/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2010-2018 Apple Computer, 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@
*/
/*
* @OSF_COPYRIGHT@
*/
-#ifdef MACH_KERNEL_PRIVATE
-
#ifndef _KERN_LEDGER_H_
#define _KERN_LEDGER_H_
-#include <mach/mach_types.h>
+#include <mach/mach_types.h> /* ledger_t */
-#include <kern/kern_types.h>
-#include <kern/lock.h>
-#include <ipc/ipc_types.h>
+#ifdef MACH_KERNEL_PRIVATE
+#include <os/refcnt.h>
+#endif /* MACH_KERNEL_PRIVATE */
-struct ledger {
- ipc_port_t ledger_self;
- ipc_port_t ledger_service_port;
- ledger_item_t ledger_balance;
- ledger_item_t ledger_limit;
- struct ledger *ledger_ledger;
- struct ledger *ledger_parent;
- decl_simple_lock_data(,lock)
+#define LEDGER_INFO 0
+#define LEDGER_ENTRY_INFO 1
+#define LEDGER_TEMPLATE_INFO 2
+#define LEDGER_LIMIT 3
+/* LEDGER_MAX_CMD always tracks the index of the last ledger command. */
+#define LEDGER_MAX_CMD LEDGER_LIMIT
+
+#define LEDGER_NAME_MAX 32
+
+struct ledger_info {
+ char li_name[LEDGER_NAME_MAX];
+ int64_t li_id;
+ int64_t li_entries;
};
-typedef struct ledger ledger_data_t;
+struct ledger_template_info {
+ char lti_name[LEDGER_NAME_MAX];
+ char lti_group[LEDGER_NAME_MAX];
+ char lti_units[LEDGER_NAME_MAX];
+};
-#define ledger_lock(ledger) simple_lock(&(ledger)->lock)
-#define ledger_unlock(ledger) simple_unlock(&(ledger)->lock)
-#define ledger_lock_init(ledger) \
- simple_lock_init(&(ledger)->lock, 0)
+#ifdef MACH_KERNEL_PRIVATE
+/*
+ * These definitions are only here to allow pmap.c to determine the expected
+ * size of a ledger at build time. Direct access to ledger fields or to
+ * ledger entries is prohibited.
+ */
-extern ledger_t root_wired_ledger;
-extern ledger_t root_paged_ledger;
+/*
+ * The explicit alignment is to ensure that atomic operations don't panic
+ * on ARM.
+ */
+struct ledger_entry {
+ volatile uint32_t le_flags;
+#define LEDGER_PERCENT_NONE UINT16_MAX
+ uint16_t le_warn_percent;
+ ledger_amount_t le_limit;
+ volatile ledger_amount_t le_credit __attribute__((aligned(8)));
+ volatile ledger_amount_t le_debit __attribute__((aligned(8)));
+ union {
+ struct {
+ /*
+ * XXX - the following two fields can go away if we move all of
+ * the refill logic into process policy
+ */
+ uint64_t le_refill_period;
+ uint64_t le_last_refill;
+ } le_refill;
+ struct {
+ ledger_amount_t le_lifetime_max; /* Process lifetime peak */
+#if CONFIG_LEDGER_INTERVAL_MAX
+ ledger_amount_t le_interval_max; /* Interval peak XXX better name needed */
+#endif
+ } _le_max;
+ } _le;
+} __attribute__((aligned(8)));
-#define root_wired_ledger_port root_wired_ledger->ledger_self
-#define root_paged_ledger_port root_paged_ledger->ledger_self
+struct ledger {
+ uint64_t l_id;
+ os_refcnt_t l_refs;
+ int32_t l_size;
+ struct ledger_template *l_template;
+ struct ledger_entry l_entries[0] __attribute__((aligned(8)));
+};
+#endif /* MACH_KERNEL_PRIVATE */
-extern void ledger_init(void) __attribute__((section("__TEXT, initcode")));
+struct ledger_entry_info {
+ int64_t lei_balance;
+ int64_t lei_credit;
+ int64_t lei_debit;
+ uint64_t lei_limit;
+ uint64_t lei_refill_period; /* In nanoseconds */
+ uint64_t lei_last_refill; /* Time since last refill */
+};
-extern ipc_port_t ledger_copy(ledger_t);
+struct ledger_limit_args {
+ char lla_name[LEDGER_NAME_MAX];
+ uint64_t lla_limit;
+ uint64_t lla_refill_period;
+};
-extern kern_return_t ledger_enter(ledger_t, ledger_item_t);
+#ifdef KERNEL_PRIVATE
-extern ledger_t convert_port_to_ledger(ipc_port_t);
+typedef struct ledger_template *ledger_template_t;
-extern ipc_port_t convert_ledger_to_port(ledger_t);
+#define LEDGER_VALID(ledger) (ledger != LEDGER_NULL)
-#endif /* _KERN_LEDGER_H_ */
+/* Action to take when a ledger goes into deficit */
+#define LEDGER_ACTION_IGNORE 0x0000
+#define LEDGER_ACTION_BLOCK 0x0010
+#define LEDGER_ACTION_CALLBACK 0x0020
+#define LEDGER_ACTION_MASK 0x00f0
-#endif /* MACH_KERNEL_PRIVATE */
+/*
+ * Types of warnings that trigger a callback.
