add libfuse3 support to fuse2fs

4 files changed, 584 insertions, 100 deletions

diff --git a/configure b/configure
index 847ed8e84..5522112f1 100755
--- a/configure
+++ b/configure
@@ -703,6 +703,8 @@ UNI_DIFF_OPTS
 SEM_INIT_LIB
 FUSE_CMT
 FUSE_LIB
+fuse3_LIBS
+fuse3_CFLAGS
 CLOCK_GETTIME_LIB
 MAGIC_LIB
 SOCKET_LIB
@@ -950,6 +952,8 @@ CPP
 PKG_CONFIG
 PKG_CONFIG_PATH
 PKG_CONFIG_LIBDIR
+fuse3_CFLAGS
+fuse3_LIBS
 CXX
 CXXFLAGS
 CCC
@@ -4634,6 +4638,8 @@ esac
 unset DATE MONTH YEAR base_ver pre_vers date_spec
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Generating configuration file for e2fsprogs version $E2FSPROGS_VERSION" >&5
 printf "%s\n" "Generating configuration file for e2fsprogs version $E2FSPROGS_VERSION" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Package version ${E2FSPROGS_PKGVER} release ${E2FSPROGS_PKGREL}" >&5
+printf "%s\n" "Package version ${E2FSPROGS_PKGVER} release ${E2FSPROGS_PKGREL}" >&6; }
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Release date is ${E2FSPROGS_MONTH}, ${E2FSPROGS_YEAR}" >&5
 printf "%s\n" "Release date is ${E2FSPROGS_MONTH}, ${E2FSPROGS_YEAR}" >&6; }
 
@@ -4642,6 +4648,7 @@ printf "%s\n" "Release date is ${E2FSPROGS_MONTH}, ${E2FSPROGS_YEAR}" >&6; }
 
 
 
+
 WITH_DIET_LIBC=
 
 # Check whether --with-diet-libc was given.
@@ -8679,7 +8686,7 @@ else $as_nop
       *-*-aix*)
         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#if defined __powerpc64__ || defined __LP64__
+#if defined __powerpc64__ || defined _ARCH_PPC64
                 int ok;
                #else
                 error fail
@@ -8970,7 +8977,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
            # be generating 64-bit code.
            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#if defined __powerpc64__ || defined __LP64__
+#if defined __powerpc64__ || defined _ARCH_PPC64
                    int ok;
                   #else
                    error fail
@@ -9077,7 +9084,7 @@ then :
 else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#if defined __ELF__ || (defined __linux__ && defined __EDG__)
+#ifdef __ELF__
         Extensible Linking Format
         #endif
 
