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_OP: 75995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_op = 76095fab37eSRobert Watson mpe->mpe_function; 76195fab37eSRobert Watson break; 76295fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 76395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 76495fab37eSRobert Watson mpe->mpe_function; 76595fab37eSRobert Watson break; 76695fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 76795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 76895fab37eSRobert Watson mpe->mpe_function; 76995fab37eSRobert Watson break; 77095fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 77195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 77295fab37eSRobert Watson mpe->mpe_function; 77395fab37eSRobert Watson break; 77495fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 77595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 77695fab37eSRobert Watson mpe->mpe_function; 77795fab37eSRobert Watson break; 77895fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 77995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 78095fab37eSRobert Watson mpe->mpe_function; 78195fab37eSRobert Watson break; 78295fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 78395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 78495fab37eSRobert Watson mpe->mpe_function; 78595fab37eSRobert Watson break; 78695fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 78795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 78895fab37eSRobert Watson mpe->mpe_function; 78995fab37eSRobert Watson break; 79095fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 79195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 79295fab37eSRobert Watson mpe->mpe_function; 79395fab37eSRobert Watson break; 79495fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 79595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 79695fab37eSRobert Watson mpe->mpe_function; 79795fab37eSRobert Watson break; 79895fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 79995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 80095fab37eSRobert Watson mpe->mpe_function; 80195fab37eSRobert Watson break; 80295fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 80395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 80495fab37eSRobert Watson mpe->mpe_function; 80595fab37eSRobert Watson break; 80695fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 80795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 80895fab37eSRobert Watson mpe->mpe_function; 80995fab37eSRobert Watson break; 81095fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 81195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 81295fab37eSRobert Watson mpe->mpe_function; 81395fab37eSRobert Watson break; 81495fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 81595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 81695fab37eSRobert Watson mpe->mpe_function; 81795fab37eSRobert Watson break; 81895fab37eSRobert Watson /* 81995fab37eSRobert Watson default: 82095fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 82195fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 82295fab37eSRobert Watson return (EINVAL); 82395fab37eSRobert Watson */ 82495fab37eSRobert Watson } 82595fab37eSRobert Watson } 82695fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 82795fab37eSRobert Watson if (mac_policy_list_busy > 0) { 82895fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 82995fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 83095fab37eSRobert Watson mpc->mpc_ops = NULL; 83195fab37eSRobert Watson return (EBUSY); 83295fab37eSRobert Watson } 83395fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 83495fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 83595fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 83695fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 83795fab37eSRobert Watson mpc->mpc_ops = NULL; 83895fab37eSRobert Watson return (EEXIST); 83995fab37eSRobert Watson } 84095fab37eSRobert Watson } 84195fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 84295fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 84395fab37eSRobert Watson if (slot == 0) { 84495fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 84595fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 84695fab37eSRobert Watson mpc->mpc_ops = NULL; 84795fab37eSRobert Watson return (ENOMEM); 84895fab37eSRobert Watson } 84995fab37eSRobert Watson slot--; 85095fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 85195fab37eSRobert Watson *mpc->mpc_field_off = slot; 85295fab37eSRobert Watson } 85395fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 85495fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 85595fab37eSRobert Watson 85695fab37eSRobert Watson /* Per-policy initialization. */ 85795fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 85895fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 85995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 86095fab37eSRobert Watson 86195fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 86295fab37eSRobert Watson mpc->mpc_name); 86395fab37eSRobert Watson 86495fab37eSRobert Watson return (0); 86595fab37eSRobert Watson } 86695fab37eSRobert Watson 86795fab37eSRobert Watson static int 86895fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 86995fab37eSRobert Watson { 87095fab37eSRobert Watson 87195fab37eSRobert Watson #if 0 87295fab37eSRobert Watson /* 87395fab37eSRobert Watson * Don't allow unloading modules with private data. 87495fab37eSRobert Watson */ 87595fab37eSRobert Watson if (mpc->mpc_field_off != NULL) 87695fab37eSRobert Watson return (EBUSY); 87795fab37eSRobert Watson #endif 87895fab37eSRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) 87995fab37eSRobert Watson return (EBUSY); 88095fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 88195fab37eSRobert Watson if (mac_policy_list_busy > 0) { 88295fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 88395fab37eSRobert Watson return (EBUSY); 88495fab37eSRobert Watson } 88595fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 88695fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 88795fab37eSRobert Watson 88895fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 88995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 89095fab37eSRobert Watson 89195fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89295fab37eSRobert Watson mpc->mpc_ops = NULL; 89395fab37eSRobert Watson 89495fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 89595fab37eSRobert Watson mpc->mpc_name); 89695fab37eSRobert Watson 89795fab37eSRobert Watson return (0); 89895fab37eSRobert Watson } 89995fab37eSRobert Watson 90095fab37eSRobert Watson /* 90195fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 90295fab37eSRobert Watson * value with the higher precedence. 90395fab37eSRobert Watson */ 90495fab37eSRobert Watson static int 90595fab37eSRobert Watson error_select(int error1, int error2) 90695fab37eSRobert Watson { 90795fab37eSRobert Watson 90895fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 90995fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 91095fab37eSRobert Watson return (EDEADLK); 91195fab37eSRobert Watson 91295fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 91395fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 91495fab37eSRobert Watson return (EINVAL); 91595fab37eSRobert Watson 91695fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 91795fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 91895fab37eSRobert Watson return (ESRCH); 91995fab37eSRobert Watson 92095fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 92195fab37eSRobert Watson return (ENOENT); 92295fab37eSRobert Watson 92395fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 92495fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 92595fab37eSRobert Watson return (EACCES); 92695fab37eSRobert Watson 92795fab37eSRobert Watson /* Precedence goes to privilege. */ 92895fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 92995fab37eSRobert Watson return (EPERM); 93095fab37eSRobert Watson 93195fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 93295fab37eSRobert Watson if (error1 != 0) 93395fab37eSRobert Watson return (error1); 93495fab37eSRobert Watson return (error2); 93595fab37eSRobert Watson } 93695fab37eSRobert Watson 93795fab37eSRobert Watson void 93895fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 93995fab37eSRobert Watson { 94095fab37eSRobert Watson 94195fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 94295fab37eSRobert Watson } 94395fab37eSRobert Watson 94495fab37eSRobert Watson void 94595fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 94695fab37eSRobert Watson { 94795fab37eSRobert Watson 94895fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 94995fab37eSRobert Watson } 95095fab37eSRobert Watson 95195fab37eSRobert Watson /* 95295fab37eSRobert Watson * Support callout for policies that manage their own externalization 95395fab37eSRobert Watson * using extended attributes. 95495fab37eSRobert Watson */ 95595fab37eSRobert Watson static int 95695fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 95795fab37eSRobert Watson { 95895fab37eSRobert Watson int error; 95995fab37eSRobert Watson 96095fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 96195fab37eSRobert Watson &mp->mnt_fslabel); 96295fab37eSRobert Watson 96395fab37eSRobert Watson return (error); 96495fab37eSRobert Watson } 96595fab37eSRobert Watson 96695fab37eSRobert Watson /* 96795fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 96895fab37eSRobert Watson * vnode. 96995fab37eSRobert Watson */ 97095fab37eSRobert Watson static int 97195fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 97295fab37eSRobert Watson { 97395fab37eSRobert Watson int error; 97495fab37eSRobert Watson 97595fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 97695fab37eSRobert Watson 97795fab37eSRobert Watson return (error); 97895fab37eSRobert Watson } 97995fab37eSRobert Watson 98095fab37eSRobert Watson /* 98195fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 98295fab37eSRobert Watson * the mountpoint. 98395fab37eSRobert Watson */ 98495fab37eSRobert Watson void 98595fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 98695fab37eSRobert Watson { 98795fab37eSRobert Watson 98895fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 98995fab37eSRobert Watson &mp->mnt_fslabel); 99095fab37eSRobert Watson 991e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 99295fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 993e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 99495fab37eSRobert Watson } 99595fab37eSRobert Watson 99695fab37eSRobert Watson /* 99795fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 99895fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 99995fab37eSRobert Watson * extended attributes. 100095fab37eSRobert Watson */ 100195fab37eSRobert Watson int 100295fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 100395fab37eSRobert Watson { 100495fab37eSRobert Watson struct vnode *vp = ap->a_vp; 100595fab37eSRobert Watson struct mac extmac; 100695fab37eSRobert Watson int buflen, error; 100795fab37eSRobert Watson 100895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 100995fab37eSRobert Watson 101095fab37eSRobert Watson /* 101195fab37eSRobert Watson * Call out to external policies first. Order doesn't really 101295fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 101395fab37eSRobert Watson */ 101495fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 101595fab37eSRobert Watson if (error) 101695fab37eSRobert Watson return (error); 101795fab37eSRobert Watson 101895fab37eSRobert Watson buflen = sizeof(extmac); 101995fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 102095fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 102195fab37eSRobert Watson (char *)&extmac, curthread); 102295fab37eSRobert Watson switch (error) { 102395fab37eSRobert Watson case 0: 102495fab37eSRobert Watson /* Got it */ 102595fab37eSRobert Watson break; 102695fab37eSRobert Watson 102795fab37eSRobert Watson case ENOATTR: 102895fab37eSRobert Watson /* 102995fab37eSRobert Watson * Use the label from the mount point. 103095fab37eSRobert Watson */ 103195fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 103295fab37eSRobert Watson return (0); 103395fab37eSRobert Watson 103495fab37eSRobert Watson case EOPNOTSUPP: 103595fab37eSRobert Watson default: 103695fab37eSRobert Watson /* Fail horribly. */ 103795fab37eSRobert Watson return (error); 103895fab37eSRobert Watson } 103995fab37eSRobert Watson 104095fab37eSRobert Watson if (buflen != sizeof(extmac)) 104195fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 104295fab37eSRobert Watson if (error == 0) 104395fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 104495fab37eSRobert Watson if (error == 0) 1045e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 104695fab37eSRobert Watson else { 104795fab37eSRobert Watson struct vattr va; 104895fab37eSRobert Watson 104995fab37eSRobert Watson printf("Corrupted label on %s", 105095fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 105195fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 105295fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 105395fab37eSRobert Watson if (mac_debug_label_fallback) { 105495fab37eSRobert Watson printf(", falling back.