/*
 * (C) COPYRIGHT IBM CORPORATION 1987
 * LICENSED MATERIALS - PROPERTY OF IBM
 */

/*
 *
 * File		physio.cx
 * NOTE		This is NOT the standard physio.cx for venus or, yet alone, vice.
 *              It is a test one for use in src/dir.
 *
 */

/* First we have the kernel hacks' include files. */
#include <afs/param.h>
#include <sys/param.h>
#ifdef AFS_VFSINCL_ENV
#include <ufs/fsdir.h>
#else AFS_VFSINCL_ENV
#include <sys/dir.h>
#endif AFS_VFSINCL_ENV
#include <sys/user.h>
#define VIRTUE 1
#include <afs/remote.h>
#undef VIRTUE
#include <sys/file.h>
#include <sys/stat.h>
#include <errno.h>
#include <itc.h>
#include <stdio.h>
#include <rx/xdr.h>

/* Here are the include file(s) for the light-weight process facility. */
#include "lwp.h"
#include "lock.h"

#define PAGESIZE 2048

ReallyRead(fid, block, data)
    long *fid;		/* View the fid as longs. */
    long block;
    char *data;
    {/* Do a real read. */
    char fname[100];
    int s, code;
    sprintf(fname, "F%d", *fid);
    s = open(fname,O_RDONLY,0644);
    if (s<0) Die("can't open cache file");
    code=lseek(s,PAGESIZE*block,0);
    if (code<0) Die("r:lseek");
    code=read(s,data,PAGESIZE);
    if (code<0) {
	Die("read");
    }
    close(s);
    return 0;
    }

ReallyWrite(fid, block, data)
    long *fid;		/* View the fid as longs. */
    long block;
    char *data;
    {/* Do a real write. */
    char fname[100];
    int s, code;
    sprintf(fname, "F%d", *fid);
    s = open(fname,O_RDWR|O_CREAT,0644);
    if (s<0) Die("can't find cache file");
    code = lseek(s,PAGESIZE*block,0);
    if (code<0) Die("w:lseek");
    code=write(s,data,PAGESIZE);
    if (code<0) Die("write");
    close(s);
    return 0;
    }


/* The following three routines provide the fid routines used by the buffer and directory packages. */

int FidZap (afid)
register long *afid;
    {/* Zero out a file */
    *afid = 0;
    }

int FidZero (afid)
register long *afid;
    {/* Zero out a file */
    *afid = 0;
    }

int FidEq (afid, bfid)
register long *afid, *bfid;
    {/* Compare two fids for equality. */
    if (*afid != *bfid) return 0;
    return 1;
    }

int FidVolEq (afid, bfid)
register long *afid, *bfid;
    {/* Is fid in a particular volume */
    return 1;
    }

int FidCpy (dfid,sfid)
register long *dfid, *sfid;
    {/* Assign one fid to another. */
    *dfid = *sfid;
    }

Die(arg)
char *arg;
    {/* Print an error message and then exit. */
    int i,j;
    printf("Fatal error: %s\n",arg);

    i=1;
    j=0;
    i = i/j;

    exit(1);
    }