[launchd-changes] [23459] branches/SULeopard/launchd/src

source_changes at macosforge.org source_changes at macosforge.org
Fri Dec 7 13:15:45 PST 2007


Revision: 23459
          http://trac.macosforge.org/projects/launchd/changeset/23459
Author:   zarzycki at apple.com
Date:     2007-12-07 13:15:23 -0800 (Fri, 07 Dec 2007)

Log Message:
-----------
<rdar://problem/5502233> SULeoCeto: ReportCrash can deadlock against itself if it crashes prior to main()

Modified Paths:
--------------
    branches/SULeopard/launchd/src/Makefile.am
    branches/SULeopard/launchd/src/Makefile.in
    branches/SULeopard/launchd/src/launchd_core_logic.c
    branches/SULeopard/launchd/src/launchd_runtime.c
    branches/SULeopard/launchd/src/launchd_runtime.h
    branches/SULeopard/launchd/src/liblaunch_private.h

Modified: branches/SULeopard/launchd/src/Makefile.am
===================================================================
--- branches/SULeopard/launchd/src/Makefile.am	2007-12-07 21:06:19 UTC (rev 23458)
+++ branches/SULeopard/launchd/src/Makefile.am	2007-12-07 21:15:23 UTC (rev 23459)
@@ -2,7 +2,7 @@
 
 CLEANFILES = protocol_vproc.h protocol_vprocServer.c protocol_vprocUser.c protocol_vprocServer.h		\
 	     launchd_internal.h launchd_internalServer.h launchd_internalServer.c launchd_internalUser.c	\
-	     notifyServer.c notifyServer.h job_replyUser.c job_reply.h __version.c
+	     notifyServer.c notifyServer.h job_replyUser.c job_reply.h __version.c mach_excServer.c mach_excServer.h
 
 protocol_vproc.h protocol_vprocServer.c protocol_vprocUser.c protocol_vprocServer.h: $(srcdir)/protocol_job.defs
 	mig $(MIGFLAGS) -sheader protocol_vprocServer.h $(srcdir)/protocol_job.defs
@@ -48,9 +48,9 @@
 
 launchd_CFLAGS = -mdynamic-no-pic $(AM_CFLAGS) -Wno-unused-parameter
 launchd_LDFLAGS = -lbsm
-launchd_SOURCES = launchd.c launchd_core_logic.c launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c launchd_internalUser.c launchd_internalServer.c job_replyUser.c launchd_runtime.c launchd_runtime_kill.c
+launchd_SOURCES = launchd.c launchd_core_logic.c launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c launchd_internalUser.c launchd_internalServer.c job_replyUser.c launchd_runtime.c launchd_runtime_kill.c mach_excServer.c
 
-launchd_runtime.c:: notifyServer.h launchd_internal.h
+launchd_runtime.c:: notifyServer.h launchd_internal.h mach_excServer.h
 launchd_core_logic.c:: protocol_vproc.h job_reply.h protocol_vprocServer.h
 
 launchproxy_LDFLAGS = -weak_framework Security
@@ -58,6 +58,9 @@
 notifyServer.c notifyServer.h: /usr/include/mach/notify.defs
 	mig $(MIGFLAGS) -header /dev/null -user /dev/null -sheader notifyServer.h /usr/include/mach/notify.defs
 
+mach_excServer.c mach_excServer.h: /usr/include/mach/mach_exc.defs
+	mig $(MIGFLAGS) -header /dev/null -user /dev/null -sheader mach_excServer.h /usr/include/mach/mach_exc.defs
+
 job_replyUser.c job_reply.h: $(srcdir)/protocol_job_reply.defs
 	mig $(MIGFLAGS) -sheader /dev/null -server /dev/null $(srcdir)/protocol_job_reply.defs
 

