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New Ext3cow version with some bugs resolved. Updated ext3cow kernel-patch, e3cfsprogs and ext3cow-tools

svn path=/nixpkgs/trunk/; revision=11027
This commit is contained in:
Wouter den Breejen 2008-03-09 20:06:42 +00:00
parent bad0d45562
commit f9998954b8
4 changed files with 316 additions and 18712 deletions

View file

@ -7,8 +7,8 @@ stdenv.mkDerivation {
patches = [ ./e3cfsprogs-1.39_bin_links.patch ./e3cfsprogs-1.39_etc.patch ];
src = fetchurl {
url = http://www.ext3cow.com/Download_files/e3cfsprogs-1.39.tgz;
sha256 = "26f535007a497d91c85d337ac67d62d42e3c8fde2ee02c5cb6b6e3e884a5d58f";
url = http://ext3cow.com/e3cfsprogs/e3cfsprogs-1.39.tgz;
sha256 = "8dd3de546aeb1ae42fb05409aeb724a145fe9aa1dbe1115441c2297c9d48cf31";
};
configureFlags =

View file

@ -5,7 +5,7 @@ stdenv.mkDerivation {
builder = ./builder.sh;
src = fetchurl {
url = http://www.ext3cow.com/Download_files/ext3cow-tools-1.tgz;
url = http://ext3cow.com/tools/ext3cow-tools.tgz;
sha256 = "78f55b19c8eeaa7b8abde63c7d6547b1ac0421a46d826a8d41c049719a3081f2";
};

View file

@ -1,159 +1,6 @@
diff -ruN linux-2.6.20.3/fs/Kconfig linux-2.6.20.3-ext3cow/fs/Kconfig
--- linux-2.6.20.3/fs/Kconfig 2007-03-13 14:27:08.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/Kconfig 2007-04-07 14:23:46.000000000 -0400
@@ -136,6 +136,77 @@
If you are not using a security module that requires using
extended attributes for file security labels, say N.
+
+
+config EXT3COW_FS
+ tristate "Ext3cow journalling and versioning file system support"
+ select JBD
+ help
+ This is the journalling version of the Second extended file system
+ (often called ext3), the de facto standard Linux file system
+ (method to organize files on a storage device) for hard disks.
+
+ The journalling code included in this driver means you do not have
+ to run e2fsck (file system checker) on your file systems after a
+ crash. The journal keeps track of any changes that were being made
+ at the time the system crashed, and can ensure that your file system
+ is consistent without the need for a lengthy check.
+
+ Other than adding the journal to the file system, the on-disk format
+ of ext3 is identical to ext2. It is possible to freely switch
+ between using the ext3 driver and the ext2 driver, as long as the
+ file system has been cleanly unmounted, or e2fsck is run on the file
+ system.
+
+ To add a journal on an existing ext2 file system or change the
+ behavior of ext3 file systems, you can use the tune2fs utility ("man
+ tune2fs"). To modify attributes of files and directories on ext3
+ file systems, use chattr ("man chattr"). You need to be using
+ e2fsprogs version 1.20 or later in order to create ext3 journals
+ (available at <http://sourceforge.net/projects/e2fsprogs/>).
+
+ To compile this file system support as a module, choose M here: the
+ module will be called ext3.
+
+config EXT3COW_FS_XATTR
+ bool "Ext3cow extended attributes"
+ depends on EXT3COW_FS
+ default y
+ help
+ Extended attributes are name:value pairs associated with inodes by
+ the kernel or by users (see the attr(5) manual page, or visit
+ <http://acl.bestbits.at/> for details).
+
+ If unsure, say N.
+
+ You need this for POSIX ACL support on ext3cow.
+
+config EXT3COW_FS_POSIX_ACL
+ bool "Ext3cow POSIX Access Control Lists"
+ depends on EXT3COW_FS_XATTR
+ select FS_POSIX_ACL
+ help
+ Posix Access Control Lists (ACLs) support permissions for users and
+ groups beyond the owner/group/world scheme.
+
+ To learn more about Access Control Lists, visit the Posix ACLs for
+ Linux website <http://acl.bestbits.at/>.
+
+ If you don't know what Access Control Lists are, say N
+
+config EXT3COW_FS_SECURITY
+ bool "Ext3cow Security Labels"
+ depends on EXT3COW_FS_XATTR
+ help
+ Security labels support alternative access control models
+ implemented by security modules like SELinux. This option
+ enables an extended attribute handler for file security
+ labels in the ext3cow filesystem.
+
+ If you are not using a security module that requires using
+ extended attributes for file security labels, say N.
+
+
config EXT4DEV_FS
tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)"
depends on EXPERIMENTAL
@@ -205,23 +276,23 @@
tristate
help
This is a generic journalling layer for block devices. It is
- currently used by the ext3 and OCFS2 file systems, but it could
+ currently used by the ext3, ext3cow and OCFS2 file systems, but it could
also be used to add journal support to other file systems or block
devices such as RAID or LVM.
- If you are using the ext3 or OCFS2 file systems, you need to
+ If you are using the ext3, ext3cow or OCFS2 file systems, you need to
say Y here. If you are not using ext3 OCFS2 then you will probably
want to say N.
To compile this device as a module, choose M here: the module will be
- called jbd. If you are compiling ext3 or OCFS2 into the kernel,
+ called jbd. If you are compiling ext3, ext3cow or OCFS2 into the kernel,
you cannot compile this code as a module.
config JBD_DEBUG
bool "JBD (ext3) debugging support"
depends on JBD
help
- If you are using the ext3 journaled file system (or potentially any
+ If you are using the ext3 or ext3cow journaled file system (or potentially any
other file system/device using JBD), this option allows you to
enable debugging output while the system is running, in order to
help track down any problems you are having. By default the
@@ -266,11 +337,12 @@
"echo 0 > /proc/sys/fs/jbd2-debug".
