/*- * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson * Copyright (c) 2001, 2002, 2003 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed by Robert Watson for the TrustedBSD Project. * * This software was developed for the FreeBSD Project in part by NAI Labs, * the Security Research Division of Network Associates, Inc. under * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA * CHATS research program. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * Developed by the TrustedBSD Project. * Low-watermark floating label mandatory integrity policy. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct mac_lomac_proc { struct mac_lomac mac_lomac; struct mtx mtx; }; SYSCTL_DECL(_security_mac); SYSCTL_NODE(_security_mac, OID_AUTO, lomac, CTLFLAG_RW, 0, "TrustedBSD mac_lomac policy controls"); static int mac_lomac_label_size = sizeof(struct mac_lomac); SYSCTL_INT(_security_mac_lomac, OID_AUTO, label_size, CTLFLAG_RD, &mac_lomac_label_size, 0, "Size of struct mac_lomac"); static int mac_lomac_enabled = 1; SYSCTL_INT(_security_mac_lomac, OID_AUTO, enabled, CTLFLAG_RW, &mac_lomac_enabled, 0, "Enforce MAC/LOMAC policy"); TUNABLE_INT("security.mac.lomac.enabled", &mac_lomac_enabled); static int destroyed_not_inited; SYSCTL_INT(_security_mac_lomac, OID_AUTO, destroyed_not_inited, CTLFLAG_RD, &destroyed_not_inited, 0, "Count of labels destroyed but not inited"); static int trust_all_interfaces = 0; SYSCTL_INT(_security_mac_lomac, OID_AUTO, trust_all_interfaces, CTLFLAG_RD, &trust_all_interfaces, 0, "Consider all interfaces 'trusted' by MAC/LOMAC"); TUNABLE_INT("security.mac.lomac.trust_all_interfaces", &trust_all_interfaces); static char trusted_interfaces[128]; SYSCTL_STRING(_security_mac_lomac, OID_AUTO, trusted_interfaces, CTLFLAG_RD, trusted_interfaces, 0, "Interfaces considered 'trusted' by MAC/LOMAC"); TUNABLE_STR("security.mac.lomac.trusted_interfaces", trusted_interfaces, sizeof(trusted_interfaces)); static int ptys_equal = 0; SYSCTL_INT(_security_mac_lomac, OID_AUTO, ptys_equal, CTLFLAG_RW, &ptys_equal, 0, "Label pty devices as lomac/equal on create"); TUNABLE_INT("security.mac.lomac.ptys_equal", &ptys_equal); static int revocation_enabled = 1; SYSCTL_INT(_security_mac_lomac, OID_AUTO, revocation_enabled, CTLFLAG_RW, &revocation_enabled, 0, "Revoke access to objects on relabel"); TUNABLE_INT("security.mac.lomac.revocation_enabled", &revocation_enabled); static int mac_lomac_slot; #define SLOT(l) ((struct mac_lomac *)LABEL_TO_SLOT((l), mac_lomac_slot).l_ptr) #define PSLOT(l) ((struct mac_lomac_proc *) \ LABEL_TO_SLOT((l), mac_lomac_slot).l_ptr) MALLOC_DEFINE(M_MACLOMAC, "lomac label", "MAC/LOMAC labels"); static struct mac_lomac * lomac_alloc(int flag) { struct mac_lomac *mac_lomac; mac_lomac = malloc(sizeof(struct mac_lomac), M_MACLOMAC, M_ZERO | flag); return (mac_lomac); } static void lomac_free(struct mac_lomac *mac_lomac) { if (mac_lomac != NULL) free(mac_lomac, M_MACLOMAC); else atomic_add_int(&destroyed_not_inited, 1); } static int lomac_atmostflags(struct mac_lomac *mac_lomac, int flags) { if ((mac_lomac->ml_flags & flags) != mac_lomac->ml_flags) return (EINVAL); return (0); } static int mac_lomac_dominate_element(struct mac_lomac_element *a, struct mac_lomac_element *b) { switch (a->mle_type) { case MAC_LOMAC_TYPE_EQUAL: case MAC_LOMAC_TYPE_HIGH: return (1); case MAC_LOMAC_TYPE_LOW: switch (b->mle_type) { case MAC_LOMAC_TYPE_GRADE: case MAC_LOMAC_TYPE_HIGH: return (0); case MAC_LOMAC_TYPE_EQUAL: case MAC_LOMAC_TYPE_LOW: return (1); default: panic("mac_lomac_dominate_element: b->mle_type invalid"); } case MAC_LOMAC_TYPE_GRADE: switch (b->mle_type) { case MAC_LOMAC_TYPE_EQUAL: case MAC_LOMAC_TYPE_LOW: return (1); case MAC_LOMAC_TYPE_HIGH: return (0); case MAC_LOMAC_TYPE_GRADE: return (a->mle_grade >= b->mle_grade); default: panic("mac_lomac_dominate_element: b->mle_type invalid"); } default: panic("mac_lomac_dominate_element: a->mle_type invalid"); } } static int mac_lomac_range_in_range(struct mac_lomac *rangea, struct mac_lomac *rangeb) { return (mac_lomac_dominate_element(&rangeb->ml_rangehigh, &rangea->ml_rangehigh) && mac_lomac_dominate_element(&rangea->ml_rangelow, &rangeb->ml_rangelow)); } static int mac_lomac_single_in_range(struct mac_lomac *single, struct mac_lomac *range) { KASSERT((single->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_single_in_range: a not single")); KASSERT((range->ml_flags & MAC_LOMAC_FLAG_RANGE) != 0, ("mac_lomac_single_in_range: b not range")); return (mac_lomac_dominate_element(&range->ml_rangehigh, &single->ml_single) && mac_lomac_dominate_element(&single->ml_single, &range->ml_rangelow)); } static int mac_lomac_auxsingle_in_range(struct mac_lomac *single, struct mac_lomac *range) { KASSERT((single->ml_flags & MAC_LOMAC_FLAG_AUX) != 0, ("mac_lomac_single_in_range: a not auxsingle")); KASSERT((range->ml_flags & MAC_LOMAC_FLAG_RANGE) != 0, ("mac_lomac_single_in_range: b not range")); return (mac_lomac_dominate_element(&range->ml_rangehigh, &single->ml_auxsingle) && mac_lomac_dominate_element(&single->ml_auxsingle, &range->ml_rangelow)); } static int mac_lomac_dominate_single(struct mac_lomac *a, struct mac_lomac *b) { KASSERT((a->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_dominate_single: a not single")); KASSERT((b->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_dominate_single: b not single")); return (mac_lomac_dominate_element(&a->ml_single, &b->ml_single)); } static int mac_lomac_subject_dominate(struct mac_lomac *a, struct mac_lomac *b) { KASSERT((~a->ml_flags & (MAC_LOMAC_FLAG_SINGLE | MAC_LOMAC_FLAG_RANGE)) == 0, ("mac_lomac_dominate_single: a not subject")); KASSERT((b->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_dominate_single: b not single")); return (mac_lomac_dominate_element(&a->ml_rangehigh, &b->ml_single)); } static int mac_lomac_equal_element(struct mac_lomac_element *a, struct mac_lomac_element *b) { if (a->mle_type == MAC_LOMAC_TYPE_EQUAL || b->mle_type == MAC_LOMAC_TYPE_EQUAL) return (1); return (a->mle_type == b->mle_type && a->mle_grade == b->mle_grade); } static int mac_lomac_equal_single(struct mac_lomac *a, struct mac_lomac *b) { KASSERT((a->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_equal_single: a not single")); KASSERT((b->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_equal_single: b not single")); return (mac_lomac_equal_element(&a->ml_single, &b->ml_single)); } static int mac_lomac_contains_equal(struct mac_lomac *mac_lomac) { if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_SINGLE) if (mac_lomac->ml_single.mle_type == MAC_LOMAC_TYPE_EQUAL) return (1); if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_AUX) if (mac_lomac->ml_auxsingle.mle_type == MAC_LOMAC_TYPE_EQUAL) return (1); if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_RANGE) { if (mac_lomac->ml_rangelow.mle_type == MAC_LOMAC_TYPE_EQUAL) return (1); if (mac_lomac->ml_rangehigh.mle_type == MAC_LOMAC_TYPE_EQUAL) return (1); } return (0); } static int mac_lomac_subject_privileged(struct mac_lomac *mac_lomac) { KASSERT((mac_lomac->ml_flags & MAC_LOMAC_FLAGS_BOTH) == MAC_LOMAC_FLAGS_BOTH, ("mac_lomac_subject_privileged: subject doesn't have both labels")); /* If the single is EQUAL, it's ok. */ if (mac_lomac->ml_single.mle_type == MAC_LOMAC_TYPE_EQUAL) return (0); /* If either range endpoint is EQUAL, it's ok. */ if (mac_lomac->ml_rangelow.mle_type == MAC_LOMAC_TYPE_EQUAL || mac_lomac->ml_rangehigh.mle_type == MAC_LOMAC_TYPE_EQUAL) return (0); /* If the range is low-high, it's ok. */ if (mac_lomac->ml_rangelow.mle_type == MAC_LOMAC_TYPE_LOW && mac_lomac->ml_rangehigh.mle_type == MAC_LOMAC_TYPE_HIGH) return (0); /* It's not ok. */ return (EPERM); } static int mac_lomac_high_single(struct mac_lomac *mac_lomac) { KASSERT((mac_lomac->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_high_single: mac_lomac not single")); return (mac_lomac->ml_single.mle_type == MAC_LOMAC_TYPE_HIGH); } static int mac_lomac_valid(struct mac_lomac *mac_lomac) { if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_SINGLE) { switch (mac_lomac->ml_single.mle_type) { case MAC_LOMAC_TYPE_GRADE: case MAC_LOMAC_TYPE_EQUAL: case MAC_LOMAC_TYPE_HIGH: case MAC_LOMAC_TYPE_LOW: break; default: return (EINVAL); } } else { if (mac_lomac->ml_single.mle_type != MAC_LOMAC_TYPE_UNDEF) return (EINVAL); } if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_AUX) { switch (mac_lomac->ml_auxsingle.mle_type) { case MAC_LOMAC_TYPE_GRADE: case MAC_LOMAC_TYPE_EQUAL: case MAC_LOMAC_TYPE_HIGH: case MAC_LOMAC_TYPE_LOW: break; default: return (EINVAL); } } else { if (mac_lomac->ml_auxsingle.mle_type != MAC_LOMAC_TYPE_UNDEF) return (EINVAL); } if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_RANGE) { switch (mac_lomac->ml_rangelow.mle_type) { case MAC_LOMAC_TYPE_GRADE: case MAC_LOMAC_TYPE_EQUAL: case MAC_LOMAC_TYPE_HIGH: case MAC_LOMAC_TYPE_LOW: break; default: return (EINVAL); } switch (mac_lomac->ml_rangehigh.mle_type) { case MAC_LOMAC_TYPE_GRADE: case MAC_LOMAC_TYPE_EQUAL: case MAC_LOMAC_TYPE_HIGH: case MAC_LOMAC_TYPE_LOW: break; default: return (EINVAL); } if (!mac_lomac_dominate_element(&mac_lomac->ml_rangehigh, &mac_lomac->ml_rangelow)) return (EINVAL); } else { if (mac_lomac->ml_rangelow.mle_type != MAC_LOMAC_TYPE_UNDEF || mac_lomac->ml_rangehigh.mle_type != MAC_LOMAC_TYPE_UNDEF) return (EINVAL); } return (0); } static void mac_lomac_set_range(struct mac_lomac *mac_lomac, u_short typelow, u_short gradelow, u_short typehigh, u_short gradehigh) { mac_lomac->ml_rangelow.mle_type = typelow; mac_lomac->ml_rangelow.mle_grade = gradelow; mac_lomac->ml_rangehigh.mle_type = typehigh; mac_lomac->ml_rangehigh.mle_grade = gradehigh; mac_lomac->ml_flags |= MAC_LOMAC_FLAG_RANGE; } static void mac_lomac_set_single(struct mac_lomac *mac_lomac, u_short type, u_short grade) { mac_lomac->ml_single.mle_type = type; mac_lomac->ml_single.mle_grade = grade; mac_lomac->ml_flags |= MAC_LOMAC_FLAG_SINGLE; } static void mac_lomac_copy_range(struct mac_lomac *labelfrom, struct mac_lomac *labelto) { KASSERT((labelfrom->ml_flags & MAC_LOMAC_FLAG_RANGE) != 0, ("mac_lomac_copy_range: labelfrom not range")); labelto->ml_rangelow = labelfrom->ml_rangelow; labelto->ml_rangehigh = labelfrom->ml_rangehigh; labelto->ml_flags |= MAC_LOMAC_FLAG_RANGE; } static void mac_lomac_copy_single(struct mac_lomac *labelfrom, struct mac_lomac *labelto) { KASSERT((labelfrom->ml_flags & MAC_LOMAC_FLAG_SINGLE) != 0, ("mac_lomac_copy_single: labelfrom not single")); labelto->ml_single = labelfrom->ml_single; labelto->ml_flags |= MAC_LOMAC_FLAG_SINGLE; } static void mac_lomac_copy_auxsingle(struct mac_lomac *labelfrom, struct mac_lomac *labelto) { KASSERT((labelfrom->ml_flags & MAC_LOMAC_FLAG_AUX) != 0, ("mac_lomac_copy_auxsingle: labelfrom not auxsingle")); labelto->ml_auxsingle = labelfrom->ml_auxsingle; labelto->ml_flags |= MAC_LOMAC_FLAG_AUX; } static void mac_lomac_copy(struct mac_lomac *source, struct mac_lomac *dest) { if (source->ml_flags & MAC_LOMAC_FLAG_SINGLE) mac_lomac_copy_single(source, dest); if (source->ml_flags & MAC_LOMAC_FLAG_AUX) mac_lomac_copy_auxsingle(source, dest); if (source->ml_flags & MAC_LOMAC_FLAG_RANGE) mac_lomac_copy_range(source, dest); } static int mac_lomac_to_string(struct sbuf *sb, struct mac_lomac *mac_lomac); static int maybe_demote(struct mac_lomac *subjlabel, struct mac_lomac *objlabel, const char *actionname, const char *objname, struct vnode *vpq) { struct sbuf subjlabel_sb, subjtext_sb, objlabel_sb; char *subjlabeltext, *objlabeltext, *subjtext; struct mac_lomac cached_subjlabel; struct mac_lomac_proc *subj; struct vattr va; struct proc *p; pid_t pgid; subj = PSLOT(curthread->td_proc->p_label); p = curthread->td_proc; mtx_lock(&subj->mtx); if (subj->mac_lomac.ml_flags & MAC_LOMAC_FLAG_UPDATE) { /* * Check to see if the pending demotion would be more or * less severe than this one, and keep the more severe. * This can only happen for a multi-threaded application. */ if (mac_lomac_dominate_single(objlabel, &subj->mac_lomac)) { mtx_unlock(&subj->mtx); return (0); } } bzero(&subj->mac_lomac, sizeof(subj->mac_lomac)); /* * Always demote the single label. */ mac_lomac_copy_single(objlabel, &subj->mac_lomac); /* * Start with the original range, then minimize each side of * the range to the point of not dominating the object. The * high side will always be demoted, of course. */ mac_lomac_copy_range(subjlabel, &subj->mac_lomac); if (!mac_lomac_dominate_element(&objlabel->ml_single, &subj->mac_lomac.ml_rangelow)) subj->mac_lomac.ml_rangelow = objlabel->ml_single; subj->mac_lomac.ml_rangehigh = objlabel->ml_single; subj->mac_lomac.ml_flags |= MAC_LOMAC_FLAG_UPDATE; mtx_lock_spin(&sched_lock); curthread->td_flags |= TDF_ASTPENDING; curthread->td_proc->p_sflag |= PS_MACPEND; mtx_unlock_spin(&sched_lock); /* * Avoid memory allocation while holding a mutex; cache the * label. */ mac_lomac_copy_single(&subj->mac_lomac, &cached_subjlabel); mtx_unlock(&subj->mtx); sbuf_new(&subjlabel_sb, NULL, 0, SBUF_AUTOEXTEND); mac_lomac_to_string(&subjlabel_sb, subjlabel); sbuf_finish(&subjlabel_sb); subjlabeltext = sbuf_data(&subjlabel_sb); sbuf_new(&subjtext_sb, NULL, 0, SBUF_AUTOEXTEND); mac_lomac_to_string(&subjtext_sb, &subj->mac_lomac); sbuf_finish(&subjtext_sb); subjtext = sbuf_data(&subjtext_sb); sbuf_new(&objlabel_sb, NULL, 0, SBUF_AUTOEXTEND); mac_lomac_to_string(&objlabel_sb, objlabel); sbuf_finish(&objlabel_sb); objlabeltext = sbuf_data(&objlabel_sb); pgid = p->p_pgrp->pg_id; /* XXX could be stale? */ if (vpq != NULL && VOP_GETATTR(vpq, &va, curthread->td_ucred, curthread) == 0) { log(LOG_INFO, "LOMAC: level-%s subject p%dg%du%d:%s demoted to" " level %s after %s a level-%s %s (inode=%ld, " "mountpount=%s)\n", subjlabeltext, p->p_pid, pgid, curthread->td_ucred->cr_uid, p->p_comm, subjtext, actionname, objlabeltext, objname, va.va_fileid, vpq->v_mount->mnt_stat.f_mntonname); } else { log(LOG_INFO, "LOMAC: level-%s subject p%dg%du%d:%s demoted to" " level %s after %s a level-%s %s\n", subjlabeltext, p->p_pid, pgid, curthread->td_ucred->cr_uid, p->p_comm, subjtext, actionname, objlabeltext, objname); } sbuf_delete(&subjlabel_sb); sbuf_delete(&subjtext_sb); sbuf_delete(&objlabel_sb); return (0); } /* * Relabel "to" to "from" only if "from" is a valid label (contains * at least a single), as for a relabel operation which may or may * not involve a relevant label. */ static void try_relabel(struct mac_lomac *from, struct mac_lomac *to) { if (from->ml_flags & MAC_LOMAC_FLAG_SINGLE) { bzero(to, sizeof(*to)); mac_lomac_copy(from, to); } } /* * Policy module operations. */ static void mac_lomac_init(struct mac_policy_conf *conf) { } /* * Label operations. */ static void mac_lomac_init_label(struct label *label) { SLOT(label) = lomac_alloc(M_WAITOK); } static int mac_lomac_init_label_waitcheck(struct label *label, int flag) { SLOT(label) = lomac_alloc(flag); if (SLOT(label) == NULL) return (ENOMEM); return (0); } static void