Modified: branches/SULeopard/launchd/src/Makefile.in
===================================================================
--- branches/SULeopard/launchd/src/Makefile.in	2007-12-07 21:06:19 UTC (rev 23458)
+++ branches/SULeopard/launchd/src/Makefile.in	2007-12-07 21:15:23 UTC (rev 23459)
@@ -96,7 +96,8 @@
 am__launchd_SOURCES_DIST = launchd.c launchd_core_logic.c \
 	launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c \
 	launchd_internalUser.c launchd_internalServer.c \
-	job_replyUser.c launchd_runtime.c launchd_runtime_kill.c
+	job_replyUser.c launchd_runtime.c launchd_runtime_kill.c \
+	mach_excServer.c
 @LIBS_ONLY_FALSE at am_launchd_OBJECTS = launchd-launchd.$(OBJEXT) \
 @LIBS_ONLY_FALSE@	launchd-launchd_core_logic.$(OBJEXT) \
 @LIBS_ONLY_FALSE@	launchd-launchd_unix_ipc.$(OBJEXT) \
@@ -106,7 +107,8 @@
 @LIBS_ONLY_FALSE@	launchd-launchd_internalServer.$(OBJEXT) \
 @LIBS_ONLY_FALSE@	launchd-job_replyUser.$(OBJEXT) \
 @LIBS_ONLY_FALSE@	launchd-launchd_runtime.$(OBJEXT) \
- at LIBS_ONLY_FALSE@	launchd-launchd_runtime_kill.$(OBJEXT)
+ at LIBS_ONLY_FALSE@	launchd-launchd_runtime_kill.$(OBJEXT) \
+ at LIBS_ONLY_FALSE@	launchd-mach_excServer.$(OBJEXT)
 launchd_OBJECTS = $(am_launchd_OBJECTS)
 launchd_LDADD = $(LDADD)
 launchd_LINK = $(CCLD) $(launchd_CFLAGS) $(CFLAGS) $(launchd_LDFLAGS) \
@@ -238,7 +240,7 @@
 AM_CFLAGS = -no-cpp-precomp -F/System/Library/PrivateFrameworks -Wall -Wextra -Waggregate-return -Wshadow -Wmissing-prototypes -Wmissing-declarations -Werror -D__MigTypeCheck=1 -fvisibility=hidden -Dmig_external=__private_extern__
 CLEANFILES = protocol_vproc.h protocol_vprocServer.c protocol_vprocUser.c protocol_vprocServer.h		\
 	     launchd_internal.h launchd_internalServer.h launchd_internalServer.c launchd_internalUser.c	\
-	     notifyServer.c notifyServer.h job_replyUser.c job_reply.h __version.c
+	     notifyServer.c notifyServer.h job_replyUser.c job_reply.h __version.c mach_excServer.c mach_excServer.h
 
