xnu-4903.270.47.tar.gz

[apple/xnu.git] / bsd / vm / vm_unix.c

diff --git a/bsd/vm/vm_unix.c b/bsd/vm/vm_unix.c
index 0190e70f73081b00b99d15b1e3cf600c18c2c991..596835593bea93f3a8e498f1d6cb4365e5d8c9b1 100644 (file)
--- a/bsd/vm/vm_unix.c
+++ b/bsd/vm/vm_unix.c
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2018 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,


@@ -22,10 +22,10 @@
  * 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@
  */

-/* 
+/*

  * Mach Operating System
  * Copyright (c) 1987 Carnegie-Mellon University
  * All rights reserved.  The CMU software License Agreement specifies
  * Mach Operating System
  * Copyright (c) 1987 Carnegie-Mellon University
  * All rights reserved.  The CMU software License Agreement specifies


@@ -37,16 +37,15 @@
  * is included in support of clause 2.2 (b) of the Apple Public License,
  * Version 2.0.
  */
  * is included in support of clause 2.2 (b) of the Apple Public License,
  * Version 2.0.
  */

-
-#include <meta_features.h>
+#include <vm/vm_options.h>

 
 #include <kern/task.h>
 #include <kern/thread.h>
 #include <kern/debug.h>
 
 #include <kern/task.h>
 #include <kern/thread.h>
 #include <kern/debug.h>

-#include <kern/lock.h>

 #include <kern/extmod_statistics.h>
 #include <mach/mach_traps.h>
 #include <mach/port.h>
 #include <kern/extmod_statistics.h>
 #include <mach/mach_traps.h>
 #include <mach/port.h>

+#include <mach/sdt.h>

 #include <mach/task.h>
 #include <mach/task_access.h>
 #include <mach/task_special_ports.h>
 #include <mach/task.h>
 #include <mach/task_access.h>
 #include <mach/task_special_ports.h>


@@ -77,6 +76,12 @@
 #include <sys/sysctl.h>
 #include <sys/cprotect.h>
 #include <sys/kpi_socket.h>
 #include <sys/sysctl.h>
 #include <sys/cprotect.h>
 #include <sys/kpi_socket.h>

+#include <sys/kas_info.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#if NECP
+#include <net/necp.h>
+#endif /* NECP */

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


@@ -87,35 +92,198 @@
 #include <vm/vm_kern.h>
 #include <vm/vm_pageout.h>
 
 #include <vm/vm_kern.h>
 #include <vm/vm_pageout.h>
 

-#include <machine/spl.h>
-

 #include <mach/shared_region.h>
 #include <vm/vm_shared_region.h>
 
 #include <vm/vm_protos.h>
 
 #include <mach/shared_region.h>
 #include <vm/vm_shared_region.h>
 
 #include <vm/vm_protos.h>
 

-#if CONFIG_FREEZE

 #include <sys/kern_memorystatus.h>
 #include <sys/kern_memorystatus.h>

+
+#if CONFIG_MACF
+#include <security/mac_framework.h>

 #endif
 
 #endif
 

+#if CONFIG_CSR
+#include <sys/csr.h>
+#endif /* CONFIG_CSR */

 
 

-int _shared_region_map( struct proc*, int, unsigned int, struct shared_file_mapping_np*, memory_object_control_t*, struct shared_file_mapping_np*); 
-int _shared_region_slide(uint32_t, mach_vm_offset_t, mach_vm_size_t, mach_vm_offset_t, mach_vm_size_t, memory_object_control_t);
+int _shared_region_map_and_slide(struct proc*, int, unsigned int, struct shared_file_mapping_np*, uint32_t, user_addr_t, user_addr_t);

 int shared_region_copyin_mappings(struct proc*, user_addr_t, unsigned int, struct shared_file_mapping_np *);
 
 int shared_region_copyin_mappings(struct proc*, user_addr_t, unsigned int, struct shared_file_mapping_np *);
 

-SYSCTL_INT(_vm, OID_AUTO, vm_debug_events, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_debug_events, 0, "");
+#if VM_MAP_DEBUG_APPLE_PROTECT
+SYSCTL_INT(_vm, OID_AUTO, map_debug_apple_protect, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_map_debug_apple_protect, 0, "");
+#endif /* VM_MAP_DEBUG_APPLE_PROTECT */
+
+#if VM_MAP_DEBUG_FOURK
+SYSCTL_INT(_vm, OID_AUTO, map_debug_fourk, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_map_debug_fourk, 0, "");
+#endif /* VM_MAP_DEBUG_FOURK */
+
+#if DEVELOPMENT || DEBUG
+
+static int
+sysctl_kmem_alloc_contig SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+       vm_offset_t     kaddr;
+       kern_return_t   kr;
+       int     error = 0;
+       int     size = 0;
+
+       error = sysctl_handle_int(oidp, &size, 0, req);
+       if (error || !req->newptr) {
+               return error;
+       }
+
+       kr = kmem_alloc_contig(kernel_map, &kaddr, (vm_size_t)size, 0, 0, 0, 0, VM_KERN_MEMORY_IOKIT);
+
+       if (kr == KERN_SUCCESS) {
+               kmem_free(kernel_map, kaddr, size);
+       }
+
+       return error;
+}
+
+SYSCTL_PROC(_vm, OID_AUTO, kmem_alloc_contig, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
+    0, 0, &sysctl_kmem_alloc_contig, "I", "");
+
+extern int vm_region_footprint;
+SYSCTL_INT(_vm, OID_AUTO, region_footprint, CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, &vm_region_footprint, 0, "");
+static int
+sysctl_vm_self_region_footprint SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2, oidp)
+       int     error = 0;
+       int     value;
+
+       value = task_self_region_footprint();
+       error = SYSCTL_OUT(req, &value, sizeof(int));
+       if (error) {
+               return error;
+       }
+
+       if (!req->newptr) {
+               return 0;
+       }
+
+       error = SYSCTL_IN(req, &value, sizeof(int));
+       if (error) {
+               return error;
+       }
+       task_self_region_footprint_set(value);
+       return 0;
+}
+SYSCTL_PROC(_vm, OID_AUTO, self_region_footprint, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, &sysctl_vm_self_region_footprint, "I", "");
+
+#endif /* DEVELOPMENT || DEBUG */
+
+
+#if CONFIG_EMBEDDED
+
+#if DEVELOPMENT || DEBUG
+extern int panic_on_unsigned_execute;
+SYSCTL_INT(_vm, OID_AUTO, panic_on_unsigned_execute, CTLFLAG_RW | CTLFLAG_LOCKED, &panic_on_unsigned_execute, 0, "");
+#endif /* DEVELOPMENT || DEBUG */
+
+extern int log_executable_mem_entry;
+extern int cs_executable_create_upl;
+extern int cs_executable_mem_entry;
+extern int cs_executable_wire;
+SYSCTL_INT(_vm, OID_AUTO, log_executable_mem_entry, CTLFLAG_RD | CTLFLAG_LOCKED, &log_executable_mem_entry, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, cs_executable_create_upl, CTLFLAG_RD | CTLFLAG_LOCKED, &cs_executable_create_upl, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, cs_executable_mem_entry, CTLFLAG_RD | CTLFLAG_LOCKED, &cs_executable_mem_entry, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, cs_executable_wire, CTLFLAG_RD | CTLFLAG_LOCKED, &cs_executable_wire, 0, "");
+#endif /* CONFIG_EMBEDDED */
+
+#if DEVELOPMENT || DEBUG
+extern int radar_20146450;
+SYSCTL_INT(_vm, OID_AUTO, radar_20146450, CTLFLAG_RW | CTLFLAG_LOCKED, &radar_20146450, 0, "");
+
+extern int macho_printf;
+SYSCTL_INT(_vm, OID_AUTO, macho_printf, CTLFLAG_RW | CTLFLAG_LOCKED, &macho_printf, 0, "");
+
+extern int apple_protect_pager_data_request_debug;
+SYSCTL_INT(_vm, OID_AUTO, apple_protect_pager_data_request_debug, CTLFLAG_RW | CTLFLAG_LOCKED, &apple_protect_pager_data_request_debug, 0, "");
+
+#if __arm__ || __arm64__
+/* These are meant to support the page table accounting unit test. */
+extern unsigned int arm_hardware_page_size;
+extern unsigned int arm_pt_desc_size;
+extern unsigned int arm_pt_root_size;
+extern unsigned int free_page_size_tt_count;
+extern unsigned int free_two_page_size_tt_count;
+extern unsigned int free_tt_count;
+extern unsigned int inuse_user_tteroot_count;
+extern unsigned int inuse_kernel_tteroot_count;
+extern unsigned int inuse_user_ttepages_count;
+extern unsigned int inuse_kernel_ttepages_count;
+extern unsigned int inuse_user_ptepages_count;
+extern unsigned int inuse_kernel_ptepages_count;
+SYSCTL_UINT(_vm, OID_AUTO, native_hw_pagesize, CTLFLAG_RD | CTLFLAG_LOCKED, &arm_hardware_page_size, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, arm_pt_desc_size, CTLFLAG_RD | CTLFLAG_LOCKED, &arm_pt_desc_size, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, arm_pt_root_size, CTLFLAG_RD | CTLFLAG_LOCKED, &arm_pt_root_size, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, free_1page_tte_root, CTLFLAG_RD | CTLFLAG_LOCKED, &free_page_size_tt_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, free_2page_tte_root, CTLFLAG_RD | CTLFLAG_LOCKED, &free_two_page_size_tt_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, free_tte_root, CTLFLAG_RD | CTLFLAG_LOCKED, &free_tt_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, user_tte_root, CTLFLAG_RD | CTLFLAG_LOCKED, &inuse_user_tteroot_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, kernel_tte_root, CTLFLAG_RD | CTLFLAG_LOCKED, &inuse_kernel_tteroot_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, user_tte_pages, CTLFLAG_RD | CTLFLAG_LOCKED, &inuse_user_ttepages_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, kernel_tte_pages, CTLFLAG_RD | CTLFLAG_LOCKED, &inuse_kernel_ttepages_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, user_pte_pages, CTLFLAG_RD | CTLFLAG_LOCKED, &inuse_user_ptepages_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, kernel_pte_pages, CTLFLAG_RD | CTLFLAG_LOCKED, &inuse_kernel_ptepages_count, 0, "");
+#endif /* __arm__ || __arm64__ */
+
+#if __arm64__
+extern int fourk_pager_data_request_debug;
+SYSCTL_INT(_vm, OID_AUTO, fourk_pager_data_request_debug, CTLFLAG_RW | CTLFLAG_LOCKED, &fourk_pager_data_request_debug, 0, "");
+#endif /* __arm64__ */
+#endif /* DEVELOPMENT || DEBUG */
+
+SYSCTL_INT(_vm, OID_AUTO, vm_do_collapse_compressor, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.do_collapse_compressor, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_do_collapse_compressor_pages, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.do_collapse_compressor_pages, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_do_collapse_terminate, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.do_collapse_terminate, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_do_collapse_terminate_failure, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.do_collapse_terminate_failure, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_should_cow_but_wired, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.should_cow_but_wired, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_create_upl_extra_cow, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.create_upl_extra_cow, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_create_upl_extra_cow_pages, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.create_upl_extra_cow_pages, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_create_upl_lookup_failure_write, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.create_upl_lookup_failure_write, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, vm_create_upl_lookup_failure_copy, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_counters.create_upl_lookup_failure_copy, 0, "");
+#if VM_SCAN_FOR_SHADOW_CHAIN
+static int vm_shadow_max_enabled = 0;    /* Disabled by default */
+extern int proc_shadow_max(void);
+static int
+vm_shadow_max SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2, oidp)
+       int value = 0;
+
+       if (vm_shadow_max_enabled) {
+               value = proc_shadow_max();
+       }
+
+       return SYSCTL_OUT(req, &value, sizeof(value));
+}
+SYSCTL_PROC(_vm, OID_AUTO, vm_shadow_max, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
+    0, 0, &vm_shadow_max, "I", "");

 
 

+SYSCTL_INT(_vm, OID_AUTO, vm_shadow_max_enabled, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_shadow_max_enabled, 0, "");

 
 

+#endif /* VM_SCAN_FOR_SHADOW_CHAIN */
+
+SYSCTL_INT(_vm, OID_AUTO, vm_debug_events, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_debug_events, 0, "");
+
+__attribute__((noinline)) int __KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__(
+       mach_port_t task_access_port, int32_t calling_pid, uint32_t calling_gid, int32_t target_pid);

 /*
  * Sysctl's related to data/stack execution.  See osfmk/vm/vm_map.c
  */
 
 /*
  * Sysctl's related to data/stack execution.  See osfmk/vm/vm_map.c
  */
 

-#ifndef SECURE_KERNEL
+#if DEVELOPMENT || DEBUG

 extern int allow_stack_exec, allow_data_exec;
 
 SYSCTL_INT(_vm, OID_AUTO, allow_stack_exec, CTLFLAG_RW | CTLFLAG_LOCKED, &allow_stack_exec, 0, "");
 SYSCTL_INT(_vm, OID_AUTO, allow_data_exec, CTLFLAG_RW | CTLFLAG_LOCKED, &allow_data_exec, 0, "");
 extern int allow_stack_exec, allow_data_exec;
 
 SYSCTL_INT(_vm, OID_AUTO, allow_stack_exec, CTLFLAG_RW | CTLFLAG_LOCKED, &allow_stack_exec, 0, "");
 SYSCTL_INT(_vm, OID_AUTO, allow_data_exec, CTLFLAG_RW | CTLFLAG_LOCKED, &allow_data_exec, 0, "");

-#endif /* !SECURE_KERNEL */
+
+#endif /* DEVELOPMENT || DEBUG */

 
 static const char *prot_values[] = {
        "none",
 
 static const char *prot_values[] = {
        "none",


@@ -131,80 +299,148 @@ static const char *prot_values[] = {
 void
 log_stack_execution_failure(addr64_t vaddr, vm_prot_t prot)
 {
 void
 log_stack_execution_failure(addr64_t vaddr, vm_prot_t prot)
 {

-       printf("Data/Stack execution not permitted: %s[pid %d] at virtual address 0x%qx, protections were %s\n", 
-               current_proc()->p_comm, current_proc()->p_pid, vaddr, prot_values[prot & VM_PROT_ALL]);
+       printf("Data/Stack execution not permitted: %s[pid %d] at virtual address 0x%qx, protections were %s\n",
+           current_proc()->p_comm, current_proc()->p_pid, vaddr, prot_values[prot & VM_PROT_ALL]);

 }
 
 }
 

+/*
+ * shared_region_unnest_logging: level of logging of unnesting events
+ * 0   - no logging
+ * 1   - throttled logging of unexpected unnesting events (default)
+ * 2   - unthrottled logging of unexpected unnesting events
+ * 3+  - unthrottled logging of all unnesting events
+ */

 int shared_region_unnest_logging = 1;
 
