/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 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
- * 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
* 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@
#include <mach/message.h>
#include <mach/port.h>
#include <mach/mig_errors.h>
+#include <mach/task.h>
#include <mach/thread_status.h>
#include <mach/exception_types.h>
+#include <mach/exc.h>
+#include <mach/mach_exc.h>
#include <ipc/port.h>
#include <ipc/ipc_entry.h>
#include <ipc/ipc_object.h>
#include <ipc/ipc_space.h>
#include <ipc/ipc_pset.h>
#include <ipc/ipc_machdep.h>
-#include <kern/etap_macros.h>
#include <kern/counters.h>
#include <kern/ipc_tt.h>
#include <kern/task.h>
#include <kern/thread.h>
-#include <kern/thread_swap.h>
#include <kern/processor.h>
#include <kern/sched.h>
#include <kern/sched_prim.h>
#include <kern/host.h>
#include <kern/misc_protos.h>
#include <string.h>
-#include <mach/exc.h>
#if MACH_KDB
#include <ddb/db_trap.h>
unsigned long c_tsk_exc_raise_state = 0;
unsigned long c_tsk_exc_raise_state_id = 0;
+/* forward declarations */
+kern_return_t exception_deliver(
+ thread_t thread,
+ exception_type_t exception,
+ mach_exception_data_t code,
+ mach_msg_type_number_t codeCnt,
+ struct exception_action *excp,
+ lck_mtx_t *mutex);
+
+#ifdef MACH_BSD
+kern_return_t bsd_exception(
+ exception_type_t exception,
+ mach_exception_data_t code,
+ mach_msg_type_number_t codeCnt);
+#endif /* MACH_BSD */
/*
* Routine: exception_deliver
* thread_exception_return and thread_kdb_return
* are possible.
* Returns:
- * If the exception was not handled by this handler
+ * KERN_SUCCESS if the exception was handled
*/
-void
+kern_return_t
exception_deliver(
+ thread_t thread,
exception_type_t exception,
- exception_data_t code,
+ mach_exception_data_t code,
mach_msg_type_number_t codeCnt,
struct exception_action *excp,
- mutex_t *mutex)
+ lck_mtx_t *mutex)
{
- thread_act_t a_self = current_act();
ipc_port_t exc_port;
+ exception_data_type_t small_code[EXCEPTION_CODE_MAX];
+ int code64;
int behavior;
int flavor;
kern_return_t kr;
* Save work if we are terminating.
* Just go back to our AST handler.
*/
- if (!a_self->active)
- thread_exception_return();
+ if (!thread->active)
+ return KERN_SUCCESS;
/*
* Snapshot the exception action data under lock for consistency.
* the port from disappearing between now and when
* ipc_object_copyin_from_kernel is finally called.
*/
- mutex_lock(mutex);
+ lck_mtx_lock(mutex);
exc_port = excp->port;
if (!IP_VALID(exc_port)) {
- mutex_unlock(mutex);
- return;
+ lck_mtx_unlock(mutex);
+ return KERN_FAILURE;
}
ip_lock(exc_port);
if (!ip_active(exc_port)) {
ip_unlock(exc_port);
- mutex_unlock(mutex);
- return;
+ lck_mtx_unlock(mutex);
+ return KERN_FAILURE;
}
ip_reference(exc_port);
exc_port->ip_srights++;
flavor = excp->flavor;
behavior = excp->behavior;
- mutex_unlock(mutex);
+ lck_mtx_unlock(mutex);
+
+ code64 = (behavior & MACH_EXCEPTION_CODES);
+ behavior &= ~MACH_EXCEPTION_CODES;
+
+ if (!code64) {
+ small_code[0] = CAST_DOWN_EXPLICIT(exception_data_type_t, code[0]);
+ small_code[1] = CAST_DOWN_EXPLICIT(exception_data_type_t, code[1]);
+ }
+
switch (behavior) {
case EXCEPTION_STATE: {
thread_state_data_t state;
c_thr_exc_raise_state++;
- state_cnt = state_count[flavor];
- kr = thread_getstatus(a_self, flavor,
+ state_cnt = _MachineStateCount[flavor];
+ kr = thread_getstatus(thread, flavor,
(thread_state_t)state,
&state_cnt);
if (kr == KERN_SUCCESS) {
- kr = exception_raise_state(exc_port, exception,
- code, codeCnt,
- &flavor,
- state, state_cnt,
- state, &state_cnt);
+ if (code64) {