config FS_MBCACHE
-# Meta block cache for Extended Attributes (ext2/ext3/ext4)
+# Meta block cache for Extended Attributes (ext2/ext3(cow)/ext4)
tristate
- depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
- default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
- default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
+ depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT3COW_FS_XATTR || EXT4DEV_FS_XATTR
+ default y if EXT2_FS=y || EXT3_FS=y || EXT3COW_FS=y || EXT4DEV_FS=y
+ default m if EXT2_FS=m || EXT3_FS=m || EXT3COW_FS=m || EXT4DEV_FS=m
+
config REISERFS_FS
tristate "Reiserfs support"
diff -ruN linux-2.6.20.3/fs/Makefile linux-2.6.20.3-ext3cow/fs/Makefile
--- linux-2.6.20.3/fs/Makefile 2007-03-13 14:27:08.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/Makefile 2007-04-07 14:23:46.000000000 -0400
@@ -63,6 +63,7 @@
# Do not add any filesystems before this line
obj-$(CONFIG_REISERFS_FS) += reiserfs/
obj-$(CONFIG_EXT3_FS) += ext3/ # Before ext2 so root fs can be ext3
+obj-$(CONFIG_EXT3COW_FS) += ext3cow/ # Before ext2 so root fs can be ext3
obj-$(CONFIG_EXT4DEV_FS) += ext4/ # Before ext2 so root fs can be ext4dev
obj-$(CONFIG_JBD) += jbd/
obj-$(CONFIG_JBD2) += jbd2/
diff -ruN linux-2.6.20.3/fs/ext3cow/Makefile linux-2.6.20.3-ext3cow/fs/ext3cow/Makefile
--- linux-2.6.20.3/fs/ext3cow/Makefile 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/Makefile 2007-04-07 14:23:50.000000000 -0400
@@ -0,0 +1,12 @@
+#
+# Makefile for the linux ext3cow-filesystem routines.
+#
+
+obj-$(CONFIG_EXT3COW_FS) += ext3cow.o
+
+ext3cow-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
+ ioctl.o namei.o super.o symlink.o hash.o resize.o ext3cow_jbd.o
+
+ext3cow-$(CONFIG_EXT3COW_FS_XATTR) += xattr.o xattr_user.o xattr_trusted.o
+ext3cow-$(CONFIG_EXT3COW_FS_POSIX_ACL) += acl.o
+ext3cow-$(CONFIG_EXT3COW_FS_SECURITY) += xattr_security.o
diff -ruN linux-2.6.20.3/fs/ext3cow/acl.c linux-2.6.20.3-ext3cow/fs/ext3cow/acl.c
--- linux-2.6.20.3/fs/ext3cow/acl.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/acl.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/acl.c 2008-03-09 11:14:49.000000000 -0400
@@ -0,0 +1,551 @@
+/*
+ * linux/fs/ext3cow/acl.c
@ -708,7 +555,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/acl.c linux-2.6.20.3-ext3cow/fs/ext3cow/acl.
+};
diff -ruN linux-2.6.20.3/fs/ext3cow/acl.h linux-2.6.20.3-ext3cow/fs/ext3cow/acl.h
--- linux-2.6.20.3/fs/ext3cow/acl.h 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/acl.h 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/acl.h 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,81 @@
+/*
+ File: fs/ext3cow/acl.h
@ -793,7 +640,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/acl.h linux-2.6.20.3-ext3cow/fs/ext3cow/acl.
+
diff -ruN linux-2.6.20.3/fs/ext3cow/balloc.c linux-2.6.20.3-ext3cow/fs/ext3cow/balloc.c
--- linux-2.6.20.3/fs/ext3cow/balloc.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/balloc.c 2007-04-14 11:40:48.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/balloc.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,1823 @@
+/*
+ * linux/fs/ext3cow/balloc.c
@ -2620,7 +2467,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/balloc.c linux-2.6.20.3-ext3cow/fs/ext3cow/b
+}
diff -ruN linux-2.6.20.3/fs/ext3cow/bitmap.c linux-2.6.20.3-ext3cow/fs/ext3cow/bitmap.c
--- linux-2.6.20.3/fs/ext3cow/bitmap.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/bitmap.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/bitmap.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,32 @@
+/*
+ * linux/fs/ext3/bitmap.c
@ -2654,9 +2501,26 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/bitmap.c linux-2.6.20.3-ext3cow/fs/ext3cow/b
+
+#endif /* EXT3COWFS_DEBUG */
+
diff -ruN linux-2.6.20.3/fs/ext3cow/CHANGELOG linux-2.6.20.3-ext3cow/fs/ext3cow/CHANGELOG
--- linux-2.6.20.3/fs/ext3cow/CHANGELOG 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/CHANGELOG 2008-03-09 11:27:12.000000000 -0400
@@ -0,0 +1,12 @@
+3-9-08
+- Fixed a bug that resulted in the first block in a newly allocated indirect block to be allocated over and over again.
+- Fixed a bug that resulted in COW bitmaps not to be reset after truncate.
+- Bug e2fsprogs that caused aborting journal fixed.
+
+6-20-97
+- Finished the rollback code for inode chains in case of error.
+
+6-18-07
+- Added support for 32-bit uid's and gid's back in again
+- Took out support for block fragmentation
+- Hopefully fixed the non-sticking uid/gid bug.
\ No newline at end of file
diff -ruN linux-2.6.20.3/fs/ext3cow/dir.c linux-2.6.20.3-ext3cow/fs/ext3cow/dir.c
--- linux-2.6.20.3/fs/ext3cow/dir.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/dir.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/dir.c 2008-03-09 11:14:49.000000000 -0400
@@ -0,0 +1,732 @@
+/*
+ * linux/fs/ext3cow/dir.c
@ -2769,7 +2633,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/dir.c linux-2.6.20.3-ext3cow/fs/ext3cow/dir.
+ * of recovering data when there's a bad sector
+ */
+ if (!bh) {
+ ext3cow_error (sb, "ext3cow_readdir",
+ ext3cow_error (sb, "ext3cow_versions",
+ "directory #%lu contains a hole at offset %lu",
+ dir->i_ino, (unsigned long)filp->f_pos);
+ /* corrupt size? Maybe no more blocks to read */
@ -2808,7 +2672,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/dir.c linux-2.6.20.3-ext3cow/fs/ext3cow/dir.
