#include <kern/misc_protos.h>
#include <kern/sched.h>
#include <kern/processor.h>
-#include <kern/mach_node.h> // mach_node_port_changed()
+#include <kern/mach_node.h> // mach_node_port_changed()
#include <vm/vm_map.h>
#include <vm/vm_purgeable_internal.h>
#include <vm/vm_pageout.h>
+#include <IOKit/IOBSD.h> // IOTaskHasEntitlement
+#include <IOKit/IOKitKeys.h> // DriverKit entitlement strings
+
#if CONFIG_ATM
#include <atm/atm_internal.h>
#include <pexpert/pexpert.h>
+vm_statistics64_data_t PERCPU_DATA(vm_stat);
+uint64_t PERCPU_DATA(vm_page_grab_count);
+
host_data_t realhost;
vm_extmod_statistics_data_t host_extmod_statistics;
kern_return_t
host_processors(host_priv_t host_priv, processor_array_t * out_array, mach_msg_type_number_t * countp)
{
- processor_t processor, *tp;
- void * addr;
- unsigned int count, i;
-
- if (host_priv == HOST_PRIV_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host_priv == HOST_PRIV_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
assert(host_priv == &realhost);
- count = processor_count;
+ unsigned int count = processor_count;
assert(count != 0);
- addr = kalloc((vm_size_t)(count * sizeof(mach_port_t)));
- if (addr == 0)
- return (KERN_RESOURCE_SHORTAGE);
+ static_assert(sizeof(mach_port_t) == sizeof(processor_t));
- tp = (processor_t *)addr;
- *tp++ = processor = processor_list;
-
- if (count > 1) {
- simple_lock(&processor_list_lock);
+ mach_port_t* ports = kalloc((vm_size_t)(count * sizeof(mach_port_t)));
+ if (!ports) {
+ return KERN_RESOURCE_SHORTAGE;
+ }
- for (i = 1; i < count; i++)
- *tp++ = processor = processor->processor_list;
+ for (unsigned int i = 0; i < count; i++) {
+ processor_t processor = processor_array[i];
+ assert(processor != PROCESSOR_NULL);
- simple_unlock(&processor_list_lock);
+ /* do the conversion that Mig should handle */
+ ipc_port_t processor_port = convert_processor_to_port(processor);
+ ports[i] = processor_port;
}
*countp = count;
- *out_array = (processor_array_t)addr;
+ *out_array = (processor_array_t)ports;
- /* do the conversion that Mig should handle */
- tp = (processor_t *)addr;
- for (i = 0; i < count; i++)
- ((mach_port_t *)tp)[i] = (mach_port_t)convert_processor_to_port(tp[i]);
-
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
+extern int sched_allow_NO_SMT_threads;
+
kern_return_t
host_info(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count)
{
- if (host == HOST_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host == HOST_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
switch (flavor) {
case HOST_BASIC_INFO: {
host_basic_info_t basic_info;
- int master_id;
+ int master_id = master_processor->cpu_id;
/*
* Basic information about this host.
*/
- if (*count < HOST_BASIC_INFO_OLD_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_BASIC_INFO_OLD_COUNT) {
+ return KERN_FAILURE;
+ }
basic_info = (host_basic_info_t)info;
basic_info->memory_size = machine_info.memory_size;
- basic_info->max_cpus = machine_info.max_cpus;
- basic_info->avail_cpus = processor_avail_count;
- master_id = master_processor->cpu_id;
basic_info->cpu_type = slot_type(master_id);
basic_info->cpu_subtype = slot_subtype(master_id);
+ basic_info->max_cpus = machine_info.max_cpus;
+#if defined(__x86_64__)
+ if (sched_allow_NO_SMT_threads && current_task()->t_flags & TF_NO_SMT) {
+ basic_info->avail_cpus = primary_processor_avail_count_user;
+ } else {
+ basic_info->avail_cpus = processor_avail_count_user;
+ }
+#else
+ basic_info->avail_cpus = processor_avail_count;
+#endif
+
if (*count >= HOST_BASIC_INFO_COUNT) {
basic_info->cpu_threadtype = slot_threadtype(master_id);
basic_info->physical_cpu = machine_info.physical_cpu;
basic_info->physical_cpu_max = machine_info.physical_cpu_max;
+#if defined(__x86_64__)
+ basic_info->logical_cpu = basic_info->avail_cpus;
+#else
basic_info->logical_cpu = machine_info.logical_cpu;
+#endif
basic_info->logical_cpu_max = machine_info.logical_cpu_max;
+
basic_info->max_mem = machine_info.max_mem;
*count = HOST_BASIC_INFO_COUNT;
*count = HOST_BASIC_INFO_OLD_COUNT;
}
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
case HOST_SCHED_INFO: {
/*
* Return scheduler information.
*/
- if (*count < HOST_SCHED_INFO_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_SCHED_INFO_COUNT) {
+ return KERN_FAILURE;
+ }
sched_info = (host_sched_info_t)info;
*count = HOST_SCHED_INFO_COUNT;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
case HOST_RESOURCE_SIZES: {
/*
* Return sizes of kernel data structures
*/
- if (*count < HOST_RESOURCE_SIZES_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_RESOURCE_SIZES_COUNT) {
+ return KERN_FAILURE;
+ }
/* XXX Fail until ledgers are implemented */
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
case HOST_PRIORITY_INFO: {
host_priority_info_t priority_info;
- if (*count < HOST_PRIORITY_INFO_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_PRIORITY_INFO_COUNT) {
+ return KERN_FAILURE;
+ }
priority_info = (host_priority_info_t)info;
*count = HOST_PRIORITY_INFO_COUNT;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
case HOST_MACH_MSG_TRAP:
case HOST_SEMAPHORE_TRAPS: {
*count = 0;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
case HOST_CAN_HAS_DEBUGGER: {
host_can_has_debugger_info_t can_has_debugger_info;
- if (*count < HOST_CAN_HAS_DEBUGGER_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_CAN_HAS_DEBUGGER_COUNT) {
+ return KERN_FAILURE;
+ }
can_has_debugger_info = (host_can_has_debugger_info_t)info;
can_has_debugger_info->can_has_debugger = PE_i_can_has_debugger(NULL);
}
case HOST_VM_PURGABLE: {
- if (*count < HOST_VM_PURGABLE_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_VM_PURGABLE_COUNT) {
+ return KERN_FAILURE;
+ }
vm_purgeable_stats((vm_purgeable_info_t)info, NULL);
*count = HOST_VM_PURGABLE_COUNT;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
case HOST_DEBUG_INFO_INTERNAL: {
#if DEVELOPMENT || DEBUG
- if (*count < HOST_DEBUG_INFO_INTERNAL_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_DEBUG_INFO_INTERNAL_COUNT) {
+ return KERN_FAILURE;
+ }
host_debug_info_internal_t debug_info = (host_debug_info_internal_t)info;
bzero(debug_info, sizeof(host_debug_info_internal_data_t));
#if CONFIG_COALITIONS
debug_info->config_coalitions = 1;
#endif
-#if CONFIG_BANK
debug_info->config_bank = 1;
-#endif
#if CONFIG_ATM
debug_info->config_atm = 1;
#endif
#if CONFIG_CSR
debug_info->config_csr = 1;
#endif
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
#else /* DEVELOPMENT || DEBUG */
- return (KERN_NOT_SUPPORTED);
+ return KERN_NOT_SUPPORTED;
+#endif
+ }
+
+ case HOST_PREFERRED_USER_ARCH: {
+ host_preferred_user_arch_t user_arch_info;
+
+ /*
+ * Basic information about this host.