mac_lomac_init_proc_label(struct label *label) { PSLOT(label) = malloc(sizeof(struct mac_lomac_proc), M_MACLOMAC, M_ZERO | M_WAITOK); mtx_init(&PSLOT(label)->mtx, "MAC/Lomac proc lock", NULL, MTX_DEF); } static void mac_lomac_destroy_label(struct label *label) { lomac_free(SLOT(label)); SLOT(label) = NULL; } static void mac_lomac_destroy_proc_label(struct label *label) { mtx_destroy(&PSLOT(label)->mtx); FREE(PSLOT(label), M_MACLOMAC); PSLOT(label) = NULL; } static int mac_lomac_element_to_string(struct sbuf *sb, struct mac_lomac_element *element) { switch (element->mle_type) { case MAC_LOMAC_TYPE_HIGH: return (sbuf_printf(sb, "high")); case MAC_LOMAC_TYPE_LOW: return (sbuf_printf(sb, "low")); case MAC_LOMAC_TYPE_EQUAL: return (sbuf_printf(sb, "equal")); case MAC_LOMAC_TYPE_GRADE: return (sbuf_printf(sb, "%d", element->mle_grade)); default: panic("mac_lomac_element_to_string: invalid type (%d)", element->mle_type); } } static int mac_lomac_to_string(struct sbuf *sb, struct mac_lomac *mac_lomac) { if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_SINGLE) { if (mac_lomac_element_to_string(sb, &mac_lomac->ml_single) == -1) return (EINVAL); } if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_AUX) { if (sbuf_putc(sb, '[') == -1) return (EINVAL); if (mac_lomac_element_to_string(sb, &mac_lomac->ml_auxsingle) == -1) return (EINVAL); if (sbuf_putc(sb, ']') == -1) return (EINVAL); } if (mac_lomac->ml_flags & MAC_LOMAC_FLAG_RANGE) { if (sbuf_putc(sb, '(') == -1) return (EINVAL); if (mac_lomac_element_to_string(sb, &mac_lomac->ml_rangelow) == -1) return (EINVAL); if (sbuf_putc(sb, '-') == -1) return (EINVAL); if (mac_lomac_element_to_string(sb, &mac_lomac->ml_rangehigh) == -1) return (EINVAL); if (sbuf_putc(sb, ')') == -1) return (EINVAL); } return (0); } static int mac_lomac_externalize_label(struct label *label, char *element_name, struct sbuf *sb, int *claimed) { struct mac_lomac *mac_lomac; if (strcmp(MAC_LOMAC_LABEL_NAME, element_name) != 0) return (0); (*claimed)++; mac_lomac = SLOT(label); return (mac_lomac_to_string(sb, mac_lomac)); } static int mac_lomac_parse_element(struct mac_lomac_element *element, char *string) { if (strcmp(string, "high") == 0 || strcmp(string, "hi") == 0) { element->mle_type = MAC_LOMAC_TYPE_HIGH; element->mle_grade = MAC_LOMAC_TYPE_UNDEF; } else if (strcmp(string, "low") == 0 || strcmp(string, "lo") == 0) { element->mle_type = MAC_LOMAC_TYPE_LOW; element->mle_grade = MAC_LOMAC_TYPE_UNDEF; } else if (strcmp(string, "equal") == 0 || strcmp(string, "eq") == 0) { element->mle_type = MAC_LOMAC_TYPE_EQUAL; element->mle_grade = MAC_LOMAC_TYPE_UNDEF; } else { char *p0, *p1; int d; p0 = string; d = strtol(p0, &p1, 10); if (d < 0 || d > 65535) return (EINVAL); element->mle_type = MAC_LOMAC_TYPE_GRADE; element->mle_grade = d; if (p1 == p0 || *p1 != '\0') return (EINVAL); } return (0); } /* * Note: destructively consumes the string, make a local copy before * calling if that's a problem. */ static int mac_lomac_parse(struct mac_lomac *mac_lomac, char *string) { char *range, *rangeend, *rangehigh, *rangelow, *single, *auxsingle, *auxsingleend; int error; /* Do we have a range? */ single = string; range = index(string, '('); if (range == single) single = NULL; auxsingle = index(string, '['); if (auxsingle == single) single = NULL; if (range != NULL && auxsingle != NULL) return (EINVAL); rangelow = rangehigh = NULL; if (range != NULL) { /* Nul terminate the end of the single string. */ *range = '\0'; range++; rangelow = range; rangehigh = index(rangelow, '-'); if (rangehigh == NULL) return (EINVAL); rangehigh++; if (*rangelow == '\0' || *rangehigh == '\0') return (EINVAL); rangeend = index(rangehigh, ')'); if (rangeend == NULL) return (EINVAL); if (*(rangeend + 1) != '\0') return (EINVAL); /* Nul terminate the ends of the ranges. */ *(rangehigh - 1) = '\0'; *rangeend = '\0'; } KASSERT((rangelow != NULL && rangehigh != NULL) || (rangelow == NULL && rangehigh == NULL), ("mac_lomac_internalize_label: range mismatch")); if (auxsingle != NULL) { /* Nul terminate the end of the single string. */ *auxsingle = '\0'; auxsingle++; auxsingleend = index(auxsingle, ']'); if (auxsingleend == NULL) return (EINVAL); if (*(auxsingleend + 1) != '\0') return (EINVAL); /* Nul terminate the end of the auxsingle. */ *auxsingleend = '\0'; } bzero(mac_lomac, sizeof(*mac_lomac)); if (single != NULL) { error = mac_lomac_parse_element(&mac_lomac->ml_single, single); if (error) return (error); mac_lomac->ml_flags |= MAC_LOMAC_FLAG_SINGLE; } if (auxsingle != NULL) { error = mac_lomac_parse_element(&mac_lomac->ml_auxsingle, auxsingle); if (error) return (error); mac_lomac->ml_flags |= MAC_LOMAC_FLAG_AUX; } if (rangelow != NULL) { error = mac_lomac_parse_element(&mac_lomac->ml_rangelow, rangelow); if (error) return (error); error = mac_lomac_parse_element(&mac_lomac->ml_rangehigh, rangehigh); if (error) return (error); mac_lomac->ml_flags |= MAC_LOMAC_FLAG_RANGE; } error = mac_lomac_valid(mac_lomac); if (error) return (error); return (0); } static int mac_lomac_internalize_label(struct label *label, char *element_name, char *element_data, int *claimed) { struct mac_lomac *mac_lomac, mac_lomac_temp; int error; if (strcmp(MAC_LOMAC_LABEL_NAME, element_name) != 0) return (0); (*claimed)++; error = mac_lomac_parse(&mac_lomac_temp, element_data); if (error) return (error); mac_lomac = SLOT(label); *mac_lomac = mac_lomac_temp; return (0); } static void mac_lomac_copy_label(struct label *src, struct label *dest) { *SLOT(dest) = *SLOT(src); } /* * Labeling event operations: file system objects, and things that look * a lot like file system objects. */ static void mac_lomac_create_devfs_device(struct mount *mp, dev_t dev, struct devfs_dirent *devfs_dirent, struct label *label) { struct mac_lomac *mac_lomac; int lomac_type; mac_lomac = SLOT(label); if (strcmp(dev->si_name, "null") == 0 || strcmp(dev->si_name, "zero") == 0 || strcmp(dev->si_name, "random") == 0 || strncmp(dev->si_name, "fd/", strlen("fd/")) == 0 || strncmp(dev->si_name, "ttyv", strlen("ttyv")) == 0) lomac_type = MAC_LOMAC_TYPE_EQUAL; else if (ptys_equal && (strncmp(dev->si_name, "ttyp", strlen("ttyp")) == 0 || strncmp(dev->si_name, "ptyp", strlen("ptyp")) == 0)) lomac_type = MAC_LOMAC_TYPE_EQUAL; else lomac_type = MAC_LOMAC_TYPE_HIGH; mac_lomac_set_single(mac_lomac, lomac_type, 0); } static void mac_lomac_create_devfs_directory(struct mount *mp, char *dirname, int dirnamelen, struct devfs_dirent *devfs_dirent, struct label *label) { struct mac_lomac *mac_lomac; mac_lomac = SLOT(label); mac_lomac_set_single(mac_lomac, MAC_LOMAC_TYPE_HIGH, 0); } static void mac_lomac_create_devfs_symlink(struct ucred *cred, struct mount *mp, struct devfs_dirent *dd, struct label *ddlabel, struct devfs_dirent *de, struct label *delabel) { struct mac_lomac *source, *dest; source = SLOT(cred->cr_label); dest = SLOT(delabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_mount(struct ucred *cred, struct mount *mp, struct label *mntlabel, struct label *fslabel) { struct mac_lomac *source, *dest; source = SLOT(cred->cr_label); dest = SLOT(mntlabel); mac_lomac_copy_single(source, dest); dest = SLOT(fslabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_root_mount(struct ucred *cred, struct mount *mp, struct label *mntlabel, struct label *fslabel) { struct mac_lomac *mac_lomac; /* Always mount root as high integrity. */ mac_lomac = SLOT(fslabel); mac_lomac_set_single(mac_lomac, MAC_LOMAC_TYPE_HIGH, 0); mac_lomac = SLOT(mntlabel); mac_lomac_set_single(mac_lomac, MAC_LOMAC_TYPE_HIGH, 0); } static void mac_lomac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, struct label *label) { struct mac_lomac *source, *dest; source = SLOT(label); dest = SLOT(vnodelabel); try_relabel(source, dest); } static void mac_lomac_update_devfsdirent(struct mount *mp, struct devfs_dirent *devfs_dirent, struct label *direntlabel, struct vnode *vp, struct label *vnodelabel) { struct mac_lomac *source, *dest; source = SLOT(vnodelabel); dest = SLOT(direntlabel); mac_lomac_copy(source, dest); } static void mac_lomac_associate_vnode_devfs(struct mount *mp, struct label *fslabel, struct devfs_dirent *de, struct label *delabel, struct vnode *vp, struct label *vlabel) { struct mac_lomac *source, *dest; source = SLOT(delabel); dest = SLOT(vlabel); mac_lomac_copy_single(source, dest); } static int mac_lomac_associate_vnode_extattr(struct mount *mp, struct label *fslabel, struct vnode *vp, struct label *vlabel) { struct mac_lomac temp, *source, *dest; int buflen, error; source = SLOT(fslabel); dest = SLOT(vlabel); buflen = sizeof(temp); bzero(&temp, buflen); error = vn_extattr_get(vp, IO_NODELOCKED, MAC_LOMAC_EXTATTR_NAMESPACE, MAC_LOMAC_EXTATTR_NAME, &buflen, (char *)&temp, curthread); if (error == ENOATTR || error == EOPNOTSUPP) { /* Fall back to the fslabel. */ mac_lomac_copy_single(source, dest); return (0); } else if (error) return (error); if (buflen != sizeof(temp)) { if (buflen != sizeof(temp) - sizeof(temp.ml_auxsingle)) { printf("mac_lomac_associate_vnode_extattr: bad size %d\n", buflen); return (EPERM); } bzero(&temp.ml_auxsingle, sizeof(temp.ml_auxsingle)); buflen = sizeof(temp); (void)vn_extattr_set(vp, IO_NODELOCKED, MAC_LOMAC_EXTATTR_NAMESPACE, MAC_LOMAC_EXTATTR_NAME, buflen, (char *)&temp, curthread); } if (mac_lomac_valid(&temp) != 0) { printf("mac_lomac_associate_vnode_extattr: invalid\n"); return (EPERM); } if ((temp.ml_flags & MAC_LOMAC_FLAGS_BOTH) != MAC_LOMAC_FLAG_SINGLE) { printf("mac_lomac_associate_vnode_extattr: not single\n"); return (EPERM); } mac_lomac_copy_single(&temp, dest); return (0); } static void mac_lomac_associate_vnode_singlelabel(struct mount *mp, struct label *fslabel, struct vnode *vp, struct label *vlabel) { struct mac_lomac *source, *dest; source = SLOT(fslabel); dest = SLOT(vlabel); mac_lomac_copy_single(source, dest); } static int mac_lomac_create_vnode_extattr(struct ucred *cred, struct mount *mp, struct label *fslabel, struct vnode *dvp, struct label *dlabel, struct vnode *vp, struct label *vlabel, struct componentname *cnp) { struct mac_lomac *source, *dest, *dir, temp; size_t buflen; int error; buflen = sizeof(temp); bzero(&temp, buflen); source = SLOT(cred->cr_label); dest = SLOT(vlabel); dir = SLOT(dlabel); if (dir->ml_flags & MAC_LOMAC_FLAG_AUX) { mac_lomac_copy_auxsingle(dir, &temp); mac_lomac_set_single(&temp, dir->ml_auxsingle.mle_type, dir->ml_auxsingle.mle_grade); } else { mac_lomac_copy_single(source, &temp); } error = vn_extattr_set(vp, IO_NODELOCKED, MAC_LOMAC_EXTATTR_NAMESPACE, MAC_LOMAC_EXTATTR_NAME, buflen, (char *)&temp, curthread); if (error == 0) mac_lomac_copy(&temp, dest); return (error); } static int mac_lomac_setlabel_vnode_extattr(struct ucred *cred, struct vnode *vp, struct label *vlabel, struct label *intlabel) { struct mac_lomac *source, temp; size_t buflen; int error; buflen = sizeof(temp); bzero(&temp, buflen); source = SLOT(intlabel); if ((source->ml_flags & MAC_LOMAC_FLAG_SINGLE) == 0) return (0); mac_lomac_copy_single(source, &temp); error = vn_extattr_set(vp, IO_NODELOCKED, MAC_LOMAC_EXTATTR_NAMESPACE, MAC_LOMAC_EXTATTR_NAME, buflen, (char *)&temp, curthread); return (error); } /* * Labeling event operations: IPC object. */ static void mac_lomac_create_mbuf_from_socket(struct socket *so, struct label *socketlabel, struct mbuf *m, struct label *mbuflabel) { struct mac_lomac *source, *dest; source = SLOT(socketlabel); dest = SLOT(mbuflabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_socket(struct ucred *cred, struct socket *socket, struct label *socketlabel) { struct mac_lomac *source, *dest; source = SLOT(cred->cr_label); dest = SLOT(socketlabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_pipe(struct ucred *cred, struct pipe *pipe, struct label *pipelabel) { struct mac_lomac *source, *dest; source = SLOT(cred->cr_label); dest = SLOT(pipelabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_socket_from_socket(struct socket *oldsocket, struct label *oldsocketlabel, struct socket *newsocket, struct label *newsocketlabel) { struct mac_lomac *source, *dest; source = SLOT(oldsocketlabel); dest = SLOT(newsocketlabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_relabel_socket(struct ucred *cred, struct socket *socket, struct label *socketlabel, struct label *newlabel) { struct mac_lomac *source, *dest; source = SLOT(newlabel); dest = SLOT(socketlabel); try_relabel(source, dest); } static void mac_lomac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *pipelabel, struct label *newlabel) { struct mac_lomac *source, *dest; source = SLOT(newlabel); dest = SLOT(pipelabel); try_relabel(source, dest); } static void mac_lomac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct label *mbuflabel, struct socket *socket, struct label *socketpeerlabel) { struct mac_lomac *source, *dest; source = SLOT(mbuflabel); dest = SLOT(socketpeerlabel); mac_lomac_copy_single(source, dest); } /* * Labeling event operations: network objects. */ static void mac_lomac_set_socket_peer_from_socket(struct socket *oldsocket, struct label *oldsocketlabel, struct socket *newsocket, struct label *newsocketpeerlabel) { struct mac_lomac *source, *dest; source = SLOT(oldsocketlabel); dest = SLOT(newsocketpeerlabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d, struct label *bpflabel) { struct mac_lomac *source, *dest; source = SLOT(cred->cr_label); dest = SLOT(bpflabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_ifnet(struct ifnet *ifnet, struct label *ifnetlabel) { char tifname[IFNAMSIZ], *p, *q; char tiflist[sizeof(trusted_interfaces)]; struct mac_lomac *dest; int len, grade; dest = SLOT(ifnetlabel); if (ifnet->if_type == IFT_LOOP) { grade = MAC_LOMAC_TYPE_EQUAL; goto set; } if (trust_all_interfaces) { grade = MAC_LOMAC_TYPE_HIGH; goto set; } grade = MAC_LOMAC_TYPE_LOW; if (trusted_interfaces[0] == '\0' || !strvalid(trusted_interfaces, sizeof(trusted_interfaces))) goto set; bzero(tiflist, sizeof(tiflist)); for (p = trusted_interfaces, q = tiflist; *p != '\0'; p++, q++) if(*p != ' ' && *p != '\t') *q = *p; for (p = q = tiflist;; p++) { if (*p == ',' || *p == '\0') { len = p - q; if (len < IFNAMSIZ) { bzero(tifname, sizeof(tifname)); bcopy(q, tifname, len); if (strcmp(tifname, ifnet->if_xname) == 0) { grade = MAC_LOMAC_TYPE_HIGH; break; } } else { *p = '\0'; printf("MAC/LOMAC warning: interface name " "\"%s\" is too long (must be < %d)\n", q, IFNAMSIZ); } if (*p == '\0') break; q = p + 1; } } set: mac_lomac_set_single(dest, grade, 0); mac_lomac_set_range(dest, grade, 0, grade, 0); } static void mac_lomac_create_ipq(struct mbuf *fragment, struct label *fragmentlabel, struct ipq *ipq, struct label *ipqlabel) { struct mac_lomac *source, *dest; source = SLOT(fragmentlabel); dest = SLOT(ipqlabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_datagram_from_ipq(struct ipq *ipq, struct label *ipqlabel, struct mbuf *datagram, struct label *datagramlabel) { struct mac_lomac *source, *dest; source = SLOT(ipqlabel); dest = SLOT(datagramlabel); /* Just use the head, since we require them all to match. */ mac_lomac_copy_single(source, dest); } static void mac_lomac_create_fragment(struct mbuf *datagram, struct label *datagramlabel, struct mbuf *fragment, struct label *fragmentlabel) { struct mac_lomac *source, *dest; source = SLOT(datagramlabel); dest = SLOT(fragmentlabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct label *oldmbuflabel, struct mbuf *newmbuf, struct label *newmbuflabel) { struct mac_lomac *source, *dest; source = SLOT(oldmbuflabel); dest = SLOT(newmbuflabel); /* * Because the source mbuf may not yet have been "created", * just initialized, we do a conditional copy. Since we don't * allow mbufs to have ranges, do a KASSERT to make sure that * doesn't happen. */ KASSERT((source->ml_flags & MAC_LOMAC_FLAG_RANGE) == 0, ("mac_lomac_create_mbuf_from_mbuf: source mbuf has range")); mac_lomac_copy(source, dest); } static void mac_lomac_create_mbuf_linklayer(struct ifnet *ifnet, struct label *ifnetlabel, struct mbuf *mbuf, struct label *mbuflabel) { struct mac_lomac *dest; dest = SLOT(mbuflabel); mac_lomac_set_single(dest, MAC_LOMAC_TYPE_EQUAL, 0); } static void mac_lomac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct label *bpflabel, struct mbuf *mbuf, struct label *mbuflabel) { struct mac_lomac *source, *dest; source = SLOT(bpflabel); dest = SLOT(mbuflabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct label *ifnetlabel, struct mbuf *m, struct label *mbuflabel) { struct mac_lomac *source, *dest; source = SLOT(ifnetlabel); dest = SLOT(mbuflabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct label *oldmbuflabel, struct ifnet *ifnet, struct label *ifnetlabel, struct mbuf *newmbuf, struct label *newmbuflabel) { struct mac_lomac *source, *dest; source = SLOT(oldmbuflabel); dest = SLOT(newmbuflabel); mac_lomac_copy_single(source, dest); } static void mac_lomac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct label *oldmbuflabel, struct mbuf *newmbuf, struct label *newmbuflabel) { struct mac_lomac *source, *dest; source = SLOT(oldmbuflabel); dest = SLOT(newmbuflabel); mac_lomac_copy_single(source, dest); } static int mac_lomac_fragment_match(struct mbuf *fragment, struct label *fragmentlabel, struct ipq *ipq, struct label *ipqlabel) { struct mac_lomac *a, *b; a = SLOT(ipqlabel); b = SLOT(fragmentlabel); return (mac_lomac_equal_single(a, b)); } static void mac_lomac_relabel_ifnet(struct ucred *cred, struct ifnet *ifnet, struct label *ifnetlabel, struct label *newlabel) { struct mac_lomac *source, *dest; source = SLOT(newlabel); dest = SLOT(ifnetlabel); try_relabel(source, dest); } static void mac_lomac_update_ipq(struct mbuf *fragment, struct label *fragmentlabel, struct ipq *ipq, struct label *ipqlabel) { /* NOOP: we only accept matching labels, so no need to update */ } /* * Labeling event operations: processes. */ static void mac_lomac_create_cred(struct ucred *cred_parent, struct ucred *cred_child) { struct mac_lomac *source, *dest; source = SLOT(cred_parent->cr_label); dest = SLOT(cred_child->cr_label); mac_lomac_copy_single(source, dest); mac_lomac_copy_range(source, dest); } static void mac_lomac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp, struct label *vnodelabel, struct label *interpvnodelabel, struct image_params *imgp, struct label *execlabel) { struct mac_lomac *source, *dest, *obj, *robj; source = SLOT(old->cr_label); dest = SLOT(new->cr_label); obj = SLOT(vnodelabel); robj = interpvnodelabel != NULL ? SLOT(interpvnodelabel) : obj; mac_lomac_copy(source, dest); /* * If there's an auxiliary label on the real object, respect it * and assume that this level should be assumed immediately if * a higher level is currently in place. */ if (robj->ml_flags & MAC_LOMAC_FLAG_AUX && !mac_lomac_dominate_element(&robj->ml_auxsingle, &dest->ml_single) && mac_lomac_auxsingle_in_range(robj, dest)) mac_lomac_set_single(dest, robj->ml_auxsingle.mle_type, robj->ml_auxsingle.mle_grade); /* * Restructuring to use the execve transitioning mechanism * instead of the normal demotion mechanism here would be * difficult, so just copy the label over and perform standard * demotion. This is also non-optimal because it will result * in the intermediate label "new" being created and immediately * recycled. */ if (mac_lomac_enabled && revocation_enabled && !mac_lomac_dominate_single(obj, source)) (void)maybe_demote(source, obj, "executing", "file", vp); } static int mac_lomac_execve_will_transition(struct ucred *old, struct vnode *vp, struct label *vnodelabel, struct label *interpvnodelabel, struct image_params *imgp, struct label *execlabel) { struct mac_lomac *subj, *obj, *robj; if (!mac_lomac_enabled || !revocation_enabled) return (0); subj = SLOT(old->cr_label); obj = SLOT(vnodelabel); robj = interpvnodelabel != NULL ? SLOT(interpvnodelabel) : obj; return ((robj->ml_flags & MAC_LOMAC_FLAG_AUX && !mac_lomac_dominate_element(&robj->ml_auxsingle, &subj->ml_single) && mac_lomac_auxsingle_in_range(robj, subj)) || !mac_lomac_dominate_single(obj, subj)); } static void mac_lomac_create_proc0(struct ucred *cred) { struct mac_lomac *dest; dest = SLOT(cred->cr_label); mac_lomac_set_single(dest, MAC_LOMAC_TYPE_EQUAL, 0); mac_lomac_set_range(dest, MAC_LOMAC_TYPE_LOW, 0, MAC_LOMAC_TYPE_HIGH, 0); } static void mac_lomac_create_proc1(struct ucred *cred) { struct mac_lomac *dest; dest = SLOT(cred->cr_label); mac_lomac_set_single(dest, MAC_LOMAC_TYPE_HIGH, 0); mac_lomac_set_range(dest, MAC_LOMAC_TYPE_LOW, 0, MAC_LOMAC_TYPE_HIGH, 0); } static void mac_lomac_relabel_cred(struct ucred *cred, struct label *newlabel) { struct mac_lomac *source, *dest; source = SLOT(newlabel); dest = SLOT(cred->cr_label); try_relabel(source, dest); } /* * Access control checks. */ static int mac_lomac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct label *bpflabel, struct ifnet *ifnet, struct label *ifnetlabel) { struct mac_lomac *a, *b; if (!mac_lomac_enabled) return (0); a = SLOT(bpflabel); b = SLOT(ifnetlabel); if (mac_lomac_equal_single(a, b)) return (0); return (EACCES); } static int mac_lomac_check_cred_relabel(struct ucred *cred, struct label *newlabel) { struct mac_lomac *subj, *new; int error; subj = SLOT(cred->cr_label); new = SLOT(newlabel); /* * If there is a LOMAC label update for the credential, it may * be an update of the single, range, or both. */ error = lomac_atmostflags(new, MAC_LOMAC_FLAGS_BOTH); if (error) return (error); /* * If the LOMAC label is to be changed, authorize as appropriate. */ if (new->ml_flags & MAC_LOMAC_FLAGS_BOTH) { /* * Fill in the missing parts from the previous label. */ if ((new->ml_flags & MAC_LOMAC_FLAG_SINGLE) == 0) mac_lomac_copy_single(subj, new); if ((new->ml_flags & MAC_LOMAC_FLAG_RANGE) == 0) mac_lomac_copy_range(subj, new); /* * To change the LOMAC range on a credential, the new * range label must be in the current range. */ if (!mac_lomac_range_in_range(new, subj)) return (EPERM); /* * To change the LOMAC single label on a credential, the * new single label must be in the new range. Implicitly * from the previous check, the new single is in the old * range. */ if (!mac_lomac_single_in_range(new, new)) return (EPERM); /* * To have EQUAL in any component of the new credential * LOMAC label, the subject must already have EQUAL in * their label. */ if (mac_lomac_contains_equal(new)) { error = mac_lomac_subject_privileged(subj); if (error) return (error); } /* * XXXMAC: Additional consistency