[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | clusmap.c -- various file structure utilities
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| 4 | Version 9 -- 1987-10-29 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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| 8 | #include "biosdefs.h"
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| 9 | #include "errno.h"
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| 10 | #include "io.h"
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| 11 | #include "stdio.h"
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| 12 | #include "stddefs.h"
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| 13 |
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| 14 | extern int micons(), _gtcl12();
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| 15 | extern long miconl();
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| 16 |
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| 17 | extern struct bpb *_thebpb;
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| 18 | extern short _thefat[];
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| 19 |
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| 20 | extern int _filecl(), _noper();
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| 21 |
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| 22 | /* |
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| 23 |
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| 24 | */
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| 25 |
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| 26 | static char *mfname[] = { /* FCB flag names */
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| 27 |
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| 28 | "?D0", /* D0 - 0001 */
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| 29 | "?D1", /* D1 - 0002 */
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| 30 | "?D2", /* D2 - 0004 */
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| 31 | "?D3", /* D3 - 0008 */
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| 32 |
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| 33 | "BF ", /* D4 - 0010 */
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| 34 | "NB ", /* D5 - 0020 */
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| 35 | "TR ", /* D6 - 0040 */
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| 36 | "EX ", /* D7 - 0080 */
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| 37 |
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| 38 | "RD ", /* D8 - 0100 */
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| 39 | "WR ", /* D9 - 0200 */
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| 40 | "AP ", /* D10 - 0400 */
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| 41 | "CR ", /* D11 - 0800 */
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| 42 |
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| 43 | "OPN", /* D12 - 1000 */
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| 44 | "ERR", /* D13 - 2000 */
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| 45 | "BAD", /* D14 - 4000 */
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| 46 | "EOF" /* D15 - 8000 */
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| 47 | };
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| 48 |
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| 49 | /* |
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| 50 |
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| 51 | */
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| 52 |
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| 53 | static char *dfname[] = {
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| 54 |
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| 55 | "RDONLY", /* D0 - 01 */
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| 56 | "HIDDEN", /* D1 - 02 */
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| 57 | "SYSTEM", /* D2 - 04 */
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| 58 | "VOLUME", /* D3 - 08 */
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| 59 | "SUBDIR", /* D4 - 10 */
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| 60 | "ARCHIV", /* D5 - 20 */
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| 61 | "??D6??", /* D6 - 40 */
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| 62 | "??D7??" /* D7 - 80 */
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| 63 | };
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| 64 |
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| 65 | static char *ffname[] = {
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| 66 |
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| 67 | "BUSY ", /* D0 - 01 */
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| 68 | "ALLBUF", /* D1 - 02 */
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| 69 | "DIRTY ", /* D2 - 04 */
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| 70 | "EOF ", /* D3 - 08 */
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| 71 | "IOERR ", /* D4 - 10 */
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| 72 | "??D5??", /* D5 - 20 */
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| 73 | "??D6??", /* D6 - 40 */
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| 74 | "??D7??" /* D7 - 80 */
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| 75 | };
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| 76 |
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| 77 | /* |
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| 78 |
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| 79 | */
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| 80 |
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| 81 | static int
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| 82 | waitcr()
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| 83 | {
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| 84 | char c;
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| 85 |
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| 86 | BIOS(B_PUTC, CON_DEV, '\007');
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| 87 |
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| 88 | while ('\r' NE (c = (0x7F & BIOS(B_GETC, CON_DEV))))
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| 89 | if (c EQ '\007')
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| 90 | xtrap15();
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| 91 | }
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| 92 |
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| 93 | /* |
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| 94 |
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| 95 | */
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| 96 |
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| 97 | /*
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| 98 | =============================================================================
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| 99 | ClusMap(fcp) -- print a map of the clusters for the file associated with
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| 100 | the FCB pointed to by 'fcp'. Nothing is printed if the file isn't open.
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| 101 | Returns 0 if a map was printed, -1 otherwise.
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| 102 | =============================================================================
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| 103 | */
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| 104 |
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| 105 | int
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| 106 | ClusMap(fcp)
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| 107 | struct fcb *fcp;
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| 108 | {
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| 109 | int clus, nc;
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| 110 | long alsize, bused, bunused;
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| 111 |
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| 112 | if (!(fcp->modefl & FC_OPN)) {
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| 113 |
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| 114 | errno = EINVAL;
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| 115 | return(FAILURE);
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| 116 | }
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| 117 |
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| 118 | nc = 0;
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| 119 | clus = micons(fcp->de.bclust);
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| 120 |
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| 121 | if (clus) {
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| 122 |
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| 123 | printf("Allocated cluster chain for [%-8.8s].[%-3.3s]:\n%6d",
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| 124 | fcp->de.fname, fcp->de.fext, clus);
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| 125 | nc = 1;
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| 126 |
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| 127 | while (clus < 0xFF0) {
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| 128 |
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| 129 | clus = _gtcl12(_thefat, clus);
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| 130 |
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| 131 | if (clus < 0xFF0) {
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| 132 |
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| 133 | nc++;
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| 134 |
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| 135 | if (0 EQ (nc-1) % 10)
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| 136 | printf("\n");
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| 137 |
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| 138 | printf("%6d", clus);
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| 139 | }
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| 140 | }
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| 141 | }
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| 142 |
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| 143 | alsize = nc * _thebpb->clsizb;
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| 144 | bused = fcp->curlen;
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| 145 | bunused = alsize - bused;
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| 146 |
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| 147 | printf("\nFAT cluster count=%d, asects=%ld\n", nc, fcp->asects);
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| 148 | printf("%ld bytes allocated, %ld bytes used", alsize, bused);
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| 149 |
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| 150 | if (alsize GE bused)
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| 151 | printf(", %ld bytes unused", bunused);
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| 152 |
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| 153 | printf("\n");
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| 154 |
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| 155 | if (bused GT alsize)
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| 156 | printf("ERROR: directory file size exceeds FAT allocation\n");
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| 157 |
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| 158 | if (fcp->asects NE nc)
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| 159 | printf("ERROR: FAT cluster count (%d) NE FCB cluster count (%ld)\n",
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| 160 | nc, fcp->asects);
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| 161 | return(SUCCESS);
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| 162 | }
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| 163 |
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| 164 | /* |
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| 165 |
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| 166 | */
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| 167 |
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| 168 | /*
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| 169 | =============================================================================
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| 170 | FCBmode(fcp) -- print FCB mode flags
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| 171 | =============================================================================
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| 172 | */
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| 173 |
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| 174 | struct fcb *
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| 175 | FCBmode(fcp)
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| 176 | register struct fcb *fcp;
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| 177 | {
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| 178 | register unsigned short mf;
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| 179 | register short i;
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| 180 |
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| 181 | printf(" flags: ");
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| 182 | mf = 0x0001;
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| 183 |
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| 184 | for (i = 0; i < 16; i++) {
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| 185 |
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| 186 | if (fcp->modefl & mf)
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| 187 | printf("%s ", mfname[i]);
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| 188 |
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| 189 | mf <<= 1;
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| 190 | }
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| 191 |
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| 192 | printf("\n atrib: ");
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| 193 |
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| 194 | mf = 0x01;
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| 195 |
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| 196 | for (i = 0; i < 8; i++) {
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| 197 |
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| 198 | if (fcp->de.atrib & mf)
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| 199 | printf("%s ", dfname[i]);
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| 200 |
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| 201 | mf <<= 1;
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| 202 | }
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| 203 |
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| 204 | printf("\n");
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| 205 | return(fcp);
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| 206 | }
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| 207 |
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| 208 |
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| 209 | /* |
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| 210 |
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| 211 | */
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| 212 |
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| 213 | /*
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| 214 | =============================================================================
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| 215 | SnapFCB(fcp) -- print contents of an FCB pointed to by 'fcp'
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| 216 | =============================================================================
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| 217 | */
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| 218 |
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| 219 | struct fcb *
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| 220 | SnapFCB(fcp)
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| 221 | register struct fcb *fcp;
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| 222 | {
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| 223 | printf("\nFCB at 0x%08lx: [%-8.8s].[%-3.3s]\n",
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| 224 | fcp, fcp->de.fname, fcp->de.fext);
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| 225 | FCBmode(fcp);
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| 226 |
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| 227 | printf(" atrib 0x%04x", fcp->de.atrib);
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| 228 | printf(" modefl 0x%04x\n", fcp->modefl);
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| 229 |
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| 230 | printf(" crtime 0x%04x", micons(fcp->de.crtime));
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| 231 | printf(" crdate 0x%04x\n", micons(fcp->de.crdate));
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| 232 |
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| 233 | printf(" asects %8ld", fcp->asects);
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| 234 | printf(" flen %8ld", miconl(fcp->de.flen));
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| 235 | printf(" curlen %8ld\n", fcp->curlen);
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| 236 |
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| 237 | printf(" bclust %8d", micons(fcp->de.bclust));
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| 238 | printf(" curcls %8d", fcp->curcls);
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| 239 | printf(" clsec %8d\n", fcp->clsec);
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| 240 |
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| 241 | printf(" curlsn %8ld", fcp->curlsn);
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| 242 | printf(" curdsn %8ld", fcp->curdsn);
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| 243 | printf(" offset %8d\n", fcp->offset);
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| 244 |
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| 245 | printf("\n");
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| 246 | return(fcp);
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| 247 | }
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| 248 |
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| 249 | /* |
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| 250 |
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| 251 | */
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| 252 |
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| 253 | /*
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| 254 | =============================================================================
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| 255 | MapFAT() -- print the first 'ncl' cluster entries from 'fat'
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| 256 | =============================================================================
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| 257 | */
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| 258 |
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| 259 | MapFAT(fat, ncl, stops)
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| 260 | register char *fat;
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| 261 | short ncl, stops;
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| 262 | {
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| 263 | register int i;
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| 264 |
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| 265 | printf("\nCluster dump of FAT at 0x%08.8lx (%d entries):\n",
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| 266 | fat, ncl);
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| 267 | printf(" 0: .... .... ");
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| 268 |
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| 269 | for (i = 2; i < ncl; i++) {
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| 270 |
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| 271 | if ((i % 10) EQ 0)
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| 272 | printf("\n%4.4d: ", i);
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| 273 |
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| 274 | printf("%4.4d ", _gtcl12(fat, i));
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| 275 |
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| 276 | /* stop every 10 lines if requested */
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| 277 |
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| 278 | if (stops AND (((i / 10) % 10) EQ 0))
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| 279 | waitcr();
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| 280 | }
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| 281 |
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| 282 | printf("\n");
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| 283 | }
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| 284 |
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| 285 | /* |
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| 286 |
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| 287 | */
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| 288 |
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| 289 | /*
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| 290 | =============================================================================
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| 291 | FILEfl() -- print FILE flags
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| 292 | =============================================================================
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| 293 | */
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| 294 |
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| 295 | FILE *
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| 296 | FILEfl(fp)
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| 297 | FILE *fp;
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| 298 | {
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| 299 | register unsigned short mf;
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| 300 | register short i;
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| 301 |
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| 302 | printf(" _flags: ");
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| 303 | mf = 0x0001;
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| 304 |
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| 305 | for (i = 0; i < 8; i++) {
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| 306 |
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| 307 | if (fp->_flags & mf)
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| 308 | printf("%s ", ffname[i]);
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| 309 |
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| 310 | mf <<= 1;
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| 311 | }