+ */
+ if (*count < HOST_PREFERRED_USER_ARCH_COUNT) {
+ return KERN_FAILURE;
+ }
+
+ user_arch_info = (host_preferred_user_arch_t)info;
+
+#if defined(PREFERRED_USER_CPU_TYPE) && defined(PREFERRED_USER_CPU_SUBTYPE)
+ cpu_type_t preferred_cpu_type;
+ cpu_subtype_t preferred_cpu_subtype;
+ if (!PE_get_default("kern.preferred_cpu_type", &preferred_cpu_type, sizeof(cpu_type_t))) {
+ preferred_cpu_type = PREFERRED_USER_CPU_TYPE;
+ }
+ if (!PE_get_default("kern.preferred_cpu_subtype", &preferred_cpu_subtype, sizeof(cpu_subtype_t))) {
+ preferred_cpu_subtype = PREFERRED_USER_CPU_SUBTYPE;
+ }
+ user_arch_info->cpu_type = preferred_cpu_type;
+ user_arch_info->cpu_subtype = preferred_cpu_subtype;
+#else
+ int master_id = master_processor->cpu_id;
+ user_arch_info->cpu_type = slot_type(master_id);
+ user_arch_info->cpu_subtype = slot_subtype(master_id);
#endif
+
+
+ *count = HOST_PREFERRED_USER_ARCH_COUNT;
+
+ return KERN_SUCCESS;
}
- default: return (KERN_INVALID_ARGUMENT);
+ default: return KERN_INVALID_ARGUMENT;
}
}
+kern_return_t host_statistics(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count);
+
kern_return_t
host_statistics(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count)
{
- uint32_t i;
-
- if (host == HOST_NULL)
- return (KERN_INVALID_HOST);
+ if (host == HOST_NULL) {
+ return KERN_INVALID_HOST;
+ }
switch (flavor) {
case HOST_LOAD_INFO: {
host_load_info_t load_info;
- if (*count < HOST_LOAD_INFO_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_LOAD_INFO_COUNT) {
+ return KERN_FAILURE;
+ }
load_info = (host_load_info_t)info;
bcopy((char *)mach_factor, (char *)load_info->mach_factor, sizeof mach_factor);
*count = HOST_LOAD_INFO_COUNT;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
case HOST_VM_INFO: {
- processor_t processor;
- vm_statistics64_t stat;
vm_statistics64_data_t host_vm_stat;
vm_statistics_t stat32;
mach_msg_type_number_t original_count;
- if (*count < HOST_VM_INFO_REV0_COUNT)
- return (KERN_FAILURE);
-
- processor = processor_list;
- stat = &PROCESSOR_DATA(processor, vm_stat);
- host_vm_stat = *stat;
-
- if (processor_count > 1) {
- simple_lock(&processor_list_lock);
-
- while ((processor = processor->processor_list) != NULL) {
- stat = &PROCESSOR_DATA(processor, vm_stat);
-
- host_vm_stat.zero_fill_count += stat->zero_fill_count;
- host_vm_stat.reactivations += stat->reactivations;
- host_vm_stat.pageins += stat->pageins;
- host_vm_stat.pageouts += stat->pageouts;
- host_vm_stat.faults += stat->faults;
- host_vm_stat.cow_faults += stat->cow_faults;
- host_vm_stat.lookups += stat->lookups;
- host_vm_stat.hits += stat->hits;
- }
+ if (*count < HOST_VM_INFO_REV0_COUNT) {
+ return KERN_FAILURE;
+ }
- simple_unlock(&processor_list_lock);
+ host_vm_stat = *PERCPU_GET_MASTER(vm_stat);
+
+ percpu_foreach_secondary(stat, vm_stat) {
+ vm_statistics64_data_t data = *stat;
+ host_vm_stat.zero_fill_count += data.zero_fill_count;
+ host_vm_stat.reactivations += data.reactivations;
+ host_vm_stat.pageins += data.pageins;
+ host_vm_stat.pageouts += data.pageouts;
+ host_vm_stat.faults += data.faults;
+ host_vm_stat.cow_faults += data.cow_faults;
+ host_vm_stat.lookups += data.lookups;
+ host_vm_stat.hits += data.hits;
}
stat32 = (vm_statistics_t)info;
stat32->active_count = VM_STATISTICS_TRUNCATE_TO_32_BIT(vm_page_active_count);
if (vm_page_local_q) {
- for (i = 0; i < vm_page_local_q_count; i++) {
- struct vpl * lq;
-
- lq = &vm_page_local_q[i].vpl_un.vpl;
-
+ zpercpu_foreach(lq, vm_page_local_q) {
stat32->active_count += VM_STATISTICS_TRUNCATE_TO_32_BIT(lq->vpl_count);
}
}
stat32->inactive_count = VM_STATISTICS_TRUNCATE_TO_32_BIT(vm_page_inactive_count);
+#if CONFIG_EMBEDDED
+ stat32->wire_count = VM_STATISTICS_TRUNCATE_TO_32_BIT(vm_page_wire_count);
+#else
stat32->wire_count = VM_STATISTICS_TRUNCATE_TO_32_BIT(vm_page_wire_count + vm_page_throttled_count + vm_lopage_free_count);
+#endif
stat32->zero_fill_count = VM_STATISTICS_TRUNCATE_TO_32_BIT(host_vm_stat.zero_fill_count);
stat32->reactivations = VM_STATISTICS_TRUNCATE_TO_32_BIT(host_vm_stat.reactivations);
stat32->pageins = VM_STATISTICS_TRUNCATE_TO_32_BIT(host_vm_stat.pageins);
/* rev3 changed some of the fields to be 64-bit*/
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
case HOST_CPU_LOAD_INFO: {
- processor_t processor;
host_cpu_load_info_t cpu_load_info;
- if (*count < HOST_CPU_LOAD_INFO_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_CPU_LOAD_INFO_COUNT) {
+ return KERN_FAILURE;
+ }
#define GET_TICKS_VALUE(state, ticks) \
MACRO_BEGIN cpu_load_info->cpu_ticks[(state)] += (uint32_t)(ticks / hz_tick_interval); \
MACRO_END
#define GET_TICKS_VALUE_FROM_TIMER(processor, state, timer) \
- MACRO_BEGIN GET_TICKS_VALUE(state, timer_grab(&PROCESSOR_DATA(processor, timer))); \
+ MACRO_BEGIN GET_TICKS_VALUE(state, timer_grab(&(processor)->timer)); \
MACRO_END
cpu_load_info = (host_cpu_load_info_t)info;
cpu_load_info->cpu_ticks[CPU_STATE_IDLE] = 0;
cpu_load_info->cpu_ticks[CPU_STATE_NICE] = 0;
- simple_lock(&processor_list_lock);
+ simple_lock(&processor_list_lock, LCK_GRP_NULL);
+
+ unsigned int pcount = processor_count;
+
+ for (unsigned int i = 0; i < pcount; i++) {
+ processor_t processor = processor_array[i];
+ assert(processor != PROCESSOR_NULL);
- for (processor = processor_list; processor != NULL; processor = processor->processor_list) {
