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Message-ID: <d3b8a55e-ac7e-e4a9-451f-1bcd2c5b5a92@redhat.com>
Date:   Tue, 7 Jun 2022 16:52:40 -0400
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Subject: Re: [PATCH nfs-utils v2] Update autoconfig files to work with v2.71
Content-Language: en-US
To:     NeilBrown <neilb@suse.de>
Cc:     Linux NFS Mailing List <linux-nfs@vger.kernel.org>
References: <165352672998.11129.5573262612495384287@noble.neil.brown.name>
From:   Steve Dickson <steved@redhat.com>
In-Reply-To: <165352672998.11129.5573262612495384287@noble.neil.brown.name>
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On 5/25/22 8:58 PM, NeilBrown wrote:
> 
> OpenSUSE recently updated autoconf to v2.71, and nfs-utils now doesn't
> build.  This patch fixes it - mostly.
> This patch is the result of:
> 
>   - running autoupdate on configure.am and aclocal/*
>   - removing any sections add that say they can safely be removed
>   - revertion the change to AC_PREREQ.
> 
> I haven't confirmed that it still works with v2.59.  It does seem to
> work with 2.69 at least.
> 
> Signed-off-by: NeilBrown <neilb@suse.de>
Committed... (tag: nfs-utils-2-6-2-rc6)

steved.
> ---
>   aclocal/bsdsignals.m4  |  7 ++--
>   aclocal/kerberos5.m4   |  2 +-
>   aclocal/libblkid.m4    |  5 +--
>   aclocal/libsqlite3.m4  |  5 +--
>   aclocal/libtirpc.m4    |  3 +-
>   aclocal/nfs-utils.m4   |  5 +--
>   aclocal/rpcsec_vers.m4 |  2 +-
>   configure.ac           | 85 +++++++++++++++---------------------------
>   8 files changed, 43 insertions(+), 71 deletions(-)
> 
> diff --git a/aclocal/bsdsignals.m4 b/aclocal/bsdsignals.m4
> index 24572aa721d6..362ddb5bd3bf 100644
> --- a/aclocal/bsdsignals.m4
> +++ b/aclocal/bsdsignals.m4
> @@ -2,13 +2,13 @@ dnl *********** BSD vs. POSIX signal handling **************
>   AC_DEFUN([AC_BSD_SIGNALS], [
>     AC_MSG_CHECKING(for BSD signal semantics)
>     AC_CACHE_VAL(knfsd_cv_bsd_signals,
> -    [AC_TRY_RUN([
> +    [AC_RUN_IFELSE([AC_LANG_SOURCE([[
>   	#include <signal.h>
>   	#include <unistd.h>
>   	#include <sys/wait.h>
>   
>   	static int counter = 0;
> -	static RETSIGTYPE handler(int num) { counter++; }
> +	static void handler(int num) { counter++; }
>   
>   	int main()
>   	{
> @@ -23,8 +23,7 @@ AC_DEFUN([AC_BSD_SIGNALS], [
>   		kill(getpid(), SIGHUP); kill(getpid(), SIGHUP);
>   		return (counter == 2)? 0 : 1;
>   	}
> -    ], knfsd_cv_bsd_signals=yes, knfsd_cv_bsd_signals=no,
> -    [
> +    ]])],[knfsd_cv_bsd_signals=yes],[knfsd_cv_bsd_signals=no],[
>         case "$host_os" in
>           *linux*) knfsd_cv_bsd_signals=no;;
>           *bsd*)   knfsd_cv_bsd_signals=yes;;
> diff --git a/aclocal/kerberos5.m4 b/aclocal/kerberos5.m4
> index bf0e88bc57f4..f96f0fd44e6b 100644
> --- a/aclocal/kerberos5.m4
> +++ b/aclocal/kerberos5.m4
> @@ -6,7 +6,7 @@ dnl The Kerberos gssapi library will be dynamically loaded?
