mac_cred.c revision 104541
1100894Srwatson/*- 2100894Srwatson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 3100894Srwatson * Copyright (c) 2001 Ilmar S. Habibulin 4100894Srwatson * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 5100894Srwatson * All rights reserved. 6100894Srwatson * 7100894Srwatson * This software was developed by Robert Watson and Ilmar Habibulin for the 8100894Srwatson * TrustedBSD Project. 9100894Srwatson * 10100894Srwatson * This software was developed for the FreeBSD Project in part by NAI Labs, 11100894Srwatson * the Security Research Division of Network Associates, Inc. under 12100894Srwatson * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 13100894Srwatson * CHATS research program. 14100894Srwatson * 15100894Srwatson * Redistribution and use in source and binary forms, with or without 16100894Srwatson * modification, are permitted provided that the following conditions 17100894Srwatson * are met: 18100894Srwatson * 1. Redistributions of source code must retain the above copyright 19100894Srwatson * notice, this list of conditions and the following disclaimer. 20100894Srwatson * 2. Redistributions in binary form must reproduce the above copyright 21100894Srwatson * notice, this list of conditions and the following disclaimer in the 22100894Srwatson * documentation and/or other materials provided with the distribution. 23100894Srwatson * 3. The names of the authors may not be used to endorse or promote 24100894Srwatson * products derived from this software without specific prior written 25100894Srwatson * permission. 26100894Srwatson * 27100894Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 28100894Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29100894Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30100894Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 31100894Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32100894Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33100894Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34100894Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35100894Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36100894Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37100894Srwatson * SUCH DAMAGE. 38100894Srwatson * 39100894Srwatson * $FreeBSD: head/sys/security/mac/mac_process.c 104541 2002-10-05 21:23:47Z rwatson $ 40100894Srwatson */ 41100894Srwatson/* 42100894Srwatson * Developed by the TrustedBSD Project. 43100894Srwatson * 44100894Srwatson * Framework for extensible kernel access control. Kernel and userland 45100894Srwatson * interface to the framework, policy registration and composition. 46100894Srwatson */ 47100894Srwatson 48100894Srwatson#include "opt_mac.h" 49104300Sphk#include "opt_devfs.h" 50101173Srwatson 51100894Srwatson#include <sys/param.h> 52100979Srwatson#include <sys/extattr.h> 53100979Srwatson#include <sys/kernel.h> 54100979Srwatson#include <sys/lock.h> 55102949Sbde#include <sys/malloc.h> 56100979Srwatson#include <sys/mutex.h> 57100979Srwatson#include <sys/mac.h> 58101712Srwatson#include <sys/module.h> 59100979Srwatson#include <sys/proc.h> 60100979Srwatson#include <sys/systm.h> 61100894Srwatson#include <sys/sysproto.h> 62100894Srwatson#include <sys/sysent.h> 63100979Srwatson#include <sys/vnode.h> 64100979Srwatson#include <sys/mount.h> 65100979Srwatson#include <sys/file.h> 66100979Srwatson#include <sys/namei.h> 67100979Srwatson#include <sys/socket.h> 68100979Srwatson#include <sys/pipe.h> 69100979Srwatson#include <sys/socketvar.h> 70100979Srwatson#include <sys/sysctl.h> 71100894Srwatson 72100979Srwatson#include <vm/vm.h> 73100979Srwatson#include <vm/pmap.h> 74100979Srwatson#include <vm/vm_map.h> 75100979Srwatson#include <vm/vm_object.h> 76100979Srwatson 77100979Srwatson#include <sys/mac_policy.h> 78100979Srwatson 79100979Srwatson#include <fs/devfs/devfs.h> 80100979Srwatson 81100979Srwatson#include <net/bpfdesc.h> 82100979Srwatson#include <net/if.h> 83100979Srwatson#include <net/if_var.h> 84100979Srwatson 85100979Srwatson#include <netinet/in.h> 86100979Srwatson#include <netinet/ip_var.h> 87100979Srwatson 88100979Srwatson#ifdef MAC 89100979Srwatson 90101712Srwatson/* 91101712Srwatson * Declare that the kernel provides MAC support, version 1. This permits 92101712Srwatson * modules to refuse to be loaded if the necessary support isn't present, 93101712Srwatson * even if it's pre-boot. 94101712Srwatson */ 95101712SrwatsonMODULE_VERSION(kernel_mac_support, 1); 96101712Srwatson 97100979SrwatsonSYSCTL_DECL(_security); 98100979Srwatson 99100979SrwatsonSYSCTL_NODE(_security, OID_AUTO, mac, CTLFLAG_RW, 0, 100100979Srwatson "TrustedBSD MAC policy controls"); 101104517Srwatson 102100979Srwatson#ifndef MAC_MAX_POLICIES 103100979Srwatson#define MAC_MAX_POLICIES 8 104100979Srwatson#endif 105100979Srwatson#if MAC_MAX_POLICIES > 32 106100979Srwatson#error "MAC_MAX_POLICIES too large" 107100979Srwatson#endif 108100979Srwatsonstatic unsigned int mac_max_policies = MAC_MAX_POLICIES; 109100979Srwatsonstatic unsigned int mac_policy_offsets_free = (1 << MAC_MAX_POLICIES) - 1; 110100979SrwatsonSYSCTL_UINT(_security_mac, OID_AUTO, max_policies, CTLFLAG_RD, 111100979Srwatson &mac_max_policies, 0, ""); 112100979Srwatson 113100979Srwatsonstatic int mac_late = 0; 114100979Srwatson 115100979Srwatsonstatic int mac_enforce_fs = 1; 116100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_fs, CTLFLAG_RW, 117100979Srwatson &mac_enforce_fs, 0, "Enforce MAC policy on file system objects"); 118100979SrwatsonTUNABLE_INT("security.mac.enforce_fs", &mac_enforce_fs); 119100979Srwatson 120100979Srwatsonstatic int mac_enforce_network = 1; 121100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW, 122100979Srwatson &mac_enforce_network, 0, "Enforce MAC policy on network packets"); 123100979SrwatsonTUNABLE_INT("security.mac.enforce_network", &mac_enforce_network); 124100979Srwatson 125103513Srwatsonstatic int mac_enforce_pipe = 1; 126103513SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_pipe, CTLFLAG_RW, 127103513Srwatson &mac_enforce_pipe, 0, "Enforce MAC policy on pipe operations"); 128104236SrwatsonTUNABLE_INT("security.mac.enforce_pipe", &mac_enforce_pipe); 129103513Srwatson 130100979Srwatsonstatic int mac_enforce_process = 1; 131100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_process, CTLFLAG_RW, 132100979Srwatson &mac_enforce_process, 0, "Enforce MAC policy on inter-process operations"); 133100979SrwatsonTUNABLE_INT("security.mac.enforce_process", &mac_enforce_process); 134100979Srwatson 135100979Srwatsonstatic int mac_enforce_socket = 1; 136100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW, 137100979Srwatson &mac_enforce_socket, 0, "Enforce MAC policy on socket operations"); 138100979SrwatsonTUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket); 139100979Srwatson 140103514Srwatsonstatic int mac_enforce_vm = 1; 141103514SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_vm, CTLFLAG_RW, 142103514Srwatson &mac_enforce_vm, 0, "Enforce MAC policy on vm operations"); 143104236SrwatsonTUNABLE_INT("security.mac.enforce_vm", &mac_enforce_vm); 144103514Srwatson 145100979Srwatsonstatic int mac_label_size = sizeof(struct mac); 146100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, label_size, CTLFLAG_RD, 147100979Srwatson &mac_label_size, 0, "Pre-compiled MAC label size"); 148100979Srwatson 149100979Srwatsonstatic int mac_cache_fslabel_in_vnode = 1; 150100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, cache_fslabel_in_vnode, CTLFLAG_RW, 151100979Srwatson &mac_cache_fslabel_in_vnode, 0, "Cache mount fslabel in vnode"); 152100979SrwatsonTUNABLE_INT("security.mac.cache_fslabel_in_vnode", 153100979Srwatson &mac_cache_fslabel_in_vnode); 154100979Srwatson 155100979Srwatsonstatic int mac_vnode_label_cache_hits = 0; 156100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_hits, CTLFLAG_RD, 157100979Srwatson &mac_vnode_label_cache_hits, 0, "Cache hits on vnode labels"); 158100979Srwatsonstatic int mac_vnode_label_cache_misses = 0; 159100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD, 160100979Srwatson &mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels"); 161103136Srwatson 162103136Srwatsonstatic int mac_mmap_revocation = 1; 163103136SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation, CTLFLAG_RW, 164103136Srwatson &mac_mmap_revocation, 0, "Revoke mmap access to files on subject " 165103136Srwatson "relabel"); 166101892Srwatsonstatic int mac_mmap_revocation_via_cow = 0; 167100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW, 168100979Srwatson &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via " 169100979Srwatson "copy-on-write semantics, or by removing all write access"); 170100979Srwatson 171101988Srwatson#ifdef MAC_DEBUG 172104268SrwatsonSYSCTL_NODE(_security_mac, OID_AUTO, debug, CTLFLAG_RW, 0, 173104268Srwatson "TrustedBSD MAC debug info"); 174104268Srwatson 175104268Srwatsonstatic int mac_debug_label_fallback = 0; 176104268SrwatsonSYSCTL_INT(_security_mac_debug, OID_AUTO, label_fallback, CTLFLAG_RW, 177104268Srwatson &mac_debug_label_fallback, 0, "Filesystems should fall back to fs label" 178104268Srwatson "when label is corrupted."); 179104268SrwatsonTUNABLE_INT("security.mac.debug_label_fallback", 180104268Srwatson &mac_debug_label_fallback); 181104268Srwatson 182104517SrwatsonSYSCTL_NODE(_security_mac_debug, OID_AUTO, counters, CTLFLAG_RW, 0, 183104517Srwatson "TrustedBSD MAC object counters"); 184104517Srwatson 185100979Srwatsonstatic unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs, 186100979Srwatson nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents, 187100979Srwatson nmacipqs, nmacpipes; 188104517Srwatson 189104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD, 190100979Srwatson &nmacmbufs, 0, "number of mbufs in use"); 191104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, creds, CTLFLAG_RD, 192100979Srwatson &nmaccreds, 0, "number of ucreds in use"); 193104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD, 194100979Srwatson &nmacifnets, 0, "number of ifnets in use"); 195104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD, 196100979Srwatson &nmacipqs, 0, "number of ipqs in use"); 197104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, bpfdescs, CTLFLAG_RD, 198100979Srwatson &nmacbpfdescs, 0, "number of bpfdescs in use"); 199104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, sockets, CTLFLAG_RD, 200100979Srwatson &nmacsockets, 0, "number of sockets in use"); 201104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, pipes, CTLFLAG_RD, 202100979Srwatson &nmacpipes, 0, "number of pipes in use"); 203104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mounts, CTLFLAG_RD, 204100979Srwatson &nmacmounts, 0, "number of mounts in use"); 205104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, temp, CTLFLAG_RD, 206100979Srwatson &nmactemp, 0, "number of temporary labels in use"); 207104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, vnodes, CTLFLAG_RD, 208100979Srwatson &nmacvnodes, 0, "number of vnodes in use"); 209104517SrwatsonSYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, devfsdirents, CTLFLAG_RD, 210100979Srwatson &nmacdevfsdirents, 0, "number of devfs dirents inuse"); 211101988Srwatson#endif 212100979Srwatson 213100979Srwatsonstatic int error_select(int error1, int error2); 214100979Srwatsonstatic int mac_externalize(struct label *label, struct mac *mac); 215100979Srwatsonstatic int mac_policy_register(struct mac_policy_conf *mpc); 216100979Srwatsonstatic int mac_policy_unregister(struct mac_policy_conf *mpc); 217100979Srwatson 218100979Srwatsonstatic int mac_stdcreatevnode_ea(struct vnode *vp); 219100979Srwatsonstatic void mac_cred_mmapped_drop_perms(struct thread *td, 220100979Srwatson struct ucred *cred); 221100979Srwatsonstatic void mac_cred_mmapped_drop_perms_recurse(struct thread *td, 222100979Srwatson struct ucred *cred, struct vm_map *map); 223100979Srwatson 224104541Srwatsonstatic void mac_destroy_socket_label(struct label *label); 225104541Srwatson 226100979SrwatsonMALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 227100979SrwatsonMALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 228100979Srwatson 229100979Srwatson/* 230100979Srwatson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 231100979Srwatson * the linked list of attached policy modules. Read-only consumers of 232100979Srwatson * the list must acquire a shared lock for the duration of their use; 233100979Srwatson * writers must acquire an exclusive lock. Note that for compound 234100979Srwatson * operations, locks should be held for the entire compound operation, 235100979Srwatson * and that this is not yet done for relabel requests. 236100979Srwatson */ 237100979Srwatsonstatic struct mtx mac_policy_list_lock; 238100979Srwatsonstatic LIST_HEAD(, mac_policy_conf) mac_policy_list; 239100979Srwatsonstatic int mac_policy_list_busy; 240100979Srwatson#define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 241100979Srwatson "mac_policy_list_lock", NULL, MTX_DEF); 242100979Srwatson#define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 243100979Srwatson#define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 244100979Srwatson 245100979Srwatson#define MAC_POLICY_LIST_BUSY() do { \ 246100979Srwatson MAC_POLICY_LIST_LOCK(); \ 247100979Srwatson mac_policy_list_busy++; \ 248100979Srwatson MAC_POLICY_LIST_UNLOCK(); \ 249100979Srwatson} while (0) 250100979Srwatson 251100979Srwatson#define MAC_POLICY_LIST_UNBUSY() do { \ 252100979Srwatson MAC_POLICY_LIST_LOCK(); \ 253100979Srwatson mac_policy_list_busy--; \ 254100979Srwatson if (mac_policy_list_busy < 0) \ 255100979Srwatson panic("Extra mac_policy_list_busy--"); \ 256100979Srwatson MAC_POLICY_LIST_UNLOCK(); \ 257100979Srwatson} while (0) 258100979Srwatson 259100979Srwatson/* 260100979Srwatson * MAC_CHECK performs the designated check by walking the policy 261100979Srwatson * module list and checking with each as to how it feels about the 262100979Srwatson * request. Note that it returns its value via 'error' in the scope 263100979Srwatson * of the caller. 264100979Srwatson */ 265100979Srwatson#define MAC_CHECK(check, args...) do { \ 266100979Srwatson struct mac_policy_conf *mpc; \ 267100979Srwatson \ 268100979Srwatson error = 0; \ 269100979Srwatson MAC_POLICY_LIST_BUSY(); \ 270100979Srwatson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 271100979Srwatson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 272100979Srwatson error = error_select( \ 273100979Srwatson mpc->mpc_ops->mpo_ ## check (args), \ 274100979Srwatson error); \ 275100979Srwatson } \ 276100979Srwatson MAC_POLICY_LIST_UNBUSY(); \ 277100979Srwatson} while (0) 278100979Srwatson 279100979Srwatson/* 280100979Srwatson * MAC_BOOLEAN performs the designated boolean composition by walking 281100979Srwatson * the module list, invoking each instance of the operation, and 282100979Srwatson * combining the results using the passed C operator. Note that it 283100979Srwatson * returns its value via 'result' in the scope of the caller, which 284100979Srwatson * should be initialized by the caller in a meaningful way to get 285100979Srwatson * a meaningful result. 286100979Srwatson */ 287100979Srwatson#define MAC_BOOLEAN(operation, composition, args...) do { \ 288100979Srwatson struct mac_policy_conf *mpc; \ 289100979Srwatson \ 290100979Srwatson MAC_POLICY_LIST_BUSY(); \ 291100979Srwatson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 292100979Srwatson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 293100979Srwatson result = result composition \ 294100979Srwatson mpc->mpc_ops->mpo_ ## operation (args); \ 295100979Srwatson } \ 296100979Srwatson MAC_POLICY_LIST_UNBUSY(); \ 297100979Srwatson} while (0) 298100979Srwatson 299100979Srwatson/* 300100979Srwatson * MAC_PERFORM performs the designated operation by walking the policy 301100979Srwatson * module list and invoking that operation for each policy. 302100979Srwatson */ 303100979Srwatson#define MAC_PERFORM(operation, args...) do { \ 304100979Srwatson struct mac_policy_conf *mpc; \ 305100979Srwatson \ 306100979Srwatson MAC_POLICY_LIST_BUSY(); \ 307100979Srwatson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 308100979Srwatson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 309100979Srwatson mpc->mpc_ops->mpo_ ## operation (args); \ 310100979Srwatson } \ 311100979Srwatson MAC_POLICY_LIST_UNBUSY(); \ 312100979Srwatson} while (0) 313100979Srwatson 314100979Srwatson/* 315100979Srwatson * Initialize the MAC subsystem, including appropriate SMP locks. 316100979Srwatson */ 317100979Srwatsonstatic void 318100979Srwatsonmac_init(void) 319100979Srwatson{ 320100979Srwatson 321100979Srwatson LIST_INIT(&mac_policy_list); 322100979Srwatson MAC_POLICY_LIST_LOCKINIT(); 323100979Srwatson} 324100979Srwatson 325100979Srwatson/* 326100979Srwatson * For the purposes of modules that want to know if they were loaded 327100979Srwatson * "early", set the mac_late flag once we've processed modules either 328100979Srwatson * linked into the kernel, or loaded before the kernel startup. 