/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, 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,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * 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
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * 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,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_FREE_COPYRIGHT@
* improvements that they make and grant CSL redistribution rights.
*
*/
+/*
+ * NOTICE: This file was modified by McAfee Research in 2004 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ * Copyright (c) 2005 SPARTA, Inc.
+ */
#include <mach_kdb.h>
-#include <mach_host.h>
-#include <mach_prof.h>
#include <fast_tas.h>
#include <platforms.h>
#include <kern/host.h>
#include <kern/clock.h>
#include <kern/timer.h>
-#include <kern/profile.h>
#include <kern/assert.h>
#include <kern/sync_lock.h>
+#include <kern/affinity.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h> /* for kernel_map, ipc_kernel_map */
#include <vm/vm_pageout.h>
-#include <vm/vm_protos.h> /* for vm_map_remove_commpage64 */
+#include <vm/vm_protos.h>
#if MACH_KDB
#include <ddb/db_sym.h>
#include <mach/mach_host_server.h>
#include <mach/host_security_server.h>
#include <mach/mach_port_server.h>
+#include <mach/security_server.h>
+
+#include <vm/vm_shared_region.h>
-#include <vm/task_working_set.h>
-#include <vm/vm_shared_memory_server.h>
+#if CONFIG_MACF_MACH
+#include <security/mac_mach_internal.h>
+#endif
task_t kernel_task;
zone_t task_zone;
return;
}
-void
-task_working_set_disable(task_t task)
-{
- struct tws_hash *ws;
-
- task_lock(task);
- ws = task->dynamic_working_set;
- task->dynamic_working_set = NULL;
- task_unlock(task);
- if (ws) {
- tws_hash_ws_flush(ws);
- tws_hash_destroy(ws);
- }
-}
void
task_set_64bit(
task_t task,
boolean_t is64bit)
{
- if(is64bit) {
- /* LP64todo - no task working set for 64-bit */
+#ifdef __i386__
+ thread_t thread;
+#endif /* __i386__ */
+ int vm_flags = 0;
+
+ if (is64bit) {
+ if (task_has_64BitAddr(task))
+ return;
+
task_set_64BitAddr(task);
- task_working_set_disable(task);
- task->map->max_offset = MACH_VM_MAX_ADDRESS;
} else {
+ if ( !task_has_64BitAddr(task))
+ return;
+
/*
* Deallocate all memory previously allocated
* above the 32-bit address space, since it won't
* be accessible anymore.
*/
- /* LP64todo - make this clean */
+ /* remove regular VM map entries & pmap mappings */
+ (void) vm_map_remove(task->map,
+ (vm_map_offset_t) VM_MAX_ADDRESS,
+ MACH_VM_MAX_ADDRESS,
+ 0);
#ifdef __ppc__
- vm_map_remove_commpage64(task->map);
+ /* LP64todo - make this clean */
+ /*
+ * PPC51: ppc64 is limited to 51-bit addresses.
+ * Memory mapped above that limit is handled specially
+ * at the pmap level, so let pmap clean the commpage mapping
+ * explicitly...
+ */
pmap_unmap_sharedpage(task->map->pmap); /* Unmap commpage */
-#endif
+ /* ... and avoid regular pmap cleanup */
+ vm_flags |= VM_MAP_REMOVE_NO_PMAP_CLEANUP;
+#endif /* __ppc__ */
+ /* remove the higher VM mappings */
(void) vm_map_remove(task->map,
- (vm_map_offset_t) VM_MAX_ADDRESS,
MACH_VM_MAX_ADDRESS,
- VM_MAP_NO_FLAGS);
+ 0xFFFFFFFFFFFFF000ULL,
+ vm_flags);
task_clear_64BitAddr(task);
- task->map->max_offset = (vm_map_offset_t)VM_MAX_ADDRESS;
}
+ /* FIXME: On x86, the thread save state flavor can diverge from the
+ * task's 64-bit feature flag due to the 32-bit/64-bit register save
+ * state dichotomy. Since we can be pre-empted in this interval,
+ * certain routines may observe the thread as being in an inconsistent
+ * state with respect to its task's 64-bitness.
+ */
+#ifdef __i386__
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ machine_thread_switch_addrmode(thread);
+ }
+#endif /* __i386__ */
}
void
/*
* Create the kernel task as the first task.