 @LIBS_ONLY_TRUE at noinst_LIBRARIES = liblaunch.a liblaunch_profile.a
 @LIBS_ONLY_TRUE at liblaunch_a_CFLAGS = -D__DARWIN_NON_CANCELABLE=1 $(AM_CFLAGS)
@@ -253,7 +255,7 @@
 @LIBS_ONLY_FALSE at SystemStarter_SOURCES = StartupItems.c IPC.c SystemStarter.c
 @LIBS_ONLY_FALSE at launchd_CFLAGS = -mdynamic-no-pic $(AM_CFLAGS) -Wno-unused-parameter
 @LIBS_ONLY_FALSE at launchd_LDFLAGS = -lbsm
- at LIBS_ONLY_FALSE@launchd_SOURCES = launchd.c launchd_core_logic.c launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c launchd_internalUser.c launchd_internalServer.c job_replyUser.c launchd_runtime.c launchd_runtime_kill.c
+ at LIBS_ONLY_FALSE@launchd_SOURCES = launchd.c launchd_core_logic.c launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c launchd_internalUser.c launchd_internalServer.c job_replyUser.c launchd_runtime.c launchd_runtime_kill.c mach_excServer.c
 @LIBS_ONLY_FALSE at launchproxy_LDFLAGS = -weak_framework Security
 @LIBS_ONLY_FALSE at man1_MANS = wait4path.1 launchctl.1
 @LIBS_ONLY_FALSE at man5_MANS = launchd.plist.5 launchd.conf.5
@@ -423,6 +425,7 @@
 @AMDEP_TRUE@@am__include@ @am__quote at ./$(DEPDIR)/launchd-launchd_runtime.Po at am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote at ./$(DEPDIR)/launchd-launchd_runtime_kill.Po at am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote at ./$(DEPDIR)/launchd-launchd_unix_ipc.Po at am__quote@
+ at AMDEP_TRUE@@am__include@ @am__quote at ./$(DEPDIR)/launchd-mach_excServer.Po at am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote at ./$(DEPDIR)/launchd-notifyServer.Po at am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote at ./$(DEPDIR)/launchd-protocol_vprocServer.Po at am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote at ./$(DEPDIR)/launchproxy.Po at am__quote@
@@ -787,6 +790,20 @@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='launchd_runtime_kill.c' object='launchd-launchd_runtime_kill.obj' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(launchd_CFLAGS) $(CFLAGS) -c -o launchd-launchd_runtime_kill.obj `if test -f 'launchd_runtime_kill.c'; then $(CYGPATH_W) 'launchd_runtime_kill.c'; else $(CYGPATH_W) '$(srcdir)/launchd_runtime_kill.c'; fi`
+
+launchd-mach_excServer.o: mach_excServer.c
+ at am__fastdepCC_TRUE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(launchd_CFLAGS) $(CFLAGS) -MT launchd-mach_excServer.o -MD -MP -MF $(DEPDIR)/launchd-mach_excServer.Tpo -c -o launchd-mach_excServer.o `test -f 'mach_excServer.c' || echo '$(srcdir)/'`mach_excServer.c
+ at am__fastdepCC_TRUE@	mv -f $(DEPDIR)/launchd-mach_excServer.Tpo $(DEPDIR)/launchd-mach_excServer.Po
+ at AMDEP_TRUE@@am__fastdepCC_FALSE@	source='mach_excServer.c' object='launchd-mach_excServer.o' libtool=no @AMDEPBACKSLASH@
+ at AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+ at am__fastdepCC_FALSE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(launchd_CFLAGS) $(CFLAGS) -c -o launchd-mach_excServer.o `test -f 'mach_excServer.c' || echo '$(srcdir)/'`mach_excServer.c
+
+launchd-mach_excServer.obj: mach_excServer.c
+ at am__fastdepCC_TRUE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(launchd_CFLAGS) $(CFLAGS) -MT launchd-mach_excServer.obj -MD -MP -MF $(DEPDIR)/launchd-mach_excServer.Tpo -c -o launchd-mach_excServer.obj `if test -f 'mach_excServer.c'; then $(CYGPATH_W) 'mach_excServer.c'; else $(CYGPATH_W) '$(srcdir)/mach_excServer.c'; fi`
+ at am__fastdepCC_TRUE@	mv -f $(DEPDIR)/launchd-mach_excServer.Tpo $(DEPDIR)/launchd-mach_excServer.Po
+ at AMDEP_TRUE@@am__fastdepCC_FALSE@	source='mach_excServer.c' object='launchd-mach_excServer.obj' libtool=no @AMDEPBACKSLASH@
+ at AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+ at am__fastdepCC_FALSE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(launchd_CFLAGS) $(CFLAGS) -c -o launchd-mach_excServer.obj `if test -f 'mach_excServer.c'; then $(CYGPATH_W) 'mach_excServer.c'; else $(CYGPATH_W) '$(srcdir)/mach_excServer.c'; fi`
 install-man1: $(man1_MANS) $(man_MANS)
 	@$(NORMAL_INSTALL)
 	test -z "$(man1dir)" || $(MKDIR_P) "$(DESTDIR)$(man1dir)"
@@ -1148,12 +1165,15 @@
 @LIBS_ONLY_TRUE@	cp liblaunch.a $(DESTDIR)/usr/local/lib/system/liblaunch_debug.a
 @LIBS_ONLY_TRUE@	cp liblaunch_profile.a $(DESTDIR)/usr/local/lib/system/liblaunch_profile.a
 