 SYSCTL_INT(_vm, OID_AUTO, shared_region_unnest_logging, CTLFLAG_RW | CTLFLAG_LOCKED,
 int shared_region_unnest_logging = 1;
 
 SYSCTL_INT(_vm, OID_AUTO, shared_region_unnest_logging, CTLFLAG_RW | CTLFLAG_LOCKED,

-          &shared_region_unnest_logging, 0, "");
+    &shared_region_unnest_logging, 0, "");

 
 int vm_shared_region_unnest_log_interval = 10;
 int shared_region_unnest_log_count_threshold = 5;
 
 
 int vm_shared_region_unnest_log_interval = 10;
 int shared_region_unnest_log_count_threshold = 5;
 

+/*
+ * Shared cache path enforcement.
+ */
+
+#ifndef CONFIG_EMBEDDED
+static int scdir_enforce = 1;
+static char scdir_path[] = "/var/db/dyld/";
+#else
+static int scdir_enforce = 0;
+static char scdir_path[] = "/System/Library/Caches/com.apple.dyld/";
+#endif
+
+#ifndef SECURE_KERNEL
+static int sysctl_scdir_enforce SYSCTL_HANDLER_ARGS
+{
+#if CONFIG_CSR
+       if (csr_check(CSR_ALLOW_UNRESTRICTED_FS) != 0) {
+               printf("Failed attempt to set vm.enforce_shared_cache_dir sysctl\n");
+               return EPERM;
+       }
+#endif /* CONFIG_CSR */
+       return sysctl_handle_int(oidp, arg1, arg2, req);
+}
+
+SYSCTL_PROC(_vm, OID_AUTO, enforce_shared_cache_dir, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &scdir_enforce, 0, sysctl_scdir_enforce, "I", "");
+#endif
+

 /* These log rate throttling state variables aren't thread safe, but
  * are sufficient unto the task.
  */
 /* These log rate throttling state variables aren't thread safe, but
  * are sufficient unto the task.
  */

-static int64_t last_unnest_log_time = 0; 
+static int64_t last_unnest_log_time = 0;

 static int shared_region_unnest_log_count = 0;
 
 static int shared_region_unnest_log_count = 0;
 

-void log_unnest_badness(vm_map_t m, vm_map_offset_t s, vm_map_offset_t e) {
-       struct timeval tv;
-       const char *pcommstr;
+void
+log_unnest_badness(
+       vm_map_t        m,
+       vm_map_offset_t s,
+       vm_map_offset_t e,
+       boolean_t       is_nested_map,
+       vm_map_offset_t lowest_unnestable_addr)
+{
+       struct timeval  tv;

 
 

-       if (shared_region_unnest_logging == 0)
+       if (shared_region_unnest_logging == 0) {

                return;
                return;

+       }

 
 

-       if (shared_region_unnest_logging == 1) {
+       if (shared_region_unnest_logging <= 2 &&
+           is_nested_map &&
+           s >= lowest_unnestable_addr) {
+               /*
+                * Unnesting of writable map entries is fine.
+                */
+               return;
+       }
+
+       if (shared_region_unnest_logging <= 1) {

                microtime(&tv);
                microtime(&tv);

-               if ((tv.tv_sec - last_unnest_log_time) < vm_shared_region_unnest_log_interval) {
-                       if (shared_region_unnest_log_count++ > shared_region_unnest_log_count_threshold)
+               if ((tv.tv_sec - last_unnest_log_time) <
+                   vm_shared_region_unnest_log_interval) {
+                       if (shared_region_unnest_log_count++ >
+                           shared_region_unnest_log_count_threshold) {

                                return;
                                return;

-               }
-               else {
+                       }
+               } else {

                        last_unnest_log_time = tv.tv_sec;
                        shared_region_unnest_log_count = 0;
                }
        }
 
                        last_unnest_log_time = tv.tv_sec;
                        shared_region_unnest_log_count = 0;
                }
        }
 

-       pcommstr = current_proc()->p_comm;
-
-       printf("%s (map: %p) triggered DYLD shared region unnest for map: %p, region 0x%qx->0x%qx. While not abnormal for debuggers, this increases system memory footprint until the target exits.\n", current_proc()->p_comm, get_task_map(current_proc()->task), m, (uint64_t)s, (uint64_t)e);
+       DTRACE_VM4(log_unnest_badness,
+           vm_map_t, m,
+           vm_map_offset_t, s,
+           vm_map_offset_t, e,
+           vm_map_offset_t, lowest_unnestable_addr);
+       printf("%s[%d] triggered unnest of range 0x%qx->0x%qx of DYLD shared region in VM map %p. While not abnormal for debuggers, this increases system memory footprint until the target exits.\n", current_proc()->p_comm, current_proc()->p_pid, (uint64_t)s, (uint64_t)e, (void *) VM_KERNEL_ADDRPERM(m));

 }
 
 int
 useracc(
 }
 
 int
 useracc(

-       user_addr_t     addr,
-       user_size_t     len,
-       int     prot)
+       user_addr_t     addr,
+       user_size_t     len,
+       int     prot)

 {
 {

-       return (vm_map_check_protection(
-                       current_map(),
-                       vm_map_trunc_page(addr), vm_map_round_page(addr+len),
-                       prot == B_READ ? VM_PROT_READ : VM_PROT_WRITE));
+       vm_map_t        map;
+
+       map = current_map();
+       return vm_map_check_protection(
+               map,
+               vm_map_trunc_page(addr,
+               vm_map_page_mask(map)),
+               vm_map_round_page(addr + len,
+               vm_map_page_mask(map)),
+               prot == B_READ ? VM_PROT_READ : VM_PROT_WRITE);

 }
 
 int
 vslock(
 }
 
 int
 vslock(

-       user_addr_t     addr,
-       user_size_t     len)
+       user_addr_t     addr,
+       user_size_t     len)

 {
 {

-       kern_return_t kret;
-       kret = vm_map_wire(current_map(), vm_map_trunc_page(addr),
-                       vm_map_round_page(addr+len), 
-                       VM_PROT_READ | VM_PROT_WRITE ,FALSE);
+       kern_return_t   kret;
+       vm_map_t        map;
+
+       map = current_map();
+       kret = vm_map_wire_kernel(map,
+           vm_map_trunc_page(addr,
+           vm_map_page_mask(map)),
+           vm_map_round_page(addr + len,
+           vm_map_page_mask(map)),
+           VM_PROT_READ | VM_PROT_WRITE, VM_KERN_MEMORY_BSD,
+           FALSE);

 
        switch (kret) {
        case KERN_SUCCESS:
 
        switch (kret) {
        case KERN_SUCCESS:

-               return (0);
+               return 0;

        case KERN_INVALID_ADDRESS:
        case KERN_NO_SPACE:
        case KERN_INVALID_ADDRESS:
        case KERN_NO_SPACE:

-               return (ENOMEM);
+               return ENOMEM;

        case KERN_PROTECTION_FAILURE:
        case KERN_PROTECTION_FAILURE:

-               return (EACCES);
+               return EACCES;

        default:
        default:

-               return (EINVAL);
+               return EINVAL;

        }
 }
 
        }
 }
 


@@ -215,40 +451,47 @@ vsunlock(
        __unused int dirtied)
 {
 #if FIXME  /* [ */
        __unused int dirtied)
 {
 #if FIXME  /* [ */

-       pmap_t          pmap;
-       vm_page_t       pg;
-       vm_map_offset_t vaddr;
-       ppnum_t         paddr;
+       pmap_t          pmap;
+       vm_page_t       pg;
+       vm_map_offset_t vaddr;
+       ppnum_t         paddr;

 #endif  /* FIXME ] */
 #endif  /* FIXME ] */

-       kern_return_t kret;
+       kern_return_t   kret;
+       vm_map_t        map;
+
+       map = current_map();

 
 #if FIXME  /* [ */
        if (dirtied) {
                pmap = get_task_pmap(current_task());
 
 #if FIXME  /* [ */
        if (dirtied) {
                pmap = get_task_pmap(current_task());

-               for (vaddr = vm_map_trunc_page(addr);
-                    vaddr < vm_map_round_page(addr+len);
-                               vaddr += PAGE_SIZE) {
+               for (vaddr = vm_map_trunc_page(addr, PAGE_MASK);
+                   vaddr < vm_map_round_page(addr + len, PAGE_MASK);
+                   vaddr += PAGE_SIZE) {

                        paddr = pmap_extract(pmap, vaddr);
                        pg = PHYS_TO_VM_PAGE(paddr);
                        vm_page_set_modified(pg);
                }
        }
 #endif  /* FIXME ] */
                        paddr = pmap_extract(pmap, vaddr);
                        pg = PHYS_TO_VM_PAGE(paddr);
                        vm_page_set_modified(pg);
                }
        }
 #endif  /* FIXME ] */

-#ifdef lint
+#ifdef  lint

        dirtied++;
        dirtied++;

-#endif /* lint */
-       kret = vm_map_unwire(current_map(), vm_map_trunc_page(addr),
-                               vm_map_round_page(addr+len), FALSE);
+#endif  /* lint */
+       kret = vm_map_unwire(map,
+           vm_map_trunc_page(addr,
+           vm_map_page_mask(map)),
+           vm_map_round_page(addr + len,
+           vm_map_page_mask(map)),
+           FALSE);

        switch (kret) {
        case KERN_SUCCESS:
        switch (kret) {
        case KERN_SUCCESS:

-               return (0);
+               return 0;

        case KERN_INVALID_ADDRESS:
        case KERN_NO_SPACE:
        case KERN_INVALID_ADDRESS:
        case KERN_NO_SPACE:

-               return (ENOMEM);
+               return ENOMEM;

        case KERN_PROTECTION_FAILURE:
        case KERN_PROTECTION_FAILURE:

-               return (EACCES);
+               return EACCES;

        default:
        default:

-               return (EINVAL);
+               return EINVAL;

        }
 }
 
        }
 }
 


@@ -258,9 +501,9 @@ subyte(
        int byte)
 {
        char character;
        int byte)
 {
        char character;

-       
+

        character = (char)byte;
        character = (char)byte;

-       return (copyout((void *)&(character), addr, sizeof(char)) == 0 ? 0 : -1);
+       return copyout((void *)&(character), addr, sizeof(char)) == 0 ? 0 : -1;

 }
 
 int
 }
 
 int


@@ -269,27 +512,31 @@ suibyte(
        int byte)
 {
        char character;
        int byte)
 {
        char character;

-       
+

        character = (char)byte;
        character = (char)byte;

-       return (copyout((void *)&(character), addr, sizeof(char)) == 0 ? 0 : -1);
+       return copyout((void *)&(character), addr, sizeof(char)) == 0 ? 0 : -1;

 }
 
 }
 

-int fubyte(user_addr_t addr)
+int
+fubyte(user_addr_t addr)

 {
        unsigned char byte;
 
 {
        unsigned char byte;
 

-       if (copyin(addr, (void *) &byte, sizeof(char)))
-               return(-1);
-       return(byte);
+       if (copyin(addr, (void *) &byte, sizeof(char))) {
+               return -1;
+       }
+       return byte;

 }
 
 }
 

-int fuibyte(user_addr_t addr)
+int
+fuibyte(user_addr_t addr)

 {
        unsigned char byte;
 
 {
        unsigned char byte;
 

-       if (copyin(addr, (void *) &(byte), sizeof(char)))
-               return(-1);
-       return(byte);
+       if (copyin(addr, (void *) &(byte), sizeof(char))) {
+               return -1;
+       }
+       return byte;

 }
 
 int
 }
 
 int


@@ -297,16 +544,18 @@ suword(
        user_addr_t addr,
        long word)
 {
        user_addr_t addr,
        long word)
 {

-       return (copyout((void *) &word, addr, sizeof(int)) == 0 ? 0 : -1);
+       return copyout((void *) &word, addr, sizeof(int)) == 0 ? 0 : -1;

 }
 
 }
 

-long fuword(user_addr_t addr)
+long
+fuword(user_addr_t addr)

 {
        long word = 0;
 
 {
        long word = 0;
 

-       if (copyin(addr, (void *) &word, sizeof(int)))
-               return(-1);
-       return(word);
+       if (copyin(addr, (void *) &word, sizeof(int))) {
+               return -1;
+       }
+       return word;

 }
 
 /* suiword and fuiword are the same as suword and fuword, respectively */
 }
 
 /* suiword and fuiword are the same as suword and fuword, respectively */


@@ -316,16 +565,18 @@ suiword(
        user_addr_t addr,
        long word)
 {
        user_addr_t addr,
        long word)
 {

-       return (copyout((void *) &word, addr, sizeof(int)) == 0 ? 0 : -1);
+       return copyout((void *) &word, addr, sizeof(int)) == 0 ? 0 : -1;

 }
 
 }
 

-long fuiword(user_addr_t addr)
+long
+fuiword(user_addr_t addr)

 {
        long word = 0;
 
 {
        long word = 0;
 

-       if (copyin(addr, (void *) &word, sizeof(int)))
-               return(-1);
-       return(word);
+       if (copyin(addr, (void *) &word, sizeof(int))) {
+               return -1;
+       }
+       return word;

 }
 
 /*
 }
 
 /*


@@ -335,11 +586,10 @@ long fuiword(user_addr_t addr)
 int
 sulong(user_addr_t addr, int64_t word)
 {
 int
 sulong(user_addr_t addr, int64_t word)
 {

-

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

-               return(copyout((void *)&word, addr, sizeof(word)) == 0 ? 0 : -1);
+               return copyout((void *)&word, addr, sizeof(word)) == 0 ? 0 : -1;

        } else {
        } else {

-               return(suiword(addr, (long)word));
+               return suiword(addr, (long)word);

        }
 }
 
        }
 }
 


@@ -349,22 +599,22 @@ fulong(user_addr_t addr)
        int64_t longword;
 
        if (IS_64BIT_PROCESS(current_proc())) {
        int64_t longword;
 
        if (IS_64BIT_PROCESS(current_proc())) {

-               if (copyin(addr, (void *)&longword, sizeof(longword)) != 0)
-                       return(-1);
-               return(longword);
+               if (copyin(addr, (void *)&longword, sizeof(longword)) != 0) {
+                       return -1;
+               }
+               return longword;

        } else {
        } else {

-               return((int64_t)fuiword(addr));
+               return (int64_t)fuiword(addr);

        }
 }
 
 int
 suulong(user_addr_t addr, uint64_t uword)
 {
        }
 }
 
 int
 suulong(user_addr_t addr, uint64_t uword)
 {

-

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

-               return(copyout((void *)&uword, addr, sizeof(uword)) == 0 ? 0 : -1);
+               return copyout((void *)&uword, addr, sizeof(uword)) == 0 ? 0 : -1;

