mac_process.c revision 102112
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 102112 2002-08-19 16:43:25Z 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" 49101173Srwatson 50100894Srwatson#include <sys/param.h> 51100979Srwatson#include <sys/extattr.h> 52100979Srwatson#include <sys/kernel.h> 53100979Srwatson#include <sys/lock.h> 54100979Srwatson#include <sys/mutex.h> 55100979Srwatson#include <sys/sx.h> 56100979Srwatson#include <sys/mac.h> 57101712Srwatson#include <sys/module.h> 58100979Srwatson#include <sys/proc.h> 59100979Srwatson#include <sys/systm.h> 60100894Srwatson#include <sys/sysproto.h> 61100894Srwatson#include <sys/sysent.h> 62100979Srwatson#include <sys/vnode.h> 63100979Srwatson#include <sys/mount.h> 64100979Srwatson#include <sys/file.h> 65100979Srwatson#include <sys/namei.h> 66100979Srwatson#include <sys/socket.h> 67100979Srwatson#include <sys/pipe.h> 68100979Srwatson#include <sys/socketvar.h> 69100979Srwatson#include <sys/sx.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/bpf.h> 82100979Srwatson#include <net/bpfdesc.h> 83100979Srwatson#include <net/if.h> 84100979Srwatson#include <net/if_var.h> 85100979Srwatson 86100979Srwatson#include <netinet/in.h> 87100979Srwatson#include <netinet/ip_var.h> 88100979Srwatson 89100979Srwatson#ifdef MAC 90100979Srwatson 91101712Srwatson/* 92101712Srwatson * Declare that the kernel provides MAC support, version 1. This permits 93101712Srwatson * modules to refuse to be loaded if the necessary support isn't present, 94101712Srwatson * even if it's pre-boot. 95101712Srwatson */ 96101712SrwatsonMODULE_VERSION(kernel_mac_support, 1); 97101712Srwatson 98100979SrwatsonSYSCTL_DECL(_security); 99100979Srwatson 100100979SrwatsonSYSCTL_NODE(_security, OID_AUTO, mac, CTLFLAG_RW, 0, 101100979Srwatson "TrustedBSD MAC policy controls"); 102100979SrwatsonSYSCTL_NODE(_security_mac, OID_AUTO, debug, CTLFLAG_RW, 0, 103100979Srwatson "TrustedBSD MAC debug info"); 104100979Srwatson 105100979Srwatsonstatic int mac_debug_label_fallback = 0; 106100979SrwatsonSYSCTL_INT(_security_mac_debug, OID_AUTO, label_fallback, CTLFLAG_RW, 107100979Srwatson &mac_debug_label_fallback, 0, "Filesystems should fall back to fs label" 108100979Srwatson "when label is corrupted."); 109100979SrwatsonTUNABLE_INT("security.mac.debug_label_fallback", 110100979Srwatson &mac_debug_label_fallback); 111100979Srwatson 112100979Srwatson#ifndef MAC_MAX_POLICIES 113100979Srwatson#define MAC_MAX_POLICIES 8 114100979Srwatson#endif 115100979Srwatson#if MAC_MAX_POLICIES > 32 116100979Srwatson#error "MAC_MAX_POLICIES too large" 117100979Srwatson#endif 118100979Srwatsonstatic unsigned int mac_max_policies = MAC_MAX_POLICIES; 119100979Srwatsonstatic unsigned int mac_policy_offsets_free = (1 << MAC_MAX_POLICIES) - 1; 120100979SrwatsonSYSCTL_UINT(_security_mac, OID_AUTO, max_policies, CTLFLAG_RD, 121100979Srwatson &mac_max_policies, 0, ""); 122100979Srwatson 123100979Srwatsonstatic int mac_late = 0; 124100979Srwatson 125100979Srwatsonstatic int mac_enforce_fs = 1; 126100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_fs, CTLFLAG_RW, 127100979Srwatson &mac_enforce_fs, 0, "Enforce MAC policy on file system objects"); 128100979SrwatsonTUNABLE_INT("security.mac.enforce_fs", &mac_enforce_fs); 129100979Srwatson 130100979Srwatsonstatic int mac_enforce_network = 1; 131100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW, 132100979Srwatson &mac_enforce_network, 0, "Enforce MAC policy on network packets"); 133100979SrwatsonTUNABLE_INT("security.mac.enforce_network", &mac_enforce_network); 134100979Srwatson 135100979Srwatsonstatic int mac_enforce_process = 1; 136100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_process, CTLFLAG_RW, 137100979Srwatson &mac_enforce_process, 0, "Enforce MAC policy on inter-process operations"); 138100979SrwatsonTUNABLE_INT("security.mac.enforce_process", &mac_enforce_process); 139100979Srwatson 140100979Srwatsonstatic int mac_enforce_socket = 1; 141100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW, 142100979Srwatson &mac_enforce_socket, 0, "Enforce MAC policy on socket operations"); 143100979SrwatsonTUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket); 144100979Srwatson 145100979Srwatsonstatic int mac_enforce_pipe = 1; 146100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, enforce_pipe, CTLFLAG_RW, 147100979Srwatson &mac_enforce_pipe, 0, "Enforce MAC policy on pipe operations"); 148100979Srwatson 149100979Srwatsonstatic int mac_label_size = sizeof(struct mac); 150100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, label_size, CTLFLAG_RD, 151100979Srwatson &mac_label_size, 0, "Pre-compiled MAC label size"); 152100979Srwatson 153100979Srwatsonstatic int mac_cache_fslabel_in_vnode = 1; 154100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, cache_fslabel_in_vnode, CTLFLAG_RW, 155100979Srwatson &mac_cache_fslabel_in_vnode, 0, "Cache mount fslabel in vnode"); 156100979SrwatsonTUNABLE_INT("security.mac.cache_fslabel_in_vnode", 157100979Srwatson &mac_cache_fslabel_in_vnode); 158100979Srwatson 159100979Srwatsonstatic int mac_vnode_label_cache_hits = 0; 160100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_hits, CTLFLAG_RD, 161100979Srwatson &mac_vnode_label_cache_hits, 0, "Cache hits on vnode labels"); 162100979Srwatsonstatic int mac_vnode_label_cache_misses = 0; 163100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD, 164100979Srwatson &mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels"); 165101892Srwatsonstatic int mac_mmap_revocation_via_cow = 0; 166100979SrwatsonSYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW, 167100979Srwatson &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via " 168100979Srwatson "copy-on-write semantics, or by removing all write access"); 169100979Srwatson 170101988Srwatson#ifdef MAC_DEBUG 171100979Srwatsonstatic unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs, 172100979Srwatson nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents, 173100979Srwatson nmacipqs, nmacpipes; 174100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, mbufs, CTLFLAG_RD, 175100979Srwatson &nmacmbufs, 0, "number of mbufs in use"); 176100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, creds, CTLFLAG_RD, 177100979Srwatson &nmaccreds, 0, "number of ucreds in use"); 178100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, ifnets, CTLFLAG_RD, 179100979Srwatson &nmacifnets, 0, "number of ifnets in use"); 180100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, ipqs, CTLFLAG_RD, 181100979Srwatson &nmacipqs, 0, "number of ipqs in use"); 182100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, bpfdescs, CTLFLAG_RD, 183100979Srwatson &nmacbpfdescs, 0, "number of bpfdescs in use"); 184100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, sockets, CTLFLAG_RD, 185100979Srwatson &nmacsockets, 0, "number of sockets in use"); 186100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, pipes, CTLFLAG_RD, 187100979Srwatson &nmacpipes, 0, "number of pipes in use"); 188100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, mounts, CTLFLAG_RD, 189100979Srwatson &nmacmounts, 0, "number of mounts in use"); 190100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, temp, CTLFLAG_RD, 191100979Srwatson &nmactemp, 0, "number of temporary labels in use"); 192100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, vnodes, CTLFLAG_RD, 193100979Srwatson &nmacvnodes, 0, "number of vnodes in use"); 194100979SrwatsonSYSCTL_UINT(_security_mac_debug, OID_AUTO, devfsdirents, CTLFLAG_RD, 195100979Srwatson &nmacdevfsdirents, 0, "number of devfs dirents inuse"); 196101988Srwatson#endif 197100979Srwatson 198100979Srwatsonstatic int error_select(int error1, int error2); 199100979Srwatsonstatic int mac_externalize(struct label *label, struct mac *mac); 200100979Srwatsonstatic int mac_policy_register(struct mac_policy_conf *mpc); 201100979Srwatsonstatic int mac_policy_unregister(struct mac_policy_conf *mpc); 202100979Srwatson 203100979Srwatsonstatic int mac_stdcreatevnode_ea(struct vnode *vp); 204100979Srwatsonstatic void mac_cred_mmapped_drop_perms(struct thread *td, 205100979Srwatson struct ucred *cred); 206100979Srwatsonstatic void mac_cred_mmapped_drop_perms_recurse(struct thread *td, 207100979Srwatson struct ucred *cred, struct vm_map *map); 208100979Srwatson 209100979SrwatsonMALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 210100979SrwatsonMALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 211100979Srwatson 212100979Srwatson/* 213100979Srwatson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 214100979Srwatson * the linked list of attached policy modules. Read-only consumers of 215100979Srwatson * the list must acquire a shared lock for the duration of their use; 216100979Srwatson * writers must acquire an exclusive lock. Note that for compound 217100979Srwatson * operations, locks should be held for the entire compound operation, 218100979Srwatson * and that this is not yet done for relabel requests. 219100979Srwatson */ 220100979Srwatsonstatic struct mtx mac_policy_list_lock; 221100979Srwatsonstatic LIST_HEAD(, mac_policy_conf) mac_policy_list; 222100979Srwatsonstatic int mac_policy_list_busy; 223100979Srwatson#define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 224100979Srwatson "mac_policy_list_lock", NULL, MTX_DEF); 225100979Srwatson#define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 226100979Srwatson#define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 227100979Srwatson 228100979Srwatson#define MAC_POLICY_LIST_BUSY() do { \ 229100979Srwatson MAC_POLICY_LIST_LOCK(); \ 230100979Srwatson mac_policy_list_busy++; \ 231100979Srwatson MAC_POLICY_LIST_UNLOCK(); \ 232100979Srwatson} while (0) 233100979Srwatson 234100979Srwatson#define MAC_POLICY_LIST_UNBUSY() do { \ 235100979Srwatson MAC_POLICY_LIST_LOCK(); \ 236100979Srwatson mac_policy_list_busy--; \ 237100979Srwatson if (mac_policy_list_busy < 0) \ 238100979Srwatson panic("Extra mac_policy_list_busy--"); \ 239100979Srwatson MAC_POLICY_LIST_UNLOCK(); \ 240100979Srwatson} while (0) 241100979Srwatson 242100979Srwatson/* 243100979Srwatson * MAC_CHECK performs the designated check by walking the policy 244100979Srwatson * module list and checking with each as to how it feels about the 245100979Srwatson * request. Note that it returns its value via 'error' in the scope 246100979Srwatson * of the caller. 247100979Srwatson */ 248100979Srwatson#define MAC_CHECK(check, args...) do { \ 249100979Srwatson struct mac_policy_conf *mpc; \ 250100979Srwatson \ 251100979Srwatson error = 0; \ 252100979Srwatson MAC_POLICY_LIST_BUSY(); \ 253100979Srwatson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 254100979Srwatson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 255100979Srwatson error = error_select( \ 256100979Srwatson mpc->mpc_ops->mpo_ ## check (args), \ 257100979Srwatson error); \ 258100979Srwatson } \ 259100979Srwatson MAC_POLICY_LIST_UNBUSY(); \ 260100979Srwatson} while (0) 261100979Srwatson 262100979Srwatson/* 263100979Srwatson * MAC_BOOLEAN performs the designated boolean composition by walking 264100979Srwatson * the module list, invoking each instance of the operation, and 265100979Srwatson * combining the results using the passed C operator. Note that it 266100979Srwatson * returns its value via 'result' in the scope of the caller, which 267100979Srwatson * should be initialized by the caller in a meaningful way to get 268100979Srwatson * a meaningful result. 269100979Srwatson */ 270100979Srwatson#define MAC_BOOLEAN(operation, composition, args...) do { \ 271100979Srwatson struct mac_policy_conf *mpc; \ 272100979Srwatson \ 273100979Srwatson MAC_POLICY_LIST_BUSY(); \ 274100979Srwatson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 275100979Srwatson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 276100979Srwatson result = result composition \ 277100979Srwatson mpc->mpc_ops->mpo_ ## operation (args); \ 278100979Srwatson } \ 279100979Srwatson MAC_POLICY_LIST_UNBUSY(); \ 280100979Srwatson} while (0) 281100979Srwatson 282100979Srwatson/* 283100979Srwatson * MAC_PERFORM performs the designated operation by walking the policy 284100979Srwatson * module list and invoking that operation for each policy. 285100979Srwatson */ 286100979Srwatson#define MAC_PERFORM(operation, args...) do { \ 287100979Srwatson struct mac_policy_conf *mpc; \ 288100979Srwatson \ 289100979Srwatson MAC_POLICY_LIST_BUSY(); \ 290100979Srwatson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 291100979Srwatson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 292100979Srwatson mpc->mpc_ops->mpo_ ## operation (args); \ 293100979Srwatson } \ 294100979Srwatson MAC_POLICY_LIST_UNBUSY(); \ 295100979Srwatson} while (0) 296100979Srwatson 297100979Srwatson/* 298100979Srwatson * Initialize the MAC subsystem, including appropriate SMP locks. 299100979Srwatson */ 300100979Srwatsonstatic void 301100979Srwatsonmac_init(void) 302100979Srwatson{ 303100979Srwatson 304100979Srwatson LIST_INIT(&mac_policy_list); 305100979Srwatson MAC_POLICY_LIST_LOCKINIT(); 306100979Srwatson} 307100979Srwatson 308100979Srwatson/* 309100979Srwatson * For the purposes of modules that want to know if they were loaded 310100979Srwatson * "early", set the mac_late flag once we've processed modules either 311100979Srwatson * linked into the kernel, or loaded before the kernel startup. 312100979Srwatson */ 313100979Srwatsonstatic void 314100979Srwatsonmac_late_init(void) 315100979Srwatson{ 316100979Srwatson 317100979Srwatson mac_late = 1; 318100979Srwatson} 319100979Srwatson 320100979Srwatson/* 321100979Srwatson * Allow MAC policy modules to register during boot, etc. 322100979Srwatson */ 323100894Srwatsonint 324100979Srwatsonmac_policy_modevent(module_t mod, int type, void *data) 325100979Srwatson{ 326100979Srwatson struct mac_policy_conf *mpc; 327100979Srwatson int error; 328100979Srwatson 329100979Srwatson error = 0; 330100979Srwatson mpc = (struct mac_policy_conf *) data; 331100979Srwatson 332100979Srwatson switch (type) { 333100979Srwatson case MOD_LOAD: 334100979Srwatson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 335100979Srwatson mac_late) { 336100979Srwatson printf("mac_policy_modevent: can't load %s policy " 337100979Srwatson "after booting\n", mpc->mpc_name); 338100979Srwatson error = EBUSY; 339100979Srwatson break; 340100979Srwatson } 341100979Srwatson error = mac_policy_register(mpc); 342100979Srwatson break; 343100979Srwatson case MOD_UNLOAD: 344100979Srwatson /* Don't unregister the module if it was never registered. */ 345100979Srwatson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 346100979Srwatson != 0) 347100979Srwatson error = mac_policy_unregister(mpc); 348100979Srwatson else 349100979Srwatson error = 0; 350100979Srwatson break; 351100979Srwatson default: 352100979Srwatson break; 353100979Srwatson } 354100979Srwatson 355100979Srwatson return (error); 356100979Srwatson} 357100979Srwatson 358100979Srwatsonstatic int 359100979Srwatsonmac_policy_register(struct mac_policy_conf *mpc) 360100979Srwatson{ 361100979Srwatson struct mac_policy_conf *tmpc; 362100979Srwatson struct mac_policy_ops *ops; 363100979Srwatson struct mac_policy_op_entry *mpe; 364100979Srwatson int slot; 365100979Srwatson 366100979Srwatson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*ops), M_MACOPVEC, 367100979Srwatson M_WAITOK | M_ZERO); 368100979Srwatson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 369100979Srwatson switch (mpe->mpe_constant) { 370100979Srwatson case MAC_OP_LAST: 371100979Srwatson /* 372100979Srwatson * Doesn't actually happen, but this allows checking 373100979Srwatson * that all enumerated values are handled. 