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Diffstat (limited to 'drivers/char/ftape/zftape/zftape-init.c')
-rw-r--r--drivers/char/ftape/zftape/zftape-init.c377
1 files changed, 0 insertions, 377 deletions
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);
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