timer_t idle_state;
uint64_t idle_time_snapshot1, idle_time_snapshot2;
uint64_t idle_time_tstamp1, idle_time_tstamp2;
GET_TICKS_VALUE_FROM_TIMER(processor, CPU_STATE_USER, system_state);
}
- idle_state = &PROCESSOR_DATA(processor, idle_state);
+ idle_state = &processor->idle_state;
idle_time_snapshot1 = timer_grab(idle_state);
idle_time_tstamp1 = idle_state->tstamp;
- if (PROCESSOR_DATA(processor, current_state) != idle_state) {
+ if (processor->current_state != idle_state) {
/* Processor is non-idle, so idle timer should be accurate */
GET_TICKS_VALUE_FROM_TIMER(processor, CPU_STATE_IDLE, idle_state);
} else if ((idle_time_snapshot1 != (idle_time_snapshot2 = timer_grab(idle_state))) ||
- (idle_time_tstamp1 != (idle_time_tstamp2 = idle_state->tstamp))) {
+ (idle_time_tstamp1 != (idle_time_tstamp2 = idle_state->tstamp))) {
/* Idle timer is being updated concurrently, second stamp is good enough */
GET_TICKS_VALUE(CPU_STATE_IDLE, idle_time_snapshot2);
} else {
*count = HOST_CPU_LOAD_INFO_COUNT;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
case HOST_EXPIRED_TASK_INFO: {
if (*count < TASK_POWER_INFO_COUNT) {
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
- task_power_info_t tinfo = (task_power_info_t)info;
+ task_power_info_t tinfo1 = (task_power_info_t)info;
+ task_power_info_v2_t tinfo2 = (task_power_info_v2_t)info;
- tinfo->task_interrupt_wakeups = dead_task_statistics.task_interrupt_wakeups;
- tinfo->task_platform_idle_wakeups = dead_task_statistics.task_platform_idle_wakeups;
+ tinfo1->task_interrupt_wakeups = dead_task_statistics.task_interrupt_wakeups;
+ tinfo1->task_platform_idle_wakeups = dead_task_statistics.task_platform_idle_wakeups;
- tinfo->task_timer_wakeups_bin_1 = dead_task_statistics.task_timer_wakeups_bin_1;
+ tinfo1->task_timer_wakeups_bin_1 = dead_task_statistics.task_timer_wakeups_bin_1;
- tinfo->task_timer_wakeups_bin_2 = dead_task_statistics.task_timer_wakeups_bin_2;
+ tinfo1->task_timer_wakeups_bin_2 = dead_task_statistics.task_timer_wakeups_bin_2;
- tinfo->total_user = dead_task_statistics.total_user_time;
- tinfo->total_system = dead_task_statistics.total_system_time;
+ tinfo1->total_user = dead_task_statistics.total_user_time;
+ tinfo1->total_system = dead_task_statistics.total_system_time;
+ if (*count < TASK_POWER_INFO_V2_COUNT) {
+ *count = TASK_POWER_INFO_COUNT;
+ } else if (*count >= TASK_POWER_INFO_V2_COUNT) {
+ tinfo2->gpu_energy.task_gpu_utilisation = dead_task_statistics.task_gpu_ns;
+#if defined(__arm__) || defined(__arm64__)
+ tinfo2->task_energy = dead_task_statistics.task_energy;
+ tinfo2->task_ptime = dead_task_statistics.total_ptime;
+ tinfo2->task_pset_switches = dead_task_statistics.total_pset_switches;
+#endif
+ *count = TASK_POWER_INFO_V2_COUNT;
+ }
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
- default: return (KERN_INVALID_ARGUMENT);
+ default: return KERN_INVALID_ARGUMENT;
}
}
extern uint32_t c_segment_pages_compressed;
-kern_return_t
-host_statistics64(host_t host, host_flavor_t flavor, host_info64_t info, mach_msg_type_number_t * count)
+#define HOST_STATISTICS_TIME_WINDOW 1 /* seconds */
+#define HOST_STATISTICS_MAX_REQUESTS 10 /* maximum number of requests per window */
+#define HOST_STATISTICS_MIN_REQUESTS 2 /* minimum number of requests per window */
+
+uint64_t host_statistics_time_window;
+
+static LCK_GRP_DECLARE(host_statistics_lck_grp, "host_statistics");
+static LCK_MTX_DECLARE(host_statistics_lck, &host_statistics_lck_grp);
+
+#define HOST_VM_INFO64_REV0 0
+#define HOST_VM_INFO64_REV1 1
+#define HOST_EXTMOD_INFO64_REV0 2
+#define HOST_LOAD_INFO_REV0 3
+#define HOST_VM_INFO_REV0 4
+#define HOST_VM_INFO_REV1 5
+#define HOST_VM_INFO_REV2 6
+#define HOST_CPU_LOAD_INFO_REV0 7
+#define HOST_EXPIRED_TASK_INFO_REV0 8
+#define HOST_EXPIRED_TASK_INFO_REV1 9
+#define NUM_HOST_INFO_DATA_TYPES 10
+
+static vm_statistics64_data_t host_vm_info64_rev0 = {};
+static vm_statistics64_data_t host_vm_info64_rev1 = {};
+static vm_extmod_statistics_data_t host_extmod_info64 = {};
+static host_load_info_data_t host_load_info = {};
+static vm_statistics_data_t host_vm_info_rev0 = {};
+static vm_statistics_data_t host_vm_info_rev1 = {};
+static vm_statistics_data_t host_vm_info_rev2 = {};
+static host_cpu_load_info_data_t host_cpu_load_info = {};
+static task_power_info_data_t host_expired_task_info = {};
+static task_power_info_v2_data_t host_expired_task_info2 = {};
+
+struct host_stats_cache {
+ uint64_t last_access;
+ uint64_t current_requests;
+ uint64_t max_requests;
+ uintptr_t data;
+ mach_msg_type_number_t count; //NOTE count is in sizeof(integer_t)
+};
+
+static struct host_stats_cache g_host_stats_cache[NUM_HOST_INFO_DATA_TYPES] = {
+ [HOST_VM_INFO64_REV0] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_vm_info64_rev0, .count = HOST_VM_INFO64_REV0_COUNT },
+ [HOST_VM_INFO64_REV1] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_vm_info64_rev1, .count = HOST_VM_INFO64_REV1_COUNT },
+ [HOST_EXTMOD_INFO64_REV0] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_extmod_info64, .count = HOST_EXTMOD_INFO64_COUNT },
+ [HOST_LOAD_INFO_REV0] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_load_info, .count = HOST_LOAD_INFO_COUNT },
+ [HOST_VM_INFO_REV0] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_vm_info_rev0, .count = HOST_VM_INFO_REV0_COUNT },