374100979Srwatson */ 375100979Srwatson break; 376100979Srwatson case MAC_DESTROY: 377100979Srwatson mpc->mpc_ops->mpo_destroy = 378100979Srwatson mpe->mpe_function; 379100979Srwatson break; 380100979Srwatson case MAC_INIT: 381100979Srwatson mpc->mpc_ops->mpo_init = 382100979Srwatson mpe->mpe_function; 383100979Srwatson break; 384100979Srwatson case MAC_INIT_BPFDESC: 385100979Srwatson mpc->mpc_ops->mpo_init_bpfdesc = 386100979Srwatson mpe->mpe_function; 387100979Srwatson break; 388100979Srwatson case MAC_INIT_CRED: 389100979Srwatson mpc->mpc_ops->mpo_init_cred = 390100979Srwatson mpe->mpe_function; 391100979Srwatson break; 392100979Srwatson case MAC_INIT_DEVFSDIRENT: 393100979Srwatson mpc->mpc_ops->mpo_init_devfsdirent = 394100979Srwatson mpe->mpe_function; 395100979Srwatson break; 396100979Srwatson case MAC_INIT_IFNET: 397100979Srwatson mpc->mpc_ops->mpo_init_ifnet = 398100979Srwatson mpe->mpe_function; 399100979Srwatson break; 400100979Srwatson case MAC_INIT_IPQ: 401100979Srwatson mpc->mpc_ops->mpo_init_ipq = 402100979Srwatson mpe->mpe_function; 403100979Srwatson break; 404100979Srwatson case MAC_INIT_MBUF: 405100979Srwatson mpc->mpc_ops->mpo_init_mbuf = 406100979Srwatson mpe->mpe_function; 407100979Srwatson break; 408100979Srwatson case MAC_INIT_MOUNT: 409100979Srwatson mpc->mpc_ops->mpo_init_mount = 410100979Srwatson mpe->mpe_function; 411100979Srwatson break; 412100979Srwatson case MAC_INIT_PIPE: 413100979Srwatson mpc->mpc_ops->mpo_init_pipe = 414100979Srwatson mpe->mpe_function; 415100979Srwatson break; 416100979Srwatson case MAC_INIT_SOCKET: 417100979Srwatson mpc->mpc_ops->mpo_init_socket = 418100979Srwatson mpe->mpe_function; 419100979Srwatson break; 420100979Srwatson case MAC_INIT_TEMP: 421100979Srwatson mpc->mpc_ops->mpo_init_temp = 422100979Srwatson mpe->mpe_function; 423100979Srwatson break; 424100979Srwatson case MAC_INIT_VNODE: 425100979Srwatson mpc->mpc_ops->mpo_init_vnode = 426100979Srwatson mpe->mpe_function; 427100979Srwatson break; 428100979Srwatson case MAC_DESTROY_BPFDESC: 429100979Srwatson mpc->mpc_ops->mpo_destroy_bpfdesc = 430100979Srwatson mpe->mpe_function; 431100979Srwatson break; 432100979Srwatson case MAC_DESTROY_CRED: 433100979Srwatson mpc->mpc_ops->mpo_destroy_cred = 434100979Srwatson mpe->mpe_function; 435100979Srwatson break; 436100979Srwatson case MAC_DESTROY_DEVFSDIRENT: 437100979Srwatson mpc->mpc_ops->mpo_destroy_devfsdirent = 438100979Srwatson mpe->mpe_function; 439100979Srwatson break; 440100979Srwatson case MAC_DESTROY_IFNET: 441100979Srwatson mpc->mpc_ops->mpo_destroy_ifnet = 442100979Srwatson mpe->mpe_function; 443100979Srwatson break; 444100979Srwatson case MAC_DESTROY_IPQ: 445100979Srwatson mpc->mpc_ops->mpo_destroy_ipq = 446100979Srwatson mpe->mpe_function; 447100979Srwatson break; 448100979Srwatson case MAC_DESTROY_MBUF: 449100979Srwatson mpc->mpc_ops->mpo_destroy_mbuf = 450100979Srwatson mpe->mpe_function; 451100979Srwatson break; 452100979Srwatson case MAC_DESTROY_MOUNT: 453100979Srwatson mpc->mpc_ops->mpo_destroy_mount = 454100979Srwatson mpe->mpe_function; 455100979Srwatson break; 456100979Srwatson case MAC_DESTROY_PIPE: 457100979Srwatson mpc->mpc_ops->mpo_destroy_pipe = 458100979Srwatson mpe->mpe_function; 459100979Srwatson break; 460100979Srwatson case MAC_DESTROY_SOCKET: 461100979Srwatson mpc->mpc_ops->mpo_destroy_socket = 462100979Srwatson mpe->mpe_function; 463100979Srwatson break; 464100979Srwatson case MAC_DESTROY_TEMP: 465100979Srwatson mpc->mpc_ops->mpo_destroy_temp = 466100979Srwatson mpe->mpe_function; 467100979Srwatson break; 468100979Srwatson case MAC_DESTROY_VNODE: 469100979Srwatson mpc->mpc_ops->mpo_destroy_vnode = 470100979Srwatson mpe->mpe_function; 471100979Srwatson break; 472100979Srwatson case MAC_EXTERNALIZE: 473100979Srwatson mpc->mpc_ops->mpo_externalize = 474100979Srwatson mpe->mpe_function; 475100979Srwatson break; 476100979Srwatson case MAC_INTERNALIZE: 477100979Srwatson mpc->mpc_ops->mpo_internalize = 478100979Srwatson mpe->mpe_function; 479100979Srwatson break; 480100979Srwatson case MAC_CREATE_DEVFS_DEVICE: 481100979Srwatson mpc->mpc_ops->mpo_create_devfs_device = 482100979Srwatson mpe->mpe_function; 483100979Srwatson break; 484100979Srwatson case MAC_CREATE_DEVFS_DIRECTORY: 485100979Srwatson mpc->mpc_ops->mpo_create_devfs_directory = 486100979Srwatson mpe->mpe_function; 487100979Srwatson break; 488100979Srwatson case MAC_CREATE_DEVFS_VNODE: 489100979Srwatson mpc->mpc_ops->mpo_create_devfs_vnode = 490100979Srwatson mpe->mpe_function; 491100979Srwatson break; 492100979Srwatson case MAC_STDCREATEVNODE_EA: 493100979Srwatson mpc->mpc_ops->mpo_stdcreatevnode_ea = 494100979Srwatson mpe->mpe_function; 495100979Srwatson break; 496100979Srwatson case MAC_CREATE_VNODE: 497100979Srwatson mpc->mpc_ops->mpo_create_vnode = 498100979Srwatson mpe->mpe_function; 499100979Srwatson break; 500100979Srwatson case MAC_CREATE_MOUNT: 501100979Srwatson mpc->mpc_ops->mpo_create_mount = 502100979Srwatson mpe->mpe_function; 503100979Srwatson break; 504100979Srwatson case MAC_CREATE_ROOT_MOUNT: 505100979Srwatson mpc->mpc_ops->mpo_create_root_mount = 506100979Srwatson mpe->mpe_function; 507100979Srwatson break; 508100979Srwatson case MAC_RELABEL_VNODE: 509100979Srwatson mpc->mpc_ops->mpo_relabel_vnode = 510100979Srwatson mpe->mpe_function; 511100979Srwatson break; 512100979Srwatson case MAC_UPDATE_DEVFSDIRENT: 513100979Srwatson mpc->mpc_ops->mpo_update_devfsdirent = 514100979Srwatson mpe->mpe_function; 515100979Srwatson break; 516100979Srwatson case MAC_UPDATE_PROCFSVNODE: 517100979Srwatson mpc->mpc_ops->mpo_update_procfsvnode = 518100979Srwatson mpe->mpe_function; 519100979Srwatson break; 520100979Srwatson case MAC_UPDATE_VNODE_FROM_EXTATTR: 521100979Srwatson mpc->mpc_ops->mpo_update_vnode_from_extattr = 522100979Srwatson mpe->mpe_function; 523100979Srwatson break; 524100979Srwatson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 525100979Srwatson mpc->mpc_ops->mpo_update_vnode_from_externalized = 526100979Srwatson mpe->mpe_function; 527100979Srwatson break; 528100979Srwatson case MAC_UPDATE_VNODE_FROM_MOUNT: 529100979Srwatson mpc->mpc_ops->mpo_update_vnode_from_mount = 530100979Srwatson mpe->mpe_function; 531100979Srwatson break; 532100979Srwatson case MAC_CREATE_MBUF_FROM_SOCKET: 533100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_socket = 534100979Srwatson mpe->mpe_function; 535100979Srwatson break; 536100979Srwatson case MAC_CREATE_PIPE: 537100979Srwatson mpc->mpc_ops->mpo_create_pipe = 538100979Srwatson mpe->mpe_function; 539100979Srwatson break; 540100979Srwatson case MAC_CREATE_SOCKET: 541100979Srwatson mpc->mpc_ops->mpo_create_socket = 542100979Srwatson mpe->mpe_function; 543100979Srwatson break; 544100979Srwatson case MAC_CREATE_SOCKET_FROM_SOCKET: 545100979Srwatson mpc->mpc_ops->mpo_create_socket_from_socket = 546100979Srwatson mpe->mpe_function; 547100979Srwatson break; 548100979Srwatson case MAC_RELABEL_PIPE: 549100979Srwatson mpc->mpc_ops->mpo_relabel_pipe = 550100979Srwatson mpe->mpe_function; 551100979Srwatson break; 552100979Srwatson case MAC_RELABEL_SOCKET: 553100979Srwatson mpc->mpc_ops->mpo_relabel_socket = 554100979Srwatson mpe->mpe_function; 555100979Srwatson break; 556100979Srwatson case MAC_SET_SOCKET_PEER_FROM_MBUF: 557100979Srwatson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 558100979Srwatson mpe->mpe_function; 559100979Srwatson break; 560100979Srwatson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 561100979Srwatson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 562100979Srwatson mpe->mpe_function; 563100979Srwatson break; 564100979Srwatson case MAC_CREATE_BPFDESC: 565100979Srwatson mpc->mpc_ops->mpo_create_bpfdesc = 566100979Srwatson mpe->mpe_function; 567100979Srwatson break; 568100979Srwatson case MAC_CREATE_DATAGRAM_FROM_IPQ: 569100979Srwatson mpc->mpc_ops->mpo_create_datagram_from_ipq = 570100979Srwatson mpe->mpe_function; 571100979Srwatson break; 572100979Srwatson case MAC_CREATE_FRAGMENT: 573100979Srwatson mpc->mpc_ops->mpo_create_fragment = 574100979Srwatson mpe->mpe_function; 575100979Srwatson break; 576100979Srwatson case MAC_CREATE_IFNET: 577100979Srwatson mpc->mpc_ops->mpo_create_ifnet = 578100979Srwatson mpe->mpe_function; 579100979Srwatson break; 580100979Srwatson case MAC_CREATE_IPQ: 581100979Srwatson mpc->mpc_ops->mpo_create_ipq = 582100979Srwatson mpe->mpe_function; 583100979Srwatson break; 584100979Srwatson case MAC_CREATE_MBUF_FROM_MBUF: 585100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 586100979Srwatson mpe->mpe_function; 587100979Srwatson break; 588100979Srwatson case MAC_CREATE_MBUF_LINKLAYER: 589100979Srwatson mpc->mpc_ops->mpo_create_mbuf_linklayer = 590100979Srwatson mpe->mpe_function; 591100979Srwatson break; 592100979Srwatson case MAC_CREATE_MBUF_FROM_BPFDESC: 593100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 594100979Srwatson mpe->mpe_function; 595100979Srwatson break; 596100979Srwatson case MAC_CREATE_MBUF_FROM_IFNET: 597100979Srwatson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 598100979Srwatson mpe->mpe_function; 599100979Srwatson break; 600100979Srwatson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 601100979Srwatson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 602100979Srwatson mpe->mpe_function; 603100979Srwatson break; 604100979Srwatson case MAC_CREATE_MBUF_NETLAYER: 605100979Srwatson mpc->mpc_ops->mpo_create_mbuf_netlayer = 606100979Srwatson mpe->mpe_function; 607100979Srwatson break; 608100979Srwatson case MAC_FRAGMENT_MATCH: 609100979Srwatson mpc->mpc_ops->mpo_fragment_match = 610100979Srwatson mpe->mpe_function; 611100979Srwatson break; 612100979Srwatson case MAC_RELABEL_IFNET: 613100979Srwatson mpc->mpc_ops->mpo_relabel_ifnet = 614100979Srwatson mpe->mpe_function; 615100979Srwatson break; 616100979Srwatson case MAC_UPDATE_IPQ: 617100979Srwatson mpc->mpc_ops->mpo_update_ipq = 618100979Srwatson mpe->mpe_function; 619100979Srwatson break; 620100979Srwatson case MAC_CREATE_CRED: 621100979Srwatson mpc->mpc_ops->mpo_create_cred = 622100979Srwatson mpe->mpe_function; 623100979Srwatson break; 624100979Srwatson case MAC_EXECVE_TRANSITION: 625100979Srwatson mpc->mpc_ops->mpo_execve_transition = 626100979Srwatson mpe->mpe_function; 627100979Srwatson break; 628100979Srwatson case MAC_EXECVE_WILL_TRANSITION: 629100979Srwatson mpc->mpc_ops->mpo_execve_will_transition = 630100979Srwatson mpe->mpe_function; 631100979Srwatson break; 632100979Srwatson case MAC_CREATE_PROC0: 633100979Srwatson mpc->mpc_ops->mpo_create_proc0 = mpe->mpe_function; 634100979Srwatson break; 635100979Srwatson case MAC_CREATE_PROC1: 636100979Srwatson mpc->mpc_ops->mpo_create_proc1 = mpe->mpe_function; 637100979Srwatson break; 638100979Srwatson case MAC_RELABEL_CRED: 639100979Srwatson mpc->mpc_ops->mpo_relabel_cred = 640100979Srwatson mpe->mpe_function; 641100979Srwatson break; 642100979Srwatson case MAC_CHECK_BPFDESC_RECEIVE: 643100979Srwatson mpc->mpc_ops->mpo_check_bpfdesc_receive = 644100979Srwatson mpe->mpe_function; 645100979Srwatson break; 646100979Srwatson case MAC_CHECK_CRED_RELABEL: 647100979Srwatson mpc->mpc_ops->mpo_check_cred_relabel = 648100979Srwatson mpe->mpe_function; 649100979Srwatson break; 650100979Srwatson case MAC_CHECK_CRED_VISIBLE: 651100979Srwatson mpc->mpc_ops->mpo_check_cred_visible = 652100979Srwatson mpe->mpe_function; 653100979Srwatson break; 654100979Srwatson case MAC_CHECK_IFNET_RELABEL: 655100979Srwatson mpc->mpc_ops->mpo_check_ifnet_relabel = 656100979Srwatson mpe->mpe_function; 657100979Srwatson break; 658100979Srwatson case MAC_CHECK_IFNET_TRANSMIT: 659100979Srwatson mpc->mpc_ops->mpo_check_ifnet_transmit = 660100979Srwatson mpe->mpe_function; 661100979Srwatson break; 662100979Srwatson case MAC_CHECK_MOUNT_STAT: 663100979Srwatson mpc->mpc_ops->mpo_check_mount_stat = 664100979Srwatson mpe->mpe_function; 665100979Srwatson break; 666100979Srwatson case MAC_CHECK_PIPE_IOCTL: 667100979Srwatson mpc->mpc_ops->mpo_check_pipe_ioctl = 668100979Srwatson mpe->mpe_function; 669100979Srwatson break; 670100979Srwatson case MAC_CHECK_PIPE_OP: 671100979Srwatson mpc->mpc_ops->mpo_check_pipe_op = 672100979Srwatson mpe->mpe_function; 673100979Srwatson break; 674100979Srwatson case MAC_CHECK_PIPE_RELABEL: 675100979Srwatson mpc->mpc_ops->mpo_check_pipe_relabel = 676100979Srwatson mpe->mpe_function; 677100979Srwatson break; 678100979Srwatson case MAC_CHECK_PROC_DEBUG: 679100979Srwatson mpc->mpc_ops->mpo_check_proc_debug = 680100979Srwatson mpe->mpe_function; 681100979Srwatson break; 682100979Srwatson case MAC_CHECK_PROC_SCHED: 683100979Srwatson mpc->mpc_ops->mpo_check_proc_sched = 684100979Srwatson mpe->mpe_function; 685100979Srwatson break; 686100979Srwatson case MAC_CHECK_PROC_SIGNAL: 687100979Srwatson mpc->mpc_ops->mpo_check_proc_signal = 688100979Srwatson mpe->mpe_function; 689100979Srwatson break; 690100979Srwatson case MAC_CHECK_SOCKET_BIND: 691100979Srwatson mpc->mpc_ops->mpo_check_socket_bind = 692100979Srwatson mpe->mpe_function; 693100979Srwatson break; 694100979Srwatson case MAC_CHECK_SOCKET_CONNECT: 695100979Srwatson mpc->mpc_ops->mpo_check_socket_connect = 696100979Srwatson mpe->mpe_function; 697100979Srwatson break; 698101933Srwatson case MAC_CHECK_SOCKET_DELIVER: 699101933Srwatson mpc->mpc_ops->mpo_check_socket_deliver = 700101933Srwatson mpe->mpe_function; 701101933Srwatson break; 702100979Srwatson case MAC_CHECK_SOCKET_LISTEN: 703100979Srwatson mpc->mpc_ops->mpo_check_socket_listen = 704100979Srwatson mpe->mpe_function; 705100979Srwatson break; 706100979Srwatson case MAC_CHECK_SOCKET_RELABEL: 707100979Srwatson mpc->mpc_ops->mpo_check_socket_relabel = 708100979Srwatson mpe->mpe_function; 709100979Srwatson break; 710100979Srwatson case MAC_CHECK_SOCKET_VISIBLE: 711100979Srwatson mpc->mpc_ops->mpo_check_socket_visible = 712100979Srwatson mpe->mpe_function; 713100979Srwatson break; 714100979Srwatson case MAC_CHECK_VNODE_ACCESS: 715100979Srwatson mpc->mpc_ops->mpo_check_vnode_access = 716100979Srwatson mpe->mpe_function; 717100979Srwatson break; 718100979Srwatson case MAC_CHECK_VNODE_CHDIR: 719100979Srwatson mpc->mpc_ops->mpo_check_vnode_chdir = 720100979Srwatson mpe->mpe_function; 721100979Srwatson break; 722100979Srwatson case MAC_CHECK_VNODE_CHROOT: 723100979Srwatson mpc->mpc_ops->mpo_check_vnode_chroot = 724100979Srwatson mpe->mpe_function; 725100979Srwatson break; 726100979Srwatson case MAC_CHECK_VNODE_CREATE: 727100979Srwatson mpc->mpc_ops->mpo_check_vnode_create = 728100979Srwatson mpe->mpe_function; 729100979Srwatson break; 730100979Srwatson case MAC_CHECK_VNODE_DELETE: 731100979Srwatson mpc->mpc_ops->mpo_check_vnode_delete = 732100979Srwatson mpe->mpe_function; 733100979Srwatson break; 734100979Srwatson case MAC_CHECK_VNODE_DELETEACL: 735100979Srwatson mpc->mpc_ops->mpo_check_vnode_deleteacl = 736100979Srwatson mpe->mpe_function; 737100979Srwatson break; 738100979Srwatson case MAC_CHECK_VNODE_EXEC: 739100979Srwatson mpc->mpc_ops->mpo_check_vnode_exec = 740100979Srwatson mpe->mpe_function; 741100979Srwatson break; 742100979Srwatson case MAC_CHECK_VNODE_GETACL: 743100979Srwatson mpc->mpc_ops->mpo_check_vnode_getacl = 744100979Srwatson mpe->mpe_function; 745100979Srwatson break; 746100979Srwatson case MAC_CHECK_VNODE_GETEXTATTR: 747100979Srwatson