329100979Srwatson */ 330100979Srwatsonstatic void 331100979Srwatsonmac_late_init(void) 332100979Srwatson{ 333100979Srwatson 334100979Srwatson mac_late = 1; 335100979Srwatson} 336100979Srwatson 337100979Srwatson/* 338100979Srwatson * Allow MAC policy modules to register during boot, etc. 339100979Srwatson */ 340100894Srwatsonint 341100979Srwatsonmac_policy_modevent(module_t mod, int type, void *data) 342100979Srwatson{ 343100979Srwatson struct mac_policy_conf *mpc; 344100979Srwatson int error; 345100979Srwatson 346100979Srwatson error = 0; 347100979Srwatson mpc = (struct mac_policy_conf *) data; 348100979Srwatson 349100979Srwatson switch (type) { 350100979Srwatson case MOD_LOAD: 351100979Srwatson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 352100979Srwatson mac_late) { 353100979Srwatson printf("mac_policy_modevent: can't load %s policy " 354100979Srwatson "after booting\n", mpc->mpc_name); 355100979Srwatson error = EBUSY; 356100979Srwatson break; 357100979Srwatson } 358100979Srwatson error = mac_policy_register(mpc); 359100979Srwatson break; 360100979Srwatson case MOD_UNLOAD: 361100979Srwatson /* Don't unregister the module if it was never registered. */ 362100979Srwatson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 363100979Srwatson != 0) 364100979Srwatson error = mac_policy_unregister(mpc); 365100979Srwatson else 366100979Srwatson error = 0; 367100979Srwatson break; 368100979Srwatson default: 369100979Srwatson break; 370100979Srwatson } 371100979Srwatson 372100979Srwatson return (error); 373100979Srwatson} 374100979Srwatson 375100979Srwatsonstatic int 376100979Srwatsonmac_policy_register(struct mac_policy_conf *mpc) 377100979Srwatson{ 378100979Srwatson struct mac_policy_conf *tmpc; 379100979Srwatson struct mac_policy_op_entry *mpe; 380100979Srwatson int slot; 381100979Srwatson 382103570Srwatson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*mpc->mpc_ops), 383103570Srwatson M_MACOPVEC, M_WAITOK | M_ZERO); 384100979Srwatson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 385100979Srwatson switch (mpe->mpe_constant) { 386100979Srwatson case MAC_OP_LAST: 387100979Srwatson /* 388100979Srwatson * Doesn't actually happen, but this allows checking 389100979Srwatson * that all enumerated values are handled. 390100979Srwatson */ 391100979Srwatson break; 392100979Srwatson case MAC_DESTROY: 393100979Srwatson mpc->mpc_ops->mpo_destroy = 394100979Srwatson mpe->mpe_function; 395100979Srwatson break; 396100979Srwatson case MAC_INIT: 397100979Srwatson mpc->mpc_ops->mpo_init = 398100979Srwatson mpe->mpe_function; 399100979Srwatson break; 400102123Srwatson case MAC_SYSCALL: 401102123Srwatson mpc->mpc_ops->mpo_syscall = 402102123Srwatson mpe->mpe_function; 403102123Srwatson break; 404104514Srwatson case MAC_INIT_BPFDESC_LABEL: 405104514Srwatson mpc->mpc_ops->mpo_init_bpfdesc_label = 406100979Srwatson mpe->mpe_function; 407100979Srwatson break; 408104514Srwatson case MAC_INIT_CRED_LABEL: 409104514Srwatson mpc->mpc_ops->mpo_init_cred_label = 410100979Srwatson mpe->mpe_function; 411100979Srwatson break; 412104514Srwatson case MAC_INIT_DEVFSDIRENT_LABEL: 413104514Srwatson mpc->mpc_ops->mpo_init_devfsdirent_label = 414100979Srwatson mpe->mpe_function; 415100979Srwatson break; 416104514Srwatson case MAC_INIT_IFNET_LABEL: 417104514Srwatson mpc->mpc_ops->mpo_init_ifnet_label = 418100979Srwatson mpe->mpe_function; 419100979Srwatson break; 420104514Srwatson case MAC_INIT_IPQ_LABEL: 421104514Srwatson mpc->mpc_ops->mpo_init_ipq_label = 422100979Srwatson mpe->mpe_function; 423100979Srwatson break; 424104514Srwatson case MAC_INIT_MBUF_LABEL: 425104514Srwatson mpc->mpc_ops->mpo_init_mbuf_label = 426100979Srwatson mpe->mpe_function; 427100979Srwatson break; 428104514Srwatson case MAC_INIT_MOUNT_LABEL: 429104514Srwatson mpc->mpc_ops->mpo_init_mount_label = 430100979Srwatson mpe->mpe_function; 431100979Srwatson break; 432104514Srwatson case MAC_INIT_MOUNT_FS_LABEL: 433104514Srwatson mpc->mpc_ops->mpo_init_mount_fs_label = 434100979Srwatson mpe->mpe_function; 435100979Srwatson break; 436104514Srwatson case MAC_INIT_PIPE_LABEL: 437104514Srwatson mpc->mpc_ops->mpo_init_pipe_label = 438100979Srwatson mpe->mpe_function; 439100979Srwatson break; 440104514Srwatson case MAC_INIT_SOCKET_LABEL: 441104514Srwatson mpc->mpc_ops->mpo_init_socket_label = 442100979Srwatson mpe->mpe_function; 443100979Srwatson break; 444104514Srwatson case MAC_INIT_SOCKET_PEER_LABEL: 445104514Srwatson mpc->mpc_ops->mpo_init_socket_peer_label = 446100979Srwatson mpe->mpe_function; 447100979Srwatson break; 448104514Srwatson case MAC_INIT_TEMP_LABEL: 449104514Srwatson mpc->mpc_ops->mpo_init_temp_label = 450100979Srwatson mpe->mpe_function; 451100979Srwatson break; 452104514Srwatson case MAC_INIT_VNODE_LABEL: 453104514Srwatson mpc->mpc_ops->mpo_init_vnode_label = 454100979Srwatson mpe->mpe_function; 455100979Srwatson break; 456104514Srwatson case MAC_DESTROY_BPFDESC_LABEL: 457104514Srwatson mpc->mpc_ops->mpo_destroy_bpfdesc_label = 458100979Srwatson mpe->mpe_function; 459100979Srwatson break; 460104514Srwatson case MAC_DESTROY_CRED_LABEL: 461104514Srwatson mpc->mpc_ops->mpo_destroy_cred_label = 462100979Srwatson mpe->mpe_function; 463100979Srwatson break; 464104514Srwatson case MAC_DESTROY_DEVFSDIRENT_LABEL: 465104514Srwatson mpc->mpc_ops->mpo_destroy_devfsdirent_label = 466100979Srwatson mpe->mpe_function; 467100979Srwatson break; 468104514Srwatson case MAC_DESTROY_IFNET_LABEL: 469104514Srwatson mpc->mpc_ops->mpo_destroy_ifnet_label = 470100979Srwatson mpe->mpe_function; 471100979Srwatson break; 472104514Srwatson case MAC_DESTROY_IPQ_LABEL: 473104514Srwatson mpc->mpc_ops->mpo_destroy_ipq_label = 474100979Srwatson mpe->mpe_function; 475100979Srwatson break; 476104514Srwatson case MAC_DESTROY_MBUF_LABEL: 477104514Srwatson mpc->mpc_ops->mpo_destroy_mbuf_label = 478100979Srwatson mpe->mpe_function; 479100979Srwatson break; 480104514Srwatson case MAC_DESTROY_MOUNT_LABEL: 481104514Srwatson mpc->mpc_ops->mpo_destroy_mount_label = 482100979Srwatson mpe->mpe_function; 483100979Srwatson break; 484104514Srwatson case MAC_DESTROY_MOUNT_FS_LABEL: 485104514Srwatson mpc->mpc_ops->mpo_destroy_mount_fs_label = 486100979Srwatson mpe->mpe_function; 487100979Srwatson break; 488104514Srwatson case MAC_DESTROY_PIPE_LABEL: 489104514Srwatson mpc->mpc_ops->mpo_destroy_pipe_label = 490100979Srwatson mpe->mpe_function; 491100979Srwatson break; 492104514Srwatson case MAC_DESTROY_SOCKET_LABEL: 493104514Srwatson mpc->mpc_ops->mpo_destroy_socket_label = 494104514Srwatson mpe->mpe_function; 495104514Srwatson break; 496104514Srwatson case MAC_DESTROY_SOCKET_PEER_LABEL: 497104514Srwatson mpc->mpc_ops->mpo_destroy_socket_peer_label = 498104514Srwatson mpe->mpe_function; 499104514Srwatson break; 500104514Srwatson case MAC_DESTROY_TEMP_LABEL: 501104514Srwatson mpc->mpc_ops->mpo_destroy_temp_label = 502104514Srwatson mpe->mpe_function; 503104514Srwatson break; 504104514Srwatson case MAC_DESTROY_VNODE_LABEL: 505104514Srwatson mpc->mpc_ops->mpo_destroy_vnode_label = 506104514Srwatson mpe->mpe_function; 507104514Srwatson break; 508100979Srwatson case MAC_EXTERNALIZE: 509100979Srwatson mpc->mpc_ops->mpo_externalize = 510100979Srwatson mpe->mpe_function; 511100979Srwatson break; 512100979Srwatson case MAC_INTERNALIZE: 513100979Srwatson mpc->mpc_ops->mpo_internalize = 514100979Srwatson mpe->mpe_function; 515100979Srwatson break; 516100979Srwatson case MAC_CREATE_DEVFS_DEVICE: 517100979Srwatson mpc->mpc_ops->mpo_create_devfs_device = 518100979Srwatson mpe->mpe_function; 519100979Srwatson break; 520100979Srwatson case MAC_CREATE_DEVFS_DIRECTORY: 521100979Srwatson mpc->mpc_ops->mpo_create_devfs_directory = 522100979Srwatson mpe->mpe_function; 523100979Srwatson break; 524104533Srwatson case MAC_CREATE_DEVFS_SYMLINK: 525104533Srwatson mpc->mpc_ops->mpo_create_devfs_symlink = 526104533Srwatson mpe->mpe_function; 527104533Srwatson break; 528100979Srwatson case MAC_CREATE_DEVFS_VNODE: 529100979Srwatson mpc->mpc_ops->mpo_create_devfs_vnode = 530100979Srwatson mpe->mpe_function; 531100979Srwatson break; 532100979Srwatson case MAC_STDCREATEVNODE_EA: 533100979Srwatson mpc->mpc_ops->mpo_stdcreatevnode_ea = 534100979Srwatson mpe->mpe_function; 535100979Srwatson break; 536100979Srwatson case MAC_CREATE_VNODE: 537100979Srwatson mpc->mpc_ops->mpo_create_vnode = 538100979Srwatson mpe->mpe_function; 539100979Srwatson break; 540100979Srwatson case MAC_CREATE_MOUNT: 541100979Srwatson mpc->mpc_ops->mpo_create_mount = 542100979Srwatson mpe->mpe_function; 543100979Srwatson break; 544100979Srwatson case MAC_CREATE_ROOT_MOUNT: 545100979Srwatson mpc->mpc_ops->mpo_create_root_mount = 546100979Srwatson mpe->mpe_function; 547100979Srwatson break; 548100979Srwatson case MAC_RELABEL_VNODE: 549100979Srwatson mpc->mpc_ops->mpo_relabel_vnode = 550100979Srwatson mpe->mpe_function; 551100979Srwatson break; 552100979Srwatson case MAC_UPDATE_DEVFSDIRENT: 553100979Srwatson mpc->mpc_ops->mpo_update_devfsdirent = 554100979Srwatson mpe->mpe_function; 555100979Srwatson break; 556100979Srwatson case MAC_UPDATE_PROCFSVNODE: 557100979Srwatson mpc->mpc_ops->mpo_update_procfsvnode = 558100979Srwatson mpe->mpe_function; 559100979Srwatson break; 560100979Srwatson case MAC_UPDATE_VNODE_FROM_EXTATTR: 561100979Srwatson mpc->mpc_ops->mpo_update_vnode_from_extattr = 562100979Srwatson mpe->mpe_function; 563100979Srwatson break; 564100979Srwatson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 565100979Srwatson mpc->mpc_ops->mpo_update_vnode_from_externalized = 566100979Srwatson mpe->mpe_function; 567100979Srwatson break; 568100979Srwatson case MAC_UPDATE_VNODE_FROM_MOUNT: 569100979Srwatson mpc->mpc_ops->mpo_update_vnode_from_mount = 570100979Srwatson mpe->mpe_function; 571100979Srwatson break; 572100979Srwatson case MAC_CREATE_MBUF_FROM_SOCKET: 573100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_socket = 574100979Srwatson mpe->mpe_function; 575100979Srwatson break; 576100979Srwatson case MAC_CREATE_PIPE: 577100979Srwatson mpc->mpc_ops->mpo_create_pipe = 578100979Srwatson mpe->mpe_function; 579100979Srwatson break; 580100979Srwatson case MAC_CREATE_SOCKET: 581100979Srwatson mpc->mpc_ops->mpo_create_socket = 582100979Srwatson mpe->mpe_function; 583100979Srwatson break; 584100979Srwatson case MAC_CREATE_SOCKET_FROM_SOCKET: 585100979Srwatson mpc->mpc_ops->mpo_create_socket_from_socket = 586100979Srwatson mpe->mpe_function; 587100979Srwatson break; 588100979Srwatson case MAC_RELABEL_PIPE: 589100979Srwatson mpc->mpc_ops->mpo_relabel_pipe = 590100979Srwatson mpe->mpe_function; 591100979Srwatson break; 592100979Srwatson case MAC_RELABEL_SOCKET: 593100979Srwatson mpc->mpc_ops->mpo_relabel_socket = 594100979Srwatson mpe->mpe_function; 595100979Srwatson break; 596100979Srwatson case MAC_SET_SOCKET_PEER_FROM_MBUF: 597100979Srwatson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 598100979Srwatson mpe->mpe_function; 599100979Srwatson break; 600100979Srwatson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 601100979Srwatson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 602100979Srwatson mpe->mpe_function; 603100979Srwatson break; 604100979Srwatson case MAC_CREATE_BPFDESC: 605100979Srwatson mpc->mpc_ops->mpo_create_bpfdesc = 606100979Srwatson mpe->mpe_function; 607100979Srwatson break; 608100979Srwatson case MAC_CREATE_DATAGRAM_FROM_IPQ: 609100979Srwatson mpc->mpc_ops->mpo_create_datagram_from_ipq = 610100979Srwatson mpe->mpe_function; 611100979Srwatson break; 612100979Srwatson case MAC_CREATE_FRAGMENT: 613100979Srwatson mpc->mpc_ops->mpo_create_fragment = 614100979Srwatson mpe->mpe_function; 615100979Srwatson break; 616100979Srwatson case MAC_CREATE_IFNET: 617100979Srwatson mpc->mpc_ops->mpo_create_ifnet = 618100979Srwatson mpe->mpe_function; 619100979Srwatson break; 620100979Srwatson case MAC_CREATE_IPQ: 621100979Srwatson mpc->mpc_ops->mpo_create_ipq = 622100979Srwatson mpe->mpe_function; 623100979Srwatson break; 624100979Srwatson case MAC_CREATE_MBUF_FROM_MBUF: 625100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 626100979Srwatson mpe->mpe_function; 627100979Srwatson break; 628100979Srwatson case MAC_CREATE_MBUF_LINKLAYER: 629100979Srwatson mpc->mpc_ops->mpo_create_mbuf_linklayer = 630100979Srwatson mpe->mpe_function; 631100979Srwatson break; 632100979Srwatson case MAC_CREATE_MBUF_FROM_BPFDESC: 633100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 634100979Srwatson mpe->mpe_function; 635100979Srwatson break; 636100979Srwatson case MAC_CREATE_MBUF_FROM_IFNET: 637100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 638100979Srwatson mpe->mpe_function; 639100979Srwatson break; 640100979Srwatson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 641100979Srwatson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 642100979Srwatson mpe->mpe_function; 643100979Srwatson break; 644100979Srwatson case MAC_CREATE_MBUF_NETLAYER: 645100979Srwatson mpc->mpc_ops->mpo_create_mbuf_netlayer = 646100979Srwatson mpe->mpe_function; 647100979Srwatson break; 648100979Srwatson case MAC_FRAGMENT_MATCH: 649100979Srwatson mpc->mpc_ops->mpo_fragment_match = 650100979Srwatson mpe->mpe_function; 651100979Srwatson break; 652100979Srwatson case MAC_RELABEL_IFNET: 653100979Srwatson mpc->mpc_ops->mpo_relabel_ifnet = 654100979Srwatson mpe->mpe_function; 655100979Srwatson break; 656100979Srwatson case MAC_UPDATE_IPQ: 657100979Srwatson mpc->mpc_ops->mpo_update_ipq = 658100979Srwatson mpe->mpe_function; 659100979Srwatson break; 660100979Srwatson case MAC_CREATE_CRED: 661100979Srwatson mpc->mpc_ops->mpo_create_cred = 662100979Srwatson mpe->mpe_function; 663100979Srwatson break; 664100979Srwatson case MAC_EXECVE_TRANSITION: 665100979Srwatson mpc->mpc_ops->mpo_execve_transition = 666100979Srwatson mpe->mpe_function; 667100979Srwatson break; 668100979Srwatson case MAC_EXECVE_WILL_TRANSITION: 669100979Srwatson mpc->mpc_ops->mpo_execve_will_transition = 670100979Srwatson mpe->mpe_function; 671100979Srwatson break; 672100979Srwatson case MAC_CREATE_PROC0: 673104518Srwatson mpc->mpc_ops->mpo_create_proc0 = 674104518Srwatson mpe->mpe_function; 675100979Srwatson break; 676100979Srwatson case MAC_CREATE_PROC1: 677104518Srwatson mpc->mpc_ops->mpo_create_proc1 = 678104518Srwatson mpe->mpe_function; 679100979Srwatson break; 680100979Srwatson case MAC_RELABEL_CRED: 681100979Srwatson mpc->mpc_ops->mpo_relabel_cred = 682100979Srwatson mpe->mpe_function; 683100979Srwatson break; 684104338Srwatson case MAC_THREAD_USERRET: 685104338Srwatson mpc->mpc_ops->mpo_thread_userret = 686104338Srwatson mpe->mpe_function; 687104338Srwatson break; 688100979Srwatson case MAC_CHECK_BPFDESC_RECEIVE: 689100979Srwatson mpc->mpc_ops->mpo_check_bpfdesc_receive = 690100979Srwatson mpe->mpe_function; 691100979Srwatson break; 692100979Srwatson case MAC_CHECK_CRED_RELABEL: 693100979Srwatson mpc->mpc_ops->mpo_check_cred_relabel = 694100979Srwatson mpe->mpe_function; 695100979Srwatson break; 696100979Srwatson case MAC_CHECK_CRED_VISIBLE: 697100979Srwatson mpc->mpc_ops->mpo_check_cred_visible = 698100979Srwatson mpe->mpe_function; 699100979Srwatson break; 700100979Srwatson case MAC_CHECK_IFNET_RELABEL: 701100979Srwatson mpc->mpc_ops->mpo_check_ifnet_relabel = 702100979Srwatson mpe->mpe_function; 703100979Srwatson break; 704100979Srwatson case MAC_CHECK_IFNET_TRANSMIT: 705100979Srwatson mpc->mpc_ops->mpo_check_ifnet_transmit = 706100979Srwatson mpe->mpe_function; 707100979Srwatson break; 708100979Srwatson case MAC_CHECK_MOUNT_STAT: 709100979Srwatson mpc->mpc_ops->mpo_check_mount_stat = 710100979Srwatson mpe->mpe_function; 711100979Srwatson break; 712100979Srwatson case MAC_CHECK_PIPE_IOCTL: 713100979Srwatson mpc->mpc_ops->mpo_check_pipe_ioctl = 714100979Srwatson mpe->mpe_function; 715100979Srwatson break; 716102115Srwatson case MAC_CHECK_PIPE_POLL: 717102115Srwatson mpc->mpc_ops->mpo_check_pipe_poll = 718100979Srwatson mpe->mpe_function; 719100979Srwatson break; 720102115Srwatson case MAC_CHECK_PIPE_READ: 721102115Srwatson mpc->mpc_ops->mpo_check_pipe_read = 722102115Srwatson mpe->mpe_function; 723102115Srwatson break; 724100979Srwatson case MAC_CHECK_PIPE_RELABEL: 725100979Srwatson mpc->mpc_ops->mpo_check_pipe_relabel = 726100979Srwatson mpe->mpe_function; 727100979Srwatson break; 728102115Srwatson case MAC_CHECK_PIPE_STAT: 729102115Srwatson mpc->mpc_ops->mpo_check_pipe_stat = 730102115Srwatson mpe->mpe_function; 731102115Srwatson break; 732102115Srwatson case MAC_CHECK_PIPE_WRITE: 733102115Srwatson mpc->mpc_ops->mpo_check_pipe_write = 734102115Srwatson mpe->mpe_function; 735102115Srwatson break; 736100979Srwatson case MAC_CHECK_PROC_DEBUG: 737100979Srwatson mpc->mpc_ops->mpo_check_proc_debug = 738100979Srwatson mpe->mpe_function; 739100979Srwatson break; 740100979Srwatson case MAC_CHECK_PROC_SCHED: 741100979Srwatson mpc->mpc_ops->mpo_check_proc_sched = 742100979Srwatson mpe->mpe_function; 743100979Srwatson break; 744100979Srwatson case MAC_CHECK_PROC_SIGNAL: 745100979Srwatson mpc->mpc_ops->mpo_check_proc_signal = 746100979Srwatson mpe->mpe_function; 747100979Srwatson break; 748100979Srwatson case MAC_CHECK_SOCKET_BIND: 749100979Srwatson mpc->mpc_ops->mpo_check_socket_bind = 750100979Srwatson mpe->mpe_function; 751100979Srwatson break; 752100979Srwatson case MAC_CHECK_SOCKET_CONNECT: 753100979Srwatson mpc->mpc_ops->mpo_check_socket_connect = 754100979Srwatson mpe->mpe_function; 755100979Srwatson break; 756101933Srwatson case MAC_CHECK_SOCKET_DELIVER: 757101933Srwatson mpc->mpc_ops->mpo_check_socket_deliver = 758101933Srwatson mpe->mpe_function; 759101933Srwatson break; 760100979Srwatson case