@@ -9095,7 +9102,7 @@ rm -rf conftest*
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_elf" >&5
 printf "%s\n" "$gl_cv_elf" >&6; }
-  if test $gl_cv_elf = yes; then
+  if test $gl_cv_elf; then
     # Extract the ELF class of a file (5th byte) in decimal.
     # Cf. https://en.wikipedia.org/wiki/Executable_and_Linkable_Format#File_header
     if od -A x < /dev/null >/dev/null 2>/dev/null; then
@@ -9112,22 +9119,19 @@ printf "%s\n" "$gl_cv_elf" >&6; }
         echo
       }
     fi
-    # Use 'expr', not 'test', to compare the values of func_elfclass, because on
-    # Solaris 11 OpenIndiana and Solaris 11 OmniOS, the result is 001 or 002,
-    # not 1 or 2.
     case $HOST_CPU_C_ABI_32BIT in
       yes)
         # 32-bit ABI.
         acl_is_expected_elfclass ()
         {
-          expr "`func_elfclass | sed -e 's/[ 	]//g'`" = 1 > /dev/null
+          test "`func_elfclass | sed -e 's/[ 	]//g'`" = 1
         }
         ;;
       no)
         # 64-bit ABI.
         acl_is_expected_elfclass ()
         {
-          expr "`func_elfclass | sed -e 's/[ 	]//g'`" = 2 > /dev/null
+          test "`func_elfclass | sed -e 's/[ 	]//g'`" = 2
         }
         ;;
       *)
@@ -9657,14 +9661,7 @@ fi
                     fi
                     ;;
                   -l*)
-                                                                                                                                                                dep=`echo "X$dep" | sed -e 's/^X-l//'`
-                    if test "X$dep" != Xc \
-                       || case $host_os in
-                            linux* | gnu* | k*bsd*-gnu) false ;;
-                            *)                          true ;;
-                          esac; then
-                      names_next_round="$names_next_round $dep"
-                    fi
+                                        names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
                     ;;
                   *.la)
                                                                                 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
@@ -10026,9 +10023,8 @@ int
 main (void)
 {
 int result = 0;
-  /* Test against AIX 5.1...7.2 bug: Failures are not distinguishable from
-     successful returns.  This is even documented in
-     <https://www.ibm.com/support/knowledgecenter/ssw_aix_72/i_bostechref/iconv.html> */
+  /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
+     returns.  */
   {
     iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
     if (cd_utf8_to_88591 != (iconv_t)(-1))
@@ -10610,14 +10606,7 @@ fi
                     fi
                     ;;
                   -l*)
-                                                                                                                                                                dep=`echo "X$dep" | sed -e 's/^X-l//'`
-                    if test "X$dep" != Xc \
-                       || case $host_os in
-                            linux* | gnu* | k*bsd*-gnu) false ;;
-                            *)                          true ;;
-                          esac; then
-                      names_next_round="$names_next_round $dep"
-                    fi
+                                        names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
                     ;;
                   *.la)
                                                                                 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
@@ -13592,7 +13581,97 @@ then
 	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Disabling fuse2fs" >&5
 printf "%s\n" "Disabling fuse2fs" >&6; }
 else
-	       for ac_header in pthread.h fuse.h
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __linux__
+#include <linux/fs.h>
+#include <linux/falloc.h>
+#include <linux/xattr.h>
+#endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "Cannot find fuse2fs Linux headers.
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+	  fuse3_CFLAGS
+              C compiler flags for fuse3, overriding pkg-config
+  fuse3_LIBS  linker flags for fuse3, overriding pkg-config
+
+pkg_failed=no
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse3" >&5
+printf %s "checking for fuse3... " >&6; }
+
+if test -n "$fuse3_CFLAGS"; then
+    pkg_cv_fuse3_CFLAGS="$fuse3_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"fuse3\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "fuse3") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_fuse3_CFLAGS=`$PKG_CONFIG --cflags "fuse3" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+if test -n "$fuse3_LIBS"; then
+    pkg_cv_fuse3_LIBS="$fuse3_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"fuse3\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "fuse3") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_fuse3_LIBS=`$PKG_CONFIG --libs "fuse3" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+
+
+
+if test $pkg_failed = yes; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi
+        if test $_pkg_short_errors_supported = yes; then
+                fuse3_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "fuse3" 2>&1`
+        else
+                fuse3_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "fuse3" 2>&1`
+        fi
+        # Put the nasty error message in config.log where it belongs
+        echo "$fuse3_PKG_ERRORS" >&5
+
+
+		       for ac_header in pthread.h fuse.h
 do :
   as_ac_Header=`printf "%s\n" "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#define _FILE_OFFSET_BITS	64
@@ -13613,35 +13692,119 @@ fi
 
 done
 
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -losxfuse" >&5
+printf %s "checking for fuse_main in -losxfuse... " >&6; }
+if test ${ac_cv_lib_osxfuse_fuse_main+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-losxfuse  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#define FUSE_USE_VERSION 29
-#ifdef __linux__
-#include <linux/fs.h>
-#include <linux/falloc.h>
-#include <linux/xattr.h>
-#endif
 
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char fuse_main ();
 int
 main (void)
 {
+return fuse_main ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_osxfuse_fuse_main=yes
+else $as_nop
+  ac_cv_lib_osxfuse_fuse_main=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_osxfuse_fuse_main" >&5
+printf "%s\n" "$ac_cv_lib_osxfuse_fuse_main" >&6; }
+if test "x$ac_cv_lib_osxfuse_fuse_main" = xyes
+then :
+  FUSE_LIB=-losxfuse
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -lfuse" >&5
+printf %s "checking for fuse_main in -lfuse... " >&6; }
+if test ${ac_cv_lib_fuse_fuse_main+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lfuse  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
 
