[PATCH 08/50] mke2fs: Allow metadata checksums to be turned on at mkfs time
From: Darrick J. Wong <hidden>
Date: 2011-11-29 00:29:01
Subsystem:
the rest · Maintainer:
Linus Torvalds
Write out checksummed inodes even when writing out a zeroed table. Signed-off-by: Darrick J. Wong <redacted> --- misc/mke2fs.c | 29 ++++++++++++++++++++++++++++- 1 files changed, 28 insertions(+), 1 deletions(-)
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 0ef2531..98af8b0 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c@@ -305,6 +305,27 @@ _("Warning: the backup superblock/group descriptors at block %u contain\n" ext2fs_badblocks_list_iterate_end(bb_iter); } +static void write_reserved_inodes(ext2_filsys fs) +{ + errcode_t retval; + ext2_ino_t ino; + struct ext2_inode *inode; + + retval = ext2fs_get_mem(EXT2_INODE_SIZE(fs->super), &inode); + if (retval) { + com_err("inode_init", retval, + "while allocating memory"); + exit(1); + } + bzero(inode, EXT2_INODE_SIZE(fs->super)); + + for (ino = 1; ino < EXT2_FIRST_INO(fs->super); ino++) + ext2fs_write_inode_full(fs, ino, inode, + EXT2_INODE_SIZE(fs->super)); + + ext2fs_free_mem(&inode); +} + static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed) { errcode_t retval;
@@ -350,6 +371,12 @@ static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed) ext2fs_zero_blocks2(0, 0, 0, 0, 0); ext2fs_numeric_progress_close(fs, &progress, _("done \n")); + + /* Reserved inodes must always have correct checksums */ + if (fs->super->s_creator_os == EXT2_OS_LINUX && + fs->super->s_feature_ro_compat & + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) + write_reserved_inodes(fs); } static void create_root_dir(ext2_filsys fs)
@@ -869,7 +896,7 @@ static __u32 ok_features[3] = { #ifdef CONFIG_QUOTA EXT4_FEATURE_RO_COMPAT_QUOTA| #endif - 0 + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM };