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replace struct msghdr macros

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This commit is contained in:
Kurt Zeilenga 2005-08-13 02:17:12 +00:00
parent d9e8e3952c
commit f799a2e4ba
6 changed files with 182 additions and 84 deletions
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26
build/openldap.m4
View file

@ -1261,31 +1261,7 @@ AC_DEFUN([OL_SASL_COMPAT],
], [ol_cv_sasl_compat=yes], [ol_cv_sasl_compat=no])]) ], [ol_cv_sasl_compat=yes], [ol_cv_sasl_compat=no])])
]) ])
dnl ==================================================================== dnl ====================================================================
dnl check for msg_accrights in msghdr dnl check for SSL compatibility
AC_DEFUN([OL_MSGHDR_MSG_ACCRIGHTS],
[AC_CACHE_CHECK(for msg_accrights in msghdr, ol_cv_msghdr_msg_accrights,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
[[struct msghdr m; m.msg_accrightslen=0]])],
[ol_cv_msghdr_msg_accrights=yes],
[ol_cv_msghdr_msg_accrights=no])])
if test $ol_cv_msghdr_msg_accrights = "yes" ; then
AC_DEFINE(HAVE_MSGHDR_MSG_ACCRIGHTS,1,
[define if struct msghdr has msg_accrights])
fi
])dnl
dnl ====================================================================
dnl check for cmsghdr
AC_DEFUN([OL_MSGHDR_MSG_CONTROL],
[AC_CACHE_CHECK(for msg_control in msghdr, ol_cv_msghdr_msg_control,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
[[struct msghdr m; m.msg_control=(struct cmsghdr *)0]])],
[ol_cv_msghdr_msg_control=yes],
[ol_cv_msghdr_msg_control=no])])
if test $ol_cv_msghdr_msg_control = "yes" ; then
AC_DEFINE(HAVE_MSGHDR_MSG_CONTROL,1,
[define if struct msghdr has msg_control])
fi
])dnl
AC_DEFUN([OL_SSL_COMPAT], AC_DEFUN([OL_SSL_COMPAT],
[AC_CACHE_CHECK([OpenSSL library version (CRL checking capability)], [ol_cv_ssl_crl_compat],[ [AC_CACHE_CHECK([OpenSSL library version (CRL checking capability)], [ol_cv_ssl_crl_compat],[
AC_EGREP_CPP(__ssl_compat,[ AC_EGREP_CPP(__ssl_compat,[