*/
- if (task_create_internal(TASK_NULL, FALSE, &kernel_task) != KERN_SUCCESS)
+ if (task_create_internal(TASK_NULL, FALSE, FALSE, &kernel_task) != KERN_SUCCESS)
panic("task_init\n");
vm_map_deallocate(kernel_task->map);
kernel_task->map = kernel_map;
}
-#if MACH_HOST
-
-#if 0
-static void
-task_freeze(
- task_t task)
-{
- task_lock(task);
- /*
- * If may_assign is false, task is already being assigned,
- * wait for that to finish.
- */
- while (task->may_assign == FALSE) {
- wait_result_t res;
-
- task->assign_active = TRUE;
- res = thread_sleep_mutex((event_t) &task->assign_active,
- &task->lock, THREAD_UNINT);
- assert(res == THREAD_AWAKENED);
- }
- task->may_assign = FALSE;
- task_unlock(task);
- return;
-}
-#else
-#define thread_freeze(thread) assert(task->processor_set == &default_pset)
-#endif
-
-#if 0
-static void
-task_unfreeze(
- task_t task)
-{
- task_lock(task);
- assert(task->may_assign == FALSE);
- task->may_assign = TRUE;
- if (task->assign_active == TRUE) {
- task->assign_active = FALSE;
- thread_wakeup((event_t)&task->assign_active);
- }
- task_unlock(task);
- return;
-}
-#else
-#define thread_unfreeze(thread) assert(task->processor_set == &default_pset)
-#endif
-
-#endif /* MACH_HOST */
-
/*
* Create a task running in the kernel address space. It may
* have its own map of size mem_size and may have ipc privileges.
kern_return_t
task_create(
- task_t parent_task,
+ task_t parent_task,
__unused ledger_port_array_t ledger_ports,
- __unused mach_msg_type_number_t num_ledger_ports,
- boolean_t inherit_memory,
- task_t *child_task) /* OUT */
+ __unused mach_msg_type_number_t num_ledger_ports,
+ __unused boolean_t inherit_memory,
+ __unused task_t *child_task) /* OUT */
{
if (parent_task == TASK_NULL)
return(KERN_INVALID_ARGUMENT);
- return task_create_internal(
- parent_task, inherit_memory, child_task);
+ /*
+ * No longer supported: too many calls assume that a task has a valid
+ * process attached.
+ */
+ return(KERN_FAILURE);
}
kern_return_t
host_security_create_task_token(
host_security_t host_security,
- task_t parent_task,
- security_token_t sec_token,
- audit_token_t audit_token,
- host_priv_t host_priv,
+ task_t parent_task,
+ __unused security_token_t sec_token,
+ __unused audit_token_t audit_token,
+ __unused host_priv_t host_priv,
__unused ledger_port_array_t ledger_ports,
__unused mach_msg_type_number_t num_ledger_ports,
- boolean_t inherit_memory,
- task_t *child_task) /* OUT */
+ __unused boolean_t inherit_memory,
+ __unused task_t *child_task) /* OUT */
{
- kern_return_t result;
-
if (parent_task == TASK_NULL)
return(KERN_INVALID_ARGUMENT);
if (host_security == HOST_NULL)
return(KERN_INVALID_SECURITY);
- result = task_create_internal(
- parent_task, inherit_memory, child_task);
-
- if (result != KERN_SUCCESS)
- return(result);
-
- result = host_security_set_task_token(host_security,
- *child_task,
- sec_token,
- audit_token,
- host_priv);
-
- if (result != KERN_SUCCESS)
- return(result);
-
- return(result);
+ /*
+ * No longer supported.
