On 2/24/21 4:29 PM, Darrick J. Wong wrote: > From: Darrick J. Wong <djwong@xxxxxxxxxx> > > For directories, the APPEND flag means that files cannot be unlinked > from the directory. Files can be linked in or created, just not > unlinked. Document this behavior, since it's been in the VFS for years > though not explicitly mentioned. This patch is in preparation for > trying to hoist the fsgetxattr ioctl documentation to the man-pages > project. sounds good. > > Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx> Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx> > --- > man/man2/ioctl_xfs_fsgetxattr.2 | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/man/man2/ioctl_xfs_fsgetxattr.2 b/man/man2/ioctl_xfs_fsgetxattr.2 > index e2cbfca3..2c626a7e 100644 > --- a/man/man2/ioctl_xfs_fsgetxattr.2 > +++ b/man/man2/ioctl_xfs_fsgetxattr.2 > @@ -104,6 +104,7 @@ will be returned. > .B XFS_XFLAG_APPEND > The file is append-only - it can only be opened in append mode for > writing. > +For directories, this means that files cannot be unlinked from this directory. > Only the superuser or a process possessing the CAP_LINUX_IMMUTABLE > capability can set or clear this flag. > .TP >
