ugidfw_vnode.c revision 172930
1101099Srwatson/*- 2166905Srwatson * Copyright (c) 1999-2002, 2007 Robert N. M. Watson 3145412Strhodes * Copyright (c) 2001-2005 Networks Associates Technology, Inc. 4171253Srwatson * Copyright (c) 2005 Tom Rhodes 5172930Srwatson * Copyright (c) 2006 SPARTA, Inc. 6101099Srwatson * All rights reserved. 7101099Srwatson * 8101099Srwatson * This software was developed by Robert Watson for the TrustedBSD Project. 9145412Strhodes * It was later enhanced by Tom Rhodes for the TrustedBSD Project. 10101099Srwatson * 11106393Srwatson * This software was developed for the FreeBSD Project in part by Network 12106393Srwatson * Associates Laboratories, the Security Research Division of Network 13106393Srwatson * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 14106393Srwatson * as part of the DARPA CHATS research program. 15101099Srwatson * 16172930Srwatson * This software was enhanced by SPARTA ISSO under SPAWAR contract 17172930Srwatson * N66001-04-C-6019 ("SEFOS"). 18172930Srwatson * 19101099Srwatson * Redistribution and use in source and binary forms, with or without 20101099Srwatson * modification, are permitted provided that the following conditions 21101099Srwatson * are met: 22101099Srwatson * 1. Redistributions of source code must retain the above copyright 23101099Srwatson * notice, this list of conditions and the following disclaimer. 24101099Srwatson * 2. Redistributions in binary form must reproduce the above copyright 25101099Srwatson * notice, this list of conditions and the following disclaimer in the 26101099Srwatson * documentation and/or other materials provided with the distribution. 27101099Srwatson * 28101099Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 29101099Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30101099Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31101099Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 32101099Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33101099Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34101099Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35101099Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36101099Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37101099Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38101099Srwatson * SUCH DAMAGE. 39101099Srwatson * 40101099Srwatson * $FreeBSD: head/sys/security/mac_bsdextended/mac_bsdextended.c 172930 2007-10-24 19:04:04Z rwatson $ 41101099Srwatson */ 42136774Srwatson 43101099Srwatson/* 44101099Srwatson * Developed by the TrustedBSD Project. 45171253Srwatson * 46171253Srwatson * "BSD Extended" MAC policy, allowing the administrator to impose mandatory 47171253Srwatson * firewall-like rules regarding users and file system objects. 48101099Srwatson */ 49101099Srwatson 50101099Srwatson#include <sys/param.h> 51101099Srwatson#include <sys/acl.h> 52101099Srwatson#include <sys/kernel.h> 53157986Sdwmalone#include <sys/jail.h> 54145412Strhodes#include <sys/lock.h> 55101099Srwatson#include <sys/malloc.h> 56166905Srwatson#include <sys/module.h> 57101099Srwatson#include <sys/mount.h> 58145412Strhodes#include <sys/mutex.h> 59170689Srwatson#include <sys/priv.h> 60101099Srwatson#include <sys/systm.h> 61101099Srwatson#include <sys/vnode.h> 62101099Srwatson#include <sys/sysctl.h> 63134132Strhodes#include <sys/syslog.h> 64101099Srwatson 65165469Srwatson#include <security/mac/mac_policy.h> 66101099Srwatson#include <security/mac_bsdextended/mac_bsdextended.h> 67101099Srwatson 68145412Strhodesstatic struct mtx mac_bsdextended_mtx; 69145412Strhodes 70101099SrwatsonSYSCTL_DECL(_security_mac); 71101099Srwatson 72101099SrwatsonSYSCTL_NODE(_security_mac, OID_AUTO, bsdextended, CTLFLAG_RW, 0, 73101099Srwatson "TrustedBSD extended BSD MAC policy controls"); 74101099Srwatson 75101099Srwatsonstatic int mac_bsdextended_enabled = 1; 76101099SrwatsonSYSCTL_INT(_security_mac_bsdextended, OID_AUTO, enabled, CTLFLAG_RW, 77101099Srwatson &mac_bsdextended_enabled, 0, "Enforce extended BSD policy"); 78101099SrwatsonTUNABLE_INT("security.mac.bsdextended.enabled", &mac_bsdextended_enabled); 79101099Srwatson 80101099SrwatsonMALLOC_DEFINE(M_MACBSDEXTENDED, "mac_bsdextended", "BSD