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-rw-r--r--drivers/char/ftape/zftape/Makefile36
-rw-r--r--drivers/char/ftape/zftape/zftape-buffers.c149
-rw-r--r--drivers/char/ftape/zftape/zftape-buffers.h55
-rw-r--r--drivers/char/ftape/zftape/zftape-ctl.c1417
-rw-r--r--drivers/char/ftape/zftape/zftape-ctl.h58
-rw-r--r--drivers/char/ftape/zftape/zftape-eof.c199
-rw-r--r--drivers/char/ftape/zftape/zftape-eof.h52
-rw-r--r--drivers/char/ftape/zftape/zftape-init.c377
-rw-r--r--drivers/char/ftape/zftape/zftape-init.h77
-rw-r--r--drivers/char/ftape/zftape/zftape-read.c377
-rw-r--r--drivers/char/ftape/zftape/zftape-read.h53
-rw-r--r--drivers/char/ftape/zftape/zftape-rw.c376
-rw-r--r--drivers/char/ftape/zftape/zftape-rw.h102
-rw-r--r--drivers/char/ftape/zftape/zftape-vtbl.c757
-rw-r--r--drivers/char/ftape/zftape/zftape-vtbl.h227
-rw-r--r--drivers/char/ftape/zftape/zftape-write.c483
-rw-r--r--drivers/char/ftape/zftape/zftape-write.h38
-rw-r--r--drivers/char/ftape/zftape/zftape_syms.c43
18 files changed, 0 insertions, 4876 deletions
diff --git a/drivers/char/ftape/zftape/Makefile b/drivers/char/ftape/zftape/Makefile
deleted file mode 100644
index 6d91c1f77c0..00000000000
--- a/drivers/char/ftape/zftape/Makefile
+++ /dev/null
@@ -1,36 +0,0 @@
-#
-# 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/ftape/zftape/Makefile,v $
-# $Revision: 1.4 $
-# $Date: 1997/10/05 19:18:58 $
-#
-# Makefile for the QIC-40/80/3010/3020 zftape interface VFS to
-# ftape
-#
-
-
-# ZFT_OBSOLETE - enable the MTIOC_ZFTAPE_GETBLKSZ ioctl. You should
-# leave this enabled for compatibility with taper.
-
-obj-$(CONFIG_ZFTAPE) += zftape.o
-
-zftape-objs := zftape-rw.o zftape-ctl.o zftape-read.o \
- zftape-write.o zftape-vtbl.o zftape-eof.o \
- zftape-init.o zftape-buffers.o zftape_syms.o
-
-EXTRA_CFLAGS := -DZFT_OBSOLETE
diff --git a/drivers/char/ftape/zftape/zftape-buffers.c b/drivers/char/ftape/zftape/zftape-buffers.c
deleted file mode 100644
index da06f138334..00000000000
--- a/drivers/char/ftape/zftape/zftape-buffers.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Copyright (C) 1995-1997 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/ftape/zftape/zftape-buffers.c,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:18:59 $
- *
- * This file contains the dynamic buffer allocation routines
- * of zftape
- */
-
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-
-#include <linux/zftape.h>
-
-#include <linux/vmalloc.h>
-
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-eof.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-write.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-rw.h"
-#include "../zftape/zftape-vtbl.h"
-
-/* global variables
- */
-
-/* local varibales
- */
-static unsigned int used_memory;
-static unsigned int peak_memory;
-
-void zft_memory_stats(void)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Memory usage (vmalloc allocations):\n"
- KERN_INFO "total allocated: %d\n"
- KERN_INFO "peak allocation: %d",
- used_memory, peak_memory);
- peak_memory = used_memory;
- TRACE_EXIT;
-}
-
-int zft_vcalloc_once(void *new, size_t size)
-{
- TRACE_FUN(ft_t_flow);
- if (zft_vmalloc_once(new, size) < 0) {
- TRACE_EXIT -ENOMEM;
- }
- memset(*(void **)new, '\0', size);
- TRACE_EXIT 0;
-}
-int zft_vmalloc_once(void *new, size_t size)
-{
- TRACE_FUN(ft_t_flow);
-
- if (*(void **)new != NULL || size == 0) {
- TRACE_EXIT 0;
- }
- if ((*(void **)new = vmalloc(size)) == NULL) {
- TRACE_EXIT -ENOMEM;
- }
- used_memory += size;
- if (peak_memory < used_memory) {
- peak_memory = used_memory;
- }
- TRACE_ABORT(0, ft_t_noise,
- "allocated buffer @ %p, %d bytes", *(void **)new, size);
-}
-int zft_vmalloc_always(void *new, size_t size)
-{
- TRACE_FUN(ft_t_flow);
-
- zft_vfree(new, size);
- TRACE_EXIT zft_vmalloc_once(new, size);
-}
-void zft_vfree(void *old, size_t size)
-{
- TRACE_FUN(ft_t_flow);
-
- if (*(void **)old) {
- vfree(*(void **)old);
- used_memory -= size;
- TRACE(ft_t_noise, "released buffer @ %p, %d bytes",
- *(void **)old, size);
- *(void **)old = NULL;
- }
- TRACE_EXIT;
-}
-
-void *zft_kmalloc(size_t size)
-{
- void *new;
-
- while ((new = kmalloc(size, GFP_KERNEL)) == NULL) {
- msleep_interruptible(100);
- }
- memset(new, 0, size);
- used_memory += size;
- if (peak_memory < used_memory) {
- peak_memory = used_memory;
- }
- return new;
-}
-
-void zft_kfree(void *old, size_t size)
-{
- kfree(old);
- used_memory -= size;
-}
-
-/* there are some more buffers that are allocated on demand.
- * cleanup_module() calles this function to be sure to have released
- * them
- */
-void zft_uninit_mem(void)
-{
- TRACE_FUN(ft_t_flow);
-
- zft_vfree(&zft_hseg_buf, FT_SEGMENT_SIZE);
- zft_vfree(&zft_deblock_buf, FT_SEGMENT_SIZE); zft_deblock_segment = -1;
- zft_free_vtbl();
- if (zft_cmpr_lock(0 /* don't load */) == 0) {
- (*zft_cmpr_ops->cleanup)();
- (*zft_cmpr_ops->reset)(); /* unlock it again */
- }
- zft_memory_stats();
- TRACE_EXIT;
-}
diff --git a/drivers/char/ftape/zftape/zftape-buffers.h b/drivers/char/ftape/zftape/zftape-buffers.h
deleted file mode 100644
index 798e3128c68..00000000000
--- a/drivers/char/ftape/zftape/zftape-buffers.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef _FTAPE_DYNMEM_H
-#define _FTAPE_DYNMEM_H
-
-/*
- * Copyright (C) 1995-1997 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/ftape/zftape/zftape-buffers.h,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:18:59 $
- *
- * memory allocation routines.
- *
- */
-
-/* we do not allocate all of the really large buffer memory before
- * someone tries to open the drive. ftape_open() may fail with
- * -ENOMEM, but that's better having 200k of vmalloced memory which
- * cannot be swapped out.
- */
-
-extern void zft_memory_stats(void);
-extern int zft_vmalloc_once(void *new, size_t size);
-extern int zft_vcalloc_once(void *new, size_t size);
-extern int zft_vmalloc_always(void *new, size_t size);
-extern void zft_vfree(void *old, size_t size);
-extern void *zft_kmalloc(size_t size);
-extern void zft_kfree(void *old, size_t size);
-
-/* called by cleanup_module()
- */
-extern void zft_uninit_mem(void);
-
-#endif
-
-
-
-
-
-
-
diff --git a/drivers/char/ftape/zftape/zftape-ctl.c b/drivers/char/ftape/zftape/zftape-ctl.c
deleted file mode 100644
index 22ba0f5d00c..00000000000
--- a/drivers/char/ftape/zftape/zftape-ctl.c
+++ /dev/null
@@ -1,1417 +0,0 @@
-/*
- * 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/ftape/zftape/zftape-ctl.c,v $
- * $Revision: 1.2.6.2 $
- * $Date: 1997/11/14 18:07:33 $
- *
- * This file contains the non-read/write zftape functions
- * for the QIC-40/80/3010/3020 floppy-tape driver for Linux.
- */
-
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/fcntl.h>
-
-#include <linux/zftape.h>
-
-#include <asm/uaccess.h>
-
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-eof.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-write.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-rw.h"
-#include "../zftape/zftape-vtbl.h"
-
-/* Global vars.
- */
-int zft_write_protected; /* this is when cartridge rdonly or O_RDONLY */
-int zft_header_read;
-int zft_offline;
-unsigned int zft_unit;
-int zft_resid;
-int zft_mt_compression;
-
-/* Local vars.
- */
-static int going_offline;
-
-typedef int (mt_fun)(int *argptr);
-typedef int (*mt_funp)(int *argptr);
-typedef struct
-{
- mt_funp function;
- unsigned offline : 1; /* op permitted if offline or no_tape */
- unsigned write_protected : 1; /* op permitted if write-protected */
- unsigned not_formatted : 1; /* op permitted if tape not formatted */
- unsigned raw_mode : 1; /* op permitted if zft_mode == 0 */
- unsigned need_idle_state : 1; /* need to call def_idle_state */
- char *name;
-} fun_entry;
-
-static mt_fun mt_dummy, mt_reset, mt_fsr, mt_bsr, mt_rew, mt_offl, mt_nop,
- mt_weof, mt_erase, mt_ras2, mt_setblk, mt_setdensity,
- mt_seek, mt_tell, mt_reten, mt_eom, mt_fsf, mt_bsf,
- mt_fsfm, mt_bsfm, mt_setdrvbuffer, mt_compression;
-
-static fun_entry mt_funs[]=
-{
- {mt_reset , 1, 1, 1, 1, 0, "MT_RESET" }, /* 0 */
- {mt_fsf , 0, 1, 0, 0, 1, "MT_FSF" },
- {mt_bsf , 0, 1, 0, 0, 1, "MT_BSF" },
- {mt_fsr , 0, 1, 0, 1, 1, "MT_FSR" },
- {mt_bsr , 0, 1, 0, 1, 1, "MT_BSR" },
- {mt_weof , 0, 0, 0, 0, 0, "MT_WEOF" }, /* 5 */
- {mt_rew , 0, 1, 1, 1, 0, "MT_REW" },
- {mt_offl , 0, 1, 1, 1, 0, "MT_OFFL" },
- {mt_nop , 1, 1, 1, 1, 0, "MT_NOP" },
- {mt_reten , 0, 1, 1, 1, 0, "MT_RETEN" },
- {mt_bsfm , 0, 1, 0, 0, 1, "MT_BSFM" }, /* 10 */
- {mt_fsfm , 0, 1, 0, 0, 1, "MT_FSFM" },
- {mt_eom , 0, 1, 0, 0, 1, "MT_EOM" },
- {mt_erase , 0, 0, 0, 1, 0, "MT_ERASE" },
- {mt_dummy , 1, 1, 1, 1, 0, "MT_RAS1" },
- {mt_ras2 , 0, 0, 0, 1, 0, "MT_RAS2" },
- {mt_dummy , 1, 1, 1, 1, 0, "MT_RAS3" },
- {mt_dummy , 1, 1, 1, 1, 0, "UNKNOWN" },
- {mt_dummy , 1, 1, 1, 1, 0, "UNKNOWN" },
- {mt_dummy , 1, 1, 1, 1, 0, "UNKNOWN" },
- {mt_setblk , 1, 1, 1, 1, 1, "MT_SETBLK"}, /* 20 */
- {mt_setdensity , 1, 1, 1, 1, 0, "MT_SETDENSITY"},
- {mt_seek , 0, 1, 0, 1, 1, "MT_SEEK" },
- {mt_dummy , 0, 1, 0, 1, 1, "MT_TELL" }, /* wr-only ?! */
- {mt_setdrvbuffer, 1, 1, 1, 1, 0, "MT_SETDRVBUFFER" },
- {mt_dummy , 1, 1, 1, 1, 0, "MT_FSS" }, /* 25 */
- {mt_dummy , 1, 1, 1, 1, 0, "MT_BSS" },
- {mt_dummy , 1, 1, 1, 1, 0, "MT_WSM" },
- {mt_dummy , 1, 1, 1, 1, 0, "MT_LOCK" },
- {mt_dummy , 1, 1, 1, 1, 0, "MT_UNLOCK"},
- {mt_dummy , 1, 1, 1, 1, 0, "MT_LOAD" }, /* 30 */
- {mt_dummy , 1, 1, 1, 1, 0, "MT_UNLOAD"},
- {mt_compression , 1, 1, 1, 0, 1, "MT_COMPRESSION"},
- {mt_dummy , 1, 1, 1, 1, 0, "MT_SETPART"},
- {mt_dummy , 1, 1, 1, 1, 0, "MT_MKPART"}
-};
-
-#define NR_MT_CMDS NR_ITEMS(mt_funs)
-
-void zft_reset_position(zft_position *pos)
-{
- TRACE_FUN(ft_t_flow);
-
- pos->seg_byte_pos =
- pos->volume_pos = 0;
- if (zft_header_read) {
- /* need to keep track of the volume table and
- * compression map. We therefor simply
- * position at the beginning of the first
- * volume. This covers old ftape archives as
- * well has various flavours of the
- * compression map segments. The worst case is
- * that the compression map shows up as a
- * additional volume in front of all others.
- */
- pos->seg_pos = zft_find_volume(0)->start_seg;
- pos->tape_pos = zft_calc_tape_pos(pos->seg_pos);
- } else {
- pos->tape_pos = 0;
- pos->seg_pos = -1;
- }
- zft_just_before_eof = 0;
- zft_deblock_segment = -1;
- zft_io_state = zft_idle;
- zft_zap_read_buffers();
- zft_prevent_flush();
- /* unlock the compresison module if it is loaded.
- * The zero arg means not to try to load the module.
- */
- if (zft_cmpr_lock(0) == 0) {
- (*zft_cmpr_ops->reset)(); /* unlock */
- }
- TRACE_EXIT;
-}
-
-static void zft_init_driver(void)
-{
- TRACE_FUN(ft_t_flow);
-
- zft_resid =
- zft_header_read =
- zft_old_ftape =
- zft_offline =
- zft_write_protected =
- going_offline =
- zft_mt_compression =
- zft_header_changed =
- zft_volume_table_changed =
- zft_written_segments = 0;
- zft_blk_sz = CONFIG_ZFT_DFLT_BLK_SZ;
- zft_reset_position(&zft_pos); /* does most of the stuff */
- ftape_zap_read_buffers();
- ftape_set_state(idle);
- TRACE_EXIT;
-}
-
-int zft_def_idle_state(void)
-{
- int result = 0;
- TRACE_FUN(ft_t_flow);
-
- if (!zft_header_read) {
- result = zft_read_header_segments();
- } else if ((result = zft_flush_buffers()) >= 0 && zft_qic_mode) {
- /* don't move past eof
- */
- (void)zft_close_volume(&zft_pos);
- }
- if (ftape_abort_operation() < 0) {
- TRACE(ft_t_warn, "ftape_abort_operation() failed");
- result = -EIO;
- }
- /* clear remaining read buffers */
- zft_zap_read_buffers();
- zft_io_state = zft_idle;
- TRACE_EXIT result;
-}
-
-/*****************************************************************************
- * *
- * functions for the MTIOCTOP commands *
- * *
- *****************************************************************************/
-
-static int mt_dummy(int *dummy)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE_EXIT -ENOSYS;
-}
-
-static int mt_reset(int *dummy)
-{
- TRACE_FUN(ft_t_flow);
-
- (void)ftape_seek_to_bot();
- TRACE_CATCH(ftape_reset_drive(),
- zft_init_driver(); zft_uninit_mem(); zft_offline = 1);
- /* fake a re-open of the device. This will set all flage and
- * allocate buffers as appropriate. The new tape condition will
- * force the open routine to do anything we need.
- */
- TRACE_CATCH(_zft_open(-1 /* fake reopen */, 0 /* dummy */),);
- TRACE_EXIT 0;
-}
-
-static int mt_fsf(int *arg)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- result = zft_skip_volumes(*arg, &zft_pos);
- zft_just_before_eof = 0;
- TRACE_EXIT result;
-}
-
-static int mt_bsf(int *arg)
-{
- int result = 0;
- TRACE_FUN(ft_t_flow);
-
- if (*arg != 0) {
- result = zft_skip_volumes(-*arg + 1, &zft_pos);
- }
- TRACE_EXIT result;
-}
-
-static int seek_block(__s64 data_offset,
- __s64 block_increment,
- zft_position *pos)
-{
- int result = 0;
- __s64 new_block_pos;
- __s64 vol_block_count;
- const zft_volinfo *volume;
- int exceed;
- TRACE_FUN(ft_t_flow);
-
- volume = zft_find_volume(pos->seg_pos);
- if (volume->start_seg == 0 || volume->end_seg == 0) {
- TRACE_EXIT -EIO;
- }
- new_block_pos = (zft_div_blksz(data_offset, volume->blk_sz)
- + block_increment);
- vol_block_count = zft_div_blksz(volume->size, volume->blk_sz);
- if (new_block_pos < 0) {
- TRACE(ft_t_noise,
- "new_block_pos " LL_X " < 0", LL(new_block_pos));
- zft_resid = (int)new_block_pos;
- new_block_pos = 0;
- exceed = 1;
- } else if (new_block_pos > vol_block_count) {
- TRACE(ft_t_noise,
- "new_block_pos " LL_X " exceeds size of volume " LL_X,
- LL(new_block_pos), LL(vol_block_count));
- zft_resid = (int)(vol_block_count - new_block_pos);
- new_block_pos = vol_block_count;
- exceed = 1;
- } else {
- exceed = 0;
- }
- if (zft_use_compression && volume->use_compression) {
- TRACE_CATCH(zft_cmpr_lock(1 /* try to load */),);
- result = (*zft_cmpr_ops->seek)(new_block_pos, pos, volume,
- zft_deblock_buf);
- pos->tape_pos = zft_calc_tape_pos(pos->seg_pos);
- pos->tape_pos += pos->seg_byte_pos;
- } else {
- pos->volume_pos = zft_mul_blksz(new_block_pos, volume->blk_sz);
- pos->tape_pos = zft_calc_tape_pos(volume->start_seg);
- pos->tape_pos += pos->volume_pos;
- pos->seg_pos = zft_calc_seg_byte_coord(&pos->seg_byte_pos,
- pos->tape_pos);
- }
- zft_just_before_eof = volume->size == pos->volume_pos;
- if (zft_just_before_eof) {
- /* why this? because zft_file_no checks agains start
- * and end segment of a volume. We do not want to
- * advance to the next volume with this function.
- */
- TRACE(ft_t_noise, "set zft_just_before_eof");
- zft_position_before_eof(pos, volume);
- }
- TRACE(ft_t_noise, "\n"
- KERN_INFO "new_seg_pos : %d\n"
- KERN_INFO "new_tape_pos: " LL_X "\n"
- KERN_INFO "vol_size : " LL_X "\n"
- KERN_INFO "seg_byte_pos: %d\n"
- KERN_INFO "blk_sz : %d",
- pos->seg_pos, LL(pos->tape_pos),
- LL(volume->size), pos->seg_byte_pos,
- volume->blk_sz);
- if (!exceed) {
- zft_resid = new_block_pos - zft_div_blksz(pos->volume_pos,
- volume->blk_sz);
- }
- if (zft_resid < 0) {
- zft_resid = -zft_resid;
- }
- TRACE_EXIT ((exceed || zft_resid != 0) && result >= 0) ? -EINVAL : result;
-}
-
-static int mt_fsr(int *arg)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- result = seek_block(zft_pos.volume_pos, *arg, &zft_pos);
- TRACE_EXIT result;
-}
-
-static int mt_bsr(int *arg)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- result = seek_block(zft_pos.volume_pos, -*arg, &zft_pos);
- TRACE_EXIT result;
-}
-
-static int mt_weof(int *arg)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- TRACE_CATCH(zft_flush_buffers(),);
- result = zft_weof(*arg, &zft_pos);
- TRACE_EXIT result;
-}
-
-static int mt_rew(int *dummy)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- if(zft_header_read) {
- (void)zft_def_idle_state();
- }
- result = ftape_seek_to_bot();
- zft_reset_position(&zft_pos);
- TRACE_EXIT result;
-}
-
-static int mt_offl(int *dummy)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- going_offline= 1;
- result = mt_rew(NULL);
- TRACE_EXIT result;
-}
-
-static int mt_nop(int *dummy)
-{
- TRACE_FUN(ft_t_flow);
- /* should we set tape status?
- */
- if (!zft_offline) { /* offline includes no_tape */
- (void)zft_def_idle_state();
- }
- TRACE_EXIT 0;
-}
-
-static int mt_reten(int *dummy)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- if(zft_header_read) {
- (void)zft_def_idle_state();
- }
- result = ftape_seek_to_eot();
- if (result >= 0) {
- result = ftape_seek_to_bot();
- }
- TRACE_EXIT(result);
-}
-
-static int fsfbsfm(int arg, zft_position *pos)
-{
- const zft_volinfo *vtbl;
- __s64 block_pos;
- TRACE_FUN(ft_t_flow);
-
- /* What to do? This should seek to the next file-mark and
- * position BEFORE. That is, a next write would just extend
- * the current file. Well. Let's just seek to the end of the
- * current file, if count == 1. If count > 1, then do a
- * "mt_fsf(count - 1)", and then seek to the end of that file.
