mac_cred.c revision 102103
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 102103 2002-08-19 15:30:30Z 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_OP: 759100979Srwatson mpc->mpc_ops->mpo_check_vnode_op = 760100979Srwatson mpe->mpe_function; 761100979Srwatson break; 762100979Srwatson case MAC_CHECK_VNODE_OPEN: 763100979Srwatson mpc->mpc_ops->mpo_check_vnode_open = 764100979Srwatson mpe->mpe_function; 765100979Srwatson break; 766100979Srwatson case MAC_CHECK_VNODE_READDIR: 767100979Srwatson mpc->mpc_ops->mpo_check_vnode_readdir = 768100979Srwatson mpe->mpe_function; 769100979Srwatson break; 770100979Srwatson case MAC_CHECK_VNODE_READLINK: 771100979Srwatson mpc->mpc_ops->mpo_check_vnode_readlink = 772100979Srwatson mpe->mpe_function; 773100979Srwatson break; 774100979Srwatson case MAC_CHECK_VNODE_RELABEL: 775100979Srwatson mpc->mpc_ops->mpo_check_vnode_relabel = 776100979Srwatson mpe->mpe_function; 777100979Srwatson break; 778100979Srwatson case MAC_CHECK_VNODE_RENAME_FROM: 779100979Srwatson mpc->mpc_ops->mpo_check_vnode_rename_from = 780100979Srwatson mpe->mpe_function; 781100979Srwatson break; 782100979Srwatson case MAC_CHECK_VNODE_RENAME_TO: 783100979Srwatson mpc->mpc_ops->mpo_check_vnode_rename_to = 784100979Srwatson mpe->mpe_function; 785100979Srwatson break; 786100979Srwatson case MAC_CHECK_VNODE_REVOKE: 787100979Srwatson mpc->mpc_ops->mpo_check_vnode_revoke = 788100979Srwatson mpe->mpe_function; 789100979Srwatson break; 790100979Srwatson case MAC_CHECK_VNODE_SETACL: 791100979Srwatson mpc->mpc_ops->mpo_check_vnode_setacl = 792100979Srwatson mpe->mpe_function; 793100979Srwatson break; 794100979Srwatson case MAC_CHECK_VNODE_SETEXTATTR: 795100979Srwatson mpc->mpc_ops->mpo_check_vnode_setextattr = 796100979Srwatson mpe->mpe_function; 797100979Srwatson break; 798100979Srwatson case MAC_CHECK_VNODE_SETFLAGS: 799100979Srwatson mpc->mpc_ops->mpo_check_vnode_setflags = 800100979Srwatson mpe->mpe_function; 801100979Srwatson break; 802100979Srwatson case MAC_CHECK_VNODE_SETMODE: 803100979Srwatson mpc->mpc_ops->mpo_check_vnode_setmode = 804100979Srwatson mpe->mpe_function; 805100979Srwatson break; 806100979Srwatson case MAC_CHECK_VNODE_SETOWNER: 807100979Srwatson mpc->mpc_ops->mpo_check_vnode_setowner = 808100979Srwatson mpe->mpe_function; 809100979Srwatson break; 810100979Srwatson case MAC_CHECK_VNODE_SETUTIMES: 811100979Srwatson mpc->mpc_ops->mpo_check_vnode_setutimes = 812100979Srwatson mpe->mpe_function; 813100979Srwatson break; 814100979Srwatson case MAC_CHECK_VNODE_STAT: 815100979Srwatson mpc->mpc_ops->mpo_check_vnode_stat = 816100979Srwatson mpe->mpe_function; 817100979Srwatson break; 818100979Srwatson/* 819100979Srwatson default: 820100979Srwatson printf("MAC policy `%s': unknown operation %d\n", 821100979Srwatson mpc->mpc_name, mpe->mpe_constant); 822100979Srwatson return (EINVAL); 823100979Srwatson*/ 824100979Srwatson } 825100979Srwatson } 826100979Srwatson MAC_POLICY_LIST_LOCK(); 827100979Srwatson if (mac_policy_list_busy > 0) { 828100979Srwatson MAC_POLICY_LIST_UNLOCK(); 829100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 830100979Srwatson mpc->mpc_ops = NULL; 831100979Srwatson return (EBUSY); 832100979Srwatson } 833100979Srwatson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 834100979Srwatson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 835100979Srwatson MAC_POLICY_LIST_UNLOCK(); 836100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 837100979Srwatson mpc->mpc_ops = NULL; 838100979Srwatson return (EEXIST); 839100979Srwatson } 840100979Srwatson } 841100979Srwatson if (mpc->mpc_field_off != NULL) { 842100979Srwatson slot = ffs(mac_policy_offsets_free); 843100979Srwatson if (slot == 0) { 844100979Srwatson MAC_POLICY_LIST_UNLOCK(); 845100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 846100979Srwatson mpc->mpc_ops = NULL; 847100979Srwatson return (ENOMEM); 848100979Srwatson } 849100979Srwatson slot--; 850100979Srwatson mac_policy_offsets_free &= ~(1 << slot); 851100979Srwatson *mpc->mpc_field_off = slot; 852100979Srwatson } 853100979Srwatson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 854100979Srwatson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 855100979Srwatson 856100979Srwatson /* Per-policy initialization. */ 857100979Srwatson if (mpc->mpc_ops->mpo_init != NULL) 858100979Srwatson (*(mpc->mpc_ops->mpo_init))(mpc); 859100979Srwatson MAC_POLICY_LIST_UNLOCK(); 860100979Srwatson 861100979Srwatson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 862100979Srwatson mpc->mpc_name); 863100979Srwatson 864100979Srwatson return (0); 865100979Srwatson} 866100979Srwatson 867100979Srwatsonstatic int 868100979Srwatsonmac_policy_unregister(struct mac_policy_conf *mpc) 869100979Srwatson{ 870100979Srwatson 871100979Srwatson#if 0 872100979Srwatson /* 873100979Srwatson * Don't allow unloading modules with private data. 874100979Srwatson */ 875100979Srwatson if (mpc->mpc_field_off != NULL) 876100979Srwatson return (EBUSY); 877100979Srwatson#endif 878100979Srwatson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) 879100979Srwatson return (EBUSY); 880100979Srwatson MAC_POLICY_LIST_LOCK(); 881100979Srwatson if (mac_policy_list_busy > 0) { 882100979Srwatson MAC_POLICY_LIST_UNLOCK(); 883100979Srwatson return (EBUSY); 884100979Srwatson } 885100979Srwatson if (mpc->mpc_ops->mpo_destroy != NULL) 886100979Srwatson (*(mpc->mpc_ops->mpo_destroy))(mpc); 887100979Srwatson 888100979Srwatson LIST_REMOVE(mpc, mpc_list); 889100979Srwatson MAC_POLICY_LIST_UNLOCK(); 890100979Srwatson 891100979Srwatson FREE(mpc->mpc_ops, M_MACOPVEC); 892100979Srwatson mpc->mpc_ops = NULL; 893100979Srwatson 894100979Srwatson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 895100979Srwatson mpc->mpc_name); 896100979Srwatson 897100979Srwatson return (0); 898100979Srwatson} 899100979Srwatson 900100979Srwatson/* 901100979Srwatson * Define an error value precedence, and given two arguments, selects the 902100979Srwatson * value with the higher precedence. 903100979Srwatson */ 904100979Srwatsonstatic int 905100979Srwatsonerror_select(int error1, int error2) 906100979Srwatson{ 907100979Srwatson 908100979Srwatson /* Certain decision-making errors take top priority. */ 909100979Srwatson if (error1 == EDEADLK || error2 == EDEADLK) 910100979Srwatson return (EDEADLK); 911100979Srwatson 912100979Srwatson /* Invalid arguments should be reported where possible. */ 913100979Srwatson if (error1 == EINVAL || error2 == EINVAL) 914100979Srwatson return (EINVAL); 915100979Srwatson 916100979Srwatson /* Precedence goes to "visibility", with both process and file. */ 917100979Srwatson if (error1 == ESRCH || error2 == ESRCH) 918100979Srwatson return (ESRCH); 919100979Srwatson 920100979Srwatson if (error1 == ENOENT || error2 == ENOENT) 921100979Srwatson return (ENOENT); 922100979Srwatson 923100979Srwatson /* Precedence goes to DAC/MAC protections. */ 924100979Srwatson if (error1 == EACCES || error2 == EACCES) 925100979Srwatson return (EACCES); 926100979Srwatson 927100979Srwatson /* Precedence goes to privilege. */ 928100979Srwatson if (error1 == EPERM || error2 == EPERM) 929100979Srwatson return (EPERM); 930100979Srwatson 931100979Srwatson /* Precedence goes to error over success; otherwise, arbitrary. */ 932100979Srwatson if (error1 != 0) 933100979Srwatson return (error1); 934100979Srwatson return (error2); 935100979Srwatson} 936100979Srwatson 937100979Srwatsonvoid 938100979Srwatsonmac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 939100979Srwatson{ 940100979Srwatson 941100979Srwatson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 942100979Srwatson} 943100979Srwatson 944100979Srwatsonvoid 945100979Srwatsonmac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 946100979Srwatson{ 947100979Srwatson 948100979Srwatson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 949100979Srwatson} 950100979Srwatson 951100979Srwatson/* 952100979Srwatson * Support callout for policies that manage their own externalization 953100979Srwatson * using extended attributes. 954100979Srwatson */ 955100979Srwatsonstatic int 956100979Srwatsonmac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 957100979Srwatson{ 958100979Srwatson int error; 959100979Srwatson 960100979Srwatson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 961100979Srwatson &mp->mnt_fslabel); 962100979Srwatson 963100979Srwatson return (error); 964100979Srwatson} 965100979Srwatson 966100979Srwatson/* 967100979Srwatson * Given an externalized mac label, internalize it and stamp it on a 968100979Srwatson * vnode. 969100979Srwatson */ 970100979Srwatsonstatic int 971100979Srwatsonmac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 972100979Srwatson{ 973100979Srwatson int error; 974100979Srwatson 975100979Srwatson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 976100979Srwatson 977100979Srwatson return (error); 978100979Srwatson} 979100979Srwatson 980100979Srwatson/* 981100979Srwatson * Call out to individual policies to update the label in a vnode from 982100979Srwatson * the mountpoint. 983100979Srwatson */ 984100979Srwatsonvoid 985100979Srwatsonmac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 986100979Srwatson{ 987100979Srwatson 988100979Srwatson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 989100979Srwatson &mp->mnt_fslabel); 990100979Srwatson 991101308Sjeff ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 992100979Srwatson if (mac_cache_fslabel_in_vnode) 993101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 994100979Srwatson} 995100979Srwatson 996100979Srwatson/* 997100979Srwatson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 998100979Srwatson * to store label data. Can be referenced by filesystems supporting 999100979Srwatson * extended attributes. 1000100979Srwatson */ 1001100979Srwatsonint 1002100979Srwatsonvop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 1003100979Srwatson{ 1004100979Srwatson struct vnode *vp = ap->a_vp; 1005100979Srwatson struct mac extmac; 1006100979Srwatson int buflen, error; 1007100979Srwatson 1008100979Srwatson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 1009100979Srwatson 1010100979Srwatson /* 1011100979Srwatson * Call out to external policies first. Order doesn't really 1012100979Srwatson * matter, as long as failure of one assures failure of all. 1013100979Srwatson */ 1014100979Srwatson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 1015100979Srwatson if (error) 1016100979Srwatson return (error); 1017100979Srwatson 1018100979Srwatson buflen = sizeof(extmac); 1019100979Srwatson error = vn_extattr_get(vp, IO_NODELOCKED, 1020100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 1021100979Srwatson (char *)&extmac, curthread); 1022100979Srwatson switch (error) { 1023100979Srwatson case 0: 1024100979Srwatson /* Got it */ 1025100979Srwatson break; 1026100979Srwatson 1027100979Srwatson case ENOATTR: 1028100979Srwatson /* 1029100979Srwatson * Use the label from the mount point. 