xnu-6153.121.1.tar.gz

[apple/xnu.git] / security / mac_process.c

diff --git a/security/mac_process.c b/security/mac_process.c
index 6ac8b6b5f2184eb35e971c0ccc539505d55cce1c..31d539af2a02b457c1fa3f34252a991bef32ba27 100644 (file)
--- a/security/mac_process.c
+++ b/security/mac_process.c
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2007-2010 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

- * 
+ *

  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in


@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.

- * 
+ *

  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.

- * 
+ *

  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,


@@ -22,7 +22,7 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
+ *

  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 


@@ -72,8 +72,11 @@
 #include <sys/proc_internal.h>
 #include <sys/kauth.h>
 #include <sys/imgact.h>
 #include <sys/proc_internal.h>
 #include <sys/kauth.h>
 #include <sys/imgact.h>

+#include <mach/mach_types.h>
+#include <kern/task.h>

 
 #include <security/mac_internal.h>
 
 #include <security/mac_internal.h>

+#include <security/mac_mach_internal.h>

 
 #include <bsd/security/audit/audit.h>
 
 
 #include <bsd/security/audit/audit.h>
 


@@ -83,10 +86,11 @@ mac_cred_label_alloc(void)
        struct label *label;
 
        label = mac_labelzone_alloc(MAC_WAITOK);
        struct label *label;
 
        label = mac_labelzone_alloc(MAC_WAITOK);

-       if (label == NULL)
-               return (NULL);
+       if (label == NULL) {
+               return NULL;
+       }

        MAC_PERFORM(cred_label_init, label);
        MAC_PERFORM(cred_label_init, label);

-       return (label);
+       return label;

 }
 
 void
 }
 
 void


@@ -102,6 +106,12 @@ mac_cred_label_free(struct label *label)
        mac_labelzone_free(label);
 }
 
        mac_labelzone_free(label);
 }
 

+int
+mac_cred_label_compare(struct label *a, struct label *b)
+{
+       return bcmp(a, b, sizeof(*a)) == 0;
+}
+

 int
 mac_cred_label_externalize_audit(struct proc *p, struct mac *mac)
 {
 int
 mac_cred_label_externalize_audit(struct proc *p, struct mac *mac)
 {


@@ -114,13 +124,12 @@ mac_cred_label_externalize_audit(struct proc *p, struct mac *mac)
            mac->m_string, mac->m_buflen);
 
        kauth_cred_unref(&cr);
            mac->m_string, mac->m_buflen);
 
        kauth_cred_unref(&cr);

-       return (error);
+       return error;

 }
 
 void
 mac_cred_label_destroy(kauth_cred_t cred)
 {
 }
 
 void
 mac_cred_label_destroy(kauth_cred_t cred)
 {

-

        mac_cred_label_free(cred->cr_label);
        cred->cr_label = NULL;
 }
        mac_cred_label_free(cred->cr_label);
        cred->cr_label = NULL;
 }


@@ -133,7 +142,7 @@ mac_cred_label_externalize(struct label *label, char *elements,
 
        error = MAC_EXTERNALIZE(cred, label, elements, outbuf, outbuflen);
 
 
        error = MAC_EXTERNALIZE(cred, label, elements, outbuf, outbuflen);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -143,7 +152,7 @@ mac_cred_label_internalize(struct label *label, char *string)
 
        error = MAC_INTERNALIZE(cred, label, string);
 
 
        error = MAC_INTERNALIZE(cred, label, string);
 

-       return (error);
+       return error;

 }
 
 /*
 }
 
 /*


@@ -157,7 +166,7 @@ mac_cred_label_associate_fork(kauth_cred_t cred, proc_t proc)
 {
        MAC_PERFORM(cred_label_associate_fork, cred, proc);
 }
 {
        MAC_PERFORM(cred_label_associate_fork, cred, proc);
 }

-       
+

 /*
  * Initialize MAC label for the first kernel process, from which other
  * kernel processes and threads are spawned.
 /*
  * Initialize MAC label for the first kernel process, from which other
  * kernel processes and threads are spawned.