        } else {
        } else {

-               return(suiword(addr, (uint32_t)uword));
+               return suiword(addr, (uint32_t)uword);

        }
 }
 
        }
 }
 


@@ -374,33 +624,34 @@ fuulong(user_addr_t addr)
        uint64_t ulongword;
 
        if (IS_64BIT_PROCESS(current_proc())) {
        uint64_t ulongword;
 
        if (IS_64BIT_PROCESS(current_proc())) {

-               if (copyin(addr, (void *)&ulongword, sizeof(ulongword)) != 0)
-                       return(-1ULL);
-               return(ulongword);
+               if (copyin(addr, (void *)&ulongword, sizeof(ulongword)) != 0) {
+                       return -1ULL;
+               }
+               return ulongword;

        } else {
        } else {

-               return((uint64_t)fuiword(addr));
+               return (uint64_t)fuiword(addr);

        }
 }
 
 int
 swapon(__unused proc_t procp, __unused struct swapon_args *uap, __unused int *retval)
 {
        }
 }
 
 int
 swapon(__unused proc_t procp, __unused struct swapon_args *uap, __unused int *retval)
 {

-       return(ENOTSUP);
+       return ENOTSUP;

 }
 
 /*
  * pid_for_task
  *
 }
 
 /*
  * pid_for_task
  *

- * Find the BSD process ID for the Mach task associated with the given Mach port 
+ * Find the BSD process ID for the Mach task associated with the given Mach port

  * name
  *
  * Parameters: args            User argument descriptor (see below)
  *
  * Indirect parameters:        args->t         Mach port name
  * name
  *
  * Parameters: args            User argument descriptor (see below)
  *
  * Indirect parameters:        args->t         Mach port name

- *                     args->pid       Process ID (returned value; see below)
+ *                      args->pid      Process ID (returned value; see below)

  *
  * Returns:    KERL_SUCCESS    Success
  *
  * Returns:    KERL_SUCCESS    Success

- *             KERN_FAILURE    Not success           
+ *              KERN_FAILURE   Not success

  *
  * Implicit returns: args->pid         Process ID
  *
  *
  * Implicit returns: args->pid         Process ID
  *


@@ -409,17 +660,17 @@ kern_return_t
 pid_for_task(
        struct pid_for_task_args *args)
 {
 pid_for_task(
        struct pid_for_task_args *args)
 {

-       mach_port_name_t        t = args->t;
-       user_addr_t             pid_addr  = args->pid;  
+       mach_port_name_t        t = args->t;
+       user_addr_t             pid_addr  = args->pid;

        proc_t p;
        proc_t p;

-       task_t          t1;
-       int     pid = -1;
-       kern_return_t   err = KERN_SUCCESS;
+       task_t          t1;
+       int     pid = -1;
+       kern_return_t   err = KERN_SUCCESS;

 
        AUDIT_MACH_SYSCALL_ENTER(AUE_PIDFORTASK);
        AUDIT_ARG(mach_port1, t);
 
 
        AUDIT_MACH_SYSCALL_ENTER(AUE_PIDFORTASK);
        AUDIT_ARG(mach_port1, t);
 

-       t1 = port_name_to_task(t);
+       t1 = port_name_to_task_inspect(t);

 
        if (t1 == TASK_NULL) {
                err = KERN_FAILURE;
 
        if (t1 == TASK_NULL) {
                err = KERN_FAILURE;


@@ -429,6 +680,9 @@ pid_for_task(
                if (p) {
                        pid  = proc_pid(p);
                        err = KERN_SUCCESS;
                if (p) {
                        pid  = proc_pid(p);
                        err = KERN_SUCCESS;

+               } else if (is_corpsetask(t1)) {
+                       pid = task_pid(t1);
+                       err = KERN_SUCCESS;

                } else {
                        err = KERN_FAILURE;
                }
                } else {
                        err = KERN_FAILURE;
                }


@@ -438,10 +692,10 @@ pftout:
        AUDIT_ARG(pid, pid);
        (void) copyout((char *) &pid, pid_addr, sizeof(int));
        AUDIT_MACH_SYSCALL_EXIT(err);
        AUDIT_ARG(pid, pid);
        (void) copyout((char *) &pid, pid_addr, sizeof(int));
        AUDIT_MACH_SYSCALL_EXIT(err);

-       return(err);
+       return err;

 }
 
 }
 

-/* 
+/*

  *
  * tfp_policy = KERN_TFP_POLICY_DENY; Deny Mode: None allowed except for self
  * tfp_policy = KERN_TFP_POLICY_DEFAULT; default mode: all posix checks and upcall via task port for authentication
  *
  * tfp_policy = KERN_TFP_POLICY_DENY; Deny Mode: None allowed except for self
  * tfp_policy = KERN_TFP_POLICY_DEFAULT; default mode: all posix checks and upcall via task port for authentication


@@ -453,7 +707,7 @@ static  int tfp_policy = KERN_TFP_POLICY_DEFAULT;
  *     Routine:        task_for_pid_posix_check
  *     Purpose:
  *                     Verify that the current process should be allowed to
  *     Routine:        task_for_pid_posix_check
  *     Purpose:
  *                     Verify that the current process should be allowed to

- *                     get the target process's task port. This is only 
+ *                     get the target process's task port. This is only

  *                     permitted if:
  *                     - The current process is root
  *                     OR all of the following are true:
  *                     permitted if:
  *                     - The current process is root
  *                     OR all of the following are true:


@@ -471,10 +725,10 @@ task_for_pid_posix_check(proc_t target)
 {
        kauth_cred_t targetcred, mycred;
        uid_t myuid;
 {
        kauth_cred_t targetcred, mycred;
        uid_t myuid;

-       int allowed; 
+       int allowed;

 
        /* No task_for_pid on bad targets */
 
        /* No task_for_pid on bad targets */

-       if (target == PROC_NULL || target->p_stat == SZOMB) {
+       if (target->p_stat == SZOMB) {

                return FALSE;
        }
 
                return FALSE;
        }
 


@@ -482,18 +736,20 @@ task_for_pid_posix_check(proc_t target)
        myuid = kauth_cred_getuid(mycred);
 
        /* If we're running as root, the check passes */
        myuid = kauth_cred_getuid(mycred);
 
        /* If we're running as root, the check passes */

-       if (kauth_cred_issuser(mycred))
+       if (kauth_cred_issuser(mycred)) {

                return TRUE;
                return TRUE;

+       }

 
        /* We're allowed to get our own task port */
 
        /* We're allowed to get our own task port */

-       if (target == current_proc())
+       if (target == current_proc()) {

                return TRUE;
                return TRUE;

+       }

 
 

-       /* 
+       /*

         * Under DENY, only root can get another proc's task port,
         * so no more checks are needed.
         */
         * Under DENY, only root can get another proc's task port,
         * so no more checks are needed.
         */

-       if (tfp_policy == KERN_TFP_POLICY_DENY) { 
+       if (tfp_policy == KERN_TFP_POLICY_DENY) {

                return FALSE;
        }
 
                return FALSE;
        }
 


@@ -501,16 +757,16 @@ task_for_pid_posix_check(proc_t target)
        allowed = TRUE;
 
        /* Do target's ruid, euid, and saved uid match my euid? */
        allowed = TRUE;
 
        /* Do target's ruid, euid, and saved uid match my euid? */

-       if ((kauth_cred_getuid(targetcred) != myuid) || 
-                       (kauth_cred_getruid(targetcred) != myuid) ||
-                       (kauth_cred_getsvuid(targetcred) != myuid)) {
+       if ((kauth_cred_getuid(targetcred) != myuid) ||
+           (kauth_cred_getruid(targetcred) != myuid) ||
+           (kauth_cred_getsvuid(targetcred) != myuid)) {

                allowed = FALSE;
                goto out;
        }
 
        /* Are target's groups a subset of my groups? */
        if (kauth_cred_gid_subset(targetcred, mycred, &allowed) ||
                allowed = FALSE;
                goto out;
        }
 
        /* Are target's groups a subset of my groups? */
        if (kauth_cred_gid_subset(targetcred, mycred, &allowed) ||

-                       allowed == 0) {
+           allowed == 0) {

                allowed = FALSE;
                goto out;
        }
                allowed = FALSE;
                goto out;
        }


@@ -520,12 +776,26 @@ task_for_pid_posix_check(proc_t target)
                allowed = FALSE;
                goto out;
        }
                allowed = FALSE;
                goto out;
        }

-       
+

 out:
        kauth_cred_unref(&targetcred);
        return allowed;
 }
 
 out:
        kauth_cred_unref(&targetcred);
        return allowed;
 }
 

+/*
+ *     __KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__
+ *
+ *     Description:    Waits for the user space daemon to respond to the request
+ *                     we made. Function declared non inline to be visible in
+ *                     stackshots and spindumps as well as debugging.
+ */
+__attribute__((noinline)) int
+__KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__(
+       mach_port_t task_access_port, int32_t calling_pid, uint32_t calling_gid, int32_t target_pid)
+{
+       return check_task_access(task_access_port, calling_pid, calling_gid, target_pid);
+}
+

 /*
  *     Routine:        task_for_pid
  *     Purpose:
 /*
  *     Routine:        task_for_pid
  *     Purpose:


@@ -543,13 +813,14 @@ kern_return_t
 task_for_pid(
        struct task_for_pid_args *args)
 {
 task_for_pid(
        struct task_for_pid_args *args)
 {

-       mach_port_name_t        target_tport = args->target_tport;
-       int                     pid = args->pid;
-       user_addr_t             task_addr = args->t;
-       proc_t                  p = PROC_NULL;
-       task_t                  t1 = TASK_NULL;
-       mach_port_name_t        tret = MACH_PORT_NULL;
-       ipc_port_t              tfpport;
+       mach_port_name_t        target_tport = args->target_tport;
+       int                     pid = args->pid;
+       user_addr_t             task_addr = args->t;
+       proc_t                  p = PROC_NULL;
+       task_t                  t1 = TASK_NULL;
+       task_t                  task = TASK_NULL;
+       mach_port_name_t        tret = MACH_PORT_NULL;
+       ipc_port_t              tfpport = MACH_PORT_NULL;

        void * sright;
        int error = 0;
 
        void * sright;
        int error = 0;
 


@@ -559,23 +830,27 @@ task_for_pid(
 
        /* Always check if pid == 0 */
        if (pid == 0) {
 
        /* Always check if pid == 0 */
        if (pid == 0) {

-               (void ) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
+               (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));

                AUDIT_MACH_SYSCALL_EXIT(KERN_FAILURE);
                AUDIT_MACH_SYSCALL_EXIT(KERN_FAILURE);

-               return(KERN_FAILURE);
+               return KERN_FAILURE;

        }
 
        t1 = port_name_to_task(target_tport);
        if (t1 == TASK_NULL) {
                (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
                AUDIT_MACH_SYSCALL_EXIT(KERN_FAILURE);
        }
 
        t1 = port_name_to_task(target_tport);
        if (t1 == TASK_NULL) {
                (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
                AUDIT_MACH_SYSCALL_EXIT(KERN_FAILURE);

-               return(KERN_FAILURE);
-       } 
+               return KERN_FAILURE;
+       }

 
 
        p = proc_find(pid);
 
 
        p = proc_find(pid);

+       if (p == PROC_NULL) {
+               error = KERN_FAILURE;
+               goto tfpout;
+       }
+

 #if CONFIG_AUDIT
 #if CONFIG_AUDIT

-       if (p != PROC_NULL)
-               AUDIT_ARG(process, p);
+       AUDIT_ARG(process, p);

 #endif
 
        if (!(task_for_pid_posix_check(p))) {
 #endif
 
        if (!(task_for_pid_posix_check(p))) {


@@ -583,56 +858,91 @@ task_for_pid(
                goto tfpout;
        }
 
                goto tfpout;
        }
 

-       if (p->task != TASK_NULL) {
-               /* If we aren't root and target's task access port is set... */
-               if (!kauth_cred_issuser(kauth_cred_get()) &&
-                       p != current_proc() &&
-                       (task_get_task_access_port(p->task, &tfpport) == 0) &&
-                       (tfpport != IPC_PORT_NULL)) {
+       if (p->task == TASK_NULL) {
+               error = KERN_SUCCESS;
+               goto tfpout;
+       }

 
 

-                       if (tfpport == IPC_PORT_DEAD) {
-                               error = KERN_PROTECTION_FAILURE;
-                               goto tfpout;
-                       }
+#if CONFIG_MACF
+       error = mac_proc_check_get_task(kauth_cred_get(), p);
+       if (error) {
+               error = KERN_FAILURE;
+               goto tfpout;
+       }
+#endif

 
 

-                       /* Call up to the task access server */
-                       error = check_task_access(tfpport, proc_selfpid(), kauth_getgid(), pid);
+       /* Grab a task reference since the proc ref might be dropped if an upcall to task access server is made */
+       task = p->task;
+       task_reference(task);
+
+       /* If we aren't root and target's task access port is set... */
+       if (!kauth_cred_issuser(kauth_cred_get()) &&
+           p != current_proc() &&
+           (task_get_task_access_port(task, &tfpport) == 0) &&
+           (tfpport != IPC_PORT_NULL)) {
+               if (tfpport == IPC_PORT_DEAD) {
+                       error = KERN_PROTECTION_FAILURE;
+                       goto tfpout;
+               }

 
 

-                       if (error != MACH_MSG_SUCCESS) {
-                               if (error == MACH_RCV_INTERRUPTED)
-                                       error = KERN_ABORTED;
-                               else
-                                       error = KERN_FAILURE;
-                               goto tfpout;
+               /*
+                * Drop the proc_find proc ref before making an upcall
+                * to taskgated, since holding a proc_find
+                * ref while making an upcall can cause deadlock.
+                */
+               proc_rele(p);
+               p = PROC_NULL;
+
+               /* Call up to the task access server */
+               error = __KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__(tfpport, proc_selfpid(), kauth_getgid(), pid);
+
+               if (error != MACH_MSG_SUCCESS) {
+                       if (error == MACH_RCV_INTERRUPTED) {
+                               error = KERN_ABORTED;
+                       } else {
+                               error = KERN_FAILURE;

                        }
                        }

-               }
-#if CONFIG_MACF
-               error = mac_proc_check_get_task(kauth_cred_get(), p);
-               if (error) {
-                       error = KERN_FAILURE;

                        goto tfpout;
                }
                        goto tfpout;
                }

-#endif
+       }
+
+       /* Grant task port access */
+       extmod_statistics_incr_task_for_pid(task);
+       sright = (void *) convert_task_to_port(task);
+
+       /* Check if the task has been corpsified */
+       if (is_corpsetask(task)) {
+               /* task ref consumed by convert_task_to_port */
+               task = TASK_NULL;
+               ipc_port_release_send(sright);
+               error = KERN_FAILURE;
+               goto tfpout;
+       }

