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Amir Goldstein 0c49508700 ovl: fix value of i_ino for lower hardlink corner case

commit 300b124fcf upstream.

Commit 6dde1e42f4 ("ovl: make i_ino consistent with st_ino in more
cases"), relaxed the condition nfs_export=on in order to set the value of
i_ino to xino map of real ino.

Specifically, it also relaxed the pre-condition that index=on for
consistent i_ino. This opened the corner case of lower hardlink in
ovl_get_inode(), which calls ovl_fill_inode() with ino=0 and then
ovl_init_inode() is called to set i_ino to lower real ino without the xino
mapping.

Pass the correct values of ino;fsid in this case to ovl_fill_inode(), so it
can initialize i_ino correctly.

Fixes: 6dde1e42f4 ("ovl: make i_ino consistent with st_ino in more ...")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-04-21 09:06:31 +02:00

copy_up.c

ovl: don't use a temp buf for encoding real fh

2019-12-10 16:00:55 +01:00

dir.c

ovl: relax WARN_ON() on rename to self

2019-12-10 16:00:55 +01:00

export.c

ovl: make sure that real fid is 32bit aligned in memory

2019-12-10 16:00:55 +01:00

file.c

ovl: fix lseek overflow on 32bit