include/linux/exportfs.h

1 /* SPDX-License-Identifier: GPL-2.0 */
33 	 * 32bit inode number, 32 bit generation number.
38 	 * 32bit inode number, 32 bit generation number,
39 	 * 32 bit parent directory inode number.
44 	 * 64 bit object ID, 64 bit root object ID,
45 	 * 32 bit generation number.
50 	 * 64 bit object ID, 64 bit root object ID,
51 	 * 32 bit generation number,
52 	 * 64 bit parent object ID, 32 bit parent generation.
57 	 * 64 bit object ID, 64 bit root object ID,
58 	 * 32 bit generation number,
59 	 * 64 bit parent object ID, 32 bit parent generation,
60 	 * 64 bit parent root object ID.
65 	 * 32 bit block number, 16 bit partition reference,
66 	 * 16 bit unused, 32 bit generation number.
71 	 * 32 bit block number, 16 bit partition reference,
72 	 * 16 bit unused, 32 bit generation number,
73 	 * 32 bit parent block number, 32 bit parent generation number
78 	 * 64 bit checkpoint number, 64 bit inode number,
79 	 * 32 bit generation number.
84 	 * 64 bit checkpoint number, 64 bit inode number,
85 	 * 32 bit generation number, 32 bit parent generation.
86 	 * 64 bit parent inode number.
91 	 * 32 bit generation number, 40 bit i_pos.
96 	 * 32 bit generation number, 40 bit i_pos,
97 	 * 32 bit parent generation number, 40 bit parent i_pos
102 	 * 64 bit inode number, 32 bit generation number.
107 	 * 64 bit inode number, 32 bit generation number,
108 	 * 64 bit parent inode number, 32 bit parent generation.
113 	 * 128 bit child FID (struct lu_fid)
114 	 * 128 bit parent FID (struct lu_fid)
119 	 * 64 bit inode number, 32 bit subvolume, 32 bit generation number:
125 	 * 64 bit unique kernfs id
160 #define EXPORT_FH_FID		0x2 /* File handle may be non-decodeable */
164  * struct export_operations - for nfsd to communicate with file systems
178  *    file referred to by the &struct dentry @de.  If @flag has CONNECTABLE bit
181  *    filesystem.   This typically means storing a reference to de->d_parent in
208  *    or error.  @get_name will be called without @parent->i_mutex held.
219  *    get_parent is called with child->d_inode->i_mutex down
254  * exportfs_lock_op_is_async() - export op supports async lock operation
263 	return export_ops->flags & EXPORT_OP_ASYNC_LOCK;  in exportfs_lock_op_is_async()
274 	return !nop || nop->encode_fh;  in exportfs_can_encode_fid()
279 	return nop && nop->fh_to_dentry;  in exportfs_can_decode_fh()
286 	 * If a non-decodeable file handle was requested, we only need to make  in exportfs_can_encode_fh()
287 	 * sure that filesystem did not opt-out of encoding fid.  in exportfs_can_encode_fh()