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char fuse_main ();
+int
+main (void)
+{
+return fuse_main ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_cpp "$LINENO"
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_fuse_fuse_main=yes
+else $as_nop
+  ac_cv_lib_fuse_fuse_main=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_fuse_fuse_main" >&5
+printf "%s\n" "$ac_cv_lib_fuse_fuse_main" >&6; }
+if test "x$ac_cv_lib_fuse_fuse_main" = xyes
 then :
+  FUSE_LIB=-lfuse
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "Cannot find fuse library.
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+fi
+
+
+elif test $pkg_failed = untried; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+
+		       for ac_header in pthread.h fuse.h
+do :
+  as_ac_Header=`printf "%s\n" "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#define _FILE_OFFSET_BITS	64
+#define FUSE_USE_VERSION 29
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"
+then :
+  cat >>confdefs.h <<_ACEOF
+#define `printf "%s\n" "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
 
 else $as_nop
   { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "Cannot find fuse2fs Linux headers.
+as_fn_error $? "Cannot find fuse2fs headers.
 See \`config.log' for more details" "$LINENO" 5; }
 fi
-rm -f conftest.err conftest.i conftest.$ac_ext
 
-	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -losxfuse" >&5
+done
+
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -losxfuse" >&5
 printf %s "checking for fuse_main in -losxfuse... " >&6; }
 if test ${ac_cv_lib_osxfuse_fuse_main+y}
 then :
@@ -13727,12 +13890,82 @@ fi
 
 fi
 
+
+else
+        fuse3_CFLAGS=$pkg_cv_fuse3_CFLAGS
+        fuse3_LIBS=$pkg_cv_fuse3_LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+
+		FUSE_LIB=-lfuse3
+
+fi
 	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Enabling fuse2fs" >&5
 printf "%s\n" "Enabling fuse2fs" >&6; }
 fi
 
 else $as_nop
-         for ac_header in pthread.h fuse.h
+
+pkg_failed=no
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse3" >&5
+printf %s "checking for fuse3... " >&6; }
+
+if test -n "$fuse3_CFLAGS"; then
+    pkg_cv_fuse3_CFLAGS="$fuse3_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"fuse3\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "fuse3") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_fuse3_CFLAGS=`$PKG_CONFIG --cflags "fuse3" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+if test -n "$fuse3_LIBS"; then
+    pkg_cv_fuse3_LIBS="$fuse3_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"fuse3\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "fuse3") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_fuse3_LIBS=`$PKG_CONFIG --libs "fuse3" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+
+
+
+if test $pkg_failed = yes; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi
+        if test $_pkg_short_errors_supported = yes; then
+                fuse3_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "fuse3" 2>&1`
+        else
+                fuse3_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "fuse3" 2>&1`
+        fi
+        # Put the nasty error message in config.log where it belongs
+        echo "$fuse3_PKG_ERRORS" >&5
+
+
+	       for ac_header in pthread.h fuse.h
 do :
   as_ac_Header=`printf "%s\n" "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#define _FILE_OFFSET_BITS	64
@@ -13754,9 +13987,9 @@ else $as_nop
 fi
 
 done
-if test -z "$FUSE_CMT"
-then
-	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -losxfuse" >&5
+	if test -z "$FUSE_CMT"
+	then
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -losxfuse" >&5
 printf %s "checking for fuse_main in -losxfuse... " >&6; }
 if test ${ac_cv_lib_osxfuse_fuse_main+y}
 then :
@@ -13839,6 +14072,129 @@ fi
 