Extended MAC rule"); 81101099Srwatson 82101099Srwatson#define MAC_BSDEXTENDED_MAXRULES 250 83101099Srwatsonstatic struct mac_bsdextended_rule *rules[MAC_BSDEXTENDED_MAXRULES]; 84101099Srwatsonstatic int rule_count = 0; 85101099Srwatsonstatic int rule_slots = 0; 86157986Sdwmalonestatic int rule_version = MB_VERSION; 87101099Srwatson 88101099SrwatsonSYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_count, CTLFLAG_RD, 89101099Srwatson &rule_count, 0, "Number of defined rules\n"); 90101099SrwatsonSYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_slots, CTLFLAG_RD, 91101099Srwatson &rule_slots, 0, "Number of used rule slots\n"); 92157986SdwmaloneSYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_version, CTLFLAG_RD, 93157986Sdwmalone &rule_version, 0, "Version number for API\n"); 94101099Srwatson 95134132Strhodes/* 96171253Srwatson * This is just used for logging purposes, eventually we would like to log 97171253Srwatson * much more then failed requests. 98134132Strhodes */ 99134132Strhodesstatic int mac_bsdextended_logging; 100134132StrhodesSYSCTL_INT(_security_mac_bsdextended, OID_AUTO, logging, CTLFLAG_RW, 101134132Strhodes &mac_bsdextended_logging, 0, "Log failed authorization requests"); 102134132Strhodes 103134132Strhodes/* 104171253Srwatson * This tunable is here for compatibility. It will allow the user to switch 105171253Srwatson * between the new mode (first rule matches) and the old functionality (all 106171253Srwatson * rules match). 107134131Strhodes */ 108101099Srwatsonstatic int 109134131Strhodesmac_bsdextended_firstmatch_enabled; 110134131StrhodesSYSCTL_INT(_security_mac_bsdextended, OID_AUTO, firstmatch_enabled, 111171253Srwatson CTLFLAG_RW, &mac_bsdextended_firstmatch_enabled, 1, 112171253Srwatson "Disable/enable match first rule functionality"); 113134131Strhodes 114134131Strhodesstatic int 115101099Srwatsonmac_bsdextended_rule_valid(struct mac_bsdextended_rule *rule) 116101099Srwatson{ 117101099Srwatson 118157986Sdwmalone if ((rule->mbr_subject.mbs_flags | MBS_ALL_FLAGS) != MBS_ALL_FLAGS) 119101099Srwatson return (EINVAL); 120157986Sdwmalone if ((rule->mbr_subject.mbs_neg | MBS_ALL_FLAGS) != MBS_ALL_FLAGS) 121101099Srwatson return (EINVAL); 122157986Sdwmalone if ((rule->mbr_object.mbo_flags | MBO_ALL_FLAGS) != MBO_ALL_FLAGS) 123157986Sdwmalone return (EINVAL); 124157986Sdwmalone if ((rule->mbr_object.mbo_neg | MBO_ALL_FLAGS) != MBO_ALL_FLAGS) 125157986Sdwmalone return (EINVAL); 126157986Sdwmalone if ((rule->mbr_object.mbo_neg | MBO_TYPE_DEFINED) && 127157986Sdwmalone (rule->mbr_object.mbo_type | MBO_ALL_TYPE) != MBO_ALL_TYPE) 128157986Sdwmalone return (EINVAL); 129136739Srwatson if ((rule->mbr_mode | MBI_ALLPERM) != MBI_ALLPERM) 130101099Srwatson return (EINVAL); 131101099Srwatson return (0); 132101099Srwatson} 133101099Srwatson 134101099Srwatsonstatic int 135101099Srwatsonsysctl_rule(SYSCTL_HANDLER_ARGS) 136101099Srwatson{ 137101099Srwatson struct mac_bsdextended_rule temprule, *ruleptr; 138101099Srwatson u_int namelen; 139101099Srwatson int error, index, *name; 140101099Srwatson 141145412Strhodes error = 0; 142101099Srwatson name = (int *)arg1; 143101099Srwatson namelen = arg2; 144101099Srwatson if (namelen != 1) 145101099Srwatson return (EINVAL); 146101099Srwatson index = name[0]; 147154386Scsjp if (index >= MAC_BSDEXTENDED_MAXRULES) 148101099Srwatson return (ENOENT); 149101099Srwatson 150145412Strhodes ruleptr = NULL; 151145412Strhodes if (req->newptr && req->newlen != 0) { 152145412Strhodes error = SYSCTL_IN(req, &temprule, sizeof(temprule)); 153101099Srwatson if (error) 154101099Srwatson return (error); 155145412Strhodes MALLOC(ruleptr, struct mac_bsdextended_rule *, 156145412Strhodes sizeof(*ruleptr), M_MACBSDEXTENDED, M_WAITOK | M_ZERO); 157101099Srwatson } 158101099Srwatson 159145412Strhodes mtx_lock(&mac_bsdextended_mtx); 160145412Strhodes if (req->oldptr) { 161145412Strhodes if (index < 0 || index > rule_slots + 1) { 162145412Strhodes error = ENOENT; 163145412Strhodes goto out; 164101099Srwatson } 165145412Strhodes if (rules[index] == NULL) { 166145412Strhodes error = ENOENT; 167145412Strhodes goto out; 168145412Strhodes } 169145412Strhodes temprule = *rules[index]; 170145412Strhodes } 171145412Strhodes if (req->newptr && req->newlen == 0) { 172145412Strhodes KASSERT(ruleptr == NULL, ("sysctl_rule: ruleptr != NULL")); 173145412Strhodes ruleptr = rules[index]; 174145412Strhodes if (ruleptr == NULL) { 175145412Strhodes error = ENOENT; 176145412Strhodes goto out; 177145412Strhodes } 178145412Strhodes rule_count--; 179145412Strhodes rules[index] = NULL; 180145412Strhodes } else if (req->newptr) { 181101099Srwatson error = mac_bsdextended_rule_valid(&temprule); 182101099Srwatson if (error) 183145412Strhodes goto out; 184101099Srwatson if (rules[index] == NULL) { 185101099Srwatson *ruleptr = temprule; 186101099Srwatson rules[index] = ruleptr; 187145412Strhodes ruleptr = NULL; 188145412Strhodes if (index + 1 > rule_slots) 189145412Strhodes rule_slots = index + 1; 190101099Srwatson rule_count++; 191171253Srwatson } else 192101099Srwatson *rules[index] = temprule; 193101099Srwatson } 194145412Strhodesout: 195145412Strhodes mtx_unlock(&mac_bsdextended_mtx); 196145412Strhodes if (ruleptr != NULL) 197145412Strhodes FREE(ruleptr, M_MACBSDEXTENDED); 198148482Strhodes if (req->oldptr && error == 0) 199145412Strhodes error = SYSCTL_OUT(req, &temprule, sizeof(temprule)); 200148482Strhodes return (error); 201101099Srwatson} 202101099Srwatson 203171253SrwatsonSYSCTL_NODE(_security_mac_bsdextended, OID_AUTO, rules, CTLFLAG_RW, 204171253Srwatson sysctl_rule, "BSD extended MAC rules"); 205101099Srwatson 206101099Srwatsonstatic void 207101099Srwatsonmac_bsdextended_init(struct mac_policy_conf *mpc) 208101099Srwatson{ 209101099Srwatson 210145412Strhodes mtx_init(&mac_bsdextended_mtx, "mac_bsdextended lock", NULL, MTX_DEF); 211101099Srwatson} 212101099Srwatson 213101099Srwatsonstatic void 214101099Srwatsonmac_bsdextended_destroy(struct mac_policy_conf *mpc) 215101099Srwatson{ 216101099Srwatson 217145412Strhodes mtx_destroy(&mac_bsdextended_mtx); 218101099Srwatson} 219101099Srwatson 220101099Srwatsonstatic int 221101099Srwatsonmac_bsdextended_rulecheck(struct mac_bsdextended_rule *rule, 222157986Sdwmalone struct ucred *cred, struct vnode *vp, struct vattr *vap, int acc_mode) 223101099Srwatson{ 224101099Srwatson int match; 225157986Sdwmalone int i; 226101099Srwatson 227101099Srwatson /* 228101099Srwatson * Is there a subject match? 229101099Srwatson */ 230145412Strhodes mtx_assert(&mac_bsdextended_mtx, MA_OWNED); 231157986Sdwmalone if (rule->mbr_subject.mbs_flags & MBS_UID_DEFINED) { 232157986Sdwmalone match = ((cred->cr_uid <= rule->mbr_subject.mbs_uid_max && 233157986Sdwmalone cred->cr_uid >= rule->mbr_subject.mbs_uid_min) || 234157986Sdwmalone (cred->cr_ruid <= rule->mbr_subject.mbs_uid_max && 235157986Sdwmalone cred->cr_ruid >= rule->mbr_subject.mbs_uid_min) || 236157986Sdwmalone (cred->cr_svuid <= rule->mbr_subject.mbs_uid_max && 237157986Sdwmalone cred->cr_svuid >= rule->mbr_subject.mbs_uid_min)); 238157986Sdwmalone if (rule->mbr_subject.mbs_neg & MBS_UID_DEFINED) 239101099Srwatson match = !match; 240101099Srwatson if (!match) 241101099Srwatson return (0); 242101099Srwatson } 243101099Srwatson 244157986Sdwmalone if (rule->mbr_subject.mbs_flags & MBS_GID_DEFINED) { 245157986Sdwmalone match = ((cred->cr_rgid <= rule->mbr_subject.mbs_gid_max && 246157986Sdwmalone cred->cr_rgid >= rule->mbr_subject.mbs_gid_min) || 247157986Sdwmalone (cred->cr_svgid <= rule->mbr_subject.mbs_gid_max && 248157986Sdwmalone cred->cr_svgid >= rule->mbr_subject.mbs_gid_min)); 249157986Sdwmalone if (!match) { 250171253Srwatson for (i = 0; i < cred->cr_ngroups; i++) { 251157986Sdwmalone if (cred->cr_groups[i] 252157986Sdwmalone <= rule->mbr_subject.mbs_gid_max && 253157986Sdwmalone cred->cr_groups[i] 254157986Sdwmalone >= rule->mbr_subject.mbs_gid_min) { 255157986Sdwmalone match = 1; 256157986Sdwmalone break; 257157986Sdwmalone } 258171253Srwatson } 259157986Sdwmalone } 260157986Sdwmalone if (rule->mbr_subject.mbs_neg & MBS_GID_DEFINED) 261101099Srwatson match = !match; 262101099Srwatson if (!match) 263101099Srwatson return (0); 264101099Srwatson } 265101099Srwatson 266157986Sdwmalone if (rule->mbr_subject.mbs_flags & MBS_PRISON_DEFINED) { 267157986Sdwmalone match = (cred->cr_prison != NULL && 268157986Sdwmalone cred->cr_prison->pr_id == rule->mbr_subject.mbs_prison); 269157986Sdwmalone if (rule->mbr_subject.mbs_neg & MBS_PRISON_DEFINED) 270157986Sdwmalone match = !match; 271157986Sdwmalone if (!match) 272157986Sdwmalone return (0); 273157986Sdwmalone } 274157986Sdwmalone 275101099Srwatson /* 276101099Srwatson * Is there an object match? 