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 17095fab37eSRobert Watson static unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs, 17195fab37eSRobert Watson nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents, 17295fab37eSRobert Watson nmacipqs, nmacpipes; 17395fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, mbufs, CTLFLAG_RD, 17495fab37eSRobert Watson &nmacmbufs, 0, "number of mbufs in use"); 17595fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, creds, CTLFLAG_RD, 17695fab37eSRobert Watson &nmaccreds, 0, "number of ucreds in use"); 17795fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, ifnets, CTLFLAG_RD, 17895fab37eSRobert Watson &nmacifnets, 0, "number of ifnets in use"); 17995fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, ipqs, CTLFLAG_RD, 18095fab37eSRobert Watson &nmacipqs, 0, "number of ipqs in use"); 18195fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, bpfdescs, CTLFLAG_RD, 18295fab37eSRobert Watson &nmacbpfdescs, 0, "number of bpfdescs in use"); 18395fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, sockets, CTLFLAG_RD, 18495fab37eSRobert Watson &nmacsockets, 0, "number of sockets in use"); 18595fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, pipes, CTLFLAG_RD, 18695fab37eSRobert Watson &nmacpipes, 0, "number of pipes in use"); 18795fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, mounts, CTLFLAG_RD, 18895fab37eSRobert Watson &nmacmounts, 0, "number of mounts in use"); 18995fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, temp, CTLFLAG_RD, 19095fab37eSRobert Watson &nmactemp, 0, "number of temporary labels in use"); 19195fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, vnodes, CTLFLAG_RD, 19295fab37eSRobert Watson &nmacvnodes, 0, "number of vnodes in use"); 19395fab37eSRobert Watson SYSCTL_UINT(_security_mac_debug, OID_AUTO, devfsdirents, CTLFLAG_RD, 19495fab37eSRobert Watson &nmacdevfsdirents, 0, "number of devfs dirents inuse"); 19595fab37eSRobert Watson 19695fab37eSRobert Watson static int error_select(int error1, int error2); 19795fab37eSRobert Watson static int mac_externalize(struct label *label, struct mac *mac); 19895fab37eSRobert Watson static int mac_policy_register(struct mac_policy_conf *mpc); 19995fab37eSRobert Watson static int mac_policy_unregister(struct mac_policy_conf *mpc); 20095fab37eSRobert Watson 20195fab37eSRobert Watson static int mac_stdcreatevnode_ea(struct vnode *vp); 20295fab37eSRobert Watson static void mac_cred_mmapped_drop_perms(struct thread *td, 20395fab37eSRobert Watson struct ucred *cred); 20495fab37eSRobert Watson static void mac_cred_mmapped_drop_perms_recurse(struct thread *td, 20595fab37eSRobert Watson struct ucred *cred, struct vm_map *map); 20695fab37eSRobert Watson 20795fab37eSRobert Watson MALLOC_DEFINE(M_MACOPVEC, "macopvec", "MAC policy operation vector"); 20895fab37eSRobert Watson MALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes"); 20995fab37eSRobert Watson 21095fab37eSRobert Watson /* 21195fab37eSRobert Watson * mac_policy_list_lock protects the consistency of 'mac_policy_list', 21295fab37eSRobert Watson * the linked list of attached policy modules. Read-only consumers of 21395fab37eSRobert Watson * the list must acquire a shared lock for the duration of their use; 21495fab37eSRobert Watson * writers must acquire an exclusive lock. Note that for compound 21595fab37eSRobert Watson * operations, locks should be held for the entire compound operation, 21695fab37eSRobert Watson * and that this is not yet done for relabel requests. 21795fab37eSRobert Watson */ 21895fab37eSRobert Watson static struct mtx mac_policy_list_lock; 21995fab37eSRobert Watson static LIST_HEAD(, mac_policy_conf) mac_policy_list; 22095fab37eSRobert Watson static int mac_policy_list_busy; 22195fab37eSRobert Watson #define MAC_POLICY_LIST_LOCKINIT() mtx_init(&mac_policy_list_lock, \ 22295fab37eSRobert Watson "mac_policy_list_lock", NULL, MTX_DEF); 22395fab37eSRobert Watson #define MAC_POLICY_LIST_LOCK() mtx_lock(&mac_policy_list_lock); 22495fab37eSRobert Watson #define MAC_POLICY_LIST_UNLOCK() mtx_unlock(&mac_policy_list_lock); 22595fab37eSRobert Watson 22695fab37eSRobert Watson #define MAC_POLICY_LIST_BUSY() do { \ 22795fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 22895fab37eSRobert Watson mac_policy_list_busy++; \ 22995fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 23095fab37eSRobert Watson } while (0) 23195fab37eSRobert Watson 23295fab37eSRobert Watson #define MAC_POLICY_LIST_UNBUSY() do { \ 23395fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); \ 23495fab37eSRobert Watson mac_policy_list_busy--; \ 23595fab37eSRobert Watson if (mac_policy_list_busy < 0) \ 23695fab37eSRobert Watson panic("Extra mac_policy_list_busy--"); \ 23795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); \ 23895fab37eSRobert Watson } while (0) 23995fab37eSRobert Watson 24095fab37eSRobert Watson /* 24195fab37eSRobert Watson * MAC_CHECK performs the designated check by walking the policy 24295fab37eSRobert Watson * module list and checking with each as to how it feels about the 24395fab37eSRobert Watson * request. Note that it returns its value via 'error' in the scope 24495fab37eSRobert Watson * of the caller. 24595fab37eSRobert Watson */ 24695fab37eSRobert Watson #define MAC_CHECK(check, args...) do { \ 24795fab37eSRobert Watson struct mac_policy_conf *mpc; \ 24895fab37eSRobert Watson \ 24995fab37eSRobert Watson error = 0; \ 25095fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 25195fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 25295fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## check != NULL) \ 25395fab37eSRobert Watson error = error_select( \ 25495fab37eSRobert Watson mpc->mpc_ops->mpo_ ## check (args), \ 25595fab37eSRobert Watson error); \ 25695fab37eSRobert Watson } \ 25795fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 25895fab37eSRobert Watson } while (0) 25995fab37eSRobert Watson 26095fab37eSRobert Watson /* 26195fab37eSRobert Watson * MAC_BOOLEAN performs the designated boolean composition by walking 26295fab37eSRobert Watson * the module list, invoking each instance of the operation, and 26395fab37eSRobert Watson * combining the results using the passed C operator. Note that it 26495fab37eSRobert Watson * returns its value via 'result' in the scope of the caller, which 26595fab37eSRobert Watson * should be initialized by the caller in a meaningful way to get 26695fab37eSRobert Watson * a meaningful result. 26795fab37eSRobert Watson */ 26895fab37eSRobert Watson #define MAC_BOOLEAN(operation, composition, args...) do { \ 26995fab37eSRobert Watson struct mac_policy_conf *mpc; \ 27095fab37eSRobert Watson \ 27195fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 27295fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 27395fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 27495fab37eSRobert Watson result = result composition \ 27595fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 27695fab37eSRobert Watson } \ 27795fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 27895fab37eSRobert Watson } while (0) 27995fab37eSRobert Watson 28095fab37eSRobert Watson /* 28195fab37eSRobert Watson * MAC_PERFORM performs the designated operation by walking the policy 28295fab37eSRobert Watson * module list and invoking that operation for each policy. 28395fab37eSRobert Watson */ 28495fab37eSRobert Watson #define MAC_PERFORM(operation, args...) do { \ 28595fab37eSRobert Watson struct mac_policy_conf *mpc; \ 28695fab37eSRobert Watson \ 28795fab37eSRobert Watson MAC_POLICY_LIST_BUSY(); \ 28895fab37eSRobert Watson LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 28995fab37eSRobert Watson if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 29095fab37eSRobert Watson mpc->mpc_ops->mpo_ ## operation (args); \ 29195fab37eSRobert Watson } \ 29295fab37eSRobert Watson MAC_POLICY_LIST_UNBUSY(); \ 29395fab37eSRobert Watson } while (0) 29495fab37eSRobert Watson 29595fab37eSRobert Watson /* 29695fab37eSRobert Watson * Initialize the MAC subsystem, including appropriate SMP locks. 29795fab37eSRobert Watson */ 29895fab37eSRobert Watson static void 29995fab37eSRobert Watson mac_init(void) 30095fab37eSRobert Watson { 30195fab37eSRobert Watson 30295fab37eSRobert Watson LIST_INIT(&mac_policy_list); 30395fab37eSRobert Watson MAC_POLICY_LIST_LOCKINIT(); 30495fab37eSRobert Watson } 30595fab37eSRobert Watson 30695fab37eSRobert Watson /* 30795fab37eSRobert Watson * For the purposes of modules that want to know if they were loaded 30895fab37eSRobert Watson * "early", set the mac_late flag once we've processed modules either 30995fab37eSRobert Watson * linked into the kernel, or loaded before the kernel startup. 31095fab37eSRobert Watson */ 31195fab37eSRobert Watson static void 31295fab37eSRobert Watson mac_late_init(void) 31395fab37eSRobert Watson { 31495fab37eSRobert Watson 31595fab37eSRobert Watson mac_late = 1; 31695fab37eSRobert Watson } 31795fab37eSRobert Watson 31895fab37eSRobert Watson /* 31995fab37eSRobert Watson * Allow MAC policy modules to register during boot, etc. 32095fab37eSRobert Watson */ 32195fab37eSRobert Watson int 32295fab37eSRobert Watson mac_policy_modevent(module_t mod, int type, void *data) 32395fab37eSRobert Watson { 32495fab37eSRobert Watson struct mac_policy_conf *mpc; 32595fab37eSRobert Watson int error; 32695fab37eSRobert Watson 32795fab37eSRobert Watson error = 0; 32895fab37eSRobert Watson mpc = (struct mac_policy_conf *) data; 32995fab37eSRobert Watson 33095fab37eSRobert Watson switch (type) { 33195fab37eSRobert Watson case MOD_LOAD: 33295fab37eSRobert Watson if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE && 33395fab37eSRobert Watson mac_late) { 33495fab37eSRobert Watson printf("mac_policy_modevent: can't load %s policy " 33595fab37eSRobert Watson "after booting\n", mpc->mpc_name); 33695fab37eSRobert Watson error = EBUSY; 33795fab37eSRobert Watson break; 33895fab37eSRobert Watson } 33995fab37eSRobert Watson error = mac_policy_register(mpc); 34095fab37eSRobert Watson break; 34195fab37eSRobert Watson case MOD_UNLOAD: 34295fab37eSRobert Watson /* Don't unregister the module if it was never registered. */ 34395fab37eSRobert Watson if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) 34495fab37eSRobert Watson != 0) 34595fab37eSRobert Watson error = mac_policy_unregister(mpc); 34695fab37eSRobert Watson else 34795fab37eSRobert Watson error = 0; 34895fab37eSRobert Watson break; 34995fab37eSRobert Watson default: 35095fab37eSRobert Watson break; 35195fab37eSRobert Watson } 35295fab37eSRobert Watson 35395fab37eSRobert Watson return (error); 35495fab37eSRobert Watson } 35595fab37eSRobert Watson 35695fab37eSRobert Watson static int 35795fab37eSRobert Watson mac_policy_register(struct mac_policy_conf *mpc) 35895fab37eSRobert Watson { 35995fab37eSRobert Watson struct mac_policy_conf *tmpc; 36095fab37eSRobert Watson struct mac_policy_ops *ops; 36195fab37eSRobert Watson struct mac_policy_op_entry *mpe; 36295fab37eSRobert Watson int slot; 36395fab37eSRobert Watson 36495fab37eSRobert Watson MALLOC(mpc->mpc_ops, struct mac_policy_ops *, sizeof(*ops), M_MACOPVEC, 36595fab37eSRobert Watson M_WAITOK | M_ZERO); 36695fab37eSRobert Watson for (mpe = mpc->mpc_entries; mpe->mpe_constant != MAC_OP_LAST; mpe++) { 36795fab37eSRobert Watson switch (mpe->mpe_constant) { 36895fab37eSRobert Watson case MAC_OP_LAST: 36995fab37eSRobert Watson /* 37095fab37eSRobert Watson * Doesn't actually happen, but this allows checking 37195fab37eSRobert Watson * that all enumerated values are handled. 37295fab37eSRobert Watson */ 37395fab37eSRobert Watson break; 37495fab37eSRobert Watson case MAC_DESTROY: 37595fab37eSRobert Watson mpc->mpc_ops->mpo_destroy = 37695fab37eSRobert Watson mpe->mpe_function; 37795fab37eSRobert Watson break; 37895fab37eSRobert Watson case MAC_INIT: 37995fab37eSRobert Watson mpc->mpc_ops->mpo_init = 38095fab37eSRobert Watson mpe->mpe_function; 38195fab37eSRobert Watson break; 38295fab37eSRobert Watson case MAC_INIT_BPFDESC: 38395fab37eSRobert Watson mpc->mpc_ops->mpo_init_bpfdesc = 38495fab37eSRobert Watson mpe->mpe_function; 38595fab37eSRobert Watson break; 38695fab37eSRobert Watson case MAC_INIT_CRED: 38795fab37eSRobert Watson mpc->mpc_ops->mpo_init_cred = 38895fab37eSRobert Watson mpe->mpe_function; 38995fab37eSRobert Watson break; 39095fab37eSRobert Watson case MAC_INIT_DEVFSDIRENT: 39195fab37eSRobert Watson mpc->mpc_ops->mpo_init_devfsdirent = 39295fab37eSRobert Watson mpe->mpe_function; 39395fab37eSRobert Watson break; 39495fab37eSRobert Watson case MAC_INIT_IFNET: 39595fab37eSRobert Watson mpc->mpc_ops->mpo_init_ifnet = 39695fab37eSRobert Watson mpe->mpe_function; 39795fab37eSRobert Watson break; 39895fab37eSRobert Watson case MAC_INIT_IPQ: 39995fab37eSRobert Watson mpc->mpc_ops->mpo_init_ipq = 40095fab37eSRobert Watson mpe->mpe_function; 40195fab37eSRobert Watson break; 40295fab37eSRobert Watson case MAC_INIT_MBUF: 40395fab37eSRobert Watson mpc->mpc_ops->mpo_init_mbuf = 40495fab37eSRobert Watson mpe->mpe_function; 40595fab37eSRobert Watson break; 40695fab37eSRobert Watson case MAC_INIT_MOUNT: 40795fab37eSRobert Watson mpc->mpc_ops->mpo_init_mount = 40895fab37eSRobert Watson mpe->mpe_function; 40995fab37eSRobert Watson break; 41095fab37eSRobert Watson case MAC_INIT_PIPE: 41195fab37eSRobert Watson mpc->mpc_ops->mpo_init_pipe = 41295fab37eSRobert Watson mpe->mpe_function; 41395fab37eSRobert Watson break; 41495fab37eSRobert Watson case MAC_INIT_SOCKET: 41595fab37eSRobert Watson mpc->mpc_ops->mpo_init_socket = 41695fab37eSRobert Watson mpe->mpe_function; 41795fab37eSRobert Watson break; 41895fab37eSRobert Watson case MAC_INIT_TEMP: 41995fab37eSRobert Watson mpc->mpc_ops->mpo_init_temp = 42095fab37eSRobert Watson mpe->mpe_function; 42195fab37eSRobert Watson break; 42295fab37eSRobert Watson case MAC_INIT_VNODE: 42395fab37eSRobert Watson mpc->mpc_ops->mpo_init_vnode = 42495fab37eSRobert Watson mpe->mpe_function; 42595fab37eSRobert Watson break; 42695fab37eSRobert Watson case MAC_DESTROY_BPFDESC: 42795fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_bpfdesc = 42895fab37eSRobert Watson mpe->mpe_function; 42995fab37eSRobert Watson break; 43095fab37eSRobert Watson case MAC_DESTROY_CRED: 43195fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_cred = 43295fab37eSRobert Watson mpe->mpe_function; 43395fab37eSRobert Watson break; 43495fab37eSRobert Watson case MAC_DESTROY_DEVFSDIRENT: 43595fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_devfsdirent = 43695fab37eSRobert Watson mpe->mpe_function; 43795fab37eSRobert Watson break; 43895fab37eSRobert Watson case MAC_DESTROY_IFNET: 43995fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_ifnet = 44095fab37eSRobert Watson mpe->mpe_function; 44195fab37eSRobert Watson break; 44295fab37eSRobert Watson case MAC_DESTROY_IPQ: 44395fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_ipq = 44495fab37eSRobert Watson mpe->mpe_function; 44595fab37eSRobert Watson break; 44695fab37eSRobert Watson case MAC_DESTROY_MBUF: 44795fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_mbuf = 44895fab37eSRobert Watson mpe->mpe_function; 44995fab37eSRobert Watson break; 45095fab37eSRobert Watson case MAC_DESTROY_MOUNT: 45195fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_mount = 45295fab37eSRobert Watson mpe->mpe_function; 45395fab37eSRobert Watson break; 45495fab37eSRobert Watson case MAC_DESTROY_PIPE: 45595fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_pipe = 45695fab37eSRobert Watson mpe->mpe_function; 45795fab37eSRobert Watson break; 45895fab37eSRobert Watson case MAC_DESTROY_SOCKET: 45995fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_socket = 46095fab37eSRobert Watson mpe->mpe_function; 46195fab37eSRobert Watson break; 46295fab37eSRobert Watson case MAC_DESTROY_TEMP: 46395fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_temp = 46495fab37eSRobert Watson mpe->mpe_function; 46595fab37eSRobert Watson break; 46695fab37eSRobert Watson case MAC_DESTROY_VNODE: 46795fab37eSRobert Watson mpc->mpc_ops->mpo_destroy_vnode = 46895fab37eSRobert Watson mpe->mpe_function; 46995fab37eSRobert Watson break; 47095fab37eSRobert Watson case MAC_EXTERNALIZE: 47195fab37eSRobert Watson mpc->mpc_ops->mpo_externalize = 47295fab37eSRobert Watson mpe->mpe_function; 47395fab37eSRobert Watson break; 47495fab37eSRobert Watson case MAC_INTERNALIZE: 47595fab37eSRobert Watson mpc->mpc_ops->mpo_internalize = 47695fab37eSRobert Watson mpe->mpe_function; 47795fab37eSRobert Watson break; 47895fab37eSRobert Watson case MAC_CREATE_DEVFS_DEVICE: 47995fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_device = 48095fab37eSRobert Watson mpe->mpe_function; 48195fab37eSRobert Watson break; 48295fab37eSRobert Watson case MAC_CREATE_DEVFS_DIRECTORY: 48395fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_directory = 48495fab37eSRobert Watson mpe->mpe_function; 48595fab37eSRobert Watson break; 48695fab37eSRobert Watson case MAC_CREATE_DEVFS_VNODE: 48795fab37eSRobert Watson mpc->mpc_ops->mpo_create_devfs_vnode = 48895fab37eSRobert Watson mpe->mpe_function; 48995fab37eSRobert Watson break; 49095fab37eSRobert Watson case MAC_STDCREATEVNODE_EA: 49195fab37eSRobert Watson mpc->mpc_ops->mpo_stdcreatevnode_ea = 49295fab37eSRobert Watson mpe->mpe_function; 49395fab37eSRobert Watson break; 49495fab37eSRobert Watson case MAC_CREATE_VNODE: 49595fab37eSRobert Watson mpc->mpc_ops->mpo_create_vnode = 49695fab37eSRobert Watson