error) 323495fab37eSRobert Watson goto out; 323595fab37eSRobert Watson 323695fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 323795fab37eSRobert Watson 323895fab37eSRobert Watson out: 323995fab37eSRobert Watson mtx_unlock(&Giant); 324095fab37eSRobert Watson return (error); 324195fab37eSRobert Watson } 324295fab37eSRobert Watson 324395fab37eSRobert Watson /* 324495fab37eSRobert Watson * MPSAFE 324595fab37eSRobert Watson */ 324695fab37eSRobert Watson int 324795fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 324895fab37eSRobert Watson { 324995fab37eSRobert Watson struct file *fp; 325095fab37eSRobert Watson struct mac extmac; 325195fab37eSRobert Watson struct label intlabel; 325295fab37eSRobert Watson struct mount *mp; 325395fab37eSRobert Watson struct vnode *vp; 325495fab37eSRobert Watson struct pipe *pipe; 325595fab37eSRobert Watson int error; 325695fab37eSRobert Watson 325795fab37eSRobert Watson mtx_lock(&Giant); 325895fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 325995fab37eSRobert Watson if (error) 326095fab37eSRobert Watson goto out1; 326195fab37eSRobert Watson 326295fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 326395fab37eSRobert Watson if (error) 326495fab37eSRobert Watson goto out2; 326595fab37eSRobert Watson 326695fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 326795fab37eSRobert Watson if (error) 326895fab37eSRobert Watson goto out2; 326995fab37eSRobert Watson 327095fab37eSRobert Watson switch (fp->f_type) { 327195fab37eSRobert Watson case DTYPE_FIFO: 327295fab37eSRobert Watson case DTYPE_VNODE: 327395fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 327495fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 327595fab37eSRobert Watson if (error != 0) 327695fab37eSRobert Watson break; 327795fab37eSRobert Watson 327895fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 327995fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 328095fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 328195fab37eSRobert Watson vn_finished_write(mp); 328295fab37eSRobert Watson mac_destroy_temp(&intlabel); 328395fab37eSRobert Watson break; 328495fab37eSRobert Watson case DTYPE_PIPE: 328595fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 32861aa37f53SRobert Watson PIPE_LOCK(pipe); 328795fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 32881aa37f53SRobert Watson PIPE_UNLOCK(pipe); 328995fab37eSRobert Watson break; 329095fab37eSRobert Watson default: 329195fab37eSRobert Watson error = EINVAL; 329295fab37eSRobert Watson } 329395fab37eSRobert Watson 329495fab37eSRobert Watson out2: 329595fab37eSRobert Watson fdrop(fp, td); 329695fab37eSRobert Watson out1: 329795fab37eSRobert Watson mtx_unlock(&Giant); 329895fab37eSRobert Watson return (error); 329995fab37eSRobert Watson } 330095fab37eSRobert Watson 330195fab37eSRobert Watson /* 330295fab37eSRobert Watson * MPSAFE 330395fab37eSRobert Watson */ 330495fab37eSRobert Watson int 330595fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 330695fab37eSRobert Watson { 330795fab37eSRobert Watson struct nameidata nd; 330895fab37eSRobert Watson struct mac extmac; 330995fab37eSRobert Watson struct label intlabel; 331095fab37eSRobert Watson struct mount *mp; 331195fab37eSRobert Watson int error; 331295fab37eSRobert Watson 331395fab37eSRobert Watson mtx_lock(&Giant); 331495fab37eSRobert Watson 331595fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 331695fab37eSRobert Watson if (error) 331795fab37eSRobert Watson goto out; 331895fab37eSRobert Watson 331995fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 332095fab37eSRobert Watson if (error) 332195fab37eSRobert Watson goto out; 332295fab37eSRobert Watson 332395fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 332495fab37eSRobert Watson SCARG(uap, path_p), td); 332595fab37eSRobert Watson error = namei(&nd); 332695fab37eSRobert Watson if (error) 332795fab37eSRobert Watson