* Copyright (c) 2000-2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
-/*
+/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 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.
*/
void
ipc_task_init(
- task_t task,
- task_t parent)
+ task_t task,
+ task_t parent)
{
ipc_space_t space;
ipc_port_t kport;
kr = ipc_space_create(&ipc_table_entries[0], &space);
- if (kr != KERN_SUCCESS)
+ if (kr != KERN_SUCCESS) {
panic("ipc_task_init");
+ }
space->is_task = task;
kport = ipc_port_alloc_kernel();
- if (kport == IP_NULL)
+ if (kport == IP_NULL) {
panic("ipc_task_init");
+ }
nport = ipc_port_alloc_kernel();
- if (nport == IP_NULL)
+ if (nport == IP_NULL) {
panic("ipc_task_init");
+ }
itk_lock_init(task);
task->itk_self = kport;
task->itk_space = space;
#if CONFIG_MACF
+ task->exc_actions[0].label = NULL;
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; i++) {
mac_exc_associate_action_label(&task->exc_actions[i], mac_exc_create_label());
}
#endif
-
+
+ /* always zero-out the first (unused) array element */
+ bzero(&task->exc_actions[0], sizeof(task->exc_actions[0]));
+
if (parent == TASK_NULL) {
ipc_port_t port;
-
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; i++) {
task->exc_actions[i].port = IP_NULL;
+ task->exc_actions[i].flavor = 0;
+ task->exc_actions[i].behavior = 0;
+ task->exc_actions[i].privileged = FALSE;
}/* for */
-
+
kr = host_get_host_port(host_priv_self(), &port);
assert(kr == KERN_SUCCESS);
task->itk_host = port;
task->itk_gssd = IP_NULL;
task->itk_task_access = IP_NULL;
- for (i = 0; i < TASK_PORT_REGISTER_MAX; i++)
+ for (i = 0; i < TASK_PORT_REGISTER_MAX; i++) {
task->itk_registered[i] = IP_NULL;
+ }
} else {
itk_lock(parent);
assert(parent->itk_self != IP_NULL);
/* inherit registered ports */
- for (i = 0; i < TASK_PORT_REGISTER_MAX; i++)
+ for (i = 0; i < TASK_PORT_REGISTER_MAX; i++) {
task->itk_registered[i] =
- ipc_port_copy_send(parent->itk_registered[i]);
+ ipc_port_copy_send(parent->itk_registered[i]);
+ }
/* inherit exception and bootstrap ports */
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; i++) {
- task->exc_actions[i].port =
- ipc_port_copy_send(parent->exc_actions[i].port);
- task->exc_actions[i].flavor =
- parent->exc_actions[i].flavor;
- task->exc_actions[i].behavior =
- parent->exc_actions[i].behavior;
- task->exc_actions[i].privileged =
- parent->exc_actions[i].privileged;
+ task->exc_actions[i].port =
+ ipc_port_copy_send(parent->exc_actions[i].port);
+ task->exc_actions[i].flavor =
+ parent->exc_actions[i].flavor;
+ task->exc_actions[i].behavior =
+ parent->exc_actions[i].behavior;
+ task->exc_actions[i].privileged =
+ parent->exc_actions[i].privileged;
#if CONFIG_MACF
- mac_exc_inherit_action_label(parent->exc_actions + i, task->exc_actions + i);
+ mac_exc_inherit_action_label(parent->exc_actions + i, task->exc_actions + i);
#endif
}/* for */
task->itk_host =
- ipc_port_copy_send(parent->itk_host);
+ ipc_port_copy_send(parent->itk_host);
task->itk_bootstrap =
- ipc_port_copy_send(parent->itk_bootstrap);
+ ipc_port_copy_send(parent->itk_bootstrap);
task->itk_seatbelt =
- ipc_port_copy_send(parent->itk_seatbelt);
+ ipc_port_copy_send(parent->itk_seatbelt);
task->itk_gssd =
- ipc_port_copy_send(parent->itk_gssd);
+ ipc_port_copy_send(parent->itk_gssd);
task->itk_task_access =
- ipc_port_copy_send(parent->itk_task_access);
+ ipc_port_copy_send(parent->itk_task_access);
itk_unlock(parent);
}
void
ipc_task_enable(
- task_t task)
+ task_t task)
{
ipc_port_t kport;
ipc_port_t nport;
itk_lock(task);
kport = task->itk_self;
- if (kport != IP_NULL)
+ if (kport != IP_NULL) {
ipc_kobject_set(kport, (ipc_kobject_t) task, IKOT_TASK);
+ }
nport = task->itk_nself;
- if (nport != IP_NULL)
+ if (nport != IP_NULL) {
ipc_kobject_set(nport, (ipc_kobject_t) task, IKOT_TASK_NAME);
+ }
itk_unlock(task);
}
void
ipc_task_disable(
- task_t task)
+ task_t task)
{
ipc_port_t kport;
ipc_port_t nport;
itk_lock(task);
kport = task->itk_self;
- if (kport != IP_NULL)
+ if (kport != IP_NULL) {
ipc_kobject_set(kport, IKO_NULL, IKOT_NONE);
+ }
nport = task->itk_nself;
- if (nport != IP_NULL)
+ if (nport != IP_NULL) {
ipc_kobject_set(nport, IKO_NULL, IKOT_NONE);
+ }
rport = task->itk_resume;
if (rport != IP_NULL) {
*
* There are still outstanding suspensions on this task,
* even as it is being torn down. Disconnect the task
- * from the rport, thereby "orphaning" the rport. The rport
+ * from the rport, thereby "orphaning" the rport. The rport
* itself will go away only when the last suspension holder
* destroys his SO right to it -- when he either
* exits, or tries to actually use that last SO right to
void
ipc_task_terminate(
- task_t task)
+ task_t task)
{
ipc_port_t kport;
ipc_port_t nport;
- ipc_port_t rport;
+ ipc_port_t rport;
int i;
itk_lock(task);
/* release the naked send rights */
- if (IP_VALID(task->itk_sself))
+ if (IP_VALID(task->itk_sself)) {
ipc_port_release_send(task->itk_sself);
+ }
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; i++) {
if (IP_VALID(task->exc_actions[i].port)) {
#endif
}
- if (IP_VALID(task->itk_host))
+ if (IP_VALID(task->itk_host)) {
ipc_port_release_send(task->itk_host);
+ }
- if (IP_VALID(task->itk_bootstrap))
+ if (IP_VALID(task->itk_bootstrap)) {
ipc_port_release_send(task->itk_bootstrap);
+ }
- if (IP_VALID(task->itk_seatbelt))
+ if (IP_VALID(task->itk_seatbelt)) {