MAC_CHECK_SOCKET_LISTEN: 761100979Srwatson mpc->mpc_ops->mpo_check_socket_listen = 762100979Srwatson mpe->mpe_function; 763100979Srwatson break; 764100979Srwatson case MAC_CHECK_SOCKET_RELABEL: 765100979Srwatson mpc->mpc_ops->mpo_check_socket_relabel = 766100979Srwatson mpe->mpe_function; 767100979Srwatson break; 768100979Srwatson case MAC_CHECK_SOCKET_VISIBLE: 769100979Srwatson mpc->mpc_ops->mpo_check_socket_visible = 770100979Srwatson mpe->mpe_function; 771100979Srwatson break; 772100979Srwatson case MAC_CHECK_VNODE_ACCESS: 773100979Srwatson mpc->mpc_ops->mpo_check_vnode_access = 774100979Srwatson mpe->mpe_function; 775100979Srwatson break; 776100979Srwatson case MAC_CHECK_VNODE_CHDIR: 777100979Srwatson mpc->mpc_ops->mpo_check_vnode_chdir = 778100979Srwatson mpe->mpe_function; 779100979Srwatson break; 780100979Srwatson case MAC_CHECK_VNODE_CHROOT: 781100979Srwatson mpc->mpc_ops->mpo_check_vnode_chroot = 782100979Srwatson mpe->mpe_function; 783100979Srwatson break; 784100979Srwatson case MAC_CHECK_VNODE_CREATE: 785100979Srwatson mpc->mpc_ops->mpo_check_vnode_create = 786100979Srwatson mpe->mpe_function; 787100979Srwatson break; 788100979Srwatson case MAC_CHECK_VNODE_DELETE: 789100979Srwatson mpc->mpc_ops->mpo_check_vnode_delete = 790100979Srwatson mpe->mpe_function; 791100979Srwatson break; 792100979Srwatson case MAC_CHECK_VNODE_DELETEACL: 793100979Srwatson mpc->mpc_ops->mpo_check_vnode_deleteacl = 794100979Srwatson mpe->mpe_function; 795100979Srwatson break; 796100979Srwatson case MAC_CHECK_VNODE_EXEC: 797100979Srwatson mpc->mpc_ops->mpo_check_vnode_exec = 798100979Srwatson mpe->mpe_function; 799100979Srwatson break; 800100979Srwatson case MAC_CHECK_VNODE_GETACL: 801100979Srwatson mpc->mpc_ops->mpo_check_vnode_getacl = 802100979Srwatson mpe->mpe_function; 803100979Srwatson break; 804100979Srwatson case MAC_CHECK_VNODE_GETEXTATTR: 805100979Srwatson mpc->mpc_ops->mpo_check_vnode_getextattr = 806100979Srwatson mpe->mpe_function; 807100979Srwatson break; 808104529Srwatson case MAC_CHECK_VNODE_LINK: 809104529Srwatson mpc->mpc_ops->mpo_check_vnode_link = 810104529Srwatson mpe->mpe_function; 811104529Srwatson break; 812100979Srwatson case MAC_CHECK_VNODE_LOOKUP: 813100979Srwatson mpc->mpc_ops->mpo_check_vnode_lookup = 814100979Srwatson mpe->mpe_function; 815100979Srwatson break; 816100979Srwatson case MAC_CHECK_VNODE_MMAP_PERMS: 817100979Srwatson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 818100979Srwatson mpe->mpe_function; 819100979Srwatson break; 820100979Srwatson case MAC_CHECK_VNODE_OPEN: 821100979Srwatson mpc->mpc_ops->mpo_check_vnode_open = 822100979Srwatson mpe->mpe_function; 823100979Srwatson break; 824102112Srwatson case MAC_CHECK_VNODE_POLL: 825102112Srwatson mpc->mpc_ops->mpo_check_vnode_poll = 826102112Srwatson mpe->mpe_function; 827102112Srwatson break; 828102112Srwatson case MAC_CHECK_VNODE_READ: 829102112Srwatson mpc->mpc_ops->mpo_check_vnode_read = 830102112Srwatson mpe->mpe_function; 831102112Srwatson break; 832100979Srwatson case MAC_CHECK_VNODE_READDIR: 833100979Srwatson mpc->mpc_ops->mpo_check_vnode_readdir = 834100979Srwatson mpe->mpe_function; 835100979Srwatson break; 836100979Srwatson case MAC_CHECK_VNODE_READLINK: 837100979Srwatson mpc->mpc_ops->mpo_check_vnode_readlink = 838100979Srwatson mpe->mpe_function; 839100979Srwatson break; 840100979Srwatson case MAC_CHECK_VNODE_RELABEL: 841100979Srwatson mpc->mpc_ops->mpo_check_vnode_relabel = 842100979Srwatson mpe->mpe_function; 843100979Srwatson break; 844100979Srwatson case MAC_CHECK_VNODE_RENAME_FROM: 845100979Srwatson mpc->mpc_ops->mpo_check_vnode_rename_from = 846100979Srwatson mpe->mpe_function; 847100979Srwatson break; 848100979Srwatson case MAC_CHECK_VNODE_RENAME_TO: 849100979Srwatson mpc->mpc_ops->mpo_check_vnode_rename_to = 850100979Srwatson mpe->mpe_function; 851100979Srwatson break; 852100979Srwatson case MAC_CHECK_VNODE_REVOKE: 853100979Srwatson mpc->mpc_ops->mpo_check_vnode_revoke = 854100979Srwatson mpe->mpe_function; 855100979Srwatson break; 856100979Srwatson case MAC_CHECK_VNODE_SETACL: 857100979Srwatson mpc->mpc_ops->mpo_check_vnode_setacl = 858100979Srwatson mpe->mpe_function; 859100979Srwatson break; 860100979Srwatson case MAC_CHECK_VNODE_SETEXTATTR: 861100979Srwatson mpc->mpc_ops->mpo_check_vnode_setextattr = 862100979Srwatson mpe->mpe_function; 863100979Srwatson break; 864100979Srwatson case MAC_CHECK_VNODE_SETFLAGS: 865100979Srwatson mpc->mpc_ops->mpo_check_vnode_setflags = 866100979Srwatson mpe->mpe_function; 867100979Srwatson break; 868100979Srwatson case MAC_CHECK_VNODE_SETMODE: 869100979Srwatson mpc->mpc_ops->mpo_check_vnode_setmode = 870100979Srwatson mpe->mpe_function; 871100979Srwatson break; 872100979Srwatson case MAC_CHECK_VNODE_SETOWNER: 873100979Srwatson mpc->mpc_ops->mpo_check_vnode_setowner = 874100979Srwatson mpe->mpe_function; 875100979Srwatson break; 876100979Srwatson case MAC_CHECK_VNODE_SETUTIMES: 877100979Srwatson mpc->mpc_ops->mpo_check_vnode_setutimes = 878100979Srwatson mpe->mpe_function; 879100979Srwatson break; 880100979Srwatson case MAC_CHECK_VNODE_STAT: 881100979Srwatson mpc->mpc_ops->mpo_check_vnode_stat = 882100979Srwatson mpe->mpe_function; 883100979Srwatson break; 884102112Srwatson case MAC_CHECK_VNODE_WRITE: 885102112Srwatson mpc->mpc_ops->mpo_check_vnode_write = 886102112Srwatson mpe->mpe_function; 887102112Srwatson break; 888100979Srwatson/* 889100979Srwatson default: 890100979Srwatson printf("MAC policy `%s': unknown operation %d\n", 891100979Srwatson mpc->mpc_name, mpe->mpe_constant); 892100979Srwatson return (EINVAL); 893100979Srwatson*/ 894100979Srwatson } 895100979Srwatson } 896100979Srwatson MAC_POLICY_LIST_LOCK(); 897100979Srwatson if (mac_policy_list_busy > 0) { 898100979Srwatson MAC_POLICY_LIST_UNLOCK(); 899100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 900100979Srwatson mpc->mpc_ops = NULL; 901100979Srwatson return (EBUSY); 902100979Srwatson } 903100979Srwatson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 904100979Srwatson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 905100979Srwatson MAC_POLICY_LIST_UNLOCK(); 906100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 907100979Srwatson mpc->mpc_ops = NULL; 908100979Srwatson return (EEXIST); 909100979Srwatson } 910100979Srwatson } 911100979Srwatson if (mpc->mpc_field_off != NULL) { 912100979Srwatson slot = ffs(mac_policy_offsets_free); 913100979Srwatson if (slot == 0) { 914100979Srwatson MAC_POLICY_LIST_UNLOCK(); 915100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 916100979Srwatson mpc->mpc_ops = NULL; 917100979Srwatson return (ENOMEM); 918100979Srwatson } 919100979Srwatson slot--; 920100979Srwatson mac_policy_offsets_free &= ~(1 << slot); 921100979Srwatson *mpc->mpc_field_off = slot; 922100979Srwatson } 923100979Srwatson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 924100979Srwatson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 925100979Srwatson 926100979Srwatson /* Per-policy initialization. */ 927100979Srwatson if (mpc->mpc_ops->mpo_init != NULL) 928100979Srwatson (*(mpc->mpc_ops->mpo_init))(mpc); 929100979Srwatson MAC_POLICY_LIST_UNLOCK(); 930100979Srwatson 931100979Srwatson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 932100979Srwatson mpc->mpc_name); 933100979Srwatson 934100979Srwatson return (0); 935100979Srwatson} 936100979Srwatson 937100979Srwatsonstatic int 938100979Srwatsonmac_policy_unregister(struct mac_policy_conf *mpc) 939100979Srwatson{ 940100979Srwatson 941104520Srwatson /* 942104520Srwatson * If we fail the load, we may get a request to unload. Check 943104520Srwatson * to see if we did the run-time registration, and if not, 944104520Srwatson * silently succeed. 945104520Srwatson */ 946104520Srwatson MAC_POLICY_LIST_LOCK(); 947104520Srwatson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) == 0) { 948104520Srwatson MAC_POLICY_LIST_UNLOCK(); 949104520Srwatson return (0); 950104520Srwatson } 951100979Srwatson#if 0 952100979Srwatson /* 953100979Srwatson * Don't allow unloading modules with private data. 954100979Srwatson */ 955104520Srwatson if (mpc->mpc_field_off != NULL) { 956104520Srwatson MAC_POLICY_LIST_UNLOCK(); 957100979Srwatson return (EBUSY); 958104520Srwatson } 959100979Srwatson#endif 960104520Srwatson /* 961104520Srwatson * Only allow the unload to proceed if the module is unloadable 962104520Srwatson * by its own definition. 963104520Srwatson */ 964104520Srwatson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) { 965104520Srwatson MAC_POLICY_LIST_UNLOCK(); 966100979Srwatson return (EBUSY); 967104520Srwatson } 968104520Srwatson /* 969104520Srwatson * Right now, we EBUSY if the list is in use. In the future, 970104520Srwatson * for reliability reasons, we might want to sleep and wakeup 971104520Srwatson * later to try again. 972104520Srwatson */ 973100979Srwatson if (mac_policy_list_busy > 0) { 974100979Srwatson MAC_POLICY_LIST_UNLOCK(); 975100979Srwatson return (EBUSY); 976100979Srwatson } 977100979Srwatson if (mpc->mpc_ops->mpo_destroy != NULL) 978100979Srwatson (*(mpc->mpc_ops->mpo_destroy))(mpc); 979100979Srwatson 980100979Srwatson LIST_REMOVE(mpc, mpc_list); 981100979Srwatson MAC_POLICY_LIST_UNLOCK(); 982100979Srwatson 983100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 984100979Srwatson mpc->mpc_ops = NULL; 985100979Srwatson 986100979Srwatson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 987100979Srwatson mpc->mpc_name); 988100979Srwatson 989100979Srwatson return (0); 990100979Srwatson} 991100979Srwatson 992100979Srwatson/* 993100979Srwatson * Define an error value precedence, and given two arguments, selects the 994100979Srwatson * value with the higher precedence. 995100979Srwatson */ 996100979Srwatsonstatic int 997100979Srwatsonerror_select(int error1, int error2) 998100979Srwatson{ 999100979Srwatson 1000100979Srwatson /* Certain decision-making errors take top priority. */ 1001100979Srwatson if (error1 == EDEADLK || error2 == EDEADLK) 1002100979Srwatson return (EDEADLK); 1003100979Srwatson 1004100979Srwatson /* Invalid arguments should be reported where possible. */ 1005100979Srwatson if (error1 == EINVAL || error2 == EINVAL) 1006100979Srwatson return (EINVAL); 1007100979Srwatson 1008100979Srwatson /* Precedence goes to "visibility", with both process and file. */ 1009100979Srwatson if (error1 == ESRCH || error2 == ESRCH) 1010100979Srwatson return (ESRCH); 1011100979Srwatson 1012100979Srwatson if (error1 == ENOENT || error2 == ENOENT) 1013100979Srwatson return (ENOENT); 1014100979Srwatson 1015100979Srwatson /* Precedence goes to DAC/MAC protections. */ 1016100979Srwatson if (error1 == EACCES || error2 == EACCES) 1017100979Srwatson return (EACCES); 1018100979Srwatson 1019100979Srwatson /* Precedence goes to privilege. */ 1020100979Srwatson if (error1 == EPERM || error2 == EPERM) 1021100979Srwatson return (EPERM); 1022100979Srwatson 1023100979Srwatson /* Precedence goes to error over success; otherwise, arbitrary. */ 1024100979Srwatson if (error1 != 0) 1025100979Srwatson return (error1); 1026100979Srwatson return (error2); 1027100979Srwatson} 1028100979Srwatson 1029104521Srwatsonstatic void 1030104521Srwatsonmac_init_label(struct label *label) 1031104521Srwatson{ 1032104521Srwatson 1033104521Srwatson bzero(label, sizeof(*label)); 1034104521Srwatson label->l_flags = MAC_FLAG_INITIALIZED; 1035104521Srwatson} 1036104521Srwatson 1037104521Srwatsonstatic void 1038104521Srwatsonmac_destroy_label(struct label *label) 1039104521Srwatson{ 1040104521Srwatson 1041104521Srwatson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 1042104521Srwatson ("destroying uninitialized label")); 1043104521Srwatson 1044104521Srwatson bzero(label, sizeof(*label)); 1045104521Srwatson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 1046104521Srwatson} 1047104521Srwatson 1048104521Srwatsonstatic void 1049104521Srwatsonmac_init_structmac(struct mac *mac) 1050104521Srwatson{ 1051104521Srwatson 1052104521Srwatson bzero(mac, sizeof(*mac)); 1053104521Srwatson mac->m_macflags = MAC_FLAG_INITIALIZED; 1054104521Srwatson} 1055104521Srwatson 1056100979Srwatsonvoid 1057104527Srwatsonmac_init_bpfdesc(struct bpf_d *bpf_d) 1058104521Srwatson{ 1059104521Srwatson 1060104527Srwatson mac_init_label(&bpf_d->bd_label); 1061104527Srwatson MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label); 1062104521Srwatson#ifdef MAC_DEBUG 1063104527Srwatson atomic_add_int(&nmacbpfdescs, 1); 1064104521Srwatson#endif 1065104521Srwatson} 1066104521Srwatson 1067104521Srwatsonvoid 1068104521Srwatsonmac_init_cred(struct ucred *cr) 1069104521Srwatson{ 1070104521Srwatson 1071104521Srwatson mac_init_label(&cr->cr_label); 1072104521Srwatson MAC_PERFORM(init_cred_label, &cr->cr_label); 1073104521Srwatson#ifdef MAC_DEBUG 1074104521Srwatson atomic_add_int(&nmaccreds, 1); 1075104521Srwatson#endif 1076104521Srwatson} 1077104521Srwatson 1078104521Srwatsonvoid 1079104527Srwatsonmac_init_devfsdirent(struct devfs_dirent *de) 1080104521Srwatson{ 1081104521Srwatson 1082104527Srwatson mac_init_label(&de->de_label); 1083104527Srwatson MAC_PERFORM(init_devfsdirent_label, &de->de_label); 1084104521Srwatson#ifdef MAC_DEBUG 1085104527Srwatson atomic_add_int(&nmacdevfsdirents, 1); 1086104521Srwatson#endif 1087104521Srwatson} 1088104521Srwatson 1089104521Srwatsonvoid 1090104521Srwatsonmac_init_ifnet(struct ifnet *ifp) 1091104521Srwatson{ 1092104521Srwatson 1093104521Srwatson mac_init_label(&ifp->if_label); 1094104521Srwatson MAC_PERFORM(init_ifnet_label, &ifp->if_label); 1095104521Srwatson#ifdef MAC_DEBUG 1096104521Srwatson atomic_add_int(&nmacifnets, 1); 1097104521Srwatson#endif 1098104521Srwatson} 1099104521Srwatson 1100104521Srwatsonvoid 1101104527Srwatsonmac_init_ipq(struct ipq *ipq) 1102104521Srwatson{ 1103104521Srwatson 1104104527Srwatson mac_init_label(&ipq->ipq_label); 1105104527Srwatson MAC_PERFORM(init_ipq_label, &ipq->ipq_label); 1106104521Srwatson#ifdef MAC_DEBUG 1107104527Srwatson atomic_add_int(&nmacipqs, 1); 1108104521Srwatson#endif 1109104521Srwatson} 1110104521Srwatson 1111104527Srwatsonint 1112104527Srwatsonmac_init_mbuf(struct mbuf *m, int flag) 1113104527Srwatson{ 1114104528Srwatson int error; 1115104528Srwatson 1116104527Srwatson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 1117104527Srwatson 1118104527Srwatson mac_init_label(&m->m_pkthdr.label); 1119104527Srwatson 1120104528Srwatson MAC_CHECK(init_mbuf_label, &m->m_pkthdr.label, flag); 1121104528Srwatson if (error) { 1122104528Srwatson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 1123104528Srwatson mac_destroy_label(&m->m_pkthdr.label); 1124104528Srwatson } 1125104528Srwatson 1126104527Srwatson#ifdef MAC_DEBUG 1127104528Srwatson if (error == 0) 1128104528Srwatson atomic_add_int(&nmacmbufs, 1); 1129104527Srwatson#endif 1130104528Srwatson return (error); 1131104527Srwatson} 1132104527Srwatson 1133104521Srwatsonvoid 1134104527Srwatsonmac_init_mount(struct mount *mp) 1135104521Srwatson{ 1136104521Srwatson 1137104527Srwatson mac_init_label(&mp->mnt_mntlabel); 1138104527Srwatson mac_init_label(&mp->mnt_fslabel); 1139104527Srwatson MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel); 1140104527Srwatson MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel); 1141104521Srwatson#ifdef MAC_DEBUG 1142104527Srwatson atomic_add_int(&nmacmounts, 1); 1143104521Srwatson#endif 1144104521Srwatson} 1145104521Srwatson 1146104521Srwatsonvoid 1147104527Srwatsonmac_init_pipe(struct pipe *pipe) 1148104521Srwatson{ 1149104527Srwatson struct label *label; 1150104521Srwatson 1151104527Srwatson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 1152104527Srwatson mac_init_label(label); 1153104527Srwatson pipe->pipe_label = label; 1154104527Srwatson pipe->pipe_peer->pipe_label = label; 1155104527Srwatson MAC_PERFORM(init_pipe_label, pipe->pipe_label); 1156104521Srwatson#ifdef MAC_DEBUG 1157104527Srwatson atomic_add_int(&nmacpipes, 1); 1158104521Srwatson#endif 1159104521Srwatson} 1160104521Srwatson 1161104541Srwatsonstatic int 1162104541Srwatsonmac_init_socket_label(struct label *label, int flag) 1163104521Srwatson{ 1164104541Srwatson int error; 1165104521Srwatson 1166104541Srwatson mac_init_label(label); 1167104541Srwatson 1168104541Srwatson MAC_CHECK(init_socket_label, label, flag); 1169104541Srwatson if (error) { 1170104541Srwatson MAC_PERFORM(destroy_socket_label, label); 1171104541Srwatson mac_destroy_label(label); 1172104541Srwatson } 1173104541Srwatson 1174104521Srwatson#ifdef MAC_DEBUG 1175104541Srwatson if (error == 0) 1176104541Srwatson atomic_add_int(&nmacsockets, 1); 1177104521Srwatson#endif 1178104541Srwatson 1179104541Srwatson return (error); 1180104521Srwatson} 1181104521Srwatson 1182104541Srwatsonstatic int 1183104541Srwatsonmac_init_socket_peer_label(struct label *label, int flag) 1184104541Srwatson{ 1185104541Srwatson int error; 1186104541Srwatson 1187104541Srwatson mac_init_label(label); 1188104541Srwatson 1189104541Srwatson MAC_CHECK(init_socket_peer_label, label, flag); 1190104541Srwatson if (error) { 1191104541Srwatson MAC_PERFORM(destroy_socket_label, label); 1192104541Srwatson mac_destroy_label(label); 1193104541Srwatson } 1194104541Srwatson 1195104541Srwatson return (error); 1196104541Srwatson} 1197104541Srwatson 1198104541Srwatsonint 1199104541Srwatsonmac_init_socket(struct socket *socket, int flag) 1200104541Srwatson{ 1201104541Srwatson int error; 1202104541Srwatson 