 fi
 
+	fi
+
+elif test $pkg_failed = untried; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+
+	       for ac_header in pthread.h fuse.h
+do :
+  as_ac_Header=`printf "%s\n" "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#define _FILE_OFFSET_BITS	64
+#define FUSE_USE_VERSION 29
+#ifdef __linux__
+# include <linux/fs.h>
+# include <linux/falloc.h>
+# include <linux/xattr.h>
+#endif
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"
+then :
+  cat >>confdefs.h <<_ACEOF
+#define `printf "%s\n" "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+else $as_nop
+  FUSE_CMT="#"
+fi
+
+done
+	if test -z "$FUSE_CMT"
+	then
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -losxfuse" >&5
+printf %s "checking for fuse_main in -losxfuse... " >&6; }
+if test ${ac_cv_lib_osxfuse_fuse_main+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-losxfuse  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char fuse_main ();
+int
+main (void)
+{
+return fuse_main ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_osxfuse_fuse_main=yes
+else $as_nop
+  ac_cv_lib_osxfuse_fuse_main=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_osxfuse_fuse_main" >&5
+printf "%s\n" "$ac_cv_lib_osxfuse_fuse_main" >&6; }
+if test "x$ac_cv_lib_osxfuse_fuse_main" = xyes
+then :
+  FUSE_LIB=-losxfuse
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse_main in -lfuse" >&5
+printf %s "checking for fuse_main in -lfuse... " >&6; }
+if test ${ac_cv_lib_fuse_fuse_main+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lfuse  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char fuse_main ();
+int
+main (void)
+{
+return fuse_main ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_fuse_fuse_main=yes
+else $as_nop
+  ac_cv_lib_fuse_fuse_main=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_fuse_fuse_main" >&5
+printf "%s\n" "$ac_cv_lib_fuse_fuse_main" >&6; }
+if test "x$ac_cv_lib_fuse_fuse_main" = xyes
+then :
+  FUSE_LIB=-lfuse
+else $as_nop
+  FUSE_CMT="#"
+fi
+
+fi
+
+	fi
+
+else
+        fuse3_CFLAGS=$pkg_cv_fuse3_CFLAGS
+        fuse3_LIBS=$pkg_cv_fuse3_LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+
+	FUSE_LIB=-lfuse3
+
 fi
 if test -z "$FUSE_CMT"
 then
@@ -13850,6 +14206,46 @@ fi
 
 
 
+if test "$FUSE_LIB" = "-lfuse3"
+then
+	FUSE_USE_VERSION=35
+	CFLAGS="$CFLAGS $fuse3_CFLAGS"
+	LDFLAGS="$LDFLAGS $fuse3_LDFLAGS"
+	       for ac_header in pthread.h fuse.h
+do :
+  as_ac_Header=`printf "%s\n" "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "#define _FILE_OFFSET_BITS	64
+#define FUSE_USE_VERSION 35
+#ifdef __linux__
+#include <linux/fs.h>
+#include <linux/falloc.h>
+#include <linux/xattr.h>
+#endif
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"
+then :
+  cat >>confdefs.h <<_ACEOF
+#define `printf "%s\n" "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "Cannot find fuse3 fuse2fs headers.
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+done
+elif test -n "$FUSE_LIB"
+then
+	FUSE_USE_VERSION=29
+fi
+if test -n "$FUSE_USE_VERSION"
+then
+
+printf "%s\n" "#define FUSE_USE_VERSION $FUSE_USE_VERSION" >>confdefs.h
+
+fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for optreset" >&5
 printf %s "checking for optreset... " >&6; }
 if test ${ac_cv_have_optreset+y}
@@ -14804,11 +15200,11 @@ if test x$ac_prog_cxx_stdcxx = xno
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CXX option to enable C++11 features" >&5
 printf %s "checking for $CXX option to enable C++11 features... " >&6; }
-if test ${ac_cv_prog_cxx_11+y}
+if test ${ac_cv_prog_cxx_cxx11+y}
 then :
   printf %s "(cached) " >&6
 else $as_nop
-  ac_cv_prog_cxx_11=no
+  ac_cv_prog_cxx_cxx11=no
 ac_save_CXX=$CXX
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14850,11 +15246,11 @@ if test x$ac_prog_cxx_stdcxx = xno
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CXX option to enable C++98 features" >&5
 printf %s "checking for $CXX option to enable C++98 features... " >&6; }
-if test ${ac_cv_prog_cxx_98+y}
+if test ${ac_cv_prog_cxx_cxx98+y}
 then :
   printf %s "(cached) " >&6
 else $as_nop
-  ac_cv_prog_cxx_98=no
+  ac_cv_prog_cxx_cxx98=no
 ac_save_CXX=$CXX
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -15194,7 +15590,7 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
@@ -15203,25 +15599,25 @@ else
         _pkg_short_errors_supported=no
 fi
         if test $_pkg_short_errors_supported = yes; then
-	        udev_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "udev" 2>&1`
+                udev_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "udev" 2>&1`
         else
-	        udev_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "udev" 2>&1`
+                udev_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "udev" 2>&1`
         fi
-	# Put the nasty error message in config.log where it belongs
-	echo "$udev_PKG_ERRORS" >&5
+        # Put the nasty error message in config.log where it belongs
+        echo "$udev_PKG_ERRORS" >&5
 