mpc->mpc_ops->mpo_check_vnode_getextattr = 748100979Srwatson mpe->mpe_function; 749100979Srwatson break; 750100979Srwatson case MAC_CHECK_VNODE_LOOKUP: 751100979Srwatson mpc->mpc_ops->mpo_check_vnode_lookup = 752100979Srwatson mpe->mpe_function; 753100979Srwatson break; 754100979Srwatson case MAC_CHECK_VNODE_MMAP_PERMS: 755100979Srwatson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 756100979Srwatson mpe->mpe_function; 757100979Srwatson break; 758100979Srwatson case MAC_CHECK_VNODE_OPEN: 759100979Srwatson mpc->mpc_ops->mpo_check_vnode_open = 760100979Srwatson mpe->mpe_function; 761100979Srwatson break; 762102112Srwatson case MAC_CHECK_VNODE_POLL: 763102112Srwatson mpc->mpc_ops->mpo_check_vnode_poll = 764102112Srwatson mpe->mpe_function; 765102112Srwatson break; 766102112Srwatson case MAC_CHECK_VNODE_READ: 767102112Srwatson mpc->mpc_ops->mpo_check_vnode_read = 768102112Srwatson mpe->mpe_function; 769102112Srwatson break; 770100979Srwatson case MAC_CHECK_VNODE_READDIR: 771100979Srwatson mpc->mpc_ops->mpo_check_vnode_readdir = 772100979Srwatson mpe->mpe_function; 773100979Srwatson break; 774100979Srwatson case MAC_CHECK_VNODE_READLINK: 775100979Srwatson mpc->mpc_ops->mpo_check_vnode_readlink = 776100979Srwatson mpe->mpe_function; 777100979Srwatson break; 778100979Srwatson case MAC_CHECK_VNODE_RELABEL: 779100979Srwatson mpc->mpc_ops->mpo_check_vnode_relabel = 780100979Srwatson mpe->mpe_function; 781100979Srwatson break; 782100979Srwatson case MAC_CHECK_VNODE_RENAME_FROM: 783100979Srwatson mpc->mpc_ops->mpo_check_vnode_rename_from = 784100979Srwatson mpe->mpe_function; 785100979Srwatson break; 786100979Srwatson case MAC_CHECK_VNODE_RENAME_TO: 787100979Srwatson mpc->mpc_ops->mpo_check_vnode_rename_to = 788100979Srwatson mpe->mpe_function; 789100979Srwatson break; 790100979Srwatson case MAC_CHECK_VNODE_REVOKE: 791100979Srwatson mpc->mpc_ops->mpo_check_vnode_revoke = 792100979Srwatson mpe->mpe_function; 793100979Srwatson break; 794100979Srwatson case MAC_CHECK_VNODE_SETACL: 795100979Srwatson mpc->mpc_ops->mpo_check_vnode_setacl = 796100979Srwatson mpe->mpe_function; 797100979Srwatson break; 798100979Srwatson case MAC_CHECK_VNODE_SETEXTATTR: 799100979Srwatson mpc->mpc_ops->mpo_check_vnode_setextattr = 800100979Srwatson mpe->mpe_function; 801100979Srwatson break; 802100979Srwatson case MAC_CHECK_VNODE_SETFLAGS: 803100979Srwatson mpc->mpc_ops->mpo_check_vnode_setflags = 804100979Srwatson mpe->mpe_function; 805100979Srwatson break; 806100979Srwatson case MAC_CHECK_VNODE_SETMODE: 807100979Srwatson mpc->mpc_ops->mpo_check_vnode_setmode = 808100979Srwatson mpe->mpe_function; 809100979Srwatson break; 810100979Srwatson case MAC_CHECK_VNODE_SETOWNER: 811100979Srwatson mpc->mpc_ops->mpo_check_vnode_setowner = 812100979Srwatson mpe->mpe_function; 813100979Srwatson break; 814100979Srwatson case MAC_CHECK_VNODE_SETUTIMES: 815100979Srwatson mpc->mpc_ops->mpo_check_vnode_setutimes = 816100979Srwatson mpe->mpe_function; 817100979Srwatson break; 818100979Srwatson case MAC_CHECK_VNODE_STAT: 819100979Srwatson mpc->mpc_ops->mpo_check_vnode_stat = 820100979Srwatson mpe->mpe_function; 821100979Srwatson break; 822102112Srwatson case MAC_CHECK_VNODE_WRITE: 823102112Srwatson mpc->mpc_ops->mpo_check_vnode_write = 824102112Srwatson mpe->mpe_function; 825102112Srwatson break; 826100979Srwatson/* 827100979Srwatson default: 828100979Srwatson printf("MAC policy `%s': unknown operation %d\n", 829100979Srwatson mpc->mpc_name, mpe->mpe_constant); 830100979Srwatson return (EINVAL); 831100979Srwatson*/ 832100979Srwatson } 833100979Srwatson } 834100979Srwatson MAC_POLICY_LIST_LOCK(); 835100979Srwatson if (mac_policy_list_busy > 0) { 836100979Srwatson MAC_POLICY_LIST_UNLOCK(); 837100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 838100979Srwatson mpc->mpc_ops = NULL; 839100979Srwatson return (EBUSY); 840100979Srwatson } 841100979Srwatson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 842100979Srwatson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 843100979Srwatson MAC_POLICY_LIST_UNLOCK(); 844100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 845100979Srwatson mpc->mpc_ops = NULL; 846100979Srwatson return (EEXIST); 847100979Srwatson } 848100979Srwatson } 849100979Srwatson if (mpc->mpc_field_off != NULL) { 850100979Srwatson slot = ffs(mac_policy_offsets_free); 851100979Srwatson if (slot == 0) { 852100979Srwatson MAC_POLICY_LIST_UNLOCK(); 853100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 854100979Srwatson mpc->mpc_ops = NULL; 855100979Srwatson return (ENOMEM); 856100979Srwatson } 857100979Srwatson slot--; 858100979Srwatson mac_policy_offsets_free &= ~(1 << slot); 859100979Srwatson *mpc->mpc_field_off = slot; 860100979Srwatson } 861100979Srwatson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 862100979Srwatson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 863100979Srwatson 864100979Srwatson /* Per-policy initialization. */ 865100979Srwatson if (mpc->mpc_ops->mpo_init != NULL) 866100979Srwatson (*(mpc->mpc_ops->mpo_init))(mpc); 867100979Srwatson MAC_POLICY_LIST_UNLOCK(); 868100979Srwatson 869100979Srwatson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 870100979Srwatson mpc->mpc_name); 871100979Srwatson 872100979Srwatson return (0); 873100979Srwatson} 874100979Srwatson 875100979Srwatsonstatic int 876100979Srwatsonmac_policy_unregister(struct mac_policy_conf *mpc) 877100979Srwatson{ 878100979Srwatson 879100979Srwatson#if 0 880100979Srwatson /* 881100979Srwatson * Don't allow unloading modules with private data. 882100979Srwatson */ 883100979Srwatson if (mpc->mpc_field_off != NULL) 884100979Srwatson return (EBUSY); 885100979Srwatson#endif 886100979Srwatson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) 887100979Srwatson return (EBUSY); 888100979Srwatson MAC_POLICY_LIST_LOCK(); 889100979Srwatson if (mac_policy_list_busy > 0) { 890100979Srwatson MAC_POLICY_LIST_UNLOCK(); 891100979Srwatson return (EBUSY); 892100979Srwatson } 893100979Srwatson if (mpc->mpc_ops->mpo_destroy != NULL) 894100979Srwatson (*(mpc->mpc_ops->mpo_destroy))(mpc); 895100979Srwatson 896100979Srwatson LIST_REMOVE(mpc, mpc_list); 897100979Srwatson MAC_POLICY_LIST_UNLOCK(); 898100979Srwatson 899100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 900100979Srwatson mpc->mpc_ops = NULL; 901100979Srwatson 902100979Srwatson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 903100979Srwatson mpc->mpc_name); 904100979Srwatson 905100979Srwatson return (0); 906100979Srwatson} 907100979Srwatson 908100979Srwatson/* 909100979Srwatson * Define an error value precedence, and given two arguments, selects the 910100979Srwatson * value with the higher precedence. 911100979Srwatson */ 912100979Srwatsonstatic int 913100979Srwatsonerror_select(int error1, int error2) 914100979Srwatson{ 915100979Srwatson 916100979Srwatson /* Certain decision-making errors take top priority. */ 917100979Srwatson if (error1 == EDEADLK || error2 == EDEADLK) 918100979Srwatson return (EDEADLK); 919100979Srwatson 920100979Srwatson /* Invalid arguments should be reported where possible. */ 921100979Srwatson if (error1 == EINVAL || error2 == EINVAL) 922100979Srwatson return (EINVAL); 923100979Srwatson 924100979Srwatson /* Precedence goes to "visibility", with both process and file. */ 925100979Srwatson if (error1 == ESRCH || error2 == ESRCH) 926100979Srwatson return (ESRCH); 927100979Srwatson 928100979Srwatson if (error1 == ENOENT || error2 == ENOENT) 929100979Srwatson return (ENOENT); 930100979Srwatson 931100979Srwatson /* Precedence goes to DAC/MAC protections. */ 932100979Srwatson if (error1 == EACCES || error2 == EACCES) 933100979Srwatson return (EACCES); 934100979Srwatson 935100979Srwatson /* Precedence goes to privilege. */ 936100979Srwatson if (error1 == EPERM || error2 == EPERM) 937100979Srwatson return (EPERM); 938100979Srwatson 939100979Srwatson /* Precedence goes to error over success; otherwise, arbitrary. */ 940100979Srwatson if (error1 != 0) 941100979Srwatson return (error1); 942100979Srwatson return (error2); 943100979Srwatson} 944100979Srwatson 945100979Srwatsonvoid 946100979Srwatsonmac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 947100979Srwatson{ 948100979Srwatson 949100979Srwatson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 950100979Srwatson} 951100979Srwatson 952100979Srwatsonvoid 953100979Srwatsonmac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 954100979Srwatson{ 955100979Srwatson 956100979Srwatson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 957100979Srwatson} 958100979Srwatson 959100979Srwatson/* 960100979Srwatson * Support callout for policies that manage their own externalization 961100979Srwatson * using extended attributes. 962100979Srwatson */ 963100979Srwatsonstatic int 964100979Srwatsonmac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 965100979Srwatson{ 966100979Srwatson int error; 967100979Srwatson 968100979Srwatson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 969100979Srwatson &mp->mnt_fslabel); 970100979Srwatson 971100979Srwatson return (error); 972100979Srwatson} 973100979Srwatson 974100979Srwatson/* 975100979Srwatson * Given an externalized mac label, internalize it and stamp it on a 976100979Srwatson * vnode. 977100979Srwatson */ 978100979Srwatsonstatic int 979100979Srwatsonmac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 980100979Srwatson{ 981100979Srwatson int error; 982100979Srwatson 983100979Srwatson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 984100979Srwatson 985100979Srwatson return (error); 986100979Srwatson} 987100979Srwatson 988100979Srwatson/* 989100979Srwatson * Call out to individual policies to update the label in a vnode from 990100979Srwatson * the mountpoint. 991100979Srwatson */ 992100979Srwatsonvoid 993100979Srwatsonmac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 994100979Srwatson{ 995100979Srwatson 996100979Srwatson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 997100979Srwatson &mp->mnt_fslabel); 998100979Srwatson 999101308Sjeff ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 1000100979Srwatson if (mac_cache_fslabel_in_vnode) 1001101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 1002100979Srwatson} 1003100979Srwatson 1004100979Srwatson/* 1005100979Srwatson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 1006100979Srwatson * to store label data. Can be referenced by filesystems supporting 1007100979Srwatson * extended attributes. 1008100979Srwatson */ 1009100979Srwatsonint 1010100979Srwatsonvop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 1011100979Srwatson{ 1012100979Srwatson struct vnode *vp = ap->a_vp; 1013100979Srwatson struct mac extmac; 1014100979Srwatson int buflen, error; 1015100979Srwatson 1016100979Srwatson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 1017100979Srwatson 1018100979Srwatson /* 1019100979Srwatson * Call out to external policies first. Order doesn't really 1020100979Srwatson * matter, as long as failure of one assures failure of all. 1021100979Srwatson */ 1022100979Srwatson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 1023100979Srwatson if (error) 1024100979Srwatson return (error); 1025100979Srwatson 1026100979Srwatson buflen = sizeof(extmac); 1027100979Srwatson error = vn_extattr_get(vp, IO_NODELOCKED, 1028100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 1029100979Srwatson (char *)&extmac, curthread); 1030100979Srwatson switch (error) { 1031100979Srwatson case 0: 1032100979Srwatson /* Got it */ 1033100979Srwatson break; 1034100979Srwatson 1035100979Srwatson case ENOATTR: 1036100979Srwatson /* 1037100979Srwatson * Use the label from the mount point. 1038100979Srwatson */ 1039100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1040100979Srwatson return (0); 1041100979Srwatson 1042100979Srwatson case EOPNOTSUPP: 1043100979Srwatson default: 1044100979Srwatson /* Fail horribly. */ 1045100979Srwatson return (error); 1046100979Srwatson } 1047100979Srwatson 1048100979Srwatson if (buflen != sizeof(extmac)) 1049100979Srwatson error = EPERM; /* Fail very closed. */ 1050100979Srwatson if (error == 0) 1051100979Srwatson error = mac_update_vnode_from_externalized(vp, &extmac); 1052100979Srwatson if (error == 0) 1053101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 1054100979Srwatson else { 1055100979Srwatson struct vattr va; 1056100979Srwatson 1057100979Srwatson printf("Corrupted label on %s", 1058100979Srwatson vp->v_mount->mnt_stat.f_mntonname); 1059100979Srwatson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 1060100979Srwatson printf(" inum %ld", va.va_fileid); 1061100979Srwatson if (mac_debug_label_fallback) { 1062100979Srwatson printf(", falling back.\n"); 1063100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1064100979Srwatson error = 0; 1065100979Srwatson } else { 1066100979Srwatson printf(".\n"); 1067100979Srwatson error = EPERM; 1068100979Srwatson } 1069100979Srwatson } 1070100979Srwatson 1071100979Srwatson return (error); 1072100979Srwatson} 1073100979Srwatson 1074100979Srwatson/* 1075100979Srwatson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 1076100979Srwatson * the labeling activity outselves. Filesystems should be careful not 1077100979Srwatson * to change their minds regarding whether they support vop_refreshlabel() 1078100979Srwatson * for a vnode or not. Don't cache the vnode here, allow the file 1079100979Srwatson * system code to determine if it's safe to cache. If we update from 1080100979Srwatson * the mount, don't cache since a change to the mount label should affect 1081100979Srwatson * all vnodes. 1082100979Srwatson */ 1083100979Srwatsonstatic int 1084100979Srwatsonvn_refreshlabel(struct vnode *vp, struct ucred *cred) 1085100979Srwatson{ 1086100979Srwatson int error; 1087100979Srwatson 1088100979Srwatson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 1089100979Srwatson 1090100979Srwatson if (vp->v_mount == NULL) { 1091100979Srwatson/* 1092100979Srwatson Eventually, we probably want to special-case refreshing 1093100979Srwatson of deadfs vnodes, and if there's a lock-free race somewhere, 1094100979Srwatson that case might be handled here. 1095100979Srwatson 1096100979Srwatson mac_update_vnode_deadfs(vp); 1097100979Srwatson return (0); 1098100979Srwatson */ 1099100979Srwatson /* printf("vn_refreshlabel: null v_mount\n"); */ 1100100979Srwatson if (vp->v_tag != VT_NON) 1101100979Srwatson printf( 1102100979Srwatson "vn_refreshlabel: null v_mount with non-VT_NON\n"); 1103100979Srwatson return (EBADF); 1104100979Srwatson } 1105100979Srwatson 1106101308Sjeff if (vp->v_vflag & VV_CACHEDLABEL) { 1107100979Srwatson mac_vnode_label_cache_hits++; 1108100979Srwatson return (0); 1109100979Srwatson } else 1110100979Srwatson mac_vnode_label_cache_misses++; 1111100979Srwatson 1112100979Srwatson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 1113100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1114100979Srwatson return (0); 1115100979Srwatson } 1116100979Srwatson 1117100979Srwatson error = VOP_REFRESHLABEL(vp, cred, curthread); 1118100979Srwatson switch (error) { 1119100979Srwatson case EOPNOTSUPP: 1120100979Srwatson /* 1121100979Srwatson * If labels are not supported on this vnode, fall back to 1122100979Srwatson * the label in the mount and propagate it to the vnode. 