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| author | Miklos Szeredi <mszeredi@suse.cz> | 2014-12-13 00:59:42 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2014-12-13 00:59:42 +0100 |
| commit | 1afaba1ecb5299cdd0f69b5bad98b0185fe71e79 (patch) | |
| tree | 19b3bdd7c514de98a9131665fcb360fda3178d4e /fs/overlayfs/overlayfs.h | |
| parent | 49c21e1cacd74a8c83407c70ad860c994e606e25 (diff) | |
ovl: make path-type a bitmap
OVL_PATH_PURE_UPPER -> __OVL_PATH_UPPER | __OVL_PATH_PURE
OVL_PATH_UPPER -> __OVL_PATH_UPPER
OVL_PATH_MERGE -> __OVL_PATH_UPPER | __OVL_PATH_MERGE
OVL_PATH_LOWER -> 0
Multiple R/O layers will allow __OVL_PATH_MERGE without __OVL_PATH_UPPER.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/overlayfs/overlayfs.h')
| -rw-r--r-- | fs/overlayfs/overlayfs.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 814bed33dd07..d39eaa8f5e47 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -12,12 +12,17 @@ struct ovl_entry; enum ovl_path_type { - OVL_PATH_PURE_UPPER, - OVL_PATH_UPPER, - OVL_PATH_MERGE, - OVL_PATH_LOWER, + __OVL_PATH_PURE = (1 << 0), + __OVL_PATH_UPPER = (1 << 1), + __OVL_PATH_MERGE = (1 << 2), }; +#define OVL_TYPE_UPPER(type) ((type) & __OVL_PATH_UPPER) +#define OVL_TYPE_MERGE(type) ((type) & __OVL_PATH_MERGE) +#define OVL_TYPE_PURE_UPPER(type) ((type) & __OVL_PATH_PURE) +#define OVL_TYPE_MERGE_OR_LOWER(type) \ + (OVL_TYPE_MERGE(type) || !OVL_TYPE_UPPER(type)) + extern const char *ovl_opaque_xattr; static inline int ovl_do_rmdir(struct inode *dir, struct dentry *dentry) |