1203104541Srwatson error = mac_init_socket_label(&socket->so_label, flag); 1204104541Srwatson if (error) 1205104541Srwatson return (error); 1206104541Srwatson 1207104541Srwatson error = mac_init_socket_peer_label(&socket->so_peerlabel, flag); 1208104541Srwatson if (error) 1209104541Srwatson mac_destroy_socket_label(&socket->so_label); 1210104541Srwatson 1211104541Srwatson return (error); 1212104541Srwatson} 1213104541Srwatson 1214104527Srwatsonstatic void 1215104527Srwatsonmac_init_temp(struct label *label) 1216104521Srwatson{ 1217104521Srwatson 1218104527Srwatson mac_init_label(label); 1219104527Srwatson MAC_PERFORM(init_temp_label, label); 1220104521Srwatson#ifdef MAC_DEBUG 1221104527Srwatson atomic_add_int(&nmactemp, 1); 1222104521Srwatson#endif 1223104521Srwatson} 1224104521Srwatson 1225104521Srwatsonvoid 1226104527Srwatsonmac_init_vnode(struct vnode *vp) 1227104521Srwatson{ 1228104521Srwatson 1229104527Srwatson mac_init_label(&vp->v_label); 1230104527Srwatson MAC_PERFORM(init_vnode_label, &vp->v_label); 1231104521Srwatson#ifdef MAC_DEBUG 1232104527Srwatson atomic_add_int(&nmacvnodes, 1); 1233104521Srwatson#endif 1234104521Srwatson} 1235104521Srwatson 1236104521Srwatsonvoid 1237104527Srwatsonmac_destroy_bpfdesc(struct bpf_d *bpf_d) 1238104521Srwatson{ 1239104521Srwatson 1240104527Srwatson MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label); 1241104527Srwatson mac_destroy_label(&bpf_d->bd_label); 1242104521Srwatson#ifdef MAC_DEBUG 1243104527Srwatson atomic_subtract_int(&nmacbpfdescs, 1); 1244104521Srwatson#endif 1245104521Srwatson} 1246104521Srwatson 1247104521Srwatsonvoid 1248104527Srwatsonmac_destroy_cred(struct ucred *cr) 1249104521Srwatson{ 1250104521Srwatson 1251104527Srwatson MAC_PERFORM(destroy_cred_label, &cr->cr_label); 1252104527Srwatson mac_destroy_label(&cr->cr_label); 1253104521Srwatson#ifdef MAC_DEBUG 1254104527Srwatson atomic_subtract_int(&nmaccreds, 1); 1255104521Srwatson#endif 1256104521Srwatson} 1257104521Srwatson 1258104521Srwatsonvoid 1259104527Srwatsonmac_destroy_devfsdirent(struct devfs_dirent *de) 1260104521Srwatson{ 1261104521Srwatson 1262104527Srwatson MAC_PERFORM(destroy_devfsdirent_label, &de->de_label); 1263104527Srwatson mac_destroy_label(&de->de_label); 1264104521Srwatson#ifdef MAC_DEBUG 1265104527Srwatson atomic_subtract_int(&nmacdevfsdirents, 1); 1266104521Srwatson#endif 1267104521Srwatson} 1268104521Srwatson 1269104521Srwatsonvoid 1270104527Srwatsonmac_destroy_ifnet(struct ifnet *ifp) 1271104521Srwatson{ 1272104521Srwatson 1273104527Srwatson MAC_PERFORM(destroy_ifnet_label, &ifp->if_label); 1274104527Srwatson mac_destroy_label(&ifp->if_label); 1275104521Srwatson#ifdef MAC_DEBUG 1276104527Srwatson atomic_subtract_int(&nmacifnets, 1); 1277104521Srwatson#endif 1278104521Srwatson} 1279104521Srwatson 1280104521Srwatsonvoid 1281104527Srwatsonmac_destroy_ipq(struct ipq *ipq) 1282104521Srwatson{ 1283104521Srwatson 1284104527Srwatson MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label); 1285104527Srwatson mac_destroy_label(&ipq->ipq_label); 1286104521Srwatson#ifdef MAC_DEBUG 1287104527Srwatson atomic_subtract_int(&nmacipqs, 1); 1288104521Srwatson#endif 1289104521Srwatson} 1290104521Srwatson 1291104527Srwatsonvoid 1292104527Srwatsonmac_destroy_mbuf(struct mbuf *m) 1293104521Srwatson{ 1294104521Srwatson 1295104527Srwatson MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label); 1296104527Srwatson mac_destroy_label(&m->m_pkthdr.label); 1297104521Srwatson#ifdef MAC_DEBUG 1298104527Srwatson atomic_subtract_int(&nmacmbufs, 1); 1299104521Srwatson#endif 1300104521Srwatson} 1301104521Srwatson 1302104527Srwatsonvoid 1303104527Srwatsonmac_destroy_mount(struct mount *mp) 1304104521Srwatson{ 1305104521Srwatson 1306104527Srwatson MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel); 1307104527Srwatson MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel); 1308104527Srwatson mac_destroy_label(&mp->mnt_fslabel); 1309104527Srwatson mac_destroy_label(&mp->mnt_mntlabel); 1310104521Srwatson#ifdef MAC_DEBUG 1311104527Srwatson atomic_subtract_int(&nmacmounts, 1); 1312104521Srwatson#endif 1313104521Srwatson} 1314104521Srwatson 1315104521Srwatsonvoid 1316104527Srwatsonmac_destroy_pipe(struct pipe *pipe) 1317104521Srwatson{ 1318104521Srwatson 1319104527Srwatson MAC_PERFORM(destroy_pipe_label, pipe->pipe_label); 1320104527Srwatson mac_destroy_label(pipe->pipe_label); 1321104527Srwatson free(pipe->pipe_label, M_MACPIPELABEL); 1322104521Srwatson#ifdef MAC_DEBUG 1323104527Srwatson atomic_subtract_int(&nmacpipes, 1); 1324104521Srwatson#endif 1325104521Srwatson} 1326104521Srwatson 1327104541Srwatsonstatic void 1328104541Srwatsonmac_destroy_socket_label(struct label *label) 1329104521Srwatson{ 1330104521Srwatson 1331104541Srwatson MAC_PERFORM(destroy_socket_label, label); 1332104541Srwatson mac_destroy_label(label); 1333104521Srwatson#ifdef MAC_DEBUG 1334104527Srwatson atomic_subtract_int(&nmacsockets, 1); 1335104521Srwatson#endif 1336104521Srwatson} 1337104521Srwatson 1338104527Srwatsonstatic void 1339104541Srwatsonmac_destroy_socket_peer_label(struct label *label) 1340104541Srwatson{ 1341104541Srwatson 1342104541Srwatson MAC_PERFORM(destroy_socket_peer_label, label); 1343104541Srwatson mac_destroy_label(label); 1344104541Srwatson} 1345104541Srwatson 1346104541Srwatsonvoid 1347104541Srwatsonmac_destroy_socket(struct socket *socket) 1348104541Srwatson{ 1349104541Srwatson 1350104541Srwatson mac_destroy_socket_label(&socket->so_label); 1351104541Srwatson mac_destroy_socket_peer_label(&socket->so_peerlabel); 1352104541Srwatson} 1353104541Srwatson 1354104541Srwatsonstatic void 1355104527Srwatsonmac_destroy_temp(struct label *label) 1356104521Srwatson{ 1357104521Srwatson 1358104527Srwatson MAC_PERFORM(destroy_temp_label, label); 1359104527Srwatson mac_destroy_label(label); 1360104521Srwatson#ifdef MAC_DEBUG 1361104527Srwatson atomic_subtract_int(&nmactemp, 1); 1362104521Srwatson#endif 1363104521Srwatson} 1364104521Srwatson 1365104521Srwatsonvoid 1366104527Srwatsonmac_destroy_vnode(struct vnode *vp) 1367104521Srwatson{ 1368104521Srwatson 1369104527Srwatson MAC_PERFORM(destroy_vnode_label, &vp->v_label); 1370104527Srwatson mac_destroy_label(&vp->v_label); 1371104521Srwatson#ifdef MAC_DEBUG 1372104527Srwatson atomic_subtract_int(&nmacvnodes, 1); 1373104521Srwatson#endif 1374104521Srwatson} 1375104521Srwatson 1376104522Srwatsonstatic int 1377104522Srwatsonmac_externalize(struct label *label, struct mac *mac) 1378104522Srwatson{ 1379104522Srwatson int error; 1380104522Srwatson 1381104522Srwatson mac_init_structmac(mac); 1382104522Srwatson MAC_CHECK(externalize, label, mac); 1383104522Srwatson 1384104522Srwatson return (error); 1385104522Srwatson} 1386104522Srwatson 1387104522Srwatsonstatic int 1388104522Srwatsonmac_internalize(struct label *label, struct mac *mac) 1389104522Srwatson{ 1390104522Srwatson int error; 1391104522Srwatson 1392104522Srwatson mac_init_temp(label); 1393104522Srwatson MAC_CHECK(internalize, label, mac); 1394104522Srwatson if (error) 1395104522Srwatson mac_destroy_temp(label); 1396104522Srwatson 1397104522Srwatson return (error); 1398104522Srwatson} 1399104522Srwatson 1400104522Srwatson/* 1401104522Srwatson * Initialize MAC label for the first kernel process, from which other 1402104522Srwatson * kernel processes and threads are spawned. 1403104522Srwatson */ 1404104521Srwatsonvoid 1405104522Srwatsonmac_create_proc0(struct ucred *cred) 1406104522Srwatson{ 1407104522Srwatson 1408104522Srwatson MAC_PERFORM(create_proc0, cred); 1409104522Srwatson} 1410104522Srwatson 1411104522Srwatson/* 1412104522Srwatson * Initialize MAC label for the first userland process, from which other 1413104522Srwatson * userland processes and threads are spawned. 1414104522Srwatson */ 1415104522Srwatsonvoid 1416104522Srwatsonmac_create_proc1(struct ucred *cred) 1417104522Srwatson{ 1418104522Srwatson 1419104522Srwatson MAC_PERFORM(create_proc1, cred); 1420104522Srwatson} 1421104522Srwatson 1422104522Srwatsonvoid 1423104522Srwatsonmac_thread_userret(struct thread *td) 1424104522Srwatson{ 1425104522Srwatson 1426104522Srwatson MAC_PERFORM(thread_userret, td); 1427104522Srwatson} 1428104522Srwatson 1429104522Srwatson/* 1430104522Srwatson * When a new process is created, its label must be initialized. Generally, 1431104522Srwatson * this involves inheritence from the parent process, modulo possible 1432104522Srwatson * deltas. This function allows that processing to take place. 1433104522Srwatson */ 1434104522Srwatsonvoid 1435104522Srwatsonmac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 1436104522Srwatson{ 1437104522Srwatson 1438104522Srwatson MAC_PERFORM(create_cred, parent_cred, child_cred); 1439104522Srwatson} 1440104522Srwatson 1441104522Srwatsonvoid 1442100979Srwatsonmac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 1443100979Srwatson{ 1444100979Srwatson 1445100979Srwatson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 1446100979Srwatson} 1447100979Srwatson 1448100979Srwatsonvoid 1449100979Srwatsonmac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 1450100979Srwatson{ 1451100979Srwatson 1452100979Srwatson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 1453100979Srwatson} 1454100979Srwatson 1455100979Srwatson/* 1456100979Srwatson * Support callout for policies that manage their own externalization 1457100979Srwatson * using extended attributes. 1458100979Srwatson */ 1459100979Srwatsonstatic int 1460100979Srwatsonmac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 1461100979Srwatson{ 1462100979Srwatson int error; 1463100979Srwatson 1464100979Srwatson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 1465100979Srwatson &mp->mnt_fslabel); 1466100979Srwatson 1467100979Srwatson return (error); 1468100979Srwatson} 1469100979Srwatson 1470100979Srwatson/* 1471100979Srwatson * Given an externalized mac label, internalize it and stamp it on a 1472100979Srwatson * vnode. 1473100979Srwatson */ 1474100979Srwatsonstatic int 1475100979Srwatsonmac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 1476100979Srwatson{ 1477100979Srwatson int error; 1478100979Srwatson 1479100979Srwatson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 1480100979Srwatson 1481100979Srwatson return (error); 1482100979Srwatson} 1483100979Srwatson 1484100979Srwatson/* 1485100979Srwatson * Call out to individual policies to update the label in a vnode from 1486100979Srwatson * the mountpoint. 1487100979Srwatson */ 1488100979Srwatsonvoid 1489100979Srwatsonmac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 1490100979Srwatson{ 1491100979Srwatson 1492100979Srwatson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 1493100979Srwatson &mp->mnt_fslabel); 1494100979Srwatson 1495101308Sjeff ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 1496100979Srwatson if (mac_cache_fslabel_in_vnode) 1497101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 1498100979Srwatson} 1499100979Srwatson 1500100979Srwatson/* 1501100979Srwatson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 1502100979Srwatson * to store label data. Can be referenced by filesystems supporting 1503100979Srwatson * extended attributes. 1504100979Srwatson */ 1505100979Srwatsonint 1506100979Srwatsonvop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 1507100979Srwatson{ 1508100979Srwatson struct vnode *vp = ap->a_vp; 1509100979Srwatson struct mac extmac; 1510100979Srwatson int buflen, error; 1511100979Srwatson 1512100979Srwatson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 1513100979Srwatson 1514100979Srwatson /* 1515100979Srwatson * Call out to external policies first. Order doesn't really 1516100979Srwatson * matter, as long as failure of one assures failure of all. 1517100979Srwatson */ 1518100979Srwatson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 1519100979Srwatson if (error) 1520100979Srwatson return (error); 1521100979Srwatson 1522100979Srwatson buflen = sizeof(extmac); 1523100979Srwatson error = vn_extattr_get(vp, IO_NODELOCKED, 1524100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 1525100979Srwatson (char *)&extmac, curthread); 1526100979Srwatson switch (error) { 1527100979Srwatson case 0: 1528100979Srwatson /* Got it */ 1529100979Srwatson break; 1530100979Srwatson 1531100979Srwatson case ENOATTR: 1532100979Srwatson /* 1533100979Srwatson * Use the label from the mount point. 1534100979Srwatson */ 1535100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1536100979Srwatson return (0); 1537100979Srwatson 1538100979Srwatson case EOPNOTSUPP: 1539100979Srwatson default: 1540100979Srwatson /* Fail horribly. */ 1541100979Srwatson return (error); 1542100979Srwatson } 1543100979Srwatson 1544100979Srwatson if (buflen != sizeof(extmac)) 1545100979Srwatson error = EPERM; /* Fail very closed. */ 1546100979Srwatson if (error == 0) 1547100979Srwatson error = mac_update_vnode_from_externalized(vp, &extmac); 1548100979Srwatson if (error == 0) 1549101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 1550100979Srwatson else { 1551100979Srwatson struct vattr va; 1552100979Srwatson 1553100979Srwatson printf("Corrupted label on %s", 1554100979Srwatson vp->v_mount->mnt_stat.f_mntonname); 1555100979Srwatson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 1556100979Srwatson printf(" inum %ld", va.va_fileid); 1557104268Srwatson#ifdef MAC_DEBUG 1558100979Srwatson if (mac_debug_label_fallback) { 1559100979Srwatson printf(", falling back.\n"); 1560100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1561100979Srwatson error = 0; 1562100979Srwatson } else { 1563104268Srwatson#endif 1564100979Srwatson printf(".\n"); 1565100979Srwatson error = EPERM; 1566104268Srwatson#ifdef MAC_DEBUG 1567100979Srwatson } 1568104268Srwatson#endif 1569100979Srwatson } 1570100979Srwatson 1571100979Srwatson return (error); 1572100979Srwatson} 1573100979Srwatson 1574100979Srwatson/* 1575100979Srwatson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 1576100979Srwatson * the labeling activity outselves. Filesystems should be careful not 1577100979Srwatson * to change their minds regarding whether they support vop_refreshlabel() 1578100979Srwatson * for a vnode or not. Don't cache the vnode here, allow the file 1579100979Srwatson * system code to determine if it's safe to cache. If we update from 1580100979Srwatson * the mount, don't cache since a change to the mount label should affect 1581100979Srwatson * all vnodes. 1582100979Srwatson */ 1583100979Srwatsonstatic int 1584100979Srwatsonvn_refreshlabel(struct vnode *vp, struct ucred *cred) 1585100979Srwatson{ 1586100979Srwatson int error; 1587100979Srwatson 1588100979Srwatson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 1589100979Srwatson 1590100979Srwatson if (vp->v_mount == NULL) { 1591100979Srwatson/* 1592100979Srwatson Eventually, we probably want to special-case refreshing 1593100979Srwatson of deadfs vnodes, and if there's a lock-free race somewhere, 1594100979Srwatson that case might be handled here. 1595100979Srwatson 1596100979Srwatson mac_update_vnode_deadfs(vp); 1597100979Srwatson return (0); 1598100979Srwatson */ 1599100979Srwatson /* printf("vn_refreshlabel: null v_mount\n"); */ 1600103314Snjl if (vp->v_type != VNON) 1601100979Srwatson printf( 1602103314Snjl "vn_refreshlabel: null v_mount with non-VNON\n"); 1603100979Srwatson return (EBADF); 1604100979Srwatson } 1605100979Srwatson 1606101308Sjeff if (vp->v_vflag & VV_CACHEDLABEL) { 1607100979Srwatson mac_vnode_label_cache_hits++; 1608100979Srwatson return (0); 1609100979Srwatson } else 1610100979Srwatson mac_vnode_label_cache_misses++; 1611100979Srwatson 1612100979Srwatson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 1613100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1614100979Srwatson return (0); 1615100979Srwatson } 1616100979Srwatson 1617100979Srwatson error = VOP_REFRESHLABEL(vp, cred, curthread); 1618100979Srwatson switch (error) { 1619100979Srwatson case EOPNOTSUPP: 1620100979Srwatson /* 1621100979Srwatson * If labels are not supported on this vnode, fall back to 1622100979Srwatson * the label in the mount and propagate it to the vnode. 1623100979Srwatson * There should probably be some sort of policy/flag/decision 1624100979Srwatson * about doing this. 1625100979Srwatson */ 1626100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1627100979Srwatson error = 0; 1628100979Srwatson default: 1629100979Srwatson return (error); 1630100979Srwatson } 1631100979Srwatson} 1632100979Srwatson 1633100979Srwatson/* 1634100979Srwatson * Helper function for file systems using the vop_std*_ea() calls. This 1635100979Srwatson * function must be called after EA service is available for the vnode, 1636100979Srwatson * but before it's hooked up to the namespace so that the node persists 1637100979Srwatson * if there's a crash, or before it can be accessed. On successful 1638100979Srwatson * commit of the label to disk (etc), do cache the label. 