 
 

-               /* Grant task port access */
-               task_reference(p->task);
-               extmod_statistics_incr_task_for_pid(p->task);
+       /* task ref consumed by convert_task_to_port */
+       task = TASK_NULL;
+       tret = ipc_port_copyout_send(
+               sright,
+               get_task_ipcspace(current_task()));

 
 

-               sright = (void *) convert_task_to_port(p->task);
-               tret = ipc_port_copyout_send(
-                               sright, 
-                               get_task_ipcspace(current_task()));
-       } 

        error = KERN_SUCCESS;
 
 tfpout:
        task_deallocate(t1);
        AUDIT_ARG(mach_port2, tret);
        (void) copyout((char *) &tret, task_addr, sizeof(mach_port_name_t));
        error = KERN_SUCCESS;
 
 tfpout:
        task_deallocate(t1);
        AUDIT_ARG(mach_port2, tret);
        (void) copyout((char *) &tret, task_addr, sizeof(mach_port_name_t));

-       if (p != PROC_NULL)
+
+       if (tfpport != IPC_PORT_NULL) {
+               ipc_port_release_send(tfpport);
+       }
+       if (task != TASK_NULL) {
+               task_deallocate(task);
+       }
+       if (p != PROC_NULL) {

                proc_rele(p);
                proc_rele(p);

+       }

        AUDIT_MACH_SYSCALL_EXIT(error);
        AUDIT_MACH_SYSCALL_EXIT(error);

-       return(error);
+       return error;

 }
 
 /*
 }
 
 /*


@@ -651,12 +961,12 @@ kern_return_t
 task_name_for_pid(
        struct task_name_for_pid_args *args)
 {
 task_name_for_pid(
        struct task_name_for_pid_args *args)
 {

-       mach_port_name_t        target_tport = args->target_tport;
-       int                     pid = args->pid;
-       user_addr_t             task_addr = args->t;
-       proc_t          p = PROC_NULL;
-       task_t          t1;
-       mach_port_name_t        tret;
+       mach_port_name_t        target_tport = args->target_tport;
+       int                     pid = args->pid;
+       user_addr_t             task_addr = args->t;
+       proc_t          p = PROC_NULL;
+       task_t          t1;
+       mach_port_name_t        tret;

        void * sright;
        int error = 0, refheld = 0;
        kauth_cred_t target_cred;
        void * sright;
        int error = 0, refheld = 0;
        kauth_cred_t target_cred;


@@ -669,8 +979,8 @@ task_name_for_pid(
        if (t1 == TASK_NULL) {
                (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
                AUDIT_MACH_SYSCALL_EXIT(KERN_FAILURE);
        if (t1 == TASK_NULL) {
                (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
                AUDIT_MACH_SYSCALL_EXIT(KERN_FAILURE);

-               return(KERN_FAILURE);
-       } 
+               return KERN_FAILURE;
+       }

 
        p = proc_find(pid);
        if (p != PROC_NULL) {
 
        p = proc_find(pid);
        if (p != PROC_NULL) {


@@ -680,24 +990,24 @@ task_name_for_pid(
 
                if ((p->p_stat != SZOMB)
                    && ((current_proc() == p)
 
                if ((p->p_stat != SZOMB)
                    && ((current_proc() == p)

-                       || kauth_cred_issuser(kauth_cred_get()) 
-                       || ((kauth_cred_getuid(target_cred) == kauth_cred_getuid(kauth_cred_get())) && 
-                           ((kauth_cred_getruid(target_cred) == kauth_getruid()))))) {
-
+                   || kauth_cred_issuser(kauth_cred_get())
+                   || ((kauth_cred_getuid(target_cred) == kauth_cred_getuid(kauth_cred_get())) &&
+                   ((kauth_cred_getruid(target_cred) == kauth_getruid()))))) {

                        if (p->task != TASK_NULL) {
                                task_reference(p->task);
 #if CONFIG_MACF
                        if (p->task != TASK_NULL) {
                                task_reference(p->task);
 #if CONFIG_MACF

-                               error = mac_proc_check_get_task_name(kauth_cred_get(),  p);
+                               error = mac_proc_check_get_task_name(kauth_cred_get(), p);

                                if (error) {
                                        task_deallocate(p->task);
                                        goto noperm;
                                }
 #endif
                                sright = (void *)convert_task_name_to_port(p->task);
                                if (error) {
                                        task_deallocate(p->task);
                                        goto noperm;
                                }
 #endif
                                sright = (void *)convert_task_name_to_port(p->task);

-                               tret = ipc_port_copyout_send(sright, 
-                                               get_task_ipcspace(current_task()));
-                       } else
+                               tret = ipc_port_copyout_send(sright,
+                                   get_task_ipcspace(current_task()));
+                       } else {

                                tret  = MACH_PORT_NULL;
                                tret  = MACH_PORT_NULL;

+                       }

 
                        AUDIT_ARG(mach_port2, tret);
                        (void) copyout((char *)&tret, task_addr, sizeof(mach_port_name_t));
 
                        AUDIT_ARG(mach_port2, tret);
                        (void) copyout((char *)&tret, task_addr, sizeof(mach_port_name_t));


@@ -710,26 +1020,28 @@ task_name_for_pid(
 #if CONFIG_MACF
 noperm:
 #endif
 #if CONFIG_MACF
 noperm:
 #endif

-    task_deallocate(t1);
+       task_deallocate(t1);

        tret = MACH_PORT_NULL;
        (void) copyout((char *) &tret, task_addr, sizeof(mach_port_name_t));
        error = KERN_FAILURE;
 tnfpout:
        tret = MACH_PORT_NULL;
        (void) copyout((char *) &tret, task_addr, sizeof(mach_port_name_t));
        error = KERN_FAILURE;
 tnfpout:

-       if (refheld != 0)
+       if (refheld != 0) {

                kauth_cred_unref(&target_cred);
                kauth_cred_unref(&target_cred);

-       if (p != PROC_NULL)
+       }
+       if (p != PROC_NULL) {

                proc_rele(p);
                proc_rele(p);

+       }

        AUDIT_MACH_SYSCALL_EXIT(error);
        AUDIT_MACH_SYSCALL_EXIT(error);

-       return(error);
+       return error;

 }
 
 kern_return_t
 pid_suspend(struct proc *p __unused, struct pid_suspend_args *args, int *ret)
 {
 }
 
 kern_return_t
 pid_suspend(struct proc *p __unused, struct pid_suspend_args *args, int *ret)
 {

-       task_t  target = NULL;
-       proc_t  targetproc = PROC_NULL;
-       int     pid = args->pid;
-       int     error = 0;
+       task_t  target = NULL;
+       proc_t  targetproc = PROC_NULL;
+       int     pid = args->pid;
+       int     error = 0;

 
 #if CONFIG_MACF
        error = mac_proc_check_suspend_resume(p, MAC_PROC_CHECK_SUSPEND);
 
 #if CONFIG_MACF
        error = mac_proc_check_suspend_resume(p, MAC_PROC_CHECK_SUSPEND);


@@ -745,6 +1057,11 @@ pid_suspend(struct proc *p __unused, struct pid_suspend_args *args, int *ret)
        }
 
        targetproc = proc_find(pid);
        }
 
        targetproc = proc_find(pid);

+       if (targetproc == PROC_NULL) {
+               error = ESRCH;
+               goto out;
+       }
+

        if (!task_for_pid_posix_check(targetproc)) {
                error = EPERM;
                goto out;
        if (!task_for_pid_posix_check(targetproc)) {
                error = EPERM;
                goto out;


@@ -757,23 +1074,23 @@ pid_suspend(struct proc *p __unused, struct pid_suspend_args *args, int *ret)
 
                /* If we aren't root and target's task access port is set... */
                if (!kauth_cred_issuser(kauth_cred_get()) &&
 
                /* If we aren't root and target's task access port is set... */
                if (!kauth_cred_issuser(kauth_cred_get()) &&

-                       targetproc != current_proc() &&
-                       (task_get_task_access_port(target, &tfpport) == 0) &&
-                       (tfpport != IPC_PORT_NULL)) {
-
+                   targetproc != current_proc() &&
+                   (task_get_task_access_port(target, &tfpport) == 0) &&
+                   (tfpport != IPC_PORT_NULL)) {

                        if (tfpport == IPC_PORT_DEAD) {
                                error = EACCES;
                                goto out;
                        }
 
                        /* Call up to the task access server */
                        if (tfpport == IPC_PORT_DEAD) {
                                error = EACCES;
                                goto out;
                        }
 
                        /* Call up to the task access server */

-                       error = check_task_access(tfpport, proc_selfpid(), kauth_getgid(), pid);
+                       error = __KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__(tfpport, proc_selfpid(), kauth_getgid(), pid);

 
                        if (error != MACH_MSG_SUCCESS) {
 
                        if (error != MACH_MSG_SUCCESS) {

-                               if (error == MACH_RCV_INTERRUPTED)
+                               if (error == MACH_RCV_INTERRUPTED) {

                                        error = EINTR;
                                        error = EINTR;

-                               else
+                               } else {

                                        error = EPERM;
                                        error = EPERM;

+                               }

                                goto out;
                        }
                }
                                goto out;
                        }
                }


@@ -781,7 +1098,7 @@ pid_suspend(struct proc *p __unused, struct pid_suspend_args *args, int *ret)
 #endif
 
        task_reference(target);
 #endif
 
        task_reference(target);

-       error = task_suspend(target);
+       error = task_pidsuspend(target);

        if (error) {
                if (error == KERN_INVALID_ARGUMENT) {
                        error = EINVAL;
        if (error) {
                if (error == KERN_INVALID_ARGUMENT) {
                        error = EINVAL;


@@ -789,15 +1106,18 @@ pid_suspend(struct proc *p __unused, struct pid_suspend_args *args, int *ret)
                        error = EPERM;
                }
        }
                        error = EPERM;
                }
        }

-       task_deallocate(target);
-
-#if CONFIG_FREEZE
-       kern_hibernation_on_pid_suspend(pid);
+#if CONFIG_MEMORYSTATUS
+       else {
+               memorystatus_on_suspend(targetproc);
+       }

 #endif
 
 #endif
 

+       task_deallocate(target);
+

 out:
 out:

-       if (targetproc != PROC_NULL)
+       if (targetproc != PROC_NULL) {

                proc_rele(targetproc);
                proc_rele(targetproc);

+       }

        *ret = error;
        return error;
 }
        *ret = error;
        return error;
 }


@@ -805,10 +1125,10 @@ out:
 kern_return_t
 pid_resume(struct proc *p __unused, struct pid_resume_args *args, int *ret)
 {
 kern_return_t
 pid_resume(struct proc *p __unused, struct pid_resume_args *args, int *ret)
 {

-       task_t  target = NULL;
-       proc_t  targetproc = PROC_NULL;
-       int     pid = args->pid;
-       int     error = 0;
+       task_t  target = NULL;
+       proc_t  targetproc = PROC_NULL;
+       int     pid = args->pid;
+       int     error = 0;

 
 #if CONFIG_MACF
        error = mac_proc_check_suspend_resume(p, MAC_PROC_CHECK_RESUME);
 
 #if CONFIG_MACF
        error = mac_proc_check_suspend_resume(p, MAC_PROC_CHECK_RESUME);


@@ -824,6 +1144,11 @@ pid_resume(struct proc *p __unused, struct pid_resume_args *args, int *ret)
        }
 
        targetproc = proc_find(pid);
        }
 
        targetproc = proc_find(pid);

+       if (targetproc == PROC_NULL) {
+               error = ESRCH;
+               goto out;
+       }
+

        if (!task_for_pid_posix_check(targetproc)) {
                error = EPERM;
                goto out;
        if (!task_for_pid_posix_check(targetproc)) {
                error = EPERM;
                goto out;


@@ -836,61 +1161,78 @@ pid_resume(struct proc *p __unused, struct pid_resume_args *args, int *ret)
 
                /* If we aren't root and target's task access port is set... */
                if (!kauth_cred_issuser(kauth_cred_get()) &&
 
                /* If we aren't root and target's task access port is set... */
                if (!kauth_cred_issuser(kauth_cred_get()) &&

-                       targetproc != current_proc() &&
-                       (task_get_task_access_port(target, &tfpport) == 0) &&
-                       (tfpport != IPC_PORT_NULL)) {
-
+                   targetproc != current_proc() &&
+                   (task_get_task_access_port(target, &tfpport) == 0) &&
+                   (tfpport != IPC_PORT_NULL)) {

                        if (tfpport == IPC_PORT_DEAD) {
                                error = EACCES;
                                goto out;
                        }
 
                        /* Call up to the task access server */
                        if (tfpport == IPC_PORT_DEAD) {
                                error = EACCES;
                                goto out;
                        }
 
                        /* Call up to the task access server */

-                       error = check_task_access(tfpport, proc_selfpid(), kauth_getgid(), pid);
+                       error = __KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__(tfpport, proc_selfpid(), kauth_getgid(), pid);

 
                        if (error != MACH_MSG_SUCCESS) {
 
                        if (error != MACH_MSG_SUCCESS) {

-                               if (error == MACH_RCV_INTERRUPTED)
+                               if (error == MACH_RCV_INTERRUPTED) {

                                        error = EINTR;
                                        error = EINTR;

-                               else
+                               } else {

                                        error = EPERM;
                                        error = EPERM;

+                               }

                                goto out;
                        }
                }
        }
 #endif
 
                                goto out;
                        }
                }
        }
 #endif
 

+#if CONFIG_EMBEDDED
+#if SOCKETS
+       resume_proc_sockets(targetproc);
+#endif /* SOCKETS */
+#endif /* CONFIG_EMBEDDED */
+

        task_reference(target);
 
        task_reference(target);
 

-#if CONFIG_FREEZE
-       kern_hibernation_on_pid_resume(pid, target);
+#if CONFIG_MEMORYSTATUS
+       memorystatus_on_resume(targetproc);

 #endif
 
 #endif
 

-       error = task_resume(target);
+       error = task_pidresume(target);

        if (error) {
                if (error == KERN_INVALID_ARGUMENT) {
                        error = EINVAL;
                } else {
        if (error) {
                if (error == KERN_INVALID_ARGUMENT) {
                        error = EINVAL;
                } else {

-                       error = EPERM;
+                       if (error == KERN_MEMORY_ERROR) {
+                               psignal(targetproc, SIGKILL);
+                               error = EIO;
+                       } else {
+                               error = EPERM;
+                       }

                }
        }
                }
        }

+

        task_deallocate(target);
 
 out:
        task_deallocate(target);
 
 out:

-       if (targetproc != PROC_NULL)
+       if (targetproc != PROC_NULL) {

                proc_rele(targetproc);
                proc_rele(targetproc);

+       }
+

        *ret = error;
        return error;
        *ret = error;
        return error;

-
-       return 0;

 }
 
 #if CONFIG_EMBEDDED
 }
 
 #if CONFIG_EMBEDDED

+/*
+ * Freeze the specified process (provided in args->pid), or find and freeze a PID.
+ * When a process is specified, this call is blocking, otherwise we wake up the
+ * freezer thread and do not block on a process being frozen.
+ */

 kern_return_t
 pid_hibernate(struct proc *p __unused, struct pid_hibernate_args *args, int *ret)
 {
 kern_return_t
 pid_hibernate(struct proc *p __unused, struct pid_hibernate_args *args, int *ret)
 {

-       int     error = 0;
-       proc_t  targetproc = PROC_NULL;
-       int     pid = args->pid;
+       int     error = 0;
+       proc_t  targetproc = PROC_NULL;
+       int     pid = args->pid;

 
 #ifndef CONFIG_FREEZE
        #pragma unused(pid)
 
 #ifndef CONFIG_FREEZE
        #pragma unused(pid)


@@ -905,50 +1247,143 @@ pid_hibernate(struct proc *p __unused, struct pid_hibernate_args *args, int *ret
 #endif
 
        /*
 #endif
 
        /*

-        * The only accepted pid value here is currently -1, since we just kick off the hibernation thread
-        * here - individual ids aren't required. However, it's intended that that this call is to change
-        * in the future to initiate hibernation of individual processes. In anticipation, we'll obtain the
-        * process handle for potentially valid values and call task_for_pid_posix_check(); this way, everything
-        * is validated correctly and set for further refactoring. See <rdar://problem/7839708> for more details.
+        * If a pid has been provided, we obtain the process handle and call task_for_pid_posix_check().

