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1.1 root 1: static char *sccsid = "@(#)arff.c 4.7 (Berkeley) 81/07/08";
2: #include <sys/types.h>
3: #include <sys/stat.h>
4: #include <time.h>
5: #include <signal.h>
6: #include <stdio.h>
7: #define dbprintf printf
8: struct rt_dat {
9: unsigned short int rt_yr:5; /* Year - 1972 */
10: unsigned short int rt_dy:5; /* day */
11: unsigned short int rt_mo:5; /* month */
12: };
13: struct rt_axent {
14: char rt_sent[14];
15: };
16:
17: struct rt_ent {
18: char rt_pad; /* unusued */
19: char rt_stat; /* Type of entry, or end of seg */
20: unsigned short rt_name[3]; /* Name, 3 words in rad50 form */
21: short rt_len; /* Length of file */
22: char rt_chan; /* Only used in temporary files */
23: char rt_job; /* Only used in temporary files */
24: struct rt_dat rt_date; /* Creation Date */
25: };
26: #define RT_TEMP 1
27: #define RT_NULL 2
28: #define RT_FILE 4
29: #define RT_ESEG 8
30: #define RT_BLOCK 512
31: #define RT_DIRSIZE 31 /* max # of directory segments */
32: struct rt_head {
33: short rt_numseg; /* number of segments available */
34: short rt_nxtseg; /* segment no of next log. seg */
35: short rt_lstseg; /* highest seg currenltly open */
36: unsigned short rt_entpad; /* extra words/dir. entry */
37: short rt_stfile; /* block no where files begin */
38: };
39: struct rt_dir {
40: struct rt_head rt_axhead;
41: struct rt_ent rt_ents[72];
42: char _dirpad[6];
43: };
44: extern struct rt_dir rt_dir[RT_DIRSIZE];
45: extern int rt_entsiz;
46: extern int floppydes;
47: extern char *rt_last;
48: typedef struct fldope {
49: int startad;
50: int count;
51: struct rt_ent *rtdope;
52: } FLDOPE;
53: #define FL_BLOCK 128
54: FLDOPE *lookup();
55: #define rt(p) ((struct rt_ent *) p )
56: #define Ain1 03100
57: #define Ain2 050
58: #define flag(c) (flg[(c) - 'a'])
59:
60: char *man = { "rxtd" };
61:
62: char zeroes[512];
63: extern char *val;
64: extern char table[256];
65: struct rt_dir
66: rt_dir[RT_DIRSIZE] = {{{4,0,1,0,14},{0,RT_NULL,{0,0,0},494,0}, {0,RT_ESEG}}};
67: int rt_entsiz;
68: int rt_nleft;
69: struct rt_ent *rt_curend[RT_DIRSIZE];
70: int floppydes;
71: int dirdirty;
72: char *rt_last;
73: char *defdev = "/dev/floppy";
74:
75: char *opt = { "vf" };
76:
77: int signum[] = {SIGHUP, SIGINT, SIGQUIT, 0};
78: long lseek();
79: int rcmd();
80: int dcmd();
81: int xcmd();
82: int tcmd();
83: int (*comfun)();
84: char flg[26];
85: char **namv;
86: int namc;
87: int file;
88:
89:
90: main(argc, argv)
91: char *argv[];
92: {
93: register char *cp;
94:
95: /* register i;
96: for(i=0; signum[i]; i++)
97: if(signal(signum[i], SIG_IGN) != SIG_IGN)
98: signal(signum[i], sigdone); */
99: if(argc < 2)
100: usage();
101: cp = argv[1];
102: for(cp = argv[1]; *cp; cp++)
103: switch(*cp) {
104: case 'm':
105: case 'v':
106: case 'u':
107: case 'w':
108: flg[*cp - 'a']++;
109: continue;
110: case 'c':
111: {
112: #define SURE "Are you sure you want to clobber the floppy?\n"
113: int tty;
114: char response[128];
115: tty = open("/dev/tty",2);
116: write(tty,SURE,sizeof(SURE));
117: read(tty,response,sizeof(response));
118: if(*response!='y')
119: exit(50);
120: flag('c')++;
121: close(tty);
122: }
123: dirdirty++;
124: continue;
125:
126: case 'r':
127: setcom(rcmd);
128: flag('r')++;
129: continue;
130:
131: case 'd':
132: setcom(dcmd);
133: flag('d')++;
134: continue;
135:
136: case 'x':