1030100979Srwatson */ 1031100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1032100979Srwatson return (0); 1033100979Srwatson 1034100979Srwatson case EOPNOTSUPP: 1035100979Srwatson default: 1036100979Srwatson /* Fail horribly. */ 1037100979Srwatson return (error); 1038100979Srwatson } 1039100979Srwatson 1040100979Srwatson if (buflen != sizeof(extmac)) 1041100979Srwatson error = EPERM; /* Fail very closed. */ 1042100979Srwatson if (error == 0) 1043100979Srwatson error = mac_update_vnode_from_externalized(vp, &extmac); 1044100979Srwatson if (error == 0) 1045101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 1046100979Srwatson else { 1047100979Srwatson struct vattr va; 1048100979Srwatson 1049100979Srwatson printf("Corrupted label on %s", 1050100979Srwatson vp->v_mount->mnt_stat.f_mntonname); 1051100979Srwatson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 1052100979Srwatson printf(" inum %ld", va.va_fileid); 1053100979Srwatson if (mac_debug_label_fallback) { 1054100979Srwatson printf(", falling back.\n"); 1055100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1056100979Srwatson error = 0; 1057100979Srwatson } else { 1058100979Srwatson printf(".\n"); 1059100979Srwatson error = EPERM; 1060100979Srwatson } 1061100979Srwatson } 1062100979Srwatson 1063100979Srwatson return (error); 1064100979Srwatson} 1065100979Srwatson 1066100979Srwatson/* 1067100979Srwatson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 1068100979Srwatson * the labeling activity outselves. Filesystems should be careful not 1069100979Srwatson * to change their minds regarding whether they support vop_refreshlabel() 1070100979Srwatson * for a vnode or not. Don't cache the vnode here, allow the file 1071100979Srwatson * system code to determine if it's safe to cache. If we update from 1072100979Srwatson * the mount, don't cache since a change to the mount label should affect 1073100979Srwatson * all vnodes. 1074100979Srwatson */ 1075100979Srwatsonstatic int 1076100979Srwatsonvn_refreshlabel(struct vnode *vp, struct ucred *cred) 1077100979Srwatson{ 1078100979Srwatson int error; 1079100979Srwatson 1080100979Srwatson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 1081100979Srwatson 1082100979Srwatson if (vp->v_mount == NULL) { 1083100979Srwatson/* 1084100979Srwatson Eventually, we probably want to special-case refreshing 1085100979Srwatson of deadfs vnodes, and if there's a lock-free race somewhere, 1086100979Srwatson that case might be handled here. 1087100979Srwatson 1088100979Srwatson mac_update_vnode_deadfs(vp); 1089100979Srwatson return (0); 1090100979Srwatson */ 1091100979Srwatson /* printf("vn_refreshlabel: null v_mount\n"); */ 1092100979Srwatson if (vp->v_tag != VT_NON) 1093100979Srwatson printf( 1094100979Srwatson "vn_refreshlabel: null v_mount with non-VT_NON\n"); 1095100979Srwatson return (EBADF); 1096100979Srwatson } 1097100979Srwatson 1098101308Sjeff if (vp->v_vflag & VV_CACHEDLABEL) { 1099100979Srwatson mac_vnode_label_cache_hits++; 1100100979Srwatson return (0); 1101100979Srwatson } else 1102100979Srwatson mac_vnode_label_cache_misses++; 1103100979Srwatson 1104100979Srwatson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 1105100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1106100979Srwatson return (0); 1107100979Srwatson } 1108100979Srwatson 1109100979Srwatson error = VOP_REFRESHLABEL(vp, cred, curthread); 1110100979Srwatson switch (error) { 1111100979Srwatson case EOPNOTSUPP: 1112100979Srwatson /* 1113100979Srwatson * If labels are not supported on this vnode, fall back to 1114100979Srwatson * the label in the mount and propagate it to the vnode. 1115100979Srwatson * There should probably be some sort of policy/flag/decision 1116100979Srwatson * about doing this. 1117100979Srwatson */ 1118100979Srwatson mac_update_vnode_from_mount(vp, vp->v_mount); 1119100979Srwatson error = 0; 1120100979Srwatson default: 1121100979Srwatson return (error); 1122100979Srwatson } 1123100979Srwatson} 1124100979Srwatson 1125100979Srwatson/* 1126100979Srwatson * Helper function for file systems using the vop_std*_ea() calls. This 1127100979Srwatson * function must be called after EA service is available for the vnode, 1128100979Srwatson * but before it's hooked up to the namespace so that the node persists 1129100979Srwatson * if there's a crash, or before it can be accessed. On successful 1130100979Srwatson * commit of the label to disk (etc), do cache the label. 1131100979Srwatson */ 1132100979Srwatsonint 1133100979Srwatsonvop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 1134100979Srwatson{ 1135100979Srwatson struct mac extmac; 1136100979Srwatson int error; 1137100979Srwatson 1138101308Sjeff ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 1139100979Srwatson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 1140100979Srwatson mac_update_vnode_from_mount(tvp, tvp->v_mount); 1141100979Srwatson } else { 1142100979Srwatson error = vn_refreshlabel(dvp, cred); 1143100979Srwatson if (error) 1144100979Srwatson return (error); 1145100979Srwatson 1146100979Srwatson /* 1147100979Srwatson * Stick the label in the vnode. Then try to write to 1148100979Srwatson * disk. If we fail, return a failure to abort the 1149100979Srwatson * create operation. Really, this failure shouldn't 1150100979Srwatson * happen except in fairly unusual circumstances (out 1151100979Srwatson * of disk, etc). 1152100979Srwatson */ 1153100979Srwatson mac_create_vnode(cred, dvp, tvp); 1154100979Srwatson 1155100979Srwatson error = mac_stdcreatevnode_ea(tvp); 1156100979Srwatson if (error) 1157100979Srwatson return (error); 1158100979Srwatson 1159100979Srwatson /* 1160100979Srwatson * XXX: Eventually this will go away and all policies will 1161100979Srwatson * directly manage their extended attributes. 1162100979Srwatson */ 1163100979Srwatson error = mac_externalize(&tvp->v_label, &extmac); 1164100979Srwatson if (error) 1165100979Srwatson return (error); 1166100979Srwatson 1167100979Srwatson error = vn_extattr_set(tvp, IO_NODELOCKED, 1168100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 1169100979Srwatson sizeof(extmac), (char *)&extmac, curthread); 1170100979Srwatson if (error == 0) 1171101308Sjeff tvp->v_vflag |= VV_CACHEDLABEL; 1172100979Srwatson else { 1173100979Srwatson#if 0 1174100979Srwatson /* 1175100979Srwatson * In theory, we could have fall-back behavior here. 1176100979Srwatson * It would probably be incorrect. 1177100979Srwatson */ 1178100979Srwatson#endif 1179100979Srwatson return (error); 1180100979Srwatson } 1181100979Srwatson } 1182100979Srwatson 1183100979Srwatson return (0); 1184100979Srwatson} 1185100979Srwatson 1186100979Srwatsonvoid 1187100979Srwatsonmac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 1188100979Srwatson{ 1189100979Srwatson int error; 1190100979Srwatson 1191100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 1192100979Srwatson 1193100979Srwatson error = vn_refreshlabel(vp, old); 1194100979Srwatson if (error) { 1195100979Srwatson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 1196100979Srwatson error); 1197100979Srwatson printf("mac_execve_transition: using old vnode label\n"); 1198100979Srwatson } 1199100979Srwatson 1200100979Srwatson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 1201100979Srwatson} 1202100979Srwatson 1203100979Srwatsonint 1204100979Srwatsonmac_execve_will_transition(struct ucred *old, struct vnode *vp) 1205100979Srwatson{ 1206100979Srwatson int error, result; 1207100979Srwatson 1208100979Srwatson error = vn_refreshlabel(vp, old); 1209100979Srwatson if (error) 1210100979Srwatson return (error); 1211100979Srwatson 1212100979Srwatson result = 0; 1213100979Srwatson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 1214100979Srwatson 1215100979Srwatson return (result); 1216100979Srwatson} 1217100979Srwatson 1218100979Srwatsonstatic void 1219100979Srwatsonmac_init_label(struct label *label) 1220100979Srwatson{ 1221100979Srwatson 1222100979Srwatson bzero(label, sizeof(*label)); 1223100979Srwatson label->l_flags = MAC_FLAG_INITIALIZED; 1224100979Srwatson} 1225100979Srwatson 1226100979Srwatsonstatic void 1227100979Srwatsonmac_init_structmac(struct mac *mac) 1228100979Srwatson{ 1229100979Srwatson 1230100979Srwatson bzero(mac, sizeof(*mac)); 1231100979Srwatson mac->m_macflags = MAC_FLAG_INITIALIZED; 1232100979Srwatson} 1233100979Srwatson 1234100979Srwatsonstatic void 1235100979Srwatsonmac_destroy_label(struct label *label) 1236100979Srwatson{ 1237100979Srwatson 1238100979Srwatson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 1239100979Srwatson ("destroying uninitialized label")); 1240100979Srwatson 1241100979Srwatson bzero(label, sizeof(*label)); 1242100979Srwatson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 1243100979Srwatson} 1244100979Srwatson 1245100979Srwatsonint 1246100979Srwatsonmac_init_mbuf(struct mbuf *m, int how) 1247100979Srwatson{ 1248100979Srwatson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 1249100979Srwatson 1250100979Srwatson /* "how" is one of M_(TRY|DONT)WAIT */ 1251100979Srwatson mac_init_label(&m->m_pkthdr.label); 1252100979Srwatson MAC_PERFORM(init_mbuf, m, how, &m->m_pkthdr.label); 1253101988Srwatson#ifdef MAC_DEBUG 1254100979Srwatson atomic_add_int(&nmacmbufs, 1); 1255101988Srwatson#endif 1256100979Srwatson return (0); 1257100979Srwatson} 1258100979Srwatson 1259100979Srwatsonvoid 1260100979Srwatsonmac_destroy_mbuf(struct mbuf *m) 1261100979Srwatson{ 1262100979Srwatson 1263100979Srwatson MAC_PERFORM(destroy_mbuf, m, &m->m_pkthdr.label); 1264100979Srwatson mac_destroy_label(&m->m_pkthdr.label); 1265101988Srwatson#ifdef MAC_DEBUG 1266100979Srwatson atomic_subtract_int(&nmacmbufs, 1); 1267101988Srwatson#endif 1268100979Srwatson} 1269100979Srwatson 1270100979Srwatsonvoid 1271100979Srwatsonmac_init_cred(struct ucred *cr) 1272100979Srwatson{ 1273100979Srwatson 1274100979Srwatson mac_init_label(&cr->cr_label); 1275100979Srwatson MAC_PERFORM(init_cred, cr, &cr->cr_label); 1276101988Srwatson#ifdef MAC_DEBUG 1277100979Srwatson atomic_add_int(&nmaccreds, 1); 1278101988Srwatson#endif 1279100979Srwatson} 1280100979Srwatson 1281100979Srwatsonvoid 1282100979Srwatsonmac_destroy_cred(struct ucred *cr) 1283100979Srwatson{ 1284100979Srwatson 1285100979Srwatson MAC_PERFORM(destroy_cred, cr, &cr->cr_label); 1286100979Srwatson mac_destroy_label(&cr->cr_label); 1287101988Srwatson#ifdef MAC_DEBUG 1288100979Srwatson atomic_subtract_int(&nmaccreds, 1); 1289101988Srwatson#endif 1290100979Srwatson} 1291100979Srwatson 1292100979Srwatsonvoid 1293100979Srwatsonmac_init_ifnet(struct ifnet *ifp) 1294100979Srwatson{ 1295100979Srwatson 1296100979Srwatson mac_init_label(&ifp->if_label); 1297100979Srwatson MAC_PERFORM(init_ifnet, ifp, &ifp->if_label); 1298101988Srwatson#ifdef MAC_DEBUG 1299100979Srwatson atomic_add_int(&nmacifnets, 1); 1300101988Srwatson#endif 1301100979Srwatson} 1302100979Srwatson 1303100979Srwatsonvoid 1304100979Srwatsonmac_destroy_ifnet(struct ifnet *ifp) 1305100979Srwatson{ 1306100979Srwatson 1307100979Srwatson MAC_PERFORM(destroy_ifnet, ifp, &ifp->if_label); 1308100979Srwatson mac_destroy_label(&ifp->if_label); 1309101988Srwatson#ifdef MAC_DEBUG 1310100979Srwatson atomic_subtract_int(&nmacifnets, 1); 1311101988Srwatson#endif 1312100979Srwatson} 1313100979Srwatson 1314100979Srwatsonvoid 1315100979Srwatsonmac_init_ipq(struct ipq *ipq) 1316100979Srwatson{ 1317100979Srwatson 1318100979Srwatson mac_init_label(&ipq->ipq_label); 1319100979Srwatson MAC_PERFORM(init_ipq, ipq, &ipq->ipq_label); 1320101988Srwatson#ifdef MAC_DEBUG 1321100979Srwatson atomic_add_int(&nmacipqs, 1); 1322101988Srwatson#endif 1323100979Srwatson} 1324100979Srwatson 1325100979Srwatsonvoid 1326100979Srwatsonmac_destroy_ipq(struct ipq *ipq) 1327100979Srwatson{ 1328100979Srwatson 1329100979Srwatson