         */
         */

+

        if (pid >= 0) {
                targetproc = proc_find(pid);
        if (pid >= 0) {
                targetproc = proc_find(pid);

+
+               if (targetproc == PROC_NULL) {
+                       error = ESRCH;
+                       goto out;
+               }
+

                if (!task_for_pid_posix_check(targetproc)) {
                        error = EPERM;
                        goto out;
                }
        }
 
                if (!task_for_pid_posix_check(targetproc)) {
                        error = EPERM;
                        goto out;
                }
        }
 

-       if (pid == -1) {
-               kern_hibernation_on_pid_hibernate(pid);
+       if (pid == -2) {
+               vm_pageout_anonymous_pages();
+       } else if (pid == -1) {
+               memorystatus_on_inactivity(targetproc);

        } else {
        } else {

-               error = EPERM;
+               error = memorystatus_freeze_process_sync(targetproc);

        }
 
 out:
 
 #endif /* CONFIG_FREEZE */
 
        }
 
 out:
 
 #endif /* CONFIG_FREEZE */
 

-       if (targetproc != PROC_NULL)
+       if (targetproc != PROC_NULL) {

                proc_rele(targetproc);
                proc_rele(targetproc);

+       }

        *ret = error;
        return error;
 }
        *ret = error;
        return error;
 }

+#endif /* CONFIG_EMBEDDED */
+
+#if SOCKETS
+int
+networking_memstatus_callout(proc_t p, uint32_t status)
+{
+       struct filedesc *fdp;
+       int i;
+
+       /*
+        * proc list lock NOT held
+        * proc lock NOT held
+        * a reference on the proc has been held / shall be dropped by the caller.
+        */
+       LCK_MTX_ASSERT(proc_list_mlock, LCK_MTX_ASSERT_NOTOWNED);
+       LCK_MTX_ASSERT(&p->p_mlock, LCK_MTX_ASSERT_NOTOWNED);
+
+       proc_fdlock(p);
+       fdp = p->p_fd;
+       for (i = 0; i < fdp->fd_nfiles; i++) {
+               struct fileproc *fp;
+
+               fp = fdp->fd_ofiles[i];
+               if (fp == NULL || (fdp->fd_ofileflags[i] & UF_RESERVED) != 0) {
+                       continue;
+               }
+               switch (FILEGLOB_DTYPE(fp->f_fglob)) {
+#if NECP
+               case DTYPE_NETPOLICY:
+                       necp_fd_memstatus(p, status,
+                           (struct necp_fd_data *)fp->f_fglob->fg_data);
+                       break;
+#endif /* NECP */
+               default:
+                       break;
+               }
+       }
+       proc_fdunlock(p);
+
+       return 1;
+}
+
+
+static int
+networking_defunct_callout(proc_t p, void *arg)
+{
+       struct pid_shutdown_sockets_args *args = arg;
+       int pid = args->pid;
+       int level = args->level;
+       struct filedesc *fdp;
+       int i;
+
+       proc_fdlock(p);
+       fdp = p->p_fd;
+       for (i = 0; i < fdp->fd_nfiles; i++) {
+               struct fileproc *fp = fdp->fd_ofiles[i];
+               struct fileglob *fg;
+
+               if (fp == NULL || (fdp->fd_ofileflags[i] & UF_RESERVED) != 0) {
+                       continue;
+               }
+
+               fg = fp->f_fglob;
+               switch (FILEGLOB_DTYPE(fg)) {
+               case DTYPE_SOCKET: {
+                       struct socket *so = (struct socket *)fg->fg_data;
+                       if (p->p_pid == pid || so->last_pid == pid ||
+                           ((so->so_flags & SOF_DELEGATED) && so->e_pid == pid)) {
+                               /* Call networking stack with socket and level */
+                               (void) socket_defunct(p, so, level);
+                       }
+                       break;
+               }
+#if NECP
+               case DTYPE_NETPOLICY:
+                       /* first pass: defunct necp and get stats for ntstat */
+                       if (p->p_pid == pid) {
+                               necp_fd_defunct(p,
+                                   (struct necp_fd_data *)fg->fg_data);
+                       }
+                       break;
+#endif /* NECP */
+               default:
+                       break;
+               }
+       }
+
+       proc_fdunlock(p);
+
+       return PROC_RETURNED;
+}

 
 int
 pid_shutdown_sockets(struct proc *p __unused, struct pid_shutdown_sockets_args *args, int *ret)
 {
 
 int
 pid_shutdown_sockets(struct proc *p __unused, struct pid_shutdown_sockets_args *args, int *ret)
 {

-       int                             error = 0;
-       proc_t                          targetproc = PROC_NULL;
-       struct filedesc         *fdp;
-       struct fileproc         *fp;
-       int                             pid = args->pid;
-       int                                     level = args->level;
-       int                                     i;
+       int                             error = 0;
+       proc_t                          targetproc = PROC_NULL;
+       int                             pid = args->pid;
+       int                             level = args->level;

 
        if (level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_SVC &&
 
        if (level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_SVC &&

-               level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_ALL)
-       {
+           level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_ALL) {

                error = EINVAL;
                goto out;
        }
                error = EINVAL;
                goto out;
        }


@@ -962,65 +1397,56 @@ pid_shutdown_sockets(struct proc *p __unused, struct pid_shutdown_sockets_args *
 #endif
 
        targetproc = proc_find(pid);
 #endif
 
        targetproc = proc_find(pid);

-       if (!task_for_pid_posix_check(targetproc)) {
-               error = EPERM;
+       if (targetproc == PROC_NULL) {
+               error = ESRCH;

                goto out;
        }
 
                goto out;
        }
 

-       proc_fdlock(targetproc);
-       fdp = targetproc->p_fd;
-
-       for (i = 0; i < fdp->fd_nfiles; i++) {
-               struct socket *sockp;
-
-               fp = fdp->fd_ofiles[i];
-               if (fp == NULL || (fdp->fd_ofileflags[i] & UF_RESERVED) != 0 ||
-                       fp->f_fglob->fg_type != DTYPE_SOCKET)
-               {
-                       continue;
-               }
-
-               sockp = (struct socket *)fp->f_fglob->fg_data;
-
-               /* Call networking stack with socket and level */
-               (void) socket_defunct(targetproc, sockp, level);
+       if (!task_for_pid_posix_check(targetproc)) {
+               error = EPERM;
+               goto out;

        }
 
        }
 

-       proc_fdunlock(targetproc);
+       proc_iterate(PROC_ALLPROCLIST | PROC_NOWAITTRANS,
+           networking_defunct_callout, args, NULL, NULL);

 
 out:
 
 out:

-       if (targetproc != PROC_NULL)
+       if (targetproc != PROC_NULL) {

                proc_rele(targetproc);
                proc_rele(targetproc);

+       }

        *ret = error;
        return error;
 }
        *ret = error;
        return error;
 }

-#endif /* CONFIG_EMBEDDED */
+
+#endif /* SOCKETS */

 
 static int
 sysctl_settfp_policy(__unused struct sysctl_oid *oidp, void *arg1,
     __unused int arg2, struct sysctl_req *req)
 {
 
 static int
 sysctl_settfp_policy(__unused struct sysctl_oid *oidp, void *arg1,
     __unused int arg2, struct sysctl_req *req)
 {

-    int error = 0;
+       int error = 0;

        int new_value;
 
        int new_value;
 

-    error = SYSCTL_OUT(req, arg1, sizeof(int));
-    if (error || req->newptr == USER_ADDR_NULL)
-        return(error);
+       error = SYSCTL_OUT(req, arg1, sizeof(int));
+       if (error || req->newptr == USER_ADDR_NULL) {
+               return error;
+       }

 
 

-       if (!is_suser())
-               return(EPERM);
+       if (!kauth_cred_issuser(kauth_cred_get())) {
+               return EPERM;
+       }

 
        if ((error = SYSCTL_IN(req, &new_value, sizeof(int)))) {
                goto out;
        }
 
        if ((error = SYSCTL_IN(req, &new_value, sizeof(int)))) {
                goto out;
        }

-       if ((new_value == KERN_TFP_POLICY_DENY) 
-               || (new_value == KERN_TFP_POLICY_DEFAULT))
-                       tfp_policy = new_value;
-       else
-                       error = EINVAL;         
+       if ((new_value == KERN_TFP_POLICY_DENY)
+           || (new_value == KERN_TFP_POLICY_DEFAULT)) {
+               tfp_policy = new_value;
+       } else {
+               error = EINVAL;
+       }

 out:
 out:

-    return(error);
-
+       return error;

 }
 
 #if defined(SECURE_KERNEL)
 }
 
 #if defined(SECURE_KERNEL)


@@ -1033,14 +1459,14 @@ SYSCTL_INT(_kern, OID_AUTO, secure_kernel, CTLFLAG_RD | CTLFLAG_LOCKED, &kern_se
 
 SYSCTL_NODE(_kern, KERN_TFP, tfp, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "tfp");
 SYSCTL_PROC(_kern_tfp, KERN_TFP_POLICY, policy, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
 
 SYSCTL_NODE(_kern, KERN_TFP, tfp, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "tfp");
 SYSCTL_PROC(_kern_tfp, KERN_TFP_POLICY, policy, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,

-    &tfp_policy, sizeof(uint32_t), &sysctl_settfp_policy ,"I","policy");
+    &tfp_policy, sizeof(uint32_t), &sysctl_settfp_policy, "I", "policy");

 
 SYSCTL_INT(_vm, OID_AUTO, shared_region_trace_level, CTLFLAG_RW | CTLFLAG_LOCKED,
 
 SYSCTL_INT(_vm, OID_AUTO, shared_region_trace_level, CTLFLAG_RW | CTLFLAG_LOCKED,

-          &shared_region_trace_level, 0, "");
+    &shared_region_trace_level, 0, "");

 SYSCTL_INT(_vm, OID_AUTO, shared_region_version, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_INT(_vm, OID_AUTO, shared_region_version, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &shared_region_version, 0, "");
+    &shared_region_version, 0, "");

 SYSCTL_INT(_vm, OID_AUTO, shared_region_persistence, CTLFLAG_RW | CTLFLAG_LOCKED,
 SYSCTL_INT(_vm, OID_AUTO, shared_region_persistence, CTLFLAG_RW | CTLFLAG_LOCKED,

-          &shared_region_persistence, 0, "");
+    &shared_region_persistence, 0, "");

 
 /*
  * shared_region_check_np:
 
 /*
  * shared_region_check_np:


@@ -1070,41 +1496,43 @@ SYSCTL_INT(_vm, OID_AUTO, shared_region_persistence, CTLFLAG_RW | CTLFLAG_LOCKED
  */
 int
 shared_region_check_np(
  */
 int
 shared_region_check_np(

-       __unused struct proc                    *p,
-       struct shared_region_check_np_args      *uap,
-       __unused int                            *retvalp)
+       __unused struct proc                    *p,
+       struct shared_region_check_np_args      *uap,
+       __unused int                            *retvalp)

 {
 {

-       vm_shared_region_t      shared_region;
-       mach_vm_offset_t        start_address;
-       int                     error;
-       kern_return_t           kr;
+       vm_shared_region_t      shared_region;
+       mach_vm_offset_t        start_address = 0;
+       int                     error;
+       kern_return_t           kr;

 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] -> check_np(0x%llx)\n",
 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] -> check_np(0x%llx)\n",

-                current_thread(), p->p_pid, p->p_comm,
-                (uint64_t)uap->start_address));
+               (void *)VM_KERNEL_ADDRPERM(current_thread()),
+               p->p_pid, p->p_comm,
+               (uint64_t)uap->start_address));

 
        /* retrieve the current tasks's shared region */
        shared_region = vm_shared_region_get(current_task());
        if (shared_region != NULL) {
                /* retrieve address of its first mapping... */
                kr = vm_shared_region_start_address(shared_region,
 
        /* retrieve the current tasks's shared region */
        shared_region = vm_shared_region_get(current_task());
        if (shared_region != NULL) {
                /* retrieve address of its first mapping... */
                kr = vm_shared_region_start_address(shared_region,

-                                                   &start_address);
+                   &start_address);

                if (kr != KERN_SUCCESS) {
                        error = ENOMEM;
                } else {
                        /* ... and give it to the caller */
                        error = copyout(&start_address,
                if (kr != KERN_SUCCESS) {
                        error = ENOMEM;
                } else {
                        /* ... and give it to the caller */
                        error = copyout(&start_address,

-                                       (user_addr_t) uap->start_address,
-                                       sizeof (start_address));
+                           (user_addr_t) uap->start_address,
+                           sizeof(start_address));

                        if (error) {
                                SHARED_REGION_TRACE_ERROR(
                                        ("shared_region: %p [%d(%s)] "
                        if (error) {
                                SHARED_REGION_TRACE_ERROR(
                                        ("shared_region: %p [%d(%s)] "

-                                        "check_np(0x%llx) "
-                                        "copyout(0x%llx) error %d\n",
-                                        current_thread(), p->p_pid, p->p_comm,
-                                        (uint64_t)uap->start_address, (uint64_t)start_address,
-                                        error));
+                                       "check_np(0x%llx) "
+                                       "copyout(0x%llx) error %d\n",
+                                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                                       p->p_pid, p->p_comm,
+                                       (uint64_t)uap->start_address, (uint64_t)start_address,
+                                       error));