1123100979Srwatson * There should probably be some sort of policy/flag/decision 1124100979Srwatson * about doing this. 1125100979Srwatson */ 1126100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1127100979Srwatson error = 0; 1128100979Srwatson default: 1129100979Srwatson return (error); 1130100979Srwatson } 1131100979Srwatson} 1132100979Srwatson 1133100979Srwatson/* 1134100979Srwatson * Helper function for file systems using the vop_std*_ea() calls. This 1135100979Srwatson * function must be called after EA service is available for the vnode, 1136100979Srwatson * but before it's hooked up to the namespace so that the node persists 1137100979Srwatson * if there's a crash, or before it can be accessed. On successful 1138100979Srwatson * commit of the label to disk (etc), do cache the label. 1139100979Srwatson */ 1140100979Srwatsonint 1141100979Srwatsonvop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 1142100979Srwatson{ 1143100979Srwatson struct mac extmac; 1144100979Srwatson int error; 1145100979Srwatson 1146101308Sjeff ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 1147100979Srwatson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 1148100979Srwatson mac_update_vnode_from_mount(tvp, tvp->v_mount); 1149100979Srwatson } else { 1150100979Srwatson error = vn_refreshlabel(dvp, cred); 1151100979Srwatson if (error) 1152100979Srwatson return (error); 1153100979Srwatson 1154100979Srwatson /* 1155100979Srwatson * Stick the label in the vnode. Then try to write to 1156100979Srwatson * disk. If we fail, return a failure to abort the 1157100979Srwatson * create operation. Really, this failure shouldn't 1158100979Srwatson * happen except in fairly unusual circumstances (out 1159100979Srwatson * of disk, etc). 1160100979Srwatson */ 1161100979Srwatson mac_create_vnode(cred, dvp, tvp); 1162100979Srwatson 1163100979Srwatson error = mac_stdcreatevnode_ea(tvp); 1164100979Srwatson if (error) 1165100979Srwatson return (error); 1166100979Srwatson 1167100979Srwatson /* 1168100979Srwatson * XXX: Eventually this will go away and all policies will 1169100979Srwatson * directly manage their extended attributes. 1170100979Srwatson */ 1171100979Srwatson error = mac_externalize(&tvp->v_label, &extmac); 1172100979Srwatson if (error) 1173100979Srwatson return (error); 1174100979Srwatson 1175100979Srwatson error = vn_extattr_set(tvp, IO_NODELOCKED, 1176100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 1177100979Srwatson sizeof(extmac), (char *)&extmac, curthread); 1178100979Srwatson if (error == 0) 1179101308Sjeff tvp->v_vflag |= VV_CACHEDLABEL; 1180100979Srwatson else { 1181100979Srwatson#if 0 1182100979Srwatson /* 1183100979Srwatson * In theory, we could have fall-back behavior here. 1184100979Srwatson * It would probably be incorrect. 1185100979Srwatson */ 1186100979Srwatson#endif 1187100979Srwatson return (error); 1188100979Srwatson } 1189100979Srwatson } 1190100979Srwatson 1191100979Srwatson return (0); 1192100979Srwatson} 1193100979Srwatson 1194100979Srwatsonvoid 1195100979Srwatsonmac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 1196100979Srwatson{ 1197100979Srwatson int error; 1198100979Srwatson 1199100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 1200100979Srwatson 1201100979Srwatson error = vn_refreshlabel(vp, old); 1202100979Srwatson if (error) { 1203100979Srwatson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 1204100979Srwatson error); 1205100979Srwatson printf("mac_execve_transition: using old vnode label\n"); 1206100979Srwatson } 1207100979Srwatson 1208100979Srwatson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 1209100979Srwatson} 1210100979Srwatson 1211100979Srwatsonint 1212100979Srwatsonmac_execve_will_transition(struct ucred *old, struct vnode *vp) 1213100979Srwatson{ 1214100979Srwatson int error, result; 1215100979Srwatson 1216100979Srwatson error = vn_refreshlabel(vp, old); 1217100979Srwatson if (error) 1218100979Srwatson return (error); 1219100979Srwatson 1220100979Srwatson result = 0; 1221100979Srwatson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 1222100979Srwatson 1223100979Srwatson return (result); 1224100979Srwatson} 1225100979Srwatson 1226100979Srwatsonstatic void 1227100979Srwatsonmac_init_label(struct label *label) 1228100979Srwatson{ 1229100979Srwatson 1230100979Srwatson bzero(label, sizeof(*label)); 1231100979Srwatson label->l_flags = MAC_FLAG_INITIALIZED; 1232100979Srwatson} 1233100979Srwatson 1234100979Srwatsonstatic void 1235100979Srwatsonmac_init_structmac(struct mac *mac) 1236100979Srwatson{ 1237100979Srwatson 1238100979Srwatson bzero(mac, sizeof(*mac)); 1239100979Srwatson mac->m_macflags = MAC_FLAG_INITIALIZED; 1240100979Srwatson} 1241100979Srwatson 1242100979Srwatsonstatic void 1243100979Srwatsonmac_destroy_label(struct label *label) 1244100979Srwatson{ 1245100979Srwatson 1246100979Srwatson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 1247100979Srwatson ("destroying uninitialized label")); 1248100979Srwatson 1249100979Srwatson bzero(label, sizeof(*label)); 1250100979Srwatson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 1251100979Srwatson} 1252100979Srwatson 1253100979Srwatsonint 1254100979Srwatsonmac_init_mbuf(struct mbuf *m, int how) 1255100979Srwatson{ 1256100979Srwatson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 1257100979Srwatson 1258100979Srwatson /* "how" is one of M_(TRY|DONT)WAIT */ 1259100979Srwatson mac_init_label(&m->m_pkthdr.label); 1260100979Srwatson MAC_PERFORM(init_mbuf, m, how, &m->m_pkthdr.label); 1261101988Srwatson#ifdef MAC_DEBUG 1262100979Srwatson atomic_add_int(&nmacmbufs, 1); 1263101988Srwatson#endif 1264100979Srwatson return (0); 1265100979Srwatson} 1266100979Srwatson 1267100979Srwatsonvoid 1268100979Srwatsonmac_destroy_mbuf(struct mbuf *m) 1269100979Srwatson{ 1270100979Srwatson 1271100979Srwatson MAC_PERFORM(destroy_mbuf, m, &m->m_pkthdr.label); 1272100979Srwatson mac_destroy_label(&m->m_pkthdr.label); 1273101988Srwatson#ifdef MAC_DEBUG 1274100979Srwatson atomic_subtract_int(&nmacmbufs, 1); 1275101988Srwatson#endif 1276100979Srwatson} 1277100979Srwatson 1278100979Srwatsonvoid 1279100979Srwatsonmac_init_cred(struct ucred *cr) 1280100979Srwatson{ 1281100979Srwatson 1282100979Srwatson mac_init_label(&cr->cr_label); 1283100979Srwatson MAC_PERFORM(init_cred, cr, &cr->cr_label); 1284101988Srwatson#ifdef MAC_DEBUG 1285100979Srwatson atomic_add_int(&nmaccreds, 1); 1286101988Srwatson#endif 1287100979Srwatson} 1288100979Srwatson 1289100979Srwatsonvoid 1290100979Srwatsonmac_destroy_cred(struct ucred *cr) 1291100979Srwatson{ 1292100979Srwatson 1293100979Srwatson MAC_PERFORM(destroy_cred, cr, &cr->cr_label); 1294100979Srwatson mac_destroy_label(&cr->cr_label); 1295101988Srwatson#ifdef MAC_DEBUG 1296100979Srwatson atomic_subtract_int(&nmaccreds, 1); 1297101988Srwatson#endif 1298100979Srwatson} 1299100979Srwatson 1300100979Srwatsonvoid 1301100979Srwatsonmac_init_ifnet(struct ifnet *ifp) 1302100979Srwatson{ 1303100979Srwatson 1304100979Srwatson mac_init_label(&ifp->if_label); 1305100979Srwatson MAC_PERFORM(init_ifnet, ifp, &ifp->if_label); 1306101988Srwatson#ifdef MAC_DEBUG 1307100979Srwatson atomic_add_int(&nmacifnets, 1); 1308101988Srwatson#endif 1309100979Srwatson} 1310100979Srwatson 1311100979Srwatsonvoid 1312100979Srwatsonmac_destroy_ifnet(struct ifnet *ifp) 1313100979Srwatson{ 1314100979Srwatson 1315100979Srwatson MAC_PERFORM(destroy_ifnet, ifp, &ifp->if_label); 1316100979Srwatson mac_destroy_label(&ifp->if_label); 1317101988Srwatson#ifdef MAC_DEBUG 1318100979Srwatson atomic_subtract_int(&nmacifnets, 1); 1319101988Srwatson#endif 1320100979Srwatson} 1321100979Srwatson 1322100979Srwatsonvoid 1323100979Srwatsonmac_init_ipq(struct ipq *ipq) 1324100979Srwatson{ 1325100979Srwatson 1326100979Srwatson mac_init_label(&ipq->ipq_label); 1327100979Srwatson MAC_PERFORM(init_ipq, ipq, &ipq->ipq_label); 1328101988Srwatson#ifdef MAC_DEBUG 1329100979Srwatson atomic_add_int(&nmacipqs, 1); 1330101988Srwatson#endif 1331100979Srwatson} 1332100979Srwatson 1333100979Srwatsonvoid 1334100979Srwatsonmac_destroy_ipq(struct ipq *ipq) 1335100979Srwatson{ 1336100979Srwatson 1337100979Srwatson MAC_PERFORM(destroy_ipq, ipq, &ipq->ipq_label); 1338100979Srwatson mac_destroy_label(&ipq->ipq_label); 1339101988Srwatson#ifdef MAC_DEBUG 1340100979Srwatson atomic_subtract_int(&nmacipqs, 1); 1341101988Srwatson#endif 1342100979Srwatson} 1343100979Srwatson 1344100979Srwatsonvoid 1345100979Srwatsonmac_init_socket(struct socket *socket) 1346100979Srwatson{ 1347100979Srwatson 1348100979Srwatson mac_init_label(&socket->so_label); 1349100979Srwatson mac_init_label(&socket->so_peerlabel); 1350100979Srwatson MAC_PERFORM(init_socket, socket, &socket->so_label, 1351100979Srwatson &socket->so_peerlabel); 1352101988Srwatson#ifdef MAC_DEBUG 1353100979Srwatson atomic_add_int(&nmacsockets, 1); 1354101988Srwatson#endif 1355100979Srwatson} 1356100979Srwatson 1357100979Srwatsonvoid 1358100979Srwatsonmac_destroy_socket(struct socket *socket) 1359100979Srwatson{ 1360100979Srwatson 1361100979Srwatson MAC_PERFORM(destroy_socket, socket, &socket->so_label, 1362100979Srwatson &socket->so_peerlabel); 1363100979Srwatson mac_destroy_label(&socket->so_label); 1364100979Srwatson mac_destroy_label(&socket->so_peerlabel); 1365101988Srwatson#ifdef MAC_DEBUG 1366100979Srwatson atomic_subtract_int(&nmacsockets, 1); 1367101988Srwatson#endif 1368100979Srwatson} 1369100979Srwatson 1370100979Srwatsonvoid 1371100979Srwatsonmac_init_pipe(struct pipe *pipe) 1372100979Srwatson{ 1373100979Srwatson struct label *label; 1374100979Srwatson 1375100979Srwatson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 1376100979Srwatson mac_init_label(label); 1377100979Srwatson pipe->pipe_label = label; 1378100979Srwatson pipe->pipe_peer->pipe_label = label; 1379100979Srwatson MAC_PERFORM(init_pipe, pipe, pipe->pipe_label); 1380101988Srwatson#ifdef MAC_DEBUG 1381100979Srwatson atomic_add_int(&nmacpipes, 1); 1382101988Srwatson#endif 1383100979Srwatson} 1384100979Srwatson 1385100979Srwatsonvoid 1386100979Srwatsonmac_destroy_pipe(struct pipe *pipe) 1387100979Srwatson{ 1388100979Srwatson 1389100979Srwatson MAC_PERFORM(destroy_pipe, pipe, pipe->pipe_label); 1390100979Srwatson mac_destroy_label(pipe->pipe_label); 1391100979Srwatson free(pipe->pipe_label, M_MACPIPELABEL); 1392101988Srwatson#ifdef MAC_DEBUG 1393100979Srwatson atomic_subtract_int(&nmacpipes, 1); 1394101988Srwatson#endif 1395100979Srwatson} 1396100979Srwatson 1397100979Srwatsonvoid 1398100979Srwatsonmac_init_bpfdesc(struct bpf_d *bpf_d) 1399100979Srwatson{ 1400100979Srwatson 1401100979Srwatson mac_init_label(&bpf_d->bd_label); 1402100979Srwatson MAC_PERFORM(init_bpfdesc, bpf_d, &bpf_d->bd_label); 1403101988Srwatson#ifdef MAC_DEBUG 1404100979Srwatson atomic_add_int(&nmacbpfdescs, 1); 1405101988Srwatson#endif 1406100979Srwatson} 1407100979Srwatson 1408100979Srwatsonvoid 1409100979Srwatsonmac_destroy_bpfdesc(struct bpf_d *bpf_d) 1410100979Srwatson{ 1411100979Srwatson 1412100979Srwatson MAC_PERFORM(destroy_bpfdesc, bpf_d, &bpf_d->bd_label); 1413100979Srwatson mac_destroy_label(&bpf_d->bd_label); 1414101988Srwatson#ifdef MAC_DEBUG 1415100979Srwatson atomic_subtract_int(&nmacbpfdescs, 1); 1416101988Srwatson#endif 1417100979Srwatson} 1418100979Srwatson 1419100979Srwatsonvoid 1420100979Srwatsonmac_init_mount(struct mount *mp) 1421100979Srwatson{ 1422100979Srwatson 1423100979Srwatson mac_init_label(&mp->mnt_mntlabel); 1424100979Srwatson mac_init_label(&mp->mnt_fslabel); 1425100979Srwatson MAC_PERFORM(init_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 1426101988Srwatson#ifdef MAC_DEBUG 1427100979Srwatson atomic_add_int(&nmacmounts, 1); 1428101988Srwatson#endif 1429100979Srwatson} 1430100979Srwatson 1431100979Srwatsonvoid 1432100979Srwatsonmac_destroy_mount(struct mount *mp) 1433100979Srwatson{ 1434100979Srwatson 1435100979Srwatson MAC_PERFORM(destroy_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 1436100979Srwatson mac_destroy_label(&mp->mnt_fslabel); 1437100979Srwatson mac_destroy_label(&mp->mnt_mntlabel); 1438101988Srwatson#ifdef MAC_DEBUG 1439100979Srwatson atomic_subtract_int(&nmacmounts, 1); 1440101988Srwatson#endif 1441100979Srwatson} 1442100979Srwatson 1443100979Srwatsonstatic void 1444100979Srwatsonmac_init_temp(struct label *label) 1445100979Srwatson{ 1446100979Srwatson 1447100979Srwatson mac_init_label(label); 1448100979Srwatson MAC_PERFORM(init_temp, label); 1449101988Srwatson#ifdef MAC_DEBUG 1450100979Srwatson atomic_add_int(&nmactemp, 1); 1451101988Srwatson#endif 1452100979Srwatson} 1453100979Srwatson 1454100979Srwatsonstatic void 1455100979Srwatsonmac_destroy_temp(struct label *label) 1456100979Srwatson{ 1457100979Srwatson 1458100979Srwatson MAC_PERFORM(destroy_temp, label); 1459100979Srwatson mac_destroy_label(label); 1460101988Srwatson#ifdef MAC_DEBUG 1461100979Srwatson atomic_subtract_int(&nmactemp, 1); 1462101988Srwatson#endif 1463100979Srwatson} 1464100979Srwatson 1465100979Srwatsonvoid 1466100979Srwatsonmac_init_vnode(struct vnode *vp) 1467100979Srwatson{ 1468100979Srwatson 1469100979Srwatson mac_init_label(&vp->v_label); 1470100979Srwatson MAC_PERFORM(init_vnode, vp, &vp->v_label); 1471101988Srwatson#ifdef MAC_DEBUG 1472100979Srwatson atomic_add_int(&nmacvnodes, 1); 1473101988Srwatson#endif 1474100979Srwatson} 1475100979Srwatson 1476100979Srwatsonvoid 1477100979Srwatsonmac_destroy_vnode(struct vnode *vp) 1478100979Srwatson{ 1479100979Srwatson 1480100979Srwatson MAC_PERFORM(destroy_vnode, vp, &vp->v_label); 1481100979Srwatson mac_destroy_label(&vp->v_label); 1482101988Srwatson#ifdef MAC_DEBUG 1483100979Srwatson atomic_subtract_int(&nmacvnodes, 1); 1484101988Srwatson#endif 1485100979Srwatson} 1486100979Srwatson 1487100979Srwatsonvoid 1488100979Srwatsonmac_init_devfsdirent(struct devfs_dirent *de) 1489100979Srwatson{ 1490100979Srwatson 1491100979Srwatson mac_init_label(&de->de_label); 1492100979Srwatson MAC_PERFORM(init_devfsdirent, de, &de->de_label); 1493101988Srwatson#ifdef MAC_DEBUG 1494100979Srwatson atomic_add_int(&nmacdevfsdirents, 1); 1495101988Srwatson#endif 1496100979Srwatson} 1497100979Srwatson 1498100979Srwatsonvoid 1499100979Srwatsonmac_destroy_devfsdirent(struct devfs_dirent *de) 1500100979Srwatson{ 1501100979Srwatson 1502100979Srwatson MAC_PERFORM(destroy_devfsdirent, de, &de->de_label); 1503100979Srwatson mac_destroy_label(&de->de_label); 1504101988Srwatson#ifdef MAC_DEBUG 1505100979Srwatson atomic_subtract_int(&nmacdevfsdirents, 1); 1506101988Srwatson#endif 1507100979Srwatson} 1508100979Srwatson 1509100979Srwatsonstatic int 1510100979Srwatsonmac_externalize(struct label *label, struct mac *mac) 1511100979Srwatson{ 1512100979Srwatson int error; 1513100979Srwatson 1514100979Srwatson mac_init_structmac(mac); 1515100979Srwatson MAC_CHECK(externalize, label, mac); 1516100979Srwatson 1517100979Srwatson return (error); 1518100979Srwatson} 1519100979Srwatson 1520100979Srwatsonstatic int 1521100979Srwatsonmac_internalize(struct label *label, struct mac *mac) 1522100979Srwatson{ 1523100979Srwatson int error; 1524100979Srwatson 1525100979Srwatson mac_init_temp(label); 1526100979Srwatson MAC_CHECK(internalize, label, mac); 1527100979Srwatson if (error) 1528100979Srwatson mac_destroy_temp(label); 1529100979Srwatson 1530100979Srwatson return (error); 1531100979Srwatson} 1532100979Srwatson 1533100979Srwatson/* 1534100979Srwatson * Initialize MAC label for the first kernel process, from which other 1535100979Srwatson * kernel processes and threads are spawned. 1536100979Srwatson */ 1537100979Srwatsonvoid 1538100979Srwatsonmac_create_proc0(struct ucred *cred) 1539100979Srwatson{ 1540100979Srwatson 1541100979Srwatson MAC_PERFORM(create_proc0, cred); 1542100979Srwatson} 1543100979Srwatson 1544100979Srwatson/* 1545100979Srwatson * Initialize MAC label for the first userland process, from which other 1546100979Srwatson * userland processes and threads are spawned. 