+ kr = mach_exception_raise_state(exc_port,
+ exception,
+ code,
+ codeCnt,
+ &flavor,
+ state, state_cnt,
+ state, &state_cnt);
+ } else {
+ kr = exception_raise_state(exc_port, exception,
+ small_code,
+ codeCnt,
+ &flavor,
+ state, state_cnt,
+ state, &state_cnt);
+ }
if (kr == MACH_MSG_SUCCESS)
- kr = thread_setstatus(a_self, flavor,
- (thread_state_t)state,
- state_cnt);
+ kr = thread_setstatus(thread, flavor,
+ (thread_state_t)state,
+ state_cnt);
}
- if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
- thread_exception_return();
- /*NOTREACHED*/
- return;
+ return kr;
}
case EXCEPTION_DEFAULT:
c_thr_exc_raise++;
- kr = exception_raise(exc_port,
- retrieve_act_self_fast(a_self),
- retrieve_task_self_fast(a_self->task),
- exception,
- code, codeCnt);
+ if (code64) {
+ kr = mach_exception_raise(exc_port,
+ retrieve_thread_self_fast(thread),
+ retrieve_task_self_fast(thread->task),
+ exception,
+ code,
+ codeCnt);
+ } else {
+ kr = exception_raise(exc_port,
+ retrieve_thread_self_fast(thread),
+ retrieve_task_self_fast(thread->task),
+ exception,
+ small_code,
+ codeCnt);
+ }
- if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
- thread_exception_return();
- /*NOTREACHED*/
- return;
+ return kr;
case EXCEPTION_STATE_IDENTITY: {
mach_msg_type_number_t state_cnt;
thread_state_data_t state;
c_thr_exc_raise_state_id++;
- state_cnt = state_count[flavor];
- kr = thread_getstatus(a_self, flavor,
+ state_cnt = _MachineStateCount[flavor];
+ kr = thread_getstatus(thread, flavor,
(thread_state_t)state,
&state_cnt);
if (kr == KERN_SUCCESS) {
- kr = exception_raise_state_identity(exc_port,
- retrieve_act_self_fast(a_self),
- retrieve_task_self_fast(a_self->task),
- exception,
- code, codeCnt,
- &flavor,
- state, state_cnt,
- state, &state_cnt);
- if (kr == MACH_MSG_SUCCESS)
- kr = thread_setstatus(a_self, flavor,
- (thread_state_t)state,
- state_cnt);
+ if (code64) {
+ kr = mach_exception_raise_state_identity(
+ exc_port,
+ retrieve_thread_self_fast(thread),
+ retrieve_task_self_fast(thread->task),
+ exception,
+ code,
+ codeCnt,
+ &flavor,
+ state, state_cnt,
+ state, &state_cnt);
+ } else {
+ kr = exception_raise_state_identity(exc_port,
+ retrieve_thread_self_fast(thread),
+ retrieve_task_self_fast(thread->task),
+ exception,
+ small_code,
+ codeCnt,
+ &flavor,
+ state, state_cnt,
+ state, &state_cnt);
+ }
+ if (kr == MACH_MSG_SUCCESS)
+ kr = thread_setstatus(thread, flavor,
+ (thread_state_t)state,
+ state_cnt);
}
- if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
- thread_exception_return();
- /*NOTREACHED*/
- return;
+ return kr;
}
-
+
default:
- panic ("bad exception behavior!");
+ panic ("bad exception behavior!");
+ return KERN_FAILURE;
}/* switch */
}
* Doesn't return.
*/
void
-exception(
+exception_triage(
exception_type_t exception,
- exception_data_t code,
+ mach_exception_data_t code,
mach_msg_type_number_t codeCnt)
{
- thread_act_t thr_act;
+ thread_t thread;
task_t task;
host_priv_t host_priv;
struct exception_action *excp;
- mutex_t *mutex;
+ lck_mtx_t *mutex;
+ kern_return_t kr;
assert(exception != EXC_RPC_ALERT);
/*
* Try to raise the exception at the activation level.
*/
- thr_act = current_act();
- mutex = mutex_addr(thr_act->lock);
- excp = &thr_act->exc_actions[exception];
- exception_deliver(exception, code, codeCnt, excp, mutex);
+ thread = current_thread();
+ mutex = &thread->mutex;
+ excp = &thread->exc_actions[exception];
+ kr = exception_deliver(thread, exception, code, codeCnt, excp, mutex);
+ if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
+ goto out;
/*
* Maybe the task level will handle it.