                        }
                }
                vm_shared_region_deallocate(shared_region);
                        }
                }
                vm_shared_region_deallocate(shared_region);


@@ -1115,8 +1543,9 @@ shared_region_check_np(
 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] check_np(0x%llx) <- 0x%llx %d\n",
 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] check_np(0x%llx) <- 0x%llx %d\n",

-                current_thread(), p->p_pid, p->p_comm,
-                (uint64_t)uap->start_address, (uint64_t)start_address, error));
+               (void *)VM_KERNEL_ADDRPERM(current_thread()),
+               p->p_pid, p->p_comm,
+               (uint64_t)uap->start_address, (uint64_t)start_address, error));

 
        return error;
 }
 
        return error;
 }


@@ -1124,25 +1553,26 @@ shared_region_check_np(
 
 int
 shared_region_copyin_mappings(
 
 int
 shared_region_copyin_mappings(

-               struct proc                     *p,
-               user_addr_t                     user_mappings,
-               unsigned int                    mappings_count,
-               struct shared_file_mapping_np   *mappings)
+       struct proc                     *p,
+       user_addr_t                     user_mappings,
+       unsigned int                    mappings_count,
+       struct shared_file_mapping_np   *mappings)

 {
 {

-       int             error = 0;
-       vm_size_t       mappings_size = 0;
+       int             error = 0;
+       vm_size_t       mappings_size = 0;

 
        /* get the list of mappings the caller wants us to establish */
 
        /* get the list of mappings the caller wants us to establish */

-       mappings_size = (vm_size_t) (mappings_count * sizeof (mappings[0]));
+       mappings_size = (vm_size_t) (mappings_count * sizeof(mappings[0]));

        error = copyin(user_mappings,
        error = copyin(user_mappings,

-                      mappings,
-                      mappings_size);
+           mappings,
+           mappings_size);

        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(): "
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(): "

-                        "copyin(0x%llx, %d) failed (error=%d)\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        (uint64_t)user_mappings, mappings_count, error));
+                       "copyin(0x%llx, %d) failed (error=%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (uint64_t)user_mappings, mappings_count, error));

        }
        return error;
 }
        }
        return error;
 }


@@ -1157,60 +1587,69 @@ shared_region_copyin_mappings(
  * requiring any further setup.
  */
 int
  * requiring any further setup.
  */
 int

-_shared_region_map(
-       struct proc                             *p,
-       int                                     fd,
-       uint32_t                                mappings_count,
-       struct shared_file_mapping_np           *mappings,
-       memory_object_control_t                 *sr_file_control,
-       struct shared_file_mapping_np           *mapping_to_slide)
+_shared_region_map_and_slide(
+       struct proc                             *p,
+       int                                     fd,
+       uint32_t                                mappings_count,
+       struct shared_file_mapping_np           *mappings,
+       uint32_t                                slide,
+       user_addr_t                             slide_start,
+       user_addr_t                             slide_size)

 {
 {

-       int                             error;
-       kern_return_t                   kr;
-       struct fileproc                 *fp;
-       struct vnode                    *vp, *root_vp;
-       struct vnode_attr               va;
-       off_t                           fs;
-       memory_object_size_t            file_size;
-       vm_prot_t                       maxprot = VM_PROT_ALL;
-       memory_object_control_t         file_control;
-       struct vm_shared_region         *shared_region;
+       int                             error;
+       kern_return_t                   kr;
+       struct fileproc                 *fp;
+       struct vnode                    *vp, *root_vp, *scdir_vp;
+       struct vnode_attr               va;
+       off_t                           fs;
+       memory_object_size_t            file_size;
+#if CONFIG_MACF
+       vm_prot_t                       maxprot = VM_PROT_ALL;
+#endif
+       memory_object_control_t         file_control;
+       struct vm_shared_region         *shared_region;
+       uint32_t                        i;

 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] -> map\n",
 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] -> map\n",

-                current_thread(), p->p_pid, p->p_comm));
+               (void *)VM_KERNEL_ADDRPERM(current_thread()),
+               p->p_pid, p->p_comm));

 
        shared_region = NULL;
        fp = NULL;
        vp = NULL;
 
        shared_region = NULL;
        fp = NULL;
        vp = NULL;

+       scdir_vp = NULL;

 
        /* get file structure from file descriptor */
        error = fp_lookup(p, fd, &fp, 0);
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "
 
        /* get file structure from file descriptor */
        error = fp_lookup(p, fd, &fp, 0);
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "

-                        "fd=%d lookup failed (error=%d)\n",
-                        current_thread(), p->p_pid, p->p_comm, fd, error));
+                       "fd=%d lookup failed (error=%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm, fd, error));

                goto done;
        }
 
        /* make sure we're attempting to map a vnode */
                goto done;
        }
 
        /* make sure we're attempting to map a vnode */

-       if (fp->f_fglob->fg_type != DTYPE_VNODE) {
+       if (FILEGLOB_DTYPE(fp->f_fglob) != DTYPE_VNODE) {

                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "

-                        "fd=%d not a vnode (type=%d)\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        fd, fp->f_fglob->fg_type));
+                       "fd=%d not a vnode (type=%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       fd, FILEGLOB_DTYPE(fp->f_fglob)));

                error = EINVAL;
                goto done;
        }
 
        /* we need at least read permission on the file */
                error = EINVAL;
                goto done;
        }
 
        /* we need at least read permission on the file */

-       if (! (fp->f_fglob->fg_flag & FREAD)) {
+       if (!(fp->f_fglob->fg_flag & FREAD)) {

                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "

-                        "fd=%d not readable\n",
-                        current_thread(), p->p_pid, p->p_comm, fd));
+                       "fd=%d not readable\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm, fd));

                error = EPERM;
                goto done;
        }
                error = EPERM;
                goto done;
        }


@@ -1220,8 +1659,9 @@ _shared_region_map(
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map: "

-                        "fd=%d getwithref failed (error=%d)\n",
-                        current_thread(), p->p_pid, p->p_comm, fd, error));
+                       "fd=%d getwithref failed (error=%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm, fd, error));

                goto done;
        }
        vp = (struct vnode *) fp->f_fglob->fg_data;
                goto done;
        }
        vp = (struct vnode *) fp->f_fglob->fg_data;


@@ -1230,33 +1670,25 @@ _shared_region_map(
        if (vp->v_type != VREG) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
        if (vp->v_type != VREG) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "not a file (type=%d)\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name, vp->v_type));
+                       "not a file (type=%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp),
+                       vp->v_name, vp->v_type));

                error = EINVAL;
                goto done;
        }
 
 #if CONFIG_MACF
                error = EINVAL;
                goto done;
        }
 
 #if CONFIG_MACF

+       /* pass in 0 for the offset argument because AMFI does not need the offset
+        *       of the shared cache */

        error = mac_file_check_mmap(vfs_context_ucred(vfs_context_current()),
        error = mac_file_check_mmap(vfs_context_ucred(vfs_context_current()),

-                       fp->f_fglob, VM_PROT_ALL, MAP_FILE, &maxprot);
+           fp->f_fglob, VM_PROT_ALL, MAP_FILE, 0, &maxprot);

        if (error) {
                goto done;
        }
 #endif /* MAC */
 
        if (error) {
                goto done;
        }
 #endif /* MAC */
 

-#if CONFIG_PROTECT
-       /* check for content protection access */
-       {
-       void *cnode;
-       if ((cnode = cp_get_protected_cnode(vp)) != NULL) {
-               error = cp_handle_vnop(cnode, CP_READ_ACCESS | CP_WRITE_ACCESS);
-               if (error) 
-                       goto done;
-       }
-       }
-#endif /* CONFIG_PROTECT */
-

        /* make sure vnode is on the process's root volume */
        root_vp = p->p_fd->fd_rdir;
        if (root_vp == NULL) {
        /* make sure vnode is on the process's root volume */
        root_vp = p->p_fd->fd_rdir;
        if (root_vp == NULL) {


@@ -1272,9 +1704,10 @@ _shared_region_map(
        if (vp->v_mount != root_vp->v_mount) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
        if (vp->v_mount != root_vp->v_mount) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "not on process's root volume\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name));
+                       "not on process's root volume\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name));

                error = EPERM;
                goto done;
        }
                error = EPERM;
                goto done;
        }


@@ -1286,29 +1719,63 @@ _shared_region_map(
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "vnode_getattr(%p) failed (error=%d)\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name, vp, error));
+                       "vnode_getattr(%p) failed (error=%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name,
+                       (void *)VM_KERNEL_ADDRPERM(vp), error));

                goto done;
        }
        if (va.va_uid != 0) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
                goto done;
        }
        if (va.va_uid != 0) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "owned by uid=%d instead of 0\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name, va.va_uid));
+                       "owned by uid=%d instead of 0\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp),
+                       vp->v_name, va.va_uid));

                error = EPERM;
                goto done;
        }
 
                error = EPERM;
                goto done;
        }
 

+       if (scdir_enforce) {
+               /* get vnode for scdir_path */
+               error = vnode_lookup(scdir_path, 0, &scdir_vp, vfs_context_current());
+               if (error) {
+                       SHARED_REGION_TRACE_ERROR(
+                               ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+                               "vnode_lookup(%s) failed (error=%d)\n",
+                               (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                               p->p_pid, p->p_comm,
+                               (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name,
+                               scdir_path, error));
+                       goto done;
+               }
+
+               /* ensure parent is scdir_vp */
+               if (vnode_parent(vp) != scdir_vp) {
+                       SHARED_REGION_TRACE_ERROR(
+                               ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+                               "shared cache file not in %s\n",
+                               (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                               p->p_pid, p->p_comm,
+                               (void *)VM_KERNEL_ADDRPERM(vp),
+                               vp->v_name, scdir_path));
+                       error = EPERM;
+                       goto done;
+               }
+       }
+

        /* get vnode size */
        error = vnode_size(vp, &fs, vfs_context_current());
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
        /* get vnode size */
        error = vnode_size(vp, &fs, vfs_context_current());
        if (error) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "vnode_size(%p) failed (error=%d)\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name, vp, error));
+                       "vnode_size(%p) failed (error=%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name,
+                       (void *)VM_KERNEL_ADDRPERM(vp), error));

                goto done;
        }
        file_size = fs;
                goto done;
        }
        file_size = fs;


@@ -1318,44 +1785,77 @@ _shared_region_map(
        if (file_control == MEMORY_OBJECT_CONTROL_NULL) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
        if (file_control == MEMORY_OBJECT_CONTROL_NULL) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "no memory object\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name));
+                       "no memory object\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name));

                error = EINVAL;
                goto done;
        }
 
                error = EINVAL;
                goto done;
        }
 

-       if (sr_file_control != NULL) {
-               *sr_file_control = file_control;
+       /* check that the mappings are properly covered by code signatures */
+       if (!cs_system_enforcement()) {
+               /* code signing is not enforced: no need to check */
+       } else {
+               for (i = 0; i < mappings_count; i++) {
+                       if (mappings[i].sfm_init_prot & VM_PROT_ZF) {
+                               /* zero-filled mapping: not backed by the file */
+                               continue;
+                       }
+                       if (ubc_cs_is_range_codesigned(vp,
+                           mappings[i].sfm_file_offset,
+                           mappings[i].sfm_size)) {
+                               /* this mapping is fully covered by code signatures */
+                               continue;
+                       }
+                       SHARED_REGION_TRACE_ERROR(
+                               ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+                               "mapping #%d/%d [0x%llx:0x%llx:0x%llx:0x%x:0x%x] "
+                               "is not code-signed\n",
+                               (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                               p->p_pid, p->p_comm,
+                               (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name,
+                               i, mappings_count,
+                               mappings[i].sfm_address,
+                               mappings[i].sfm_size,
+                               mappings[i].sfm_file_offset,
+                               mappings[i].sfm_max_prot,
+                               mappings[i].sfm_init_prot));
+                       error = EINVAL;
+                       goto done;
+               }

        }
        }

-                        
-

 
        /* get the process's shared region (setup in vm_map_exec()) */
 
        /* get the process's shared region (setup in vm_map_exec()) */

-       shared_region = vm_shared_region_get(current_task());
+       shared_region = vm_shared_region_trim_and_get(current_task());

        if (shared_region == NULL) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
        if (shared_region == NULL) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "no shared region\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name));
+                       "no shared region\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name));
+               error = EINVAL;

                goto done;
        }
 
        /* map the file into that shared region's submap */
        kr = vm_shared_region_map_file(shared_region,
                goto done;
        }
 
        /* map the file into that shared region's submap */
        kr = vm_shared_region_map_file(shared_region,

-                                      mappings_count,
-                                      mappings,
-                                      file_control,
-                                      file_size,
-                                      (void *) p->p_fd->fd_rdir,
-                                      mapping_to_slide);
+           mappings_count,
+           mappings,
+           file_control,
+           file_size,
+           (void *) p->p_fd->fd_rdir,
+           slide,
+           slide_start,
+           slide_size);

        if (kr != KERN_SUCCESS) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
        if (kr != KERN_SUCCESS) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "

-                        "vm_shared_region_map_file() failed kr=0x%x\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        vp, vp->v_name, kr));
+                       "vm_shared_region_map_file() failed kr=0x%x\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name, kr));

                switch (kr) {
                case KERN_INVALID_ADDRESS:
                        error = EFAULT;
                switch (kr) {
                case KERN_INVALID_ADDRESS:
                        error = EFAULT;


@@ -1384,7 +1884,7 @@ _shared_region_map(
        vnode_unlock(vp);
 
        /* update the vnode's access time */
        vnode_unlock(vp);
 
        /* update the vnode's access time */

-       if (! (vnode_vfsvisflags(vp) & MNT_NOATIME)) {
+       if (!(vnode_vfsvisflags(vp) & MNT_NOATIME)) {

                VATTR_INIT(&va);
                nanotime(&va.va_access_time);
                VATTR_SET_ACTIVE(&va, va_access_time);
                VATTR_INIT(&va);
                nanotime(&va.va_access_time);
                VATTR_SET_ACTIVE(&va, va_access_time);


@@ -1410,6 +1910,10 @@ done:
                fp_drop(p, fd, fp, 0);
                fp = NULL;
        }
                fp_drop(p, fd, fp, 0);
                fp = NULL;
        }

+       if (scdir_vp != NULL) {
+               (void)vnode_put(scdir_vp);
+               scdir_vp = NULL;
+       }

 
        if (shared_region != NULL) {
                vm_shared_region_deallocate(shared_region);
 
        if (shared_region != NULL) {
                vm_shared_region_deallocate(shared_region);


@@ -1417,144 +1921,95 @@ done:
 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] <- map\n",
 