tests regarding the * single and range of the new label might be performed * here. */ } return (0); } static int mac_lomac_check_cred_visible(struct ucred *u1, struct ucred *u2) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(u1->cr_label); obj = SLOT(u2->cr_label); /* XXX: range */ if (!mac_lomac_dominate_single(obj, subj)) return (ESRCH); return (0); } static int mac_lomac_check_ifnet_relabel(struct ucred *cred, struct ifnet *ifnet, struct label *ifnetlabel, struct label *newlabel) { struct mac_lomac *subj, *new; int error; subj = SLOT(cred->cr_label); new = SLOT(newlabel); /* * If there is a LOMAC label update for the interface, it may * be an update of the single, range, or both. */ error = lomac_atmostflags(new, MAC_LOMAC_FLAGS_BOTH); if (error) return (error); /* * Relabling network interfaces requires LOMAC privilege. */ error = mac_lomac_subject_privileged(subj); if (error) return (error); /* * If the LOMAC label is to be changed, authorize as appropriate. */ if (new->ml_flags & MAC_LOMAC_FLAGS_BOTH) { /* * Fill in the missing parts from the previous label. */ if ((new->ml_flags & MAC_LOMAC_FLAG_SINGLE) == 0) mac_lomac_copy_single(subj, new); if ((new->ml_flags & MAC_LOMAC_FLAG_RANGE) == 0) mac_lomac_copy_range(subj, new); /* * Rely on the traditional superuser status for the LOMAC * interface relabel requirements. XXXMAC: This will go * away. */ error = suser_cred(cred, 0); if (error) return (EPERM); /* * XXXMAC: Additional consistency tests regarding the single * and the range of the new label might be performed here. */ } return (0); } static int mac_lomac_check_ifnet_transmit(struct ifnet *ifnet, struct label *ifnetlabel, struct mbuf *m, struct label *mbuflabel) { struct mac_lomac *p, *i; if (!mac_lomac_enabled) return (0); p = SLOT(mbuflabel); i = SLOT(ifnetlabel); return (mac_lomac_single_in_range(p, i) ? 0 : EACCES); } static int mac_lomac_check_kld_load(struct ucred *cred, struct vnode *vp, struct label *label) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(label); if (mac_lomac_subject_privileged(subj)) return (EPERM); if (!mac_lomac_high_single(obj)) return (EACCES); return (0); } static int mac_lomac_check_kld_unload(struct ucred *cred) { struct mac_lomac *subj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); if (mac_lomac_subject_privileged(subj)) return (EPERM); return (0); } static int mac_lomac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, struct label *pipelabel, unsigned long cmd, void /* caddr_t */ *data) { if(!mac_lomac_enabled) return (0); /* XXX: This will be implemented soon... */ return (0); } static int mac_lomac_check_pipe_read(struct ucred *cred, struct pipe *pipe, struct label *pipelabel) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT((pipelabel)); if (!mac_lomac_dominate_single(obj, subj)) return (maybe_demote(subj, obj, "reading", "pipe", NULL)); return (0); } static int mac_lomac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, struct label *pipelabel, struct label *newlabel) { struct mac_lomac *subj, *obj, *new; int error; new = SLOT(newlabel); subj = SLOT(cred->cr_label); obj = SLOT(pipelabel); /* * If there is a LOMAC label update for a pipe, it must be a * single update. */ error = lomac_atmostflags(new, MAC_LOMAC_FLAG_SINGLE); if (error) return (error); /* * To perform a relabel of a pipe (LOMAC label or not), LOMAC must * authorize the relabel. */ if (!mac_lomac_single_in_range(obj, subj)) return (EPERM); /* * If the LOMAC label is to be changed, authorize as appropriate. */ if (new->ml_flags & MAC_LOMAC_FLAG_SINGLE) { /* * To change the LOMAC label on a pipe, the new pipe label * must be in the subject range. */ if (!mac_lomac_single_in_range(new, subj)) return (EPERM); /* * To change the LOMAC label on a pipe to be EQUAL, the * subject must have appropriate privilege. */ if (mac_lomac_contains_equal(new)) { error = mac_lomac_subject_privileged(subj); if (error) return (error); } } return (0); } static int mac_lomac_check_pipe_write(struct ucred *cred, struct pipe *pipe, struct label *pipelabel) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT((pipelabel)); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_proc_debug(struct ucred *cred, struct proc *proc) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(proc->p_ucred->cr_label); /* XXX: range checks */ if (!mac_lomac_dominate_single(obj, subj)) return (ESRCH); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_proc_sched(struct ucred *cred, struct proc *proc) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(proc->p_ucred->cr_label); /* XXX: range checks */ if (!mac_lomac_dominate_single(obj, subj)) return (ESRCH); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(proc->p_ucred->cr_label); /* XXX: range checks */ if (!mac_lomac_dominate_single(obj, subj)) return (ESRCH); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_socket_deliver(struct socket *so, struct label *socketlabel, struct mbuf *m, struct label *mbuflabel) { struct mac_lomac *p, *s; if (!mac_lomac_enabled) return (0); p = SLOT(mbuflabel); s = SLOT(socketlabel); return (mac_lomac_equal_single(p, s) ? 0 : EACCES); } static int mac_lomac_check_socket_relabel(struct ucred *cred, struct socket *socket, struct label *socketlabel, struct label *newlabel) { struct mac_lomac *subj, *obj, *new; int error; new = SLOT(newlabel); subj = SLOT(cred->cr_label); obj = SLOT(socketlabel); /* * If there is a LOMAC label update for the socket, it may be * an update of single. */ error = lomac_atmostflags(new, MAC_LOMAC_FLAG_SINGLE); if (error) return (error); /* * To relabel a socket, the old socket single must be in the subject * range. */ if (!mac_lomac_single_in_range(obj, subj)) return (EPERM); /* * If the LOMAC label is to be changed, authorize as appropriate. */ if (new->ml_flags & MAC_LOMAC_FLAG_SINGLE) { /* * To relabel a socket, the new socket single must be in * the subject range. */ if (!mac_lomac_single_in_range(new, subj)) return (EPERM); /* * To change the LOMAC label on the socket to contain EQUAL, * the subject must have appropriate privilege. */ if (mac_lomac_contains_equal(new)) { error = mac_lomac_subject_privileged(subj); if (error) return (error); } } return (0); } static int mac_lomac_check_socket_visible(struct ucred *cred, struct socket *socket, struct label *socketlabel) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(socketlabel); if (!mac_lomac_dominate_single(obj, subj)) return (ENOENT); return (0); } static int mac_lomac_check_system_swapon(struct ucred *cred, struct vnode *vp, struct label *label) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(label); if (mac_lomac_subject_privileged(subj)) return (EPERM); if (!mac_lomac_high_single(obj)) return (EACCES); return (0); } static int mac_lomac_check_system_sysctl(struct ucred *cred, int *name, u_int namelen, void *old, size_t *oldlenp, int inkernel, void *new, size_t newlen) { struct mac_lomac *subj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); /* * In general, treat sysctl variables as lomac/high, but also * require privilege to change them, since they are a * communications channel between grades. Exempt MIB * queries from this due to undocmented sysctl magic. * XXXMAC: This probably requires some more review. */ if (new != NULL) { if (namelen > 0 && name[0] == 0) return (0); #ifdef notdef if (!mac_lomac_subject_dominate_high(subj)) return (EACCES); #endif if (mac_lomac_subject_privileged(subj)) return (EPERM); } return (0); } static int