@@ -165,7 +174,6 @@ mac_cred_label_associate_fork(kauth_cred_t cred, proc_t proc)
 void
 mac_cred_label_associate_kernel(kauth_cred_t cred)
 {
 void
 mac_cred_label_associate_kernel(kauth_cred_t cred)
 {

-

        MAC_PERFORM(cred_label_associate_kernel, cred);
 }
 
        MAC_PERFORM(cred_label_associate_kernel, cred);
 }
 


@@ -176,7 +184,6 @@ mac_cred_label_associate_kernel(kauth_cred_t cred)
 void
 mac_cred_label_associate_user(kauth_cred_t cred)
 {
 void
 mac_cred_label_associate_user(kauth_cred_t cred)
 {

-

        MAC_PERFORM(cred_label_associate_user, cred);
 }
 
        MAC_PERFORM(cred_label_associate_user, cred);
 }
 


@@ -188,7 +195,6 @@ mac_cred_label_associate_user(kauth_cred_t cred)
 void
 mac_cred_label_associate(struct ucred *parent_cred, struct ucred *child_cred)
 {
 void
 mac_cred_label_associate(struct ucred *parent_cred, struct ucred *child_cred)
 {

-

        MAC_PERFORM(cred_label_associate, parent_cred, child_cred);
 }
 
        MAC_PERFORM(cred_label_associate, parent_cred, child_cred);
 }
 


@@ -201,29 +207,36 @@ mac_execve_enter(user_addr_t mac_p, struct image_params *imgp)
        int error;
        size_t ulen;
 
        int error;
        size_t ulen;
 

-       if (mac_p == USER_ADDR_NULL)
-               return (0);
+       if (mac_p == USER_ADDR_NULL) {
+               return 0;
+       }

 
        if (IS_64BIT_PROCESS(current_proc())) {
 
        if (IS_64BIT_PROCESS(current_proc())) {

-               error = copyin(mac_p, &mac, sizeof(mac));
+               struct user64_mac mac64;
+               error = copyin(mac_p, &mac64, sizeof(mac64));
+               mac.m_buflen = mac64.m_buflen;
+               mac.m_string = mac64.m_string;

        } else {
        } else {

-               struct mac mac32;
+               struct user32_mac mac32;

                error = copyin(mac_p, &mac32, sizeof(mac32));
                mac.m_buflen = mac32.m_buflen;
                error = copyin(mac_p, &mac32, sizeof(mac32));
                mac.m_buflen = mac32.m_buflen;

-               mac.m_string = CAST_USER_ADDR_T(mac32.m_string);
+               mac.m_string = mac32.m_string;
+       }
+       if (error) {
+               return error;

        }
        }

-       if (error)
-               return (error);

 
        error = mac_check_structmac_consistent(&mac);
 
        error = mac_check_structmac_consistent(&mac);

-       if (error)
-               return (error);
+       if (error) {
+               return error;
+       }

 
        execlabel = mac_cred_label_alloc();
        MALLOC(buffer, char *, mac.m_buflen, M_MACTEMP, M_WAITOK);
        error = copyinstr(CAST_USER_ADDR_T(mac.m_string), buffer, mac.m_buflen, &ulen);
 
        execlabel = mac_cred_label_alloc();
        MALLOC(buffer, char *, mac.m_buflen, M_MACTEMP, M_WAITOK);
        error = copyinstr(CAST_USER_ADDR_T(mac.m_string), buffer, mac.m_buflen, &ulen);

-       if (error)
+       if (error) {

                goto out;
                goto out;

+       }

        AUDIT_ARG(mac_string, buffer);
 
        error = mac_cred_label_internalize(execlabel, buffer);
        AUDIT_ARG(mac_string, buffer);
 
        error = mac_cred_label_internalize(execlabel, buffer);


@@ -234,20 +247,24 @@ out:
        }
        imgp->ip_execlabelp = execlabel;
        FREE(buffer, M_MACTEMP);
        }
        imgp->ip_execlabelp = execlabel;
        FREE(buffer, M_MACTEMP);

-       return (error);
+       return error;

 }
 
 /*
  * When the subject's label changes, it may require revocation of privilege
  * to mapped objects.  This can't be done on-the-fly later with a unified
  * buffer cache.
 }
 
 /*
  * When the subject's label changes, it may require revocation of privilege
  * to mapped objects.  This can't be done on-the-fly later with a unified
  * buffer cache.

+ *
+ * XXX:                CRF_MAC_ENFORCE should be in a kauth_cred_t field, rather
+ * XXX:                than a posix_cred_t field.