>   AC_DEFUN([AC_KERBEROS_V5],[
>     AC_MSG_CHECKING(for Kerberos v5)
>     AC_ARG_WITH(krb5,
> -  [AC_HELP_STRING([--with-krb5=DIR], [use Kerberos v5 installation in DIR])],
> +  [AS_HELP_STRING([--with-krb5=DIR],[use Kerberos v5 installation in DIR])],
>     [ case "$withval" in
>       yes|no)
>          krb5_with=""
> diff --git a/aclocal/libblkid.m4 b/aclocal/libblkid.m4
> index 10824e9f58f1..1b8884ce6bcd 100644
> --- a/aclocal/libblkid.m4
> +++ b/aclocal/libblkid.m4
> @@ -5,15 +5,14 @@ AC_DEFUN([AC_BLKID_VERS], [
>      [
>       saved_LIBS="$LIBS"
>       LIBS=-lblkid
> -    AC_TRY_RUN([
> +    AC_RUN_IFELSE([AC_LANG_SOURCE([[
>   	#include <blkid/blkid.h>
>   	int main()
>   	{
>   		int vers = blkid_get_library_version(0, 0);
>   		return vers >= 140 ? 0 : 1;
>   	}
> -       ], [libblkid_cv_is_recent=yes], [libblkid_cv_is_recent=no],
> -       [libblkid_cv_is_recent=unknown])
> +       ]])],[libblkid_cv_is_recent=yes],[libblkid_cv_is_recent=no],[libblkid_cv_is_recent=unknown])
>       LIBS="$saved_LIBS"])
>     AC_MSG_RESULT($libblkid_cv_is_recent)
>   ])dnl
> diff --git a/aclocal/libsqlite3.m4 b/aclocal/libsqlite3.m4
> index 8c38993cbba8..16b8c8a1d565 100644
> --- a/aclocal/libsqlite3.m4
> +++ b/aclocal/libsqlite3.m4
> @@ -14,7 +14,7 @@ AC_DEFUN([AC_SQLITE3_VERS], [
>      [
>       saved_LIBS="$LIBS"
>       LIBS=-lsqlite3
> -    AC_TRY_RUN([
> +    AC_RUN_IFELSE([AC_LANG_SOURCE([[
>   	#include <stdio.h>
>   	#include <sqlite3.h>
>   	int main()
> @@ -24,8 +24,7 @@ AC_DEFUN([AC_SQLITE3_VERS], [
>   		return vers != SQLITE_VERSION_NUMBER ||
>   			vers < 3003000;
>   	}
> -       ], [libsqlite3_cv_is_recent=yes], [libsqlite3_cv_is_recent=no],
> -       [libsqlite3_cv_is_recent=unknown])
> +       ]])],[libsqlite3_cv_is_recent=yes],[libsqlite3_cv_is_recent=no],[libsqlite3_cv_is_recent=unknown])
>       LIBS="$saved_LIBS"])
>   
>     AC_MSG_RESULT($libsqlite3_cv_is_recent)
> diff --git a/aclocal/libtirpc.m4 b/aclocal/libtirpc.m4
> index 27368ff24ef1..f7de5193c177 100644
> --- a/aclocal/libtirpc.m4
> +++ b/aclocal/libtirpc.m4
> @@ -37,8 +37,7 @@ dnl
>   AC_DEFUN([AC_LIBTIRPC_OLD], [
>   
>     AC_ARG_WITH([tirpcinclude],
> -              [AC_HELP_STRING([--with-tirpcinclude=DIR],
> -                              [use TI-RPC headers in DIR])],
> +              [AS_HELP_STRING([--with-tirpcinclude=DIR],[use TI-RPC headers in DIR])],
>                 [tirpc_header_dir=$withval],
>                 [tirpc_header_dir=/usr/include/tirpc])
>   
> diff --git a/aclocal/nfs-utils.m4 b/aclocal/nfs-utils.m4
> index fae8b95fe533..5f3ab0c2b301 100644
> --- a/aclocal/nfs-utils.m4
> +++ b/aclocal/nfs-utils.m4
> @@ -2,13 +2,12 @@ dnl *********** GNU libc 2 ***************
>   AC_DEFUN([AC_GNULIBC],[
>     AC_MSG_CHECKING(for GNU libc2)
>     AC_CACHE_VAL(knfsd_cv_glibc2,
> -  [AC_TRY_CPP([
> +  [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
>         #include <features.h>
>         #if !defined(__GLIBC__)
>         # error Nope
>         #endif
> -      ],