1547100979Srwatson */ 1548100979Srwatsonvoid 1549100979Srwatsonmac_create_proc1(struct ucred *cred) 1550100979Srwatson{ 1551100979Srwatson 1552100979Srwatson MAC_PERFORM(create_proc1, cred); 1553100979Srwatson} 1554100979Srwatson 1555100979Srwatson/* 1556100979Srwatson * When a new process is created, its label must be initialized. Generally, 1557100979Srwatson * this involves inheritence from the parent process, modulo possible 1558100979Srwatson * deltas. This function allows that processing to take place. 1559100979Srwatson */ 1560100979Srwatsonvoid 1561100979Srwatsonmac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 1562100979Srwatson{ 1563100979Srwatson 1564100979Srwatson MAC_PERFORM(create_cred, parent_cred, child_cred); 1565100979Srwatson} 1566100979Srwatson 1567100979Srwatsonint 1568100979Srwatsonmac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 1569100979Srwatson{ 1570100979Srwatson int error; 1571100979Srwatson 1572100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 1573100979Srwatson 1574100979Srwatson if (!mac_enforce_fs) 1575100979Srwatson return (0); 1576100979Srwatson 1577100979Srwatson error = vn_refreshlabel(vp, cred); 1578100979Srwatson if (error) 1579100979Srwatson return (error); 1580100979Srwatson 1581100979Srwatson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 1582100979Srwatson return (error); 1583100979Srwatson} 1584100979Srwatson 1585100979Srwatsonint 1586100979Srwatsonmac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 1587100979Srwatson{ 1588100979Srwatson int error; 1589100979Srwatson 1590100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 1591100979Srwatson 1592100979Srwatson if (!mac_enforce_fs) 1593100979Srwatson return (0); 1594100979Srwatson 1595100979Srwatson error = vn_refreshlabel(dvp, cred); 1596100979Srwatson if (error) 1597100979Srwatson return (error); 1598100979Srwatson 1599100979Srwatson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 1600100979Srwatson return (error); 1601100979Srwatson} 1602100979Srwatson 1603100979Srwatsonint 1604100979Srwatsonmac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 1605100979Srwatson{ 1606100979Srwatson int error; 1607100979Srwatson 1608100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 1609100979Srwatson 1610100979Srwatson if (!mac_enforce_fs) 1611100979Srwatson return (0); 1612100979Srwatson 1613100979Srwatson error = vn_refreshlabel(dvp, cred); 1614100979Srwatson if (error) 1615100979Srwatson return (error); 1616100979Srwatson 1617100979Srwatson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 1618100979Srwatson return (error); 1619100979Srwatson} 1620100979Srwatson 1621100979Srwatsonint 1622100979Srwatsonmac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 1623100979Srwatson struct componentname *cnp, struct vattr *vap) 1624100979Srwatson{ 1625100979Srwatson int error; 1626100979Srwatson 1627100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 1628100979Srwatson 1629100979Srwatson if (!mac_enforce_fs) 1630100979Srwatson return (0); 1631100979Srwatson 1632100979Srwatson error = vn_refreshlabel(dvp, cred); 1633100979Srwatson if (error) 1634100979Srwatson return (error); 1635100979Srwatson 1636100979Srwatson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 1637100979Srwatson return (error); 1638100979Srwatson} 1639100979Srwatson 1640100979Srwatsonint 1641100979Srwatsonmac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 1642100979Srwatson struct componentname *cnp) 1643100979Srwatson{ 1644100979Srwatson int error; 1645100979Srwatson 1646100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 1647100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 1648100979Srwatson 1649100979Srwatson if (!mac_enforce_fs) 1650100979Srwatson return (0); 1651100979Srwatson 1652100979Srwatson error = vn_refreshlabel(dvp, cred); 1653100979Srwatson if (error) 1654100979Srwatson return (error); 1655100979Srwatson error = vn_refreshlabel(vp, cred); 1656100979Srwatson if (error) 1657100979Srwatson return (error); 1658100979Srwatson 1659100979Srwatson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 1660100979Srwatson &vp->v_label, cnp); 1661100979Srwatson return (error); 1662100979Srwatson} 1663100979Srwatson 1664100979Srwatsonint 1665100979Srwatsonmac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 1666100979Srwatson acl_type_t type) 1667100979Srwatson{ 1668100979Srwatson int error; 1669100979Srwatson 1670100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 1671100979Srwatson 1672100979Srwatson if (!mac_enforce_fs) 1673100979Srwatson return (0); 1674100979Srwatson 1675100979Srwatson error = vn_refreshlabel(vp, cred); 1676100979Srwatson if (error) 1677100979Srwatson return (error); 1678100979Srwatson 1679100979Srwatson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 1680100979Srwatson return (error); 1681100979Srwatson} 1682100979Srwatson 1683100979Srwatsonint 1684100979Srwatsonmac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 1685100979Srwatson{ 1686100979Srwatson int error; 1687100979Srwatson 1688102102Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1689102102Srwatson 1690100979Srwatson if (!mac_enforce_process && !mac_enforce_fs) 1691100979Srwatson return (0); 1692100979Srwatson 1693100979Srwatson error = vn_refreshlabel(vp, cred); 1694100979Srwatson if (error) 1695100979Srwatson return (error); 1696100979Srwatson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 1697100979Srwatson 1698100979Srwatson return (error); 1699100979Srwatson} 1700100979Srwatson 1701100979Srwatsonint 1702100979Srwatsonmac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 1703100979Srwatson{ 1704100979Srwatson int error; 1705100979Srwatson 1706100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 1707100979Srwatson 1708100979Srwatson if (!mac_enforce_fs) 1709100979Srwatson return (0); 1710100979Srwatson 1711100979Srwatson error = vn_refreshlabel(vp, cred); 1712100979Srwatson if (error) 1713100979Srwatson return (error); 1714100979Srwatson 1715100979Srwatson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 1716100979Srwatson return (error); 1717100979Srwatson} 1718100979Srwatson 1719100979Srwatsonint 1720100979Srwatsonmac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 1721100979Srwatson int attrnamespace, const char *name, struct uio *uio) 1722100979Srwatson{ 1723100979Srwatson int error; 1724100979Srwatson 1725100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 1726100979Srwatson 1727100979Srwatson if (!mac_enforce_fs) 1728100979Srwatson return (0); 1729100979Srwatson 1730100979Srwatson error = vn_refreshlabel(vp, cred); 1731100979Srwatson if (error) 1732100979Srwatson return (error); 1733100979Srwatson 1734100979Srwatson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 1735100979Srwatson attrnamespace, name, uio); 1736100979Srwatson return (error); 1737100979Srwatson} 1738100979Srwatson 1739100979Srwatsonint 1740100979Srwatsonmac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 1741100979Srwatson struct componentname *cnp) 1742100979Srwatson{ 1743100979Srwatson int error; 1744100979Srwatson 1745100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 1746100979Srwatson 1747100979Srwatson if (!mac_enforce_fs) 1748100979Srwatson return (0); 1749100979Srwatson 1750100979Srwatson error = vn_refreshlabel(dvp, cred); 1751100979Srwatson if (error) 1752100979Srwatson return (error); 1753100979Srwatson 1754100979Srwatson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 1755100979Srwatson return (error); 1756100979Srwatson} 1757100979Srwatson 1758100979Srwatsonvm_prot_t 1759100979Srwatsonmac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 1760100979Srwatson{ 1761100979Srwatson vm_prot_t result = VM_PROT_ALL; 1762100979Srwatson 1763100979Srwatson /* 1764100979Srwatson * This should be some sort of MAC_BITWISE, maybe :) 1765100979Srwatson */ 1766100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 1767100979Srwatson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 1768100979Srwatson newmapping); 1769100979Srwatson return (result); 1770100979Srwatson} 1771100979Srwatson 1772100979Srwatsonint 1773102112Srwatsonmac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 1774100979Srwatson{ 1775100979Srwatson int error; 1776100979Srwatson 1777102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 1778102112Srwatson 1779100979Srwatson if (!mac_enforce_fs) 1780100979Srwatson return (0); 1781100979Srwatson 1782102112Srwatson error = vn_refreshlabel(vp, cred); 1783102112Srwatson if (error) 1784102112Srwatson return (error); 1785100979Srwatson 1786102112Srwatson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 1787102112Srwatson return (error); 1788102112Srwatson} 1789102112Srwatson 1790102112Srwatsonint 1791102112Srwatsonmac_check_vnode_poll(struct ucred *cred, struct vnode *vp) 1792102112Srwatson{ 1793102112Srwatson int error; 1794102112Srwatson 1795102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 1796102112Srwatson 1797102112Srwatson if (!mac_enforce_fs) 1798102112Srwatson return (0); 1799102112Srwatson 1800100979Srwatson error = vn_refreshlabel(vp, cred); 1801100979Srwatson if (error) 1802100979Srwatson return (error); 1803100979Srwatson 1804102112Srwatson MAC_CHECK(check_vnode_poll, cred, vp, &vp->v_label); 1805100979Srwatson 1806100979Srwatson return (error); 1807100979Srwatson} 1808100979Srwatson 1809100979Srwatsonint 1810102112Srwatsonmac_check_vnode_read(struct ucred *cred, struct vnode *vp) 1811100979Srwatson{ 1812100979Srwatson int error; 1813100979Srwatson 1814102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 1815100979Srwatson 1816100979Srwatson if (!mac_enforce_fs) 1817100979Srwatson return (0); 1818100979Srwatson 1819100979Srwatson error = vn_refreshlabel(vp, cred); 1820100979Srwatson if (error) 1821100979Srwatson return (error); 1822100979Srwatson 1823102112Srwatson MAC_CHECK(check_vnode_read, cred, vp, &vp->v_label); 1824102112Srwatson 1825100979Srwatson return (error); 1826100979Srwatson} 1827100979Srwatson 1828100979Srwatsonint 1829100979Srwatsonmac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 1830100979Srwatson{ 1831100979Srwatson int error; 1832100979Srwatson 1833100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 1834100979Srwatson 1835100979Srwatson if (!mac_enforce_fs) 1836100979Srwatson return (0); 1837100979Srwatson 1838100979Srwatson error = vn_refreshlabel(dvp, cred); 1839100979Srwatson if (error) 1840100979Srwatson return (error); 1841100979Srwatson 1842100979Srwatson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 1843100979Srwatson return (error); 1844100979Srwatson} 1845100979Srwatson 1846100979Srwatsonint 1847100979Srwatsonmac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 1848100979Srwatson{ 1849100979Srwatson int error; 1850100979Srwatson 1851100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 1852100979Srwatson 1853100979Srwatson if (!mac_enforce_fs) 1854100979Srwatson return (0); 1855100979Srwatson 1856100979Srwatson error = vn_refreshlabel(vp, cred); 1857100979Srwatson if (error) 1858100979Srwatson return (error); 1859100979Srwatson 1860100979Srwatson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 1861100979Srwatson return (error); 1862100979Srwatson} 1863100979Srwatson 1864100979Srwatsonstatic int 1865100979Srwatsonmac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 1866100979Srwatson struct label *newlabel) 1867100979Srwatson{ 1868100979Srwatson int error; 1869100979Srwatson 1870100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 1871100979Srwatson 1872100979Srwatson error = vn_refreshlabel(vp, cred); 1873100979Srwatson if (error) 1874100979Srwatson return (error); 1875100979Srwatson 1876100979Srwatson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 1877100979Srwatson 1878100979Srwatson return (error); 1879100979Srwatson} 1880100979Srwatson 1881100979Srwatsonint 1882100979Srwatsonmac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 1883100979Srwatson struct vnode *vp, struct componentname *cnp) 1884100979Srwatson{ 1885100979Srwatson int error; 1886100979Srwatson 1887100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 1888100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 1889100979Srwatson 1890100979Srwatson if (!mac_enforce_fs) 1891100979Srwatson return (0); 1892100979Srwatson 1893100979Srwatson error = vn_refreshlabel(dvp, cred); 1894100979Srwatson if (error) 1895100979Srwatson return (error); 1896100979Srwatson error = vn_refreshlabel(vp, cred); 1897100979Srwatson if (error) 1898100979Srwatson return (error); 1899100979Srwatson 1900100979Srwatson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 1901100979Srwatson &vp->v_label, cnp); 1902100979Srwatson return (error); 1903100979Srwatson} 1904100979Srwatson 1905100979Srwatsonint 1906100979Srwatsonmac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 1907100979Srwatson struct vnode *vp, int samedir, struct componentname *cnp) 1908100979Srwatson{ 1909100979Srwatson int error; 1910100979Srwatson 1911100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 1912100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 1913100979Srwatson 1914100979Srwatson if (!mac_enforce_fs) 1915100979Srwatson return (0); 1916100979Srwatson 1917100979Srwatson error = vn_refreshlabel(dvp, cred); 1918100979Srwatson if (error) 1919100979Srwatson return (error); 1920100979Srwatson if (vp != NULL) { 1921100979Srwatson error = vn_refreshlabel(vp, cred); 1922100979Srwatson if (error) 1923100979Srwatson return (error); 1924100979Srwatson } 1925100979Srwatson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 1926100979Srwatson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 1927100979Srwatson return (error); 1928100979Srwatson} 1929100979Srwatson 1930100979Srwatsonint 1931100979Srwatsonmac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 1932100979Srwatson{ 1933100979Srwatson int error; 1934100979Srwatson 1935100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 1936100979Srwatson 1937100979Srwatson if (!mac_enforce_fs) 1938100979Srwatson return (0); 1939100979Srwatson 1940100979Srwatson error = vn_refreshlabel(vp, cred); 1941100979Srwatson if (error) 1942100979Srwatson return (error); 1943100979Srwatson 1944100979Srwatson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 1945100979Srwatson return (error); 1946100979Srwatson} 1947100979Srwatson 1948100979Srwatsonint 1949100979Srwatsonmac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 1950100979Srwatson struct acl *acl) 1951100979Srwatson{ 1952100979Srwatson int error; 1953100979Srwatson 1954100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 1955100979Srwatson 1956100979Srwatson if (!mac_enforce_fs) 1957100979Srwatson return (0); 1958100979Srwatson 1959100979Srwatson error = vn_refreshlabel(vp, cred); 1960100979Srwatson if (error) 1961100979Srwatson return (error); 1962100979Srwatson 1963100979Srwatson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 1964100979Srwatson return (error); 1965100979Srwatson} 1966100979Srwatson 1967100979Srwatsonint 1968100979Srwatsonmac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 1969100979Srwatson int attrnamespace, const char *name, struct uio *uio) 1970100979Srwatson{ 1971100979Srwatson int error; 1972100979Srwatson 1973100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 1974100979Srwatson 1975100979Srwatson if (!mac_enforce_fs) 1976100979Srwatson return (0); 1977100979Srwatson 1978100979Srwatson error = vn_refreshlabel(vp, cred); 1979100979Srwatson if (error) 1980100979Srwatson return (error); 1981100979Srwatson 1982100979Srwatson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 1983100979Srwatson attrnamespace, name, uio); 1984100979Srwatson return (error); 1985100979Srwatson} 1986100979Srwatson 1987100979Srwatsonint 1988100979Srwatsonmac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 1989100979Srwatson{ 1990100979Srwatson int error; 1991100979Srwatson 1992100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 1993100979Srwatson 1994100979Srwatson if (!mac_enforce_fs) 1995100979Srwatson return (0); 1996100979Srwatson 1997100979Srwatson error = vn_refreshlabel(vp, cred); 1998100979Srwatson if (error) 1999100979Srwatson return (error); 2000100979Srwatson 2001100979Srwatson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 2002100979Srwatson return (error); 2003100979Srwatson} 2004100979Srwatson 2005100979Srwatsonint 2006100979Srwatsonmac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 2007100979Srwatson{ 2008100979Srwatson int error; 2009100979Srwatson 2010100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 2011100979Srwatson 2012100979Srwatson if (!mac_enforce_fs) 2013100979Srwatson return (0); 2014100979Srwatson 2015100979Srwatson error = vn_refreshlabel(vp, cred); 2016100979Srwatson if (error) 2017100979Srwatson return (error); 2018100979Srwatson 2019100979Srwatson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 2020100979Srwatson return (error); 2021100979Srwatson} 2022100979Srwatson 2023100979Srwatsonint 2024100979Srwatsonmac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 2025100979Srwatson gid_t gid) 2026100979Srwatson{ 2027100979Srwatson int error; 2028100979Srwatson 2029100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 2030100979Srwatson 2031100979Srwatson if (!mac_enforce_fs) 2032100979Srwatson return (0); 2033100979Srwatson 2034100979Srwatson error = vn_refreshlabel(vp, cred); 2035100979Srwatson if (error) 2036100979Srwatson return (error); 2037100979Srwatson 2038100979Srwatson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 2039100979Srwatson return (error); 2040100979Srwatson} 2041100979Srwatson 2042100979Srwatsonint 2043100979Srwatsonmac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 2044100979Srwatson struct timespec atime, struct timespec mtime) 2045100979Srwatson{ 2046100979Srwatson int error; 2047100979Srwatson 2048100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 2049100979Srwatson 2050100979Srwatson if (!mac_enforce_fs) 2051100979Srwatson return (0); 2052100979Srwatson 2053100979Srwatson error = vn_refreshlabel(vp, cred); 2054100979Srwatson if (error) 2055100979Srwatson return (error); 2056100979Srwatson 2057100979Srwatson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 2058100979Srwatson mtime); 2059100979Srwatson return (error); 2060100979Srwatson} 2061100979Srwatson 2062100979Srwatsonint 2063100979Srwatsonmac_check_vnode_stat(struct ucred *cred, struct vnode *vp) 2064100979Srwatson{ 2065100979Srwatson int error; 2066100979Srwatson 2067100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 2068100979Srwatson 2069100979Srwatson if (!mac_enforce_fs) 2070100979Srwatson return (0); 2071100979Srwatson 2072100979Srwatson error = vn_refreshlabel(vp, cred); 2073100979Srwatson if (error) 2074100979Srwatson return (error); 2075100979Srwatson 2076100979Srwatson MAC_CHECK(check_vnode_stat, cred, vp, &vp->v_label); 2077100979Srwatson return (error); 2078100979Srwatson} 2079100979Srwatson 2080102112Srwatsonint 2081102112Srwatsonmac_check_vnode_write(struct ucred *cred, struct vnode *vp) 2082102112Srwatson{ 2083102112Srwatson int error; 2084102112Srwatson 2085102112Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 2086102112Srwatson 2087102112Srwatson if (!mac_enforce_fs) 2088102112Srwatson return (0); 2089102112Srwatson 2090102112Srwatson error = vn_refreshlabel(vp, cred); 2091102112Srwatson if (error) 2092102112Srwatson return (error); 2093102112Srwatson 2094102112Srwatson MAC_CHECK(check_vnode_write, cred, vp, &vp->v_label); 2095102112Srwatson 2096102112Srwatson return (error); 2097102112Srwatson} 2098102112Srwatson 2099102112Srwatson 2100100979Srwatson/* 2101100979Srwatson * When relabeling a process, call out to the policies for the maximum 2102100979Srwatson * permission allowed for each object type we know about in its 2103100979Srwatson * memory space, and revoke access (in the least surprising ways we 2104100979Srwatson * know) when necessary. The process lock is not held here. 2105100979Srwatson */ 2106100979Srwatsonstatic void 2107100979Srwatsonmac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 2108100979Srwatson{ 2109100979Srwatson 2110100979Srwatson /* XXX freeze all other threads */ 2111100979Srwatson mtx_lock(&Giant); 2112100979Srwatson mac_cred_mmapped_drop_perms_recurse(td, cred, 2113100979Srwatson &td->td_proc->p_vmspace->vm_map); 2114100979Srwatson mtx_unlock(&Giant); 2115100979Srwatson /* XXX allow other threads to continue */ 2116100979Srwatson} 2117100979Srwatson 2118100979Srwatsonstatic __inline const char * 2119100979Srwatsonprot2str(vm_prot_t prot) 2120100979Srwatson{ 2121100979Srwatson 2122100979Srwatson switch (prot & VM_PROT_ALL) { 2123100979Srwatson case VM_PROT_READ: 2124100979Srwatson return ("r--"); 2125100979Srwatson case VM_PROT_READ | VM_PROT_WRITE: 2126100979Srwatson return ("rw-"); 2127100979Srwatson case VM_PROT_READ | VM_PROT_EXECUTE: 2128100979Srwatson return ("r-x"); 2129100979Srwatson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 2130100979Srwatson return ("rwx"); 2131100979Srwatson case VM_PROT_WRITE: 2132100979Srwatson return ("-w-"); 2133100979Srwatson case VM_PROT_EXECUTE: 2134100979Srwatson return ("--x"); 2135100979Srwatson case VM_PROT_WRITE | VM_PROT_EXECUTE: 2136100979Srwatson return ("-wx"); 2137100979Srwatson default: 2138100979Srwatson return ("---"); 2139100979Srwatson } 2140100979Srwatson} 2141100979Srwatson 2142100979Srwatsonstatic void 2143100979Srwatsonmac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 2144100979Srwatson struct vm_map *map) 2145100979Srwatson{ 2146100979Srwatson struct vm_map_entry *vme; 2147100979Srwatson vm_prot_t result, revokeperms; 2148100979Srwatson vm_object_t object; 2149100979Srwatson vm_ooffset_t offset; 2150100979Srwatson struct vnode *vp; 2151100979Srwatson 2152100979Srwatson vm_map_lock_read(map); 2153100979Srwatson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 2154100979Srwatson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 2155100979Srwatson mac_cred_mmapped_drop_perms_recurse(td, cred, 2156100979Srwatson vme->object.sub_map); 2157100979Srwatson continue; 2158100979Srwatson } 2159100979Srwatson /* 2160100979Srwatson * Skip over entries that obviously are not shared. 2161100979Srwatson */ 2162100979Srwatson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 2163100979Srwatson !vme->max_protection) 2164100979Srwatson continue; 2165100979Srwatson /* 2166100979Srwatson * Drill down to the deepest backing object. 2167100979Srwatson */ 2168100979Srwatson offset = vme->offset; 2169100979Srwatson object = vme->object.vm_object; 2170100979Srwatson if (object == NULL) 2171100979Srwatson continue; 2172100979Srwatson while (object->backing_object != NULL) { 2173100979Srwatson object = object->backing_object; 2174100979Srwatson offset += object->backing_object_offset; 2175100979Srwatson } 2176100979Srwatson /* 2177100979Srwatson * At the moment, vm_maps and objects aren't considered 2178100979Srwatson * by the MAC system, so only things with backing by a 2179100979Srwatson * normal object (read: vnodes) are checked. 2180100979Srwatson */ 2181100979Srwatson if (object->type != OBJT_VNODE) 2182100979Srwatson continue; 2183100979Srwatson vp = (struct vnode *)object->handle; 2184100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 2185100979Srwatson result = mac_check_vnode_mmap_prot(cred, vp, 0); 2186100979Srwatson VOP_UNLOCK(vp, 0, td); 2187100979Srwatson /* 2188100979Srwatson * Find out what maximum protection we may be allowing 2189100979Srwatson * now but a policy needs to get removed. 2190100979Srwatson */ 2191100979Srwatson revokeperms = vme->max_protection & ~result; 2192100979Srwatson if (!revokeperms) 2193100979Srwatson continue; 2194100979Srwatson printf("pid %d: revoking %s perms from %#lx:%d " 2195100979Srwatson "(max %s/cur %s)\n", td->td_proc->p_pid, 2196100979Srwatson prot2str(revokeperms), vme->start, vme->end - vme->start, 2197100979Srwatson prot2str(vme->max_protection), prot2str(vme->protection)); 2198100979Srwatson vm_map_lock_upgrade(map); 2199100979Srwatson /* 2200100979Srwatson * This is the really simple case: if a map has more 2201100979Srwatson * max_protection than is allowed, but it's not being 2202100979Srwatson * actually used (that is, the current protection is 2203100979Srwatson * still allowed), we can just wipe it out and do 2204100979Srwatson * nothing more. 2205100979Srwatson */ 2206100979Srwatson if ((vme->protection & revokeperms) == 0) { 2207100979Srwatson vme->max_protection -= revokeperms; 2208100979Srwatson } else { 2209100979Srwatson if (revokeperms & VM_PROT_WRITE) { 2210100979Srwatson /* 2211100979Srwatson * In the more complicated case, flush out all 2212100979Srwatson * pending changes to the object then turn it 2213100979Srwatson * copy-on-write. 2214100979Srwatson */ 2215100979Srwatson vm_object_reference(object); 2216100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 2217100979Srwatson vm_object_page_clean(object, 2218100979Srwatson OFF_TO_IDX(offset), 2219100979Srwatson OFF_TO_IDX(offset + vme->end - vme->start + 2220100979Srwatson PAGE_MASK), 2221100979Srwatson OBJPC_SYNC); 2222100979Srwatson VOP_UNLOCK(vp, 0, td); 2223100979Srwatson vm_object_deallocate(object); 2224100979Srwatson /* 2225100979Srwatson * Why bother if there's no read permissions 2226100979Srwatson * anymore? For the rest, we need to leave 2227100979Srwatson * the write permissions on for COW, or 2228100979Srwatson * remove them entirely if configured to. 2229100979Srwatson */ 2230100979Srwatson if (!mac_mmap_revocation_via_cow) { 2231100979Srwatson vme->max_protection &= ~VM_PROT_WRITE; 2232100979Srwatson vme->protection &= ~VM_PROT_WRITE; 2233100979Srwatson } if ((revokeperms & VM_PROT_READ) == 0) 2234100979Srwatson vme->eflags |= MAP_ENTRY_COW | 2235100979Srwatson MAP_ENTRY_NEEDS_COPY; 2236100979Srwatson } 2237100979Srwatson if (revokeperms & VM_PROT_EXECUTE) { 2238100979Srwatson vme->max_protection &= ~VM_PROT_EXECUTE; 2239100979Srwatson vme->protection &= ~VM_PROT_EXECUTE; 2240100979Srwatson } 2241100979Srwatson if (revokeperms & VM_PROT_READ) { 2242100979Srwatson vme->max_protection = 0; 2243100979Srwatson vme->protection = 0; 2244100979Srwatson } 2245100979Srwatson pmap_protect(map->pmap, vme->start, vme->end, 2246100979Srwatson vme->protection & ~revokeperms); 2247100979Srwatson vm_map_simplify_entry(map, vme); 2248100979Srwatson } 2249100979Srwatson vm_map_lock_downgrade(map); 2250100979Srwatson } 2251100979Srwatson vm_map_unlock_read(map); 2252100979Srwatson} 2253100979Srwatson 2254100979Srwatson/* 2255100979Srwatson * When the subject's label changes, it may require revocation of privilege 2256100979Srwatson * to mapped objects. This can't be done on-the-fly later with a unified 2257100979Srwatson * buffer cache. 2258100979Srwatson */ 2259100979Srwatsonstatic void 2260100979Srwatsonmac_relabel_cred(struct ucred *cred, struct label *newlabel) 2261100979Srwatson{ 2262100979Srwatson 2263100979Srwatson MAC_PERFORM(relabel_cred, cred, newlabel); 2264100979Srwatson mac_cred_mmapped_drop_perms(curthread, cred); 2265100979Srwatson} 2266100979Srwatson 2267100979Srwatsonvoid 2268100979Srwatsonmac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 2269100979Srwatson{ 2270100979Srwatson 2271100979Srwatson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 2272100979Srwatson} 2273100979Srwatson 2274100979Srwatsonvoid 2275100979Srwatsonmac_create_ifnet(struct ifnet *ifnet) 2276100979Srwatson{ 2277100979Srwatson 2278100979Srwatson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 2279100979Srwatson} 2280100979Srwatson 2281100979Srwatsonvoid 2282100979Srwatsonmac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 2283100979Srwatson{ 2284100979Srwatson 2285100979Srwatson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 2286100979Srwatson} 2287100979Srwatson 2288100979Srwatsonvoid 2289100979Srwatsonmac_create_socket(struct ucred *cred, struct socket *socket) 2290100979Srwatson{ 2291100979Srwatson 2292100979Srwatson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 2293100979Srwatson} 2294100979Srwatson 2295100979Srwatsonvoid 2296100979Srwatsonmac_create_pipe(struct ucred *cred, struct pipe *pipe) 2297100979Srwatson{ 2298100979Srwatson 2299100979Srwatson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 2300100979Srwatson} 2301100979Srwatson 2302100979Srwatsonvoid 2303100979Srwatsonmac_create_socket_from_socket(struct socket *oldsocket, 2304100979Srwatson struct socket *newsocket) 2305100979Srwatson{ 2306100979Srwatson 2307100979Srwatson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 2308100979Srwatson newsocket, &newsocket->so_label); 2309100979Srwatson} 2310100979Srwatson 2311100979Srwatsonstatic void 2312100979Srwatsonmac_relabel_socket(struct ucred *cred, struct socket *socket, 2313100979Srwatson struct label *newlabel) 2314100979Srwatson{ 2315100979Srwatson 2316100979Srwatson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 2317100979Srwatson} 2318100979Srwatson 2319100979Srwatsonstatic void 2320100979Srwatsonmac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 2321100979Srwatson{ 2322100979Srwatson 2323100979Srwatson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 2324100979Srwatson} 2325100979Srwatson 2326100979Srwatsonvoid 2327100979Srwatsonmac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 2328100979Srwatson{ 2329100979Srwatson 2330100979Srwatson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 2331100979Srwatson socket, &socket->so_peerlabel); 2332100979Srwatson} 2333100979Srwatson 2334100979Srwatsonvoid 2335100979Srwatsonmac_set_socket_peer_from_socket(struct socket *oldsocket, 2336100979Srwatson struct socket *newsocket) 2337100979Srwatson{ 2338100979Srwatson 2339100979Srwatson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 2340100979Srwatson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 2341100979Srwatson} 2342100979Srwatson 2343100979Srwatsonvoid 2344100979Srwatsonmac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 2345100979Srwatson{ 2346100979Srwatson 2347100979Srwatson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 2348100979Srwatson datagram, &datagram->m_pkthdr.label); 2349100979Srwatson} 2350100979Srwatson 2351100979Srwatsonvoid 2352100979Srwatsonmac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 2353100979Srwatson{ 2354100979Srwatson 2355100979Srwatson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 2356100979Srwatson fragment, &fragment->m_pkthdr.label); 2357100979Srwatson} 2358100979Srwatson 2359100979Srwatsonvoid 2360100979Srwatsonmac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 2361100979Srwatson{ 2362100979Srwatson 2363100979Srwatson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 