        SHARED_REGION_TRACE_DEBUG(
                ("shared_region: %p [%d(%s)] <- map\n",

-                current_thread(), p->p_pid, p->p_comm));
+               (void *)VM_KERNEL_ADDRPERM(current_thread()),
+               p->p_pid, p->p_comm));

 
        return error;
 }
 
 int
 
        return error;
 }
 
 int

-_shared_region_slide(uint32_t slide,
-                       mach_vm_offset_t        entry_start_address,
-                       mach_vm_size_t          entry_size,
-                       mach_vm_offset_t        slide_start,
-                       mach_vm_size_t          slide_size,
-                       memory_object_control_t sr_file_control)
+shared_region_map_and_slide_np(
+       struct proc                             *p,
+       struct shared_region_map_and_slide_np_args      *uap,
+       __unused int                                    *retvalp)

 {
 {

-       void *slide_info_entry = NULL;
-       int                     error;
+       struct shared_file_mapping_np   *mappings;
+       unsigned int                    mappings_count = uap->count;
+       kern_return_t                   kr = KERN_SUCCESS;
+       uint32_t                        slide = uap->slide;

 
 

-       if((error = vm_shared_region_slide_init(slide_size, entry_start_address, entry_size, slide, sr_file_control))) {
-               printf("slide_info initialization failed with kr=%d\n", error);
-               goto done;
-       }
+#define SFM_MAX_STACK   8
+       struct shared_file_mapping_np   stack_mappings[SFM_MAX_STACK];

 
 

-       slide_info_entry = vm_shared_region_get_slide_info_entry();
-       if (slide_info_entry == NULL){
-               error = EFAULT;
-       } else {        
-               error = copyin(slide_start,
-                              slide_info_entry,
-                              (vm_size_t)slide_size);
-       }
-       if (error) {
+       /* Is the process chrooted?? */
+       if (p->p_fd->fd_rdir != NULL) {
+               kr = EINVAL;

                goto done;
        }
                goto done;
        }

- 
-       if (vm_shared_region_slide_sanity_check() != KERN_SUCCESS) {
-               error = EFAULT; 
-               printf("Sanity Check failed for slide_info\n");
-       } else {
-#if DEBUG
-               printf("Succesfully init slide_info with start_address: %p region_size: %ld slide_header_size: %ld\n",
-                               (void*)(uintptr_t)entry_start_address, 
-                               (unsigned long)entry_size, 
-                               (unsigned long)slide_size);
-#endif
-       }
-done:
-       return error;
-}
-
-int
-shared_region_map_and_slide_np(
-       struct proc                             *p,
-       struct shared_region_map_and_slide_np_args      *uap,
-       __unused int                                    *retvalp)
-{
-       struct shared_file_mapping_np   mapping_to_slide;
-       struct shared_file_mapping_np   *mappings;
-       unsigned int mappings_count = uap->count;
-
-       memory_object_control_t         sr_file_control;
-       kern_return_t                   kr = KERN_SUCCESS;
-       uint32_t                        slide = uap->slide;
-       
-#define SFM_MAX_STACK  8
-       struct shared_file_mapping_np   stack_mappings[SFM_MAX_STACK];

 
        if ((kr = vm_shared_region_sliding_valid(slide)) != KERN_SUCCESS) {
                if (kr == KERN_INVALID_ARGUMENT) {
                        /*
 
        if ((kr = vm_shared_region_sliding_valid(slide)) != KERN_SUCCESS) {
                if (kr == KERN_INVALID_ARGUMENT) {
                        /*

-                        * This will happen if we request sliding again 
+                        * This will happen if we request sliding again

                         * with the same slide value that was used earlier
                         * with the same slide value that was used earlier

-                        * for the very first sliding. We continue through
-                        * to the mapping layer. This is so that we can be
-                        * absolutely certain that the same mappings have
-                        * been requested.
+                        * for the very first sliding.

                         */
                        kr = KERN_SUCCESS;
                         */
                        kr = KERN_SUCCESS;

-               } else {
-                       goto done;

                }
                }

+               goto done;

        }
 
        if (mappings_count == 0) {
                SHARED_REGION_TRACE_INFO(
                        ("shared_region: %p [%d(%s)] map(): "
        }
 
        if (mappings_count == 0) {
                SHARED_REGION_TRACE_INFO(
                        ("shared_region: %p [%d(%s)] map(): "

-                        "no mappings\n",
-                        current_thread(), p->p_pid, p->p_comm));
-               kr = 0; /* no mappings: we're done ! */
+                       "no mappings\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm));
+               kr = 0; /* no mappings: we're done ! */

                goto done;
        } else if (mappings_count <= SFM_MAX_STACK) {
                mappings = &stack_mappings[0];
        } else {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(): "
                goto done;
        } else if (mappings_count <= SFM_MAX_STACK) {
                mappings = &stack_mappings[0];
        } else {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(): "

-                        "too many mappings (%d)\n",
-                        current_thread(), p->p_pid, p->p_comm,
-                        mappings_count));
+                       "too many mappings (%d)\n",
+                       (void *)VM_KERNEL_ADDRPERM(current_thread()),
+                       p->p_pid, p->p_comm,
+                       mappings_count));

                kr = KERN_FAILURE;
                goto done;
        }
 
                kr = KERN_FAILURE;
                goto done;
        }
 

-       if ( (kr = shared_region_copyin_mappings(p, uap->mappings, uap->count, mappings))) {
+       if ((kr = shared_region_copyin_mappings(p, uap->mappings, uap->count, mappings))) {

                goto done;
        }
 
 
                goto done;
        }
 
 

-       kr = _shared_region_map(p, uap->fd, mappings_count, mappings, &sr_file_control, &mapping_to_slide);
+       kr = _shared_region_map_and_slide(p, uap->fd, mappings_count, mappings,
+           slide,
+           uap->slide_start, uap->slide_size);

        if (kr != KERN_SUCCESS) {
                return kr;
        }
 
        if (kr != KERN_SUCCESS) {
                return kr;
        }
 

-       if (slide) {
-               kr = _shared_region_slide(slide, 
-                               mapping_to_slide.sfm_file_offset, 
-                               mapping_to_slide.sfm_size, 
-                               uap->slide_start, 
-                               uap->slide_size, 
-                               sr_file_control);
-               if (kr  != KERN_SUCCESS) {
-                       vm_shared_region_undo_mappings(NULL, 0, mappings, mappings_count);
-                       return kr;
-               }
-       }

 done:
        return kr;
 }
 
 /* sysctl overflow room */
 
 done:
        return kr;
 }
 
 /* sysctl overflow room */
 

+SYSCTL_INT(_vm, OID_AUTO, pagesize, CTLFLAG_RD | CTLFLAG_LOCKED,
+    (int *) &page_size, 0, "vm page size");
+

 /* vm_page_free_target is provided as a makeshift solution for applications that want to
 /* vm_page_free_target is provided as a makeshift solution for applications that want to

-       allocate buffer space, possibly purgeable memory, but not cause inactive pages to be
-       reclaimed. It allows the app to calculate how much memory is free outside the free target. */
-extern unsigned int    vm_page_free_target;
-SYSCTL_INT(_vm, OID_AUTO, vm_page_free_target, CTLFLAG_RD | CTLFLAG_LOCKED, 
-                  &vm_page_free_target, 0, "Pageout daemon free target");
+ *       allocate buffer space, possibly purgeable memory, but not cause inactive pages to be
+ *       reclaimed. It allows the app to calculate how much memory is free outside the free target. */
+extern unsigned int     vm_page_free_target;
+SYSCTL_INT(_vm, OID_AUTO, vm_page_free_target, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_page_free_target, 0, "Pageout daemon free target");

 
 

-extern unsigned int    vm_memory_pressure;

 SYSCTL_INT(_vm, OID_AUTO, memory_pressure, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_INT(_vm, OID_AUTO, memory_pressure, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_memory_pressure, 0, "Memory pressure indicator");
+    &vm_pageout_state.vm_memory_pressure, 0, "Memory pressure indicator");

 
 static int
 vm_ctl_page_free_wanted SYSCTL_HANDLER_ARGS
 
 static int
 vm_ctl_page_free_wanted SYSCTL_HANDLER_ARGS


@@ -1563,45 +2018,198 @@ vm_ctl_page_free_wanted SYSCTL_HANDLER_ARGS
        unsigned int page_free_wanted;
 
        page_free_wanted = mach_vm_ctl_page_free_wanted();
        unsigned int page_free_wanted;
 
        page_free_wanted = mach_vm_ctl_page_free_wanted();

-       return SYSCTL_OUT(req, &page_free_wanted, sizeof (page_free_wanted));
+       return SYSCTL_OUT(req, &page_free_wanted, sizeof(page_free_wanted));

 }
 SYSCTL_PROC(_vm, OID_AUTO, page_free_wanted,
 }
 SYSCTL_PROC(_vm, OID_AUTO, page_free_wanted,

-           CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
-           0, 0, vm_ctl_page_free_wanted, "I", "");
+    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
+    0, 0, vm_ctl_page_free_wanted, "I", "");

 
 

-extern unsigned int    vm_page_purgeable_count;
+extern unsigned int     vm_page_purgeable_count;

 SYSCTL_INT(_vm, OID_AUTO, page_purgeable_count, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_INT(_vm, OID_AUTO, page_purgeable_count, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_purgeable_count, 0, "Purgeable page count");
+    &vm_page_purgeable_count, 0, "Purgeable page count");

 
 

-extern unsigned int    vm_page_purgeable_wired_count;
+extern unsigned int     vm_page_purgeable_wired_count;

 SYSCTL_INT(_vm, OID_AUTO, page_purgeable_wired_count, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_INT(_vm, OID_AUTO, page_purgeable_wired_count, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_purgeable_wired_count, 0, "Wired purgeable page count");
+    &vm_page_purgeable_wired_count, 0, "Wired purgeable page count");
+
+#if DEVELOPMENT || DEBUG
+extern uint64_t get_pages_grabbed_count(void);
+
+static int
+pages_grabbed SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2, oidp)
+       uint64_t value = get_pages_grabbed_count();
+       return SYSCTL_OUT(req, &value, sizeof(value));
+}
+
+SYSCTL_PROC(_vm, OID_AUTO, pages_grabbed, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
+    0, 0, &pages_grabbed, "QU", "Total pages grabbed");
+SYSCTL_ULONG(_vm, OID_AUTO, pages_freed, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_vminfo.vm_page_pages_freed, "Total pages freed");
+
+SYSCTL_INT(_vm, OID_AUTO, pageout_purged_objects, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_purged_objects, 0, "System purged object count");
+SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_busy, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_cleaned_busy, 0, "Cleaned pages busy (deactivated)");
+SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_nolock, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_cleaned_nolock, 0, "Cleaned pages no-lock (deactivated)");
+
+SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_volatile_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_cleaned_volatile_reactivated, 0, "Cleaned pages volatile reactivated");
+SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_fault_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_cleaned_fault_reactivated, 0, "Cleaned pages fault reactivated");
+SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_cleaned_reactivated, 0, "Cleaned pages reactivated");         /* sum of all reactivated AND busy and nolock (even though those actually get reDEactivated */
+SYSCTL_ULONG(_vm, OID_AUTO, pageout_cleaned, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_vminfo.vm_pageout_freed_cleaned, "Cleaned pages freed");
+SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_reference_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_cleaned_reference_reactivated, 0, "Cleaned pages reference reactivated");
+SYSCTL_UINT(_vm, OID_AUTO, pageout_enqueued_cleaned, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_pageout_debug.vm_pageout_enqueued_cleaned, 0, "");         /* sum of next two */
+#endif
+
+extern int madvise_free_debug;
+SYSCTL_INT(_vm, OID_AUTO, madvise_free_debug, CTLFLAG_RW | CTLFLAG_LOCKED,
+    &madvise_free_debug, 0, "zero-fill on madvise(MADV_FREE*)");

 
 SYSCTL_INT(_vm, OID_AUTO, page_reusable_count, CTLFLAG_RD | CTLFLAG_LOCKED,
 
 SYSCTL_INT(_vm, OID_AUTO, page_reusable_count, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.reusable_count, 0, "Reusable page count");
+    &vm_page_stats_reusable.reusable_count, 0, "Reusable page count");

 SYSCTL_QUAD(_vm, OID_AUTO, reusable_success, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, reusable_success, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.reusable_pages_success, "");
+    &vm_page_stats_reusable.reusable_pages_success, "");

 SYSCTL_QUAD(_vm, OID_AUTO, reusable_failure, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, reusable_failure, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.reusable_pages_failure, "");
-SYSCTL_QUAD(_vm, OID_AUTO, reusable_shared, CTLFLAG_RD | CTLFLAG_LOCKED,
-          &vm_page_stats_reusable.reusable_pages_shared, "");
+    &vm_page_stats_reusable.reusable_pages_failure, "");
+SYSCTL_QUAD(_vm, OID_AUTO, reusable_pages_shared, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_page_stats_reusable.reusable_pages_shared, "");

 SYSCTL_QUAD(_vm, OID_AUTO, all_reusable_calls, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, all_reusable_calls, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.all_reusable_calls, "");
+    &vm_page_stats_reusable.all_reusable_calls, "");

 SYSCTL_QUAD(_vm, OID_AUTO, partial_reusable_calls, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, partial_reusable_calls, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.partial_reusable_calls, "");
+    &vm_page_stats_reusable.partial_reusable_calls, "");

 SYSCTL_QUAD(_vm, OID_AUTO, reuse_success, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, reuse_success, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.reuse_pages_success, "");
+    &vm_page_stats_reusable.reuse_pages_success, "");

 SYSCTL_QUAD(_vm, OID_AUTO, reuse_failure, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, reuse_failure, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.reuse_pages_failure, "");
+    &vm_page_stats_reusable.reuse_pages_failure, "");

 SYSCTL_QUAD(_vm, OID_AUTO, all_reuse_calls, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, all_reuse_calls, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.all_reuse_calls, "");
+    &vm_page_stats_reusable.all_reuse_calls, "");

 SYSCTL_QUAD(_vm, OID_AUTO, partial_reuse_calls, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, partial_reuse_calls, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.partial_reuse_calls, "");
+    &vm_page_stats_reusable.partial_reuse_calls, "");

 SYSCTL_QUAD(_vm, OID_AUTO, can_reuse_success, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, can_reuse_success, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.can_reuse_success, "");
+    &vm_page_stats_reusable.can_reuse_success, "");

 SYSCTL_QUAD(_vm, OID_AUTO, can_reuse_failure, CTLFLAG_RD | CTLFLAG_LOCKED,
 SYSCTL_QUAD(_vm, OID_AUTO, can_reuse_failure, CTLFLAG_RD | CTLFLAG_LOCKED,