 
 			with_udev_rules_dir=""
 
 elif test $pkg_failed = untried; then
-     	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
 
 			with_udev_rules_dir=""
 
 else
-	udev_CFLAGS=$pkg_cv_udev_CFLAGS
-	udev_LIBS=$pkg_cv_udev_LIBS
+        udev_CFLAGS=$pkg_cv_udev_CFLAGS
+        udev_LIBS=$pkg_cv_udev_LIBS
         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
 
@@ -15363,7 +15759,7 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
@@ -15372,25 +15768,25 @@ else
         _pkg_short_errors_supported=no
 fi
         if test $_pkg_short_errors_supported = yes; then
-	        systemd_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "systemd" 2>&1`
+                systemd_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "systemd" 2>&1`
         else
-	        systemd_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "systemd" 2>&1`
+                systemd_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "systemd" 2>&1`
         fi
-	# Put the nasty error message in config.log where it belongs
-	echo "$systemd_PKG_ERRORS" >&5
+        # Put the nasty error message in config.log where it belongs
+        echo "$systemd_PKG_ERRORS" >&5
 
 
 			with_systemd_unit_dir=""
 
 elif test $pkg_failed = untried; then
-     	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
 
 			with_systemd_unit_dir=""
 
 else
-	systemd_CFLAGS=$pkg_cv_systemd_CFLAGS
-	systemd_LIBS=$pkg_cv_systemd_LIBS
+        systemd_CFLAGS=$pkg_cv_systemd_CFLAGS
+        systemd_LIBS=$pkg_cv_systemd_LIBS
         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
 
@@ -17057,9 +17453,7 @@ printf "%s\n" "$as_me: executing $ac_file commands" >&6;}
                 #      presentlang can be used as a fallback for messages
                 #      which are not translated in the desiredlang catalog).
                 case "$desiredlang" in
-                  "$presentlang" | "$presentlang"_* | "$presentlang".* | "$presentlang"@*)
-                    useit=yes
-                    ;;
+                  "$presentlang"*) useit=yes;;
                 esac
               done
               if test $useit = yes; then
diff --git a/configure.ac b/configure.ac
index 371e2bf1c..3cdf4c5eb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1303,7 +1303,7 @@ dnl
 AC_CHECK_LIB(rt, clock_gettime, [CLOCK_GETTIME_LIB=-lrt])
 AC_SUBST(CLOCK_GETTIME_LIB)
 dnl
-dnl Check to see if the FUSE library is -lfuse or -losxfuse
+dnl Check to see if the FUSE library is -lfuse3, -losxfuse, or -lfuse
 dnl
 FUSE_CMT=
 FUSE_LIB=
@@ -1315,27 +1315,35 @@ then
 	FUSE_CMT="#"
 	AC_MSG_RESULT([Disabling fuse2fs])
 else
-	AC_CHECK_HEADERS([pthread.h fuse.h], [],
-[AC_MSG_FAILURE([Cannot find fuse2fs headers.])],
-[#define _FILE_OFFSET_BITS	64
-#define FUSE_USE_VERSION 29])
-
 	AC_PREPROC_IFELSE(
-[AC_LANG_PROGRAM([[#define FUSE_USE_VERSION 29
-#ifdef __linux__
+[AC_LANG_PROGRAM([[#ifdef __linux__
 #include <linux/fs.h>
 #include <linux/falloc.h>
 #include <linux/xattr.h>
 #endif
 ]], [])], [], [AC_MSG_FAILURE([Cannot find fuse2fs Linux headers.])])
 