\n"); 105595fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 105695fab37eSRobert Watson error = 0; 105795fab37eSRobert Watson } else { 105895fab37eSRobert Watson printf(".\n"); 105995fab37eSRobert Watson error = EPERM; 106095fab37eSRobert Watson } 106195fab37eSRobert Watson } 106295fab37eSRobert Watson 106395fab37eSRobert Watson return (error); 106495fab37eSRobert Watson } 106595fab37eSRobert Watson 106695fab37eSRobert Watson /* 106795fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 106895fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 106995fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 107095fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 107195fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 107295fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 107395fab37eSRobert Watson * all vnodes. 107495fab37eSRobert Watson */ 107595fab37eSRobert Watson static int 107695fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 107795fab37eSRobert Watson { 107895fab37eSRobert Watson int error; 107995fab37eSRobert Watson 108095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 108195fab37eSRobert Watson 108295fab37eSRobert Watson if (vp->v_mount == NULL) { 108395fab37eSRobert Watson /* 108495fab37eSRobert Watson Eventually, we probably want to special-case refreshing 108595fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 108695fab37eSRobert Watson that case might be handled here. 108795fab37eSRobert Watson 108895fab37eSRobert Watson mac_update_vnode_deadfs(vp); 108995fab37eSRobert Watson return (0); 109095fab37eSRobert Watson */ 109195fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 109295fab37eSRobert Watson if (vp->v_tag != VT_NON) 109395fab37eSRobert Watson printf( 109495fab37eSRobert Watson "vn_refreshlabel: null v_mount with non-VT_NON\n"); 109595fab37eSRobert Watson return (EBADF); 109695fab37eSRobert Watson } 109795fab37eSRobert Watson 1098e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 109995fab37eSRobert Watson mac_vnode_label_cache_hits++; 110095fab37eSRobert Watson return (0); 110195fab37eSRobert Watson } else 110295fab37eSRobert Watson mac_vnode_label_cache_misses++; 110395fab37eSRobert Watson 110495fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 110595fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 110695fab37eSRobert Watson return (0); 110795fab37eSRobert Watson } 110895fab37eSRobert Watson 110995fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 111095fab37eSRobert Watson switch (error) { 111195fab37eSRobert Watson case EOPNOTSUPP: 111295fab37eSRobert Watson /* 111395fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 111495fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 111595fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 111695fab37eSRobert Watson * about doing this. 111795fab37eSRobert Watson */ 111895fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 111995fab37eSRobert Watson error = 0; 112095fab37eSRobert Watson default: 112195fab37eSRobert Watson return (error); 112295fab37eSRobert Watson } 112395fab37eSRobert Watson } 112495fab37eSRobert Watson 112595fab37eSRobert Watson /* 112695fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 112795fab37eSRobert Watson * function must be called after EA service is available for the vnode, 112895fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 112995fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 113095fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 113195fab37eSRobert Watson */ 113295fab37eSRobert Watson int 113395fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 113495fab37eSRobert Watson { 113595fab37eSRobert Watson struct mac extmac; 113695fab37eSRobert Watson int error; 113795fab37eSRobert Watson 1138e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 113995fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 114095fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 114195fab37eSRobert Watson } else { 114295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 114395fab37eSRobert Watson if (error) 114495fab37eSRobert Watson return (error); 114595fab37eSRobert Watson 114695fab37eSRobert Watson /* 114795fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 114895fab37eSRobert Watson * disk. If we fail, return a failure to abort the 114995fab37eSRobert Watson * create operation. Really, this failure shouldn't 115095fab37eSRobert Watson * happen except in fairly unusual circumstances (out 115195fab37eSRobert Watson * of disk, etc). 115295fab37eSRobert Watson */ 115395fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 115495fab37eSRobert Watson 115595fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 115695fab37eSRobert Watson if (error) 115795fab37eSRobert Watson return (error); 115895fab37eSRobert Watson 115995fab37eSRobert Watson /* 116095fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 116195fab37eSRobert Watson * directly manage their extended attributes. 116295fab37eSRobert Watson */ 116395fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 116495fab37eSRobert Watson if (error) 116595fab37eSRobert Watson return (error); 116695fab37eSRobert Watson 116795fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 116895fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 116995fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 117095fab37eSRobert Watson if (error == 0) 1171e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 117295fab37eSRobert Watson else { 117395fab37eSRobert Watson #if 0 117495fab37eSRobert Watson /* 117595fab37eSRobert Watson * In theory, we could have fall-back behavior here. 117695fab37eSRobert Watson * It would probably be incorrect. 117795fab37eSRobert Watson */ 117895fab37eSRobert Watson #endif 117995fab37eSRobert Watson return (error); 118095fab37eSRobert Watson } 118195fab37eSRobert Watson } 118295fab37eSRobert Watson 118395fab37eSRobert Watson return (0); 118495fab37eSRobert Watson } 118595fab37eSRobert Watson 118695fab37eSRobert Watson void 118795fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 118895fab37eSRobert Watson { 118995fab37eSRobert Watson int error; 119095fab37eSRobert Watson 119195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 119295fab37eSRobert Watson 119395fab37eSRobert Watson error = vn_refreshlabel(vp, old); 119495fab37eSRobert Watson if (error) { 119595fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 119695fab37eSRobert Watson error); 119795fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 119895fab37eSRobert Watson } 119995fab37eSRobert Watson 120095fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 120195fab37eSRobert Watson } 120295fab37eSRobert Watson 120395fab37eSRobert Watson int 120495fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 120595fab37eSRobert Watson { 120695fab37eSRobert Watson int error, result; 120795fab37eSRobert Watson 120895fab37eSRobert Watson error = vn_refreshlabel(vp, old); 120995fab37eSRobert Watson if (error) 121095fab37eSRobert Watson return (error); 121195fab37eSRobert Watson 121295fab37eSRobert Watson result = 0; 121395fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 121495fab37eSRobert Watson 121595fab37eSRobert Watson return (result); 121695fab37eSRobert Watson } 121795fab37eSRobert Watson 121895fab37eSRobert Watson static void 121995fab37eSRobert Watson mac_init_label(struct label *label) 122095fab37eSRobert Watson { 122195fab37eSRobert Watson 122295fab37eSRobert Watson bzero(label, sizeof(*label)); 122395fab37eSRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 122495fab37eSRobert Watson } 122595fab37eSRobert Watson 122695fab37eSRobert Watson static void 122795fab37eSRobert Watson mac_init_structmac(struct mac *mac) 122895fab37eSRobert Watson { 122995fab37eSRobert Watson 123095fab37eSRobert Watson bzero(mac, sizeof(*mac)); 123195fab37eSRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 123295fab37eSRobert Watson } 123395fab37eSRobert Watson 123495fab37eSRobert Watson static void 123595fab37eSRobert Watson mac_destroy_label(struct label *label) 123695fab37eSRobert Watson { 123795fab37eSRobert Watson 123895fab37eSRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 123995fab37eSRobert Watson ("destroying uninitialized label")); 124095fab37eSRobert Watson 124195fab37eSRobert Watson bzero(label, sizeof(*label)); 124295fab37eSRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 124395fab37eSRobert Watson } 124495fab37eSRobert Watson 124595fab37eSRobert Watson int 124695fab37eSRobert Watson mac_init_mbuf(struct mbuf *m, int how) 124795fab37eSRobert Watson { 124895fab37eSRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 124995fab37eSRobert Watson 125095fab37eSRobert Watson /* "how" is one of M_(TRY|DONT)WAIT */ 125195fab37eSRobert Watson mac_init_label(&m->m_pkthdr.label); 125295fab37eSRobert Watson MAC_PERFORM(init_mbuf, m, how, &m->m_pkthdr.label); 1253f050add5SRobert Watson #ifdef MAC_DEBUG 125495fab37eSRobert Watson atomic_add_int(&nmacmbufs, 1); 1255f050add5SRobert Watson #endif 125695fab37eSRobert Watson return (0); 125795fab37eSRobert Watson } 125895fab37eSRobert Watson 125995fab37eSRobert Watson void 126095fab37eSRobert Watson mac_destroy_mbuf(struct mbuf *m) 126195fab37eSRobert Watson { 126295fab37eSRobert Watson 126395fab37eSRobert Watson MAC_PERFORM(destroy_mbuf, m, &m->m_pkthdr.label); 126495fab37eSRobert Watson mac_destroy_label(&m->m_pkthdr.label); 1265f050add5SRobert Watson #ifdef MAC_DEBUG 126695fab37eSRobert Watson atomic_subtract_int(&nmacmbufs, 1); 1267f050add5SRobert Watson #endif 126895fab37eSRobert Watson } 126995fab37eSRobert Watson 127095fab37eSRobert Watson void 127195fab37eSRobert Watson mac_init_cred(struct ucred *cr) 127295fab37eSRobert Watson { 127395fab37eSRobert Watson 127495fab37eSRobert Watson mac_init_label(&cr->cr_label); 127595fab37eSRobert Watson MAC_PERFORM(init_cred, cr, &cr->cr_label); 1276f050add5SRobert Watson #ifdef MAC_DEBUG 127795fab37eSRobert Watson atomic_add_int(&nmaccreds, 1); 1278f050add5SRobert Watson #endif 127995fab37eSRobert Watson } 128095fab37eSRobert Watson 128195fab37eSRobert Watson void 128295fab37eSRobert Watson mac_destroy_cred(struct ucred *cr) 128395fab37eSRobert Watson { 128495fab37eSRobert Watson 128595fab37eSRobert Watson MAC_PERFORM(destroy_cred, cr, &cr->cr_label); 128695fab37eSRobert Watson mac_destroy_label(&cr->cr_label); 1287f050add5SRobert Watson #ifdef MAC_DEBUG 128895fab37eSRobert Watson atomic_subtract_int(&nmaccreds, 1); 1289f050add5SRobert Watson #endif 129095fab37eSRobert Watson } 129195fab37eSRobert Watson 129295fab37eSRobert Watson void 129395fab37eSRobert Watson mac_init_ifnet(struct ifnet *ifp) 129495fab37eSRobert Watson { 129595fab37eSRobert Watson 129695fab37eSRobert Watson mac_init_label(&ifp->if_label); 129795fab37eSRobert Watson MAC_PERFORM(init_ifnet, ifp, &ifp->if_label); 1298f050add5SRobert Watson #ifdef MAC_DEBUG 129995fab37eSRobert Watson atomic_add_int(&nmacifnets, 1); 1300f050add5SRobert Watson #endif 130195fab37eSRobert Watson } 130295fab37eSRobert Watson 130395fab37eSRobert Watson void 130495fab37eSRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 130595fab37eSRobert Watson { 130695fab37eSRobert Watson 130795fab37eSRobert Watson MAC_PERFORM(destroy_ifnet, ifp, &ifp->if_label); 130895fab37eSRobert Watson mac_destroy_label(&ifp->if_label); 1309f050add5SRobert Watson #ifdef MAC_DEBUG 131095fab37eSRobert Watson atomic_subtract_int(&nmacifnets, 1); 1311f050add5SRobert Watson #endif 131295fab37eSRobert Watson } 131395fab37eSRobert Watson 131495fab37eSRobert Watson void 131595fab37eSRobert Watson mac_init_ipq(struct ipq *ipq) 131695fab37eSRobert Watson { 131795fab37eSRobert Watson 131895fab37eSRobert Watson mac_init_label(&ipq->ipq_label); 131995fab37eSRobert Watson MAC_PERFORM(init_ipq, ipq, &ipq->ipq_label); 1320f050add5SRobert Watson #ifdef MAC_DEBUG 132195fab37eSRobert Watson atomic_add_int(&nmacipqs, 1); 1322f050add5SRobert Watson #endif 132395fab37eSRobert Watson } 132495fab37eSRobert Watson 132595fab37eSRobert Watson void 132695fab37eSRobert Watson mac_destroy_ipq(struct ipq *ipq) 132795fab37eSRobert Watson { 132895fab37eSRobert Watson 132995fab37eSRobert Watson MAC_PERFORM(destroy_ipq, ipq, &ipq->ipq_label); 133095fab37eSRobert Watson mac_destroy_label(&ipq->ipq_label); 1331f050add5SRobert Watson #ifdef MAC_DEBUG 133295fab37eSRobert Watson atomic_subtract_int(&nmacipqs, 1); 1333f050add5SRobert Watson #endif 133495fab37eSRobert Watson } 133595fab37eSRobert Watson 133695fab37eSRobert Watson void 133795fab37eSRobert