17bc82500SRobert Watson /*- 27bc82500SRobert Watson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 37bc82500SRobert Watson * Copyright (c) 2001 Ilmar S. Habibulin 47bc82500SRobert Watson * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 57bc82500SRobert Watson * All rights reserved. 67bc82500SRobert Watson * 77bc82500SRobert Watson * This software was developed by Robert Watson and Ilmar Habibulin for the 87bc82500SRobert Watson * TrustedBSD Project. 97bc82500SRobert Watson * 107bc82500SRobert Watson * This software was developed for the FreeBSD Project in part by NAI Labs, 117bc82500SRobert Watson * the Security Research Division of Network Associates, Inc. under 127bc82500SRobert Watson * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 137bc82500SRobert Watson * CHATS research program. 147bc82500SRobert Watson * 157bc82500SRobert Watson * Redistribution and use in source and binary forms, with or without 167bc82500SRobert Watson * modification, are permitted provided that the following conditions 177bc82500SRobert Watson * are met: 187bc82500SRobert Watson * 1. Redistributions of source code must retain the above copyright 197bc82500SRobert Watson * notice, this list of conditions and the following disclaimer. 207bc82500SRobert Watson * 2. Redistributions in binary form must reproduce the above copyright 217bc82500SRobert Watson * notice, this list of conditions and the following disclaimer in the 227bc82500SRobert Watson * documentation and/or other materials provided with the distribution. 237bc82500SRobert Watson * 3. The names of the authors may not be used to endorse or promote 247bc82500SRobert Watson * products derived from this software without specific prior written 257bc82500SRobert Watson * permission. 267bc82500SRobert Watson * 277bc82500SRobert Watson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 287bc82500SRobert Watson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 297bc82500SRobert Watson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 307bc82500SRobert Watson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 317bc82500SRobert Watson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 327bc82500SRobert Watson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 337bc82500SRobert Watson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 347bc82500SRobert Watson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 357bc82500SRobert Watson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 367bc82500SRobert Watson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 377bc82500SRobert Watson * SUCH DAMAGE. 387bc82500SRobert Watson * 397bc82500SRobert Watson * $FreeBSD$ 407bc82500SRobert Watson */ 417bc82500SRobert Watson /* 427bc82500SRobert Watson * Developed by the TrustedBSD Project. 437bc82500SRobert Watson * 447bc82500SRobert Watson * Framework for extensible kernel access control. Kernel and userland 457bc82500SRobert Watson * interface to the framework, policy registration and composition. 467bc82500SRobert Watson */ 477bc82500SRobert Watson 487bc82500SRobert Watson #include "opt_mac.h" 49f9d0d524SRobert Watson 507bc82500SRobert Watson #include <sys/param.h> 5195fab37eSRobert Watson #include <sys/extattr.h> 5295fab37eSRobert Watson #include <sys/kernel.h> 5395fab37eSRobert Watson #include <sys/lock.h> 5495fab37eSRobert Watson #include <sys/mutex.h> 5595fab37eSRobert Watson #include <sys/sx.h> 5695fab37eSRobert Watson #include <sys/mac.h> 577ba28492SRobert Watson #include <sys/module.h> 5895fab37eSRobert Watson #include <sys/proc.h> 5995fab37eSRobert Watson #include <sys/systm.h> 607bc82500SRobert Watson #include <sys/sysproto.h> 617bc82500SRobert Watson #include <sys/sysent.h> 6295fab37eSRobert Watson #include <sys/vnode.h> 6395fab37eSRobert Watson #include <sys/mount.h> 6495fab37eSRobert Watson #include <sys/file.h> 6595fab37eSRobert Watson #include <sys/namei.h> 6695fab37eSRobert Watson #include <sys/socket.h> 6795fab37eSRobert Watson #include <sys/pipe.h> 6895fab37eSRobert Watson #include <sys/socketvar.h> 6995fab37eSRobert Watson #include <sys/sx.h> 7095fab37eSRobert Watson #include <sys/sysctl.h> 7195fab37eSRobert Watson 7295fab37eSRobert Watson #include <vm/vm.h> 7395fab37eSRobert Watson #include <vm/pmap.h> 7495fab37eSRobert Watson #include <vm/vm_map.h> 7595fab37eSRobert Watson #include <vm/vm_object.h> 7695fab37eSRobert Watson 7795fab37eSRobert Watson #include <sys/mac_policy.h> 7895fab37eSRobert Watson 7995fab37eSRobert Watson #include <fs/devfs/devfs.h> 8095fab37eSRobert Watson 8195fab37eSRobert Watson #include <net/bpf.h> 8295fab37eSRobert Watson #include <net/bpfdesc.h> 8395fab37eSRobert Watson #include <net/if.h> 8495fab37eSRobert Watson #include <net/if_var.h> 8595fab37eSRobert Watson 8695fab37eSRobert Watson #include <netinet/in.h> 8795fab37eSRobert Watson #include <netinet/ip_var.h> 8895fab37eSRobert Watson 8995fab37eSRobert Watson #ifdef MAC 9095fab37eSRobert Watson 917ba28492SRobert Watson /* 927ba28492SRobert Watson * Declare that the kernel provides MAC support, version 1. This permits 937ba28492SRobert Watson * modules to refuse to be loaded if the necessary support isn't present, 947ba28492SRobert Watson * even if it's pre-boot. 957ba28492SRobert Watson */ 967ba28492SRobert Watson MODULE_VERSION(kernel_mac_support, 1); 977ba28492SRobert Watson 9895fab37eSRobert Watson SYSCTL_DECL(_security); 9995fab37eSRobert Watson 10095fab37eSRobert Watson SYSCTL_NODE(_security, OID_AUTO, mac, CTLFLAG_RW, 0, 10195fab37eSRobert Watson "TrustedBSD MAC policy controls"); 10295fab37eSRobert Watson SYSCTL_NODE(_security_mac, OID_AUTO, debug, CTLFLAG_RW, 0, 10395fab37eSRobert Watson "TrustedBSD MAC debug info"); 10495fab37eSRobert Watson 10595fab37eSRobert Watson static int mac_debug_label_fallback = 0; 10695fab37eSRobert Watson SYSCTL_INT(_security_mac_debug, OID_AUTO, label_fallback, CTLFLAG_RW, 10795fab37eSRobert Watson &mac_debug_label_fallback, 0, "Filesystems should fall back to fs label" 10895fab37eSRobert Watson "when label is corrupted."); 10995fab37eSRobert Watson TUNABLE_INT("security.mac.debug_label_fallback", 11095fab37eSRobert Watson &mac_debug_label_fallback); 11195fab37eSRobert Watson 11295fab37eSRobert Watson #ifndef MAC_MAX_POLICIES 11395fab37eSRobert Watson #define MAC_MAX_POLICIES 8 11495fab37eSRobert Watson #endif 11595fab37eSRobert Watson #if MAC_MAX_POLICIES > 32 11695fab37eSRobert Watson #error "MAC_MAX_POLICIES too large" 11795fab37eSRobert Watson #endif 11895fab37eSRobert Watson static unsigned int mac_max_policies = MAC_MAX_POLICIES; 11995fab37eSRobert Watson static unsigned int mac_policy_offsets_free = (1 << MAC_MAX_POLICIES) - 1; 12095fab37eSRobert Watson SYSCTL_UINT(_security_mac, OID_AUTO, max_policies, CTLFLAG_RD, 12195fab37eSRobert Watson &mac_max_policies, 0, ""); 12295fab37eSRobert Watson 12395fab37eSRobert Watson static int mac_late = 0; 12495fab37eSRobert Watson 12595fab37eSRobert Watson static int mac_enforce_fs = 1; 12695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_fs, CTLFLAG_RW, 12795fab37eSRobert Watson &mac_enforce_fs, 0, "Enforce MAC policy on file system objects"); 12895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_fs", &mac_enforce_fs); 12995fab37eSRobert Watson 13095fab37eSRobert Watson static int mac_enforce_network = 1; 13195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW, 13295fab37eSRobert Watson &mac_enforce_network, 0, "Enforce MAC policy on network packets"); 13395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_network", &mac_enforce_network); 13495fab37eSRobert Watson 13595fab37eSRobert Watson static int mac_enforce_process = 1; 13695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_process, CTLFLAG_RW, 13795fab37eSRobert Watson &mac_enforce_process, 0, "Enforce MAC policy on inter-process operations"); 13895fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_process", &mac_enforce_process); 13995fab37eSRobert Watson 14095fab37eSRobert Watson static int mac_enforce_socket = 1; 14195fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW, 14295fab37eSRobert Watson &mac_enforce_socket, 0, "Enforce MAC policy on socket operations"); 14395fab37eSRobert Watson TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket); 14495fab37eSRobert Watson 14595fab37eSRobert Watson static int mac_enforce_pipe = 1; 14695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, enforce_pipe, CTLFLAG_RW, 14795fab37eSRobert Watson &mac_enforce_pipe, 0, "Enforce MAC policy on pipe operations"); 14895fab37eSRobert Watson 14995fab37eSRobert Watson static int mac_label_size = sizeof(struct mac); 15095fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, label_size, CTLFLAG_RD, 15195fab37eSRobert Watson &mac_label_size, 0, "Pre-compiled MAC label size"); 15295fab37eSRobert Watson 15395fab37eSRobert Watson static int mac_cache_fslabel_in_vnode = 1; 15495fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, cache_fslabel_in_vnode, CTLFLAG_RW, 15595fab37eSRobert Watson &mac_cache_fslabel_in_vnode, 0, "Cache mount fslabel in vnode"); 15695fab37eSRobert Watson TUNABLE_INT("security.mac.cache_fslabel_in_vnode", 15795fab37eSRobert Watson &mac_cache_fslabel_in_vnode); 15895fab37eSRobert Watson 15995fab37eSRobert Watson static int mac_vnode_label_cache_hits = 0; 16095fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_hits, CTLFLAG_RD, 16195fab37eSRobert Watson &mac_vnode_label_cache_hits, 0, "Cache hits on vnode labels"); 16295fab37eSRobert Watson static int mac_vnode_label_cache_misses = 0; 16395fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD, 16495fab37eSRobert Watson &mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels"); 16599fa64f8SRobert Watson static int mac_mmap_revocation_via_cow = 0; 16695fab37eSRobert Watson SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW, 16795fab37eSRobert Watson &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via " 16895fab37eSRobert Watson "copy-on-write semantics, or by removing all write access"); 16995fab37eSRobert Watson 170f050add5SRobert Watson #ifdef MAC_DEBUG 17195fab37eSRobert Watson static unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs, 17295fab37eSRobert Watson nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents, 17395fab37eSRobert Watson nmacipqs, nmacpipes; 17495fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, mbufs, CTLFLAG_RD, 17595fab37eSRobert Watson &nmacmbufs, 0, "number of mbufs in use"); 17695fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, creds, CTLFLAG_RD, 17795fab37eSRobert Watson &nmaccreds, 0, "number of ucreds in use"); 17895fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, ifnets, CTLFLAG_RD, 17995fab37eSRobert Watson &nmacifnets, 0, "number of ifnets in use"); 18095fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, ipqs, CTLFLAG_RD, 18195fab37eSRobert Watson &nmacipqs, 0, "number of ipqs in use"); 18295fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, bpfdescs, CTLFLAG_RD, 18395fab37eSRobert Watson &nmacbpfdescs, 0, "number of bpfdescs in use"); 18495fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, sockets, CTLFLAG_RD, 18595fab37eSRobert Watson &nmacsockets, 0, "number of sockets in use"); 18695fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, pipes, CTLFLAG_RD, 18795fab37eSRobert Watson &nmacpipes, 0, "number of pipes in use"); 18895fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, mounts, CTLFLAG_RD, 18995fab37eSRobert Watson &nmacmounts, 0, "number of mounts in use"); 19095fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, temp, CTLFLAG_RD, 19195fab37eSRobert Watson &nmactemp, 0, "number of temporary labels in use"); 19295fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, vnodes, CTLFLAG_RD, 19395fab37eSRobert Watson &nmacvnodes, 0, "number of vnodes in use"); 19495fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, devfsdirents, CTLFLAG_RD, 19595fab37eSRobert Watson &nmacdevfsdirents, 0, "number of devfs dirents inuse"); 196f050add5SRobert Watson #endif 19795fab37eSRobert Watson 19895fab37eSRobert Watson static int error_select(int error1, int error2); 19995fab37eSRobert Watson static int mac_externalize(struct label *label, struct mac *mac); 20095fab37eSRobert Watson static int mac_policy_register(struct mac_policy_conf *mpc); 20195fab37eSRobert Watson static int mac_policy_unregister(struct mac_policy_conf *mpc); 20295fab37eSRobert Watson 20395fab37eSRobert Watson static int mac_stdcreatevnode_ea(struct vnode *vp); 20495fab37eSRobert Watson static void mac_cred_mmapped_drop_perms(struct thread *td, 20595fab37eSRobert Watson struct ucred *cred); 20695fab37eSRobert Watson static void mac_cred_mmapped_drop_perms_recurse(struct thread *td, 20795fab37eSRobert Watson struct ucred *cred, struct vm_map *map); 20895fab37eSRobert Watson 20995fab37eSRobert Watson MALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 21095fab37eSRobert Watson MALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 21195fab37eSRobert Watson 21295fab37eSRobert Watson /* 21395fab37eSRobert Watson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 21495fab37eSRobert Watson * the linked list of attached policy modules. Read-only consumers of 21595fab37eSRobert Watson * the list must acquire a shared lock for the duration of their use; 21695fab37eSRobert Watson * writers must acquire an exclusive lock. Note that for compound 21795fab37eSRobert Watson * operations, locks should be held for the entire compound operation, 21895fab37eSRobert Watson * and that this is not yet done for relabel requests. 21995fab37eSRobert Watson */ 22095fab37eSRobert Watson static struct mtx mac_policy_list_lock; 22195fab37eSRobert Watson static LIST_HEAD(, mac_policy_conf) mac_policy_list; 22295fab37eSRobert Watson static int mac_policy_list_busy; 22395fab37eSRobert Watson #define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 22495fab37eSRobert Watson "mac_policy_list_lock", NULL, MTX_DEF); 22595fab37eSRobert Watson #define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 22695fab37eSRobert Watson #define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 22795fab37eSRobert Watson 22895fab37eSRobert Watson #define MAC_POLICY_LIST_BUSY() do { \ 22995fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 23095fab37eSRobert Watson mac_policy_list_busy++; \ 23195fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 23295fab37eSRobert Watson } while (0) 23395fab37eSRobert Watson 23495fab37eSRobert Watson #define MAC_POLICY_LIST_UNBUSY() do { \ 23595fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 23695fab37eSRobert Watson mac_policy_list_busy--; \ 23795fab37eSRobert Watson if (mac_policy_list_busy < 0) \ 23895fab37eSRobert Watson panic("Extra mac_policy_list_busy--"); \ 23995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 24095fab37eSRobert Watson } while (0) 24195fab37eSRobert Watson 24295fab37eSRobert Watson /* 24395fab37eSRobert Watson * MAC_CHECK performs the designated check by walking the policy 24495fab37eSRobert Watson * module list and checking with each as to how it feels about the 24595fab37eSRobert Watson * request. Note that it returns its value via 'error' in the scope 24695fab37eSRobert Watson * of the caller. 24795fab37eSRobert Watson */ 24895fab37eSRobert Watson #define MAC_CHECK(check, args...) do { \ 24995fab37eSRobert Watson struct mac_policy_conf *mpc; \ 25095fab37eSRobert Watson \ 25195fab37eSRobert Watson error = 0; \ 25295fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 25395fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 25495fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 25595fab37eSRobert Watson error = error_select( \ 25695fab37eSRobert Watson mpc->mpc_ops->mpo_ ## check (args), \ 25795fab37eSRobert Watson error); \ 25895fab37eSRobert Watson } \ 25995fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 26095fab37eSRobert Watson } while (0) 26195fab37eSRobert Watson 26295fab37eSRobert Watson /* 26395fab37eSRobert Watson * MAC_BOOLEAN performs the designated boolean composition by walking 26495fab37eSRobert Watson * the module list, invoking each instance of the operation, and 26595fab37eSRobert Watson * combining the results using the passed C operator. Note that it 26695fab37eSRobert Watson * returns its value via 'result' in the scope of the caller, which 26795fab37eSRobert Watson * should be initialized by the caller in a meaningful way to get 26895fab37eSRobert Watson * a meaningful result. 26995fab37eSRobert Watson */ 27095fab37eSRobert Watson #define MAC_BOOLEAN(operation, composition, args...) do { \ 27195fab37eSRobert Watson struct mac_policy_conf *mpc; \ 27295fab37eSRobert Watson \ 27395fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 27495fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 27595fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 27695fab37eSRobert Watson result = result composition \ 27795fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 27895fab37eSRobert Watson } \ 27995fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 28095fab37eSRobert Watson } while (0) 28195fab37eSRobert Watson 28295fab37eSRobert Watson /* 28395fab37eSRobert Watson * MAC_PERFORM performs the designated operation by walking the policy 28495fab37eSRobert Watson * module list and invoking that operation for each policy. 28595fab37eSRobert Watson */ 28695fab37eSRobert Watson #define MAC_PERFORM(operation, args...) do { \ 28795fab37eSRobert Watson struct mac_policy_conf *mpc; \ 28895fab37eSRobert Watson \ 28995fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 29095fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 29195fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 29295fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 29395fab37eSRobert Watson } \ 29495fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 29595fab37eSRobert Watson } while (0) 29695fab37eSRobert Watson 29795fab37eSRobert Watson /* 29895fab37eSRobert Watson * Initialize the MAC subsystem, including appropriate SMP locks. 29995fab37eSRobert Watson */ 30095fab37eSRobert Watson static void 30195fab37eSRobert Watson mac_init(void) 30295fab37eSRobert Watson { 30395fab37eSRobert Watson 30495fab37eSRobert Watson LIST_INIT(&mac_policy_list); 30595fab37eSRobert Watson MAC_POLICY_LIST_LOCKINIT(); 30695fab37eSRobert Watson } 30795fab37eSRobert Watson 30895fab37eSRobert Watson /* 30995fab37eSRobert Watson * For the purposes of modules that want to know if they were loaded 31095fab37eSRobert Watson * "early", set the mac_late flag once we've processed modules either 31195fab37eSRobert Watson * linked into the kernel, or loaded before the kernel startup. 31295fab37eSRobert Watson */ 31395fab37eSRobert Watson static void 31495fab37eSRobert Watson mac_late_init(void) 31595fab37eSRobert Watson { 31695fab37eSRobert Watson 31795fab37eSRobert Watson mac_late = 1; 31895fab37eSRobert Watson } 31995fab37eSRobert Watson 32095fab37eSRobert Watson /* 32195fab37eSRobert Watson * Allow MAC policy modules to register during boot, etc. 32295fab37eSRobert Watson */ 32395fab37eSRobert Watson int 32495fab37eSRobert Watson mac_policy_modevent(module_t mod, int type, void *data) 32595fab37eSRobert Watson { 32695fab37eSRobert Watson struct mac_policy_conf *mpc; 32795fab37eSRobert Watson int error; 32895fab37eSRobert Watson 32995fab37eSRobert Watson error = 0; 33095fab37eSRobert Watson mpc = (struct mac_policy_conf *) data; 33195fab37eSRobert Watson 33295fab37eSRobert Watson switch (type) { 33395fab37eSRobert Watson case MOD_LOAD: 33495fab37eSRobert Watson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 33595fab37eSRobert Watson mac_late) { 33695fab37eSRobert Watson printf("mac_policy_modevent: can't load %s policy " 33795fab37eSRobert Watson "after booting\n", mpc->mpc_name); 33895fab37eSRobert Watson error = EBUSY; 33995fab37eSRobert Watson break; 34095fab37eSRobert Watson } 34195fab37eSRobert Watson error = mac_policy_register(mpc); 34295fab37eSRobert Watson break; 34395fab37eSRobert Watson case MOD_UNLOAD: 34495fab37eSRobert Watson /* Don't unregister the module if it was never registered. */ 34595fab37eSRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 34695fab37eSRobert Watson != 0) 34795fab37eSRobert Watson error = mac_policy_unregister(mpc); 34895fab37eSRobert Watson else 34995fab37eSRobert Watson error = 0; 35095fab37eSRobert Watson break; 35195fab37eSRobert Watson default: 35295fab37eSRobert Watson break; 35395fab37eSRobert Watson } 35495fab37eSRobert Watson 35595fab37eSRobert Watson return (error); 35695fab37eSRobert Watson } 35795fab37eSRobert Watson 35895fab37eSRobert Watson static int 35995fab37eSRobert Watson mac_policy_register(struct mac_policy_conf *mpc) 36095fab37eSRobert Watson { 36195fab37eSRobert Watson struct mac_policy_conf *tmpc; 36295fab37eSRobert Watson struct mac_policy_ops *ops; 36395fab37eSRobert Watson struct mac_policy_op_entry *mpe; 36495fab37eSRobert Watson int slot; 36595fab37eSRobert Watson 36695fab37eSRobert Watson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*ops), M_MACOPVEC, 36795fab37eSRobert Watson M_WAITOK | M_ZERO); 36895fab37eSRobert Watson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 36995fab37eSRobert Watson switch (mpe->mpe_constant) { 37095fab37eSRobert Watson case MAC_OP_LAST: 37195fab37eSRobert Watson /* 37295fab37eSRobert Watson * Doesn't actually happen, but this allows checking 37395fab37eSRobert Watson * that all enumerated values are handled. 37495fab37eSRobert Watson */ 37595fab37eSRobert Watson break; 37695fab37eSRobert Watson case MAC_DESTROY: 37795fab37eSRobert Watson mpc->mpc_ops->mpo_destroy = 37895fab37eSRobert Watson mpe->mpe_function; 37995fab37eSRobert Watson break; 38095fab37eSRobert Watson case MAC_INIT: 38195fab37eSRobert Watson mpc->mpc_ops->mpo_init = 38295fab37eSRobert Watson mpe->mpe_function; 38395fab37eSRobert Watson break; 38495fab37eSRobert Watson case MAC_INIT_BPFDESC: 38595fab37eSRobert Watson mpc->mpc_ops->mpo_init_bpfdesc = 38695fab37eSRobert Watson mpe->mpe_function; 38795fab37eSRobert Watson break; 38895fab37eSRobert Watson case MAC_INIT_CRED: 38995fab37eSRobert Watson mpc->mpc_ops->mpo_init_cred = 39095fab37eSRobert Watson mpe->mpe_function; 39195fab37eSRobert Watson break; 39295fab37eSRobert Watson case MAC_INIT_DEVFSDIRENT: 39395fab37eSRobert Watson mpc->mpc_ops->mpo_init_devfsdirent = 39495fab37eSRobert Watson mpe->mpe_function; 39595fab37eSRobert Watson break; 39695fab37eSRobert Watson case MAC_INIT_IFNET: 39795fab37eSRobert Watson mpc->mpc_ops->mpo_init_ifnet = 39895fab37eSRobert Watson mpe->mpe_function; 39995fab37eSRobert Watson break; 40095fab37eSRobert Watson case MAC_INIT_IPQ: 40195fab37eSRobert Watson mpc->mpc_ops->mpo_init_ipq = 40295fab37eSRobert Watson mpe->mpe_function; 40395fab37eSRobert Watson break; 40495fab37eSRobert Watson case MAC_INIT_MBUF: 40595fab37eSRobert Watson mpc->mpc_ops->mpo_init_mbuf = 40695fab37eSRobert Watson mpe->mpe_function; 40795fab37eSRobert Watson break; 40895fab37eSRobert Watson case MAC_INIT_MOUNT: 40995fab37eSRobert Watson mpc->mpc_ops->mpo_init_mount = 41095fab37eSRobert Watson mpe->mpe_function; 41195fab37eSRobert Watson break; 41295fab37eSRobert Watson case MAC_INIT_PIPE: 41395fab37eSRobert Watson mpc->mpc_ops->mpo_init_pipe = 41495fab37eSRobert Watson mpe->mpe_function; 41595fab37eSRobert Watson break; 41695fab37eSRobert Watson case MAC_INIT_SOCKET: 41795fab37eSRobert Watson mpc->mpc_ops->mpo_init_socket = 41895fab37eSRobert Watson mpe->mpe_function; 41995fab37eSRobert Watson break; 42095fab37eSRobert Watson case MAC_INIT_TEMP: 42195fab37eSRobert Watson mpc->mpc_ops->mpo_init_temp = 42295fab37eSRobert Watson mpe->mpe_function; 42395fab37eSRobert Watson break; 42495fab37eSRobert Watson case MAC_INIT_VNODE: 42595fab37eSRobert Watson mpc->mpc_ops->mpo_init_vnode = 42695fab37eSRobert Watson mpe->mpe_function; 42795fab37eSRobert Watson break; 42895fab37eSRobert Watson case MAC_DESTROY_BPFDESC: 42995fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_bpfdesc = 43095fab37eSRobert Watson mpe->mpe_function; 43195fab37eSRobert Watson break; 43295fab37eSRobert Watson case MAC_DESTROY_CRED: 43395fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_cred = 43495fab37eSRobert Watson mpe->mpe_function; 43595fab37eSRobert Watson break; 43695fab37eSRobert Watson case MAC_DESTROY_DEVFSDIRENT: 43795fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_devfsdirent = 43895fab37eSRobert Watson mpe->mpe_function; 43995fab37eSRobert Watson break; 44095fab37eSRobert Watson case MAC_DESTROY_IFNET: 44195fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_ifnet = 44295fab37eSRobert Watson mpe->mpe_function; 44395fab37eSRobert Watson break; 44495fab37eSRobert Watson case MAC_DESTROY_IPQ: 44595fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_ipq = 44695fab37eSRobert Watson mpe->mpe_function; 44795fab37eSRobert Watson break; 44895fab37eSRobert Watson case MAC_DESTROY_MBUF: 44995fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_mbuf = 45095fab37eSRobert Watson mpe->mpe_function; 45195fab37eSRobert Watson break; 45295fab37eSRobert Watson case MAC_DESTROY_MOUNT: 45395fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_mount = 45495fab37eSRobert Watson mpe->mpe_function; 45595fab37eSRobert Watson break; 45695fab37eSRobert Watson case MAC_DESTROY_PIPE: 45795fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_pipe = 45895fab37eSRobert Watson mpe->mpe_function; 45995fab37eSRobert Watson break; 46095fab37eSRobert Watson case MAC_DESTROY_SOCKET: 46195fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_socket = 46295fab37eSRobert Watson mpe->mpe_function; 46395fab37eSRobert Watson break; 46495fab37eSRobert Watson case MAC_DESTROY_TEMP: 46595fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_temp = 46695fab37eSRobert Watson mpe->mpe_function; 46795fab37eSRobert Watson break; 46895fab37eSRobert Watson case MAC_DESTROY_VNODE: 46995fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_vnode = 47095fab37eSRobert Watson mpe->mpe_function; 47195fab37eSRobert Watson break; 47295fab37eSRobert Watson case MAC_EXTERNALIZE: 47395fab37eSRobert Watson mpc->mpc_ops->mpo_externalize = 47495fab37eSRobert Watson mpe->mpe_function; 47595fab37eSRobert Watson break; 47695fab37eSRobert Watson case MAC_INTERNALIZE: 47795fab37eSRobert Watson mpc->mpc_ops->mpo_internalize = 47895fab37eSRobert Watson mpe->mpe_function; 47995fab37eSRobert Watson break; 48095fab37eSRobert Watson case MAC_CREATE_DEVFS_DEVICE: 48195fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_device = 48295fab37eSRobert Watson mpe->mpe_function; 48395fab37eSRobert Watson break; 48495fab37eSRobert Watson case MAC_CREATE_DEVFS_DIRECTORY: 48595fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_directory = 48695fab37eSRobert Watson mpe->mpe_function; 48795fab37eSRobert Watson break; 48895fab37eSRobert Watson case MAC_CREATE_DEVFS_VNODE: 48995fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_vnode = 49095fab37eSRobert Watson mpe->mpe_function; 49195fab37eSRobert Watson break; 49295fab37eSRobert Watson case MAC_STDCREATEVNODE_EA: 49395fab37eSRobert Watson mpc->mpc_ops->mpo_stdcreatevnode_ea = 49495fab37eSRobert Watson mpe->mpe_function; 49595fab37eSRobert Watson break; 49695fab37eSRobert Watson case MAC_CREATE_VNODE: 49795fab37eSRobert Watson mpc->mpc_ops->mpo_create_vnode = 49895fab37eSRobert Watson mpe->mpe_function; 49995fab37eSRobert Watson break; 50095fab37eSRobert Watson case MAC_CREATE_MOUNT: 50195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mount = 50295fab37eSRobert Watson mpe->mpe_function; 50395fab37eSRobert Watson break; 50495fab37eSRobert Watson case MAC_CREATE_ROOT_MOUNT: 50595fab37eSRobert Watson mpc->mpc_ops->mpo_create_root_mount = 50695fab37eSRobert Watson mpe->mpe_function; 50795fab37eSRobert Watson break; 50895fab37eSRobert Watson case MAC_RELABEL_VNODE: 50995fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_vnode = 51095fab37eSRobert Watson mpe->mpe_function; 51195fab37eSRobert Watson break; 51295fab37eSRobert Watson case MAC_UPDATE_DEVFSDIRENT: 51395fab37eSRobert Watson mpc->mpc_ops->mpo_update_devfsdirent = 51495fab37eSRobert Watson mpe->mpe_function; 51595fab37eSRobert Watson break; 51695fab37eSRobert Watson case MAC_UPDATE_PROCFSVNODE: 51795fab37eSRobert Watson mpc->mpc_ops->mpo_update_procfsvnode = 51895fab37eSRobert Watson mpe->mpe_function; 51995fab37eSRobert Watson break; 52095fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTATTR: 52195fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_extattr = 52295fab37eSRobert Watson mpe->mpe_function; 52395fab37eSRobert Watson break; 52495fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 52595fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_externalized = 52695fab37eSRobert Watson mpe->mpe_function; 52795fab37eSRobert Watson break; 52895fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_MOUNT: 52995fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_mount = 53095fab37eSRobert Watson mpe->mpe_function; 53195fab37eSRobert Watson break; 53295fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_SOCKET: 53395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_socket = 53495fab37eSRobert Watson mpe->mpe_function; 53595fab37eSRobert Watson break; 53695fab37eSRobert Watson case MAC_CREATE_PIPE: 53795fab37eSRobert Watson mpc->mpc_ops->mpo_create_pipe = 53895fab37eSRobert Watson mpe->mpe_function; 53995fab37eSRobert Watson break; 54095fab37eSRobert Watson case MAC_CREATE_SOCKET: 54195fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket = 54295fab37eSRobert Watson mpe->mpe_function; 54395fab37eSRobert Watson break; 54495fab37eSRobert Watson case MAC_CREATE_SOCKET_FROM_SOCKET: 54595fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket_from_socket = 54695fab37eSRobert Watson mpe->mpe_function; 54795fab37eSRobert Watson break; 54895fab37eSRobert Watson case MAC_RELABEL_PIPE: 54995fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_pipe = 55095fab37eSRobert Watson mpe->mpe_function; 55195fab37eSRobert Watson break; 55295fab37eSRobert Watson case MAC_RELABEL_SOCKET: 55395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_socket = 55495fab37eSRobert Watson mpe->mpe_function; 55595fab37eSRobert Watson break; 55695fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_MBUF: 55795fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 55895fab37eSRobert Watson mpe->mpe_function; 55995fab37eSRobert Watson break; 56095fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 56195fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 56295fab37eSRobert Watson mpe->mpe_function; 56395fab37eSRobert Watson break; 56495fab37eSRobert Watson case MAC_CREATE_BPFDESC: 56595fab37eSRobert Watson mpc->mpc_ops->mpo_create_bpfdesc = 56695fab37eSRobert Watson mpe->mpe_function; 56795fab37eSRobert Watson break; 56895fab37eSRobert Watson case MAC_CREATE_DATAGRAM_FROM_IPQ: 56995fab37eSRobert Watson mpc->mpc_ops->mpo_create_datagram_from_ipq = 57095fab37eSRobert Watson mpe->mpe_function; 57195fab37eSRobert Watson break; 57295fab37eSRobert Watson case MAC_CREATE_FRAGMENT: 57395fab37eSRobert Watson mpc->mpc_ops->mpo_create_fragment = 57495fab37eSRobert Watson mpe->mpe_function; 57595fab37eSRobert Watson break; 57695fab37eSRobert Watson case MAC_CREATE_IFNET: 57795fab37eSRobert Watson mpc->mpc_ops->mpo_create_ifnet = 57895fab37eSRobert Watson mpe->mpe_function; 57995fab37eSRobert Watson break; 58095fab37eSRobert Watson case MAC_CREATE_IPQ: 58195fab37eSRobert Watson mpc->mpc_ops->mpo_create_ipq = 58295fab37eSRobert Watson mpe->mpe_function; 58395fab37eSRobert Watson break; 58495fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_MBUF: 58595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 58695fab37eSRobert Watson mpe->mpe_function; 58795fab37eSRobert Watson break; 58895fab37eSRobert Watson case MAC_CREATE_MBUF_LINKLAYER: 58995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_linklayer = 59095fab37eSRobert Watson mpe->mpe_function; 59195fab37eSRobert Watson break; 59295fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_BPFDESC: 59395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 59495fab37eSRobert Watson mpe->mpe_function; 59595fab37eSRobert Watson break; 59695fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_IFNET: 59795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 59895fab37eSRobert Watson mpe->mpe_function; 59995fab37eSRobert Watson break; 60095fab37eSRobert Watson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 60195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 60295fab37eSRobert Watson mpe->mpe_function; 60395fab37eSRobert Watson break; 60495fab37eSRobert Watson case MAC_CREATE_MBUF_NETLAYER: 60595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_netlayer = 60695fab37eSRobert Watson mpe->mpe_function; 60795fab37eSRobert Watson break; 60895fab37eSRobert Watson case MAC_FRAGMENT_MATCH: 60995fab37eSRobert Watson mpc->mpc_ops->mpo_fragment_match = 61095fab37eSRobert Watson mpe->mpe_function; 61195fab37eSRobert Watson break; 61295fab37eSRobert Watson case MAC_RELABEL_IFNET: 61395fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_ifnet = 61495fab37eSRobert Watson mpe->mpe_function; 61595fab37eSRobert Watson break; 61695fab37eSRobert Watson case MAC_UPDATE_IPQ: 61795fab37eSRobert Watson mpc->mpc_ops->mpo_update_ipq = 61895fab37eSRobert Watson mpe->mpe_function; 61995fab37eSRobert Watson break; 62095fab37eSRobert Watson case MAC_CREATE_CRED: 62195fab37eSRobert Watson mpc->mpc_ops->mpo_create_cred = 62295fab37eSRobert Watson mpe->mpe_function; 62395fab37eSRobert Watson break; 62495fab37eSRobert Watson case MAC_EXECVE_TRANSITION: 62595fab37eSRobert Watson mpc->mpc_ops->mpo_execve_transition = 62695fab37eSRobert Watson mpe->mpe_function; 62795fab37eSRobert Watson break; 62895fab37eSRobert Watson case MAC_EXECVE_WILL_TRANSITION: 62995fab37eSRobert Watson mpc->mpc_ops->mpo_execve_will_transition = 63095fab37eSRobert Watson mpe->mpe_function; 63195fab37eSRobert Watson break; 63295fab37eSRobert Watson case MAC_CREATE_PROC0: 63395fab37eSRobert Watson mpc->mpc_ops->mpo_create_proc0 = mpe->mpe_function; 63495fab37eSRobert Watson break; 63595fab37eSRobert Watson case MAC_CREATE_PROC1: 63695fab37eSRobert Watson mpc->mpc_ops->mpo_create_proc1 = mpe->mpe_function; 63795fab37eSRobert Watson break; 63895fab37eSRobert Watson case MAC_RELABEL_CRED: 63995fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_cred = 64095fab37eSRobert Watson mpe->mpe_function; 64195fab37eSRobert Watson break; 64295fab37eSRobert Watson case MAC_CHECK_BPFDESC_RECEIVE: 64395fab37eSRobert Watson mpc->mpc_ops->mpo_check_bpfdesc_receive = 64495fab37eSRobert Watson mpe->mpe_function; 64595fab37eSRobert Watson break; 64695fab37eSRobert Watson case MAC_CHECK_CRED_RELABEL: 64795fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_relabel = 64895fab37eSRobert Watson mpe->mpe_function; 64995fab37eSRobert Watson break; 65095fab37eSRobert Watson case MAC_CHECK_CRED_VISIBLE: 65195fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_visible = 65295fab37eSRobert Watson mpe->mpe_function; 65395fab37eSRobert Watson break; 65495fab37eSRobert Watson case MAC_CHECK_IFNET_RELABEL: 65595fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_relabel = 65695fab37eSRobert Watson mpe->mpe_function; 65795fab37eSRobert Watson break; 65895fab37eSRobert Watson case MAC_CHECK_IFNET_TRANSMIT: 65995fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_transmit = 66095fab37eSRobert Watson mpe->mpe_function; 66195fab37eSRobert Watson break; 66295fab37eSRobert Watson case MAC_CHECK_MOUNT_STAT: 66395fab37eSRobert Watson mpc->mpc_ops->mpo_check_mount_stat = 66495fab37eSRobert Watson mpe->mpe_function; 66595fab37eSRobert Watson break; 66695fab37eSRobert Watson case MAC_CHECK_PIPE_IOCTL: 66795fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_ioctl = 66895fab37eSRobert Watson mpe->mpe_function; 66995fab37eSRobert Watson break; 67095fab37eSRobert Watson case MAC_CHECK_PIPE_OP: 67195fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_op = 67295fab37eSRobert Watson mpe->mpe_function; 67395fab37eSRobert Watson break; 67495fab37eSRobert Watson case MAC_CHECK_PIPE_RELABEL: 67595fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_relabel = 67695fab37eSRobert Watson mpe->mpe_function; 67795fab37eSRobert Watson break; 67895fab37eSRobert Watson case MAC_CHECK_PROC_DEBUG: 67995fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_debug = 68095fab37eSRobert Watson mpe->mpe_function; 68195fab37eSRobert Watson break; 68295fab37eSRobert Watson case MAC_CHECK_PROC_SCHED: 68395fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_sched = 68495fab37eSRobert Watson mpe->mpe_function; 68595fab37eSRobert Watson break; 68695fab37eSRobert Watson case MAC_CHECK_PROC_SIGNAL: 68795fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_signal = 68895fab37eSRobert Watson mpe->mpe_function; 68995fab37eSRobert Watson break; 69095fab37eSRobert Watson case MAC_CHECK_SOCKET_BIND: 69195fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_bind = 69295fab37eSRobert Watson mpe->mpe_function; 69395fab37eSRobert Watson break; 69495fab37eSRobert Watson case MAC_CHECK_SOCKET_CONNECT: 69595fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_connect = 69695fab37eSRobert Watson mpe->mpe_function; 69795fab37eSRobert Watson break; 698d61198e4SRobert Watson case MAC_CHECK_SOCKET_DELIVER: 699d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_deliver = 70095fab37eSRobert Watson mpe->mpe_function; 70195fab37eSRobert Watson break; 702d61198e4SRobert Watson case MAC_CHECK_SOCKET_LISTEN: 703d61198e4SRobert Watson mpc->mpc_ops->mpo_check_socket_listen = 70495fab37eSRobert Watson mpe->mpe_function; 70595fab37eSRobert Watson break; 70695fab37eSRobert Watson case MAC_CHECK_SOCKET_RELABEL: 70795fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_relabel = 70895fab37eSRobert Watson mpe->mpe_function; 70995fab37eSRobert Watson break; 71095fab37eSRobert Watson case MAC_CHECK_SOCKET_VISIBLE: 71195fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_visible = 71295fab37eSRobert Watson mpe->mpe_function; 71395fab37eSRobert Watson break; 71495fab37eSRobert Watson case MAC_CHECK_VNODE_ACCESS: 71595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_access = 71695fab37eSRobert Watson mpe->mpe_function; 71795fab37eSRobert Watson break; 71895fab37eSRobert Watson case MAC_CHECK_VNODE_CHDIR: 71995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chdir = 72095fab37eSRobert Watson mpe->mpe_function; 72195fab37eSRobert Watson break; 72295fab37eSRobert Watson case MAC_CHECK_VNODE_CHROOT: 72395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chroot = 72495fab37eSRobert Watson mpe->mpe_function; 72595fab37eSRobert Watson break; 72695fab37eSRobert Watson case MAC_CHECK_VNODE_CREATE: 72795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_create = 72895fab37eSRobert Watson mpe->mpe_function; 72995fab37eSRobert Watson break; 73095fab37eSRobert Watson case MAC_CHECK_VNODE_DELETE: 73195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_delete = 73295fab37eSRobert Watson mpe->mpe_function; 73395fab37eSRobert Watson break; 73495fab37eSRobert Watson case MAC_CHECK_VNODE_DELETEACL: 73595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_deleteacl = 73695fab37eSRobert Watson mpe->mpe_function; 73795fab37eSRobert Watson break; 73895fab37eSRobert Watson case MAC_CHECK_VNODE_EXEC: 73995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_exec = 74095fab37eSRobert Watson mpe->mpe_function; 74195fab37eSRobert Watson break; 74295fab37eSRobert Watson case MAC_CHECK_VNODE_GETACL: 74395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getacl = 74495fab37eSRobert Watson mpe->mpe_function; 74595fab37eSRobert Watson break; 74695fab37eSRobert Watson case MAC_CHECK_VNODE_GETEXTATTR: 74795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getextattr = 74895fab37eSRobert Watson mpe->mpe_function; 74995fab37eSRobert Watson break; 75095fab37eSRobert Watson case MAC_CHECK_VNODE_LOOKUP: 75195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_lookup = 75295fab37eSRobert Watson mpe->mpe_function; 75395fab37eSRobert Watson break; 75495fab37eSRobert Watson case MAC_CHECK_VNODE_MMAP_PERMS: 75595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 75695fab37eSRobert Watson mpe->mpe_function; 75795fab37eSRobert Watson break; 75895fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 75995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 76095fab37eSRobert Watson mpe->mpe_function; 76195fab37eSRobert Watson break; 7627f724f8bSRobert Watson case MAC_CHECK_VNODE_POLL: 7637f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_poll = 7647f724f8bSRobert Watson mpe->mpe_function; 7657f724f8bSRobert Watson break; 7667f724f8bSRobert Watson case MAC_CHECK_VNODE_READ: 7677f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_read = 7687f724f8bSRobert Watson mpe->mpe_function; 7697f724f8bSRobert Watson break; 77095fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 77195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 77295fab37eSRobert Watson mpe->mpe_function; 77395fab37eSRobert Watson break; 77495fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 77595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 77695fab37eSRobert Watson mpe->mpe_function; 77795fab37eSRobert Watson break; 77895fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 77995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 78095fab37eSRobert Watson mpe->mpe_function; 78195fab37eSRobert Watson break; 78295fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 78395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 78495fab37eSRobert Watson mpe->mpe_function; 78595fab37eSRobert Watson break; 78695fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 78795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 78895fab37eSRobert Watson mpe->mpe_function; 78995fab37eSRobert Watson break; 79095fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 79195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 79295fab37eSRobert Watson mpe->mpe_function; 79395fab37eSRobert Watson break; 79495fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 79595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 79695fab37eSRobert Watson mpe->mpe_function; 79795fab37eSRobert Watson break; 79895fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 79995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 80095fab37eSRobert Watson mpe->mpe_function; 80195fab37eSRobert Watson break; 80295fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 80395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 80495fab37eSRobert Watson mpe->mpe_function; 80595fab37eSRobert Watson break; 80695fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 80795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 80895fab37eSRobert Watson mpe->mpe_function; 80995fab37eSRobert Watson break; 81095fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 81195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 81295fab37eSRobert Watson mpe->mpe_function; 81395fab37eSRobert Watson break; 81495fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 81595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 81695fab37eSRobert Watson mpe->mpe_function; 81795fab37eSRobert Watson break; 81895fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 81995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 82095fab37eSRobert Watson mpe->mpe_function; 82195fab37eSRobert Watson break; 8227f724f8bSRobert Watson case MAC_CHECK_VNODE_WRITE: 8237f724f8bSRobert Watson mpc->mpc_ops->mpo_check_vnode_write = 8247f724f8bSRobert Watson mpe->mpe_function; 8257f724f8bSRobert Watson break; 82695fab37eSRobert Watson /* 82795fab37eSRobert Watson default: 82895fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 82995fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 83095fab37eSRobert Watson return (EINVAL); 83195fab37eSRobert Watson */ 83295fab37eSRobert Watson } 83395fab37eSRobert Watson } 83495fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 83595fab37eSRobert Watson if (mac_policy_list_busy > 0) { 83695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 83795fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 83895fab37eSRobert Watson mpc->mpc_ops = NULL; 83995fab37eSRobert Watson return (EBUSY); 84095fab37eSRobert Watson } 84195fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 84295fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 84395fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 84495fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 84595fab37eSRobert Watson mpc->mpc_ops = NULL; 84695fab37eSRobert Watson return (EEXIST); 84795fab37eSRobert Watson } 84895fab37eSRobert Watson } 84995fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 85095fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 85195fab37eSRobert Watson if (slot == 0) { 85295fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 85395fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 85495fab37eSRobert Watson mpc->mpc_ops = NULL; 85595fab37eSRobert Watson return (ENOMEM); 85695fab37eSRobert Watson } 85795fab37eSRobert Watson slot--; 85895fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 85995fab37eSRobert Watson *mpc->mpc_field_off = slot; 86095fab37eSRobert Watson } 86195fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 86295fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 86395fab37eSRobert Watson 86495fab37eSRobert Watson /* Per-policy initialization. */ 86595fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 86695fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 86795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 86895fab37eSRobert Watson 86995fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 87095fab37eSRobert Watson mpc->mpc_name); 87195fab37eSRobert Watson 87295fab37eSRobert Watson return (0); 87395fab37eSRobert Watson } 87495fab37eSRobert Watson 87595fab37eSRobert Watson static int 87695fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 87795fab37eSRobert Watson { 87895fab37eSRobert Watson 87995fab37eSRobert Watson #if 0 88095fab37eSRobert Watson /* 88195fab37eSRobert Watson * Don't allow unloading modules with private data. 88295fab37eSRobert Watson */ 88395fab37eSRobert Watson if (mpc->mpc_field_off != NULL) 88495fab37eSRobert Watson return (EBUSY); 88595fab37eSRobert Watson #endif 88695fab37eSRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) 88795fab37eSRobert Watson return (EBUSY); 88895fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 88995fab37eSRobert Watson if (mac_policy_list_busy > 0) { 89095fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89195fab37eSRobert Watson return (EBUSY); 89295fab37eSRobert Watson } 89395fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 89495fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 89595fab37eSRobert Watson 89695fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 89795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89895fab37eSRobert Watson 89995fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 90095fab37eSRobert Watson mpc->mpc_ops = NULL; 90195fab37eSRobert Watson 90295fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 90395fab37eSRobert Watson mpc->mpc_name); 90495fab37eSRobert Watson 90595fab37eSRobert Watson return (0); 90695fab37eSRobert Watson } 90795fab37eSRobert Watson 90895fab37eSRobert Watson /* 90995fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 91095fab37eSRobert Watson * value with the higher precedence. 91195fab37eSRobert Watson */ 91295fab37eSRobert Watson static int 91395fab37eSRobert Watson error_select(int error1, int error2) 91495fab37eSRobert Watson { 91595fab37eSRobert Watson 91695fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 91795fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 91895fab37eSRobert Watson return (EDEADLK); 91995fab37eSRobert Watson 92095fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 92195fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 92295fab37eSRobert Watson return (EINVAL); 92395fab37eSRobert Watson 92495fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 92595fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 92695fab37eSRobert Watson return (ESRCH); 92795fab37eSRobert Watson 92895fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 92995fab37eSRobert Watson return (ENOENT); 93095fab37eSRobert Watson 93195fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 93295fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 93395fab37eSRobert Watson return (EACCES); 93495fab37eSRobert Watson 93595fab37eSRobert Watson /* Precedence goes to privilege. */ 93695fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 93795fab37eSRobert Watson return (EPERM); 93895fab37eSRobert Watson 93995fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 94095fab37eSRobert Watson if (error1 != 0) 94195fab37eSRobert Watson return (error1); 94295fab37eSRobert Watson return (error2); 94395fab37eSRobert Watson } 94495fab37eSRobert Watson 94595fab37eSRobert Watson void 94695fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 94795fab37eSRobert Watson { 94895fab37eSRobert Watson 94995fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 95095fab37eSRobert Watson } 95195fab37eSRobert Watson 95295fab37eSRobert Watson void 95395fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 95495fab37eSRobert Watson { 95595fab37eSRobert Watson 95695fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 95795fab37eSRobert Watson } 95895fab37eSRobert Watson 95995fab37eSRobert Watson /* 96095fab37eSRobert Watson * Support callout for policies that manage their own externalization 96195fab37eSRobert Watson * using extended attributes. 96295fab37eSRobert Watson */ 96395fab37eSRobert Watson static int 96495fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 96595fab37eSRobert Watson { 96695fab37eSRobert Watson int error; 96795fab37eSRobert Watson 96895fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 96995fab37eSRobert Watson &mp->mnt_fslabel); 97095fab37eSRobert Watson 97195fab37eSRobert Watson return (error); 97295fab37eSRobert Watson } 97395fab37eSRobert Watson 97495fab37eSRobert Watson /* 97595fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 97695fab37eSRobert Watson * vnode. 97795fab37eSRobert Watson */ 97895fab37eSRobert Watson static int 97995fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 98095fab37eSRobert Watson { 98195fab37eSRobert Watson int error; 98295fab37eSRobert Watson 98395fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 98495fab37eSRobert Watson 98595fab37eSRobert Watson return (error); 98695fab37eSRobert Watson } 98795fab37eSRobert Watson 98895fab37eSRobert Watson /* 98995fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 99095fab37eSRobert Watson * the mountpoint. 99195fab37eSRobert Watson */ 99295fab37eSRobert Watson void 99395fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 99495fab37eSRobert Watson { 99595fab37eSRobert Watson 99695fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 99795fab37eSRobert Watson &mp->mnt_fslabel); 99895fab37eSRobert Watson 999e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 100095fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 1001e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 100295fab37eSRobert Watson } 100395fab37eSRobert Watson 100495fab37eSRobert Watson /* 100595fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 100695fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 100795fab37eSRobert Watson * extended attributes. 100895fab37eSRobert Watson */ 100995fab37eSRobert Watson int 101095fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 101195fab37eSRobert Watson { 101295fab37eSRobert Watson struct vnode *vp = ap->a_vp; 101395fab37eSRobert Watson struct mac extmac; 101495fab37eSRobert Watson int buflen, error; 101595fab37eSRobert Watson 101695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 101795fab37eSRobert Watson 101895fab37eSRobert Watson /* 101995fab37eSRobert Watson * Call out to external policies first. Order doesn't really 102095fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 102195fab37eSRobert Watson */ 102295fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 102395fab37eSRobert Watson if (error) 102495fab37eSRobert Watson return (error); 102595fab37eSRobert Watson 102695fab37eSRobert Watson buflen = sizeof(extmac); 102795fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 102895fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 102995fab37eSRobert Watson (char *)&extmac, curthread); 103095fab37eSRobert Watson switch (error) { 103195fab37eSRobert Watson case 0: 103295fab37eSRobert Watson /* Got it */ 103395fab37eSRobert Watson break; 103495fab37eSRobert Watson 103595fab37eSRobert Watson case ENOATTR: 103695fab37eSRobert Watson /* 103795fab37eSRobert Watson * Use the label from the mount point. 103895fab37eSRobert Watson */ 103995fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 104095fab37eSRobert Watson return (0); 104195fab37eSRobert Watson 104295fab37eSRobert Watson case EOPNOTSUPP: 104395fab37eSRobert Watson default: 104495fab37eSRobert Watson /* Fail horribly. */ 104595fab37eSRobert Watson return (error); 104695fab37eSRobert Watson } 104795fab37eSRobert Watson 104895fab37eSRobert Watson if (buflen != sizeof(extmac)) 104995fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 105095fab37eSRobert Watson if (error == 0) 105195fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 105295fab37eSRobert Watson if (error == 0) 1053e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 105495fab37eSRobert Watson else { 105595fab37eSRobert Watson struct vattr va; 105695fab37eSRobert Watson 105795fab37eSRobert Watson printf("Corrupted label on %s", 105895fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 105995fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 106095fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 106195fab37eSRobert Watson if (mac_debug_label_fallback) { 106295fab37eSRobert Watson printf(", falling back.\n"); 106395fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 106495fab37eSRobert Watson error = 0; 106595fab37eSRobert Watson } else { 106695fab37eSRobert Watson printf(".\n"); 106795fab37eSRobert Watson error = EPERM; 106895fab37eSRobert Watson } 106995fab37eSRobert Watson } 107095fab37eSRobert Watson 107195fab37eSRobert Watson return (error); 107295fab37eSRobert Watson } 107395fab37eSRobert Watson 107495fab37eSRobert Watson /* 107595fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 107695fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 107795fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 107895fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 107995fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 108095fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 108195fab37eSRobert Watson * all vnodes. 