+ [HOST_VM_INFO_REV1] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_vm_info_rev1, .count = HOST_VM_INFO_REV1_COUNT },
+ [HOST_VM_INFO_REV2] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_vm_info_rev2, .count = HOST_VM_INFO_REV2_COUNT },
+ [HOST_CPU_LOAD_INFO_REV0] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_cpu_load_info, .count = HOST_CPU_LOAD_INFO_COUNT },
+ [HOST_EXPIRED_TASK_INFO_REV0] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_expired_task_info, .count = TASK_POWER_INFO_COUNT },
+ [HOST_EXPIRED_TASK_INFO_REV1] = { .last_access = 0, .current_requests = 0, .max_requests = 0, .data = (uintptr_t)&host_expired_task_info2, .count = TASK_POWER_INFO_V2_COUNT},
+};
+
+
+void
+host_statistics_init(void)
+{
+ nanoseconds_to_absolutetime((HOST_STATISTICS_TIME_WINDOW * NSEC_PER_SEC), &host_statistics_time_window);
+}
+
+static void
+cache_host_statistics(int index, host_info64_t info)
{
- uint32_t i;
+ if (index < 0 || index >= NUM_HOST_INFO_DATA_TYPES) {
+ return;
+ }
- if (host == HOST_NULL)
- return (KERN_INVALID_HOST);
+ task_t task = current_task();
+ if (task->t_flags & TF_PLATFORM) {
+ return;
+ }
- switch (flavor) {
- case HOST_VM_INFO64: /* We were asked to get vm_statistics64 */
- {
- processor_t processor;
- vm_statistics64_t stat;
- vm_statistics64_data_t host_vm_stat;
- mach_msg_type_number_t original_count;
- unsigned int local_q_internal_count;
- unsigned int local_q_external_count;
-
- if (*count < HOST_VM_INFO64_REV0_COUNT)
- return (KERN_FAILURE);
-
- processor = processor_list;
- stat = &PROCESSOR_DATA(processor, vm_stat);
- host_vm_stat = *stat;
-
- if (processor_count > 1) {
- simple_lock(&processor_list_lock);
-
- while ((processor = processor->processor_list) != NULL) {
- stat = &PROCESSOR_DATA(processor, vm_stat);
-
- host_vm_stat.zero_fill_count += stat->zero_fill_count;
- host_vm_stat.reactivations += stat->reactivations;
- host_vm_stat.pageins += stat->pageins;
- host_vm_stat.pageouts += stat->pageouts;
- host_vm_stat.faults += stat->faults;
- host_vm_stat.cow_faults += stat->cow_faults;
- host_vm_stat.lookups += stat->lookups;
- host_vm_stat.hits += stat->hits;
- host_vm_stat.compressions += stat->compressions;
- host_vm_stat.decompressions += stat->decompressions;
- host_vm_stat.swapins += stat->swapins;
- host_vm_stat.swapouts += stat->swapouts;
- }
+ memcpy((void *)g_host_stats_cache[index].data, info, g_host_stats_cache[index].count * sizeof(integer_t));
+ return;
+}
+
+static void
+get_cached_info(int index, host_info64_t info, mach_msg_type_number_t* count)
+{
+ if (index < 0 || index >= NUM_HOST_INFO_DATA_TYPES) {
+ *count = 0;
+ return;
+ }
+
+ *count = g_host_stats_cache[index].count;
+ memcpy(info, (void *)g_host_stats_cache[index].data, g_host_stats_cache[index].count * sizeof(integer_t));
+}
- simple_unlock(&processor_list_lock);
+static int
+get_host_info_data_index(bool is_stat64, host_flavor_t flavor, mach_msg_type_number_t* count, kern_return_t* ret)
+{
+ switch (flavor) {
+ case HOST_VM_INFO64:
+ if (!is_stat64) {
+ *ret = KERN_INVALID_ARGUMENT;
+ return -1;
+ }
+ if (*count < HOST_VM_INFO64_REV0_COUNT) {
+ *ret = KERN_FAILURE;
+ return -1;
+ }
+ if (*count >= HOST_VM_INFO64_REV1_COUNT) {
+ return HOST_VM_INFO64_REV1;
}
+ return HOST_VM_INFO64_REV0;
- stat = (vm_statistics64_t)info;
+ case HOST_EXTMOD_INFO64:
+ if (!is_stat64) {
+ *ret = KERN_INVALID_ARGUMENT;
+ return -1;
+ }
+ if (*count < HOST_EXTMOD_INFO64_COUNT) {
+ *ret = KERN_FAILURE;
+ return -1;
+ }
+ return HOST_EXTMOD_INFO64_REV0;
- stat->free_count = vm_page_free_count + vm_page_speculative_count;
- stat->active_count = vm_page_active_count;
+ case HOST_LOAD_INFO:
+ if (*count < HOST_LOAD_INFO_COUNT) {
+ *ret = KERN_FAILURE;
+ return -1;
+ }
+ return HOST_LOAD_INFO_REV0;
- local_q_internal_count = 0;
- local_q_external_count = 0;
- if (vm_page_local_q) {
- for (i = 0; i < vm_page_local_q_count; i++) {
- struct vpl * lq;
+ case HOST_VM_INFO:
+ if (*count < HOST_VM_INFO_REV0_COUNT) {
+ *ret = KERN_FAILURE;
+ return -1;
+ }
+ if (*count >= HOST_VM_INFO_REV2_COUNT) {
+ return HOST_VM_INFO_REV2;
+ }
+ if (*count >= HOST_VM_INFO_REV1_COUNT) {
+ return HOST_VM_INFO_REV1;
+ }
+ return HOST_VM_INFO_REV0;
- lq = &vm_page_local_q[i].vpl_un.vpl;
+ case HOST_CPU_LOAD_INFO:
+ if (*count < HOST_CPU_LOAD_INFO_COUNT) {
+ *ret = KERN_FAILURE;
+ return -1;
+ }
+ return HOST_CPU_LOAD_INFO_REV0;
- stat->active_count += lq->vpl_count;
- local_q_internal_count += lq->vpl_internal_count;
- local_q_external_count += lq->vpl_external_count;
- }
+ case HOST_EXPIRED_TASK_INFO:
+ if (*count < TASK_POWER_INFO_COUNT) {
+ *ret = KERN_FAILURE;
+ return -1;
}
- stat->inactive_count = vm_page_inactive_count;
- stat->wire_count = vm_page_wire_count + vm_page_throttled_count + vm_lopage_free_count;
- stat->zero_fill_count = host_vm_stat.zero_fill_count;
- stat->reactivations = host_vm_stat.reactivations;
- stat->pageins = host_vm_stat.pageins;
- stat->pageouts = host_vm_stat.pageouts;
- stat->faults = host_vm_stat.faults;
- stat->cow_faults = host_vm_stat.cow_faults;
- stat->lookups = host_vm_stat.lookups;
- stat->hits = host_vm_stat.hits;
+ if (*count >= TASK_POWER_INFO_V2_COUNT) {
+ return HOST_EXPIRED_TASK_INFO_REV1;
+ }
+ return HOST_EXPIRED_TASK_INFO_REV0;
+
+ default:
+ *ret = KERN_INVALID_ARGUMENT;
+ return -1;