Watson mac_init_socket(struct socket *socket) 133895fab37eSRobert Watson { 133995fab37eSRobert Watson 134095fab37eSRobert Watson mac_init_label(&socket->so_label); 134195fab37eSRobert Watson mac_init_label(&socket->so_peerlabel); 134295fab37eSRobert Watson MAC_PERFORM(init_socket, socket, &socket->so_label, 134395fab37eSRobert Watson &socket->so_peerlabel); 1344f050add5SRobert Watson #ifdef MAC_DEBUG 134595fab37eSRobert Watson atomic_add_int(&nmacsockets, 1); 1346f050add5SRobert Watson #endif 134795fab37eSRobert Watson } 134895fab37eSRobert Watson 134995fab37eSRobert Watson void 135095fab37eSRobert Watson mac_destroy_socket(struct socket *socket) 135195fab37eSRobert Watson { 135295fab37eSRobert Watson 135395fab37eSRobert Watson MAC_PERFORM(destroy_socket, socket, &socket->so_label, 135495fab37eSRobert Watson &socket->so_peerlabel); 135595fab37eSRobert Watson mac_destroy_label(&socket->so_label); 135695fab37eSRobert Watson mac_destroy_label(&socket->so_peerlabel); 1357f050add5SRobert Watson #ifdef MAC_DEBUG 135895fab37eSRobert Watson atomic_subtract_int(&nmacsockets, 1); 1359f050add5SRobert Watson #endif 136095fab37eSRobert Watson } 136195fab37eSRobert Watson 136295fab37eSRobert Watson void 136395fab37eSRobert Watson mac_init_pipe(struct pipe *pipe) 136495fab37eSRobert Watson { 136595fab37eSRobert Watson struct label *label; 136695fab37eSRobert Watson 136795fab37eSRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 136895fab37eSRobert Watson mac_init_label(label); 136995fab37eSRobert Watson pipe->pipe_label = label; 137095fab37eSRobert Watson pipe->pipe_peer->pipe_label = label; 137195fab37eSRobert Watson MAC_PERFORM(init_pipe, pipe, pipe->pipe_label); 1372f050add5SRobert Watson #ifdef MAC_DEBUG 137395fab37eSRobert Watson atomic_add_int(&nmacpipes, 1); 1374f050add5SRobert Watson #endif 137595fab37eSRobert Watson } 137695fab37eSRobert Watson 137795fab37eSRobert Watson void 137895fab37eSRobert Watson mac_destroy_pipe(struct pipe *pipe) 137995fab37eSRobert Watson { 138095fab37eSRobert Watson 138195fab37eSRobert Watson MAC_PERFORM(destroy_pipe, pipe, pipe->pipe_label); 138295fab37eSRobert Watson mac_destroy_label(pipe->pipe_label); 138395fab37eSRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 1384f050add5SRobert Watson #ifdef MAC_DEBUG 138595fab37eSRobert Watson atomic_subtract_int(&nmacpipes, 1); 1386f050add5SRobert Watson #endif 138795fab37eSRobert Watson } 138895fab37eSRobert Watson 138995fab37eSRobert Watson void 139095fab37eSRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 139195fab37eSRobert Watson { 139295fab37eSRobert Watson 139395fab37eSRobert Watson mac_init_label(&bpf_d->bd_label); 139495fab37eSRobert Watson MAC_PERFORM(init_bpfdesc, bpf_d, &bpf_d->bd_label); 1395f050add5SRobert Watson #ifdef MAC_DEBUG 139695fab37eSRobert Watson atomic_add_int(&nmacbpfdescs, 1); 1397f050add5SRobert Watson #endif 139895fab37eSRobert Watson } 139995fab37eSRobert Watson 140095fab37eSRobert Watson void 140195fab37eSRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 140295fab37eSRobert Watson { 140395fab37eSRobert Watson 140495fab37eSRobert Watson MAC_PERFORM(destroy_bpfdesc, bpf_d, &bpf_d->bd_label); 140595fab37eSRobert Watson mac_destroy_label(&bpf_d->bd_label); 1406f050add5SRobert Watson #ifdef MAC_DEBUG 140795fab37eSRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 1408f050add5SRobert Watson #endif 140995fab37eSRobert Watson } 141095fab37eSRobert Watson 141195fab37eSRobert Watson void 141295fab37eSRobert Watson mac_init_mount(struct mount *mp) 141395fab37eSRobert Watson { 141495fab37eSRobert Watson 141595fab37eSRobert Watson mac_init_label(&mp->mnt_mntlabel); 141695fab37eSRobert Watson mac_init_label(&mp->mnt_fslabel); 141795fab37eSRobert Watson MAC_PERFORM(init_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 1418f050add5SRobert Watson #ifdef MAC_DEBUG 141995fab37eSRobert Watson atomic_add_int(&nmacmounts, 1); 1420f050add5SRobert Watson #endif 142195fab37eSRobert Watson } 142295fab37eSRobert Watson 142395fab37eSRobert Watson void 142495fab37eSRobert Watson mac_destroy_mount(struct mount *mp) 142595fab37eSRobert Watson { 142695fab37eSRobert Watson 142795fab37eSRobert Watson MAC_PERFORM(destroy_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 142895fab37eSRobert Watson mac_destroy_label(&mp->mnt_fslabel); 142995fab37eSRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 1430f050add5SRobert Watson #ifdef MAC_DEBUG 143195fab37eSRobert Watson atomic_subtract_int(&nmacmounts, 1); 1432f050add5SRobert Watson #endif 143395fab37eSRobert Watson } 143495fab37eSRobert Watson 143595fab37eSRobert Watson static void 143695fab37eSRobert Watson mac_init_temp(struct label *label) 143795fab37eSRobert Watson { 143895fab37eSRobert Watson 143995fab37eSRobert Watson mac_init_label(label); 144095fab37eSRobert Watson MAC_PERFORM(init_temp, label); 1441f050add5SRobert Watson #ifdef MAC_DEBUG 144295fab37eSRobert Watson atomic_add_int(&nmactemp, 1); 1443f050add5SRobert Watson #endif 144495fab37eSRobert Watson } 144595fab37eSRobert Watson 144695fab37eSRobert Watson static void 144795fab37eSRobert Watson mac_destroy_temp(struct label *label) 144895fab37eSRobert Watson { 144995fab37eSRobert Watson 145095fab37eSRobert Watson MAC_PERFORM(destroy_temp, label); 145195fab37eSRobert Watson mac_destroy_label(label); 1452f050add5SRobert Watson #ifdef MAC_DEBUG 145395fab37eSRobert Watson atomic_subtract_int(&nmactemp, 1); 1454f050add5SRobert Watson #endif 145595fab37eSRobert Watson } 145695fab37eSRobert Watson 145795fab37eSRobert Watson void 145895fab37eSRobert Watson mac_init_vnode(struct vnode *vp) 145995fab37eSRobert Watson { 146095fab37eSRobert Watson 146195fab37eSRobert Watson mac_init_label(&vp->v_label); 146295fab37eSRobert Watson MAC_PERFORM(init_vnode, vp, &vp->v_label); 1463f050add5SRobert Watson #ifdef MAC_DEBUG 146495fab37eSRobert Watson atomic_add_int(&nmacvnodes, 1); 1465f050add5SRobert Watson #endif 146695fab37eSRobert Watson } 146795fab37eSRobert Watson 146895fab37eSRobert Watson void 146995fab37eSRobert Watson mac_destroy_vnode(struct vnode *vp) 147095fab37eSRobert Watson { 147195fab37eSRobert Watson 147295fab37eSRobert Watson MAC_PERFORM(destroy_vnode, vp, &vp->v_label); 147395fab37eSRobert Watson mac_destroy_label(&vp->v_label); 1474f050add5SRobert Watson #ifdef MAC_DEBUG 147595fab37eSRobert Watson atomic_subtract_int(&nmacvnodes, 1); 1476f050add5SRobert Watson #endif 147795fab37eSRobert Watson } 147895fab37eSRobert Watson 147995fab37eSRobert Watson void 148095fab37eSRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 148195fab37eSRobert Watson { 148295fab37eSRobert Watson 148395fab37eSRobert Watson mac_init_label(&de->de_label); 148495fab37eSRobert Watson MAC_PERFORM(init_devfsdirent, de, &de->de_label); 1485f050add5SRobert Watson #ifdef MAC_DEBUG 148695fab37eSRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 1487f050add5SRobert Watson #endif 148895fab37eSRobert Watson } 148995fab37eSRobert Watson 149095fab37eSRobert Watson void 149195fab37eSRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 149295fab37eSRobert Watson { 149395fab37eSRobert Watson 149495fab37eSRobert Watson MAC_PERFORM(destroy_devfsdirent, de, &de->de_label); 149595fab37eSRobert Watson mac_destroy_label(&de->de_label); 1496f050add5SRobert Watson #ifdef MAC_DEBUG 149795fab37eSRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 1498f050add5SRobert Watson #endif 149995fab37eSRobert Watson } 150095fab37eSRobert Watson 150195fab37eSRobert Watson static int 150295fab37eSRobert Watson mac_externalize(struct label *label, struct mac *mac) 150395fab37eSRobert Watson { 150495fab37eSRobert Watson int error; 150595fab37eSRobert Watson 150695fab37eSRobert Watson mac_init_structmac(mac); 150795fab37eSRobert Watson MAC_CHECK(externalize, label, mac); 150895fab37eSRobert Watson 150995fab37eSRobert Watson return (error); 151095fab37eSRobert Watson } 151195fab37eSRobert Watson 151295fab37eSRobert Watson static int 151395fab37eSRobert Watson mac_internalize(struct label *label, struct mac *mac) 151495fab37eSRobert Watson { 151595fab37eSRobert Watson int error; 151695fab37eSRobert Watson 151795fab37eSRobert Watson mac_init_temp(label); 151895fab37eSRobert Watson MAC_CHECK(internalize, label, mac); 151995fab37eSRobert Watson if (error) 152095fab37eSRobert Watson mac_destroy_temp(label); 152195fab37eSRobert Watson 152295fab37eSRobert Watson return (error); 152395fab37eSRobert Watson } 152495fab37eSRobert Watson 152595fab37eSRobert Watson /* 152695fab37eSRobert Watson * Initialize MAC label for the first kernel process, from which other 152795fab37eSRobert Watson * kernel processes and threads are spawned. 152895fab37eSRobert Watson */ 152995fab37eSRobert Watson void 153095fab37eSRobert Watson mac_create_proc0(struct ucred *cred) 153195fab37eSRobert Watson { 153295fab37eSRobert Watson 153395fab37eSRobert Watson MAC_PERFORM(create_proc0, cred); 153495fab37eSRobert Watson } 153595fab37eSRobert Watson 153695fab37eSRobert Watson /* 153795fab37eSRobert Watson * Initialize MAC label for the first userland process, from which other 153895fab37eSRobert Watson * userland processes and threads are spawned. 153995fab37eSRobert Watson */ 154095fab37eSRobert Watson void 154195fab37eSRobert Watson mac_create_proc1(struct ucred *cred) 154295fab37eSRobert Watson { 154395fab37eSRobert Watson 154495fab37eSRobert Watson MAC_PERFORM(create_proc1, cred); 154595fab37eSRobert Watson } 154695fab37eSRobert Watson 154795fab37eSRobert Watson /* 154895fab37eSRobert Watson * When a new process is created, its label must be initialized. Generally, 154995fab37eSRobert Watson * this involves inheritence from the parent process, modulo possible 155095fab37eSRobert Watson * deltas. This function allows that processing to take place. 155195fab37eSRobert Watson */ 155295fab37eSRobert Watson void 155395fab37eSRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 155495fab37eSRobert Watson { 155595fab37eSRobert Watson 155695fab37eSRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 155795fab37eSRobert Watson } 155895fab37eSRobert Watson 155995fab37eSRobert Watson int 156095fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 156195fab37eSRobert Watson { 156295fab37eSRobert Watson int error; 156395fab37eSRobert Watson 156495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 156595fab37eSRobert Watson 156695fab37eSRobert Watson if (!mac_enforce_fs) 156795fab37eSRobert Watson return (0); 156895fab37eSRobert Watson 156995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 157095fab37eSRobert Watson if (error) 157195fab37eSRobert Watson return (error); 157295fab37eSRobert Watson 157395fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 157495fab37eSRobert Watson return (error); 157595fab37eSRobert Watson } 157695fab37eSRobert Watson 157795fab37eSRobert Watson int 157895fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 157995fab37eSRobert Watson { 158095fab37eSRobert Watson int error; 158195fab37eSRobert Watson 158295fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 158395fab37eSRobert Watson 158495fab37eSRobert Watson if (!mac_enforce_fs) 158595fab37eSRobert Watson return (0); 158695fab37eSRobert Watson 158795fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 158895fab37eSRobert Watson if (error) 158995fab37eSRobert Watson return (error); 159095fab37eSRobert Watson 159195fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 159295fab37eSRobert Watson return (error); 159395fab37eSRobert Watson } 159495fab37eSRobert Watson 159595fab37eSRobert Watson int 159695fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 159795fab37eSRobert Watson { 159895fab37eSRobert Watson int error; 159995fab37eSRobert Watson 160095fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 160195fab37eSRobert Watson 160295fab37eSRobert Watson if (!mac_enforce_fs) 160395fab37eSRobert Watson return (0); 160495fab37eSRobert Watson 160595fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 160695fab37eSRobert Watson if (error) 160795fab37eSRobert Watson return (error); 160895fab37eSRobert Watson 160995fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 161095fab37eSRobert Watson return (error); 161195fab37eSRobert Watson } 161295fab37eSRobert Watson 161395fab37eSRobert Watson int 161495fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 161595fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 161695fab37eSRobert Watson { 161795fab37eSRobert Watson int error; 161895fab37eSRobert Watson 161995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 162095fab37eSRobert Watson 162195fab37eSRobert Watson if (!mac_enforce_fs) 162295fab37eSRobert Watson return (0); 162395fab37eSRobert Watson 162495fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 162595fab37eSRobert Watson if (error) 162695fab37eSRobert Watson return (error); 162795fab37eSRobert Watson 162895fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 162995fab37eSRobert Watson