108295fab37eSRobert Watson */ 108395fab37eSRobert Watson static int 108495fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 108595fab37eSRobert Watson { 108695fab37eSRobert Watson int error; 108795fab37eSRobert Watson 108895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 108995fab37eSRobert Watson 109095fab37eSRobert Watson if (vp->v_mount == NULL) { 109195fab37eSRobert Watson /* 109295fab37eSRobert Watson Eventually, we probably want to special-case refreshing 109395fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 109495fab37eSRobert Watson that case might be handled here. 109595fab37eSRobert Watson 109695fab37eSRobert Watson mac_update_vnode_deadfs(vp); 109795fab37eSRobert Watson return (0); 109895fab37eSRobert Watson */ 109995fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 110095fab37eSRobert Watson if (vp->v_tag != VT_NON) 110195fab37eSRobert Watson printf( 110295fab37eSRobert Watson "vn_refreshlabel: null v_mount with non-VT_NON\n"); 110395fab37eSRobert Watson return (EBADF); 110495fab37eSRobert Watson } 110595fab37eSRobert Watson 1106e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 110795fab37eSRobert Watson mac_vnode_label_cache_hits++; 110895fab37eSRobert Watson return (0); 110995fab37eSRobert Watson } else 111095fab37eSRobert Watson mac_vnode_label_cache_misses++; 111195fab37eSRobert Watson 111295fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 111395fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 111495fab37eSRobert Watson return (0); 111595fab37eSRobert Watson } 111695fab37eSRobert Watson 111795fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 111895fab37eSRobert Watson switch (error) { 111995fab37eSRobert Watson case EOPNOTSUPP: 112095fab37eSRobert Watson /* 112195fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 112295fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 112395fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 112495fab37eSRobert Watson * about doing this. 112595fab37eSRobert Watson */ 112695fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 112795fab37eSRobert Watson error = 0; 112895fab37eSRobert Watson default: 112995fab37eSRobert Watson return (error); 113095fab37eSRobert Watson } 113195fab37eSRobert Watson } 113295fab37eSRobert Watson 113395fab37eSRobert Watson /* 113495fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 113595fab37eSRobert Watson * function must be called after EA service is available for the vnode, 113695fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 113795fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 113895fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 113995fab37eSRobert Watson */ 114095fab37eSRobert Watson int 114195fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 114295fab37eSRobert Watson { 114395fab37eSRobert Watson struct mac extmac; 114495fab37eSRobert Watson int error; 114595fab37eSRobert Watson 1146e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 114795fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 114895fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 114995fab37eSRobert Watson } else { 115095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 115195fab37eSRobert Watson if (error) 115295fab37eSRobert Watson return (error); 115395fab37eSRobert Watson 115495fab37eSRobert Watson /* 115595fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 115695fab37eSRobert Watson * disk. If we fail, return a failure to abort the 115795fab37eSRobert Watson * create operation. Really, this failure shouldn't 115895fab37eSRobert Watson * happen except in fairly unusual circumstances (out 115995fab37eSRobert Watson * of disk, etc). 116095fab37eSRobert Watson */ 116195fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 116295fab37eSRobert Watson 116395fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 116495fab37eSRobert Watson if (error) 116595fab37eSRobert Watson return (error); 116695fab37eSRobert Watson 116795fab37eSRobert Watson /* 116895fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 116995fab37eSRobert Watson * directly manage their extended attributes. 117095fab37eSRobert Watson */ 117195fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 117295fab37eSRobert Watson if (error) 117395fab37eSRobert Watson return (error); 117495fab37eSRobert Watson 117595fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 117695fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 117795fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 117895fab37eSRobert Watson if (error == 0) 1179e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 118095fab37eSRobert Watson else { 118195fab37eSRobert Watson #if 0 118295fab37eSRobert Watson /* 118395fab37eSRobert Watson * In theory, we could have fall-back behavior here. 118495fab37eSRobert Watson * It would probably be incorrect. 118595fab37eSRobert Watson */ 118695fab37eSRobert Watson #endif 118795fab37eSRobert Watson return (error); 118895fab37eSRobert Watson } 118995fab37eSRobert Watson } 119095fab37eSRobert Watson 119195fab37eSRobert Watson return (0); 119295fab37eSRobert Watson } 119395fab37eSRobert Watson 119495fab37eSRobert Watson void 119595fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 119695fab37eSRobert Watson { 119795fab37eSRobert Watson int error; 119895fab37eSRobert Watson 119995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 120095fab37eSRobert Watson 120195fab37eSRobert Watson error = vn_refreshlabel(vp, old); 120295fab37eSRobert Watson if (error) { 120395fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 120495fab37eSRobert Watson error); 120595fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 120695fab37eSRobert Watson } 120795fab37eSRobert Watson 120895fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 120995fab37eSRobert Watson } 121095fab37eSRobert Watson 121195fab37eSRobert Watson int 121295fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 121395fab37eSRobert Watson { 121495fab37eSRobert Watson int error, result; 121595fab37eSRobert Watson 121695fab37eSRobert Watson error = vn_refreshlabel(vp, old); 121795fab37eSRobert Watson if (error) 121895fab37eSRobert Watson return (error); 121995fab37eSRobert Watson 122095fab37eSRobert Watson result = 0; 122195fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 122295fab37eSRobert Watson 122395fab37eSRobert Watson return (result); 122495fab37eSRobert Watson } 122595fab37eSRobert Watson 122695fab37eSRobert Watson static void 122795fab37eSRobert Watson mac_init_label(struct label *label) 122895fab37eSRobert Watson { 122995fab37eSRobert Watson 123095fab37eSRobert Watson bzero(label, sizeof(*label)); 123195fab37eSRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 123295fab37eSRobert Watson } 123395fab37eSRobert Watson 123495fab37eSRobert Watson static void 123595fab37eSRobert Watson mac_init_structmac(struct mac *mac) 123695fab37eSRobert Watson { 123795fab37eSRobert Watson 123895fab37eSRobert Watson bzero(mac, sizeof(*mac)); 123995fab37eSRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 124095fab37eSRobert Watson } 124195fab37eSRobert Watson 124295fab37eSRobert Watson static void 124395fab37eSRobert Watson mac_destroy_label(struct label *label) 124495fab37eSRobert Watson { 124595fab37eSRobert Watson 124695fab37eSRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 124795fab37eSRobert Watson ("destroying uninitialized label")); 124895fab37eSRobert Watson 124995fab37eSRobert Watson bzero(label, sizeof(*label)); 125095fab37eSRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 125195fab37eSRobert Watson } 125295fab37eSRobert Watson 125395fab37eSRobert Watson int 125495fab37eSRobert Watson mac_init_mbuf(struct mbuf *m, int how) 125595fab37eSRobert Watson { 125695fab37eSRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 125795fab37eSRobert Watson 125895fab37eSRobert Watson /* "how" is one of M_(TRY|DONT)WAIT */ 125995fab37eSRobert Watson mac_init_label(&m->m_pkthdr.label); 126095fab37eSRobert Watson MAC_PERFORM(init_mbuf, m, how, &m->m_pkthdr.label); 1261f050add5SRobert Watson #ifdef MAC_DEBUG 126295fab37eSRobert Watson atomic_add_int(&nmacmbufs, 1); 1263f050add5SRobert Watson #endif 126495fab37eSRobert Watson return (0); 126595fab37eSRobert Watson } 126695fab37eSRobert Watson 126795fab37eSRobert Watson void 126895fab37eSRobert Watson mac_destroy_mbuf(struct mbuf *m) 126995fab37eSRobert Watson { 127095fab37eSRobert Watson 127195fab37eSRobert Watson MAC_PERFORM(destroy_mbuf, m, &m->m_pkthdr.label); 127295fab37eSRobert Watson mac_destroy_label(&m->m_pkthdr.label); 1273f050add5SRobert Watson #ifdef MAC_DEBUG 127495fab37eSRobert Watson atomic_subtract_int(&nmacmbufs, 1); 1275f050add5SRobert Watson #endif 127695fab37eSRobert Watson } 127795fab37eSRobert Watson 127895fab37eSRobert Watson void 127995fab37eSRobert Watson mac_init_cred(struct ucred *cr) 128095fab37eSRobert Watson { 128195fab37eSRobert Watson 128295fab37eSRobert Watson mac_init_label(&cr->cr_label); 128395fab37eSRobert Watson MAC_PERFORM(init_cred, cr, &cr->cr_label); 1284f050add5SRobert Watson #ifdef MAC_DEBUG 128595fab37eSRobert Watson atomic_add_int(&nmaccreds, 1); 1286f050add5SRobert Watson #endif 128795fab37eSRobert Watson } 128895fab37eSRobert Watson 128995fab37eSRobert Watson void 129095fab37eSRobert Watson mac_destroy_cred(struct ucred *cr) 129195fab37eSRobert Watson { 129295fab37eSRobert Watson 129395fab37eSRobert Watson MAC_PERFORM(destroy_cred, cr, &cr->cr_label); 129495fab37eSRobert Watson mac_destroy_label(&cr->cr_label); 1295f050add5SRobert Watson #ifdef MAC_DEBUG 129695fab37eSRobert Watson atomic_subtract_int(&nmaccreds, 1); 1297f050add5SRobert Watson #endif 129895fab37eSRobert Watson } 129995fab37eSRobert Watson 130095fab37eSRobert Watson void 130195fab37eSRobert Watson mac_init_ifnet(struct ifnet *ifp) 130295fab37eSRobert Watson { 130395fab37eSRobert Watson 130495fab37eSRobert Watson mac_init_label(&ifp->if_label); 130595fab37eSRobert Watson MAC_PERFORM(init_ifnet, ifp, &ifp->if_label); 1306f050add5SRobert Watson #ifdef MAC_DEBUG 130795fab37eSRobert Watson atomic_add_int(&nmacifnets, 1); 1308f050add5SRobert Watson #endif 130995fab37eSRobert Watson } 131095fab37eSRobert Watson 131195fab37eSRobert Watson void 131295fab37eSRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 131395fab37eSRobert Watson { 131495fab37eSRobert Watson 131595fab37eSRobert Watson MAC_PERFORM(destroy_ifnet, ifp, &ifp->if_label); 131695fab37eSRobert Watson mac_destroy_label(&ifp->if_label); 1317f050add5SRobert Watson #ifdef MAC_DEBUG 131895fab37eSRobert Watson atomic_subtract_int(&nmacifnets, 1); 1319f050add5SRobert Watson #endif 132095fab37eSRobert Watson } 132195fab37eSRobert Watson 132295fab37eSRobert Watson void 132395fab37eSRobert Watson mac_init_ipq(struct ipq *ipq) 132495fab37eSRobert Watson { 132595fab37eSRobert Watson 132695fab37eSRobert Watson mac_init_label(&ipq->ipq_label); 132795fab37eSRobert Watson MAC_PERFORM(init_ipq, ipq, &ipq->ipq_label); 1328f050add5SRobert Watson #ifdef MAC_DEBUG 132995fab37eSRobert Watson atomic_add_int(&nmacipqs, 1); 1330f050add5SRobert Watson #endif 133195fab37eSRobert Watson } 133295fab37eSRobert Watson 133395fab37eSRobert Watson void 133495fab37eSRobert Watson mac_destroy_ipq(struct ipq *ipq) 133595fab37eSRobert Watson { 133695fab37eSRobert Watson 133795fab37eSRobert Watson MAC_PERFORM(destroy_ipq, ipq, &ipq->ipq_label); 133895fab37eSRobert Watson mac_destroy_label(&ipq->ipq_label); 1339f050add5SRobert Watson #ifdef MAC_DEBUG 134095fab37eSRobert Watson atomic_subtract_int(&nmacipqs, 1); 1341f050add5SRobert Watson #endif 134295fab37eSRobert Watson } 134395fab37eSRobert Watson 134495fab37eSRobert Watson void 134595fab37eSRobert Watson mac_init_socket(struct socket *socket) 134695fab37eSRobert Watson { 134795fab37eSRobert Watson 134895fab37eSRobert Watson mac_init_label(&socket->so_label); 134995fab37eSRobert Watson mac_init_label(&socket->so_peerlabel); 135095fab37eSRobert Watson MAC_PERFORM(init_socket, socket, &socket->so_label, 135195fab37eSRobert Watson &socket->so_peerlabel); 1352f050add5SRobert Watson #ifdef MAC_DEBUG 135395fab37eSRobert Watson atomic_add_int(&nmacsockets, 1); 1354f050add5SRobert Watson #endif 135595fab37eSRobert Watson } 135695fab37eSRobert Watson 135795fab37eSRobert Watson void 135895fab37eSRobert Watson mac_destroy_socket(struct socket *socket) 135995fab37eSRobert Watson { 136095fab37eSRobert Watson 136195fab37eSRobert Watson MAC_PERFORM(destroy_socket, socket, &socket->so_label, 136295fab37eSRobert Watson &socket->so_peerlabel); 136395fab37eSRobert Watson mac_destroy_label(&socket->so_label); 136495fab37eSRobert Watson mac_destroy_label(&socket->so_peerlabel); 1365f050add5SRobert Watson #ifdef MAC_DEBUG 136695fab37eSRobert Watson atomic_subtract_int(&nmacsockets, 1); 1367f050add5SRobert Watson #endif 136895fab37eSRobert Watson } 136995fab37eSRobert Watson 137095fab37eSRobert Watson void 137195fab37eSRobert Watson mac_init_pipe(struct pipe *pipe) 137295fab37eSRobert Watson { 137395fab37eSRobert Watson struct label *label; 137495fab37eSRobert Watson 137595fab37eSRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 137695fab37eSRobert Watson mac_init_label(label); 137795fab37eSRobert Watson pipe->pipe_label = label; 137895fab37eSRobert Watson pipe->pipe_peer->pipe_label = label; 137995fab37eSRobert Watson MAC_PERFORM(init_pipe, pipe, pipe->pipe_label); 1380f050add5SRobert Watson #ifdef MAC_DEBUG 138195fab37eSRobert Watson atomic_add_int(&nmacpipes, 1); 1382f050add5SRobert Watson #endif 138395fab37eSRobert Watson } 138495fab37eSRobert Watson 138595fab37eSRobert Watson void 138695fab37eSRobert Watson mac_destroy_pipe(struct pipe *pipe) 138795fab37eSRobert Watson { 138895fab37eSRobert Watson 138995fab37eSRobert Watson MAC_PERFORM(destroy_pipe, pipe, pipe->pipe_label); 139095fab37eSRobert Watson mac_destroy_label(pipe->pipe_label); 139195fab37eSRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 1392f050add5SRobert Watson #ifdef MAC_DEBUG 139395fab37eSRobert Watson atomic_subtract_int(&nmacpipes, 1); 1394f050add5SRobert Watson #endif 139595fab37eSRobert Watson } 139695fab37eSRobert Watson 139795fab37eSRobert Watson void 139895fab37eSRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 139995fab37eSRobert Watson { 140095fab37eSRobert Watson 140195fab37eSRobert Watson mac_init_label(&bpf_d->bd_label); 140295fab37eSRobert Watson MAC_PERFORM(init_bpfdesc, bpf_d, &bpf_d->bd_label); 1403f050add5SRobert Watson #ifdef MAC_DEBUG 140495fab37eSRobert Watson atomic_add_int(&nmacbpfdescs, 1); 1405f050add5SRobert Watson #endif 140695fab37eSRobert Watson } 140795fab37eSRobert Watson 140895fab37eSRobert Watson void 140995fab37eSRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 141095fab37eSRobert Watson { 141195fab37eSRobert Watson 141295fab37eSRobert Watson MAC_PERFORM(destroy_bpfdesc, bpf_d, &bpf_d->bd_label); 141395fab37eSRobert Watson mac_destroy_label(&bpf_d->bd_label); 1414f050add5SRobert Watson #ifdef MAC_DEBUG 141595fab37eSRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 1416f050add5SRobert Watson #endif 141795fab37eSRobert Watson } 141895fab37eSRobert Watson 141995fab37eSRobert Watson void 142095fab37eSRobert Watson mac_init_mount(struct mount *mp) 142195fab37eSRobert Watson { 142295fab37eSRobert Watson 142395fab37eSRobert Watson mac_init_label(&mp->mnt_mntlabel); 142495fab37eSRobert Watson mac_init_label(&mp->mnt_fslabel); 142595fab37eSRobert Watson MAC_PERFORM(init_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 1426f050add5SRobert Watson #ifdef MAC_DEBUG 142795fab37eSRobert Watson atomic_add_int(&nmacmounts, 1); 1428f050add5SRobert Watson #endif 142995fab37eSRobert Watson } 143095fab37eSRobert Watson 143195fab37eSRobert Watson void 143295fab37eSRobert Watson mac_destroy_mount(struct mount *mp) 143395fab37eSRobert Watson { 143495fab37eSRobert Watson 143595fab37eSRobert Watson MAC_PERFORM(destroy_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 143695fab37eSRobert Watson mac_destroy_label(&mp->mnt_fslabel); 143795fab37eSRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 1438f050add5SRobert Watson #ifdef MAC_DEBUG 143995fab37eSRobert Watson atomic_subtract_int(&nmacmounts, 1); 1440f050add5SRobert Watson #endif 144195fab37eSRobert Watson } 144295fab37eSRobert Watson 144395fab37eSRobert Watson static void 144495fab37eSRobert Watson mac_init_temp(struct label *label) 144595fab37eSRobert Watson { 144695fab37eSRobert Watson 144795fab37eSRobert Watson mac_init_label(label); 144895fab37eSRobert Watson MAC_PERFORM(init_temp, label); 1449f050add5SRobert Watson #ifdef MAC_DEBUG 145095fab37eSRobert Watson atomic_add_int(&nmactemp, 1); 1451f050add5SRobert Watson #endif 145295fab37eSRobert Watson } 145395fab37eSRobert Watson 145495fab37eSRobert Watson static void 145595fab37eSRobert Watson mac_destroy_temp(struct label *label) 145695fab37eSRobert Watson { 145795fab37eSRobert Watson 145895fab37eSRobert Watson MAC_PERFORM(destroy_temp, label); 145995fab37eSRobert Watson mac_destroy_label(label); 1460f050add5SRobert Watson #ifdef MAC_DEBUG 146195fab37eSRobert Watson atomic_subtract_int(&nmactemp, 1); 1462f050add5SRobert Watson #endif 146395fab37eSRobert Watson } 146495fab37eSRobert Watson 146595fab37eSRobert Watson void 146695fab37eSRobert Watson mac_init_vnode(struct vnode *vp) 146795fab37eSRobert Watson { 146895fab37eSRobert Watson 146995fab37eSRobert Watson mac_init_label(&vp->v_label); 147095fab37eSRobert Watson MAC_PERFORM(init_vnode, vp, &vp->v_label); 1471f050add5SRobert Watson #ifdef MAC_DEBUG 147295fab37eSRobert Watson atomic_add_int(&nmacvnodes, 1); 1473f050add5SRobert Watson #endif 147495fab37eSRobert Watson } 147595fab37eSRobert Watson 147695fab37eSRobert Watson void 147795fab37eSRobert Watson mac_destroy_vnode(struct vnode *vp) 147895fab37eSRobert Watson { 147995fab37eSRobert Watson 148095fab37eSRobert Watson MAC_PERFORM(destroy_vnode, vp, &vp->v_label); 148195fab37eSRobert Watson mac_destroy_label(&vp->v_label); 1482f050add5SRobert Watson #ifdef MAC_DEBUG 148395fab37eSRobert Watson atomic_subtract_int(&nmacvnodes, 1); 1484f050add5SRobert Watson #endif 148595fab37eSRobert Watson } 148695fab37eSRobert Watson 148795fab37eSRobert Watson void 148895fab37eSRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 148995fab37eSRobert Watson { 149095fab37eSRobert Watson 149195fab37eSRobert Watson mac_init_label(&de->de_label); 149295fab37eSRobert Watson MAC_PERFORM(init_devfsdirent, de, &de->de_label); 1493f050add5SRobert Watson #ifdef MAC_DEBUG 149495fab37eSRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 1495f050add5SRobert Watson #endif 149695fab37eSRobert Watson } 149795fab37eSRobert Watson 149895fab37eSRobert Watson void 149995fab37eSRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 150095fab37eSRobert Watson { 150195fab37eSRobert Watson 150295fab37eSRobert Watson MAC_PERFORM(destroy_devfsdirent, de, &de->de_label); 150395fab37eSRobert Watson mac_destroy_label(&de->de_label); 1504f050add5SRobert Watson #ifdef MAC_DEBUG 150595fab37eSRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 1506f050add5SRobert Watson #endif 150795fab37eSRobert Watson } 150895fab37eSRobert Watson 150995fab37eSRobert Watson static int 151095fab37eSRobert Watson mac_externalize(struct label *label, struct mac *mac) 151195fab37eSRobert Watson { 151295fab37eSRobert Watson int error; 151395fab37eSRobert Watson 151495fab37eSRobert Watson mac_init_structmac(mac); 151595fab37eSRobert Watson MAC_CHECK(externalize, label, mac); 151695fab37eSRobert Watson 151795fab37eSRobert Watson return (error); 151895fab37eSRobert Watson } 151995fab37eSRobert Watson 152095fab37eSRobert Watson static int 152195fab37eSRobert Watson mac_internalize(struct label *label, struct mac *mac) 152295fab37eSRobert Watson { 152395fab37eSRobert Watson int error; 152495fab37eSRobert Watson 152595fab37eSRobert Watson mac_init_temp(label); 152695fab37eSRobert Watson MAC_CHECK(internalize, label, mac); 152795fab37eSRobert Watson if (error) 152895fab37eSRobert Watson mac_destroy_temp(label); 152995fab37eSRobert Watson 153095fab37eSRobert Watson return (error); 153195fab37eSRobert Watson } 153295fab37eSRobert Watson 153395fab37eSRobert Watson /* 153495fab37eSRobert Watson * Initialize MAC label for the first kernel process, from which other 153595fab37eSRobert Watson * kernel processes and threads are spawned. 