[PATCH 39/44 take 2] [UBI] character devices handling sub-unit header

[Artem Bityutskiy <dedekind@infradead.org>]

diff -auNrp tmp-from/drivers/mtd/ubi/cdev.h tmp-to/drivers/mtd/ubi/cdev.h
--- tmp-from/drivers/mtd/ubi/cdev.h	1970-01-01 02:00:00.000000000 +0200
+++ tmp-to/drivers/mtd/ubi/cdev.h	2007-02-17 18:07:27.000000000 +0200
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Artem B. Bityutskiy
+ */
+
+/*
+ * This is a part of the user interface unit and includes all the character
+ * device-related stuff.
+ */
+
+#ifndef __UBI_CDEV_H__
+#define __UBI_CDEV_H__
+
+/* Maximum sequence numbers of UBI and volume character device IOCTLs */
+#define UBI_CDEV_IOC_MAX_SEQ 2
+
+#ifndef CONFIG_MTD_UBI_USERSPACE_IO
+#define VOL_CDEV_IOC_MAX_SEQ 1
+#else
+#define VOL_CDEV_IOC_MAX_SEQ 2
+#endif
+
+struct ubi_info;
+struct inode;
+struct file;
+struct ubi_uif_volume;
+
+/**
+ * ubi_cdev_vol_init - initialize all the character device-related stuff for
+ * an UBI volume.
+ *
+ * @ubi: the UBI device description object
+ * @vol: user interfaces unit volume description object
+ *
+ * This function returns zero in case of success and a negative error code in
+ * case of failure.
+ */
+int ubi_cdev_vol_init(const struct ubi_info *ubi, struct ubi_uif_volume *vol);
+
+/**
+ * ubi_cdev_vol_close - close all the character device-related stuff for an
+ * UBI volume.
+ *
+ * @vol: user interfaces unit volume description object
+ */
+void ubi_cdev_vol_close(struct ubi_uif_volume *vol);
+
+/**
+ * ubi_cdev_init - initialize all the character device-related stuff for
+ * an UBI device.
+ *
+ * @ubi: the UBI device description object
+ *
+ * This function returns zero in case of success and a negative error code in
+ * case of failure.
+ */
+int ubi_cdev_init(struct ubi_info *ubi);
+
+/**
+ * ubi_cdev_close - close all the character device-related stuff for an UBI
+ * device.
+ *
+ * @ubi: the UBI device description object
+ */
+void ubi_cdev_close(const struct ubi_info *ubi);
+
+#endif /* !__UBI_CDEV_H__ */
-
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