1639100979Srwatson */ 1640100979Srwatsonint 1641100979Srwatsonvop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 1642100979Srwatson{ 1643100979Srwatson struct mac extmac; 1644100979Srwatson int error; 1645100979Srwatson 1646101308Sjeff ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 1647100979Srwatson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 1648100979Srwatson mac_update_vnode_from_mount(tvp, tvp->v_mount); 1649100979Srwatson } else { 1650100979Srwatson error = vn_refreshlabel(dvp, cred); 1651100979Srwatson if (error) 1652100979Srwatson return (error); 1653100979Srwatson 1654100979Srwatson /* 1655100979Srwatson * Stick the label in the vnode. Then try to write to 1656100979Srwatson * disk. If we fail, return a failure to abort the 1657100979Srwatson * create operation. Really, this failure shouldn't 1658100979Srwatson * happen except in fairly unusual circumstances (out 1659100979Srwatson * of disk, etc). 1660100979Srwatson */ 1661100979Srwatson mac_create_vnode(cred, dvp, tvp); 1662100979Srwatson 1663100979Srwatson error = mac_stdcreatevnode_ea(tvp); 1664100979Srwatson if (error) 1665100979Srwatson return (error); 1666100979Srwatson 1667100979Srwatson /* 1668100979Srwatson * XXX: Eventually this will go away and all policies will 1669100979Srwatson * directly manage their extended attributes. 1670100979Srwatson */ 1671100979Srwatson error = mac_externalize(&tvp->v_label, &extmac); 1672100979Srwatson if (error) 1673100979Srwatson return (error); 1674100979Srwatson 1675100979Srwatson error = vn_extattr_set(tvp, IO_NODELOCKED, 1676100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 1677100979Srwatson sizeof(extmac), (char *)&extmac, curthread); 1678100979Srwatson if (error == 0) 1679101308Sjeff tvp->v_vflag |= VV_CACHEDLABEL; 1680100979Srwatson else { 1681100979Srwatson#if 0 1682100979Srwatson /* 1683100979Srwatson * In theory, we could have fall-back behavior here. 1684100979Srwatson * It would probably be incorrect. 1685100979Srwatson */ 1686100979Srwatson#endif 1687100979Srwatson return (error); 1688100979Srwatson } 1689100979Srwatson } 1690100979Srwatson 1691100979Srwatson return (0); 1692100979Srwatson} 1693100979Srwatson 1694100979Srwatsonvoid 1695100979Srwatsonmac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 1696100979Srwatson{ 1697100979Srwatson int error; 1698100979Srwatson 1699100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 1700100979Srwatson 1701100979Srwatson error = vn_refreshlabel(vp, old); 1702100979Srwatson if (error) { 1703100979Srwatson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 1704100979Srwatson error); 1705100979Srwatson printf("mac_execve_transition: using old vnode label\n"); 1706100979Srwatson } 1707100979Srwatson 1708100979Srwatson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 1709100979Srwatson} 1710100979Srwatson 1711100979Srwatsonint 1712100979Srwatsonmac_execve_will_transition(struct ucred *old, struct vnode *vp) 1713100979Srwatson{ 1714100979Srwatson int error, result; 1715100979Srwatson 1716100979Srwatson error = vn_refreshlabel(vp, old); 1717100979Srwatson if (error) 1718100979Srwatson return (error); 1719100979Srwatson 1720100979Srwatson result = 0; 1721100979Srwatson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 1722100979Srwatson 1723100979Srwatson return (result); 1724100979Srwatson} 1725100979Srwatson 1726100979Srwatsonint 1727100979Srwatsonmac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 1728100979Srwatson{ 1729100979Srwatson int error; 1730100979Srwatson 1731100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 1732100979Srwatson 1733100979Srwatson if (!mac_enforce_fs) 1734100979Srwatson return (0); 1735100979Srwatson 1736100979Srwatson error = vn_refreshlabel(vp, cred); 1737100979Srwatson if (error) 1738100979Srwatson return (error); 1739100979Srwatson 1740100979Srwatson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 1741100979Srwatson return (error); 1742100979Srwatson} 1743100979Srwatson 1744100979Srwatsonint 1745100979Srwatsonmac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 1746100979Srwatson{ 1747100979Srwatson int error; 1748100979Srwatson 1749100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 1750100979Srwatson 1751100979Srwatson if (!mac_enforce_fs) 1752100979Srwatson return (0); 1753100979Srwatson 1754100979Srwatson error = vn_refreshlabel(dvp, cred); 1755100979Srwatson if (error) 1756100979Srwatson return (error); 1757100979Srwatson 1758100979Srwatson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 1759100979Srwatson return (error); 1760100979Srwatson} 1761100979Srwatson 1762100979Srwatsonint 1763100979Srwatsonmac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 1764100979Srwatson{ 1765100979Srwatson int error; 1766100979Srwatson 1767100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 1768100979Srwatson 1769100979Srwatson if (!mac_enforce_fs) 1770100979Srwatson return (0); 1771100979Srwatson 1772100979Srwatson error = vn_refreshlabel(dvp, cred); 1773100979Srwatson if (error) 1774100979Srwatson return (error); 1775100979Srwatson 1776100979Srwatson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 1777100979Srwatson return (error); 1778100979Srwatson} 1779100979Srwatson 1780100979Srwatsonint 1781100979Srwatsonmac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 1782100979Srwatson struct componentname *cnp, struct vattr *vap) 1783100979Srwatson{ 1784100979Srwatson int error; 1785100979Srwatson 1786100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 1787100979Srwatson 1788100979Srwatson if (!mac_enforce_fs) 1789100979Srwatson return (0); 1790100979Srwatson 1791100979Srwatson error = vn_refreshlabel(dvp, cred); 1792100979Srwatson if (error) 1793100979Srwatson return (error); 1794100979Srwatson 1795100979Srwatson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 1796100979Srwatson return (error); 1797100979Srwatson} 1798100979Srwatson 1799100979Srwatsonint 1800100979Srwatsonmac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 1801100979Srwatson struct componentname *cnp) 1802100979Srwatson{ 1803100979Srwatson int error; 1804100979Srwatson 1805100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 1806100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 1807100979Srwatson 1808100979Srwatson if (!mac_enforce_fs) 1809100979Srwatson return (0); 1810100979Srwatson 1811100979Srwatson error = vn_refreshlabel(dvp, cred); 1812100979Srwatson if (error) 1813100979Srwatson return (error); 1814100979Srwatson error = vn_refreshlabel(vp, cred); 1815100979Srwatson if (error) 1816100979Srwatson return (error); 1817100979Srwatson 1818100979Srwatson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 1819100979Srwatson &vp->v_label, cnp); 1820100979Srwatson return (error); 1821100979Srwatson} 1822100979Srwatson 1823100979Srwatsonint 1824100979Srwatsonmac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 1825100979Srwatson acl_type_t type) 1826100979Srwatson{ 1827100979Srwatson int error; 1828100979Srwatson 1829100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 1830100979Srwatson 1831100979Srwatson if (!mac_enforce_fs) 1832100979Srwatson return (0); 1833100979Srwatson 1834100979Srwatson error = vn_refreshlabel(vp, cred); 1835100979Srwatson if (error) 1836100979Srwatson return (error); 1837100979Srwatson 1838100979Srwatson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 1839100979Srwatson return (error); 1840100979Srwatson} 1841100979Srwatson 1842100979Srwatsonint 1843100979Srwatsonmac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 1844100979Srwatson{ 1845100979Srwatson int error; 1846100979Srwatson 1847102102Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1848102102Srwatson 1849100979Srwatson if (!mac_enforce_process && !mac_enforce_fs) 1850100979Srwatson return (0); 1851100979Srwatson 1852100979Srwatson error = vn_refreshlabel(vp, cred); 1853100979Srwatson if (error) 1854100979Srwatson return (error); 1855100979Srwatson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 1856100979Srwatson 1857100979Srwatson return (error); 1858100979Srwatson} 1859100979Srwatson 1860100979Srwatsonint 1861100979Srwatsonmac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 1862100979Srwatson{ 1863100979Srwatson int error; 1864100979Srwatson 1865100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 1866100979Srwatson 1867100979Srwatson if (!mac_enforce_fs) 1868100979Srwatson return (0); 1869100979Srwatson 1870100979Srwatson error = vn_refreshlabel(vp, cred); 1871100979Srwatson if (error) 1872100979Srwatson return (error); 1873100979Srwatson 1874100979Srwatson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 1875100979Srwatson return (error); 1876100979Srwatson} 1877100979Srwatson 1878100979Srwatsonint 1879100979Srwatsonmac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 1880100979Srwatson int attrnamespace, const char *name, struct uio *uio) 1881100979Srwatson{ 1882100979Srwatson int error; 1883100979Srwatson 1884100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 1885100979Srwatson 1886100979Srwatson if (!mac_enforce_fs) 1887100979Srwatson return (0); 1888100979Srwatson 1889100979Srwatson error = vn_refreshlabel(vp, cred); 1890100979Srwatson if (error) 1891100979Srwatson return (error); 1892100979Srwatson 1893100979Srwatson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 1894100979Srwatson attrnamespace, name, uio); 1895100979Srwatson return (error); 1896100979Srwatson} 1897100979Srwatson 1898100979Srwatsonint 1899104529Srwatsonmac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 1900104529Srwatson struct vnode *vp, struct componentname *cnp) 1901104529Srwatson{ 1902104529Srwatson 1903104529Srwatson int error; 1904104529Srwatson 1905104529Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_link"); 1906104529Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_link"); 1907104529Srwatson 1908104529Srwatson if (!mac_enforce_fs) 1909104529Srwatson return (0); 1910104529Srwatson 1911104529Srwatson error = vn_refreshlabel(dvp, cred); 1912104529Srwatson if (error) 1913104529Srwatson return (error); 1914104529Srwatson 1915104529Srwatson error = vn_refreshlabel(vp, cred); 1916104529Srwatson if (error) 1917104529Srwatson return (error); 1918104529Srwatson 1919104529Srwatson MAC_CHECK(check_vnode_link, cred, dvp, &dvp->v_label, vp, 1920104529Srwatson &vp->v_label, cnp); 1921104529Srwatson return (error); 1922104529Srwatson} 1923104529Srwatson 1924104529Srwatsonint 1925100979Srwatsonmac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 1926100979Srwatson struct componentname *cnp) 1927100979Srwatson{ 1928100979Srwatson int error; 1929100979Srwatson 1930100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 1931100979Srwatson 1932100979Srwatson if (!mac_enforce_fs) 1933100979Srwatson return (0); 1934100979Srwatson 1935100979Srwatson error = vn_refreshlabel(dvp, cred); 1936100979Srwatson if (error) 1937100979Srwatson return (error); 1938100979Srwatson 1939100979Srwatson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 1940100979Srwatson return (error); 1941100979Srwatson} 1942100979Srwatson 1943100979Srwatsonvm_prot_t 1944100979Srwatsonmac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 1945100979Srwatson{ 1946100979Srwatson vm_prot_t result = VM_PROT_ALL; 1947100979Srwatson 1948103514Srwatson if (!mac_enforce_vm) 1949103514Srwatson return (result); 1950103514Srwatson 1951100979Srwatson /* 1952100979Srwatson * This should be some sort of MAC_BITWISE, maybe :) 1953100979Srwatson */ 1954100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 1955100979Srwatson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 1956100979Srwatson newmapping); 1957100979Srwatson return (result); 1958100979Srwatson} 1959100979Srwatson 1960100979Srwatsonint 1961102112Srwatsonmac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 1962100979Srwatson{ 1963100979Srwatson int error; 1964100979Srwatson 1965102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 1966102112Srwatson 1967100979Srwatson if (!mac_enforce_fs) 1968100979Srwatson return (0); 1969100979Srwatson 1970102112Srwatson error = vn_refreshlabel(vp, cred); 1971102112Srwatson if (error) 1972102112Srwatson return (error); 1973100979Srwatson 1974102112Srwatson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 1975102112Srwatson return (error); 1976102112Srwatson} 1977102112Srwatson 1978102112Srwatsonint 1979102129Srwatsonmac_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1980102129Srwatson struct vnode *vp) 1981102112Srwatson{ 1982102112Srwatson int error; 1983102112Srwatson 1984102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 1985102112Srwatson 1986102112Srwatson if (!mac_enforce_fs) 1987102112Srwatson return (0); 1988102112Srwatson 1989102129Srwatson error = vn_refreshlabel(vp, active_cred); 1990100979Srwatson if (error) 1991100979Srwatson return (error); 1992100979Srwatson 1993102129Srwatson MAC_CHECK(check_vnode_poll, active_cred, file_cred, vp, 1994102129Srwatson &vp->v_label); 1995100979Srwatson 1996100979Srwatson return (error); 1997100979Srwatson} 1998100979Srwatson 1999100979Srwatsonint 2000102129Srwatsonmac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 2001102129Srwatson struct vnode *vp) 2002100979Srwatson{ 2003100979Srwatson int error; 2004100979Srwatson 2005102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 2006100979Srwatson 2007100979Srwatson if (!mac_enforce_fs) 2008100979Srwatson return (0); 2009100979Srwatson 2010102129Srwatson error = vn_refreshlabel(vp, active_cred); 2011100979Srwatson if (error) 2012100979Srwatson return (error); 2013100979Srwatson 2014102129Srwatson MAC_CHECK(check_vnode_read, active_cred, file_cred, vp, 2015102129Srwatson &vp->v_label); 2016102112Srwatson 2017100979Srwatson return (error); 2018100979Srwatson} 2019100979Srwatson 2020100979Srwatsonint 2021100979Srwatsonmac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 2022100979Srwatson{ 2023100979Srwatson int error; 2024100979Srwatson 2025100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 2026100979Srwatson 2027100979Srwatson if (!mac_enforce_fs) 2028100979Srwatson return (0); 2029100979Srwatson 2030100979Srwatson error = vn_refreshlabel(dvp, cred); 2031100979Srwatson if (error) 2032100979Srwatson return (error); 2033100979Srwatson 2034100979Srwatson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 2035100979Srwatson return (error); 2036100979Srwatson} 2037100979Srwatson 2038100979Srwatsonint 2039100979Srwatsonmac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 2040100979Srwatson{ 2041100979Srwatson int error; 2042100979Srwatson 2043100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 2044100979Srwatson 2045100979Srwatson if (!mac_enforce_fs) 2046100979Srwatson return (0); 2047100979Srwatson 2048100979Srwatson error = vn_refreshlabel(vp, cred); 2049100979Srwatson if (error) 2050100979Srwatson return (error); 2051100979Srwatson 2052100979Srwatson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 2053100979Srwatson return (error); 2054100979Srwatson} 2055100979Srwatson 2056100979Srwatsonstatic int 2057100979Srwatsonmac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 2058100979Srwatson struct label *newlabel) 2059100979Srwatson{ 2060100979Srwatson int error; 2061100979Srwatson 2062100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 2063100979Srwatson 2064100979Srwatson error = vn_refreshlabel(vp, cred); 2065100979Srwatson if (error) 2066100979Srwatson return (error); 2067100979Srwatson 2068100979Srwatson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 2069100979Srwatson 2070100979Srwatson return (error); 2071100979Srwatson} 2072100979Srwatson 2073100979Srwatsonint 2074100979Srwatsonmac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 2075100979Srwatson struct vnode *vp, struct componentname *cnp) 2076100979Srwatson{ 2077100979Srwatson int error; 2078100979Srwatson 2079100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 2080100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 2081100979Srwatson 2082100979Srwatson if (!mac_enforce_fs) 2083100979Srwatson return (0); 2084100979Srwatson 2085100979Srwatson error = vn_refreshlabel(dvp, cred); 2086100979Srwatson if (error) 2087100979Srwatson return (error); 2088100979Srwatson error = vn_refreshlabel(vp, cred); 2089100979Srwatson if (error) 2090100979Srwatson return (error); 2091100979Srwatson 2092100979Srwatson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 2093100979Srwatson &vp->v_label, cnp); 2094100979Srwatson return (error); 2095100979Srwatson} 2096100979Srwatson 2097100979Srwatsonint 2098100979Srwatsonmac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 2099100979Srwatson struct vnode *vp, int samedir, struct componentname *cnp) 2100100979Srwatson{ 2101100979Srwatson int error; 2102100979Srwatson 2103100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 2104100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 2105100979Srwatson 2106100979Srwatson if (!mac_enforce_fs) 2107100979Srwatson return (0); 2108100979Srwatson 2109100979Srwatson error = vn_refreshlabel(dvp, cred); 2110100979Srwatson if (error) 2111100979Srwatson return (error); 2112100979Srwatson if (vp != NULL) { 2113100979Srwatson error = vn_refreshlabel(vp, cred); 2114100979Srwatson if (error) 2115100979Srwatson return (error); 2116100979Srwatson } 2117100979Srwatson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 2118100979Srwatson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 2119100979Srwatson return (error); 2120100979Srwatson} 2121100979Srwatson 2122100979Srwatsonint 2123100979Srwatsonmac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 2124100979Srwatson{ 2125100979Srwatson int error; 2126100979Srwatson 2127100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 