source: buchla-68k/libcio/clusmap.c

Last change on this file was 99cac86, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Simplify kind handling.
  • Property mode set to 100644
File size: 7.1 KB
Line 
1/*
2 =============================================================================
3 clusmap.c -- various file structure utilities
4 Version 9 -- 1987-10-29 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#include "ram.h"
9
10static int8_t *mfname[] = { /* FCB flag names */
11
12 "?D0", /* D0 - 0001 */
13 "?D1", /* D1 - 0002 */
14 "?D2", /* D2 - 0004 */
15 "?D3", /* D3 - 0008 */
16
17 "BF ", /* D4 - 0010 */
18 "NB ", /* D5 - 0020 */
19 "TR ", /* D6 - 0040 */
20 "EX ", /* D7 - 0080 */
21
22 "RD ", /* D8 - 0100 */
23 "WR ", /* D9 - 0200 */
24 "AP ", /* D10 - 0400 */
25 "CR ", /* D11 - 0800 */
26
27 "OPN", /* D12 - 1000 */
28 "ERR", /* D13 - 2000 */
29 "BAD", /* D14 - 4000 */
30 "EOF" /* D15 - 8000 */
31};
32
33static int8_t *dfname[] = {
34
35 "RDONLY", /* D0 - 01 */
36 "HIDDEN", /* D1 - 02 */
37 "SYSTEM", /* D2 - 04 */
38 "VOLUME", /* D3 - 08 */
39 "SUBDIR", /* D4 - 10 */
40 "ARCHIV", /* D5 - 20 */
41 "??D6??", /* D6 - 40 */
42 "??D7??" /* D7 - 80 */
43};
44
45static int8_t *ffname[] = {
46
47 "BUSY ", /* D0 - 01 */
48 "ALLBUF", /* D1 - 02 */
49 "DIRTY ", /* D2 - 04 */
50 "EOF ", /* D3 - 08 */
51 "IOERR ", /* D4 - 10 */
52 "??D5??", /* D5 - 20 */
53 "??D6??", /* D6 - 40 */
54 "??D7??" /* D7 - 80 */
55};
56
57/*
58 =============================================================================
59 ClusMap(fcp) -- print a map of the clusters for the file associated with
60 the FCB pointed to by 'fcp'. Nothing is printed if the file isn't open.
61 Returns 0 if a map was printed, -1 otherwise.
62 =============================================================================
63*/
64
65int16_t ClusMap(struct fcb *fcp)
66{
67 int16_t clus, nc;
68 int32_t alsize, bused, bunused;
69
70 if (!(fcp->modefl & FC_OPN)) {
71
72 errno = EINVAL;
73 return(FAILURE);
74 }
75
76 nc = 0;
77 clus = (int16_t)micon16(fcp->de.bclust);
78
79 if (clus) {
80
81 printf("Allocated cluster chain for [%-8.8s].[%-3.3s]:\n%6d",
82 fcp->de.fname, fcp->de.fext, clus);
83 nc = 1;
84
85 while (clus < 0xFF0) {
86
87 clus = _gtcl12(_thefat, clus);
88
89 if (clus < 0xFF0) {
90
91 nc++;
92
93 if (0 EQ (nc-1) % 10)
94 printf("\n");
95
96 printf("%6d", clus);
97 }
98 }
99 }
100
101 alsize = nc * _thebpb->clsizb;
102 bused = fcp->curlen;
103 bunused = alsize - bused;
104
105 printf("\nFAT cluster count=%d, asects=%d\n", nc, fcp->asects);
106 printf("%ld bytes allocated, %ld bytes used", alsize, bused);
107
108 if (alsize GE bused)
109 printf(", %ld bytes unused", bunused);
110
111 printf("\n");
112
113 if (bused GT alsize)
114 printf("ERROR: directory file size exceeds FAT allocation\n");
115
116 if (fcp->asects NE nc)
117 printf("ERROR: FAT cluster count (%d) NE FCB cluster count (%ld)\n",
118 nc, fcp->asects);
119 return(SUCCESS);
120}
121
122/*
123 =============================================================================
124 FCBmode(fcp) -- print FCB mode flags
125 =============================================================================
126*/
127
128struct fcb *FCBmode(struct fcb *fcp)
129{
130 register uint16_t mf;
131 register int16_t i;
132
133 printf(" flags: ");
134 mf = 0x0001;
135
136 for (i = 0; i < 16; i++) {
137
138 if (fcp->modefl & mf)
139 printf("%s ", mfname[i]);
140
141 mf <<= 1;
142 }
143
144 printf("\n atrib: ");
145
146 mf = 0x01;
147
148 for (i = 0; i < 8; i++) {
149
150 if (fcp->de.atrib & mf)
151 printf("%s ", dfname[i]);
152
153 mf <<= 1;
154 }
155
156 printf("\n");
157 return(fcp);
158}
159
160/*
161 =============================================================================
162 SnapFCB(fcp) -- print contents of an FCB pointed to by 'fcp'
163 =============================================================================
164*/
165
166struct fcb *SnapFCB(struct fcb *fcp)
167{
168 printf("\nFCB at 0x%08lx: [%-8.8s].[%-3.3s]\n",
169 fcp, fcp->de.fname, fcp->de.fext);
170 FCBmode(fcp);
171
