/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2016 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
+ * 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,
* 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_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
-/*
+/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
- *
+ *
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
- *
+ *
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
+ *
* Carnegie Mellon requests users of this software to return to
- *
+ *
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
- *
+ *
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
+/*
+ * 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.
+ */
/*
*/
/*
* Definitions for ports.
*/
-#ifndef _IPC_IPC_PORT_H_
+#ifndef _IPC_IPC_PORT_H_
#define _IPC_IPC_PORT_H_
-#include <norma_vm.h>
-#include <mach_rt.h>
+#ifdef MACH_KERNEL_PRIVATE
+
#include <mach_assert.h>
#include <mach_debug.h>
+#include <mach/mach_types.h>
#include <mach/boolean.h>
#include <mach/kern_return.h>
-#include <mach_debug.h>
#include <mach/port.h>
-#include <kern/lock.h>
-#include <kern/ipc_kobject.h>
-#include <kern/wait_queue.h>
+#include <kern/assert.h>
+#include <kern/kern_types.h>
+#include <kern/turnstile.h>
+
+#include <ipc/ipc_types.h>
#include <ipc/ipc_object.h>
#include <ipc/ipc_mqueue.h>
-#include <ipc/ipc_table.h>
-#include <ipc/ipc_types.h>
-#include <ipc/ipc_entry.h>
#include <ipc/ipc_space.h>
+#include <security/_label.h>
+
/*
* A receive right (port) can be in four states:
* 1) dead (not active, ip_timestamp has death time)
* taken when the port was destroyed.
*/
-typedef unsigned int ipc_port_timestamp_t;
+struct task_watchport_elem;
-typedef unsigned int ipc_port_flags_t;
+typedef unsigned int ipc_port_timestamp_t;
struct ipc_port {
-
/*
- * Initial sub-structure in common with ipc_pset and rpc_port
- * First element is an ipc_object
+ * Initial sub-structure in common with ipc_pset
+ * First element is an ipc_object second is a
+ * message queue
*/
struct ipc_object ip_object;
+ struct ipc_mqueue ip_messages;
union {
struct ipc_space *receiver;
ipc_port_timestamp_t timestamp;
} data;
- ipc_kobject_t ip_kobject;
- mach_port_mscount_t ip_mscount;
- mach_port_rights_t ip_srights;
- mach_port_rights_t ip_sorights;
+ union {
+ ipc_kobject_t kobject;
+ ipc_kobject_label_t kolabel;
+ ipc_importance_task_t imp_task;
+ ipc_port_t sync_inheritor_port;
+ struct knote *sync_inheritor_knote;
+ struct turnstile *sync_inheritor_ts;
+ } kdata;
struct ipc_port *ip_nsrequest;
struct ipc_port *ip_pdrequest;
- struct ipc_port_request *ip_dnrequests;
+ struct ipc_port_request *ip_requests;
+ union {
+ struct ipc_kmsg *premsg;
+ struct turnstile *send_turnstile;
+ } kdata2;
+
+ mach_vm_address_t ip_context;
+
+ natural_t ip_sprequests:1, /* send-possible requests outstanding */
+ ip_spimportant:1, /* ... at least one is importance donating */
+ ip_impdonation:1, /* port supports importance donation */
+ ip_tempowner:1, /* dont give donations to current receiver */
+ ip_guarded:1, /* port guarded (use context value as guard) */
+ ip_strict_guard:1, /* Strict guarding; Prevents user manipulation of context values directly */
+ ip_specialreply:1, /* port is a special reply port */
+ ip_sync_link_state:3, /* link the port to destination port/ Workloop */
+ ip_sync_bootstrap_checkin:1,/* port part of sync bootstrap checkin, push on thread doing the checkin */
+ ip_immovable_receive:1, /* the receive right cannot be moved out of a space, until it is destroyed */
+ ip_no_grant:1, /* Port wont accept complex messages containing (ool) port descriptors */
+ ip_immovable_send:1, /* No send(once) rights to this port can be moved out of a space */
+ ip_impcount:18; /* number of importance donations in nested queue */
- unsigned int ip_pset_count;
- struct ipc_mqueue ip_messages;
- struct ipc_kmsg *ip_premsg;
+ mach_port_mscount_t ip_mscount;
+ mach_port_rights_t ip_srights;
+ mach_port_rights_t ip_sorights;
-#if NORMA_VM
- /*
- * These fields are needed for the use of XMM.