return (error); 163095fab37eSRobert Watson } 163195fab37eSRobert Watson 163295fab37eSRobert Watson int 163395fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 163495fab37eSRobert Watson struct componentname *cnp) 163595fab37eSRobert Watson { 163695fab37eSRobert Watson int error; 163795fab37eSRobert Watson 163895fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 163995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 164095fab37eSRobert Watson 164195fab37eSRobert Watson if (!mac_enforce_fs) 164295fab37eSRobert Watson return (0); 164395fab37eSRobert Watson 164495fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 164595fab37eSRobert Watson if (error) 164695fab37eSRobert Watson return (error); 164795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 164895fab37eSRobert Watson if (error) 164995fab37eSRobert Watson return (error); 165095fab37eSRobert Watson 165195fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 165295fab37eSRobert Watson &vp->v_label, cnp); 165395fab37eSRobert Watson return (error); 165495fab37eSRobert Watson } 165595fab37eSRobert Watson 165695fab37eSRobert Watson int 165795fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 165895fab37eSRobert Watson acl_type_t type) 165995fab37eSRobert Watson { 166095fab37eSRobert Watson int error; 166195fab37eSRobert Watson 166295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 166395fab37eSRobert Watson 166495fab37eSRobert Watson if (!mac_enforce_fs) 166595fab37eSRobert Watson return (0); 166695fab37eSRobert Watson 166795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 166895fab37eSRobert Watson if (error) 166995fab37eSRobert Watson return (error); 167095fab37eSRobert Watson 167195fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 167295fab37eSRobert Watson return (error); 167395fab37eSRobert Watson } 167495fab37eSRobert Watson 167595fab37eSRobert Watson int 167695fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 167795fab37eSRobert Watson { 167895fab37eSRobert Watson int error; 167995fab37eSRobert Watson 1680851704bbSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec"); 1681851704bbSRobert Watson 168295fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 168395fab37eSRobert Watson return (0); 168495fab37eSRobert Watson 168595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 168695fab37eSRobert Watson if (error) 168795fab37eSRobert Watson return (error); 168895fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 168995fab37eSRobert Watson 169095fab37eSRobert Watson return (error); 169195fab37eSRobert Watson } 169295fab37eSRobert Watson 169395fab37eSRobert Watson int 169495fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 169595fab37eSRobert Watson { 169695fab37eSRobert Watson int error; 169795fab37eSRobert Watson 169895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 169995fab37eSRobert Watson 170095fab37eSRobert Watson if (!mac_enforce_fs) 170195fab37eSRobert Watson return (0); 170295fab37eSRobert Watson 170395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 170495fab37eSRobert Watson if (error) 170595fab37eSRobert Watson return (error); 170695fab37eSRobert Watson 170795fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 170895fab37eSRobert Watson return (error); 170995fab37eSRobert Watson } 171095fab37eSRobert Watson 171195fab37eSRobert Watson int 171295fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 171395fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 171495fab37eSRobert Watson { 171595fab37eSRobert Watson int error; 171695fab37eSRobert Watson 171795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 171895fab37eSRobert Watson 171995fab37eSRobert Watson if (!mac_enforce_fs) 172095fab37eSRobert Watson return (0); 172195fab37eSRobert Watson 172295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 172395fab37eSRobert Watson if (error) 172495fab37eSRobert Watson return (error); 172595fab37eSRobert Watson 172695fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 172795fab37eSRobert Watson attrnamespace, name, uio); 172895fab37eSRobert Watson return (error); 172995fab37eSRobert Watson } 173095fab37eSRobert Watson 173195fab37eSRobert Watson int 173295fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 173395fab37eSRobert Watson struct componentname *cnp) 173495fab37eSRobert Watson { 173595fab37eSRobert Watson int error; 173695fab37eSRobert Watson 173795fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 173895fab37eSRobert Watson 173995fab37eSRobert Watson if (!mac_enforce_fs) 174095fab37eSRobert Watson return (0); 174195fab37eSRobert Watson 174295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 174395fab37eSRobert Watson if (error) 174495fab37eSRobert Watson return (error); 174595fab37eSRobert Watson 174695fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 174795fab37eSRobert Watson return (error); 174895fab37eSRobert Watson } 174995fab37eSRobert Watson 175095fab37eSRobert Watson vm_prot_t 175195fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 175295fab37eSRobert Watson { 175395fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 175495fab37eSRobert Watson 175595fab37eSRobert Watson /* 175695fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 175795fab37eSRobert Watson */ 175895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 175995fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 176095fab37eSRobert Watson newmapping); 176195fab37eSRobert Watson return (result); 176295fab37eSRobert Watson } 176395fab37eSRobert Watson 176495fab37eSRobert Watson int 176595fab37eSRobert Watson mac_check_vnode_op(struct ucred *cred, struct vnode *vp, int op) 176695fab37eSRobert Watson { 176795fab37eSRobert Watson int error; 176895fab37eSRobert Watson 176995fab37eSRobert Watson if (!mac_enforce_fs) 177095fab37eSRobert Watson return (0); 177195fab37eSRobert Watson 177295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_op"); 177395fab37eSRobert Watson 177495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 177595fab37eSRobert Watson if (error) 177695fab37eSRobert Watson return (error); 177795fab37eSRobert Watson 177895fab37eSRobert Watson MAC_CHECK(check_vnode_op, cred, vp, &vp->v_label, op); 177995fab37eSRobert Watson 178095fab37eSRobert Watson return (error); 178195fab37eSRobert Watson } 178295fab37eSRobert Watson 178395fab37eSRobert Watson int 178495fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 178595fab37eSRobert Watson { 178695fab37eSRobert Watson int error; 178795fab37eSRobert Watson 178895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 178995fab37eSRobert Watson 179095fab37eSRobert Watson if (!mac_enforce_fs) 179195fab37eSRobert Watson return (0); 179295fab37eSRobert Watson 179395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 179495fab37eSRobert Watson if (error) 179595fab37eSRobert Watson return (error); 179695fab37eSRobert Watson 179795fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 179895fab37eSRobert Watson return (error); 179995fab37eSRobert Watson } 180095fab37eSRobert Watson 180195fab37eSRobert Watson int 180295fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 180395fab37eSRobert Watson { 180495fab37eSRobert Watson int error; 180595fab37eSRobert Watson 180695fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 180795fab37eSRobert Watson 180895fab37eSRobert Watson if (!mac_enforce_fs) 180995fab37eSRobert Watson return (0); 181095fab37eSRobert Watson 181195fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 181295fab37eSRobert Watson if (error) 181395fab37eSRobert Watson return (error); 181495fab37eSRobert Watson 181595fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 181695fab37eSRobert Watson return (error); 181795fab37eSRobert Watson } 181895fab37eSRobert Watson 181995fab37eSRobert Watson int 182095fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 182195fab37eSRobert Watson { 182295fab37eSRobert Watson int error; 182395fab37eSRobert Watson 182495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 182595fab37eSRobert Watson 182695fab37eSRobert Watson if (!mac_enforce_fs) 182795fab37eSRobert Watson return (0); 182895fab37eSRobert Watson 182995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 183095fab37eSRobert Watson if (error) 183195fab37eSRobert Watson return (error); 183295fab37eSRobert Watson 183395fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 183495fab37eSRobert Watson return (error); 183595fab37eSRobert Watson } 183695fab37eSRobert Watson 183795fab37eSRobert Watson static int 183895fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 183995fab37eSRobert Watson struct label *newlabel) 184095fab37eSRobert Watson { 184195fab37eSRobert Watson int error; 184295fab37eSRobert Watson 184395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 184495fab37eSRobert Watson 184595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 184695fab37eSRobert Watson if (error) 184795fab37eSRobert Watson return (error); 184895fab37eSRobert Watson 184995fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 185095fab37eSRobert Watson 185195fab37eSRobert Watson return (error); 185295fab37eSRobert Watson } 185395fab37eSRobert Watson 185495fab37eSRobert Watson int 185595fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 185695fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 185795fab37eSRobert Watson { 185895fab37eSRobert Watson int error; 185995fab37eSRobert Watson 186095fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 186195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 186295fab37eSRobert Watson 186395fab37eSRobert Watson if (!mac_enforce_fs) 186495fab37eSRobert Watson return (0); 186595fab37eSRobert Watson 186695fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 186795fab37eSRobert Watson if (error) 186895fab37eSRobert Watson return (error); 186995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 187095fab37eSRobert Watson if (error) 187195fab37eSRobert Watson return (error); 187295fab37eSRobert Watson 187395fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 187495fab37eSRobert Watson &vp->v_label, cnp); 187595fab37eSRobert Watson return (error); 187695fab37eSRobert Watson } 187795fab37eSRobert Watson 187895fab37eSRobert Watson int 187995fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 188095fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 188195fab37eSRobert Watson { 188295fab37eSRobert Watson int error; 188395fab37eSRobert Watson 188495fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 188595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 188695fab37eSRobert Watson 188795fab37eSRobert Watson if (!mac_enforce_fs) 188895fab37eSRobert Watson return (0); 188995fab37eSRobert Watson 189095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 189195fab37eSRobert Watson if (error) 189295fab37eSRobert Watson return (error); 189395fab37eSRobert Watson if (vp != NULL) { 189495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 189595fab37eSRobert Watson if (error) 189695fab37eSRobert Watson return (error); 189795fab37eSRobert Watson } 189895fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 189995fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 190095fab37eSRobert Watson return (error); 190195fab37eSRobert Watson } 190295fab37eSRobert Watson 190395fab37eSRobert Watson int 190495fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 190595fab37eSRobert Watson { 190695fab37eSRobert Watson int error; 190795fab37eSRobert Watson 190895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 190995fab37eSRobert Watson 191095fab37eSRobert Watson if (!mac_enforce_fs) 191195fab37eSRobert Watson return (0); 191295fab37eSRobert Watson 191395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 191495fab37eSRobert Watson if (error) 191595fab37eSRobert Watson return (error); 191695fab37eSRobert Watson 191795fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 191895fab37eSRobert Watson return (error); 191995fab37eSRobert Watson } 192095fab37eSRobert Watson 192195fab37eSRobert Watson int 192295fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 192395fab37eSRobert Watson struct acl *acl) 192495fab37eSRobert Watson { 192595fab37eSRobert Watson int error; 192695fab37eSRobert Watson 192795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 192895fab37eSRobert Watson 192995fab37eSRobert Watson if (!mac_enforce_fs) 193095fab37eSRobert Watson return (0); 193195fab37eSRobert Watson 193295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 193395fab37eSRobert Watson if (error) 193495fab37eSRobert Watson return (error); 193595fab37eSRobert Watson 193695fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 193795fab37eSRobert Watson return (error); 193895fab37eSRobert Watson } 193995fab37eSRobert Watson 194095fab37eSRobert Watson int 194195fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 194295fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 194395fab37eSRobert Watson { 194495fab37eSRobert