mpe->mpe_function; 49795fab37eSRobert Watson break; 49895fab37eSRobert Watson case MAC_CREATE_MOUNT: 49995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mount = 50095fab37eSRobert Watson mpe->mpe_function; 50195fab37eSRobert Watson break; 50295fab37eSRobert Watson case MAC_CREATE_ROOT_MOUNT: 50395fab37eSRobert Watson mpc->mpc_ops->mpo_create_root_mount = 50495fab37eSRobert Watson mpe->mpe_function; 50595fab37eSRobert Watson break; 50695fab37eSRobert Watson case MAC_RELABEL_VNODE: 50795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_vnode = 50895fab37eSRobert Watson mpe->mpe_function; 50995fab37eSRobert Watson break; 51095fab37eSRobert Watson case MAC_UPDATE_DEVFSDIRENT: 51195fab37eSRobert Watson mpc->mpc_ops->mpo_update_devfsdirent = 51295fab37eSRobert Watson mpe->mpe_function; 51395fab37eSRobert Watson break; 51495fab37eSRobert Watson case MAC_UPDATE_PROCFSVNODE: 51595fab37eSRobert Watson mpc->mpc_ops->mpo_update_procfsvnode = 51695fab37eSRobert Watson mpe->mpe_function; 51795fab37eSRobert Watson break; 51895fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTATTR: 51995fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_extattr = 52095fab37eSRobert Watson mpe->mpe_function; 52195fab37eSRobert Watson break; 52295fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_EXTERNALIZED: 52395fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_externalized = 52495fab37eSRobert Watson mpe->mpe_function; 52595fab37eSRobert Watson break; 52695fab37eSRobert Watson case MAC_UPDATE_VNODE_FROM_MOUNT: 52795fab37eSRobert Watson mpc->mpc_ops->mpo_update_vnode_from_mount = 52895fab37eSRobert Watson mpe->mpe_function; 52995fab37eSRobert Watson break; 53095fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_SOCKET: 53195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_socket = 53295fab37eSRobert Watson mpe->mpe_function; 53395fab37eSRobert Watson break; 53495fab37eSRobert Watson case MAC_CREATE_PIPE: 53595fab37eSRobert Watson mpc->mpc_ops->mpo_create_pipe = 53695fab37eSRobert Watson mpe->mpe_function; 53795fab37eSRobert Watson break; 53895fab37eSRobert Watson case MAC_CREATE_SOCKET: 53995fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket = 54095fab37eSRobert Watson mpe->mpe_function; 54195fab37eSRobert Watson break; 54295fab37eSRobert Watson case MAC_CREATE_SOCKET_FROM_SOCKET: 54395fab37eSRobert Watson mpc->mpc_ops->mpo_create_socket_from_socket = 54495fab37eSRobert Watson mpe->mpe_function; 54595fab37eSRobert Watson break; 54695fab37eSRobert Watson case MAC_RELABEL_PIPE: 54795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_pipe = 54895fab37eSRobert Watson mpe->mpe_function; 54995fab37eSRobert Watson break; 55095fab37eSRobert Watson case MAC_RELABEL_SOCKET: 55195fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_socket = 55295fab37eSRobert Watson mpe->mpe_function; 55395fab37eSRobert Watson break; 55495fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_MBUF: 55595fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_mbuf = 55695fab37eSRobert Watson mpe->mpe_function; 55795fab37eSRobert Watson break; 55895fab37eSRobert Watson case MAC_SET_SOCKET_PEER_FROM_SOCKET: 55995fab37eSRobert Watson mpc->mpc_ops->mpo_set_socket_peer_from_socket = 56095fab37eSRobert Watson mpe->mpe_function; 56195fab37eSRobert Watson break; 56295fab37eSRobert Watson case MAC_CREATE_BPFDESC: 56395fab37eSRobert Watson mpc->mpc_ops->mpo_create_bpfdesc = 56495fab37eSRobert Watson mpe->mpe_function; 56595fab37eSRobert Watson break; 56695fab37eSRobert Watson case MAC_CREATE_DATAGRAM_FROM_IPQ: 56795fab37eSRobert Watson mpc->mpc_ops->mpo_create_datagram_from_ipq = 56895fab37eSRobert Watson mpe->mpe_function; 56995fab37eSRobert Watson break; 57095fab37eSRobert Watson case MAC_CREATE_FRAGMENT: 57195fab37eSRobert Watson mpc->mpc_ops->mpo_create_fragment = 57295fab37eSRobert Watson mpe->mpe_function; 57395fab37eSRobert Watson break; 57495fab37eSRobert Watson case MAC_CREATE_IFNET: 57595fab37eSRobert Watson mpc->mpc_ops->mpo_create_ifnet = 57695fab37eSRobert Watson mpe->mpe_function; 57795fab37eSRobert Watson break; 57895fab37eSRobert Watson case MAC_CREATE_IPQ: 57995fab37eSRobert Watson mpc->mpc_ops->mpo_create_ipq = 58095fab37eSRobert Watson mpe->mpe_function; 58195fab37eSRobert Watson break; 58295fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_MBUF: 58395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_mbuf = 58495fab37eSRobert Watson mpe->mpe_function; 58595fab37eSRobert Watson break; 58695fab37eSRobert Watson case MAC_CREATE_MBUF_LINKLAYER: 58795fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_linklayer = 58895fab37eSRobert Watson mpe->mpe_function; 58995fab37eSRobert Watson break; 59095fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_BPFDESC: 59195fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_bpfdesc = 59295fab37eSRobert Watson mpe->mpe_function; 59395fab37eSRobert Watson break; 59495fab37eSRobert Watson case MAC_CREATE_MBUF_FROM_IFNET: 59595fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_from_ifnet = 59695fab37eSRobert Watson mpe->mpe_function; 59795fab37eSRobert Watson break; 59895fab37eSRobert Watson case MAC_CREATE_MBUF_MULTICAST_ENCAP: 59995fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_multicast_encap = 60095fab37eSRobert Watson mpe->mpe_function; 60195fab37eSRobert Watson break; 60295fab37eSRobert Watson case MAC_CREATE_MBUF_NETLAYER: 60395fab37eSRobert Watson mpc->mpc_ops->mpo_create_mbuf_netlayer = 60495fab37eSRobert Watson mpe->mpe_function; 60595fab37eSRobert Watson break; 60695fab37eSRobert Watson case MAC_FRAGMENT_MATCH: 60795fab37eSRobert Watson mpc->mpc_ops->mpo_fragment_match = 60895fab37eSRobert Watson mpe->mpe_function; 60995fab37eSRobert Watson break; 61095fab37eSRobert Watson case MAC_RELABEL_IFNET: 61195fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_ifnet = 61295fab37eSRobert Watson mpe->mpe_function; 61395fab37eSRobert Watson break; 61495fab37eSRobert Watson case MAC_UPDATE_IPQ: 61595fab37eSRobert Watson mpc->mpc_ops->mpo_update_ipq = 61695fab37eSRobert Watson mpe->mpe_function; 61795fab37eSRobert Watson break; 61895fab37eSRobert Watson case MAC_CREATE_CRED: 61995fab37eSRobert Watson mpc->mpc_ops->mpo_create_cred = 62095fab37eSRobert Watson mpe->mpe_function; 62195fab37eSRobert Watson break; 62295fab37eSRobert Watson case MAC_EXECVE_TRANSITION: 62395fab37eSRobert Watson mpc->mpc_ops->mpo_execve_transition = 62495fab37eSRobert Watson mpe->mpe_function; 62595fab37eSRobert Watson break; 62695fab37eSRobert Watson case MAC_EXECVE_WILL_TRANSITION: 62795fab37eSRobert Watson mpc->mpc_ops->mpo_execve_will_transition = 62895fab37eSRobert Watson mpe->mpe_function; 62995fab37eSRobert Watson break; 63095fab37eSRobert Watson case MAC_CREATE_PROC0: 63195fab37eSRobert Watson mpc->mpc_ops->mpo_create_proc0 = mpe->mpe_function; 63295fab37eSRobert Watson break; 63395fab37eSRobert Watson case MAC_CREATE_PROC1: 63495fab37eSRobert Watson mpc->mpc_ops->mpo_create_proc1 = mpe->mpe_function; 63595fab37eSRobert Watson break; 63695fab37eSRobert Watson case MAC_RELABEL_CRED: 63795fab37eSRobert Watson mpc->mpc_ops->mpo_relabel_cred = 63895fab37eSRobert Watson mpe->mpe_function; 63995fab37eSRobert Watson break; 64095fab37eSRobert Watson case MAC_CHECK_BPFDESC_RECEIVE: 64195fab37eSRobert Watson mpc->mpc_ops->mpo_check_bpfdesc_receive = 64295fab37eSRobert Watson mpe->mpe_function; 64395fab37eSRobert Watson break; 64495fab37eSRobert Watson case MAC_CHECK_CRED_RELABEL: 64595fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_relabel = 64695fab37eSRobert Watson mpe->mpe_function; 64795fab37eSRobert Watson break; 64895fab37eSRobert Watson case MAC_CHECK_CRED_VISIBLE: 64995fab37eSRobert Watson mpc->mpc_ops->mpo_check_cred_visible = 65095fab37eSRobert Watson mpe->mpe_function; 65195fab37eSRobert Watson break; 65295fab37eSRobert Watson case MAC_CHECK_IFNET_RELABEL: 65395fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_relabel = 65495fab37eSRobert Watson mpe->mpe_function; 65595fab37eSRobert Watson break; 65695fab37eSRobert Watson case MAC_CHECK_IFNET_TRANSMIT: 65795fab37eSRobert Watson mpc->mpc_ops->mpo_check_ifnet_transmit = 65895fab37eSRobert Watson mpe->mpe_function; 65995fab37eSRobert Watson break; 66095fab37eSRobert Watson case MAC_CHECK_MOUNT_STAT: 66195fab37eSRobert Watson mpc->mpc_ops->mpo_check_mount_stat = 66295fab37eSRobert Watson mpe->mpe_function; 66395fab37eSRobert Watson break; 66495fab37eSRobert Watson case MAC_CHECK_PIPE_IOCTL: 66595fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_ioctl = 66695fab37eSRobert Watson mpe->mpe_function; 66795fab37eSRobert Watson break; 66895fab37eSRobert Watson case MAC_CHECK_PIPE_OP: 66995fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_op = 67095fab37eSRobert Watson mpe->mpe_function; 67195fab37eSRobert Watson break; 67295fab37eSRobert Watson case MAC_CHECK_PIPE_RELABEL: 67395fab37eSRobert Watson mpc->mpc_ops->mpo_check_pipe_relabel = 67495fab37eSRobert Watson mpe->mpe_function; 67595fab37eSRobert Watson break; 67695fab37eSRobert Watson case MAC_CHECK_PROC_DEBUG: 67795fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_debug = 67895fab37eSRobert Watson mpe->mpe_function; 67995fab37eSRobert Watson break; 68095fab37eSRobert Watson case MAC_CHECK_PROC_SCHED: 68195fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_sched = 68295fab37eSRobert Watson mpe->mpe_function; 68395fab37eSRobert Watson break; 68495fab37eSRobert Watson case MAC_CHECK_PROC_SIGNAL: 68595fab37eSRobert Watson mpc->mpc_ops->mpo_check_proc_signal = 68695fab37eSRobert Watson mpe->mpe_function; 68795fab37eSRobert Watson break; 68895fab37eSRobert Watson case MAC_CHECK_SOCKET_BIND: 68995fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_bind = 69095fab37eSRobert Watson mpe->mpe_function; 69195fab37eSRobert Watson break; 69295fab37eSRobert Watson case MAC_CHECK_SOCKET_CONNECT: 69395fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_connect = 69495fab37eSRobert Watson mpe->mpe_function; 69595fab37eSRobert Watson break; 69695fab37eSRobert Watson case MAC_CHECK_SOCKET_LISTEN: 69795fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_listen = 69895fab37eSRobert Watson mpe->mpe_function; 69995fab37eSRobert Watson break; 70095fab37eSRobert Watson case MAC_CHECK_SOCKET_RECEIVE: 70195fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_receive = 70295fab37eSRobert Watson mpe->mpe_function; 70395fab37eSRobert Watson break; 70495fab37eSRobert Watson case MAC_CHECK_SOCKET_RELABEL: 70595fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_relabel = 70695fab37eSRobert Watson mpe->mpe_function; 70795fab37eSRobert Watson break; 70895fab37eSRobert Watson case MAC_CHECK_SOCKET_VISIBLE: 70995fab37eSRobert Watson mpc->mpc_ops->mpo_check_socket_visible = 71095fab37eSRobert Watson mpe->mpe_function; 71195fab37eSRobert Watson break; 71295fab37eSRobert Watson case MAC_CHECK_VNODE_ACCESS: 71395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_access = 71495fab37eSRobert Watson mpe->mpe_function; 71595fab37eSRobert Watson break; 71695fab37eSRobert Watson case MAC_CHECK_VNODE_CHDIR: 71795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chdir = 71895fab37eSRobert Watson mpe->mpe_function; 71995fab37eSRobert Watson break; 72095fab37eSRobert Watson case MAC_CHECK_VNODE_CHROOT: 72195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_chroot = 72295fab37eSRobert Watson mpe->mpe_function; 72395fab37eSRobert Watson break; 72495fab37eSRobert Watson case MAC_CHECK_VNODE_CREATE: 72595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_create = 72695fab37eSRobert Watson mpe->mpe_function; 72795fab37eSRobert Watson break; 72895fab37eSRobert Watson case MAC_CHECK_VNODE_DELETE: 72995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_delete = 73095fab37eSRobert Watson mpe->mpe_function; 73195fab37eSRobert Watson break; 73295fab37eSRobert Watson case MAC_CHECK_VNODE_DELETEACL: 73395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_deleteacl = 73495fab37eSRobert Watson mpe->mpe_function; 73595fab37eSRobert Watson break; 73695fab37eSRobert Watson case MAC_CHECK_VNODE_EXEC: 73795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_exec = 73895fab37eSRobert Watson mpe->mpe_function; 73995fab37eSRobert Watson break; 74095fab37eSRobert Watson case MAC_CHECK_VNODE_GETACL: 74195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getacl = 74295fab37eSRobert Watson mpe->mpe_function; 74395fab37eSRobert Watson break; 74495fab37eSRobert Watson case MAC_CHECK_VNODE_GETEXTATTR: 74595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_getextattr = 74695fab37eSRobert Watson mpe->mpe_function; 74795fab37eSRobert Watson break; 74895fab37eSRobert Watson case MAC_CHECK_VNODE_LOOKUP: 74995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_lookup = 75095fab37eSRobert Watson mpe->mpe_function; 75195fab37eSRobert Watson break; 75295fab37eSRobert Watson case MAC_CHECK_VNODE_MMAP_PERMS: 75395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_mmap_perms = 75495fab37eSRobert Watson mpe->mpe_function; 75595fab37eSRobert Watson break; 75695fab37eSRobert Watson case MAC_CHECK_VNODE_OP: 75795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_op = 75895fab37eSRobert Watson mpe->mpe_function; 75995fab37eSRobert Watson break; 76095fab37eSRobert Watson case MAC_CHECK_VNODE_OPEN: 76195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_open = 76295fab37eSRobert Watson mpe->mpe_function; 76395fab37eSRobert Watson break; 76495fab37eSRobert Watson case MAC_CHECK_VNODE_READDIR: 76595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readdir = 76695fab37eSRobert Watson mpe->mpe_function; 76795fab37eSRobert Watson break; 76895fab37eSRobert Watson case MAC_CHECK_VNODE_READLINK: 76995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_readlink = 77095fab37eSRobert Watson mpe->mpe_function; 77195fab37eSRobert Watson break; 77295fab37eSRobert Watson case MAC_CHECK_VNODE_RELABEL: 77395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_relabel = 77495fab37eSRobert Watson mpe->mpe_function; 77595fab37eSRobert Watson break; 77695fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_FROM: 77795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_from = 77895fab37eSRobert Watson mpe->mpe_function; 77995fab37eSRobert Watson break; 78095fab37eSRobert Watson case MAC_CHECK_VNODE_RENAME_TO: 78195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_rename_to = 78295fab37eSRobert Watson mpe->mpe_function; 78395fab37eSRobert Watson break; 78495fab37eSRobert Watson case MAC_CHECK_VNODE_REVOKE: 78595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_revoke = 78695fab37eSRobert Watson mpe->mpe_function; 78795fab37eSRobert Watson break; 78895fab37eSRobert Watson case MAC_CHECK_VNODE_SETACL: 78995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setacl = 79095fab37eSRobert Watson mpe->mpe_function; 79195fab37eSRobert Watson break; 79295fab37eSRobert Watson case MAC_CHECK_VNODE_SETEXTATTR: 79395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setextattr = 79495fab37eSRobert Watson mpe->mpe_function; 79595fab37eSRobert Watson break; 79695fab37eSRobert Watson case MAC_CHECK_VNODE_SETFLAGS: 79795fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setflags = 79895fab37eSRobert Watson mpe->mpe_function; 79995fab37eSRobert Watson break; 80095fab37eSRobert Watson case MAC_CHECK_VNODE_SETMODE: 80195fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setmode = 80295fab37eSRobert Watson mpe->mpe_function; 80395fab37eSRobert Watson break; 80495fab37eSRobert Watson case MAC_CHECK_VNODE_SETOWNER: 80595fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setowner = 80695fab37eSRobert Watson mpe->mpe_function; 80795fab37eSRobert Watson break; 80895fab37eSRobert Watson case MAC_CHECK_VNODE_SETUTIMES: 80995fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_setutimes = 81095fab37eSRobert Watson mpe->mpe_function; 81195fab37eSRobert Watson break; 81295fab37eSRobert Watson case MAC_CHECK_VNODE_STAT: 81395fab37eSRobert Watson mpc->mpc_ops->mpo_check_vnode_stat = 81495fab37eSRobert Watson mpe->mpe_function; 81595fab37eSRobert Watson break; 81695fab37eSRobert Watson /* 81795fab37eSRobert Watson default: 81895fab37eSRobert Watson printf("MAC policy `%s': unknown operation %d\n", 81995fab37eSRobert Watson mpc->mpc_name, mpe->mpe_constant); 82095fab37eSRobert Watson return (EINVAL); 82195fab37eSRobert Watson */ 82295fab37eSRobert Watson } 82395fab37eSRobert Watson } 82495fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 82595fab37eSRobert Watson if (mac_policy_list_busy > 0) { 82695fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 82795fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 82895fab37eSRobert Watson mpc->mpc_ops = NULL; 82995fab37eSRobert Watson return (EBUSY); 83095fab37eSRobert Watson } 83195fab37eSRobert Watson LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) { 83295fab37eSRobert Watson if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) { 83395fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 83495fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 83595fab37eSRobert Watson mpc->mpc_ops = NULL; 83695fab37eSRobert Watson return (EEXIST); 83795fab37eSRobert Watson } 83895fab37eSRobert Watson } 83995fab37eSRobert Watson if (mpc->mpc_field_off != NULL) { 84095fab37eSRobert Watson slot = ffs(mac_policy_offsets_free); 84195fab37eSRobert Watson if (slot == 0) { 84295fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 84395fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 