+ while (!error && filp->f_pos < dir->i_size
+ && offset < sb->s_blocksize) {
+ de = (struct ext3cow_dir_entry_2 *) (bh->b_data + offset);
+ if (!ext3cow_check_dir_entry ("ext3cow_readdir", dir, de,
+ if (!ext3cow_check_dir_entry ("ext3cow_readversions", dir, de,
+ bh, offset)) {
+ /* On error, skip the f_pos to the
+ next block. */
@ -3392,7 +3256,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/dir.c linux-2.6.20.3-ext3cow/fs/ext3cow/dir.
+#endif
diff -ruN linux-2.6.20.3/fs/ext3cow/ext3cow_jbd.c linux-2.6.20.3-ext3cow/fs/ext3cow/ext3cow_jbd.c
--- linux-2.6.20.3/fs/ext3cow/ext3cow_jbd.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/ext3cow_jbd.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/ext3cow_jbd.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,59 @@
+/*
+ * Interface between ext3cow and JBD
@ -3455,7 +3319,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/ext3cow_jbd.c linux-2.6.20.3-ext3cow/fs/ext3
+}
diff -ruN linux-2.6.20.3/fs/ext3cow/file.c linux-2.6.20.3-ext3cow/fs/ext3cow/file.c
--- linux-2.6.20.3/fs/ext3cow/file.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/file.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/file.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,147 @@
+/*
+ * linux/fs/ext3cow/file.c
@ -3606,7 +3470,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/file.c linux-2.6.20.3-ext3cow/fs/ext3cow/fil
+
diff -ruN linux-2.6.20.3/fs/ext3cow/fsync.c linux-2.6.20.3-ext3cow/fs/ext3cow/fsync.c
--- linux-2.6.20.3/fs/ext3cow/fsync.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/fsync.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/fsync.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,88 @@
+/*
+ * linux/fs/ext3cow/fsync.c
@ -3698,7 +3562,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/fsync.c linux-2.6.20.3-ext3cow/fs/ext3cow/fs
+}
diff -ruN linux-2.6.20.3/fs/ext3cow/hash.c linux-2.6.20.3-ext3cow/fs/ext3cow/hash.c
--- linux-2.6.20.3/fs/ext3cow/hash.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/hash.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/hash.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,152 @@
+/*
+ * linux/fs/ext3cow/hash.c
@ -3854,8 +3718,8 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/hash.c linux-2.6.20.3-ext3cow/fs/ext3cow/has
+}
diff -ruN linux-2.6.20.3/fs/ext3cow/ialloc.c linux-2.6.20.3-ext3cow/fs/ext3cow/ialloc.c
--- linux-2.6.20.3/fs/ext3cow/ialloc.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/ialloc.c 2007-04-07 14:23:50.000000000 -0400
@@ -0,0 +1,763 @@
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/ialloc.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,764 @@
+/*
+ * linux/fs/ext3cow/ialloc.c
+ *
@ -4436,9 +4300,10 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/ialloc.c linux-2.6.20.3-ext3cow/fs/ext3cow/i
+ if (!S_ISDIR(mode))
+ ei->i_flags &= ~EXT3COW_DIRSYNC_FL;
+#ifdef EXT3COW_FRAGMENTS
+ ei->i_faddr = 0;
+ ei->i_frag_no = 0;
+ ei->i_frag_size = 0;
+ /* Taken out for versioning -znjp */
+ //ei->i_faddr = 0;
+ //ei->i_frag_no = 0;
+ //ei->i_frag_size = 0;
+#endif
+ ei->i_file_acl = 0;
+ ei->i_dir_acl = 0;
@ -4621,8 +4486,8 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/ialloc.c linux-2.6.20.3-ext3cow/fs/ext3cow/i
+
diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/inode.c
--- linux-2.6.20.3/fs/ext3cow/inode.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/inode.c 2007-04-17 11:34:02.000000000 -0400
@@ -0,0 +1,3474 @@
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/inode.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,3502 @@
+/*
+ * linux/fs/ext3cow/inode.c
+ *
@ -5012,25 +4877,28 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+{
+ struct super_block *sb = inode->i_sb;
+ Indirect *p = chain;
+ struct buffer_head *bh;
+ u32* bitmap_w;
+ struct buffer_head *bh = NULL;
+ u32 *bitmap_w = NULL;
+ int ptrs = EXT3COW_ADDR_PER_BLOCK(inode->i_sb);
+ int nbitsperword = (sizeof(u32) * 8);
+
+ *err = 0;
+ *cow = 0;
+
+
+ /* i_data is not going away, no lock needed */
+ add_chain (chain, NULL, EXT3COW_I(inode)->i_data + *offsets);
+ if (!p->key){
+ /* Set the bitmap on allocation - znjp */
+ if(create)
+ if(create){
+ EXT3COW_I(inode)->i_cow_bitmap |= (1UL << *offsets);
+ }
+ goto no_block;
+ }
+
+ /* Are we COWing any direct blocks? -znjp */
+ /* Are we writing and COWing any direct blocks? -znjp */
+ if(create && !(EXT3COW_I(inode)->i_cow_bitmap & (1UL << *offsets))){
+ printk(KERN_INFO "COWing direct block\n");
+ //printk(KERN_INFO "COWing direct block\n");
+ *(p->p) = 0;
+ p->key = 0;
+ /* Set the bitamp when COWing -znjp */
@ -5040,6 +4908,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ }
+
+ while (--depth) {
+
+ bh = sb_bread(sb, le32_to_cpu(p->key));
+ if (!bh)
+ goto failure;
@ -5049,23 +4918,23 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ goto changed;
+ add_chain(++p, bh, (__le32*)bh->b_data + *++offsets);
+ /* Reader: end */
+ /* Find correct bitamp word */
+ /* Find correct bitmap word */
+ bitmap_w = (u32*)bh->b_data + ptrs + (*offsets/nbitsperword);
+ if (!p->key){
+ /* Set the bitmap when allocating -znjp */
+ if(create)
+ *bitmap_w = (u32)*bitmap_w | (u32)(1UL << (int)(*offsets%nbitsperword));
+ if(create){
+ *bitmap_w |= (u32)(1UL << (int)(*offsets%nbitsperword));
+ }
+ goto no_block;
+ }
+
+ /* Are we COWing any indirect blocks? -znjp */
+ if(create && !((1UL << (int)(*offsets%nbitsperword)) &
+ le32_to_cpu((u32)*bitmap_w))){
+ printk(KERN_INFO "COWing indirect block\n");
+ if(create && !(*bitmap_w & (1UL << (int)(*offsets%nbitsperword)))){
+ //printk(KERN_INFO "COWing indirect block\n");
+ *(p->p) = 0;
+ p->key = 0;
+ /* Set the bitmap -znjp */
+ *bitmap_w = (u32)*bitmap_w | (u32)(1UL << (int)(*offsets%nbitsperword));
+ *bitmap_w |= (u32)(1UL << (int)(*offsets%nbitsperword));
+ *cow = 1;
+ goto no_block;
+ }
@ -5297,6 +5166,10 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ ext3cow_fsblk_t new_blocks[4];
+ ext3cow_fsblk_t current_block;
+
+ u32 *bitmap_w = NULL;
+ int ptrs = EXT3COW_ADDR_PER_BLOCK(inode->i_sb);
+ int nbitsperword = (sizeof(u32) * 8);
+
+ num = ext3cow_alloc_blocks(handle, inode, goal, indirect_blks,
+ *blks, new_blocks, &err);
+ if (err)
@ -5306,6 +5179,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ /*
+ * metadata blocks and data blocks are allocated.