- * If count == 0, do nothing
- */
- if (arg == 0) {
- TRACE_EXIT 0;
- }
- zft_just_before_eof = 0;
- TRACE_CATCH(zft_skip_volumes(arg < 0 ? arg : arg-1, pos),
- if (arg > 0) {
- zft_resid ++;
- });
- vtbl = zft_find_volume(pos->seg_pos);
- block_pos = zft_div_blksz(vtbl->size, vtbl->blk_sz);
- (void)seek_block(0, block_pos, pos);
- if (pos->volume_pos != vtbl->size) {
- zft_just_before_eof = 0;
- zft_resid = 1;
- /* we didn't managed to go there */
- TRACE_ABORT(-EIO, ft_t_err,
- "wanted file position " LL_X ", arrived at " LL_X,
- LL(vtbl->size), LL(pos->volume_pos));
- }
- zft_just_before_eof = 1;
- TRACE_EXIT 0;
-}
-
-static int mt_bsfm(int *arg)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- result = fsfbsfm(-*arg, &zft_pos);
- TRACE_EXIT result;
-}
-
-static int mt_fsfm(int *arg)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- result = fsfbsfm(*arg, &zft_pos);
- TRACE_EXIT result;
-}
-
-static int mt_eom(int *dummy)
-{
- TRACE_FUN(ft_t_flow);
-
- zft_skip_to_eom(&zft_pos);
- TRACE_EXIT 0;
-}
-
-static int mt_erase(int *dummy)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- result = zft_erase();
- TRACE_EXIT result;
-}
-
-static int mt_ras2(int *dummy)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- result = -ENOSYS;
- TRACE_EXIT result;
-}
-
-/* Sets the new blocksize in BYTES
- *
- */
-static int mt_setblk(int *new_size)
-{
- TRACE_FUN(ft_t_flow);
-
- if((unsigned int)(*new_size) > ZFT_MAX_BLK_SZ) {
- TRACE_ABORT(-EINVAL, ft_t_info,
- "desired blk_sz (%d) should be <= %d bytes",
- *new_size, ZFT_MAX_BLK_SZ);
- }
- if ((*new_size & (FT_SECTOR_SIZE-1)) != 0) {
- TRACE_ABORT(-EINVAL, ft_t_info,
- "desired blk_sz (%d) must be a multiple of %d bytes",
- *new_size, FT_SECTOR_SIZE);
- }
- if (*new_size == 0) {
- if (zft_use_compression) {
- TRACE_ABORT(-EINVAL, ft_t_info,
- "Variable block size not yet "
- "supported with compression");
- }
- *new_size = 1;
- }
- zft_blk_sz = *new_size;
- TRACE_EXIT 0;
-}
-
-static int mt_setdensity(int *arg)
-{
- TRACE_FUN(ft_t_flow);
-
- SET_TRACE_LEVEL(*arg);
- TRACE(TRACE_LEVEL, "tracing set to %d", TRACE_LEVEL);
- if ((int)TRACE_LEVEL != *arg) {
- TRACE_EXIT -EINVAL;
- }
- TRACE_EXIT 0;
-}
-
-static int mt_seek(int *new_block_pos)
-{
- int result= 0;
- TRACE_FUN(ft_t_any);
-
- result = seek_block(0, (__s64)*new_block_pos, &zft_pos);
- TRACE_EXIT result;
-}
-
-/* OK, this is totally different from SCSI, but the worst thing that can
- * happen is that there is not enough defragmentated memory that can be
- * allocated. Also, there is a hardwired limit of 16 dma buffers in the
- * stock ftape module. This shouldn't bring the system down.
- *
- * NOTE: the argument specifies the total number of dma buffers to use.
- * The driver needs at least 3 buffers to function at all.
- *
- */
-static int mt_setdrvbuffer(int *cnt)
-{
- TRACE_FUN(ft_t_flow);
-
- if (*cnt < 3) {
- TRACE_EXIT -EINVAL;
- }
- TRACE_CATCH(ftape_set_nr_buffers(*cnt),);
- TRACE_EXIT 0;
-}
-/* return the block position from start of volume
- */
-static int mt_tell(int *arg)
-{
- TRACE_FUN(ft_t_flow);
-
- *arg = zft_div_blksz(zft_pos.volume_pos,
- zft_find_volume(zft_pos.seg_pos)->blk_sz);
- TRACE_EXIT 0;
-}
-
-static int mt_compression(int *arg)
-{
- TRACE_FUN(ft_t_flow);
-
- /* Ok. We could also check whether compression is available at
- * all by trying to load the compression module. We could
- * also check for a block size of 1 byte which is illegal
- * with compression. Instead of doing it here we rely on
- * zftape_write() to do the proper checks.
- */
- if ((unsigned int)*arg > 1) {
- TRACE_EXIT -EINVAL;
- }
- if (*arg != 0 && zft_blk_sz == 1) { /* variable block size */
- TRACE_ABORT(-EINVAL, ft_t_info,
- "Compression not yet supported "
- "with variable block size");
- }
- zft_mt_compression = *arg;
- if ((zft_unit & ZFT_ZIP_MODE) == 0) {
- zft_use_compression = zft_mt_compression;
- }
- TRACE_EXIT 0;
-}
-
-/* check whether write access is allowed. Write access is denied when
- * + zft_write_protected == 1 -- this accounts for either hard write
- * protection of the cartridge or for
- * O_RDONLY access mode of the tape device
- * + zft_offline == 1 -- this meany that there is either no tape
- * or that the MTOFFLINE ioctl has been
- * previously issued (`soft eject')
- * + ft_formatted == 0 -- this means that the cartridge is not
- * formatted
- * Then we distinuguish two cases. When zft_qic_mode is TRUE, then we try
- * to emulate a `traditional' (aka SCSI like) UN*X tape device. Therefore we
- * deny writes when
- * + zft_qic_mode ==1 &&
- * (!zft_tape_at_lbot() && -- tape no at logical BOT
- * !(zft_tape_at_eom() || -- tape not at logical EOM (or EOD)
- * (zft_tape_at_eom() &&
- * zft_old_ftape()))) -- we can't add new volume to tapes
- * written by old ftape because ftape
- * don't use the volume table
- *
- * when the drive is in true raw mode (aka /dev/rawft0) then we don't
- * care about LBOT and EOM conditions. This device is intended for a
- * user level program that wants to truly implement the QIC-80 compliance
- * at the logical data layout level of the cartridge, i.e. implement all
- * that volume table and volume directory stuff etc.<
- */
-int zft_check_write_access(zft_position *pos)
-{
- TRACE_FUN(ft_t_flow);
-
- if (zft_offline) { /* offline includes no_tape */
- TRACE_ABORT(-ENXIO,
- ft_t_info, "tape is offline or no cartridge");
- }
- if (!ft_formatted) {
- TRACE_ABORT(-EACCES, ft_t_info, "tape is not formatted");
- }
- if (zft_write_protected) {
- TRACE_ABORT(-EACCES, ft_t_info, "cartridge write protected");
- }
- if (zft_qic_mode) {
- /* check BOT condition */
- if (!zft_tape_at_lbot(pos)) {
- /* protect cartridges written by old ftape if
- * not at BOT because they use the vtbl
- * segment for storing data
- */
- if (zft_old_ftape) {
- TRACE_ABORT(-EACCES, ft_t_warn,
- "Cannot write to cartridges written by old ftape when not at BOT");
- }
- /* not at BOT, but allow writes at EOD, of course
- */
- if (!zft_tape_at_eod(pos)) {
- TRACE_ABORT(-EACCES, ft_t_info,
- "tape not at BOT and not at EOD");
- }
- }
- /* fine. Now the tape is either at BOT or at EOD. */
- }
- /* or in raw mode in which case we don't care about BOT and EOD */
- TRACE_EXIT 0;
-}
-
-/* OPEN routine called by kernel-interface code
- *
- * NOTE: this is also called by mt_reset() with dev_minor == -1
- * to fake a reopen after a reset.
- */
-int _zft_open(unsigned int dev_minor, unsigned int access_mode)
-{
- static unsigned int tape_unit;
- static unsigned int file_access_mode;
- int result;
- TRACE_FUN(ft_t_flow);
-
- if ((int)dev_minor == -1) {
- /* fake reopen */
- zft_unit = tape_unit;
- access_mode = file_access_mode;
- zft_init_driver(); /* reset all static data to defaults */
- } else {
- tape_unit = dev_minor;
- file_access_mode = access_mode;
- if ((result = ftape_enable(FTAPE_SEL(dev_minor))) < 0) {
- TRACE_ABORT(-ENXIO, ft_t_err,
- "ftape_enable failed: %d", result);
- }
- if (ft_new_tape || ft_no_tape || !ft_formatted ||
- (FTAPE_SEL(zft_unit) != FTAPE_SEL(dev_minor)) ||
- (zft_unit & ZFT_RAW_MODE) != (dev_minor & ZFT_RAW_MODE)) {
- /* reset all static data to defaults,
- */
- zft_init_driver();
- }
- zft_unit = dev_minor;
- }
- zft_set_flags(zft_unit); /* decode the minor bits */
- if (zft_blk_sz == 1 && zft_use_compression) {
- ftape_disable(); /* resets ft_no_tape */
- TRACE_ABORT(-ENODEV, ft_t_warn, "Variable block size not yet "
- "supported with compression");
- }
- /* no need for most of the buffers when no tape or not
- * formatted. for the read/write operations, it is the
- * regardless whether there is no tape, a not-formatted tape
- * or the whether the driver is soft offline.
- * Nevertheless we allow some ioctls with non-formatted tapes,
- * like rewind and reset.
- */
- if (ft_no_tape || !ft_formatted) {
- zft_uninit_mem();
- }
- if (ft_no_tape) {
- zft_offline = 1; /* so we need not test two variables */
- }
- if ((access_mode == O_WRONLY || access_mode == O_RDWR) &&
- (ft_write_protected || ft_no_tape)) {
- ftape_disable(); /* resets ft_no_tape */
- TRACE_ABORT(ft_no_tape ? -ENXIO : -EROFS,
- ft_t_warn, "wrong access mode %s cartridge",
- ft_no_tape ? "without a" : "with write protected");
- }
- zft_write_protected = (access_mode == O_RDONLY ||
- ft_write_protected != 0);
- if (zft_write_protected) {
- TRACE(ft_t_noise,
- "read only access mode: %d, "
- "drive write protected: %d",
- access_mode == O_RDONLY,
- ft_write_protected != 0);
- }
- if (!zft_offline) {
- TRACE_CATCH(zft_vmalloc_once(&zft_deblock_buf,FT_SEGMENT_SIZE),
- ftape_disable());
- }
- /* zft_seg_pos should be greater than the vtbl segpos but not
- * if in compatibility mode and only after we read in the
- * header segments
- *
- * might also be a problem if the user makes a backup with a
- * *qft* device and rewinds it with a raw device.
- */
- if (zft_qic_mode &&
- !zft_old_ftape &&
- zft_pos.seg_pos >= 0 &&
- zft_header_read &&
- zft_pos.seg_pos <= ft_first_data_segment) {
- TRACE(ft_t_noise, "you probably mixed up the zftape devices!");
- zft_reset_position(&zft_pos);
- }
- TRACE_EXIT 0;
-}
-
-/* RELEASE routine called by kernel-interface code
- */
-int _zft_close(void)
-{
- int result = 0;
- TRACE_FUN(ft_t_flow);
-
- if (zft_offline) {
- /* call the hardware release routine. Puts the drive offline */
- ftape_disable();
- TRACE_EXIT 0;
- }
- if (!(ft_write_protected || zft_old_ftape)) {
- result = zft_flush_buffers();
- TRACE(ft_t_noise, "writing file mark at current position");
- if (zft_qic_mode && zft_close_volume(&zft_pos) == 0) {
- zft_move_past_eof(&zft_pos);
- }
- if ((zft_tape_at_lbot(&zft_pos) ||
- !(zft_unit & FTAPE_NO_REWIND))) {
- if (result >= 0) {
- result = zft_update_header_segments();
- } else {
- TRACE(ft_t_err,
- "Error: unable to update header segments");
- }
- }
- }
- ftape_abort_operation();
- if (!(zft_unit & FTAPE_NO_REWIND)) {
- TRACE(ft_t_noise, "rewinding tape");
- if (ftape_seek_to_bot() < 0 && result >= 0) {
- result = -EIO; /* keep old value */
- }
- zft_reset_position(&zft_pos);
- }
- zft_zap_read_buffers();
- /* now free up memory as much as possible. We don't destroy
- * the deblock buffer if it containes a valid segment.
- */
- if (zft_deblock_segment == -1) {
- zft_vfree(&zft_deblock_buf, FT_SEGMENT_SIZE);
- }
- /* high level driver status, forces creation of a new volume
- * when calling ftape_write again and not zft_just_before_eof
- */
- zft_io_state = zft_idle;
- if (going_offline) {
- zft_init_driver();
- zft_uninit_mem();
- going_offline = 0;
- zft_offline = 1;
- } else if (zft_cmpr_lock(0 /* don't load */) == 0) {
- (*zft_cmpr_ops->reset)(); /* unlock it again */
- }
- zft_memory_stats();
- /* call the hardware release routine. Puts the drive offline */
- ftape_disable();
- TRACE_EXIT result;
-}
-
-/*
- * the wrapper function around the wrapper MTIOCTOP ioctl
- */
-static int mtioctop(struct mtop *mtop, int arg_size)
-{
- int result = 0;
- fun_entry *mt_fun_entry;
- TRACE_FUN(ft_t_flow);
-
- if (arg_size != sizeof(struct mtop) || mtop->mt_op >= NR_MT_CMDS) {
- TRACE_EXIT -EINVAL;
- }
- TRACE(ft_t_noise, "calling MTIOCTOP command: %s",
- mt_funs[mtop->mt_op].name);
- mt_fun_entry= &mt_funs[mtop->mt_op];
- zft_resid = mtop->mt_count;
- if (!mt_fun_entry->offline && zft_offline) {
- if (ft_no_tape) {
- TRACE_ABORT(-ENXIO, ft_t_info, "no tape present");
- } else {
- TRACE_ABORT(-ENXIO, ft_t_info, "drive is offline");
- }
- }
- if (!mt_fun_entry->not_formatted && !ft_formatted) {
- TRACE_ABORT(-EACCES, ft_t_info, "tape is not formatted");
- }
- if (!mt_fun_entry->write_protected) {
- TRACE_CATCH(zft_check_write_access(&zft_pos),);
- }
- if (mt_fun_entry->need_idle_state && !(zft_offline || !ft_formatted)) {
- TRACE_CATCH(zft_def_idle_state(),);
- }
- if (!zft_qic_mode && !mt_fun_entry->raw_mode) {
- TRACE_ABORT(-EACCES, ft_t_info,
-"Drive needs to be in QIC-80 compatibility mode for this command");
- }
- result = (mt_fun_entry->function)(&mtop->mt_count);
- if (zft_tape_at_lbot(&zft_pos)) {
- TRACE_CATCH(zft_update_header_segments(),);
- }
- if (result >= 0) {
- zft_resid = 0;
- }
- TRACE_EXIT result;
-}
-
-/*
- * standard MTIOCGET ioctl
- */
-static int mtiocget(struct mtget *mtget, int arg_size)
-{
- const zft_volinfo *volume;
- __s64 max_tape_pos;
- TRACE_FUN(ft_t_flow);
-
- if (arg_size != sizeof(struct mtget)) {
- TRACE_ABORT(-EINVAL, ft_t_info, "bad argument size: %d",
- arg_size);
- }
- mtget->mt_type = ft_drive_type.vendor_id + 0x800000;
- mtget->mt_dsreg = ft_last_status.space;
- mtget->mt_erreg = ft_last_error.space; /* error register */
- mtget->mt_resid = zft_resid; /* residuum of writes, reads and
- * MTIOCTOP commands
- */
- if (!zft_offline) { /* neither no_tape nor soft offline */
- mtget->mt_gstat = GMT_ONLINE(~0UL);
- /* should rather return the status of the cartridge
- * than the access mode of the file, therefor use
- * ft_write_protected, not zft_write_protected
- */
- if (ft_write_protected) {
- mtget->mt_gstat |= GMT_WR_PROT(~0UL);
- }
- if(zft_header_read) { /* this catches non-formatted */
- volume = zft_find_volume(zft_pos.seg_pos);
- mtget->mt_fileno = volume->count;
- max_tape_pos = zft_capacity - zft_blk_sz;
- if (zft_use_compression) {
- max_tape_pos -= ZFT_CMPR_OVERHEAD;
- }
- if (zft_tape_at_eod(&zft_pos)) {
- mtget->mt_gstat |= GMT_EOD(~0UL);
- }
- if (zft_pos.tape_pos > max_tape_pos) {
- mtget->mt_gstat |= GMT_EOT(~0UL);
- }
- mtget->mt_blkno = zft_div_blksz(zft_pos.volume_pos,
- volume->blk_sz);
- if (zft_just_before_eof) {
- mtget->mt_gstat |= GMT_EOF(~0UL);
- }
- if (zft_tape_at_lbot(&zft_pos)) {
- mtget->mt_gstat |= GMT_BOT(~0UL);
- }
- } else {
- mtget->mt_fileno = mtget->mt_blkno = -1;
- if (mtget->mt_dsreg & QIC_STATUS_AT_BOT) {
- mtget->mt_gstat |= GMT_BOT(~0UL);
- }
- }
- } else {
- if (ft_no_tape) {
- mtget->mt_gstat = GMT_DR_OPEN(~0UL);
- } else {
- mtget->mt_gstat = 0UL;
- }
- mtget->mt_fileno = mtget->mt_blkno = -1;
- }
- TRACE_EXIT 0;
-}
-
-#ifdef MTIOCRDFTSEG
-/*
- * Read a floppy tape segment. This is useful for manipulating the
- * volume table, and read the old header segment before re-formatting
- * the cartridge.
- */
-static int mtiocrdftseg(struct mtftseg * mtftseg, int arg_size)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Mag tape ioctl command: MTIOCRDFTSEG");
- if (zft_qic_mode) {
- TRACE_ABORT(-EACCES, ft_t_info,
- "driver needs to be in raw mode for this ioctl");
- }
- if (arg_size != sizeof(struct mtftseg)) {
- TRACE_ABORT(-EINVAL, ft_t_info, "bad argument size: %d",
- arg_size);
- }
- if (zft_offline) {
- TRACE_EXIT -ENXIO;
- }
- if (mtftseg->mt_mode != FT_RD_SINGLE &&
- mtftseg->mt_mode != FT_RD_AHEAD) {
- TRACE_ABORT(-EINVAL, ft_t_info, "invalid read mode");
- }
- if (!ft_formatted) {
- TRACE_EXIT -EACCES; /* -ENXIO ? */
-
- }
- if (!zft_header_read) {
- TRACE_CATCH(zft_def_idle_state(),);
- }
- if (mtftseg->mt_segno > ft_last_data_segment) {
- TRACE_ABORT(-EINVAL, ft_t_info, "segment number is too large");
- }
- mtftseg->mt_result = ftape_read_segment(mtftseg->mt_segno,
- zft_deblock_buf,
- mtftseg->mt_mode);
- if (mtftseg->mt_result < 0) {
- /* a negativ result is not an ioctl error. if
- * the user wants to read damaged tapes,
- * it's up to her/him
- */
- TRACE_EXIT 0;
- }
- if (copy_to_user(mtftseg->mt_data,
- zft_deblock_buf,
- mtftseg->mt_result) != 0) {
- TRACE_EXIT -EFAULT;
- }
- TRACE_EXIT 0;
-}
-#endif
-
-#ifdef MTIOCWRFTSEG
-/*
- * write a floppy tape segment. This version features writing of
- * deleted address marks, and gracefully ignores the (software)
- * ft_formatted flag to support writing of header segments after
- * formatting.
- */
-static int mtiocwrftseg(struct mtftseg * mtftseg, int arg_size)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Mag tape ioctl command: MTIOCWRFTSEG");
- if (zft_write_protected || zft_qic_mode) {
- TRACE_EXIT -EACCES;
- }
- if (arg_size != sizeof(struct mtftseg)) {
- TRACE_ABORT(-EINVAL, ft_t_info, "bad argument size: %d",
- arg_size);
- }
- if (zft_offline) {
- TRACE_EXIT -ENXIO;
- }
- if (mtftseg->mt_mode != FT_WR_ASYNC &&
- mtftseg->mt_mode != FT_WR_MULTI &&
- mtftseg->mt_mode != FT_WR_SINGLE &&
- mtftseg->mt_mode != FT_WR_DELETE) {
- TRACE_ABORT(-EINVAL, ft_t_info, "invalid write mode");
- }
- /*
- * We don't check for ft_formatted, because this gives
- * only the software status of the driver.
- *
- * We assume that the user knows what it is
- * doing. And rely on the low level stuff to fail
- * when the tape isn't formatted. We only make sure
- * that The header segment buffer is allocated,
- * because it holds the bad sector map.