84495fab37eSRobert Watson mpc->mpc_ops = NULL; 84595fab37eSRobert Watson return (ENOMEM); 84695fab37eSRobert Watson } 84795fab37eSRobert Watson slot--; 84895fab37eSRobert Watson mac_policy_offsets_free &= ~(1 << slot); 84995fab37eSRobert Watson *mpc->mpc_field_off = slot; 85095fab37eSRobert Watson } 85195fab37eSRobert Watson mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED; 85295fab37eSRobert Watson LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list); 85395fab37eSRobert Watson 85495fab37eSRobert Watson /* Per-policy initialization. */ 85595fab37eSRobert Watson if (mpc->mpc_ops->mpo_init != NULL) 85695fab37eSRobert Watson (*(mpc->mpc_ops->mpo_init))(mpc); 85795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 85895fab37eSRobert Watson 85995fab37eSRobert Watson printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname, 86095fab37eSRobert Watson mpc->mpc_name); 86195fab37eSRobert Watson 86295fab37eSRobert Watson return (0); 86395fab37eSRobert Watson } 86495fab37eSRobert Watson 86595fab37eSRobert Watson static int 86695fab37eSRobert Watson mac_policy_unregister(struct mac_policy_conf *mpc) 86795fab37eSRobert Watson { 86895fab37eSRobert Watson 86995fab37eSRobert Watson #if 0 87095fab37eSRobert Watson /* 87195fab37eSRobert Watson * Don't allow unloading modules with private data. 87295fab37eSRobert Watson */ 87395fab37eSRobert Watson if (mpc->mpc_field_off != NULL) 87495fab37eSRobert Watson return (EBUSY); 87595fab37eSRobert Watson #endif 87695fab37eSRobert Watson if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) 87795fab37eSRobert Watson return (EBUSY); 87895fab37eSRobert Watson MAC_POLICY_LIST_LOCK(); 87995fab37eSRobert Watson if (mac_policy_list_busy > 0) { 88095fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 88195fab37eSRobert Watson return (EBUSY); 88295fab37eSRobert Watson } 88395fab37eSRobert Watson if (mpc->mpc_ops->mpo_destroy != NULL) 88495fab37eSRobert Watson (*(mpc->mpc_ops->mpo_destroy))(mpc); 88595fab37eSRobert Watson 88695fab37eSRobert Watson LIST_REMOVE(mpc, mpc_list); 88795fab37eSRobert Watson MAC_POLICY_LIST_UNLOCK(); 88895fab37eSRobert Watson 88995fab37eSRobert Watson FREE(mpc->mpc_ops, M_MACOPVEC); 89095fab37eSRobert Watson mpc->mpc_ops = NULL; 89195fab37eSRobert Watson 89295fab37eSRobert Watson printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname, 89395fab37eSRobert Watson mpc->mpc_name); 89495fab37eSRobert Watson 89595fab37eSRobert Watson return (0); 89695fab37eSRobert Watson } 89795fab37eSRobert Watson 89895fab37eSRobert Watson /* 89995fab37eSRobert Watson * Define an error value precedence, and given two arguments, selects the 90095fab37eSRobert Watson * value with the higher precedence. 90195fab37eSRobert Watson */ 90295fab37eSRobert Watson static int 90395fab37eSRobert Watson error_select(int error1, int error2) 90495fab37eSRobert Watson { 90595fab37eSRobert Watson 90695fab37eSRobert Watson /* Certain decision-making errors take top priority. */ 90795fab37eSRobert Watson if (error1 == EDEADLK || error2 == EDEADLK) 90895fab37eSRobert Watson return (EDEADLK); 90995fab37eSRobert Watson 91095fab37eSRobert Watson /* Invalid arguments should be reported where possible. */ 91195fab37eSRobert Watson if (error1 == EINVAL || error2 == EINVAL) 91295fab37eSRobert Watson return (EINVAL); 91395fab37eSRobert Watson 91495fab37eSRobert Watson /* Precedence goes to "visibility", with both process and file. */ 91595fab37eSRobert Watson if (error1 == ESRCH || error2 == ESRCH) 91695fab37eSRobert Watson return (ESRCH); 91795fab37eSRobert Watson 91895fab37eSRobert Watson if (error1 == ENOENT || error2 == ENOENT) 91995fab37eSRobert Watson return (ENOENT); 92095fab37eSRobert Watson 92195fab37eSRobert Watson /* Precedence goes to DAC/MAC protections. */ 92295fab37eSRobert Watson if (error1 == EACCES || error2 == EACCES) 92395fab37eSRobert Watson return (EACCES); 92495fab37eSRobert Watson 92595fab37eSRobert Watson /* Precedence goes to privilege. */ 92695fab37eSRobert Watson if (error1 == EPERM || error2 == EPERM) 92795fab37eSRobert Watson return (EPERM); 92895fab37eSRobert Watson 92995fab37eSRobert Watson /* Precedence goes to error over success; otherwise, arbitrary. */ 93095fab37eSRobert Watson if (error1 != 0) 93195fab37eSRobert Watson return (error1); 93295fab37eSRobert Watson return (error2); 93395fab37eSRobert Watson } 93495fab37eSRobert Watson 93595fab37eSRobert Watson void 93695fab37eSRobert Watson mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp) 93795fab37eSRobert Watson { 93895fab37eSRobert Watson 93995fab37eSRobert Watson MAC_PERFORM(update_devfsdirent, de, &de->de_label, vp, &vp->v_label); 94095fab37eSRobert Watson } 94195fab37eSRobert Watson 94295fab37eSRobert Watson void 94395fab37eSRobert Watson mac_update_procfsvnode(struct vnode *vp, struct ucred *cred) 94495fab37eSRobert Watson { 94595fab37eSRobert Watson 94695fab37eSRobert Watson MAC_PERFORM(update_procfsvnode, vp, &vp->v_label, cred); 94795fab37eSRobert Watson } 94895fab37eSRobert Watson 94995fab37eSRobert Watson /* 95095fab37eSRobert Watson * Support callout for policies that manage their own externalization 95195fab37eSRobert Watson * using extended attributes. 95295fab37eSRobert Watson */ 95395fab37eSRobert Watson static int 95495fab37eSRobert Watson mac_update_vnode_from_extattr(struct vnode *vp, struct mount *mp) 95595fab37eSRobert Watson { 95695fab37eSRobert Watson int error; 95795fab37eSRobert Watson 95895fab37eSRobert Watson MAC_CHECK(update_vnode_from_extattr, vp, &vp->v_label, mp, 95995fab37eSRobert Watson &mp->mnt_fslabel); 96095fab37eSRobert Watson 96195fab37eSRobert Watson return (error); 96295fab37eSRobert Watson } 96395fab37eSRobert Watson 96495fab37eSRobert Watson /* 96595fab37eSRobert Watson * Given an externalized mac label, internalize it and stamp it on a 96695fab37eSRobert Watson * vnode. 96795fab37eSRobert Watson */ 96895fab37eSRobert Watson static int 96995fab37eSRobert Watson mac_update_vnode_from_externalized(struct vnode *vp, struct mac *extmac) 97095fab37eSRobert Watson { 97195fab37eSRobert Watson int error; 97295fab37eSRobert Watson 97395fab37eSRobert Watson MAC_CHECK(update_vnode_from_externalized, vp, &vp->v_label, extmac); 97495fab37eSRobert Watson 97595fab37eSRobert Watson return (error); 97695fab37eSRobert Watson } 97795fab37eSRobert Watson 97895fab37eSRobert Watson /* 97995fab37eSRobert Watson * Call out to individual policies to update the label in a vnode from 98095fab37eSRobert Watson * the mountpoint. 98195fab37eSRobert Watson */ 98295fab37eSRobert Watson void 98395fab37eSRobert Watson mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp) 98495fab37eSRobert Watson { 98595fab37eSRobert Watson 98695fab37eSRobert Watson MAC_PERFORM(update_vnode_from_mount, vp, &vp->v_label, mp, 98795fab37eSRobert Watson &mp->mnt_fslabel); 98895fab37eSRobert Watson 989e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(vp, "mac_update_vnode_from_mount"); 99095fab37eSRobert Watson if (mac_cache_fslabel_in_vnode) 991e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 99295fab37eSRobert Watson } 99395fab37eSRobert Watson 99495fab37eSRobert Watson /* 99595fab37eSRobert Watson * Implementation of VOP_REFRESHLABEL() that relies on extended attributes 99695fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 99795fab37eSRobert Watson * extended attributes. 99895fab37eSRobert Watson */ 99995fab37eSRobert Watson int 100095fab37eSRobert Watson vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap) 100195fab37eSRobert Watson { 100295fab37eSRobert Watson struct vnode *vp = ap->a_vp; 100395fab37eSRobert Watson struct mac extmac; 100495fab37eSRobert Watson int buflen, error; 100595fab37eSRobert Watson 100695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdrefreshlabel_ea"); 100795fab37eSRobert Watson 100895fab37eSRobert Watson /* 100995fab37eSRobert Watson * Call out to external policies first. Order doesn't really 101095fab37eSRobert Watson * matter, as long as failure of one assures failure of all. 101195fab37eSRobert Watson */ 101295fab37eSRobert Watson error = mac_update_vnode_from_extattr(vp, vp->v_mount); 101395fab37eSRobert Watson if (error) 101495fab37eSRobert Watson return (error); 101595fab37eSRobert Watson 101695fab37eSRobert Watson buflen = sizeof(extmac); 101795fab37eSRobert Watson error = vn_extattr_get(vp, IO_NODELOCKED, 101895fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, &buflen, 101995fab37eSRobert Watson (char *)&extmac, curthread); 102095fab37eSRobert Watson switch (error) { 102195fab37eSRobert Watson case 0: 102295fab37eSRobert Watson /* Got it */ 102395fab37eSRobert Watson break; 102495fab37eSRobert Watson 102595fab37eSRobert Watson case ENOATTR: 102695fab37eSRobert Watson /* 102795fab37eSRobert Watson * Use the label from the mount point. 102895fab37eSRobert Watson */ 102995fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 103095fab37eSRobert Watson return (0); 103195fab37eSRobert Watson 103295fab37eSRobert Watson case EOPNOTSUPP: 103395fab37eSRobert Watson default: 103495fab37eSRobert Watson /* Fail horribly. */ 103595fab37eSRobert Watson return (error); 103695fab37eSRobert Watson } 103795fab37eSRobert Watson 103895fab37eSRobert Watson if (buflen != sizeof(extmac)) 103995fab37eSRobert Watson error = EPERM; /* Fail very closed. */ 104095fab37eSRobert Watson if (error == 0) 104195fab37eSRobert Watson error = mac_update_vnode_from_externalized(vp, &extmac); 104295fab37eSRobert Watson if (error == 0) 1043e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 104495fab37eSRobert Watson else { 104595fab37eSRobert Watson struct vattr va; 104695fab37eSRobert Watson 104795fab37eSRobert Watson printf("Corrupted label on %s", 104895fab37eSRobert Watson vp->v_mount->mnt_stat.f_mntonname); 104995fab37eSRobert Watson if (VOP_GETATTR(vp, &va, curthread->td_ucred, curthread) == 0) 105095fab37eSRobert Watson printf(" inum %ld", va.va_fileid); 105195fab37eSRobert Watson if (mac_debug_label_fallback) { 105295fab37eSRobert Watson printf(", falling back.\n"); 105395fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 105495fab37eSRobert Watson error = 0; 105595fab37eSRobert Watson } else { 105695fab37eSRobert Watson printf(".\n"); 105795fab37eSRobert Watson error = EPERM; 105895fab37eSRobert Watson } 105995fab37eSRobert Watson } 106095fab37eSRobert Watson 106195fab37eSRobert Watson return (error); 106295fab37eSRobert Watson } 106395fab37eSRobert Watson 106495fab37eSRobert Watson /* 106595fab37eSRobert Watson * Make sure the vnode label is up-to-date. If EOPNOTSUPP, then we handle 106695fab37eSRobert Watson * the labeling activity outselves. Filesystems should be careful not 106795fab37eSRobert Watson * to change their minds regarding whether they support vop_refreshlabel() 106895fab37eSRobert Watson * for a vnode or not. Don't cache the vnode here, allow the file 106995fab37eSRobert Watson * system code to determine if it's safe to cache. If we update from 107095fab37eSRobert Watson * the mount, don't cache since a change to the mount label should affect 107195fab37eSRobert Watson * all vnodes. 107295fab37eSRobert Watson */ 107395fab37eSRobert Watson static int 107495fab37eSRobert Watson vn_refreshlabel(struct vnode *vp, struct ucred *cred) 107595fab37eSRobert Watson { 107695fab37eSRobert Watson int error; 107795fab37eSRobert Watson 107895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vn_refreshlabel"); 107995fab37eSRobert Watson 108095fab37eSRobert Watson if (vp->v_mount == NULL) { 108195fab37eSRobert Watson /* 108295fab37eSRobert Watson Eventually, we probably want to special-case refreshing 108395fab37eSRobert Watson of deadfs vnodes, and if there's a lock-free race somewhere, 108495fab37eSRobert Watson that case might be handled here. 108595fab37eSRobert Watson 108695fab37eSRobert Watson mac_update_vnode_deadfs(vp); 108795fab37eSRobert Watson return (0); 108895fab37eSRobert Watson */ 108995fab37eSRobert Watson /* printf("vn_refreshlabel: null v_mount\n"); */ 109095fab37eSRobert Watson if (vp->v_tag != VT_NON) 109195fab37eSRobert Watson printf( 109295fab37eSRobert Watson "vn_refreshlabel: null v_mount with non-VT_NON\n"); 109395fab37eSRobert Watson return (EBADF); 109495fab37eSRobert Watson } 109595fab37eSRobert Watson 1096e6e370a7SJeff Roberson if (vp->v_vflag & VV_CACHEDLABEL) { 109795fab37eSRobert Watson mac_vnode_label_cache_hits++; 109895fab37eSRobert Watson return (0); 109995fab37eSRobert Watson } else 110095fab37eSRobert Watson mac_vnode_label_cache_misses++; 110195fab37eSRobert Watson 110295fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 110395fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 110495fab37eSRobert Watson return (0); 110595fab37eSRobert Watson } 110695fab37eSRobert Watson 110795fab37eSRobert Watson error = VOP_REFRESHLABEL(vp, cred, curthread); 110895fab37eSRobert Watson switch (error) { 110995fab37eSRobert Watson case EOPNOTSUPP: 111095fab37eSRobert Watson /* 111195fab37eSRobert Watson * If labels are not supported on this vnode, fall back to 111295fab37eSRobert Watson * the label in the mount and propagate it to the vnode. 111395fab37eSRobert Watson * There should probably be some sort of policy/flag/decision 111495fab37eSRobert Watson * about doing this. 111595fab37eSRobert Watson */ 111695fab37eSRobert Watson mac_update_vnode_from_mount(vp, vp->v_mount); 111795fab37eSRobert Watson error = 0; 111895fab37eSRobert Watson default: 111995fab37eSRobert Watson return (error); 112095fab37eSRobert Watson } 112195fab37eSRobert Watson } 112295fab37eSRobert Watson 112395fab37eSRobert Watson /* 112495fab37eSRobert Watson * Helper function for file systems using the vop_std*_ea() calls. This 112595fab37eSRobert Watson * function must be called after EA service is available for the vnode, 112695fab37eSRobert Watson * but before it's hooked up to the namespace so that the node persists 112795fab37eSRobert Watson * if there's a crash, or before it can be accessed. On successful 112895fab37eSRobert Watson * commit of the label to disk (etc), do cache the label. 112995fab37eSRobert Watson */ 113095fab37eSRobert Watson int 113195fab37eSRobert Watson vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp, struct ucred *cred) 113295fab37eSRobert Watson { 113395fab37eSRobert Watson struct mac extmac; 113495fab37eSRobert Watson int error; 113595fab37eSRobert Watson 1136e6e370a7SJeff Roberson ASSERT_VOP_LOCKED(tvp, "vop_stdcreatevnode_ea"); 113795fab37eSRobert Watson if ((dvp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) { 113895fab37eSRobert Watson mac_update_vnode_from_mount(tvp, tvp->v_mount); 113995fab37eSRobert Watson } else { 114095fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 114195fab37eSRobert Watson if (error) 114295fab37eSRobert Watson return (error); 114395fab37eSRobert Watson 114495fab37eSRobert Watson /* 114595fab37eSRobert Watson * Stick the label in the vnode. Then try to write to 114695fab37eSRobert Watson * disk. If we fail, return a failure to abort the 114795fab37eSRobert Watson * create operation. Really, this failure shouldn't 114895fab37eSRobert Watson * happen except in fairly unusual circumstances (out 114995fab37eSRobert Watson * of disk, etc). 115095fab37eSRobert Watson */ 115195fab37eSRobert Watson mac_create_vnode(cred, dvp, tvp); 115295fab37eSRobert Watson 115395fab37eSRobert Watson error = mac_stdcreatevnode_ea(tvp); 115495fab37eSRobert Watson if (error) 115595fab37eSRobert Watson return (error); 115695fab37eSRobert Watson 115795fab37eSRobert Watson /* 115895fab37eSRobert Watson * XXX: Eventually this will go away and all policies will 115995fab37eSRobert Watson * directly manage their extended attributes. 116095fab37eSRobert Watson */ 116195fab37eSRobert Watson error = mac_externalize(&tvp->v_label, &extmac); 116295fab37eSRobert Watson if (error) 116395fab37eSRobert Watson return (error); 116495fab37eSRobert Watson 116595fab37eSRobert Watson error = vn_extattr_set(tvp, IO_NODELOCKED, 116695fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 116795fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 116895fab37eSRobert Watson if (error == 0) 1169e6e370a7SJeff Roberson tvp->v_vflag |= VV_CACHEDLABEL; 117095fab37eSRobert Watson else { 117195fab37eSRobert Watson #if 0 117295fab37eSRobert Watson /* 117395fab37eSRobert Watson * In theory, we could have fall-back behavior here. 117495fab37eSRobert Watson * It would probably be incorrect. 