debugfs: dump inode checksum when appropriate

Dump inode checksum when displaying inode info.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c
index 6748edf..def771e 100644 (file)
--- a/debugfs/debugfs.c
+++ b/debugfs/debugfs.c
@@ -804,6 +804,19 @@ void internal_dump_inode(FILE *out, const char *prefix,
        if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
                internal_dump_inode_extra(out, prefix, inode_num,
                                          (struct ext2_inode_large *) inode);
+       if (current_fs->super->s_creator_os == EXT2_OS_LINUX &&
+           current_fs->super->s_feature_ro_compat &
+               EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
+               __u32 crc = inode->i_checksum_lo;
+               if (is_large_inode &&
+                   large_inode->i_extra_isize >=
+                               (offsetof(struct ext2_inode_large,
+                                         i_checksum_hi) -
+                                EXT2_GOOD_OLD_INODE_SIZE))
+                       crc |= ((__u32)large_inode->i_checksum_hi) << 16;
+               fprintf(out, "Inode checksum: 0x%08x\n", crc);
+       }
+
        if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
                fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
                        (int) inode->i_size, (char *)inode->i_block);