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-rw-r--r--sys/security/mac/mac_sysv_msg.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/sys/security/mac/mac_sysv_msg.c b/sys/security/mac/mac_sysv_msg.c
new file mode 100644
index 000000000000..c40232290857
--- /dev/null
+++ b/sys/security/mac/mac_sysv_msg.c
@@ -0,0 +1,278 @@
+/*-
+ * Copyright (c) 2003-2004 Networks Associates Technology, Inc.
+ * Copyright (c) 2006 SPARTA, Inc.
+ * Copyright (c) 2008 Apple Inc.
+ * Copyright (c) 2009 Robert N. M. Watson
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project in part by Network
+ * Associates Laboratories, 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.
+ *
+ * This software was enhanced by SPARTA ISSO under SPAWAR contract
+ * N66001-04-C-6019 ("SEFOS").
+ *
+ * This software was developed at the University of Cambridge Computer
+ * Laboratory with support from a grant from Google, Inc.
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "opt_kdtrace.h"
+#include "opt_mac.h"
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/mutex.h>
+#include <sys/sbuf.h>
+#include <sys/sdt.h>
+#include <sys/systm.h>
+#include <sys/vnode.h>
+#include <sys/mount.h>
+#include <sys/file.h>
+#include <sys/namei.h>
+#include <sys/sysctl.h>
+#include <sys/msg.h>
+
+#include <security/mac/mac_framework.h>
+#include <security/mac/mac_internal.h>
+#include <security/mac/mac_policy.h>
+
+static struct label *
+mac_sysv_msgmsg_label_alloc(void)
+{
+ struct label *label;
+
+ label = mac_labelzone_alloc(M_WAITOK);
+ MAC_POLICY_PERFORM(sysvmsg_init_label, label);
+ return (label);
+}
+
+void
+mac_sysvmsg_init(struct msg *msgptr)
+{
+
+ if (mac_labeled & MPC_OBJECT_SYSVMSG)
+ msgptr->label = mac_sysv_msgmsg_label_alloc();
+ else
+ msgptr->label = NULL;
+}
+
+static struct label *
+mac_sysv_msgqueue_label_alloc(void)
+{
+ struct label *label;
+
+ label = mac_labelzone_alloc(M_WAITOK);
+ MAC_POLICY_PERFORM(sysvmsq_init_label, label);
+ return (label);
+}
+
+void
+mac_sysvmsq_init(struct msqid_kernel *msqkptr)
+{
+
+ if (mac_labeled & MPC_OBJECT_SYSVMSQ)
+ msqkptr->label = mac_sysv_msgqueue_label_alloc();
+ else
+ msqkptr->label = NULL;
+}
+
+static void
+mac_sysv_msgmsg_label_free(struct label *label)
+{
+
+ MAC_POLICY_PERFORM_NOSLEEP(sysvmsg_destroy_label, label);
+ mac_labelzone_free(label);
+}
+
+void
+mac_sysvmsg_destroy(struct msg *msgptr)
+{
+
+ if (msgptr->label != NULL) {
+ mac_sysv_msgmsg_label_free(msgptr->label);
+ msgptr->label = NULL;
+ }
+}
+
+static void
+mac_sysv_msgqueue_label_free(struct label *label)
+{
+
+ MAC_POLICY_PERFORM_NOSLEEP(sysvmsq_destroy_label, label);
+ mac_labelzone_free(label);
+}
+
+void
+mac_sysvmsq_destroy(struct msqid_kernel *msqkptr)
+{
+
+ if (msqkptr->label != NULL) {
+ mac_sysv_msgqueue_label_free(msqkptr->label);
+ msqkptr->label = NULL;
+ }
+}
+
+void
+mac_sysvmsg_create(struct ucred *cred, struct msqid_kernel *msqkptr,
+ struct msg *msgptr)
+{
+
+ MAC_POLICY_PERFORM_NOSLEEP(sysvmsg_create, cred, msqkptr,
+ msqkptr->label, msgptr, msgptr->label);
+}
+
+void