137: setcom(xcmd);
138: continue;
139:
140: case 't':
141: setcom(tcmd);
142: continue;
143:
144: case 'f':
145: defdev = argv[2];
146: argv++;
147: argc--;
148: continue;
149:
150:
151: default:
152: fprintf(stderr, "arff: bad option `%c'\n", *cp);
153: exit(1);
154: }
155: namv = argv+2;
156: namc = argc-2;
157: if(comfun == 0) {
158: if(flag('u') == 0) {
159: fprintf(stderr, "arff: one of [%s] must be specified\n", man);
160: exit(1);
161: }
162: setcom(rcmd);
163: }
164: (*comfun)();
165: exit(notfound());
166: }
167:
168: setcom(fun)
169: int (*fun)();
170: {
171:
172: if(comfun != 0) {
173: fprintf(stderr, "arff: only one of [%s] allowed\n", man);
174: exit(1);
175: }
176: comfun = fun;
177: }
178:
179: usage()
180: {
181:
182: fprintf(stderr, "usage: arff [%s][%s] archive files ...\n", opt, man);
183: exit(1);
184: }
185:
186: notfound()
187: {
188: register i, n;
189:
190: n = 0;
191: for(i=0; i<namc; i++)
192: if(namv[i]) {
193: fprintf(stderr, "arff: %s not found\n", namv[i]);
194: n++;
195: }
196: return(n);
197: }
198:
199: phserr()
200: {
201:
202: fprintf(stderr, "arff: phase error on %s\n", file);
203: }
204:
205: mesg(c, name)
206: char *name;
207: {
208:
209: if(flag('v'))
210: if(c != 'c' || flag('v') > 1)
211: printf("%c - %s\n", c, name);
212: }
213:
214: tcmd()
215: {
216: register char *de;
217: int segnum;
218: register char *last;
219: FLDOPE *lookup(), *dope;
220: int nleft; register i;
221: register struct rt_ent *rde;
222:
223: rt_init();
224: if(namc==0)
225: for (segnum=0; segnum >= 0; /* for all dir. segments */
226: segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
227: last = rt_last + segnum*2*RT_BLOCK;
228: for(de=((char *)&rt_dir[segnum])+10; de <= last;
229: de += rt_entsiz) {
230: if(rtls(rt(de))) {
231: nleft = (last - de) / rt_entsiz;
232: printf("\n%d entries remaining",nleft);
233: printf(" in directory segment %d.\n",segnum+1);
234: break;
235: }
236: }
237: }
238: else
239: for(i = 0; i < namc; i++) {
240: if(dope = lookup(namv[i])) {
241: rde = dope->rtdope;
242: rtls(rde);
243: namv[i] = 0;
244: }
245: }
246: }
247:
248: rtls(de)
249: register struct rt_ent *de;
250: {
251: int month,day,year;
252: char name[12], ext[4];
253:
254: if(flag('v'))
255: switch(de->rt_stat) {
256: case RT_TEMP:
257: printf("Tempfile:\n");
258: case RT_FILE:
259: unrad50(2,de->rt_name,name);
260: unrad50(1,&(de->rt_name[2]),ext);
261: day = de->rt_date.rt_dy;
262: year = de->rt_date.rt_yr + 72;
263: month = de->rt_date.rt_mo;
264: printf("%6.6s %3.3s %02d/%02d/%02d %d\n",name,
265: ext,month,day,year,de->rt_len);
266: break;
267:
268: case RT_NULL:
269: printf("%-25.9s %d\n","<UNUSED>",de->rt_len);
270: break;
271:
272: case RT_ESEG:
273: return(1);
274: }
275: else {
276: switch(de->rt_stat) {
277: case RT_TEMP:
278: case RT_FILE:
279: sunrad50(name,de->rt_name);
280: printf(name);putchar('\n');
281: break;
282:
283: case RT_ESEG:
284: return(1);
285:
286: case RT_NULL:
287: break;
288: }
289: }
290: return(0);
291: }
292: xcmd()
293: {
294: register char *de;
295: int segnum;
296: register char *last;
297: char name[12];
298: register int i;
299:
300: rt_init();
301: if(namc==0)
302: for (segnum=0; segnum >= 0; /* for all dir. segments */
303: segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
304: last = rt_last + segnum*2*RT_BLOCK;
305: for(de=((char *)&rt_dir[segnum])+10; de <= last;
306: de += rt_entsiz) {
