/*
- * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @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
* 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.
- *
+ *
* 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,
* 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@
*/
-/*
+/*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* 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/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/vm_map.h>
#include <mach/vm_param.h>
#include <mach/vm_prot.h>
+#include <machine/machine_routines.h>
#include <sys/file_internal.h>
#include <sys/param.h>
#include <sys/file.h>
#include <sys/vnode_internal.h>
#include <sys/mount.h>
+#include <sys/xattr.h>
#include <sys/trace.h>
#include <sys/kernel.h>
#include <sys/ubc_internal.h>
#include <sys/kas_info.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
+#include <sys/random.h>
+#if NECP
+#include <net/necp.h>
+#endif /* NECP */
#include <security/audit/audit.h>
#include <security/mac.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 <sys/kern_memorystatus.h>
+#include <sys/kern_memorystatus_freeze.h>
+#include <sys/proc_internal.h>
+
+#if CONFIG_MACF
+#include <security/mac_framework.h>
+#endif
+
+#include <kern/bits.h>
+
+#if CONFIG_CSR
+#include <sys/csr.h>
+#endif /* CONFIG_CSR */
+#include <IOKit/IOBSD.h>
+
+#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, "");
+
+#endif /* DEVELOPMENT || DEBUG */
+
+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", "");
+
+static int
+sysctl_vm_self_region_page_size SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2, oidp)
+ int error = 0;
+ int value;
+
+ value = (1 << thread_self_region_page_shift());
+ 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;
+ }
+
+ if (value != 0 && value != 4096 && value != 16384) {
+ return EINVAL;
+ }
+
+#if !__ARM_MIXED_PAGE_SIZE__
+ if (value != vm_map_page_size(current_map())) {
+ return EINVAL;
+ }
+#endif /* !__ARM_MIXED_PAGE_SIZE__ */
+
+ thread_self_region_page_shift_set(bit_first(value));
+ return 0;
+}
+SYSCTL_PROC(_vm, OID_AUTO, self_region_page_size, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, &sysctl_vm_self_region_page_size, "I", "");
-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 *);
+#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 cs_executable_create_upl;
+extern int cs_executable_wire;
+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_wire, CTLFLAG_RD | CTLFLAG_LOCKED, &cs_executable_wire, 0, "");
#if DEVELOPMENT || DEBUG
extern int radar_20146450;
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, "");
+#if DEVELOPMENT || DEBUG
+extern unsigned long pmap_asid_flushes;
+SYSCTL_ULONG(_vm, OID_AUTO, pmap_asid_flushes, CTLFLAG_RD | CTLFLAG_LOCKED, &pmap_asid_flushes, "");
+extern unsigned long pmap_asid_hits;
+SYSCTL_ULONG(_vm, OID_AUTO, pmap_asid_hits, CTLFLAG_RD | CTLFLAG_LOCKED, &pmap_asid_hits, "");
+extern unsigned long pmap_asid_misses;
+SYSCTL_ULONG(_vm, OID_AUTO, pmap_asid_misses, CTLFLAG_RD | CTLFLAG_LOCKED, &pmap_asid_misses, "");
+#endif
+#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, "");
#pragma unused(arg1, arg2, oidp)
int value = 0;
- if (vm_shadow_max_enabled)
+ 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,
+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, "");
* 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, "");
-#endif /* !SECURE_KERNEL */
+#endif /* DEVELOPMENT || DEBUG */
static const char *prot_values[] = {
"none",
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,
- &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;
* Shared cache path enforcement.
*/
+#if XNU_TARGET_OS_OSX
+
+#if defined (__x86_64__)
static int scdir_enforce = 1;
-static char scdir_path[] = "/var/db/dyld/";
+#else /* defined (__x86_64__) */
+static int scdir_enforce = 0; /* AOT caches live elsewhere */
+#endif /* defined (__x86_64__) */
+
+static char scdir_path[] = "/System/Library/dyld/";
+
+#else /* XNU_TARGET_OS_OSX */
+
+static int scdir_enforce = 0;
+static char scdir_path[] = "/System/Library/Caches/com.apple.dyld/";
+
+#endif /* XNU_TARGET_OS_OSX */
#ifndef SECURE_KERNEL
-SYSCTL_INT(_vm, OID_AUTO, enforce_shared_cache_dir, CTLFLAG_RW | CTLFLAG_LOCKED, &scdir_enforce, 0, "");
+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.
*/
-static int64_t last_unnest_log_time = 0;
+static int64_t last_unnest_log_time = 0;
static int shared_region_unnest_log_count = 0;
-void log_unnest_badness(
- vm_map_t m,
+void
+log_unnest_badness(
+ vm_map_t m,
vm_map_offset_t s,
- vm_map_offset_t e) {
- struct timeval tv;
+ 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) {
+ return;
+ }
- if (shared_region_unnest_logging == 0)
+ 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) {
+ if (shared_region_unnest_logging <= 1) {
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;
- }
- else {
+ }
+ } else {
last_unnest_log_time = tv.tv_sec;
shared_region_unnest_log_count = 0;
}
}
+ 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(
- user_addr_t addr,
- user_size_t len,
- int prot)
+ user_addr_t addr,
+ user_size_t len,
+ int prot)
{
- vm_map_t map;
+ 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));
+ 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(
- user_addr_t addr,
- user_size_t len)
+ user_addr_t addr,
+ user_size_t len)
{
- kern_return_t kret;
- vm_map_t map;
+ kern_return_t kret;
+ vm_map_t map;
map = current_map();
- kret = vm_map_wire(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_PROT_MEMORY_TAG_MAKE(VM_KERN_MEMORY_BSD),
- FALSE);
+ 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:
- return (0);
+ return 0;
case KERN_INVALID_ADDRESS:
case KERN_NO_SPACE:
- return (ENOMEM);
+ return ENOMEM;
case KERN_PROTECTION_FAILURE:
- return (EACCES);
+ return EACCES;
default:
- return (EINVAL);
+ return EINVAL;
}
}
__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 ] */
- kern_return_t kret;
- vm_map_t map;
+ kern_return_t kret;
+ vm_map_t map;
map = current_map();
if (dirtied) {
pmap = get_task_pmap(current_task());
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);
+ vaddr < vm_map_round_page(addr + len, PAGE_MASK);
+ vaddr += PAGE_SIZE) {
+ paddr = pmap_find_phys(pmap, vaddr);
pg = PHYS_TO_VM_PAGE(paddr);
vm_page_set_modified(pg);
}
}
#endif /* FIXME ] */
-#ifdef lint
+#ifdef lint
dirtied++;
-#endif /* lint */
+#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);
+ 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:
- return (0);
+ return 0;
case KERN_INVALID_ADDRESS:
case KERN_NO_SPACE:
- return (ENOMEM);
+ return ENOMEM;
case KERN_PROTECTION_FAILURE:
- return (EACCES);
+ return EACCES;
default:
- return (EINVAL);
+ return EINVAL;
}
}
int byte)
{
char character;
-
+
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 byte)
{
char character;
-
+
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;
- 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;
- if (copyin(addr, (void *) &(byte), sizeof(char)))
- return(-1);
- return(byte);
+ if (copyin(addr, (void *) &(byte), sizeof(char))) {
+ return -1;
+ }
+ return byte;
}
int
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;
- 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 */
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;
- if (copyin(addr, (void *) &word, sizeof(int)))
- return(-1);
- return(word);
+ if (copyin(addr, (void *) &word, sizeof(int))) {
+ return -1;
+ }
+ return word;
}
/*
int
sulong(user_addr_t addr, int64_t word)
{
-
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 {
- return(suiword(addr, (long)word));
+ return suiword(addr, (long)word);
}
}
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 {
- return((int64_t)fuiword(addr));
+ return (int64_t)fuiword(addr);
}
}
int
suulong(user_addr_t addr, uint64_t uword)
{
-
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 {
- return(suiword(addr, (uint32_t)uword));
+ return suiword(addr, (uint32_t)uword);
}
}
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 {
- return((uint64_t)fuiword(addr));
+ return (uint64_t)fuiword(addr);
}
}
int
swapon(__unused proc_t procp, __unused struct swapon_args *uap, __unused int *retval)
{
- return(ENOTSUP);
+ return ENOTSUP;
}
/*
* 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
- * args->pid Process ID (returned value; see below)
+ * args->pid Process ID (returned value; see below)
*
* Returns: KERL_SUCCESS Success
- * KERN_FAILURE Not success
+ * KERN_FAILURE Not success
*
* Implicit returns: args->pid Process ID
*
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;
- 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);
- t1 = port_name_to_task(t);
+ t1 = port_name_to_task_name(t);
if (t1 == TASK_NULL) {
err = KERN_FAILURE;
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;
}
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
* 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:
{
kauth_cred_t targetcred, mycred;
uid_t myuid;
- int allowed;
+ int allowed;
/* No task_for_pid on bad targets */
if (target->p_stat == SZOMB) {
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;
+ }
/* We're allowed to get our own task port */
- if (target == current_proc())
+ if (target == current_proc()) {
return TRUE;
+ }
- /*
+ /*
* 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;
}
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 == 0) {
+ allowed == 0) {
allowed = FALSE;
goto out;
}
allowed = FALSE;
goto out;
}
-
+
out:
kauth_cred_unref(&targetcred);
return allowed;
* 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__(
+__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);
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;
- void * sright;
- int error = 0;
+ 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 = NULL;
+ int error = 0;
+ boolean_t is_current_proc = FALSE;
+ struct proc_ident pident = {0};
AUDIT_MACH_SYSCALL_ENTER(AUE_TASKFORPID);
AUDIT_ARG(pid, pid);
/* 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);
- 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);
- return(KERN_FAILURE);
- }
+ return KERN_FAILURE;
+ }
p = proc_find(pid);
error = KERN_FAILURE;
goto tfpout;
}
+ pident = proc_ident(p);
+ is_current_proc = (p == current_proc());
#if CONFIG_AUDIT
AUDIT_ARG(process, p);
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;
- }
+ /*
+ * Grab a task reference and drop the proc reference as the proc ref
+ * shouldn't be held accross upcalls.
+ */
+ task = p->task;
+ task_reference(task);
- /* Call up to the task access server */
- error = __KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__(tfpport, proc_selfpid(), kauth_getgid(), pid);
+ proc_rele(p);
+ p = PROC_NULL;
- if (error != MACH_MSG_SUCCESS) {
- if (error == MACH_RCV_INTERRUPTED)
- error = KERN_ABORTED;
- else
- error = KERN_FAILURE;
- goto tfpout;
- }
- }
#if CONFIG_MACF
- error = mac_proc_check_get_task(kauth_cred_get(), p);
- if (error) {
- error = KERN_FAILURE;
+ error = mac_proc_check_get_task(kauth_cred_get(), &pident);
+ if (error) {
+ error = KERN_FAILURE;
+ goto tfpout;
+ }
+#endif
+
+ /* If we aren't root and target's task access port is set... */
+ if (!kauth_cred_issuser(kauth_cred_get()) &&
+ !is_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;
}
-#endif
- /* Grant task port access */
- task_reference(p->task);
- extmod_statistics_incr_task_for_pid(p->task);
+ /* 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;
+ }
+ goto tfpout;
+ }
+ }
+
+ /* 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;
+ }
+
+ /* 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));
- 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);
+ }
AUDIT_MACH_SYSCALL_EXIT(error);
- return(error);
+ return error;
}
/*
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;
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) {
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) {
+ struct proc_ident pident = proc_ident(p);
+
+ task_t task = p->task;
+
task_reference(p->task);
+ proc_rele(p);
+ p = PROC_NULL;
#if CONFIG_MACF
- error = mac_proc_check_get_task_name(kauth_cred_get(), p);
+ error = mac_proc_check_get_task_name(kauth_cred_get(), &pident);
if (error) {
- task_deallocate(p->task);
+ task_deallocate(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
+ sright = (void *)convert_task_name_to_port(task);
+ task = NULL;
+ tret = ipc_port_copyout_send(sright,
+ get_task_ipcspace(current_task()));
+ } else {
tret = MACH_PORT_NULL;
+ }
AUDIT_ARG(mach_port2, tret);
(void) copyout((char *)&tret, task_addr, sizeof(mach_port_name_t));
#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:
- if (refheld != 0)
+ if (refheld != 0) {
kauth_cred_unref(&target_cred);
- if (p != PROC_NULL)
+ }
+ if (p != PROC_NULL) {
proc_rele(p);
+ }
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)
+/*
+ * Routine: task_inspect_for_pid
+ * Purpose:
+ * Get the task inspect port for another "process", named by its
+ * process ID on the same host as "target_task".
+ */
+int
+task_inspect_for_pid(struct proc *p __unused, struct task_inspect_for_pid_args *args, int *ret)
{
- 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 (error) {
- error = EPERM;
- goto out;
+ mach_port_name_t target_tport = args->target_tport;
+ int pid = args->pid;
+ user_addr_t task_addr = args->t;
+
+ proc_t proc = PROC_NULL;
+ task_t t1 = TASK_NULL;
+ task_inspect_t task_insp = TASK_INSPECT_NULL;
+ mach_port_name_t tret = MACH_PORT_NULL;
+ ipc_port_t tfpport = MACH_PORT_NULL;
+ int error = 0;
+ void *sright = NULL;
+ boolean_t is_current_proc = FALSE;
+ struct proc_ident pident = {0};
+
+ /* Disallow inspect port for kernel_task */
+ if (pid == 0) {
+ (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
+ return EPERM;
}
-#endif
- if (pid == 0) {
- error = EPERM;
- goto out;
+ t1 = port_name_to_task(target_tport);
+ if (t1 == TASK_NULL) {
+ (void) copyout((char *) &t1, task_addr, sizeof(mach_port_name_t));
+ return EINVAL;
}
- targetproc = proc_find(pid);
- if (targetproc == PROC_NULL) {
+ proc = proc_find(pid);
+ if (proc == PROC_NULL) {
error = ESRCH;
- goto out;
+ goto tifpout;
}
+ pident = proc_ident(proc);
+ is_current_proc = (proc == current_proc());
- if (!task_for_pid_posix_check(targetproc)) {
+ if (!(task_for_pid_posix_check(proc))) {
error = EPERM;
- goto out;
+ goto tifpout;
}
- target = targetproc->task;
- if (target != TASK_NULL) {
- mach_port_t tfpport;
+ task_insp = proc->task;
+ if (task_insp == TASK_INSPECT_NULL) {
+ goto tifpout;
+ }
- /* 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)) {
+ /*
+ * Grab a task reference and drop the proc reference before making any upcalls.
+ */
+ task_reference(task_insp);
- if (tfpport == IPC_PORT_DEAD) {
- error = EACCES;
- goto out;
- }
+ proc_rele(proc);
+ proc = PROC_NULL;
- /* Call up to the task access server */
- error = __KERNEL_WAITING_ON_TASKGATED_CHECK_ACCESS_UPCALL__(tfpport, proc_selfpid(), kauth_getgid(), pid);
+ /*
+ * For now, it performs the same set of permission checks as task_for_pid. This
+ * will be addressed in rdar://problem/53478660
+ */
+#if CONFIG_MACF
+ error = mac_proc_check_get_task(kauth_cred_get(), &pident);
+ if (error) {
+ error = EPERM;
+ goto tifpout;
+ }
+#endif
- if (error != MACH_MSG_SUCCESS) {
- if (error == MACH_RCV_INTERRUPTED)
- error = EINTR;
- else
- error = EPERM;
- goto out;
- }
+ /* If we aren't root and target's task access port is set... */
+ if (!kauth_cred_issuser(kauth_cred_get()) &&
+ !is_current_proc &&
+ (task_get_task_access_port(task_insp, &tfpport) == 0) &&
+ (tfpport != IPC_PORT_NULL)) {
+ if (tfpport == IPC_PORT_DEAD) {
+ error = EACCES;
+ goto tifpout;
}
- }
- task_reference(target);
- error = task_pidsuspend(target);
- if (error) {
- if (error == KERN_INVALID_ARGUMENT) {
- error = EINVAL;
- } else {
- error = EPERM;
+
+ /* 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 = EINTR;
+ } else {
+ error = EPERM;
+ }
+ goto tifpout;
}
}
-#if CONFIG_MEMORYSTATUS
- else {
- memorystatus_on_suspend(targetproc);
- }
-#endif
- task_deallocate(target);
+ /* Check if the task has been corpsified */
+ if (is_corpsetask(task_insp)) {
+ error = EACCES;
+ goto tifpout;
+ }
-out:
- if (targetproc != PROC_NULL)
- proc_rele(targetproc);
- *ret = error;
- return error;
-}
+ /* could be IP_NULL, consumes a ref */
+ sright = (void*) convert_task_inspect_to_port(task_insp);
+ task_insp = TASK_INSPECT_NULL;
+ tret = ipc_port_copyout_send(sright, get_task_ipcspace(current_task()));
-kern_return_t
+tifpout:
+ task_deallocate(t1);
+ (void) copyout((char *) &tret, task_addr, sizeof(mach_port_name_t));
+ if (proc != PROC_NULL) {
+ proc_rele(proc);
+ }
+ if (tfpport != IPC_PORT_NULL) {
+ ipc_port_release_send(tfpport);
+ }
+ if (task_insp != TASK_INSPECT_NULL) {
+ task_deallocate(task_insp);
+ }
+
+ *ret = error;
+ return error;
+}
+
+/*
+ * Routine: task_read_for_pid
+ * Purpose:
+ * Get the task read port for another "process", named by its
+ * process ID on the same host as "target_task".
+ */
+int
+task_read_for_pid(struct proc *p __unused, struct task_read_for_pid_args *args, int *ret)
+{
+ mach_port_name_t target_tport = args->target_tport;
+ int pid = args->pid;
+ user_addr_t task_addr = args->t;
+
+ proc_t proc = PROC_NULL;
+ task_t t1 = TASK_NULL;
+ task_read_t task_read = TASK_READ_NULL;
+ mach_port_name_t tret = MACH_PORT_NULL;
+ ipc_port_t tfpport = MACH_PORT_NULL;
+ int error = 0;
+ void *sright = NULL;
+ boolean_t is_current_proc = FALSE;
+ struct proc_ident pident = {0};
+
+ /* Disallow read port for kernel_task */
+ if (pid == 0) {
+ (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
+ return EPERM;
+ }
+
+ t1 = port_name_to_task(target_tport);
+ if (t1 == TASK_NULL) {
+ (void) copyout((char *) &t1, task_addr, sizeof(mach_port_name_t));
+ return EINVAL;
+ }
+
+ proc = proc_find(pid);
+ if (proc == PROC_NULL) {
+ error = ESRCH;
+ goto trfpout;
+ }
+ pident = proc_ident(proc);
+ is_current_proc = (proc == current_proc());
+
+ if (!(task_for_pid_posix_check(proc))) {
+ error = EPERM;
+ goto trfpout;
+ }
+
+ task_read = proc->task;
+ if (task_read == TASK_INSPECT_NULL) {
+ goto trfpout;
+ }
+
+ /*
+ * Grab a task reference and drop the proc reference before making any upcalls.
+ */
+ task_reference(task_read);
+
+ proc_rele(proc);
+ proc = PROC_NULL;
+
+ /*
+ * For now, it performs the same set of permission checks as task_for_pid. This
+ * will be addressed in rdar://problem/53478660
+ */
+#if CONFIG_MACF
+ error = mac_proc_check_get_task(kauth_cred_get(), &pident);
+ if (error) {
+ error = EPERM;
+ goto trfpout;
+ }
+#endif
+
+ /* If we aren't root and target's task access port is set... */
+ if (!kauth_cred_issuser(kauth_cred_get()) &&
+ !is_current_proc &&
+ (task_get_task_access_port(task_read, &tfpport) == 0) &&
+ (tfpport != IPC_PORT_NULL)) {
+ if (tfpport == IPC_PORT_DEAD) {
+ error = EACCES;
+ goto trfpout;
+ }
+
+
+ /* 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 = EINTR;
+ } else {
+ error = EPERM;
+ }
+ goto trfpout;
+ }
+ }
+
+ /* Check if the task has been corpsified */
+ if (is_corpsetask(task_read)) {
+ error = EACCES;
+ goto trfpout;
+ }
+
+ /* could be IP_NULL, consumes a ref */
+ sright = (void*) convert_task_read_to_port(task_read);
+ task_read = TASK_READ_NULL;
+ tret = ipc_port_copyout_send(sright, get_task_ipcspace(current_task()));
+
+trfpout:
+ task_deallocate(t1);
+ (void) copyout((char *) &tret, task_addr, sizeof(mach_port_name_t));
+ if (proc != PROC_NULL) {
+ proc_rele(proc);
+ }
+ if (tfpport != IPC_PORT_NULL) {
+ ipc_port_release_send(tfpport);
+ }
+ if (task_read != TASK_READ_NULL) {
+ task_deallocate(task_read);
+ }
+
+ *ret = error;
+ return error;
+}
+
+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;
+ mach_port_t tfpport = MACH_PORT_NULL;
+
+ if (pid == 0) {
+ error = EPERM;
+ goto out;
+ }
+
+ targetproc = proc_find(pid);
+ if (targetproc == PROC_NULL) {
+ error = ESRCH;
+ goto out;
+ }
+
+ if (!task_for_pid_posix_check(targetproc) &&
+ !IOTaskHasEntitlement(current_task(), PROCESS_RESUME_SUSPEND_ENTITLEMENT)) {
+ error = EPERM;
+ goto out;
+ }
+
+#if CONFIG_MACF
+ error = mac_proc_check_suspend_resume(targetproc, MAC_PROC_CHECK_SUSPEND);
+ if (error) {
+ error = EPERM;
+ goto out;
+ }
+#endif
+
+ target = targetproc->task;
+#ifndef CONFIG_EMBEDDED
+ if (target != TASK_NULL) {
+ /* 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)) {
+ if (tfpport == IPC_PORT_DEAD) {
+ error = EACCES;
+ goto out;
+ }
+
+ /* 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 = EINTR;
+ } else {
+ error = EPERM;
+ }
+ goto out;
+ }
+ }
+ }
+#endif
+
+ task_reference(target);
+ error = task_pidsuspend(target);
+ if (error) {
+ if (error == KERN_INVALID_ARGUMENT) {
+ error = EINVAL;
+ } else {
+ error = EPERM;
+ }
+ }
+#if CONFIG_MEMORYSTATUS
+ else {
+ memorystatus_on_suspend(targetproc);
+ }
+#endif
+
+ task_deallocate(target);
+
+out:
+ if (tfpport != IPC_PORT_NULL) {
+ ipc_port_release_send(tfpport);
+ }
+
+ if (targetproc != PROC_NULL) {
+ proc_rele(targetproc);
+ }
+ *ret = error;
+ return error;
+}
+
+kern_return_t
+debug_control_port_for_pid(struct debug_control_port_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;
+ task_t task = TASK_NULL;
+ mach_port_name_t tret = MACH_PORT_NULL;
+ ipc_port_t tfpport = MACH_PORT_NULL;
+ ipc_port_t sright = NULL;
+ int error = 0;
+ boolean_t is_current_proc = FALSE;
+ struct proc_ident pident = {0};
+
+ AUDIT_MACH_SYSCALL_ENTER(AUE_DBGPORTFORPID);
+ AUDIT_ARG(pid, pid);
+ AUDIT_ARG(mach_port1, target_tport);
+
+ /* Always check if pid == 0 */
+ if (pid == 0) {
+ (void) copyout((char *)&t1, task_addr, sizeof(mach_port_name_t));
+ AUDIT_MACH_SYSCALL_EXIT(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);
+ return KERN_FAILURE;
+ }
+
+ p = proc_find(pid);
+ if (p == PROC_NULL) {
+ error = KERN_FAILURE;
+ goto tfpout;
+ }
+ pident = proc_ident(p);
+ is_current_proc = (p == current_proc());
+
+#if CONFIG_AUDIT
+ AUDIT_ARG(process, p);
+#endif
+
+ if (!(task_for_pid_posix_check(p))) {
+ error = KERN_FAILURE;
+ goto tfpout;
+ }
+
+ if (p->task == TASK_NULL) {
+ error = KERN_SUCCESS;
+ goto tfpout;
+ }
+
+ /*
+ * Grab a task reference and drop the proc reference before making any upcalls.
+ */
+ task = p->task;
+ task_reference(task);
+
+ proc_rele(p);
+ p = PROC_NULL;
+
+ if (!IOTaskHasEntitlement(current_task(), DEBUG_PORT_ENTITLEMENT)) {
+#if CONFIG_MACF
+ error = mac_proc_check_get_task(kauth_cred_get(), &pident);
+ if (error) {
+ error = KERN_FAILURE;
+ goto tfpout;
+ }
+#endif
+
+ /* If we aren't root and target's task access port is set... */
+ if (!kauth_cred_issuser(kauth_cred_get()) &&
+ !is_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;
+ }
+
+
+ /* 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;
+ }
+ goto tfpout;
+ }
+ }
+ }
+
+ /* Check if the task has been corpsified */
+ if (is_corpsetask(task)) {
+ error = KERN_FAILURE;
+ goto tfpout;
+ }
+
+ error = task_get_debug_control_port(task, &sright);
+ if (error != KERN_SUCCESS) {
+ goto tfpout;
+ }
+
+ 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));
+
+ if (tfpport != IPC_PORT_NULL) {
+ ipc_port_release_send(tfpport);
+ }
+ if (task != TASK_NULL) {
+ task_deallocate(task);
+ }
+ if (p != PROC_NULL) {
+ proc_rele(p);
+ }
+ AUDIT_MACH_SYSCALL_EXIT(error);
+ return error;
+}
+
+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;
+ mach_port_t tfpport = MACH_PORT_NULL;
+
+ if (pid == 0) {
+ error = EPERM;
+ goto out;
+ }
+
+ targetproc = proc_find(pid);
+ if (targetproc == PROC_NULL) {
+ error = ESRCH;
+ goto out;
+ }
+
+ if (!task_for_pid_posix_check(targetproc) &&
+ !IOTaskHasEntitlement(current_task(), PROCESS_RESUME_SUSPEND_ENTITLEMENT)) {
+ error = EPERM;
+ goto out;
+ }
+
+#if CONFIG_MACF
+ error = mac_proc_check_suspend_resume(targetproc, MAC_PROC_CHECK_RESUME);
+ if (error) {
+ error = EPERM;
+ goto out;
+ }
+#endif
+
+ target = targetproc->task;
+#ifndef CONFIG_EMBEDDED
+ if (target != TASK_NULL) {
+ /* 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)) {
+ if (tfpport == IPC_PORT_DEAD) {
+ error = EACCES;
+ goto out;
+ }
+
+ /* 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 = EINTR;
+ } else {
+ error = EPERM;
+ }
+ goto out;
+ }
+ }
+ }
+#endif
+
+#if !XNU_TARGET_OS_OSX
+#if SOCKETS
+ resume_proc_sockets(targetproc);
+#endif /* SOCKETS */
+#endif /* !XNU_TARGET_OS_OSX */
+
+ task_reference(target);
+
+#if CONFIG_MEMORYSTATUS
+ memorystatus_on_resume(targetproc);
+#endif
+
+ error = task_pidresume(target);
+ if (error) {
+ if (error == KERN_INVALID_ARGUMENT) {
+ error = EINVAL;
+ } else {
+ if (error == KERN_MEMORY_ERROR) {
+ psignal(targetproc, SIGKILL);
+ error = EIO;
+ } else {
+ error = EPERM;
+ }
+ }
+ }
+
+ task_deallocate(target);
+
+out:
+ if (tfpport != IPC_PORT_NULL) {
+ ipc_port_release_send(tfpport);
+ }
+
+ if (targetproc != PROC_NULL) {
+ proc_rele(targetproc);
+ }
+
+ *ret = error;
+ return error;
+}
+
+#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)
+{
+ int error = 0;
+ proc_t targetproc = PROC_NULL;
+ int pid = args->pid;
+
+#ifndef CONFIG_FREEZE
+ #pragma unused(pid)
+#else
+
+ /*
+ * 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 (targetproc == PROC_NULL) {
+ error = ESRCH;
+ goto out;
+ }
+
+ if (!task_for_pid_posix_check(targetproc)) {
+ error = EPERM;
+ goto out;
+ }
+ }
+
+#if CONFIG_MACF
+ //Note that targetproc may be null
+ error = mac_proc_check_suspend_resume(targetproc, MAC_PROC_CHECK_HIBERNATE);
+ if (error) {
+ error = EPERM;
+ goto out;
+ }
+#endif
+
+ if (pid == -2) {
+ vm_pageout_anonymous_pages();
+ } else if (pid == -1) {
+ memorystatus_on_inactivity(targetproc);
+ } else {
+ error = memorystatus_freeze_process_sync(targetproc);
+ }
+
+out:
+
+#endif /* CONFIG_FREEZE */
+
+ if (targetproc != PROC_NULL) {
+ proc_rele(targetproc);
+ }
+ *ret = error;
+ return error;
+}
+#endif /* CONFIG_EMBEDDED */
+
+#if SOCKETS
+int
+networking_memstatus_callout(proc_t p, uint32_t status)
+{
+ struct fileproc *fp;
+
+ /*
+ * 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);
-#if CONFIG_MACF
- error = mac_proc_check_suspend_resume(p, MAC_PROC_CHECK_RESUME);
- if (error) {
- error = EPERM;
- goto out;
+ proc_fdlock(p);
+
+ fdt_foreach(fp, p) {
+ switch (FILEGLOB_DTYPE(fp->fp_glob)) {
+#if NECP
+ case DTYPE_NETPOLICY:
+ necp_fd_memstatus(p, status,
+ (struct necp_fd_data *)fp->fp_glob->fg_data);
+ break;
+#endif /* NECP */
+ default:
+ break;
+ }
}
-#endif
+ proc_fdunlock(p);
- if (pid == 0) {
- error = EPERM;
+ 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 fileproc *fp;
+
+ proc_fdlock(p);
+
+ fdt_foreach(fp, p) {
+ struct fileglob *fg = fp->fp_glob;
+
+ 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 error = 0;
+ proc_t targetproc = PROC_NULL;
+ int pid = args->pid;
+ int level = args->level;
+
+ if (level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_SVC &&
+ level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_ALL) {
+ error = EINVAL;
goto out;
}
goto out;
}
- if (!task_for_pid_posix_check(targetproc)) {
+ if (!task_for_pid_posix_check(targetproc) &&