153695fab37eSRobert Watson */ 153795fab37eSRobert Watson void 153895fab37eSRobert Watson mac_create_proc0(struct ucred *cred) 153995fab37eSRobert Watson { 154095fab37eSRobert Watson 154195fab37eSRobert Watson MAC_PERFORM(create_proc0, cred); 154295fab37eSRobert Watson } 154395fab37eSRobert Watson 154495fab37eSRobert Watson /* 154595fab37eSRobert Watson * Initialize MAC label for the first userland process, from which other 154695fab37eSRobert Watson * userland processes and threads are spawned. 154795fab37eSRobert Watson */ 154895fab37eSRobert Watson void 154995fab37eSRobert Watson mac_create_proc1(struct ucred *cred) 155095fab37eSRobert Watson { 155195fab37eSRobert Watson 155295fab37eSRobert Watson MAC_PERFORM(create_proc1, cred); 155395fab37eSRobert Watson } 155495fab37eSRobert Watson 155595fab37eSRobert Watson /* 155695fab37eSRobert Watson * When a new process is created, its label must be initialized. Generally, 155795fab37eSRobert Watson * this involves inheritence from the parent process, modulo possible 155895fab37eSRobert Watson * deltas. This function allows that processing to take place. 155995fab37eSRobert Watson */ 156095fab37eSRobert Watson void 156195fab37eSRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 156295fab37eSRobert Watson { 156395fab37eSRobert Watson 156495fab37eSRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 156595fab37eSRobert Watson } 156695fab37eSRobert Watson 156795fab37eSRobert Watson int 156895fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 156995fab37eSRobert Watson { 157095fab37eSRobert Watson int error; 157195fab37eSRobert Watson 157295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 157395fab37eSRobert Watson 157495fab37eSRobert Watson if (!mac_enforce_fs) 157595fab37eSRobert Watson return (0); 157695fab37eSRobert Watson 157795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 157895fab37eSRobert Watson if (error) 157995fab37eSRobert Watson return (error); 158095fab37eSRobert Watson 158195fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 158295fab37eSRobert Watson return (error); 158395fab37eSRobert Watson } 158495fab37eSRobert Watson 158595fab37eSRobert Watson int 158695fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 158795fab37eSRobert Watson { 158895fab37eSRobert Watson int error; 158995fab37eSRobert Watson 159095fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 159195fab37eSRobert Watson 159295fab37eSRobert Watson if (!mac_enforce_fs) 159395fab37eSRobert Watson return (0); 159495fab37eSRobert Watson 159595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 159695fab37eSRobert Watson if (error) 159795fab37eSRobert Watson return (error); 159895fab37eSRobert Watson 159995fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 160095fab37eSRobert Watson return (error); 160195fab37eSRobert Watson } 160295fab37eSRobert Watson 160395fab37eSRobert Watson int 160495fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 160595fab37eSRobert Watson { 160695fab37eSRobert Watson int error; 160795fab37eSRobert Watson 160895fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 160995fab37eSRobert Watson 161095fab37eSRobert Watson if (!mac_enforce_fs) 161195fab37eSRobert Watson return (0); 161295fab37eSRobert Watson 161395fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 161495fab37eSRobert Watson if (error) 161595fab37eSRobert Watson return (error); 161695fab37eSRobert Watson 161795fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 161895fab37eSRobert Watson return (error); 161995fab37eSRobert Watson } 162095fab37eSRobert Watson 162195fab37eSRobert Watson int 162295fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 162395fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 162495fab37eSRobert Watson { 162595fab37eSRobert Watson int error; 162695fab37eSRobert Watson 162795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 162895fab37eSRobert Watson 162995fab37eSRobert Watson if (!mac_enforce_fs) 163095fab37eSRobert Watson return (0); 163195fab37eSRobert Watson 163295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 163395fab37eSRobert Watson if (error) 163495fab37eSRobert Watson return (error); 163595fab37eSRobert Watson 163695fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 163795fab37eSRobert Watson return (error); 163895fab37eSRobert Watson } 163995fab37eSRobert Watson 164095fab37eSRobert Watson int 164195fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 164295fab37eSRobert Watson struct componentname *cnp) 164395fab37eSRobert Watson { 164495fab37eSRobert Watson int error; 164595fab37eSRobert Watson 164695fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 164795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 164895fab37eSRobert Watson 164995fab37eSRobert Watson if (!mac_enforce_fs) 165095fab37eSRobert Watson return (0); 165195fab37eSRobert Watson 165295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 165395fab37eSRobert Watson if (error) 165495fab37eSRobert Watson return (error); 165595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 165695fab37eSRobert Watson if (error) 165795fab37eSRobert Watson return (error); 165895fab37eSRobert Watson 165995fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 166095fab37eSRobert Watson &vp->v_label, cnp); 166195fab37eSRobert Watson return (error); 166295fab37eSRobert Watson } 166395fab37eSRobert Watson 166495fab37eSRobert Watson int 166595fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 166695fab37eSRobert Watson acl_type_t type) 166795fab37eSRobert Watson { 166895fab37eSRobert Watson int error; 166995fab37eSRobert Watson 167095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 167195fab37eSRobert Watson 167295fab37eSRobert Watson if (!mac_enforce_fs) 167395fab37eSRobert Watson return (0); 167495fab37eSRobert Watson 167595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 167695fab37eSRobert Watson if (error) 167795fab37eSRobert Watson return (error); 167895fab37eSRobert Watson 167995fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 168095fab37eSRobert Watson return (error); 168195fab37eSRobert Watson } 168295fab37eSRobert Watson 168395fab37eSRobert Watson int 168495fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 168595fab37eSRobert Watson { 168695fab37eSRobert Watson int error; 168795fab37eSRobert Watson 1688851704bbSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1689851704bbSRobert Watson 169095fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 169195fab37eSRobert Watson return (0); 169295fab37eSRobert Watson 169395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 169495fab37eSRobert Watson if (error) 169595fab37eSRobert Watson return (error); 169695fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 169795fab37eSRobert Watson 169895fab37eSRobert Watson return (error); 169995fab37eSRobert Watson } 170095fab37eSRobert Watson 170195fab37eSRobert Watson int 170295fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 170395fab37eSRobert Watson { 170495fab37eSRobert Watson int error; 170595fab37eSRobert Watson 170695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 170795fab37eSRobert Watson 170895fab37eSRobert Watson if (!mac_enforce_fs) 170995fab37eSRobert Watson return (0); 171095fab37eSRobert Watson 171195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 171295fab37eSRobert Watson if (error) 171395fab37eSRobert Watson return (error); 171495fab37eSRobert Watson 171595fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 171695fab37eSRobert Watson return (error); 171795fab37eSRobert Watson } 171895fab37eSRobert Watson 171995fab37eSRobert Watson int 172095fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 172195fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 172295fab37eSRobert Watson { 172395fab37eSRobert Watson int error; 172495fab37eSRobert Watson 172595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 172695fab37eSRobert Watson 172795fab37eSRobert Watson if (!mac_enforce_fs) 172895fab37eSRobert Watson return (0); 172995fab37eSRobert Watson 173095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 173195fab37eSRobert Watson if (error) 173295fab37eSRobert Watson return (error); 173395fab37eSRobert Watson 173495fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 173595fab37eSRobert Watson attrnamespace, name, uio); 173695fab37eSRobert Watson return (error); 173795fab37eSRobert Watson } 173895fab37eSRobert Watson 173995fab37eSRobert Watson int 174095fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 174195fab37eSRobert Watson struct componentname *cnp) 174295fab37eSRobert Watson { 174395fab37eSRobert Watson int error; 174495fab37eSRobert Watson 174595fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 174695fab37eSRobert Watson 174795fab37eSRobert Watson if (!mac_enforce_fs) 174895fab37eSRobert Watson return (0); 174995fab37eSRobert Watson 175095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 175195fab37eSRobert Watson if (error) 175295fab37eSRobert Watson return (error); 175395fab37eSRobert Watson 175495fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 175595fab37eSRobert Watson return (error); 175695fab37eSRobert Watson } 175795fab37eSRobert Watson 175895fab37eSRobert Watson vm_prot_t 175995fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 176095fab37eSRobert Watson { 176195fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 176295fab37eSRobert Watson 176395fab37eSRobert Watson /* 176495fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 176595fab37eSRobert Watson */ 176695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 176795fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 176895fab37eSRobert Watson newmapping); 176995fab37eSRobert Watson return (result); 177095fab37eSRobert Watson } 177195fab37eSRobert Watson 177295fab37eSRobert Watson int 177395fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 177495fab37eSRobert Watson { 177595fab37eSRobert Watson int error; 177695fab37eSRobert Watson 177795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 177895fab37eSRobert Watson 177995fab37eSRobert Watson if (!mac_enforce_fs) 178095fab37eSRobert Watson return (0); 178195fab37eSRobert Watson 178295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 178395fab37eSRobert Watson if (error) 178495fab37eSRobert Watson return (error); 178595fab37eSRobert Watson 178695fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 178795fab37eSRobert Watson return (error); 178895fab37eSRobert Watson } 178995fab37eSRobert Watson 179095fab37eSRobert Watson int 17917f724f8bSRobert Watson mac_check_vnode_poll(struct ucred *cred, struct vnode *vp) 17927f724f8bSRobert Watson { 17937f724f8bSRobert Watson int error; 17947f724f8bSRobert Watson 17957f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll"); 17967f724f8bSRobert Watson 17977f724f8bSRobert Watson if (!mac_enforce_fs) 17987f724f8bSRobert Watson return (0); 17997f724f8bSRobert Watson 18007f724f8bSRobert Watson error = vn_refreshlabel(vp, cred); 18017f724f8bSRobert Watson if (error) 18027f724f8bSRobert Watson return (error); 18037f724f8bSRobert Watson 18047f724f8bSRobert Watson MAC_CHECK(check_vnode_poll, cred, vp, &vp->v_label); 18057f724f8bSRobert Watson 18067f724f8bSRobert Watson return (error); 18077f724f8bSRobert Watson } 18087f724f8bSRobert Watson 18097f724f8bSRobert Watson int 18107f724f8bSRobert Watson mac_check_vnode_read(struct ucred *cred, struct vnode *vp) 18117f724f8bSRobert Watson { 18127f724f8bSRobert Watson int error; 18137f724f8bSRobert Watson 18147f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read"); 18157f724f8bSRobert Watson 18167f724f8bSRobert Watson if (!mac_enforce_fs) 18177f724f8bSRobert Watson return (0); 18187f724f8bSRobert Watson 18197f724f8bSRobert Watson error = vn_refreshlabel(vp, cred); 18207f724f8bSRobert Watson if (error) 18217f724f8bSRobert Watson return (error); 18227f724f8bSRobert Watson 18237f724f8bSRobert Watson MAC_CHECK(check_vnode_read, cred, vp, &vp->v_label); 18247f724f8bSRobert Watson 18257f724f8bSRobert Watson return (error); 18267f724f8bSRobert Watson } 18277f724f8bSRobert Watson 18287f724f8bSRobert Watson int 182995fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 183095fab37eSRobert Watson { 183195fab37eSRobert Watson int error; 183295fab37eSRobert Watson 183395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 183495fab37eSRobert Watson 183595fab37eSRobert Watson if (!mac_enforce_fs) 183695fab37eSRobert Watson return (0); 183795fab37eSRobert Watson 183895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 183995fab37eSRobert Watson if (error) 184095fab37eSRobert Watson return (error); 184195fab37eSRobert Watson 184295fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 184395fab37eSRobert Watson return (error); 184495fab37eSRobert Watson } 184595fab37eSRobert Watson 184695fab37eSRobert Watson int 184795fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 184895fab37eSRobert Watson { 184995fab37eSRobert Watson int error; 185095fab37eSRobert Watson 185195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 185295fab37eSRobert Watson 185395fab37eSRobert Watson if (!mac_enforce_fs) 185495fab37eSRobert Watson return (0); 185595fab37eSRobert Watson 185695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 185795fab37eSRobert Watson if (error) 185895fab37eSRobert Watson return (error); 185995fab37eSRobert Watson 186095fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 186195fab37eSRobert Watson return (error); 186295fab37eSRobert Watson } 186395fab37eSRobert Watson 186495fab37eSRobert Watson static int 186595fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 186695fab37eSRobert Watson struct label *newlabel) 186795fab37eSRobert Watson { 186895fab37eSRobert Watson int error; 186995fab37eSRobert Watson 187095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 187195fab37eSRobert Watson 187295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 187395fab37eSRobert Watson if (error) 187495fab37eSRobert Watson return (error); 187595fab37eSRobert Watson 187695fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 187795fab37eSRobert Watson 187895fab37eSRobert Watson return (error); 187995fab37eSRobert Watson } 188095fab37eSRobert Watson 188195fab37eSRobert Watson int 188295fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 188395fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 188495fab37eSRobert Watson { 188595fab37eSRobert Watson int error; 188695fab37eSRobert Watson 188795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 188895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 188995fab37eSRobert Watson 189095fab37eSRobert Watson if (!mac_enforce_fs) 189195fab37eSRobert Watson return (0); 189295fab37eSRobert Watson 189395fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 189495fab37eSRobert Watson if (error) 189595fab37eSRobert Watson return (error); 189695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 189795fab37eSRobert Watson if (error) 189895fab37eSRobert Watson return (error); 189995fab37eSRobert Watson 190095fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 190195fab37eSRobert Watson &vp->v_label, cnp); 190295fab37eSRobert Watson return (error); 190395fab37eSRobert Watson } 190495fab37eSRobert Watson 190595fab37eSRobert Watson int 190695fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 190795fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 190895fab37eSRobert Watson { 190995fab37eSRobert Watson int error; 191095fab37eSRobert Watson 191195fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 191295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 191395fab37eSRobert Watson 191495fab37eSRobert Watson if (!mac_enforce_fs) 191595fab37eSRobert Watson return (0); 191695fab37eSRobert Watson 191795fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 191895fab37eSRobert Watson if (error) 191995fab37eSRobert Watson return (error); 192095fab37eSRobert Watson if (vp != NULL) { 192195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 192295fab37eSRobert Watson if (error) 192395fab37eSRobert Watson return (error); 192495fab37eSRobert Watson } 192595fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 192695fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 192795fab37eSRobert Watson return (error); 192895fab37eSRobert Watson } 192995fab37eSRobert Watson 193095fab37eSRobert Watson int 193195fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 193295fab37eSRobert Watson { 193395fab37eSRobert Watson int error; 193495fab37eSRobert Watson 193595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 193695fab37eSRobert Watson 193795fab37eSRobert Watson if (!mac_enforce_fs) 193895fab37eSRobert Watson return (0); 193995fab37eSRobert Watson 194095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 194195fab37eSRobert Watson if (error) 194295fab37eSRobert Watson return (error); 194395fab37eSRobert Watson 194495fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 194595fab37eSRobert Watson return (error); 194695fab37eSRobert Watson } 194795fab37eSRobert Watson 194895fab37eSRobert Watson int 194995fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 195095fab37eSRobert Watson struct acl *acl) 195195fab37eSRobert Watson { 195295fab37eSRobert Watson int error; 195395fab37eSRobert Watson 195495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 195595fab37eSRobert Watson 195695fab37eSRobert Watson if (!mac_enforce_fs) 195795fab37eSRobert Watson return (0); 195895fab37eSRobert Watson 195995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 196095fab37eSRobert Watson if (error) 196195fab37eSRobert Watson return (error); 196295fab37eSRobert Watson 196395fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 196495fab37eSRobert Watson return (error); 196595fab37eSRobert Watson } 196695fab37eSRobert Watson 196795fab37eSRobert Watson int 196895fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 196995fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 197095fab37eSRobert Watson { 197195fab37eSRobert Watson int error; 197295fab37eSRobert Watson 197395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 197495fab37eSRobert Watson 197595fab37eSRobert Watson if (!mac_enforce_fs) 197695fab37eSRobert Watson return (0); 197795fab37eSRobert Watson 197895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 197995fab37eSRobert Watson if (error) 198095fab37eSRobert Watson return (error); 198195fab37eSRobert Watson 198295fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 198395fab37eSRobert Watson attrnamespace, name, uio); 198495fab37eSRobert Watson return (error); 198595fab37eSRobert Watson } 198695fab37eSRobert Watson 198795fab37eSRobert Watson int 198895fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 198995fab37eSRobert Watson { 199095fab37eSRobert Watson int error; 199195fab37eSRobert Watson 199295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 199395fab37eSRobert Watson 199495fab37eSRobert Watson if (!mac_enforce_fs) 199595fab37eSRobert Watson return (0); 199695fab37eSRobert Watson 199795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 199895fab37eSRobert Watson if (error) 199995fab37eSRobert Watson return (error); 200095fab37eSRobert Watson 200195fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 200295fab37eSRobert Watson return (error); 200395fab37eSRobert Watson } 200495fab37eSRobert Watson 200595fab37eSRobert Watson int 200695fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 200795fab37eSRobert Watson { 200895fab37eSRobert Watson int error; 200995fab37eSRobert Watson 201095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 201195fab37eSRobert Watson 201295fab37eSRobert Watson if (!mac_enforce_fs) 201395fab37eSRobert Watson return (0); 201495fab37eSRobert Watson 201595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 201695fab37eSRobert Watson if (error) 201795fab37eSRobert Watson return (error); 201895fab37eSRobert Watson 201995fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 202095fab37eSRobert Watson return (error); 202195fab37eSRobert Watson } 202295fab37eSRobert Watson 202395fab37eSRobert Watson int 202495fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 202595fab37eSRobert Watson gid_t gid) 202695fab37eSRobert Watson { 202795fab37eSRobert Watson int error; 202895fab37eSRobert Watson 202995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 203095fab37eSRobert Watson 203195fab37eSRobert Watson if (!mac_enforce_fs) 203295fab37eSRobert Watson return (0); 203395fab37eSRobert Watson 203495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 203595fab37eSRobert Watson if (error) 203695fab37eSRobert Watson return (error); 203795fab37eSRobert Watson 203895fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 203995fab37eSRobert Watson return (error); 204095fab37eSRobert Watson } 204195fab37eSRobert Watson 204295fab37eSRobert Watson int 204395fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 204495fab37eSRobert Watson struct timespec atime, struct timespec mtime) 204595fab37eSRobert Watson { 204695fab37eSRobert Watson int error; 204795fab37eSRobert Watson 204895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 204995fab37eSRobert Watson 205095fab37eSRobert Watson if (!mac_enforce_fs) 205195fab37eSRobert Watson return (0); 205295fab37eSRobert Watson 205395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 205495fab37eSRobert Watson if (error) 205595fab37eSRobert Watson return (error); 205695fab37eSRobert Watson 205795fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 205895fab37eSRobert Watson mtime); 205995fab37eSRobert Watson return (error); 206095fab37eSRobert Watson } 206195fab37eSRobert Watson 206295fab37eSRobert Watson int 206395fab37eSRobert Watson mac_check_vnode_stat(struct ucred *cred, struct vnode *vp) 206495fab37eSRobert Watson { 206595fab37eSRobert Watson int error; 206695fab37eSRobert Watson 206795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 206895fab37eSRobert Watson 206995fab37eSRobert Watson if (!mac_enforce_fs) 207095fab37eSRobert Watson return (0); 207195fab37eSRobert Watson 207295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 207395fab37eSRobert Watson if (error) 207495fab37eSRobert Watson return (error); 207595fab37eSRobert Watson 207695fab37eSRobert Watson MAC_CHECK(check_vnode_stat, cred, vp, &vp->v_label); 207795fab37eSRobert Watson return (error); 207895fab37eSRobert Watson } 207995fab37eSRobert Watson 20807f724f8bSRobert Watson int 20817f724f8bSRobert Watson mac_check_vnode_write(struct ucred *cred, struct vnode *vp) 20827f724f8bSRobert Watson { 20837f724f8bSRobert Watson int error; 20847f724f8bSRobert Watson 20857f724f8bSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write"); 20867f724f8bSRobert Watson 20877f724f8bSRobert Watson if (!mac_enforce_fs) 20887f724f8bSRobert Watson return (0); 20897f724f8bSRobert Watson 20907f724f8bSRobert Watson error = vn_refreshlabel(vp, cred); 20917f724f8bSRobert Watson if (error) 20927f724f8bSRobert Watson return (error); 20937f724f8bSRobert Watson 20947f724f8bSRobert Watson MAC_CHECK(check_vnode_write, cred, vp, &vp->v_label); 20957f724f8bSRobert Watson 20967f724f8bSRobert Watson return (error); 20977f724f8bSRobert Watson } 20987f724f8bSRobert Watson 20997f724f8bSRobert Watson 210095fab37eSRobert Watson /* 210195fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 210295fab37eSRobert Watson * permission allowed for each object type we know about in its 210395fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 210495fab37eSRobert Watson * know) when necessary. The process lock is not held here. 210595fab37eSRobert Watson */ 210695fab37eSRobert Watson static void 210795fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 210895fab37eSRobert Watson { 210995fab37eSRobert Watson 211095fab37eSRobert Watson /* XXX freeze all other threads */ 211195fab37eSRobert Watson mtx_lock(&Giant); 211295fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 211395fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 211495fab37eSRobert Watson mtx_unlock(&Giant); 211595fab37eSRobert Watson /* XXX allow other threads to continue */ 211695fab37eSRobert Watson } 211795fab37eSRobert Watson 211895fab37eSRobert Watson static __inline const char * 211995fab37eSRobert Watson prot2str(vm_prot_t prot) 212095fab37eSRobert Watson { 212195fab37eSRobert Watson 212295fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 212395fab37eSRobert Watson case VM_PROT_READ: 212495fab37eSRobert Watson return ("r--"); 212595fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 212695fab37eSRobert Watson return ("rw-"); 212795fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 212895fab37eSRobert Watson return ("r-x"); 212995fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 213095fab37eSRobert Watson return ("rwx"); 213195fab37eSRobert Watson case VM_PROT_WRITE: 213295fab37eSRobert Watson return ("-w-"); 213395fab37eSRobert Watson case VM_PROT_EXECUTE: 213495fab37eSRobert Watson return ("--x"); 213595fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 213695fab37eSRobert Watson return ("-wx"); 213795fab37eSRobert Watson default: 213895fab37eSRobert Watson return ("---"); 213995fab37eSRobert Watson } 214095fab37eSRobert Watson } 214195fab37eSRobert Watson 214295fab37eSRobert Watson static void 214395fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 214495fab37eSRobert Watson struct vm_map *map) 214595fab37eSRobert Watson { 214695fab37eSRobert Watson struct vm_map_entry *vme; 214795fab37eSRobert Watson vm_prot_t result, revokeperms; 214895fab37eSRobert Watson vm_object_t object; 214995fab37eSRobert Watson vm_ooffset_t offset; 215095fab37eSRobert Watson struct vnode *vp; 215195fab37eSRobert Watson 215295fab37eSRobert Watson vm_map_lock_read(map); 215395fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 215495fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 215595fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 215695fab37eSRobert Watson vme->object.sub_map); 215795fab37eSRobert Watson continue; 215895fab37eSRobert Watson } 215995fab37eSRobert Watson /* 216095fab37eSRobert Watson * Skip over entries that obviously are not shared. 216195fab37eSRobert Watson */ 216295fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 216395fab37eSRobert Watson !vme->max_protection) 216495fab37eSRobert Watson continue; 216595fab37eSRobert Watson /* 216695fab37eSRobert Watson * Drill down to the deepest backing object. 216795fab37eSRobert Watson */ 216895fab37eSRobert Watson offset = vme->offset; 216995fab37eSRobert Watson object = vme->object.vm_object; 217095fab37eSRobert Watson if (object == NULL) 217195fab37eSRobert Watson continue; 217295fab37eSRobert Watson while (object->backing_object != NULL) { 217395fab37eSRobert Watson object = object->backing_object; 217495fab37eSRobert Watson offset += object->backing_object_offset; 217595fab37eSRobert Watson } 217695fab37eSRobert Watson /* 217795fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 217895fab37eSRobert Watson * by the MAC system, so only things with backing by a 217995fab37eSRobert Watson * normal object (read: vnodes) are checked. 218095fab37eSRobert Watson */ 218195fab37eSRobert Watson if (object->type != OBJT_VNODE) 218295fab37eSRobert Watson continue; 218395fab37eSRobert Watson vp = (struct vnode *)object->handle; 218495fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 218595fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 218695fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 218795fab37eSRobert Watson /* 218895fab37eSRobert Watson * Find out what maximum protection we may be allowing 218995fab37eSRobert Watson * now but a policy needs to get removed. 219095fab37eSRobert Watson */ 219195fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 219295fab37eSRobert Watson if (!revokeperms) 219395fab37eSRobert Watson continue; 219495fab37eSRobert Watson printf("pid %d: revoking %s perms from %#lx:%d " 219595fab37eSRobert Watson "(max %s/cur %s)\n", td->td_proc->p_pid, 219695fab37eSRobert Watson prot2str(revokeperms), vme->start, vme->end - vme->start, 219795fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 219895fab37eSRobert Watson vm_map_lock_upgrade(map); 219995fab37eSRobert Watson /* 220095fab37eSRobert Watson * This is the really simple case: if a map has more 220195fab37eSRobert Watson * max_protection than is allowed, but it's not being 220295fab37eSRobert Watson * actually used (that is, the current protection is 220395fab37eSRobert Watson * still allowed), we can just wipe it out and do 220495fab37eSRobert Watson * nothing more. 220595fab37eSRobert Watson */ 220695fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 220795fab37eSRobert Watson vme->max_protection -= revokeperms; 220895fab37eSRobert Watson } else { 220995fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 221095fab37eSRobert Watson /* 221195fab37eSRobert Watson * In the more complicated case, flush out all 221295fab37eSRobert Watson * pending changes to the object then turn it 221395fab37eSRobert Watson * copy-on-write. 221495fab37eSRobert Watson */ 221595fab37eSRobert Watson vm_object_reference(object); 221695fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 221795fab37eSRobert Watson vm_object_page_clean(object, 221895fab37eSRobert Watson OFF_TO_IDX(offset), 221995fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 222095fab37eSRobert Watson PAGE_MASK), 222195fab37eSRobert Watson OBJPC_SYNC); 222295fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 222395fab37eSRobert Watson vm_object_deallocate(object); 222495fab37eSRobert Watson /* 222595fab37eSRobert Watson * Why bother if there's no read permissions 222695fab37eSRobert Watson * anymore? For the rest, we need to leave 222795fab37eSRobert Watson * the write permissions on for COW, or 222895fab37eSRobert Watson * remove them entirely if configured to. 222995fab37eSRobert Watson */ 223095fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 223195fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 223295fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 223395fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 223495fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 223595fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 223695fab37eSRobert Watson } 223795fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 223895fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 223995fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 224095fab37eSRobert Watson } 224195fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 224295fab37eSRobert Watson vme->max_protection = 0; 224395fab37eSRobert Watson vme->protection = 0; 224495fab37eSRobert Watson } 224595fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 224695fab37eSRobert Watson vme->protection & ~revokeperms); 224795fab37eSRobert Watson vm_map_simplify_entry(map, vme); 224895fab37eSRobert Watson } 224995fab37eSRobert Watson vm_map_lock_downgrade(map); 225095fab37eSRobert Watson } 225195fab37eSRobert Watson vm_map_unlock_read(map); 225295fab37eSRobert Watson } 225395fab37eSRobert Watson 225495fab37eSRobert Watson /* 225595fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 225695fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 225795fab37eSRobert Watson * buffer cache. 225895fab37eSRobert Watson */ 225995fab37eSRobert Watson static void 226095fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 226195fab37eSRobert Watson { 226295fab37eSRobert Watson 226395fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 226495fab37eSRobert Watson mac_cred_mmapped_drop_perms(curthread, cred); 226595fab37eSRobert Watson } 226695fab37eSRobert Watson 226795fab37eSRobert Watson void 226895fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 226995fab37eSRobert Watson { 227095fab37eSRobert Watson 227195fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 227295fab37eSRobert Watson } 227395fab37eSRobert Watson 227495fab37eSRobert Watson void 227595fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 227695fab37eSRobert Watson { 227795fab37eSRobert Watson 227895fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 227995fab37eSRobert Watson } 228095fab37eSRobert Watson 228195fab37eSRobert Watson void 228295fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 228395fab37eSRobert Watson { 228495fab37eSRobert Watson 228595fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 228695fab37eSRobert Watson } 228795fab37eSRobert Watson 228895fab37eSRobert Watson void 228995fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 229095fab37eSRobert Watson { 229195fab37eSRobert Watson 229295fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 229395fab37eSRobert Watson } 229495fab37eSRobert Watson 229595fab37eSRobert Watson void 229695fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 229795fab37eSRobert Watson { 229895fab37eSRobert Watson 229995fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 230095fab37eSRobert Watson } 230195fab37eSRobert Watson 230295fab37eSRobert Watson void 230395fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 230495fab37eSRobert Watson struct socket *newsocket) 230595fab37eSRobert Watson { 230695fab37eSRobert Watson 230795fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 230895fab37eSRobert Watson newsocket, &newsocket->so_label); 230995fab37eSRobert Watson } 231095fab37eSRobert Watson 231195fab37eSRobert Watson static void 231295fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 231395fab37eSRobert Watson struct label *newlabel) 231495fab37eSRobert Watson { 231595fab37eSRobert Watson 231695fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 231795fab37eSRobert Watson } 231895fab37eSRobert Watson 231995fab37eSRobert Watson static void 232095fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 232195fab37eSRobert Watson { 232295fab37eSRobert Watson 232395fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 232495fab37eSRobert Watson } 232595fab37eSRobert Watson 232695fab37eSRobert Watson void 232795fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 232895fab37eSRobert Watson { 232995fab37eSRobert Watson 