2128100979Srwatson 2129100979Srwatson if (!mac_enforce_fs) 2130100979Srwatson return (0); 2131100979Srwatson 2132100979Srwatson error = vn_refreshlabel(vp, cred); 2133100979Srwatson if (error) 2134100979Srwatson return (error); 2135100979Srwatson 2136100979Srwatson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 2137100979Srwatson return (error); 2138100979Srwatson} 2139100979Srwatson 2140100979Srwatsonint 2141100979Srwatsonmac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 2142100979Srwatson struct acl *acl) 2143100979Srwatson{ 2144100979Srwatson int error; 2145100979Srwatson 2146100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 2147100979Srwatson 2148100979Srwatson if (!mac_enforce_fs) 2149100979Srwatson return (0); 2150100979Srwatson 2151100979Srwatson error = vn_refreshlabel(vp, cred); 2152100979Srwatson if (error) 2153100979Srwatson return (error); 2154100979Srwatson 2155100979Srwatson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 2156100979Srwatson return (error); 2157100979Srwatson} 2158100979Srwatson 2159100979Srwatsonint 2160100979Srwatsonmac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 2161100979Srwatson int attrnamespace, const char *name, struct uio *uio) 2162100979Srwatson{ 2163100979Srwatson int error; 2164100979Srwatson 2165100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 2166100979Srwatson 2167100979Srwatson if (!mac_enforce_fs) 2168100979Srwatson return (0); 2169100979Srwatson 2170100979Srwatson error = vn_refreshlabel(vp, cred); 2171100979Srwatson if (error) 2172100979Srwatson return (error); 2173100979Srwatson 2174100979Srwatson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 2175100979Srwatson attrnamespace, name, uio); 2176100979Srwatson return (error); 2177100979Srwatson} 2178100979Srwatson 2179100979Srwatsonint 2180100979Srwatsonmac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 2181100979Srwatson{ 2182100979Srwatson int error; 2183100979Srwatson 2184100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 2185100979Srwatson 2186100979Srwatson if (!mac_enforce_fs) 2187100979Srwatson return (0); 2188100979Srwatson 2189100979Srwatson error = vn_refreshlabel(vp, cred); 2190100979Srwatson if (error) 2191100979Srwatson return (error); 2192100979Srwatson 2193100979Srwatson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 2194100979Srwatson return (error); 2195100979Srwatson} 2196100979Srwatson 2197100979Srwatsonint 2198100979Srwatsonmac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 2199100979Srwatson{ 2200100979Srwatson int error; 2201100979Srwatson 2202100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 2203100979Srwatson 2204100979Srwatson if (!mac_enforce_fs) 2205100979Srwatson return (0); 2206100979Srwatson 2207100979Srwatson error = vn_refreshlabel(vp, cred); 2208100979Srwatson if (error) 2209100979Srwatson return (error); 2210100979Srwatson 2211100979Srwatson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 2212100979Srwatson return (error); 2213100979Srwatson} 2214100979Srwatson 2215100979Srwatsonint 2216100979Srwatsonmac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 2217100979Srwatson gid_t gid) 2218100979Srwatson{ 2219100979Srwatson int error; 2220100979Srwatson 2221100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 2222100979Srwatson 2223100979Srwatson if (!mac_enforce_fs) 2224100979Srwatson return (0); 2225100979Srwatson 2226100979Srwatson error = vn_refreshlabel(vp, cred); 2227100979Srwatson if (error) 2228100979Srwatson return (error); 2229100979Srwatson 2230100979Srwatson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 2231100979Srwatson return (error); 2232100979Srwatson} 2233100979Srwatson 2234100979Srwatsonint 2235100979Srwatsonmac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 2236100979Srwatson struct timespec atime, struct timespec mtime) 2237100979Srwatson{ 2238100979Srwatson int error; 2239100979Srwatson 2240100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 2241100979Srwatson 2242100979Srwatson if (!mac_enforce_fs) 2243100979Srwatson return (0); 2244100979Srwatson 2245100979Srwatson error = vn_refreshlabel(vp, cred); 2246100979Srwatson if (error) 2247100979Srwatson return (error); 2248100979Srwatson 2249100979Srwatson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 2250100979Srwatson mtime); 2251100979Srwatson return (error); 2252100979Srwatson} 2253100979Srwatson 2254100979Srwatsonint 2255102129Srwatsonmac_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 2256102129Srwatson struct vnode *vp) 2257100979Srwatson{ 2258100979Srwatson int error; 2259100979Srwatson 2260100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 2261100979Srwatson 2262100979Srwatson if (!mac_enforce_fs) 2263100979Srwatson return (0); 2264100979Srwatson 2265102129Srwatson error = vn_refreshlabel(vp, active_cred); 2266100979Srwatson if (error) 2267100979Srwatson return (error); 2268100979Srwatson 2269102129Srwatson MAC_CHECK(check_vnode_stat, active_cred, file_cred, vp, 2270102129Srwatson &vp->v_label); 2271100979Srwatson return (error); 2272100979Srwatson} 2273100979Srwatson 2274102112Srwatsonint 2275102129Srwatsonmac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred, 2276102129Srwatson struct vnode *vp) 2277102112Srwatson{ 2278102112Srwatson int error; 2279102112Srwatson 2280102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 2281102112Srwatson 2282102112Srwatson if (!mac_enforce_fs) 2283102112Srwatson return (0); 2284102112Srwatson 2285102129Srwatson error = vn_refreshlabel(vp, active_cred); 2286102112Srwatson if (error) 2287102112Srwatson return (error); 2288102112Srwatson 2289102129Srwatson MAC_CHECK(check_vnode_write, active_cred, file_cred, vp, 2290102129Srwatson &vp->v_label); 2291102112Srwatson 2292102112Srwatson return (error); 2293102112Srwatson} 2294102112Srwatson 2295100979Srwatson/* 2296100979Srwatson * When relabeling a process, call out to the policies for the maximum 2297100979Srwatson * permission allowed for each object type we know about in its 2298100979Srwatson * memory space, and revoke access (in the least surprising ways we 2299100979Srwatson * know) when necessary. The process lock is not held here. 2300100979Srwatson */ 2301100979Srwatsonstatic void 2302100979Srwatsonmac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 2303100979Srwatson{ 2304100979Srwatson 2305100979Srwatson /* XXX freeze all other threads */ 2306100979Srwatson mac_cred_mmapped_drop_perms_recurse(td, cred, 2307100979Srwatson &td->td_proc->p_vmspace->vm_map); 2308100979Srwatson /* XXX allow other threads to continue */ 2309100979Srwatson} 2310100979Srwatson 2311100979Srwatsonstatic __inline const char * 2312100979Srwatsonprot2str(vm_prot_t prot) 2313100979Srwatson{ 2314100979Srwatson 2315100979Srwatson switch (prot & VM_PROT_ALL) { 2316100979Srwatson case VM_PROT_READ: 2317100979Srwatson return ("r--"); 2318100979Srwatson case VM_PROT_READ | VM_PROT_WRITE: 2319100979Srwatson return ("rw-"); 2320100979Srwatson case VM_PROT_READ | VM_PROT_EXECUTE: 2321100979Srwatson return ("r-x"); 2322100979Srwatson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 2323100979Srwatson return ("rwx"); 2324100979Srwatson case VM_PROT_WRITE: 2325100979Srwatson return ("-w-"); 2326100979Srwatson case VM_PROT_EXECUTE: 2327100979Srwatson return ("--x"); 2328100979Srwatson case VM_PROT_WRITE | VM_PROT_EXECUTE: 2329100979Srwatson return ("-wx"); 2330100979Srwatson default: 2331100979Srwatson return ("---"); 2332100979Srwatson } 2333100979Srwatson} 2334100979Srwatson 2335100979Srwatsonstatic void 2336100979Srwatsonmac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 2337100979Srwatson struct vm_map *map) 2338100979Srwatson{ 2339100979Srwatson struct vm_map_entry *vme; 2340100979Srwatson vm_prot_t result, revokeperms; 2341100979Srwatson vm_object_t object; 2342100979Srwatson vm_ooffset_t offset; 2343100979Srwatson struct vnode *vp; 2344100979Srwatson 2345103136Srwatson if (!mac_mmap_revocation) 2346103136Srwatson return; 2347103136Srwatson 2348100979Srwatson vm_map_lock_read(map); 2349100979Srwatson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 2350100979Srwatson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 2351100979Srwatson mac_cred_mmapped_drop_perms_recurse(td, cred, 2352100979Srwatson vme->object.sub_map); 2353100979Srwatson continue; 2354100979Srwatson } 2355100979Srwatson /* 2356100979Srwatson * Skip over entries that obviously are not shared. 2357100979Srwatson */ 2358100979Srwatson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 2359100979Srwatson !vme->max_protection) 2360100979Srwatson continue; 2361100979Srwatson /* 2362100979Srwatson * Drill down to the deepest backing object. 2363100979Srwatson */ 2364100979Srwatson offset = vme->offset; 2365100979Srwatson object = vme->object.vm_object; 2366100979Srwatson if (object == NULL) 2367100979Srwatson continue; 2368100979Srwatson while (object->backing_object != NULL) { 2369100979Srwatson object = object->backing_object; 2370100979Srwatson offset += object->backing_object_offset; 2371100979Srwatson } 2372100979Srwatson /* 2373100979Srwatson * At the moment, vm_maps and objects aren't considered 2374100979Srwatson * by the MAC system, so only things with backing by a 2375100979Srwatson * normal object (read: vnodes) are checked. 2376100979Srwatson */ 2377100979Srwatson if (object->type != OBJT_VNODE) 2378100979Srwatson continue; 2379100979Srwatson vp = (struct vnode *)object->handle; 2380100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 2381100979Srwatson result = mac_check_vnode_mmap_prot(cred, vp, 0); 2382100979Srwatson VOP_UNLOCK(vp, 0, td); 2383100979Srwatson /* 2384100979Srwatson * Find out what maximum protection we may be allowing 2385100979Srwatson * now but a policy needs to get removed. 2386100979Srwatson */ 2387100979Srwatson revokeperms = vme->max_protection & ~result; 2388100979Srwatson if (!revokeperms) 2389100979Srwatson continue; 2390102949Sbde printf("pid %ld: revoking %s perms from %#lx:%ld " 2391102949Sbde "(max %s/cur %s)\n", (long)td->td_proc->p_pid, 2392102949Sbde prot2str(revokeperms), (u_long)vme->start, 2393102949Sbde (long)(vme->end - vme->start), 2394100979Srwatson prot2str(vme->max_protection), prot2str(vme->protection)); 2395100979Srwatson vm_map_lock_upgrade(map); 2396100979Srwatson /* 2397100979Srwatson * This is the really simple case: if a map has more 2398100979Srwatson * max_protection than is allowed, but it's not being 2399100979Srwatson * actually used (that is, the current protection is 2400100979Srwatson * still allowed), we can just wipe it out and do 2401100979Srwatson * nothing more. 2402100979Srwatson */ 2403100979Srwatson if ((vme->protection & revokeperms) == 0) { 2404100979Srwatson vme->max_protection -= revokeperms; 2405100979Srwatson } else { 2406100979Srwatson if (revokeperms & VM_PROT_WRITE) { 2407100979Srwatson /* 2408100979Srwatson * In the more complicated case, flush out all 2409100979Srwatson * pending changes to the object then turn it 2410100979Srwatson * copy-on-write. 2411100979Srwatson */ 2412100979Srwatson vm_object_reference(object); 2413100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 2414100979Srwatson vm_object_page_clean(object, 2415100979Srwatson OFF_TO_IDX(offset), 2416100979Srwatson OFF_TO_IDX(offset + vme->end - vme->start + 2417100979Srwatson PAGE_MASK), 2418100979Srwatson OBJPC_SYNC); 2419100979Srwatson VOP_UNLOCK(vp, 0, td); 2420100979Srwatson vm_object_deallocate(object); 2421100979Srwatson /* 2422100979Srwatson * Why bother if there's no read permissions 2423100979Srwatson * anymore? For the rest, we need to leave 2424100979Srwatson * the write permissions on for COW, or 2425100979Srwatson * remove them entirely if configured to. 2426100979Srwatson */ 2427100979Srwatson if (!mac_mmap_revocation_via_cow) { 2428100979Srwatson vme->max_protection &= ~VM_PROT_WRITE; 2429100979Srwatson vme->protection &= ~VM_PROT_WRITE; 2430100979Srwatson } if ((revokeperms & VM_PROT_READ) == 0) 2431100979Srwatson vme->eflags |= MAP_ENTRY_COW | 2432100979Srwatson MAP_ENTRY_NEEDS_COPY; 2433100979Srwatson } 2434100979Srwatson if (revokeperms & VM_PROT_EXECUTE) { 2435100979Srwatson vme->max_protection &= ~VM_PROT_EXECUTE; 2436100979Srwatson vme->protection &= ~VM_PROT_EXECUTE; 2437100979Srwatson } 2438100979Srwatson if (revokeperms & VM_PROT_READ) { 2439100979Srwatson vme->max_protection = 0; 2440100979Srwatson vme->protection = 0; 2441100979Srwatson } 2442100979Srwatson pmap_protect(map->pmap, vme->start, vme->end, 2443100979Srwatson vme->protection & ~revokeperms); 2444100979Srwatson vm_map_simplify_entry(map, vme); 2445100979Srwatson } 2446100979Srwatson vm_map_lock_downgrade(map); 2447100979Srwatson } 2448100979Srwatson vm_map_unlock_read(map); 2449100979Srwatson} 2450100979Srwatson 2451100979Srwatson/* 2452100979Srwatson * When the subject's label changes, it may require revocation of privilege 2453100979Srwatson * to mapped objects. This can't be done on-the-fly later with a unified 2454100979Srwatson * buffer cache. 2455100979Srwatson */ 2456100979Srwatsonstatic void 2457100979Srwatsonmac_relabel_cred(struct ucred *cred, struct label *newlabel) 2458100979Srwatson{ 2459100979Srwatson 2460100979Srwatson MAC_PERFORM(relabel_cred, cred, newlabel); 2461100979Srwatson} 2462100979Srwatson 2463100979Srwatsonvoid 2464100979Srwatsonmac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 2465100979Srwatson{ 2466100979Srwatson 2467100979Srwatson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 2468100979Srwatson} 2469100979Srwatson 2470100979Srwatsonvoid 2471100979Srwatsonmac_create_ifnet(struct ifnet *ifnet) 2472100979Srwatson{ 2473100979Srwatson 2474100979Srwatson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 2475100979Srwatson} 2476100979Srwatson 2477100979Srwatsonvoid 2478100979Srwatsonmac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 2479100979Srwatson{ 2480100979Srwatson 2481100979Srwatson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 2482100979Srwatson} 2483100979Srwatson 2484100979Srwatsonvoid 2485100979Srwatsonmac_create_socket(struct ucred *cred, struct socket *socket) 2486100979Srwatson{ 2487100979Srwatson 2488100979Srwatson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 2489100979Srwatson} 2490100979Srwatson 2491100979Srwatsonvoid 2492100979Srwatsonmac_create_pipe(struct ucred *cred, struct pipe *pipe) 2493100979Srwatson{ 2494100979Srwatson 2495100979Srwatson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 2496100979Srwatson} 2497100979Srwatson 2498100979Srwatsonvoid 2499100979Srwatsonmac_create_socket_from_socket(struct socket *oldsocket, 2500100979Srwatson struct socket *newsocket) 2501100979Srwatson{ 2502100979Srwatson 2503100979Srwatson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 2504100979Srwatson newsocket, &newsocket->so_label); 2505100979Srwatson} 2506100979Srwatson 2507100979Srwatsonstatic void 2508100979Srwatsonmac_relabel_socket(struct ucred *cred, struct socket *socket, 2509100979Srwatson struct label *newlabel) 2510100979Srwatson{ 2511100979Srwatson 2512100979Srwatson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 2513100979Srwatson} 2514100979Srwatson 2515100979Srwatsonstatic void 2516100979Srwatsonmac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 2517100979Srwatson{ 2518100979Srwatson 2519100979Srwatson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 2520100979Srwatson} 2521100979Srwatson 2522100979Srwatsonvoid 2523100979Srwatsonmac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 2524100979Srwatson{ 2525100979Srwatson 2526100979Srwatson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 2527100979Srwatson socket, &socket->so_peerlabel); 2528100979Srwatson} 2529100979Srwatson 2530100979Srwatsonvoid 2531100979Srwatsonmac_set_socket_peer_from_socket(struct socket *oldsocket, 2532100979Srwatson struct socket *newsocket) 2533100979Srwatson{ 2534100979Srwatson 2535100979Srwatson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 2536100979Srwatson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 2537100979Srwatson} 2538100979Srwatson 2539100979Srwatsonvoid 2540100979Srwatsonmac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 2541100979Srwatson{ 2542100979Srwatson 2543100979Srwatson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 2544100979Srwatson datagram, &datagram->m_pkthdr.label); 2545100979Srwatson} 2546100979Srwatson 2547100979Srwatsonvoid 2548100979Srwatsonmac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 2549100979Srwatson{ 2550100979Srwatson 2551100979Srwatson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 2552100979Srwatson fragment, &fragment->m_pkthdr.label); 2553100979Srwatson} 2554100979Srwatson 2555100979Srwatsonvoid 2556100979Srwatsonmac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 2557100979Srwatson{ 2558100979Srwatson 2559100979Srwatson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 2560100979Srwatson &ipq->ipq_label); 2561100979Srwatson} 2562100979Srwatson 2563100979Srwatsonvoid 2564100979Srwatsonmac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 2565100979Srwatson{ 2566100979Srwatson 2567100979Srwatson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 2568100979Srwatson newmbuf, &newmbuf->m_pkthdr.label); 2569100979Srwatson} 2570100979Srwatson 2571100979Srwatsonvoid 