+ !IOTaskHasEntitlement(current_task(), PROCESS_RESUME_SUSPEND_ENTITLEMENT)) {
error = EPERM;
goto out;
}
- target = targetproc->task;
- if (target != TASK_NULL) {
- mach_port_t tfpport;
-
- /* 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)) {
-
- if (tfpport == IPC_PORT_DEAD) {
- error = EACCES;
- goto out;
- }
-
- /* 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 = EINTR;
- else
- error = EPERM;
- goto out;
- }
- }
+#if CONFIG_MACF
+ error = mac_proc_check_suspend_resume(targetproc, MAC_PROC_CHECK_SHUTDOWN_SOCKETS);
+ if (error) {
+ error = EPERM;
+ goto out;
}
-
-
- task_reference(target);
-
-#if CONFIG_MEMORYSTATUS
- memorystatus_on_resume(targetproc);
#endif
- error = task_pidresume(target);
- if (error) {
- if (error == KERN_INVALID_ARGUMENT) {
- error = EINVAL;
- } else {
- if (error == KERN_MEMORY_ERROR) {
- psignal(targetproc, SIGKILL);
- error = EIO;
- } else
- error = EPERM;
- }
- }
-
- task_deallocate(target);
+ proc_iterate(PROC_ALLPROCLIST | PROC_NOWAITTRANS,
+ networking_defunct_callout, args, NULL, NULL);
out:
- if (targetproc != PROC_NULL)
+ if (targetproc != PROC_NULL) {
proc_rele(targetproc);
-
+ }
*ret = error;
return error;
}
+#endif /* SOCKETS */
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;
- 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 (!kauth_cred_issuser(kauth_cred_get()))
- return(EPERM);
+ if (!kauth_cred_issuser(kauth_cred_get())) {
+ return EPERM;
+ }
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:
- return(error);
-
+ return error;
}
#if defined(SECURE_KERNEL)
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,
- &shared_region_trace_level, 0, "");
+ &shared_region_trace_level, 0, "");
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,
- &shared_region_persistence, 0, "");
+ &shared_region_persistence, 0, "");
/*
* 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 = 0;
- int error;
- kern_return_t kr;
+ vm_shared_region_t shared_region;
+ mach_vm_offset_t start_address = 0;
+ int error = 0;
+ kern_return_t kr;
SHARED_REGION_TRACE_DEBUG(
("shared_region: %p [%d(%s)] -> check_np(0x%llx)\n",
- (void *)VM_KERNEL_ADDRPERM(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,
- &start_address);
+ kr = vm_shared_region_start_address(shared_region, &start_address);
if (kr != KERN_SUCCESS) {
error = ENOMEM;
} else {
+#if __has_feature(ptrauth_calls)
+ /*
+ * Remap any section of the shared library that
+ * has authenticated pointers into private memory.
+ */
+ if (vm_shared_region_auth_remap(shared_region) != KERN_SUCCESS) {
+ error = ENOMEM;
+ }
+#endif /* __has_feature(ptrauth_calls) */
+
/* ... and give it to the caller */
- error = copyout(&start_address,
- (user_addr_t) uap->start_address,
- sizeof (start_address));
- if (error) {
+ if (error == 0) {
+ error = copyout(&start_address,
+ (user_addr_t) uap->start_address,
+ sizeof(start_address));
+ }
+ if (error != 0) {
SHARED_REGION_TRACE_ERROR(
("shared_region: %p [%d(%s)] "
- "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));
+ "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);
SHARED_REGION_TRACE_DEBUG(
("shared_region: %p [%d(%s)] check_np(0x%llx) <- 0x%llx %d\n",
- (void *)VM_KERNEL_ADDRPERM(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;
}
-int
-shared_region_copyin_mappings(
- struct proc *p,
- user_addr_t user_mappings,
- unsigned int mappings_count,
- struct shared_file_mapping_np *mappings)
+static int
+shared_region_copyin(
+ struct proc *p,
+ user_addr_t user_addr,
+ unsigned int count,
+ unsigned int element_size,
+ void *kernel_data)
{
- int error = 0;
- vm_size_t mappings_size = 0;
-
- /* get the list of mappings the caller wants us to establish */
- mappings_size = (vm_size_t) (mappings_count * sizeof (mappings[0]));
- error = copyin(user_mappings,
- mappings,
- mappings_size);
+ int error = 0;
+ vm_size_t size = count * element_size;
+
+ error = copyin(user_addr, kernel_data, size);
if (error) {
SHARED_REGION_TRACE_ERROR(
("shared_region: %p [%d(%s)] map(): "
- "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));
+ "copyin(0x%llx, %ld) failed (error=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (uint64_t)user_addr, (long)size, error));
}
return error;
}
+
+#define _SR_FILE_MAPPINGS_MAX_FILES 2
+
+/* forward declaration */
+__attribute__((noinline))
+static void shared_region_map_and_slide_cleanup(
+ struct proc *p,
+ uint32_t files_count,
+ struct _sr_file_mappings *sr_file_mappings,
+ struct vm_shared_region *shared_region,
+ struct vnode *scdir_vp);
+
/*
- * shared_region_map_np()
- *
- * This system call is intended for dyld.
- *
- * dyld uses this to map a shared cache file into a shared region.
- * This is usually done only the first time a shared cache is needed.
- * Subsequent processes will just use the populated shared region without
- * requiring any further setup.
+ * Setup part of _shared_region_map_and_slide().
+ * It had to be broken out of _shared_region_map_and_slide() to
+ * prevent compiler inlining from blowing out the stack.
*/
-int
-_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)
+__attribute__((noinline))
+static int
+shared_region_map_and_slide_setup(
+ struct proc *p,
+ uint32_t files_count,
+ struct shared_file_np *files,
+ uint32_t mappings_count,
+ struct shared_file_mapping_slide_np *mappings,
+ struct _sr_file_mappings **sr_file_mappings,
+ struct vm_shared_region **shared_region_ptr,
+ struct vnode **scdir_vp,
+ struct vnode *rdir_vp)
{
- 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;
+ int error = 0;
+ struct _sr_file_mappings *srfmp;
+ uint32_t mappings_next;
+ struct vnode_attr va;
+ off_t fs;
#if CONFIG_MACF
- vm_prot_t maxprot = VM_PROT_ALL;
+ vm_prot_t maxprot = VM_PROT_ALL;
#endif
- memory_object_control_t file_control;
- struct vm_shared_region *shared_region;
+ uint32_t i;
+ struct vm_shared_region *shared_region;
SHARED_REGION_TRACE_DEBUG(
("shared_region: %p [%d(%s)] -> map\n",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm));
-
- shared_region = NULL;
- fp = NULL;
- vp = NULL;
- scdir_vp = NULL;
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm));
- /* 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",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm, fd, error));
+ if (files_count > _SR_FILE_MAPPINGS_MAX_FILES) {
+ error = E2BIG;
goto done;
}
-
- /* make sure we're attempting to map a vnode */
- if (FILEGLOB_DTYPE(fp->f_fglob) != DTYPE_VNODE) {
- SHARED_REGION_TRACE_ERROR(
- ("shared_region: %p [%d(%s)] map: "
- "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)));
+ if (files_count == 0) {
error = EINVAL;
goto done;
}
-
- /* we need at least read permission on the file */
- if (! (fp->f_fglob->fg_flag & FREAD)) {
- SHARED_REGION_TRACE_ERROR(
- ("shared_region: %p [%d(%s)] map: "
- "fd=%d not readable\n",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm, fd));
- error = EPERM;
+ *sr_file_mappings = kheap_alloc(KHEAP_TEMP, files_count * sizeof(struct _sr_file_mappings), Z_WAITOK);
+ if (*sr_file_mappings == NULL) {
+ error = ENOMEM;
goto done;
}
+ bzero(*sr_file_mappings, files_count * sizeof(struct _sr_file_mappings));
+ mappings_next = 0;
+ for (i = 0; i < files_count; i++) {
+ srfmp = &(*sr_file_mappings)[i];
+ srfmp->fd = files[i].sf_fd;
+ srfmp->mappings_count = files[i].sf_mappings_count;
+ srfmp->mappings = &mappings[mappings_next];
+ mappings_next += srfmp->mappings_count;
+ if (mappings_next > mappings_count) {
+ error = EINVAL;
+ goto done;
+ }
+ srfmp->slide = files[i].sf_slide;
+ }
- /* get vnode from file structure */
- error = vnode_getwithref((vnode_t) fp->f_fglob->fg_data);
- if (error) {
- SHARED_REGION_TRACE_ERROR(
- ("shared_region: %p [%d(%s)] map: "
- "fd=%d getwithref failed (error=%d)\n",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm, fd, error));
- 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)]: "
+ "vnode_lookup(%s) failed (error=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ scdir_path, error));
+ goto done;
+ }
}
- vp = (struct vnode *) fp->f_fglob->fg_data;
- /* make sure the vnode is a regular file */
- if (vp->v_type != VREG) {
+ /* get the process's shared region (setup in vm_map_exec()) */
+ shared_region = vm_shared_region_trim_and_get(current_task());
+ *shared_region_ptr = shared_region;
+ if (shared_region == NULL) {
SHARED_REGION_TRACE_ERROR(
- ("shared_region: %p [%d(%s)] map(%p:'%s'): "
- "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));
+ ("shared_region: %p [%d(%s)] map(): "
+ "no shared region\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm));
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()),
- fp->f_fglob, VM_PROT_ALL, MAP_FILE, 0, &maxprot);
- if (error) {
+ /*
+ * Check the shared region matches the current root
+ * directory of this process. Deny the mapping to
+ * avoid tainting the shared region with something that
+ * doesn't quite belong into it.