233095fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 233195fab37eSRobert Watson socket, &socket->so_peerlabel); 233295fab37eSRobert Watson } 233395fab37eSRobert Watson 233495fab37eSRobert Watson void 233595fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 233695fab37eSRobert Watson struct socket *newsocket) 233795fab37eSRobert Watson { 233895fab37eSRobert Watson 233995fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 234095fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 234195fab37eSRobert Watson } 234295fab37eSRobert Watson 234395fab37eSRobert Watson void 234495fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 234595fab37eSRobert Watson { 234695fab37eSRobert Watson 234795fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 234895fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 234995fab37eSRobert Watson } 235095fab37eSRobert Watson 235195fab37eSRobert Watson void 235295fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 235395fab37eSRobert Watson { 235495fab37eSRobert Watson 235595fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 235695fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 235795fab37eSRobert Watson } 235895fab37eSRobert Watson 235995fab37eSRobert Watson void 236095fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 236195fab37eSRobert Watson { 236295fab37eSRobert Watson 236395fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 236495fab37eSRobert Watson &ipq->ipq_label); 236595fab37eSRobert Watson } 236695fab37eSRobert Watson 236795fab37eSRobert Watson void 236895fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 236995fab37eSRobert Watson { 237095fab37eSRobert Watson 237195fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 237295fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 237395fab37eSRobert Watson } 237495fab37eSRobert Watson 237595fab37eSRobert Watson void 237695fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 237795fab37eSRobert Watson { 237895fab37eSRobert Watson 237995fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 238095fab37eSRobert Watson &mbuf->m_pkthdr.label); 238195fab37eSRobert Watson } 238295fab37eSRobert Watson 238395fab37eSRobert Watson void 238495fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 238595fab37eSRobert Watson { 238695fab37eSRobert Watson 238795fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 238895fab37eSRobert Watson &mbuf->m_pkthdr.label); 238995fab37eSRobert Watson } 239095fab37eSRobert Watson 239195fab37eSRobert Watson void 239295fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 239395fab37eSRobert Watson { 239495fab37eSRobert Watson 239595fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 239695fab37eSRobert Watson &mbuf->m_pkthdr.label); 239795fab37eSRobert Watson } 239895fab37eSRobert Watson 239995fab37eSRobert Watson void 240095fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 240195fab37eSRobert Watson struct mbuf *newmbuf) 240295fab37eSRobert Watson { 240395fab37eSRobert Watson 240495fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 240595fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 240695fab37eSRobert Watson &newmbuf->m_pkthdr.label); 240795fab37eSRobert Watson } 240895fab37eSRobert Watson 240995fab37eSRobert Watson void 241095fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 241195fab37eSRobert Watson { 241295fab37eSRobert Watson 241395fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 241495fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 241595fab37eSRobert Watson } 241695fab37eSRobert Watson 241795fab37eSRobert Watson int 241895fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 241995fab37eSRobert Watson { 242095fab37eSRobert Watson int result; 242195fab37eSRobert Watson 242295fab37eSRobert Watson result = 1; 242395fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 242495fab37eSRobert Watson ipq, &ipq->ipq_label); 242595fab37eSRobert Watson 242695fab37eSRobert Watson return (result); 242795fab37eSRobert Watson } 242895fab37eSRobert Watson 242995fab37eSRobert Watson void 243095fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 243195fab37eSRobert Watson { 243295fab37eSRobert Watson 243395fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 243495fab37eSRobert Watson &ipq->ipq_label); 243595fab37eSRobert Watson } 243695fab37eSRobert Watson 243795fab37eSRobert Watson void 243895fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 243995fab37eSRobert Watson { 244095fab37eSRobert Watson 244195fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 244295fab37eSRobert Watson &mbuf->m_pkthdr.label); 244395fab37eSRobert Watson } 244495fab37eSRobert Watson 244595fab37eSRobert Watson void 244695fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 244795fab37eSRobert Watson { 244895fab37eSRobert Watson 244995fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 245095fab37eSRobert Watson &mp->mnt_fslabel); 245195fab37eSRobert Watson } 245295fab37eSRobert Watson 245395fab37eSRobert Watson void 245495fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 245595fab37eSRobert Watson { 245695fab37eSRobert Watson 245795fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 245895fab37eSRobert Watson &mp->mnt_fslabel); 245995fab37eSRobert Watson } 246095fab37eSRobert Watson 246195fab37eSRobert Watson int 246295fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 246395fab37eSRobert Watson { 246495fab37eSRobert Watson int error; 246595fab37eSRobert Watson 246695fab37eSRobert Watson if (!mac_enforce_network) 246795fab37eSRobert Watson return (0); 246895fab37eSRobert Watson 246995fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 247095fab37eSRobert Watson &ifnet->if_label); 247195fab37eSRobert Watson 247295fab37eSRobert Watson return (error); 247395fab37eSRobert Watson } 247495fab37eSRobert Watson 247595fab37eSRobert Watson static int 247695fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 247795fab37eSRobert Watson { 247895fab37eSRobert Watson int error; 247995fab37eSRobert Watson 248095fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 248195fab37eSRobert Watson 248295fab37eSRobert Watson return (error); 248395fab37eSRobert Watson } 248495fab37eSRobert Watson 248595fab37eSRobert Watson int 248695fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 248795fab37eSRobert Watson { 248895fab37eSRobert Watson int error; 248995fab37eSRobert Watson 249095fab37eSRobert Watson if (!mac_enforce_process) 249195fab37eSRobert Watson return (0); 249295fab37eSRobert Watson 249395fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 249495fab37eSRobert Watson 249595fab37eSRobert Watson return (error); 249695fab37eSRobert Watson } 249795fab37eSRobert Watson 249895fab37eSRobert Watson int 249995fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 250095fab37eSRobert Watson { 250195fab37eSRobert Watson int error; 250295fab37eSRobert Watson 250395fab37eSRobert Watson if (!mac_enforce_network) 250495fab37eSRobert Watson return (0); 250595fab37eSRobert Watson 250695fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 250795fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 250895fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 250995fab37eSRobert Watson ifnet->if_unit); 251095fab37eSRobert Watson 251195fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 251295fab37eSRobert Watson &mbuf->m_pkthdr.label); 251395fab37eSRobert Watson 251495fab37eSRobert Watson return (error); 251595fab37eSRobert Watson } 251695fab37eSRobert Watson 251795fab37eSRobert Watson int 251895fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 251995fab37eSRobert Watson { 252095fab37eSRobert Watson int error; 252195fab37eSRobert Watson 252295fab37eSRobert Watson if (!mac_enforce_fs) 252395fab37eSRobert Watson return (0); 252495fab37eSRobert Watson 252595fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 252695fab37eSRobert Watson 252795fab37eSRobert Watson return (error); 252895fab37eSRobert Watson } 252995fab37eSRobert Watson 253095fab37eSRobert Watson int 253195fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 253295fab37eSRobert Watson void *data) 253395fab37eSRobert Watson { 253495fab37eSRobert Watson int error; 253595fab37eSRobert Watson 253695fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 253795fab37eSRobert Watson 253895fab37eSRobert Watson return (error); 253995fab37eSRobert Watson } 254095fab37eSRobert Watson 254195fab37eSRobert Watson int 254295fab37eSRobert Watson mac_check_pipe_op(struct ucred *cred, struct pipe *pipe, int op) 254395fab37eSRobert Watson { 254495fab37eSRobert Watson int error; 254595fab37eSRobert Watson 254695fab37eSRobert Watson MAC_CHECK(check_pipe_op, cred, pipe, pipe->pipe_label, op); 254795fab37eSRobert Watson 254895fab37eSRobert Watson return (error); 254995fab37eSRobert Watson } 255095fab37eSRobert Watson 255195fab37eSRobert Watson static int 255295fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 255395fab37eSRobert Watson struct label *newlabel) 255495fab37eSRobert Watson { 255595fab37eSRobert Watson int error; 255695fab37eSRobert Watson 255795fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 255895fab37eSRobert Watson 255995fab37eSRobert Watson return (error); 256095fab37eSRobert Watson } 256195fab37eSRobert Watson 256295fab37eSRobert Watson int 256395fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 256495fab37eSRobert Watson { 256595fab37eSRobert Watson int error; 256695fab37eSRobert Watson 2567b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2568b12baf55SRobert Watson 256995fab37eSRobert Watson if (!mac_enforce_process) 257095fab37eSRobert Watson return (0); 257195fab37eSRobert Watson 257295fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 257395fab37eSRobert Watson 257495fab37eSRobert Watson return (error); 257595fab37eSRobert Watson } 257695fab37eSRobert Watson 257795fab37eSRobert Watson int 257895fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 257995fab37eSRobert Watson { 258095fab37eSRobert Watson int error; 258195fab37eSRobert Watson 2582b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2583b12baf55SRobert Watson 258495fab37eSRobert Watson if (!mac_enforce_process) 258595fab37eSRobert Watson return (0); 258695fab37eSRobert Watson 258795fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 258895fab37eSRobert Watson 258995fab37eSRobert Watson return (error); 259095fab37eSRobert Watson } 259195fab37eSRobert Watson 259295fab37eSRobert Watson int 259395fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 259495fab37eSRobert Watson { 259595fab37eSRobert Watson int error; 259695fab37eSRobert Watson 2597b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2598b12baf55SRobert Watson 259995fab37eSRobert Watson if (!mac_enforce_process) 260095fab37eSRobert Watson return (0); 260195fab37eSRobert Watson 260295fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 260395fab37eSRobert Watson 260495fab37eSRobert Watson return (error); 260595fab37eSRobert Watson } 260695fab37eSRobert Watson 260795fab37eSRobert Watson int 260895fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 260995fab37eSRobert Watson struct sockaddr *sockaddr) 261095fab37eSRobert Watson { 261195fab37eSRobert Watson int error; 261295fab37eSRobert Watson 261395fab37eSRobert Watson if (!mac_enforce_socket) 261495fab37eSRobert Watson return (0); 261595fab37eSRobert Watson 261695fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 261795fab37eSRobert Watson sockaddr); 261895fab37eSRobert Watson 261995fab37eSRobert Watson return (error); 262095fab37eSRobert Watson } 262195fab37eSRobert Watson 262295fab37eSRobert Watson int 262395fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 262495fab37eSRobert Watson struct sockaddr *sockaddr) 262595fab37eSRobert Watson { 262695fab37eSRobert Watson int error; 262795fab37eSRobert Watson 262895fab37eSRobert Watson if (!mac_enforce_socket) 262995fab37eSRobert Watson return (0); 263095fab37eSRobert Watson 263195fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 263295fab37eSRobert Watson sockaddr); 263395fab37eSRobert Watson 263495fab37eSRobert Watson return (error); 263595fab37eSRobert Watson } 263695fab37eSRobert Watson 263795fab37eSRobert Watson int 2638d61198e4SRobert Watson mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2639d61198e4SRobert Watson { 2640d61198e4SRobert Watson int error; 2641d61198e4SRobert Watson 2642d61198e4SRobert Watson if (!mac_enforce_socket) 2643d61198e4SRobert Watson return (0); 2644d61198e4SRobert Watson 2645d61198e4SRobert Watson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2646d61198e4SRobert Watson &mbuf->m_pkthdr.label); 2647d61198e4SRobert Watson 2648d61198e4SRobert Watson return (error); 2649d61198e4SRobert Watson } 2650d61198e4SRobert Watson 2651d61198e4SRobert Watson int 265295fab37eSRobert Watson mac_check_socket_listen(struct ucred *cred, struct socket *socket) 265395fab37eSRobert Watson { 265495fab37eSRobert Watson int error; 265595fab37eSRobert Watson 265695fab37eSRobert Watson if (!mac_enforce_socket) 265795fab37eSRobert Watson return (0); 265895fab37eSRobert Watson 265995fab37eSRobert Watson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 266095fab37eSRobert Watson return (error); 266195fab37eSRobert Watson } 266295fab37eSRobert Watson 266395fab37eSRobert Watson static int 266495fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 266595fab37eSRobert Watson struct label *newlabel) 266695fab37eSRobert Watson { 266795fab37eSRobert Watson int error; 266895fab37eSRobert Watson 266995fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 267095fab37eSRobert Watson newlabel); 267195fab37eSRobert Watson 267295fab37eSRobert Watson return (error); 267395fab37eSRobert Watson } 267495fab37eSRobert Watson 267595fab37eSRobert Watson int 267695fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 267795fab37eSRobert Watson { 267895fab37eSRobert Watson int error; 267995fab37eSRobert Watson 268095fab37eSRobert Watson if (!mac_enforce_socket) 268195fab37eSRobert Watson return (0); 268295fab37eSRobert Watson 268395fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 268495fab37eSRobert Watson 268595fab37eSRobert Watson return (error); 268695fab37eSRobert Watson } 268795fab37eSRobert Watson 268895fab37eSRobert Watson int 268995fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 269095fab37eSRobert Watson struct ifnet *ifnet) 269195fab37eSRobert Watson { 269295fab37eSRobert Watson struct mac label; 269395fab37eSRobert Watson int error; 269495fab37eSRobert Watson 269595fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 269695fab37eSRobert Watson if (error) 269795fab37eSRobert Watson return (error); 269895fab37eSRobert Watson 269995fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 270095fab37eSRobert Watson } 270195fab37eSRobert Watson 270295fab37eSRobert Watson int 270395fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 270495fab37eSRobert Watson struct ifnet *ifnet) 270595fab37eSRobert Watson { 270695fab37eSRobert Watson struct mac newlabel; 270795fab37eSRobert Watson struct label intlabel; 270895fab37eSRobert Watson int error; 270995fab37eSRobert Watson 271095fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 271195fab37eSRobert Watson if (error) 271295fab37eSRobert Watson return (error); 271395fab37eSRobert Watson 271495fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 271595fab37eSRobert Watson if (error) 271695fab37eSRobert Watson return (error); 271795fab37eSRobert Watson 271895fab37eSRobert Watson /* 271995fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 272095fab37eSRobert Watson * policies impose this check themselves if required by the 272195fab37eSRobert Watson * policy. Eventually, this should go away. 272295fab37eSRobert Watson */ 272395fab37eSRobert Watson error = suser_cred(cred, 0); 272495fab37eSRobert Watson if (error) 272595fab37eSRobert Watson goto out; 272695fab37eSRobert Watson 272795fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 272895fab37eSRobert Watson &intlabel); 272995fab37eSRobert Watson if (error) 273095fab37eSRobert Watson goto out; 273195fab37eSRobert Watson 273295fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 273395fab37eSRobert Watson 273495fab37eSRobert Watson out: 273595fab37eSRobert Watson mac_destroy_temp(&intlabel); 273695fab37eSRobert Watson return (error); 273795fab37eSRobert Watson } 273895fab37eSRobert Watson 273995fab37eSRobert Watson void 274095fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 274195fab37eSRobert Watson { 274295fab37eSRobert Watson 274395fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 274495fab37eSRobert Watson } 274595fab37eSRobert Watson 274695fab37eSRobert Watson void 274795fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 274895fab37eSRobert Watson { 274995fab37eSRobert Watson 275095fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 275195fab37eSRobert Watson } 275295fab37eSRobert Watson 275395fab37eSRobert Watson static int 275495fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 275595fab37eSRobert Watson { 275695fab37eSRobert Watson int error; 275795fab37eSRobert Watson 275895fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 275995fab37eSRobert Watson 276095fab37eSRobert Watson return (error); 276195fab37eSRobert Watson } 276295fab37eSRobert Watson 276395fab37eSRobert Watson void 276495fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 276595fab37eSRobert Watson struct devfs_dirent *de) 276695fab37eSRobert Watson { 276795fab37eSRobert Watson 276895fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 276995fab37eSRobert Watson &de->de_label); 277095fab37eSRobert Watson } 277195fab37eSRobert Watson 277295fab37eSRobert Watson /* 277395fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 277495fab37eSRobert Watson */ 277595fab37eSRobert Watson void 277695fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 277795fab37eSRobert Watson struct vnode *child) 277895fab37eSRobert Watson { 277995fab37eSRobert Watson int error; 278095fab37eSRobert Watson 278195fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 278295fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 278395fab37eSRobert Watson 278495fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 278595fab37eSRobert Watson if (error) { 278695fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 278795fab37eSRobert Watson error); 278895fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 278995fab37eSRobert Watson } 279095fab37eSRobert Watson 279195fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 279295fab37eSRobert Watson &child->v_label); 279395fab37eSRobert Watson } 279495fab37eSRobert Watson 279595fab37eSRobert Watson int 279695fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 279795fab37eSRobert Watson struct mac *extmac) 279895fab37eSRobert Watson { 279995fab37eSRobert Watson struct label intlabel; 280095fab37eSRobert Watson int error; 280195fab37eSRobert Watson 280295fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 280395fab37eSRobert Watson if (error) 280495fab37eSRobert Watson return (error); 280595fab37eSRobert Watson 280695fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 280795fab37eSRobert Watson if (error) { 280895fab37eSRobert Watson mac_destroy_temp(&intlabel); 280995fab37eSRobert Watson return (error); 281095fab37eSRobert Watson } 281195fab37eSRobert Watson 281295fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 281395fab37eSRobert Watson 281495fab37eSRobert Watson mac_destroy_temp(&intlabel); 281595fab37eSRobert Watson return (0); 281695fab37eSRobert Watson } 281795fab37eSRobert Watson 281895fab37eSRobert Watson int 281995fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 282095fab37eSRobert Watson { 282195fab37eSRobert Watson int error; 282295fab37eSRobert Watson 282395fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 282495fab37eSRobert Watson if (error) 282595fab37eSRobert Watson return (error); 282695fab37eSRobert Watson 282795fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 282895fab37eSRobert Watson 282995fab37eSRobert Watson return (0); 283095fab37eSRobert Watson } 283195fab37eSRobert Watson 283295fab37eSRobert Watson int 283395fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 283495fab37eSRobert Watson struct mac *extmac) 283595fab37eSRobert Watson { 283695fab37eSRobert Watson 283795fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 283895fab37eSRobert Watson } 283995fab37eSRobert Watson 284095fab37eSRobert Watson int 284195fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 284295fab37eSRobert Watson struct mac *extmac) 284395fab37eSRobert Watson { 284495fab37eSRobert Watson 284595fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 284695fab37eSRobert Watson } 284795fab37eSRobert Watson 284895fab37eSRobert Watson /* 284995fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 285095fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 285195fab37eSRobert Watson * extended attributes. 