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/*
* Miscellaneous routines and data for Linux emulation.
*
* Copyright (C) 1996 The University of Utah and the Computer Systems
* Laboratory at the University of Utah (CSL)
*
* 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; if not, write to the Free Software
* Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Author: Shantanu Goel, University of Utah CSL
*/
/*
* linux/fs/proc/scsi.c
* (c) 1995 Michael Neuffer neuffer@goofy.zdv.uni-mainz.de
*
* The original version was derived from linux/fs/proc/net.c,
* which is Copyright (C) 1991, 1992 Linus Torvalds.
* Much has been rewritten, but some of the code still remains.
*
* /proc/scsi directory handling functions
*
* last change: 95/07/04
*
* Initial version: March '95
* 95/05/15 Added subdirectories for each driver and show every
* registered HBA as a single file.
* 95/05/30 Added rudimentary write support for parameter passing
* 95/07/04 Fixed bugs in directory handling
* 95/09/13 Update to support the new proc-dir tree
*
* TODO: Improve support to write to the driver files
* Add some more comments
*/
/*
* linux/fs/buffer.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
*/
#include <sys/types.h>
#include <mach/vm_param.h>
#include <kern/thread.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
#include <device/device_types.h>
#define MACH_INCLUDE
#include <linux/types.h>
#include <linux/config.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/blk.h>
#include <linux/proc_fs.h>
#include <linux/kernel_stat.h>
extern boolean_t vm_map_lookup_entry (register vm_map_t, register vm_offset_t,
vm_map_entry_t *);
extern int printf (const char *, ...);
int (*dispatch_scsi_info_ptr) (int ino, char *buffer, char **start,
off_t offset, int length, int inout) = 0;
struct kernel_stat kstat;
int
linux_to_mach_error (int err)
{
switch (err)
{
case 0:
return D_SUCCESS;
case -LINUX_EPERM:
return D_INVALID_OPERATION;
case -LINUX_EIO:
return D_IO_ERROR;
case -LINUX_ENXIO:
return D_NO_SUCH_DEVICE;
case -LINUX_EACCES:
return D_INVALID_OPERATION;
case -LINUX_EFAULT:
return D_INVALID_SIZE;
case -LINUX_EBUSY:
return D_ALREADY_OPEN;
case -LINUX_EINVAL:
return D_INVALID_SIZE;
case -LINUX_EROFS:
return D_READ_ONLY;
case -LINUX_EWOULDBLOCK:
return D_WOULD_BLOCK;
case -LINUX_ENOMEM:
return D_NO_MEMORY;
default:
printf ("linux_to_mach_error: unknown code %d\n", err);
return D_IO_ERROR;
}
}
int
issig ()
{
return current_thread ()->wait_result != THREAD_AWAKENED;
}
int
block_fsync (struct inode *inode, struct file *filp)
{
return 0;
}
int
verify_area (int rw, const void *p, unsigned long size)
{
vm_prot_t prot = (rw == VERIFY_WRITE) ? VM_PROT_WRITE : VM_PROT_READ;
vm_offset_t addr = trunc_page ((vm_offset_t) p);
vm_size_t len = round_page ((vm_size_t) size);
vm_map_entry_t entry;
vm_map_lock_read (current_map ());
while (1)
{
if (!vm_map_lookup_entry (current_map (), addr, &entry)
|| (entry->protection & prot) != prot)
{
vm_map_unlock_read (current_map ());
return -LINUX_EFAULT;
}
if (entry->vme_end - entry->vme_start >= len)
break;
len -= entry->vme_end - entry->vme_start;
addr += entry->vme_end - entry->vme_start;
}
vm_map_unlock_read (current_map ());
return 0;
}
/*
* Print device name (in decimal, hexadecimal or symbolic) -
* at present hexadecimal only.
* Note: returns pointer to static data!
*/
char *
kdevname (kdev_t dev)
{
static char buffer[32];
linux_sprintf (buffer, "%02x:%02x", MAJOR (dev), MINOR (dev));
return buffer;
}
/* RO fail safe mechanism */
static long ro_bits[MAX_BLKDEV][8];
int
is_read_only (kdev_t dev)
{
int minor, major;
major = MAJOR (dev);
minor = MINOR (dev);
if (major < 0 || major >= MAX_BLKDEV)
return 0;
return ro_bits[major][minor >> 5] & (1 << (minor & 31));
}
void
set_device_ro (kdev_t dev, int flag)
{
int minor, major;
major = MAJOR (dev);
minor = MINOR (dev);
if (major < 0 || major >= MAX_BLKDEV)
return;
if (flag)
ro_bits[major][minor >> 5] |= 1 << (minor & 31);
else
ro_bits[major][minor >> 5] &= ~(1 << (minor & 31));
}
struct proc_dir_entry proc_scsi;
struct inode_operations proc_scsi_inode_operations;
struct proc_dir_entry proc_net;
struct inode_operations proc_net_inode_operations;
int
proc_register (struct proc_dir_entry *xxx1, struct proc_dir_entry *xxx2)
{
return 0;
}
int
proc_unregister (struct proc_dir_entry *xxx1, int xxx2)
{
return 0;
}
void
add_blkdev_randomness (int major)
{
}
void
do_gettimeofday (struct timeval *tv)
{
host_get_time (1, tv);
}
int
dev_get_info (char *buffer, char **start, off_t offset, int length, int dummy)
{
return 0;
}
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