- * Few ports need this information; it should
- * be kept in XMM instead (TBD). XXX
- */
- long ip_norma_xmm_object_refs;
- struct ipc_port *ip_norma_xmm_object;
+#if MACH_ASSERT
+#define IP_NSPARES 4
+#define IP_CALLSTACK_MAX 16
+/* queue_chain_t ip_port_links;*//* all allocated ports */
+ thread_t ip_thread; /* who made me? thread context */
+ unsigned long ip_timetrack; /* give an idea of "when" created */
+ uintptr_t ip_callstack[IP_CALLSTACK_MAX]; /* stack trace */
+ unsigned long ip_spares[IP_NSPARES]; /* for debugging */
+#endif /* MACH_ASSERT */
+#if DEVELOPMENT || DEBUG
+ uint8_t ip_srp_lost_link:1, /* special reply port turnstile link chain broken */
+ ip_srp_msg_sent:1; /* special reply port msg sent */
#endif
-
-#if MACH_ASSERT
-#define IP_NSPARES 10
-#define IP_CALLSTACK_MAX 10
- queue_chain_t ip_port_links; /* all allocated ports */
- natural_t ip_thread; /* who made me? thread context */
- unsigned long ip_timetrack; /* give an idea of "when" created */
- natural_t ip_callstack[IP_CALLSTACK_MAX]; /* stack trace */
- unsigned long ip_spares[IP_NSPARES]; /* for debugging */
-#endif /* MACH_ASSERT */
- int alias;
};
-#define ip_references ip_object.io_references
-#define ip_bits ip_object.io_bits
-#define ip_receiver_name ip_object.io_receiver_name
+#define ip_references ip_object.io_references
+
+#define ip_receiver_name ip_messages.imq_receiver_name
+#define ip_in_pset ip_messages.imq_in_pset
+#define ip_reply_context ip_messages.imq_context
+
+#define ip_receiver data.receiver
+#define ip_destination data.destination
+#define ip_timestamp data.timestamp
+
+#define ip_kobject kdata.kobject
+#define ip_kolabel kdata.kolabel
+#define ip_imp_task kdata.imp_task
+#define ip_sync_inheritor_port kdata.sync_inheritor_port
+#define ip_sync_inheritor_knote kdata.sync_inheritor_knote
+#define ip_sync_inheritor_ts kdata.sync_inheritor_ts
-#define ip_receiver data.receiver
-#define ip_destination data.destination
-#define ip_timestamp data.timestamp
+#define ip_premsg kdata2.premsg
+#define ip_send_turnstile kdata2.send_turnstile
-#define IP_NULL IPC_PORT_NULL
-#define IP_DEAD IPC_PORT_DEAD
-#define IP_VALID(port) IPC_PORT_VALID(port)
+#define port_send_turnstile(port) (IP_PREALLOC(port) ? (port)->ip_premsg->ikm_turnstile : (port)->ip_send_turnstile)
-#define ip_active(port) io_active(&(port)->ip_object)
-#define ip_lock_init(port) io_lock_init(&(port)->ip_object)
-#define ip_lock(port) io_lock(&(port)->ip_object)
-#define ip_lock_try(port) io_lock_try(&(port)->ip_object)
-#define ip_unlock(port) io_unlock(&(port)->ip_object)
-#define ip_check_unlock(port) io_check_unlock(&(port)->ip_object)
+#define set_port_send_turnstile(port, value) \
+MACRO_BEGIN \
+if (IP_PREALLOC(port)) { \
+ (port)->ip_premsg->ikm_turnstile = (value); \
+} else { \
+ (port)->ip_send_turnstile = (value); \
+} \
+MACRO_END
+
+#define port_send_turnstile_address(port) \
+(IP_PREALLOC(port) ? &((port)->ip_premsg->ikm_turnstile) : &((port)->ip_send_turnstile))
-#define ip_reference(port) io_reference(&(port)->ip_object)
-#define ip_release(port) io_release(&(port)->ip_object)
+#define port_rcv_turnstile_address(port) \
+ &(port)->ip_messages.imq_wait_queue.waitq_ts
-#define ip_kotype(port) io_kotype(&(port)->ip_object)
+
+/*
+ * SYNC IPC state flags for special reply port/ rcv right.