+ }
+}
- stat->purgeable_count = vm_page_purgeable_count;
- stat->purges = vm_page_purged_count;
+static bool
+rate_limit_host_statistics(bool is_stat64, host_flavor_t flavor, host_info64_t info, mach_msg_type_number_t* count, kern_return_t* ret, int *pindex)
+{
+ task_t task = current_task();
+
+ assert(task != kernel_task);
+
+ *ret = KERN_SUCCESS;
+
+ /* Access control only for third party applications */
+ if (task->t_flags & TF_PLATFORM) {
+ return FALSE;
+ }
- stat->speculative_count = vm_page_speculative_count;
+ /* Rate limit to HOST_STATISTICS_MAX_REQUESTS queries for each HOST_STATISTICS_TIME_WINDOW window of time */
+ bool rate_limited = FALSE;
+ bool set_last_access = TRUE;
+ /* there is a cache for every flavor */
+ int index = get_host_info_data_index(is_stat64, flavor, count, ret);
+ if (index == -1) {
+ goto out;
+ }
+
+ *pindex = index;
+ lck_mtx_lock(&host_statistics_lck);
+ if (g_host_stats_cache[index].last_access > mach_continuous_time() - host_statistics_time_window) {
+ set_last_access = FALSE;
+ if (g_host_stats_cache[index].current_requests++ >= g_host_stats_cache[index].max_requests) {
+ rate_limited = TRUE;
+ get_cached_info(index, info, count);
+ }
+ }
+ if (set_last_access) {
+ g_host_stats_cache[index].current_requests = 1;
/*
- * Fill in extra info added in later revisions of the
- * vm_statistics data structure. Fill in only what can fit
- * in the data structure the caller gave us !
+ * select a random number of requests (included between HOST_STATISTICS_MIN_REQUESTS and HOST_STATISTICS_MAX_REQUESTS)
+ * to let query host_statistics.
+ * In this way it is not possible to infer looking at when the a cached copy changes if host_statistics was called on
+ * the provious window.
*/
- original_count = *count;
- *count = HOST_VM_INFO64_REV0_COUNT; /* rev0 already filled in */
- if (original_count >= HOST_VM_INFO64_REV1_COUNT) {
- /* rev1 added "throttled count" */
- stat->throttled_count = vm_page_throttled_count;
- /* rev1 added "compression" info */
- stat->compressor_page_count = VM_PAGE_COMPRESSOR_COUNT;
- stat->compressions = host_vm_stat.compressions;
- stat->decompressions = host_vm_stat.decompressions;
- stat->swapins = host_vm_stat.swapins;
- stat->swapouts = host_vm_stat.swapouts;
- /* rev1 added:
- * "external page count"
- * "anonymous page count"
- * "total # of pages (uncompressed) held in the compressor"
- */
- stat->external_page_count = (vm_page_pageable_external_count + local_q_external_count);
- stat->internal_page_count = (vm_page_pageable_internal_count + local_q_internal_count);
- stat->total_uncompressed_pages_in_compressor = c_segment_pages_compressed;
- *count = HOST_VM_INFO64_REV1_COUNT;
- }
-
- return (KERN_SUCCESS);
+ g_host_stats_cache[index].max_requests = (mach_absolute_time() % (HOST_STATISTICS_MAX_REQUESTS - HOST_STATISTICS_MIN_REQUESTS + 1)) + HOST_STATISTICS_MIN_REQUESTS;
+ g_host_stats_cache[index].last_access = mach_continuous_time();
}
+ lck_mtx_unlock(&host_statistics_lck);
+out:
+ return rate_limited;
+}
+
+kern_return_t
+vm_stats(void *info, unsigned int *count)
+{
+ vm_statistics64_data_t host_vm_stat;
+ mach_msg_type_number_t original_count;
+ unsigned int local_q_internal_count;
+ unsigned int local_q_external_count;
+
+ if (*count < HOST_VM_INFO64_REV0_COUNT) {
+ return KERN_FAILURE;
+ }
+
+ host_vm_stat = *PERCPU_GET_MASTER(vm_stat);
+
+ percpu_foreach_secondary(stat, vm_stat) {
+ vm_statistics64_data_t data = *stat;
+ host_vm_stat.zero_fill_count += data.zero_fill_count;
+ host_vm_stat.reactivations += data.reactivations;
+ host_vm_stat.pageins += data.pageins;
+ host_vm_stat.pageouts += data.pageouts;
+ host_vm_stat.faults += data.faults;
+ host_vm_stat.cow_faults += data.cow_faults;
+ host_vm_stat.lookups += data.lookups;
+ host_vm_stat.hits += data.hits;
+ host_vm_stat.compressions += data.compressions;
+ host_vm_stat.decompressions += data.decompressions;
+ host_vm_stat.swapins += data.swapins;
+ host_vm_stat.swapouts += data.swapouts;
+ }
+
+ vm_statistics64_t stat = (vm_statistics64_t)info;
+
+ stat->free_count = vm_page_free_count + vm_page_speculative_count;
+ stat->active_count = vm_page_active_count;
+
+ local_q_internal_count = 0;
+ local_q_external_count = 0;
+ if (vm_page_local_q) {
+ zpercpu_foreach(lq, vm_page_local_q) {
+ stat->active_count += lq->vpl_count;
+ local_q_internal_count += lq->vpl_internal_count;
+ local_q_external_count += lq->vpl_external_count;
+ }
+ }
+ stat->inactive_count = vm_page_inactive_count;
+#if CONFIG_EMBEDDED
+ stat->wire_count = vm_page_wire_count;
+#else
+ stat->wire_count = vm_page_wire_count + vm_page_throttled_count + vm_lopage_free_count;
+#endif
+ stat->zero_fill_count = host_vm_stat.zero_fill_count;
+ stat->reactivations = host_vm_stat.reactivations;
+ stat->pageins = host_vm_stat.pageins;
+ stat->pageouts = host_vm_stat.pageouts;
+ stat->faults = host_vm_stat.faults;
+ stat->cow_faults = host_vm_stat.cow_faults;
+ stat->lookups = host_vm_stat.lookups;
+ stat->hits = host_vm_stat.hits;
+
+ stat->purgeable_count = vm_page_purgeable_count;
+ stat->purges = vm_page_purged_count;
+
+ stat->speculative_count = vm_page_speculative_count;
+
+ /*
+ * Fill in extra info added in later revisions of the
+ * vm_statistics data structure. Fill in only what can fit
+ * in the data structure the caller gave us !
+ */
+ original_count = *count;
+ *count = HOST_VM_INFO64_REV0_COUNT; /* rev0 already filled in */
+ if (original_count >= HOST_VM_INFO64_REV1_COUNT) {
+ /* rev1 added "throttled count" */
+ stat->throttled_count = vm_page_throttled_count;
+ /* rev1 added "compression" info */
+ stat->compressor_page_count = VM_PAGE_COMPRESSOR_COUNT;
+ stat->compressions = host_vm_stat.compressions;
+ stat->decompressions = host_vm_stat.decompressions;
+ stat->swapins = host_vm_stat.swapins;
+ stat->swapouts = host_vm_stat.swapouts;
+ /* rev1 added:
+ * "external page count"
+ * "anonymous page count"
+ * "total # of pages (uncompressed) held in the compressor"
+ */
+ stat->external_page_count = (vm_page_pageable_external_count + local_q_external_count);
+ stat->internal_page_count = (vm_page_pageable_internal_count + local_q_internal_count);
+ stat->total_uncompressed_pages_in_compressor = c_segment_pages_compressed;
+ *count = HOST_VM_INFO64_REV1_COUNT;
+ }
+
+ return KERN_SUCCESS;
+}
+
+kern_return_t host_statistics64(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count);
+
+kern_return_t
+host_statistics64(host_t host, host_flavor_t flavor, host_info64_t info, mach_msg_type_number_t * count)
+{
+ if (host == HOST_NULL) {
+ return KERN_INVALID_HOST;
+ }
+
+ switch (flavor) {
+ case HOST_VM_INFO64: /* We were asked to get vm_statistics64 */
+ return vm_stats(info, count);
case HOST_EXTMOD_INFO64: /* We were asked to get vm_statistics64 */
{
vm_extmod_statistics_t out_extmod_statistics;
- if (*count < HOST_EXTMOD_INFO64_COUNT)
- return (KERN_FAILURE);
+ if (*count < HOST_EXTMOD_INFO64_COUNT) {
+ return KERN_FAILURE;
+ }
out_extmod_statistics = (vm_extmod_statistics_t)info;
*out_extmod_statistics = host_extmod_statistics;
*count = HOST_EXTMOD_INFO64_COUNT;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
default: /* If we didn't recognize the flavor, send to host_statistics */
- return (host_statistics(host, flavor, (host_info_t)info, count));
+ return host_statistics(host, flavor, (host_info_t)info, count);
+ }
+}
+
+kern_return_t
+host_statistics64_from_user(host_t host, host_flavor_t flavor, host_info64_t info, mach_msg_type_number_t * count)
+{
+ kern_return_t ret = KERN_SUCCESS;
+ int index;
+
+ if (host == HOST_NULL) {
+ return KERN_INVALID_HOST;
+ }
+
+ if (rate_limit_host_statistics(TRUE, flavor, info, count, &ret, &index)) {
+ return ret;
+ }
+
+ if (ret != KERN_SUCCESS) {
+ return ret;
+ }
+
+ ret = host_statistics64(host, flavor, info, count);
+
+ if (ret == KERN_SUCCESS) {
+ cache_host_statistics(index, info);
+ }
+
+ return ret;
+}
+
+kern_return_t
+host_statistics_from_user(host_t host, host_flavor_t flavor, host_info64_t info, mach_msg_type_number_t * count)
+{
+ kern_return_t ret = KERN_SUCCESS;
+ int index;
+
+ if (host == HOST_NULL) {
+ return KERN_INVALID_HOST;
}
+
+ if (rate_limit_host_statistics(FALSE, flavor, info, count, &ret, &index)) {
+ return ret;
+ }
+
+ if (ret != KERN_SUCCESS) {
+ return ret;
+ }
+
+ ret = host_statistics(host, flavor, info, count);
+
+ if (ret == KERN_SUCCESS) {
+ cache_host_statistics(index, info);
+ }
+
+ return ret;
}
/*
kern_return_t
host_priv_statistics(host_priv_t host_priv, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count)
{
- return (host_statistics((host_t)host_priv, flavor, info, count));
+ return host_statistics((host_t)host_priv, flavor, info, count);
}
kern_return_t
set_sched_stats_active(boolean_t active)
{
sched_stats_active = active;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
+
+uint64_t
+get_pages_grabbed_count(void)
+{
+ uint64_t pages_grabbed_count = 0;
+
+ percpu_foreach(count, vm_page_grab_count) {
+ pages_grabbed_count += *count;
+ }
+
+ return pages_grabbed_count;
+}
+
+
kern_return_t
get_sched_statistics(struct _processor_statistics_np * out, uint32_t * count)
{
- processor_t processor;
+ uint32_t pos = 0;
if (!sched_stats_active) {
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
- simple_lock(&processor_list_lock);
+ percpu_foreach_base(pcpu_base) {
+ struct sched_statistics stats;
+ processor_t processor;
- if (*count < (processor_count + 1) * sizeof(struct _processor_statistics_np)) { /* One for RT */
- simple_unlock(&processor_list_lock);
- return (KERN_FAILURE);
- }
+ pos += sizeof(struct _processor_statistics_np);
+ if (pos > *count) {
+ return KERN_FAILURE;
+ }
- processor = processor_list;
- while (processor) {
- struct processor_sched_statistics * stats = &processor->processor_data.sched_stats;
+ stats = *PERCPU_GET_WITH_BASE(pcpu_base, sched_stats);
+ processor = PERCPU_GET_WITH_BASE(pcpu_base, processor);
out->ps_cpuid = processor->cpu_id;
- out->ps_csw_count = stats->csw_count;
- out->ps_preempt_count = stats->preempt_count;
- out->ps_preempted_rt_count = stats->preempted_rt_count;
- out->ps_preempted_by_rt_count = stats->preempted_by_rt_count;
- out->ps_rt_sched_count = stats->rt_sched_count;
- out->ps_interrupt_count = stats->interrupt_count;
- out->ps_ipi_count = stats->ipi_count;
- out->ps_timer_pop_count = stats->timer_pop_count;
+ out->ps_csw_count = stats.csw_count;
+ out->ps_preempt_count = stats.preempt_count;
+ out->ps_preempted_rt_count = stats.preempted_rt_count;
+ out->ps_preempted_by_rt_count = stats.preempted_by_rt_count;
+ out->ps_rt_sched_count = stats.rt_sched_count;
+ out->ps_interrupt_count = stats.interrupt_count;
+ out->ps_ipi_count = stats.ipi_count;
+ out->ps_timer_pop_count = stats.timer_pop_count;
out->ps_runq_count_sum = SCHED(processor_runq_stats_count_sum)(processor);
