| 1 | /* |
| 2 | * Copyright 2000, International Business Machines Corporation and others. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * This software has been released under the terms of the IBM Public |
| 6 | * License. For details, see the LICENSE file in the top-level source |
| 7 | * directory or online at http://www.openafs.org/dl/license10.html |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * File physio.cx |
| 12 | * NOTE This is NOT the standard physio.cx for venus or, yet alone, vice. |
| 13 | * It is a test one for use in src/dir. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | /* First we have the kernel hacks' include files. */ |
| 18 | #include <afsconfig.h> |
| 19 | #include <afs/param.h> |
| 20 | |
| 21 | |
| 22 | #include <sys/param.h> |
| 23 | #ifdef AFS_VFSINCL_ENV |
| 24 | #include <ufs/fsdir.h> |
| 25 | #else /* AFS_VFSINCL_ENV */ |
| 26 | #include <sys/dir.h> |
| 27 | #endif /* AFS_VFSINCL_ENV */ |
| 28 | #include <sys/user.h> |
| 29 | #define VIRTUE 1 |
| 30 | #include <afs/remote.h> |
| 31 | #undef VIRTUE |
| 32 | #include <sys/file.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include <errno.h> |
| 35 | #include <itc.h> |
| 36 | #include <stdio.h> |
| 37 | #include <rx/xdr.h> |
| 38 | |
| 39 | /* Here are the include file(s) for the light-weight process facility. */ |
| 40 | #include "lwp.h" |
| 41 | #include "lock.h" |
| 42 | |
| 43 | #define PAGESIZE 2048 |
| 44 | |
| 45 | ReallyRead(fid, block, data) |
| 46 | long *fid; /* View the fid as longs. */ |
| 47 | long block; |
| 48 | char *data; |
| 49 | { /* Do a real read. */ |
| 50 | char fname[100]; |
| 51 | int s, code; |
| 52 | sprintf(fname, "F%d", *fid); |
| 53 | s = open(fname, O_RDONLY, 0644); |
| 54 | if (s < 0) |
| 55 | Die("can't open cache file"); |
| 56 | code = lseek(s, PAGESIZE * block, 0); |
| 57 | if (code < 0) |
| 58 | Die("r:lseek"); |
| 59 | code = read(s, data, PAGESIZE); |
| 60 | if (code < 0) { |
| 61 | Die("read"); |
| 62 | } |
| 63 | close(s); |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | ReallyWrite(fid, block, data) |
| 68 | long *fid; /* View the fid as longs. */ |
| 69 | long block; |
| 70 | char *data; |
| 71 | { /* Do a real write. */ |
| 72 | char fname[100]; |
| 73 | int s, code; |
| 74 | sprintf(fname, "F%d", *fid); |
| 75 | s = open(fname, O_RDWR | O_CREAT, 0644); |
| 76 | if (s < 0) |
| 77 | Die("can't find cache file"); |
| 78 | code = lseek(s, PAGESIZE * block, 0); |
| 79 | if (code < 0) |
| 80 | Die("w:lseek"); |
| 81 | code = write(s, data, PAGESIZE); |
| 82 | if (code < 0) |
| 83 | Die("write"); |
| 84 | close(s); |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | |
| 89 | /* The following three routines provide the fid routines used by the buffer and directory packages. */ |
| 90 | |
| 91 | int |
| 92 | FidZap(afid) |
| 93 | long *afid; |
| 94 | { /* Zero out a file */ |
| 95 | *afid = 0; |
| 96 | } |
| 97 | |
| 98 | int |
| 99 | FidZero(afid) |
| 100 | long *afid; |
| 101 | { /* Zero out a file */ |
| 102 | *afid = 0; |
| 103 | } |
| 104 | |
| 105 | int |
| 106 | FidEq(afid, bfid) |
| 107 | long *afid, *bfid; |
| 108 | { /* Compare two fids for equality. */ |
| 109 | if (*afid != *bfid) |
| 110 | return 0; |
| 111 | return 1; |
| 112 | } |
| 113 | |
| 114 | int |
| 115 | FidVolEq(afid, bfid) |
| 116 | long *afid, *bfid; |
| 117 | { /* Is fid in a particular volume */ |
| 118 | return 1; |
| 119 | } |
| 120 | |
| 121 | int |
| 122 | FidCpy(dfid, sfid) |
| 123 | long *dfid, *sfid; |
| 124 | { /* Assign one fid to another. */ |
| 125 | *dfid = *sfid; |
| 126 | } |
| 127 | |
| 128 | Die(arg) |
| 129 | char *arg; |
| 130 | { /* Print an error message and then exit. */ |
| 131 | int i, j; |
| 132 | printf("Fatal error: %s\n", arg); |
| 133 | |
| 134 | i = 1; |
| 135 | j = 0; |
| 136 | i = i / j; |
| 137 | |
| 138 | exit(1); |
| 139 | } |