  */
 void
 mac_cred_label_update(kauth_cred_t cred, struct label *newlabel)
 {
  */
 void
 mac_cred_label_update(kauth_cred_t cred, struct label *newlabel)
 {

+       posix_cred_t pcred = posix_cred_get(cred);

 
        /* force label to be part of "matching" for credential */
 
        /* force label to be part of "matching" for credential */

-       cred->cr_flags |= CRF_MAC_ENFORCE;
+       pcred->cr_flags |= CRF_MAC_ENFORCE;

 
        /* inform the policies of the update */
        MAC_PERFORM(cred_label_update, cred, newlabel);
 
        /* inform the policies of the update */
        MAC_PERFORM(cred_label_update, cred, newlabel);


@@ -258,12 +275,16 @@ mac_cred_check_label_update(kauth_cred_t cred, struct label *newlabel)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_proc_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(cred_check_label_update, cred, newlabel);
 
 
        MAC_CHECK(cred_check_label_update, cred, newlabel);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -271,25 +292,16 @@ mac_cred_check_visible(kauth_cred_t u1, kauth_cred_t u2)
 {
        int error;
 
 {
        int error;
 

-
-
-       if (!mac_proc_enforce)
-               return (0);
-
-
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(cred_check_visible, u1, u2);
 
 
        MAC_CHECK(cred_check_visible, u1, u2);
 

-
-       return (error);
-}
-
-/*                                                                                                    
- * called with process locked.                                                                        
- */
-void mac_proc_set_enforce(proc_t p, int enforce_flags)
-{
-        p->p_mac_enforce |= enforce_flags;
+       return error;

 }
 
 int
 }
 
 int


@@ -298,17 +310,41 @@ mac_proc_check_debug(proc_t curp, struct proc *proc)
        kauth_cred_t cred;
        int error;
 
        kauth_cred_t cred;
        int error;
 

-
-
-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(curp, MAC_PROC_ENFORCE))
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
        cred = kauth_cred_proc_ref(curp);
        MAC_CHECK(proc_check_debug, cred, proc);
        kauth_cred_unref(&cred);
 
 
        cred = kauth_cred_proc_ref(curp);
        MAC_CHECK(proc_check_debug, cred, proc);
        kauth_cred_unref(&cred);
 

-       return (error);
+       return error;
+}
+
+int
+mac_proc_check_dump_core(struct proc *proc)
+{
+       int error;
+
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(proc)) {
+               return 0;
+       }
+
+       MAC_CHECK(proc_check_dump_core, proc);
+
+       return error;

 }
 
 int
 }
 
 int


@@ -317,15 +353,21 @@ mac_proc_check_fork(proc_t curp)
        kauth_cred_t cred;
        int error;
 
        kauth_cred_t cred;
        int error;
 

-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(curp, MAC_PROC_ENFORCE))
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
        cred = kauth_cred_proc_ref(curp);
        MAC_CHECK(proc_check_fork, cred, curp);
        kauth_cred_unref(&cred);
 
 
        cred = kauth_cred_proc_ref(curp);
        MAC_CHECK(proc_check_fork, cred, curp);
        kauth_cred_unref(&cred);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -335,7 +377,7 @@ mac_proc_check_get_task_name(struct ucred *cred, struct proc *p)
 
        MAC_CHECK(proc_check_get_task_name, cred, p);
 
 
        MAC_CHECK(proc_check_get_task_name, cred, p);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -345,226 +387,305 @@ mac_proc_check_get_task(struct ucred *cred, struct proc *p)
 
        MAC_CHECK(proc_check_get_task, cred, p);
 
 
        MAC_CHECK(proc_check_get_task, cred, p);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int

-mac_proc_check_mprotect(proc_t proc,
-    user_addr_t addr, user_size_t size, int prot)
+mac_proc_check_expose_task(struct ucred *cred, struct proc *p)

 {
 {

-       kauth_cred_t cred;

        int error;
 
        int error;
 

-       if (!mac_vm_enforce ||
-           !mac_proc_check_enforce(proc, MAC_VM_ENFORCE))
-               return (0);
-
-       cred = kauth_cred_proc_ref(proc);
-       MAC_CHECK(proc_check_mprotect, cred, proc, addr, size, prot);
-       kauth_cred_unref(&cred);
+       MAC_CHECK(proc_check_expose_task, cred, p);

 
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int

-mac_proc_check_run_cs_invalid(proc_t proc)
+mac_proc_check_inherit_ipc_ports(struct proc *p, struct vnode *cur_vp, off_t cur_offset, struct vnode *img_vp, off_t img_offset, struct vnode *scriptvp)

 {
        int error;
 {
        int error;

-       
-       if (!mac_vm_enforce) return (0);
-       
-       MAC_CHECK(proc_check_run_cs_invalid, proc);
-       
-       return (error);
+
+       MAC_CHECK(proc_check_inherit_ipc_ports, p, cur_vp, cur_offset, img_vp, img_offset, scriptvp);
+
+       return error;