ipc_port_release_send(task->itk_seatbelt);
-
- if (IP_VALID(task->itk_gssd))
+ }
+
+ if (IP_VALID(task->itk_gssd)) {
ipc_port_release_send(task->itk_gssd);
+ }
- if (IP_VALID(task->itk_task_access))
+ if (IP_VALID(task->itk_task_access)) {
ipc_port_release_send(task->itk_task_access);
+ }
- if (IP_VALID(task->itk_debug_control))
+ if (IP_VALID(task->itk_debug_control)) {
ipc_port_release_send(task->itk_debug_control);
+ }
- for (i = 0; i < TASK_PORT_REGISTER_MAX; i++)
- if (IP_VALID(task->itk_registered[i]))
+ for (i = 0; i < TASK_PORT_REGISTER_MAX; i++) {
+ if (IP_VALID(task->itk_registered[i])) {
ipc_port_release_send(task->itk_registered[i]);
+ }
+ }
/* destroy the kernel ports */
ipc_port_dealloc_kernel(kport);
ipc_port_dealloc_kernel(nport);
- if (rport != IP_NULL)
- ipc_port_dealloc_kernel(rport);
+ if (rport != IP_NULL) {
+ ipc_port_dealloc_kernel(rport);
+ }
itk_lock_destroy(task);
}
void
ipc_task_reset(
- task_t task)
+ task_t task)
{
ipc_port_t old_kport, new_kport;
ipc_port_t old_sself;
/* Fresh label to unset credentials in existing labels. */
struct label *unset_label = mac_exc_create_label();
#endif
-
- new_kport = ipc_port_alloc_kernel();
- if (new_kport == IP_NULL)
- panic("ipc_task_reset");
+
+ new_kport = ipc_kobject_alloc_port((ipc_kobject_t)task, IKOT_TASK,
+ IPC_KOBJECT_ALLOC_MAKE_SEND);
itk_lock(task);
if (old_kport == IP_NULL) {
/* the task is already terminated (can this happen?) */
itk_unlock(task);
+ ipc_port_release_send(new_kport);
ipc_port_dealloc_kernel(new_kport);
#if CONFIG_MACF
mac_exc_free_label(unset_label);
return;
}
- task->itk_self = new_kport;
old_sself = task->itk_sself;
- task->itk_sself = ipc_port_make_send(new_kport);
+ task->itk_sself = task->itk_self = new_kport;
/* Set the old kport to IKOT_NONE and update the exec token while under the port lock */
ip_lock(old_kport);
task->exec_token += 1;
ip_unlock(old_kport);
- ipc_kobject_set(new_kport, (ipc_kobject_t) task, IKOT_TASK);
-
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; i++) {
old_exc_actions[i] = IP_NULL;
task->exc_actions[i].port = IP_NULL;
}
}/* for */
-
+
if (IP_VALID(task->itk_debug_control)) {
ipc_port_release_send(task->itk_debug_control);
}
task->itk_debug_control = IP_NULL;
-
+
itk_unlock(task);
#if CONFIG_MACF
/* release the naked send rights */
- if (IP_VALID(old_sself))
+ if (IP_VALID(old_sself)) {
ipc_port_release_send(old_sself);
+ }
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; i++) {
if (IP_VALID(old_exc_actions[i])) {
void
ipc_thread_init(
- thread_t thread)
+ thread_t thread)
{
- ipc_port_t kport;
+ ipc_port_t kport;
- kport = ipc_port_alloc_kernel();
- if (kport == IP_NULL)
- panic("ipc_thread_init");
+ kport = ipc_kobject_alloc_port((ipc_kobject_t)thread, IKOT_THREAD,
+ IPC_KOBJECT_ALLOC_MAKE_SEND);
- thread->ith_self = kport;
- thread->ith_sself = ipc_port_make_send(kport);
+ thread->ith_sself = thread->ith_self = kport;
thread->ith_special_reply_port = NULL;
thread->exc_actions = NULL;
- ipc_kobject_set(kport, (ipc_kobject_t)thread, IKOT_THREAD);
-
#if IMPORTANCE_INHERITANCE
thread->ith_assertions = 0;
#endif
void
ipc_thread_init_exc_actions(
- thread_t thread)
+ thread_t thread)
{
assert(thread->exc_actions == NULL);
void
ipc_thread_destroy_exc_actions(
- thread_t thread)
+ thread_t thread)
{
if (thread->exc_actions != NULL) {
#if CONFIG_MACF
}
#endif
- kfree(thread->exc_actions,
- sizeof(struct exception_action) * EXC_TYPES_COUNT);
+ kfree(thread->exc_actions,
+ sizeof(struct exception_action) * EXC_TYPES_COUNT);
thread->exc_actions = NULL;
}
}
void
ipc_thread_disable(
- thread_t thread)
+ thread_t thread)
{
- ipc_port_t kport = thread->ith_self;
+ ipc_port_t kport = thread->ith_self;
- if (kport != IP_NULL)
+ if (kport != IP_NULL) {
ipc_kobject_set(kport, IKO_NULL, IKOT_NONE);
+ }
+
+ /* unbind the thread special reply port */
+ if (IP_VALID(thread->ith_special_reply_port)) {
+ ipc_port_unbind_special_reply_port(thread, TRUE);
+ }
}
/*
void
ipc_thread_terminate(
- thread_t thread)
+ thread_t thread)
{
- ipc_port_t kport = thread->ith_self;
+ ipc_port_t kport = thread->ith_self;
if (kport != IP_NULL) {
- int i;
+ int i;
- if (IP_VALID(thread->ith_sself))
+ if (IP_VALID(thread->ith_sself)) {
ipc_port_release_send(thread->ith_sself);
+ }
thread->ith_sself = thread->ith_self = IP_NULL;
if (thread->exc_actions != NULL) {
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; ++i) {
- if (IP_VALID(thread->exc_actions[i].port))
+ if (IP_VALID(thread->exc_actions[i].port)) {
ipc_port_release_send(thread->exc_actions[i].port);
+ }
}
ipc_thread_destroy_exc_actions(thread);
}
assert(thread->ith_assertions == 0);
#endif
- /* unbind the thread special reply port */
- if (IP_VALID(thread->ith_special_reply_port)) {
- ipc_port_unbind_special_reply_port(thread, TRUE);
- }
-
assert(ipc_kmsg_queue_empty(&thread->ith_messages));
- if (thread->ith_rpc_reply != IP_NULL)
+ if (thread->ith_rpc_reply != IP_NULL) {
ipc_port_dealloc_reply(thread->ith_rpc_reply);
+ }
thread->ith_rpc_reply = IP_NULL;
}
* Purpose:
* Reset the IPC state for a given Mach thread when
* its task enters an elevated security context.
- * Both the thread port and its exception ports have
+ * Both the thread port and its exception ports have
* to be reset. Its RPC reply port cannot have any
* rights outstanding, so it should be fine.