+ */
+ return(KERN_FAILURE);
}
kern_return_t
task_create_internal(
task_t parent_task,
boolean_t inherit_memory,
+ boolean_t is_64bit,
task_t *child_task) /* OUT */
{
- task_t new_task;
- processor_set_t pset;
+ task_t new_task;
+ vm_shared_region_t shared_region;
new_task = (task_t) zalloc(task_zone);
if (inherit_memory)
new_task->map = vm_map_fork(parent_task->map);
else
- new_task->map = vm_map_create(pmap_create(0),
+ new_task->map = vm_map_create(pmap_create(0, is_64bit),
(vm_map_offset_t)(VM_MIN_ADDRESS),
(vm_map_offset_t)(VM_MAX_ADDRESS), TRUE);
+ /* Inherit memlock limit from parent */
+ if (parent_task)
+ vm_map_set_user_wire_limit(new_task->map, parent_task->map->user_wire_limit);
+
mutex_init(&new_task->lock, 0);
queue_init(&new_task->threads);
new_task->suspend_count = 0;
new_task->user_stop_count = 0;
new_task->role = TASK_UNSPECIFIED;
new_task->active = TRUE;
- new_task->user_data = 0;
+ new_task->user_data = NULL;
new_task->faults = 0;
new_task->cow_faults = 0;
new_task->pageins = 0;
new_task->syscalls_mach = 0;
new_task->priv_flags = 0;
new_task->syscalls_unix=0;
- new_task->csw=0;
+ new_task->c_switch = new_task->p_switch = new_task->ps_switch = 0;
new_task->taskFeatures[0] = 0; /* Init task features */
new_task->taskFeatures[1] = 0; /* Init task features */
- new_task->dynamic_working_set = 0;
-
- task_working_set_create(new_task, TWS_SMALL_HASH_LINE_COUNT,
- 0, TWS_HASH_STYLE_DEFAULT);
#ifdef MACH_BSD
- new_task->bsd_info = 0;
+ new_task->bsd_info = NULL;
#endif /* MACH_BSD */
+#ifdef __i386__
+ new_task->i386_ldt = 0;
+#endif
+
#ifdef __ppc__
if(BootProcInfo.pf.Available & pf64Bit) new_task->taskFeatures[0] |= tf64BitData; /* If 64-bit machine, show we have 64-bit registers at least */
#endif
new_task->semaphores_owned = 0;
new_task->lock_sets_owned = 0;
-#if MACH_HOST
- new_task->may_assign = TRUE;
- new_task->assign_active = FALSE;
-#endif /* MACH_HOST */
+#if CONFIG_MACF_MACH
+ /*mutex_init(&new_task->labellock, ETAP_NO_TRACE);*/
+ new_task->label = labelh_new(1);
+ mac_task_label_init (&new_task->maclabel);
+#endif
ipc_task_init(new_task, parent_task);
new_task->total_user_time = 0;
new_task->total_system_time = 0;
- task_prof_init(new_task);
+ new_task->vtimers = 0;
- if (parent_task != TASK_NULL) {
-#if MACH_HOST
- /*
- * Freeze the parent, so that parent_task->processor_set
- * cannot change.
- */
- task_freeze(parent_task);
-#endif /* MACH_HOST */
- pset = parent_task->processor_set;
- if (!pset->active)
- pset = &default_pset;
+ new_task->shared_region = NULL;
+ new_task->affinity_space = NULL;
+
+ if (parent_task != TASK_NULL) {
new_task->sec_token = parent_task->sec_token;
new_task->audit_token = parent_task->audit_token;
- shared_region_mapping_ref(parent_task->system_shared_region);
- new_task->system_shared_region = parent_task->system_shared_region;
+ /* inherit the parent's shared region */
+ shared_region = vm_shared_region_get(parent_task);
+ vm_shared_region_set(new_task, shared_region);
new_task->wired_ledger_port = ledger_copy(
convert_port_to_ledger(parent_task->wired_ledger_port));
convert_port_to_ledger(parent_task->paged_ledger_port));
if(task_has_64BitAddr(parent_task))
task_set_64BitAddr(new_task);
+
+#ifdef __i386__
+ if (inherit_memory && parent_task->i386_ldt)
+ new_task->i386_ldt = user_ldt_copy(parent_task->i386_ldt);
+#endif
+ if (inherit_memory && parent_task->affinity_space)
+ task_affinity_create(parent_task, new_task);
}
else {
- pset = &default_pset;
-
new_task->sec_token = KERNEL_SECURITY_TOKEN;
new_task->audit_token = KERNEL_AUDIT_TOKEN;
new_task->wired_ledger_port = ledger_copy(root_wired_ledger);
new_task->priority = BASEPRI_DEFAULT;
new_task->max_priority = MAXPRI_USER;
}
-
- pset_lock(pset);
- pset_add_task(pset, new_task);
- pset_unlock(pset);
-#if MACH_HOST
- if (parent_task != TASK_NULL)
- task_unfreeze(parent_task);
-#endif /* MACH_HOST */
+
+ mutex_lock(&tasks_threads_lock);
+ queue_enter(&tasks, new_task, task_t, tasks);
+ tasks_count++;
+ mutex_unlock(&tasks_threads_lock);
if (vm_backing_store_low && parent_task != NULL)
new_task->priv_flags |= (parent_task->priv_flags&VM_BACKING_STORE_PRIV);
task_deallocate(
task_t task)
{
- processor_set_t pset;
-
if (task == TASK_NULL)
return;
if (task_deallocate_internal(task) > 0)
return;
- pset = task->processor_set;
- pset_deallocate(pset);
-
- if(task->dynamic_working_set)
- tws_hash_destroy(task->dynamic_working_set);
-
ipc_task_terminate(task);
+ if (task->affinity_space)
+ task_affinity_deallocate(task);
+
vm_map_deallocate(task->map);
is_release(task->itk_space);
- task_prof_deallocate(task);
+#if CONFIG_MACF_MACH
+ labelh_release(task->label);
+#endif
zfree(task_zone, task);
}
+/*
+ * task_name_deallocate:
+ *
+ * Drop a reference on a task name.
