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| author | Amir Goldstein <amir73il@gmail.com> | 2023-05-02 15:48:15 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2023-05-22 19:08:37 +0300 |
| commit | 304e9c83e80d5cbe20ab64ffa1fac9fc51d30bc9 (patch) | |
| tree | b35027d2a0417c5062f9c81f63e2ee98496d29d9 /include/linux/exportfs.h | |
| parent | b52878275ce54b5d3a654ed24dfb169c1c501998 (diff) | |
| download | linux-304e9c83e80d5cbe20ab64ffa1fac9fc51d30bc9.tar.xz | |
exportfs: add explicit flag to request non-decodeable file handles
So far, all callers of exportfs_encode_inode_fh(), except for fsnotify's
show_mark_fhandle(), check that filesystem can decode file handles, but
we would like to add more callers that do not require a file handle that
can be decoded.
Introduce a flag to explicitly request a file handle that may not to be
decoded later and a wrapper exportfs_encode_fid() that sets this flag
and convert show_mark_fhandle() to use the new wrapper.
This will be used to allow adding fanotify support to filesystems that
do not support NFS export.
Acked-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20230502124817.3070545-3-amir73il@gmail.com>
Diffstat (limited to 'include/linux/exportfs.h')
| -rw-r--r-- | include/linux/exportfs.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index fe4967ba61b2..11fbd0ee1370 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -136,6 +136,7 @@ struct fid { }; #define EXPORT_FH_CONNECTABLE 0x1 /* Encode file handle with parent */ +#define EXPORT_FH_FID 0x2 /* File handle may be non-decodeable */ /** * struct export_operations - for nfsd to communicate with file systems @@ -227,9 +228,18 @@ struct export_operations { }; extern int exportfs_encode_inode_fh(struct inode *inode, struct fid *fid, - int *max_len, struct inode *parent); + int *max_len, struct inode *parent, + int flags); extern int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len, int flags); + +static inline int exportfs_encode_fid(struct inode *inode, struct fid *fid, + int *max_len) +{ + return exportfs_encode_inode_fh(inode, fid, max_len, NULL, + EXPORT_FH_FID); +} + extern struct dentry *exportfs_decode_fh_raw(struct vfsmount *mnt, struct fid *fid, int fh_len, int fileid_type, |