- at LIBS_ONLY_FALSE@launchd_runtime.c:: notifyServer.h launchd_internal.h
+ at LIBS_ONLY_FALSE@launchd_runtime.c:: notifyServer.h launchd_internal.h mach_excServer.h
 @LIBS_ONLY_FALSE at launchd_core_logic.c:: protocol_vproc.h job_reply.h protocol_vprocServer.h
 
 @LIBS_ONLY_FALSE at notifyServer.c notifyServer.h: /usr/include/mach/notify.defs
 @LIBS_ONLY_FALSE@	mig $(MIGFLAGS) -header /dev/null -user /dev/null -sheader notifyServer.h /usr/include/mach/notify.defs
 
+ at LIBS_ONLY_FALSE@mach_excServer.c mach_excServer.h: /usr/include/mach/mach_exc.defs
+ at LIBS_ONLY_FALSE@	mig $(MIGFLAGS) -header /dev/null -user /dev/null -sheader mach_excServer.h /usr/include/mach/mach_exc.defs
+
 @LIBS_ONLY_FALSE at job_replyUser.c job_reply.h: $(srcdir)/protocol_job_reply.defs
 @LIBS_ONLY_FALSE@	mig $(MIGFLAGS) -sheader /dev/null -server /dev/null $(srcdir)/protocol_job_reply.defs
 

Modified: branches/SULeopard/launchd/src/launchd_core_logic.c
===================================================================
--- branches/SULeopard/launchd/src/launchd_core_logic.c	2007-12-07 21:06:19 UTC (rev 23458)
+++ branches/SULeopard/launchd/src/launchd_core_logic.c	2007-12-07 21:15:23 UTC (rev 23459)
@@ -333,6 +333,7 @@
 	char *groupname;
 	char *stdoutpath;
 	char *stderrpath;
+	char *alt_exc_handler;
 	struct machservice *lastlookup;
 	unsigned int lastlookup_gennum;
 	char *seatbelt_profile;
@@ -360,7 +361,7 @@
 		     currently_ignored:1, forced_peers_to_demand_mode:1, setnice:1, hopefully_exits_last:1, removal_pending:1,
 		     wait4pipe_eof:1, sent_sigkill:1, debug_before_kill:1, weird_bootstrap:1, start_on_mount:1,
 		     per_user:1, hopefully_exits_first:1, deny_unknown_mslookups:1, unload_at_mig_return:1, abandon_pg:1,
-		     poll_for_vfs_changes:1;
+		     poll_for_vfs_changes:1, internal_exc_handler:1;
 	const char label[0];
 };
 
@@ -861,6 +862,9 @@
 	if (j->stderrpath) {
 		free(j->stderrpath);
 	}
+	if (j->alt_exc_handler) {
+		free(j->alt_exc_handler);
+	}
 	if (j->seatbelt_profile) {
 		free(j->seatbelt_profile);
 	}
@@ -1323,6 +1327,13 @@
 			found_key = true;
 		}
 		break;
+	case 'm':
+	case 'M':
+		if (strcasecmp(key, LAUNCH_JOBKEY_MACHEXCEPTIONHANDLER) == 0) {
+			j->internal_exc_handler = value;
+			found_key = true;
+		}
+		break;
 	case 'i':
 	case 'I':
 		if (strcasecmp(key, LAUNCH_JOBKEY_INITGROUPS) == 0) {
@@ -1376,6 +1387,12 @@
 	char **where2put = NULL;
 
 	switch (key[0]) {
+	case 'm':
+	case 'M':
+		if (strcasecmp(key, LAUNCH_JOBKEY_MACHEXCEPTIONHANDLER) == 0) {
+			where2put = &j->alt_exc_handler;
+		}
+		break;
 	case 'p':
 	case 'P':
 		if (strcasecmp(key, LAUNCH_JOBKEY_PROGRAM) == 0) {
@@ -4002,9 +4019,20 @@
 void
 job_setup_exception_port(job_t j, task_t target_task)
 {
+	struct machservice *ms;
 	thread_state_flavor_t f = 0;
+	mach_port_t exc_port = the_exception_server;
 
