[launchd-changes] [23445] trunk/launchd/src
source_changes at macosforge.org
source_changes at macosforge.org
Tue Oct 23 08:47:02 PDT 2007
Revision: 23445
http://trac.macosforge.org/projects/launchd/changeset/23445
Author: zarzycki at apple.com
Date: 2007-10-23 08:47:01 -0700 (Tue, 23 Oct 2007)
Log Message:
-----------
<rdar://problem/5510464> ER: Provide a way for launchd to NULL out a tasks exception report when launched
Modified Paths:
--------------
trunk/launchd/src/Makefile.am
trunk/launchd/src/Makefile.in
trunk/launchd/src/launchd_core_logic.c
trunk/launchd/src/launchd_runtime.c
trunk/launchd/src/launchd_runtime.h
trunk/launchd/src/liblaunch_private.h
Modified: trunk/launchd/src/Makefile.am
===================================================================
--- trunk/launchd/src/Makefile.am 2007-10-23 15:41:39 UTC (rev 23444)
+++ trunk/launchd/src/Makefile.am 2007-10-23 15:47:01 UTC (rev 23445)
@@ -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 job_forwardUser.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 job_forwardUser.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 job_forward.h
launchproxy_LDFLAGS = -weak_framework Security
@@ -61,6 +61,9 @@
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 $(srcdir)/protocol_job_reply.defs
Modified: trunk/launchd/src/Makefile.in
===================================================================
--- trunk/launchd/src/Makefile.in 2007-10-23 15:41:39 UTC (rev 23444)
+++ trunk/launchd/src/Makefile.in 2007-10-23 15:47:01 UTC (rev 23445)
@@ -97,7 +97,7 @@
launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c \
launchd_internalUser.c launchd_internalServer.c \
job_replyUser.c launchd_runtime.c launchd_runtime_kill.c \
- job_forwardUser.c
+ job_forwardUser.c mach_excServer.c
@LIBS_ONLY_FALSE at am_launchd_OBJECTS = launchd-launchd.$(OBJEXT) \
@LIBS_ONLY_FALSE@ launchd-launchd_core_logic.$(OBJEXT) \
@LIBS_ONLY_FALSE@ launchd-launchd_unix_ipc.$(OBJEXT) \
@@ -108,7 +108,8 @@
@LIBS_ONLY_FALSE@ launchd-job_replyUser.$(OBJEXT) \
@LIBS_ONLY_FALSE@ launchd-launchd_runtime.$(OBJEXT) \
@LIBS_ONLY_FALSE@ launchd-launchd_runtime_kill.$(OBJEXT) \
- at LIBS_ONLY_FALSE@ launchd-job_forwardUser.$(OBJEXT)
+ at LIBS_ONLY_FALSE@ launchd-job_forwardUser.$(OBJEXT) \
+ at LIBS_ONLY_FALSE@ launchd-mach_excServer.$(OBJEXT)
launchd_OBJECTS = $(am_launchd_OBJECTS)
launchd_LDADD = $(LDADD)
launchd_LINK = $(CCLD) $(launchd_CFLAGS) $(CFLAGS) $(launchd_LDFLAGS) \
@@ -240,7 +241,7 @@
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)
@@ -255,7 +256,7 @@
@LIBS_ONLY_FALSE at SystemStarter_SOURCES = StartupItems.c IPC.c SystemStarter.c
@LIBS_ONLY_FALSE at launchd_CFLAGS = -mdynamic-no-pic $(AM_CFLAGS) -Wno-unused-parameter
@LIBS_ONLY_FALSE at launchd_LDFLAGS = -lbsm
- at LIBS_ONLY_FALSE@launchd_SOURCES = launchd.c launchd_core_logic.c launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c launchd_internalUser.c launchd_internalServer.c job_replyUser.c launchd_runtime.c launchd_runtime_kill.c job_forwardUser.c
+ at LIBS_ONLY_FALSE@launchd_SOURCES = launchd.c launchd_core_logic.c launchd_unix_ipc.c protocol_vprocServer.c notifyServer.c launchd_internalUser.c launchd_internalServer.c job_replyUser.c launchd_runtime.c launchd_runtime_kill.c job_forwardUser.c mach_excServer.c
@LIBS_ONLY_FALSE at launchproxy_LDFLAGS = -weak_framework Security
@LIBS_ONLY_FALSE at man1_MANS = wait4path.1 launchctl.1
@LIBS_ONLY_FALSE at man5_MANS = launchd.plist.5 launchd.conf.5
@@ -426,6 +427,7 @@