117595fab37eSRobert Watson */ 117695fab37eSRobert Watson #endif 117795fab37eSRobert Watson return (error); 117895fab37eSRobert Watson } 117995fab37eSRobert Watson } 118095fab37eSRobert Watson 118195fab37eSRobert Watson return (0); 118295fab37eSRobert Watson } 118395fab37eSRobert Watson 118495fab37eSRobert Watson void 118595fab37eSRobert Watson mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp) 118695fab37eSRobert Watson { 118795fab37eSRobert Watson int error; 118895fab37eSRobert Watson 118995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_execve_transition"); 119095fab37eSRobert Watson 119195fab37eSRobert Watson error = vn_refreshlabel(vp, old); 119295fab37eSRobert Watson if (error) { 119395fab37eSRobert Watson printf("mac_execve_transition: vn_refreshlabel returned %d\n", 119495fab37eSRobert Watson error); 119595fab37eSRobert Watson printf("mac_execve_transition: using old vnode label\n"); 119695fab37eSRobert Watson } 119795fab37eSRobert Watson 119895fab37eSRobert Watson MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label); 119995fab37eSRobert Watson } 120095fab37eSRobert Watson 120195fab37eSRobert Watson int 120295fab37eSRobert Watson mac_execve_will_transition(struct ucred *old, struct vnode *vp) 120395fab37eSRobert Watson { 120495fab37eSRobert Watson int error, result; 120595fab37eSRobert Watson 120695fab37eSRobert Watson error = vn_refreshlabel(vp, old); 120795fab37eSRobert Watson if (error) 120895fab37eSRobert Watson return (error); 120995fab37eSRobert Watson 121095fab37eSRobert Watson result = 0; 121195fab37eSRobert Watson MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label); 121295fab37eSRobert Watson 121395fab37eSRobert Watson return (result); 121495fab37eSRobert Watson } 121595fab37eSRobert Watson 121695fab37eSRobert Watson static void 121795fab37eSRobert Watson mac_init_label(struct label *label) 121895fab37eSRobert Watson { 121995fab37eSRobert Watson 122095fab37eSRobert Watson bzero(label, sizeof(*label)); 122195fab37eSRobert Watson label->l_flags = MAC_FLAG_INITIALIZED; 122295fab37eSRobert Watson } 122395fab37eSRobert Watson 122495fab37eSRobert Watson static void 122595fab37eSRobert Watson mac_init_structmac(struct mac *mac) 122695fab37eSRobert Watson { 122795fab37eSRobert Watson 122895fab37eSRobert Watson bzero(mac, sizeof(*mac)); 122995fab37eSRobert Watson mac->m_macflags = MAC_FLAG_INITIALIZED; 123095fab37eSRobert Watson } 123195fab37eSRobert Watson 123295fab37eSRobert Watson static void 123395fab37eSRobert Watson mac_destroy_label(struct label *label) 123495fab37eSRobert Watson { 123595fab37eSRobert Watson 123695fab37eSRobert Watson KASSERT(label->l_flags & MAC_FLAG_INITIALIZED, 123795fab37eSRobert Watson ("destroying uninitialized label")); 123895fab37eSRobert Watson 123995fab37eSRobert Watson bzero(label, sizeof(*label)); 124095fab37eSRobert Watson /* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */ 124195fab37eSRobert Watson } 124295fab37eSRobert Watson 124395fab37eSRobert Watson int 124495fab37eSRobert Watson mac_init_mbuf(struct mbuf *m, int how) 124595fab37eSRobert Watson { 124695fab37eSRobert Watson KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf")); 124795fab37eSRobert Watson 124895fab37eSRobert Watson /* "how" is one of M_(TRY|DONT)WAIT */ 124995fab37eSRobert Watson mac_init_label(&m->m_pkthdr.label); 125095fab37eSRobert Watson MAC_PERFORM(init_mbuf, m, how, &m->m_pkthdr.label); 125195fab37eSRobert Watson atomic_add_int(&nmacmbufs, 1); 125295fab37eSRobert Watson return (0); 125395fab37eSRobert Watson } 125495fab37eSRobert Watson 125595fab37eSRobert Watson void 125695fab37eSRobert Watson mac_destroy_mbuf(struct mbuf *m) 125795fab37eSRobert Watson { 125895fab37eSRobert Watson 125995fab37eSRobert Watson MAC_PERFORM(destroy_mbuf, m, &m->m_pkthdr.label); 126095fab37eSRobert Watson mac_destroy_label(&m->m_pkthdr.label); 126195fab37eSRobert Watson atomic_subtract_int(&nmacmbufs, 1); 126295fab37eSRobert Watson } 126395fab37eSRobert Watson 126495fab37eSRobert Watson void 126595fab37eSRobert Watson mac_init_cred(struct ucred *cr) 126695fab37eSRobert Watson { 126795fab37eSRobert Watson 126895fab37eSRobert Watson mac_init_label(&cr->cr_label); 126995fab37eSRobert Watson MAC_PERFORM(init_cred, cr, &cr->cr_label); 127095fab37eSRobert Watson atomic_add_int(&nmaccreds, 1); 127195fab37eSRobert Watson } 127295fab37eSRobert Watson 127395fab37eSRobert Watson void 127495fab37eSRobert Watson mac_destroy_cred(struct ucred *cr) 127595fab37eSRobert Watson { 127695fab37eSRobert Watson 127795fab37eSRobert Watson MAC_PERFORM(destroy_cred, cr, &cr->cr_label); 127895fab37eSRobert Watson mac_destroy_label(&cr->cr_label); 127995fab37eSRobert Watson atomic_subtract_int(&nmaccreds, 1); 128095fab37eSRobert Watson } 128195fab37eSRobert Watson 128295fab37eSRobert Watson void 128395fab37eSRobert Watson mac_init_ifnet(struct ifnet *ifp) 128495fab37eSRobert Watson { 128595fab37eSRobert Watson 128695fab37eSRobert Watson mac_init_label(&ifp->if_label); 128795fab37eSRobert Watson MAC_PERFORM(init_ifnet, ifp, &ifp->if_label); 128895fab37eSRobert Watson atomic_add_int(&nmacifnets, 1); 128995fab37eSRobert Watson } 129095fab37eSRobert Watson 129195fab37eSRobert Watson void 129295fab37eSRobert Watson mac_destroy_ifnet(struct ifnet *ifp) 129395fab37eSRobert Watson { 129495fab37eSRobert Watson 129595fab37eSRobert Watson MAC_PERFORM(destroy_ifnet, ifp, &ifp->if_label); 129695fab37eSRobert Watson mac_destroy_label(&ifp->if_label); 129795fab37eSRobert Watson atomic_subtract_int(&nmacifnets, 1); 129895fab37eSRobert Watson } 129995fab37eSRobert Watson 130095fab37eSRobert Watson void 130195fab37eSRobert Watson mac_init_ipq(struct ipq *ipq) 130295fab37eSRobert Watson { 130395fab37eSRobert Watson 130495fab37eSRobert Watson mac_init_label(&ipq->ipq_label); 130595fab37eSRobert Watson MAC_PERFORM(init_ipq, ipq, &ipq->ipq_label); 130695fab37eSRobert Watson atomic_add_int(&nmacipqs, 1); 130795fab37eSRobert Watson } 130895fab37eSRobert Watson 130995fab37eSRobert Watson void 131095fab37eSRobert Watson mac_destroy_ipq(struct ipq *ipq) 131195fab37eSRobert Watson { 131295fab37eSRobert Watson 131395fab37eSRobert Watson MAC_PERFORM(destroy_ipq, ipq, &ipq->ipq_label); 131495fab37eSRobert Watson mac_destroy_label(&ipq->ipq_label); 131595fab37eSRobert Watson atomic_subtract_int(&nmacipqs, 1); 131695fab37eSRobert Watson } 131795fab37eSRobert Watson 131895fab37eSRobert Watson void 131995fab37eSRobert Watson mac_init_socket(struct socket *socket) 132095fab37eSRobert Watson { 132195fab37eSRobert Watson 132295fab37eSRobert Watson mac_init_label(&socket->so_label); 132395fab37eSRobert Watson mac_init_label(&socket->so_peerlabel); 132495fab37eSRobert Watson MAC_PERFORM(init_socket, socket, &socket->so_label, 132595fab37eSRobert Watson &socket->so_peerlabel); 132695fab37eSRobert Watson atomic_add_int(&nmacsockets, 1); 132795fab37eSRobert Watson } 132895fab37eSRobert Watson 132995fab37eSRobert Watson void 133095fab37eSRobert Watson mac_destroy_socket(struct socket *socket) 133195fab37eSRobert Watson { 133295fab37eSRobert Watson 133395fab37eSRobert Watson MAC_PERFORM(destroy_socket, socket, &socket->so_label, 133495fab37eSRobert Watson &socket->so_peerlabel); 133595fab37eSRobert Watson mac_destroy_label(&socket->so_label); 133695fab37eSRobert Watson mac_destroy_label(&socket->so_peerlabel); 133795fab37eSRobert Watson atomic_subtract_int(&nmacsockets, 1); 133895fab37eSRobert Watson } 133995fab37eSRobert Watson 134095fab37eSRobert Watson void 134195fab37eSRobert Watson mac_init_pipe(struct pipe *pipe) 134295fab37eSRobert Watson { 134395fab37eSRobert Watson struct label *label; 134495fab37eSRobert Watson 134595fab37eSRobert Watson label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK); 134695fab37eSRobert Watson mac_init_label(label); 134795fab37eSRobert Watson pipe->pipe_label = label; 134895fab37eSRobert Watson pipe->pipe_peer->pipe_label = label; 134995fab37eSRobert Watson MAC_PERFORM(init_pipe, pipe, pipe->pipe_label); 135095fab37eSRobert Watson atomic_add_int(&nmacpipes, 1); 135195fab37eSRobert Watson } 135295fab37eSRobert Watson 135395fab37eSRobert Watson void 135495fab37eSRobert Watson mac_destroy_pipe(struct pipe *pipe) 135595fab37eSRobert Watson { 135695fab37eSRobert Watson 135795fab37eSRobert Watson MAC_PERFORM(destroy_pipe, pipe, pipe->pipe_label); 135895fab37eSRobert Watson mac_destroy_label(pipe->pipe_label); 135995fab37eSRobert Watson free(pipe->pipe_label, M_MACPIPELABEL); 136095fab37eSRobert Watson atomic_subtract_int(&nmacpipes, 1); 136195fab37eSRobert Watson } 136295fab37eSRobert Watson 136395fab37eSRobert Watson void 136495fab37eSRobert Watson mac_init_bpfdesc(struct bpf_d *bpf_d) 136595fab37eSRobert Watson { 136695fab37eSRobert Watson 136795fab37eSRobert Watson mac_init_label(&bpf_d->bd_label); 136895fab37eSRobert Watson MAC_PERFORM(init_bpfdesc, bpf_d, &bpf_d->bd_label); 136995fab37eSRobert Watson atomic_add_int(&nmacbpfdescs, 1); 137095fab37eSRobert Watson } 137195fab37eSRobert Watson 137295fab37eSRobert Watson void 137395fab37eSRobert Watson mac_destroy_bpfdesc(struct bpf_d *bpf_d) 137495fab37eSRobert Watson { 137595fab37eSRobert Watson 137695fab37eSRobert Watson MAC_PERFORM(destroy_bpfdesc, bpf_d, &bpf_d->bd_label); 137795fab37eSRobert Watson mac_destroy_label(&bpf_d->bd_label); 137895fab37eSRobert Watson atomic_subtract_int(&nmacbpfdescs, 1); 137995fab37eSRobert Watson } 138095fab37eSRobert Watson 138195fab37eSRobert Watson void 138295fab37eSRobert Watson mac_init_mount(struct mount *mp) 138395fab37eSRobert Watson { 138495fab37eSRobert Watson 138595fab37eSRobert Watson mac_init_label(&mp->mnt_mntlabel); 138695fab37eSRobert Watson mac_init_label(&mp->mnt_fslabel); 138795fab37eSRobert Watson MAC_PERFORM(init_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 138895fab37eSRobert Watson atomic_add_int(&nmacmounts, 1); 138995fab37eSRobert Watson } 139095fab37eSRobert Watson 139195fab37eSRobert Watson void 139295fab37eSRobert Watson mac_destroy_mount(struct mount *mp) 139395fab37eSRobert Watson { 139495fab37eSRobert Watson 139595fab37eSRobert Watson MAC_PERFORM(destroy_mount, mp, &mp->mnt_mntlabel, &mp->mnt_fslabel); 139695fab37eSRobert Watson mac_destroy_label(&mp->mnt_fslabel); 139795fab37eSRobert Watson mac_destroy_label(&mp->mnt_mntlabel); 139895fab37eSRobert Watson atomic_subtract_int(&nmacmounts, 1); 139995fab37eSRobert Watson } 140095fab37eSRobert Watson 140195fab37eSRobert Watson static void 140295fab37eSRobert Watson mac_init_temp(struct label *label) 140395fab37eSRobert Watson { 140495fab37eSRobert Watson 140595fab37eSRobert Watson mac_init_label(label); 140695fab37eSRobert Watson MAC_PERFORM(init_temp, label); 140795fab37eSRobert Watson atomic_add_int(&nmactemp, 1); 140895fab37eSRobert Watson } 140995fab37eSRobert Watson 141095fab37eSRobert Watson static void 141195fab37eSRobert Watson mac_destroy_temp(struct label *label) 141295fab37eSRobert Watson { 141395fab37eSRobert Watson 141495fab37eSRobert Watson MAC_PERFORM(destroy_temp, label); 141595fab37eSRobert Watson mac_destroy_label(label); 141695fab37eSRobert Watson atomic_subtract_int(&nmactemp, 1); 141795fab37eSRobert Watson } 141895fab37eSRobert Watson 141995fab37eSRobert Watson void 142095fab37eSRobert Watson mac_init_vnode(struct vnode *vp) 142195fab37eSRobert Watson { 142295fab37eSRobert Watson 142395fab37eSRobert Watson mac_init_label(&vp->v_label); 142495fab37eSRobert Watson MAC_PERFORM(init_vnode, vp, &vp->v_label); 142595fab37eSRobert Watson atomic_add_int(&nmacvnodes, 1); 142695fab37eSRobert Watson } 142795fab37eSRobert Watson 142895fab37eSRobert Watson void 142995fab37eSRobert Watson mac_destroy_vnode(struct vnode *vp) 143095fab37eSRobert Watson { 143195fab37eSRobert Watson 143295fab37eSRobert Watson MAC_PERFORM(destroy_vnode, vp, &vp->v_label); 143395fab37eSRobert Watson mac_destroy_label(&vp->v_label); 143495fab37eSRobert Watson atomic_subtract_int(&nmacvnodes, 1); 143595fab37eSRobert Watson } 143695fab37eSRobert Watson 143795fab37eSRobert Watson void 143895fab37eSRobert Watson mac_init_devfsdirent(struct devfs_dirent *de) 143995fab37eSRobert Watson { 144095fab37eSRobert Watson 144195fab37eSRobert Watson mac_init_label(&de->de_label); 144295fab37eSRobert Watson MAC_PERFORM(init_devfsdirent, de, &de->de_label); 144395fab37eSRobert Watson atomic_add_int(&nmacdevfsdirents, 1); 144495fab37eSRobert Watson } 144595fab37eSRobert Watson 144695fab37eSRobert Watson void 144795fab37eSRobert Watson mac_destroy_devfsdirent(struct devfs_dirent *de) 144895fab37eSRobert Watson { 144995fab37eSRobert Watson 145095fab37eSRobert Watson MAC_PERFORM(destroy_devfsdirent, de, &de->de_label); 145195fab37eSRobert Watson mac_destroy_label(&de->de_label); 145295fab37eSRobert Watson atomic_subtract_int(&nmacdevfsdirents, 1); 145395fab37eSRobert Watson } 145495fab37eSRobert Watson 145595fab37eSRobert Watson static int 145695fab37eSRobert Watson mac_externalize(struct label *label, struct mac *mac) 145795fab37eSRobert Watson { 145895fab37eSRobert Watson int error; 145995fab37eSRobert Watson 146095fab37eSRobert Watson mac_init_structmac(mac); 146195fab37eSRobert Watson MAC_CHECK(externalize, label, mac); 146295fab37eSRobert Watson 146395fab37eSRobert Watson return (error); 146495fab37eSRobert Watson } 146595fab37eSRobert Watson 146695fab37eSRobert Watson static int 146795fab37eSRobert Watson mac_internalize(struct label *label, struct mac *mac) 146895fab37eSRobert Watson { 146995fab37eSRobert Watson int error; 147095fab37eSRobert Watson 147195fab37eSRobert Watson mac_init_temp(label); 147295fab37eSRobert Watson MAC_CHECK(internalize, label, mac); 147395fab37eSRobert Watson if (error) 147495fab37eSRobert Watson mac_destroy_temp(label); 147595fab37eSRobert Watson 147695fab37eSRobert Watson return (error); 147795fab37eSRobert Watson } 147895fab37eSRobert Watson 147995fab37eSRobert Watson /* 148095fab37eSRobert Watson * Initialize MAC label for the first kernel process, from which other 148195fab37eSRobert Watson * kernel processes and threads are spawned. 148295fab37eSRobert Watson */ 148395fab37eSRobert Watson void 148495fab37eSRobert Watson mac_create_proc0(struct ucred *cred) 148595fab37eSRobert Watson { 148695fab37eSRobert Watson 148795fab37eSRobert Watson MAC_PERFORM(create_proc0, cred); 148895fab37eSRobert Watson } 148995fab37eSRobert Watson 149095fab37eSRobert Watson /* 149195fab37eSRobert Watson * Initialize MAC label for the first userland process, from which other 149295fab37eSRobert Watson * userland processes and threads are spawned. 149395fab37eSRobert Watson */ 149495fab37eSRobert Watson void 149595fab37eSRobert Watson mac_create_proc1(struct ucred *cred) 149695fab37eSRobert Watson { 149795fab37eSRobert Watson 149895fab37eSRobert Watson MAC_PERFORM(create_proc1, cred); 149995fab37eSRobert Watson } 150095fab37eSRobert Watson 150195fab37eSRobert Watson /* 150295fab37eSRobert Watson * When a new process is created, its label must be initialized. Generally, 150395fab37eSRobert Watson * this involves inheritence from the parent process, modulo possible 150495fab37eSRobert Watson * deltas. This function allows that processing to take place. 150595fab37eSRobert Watson */ 150695fab37eSRobert Watson void 150795fab37eSRobert Watson mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred) 150895fab37eSRobert Watson { 150995fab37eSRobert Watson 151095fab37eSRobert Watson MAC_PERFORM(create_cred, parent_cred, child_cred); 151195fab37eSRobert Watson } 151295fab37eSRobert Watson 151395fab37eSRobert Watson int 151495fab37eSRobert Watson mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int flags) 151595fab37eSRobert Watson { 151695fab37eSRobert Watson int error; 151795fab37eSRobert Watson 151895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access"); 151995fab37eSRobert Watson 152095fab37eSRobert Watson if (!mac_enforce_fs) 152195fab37eSRobert Watson return (0); 152295fab37eSRobert Watson 152395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 152495fab37eSRobert Watson if (error) 152595fab37eSRobert Watson return (error); 152695fab37eSRobert Watson 152795fab37eSRobert Watson MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, flags); 152895fab37eSRobert Watson return (error); 152995fab37eSRobert Watson } 153095fab37eSRobert Watson 153195fab37eSRobert Watson int 153295fab37eSRobert Watson mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp) 153395fab37eSRobert Watson { 153495fab37eSRobert Watson int error; 153595fab37eSRobert Watson 153695fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir"); 153795fab37eSRobert Watson 153895fab37eSRobert Watson if (!mac_enforce_fs) 153995fab37eSRobert Watson return (0); 154095fab37eSRobert Watson 154195fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 154295fab37eSRobert Watson if (error) 154395fab37eSRobert Watson return (error); 154495fab37eSRobert Watson 154595fab37eSRobert Watson MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label); 154695fab37eSRobert Watson return (error); 154795fab37eSRobert Watson } 154895fab37eSRobert Watson 154995fab37eSRobert Watson int 155095fab37eSRobert Watson mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp) 155195fab37eSRobert Watson { 155295fab37eSRobert Watson int error; 155395fab37eSRobert Watson 155495fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot"); 155595fab37eSRobert Watson 155695fab37eSRobert Watson if (!mac_enforce_fs) 155795fab37eSRobert Watson return (0); 155895fab37eSRobert Watson 155995fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 156095fab37eSRobert Watson if (error) 156195fab37eSRobert Watson return (error); 156295fab37eSRobert Watson 156395fab37eSRobert Watson MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label); 156495fab37eSRobert Watson return (error); 156595fab37eSRobert Watson } 156695fab37eSRobert Watson 156795fab37eSRobert Watson int 156895fab37eSRobert Watson mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 156995fab37eSRobert Watson struct componentname *cnp, struct vattr *vap) 157095fab37eSRobert Watson { 157195fab37eSRobert Watson int error; 157295fab37eSRobert Watson 157395fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create"); 157495fab37eSRobert Watson 157595fab37eSRobert Watson if (!mac_enforce_fs) 157695fab37eSRobert Watson return (0); 157795fab37eSRobert Watson 157895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 157995fab37eSRobert Watson if (error) 158095fab37eSRobert Watson return (error); 158195fab37eSRobert Watson 158295fab37eSRobert Watson MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap); 