-	if (!the_exception_server) {
+	if (j->alt_exc_handler) {
+		ms = jobmgr_lookup_service(j->mgr, j->alt_exc_handler, true, 0);
+		if (ms) {
+			exc_port = machservice_port(ms);
+		} else {
+			job_log(j, LOG_WARNING, "Falling back to default Mach exception handler. Could not find: %s", j->alt_exc_handler);
+		}
+	} else if (j->internal_exc_handler) {
+		exc_port = runtime_get_kernel_port();
+	} else if (!exc_port) {
 		return;
 	}
 
@@ -4015,9 +4043,9 @@
 #endif
 
 	if (target_task) {
-		job_assumes(j, task_set_exception_ports(target_task, EXC_MASK_CRASH, the_exception_server,
+		job_assumes(j, task_set_exception_ports(target_task, EXC_MASK_CRASH, exc_port,
 					EXCEPTION_STATE_IDENTITY | MACH_EXCEPTION_CODES, f) == KERN_SUCCESS);
-	} else if (getpid() == 1) {
+	} else if (getpid() == 1 && the_exception_server) {
 		mach_port_t mhp = mach_host_self();
 		job_assumes(j, host_set_exception_ports(mhp, EXC_MASK_CRASH, the_exception_server,
 					EXCEPTION_STATE_IDENTITY | MACH_EXCEPTION_CODES, f) == KERN_SUCCESS);

Modified: branches/SULeopard/launchd/src/launchd_runtime.c
===================================================================
--- branches/SULeopard/launchd/src/launchd_runtime.c	2007-12-07 21:06:19 UTC (rev 23458)
+++ branches/SULeopard/launchd/src/launchd_runtime.c	2007-12-07 21:15:23 UTC (rev 23459)
@@ -61,6 +61,7 @@
 #include "launchd_internalServer.h"
 #include "launchd_internal.h"
 #include "notifyServer.h"
+#include "mach_excServer.h"
 
 /* We shouldn't be including these */
 #include "launch.h"
@@ -86,6 +87,7 @@
 static void *kqueue_demand_loop(void *arg);
 static void log_kevent_struct(int level, struct kevent *kev, int indx);
 
+static boolean_t launchd_internal_demux(mach_msg_header_t *Request, mach_msg_header_t *Reply);
 static void record_caller_creds(mach_msg_header_t *mh);
 static void launchd_runtime2(mach_msg_size_t msg_size, mig_reply_error_t *bufRequest, mig_reply_error_t *bufReply);
 static mach_msg_size_t max_msg_size;
@@ -115,6 +117,12 @@
 };
 static sigset_t sigign_set;
 
+mach_port_t
+runtime_get_kernel_port(void)
+{
+	return launchd_internal_port;
+}
+
 void
 launchd_runtime_init(void)
 {
@@ -846,9 +854,11 @@
 {
 	if (launchd_internal_server_routine(Request)) {
 		return launchd_internal_server(Request, Reply);
+	} else if (notify_server_routine(Request)) {
+		return notify_server(Request, Reply);
+	} else {
+		return mach_exc_server(Request, Reply);
 	}
-
-	return notify_server(Request, Reply);
 }
 
