We don't actually list the ftype constants, so do that. Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --- .../XFS_Filesystem_Structure/directories.asciidoc | 29 ++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/design/XFS_Filesystem_Structure/directories.asciidoc b/design/XFS_Filesystem_Structure/directories.asciidoc index 1758c4e..9bb50bd 100644 --- a/design/XFS_Filesystem_Structure/directories.asciidoc +++ b/design/XFS_Filesystem_Structure/directories.asciidoc @@ -26,6 +26,35 @@ directories. * An +offset+ or +tag+ used for iterative readdir calls. +* If the +XFS_SB_FEAT_INCOMPAT_FTYPE+ feature flag is set, each +directory entry contains an +ftype+ field that caches the inode's type +to avoid having to perform an inode lookup. + +.ftype values +[options="header"] +|===== +| Flag | Description +| +XFS_DIR3_FT_UNKNOWN+ | +Entry points to an unknown inode type. This should never appear on disk. +| +XFS_DIR3_FT_REG_FILE+ | +Entry points to a file. +| +XFS_DIR3_FT_DIR+ | +Entry points to another directory. +| +XFS_DIR3_FT_CHRDEV+ | +Entry points to a character device. +| +XFS_DIR3_FT_BLKDEV+ | +Entry points to a block device. +| +XFS_DIR3_FT_FIFO+ | +Entry points to a FIFO. +| +XFS_DIR3_FT_SOCK+ | +Entry points to a socket. +| +XFS_DIR3_FT_SYMLINK+ | +Entry points to a symbolic link. +| +XFS_DIR3_FT_WHT+ | +Entry points to an overlayfs whiteout file. This (as far as the author +knows) has never appeared on disk. +|===== + All non-shortform directories also contain two additional structures: ``leaves'' and ``freespace indexes''. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