- */
- if (zft_hseg_buf == NULL) {
- TRACE_EXIT -ENXIO;
- }
- if (mtftseg->mt_mode != FT_WR_DELETE) {
- if (copy_from_user(zft_deblock_buf,
- mtftseg->mt_data,
- FT_SEGMENT_SIZE) != 0) {
- TRACE_EXIT -EFAULT;
- }
- }
- mtftseg->mt_result = ftape_write_segment(mtftseg->mt_segno,
- zft_deblock_buf,
- mtftseg->mt_mode);
- if (mtftseg->mt_result >= 0 && mtftseg->mt_mode == FT_WR_SINGLE) {
- /*
- * a negativ result is not an ioctl error. if
- * the user wants to write damaged tapes,
- * it's up to her/him
- */
- if ((result = ftape_loop_until_writes_done()) < 0) {
- mtftseg->mt_result = result;
- }
- }
- TRACE_EXIT 0;
-}
-#endif
-
-#ifdef MTIOCVOLINFO
-/*
- * get information about volume positioned at.
- */
-static int mtiocvolinfo(struct mtvolinfo *volinfo, int arg_size)
-{
- const zft_volinfo *volume;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Mag tape ioctl command: MTIOCVOLINFO");
- if (arg_size != sizeof(struct mtvolinfo)) {
- TRACE_ABORT(-EINVAL,
- ft_t_info, "bad argument size: %d", arg_size);
- }
- if (zft_offline) {
- TRACE_EXIT -ENXIO;
- }
- if (!ft_formatted) {
- TRACE_EXIT -EACCES;
- }
- TRACE_CATCH(zft_def_idle_state(),);
- volume = zft_find_volume(zft_pos.seg_pos);
- volinfo->mt_volno = volume->count;
- volinfo->mt_blksz = volume->blk_sz == 1 ? 0 : volume->blk_sz;
- volinfo->mt_size = volume->size >> 10;
- volinfo->mt_rawsize = ((zft_calc_tape_pos(volume->end_seg + 1) >> 10) -
- (zft_calc_tape_pos(volume->start_seg) >> 10));
- volinfo->mt_cmpr = volume->use_compression;
- TRACE_EXIT 0;
-}
-#endif
-
-#ifdef ZFT_OBSOLETE
-static int mtioc_zftape_getblksz(struct mtblksz *blksz, int arg_size)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "\n"
- KERN_INFO "Mag tape ioctl command: MTIOC_ZTAPE_GETBLKSZ\n"
- KERN_INFO "This ioctl is here merely for compatibility.\n"
- KERN_INFO "Please use MTIOCVOLINFO instead");
- if (arg_size != sizeof(struct mtblksz)) {
- TRACE_ABORT(-EINVAL,
- ft_t_info, "bad argument size: %d", arg_size);
- }
- if (zft_offline) {
- TRACE_EXIT -ENXIO;
- }
- if (!ft_formatted) {
- TRACE_EXIT -EACCES;
- }
- TRACE_CATCH(zft_def_idle_state(),);
- blksz->mt_blksz = zft_find_volume(zft_pos.seg_pos)->blk_sz;
- TRACE_EXIT 0;
-}
-#endif
-
-#ifdef MTIOCGETSIZE
-/*
- * get the capacity of the tape cartridge.
- */
-static int mtiocgetsize(struct mttapesize *size, int arg_size)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Mag tape ioctl command: MTIOC_ZFTAPE_GETSIZE");
- if (arg_size != sizeof(struct mttapesize)) {
- TRACE_ABORT(-EINVAL,
- ft_t_info, "bad argument size: %d", arg_size);
- }
- if (zft_offline) {
- TRACE_EXIT -ENXIO;
- }
- if (!ft_formatted) {
- TRACE_EXIT -EACCES;
- }
- TRACE_CATCH(zft_def_idle_state(),);
- size->mt_capacity = (unsigned int)(zft_capacity>>10);
- size->mt_used = (unsigned int)(zft_get_eom_pos()>>10);
- TRACE_EXIT 0;
-}
-#endif
-
-static int mtiocpos(struct mtpos *mtpos, int arg_size)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Mag tape ioctl command: MTIOCPOS");
- if (arg_size != sizeof(struct mtpos)) {
- TRACE_ABORT(-EINVAL,
- ft_t_info, "bad argument size: %d", arg_size);
- }
- result = mt_tell((int *)&mtpos->mt_blkno);
- TRACE_EXIT result;
-}
-
-#ifdef MTIOCFTFORMAT
-/*
- * formatting of floppy tape cartridges. This is intended to be used
- * together with the MTIOCFTCMD ioctl and the new mmap feature
- */
-
-/*
- * This function uses ftape_decode_header_segment() to inform the low
- * level ftape module about the new parameters.
- *
- * It erases the hseg_buf. The calling process must specify all
- * parameters to assure proper operation.
- *
- * return values: -EINVAL - wrong argument size
- * -EINVAL - if ftape_decode_header_segment() failed.
- */
-static int set_format_parms(struct ftfmtparms *p, __u8 *hseg_buf)
-{
- ft_trace_t old_level = TRACE_LEVEL;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "MTIOCFTFORMAT operation FTFMT_SETPARMS");
- memset(hseg_buf, 0, FT_SEGMENT_SIZE);
- PUT4(hseg_buf, FT_SIGNATURE, FT_HSEG_MAGIC);
-
- /* fill in user specified parameters
- */
- hseg_buf[FT_FMT_CODE] = (__u8)p->ft_fmtcode;
- PUT2(hseg_buf, FT_SPT, p->ft_spt);
- hseg_buf[FT_TPC] = (__u8)p->ft_tpc;
- hseg_buf[FT_FHM] = (__u8)p->ft_fhm;
- hseg_buf[FT_FTM] = (__u8)p->ft_ftm;
-
- /* fill in sane defaults to make ftape happy.
- */
- hseg_buf[FT_FSM] = (__u8)128; /* 128 is hard wired all over ftape */
- if (p->ft_fmtcode == fmt_big) {
- PUT4(hseg_buf, FT_6_HSEG_1, 0);
- PUT4(hseg_buf, FT_6_HSEG_2, 1);
- PUT4(hseg_buf, FT_6_FRST_SEG, 2);
- PUT4(hseg_buf, FT_6_LAST_SEG, p->ft_spt * p->ft_tpc - 1);
- } else {
- PUT2(hseg_buf, FT_HSEG_1, 0);
- PUT2(hseg_buf, FT_HSEG_2, 1);
- PUT2(hseg_buf, FT_FRST_SEG, 2);
- PUT2(hseg_buf, FT_LAST_SEG, p->ft_spt * p->ft_tpc - 1);
- }
-
- /* Synchronize with the low level module. This is particularly
- * needed for unformatted cartridges as the QIC std was previously
- * unknown BUT is needed to set data rate and to calculate timeouts.
- */
- TRACE_CATCH(ftape_calibrate_data_rate(p->ft_qicstd&QIC_TAPE_STD_MASK),
- _res = -EINVAL);
-
- /* The following will also recalcualte the timeouts for the tape
- * length and QIC std we want to format to.
- * abort with -EINVAL rather than -EIO
- */
- SET_TRACE_LEVEL(ft_t_warn);
- TRACE_CATCH(ftape_decode_header_segment(hseg_buf),
- SET_TRACE_LEVEL(old_level); _res = -EINVAL);
- SET_TRACE_LEVEL(old_level);
- TRACE_EXIT 0;
-}
-
-/*
- * Return the internal SOFTWARE status of the kernel driver. This does
- * NOT query the tape drive about its status.
- */
-static int get_format_parms(struct ftfmtparms *p, __u8 *hseg_buffer)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "MTIOCFTFORMAT operation FTFMT_GETPARMS");
- p->ft_qicstd = ft_qic_std;
- p->ft_fmtcode = ft_format_code;
- p->ft_fhm = hseg_buffer[FT_FHM];
- p->ft_ftm = hseg_buffer[FT_FTM];
- p->ft_spt = ft_segments_per_track;
- p->ft_tpc = ft_tracks_per_tape;
- TRACE_EXIT 0;
-}
-
-static int mtiocftformat(struct mtftformat *mtftformat, int arg_size)
-{
- int result;
- union fmt_arg *arg = &mtftformat->fmt_arg;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Mag tape ioctl command: MTIOCFTFORMAT");
- if (zft_offline) {
- if (ft_no_tape) {
- TRACE_ABORT(-ENXIO, ft_t_info, "no tape present");
- } else {
- TRACE_ABORT(-ENXIO, ft_t_info, "drive is offline");
- }
- }
- if (zft_qic_mode) {
- TRACE_ABORT(-EACCES, ft_t_info,
- "driver needs to be in raw mode for this ioctl");
- }
- if (zft_hseg_buf == NULL) {
- TRACE_CATCH(zft_vcalloc_once(&zft_hseg_buf, FT_SEGMENT_SIZE),);
- }
- zft_header_read = 0;
- switch(mtftformat->fmt_op) {
- case FTFMT_SET_PARMS:
- TRACE_CATCH(set_format_parms(&arg->fmt_parms, zft_hseg_buf),);
- TRACE_EXIT 0;
- case FTFMT_GET_PARMS:
- TRACE_CATCH(get_format_parms(&arg->fmt_parms, zft_hseg_buf),);
- TRACE_EXIT 0;
- case FTFMT_FORMAT_TRACK:
- if ((ft_formatted && zft_check_write_access(&zft_pos) < 0) ||
- (!ft_formatted && zft_write_protected)) {
- TRACE_ABORT(-EACCES, ft_t_info, "Write access denied");
- }
- TRACE_CATCH(ftape_format_track(arg->fmt_track.ft_track,
- arg->fmt_track.ft_gap3),);
- TRACE_EXIT 0;
- case FTFMT_STATUS:
- TRACE_CATCH(ftape_format_status(&arg->fmt_status.ft_segment),);
- TRACE_EXIT 0;
- case FTFMT_VERIFY:
- TRACE_CATCH(ftape_verify_segment(arg->fmt_verify.ft_segment,
- (SectorMap *)&arg->fmt_verify.ft_bsm),);
- TRACE_EXIT 0;
- default:
- TRACE_ABORT(-EINVAL, ft_t_err, "Invalid format operation");
- }
- TRACE_EXIT result;
-}
-#endif
-
-#ifdef MTIOCFTCMD
-/*
- * send a QIC-117 command to the drive, with optional timeouts,
- * parameter and result bits. This is intended to be used together
- * with the formatting ioctl.
- */
-static int mtiocftcmd(struct mtftcmd *ftcmd, int arg_size)
-{
- int i;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "Mag tape ioctl command: MTIOCFTCMD");
- if (!capable(CAP_SYS_ADMIN)) {
- TRACE_ABORT(-EPERM, ft_t_info,
- "need CAP_SYS_ADMIN capability to send raw qic-117 commands");
- }
- if (zft_qic_mode) {
- TRACE_ABORT(-EACCES, ft_t_info,
- "driver needs to be in raw mode for this ioctl");
- }
- if (arg_size != sizeof(struct mtftcmd)) {
- TRACE_ABORT(-EINVAL,
- ft_t_info, "bad argument size: %d", arg_size);
- }
- if (ftcmd->ft_wait_before) {
- TRACE_CATCH(ftape_ready_wait(ftcmd->ft_wait_before,
- &ftcmd->ft_status),);
- }
- if (ftcmd->ft_status & QIC_STATUS_ERROR)
- goto ftmtcmd_error;
- if (ftcmd->ft_result_bits != 0) {
- TRACE_CATCH(ftape_report_operation(&ftcmd->ft_result,
- ftcmd->ft_cmd,
- ftcmd->ft_result_bits),);
- } else {
- TRACE_CATCH(ftape_command(ftcmd->ft_cmd),);
- if (ftcmd->ft_status & QIC_STATUS_ERROR)
- goto ftmtcmd_error;
- for (i = 0; i < ftcmd->ft_parm_cnt; i++) {
- TRACE_CATCH(ftape_parameter(ftcmd->ft_parms[i]&0x0f),);
- if (ftcmd->ft_status & QIC_STATUS_ERROR)
- goto ftmtcmd_error;
- }
- }
- if (ftcmd->ft_wait_after != 0) {
- TRACE_CATCH(ftape_ready_wait(ftcmd->ft_wait_after,
- &ftcmd->ft_status),);
- }
-ftmtcmd_error:
- if (ftcmd->ft_status & QIC_STATUS_ERROR) {
- TRACE(ft_t_noise, "error status set");
- TRACE_CATCH(ftape_report_error(&ftcmd->ft_error,
- &ftcmd->ft_cmd, 1),);
- }
- TRACE_EXIT 0; /* this is not an i/o error */
-}
-#endif
-
-/* IOCTL routine called by kernel-interface code
- */
-int _zft_ioctl(unsigned int command, void __user * arg)
-{
- int result;
- union { struct mtop mtop;
- struct mtget mtget;
- struct mtpos mtpos;
-#ifdef MTIOCRDFTSEG
- struct mtftseg mtftseg;
-#endif
-#ifdef MTIOCVOLINFO
- struct mtvolinfo mtvolinfo;
-#endif
-#ifdef MTIOCGETSIZE
- struct mttapesize mttapesize;
-#endif
-#ifdef MTIOCFTFORMAT
- struct mtftformat mtftformat;
-#endif
-#ifdef ZFT_OBSOLETE
- struct mtblksz mtblksz;
-#endif
-#ifdef MTIOCFTCMD
- struct mtftcmd mtftcmd;
-#endif
- } krnl_arg;
- int arg_size = _IOC_SIZE(command);
- int dir = _IOC_DIR(command);
- TRACE_FUN(ft_t_flow);
-
- /* This check will only catch arguments that are too large !
- */
- if (dir & (_IOC_READ | _IOC_WRITE) && arg_size > sizeof(krnl_arg)) {
- TRACE_ABORT(-EINVAL,
- ft_t_info, "bad argument size: %d", arg_size);
- }
- if (dir & _IOC_WRITE) {
- if (copy_from_user(&krnl_arg, arg, arg_size) != 0) {
- TRACE_EXIT -EFAULT;
- }
- }
- TRACE(ft_t_flow, "called with ioctl command: 0x%08x", command);
- switch (command) {
- case MTIOCTOP:
- result = mtioctop(&krnl_arg.mtop, arg_size);
- break;
- case MTIOCGET:
- result = mtiocget(&krnl_arg.mtget, arg_size);
- break;
- case MTIOCPOS:
- result = mtiocpos(&krnl_arg.mtpos, arg_size);
- break;
-#ifdef MTIOCVOLINFO
- case MTIOCVOLINFO:
- result = mtiocvolinfo(&krnl_arg.mtvolinfo, arg_size);
- break;
-#endif
-#ifdef ZFT_OBSOLETE
- case MTIOC_ZFTAPE_GETBLKSZ:
- result = mtioc_zftape_getblksz(&krnl_arg.mtblksz, arg_size);
- break;
-#endif
-#ifdef MTIOCRDFTSEG
- case MTIOCRDFTSEG: /* read a segment via ioctl */
- result = mtiocrdftseg(&krnl_arg.mtftseg, arg_size);
- break;
-#endif
-#ifdef MTIOCWRFTSEG
- case MTIOCWRFTSEG: /* write a segment via ioctl */
- result = mtiocwrftseg(&krnl_arg.mtftseg, arg_size);
- break;
-#endif
-#ifdef MTIOCGETSIZE
- case MTIOCGETSIZE:
- result = mtiocgetsize(&krnl_arg.mttapesize, arg_size);
- break;
-#endif
-#ifdef MTIOCFTFORMAT
- case MTIOCFTFORMAT:
- result = mtiocftformat(&krnl_arg.mtftformat, arg_size);
- break;
-#endif
-#ifdef MTIOCFTCMD
- case MTIOCFTCMD:
- result = mtiocftcmd(&krnl_arg.mtftcmd, arg_size);
- break;
-#endif
- default:
- result = -EINVAL;
- break;
- }
- if ((result >= 0) && (dir & _IOC_READ)) {
- if (copy_to_user(arg, &krnl_arg, arg_size) != 0) {
- TRACE_EXIT -EFAULT;
- }
- }
- TRACE_EXIT result;
-}
diff --git a/drivers/char/ftape/zftape/zftape-ctl.h b/drivers/char/ftape/zftape/zftape-ctl.h
deleted file mode 100644
index 8e6f2d7ac74..00000000000
--- a/drivers/char/ftape/zftape/zftape-ctl.h
+++ /dev/null
@@ -1,58 +0,0 @@
-#ifndef _ZFTAPE_CTL_H
-#define _ZFTAPE_CTL_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/ftape/zftape/zftape-ctl.h,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:02 $
- *
- * This file contains the non-standard IOCTL related definitions
- * for the QIC-40/80 floppy-tape driver for Linux.
- */
-
-#include <linux/ioctl.h>
-#include <linux/mtio.h>
-
-#include "../zftape/zftape-rw.h"
-
-#ifdef CONFIG_ZFTAPE_MODULE
-#define ftape_status (*zft_status)
-#endif
-
-extern int zft_offline;
-extern int zft_mt_compression;
-extern int zft_write_protected;
-extern int zft_header_read;
-extern unsigned int zft_unit;
-extern int zft_resid;
-
-extern void zft_reset_position(zft_position *pos);
-extern int zft_check_write_access(zft_position *pos);
-extern int zft_def_idle_state(void);
-
-/* hooks for the VFS interface
- */
-extern int _zft_open(unsigned int dev_minor, unsigned int access_mode);
-extern int _zft_close(void);
-extern int _zft_ioctl(unsigned int command, void __user *arg);
-#endif
-
-
-
diff --git a/drivers/char/ftape/zftape/zftape-eof.c b/drivers/char/ftape/zftape/zftape-eof.c
deleted file mode 100644
index dcadcaee9ac..00000000000
--- a/drivers/char/ftape/zftape/zftape-eof.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * I use these routines just to decide when I have to fake a
- * volume-table to preserve compatibility to original ftape.
- */
-/*
- * Copyright (C) 1994-1995 Bas Laarhoven.
- *
- * Modified for zftape 1996, 1997 Claus 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/ftape/zftape/zftape-eof.c,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:02 $
- *
- * This file contains the eof mark handling code
- * for the QIC-40/80 floppy-tape driver for Linux.
- */
-
-#include <linux/string.h>
-#include <linux/errno.h>
-
-#include <linux/zftape.h>
-
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-rw.h"
-#include "../zftape/zftape-eof.h"
-
-/* Global vars.
- */
-
-/* a copy of the failed sector log from the header segment.
- */
-eof_mark_union *zft_eof_map;
-
-/* number of eof marks (entries in bad sector log) on tape.
- */
-int zft_nr_eof_marks = -1;
-
-
-/* Local vars.
- */
-
-static char linux_tape_label[] = "Linux raw format V";
-enum {
- min_fmt_version = 1, max_fmt_version = 2
-};
-static unsigned ftape_fmt_version = 0;
-
-
-/* Ftape (mis)uses the bad sector log to record end-of-file marks.
- * Initially (when the tape is erased) all entries in the bad sector
- * log are added to the tape's bad sector map. The bad sector log then
- * is cleared.
- *
- * The bad sector log normally contains entries of the form:
- * even 16-bit word: segment number of bad sector
- * odd 16-bit word: encoded date
- * There can be a total of 448 entries (1792 bytes).
- *
- * My guess is that no program is using this bad sector log (the *
- * format seems useless as there is no indication of the bad sector
- * itself, only the segment) However, if any program does use the bad
- * sector log, the format used by ftape will let the program think
- * there are some bad sectors and no harm is done.
- *
- * The eof mark entries that ftape stores in the bad sector log: even
- * 16-bit word: segment number of eof mark odd 16-bit word: sector
- * number of eof mark [1..32]
- *
- * The zft_eof_map as maintained is a sorted list of eof mark entries.
- *
- *
- * The tape name field in the header segments is used to store a linux
- * tape identification string and a version number. This way the tape
- * can be recognized as a Linux raw format tape when using tools under
- * other OS's.
- *
- * 'Wide' QIC tapes (format code 4) don't have a failed sector list
- * anymore. That space is used for the (longer) bad sector map that
- * now is a variable length list too. We now store our end-of-file
- * marker list after the bad-sector-map on tape. The list is delimited
- * by a (__u32) 0 entry.