 kern_return_t
@@ -1450,3 +1460,49 @@
 {
 	runtime_busy_cnt--;
 }
+
+kern_return_t
+catch_mach_exception_raise(mach_port_t exception_port, mach_port_t thread, mach_port_t task,
+		exception_type_t exception, mach_exception_data_t code, mach_msg_type_number_t codeCnt)
+{
+	runtime_syslog(LOG_NOTICE, "%s(): thread: 0x%x task: 0x%x type: 0x%x code: %p codeCnt: 0x%x",
+			__func__, thread, task, exception, code, codeCnt);
+
+	launchd_assumes(launchd_mport_deallocate(thread) == KERN_SUCCESS);
+	launchd_assumes(launchd_mport_deallocate(task) == KERN_SUCCESS);
+
+	return 0;
+}
+
+kern_return_t
+catch_mach_exception_raise_state(mach_port_t exception_port,
+		exception_type_t exception, const mach_exception_data_t code, mach_msg_type_number_t codeCnt,
+		int *flavor, const thread_state_t old_state, mach_msg_type_number_t old_stateCnt,
+		thread_state_t new_state, mach_msg_type_number_t *new_stateCnt)
+{
+	runtime_syslog(LOG_NOTICE, "%s(): type: 0x%x code: %p codeCnt: 0x%x flavor: %p old_state: %p old_stateCnt: 0x%x new_state: %p new_stateCnt: %p",
+			__func__, exception, code, codeCnt, flavor, old_state, old_stateCnt, new_state, new_stateCnt);
+
+	memcpy(new_state, old_state, old_stateCnt * sizeof(old_state[0]));
+	*new_stateCnt = old_stateCnt;
+
+	return 0;
+}
+
+kern_return_t
+catch_mach_exception_raise_state_identity(mach_port_t exception_port, mach_port_t thread, mach_port_t task,
+		exception_type_t exception, mach_exception_data_t code, mach_msg_type_number_t codeCnt,
+		int *flavor, thread_state_t old_state, mach_msg_type_number_t old_stateCnt,
+		thread_state_t new_state, mach_msg_type_number_t *new_stateCnt)
+{
+	runtime_syslog(LOG_NOTICE, "%s(): thread: 0x%x task: 0x%x type: 0x%x code: %p codeCnt: 0x%x flavor: %p old_state: %p old_stateCnt: 0x%x new_state: %p new_stateCnt: %p",
+			__func__, thread, task, exception, code, codeCnt, flavor, old_state, old_stateCnt, new_state, new_stateCnt);
+
+	memcpy(new_state, old_state, old_stateCnt * sizeof(old_state[0]));
+	*new_stateCnt = old_stateCnt;
+
+	launchd_assumes(launchd_mport_deallocate(thread) == KERN_SUCCESS);
+	launchd_assumes(launchd_mport_deallocate(task) == KERN_SUCCESS);
+
+	return 0;
+}

Modified: branches/SULeopard/launchd/src/launchd_runtime.h
===================================================================
--- branches/SULeopard/launchd/src/launchd_runtime.h	2007-12-07 21:06:19 UTC (rev 23458)
+++ branches/SULeopard/launchd/src/launchd_runtime.h	2007-12-07 21:15:23 UTC (rev 23459)
@@ -56,7 +56,7 @@
 typedef boolean_t (*mig_callback)(mach_msg_header_t *, mach_msg_header_t *);
 typedef void (*timeout_callback)(void);
 
-boolean_t launchd_internal_demux(mach_msg_header_t *Request, mach_msg_header_t *Reply);
+mach_port_t runtime_get_kernel_port(void);
 
 void runtime_add_ref(void);
 void runtime_del_ref(void);

Modified: branches/SULeopard/launchd/src/liblaunch_private.h
===================================================================
--- branches/SULeopard/launchd/src/liblaunch_private.h	2007-12-07 21:06:19 UTC (rev 23458)
+++ branches/SULeopard/launchd/src/liblaunch_private.h	2007-12-07 21:15:23 UTC (rev 23459)
@@ -55,6 +55,7 @@
 #define LAUNCH_JOBKEY_PERJOBMACHSERVICES	"PerJobMachServices"
 #define LAUNCH_JOBKEY_SERVICEIPC		"ServiceIPC"
 #define LAUNCH_JOBKEY_BINARYORDERPREFERENCE	"BinaryOrderPreference"
+#define LAUNCH_JOBKEY_MACHEXCEPTIONHANDLER	"MachExceptionHandler"
 
 #define LAUNCH_JOBKEY_MACH_KUNCSERVER	"kUNCServer"
 #define LAUNCH_JOBKEY_MACH_EXCEPTIONSERVER	"ExceptionServer"

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