182
configure vendored
View file

@ -1,5 +1,5 @@
#! /bin/sh #! /bin/sh
# From configure.in OpenLDAP: pkg/ldap/configure.in. # From configure.in OpenLDAP: pkg/ldap/configure.in,v 1.586.2.15 2005/08/12 22:48:41 kurt Exp .
# Guess values for system-dependent variables and create Makefiles. # Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.59. # Generated by GNU Autoconf 2.59.
# #
@ -51671,9 +51671,9 @@ if test "$ac_cv_func_getopt" != yes; then
LIBSRCS="$LIBSRCS getopt.c" LIBSRCS="$LIBSRCS getopt.c"
fi fi
if test "$ac_cv_func_getpeereid" != yes; then if test "$ac_cv_func_getpeereid" != yes; then
echo "$as_me:$LINENO: checking for msg_accrights in msghdr" >&5 echo "$as_me:$LINENO: checking for struct msghdr.msg_accrightslen" >&5
echo $ECHO_N "checking for msg_accrights in msghdr... $ECHO_C" >&6 echo $ECHO_N "checking for struct msghdr.msg_accrightslen... $ECHO_C" >&6
if test "${ol_cv_msghdr_msg_accrights+set}" = set; then if test "${ac_cv_member_struct_msghdr_msg_accrightslen+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6 echo $ECHO_N "(cached) $ECHO_C" >&6
else else
cat >conftest.$ac_ext <<_ACEOF cat >conftest.$ac_ext <<_ACEOF
@ -51682,11 +51682,17 @@ _ACEOF
cat confdefs.h >>conftest.$ac_ext cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */ /* end confdefs.h. */
$ac_includes_default
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h> #include <sys/socket.h>
#endif
int int
main () main ()
{ {
struct msghdr m; m.msg_accrightslen=0 static struct msghdr ac_aggr;
if (ac_aggr.msg_accrightslen)
return 0;
; ;
return 0; return 0;
} }
@ -51713,42 +51719,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_status=$? ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then (exit $ac_status); }; }; then
ol_cv_msghdr_msg_accrights=yes ac_cv_member_struct_msghdr_msg_accrightslen=yes
else else
echo "$as_me: failed program was:" >&5 echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5 sed 's/^/| /' conftest.$ac_ext >&5
ol_cv_msghdr_msg_accrights=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ol_cv_msghdr_msg_accrights" >&5
echo "${ECHO_T}$ol_cv_msghdr_msg_accrights" >&6
if test $ol_cv_msghdr_msg_accrights = "yes" ; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_MSGHDR_MSG_ACCRIGHTS 1
_ACEOF
fi
if test "$ac_cv_func_getpeereid" != yes; then
echo "$as_me:$LINENO: checking for msg_control in msghdr" >&5
echo $ECHO_N "checking for msg_control in msghdr... $ECHO_C" >&6
if test "${ol_cv_msghdr_msg_control+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */ /* confdefs.h. */
_ACEOF _ACEOF
cat confdefs.h >>conftest.$ac_ext cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */ /* end confdefs.h. */
$ac_includes_default
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h> #include <sys/socket.h>
#endif
int int
main () main ()
{ {
struct msghdr m; m.msg_control=(struct cmsghdr *)0 static struct msghdr ac_aggr;
if (sizeof ac_aggr.msg_accrightslen)
return 0;
; ;
return 0; return 0;
} }
@ -51775,23 +51767,145 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_status=$? ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then (exit $ac_status); }; }; then
ol_cv_msghdr_msg_control=yes ac_cv_member_struct_msghdr_msg_accrightslen=yes
else else
echo "$as_me: failed program was:" >&5 echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5 sed 's/^/| /' conftest.$ac_ext >&5
ol_cv_msghdr_msg_control=no ac_cv_member_struct_msghdr_msg_accrightslen=no
fi fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
fi fi
echo "$as_me:$LINENO: result: $ol_cv_msghdr_msg_control" >&5 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
echo "${ECHO_T}$ol_cv_msghdr_msg_control" >&6 fi
if test $ol_cv_msghdr_msg_control = "yes" ; then echo "$as_me:$LINENO: result: $ac_cv_member_struct_msghdr_msg_accrightslen" >&5
echo "${ECHO_T}$ac_cv_member_struct_msghdr_msg_accrightslen" >&6
if test $ac_cv_member_struct_msghdr_msg_accrightslen = yes; then
cat >>confdefs.h <<\_ACEOF cat >>confdefs.h <<_ACEOF
#define HAVE_MSGHDR_MSG_CONTROL 1 #define HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTSLEN 1
_ACEOF _ACEOF
fi
if test "$ac_cv_member_struct_msghdr_msg_accrightslen" != yes; then
echo "$as_me:$LINENO: checking for struct msghdr.msg_control" >&5
echo $ECHO_N "checking for struct msghdr.msg_control... $ECHO_C" >&6
if test "${ac_cv_member_struct_msghdr_msg_control+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
$ac_includes_default
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
int
main ()
{
static struct msghdr ac_aggr;
if (ac_aggr.msg_control)
return 0;
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest.$ac_objext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_member_struct_msghdr_msg_control=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
$ac_includes_default
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
int
main ()
{
static struct msghdr ac_aggr;
if (sizeof ac_aggr.msg_control)
return 0;
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest.$ac_objext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_member_struct_msghdr_msg_control=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_member_struct_msghdr_msg_control=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ac_cv_member_struct_msghdr_msg_control" >&5
echo "${ECHO_T}$ac_cv_member_struct_msghdr_msg_control" >&6
if test $ac_cv_member_struct_msghdr_msg_control = yes; then
cat >>confdefs.h <<_ACEOF
#define HAVE_STRUCT_MSGHDR_MSG_CONTROL 1
_ACEOF
fi fi
fi fi

16
configure.in
View file

@ -20,7 +20,7 @@ dnl ================================================================
dnl Configure.in for OpenLDAP dnl Configure.in for OpenLDAP
AC_COPYRIGHT([[Copyright 1998-2005 The OpenLDAP Foundation. All rights reserved. AC_COPYRIGHT([[Copyright 1998-2005 The OpenLDAP Foundation. All rights reserved.
Restrictions apply, see COPYRIGHT and LICENSE files.]]) Restrictions apply, see COPYRIGHT and LICENSE files.]])
AC_REVISION($OpenLDAP$) AC_REVISION([$OpenLDAP$])
AC_INIT([OpenLDAP],,[http://www.openldap.org/its/]) AC_INIT([OpenLDAP],,[http://www.openldap.org/its/])
AC_CONFIG_SRCDIR(build/version.sh)dnl AC_CONFIG_SRCDIR(build/version.sh)dnl
dnl ---------------------------------------------------------------- dnl ----------------------------------------------------------------
@ -2536,9 +2536,17 @@ if test "$ac_cv_func_getopt" != yes; then
LIBSRCS="$LIBSRCS getopt.c" LIBSRCS="$LIBSRCS getopt.c"
fi fi
if test "$ac_cv_func_getpeereid" != yes; then if test "$ac_cv_func_getpeereid" != yes; then
OL_MSGHDR_MSG_ACCRIGHTS AC_CHECK_MEMBERS([struct msghdr.msg_accrightslen],,,
if test "$ac_cv_func_getpeereid" != yes; then [$ac_includes_default
OL_MSGHDR_MSG_CONTROL #ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])
if test "$ac_cv_member_struct_msghdr_msg_accrightslen" != yes; then
AC_CHECK_MEMBERS([struct msghdr.msg_control],,,
[$ac_includes_default
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])
fi fi
LIBSRCS="$LIBSRCS getpeereid.c" LIBSRCS="$LIBSRCS getpeereid.c"
fi fi