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| 312 |
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| 313 | printf("\n");
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| 314 | return(fp);
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| 315 | }
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| 316 |
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| 317 | /* |
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| 318 |
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| 319 | */
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| 320 |
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| 321 | /*
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| 322 | =============================================================================
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| 323 | FILEpr(fp) -- print contents of a FILE structure pointed to by 'fp'
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| 324 | =============================================================================
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| 325 | */
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| 326 |
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| 327 | FILEpr(fp)
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| 328 | FILE *fp;
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| 329 | {
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| 330 | int (*arg)(), ft;
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| 331 | char *ds, *fsn, *fse;
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| 332 | struct fcb *fcp;
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| 333 |
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| 334 | if (fp EQ (FILE *)0L) {
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| 335 |
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| 336 | printf("FILEpr(): ERROR - argument was NULL\n");
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| 337 | return;
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| 338 | }
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[df097bf] | 339 |
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[f40a309] | 340 |
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| 341 | printf("\nFILE at $%08.8lX", fp);
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| 342 |
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| 343 | arg = chantab[fp->_unit].c_close;
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| 344 | ft = 0;
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| 345 |
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| 346 | if (arg EQ _noper) {
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| 347 |
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| 348 | ds = ((struct devtabl *)chantab[fp->_unit].c_arg)->d_name;
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| 349 | printf(" is a device: [%s]\n", ds);
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| 350 |
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| 351 | } else if (arg EQ _filecl) {
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| 352 |
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| 353 | ft = 1;
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| 354 | fcp = (struct fcb *)chantab[fp->_unit].c_arg;
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| 355 | fsn = fcp->de.fname;
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| 356 | fse = fcp->de.fext;
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| 357 | printf(" is a disk file: [%8.8s].[%3.3s], fcb at $%08.8lX\n",
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| 358 | fsn, fse, fcp);
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| 359 |
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| 360 | } else {
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| 361 |
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| 362 | printf(" is of UNKNOWN type: c_close=$%08.8lX, c_arg=$%08.8lX\n",
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| 363 | arg, chantab[fp->_unit].c_arg);
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| 364 | }
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| 365 |
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| 366 | printf(" _buff=$%08.8lX, _bp=$%08.8lX, _bend=$%08.8lX, _buflen=%u\n",
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| 367 | fp->_buff, fp->_bp, fp->_bend, fp->_buflen);
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| 368 | printf(" _flags=$%04.4X, _unit=%d, _bytbuf=$%02.2X\n",
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| 369 | fp->_flags, fp->_unit, fp->_bytbuf);
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| 370 |
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| 371 | FILEfl(fp);
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| 372 |
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| 373 | if (ft)
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| 374 | SnapFCB(fcp);
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| 375 | else
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| 376 | printf("\n");
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| 377 | }
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| 378 |
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| 379 | /* |
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| 380 |
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| 381 | */
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| 382 |
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| 383 | /*
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| 384 | =============================================================================
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| 385 | fd2fcb() -- convert a unit number to a pointer to a fcb
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| 386 | =============================================================================
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| 387 | */
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| 388 |
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| 389 | struct fcb *
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| 390 | fd2fcb(fd)
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| 391 | short fd;
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| 392 | {
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| 393 | if ((fd < 0) OR (fd > MAXCHAN))
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| 394 | return((struct fcb *)NULL);
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| 395 |
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| 396 | return(chantab[fd].c_arg);
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| 397 | }
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| 398 |
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| 399 | /*
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| 400 | =============================================================================
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| 401 | fp2fcb() -- convert a FILE pointer to a pointer to a fcb
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| 402 | =============================================================================
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| 403 | */
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| 404 |
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| 405 | struct fcb *
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| 406 | fp2fcb(fp)
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| 407 | FILE *fp;
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| 408 | {
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| 409 | if (fp EQ (FILE *)NULL)
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| 410 | return((struct fcb *)NULL);
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| 411 |
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| 412 | return(chantab[fp->_unit].c_arg);
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| 413 | }
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