+ */
+
+ for (n = 1; n <= indirect_blks; n++) {
+ /*
+ * Get buffer_head for parent block, zero it out
@ -5324,6 +5198,13 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ }
+
+ memset(bh->b_data, 0, blocksize);
+ /* Mark the cow bitmap for each new indirect block allocated.
+ * We had to put this here, because get_branch was insufficient
+ * when allocating an indirect block. -znjp
+ */
+ bitmap_w = (u32*)bh->b_data + ptrs + (offsets[n]/nbitsperword);
+ *bitmap_w |= (u32)(1UL << (int)(offsets[n]%nbitsperword));
+
+ branch[n].p = (__le32 *) bh->b_data + offsets[n];
+ branch[n].key = cpu_to_le32(new_blocks[n]);
+ *branch[n].p = branch[n].key;
@ -6902,6 +6783,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ continue;
+ }
+ /* Only free the branches that have been newly allocated - znjp */
+ /* Also, set the bits back to 0 in the bitmap -znjp */
+ cur = 0;
+ count = 0;
+ bitmap_word = (u32*)bh->b_data + addr_per_block;
@ -6924,6 +6806,8 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ first_block = (u32*)bh->b_data + cur;
+ count = 1;
+ }
+ /* Set the bit in the bitmap back to 0 */
+ *bitmap_word ^= (1UL << i);
+ }
+ }
+ (u32*)bitmap_word++;
@ -7135,6 +7019,9 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+
+ /* We only want to remove blocks that were allocated in this
+ * epoch, i.e., have 1 bit in the bitmap. -znjp */
+ /* If we're going to truncate a block, we should its
+ * corresponding bit in the bitmap back to 0, meaning,
+ * it needs to be allocated - znjp */
+ for(b = offsets[0]; b < EXT3COW_NDIR_BLOCKS; b++){
+ if(EXT3COW_I(inode)->i_cow_bitmap & (1UL << b)){
+ if(count == 0){
@ -7148,6 +7035,8 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ block_to_free = b;
+ count = 1;
+ }
+ /* Turn off the bit in the bitmap */
+ EXT3COW_I(inode)->i_cow_bitmap ^= (1UL << b);
+ }
+ }
+ if(count > 0)
@ -7198,6 +7087,8 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ ext3cow_free_branches(handle, inode, NULL, &nr, &nr+1, 1);
+ i_data[EXT3COW_IND_BLOCK] = 0;
+ }
+ /* And set bitmap back to 0 */
+ EXT3COW_I(inode)->i_cow_bitmap ^= (1UL << EXT3COW_IND_BLOCK);
+ }
+ case EXT3COW_IND_BLOCK:
+ if(EXT3COW_I(inode)->i_cow_bitmap & (1UL << EXT3COW_DIND_BLOCK)){
@ -7206,6 +7097,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ ext3cow_free_branches(handle, inode, NULL, &nr, &nr+1, 2);
+ i_data[EXT3COW_DIND_BLOCK] = 0;
+ }
+ EXT3COW_I(inode)->i_cow_bitmap ^= (1UL << EXT3COW_DIND_BLOCK);
+ }
+ case EXT3COW_DIND_BLOCK:
+ if(EXT3COW_I(inode)->i_cow_bitmap & (1UL << EXT3COW_TIND_BLOCK)){
@ -7214,6 +7106,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ ext3cow_free_branches(handle, inode, NULL, &nr, &nr+1, 3);
+ i_data[EXT3COW_TIND_BLOCK] = 0;
+ }
+ EXT3COW_I(inode)->i_cow_bitmap ^= (1UL << EXT3COW_TIND_BLOCK);
+ }
+ case EXT3COW_TIND_BLOCK:
+ ;
@ -7450,12 +7343,10 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ inode->i_mode = le16_to_cpu(raw_inode->i_mode);
+ inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
+ inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
+ /* Taken out for versioning -znjp
+ if(!(test_opt (inode->i_sb, NO_UID32))) {
+ inode->i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
+ inode->i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
+ }
+ */
+ inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
+ inode->i_size = le32_to_cpu(raw_inode->i_size);
+ inode->i_atime.tv_sec = le32_to_cpu(raw_inode->i_atime);
@ -7491,9 +7382,10 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ ei->i_next_inode = le32_to_cpu(raw_inode->i_nxt_inode);
+
+#ifdef EXT3COW_FRAGMENTS
+ ei->i_faddr = le32_to_cpu(raw_inode->i_faddr);
+ ei->i_frag_no = raw_inode->i_frag;
+ ei->i_frag_size = raw_inode->i_fsize;
+ /* Taken out for versioning -znjp */
+ //ei->i_faddr = le32_to_cpu(raw_inode->i_faddr);
+ //ei->i_frag_no = raw_inode->i_frag;
+ //ei->i_frag_size = raw_inode->i_fsize;
+#endif
+ ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl);
+ if (!S_ISREG(inode->i_mode)) {
@ -7593,15 +7485,15 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+
+ raw_inode->i_mode = cpu_to_le16(inode->i_mode);
+
+ /* Taken out for versioning -znjp
+
+ if(!(test_opt(inode->i_sb, NO_UID32))) {
+ raw_inode->i_uid_low = cpu_to_le16(low_16_bits(inode->i_uid));
+ raw_inode->i_gid_low = cpu_to_le16(low_16_bits(inode->i_gid));
+*
+ * Fix up interoperability with old kernels. Otherwise, old inodes get
+ * re-used with the upper 16 bits of the uid/gid intact
+ *
+
+
+ /* Fix up interoperability with old kernels. Otherwise, old inodes get
+ * re-used with the upper 16 bits of the uid/gid intact
+ */
+
+ if(!ei->i_dtime) {
+ raw_inode->i_uid_high =
+ cpu_to_le16(high_16_bits(inode->i_uid));
@ -7620,7 +7512,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ raw_inode->i_uid_high = 0;
+ raw_inode->i_gid_high = 0;
+ }
+ */
+
+ raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
+ raw_inode->i_size = cpu_to_le32(ei->i_disksize);
+ raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
@ -7635,9 +7527,10 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+ raw_inode->i_nxt_inode = cpu_to_le32(EXT3COW_I(inode)->i_next_inode);
+
+#ifdef EXT3COW_FRAGMENTS
+ raw_inode->i_faddr = cpu_to_le32(ei->i_faddr);