> -  knfsd_cv_glibc2=yes, knfsd_cv_glibc2=no)])
> +      ]])],[knfsd_cv_glibc2=yes],[knfsd_cv_glibc2=no])])
>     AC_MSG_RESULT($knfsd_cv_glibc2)
>     if test $knfsd_cv_glibc2 = yes; then
>       CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
> diff --git a/aclocal/rpcsec_vers.m4 b/aclocal/rpcsec_vers.m4
> index 11d2f18cb241..43e5a9669383 100644
> --- a/aclocal/rpcsec_vers.m4
> +++ b/aclocal/rpcsec_vers.m4
> @@ -2,7 +2,7 @@ dnl Checks librpcsec version
>   AC_DEFUN([AC_RPCSEC_VERSION], [
>   
>     AC_ARG_WITH([gssglue],
> -	[AC_HELP_STRING([--with-gssglue], [Use libgssglue for GSS support])])
> +	[AS_HELP_STRING([--with-gssglue],[Use libgssglue for GSS support])])
>     if test x"$with_gssglue" = x"yes"; then
>       PKG_CHECK_MODULES([GSSGLUE], [libgssglue >= 0.3])
>       AC_CHECK_LIB([gssglue], [gss_set_allowable_enctypes])
> diff --git a/configure.ac b/configure.ac
> index 3e1c183b6a07..a13f36915a35 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -14,33 +14,29 @@ dnl *************************************************************
>   dnl * Define the set of applicable options
>   dnl *************************************************************
>   AC_ARG_WITH(release,
> -	[AC_HELP_STRING([--with-release=XXX], [set release to XXX [1]])],
> +	[AS_HELP_STRING([--with-release=XXX],[set release to XXX [1]])],
>   	RELEASE=$withval,
>   	RELEASE=1)
>   	AC_SUBST(RELEASE)
>   AC_ARG_WITH(statedir,
> -	[AC_HELP_STRING([--with-statedir=/foo],
> -			[use state dir /foo @<:@default=/var/lib/nfs@:>@])],
> +	[AS_HELP_STRING([--with-statedir=/foo],[use state dir /foo @<:@default=/var/lib/nfs@:>@])],
>   	statedir=$withval,
>   	statedir=/var/lib/nfs)
>   	AC_SUBST(statedir)
>   AC_ARG_WITH(nfsconfig,
> -	[AC_HELP_STRING([--with-nfsconfig=/config/file],
> -			[use general config file /config/file @<:@default=/etc/nfs.conf@:>@])],
> +	[AS_HELP_STRING([--with-nfsconfig=/config/file],[use general config file /config/file @<:@default=/etc/nfs.conf@:>@])],
>   	nfsconfig=$withval,
>   	nfsconfig=/etc/nfs.conf)
>   	AC_SUBST(nfsconfig)
>   AC_ARG_WITH(statdpath,
> -	[AC_HELP_STRING([--with-statdpath=/foo],
> -			[define the statd state dir as /foo instead of the NFS statedir @<:@default=/var/lib/nfs@:>@])],
> +	[AS_HELP_STRING([--with-statdpath=/foo],[define the statd state dir as /foo instead of the NFS statedir @<:@default=/var/lib/nfs@:>@])],
>   	statdpath=$withval,
>   	statdpath=$statedir
>   	)
>   	AC_SUBST(statdpath)
>   AC_ARG_WITH(statduser,
> -	[AC_HELP_STRING([--with-statduser=rpcuser],
> -                        [statd to run under @<:@rpcuser or nobody@:>@]
> -	)],
> +	[AS_HELP_STRING([--with-statduser=rpcuser],[statd to run under @<:@rpcuser or nobody@:>@
> +	])],
>   	statduser=$withval,
>   	if test "x$cross_compiling" = "xno"; then
>   		if grep -s '^rpcuser:' /etc/passwd > /dev/null; then
> @@ -53,9 +49,8 @@ AC_ARG_WITH(statduser,
>   	fi)
>   	AC_SUBST(statduser)
>   AC_ARG_WITH(start-statd,
> -	[AC_HELP_STRING([--with-start-statd=scriptname],