 }
 }

-                                  
+
+/*
+ * The type of maxprot in proc_check_map_anon must be equivalent to vm_prot_t
+ * (defined in <mach/vm_prot.h>). mac_policy.h does not include any header
+ * files, so cannot use the typedef itself.
+ */

 int
 int

-mac_proc_check_sched(proc_t curp, struct proc *proc)
+mac_proc_check_map_anon(proc_t proc, user_addr_t u_addr,
+    user_size_t u_size, int prot, int flags, int *maxprot)

 {
        kauth_cred_t cred;
        int error;
 
 {
        kauth_cred_t cred;
        int error;
 

+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_vm_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(proc)) {
+               return 0;
+       }

 
 

-
-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(curp, MAC_PROC_ENFORCE))
-               return (0);
-
-       cred = kauth_cred_proc_ref(curp);
-       MAC_CHECK(proc_check_sched, cred, proc);
+       cred = kauth_cred_proc_ref(proc);
+       MAC_CHECK(proc_check_map_anon, proc, cred, u_addr, u_size, prot, flags, maxprot);

        kauth_cred_unref(&cred);
 
        kauth_cred_unref(&cred);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int

-mac_proc_check_signal(proc_t curp, struct proc *proc, int signum)
+mac_proc_check_mprotect(proc_t proc,
+    user_addr_t addr, user_size_t size, int prot)

 {
        kauth_cred_t cred;
        int error;
 
 {
        kauth_cred_t cred;
        int error;
 

+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_vm_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(proc)) {
+               return 0;
+       }

 
 

-
-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(curp, MAC_PROC_ENFORCE))
-               return (0);
-
-       cred = kauth_cred_proc_ref(curp);
-       MAC_CHECK(proc_check_signal, cred, proc, signum);
+       cred = kauth_cred_proc_ref(proc);
+       MAC_CHECK(proc_check_mprotect, cred, proc, addr, size, prot);

        kauth_cred_unref(&cred);
 
        kauth_cred_unref(&cred);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int

-mac_proc_check_wait(proc_t curp, struct proc *proc)
+mac_proc_check_run_cs_invalid(proc_t proc)

 {
 {

-       kauth_cred_t cred;

        int error;
 
        int error;
 

+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_vm_enforce) {
+               return 0;
+       }
+#endif
+
+       MAC_CHECK(proc_check_run_cs_invalid, proc);
+
+       return error;
+}

 
 

+int
+mac_proc_check_sched(proc_t curp, struct proc *proc)
+{
+       kauth_cred_t cred;
+       int error;

 
 

-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(curp, MAC_PROC_ENFORCE))
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
        cred = kauth_cred_proc_ref(curp);
 
        cred = kauth_cred_proc_ref(curp);

-       MAC_CHECK(proc_check_wait, cred, proc);
+       MAC_CHECK(proc_check_sched, cred, proc);

        kauth_cred_unref(&cred);
 
        kauth_cred_unref(&cred);
 

-       return (error);
+       return error;

 }
 
 }
 

-#if CONFIG_LCTX
-/*
- * Login Context
- */
-

 int
 int

-mac_proc_check_setlcid (struct proc *p0, struct proc *p,
-                       pid_t pid, pid_t lcid)
+mac_proc_check_signal(proc_t curp, struct proc *proc, int signum)

 {
 {

+       kauth_cred_t cred;

        int error;
 
        int error;
 

-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(p0, MAC_PROC_ENFORCE))
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
 

-       MAC_CHECK(proc_check_setlcid, p0, p, pid, lcid);
-       return (error);
+       cred = kauth_cred_proc_ref(curp);
+       MAC_CHECK(proc_check_signal, cred, proc, signum);
+       kauth_cred_unref(&cred);
+
+       return error;

 }
 
 int
 }
 
 int

-mac_proc_check_getlcid (struct proc *p0, struct proc *p, pid_t pid)
+mac_proc_check_syscall_unix(proc_t curp, int scnum)

 {
        int error;
 
 {
        int error;
 

-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(p0, MAC_PROC_ENFORCE))
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
 

-       MAC_CHECK(proc_check_getlcid, p0, p, pid);
-       return (error);
-}
+       MAC_CHECK(proc_check_syscall_unix, curp, scnum);

 
 

-void
-mac_lctx_notify_create (struct proc *p, struct lctx *l)
-{
-       MAC_PERFORM(lctx_notify_create, p, l);
+       return error;

 }
 
 }
 

-void
-mac_lctx_notify_join (struct proc *p, struct lctx *l)
+int
+mac_proc_check_wait(proc_t curp, struct proc *proc)

 {
 {

-       MAC_PERFORM(lctx_notify_join, p, l);
-}
+       kauth_cred_t cred;
+       int error;

 
 