+ */
+ struct vnode *sr_vnode = vm_shared_region_root_dir(shared_region);
+ if (sr_vnode != NULL ? rdir_vp != sr_vnode : rdir_vp != rootvnode) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: map(%p) root_dir mismatch\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread())));
+ error = EPERM;
goto done;
}
-#endif /* MAC */
-#if CONFIG_PROTECT
- /* check for content protection access */
- {
- error = cp_handle_vnop(vp, CP_READ_ACCESS | CP_WRITE_ACCESS, 0);
- if (error) {
+
+ for (srfmp = &(*sr_file_mappings)[0];
+ srfmp < &(*sr_file_mappings)[files_count];
+ srfmp++) {
+ if (srfmp->mappings_count == 0) {
+ /* no mappings here... */
+ continue;
+ }
+
+ /* get file structure from file descriptor */
+ error = fp_get_ftype(p, srfmp->fd, DTYPE_VNODE, EINVAL, &srfmp->fp);
+ if (error) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map: "
+ "fd=%d lookup failed (error=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm, srfmp->fd, 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) {
- root_vp = rootvnode;
- } else {
+ /* we need at least read permission on the file */
+ if (!(srfmp->fp->fp_glob->fg_flag & FREAD)) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map: "
+ "fd=%d not readable\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm, srfmp->fd));
+ error = EPERM;
+ goto done;
+ }
+
+ /* get vnode from file structure */
+ error = vnode_getwithref((vnode_t) srfmp->fp->fp_glob->fg_data);
+ if (error) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map: "
+ "fd=%d getwithref failed (error=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm, srfmp->fd, error));
+ goto done;
+ }
+ srfmp->vp = (struct vnode *) srfmp->fp->fp_glob->fg_data;
+
+ /* make sure the vnode is a regular file */
+ if (srfmp->vp->v_type != VREG) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+ "not a file (type=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name, srfmp->vp->v_type));
+ 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()),
+ srfmp->fp->fp_glob, VM_PROT_ALL, MAP_FILE, 0, &maxprot);
+ if (error) {
+ goto done;
+ }
+#endif /* MAC */
+
+#if XNU_TARGET_OS_OSX && defined(__arm64__)
/*
- * Chroot-ed processes can't use the shared_region.
+ * Check if the shared cache is in the trust cache;
+ * if so, we can skip the root ownership check.
*/
- error = EINVAL;
- goto done;
- }
+#if DEVELOPMENT || DEBUG
+ /*
+ * Skip both root ownership and trust cache check if
+ * enforcement is disabled.
+ */
+ if (!cs_system_enforcement()) {
+ goto after_root_check;
+ }
+#endif /* DEVELOPMENT || DEBUG */
+ struct cs_blob *blob = csvnode_get_blob(srfmp->vp, 0);
+ if (blob == NULL) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+ "missing CS blob\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name));
+ goto root_check;
+ }
+ const uint8_t *cdhash = csblob_get_cdhash(blob);
+ if (cdhash == NULL) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+ "missing cdhash\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name));
+ goto root_check;
+ }
+ uint32_t result = pmap_lookup_in_static_trust_cache(cdhash);
+ boolean_t in_trust_cache = result & (TC_LOOKUP_FOUND << TC_LOOKUP_RESULT_SHIFT);
+ if (!in_trust_cache) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+ "not in trust cache\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name));
+ goto root_check;
+ }
+ goto after_root_check;
+root_check:
+#endif /* XNU_TARGET_OS_OSX && defined(__arm64__) */
- 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",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm,
- (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name));
- error = EPERM;
- goto done;
- }
+ /* The shared cache file must be owned by root */
+ VATTR_INIT(&va);
+ VATTR_WANTED(&va, va_uid);
+ error = vnode_getattr(srfmp->vp, &va, vfs_context_current());
+ if (error) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+ "vnode_getattr(%p) failed (error=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ error));
+ 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",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name, va.va_uid));
+ error = EPERM;
+ goto done;
+ }
- /* make sure vnode is owned by "root" */
- VATTR_INIT(&va);
- VATTR_WANTED(&va, va_uid);
- error = vnode_getattr(vp, &va, vfs_context_current());
- if (error) {
- SHARED_REGION_TRACE_ERROR(
- ("shared_region: %p [%d(%s)] map(%p:'%s'): "
- "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'): "
- "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;
- }
+#if XNU_TARGET_OS_OSX && defined(__arm64__)
+after_root_check:
+#endif /* XNU_TARGET_OS_OSX && defined(__arm64__) */
- if (scdir_enforce) {
- /* get vnode for scdir_path */
- error = vnode_lookup(scdir_path, 0, &scdir_vp, vfs_context_current());
+#if CONFIG_CSR
+ if (csr_check(CSR_ALLOW_UNRESTRICTED_FS) != 0) {
+ VATTR_INIT(&va);
+ VATTR_WANTED(&va, va_flags);
+ error = vnode_getattr(srfmp->vp, &va, vfs_context_current());
+ if (error) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+ "vnode_getattr(%p) failed (error=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ error));
+ goto done;
+ }
+
+ if (!(va.va_flags & SF_RESTRICTED)) {
+ /*
+ * CSR is not configured in CSR_ALLOW_UNRESTRICTED_FS mode, and
+ * the shared cache file is NOT SIP-protected, so reject the
+ * mapping request
+ */
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'), "
+ "vnode is not SIP-protected. \n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name));
+ error = EPERM;
+ goto done;
+ }
+ }
+#else /* CONFIG_CSR */
+ /* Devices without SIP/ROSP need to make sure that the shared cache is on the root volume. */
+
+ assert(rdir_vp != NULL);
+ if (srfmp->vp->v_mount != rdir_vp->v_mount) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(%p:'%s'): "
+ "not on process's root volume\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name));
+ error = EPERM;
+ goto done;
+ }
+#endif /* CONFIG_CSR */
+
+ if (scdir_enforce) {
+ /* ensure parent is scdir_vp */
+ assert(*scdir_vp != NULL);
+ if (vnode_parent(srfmp->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(srfmp->vp),
+ srfmp->vp->v_name, scdir_path));
+ error = EPERM;
+ goto done;
+ }
+ }
+
+ /* get vnode size */
+ error = vnode_size(srfmp->vp, &fs, 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));
+ "vnode_size(%p) failed (error=%d)\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp), error));
goto done;
}
+ srfmp->file_size = fs;
- /* ensure parent is scdir_vp */
- if (vnode_parent(vp) != scdir_vp) {
+ /* get the file's memory object handle */
+ srfmp->file_control = ubc_getobject(srfmp->vp, UBC_HOLDOBJECT);
+ if (srfmp->file_control == MEMORY_OBJECT_CONTROL_NULL) {
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;
+ "no memory object\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ (void *)VM_KERNEL_ADDRPERM(srfmp->vp),
+ srfmp->vp->v_name));
+ error = EINVAL;
goto done;
}
+
+ /* 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 < srfmp->mappings_count; i++) {
+ if (srfmp->mappings[i].sms_init_prot & VM_PROT_ZF) {
+ /* zero-filled mapping: not backed by the file */
+ continue;
+ }
+ if (ubc_cs_is_range_codesigned(srfmp->vp,
+ srfmp->mappings[i].sms_file_offset,
+ srfmp->mappings[i].sms_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(srfmp->vp),
+ srfmp->vp->v_name,
+ i, srfmp->mappings_count,
+ srfmp->mappings[i].sms_address,
+ srfmp->mappings[i].sms_size,
+ srfmp->mappings[i].sms_file_offset,
+ srfmp->mappings[i].sms_max_prot,
+ srfmp->mappings[i].sms_init_prot));
+ error = EINVAL;
+ goto done;
+ }
+ }
+ }
+done:
+ if (error != 0) {
+ shared_region_map_and_slide_cleanup(p, files_count, *sr_file_mappings, shared_region, *scdir_vp);
+ *sr_file_mappings = NULL;
+ *shared_region_ptr = NULL;
+ *scdir_vp = NULL;
+ }
+ return error;
+}
+
+/*
+ * shared_region_map_np()
+ *
+ * This system call is intended for dyld.
+ *
+ * dyld uses this to map a shared cache file into a shared region.