172 printf(" atrib 0x%04x", fcp->de.atrib);
173 printf(" modefl 0x%04x\n", fcp->modefl);
174
175 printf(" crtime 0x%04x", micon16(fcp->de.crtime));
176 printf(" crdate 0x%04x\n", micon16(fcp->de.crdate));
177
178 printf(" asects %8d", fcp->asects);
179 printf(" flen %8ld", micon32(fcp->de.flen));
180 printf(" curlen %8ld\n", fcp->curlen);
181
182 printf(" bclust %8d", micon16(fcp->de.bclust));
183 printf(" curcls %8d", fcp->curcls);
184 printf(" clsec %8d\n", fcp->clsec);
185
186 printf(" curlsn %8d", fcp->curlsn);
187 printf(" curdsn %8d", fcp->curdsn);
188 printf(" offset %8d\n", fcp->offset);
189
190 printf("\n");
191 return(fcp);
192}
193
194/*
195 =============================================================================
196 MapFAT() -- print the first 'ncl' cluster entries from 'fat'
197 =============================================================================
198*/
199
200void MapFAT(uint8_t *fat, int16_t ncl, int16_t stops)
201{
202 register int16_t i;
203
204 printf("\nCluster dump of FAT at 0x%08.8lx (%d entries):\n",
205 fat, ncl);
206 printf(" 0: .... .... ");
207
208 for (i = 2; i < ncl; i++) {
209
210 if ((i % 10) EQ 0)
211 printf("\n%4.4d: ", i);
212
213 printf("%4.4d ", _gtcl12(fat, i));
214
215 /* stop every 10 lines if requested */
216
217 if (stops AND (((i / 10) % 10) EQ 0))
218 waitcr();
219 }
220
221 printf("\n");
222}
223
224/*
225 =============================================================================
226 FILEfl() -- print FILE flags
227 =============================================================================
228*/
229
230FILE *FILEfl(FILE *fp)
231{
232 register uint16_t mf;
233 register int16_t i;
234
235 printf(" _flags: ");
236 mf = 0x0001;
237
238 for (i = 0; i < 8; i++) {
239
240 if (fp->_flags & mf)
241 printf("%s ", ffname[i]);
242
243 mf <<= 1;
244 }
245
246 printf("\n");
247 return(fp);
248}
249
250/*
251 =============================================================================
252 FILEpr(fp) -- print contents of a FILE structure pointed to by 'fp'
253 =============================================================================
254*/
255
256void FILEpr(FILE *fp)
257{
258 chclo arg;
259 int16_t ft;
260 int8_t *fsn, *fse;
261 struct fcb *fcp;
262
263 if (fp EQ (FILE *)0L) {
264
265 printf("FILEpr(): ERROR - argument was NULL\n");
266 return;
267 }
268
269
270 printf("\nFILE at $%08.8lX", fp);
271
272 arg = chantab[fp->_unit].c_close;
273 ft = 0;
274
275 if (arg EQ _nopc) {
276
277 printf(" has device kind: [%d]\n",
278 (int16_t)(int32_t)chantab[fp->_unit].c_arg);
279
280 } else if (arg EQ _filecl) {
281
282 ft = 1;
283 fcp = (struct fcb *)chantab[fp->_unit].c_arg;
284 fsn = fcp->de.fname;
285 fse = fcp->de.fext;
286 printf(" is a disk file: [%8.8s].[%3.3s], fcb at $%08.8lX\n",
287 fsn, fse, fcp);
288
289 } else {
290
291 printf(" is of UNKNOWN type: c_close=$%08.8lX, c_arg=$%08.8lX\n",
292 arg, chantab[fp->_unit].c_arg);
293 }
294
295 printf(" _buff=$%08.8lX, _bp=$%08.8lX, _bend=$%08.8lX, _buflen=%u\n",
296 fp->_buff, fp->_bp, fp->_bend, fp->_buflen);
297 printf(" _flags=$%04.4X, _unit=%d, _bytbuf=$%02.2X\n",
298 fp->_flags, fp->_unit, fp->_bytbuf);
299
300 FILEfl(fp);
301
302 if (ft)
303 SnapFCB(fcp);
304 else
305 printf("\n");
306}
307
308/*
309 =============================================================================
310 fd2fcb() -- convert a unit number to a pointer to a fcb
311 =============================================================================
312*/
313
314struct fcb *fd2fcb(int16_t fd)
315{
316 if ((fd < 0) OR (fd > MAXCHAN))
317 return((struct fcb *)NULL);
318
319 return(chantab[fd].c_arg);
320}
321
322/*
323 =============================================================================
324 fp2fcb() -- convert a FILE pointer to a pointer to a fcb
325 =============================================================================
326*/
327
328struct fcb *fp2fcb(FILE *fp)
329{
330 if (fp EQ (FILE *)NULL)
331 return((struct fcb *)NULL);
332
333 return(chantab[fp->_unit].c_arg);
334}
335
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