MAC_PERFORM(destroy_ipq, ipq, &ipq->ipq_label); 1330100979Srwatson mac_destroy_label(&ipq->ipq_label); 1331101988Srwatson#ifdef MAC_DEBUG 1332100979Srwatson atomic_subtract_int(&nmacipqs, 1); 1333101988Srwatson#endif 1334100979Srwatson} 1335100979Srwatson 1336100979Srwatsonvoid 1337100979Srwatsonmac_init_socket(struct socket *socket) 1338100979Srwatson{ 1339100979Srwatson 1340100979Srwatson mac_init_label(&socket->so_label); 1341100979Srwatson mac_init_label(&socket->so_peerlabel); 1342100979Srwatson MAC_PERFORM(init_socket, socket, &socket->so_label, 1343100979Srwatson &socket->so_peerlabel); 1344101988Srwatson#ifdef MAC_DEBUG 1345100979Srwatson atomic_add_int(&nmacsockets, 1); 1346101988Srwatson#endif 1347100979Srwatson} 1348100979Srwatson 1349100979Srwatsonvoid 1350100979Srwatsonmac_destroy_socket(struct socket *socket) 1351100979Srwatson{ 1352100979Srwatson 1353100979Srwatson MAC_PERFORM(destroy_socket, socket, &socket->so_label, 1354100979Srwatson &socket->so_peerlabel); 1355100979Srwatson mac_destroy_label(&socket->so_label); 1356100979Srwatson mac_destroy_label(&socket->so_peerlabel); 1357101988Srwatson#ifdef MAC_DEBUG 1358100979Srwatson atomic_subtract_int(&nmacsockets, 1); 1359101988Srwatson#endif 1360100979Srwatson} 1361100979Srwatson 1362100979Srwatsonvoid 1363100979Srwatsonmac_init_pipe(struct pipe *pipe) 1364100979Srwatson{ 1365100979Srwatson struct label *label; 1366100979Srwatson 1367100979Srwatson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 1368100979Srwatson mac_init_label(label); 1369100979Srwatson pipe->pipe_label = label; 1370100979Srwatson pipe->pipe_peer->pipe_label = label; 1371100979Srwatson MAC_PERFORM(init_pipe, pipe, pipe->pipe_label); 1372101988Srwatson#ifdef MAC_DEBUG 1373100979Srwatson atomic_add_int(&nmacpipes, 1); 1374101988Srwatson#endif 1375100979Srwatson} 1376100979Srwatson 1377100979Srwatsonvoid 1378100979Srwatsonmac_destroy_pipe(struct pipe *pipe) 1379100979Srwatson{ 1380100979Srwatson 1381100979Srwatson MAC_PERFORM(destroy_pipe, pipe, pipe->pipe_label); 1382100979Srwatson mac_destroy_label(pipe->pipe_label); 1383100979Srwatson free(pipe->pipe_label, M_MACPIPELABEL); 1384101988Srwatson#ifdef MAC_DEBUG 1385100979Srwatson atomic_subtract_int(&nmacpipes, 1); 1386101988Srwatson#endif 1387100979Srwatson} 1388100979Srwatson 1389100979Srwatsonvoid 1390100979Srwatsonmac_init_bpfdesc(struct bpf_d *bpf_d) 1391100979Srwatson{ 1392100979Srwatson 1393100979Srwatson mac_init_label(&bpf_d->bd_label); 1394100979Srwatson MAC_PERFORM(init_bpfdesc, bpf_d, &bpf_d->bd_label); 1395101988Srwatson#ifdef MAC_DEBUG 1396100979Srwatson atomic_add_int(&nmacbpfdescs, 1); 1397101988Srwatson#endif 1398100979Srwatson} 1399100979Srwatson 1400100979Srwatsonvoid 1401100979Srwatsonmac_destroy_bpfdesc(struct bpf_d *bpf_d) 1402100979Srwatson{ 1403100979Srwatson 1404100979Srwatson MAC_PERFORM(destroy_bpfdesc, bpf_d, &bpf_d->bd_label); 1405100979Srwatson mac_destroy_label(&bpf_d->bd_label); 1406101988Srwatson#ifdef MAC_DEBUG 1407100979Srwatson atomic_subtract_int(&nmacbpfdescs, 1); 1408101988Srwatson#endif 1409100979Srwatson} 1410100979Srwatson 1411100979Srwatsonvoid 1412100979Srwatsonmac_init_mount(struct mount *mp) 1413100979Srwatson{ 1414100979Srwatson 1415100979Srwatson mac_init_label(&mp->mnt_mntlabel); 1416100979Srwatson mac_init_label(&mp->mnt_fslabel); 1417100979Srwatson MAC_PERFORM(init_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 1418101988Srwatson#ifdef MAC_DEBUG 1419100979Srwatson atomic_add_int(&nmacmounts, 1); 1420101988Srwatson#endif 1421100979Srwatson} 1422100979Srwatson 1423100979Srwatsonvoid 1424100979Srwatsonmac_destroy_mount(struct mount *mp) 1425100979Srwatson{ 1426100979Srwatson 1427100979Srwatson MAC_PERFORM(destroy_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 1428100979Srwatson mac_destroy_label(&mp->mnt_fslabel); 1429100979Srwatson mac_destroy_label(&mp->mnt_mntlabel); 1430101988Srwatson#ifdef MAC_DEBUG 1431100979Srwatson atomic_subtract_int(&nmacmounts, 1); 1432101988Srwatson#endif 1433100979Srwatson} 1434100979Srwatson 1435100979Srwatsonstatic void 1436100979Srwatsonmac_init_temp(struct label *label) 1437100979Srwatson{ 1438100979Srwatson 1439100979Srwatson mac_init_label(label); 1440100979Srwatson MAC_PERFORM(init_temp, label); 1441101988Srwatson#ifdef MAC_DEBUG 1442100979Srwatson atomic_add_int(&nmactemp, 1); 1443101988Srwatson#endif 1444100979Srwatson} 1445100979Srwatson 1446100979Srwatsonstatic void 1447100979Srwatsonmac_destroy_temp(struct label *label) 1448100979Srwatson{ 1449100979Srwatson 1450100979Srwatson MAC_PERFORM(destroy_temp, label); 1451100979Srwatson mac_destroy_label(label); 1452101988Srwatson#ifdef MAC_DEBUG 1453100979Srwatson atomic_subtract_int(&nmactemp, 1); 1454101988Srwatson#endif 1455100979Srwatson} 1456100979Srwatson 1457100979Srwatsonvoid 1458100979Srwatsonmac_init_vnode(struct vnode *vp) 1459100979Srwatson{ 1460100979Srwatson 1461100979Srwatson mac_init_label(&vp->v_label); 1462100979Srwatson MAC_PERFORM(init_vnode, vp, &vp->v_label); 1463101988Srwatson#ifdef MAC_DEBUG 1464100979Srwatson atomic_add_int(&nmacvnodes, 1); 1465101988Srwatson#endif 1466100979Srwatson} 1467100979Srwatson 1468100979Srwatsonvoid 1469100979Srwatsonmac_destroy_vnode(struct vnode *vp) 1470100979Srwatson{ 1471100979Srwatson 1472100979Srwatson MAC_PERFORM(destroy_vnode, vp, &vp->v_label); 1473100979Srwatson mac_destroy_label(&vp->v_label); 1474101988Srwatson#ifdef MAC_DEBUG 1475100979Srwatson atomic_subtract_int(&nmacvnodes, 1); 1476101988Srwatson#endif 1477100979Srwatson} 1478100979Srwatson 1479100979Srwatsonvoid 1480100979Srwatsonmac_init_devfsdirent(struct devfs_dirent *de) 1481100979Srwatson{ 1482100979Srwatson 1483100979Srwatson mac_init_label(&de->de_label); 1484100979Srwatson MAC_PERFORM(init_devfsdirent, de, &de->de_label); 1485101988Srwatson#ifdef MAC_DEBUG 1486100979Srwatson atomic_add_int(&nmacdevfsdirents, 1); 1487101988Srwatson#endif 1488100979Srwatson} 1489100979Srwatson 1490100979Srwatsonvoid 1491100979Srwatsonmac_destroy_devfsdirent(struct devfs_dirent *de) 1492100979Srwatson{ 1493100979Srwatson 1494100979Srwatson MAC_PERFORM(destroy_devfsdirent, de, &de->de_label); 1495100979Srwatson mac_destroy_label(&de->de_label); 1496101988Srwatson#ifdef MAC_DEBUG 1497100979Srwatson atomic_subtract_int(&nmacdevfsdirents, 1); 1498101988Srwatson#endif 1499100979Srwatson} 1500100979Srwatson 1501100979Srwatsonstatic int 1502100979Srwatsonmac_externalize(struct label *label, struct mac *mac) 1503100979Srwatson{ 1504100979Srwatson int error; 1505100979Srwatson 1506100979Srwatson mac_init_structmac(mac); 1507100979Srwatson MAC_CHECK(externalize, label, mac); 1508100979Srwatson 1509100979Srwatson return (error); 1510100979Srwatson} 1511100979Srwatson 1512100979Srwatsonstatic int 1513100979Srwatsonmac_internalize(struct label *label, struct mac *mac) 1514100979Srwatson{ 1515100979Srwatson int error; 1516100979Srwatson 1517100979Srwatson mac_init_temp(label); 1518100979Srwatson MAC_CHECK(internalize, label, mac); 1519100979Srwatson if (error) 1520100979Srwatson mac_destroy_temp(label); 1521100979Srwatson 1522100979Srwatson return (error); 1523100979Srwatson} 1524100979Srwatson 1525100979Srwatson/* 1526100979Srwatson * Initialize MAC label for the first kernel process, from which other 1527100979Srwatson * kernel processes and threads are spawned. 1528100979Srwatson */ 1529100979Srwatsonvoid 1530100979Srwatsonmac_create_proc0(struct ucred *cred) 1531100979Srwatson{ 1532100979Srwatson 1533100979Srwatson MAC_PERFORM(create_proc0, cred); 1534100979Srwatson} 1535100979Srwatson 1536100979Srwatson/* 1537100979Srwatson * Initialize MAC label for the first userland process, from which other 1538100979Srwatson * userland processes and threads are spawned. 1539100979Srwatson */ 1540100979Srwatsonvoid 1541100979Srwatsonmac_create_proc1(struct ucred *cred) 1542100979Srwatson{ 1543100979Srwatson 1544100979Srwatson MAC_PERFORM(create_proc1, cred); 1545100979Srwatson} 1546100979Srwatson 1547100979Srwatson/* 1548100979Srwatson * When a new process is created, its label must be initialized. Generally, 1549100979Srwatson * this involves inheritence from the parent process, modulo possible 1550100979Srwatson * deltas. This function allows that processing to take place. 1551100979Srwatson */ 1552100979Srwatsonvoid 1553100979Srwatsonmac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 1554100979Srwatson{ 1555100979Srwatson 1556100979Srwatson MAC_PERFORM(create_cred, parent_cred, child_cred); 1557100979Srwatson} 1558100979Srwatson 1559100979Srwatsonint 1560100979Srwatsonmac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 1561100979Srwatson{ 1562100979Srwatson int error; 1563100979Srwatson 1564100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 1565100979Srwatson 1566100979Srwatson if (!mac_enforce_fs) 1567100979Srwatson return (0); 1568100979Srwatson 1569100979Srwatson error = vn_refreshlabel(vp, cred); 1570100979Srwatson if (error) 1571100979Srwatson return (error); 1572100979Srwatson 1573100979Srwatson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 1574100979Srwatson return (error); 1575100979Srwatson} 1576100979Srwatson 1577100979Srwatsonint 1578100979Srwatsonmac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 1579100979Srwatson{ 1580100979Srwatson int error; 1581100979Srwatson 1582100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 1583100979Srwatson 1584100979Srwatson if (!mac_enforce_fs) 1585100979Srwatson return (0); 1586100979Srwatson 1587100979Srwatson error = vn_refreshlabel(dvp, cred); 1588100979Srwatson if (error) 1589100979Srwatson return (error); 1590100979Srwatson 1591100979Srwatson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 1592100979Srwatson return (error); 1593100979Srwatson} 1594100979Srwatson 1595100979Srwatsonint 1596100979Srwatsonmac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 1597100979Srwatson{ 1598100979Srwatson int error; 1599100979Srwatson 1600100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 1601100979Srwatson 1602100979Srwatson if (!mac_enforce_fs) 1603100979Srwatson return (0); 1604100979Srwatson 1605100979Srwatson error = vn_refreshlabel(dvp, cred); 1606100979Srwatson if (error) 1607100979Srwatson return (error); 1608100979Srwatson 1609100979Srwatson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 1610100979Srwatson return (error); 1611100979Srwatson} 1612100979Srwatson 1613100979Srwatsonint 1614100979Srwatsonmac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 1615100979Srwatson struct componentname *cnp, struct vattr *vap) 1616100979Srwatson{ 1617100979Srwatson int error; 1618100979Srwatson 1619100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 1620100979Srwatson 1621100979Srwatson if (!mac_enforce_fs) 1622100979Srwatson return (0); 1623100979Srwatson 1624100979Srwatson error = vn_refreshlabel(dvp, cred); 1625100979Srwatson if (error) 1626100979Srwatson return (error); 1627100979Srwatson 1628100979Srwatson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 1629100979Srwatson return (error); 1630100979Srwatson} 1631100979Srwatson 1632100979Srwatsonint 1633100979Srwatsonmac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 1634100979Srwatson struct componentname *cnp) 1635100979Srwatson{ 1636100979Srwatson int error; 1637100979Srwatson 1638100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 