158395fab37eSRobert Watson return (error); 158495fab37eSRobert Watson } 158595fab37eSRobert Watson 158695fab37eSRobert Watson int 158795fab37eSRobert Watson mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp, 158895fab37eSRobert Watson struct componentname *cnp) 158995fab37eSRobert Watson { 159095fab37eSRobert Watson int error; 159195fab37eSRobert Watson 159295fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete"); 159395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete"); 159495fab37eSRobert Watson 159595fab37eSRobert Watson if (!mac_enforce_fs) 159695fab37eSRobert Watson return (0); 159795fab37eSRobert Watson 159895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 159995fab37eSRobert Watson if (error) 160095fab37eSRobert Watson return (error); 160195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 160295fab37eSRobert Watson if (error) 160395fab37eSRobert Watson return (error); 160495fab37eSRobert Watson 160595fab37eSRobert Watson MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp, 160695fab37eSRobert Watson &vp->v_label, cnp); 160795fab37eSRobert Watson return (error); 160895fab37eSRobert Watson } 160995fab37eSRobert Watson 161095fab37eSRobert Watson int 161195fab37eSRobert Watson mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 161295fab37eSRobert Watson acl_type_t type) 161395fab37eSRobert Watson { 161495fab37eSRobert Watson int error; 161595fab37eSRobert Watson 161695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl"); 161795fab37eSRobert Watson 161895fab37eSRobert Watson if (!mac_enforce_fs) 161995fab37eSRobert Watson return (0); 162095fab37eSRobert Watson 162195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 162295fab37eSRobert Watson if (error) 162395fab37eSRobert Watson return (error); 162495fab37eSRobert Watson 162595fab37eSRobert Watson MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type); 162695fab37eSRobert Watson return (error); 162795fab37eSRobert Watson } 162895fab37eSRobert Watson 162995fab37eSRobert Watson int 163095fab37eSRobert Watson mac_check_vnode_exec(struct ucred *cred, struct vnode *vp) 163195fab37eSRobert Watson { 163295fab37eSRobert Watson int error; 163395fab37eSRobert Watson 163495fab37eSRobert Watson if (!mac_enforce_process && !mac_enforce_fs) 163595fab37eSRobert Watson return (0); 163695fab37eSRobert Watson 163795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 163895fab37eSRobert Watson if (error) 163995fab37eSRobert Watson return (error); 164095fab37eSRobert Watson MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label); 164195fab37eSRobert Watson 164295fab37eSRobert Watson return (error); 164395fab37eSRobert Watson } 164495fab37eSRobert Watson 164595fab37eSRobert Watson int 164695fab37eSRobert Watson mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type) 164795fab37eSRobert Watson { 164895fab37eSRobert Watson int error; 164995fab37eSRobert Watson 165095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl"); 165195fab37eSRobert Watson 165295fab37eSRobert Watson if (!mac_enforce_fs) 165395fab37eSRobert Watson return (0); 165495fab37eSRobert Watson 165595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 165695fab37eSRobert Watson if (error) 165795fab37eSRobert Watson return (error); 165895fab37eSRobert Watson 165995fab37eSRobert Watson MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type); 166095fab37eSRobert Watson return (error); 166195fab37eSRobert Watson } 166295fab37eSRobert Watson 166395fab37eSRobert Watson int 166495fab37eSRobert Watson mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 166595fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 166695fab37eSRobert Watson { 166795fab37eSRobert Watson int error; 166895fab37eSRobert Watson 166995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr"); 167095fab37eSRobert Watson 167195fab37eSRobert Watson if (!mac_enforce_fs) 167295fab37eSRobert Watson return (0); 167395fab37eSRobert Watson 167495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 167595fab37eSRobert Watson if (error) 167695fab37eSRobert Watson return (error); 167795fab37eSRobert Watson 167895fab37eSRobert Watson MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label, 167995fab37eSRobert Watson attrnamespace, name, uio); 168095fab37eSRobert Watson return (error); 168195fab37eSRobert Watson } 168295fab37eSRobert Watson 168395fab37eSRobert Watson int 168495fab37eSRobert Watson mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 168595fab37eSRobert Watson struct componentname *cnp) 168695fab37eSRobert Watson { 168795fab37eSRobert Watson int error; 168895fab37eSRobert Watson 168995fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup"); 169095fab37eSRobert Watson 169195fab37eSRobert Watson if (!mac_enforce_fs) 169295fab37eSRobert Watson return (0); 169395fab37eSRobert Watson 169495fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 169595fab37eSRobert Watson if (error) 169695fab37eSRobert Watson return (error); 169795fab37eSRobert Watson 169895fab37eSRobert Watson MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp); 169995fab37eSRobert Watson return (error); 170095fab37eSRobert Watson } 170195fab37eSRobert Watson 170295fab37eSRobert Watson vm_prot_t 170395fab37eSRobert Watson mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp, int newmapping) 170495fab37eSRobert Watson { 170595fab37eSRobert Watson vm_prot_t result = VM_PROT_ALL; 170695fab37eSRobert Watson 170795fab37eSRobert Watson /* 170895fab37eSRobert Watson * This should be some sort of MAC_BITWISE, maybe :) 170995fab37eSRobert Watson */ 171095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_perms"); 171195fab37eSRobert Watson MAC_BOOLEAN(check_vnode_mmap_perms, &, cred, vp, &vp->v_label, 171295fab37eSRobert Watson newmapping); 171395fab37eSRobert Watson return (result); 171495fab37eSRobert Watson } 171595fab37eSRobert Watson 171695fab37eSRobert Watson int 171795fab37eSRobert Watson mac_check_vnode_op(struct ucred *cred, struct vnode *vp, int op) 171895fab37eSRobert Watson { 171995fab37eSRobert Watson int error; 172095fab37eSRobert Watson 172195fab37eSRobert Watson if (!mac_enforce_fs) 172295fab37eSRobert Watson return (0); 172395fab37eSRobert Watson 172495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_op"); 172595fab37eSRobert Watson 172695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 172795fab37eSRobert Watson if (error) 172895fab37eSRobert Watson return (error); 172995fab37eSRobert Watson 173095fab37eSRobert Watson MAC_CHECK(check_vnode_op, cred, vp, &vp->v_label, op); 173195fab37eSRobert Watson 173295fab37eSRobert Watson return (error); 173395fab37eSRobert Watson } 173495fab37eSRobert Watson 173595fab37eSRobert Watson int 173695fab37eSRobert Watson mac_check_vnode_open(struct ucred *cred, struct vnode *vp, mode_t acc_mode) 173795fab37eSRobert Watson { 173895fab37eSRobert Watson int error; 173995fab37eSRobert Watson 174095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open"); 174195fab37eSRobert Watson 174295fab37eSRobert Watson if (!mac_enforce_fs) 174395fab37eSRobert Watson return (0); 174495fab37eSRobert Watson 174595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 174695fab37eSRobert Watson if (error) 174795fab37eSRobert Watson return (error); 174895fab37eSRobert Watson 174995fab37eSRobert Watson MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode); 175095fab37eSRobert Watson return (error); 175195fab37eSRobert Watson } 175295fab37eSRobert Watson 175395fab37eSRobert Watson int 175495fab37eSRobert Watson mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp) 175595fab37eSRobert Watson { 175695fab37eSRobert Watson int error; 175795fab37eSRobert Watson 175895fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir"); 175995fab37eSRobert Watson 176095fab37eSRobert Watson if (!mac_enforce_fs) 176195fab37eSRobert Watson return (0); 176295fab37eSRobert Watson 176395fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 176495fab37eSRobert Watson if (error) 176595fab37eSRobert Watson return (error); 176695fab37eSRobert Watson 176795fab37eSRobert Watson MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label); 176895fab37eSRobert Watson return (error); 176995fab37eSRobert Watson } 177095fab37eSRobert Watson 177195fab37eSRobert Watson int 177295fab37eSRobert Watson mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp) 177395fab37eSRobert Watson { 177495fab37eSRobert Watson int error; 177595fab37eSRobert Watson 177695fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink"); 177795fab37eSRobert Watson 177895fab37eSRobert Watson if (!mac_enforce_fs) 177995fab37eSRobert Watson return (0); 178095fab37eSRobert Watson 178195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 178295fab37eSRobert Watson if (error) 178395fab37eSRobert Watson return (error); 178495fab37eSRobert Watson 178595fab37eSRobert Watson MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label); 178695fab37eSRobert Watson return (error); 178795fab37eSRobert Watson } 178895fab37eSRobert Watson 178995fab37eSRobert Watson static int 179095fab37eSRobert Watson mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 179195fab37eSRobert Watson struct label *newlabel) 179295fab37eSRobert Watson { 179395fab37eSRobert Watson int error; 179495fab37eSRobert Watson 179595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel"); 179695fab37eSRobert Watson 179795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 179895fab37eSRobert Watson if (error) 179995fab37eSRobert Watson return (error); 180095fab37eSRobert Watson 180195fab37eSRobert Watson MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel); 180295fab37eSRobert Watson 180395fab37eSRobert Watson return (error); 180495fab37eSRobert Watson } 180595fab37eSRobert Watson 180695fab37eSRobert Watson int 180795fab37eSRobert Watson mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 180895fab37eSRobert Watson struct vnode *vp, struct componentname *cnp) 180995fab37eSRobert Watson { 181095fab37eSRobert Watson int error; 181195fab37eSRobert Watson 181295fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from"); 181395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from"); 181495fab37eSRobert Watson 181595fab37eSRobert Watson if (!mac_enforce_fs) 181695fab37eSRobert Watson return (0); 181795fab37eSRobert Watson 181895fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 181995fab37eSRobert Watson if (error) 182095fab37eSRobert Watson return (error); 182195fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 182295fab37eSRobert Watson if (error) 182395fab37eSRobert Watson return (error); 182495fab37eSRobert Watson 182595fab37eSRobert Watson MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp, 182695fab37eSRobert Watson &vp->v_label, cnp); 182795fab37eSRobert Watson return (error); 182895fab37eSRobert Watson } 182995fab37eSRobert Watson 183095fab37eSRobert Watson int 183195fab37eSRobert Watson mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 183295fab37eSRobert Watson struct vnode *vp, int samedir, struct componentname *cnp) 183395fab37eSRobert Watson { 183495fab37eSRobert Watson int error; 183595fab37eSRobert Watson 183695fab37eSRobert Watson ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to"); 183795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to"); 183895fab37eSRobert Watson 183995fab37eSRobert Watson if (!mac_enforce_fs) 184095fab37eSRobert Watson return (0); 184195fab37eSRobert Watson 184295fab37eSRobert Watson error = vn_refreshlabel(dvp, cred); 184395fab37eSRobert Watson if (error) 184495fab37eSRobert Watson return (error); 184595fab37eSRobert Watson if (vp != NULL) { 184695fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 184795fab37eSRobert Watson if (error) 184895fab37eSRobert Watson return (error); 184995fab37eSRobert Watson } 185095fab37eSRobert Watson MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp, 185195fab37eSRobert Watson vp != NULL ? &vp->v_label : NULL, samedir, cnp); 185295fab37eSRobert Watson return (error); 185395fab37eSRobert Watson } 185495fab37eSRobert Watson 185595fab37eSRobert Watson int 185695fab37eSRobert Watson mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp) 185795fab37eSRobert Watson { 185895fab37eSRobert Watson int error; 185995fab37eSRobert Watson 186095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke"); 186195fab37eSRobert Watson 186295fab37eSRobert Watson if (!mac_enforce_fs) 186395fab37eSRobert Watson return (0); 186495fab37eSRobert Watson 186595fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 186695fab37eSRobert Watson if (error) 186795fab37eSRobert Watson return (error); 186895fab37eSRobert Watson 186995fab37eSRobert Watson MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label); 187095fab37eSRobert Watson return (error); 187195fab37eSRobert Watson } 187295fab37eSRobert Watson 187395fab37eSRobert Watson int 187495fab37eSRobert Watson mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type, 187595fab37eSRobert Watson struct acl *acl) 187695fab37eSRobert Watson { 187795fab37eSRobert Watson int error; 187895fab37eSRobert Watson 187995fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl"); 188095fab37eSRobert Watson 188195fab37eSRobert Watson if (!mac_enforce_fs) 188295fab37eSRobert Watson return (0); 188395fab37eSRobert Watson 188495fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 188595fab37eSRobert Watson if (error) 188695fab37eSRobert Watson return (error); 188795fab37eSRobert Watson 188895fab37eSRobert Watson MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl); 188995fab37eSRobert Watson return (error); 189095fab37eSRobert Watson } 189195fab37eSRobert Watson 189295fab37eSRobert Watson int 189395fab37eSRobert Watson mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 189495fab37eSRobert Watson int attrnamespace, const char *name, struct uio *uio) 189595fab37eSRobert Watson { 189695fab37eSRobert Watson int error; 189795fab37eSRobert Watson 189895fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr"); 189995fab37eSRobert Watson 190095fab37eSRobert Watson if (!mac_enforce_fs) 190195fab37eSRobert Watson return (0); 190295fab37eSRobert Watson 190395fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 190495fab37eSRobert Watson if (error) 190595fab37eSRobert Watson return (error); 190695fab37eSRobert Watson 190795fab37eSRobert Watson MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label, 190895fab37eSRobert Watson attrnamespace, name, uio); 190995fab37eSRobert Watson return (error); 191095fab37eSRobert Watson } 191195fab37eSRobert Watson 191295fab37eSRobert Watson int 191395fab37eSRobert Watson mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags) 191495fab37eSRobert Watson { 191595fab37eSRobert Watson int error; 191695fab37eSRobert Watson 191795fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags"); 191895fab37eSRobert Watson 191995fab37eSRobert Watson if (!mac_enforce_fs) 192095fab37eSRobert Watson return (0); 192195fab37eSRobert Watson 192295fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 192395fab37eSRobert Watson if (error) 192495fab37eSRobert Watson return (error); 192595fab37eSRobert Watson 192695fab37eSRobert Watson MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags); 192795fab37eSRobert Watson return (error); 192895fab37eSRobert Watson } 192995fab37eSRobert Watson 193095fab37eSRobert Watson int 193195fab37eSRobert Watson mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode) 193295fab37eSRobert Watson { 193395fab37eSRobert Watson int error; 193495fab37eSRobert Watson 193595fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode"); 193695fab37eSRobert Watson 193795fab37eSRobert Watson if (!mac_enforce_fs) 193895fab37eSRobert Watson return (0); 193995fab37eSRobert Watson 194095fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 194195fab37eSRobert Watson if (error) 194295fab37eSRobert Watson return (error); 194395fab37eSRobert Watson 194495fab37eSRobert Watson MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode); 194595fab37eSRobert Watson return (error); 194695fab37eSRobert Watson } 194795fab37eSRobert Watson 194895fab37eSRobert Watson int 194995fab37eSRobert Watson mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid, 195095fab37eSRobert Watson gid_t gid) 195195fab37eSRobert Watson { 195295fab37eSRobert Watson int error; 195395fab37eSRobert Watson 195495fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner"); 195595fab37eSRobert Watson 195695fab37eSRobert Watson if (!mac_enforce_fs) 195795fab37eSRobert Watson return (0); 195895fab37eSRobert Watson 195995fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 196095fab37eSRobert Watson if (error) 196195fab37eSRobert Watson return (error); 196295fab37eSRobert Watson 196395fab37eSRobert Watson MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid); 196495fab37eSRobert Watson return (error); 196595fab37eSRobert Watson } 196695fab37eSRobert Watson 196795fab37eSRobert Watson int 196895fab37eSRobert Watson mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 196995fab37eSRobert Watson struct timespec atime, struct timespec mtime) 197095fab37eSRobert Watson { 197195fab37eSRobert Watson int error; 197295fab37eSRobert Watson 197395fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes"); 197495fab37eSRobert Watson 197595fab37eSRobert Watson if (!mac_enforce_fs) 197695fab37eSRobert Watson return (0); 197795fab37eSRobert Watson 197895fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 197995fab37eSRobert