277101099Srwatson */ 278157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_UID_DEFINED) { 279157986Sdwmalone match = (vap->va_uid <= rule->mbr_object.mbo_uid_max && 280157986Sdwmalone vap->va_uid >= rule->mbr_object.mbo_uid_min); 281157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_UID_DEFINED) 282101099Srwatson match = !match; 283101099Srwatson if (!match) 284101099Srwatson return (0); 285101099Srwatson } 286101099Srwatson 287157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_GID_DEFINED) { 288157986Sdwmalone match = (vap->va_gid <= rule->mbr_object.mbo_gid_max && 289157986Sdwmalone vap->va_gid >= rule->mbr_object.mbo_gid_min); 290157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_GID_DEFINED) 291101099Srwatson match = !match; 292101099Srwatson if (!match) 293101099Srwatson return (0); 294101099Srwatson } 295101099Srwatson 296157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_FSID_DEFINED) { 297157986Sdwmalone match = (bcmp(&(vp->v_mount->mnt_stat.f_fsid), 298157986Sdwmalone &(rule->mbr_object.mbo_fsid), 299157986Sdwmalone sizeof(rule->mbr_object.mbo_fsid)) == 0); 300157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_FSID_DEFINED) 301157986Sdwmalone match = !match; 302157986Sdwmalone if (!match) 303171253Srwatson return (0); 304157986Sdwmalone } 305157986Sdwmalone 306157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_SUID) { 307157986Sdwmalone match = (vap->va_mode & VSUID); 308157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_SUID) 309157986Sdwmalone match = !match; 310157986Sdwmalone if (!match) 311171253Srwatson return (0); 312157986Sdwmalone } 313157986Sdwmalone 314157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_SGID) { 315157986Sdwmalone match = (vap->va_mode & VSGID); 316157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_SGID) 317157986Sdwmalone match = !match; 318157986Sdwmalone if (!match) 319171253Srwatson return (0); 320157986Sdwmalone } 321157986Sdwmalone 322157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_UID_SUBJECT) { 323157986Sdwmalone match = (vap->va_uid == cred->cr_uid || 324157986Sdwmalone vap->va_uid == cred->cr_ruid || 325157986Sdwmalone vap->va_uid == cred->cr_svuid); 326157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_UID_SUBJECT) 327157986Sdwmalone match = !match; 328157986Sdwmalone if (!match) 329171253Srwatson return (0); 330157986Sdwmalone } 331157986Sdwmalone 332157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_GID_SUBJECT) { 333157986Sdwmalone match = (groupmember(vap->va_gid, cred) || 334157986Sdwmalone vap->va_gid == cred->cr_rgid || 335157986Sdwmalone vap->va_gid == cred->cr_svgid); 336157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_GID_SUBJECT) 337157986Sdwmalone match = !match; 338157986Sdwmalone if (!match) 339171253Srwatson return (0); 340157986Sdwmalone } 341157986Sdwmalone 342157986Sdwmalone if (rule->mbr_object.mbo_flags & MBO_TYPE_DEFINED) { 343157986Sdwmalone switch (vap->va_type) { 344157986Sdwmalone case VREG: 345157986Sdwmalone match = (rule->mbr_object.mbo_type & MBO_TYPE_REG); 346157986Sdwmalone break; 347157986Sdwmalone case VDIR: 348157986Sdwmalone match = (rule->mbr_object.mbo_type & MBO_TYPE_DIR); 349157986Sdwmalone break; 350157986Sdwmalone case VBLK: 351157986Sdwmalone match = (rule->mbr_object.mbo_type & MBO_TYPE_BLK); 352157986Sdwmalone break; 353157986Sdwmalone case VCHR: 354157986Sdwmalone match = (rule->mbr_object.mbo_type & MBO_TYPE_CHR); 355157986Sdwmalone break; 356157986Sdwmalone case VLNK: 357157986Sdwmalone match = (rule->mbr_object.mbo_type & MBO_TYPE_LNK); 358157986Sdwmalone break; 359157986Sdwmalone case VSOCK: 360157986Sdwmalone match = (rule->mbr_object.mbo_type & MBO_TYPE_SOCK); 361157986Sdwmalone break; 362157986Sdwmalone case VFIFO: 363157986Sdwmalone match = (rule->mbr_object.mbo_type & MBO_TYPE_FIFO); 364157986Sdwmalone break; 365157986Sdwmalone default: 366157986Sdwmalone match = 0; 367157986Sdwmalone } 368157986Sdwmalone if (rule->mbr_object.mbo_neg & MBO_TYPE_DEFINED) 369157986Sdwmalone match = !match; 370157986Sdwmalone if (!match) 371171253Srwatson return (0); 372157986Sdwmalone } 373157986Sdwmalone 374101099Srwatson /* 375101099Srwatson * Is the access permitted? 