*/
task = current_task();
- mutex = mutex_addr(task->lock);
+ mutex = &task->lock;
excp = &task->exc_actions[exception];
- exception_deliver(exception, code, codeCnt, excp, mutex);
+ kr = exception_deliver(thread, exception, code, codeCnt, excp, mutex);
+ if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
+ goto out;
/*
* How about at the host level?
*/
host_priv = host_priv_self();
- mutex = mutex_addr(host_priv->lock);
+ mutex = &host_priv->lock;
excp = &host_priv->exc_actions[exception];
- exception_deliver(exception, code, codeCnt, excp, mutex);
+ kr = exception_deliver(thread, exception, code, codeCnt, excp, mutex);
+ if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
+ goto out;
/*
* Nobody handled it, terminate the task.
#endif /* MACH_KDB */
(void) task_terminate(task);
- thread_exception_return();
- /*NOTREACHED*/
+
+out:
+ if (exception != EXC_CRASH)
+ thread_exception_return();
+ return;
}
kern_return_t
bsd_exception(
exception_type_t exception,
- exception_data_t code,
+ mach_exception_data_t code,
mach_msg_type_number_t codeCnt)
{
task_t task;
- host_priv_t host_priv;
struct exception_action *excp;
- mutex_t *mutex;
- thread_act_t a_self = current_act();
- ipc_port_t exc_port;
- int behavior;
- int flavor;
+ lck_mtx_t *mutex;
+ thread_t self = current_thread();
kern_return_t kr;
/*
* Maybe the task level will handle it.
*/
task = current_task();
- mutex = mutex_addr(task->lock);
+ mutex = &task->lock;
excp = &task->exc_actions[exception];
- /*
- * Save work if we are terminating.
- * Just go back to our AST handler.
- */
- if (!a_self->active) {
- return(KERN_FAILURE);
- }
+ kr = exception_deliver(self, exception, code, codeCnt, excp, mutex);
- /*
- * Snapshot the exception action data under lock for consistency.
- * Hold a reference to the port over the exception_raise_* calls
- * so it can't be destroyed. This seems like overkill, but keeps
- * the port from disappearing between now and when
- * ipc_object_copyin_from_kernel is finally called.
- */
- mutex_lock(mutex);
- exc_port = excp->port;
- if (!IP_VALID(exc_port)) {
- mutex_unlock(mutex);
- return(KERN_FAILURE);
- }
- ip_lock(exc_port);
- if (!ip_active(exc_port)) {
- ip_unlock(exc_port);
- mutex_unlock(mutex);
- return(KERN_FAILURE);
- }
- ip_reference(exc_port);
- exc_port->ip_srights++;
- ip_unlock(exc_port);
-
- flavor = excp->flavor;
- behavior = excp->behavior;
- mutex_unlock(mutex);
-
- switch (behavior) {
- case EXCEPTION_STATE: {
- mach_msg_type_number_t state_cnt;
- thread_state_data_t state;
-
- c_thr_exc_raise_state++;
- state_cnt = state_count[flavor];
- kr = thread_getstatus(a_self, flavor,
- (thread_state_t)state,
- &state_cnt);
- if (kr == KERN_SUCCESS) {
- kr = exception_raise_state(exc_port, exception,
- code, codeCnt,
- &flavor,
- state, state_cnt,
- state, &state_cnt);
- if (kr == MACH_MSG_SUCCESS)
- kr = thread_setstatus(a_self, flavor,
- (thread_state_t)state,
- state_cnt);
- }
-
- if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
- return(KERN_SUCCESS);
-
- return(KERN_FAILURE);
- }
-
- case EXCEPTION_DEFAULT:
- c_thr_exc_raise++;
- kr = exception_raise(exc_port,
- retrieve_act_self_fast(a_self),
- retrieve_task_self_fast(a_self->task),
- exception,
- code, codeCnt);
+ if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
+ return(KERN_SUCCESS);
+ return(KERN_FAILURE);
+}
- if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
- return(KERN_SUCCESS);
- return(KERN_FAILURE);
- case EXCEPTION_STATE_IDENTITY: {
- mach_msg_type_number_t state_cnt;
- thread_state_data_t state;
+/*
+ * Raise an EXC_CRASH exception on the dying task.
+ * This should tell launchd to launch Crash Reporter for this task.