Watson if (error) 198095fab37eSRobert Watson return (error); 198195fab37eSRobert Watson 198295fab37eSRobert Watson MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime, 198395fab37eSRobert Watson mtime); 198495fab37eSRobert Watson return (error); 198595fab37eSRobert Watson } 198695fab37eSRobert Watson 198795fab37eSRobert Watson int 198895fab37eSRobert Watson mac_check_vnode_stat(struct ucred *cred, struct vnode *vp) 198995fab37eSRobert Watson { 199095fab37eSRobert Watson int error; 199195fab37eSRobert Watson 199295fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat"); 199395fab37eSRobert Watson 199495fab37eSRobert Watson if (!mac_enforce_fs) 199595fab37eSRobert Watson return (0); 199695fab37eSRobert Watson 199795fab37eSRobert Watson error = vn_refreshlabel(vp, cred); 199895fab37eSRobert Watson if (error) 199995fab37eSRobert Watson return (error); 200095fab37eSRobert Watson 200195fab37eSRobert Watson MAC_CHECK(check_vnode_stat, cred, vp, &vp->v_label); 200295fab37eSRobert Watson return (error); 200395fab37eSRobert Watson } 200495fab37eSRobert Watson 200595fab37eSRobert Watson /* 200695fab37eSRobert Watson * When relabeling a process, call out to the policies for the maximum 200795fab37eSRobert Watson * permission allowed for each object type we know about in its 200895fab37eSRobert Watson * memory space, and revoke access (in the least surprising ways we 200995fab37eSRobert Watson * know) when necessary. The process lock is not held here. 201095fab37eSRobert Watson */ 201195fab37eSRobert Watson static void 201295fab37eSRobert Watson mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred) 201395fab37eSRobert Watson { 201495fab37eSRobert Watson 201595fab37eSRobert Watson /* XXX freeze all other threads */ 201695fab37eSRobert Watson mtx_lock(&Giant); 201795fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 201895fab37eSRobert Watson &td->td_proc->p_vmspace->vm_map); 201995fab37eSRobert Watson mtx_unlock(&Giant); 202095fab37eSRobert Watson /* XXX allow other threads to continue */ 202195fab37eSRobert Watson } 202295fab37eSRobert Watson 202395fab37eSRobert Watson static __inline const char * 202495fab37eSRobert Watson prot2str(vm_prot_t prot) 202595fab37eSRobert Watson { 202695fab37eSRobert Watson 202795fab37eSRobert Watson switch (prot & VM_PROT_ALL) { 202895fab37eSRobert Watson case VM_PROT_READ: 202995fab37eSRobert Watson return ("r--"); 203095fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE: 203195fab37eSRobert Watson return ("rw-"); 203295fab37eSRobert Watson case VM_PROT_READ | VM_PROT_EXECUTE: 203395fab37eSRobert Watson return ("r-x"); 203495fab37eSRobert Watson case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE: 203595fab37eSRobert Watson return ("rwx"); 203695fab37eSRobert Watson case VM_PROT_WRITE: 203795fab37eSRobert Watson return ("-w-"); 203895fab37eSRobert Watson case VM_PROT_EXECUTE: 203995fab37eSRobert Watson return ("--x"); 204095fab37eSRobert Watson case VM_PROT_WRITE | VM_PROT_EXECUTE: 204195fab37eSRobert Watson return ("-wx"); 204295fab37eSRobert Watson default: 204395fab37eSRobert Watson return ("---"); 204495fab37eSRobert Watson } 204595fab37eSRobert Watson } 204695fab37eSRobert Watson 204795fab37eSRobert Watson static void 204895fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred, 204995fab37eSRobert Watson struct vm_map *map) 205095fab37eSRobert Watson { 205195fab37eSRobert Watson struct vm_map_entry *vme; 205295fab37eSRobert Watson vm_prot_t result, revokeperms; 205395fab37eSRobert Watson vm_object_t object; 205495fab37eSRobert Watson vm_ooffset_t offset; 205595fab37eSRobert Watson struct vnode *vp; 205695fab37eSRobert Watson 205795fab37eSRobert Watson vm_map_lock_read(map); 205895fab37eSRobert Watson for (vme = map->header.next; vme != &map->header; vme = vme->next) { 205995fab37eSRobert Watson if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { 206095fab37eSRobert Watson mac_cred_mmapped_drop_perms_recurse(td, cred, 206195fab37eSRobert Watson vme->object.sub_map); 206295fab37eSRobert Watson continue; 206395fab37eSRobert Watson } 206495fab37eSRobert Watson /* 206595fab37eSRobert Watson * Skip over entries that obviously are not shared. 206695fab37eSRobert Watson */ 206795fab37eSRobert Watson if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) || 206895fab37eSRobert Watson !vme->max_protection) 206995fab37eSRobert Watson continue; 207095fab37eSRobert Watson /* 207195fab37eSRobert Watson * Drill down to the deepest backing object. 207295fab37eSRobert Watson */ 207395fab37eSRobert Watson offset = vme->offset; 207495fab37eSRobert Watson object = vme->object.vm_object; 207595fab37eSRobert Watson if (object == NULL) 207695fab37eSRobert Watson continue; 207795fab37eSRobert Watson while (object->backing_object != NULL) { 207895fab37eSRobert Watson object = object->backing_object; 207995fab37eSRobert Watson offset += object->backing_object_offset; 208095fab37eSRobert Watson } 208195fab37eSRobert Watson /* 208295fab37eSRobert Watson * At the moment, vm_maps and objects aren't considered 208395fab37eSRobert Watson * by the MAC system, so only things with backing by a 208495fab37eSRobert Watson * normal object (read: vnodes) are checked. 208595fab37eSRobert Watson */ 208695fab37eSRobert Watson if (object->type != OBJT_VNODE) 208795fab37eSRobert Watson continue; 208895fab37eSRobert Watson vp = (struct vnode *)object->handle; 208995fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 209095fab37eSRobert Watson result = mac_check_vnode_mmap_prot(cred, vp, 0); 209195fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 209295fab37eSRobert Watson /* 209395fab37eSRobert Watson * Find out what maximum protection we may be allowing 209495fab37eSRobert Watson * now but a policy needs to get removed. 209595fab37eSRobert Watson */ 209695fab37eSRobert Watson revokeperms = vme->max_protection & ~result; 209795fab37eSRobert Watson if (!revokeperms) 209895fab37eSRobert Watson continue; 209995fab37eSRobert Watson printf("pid %d: revoking %s perms from %#lx:%d " 210095fab37eSRobert Watson "(max %s/cur %s)\n", td->td_proc->p_pid, 210195fab37eSRobert Watson prot2str(revokeperms), vme->start, vme->end - vme->start, 210295fab37eSRobert Watson prot2str(vme->max_protection), prot2str(vme->protection)); 210395fab37eSRobert Watson vm_map_lock_upgrade(map); 210495fab37eSRobert Watson /* 210595fab37eSRobert Watson * This is the really simple case: if a map has more 210695fab37eSRobert Watson * max_protection than is allowed, but it's not being 210795fab37eSRobert Watson * actually used (that is, the current protection is 210895fab37eSRobert Watson * still allowed), we can just wipe it out and do 210995fab37eSRobert Watson * nothing more. 211095fab37eSRobert Watson */ 211195fab37eSRobert Watson if ((vme->protection & revokeperms) == 0) { 211295fab37eSRobert Watson vme->max_protection -= revokeperms; 211395fab37eSRobert Watson } else { 211495fab37eSRobert Watson if (revokeperms & VM_PROT_WRITE) { 211595fab37eSRobert Watson /* 211695fab37eSRobert Watson * In the more complicated case, flush out all 211795fab37eSRobert Watson * pending changes to the object then turn it 211895fab37eSRobert Watson * copy-on-write. 211995fab37eSRobert Watson */ 212095fab37eSRobert Watson vm_object_reference(object); 212195fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 212295fab37eSRobert Watson vm_object_page_clean(object, 212395fab37eSRobert Watson OFF_TO_IDX(offset), 212495fab37eSRobert Watson OFF_TO_IDX(offset + vme->end - vme->start + 212595fab37eSRobert Watson PAGE_MASK), 212695fab37eSRobert Watson OBJPC_SYNC); 212795fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 212895fab37eSRobert Watson vm_object_deallocate(object); 212995fab37eSRobert Watson /* 213095fab37eSRobert Watson * Why bother if there's no read permissions 213195fab37eSRobert Watson * anymore? For the rest, we need to leave 213295fab37eSRobert Watson * the write permissions on for COW, or 213395fab37eSRobert Watson * remove them entirely if configured to. 213495fab37eSRobert Watson */ 213595fab37eSRobert Watson if (!mac_mmap_revocation_via_cow) { 213695fab37eSRobert Watson vme->max_protection &= ~VM_PROT_WRITE; 213795fab37eSRobert Watson vme->protection &= ~VM_PROT_WRITE; 213895fab37eSRobert Watson } if ((revokeperms & VM_PROT_READ) == 0) 213995fab37eSRobert Watson vme->eflags |= MAP_ENTRY_COW | 214095fab37eSRobert Watson MAP_ENTRY_NEEDS_COPY; 214195fab37eSRobert Watson } 214295fab37eSRobert Watson if (revokeperms & VM_PROT_EXECUTE) { 214395fab37eSRobert Watson vme->max_protection &= ~VM_PROT_EXECUTE; 214495fab37eSRobert Watson vme->protection &= ~VM_PROT_EXECUTE; 214595fab37eSRobert Watson } 214695fab37eSRobert Watson if (revokeperms & VM_PROT_READ) { 214795fab37eSRobert Watson vme->max_protection = 0; 214895fab37eSRobert Watson vme->protection = 0; 214995fab37eSRobert Watson } 215095fab37eSRobert Watson pmap_protect(map->pmap, vme->start, vme->end, 215195fab37eSRobert Watson vme->protection & ~revokeperms); 215295fab37eSRobert Watson vm_map_simplify_entry(map, vme); 215395fab37eSRobert Watson } 215495fab37eSRobert Watson vm_map_lock_downgrade(map); 215595fab37eSRobert Watson } 215695fab37eSRobert Watson vm_map_unlock_read(map); 215795fab37eSRobert Watson } 215895fab37eSRobert Watson 215995fab37eSRobert Watson /* 216095fab37eSRobert Watson * When the subject's label changes, it may require revocation of privilege 216195fab37eSRobert Watson * to mapped objects. This can't be done on-the-fly later with a unified 216295fab37eSRobert Watson * buffer cache. 216395fab37eSRobert Watson */ 216495fab37eSRobert Watson static void 216595fab37eSRobert Watson mac_relabel_cred(struct ucred *cred, struct label *newlabel) 216695fab37eSRobert Watson { 216795fab37eSRobert Watson 216895fab37eSRobert Watson MAC_PERFORM(relabel_cred, cred, newlabel); 216995fab37eSRobert Watson mac_cred_mmapped_drop_perms(curthread, cred); 217095fab37eSRobert Watson } 217195fab37eSRobert Watson 217295fab37eSRobert Watson void 217395fab37eSRobert Watson mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel) 217495fab37eSRobert Watson { 217595fab37eSRobert Watson 217695fab37eSRobert Watson MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel); 217795fab37eSRobert Watson } 217895fab37eSRobert Watson 217995fab37eSRobert Watson void 218095fab37eSRobert Watson mac_create_ifnet(struct ifnet *ifnet) 218195fab37eSRobert Watson { 218295fab37eSRobert Watson 218395fab37eSRobert Watson MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label); 218495fab37eSRobert Watson } 218595fab37eSRobert Watson 218695fab37eSRobert Watson void 218795fab37eSRobert Watson mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d) 218895fab37eSRobert Watson { 218995fab37eSRobert Watson 219095fab37eSRobert Watson MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label); 219195fab37eSRobert Watson } 219295fab37eSRobert Watson 219395fab37eSRobert Watson void 219495fab37eSRobert Watson mac_create_socket(struct ucred *cred, struct socket *socket) 219595fab37eSRobert Watson { 219695fab37eSRobert Watson 219795fab37eSRobert Watson MAC_PERFORM(create_socket, cred, socket, &socket->so_label); 219895fab37eSRobert Watson } 219995fab37eSRobert Watson 220095fab37eSRobert Watson void 220195fab37eSRobert Watson mac_create_pipe(struct ucred *cred, struct pipe *pipe) 220295fab37eSRobert Watson { 220395fab37eSRobert Watson 220495fab37eSRobert Watson MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label); 220595fab37eSRobert Watson } 220695fab37eSRobert Watson 220795fab37eSRobert Watson void 220895fab37eSRobert Watson mac_create_socket_from_socket(struct socket *oldsocket, 220995fab37eSRobert Watson struct socket *newsocket) 221095fab37eSRobert Watson { 221195fab37eSRobert Watson 221295fab37eSRobert Watson MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label, 221395fab37eSRobert Watson newsocket, &newsocket->so_label); 221495fab37eSRobert Watson } 221595fab37eSRobert Watson 221695fab37eSRobert Watson static void 221795fab37eSRobert Watson mac_relabel_socket(struct ucred *cred, struct socket *socket, 221895fab37eSRobert Watson struct label *newlabel) 221995fab37eSRobert Watson { 222095fab37eSRobert Watson 222195fab37eSRobert Watson MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel); 222295fab37eSRobert Watson } 222395fab37eSRobert Watson 222495fab37eSRobert Watson static void 222595fab37eSRobert Watson mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel) 222695fab37eSRobert Watson { 222795fab37eSRobert Watson 222895fab37eSRobert Watson MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel); 222995fab37eSRobert Watson } 223095fab37eSRobert Watson 223195fab37eSRobert Watson void 223295fab37eSRobert Watson mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket) 223395fab37eSRobert Watson { 223495fab37eSRobert Watson 223595fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, &mbuf->m_pkthdr.label, 223695fab37eSRobert Watson socket, &socket->so_peerlabel); 223795fab37eSRobert Watson } 223895fab37eSRobert Watson 223995fab37eSRobert Watson void 224095fab37eSRobert Watson mac_set_socket_peer_from_socket(struct socket *oldsocket, 224195fab37eSRobert Watson struct socket *newsocket) 224295fab37eSRobert Watson { 224395fab37eSRobert Watson 224495fab37eSRobert Watson MAC_PERFORM(set_socket_peer_from_socket, oldsocket, 224595fab37eSRobert Watson &oldsocket->so_label, newsocket, &newsocket->so_peerlabel); 224695fab37eSRobert Watson } 224795fab37eSRobert Watson 224895fab37eSRobert Watson void 224995fab37eSRobert Watson mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram) 225095fab37eSRobert Watson { 225195fab37eSRobert Watson 225295fab37eSRobert Watson MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label, 225395fab37eSRobert Watson datagram, &datagram->m_pkthdr.label); 225495fab37eSRobert Watson } 225595fab37eSRobert Watson 225695fab37eSRobert Watson void 225795fab37eSRobert Watson mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment) 225895fab37eSRobert Watson { 225995fab37eSRobert Watson 226095fab37eSRobert Watson MAC_PERFORM(create_fragment, datagram, &datagram->m_pkthdr.label, 226195fab37eSRobert Watson fragment, &fragment->m_pkthdr.label); 226295fab37eSRobert Watson } 226395fab37eSRobert Watson 226495fab37eSRobert Watson void 226595fab37eSRobert Watson mac_create_ipq(struct mbuf *fragment, struct ipq *ipq) 226695fab37eSRobert Watson { 226795fab37eSRobert Watson 226895fab37eSRobert Watson MAC_PERFORM(create_ipq, fragment, &fragment->m_pkthdr.label, ipq, 226995fab37eSRobert Watson &ipq->ipq_label); 227095fab37eSRobert Watson } 227195fab37eSRobert Watson 227295fab37eSRobert Watson void 227395fab37eSRobert Watson mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf) 227495fab37eSRobert Watson { 227595fab37eSRobert Watson 227695fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, &oldmbuf->m_pkthdr.label, 227795fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 227895fab37eSRobert Watson } 227995fab37eSRobert Watson 228095fab37eSRobert Watson void 228195fab37eSRobert Watson mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf) 228295fab37eSRobert Watson { 228395fab37eSRobert Watson 228495fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf, 228595fab37eSRobert Watson &mbuf->m_pkthdr.label); 228695fab37eSRobert Watson } 228795fab37eSRobert Watson 228895fab37eSRobert Watson void 228995fab37eSRobert Watson mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf) 229095fab37eSRobert Watson { 229195fab37eSRobert Watson 229295fab37eSRobert Watson MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf, 229395fab37eSRobert Watson &mbuf->m_pkthdr.label); 229495fab37eSRobert Watson } 229595fab37eSRobert Watson 229695fab37eSRobert Watson void 229795fab37eSRobert Watson mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf) 229895fab37eSRobert Watson { 229995fab37eSRobert Watson 230095fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf, 230195fab37eSRobert Watson &mbuf->m_pkthdr.label); 230295fab37eSRobert Watson } 230395fab37eSRobert Watson 230495fab37eSRobert Watson void 230595fab37eSRobert Watson mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet, 230695fab37eSRobert Watson struct mbuf *newmbuf) 230795fab37eSRobert Watson { 230895fab37eSRobert Watson 230995fab37eSRobert Watson MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, 231095fab37eSRobert Watson &oldmbuf->m_pkthdr.label, ifnet, &ifnet->if_label, newmbuf, 231195fab37eSRobert Watson &newmbuf->m_pkthdr.label); 231295fab37eSRobert Watson } 231395fab37eSRobert Watson 231495fab37eSRobert Watson void 231595fab37eSRobert Watson mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf) 231695fab37eSRobert Watson { 231795fab37eSRobert Watson 231895fab37eSRobert Watson MAC_PERFORM(create_mbuf_netlayer, oldmbuf, &oldmbuf->m_pkthdr.label, 231995fab37eSRobert Watson newmbuf, &newmbuf->m_pkthdr.label); 232095fab37eSRobert Watson } 232195fab37eSRobert Watson 232295fab37eSRobert Watson int 232395fab37eSRobert Watson mac_fragment_match(struct mbuf *fragment, struct ipq *ipq) 232495fab37eSRobert Watson { 232595fab37eSRobert Watson int result; 232695fab37eSRobert Watson 232795fab37eSRobert Watson result = 1; 232895fab37eSRobert Watson MAC_BOOLEAN(fragment_match, &&, fragment, &fragment->m_pkthdr.label, 232995fab37eSRobert Watson ipq, &ipq->ipq_label); 233095fab37eSRobert Watson 233195fab37eSRobert Watson return (result); 233295fab37eSRobert Watson } 233395fab37eSRobert Watson 233495fab37eSRobert