376101099Srwatson */ 377101099Srwatson if ((rule->mbr_mode & acc_mode) != acc_mode) { 378134132Strhodes if (mac_bsdextended_logging) 379134132Strhodes log(LOG_AUTHPRIV, "mac_bsdextended: %d:%d request %d" 380134132Strhodes " on %d:%d failed. \n", cred->cr_ruid, 381171253Srwatson cred->cr_rgid, acc_mode, vap->va_uid, 382171253Srwatson vap->va_gid); 383171253Srwatson return (EACCES); 384101099Srwatson } 385145412Strhodes 386134131Strhodes /* 387145412Strhodes * If the rule matched, permits access, and first match is enabled, 388145412Strhodes * return success. 389134131Strhodes */ 390134131Strhodes if (mac_bsdextended_firstmatch_enabled) 391134131Strhodes return (EJUSTRETURN); 392134131Strhodes else 393171253Srwatson return (0); 394101099Srwatson} 395101099Srwatson 396101099Srwatsonstatic int 397157986Sdwmalonemac_bsdextended_check(struct ucred *cred, struct vnode *vp, struct vattr *vap, 398106212Srwatson int acc_mode) 399101099Srwatson{ 400101099Srwatson int error, i; 401101099Srwatson 402164033Srwatson /* 403171253Srwatson * XXXRW: More specific privilege selection needed. 404164033Srwatson */ 405132563Srwatson if (suser_cred(cred, 0) == 0) 406132563Srwatson return (0); 407132563Srwatson 408166843Srwatson /* 409166843Srwatson * Since we do not separately handle append, map append to write. 410166843Srwatson */ 411166843Srwatson if (acc_mode & MBI_APPEND) { 412166843Srwatson acc_mode &= ~MBI_APPEND; 413166843Srwatson acc_mode |= MBI_WRITE; 414166843Srwatson } 415145412Strhodes mtx_lock(&mac_bsdextended_mtx); 416101099Srwatson for (i = 0; i < rule_slots; i++) { 417101099Srwatson if (rules[i] == NULL) 418101099Srwatson continue; 419157986Sdwmalone error = mac_bsdextended_rulecheck(rules[i], cred, 420157986Sdwmalone vp, vap, acc_mode); 421134131Strhodes if (error == EJUSTRETURN) 422134131Strhodes break; 423145412Strhodes if (error) { 424145412Strhodes mtx_unlock(&mac_bsdextended_mtx); 425101099Srwatson return (error); 426145412Strhodes } 427101099Srwatson } 428145412Strhodes mtx_unlock(&mac_bsdextended_mtx); 429101099Srwatson return (0); 430101099Srwatson} 431101099Srwatson 432101099Srwatsonstatic int 433156300Sdwmalonemac_bsdextended_check_vp(struct ucred *cred, struct vnode *vp, int acc_mode) 434112575Srwatson{ 435156300Sdwmalone int error; 436112575Srwatson struct vattr vap; 437112575Srwatson 438112575Srwatson if (!mac_bsdextended_enabled) 439112575Srwatson return (0); 440112575Srwatson error = VOP_GETATTR(vp, &vap, cred, curthread); 441112575Srwatson if (error) 442112575Srwatson return (error); 443157986Sdwmalone return (mac_bsdextended_check(cred, vp, &vap, acc_mode)); 444112575Srwatson} 445112575Srwatson 446112575Srwatsonstatic int 447172930Srwatsonmac_bsdextended_system_check_acct(struct ucred *cred, struct vnode *vp, 448168976Srwatson struct label *vplabel) 449168933Srwatson{ 450168933Srwatson 451168933Srwatson return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 452168933Srwatson} 453168933Srwatson 454168933Srwatsonstatic int 455172930Srwatsonmac_bsdextended_system_check_auditctl(struct ucred *cred, struct vnode *vp, 456168976Srwatson struct label *vplabel) 457168933Srwatson{ 458168933Srwatson 459168933Srwatson return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 460168933Srwatson} 461168933Srwatson 462168933Srwatsonstatic int 463172930Srwatsonmac_bsdextended_system_check_swapoff(struct ucred *cred, struct vnode *vp, 464168976Srwatson struct label *vplabel) 465168933Srwatson{ 466168933Srwatson 467168933Srwatson return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 468168933Srwatson} 469168933Srwatson 470168933Srwatsonstatic int 471172930Srwatsonmac_bsdextended_system_check_swapon(struct ucred *cred, struct vnode *vp, 472168976Srwatson struct label *vplabel) 473156300Sdwmalone{ 474156300Sdwmalone 475156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 476156300Sdwmalone} 