+ raw_inode->i_frag = ei->i_frag_no;
+ raw_inode->i_fsize = ei->i_frag_size;
+ /* Taken out for versioning -znjp */
+ //raw_inode->i_faddr = cpu_to_le32(ei->i_faddr);
+ //raw_inode->i_frag = ei->i_frag_no;
+ //raw_inode->i_fsize = ei->i_frag_size;
+#endif
+ raw_inode->i_file_acl = cpu_to_le32(ei->i_file_acl);
+ if (!S_ISREG(inode->i_mode)) {
@ -8099,7 +7992,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/inode.c linux-2.6.20.3-ext3cow/fs/ext3cow/in
+}
diff -ruN linux-2.6.20.3/fs/ext3cow/ioctl.c linux-2.6.20.3-ext3cow/fs/ext3cow/ioctl.c
--- linux-2.6.20.3/fs/ext3cow/ioctl.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/ioctl.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/ioctl.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,312 @@
+/*
+ * linux/fs/ext3cow/ioctl.c
@ -8413,10 +8306,26 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/ioctl.c linux-2.6.20.3-ext3cow/fs/ext3cow/io
+ return ret;
+}
+#endif
diff -ruN linux-2.6.20.3/fs/ext3cow/Makefile linux-2.6.20.3-ext3cow/fs/ext3cow/Makefile
--- linux-2.6.20.3/fs/ext3cow/Makefile 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/Makefile 2008-03-09 11:14:49.000000000 -0400
@@ -0,0 +1,12 @@
+#
+# Makefile for the linux ext3cow-filesystem routines.
+#
+
+obj-$(CONFIG_EXT3COW_FS) += ext3cow.o
+
+ext3cow-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
+ ioctl.o namei.o super.o symlink.o hash.o resize.o ext3cow_jbd.o
+
+ext3cow-$(CONFIG_EXT3COW_FS_XATTR) += xattr.o xattr_user.o xattr_trusted.o
+ext3cow-$(CONFIG_EXT3COW_FS_POSIX_ACL) += acl.o
+ext3cow-$(CONFIG_EXT3COW_FS_SECURITY) += xattr_security.o
diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/namei.c
--- linux-2.6.20.3/fs/ext3cow/namei.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/namei.c 2007-04-16 22:44:05.000000000 -0400
@@ -0,0 +1,2960 @@
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/namei.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,2979 @@
+/*
+ * linux/fs/ext3cow/namei.c
+ *
@ -9988,7 +9897,6 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+
+ if(EXT3COW_S_EPOCHNUMBER(sb) > EXT3COW_I_EPOCHNUMBER(dir)){
+ if(ext3cow_dup_inode(dentry->d_parent->d_parent->d_inode, dir))
+ //if(ext3cow_dup_inode(NULL, dir))
+ return -1;
+ }
+
@ -10197,7 +10105,6 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+
+ if(EXT3COW_S_EPOCHNUMBER(dir->i_sb) > EXT3COW_I_EPOCHNUMBER(dir)){
+ if(ext3cow_dup_inode(dentry->d_parent->d_parent->d_inode, dir))
+ //if(ext3cow_dup_inode(NULL, dir))
+ return -1;
+ }
+
@ -11074,11 +10981,6 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+ fake_inode->i_uid = inode->i_uid;
+ fake_inode->i_gid = inode->i_gid;
+
+ /* uid_high and gid_high code would go here -znjp
+ fake_inode->i_uid_high = inode->i_uid_high;
+ fake_inode->i_gid_high = inode->i_gid_high;
+ */
+
+ atomic_set(&fake_inode->i_count, 1);
+
+ fake_inode->i_nlink = inode->i_nlink;
@ -11097,9 +10999,10 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+ fake_inode->i_blocks = inode->i_blocks;
+ fake_ini->i_flags = ini->i_flags;
+#ifdef EXT3COW_FRAGMENTS
+ fake_ini->i_faddr = ini->i_faddr;
+ fake_ini->i_frag_no = ini->i_frag_no;
+ fake_ini->i_frag_size = ini->i_frag_size;
+ /* Taken out for versioning -znjp */
+ //fake_ini->i_faddr = ini->i_faddr;
+ //fake_ini->i_frag_no = ini->i_frag_no;
+ //fake_ini->i_frag_size = ini->i_frag_size;
+#endif
+ fake_ini->i_file_acl = ini->i_file_acl;
+ if (!S_ISREG(fake_inode->i_mode)) {
@ -11229,11 +11132,6 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+ cow_inode->i_mode = inode->i_mode;
+ cow_inode->i_uid = inode->i_uid;
+ cow_inode->i_gid = inode->i_gid;
+
+ /* uid_high and gid_high code would go here -znjp
+ cow_inode->i_uid_high = inode->i_uid_high;
+ cow_inode->i_gid_high = inode->i_gid_high;
+ */
+
+ cow_inode->i_nlink = inode->i_nlink;
+ cow_inode->i_size = inode->i_size;
@ -11251,9 +11149,10 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+ cow_inode->i_blocks = inode->i_blocks;
+ cow_ini->i_flags = ini->i_flags;
+#ifdef EXT3COW_FRAGMENTS
+ cow_ini->i_faddr = ini->i_faddr;
+ cow_ini->i_frag_no = ini->i_frag_no;
+ cow_ini->i_frag_size = ini->i_frag_size;
+ /* Taken out for versioning -znjp */
+ //cow_ini->i_faddr = ini->i_faddr;
+ //cow_ini->i_frag_no = ini->i_frag_no;
+ //cow_ini->i_frag_size = ini->i_frag_size;
+#endif
+ cow_ini->i_file_acl = ini->i_file_acl;
+ if (!S_ISREG(cow_inode->i_mode)) {
@ -11334,14 +11233,43 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+ * be used for removing versions. */
+int ext3cow_reclaim_dup_inode(struct inode *dir, struct inode *inode)
+{
+ // handle_t *handle = NULL;
+ handle_t *handle = NULL;
+ int err = 0;
+ struct inode *old_inode = NULL;
+ struct inode *parent = dir;
+
+ if(!parent)
+ parent = inode;
+
+ if(is_bad_inode(inode))
+ goto no_delete;
+ return -1;
+
+ handle = ext3cow_journal_start(parent,
+ EXT3COW_DELETE_TRANS_BLOCKS(parent->i_sb));
+ if(IS_ERR(handle))
+ return PTR_ERR(handle);
+
+ if(IS_DIRSYNC(parent))
+ handle->h_sync = 1;
+
+ old_inode = iget(parent->i_sb, EXT3COW_I_NEXT_INODE(inode));
+ err = PTR_ERR(old_inode);
+ if (!IS_ERR(old_inode)){
+
+ EXT3COW_I(inode)->i_epoch_number = EXT3COW_I_EPOCHNUMBER(old_inode);
+ EXT3COW_I(inode)->i_cow_bitmap = EXT3COW_I(old_inode)->i_cow_bitmap;