+ *
+ * PORT_SYNC_LINK_ANY
+ * Special reply port is not linked to any other port
+ * or WL and linkage should be allowed.
+ *
+ * PORT_SYNC_LINK_PORT
+ * Special reply port is linked to the port and
+ * ip_sync_inheritor_port contains the inheritor
+ * port.
+ *
+ * PORT_SYNC_LINK_WORKLOOP_KNOTE
+ * Special reply port is linked to a WL (via a knote).
+ * ip_sync_inheritor_knote contains a pointer to the knote
+ * the port is stashed on.
+ *
+ * PORT_SYNC_LINK_WORKLOOP_STASH
+ * Special reply port is linked to a WL (via a knote stash).
+ * ip_sync_inheritor_ts contains a pointer to the turnstile with a +1
+ * the port is stashed on.
+ *
+ * PORT_SYNC_LINK_NO_LINKAGE
+ * Message sent to special reply port, do
+ * not allow any linkages till receive is
+ * complete.
+ *
+ * PORT_SYNC_LINK_RCV_THREAD
+ * Receive right copied out as a part of bootstrap check in,
+ * push on the thread which copied out the port.
+ */
+#define PORT_SYNC_LINK_ANY (0)
+#define PORT_SYNC_LINK_PORT (0x1)
+#define PORT_SYNC_LINK_WORKLOOP_KNOTE (0x2)
+#define PORT_SYNC_LINK_WORKLOOP_STASH (0x3)
+#define PORT_SYNC_LINK_NO_LINKAGE (0x4)
+#define PORT_SYNC_LINK_RCV_THREAD (0x5)
+
+#define IP_NULL IPC_PORT_NULL
+#define IP_DEAD IPC_PORT_DEAD
+#define IP_VALID(port) IPC_PORT_VALID(port)
+
+#define ip_object_to_port(io) __container_of(io, struct ipc_port, ip_object)
+#define ip_to_object(port) (&(port)->ip_object)
+#define ip_active(port) io_active(ip_to_object(port))
+#define ip_lock_init(port) io_lock_init(ip_to_object(port))
+#define ip_lock_held(port) io_lock_held(ip_to_object(port))
+#define ip_lock(port) io_lock(ip_to_object(port))
+#define ip_lock_try(port) io_lock_try(ip_to_object(port))
+#define ip_lock_held_kdp(port) io_lock_held_kdp(ip_to_object(port))
+#define ip_unlock(port) io_unlock(ip_to_object(port))
+
+#define ip_reference(port) io_reference(ip_to_object(port))
+#define ip_release(port) io_release(ip_to_object(port))
+
+/* get an ipc_port pointer from an ipc_mqueue pointer */
+#define ip_from_mq(mq) \
+ __container_of(mq, struct ipc_port, ip_messages)
+
+#define ip_reference_mq(mq) ip_reference(ip_from_mq(mq))
+#define ip_release_mq(mq) ip_release(ip_from_mq(mq))
+
+#define ip_kotype(port) io_kotype(ip_to_object(port))
+#define ip_is_kobject(port) io_is_kobject(ip_to_object(port))
+#define ip_is_kolabeled(port) io_is_kolabeled(ip_to_object(port))
+#define ip_get_kobject(port) ipc_kobject_get(port)
+#define ip_label_check(space, port, msgt_name) \
+ (!ip_is_kolabeled(port) || ipc_kobject_label_check((space), (port), (msgt_name)))
+
+#define ip_full_kernel(port) imq_full_kernel(&(port)->ip_messages)
+#define ip_full(port) imq_full(&(port)->ip_messages)
/*
* JMM - Preallocation flag
* sends by critical system threads (which may be needed to free memory and
* therefore cannot be blocked waiting for memory themselves).
