diff options
Diffstat (limited to 'fs/cifs/export.c')
| -rw-r--r-- | fs/cifs/export.c | 49 |
1 files changed, 31 insertions, 18 deletions
diff --git a/fs/cifs/export.c b/fs/cifs/export.c index 96df1d51fdc3..893fd0aebff8 100644 --- a/fs/cifs/export.c +++ b/fs/cifs/export.c @@ -5,7 +5,7 @@ * Author(s): Steve French (sfrench@us.ibm.com) * * Common Internet FileSystem (CIFS) client - * + * * Operations related to support for exporting files via NFSD * * This library is free software; you can redistribute it and/or modify @@ -22,32 +22,45 @@ * along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - - /* + + /* * See Documentation/filesystems/Exporting * and examples in fs/exportfs + * + * Since cifs is a network file system, an "fsid" must be included for + * any nfs exports file entries which refer to cifs paths. In addition + * the cifs mount must be mounted with the "serverino" option (ie use stable + * server inode numbers instead of locally generated temporary ones). + * Although cifs inodes do not use generation numbers (have generation number + * of zero) - the inode number alone should be good enough for simple cases + * in which users want to export cifs shares with NFS. The decode and encode + * could be improved by using a new routine which expects 64 bit inode numbers + * instead of the default 32 bit routines in fs/exportfs + * */ #include <linux/fs.h> #include <linux/exportfs.h> - +#include "cifsglob.h" +#include "cifs_debug.h" + #ifdef CONFIG_CIFS_EXPERIMENTAL - static struct dentry *cifs_get_parent(struct dentry *dentry) { - /* BB need to add code here eventually to enable export via NFSD */ - return ERR_PTR(-EACCES); + /* BB need to add code here eventually to enable export via NFSD */ + cFYI(1, ("get parent for %p", dentry)); + return ERR_PTR(-EACCES); } - + struct export_operations cifs_export_ops = { - .get_parent = cifs_get_parent, -/* Following five export operations are unneeded so far and can default */ -/* .get_dentry = - .get_name = - .find_exported_dentry = - .decode_fh = - .encode_fs = */ - }; - + .get_parent = cifs_get_parent, +/* Following five export operations are unneeded so far and can default: + .get_dentry = + .get_name = + .find_exported_dentry = + .decode_fh = + .encode_fs = */ +}; + #endif /* EXPERIMENTAL */ - + |