* Conditions:
void
ipc_thread_reset(
- thread_t thread)
+ thread_t thread)
{
ipc_port_t old_kport, new_kport;
ipc_port_t old_sself;
ipc_port_t old_exc_actions[EXC_TYPES_COUNT];
- boolean_t has_old_exc_actions = FALSE;
- int i;
+ boolean_t has_old_exc_actions = FALSE;
+ int i;
#if CONFIG_MACF
struct label *new_label = mac_exc_create_label();
#endif
-
- new_kport = ipc_port_alloc_kernel();
- if (new_kport == IP_NULL)
- panic("ipc_task_reset");
+
+ new_kport = ipc_kobject_alloc_port((ipc_kobject_t)thread, IKOT_THREAD,
+ IPC_KOBJECT_ALLOC_MAKE_SEND);
thread_mtx_lock(thread);
old_kport = thread->ith_self;
+ old_sself = thread->ith_sself;
if (old_kport == IP_NULL && thread->inspection == FALSE) {
/* the is already terminated (can this happen?) */
thread_mtx_unlock(thread);
+ ipc_port_release_send(new_kport);
ipc_port_dealloc_kernel(new_kport);
#if CONFIG_MACF
mac_exc_free_label(new_label);
return;
}
- thread->ith_self = new_kport;
- old_sself = thread->ith_sself;
- thread->ith_sself = ipc_port_make_send(new_kport);
+ thread->ith_sself = thread->ith_self = new_kport;
if (old_kport != IP_NULL) {
ipc_kobject_set(old_kport, IKO_NULL, IKOT_NONE);
}
- ipc_kobject_set(new_kport, (ipc_kobject_t) thread, IKOT_THREAD);
/*
* Only ports that were set by root-owned processes
- * (privileged ports) should survive
+ * (privileged ports) should survive
*/
if (thread->exc_actions != NULL) {
has_old_exc_actions = TRUE;
mac_exc_update_action_label(thread->exc_actions + i, new_label);
#endif
old_exc_actions[i] = thread->exc_actions[i].port;
- thread->exc_actions[i].port = IP_NULL;
+ thread->exc_actions[i].port = IP_NULL;
}
}
}
#if CONFIG_MACF
mac_exc_free_label(new_label);
#endif
-
+
/* release the naked send rights */
- if (IP_VALID(old_sself))
+ if (IP_VALID(old_sself)) {
ipc_port_release_send(old_sself);
+ }
if (has_old_exc_actions) {
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; i++) {
ipc_port_t
retrieve_task_self_fast(
- task_t task)
+ task_t task)
{
+ __assert_only ipc_port_t sright;
ipc_port_t port;
assert(task == current_task());
if ((port = task->itk_sself) == task->itk_self) {
/* no interposing */
-
- ip_lock(port);
- assert(ip_active(port));
- ip_reference(port);
- port->ip_srights++;
- ip_unlock(port);
- } else
+ sright = ipc_port_copy_send(port);
+ assert(sright == port);
+ } else {
port = ipc_port_copy_send(port);
+ }
itk_unlock(task);
return port;
ipc_port_t
retrieve_thread_self_fast(
- thread_t thread)
+ thread_t thread)
{
+ __assert_only ipc_port_t sright;
ipc_port_t port;
assert(thread == current_thread());
if ((port = thread->ith_sself) == thread->ith_self) {
/* no interposing */
-
- ip_lock(port);
- assert(ip_active(port));
- ip_reference(port);
- port->ip_srights++;
- ip_unlock(port);
- }
- else
+ sright = ipc_port_copy_send(port);
+ assert(sright == port);
+ } else {
port = ipc_port_copy_send(port);
+ }
thread_mtx_unlock(thread);
sright = retrieve_thread_self_fast(thread);
name = ipc_port_copyout_send(sright, task->itk_space);
return name;
-
}
/*
mach_port_name_t name;
kern_return_t kr;
- kr = ipc_port_alloc(current_task()->itk_space, &name, &port);
- if (kr == KERN_SUCCESS)
+ kr = ipc_port_alloc(current_task()->itk_space, IPC_PORT_INIT_MESSAGE_QUEUE,
+ &name, &port);
+ if (kr == KERN_SUCCESS) {
ip_unlock(port);
- else
+ } else {
name = MACH_PORT_NULL;
+ }
return name;
}
{
ipc_port_t port;
mach_port_name_t name;
- mach_port_name_t send_name;
kern_return_t kr;
thread_t thread = current_thread();
+ ipc_port_init_flags_t flags = IPC_PORT_INIT_MESSAGE_QUEUE |
+ IPC_PORT_INIT_MAKE_SEND_RIGHT | IPC_PORT_INIT_SPECIAL_REPLY;
/* unbind the thread special reply port */
if (IP_VALID(thread->ith_special_reply_port)) {
}
}
- kr = ipc_port_alloc(current_task()->itk_space, &name, &port);
+ kr = ipc_port_alloc(current_task()->itk_space, flags, &name, &port);
if (kr == KERN_SUCCESS) {
ipc_port_bind_special_reply_port_locked(port);
-
- /* Make a send right and insert it in the space at specified name */
- ipc_port_make_send_locked(port);
ip_unlock(port);
- send_name = ipc_port_copyout_name_send(port, current_task()->itk_space, name);
- /*
- * If insertion of send right failed, userland is doing something bad, error out.
- * The space was marked inactive or the receive right just inserted above at the
- * given name was moved, in either case do not try to deallocate the receive right.
- */
- if (send_name == MACH_PORT_NULL || send_name == MACH_PORT_DEAD) {
- if (IP_VALID(thread->ith_special_reply_port)) {
- ipc_port_unbind_special_reply_port(thread, TRUE);
- }
- name = MACH_PORT_NULL;
- }
} else {
name = MACH_PORT_NULL;
}
{
thread_t thread = current_thread();
assert(thread->ith_special_reply_port == NULL);
+ assert(port->ip_specialreply);
+ assert(port->ip_sync_link_state == PORT_SYNC_LINK_ANY);
ip_reference(port);
thread->ith_special_reply_port = port;
- port->ip_specialreply = 1;
- port->ip_sync_link_state = PORT_SYNC_LINK_ANY;
+ port->ip_messages.imq_srp_owner_thread = thread;
- reset_ip_srp_bits(port);
+ ipc_special_reply_port_bits_reset(port);
}
/*
thread->ith_special_reply_port = NULL;
ipc_port_adjust_special_reply_port_locked(special_reply_port, NULL,
- IPC_PORT_ADJUST_SR_CLEAR_SPECIAL_REPLY, FALSE);
+ IPC_PORT_ADJUST_UNLINK_THREAD, FALSE);
/* port unlocked */
ip_release(special_reply_port);
kern_return_t
thread_get_special_port(
- thread_t thread,
- int which,
- ipc_port_t *portp)
+ thread_t thread,
+ int which,
+ ipc_port_t *portp)
{
- kern_return_t result = KERN_SUCCESS;
- ipc_port_t *whichp;
+ kern_return_t result = KERN_SUCCESS;
+ ipc_port_t *whichp;
- if (thread == THREAD_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (thread == THREAD_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
switch (which) {
-
case THREAD_KERNEL_PORT:
whichp = &thread->ith_sself;
break;
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
- thread_mtx_lock(thread);
+ thread_mtx_lock(thread);
- if (thread->active)
+ if (thread->active) {
*portp = ipc_port_copy_send(*whichp);
- else
+ } else {
result = KERN_FAILURE;
+ }
thread_mtx_unlock(thread);
- return (result);
+ return result;
}
/*
kern_return_t
thread_set_special_port(
- thread_t thread,
- int which,
- ipc_port_t port)
+ thread_t thread,
+ int which,
+ ipc_port_t port)
{
- kern_return_t result = KERN_SUCCESS;
- ipc_port_t *whichp, old = IP_NULL;
+ kern_return_t result = KERN_SUCCESS;
+ ipc_port_t *whichp, old = IP_NULL;
- if (thread == THREAD_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (thread == THREAD_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
switch (which) {
-
case THREAD_KERNEL_PORT:
whichp = &thread->ith_sself;
break;
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
thread_mtx_lock(thread);
if (thread->active) {
old = *whichp;
*whichp = port;
- }
- else
+ } else {
result = KERN_FAILURE;
+ }
thread_mtx_unlock(thread);
- if (IP_VALID(old))
+ if (IP_VALID(old)) {
ipc_port_release_send(old);
+ }
- return (result);
+ return result;
}
/*
kern_return_t
task_get_special_port(
- task_t task,
- int which,
- ipc_port_t *portp)
+ task_t task,
+ int which,
+ ipc_port_t *portp)
{
ipc_port_t port;
- if (task == TASK_NULL)
+ if (task == TASK_NULL) {
return KERN_INVALID_ARGUMENT;
+ }
itk_lock(task);
if (task->itk_self == IP_NULL) {
break;
default:
- itk_unlock(task);
+ itk_unlock(task);
return KERN_INVALID_ARGUMENT;
}
itk_unlock(task);
* KERN_INVALID_ARGUMENT The task is null.
* KERN_FAILURE The task/space is dead.
* KERN_INVALID_ARGUMENT Invalid special port.
- * KERN_NO_ACCESS Attempted overwrite of seatbelt port.
+ * KERN_NO_ACCESS Attempted overwrite of seatbelt port.