2364100979Srwatson &ipq->ipq_label); 2365100979Srwatson} 2366100979Srwatson 2367100979Srwatsonvoid 2368100979Srwatsonmac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 2369100979Srwatson{ 2370100979Srwatson 2371100979Srwatson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 2372100979Srwatson newmbuf, &newmbuf->m_pkthdr.label); 2373100979Srwatson} 2374100979Srwatson 2375100979Srwatsonvoid 2376100979Srwatsonmac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 2377100979Srwatson{ 2378100979Srwatson 2379100979Srwatson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 2380100979Srwatson &mbuf->m_pkthdr.label); 2381100979Srwatson} 2382100979Srwatson 2383100979Srwatsonvoid 2384100979Srwatsonmac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 2385100979Srwatson{ 2386100979Srwatson 2387100979Srwatson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 2388100979Srwatson &mbuf->m_pkthdr.label); 2389100979Srwatson} 2390100979Srwatson 2391100979Srwatsonvoid 2392100979Srwatsonmac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 2393100979Srwatson{ 2394100979Srwatson 2395100979Srwatson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 2396100979Srwatson &mbuf->m_pkthdr.label); 2397100979Srwatson} 2398100979Srwatson 2399100979Srwatsonvoid 2400100979Srwatsonmac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 2401100979Srwatson struct mbuf *newmbuf) 2402100979Srwatson{ 2403100979Srwatson 2404100979Srwatson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 2405100979Srwatson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 2406100979Srwatson &newmbuf->m_pkthdr.label); 2407100979Srwatson} 2408100979Srwatson 2409100979Srwatsonvoid 2410100979Srwatsonmac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 2411100979Srwatson{ 2412100979Srwatson 2413100979Srwatson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 2414100979Srwatson newmbuf, &newmbuf->m_pkthdr.label); 2415100979Srwatson} 2416100979Srwatson 2417100979Srwatsonint 2418100979Srwatsonmac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 2419100979Srwatson{ 2420100979Srwatson int result; 2421100979Srwatson 2422100979Srwatson result = 1; 2423100979Srwatson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 2424100979Srwatson ipq, &ipq->ipq_label); 2425100979Srwatson 2426100979Srwatson return (result); 2427100979Srwatson} 2428100979Srwatson 2429100979Srwatsonvoid 2430100979Srwatsonmac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 2431100979Srwatson{ 2432100979Srwatson 2433100979Srwatson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 2434100979Srwatson &ipq->ipq_label); 2435100979Srwatson} 2436100979Srwatson 2437100979Srwatsonvoid 2438100979Srwatsonmac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 2439100979Srwatson{ 2440100979Srwatson 2441100979Srwatson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 2442100979Srwatson &mbuf->m_pkthdr.label); 2443100979Srwatson} 2444100979Srwatson 2445100979Srwatsonvoid 2446100979Srwatsonmac_create_mount(struct ucred *cred, struct mount *mp) 2447100979Srwatson{ 2448100979Srwatson 2449100979Srwatson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 2450100979Srwatson &mp->mnt_fslabel); 2451100979Srwatson} 2452100979Srwatson 2453100979Srwatsonvoid 2454100979Srwatsonmac_create_root_mount(struct ucred *cred, struct mount *mp) 2455100979Srwatson{ 2456100979Srwatson 2457100979Srwatson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 2458100979Srwatson &mp->mnt_fslabel); 2459100979Srwatson} 2460100979Srwatson 2461100979Srwatsonint 2462100979Srwatsonmac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 2463100979Srwatson{ 2464100979Srwatson int error; 2465100979Srwatson 2466100979Srwatson if (!mac_enforce_network) 2467100979Srwatson return (0); 2468100979Srwatson 2469100979Srwatson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 2470100979Srwatson &ifnet->if_label); 2471100979Srwatson 2472100979Srwatson return (error); 2473100979Srwatson} 2474100979Srwatson 2475100979Srwatsonstatic int 2476100979Srwatsonmac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 2477100979Srwatson{ 2478100979Srwatson int error; 2479100979Srwatson 2480100979Srwatson MAC_CHECK(check_cred_relabel, cred, newlabel); 2481100979Srwatson 2482100979Srwatson return (error); 2483100979Srwatson} 2484100979Srwatson 2485100979Srwatsonint 2486100979Srwatsonmac_check_cred_visible(struct ucred *u1, struct ucred *u2) 2487100979Srwatson{ 2488100979Srwatson int error; 2489100979Srwatson 2490100979Srwatson if (!mac_enforce_process) 2491100979Srwatson return (0); 2492100979Srwatson 2493100979Srwatson MAC_CHECK(check_cred_visible, u1, u2); 2494100979Srwatson 2495100979Srwatson return (error); 2496100979Srwatson} 2497100979Srwatson 2498100979Srwatsonint 2499100979Srwatsonmac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 2500100979Srwatson{ 2501100979Srwatson int error; 2502100979Srwatson 2503100979Srwatson if (!mac_enforce_network) 2504100979Srwatson return (0); 2505100979Srwatson 2506100979Srwatson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 2507100979Srwatson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 2508100979Srwatson printf("%s%d: not initialized\n", ifnet->if_name, 2509100979Srwatson ifnet->if_unit); 2510100979Srwatson 2511100979Srwatson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 2512100979Srwatson &mbuf->m_pkthdr.label); 2513100979Srwatson 2514100979Srwatson return (error); 2515100979Srwatson} 2516100979Srwatson 2517100979Srwatsonint 2518100979Srwatsonmac_check_mount_stat(struct ucred *cred, struct mount *mount) 2519100979Srwatson{ 2520100979Srwatson int error; 2521100979Srwatson 2522100979Srwatson if (!mac_enforce_fs) 2523100979Srwatson return (0); 2524100979Srwatson 2525100979Srwatson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 2526100979Srwatson 2527100979Srwatson return (error); 2528100979Srwatson} 2529100979Srwatson 2530100979Srwatsonint 2531100979Srwatsonmac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 2532100979Srwatson void *data) 2533100979Srwatson{ 2534100979Srwatson int error; 2535100979Srwatson 2536100979Srwatson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 2537100979Srwatson 2538100979Srwatson return (error); 2539100979Srwatson} 2540100979Srwatson 2541100979Srwatsonint 2542100979Srwatsonmac_check_pipe_op(struct ucred *cred, struct pipe *pipe, int op) 2543100979Srwatson{ 2544100979Srwatson int error; 2545100979Srwatson 2546100979Srwatson MAC_CHECK(check_pipe_op, cred, pipe, pipe->pipe_label, op); 2547100979Srwatson 2548100979Srwatson return (error); 2549100979Srwatson} 2550100979Srwatson 2551100979Srwatsonstatic int 2552100979Srwatsonmac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 2553100979Srwatson struct label *newlabel) 2554100979Srwatson{ 2555100979Srwatson int error; 2556100979Srwatson 2557100979Srwatson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 2558100979Srwatson 2559100979Srwatson return (error); 2560100979Srwatson} 2561100979Srwatson 2562100979Srwatsonint 2563100979Srwatsonmac_check_proc_debug(struct ucred *cred, struct proc *proc) 2564100979Srwatson{ 2565100979Srwatson int error; 2566100979Srwatson 2567102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2568102103Srwatson 2569100979Srwatson if (!mac_enforce_process) 2570100979Srwatson return (0); 2571100979Srwatson 2572100979Srwatson MAC_CHECK(check_proc_debug, cred, proc); 2573100979Srwatson 2574100979Srwatson return (error); 2575100979Srwatson} 2576100979Srwatson 2577100979Srwatsonint 2578100979Srwatsonmac_check_proc_sched(struct ucred *cred, struct proc *proc) 2579100979Srwatson{ 2580100979Srwatson int error; 2581100979Srwatson 2582102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2583102103Srwatson 2584100979Srwatson if (!mac_enforce_process) 2585100979Srwatson return (0); 2586100979Srwatson 2587100979Srwatson MAC_CHECK(check_proc_sched, cred, proc); 2588100979Srwatson 2589100979Srwatson return (error); 2590100979Srwatson} 2591100979Srwatson 2592100979Srwatsonint 2593100979Srwatsonmac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 2594100979Srwatson{ 2595100979Srwatson int error; 2596100979Srwatson 2597102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2598102103Srwatson 2599100979Srwatson if (!mac_enforce_process) 2600100979Srwatson return (0); 2601100979Srwatson 2602100979Srwatson MAC_CHECK(check_proc_signal, cred, proc, signum); 2603100979Srwatson 2604100979Srwatson return (error); 2605100979Srwatson} 2606100979Srwatson 2607100979Srwatsonint 2608100979Srwatsonmac_check_socket_bind(struct ucred *ucred, struct socket *socket, 2609100979Srwatson struct sockaddr *sockaddr) 2610100979Srwatson{ 2611100979Srwatson int error; 2612100979Srwatson 2613100979Srwatson if (!mac_enforce_socket) 2614100979Srwatson return (0); 2615100979Srwatson 2616100979Srwatson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 2617100979Srwatson sockaddr); 2618100979Srwatson 2619100979Srwatson return (error); 2620100979Srwatson} 2621100979Srwatson 2622100979Srwatsonint 2623100979Srwatsonmac_check_socket_connect(struct ucred *cred, struct socket *socket, 2624100979Srwatson struct sockaddr *sockaddr) 2625100979Srwatson{ 2626100979Srwatson int error; 2627100979Srwatson 2628100979Srwatson if (!mac_enforce_socket) 2629100979Srwatson return (0); 2630100979Srwatson 2631100979Srwatson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 2632100979Srwatson sockaddr); 2633100979Srwatson 2634100979Srwatson return (error); 2635100979Srwatson} 2636100979Srwatson 2637100979Srwatsonint 2638101933Srwatsonmac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2639100979Srwatson{ 2640100979Srwatson int error; 2641100979Srwatson 2642100979Srwatson if (!mac_enforce_socket) 2643100979Srwatson return (0); 2644100979Srwatson 2645101933Srwatson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2646101933Srwatson &mbuf->m_pkthdr.label); 2647101933Srwatson 2648100979Srwatson return (error); 2649100979Srwatson} 2650100979Srwatson 2651100979Srwatsonint 2652101933Srwatsonmac_check_socket_listen(struct ucred *cred, struct socket *socket) 2653100979Srwatson{ 2654100979Srwatson int error; 2655100979Srwatson 2656100979Srwatson if (!mac_enforce_socket) 2657100979Srwatson return (0); 2658100979Srwatson 2659101933Srwatson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 2660100979Srwatson return (error); 2661100979Srwatson} 2662100979Srwatson 2663100979Srwatsonstatic int 2664100979Srwatsonmac_check_socket_relabel(struct ucred *cred, struct socket *socket, 2665100979Srwatson struct label *newlabel) 2666100979Srwatson{ 2667100979Srwatson int error; 2668100979Srwatson 2669100979Srwatson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 2670100979Srwatson newlabel); 2671100979Srwatson 2672100979Srwatson return (error); 2673100979Srwatson} 2674100979Srwatson 2675100979Srwatsonint 2676100979Srwatsonmac_check_socket_visible(struct ucred *cred, struct socket *socket) 2677100979Srwatson{ 2678100979Srwatson int error; 2679100979Srwatson 2680100979Srwatson if (!mac_enforce_socket) 2681100979Srwatson return (0); 2682100979Srwatson 2683100979Srwatson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 2684100979Srwatson 2685100979Srwatson return (error); 2686100979Srwatson} 2687100979Srwatson 2688100979Srwatsonint 2689100979Srwatsonmac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 2690100979Srwatson struct ifnet *ifnet) 2691100979Srwatson{ 2692100979Srwatson struct mac label; 2693100979Srwatson int error; 2694100979Srwatson 2695100979Srwatson error = mac_externalize(&ifnet->if_label, &label); 2696100979Srwatson if (error) 2697100979Srwatson return (error); 2698100979Srwatson 2699100979Srwatson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 2700100979Srwatson} 2701100979Srwatson 2702100979Srwatsonint 2703100979Srwatsonmac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 2704100979Srwatson struct ifnet *ifnet) 2705100979Srwatson{ 2706100979Srwatson struct mac newlabel; 2707100979Srwatson struct label intlabel; 2708100979Srwatson int error; 2709100979Srwatson 2710100979Srwatson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 2711100979Srwatson if (error) 2712100979Srwatson return (error); 2713100979Srwatson 2714100979Srwatson error = mac_internalize(&intlabel, &newlabel); 2715100979Srwatson if (error) 2716100979Srwatson return (error); 2717100979Srwatson 2718100979Srwatson /* 2719100979Srwatson * XXX: Note that this is a redundant privilege check, since 2720100979Srwatson * policies impose this check themselves if required by the 2721100979Srwatson * policy. Eventually, this should go away. 2722100979Srwatson */ 2723100979Srwatson error = suser_cred(cred, 0); 2724100979Srwatson if (error) 2725100979Srwatson goto out; 2726100979Srwatson 2727100979Srwatson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 2728100979Srwatson &intlabel); 2729100979Srwatson if (error) 2730100979Srwatson goto out; 2731100979Srwatson 2732100979Srwatson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 2733100979Srwatson 2734100979Srwatsonout: 2735100979Srwatson mac_destroy_temp(&intlabel); 2736100979Srwatson return (error); 2737100979Srwatson} 2738100979Srwatson 2739100979Srwatsonvoid 2740100979Srwatsonmac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 2741100979Srwatson{ 2742100979Srwatson 2743100979Srwatson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 2744100979Srwatson} 2745100979Srwatson 2746100979Srwatsonvoid 2747100979Srwatsonmac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 2748100979Srwatson{ 2749100979Srwatson 2750100979Srwatson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 2751100979Srwatson} 2752100979Srwatson 2753100979Srwatsonstatic int 2754100979Srwatsonmac_stdcreatevnode_ea(struct vnode *vp) 2755100979Srwatson{ 2756100979Srwatson int error; 2757100979Srwatson 2758100979Srwatson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 2759100979Srwatson 2760100979Srwatson return (error); 2761100979Srwatson} 2762100979Srwatson 2763100979Srwatsonvoid 2764100979Srwatsonmac_create_devfs_directory(char *dirname, int dirnamelen, 2765100979Srwatson struct devfs_dirent *de) 2766100979Srwatson{ 2767100979Srwatson 2768100979Srwatson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 2769100979Srwatson &de->de_label); 2770100979Srwatson} 2771100979Srwatson 2772100979Srwatson/* 2773100979Srwatson * When a new vnode is created, this call will initialize its label. 