*/
-#define IP_BIT_PREALLOC 0x00008000 /* preallocated mesg */
-#define IP_PREALLOC(port) ((port)->ip_bits & IP_BIT_PREALLOC)
+#define IP_BIT_PREALLOC 0x00008000 /* preallocated mesg */
+#define IP_PREALLOC(port) ((port)->ip_object.io_bits & IP_BIT_PREALLOC)
-#define IP_SET_PREALLOC(port, kmsg) \
-MACRO_BEGIN \
- (port)->ip_bits |= IP_BIT_PREALLOC; \
- (port)->ip_premsg = (kmsg); \
+#define IP_SET_PREALLOC(port, kmsg) \
+MACRO_BEGIN \
+ (port)->ip_object.io_bits |= IP_BIT_PREALLOC; \
+ (port)->ip_premsg = (kmsg); \
MACRO_END
-#define IP_CLEAR_PREALLOC(port, kmsg) \
-MACRO_BEGIN \
- assert((port)->ip_premsg == kmsg); \
- (port)->ip_bits &= ~IP_BIT_PREALLOC; \
- (port)->ip_premsg = IKM_NULL; \
+#define IP_CLEAR_PREALLOC(port, kmsg) \
+MACRO_BEGIN \
+ assert((port)->ip_premsg == kmsg); \
+ (port)->ip_object.io_bits &= ~IP_BIT_PREALLOC; \
+ (port)->ip_premsg = IKM_NULL; \
MACRO_END
-#define IP_BIT_CLASSIC 0x00004000
-#define IP_CLASSIC(port) ((port)->ip_bits & IP_BIT_CLASSIC)
-
-#define IP_SET_CLASSIC(port) \
-MACRO_BEGIN \
- (port)->ip_bits |= IP_BIT_CLASSIC; \
-MACRO_END
-
-typedef ipc_table_index_t ipc_port_request_index_t;
-
-typedef struct ipc_port_request {
+/* JMM - address alignment/packing for LP64 */
+struct ipc_port_request {
union {
struct ipc_port *port;
ipc_port_request_index_t index;
mach_port_name_t name;
struct ipc_table_size *size;
} name;
-} *ipc_port_request_t;
+};
-#define ipr_next notify.index
-#define ipr_size name.size
+#define ipr_next notify.index
+#define ipr_size name.size
-#define ipr_soright notify.port
-#define ipr_name name.name
+#define ipr_soright notify.port
+#define ipr_name name.name
-#define IPR_NULL ((ipc_port_request_t) 0)
+/*
+ * Use the low bits in the ipr_soright to specify the request type
+ */
+#define IPR_SOR_SPARM_MASK 1 /* send-possible armed */
+#define IPR_SOR_SPREQ_MASK 2 /* send-possible requested */
+#define IPR_SOR_SPBIT_MASK 3 /* combo */
+#define IPR_SOR_SPARMED(sor) (((uintptr_t)(sor) & IPR_SOR_SPARM_MASK) != 0)
+#define IPR_SOR_SPREQ(sor) (((uintptr_t)(sor) & IPR_SOR_SPREQ_MASK) != 0)
+#define IPR_SOR_PORT(sor) ((ipc_port_t)((uintptr_t)(sor) & ~IPR_SOR_SPBIT_MASK))
+#define IPR_SOR_MAKE(p, m) ((ipc_port_t)((uintptr_t)(p) | (m)))
+
+extern lck_grp_t ipc_lck_grp;
+extern lck_attr_t ipc_lck_attr;
/*
* Taking the ipc_port_multiple lock grants the privilege
* when it is taken.
*/
-decl_mutex_data(extern,ipc_port_multiple_lock_data)
+extern lck_spin_t ipc_port_multiple_lock_data;
-#define ipc_port_multiple_lock_init() \
- mutex_init(&ipc_port_multiple_lock_data, ETAP_IPC_PORT_MULT)
+#define ipc_port_multiple_lock_init() \
+ lck_spin_init(&ipc_port_multiple_lock_data, &ipc_lck_grp, &ipc_lck_attr)
-#define ipc_port_multiple_lock() \
- mutex_lock(&ipc_port_multiple_lock_data)
+#define ipc_port_multiple_lock() \
+ lck_spin_lock_grp(&ipc_port_multiple_lock_data, &ipc_lck_grp)
-#define ipc_port_multiple_unlock() \
- mutex_unlock(&ipc_port_multiple_lock_data)
+#define ipc_port_multiple_unlock() \
+ lck_spin_unlock(&ipc_port_multiple_lock_data)
/*
* The port timestamp facility provides timestamps
* mach_port_names with port death.