Watson int error; 194595fab37eSRobert Watson 194695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 194795fab37eSRobert Watson 194895fab37eSRobert Watson if (!mac_enforce_fs) 194995fab37eSRobert Watson return (0); 195095fab37eSRobert Watson 195195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 195295fab37eSRobert Watson if (error) 195395fab37eSRobert Watson return (error); 195495fab37eSRobert Watson 195595fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 195695fab37eSRobert Watson attrnamespace, name, uio); 195795fab37eSRobert Watson return (error); 195895fab37eSRobert Watson } 195995fab37eSRobert Watson 196095fab37eSRobert Watson int 196195fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 196295fab37eSRobert Watson { 196395fab37eSRobert Watson int error; 196495fab37eSRobert Watson 196595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 196695fab37eSRobert Watson 196795fab37eSRobert Watson if (!mac_enforce_fs) 196895fab37eSRobert Watson return (0); 196995fab37eSRobert Watson 197095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 197195fab37eSRobert Watson if (error) 197295fab37eSRobert Watson return (error); 197395fab37eSRobert Watson 197495fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 197595fab37eSRobert Watson return (error); 197695fab37eSRobert Watson } 197795fab37eSRobert Watson 197895fab37eSRobert Watson int 197995fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 198095fab37eSRobert Watson { 198195fab37eSRobert Watson int error; 198295fab37eSRobert Watson 198395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 198495fab37eSRobert Watson 198595fab37eSRobert Watson if (!mac_enforce_fs) 198695fab37eSRobert Watson return (0); 198795fab37eSRobert Watson 198895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 198995fab37eSRobert Watson if (error) 199095fab37eSRobert Watson return (error); 199195fab37eSRobert Watson 199295fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 199395fab37eSRobert Watson return (error); 199495fab37eSRobert Watson } 199595fab37eSRobert Watson 199695fab37eSRobert Watson int 199795fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 199895fab37eSRobert Watson gid_t gid) 199995fab37eSRobert Watson { 200095fab37eSRobert Watson int error; 200195fab37eSRobert Watson 200295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 200395fab37eSRobert Watson 200495fab37eSRobert Watson if (!mac_enforce_fs) 200595fab37eSRobert Watson return (0); 200695fab37eSRobert Watson 200795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 200895fab37eSRobert Watson if (error) 200995fab37eSRobert Watson return (error); 201095fab37eSRobert Watson 201195fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 201295fab37eSRobert Watson return (error); 201395fab37eSRobert Watson } 201495fab37eSRobert Watson 201595fab37eSRobert Watson int 201695fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 201795fab37eSRobert Watson struct timespec atime, struct timespec mtime) 201895fab37eSRobert Watson { 201995fab37eSRobert Watson int error; 202095fab37eSRobert Watson 202195fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 202295fab37eSRobert Watson 202395fab37eSRobert Watson if (!mac_enforce_fs) 202495fab37eSRobert Watson return (0); 202595fab37eSRobert Watson 202695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 202795fab37eSRobert Watson if (error) 202895fab37eSRobert Watson return (error); 202995fab37eSRobert Watson 203095fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 203195fab37eSRobert Watson mtime); 203295fab37eSRobert Watson return (error); 203395fab37eSRobert Watson } 203495fab37eSRobert Watson 203595fab37eSRobert Watson int 203695fab37eSRobert Watson mac_check_vnode_stat(struct ucred *cred, struct vnode *vp) 203795fab37eSRobert Watson { 203895fab37eSRobert Watson int error; 203995fab37eSRobert Watson 204095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 204195fab37eSRobert Watson 204295fab37eSRobert Watson if (!mac_enforce_fs) 204395fab37eSRobert Watson return (0); 204495fab37eSRobert Watson 204595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 204695fab37eSRobert Watson if (error) 204795fab37eSRobert Watson return (error); 204895fab37eSRobert Watson 204995fab37eSRobert Watson MAC_CHECK(check_vnode_stat, cred, vp, &vp->v_label); 205095fab37eSRobert Watson return (error); 205195fab37eSRobert Watson } 205295fab37eSRobert Watson 205395fab37eSRobert Watson /* 205495fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 205595fab37eSRobert Watson * permission allowed for each object type we know about in its 205695fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 205795fab37eSRobert Watson * know) when necessary. The process lock is not held here. 205895fab37eSRobert Watson */ 205995fab37eSRobert Watson static void 206095fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 206195fab37eSRobert Watson { 206295fab37eSRobert Watson 206395fab37eSRobert Watson /* XXX freeze all other threads */ 206495fab37eSRobert Watson mtx_lock(&Giant); 206595fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 206695fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 206795fab37eSRobert Watson mtx_unlock(&Giant); 206895fab37eSRobert Watson /* XXX allow other threads to continue */ 206995fab37eSRobert Watson } 207095fab37eSRobert Watson 207195fab37eSRobert Watson static __inline const char * 207295fab37eSRobert Watson prot2str(vm_prot_t prot) 207395fab37eSRobert Watson { 207495fab37eSRobert Watson 207595fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 207695fab37eSRobert Watson case VM_PROT_READ: 207795fab37eSRobert Watson return ("r--"); 207895fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 207995fab37eSRobert Watson return ("rw-"); 208095fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 208195fab37eSRobert Watson return ("r-x"); 208295fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 208395fab37eSRobert Watson return ("rwx"); 208495fab37eSRobert Watson case VM_PROT_WRITE: 208595fab37eSRobert Watson return ("-w-"); 208695fab37eSRobert Watson case VM_PROT_EXECUTE: 208795fab37eSRobert Watson return ("--x"); 208895fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 208995fab37eSRobert Watson return ("-wx"); 209095fab37eSRobert Watson default: 209195fab37eSRobert Watson return ("---"); 209295fab37eSRobert Watson } 209395fab37eSRobert Watson } 209495fab37eSRobert Watson 209595fab37eSRobert Watson static void 209695fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 209795fab37eSRobert Watson struct vm_map *map) 209895fab37eSRobert Watson { 209995fab37eSRobert Watson struct vm_map_entry *vme; 210095fab37eSRobert Watson vm_prot_t result, revokeperms; 210195fab37eSRobert Watson vm_object_t object; 210295fab37eSRobert Watson vm_ooffset_t offset; 210395fab37eSRobert Watson struct vnode *vp; 210495fab37eSRobert Watson 210595fab37eSRobert Watson vm_map_lock_read(map); 210695fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 210795fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 210895fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 210995fab37eSRobert Watson vme->object.sub_map); 211095fab37eSRobert Watson continue; 211195fab37eSRobert Watson } 211295fab37eSRobert Watson /* 211395fab37eSRobert Watson * Skip over entries that obviously are not shared. 211495fab37eSRobert Watson */ 211595fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 211695fab37eSRobert Watson !vme->max_protection) 211795fab37eSRobert Watson continue; 211895fab37eSRobert Watson /* 211995fab37eSRobert Watson * Drill down to the deepest backing object. 212095fab37eSRobert Watson */ 212195fab37eSRobert Watson offset = vme->offset; 212295fab37eSRobert Watson object = vme->object.vm_object; 212395fab37eSRobert Watson if (object == NULL) 212495fab37eSRobert Watson continue; 212595fab37eSRobert Watson while (object->backing_object != NULL) { 212695fab37eSRobert Watson object = object->backing_object; 212795fab37eSRobert Watson offset += object->backing_object_offset; 212895fab37eSRobert Watson } 212995fab37eSRobert Watson /* 213095fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 213195fab37eSRobert Watson * by the MAC system, so only things with backing by a 213295fab37eSRobert Watson * normal object (read: vnodes) are checked. 213395fab37eSRobert Watson */ 213495fab37eSRobert Watson if (object->type != OBJT_VNODE) 213595fab37eSRobert Watson continue; 213695fab37eSRobert Watson vp = (struct vnode *)object->handle; 213795fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 213895fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 213995fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 214095fab37eSRobert Watson /* 214195fab37eSRobert Watson * Find out what maximum protection we may be allowing 214295fab37eSRobert Watson * now but a policy needs to get removed. 214395fab37eSRobert Watson */ 214495fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 214595fab37eSRobert Watson if (!revokeperms) 214695fab37eSRobert Watson continue; 214795fab37eSRobert Watson printf("pid %d: revoking %s perms from %#lx:%d " 214895fab37eSRobert Watson "(max %s/cur %s)\n", td->td_proc->p_pid, 214995fab37eSRobert Watson prot2str(revokeperms), vme->start, vme->end - vme->start, 215095fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 215195fab37eSRobert Watson vm_map_lock_upgrade(map); 215295fab37eSRobert Watson /* 215395fab37eSRobert Watson * This is the really simple case: if a map has more 215495fab37eSRobert Watson * max_protection than is allowed, but it's not being 215595fab37eSRobert Watson * actually used (that is, the current protection is 215695fab37eSRobert Watson * still allowed), we can just wipe it out and do 215795fab37eSRobert Watson * nothing more. 215895fab37eSRobert Watson */ 215995fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 216095fab37eSRobert Watson vme->max_protection -= revokeperms; 216195fab37eSRobert Watson } else { 216295fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 216395fab37eSRobert Watson /* 216495fab37eSRobert Watson * In the more complicated case, flush out all 216595fab37eSRobert Watson * pending changes to the object then turn it 216695fab37eSRobert Watson * copy-on-write. 216795fab37eSRobert Watson */ 216895fab37eSRobert Watson vm_object_reference(object); 216995fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 217095fab37eSRobert Watson vm_object_page_clean(object, 217195fab37eSRobert Watson OFF_TO_IDX(offset), 217295fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 217395fab37eSRobert Watson PAGE_MASK), 217495fab37eSRobert Watson OBJPC_SYNC); 217595fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 217695fab37eSRobert Watson vm_object_deallocate(object); 217795fab37eSRobert Watson /* 217895fab37eSRobert Watson * Why bother if there's no read permissions 217995fab37eSRobert Watson * anymore? For the rest, we need to leave 218095fab37eSRobert Watson * the write permissions on for COW, or 218195fab37eSRobert Watson * remove them entirely if configured to. 218295fab37eSRobert Watson */ 218395fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 218495fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 218595fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 218695fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 218795fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 218895fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 218995fab37eSRobert Watson } 219095fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 219195fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 219295fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 219395fab37eSRobert Watson } 219495fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 219595fab37eSRobert Watson vme->max_protection = 0; 219695fab37eSRobert Watson vme->protection = 0; 219795fab37eSRobert Watson } 219895fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 219995fab37eSRobert Watson vme->protection & ~revokeperms); 220095fab37eSRobert Watson vm_map_simplify_entry(map, vme); 220195fab37eSRobert Watson } 220295fab37eSRobert Watson vm_map_lock_downgrade(map); 220395fab37eSRobert Watson } 220495fab37eSRobert Watson vm_map_unlock_read(map); 220595fab37eSRobert Watson } 220695fab37eSRobert Watson 220795fab37eSRobert Watson /* 220895fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 220995fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 221095fab37eSRobert Watson * buffer cache. 