+ * This is usually done only the first time a shared cache is needed.
+ * Subsequent processes will just use the populated shared region without
+ * requiring any further setup.
+ */
+static int
+_shared_region_map_and_slide(
+ struct proc *p,
+ uint32_t files_count,
+ struct shared_file_np *files,
+ uint32_t mappings_count,
+ struct shared_file_mapping_slide_np *mappings)
+{
+ int error = 0;
+ kern_return_t kr = KERN_SUCCESS;
+ struct _sr_file_mappings *sr_file_mappings = NULL;
+ struct vnode *scdir_vp = NULL;
+ struct vnode *rdir_vp = NULL;
+ struct vm_shared_region *shared_region = NULL;
+
+ /*
+ * Get a reference to the current proc's root dir.
+ * Need this to prevent racing with chroot.
+ */
+ proc_fdlock(p);
+ rdir_vp = p->p_fd->fd_rdir;
+ if (rdir_vp == NULL) {
+ rdir_vp = rootvnode;
}
+ assert(rdir_vp != NULL);
+ vnode_get(rdir_vp);
+ proc_fdunlock(p);
- /* 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",
- (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;
+ /*
+ * Turn files, mappings into sr_file_mappings and other setup.
+ */
+ error = shared_region_map_and_slide_setup(p, files_count,
+ files, mappings_count, mappings,
+ &sr_file_mappings, &shared_region, &scdir_vp, rdir_vp);
+ if (error != 0) {
+ vnode_put(rdir_vp);
+ return error;
}
- file_size = fs;
- /* get the file's memory object handle */
- file_control = ubc_getobject(vp, UBC_HOLDOBJECT);
- if (file_control == MEMORY_OBJECT_CONTROL_NULL) {
- SHARED_REGION_TRACE_ERROR(
- ("shared_region: %p [%d(%s)] map(%p:'%s'): "
- "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;
+ /* map the file(s) into that shared region's submap */
+ kr = vm_shared_region_map_file(shared_region, files_count, sr_file_mappings);
+ if (kr != KERN_SUCCESS) {
+ SHARED_REGION_TRACE_ERROR(("shared_region: %p [%d(%s)] map(): "
+ "vm_shared_region_map_file() failed kr=0x%x\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm, kr));
}
-
- /* get the process's shared region (setup in vm_map_exec()) */
- shared_region = vm_shared_region_get(current_task());
- if (shared_region == NULL) {
- SHARED_REGION_TRACE_ERROR(
- ("shared_region: %p [%d(%s)] map(%p:'%s'): "
- "no shared region\n",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm,
- (void *)VM_KERNEL_ADDRPERM(vp), vp->v_name));
- goto done;
+ /* convert kern_return_t to errno */
+ switch (kr) {
+ case KERN_SUCCESS:
+ error = 0;
+ break;
+ case KERN_INVALID_ADDRESS:
+ error = EFAULT;
+ break;
+ case KERN_PROTECTION_FAILURE:
+ error = EPERM;
+ break;
+ case KERN_NO_SPACE:
+ error = ENOMEM;
+ break;
+ case KERN_FAILURE:
+ case KERN_INVALID_ARGUMENT:
+ default:
+ error = EINVAL;
+ break;
}
- /* 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,
- slide,
- slide_start,
- slide_size);
- 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",
- (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;
- break;
- case KERN_PROTECTION_FAILURE:
- error = EPERM;
- break;
- case KERN_NO_SPACE:
- error = ENOMEM;
- break;
- case KERN_FAILURE:
- case KERN_INVALID_ARGUMENT:
- default:
- error = EINVAL;
- break;
- }
- goto done;
+ /*
+ * Mark that this process is now using split libraries.
+ */
+ if (error == 0 && (p->p_flag & P_NOSHLIB)) {
+ OSBitAndAtomic(~((uint32_t)P_NOSHLIB), &p->p_flag);
}
- error = 0;
+ vnode_put(rdir_vp);
+ shared_region_map_and_slide_cleanup(p, files_count, sr_file_mappings, shared_region, scdir_vp);
- vnode_lock_spin(vp);
-
- vp->v_flag |= VSHARED_DYLD;
+ SHARED_REGION_TRACE_DEBUG(
+ ("shared_region: %p [%d(%s)] <- map\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm));
- vnode_unlock(vp);
+ return error;
+}
- /* update the vnode's access time */
- if (! (vnode_vfsvisflags(vp) & MNT_NOATIME)) {
- VATTR_INIT(&va);
- nanotime(&va.va_access_time);
- VATTR_SET_ACTIVE(&va, va_access_time);
- vnode_setattr(vp, &va, vfs_context_current());
- }
+/*
+ * Clean up part of _shared_region_map_and_slide()
+ * It had to be broken out of _shared_region_map_and_slide() to
+ * prevent compiler inlining from blowing out the stack.
+ */
+__attribute__((noinline))
+static void
+shared_region_map_and_slide_cleanup(
+ struct proc *p,
+ uint32_t files_count,
+ struct _sr_file_mappings *sr_file_mappings,
+ struct vm_shared_region *shared_region,
+ struct vnode *scdir_vp)
+{
+ struct _sr_file_mappings *srfmp;
+ struct vnode_attr va;
+
+ if (sr_file_mappings != NULL) {
+ for (srfmp = &sr_file_mappings[0]; srfmp < &sr_file_mappings[files_count]; srfmp++) {
+ if (srfmp->vp != NULL) {
+ vnode_lock_spin(srfmp->vp);
+ srfmp->vp->v_flag |= VSHARED_DYLD;
+ vnode_unlock(srfmp->vp);
+
+ /* update the vnode's access time */
+ if (!(vnode_vfsvisflags(srfmp->vp) & MNT_NOATIME)) {
+ VATTR_INIT(&va);
+ nanotime(&va.va_access_time);
+ VATTR_SET_ACTIVE(&va, va_access_time);
+ vnode_setattr(srfmp->vp, &va, vfs_context_current());
+ }
- if (p->p_flag & P_NOSHLIB) {
- /* signal that this process is now using split libraries */
- OSBitAndAtomic(~((uint32_t)P_NOSHLIB), &p->p_flag);
+#if NAMEDSTREAMS
+ /*
+ * If the shared cache is compressed, it may
+ * have a namedstream vnode instantiated for
+ * for it. That namedstream vnode will also
+ * have to be marked with VSHARED_DYLD.
+ */
+ if (vnode_hasnamedstreams(srfmp->vp)) {
+ vnode_t svp;
+ if (vnode_getnamedstream(srfmp->vp, &svp, XATTR_RESOURCEFORK_NAME,
+ NS_OPEN, 0, vfs_context_kernel()) == 0) {
+ vnode_lock_spin(svp);
+ svp->v_flag |= VSHARED_DYLD;
+ vnode_unlock(svp);
+ vnode_put(svp);
+ }
+ }
+#endif /* NAMEDSTREAMS */
+ /*
+ * release the vnode...
+ * ubc_map() still holds it for us in the non-error case
+ */
+ (void) vnode_put(srfmp->vp);
+ srfmp->vp = NULL;
+ }
+ if (srfmp->fp != NULL) {
+ /* release the file descriptor */
+ fp_drop(p, srfmp->fd, srfmp->fp, 0);
+ srfmp->fp = NULL;
+ }
+ }
+ kheap_free(KHEAP_TEMP, sr_file_mappings, files_count * sizeof(*sr_file_mappings));
}
-done:
- if (vp != NULL) {
- /*
- * release the vnode...
- * ubc_map() still holds it for us in the non-error case
- */
- (void) vnode_put(vp);
- vp = NULL;
- }
- if (fp != NULL) {
- /* release the file descriptor */
- 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);
}
+}
- SHARED_REGION_TRACE_DEBUG(
- ("shared_region: %p [%d(%s)] <- map\n",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm));
- return error;
-}
+#define SFM_MAX 1024 /* max mapping structs allowed to pass in */
+/*
+ * This interface is used by dyld to map shared caches which are
+ * for any architecture which doesn't have run time support of pointer
+ * authentication. Note dyld could also use the new ...map_and_slide_2_np()
+ * call for this case, however, it just doesn't do that yet.
+ */
int
shared_region_map_and_slide_np(
- struct proc *p,
- struct shared_region_map_and_slide_np_args *uap,
- __unused int *retvalp)
+ struct proc *p,
+ struct shared_region_map_and_slide_np_args *uap,
+ __unused int *retvalp)
{
- struct shared_file_mapping_np *mappings;
- unsigned int mappings_count = uap->count;
- 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];
-
- /* Is the process chrooted?? */
- if (p->p_fd->fd_rdir != NULL) {
- kr = EINVAL;
- goto done;
- }
-
+ unsigned int mappings_count = uap->count;
+ unsigned int m;
+ uint32_t slide = uap->slide;
+ struct shared_file_np shared_files[1];
+ struct shared_file_mapping_np legacy_mapping;
+ struct shared_file_mapping_slide_np *mappings = NULL;
+ kern_return_t kr = KERN_SUCCESS;
+
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
* for the very first sliding.
*/
if (mappings_count == 0) {
SHARED_REGION_TRACE_INFO(
("shared_region: %p [%d(%s)] map(): "
- "no mappings\n",
- (void *)VM_KERNEL_ADDRPERM(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) {
+ mappings = kheap_alloc(KHEAP_TEMP,
+ mappings_count * sizeof(mappings[0]), Z_WAITOK);
+ if (mappings == NULL) {
+ kr = KERN_RESOURCE_SHORTAGE;
+ goto done;
+ }
+ } else {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(): "
+ "too many mappings (%d) max %d\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ mappings_count, SFM_MAX));
+ kr = KERN_FAILURE;
+ goto done;
+ }
+
+ /*
+ * Read in the mappings and translate to new format.