+ EXT3COW_I(inode)->i_next_inode = EXT3COW_I(old_inode)->i_next_inode;
+ old_inode->i_nlink = 0;
+
+ iput(old_inode);
+ ext3cow_mark_inode_dirty(handle, inode);
+ }else
+ ext3cow_error(inode->i_sb, "ext3cow_reclaim_dup_inode",
+ "Couldn't remove dup'd inode.");
+
+ ext3cow_journal_stop(handle);
+
+ return 0;
+ no_delete:
+ return -1;
+}
+
+/*
@ -11379,7 +11307,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.c linux-2.6.20.3-ext3cow/fs/ext3cow/na
+};
diff -ruN linux-2.6.20.3/fs/ext3cow/namei.h linux-2.6.20.3-ext3cow/fs/ext3cow/namei.h
--- linux-2.6.20.3/fs/ext3cow/namei.h 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/namei.h 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/namei.h 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,8 @@
+/* linux/fs/ext3cow/namei.h
+ *
@ -11391,7 +11319,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/namei.h linux-2.6.20.3-ext3cow/fs/ext3cow/na
+extern struct dentry *ext3cow_get_parent(struct dentry *child);
diff -ruN linux-2.6.20.3/fs/ext3cow/resize.c linux-2.6.20.3-ext3cow/fs/ext3cow/resize.c
--- linux-2.6.20.3/fs/ext3cow/resize.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/resize.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/resize.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,1042 @@
+/*
+ * linux/fs/ext3cow/resize.c
@ -12437,7 +12365,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/resize.c linux-2.6.20.3-ext3cow/fs/ext3cow/r
+} /* ext3cow_group_extend */
diff -ruN linux-2.6.20.3/fs/ext3cow/super.c linux-2.6.20.3-ext3cow/fs/ext3cow/super.c
--- linux-2.6.20.3/fs/ext3cow/super.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/super.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/super.c 2008-03-09 11:14:49.000000000 -0400
@@ -0,0 +1,2808 @@
+/*
+ * linux/fs/ext3cow/super.c
@ -15249,7 +15177,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/super.c linux-2.6.20.3-ext3cow/fs/ext3cow/su
+module_exit(exit_ext3cow_fs)
diff -ruN linux-2.6.20.3/fs/ext3cow/symlink.c linux-2.6.20.3-ext3cow/fs/ext3cow/symlink.c
--- linux-2.6.20.3/fs/ext3cow/symlink.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/symlink.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/symlink.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,54 @@
+/*
+ * linux/fs/ext3cow/symlink.c
@ -15307,7 +15235,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/symlink.c linux-2.6.20.3-ext3cow/fs/ext3cow/
+};
diff -ruN linux-2.6.20.3/fs/ext3cow/xattr.c linux-2.6.20.3-ext3cow/fs/ext3cow/xattr.c
--- linux-2.6.20.3/fs/ext3cow/xattr.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr.c 2008-03-09 11:14:49.000000000 -0400
@@ -0,0 +1,1314 @@
+/*
+ * linux/fs/ext3cow/xattr.c
@ -16625,7 +16553,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/xattr.c linux-2.6.20.3-ext3cow/fs/ext3cow/xa
+}
diff -ruN linux-2.6.20.3/fs/ext3cow/xattr.h linux-2.6.20.3-ext3cow/fs/ext3cow/xattr.h
--- linux-2.6.20.3/fs/ext3cow/xattr.h 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr.h 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr.h 2008-03-09 11:14:49.000000000 -0400
@@ -0,0 +1,145 @@
+/*
+ File: fs/ext3cow/xattr.h
@ -16774,7 +16702,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/xattr.h linux-2.6.20.3-ext3cow/fs/ext3cow/xa
+#endif
diff -ruN linux-2.6.20.3/fs/ext3cow/xattr_security.c linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_security.c
--- linux-2.6.20.3/fs/ext3cow/xattr_security.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_security.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_security.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,77 @@
+/*
+ * linux/fs/ext3cow/xattr_security.c
@ -16855,7 +16783,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/xattr_security.c linux-2.6.20.3-ext3cow/fs/e
+};
diff -ruN linux-2.6.20.3/fs/ext3cow/xattr_trusted.c linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_trusted.c
--- linux-2.6.20.3/fs/ext3cow/xattr_trusted.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_trusted.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_trusted.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,62 @@
+/*
+ * linux/fs/ext3cow/xattr_trusted.c
@ -16921,7 +16849,7 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/xattr_trusted.c linux-2.6.20.3-ext3cow/fs/ex
+};
diff -ruN linux-2.6.20.3/fs/ext3cow/xattr_user.c linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_user.c
--- linux-2.6.20.3/fs/ext3cow/xattr_user.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_user.c 2007-04-07 14:23:50.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/ext3cow/xattr_user.c 2008-03-09 11:14:48.000000000 -0400
@@ -0,0 +1,64 @@
+/*
+ * linux/fs/ext3cow/xattr_user.c
@ -16987,10 +16915,147 @@ diff -ruN linux-2.6.20.3/fs/ext3cow/xattr_user.c linux-2.6.20.3-ext3cow/fs/ext3c
+ .get = ext3cow_xattr_user_get,
+ .set = ext3cow_xattr_user_set,
+};
diff -ruN linux-2.6.20.3/fs/Kconfig linux-2.6.20.3-ext3cow/fs/Kconfig
--- linux-2.6.20.3/fs/Kconfig 2007-03-13 14:27:08.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/Kconfig 2008-03-09 11:14:25.000000000 -0400
@@ -136,6 +136,77 @@
If you are not using a security module that requires using
extended attributes for file security labels, say N.