+ */
+void
+task_name_deallocate(
+ task_name_t task_name)
+{
+ return(task_deallocate((task_t)task_name));
+}
+
+
/*
* task_terminate:
*
task_terminate_internal(
task_t task)
{
- processor_set_t pset;
thread_t thread, self;
task_t self_task;
boolean_t interrupt_save;
*/
ipc_space_destroy(task->itk_space);
-/* LP64todo - make this clean */
#ifdef __ppc__
- vm_map_remove_commpage64(task->map);
+ /* LP64todo - make this clean */
+ /*
+ * PPC51: ppc64 is limited to 51-bit addresses.
+ */
pmap_unmap_sharedpage(task->map->pmap); /* Unmap commpage */
-#endif
+#endif /* __ppc__ */
+
+ if (vm_map_has_4GB_pagezero(task->map))
+ vm_map_clear_4GB_pagezero(task->map);
/*
* If the current thread is a member of the task
* expense of removing the address space regions
* at reap time, we do it explictly here.
*/
- vm_map_remove(task->map, task->map->min_offset,
- task->map->max_offset, VM_MAP_NO_FLAGS);
+ vm_map_remove(task->map,
+ task->map->min_offset,
+ task->map->max_offset,
+ VM_MAP_NO_FLAGS);
- shared_region_mapping_dealloc(task->system_shared_region);
+ /* release our shared region */
+ vm_shared_region_set(task, NULL);
- /*
- * Flush working set here to avoid I/O in reaper thread
- */
- if (task->dynamic_working_set)
- tws_hash_ws_flush(task->dynamic_working_set);
-
- pset = task->processor_set;
- pset_lock(pset);
- pset_remove_task(pset,task);
- pset_unlock(pset);
+ mutex_lock(&tasks_threads_lock);
+ queue_remove(&tasks, task, task_t, tasks);
+ tasks_count--;
+ mutex_unlock(&tasks_threads_lock);
/*
* We no longer need to guard against being aborted, so restore
mach_msg_type_number_t *count)
{
mach_msg_type_number_t actual;
- thread_t *threads;
+ thread_t *thread_list;
thread_t thread;
vm_size_t size, size_needed;
void *addr;
if (task == TASK_NULL)
return (KERN_INVALID_ARGUMENT);
- size = 0; addr = 0;
+ size = 0; addr = NULL;
for (;;) {
task_lock(task);
}
/* OK, have memory and the task is locked & active */
- threads = (thread_t *)addr;
+ thread_list = (thread_t *)addr;
i = j = 0;
for (thread = (thread_t)queue_first(&task->threads); i < actual;
++i, thread = (thread_t)queue_next(&thread->task_threads)) {
thread_reference_internal(thread);
- threads[j++] = thread;
+ thread_list[j++] = thread;
}
assert(queue_end(&task->threads, (queue_entry_t)thread));
if (actual == 0) {
/* no threads, so return null pointer and deallocate memory */
- *threads_out = 0;
+ *threads_out = NULL;
*count = 0;
if (size != 0)
newaddr = kalloc(size_needed);
if (newaddr == 0) {
for (i = 0; i < actual; ++i)
- thread_deallocate(threads[i]);
+ thread_deallocate(thread_list[i]);
kfree(addr, size);
return (KERN_RESOURCE_SHORTAGE);
}
bcopy(addr, newaddr, size_needed);
kfree(addr, size);
- threads = (thread_t *)newaddr;
+ thread_list = (thread_t *)newaddr;
}
- *threads_out = threads;
+ *threads_out = thread_list;
*count = actual;
/* do the conversion that Mig should handle */
for (i = 0; i < actual; ++i)
- ((ipc_port_t *) threads)[i] = convert_thread_to_port(threads[i]);
+ ((ipc_port_t *) thread_list)[i] = convert_thread_to_port(thread_list[i]);
}
return (KERN_SUCCESS);
switch (flavor) {
case TASK_BASIC_INFO_32:
+ case TASK_BASIC2_INFO_32:
{
task_basic_info_32_t basic_info;
vm_map_t map;
map = (task == kernel_task)? kernel_map: task->map;
basic_info->virtual_size = CAST_DOWN(vm_offset_t,map->size);
- basic_info->resident_size = pmap_resident_count(map->pmap)
- * PAGE_SIZE;
+ if (flavor == TASK_BASIC2_INFO_32) {
+ /*
+ * The "BASIC2" flavor gets the maximum resident
+ * size instead of the current resident size...