12
include/portable.hin
View file

@ -403,12 +403,6 @@
/* define this if you have mkversion */ /* define this if you have mkversion */
#undef HAVE_MKVERSION #undef HAVE_MKVERSION
/* define if struct msghdr has msg_accrights */
#undef HAVE_MSGHDR_MSG_ACCRIGHTS
/* define if struct msghdr has msg_control */
#undef HAVE_MSGHDR_MSG_CONTROL
/* define if NDBM is available */ /* define if NDBM is available */
#undef HAVE_NDBM #undef HAVE_NDBM
@ -658,6 +652,12 @@
/* Define to 1 if you have the `strtouq' function. */ /* Define to 1 if you have the `strtouq' function. */
#undef HAVE_STRTOUQ #undef HAVE_STRTOUQ
/* Define to 1 if `msg_accrightslen' is member of `struct msghdr'. */
#undef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTSLEN
/* Define to 1 if `msg_control' is member of `struct msghdr'. */
#undef HAVE_STRUCT_MSGHDR_MSG_CONTROL
/* Define to 1 if `pw_gecos' is member of `struct passwd'. */ /* Define to 1 if `pw_gecos' is member of `struct passwd'. */
#undef HAVE_STRUCT_PASSWD_PW_GECOS #undef HAVE_STRUCT_PASSWD_PW_GECOS

12
libraries/libldap/os-local.c
View file

@ -156,8 +156,8 @@ ldap_pvt_is_socket_ready(LDAP *ld, int s)
#if !defined(HAVE_GETPEEREID) && \ #if !defined(HAVE_GETPEEREID) && \
!defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && \ !defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && \
defined(HAVE_SENDMSG) && (defined(HAVE_MSGHDR_MSG_ACCRIGHTS) || \ defined(HAVE_SENDMSG) && (defined(HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS) || \
defined(HAVE_MSGHDR_MSG_CONTROL)) defined(HAVE_STRUCT_MSGHDR_MSG_CONTROL))
#define DO_SENDMSG #define DO_SENDMSG
static const char abandonPDU[] = {LDAP_TAG_MESSAGE, 6, static const char abandonPDU[] = {LDAP_TAG_MESSAGE, 6,
LDAP_TAG_MSGID, 1, 0, LDAP_REQ_ABANDON, 1, 0}; LDAP_TAG_MSGID, 1, 0, LDAP_REQ_ABANDON, 1, 0};
@ -195,7 +195,7 @@ sendcred:
/* Abandon, noop, has no reply */ /* Abandon, noop, has no reply */
struct iovec iov; struct iovec iov;
struct msghdr msg = {0}; struct msghdr msg = {0};
# ifdef HAVE_MSGHDR_MSG_CONTROL # ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
# ifndef CMSG_SPACE # ifndef CMSG_SPACE
# define CMSG_SPACE(len) (_CMSG_ALIGN( sizeof(struct cmsghdr)) + _CMSG_ALIGN(len) ) # define CMSG_SPACE(len) (_CMSG_ALIGN( sizeof(struct cmsghdr)) + _CMSG_ALIGN(len) )
# endif # endif
@ -207,14 +207,14 @@ sendcred:
unsigned char control[CMSG_SPACE(sizeof(int))]; unsigned char control[CMSG_SPACE(sizeof(int))];
} control_un; } control_un;
struct cmsghdr *cmsg; struct cmsghdr *cmsg;
# endif /* HAVE_MSGHDR_MSG_CONTROL */ # endif /* HAVE_STRUCT_MSGHDR_MSG_CONTROL */
msg.msg_name = NULL; msg.msg_name = NULL;
msg.msg_namelen = 0; msg.msg_namelen = 0;
iov.iov_base = (char *) abandonPDU; iov.iov_base = (char *) abandonPDU;
iov.iov_len = sizeof abandonPDU; iov.iov_len = sizeof abandonPDU;
msg.msg_iov = &iov; msg.msg_iov = &iov;
msg.msg_iovlen = 1; msg.msg_iovlen = 1;
# ifdef HAVE_MSGHDR_MSG_CONTROL # ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
msg.msg_control = control_un.control; msg.msg_control = control_un.control;
msg.msg_controllen = sizeof( control_un.control ); msg.msg_controllen = sizeof( control_un.control );
msg.msg_flags = 0; msg.msg_flags = 0;
@ -228,7 +228,7 @@ sendcred:
# else # else
msg.msg_accrights = (char *)fds; msg.msg_accrights = (char *)fds;
msg.msg_accrightslen = sizeof(int); msg.msg_accrightslen = sizeof(int);
# endif /* HAVE_MSGHDR_MSG_CONTROL */ # endif /* HAVE_STRUCT_MSGHDR_MSG_CONTROL */
sendmsg( s, &msg, 0 ); sendmsg( s, &msg, 0 );
close(fds[0]); close(fds[0]);
close(fds[1]); close(fds[1]);