*/
kern_return_t
task_set_special_port(
- task_t task,
- int which,
- ipc_port_t port)
+ task_t task,
+ int which,
+ ipc_port_t port)
{
ipc_port_t *whichp;
ipc_port_t old;
- if (task == TASK_NULL)
+ if (task == TASK_NULL) {
return KERN_INVALID_ARGUMENT;
+ }
+
+ if (task_is_driver(current_task())) {
+ return KERN_NO_ACCESS;
+ }
switch (which) {
case TASK_KERNEL_PORT:
- whichp = &task->itk_sself;
- break;
+ whichp = &task->itk_sself;
+ break;
case TASK_HOST_PORT:
- whichp = &task->itk_host;
- break;
+ whichp = &task->itk_host;
+ break;
case TASK_BOOTSTRAP_PORT:
- whichp = &task->itk_bootstrap;
- break;
+ whichp = &task->itk_bootstrap;
+ break;
case TASK_SEATBELT_PORT:
- whichp = &task->itk_seatbelt;
- break;
+ whichp = &task->itk_seatbelt;
+ break;
case TASK_ACCESS_PORT:
- whichp = &task->itk_task_access;
- break;
+ whichp = &task->itk_task_access;
+ break;
case TASK_DEBUG_CONTROL_PORT:
- whichp = &task->itk_debug_control;
- break;
+ whichp = &task->itk_debug_control;
+ break;
default:
- return KERN_INVALID_ARGUMENT;
+ return KERN_INVALID_ARGUMENT;
}/* switch */
itk_lock(task);
}
/* do not allow overwrite of seatbelt or task access ports */
- if ((TASK_SEATBELT_PORT == which || TASK_ACCESS_PORT == which)
- && IP_VALID(*whichp)) {
- itk_unlock(task);
- return KERN_NO_ACCESS;
+ if ((TASK_SEATBELT_PORT == which || TASK_ACCESS_PORT == which)
+ && IP_VALID(*whichp)) {
+ itk_unlock(task);
+ return KERN_NO_ACCESS;
}
old = *whichp;
*whichp = port;
itk_unlock(task);
- if (IP_VALID(old))
+ if (IP_VALID(old)) {
ipc_port_release_send(old);
+ }
return KERN_SUCCESS;
}
kern_return_t
mach_ports_register(
- task_t task,
- mach_port_array_t memory,
- mach_msg_type_number_t portsCnt)
+ task_t task,
+ mach_port_array_t memory,
+ mach_msg_type_number_t portsCnt)
{
ipc_port_t ports[TASK_PORT_REGISTER_MAX];
unsigned int i;
if ((task == TASK_NULL) ||
(portsCnt > TASK_PORT_REGISTER_MAX) ||
- (portsCnt && memory == NULL))
+ (portsCnt && memory == NULL)) {
return KERN_INVALID_ARGUMENT;
+ }
/*
* Pad the port rights with nulls.
*/
- for (i = 0; i < portsCnt; i++)
+ for (i = 0; i < portsCnt; i++) {
ports[i] = memory[i];
- for (; i < TASK_PORT_REGISTER_MAX; i++)
+ }
+ for (; i < TASK_PORT_REGISTER_MAX; i++) {
ports[i] = IP_NULL;
+ }
itk_lock(task);
if (task->itk_self == IP_NULL) {
itk_unlock(task);
- for (i = 0; i < TASK_PORT_REGISTER_MAX; i++)
- if (IP_VALID(ports[i]))
+ for (i = 0; i < TASK_PORT_REGISTER_MAX; i++) {
+ if (IP_VALID(ports[i])) {
ipc_port_release_send(ports[i]);
+ }
+ }
/*
* Now that the operation is known to be successful,
* we can free the memory.
*/
- if (portsCnt != 0)
+ if (portsCnt != 0) {
kfree(memory,
- (vm_size_t) (portsCnt * sizeof(mach_port_t)));
+ (vm_size_t) (portsCnt * sizeof(mach_port_t)));
+ }
return KERN_SUCCESS;
}
kern_return_t
mach_ports_lookup(
- task_t task,
- mach_port_array_t *portsp,
- mach_msg_type_number_t *portsCnt)
+ task_t task,
+ mach_port_array_t *portsp,
+ mach_msg_type_number_t *portsCnt)
{
void *memory;
vm_size_t size;
ipc_port_t *ports;
int i;
- if (task == TASK_NULL)
+ if (task == TASK_NULL) {
return KERN_INVALID_ARGUMENT;
+ }
size = (vm_size_t) (TASK_PORT_REGISTER_MAX * sizeof(ipc_port_t));
memory = kalloc(size);
- if (memory == 0)
+ if (memory == 0) {
return KERN_RESOURCE_SHORTAGE;
+ }
itk_lock(task);
if (task->itk_self == IP_NULL) {
* is wired, we won't fault while holding the task lock.
*/
- for (i = 0; i < TASK_PORT_REGISTER_MAX; i++)
+ for (i = 0; i < TASK_PORT_REGISTER_MAX; i++) {
ports[i] = ipc_port_copy_send(task->itk_registered[i]);
+ }
itk_unlock(task);
return KERN_SUCCESS;
}
+extern zone_t task_zone;
+
kern_return_t
task_conversion_eval(task_t caller, task_t victim)
{
return KERN_INVALID_SECURITY;
}
+ zone_require(victim, task_zone);
+
#if CONFIG_EMBEDDED
/*
* On embedded platforms, only a platform binary can resolve the task port
*/
if (task_lock_try(task)) {
ip_unlock(port);
- return(task);
+ return task;
}
try_failed_count++;
task_inspect_t
convert_port_to_locked_task_inspect(ipc_port_t port)
{
- int try_failed_count = 0;
+ int try_failed_count = 0;
while (IP_VALID(port)) {
task_inspect_t task;
return TASK_INSPECT_NULL;
}
-
-/*
- * Routine: convert_port_to_task
- * Purpose:
- * Convert from a port to a task.
- * Doesn't consume the port ref; produces a task ref,
- * which may be null.
- * Conditions:
- * Nothing locked.
- */
-task_t
-convert_port_to_task(
- ipc_port_t port)
+static task_t
+convert_port_to_task_locked(
+ ipc_port_t port,
+ uint32_t *exec_token)
{
- return convert_port_to_task_with_exec_token(port, NULL);
+ task_t task = TASK_NULL;
+
+ ip_lock_held(port);
+ require_ip_active(port);
+
+ if (ip_kotype(port) == IKOT_TASK) {
+ task_t ct = current_task();
+ task = (task_t)port->ip_kobject;
+ assert(task != TASK_NULL);
+
+ if (task_conversion_eval(ct, task)) {
+ return TASK_NULL;
+ }
+
+ if (exec_token) {
+ *exec_token = task->exec_token;
+ }
+ task_reference_internal(task);
+ }
+
+ return task;
}
/*
*/
task_t
convert_port_to_task_with_exec_token(
- ipc_port_t port,
- uint32_t *exec_token)
+ ipc_port_t port,
+ uint32_t *exec_token)
{
- task_t task = TASK_NULL;
+ task_t task = TASK_NULL;
if (IP_VALID(port)) {
ip_lock(port);
-
- if ( ip_active(port) &&
- ip_kotype(port) == IKOT_TASK ) {
- task_t ct = current_task();
- task = (task_t)port->ip_kobject;
- assert(task != TASK_NULL);
-
- if (task_conversion_eval(ct, task)) {
- ip_unlock(port);
- return TASK_NULL;
- }
-
- if (exec_token) {
- *exec_token = task->exec_token;
- }
- task_reference_internal(task);
+ if (ip_active(port)) {
+ task = convert_port_to_task_locked(port, exec_token);
}
-
ip_unlock(port);
}
- return (task);
+ return task;
}
+/*
+ * Routine: convert_port_to_task
+ * Purpose:
+ * Convert from a port to a task.