*/
-decl_mutex_data(extern,ipc_port_timestamp_lock_data)
extern ipc_port_timestamp_t ipc_port_timestamp_data;
-#define ipc_port_timestamp_lock_init() \
- mutex_init(&ipc_port_timestamp_lock_data, ETAP_IPC_PORT_TIME)
-
-#define ipc_port_timestamp_lock() \
- mutex_lock(&ipc_port_timestamp_lock_data)
-
-#define ipc_port_timestamp_unlock() \
- mutex_unlock(&ipc_port_timestamp_lock_data)
-
/* Retrieve a port timestamp value */
extern ipc_port_timestamp_t ipc_port_timestamp(void);
* as long as one and two aren't too far apart.
*/
-#define IP_TIMESTAMP_ORDER(one, two) ((int) ((one) - (two)) < 0)
-
-#define ipc_port_translate_receive(space, name, portp) \
- ipc_object_translate((space), (name), \
- MACH_PORT_RIGHT_RECEIVE, \
- (ipc_object_t *) (portp))
-
-#define ipc_port_translate_send(space, name, portp) \
- ipc_object_translate((space), (name), \
- MACH_PORT_RIGHT_SEND, \
- (ipc_object_t *) (portp))
-
-/* Allocate a dead-name request slot */
+#define IP_TIMESTAMP_ORDER(one, two) ((int) ((one) - (two)) < 0)
+
+static inline void
+require_ip_active(ipc_port_t port)
+{
+ if (!ip_active(port)) {
+ panic("Using inactive port %p", port);
+ }
+}
+
+static inline kern_return_t
+ipc_port_translate(
+ ipc_space_t space,
+ mach_port_name_t name,
+ mach_port_right_t right,
+ ipc_port_t *portp)
+{
+ ipc_object_t object;
+ kern_return_t kr;
+
+ kr = ipc_object_translate(space, name, right, &object);
+ *portp = (kr == KERN_SUCCESS) ? ip_object_to_port(object) : IP_NULL;
+ return kr;
+}
+
+#define ipc_port_translate_receive(space, name, portp) \
+ ipc_port_translate((space), (name), MACH_PORT_RIGHT_RECEIVE, portp)
+
+#define ipc_port_translate_send(space, name, portp) \
+ ipc_port_translate((space), (name), MACH_PORT_RIGHT_SEND, portp)
+
+/* Allocate a notification request slot */
+#if IMPORTANCE_INHERITANCE
extern kern_return_t
-ipc_port_dnrequest(
- ipc_port_t port,
- mach_port_name_t name,
- ipc_port_t soright,
- ipc_port_request_index_t *indexp);
-
-/* Grow a port's table of dead-name requests */
-extern kern_return_t ipc_port_dngrow(
- ipc_port_t port,
- int target_size);
-
-/* Cancel a dead-name request and return the send-once right */
-extern ipc_port_t ipc_port_dncancel(
- ipc_port_t port,
- mach_port_name_t name,
- ipc_port_request_index_t index);
-
-#define ipc_port_dnrename(port, index, oname, nname) \
-MACRO_BEGIN \
- ipc_port_request_t ipr, table; \
- \
- assert(ip_active(port)); \
- \
- table = port->ip_dnrequests; \
- assert(table != IPR_NULL); \
- \
- ipr = &table[index]; \
- assert(ipr->ipr_name == oname); \
- \
- ipr->ipr_name = nname; \
-MACRO_END
+ipc_port_request_alloc(
+ ipc_port_t port,
+ mach_port_name_t name,
+ ipc_port_t soright,
+ boolean_t send_possible,
+ boolean_t immediate,
+ ipc_port_request_index_t *indexp,
+ boolean_t *importantp);
+#else
+extern kern_return_t
+ipc_port_request_alloc(
+ ipc_port_t port,
+ mach_port_name_t name,
+ ipc_port_t soright,
+ boolean_t send_possible,
+ boolean_t immediate,
+ ipc_port_request_index_t *indexp);
+#endif /* IMPORTANCE_INHERITANCE */
+
+/* Grow one of a port's tables of notifcation requests */
+extern kern_return_t ipc_port_request_grow(
+ ipc_port_t port,
+ ipc_table_elems_t target_size);
+
+/* Return the type(s) of notification requests outstanding */