+ */
+kern_return_t abnormal_exit_notify(mach_exception_data_type_t exccode,
+ mach_exception_data_type_t excsubcode)
+{
+ mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
+ wait_interrupt_t wsave;
- c_thr_exc_raise_state_id++;
- state_cnt = state_count[flavor];
- kr = thread_getstatus(a_self, flavor,
- (thread_state_t)state,
- &state_cnt);
- if (kr == KERN_SUCCESS) {
- kr = exception_raise_state_identity(exc_port,
- retrieve_act_self_fast(a_self),
- retrieve_task_self_fast(a_self->task),
- exception,
- code, codeCnt,
- &flavor,
- state, state_cnt,
- state, &state_cnt);
- if (kr == MACH_MSG_SUCCESS)
- kr = thread_setstatus(a_self, flavor,
- (thread_state_t)state,
- state_cnt);
- }
+ code[0] = exccode;
+ code[1] = excsubcode;
- if (kr == KERN_SUCCESS || kr == MACH_RCV_PORT_DIED)
- return(KERN_SUCCESS);
- return(KERN_FAILURE);
- }
-
- default:
-
- return(KERN_FAILURE);
- }/* switch */
- return(KERN_FAILURE);
+ wsave = thread_interrupt_level(THREAD_UNINT);
+ exception_triage(EXC_CRASH, code, EXCEPTION_CODE_MAX);
+ (void) thread_interrupt_level(wsave);
+ return (KERN_SUCCESS);
}
-
-
/*
- * Handle interface for special perfomance monitoring
+ * Handle interface for special performance monitoring
* This is a special case of the host exception handler
*/
-
-kern_return_t sys_perf_notify(struct task *task,
- exception_data_t code,
- mach_msg_type_number_t codeCnt)
+kern_return_t sys_perf_notify(thread_t thread, int pid)
{
host_priv_t hostp;
struct exception_action *excp;
- thread_act_t act = current_act();
- thread_t thr = current_thread();
ipc_port_t xport;
- kern_return_t ret;
- int abrt;
- spl_t ints;
wait_interrupt_t wsave;
+ kern_return_t ret;
- hostp = host_priv_self(); /* Get the host privileged ports */
- excp = &hostp->exc_actions[EXC_RPC_ALERT]; /* Point to the RPC_ALERT action */
+ hostp = host_priv_self(); /* Get the host privileged ports */
+ mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
+ code[0] = 0xFF000001; /* Set terminate code */
+ code[1] = pid; /* Pass out the pid */
- mutex_lock(&hostp->lock); /* Lock the priv port */
- xport = excp->port; /* Get the port for this exception */
- if (!IP_VALID(xport)) { /* Is it valid? */
- mutex_unlock(&hostp->lock); /* Unlock */
- return(KERN_FAILURE); /* Go away... */
- }
+ struct task *task = thread->task;
+ excp = &hostp->exc_actions[EXC_RPC_ALERT];
+ xport = excp->port;
- ip_lock(xport); /* Lock the exception port */
- if (!ip_active(xport)) { /* and is it active? */
- ip_unlock(xport); /* Nope, fail */
- mutex_unlock(&hostp->lock); /* Unlock */
- return(KERN_FAILURE); /* Go away... */
- }
+ /* Make sure we're not catching our own exception */
+ if (!IP_VALID(xport) ||
+ !ip_active(xport) ||
+ task->itk_space == xport->data.receiver) {
- if (task->itk_space == xport->data.receiver) { /* Are we trying to send to ourselves? */
- ip_unlock(xport); /* Yes, fail */
- mutex_unlock(&hostp->lock); /* Unlock */
- return(KERN_FAILURE); /* Go away... */
+ return(KERN_FAILURE);
}
-
- ip_reference(xport); /* Bump reference so it doesn't go away */
- xport->ip_srights++; /* Bump send rights */
- ip_unlock(xport); /* We can unlock it now */
-
- mutex_unlock(&hostp->lock); /* All done with the lock */
-
- wsave = thread_interrupt_level(THREAD_UNINT); /* Make sure we aren't aborted here */
-
- ret = exception_raise(xport, /* Send the exception to the perf handler */
- retrieve_act_self_fast(act), /* Not always the dying guy */
- retrieve_task_self_fast(act->task), /* Not always the dying guy */
- EXC_RPC_ALERT, /* Unused exception type until now */
- code, codeCnt);
-
- (void)thread_interrupt_level(wsave); /* Restore interrupt level */
-
- return(ret); /* Tell caller how it went */
+
+ wsave = thread_interrupt_level(THREAD_UNINT);
+ ret = exception_deliver(
+ thread,
+ EXC_RPC_ALERT,
+ code,
+ 2,
+ excp,
+ &hostp->lock);
+ (void)thread_interrupt_level(wsave);
+
+ return(ret);
}
projects / apple / xnu.git / blobdiff