> -			[When an nfs filesystems is mounted with locking, run this script]
> -	)],
> +	[AS_HELP_STRING([--with-start-statd=scriptname],[When an nfs filesystems is mounted with locking, run this script
> +	])],
>   	startstatd=$withval,
>   	startstatd=/usr/sbin/start-statd
>   	)
> @@ -63,8 +58,7 @@ AC_ARG_WITH(start-statd,
>   	AC_DEFINE_UNQUOTED(START_STATD, "$startstatd", [Define this to a script which can start statd on mount])
>   unitdir=/usr/lib/systemd/system
>   AC_ARG_WITH(systemd,
> -	[AC_HELP_STRING([--with-systemd@<:@=unit-dir-path@:>@],
> -			[install systemd unit files @<:@Default: no, and path defaults to /usr/lib/systemd/system if not given@:>@])],
> +	[AS_HELP_STRING([--with-systemd@<:@=unit-dir-path@:>@],[install systemd unit files @<:@Default: no, and path defaults to /usr/lib/systemd/system if not given@:>@])],
>   	if test "$withval" != "no" ; then
>   		use_systemd=1
>   		if test "$withval" != "yes" ; then
> @@ -78,8 +72,7 @@ AC_ARG_WITH(systemd,
>   	AC_SUBST(unitdir)
>   
>   AC_ARG_ENABLE(nfsv4,
> -	[AC_HELP_STRING([--disable-nfsv4],
> -                        [disable support for NFSv4 @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-nfsv4],[disable support for NFSv4 @<:@default=no@:>@])],
>   	enable_nfsv4=$enableval,
>   	enable_nfsv4=yes)
>   	if test "$enable_nfsv4" = yes; then
> @@ -93,8 +86,7 @@ AC_ARG_ENABLE(nfsv4,
>   	AM_CONDITIONAL(CONFIG_NFSV4, [test "$enable_nfsv4" = "yes"])
>   
>   AC_ARG_ENABLE(nfsv41,
> -	[AC_HELP_STRING([--disable-nfsv41],
> -                        [disable support for NFSv41 @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-nfsv41],[disable support for NFSv41 @<:@default=no@:>@])],
>   	enable_nfsv41=$enableval,
>   	enable_nfsv41=yes)
>   	if test "$enable_nfsv41" = yes; then
> @@ -111,8 +103,7 @@ AC_ARG_ENABLE(nfsv41,
>   	AM_CONDITIONAL(CONFIG_NFSV41, [test "$enable_nfsv41" = "yes"])
>   
>   AC_ARG_ENABLE(gss,
> -	[AC_HELP_STRING([--disable-gss],
> -              [disable client support for rpcsec_gss @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-gss],[disable client support for rpcsec_gss @<:@default=no@:>@])],
>   	enable_gss=$enableval,
>   	enable_gss=yes)
>   	if test "$enable_gss" = yes; then
> @@ -126,8 +117,7 @@ AC_ARG_ENABLE(gss,
>   	AM_CONDITIONAL(CONFIG_GSS, [test "$enable_gss" = "yes"])
>   
>   AC_ARG_ENABLE(svcgss,
> -	[AC_HELP_STRING([--enable-svcgss],
> -    [enable building svcgssd for rpcsec_gss server support @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--enable-svcgss],[enable building svcgssd for rpcsec_gss server support @<:@default=no@:>@])],
>   	enable_svcgss=$enableval,
>   	enable_svcgss=no)
>   	if test "$enable_gss" = yes -a "$enable_svcgss" = yes; then
> @@ -141,12 +131,12 @@ AC_ARG_ENABLE(svcgss,
>   	AM_CONDITIONAL(CONFIG_SVCGSS, [test "$enable_svcgss" = "yes"])
>   
>   AC_ARG_ENABLE(kprefix,
> -	[AC_HELP_STRING([--enable-kprefix], [install progs as rpc.knfsd etc])],
> +	[AS_HELP_STRING([--enable-kprefix],[install progs as rpc.knfsd etc])],
