d9a738597f
Allow requests for security.* and trusted.* xattr name spaces to pass through to server. The new files are 99% cut and paste from fs/9p/xattr_user.c with the namespaces changed. It has the intended effect in superficial testing. I do not know much detail about how these namespaces are used, but passing them through to the server, which can decide whether to handle them or not, seems reasonable. I want to support a use case where an ext4 file system is mounted via 9P, then re-exported via samba to windows clients in a cluster. Windows wants to store xattrs such as security.NTACL. This works when ext4 directly backs samba, but not when 9P is inserted. This use case is documented here: http://code.google.com/p/diod/issues/detail?id=95 Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
/*
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* Copyright IBM Corporation, 2010
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* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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#ifndef FS_9P_XATTR_H
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#define FS_9P_XATTR_H
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#include <linux/xattr.h>
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#include <net/9p/9p.h>
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#include <net/9p/client.h>
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extern const struct xattr_handler *v9fs_xattr_handlers[];
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extern struct xattr_handler v9fs_xattr_user_handler;
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extern struct xattr_handler v9fs_xattr_trusted_handler;
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extern struct xattr_handler v9fs_xattr_security_handler;
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extern const struct xattr_handler v9fs_xattr_acl_access_handler;
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extern const struct xattr_handler v9fs_xattr_acl_default_handler;
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extern ssize_t v9fs_fid_xattr_get(struct p9_fid *, const char *,
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void *, size_t);
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extern ssize_t v9fs_xattr_get(struct dentry *, const char *,
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void *, size_t);
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extern int v9fs_fid_xattr_set(struct p9_fid *, const char *,
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const void *, size_t, int);
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extern int v9fs_xattr_set(struct dentry *, const char *,
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const void *, size_t, int);
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extern ssize_t v9fs_listxattr(struct dentry *, char *, size_t);
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#endif /* FS_9P_XATTR_H */
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