+ */
+ basic_info->resident_size = pmap_resident_max(map->pmap);
+ } else {
+ basic_info->resident_size = pmap_resident_count(map->pmap);
+ }
+ basic_info->resident_size *= PAGE_SIZE;
task_lock(task);
basic_info->policy = ((task != kernel_task)?
POLICY_TIMESHARE: POLICY_RR);
basic_info->suspend_count = task->user_stop_count;
- absolutetime_to_microtime(
- task->total_user_time,
- &basic_info->user_time.seconds,
- &basic_info->user_time.microseconds);
- absolutetime_to_microtime(
- task->total_system_time,
- &basic_info->system_time.seconds,
- &basic_info->system_time.microseconds);
+ absolutetime_to_microtime(task->total_user_time,
+ (unsigned *)&basic_info->user_time.seconds,
+ (unsigned *)&basic_info->user_time.microseconds);
+ absolutetime_to_microtime(task->total_system_time,
+ (unsigned *)&basic_info->system_time.seconds,
+ (unsigned *)&basic_info->system_time.microseconds);
task_unlock(task);
*task_info_count = TASK_BASIC_INFO_32_COUNT;
map = (task == kernel_task)? kernel_map: task->map;
basic_info->virtual_size = map->size;
- basic_info->resident_size = (mach_vm_size_t)(pmap_resident_count(map->pmap)
- * PAGE_SIZE);
+ basic_info->resident_size =
+ (mach_vm_size_t)(pmap_resident_count(map->pmap))
+ * PAGE_SIZE_64;
task_lock(task);
basic_info->policy = ((task != kernel_task)?
POLICY_TIMESHARE: POLICY_RR);
basic_info->suspend_count = task->user_stop_count;
- absolutetime_to_microtime(
- task->total_user_time,
- &basic_info->user_time.seconds,
- &basic_info->user_time.microseconds);
- absolutetime_to_microtime(
- task->total_system_time,
- &basic_info->system_time.seconds,
- &basic_info->system_time.microseconds);
+ absolutetime_to_microtime(task->total_user_time,
+ (unsigned *)&basic_info->user_time.seconds,
+ (unsigned *)&basic_info->user_time.microseconds);
+ absolutetime_to_microtime(task->total_system_time,
+ (unsigned *)&basic_info->system_time.seconds,
+ (unsigned *)&basic_info->system_time.microseconds);
task_unlock(task);
*task_info_count = TASK_BASIC_INFO_64_COUNT;
case TASK_EVENTS_INFO:
{
register task_events_info_t events_info;
+ register thread_t thread;
if (*task_info_count < TASK_EVENTS_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
events_info = (task_events_info_t) task_info_out;
task_lock(task);
+
events_info->faults = task->faults;
events_info->pageins = task->pageins;
events_info->cow_faults = task->cow_faults;
events_info->messages_received = task->messages_received;
events_info->syscalls_mach = task->syscalls_mach;
events_info->syscalls_unix = task->syscalls_unix;
- events_info->csw = task->csw;
+
+ events_info->csw = task->c_switch;
+
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ events_info->csw += thread->c_switch;
+ }
+
task_unlock(task);
*task_info_count = TASK_EVENTS_INFO_COUNT;
break;
}
+ case TASK_AFFINITY_TAG_INFO:
+ {
+ if (*task_info_count < TASK_AFFINITY_TAG_INFO_COUNT)
+ return (KERN_INVALID_ARGUMENT);
+
+ return task_affinity_info(task, task_info_out, task_info_count);
+ }
default:
return (KERN_INVALID_ARGUMENT);
return (KERN_SUCCESS);
}
+void
+task_vtimer_set(
+ task_t task,
+ integer_t which)
+{
+ thread_t thread;
+
+ /* assert(task == current_task()); */ /* bogus assert 4803227 4807483 */
+
+ task_lock(task);
+
+ task->vtimers |= which;
+
+ switch (which) {
+