-          &vm_page_stats_reusable.can_reuse_failure, "");
+    &vm_page_stats_reusable.can_reuse_failure, "");
+SYSCTL_QUAD(_vm, OID_AUTO, reusable_reclaimed, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_page_stats_reusable.reusable_reclaimed, "");
+SYSCTL_QUAD(_vm, OID_AUTO, reusable_nonwritable, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_page_stats_reusable.reusable_nonwritable, "");
+SYSCTL_QUAD(_vm, OID_AUTO, reusable_shared, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_page_stats_reusable.reusable_shared, "");
+SYSCTL_QUAD(_vm, OID_AUTO, free_shared, CTLFLAG_RD | CTLFLAG_LOCKED,
+    &vm_page_stats_reusable.free_shared, "");
+
+
+extern unsigned int vm_page_free_count, vm_page_speculative_count;
+SYSCTL_UINT(_vm, OID_AUTO, page_free_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_free_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_speculative_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_speculative_count, 0, "");
+
+extern unsigned int vm_page_cleaned_count;
+SYSCTL_UINT(_vm, OID_AUTO, page_cleaned_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_cleaned_count, 0, "Cleaned queue size");
+
+extern unsigned int vm_page_pageable_internal_count, vm_page_pageable_external_count;
+SYSCTL_UINT(_vm, OID_AUTO, page_pageable_internal_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_pageable_internal_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_pageable_external_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_pageable_external_count, 0, "");
+
+/* pageout counts */
+SYSCTL_UINT(_vm, OID_AUTO, pageout_inactive_clean, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_state.vm_pageout_inactive_clean, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, pageout_inactive_used, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_state.vm_pageout_inactive_used, 0, "");
+
+SYSCTL_ULONG(_vm, OID_AUTO, pageout_inactive_dirty_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_inactive_dirty_internal, "");
+SYSCTL_ULONG(_vm, OID_AUTO, pageout_inactive_dirty_external, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_inactive_dirty_external, "");
+SYSCTL_ULONG(_vm, OID_AUTO, pageout_speculative_clean, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_freed_speculative, "");
+SYSCTL_ULONG(_vm, OID_AUTO, pageout_freed_external, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_freed_external, "");
+SYSCTL_ULONG(_vm, OID_AUTO, pageout_freed_speculative, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_freed_speculative, "");
+SYSCTL_ULONG(_vm, OID_AUTO, pageout_freed_cleaned, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_freed_cleaned, "");
+
+
+/* counts of pages prefaulted when entering a memory object */
+extern int64_t vm_prefault_nb_pages, vm_prefault_nb_bailout;
+SYSCTL_QUAD(_vm, OID_AUTO, prefault_nb_pages, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_prefault_nb_pages, "");
+SYSCTL_QUAD(_vm, OID_AUTO, prefault_nb_bailout, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_prefault_nb_bailout, "");
+
+#if defined (__x86_64__)
+extern unsigned int vm_clump_promote_threshold;
+SYSCTL_UINT(_vm, OID_AUTO, vm_clump_promote_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_clump_promote_threshold, 0, "clump size threshold for promotes");
+#if DEVELOPMENT || DEBUG
+extern unsigned long vm_clump_stats[];
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats1, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[1], "free page allocations from clump of 1 page");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats2, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[2], "free page allocations from clump of 2 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats3, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[3], "free page allocations from clump of 3 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats4, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[4], "free page allocations from clump of 4 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats5, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[5], "free page allocations from clump of 5 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats6, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[6], "free page allocations from clump of 6 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats7, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[7], "free page allocations from clump of 7 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats8, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[8], "free page allocations from clump of 8 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats9, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[9], "free page allocations from clump of 9 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats10, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[10], "free page allocations from clump of 10 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats11, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[11], "free page allocations from clump of 11 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats12, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[12], "free page allocations from clump of 12 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats13, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[13], "free page allocations from clump of 13 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats14, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[14], "free page allocations from clump of 14 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats15, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[15], "free page allocations from clump of 15 pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_stats16, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_stats[16], "free page allocations from clump of 16 pages");
+extern unsigned long vm_clump_allocs, vm_clump_inserts, vm_clump_inrange, vm_clump_promotes;
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_alloc, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_allocs, "free page allocations");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_inserts, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_inserts, "free page insertions");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_inrange, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_inrange, "free page insertions that are part of vm_pages");
+SYSCTL_LONG(_vm, OID_AUTO, vm_clump_promotes, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_clump_promotes, "pages promoted to head");
+#endif  /* if DEVELOPMENT || DEBUG */
+#endif  /* #if defined (__x86_64__) */
+
+#if CONFIG_SECLUDED_MEMORY
+
+SYSCTL_UINT(_vm, OID_AUTO, num_tasks_can_use_secluded_mem, CTLFLAG_RD | CTLFLAG_LOCKED, &num_tasks_can_use_secluded_mem, 0, "");
+extern unsigned int vm_page_secluded_target;
+extern unsigned int vm_page_secluded_count;
+extern unsigned int vm_page_secluded_count_free;
+extern unsigned int vm_page_secluded_count_inuse;
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_target, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded_target, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded_count, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_count_free, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded_count_free, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_count_inuse, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded_count_inuse, 0, "");
+
+extern struct vm_page_secluded_data vm_page_secluded;
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_eligible, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.eligible_for_secluded, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_grab_success_free, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.grab_success_free, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_grab_success_other, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.grab_success_other, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_grab_failure_locked, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.grab_failure_locked, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_grab_failure_state, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.grab_failure_state, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_grab_failure_dirty, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.grab_failure_dirty, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_grab_for_iokit, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.grab_for_iokit, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_grab_for_iokit_success, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded.grab_for_iokit_success, 0, "");
+
+#endif /* CONFIG_SECLUDED_MEMORY */
+
+#include <kern/thread.h>
+#include <sys/user.h>
+
+void vm_pageout_io_throttle(void);
+
+void
+vm_pageout_io_throttle(void)
+{
+       struct uthread *uthread = get_bsdthread_info(current_thread());
+
+       /*
+        * thread is marked as a low priority I/O type
+        * and the I/O we issued while in this cleaning operation
+        * collided with normal I/O operations... we'll
+        * delay in order to mitigate the impact of this
+        * task on the normal operation of the system
+        */

 
 

+       if (uthread->uu_lowpri_window) {
+               throttle_lowpri_io(1);
+       }
+}

 
 int
 vm_pressure_monitor(
 
 int
 vm_pressure_monitor(


@@ -1609,9 +2217,9 @@ vm_pressure_monitor(
        struct vm_pressure_monitor_args *uap,
        int *retval)
 {
        struct vm_pressure_monitor_args *uap,
        int *retval)
 {

-       kern_return_t   kr;
-       uint32_t        pages_reclaimed;
-       uint32_t        pages_wanted;
+       kern_return_t   kr;
+       uint32_t        pages_reclaimed;
+       uint32_t        pages_wanted;

 
        kr = mach_vm_pressure_monitor(
                (boolean_t) uap->wait_for_pressure,
 
        kr = mach_vm_pressure_monitor(
                (boolean_t) uap->wait_for_pressure,


@@ -1630,8 +2238,8 @@ vm_pressure_monitor(
 
        if (uap->pages_reclaimed) {
                if (copyout((void *)&pages_reclaimed,
 
        if (uap->pages_reclaimed) {
                if (copyout((void *)&pages_reclaimed,

-                           uap->pages_reclaimed,
-                           sizeof (pages_reclaimed)) != 0) {
+                   uap->pages_reclaimed,
+                   sizeof(pages_reclaimed)) != 0) {

                        return EFAULT;
                }
        }
                        return EFAULT;
                }
        }


@@ -1639,3 +2247,181 @@ vm_pressure_monitor(
        *retval = (int) pages_wanted;
        return 0;
 }
        *retval = (int) pages_wanted;
        return 0;
 }

+
+int
+kas_info(struct proc *p,
+    struct kas_info_args *uap,
+    int *retval __unused)
+{
+#ifdef SECURE_KERNEL
+       (void)p;
+       (void)uap;
+       return ENOTSUP;
+#else /* !SECURE_KERNEL */
+       int                     selector = uap->selector;
+       user_addr_t     valuep = uap->value;
+       user_addr_t     sizep = uap->size;
+       user_size_t size;
+       int                     error;
+
+       if (!kauth_cred_issuser(kauth_cred_get())) {
+               return EPERM;
+       }
+
+#if CONFIG_MACF
+       error = mac_system_check_kas_info(kauth_cred_get(), selector);
+       if (error) {
+               return error;
+       }
+#endif
+
+       if (IS_64BIT_PROCESS(p)) {
+               user64_size_t size64;
+               error = copyin(sizep, &size64, sizeof(size64));
+               size = (user_size_t)size64;
+       } else {
+               user32_size_t size32;
+               error = copyin(sizep, &size32, sizeof(size32));
+               size = (user_size_t)size32;
+       }
+       if (error) {
+               return error;
+       }
+
+       switch (selector) {
+       case KAS_INFO_KERNEL_TEXT_SLIDE_SELECTOR:
+       {
+               uint64_t slide = vm_kernel_slide;
+
+               if (sizeof(slide) != size) {
+                       return EINVAL;
+               }
+
+               if (IS_64BIT_PROCESS(p)) {
+                       user64_size_t size64 = (user64_size_t)size;
+                       error = copyout(&size64, sizep, sizeof(size64));
+               } else {
+                       user32_size_t size32 = (user32_size_t)size;
+                       error = copyout(&size32, sizep, sizeof(size32));
+               }
+               if (error) {
+                       return error;
+               }
+
+               error = copyout(&slide, valuep, sizeof(slide));
+               if (error) {
+                       return error;
+               }
+       }
+       break;
+       default:
+               return EINVAL;
+       }
+
+       return 0;
+#endif /* !SECURE_KERNEL */
+}
+
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcast-qual"
+#pragma clang diagnostic ignored "-Wunused-function"
+
+static void
+asserts()
+{
+       static_assert(sizeof(vm_min_kernel_address) == sizeof(unsigned long));
+       static_assert(sizeof(vm_max_kernel_address) == sizeof(unsigned long));
+}
+
+SYSCTL_ULONG(_vm, OID_AUTO, vm_min_kernel_address, CTLFLAG_RD, (unsigned long *) &vm_min_kernel_address, "");
+SYSCTL_ULONG(_vm, OID_AUTO, vm_max_kernel_address, CTLFLAG_RD, (unsigned long *) &vm_max_kernel_address, "");
+#pragma clang diagnostic pop
+
+extern uint32_t vm_page_pages;
+SYSCTL_UINT(_vm, OID_AUTO, pages, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_pages, 0, "");
+
+extern uint32_t vm_page_busy_absent_skipped;
+SYSCTL_UINT(_vm, OID_AUTO, page_busy_absent_skipped, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_busy_absent_skipped, 0, "");
+
+#if (__arm__ || __arm64__) && (DEVELOPMENT || DEBUG)
+extern int vm_footprint_suspend_allowed;
+SYSCTL_INT(_vm, OID_AUTO, footprint_suspend_allowed, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_footprint_suspend_allowed, 0, "");
+
+extern void pmap_footprint_suspend(vm_map_t map, boolean_t suspend);
+static int
+sysctl_vm_footprint_suspend SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp, arg1, arg2)
+       int error = 0;
+       int new_value;
+
+       if (req->newptr == USER_ADDR_NULL) {
+               return 0;
+       }
+       error = SYSCTL_IN(req, &new_value, sizeof(int));
+       if (error) {
+               return error;
+       }
+       if (!vm_footprint_suspend_allowed) {
+               if (new_value != 0) {
+                       /* suspends are not allowed... */
+                       return 0;
+               }
+               /* ... but let resumes proceed */
+       }
+       DTRACE_VM2(footprint_suspend,
+           vm_map_t, current_map(),
+           int, new_value);
+
+       pmap_footprint_suspend(current_map(), new_value);
+
+       return 0;
+}
+SYSCTL_PROC(_vm, OID_AUTO, footprint_suspend,
+    CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_ANYBODY | CTLFLAG_LOCKED | CTLFLAG_MASKED,
+    0, 0, &sysctl_vm_footprint_suspend, "I", "");
+#endif /* (__arm__ || __arm64__) && (DEVELOPMENT || DEBUG) */
+
+extern uint64_t vm_map_corpse_footprint_count;
+extern uint64_t vm_map_corpse_footprint_size_avg;
+extern uint64_t vm_map_corpse_footprint_size_max;
+extern uint64_t vm_map_corpse_footprint_full;
+extern uint64_t vm_map_corpse_footprint_no_buf;
+SYSCTL_QUAD(_vm, OID_AUTO, corpse_footprint_count,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_corpse_footprint_count, "");
+SYSCTL_QUAD(_vm, OID_AUTO, corpse_footprint_size_avg,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_corpse_footprint_size_avg, "");
+SYSCTL_QUAD(_vm, OID_AUTO, corpse_footprint_size_max,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_corpse_footprint_size_max, "");
+SYSCTL_QUAD(_vm, OID_AUTO, corpse_footprint_full,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_corpse_footprint_full, "");
+SYSCTL_QUAD(_vm, OID_AUTO, corpse_footprint_no_buf,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_corpse_footprint_no_buf, "");
+
+#if PMAP_CS
+extern uint64_t vm_cs_defer_to_pmap_cs;
+extern uint64_t vm_cs_defer_to_pmap_cs_not;
+SYSCTL_QUAD(_vm, OID_AUTO, cs_defer_to_pmap_cs,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &vm_cs_defer_to_pmap_cs, "");
+SYSCTL_QUAD(_vm, OID_AUTO, cs_defer_to_pmap_cs_not,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &vm_cs_defer_to_pmap_cs_not, "");
+#endif /* PMAP_CS */
+
+extern uint64_t shared_region_pager_copied;
+extern uint64_t shared_region_pager_slid;
+extern uint64_t shared_region_pager_slid_error;
+extern uint64_t shared_region_pager_reclaimed;
+SYSCTL_QUAD(_vm, OID_AUTO, shared_region_pager_copied,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_pager_copied, "");
+SYSCTL_QUAD(_vm, OID_AUTO, shared_region_pager_slid,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_pager_slid, "");
+SYSCTL_QUAD(_vm, OID_AUTO, shared_region_pager_slid_error,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_pager_slid_error, "");
+SYSCTL_QUAD(_vm, OID_AUTO, shared_region_pager_reclaimed,
+    CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_pager_reclaimed, "");
+
+#if MACH_ASSERT
+extern int pmap_ledgers_panic_leeway;
+SYSCTL_INT(_vm, OID_AUTO, pmap_ledgers_panic_leeway, CTLFLAG_RW | CTLFLAG_LOCKED, &pmap_ledgers_panic_leeway, 0, "");
+#endif /* MACH_ASSERT */