+ * Doesn't consume the port ref; produces a task ref,
+ * which may be null.
+ * Conditions:
+ * Nothing locked.
+ */
+task_t
+convert_port_to_task(
+ ipc_port_t port)
+{
+ return convert_port_to_task_with_exec_token(port, NULL);
+}
+
+
/*
* Routine: convert_port_to_task_name
* Purpose:
*/
task_name_t
convert_port_to_task_name(
- ipc_port_t port)
+ ipc_port_t port)
{
- task_name_t task = TASK_NULL;
+ task_name_t task = TASK_NULL;
if (IP_VALID(port)) {
ip_lock(port);
- if ( ip_active(port) &&
- (ip_kotype(port) == IKOT_TASK ||
- ip_kotype(port) == IKOT_TASK_NAME)) {
+ if (ip_active(port) &&
+ (ip_kotype(port) == IKOT_TASK ||
+ ip_kotype(port) == IKOT_TASK_NAME)) {
task = (task_name_t)port->ip_kobject;
assert(task != TASK_NAME_NULL);
ip_unlock(port);
}
- return (task);
+ return task;
+}
+
+static task_inspect_t
+convert_port_to_task_inspect_locked(
+ ipc_port_t port)
+{
+ task_inspect_t task = TASK_INSPECT_NULL;
+
+ ip_lock_held(port);
+ require_ip_active(port);
+
+ if (ip_kotype(port) == IKOT_TASK) {
+ task = (task_inspect_t)port->ip_kobject;
+ assert(task != TASK_INSPECT_NULL);
+
+ task_reference_internal(task);
+ }
+
+ return task;
}
/*
*/
task_inspect_t
convert_port_to_task_inspect(
- ipc_port_t port)
+ ipc_port_t port)
{
task_inspect_t task = TASK_INSPECT_NULL;
if (IP_VALID(port)) {
ip_lock(port);
-
- if (ip_active(port) &&
- ip_kotype(port) == IKOT_TASK) {
- task = (task_inspect_t)port->ip_kobject;
- assert(task != TASK_INSPECT_NULL);
-
- task_reference_internal(task);
+ if (ip_active(port)) {
+ task = convert_port_to_task_inspect_locked(port);
}
-
ip_unlock(port);
}
- return (task);
+ return task;
}
/*
*/
task_suspension_token_t
convert_port_to_task_suspension_token(
- ipc_port_t port)
+ ipc_port_t port)
{
- task_suspension_token_t task = TASK_NULL;
+ task_suspension_token_t task = TASK_NULL;
if (IP_VALID(port)) {
ip_lock(port);
- if ( ip_active(port) &&
- ip_kotype(port) == IKOT_TASK_RESUME) {
+ if (ip_active(port) &&
+ ip_kotype(port) == IKOT_TASK_RESUME) {
task = (task_suspension_token_t)port->ip_kobject;
assert(task != TASK_NULL);
ip_unlock(port);
}
- return (task);
+ return task;
}
/*
*/
ipc_space_t
convert_port_to_space(
- ipc_port_t port)
+ ipc_port_t port)
{
ipc_space_t space;
task_t task;
task = convert_port_to_locked_task(port);
- if (task == TASK_NULL)
+ if (task == TASK_NULL) {
return IPC_SPACE_NULL;
+ }
if (!task->active) {
task_unlock(task);
return IPC_SPACE_NULL;
}
-
+
space = task->itk_space;
is_reference(space);
task_unlock(task);
- return (space);
+ return space;
}
/*
*/
ipc_space_inspect_t
convert_port_to_space_inspect(
- ipc_port_t port)
+ ipc_port_t port)
{
ipc_space_inspect_t space;
task_inspect_t task;
task = convert_port_to_locked_task_inspect(port);
- if (task == TASK_INSPECT_NULL)
+ if (task == TASK_INSPECT_NULL) {
return IPC_SPACE_INSPECT_NULL;
+ }
if (!task->active) {
task_unlock(task);
vm_map_t
convert_port_to_map(
- ipc_port_t port)
+ ipc_port_t port)
{
task_t task;
vm_map_t map;
task = convert_port_to_locked_task(port);
-
- if (task == TASK_NULL)
+
+ if (task == TASK_NULL) {
return VM_MAP_NULL;
+ }
if (!task->active) {
task_unlock(task);
return VM_MAP_NULL;
}
-
+
map = task->map;
vm_map_reference_swap(map);
task_unlock(task);
* Nothing locked.
*/
-thread_t
-convert_port_to_thread(
- ipc_port_t port)
+static thread_t
+convert_port_to_thread_locked(
+ ipc_port_t port,
+ port_to_thread_options_t options)
{
- thread_t thread = THREAD_NULL;
+ thread_t thread = THREAD_NULL;
- if (IP_VALID(port)) {
- ip_lock(port);
+ ip_lock_held(port);
+ require_ip_active(port);
- if (ip_active(port) &&
- ip_kotype(port) == IKOT_THREAD) {
- thread = (thread_t)port->ip_kobject;
- assert(thread != THREAD_NULL);
+ if (ip_kotype(port) == IKOT_THREAD) {
+ thread = (thread_t)port->ip_kobject;
+ assert(thread != THREAD_NULL);
+ if (options & PORT_TO_THREAD_NOT_CURRENT_THREAD) {
+ if (thread == current_thread()) {
+ return THREAD_NULL;
+ }
+ }
+
+ if (options & PORT_TO_THREAD_IN_CURRENT_TASK) {
+ if (thread->task != current_task()) {
+ return THREAD_NULL;
+ }
+ } else {
/* Use task conversion rules for thread control conversions */
if (task_conversion_eval(current_task(), thread->task) != KERN_SUCCESS) {
- ip_unlock(port);
return THREAD_NULL;
}
-
- thread_reference_internal(thread);
}
+ thread_reference_internal(thread);
+ }
+
+ return thread;
+}
+
+thread_t
+convert_port_to_thread(
+ ipc_port_t port)
+{
+ thread_t thread = THREAD_NULL;
+
+ if (IP_VALID(port)) {
+ ip_lock(port);
+ if (ip_active(port)) {
+ thread = convert_port_to_thread_locked(port, PORT_TO_THREAD_NONE);
+ }
ip_unlock(port);
}
- return (thread);
+ return thread;
}
/*
*/
thread_inspect_t
convert_port_to_thread_inspect(
- ipc_port_t port)
+ ipc_port_t port)
{
thread_inspect_t thread = THREAD_INSPECT_NULL;
* A name of MACH_PORT_NULL is valid for the null thread.
* Conditions:
* Nothing locked.
- *
- * TODO: Could this be faster if it were ipc_port_translate_send based, like thread_switch?
- * We could avoid extra lock/unlock and extra ref operations on the port.