Watson void 233595fab37eSRobert Watson mac_update_ipq(struct mbuf *fragment, struct ipq *ipq) 233695fab37eSRobert Watson { 233795fab37eSRobert Watson 233895fab37eSRobert Watson MAC_PERFORM(update_ipq, fragment, &fragment->m_pkthdr.label, ipq, 233995fab37eSRobert Watson &ipq->ipq_label); 234095fab37eSRobert Watson } 234195fab37eSRobert Watson 234295fab37eSRobert Watson void 234395fab37eSRobert Watson mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf) 234495fab37eSRobert Watson { 234595fab37eSRobert Watson 234695fab37eSRobert Watson MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf, 234795fab37eSRobert Watson &mbuf->m_pkthdr.label); 234895fab37eSRobert Watson } 234995fab37eSRobert Watson 235095fab37eSRobert Watson void 235195fab37eSRobert Watson mac_create_mount(struct ucred *cred, struct mount *mp) 235295fab37eSRobert Watson { 235395fab37eSRobert Watson 235495fab37eSRobert Watson MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel, 235595fab37eSRobert Watson &mp->mnt_fslabel); 235695fab37eSRobert Watson } 235795fab37eSRobert Watson 235895fab37eSRobert Watson void 235995fab37eSRobert Watson mac_create_root_mount(struct ucred *cred, struct mount *mp) 236095fab37eSRobert Watson { 236195fab37eSRobert Watson 236295fab37eSRobert Watson MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel, 236395fab37eSRobert Watson &mp->mnt_fslabel); 236495fab37eSRobert Watson } 236595fab37eSRobert Watson 236695fab37eSRobert Watson int 236795fab37eSRobert Watson mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet) 236895fab37eSRobert Watson { 236995fab37eSRobert Watson int error; 237095fab37eSRobert Watson 237195fab37eSRobert Watson if (!mac_enforce_network) 237295fab37eSRobert Watson return (0); 237395fab37eSRobert Watson 237495fab37eSRobert Watson MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet, 237595fab37eSRobert Watson &ifnet->if_label); 237695fab37eSRobert Watson 237795fab37eSRobert Watson return (error); 237895fab37eSRobert Watson } 237995fab37eSRobert Watson 238095fab37eSRobert Watson static int 238195fab37eSRobert Watson mac_check_cred_relabel(struct ucred *cred, struct label *newlabel) 238295fab37eSRobert Watson { 238395fab37eSRobert Watson int error; 238495fab37eSRobert Watson 238595fab37eSRobert Watson MAC_CHECK(check_cred_relabel, cred, newlabel); 238695fab37eSRobert Watson 238795fab37eSRobert Watson return (error); 238895fab37eSRobert Watson } 238995fab37eSRobert Watson 239095fab37eSRobert Watson int 239195fab37eSRobert Watson mac_check_cred_visible(struct ucred *u1, struct ucred *u2) 239295fab37eSRobert Watson { 239395fab37eSRobert Watson int error; 239495fab37eSRobert Watson 239595fab37eSRobert Watson if (!mac_enforce_process) 239695fab37eSRobert Watson return (0); 239795fab37eSRobert Watson 239895fab37eSRobert Watson MAC_CHECK(check_cred_visible, u1, u2); 239995fab37eSRobert Watson 240095fab37eSRobert Watson return (error); 240195fab37eSRobert Watson } 240295fab37eSRobert Watson 240395fab37eSRobert Watson int 240495fab37eSRobert Watson mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf) 240595fab37eSRobert Watson { 240695fab37eSRobert Watson int error; 240795fab37eSRobert Watson 240895fab37eSRobert Watson if (!mac_enforce_network) 240995fab37eSRobert Watson return (0); 241095fab37eSRobert Watson 241195fab37eSRobert Watson KASSERT(mbuf->m_flags & M_PKTHDR, ("packet has no pkthdr")); 241295fab37eSRobert Watson if (!(mbuf->m_pkthdr.label.l_flags & MAC_FLAG_INITIALIZED)) 241395fab37eSRobert Watson printf("%s%d: not initialized\n", ifnet->if_name, 241495fab37eSRobert Watson ifnet->if_unit); 241595fab37eSRobert Watson 241695fab37eSRobert Watson MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf, 241795fab37eSRobert Watson &mbuf->m_pkthdr.label); 241895fab37eSRobert Watson 241995fab37eSRobert Watson return (error); 242095fab37eSRobert Watson } 242195fab37eSRobert Watson 242295fab37eSRobert Watson int 242395fab37eSRobert Watson mac_check_mount_stat(struct ucred *cred, struct mount *mount) 242495fab37eSRobert Watson { 242595fab37eSRobert Watson int error; 242695fab37eSRobert Watson 242795fab37eSRobert Watson if (!mac_enforce_fs) 242895fab37eSRobert Watson return (0); 242995fab37eSRobert Watson 243095fab37eSRobert Watson MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel); 243195fab37eSRobert Watson 243295fab37eSRobert Watson return (error); 243395fab37eSRobert Watson } 243495fab37eSRobert Watson 243595fab37eSRobert Watson int 243695fab37eSRobert Watson mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd, 243795fab37eSRobert Watson void *data) 243895fab37eSRobert Watson { 243995fab37eSRobert Watson int error; 244095fab37eSRobert Watson 244195fab37eSRobert Watson MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data); 244295fab37eSRobert Watson 244395fab37eSRobert Watson return (error); 244495fab37eSRobert Watson } 244595fab37eSRobert Watson 244695fab37eSRobert Watson int 244795fab37eSRobert Watson mac_check_pipe_op(struct ucred *cred, struct pipe *pipe, int op) 244895fab37eSRobert Watson { 244995fab37eSRobert Watson int error; 245095fab37eSRobert Watson 245195fab37eSRobert Watson MAC_CHECK(check_pipe_op, cred, pipe, pipe->pipe_label, op); 245295fab37eSRobert Watson 245395fab37eSRobert Watson return (error); 245495fab37eSRobert Watson } 245595fab37eSRobert Watson 245695fab37eSRobert Watson static int 245795fab37eSRobert Watson mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 245895fab37eSRobert Watson struct label *newlabel) 245995fab37eSRobert Watson { 246095fab37eSRobert Watson int error; 246195fab37eSRobert Watson 246295fab37eSRobert Watson MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel); 246395fab37eSRobert Watson 246495fab37eSRobert Watson return (error); 246595fab37eSRobert Watson } 246695fab37eSRobert Watson 246795fab37eSRobert Watson int 246895fab37eSRobert Watson mac_check_proc_debug(struct ucred *cred, struct proc *proc) 246995fab37eSRobert Watson { 247095fab37eSRobert Watson int error; 247195fab37eSRobert Watson 247295fab37eSRobert Watson if (!mac_enforce_process) 247395fab37eSRobert Watson return (0); 247495fab37eSRobert Watson 247595fab37eSRobert Watson MAC_CHECK(check_proc_debug, cred, proc); 247695fab37eSRobert Watson 247795fab37eSRobert Watson return (error); 247895fab37eSRobert Watson } 247995fab37eSRobert Watson 248095fab37eSRobert Watson int 248195fab37eSRobert Watson mac_check_proc_sched(struct ucred *cred, struct proc *proc) 248295fab37eSRobert Watson { 248395fab37eSRobert Watson int error; 248495fab37eSRobert Watson 248595fab37eSRobert Watson if (!mac_enforce_process) 248695fab37eSRobert Watson return (0); 248795fab37eSRobert Watson 248895fab37eSRobert Watson MAC_CHECK(check_proc_sched, cred, proc); 248995fab37eSRobert Watson 249095fab37eSRobert Watson return (error); 249195fab37eSRobert Watson } 249295fab37eSRobert Watson 249395fab37eSRobert Watson int 249495fab37eSRobert Watson mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 249595fab37eSRobert Watson { 249695fab37eSRobert Watson int error; 249795fab37eSRobert Watson 249895fab37eSRobert Watson if (!mac_enforce_process) 249995fab37eSRobert Watson return (0); 250095fab37eSRobert Watson 250195fab37eSRobert Watson MAC_CHECK(check_proc_signal, cred, proc, signum); 250295fab37eSRobert Watson 250395fab37eSRobert Watson return (error); 250495fab37eSRobert Watson } 250595fab37eSRobert Watson 250695fab37eSRobert Watson int 250795fab37eSRobert Watson mac_check_socket_bind(struct ucred *ucred, struct socket *socket, 250895fab37eSRobert Watson struct sockaddr *sockaddr) 250995fab37eSRobert Watson { 251095fab37eSRobert Watson int error; 251195fab37eSRobert Watson 251295fab37eSRobert Watson if (!mac_enforce_socket) 251395fab37eSRobert Watson return (0); 251495fab37eSRobert Watson 251595fab37eSRobert Watson MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label, 251695fab37eSRobert Watson sockaddr); 251795fab37eSRobert Watson 251895fab37eSRobert Watson return (error); 251995fab37eSRobert Watson } 252095fab37eSRobert Watson 252195fab37eSRobert Watson int 252295fab37eSRobert Watson mac_check_socket_connect(struct ucred *cred, struct socket *socket, 252395fab37eSRobert Watson struct sockaddr *sockaddr) 252495fab37eSRobert Watson { 252595fab37eSRobert Watson int error; 252695fab37eSRobert Watson 252795fab37eSRobert Watson if (!mac_enforce_socket) 252895fab37eSRobert Watson return (0); 252995fab37eSRobert Watson 253095fab37eSRobert Watson MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label, 253195fab37eSRobert Watson sockaddr); 253295fab37eSRobert Watson 253395fab37eSRobert Watson return (error); 253495fab37eSRobert Watson } 253595fab37eSRobert Watson 253695fab37eSRobert Watson int 253795fab37eSRobert Watson mac_check_socket_listen(struct ucred *cred, struct socket *socket) 253895fab37eSRobert Watson { 253995fab37eSRobert Watson int error; 254095fab37eSRobert Watson 254195fab37eSRobert Watson if (!mac_enforce_socket) 254295fab37eSRobert Watson return (0); 254395fab37eSRobert Watson 254495fab37eSRobert Watson MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label); 254595fab37eSRobert Watson return (error); 254695fab37eSRobert Watson } 254795fab37eSRobert Watson 254895fab37eSRobert Watson int 254995fab37eSRobert Watson mac_check_socket_receive(struct socket *socket, struct mbuf *mbuf) 255095fab37eSRobert Watson { 255195fab37eSRobert Watson int error; 255295fab37eSRobert Watson 255395fab37eSRobert Watson if (!mac_enforce_socket) 255495fab37eSRobert Watson return (0); 255595fab37eSRobert Watson 255695fab37eSRobert Watson MAC_CHECK(check_socket_receive, socket, &socket->so_label, mbuf, 255795fab37eSRobert Watson &mbuf->m_pkthdr.label); 255895fab37eSRobert Watson 255995fab37eSRobert Watson return (error); 256095fab37eSRobert Watson } 256195fab37eSRobert Watson 256295fab37eSRobert Watson static int 256395fab37eSRobert Watson mac_check_socket_relabel(struct ucred *cred, struct socket *socket, 256495fab37eSRobert Watson struct label *newlabel) 256595fab37eSRobert Watson { 256695fab37eSRobert Watson int error; 256795fab37eSRobert Watson 256895fab37eSRobert Watson MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label, 256995fab37eSRobert Watson newlabel); 257095fab37eSRobert Watson 257195fab37eSRobert Watson return (error); 257295fab37eSRobert Watson } 257395fab37eSRobert Watson 257495fab37eSRobert Watson int 257595fab37eSRobert Watson mac_check_socket_visible(struct ucred *cred, struct socket *socket) 257695fab37eSRobert Watson { 257795fab37eSRobert Watson int error; 257895fab37eSRobert Watson 257995fab37eSRobert Watson if (!mac_enforce_socket) 258095fab37eSRobert Watson return (0); 258195fab37eSRobert Watson 258295fab37eSRobert Watson MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label); 258395fab37eSRobert Watson 258495fab37eSRobert Watson return (error); 258595fab37eSRobert Watson } 258695fab37eSRobert Watson 258795fab37eSRobert Watson int 258895fab37eSRobert Watson mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 258995fab37eSRobert Watson struct ifnet *ifnet) 259095fab37eSRobert Watson { 259195fab37eSRobert Watson struct mac label; 259295fab37eSRobert Watson int error; 259395fab37eSRobert Watson 259495fab37eSRobert Watson error = mac_externalize(&ifnet->if_label, &label); 259595fab37eSRobert Watson if (error) 259695fab37eSRobert Watson return (error); 259795fab37eSRobert Watson 259895fab37eSRobert Watson return (copyout(&label, ifr->ifr_ifru.ifru_data, sizeof(label))); 259995fab37eSRobert Watson } 260095fab37eSRobert Watson 260195fab37eSRobert Watson int 260295fab37eSRobert Watson mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 260395fab37eSRobert Watson struct ifnet *ifnet) 260495fab37eSRobert Watson { 260595fab37eSRobert Watson struct mac newlabel; 260695fab37eSRobert Watson struct label intlabel; 260795fab37eSRobert Watson int error; 260895fab37eSRobert Watson 260995fab37eSRobert Watson error = copyin(ifr->ifr_ifru.ifru_data, &newlabel, sizeof(newlabel)); 261095fab37eSRobert Watson if (error) 261195fab37eSRobert Watson return (error); 261295fab37eSRobert Watson 261395fab37eSRobert Watson error = mac_internalize(&intlabel, &newlabel); 261495fab37eSRobert Watson if (error) 261595fab37eSRobert Watson return (error); 261695fab37eSRobert Watson 261795fab37eSRobert Watson /* 261895fab37eSRobert Watson * XXX: Note that this is a redundant privilege check, since 261995fab37eSRobert Watson * policies impose this check themselves if required by the 262095fab37eSRobert Watson * policy. Eventually, this should go away. 262195fab37eSRobert Watson */ 262295fab37eSRobert Watson error = suser_cred(cred, 0); 262395fab37eSRobert Watson if (error) 262495fab37eSRobert Watson goto out; 262595fab37eSRobert Watson 262695fab37eSRobert Watson MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label, 262795fab37eSRobert Watson &intlabel); 262895fab37eSRobert Watson if (error) 262995fab37eSRobert Watson goto out; 263095fab37eSRobert Watson 263195fab37eSRobert Watson MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel); 263295fab37eSRobert Watson 263395fab37eSRobert Watson out: 263495fab37eSRobert Watson mac_destroy_temp(&intlabel); 263595fab37eSRobert Watson return (error); 263695fab37eSRobert Watson } 263795fab37eSRobert Watson 263895fab37eSRobert Watson void 263995fab37eSRobert Watson mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp) 264095fab37eSRobert Watson { 264195fab37eSRobert Watson 264295fab37eSRobert Watson MAC_PERFORM(create_devfs_vnode, de, &de->de_label, vp, &vp->v_label); 264395fab37eSRobert Watson } 264495fab37eSRobert Watson 264595fab37eSRobert Watson void 264695fab37eSRobert Watson mac_create_devfs_device(dev_t dev, struct devfs_dirent *de) 264795fab37eSRobert Watson { 264895fab37eSRobert Watson 264995fab37eSRobert Watson MAC_PERFORM(create_devfs_device, dev, de, &de->de_label); 265095fab37eSRobert Watson } 265195fab37eSRobert Watson 265295fab37eSRobert Watson static int 265395fab37eSRobert Watson mac_stdcreatevnode_ea(struct vnode *vp) 265495fab37eSRobert Watson { 265595fab37eSRobert Watson int error; 265695fab37eSRobert Watson 265795fab37eSRobert Watson MAC_CHECK(stdcreatevnode_ea, vp, &vp->v_label); 265895fab37eSRobert Watson 265995fab37eSRobert Watson return (error); 266095fab37eSRobert Watson } 266195fab37eSRobert Watson 266295fab37eSRobert Watson void 266395fab37eSRobert Watson mac_create_devfs_directory(char *dirname, int dirnamelen, 266495fab37eSRobert Watson struct devfs_dirent *de) 266595fab37eSRobert Watson { 266695fab37eSRobert Watson 266795fab37eSRobert Watson MAC_PERFORM(create_devfs_directory, dirname, dirnamelen, de, 266895fab37eSRobert Watson &de->de_label); 266995fab37eSRobert Watson } 267095fab37eSRobert Watson 267195fab37eSRobert Watson /* 267295fab37eSRobert Watson * When a new vnode is created, this call will initialize its label. 267395fab37eSRobert Watson */ 267495fab37eSRobert Watson void 267595fab37eSRobert Watson mac_create_vnode(struct ucred *cred, struct vnode *parent, 267695fab37eSRobert Watson struct vnode *child) 267795fab37eSRobert Watson { 267895fab37eSRobert Watson int error; 267995fab37eSRobert Watson 268095fab37eSRobert Watson ASSERT_VOP_LOCKED(parent, "mac_create_vnode"); 268195fab37eSRobert Watson ASSERT_VOP_LOCKED(child, "mac_create_vnode"); 268295fab37eSRobert Watson 268395fab37eSRobert Watson error = vn_refreshlabel(parent, cred); 268495fab37eSRobert Watson if (error) { 268595fab37eSRobert Watson printf("mac_create_vnode: vn_refreshlabel returned %d\n", 268695fab37eSRobert Watson error); 268795fab37eSRobert Watson printf("mac_create_vnode: using old vnode label\n"); 268895fab37eSRobert Watson } 268995fab37eSRobert Watson 269095fab37eSRobert Watson MAC_PERFORM(create_vnode, cred, parent, &parent->v_label, child, 269195fab37eSRobert Watson &child->v_label); 269295fab37eSRobert Watson } 269395fab37eSRobert Watson 269495fab37eSRobert Watson int 269595fab37eSRobert Watson mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 269695fab37eSRobert Watson struct mac *extmac) 269795fab37eSRobert Watson { 269895fab37eSRobert Watson struct label intlabel; 269995fab37eSRobert Watson int error; 270095fab37eSRobert Watson 270195fab37eSRobert Watson error = mac_internalize(&intlabel, extmac); 270295fab37eSRobert Watson if (error) 270395fab37eSRobert Watson return (error); 270495fab37eSRobert Watson 270595fab37eSRobert Watson mac_check_socket_relabel(cred, so, &intlabel); 270695fab37eSRobert Watson if (error) { 270795fab37eSRobert Watson mac_destroy_temp(&intlabel); 270895fab37eSRobert Watson return (error); 270995fab37eSRobert Watson } 271095fab37eSRobert Watson 271195fab37eSRobert Watson mac_relabel_socket(cred, so, &intlabel); 271295fab37eSRobert Watson 271395fab37eSRobert Watson mac_destroy_temp(&intlabel); 271495fab37eSRobert Watson return (0); 271595fab37eSRobert Watson } 271695fab37eSRobert Watson 271795fab37eSRobert Watson int 271895fab37eSRobert Watson mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label) 271995fab37eSRobert Watson { 272095fab37eSRobert Watson int error; 272195fab37eSRobert Watson 272295fab37eSRobert Watson error = mac_check_pipe_relabel(cred, pipe, label); 272395fab37eSRobert Watson if (error) 272495fab37eSRobert Watson return (error); 272595fab37eSRobert Watson 272695fab37eSRobert Watson mac_relabel_pipe(cred, pipe, label); 272795fab37eSRobert Watson 272895fab37eSRobert Watson return (0); 272995fab37eSRobert Watson } 273095fab37eSRobert Watson 273195fab37eSRobert Watson int 273295fab37eSRobert Watson mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 273395fab37eSRobert Watson struct mac *extmac) 273495fab37eSRobert Watson { 273595fab37eSRobert Watson 273695fab37eSRobert Watson return (mac_externalize(&so->so_label, extmac)); 273795fab37eSRobert Watson } 273895fab37eSRobert Watson 273995fab37eSRobert Watson int 274095fab37eSRobert Watson mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 274195fab37eSRobert Watson struct mac *extmac) 274295fab37eSRobert Watson { 274395fab37eSRobert Watson 274495fab37eSRobert Watson return (mac_externalize(&so->so_peerlabel, extmac)); 274595fab37eSRobert Watson } 274695fab37eSRobert Watson 274795fab37eSRobert Watson /* 274895fab37eSRobert Watson * Implementation of VOP_SETLABEL() that relies on extended attributes 274995fab37eSRobert Watson * to store label data. Can be referenced by filesystems supporting 275095fab37eSRobert Watson * extended attributes. 