goto out2; 332895fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 332995fab37eSRobert Watson if (error) 333095fab37eSRobert Watson goto out2; 333195fab37eSRobert Watson 333295fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 333395fab37eSRobert Watson 333495fab37eSRobert Watson vn_finished_write(mp); 333595fab37eSRobert Watson out2: 333695fab37eSRobert Watson mac_destroy_temp(&intlabel); 333795fab37eSRobert Watson NDFREE(&nd, 0); 333895fab37eSRobert Watson out: 333995fab37eSRobert Watson mtx_unlock(&Giant); 334095fab37eSRobert Watson return (error); 334195fab37eSRobert Watson } 334295fab37eSRobert Watson 334327f2eac7SRobert Watson int 334427f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 334527f2eac7SRobert Watson { 334627f2eac7SRobert Watson struct mac_policy_conf *mpc; 334727f2eac7SRobert Watson char target[MAC_MAX_POLICY_NAME]; 334827f2eac7SRobert Watson int error; 334927f2eac7SRobert Watson 335027f2eac7SRobert Watson error = copyinstr(SCARG(uap, policy), target, sizeof(target), NULL); 335127f2eac7SRobert Watson if (error) 335227f2eac7SRobert Watson return (error); 335327f2eac7SRobert Watson 335427f2eac7SRobert Watson error = ENOSYS; 335527f2eac7SRobert Watson MAC_POLICY_LIST_BUSY(); 335627f2eac7SRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { 335727f2eac7SRobert Watson if (strcmp(mpc->mpc_name, target) == 0 && 335827f2eac7SRobert Watson mpc->mpc_ops->mpo_syscall != NULL) { 335927f2eac7SRobert Watson error = mpc->mpc_ops->mpo_syscall(td, 336027f2eac7SRobert Watson SCARG(uap, call), SCARG(uap, arg)); 336127f2eac7SRobert Watson goto out; 336227f2eac7SRobert Watson } 336327f2eac7SRobert Watson } 336427f2eac7SRobert Watson 336527f2eac7SRobert Watson out: 336627f2eac7SRobert Watson MAC_POLICY_LIST_UNBUSY(); 336727f2eac7SRobert Watson return (error); 336827f2eac7SRobert Watson } 336927f2eac7SRobert Watson 337095fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 337195fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 337295fab37eSRobert Watson 337395fab37eSRobert Watson #else /* !MAC */ 33747bc82500SRobert Watson 33757bc82500SRobert Watson int 33767bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 33777bc82500SRobert Watson { 33787bc82500SRobert Watson 33797bc82500SRobert Watson return (ENOSYS); 33807bc82500SRobert Watson } 33817bc82500SRobert Watson 33827bc82500SRobert Watson int 33837bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 33847bc82500SRobert Watson { 33857bc82500SRobert Watson 33867bc82500SRobert Watson return (ENOSYS); 33877bc82500SRobert Watson } 33887bc82500SRobert Watson 33897bc82500SRobert Watson int 33907bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 33917bc82500SRobert Watson { 33927bc82500SRobert Watson 33937bc82500SRobert Watson return (ENOSYS); 33947bc82500SRobert Watson } 33957bc82500SRobert Watson 33967bc82500SRobert Watson int 33977bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 33987bc82500SRobert Watson { 33997bc82500SRobert Watson 34007bc82500SRobert Watson return (ENOSYS); 34017bc82500SRobert Watson } 34027bc82500SRobert Watson 34037bc82500SRobert Watson int 34047bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 34057bc82500SRobert Watson { 34067bc82500SRobert Watson 34077bc82500SRobert Watson return (ENOSYS); 34087bc82500SRobert Watson } 34097bc82500SRobert Watson 34107bc82500SRobert Watson int 34117bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 34127bc82500SRobert Watson { 34137bc82500SRobert Watson 34147bc82500SRobert Watson return (ENOSYS); 34157bc82500SRobert Watson } 341695fab37eSRobert Watson 341727f2eac7SRobert Watson int 341827f2eac7SRobert Watson mac_syscall(struct thread *td, struct mac_syscall_args *uap) 341927f2eac7SRobert Watson { 342027f2eac7SRobert Watson 342127f2eac7SRobert Watson return (ENOSYS); 342227f2eac7SRobert Watson } 342327f2eac7SRobert Watson 342495fab37eSRobert Watson #endif /* !MAC */ 3425