477156300Sdwmalone 478156300Sdwmalonestatic int 479172930Srwatsonmac_bsdextended_vnode_check_access(struct ucred *cred, struct vnode *vp, 480168976Srwatson struct label *vplabel, int acc_mode) 481101099Srwatson{ 482101099Srwatson 483156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, acc_mode)); 484101099Srwatson} 485101099Srwatson 486101099Srwatsonstatic int 487172930Srwatsonmac_bsdextended_vnode_check_chdir(struct ucred *cred, struct vnode *dvp, 488168976Srwatson struct label *dvplabel) 489101099Srwatson{ 490101099Srwatson 491156300Sdwmalone return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 492101099Srwatson} 493101099Srwatson 494101099Srwatsonstatic int 495172930Srwatsonmac_bsdextended_vnode_check_chroot(struct ucred *cred, struct vnode *dvp, 496168976Srwatson struct label *dvplabel) 497101099Srwatson{ 498101099Srwatson 499156300Sdwmalone return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 500101099Srwatson} 501101099Srwatson 502101099Srwatsonstatic int 503101099Srwatsonmac_bsdextended_check_create_vnode(struct ucred *cred, struct vnode *dvp, 504168976Srwatson struct label *dvplabel, struct componentname *cnp, struct vattr *vap) 505101099Srwatson{ 506101099Srwatson 507156300Sdwmalone return (mac_bsdextended_check_vp(cred, dvp, MBI_WRITE)); 508101099Srwatson} 509101099Srwatson 510101099Srwatsonstatic int 511172930Srwatsonmac_bsdextended_vnode_check_deleteacl(struct ucred *cred, struct vnode *vp, 512168976Srwatson struct label *vplabel, acl_type_t type) 513101099Srwatson{ 514101099Srwatson 515156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 516101099Srwatson} 517101099Srwatson 518101099Srwatsonstatic int 519172930Srwatsonmac_bsdextended_vnode_check_deleteextattr(struct ucred *cred, 520168976Srwatson struct vnode *vp, struct label *vplabel, int attrnamespace, 521168976Srwatson const char *name) 522119202Srwatson{ 523119202Srwatson 524156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 525119202Srwatson} 526119202Srwatson 527119202Srwatsonstatic int 528172930Srwatsonmac_bsdextended_vnode_check_exec(struct ucred *cred, struct vnode *vp, 529168976Srwatson struct label *vplabel, struct image_params *imgp, 530106648Srwatson struct label *execlabel) 531101099Srwatson{ 532101099Srwatson 533156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_READ|MBI_EXEC)); 534101099Srwatson} 535101099Srwatson 536101099Srwatsonstatic int 537172930Srwatsonmac_bsdextended_vnode_check_getacl(struct ucred *cred, struct vnode *vp, 538168976Srwatson struct label *vplabel, acl_type_t type) 539101099Srwatson{ 540101099Srwatson 541156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_STAT)); 542101099Srwatson} 543101099Srwatson 544101099Srwatsonstatic int 545172930Srwatsonmac_bsdextended_vnode_check_getextattr(struct ucred *cred, struct vnode *vp, 546168976Srwatson struct label *vplabel, int attrnamespace, const char *name, 547168976Srwatson struct uio *uio) 548101099Srwatson{ 549101099Srwatson 550156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 551101099Srwatson} 552101099Srwatson 553101099Srwatsonstatic int 554172930Srwatsonmac_bsdextended_vnode_check_link(struct ucred *cred, struct vnode *dvp, 555168976Srwatson struct label *dvplabel, struct vnode *vp, struct label *label, 556104530Srwatson struct componentname *cnp) 557104530Srwatson{ 558104530Srwatson int error; 559104530Srwatson 560156300Sdwmalone error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 561104530Srwatson if (error) 562104530Srwatson return (error); 563156300Sdwmalone error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 564104530Srwatson if (error) 565104530Srwatson return (error); 566104530Srwatson return (0); 567104530Srwatson} 568104530Srwatson 569104530Srwatsonstatic int 570172930Srwatsonmac_bsdextended_vnode_check_listextattr(struct ucred *cred, struct vnode *vp, 571168976Srwatson struct label *vplabel, int attrnamespace) 572119202Srwatson{ 573119202Srwatson 574156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 575119202Srwatson} 576119202Srwatson 577119202Srwatsonstatic int 578172930Srwatsonmac_bsdextended_vnode_check_lookup(struct ucred *cred, struct vnode *dvp, 579168976Srwatson struct label *dvplabel, struct