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| author | Amir Goldstein <amir73il@gmail.com> | 2017-07-12 13:17:16 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2018-01-24 11:25:59 +0100 |
| commit | 8ed5eec9d6c4c013aa657ebefbd10a1a0d15893d (patch) | |
| tree | 634ea6f80f9212f0d81c846145a8b260f2c6d34a /fs/overlayfs/overlayfs.h | |
| parent | ovl: document NFS export (diff) | |
| download | linux-8ed5eec9d6c4c013aa657ebefbd10a1a0d15893d.tar.xz linux-8ed5eec9d6c4c013aa657ebefbd10a1a0d15893d.zip | |
ovl: encode pure upper file handles
Encode overlay file handles as struct ovl_fh containing the file handle
encoding of the real upper inode.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/overlayfs.h')
| -rw-r--r-- | fs/overlayfs/overlayfs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 2dddcd257eb3..f2baa2ccaacd 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -68,6 +68,9 @@ enum ovl_entry_flag { #error Endianness not defined #endif +/* The type returned by overlay exportfs ops when encoding an ovl_fh handle */ +#define OVL_FILEID 0xfb + /* On-disk and in-memeory format for redirect by file handle */ struct ovl_fh { u8 version; /* 0 */ @@ -351,3 +354,6 @@ int ovl_set_attr(struct dentry *upper, struct kstat *stat); struct ovl_fh *ovl_encode_fh(struct dentry *real, bool is_upper); int ovl_set_origin(struct dentry *dentry, struct dentry *lower, struct dentry *upper); + +/* export.c */ +extern const struct export_operations ovl_export_operations; |