221195fab37eSRobert Watson */ 221295fab37eSRobert Watson static void 221395fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 221495fab37eSRobert Watson { 221595fab37eSRobert Watson 221695fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 221795fab37eSRobert Watson mac_cred_mmapped_drop_perms(curthread, cred); 221895fab37eSRobert Watson } 221995fab37eSRobert Watson 222095fab37eSRobert Watson void 222195fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 222295fab37eSRobert Watson { 222395fab37eSRobert Watson 222495fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 222595fab37eSRobert Watson } 222695fab37eSRobert Watson 222795fab37eSRobert Watson void 222895fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 222995fab37eSRobert Watson { 223095fab37eSRobert Watson 223195fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 223295fab37eSRobert Watson } 223395fab37eSRobert Watson 223495fab37eSRobert Watson void 223595fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 223695fab37eSRobert Watson { 223795fab37eSRobert Watson 223895fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 223995fab37eSRobert Watson } 224095fab37eSRobert Watson 224195fab37eSRobert Watson void 224295fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 224395fab37eSRobert Watson { 224495fab37eSRobert Watson 224595fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 224695fab37eSRobert Watson } 224795fab37eSRobert Watson 224895fab37eSRobert Watson void 224995fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 225095fab37eSRobert Watson { 225195fab37eSRobert Watson 225295fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 225395fab37eSRobert Watson } 225495fab37eSRobert Watson 225595fab37eSRobert Watson void 225695fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 225795fab37eSRobert Watson struct socket *newsocket) 225895fab37eSRobert Watson { 225995fab37eSRobert Watson 226095fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 226195fab37eSRobert Watson newsocket, &newsocket->so_label); 226295fab37eSRobert Watson } 226395fab37eSRobert Watson 226495fab37eSRobert Watson static void 226595fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 226695fab37eSRobert Watson struct label *newlabel) 226795fab37eSRobert Watson { 226895fab37eSRobert Watson 226995fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 227095fab37eSRobert Watson } 227195fab37eSRobert Watson 227295fab37eSRobert Watson static void 227395fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 227495fab37eSRobert Watson { 227595fab37eSRobert Watson 227695fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 227795fab37eSRobert Watson } 227895fab37eSRobert Watson 227995fab37eSRobert Watson void 228095fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 228195fab37eSRobert Watson { 228295fab37eSRobert Watson 228395fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 228495fab37eSRobert Watson socket, &socket->so_peerlabel); 228595fab37eSRobert Watson } 228695fab37eSRobert Watson 228795fab37eSRobert Watson void 228895fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 228995fab37eSRobert Watson struct socket *newsocket) 229095fab37eSRobert Watson { 229195fab37eSRobert Watson 229295fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 229395fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 229495fab37eSRobert Watson } 229595fab37eSRobert Watson 229695fab37eSRobert Watson void 229795fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 229895fab37eSRobert Watson { 229995fab37eSRobert Watson 230095fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 230195fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 230295fab37eSRobert Watson } 230395fab37eSRobert Watson 230495fab37eSRobert Watson void 230595fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 230695fab37eSRobert Watson { 230795fab37eSRobert Watson 230895fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 230995fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 231095fab37eSRobert Watson } 231195fab37eSRobert Watson 231295fab37eSRobert Watson void 231395fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 231495fab37eSRobert Watson { 231595fab37eSRobert Watson 231695fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 231795fab37eSRobert Watson &ipq->ipq_label); 231895fab37eSRobert Watson } 231995fab37eSRobert Watson 232095fab37eSRobert Watson void 232195fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 232295fab37eSRobert Watson { 232395fab37eSRobert Watson 232495fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 232595fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 232695fab37eSRobert Watson } 232795fab37eSRobert Watson 232895fab37eSRobert Watson void 232995fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 233095fab37eSRobert Watson { 233195fab37eSRobert Watson 233295fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 233395fab37eSRobert Watson &mbuf->m_pkthdr.label); 233495fab37eSRobert Watson } 233595fab37eSRobert Watson 233695fab37eSRobert Watson void 233795fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 233895fab37eSRobert Watson { 233995fab37eSRobert Watson 234095fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 234195fab37eSRobert Watson &mbuf->m_pkthdr.label); 234295fab37eSRobert Watson } 234395fab37eSRobert Watson 234495fab37eSRobert Watson void 234595fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 234695fab37eSRobert Watson { 234795fab37eSRobert Watson 234895fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 234995fab37eSRobert Watson &mbuf->m_pkthdr.label); 235095fab37eSRobert Watson } 235195fab37eSRobert Watson 235295fab37eSRobert Watson void 235395fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 235495fab37eSRobert Watson struct mbuf *newmbuf) 235595fab37eSRobert Watson { 235695fab37eSRobert Watson 235795fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 235895fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 235995fab37eSRobert Watson &newmbuf->m_pkthdr.label); 236095fab37eSRobert Watson } 236195fab37eSRobert Watson 236295fab37eSRobert Watson void 236395fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 236495fab37eSRobert Watson { 236595fab37eSRobert Watson 236695fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 236795fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 236895fab37eSRobert Watson } 236995fab37eSRobert Watson 237095fab37eSRobert Watson int 237195fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 237295fab37eSRobert Watson { 237395fab37eSRobert Watson int result; 237495fab37eSRobert Watson 237595fab37eSRobert Watson result = 1; 237695fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 237795fab37eSRobert Watson ipq, &ipq->ipq_label); 237895fab37eSRobert Watson 237995fab37eSRobert Watson return (result); 238095fab37eSRobert Watson } 238195fab37eSRobert Watson 238295fab37eSRobert Watson void 238395fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 238495fab37eSRobert Watson { 238595fab37eSRobert Watson 238695fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 238795fab37eSRobert Watson &ipq->ipq_label); 238895fab37eSRobert Watson } 238995fab37eSRobert Watson 239095fab37eSRobert Watson void 239195fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 239295fab37eSRobert Watson { 239395fab37eSRobert Watson 239495fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 239595fab37eSRobert Watson &mbuf->m_pkthdr.label); 239695fab37eSRobert Watson } 239795fab37eSRobert Watson 239895fab37eSRobert Watson void 239995fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 240095fab37eSRobert Watson { 240195fab37eSRobert Watson 240295fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 240395fab37eSRobert Watson &mp->mnt_fslabel); 240495fab37eSRobert Watson } 240595fab37eSRobert Watson 240695fab37eSRobert Watson void 240795fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 240895fab37eSRobert Watson { 240995fab37eSRobert Watson 241095fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 241195fab37eSRobert Watson &mp->mnt_fslabel); 241295fab37eSRobert Watson } 241395fab37eSRobert Watson 241495fab37eSRobert Watson int 241595fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 241695fab37eSRobert Watson { 241795fab37eSRobert Watson int error; 241895fab37eSRobert Watson 241995fab37eSRobert Watson if (!mac_enforce_network) 242095fab37eSRobert Watson return (0); 242195fab37eSRobert Watson 242295fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 242395fab37eSRobert Watson &ifnet->if_label); 242495fab37eSRobert Watson 242595fab37eSRobert Watson return (error); 242695fab37eSRobert Watson } 242795fab37eSRobert Watson 242895fab37eSRobert Watson static int 242995fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 243095fab37eSRobert Watson { 243195fab37eSRobert Watson int error; 243295fab37eSRobert Watson 243395fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 243495fab37eSRobert Watson 243595fab37eSRobert Watson return (error); 243695fab37eSRobert Watson } 243795fab37eSRobert Watson 243895fab37eSRobert Watson int 243995fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 244095fab37eSRobert Watson { 244195fab37eSRobert Watson int error; 244295fab37eSRobert Watson 244395fab37eSRobert Watson if (!mac_enforce_process) 244495fab37eSRobert Watson return (0); 244595fab37eSRobert Watson 244695fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 244795fab37eSRobert Watson 244895fab37eSRobert Watson return (error); 244995fab37eSRobert Watson } 245095fab37eSRobert Watson 245195fab37eSRobert Watson int 245295fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 245395fab37eSRobert Watson { 245495fab37eSRobert Watson int error; 245595fab37eSRobert Watson 245695fab37eSRobert Watson if (!mac_enforce_network) 245795fab37eSRobert Watson return (0); 245895fab37eSRobert Watson 245995fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 246095fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 246195fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 246295fab37eSRobert Watson ifnet->if_unit); 246395fab37eSRobert Watson 246495fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 246595fab37eSRobert Watson &mbuf->m_pkthdr.label); 246695fab37eSRobert Watson 246795fab37eSRobert Watson return (error); 246895fab37eSRobert Watson } 246995fab37eSRobert Watson 247095fab37eSRobert Watson int 247195fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 247295fab37eSRobert Watson { 247395fab37eSRobert Watson int error; 247495fab37eSRobert Watson 247595fab37eSRobert Watson if (!mac_enforce_fs) 247695fab37eSRobert Watson return (0); 247795fab37eSRobert Watson 247895fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 247995fab37eSRobert Watson 248095fab37eSRobert Watson return (error); 248195fab37eSRobert Watson } 248295fab37eSRobert Watson 248395fab37eSRobert Watson int 248495fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 248595fab37eSRobert Watson void *data) 248695fab37eSRobert Watson { 248795fab37eSRobert Watson int error; 248895fab37eSRobert Watson 248995fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 249095fab37eSRobert Watson 249195fab37eSRobert Watson return (error); 249295fab37eSRobert Watson } 249395fab37eSRobert Watson 249495fab37eSRobert Watson int 249595fab37eSRobert Watson mac_check_pipe_op(struct ucred *cred, struct pipe *pipe, int op) 249695fab37eSRobert Watson { 249795fab37eSRobert Watson int error; 249895fab37eSRobert Watson 249995fab37eSRobert Watson MAC_CHECK(check_pipe_op, cred, pipe, pipe->pipe_label, op); 250095fab37eSRobert Watson 250195fab37eSRobert Watson return (error); 250295fab37eSRobert Watson } 250395fab37eSRobert Watson 250495fab37eSRobert Watson static int 250595fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 250695fab37eSRobert Watson struct label *newlabel) 250795fab37eSRobert Watson { 250895fab37eSRobert Watson int error; 250995fab37eSRobert Watson 251095fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 251195fab37eSRobert Watson 251295fab37eSRobert Watson return (error); 251395fab37eSRobert Watson } 251495fab37eSRobert Watson 251595fab37eSRobert Watson int 251695fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 251795fab37eSRobert Watson { 251895fab37eSRobert Watson int error; 251995fab37eSRobert Watson 2520b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2521b12baf55SRobert Watson 252295fab37eSRobert Watson if (!mac_enforce_process) 252395fab37eSRobert Watson return (0); 252495fab37eSRobert Watson 252595fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 252695fab37eSRobert Watson 252795fab37eSRobert Watson return (error); 252895fab37eSRobert Watson } 252995fab37eSRobert Watson 253095fab37eSRobert Watson int 253195fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 253295fab37eSRobert Watson { 253395fab37eSRobert Watson int error; 253495fab37eSRobert Watson 2535b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2536b12baf55SRobert Watson 253795fab37eSRobert Watson if (!mac_enforce_process) 253895fab37eSRobert Watson return (0); 253995fab37eSRobert Watson 254095fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 254195fab37eSRobert Watson 254295fab37eSRobert Watson return (error); 254395fab37eSRobert Watson } 254495fab37eSRobert Watson 254595fab37eSRobert Watson int 254695fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 254795fab37eSRobert Watson { 254895fab37eSRobert Watson int error; 254995fab37eSRobert Watson 