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54 lines
1.6 KiB
54 lines
1.6 KiB
// SPDX-License-Identifier: LGPL-2.1 |
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/* |
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* |
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* Copyright (C) International Business Machines Corp., 2007 |
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* Author(s): Steve French ([email protected]) |
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* |
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* Common Internet FileSystem (CIFS) client |
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* |
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* Operations related to support for exporting files via NFSD |
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* |
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*/ |
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/* |
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* See Documentation/filesystems/nfs/exporting.rst |
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* and examples in fs/exportfs |
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* |
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* Since cifs is a network file system, an "fsid" must be included for |
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* any nfs exports file entries which refer to cifs paths. In addition |
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* the cifs mount must be mounted with the "serverino" option (ie use stable |
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* server inode numbers instead of locally generated temporary ones). |
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* Although cifs inodes do not use generation numbers (have generation number |
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* of zero) - the inode number alone should be good enough for simple cases |
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* in which users want to export cifs shares with NFS. The decode and encode |
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* could be improved by using a new routine which expects 64 bit inode numbers |
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* instead of the default 32 bit routines in fs/exportfs |
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* |
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*/ |
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#include <linux/fs.h> |
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#include <linux/exportfs.h> |
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#include "cifsglob.h" |
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#include "cifs_debug.h" |
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#include "cifsfs.h" |
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#ifdef CONFIG_CIFS_NFSD_EXPORT |
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static struct dentry *cifs_get_parent(struct dentry *dentry) |
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{ |
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/* BB need to add code here eventually to enable export via NFSD */ |
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cifs_dbg(FYI, "get parent for %p\n", dentry); |
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return ERR_PTR(-EACCES); |
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} |
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const struct export_operations cifs_export_ops = { |
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.get_parent = cifs_get_parent, |
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/* Following five export operations are unneeded so far and can default: |
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.get_dentry = |
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.get_name = |
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.find_exported_dentry = |
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.decode_fh = |
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.encode_fs = */ |
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}; |
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#endif /* CONFIG_CIFS_NFSD_EXPORT */ |
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