285295fab37eSRobert Watson */ 285395fab37eSRobert Watson int 285495fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 285595fab37eSRobert Watson { 285695fab37eSRobert Watson struct vnode *vp = ap->a_vp; 285795fab37eSRobert Watson struct label *intlabel = ap->a_label; 285895fab37eSRobert Watson struct mac extmac; 285995fab37eSRobert Watson int error; 286095fab37eSRobert Watson 286195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 286295fab37eSRobert Watson 286395fab37eSRobert Watson /* 286495fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 286595fab37eSRobert Watson * Be particularly careful to avoid race conditions, 286695fab37eSRobert Watson * consistency problems, and stability problems when 286795fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 286895fab37eSRobert Watson * the ability to write multiple EAs on the same file in 286995fab37eSRobert Watson * a single transaction, which the current EA interface 287095fab37eSRobert Watson * does not provide. 287195fab37eSRobert Watson */ 287295fab37eSRobert Watson 287395fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 287495fab37eSRobert Watson if (error) 287595fab37eSRobert Watson return (error); 287695fab37eSRobert Watson 287795fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 287895fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 287995fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 288095fab37eSRobert Watson if (error) 288195fab37eSRobert Watson return (error); 288295fab37eSRobert Watson 288395fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 288495fab37eSRobert Watson 2885e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 288695fab37eSRobert Watson 288795fab37eSRobert Watson return (0); 288895fab37eSRobert Watson } 288995fab37eSRobert Watson 289095fab37eSRobert Watson static int 289195fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 289295fab37eSRobert Watson { 289395fab37eSRobert Watson int error; 289495fab37eSRobert Watson 289595fab37eSRobert Watson if (vp->v_mount == NULL) { 289695fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 289795fab37eSRobert Watson if (vp->v_tag != VT_NON) 289895fab37eSRobert Watson printf("vn_setlabel: null v_mount with non-VT_NON\n"); 289995fab37eSRobert Watson return (EBADF); 290095fab37eSRobert Watson } 290195fab37eSRobert Watson 290295fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 290395fab37eSRobert Watson return (EOPNOTSUPP); 290495fab37eSRobert Watson 290595fab37eSRobert Watson /* 290695fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 290795fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 290895fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 290995fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 291095fab37eSRobert Watson */ 291195fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 291295fab37eSRobert Watson if (error) 291395fab37eSRobert Watson return (error); 291495fab37eSRobert Watson 291595fab37eSRobert Watson /* 291695fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 291795fab37eSRobert Watson * decisions about who is and is not able to modify labels 291895fab37eSRobert Watson * and protections on files. This might not be right. We can't 291995fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 292095fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 292195fab37eSRobert Watson */ 292295fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 292395fab37eSRobert Watson if (error) 292495fab37eSRobert Watson return (error); 292595fab37eSRobert Watson 292695fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 292795fab37eSRobert Watson if (error) 292895fab37eSRobert Watson return (error); 292995fab37eSRobert Watson 293095fab37eSRobert Watson return (0); 293195fab37eSRobert Watson } 293295fab37eSRobert Watson 293395fab37eSRobert Watson /* 293495fab37eSRobert Watson * MPSAFE 293595fab37eSRobert Watson */ 293695fab37eSRobert Watson int 293795fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 293895fab37eSRobert Watson { 293995fab37eSRobert Watson struct mac extmac; 294095fab37eSRobert Watson int error; 294195fab37eSRobert Watson 294295fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 294395fab37eSRobert Watson if (error == 0) 294495fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 294595fab37eSRobert Watson 294695fab37eSRobert Watson return (error); 294795fab37eSRobert Watson } 294895fab37eSRobert Watson 294995fab37eSRobert Watson /* 295095fab37eSRobert Watson * MPSAFE 295195fab37eSRobert Watson * 295295fab37eSRobert Watson * XXX: Needs to be re-written for proc locking. 295395fab37eSRobert Watson */ 295495fab37eSRobert Watson int 295595fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 295695fab37eSRobert Watson { 295795fab37eSRobert Watson struct ucred *newcred, *oldcred; 295895fab37eSRobert Watson struct proc *p; 295995fab37eSRobert Watson struct mac extmac; 296095fab37eSRobert Watson struct label intlabel; 296195fab37eSRobert Watson int error; 296295fab37eSRobert Watson 296395fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 296495fab37eSRobert Watson if (error) 296595fab37eSRobert Watson return (error); 296695fab37eSRobert Watson 296795fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 296895fab37eSRobert Watson if (error) 296995fab37eSRobert Watson return (error); 297095fab37eSRobert Watson 297195fab37eSRobert Watson newcred = crget(); 297295fab37eSRobert Watson 297395fab37eSRobert Watson p = td->td_proc; 297495fab37eSRobert Watson PROC_LOCK(p); 297595fab37eSRobert Watson oldcred = p->p_ucred; 297695fab37eSRobert Watson 297795fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 297895fab37eSRobert Watson if (error) { 297995fab37eSRobert Watson PROC_UNLOCK(p); 298095fab37eSRobert Watson mac_destroy_temp(&intlabel); 298195fab37eSRobert Watson crfree(newcred); 298295fab37eSRobert Watson return (error); 298395fab37eSRobert Watson } 298495fab37eSRobert Watson 298595fab37eSRobert Watson setsugid(p); 298695fab37eSRobert Watson crcopy(newcred, oldcred); 298795fab37eSRobert Watson PROC_UNLOCK(p); 298895fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 298995fab37eSRobert Watson 299095fab37eSRobert Watson PROC_LOCK(p); 299195fab37eSRobert Watson p->p_ucred = newcred; 299295fab37eSRobert Watson PROC_UNLOCK(p); 299395fab37eSRobert Watson crfree(oldcred); 299495fab37eSRobert Watson mac_destroy_temp(&intlabel); 299595fab37eSRobert Watson return (0); 299695fab37eSRobert Watson } 299795fab37eSRobert Watson 299895fab37eSRobert Watson /* 299995fab37eSRobert Watson * MPSAFE 300095fab37eSRobert Watson */ 300195fab37eSRobert Watson int 300295fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 300395fab37eSRobert Watson { 300495fab37eSRobert Watson struct file *fp; 300595fab37eSRobert Watson struct mac extmac; 300695fab37eSRobert Watson struct vnode *vp; 300795fab37eSRobert Watson struct pipe *pipe; 300895fab37eSRobert Watson int error; 300995fab37eSRobert Watson 301095fab37eSRobert Watson mtx_lock(&Giant); 301195fab37eSRobert Watson 301295fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 301395fab37eSRobert Watson if (error) 301495fab37eSRobert Watson goto out; 301595fab37eSRobert Watson 301695fab37eSRobert Watson switch (fp->f_type) { 301795fab37eSRobert Watson case DTYPE_FIFO: 301895fab37eSRobert Watson case DTYPE_VNODE: 301995fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 302095fab37eSRobert Watson 302195fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 302295fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 302395fab37eSRobert Watson if (error == 0) 302495fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 302595fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 302695fab37eSRobert Watson break; 302795fab37eSRobert Watson case DTYPE_PIPE: 302895fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 302995fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 303095fab37eSRobert Watson break; 303195fab37eSRobert Watson default: 303295fab37eSRobert Watson error = EINVAL; 303395fab37eSRobert Watson } 303495fab37eSRobert Watson 303595fab37eSRobert Watson if (error == 0) 303695fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 303795fab37eSRobert Watson 303895fab37eSRobert Watson fdrop(fp, td); 303995fab37eSRobert Watson 304095fab37eSRobert Watson out: 304195fab37eSRobert Watson mtx_unlock(&Giant); 304295fab37eSRobert Watson return (error); 304395fab37eSRobert Watson } 304495fab37eSRobert Watson 304595fab37eSRobert Watson /* 304695fab37eSRobert Watson * MPSAFE 304795fab37eSRobert Watson */ 304895fab37eSRobert Watson int 304995fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 305095fab37eSRobert Watson { 305195fab37eSRobert Watson struct nameidata nd; 305295fab37eSRobert Watson struct mac extmac; 305395fab37eSRobert Watson int error; 305495fab37eSRobert Watson 305595fab37eSRobert Watson mtx_lock(&Giant); 305695fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 305795fab37eSRobert Watson SCARG(uap, path_p), td); 305895fab37eSRobert Watson error = namei(&nd); 305995fab37eSRobert Watson if (error) 306095fab37eSRobert Watson goto out; 306195fab37eSRobert Watson 306295fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 306395fab37eSRobert Watson if (error == 0) 306495fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 306595fab37eSRobert Watson NDFREE(&nd, 0); 306695fab37eSRobert Watson if (error) 306795fab37eSRobert Watson goto out; 306895fab37eSRobert Watson 306995fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 307095fab37eSRobert Watson 307195fab37eSRobert Watson out: 307295fab37eSRobert Watson mtx_unlock(&Giant); 307395fab37eSRobert Watson return (error); 307495fab37eSRobert Watson } 307595fab37eSRobert Watson 307695fab37eSRobert Watson /* 307795fab37eSRobert Watson * MPSAFE 307895fab37eSRobert Watson */ 307995fab37eSRobert Watson int 308095fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 308195fab37eSRobert Watson { 308295fab37eSRobert Watson struct file *fp; 308395fab37eSRobert Watson struct mac extmac; 308495fab37eSRobert Watson struct label intlabel; 308595fab37eSRobert Watson struct mount *mp; 308695fab37eSRobert Watson struct vnode *vp; 308795fab37eSRobert Watson struct pipe *pipe; 308895fab37eSRobert Watson int error; 308995fab37eSRobert Watson 309095fab37eSRobert Watson mtx_lock(&Giant); 309195fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 309295fab37eSRobert Watson if (error) 309395fab37eSRobert Watson goto out1; 309495fab37eSRobert Watson 309595fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 309695fab37eSRobert Watson if (error) 309795fab37eSRobert Watson goto out2; 309895fab37eSRobert Watson 309995fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 310095fab37eSRobert Watson if (error) 310195fab37eSRobert Watson goto out2; 310295fab37eSRobert Watson 310395fab37eSRobert Watson switch (fp->f_type) { 310495fab37eSRobert Watson case DTYPE_FIFO: 310595fab37eSRobert Watson case DTYPE_VNODE: 310695fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 310795fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 310895fab37eSRobert Watson if (error != 0) 310995fab37eSRobert Watson break; 311095fab37eSRobert Watson 311195fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 311295fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 311395fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 311495fab37eSRobert Watson vn_finished_write(mp); 311595fab37eSRobert Watson mac_destroy_temp(&intlabel); 311695fab37eSRobert Watson break; 311795fab37eSRobert Watson case DTYPE_PIPE: 311895fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 311995fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 312095fab37eSRobert Watson break; 312195fab37eSRobert Watson default: 312295fab37eSRobert Watson error = EINVAL; 312395fab37eSRobert Watson } 312495fab37eSRobert Watson 312595fab37eSRobert Watson out2: 312695fab37eSRobert Watson fdrop(fp, td); 312795fab37eSRobert Watson out1: 312895fab37eSRobert Watson mtx_unlock(&Giant); 312995fab37eSRobert Watson return (error); 313095fab37eSRobert Watson } 313195fab37eSRobert Watson 313295fab37eSRobert Watson /* 313395fab37eSRobert Watson * MPSAFE 313495fab37eSRobert Watson */ 313595fab37eSRobert Watson int 313695fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 313795fab37eSRobert Watson { 313895fab37eSRobert Watson struct nameidata nd; 313995fab37eSRobert Watson struct mac extmac; 314095fab37eSRobert Watson struct label intlabel; 314195fab37eSRobert Watson struct mount *mp; 314295fab37eSRobert Watson int error; 314395fab37eSRobert Watson 314495fab37eSRobert Watson mtx_lock(&Giant); 314595fab37eSRobert Watson 314695fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 314795fab37eSRobert Watson if (error) 314895fab37eSRobert Watson goto out; 314995fab37eSRobert Watson 315095fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 315195fab37eSRobert Watson if (error) 315295fab37eSRobert Watson goto out; 315395fab37eSRobert Watson 315495fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 315595fab37eSRobert Watson SCARG(uap, path_p), td); 315695fab37eSRobert Watson error = namei(&nd); 315795fab37eSRobert Watson if (error) 315895fab37eSRobert Watson goto out2; 315995fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 316095fab37eSRobert Watson if (error) 316195fab37eSRobert Watson goto out2; 316295fab37eSRobert Watson 316395fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 316495fab37eSRobert Watson 316595fab37eSRobert Watson vn_finished_write(mp); 316695fab37eSRobert Watson out2: 316795fab37eSRobert Watson mac_destroy_temp(&intlabel); 316895fab37eSRobert Watson NDFREE(&nd, 0); 316995fab37eSRobert Watson out: 317095fab37eSRobert Watson mtx_unlock(&Giant); 317195fab37eSRobert Watson return (error); 317295fab37eSRobert Watson } 317395fab37eSRobert Watson 317495fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 317595fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 317695fab37eSRobert Watson 317795fab37eSRobert Watson #else /* !MAC */ 31787bc82500SRobert Watson 31797bc82500SRobert Watson int 31807bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 31817bc82500SRobert Watson { 31827bc82500SRobert Watson 31837bc82500SRobert Watson return (ENOSYS); 31847bc82500SRobert Watson } 31857bc82500SRobert Watson 31867bc82500SRobert Watson int 31877bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 31887bc82500SRobert Watson { 31897bc82500SRobert Watson 31907bc82500SRobert Watson return (ENOSYS); 31917bc82500SRobert Watson } 31927bc82500SRobert Watson 31937bc82500SRobert Watson int 31947bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 31957bc82500SRobert Watson { 31967bc82500SRobert Watson 31977bc82500SRobert Watson return (ENOSYS); 31987bc82500SRobert Watson } 31997bc82500SRobert Watson 32007bc82500SRobert Watson int 32017bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 32027bc82500SRobert Watson { 32037bc82500SRobert Watson 32047bc82500SRobert Watson return (ENOSYS); 32057bc82500SRobert Watson } 32067bc82500SRobert Watson 32077bc82500SRobert Watson int 32087bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 32097bc82500SRobert Watson { 32107bc82500SRobert Watson 32117bc82500SRobert Watson return (ENOSYS); 32127bc82500SRobert Watson } 32137bc82500SRobert Watson 32147bc82500SRobert Watson int 32157bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 32167bc82500SRobert Watson { 32177bc82500SRobert Watson 32187bc82500SRobert Watson return (ENOSYS); 32197bc82500SRobert Watson } 322095fab37eSRobert Watson 322195fab37eSRobert Watson #endif /* !MAC */ 3222