+extern mach_port_type_t ipc_port_request_type(
+ ipc_port_t port,
+ mach_port_name_t name,
+ ipc_port_request_index_t index);
+
+/* Cancel a notification request and return the send-once right */
+extern ipc_port_t ipc_port_request_cancel(
+ ipc_port_t port,
+ mach_port_name_t name,
+ ipc_port_request_index_t index);
+
+/* Arm any delayed send-possible notification */
+extern boolean_t ipc_port_request_sparm(
+ ipc_port_t port,
+ mach_port_name_t name,
+ ipc_port_request_index_t index,
+ mach_msg_option_t option,
+ mach_msg_priority_t override);
/* Make a port-deleted request */
extern void ipc_port_pdrequest(
- ipc_port_t port,
- ipc_port_t notify,
- ipc_port_t *previousp);
+ ipc_port_t port,
+ ipc_port_t notify,
+ ipc_port_t *previousp);
/* Make a no-senders request */
extern void ipc_port_nsrequest(
- ipc_port_t port,
- mach_port_mscount_t sync,
- ipc_port_t notify,
- ipc_port_t *previousp);
-
-#define ipc_port_set_mscount(port, mscount) \
-MACRO_BEGIN \
- assert(ip_active(port)); \
- \
- (port)->ip_mscount = (mscount); \
-MACRO_END
+ ipc_port_t port,
+ mach_port_mscount_t sync,
+ ipc_port_t notify,
+ ipc_port_t *previousp);
/* Prepare a receive right for transmission/destruction */
-extern void ipc_port_clear_receiver(
- ipc_port_t port);
+extern boolean_t ipc_port_clear_receiver(
+ ipc_port_t port,
+ boolean_t should_destroy);
+
+__options_decl(ipc_port_init_flags_t, uint32_t, {
+ IPC_PORT_INIT_NONE = 0x00000000,
+ IPC_PORT_INIT_MAKE_SEND_RIGHT = 0x00000001,
+ IPC_PORT_INIT_MESSAGE_QUEUE = 0x00000002,
+ IPC_PORT_INIT_SPECIAL_REPLY = 0x00000004,
+});
/* Initialize a newly-allocated port */
extern void ipc_port_init(
- ipc_port_t port,
- ipc_space_t space,
- mach_port_name_t name);
+ ipc_port_t port,
+ ipc_space_t space,
+ ipc_port_init_flags_t flags,
+ mach_port_name_t name);
/* Allocate a port */
extern kern_return_t ipc_port_alloc(
- ipc_space_t space,
- mach_port_name_t *namep,
- ipc_port_t *portp);
+ ipc_space_t space,
+ ipc_port_init_flags_t flags,
+ mach_port_name_t *namep,
+ ipc_port_t *portp);
/* Allocate a port, with a specific name */
extern kern_return_t ipc_port_alloc_name(
- ipc_space_t space,
- mach_port_name_t name,
- ipc_port_t *portp);
+ ipc_space_t space,
+ ipc_port_init_flags_t flags,
+ mach_port_name_t name,
+ ipc_port_t *portp);
/* Generate dead name notifications */
extern void ipc_port_dnnotify(
- ipc_port_t port,
- ipc_port_request_t dnrequests);
+ ipc_port_t port);
+
+/* Generate send-possible notifications */
+extern void ipc_port_spnotify(
+ ipc_port_t port);
/* Destroy a port */
extern void ipc_port_destroy(
- ipc_port_t port);
+ ipc_port_t port);
-/* Check if queueing "port" in a message for "dest" would create a circular
- group of ports and messages */
+/* Check if queueing "port" in a message for "dest" would create a circular
+ * group of ports and messages */
extern boolean_t
ipc_port_check_circularity(
- ipc_port_t port,
- ipc_port_t dest);
+ ipc_port_t port,
+ ipc_port_t dest);
+
+#if IMPORTANCE_INHERITANCE
-/* Make a send-once notify port from a receive right */
-extern ipc_port_t ipc_port_lookup_notify(
- ipc_space_t space,
- mach_port_name_t name);
+enum {
+ IPID_OPTION_NORMAL = 0, /* normal boost */