*/
thread_t
port_name_to_thread(
- mach_port_name_t name)
+ mach_port_name_t name,
+ port_to_thread_options_t options)
{
- thread_t thread = THREAD_NULL;
- ipc_port_t kport;
+ thread_t thread = THREAD_NULL;
+ ipc_port_t kport;
+ kern_return_t kr;
if (MACH_PORT_VALID(name)) {
- if (ipc_object_copyin(current_space(), name,
- MACH_MSG_TYPE_COPY_SEND,
- (ipc_object_t *)&kport) != KERN_SUCCESS)
- return (THREAD_NULL);
-
- thread = convert_port_to_thread(kport);
-
- if (IP_VALID(kport))
- ipc_port_release_send(kport);
+ kr = ipc_port_translate_send(current_space(), name, &kport);
+ if (kr == KERN_SUCCESS) {
+ thread = convert_port_to_thread_locked(kport, options);
+ ip_unlock(kport);
+ }
}
- return (thread);
+ return thread;
}
task_t
port_name_to_task(
mach_port_name_t name)
{
- ipc_port_t kern_port;
+ ipc_port_t kport;
kern_return_t kr;
task_t task = TASK_NULL;
if (MACH_PORT_VALID(name)) {
- kr = ipc_object_copyin(current_space(), name,
- MACH_MSG_TYPE_COPY_SEND,
- (ipc_object_t *) &kern_port);
- if (kr != KERN_SUCCESS)
- return TASK_NULL;
-
- task = convert_port_to_task(kern_port);
-
- if (IP_VALID(kern_port))
- ipc_port_release_send(kern_port);
+ kr = ipc_port_translate_send(current_space(), name, &kport);
+ if (kr == KERN_SUCCESS) {
+ task = convert_port_to_task_locked(kport, NULL);
+ ip_unlock(kport);
+ }
}
return task;
}
port_name_to_task_inspect(
mach_port_name_t name)
{
- ipc_port_t kern_port;
+ ipc_port_t kport;
kern_return_t kr;
task_inspect_t ti = TASK_INSPECT_NULL;
if (MACH_PORT_VALID(name)) {
- kr = ipc_object_copyin(current_space(), name,
- MACH_MSG_TYPE_COPY_SEND,
- (ipc_object_t *)&kern_port);
- if (kr != KERN_SUCCESS)
- return TASK_NULL;
-
- ti = convert_port_to_task_inspect(kern_port);
-
- if (IP_VALID(kern_port))
- ipc_port_release_send(kern_port);
+ kr = ipc_port_translate_send(current_space(), name, &kport);
+ if (kr == KERN_SUCCESS) {
+ ti = convert_port_to_task_inspect_locked(kport);
+ ip_unlock(kport);
+ }
}
return ti;
}
port_name_to_host(
mach_port_name_t name)
{
-
host_t host = HOST_NULL;
kern_return_t kr;
ipc_port_t port;
* Purpose:
* Convert from a task to a port.
* Consumes a task ref; produces a naked send right
- * which may be invalid.
+ * which may be invalid.
* Conditions:
* Nothing locked.
*/
ipc_port_t
convert_task_to_port(
- task_t task)
+ task_t task)
{
ipc_port_t port;
itk_lock(task);
- if (task->itk_self != IP_NULL)
+ if (task->itk_self != IP_NULL) {
port = ipc_port_make_send(task->itk_self);
- else
+ } else {
port = IP_NULL;
+ }
itk_unlock(task);
*/
ipc_port_t
convert_task_inspect_to_port(
- task_inspect_t task)
+ task_inspect_t task)
{
task_deallocate(task);
* Purpose:
* Convert from a task suspension token to a port.
* Consumes a task suspension token ref; produces a naked send-once right
- * which may be invalid.
+ * which may be invalid.
* Conditions:
* Nothing locked.
*/
ipc_port_t
convert_task_suspension_token_to_port(
- task_suspension_token_t task)
+ task_suspension_token_t task)
{
ipc_port_t port;
task_lock(task);
if (task->active) {
if (task->itk_resume == IP_NULL) {
- task->itk_resume = ipc_port_alloc_kernel();
- if (!IP_VALID(task->itk_resume)) {
- panic("failed to create resume port");
- }
-
- ipc_kobject_set(task->itk_resume, (ipc_kobject_t) task, IKOT_TASK_RESUME);
+ task->itk_resume = ipc_kobject_alloc_port((ipc_kobject_t) task,
+ IKOT_TASK_RESUME, IPC_KOBJECT_ALLOC_NONE);
}
/*
* Purpose:
* Convert from a task name ref to a port.
* Consumes a task name ref; produces a naked send right
- * which may be invalid.
+ * which may be invalid.
* Conditions:
* Nothing locked.
*/
ipc_port_t
convert_task_name_to_port(
- task_name_t task_name)
+ task_name_t task_name)
{
ipc_port_t port;
itk_lock(task_name);
- if (task_name->itk_nself != IP_NULL)
+ if (task_name->itk_nself != IP_NULL) {
port = ipc_port_make_send(task_name->itk_nself);
- else
+ } else {
port = IP_NULL;
+ }
itk_unlock(task_name);
task_name_deallocate(task_name);
ipc_port_t
convert_thread_to_port(
- thread_t thread)
+ thread_t thread)
{
- ipc_port_t port;
+ ipc_port_t port;
thread_mtx_lock(thread);
- if (thread->ith_self != IP_NULL)
+ if (thread->ith_self != IP_NULL) {
port = ipc_port_make_send(thread->ith_self);
- else
+ } else {
port = IP_NULL;
+ }
thread_mtx_unlock(thread);
thread_deallocate(thread);
- return (port);
+ return port;
}
/*
void
space_deallocate(
- ipc_space_t space)
+ ipc_space_t space)
{
- if (space != IS_NULL)
+ if (space != IS_NULL) {
is_release(space);
+ }
}
/*
void
space_inspect_deallocate(
- ipc_space_inspect_t space)
+ ipc_space_inspect_t space)
{
- if (space != IS_INSPECT_NULL)
+ if (space != IS_INSPECT_NULL) {
is_release((ipc_space_t)space);
+ }
}
/*
kern_return_t
thread_set_exception_ports(
- thread_t thread,
- exception_mask_t exception_mask,
- ipc_port_t new_port,
- exception_behavior_t new_behavior,
- thread_state_flavor_t new_flavor)
+ thread_t thread,
+ exception_mask_t exception_mask,
+ ipc_port_t new_port,
+ exception_behavior_t new_behavior,
+ thread_state_flavor_t new_flavor)
{
- ipc_port_t old_port[EXC_TYPES_COUNT];
+ ipc_port_t old_port[EXC_TYPES_COUNT];
boolean_t privileged = current_task()->sec_token.val[0] == 0;
- register int i;
+ register int i;
#if CONFIG_MACF
struct label *new_label;
#endif
-
- if (thread == THREAD_NULL)
- return (KERN_INVALID_ARGUMENT);
- if (exception_mask & ~EXC_MASK_VALID)
- return (KERN_INVALID_ARGUMENT);
+ if (thread == THREAD_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (IP_VALID(new_port)) {
- switch (new_behavior & ~MACH_EXCEPTION_CODES) {
+ if (exception_mask & ~EXC_MASK_VALID) {
+ return KERN_INVALID_ARGUMENT;
+ }
+ if (IP_VALID(new_port)) {
+ switch (new_behavior & ~MACH_EXCEPTION_MASK) {
case EXCEPTION_DEFAULT:
case EXCEPTION_STATE:
case EXCEPTION_STATE_IDENTITY:
break;
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
}
- /*
+ /*
* Check the validity of the thread_state_flavor by calling the
* VALID_THREAD_STATE_FLAVOR architecture dependent macro defined in
* osfmk/mach/ARCHITECTURE/thread_status.h
*/
- if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor))
- return (KERN_INVALID_ARGUMENT);
+ if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor)) {
+ return KERN_INVALID_ARGUMENT;
+ }
#if CONFIG_MACF