1639100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 1640100979Srwatson 1641100979Srwatson if (!mac_enforce_fs) 1642100979Srwatson return (0); 1643100979Srwatson 1644100979Srwatson error = vn_refreshlabel(dvp, cred); 1645100979Srwatson if (error) 1646100979Srwatson return (error); 1647100979Srwatson error = vn_refreshlabel(vp, cred); 1648100979Srwatson if (error) 1649100979Srwatson return (error); 1650100979Srwatson 1651100979Srwatson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 1652100979Srwatson &vp->v_label, cnp); 1653100979Srwatson return (error); 1654100979Srwatson} 1655100979Srwatson 1656100979Srwatsonint 1657100979Srwatsonmac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 1658100979Srwatson acl_type_t type) 1659100979Srwatson{ 1660100979Srwatson int error; 1661100979Srwatson 1662100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 1663100979Srwatson 1664100979Srwatson if (!mac_enforce_fs) 1665100979Srwatson return (0); 1666100979Srwatson 1667100979Srwatson error = vn_refreshlabel(vp, cred); 1668100979Srwatson if (error) 1669100979Srwatson return (error); 1670100979Srwatson 1671100979Srwatson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 1672100979Srwatson return (error); 1673100979Srwatson} 1674100979Srwatson 1675100979Srwatsonint 1676100979Srwatsonmac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 1677100979Srwatson{ 1678100979Srwatson int error; 1679100979Srwatson 1680102102Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1681102102Srwatson 1682100979Srwatson if (!mac_enforce_process && !mac_enforce_fs) 1683100979Srwatson return (0); 1684100979Srwatson 1685100979Srwatson error = vn_refreshlabel(vp, cred); 1686100979Srwatson if (error) 1687100979Srwatson return (error); 1688100979Srwatson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 1689100979Srwatson 1690100979Srwatson return (error); 1691100979Srwatson} 1692100979Srwatson 1693100979Srwatsonint 1694100979Srwatsonmac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 1695100979Srwatson{ 1696100979Srwatson int error; 1697100979Srwatson 1698100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 1699100979Srwatson 1700100979Srwatson if (!mac_enforce_fs) 1701100979Srwatson return (0); 1702100979Srwatson 1703100979Srwatson error = vn_refreshlabel(vp, cred); 1704100979Srwatson if (error) 1705100979Srwatson return (error); 1706100979Srwatson 1707100979Srwatson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 1708100979Srwatson return (error); 1709100979Srwatson} 1710100979Srwatson 1711100979Srwatsonint 1712100979Srwatsonmac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 1713100979Srwatson int attrnamespace, const char *name, struct uio *uio) 1714100979Srwatson{ 1715100979Srwatson int error; 1716100979Srwatson 1717100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 1718100979Srwatson 1719100979Srwatson if (!mac_enforce_fs) 1720100979Srwatson return (0); 1721100979Srwatson 1722100979Srwatson error = vn_refreshlabel(vp, cred); 1723100979Srwatson if (error) 1724100979Srwatson return (error); 1725100979Srwatson 1726100979Srwatson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 1727100979Srwatson attrnamespace, name, uio); 1728100979Srwatson return (error); 1729100979Srwatson} 1730100979Srwatson 1731100979Srwatsonint 1732100979Srwatsonmac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 1733100979Srwatson struct componentname *cnp) 1734100979Srwatson{ 1735100979Srwatson int error; 1736100979Srwatson 1737100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 1738100979Srwatson 1739100979Srwatson if (!mac_enforce_fs) 1740100979Srwatson return (0); 1741100979Srwatson 1742100979Srwatson error = vn_refreshlabel(dvp, cred); 1743100979Srwatson if (error) 1744100979Srwatson return (error); 1745100979Srwatson 1746100979Srwatson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 1747100979Srwatson return (error); 1748100979Srwatson} 1749100979Srwatson 1750100979Srwatsonvm_prot_t 1751100979Srwatsonmac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 1752100979Srwatson{ 1753100979Srwatson vm_prot_t result = VM_PROT_ALL; 1754100979Srwatson 1755100979Srwatson /* 1756100979Srwatson * This should be some sort of MAC_BITWISE, maybe :) 1757100979Srwatson */ 1758100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 1759100979Srwatson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 1760100979Srwatson newmapping); 1761100979Srwatson return (result); 1762100979Srwatson} 1763100979Srwatson 1764100979Srwatsonint 1765100979Srwatsonmac_check_vnode_op(struct ucred *cred, struct vnode *vp, int op) 1766100979Srwatson{ 1767100979Srwatson int error; 1768100979Srwatson 1769100979Srwatson if (!mac_enforce_fs) 1770100979Srwatson return (0); 1771100979Srwatson 1772100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_op"); 1773100979Srwatson 1774100979Srwatson error = vn_refreshlabel(vp, cred); 1775100979Srwatson if (error) 1776100979Srwatson return (error); 1777100979Srwatson 1778100979Srwatson MAC_CHECK(check_vnode_op, cred, vp, &vp->v_label, op); 1779100979Srwatson 1780100979Srwatson return (error); 1781100979Srwatson} 1782100979Srwatson 1783100979Srwatsonint 1784100979Srwatsonmac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 1785100979Srwatson{ 1786100979Srwatson int error; 1787100979Srwatson 1788100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 1789100979Srwatson 1790100979Srwatson if (!mac_enforce_fs) 1791100979Srwatson return (0); 1792100979Srwatson 1793100979Srwatson error = vn_refreshlabel(vp, cred); 1794100979Srwatson if (error) 1795100979Srwatson return (error); 1796100979Srwatson 1797100979Srwatson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 1798100979Srwatson return (error); 1799100979Srwatson} 1800100979Srwatson 1801100979Srwatsonint 1802100979Srwatsonmac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 1803100979Srwatson{ 1804100979Srwatson int error; 1805100979Srwatson 1806100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 1807100979Srwatson 1808100979Srwatson if (!mac_enforce_fs) 1809100979Srwatson return (0); 1810100979Srwatson 1811100979Srwatson error = vn_refreshlabel(dvp, cred); 1812100979Srwatson if (error) 1813100979Srwatson return (error); 1814100979Srwatson 1815100979Srwatson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 1816100979Srwatson return (error); 1817100979Srwatson} 1818100979Srwatson 1819100979Srwatsonint 1820100979Srwatsonmac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 1821100979Srwatson{ 1822100979Srwatson int error; 1823100979Srwatson 1824100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 1825100979Srwatson 1826100979Srwatson if (!mac_enforce_fs) 1827100979Srwatson return (0); 1828100979Srwatson 1829100979Srwatson error = vn_refreshlabel(vp, cred); 1830100979Srwatson if (error) 1831100979Srwatson return (error); 1832100979Srwatson 1833100979Srwatson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 1834100979Srwatson return (error); 1835100979Srwatson} 1836100979Srwatson 1837100979Srwatsonstatic int 1838100979Srwatsonmac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 1839100979Srwatson struct label *newlabel) 1840100979Srwatson{ 1841100979Srwatson int error; 1842100979Srwatson 1843100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 1844100979Srwatson 1845100979Srwatson error = vn_refreshlabel(vp, cred); 1846100979Srwatson if (error) 1847100979Srwatson return (error); 1848100979Srwatson 1849100979Srwatson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 1850100979Srwatson 1851100979Srwatson return (error); 1852100979Srwatson} 1853100979Srwatson 1854100979Srwatsonint 1855100979Srwatsonmac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 1856100979Srwatson struct vnode *vp, struct componentname *cnp) 1857100979Srwatson{ 1858100979Srwatson int error; 1859100979Srwatson 1860100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 1861100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 1862100979Srwatson 1863100979Srwatson if (!mac_enforce_fs) 1864100979Srwatson return (0); 1865100979Srwatson 1866100979Srwatson error = vn_refreshlabel(dvp, cred); 1867100979Srwatson if (error) 1868100979Srwatson return (error); 1869100979Srwatson error = vn_refreshlabel(vp, cred); 1870100979Srwatson if (error) 1871100979Srwatson return (error); 1872100979Srwatson 1873100979Srwatson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 1874100979Srwatson &vp->v_label, cnp); 1875100979Srwatson return (error); 1876100979Srwatson} 1877100979Srwatson 1878100979Srwatsonint 1879100979Srwatsonmac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 1880100979Srwatson struct vnode *vp, int samedir, struct componentname *cnp) 1881100979Srwatson{ 1882100979Srwatson int error; 1883100979Srwatson 1884100979Srwatson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 1885100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 1886100979Srwatson 1887100979Srwatson if (!mac_enforce_fs) 1888100979Srwatson return (0); 1889100979Srwatson 1890100979Srwatson error = vn_refreshlabel(dvp, cred); 1891100979Srwatson if (error) 1892100979Srwatson return (error); 1893100979Srwatson if (vp != NULL) { 1894100979Srwatson error = vn_refreshlabel(vp, cred); 1895100979Srwatson if (error) 1896100979Srwatson return (error); 1897100979Srwatson } 1898100979Srwatson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 1899100979Srwatson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 1900100979Srwatson return (error); 1901100979Srwatson} 1902100979Srwatson 1903100979Srwatsonint 1904100979Srwatsonmac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 1905100979Srwatson{ 1906100979Srwatson int error; 1907100979Srwatson 1908100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 1909100979Srwatson 1910100979Srwatson if (!mac_enforce_fs) 1911100979Srwatson return (0); 1912100979Srwatson 1913100979Srwatson error = vn_refreshlabel(vp, cred); 1914100979Srwatson if (error) 1915100979Srwatson return (error); 1916100979Srwatson 1917100979Srwatson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 1918100979Srwatson return (error); 1919100979Srwatson} 1920100979Srwatson 1921100979Srwatsonint 1922100979Srwatsonmac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 1923100979Srwatson struct acl *acl) 1924100979Srwatson{ 1925100979Srwatson int error; 1926100979Srwatson 1927100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 1928100979Srwatson 1929100979Srwatson if (!mac_enforce_fs) 1930100979Srwatson return (0); 1931100979Srwatson 1932100979Srwatson error = vn_refreshlabel(vp, cred); 1933100979Srwatson if (error) 1934100979Srwatson return (error); 1935100979Srwatson 1936100979Srwatson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 1937100979Srwatson return (error); 1938100979Srwatson} 1939100979Srwatson 1940100979Srwatsonint 1941100979Srwatsonmac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 1942100979Srwatson int attrnamespace, const char *name, struct uio *uio) 1943100979Srwatson{ 1944100979Srwatson int error; 1945100979Srwatson 1946100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 1947100979Srwatson 1948100979Srwatson if (!mac_enforce_fs) 1949100979Srwatson return (0); 1950100979Srwatson 1951100979Srwatson error = vn_refreshlabel(vp, cred); 1952100979Srwatson if (error) 1953100979Srwatson return (error); 1954100979Srwatson 