- out->ps_idle_transitions = stats->idle_transitions;
- out->ps_quantum_timer_expirations = stats->quantum_timer_expirations;
+ out->ps_idle_transitions = stats.idle_transitions;
+ out->ps_quantum_timer_expirations = stats.quantum_timer_expirations;
out++;
- processor = processor->processor_list;
}
- *count = (uint32_t)(processor_count * sizeof(struct _processor_statistics_np));
-
- simple_unlock(&processor_list_lock);
-
/* And include RT Queue information */
+ pos += sizeof(struct _processor_statistics_np);
+ if (pos > *count) {
+ return KERN_FAILURE;
+ }
+
bzero(out, sizeof(*out));
out->ps_cpuid = (-1);
- out->ps_runq_count_sum = rt_runq.runq_stats.count_sum;
+ out->ps_runq_count_sum = SCHED(rt_runq_count_sum)();
out++;
- *count += (uint32_t)sizeof(struct _processor_statistics_np);
- return (KERN_SUCCESS);
+ *count = pos;
+
+ return KERN_SUCCESS;
}
kern_return_t
host_page_size(host_t host, vm_size_t * out_page_size)
{
- if (host == HOST_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host == HOST_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
*out_page_size = PAGE_SIZE;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
kern_return_t
host_kernel_version(host_t host, kernel_version_t out_version)
{
- if (host == HOST_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host == HOST_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
(void)strncpy(out_version, version, sizeof(kernel_version_t));
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
{
void * addr;
- if (host_priv == HOST_PRIV_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host_priv == HOST_PRIV_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
/*
* Allocate memory. Can be pageable because it won't be
*/
addr = kalloc((vm_size_t)sizeof(mach_port_t));
- if (addr == 0)
- return (KERN_RESOURCE_SHORTAGE);
+ if (addr == 0) {
+ return KERN_RESOURCE_SHORTAGE;
+ }
/* do the conversion that Mig should handle */
*((ipc_port_t *)addr) = convert_pset_name_to_port(&pset0);
*pset_list = (processor_set_array_t)addr;
*count = 1;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
if (host_priv == HOST_PRIV_NULL || pset_name == PROCESSOR_SET_NULL) {
*pset = PROCESSOR_SET_NULL;
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
*pset = pset_name;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
*/
kern_return_t
host_processor_info(host_t host,
- processor_flavor_t flavor,
- natural_t * out_pcount,
- processor_info_array_t * out_array,
- mach_msg_type_number_t * out_array_count)
+ processor_flavor_t flavor,
+ natural_t * out_pcount,
+ processor_info_array_t * out_array,
+ mach_msg_type_number_t * out_array_count)
{
kern_return_t result;
- processor_t processor;
host_t thost;
processor_info_t info;
- unsigned int icount, tcount;
- unsigned int pcount, i;
+ unsigned int icount;
+ unsigned int pcount;
vm_offset_t addr;
vm_size_t size, needed;
vm_map_copy_t copy;
- if (host == HOST_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host == HOST_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
result = processor_info_count(flavor, &icount);
- if (result != KERN_SUCCESS)
- return (result);
+ if (result != KERN_SUCCESS) {
+ return result;
+ }
pcount = processor_count;
assert(pcount != 0);
needed = pcount * icount * sizeof(natural_t);
size = vm_map_round_page(needed, VM_MAP_PAGE_MASK(ipc_kernel_map));
result = kmem_alloc(ipc_kernel_map, &addr, size, VM_KERN_MEMORY_IPC);
- if (result != KERN_SUCCESS)
- return (KERN_RESOURCE_SHORTAGE);
+ if (result != KERN_SUCCESS) {
+ return KERN_RESOURCE_SHORTAGE;
+ }
info = (processor_info_t)addr;
- processor = processor_list;
- tcount = icount;
- result = processor_info(processor, flavor, &thost, info, &tcount);
- if (result != KERN_SUCCESS) {
- kmem_free(ipc_kernel_map, addr, size);
- return (result);
- }
-
- if (pcount > 1) {
- for (i = 1; i < pcount; i++) {
- simple_lock(&processor_list_lock);
- processor = processor->processor_list;
- simple_unlock(&processor_list_lock);
-
- info += icount;
- tcount = icount;
- result = processor_info(processor, flavor, &thost, info, &tcount);
- if (result != KERN_SUCCESS) {
- kmem_free(ipc_kernel_map, addr, size);
- return (result);
- }
+ for (unsigned int i = 0; i < pcount; i++) {
+ processor_t processor = processor_array[i];
+ assert(processor != PROCESSOR_NULL);
+
+ unsigned int tcount = icount;
+
+ result = processor_info(processor, flavor, &thost, info, &tcount);
+ if (result != KERN_SUCCESS) {
+ kmem_free(ipc_kernel_map, addr, size);
+ return result;
}
+ info += icount;
}
- if (size != needed)
+ if (size != needed) {
bzero((char *)addr + needed, size - needed);
+ }
result = vm_map_unwire(ipc_kernel_map, vm_map_trunc_page(addr, VM_MAP_PAGE_MASK(ipc_kernel_map)),
- vm_map_round_page(addr + size, VM_MAP_PAGE_MASK(ipc_kernel_map)), FALSE);
+ vm_map_round_page(addr + size, VM_MAP_PAGE_MASK(ipc_kernel_map)), FALSE);
assert(result == KERN_SUCCESS);
result = vm_map_copyin(ipc_kernel_map, (vm_map_address_t)addr, (vm_map_size_t)needed, TRUE, ©);
assert(result == KERN_SUCCESS);
*out_array = (processor_info_array_t)copy;
*out_array_count = pcount * icount;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
+static bool
+is_valid_host_special_port(int id)
+{
+ return (id <= HOST_MAX_SPECIAL_PORT) &&
+ (id >= HOST_MIN_SPECIAL_PORT) &&
+ ((id <= HOST_LAST_SPECIAL_KERNEL_PORT) || (id > HOST_MAX_SPECIAL_KERNEL_PORT));
+}
+
+extern void * XNU_PTRAUTH_SIGNED_PTR("initproc") initproc;
+
/*
* Kernel interface for setting a special port.