new_label = mac_exc_create_label_for_current_proc();
#endif
-
+
thread_mtx_lock(thread);
if (!thread->active) {
thread_mtx_unlock(thread);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
if (thread->exc_actions == NULL) {
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; ++i) {
if ((exception_mask & (1 << i))
#if CONFIG_MACF
- && mac_exc_update_action_label(&thread->exc_actions[i], new_label) == 0
+ && mac_exc_update_action_label(&thread->exc_actions[i], new_label) == 0
#endif
- ) {
+ ) {
old_port[i] = thread->exc_actions[i].port;
thread->exc_actions[i].port = ipc_port_copy_send(new_port);
thread->exc_actions[i].behavior = new_behavior;
thread->exc_actions[i].flavor = new_flavor;
thread->exc_actions[i].privileged = privileged;
- }
- else
+ } else {
old_port[i] = IP_NULL;
+ }
}
thread_mtx_unlock(thread);
#if CONFIG_MACF
mac_exc_free_label(new_label);
#endif
-
- for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; ++i)
- if (IP_VALID(old_port[i]))
+
+ for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; ++i) {
+ if (IP_VALID(old_port[i])) {
ipc_port_release_send(old_port[i]);
+ }
+ }
- if (IP_VALID(new_port)) /* consume send right */
+ if (IP_VALID(new_port)) { /* consume send right */
ipc_port_release_send(new_port);
+ }
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
kern_return_t
task_set_exception_ports(
- task_t task,
- exception_mask_t exception_mask,
- ipc_port_t new_port,
- exception_behavior_t new_behavior,
- thread_state_flavor_t new_flavor)
+ task_t task,
+ exception_mask_t exception_mask,
+ ipc_port_t new_port,
+ exception_behavior_t new_behavior,
+ thread_state_flavor_t new_flavor)
{
- ipc_port_t old_port[EXC_TYPES_COUNT];
+ ipc_port_t old_port[EXC_TYPES_COUNT];
boolean_t privileged = current_task()->sec_token.val[0] == 0;
- register int i;
+ register int i;
#if CONFIG_MACF
struct label *new_label;
-#endif
+#endif
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (exception_mask & ~EXC_MASK_VALID)
- return (KERN_INVALID_ARGUMENT);
+ if (exception_mask & ~EXC_MASK_VALID) {
+ return KERN_INVALID_ARGUMENT;
+ }
if (IP_VALID(new_port)) {
- switch (new_behavior & ~MACH_EXCEPTION_CODES) {
-
+ switch (new_behavior & ~MACH_EXCEPTION_MASK) {
case EXCEPTION_DEFAULT:
case EXCEPTION_STATE:
case EXCEPTION_STATE_IDENTITY:
break;
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
}
* VALID_THREAD_STATE_FLAVOR architecture dependent macro defined in
* osfmk/mach/ARCHITECTURE/thread_status.h
*/
- if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor))
- return (KERN_INVALID_ARGUMENT);
+ if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor)) {
+ return KERN_INVALID_ARGUMENT;
+ }
#if CONFIG_MACF
new_label = mac_exc_create_label_for_current_proc();
#endif
-
+
itk_lock(task);
if (task->itk_self == IP_NULL) {
itk_unlock(task);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; ++i) {
if ((exception_mask & (1 << i))
#if CONFIG_MACF
- && mac_exc_update_action_label(&task->exc_actions[i], new_label) == 0
+ && mac_exc_update_action_label(&task->exc_actions[i], new_label) == 0
#endif
- ) {
+ ) {
old_port[i] = task->exc_actions[i].port;
task->exc_actions[i].port =
- ipc_port_copy_send(new_port);
+ ipc_port_copy_send(new_port);
task->exc_actions[i].behavior = new_behavior;
task->exc_actions[i].flavor = new_flavor;
task->exc_actions[i].privileged = privileged;
- }
- else
+ } else {
old_port[i] = IP_NULL;
+ }
}
itk_unlock(task);
#if CONFIG_MACF
mac_exc_free_label(new_label);
#endif
-
- for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; ++i)
- if (IP_VALID(old_port[i]))
+
+ for (i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT; ++i) {
+ if (IP_VALID(old_port[i])) {
ipc_port_release_send(old_port[i]);
+ }
+ }
- if (IP_VALID(new_port)) /* consume send right */
+ if (IP_VALID(new_port)) { /* consume send right */
ipc_port_release_send(new_port);
+ }
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
kern_return_t
thread_swap_exception_ports(
- thread_t thread,
- exception_mask_t exception_mask,
- ipc_port_t new_port,
- exception_behavior_t new_behavior,
- thread_state_flavor_t new_flavor,
- exception_mask_array_t masks,
- mach_msg_type_number_t *CountCnt,
- exception_port_array_t ports,
- exception_behavior_array_t behaviors,
- thread_state_flavor_array_t flavors)
+ thread_t thread,
+ exception_mask_t exception_mask,
+ ipc_port_t new_port,
+ exception_behavior_t new_behavior,
+ thread_state_flavor_t new_flavor,
+ exception_mask_array_t masks,
+ mach_msg_type_number_t *CountCnt,
+ exception_port_array_t ports,
+ exception_behavior_array_t behaviors,
+ thread_state_flavor_array_t flavors)
{
- ipc_port_t old_port[EXC_TYPES_COUNT];
+ ipc_port_t old_port[EXC_TYPES_COUNT];
boolean_t privileged = current_task()->sec_token.val[0] == 0;
- unsigned int i, j, count;
+ unsigned int i, j, count;
#if CONFIG_MACF
struct label *new_label;
#endif
- if (thread == THREAD_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (thread == THREAD_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (exception_mask & ~EXC_MASK_VALID)
- return (KERN_INVALID_ARGUMENT);
+ if (exception_mask & ~EXC_MASK_VALID) {
+ return KERN_INVALID_ARGUMENT;
+ }
if (IP_VALID(new_port)) {
- switch (new_behavior & ~MACH_EXCEPTION_CODES) {
-
+ switch (new_behavior & ~MACH_EXCEPTION_MASK) {
case EXCEPTION_DEFAULT:
case EXCEPTION_STATE:
case EXCEPTION_STATE_IDENTITY:
break;
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
}
- if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor))
- return (KERN_INVALID_ARGUMENT);
+ if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor)) {
+ return KERN_INVALID_ARGUMENT;
+ }
#if CONFIG_MACF
new_label = mac_exc_create_label_for_current_proc();
if (!thread->active) {
thread_mtx_unlock(thread);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
if (thread->exc_actions == NULL) {
for (count = 0, i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT && count < *CountCnt; ++i) {
if ((exception_mask & (1 << i))
#if CONFIG_MACF
- && mac_exc_update_action_label(&thread->exc_actions[i], new_label) == 0
+ && mac_exc_update_action_label(&thread->exc_actions[i], new_label) == 0
#endif
- ) {
+ ) {
for (j = 0; j < count; ++j) {
/*
* search for an identical entry, if found
* set corresponding mask for this exception.