+ */
+ for (m = 0; m < mappings_count; ++m) {
+ user_addr_t from_uaddr = uap->mappings + (m * sizeof(struct shared_file_mapping_np));
+ kr = shared_region_copyin(p, from_uaddr, 1, sizeof(legacy_mapping), &legacy_mapping);
+ if (kr != 0) {
+ goto done;
+ }
+ mappings[m].sms_address = legacy_mapping.sfm_address;
+ mappings[m].sms_size = legacy_mapping.sfm_size;
+ mappings[m].sms_file_offset = legacy_mapping.sfm_file_offset;
+ mappings[m].sms_max_prot = legacy_mapping.sfm_max_prot;
+ mappings[m].sms_init_prot = legacy_mapping.sfm_init_prot;
+ mappings[m].sms_slide_size = uap->slide_size;
+ mappings[m].sms_slide_start = uap->slide_start;
+ }
+
+ bzero(shared_files, sizeof(shared_files));
+ shared_files[0].sf_fd = uap->fd;
+ shared_files[0].sf_mappings_count = mappings_count;
+ shared_files[0].sf_slide = slide;
+
+ kr = _shared_region_map_and_slide(p,
+ 1, /* # of files to map */
+ &shared_files[0], /* files to map */
+ mappings_count,
+ mappings);
+
+done:
+ if (mappings != NULL) {
+ kheap_free(KHEAP_TEMP, mappings, mappings_count * sizeof(mappings[0]));
+ mappings = NULL;
+ }
+ return kr;
+}
+
+/*
+ * This interface for setting up shared region mappings is what dyld
+ * uses for shared caches that have __AUTH sections. All other shared
+ * caches use the non _2 version.
+ *
+ * The slide used for shared regions setup using this interface is done differently
+ * from the old interface. The slide value passed in the shared_files_np represents
+ * a max value. The kernel will choose a random value based on that, then use it
+ * for all shared regions.
+ */
+#define SLIDE_AMOUNT_MASK ~PAGE_MASK
+
+int
+shared_region_map_and_slide_2_np(
+ struct proc *p,
+ struct shared_region_map_and_slide_2_np_args *uap,
+ __unused int *retvalp)
+{
+ unsigned int files_count;
+ struct shared_file_np *shared_files = NULL;
+ unsigned int mappings_count;
+ struct shared_file_mapping_slide_np *mappings = NULL;
+ kern_return_t kr = KERN_SUCCESS;
+ boolean_t should_slide_mappings = TRUE;
+
+ files_count = uap->files_count;
+ mappings_count = uap->mappings_count;
+
+
+ if (files_count == 0) {
+ SHARED_REGION_TRACE_INFO(
+ ("shared_region: %p [%d(%s)] map(): "
+ "no files\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm));
+ kr = 0; /* no files to map: we're done ! */
goto done;
- } else if (mappings_count <= SFM_MAX_STACK) {
- mappings = &stack_mappings[0];
+ } else if (files_count <= _SR_FILE_MAPPINGS_MAX_FILES) {
+ shared_files = kheap_alloc(KHEAP_TEMP,
+ files_count * sizeof(shared_files[0]), Z_WAITOK);
+ if (shared_files == NULL) {
+ kr = KERN_RESOURCE_SHORTAGE;
+ goto done;
+ }
} else {
SHARED_REGION_TRACE_ERROR(
("shared_region: %p [%d(%s)] map(): "
- "too many mappings (%d)\n",
- (void *)VM_KERNEL_ADDRPERM(current_thread()),
- p->p_pid, p->p_comm,
- mappings_count));
+ "too many files (%d) max %d\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ files_count, _SR_FILE_MAPPINGS_MAX_FILES));
kr = KERN_FAILURE;
goto done;
}
- if ( (kr = shared_region_copyin_mappings(p, uap->mappings, uap->count, mappings))) {
+ if (mappings_count == 0) {
+ SHARED_REGION_TRACE_INFO(
+ ("shared_region: %p [%d(%s)] map(): "
+ "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) {
+ mappings = kheap_alloc(KHEAP_TEMP,
+ mappings_count * sizeof(mappings[0]), Z_WAITOK);
+ if (mappings == NULL) {
+ kr = KERN_RESOURCE_SHORTAGE;
+ goto done;
+ }
+ } else {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(): "
+ "too many mappings (%d) max %d\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm,
+ mappings_count, SFM_MAX));
+ kr = KERN_FAILURE;
goto done;
}
+ kr = shared_region_copyin(p, uap->files, files_count, sizeof(shared_files[0]), shared_files);
+ if (kr != KERN_SUCCESS) {
+ goto done;
+ }
- kr = _shared_region_map_and_slide(p, uap->fd, mappings_count, mappings,
- slide,
- uap->slide_start, uap->slide_size);
+ kr = shared_region_copyin(p, uap->mappings, mappings_count, sizeof(mappings[0]), mappings);
if (kr != KERN_SUCCESS) {
- return kr;
+ goto done;
}
+ if (should_slide_mappings) {
+ uint32_t max_slide = shared_files[0].sf_slide;
+ uint32_t random_val;
+ uint32_t slide_amount;
+
+ if (max_slide != 0) {
+ read_random(&random_val, sizeof random_val);
+ slide_amount = ((random_val % max_slide) & SLIDE_AMOUNT_MASK);
+ } else {
+ slide_amount = 0;
+ }
+
+ /*
+ * Fix up the mappings to reflect the desired slide.
+ */
+ unsigned int f;
+ unsigned int m = 0;
+ unsigned int i;
+ for (f = 0; f < files_count; ++f) {
+ shared_files[f].sf_slide = slide_amount;
+ for (i = 0; i < shared_files[f].sf_mappings_count; ++i, ++m) {
+ if (m >= mappings_count) {
+ SHARED_REGION_TRACE_ERROR(
+ ("shared_region: %p [%d(%s)] map(): "
+ "mapping count argument was too small\n",
+ (void *)VM_KERNEL_ADDRPERM(current_thread()),
+ p->p_pid, p->p_comm));
+ kr = KERN_FAILURE;
+ goto done;
+ }
+ mappings[m].sms_address += slide_amount;
+ if (mappings[m].sms_slide_size != 0) {
+ mappings[i].sms_slide_start += slide_amount;
+ }
+ }
+ }
+ }
+ kr = _shared_region_map_and_slide(p, files_count, shared_files, mappings_count, mappings);
done:
+ if (shared_files != NULL) {
+ kheap_free(KHEAP_TEMP, shared_files, files_count * sizeof(shared_files[0]));
+ shared_files = NULL;
+ }
+ if (mappings != NULL) {
+ kheap_free(KHEAP_TEMP, mappings, mappings_count * sizeof(mappings[0]));
+ mappings = NULL;
+ }
return kr;
}
/* sysctl overflow room */
-SYSCTL_INT (_vm, OID_AUTO, pagesize, CTLFLAG_RD | CTLFLAG_LOCKED,
- (int *) &page_size, 0, "vm page size");
+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
- 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,
- &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
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,
- 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,
- &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,
- &vm_page_purgeable_wired_count, 0, "Wired purgeable page count");
+ &vm_page_purgeable_wired_count, 0, "Wired purgeable page count");
+
+extern unsigned int vm_page_kern_lpage_count;
+SYSCTL_INT(_vm, OID_AUTO, kern_lpage_count, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &vm_page_kern_lpage_count, 0, "kernel used large pages");
+
+#if DEVELOPMENT || DEBUG
+#if __ARM_MIXED_PAGE_SIZE__
+static int vm_mixed_pagesize_supported = 1;
+#else
+static int vm_mixed_pagesize_supported = 0;
+#endif /*__ARM_MIXED_PAGE_SIZE__ */
+SYSCTL_INT(_debug, OID_AUTO, vm_mixed_pagesize_supported, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED,
+ &vm_mixed_pagesize_supported, 0, "kernel support for mixed pagesize");
+
+
+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");
-extern unsigned int vm_pageout_purged_objects;
SYSCTL_INT(_vm, OID_AUTO, pageout_purged_objects, CTLFLAG_RD | CTLFLAG_LOCKED,
- &vm_pageout_purged_objects, 0, "System purged object count");
+ &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 /* DEVELOPMENT || DEBUG */
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*)");
+ &madvise_free_debug, 0, "zero-fill on madvise(MADV_FREE*)");
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,
- &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,
- &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,
- &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,
- &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,
- &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,
- &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,
- &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,
- &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,
- &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,
- &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, "");
+ &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;
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 */
-extern unsigned int vm_pageout_inactive_dirty_internal, vm_pageout_inactive_dirty_external, vm_pageout_inactive_clean, vm_pageout_speculative_clean, vm_pageout_inactive_used;
-extern unsigned int vm_pageout_freed_from_inactive_clean, vm_pageout_freed_from_speculative;
-SYSCTL_UINT(_vm, OID_AUTO, pageout_inactive_dirty_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_inactive_dirty_internal, 0, "");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_inactive_dirty_external, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_inactive_dirty_external, 0, "");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_inactive_clean, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_inactive_clean, 0, "");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_speculative_clean, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_speculative_clean, 0, "");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_inactive_used, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_inactive_used, 0, "");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_freed_from_inactive_clean, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_freed_from_inactive_clean, 0, "");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_freed_from_speculative, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_freed_from_speculative, 0, "");
-
-extern unsigned int vm_pageout_freed_from_cleaned;
-SYSCTL_UINT(_vm, OID_AUTO, pageout_freed_from_cleaned, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_freed_from_cleaned, 0, "");
-
-/* counts of pages entering the cleaned queue */
-extern unsigned int vm_pageout_enqueued_cleaned, vm_pageout_enqueued_cleaned_from_inactive_clean, vm_pageout_enqueued_cleaned_from_inactive_dirty;