2572100979Srwatsonmac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 2573100979Srwatson{ 2574100979Srwatson 2575100979Srwatson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 2576100979Srwatson &mbuf->m_pkthdr.label); 2577100979Srwatson} 2578100979Srwatson 2579100979Srwatsonvoid 2580100979Srwatsonmac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 2581100979Srwatson{ 2582100979Srwatson 2583100979Srwatson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 2584100979Srwatson &mbuf->m_pkthdr.label); 2585100979Srwatson} 2586100979Srwatson 2587100979Srwatsonvoid 2588100979Srwatsonmac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 2589100979Srwatson{ 2590100979Srwatson 2591100979Srwatson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 2592100979Srwatson &mbuf->m_pkthdr.label); 2593100979Srwatson} 2594100979Srwatson 2595100979Srwatsonvoid 2596100979Srwatsonmac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 2597100979Srwatson struct mbuf *newmbuf) 2598100979Srwatson{ 2599100979Srwatson 2600100979Srwatson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 2601100979Srwatson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 2602100979Srwatson &newmbuf->m_pkthdr.label); 2603100979Srwatson} 2604100979Srwatson 2605100979Srwatsonvoid 2606100979Srwatsonmac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 2607100979Srwatson{ 2608100979Srwatson 2609100979Srwatson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 2610100979Srwatson newmbuf, &newmbuf->m_pkthdr.label); 2611100979Srwatson} 2612100979Srwatson 2613100979Srwatsonint 2614100979Srwatsonmac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 2615100979Srwatson{ 2616100979Srwatson int result; 2617100979Srwatson 2618100979Srwatson result = 1; 2619100979Srwatson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 2620100979Srwatson ipq, &ipq->ipq_label); 2621100979Srwatson 2622100979Srwatson return (result); 2623100979Srwatson} 2624100979Srwatson 2625100979Srwatsonvoid 2626100979Srwatsonmac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 2627100979Srwatson{ 2628100979Srwatson 2629100979Srwatson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 2630100979Srwatson &ipq->ipq_label); 2631100979Srwatson} 2632100979Srwatson 2633100979Srwatsonvoid 2634100979Srwatsonmac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 2635100979Srwatson{ 2636100979Srwatson 2637100979Srwatson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 2638100979Srwatson &mbuf->m_pkthdr.label); 2639100979Srwatson} 2640100979Srwatson 2641100979Srwatsonvoid 2642100979Srwatsonmac_create_mount(struct ucred *cred, struct mount *mp) 2643100979Srwatson{ 2644100979Srwatson 2645100979Srwatson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 2646100979Srwatson &mp->mnt_fslabel); 2647100979Srwatson} 2648100979Srwatson 2649100979Srwatsonvoid 2650100979Srwatsonmac_create_root_mount(struct ucred *cred, struct mount *mp) 2651100979Srwatson{ 2652100979Srwatson 2653100979Srwatson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 2654100979Srwatson &mp->mnt_fslabel); 2655100979Srwatson} 2656100979Srwatson 2657100979Srwatsonint 2658100979Srwatsonmac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 2659100979Srwatson{ 2660100979Srwatson int error; 2661100979Srwatson 2662100979Srwatson if (!mac_enforce_network) 2663100979Srwatson return (0); 2664100979Srwatson 2665100979Srwatson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 2666100979Srwatson &ifnet->if_label); 2667100979Srwatson 2668100979Srwatson return (error); 2669100979Srwatson} 2670100979Srwatson 2671100979Srwatsonstatic int 2672100979Srwatsonmac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 2673100979Srwatson{ 2674100979Srwatson int error; 2675100979Srwatson 2676100979Srwatson MAC_CHECK(check_cred_relabel, cred, newlabel); 2677100979Srwatson 2678100979Srwatson return (error); 2679100979Srwatson} 2680100979Srwatson 2681100979Srwatsonint 2682100979Srwatsonmac_check_cred_visible(struct ucred *u1, struct ucred *u2) 2683100979Srwatson{ 2684100979Srwatson int error; 2685100979Srwatson 2686100979Srwatson if (!mac_enforce_process) 2687100979Srwatson return (0); 2688100979Srwatson 2689100979Srwatson MAC_CHECK(check_cred_visible, u1, u2); 2690100979Srwatson 2691100979Srwatson return (error); 2692100979Srwatson} 2693100979Srwatson 2694100979Srwatsonint 2695100979Srwatsonmac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 2696100979Srwatson{ 2697100979Srwatson int error; 2698100979Srwatson 2699100979Srwatson if (!mac_enforce_network) 2700100979Srwatson return (0); 2701100979Srwatson 2702100979Srwatson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 2703100979Srwatson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 2704100979Srwatson printf("%s%d: not initialized\n", ifnet->if_name, 2705100979Srwatson ifnet->if_unit); 2706100979Srwatson 2707100979Srwatson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 2708100979Srwatson &mbuf->m_pkthdr.label); 2709100979Srwatson 2710100979Srwatson return (error); 2711100979Srwatson} 2712100979Srwatson 2713100979Srwatsonint 2714100979Srwatsonmac_check_mount_stat(struct ucred *cred, struct mount *mount) 2715100979Srwatson{ 2716100979Srwatson int error; 2717100979Srwatson 2718100979Srwatson if (!mac_enforce_fs) 2719100979Srwatson return (0); 2720100979Srwatson 2721100979Srwatson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 2722100979Srwatson 2723100979Srwatson return (error); 2724100979Srwatson} 2725100979Srwatson 2726100979Srwatsonint 2727100979Srwatsonmac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 2728100979Srwatson void *data) 2729100979Srwatson{ 2730100979Srwatson int error; 2731100979Srwatson 2732104269Srwatson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 2733104269Srwatson 2734104269Srwatson if (!mac_enforce_pipe) 2735104269Srwatson return (0); 2736104269Srwatson 2737100979Srwatson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 2738100979Srwatson 2739100979Srwatson return (error); 2740100979Srwatson} 2741100979Srwatson 2742100979Srwatsonint 2743102115Srwatsonmac_check_pipe_poll(struct ucred *cred, struct pipe *pipe) 2744100979Srwatson{ 2745100979Srwatson int error; 2746100979Srwatson 2747104269Srwatson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 2748104269Srwatson 2749104269Srwatson if (!mac_enforce_pipe) 2750104269Srwatson return (0); 2751104269Srwatson 2752102115Srwatson MAC_CHECK(check_pipe_poll, cred, pipe, pipe->pipe_label); 2753100979Srwatson 2754100979Srwatson return (error); 2755100979Srwatson} 2756100979Srwatson 2757102115Srwatsonint 2758102115Srwatsonmac_check_pipe_read(struct ucred *cred, struct pipe *pipe) 2759102115Srwatson{ 2760102115Srwatson int error; 2761102115Srwatson 2762104269Srwatson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 2763104269Srwatson 2764104269Srwatson if (!mac_enforce_pipe) 2765104269Srwatson return (0); 2766104269Srwatson 2767102115Srwatson MAC_CHECK(check_pipe_read, cred, pipe, pipe->pipe_label); 2768102115Srwatson 2769102115Srwatson return (error); 2770102115Srwatson} 2771102115Srwatson 2772100979Srwatsonstatic int 2773100979Srwatsonmac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 2774100979Srwatson struct label *newlabel) 2775100979Srwatson{ 2776100979Srwatson int error; 2777100979Srwatson 2778104269Srwatson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 2779104269Srwatson 2780104269Srwatson if (!mac_enforce_pipe) 2781104269Srwatson return (0); 2782104269Srwatson 2783100979Srwatson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 2784100979Srwatson 2785100979Srwatson return (error); 2786100979Srwatson} 2787100979Srwatson 2788100979Srwatsonint 2789102115Srwatsonmac_check_pipe_stat(struct ucred *cred, struct pipe *pipe) 2790102115Srwatson{ 2791102115Srwatson int error; 2792102115Srwatson 2793104269Srwatson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 2794104269Srwatson 2795104269Srwatson if (!mac_enforce_pipe) 2796104269Srwatson return (0); 2797104269Srwatson 2798102115Srwatson MAC_CHECK(check_pipe_stat, cred, pipe, pipe->pipe_label); 2799102115Srwatson 2800102115Srwatson return (error); 2801102115Srwatson} 2802102115Srwatson 2803102115Srwatsonint 2804102115Srwatsonmac_check_pipe_write(struct ucred *cred, struct pipe *pipe) 2805102115Srwatson{ 2806102115Srwatson int error; 2807102115Srwatson 2808104269Srwatson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 2809104269Srwatson 2810104269Srwatson if (!mac_enforce_pipe) 2811104269Srwatson return (0); 2812104269Srwatson 2813102115Srwatson MAC_CHECK(check_pipe_write, cred, pipe, pipe->pipe_label); 2814102115Srwatson 2815102115Srwatson return (error); 2816102115Srwatson} 2817102115Srwatson 2818102115Srwatsonint 2819100979Srwatsonmac_check_proc_debug(struct ucred *cred, struct proc *proc) 2820100979Srwatson{ 2821100979Srwatson int error; 2822100979Srwatson 2823102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2824102103Srwatson 2825100979Srwatson if (!mac_enforce_process) 2826100979Srwatson return (0); 2827100979Srwatson 2828100979Srwatson MAC_CHECK(check_proc_debug, cred, proc); 2829100979Srwatson 2830100979Srwatson return (error); 2831100979Srwatson} 2832100979Srwatson 2833100979Srwatsonint 2834100979Srwatsonmac_check_proc_sched(struct ucred *cred, struct proc *proc) 2835100979Srwatson{ 2836100979Srwatson int error; 2837100979Srwatson 2838102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2839102103Srwatson 2840100979Srwatson if (!mac_enforce_process) 2841100979Srwatson return (0); 2842100979Srwatson 2843100979Srwatson MAC_CHECK(check_proc_sched, cred, proc); 2844100979Srwatson 2845100979Srwatson return (error); 2846100979Srwatson} 2847100979Srwatson 2848100979Srwatsonint 2849100979Srwatsonmac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 2850100979Srwatson{ 2851100979Srwatson int error; 2852100979Srwatson 2853102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2854102103Srwatson 2855100979Srwatson if (!mac_enforce_process) 2856100979Srwatson return (0); 2857100979Srwatson 2858100979Srwatson MAC_CHECK(check_proc_signal, cred, proc, signum); 2859100979Srwatson 2860100979Srwatson return (error); 2861100979Srwatson} 2862100979Srwatson 2863100979Srwatsonint 2864100979Srwatsonmac_check_socket_bind(struct ucred *ucred, struct socket *socket, 2865100979Srwatson struct sockaddr *sockaddr) 2866100979Srwatson{ 2867100979Srwatson int error; 2868100979Srwatson 2869100979Srwatson if (!mac_enforce_socket) 2870100979Srwatson return (0); 2871100979Srwatson 2872100979Srwatson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 2873100979Srwatson sockaddr); 2874100979Srwatson 2875100979Srwatson return (error); 2876100979Srwatson} 2877100979Srwatson 2878100979Srwatsonint 2879100979Srwatsonmac_check_socket_connect(struct ucred *cred, struct socket *socket, 2880100979Srwatson struct sockaddr *sockaddr) 2881100979Srwatson{ 2882100979Srwatson int error; 2883100979Srwatson 2884100979Srwatson if (!mac_enforce_socket) 2885100979Srwatson return (0); 2886100979Srwatson 2887100979Srwatson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 2888100979Srwatson sockaddr); 2889100979Srwatson 2890100979Srwatson return (error); 2891100979Srwatson} 2892100979Srwatson 2893100979Srwatsonint 2894101933Srwatsonmac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2895100979Srwatson{ 2896100979Srwatson int error; 2897100979Srwatson 2898100979Srwatson if (!mac_enforce_socket) 2899100979Srwatson return (0); 2900100979Srwatson 2901101933Srwatson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2902101933Srwatson &mbuf->m_pkthdr.label); 2903101933Srwatson 2904100979Srwatson return (error); 2905100979Srwatson} 2906100979Srwatson 2907100979Srwatsonint 2908101933Srwatsonmac_check_socket_listen(struct ucred *cred, struct socket *socket) 2909100979Srwatson{ 2910100979Srwatson int error; 2911100979Srwatson 2912100979Srwatson if (!mac_enforce_socket) 2913100979Srwatson return (0); 2914100979Srwatson 2915101933Srwatson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 2916100979Srwatson return (error); 2917100979Srwatson} 2918100979Srwatson 2919100979Srwatsonstatic int 2920100979Srwatsonmac_check_socket_relabel(struct ucred *cred, struct socket *socket, 2921100979Srwatson struct label *newlabel) 2922100979Srwatson{ 2923100979Srwatson int error; 2924100979Srwatson 2925100979Srwatson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 2926100979Srwatson newlabel); 2927100979Srwatson 2928100979Srwatson return (error); 2929100979Srwatson} 2930100979Srwatson 2931100979Srwatsonint 2932100979Srwatsonmac_check_socket_visible(struct ucred *cred, struct socket *socket) 2933100979Srwatson{ 2934100979Srwatson int error; 2935100979Srwatson 2936100979Srwatson if (!mac_enforce_socket) 2937100979Srwatson return (0); 2938100979Srwatson 2939100979Srwatson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 2940100979Srwatson 2941100979Srwatson return (error); 2942100979Srwatson} 2943100979Srwatson 2944100979Srwatsonint 2945100979Srwatsonmac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 2946100979Srwatson struct ifnet *ifnet) 2947100979Srwatson{ 2948100979Srwatson struct mac label; 2949100979Srwatson int error; 2950100979Srwatson 2951100979Srwatson error = mac_externalize(&ifnet->if_label, &label); 2952100979Srwatson if (error) 2953100979Srwatson return (error); 2954100979Srwatson 2955100979Srwatson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 2956100979Srwatson} 2957100979Srwatson 2958100979Srwatsonint 2959100979Srwatsonmac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 2960100979Srwatson struct ifnet *ifnet) 2961100979Srwatson{ 2962100979Srwatson struct mac newlabel; 2963100979Srwatson struct label intlabel; 2964100979Srwatson int error; 2965100979Srwatson 2966100979Srwatson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 2967100979Srwatson if (error) 2968100979Srwatson return (error); 2969100979Srwatson 2970100979Srwatson error = mac_internalize(&intlabel, &newlabel); 2971100979Srwatson if (error) 2972100979Srwatson return (error); 2973100979Srwatson 2974100979Srwatson /* 2975100979Srwatson * XXX: Note that this is a redundant privilege check, since 2976100979Srwatson * policies impose this check themselves if required by the 2977100979Srwatson * policy. Eventually, this should go away. 2978100979Srwatson */ 2979100979Srwatson error = suser_cred(cred, 0); 2980100979Srwatson if (error) 2981100979Srwatson goto out; 2982100979Srwatson 2983100979Srwatson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 2984100979Srwatson &intlabel); 2985100979Srwatson if (error) 2986100979Srwatson goto out; 2987100979Srwatson 2988100979Srwatson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 2989100979Srwatson 2990100979Srwatsonout: 2991100979Srwatson mac_destroy_temp(&intlabel); 2992100979Srwatson return (error); 2993100979Srwatson} 2994100979Srwatson 2995100979Srwatsonvoid 2996100979Srwatsonmac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 2997100979Srwatson{ 2998100979Srwatson 2999100979Srwatson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 3000100979Srwatson} 3001100979Srwatson 3002100979Srwatsonvoid 3003100979Srwatsonmac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 3004100979Srwatson{ 3005100979Srwatson 3006100979Srwatson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 3007100979Srwatson} 3008100979Srwatson 3009104533Srwatsonvoid 3010104533Srwatsonmac_create_devfs_symlink(struct ucred *cred, struct devfs_dirent *dd, 3011104533Srwatson struct devfs_dirent *de) 3012104533Srwatson{ 3013104533Srwatson 3014104533Srwatson MAC_PERFORM(create_devfs_symlink, cred, dd, &dd->de_label, de, 3015104533Srwatson &de->de_label); 3016104533Srwatson} 3017104533Srwatson 3018100979Srwatsonstatic int 3019100979Srwatsonmac_stdcreatevnode_ea(struct vnode *vp) 3020100979Srwatson{ 3021100979Srwatson int error; 3022100979Srwatson 3023100979Srwatson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 3024100979Srwatson 3025100979Srwatson return (error); 3026100979Srwatson} 3027100979Srwatson 3028100979Srwatsonvoid 3029100979Srwatsonmac_create_devfs_directory(char *dirname, int dirnamelen, 3030100979Srwatson struct devfs_dirent *de) 3031100979Srwatson{ 3032100979Srwatson 3033100979Srwatson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 3034100979Srwatson &de->de_label); 3035100979Srwatson} 3036100979Srwatson 3037100979Srwatson/* 3038100979Srwatson * When a new vnode is created, this call will initialize its label. 