From f941866fc4a8ad0d0b861cc2dbffa06a9f5e8963 Mon Sep 17 00:00:00 2001 From: Amir Goldstein Date: Fri, 19 Jan 2018 21:33:44 +0200 Subject: ovl: decode lower non-dir file handles Decoding a lower non-dir file handle is done by decoding the lower dentry from underlying lower fs, finding or allocating an overlay inode that is hashed by the real lower inode and instantiating an overlay dentry with that inode. Signed-off-by: Amir Goldstein Signed-off-by: Miklos Szeredi --- fs/overlayfs/namei.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'fs/overlayfs/namei.c') diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index a35c5eaa2c01..741a42d974a3 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -310,9 +310,8 @@ static int ovl_lookup_layer(struct dentry *base, struct ovl_lookup_data *d, } -static int ovl_check_origin_fh(struct ovl_fs *ofs, struct ovl_fh *fh, - struct dentry *upperdentry, - struct ovl_path **stackp) +int ovl_check_origin_fh(struct ovl_fs *ofs, struct ovl_fh *fh, + struct dentry *upperdentry, struct ovl_path **stackp) { struct dentry *origin = NULL; int i; @@ -328,7 +327,7 @@ static int ovl_check_origin_fh(struct ovl_fs *ofs, struct ovl_fh *fh, else if (IS_ERR(origin)) return PTR_ERR(origin); - if (!ovl_is_whiteout(upperdentry) && + if (upperdentry && !ovl_is_whiteout(upperdentry) && ((d_inode(origin)->i_mode ^ d_inode(upperdentry)->i_mode) & S_IFMT)) goto invalid; -- cgit v1.2.3