@AMDEP_TRUE@@am__include@ @am__quote at ./$(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@
@@ -804,6 +806,20 @@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='job_forwardUser.c' object='launchd-job_forwardUser.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-job_forwardUser.obj `if test -f 'job_forwardUser.c'; then $(CYGPATH_W) 'job_forwardUser.c'; else $(CYGPATH_W) '$(srcdir)/job_forwardUser.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)"
@@ -1165,7 +1181,7 @@
@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 job_forward.h
@LIBS_ONLY_FALSE at job_forwardUser.c job_forward.h: $(srcdir)/protocol_job_forward.defs
@@ -1174,6 +1190,9 @@
@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: trunk/launchd/src/launchd_core_logic.c
===================================================================
--- trunk/launchd/src/launchd_core_logic.c 2007-10-23 15:41:39 UTC (rev 23444)
+++ trunk/launchd/src/launchd_core_logic.c 2007-10-23 15:47:01 UTC (rev 23445)
@@ -334,6 +334,7 @@
char *groupname;
char *stdoutpath;
char *stderrpath;
+ char *alt_exc_handler;
struct machservice *lastlookup;
unsigned int lastlookup_gennum;
char *seatbelt_profile;
@@ -361,7 +362,7 @@
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];
};
@@ -862,6 +863,9 @@
if (j->stderrpath) {
free(j->stderrpath);
}
+ if (j->alt_exc_handler) {
+ free(j->alt_exc_handler);
+ }
if (j->seatbelt_profile) {
free(j->seatbelt_profile);
}
@@ -1324,6 +1328,13 @@
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) {
@@ -1377,6 +1388,12 @@
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) {
@@ -4003,9 +4020,20 @@
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;
}
@@ -4016,9 +4044,9 @@
#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: trunk/launchd/src/launchd_runtime.c
===================================================================
--- trunk/launchd/src/launchd_runtime.c 2007-10-23 15:41:39 UTC (rev 23444)
+++ trunk/launchd/src/launchd_runtime.c 2007-10-23 15:47:01 UTC (rev 23445)
@@ -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;
+}
+
static int internal_mask_pri = LOG_UPTO(LOG_NOTICE);
//static int internal_mask_pri = LOG_UPTO(LOG_DEBUG);
@@ -850,9 +858,11 @@
{
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
@@ -1451,3 +1461,57 @@
{
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)
+{
+ pid_t p4t = -1;
+
+ launchd_assumes(pid_for_task(task, &p4t) == 0);
+
+ runtime_syslog(LOG_NOTICE, "%s(): PID: %u thread: 0x%x type: 0x%x code: %p codeCnt: 0x%x",
+ __func__, p4t, thread, 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)
+{
+ pid_t p4t = -1;
+
+ launchd_assumes(pid_for_task(task, &p4t) == 0);
+
+ runtime_syslog(LOG_NOTICE, "%s(): PID: %u thread: 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__, p4t, thread, 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: trunk/launchd/src/launchd_runtime.h
===================================================================
--- trunk/launchd/src/launchd_runtime.h 2007-10-23 15:41:39 UTC (rev 23444)
+++ trunk/launchd/src/launchd_runtime.h 2007-10-23 15:47:01 UTC (rev 23445)
@@ -98,7 +98,7 @@
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: trunk/launchd/src/liblaunch_private.h
===================================================================
--- trunk/launchd/src/liblaunch_private.h 2007-10-23 15:41:39 UTC (rev 23444)
+++ trunk/launchd/src/liblaunch_private.h 2007-10-23 15:47:01 UTC (rev 23445)
@@ -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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