14
libraries/liblutil/getpeereid.c
View file

@ -32,8 +32,8 @@
#endif #endif
#if !defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && \ #if !defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && \
defined(HAVE_SENDMSG) && (defined(HAVE_MSGHDR_MSG_ACCRIGHTS) || \ defined(HAVE_SENDMSG) && (defined(HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS) || \
defined(HAVE_MSGHDR_MSG_CONTROL)) defined(HAVE_STRUCT_MSGHDR_MSG_CONTROL))
#define DO_SENDMSG #define DO_SENDMSG
#ifdef HAVE_SYS_UIO_H #ifdef HAVE_SYS_UIO_H
#include <sys/uio.h> #include <sys/uio.h>
@ -77,7 +77,7 @@ int getpeereid( int s, uid_t *euid, gid_t *egid )
int err, fd[2]; int err, fd[2];
struct iovec iov; struct iovec iov;
struct msghdr msg = {0}; struct msghdr msg = {0};
# ifdef HAVE_MSGHDR_MSG_CONTROL # ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
# ifndef CMSG_SPACE # ifndef CMSG_SPACE
# define CMSG_SPACE(len) (_CMSG_ALIGN(sizeof(struct cmsghdr)) + _CMSG_ALIGN(len)) # define CMSG_SPACE(len) (_CMSG_ALIGN(sizeof(struct cmsghdr)) + _CMSG_ALIGN(len))
# endif # endif
@ -89,7 +89,7 @@ int getpeereid( int s, uid_t *euid, gid_t *egid )
unsigned char control[CMSG_SPACE(sizeof(int))]; unsigned char control[CMSG_SPACE(sizeof(int))];
} control_un; } control_un;
struct cmsghdr *cmsg; struct cmsghdr *cmsg;
# endif /* HAVE_MSGHDR_MSG_CONTROL */ # endif /* HAVE_STRUCT_MSGHDR_MSG_CONTROL */
struct stat st; struct stat st;
msg.msg_name = NULL; msg.msg_name = NULL;
@ -99,7 +99,7 @@ int getpeereid( int s, uid_t *euid, gid_t *egid )
iov.iov_len = sizeof dummy; iov.iov_len = sizeof dummy;
msg.msg_iov = &iov; msg.msg_iov = &iov;
msg.msg_iovlen = 1; msg.msg_iovlen = 1;
# ifdef HAVE_MSGHDR_MSG_CONTROL # ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
msg.msg_control = control_un.control; msg.msg_control = control_un.control;
msg.msg_controllen = sizeof( control_un.control ); msg.msg_controllen = sizeof( control_un.control );
@ -118,12 +118,12 @@ int getpeereid( int s, uid_t *euid, gid_t *egid )
msg.msg_accrights = (char *)fd; msg.msg_accrights = (char *)fd;
msg.msg_accrightslen = sizeof(fd); msg.msg_accrightslen = sizeof(fd);
if( recvmsg( s, &msg, MSG_PEEK) >= 0 && msg.msg_accrightslen == sizeof(int) ) if( recvmsg( s, &msg, MSG_PEEK) >= 0 && msg.msg_accrightslen == sizeof(int) )
# endif /* HAVE_MSGHDR_MSG_CONTROL*/ # endif /* HAVE_STRUCT_MSGHDR_MSG_CONTROL*/
{ {
/* We must receive a valid descriptor, it must be a pipe, /* We must receive a valid descriptor, it must be a pipe,
* and it must only be accessible by its owner. * and it must only be accessible by its owner.
*/ */
# ifdef HAVE_MSGHDR_MSG_CONTROL # ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
fd[0] = (*(int *)CMSG_DATA( cmsg )); fd[0] = (*(int *)CMSG_DATA( cmsg ));
# endif # endif
err = fstat( fd[0], &st ); err = fstat( fd[0], &st );