+ case TASK_VTIMER_USER:
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ thread->vtimer_user_save = timer_grab(&thread->user_timer);
+ }
+ break;
+
+ case TASK_VTIMER_PROF:
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ thread->vtimer_prof_save = timer_grab(&thread->user_timer);
+ thread->vtimer_prof_save += timer_grab(&thread->system_timer);
+ }
+ break;
+
+ case TASK_VTIMER_RLIM:
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ thread->vtimer_rlim_save = timer_grab(&thread->user_timer);
+ thread->vtimer_rlim_save += timer_grab(&thread->system_timer);
+ }
+ break;
+ }
+
+ task_unlock(task);
+}
+
+void
+task_vtimer_clear(
+ task_t task,
+ integer_t which)
+{
+ assert(task == current_task());
+
+ task_lock(task);
+
+ task->vtimers &= ~which;
+
+ task_unlock(task);
+}
+
+void
+task_vtimer_update(
+__unused
+ task_t task,
+ integer_t which,
+ uint32_t *microsecs)
+{
+ thread_t thread = current_thread();
+ uint32_t tdelt, secs;
+ uint64_t tsum;
+
+ assert(task == current_task());
+
+ assert(task->vtimers & which);
+
+ tdelt = secs = 0;
+
+ switch (which) {
+
+ case TASK_VTIMER_USER:
+ tdelt = timer_delta(&thread->user_timer,
+ &thread->vtimer_user_save);
+ break;
+
+ case TASK_VTIMER_PROF:
+ tsum = timer_grab(&thread->user_timer);
+ tsum += timer_grab(&thread->system_timer);
+ tdelt = tsum - thread->vtimer_prof_save;
+ thread->vtimer_prof_save = tsum;
+ break;
+
+ case TASK_VTIMER_RLIM:
+ tsum = timer_grab(&thread->user_timer);
+ tsum += timer_grab(&thread->system_timer);
+ tdelt = tsum - thread->vtimer_rlim_save;
+ thread->vtimer_rlim_save = tsum;
+ break;
+ }
+
+ absolutetime_to_microtime(tdelt, &secs, microsecs);
+}
+
/*
* task_assign:
*
task_t task,
boolean_t assign_threads)
{
- return (task_assign(task, &default_pset, assign_threads));
+ return (task_assign(task, &pset0, assign_threads));
}
/*
if (!task->active)
return(KERN_FAILURE);
- *pset = task->processor_set;
- pset_reference(*pset);
- return(KERN_SUCCESS);
+ *pset = &pset0;
+
+ return (KERN_SUCCESS);
}
if (task != TASK_NULL)
task_reference_internal(task);
}
+
+#if CONFIG_MACF_MACH
+/*
+ * Protect 2 task labels against modification by adding a reference on
+ * both label handles. The locks do not actually have to be held while
+ * using the labels as only labels with one reference can be modified
+ * in place.
+ */
+
+void
+tasklabel_lock2(
+ task_t a,
+ task_t b)
+{
+ labelh_reference(a->label);
+ labelh_reference(b->label);
+}
+
+void
+tasklabel_unlock2(
+ task_t a,
+ task_t b)
+{
+ labelh_release(a->label);
+ labelh_release(b->label);
+}
+
+void
+mac_task_label_update_internal(
+ struct label *pl,
+ struct task *task)
+{
+
+ tasklabel_lock(task);
+ task->label = labelh_modify(task->label);
+ mac_task_label_update(pl, &task->maclabel);
+ tasklabel_unlock(task);
+ ip_lock(task->itk_self);
+ mac_port_label_update_cred(pl, &task->itk_self->ip_label);
+ ip_unlock(task->itk_self);
+}
+
+void
+mac_task_label_modify(
+ struct task *task,
+ void *arg,
+ void (*f) (struct label *l, void *arg))
+{
+
+ tasklabel_lock(task);
+ task->label = labelh_modify(task->label);
+ (*f)(&task->maclabel, arg);
+ tasklabel_unlock(task);
+}
+
+struct label *
+mac_task_get_label(struct task *task)
+{
+ return (&task->maclabel);
+}
+#endif
projects / apple / xnu.git / blobdiff