mac_lomac_check_vnode_create(struct ucred *cred, struct vnode *dvp, struct label *dlabel, struct componentname *cnp, struct vattr *vap) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(dlabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); if (obj->ml_flags & MAC_LOMAC_FLAG_AUX && !mac_lomac_dominate_element(&subj->ml_single, &obj->ml_auxsingle)) return (EACCES); return (0); } static int mac_lomac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct label *dlabel, struct vnode *vp, struct label *label, struct componentname *cnp) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(dlabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, struct label *label, acl_type_t type) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_link(struct ucred *cred, struct vnode *dvp, struct label *dlabel, struct vnode *vp, struct label *label, struct componentname *cnp) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(dlabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, struct label *label, int prot) { struct mac_lomac *subj, *obj; /* * Rely on the use of open()-time protections to handle * non-revocation cases. */ if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(label); if (prot & VM_PROT_WRITE) { if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); } if (prot & (VM_PROT_READ | VM_PROT_EXECUTE)) { if (!mac_lomac_dominate_single(obj, subj)) return (maybe_demote(subj, obj, "mapping", "file", vp)); } return (0); } static int mac_lomac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, struct label *label, int prot) { struct mac_lomac *subj, *obj; /* * Rely on the use of open()-time protections to handle * non-revocation cases. */ if (!mac_lomac_enabled || !revocation_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(label); if (prot & VM_PROT_WRITE) { if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); } if (prot & (VM_PROT_READ | VM_PROT_EXECUTE)) { if (!mac_lomac_dominate_single(obj, subj)) return (EACCES); } return (0); } static void mac_lomac_check_vnode_mmap_downgrade(struct ucred *cred, struct vnode *vp, struct label *label, /* XXX vm_prot_t */ int *prot) { struct mac_lomac *subj, *obj; /* * Rely on the use of open()-time protections to handle * non-revocation cases. */ if (!mac_lomac_enabled || !revocation_enabled) return; subj = SLOT(cred->cr_label); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) *prot &= ~VM_PROT_WRITE; } static int mac_lomac_check_vnode_open(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, int acc_mode) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(vnodelabel); /* XXX privilege override for admin? */ if (acc_mode & (VWRITE | VAPPEND | VADMIN)) { if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); } return (0); } static int mac_lomac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, struct vnode *vp, struct label *label) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled || !revocation_enabled) return (0); subj = SLOT(active_cred->cr_label); obj = SLOT(label); if (!mac_lomac_dominate_single(obj, subj)) return (maybe_demote(subj, obj, "reading", "file", vp)); return (0); } static int mac_lomac_check_vnode_relabel(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, struct label *newlabel) { struct mac_lomac *old, *new, *subj; int error; old = SLOT(vnodelabel); new = SLOT(newlabel); subj = SLOT(cred->cr_label); /* * If there is a LOMAC label update for the vnode, it must be a * single label, with an optional explicit auxiliary single. */ error = lomac_atmostflags(new, MAC_LOMAC_FLAG_SINGLE | MAC_LOMAC_FLAG_AUX); if (error) return (error); /* * To perform a relabel of the vnode (LOMAC label or not), LOMAC must * authorize the relabel. */ if (!mac_lomac_single_in_range(old, subj)) return (EPERM); /* * If the LOMAC label is to be changed, authorize as appropriate. */ if (new->ml_flags & MAC_LOMAC_FLAG_SINGLE) { /* * To change the LOMAC label on a vnode, the new vnode label * must be in the subject range. */ if (!mac_lomac_single_in_range(new, subj)) return (EPERM); /* * To change the LOMAC label on the vnode to be EQUAL, * the subject must have appropriate privilege. */ if (mac_lomac_contains_equal(new)) { error = mac_lomac_subject_privileged(subj); if (error) return (error); } } if (new->ml_flags & MAC_LOMAC_FLAG_AUX) { /* * Fill in the missing parts from the previous label. */ if ((new->ml_flags & MAC_LOMAC_FLAG_SINGLE) == 0) mac_lomac_copy_single(subj, new); /* * To change the auxiliary LOMAC label on a vnode, the new * vnode label must be in the subject range. */ if (!mac_lomac_auxsingle_in_range(new, subj)) return (EPERM); /* * To change the auxiliary LOMAC label on the vnode to be * EQUAL, the subject must have appropriate privilege. */ if (mac_lomac_contains_equal(new)) { error = mac_lomac_subject_privileged(subj); if (error) return (error); } } return (0); } static int mac_lomac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, struct label *dlabel, struct vnode *vp, struct label *label, struct componentname *cnp) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(dlabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, struct label *dlabel, struct vnode *vp, struct label *label, int samedir, struct componentname *cnp) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(dlabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); if (vp != NULL) { obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); } return (0); } static int mac_lomac_check_vnode_revoke(struct ucred *cred, struct vnode *vp, struct label *label) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, struct label *label, acl_type_t type, struct acl *acl) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, int attrnamespace, const char *name, struct uio *uio) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(vnodelabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); /* XXX: protect the MAC EA in a special way? */ return (0); } static int mac_lomac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, u_long flags) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(vnodelabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, mode_t mode) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(vnodelabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, uid_t uid, gid_t gid) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(vnodelabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, struct label *vnodelabel, struct timespec atime, struct timespec mtime) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled) return (0); subj = SLOT(cred->cr_label); obj = SLOT(vnodelabel); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static int mac_lomac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred, struct vnode *vp, struct label *label) { struct mac_lomac *subj, *obj; if (!mac_lomac_enabled || !revocation_enabled) return (0); subj = SLOT(active_cred->cr_label); obj = SLOT(label); if (!mac_lomac_subject_dominate(subj, obj)) return (EACCES); return (0); } static void mac_lomac_thread_userret(struct thread *td) { struct proc *p = td->td_proc; struct mac_lomac_proc *subj = PSLOT(p->p_label); struct ucred *newcred, *oldcred; int dodrop; mtx_lock(&subj->mtx); if (subj->mac_lomac.ml_flags & MAC_LOMAC_FLAG_UPDATE) { dodrop = 0; mtx_unlock(&subj->mtx); newcred = crget(); /* * Prevent a lock order reversal in * mac_cred_mmapped_drop_perms; ideally, the other * user of subj->mtx wouldn't be holding Giant. */ mtx_lock(&Giant); PROC_LOCK(p); mtx_lock(&subj->mtx); /* * Check