-SYSCTL_UINT(_vm, OID_AUTO, pageout_enqueued_cleaned, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_enqueued_cleaned, 0, ""); /* sum of next two */
-SYSCTL_UINT(_vm, OID_AUTO, pageout_enqueued_cleaned_from_inactive_clean, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_enqueued_cleaned_from_inactive_clean, 0, "");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_enqueued_cleaned_from_inactive_dirty, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_enqueued_cleaned_from_inactive_dirty, 0, "");
-
-/* counts of pages leaving the cleaned queue */
-extern unsigned int vm_pageout_cleaned_reclaimed, vm_pageout_cleaned_reactivated, vm_pageout_cleaned_reference_reactivated, vm_pageout_cleaned_volatile_reactivated, vm_pageout_cleaned_fault_reactivated, vm_pageout_cleaned_commit_reactivated, vm_pageout_cleaned_busy, vm_pageout_cleaned_nolock;
-SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_cleaned_reclaimed, 0, "Cleaned pages reclaimed");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_cleaned_reactivated, 0, "Cleaned pages reactivated"); /* sum of all reactivated AND busy and nolock (even though those actually get reDEactivated */
-SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_reference_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_cleaned_reference_reactivated, 0, "Cleaned pages reference reactivated");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_volatile_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED, &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_cleaned_fault_reactivated, 0, "Cleaned pages fault reactivated");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_commit_reactivated, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_cleaned_commit_reactivated, 0, "Cleaned pages commit reactivated");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_busy, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_cleaned_busy, 0, "Cleaned pages busy (deactivated)");
-SYSCTL_UINT(_vm, OID_AUTO, pageout_cleaned_nolock, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_cleaned_nolock, 0, "Cleaned pages no-lock (deactivated)");
+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;
+extern unsigned int vm_page_secluded_count_over_target;
+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, "");
+SYSCTL_UINT(_vm, OID_AUTO, page_secluded_count_over_target, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_secluded_count_over_target, 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) {
+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
- */
+
+ /*
+ * 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
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,
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;
}
}
int
kas_info(struct proc *p,
- struct kas_info_args *uap,
- int *retval __unused)
+ struct kas_info_args *uap,
+ int *retval __unused)
{
-#ifdef SECURE_KERNEL
+#ifndef CONFIG_KAS_INFO
(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;
+#else /* CONFIG_KAS_INFO */
+ int selector = uap->selector;
+ user_addr_t valuep = uap->value;
+ user_addr_t sizep = uap->size;
+ user_size_t size, rsize;
+ int error;
if (!kauth_cred_issuser(kauth_cred_get())) {
return EPERM;
}
switch (selector) {
- case KAS_INFO_KERNEL_TEXT_SLIDE_SELECTOR:
- {
- uint64_t slide = vm_kernel_slide;
+ 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;
- }
- }
+ if (sizeof(slide) != size) {
+ return EINVAL;
+ }
+
+ error = copyout(&slide, valuep, sizeof(slide));
+ if (error) {
+ return error;
+ }
+ rsize = size;
+ }
+ break;
+ case KAS_INFO_KERNEL_SEGMENT_VMADDR_SELECTOR:
+ {
+ uint32_t i;
+ kernel_mach_header_t *mh = &_mh_execute_header;
+ struct load_command *cmd;
+ cmd = (struct load_command*) &mh[1];
+ uint64_t *bases;
+ rsize = mh->ncmds * sizeof(uint64_t);
+
+ /*
+ * Return the size if no data was passed
+ */
+ if (valuep == 0) {
break;
- default:
+ }
+
+ if (rsize > size) {
return EINVAL;
+ }
+
+ bases = kheap_alloc(KHEAP_TEMP, rsize, Z_WAITOK | Z_ZERO);
+
+ for (i = 0; i < mh->ncmds; i++) {
+ if (cmd->cmd == LC_SEGMENT_KERNEL) {
+ __IGNORE_WCASTALIGN(kernel_segment_command_t * sg = (kernel_segment_command_t *) cmd);
+ bases[i] = (uint64_t)sg->vmaddr;
+ }
+ cmd = (struct load_command *) ((uintptr_t) cmd + cmd->cmdsize);
+ }
+
+ error = copyout(bases, valuep, rsize);
+
+ kheap_free(KHEAP_TEMP, bases, rsize);
+
+ if (error) {
+ return error;
+ }
+ }
+ break;
+ default:
+ return EINVAL;
+ }
+
+ if (IS_64BIT_PROCESS(p)) {
+ user64_size_t size64 = (user64_size_t)rsize;
+ error = copyout(&size64, sizep, sizeof(size64));
+ } else {
+ user32_size_t size32 = (user32_size_t)rsize;
+ error = copyout(&size32, sizep, sizeof(size32));
+ }
+
+ return error;
+#endif /* CONFIG_KAS_INFO */
+}
+
+#if __has_feature(ptrauth_calls)
+/*
+ * Generate a random pointer signing key that isn't 0.
+ */
+uint64_t
+generate_jop_key(void)
+{
+ uint64_t key;
+
+ do {
+ read_random(&key, sizeof key);
+ } while (key == 0);
+ return key;
+}
+#endif /* __has_feature(ptrauth_calls) */
+
+
+#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, "");
+
+extern uint32_t vm_page_upl_tainted;
+SYSCTL_UINT(_vm, OID_AUTO, upl_pages_tainted, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_upl_tainted, 0, "");
+
+extern uint32_t vm_page_iopl_tainted;
+SYSCTL_UINT(_vm, OID_AUTO, iopl_pages_tainted, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_iopl_tainted, 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, "");
+
+
+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, "");
+extern int shared_region_destroy_delay;
+SYSCTL_INT(_vm, OID_AUTO, shared_region_destroy_delay,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &shared_region_destroy_delay, 0, "");
+
+#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 */
+
+extern int vm_protect_privileged_from_untrusted;
+SYSCTL_INT(_vm, OID_AUTO, protect_privileged_from_untrusted,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &vm_protect_privileged_from_untrusted, 0, "");
+extern uint64_t vm_copied_on_read;
+SYSCTL_QUAD(_vm, OID_AUTO, copied_on_read,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &vm_copied_on_read, "");
+
+extern int vm_shared_region_count;
+extern int vm_shared_region_peak;
+SYSCTL_INT(_vm, OID_AUTO, shared_region_count,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &vm_shared_region_count, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, shared_region_peak,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &vm_shared_region_peak, 0, "");
+#if DEVELOPMENT || DEBUG
+extern unsigned int shared_region_pagers_resident_count;
+SYSCTL_INT(_vm, OID_AUTO, shared_region_pagers_resident_count,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_pagers_resident_count, 0, "");
+extern unsigned int shared_region_pagers_resident_peak;
+SYSCTL_INT(_vm, OID_AUTO, shared_region_pagers_resident_peak,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_pagers_resident_peak, 0, "");
+extern int shared_region_pager_count;
+SYSCTL_INT(_vm, OID_AUTO, shared_region_pager_count,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_pager_count, 0, "");
+#if __has_feature(ptrauth_calls)
+extern int shared_region_key_count;
+SYSCTL_INT(_vm, OID_AUTO, shared_region_key_count,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &shared_region_key_count, 0, "");
+extern int vm_shared_region_reslide_count;
+SYSCTL_INT(_vm, OID_AUTO, shared_region_reslide_count,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &vm_shared_region_reslide_count, 0, "");
+#endif /* __has_feature(ptrauth_calls) */
+#endif /* DEVELOPMENT || DEBUG */
+
+#if MACH_ASSERT
+extern int debug4k_filter;
+SYSCTL_INT(_vm, OID_AUTO, debug4k_filter, CTLFLAG_RW | CTLFLAG_LOCKED, &debug4k_filter, 0, "");
+extern int debug4k_panic_on_terminate;
+SYSCTL_INT(_vm, OID_AUTO, debug4k_panic_on_terminate, CTLFLAG_RW | CTLFLAG_LOCKED, &debug4k_panic_on_terminate, 0, "");
+extern int debug4k_panic_on_exception;
+SYSCTL_INT(_vm, OID_AUTO, debug4k_panic_on_exception, CTLFLAG_RW | CTLFLAG_LOCKED, &debug4k_panic_on_exception, 0, "");
+extern int debug4k_panic_on_misaligned_sharing;
+SYSCTL_INT(_vm, OID_AUTO, debug4k_panic_on_misaligned_sharing, CTLFLAG_RW | CTLFLAG_LOCKED, &debug4k_panic_on_misaligned_sharing, 0, "");
+#endif /* MACH_ASSERT */
+
+/*
+ * A sysctl which causes all existing shared regions to become stale. They
+ * will no longer be used by anything new and will be torn down as soon as
+ * the last existing user exits. A write of non-zero value causes that to happen.
+ * This should only be used by launchd, so we check that this is initproc.
+ */
+static int
+shared_region_pivot(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
+{
+ unsigned int value = 0;
+ int changed = 0;
+ int error = sysctl_io_number(req, 0, sizeof(value), &value, &changed);
+ if (error || !changed) {
+ return error;
+ }
+ if (current_proc() != initproc) {
+ return EPERM;
}
+ vm_shared_region_pivot();
+
return 0;
-#endif /* !SECURE_KERNEL */
}
+
+SYSCTL_PROC(_vm, OID_AUTO, shared_region_pivot,
+ CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED,
+ 0, 0, shared_region_pivot, "I", "");
+
+extern int vm_remap_old_path, vm_remap_new_path;
+SYSCTL_INT(_vm, OID_AUTO, remap_old_path,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &vm_remap_old_path, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, remap_new_path,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &vm_remap_new_path, 0, "");
projects / apple / xnu.git / blobdiff