componentname *cnp) 580101099Srwatson{ 581117247Srwatson 582156300Sdwmalone return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 583101099Srwatson} 584101099Srwatson 585101099Srwatsonstatic int 586172930Srwatsonmac_bsdextended_vnode_check_open(struct ucred *cred, struct vnode *vp, 587168976Srwatson struct label *vplabel, int acc_mode) 588101099Srwatson{ 589101099Srwatson 590156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, acc_mode)); 591101099Srwatson} 592101099Srwatson 593101099Srwatsonstatic int 594172930Srwatsonmac_bsdextended_vnode_check_readdir(struct ucred *cred, struct vnode *dvp, 595168976Srwatson struct label *dvplabel) 596101099Srwatson{ 597101099Srwatson 598156300Sdwmalone return (mac_bsdextended_check_vp(cred, dvp, MBI_READ)); 599101099Srwatson} 600101099Srwatson 601101099Srwatsonstatic int 602172930Srwatsonmac_bsdextended_vnode_check_readdlink(struct ucred *cred, struct vnode *vp, 603168976Srwatson struct label *vplabel) 604101099Srwatson{ 605101099Srwatson 606156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 607101099Srwatson} 608101099Srwatson 609101099Srwatsonstatic int 610172930Srwatsonmac_bsdextended_vnode_check_rename_from(struct ucred *cred, struct vnode *dvp, 611168976Srwatson struct label *dvplabel, struct vnode *vp, struct label *vplabel, 612101099Srwatson struct componentname *cnp) 613101099Srwatson{ 614101099Srwatson int error; 615101099Srwatson 616156300Sdwmalone error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 617101099Srwatson if (error) 618101099Srwatson return (error); 619171253Srwatson return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 620101099Srwatson} 621101099Srwatson 622101099Srwatsonstatic int 623172930Srwatsonmac_bsdextended_vnode_check_rename_to(struct ucred *cred, struct vnode *dvp, 624168976Srwatson struct label *dvplabel, struct vnode *vp, struct label *vplabel, 625168976Srwatson int samedir, struct componentname *cnp) 626101099Srwatson{ 627101099Srwatson int error; 628101099Srwatson 629156300Sdwmalone error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 630101099Srwatson if (error) 631101099Srwatson return (error); 632156300Sdwmalone if (vp != NULL) 633156300Sdwmalone error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 634101099Srwatson return (error); 635101099Srwatson} 636101099Srwatson 637101099Srwatsonstatic int 638172930Srwatsonmac_bsdextended_vnode_check_revoke(struct ucred *cred, struct vnode *vp, 639168976Srwatson struct label *vplabel) 640101099Srwatson{ 641101099Srwatson 642156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 643101099Srwatson} 644101099Srwatson 645101099Srwatsonstatic int 646101099Srwatsonmac_bsdextended_check_setacl_vnode(struct ucred *cred, struct vnode *vp, 647168976Srwatson struct label *vplabel, acl_type_t type, struct acl *acl) 648101099Srwatson{ 649101099Srwatson 650156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 651101099Srwatson} 652101099Srwatson 653101099Srwatsonstatic int 654172930Srwatsonmac_bsdextended_vnode_check_setextattr(struct ucred *cred, struct vnode *vp, 655168976Srwatson struct label *vplabel, int attrnamespace, const char *name, 656168976Srwatson struct uio *uio) 657101099Srwatson{ 658101099Srwatson 659156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 660101099Srwatson} 661101099Srwatson 662101099Srwatsonstatic int 663172930Srwatsonmac_bsdextended_vnode_check_setflags(struct ucred *cred, struct vnode *vp, 664168976Srwatson struct label *vplabel, u_long flags) 665101099Srwatson{ 666101099Srwatson 667156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 668101099Srwatson} 669101099Srwatson 670101099Srwatsonstatic int 671172930Srwatsonmac_bsdextended_vnode_check_setmode(struct ucred *cred, struct vnode *vp, 672168976Srwatson struct label *vplabel, mode_t mode) 673101099Srwatson{ 674101099Srwatson 675156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 676101099Srwatson} 677101099Srwatson 678101099Srwatsonstatic int 679172930Srwatsonmac_bsdextended_vnode_check_setowner(struct ucred *cred, struct vnode *vp, 680168976Srwatson struct label *vplabel, uid_t uid, gid_t gid) 681101099Srwatson{ 682101099Srwatson 683156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 