- */
-
-int zft_ftape_validate_label(char *label)
-{
- static char tmp_label[45];
- int result = 0;
- TRACE_FUN(ft_t_any);
-
- memcpy(tmp_label, label, FT_LABEL_SZ);
- tmp_label[FT_LABEL_SZ] = '\0';
- TRACE(ft_t_noise, "tape label = `%s'", tmp_label);
- ftape_fmt_version = 0;
- if (memcmp(label, linux_tape_label, strlen(linux_tape_label)) == 0) {
- int pos = strlen(linux_tape_label);
- while (label[pos] >= '0' && label[pos] <= '9') {
- ftape_fmt_version *= 10;
- ftape_fmt_version = label[ pos++] - '0';
- }
- result = (ftape_fmt_version >= min_fmt_version &&
- ftape_fmt_version <= max_fmt_version);
- }
- TRACE(ft_t_noise, "format version = %d", ftape_fmt_version);
- TRACE_EXIT result;
-}
-
-static __u8 * find_end_of_eof_list(__u8 * ptr, __u8 * limit)
-{
- while (ptr + 3 < limit) {
-
- if (get_unaligned((__u32*)ptr)) {
- ptr += sizeof(__u32);
- } else {
- return ptr;
- }
- }
- return NULL;
-}
-
-void zft_ftape_extract_file_marks(__u8* address)
-{
- int i;
- TRACE_FUN(ft_t_any);
-
- zft_eof_map = NULL;
- if (ft_format_code == fmt_var || ft_format_code == fmt_big) {
- __u8* end;
- __u8* start = ftape_find_end_of_bsm_list(address);
-
- zft_nr_eof_marks = 0;
- if (start) {
- start += 3; /* skip end of list mark */
- end = find_end_of_eof_list(start,
- address + FT_SEGMENT_SIZE);
- if (end && end - start <= FT_FSL_SIZE) {
- zft_nr_eof_marks = ((end - start) /
- sizeof(eof_mark_union));
- zft_eof_map = (eof_mark_union *)start;
- } else {
- TRACE(ft_t_err,
- "EOF Mark List is too long or damaged!");
- }
- } else {
- TRACE(ft_t_err,
- "Bad Sector List is too long or damaged !");
- }
- } else {
- zft_eof_map = (eof_mark_union *)&address[FT_FSL];
- zft_nr_eof_marks = GET2(address, FT_FSL_CNT);
- }
- TRACE(ft_t_noise, "number of file marks: %d", zft_nr_eof_marks);
- if (ftape_fmt_version == 1) {
- TRACE(ft_t_info, "swapping version 1 fields");
- /* version 1 format uses swapped sector and segment
- * fields, correct that !
- */
- for (i = 0; i < zft_nr_eof_marks; ++i) {
- __u16 tmp = GET2(&zft_eof_map[i].mark.segment,0);
- PUT2(&zft_eof_map[i].mark.segment, 0,
- GET2(&zft_eof_map[i].mark.date,0));
- PUT2(&zft_eof_map[i].mark.date, 0, tmp);
- }
- }
- for (i = 0; i < zft_nr_eof_marks; ++i) {
- TRACE(ft_t_noise, "eof mark: %5d/%2d",
- GET2(&zft_eof_map[i].mark.segment, 0),
- GET2(&zft_eof_map[i].mark.date,0));
- }
- TRACE_EXIT;
-}
-
-void zft_clear_ftape_file_marks(void)
-{
- TRACE_FUN(ft_t_flow);
- /* Clear failed sector log: remove all tape marks. We
- * don't use old ftape-style EOF-marks.
- */
- TRACE(ft_t_info, "Clearing old ftape's eof map");
- memset(zft_eof_map, 0, zft_nr_eof_marks * sizeof(__u32));
- zft_nr_eof_marks = 0;
- PUT2(zft_hseg_buf, FT_FSL_CNT, 0); /* nr of eof-marks */
- zft_header_changed = 1;
- zft_update_label(zft_hseg_buf);
- TRACE_EXIT;
-}
diff --git a/drivers/char/ftape/zftape/zftape-eof.h b/drivers/char/ftape/zftape/zftape-eof.h
deleted file mode 100644
index 26568c26c51..00000000000
--- a/drivers/char/ftape/zftape/zftape-eof.h
+++ /dev/null
@@ -1,52 +0,0 @@
-#ifndef _ZFTAPE_EOF_H
-#define _ZFTAPE_EOF_H
-
-/*
- * Copyright (C) 1994-1995 Bas Laarhoven.
- * adaptaed for zftape 1996, 1997 by Claus 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/ftape/zftape/zftape-eof.h,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:03 $
- *
- * Definitions and declarations for the end of file markers
- * for the QIC-40/80 floppy-tape driver for Linux.
- */
-
-#include <linux/ftape-header-segment.h>
-#include "../zftape/zftape-buffers.h"
-/* failed sector log size (only used if format code != 4).
- */
-
-typedef union {
- ft_fsl_entry mark;
- __u32 entry;
-} eof_mark_union;
-
-/* ftape-eof.c defined global vars.
- */
-extern int zft_nr_eof_marks;
-extern eof_mark_union *zft_eof_map;
-
-/* ftape-eof.c defined global functions.
- */
-extern void zft_ftape_extract_file_marks(__u8* address);
-extern int zft_ftape_validate_label(char* label);
-extern void zft_clear_ftape_file_marks(void);
-
-#endif
diff --git a/drivers/char/ftape/zftape/zftape-init.c b/drivers/char/ftape/zftape/zftape-init.c
deleted file mode 100644
index 164a1aa77a2..00000000000
--- a/drivers/char/ftape/zftape/zftape-init.c
+++ /dev/null
@@ -1,377 +0,0 @@
-/*
- * 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.
-
- *
- * This file contains the code that registers the zftape frontend
- * to the ftape floppy tape driver for Linux
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/major.h>
-#include <linux/slab.h>
-#ifdef CONFIG_KMOD
-#include <linux/kmod.h>
-#endif
-#include <linux/fcntl.h>
-#include <linux/smp_lock.h>
-
-#include <linux/zftape.h>
-#include <linux/init.h>
-#include <linux/device.h>
-
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-write.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-buffers.h"
-
-MODULE_AUTHOR("(c) 1996, 1997 Claus-Justus Heine "
- "(claus@momo.math.rwth-aachen.de)");
-MODULE_DESCRIPTION(ZFTAPE_VERSION " - "
- "VFS interface for the Linux floppy tape driver. "
- "Support for QIC-113 compatible volume table "
- "and builtin compression (lzrw3 algorithm)");
-MODULE_SUPPORTED_DEVICE("char-major-27");
-MODULE_LICENSE("GPL");
-
-/* Global vars.
- */
-struct zft_cmpr_ops *zft_cmpr_ops = NULL;
-const ftape_info *zft_status;
-
-/* Local vars.
- */
-static unsigned long busy_flag;
-
-static sigset_t orig_sigmask;
-
-/* the interface to the kernel vfs layer
- */
-
-/* Note about llseek():
- *
- * st.c and tpqic.c update fp->f_pos but don't implment llseek() and
- * initialize the llseek component of the file_ops struct with NULL.
- * This means that the user will get the default seek, but the tape
- * device will not respect the new position, but happily read from the
- * old position. Think a zftape specific llseek() function would be
- * better, returning -ESPIPE. TODO.
- */
-
-static int zft_open (struct inode *ino, struct file *filep);
-static int zft_close(struct inode *ino, struct file *filep);
-static int zft_ioctl(struct inode *ino, struct file *filep,
- unsigned int command, unsigned long arg);
-static int zft_mmap(struct file *filep, struct vm_area_struct *vma);
-static ssize_t zft_read (struct file *fp, char __user *buff,
- size_t req_len, loff_t *ppos);
-static ssize_t zft_write(struct file *fp, const char __user *buff,
- size_t req_len, loff_t *ppos);
-
-static const struct file_operations zft_cdev =
-{
- .owner = THIS_MODULE,
- .read = zft_read,
- .write = zft_write,
- .ioctl = zft_ioctl,
- .mmap = zft_mmap,
- .open = zft_open,
- .release = zft_close,
-};
-
-static struct class *zft_class;
-
-/* Open floppy tape device
- */
-static int zft_open(struct inode *ino, struct file *filep)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- nonseekable_open(ino, filep);
- TRACE(ft_t_flow, "called for minor %d", iminor(ino));
- if ( test_and_set_bit(0,&busy_flag) ) {
- TRACE_ABORT(-EBUSY, ft_t_warn, "failed: already busy");
- }
- if ((iminor(ino) & ~(ZFT_MINOR_OP_MASK | FTAPE_NO_REWIND))
- >
- FTAPE_SEL_D) {
- clear_bit(0,&busy_flag);
- TRACE_ABORT(-ENXIO, ft_t_err, "failed: invalid unit nr");
- }
- orig_sigmask = current->blocked;
- sigfillset(&current->blocked);
- result = _zft_open(iminor(ino), filep->f_flags & O_ACCMODE);
- if (result < 0) {
- current->blocked = orig_sigmask; /* restore mask */
- clear_bit(0,&busy_flag);
- TRACE_ABORT(result, ft_t_err, "_ftape_open failed");
- } else {
- /* Mask signals that will disturb proper operation of the
- * program that is calling.
- */
- current->blocked = orig_sigmask;
- sigaddsetmask (&current->blocked, _DO_BLOCK);
- TRACE_EXIT 0;
- }
-}
-
-/* Close floppy tape device
- */
-static int zft_close(struct inode *ino, struct file *filep)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- if ( !test_bit(0,&busy_flag) || iminor(ino) != zft_unit) {
- TRACE(ft_t_err, "failed: not busy or wrong unit");
- TRACE_EXIT 0;
- }
- sigfillset(&current->blocked);
- result = _zft_close();
- if (result < 0) {
- TRACE(ft_t_err, "_zft_close failed");
- }
- current->blocked = orig_sigmask; /* restore before open state */
- clear_bit(0,&busy_flag);
- TRACE_EXIT 0;
-}
-
-/* Ioctl for floppy tape device
- */
-static int zft_ioctl(struct inode *ino, struct file *filep,
- unsigned int command, unsigned long arg)
-{
- int result = -EIO;
- sigset_t old_sigmask;
- TRACE_FUN(ft_t_flow);
-
- if ( !test_bit(0,&busy_flag) || iminor(ino) != zft_unit || ft_failure) {
- TRACE_ABORT(-EIO, ft_t_err,
- "failed: not busy, failure or wrong unit");
- }
- old_sigmask = current->blocked; /* save mask */
- sigfillset(&current->blocked);
- /* This will work as long as sizeof(void *) == sizeof(long) */
- result = _zft_ioctl(command, (void __user *) arg);
- current->blocked = old_sigmask; /* restore mask */
- TRACE_EXIT result;
-}
-
-/* Ioctl for floppy tape device
- */
-static int zft_mmap(struct file *filep, struct vm_area_struct *vma)
-{
- int result = -EIO;
- sigset_t old_sigmask;
- TRACE_FUN(ft_t_flow);
-
- if ( !test_bit(0,&busy_flag) ||
- iminor(filep->f_dentry->d_inode) != zft_unit ||
- ft_failure)
- {
- TRACE_ABORT(-EIO, ft_t_err,
- "failed: not busy, failure or wrong unit");
- }
- old_sigmask = current->blocked; /* save mask */
- sigfillset(&current->blocked);
- if ((result = ftape_mmap(vma)) >= 0) {
-#ifndef MSYNC_BUG_WAS_FIXED
- static struct vm_operations_struct dummy = { NULL, };
- vma->vm_ops = &dummy;
-#endif
- }
- current->blocked = old_sigmask; /* restore mask */
- TRACE_EXIT result;
-}
-
-/* Read from floppy tape device
- */
-static ssize_t zft_read(struct file *fp, char __user *buff,
- size_t req_len, loff_t *ppos)
-{
- int result = -EIO;
- sigset_t old_sigmask;
- struct inode *ino = fp->f_dentry->d_inode;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_data_flow, "called with count: %ld", (unsigned long)req_len);
- if (!test_bit(0,&busy_flag) || iminor(ino) != zft_unit || ft_failure) {
- TRACE_ABORT(-EIO, ft_t_err,
- "failed: not busy, failure or wrong unit");
- }
- old_sigmask = current->blocked; /* save mask */
- sigfillset(&current->blocked);
- result = _zft_read(buff, req_len);
- current->blocked = old_sigmask; /* restore mask */
- TRACE(ft_t_data_flow, "return with count: %d", result);
- TRACE_EXIT result;
-}
-
-/* Write to tape device
- */
-static ssize_t zft_write(struct file *fp, const char __user *buff,
- size_t req_len, loff_t *ppos)
-{
- int result = -EIO;
- sigset_t old_sigmask;
- struct inode *ino = fp->f_dentry->d_inode;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_flow, "called with count: %ld", (unsigned long)req_len);
- if (!test_bit(0,&busy_flag) || iminor(ino) != zft_unit || ft_failure) {
- TRACE_ABORT(-EIO, ft_t_err,
- "failed: not busy, failure or wrong unit");
- }
- old_sigmask = current->blocked; /* save mask */
- sigfillset(&current->blocked);
- result = _zft_write(buff, req_len);
- current->blocked = old_sigmask; /* restore mask */
- TRACE(ft_t_data_flow, "return with count: %d", result);
- TRACE_EXIT result;
-}
-
-/* END OF VFS INTERFACE
- *
- *****************************************************************************/
-
-/* driver/module initialization
- */
-
-/* the compression module has to call this function to hook into the zftape
- * code
- */
-int zft_cmpr_register(struct zft_cmpr_ops *new_ops)
-{
- TRACE_FUN(ft_t_flow);
-
- if (zft_cmpr_ops != NULL) {
- TRACE_EXIT -EBUSY;
- } else {
- zft_cmpr_ops = new_ops;
- TRACE_EXIT 0;
- }
-}
-
-/* lock the zft-compressor() module.
- */
-int zft_cmpr_lock(int try_to_load)
-{
- if (zft_cmpr_ops == NULL) {
-#ifdef CONFIG_KMOD
- if (try_to_load) {
- request_module("zft-compressor");
- if (zft_cmpr_ops == NULL) {
- return -ENOSYS;
- }
- } else {
- return -ENOSYS;
- }
-#else
- return -ENOSYS;
-#endif
- }
- (*zft_cmpr_ops->lock)();
- return 0;
-}
-
-#ifdef CONFIG_ZFT_COMPRESSOR
-extern int zft_compressor_init(void);
-#endif
-
-/* Called by modules package when installing the driver or by kernel
- * during the initialization phase
- */
-int __init zft_init(void)
-{
- int i;
- TRACE_FUN(ft_t_flow);
-
-#ifdef MODULE
- printk(KERN_INFO ZFTAPE_VERSION "\n");
- if (TRACE_LEVEL >= ft_t_info) {
- printk(
-KERN_INFO
-"(c) 1996, 1997 Claus-Justus Heine (claus@momo.math.rwth-aachen.de)\n"
-KERN_INFO
-"vfs interface for ftape floppy tape driver.\n"
-KERN_INFO
-"Support for QIC-113 compatible volume table, dynamic memory allocation\n"
-KERN_INFO
-"and builtin compression (lzrw3 algorithm).\n");
- }
-#else /* !MODULE */
- /* print a short no-nonsense boot message */
- printk(KERN_INFO ZFTAPE_VERSION "\n");
-#endif /* MODULE */
- TRACE(ft_t_info, "zft_init @ 0x%p", zft_init);
- TRACE(ft_t_info,
- "installing zftape VFS interface for ftape driver ...");
- TRACE_CATCH(register_chrdev(QIC117_TAPE_MAJOR, "zft", &zft_cdev),);
-
- zft_class = class_create(THIS_MODULE, "zft");
- for (i = 0; i < 4; i++) {
- class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i), NULL, "qft%i", i);
- class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 4), NULL, "nqft%i", i);
- class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 16), NULL, "zqft%i", i);
- class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 20), NULL, "nzqft%i", i);
- class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 32), NULL, "rawqft%i", i);
- class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 36), NULL, "nrawrawqft%i", i);
- }
-
-#ifdef CONFIG_ZFT_COMPRESSOR
- (void)zft_compressor_init();
-#endif
- zft_status = ftape_get_status(); /* fetch global data of ftape
- * hardware driver
- */
- TRACE_EXIT 0;
-}
-
-
-/* Called by modules package when removing the driver
- */
-static void zft_exit(void)
-{
- int i;
- TRACE_FUN(ft_t_flow);
-
- if (unregister_chrdev(QIC117_TAPE_MAJOR, "zft") != 0) {
- TRACE(ft_t_warn, "failed");
- } else {
- TRACE(ft_t_info, "successful");
- }
- for (i = 0; i < 4; i++) {
- class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i));
- class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 4));
- class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 16));
- class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 20));
- class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 32));
- class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 36));
- }
- class_destroy(zft_class);
- zft_uninit_mem(); /* release remaining memory, if any */
- printk(KERN_INFO "zftape successfully unloaded.\n");
- TRACE_EXIT;
-}
-
-module_init(zft_init);
-module_exit(zft_exit);
diff --git a/drivers/char/ftape/zftape/zftape-init.h b/drivers/char/ftape/zftape/zftape-init.h
deleted file mode 100644
index 937e5d48c20..00000000000
--- a/drivers/char/ftape/zftape/zftape-init.h
+++ /dev/null
@@ -1,77 +0,0 @@
-#ifndef _ZFTAPE_INIT_H
-#define _ZFTAPE_INIT_H
-
-/*
- * Copyright (C) 1996, 1997 Claus 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/ftape/zftape/zftape-init.h,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:05 $
- *
- * This file contains definitions and macro for the vfs
- * interface defined by zftape
- *
- */
-
-#include <linux/ftape-header-segment.h>
-
-#include "../lowlevel/ftape-tracing.h"
-#include "../lowlevel/ftape-ctl.h"
-#include "../lowlevel/ftape-read.h"
-#include "../lowlevel/ftape-write.h"
-#include "../lowlevel/ftape-bsm.h"
-#include "../lowlevel/ftape-io.h"
-#include "../lowlevel/ftape-buffer.h"
-#include "../lowlevel/ftape-format.h"
-
-#include "../zftape/zftape-rw.h"
-
-#ifdef MODULE
-#define ftape_status (*zft_status)
-#endif
-
-extern const ftape_info *zft_status; /* needed for zftape-vtbl.h */
-
-#include "../zftape/zftape-vtbl.h"
-
-struct zft_cmpr_ops {
- int (*write)(int *write_cnt,
- __u8 *dst_buf, const int seg_sz,
- const __u8 __user *src_buf, const int req_len,
- const zft_position *pos, const zft_volinfo *volume);
- int (*read)(int *read_cnt,
- __u8 __user *dst_buf, const int req_len,
- const __u8 *src_buf, const int seg_sz,
- const zft_position *pos, const zft_volinfo *volume);
- int (*seek)(unsigned int new_block_pos,
- zft_position *pos, const zft_volinfo *volume,
- __u8 *buffer);
- void (*lock) (void);
- void (*reset) (void);
- void (*cleanup)(void);
-};
-
-extern struct zft_cmpr_ops *zft_cmpr_ops;
-/* zftape-init.c defined global functions.
- */
-extern int zft_cmpr_register(struct zft_cmpr_ops *new_ops);
-extern int zft_cmpr_lock(int try_to_load);
-
-#endif
-
-
diff --git a/drivers/char/ftape/zftape/zftape-read.c b/drivers/char/ftape/zftape/zftape-read.c
deleted file mode 100644
index 214bf03dce6..00000000000
--- a/drivers/char/ftape/zftape/zftape-read.c
+++ /dev/null
@@ -1,377 +0,0 @@
-/*
- * 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/ftape/zftape/zftape-read.c,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:06 $
- *
- * This file contains the high level reading code
- * for the QIC-117 floppy-tape driver for Linux.
- */
-
-#include <linux/errno.h>
-#include <linux/mm.h>
-
-#include <linux/zftape.h>
-
-#include <asm/uaccess.h>
-
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-eof.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-write.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-rw.h"
-#include "../zftape/zftape-vtbl.h"
-
-/* Global vars.
- */
-int zft_just_before_eof;
-
-/* Local vars.
- */
-static int buf_len_rd;
-
-void zft_zap_read_buffers(void)
-{
- buf_len_rd = 0;
-}
-
-int zft_read_header_segments(void)
-{
- TRACE_FUN(ft_t_flow);
-
- zft_header_read = 0;
- TRACE_CATCH(zft_vmalloc_once(&zft_hseg_buf, FT_SEGMENT_SIZE),);
- TRACE_CATCH(ftape_read_header_segment(zft_hseg_buf),);
- TRACE(ft_t_info, "Segments written since first format: %d",
- (int)GET4(zft_hseg_buf, FT_SEG_CNT));
- zft_qic113 = (ft_format_code != fmt_normal &&
- ft_format_code != fmt_1100ft &&
- ft_format_code != fmt_425ft);
- TRACE(ft_t_info, "ft_first_data_segment: %d, ft_last_data_segment: %d",
- ft_first_data_segment, ft_last_data_segment);
- zft_capacity = zft_get_capacity();
- zft_old_ftape = zft_ftape_validate_label(&zft_hseg_buf[FT_LABEL]);
- if (zft_old_ftape) {
- TRACE(ft_t_info,
-"Found old ftaped tape, emulating eof marks, entering read-only mode");
- zft_ftape_extract_file_marks(zft_hseg_buf);
- TRACE_CATCH(zft_fake_volume_headers(zft_eof_map,
- zft_nr_eof_marks),);
- } else {
- /* the specs say that the volume table must be
- * initialized with zeroes during formatting, so it
- * MUST be readable, i.e. contain vaid ECC
- * information.
- */
- TRACE_CATCH(ftape_read_segment(ft_first_data_segment,
- zft_deblock_buf,
- FT_RD_SINGLE),);
- TRACE_CATCH(zft_extract_volume_headers(zft_deblock_buf),);
- }
- zft_header_read = 1;
- zft_set_flags(zft_unit);
- zft_reset_position(&zft_pos);
- TRACE_EXIT 0;
-}
-
-int zft_fetch_segment_fraction(const unsigned int segment, void *buffer,
- const ft_read_mode_t read_mode,
- const unsigned int start,
- const unsigned int size)
-{
- int seg_sz;
- TRACE_FUN(ft_t_flow);
-
- if (segment == zft_deblock_segment) {
- TRACE(ft_t_data_flow,
- "re-using segment %d already in deblock buffer",
- segment);
- seg_sz = zft_get_seg_sz(segment);
- if (start > seg_sz) {
- TRACE_ABORT(-EINVAL, ft_t_bug,
- "trying to read beyond end of segment:\n"
- KERN_INFO "seg_sz : %d\n"
- KERN_INFO "start : %d\n"
- KERN_INFO "segment: %d",
- seg_sz, start, segment);
- }
- if ((start + size) > seg_sz) {
- TRACE_EXIT seg_sz - start;
- }
- TRACE_EXIT size;
- }
- seg_sz = ftape_read_segment_fraction(segment, buffer, read_mode,
- start, size);
- TRACE(ft_t_data_flow, "segment %d, result %d", segment, seg_sz);
- if ((int)seg_sz >= 0 && start == 0 && size == FT_SEGMENT_SIZE) {
- /* this implicitly assumes that we are always called with
- * buffer == zft_deblock_buf
- */
- zft_deblock_segment = segment;
- } else {
- zft_deblock_segment = -1;
- }
- TRACE_EXIT seg_sz;
-}
-
-/*
- * out:
- *
- * int *read_cnt: the number of bytes we removed from the
- * zft_deblock_buf (result)
- *
- * int *to_do : the remaining size of the read-request. Is changed.
- *
- * in:
- *
- * char *buff : buff is the address of the upper part of the user
- * buffer, that hasn't been filled with data yet.
- * int buf_pos_read: copy of buf_pos_rd
- * int buf_len_read: copy of buf_len_rd
- * char *zft_deblock_buf: ftape_zft_deblock_buf
- *
- * returns the amount of data actually copied to the user-buffer
- *
- * to_do MUST NOT SHRINK except to indicate an EOT. In this case to_do
- * has to be set to 0. We cannot return -ENOSPC, because we return the
- * amount of data actually * copied to the user-buffer
- */
-static int zft_simple_read (int *read_cnt,
- __u8 __user *dst_buf,
- const int to_do,
- const __u8 *src_buf,
- const int seg_sz,
- const zft_position *pos,
- const zft_volinfo *volume)
-{
- TRACE_FUN(ft_t_flow);
-
- if (seg_sz - pos->seg_byte_pos < to_do) {
- *read_cnt = seg_sz - pos->seg_byte_pos;
- } else {
- *read_cnt = to_do;
- }
- if (copy_to_user(dst_buf,
- src_buf + pos->seg_byte_pos, *read_cnt) != 0) {
- TRACE_EXIT -EFAULT;
- }
- TRACE(ft_t_noise, "nr bytes just read: %d", *read_cnt);
- TRACE_EXIT *read_cnt;
-}
-
-/* req_len: gets clipped due to EOT of EOF.
- * req_clipped: is a flag indicating whether req_len was clipped or not
- * volume: contains information on current volume (blk_sz etc.)
- */
-static int check_read_access(int *req_len,
- const zft_volinfo **volume,
- int *req_clipped,
- const zft_position *pos)
-{
- static __s64 remaining;
- static int eod;
- TRACE_FUN(ft_t_flow);
-
- if (zft_io_state != zft_reading) {
- if (zft_offline) { /* offline includes no_tape */
- TRACE_ABORT(-ENXIO, ft_t_warn,
- "tape is offline or no cartridge");
- }
- if (!ft_formatted) {
- TRACE_ABORT(-EACCES,
- ft_t_warn, "tape is not formatted");
- }
- /* now enter defined state, read header segment if not
- * already done and flush write buffers
- */
- TRACE_CATCH(zft_def_idle_state(),);
- zft_io_state = zft_reading;
- if (zft_tape_at_eod(pos)) {
- eod = 1;
- TRACE_EXIT 1;
- }
- eod = 0;
- *volume = zft_find_volume(pos->seg_pos);
- /* get the space left until EOF */
- remaining = zft_check_for_eof(*volume, pos);
- buf_len_rd = 0;
- TRACE(ft_t_noise, "remaining: " LL_X ", vol_no: %d",
- LL(remaining), (*volume)->count);
- } else if (zft_tape_at_eod(pos)) {
- if (++eod > 2) {
- TRACE_EXIT -EIO; /* st.c also returns -EIO */
- } else {
- TRACE_EXIT 1;
- }
- }
- if ((*req_len % (*volume)->blk_sz) != 0) {
- /* this message is informational only. The user gets the
- * proper return value
- */
- TRACE_ABORT(-EINVAL, ft_t_info,
- "req_len %d not a multiple of block size %d",
- *req_len, (*volume)->blk_sz);
- }
- /* As GNU tar doesn't accept partial read counts when the
- * multiple volume flag is set, we make sure to return the
- * requested amount of data. Except, of course, at the end of
- * the tape or file mark.
- */
- remaining -= *req_len;
- if (remaining <= 0) {
- TRACE(ft_t_noise,
- "clipped request from %d to %d.",
- *req_len, (int)(*req_len + remaining));
- *req_len += remaining;
- *req_clipped = 1;
- } else {
- *req_clipped = 0;
- }
- TRACE_EXIT 0;
-}
-
-/* this_segs_size: the current segment's size.
- * buff: the USER-SPACE buffer provided by the calling function.
- * req_len: how much data should be read at most.
- * volume: contains information on current volume (blk_sz etc.)
- */
-static int empty_deblock_buf(__u8 __user *usr_buf, const int req_len,
- const __u8 *src_buf, const int seg_sz,
- zft_position *pos,
- const zft_volinfo *volume)
-{
- int cnt;
- int result = 0;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_data_flow, "this_segs_size: %d", seg_sz);
- if (zft_use_compression && volume->use_compression) {
- TRACE_CATCH(zft_cmpr_lock(1 /* try to load */),);
- TRACE_CATCH(result= (*zft_cmpr_ops->read)(&cnt,
- usr_buf, req_len,
- src_buf, seg_sz,
- pos, volume),);
- } else {
- TRACE_CATCH(result= zft_simple_read (&cnt,
- usr_buf, req_len,
- src_buf, seg_sz,
- pos, volume),);
- }
- pos->volume_pos += result;
- pos->tape_pos += cnt;
- pos->seg_byte_pos += cnt;
- buf_len_rd -= cnt; /* remaining bytes in buffer */
- TRACE(ft_t_data_flow, "buf_len_rd: %d, cnt: %d", buf_len_rd, cnt);
- if(pos->seg_byte_pos >= seg_sz) {
- pos->seg_pos++;
- pos->seg_byte_pos = 0;
- }
- TRACE(ft_t_data_flow, "bytes moved out of deblock-buffer: %d", cnt);
- TRACE_EXIT result;
-}
-
-
-/* note: we store the segment id of the segment that is inside the
- * deblock buffer. This spares a lot of ftape_read_segment()s when we
- * use small block-sizes. The block-size may be 1kb (SECTOR_SIZE). In
- * this case a MTFSR 28 maybe still inside the same segment.
- */
-int _zft_read(char __user *buff, int req_len)
-{
- int req_clipped;
- int result = 0;
- int bytes_read = 0;
- static unsigned int seg_sz = 0;
- static const zft_volinfo *volume = NULL;
- TRACE_FUN(ft_t_flow);
-
- zft_resid = req_len;
- result = check_read_access(&req_len, &volume,
- &req_clipped, &zft_pos);
- switch(result) {
- case 0:
- break; /* nothing special */
- case 1:
- TRACE(ft_t_noise, "EOD reached");
- TRACE_EXIT 0; /* EOD */
- default:
- TRACE_ABORT(result, ft_t_noise,
- "check_read_access() failed with result %d",
- result);
- TRACE_EXIT result;
- }
- while (req_len > 0) {
- /* Allow escape from this loop on signal !
- */
- FT_SIGNAL_EXIT(_DONT_BLOCK);
- /* buf_len_rd == 0 means that we need to read a new
- * segment.
- */
- if (buf_len_rd == 0) {
- while((result = zft_fetch_segment(zft_pos.seg_pos,
- zft_deblock_buf,
- FT_RD_AHEAD)) == 0) {
- zft_pos.seg_pos ++;
- zft_pos.seg_byte_pos = 0;
- }
- if (result < 0) {
- zft_resid -= bytes_read;
- TRACE_ABORT(result, ft_t_noise,
- "zft_fetch_segment(): %d",
- result);
- }
- seg_sz = result;
- buf_len_rd = seg_sz - zft_pos.seg_byte_pos;
- }
- TRACE_CATCH(result = empty_deblock_buf(buff,
- req_len,
- zft_deblock_buf,
- seg_sz,
- &zft_pos,
- volume),
- zft_resid -= bytes_read);
- TRACE(ft_t_data_flow, "bytes just read: %d", result);
- bytes_read += result; /* what we got so far */
- buff += result; /* index in user-buffer */
- req_len -= result; /* what's left from req_len */
- } /* while (req_len > 0) */
- if (req_clipped) {
- TRACE(ft_t_data_flow,
- "maybe partial count because of eof mark");
- if (zft_just_before_eof && bytes_read == 0) {
- /* req_len was > 0, but user didn't get
- * anything the user has read in the eof-mark
- */
- zft_move_past_eof(&zft_pos);
- ftape_abort_operation();
- } else {
- /* don't skip to the next file before the user
- * tried to read a second time past EOF Just
- * mark that we are at EOF and maybe decrement
- * zft_seg_pos to stay in the same volume;
- */
- zft_just_before_eof = 1;
- zft_position_before_eof(&zft_pos, volume);
- TRACE(ft_t_noise, "just before eof");
- }
- }
- zft_resid -= result; /* for MTSTATUS */
- TRACE_EXIT bytes_read;
-}
diff --git a/drivers/char/ftape/zftape/zftape-read.h b/drivers/char/ftape/zftape/zftape-read.h
deleted file mode 100644
index 42941de0c23..00000000000
--- a/drivers/char/ftape/zftape/zftape-read.h
+++ /dev/null
@@ -1,53 +0,0 @@
-#ifndef _ZFTAPE_READ_H
-#define _ZFTAPE_READ_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/ftape/zftape/zftape-read.h,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:07 $
- *
- * This file contains the definitions for the read functions
- * for the zftape driver for Linux.
- *
- */
-
-#include "../lowlevel/ftape-read.h"
-
-/* ftape-read.c defined global vars.
- */
-extern int zft_just_before_eof;
-
-/* ftape-read.c defined global functions.
- */
-extern void zft_zap_read_buffers(void);
-extern int zft_read_header_segments(void);
-extern int zft_fetch_segment_fraction(const unsigned int segment,
- void *buffer,
- const ft_read_mode_t read_mode,
- const unsigned int start,
- const unsigned int size);
-#define zft_fetch_segment(segment, address, read_mode) \
- zft_fetch_segment_fraction(segment, address, read_mode, \
- 0, FT_SEGMENT_SIZE)
-/* hook for the VFS interface
- */
-extern int _zft_read(char __user *buff, int req_len);
-
-#endif /* _ZFTAPE_READ_H */
diff --git a/drivers/char/ftape/zftape/zftape-rw.c b/drivers/char/ftape/zftape/zftape-rw.c
deleted file mode 100644
index a61ef50f3df..00000000000
--- a/drivers/char/ftape/zftape/zftape-rw.c
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
- * 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/ftape/zftape/zftape-rw.c,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:08 $
- *
- * This file contains some common code for the r/w code for
- * zftape.
- */
-
-#include <linux/config.h> /* for CONFIG_ZFT_DFLT_BLK_SZ */
-#include <linux/errno.h>
-#include <linux/mm.h>
-
-#include <linux/zftape.h>
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-eof.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-write.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-rw.h"
-#include "../zftape/zftape-vtbl.h"
-
-/* Global vars.
- */
-
-__u8 *zft_deblock_buf;
-__u8 *zft_hseg_buf;
-int zft_deblock_segment = -1;
-zft_status_enum zft_io_state = zft_idle;
-int zft_header_changed;
-int zft_qic113; /* conform to old specs. and old zftape */
-int zft_use_compression;
-zft_position zft_pos = {
- -1, /* seg_pos */
- 0, /* seg_byte_pos */
- 0, /* tape_pos */
- 0 /* volume_pos */
-};
-unsigned int zft_blk_sz = CONFIG_ZFT_DFLT_BLK_SZ;
-__s64 zft_capacity;
-
-unsigned int zft_written_segments;
-int zft_label_changed;
-
-/* Local vars.
- */
-
-unsigned int zft_get_seg_sz(unsigned int segment)
-{
- int size;
- TRACE_FUN(ft_t_any);
-
- size = FT_SEGMENT_SIZE -
- count_ones(ftape_get_bad_sector_entry(segment))*FT_SECTOR_SIZE;
- if (size > 0) {
- TRACE_EXIT (unsigned)size;
- } else {
- TRACE_EXIT 0;
- }
-}
-
-/* ftape_set_flags(). Claus-Justus Heine, 1994/1995
- */
-void zft_set_flags(unsigned minor_unit)
-{
- TRACE_FUN(ft_t_flow);
-
- zft_use_compression = zft_qic_mode = 0;
- switch (minor_unit & ZFT_MINOR_OP_MASK) {
- case (ZFT_Q80_MODE | ZFT_ZIP_MODE):
- case ZFT_ZIP_MODE:
- zft_use_compression = 1;
- case 0:
- case ZFT_Q80_MODE:
- zft_qic_mode = 1;
- if (zft_mt_compression) { /* override the default */
- zft_use_compression = 1;
- }
- break;
- case ZFT_RAW_MODE:
- TRACE(ft_t_noise, "switching to raw mode");
- break;
- default:
- TRACE(ft_t_warn, "Warning:\n"
- KERN_INFO "Wrong combination of minor device bits.\n"
- KERN_INFO "Switching to raw read-only mode.");
- zft_write_protected = 1;
- break;
- }
- TRACE_EXIT;
-}
-
-/* computes the segment and byte offset inside the segment
- * corresponding to tape_pos.
- *
- * tape_pos gives the offset in bytes from the beginning of the
- * ft_first_data_segment *seg_byte_pos is the offset in the current
- * segment in bytes
- *
- * Of, if this routine was called often one should cache the last data
- * pos it was called with, but actually this is only needed in
- * ftape_seek_block(), that is, almost never.
- */
-int zft_calc_seg_byte_coord(int *seg_byte_pos, __s64 tape_pos)
-{
- int segment;
- int seg_sz;
- TRACE_FUN(ft_t_flow);
-
- if (tape_pos == 0) {
- *seg_byte_pos = 0;
- segment = ft_first_data_segment;
- } else {
- seg_sz = 0;
-
- for (segment = ft_first_data_segment;
- ((tape_pos > 0) && (segment <= ft_last_data_segment));
- segment++) {
- seg_sz = zft_get_seg_sz(segment);
- tape_pos -= seg_sz;
- }
- if(tape_pos >= 0) {
- /* the case tape_pos > != 0 means that the
- * argument tape_pos lies beyond the EOT.
- */
- *seg_byte_pos= 0;
- } else { /* tape_pos < 0 */
- segment--;
- *seg_byte_pos= tape_pos + seg_sz;
- }
- }
- TRACE_EXIT(segment);
-}
-
-/* ftape_calc_tape_pos().
- *
- * computes the offset in bytes from the beginning of the
- * ft_first_data_segment inverse to ftape_calc_seg_byte_coord
- *
- * We should do some caching. But how:
- *
- * Each time the header segments are read in, this routine is called
- * with ft_tracks_per_tape*segments_per_track argumnet. So this should be
- * the time to reset the cache.
- *
- * Also, it might be in the future that the bad sector map gets
- * changed. -> reset the cache
- */
-static int seg_pos;
-static __s64 tape_pos;
-
-__s64 zft_get_capacity(void)
-{
- seg_pos = ft_first_data_segment;
- tape_pos = 0;
-
- while (seg_pos <= ft_last_data_segment) {
- tape_pos += zft_get_seg_sz(seg_pos ++);
- }
- return tape_pos;
-}
-
-__s64 zft_calc_tape_pos(int segment)
-{
- int d1, d2, d3;
- TRACE_FUN(ft_t_any);
-
- if (segment > ft_last_data_segment) {
- TRACE_EXIT zft_capacity;
- }
- if (segment < ft_first_data_segment) {
- TRACE_EXIT 0;
- }
- d2 = segment - seg_pos;
- if (-d2 > 10) {
- d1 = segment - ft_first_data_segment;
- if (-d2 > d1) {
- tape_pos = 0;
- seg_pos = ft_first_data_segment;
- d2 = d1;
- }
- }
- if (d2 > 10) {
- d3 = ft_last_data_segment - segment;
- if (d2 > d3) {
- tape_pos = zft_capacity;
- seg_pos = ft_last_data_segment + 1;
- d2 = -d3;
- }
- }
- if (d2 > 0) {
- while (seg_pos < segment) {
- tape_pos += zft_get_seg_sz(seg_pos++);
- }
- } else {
- while (seg_pos > segment) {
- tape_pos -= zft_get_seg_sz(--seg_pos);
- }
- }
- TRACE(ft_t_noise, "new cached pos: %d", seg_pos);
-
- TRACE_EXIT tape_pos;
-}
-
-/* copy Z-label string to buffer, keeps track of the correct offset in
- * `buffer'
- */
-void zft_update_label(__u8 *buffer)
-{
- TRACE_FUN(ft_t_flow);
-
- if (strncmp(&buffer[FT_LABEL], ZFTAPE_LABEL,
- sizeof(ZFTAPE_LABEL)-1) != 0) {
- TRACE(ft_t_info, "updating label from \"%s\" to \"%s\"",
- &buffer[FT_LABEL], ZFTAPE_LABEL);
- strcpy(&buffer[FT_LABEL], ZFTAPE_LABEL);
- memset(&buffer[FT_LABEL] + sizeof(ZFTAPE_LABEL) - 1, ' ',
- FT_LABEL_SZ - sizeof(ZFTAPE_LABEL + 1));
- PUT4(buffer, FT_LABEL_DATE, 0);
- zft_label_changed = zft_header_changed = 1; /* changed */
- }
- TRACE_EXIT;
-}
-
-int zft_verify_write_segments(unsigned int segment,
- __u8 *data, size_t size,
- __u8 *buffer)
-{
- int result;
- __u8 *write_buf;
- __u8 *src_buf;
- int single;
- int seg_pos;
- int seg_sz;
- int remaining;
- ft_write_mode_t write_mode;
- TRACE_FUN(ft_t_flow);
-
- seg_pos = segment;
- seg_sz = zft_get_seg_sz(seg_pos);
- src_buf = data;
- single = size <= seg_sz;
- remaining = size;
- do {
- TRACE(ft_t_noise, "\n"
- KERN_INFO "remaining: %d\n"
- KERN_INFO "seg_sz : %d\n"
- KERN_INFO "segment : %d",
- remaining, seg_sz, seg_pos);
- if (remaining == seg_sz) {
- write_buf = src_buf;
- write_mode = single ? FT_WR_SINGLE : FT_WR_MULTI;
- remaining = 0;
- } else if (remaining > seg_sz) {
- write_buf = src_buf;
- write_mode = FT_WR_ASYNC; /* don't start tape */
- remaining -= seg_sz;
- } else { /* remaining < seg_sz */
- write_buf = buffer;
- memcpy(write_buf, src_buf, remaining);
- memset(&write_buf[remaining],'\0',seg_sz-remaining);
- write_mode = single ? FT_WR_SINGLE : FT_WR_MULTI;
- remaining = 0;
- }
- if ((result = ftape_write_segment(seg_pos,
- write_buf,
- write_mode)) != seg_sz) {
- TRACE(ft_t_err, "Error: "
- "Couldn't write segment %d", seg_pos);
- TRACE_EXIT result < 0 ? result : -EIO; /* bail out */
- }
- zft_written_segments ++;
- seg_sz = zft_get_seg_sz(++seg_pos);
- src_buf += result;
- } while (remaining > 0);
- if (ftape_get_status()->fti_state == writing) {
- TRACE_CATCH(ftape_loop_until_writes_done(),);
- TRACE_CATCH(ftape_abort_operation(),);
- zft_prevent_flush();
- }
- seg_pos = segment;
- src_buf = data;
- remaining = size;
- do {
- TRACE_CATCH(result = ftape_read_segment(seg_pos, buffer,
- single ? FT_RD_SINGLE
- : FT_RD_AHEAD),);
- if (memcmp(src_buf, buffer,
- remaining > result ? result : remaining) != 0) {
- TRACE_ABORT(-EIO, ft_t_err,
- "Failed to verify written segment %d",
- seg_pos);
- }
- remaining -= result;
- TRACE(ft_t_noise, "verify successful:\n"
- KERN_INFO "segment : %d\n"
- KERN_INFO "segsize : %d\n"
- KERN_INFO "remaining: %d",
- seg_pos, result, remaining);
- src_buf += seg_sz;
- seg_pos++;
- } while (remaining > 0);
- TRACE_EXIT size;
-}
-
-
-/* zft_erase(). implemented compression-handling
- *
- * calculate the first data-segment when using/not using compression.