+ */
+#define LEDGER_WARNING_ROSE_ABOVE 1
+#define LEDGER_WARNING_DIPPED_BELOW 2
+
+typedef void (*ledger_callback_t)(int warning, const void * param0, const void *param1);
+
+extern void ledger_init(void);
+
+extern ledger_template_t ledger_template_create(const char *name);
+extern ledger_template_t ledger_template_copy(ledger_template_t template, const char *name);
+extern void ledger_template_dereference(ledger_template_t template);
+extern int ledger_entry_add(ledger_template_t template, const char *key,
+ const char *group, const char *units);
+extern kern_return_t ledger_set_callback(ledger_template_t template, int entry,
+ ledger_callback_t callback, const void *param0, const void *param1);
+extern kern_return_t ledger_track_maximum(ledger_template_t template, int entry,
+ int period_in_secs);
+extern kern_return_t ledger_panic_on_negative(ledger_template_t template,
+ int entry);
+extern kern_return_t ledger_track_credit_only(ledger_template_t template,
+ int entry);
+extern int ledger_key_lookup(ledger_template_t template, const char *key);
+
+/* value of entry type */
+#define LEDGER_CREATE_ACTIVE_ENTRIES 0
+#define LEDGER_CREATE_INACTIVE_ENTRIES 1
+extern ledger_t ledger_instantiate(ledger_template_t template, int entry_type);
+extern void ledger_template_complete(ledger_template_t template);
+extern void ledger_template_complete_secure_alloc(ledger_template_t template);
+extern kern_return_t ledger_disable_callback(ledger_t ledger, int entry);
+extern kern_return_t ledger_enable_callback(ledger_t ledger, int entry);
+extern kern_return_t ledger_get_limit(ledger_t ledger, int entry,
+ ledger_amount_t *limit);
+extern kern_return_t ledger_set_limit(ledger_t ledger, int entry,
+ ledger_amount_t limit, uint8_t warn_level_percentage);
+#if CONFIG_LEDGER_INTERVAL_MAX
+extern kern_return_t ledger_get_interval_max(ledger_t ledger, int entry,
+ ledger_amount_t *max_interval_balance, int reset);
+#endif /* CONFIG_LEDGER_INTERVAL_MAX */
+extern kern_return_t ledger_get_lifetime_max(ledger_t ledger, int entry,
+ ledger_amount_t *max_lifetime_balance);
+extern kern_return_t ledger_get_actions(ledger_t ledger, int entry, int *actions);
+extern kern_return_t ledger_set_action(ledger_t ledger, int entry, int action);
+extern kern_return_t ledger_get_period(ledger_t ledger, int entry,
+ uint64_t *period);
+extern kern_return_t ledger_set_period(ledger_t ledger, int entry,
+ uint64_t period);
+extern kern_return_t ledger_disable_refill(ledger_t l, int entry);
+extern kern_return_t ledger_entry_setactive(ledger_t ledger, int entry);
+extern void ledger_check_new_balance(thread_t thread, ledger_t ledger, int entry);
+extern kern_return_t ledger_credit(ledger_t ledger, int entry,
+ ledger_amount_t amount);
+extern kern_return_t ledger_credit_nocheck(ledger_t ledger, int entry,
+ ledger_amount_t amount);
+extern kern_return_t ledger_debit(ledger_t ledger, int entry,
+ ledger_amount_t amount);
+extern kern_return_t ledger_debit_nocheck(ledger_t ledger, int entry,
+ ledger_amount_t amount);
+extern kern_return_t ledger_credit_thread(thread_t thread, ledger_t ledger,
+ int entry, ledger_amount_t amount);
+extern kern_return_t ledger_debit_thread(thread_t thread, ledger_t ledger,
+ int entry, ledger_amount_t amount);
+extern kern_return_t ledger_zero_balance(ledger_t ledger, int entry);
+extern kern_return_t ledger_get_entries(ledger_t ledger, int entry,
+ ledger_amount_t *credit, ledger_amount_t *debit);
+extern kern_return_t ledger_get_balance(ledger_t ledger, int entry,
+ ledger_amount_t *balance);
+extern kern_return_t ledger_reset_callback_state(ledger_t ledger, int entry);
+extern kern_return_t ledger_disable_panic_on_negative(ledger_t ledger, int entry);
+extern kern_return_t ledger_get_panic_on_negative(ledger_t ledger, int entry, int *panic_on_negative);
+
+extern kern_return_t ledger_rollup(ledger_t to_ledger, ledger_t from_ledger);
+extern kern_return_t ledger_rollup_entry(ledger_t to_ledger, ledger_t from_ledger, int entry);
+
+extern void ledger_ast(thread_t thread);
+
+extern void ledger_reference(ledger_t ledger);
+extern void ledger_dereference(ledger_t ledger);
+
+/* Support for ledger() syscall */
+#ifdef LEDGER_DEBUG
+extern int ledger_limit(task_t task, struct ledger_limit_args *args);
+#endif
+extern int ledger_info(task_t task, struct ledger_info *info);
+
+extern int
+ledger_get_task_entry_info_multiple(task_t task, void **buf, int *len);
+
+extern void
+ledger_get_entry_info(ledger_t ledger, int entry,
+ struct ledger_entry_info *lei);
+
+extern int ledger_template_info(void **buf, int *len);
+
+#endif /* KERNEL_PRIVATE */
+
+#endif /* _KERN_LEDGER_H_ */
projects / apple / xnu.git / blobdiff