-	AC_CHECK_LIB(osxfuse, fuse_main, [FUSE_LIB=-losxfuse],
-		[AC_CHECK_LIB(fuse, fuse_main, [FUSE_LIB=-lfuse],
-			      [AC_MSG_FAILURE([Cannot find fuse library.])])])
+	PKG_CHECK_MODULES([fuse3], [fuse3],
+	  [
+		FUSE_LIB=-lfuse3
+	  ], [
+		AC_CHECK_HEADERS([pthread.h fuse.h], [],
+			[AC_MSG_FAILURE([Cannot find fuse2fs headers.])],
+[#define _FILE_OFFSET_BITS	64
+#define FUSE_USE_VERSION 29])
+
+		AC_CHECK_LIB(osxfuse, fuse_main, [FUSE_LIB=-losxfuse],
+			[AC_CHECK_LIB(fuse, fuse_main, [FUSE_LIB=-lfuse],
+				[AC_MSG_FAILURE([Cannot find fuse library.])])])
+	  ])
 	AC_MSG_RESULT([Enabling fuse2fs])
 fi
 ,
-AC_CHECK_HEADERS([pthread.h fuse.h], [], [FUSE_CMT="#"],
+PKG_CHECK_MODULES([fuse3], [fuse3],
+  [
+	FUSE_LIB=-lfuse3
+  ], [
+	AC_CHECK_HEADERS([pthread.h fuse.h], [], [FUSE_CMT="#"], 
 [#define _FILE_OFFSET_BITS	64
 #define FUSE_USE_VERSION 29
 #ifdef __linux__
@@ -1343,11 +1351,13 @@ AC_CHECK_HEADERS([pthread.h fuse.h], [], [FUSE_CMT="#"],
 # include <linux/falloc.h>
 # include <linux/xattr.h>
 #endif])
-if test -z "$FUSE_CMT"
-then
-	AC_CHECK_LIB(osxfuse, fuse_main, [FUSE_LIB=-losxfuse],
-[AC_CHECK_LIB(fuse, fuse_main, [FUSE_LIB=-lfuse], [FUSE_CMT="#"])])
-fi
+	if test -z "$FUSE_CMT"
+	then
+		AC_CHECK_LIB(osxfuse, fuse_main, [FUSE_LIB=-losxfuse],
+			[AC_CHECK_LIB(fuse, fuse_main, [FUSE_LIB=-lfuse],
+				[FUSE_CMT="#"])])
+	fi
+  ])
 if test -z "$FUSE_CMT"
 then
 	AC_MSG_RESULT([Enabling fuse2fs by default.])
@@ -1355,6 +1365,29 @@ fi
 )
 AC_SUBST(FUSE_LIB)
 AC_SUBST(FUSE_CMT)
+if test "$FUSE_LIB" = "-lfuse3"
+then
+	FUSE_USE_VERSION=35
+	CFLAGS="$CFLAGS $fuse3_CFLAGS"
+	LDFLAGS="$LDFLAGS $fuse3_LDFLAGS"
+	AC_CHECK_HEADERS([pthread.h fuse.h], [],
+		[AC_MSG_FAILURE([Cannot find fuse3 fuse2fs headers.])],
+[#define _FILE_OFFSET_BITS	64
+#define FUSE_USE_VERSION 35
+#ifdef __linux__
+#include <linux/fs.h>
+#include <linux/falloc.h>
+#include <linux/xattr.h>
+#endif])
+elif test -n "$FUSE_LIB"
+then
+	FUSE_USE_VERSION=29
+fi
+if test -n "$FUSE_USE_VERSION"
+then
+	AC_DEFINE_UNQUOTED(FUSE_USE_VERSION, $FUSE_USE_VERSION,
+		[Define to the version of FUSE to use])
+fi
 dnl
 dnl See if optreset exists
 dnl
diff --git a/lib/config.h.in b/lib/config.h.in
index 076c38235..f39eeac35 100644
--- a/lib/config.h.in
+++ b/lib/config.h.in
@@ -37,6 +37,9 @@
    language is requested. */
 #undef ENABLE_NLS
 