2550b12baf55SRobert Watson PROC_LOCK_ASSERT(proc, MA_OWNED); 2551b12baf55SRobert Watson 255295fab37eSRobert Watson if (!mac_enforce_process) 255395fab37eSRobert Watson return (0); 255495fab37eSRobert Watson 255595fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 255695fab37eSRobert Watson 255795fab37eSRobert Watson return (error); 255895fab37eSRobert Watson } 255995fab37eSRobert Watson 256095fab37eSRobert Watson int 256195fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 256295fab37eSRobert Watson struct sockaddr *sockaddr) 256395fab37eSRobert Watson { 256495fab37eSRobert Watson int error; 256595fab37eSRobert Watson 256695fab37eSRobert Watson if (!mac_enforce_socket) 256795fab37eSRobert Watson return (0); 256895fab37eSRobert Watson 256995fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 257095fab37eSRobert Watson sockaddr); 257195fab37eSRobert Watson 257295fab37eSRobert Watson return (error); 257395fab37eSRobert Watson } 257495fab37eSRobert Watson 257595fab37eSRobert Watson int 257695fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 257795fab37eSRobert Watson struct sockaddr *sockaddr) 257895fab37eSRobert Watson { 257995fab37eSRobert Watson int error; 258095fab37eSRobert Watson 258195fab37eSRobert Watson if (!mac_enforce_socket) 258295fab37eSRobert Watson return (0); 258395fab37eSRobert Watson 258495fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 258595fab37eSRobert Watson sockaddr); 258695fab37eSRobert Watson 258795fab37eSRobert Watson return (error); 258895fab37eSRobert Watson } 258995fab37eSRobert Watson 259095fab37eSRobert Watson int 2591d61198e4SRobert Watson mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf) 2592d61198e4SRobert Watson { 2593d61198e4SRobert Watson int error; 2594d61198e4SRobert Watson 2595d61198e4SRobert Watson if (!mac_enforce_socket) 2596d61198e4SRobert Watson return (0); 2597d61198e4SRobert Watson 2598d61198e4SRobert Watson MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf, 2599d61198e4SRobert Watson &mbuf->m_pkthdr.label); 2600d61198e4SRobert Watson 2601d61198e4SRobert Watson return (error); 2602d61198e4SRobert Watson } 2603d61198e4SRobert Watson 2604d61198e4SRobert Watson int 260595fab37eSRobert Watson mac_check_socket_listen(struct ucred *cred, struct socket *socket) 260695fab37eSRobert Watson { 260795fab37eSRobert Watson int error; 260895fab37eSRobert Watson 260995fab37eSRobert Watson if (!mac_enforce_socket) 261095fab37eSRobert Watson return (0); 261195fab37eSRobert Watson 261295fab37eSRobert Watson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 261395fab37eSRobert Watson return (error); 261495fab37eSRobert Watson } 261595fab37eSRobert Watson 261695fab37eSRobert Watson static int 261795fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 261895fab37eSRobert Watson struct label *newlabel) 261995fab37eSRobert Watson { 262095fab37eSRobert Watson int error; 262195fab37eSRobert Watson 262295fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 262395fab37eSRobert Watson newlabel); 262495fab37eSRobert Watson 262595fab37eSRobert Watson return (error); 262695fab37eSRobert Watson } 262795fab37eSRobert Watson 262895fab37eSRobert Watson int 262995fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 263095fab37eSRobert Watson { 263195fab37eSRobert Watson int error; 263295fab37eSRobert Watson 263395fab37eSRobert Watson if (!mac_enforce_socket) 263495fab37eSRobert Watson return (0); 263595fab37eSRobert Watson 263695fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 263795fab37eSRobert Watson 263895fab37eSRobert Watson return (error); 263995fab37eSRobert Watson } 264095fab37eSRobert Watson 264195fab37eSRobert Watson int 264295fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 264395fab37eSRobert Watson struct ifnet *ifnet) 264495fab37eSRobert Watson { 264595fab37eSRobert Watson struct mac label; 264695fab37eSRobert Watson int error; 264795fab37eSRobert Watson 264895fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 264995fab37eSRobert Watson if (error) 265095fab37eSRobert Watson return (error); 265195fab37eSRobert Watson 265295fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 265395fab37eSRobert Watson } 265495fab37eSRobert Watson 265595fab37eSRobert Watson int 265695fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 265795fab37eSRobert Watson struct ifnet *ifnet) 265895fab37eSRobert Watson { 265995fab37eSRobert Watson struct mac newlabel; 266095fab37eSRobert Watson struct label intlabel; 266195fab37eSRobert Watson int error; 266295fab37eSRobert Watson 266395fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 266495fab37eSRobert Watson if (error) 266595fab37eSRobert Watson return (error); 266695fab37eSRobert Watson 266795fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 266895fab37eSRobert Watson if (error) 266995fab37eSRobert Watson return (error); 267095fab37eSRobert Watson 267195fab37eSRobert Watson /* 267295fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 267395fab37eSRobert Watson * policies impose this check themselves if required by the 267495fab37eSRobert Watson * policy. Eventually, this should go away. 267595fab37eSRobert Watson */ 267695fab37eSRobert Watson error = suser_cred(cred, 0); 267795fab37eSRobert Watson if (error) 267895fab37eSRobert Watson goto out; 267995fab37eSRobert Watson 268095fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 268195fab37eSRobert Watson &intlabel); 268295fab37eSRobert Watson if (error) 268395fab37eSRobert Watson goto out; 268495fab37eSRobert Watson 268595fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 268695fab37eSRobert Watson 268795fab37eSRobert Watson out: 268895fab37eSRobert Watson mac_destroy_temp(&intlabel); 268995fab37eSRobert Watson return (error); 269095fab37eSRobert Watson } 269195fab37eSRobert Watson 269295fab37eSRobert Watson void 269395fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 269495fab37eSRobert Watson { 269595fab37eSRobert Watson 269695fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 269795fab37eSRobert Watson } 269895fab37eSRobert Watson 269995fab37eSRobert Watson void 270095fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 270195fab37eSRobert Watson { 270295fab37eSRobert Watson 270395fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 270495fab37eSRobert Watson } 270595fab37eSRobert Watson 270695fab37eSRobert Watson static int 270795fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 270895fab37eSRobert Watson { 270995fab37eSRobert Watson int error; 271095fab37eSRobert Watson 271195fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 271295fab37eSRobert Watson 271395fab37eSRobert Watson return (error); 271495fab37eSRobert Watson } 271595fab37eSRobert Watson 271695fab37eSRobert Watson void 271795fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 271895fab37eSRobert Watson struct devfs_dirent *de) 271995fab37eSRobert Watson { 272095fab37eSRobert Watson 272195fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 272295fab37eSRobert Watson &de->de_label); 272395fab37eSRobert Watson } 272495fab37eSRobert Watson 272595fab37eSRobert Watson /* 272695fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 272795fab37eSRobert Watson */ 272895fab37eSRobert Watson void 272995fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 273095fab37eSRobert Watson struct vnode *child) 273195fab37eSRobert Watson { 273295fab37eSRobert Watson int error; 273395fab37eSRobert Watson 273495fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 273595fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 273695fab37eSRobert Watson 273795fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 273895fab37eSRobert Watson if (error) { 273995fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 274095fab37eSRobert Watson error); 274195fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 274295fab37eSRobert Watson } 274395fab37eSRobert Watson 274495fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 274595fab37eSRobert Watson &child->v_label); 274695fab37eSRobert Watson } 274795fab37eSRobert Watson 274895fab37eSRobert Watson int 274995fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 275095fab37eSRobert Watson struct mac *extmac) 275195fab37eSRobert Watson { 275295fab37eSRobert Watson struct label intlabel; 275395fab37eSRobert Watson int error; 275495fab37eSRobert Watson 275595fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 275695fab37eSRobert Watson if (error) 275795fab37eSRobert Watson return (error); 275895fab37eSRobert Watson 275995fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 276095fab37eSRobert Watson if (error) { 276195fab37eSRobert Watson mac_destroy_temp(&intlabel); 276295fab37eSRobert Watson return (error); 276395fab37eSRobert Watson } 276495fab37eSRobert Watson 276595fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 276695fab37eSRobert Watson 276795fab37eSRobert Watson mac_destroy_temp(&intlabel); 276895fab37eSRobert Watson return (0); 276995fab37eSRobert Watson } 277095fab37eSRobert Watson 277195fab37eSRobert Watson int 277295fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 277395fab37eSRobert Watson { 277495fab37eSRobert Watson int error; 277595fab37eSRobert Watson 277695fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 277795fab37eSRobert Watson if (error) 277895fab37eSRobert Watson return (error); 277995fab37eSRobert Watson 278095fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 278195fab37eSRobert Watson 278295fab37eSRobert Watson return (0); 278395fab37eSRobert Watson } 278495fab37eSRobert Watson 278595fab37eSRobert Watson int 278695fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 278795fab37eSRobert Watson struct mac *extmac) 278895fab37eSRobert Watson { 278995fab37eSRobert Watson 279095fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 279195fab37eSRobert Watson } 279295fab37eSRobert Watson 279395fab37eSRobert Watson int 279495fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 279595fab37eSRobert Watson struct mac *extmac) 279695fab37eSRobert Watson { 279795fab37eSRobert Watson 279895fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 279995fab37eSRobert Watson } 280095fab37eSRobert Watson 280195fab37eSRobert Watson /* 280295fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 280395fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 280495fab37eSRobert Watson * extended attributes. 280595fab37eSRobert Watson */ 280695fab37eSRobert Watson int 280795fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 280895fab37eSRobert Watson { 280995fab37eSRobert Watson struct vnode *vp = ap->a_vp; 281095fab37eSRobert Watson struct label *intlabel = ap->a_label; 281195fab37eSRobert Watson struct mac extmac; 281295fab37eSRobert Watson int error; 281395fab37eSRobert Watson 281495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 281595fab37eSRobert Watson 281695fab37eSRobert Watson /* 281795fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 281895fab37eSRobert Watson * Be particularly careful to avoid race conditions, 281995fab37eSRobert Watson * consistency problems, and stability problems when 282095fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 282195fab37eSRobert Watson * the ability to write multiple EAs on the same file in 282295fab37eSRobert Watson * a single transaction, which the current EA interface 282395fab37eSRobert Watson * does not provide. 