Commit 8c6286f1 authored May 21, 2018 by Luis Henriques Committed by Ilya Dryomov Jun 04, 2018

ceph: fix st_nlink stat for directories

Currently, calling stat on a cephfs directory returns 1 for st_nlink.
This behaviour has recently changed in the fuse client, as some
applications seem to expect this value to be either 0 (if it's
unlinked) or 2 + number of subdirectories.  This behaviour was changed
in the fuse client with commit 67c7e4619188 ("client: use common
interp of st_nlink for dirs").

This patch modifies the kernel client to have a similar behaviour.

Link: https://tracker.ceph.com/issues/23873


Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

parent 597817dd

fs/ceph/inode.c

+8 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2271,6 +2271,14 @@ int ceph_getattr(const struct path path, struct kstat stat,
	stat->size = ci->i_files + ci->i_subdirs;		stat->size = ci->i_files + ci->i_subdirs;
	stat->blocks = 0;		stat->blocks = 0;
	stat->blksize = 65536;		stat->blksize = 65536;
			/*
			* Some applications rely on the number of st_nlink
			* value on directories to be either 0 (if unlinked)
			* or 2 + number of subdirectories.
			*/
			if (stat->nlink == 1)
			/* '.' + '..' + subdirs */
			stat->nlink = 1 + 1 + ci->i_subdirs;
	}		}
	}		}
	return err;		return err;