+/* Define to the version of FUSE to use */
+#undef FUSE_USE_VERSION
+
 /* Define to 1 if you have the `add_key' function. */
 #undef HAVE_ADD_KEY
 
diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index 0dc77eadc..b0b2f44f0 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -9,7 +9,6 @@
  * %End-Header%
  */
 #define _FILE_OFFSET_BITS 64
-#define FUSE_USE_VERSION 29
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
@@ -19,12 +18,9 @@
 # include <linux/fs.h>
 # include <linux/falloc.h>
 # include <linux/xattr.h>
-# define FUSE_PLATFORM_OPTS	",big_writes"
 # ifdef HAVE_SYS_ACL_H
 #  define TRANSLATE_LINUX_ACLS
 # endif
-#else
-# define FUSE_PLATFORM_OPTS	""
 #endif
 #ifdef TRANSLATE_LINUX_ACLS
 # include <sys/acl.h>
@@ -35,6 +31,15 @@
 #include <inttypes.h>
 #include "ext2fs/ext2fs.h"
 #include "ext2fs/ext2_fs.h"
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+# define FUSE_PLATFORM_OPTS	""
+#else
+# ifdef __linux__
+#  define FUSE_PLATFORM_OPTS	",use_ino,big_writes"
+# else
+#  define FUSE_PLATFORM_OPTS	",use_ino"
+# endif
+#endif
 
 #include "../version.h"
 
@@ -728,7 +733,11 @@ static void op_destroy(void *p EXT2FS_ATTR((unused)))
 	}
 }
 
-static void *op_init(struct fuse_conn_info *conn)
+static void *op_init(struct fuse_conn_info *conn
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, struct fuse_config *cfg
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -798,7 +807,11 @@ static int stat_inode(ext2_filsys fs, ext2_ino_t ino, struct stat *statbuf)
 	return ret;
 }
 
-static int op_getattr(const char *path, struct stat *statbuf)
+static int op_getattr(const char *path, struct stat *statbuf
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, struct fuse_file_info *fi
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -1542,7 +1555,11 @@ static int update_dotdot_helper(ext2_ino_t dir EXT2FS_ATTR((unused)),
 	return 0;
 }
 
-static int op_rename(const char *from, const char *to)
+static int op_rename(const char *from, const char *to
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, unsigned int flags
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -1871,7 +1888,11 @@ out:
 	return ret;
 }
 
-static int op_chmod(const char *path, mode_t mode)
+static int op_chmod(const char *path, mode_t mode
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, struct fuse_file_info *fi
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -1930,7 +1951,11 @@ out:
 	return ret;
 }
 
-static int op_chown(const char *path, uid_t owner, gid_t group)
+static int op_chown(const char *path, uid_t owner, gid_t group
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, struct fuse_file_info *fi
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -2000,7 +2025,11 @@ out:
 	return ret;
 }
 
-static int op_truncate(const char *path, off_t len)
+static int op_truncate(const char *path, off_t len
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, struct fuse_file_info *fi
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -2753,7 +2782,11 @@ static int op_readdir_iter(ext2_ino_t dir EXT2FS_ATTR((unused)),
 
 	memcpy(namebuf, dirent->name, dirent->name_len & 0xFF);
 	namebuf[dirent->name_len & 0xFF] = 0;
-	ret = i->func(i->buf, namebuf, NULL, 0);
+	ret = i->func(i->buf, namebuf, NULL, 0
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, 0
+#endif
+			);
 	if (ret)
 		return DIRENT_ABORT;
 