+mac_sysvmsq_create(struct ucred *cred, struct msqid_kernel *msqkptr)
+{
+
+ MAC_POLICY_PERFORM_NOSLEEP(sysvmsq_create, cred, msqkptr,
+ msqkptr->label);
+}
+
+void
+mac_sysvmsg_cleanup(struct msg *msgptr)
+{
+
+ MAC_POLICY_PERFORM_NOSLEEP(sysvmsg_cleanup, msgptr->label);
+}
+
+void
+mac_sysvmsq_cleanup(struct msqid_kernel *msqkptr)
+{
+
+ MAC_POLICY_PERFORM_NOSLEEP(sysvmsq_cleanup, msqkptr->label);
+}
+
+MAC_CHECK_PROBE_DEFINE3(sysvmsq_check_msgmsq, "struct ucred *",
+ "struct msg *", "struct msqid_kernel *");
+
+int
+mac_sysvmsq_check_msgmsq(struct ucred *cred, struct msg *msgptr,
+ struct msqid_kernel *msqkptr)
+{
+ int error;
+
+ MAC_POLICY_CHECK_NOSLEEP(sysvmsq_check_msgmsq, cred, msgptr,
+ msgptr->label, msqkptr, msqkptr->label);
+ MAC_CHECK_PROBE3(sysvmsq_check_msgmsq, error, cred, msgptr, msqkptr);
+
+ return (error);
+}
+
+MAC_CHECK_PROBE_DEFINE2(sysvmsq_check_msgrcv, "struct ucred *",
+ "struct msg *");
+
+int
+mac_sysvmsq_check_msgrcv(struct ucred *cred, struct msg *msgptr)
+{
+ int error;
+
+ MAC_POLICY_CHECK_NOSLEEP(sysvmsq_check_msgrcv, cred, msgptr,
+ msgptr->label);
+ MAC_CHECK_PROBE2(sysvmsq_check_msgrcv, error, cred, msgptr);
+
+ return (error);
+}
+
+MAC_CHECK_PROBE_DEFINE2(sysvmsq_check_msgrmid, "struct ucred *",
+ "struct msg *");
+
+int
+mac_sysvmsq_check_msgrmid(struct ucred *cred, struct msg *msgptr)
+{
+ int error;
+
+ MAC_POLICY_CHECK_NOSLEEP(sysvmsq_check_msgrmid, cred, msgptr,
+ msgptr->label);
+ MAC_CHECK_PROBE2(sysvmsq_check_msgrmid, error, cred, msgptr);
+
+ return (error);
+}
+
+MAC_CHECK_PROBE_DEFINE2(sysvmsq_check_msqget, "struct ucred *",
+ "struct msqid_kernel *");
+
+int
+mac_sysvmsq_check_msqget(struct ucred *cred, struct msqid_kernel *msqkptr)
+{
+ int error;
+
+ MAC_POLICY_CHECK_NOSLEEP(sysvmsq_check_msqget, cred, msqkptr,
+ msqkptr->label);
+ MAC_CHECK_PROBE2(sysvmsq_check_msqget, error, cred, msqkptr);
+
+ return (error);
+}
+
+MAC_CHECK_PROBE_DEFINE2(sysvmsq_check_msqsnd, "struct ucred *",
+ "struct msqid_kernel *");
+
+int
+mac_sysvmsq_check_msqsnd(struct ucred *cred, struct msqid_kernel *msqkptr)
+{
+ int error;
+
+ MAC_POLICY_CHECK_NOSLEEP(sysvmsq_check_msqsnd, cred, msqkptr,
+ msqkptr->label);
+ MAC_CHECK_PROBE2(sysvmsq_check_msqsnd, error, cred, msqkptr);
+
+ return (error);
+}
+
+MAC_CHECK_PROBE_DEFINE2(sysvmsq_check_msqrcv, "struct ucred *",
+ "struct msqid_kernel *");
+
+int
+mac_sysvmsq_check_msqrcv(struct ucred *cred, struct msqid_kernel *msqkptr)
+{
+ int error;
+
+ MAC_POLICY_CHECK_NOSLEEP(sysvmsq_check_msqrcv, cred, msqkptr,
+ msqkptr->label);
+ MAC_CHECK_PROBE2(sysvmsq_check_msqrcv, error, cred, msqkptr);
+
+ return (error);
+}
+
+MAC_CHECK_PROBE_DEFINE3(sysvmsq_check_msqctl, "struct ucred *",
+ "struct msqid_kernel *", "int");
+
+int
+mac_sysvmsq_check_msqctl(struct ucred *cred, struct msqid_kernel *msqkptr,
+ int cmd)
+{
+ int error;
+
+ MAC_POLICY_CHECK_NOSLEEP(sysvmsq_check_msqctl, cred, msqkptr,
+ msqkptr->label, cmd);
+ MAC_CHECK_PROBE3(sysvmsq_check_msqctl, error, cred, msqkptr, cmd);
+
+ return (error);
+}
generated by cgit v1.3 (git 2.53.0) at 2026-05-14 06:42:43 +0000