*/
- if ( thread->exc_actions[i].port == ports[j] &&
- thread->exc_actions[i].behavior == behaviors[j] &&
- thread->exc_actions[i].flavor == flavors[j] ) {
+ if (thread->exc_actions[i].port == ports[j] &&
+ thread->exc_actions[i].behavior == behaviors[j] &&
+ thread->exc_actions[i].flavor == flavors[j]) {
masks[j] |= (1 << i);
break;
}
thread->exc_actions[i].behavior = new_behavior;
thread->exc_actions[i].flavor = new_flavor;
thread->exc_actions[i].privileged = privileged;
- }
- else
+ } else {
old_port[i] = IP_NULL;
+ }
}
thread_mtx_unlock(thread);
#if CONFIG_MACF
mac_exc_free_label(new_label);
#endif
-
+
while (--i >= FIRST_EXCEPTION) {
- if (IP_VALID(old_port[i]))
+ if (IP_VALID(old_port[i])) {
ipc_port_release_send(old_port[i]);
+ }
}
- if (IP_VALID(new_port)) /* consume send right */
+ if (IP_VALID(new_port)) { /* consume send right */
ipc_port_release_send(new_port);
+ }
*CountCnt = count;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
kern_return_t
task_swap_exception_ports(
- task_t task,
- exception_mask_t exception_mask,
- ipc_port_t new_port,
- exception_behavior_t new_behavior,
- thread_state_flavor_t new_flavor,
- exception_mask_array_t masks,
- mach_msg_type_number_t *CountCnt,
- exception_port_array_t ports,
- exception_behavior_array_t behaviors,
- thread_state_flavor_array_t flavors)
+ task_t task,
+ exception_mask_t exception_mask,
+ ipc_port_t new_port,
+ exception_behavior_t new_behavior,
+ thread_state_flavor_t new_flavor,
+ exception_mask_array_t masks,
+ mach_msg_type_number_t *CountCnt,
+ exception_port_array_t ports,
+ exception_behavior_array_t behaviors,
+ thread_state_flavor_array_t flavors)
{
- ipc_port_t old_port[EXC_TYPES_COUNT];
+ ipc_port_t old_port[EXC_TYPES_COUNT];
boolean_t privileged = current_task()->sec_token.val[0] == 0;
- unsigned int i, j, count;
+ unsigned int i, j, count;
#if CONFIG_MACF
struct label *new_label;
-#endif
-
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+#endif
- if (exception_mask & ~EXC_MASK_VALID)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (IP_VALID(new_port)) {
- switch (new_behavior & ~MACH_EXCEPTION_CODES) {
+ if (exception_mask & ~EXC_MASK_VALID) {
+ return KERN_INVALID_ARGUMENT;
+ }
+ if (IP_VALID(new_port)) {
+ switch (new_behavior & ~MACH_EXCEPTION_MASK) {
case EXCEPTION_DEFAULT:
case EXCEPTION_STATE:
case EXCEPTION_STATE_IDENTITY:
break;
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
}
- if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor))
- return (KERN_INVALID_ARGUMENT);
+ if (new_flavor != 0 && !VALID_THREAD_STATE_FLAVOR(new_flavor)) {
+ return KERN_INVALID_ARGUMENT;
+ }
#if CONFIG_MACF
new_label = mac_exc_create_label_for_current_proc();
#endif
-
+
itk_lock(task);
if (task->itk_self == IP_NULL) {
itk_unlock(task);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
assert(EXC_TYPES_COUNT > FIRST_EXCEPTION);
for (count = 0, i = FIRST_EXCEPTION; i < EXC_TYPES_COUNT && count < *CountCnt; ++i) {
if ((exception_mask & (1 << i))
#if CONFIG_MACF
- && mac_exc_update_action_label(&task->exc_actions[i], new_label) == 0
+ && mac_exc_update_action_label(&task->exc_actions[i], new_label) == 0
#endif
- ) {
+ ) {
for (j = 0; j < count; j++) {
/*
* search for an identical entry, if found
* set corresponding mask for this exception.
*/
- if ( task->exc_actions[i].port == ports[j] &&
- task->exc_actions[i].behavior == behaviors[j] &&
- task->exc_actions[i].flavor == flavors[j] ) {
+ if (task->exc_actions[i].port == ports[j] &&
+ task->exc_actions[i].behavior == behaviors[j] &&
+ task->exc_actions[i].flavor == flavors[j]) {
masks[j] |= (1 << i);
break;
}
old_port[i] = task->exc_actions[i].port;
- task->exc_actions[i].port = ipc_port_copy_send(new_port);
+ task->exc_actions[i].port = ipc_port_copy_send(new_port);
task->exc_actions[i].behavior = new_behavior;
task->exc_actions[i].flavor = new_flavor;
task->exc_actions[i].privileged = privileged;
- }
- else
+ } else {
old_port[i] = IP_NULL;
+ }
}
itk_unlock(task);
#if CONFIG_MACF
mac_exc_free_label(new_label);
#endif
-
+
while (--i >= FIRST_EXCEPTION) {
- if (IP_VALID(old_port[i]))
+ if (IP_VALID(old_port[i])) {
ipc_port_release_send(old_port[i]);
+ }
}
- if (IP_VALID(new_port)) /* consume send right */
+ if (IP_VALID(new_port)) { /* consume send right */
ipc_port_release_send(new_port);
+ }
*CountCnt = count;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
kern_return_t
thread_get_exception_ports(
- thread_t thread,
- exception_mask_t exception_mask,
- exception_mask_array_t masks,
- mach_msg_type_number_t *CountCnt,
- exception_port_array_t ports,
- exception_behavior_array_t behaviors,
- thread_state_flavor_array_t flavors)
+ thread_t thread,
+ exception_mask_t exception_mask,
+ exception_mask_array_t masks,
+ mach_msg_type_number_t *CountCnt,
+ exception_port_array_t ports,
+ exception_behavior_array_t behaviors,
+ thread_state_flavor_array_t flavors)
{
- unsigned int i, j, count;
+ unsigned int i, j, count;
- if (thread == THREAD_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (thread == THREAD_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (exception_mask & ~EXC_MASK_VALID)
- return (KERN_INVALID_ARGUMENT);
+ if (exception_mask & ~EXC_MASK_VALID) {
+ return KERN_INVALID_ARGUMENT;
+ }
thread_mtx_lock(thread);
if (!thread->active) {
thread_mtx_unlock(thread);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
count = 0;
* search for an identical entry, if found
* set corresponding mask for this exception.
*/
- if ( thread->exc_actions[i].port == ports[j] &&
- thread->exc_actions[i].behavior ==behaviors[j] &&
- thread->exc_actions[i].flavor == flavors[j] ) {
+ if (thread->exc_actions[i].port == ports[j] &&
+ thread->exc_actions[i].behavior == behaviors[j] &&
+ thread->exc_actions[i].flavor == flavors[j]) {
masks[j] |= (1 << i);
break;
}
behaviors[j] = thread->exc_actions[i].behavior;
flavors[j] = thread->exc_actions[i].flavor;
++count;
- if (count >= *CountCnt)
+ if (count >= *CountCnt) {
break;
+ }
}
}
}
*CountCnt = count;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
kern_return_t
task_get_exception_ports(
- task_t task,
- exception_mask_t exception_mask,
- exception_mask_array_t masks,
- mach_msg_type_number_t *CountCnt,
- exception_port_array_t ports,
- exception_behavior_array_t behaviors,
- thread_state_flavor_array_t flavors)
+ task_t task,
+ exception_mask_t exception_mask,
+ exception_mask_array_t masks,
+ mach_msg_type_number_t *CountCnt,
+ exception_port_array_t ports,
+ exception_behavior_array_t behaviors,
+ thread_state_flavor_array_t flavors)
{
- unsigned int i, j, count;
+ unsigned int i, j, count;
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (exception_mask & ~EXC_MASK_VALID)
- return (KERN_INVALID_ARGUMENT);
+ if (exception_mask & ~EXC_MASK_VALID) {
+ return KERN_INVALID_ARGUMENT;
+ }
itk_lock(task);
if (task->itk_self == IP_NULL) {
itk_unlock(task);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
count = 0;
* search for an identical entry, if found
* set corresponding mask for this exception.
*/
- if ( task->exc_actions[i].port == ports[j] &&
- task->exc_actions[i].behavior == behaviors[j] &&
- task->exc_actions[i].flavor == flavors[j] ) {
+ if (task->exc_actions[i].port == ports[j] &&
+ task->exc_actions[i].behavior == behaviors[j] &&
+ task->exc_actions[i].flavor == flavors[j]) {
masks[j] |= (1 << i);
break;
}
behaviors[j] = task->exc_actions[i].behavior;
flavors[j] = task->exc_actions[i].flavor;
++count;
- if (count > *CountCnt)
+ if (count > *CountCnt) {
break;
+ }
}
}
}
*CountCnt = count;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
projects / apple / xnu.git / blobdiff