684101099Srwatson} 685101099Srwatson 686101099Srwatsonstatic int 687172930Srwatsonmac_bsdextended_vnode_check_setutimes(struct ucred *cred, struct vnode *vp, 688168976Srwatson struct label *vplabel, struct timespec atime, struct timespec utime) 689101099Srwatson{ 690101099Srwatson 691156300Sdwmalone return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 692101099Srwatson} 693101099Srwatson 694101099Srwatsonstatic int 695172930Srwatsonmac_bsdextended_vnode_check_stat(struct ucred *active_cred, 696168976Srwatson struct ucred *file_cred, struct vnode *vp, struct label *vplabel) 697101099Srwatson{ 698101099Srwatson 699156300Sdwmalone return (mac_bsdextended_check_vp(active_cred, vp, MBI_STAT)); 700101099Srwatson} 701101099Srwatson 702172107Srwatsonstatic int 703172930Srwatsonmac_bsdextended_vnode_check_unlink(struct ucred *cred, struct vnode *dvp, 704172107Srwatson struct label *dvplabel, struct vnode *vp, struct label *vplabel, 705172107Srwatson struct componentname *cnp) 706172107Srwatson{ 707172107Srwatson int error; 708172107Srwatson 709172107Srwatson error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 710172107Srwatson if (error) 711172107Srwatson return (error); 712172107Srwatson return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 713172107Srwatson} 714172107Srwatson 715106217Srwatsonstatic struct mac_policy_ops mac_bsdextended_ops = 716101099Srwatson{ 717106217Srwatson .mpo_destroy = mac_bsdextended_destroy, 718106217Srwatson .mpo_init = mac_bsdextended_init, 719172930Srwatson .mpo_system_check_acct = mac_bsdextended_system_check_acct, 720172930Srwatson .mpo_system_check_auditctl = mac_bsdextended_system_check_auditctl, 721172930Srwatson .mpo_system_check_swapoff = mac_bsdextended_system_check_swapoff, 722172930Srwatson .mpo_system_check_swapon = mac_bsdextended_system_check_swapon, 723172930Srwatson .mpo_vnode_check_access = mac_bsdextended_vnode_check_access, 724172930Srwatson .mpo_vnode_check_chdir = mac_bsdextended_vnode_check_chdir, 725172930Srwatson .mpo_vnode_check_chroot = mac_bsdextended_vnode_check_chroot, 726172930Srwatson .mpo_vnode_check_create = mac_bsdextended_check_create_vnode, 727172930Srwatson .mpo_vnode_check_deleteacl = mac_bsdextended_vnode_check_deleteacl, 728172930Srwatson .mpo_vnode_check_deleteextattr = mac_bsdextended_vnode_check_deleteextattr, 729172930Srwatson .mpo_vnode_check_exec = mac_bsdextended_vnode_check_exec, 730172930Srwatson .mpo_vnode_check_getacl = mac_bsdextended_vnode_check_getacl, 731172930Srwatson .mpo_vnode_check_getextattr = mac_bsdextended_vnode_check_getextattr, 732172930Srwatson .mpo_vnode_check_link = mac_bsdextended_vnode_check_link, 733172930Srwatson .mpo_vnode_check_listextattr = mac_bsdextended_vnode_check_listextattr, 734172930Srwatson .mpo_vnode_check_lookup = mac_bsdextended_vnode_check_lookup, 735172930Srwatson .mpo_vnode_check_open = mac_bsdextended_vnode_check_open, 736172930Srwatson .mpo_vnode_check_readdir = mac_bsdextended_vnode_check_readdir, 737172930Srwatson .mpo_vnode_check_readlink = mac_bsdextended_vnode_check_readdlink, 738172930Srwatson .mpo_vnode_check_rename_from = mac_bsdextended_vnode_check_rename_from, 739172930Srwatson .mpo_vnode_check_rename_to = mac_bsdextended_vnode_check_rename_to, 740172930Srwatson .mpo_vnode_check_revoke = mac_bsdextended_vnode_check_revoke, 741172930Srwatson .mpo_vnode_check_setacl = mac_bsdextended_check_setacl_vnode, 742172930Srwatson .mpo_vnode_check_setextattr = mac_bsdextended_vnode_check_setextattr, 743172930Srwatson .mpo_vnode_check_setflags = mac_bsdextended_vnode_check_setflags, 744172930Srwatson .mpo_vnode_check_setmode = mac_bsdextended_vnode_check_setmode, 745172930Srwatson .mpo_vnode_check_setowner = mac_bsdextended_vnode_check_setowner, 746172930Srwatson .mpo_vnode_check_setutimes = mac_bsdextended_vnode_check_setutimes, 747172930Srwatson .mpo_vnode_check_stat = mac_bsdextended_vnode_check_stat, 748172930Srwatson .mpo_vnode_check_unlink = mac_bsdextended_vnode_check_unlink, 749101099Srwatson}; 750101099Srwatson 751112717SrwatsonMAC_POLICY_SET(&mac_bsdextended_ops, mac_bsdextended, 752101099Srwatson "TrustedBSD MAC/BSD Extended", MPC_LOADTIME_FLAG_UNLOADOK, NULL); 753