1955100979Srwatson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 1956100979Srwatson attrnamespace, name, uio); 1957100979Srwatson return (error); 1958100979Srwatson} 1959100979Srwatson 1960100979Srwatsonint 1961100979Srwatsonmac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 1962100979Srwatson{ 1963100979Srwatson int error; 1964100979Srwatson 1965100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 1966100979Srwatson 1967100979Srwatson if (!mac_enforce_fs) 1968100979Srwatson return (0); 1969100979Srwatson 1970100979Srwatson error = vn_refreshlabel(vp, cred); 1971100979Srwatson if (error) 1972100979Srwatson return (error); 1973100979Srwatson 1974100979Srwatson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 1975100979Srwatson return (error); 1976100979Srwatson} 1977100979Srwatson 1978100979Srwatsonint 1979100979Srwatsonmac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 1980100979Srwatson{ 1981100979Srwatson int error; 1982100979Srwatson 1983100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 1984100979Srwatson 1985100979Srwatson if (!mac_enforce_fs) 1986100979Srwatson return (0); 1987100979Srwatson 1988100979Srwatson error = vn_refreshlabel(vp, cred); 1989100979Srwatson if (error) 1990100979Srwatson return (error); 1991100979Srwatson 1992100979Srwatson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 1993100979Srwatson return (error); 1994100979Srwatson} 1995100979Srwatson 1996100979Srwatsonint 1997100979Srwatsonmac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 1998100979Srwatson gid_t gid) 1999100979Srwatson{ 2000100979Srwatson int error; 2001100979Srwatson 2002100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 2003100979Srwatson 2004100979Srwatson if (!mac_enforce_fs) 2005100979Srwatson return (0); 2006100979Srwatson 2007100979Srwatson error = vn_refreshlabel(vp, cred); 2008100979Srwatson if (error) 2009100979Srwatson return (error); 2010100979Srwatson 2011100979Srwatson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 2012100979Srwatson return (error); 2013100979Srwatson} 2014100979Srwatson 2015100979Srwatsonint 2016100979Srwatsonmac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 2017100979Srwatson struct timespec atime, struct timespec mtime) 2018100979Srwatson{ 2019100979Srwatson int error; 2020100979Srwatson 2021100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 2022100979Srwatson 2023100979Srwatson if (!mac_enforce_fs) 2024100979Srwatson return (0); 2025100979Srwatson 2026100979Srwatson error = vn_refreshlabel(vp, cred); 2027100979Srwatson if (error) 2028100979Srwatson return (error); 2029100979Srwatson 2030100979Srwatson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 2031100979Srwatson mtime); 2032100979Srwatson return (error); 2033100979Srwatson} 2034100979Srwatson 2035100979Srwatsonint 2036100979Srwatsonmac_check_vnode_stat(struct ucred *cred, struct vnode *vp) 2037100979Srwatson{ 2038100979Srwatson int error; 2039100979Srwatson 2040100979Srwatson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 2041100979Srwatson 2042100979Srwatson if (!mac_enforce_fs) 2043100979Srwatson return (0); 2044100979Srwatson 2045100979Srwatson error = vn_refreshlabel(vp, cred); 2046100979Srwatson if (error) 2047100979Srwatson return (error); 2048100979Srwatson 2049100979Srwatson MAC_CHECK(check_vnode_stat, cred, vp, &vp->v_label); 2050100979Srwatson return (error); 2051100979Srwatson} 2052100979Srwatson 2053100979Srwatson/* 2054100979Srwatson * When relabeling a process, call out to the policies for the maximum 2055100979Srwatson * permission allowed for each object type we know about in its 2056100979Srwatson * memory space, and revoke access (in the least surprising ways we 2057100979Srwatson * know) when necessary. The process lock is not held here. 2058100979Srwatson */ 2059100979Srwatsonstatic void 2060100979Srwatsonmac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 2061100979Srwatson{ 2062100979Srwatson 2063100979Srwatson /* XXX freeze all other threads */ 2064100979Srwatson mtx_lock(&Giant); 2065100979Srwatson mac_cred_mmapped_drop_perms_recurse(td, cred, 2066100979Srwatson &td->td_proc->p_vmspace->vm_map); 2067100979Srwatson mtx_unlock(&Giant); 2068100979Srwatson /* XXX allow other threads to continue */ 2069100979Srwatson} 2070100979Srwatson 2071100979Srwatsonstatic __inline const char * 2072100979Srwatsonprot2str(vm_prot_t prot) 2073100979Srwatson{ 2074100979Srwatson 2075100979Srwatson switch (prot & VM_PROT_ALL) { 2076100979Srwatson case VM_PROT_READ: 2077100979Srwatson return ("r--"); 2078100979Srwatson case VM_PROT_READ | VM_PROT_WRITE: 2079100979Srwatson return ("rw-"); 2080100979Srwatson case VM_PROT_READ | VM_PROT_EXECUTE: 2081100979Srwatson return ("r-x"); 2082100979Srwatson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 2083100979Srwatson return ("rwx"); 2084100979Srwatson case VM_PROT_WRITE: 2085100979Srwatson return ("-w-"); 2086100979Srwatson case VM_PROT_EXECUTE: 2087100979Srwatson return ("--x"); 2088100979Srwatson case VM_PROT_WRITE | VM_PROT_EXECUTE: 2089100979Srwatson return ("-wx"); 2090100979Srwatson default: 2091100979Srwatson return ("---"); 2092100979Srwatson } 2093100979Srwatson} 2094100979Srwatson 2095100979Srwatsonstatic void 2096100979Srwatsonmac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 2097100979Srwatson struct vm_map *map) 2098100979Srwatson{ 2099100979Srwatson struct vm_map_entry *vme; 2100100979Srwatson vm_prot_t result, revokeperms; 2101100979Srwatson vm_object_t object; 2102100979Srwatson vm_ooffset_t offset; 2103100979Srwatson struct vnode *vp; 2104100979Srwatson 2105100979Srwatson vm_map_lock_read(map); 2106100979Srwatson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 2107100979Srwatson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 2108100979Srwatson mac_cred_mmapped_drop_perms_recurse(td, cred, 2109100979Srwatson vme->object.sub_map); 2110100979Srwatson continue; 2111100979Srwatson } 2112100979Srwatson /* 2113100979Srwatson * Skip over entries that obviously are not shared. 2114100979Srwatson */ 2115100979Srwatson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 2116100979Srwatson !vme->max_protection) 2117100979Srwatson continue; 2118100979Srwatson /* 2119100979Srwatson * Drill down to the deepest backing object. 2120100979Srwatson */ 2121100979Srwatson offset = vme->offset; 2122100979Srwatson object = vme->object.vm_object; 2123100979Srwatson if (object == NULL) 2124100979Srwatson continue; 2125100979Srwatson while (object->backing_object != NULL) { 2126100979Srwatson object = object->backing_object; 2127100979Srwatson offset += object->backing_object_offset; 2128100979Srwatson } 2129100979Srwatson /* 2130100979Srwatson * At the moment, vm_maps and objects aren't considered 2131100979Srwatson * by the MAC system, so only things with backing by a 2132100979Srwatson * normal object (read: vnodes) are checked. 2133100979Srwatson */ 2134100979Srwatson if (object->type != OBJT_VNODE) 2135100979Srwatson continue; 2136100979Srwatson vp = (struct vnode *)object->handle; 2137100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 2138100979Srwatson result = mac_check_vnode_mmap_prot(cred, vp, 0); 2139100979Srwatson VOP_UNLOCK(vp, 0, td); 2140100979Srwatson /* 2141100979Srwatson * Find out what maximum protection we may be allowing 2142100979Srwatson * now but a policy needs to get removed. 2143100979Srwatson */ 2144100979Srwatson revokeperms = vme->max_protection & ~result; 2145100979Srwatson if (!revokeperms) 2146100979Srwatson continue; 2147100979Srwatson printf("pid %d: revoking %s perms from %#lx:%d " 2148100979Srwatson "(max %s/cur %s)\n", td->td_proc->p_pid, 2149100979Srwatson prot2str(revokeperms), vme->start, vme->end - vme->start, 2150100979Srwatson prot2str(vme->max_protection), prot2str(vme->protection)); 2151100979Srwatson vm_map_lock_upgrade(map); 2152100979Srwatson /* 2153100979Srwatson * This is the really simple case: if a map has more 2154100979Srwatson * max_protection than is allowed, but it's not being 2155100979Srwatson * actually used (that is, the current protection is 2156100979Srwatson * still allowed), we can just wipe it out and do 2157100979Srwatson * nothing more. 2158100979Srwatson */ 2159100979Srwatson if ((vme->protection & revokeperms) == 0) { 2160100979Srwatson vme->max_protection -= revokeperms; 2161100979Srwatson } else { 2162100979Srwatson if (revokeperms & VM_PROT_WRITE) { 2163100979Srwatson /* 2164100979Srwatson * In the more complicated case, flush out all 2165100979Srwatson * pending changes to the object then turn it 2166100979Srwatson * copy-on-write. 2167100979Srwatson */ 2168100979Srwatson vm_object_reference(object); 2169100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 2170100979Srwatson vm_object_page_clean(object, 2171100979Srwatson OFF_TO_IDX(offset), 2172100979Srwatson OFF_TO_IDX(offset + vme->end - vme->start + 2173100979Srwatson PAGE_MASK), 2174100979Srwatson OBJPC_SYNC); 2175100979Srwatson VOP_UNLOCK(vp, 0, td); 2176100979Srwatson vm_object_deallocate(object); 2177100979Srwatson /* 2178100979Srwatson * Why bother if there's no read permissions 2179100979Srwatson * anymore? For the rest, we need to leave 2180100979Srwatson * the write permissions on for COW, or 2181100979Srwatson * remove them entirely if configured to. 2182100979Srwatson */ 2183100979Srwatson if (!mac_mmap_revocation_via_cow) { 2184100979Srwatson vme->max_protection &= ~VM_PROT_WRITE; 2185100979Srwatson vme->protection &= ~VM_PROT_WRITE; 2186100979Srwatson } if ((revokeperms & VM_PROT_READ) == 0) 2187100979Srwatson vme->eflags |= MAP_ENTRY_COW | 2188100979Srwatson MAP_ENTRY_NEEDS_COPY; 2189100979Srwatson } 2190100979Srwatson if (revokeperms & VM_PROT_EXECUTE) { 2191100979Srwatson vme->max_protection &= ~VM_PROT_EXECUTE; 2192100979Srwatson vme->protection &= ~VM_PROT_EXECUTE; 2193100979Srwatson } 2194100979Srwatson if (revokeperms & VM_PROT_READ) { 2195100979Srwatson vme->max_protection = 0; 2196100979Srwatson vme->protection = 0; 2197100979Srwatson } 2198100979Srwatson pmap_protect(map->pmap, vme->start, vme->end, 2199100979Srwatson vme->protection & ~revokeperms); 2200100979Srwatson vm_map_simplify_entry(map, vme); 2201100979Srwatson } 2202100979Srwatson vm_map_lock_downgrade(map); 2203100979Srwatson } 2204100979Srwatson vm_map_unlock_read(map); 2205100979Srwatson} 2206100979Srwatson 2207100979Srwatson/* 2208100979Srwatson * When the subject's label changes, it may require revocation of privilege 2209100979Srwatson * to mapped objects. This can't be done on-the-fly later with a unified 2210100979Srwatson * buffer cache. 