+ IPID_OPTION_SENDPOSSIBLE = 1, /* send-possible induced boost */
+};
+
+/* link the destination port with special reply port */
+void
+ipc_port_link_special_reply_port(
+ ipc_port_t special_reply_port,
+ ipc_port_t dest_port,
+ boolean_t sync_bootstrap_checkin);
+
+#define IPC_PORT_ADJUST_SR_NONE 0
+#define IPC_PORT_ADJUST_SR_ALLOW_SYNC_LINKAGE 0x1
+#define IPC_PORT_ADJUST_SR_LINK_WORKLOOP 0x2
+#define IPC_PORT_ADJUST_UNLINK_THREAD 0x4
+#define IPC_PORT_ADJUST_SR_RECEIVED_MSG 0x8
+#define IPC_PORT_ADJUST_SR_ENABLE_EVENT 0x10
+#define IPC_PORT_ADJUST_RESET_BOOSTRAP_CHECKIN 0x20
+
+void
+ipc_special_reply_port_bits_reset(ipc_port_t special_reply_port);
+
+void
+ipc_special_reply_port_msg_sent(ipc_port_t special_reply_port);
+
+void
+ipc_special_reply_port_msg_sent(ipc_port_t special_reply_port);
+
+/* Adjust special reply port linkage */
+void
+ipc_port_adjust_special_reply_port_locked(
+ ipc_port_t special_reply_port,
+ struct knote *kn,
+ uint8_t flags,
+ boolean_t get_turnstile);
+
+void
+ipc_port_adjust_sync_link_state_locked(
+ ipc_port_t port,
+ int sync_link_state,
+ turnstile_inheritor_t inheritor);
+
+/* Adjust special reply port linkage */
+void
+ipc_port_adjust_special_reply_port(
+ ipc_port_t special_reply_port,
+ uint8_t flags);
+
+void
+ipc_port_adjust_port_locked(
+ ipc_port_t port,
+ struct knote *kn,
+ boolean_t sync_bootstrap_checkin);
+
+void
+ipc_port_clear_sync_rcv_thread_boost_locked(
+ ipc_port_t port);
+
+kern_return_t
+ipc_port_add_watchport_elem_locked(
+ ipc_port_t port,
+ struct task_watchport_elem *watchport_elem,
+ struct task_watchport_elem **old_elem);
+
+kern_return_t
+ipc_port_clear_watchport_elem_internal_conditional_locked(
+ ipc_port_t port,
+ struct task_watchport_elem *watchport_elem);
+
+kern_return_t
+ipc_port_replace_watchport_elem_conditional_locked(
+ ipc_port_t port,
+ struct task_watchport_elem *old_watchport_elem,
+ struct task_watchport_elem *new_watchport_elem);
+
+struct task_watchport_elem *
+ipc_port_clear_watchport_elem_internal(
+ ipc_port_t port);
+
+void
+ipc_port_send_turnstile_prepare(ipc_port_t port);
+
+void
+ipc_port_send_turnstile_complete(ipc_port_t port);
+
+struct waitq *
+ipc_port_rcv_turnstile_waitq(struct waitq *waitq);
+
+/* apply importance delta to port only */
+extern mach_port_delta_t
+ipc_port_impcount_delta(
+ ipc_port_t port,
+ mach_port_delta_t delta,
+ ipc_port_t base);
+
+/* apply importance delta to port, and return task importance for update */
+extern boolean_t
+ipc_port_importance_delta_internal(
+ ipc_port_t port,
+ natural_t options,
+ mach_port_delta_t *deltap,
+ ipc_importance_task_t *imp_task);
+
+/* Apply an importance delta to a port and reflect change in receiver task */
+extern boolean_t
+ipc_port_importance_delta(
+ ipc_port_t port,
+ natural_t options,
+ mach_port_delta_t delta);
+#endif /* IMPORTANCE_INHERITANCE */
/* Make a naked send right from a receive right - port locked and active */
extern ipc_port_t ipc_port_make_send_locked(
- ipc_port_t port);
+ ipc_port_t port);
/* Make a naked send right from a receive right */
extern ipc_port_t ipc_port_make_send(
- ipc_port_t port);
+ ipc_port_t port);
+
+/* Make a naked send right from another naked send right - port locked and active */