>   	test "$enableval" = "yes" && kprefix=k,
>   	kprefix=)
>   	AC_SUBST(kprefix)
>   AC_ARG_WITH(rpcgen,
> -	[AC_HELP_STRING([--with-rpcgen=internal], [use internal rpcgen instead of system one])],
> +	[AS_HELP_STRING([--with-rpcgen=internal],[use internal rpcgen instead of system one])],
>   	rpcgen_path=$withval,
>   	rpcgen_path=yes )
>   	rpcgen_cflags=-Werror=strict-prototypes
> @@ -166,21 +156,18 @@ AC_ARG_WITH(rpcgen,
>   	AC_SUBST(RPCGEN_PATH)
>   	AM_CONDITIONAL(CONFIG_RPCGEN, [test "$RPCGEN_PATH" = "internal"])
>   AC_ARG_ENABLE(uuid,
> -	[AC_HELP_STRING([--disable-uuid],
> -		[Exclude uuid support to avoid buggy libblkid. @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-uuid],[Exclude uuid support to avoid buggy libblkid. @<:@default=no@:>@])],
>   	if test "$enableval" = "yes" ; then choose_blkid=yes; else choose_blkid=no; fi,
>   	choose_blkid=default)
>   AC_ARG_ENABLE(mount,
> -	[AC_HELP_STRING([--disable-mount],
> -		[Do not build mount.nfs and do use the util-linux mount(8) functionality. @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-mount],[Do not build mount.nfs and do use the util-linux mount(8) functionality. @<:@default=no@:>@])],
>   	enable_mount=$enableval,
>   	enable_mount=yes)
>   	AM_CONDITIONAL(CONFIG_MOUNT, [test "$enable_mount" = "yes"])
>   
>   if test "$enable_mount" = yes; then
>   	AC_ARG_ENABLE(libmount-mount,
> -		[AC_HELP_STRING([--enable-libmount-mount],
> -				[Link mount.nfs with libmount @<:@default=no@:>@])],
> +		[AS_HELP_STRING([--enable-libmount-mount],[Link mount.nfs with libmount @<:@default=no@:>@])],
>   		enable_libmount=$enableval,
>   		enable_libmount=no)
>   else
> @@ -188,14 +175,12 @@ else
>   fi
>   
>   AC_ARG_ENABLE(sbin-override,
> -	[AC_HELP_STRING([--disable-sbin-override],
> -		[Don't force nfsdcltrack and mount helpers into /sbin: always honour --sbindir])],
> +	[AS_HELP_STRING([--disable-sbin-override],[Don't force nfsdcltrack and mount helpers into /sbin: always honour --sbindir])],
>   	enable_sbin_override=$enableval,
>   	enable_sbin_override=yes)
>   	AM_CONDITIONAL(CONFIG_SBIN_OVERRIDE, [test "$enable_sbin_override" = "yes"])
>   AC_ARG_ENABLE(junction,
> -	[AC_HELP_STRING([--enable-junction],
> -			[enable support for NFS junctions @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--enable-junction],[enable support for NFS junctions @<:@default=no@:>@])],
>   	enable_junction=$enableval,
>   	enable_junction=no)
>   	if test "$enable_junction" = yes; then
> @@ -207,13 +192,11 @@ AC_ARG_ENABLE(junction,
>   	AM_CONDITIONAL(CONFIG_JUNCTION, [test "$enable_junction" = "yes" ])
>   
>   AC_ARG_ENABLE(tirpc,
> -	[AC_HELP_STRING([--disable-tirpc],
> -			[disable use of TI-RPC library @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-tirpc],[disable use of TI-RPC library @<:@default=no@:>@])],
>   	enable_tirpc=$enableval,
>   	enable_tirpc=yes)
>   AC_ARG_ENABLE(ipv6,
> -	[AC_HELP_STRING([--disable-ipv6],
> -                        [disable support for IPv6 @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-ipv6],[disable support for IPv6 @<:@default=no@:>@])],
>   	enable_ipv6=$enableval,
>   	enable_ipv6=yes)
>   	if test "$enable_ipv6" = yes; then
> @@ -226,8 +209,7 @@ AC_ARG_ENABLE(ipv6,
>   
>   if test "$enable_mount" = yes; then
>   	AC_ARG_ENABLE(mountconfig,
> -	[AC_HELP_STRING([--disable-mountconfig],
> -        [disable mount to use a configuration file @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-mountconfig],[disable mount to use a configuration file @<:@default=no@:>@])],
>   	enable_mountconfig=$enableval,
>   	enable_mountconfig=yes)
>   	if test "$enable_mountconfig" = no; then
> @@ -236,9 +218,8 @@ if test "$enable_mount" = yes; then
>   		AC_DEFINE(MOUNT_CONFIG, 1,
>   			[Define this if you want mount to read a configuration file])
>   		AC_ARG_WITH(mountfile,
> -			[AC_HELP_STRING([--with-mountfile=filename],
> -			[Using filename as the NFS mount options file [/etc/nfsmounts.conf]]
> -			)],
> +			[AS_HELP_STRING([--with-mountfile=filename],[Using filename as the NFS mount options file [/etc/nfsmounts.conf]
> +			])],
>   		mountfile=$withval,
>   		mountfile=/etc/nfsmount.conf)
>   		AC_SUBST(mountfile)
> @@ -252,20 +233,17 @@ else
>   fi
>   
>   AC_ARG_ENABLE(nfsdcld,
> -	[AC_HELP_STRING([--disable-nfsdcld],
> -			[disable NFSv4 clientid tracking daemon @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-nfsdcld],[disable NFSv4 clientid tracking daemon @<:@default=no@:>@])],
>   	enable_nfsdcld=$enableval,
>   	enable_nfsdcld="yes")
>   
>   AC_ARG_ENABLE(nfsdcltrack,
> -	[AC_HELP_STRING([--disable-nfsdcltrack],
> -			[disable NFSv4 clientid tracking programs @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--disable-nfsdcltrack],[disable NFSv4 clientid tracking programs @<:@default=no@:>@])],
>   	enable_nfsdcltrack=$enableval,
>   	enable_nfsdcltrack="yes")
>   
>   AC_ARG_ENABLE(nfsv4server,
> -	[AC_HELP_STRING([--enable-nfsv4server],
> -			[enable support for NFSv4 only server  @<:@default=no@:>@])],
> +	[AS_HELP_STRING([--enable-nfsv4server],[enable support for NFSv4 only server  @<:@default=no@:>@])],
>   	enable_nfsv4server=$enableval,
>   	enable_nfsv4server="no")
>   	if test "$enable_nfsv4server" = yes; then
> @@ -299,7 +277,7 @@ AC_PROG_CPP
>   AC_PROG_INSTALL
>   AC_PROG_LN_S
>   AC_PROG_MAKE_SET
> -AC_PROG_LIBTOOL
> +LT_INIT
>   AM_PROG_CC_C_O
>   
>   if test "x$cross_compiling" = "xno"; then
> @@ -313,7 +291,6 @@ AC_SUBST(CC_FOR_BUILD)
>   AC_CHECK_TOOL(AR, ar)
>   AC_CHECK_TOOL(LD, ld)
>   
> -AC_HEADER_STDC([])
>   AC_GNULIBC
>   AC_BSD_SIGNALS
>   
> @@ -553,7 +530,7 @@ AC_C_INLINE
>   AC_TYPE_OFF_T
>   AC_TYPE_PID_T
>   AC_TYPE_SIZE_T
> -AC_HEADER_TIME
> +
>   AC_STRUCT_TM
>   AC_CHECK_TYPES([struct file_handle], [], [], [[
>   		#define _GNU_SOURCE
> @@ -579,7 +556,7 @@ AC_HEADER_MAJOR
>   AC_FUNC_MEMCMP
>   #AC_FUNC_REALLOC
>   AC_FUNC_SELECT_ARGTYPES
> -AC_TYPE_SIGNAL
> +
>   AC_FUNC_STAT
>   AC_FUNC_VPRINTF
>   AC_CHECK_FUNCS([alarm atexit dup2 fdatasync ftruncate getcwd \