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-rw-r--r--include/linux/zftape.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/include/linux/zftape.h b/include/linux/zftape.h
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--- /dev/null
+++ b/include/linux/zftape.h
@@ -0,0 +1,87 @@
+#ifndef _ZFTAPE_H
+#define _ZFTAPE_H
+
+/*
+ * Copyright (C) 1996, 1997 Claus-Justus Heine.
+
+ 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, 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; see the file COPYING. If not, write to
+ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ *
+ * $Source: /homes/cvs/ftape-stacked/include/linux/zftape.h,v $
+ * $Revision: 1.12 $
+ * $Date: 1997/10/21 11:02:37 $
+ *
+ * Special ioctl and other global info for the zftape VFS
+ * interface for the QIC-40/80/3010/3020 floppy-tape driver for
+ * Linux.
+ */
+
+#define ZFTAPE_VERSION "zftape for " FTAPE_VERSION
+
+#include <linux/ftape.h>
+
+#define ZFTAPE_LABEL "Ftape - The Linux Floppy Tape Project!"
+
+/* Bits of the minor device number that control the operation mode */
+#define ZFT_Q80_MODE (1 << 3)
+#define ZFT_ZIP_MODE (1 << 4)
+#define ZFT_RAW_MODE (1 << 5)
+#define ZFT_MINOR_OP_MASK (ZFT_Q80_MODE | \
+ ZFT_ZIP_MODE | \
+ ZFT_RAW_MODE)
+#define ZFT_MINOR_MASK (FTAPE_SEL_MASK | \
+ ZFT_MINOR_OP_MASK | \
+ FTAPE_NO_REWIND)
+
+#ifdef ZFT_OBSOLETE
+struct mtblksz {
+ unsigned int mt_blksz;
+};
+#define MTIOC_ZFTAPE_GETBLKSZ _IOR('m', 104, struct mtblksz)
+#endif
+
+#ifdef __KERNEL__
+
+extern int zft_init(void);
+
+static inline __s64 zft_div_blksz(__s64 value, __u32 blk_sz)
+{
+ if (blk_sz == 1) {
+ return value;
+ } else {
+ return (__s64)(((__u32)(value >> 10) + (blk_sz >> 10) - 1)
+ / (blk_sz >> 10));
+ }
+}
+
+static inline __s64 zft_mul_blksz(__s64 value, __u32 blk_sz)
+{
+ if (blk_sz == 1) {
+ return value;
+ } else {
+ /* if blk_sz != 1, then it is a multiple of 1024. In
+ * this case, `value' will also fit into 32 bits.
+ *
+ * Actually, this limits the capacity to 42
+ * bits. This is (2^32)*1024, roughly a thousand
+ * times 2GB, or 3 Terabytes. Hopefully this is enough
+ */
+ return(__s64)(((__u32)(value)*(blk_sz>>10))<<10);
+ }
+}
+
+#endif
+
+#endif
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