+extern void ipc_port_copy_send_locked(
+ ipc_port_t port);
/* Make a naked send right from another naked send right */
extern ipc_port_t ipc_port_copy_send(
- ipc_port_t port);
+ ipc_port_t port);
/* Copyout a naked send right */
extern mach_port_name_t ipc_port_copyout_send(
- ipc_port_t sright,
- ipc_space_t space);
+ ipc_port_t sright,
+ ipc_space_t space);
+
+#endif /* MACH_KERNEL_PRIVATE */
+
+#if KERNEL_PRIVATE
/* Release a (valid) naked send right */
extern void ipc_port_release_send(
- ipc_port_t port);
+ ipc_port_t port);
+
+extern void ipc_port_reference(
+ ipc_port_t port);
+
+extern void ipc_port_release(
+ ipc_port_t port);
+
+#endif /* KERNEL_PRIVATE */
+
+#ifdef MACH_KERNEL_PRIVATE
+
+/* Make a naked send-once right from a locked and active receive right */
+extern ipc_port_t ipc_port_make_sonce_locked(
+ ipc_port_t port);
/* Make a naked send-once right from a receive right */
extern ipc_port_t ipc_port_make_sonce(
- ipc_port_t port);
+ ipc_port_t port);
/* Release a naked send-once right */
extern void ipc_port_release_sonce(
- ipc_port_t port);
+ ipc_port_t port);
/* Release a naked (in limbo or in transit) receive right */
extern void ipc_port_release_receive(
- ipc_port_t port);
+ ipc_port_t port);
+
+/* finalize the destruction of a port before it gets freed */
+extern void ipc_port_finalize(
+ ipc_port_t port);
/* Allocate a port in a special space */
extern ipc_port_t ipc_port_alloc_special(
- ipc_space_t space);
+ ipc_space_t space,
+ ipc_port_init_flags_t flags);
/* Deallocate a port in a special space */
extern void ipc_port_dealloc_special(
- ipc_port_t port,
- ipc_space_t space);
+ ipc_port_t port,
+ ipc_space_t space);
-#if MACH_ASSERT
+#if MACH_ASSERT
/* Track low-level port deallocation */
extern void ipc_port_track_dealloc(
- ipc_port_t port);
+ ipc_port_t port);
/* Initialize general port debugging state */
extern void ipc_port_debug_init(void);
-#endif /* MACH_ASSERT */
+#endif /* MACH_ASSERT */
+
+extern void ipc_port_recv_update_inheritor(ipc_port_t port,
+ struct turnstile *turnstile,
+ turnstile_update_flags_t flags);
-#define ipc_port_alloc_kernel() \
- ipc_port_alloc_special(ipc_space_kernel)
-#define ipc_port_dealloc_kernel(port) \
- ipc_port_dealloc_special((port), ipc_space_kernel)
+extern void ipc_port_send_update_inheritor(ipc_port_t port,
+ struct turnstile *turnstile,
+ turnstile_update_flags_t flags);
-#define ipc_port_alloc_reply() \
- ipc_port_alloc_special(ipc_space_reply)
-#define ipc_port_dealloc_reply(port) \
- ipc_port_dealloc_special((port), ipc_space_reply)
+#define ipc_port_alloc_kernel() \
+ ipc_port_alloc_special(ipc_space_kernel, IPC_PORT_INIT_NONE)
+#define ipc_port_dealloc_kernel(port) \
+ ipc_port_dealloc_special((port), ipc_space_kernel)
-#define ipc_port_reference(port) \
- ipc_object_reference(&(port)->ip_object)
+#define ipc_port_alloc_reply() \
+ ipc_port_alloc_special(ipc_space_reply, IPC_PORT_INIT_MESSAGE_QUEUE)
+#define ipc_port_dealloc_reply(port) \
+ ipc_port_dealloc_special((port), ipc_space_reply)
-#define ipc_port_release(port) \
- ipc_object_release(&(port)->ip_object)
+#endif /* MACH_KERNEL_PRIVATE */
-#endif /* _IPC_IPC_PORT_H_ */
+#endif /* _IPC_IPC_PORT_H_ */
projects / apple / xnu.git / blobdiff