@@ -2763,7 +2796,11 @@ static int op_readdir_iter(ext2_ino_t dir EXT2FS_ATTR((unused)),
 static int op_readdir(const char *path EXT2FS_ATTR((unused)),
 		      void *buf, fuse_fill_dir_t fill_func,
 		      off_t offset EXT2FS_ATTR((unused)),
-		      struct fuse_file_info *fp)
+		      struct fuse_file_info *fp
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, enum fuse_readdir_flags flags
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -2951,6 +2988,7 @@ out:
 	return ret;
 }
 
+#if FUSE_VERSION < FUSE_MAKE_VERSION(3, 0)
 static int op_ftruncate(const char *path EXT2FS_ATTR((unused)),
 			off_t len, struct fuse_file_info *fp)
 {
@@ -3024,8 +3062,13 @@ static int op_fgetattr(const char *path EXT2FS_ATTR((unused)),
 
 	return ret;
 }
+#endif /* FUSE_VERSION < FUSE_MAKE_VERSION(3, 0) */
 
-static int op_utimens(const char *path, const struct timespec ctv[2])
+static int op_utimens(const char *path, const struct timespec ctv[2]
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+			, struct fuse_file_info *fi
+#endif
+			)
 {
 	struct fuse_context *ctxt = fuse_get_context();
 	struct fuse2fs *ff = (struct fuse2fs *)ctxt->private_data;
@@ -3259,7 +3302,12 @@ static int ioctl_fitrim(ext2_filsys fs, struct fuse2fs_file_handle *fh,
 #endif /* FITRIM */
 
 #if FUSE_VERSION >= FUSE_MAKE_VERSION(2, 8)
-static int op_ioctl(const char *path EXT2FS_ATTR((unused)), int cmd,
+static int op_ioctl(const char *path EXT2FS_ATTR((unused)),
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+		    unsigned int cmd,
+#else
+		    int cmd,
+#endif
 		    void *arg EXT2FS_ATTR((unused)),
 		    struct fuse_file_info *fp,
 		    unsigned int flags EXT2FS_ATTR((unused)), void *data)
@@ -3603,10 +3651,12 @@ static struct fuse_operations fs_ops = {
 	.fsyncdir = op_fsync,
 	.access = op_access,
 	.create = op_create,
+#if FUSE_VERSION < FUSE_MAKE_VERSION(3, 0)
 	.ftruncate = op_ftruncate,
 	.fgetattr = op_fgetattr,
+#endif
 	.utimens = op_utimens,
-#if FUSE_VERSION >= FUSE_MAKE_VERSION(2, 9)
+#if (FUSE_VERSION >= FUSE_MAKE_VERSION(2, 9)) && (FUSE_VERSION < FUSE_MAKE_VERSION(3, 0))
 # if defined(UTIME_NOW) || defined(UTIME_OMIT)
 	.flag_utime_omit_ok = 1,
 # endif
@@ -3618,10 +3668,14 @@ static struct fuse_operations fs_ops = {
 #endif
 #if FUSE_VERSION >= FUSE_MAKE_VERSION(2, 8)
 	.ioctl = op_ioctl,
+#if FUSE_VERSION < FUSE_MAKE_VERSION(3, 0)
 	.flag_nullpath_ok = 1,
 #endif
+#endif
 #if FUSE_VERSION >= FUSE_MAKE_VERSION(2, 9)
+#if FUSE_VERSION < FUSE_MAKE_VERSION(3, 0)
 	.flag_nopath = 1,
+#endif
 # ifdef SUPPORT_FALLOCATE
 	.fallocate = op_fallocate,
 # endif
@@ -3860,7 +3914,7 @@ int main(int argc, char *argv[])
 	get_random_bytes(&fctx.next_generation, sizeof(unsigned int));
 
 	/* Set up default fuse parameters */
-	snprintf(extra_args, BUFSIZ, "-okernel_cache,subtype=ext4,use_ino,"
+	snprintf(extra_args, BUFSIZ, "-okernel_cache,subtype=ext4,"
 		 "fsname=%s,attr_timeout=0" FUSE_PLATFORM_OPTS,
 		 fctx.device);
 	if (fctx.no_default_opts == 0)