2211100979Srwatson */ 2212100979Srwatsonstatic void 2213100979Srwatsonmac_relabel_cred(struct ucred *cred, struct label *newlabel) 2214100979Srwatson{ 2215100979Srwatson 2216100979Srwatson MAC_PERFORM(relabel_cred, cred, newlabel); 2217100979Srwatson mac_cred_mmapped_drop_perms(curthread, cred); 2218100979Srwatson} 2219100979Srwatson 2220100979Srwatsonvoid 2221100979Srwatsonmac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 2222100979Srwatson{ 2223100979Srwatson 2224100979Srwatson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 2225100979Srwatson} 2226100979Srwatson 2227100979Srwatsonvoid 2228100979Srwatsonmac_create_ifnet(struct ifnet *ifnet) 2229100979Srwatson{ 2230100979Srwatson 2231100979Srwatson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 2232100979Srwatson} 2233100979Srwatson 2234100979Srwatsonvoid 2235100979Srwatsonmac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 2236100979Srwatson{ 2237100979Srwatson 2238100979Srwatson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 2239100979Srwatson} 2240100979Srwatson 2241100979Srwatsonvoid 2242100979Srwatsonmac_create_socket(struct ucred *cred, struct socket *socket) 2243100979Srwatson{ 2244100979Srwatson 2245100979Srwatson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 2246100979Srwatson} 2247100979Srwatson 2248100979Srwatsonvoid 2249100979Srwatsonmac_create_pipe(struct ucred *cred, struct pipe *pipe) 2250100979Srwatson{ 2251100979Srwatson 2252100979Srwatson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 2253100979Srwatson} 2254100979Srwatson 2255100979Srwatsonvoid 2256100979Srwatsonmac_create_socket_from_socket(struct socket *oldsocket, 2257100979Srwatson struct socket *newsocket) 2258100979Srwatson{ 2259100979Srwatson 2260100979Srwatson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 2261100979Srwatson newsocket, &newsocket->so_label); 2262100979Srwatson} 2263100979Srwatson 2264100979Srwatsonstatic void 2265100979Srwatsonmac_relabel_socket(struct ucred *cred, struct socket *socket, 2266100979Srwatson struct label *newlabel) 2267100979Srwatson{ 2268100979Srwatson 2269100979Srwatson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 2270100979Srwatson} 2271100979Srwatson 2272100979Srwatsonstatic void 2273100979Srwatsonmac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 2274100979Srwatson{ 2275100979Srwatson 2276100979Srwatson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 2277100979Srwatson} 2278100979Srwatson 2279100979Srwatsonvoid 2280100979Srwatsonmac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 2281100979Srwatson{ 2282100979Srwatson 2283100979Srwatson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 2284100979Srwatson socket, &socket->so_peerlabel); 2285100979Srwatson} 2286100979Srwatson 2287100979Srwatsonvoid 2288100979Srwatsonmac_set_socket_peer_from_socket(struct socket *oldsocket, 2289100979Srwatson struct socket *newsocket) 2290100979Srwatson{ 2291100979Srwatson 2292100979Srwatson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 2293100979Srwatson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 2294100979Srwatson} 2295100979Srwatson 2296100979Srwatsonvoid 2297100979Srwatsonmac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 2298100979Srwatson{ 2299100979Srwatson 2300100979Srwatson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 2301100979Srwatson datagram, &datagram->m_pkthdr.label); 2302100979Srwatson} 2303100979Srwatson 2304100979Srwatsonvoid 2305100979Srwatsonmac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 2306100979Srwatson{ 2307100979Srwatson 2308100979Srwatson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 2309100979Srwatson fragment, &fragment->m_pkthdr.label); 2310100979Srwatson} 2311100979Srwatson 2312100979Srwatsonvoid 2313100979Srwatsonmac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 2314100979Srwatson{ 2315100979Srwatson 2316100979Srwatson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 2317100979Srwatson &ipq->ipq_label); 2318100979Srwatson} 2319100979Srwatson 2320100979Srwatsonvoid 2321100979Srwatsonmac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 2322100979Srwatson{ 2323100979Srwatson 2324100979Srwatson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 2325100979Srwatson newmbuf, &newmbuf->m_pkthdr.label); 2326100979Srwatson} 2327100979Srwatson 2328100979Srwatsonvoid 2329100979Srwatsonmac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 2330100979Srwatson{ 2331100979Srwatson 2332100979Srwatson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 2333100979Srwatson &mbuf->m_pkthdr.label); 2334100979Srwatson} 2335100979Srwatson 2336100979Srwatsonvoid 2337100979Srwatsonmac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 2338100979Srwatson{ 2339100979Srwatson 2340100979Srwatson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 2341100979Srwatson &mbuf->m_pkthdr.label); 2342100979Srwatson} 2343100979Srwatson 2344100979Srwatsonvoid 2345100979Srwatsonmac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 2346100979Srwatson{ 2347100979Srwatson 2348100979Srwatson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 2349100979Srwatson &mbuf->m_pkthdr.label); 2350100979Srwatson} 2351100979Srwatson 2352100979Srwatsonvoid 2353100979Srwatsonmac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 2354100979Srwatson struct mbuf *newmbuf) 2355100979Srwatson{ 2356100979Srwatson 2357100979Srwatson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 2358100979Srwatson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 2359100979Srwatson &newmbuf->m_pkthdr.label); 2360100979Srwatson} 2361100979Srwatson 2362100979Srwatsonvoid 2363100979Srwatsonmac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 2364100979Srwatson{ 2365100979Srwatson 2366100979Srwatson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 2367100979Srwatson newmbuf, &newmbuf->m_pkthdr.label); 2368100979Srwatson} 2369100979Srwatson 2370100979Srwatsonint 2371100979Srwatsonmac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 2372100979Srwatson{ 2373100979Srwatson int result; 2374100979Srwatson 2375100979Srwatson result = 1; 2376100979Srwatson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 2377100979Srwatson ipq, &ipq->ipq_label); 2378100979Srwatson 2379100979Srwatson return (result); 2380100979Srwatson} 2381100979Srwatson 2382100979Srwatsonvoid 2383100979Srwatsonmac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 2384100979Srwatson{ 2385100979Srwatson 2386100979Srwatson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 2387100979Srwatson &ipq->ipq_label); 2388100979Srwatson} 2389100979Srwatson 2390100979Srwatsonvoid 2391100979Srwatsonmac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 2392100979Srwatson{ 2393100979Srwatson 2394100979Srwatson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 2395100979Srwatson &mbuf->m_pkthdr.label); 2396100979Srwatson} 2397100979Srwatson 2398100979Srwatsonvoid 2399100979Srwatsonmac_create_mount(struct ucred *cred, struct mount *mp) 2400100979Srwatson{ 2401100979Srwatson 2402100979Srwatson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 2403100979Srwatson &mp->mnt_fslabel); 2404100979Srwatson} 2405100979Srwatson 2406100979Srwatsonvoid 2407100979Srwatsonmac_create_root_mount(struct ucred *cred, struct mount *mp) 2408100979Srwatson{ 2409100979Srwatson 2410100979Srwatson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 2411100979Srwatson &mp->mnt_fslabel); 2412100979Srwatson} 2413100979Srwatson 2414100979Srwatsonint 2415100979Srwatsonmac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 2416100979Srwatson{ 2417100979Srwatson int error; 2418100979Srwatson 2419100979Srwatson if (!mac_enforce_network) 2420100979Srwatson return (0); 2421100979Srwatson 2422100979Srwatson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 2423100979Srwatson &ifnet->if_label); 2424100979Srwatson 2425100979Srwatson return (error); 2426100979Srwatson} 2427100979Srwatson 2428100979Srwatsonstatic int 2429100979Srwatsonmac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 2430100979Srwatson{ 2431100979Srwatson int error; 2432100979Srwatson 2433100979Srwatson MAC_CHECK(check_cred_relabel, cred, newlabel); 2434100979Srwatson 2435100979Srwatson return (error); 2436100979Srwatson} 2437100979Srwatson 2438100979Srwatsonint 2439100979Srwatsonmac_check_cred_visible(struct ucred *u1, struct ucred *u2) 2440100979Srwatson{ 2441100979Srwatson int error; 2442100979Srwatson 2443100979Srwatson if (!mac_enforce_process) 2444100979Srwatson return (0); 2445100979Srwatson 2446100979Srwatson MAC_CHECK(check_cred_visible, u1, u2); 2447100979Srwatson 2448100979Srwatson return (error); 2449100979Srwatson} 2450100979Srwatson 2451100979Srwatsonint 2452100979Srwatsonmac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 2453100979Srwatson{ 2454100979Srwatson int error; 2455100979Srwatson 2456100979Srwatson if (!mac_enforce_network) 2457100979Srwatson return (0); 2458100979Srwatson 2459100979Srwatson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 2460100979Srwatson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 2461100979Srwatson printf("%s%d: not initialized\n", ifnet->if_name, 2462100979Srwatson ifnet->if_unit); 2463100979Srwatson 2464100979Srwatson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 2465100979Srwatson &mbuf->m_pkthdr.label); 2466100979Srwatson 2467100979Srwatson return (error); 2468100979Srwatson} 2469100979Srwatson 2470100979Srwatsonint 2471100979Srwatsonmac_check_mount_stat(struct ucred *cred, struct mount *mount) 2472100979Srwatson{ 2473100979Srwatson int error; 2474100979Srwatson 2475100979Srwatson if (!mac_enforce_fs) 2476100979Srwatson return (0); 2477100979Srwatson 2478100979Srwatson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 2479100979Srwatson 2480100979Srwatson return (error); 2481100979Srwatson} 2482100979Srwatson 2483100979Srwatsonint 2484100979Srwatsonmac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 2485100979Srwatson void *data) 2486100979Srwatson{ 2487100979Srwatson int error; 2488100979Srwatson 2489100979Srwatson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 2490100979Srwatson 2491100979Srwatson return (error); 2492100979Srwatson} 2493100979Srwatson 2494100979Srwatsonint 2495100979Srwatsonmac_check_pipe_op(struct ucred *cred, struct pipe *pipe, int op) 2496100979Srwatson{ 2497100979Srwatson int error; 2498100979Srwatson 2499100979Srwatson MAC_CHECK(check_pipe_op, cred, pipe, pipe->pipe_label, op); 2500100979Srwatson 2501100979Srwatson return (error); 2502100979Srwatson} 2503100979Srwatson 2504100979Srwatsonstatic int 2505100979Srwatsonmac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 2506100979Srwatson struct label *newlabel) 2507100979Srwatson{ 2508100979Srwatson int error; 2509100979Srwatson 2510100979Srwatson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 2511100979Srwatson 2512100979Srwatson return (error); 2513100979Srwatson} 2514100979Srwatson 2515100979Srwatsonint 2516100979Srwatsonmac_check_proc_debug(struct ucred *cred, struct proc *proc) 2517100979Srwatson{ 2518100979Srwatson int error; 2519100979Srwatson 2520102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2521102103Srwatson 2522100979Srwatson if (!mac_enforce_process) 2523100979Srwatson return (0); 2524100979Srwatson 2525100979Srwatson MAC_CHECK(check_proc_debug, cred, proc); 2526100979Srwatson 2527100979Srwatson return (error); 2528100979Srwatson} 2529100979Srwatson 2530100979Srwatsonint 2531100979Srwatsonmac_check_proc_sched(struct ucred *cred, struct proc *proc) 2532100979Srwatson{ 2533100979Srwatson int error; 2534100979Srwatson 2535102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2536102103Srwatson 2537100979Srwatson if (!mac_enforce_process) 2538100979Srwatson return (0); 2539100979Srwatson 2540100979Srwatson MAC_CHECK(check_proc_sched, cred, proc); 2541100979Srwatson 2542100979Srwatson return (error); 2543100979Srwatson} 2544100979Srwatson 2545100979Srwatsonint 2546100979Srwatsonmac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 2547100979Srwatson{ 2548100979Srwatson int error; 2549100979Srwatson 2550102103Srwatson PROC_LOCK_ASSERT(proc, MA_OWNED); 