- *
- * update header-segment and compression-map-segment.
- */
-int zft_erase(void)
-{
- int result = 0;
- TRACE_FUN(ft_t_flow);
-
- if (!zft_header_read) {
- TRACE_CATCH(zft_vmalloc_once((void **)&zft_hseg_buf,
- FT_SEGMENT_SIZE),);
- /* no need to read the vtbl and compression map */
- TRACE_CATCH(ftape_read_header_segment(zft_hseg_buf),);
- if ((zft_old_ftape =
- zft_ftape_validate_label(&zft_hseg_buf[FT_LABEL]))) {
- zft_ftape_extract_file_marks(zft_hseg_buf);
- }
- TRACE(ft_t_noise,
- "ft_first_data_segment: %d, ft_last_data_segment: %d",
- ft_first_data_segment, ft_last_data_segment);
- zft_qic113 = (ft_format_code != fmt_normal &&
- ft_format_code != fmt_1100ft &&
- ft_format_code != fmt_425ft);
- }
- if (zft_old_ftape) {
- zft_clear_ftape_file_marks();
- zft_old_ftape = 0; /* no longer old ftape */
- }
- PUT2(zft_hseg_buf, FT_CMAP_START, 0);
- zft_volume_table_changed = 1;
- zft_capacity = zft_get_capacity();
- zft_init_vtbl();
- /* the rest must be done in ftape_update_header_segments
- */
- zft_header_read = 1;
- zft_header_changed = 1; /* force update of timestamp */
- result = zft_update_header_segments();
-
- ftape_abort_operation();
-
- zft_reset_position(&zft_pos);
- zft_set_flags (zft_unit);
- TRACE_EXIT result;
-}
-
-unsigned int zft_get_time(void)
-{
- unsigned int date = FT_TIME_STAMP(2097, 11, 30, 23, 59, 59); /* fun */
- return date;
-}
diff --git a/drivers/char/ftape/zftape/zftape-rw.h b/drivers/char/ftape/zftape/zftape-rw.h
deleted file mode 100644
index 14c07f08657..00000000000
--- a/drivers/char/ftape/zftape/zftape-rw.h
+++ /dev/null
@@ -1,102 +0,0 @@
-#ifndef _ZFTAPE_RW_H
-#define _ZFTAPE_RW_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/ftape/zftape/zftape-rw.h,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:09 $
- *
- * This file contains the definitions for the read and write
- * functions for the QIC-117 floppy-tape driver for Linux.
- *
- */
-
-#include <linux/config.h> /* for CONFIG_ZFT_DFLT_BLK_SZ */
-#include "../zftape/zftape-buffers.h"
-
-#define SEGMENTS_PER_TAPE (ft_segments_per_track * ft_tracks_per_tape)
-
-/* QIC-113 Rev. G says that `a maximum of 63488 raw bytes may be
- * compressed into a single frame'.
- * Maybe we should stick to 32kb to make it more `beautiful'
- */
-#define ZFT_MAX_BLK_SZ (62*1024) /* bytes */
-#if !defined(CONFIG_ZFT_DFLT_BLK_SZ)
-# define CONFIG_ZFT_DFLT_BLK_SZ (10*1024) /* bytes, default of gnu tar */
-#elif CONFIG_ZFT_DFLT_BLK_SZ == 0
-# undef CONFIG_ZFT_DFLT_BLK_SZ
-# define CONFIG_ZFT_DFLT_BLK_SZ 1
-#elif (CONFIG_ZFT_DFLT_BLK_SZ % 1024) != 0
-# error CONFIG_ZFT_DFLT_BLK_SZ must be 1 or a multiple of 1024
-#endif
-/* The *optional* compression routines need some overhead per tape
- * block for their purposes. Instead of asking the actual compression
- * implementation how much it needs, we restrict this overhead to be
- * maximal of ZFT_CMPT_OVERHEAD size. We need this for EOT
- * conditions. The tape is assumed to be logical at EOT when the
- * distance from the physical EOT is less than
- * one tape block + ZFT_CMPR_OVERHEAD
- */
-#define ZFT_CMPR_OVERHEAD 16 /* bytes */
-
-typedef enum
-{
- zft_idle = 0,
- zft_reading,
- zft_writing,
-} zft_status_enum;
-
-typedef struct /* all values measured in bytes */
-{
- int seg_pos; /* segment currently positioned at */
- int seg_byte_pos; /* offset in current segment */
- __s64 tape_pos; /* real offset from BOT */
- __s64 volume_pos; /* pos. in uncompressed data stream in
- * current volume
- */
-} zft_position;
-
-extern zft_position zft_pos;
-extern __u8 *zft_deblock_buf;
-extern __u8 *zft_hseg_buf;
-extern int zft_deblock_segment;
-extern zft_status_enum zft_io_state;
-extern int zft_header_changed;
-extern int zft_qic113; /* conform to old specs. and old zftape */
-extern int zft_use_compression;
-extern unsigned int zft_blk_sz;
-extern __s64 zft_capacity;
-extern unsigned int zft_written_segments;
-extern int zft_label_changed;
-
-/* zftape-rw.c exported functions
- */
-extern unsigned int zft_get_seg_sz(unsigned int segment);
-extern void zft_set_flags(unsigned int minor_unit);
-extern int zft_calc_seg_byte_coord(int *seg_byte_pos, __s64 tape_pos);
-extern __s64 zft_calc_tape_pos(int segment);
-extern __s64 zft_get_capacity(void);
-extern void zft_update_label(__u8 *buffer);
-extern int zft_erase(void);
-extern int zft_verify_write_segments(unsigned int segment,
- __u8 *data, size_t size, __u8 *buffer);
-extern unsigned int zft_get_time(void);
-#endif /* _ZFTAPE_RW_H */
-
diff --git a/drivers/char/ftape/zftape/zftape-vtbl.c b/drivers/char/ftape/zftape/zftape-vtbl.c
deleted file mode 100644
index ad7f8be6340..00000000000
--- a/drivers/char/ftape/zftape/zftape-vtbl.c
+++ /dev/null
@@ -1,757 +0,0 @@
-/*
- * Copyright (c) 1995-1997 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/ftape/zftape/zftape-vtbl.c,v $
- * $Revision: 1.7.6.1 $
- * $Date: 1997/11/24 13:48:31 $
- *
- * This file defines a volume table as defined in various QIC
- * standards.
- *
- * This is a minimal implementation, just allowing ordinary DOS
- * :( prgrams to identify the cartridge as used.
- */
-
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-
-#include <linux/zftape.h>
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-eof.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-write.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-rw.h"
-#include "../zftape/zftape-vtbl.h"
-
-#define ZFT_CMAP_HACK /* leave this defined to hide the compression map */
-
-/*
- * global variables
- */
-int zft_qic_mode = 1; /* use the vtbl */
-int zft_old_ftape; /* prevents old ftaped tapes to be overwritten */
-int zft_volume_table_changed; /* for write_header_segments() */
-
-/*
- * private variables (only exported for inline functions)
- */
-LIST_HEAD(zft_vtbl);
-
-/* We could also allocate these dynamically when extracting the volume table
- * sizeof(zft_volinfo) is about 32 or something close to that
- */
-static zft_volinfo tape_vtbl;
-static zft_volinfo eot_vtbl;
-static zft_volinfo *cur_vtbl;
-
-static inline void zft_new_vtbl_entry(void)
-{
- struct list_head *tmp = &zft_last_vtbl->node;
- zft_volinfo *new = zft_kmalloc(sizeof(zft_volinfo));
-
- list_add(&new->node, tmp);
- new->count = zft_eom_vtbl->count ++;
-}
-
-void zft_free_vtbl(void)
-{
- for (;;) {
- struct list_head *tmp = zft_vtbl.prev;
- zft_volinfo *vtbl;
-
- if (tmp == &zft_vtbl)
- break;
- list_del(tmp);
- vtbl = list_entry(tmp, zft_volinfo, node);
- zft_kfree(vtbl, sizeof(zft_volinfo));
- }
- INIT_LIST_HEAD(&zft_vtbl);
- cur_vtbl = NULL;
-}
-
-/* initialize vtbl, called by ftape_new_cartridge()
- */
-void zft_init_vtbl(void)
-{
- zft_volinfo *new;
-
- zft_free_vtbl();
-
- /* Create the two dummy vtbl entries
- */
- new = zft_kmalloc(sizeof(zft_volinfo));
- list_add(&new->node, &zft_vtbl);
- new = zft_kmalloc(sizeof(zft_volinfo));
- list_add(&new->node, &zft_vtbl);
- zft_head_vtbl->end_seg = ft_first_data_segment;
- zft_head_vtbl->blk_sz = zft_blk_sz;
- zft_head_vtbl->count = -1;
- zft_eom_vtbl->start_seg = ft_first_data_segment + 1;
- zft_eom_vtbl->end_seg = ft_last_data_segment + 1;
- zft_eom_vtbl->blk_sz = zft_blk_sz;
- zft_eom_vtbl->count = 0;
-
- /* Reset the pointer for zft_find_volume()
- */
- cur_vtbl = zft_eom_vtbl;
-
- /* initialize the dummy vtbl entries for zft_qic_mode == 0
- */
- eot_vtbl.start_seg = ft_last_data_segment + 1;
- eot_vtbl.end_seg = ft_last_data_segment + 1;
- eot_vtbl.blk_sz = zft_blk_sz;
- eot_vtbl.count = -1;
- tape_vtbl.start_seg = ft_first_data_segment;
- tape_vtbl.end_seg = ft_last_data_segment;
- tape_vtbl.blk_sz = zft_blk_sz;
- tape_vtbl.size = zft_capacity;
- tape_vtbl.count = 0;
-}
-
-/* check for a valid VTBL signature.
- */
-static int vtbl_signature_valid(__u8 signature[4])
-{
- const char *vtbl_ids[] = VTBL_IDS; /* valid signatures */
- int j;
-
- for (j = 0;
- (j < NR_ITEMS(vtbl_ids)) && (memcmp(signature, vtbl_ids[j], 4) != 0);
- j++);
- return j < NR_ITEMS(vtbl_ids);
-}
-
-/* We used to store the block-size of the volume in the volume-label,
- * using the keyword "blocksize". The blocksize written to the
- * volume-label is in bytes.
- *
- * We use this now only for compatibility with old zftape version. We
- * store the blocksize directly as binary number in the vendor
- * extension part of the volume entry.
- */
-static int check_volume_label(const char *label, int *blk_sz)
-{
- int valid_format;
- char *blocksize;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "called with \"%s\" / \"%s\"", label, ZFT_VOL_NAME);
- if (strncmp(label, ZFT_VOL_NAME, strlen(ZFT_VOL_NAME)) != 0) {
- *blk_sz = 1; /* smallest block size that we allow */
- valid_format = 0;
- } else {
- TRACE(ft_t_noise, "got old style zftape vtbl entry");
- /* get the default blocksize */
- /* use the kernel strstr() */
- blocksize= strstr(label, " blocksize ");
- if (blocksize) {
- blocksize += strlen(" blocksize ");
- for(*blk_sz= 0;
- *blocksize >= '0' && *blocksize <= '9';
- blocksize++) {
- *blk_sz *= 10;
- *blk_sz += *blocksize - '0';
- }
- if (*blk_sz > ZFT_MAX_BLK_SZ) {
- *blk_sz= 1;
- valid_format= 0;
- } else {
- valid_format = 1;
- }
- } else {
- *blk_sz= 1;
- valid_format= 0;
- }
- }
- TRACE_EXIT valid_format;
-}
-
-/* check for a zftape volume
- */
-static int check_volume(__u8 *entry, zft_volinfo *volume)
-{
- TRACE_FUN(ft_t_flow);
-
- if(strncmp(&entry[VTBL_EXT+EXT_ZFTAPE_SIG], ZFTAPE_SIG,
- strlen(ZFTAPE_SIG)) == 0) {
- TRACE(ft_t_noise, "got new style zftape vtbl entry");
- volume->blk_sz = GET2(entry, VTBL_EXT+EXT_ZFTAPE_BLKSZ);
- volume->qic113 = entry[VTBL_EXT+EXT_ZFTAPE_QIC113];
- TRACE_EXIT 1;
- } else {
- TRACE_EXIT check_volume_label(&entry[VTBL_DESC], &volume->blk_sz);
- }
-}
-
-
-/* create zftape specific vtbl entry, the volume bounds are inserted
- * in the calling function, zft_create_volume_headers()
- */
-static void create_zft_volume(__u8 *entry, zft_volinfo *vtbl)
-{
- TRACE_FUN(ft_t_flow);
-
- memset(entry, 0, VTBL_SIZE);
- memcpy(&entry[VTBL_SIG], VTBL_ID, 4);
- sprintf(&entry[VTBL_DESC], ZFT_VOL_NAME" %03d", vtbl->count);
- entry[VTBL_FLAGS] = (VTBL_FL_NOT_VERIFIED | VTBL_FL_SEG_SPANNING);
- entry[VTBL_M_NO] = 1; /* multi_cartridge_count */
- strcpy(&entry[VTBL_EXT+EXT_ZFTAPE_SIG], ZFTAPE_SIG);
- PUT2(entry, VTBL_EXT+EXT_ZFTAPE_BLKSZ, vtbl->blk_sz);
- if (zft_qic113) {
- PUT8(entry, VTBL_DATA_SIZE, vtbl->size);
- entry[VTBL_CMPR] = VTBL_CMPR_UNREG;
- if (vtbl->use_compression) { /* use compression: */
- entry[VTBL_CMPR] |= VTBL_CMPR_USED;
- }
- entry[VTBL_EXT+EXT_ZFTAPE_QIC113] = 1;
- } else {
- PUT4(entry, VTBL_DATA_SIZE, vtbl->size);
- entry[VTBL_K_CMPR] = VTBL_CMPR_UNREG;
- if (vtbl->use_compression) { /* use compression: */
- entry[VTBL_K_CMPR] |= VTBL_CMPR_USED;
- }
- }
- if (ft_format_code == fmt_big) {
- /* SCSI like vtbl, store the number of used
- * segments as 4 byte value
- */
- PUT4(entry, VTBL_SCSI_SEGS, vtbl->end_seg-vtbl->start_seg + 1);
- } else {
- /* normal, QIC-80MC like vtbl
- */
- PUT2(entry, VTBL_START, vtbl->start_seg);
- PUT2(entry, VTBL_END, vtbl->end_seg);
- }
- TRACE_EXIT;
-}
-
-/* this one creates the volume headers for each volume. It is assumed
- * that buffer already contains the old volume-table, so that vtbl
- * entries without the zft_volume flag set can savely be ignored.
- */
-static void zft_create_volume_headers(__u8 *buffer)
-{
- __u8 *entry;
- struct list_head *tmp;
- zft_volinfo *vtbl;
- TRACE_FUN(ft_t_flow);
-
-#ifdef ZFT_CMAP_HACK
- if((strncmp(&buffer[VTBL_EXT+EXT_ZFTAPE_SIG], ZFTAPE_SIG,
- strlen(ZFTAPE_SIG)) == 0) &&
- buffer[VTBL_EXT+EXT_ZFTAPE_CMAP] != 0) {
- TRACE(ft_t_noise, "deleting cmap volume");
- memmove(buffer, buffer + VTBL_SIZE,
- FT_SEGMENT_SIZE - VTBL_SIZE);
- }
-#endif
- entry = buffer;
- for (tmp = zft_head_vtbl->node.next;
- tmp != &zft_eom_vtbl->node;
- tmp = tmp->next) {
- vtbl = list_entry(tmp, zft_volinfo, node);
- /* we now fill in the values only for newly created volumes.
- */
- if (vtbl->new_volume) {
- create_zft_volume(entry, vtbl);
- vtbl->new_volume = 0; /* clear the flag */
- }
-
- DUMP_VOLINFO(ft_t_noise, &entry[VTBL_DESC], vtbl);
- entry += VTBL_SIZE;
- }
- memset(entry, 0, FT_SEGMENT_SIZE - zft_eom_vtbl->count * VTBL_SIZE);
- TRACE_EXIT;
-}
-
-/* write volume table to tape. Calls zft_create_volume_headers()
- */
-int zft_update_volume_table(unsigned int segment)
-{
- int result = 0;
- __u8 *verify_buf = NULL;
- TRACE_FUN(ft_t_flow);
-
- TRACE_CATCH(result = ftape_read_segment(ft_first_data_segment,
- zft_deblock_buf,
- FT_RD_SINGLE),);
- zft_create_volume_headers(zft_deblock_buf);
- TRACE(ft_t_noise, "writing volume table segment %d", segment);
- if (zft_vmalloc_once(&verify_buf, FT_SEGMENT_SIZE) == 0) {
- TRACE_CATCH(zft_verify_write_segments(segment,
- zft_deblock_buf, result,
- verify_buf),
- zft_vfree(&verify_buf, FT_SEGMENT_SIZE));
- zft_vfree(&verify_buf, FT_SEGMENT_SIZE);
- } else {
- TRACE_CATCH(ftape_write_segment(segment, zft_deblock_buf,
- FT_WR_SINGLE),);
- }
- TRACE_EXIT 0;
-}
-
-/* non zftape volumes are handled in raw mode. Thus we need to
- * calculate the raw amount of data contained in those segments.
- */
-static void extract_alien_volume(__u8 *entry, zft_volinfo *vtbl)
-{
- TRACE_FUN(ft_t_flow);
-
- vtbl->size = (zft_calc_tape_pos(zft_last_vtbl->end_seg+1) -
- zft_calc_tape_pos(zft_last_vtbl->start_seg));
- vtbl->use_compression = 0;
- vtbl->qic113 = zft_qic113;
- if (vtbl->qic113) {
- TRACE(ft_t_noise,
- "Fake alien volume's size from " LL_X " to " LL_X,
- LL(GET8(entry, VTBL_DATA_SIZE)), LL(vtbl->size));
- } else {
- TRACE(ft_t_noise,
- "Fake alien volume's size from %d to " LL_X,
- (int)GET4(entry, VTBL_DATA_SIZE), LL(vtbl->size));
- }
- TRACE_EXIT;
-}
-
-
-/* extract an zftape specific volume
- */
-static void extract_zft_volume(__u8 *entry, zft_volinfo *vtbl)
-{
- TRACE_FUN(ft_t_flow);
-
- if (vtbl->qic113) {
- vtbl->size = GET8(entry, VTBL_DATA_SIZE);
- vtbl->use_compression =
- (entry[VTBL_CMPR] & VTBL_CMPR_USED) != 0;
- } else {
- vtbl->size = GET4(entry, VTBL_DATA_SIZE);
- if (entry[VTBL_K_CMPR] & VTBL_CMPR_UNREG) {
- vtbl->use_compression =
- (entry[VTBL_K_CMPR] & VTBL_CMPR_USED) != 0;
- } else if (entry[VTBL_CMPR] & VTBL_CMPR_UNREG) {
- vtbl->use_compression =
- (entry[VTBL_CMPR] & VTBL_CMPR_USED) != 0;
- } else {
- TRACE(ft_t_warn, "Geeh! There is something wrong:\n"
- KERN_INFO "QIC compression (Rev = K): %x\n"
- KERN_INFO "QIC compression (Rev > K): %x",
- entry[VTBL_K_CMPR], entry[VTBL_CMPR]);
- }
- }
- TRACE_EXIT;
-}
-
-/* extract the volume table from buffer. "buffer" must already contain
- * the vtbl-segment
- */
-int zft_extract_volume_headers(__u8 *buffer)
-{
- __u8 *entry;
- TRACE_FUN(ft_t_flow);
-
- zft_init_vtbl();
- entry = buffer;
-#ifdef ZFT_CMAP_HACK
- if ((strncmp(&entry[VTBL_EXT+EXT_ZFTAPE_SIG], ZFTAPE_SIG,
- strlen(ZFTAPE_SIG)) == 0) &&
- entry[VTBL_EXT+EXT_ZFTAPE_CMAP] != 0) {
- TRACE(ft_t_noise, "ignoring cmap volume");
- entry += VTBL_SIZE;
- }
-#endif
- /* the end of the vtbl is indicated by an invalid signature
- */
- while (vtbl_signature_valid(&entry[VTBL_SIG]) &&
- (entry - buffer) < FT_SEGMENT_SIZE) {
- zft_new_vtbl_entry();
- if (ft_format_code == fmt_big) {
- /* SCSI like vtbl, stores only the number of
- * segments used
- */
- unsigned int num_segments= GET4(entry, VTBL_SCSI_SEGS);
- zft_last_vtbl->start_seg = zft_eom_vtbl->start_seg;
- zft_last_vtbl->end_seg =
- zft_last_vtbl->start_seg + num_segments - 1;
- } else {
- /* `normal', QIC-80 like vtbl
- */
- zft_last_vtbl->start_seg = GET2(entry, VTBL_START);
- zft_last_vtbl->end_seg = GET2(entry, VTBL_END);
- }
- zft_eom_vtbl->start_seg = zft_last_vtbl->end_seg + 1;
- /* check if we created this volume and get the
- * blk_sz
- */
- zft_last_vtbl->zft_volume = check_volume(entry, zft_last_vtbl);
- if (zft_last_vtbl->zft_volume == 0) {
- extract_alien_volume(entry, zft_last_vtbl);
- } else {
- extract_zft_volume(entry, zft_last_vtbl);
- }
- DUMP_VOLINFO(ft_t_noise, &entry[VTBL_DESC], zft_last_vtbl);
- entry +=VTBL_SIZE;
- }
-#if 0
-/*
- * undefine to test end of tape handling
- */
- zft_new_vtbl_entry();
- zft_last_vtbl->start_seg = zft_eom_vtbl->start_seg;
- zft_last_vtbl->end_seg = ft_last_data_segment - 10;
- zft_last_vtbl->blk_sz = zft_blk_sz;
- zft_last_vtbl->zft_volume = 1;
- zft_last_vtbl->qic113 = zft_qic113;
- zft_last_vtbl->size = (zft_calc_tape_pos(zft_last_vtbl->end_seg+1)
- - zft_calc_tape_pos(zft_last_vtbl->start_seg));
-#endif
- TRACE_EXIT 0;
-}
-
-/* this functions translates the failed_sector_log, misused as
- * EOF-marker list, into a virtual volume table. The table mustn't be
- * written to tape, because this would occupy the first data segment,
- * which should be the volume table, but is actually the first segment
- * that is filled with data (when using standard ftape). We assume,
- * that we get a non-empty failed_sector_log.
