From 9309d3386ace5849452dc5a4627d96bfe8c6b673 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Mon, 30 Jul 2012 18:54:04 -0400 Subject: [PATCH] mke2fs: allow metadata checksums to be turned on at mkfs time Write out reserved inodes with full checksums when writing out a zeroed table. Signed-off-by: Darrick J. Wong Signed-off-by: Theodore Ts'o --- misc/mke2fs.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/misc/mke2fs.c b/misc/mke2fs.c index 94db901..d1d8156 100644 --- a/misc/mke2fs.c +++ b/misc/mke2fs.c @@ -304,6 +304,27 @@ _("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; @@ -349,6 +370,12 @@ 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) @@ -868,7 +895,7 @@ static __u32 ok_features[3] = { #ifdef CONFIG_QUOTA EXT4_FEATURE_RO_COMPAT_QUOTA| #endif - 0 + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM }; -- 1.8.3.1