2551102103Srwatson 2552100979Srwatson if (!mac_enforce_process) 2553100979Srwatson return (0); 2554100979Srwatson 2555100979Srwatson MAC_CHECK(check_proc_signal, cred, proc, signum); 2556100979Srwatson 2557100979Srwatson return (error); 2558100979Srwatson} 2559100979Srwatson 2560100979Srwatsonint 2561100979Srwatsonmac_check_socket_bind(struct ucred *ucred, struct socket *socket, 2562100979Srwatson struct sockaddr *sockaddr) 2563100979Srwatson{ 2564100979Srwatson int error; 2565100979Srwatson 2566100979Srwatson if (!mac_enforce_socket) 2567100979Srwatson return (0); 2568100979Srwatson 2569100979Srwatson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 2570100979Srwatson sockaddr); 2571100979Srwatson 2572100979Srwatson return (error); 2573100979Srwatson} 2574100979Srwatson 2575100979Srwatsonint 2576100979Srwatsonmac_check_socket_connect(struct ucred *cred, struct socket *socket, 2577100979Srwatson struct sockaddr *sockaddr) 2578100979Srwatson{ 2579100979Srwatson int error; 2580100979Srwatson 2581100979Srwatson if (!mac_enforce_socket) 2582100979Srwatson return (0); 2583100979Srwatson 2584100979Srwatson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 2585100979Srwatson sockaddr); 2586100979Srwatson 2587100979Srwatson return (error); 2588100979Srwatson} 2589100979Srwatson 2590100979Srwatsonint 2591101933Srwatsonmac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2592100979Srwatson{ 2593100979Srwatson int error; 2594100979Srwatson 2595100979Srwatson if (!mac_enforce_socket) 2596100979Srwatson return (0); 2597100979Srwatson 2598101933Srwatson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2599101933Srwatson &mbuf->m_pkthdr.label); 2600101933Srwatson 2601100979Srwatson return (error); 2602100979Srwatson} 2603100979Srwatson 2604100979Srwatsonint 2605101933Srwatsonmac_check_socket_listen(struct ucred *cred, struct socket *socket) 2606100979Srwatson{ 2607100979Srwatson int error; 2608100979Srwatson 2609100979Srwatson if (!mac_enforce_socket) 2610100979Srwatson return (0); 2611100979Srwatson 2612101933Srwatson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 2613100979Srwatson return (error); 2614100979Srwatson} 2615100979Srwatson 2616100979Srwatsonstatic int 2617100979Srwatsonmac_check_socket_relabel(struct ucred *cred, struct socket *socket, 2618100979Srwatson struct label *newlabel) 2619100979Srwatson{ 2620100979Srwatson int error; 2621100979Srwatson 2622100979Srwatson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 2623100979Srwatson newlabel); 2624100979Srwatson 2625100979Srwatson return (error); 2626100979Srwatson} 2627100979Srwatson 2628100979Srwatsonint 2629100979Srwatsonmac_check_socket_visible(struct ucred *cred, struct socket *socket) 2630100979Srwatson{ 2631100979Srwatson int error; 2632100979Srwatson 2633100979Srwatson if (!mac_enforce_socket) 2634100979Srwatson return (0); 2635100979Srwatson 2636100979Srwatson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 2637100979Srwatson 2638100979Srwatson return (error); 2639100979Srwatson} 2640100979Srwatson 2641100979Srwatsonint 2642100979Srwatsonmac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 2643100979Srwatson struct ifnet *ifnet) 2644100979Srwatson{ 2645100979Srwatson struct mac label; 2646100979Srwatson int error; 2647100979Srwatson 2648100979Srwatson error = mac_externalize(&ifnet->if_label, &label); 2649100979Srwatson if (error) 2650100979Srwatson return (error); 2651100979Srwatson 2652100979Srwatson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 2653100979Srwatson} 2654100979Srwatson 2655100979Srwatsonint 2656100979Srwatsonmac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 2657100979Srwatson struct ifnet *ifnet) 2658100979Srwatson{ 2659100979Srwatson struct mac newlabel; 2660100979Srwatson struct label intlabel; 2661100979Srwatson int error; 2662100979Srwatson 2663100979Srwatson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 2664100979Srwatson if (error) 2665100979Srwatson return (error); 2666100979Srwatson 2667100979Srwatson error = mac_internalize(&intlabel, &newlabel); 2668100979Srwatson if (error) 2669100979Srwatson return (error); 2670100979Srwatson 2671100979Srwatson /* 2672100979Srwatson * XXX: Note that this is a redundant privilege check, since 2673100979Srwatson * policies impose this check themselves if required by the 2674100979Srwatson * policy. Eventually, this should go away. 2675100979Srwatson */ 2676100979Srwatson error = suser_cred(cred, 0); 2677100979Srwatson if (error) 2678100979Srwatson goto out; 2679100979Srwatson 2680100979Srwatson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 2681100979Srwatson &intlabel); 2682100979Srwatson if (error) 2683100979Srwatson goto out; 2684100979Srwatson 2685100979Srwatson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 2686100979Srwatson 2687100979Srwatsonout: 2688100979Srwatson mac_destroy_temp(&intlabel); 2689100979Srwatson return (error); 2690100979Srwatson} 2691100979Srwatson 2692100979Srwatsonvoid 2693100979Srwatsonmac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 2694100979Srwatson{ 2695100979Srwatson 2696100979Srwatson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 2697100979Srwatson} 2698100979Srwatson 2699100979Srwatsonvoid 2700100979Srwatsonmac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 2701100979Srwatson{ 2702100979Srwatson 2703100979Srwatson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 2704100979Srwatson} 2705100979Srwatson 2706100979Srwatsonstatic int 2707100979Srwatsonmac_stdcreatevnode_ea(struct vnode *vp) 2708100979Srwatson{ 2709100979Srwatson int error; 2710100979Srwatson 2711100979Srwatson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 2712100979Srwatson 2713100979Srwatson return (error); 2714100979Srwatson} 2715100979Srwatson 2716100979Srwatsonvoid 2717100979Srwatsonmac_create_devfs_directory(char *dirname, int dirnamelen, 2718100979Srwatson struct devfs_dirent *de) 2719100979Srwatson{ 2720100979Srwatson 2721100979Srwatson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 2722100979Srwatson &de->de_label); 2723100979Srwatson} 2724100979Srwatson 2725100979Srwatson/* 2726100979Srwatson * When a new vnode is created, this call will initialize its label. 2727100979Srwatson */ 2728100979Srwatsonvoid 2729100979Srwatsonmac_create_vnode(struct ucred *cred, struct vnode *parent, 2730100979Srwatson struct vnode *child) 2731100979Srwatson{ 2732100979Srwatson int error; 2733100979Srwatson 2734100979Srwatson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 2735100979Srwatson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 2736100979Srwatson 2737100979Srwatson error = vn_refreshlabel(parent, cred); 2738100979Srwatson if (error) { 2739100979Srwatson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 2740100979Srwatson error); 2741100979Srwatson printf("mac_create_vnode: using old vnode label\n"); 2742100979Srwatson } 2743100979Srwatson 2744100979Srwatson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 2745100979Srwatson &child->v_label); 2746100979Srwatson} 2747100979Srwatson 2748100979Srwatsonint 2749100979Srwatsonmac_setsockopt_label_set(struct ucred *cred, struct socket *so, 2750100979Srwatson struct mac *extmac) 2751100979Srwatson{ 2752100979Srwatson struct label intlabel; 2753100979Srwatson int error; 2754100979Srwatson 2755100979Srwatson error = mac_internalize(&intlabel, extmac); 2756100979Srwatson if (error) 2757100979Srwatson return (error); 2758100979Srwatson 2759100979Srwatson mac_check_socket_relabel(cred, so, &intlabel); 2760100979Srwatson if (error) { 2761100979Srwatson mac_destroy_temp(&intlabel); 2762100979Srwatson return (error); 2763100979Srwatson } 2764100979Srwatson 2765100979Srwatson mac_relabel_socket(cred, so, &intlabel); 2766100979Srwatson 2767100979Srwatson mac_destroy_temp(&intlabel); 2768100979Srwatson return (0); 2769100979Srwatson} 2770100979Srwatson 2771100979Srwatsonint 2772100979Srwatsonmac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 2773100979Srwatson{ 2774100979Srwatson int error; 2775100979Srwatson 2776100979Srwatson error = mac_check_pipe_relabel(cred, pipe, label); 2777100979Srwatson if (error) 2778100979Srwatson return (error); 2779100979Srwatson 2780100979Srwatson mac_relabel_pipe(cred, pipe, label); 2781100979Srwatson 2782100979Srwatson return (0); 2783100979Srwatson} 2784100979Srwatson 2785100979Srwatsonint 2786100979Srwatsonmac_getsockopt_label_get(struct ucred *cred, struct socket *so, 2787100979Srwatson struct mac *extmac) 2788100979Srwatson{ 2789100979Srwatson 2790100979Srwatson return (mac_externalize(&so->so_label, extmac)); 2791100979Srwatson} 2792100979Srwatson 2793100979Srwatsonint 2794100979Srwatsonmac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 2795100979Srwatson struct mac *extmac) 2796100979Srwatson{ 2797100979Srwatson 2798100979Srwatson return (mac_externalize(&so->so_peerlabel, extmac)); 2799100979Srwatson} 2800100979Srwatson 2801100979Srwatson/* 2802100979Srwatson * Implementation of VOP_SETLABEL() that relies on extended attributes 2803100979Srwatson * to store label data. Can be referenced by filesystems supporting 2804100979Srwatson * extended attributes. 2805100979Srwatson */ 2806100979Srwatsonint 2807100979Srwatsonvop_stdsetlabel_ea(struct vop_setlabel_args *ap) 2808100979Srwatson{ 2809100979Srwatson struct vnode *vp = ap->a_vp; 2810100979Srwatson struct label *intlabel = ap->a_label; 2811100979Srwatson struct mac extmac; 2812100979Srwatson int error; 2813100979Srwatson 2814100979Srwatson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 2815100979Srwatson 2816100979Srwatson /* 2817100979Srwatson * XXX: Eventually call out to EA check/set calls here. 2818100979Srwatson * Be particularly careful to avoid race conditions, 2819100979Srwatson * consistency problems, and stability problems when 2820100979Srwatson * dealing with multiple EAs. In particular, we require 2821100979Srwatson * the ability to write multiple EAs on the same file in 2822100979Srwatson * a single transaction, which the current EA interface 2823100979Srwatson * does not provide. 2824100979Srwatson */ 2825100979Srwatson 2826100979Srwatson error = mac_externalize(intlabel, &extmac); 2827100979Srwatson if (error) 2828100979Srwatson return (error); 2829100979Srwatson 2830100979Srwatson error = vn_extattr_set(vp, IO_NODELOCKED, 2831100979Srwatson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 2832100979Srwatson sizeof(extmac), (char *)&extmac, curthread); 2833100979Srwatson if (error) 2834100979Srwatson return (error); 2835100979Srwatson 2836100979Srwatson mac_relabel_vnode(ap->a_cred, vp, intlabel); 2837100979Srwatson 2838101308Sjeff vp->v_vflag |= VV_CACHEDLABEL; 2839100979Srwatson 2840100979Srwatson return (0); 2841100979Srwatson} 2842100979Srwatson 2843100979Srwatsonstatic int 2844100979Srwatsonvn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 2845100979Srwatson{ 2846100979Srwatson int error; 2847100979Srwatson 2848100979Srwatson if (vp->v_mount == NULL) { 2849100979Srwatson /* printf("vn_setlabel: null v_mount\n"); */ 2850100979Srwatson if (vp->v_tag != VT_NON) 2851100979Srwatson printf("vn_setlabel: null v_mount with non-VT_NON\n"); 2852100979Srwatson return (EBADF); 2853100979Srwatson } 2854100979Srwatson 2855100979Srwatson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 2856100979Srwatson return (EOPNOTSUPP); 2857100979Srwatson 2858100979Srwatson /* 2859100979Srwatson * Multi-phase commit. First check the policies to confirm the 2860100979Srwatson * change is OK. Then commit via the filesystem. Finally, 2861100979Srwatson * update the actual vnode label. Question: maybe the filesystem 2862100979Srwatson * should update the vnode at the end as part of VOP_SETLABEL()? 2863100979Srwatson */ 2864100979Srwatson error = mac_check_vnode_relabel(cred, vp, intlabel); 2865100979Srwatson if (error) 2866100979Srwatson return (error); 2867100979Srwatson 2868100979Srwatson /* 2869100979Srwatson * VADMIN provides the opportunity for the filesystem to make 2870100979Srwatson * decisions about who is and is not able to modify labels 2871100979Srwatson * and protections on files. This might not be right. We can't 2872100979Srwatson * assume VOP_SETLABEL() will do it, because we might implement 2873100979Srwatson * that as part of vop_stdsetlabel_ea(). 2874100979Srwatson */ 2875100979Srwatson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 2876100979Srwatson if (error) 2877100979Srwatson return (error); 2878100979Srwatson 2879100979Srwatson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 2880100979Srwatson if (error) 2881100979Srwatson return (error); 2882100979Srwatson 2883100979Srwatson return (0); 2884100979Srwatson} 2885100979Srwatson 2886100979Srwatson/* 2887100979Srwatson * MPSAFE 2888100979Srwatson */ 2889100979Srwatsonint 2890100894Srwatson__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 2891100894Srwatson{ 2892100979Srwatson struct mac extmac; 2893100979Srwatson int error; 2894100894Srwatson 2895100979Srwatson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 2896100979Srwatson if (error == 0) 2897100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 2898100979Srwatson 2899100979Srwatson return (error); 2900100979Srwatson} 2901100979Srwatson 2902100979Srwatson/* 2903100979Srwatson * MPSAFE 2904100979Srwatson * 2905100979Srwatson * XXX: Needs to be re-written for proc locking. 2906100979Srwatson */ 2907100979Srwatsonint 2908100979Srwatson__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 2909100979Srwatson{ 2910100979Srwatson struct ucred *newcred, *oldcred; 2911100979Srwatson struct proc *p; 2912100979Srwatson struct mac extmac; 2913100979Srwatson struct label intlabel; 2914100979Srwatson int error; 2915100979Srwatson 2916100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 2917100979Srwatson if (error) 2918100979Srwatson return (error); 2919100979Srwatson 2920100979Srwatson error = mac_internalize(&intlabel, &extmac); 2921100979Srwatson if (error) 2922100979Srwatson return (error); 2923100979Srwatson 2924100979Srwatson newcred = crget(); 2925100979Srwatson 2926100979Srwatson p = td->td_proc; 2927100979Srwatson PROC_LOCK(p); 2928100979Srwatson oldcred = p->p_ucred; 2929100979Srwatson 2930100979Srwatson error = mac_check_cred_relabel(oldcred, &intlabel); 2931100979Srwatson if (error) { 2932100979Srwatson PROC_UNLOCK(p); 2933100979Srwatson mac_destroy_temp(&intlabel); 2934100979Srwatson crfree(newcred); 2935100979Srwatson return (error); 2936100979Srwatson } 2937100979Srwatson 2938100979Srwatson setsugid(p); 2939100979Srwatson crcopy(newcred, oldcred); 2940100979Srwatson PROC_UNLOCK(p); 2941100979Srwatson mac_relabel_cred(newcred, &intlabel); 2942100979Srwatson 2943100979Srwatson PROC_LOCK(p); 2944100979Srwatson p->p_ucred = newcred; 2945100979Srwatson PROC_UNLOCK(p); 2946100979Srwatson crfree(oldcred); 2947100979Srwatson mac_destroy_temp(&intlabel); 2948100979Srwatson return (0); 2949100979Srwatson} 2950100979Srwatson 2951100979Srwatson/* 2952100979Srwatson * MPSAFE 2953100979Srwatson */ 2954100979Srwatsonint 2955100979Srwatson__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 2956100979Srwatson{ 2957100979Srwatson struct file *fp; 2958100979Srwatson struct mac extmac; 2959100979Srwatson struct vnode *vp; 2960100979Srwatson struct pipe *pipe; 2961100979Srwatson int error; 2962100979Srwatson 2963100979Srwatson mtx_lock(&Giant); 2964100979Srwatson 2965100979Srwatson error = fget(td, SCARG(uap, fd), &fp); 2966100979Srwatson if (error) 2967100979Srwatson goto out; 2968100979Srwatson 2969100979Srwatson switch (fp->f_type) { 2970100979Srwatson case DTYPE_FIFO: 2971100979Srwatson case DTYPE_VNODE: 2972100979Srwatson vp = (struct vnode *)fp->f_data; 2973100979Srwatson 2974100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 2975100979Srwatson error = vn_refreshlabel(vp, td->td_ucred); 2976100979Srwatson if (error == 0) 2977100979Srwatson error = mac_externalize(&vp->v_label, &extmac); 2978100979Srwatson VOP_UNLOCK(vp, 0, td); 2979100979Srwatson break; 2980100979Srwatson case DTYPE_PIPE: 2981100979Srwatson pipe = (struct pipe *)fp->f_data; 2982100979Srwatson error = mac_externalize(pipe->pipe_label, &extmac); 2983100979Srwatson break; 2984100979Srwatson default: 2985100979Srwatson error = EINVAL; 2986100979Srwatson } 2987100979Srwatson 2988100979Srwatson if (error == 0) 2989100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 2990100979Srwatson 2991100979Srwatson fdrop(fp, td); 2992100979Srwatson 2993100979Srwatsonout: 2994100979Srwatson mtx_unlock(&Giant); 2995100979Srwatson return (error); 2996100979Srwatson} 2997100979Srwatson 2998100979Srwatson/* 2999100979Srwatson * MPSAFE 3000100979Srwatson */ 3001100979Srwatsonint 3002100979Srwatson__mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 3003100979Srwatson{ 3004100979Srwatson struct nameidata nd; 3005100979Srwatson struct mac extmac; 3006100979Srwatson int error; 3007100979Srwatson 3008100979Srwatson mtx_lock(&Giant); 3009100979Srwatson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 3010100979Srwatson SCARG(uap, path_p), td); 3011100979Srwatson error = namei(&nd); 3012100979Srwatson if (error) 3013100979Srwatson goto out; 3014100979Srwatson 3015100979Srwatson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 3016100979Srwatson if (error == 0) 3017100979Srwatson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 3018100979Srwatson NDFREE(&nd, 0); 3019100979Srwatson if (error) 3020100979Srwatson goto out; 3021100979Srwatson 3022100979Srwatson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 3023100979Srwatson 3024100979Srwatsonout: 3025100979Srwatson mtx_unlock(&Giant); 3026100979Srwatson return (error); 3027100979Srwatson} 3028100979Srwatson 3029100979Srwatson/* 3030100979Srwatson * MPSAFE 3031100979Srwatson */ 3032100979Srwatsonint 3033100979Srwatson__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 3034100979Srwatson{ 3035100979Srwatson struct file *fp; 3036100979Srwatson struct mac extmac; 3037100979Srwatson struct label intlabel; 3038100979Srwatson struct mount *mp; 3039100979Srwatson struct vnode *vp; 3040100979Srwatson struct pipe *pipe; 3041100979Srwatson int error; 3042100979Srwatson 3043100979Srwatson mtx_lock(&Giant); 3044100979Srwatson error = fget(td, SCARG(uap, fd), &fp); 3045100979Srwatson if (error) 3046100979Srwatson goto out1; 3047100979Srwatson 3048100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 3049100979Srwatson if (error) 3050100979Srwatson goto out2; 3051100979Srwatson 3052100979Srwatson error = mac_internalize(&intlabel, &extmac); 3053100979Srwatson if (error) 3054100979Srwatson goto out2; 3055100979Srwatson 3056100979Srwatson switch (fp->f_type) { 3057100979Srwatson case DTYPE_FIFO: 3058100979Srwatson case DTYPE_VNODE: 3059100979Srwatson vp = (struct vnode *)fp->f_data; 3060100979Srwatson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 3061100979Srwatson if (error != 0) 3062100979Srwatson break; 3063100979Srwatson 3064100979Srwatson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 3065100979Srwatson error = vn_setlabel(vp, &intlabel, td->td_ucred); 3066100979Srwatson VOP_UNLOCK(vp, 0, td); 3067100979Srwatson vn_finished_write(mp); 3068100979Srwatson mac_destroy_temp(&intlabel); 3069100979Srwatson break; 3070100979Srwatson case DTYPE_PIPE: 3071100979Srwatson pipe = (struct pipe *)fp->f_data; 3072100979Srwatson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 3073100979Srwatson break; 3074100979Srwatson default: 3075100979Srwatson error = EINVAL; 3076100979Srwatson } 3077100979Srwatson 3078100979Srwatsonout2: 3079100979Srwatson fdrop(fp, td); 3080100979Srwatsonout1: 3081100979Srwatson mtx_unlock(&Giant); 3082100979Srwatson return (error); 3083100979Srwatson} 3084100979Srwatson 3085100979Srwatson/* 3086100979Srwatson * MPSAFE 3087100979Srwatson */ 3088100979Srwatsonint 3089100979Srwatson__mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 3090100979Srwatson{ 3091100979Srwatson struct nameidata nd; 3092100979Srwatson struct mac extmac; 3093100979Srwatson struct label intlabel; 3094100979Srwatson struct mount *mp; 3095100979Srwatson int error; 3096100979Srwatson 3097100979Srwatson mtx_lock(&Giant); 3098100979Srwatson 3099100979Srwatson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 3100100979Srwatson if (error) 3101100979Srwatson goto out; 3102100979Srwatson 3103100979Srwatson error = mac_internalize(&intlabel, &extmac); 3104100979Srwatson if (error) 3105100979Srwatson goto out; 3106100979Srwatson 3107100979Srwatson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 3108100979Srwatson SCARG(uap, path_p), td); 3109100979Srwatson error = namei(&nd); 3110100979Srwatson if (error) 3111100979Srwatson goto out2; 3112100979Srwatson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 3113100979Srwatson if (error) 3114100979Srwatson goto out2; 3115100979Srwatson 3116100979Srwatson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 3117100979Srwatson 3118100979Srwatson vn_finished_write(mp); 3119100979Srwatsonout2: 3120100979Srwatson mac_destroy_temp(&intlabel); 3121100979Srwatson NDFREE(&nd, 0); 3122100979Srwatsonout: 3123100979Srwatson mtx_unlock(&Giant); 3124100979Srwatson return (error); 3125100979Srwatson} 3126100979Srwatson 3127100979SrwatsonSYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 3128100979SrwatsonSYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 3129100979Srwatson 3130100979Srwatson#else /* !MAC */ 3131100979Srwatson 3132100979Srwatsonint 3133100979Srwatson__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 3134100979Srwatson{ 3135100979Srwatson 3136100894Srwatson return (ENOSYS); 3137100894Srwatson} 3138100894Srwatson 3139100894Srwatsonint 3140100894Srwatson__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 3141100894Srwatson{ 3142100894Srwatson 3143100894Srwatson return (ENOSYS); 3144100894Srwatson} 3145100894Srwatson 3146100894Srwatsonint 3147100894Srwatson__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 3148100894Srwatson{ 3149100894Srwatson 3150100894Srwatson return (ENOSYS); 3151100894Srwatson} 3152100894Srwatson 3153100894Srwatsonint 3154100894Srwatson__mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 3155100894Srwatson{ 3156100894Srwatson 3157100894Srwatson return (ENOSYS); 3158100894Srwatson} 3159100894Srwatson 3160100894Srwatsonint 3161100894Srwatson__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 3162100894Srwatson{ 3163100894Srwatson 3164100894Srwatson return (ENOSYS); 3165100894Srwatson} 3166100894Srwatson 3167100894Srwatsonint 3168100894Srwatson__mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 3169100894Srwatson{ 3170100894Srwatson 3171100894Srwatson return (ENOSYS); 3172100894Srwatson} 3173100979Srwatson 3174100979Srwatson#endif /* !MAC */ 3175