From 6670495a39c98eca587a8e2efc1bd1c7fd33b5a2 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Fri, 25 Jun 1999 15:30:33 +0000
Subject: [PATCH] ChangeLog, configure.in, configure:   configure.in: Check for
 the presence of i_generation field versus   	i_version in the ext2_inode to
 support compiling e2fsprogs in Linux   	2.3.

---
 ChangeLog    |  6 ++++++
 configure    | 38 +++++++++++++++++++++++++++++++++++---
 configure.in | 13 +++++++++++++
 3 files changed, 54 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 02028a2..06da3b5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+1999-06-23    <tytso@valinux.com>
+
+	* configure.in: Check for the presence of i_generation field
+		versus i_version in the ext2_inode to support compiling
+		e2fsprogs in Linux 2.3.
+
 1999-04-17    <tytso@rsts-11.mit.edu>
 
 	* MCONFIG.in: Define man1dir, man3dir, and man8dir in terms of
diff --git a/configure b/configure
index 6cdaa13..ab95828 100644
--- a/configure
+++ b/configure
@@ -2441,6 +2441,38 @@ if test "$e2fsprogs_cv_ioctl_ext2" = yes; then
 EOF
 
 fi
+echo $ac_n "checking whether struct ext2_inode has an i_version field""... $ac_c" 1>&6
+echo "configure:2446: checking whether struct ext2_inode has an i_version field" >&5
+if eval "test \"`echo '$''{'e2fsprogs_cv_ext2_inode_version'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2451 "configure"
+#include "confdefs.h"
+#include <linux/ext2_fs.h>
+int main() {
+struct ext2_inode e2i; e2i.i_version=0;
+; return 0; }
+EOF
+if { (eval echo configure:2458: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  e2fsprogs_cv_ext2_inode_version=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  e2fsprogs_cv_ext2_inode_version=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$e2fsprogs_cv_ext2_inode_version" 1>&6
+if test "$e2fsprogs_cv_ext2_inode_version" = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_EXT2_INODE_VERSION 1
+EOF
+
+fi
 case "$host_os" in
 linux*)
 	if test "$prefix" = NONE -a "$root_prefix" = NONE ; then
@@ -2466,20 +2498,20 @@ if test "$root_prefix" = NONE ; then
 fi
 
 echo $ac_n "checking whether linker accepts -static""... $ac_c" 1>&6
-echo "configure:2470: checking whether linker accepts -static" >&5
+echo "configure:2502: checking whether linker accepts -static" >&5
 if eval "test \"`echo '$''{'ac_cv_e2fsprogs_use_static'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   SAVE_LDFLAGS=$LDFLAGS; LDFLAGS="$LDFLAGS -static"
 cat > conftest.$ac_ext <<EOF
-#line 2476 "configure"
+#line 2508 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 int main() {
 fflush(stdout);
 ; return 0; }
 EOF
-if { (eval echo configure:2483: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2515: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_e2fsprogs_use_static=yes
 else
diff --git a/configure.in b/configure.in
index 513b05c..406a28e 100644
--- a/configure.in
+++ b/configure.in
@@ -452,6 +452,19 @@ if test "$e2fsprogs_cv_ioctl_ext2" = yes; then
   AC_DEFINE(HAVE_EXT2_IOCTLS)
 fi
 dnl
+dnl Check if ext2_inode has i_version (changed to i_generation in Linux 2.3)
+dnl
+AC_MSG_CHECKING(whether struct ext2_inode has an i_version field)
+AC_CACHE_VAL(e2fsprogs_cv_ext2_inode_version,
+	AC_TRY_COMPILE([#include <linux/ext2_fs.h>],
+		[struct ext2_inode e2i; e2i.i_version=0;],
+		[e2fsprogs_cv_ext2_inode_version=yes],
+		[e2fsprogs_cv_ext2_inode_version=no]))
+AC_MSG_RESULT($e2fsprogs_cv_ext2_inode_version)
+if test "$e2fsprogs_cv_ext2_inode_version" = yes; then
+  AC_DEFINE(HAVE_EXT2_INODE_VERSION)
+fi
+dnl
 dnl Linux places root files in the / by default
 dnl
 case "$host_os" in
-- 
1.8.3.1