-void
-mac_lctx_notify_leave (struct proc *p, struct lctx *l)
-{
-       MAC_PERFORM(lctx_notify_leave, p, l);
-}
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
 

-struct label *
-mac_lctx_label_alloc(void)
-{
-       struct label *label;
+       cred = kauth_cred_proc_ref(curp);
+       MAC_CHECK(proc_check_wait, cred, proc);
+       kauth_cred_unref(&cred);

 
 

-       label = mac_labelzone_alloc(MAC_WAITOK);
-       if (label == NULL)
-               return (NULL);
-       MAC_PERFORM(lctx_label_init, label);
-       return (label);
+       return error;

 }
 
 void
 }
 
 void

-mac_lctx_label_free(struct label *label)
+mac_proc_notify_exit(struct proc *proc)

 {
 {

-
-       MAC_PERFORM(lctx_label_destroy, label);
-       mac_labelzone_free(label);
+       MAC_PERFORM(proc_notify_exit, proc);

 }
 
 int
 }
 
 int

-mac_lctx_label_externalize(struct label *label, char *elements,
-    char *outbuf, size_t outbuflen)
+mac_proc_check_suspend_resume(proc_t curp, int sr)

 {
 {

+       kauth_cred_t cred;

        int error;
 
        int error;
 

-       error = MAC_EXTERNALIZE(lctx, label, elements, outbuf, outbuflen);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
 

-       return (error);
+       cred = kauth_cred_proc_ref(curp);
+       MAC_CHECK(proc_check_suspend_resume, cred, curp, sr);
+       kauth_cred_unref(&cred);
+
+       return error;

 }
 
 int
 }
 
 int

-mac_lctx_label_internalize(struct label *label, char *string)
+mac_proc_check_ledger(proc_t curp, proc_t proc, int ledger_op)

 {
 {

-       int error;
-
-       error = MAC_INTERNALIZE(lctx, label, string);
+       kauth_cred_t cred;
+       int error = 0;

 
 

-       return (error);
-}
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
 

-void
-mac_lctx_label_update(struct lctx *l, struct label *newlabel)
-{
+       cred = kauth_cred_proc_ref(curp);
+       MAC_CHECK(proc_check_ledger, cred, proc, ledger_op);
+       kauth_cred_unref(&cred);

 
 

-       MAC_PERFORM(lctx_label_update, l, newlabel);
+       return error;

 }
 
 int
 }
 
 int

-mac_lctx_check_label_update(struct lctx *l, struct label *newlabel)
+mac_proc_check_proc_info(proc_t curp, proc_t target, int callnum, int flavor)

 {
 {

-       int error;
+       kauth_cred_t cred;
+       int error = 0;
+
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
 

-       MAC_CHECK(lctx_check_label_update, l, newlabel);
+       cred = kauth_cred_proc_ref(curp);
+       MAC_CHECK(proc_check_proc_info, cred, target, callnum, flavor);
+       kauth_cred_unref(&cred);

 
 

-       return (error);
+       return error;

 }
 }

-#endif /* LCTX */

 
 

-void
-mac_thread_userret(int code, int error, struct thread *thread)
+int
+mac_proc_check_get_cs_info(proc_t curp, proc_t target, unsigned int op)

 {
 {

+       kauth_cred_t cred;
+       int error = 0;
+
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }
+
+       cred = kauth_cred_proc_ref(curp);
+       MAC_CHECK(proc_check_get_cs_info, cred, target, op);
+       kauth_cred_unref(&cred);

 
 

-       if (mac_late)
-               MAC_PERFORM(thread_userret, code, error, thread);
+       return error;

 }
 
 int
 }
 
 int

-mac_proc_check_suspend_resume(proc_t curp, int sr)
+mac_proc_check_set_cs_info(proc_t curp, proc_t target, unsigned int op)

 {
        kauth_cred_t cred;
 {
        kauth_cred_t cred;

-       int error;
+       int error = 0;

 
 

-       if (!mac_proc_enforce ||
-           !mac_proc_check_enforce(curp, MAC_PROC_ENFORCE))
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_proc_enforce) {
+               return 0;
+       }
+#endif
+       if (!mac_proc_check_enforce(curp)) {
+               return 0;
+       }

 
        cred = kauth_cred_proc_ref(curp);
 
        cred = kauth_cred_proc_ref(curp);

-       MAC_CHECK(proc_check_suspend_resume, cred, curp, sr);
+       MAC_CHECK(proc_check_set_cs_info, cred, target, op);

        kauth_cred_unref(&cred);
 
        kauth_cred_unref(&cred);
 

-       return (error);
+       return error;

 }
 }