2774100979Srwatson */ 2775100979Srwatsonvoid 2776100979Srwatsonmac_create_vnode(struct ucred *cred, struct vnode *parent, 2777100979Srwatson struct vnode *child) 2778100979Srwatson{ 2779100979Srwatson int error; 2780100979Srwatson 2781100979Srwatson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 2782100979Srwatson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 2783100979Srwatson 2784100979Srwatson error = vn_refreshlabel(parent, cred); 2785100979Srwatson if (error) { 2786100979Srwatson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 2787100979Srwatson error); 2788100979Srwatson printf("mac_create_vnode: using old vnode label\n"); 2789100979Srwatson } 2790100979Srwatson 2791100979Srwatson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 2792100979Srwatson &child->v_label); 2793100979Srwatson} 2794100979Srwatson 2795100979Srwatsonint 2796100979Srwatsonmac_setsockopt_label_set(struct ucred *cred, struct socket *so, 2797100979Srwatson struct mac *extmac) 2798100979Srwatson{ 2799100979Srwatson struct label intlabel; 2800100979Srwatson int error; 2801100979Srwatson 2802100979Srwatson error = mac_internalize(&intlabel, extmac); 2803100979Srwatson if (error) 2804100979Srwatson return (error); 2805100979Srwatson 2806100979Srwatson mac_check_socket_relabel(cred, so, &intlabel); 2807100979Srwatson if (error) { 2808100979Srwatson mac_destroy_temp(&intlabel); 2809100979Srwatson return (error); 2810100979Srwatson } 2811100979Srwatson 2812100979Srwatson mac_relabel_socket(cred, so, &intlabel); 2813100979Srwatson 2814100979Srwatson mac_destroy_temp(&intlabel); 2815100979Srwatson return (0); 2816100979Srwatson} 2817100979Srwatson 2818100979Srwatsonint 2819100979Srwatsonmac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 2820100979Srwatson{ 2821100979Srwatson int error; 2822100979Srwatson 2823100979Srwatson error = mac_check_pipe_relabel(cred, pipe, label); 2824100979Srwatson if (error) 2825100979Srwatson return (error); 2826100979Srwatson 2827100979Srwatson mac_relabel_pipe(cred, pipe, label); 2828100979Srwatson 2829100979Srwatson return (0); 2830100979Srwatson} 2831100979Srwatson 2832100979Srwatsonint 2833100979Srwatsonmac_getsockopt_label_get(struct ucred *cred, struct socket *so, 2834100979Srwatson struct mac *extmac) 2835100979Srwatson{ 2836100979Srwatson 2837100979Srwatson return (mac_externalize(&so->so_label, extmac)); 2838100979Srwatson} 2839100979Srwatson 2840100979Srwatsonint 2841100979Srwatsonmac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 2842100979Srwatson struct mac *extmac) 2843100979Srwatson{ 2844100979Srwatson 2845100979Srwatson return (mac_externalize(&so->so_peerlabel, extmac)); 2846100979Srwatson} 2847100979Srwatson 2848100979Srwatson/* 2849100979Srwatson * Implementation of VOP_SETLABEL() that relies on extended attributes 2850100979Srwatson * to store label data. Can be referenced by filesystems supporting 2851100979Srwatson * extended attributes. 2852100979Srwatson */ 2853100979Srwatsonint 2854100979Srwatsonvop_stdsetlabel_ea(struct vop_setlabel_args *ap) 2855100979Srwatson{ 2856100979Srwatson struct vnode *vp = ap->a_vp; 2857100979Srwatson struct label *intlabel = ap->a_label; 2858100979Srwatson struct mac extmac; 2859100979Srwatson int error; 2860100979Srwatson 2861100979Srwatson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 2862100979Srwatson 2863100979Srwatson /* 2864100979Srwatson * XXX: Eventually call out to EA check/set calls here. 2865100979Srwatson * Be particularly careful to avoid race conditions, 2866100979Srwatson * consistency problems, and stability problems when 2867100979Srwatson * dealing with multiple EAs. In particular, we require 2868100979Srwatson * the ability to write multiple EAs on the same file in 2869100979Srwatson * a single transaction, which the current EA interface 2870100979Srwatson * does not provide. 2871100979Srwatson */ 2872100979Srwatson 2873100979Srwatson error = mac_externalize(intlabel, &extmac); 2874100979Srwatson if (error) 2875100979Srwatson return (error); 2876100979Srwatson 2877100979Srwatson error = vn_extattr_set(vp, IO_NODELOCKED, 2878100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 2879100979Srwatson sizeof(extmac), (char *)&extmac, curthread); 2880100979Srwatson if (error) 2881100979Srwatson return (error); 2882100979Srwatson 2883100979Srwatson mac_relabel_vnode(ap->a_cred, vp, intlabel); 2884100979Srwatson 2885101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 2886100979Srwatson 2887100979Srwatson return (0); 2888100979Srwatson} 2889100979Srwatson 2890100979Srwatsonstatic int 2891100979Srwatsonvn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 2892100979Srwatson{ 2893100979Srwatson int error; 2894100979Srwatson 2895100979Srwatson if (vp->v_mount == NULL) { 2896100979Srwatson /* printf("vn_setlabel: null v_mount\n"); */ 2897100979Srwatson if (vp->v_tag != VT_NON) 2898100979Srwatson printf("vn_setlabel: null v_mount with non-VT_NON\n"); 2899100979Srwatson return (EBADF); 2900100979Srwatson } 2901100979Srwatson 2902100979Srwatson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 2903100979Srwatson return (EOPNOTSUPP); 2904100979Srwatson 2905100979Srwatson /* 2906100979Srwatson * Multi-phase commit. First check the policies to confirm the 2907100979Srwatson * change is OK. Then commit via the filesystem. Finally, 2908100979Srwatson * update the actual vnode label. Question: maybe the filesystem 2909100979Srwatson * should update the vnode at the end as part of VOP_SETLABEL()? 2910100979Srwatson */ 2911100979Srwatson error = mac_check_vnode_relabel(cred, vp, intlabel); 2912100979Srwatson if (error) 2913100979Srwatson return (error); 2914100979Srwatson 2915100979Srwatson /* 2916100979Srwatson * VADMIN provides the opportunity for the filesystem to make 2917100979Srwatson * decisions about who is and is not able to modify labels 2918100979Srwatson * and protections on files. This might not be right. We can't 2919100979Srwatson * assume VOP_SETLABEL() will do it, because we might implement 2920100979Srwatson * that as part of vop_stdsetlabel_ea(). 2921100979Srwatson */ 2922100979Srwatson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 2923100979Srwatson if (error) 2924100979Srwatson return (error); 2925100979Srwatson 2926100979Srwatson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 2927100979Srwatson if (error) 2928100979Srwatson return (error); 2929100979Srwatson 2930100979Srwatson return (0); 2931100979Srwatson} 2932100979Srwatson 2933100979Srwatson/* 2934100979Srwatson * MPSAFE 2935100979Srwatson */ 2936100979Srwatsonint 2937100894Srwatson__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 2938100894Srwatson{ 2939100979Srwatson struct mac extmac; 2940100979Srwatson int error; 2941100894Srwatson 2942100979Srwatson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 2943100979Srwatson if (error == 0) 2944100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 2945100979Srwatson 2946100979Srwatson return (error); 2947100979Srwatson} 2948100979Srwatson 2949100979Srwatson/* 2950100979Srwatson * MPSAFE 2951100979Srwatson * 2952100979Srwatson * XXX: Needs to be re-written for proc locking. 2953100979Srwatson */ 2954100979Srwatsonint 2955100979Srwatson__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 2956100979Srwatson{ 2957100979Srwatson struct ucred *newcred, *oldcred; 2958100979Srwatson struct proc *p; 2959100979Srwatson struct mac extmac; 2960100979Srwatson struct label intlabel; 2961100979Srwatson int error; 2962100979Srwatson 2963100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 2964100979Srwatson if (error) 2965100979Srwatson return (error); 2966100979Srwatson 2967100979Srwatson error = mac_internalize(&intlabel, &extmac); 2968100979Srwatson if (error) 2969100979Srwatson return (error); 2970100979Srwatson 2971100979Srwatson newcred = crget(); 2972100979Srwatson 2973100979Srwatson p = td->td_proc; 2974100979Srwatson PROC_LOCK(p); 2975100979Srwatson oldcred = p->p_ucred; 2976100979Srwatson 2977100979Srwatson error = mac_check_cred_relabel(oldcred, &intlabel); 2978100979Srwatson if (error) { 2979100979Srwatson PROC_UNLOCK(p); 2980100979Srwatson mac_destroy_temp(&intlabel); 2981100979Srwatson crfree(newcred); 2982100979Srwatson return (error); 2983100979Srwatson } 2984100979Srwatson 2985100979Srwatson setsugid(p); 2986100979Srwatson crcopy(newcred, oldcred); 2987100979Srwatson PROC_UNLOCK(p); 2988100979Srwatson mac_relabel_cred(newcred, &intlabel); 2989100979Srwatson 2990100979Srwatson PROC_LOCK(p); 2991100979Srwatson p->p_ucred = newcred; 2992100979Srwatson PROC_UNLOCK(p); 2993100979Srwatson crfree(oldcred); 2994100979Srwatson mac_destroy_temp(&intlabel); 2995100979Srwatson return (0); 2996100979Srwatson} 2997100979Srwatson 2998100979Srwatson/* 2999100979Srwatson * MPSAFE 3000100979Srwatson */ 3001100979Srwatsonint 3002100979Srwatson__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 3003100979Srwatson{ 3004100979Srwatson struct file *fp; 3005100979Srwatson struct mac extmac; 3006100979Srwatson struct vnode *vp; 3007100979Srwatson struct pipe *pipe; 3008100979Srwatson int error; 3009100979Srwatson 3010100979Srwatson mtx_lock(&Giant); 3011100979Srwatson 3012100979Srwatson error = fget(td, SCARG(uap, fd), &fp); 3013100979Srwatson if (error) 3014100979Srwatson goto out; 3015100979Srwatson 3016100979Srwatson switch (fp->f_type) { 3017100979Srwatson case DTYPE_FIFO: 3018100979Srwatson case DTYPE_VNODE: 3019100979Srwatson vp = (struct vnode *)fp->f_data; 3020100979Srwatson 3021100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 3022100979Srwatson error = vn_refreshlabel(vp, td->td_ucred); 3023100979Srwatson if (error == 0) 3024100979Srwatson error = mac_externalize(&vp->v_label, &extmac); 3025100979Srwatson VOP_UNLOCK(vp, 0, td); 3026100979Srwatson break; 3027100979Srwatson case DTYPE_PIPE: 3028100979Srwatson pipe = (struct pipe *)fp->f_data; 3029100979Srwatson error = mac_externalize(pipe->pipe_label, &extmac); 3030100979Srwatson break; 3031100979Srwatson default: 3032100979Srwatson error = EINVAL; 3033100979Srwatson } 3034100979Srwatson 3035100979Srwatson if (error == 0) 3036100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 3037100979Srwatson 3038100979Srwatson fdrop(fp, td); 3039100979Srwatson 3040100979Srwatsonout: 3041100979Srwatson mtx_unlock(&Giant); 3042100979Srwatson return (error); 3043100979Srwatson} 3044100979Srwatson 3045100979Srwatson/* 3046100979Srwatson * MPSAFE 3047100979Srwatson */ 3048100979Srwatsonint 3049100979Srwatson__mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 3050100979Srwatson{ 3051100979Srwatson struct nameidata nd; 3052100979Srwatson struct mac extmac; 3053100979Srwatson int error; 3054100979Srwatson 3055100979Srwatson mtx_lock(&Giant); 3056100979Srwatson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 3057100979Srwatson SCARG(uap, path_p), td); 3058100979Srwatson error = namei(&nd); 3059100979Srwatson if (error) 3060100979Srwatson goto out; 3061100979Srwatson 3062100979Srwatson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 3063100979Srwatson if (error == 0) 3064100979Srwatson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 3065100979Srwatson NDFREE(&nd, 0); 3066100979Srwatson if (error) 3067100979Srwatson goto out; 3068100979Srwatson 3069100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 3070100979Srwatson 3071100979Srwatsonout: 3072100979Srwatson mtx_unlock(&Giant); 3073100979Srwatson return (error); 3074100979Srwatson} 3075100979Srwatson 3076100979Srwatson/* 3077100979Srwatson * MPSAFE 3078100979Srwatson */ 3079100979Srwatsonint 3080100979Srwatson__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 3081100979Srwatson{ 3082100979Srwatson struct file *fp; 3083100979Srwatson struct mac extmac; 3084100979Srwatson struct label intlabel; 3085100979Srwatson struct mount *mp; 3086100979Srwatson struct vnode *vp; 3087100979Srwatson struct pipe *pipe; 3088100979Srwatson int error; 3089100979Srwatson 3090100979Srwatson mtx_lock(&Giant); 3091100979Srwatson error = fget(td, SCARG(uap, fd), &fp); 3092100979Srwatson if (error) 3093100979Srwatson goto out1; 3094100979Srwatson 3095100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 3096100979Srwatson if (error) 3097100979Srwatson goto out2; 3098100979Srwatson 3099100979Srwatson error = mac_internalize(&intlabel, &extmac); 3100100979Srwatson if (error) 3101100979Srwatson goto out2; 3102100979Srwatson 3103100979Srwatson switch (fp->f_type) { 3104100979Srwatson case DTYPE_FIFO: 3105100979Srwatson case DTYPE_VNODE: 3106100979Srwatson vp = (struct vnode *)fp->f_data; 3107100979Srwatson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 3108100979Srwatson if (error != 0) 3109100979Srwatson break; 3110100979Srwatson 3111100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 3112100979Srwatson error = vn_setlabel(vp, &intlabel, td->td_ucred); 3113100979Srwatson VOP_UNLOCK(vp, 0, td); 3114100979Srwatson vn_finished_write(mp); 3115100979Srwatson mac_destroy_temp(&intlabel); 3116100979Srwatson break; 3117100979Srwatson case DTYPE_PIPE: 3118100979Srwatson pipe = (struct pipe *)fp->f_data; 3119100979Srwatson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 3120100979Srwatson break; 3121100979Srwatson default: 3122100979Srwatson error = EINVAL; 3123100979Srwatson } 3124100979Srwatson 3125100979Srwatsonout2: 3126100979Srwatson fdrop(fp, td); 3127100979Srwatsonout1: 3128100979Srwatson mtx_unlock(&Giant); 3129100979Srwatson return (error); 3130100979Srwatson} 3131100979Srwatson 3132100979Srwatson/* 3133100979Srwatson * MPSAFE 3134100979Srwatson */ 3135100979Srwatsonint 3136100979Srwatson__mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 3137100979Srwatson{ 3138100979Srwatson struct nameidata nd; 3139100979Srwatson struct mac extmac; 3140100979Srwatson struct label intlabel; 3141100979Srwatson struct mount *mp; 3142100979Srwatson int error; 3143100979Srwatson 3144100979Srwatson mtx_lock(&Giant); 3145100979Srwatson 3146100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 3147100979Srwatson if (error) 3148100979Srwatson goto out; 3149100979Srwatson 3150100979Srwatson error = mac_internalize(&intlabel, &extmac); 3151100979Srwatson if (error) 3152100979Srwatson goto out; 3153100979Srwatson 3154100979Srwatson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 3155100979Srwatson SCARG(uap, path_p), td); 3156100979Srwatson error = namei(&nd); 3157100979Srwatson if (error) 3158100979Srwatson goto out2; 3159100979Srwatson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 3160100979Srwatson if (error) 3161100979Srwatson goto out2; 3162100979Srwatson 3163100979Srwatson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 3164100979Srwatson 3165100979Srwatson vn_finished_write(mp); 3166100979Srwatsonout2: 3167100979Srwatson mac_destroy_temp(&intlabel); 3168100979Srwatson NDFREE(&nd, 0); 3169100979Srwatsonout: 3170100979Srwatson mtx_unlock(&Giant); 3171100979Srwatson return (error); 3172100979Srwatson} 3173100979Srwatson 3174100979SrwatsonSYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 3175100979SrwatsonSYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 3176100979Srwatson 3177100979Srwatson#else /* !MAC */ 3178100979Srwatson 3179100979Srwatsonint 3180100979Srwatson__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 3181100979Srwatson{ 3182100979Srwatson 3183100894Srwatson return (ENOSYS); 3184100894Srwatson} 3185100894Srwatson 3186100894Srwatsonint 3187100894Srwatson__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 3188100894Srwatson{ 3189100894Srwatson 3190100894Srwatson return (ENOSYS); 3191100894Srwatson} 3192100894Srwatson 3193100894Srwatsonint 3194100894Srwatson__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 3195100894Srwatson{ 3196100894Srwatson 3197100894Srwatson return (ENOSYS); 3198100894Srwatson} 3199100894Srwatson 3200100894Srwatsonint 3201100894Srwatson__mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 3202100894Srwatson{ 3203100894Srwatson 3204100894Srwatson return (ENOSYS); 3205100894Srwatson} 3206100894Srwatson 3207100894Srwatsonint 3208100894Srwatson__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 3209100894Srwatson{ 3210100894Srwatson 3211100894Srwatson return (ENOSYS); 3212100894Srwatson} 3213100894Srwatson 3214100894Srwatsonint 3215100894Srwatson__mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 3216100894Srwatson{ 3217100894Srwatson 3218100894Srwatson return (ENOSYS); 3219100894Srwatson} 3220100979Srwatson 3221100979Srwatson#endif /* !MAC */ 3222