if we lost the race while allocating the cred. */ if ((subj->mac_lomac.ml_flags & MAC_LOMAC_FLAG_UPDATE) == 0) { crfree(newcred); goto out; } oldcred = p->p_ucred; crcopy(newcred, oldcred); crhold(newcred); mac_lomac_copy(&subj->mac_lomac, SLOT(newcred->cr_label)); p->p_ucred = newcred; crfree(oldcred); dodrop = 1; out: mtx_unlock(&subj->mtx); PROC_UNLOCK(p); if (dodrop) mac_cred_mmapped_drop_perms(curthread, newcred); mtx_unlock(&Giant); } else { mtx_unlock(&subj->mtx); } } static struct mac_policy_ops mac_lomac_ops = { .mpo_init = mac_lomac_init, .mpo_init_bpfdesc_label = mac_lomac_init_label, .mpo_init_cred_label = mac_lomac_init_label, .mpo_init_devfsdirent_label = mac_lomac_init_label, .mpo_init_ifnet_label = mac_lomac_init_label, .mpo_init_ipq_label = mac_lomac_init_label_waitcheck, .mpo_init_mbuf_label = mac_lomac_init_label_waitcheck, .mpo_init_mount_label = mac_lomac_init_label, .mpo_init_mount_fs_label = mac_lomac_init_label, .mpo_init_pipe_label = mac_lomac_init_label, .mpo_init_proc_label = mac_lomac_init_proc_label, .mpo_init_socket_label = mac_lomac_init_label_waitcheck, .mpo_init_socket_peer_label = mac_lomac_init_label_waitcheck, .mpo_init_vnode_label = mac_lomac_init_label, .mpo_destroy_bpfdesc_label = mac_lomac_destroy_label, .mpo_destroy_cred_label = mac_lomac_destroy_label, .mpo_destroy_devfsdirent_label = mac_lomac_destroy_label, .mpo_destroy_ifnet_label = mac_lomac_destroy_label, .mpo_destroy_ipq_label = mac_lomac_destroy_label, .mpo_destroy_mbuf_label = mac_lomac_destroy_label, .mpo_destroy_mount_label = mac_lomac_destroy_label, .mpo_destroy_mount_fs_label = mac_lomac_destroy_label, .mpo_destroy_pipe_label = mac_lomac_destroy_label, .mpo_destroy_proc_label = mac_lomac_destroy_proc_label, .mpo_destroy_socket_label = mac_lomac_destroy_label, .mpo_destroy_socket_peer_label = mac_lomac_destroy_label, .mpo_destroy_vnode_label = mac_lomac_destroy_label, .mpo_copy_mbuf_label = mac_lomac_copy_label, .mpo_copy_pipe_label = mac_lomac_copy_label, .mpo_copy_socket_label = mac_lomac_copy_label, .mpo_copy_vnode_label = mac_lomac_copy_label, .mpo_externalize_cred_label = mac_lomac_externalize_label, .mpo_externalize_ifnet_label = mac_lomac_externalize_label, .mpo_externalize_pipe_label = mac_lomac_externalize_label, .mpo_externalize_socket_label = mac_lomac_externalize_label, .mpo_externalize_socket_peer_label = mac_lomac_externalize_label, .mpo_externalize_vnode_label = mac_lomac_externalize_label, .mpo_internalize_cred_label = mac_lomac_internalize_label, .mpo_internalize_ifnet_label = mac_lomac_internalize_label, .mpo_internalize_pipe_label = mac_lomac_internalize_label, .mpo_internalize_socket_label = mac_lomac_internalize_label, .mpo_internalize_vnode_label = mac_lomac_internalize_label, .mpo_create_devfs_device = mac_lomac_create_devfs_device, .mpo_create_devfs_directory = mac_lomac_create_devfs_directory, .mpo_create_devfs_symlink = mac_lomac_create_devfs_symlink, .mpo_create_mount = mac_lomac_create_mount, .mpo_create_root_mount = mac_lomac_create_root_mount, .mpo_relabel_vnode = mac_lomac_relabel_vnode, .mpo_update_devfsdirent = mac_lomac_update_devfsdirent, .mpo_associate_vnode_devfs = mac_lomac_associate_vnode_devfs, .mpo_associate_vnode_extattr = mac_lomac_associate_vnode_extattr, .mpo_associate_vnode_singlelabel = mac_lomac_associate_vnode_singlelabel, .mpo_create_vnode_extattr = mac_lomac_create_vnode_extattr, .mpo_setlabel_vnode_extattr = mac_lomac_setlabel_vnode_extattr, .mpo_create_mbuf_from_socket = mac_lomac_create_mbuf_from_socket, .mpo_create_pipe = mac_lomac_create_pipe, .mpo_create_socket = mac_lomac_create_socket, .mpo_create_socket_from_socket = mac_lomac_create_socket_from_socket, .mpo_relabel_pipe = mac_lomac_relabel_pipe, .mpo_relabel_socket = mac_lomac_relabel_socket, .mpo_set_socket_peer_from_mbuf = mac_lomac_set_socket_peer_from_mbuf, .mpo_set_socket_peer_from_socket = mac_lomac_set_socket_peer_from_socket, .mpo_create_bpfdesc = mac_lomac_create_bpfdesc, .mpo_create_datagram_from_ipq = mac_lomac_create_datagram_from_ipq, .mpo_create_fragment = mac_lomac_create_fragment, .mpo_create_ifnet = mac_lomac_create_ifnet, .mpo_create_ipq = mac_lomac_create_ipq, .mpo_create_mbuf_from_mbuf = mac_lomac_create_mbuf_from_mbuf, .mpo_create_mbuf_linklayer = mac_lomac_create_mbuf_linklayer, .mpo_create_mbuf_from_bpfdesc = mac_lomac_create_mbuf_from_bpfdesc, .mpo_create_mbuf_from_ifnet = mac_lomac_create_mbuf_from_ifnet, .mpo_create_mbuf_multicast_encap = mac_lomac_create_mbuf_multicast_encap, .mpo_create_mbuf_netlayer = mac_lomac_create_mbuf_netlayer, .mpo_fragment_match = mac_lomac_fragment_match, .mpo_relabel_ifnet = mac_lomac_relabel_ifnet, .mpo_update_ipq = mac_lomac_update_ipq, .mpo_create_cred = mac_lomac_create_cred, .mpo_execve_transition = mac_lomac_execve_transition, .mpo_execve_will_transition = mac_lomac_execve_will_transition, .mpo_create_proc0 = mac_lomac_create_proc0, .mpo_create_proc1 = mac_lomac_create_proc1, .mpo_relabel_cred = mac_lomac_relabel_cred, .mpo_check_bpfdesc_receive = mac_lomac_check_bpfdesc_receive, .mpo_check_cred_relabel = mac_lomac_check_cred_relabel, .mpo_check_cred_visible = mac_lomac_check_cred_visible, .mpo_check_ifnet_relabel = mac_lomac_check_ifnet_relabel, .mpo_check_ifnet_transmit = mac_lomac_check_ifnet_transmit, .mpo_check_kld_load = mac_lomac_check_kld_load, .mpo_check_kld_unload = mac_lomac_check_kld_unload, .mpo_check_pipe_ioctl = mac_lomac_check_pipe_ioctl, .mpo_check_pipe_read = mac_lomac_check_pipe_read, .mpo_check_pipe_relabel = mac_lomac_check_pipe_relabel, .mpo_check_pipe_write = mac_lomac_check_pipe_write, .mpo_check_proc_debug = mac_lomac_check_proc_debug, .mpo_check_proc_sched = mac_lomac_check_proc_sched, .mpo_check_proc_signal = mac_lomac_check_proc_signal, .mpo_check_socket_deliver = mac_lomac_check_socket_deliver, .mpo_check_socket_relabel = mac_lomac_check_socket_relabel, .mpo_check_socket_visible = mac_lomac_check_socket_visible, .mpo_check_system_swapon = mac_lomac_check_system_swapon, .mpo_check_system_sysctl = mac_lomac_check_system_sysctl, .mpo_check_vnode_access = mac_lomac_check_vnode_open, .mpo_check_vnode_create = mac_lomac_check_vnode_create, .mpo_check_vnode_delete = mac_lomac_check_vnode_delete, .mpo_check_vnode_deleteacl = mac_lomac_check_vnode_deleteacl, .mpo_check_vnode_link = mac_lomac_check_vnode_link, .mpo_check_vnode_mmap = mac_lomac_check_vnode_mmap, .mpo_check_vnode_mmap_downgrade = mac_lomac_check_vnode_mmap_downgrade, .mpo_check_vnode_mprotect = mac_lomac_check_vnode_mprotect, .mpo_check_vnode_open = mac_lomac_check_vnode_open, .mpo_check_vnode_read = mac_lomac_check_vnode_read, .mpo_check_vnode_relabel = mac_lomac_check_vnode_relabel, .mpo_check_vnode_rename_from = mac_lomac_check_vnode_rename_from, .mpo_check_vnode_rename_to = mac_lomac_check_vnode_rename_to, .mpo_check_vnode_revoke = mac_lomac_check_vnode_revoke, .mpo_check_vnode_setacl = mac_lomac_check_vnode_setacl, .mpo_check_vnode_setextattr = mac_lomac_check_vnode_setextattr, .mpo_check_vnode_setflags = mac_lomac_check_vnode_setflags, .mpo_check_vnode_setmode = mac_lomac_check_vnode_setmode, .mpo_check_vnode_setowner = mac_lomac_check_vnode_setowner, .mpo_check_vnode_setutimes = mac_lomac_check_vnode_setutimes, .mpo_check_vnode_write = mac_lomac_check_vnode_write, .mpo_thread_userret = mac_lomac_thread_userret, }; MAC_POLICY_SET(&mac_lomac_ops, mac_lomac, "TrustedBSD MAC/LOMAC", MPC_LOADTIME_FLAG_NOTLATE | MPC_LOADTIME_FLAG_LABELMBUFS, &mac_lomac_slot);