3039100979Srwatson */ 3040100979Srwatsonvoid 3041100979Srwatsonmac_create_vnode(struct ucred *cred, struct vnode *parent, 3042100979Srwatson struct vnode *child) 3043100979Srwatson{ 3044100979Srwatson int error; 3045100979Srwatson 3046100979Srwatson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 3047100979Srwatson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 3048100979Srwatson 3049100979Srwatson error = vn_refreshlabel(parent, cred); 3050100979Srwatson if (error) { 3051100979Srwatson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 3052100979Srwatson error); 3053100979Srwatson printf("mac_create_vnode: using old vnode label\n"); 3054100979Srwatson } 3055100979Srwatson 3056100979Srwatson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 3057100979Srwatson &child->v_label); 3058100979Srwatson} 3059100979Srwatson 3060100979Srwatsonint 3061100979Srwatsonmac_setsockopt_label_set(struct ucred *cred, struct socket *so, 3062100979Srwatson struct mac *extmac) 3063100979Srwatson{ 3064100979Srwatson struct label intlabel; 3065100979Srwatson int error; 3066100979Srwatson 3067100979Srwatson error = mac_internalize(&intlabel, extmac); 3068100979Srwatson if (error) 3069100979Srwatson return (error); 3070100979Srwatson 3071100979Srwatson mac_check_socket_relabel(cred, so, &intlabel); 3072100979Srwatson if (error) { 3073100979Srwatson mac_destroy_temp(&intlabel); 3074100979Srwatson return (error); 3075100979Srwatson } 3076100979Srwatson 3077100979Srwatson mac_relabel_socket(cred, so, &intlabel); 3078100979Srwatson 3079100979Srwatson mac_destroy_temp(&intlabel); 3080100979Srwatson return (0); 3081100979Srwatson} 3082100979Srwatson 3083100979Srwatsonint 3084100979Srwatsonmac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 3085100979Srwatson{ 3086100979Srwatson int error; 3087100979Srwatson 3088104269Srwatson PIPE_LOCK_ASSERT(pipe, MA_OWNED); 3089104269Srwatson 3090100979Srwatson error = mac_check_pipe_relabel(cred, pipe, label); 3091100979Srwatson if (error) 3092100979Srwatson return (error); 3093100979Srwatson 3094100979Srwatson mac_relabel_pipe(cred, pipe, label); 3095100979Srwatson 3096100979Srwatson return (0); 3097100979Srwatson} 3098100979Srwatson 3099100979Srwatsonint 3100100979Srwatsonmac_getsockopt_label_get(struct ucred *cred, struct socket *so, 3101100979Srwatson struct mac *extmac) 3102100979Srwatson{ 3103100979Srwatson 3104100979Srwatson return (mac_externalize(&so->so_label, extmac)); 3105100979Srwatson} 3106100979Srwatson 3107100979Srwatsonint 3108100979Srwatsonmac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 3109100979Srwatson struct mac *extmac) 3110100979Srwatson{ 3111100979Srwatson 3112100979Srwatson return (mac_externalize(&so->so_peerlabel, extmac)); 3113100979Srwatson} 3114100979Srwatson 3115100979Srwatson/* 3116100979Srwatson * Implementation of VOP_SETLABEL() that relies on extended attributes 3117100979Srwatson * to store label data. Can be referenced by filesystems supporting 3118100979Srwatson * extended attributes. 3119100979Srwatson */ 3120100979Srwatsonint 3121100979Srwatsonvop_stdsetlabel_ea(struct vop_setlabel_args *ap) 3122100979Srwatson{ 3123100979Srwatson struct vnode *vp = ap->a_vp; 3124100979Srwatson struct label *intlabel = ap->a_label; 3125100979Srwatson struct mac extmac; 3126100979Srwatson int error; 3127100979Srwatson 3128100979Srwatson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 3129100979Srwatson 3130100979Srwatson /* 3131100979Srwatson * XXX: Eventually call out to EA check/set calls here. 3132100979Srwatson * Be particularly careful to avoid race conditions, 3133100979Srwatson * consistency problems, and stability problems when 3134100979Srwatson * dealing with multiple EAs. In particular, we require 3135100979Srwatson * the ability to write multiple EAs on the same file in 3136100979Srwatson * a single transaction, which the current EA interface 3137100979Srwatson * does not provide. 3138100979Srwatson */ 3139100979Srwatson 3140100979Srwatson error = mac_externalize(intlabel, &extmac); 3141100979Srwatson if (error) 3142100979Srwatson return (error); 3143100979Srwatson 3144100979Srwatson error = vn_extattr_set(vp, IO_NODELOCKED, 3145100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 3146100979Srwatson sizeof(extmac), (char *)&extmac, curthread); 3147100979Srwatson if (error) 3148100979Srwatson return (error); 3149100979Srwatson 3150100979Srwatson mac_relabel_vnode(ap->a_cred, vp, intlabel); 3151100979Srwatson 3152101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 3153100979Srwatson 3154100979Srwatson return (0); 3155100979Srwatson} 3156100979Srwatson 3157100979Srwatsonstatic int 3158100979Srwatsonvn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 3159100979Srwatson{ 3160100979Srwatson int error; 3161100979Srwatson 3162100979Srwatson if (vp->v_mount == NULL) { 3163100979Srwatson /* printf("vn_setlabel: null v_mount\n"); */ 3164103314Snjl if (vp->v_type != VNON) 3165103314Snjl printf("vn_setlabel: null v_mount with non-VNON\n"); 3166100979Srwatson return (EBADF); 3167100979Srwatson } 3168100979Srwatson 3169100979Srwatson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 3170100979Srwatson return (EOPNOTSUPP); 3171100979Srwatson 3172100979Srwatson /* 3173100979Srwatson * Multi-phase commit. First check the policies to confirm the 3174100979Srwatson * change is OK. Then commit via the filesystem. Finally, 3175100979Srwatson * update the actual vnode label. Question: maybe the filesystem 3176100979Srwatson * should update the vnode at the end as part of VOP_SETLABEL()? 3177100979Srwatson */ 3178100979Srwatson error = mac_check_vnode_relabel(cred, vp, intlabel); 3179100979Srwatson if (error) 3180100979Srwatson return (error); 3181100979Srwatson 3182100979Srwatson /* 3183100979Srwatson * VADMIN provides the opportunity for the filesystem to make 3184100979Srwatson * decisions about who is and is not able to modify labels 3185100979Srwatson * and protections on files. This might not be right. We can't 3186100979Srwatson * assume VOP_SETLABEL() will do it, because we might implement 3187100979Srwatson * that as part of vop_stdsetlabel_ea(). 3188100979Srwatson */ 3189100979Srwatson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 3190100979Srwatson if (error) 3191100979Srwatson return (error); 3192100979Srwatson 3193100979Srwatson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 3194100979Srwatson if (error) 3195100979Srwatson return (error); 3196100979Srwatson 3197100979Srwatson return (0); 3198100979Srwatson} 3199100979Srwatson 3200100979Srwatson/* 3201100979Srwatson * MPSAFE 3202100979Srwatson */ 3203100979Srwatsonint 3204100894Srwatson__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 3205100894Srwatson{ 3206100979Srwatson struct mac extmac; 3207100979Srwatson int error; 3208100894Srwatson 3209100979Srwatson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 3210100979Srwatson if (error == 0) 3211100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 3212100979Srwatson 3213100979Srwatson return (error); 3214100979Srwatson} 3215100979Srwatson 3216100979Srwatson/* 3217100979Srwatson * MPSAFE 3218100979Srwatson */ 3219100979Srwatsonint 3220100979Srwatson__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 3221100979Srwatson{ 3222100979Srwatson struct ucred *newcred, *oldcred; 3223100979Srwatson struct proc *p; 3224100979Srwatson struct mac extmac; 3225100979Srwatson struct label intlabel; 3226100979Srwatson int error; 3227100979Srwatson 3228100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 3229100979Srwatson if (error) 3230100979Srwatson return (error); 3231100979Srwatson 3232100979Srwatson error = mac_internalize(&intlabel, &extmac); 3233100979Srwatson if (error) 3234100979Srwatson return (error); 3235100979Srwatson 3236100979Srwatson newcred = crget(); 3237100979Srwatson 3238100979Srwatson p = td->td_proc; 3239100979Srwatson PROC_LOCK(p); 3240100979Srwatson oldcred = p->p_ucred; 3241100979Srwatson 3242100979Srwatson error = mac_check_cred_relabel(oldcred, &intlabel); 3243100979Srwatson if (error) { 3244100979Srwatson PROC_UNLOCK(p); 3245100979Srwatson mac_destroy_temp(&intlabel); 3246100979Srwatson crfree(newcred); 3247100979Srwatson return (error); 3248100979Srwatson } 3249100979Srwatson 3250100979Srwatson setsugid(p); 3251100979Srwatson crcopy(newcred, oldcred); 3252100979Srwatson mac_relabel_cred(newcred, &intlabel); 3253102136Srwatson p->p_ucred = newcred; 3254100979Srwatson 3255102136Srwatson /* 3256102136Srwatson * Grab additional reference for use while revoking mmaps, prior 3257102136Srwatson * to releasing the proc lock and sharing the cred. 3258102136Srwatson */ 3259102136Srwatson crhold(newcred); 3260100979Srwatson PROC_UNLOCK(p); 3261102136Srwatson 3262103135Srwatson mtx_lock(&Giant); 3263102136Srwatson mac_cred_mmapped_drop_perms(td, newcred); 3264103135Srwatson mtx_unlock(&Giant); 3265102136Srwatson 3266102136Srwatson crfree(newcred); /* Free revocation reference. */ 3267100979Srwatson crfree(oldcred); 3268100979Srwatson mac_destroy_temp(&intlabel); 3269100979Srwatson return (0); 3270100979Srwatson} 3271100979Srwatson 3272100979Srwatson/* 3273100979Srwatson * MPSAFE 3274100979Srwatson */ 3275100979Srwatsonint 3276100979Srwatson__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 3277100979Srwatson{ 3278100979Srwatson struct file *fp; 3279100979Srwatson struct mac extmac; 3280100979Srwatson struct vnode *vp; 3281100979Srwatson struct pipe *pipe; 3282100979Srwatson int error; 3283100979Srwatson 3284100979Srwatson mtx_lock(&Giant); 3285100979Srwatson 3286100979Srwatson error = fget(td, SCARG(uap, fd), &fp); 3287100979Srwatson if (error) 3288100979Srwatson goto out; 3289100979Srwatson 3290100979Srwatson switch (fp->f_type) { 3291100979Srwatson case DTYPE_FIFO: 3292100979Srwatson case DTYPE_VNODE: 3293100979Srwatson vp = (struct vnode *)fp->f_data; 3294100979Srwatson 3295100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 3296100979Srwatson error = vn_refreshlabel(vp, td->td_ucred); 3297100979Srwatson if (error == 0) 3298100979Srwatson error = mac_externalize(&vp->v_label, &extmac); 3299100979Srwatson VOP_UNLOCK(vp, 0, td); 3300100979Srwatson break; 3301100979Srwatson case DTYPE_PIPE: 3302100979Srwatson pipe = (struct pipe *)fp->f_data; 3303100979Srwatson error = mac_externalize(pipe->pipe_label, &extmac); 3304100979Srwatson break; 3305100979Srwatson default: 3306100979Srwatson error = EINVAL; 3307100979Srwatson } 3308100979Srwatson 3309100979Srwatson if (error == 0) 3310100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 3311100979Srwatson 3312100979Srwatson fdrop(fp, td); 3313100979Srwatson 3314100979Srwatsonout: 3315100979Srwatson mtx_unlock(&Giant); 3316100979Srwatson return (error); 3317100979Srwatson} 3318100979Srwatson 3319100979Srwatson/* 3320100979Srwatson * MPSAFE 3321100979Srwatson */ 3322100979Srwatsonint 3323100979Srwatson__mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 3324100979Srwatson{ 3325100979Srwatson struct nameidata nd; 3326100979Srwatson struct mac extmac; 3327100979Srwatson int error; 3328100979Srwatson 3329100979Srwatson mtx_lock(&Giant); 3330100979Srwatson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 3331100979Srwatson SCARG(uap, path_p), td); 3332100979Srwatson error = namei(&nd); 3333100979Srwatson if (error) 3334100979Srwatson goto out; 3335100979Srwatson 3336100979Srwatson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 3337100979Srwatson if (error == 0) 3338100979Srwatson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 3339100979Srwatson NDFREE(&nd, 0); 3340100979Srwatson if (error) 3341100979Srwatson goto out; 3342100979Srwatson 3343100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 3344100979Srwatson 3345100979Srwatsonout: 3346100979Srwatson mtx_unlock(&Giant); 3347100979Srwatson return (error); 3348100979Srwatson} 3349100979Srwatson 3350100979Srwatson/* 3351100979Srwatson * MPSAFE 3352100979Srwatson */ 3353100979Srwatsonint 3354100979Srwatson__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 3355100979Srwatson{ 3356100979Srwatson struct file *fp; 3357100979Srwatson struct mac extmac; 3358100979Srwatson struct label intlabel; 3359100979Srwatson struct mount *mp; 3360100979Srwatson struct vnode *vp; 3361100979Srwatson struct pipe *pipe; 3362100979Srwatson int error; 3363100979Srwatson 3364100979Srwatson mtx_lock(&Giant); 3365100979Srwatson error = fget(td, SCARG(uap, fd), &fp); 3366100979Srwatson if (error) 3367100979Srwatson goto out1; 3368100979Srwatson 3369100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 3370100979Srwatson if (error) 3371100979Srwatson goto out2; 3372100979Srwatson 3373100979Srwatson error = mac_internalize(&intlabel, &extmac); 3374100979Srwatson if (error) 3375100979Srwatson goto out2; 3376100979Srwatson 3377100979Srwatson switch (fp->f_type) { 3378100979Srwatson case DTYPE_FIFO: 3379100979Srwatson case DTYPE_VNODE: 3380100979Srwatson vp = (struct vnode *)fp->f_data; 3381100979Srwatson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 3382100979Srwatson if (error != 0) 3383100979Srwatson break; 3384100979Srwatson 3385100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 3386100979Srwatson error = vn_setlabel(vp, &intlabel, td->td_ucred); 3387100979Srwatson VOP_UNLOCK(vp, 0, td); 3388100979Srwatson vn_finished_write(mp); 3389100979Srwatson mac_destroy_temp(&intlabel); 3390100979Srwatson break; 3391100979Srwatson case DTYPE_PIPE: 3392100979Srwatson pipe = (struct pipe *)fp->f_data; 3393104269Srwatson PIPE_LOCK(pipe); 3394100979Srwatson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 3395104269Srwatson PIPE_UNLOCK(pipe); 3396100979Srwatson break; 3397100979Srwatson default: 3398100979Srwatson error = EINVAL; 3399100979Srwatson } 3400100979Srwatson 3401100979Srwatsonout2: 3402100979Srwatson fdrop(fp, td); 3403100979Srwatsonout1: 3404100979Srwatson mtx_unlock(&Giant); 3405100979Srwatson return (error); 3406100979Srwatson} 3407100979Srwatson 3408100979Srwatson/* 3409100979Srwatson * MPSAFE 3410100979Srwatson */ 3411100979Srwatsonint 3412100979Srwatson__mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 3413100979Srwatson{ 3414100979Srwatson struct nameidata nd; 3415100979Srwatson struct mac extmac; 3416100979Srwatson struct label intlabel; 3417100979Srwatson struct mount *mp; 3418100979Srwatson int error; 3419100979Srwatson 3420100979Srwatson mtx_lock(&Giant); 3421100979Srwatson 3422100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 3423100979Srwatson if (error) 3424100979Srwatson goto out; 3425100979Srwatson 3426100979Srwatson error = mac_internalize(&intlabel, &extmac); 3427100979Srwatson if (error) 3428100979Srwatson goto out; 3429100979Srwatson 3430100979Srwatson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 3431100979Srwatson SCARG(uap, path_p), td); 3432100979Srwatson error = namei(&nd); 3433100979Srwatson if (error) 3434100979Srwatson goto out2; 3435100979Srwatson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 3436100979Srwatson if (error) 3437100979Srwatson goto out2; 3438100979Srwatson 3439100979Srwatson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 3440100979Srwatson 3441100979Srwatson vn_finished_write(mp); 3442100979Srwatsonout2: 3443100979Srwatson mac_destroy_temp(&intlabel); 3444100979Srwatson NDFREE(&nd, 0); 3445100979Srwatsonout: 3446100979Srwatson mtx_unlock(&Giant); 3447100979Srwatson return (error); 3448100979Srwatson} 3449100979Srwatson 3450102123Srwatsonint 3451102123Srwatsonmac_syscall(struct thread *td, struct mac_syscall_args *uap) 3452102123Srwatson{ 3453102123Srwatson struct mac_policy_conf *mpc; 3454102123Srwatson char target[MAC_MAX_POLICY_NAME]; 3455102123Srwatson int error; 3456102123Srwatson 3457102123Srwatson error = copyinstr(SCARG(uap, policy), target, sizeof(target), NULL); 3458102123Srwatson if (error) 3459102123Srwatson return (error); 3460102123Srwatson 3461102123Srwatson error = ENOSYS; 3462102123Srwatson MAC_POLICY_LIST_BUSY(); 3463102123Srwatson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { 3464102123Srwatson if (strcmp(mpc->mpc_name, target) == 0 && 3465102123Srwatson mpc->mpc_ops->mpo_syscall != NULL) { 3466102123Srwatson error = mpc->mpc_ops->mpo_syscall(td, 3467102123Srwatson SCARG(uap, call), SCARG(uap, arg)); 3468102123Srwatson goto out; 3469102123Srwatson } 3470102123Srwatson } 3471102123Srwatson 3472102123Srwatsonout: 3473102123Srwatson MAC_POLICY_LIST_UNBUSY(); 3474102123Srwatson return (error); 3475102123Srwatson} 3476102123Srwatson 3477100979SrwatsonSYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 3478100979SrwatsonSYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 3479100979Srwatson 3480100979Srwatson#else /* !MAC */ 3481100979Srwatson 3482100979Srwatsonint 3483100979Srwatson__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 3484100979Srwatson{ 3485100979Srwatson 3486100894Srwatson return (ENOSYS); 3487100894Srwatson} 3488100894Srwatson 3489100894Srwatsonint 3490100894Srwatson__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 3491100894Srwatson{ 3492100894Srwatson 3493100894Srwatson return (ENOSYS); 3494100894Srwatson} 3495100894Srwatson 3496100894Srwatsonint 3497100894Srwatson__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 3498100894Srwatson{ 3499100894Srwatson 3500100894Srwatson return (ENOSYS); 3501100894Srwatson} 3502100894Srwatson 3503100894Srwatsonint 3504100894Srwatson__mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 3505100894Srwatson{ 3506100894Srwatson 3507100894Srwatson return (ENOSYS); 3508100894Srwatson} 3509100894Srwatson 3510100894Srwatsonint 3511100894Srwatson__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 3512100894Srwatson{ 3513100894Srwatson 3514100894Srwatson return (ENOSYS); 3515100894Srwatson} 3516100894Srwatson 3517100894Srwatsonint 3518100894Srwatson__mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 3519100894Srwatson{ 3520100894Srwatson 3521100894Srwatson return (ENOSYS); 3522100894Srwatson} 3523100979Srwatson 3524102123Srwatsonint 3525102123Srwatsonmac_syscall(struct thread *td, struct mac_syscall_args *uap) 3526102123Srwatson{ 3527102123Srwatson 3528102123Srwatson return (ENOSYS); 3529102123Srwatson} 3530102123Srwatson 3531100979Srwatson#endif /* !MAC */ 3532