+
+
+config EXT3COW_FS
+ tristate "Ext3cow journalling and versioning file system support"
+ select JBD
+ help
+ This is the journalling version of the Second extended file system
+ (often called ext3), the de facto standard Linux file system
+ (method to organize files on a storage device) for hard disks.
+
+ The journalling code included in this driver means you do not have
+ to run e2fsck (file system checker) on your file systems after a
+ crash. The journal keeps track of any changes that were being made
+ at the time the system crashed, and can ensure that your file system
+ is consistent without the need for a lengthy check.
+
+ Other than adding the journal to the file system, the on-disk format
+ of ext3 is identical to ext2. It is possible to freely switch
+ between using the ext3 driver and the ext2 driver, as long as the
+ file system has been cleanly unmounted, or e2fsck is run on the file
+ system.
+
+ To add a journal on an existing ext2 file system or change the
+ behavior of ext3 file systems, you can use the tune2fs utility ("man
+ tune2fs"). To modify attributes of files and directories on ext3
+ file systems, use chattr ("man chattr"). You need to be using
+ e2fsprogs version 1.20 or later in order to create ext3 journals
+ (available at <http://sourceforge.net/projects/e2fsprogs/>).
+
+ To compile this file system support as a module, choose M here: the
+ module will be called ext3.
+
+config EXT3COW_FS_XATTR
+ bool "Ext3cow extended attributes"
+ depends on EXT3COW_FS
+ default y
+ help
+ Extended attributes are name:value pairs associated with inodes by
+ the kernel or by users (see the attr(5) manual page, or visit
+ <http://acl.bestbits.at/> for details).
+
+ If unsure, say N.
+
+ You need this for POSIX ACL support on ext3cow.
+
+config EXT3COW_FS_POSIX_ACL
+ bool "Ext3cow POSIX Access Control Lists"
+ depends on EXT3COW_FS_XATTR
+ select FS_POSIX_ACL
+ help
+ Posix Access Control Lists (ACLs) support permissions for users and
+ groups beyond the owner/group/world scheme.
+
+ To learn more about Access Control Lists, visit the Posix ACLs for
+ Linux website <http://acl.bestbits.at/>.
+
+ If you don't know what Access Control Lists are, say N
+
+config EXT3COW_FS_SECURITY
+ bool "Ext3cow Security Labels"
+ depends on EXT3COW_FS_XATTR
+ help
+ Security labels support alternative access control models
+ implemented by security modules like SELinux. This option
+ enables an extended attribute handler for file security
+ labels in the ext3cow filesystem.
+
+ If you are not using a security module that requires using
+ extended attributes for file security labels, say N.
+
+
config EXT4DEV_FS
tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)"
depends on EXPERIMENTAL
@@ -205,23 +276,23 @@
tristate
help
This is a generic journalling layer for block devices. It is
- currently used by the ext3 and OCFS2 file systems, but it could
+ currently used by the ext3, ext3cow and OCFS2 file systems, but it could
also be used to add journal support to other file systems or block
devices such as RAID or LVM.
- If you are using the ext3 or OCFS2 file systems, you need to
+ If you are using the ext3, ext3cow or OCFS2 file systems, you need to
say Y here. If you are not using ext3 OCFS2 then you will probably
want to say N.
To compile this device as a module, choose M here: the module will be
- called jbd. If you are compiling ext3 or OCFS2 into the kernel,
+ called jbd. If you are compiling ext3, ext3cow or OCFS2 into the kernel,
you cannot compile this code as a module.
config JBD_DEBUG
bool "JBD (ext3) debugging support"
depends on JBD
help
- If you are using the ext3 journaled file system (or potentially any
+ If you are using the ext3 or ext3cow journaled file system (or potentially any
other file system/device using JBD), this option allows you to
enable debugging output while the system is running, in order to
help track down any problems you are having. By default the
@@ -266,11 +337,12 @@
"echo 0 > /proc/sys/fs/jbd2-debug".