- */
-int zft_fake_volume_headers (eof_mark_union *eof_map, int num_failed_sectors)
-{
- unsigned int segment, sector;
- int have_eom = 0;
- int vol_no;
- TRACE_FUN(ft_t_flow);
-
- if ((num_failed_sectors >= 2) &&
- (GET2(&eof_map[num_failed_sectors - 1].mark.segment, 0)
- ==
- GET2(&eof_map[num_failed_sectors - 2].mark.segment, 0) + 1) &&
- (GET2(&eof_map[num_failed_sectors - 1].mark.date, 0) == 1)) {
- /* this should be eom. We keep the remainder of the
- * tape as another volume.
- */
- have_eom = 1;
- }
- zft_init_vtbl();
- zft_eom_vtbl->start_seg = ft_first_data_segment;
- for(vol_no = 0; vol_no < num_failed_sectors - have_eom; vol_no ++) {
- zft_new_vtbl_entry();
-
- segment = GET2(&eof_map[vol_no].mark.segment, 0);
- sector = GET2(&eof_map[vol_no].mark.date, 0);
-
- zft_last_vtbl->start_seg = zft_eom_vtbl->start_seg;
- zft_last_vtbl->end_seg = segment;
- zft_eom_vtbl->start_seg = segment + 1;
- zft_last_vtbl->blk_sz = 1;
- zft_last_vtbl->size =
- (zft_calc_tape_pos(zft_last_vtbl->end_seg)
- - zft_calc_tape_pos(zft_last_vtbl->start_seg)
- + (sector-1) * FT_SECTOR_SIZE);
- TRACE(ft_t_noise,
- "failed sector log: segment: %d, sector: %d",
- segment, sector);
- DUMP_VOLINFO(ft_t_noise, "Faked volume", zft_last_vtbl);
- }
- if (!have_eom) {
- zft_new_vtbl_entry();
- zft_last_vtbl->start_seg = zft_eom_vtbl->start_seg;
- zft_last_vtbl->end_seg = ft_last_data_segment;
- zft_eom_vtbl->start_seg = ft_last_data_segment + 1;
- zft_last_vtbl->size = zft_capacity;
- zft_last_vtbl->size -= zft_calc_tape_pos(zft_last_vtbl->start_seg);
- zft_last_vtbl->blk_sz = 1;
- DUMP_VOLINFO(ft_t_noise, "Faked volume",zft_last_vtbl);
- }
- TRACE_EXIT 0;
-}
-
-/* update the internal volume table
- *
- * if before start of last volume: erase all following volumes if
- * inside a volume: set end of volume to infinity
- *
- * this function is intended to be called every time _ftape_write() is
- * called
- *
- * return: 0 if no new volume was created, 1 if a new volume was
- * created
- *
- * NOTE: we don't need to check for zft_mode as ftape_write() does
- * that already. This function gets never called without accessing
- * zftape via the *qft* devices
- */
-
-int zft_open_volume(zft_position *pos, int blk_sz, int use_compression)
-{
- TRACE_FUN(ft_t_flow);
-
- if (!zft_qic_mode) {
- TRACE_EXIT 0;
- }
- if (zft_tape_at_lbot(pos)) {
- zft_init_vtbl();
- if(zft_old_ftape) {
- /* clear old ftape's eof marks */
- zft_clear_ftape_file_marks();
- zft_old_ftape = 0; /* no longer old ftape */
- }
- zft_reset_position(pos);
- }
- if (pos->seg_pos != zft_last_vtbl->end_seg + 1) {
- TRACE_ABORT(-EIO, ft_t_bug,
- "BUG: seg_pos: %d, zft_last_vtbl->end_seg: %d",
- pos->seg_pos, zft_last_vtbl->end_seg);
- }
- TRACE(ft_t_noise, "create new volume");
- if (zft_eom_vtbl->count >= ZFT_MAX_VOLUMES) {
- TRACE_ABORT(-ENOSPC, ft_t_err,
- "Error: maxmimal number of volumes exhausted "
- "(maxmimum is %d)", ZFT_MAX_VOLUMES);
- }
- zft_new_vtbl_entry();
- pos->volume_pos = pos->seg_byte_pos = 0;
- zft_last_vtbl->start_seg = pos->seg_pos;
- zft_last_vtbl->end_seg = ft_last_data_segment; /* infinity */
- zft_last_vtbl->blk_sz = blk_sz;
- zft_last_vtbl->size = zft_capacity;
- zft_last_vtbl->zft_volume = 1;
- zft_last_vtbl->use_compression = use_compression;
- zft_last_vtbl->qic113 = zft_qic113;
- zft_last_vtbl->new_volume = 1;
- zft_last_vtbl->open = 1;
- zft_volume_table_changed = 1;
- zft_eom_vtbl->start_seg = ft_last_data_segment + 1;
- TRACE_EXIT 0;
-}
-
-/* perform mtfsf, mtbsf, not allowed without zft_qic_mode
- */
-int zft_skip_volumes(int count, zft_position *pos)
-{
- const zft_volinfo *vtbl;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "count: %d", count);
-
- vtbl= zft_find_volume(pos->seg_pos);
- while (count > 0 && vtbl != zft_eom_vtbl) {
- vtbl = list_entry(vtbl->node.next, zft_volinfo, node);
- count --;
- }
- while (count < 0 && vtbl != zft_first_vtbl) {
- vtbl = list_entry(vtbl->node.prev, zft_volinfo, node);
- count ++;
- }
- pos->seg_pos = vtbl->start_seg;
- pos->seg_byte_pos = 0;
- pos->volume_pos = 0;
- pos->tape_pos = zft_calc_tape_pos(pos->seg_pos);
- zft_just_before_eof = vtbl->size == 0;
- if (zft_cmpr_ops) {
- (*zft_cmpr_ops->reset)();
- }
- zft_deblock_segment = -1; /* no need to keep cache */
- TRACE(ft_t_noise, "repositioning to:\n"
- KERN_INFO "zft_seg_pos : %d\n"
- KERN_INFO "zft_seg_byte_pos : %d\n"
- KERN_INFO "zft_tape_pos : " LL_X "\n"
- KERN_INFO "zft_volume_pos : " LL_X "\n"
- KERN_INFO "file number : %d",
- pos->seg_pos, pos->seg_byte_pos,
- LL(pos->tape_pos), LL(pos->volume_pos), vtbl->count);
- zft_resid = count < 0 ? -count : count;
- TRACE_EXIT zft_resid ? -EINVAL : 0;
-}
-
-/* the following simply returns the raw data position of the EOM
- * marker, MTIOCSIZE ioctl
- */
-__s64 zft_get_eom_pos(void)
-{
- if (zft_qic_mode) {
- return zft_calc_tape_pos(zft_eom_vtbl->start_seg);
- } else {
- /* there is only one volume in raw mode */
- return zft_capacity;
- }
-}
-
-/* skip to eom, used for MTEOM
- */
-void zft_skip_to_eom(zft_position *pos)
-{
- TRACE_FUN(ft_t_flow);
- pos->seg_pos = zft_eom_vtbl->start_seg;
- pos->seg_byte_pos =
- pos->volume_pos =
- zft_just_before_eof = 0;
- pos->tape_pos = zft_calc_tape_pos(pos->seg_pos);
- TRACE(ft_t_noise, "ftape positioned to segment %d, data pos " LL_X,
- pos->seg_pos, LL(pos->tape_pos));
- TRACE_EXIT;
-}
-
-/* write an EOF-marker by setting zft_last_vtbl->end_seg to seg_pos.
- * NOTE: this function assumes that zft_last_vtbl points to a valid
- * vtbl entry
- *
- * NOTE: this routine always positions before the EOF marker
- */
-int zft_close_volume(zft_position *pos)
-{
- TRACE_FUN(ft_t_any);
-
- if (zft_vtbl_empty || !zft_last_vtbl->open) { /* should not happen */
- TRACE(ft_t_noise, "There are no volumes to finish");
- TRACE_EXIT -EIO;
- }
- if (pos->seg_byte_pos == 0 &&
- pos->seg_pos != zft_last_vtbl->start_seg) {
- pos->seg_pos --;
- pos->seg_byte_pos = zft_get_seg_sz(pos->seg_pos);
- }
- zft_last_vtbl->end_seg = pos->seg_pos;
- zft_last_vtbl->size = pos->volume_pos;
- zft_volume_table_changed = 1;
- zft_just_before_eof = 1;
- zft_eom_vtbl->start_seg = zft_last_vtbl->end_seg + 1;
- zft_last_vtbl->open = 0; /* closed */
- TRACE_EXIT 0;
-}
-
-/* write count file-marks at current position.
- *
- * The tape is positioned after the eof-marker, that is at byte 0 of
- * the segment following the eof-marker
- *
- * this function is only allowed in zft_qic_mode
- *
- * Only allowed when tape is at BOT or EOD.
- */
-int zft_weof(unsigned int count, zft_position *pos)
-{
-
- TRACE_FUN(ft_t_flow);
-
- if (!count) { /* write zero EOF marks should be a real no-op */
- TRACE_EXIT 0;
- }
- zft_volume_table_changed = 1;
- if (zft_tape_at_lbot(pos)) {
- zft_init_vtbl();
- if(zft_old_ftape) {
- /* clear old ftape's eof marks */
- zft_clear_ftape_file_marks();
- zft_old_ftape = 0; /* no longer old ftape */
- }
- }
- if (zft_last_vtbl->open) {
- zft_close_volume(pos);
- zft_move_past_eof(pos);
- count --;
- }
- /* now it's easy, just append eof-marks, that is empty
- * volumes, to the end of the already recorded media.
- */
- while (count > 0 &&
- pos->seg_pos <= ft_last_data_segment &&
- zft_eom_vtbl->count < ZFT_MAX_VOLUMES) {
- TRACE(ft_t_noise,
- "Writing zero sized file at segment %d", pos->seg_pos);
- zft_new_vtbl_entry();
- zft_last_vtbl->start_seg = pos->seg_pos;
- zft_last_vtbl->end_seg = pos->seg_pos;
- zft_last_vtbl->size = 0;
- zft_last_vtbl->blk_sz = zft_blk_sz;
- zft_last_vtbl->zft_volume = 1;
- zft_last_vtbl->use_compression = 0;
- pos->tape_pos += zft_get_seg_sz(pos->seg_pos);
- zft_eom_vtbl->start_seg = ++ pos->seg_pos;
- count --;
- }
- if (count > 0) {
- /* there are two possibilities: end of tape, or the
- * maximum number of files is exhausted.
- */
- zft_resid = count;
- TRACE(ft_t_noise,"Number of marks NOT written: %d", zft_resid);
- if (zft_eom_vtbl->count == ZFT_MAX_VOLUMES) {
- TRACE_ABORT(-EINVAL, ft_t_warn,
- "maximum allowed number of files "
- "exhausted: %d", ZFT_MAX_VOLUMES);
- } else {
- TRACE_ABORT(-ENOSPC,
- ft_t_noise, "reached end of tape");
- }
- }
- TRACE_EXIT 0;
-}
-
-const zft_volinfo *zft_find_volume(unsigned int seg_pos)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_any, "called with seg_pos %d",seg_pos);
- if (!zft_qic_mode) {
- if (seg_pos > ft_last_data_segment) {
- TRACE_EXIT &eot_vtbl;
- }
- tape_vtbl.blk_sz = zft_blk_sz;
- TRACE_EXIT &tape_vtbl;
- }
- if (seg_pos < zft_first_vtbl->start_seg) {
- TRACE_EXIT (cur_vtbl = zft_first_vtbl);
- }
- while (seg_pos > cur_vtbl->end_seg) {
- cur_vtbl = list_entry(cur_vtbl->node.next, zft_volinfo, node);
- TRACE(ft_t_noise, "%d - %d", cur_vtbl->start_seg, cur_vtbl->end_seg);
- }
- while (seg_pos < cur_vtbl->start_seg) {
- cur_vtbl = list_entry(cur_vtbl->node.prev, zft_volinfo, node);
- TRACE(ft_t_noise, "%d - %d", cur_vtbl->start_seg, cur_vtbl->end_seg);
- }
- if (seg_pos > cur_vtbl->end_seg || seg_pos < cur_vtbl->start_seg) {
- TRACE(ft_t_bug, "This cannot happen");
- }
- DUMP_VOLINFO(ft_t_noise, "", cur_vtbl);
- TRACE_EXIT cur_vtbl;
-}
-
-/* this function really assumes that we are just before eof
- */
-void zft_move_past_eof(zft_position *pos)
-{
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_noise, "old seg. pos: %d", pos->seg_pos);
- pos->tape_pos += zft_get_seg_sz(pos->seg_pos++) - pos->seg_byte_pos;
- pos->seg_byte_pos = 0;
- pos->volume_pos = 0;
- if (zft_cmpr_ops) {
- (*zft_cmpr_ops->reset)();
- }
- zft_just_before_eof = 0;
- zft_deblock_segment = -1; /* no need to cache it anymore */
- TRACE(ft_t_noise, "new seg. pos: %d", pos->seg_pos);
- TRACE_EXIT;
-}
diff --git a/drivers/char/ftape/zftape/zftape-vtbl.h b/drivers/char/ftape/zftape/zftape-vtbl.h
deleted file mode 100644
index f31d196d175..00000000000
--- a/drivers/char/ftape/zftape/zftape-vtbl.h
+++ /dev/null
@@ -1,227 +0,0 @@
-#ifndef _ZFTAPE_VTBL_H
-#define _ZFTAPE_VTBL_H
-
-/*
- * Copyright (c) 1995-1997 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/ftape/zftape/zftape-vtbl.h,v $
- * $Revision: 1.3 $
- * $Date: 1997/10/28 14:30:09 $
- *
- * This file defines a volume table as defined in the QIC-80
- * development standards.
- */
-
-#include <linux/list.h>
-
-#include "../lowlevel/ftape-tracing.h"
-
-#include "../zftape/zftape-eof.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-rw.h"
-
-#define VTBL_SIZE 128 /* bytes */
-
-/* The following are offsets in the vtbl. */
-#define VTBL_SIG 0
-#define VTBL_START 4
-#define VTBL_END 6
-#define VTBL_DESC 8
-#define VTBL_DATE 52
-#define VTBL_FLAGS 56
-#define VTBL_FL_VENDOR_SPECIFIC (1<<0)
-#define VTBL_FL_MUTLI_CARTRIDGE (1<<1)
-#define VTBL_FL_NOT_VERIFIED (1<<2)
-#define VTBL_FL_REDIR_INHIBIT (1<<3)
-#define VTBL_FL_SEG_SPANNING (1<<4)
-#define VTBL_FL_DIRECTORY_LAST (1<<5)
-#define VTBL_FL_RESERVED_6 (1<<6)
-#define VTBL_FL_RESERVED_7 (1<<7)
-#define VTBL_M_NO 57
-#define VTBL_EXT 58
-#define EXT_ZFTAPE_SIG 0
-#define EXT_ZFTAPE_BLKSZ 10
-#define EXT_ZFTAPE_CMAP 12
-#define EXT_ZFTAPE_QIC113 13
-#define VTBL_PWD 84
-#define VTBL_DIR_SIZE 92
-#define VTBL_DATA_SIZE 96
-#define VTBL_OS_VERSION 104
-#define VTBL_SRC_DRIVE 106
-#define VTBL_DEV 122
-#define VTBL_RESERVED_1 123
-#define VTBL_CMPR 124
-#define VTBL_CMPR_UNREG 0x3f
-#define VTBL_CMPR_USED 0x80
-#define VTBL_FMT 125
-#define VTBL_RESERVED_2 126
-#define VTBL_RESERVED_3 127
-/* compatibility with pre revision K */
-#define VTBL_K_CMPR 120
-
-/* the next is used by QIC-3020 tapes with format code 6 (>2^16
- * segments) It is specified in QIC-113, Rev. G, Section 5 (SCSI
- * volume table). The difference is simply, that we only store the
- * number of segments used, not the starting segment.
- */
-#define VTBL_SCSI_SEGS 4 /* is a 4 byte value */
-
-/* one vtbl is 128 bytes, that results in a maximum number of
- * 29*1024/128 = 232 volumes.
- */
-#define ZFT_MAX_VOLUMES (FT_SEGMENT_SIZE/VTBL_SIZE)
-#define VTBL_ID "VTBL"
-#define VTBL_IDS { VTBL_ID, "XTBL", "UTID", "EXVT" } /* other valid ids */
-#define ZFT_VOL_NAME "zftape volume" /* volume label used by me */
-#define ZFTAPE_SIG "LINUX ZFT"
-
-/* global variables
- */
-typedef struct zft_internal_vtbl
-{
- struct list_head node;
- int count;
- unsigned int start_seg; /* 32 bits are enough for now */
- unsigned int end_seg; /* 32 bits are enough for now */
- __s64 size; /* uncompressed size */
- unsigned int blk_sz; /* block size for this volume */
- unsigned int zft_volume :1; /* zftape created this volume */
- unsigned int use_compression:1; /* compressed volume */
- unsigned int qic113 :1; /* layout of compressed block
- * info and vtbl conforms to
- * QIC-113, Rev. G
- */
- unsigned int new_volume :1; /* it was created by us, this
- * run. this allows the
- * fields that aren't really
- * used by zftape to be filled
- * in by some user level
- * program.
- */
- unsigned int open :1; /* just in progress of being
- * written
- */
-} zft_volinfo;
-
-extern struct list_head zft_vtbl;
-#define zft_head_vtbl list_entry(zft_vtbl.next, zft_volinfo, node)
-#define zft_eom_vtbl list_entry(zft_vtbl.prev, zft_volinfo, node)
-#define zft_last_vtbl list_entry(zft_eom_vtbl->node.prev, zft_volinfo, node)
-#define zft_first_vtbl list_entry(zft_head_vtbl->node.next, zft_volinfo, node)
-#define zft_vtbl_empty (zft_eom_vtbl->node.prev == &zft_head_vtbl->node)
-
-#define DUMP_VOLINFO(level, desc, info) \
-{ \
- char tmp[21]; \
- strlcpy(tmp, desc, sizeof(tmp)); \
- TRACE(level, "Volume %d:\n" \
- KERN_INFO "description : %s\n" \
- KERN_INFO "first segment: %d\n" \
- KERN_INFO "last segment: %d\n" \
- KERN_INFO "size : " LL_X "\n" \
- KERN_INFO "block size : %d\n" \
- KERN_INFO "compression : %d\n" \
- KERN_INFO "zftape volume: %d\n" \
- KERN_INFO "QIC-113 conf.: %d", \
- (info)->count, tmp, (info)->start_seg, (info)->end_seg, \
- LL((info)->size), (info)->blk_sz, \
- (info)->use_compression != 0, (info)->zft_volume != 0, \
- (info)->qic113 != 0); \
-}
-
-extern int zft_qic_mode;
-extern int zft_old_ftape;
-extern int zft_volume_table_changed;
-
-/* exported functions */
-extern void zft_init_vtbl (void);
-extern void zft_free_vtbl (void);
-extern int zft_extract_volume_headers(__u8 *buffer);
-extern int zft_update_volume_table (unsigned int segment);
-extern int zft_open_volume (zft_position *pos,
- int blk_sz, int use_compression);
-extern int zft_close_volume (zft_position *pos);
-extern const zft_volinfo *zft_find_volume(unsigned int seg_pos);
-extern int zft_skip_volumes (int count, zft_position *pos);
-extern __s64 zft_get_eom_pos (void);
-extern void zft_skip_to_eom (zft_position *pos);
-extern int zft_fake_volume_headers (eof_mark_union *eof_map,
- int num_failed_sectors);
-extern int zft_weof (unsigned int count, zft_position *pos);
-extern void zft_move_past_eof (zft_position *pos);
-
-static inline int zft_tape_at_eod (const zft_position *pos);
-static inline int zft_tape_at_lbot (const zft_position *pos);
-static inline void zft_position_before_eof (zft_position *pos,
- const zft_volinfo *volume);
-static inline __s64 zft_check_for_eof(const zft_volinfo *vtbl,
- const zft_position *pos);
-
-/* this function decrements the zft_seg_pos counter if we are right
- * at the beginning of a segment. This is to handle fsfm/bsfm -- we
- * need to position before the eof mark. NOTE: zft_tape_pos is not
- * changed
- */
-static inline void zft_position_before_eof(zft_position *pos,
- const zft_volinfo *volume)
-{
- TRACE_FUN(ft_t_flow);
-
- if (pos->seg_pos == volume->end_seg + 1 && pos->seg_byte_pos == 0) {
- pos->seg_pos --;
- pos->seg_byte_pos = zft_get_seg_sz(pos->seg_pos);
- }
- TRACE_EXIT;
-}
-
-/* Mmmh. Is the position at the end of the last volume, that is right
- * before the last EOF mark also logical an EOD condition?