*/
{
ipc_port_t old_port;
+ if (!is_valid_host_special_port(id)) {
+ panic("attempted to set invalid special port %d", id);
+ }
+
#if !MACH_FLIPC
- if (id == HOST_NODE_PORT)
- return (KERN_NOT_SUPPORTED);
+ if (id == HOST_NODE_PORT) {
+ return KERN_NOT_SUPPORTED;
+ }
#endif
host_lock(host_priv);
old_port = host_priv->special[id];
+ if ((id == HOST_AMFID_PORT) && (current_task()->bsd_info != initproc)) {
+ host_unlock(host_priv);
+ return KERN_NO_ACCESS;
+ }
host_priv->special[id] = port;
host_unlock(host_priv);
#if MACH_FLIPC
- if (id == HOST_NODE_PORT)
+ if (id == HOST_NODE_PORT) {
mach_node_port_changed();
+ }
#endif
- if (IP_VALID(old_port))
+ if (IP_VALID(old_port)) {
ipc_port_release_send(old_port);
- return (KERN_SUCCESS);
+ }
+ return KERN_SUCCESS;
}
/*
kern_return_t
kernel_get_special_port(host_priv_t host_priv, int id, ipc_port_t * portp)
{
- host_lock(host_priv);
- *portp = host_priv->special[id];
- host_unlock(host_priv);
- return (KERN_SUCCESS);
+ if (!is_valid_host_special_port(id)) {
+ panic("attempted to get invalid special port %d", id);
+ }
+
+ host_lock(host_priv);
+ *portp = host_priv->special[id];
+ host_unlock(host_priv);
+ return KERN_SUCCESS;
}
/*
* A special kernel port cannot be set up using this
* routine; use kernel_set_special_port() instead.
*/
+kern_return_t
+host_set_special_port_from_user(host_priv_t host_priv, int id, ipc_port_t port)
+{
+ if (host_priv == HOST_PRIV_NULL || id <= HOST_MAX_SPECIAL_KERNEL_PORT || id > HOST_MAX_SPECIAL_PORT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ if (task_is_driver(current_task())) {
+ return KERN_NO_ACCESS;
+ }
+
+ return host_set_special_port(host_priv, id, port);
+}
+
kern_return_t
host_set_special_port(host_priv_t host_priv, int id, ipc_port_t port)
{
- if (host_priv == HOST_PRIV_NULL || id <= HOST_MAX_SPECIAL_KERNEL_PORT || id > HOST_MAX_SPECIAL_PORT)
- return (KERN_INVALID_ARGUMENT);
+ if (host_priv == HOST_PRIV_NULL || id <= HOST_MAX_SPECIAL_KERNEL_PORT || id > HOST_MAX_SPECIAL_PORT) {
+ return KERN_INVALID_ARGUMENT;
+ }
#if CONFIG_MACF
- if (mac_task_check_set_host_special_port(current_task(), id, port) != 0)
- return (KERN_NO_ACCESS);
+ if (mac_task_check_set_host_special_port(current_task(), id, port) != 0) {
+ return KERN_NO_ACCESS;
+ }
#endif
- return (kernel_set_special_port(host_priv, id, port));
+ return kernel_set_special_port(host_priv, id, port);
}
/*
* in a "port not valid" error.
*/
+kern_return_t
+host_get_special_port_from_user(host_priv_t host_priv, __unused int node, int id, ipc_port_t * portp)
+{
+ if (host_priv == HOST_PRIV_NULL || id == HOST_SECURITY_PORT || id > HOST_MAX_SPECIAL_PORT || id < HOST_MIN_SPECIAL_PORT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ task_t task = current_task();
+ if (task && task_is_driver(task) && id > HOST_MAX_SPECIAL_KERNEL_PORT) {
+ /* allow HID drivers to get the sysdiagnose port for keychord handling */
+ if (id == HOST_SYSDIAGNOSE_PORT &&
+ IOTaskHasEntitlement(task, kIODriverKitHIDFamilyEventServiceEntitlementKey)) {
+ goto get_special_port;
+ }
+ return KERN_NO_ACCESS;
+ }
+get_special_port:
+ return host_get_special_port(host_priv, node, id, portp);
+}
+
kern_return_t
host_get_special_port(host_priv_t host_priv, __unused int node, int id, ipc_port_t * portp)
{
ipc_port_t port;
- if (host_priv == HOST_PRIV_NULL || id == HOST_SECURITY_PORT || id > HOST_MAX_SPECIAL_PORT || id < 0)
- return (KERN_INVALID_ARGUMENT);
+ if (host_priv == HOST_PRIV_NULL || id == HOST_SECURITY_PORT || id > HOST_MAX_SPECIAL_PORT || id < HOST_MIN_SPECIAL_PORT) {
+ return KERN_INVALID_ARGUMENT;
+ }
host_lock(host_priv);
port = realhost.special[id];
*portp = ipc_port_copy_send(port);
host_unlock(host_priv);
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
kern_return_t
host_get_io_master(host_t host, io_master_t * io_masterp)
{
- if (host == HOST_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host == HOST_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- return (host_get_io_master_port(host_priv_self(), io_masterp));
+ return host_get_io_master_port(host_priv_self(), io_masterp);
}
host_t
host_self(void)
{
- return (&realhost);
+ return &realhost;
}
host_priv_t
host_priv_self(void)
{
- return (&realhost);
+ return &realhost;
}
host_security_t
host_security_self(void)
{
- return (&realhost);
+ return &realhost;
}
kern_return_t
-host_set_atm_diagnostic_flag(host_priv_t host_priv, uint32_t diagnostic_flag)
+host_set_atm_diagnostic_flag(host_t host, uint32_t diagnostic_flag)
{
- if (host_priv == HOST_PRIV_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (host == HOST_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- assert(host_priv == &realhost);
+ if (!IOTaskHasEntitlement(current_task(), "com.apple.private.set-atm-diagnostic-flag")) {
+ return KERN_NO_ACCESS;
+ }
#if CONFIG_ATM
- return (atm_set_diagnostic_config(diagnostic_flag));
+ return atm_set_diagnostic_config(diagnostic_flag);
#else
(void)diagnostic_flag;
- return (KERN_NOT_SUPPORTED);
+ return KERN_NOT_SUPPORTED;
#endif
}
kern_return_t
host_set_multiuser_config_flags(host_priv_t host_priv, uint32_t multiuser_config)
{
+#if !defined(XNU_TARGET_OS_OSX)
+ if (host_priv == HOST_PRIV_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ assert(host_priv == &realhost);
+
+ /*
+ * Always enforce that the multiuser bit is set
+ * if a value is written to the commpage word.
+ */
+ commpage_update_multiuser_config(multiuser_config | kIsMultiUserDevice);
+ return KERN_SUCCESS;
+#else
(void)host_priv;
(void)multiuser_config;
- return (KERN_NOT_SUPPORTED);
+ return KERN_NOT_SUPPORTED;
+#endif
}
projects / apple / xnu.git / blobdiff