config FS_MBCACHE
-# Meta block cache for Extended Attributes (ext2/ext3/ext4)
+# Meta block cache for Extended Attributes (ext2/ext3(cow)/ext4)
tristate
- depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
- default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
- default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
+ depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT3COW_FS_XATTR || EXT4DEV_FS_XATTR
+ default y if EXT2_FS=y || EXT3_FS=y || EXT3COW_FS=y || EXT4DEV_FS=y
+ default m if EXT2_FS=m || EXT3_FS=m || EXT3COW_FS=m || EXT4DEV_FS=m
+
config REISERFS_FS
tristate "Reiserfs support"
diff -ruN linux-2.6.20.3/fs/Makefile linux-2.6.20.3-ext3cow/fs/Makefile
--- linux-2.6.20.3/fs/Makefile 2007-03-13 14:27:08.000000000 -0400
+++ linux-2.6.20.3-ext3cow/fs/Makefile 2008-03-09 11:14:54.000000000 -0400
@@ -63,6 +63,7 @@
# Do not add any filesystems before this line
obj-$(CONFIG_REISERFS_FS) += reiserfs/
obj-$(CONFIG_EXT3_FS) += ext3/ # Before ext2 so root fs can be ext3
+obj-$(CONFIG_EXT3COW_FS) += ext3cow/ # Before ext2 so root fs can be ext3
obj-$(CONFIG_EXT4DEV_FS) += ext4/ # Before ext2 so root fs can be ext4dev
obj-$(CONFIG_JBD) += jbd/
obj-$(CONFIG_JBD2) += jbd2/
diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs.h linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs.h
--- linux-2.6.20.3/include/linux/ext3cow_fs.h 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs.h 2007-04-07 15:30:04.000000000 -0400
@@ -0,0 +1,947 @@
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs.h 2008-03-09 11:10:57.000000000 -0400
@@ -0,0 +1,948 @@
+/*
+ * linux/include/linux/ext3cow_fs.h
+ *
@ -17021,6 +17086,7 @@ diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs.h linux-2.6.20.3-ext3cow/inclu
+ */
+#undef EXT3COWFS_DEBUG
+
+
+/*
+ * Define EXT3COW_RESERVATION to reserve data blocks for expanding files
+ */
@ -17314,11 +17380,11 @@ diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs.h linux-2.6.20.3-ext3cow/inclu
+ __le32 i_faddr; /* Fragment address */
+ union {
+ struct {
+ __u8 l_i_frag; /* Fragment number */
+ __u8 l_i_fsize; /* Fragment size */
+ __u16 i_pad1;
+ //__le16 l_i_uid_high; /* these 2 fields */
+ //__le16 l_i_gid_high; /* were reserved2[0] */
+ //__u8 l_i_frag; /* Fragment number */
+ //__u8 l_i_fsize; /* Fragment size */
+ //__u16 i_pad1;
+ __le16 l_i_uid_high; /* these 2 fields */
+ __le16 l_i_gid_high; /* were reserved2[0] */
+ //__u32 l_i_reserved2;
+ /* Epoch number for versioning -znjp */
+ __le32 l_i_epoch_number;
@ -17349,13 +17415,13 @@ diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs.h linux-2.6.20.3-ext3cow/inclu
+/* For versioning -znjp */
+//#define i_reserved1 osd1.linux1.l_i_reserved1
+#define i_cowbitmap osd1.linux1.l_i_direct_cow_bitmap
+#define i_frag osd2.linux2.l_i_frag
+#define i_fsize osd2.linux2.l_i_fsize
+//#define i_frag osd2.linux2.l_i_frag
+//#define i_fsize osd2.linux2.l_i_fsize
+#define i_uid_low i_uid
+#define i_gid_low i_gid
+/* For versioning -znjp */
+//#define i_uid_high osd2.linux2.l_i_uid_high
+//#define i_gid_high osd2.linux2.l_i_gid_high
+#define i_uid_high osd2.linux2.l_i_uid_high
+#define i_gid_high osd2.linux2.l_i_gid_high
+//#define i_reserved2 osd2.linux2.l_i_reserved2
+#define i_epch_number osd2.linux2.l_i_epoch_number
+#define i_nxt_inode osd2.linux2.l_i_next_inode
@ -17940,7 +18006,7 @@ diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs.h linux-2.6.20.3-ext3cow/inclu
+#endif /* _LINUX_EXT3COW_FS_H */
diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs_i.h linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs_i.h
--- linux-2.6.20.3/include/linux/ext3cow_fs_i.h 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs_i.h 2007-03-24 15:22:06.000000000 -0400
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs_i.h 2008-03-09 11:10:55.000000000 -0400
@@ -0,0 +1,152 @@
+/*
+ * linux/include/linux/ext3cow_fs_i.h
@ -18096,7 +18162,7 @@ diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs_i.h linux-2.6.20.3-ext3cow/inc
+#endif /* _LINUX_EXT3COW_FS_I */
diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs_sb.h linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs_sb.h
--- linux-2.6.20.3/include/linux/ext3cow_fs_sb.h 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs_sb.h 2007-03-24 15:22:35.000000000 -0400
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_fs_sb.h 2008-03-09 11:10:57.000000000 -0400
@@ -0,0 +1,86 @@
+/*
+ * linux/include/linux/ext3cow_fs_sb.h
@ -18186,7 +18252,7 @@ diff -ruN linux-2.6.20.3/include/linux/ext3cow_fs_sb.h linux-2.6.20.3-ext3cow/in
+#endif /* _LINUX_EXT3COW_FS_SB */
diff -ruN linux-2.6.20.3/include/linux/ext3cow_jbd.h linux-2.6.20.3-ext3cow/include/linux/ext3cow_jbd.h
--- linux-2.6.20.3/include/linux/ext3cow_jbd.h 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_jbd.h 2007-03-24 13:58:07.000000000 -0400
+++ linux-2.6.20.3-ext3cow/include/linux/ext3cow_jbd.h 2008-03-09 11:10:56.000000000 -0400
@@ -0,0 +1,226 @@
+/*
+ * linux/include/linux/ext3cow_jbd.h
@ -18416,7 +18482,7 @@ diff -ruN linux-2.6.20.3/include/linux/ext3cow_jbd.h linux-2.6.20.3-ext3cow/incl
+#endif /* _LINUX_EXT3COW_JBD_H */
diff -ruN linux-2.6.20.3/include/linux/magic.h linux-2.6.20.3-ext3cow/include/linux/magic.h
--- linux-2.6.20.3/include/linux/magic.h 2007-03-13 14:27:08.000000000 -0400
+++ linux-2.6.20.3-ext3cow/include/linux/magic.h 2007-03-24 14:06:39.000000000 -0400
+++ linux-2.6.20.3-ext3cow/include/linux/magic.h 2008-03-09 11:10:57.000000000 -0400
@@ -9,6 +9,7 @@
#define EFS_SUPER_MAGIC 0x414A53
#define EXT2_SUPER_MAGIC 0xEF53