- */
-static inline int zft_tape_at_eod(const zft_position *pos)
-{
- TRACE_FUN(ft_t_any);
-
- if (zft_qic_mode) {
- TRACE_EXIT (pos->seg_pos >= zft_eom_vtbl->start_seg ||
- zft_last_vtbl->open);
- } else {
- TRACE_EXIT pos->seg_pos > ft_last_data_segment;
- }
-}
-
-static inline int zft_tape_at_lbot(const zft_position *pos)
-{
- if (zft_qic_mode) {
- return (pos->seg_pos <= zft_first_vtbl->start_seg &&
- pos->volume_pos == 0);
- } else {
- return (pos->seg_pos <= ft_first_data_segment &&
- pos->volume_pos == 0);
- }
-}
-
-/* This one checks for EOF. return remaing space (may be negative)
- */
-static inline __s64 zft_check_for_eof(const zft_volinfo *vtbl,
- const zft_position *pos)
-{
- return (__s64)(vtbl->size - pos->volume_pos);
-}
-
-#endif /* _ZFTAPE_VTBL_H */
diff --git a/drivers/char/ftape/zftape/zftape-write.c b/drivers/char/ftape/zftape/zftape-write.c
deleted file mode 100644
index 94327b8c97b..00000000000
--- a/drivers/char/ftape/zftape/zftape-write.c
+++ /dev/null
@@ -1,483 +0,0 @@
-/*
- * Copyright (C) 1996, 1997 Claus 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/ftape/zftape/zftape-write.c,v $
- * $Revision: 1.3 $
- * $Date: 1997/11/06 00:50:29 $
- *
- * This file contains the writing code
- * for the QIC-117 floppy-tape driver for Linux.
- */
-
-#include <linux/errno.h>
-#include <linux/mm.h>
-
-#include <linux/zftape.h>
-
-#include <asm/uaccess.h>
-
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-eof.h"
-#include "../zftape/zftape-ctl.h"
-#include "../zftape/zftape-write.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-rw.h"
-#include "../zftape/zftape-vtbl.h"
-
-/* Global vars.
- */
-
-/* Local vars.
- */
-static int last_write_failed;
-static int need_flush;
-
-void zft_prevent_flush(void)
-{
- need_flush = 0;
-}
-
-static int zft_write_header_segments(__u8* buffer)
-{
- int header_1_ok = 0;
- int header_2_ok = 0;
- unsigned int time_stamp;
- TRACE_FUN(ft_t_noise);
-
- TRACE_CATCH(ftape_abort_operation(),);
- ftape_seek_to_bot(); /* prevents extra rewind */
- if (GET4(buffer, 0) != FT_HSEG_MAGIC) {
- TRACE_ABORT(-EIO, ft_t_err,
- "wrong header signature found, aborting");
- }
- /* Be optimistic: */
- PUT4(buffer, FT_SEG_CNT,
- zft_written_segments + GET4(buffer, FT_SEG_CNT) + 2);
- if ((time_stamp = zft_get_time()) != 0) {
- PUT4(buffer, FT_WR_DATE, time_stamp);
- if (zft_label_changed) {
- PUT4(buffer, FT_LABEL_DATE, time_stamp);
- }
- }
- TRACE(ft_t_noise,
- "writing first header segment %d", ft_header_segment_1);
- header_1_ok = zft_verify_write_segments(ft_header_segment_1,
- buffer, FT_SEGMENT_SIZE,
- zft_deblock_buf) >= 0;
- TRACE(ft_t_noise,
- "writing second header segment %d", ft_header_segment_2);
- header_2_ok = zft_verify_write_segments(ft_header_segment_2,
- buffer, FT_SEGMENT_SIZE,
- zft_deblock_buf) >= 0;
- if (!header_1_ok) {
- TRACE(ft_t_warn, "Warning: "
- "update of first header segment failed");
- }
- if (!header_2_ok) {
- TRACE(ft_t_warn, "Warning: "
- "update of second header segment failed");
- }
- if (!header_1_ok && !header_2_ok) {
- TRACE_ABORT(-EIO, ft_t_err, "Error: "
- "update of both header segments failed.");
- }
- TRACE_EXIT 0;
-}
-
-int zft_update_header_segments(void)
-{
- TRACE_FUN(ft_t_noise);
-
- /* must NOT use zft_write_protected, as it also includes the
- * file access mode. But we also want to update when soft
- * write protection is enabled (O_RDONLY)
- */
- if (ft_write_protected || zft_old_ftape) {
- TRACE_ABORT(0, ft_t_noise, "Tape set read-only: no update");
- }
- if (!zft_header_read) {
- TRACE_ABORT(0, ft_t_noise, "Nothing to update");
- }
- if (!zft_header_changed) {
- zft_header_changed = zft_written_segments > 0;
- }
- if (!zft_header_changed && !zft_volume_table_changed) {
- TRACE_ABORT(0, ft_t_noise, "Nothing to update");
- }
- TRACE(ft_t_noise, "Updating header segments");
- if (ftape_get_status()->fti_state == writing) {
- TRACE_CATCH(ftape_loop_until_writes_done(),);
- }
- TRACE_CATCH(ftape_abort_operation(),);
-
- zft_deblock_segment = -1; /* invalidate the cache */
- if (zft_header_changed) {
- TRACE_CATCH(zft_write_header_segments(zft_hseg_buf),);
- }
- if (zft_volume_table_changed) {
- TRACE_CATCH(zft_update_volume_table(ft_first_data_segment),);
- }
- zft_header_changed =
- zft_volume_table_changed =
- zft_label_changed =
- zft_written_segments = 0;
- TRACE_CATCH(ftape_abort_operation(),);
- ftape_seek_to_bot();
- TRACE_EXIT 0;
-}
-
-static int read_merge_buffer(int seg_pos, __u8 *buffer, int offset, int seg_sz)
-{
- int result = 0;
- const ft_trace_t old_tracing = TRACE_LEVEL;
- TRACE_FUN(ft_t_flow);
-
- if (zft_qic_mode) {
- /* writing in the middle of a volume is NOT allowed
- *
- */
- TRACE(ft_t_noise, "No need to read a segment");
- memset(buffer + offset, 0, seg_sz - offset);
- TRACE_EXIT 0;
- }
- TRACE(ft_t_any, "waiting");
- ftape_start_writing(FT_WR_MULTI);
- TRACE_CATCH(ftape_loop_until_writes_done(),);
-
- TRACE(ft_t_noise, "trying to read segment %d from offset %d",
- seg_pos, offset);
- SET_TRACE_LEVEL(ft_t_bug);
- result = zft_fetch_segment_fraction(seg_pos, buffer,
- FT_RD_SINGLE,
- offset, seg_sz - offset);
- SET_TRACE_LEVEL(old_tracing);
- if (result != (seg_sz - offset)) {
- TRACE(ft_t_noise, "Ignore error: read_segment() result: %d",
- result);
- memset(buffer + offset, 0, seg_sz - offset);
- }
- TRACE_EXIT 0;
-}
-
-/* flush the write buffer to tape and write an eof-marker at the
- * current position if not in raw mode. This function always
- * positions the tape before the eof-marker. _ftape_close() should
- * then advance to the next segment.
- *
- * the parameter "finish_volume" describes whether to position before
- * or after the possibly created file-mark. We always position after
- * the file-mark when called from ftape_close() and a flush was needed
- * (that is ftape_write() was the last tape operation before calling
- * ftape_flush) But we always position before the file-mark when this
- * function get's called from outside ftape_close()
- */
-int zft_flush_buffers(void)
-{
- int result;
- int data_remaining;
- int this_segs_size;
- TRACE_FUN(ft_t_flow);
-
- TRACE(ft_t_data_flow,
- "entered, ftape_state = %d", ftape_get_status()->fti_state);
- if (ftape_get_status()->fti_state != writing && !need_flush) {
- TRACE_ABORT(0, ft_t_noise, "no need for flush");
- }
- zft_io_state = zft_idle; /* triggers some initializations for the
- * read and write routines
- */
- if (last_write_failed) {
- ftape_abort_operation();
- TRACE_EXIT -EIO;
- }
- TRACE(ft_t_noise, "flushing write buffers");
- this_segs_size = zft_get_seg_sz(zft_pos.seg_pos);
- if (this_segs_size == zft_pos.seg_byte_pos) {
- zft_pos.seg_pos ++;
- data_remaining = zft_pos.seg_byte_pos = 0;
- } else {
- data_remaining = zft_pos.seg_byte_pos;
- }
- /* If there is any data not written to tape yet, append zero's
- * up to the end of the sector (if using compression) or merge
- * it with the data existing on the tape Then write the
- * segment(s) to tape.
- */
- TRACE(ft_t_noise, "Position:\n"
- KERN_INFO "seg_pos : %d\n"
- KERN_INFO "byte pos : %d\n"
- KERN_INFO "remaining: %d",
- zft_pos.seg_pos, zft_pos.seg_byte_pos, data_remaining);
- if (data_remaining > 0) {
- do {
- this_segs_size = zft_get_seg_sz(zft_pos.seg_pos);
- if (this_segs_size > data_remaining) {
- TRACE_CATCH(read_merge_buffer(zft_pos.seg_pos,
- zft_deblock_buf,
- data_remaining,
- this_segs_size),
- last_write_failed = 1);
- }
- result = ftape_write_segment(zft_pos.seg_pos,
- zft_deblock_buf,
- FT_WR_MULTI);
- if (result != this_segs_size) {
- TRACE(ft_t_err, "flush buffers failed");
- zft_pos.tape_pos -= zft_pos.seg_byte_pos;
- zft_pos.seg_byte_pos = 0;
-
- last_write_failed = 1;
- TRACE_EXIT result;
- }
- zft_written_segments ++;
- TRACE(ft_t_data_flow,
- "flush, moved out buffer: %d", result);
- /* need next segment for more data (empty segments?)
- */
- if (result < data_remaining) {
- if (result > 0) {
- /* move remainder to buffer beginning
- */
- memmove(zft_deblock_buf,
- zft_deblock_buf + result,
- FT_SEGMENT_SIZE - result);
- }
- }
- data_remaining -= result;
- zft_pos.seg_pos ++;
- } while (data_remaining > 0);
- TRACE(ft_t_any, "result: %d", result);
- zft_deblock_segment = --zft_pos.seg_pos;
- if (data_remaining == 0) { /* first byte next segment */
- zft_pos.seg_byte_pos = this_segs_size;
- } else { /* after data previous segment, data_remaining < 0 */
- zft_pos.seg_byte_pos = data_remaining + result;
- }
- } else {
- TRACE(ft_t_noise, "zft_deblock_buf empty");
- zft_pos.seg_pos --;
- zft_pos.seg_byte_pos = zft_get_seg_sz (zft_pos.seg_pos);
- ftape_start_writing(FT_WR_MULTI);
- }
- TRACE(ft_t_any, "waiting");
- if ((result = ftape_loop_until_writes_done()) < 0) {
- /* that's really bad. What to to with zft_tape_pos?
- */
- TRACE(ft_t_err, "flush buffers failed");
- }
- TRACE(ft_t_any, "zft_seg_pos: %d, zft_seg_byte_pos: %d",
- zft_pos.seg_pos, zft_pos.seg_byte_pos);
- last_write_failed =
- need_flush = 0;
- TRACE_EXIT result;
-}
-
-/* return-value: the number of bytes removed from the user-buffer
- *
- * out:
- * int *write_cnt: how much actually has been moved to the
- * zft_deblock_buf
- * int req_len : MUST NOT BE CHANGED, except at EOT, in
- * which case it may be adjusted
- * in :
- * char *buff : the user buffer
- * int buf_pos_write : copy of buf_len_wr int
- * this_segs_size : the size in bytes of the actual segment
- * char
- * *zft_deblock_buf : zft_deblock_buf
- */
-static int zft_simple_write(int *cnt,
- __u8 *dst_buf, const int seg_sz,
- const __u8 __user *src_buf, const int req_len,
- const zft_position *pos,const zft_volinfo *volume)
-{
- int space_left;
- TRACE_FUN(ft_t_flow);
-
- /* volume->size holds the tape capacity while volume is open */
- if (pos->tape_pos + volume->blk_sz > volume->size) {
- TRACE_EXIT -ENOSPC;
- }
- /* remaining space in this segment, NOT zft_deblock_buf
- */
- space_left = seg_sz - pos->seg_byte_pos;
- *cnt = req_len < space_left ? req_len : space_left;
- if (copy_from_user(dst_buf + pos->seg_byte_pos, src_buf, *cnt) != 0) {
- TRACE_EXIT -EFAULT;
- }
- TRACE_EXIT *cnt;
-}
-
-static int check_write_access(int req_len,
- const zft_volinfo **volume,
- zft_position *pos,
- const unsigned int blk_sz)
-{
- int result;
- TRACE_FUN(ft_t_flow);
-
- if ((req_len % zft_blk_sz) != 0) {
- TRACE_ABORT(-EINVAL, ft_t_info,
- "write-count %d must be multiple of block-size %d",
- req_len, blk_sz);
- }
- if (zft_io_state == zft_writing) {
- /* all other error conditions have been checked earlier
- */
- TRACE_EXIT 0;
- }
- zft_io_state = zft_idle;
- TRACE_CATCH(zft_check_write_access(pos),);
- /* If we haven't read the header segment yet, do it now.
- * This will verify the configuration, get the bad sector
- * table and read the volume table segment
- */
- if (!zft_header_read) {
- TRACE_CATCH(zft_read_header_segments(),);
- }
- /* fine. Now the tape is either at BOT or at EOD,
- * Write start of volume now
- */
- TRACE_CATCH(zft_open_volume(pos, blk_sz, zft_use_compression),);
- *volume = zft_find_volume(pos->seg_pos);
- DUMP_VOLINFO(ft_t_noise, "", *volume);
- zft_just_before_eof = 0;
- /* now merge with old data if necessary */
- if (!zft_qic_mode && pos->seg_byte_pos != 0){
- result = zft_fetch_segment(pos->seg_pos,
- zft_deblock_buf,
- FT_RD_SINGLE);
- if (result < 0) {
- if (result == -EINTR || result == -ENOSPC) {
- TRACE_EXIT result;
- }
- TRACE(ft_t_noise,
- "ftape_read_segment() result: %d. "
- "This might be normal when using "
- "a newly\nformatted tape", result);
- memset(zft_deblock_buf, '\0', pos->seg_byte_pos);
- }
- }
- zft_io_state = zft_writing;
- TRACE_EXIT 0;
-}
-
-static int fill_deblock_buf(__u8 *dst_buf, const int seg_sz,
- zft_position *pos, const zft_volinfo *volume,
- const char __user *usr_buf, const int req_len)
-{
- int cnt = 0;
- int result = 0;
- TRACE_FUN(ft_t_flow);
-
- if (seg_sz == 0) {
- TRACE_ABORT(0, ft_t_data_flow, "empty segment");
- }
- TRACE(ft_t_data_flow, "\n"
- KERN_INFO "remaining req_len: %d\n"
- KERN_INFO " buf_pos: %d",
- req_len, pos->seg_byte_pos);
- /* zft_deblock_buf will not contain a valid segment any longer */
- zft_deblock_segment = -1;
- if (zft_use_compression) {
- TRACE_CATCH(zft_cmpr_lock(1 /* try to load */),);
- TRACE_CATCH(result= (*zft_cmpr_ops->write)(&cnt,
- dst_buf, seg_sz,
- usr_buf, req_len,
- pos, volume),);
- } else {
- TRACE_CATCH(result= zft_simple_write(&cnt,
- dst_buf, seg_sz,
- usr_buf, req_len,
- pos, volume),);
- }
- pos->volume_pos += result;
- pos->seg_byte_pos += cnt;
- pos->tape_pos += cnt;
- TRACE(ft_t_data_flow, "\n"
- KERN_INFO "removed from user-buffer : %d bytes.\n"
- KERN_INFO "copied to zft_deblock_buf: %d bytes.\n"
- KERN_INFO "zft_tape_pos : " LL_X " bytes.",
- result, cnt, LL(pos->tape_pos));
- TRACE_EXIT result;
-}
-
-
-/* called by the kernel-interface routine "zft_write()"
- */
-int _zft_write(const char __user *buff, int req_len)
-{
- int result = 0;
- int written = 0;
- int write_cnt;
- int seg_sz;
- static const zft_volinfo *volume = NULL;
- TRACE_FUN(ft_t_flow);
-
- zft_resid = req_len;
- last_write_failed = 1; /* reset to 0 when successful */
- /* check if write is allowed
- */
- TRACE_CATCH(check_write_access(req_len, &volume,&zft_pos,zft_blk_sz),);
- while (req_len > 0) {
- /* Allow us to escape from this loop with a signal !
- */
- FT_SIGNAL_EXIT(_DONT_BLOCK);
- seg_sz = zft_get_seg_sz(zft_pos.seg_pos);
- if ((write_cnt = fill_deblock_buf(zft_deblock_buf,
- seg_sz,
- &zft_pos,
- volume,
- buff,
- req_len)) < 0) {
- zft_resid -= written;
- if (write_cnt == -ENOSPC) {
- /* leave the remainder to flush_buffers()
- */
- TRACE(ft_t_info, "No space left on device");
- last_write_failed = 0;
- if (!need_flush) {
- need_flush = written > 0;
- }
- TRACE_EXIT written > 0 ? written : -ENOSPC;
- } else {
- TRACE_EXIT result;
- }
- }
- if (zft_pos.seg_byte_pos == seg_sz) {
- TRACE_CATCH(ftape_write_segment(zft_pos.seg_pos,
- zft_deblock_buf,
- FT_WR_ASYNC),
- zft_resid -= written);
- zft_written_segments ++;
- zft_pos.seg_byte_pos = 0;
- zft_deblock_segment = zft_pos.seg_pos;
- ++zft_pos.seg_pos;
- }
- written += write_cnt;
- buff += write_cnt;
- req_len -= write_cnt;
- } /* while (req_len > 0) */
- TRACE(ft_t_data_flow, "remaining in blocking buffer: %d",
- zft_pos.seg_byte_pos);
- TRACE(ft_t_data_flow, "just written bytes: %d", written);
- last_write_failed = 0;
- zft_resid -= written;
- need_flush = need_flush || written > 0;
- TRACE_EXIT written; /* bytes written */
-}
diff --git a/drivers/char/ftape/zftape/zftape-write.h b/drivers/char/ftape/zftape/zftape-write.h
deleted file mode 100644
index ea887015b49..00000000000
--- a/drivers/char/ftape/zftape/zftape-write.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef _ZFTAPE_WRITE_H
-#define _ZFTAPE_WRITE_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/ftape/zftape/zftape-write.h,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:19:13 $
- *
- * This file contains the definitions for the write functions
- * for the zftape driver for Linux.
- *
- */
-
-extern int zft_flush_buffers(void);
-extern int zft_update_header_segments(void);
-extern void zft_prevent_flush(void);
-
-/* hook for the VFS interface
- */
-extern int _zft_write(const char __user *buff, int req_len);
-#endif /* _ZFTAPE_WRITE_H */
diff --git a/drivers/char/ftape/zftape/zftape_syms.c b/drivers/char/ftape/zftape/zftape_syms.c
deleted file mode 100644
index 2db1401682d..00000000000
--- a/drivers/char/ftape/zftape/zftape_syms.c
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (C) 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/ftape/zftape/zftape_syms.c,v $
- * $Revision: 1.3 $
- * $Date: 1997/10/05 19:19:14 $
- *
- * This file contains the symbols that the zftape frontend to
- * the ftape floppy tape driver exports
- */
-
-#include <linux/module.h>
-
-#include <linux/zftape.h>
-
-#include "../zftape/zftape-init.h"
-#include "../zftape/zftape-read.h"
-#include "../zftape/zftape-buffers.h"
-#include "../zftape/zftape-ctl.h"
-
-/* zftape-init.c */
-EXPORT_SYMBOL(zft_cmpr_register);
-/* zftape-read.c */
-EXPORT_SYMBOL(zft_fetch_segment_fraction);
-/* zftape-buffers.c */
-EXPORT_SYMBOL(zft_vmalloc_once);
-EXPORT_SYMBOL(zft_vmalloc_always);
-EXPORT_SYMBOL(zft_vfree);