282495fab37eSRobert Watson */ 282595fab37eSRobert Watson 282695fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 282795fab37eSRobert Watson if (error) 282895fab37eSRobert Watson return (error); 282995fab37eSRobert Watson 283095fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 283195fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 283295fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 283395fab37eSRobert Watson if (error) 283495fab37eSRobert Watson return (error); 283595fab37eSRobert Watson 283695fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 283795fab37eSRobert Watson 2838e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 283995fab37eSRobert Watson 284095fab37eSRobert Watson return (0); 284195fab37eSRobert Watson } 284295fab37eSRobert Watson 284395fab37eSRobert Watson static int 284495fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 284595fab37eSRobert Watson { 284695fab37eSRobert Watson int error; 284795fab37eSRobert Watson 284895fab37eSRobert Watson if (vp->v_mount == NULL) { 284995fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 285095fab37eSRobert Watson if (vp->v_tag != VT_NON) 285195fab37eSRobert Watson printf("vn_setlabel: null v_mount with non-VT_NON\n"); 285295fab37eSRobert Watson return (EBADF); 285395fab37eSRobert Watson } 285495fab37eSRobert Watson 285595fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 285695fab37eSRobert Watson return (EOPNOTSUPP); 285795fab37eSRobert Watson 285895fab37eSRobert Watson /* 285995fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 286095fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 286195fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 286295fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 286395fab37eSRobert Watson */ 286495fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 286595fab37eSRobert Watson if (error) 286695fab37eSRobert Watson return (error); 286795fab37eSRobert Watson 286895fab37eSRobert Watson /* 286995fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 287095fab37eSRobert Watson * decisions about who is and is not able to modify labels 287195fab37eSRobert Watson * and protections on files. This might not be right. We can't 287295fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 287395fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 287495fab37eSRobert Watson */ 287595fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 287695fab37eSRobert Watson if (error) 287795fab37eSRobert Watson return (error); 287895fab37eSRobert Watson 287995fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 288095fab37eSRobert Watson if (error) 288195fab37eSRobert Watson return (error); 288295fab37eSRobert Watson 288395fab37eSRobert Watson return (0); 288495fab37eSRobert Watson } 288595fab37eSRobert Watson 288695fab37eSRobert Watson /* 288795fab37eSRobert Watson * MPSAFE 288895fab37eSRobert Watson */ 288995fab37eSRobert Watson int 289095fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 289195fab37eSRobert Watson { 289295fab37eSRobert Watson struct mac extmac; 289395fab37eSRobert Watson int error; 289495fab37eSRobert Watson 289595fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 289695fab37eSRobert Watson if (error == 0) 289795fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 289895fab37eSRobert Watson 289995fab37eSRobert Watson return (error); 290095fab37eSRobert Watson } 290195fab37eSRobert Watson 290295fab37eSRobert Watson /* 290395fab37eSRobert Watson * MPSAFE 290495fab37eSRobert Watson * 290595fab37eSRobert Watson * XXX: Needs to be re-written for proc locking. 290695fab37eSRobert Watson */ 290795fab37eSRobert Watson int 290895fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 290995fab37eSRobert Watson { 291095fab37eSRobert Watson struct ucred *newcred, *oldcred; 291195fab37eSRobert Watson struct proc *p; 291295fab37eSRobert Watson struct mac extmac; 291395fab37eSRobert Watson struct label intlabel; 291495fab37eSRobert Watson int error; 291595fab37eSRobert Watson 291695fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 291795fab37eSRobert Watson if (error) 291895fab37eSRobert Watson return (error); 291995fab37eSRobert Watson 292095fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 292195fab37eSRobert Watson if (error) 292295fab37eSRobert Watson return (error); 292395fab37eSRobert Watson 292495fab37eSRobert Watson newcred = crget(); 292595fab37eSRobert Watson 292695fab37eSRobert Watson p = td->td_proc; 292795fab37eSRobert Watson PROC_LOCK(p); 292895fab37eSRobert Watson oldcred = p->p_ucred; 292995fab37eSRobert Watson 293095fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 293195fab37eSRobert Watson if (error) { 293295fab37eSRobert Watson PROC_UNLOCK(p); 293395fab37eSRobert Watson mac_destroy_temp(&intlabel); 293495fab37eSRobert Watson crfree(newcred); 293595fab37eSRobert Watson return (error); 293695fab37eSRobert Watson } 293795fab37eSRobert Watson 293895fab37eSRobert Watson setsugid(p); 293995fab37eSRobert Watson crcopy(newcred, oldcred); 294095fab37eSRobert Watson PROC_UNLOCK(p); 294195fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 294295fab37eSRobert Watson 294395fab37eSRobert Watson PROC_LOCK(p); 294495fab37eSRobert Watson p->p_ucred = newcred; 294595fab37eSRobert Watson PROC_UNLOCK(p); 294695fab37eSRobert Watson crfree(oldcred); 294795fab37eSRobert Watson mac_destroy_temp(&intlabel); 294895fab37eSRobert Watson return (0); 294995fab37eSRobert Watson } 295095fab37eSRobert Watson 295195fab37eSRobert Watson /* 295295fab37eSRobert Watson * MPSAFE 295395fab37eSRobert Watson */ 295495fab37eSRobert Watson int 295595fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 295695fab37eSRobert Watson { 295795fab37eSRobert Watson struct file *fp; 295895fab37eSRobert Watson struct mac extmac; 295995fab37eSRobert Watson struct vnode *vp; 296095fab37eSRobert Watson struct pipe *pipe; 296195fab37eSRobert Watson int error; 296295fab37eSRobert Watson 296395fab37eSRobert Watson mtx_lock(&Giant); 296495fab37eSRobert Watson 296595fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 296695fab37eSRobert Watson if (error) 296795fab37eSRobert Watson goto out; 296895fab37eSRobert Watson 296995fab37eSRobert Watson switch (fp->f_type) { 297095fab37eSRobert Watson case DTYPE_FIFO: 297195fab37eSRobert Watson case DTYPE_VNODE: 297295fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 297395fab37eSRobert Watson 297495fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 297595fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 297695fab37eSRobert Watson if (error == 0) 297795fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 297895fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 297995fab37eSRobert Watson break; 298095fab37eSRobert Watson case DTYPE_PIPE: 298195fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 298295fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 298395fab37eSRobert Watson break; 298495fab37eSRobert Watson default: 298595fab37eSRobert Watson error = EINVAL; 298695fab37eSRobert Watson } 298795fab37eSRobert Watson 298895fab37eSRobert Watson if (error == 0) 298995fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 299095fab37eSRobert Watson 299195fab37eSRobert Watson fdrop(fp, td); 299295fab37eSRobert Watson 299395fab37eSRobert Watson out: 299495fab37eSRobert Watson mtx_unlock(&Giant); 299595fab37eSRobert Watson return (error); 299695fab37eSRobert Watson } 299795fab37eSRobert Watson 299895fab37eSRobert Watson /* 299995fab37eSRobert Watson * MPSAFE 300095fab37eSRobert Watson */ 300195fab37eSRobert Watson int 300295fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 300395fab37eSRobert Watson { 300495fab37eSRobert Watson struct nameidata nd; 300595fab37eSRobert Watson struct mac extmac; 300695fab37eSRobert Watson int error; 300795fab37eSRobert Watson 300895fab37eSRobert Watson mtx_lock(&Giant); 300995fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 301095fab37eSRobert Watson SCARG(uap, path_p), td); 301195fab37eSRobert Watson error = namei(&nd); 301295fab37eSRobert Watson if (error) 301395fab37eSRobert Watson goto out; 301495fab37eSRobert Watson 301595fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 301695fab37eSRobert Watson if (error == 0) 301795fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 301895fab37eSRobert Watson NDFREE(&nd, 0); 301995fab37eSRobert Watson if (error) 302095fab37eSRobert Watson goto out; 302195fab37eSRobert Watson 302295fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 302395fab37eSRobert Watson 302495fab37eSRobert Watson out: 302595fab37eSRobert Watson mtx_unlock(&Giant); 302695fab37eSRobert Watson return (error); 302795fab37eSRobert Watson } 302895fab37eSRobert Watson 302995fab37eSRobert Watson /* 303095fab37eSRobert Watson * MPSAFE 303195fab37eSRobert Watson */ 303295fab37eSRobert Watson int 303395fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 303495fab37eSRobert Watson { 303595fab37eSRobert Watson struct file *fp; 303695fab37eSRobert Watson struct mac extmac; 303795fab37eSRobert Watson struct label intlabel; 303895fab37eSRobert Watson struct mount *mp; 303995fab37eSRobert Watson struct vnode *vp; 304095fab37eSRobert Watson struct pipe *pipe; 304195fab37eSRobert Watson int error; 304295fab37eSRobert Watson 304395fab37eSRobert Watson mtx_lock(&Giant); 304495fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 304595fab37eSRobert Watson if (error) 304695fab37eSRobert Watson goto out1; 304795fab37eSRobert Watson 304895fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 304995fab37eSRobert Watson if (error) 305095fab37eSRobert Watson goto out2; 305195fab37eSRobert Watson 305295fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 305395fab37eSRobert Watson if (error) 305495fab37eSRobert Watson goto out2; 305595fab37eSRobert Watson 305695fab37eSRobert Watson switch (fp->f_type) { 305795fab37eSRobert Watson case DTYPE_FIFO: 305895fab37eSRobert Watson case DTYPE_VNODE: 305995fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 306095fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 306195fab37eSRobert Watson if (error != 0) 306295fab37eSRobert Watson break; 306395fab37eSRobert Watson 306495fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 306595fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 306695fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 306795fab37eSRobert Watson vn_finished_write(mp); 306895fab37eSRobert Watson mac_destroy_temp(&intlabel); 306995fab37eSRobert Watson break; 307095fab37eSRobert Watson case DTYPE_PIPE: 307195fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 307295fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 307395fab37eSRobert Watson break; 307495fab37eSRobert Watson default: 307595fab37eSRobert Watson error = EINVAL; 307695fab37eSRobert Watson } 307795fab37eSRobert Watson 307895fab37eSRobert Watson out2: 307995fab37eSRobert Watson fdrop(fp, td); 308095fab37eSRobert Watson out1: 308195fab37eSRobert Watson mtx_unlock(&Giant); 308295fab37eSRobert Watson return (error); 308395fab37eSRobert Watson } 308495fab37eSRobert Watson 308595fab37eSRobert Watson /* 308695fab37eSRobert Watson * MPSAFE 308795fab37eSRobert Watson */ 308895fab37eSRobert Watson int 308995fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 309095fab37eSRobert Watson { 309195fab37eSRobert Watson struct nameidata nd; 309295fab37eSRobert Watson struct mac extmac; 309395fab37eSRobert Watson struct label intlabel; 309495fab37eSRobert Watson struct mount *mp; 309595fab37eSRobert Watson int error; 309695fab37eSRobert Watson 309795fab37eSRobert Watson mtx_lock(&Giant); 309895fab37eSRobert Watson 309995fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 310095fab37eSRobert Watson if (error) 310195fab37eSRobert Watson goto out; 310295fab37eSRobert Watson 310395fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 310495fab37eSRobert Watson if (error) 310595fab37eSRobert Watson goto out; 310695fab37eSRobert Watson 310795fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 310895fab37eSRobert Watson SCARG(uap, path_p), td); 310995fab37eSRobert Watson error = namei(&nd); 311095fab37eSRobert Watson if (error) 311195fab37eSRobert Watson goto out2; 311295fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 311395fab37eSRobert Watson if (error) 311495fab37eSRobert Watson goto out2; 311595fab37eSRobert Watson 311695fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 311795fab37eSRobert Watson 311895fab37eSRobert Watson vn_finished_write(mp); 311995fab37eSRobert Watson out2: 312095fab37eSRobert Watson mac_destroy_temp(&intlabel); 312195fab37eSRobert Watson NDFREE(&nd, 0); 312295fab37eSRobert Watson out: 312395fab37eSRobert Watson mtx_unlock(&Giant); 312495fab37eSRobert Watson return (error); 312595fab37eSRobert Watson } 312695fab37eSRobert Watson 312795fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 312895fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 312995fab37eSRobert Watson 313095fab37eSRobert Watson #else /* !MAC */ 31317bc82500SRobert Watson 31327bc82500SRobert Watson int 31337bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 31347bc82500SRobert Watson { 31357bc82500SRobert Watson 31367bc82500SRobert Watson return (ENOSYS); 31377bc82500SRobert Watson } 31387bc82500SRobert Watson 31397bc82500SRobert Watson int 31407bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 31417bc82500SRobert Watson { 31427bc82500SRobert Watson 31437bc82500SRobert Watson return (ENOSYS); 31447bc82500SRobert Watson } 31457bc82500SRobert Watson 31467bc82500SRobert Watson int 31477bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 31487bc82500SRobert Watson { 31497bc82500SRobert Watson 31507bc82500SRobert Watson return (ENOSYS); 31517bc82500SRobert Watson } 31527bc82500SRobert Watson 31537bc82500SRobert Watson int 31547bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 31557bc82500SRobert Watson { 31567bc82500SRobert Watson 31577bc82500SRobert Watson return (ENOSYS); 31587bc82500SRobert Watson } 31597bc82500SRobert Watson 31607bc82500SRobert Watson int 31617bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 31627bc82500SRobert Watson { 31637bc82500SRobert Watson 31647bc82500SRobert Watson return (ENOSYS); 31657bc82500SRobert Watson } 31667bc82500SRobert Watson 31677bc82500SRobert Watson int 31687bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 31697bc82500SRobert Watson { 31707bc82500SRobert Watson 31717bc82500SRobert Watson return (ENOSYS); 31727bc82500SRobert Watson } 317395fab37eSRobert Watson 317495fab37eSRobert Watson #endif /* !MAC */ 3175