275195fab37eSRobert Watson */ 275295fab37eSRobert Watson int 275395fab37eSRobert Watson vop_stdsetlabel_ea(struct vop_setlabel_args *ap) 275495fab37eSRobert Watson { 275595fab37eSRobert Watson struct vnode *vp = ap->a_vp; 275695fab37eSRobert Watson struct label *intlabel = ap->a_label; 275795fab37eSRobert Watson struct mac extmac; 275895fab37eSRobert Watson int error; 275995fab37eSRobert Watson 276095fab37eSRobert Watson ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea"); 276195fab37eSRobert Watson 276295fab37eSRobert Watson /* 276395fab37eSRobert Watson * XXX: Eventually call out to EA check/set calls here. 276495fab37eSRobert Watson * Be particularly careful to avoid race conditions, 276595fab37eSRobert Watson * consistency problems, and stability problems when 276695fab37eSRobert Watson * dealing with multiple EAs. In particular, we require 276795fab37eSRobert Watson * the ability to write multiple EAs on the same file in 276895fab37eSRobert Watson * a single transaction, which the current EA interface 276995fab37eSRobert Watson * does not provide. 277095fab37eSRobert Watson */ 277195fab37eSRobert Watson 277295fab37eSRobert Watson error = mac_externalize(intlabel, &extmac); 277395fab37eSRobert Watson if (error) 277495fab37eSRobert Watson return (error); 277595fab37eSRobert Watson 277695fab37eSRobert Watson error = vn_extattr_set(vp, IO_NODELOCKED, 277795fab37eSRobert Watson FREEBSD_MAC_EXTATTR_NAMESPACE, FREEBSD_MAC_EXTATTR_NAME, 277895fab37eSRobert Watson sizeof(extmac), (char *)&extmac, curthread); 277995fab37eSRobert Watson if (error) 278095fab37eSRobert Watson return (error); 278195fab37eSRobert Watson 278295fab37eSRobert Watson mac_relabel_vnode(ap->a_cred, vp, intlabel); 278395fab37eSRobert Watson 2784e6e370a7SJeff Roberson vp->v_vflag |= VV_CACHEDLABEL; 278595fab37eSRobert Watson 278695fab37eSRobert Watson return (0); 278795fab37eSRobert Watson } 278895fab37eSRobert Watson 278995fab37eSRobert Watson static int 279095fab37eSRobert Watson vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred) 279195fab37eSRobert Watson { 279295fab37eSRobert Watson int error; 279395fab37eSRobert Watson 279495fab37eSRobert Watson if (vp->v_mount == NULL) { 279595fab37eSRobert Watson /* printf("vn_setlabel: null v_mount\n"); */ 279695fab37eSRobert Watson if (vp->v_tag != VT_NON) 279795fab37eSRobert Watson printf("vn_setlabel: null v_mount with non-VT_NON\n"); 279895fab37eSRobert Watson return (EBADF); 279995fab37eSRobert Watson } 280095fab37eSRobert Watson 280195fab37eSRobert Watson if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0) 280295fab37eSRobert Watson return (EOPNOTSUPP); 280395fab37eSRobert Watson 280495fab37eSRobert Watson /* 280595fab37eSRobert Watson * Multi-phase commit. First check the policies to confirm the 280695fab37eSRobert Watson * change is OK. Then commit via the filesystem. Finally, 280795fab37eSRobert Watson * update the actual vnode label. Question: maybe the filesystem 280895fab37eSRobert Watson * should update the vnode at the end as part of VOP_SETLABEL()? 280995fab37eSRobert Watson */ 281095fab37eSRobert Watson error = mac_check_vnode_relabel(cred, vp, intlabel); 281195fab37eSRobert Watson if (error) 281295fab37eSRobert Watson return (error); 281395fab37eSRobert Watson 281495fab37eSRobert Watson /* 281595fab37eSRobert Watson * VADMIN provides the opportunity for the filesystem to make 281695fab37eSRobert Watson * decisions about who is and is not able to modify labels 281795fab37eSRobert Watson * and protections on files. This might not be right. We can't 281895fab37eSRobert Watson * assume VOP_SETLABEL() will do it, because we might implement 281995fab37eSRobert Watson * that as part of vop_stdsetlabel_ea(). 282095fab37eSRobert Watson */ 282195fab37eSRobert Watson error = VOP_ACCESS(vp, VADMIN, cred, curthread); 282295fab37eSRobert Watson if (error) 282395fab37eSRobert Watson return (error); 282495fab37eSRobert Watson 282595fab37eSRobert Watson error = VOP_SETLABEL(vp, intlabel, cred, curthread); 282695fab37eSRobert Watson if (error) 282795fab37eSRobert Watson return (error); 282895fab37eSRobert Watson 282995fab37eSRobert Watson return (0); 283095fab37eSRobert Watson } 283195fab37eSRobert Watson 283295fab37eSRobert Watson /* 283395fab37eSRobert Watson * MPSAFE 283495fab37eSRobert Watson */ 283595fab37eSRobert Watson int 283695fab37eSRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 283795fab37eSRobert Watson { 283895fab37eSRobert Watson struct mac extmac; 283995fab37eSRobert Watson int error; 284095fab37eSRobert Watson 284195fab37eSRobert Watson error = mac_externalize(&td->td_ucred->cr_label, &extmac); 284295fab37eSRobert Watson if (error == 0) 284395fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 284495fab37eSRobert Watson 284595fab37eSRobert Watson return (error); 284695fab37eSRobert Watson } 284795fab37eSRobert Watson 284895fab37eSRobert Watson /* 284995fab37eSRobert Watson * MPSAFE 285095fab37eSRobert Watson * 285195fab37eSRobert Watson * XXX: Needs to be re-written for proc locking. 285295fab37eSRobert Watson */ 285395fab37eSRobert Watson int 285495fab37eSRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 285595fab37eSRobert Watson { 285695fab37eSRobert Watson struct ucred *newcred, *oldcred; 285795fab37eSRobert Watson struct proc *p; 285895fab37eSRobert Watson struct mac extmac; 285995fab37eSRobert Watson struct label intlabel; 286095fab37eSRobert Watson int error; 286195fab37eSRobert Watson 286295fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 286395fab37eSRobert Watson if (error) 286495fab37eSRobert Watson return (error); 286595fab37eSRobert Watson 286695fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 286795fab37eSRobert Watson if (error) 286895fab37eSRobert Watson return (error); 286995fab37eSRobert Watson 287095fab37eSRobert Watson newcred = crget(); 287195fab37eSRobert Watson 287295fab37eSRobert Watson p = td->td_proc; 287395fab37eSRobert Watson PROC_LOCK(p); 287495fab37eSRobert Watson oldcred = p->p_ucred; 287595fab37eSRobert Watson 287695fab37eSRobert Watson error = mac_check_cred_relabel(oldcred, &intlabel); 287795fab37eSRobert Watson if (error) { 287895fab37eSRobert Watson PROC_UNLOCK(p); 287995fab37eSRobert Watson mac_destroy_temp(&intlabel); 288095fab37eSRobert Watson crfree(newcred); 288195fab37eSRobert Watson return (error); 288295fab37eSRobert Watson } 288395fab37eSRobert Watson 288495fab37eSRobert Watson setsugid(p); 288595fab37eSRobert Watson crcopy(newcred, oldcred); 288695fab37eSRobert Watson PROC_UNLOCK(p); 288795fab37eSRobert Watson mac_relabel_cred(newcred, &intlabel); 288895fab37eSRobert Watson 288995fab37eSRobert Watson PROC_LOCK(p); 289095fab37eSRobert Watson p->p_ucred = newcred; 289195fab37eSRobert Watson PROC_UNLOCK(p); 289295fab37eSRobert Watson crfree(oldcred); 289395fab37eSRobert Watson mac_destroy_temp(&intlabel); 289495fab37eSRobert Watson return (0); 289595fab37eSRobert Watson } 289695fab37eSRobert Watson 289795fab37eSRobert Watson /* 289895fab37eSRobert Watson * MPSAFE 289995fab37eSRobert Watson */ 290095fab37eSRobert Watson int 290195fab37eSRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 290295fab37eSRobert Watson { 290395fab37eSRobert Watson struct file *fp; 290495fab37eSRobert Watson struct mac extmac; 290595fab37eSRobert Watson struct vnode *vp; 290695fab37eSRobert Watson struct pipe *pipe; 290795fab37eSRobert Watson int error; 290895fab37eSRobert Watson 290995fab37eSRobert Watson mtx_lock(&Giant); 291095fab37eSRobert Watson 291195fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 291295fab37eSRobert Watson if (error) 291395fab37eSRobert Watson goto out; 291495fab37eSRobert Watson 291595fab37eSRobert Watson switch (fp->f_type) { 291695fab37eSRobert Watson case DTYPE_FIFO: 291795fab37eSRobert Watson case DTYPE_VNODE: 291895fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 291995fab37eSRobert Watson 292095fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 292195fab37eSRobert Watson error = vn_refreshlabel(vp, td->td_ucred); 292295fab37eSRobert Watson if (error == 0) 292395fab37eSRobert Watson error = mac_externalize(&vp->v_label, &extmac); 292495fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 292595fab37eSRobert Watson break; 292695fab37eSRobert Watson case DTYPE_PIPE: 292795fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 292895fab37eSRobert Watson error = mac_externalize(pipe->pipe_label, &extmac); 292995fab37eSRobert Watson break; 293095fab37eSRobert Watson default: 293195fab37eSRobert Watson error = EINVAL; 293295fab37eSRobert Watson } 293395fab37eSRobert Watson 293495fab37eSRobert Watson if (error == 0) 293595fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 293695fab37eSRobert Watson 293795fab37eSRobert Watson fdrop(fp, td); 293895fab37eSRobert Watson 293995fab37eSRobert Watson out: 294095fab37eSRobert Watson mtx_unlock(&Giant); 294195fab37eSRobert Watson return (error); 294295fab37eSRobert Watson } 294395fab37eSRobert Watson 294495fab37eSRobert Watson /* 294595fab37eSRobert Watson * MPSAFE 294695fab37eSRobert Watson */ 294795fab37eSRobert Watson int 294895fab37eSRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 294995fab37eSRobert Watson { 295095fab37eSRobert Watson struct nameidata nd; 295195fab37eSRobert Watson struct mac extmac; 295295fab37eSRobert Watson int error; 295395fab37eSRobert Watson 295495fab37eSRobert Watson mtx_lock(&Giant); 295595fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 295695fab37eSRobert Watson SCARG(uap, path_p), td); 295795fab37eSRobert Watson error = namei(&nd); 295895fab37eSRobert Watson if (error) 295995fab37eSRobert Watson goto out; 296095fab37eSRobert Watson 296195fab37eSRobert Watson error = vn_refreshlabel(nd.ni_vp, td->td_ucred); 296295fab37eSRobert Watson if (error == 0) 296395fab37eSRobert Watson error = mac_externalize(&nd.ni_vp->v_label, &extmac); 296495fab37eSRobert Watson NDFREE(&nd, 0); 296595fab37eSRobert Watson if (error) 296695fab37eSRobert Watson goto out; 296795fab37eSRobert Watson 296895fab37eSRobert Watson error = copyout(&extmac, SCARG(uap, mac_p), sizeof(extmac)); 296995fab37eSRobert Watson 297095fab37eSRobert Watson out: 297195fab37eSRobert Watson mtx_unlock(&Giant); 297295fab37eSRobert Watson return (error); 297395fab37eSRobert Watson } 297495fab37eSRobert Watson 297595fab37eSRobert Watson /* 297695fab37eSRobert Watson * MPSAFE 297795fab37eSRobert Watson */ 297895fab37eSRobert Watson int 297995fab37eSRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 298095fab37eSRobert Watson { 298195fab37eSRobert Watson struct file *fp; 298295fab37eSRobert Watson struct mac extmac; 298395fab37eSRobert Watson struct label intlabel; 298495fab37eSRobert Watson struct mount *mp; 298595fab37eSRobert Watson struct vnode *vp; 298695fab37eSRobert Watson struct pipe *pipe; 298795fab37eSRobert Watson int error; 298895fab37eSRobert Watson 298995fab37eSRobert Watson mtx_lock(&Giant); 299095fab37eSRobert Watson error = fget(td, SCARG(uap, fd), &fp); 299195fab37eSRobert Watson if (error) 299295fab37eSRobert Watson goto out1; 299395fab37eSRobert Watson 299495fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 299595fab37eSRobert Watson if (error) 299695fab37eSRobert Watson goto out2; 299795fab37eSRobert Watson 299895fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 299995fab37eSRobert Watson if (error) 300095fab37eSRobert Watson goto out2; 300195fab37eSRobert Watson 300295fab37eSRobert Watson switch (fp->f_type) { 300395fab37eSRobert Watson case DTYPE_FIFO: 300495fab37eSRobert Watson case DTYPE_VNODE: 300595fab37eSRobert Watson vp = (struct vnode *)fp->f_data; 300695fab37eSRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 300795fab37eSRobert Watson if (error != 0) 300895fab37eSRobert Watson break; 300995fab37eSRobert Watson 301095fab37eSRobert Watson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 301195fab37eSRobert Watson error = vn_setlabel(vp, &intlabel, td->td_ucred); 301295fab37eSRobert Watson VOP_UNLOCK(vp, 0, td); 301395fab37eSRobert Watson vn_finished_write(mp); 301495fab37eSRobert Watson mac_destroy_temp(&intlabel); 301595fab37eSRobert Watson break; 301695fab37eSRobert Watson case DTYPE_PIPE: 301795fab37eSRobert Watson pipe = (struct pipe *)fp->f_data; 301895fab37eSRobert Watson error = mac_pipe_label_set(td->td_ucred, pipe, &intlabel); 301995fab37eSRobert Watson break; 302095fab37eSRobert Watson default: 302195fab37eSRobert Watson error = EINVAL; 302295fab37eSRobert Watson } 302395fab37eSRobert Watson 302495fab37eSRobert Watson out2: 302595fab37eSRobert Watson fdrop(fp, td); 302695fab37eSRobert Watson out1: 302795fab37eSRobert Watson mtx_unlock(&Giant); 302895fab37eSRobert Watson return (error); 302995fab37eSRobert Watson } 303095fab37eSRobert Watson 303195fab37eSRobert Watson /* 303295fab37eSRobert Watson * MPSAFE 303395fab37eSRobert Watson */ 303495fab37eSRobert Watson int 303595fab37eSRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 303695fab37eSRobert Watson { 303795fab37eSRobert Watson struct nameidata nd; 303895fab37eSRobert Watson struct mac extmac; 303995fab37eSRobert Watson struct label intlabel; 304095fab37eSRobert Watson struct mount *mp; 304195fab37eSRobert Watson int error; 304295fab37eSRobert Watson 304395fab37eSRobert Watson mtx_lock(&Giant); 304495fab37eSRobert Watson 304595fab37eSRobert Watson error = copyin(SCARG(uap, mac_p), &extmac, sizeof(extmac)); 304695fab37eSRobert Watson if (error) 304795fab37eSRobert Watson goto out; 304895fab37eSRobert Watson 304995fab37eSRobert Watson error = mac_internalize(&intlabel, &extmac); 305095fab37eSRobert Watson if (error) 305195fab37eSRobert Watson goto out; 305295fab37eSRobert Watson 305395fab37eSRobert Watson NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, 305495fab37eSRobert Watson SCARG(uap, path_p), td); 305595fab37eSRobert Watson error = namei(&nd); 305695fab37eSRobert Watson if (error) 305795fab37eSRobert Watson goto out2; 305895fab37eSRobert Watson error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH); 305995fab37eSRobert Watson if (error) 306095fab37eSRobert Watson goto out2; 306195fab37eSRobert Watson 306295fab37eSRobert Watson error = vn_setlabel(nd.ni_vp, &intlabel, td->td_ucred); 306395fab37eSRobert Watson 306495fab37eSRobert Watson vn_finished_write(mp); 306595fab37eSRobert Watson out2: 306695fab37eSRobert Watson mac_destroy_temp(&intlabel); 306795fab37eSRobert Watson NDFREE(&nd, 0); 306895fab37eSRobert Watson out: 306995fab37eSRobert Watson mtx_unlock(&Giant); 307095fab37eSRobert Watson return (error); 307195fab37eSRobert Watson } 307295fab37eSRobert Watson 307395fab37eSRobert Watson SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL); 307495fab37eSRobert Watson SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL); 307595fab37eSRobert Watson 307695fab37eSRobert Watson #else /* !MAC */ 30777bc82500SRobert Watson 30787bc82500SRobert Watson int 30797bc82500SRobert Watson __mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap) 30807bc82500SRobert Watson { 30817bc82500SRobert Watson 30827bc82500SRobert Watson return (ENOSYS); 30837bc82500SRobert Watson } 30847bc82500SRobert Watson 30857bc82500SRobert Watson int 30867bc82500SRobert Watson __mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap) 30877bc82500SRobert Watson { 30887bc82500SRobert Watson 30897bc82500SRobert Watson return (ENOSYS); 30907bc82500SRobert Watson } 30917bc82500SRobert Watson 30927bc82500SRobert Watson int 30937bc82500SRobert Watson __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap) 30947bc82500SRobert Watson { 30957bc82500SRobert Watson 30967bc82500SRobert Watson return (ENOSYS); 30977bc82500SRobert Watson } 30987bc82500SRobert Watson 30997bc82500SRobert Watson int 31007bc82500SRobert Watson __mac_get_file(struct thread *td, struct __mac_get_file_args *uap) 31017bc82500SRobert Watson { 31027bc82500SRobert Watson 31037bc82500SRobert Watson return (ENOSYS); 31047bc82500SRobert Watson } 31057bc82500SRobert Watson 31067bc82500SRobert Watson int 31077bc82500SRobert Watson __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap) 31087bc82500SRobert Watson { 31097bc82500SRobert Watson 31107bc82500SRobert Watson return (ENOSYS); 31117bc82500SRobert Watson } 31127bc82500SRobert Watson 31137bc82500SRobert Watson int 31147bc82500SRobert Watson __mac_set_file(struct thread *td, struct __mac_set_file_args *uap) 31157bc82500SRobert Watson { 31167bc82500SRobert Watson 31177bc82500SRobert Watson return (ENOSYS); 31187bc82500SRobert Watson } 311995fab37eSRobert Watson 312095fab37eSRobert Watson #endif /* !MAC */ 3121