ceph: pass unhandled ceph.* setxattrs through to MDS (3adf654d) · Commits · 戴 / test

If we do not specifically understand a setxattr on a ceph.* virtual xattr, send it through to the MDS. This allows us to implement new functionality via the MDS without direct support on the client side. Signed-off-by:

Sage Weil <sage@inktank.com> Reviewed-by:

Sam Lang <sam.lang@inktank.com>

fs/ceph/xattr.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -777,6 +777,10 @@ int ceph_setxattr(struct dentry dentry, const char name,
		if (vxattr && vxattr->readonly)
		return -EOPNOTSUPP;

		/* pass any unhandled ceph.* xattrs through to the MDS */
		if (!strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN))
		goto do_sync_unlocked;

		/* preallocate memory for xattr name, value, index node */
		err = -ENOMEM;
		newname = kmemdup(name, name_len + 1, GFP_NOFS);
		@@ -833,6 +837,7 @@ retry:

		do_sync:
		spin_unlock(&ci->i_ceph_lock);
		do_sync_unlocked:
		err = ceph_sync_setxattr(dentry, name, value, size, flags);
		out:
		kfree(newname);

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