307: sunrad50(name,rt(de)->rt_name);
308: rtx(name);
309: }
310: }
311: else
312: for(i = 0; i < namc; i++)
313: if(rtx(namv[i])==0) namv[i] = 0;
314: }
315: rtx(name)
316: char *name;
317: {
318: register FLDOPE *dope;
319: FLDOPE *lookup();
320: register startad, count;
321: int file; char buff[RT_BLOCK];
322:
323:
324: if(dope = lookup(name)) {
325: mesg('x', name);
326: file = creat(name, 0666);
327: if(file < 0) return(1);
328: count = dope->count;
329: startad = dope->startad;
330: for( ; count > 0 ; count -= RT_BLOCK) {
331: lread(startad,RT_BLOCK,buff);
332: write(file,buff,RT_BLOCK);
333: startad += RT_BLOCK;
334: }
335: close(file);
336: return(0);
337: }
338: return(1);
339: }
340: rt_init()
341: {
342: static initized = 0;
343: register char *de;
344: register i;
345: int dirnum;
346: char *mode;
347: register char *last;
348: FILE *temp_floppydes;
349:
350: if(initized) return;
351: initized = 1;
352: if(flag('c') || flag('d') || flag('r'))
353: mode = "r+";
354: else
355: mode = "r";
356: if((temp_floppydes = fopen(defdev, mode)) == NULL) {
357: perror(defdev);
358: exit(1);
359: }
360: floppydes = fileno(temp_floppydes);
361: if(flag('c')==0) {
362: lread(6*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[0]);
363: dirnum = rt_dir[0].rt_axhead.rt_numseg;
364: if (dirnum > RT_DIRSIZE) {
365: fprintf(stderr,"arff: too many directory segments\n");
366: exit(1);
367: }
368: for (i=1; i<dirnum; i++)
369: lread((6+2*i)*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[i]);
370: } else
371: dirnum = 1;
372:
373: rt_entsiz = 2*rt_dir[0].rt_axhead.rt_entpad + 14;
374: rt_entsiz = 14; /* assume rt_entpad = 0 ??? */
375: rt_last = ((char *) &rt_dir[0]) + 10 + 1014/rt_entsiz*rt_entsiz;
376: rt_nleft = 0;
377:
378: for (i=0; i<dirnum; i++) {
379: if (rt_dir[i].rt_axhead.rt_nxtseg >= RT_DIRSIZE
380: || rt_dir[i].rt_axhead.rt_lstseg >= RT_DIRSIZE) {
381: fprintf(stderr, "arff: awful directory linkage\n");
382: exit(1);
383: }
384: last = rt_last + i*2*RT_BLOCK;
385: for(de=((char *)&rt_dir[i])+10; de <= last; de += rt_entsiz) {
386: if(rt(de)->rt_stat==RT_ESEG) break;
387: }
388: rt_curend[i] = rt(de);
389: rt_nleft += (last - de) / rt_entsiz;
390: }
391: }
392:
393: static FLDOPE result;
394: FLDOPE *
395: lookup(name)
396: char * name;
397: {
398: unsigned short rname[3];
399: register char *de;
400: int segnum;
401: register char *last;
402: register index;
403:
404: srad50(name,rname);
405:
406: /*
407: * Search for name, accumulate blocks in index
408: */
409: rt_init();
410: for (segnum=0; segnum >= 0; /* for all dir. segments */
411: segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
412: index = 0;
413: last = rt_last + segnum*2*RT_BLOCK;
414: for(de=((char *)&rt_dir[segnum])+10;
415: rt(de)->rt_stat != RT_ESEG; de += rt_entsiz) {
416: switch(rt(de)->rt_stat) {
417: case RT_FILE:
418: case RT_TEMP:
419: if(samename(rname,rt(de)->rt_name))
420: goto found;
421: case RT_NULL:
422: index += rt(de)->rt_len;
423: }
424: }
425: }
426: return((FLDOPE *) 0);
427: found: result.count = rt(de)->rt_len * RT_BLOCK;
428: result.startad = RT_BLOCK * (rt_dir[segnum].rt_axhead.rt_stfile + index);
429: result.rtdope = (struct rt_ent *) de;
430: return(&result);
431: }
432: static
433: samename(a,b)
434: unsigned short a[3],b[3];
435: {
436: return( a[0]==b[0] && a[1]==b[1] && a[2]==b[2] );
437: }
438:
439:
440: rad50(cp,out)
441: register unsigned char *cp;
442: unsigned short *out;
443: {
444: register index;
445: register temp;
446:
447: for(index = 0;*cp; index++) {
448:
449: temp = Ain1 * table[*cp++];
450: if(*cp!=0) {
451: temp += Ain2 * table[*cp++];
452:
453: if(*cp!=0)
454: temp += table[*cp++];
455: }
456:
457: out[index] = temp;
458: }
459: }
460: #define reduce(x,p,q) \
461: (x = v[p/q], p %= q);
462:
463: unrad50(count,in,cp)
464: unsigned short *in;
465: register char *cp;
466: {
467: register i, temp; register unsigned char *v = (unsigned char *) val;
468:
469: for(i = 0; i < count; i++) {
470: temp = in[i];
471:
472: reduce (*cp++,temp,Ain1);
473: reduce (*cp++,temp,Ain2);
474: reduce (*cp++,temp,1);
475: }
476: *cp=0;
477: }
478:
479: srad50(name,rname)
480: register char * name;
481: register unsigned short *rname;
482: {
483: register index; register char *cp;
484: char file[7],ext[4];
485: /*
486: * Find end of pathname
487: */
488: for(cp = name; *cp++; );
489: while(cp >= name && *--cp != '/');
490: cp++;
491: /*
492: * Change to rad50
493: *
494: */
495: for(index = 0; *cp; ){
496: file[index++] = *cp++;
497: if(*cp=='.') {
498: cp++;
499: break;
500: }
501: if(index>=6) {
502: break;
503: }
504: }
505: file[index] = 0;
506: for(index = 0; *cp; ){
507: ext[index++] = *cp++;
508: if(*cp=='.' || index>=3) {
509: break;
510: }
511: }
512: ext[index]=0;
513: rname[0] = 0;
514: rname[1] = 0;
515: rname[2] = 0;
516: rad50((unsigned char *)file,rname);
517: rad50((unsigned char *)ext,rname+2);
518: }
519: sunrad50(name,rname)
520: unsigned short rname[3];
521: register char *name;
522: {
523: register char *cp, *cp2;
524: char ext[4];
525:
526: unrad50(2,rname,name);
527: unrad50(1,rname + 2,ext);
528: /* Jam name and extension together with a dot
529: deleting white space */
530: for(cp = name; *cp++;);--cp; while(*--cp==' ' && cp>=name);
531: *++cp = '.';cp++;
532: for(cp2=ext; *cp2!=' ' && cp2 < ext + 3;) {
533: *cp++ = *cp2++;
534: }
535: *cp=0;
536: if(cp[-1]=='.') cp[-1] = 0;
537: }
538:
539: static char *oval = " ABCDEFGHIJKLMNOPQRSTUVWXYZ$.@0123456789";
540: static char *val = " abcdefghijklmnopqrstuvwxyz$.@0123456789";
541: static char table[256] = {
542: 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
543: 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
544: 0, 29, 29, 29, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 28, 29,
545: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 29, 29, 29, 29, 29, 29,
546: 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
547: 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29,
548: 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
549: 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29,
550: 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
551: 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
552: 0, 29, 29, 29, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 28, 29,
553: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 29, 29, 29, 29, 29, 29,
554: 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
555: 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29,
556: 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
557: 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29 };
558:
559: long
560: trans(logical)
561: register int logical;
562: {
563: /* Logical to physical adress translation */
564: register int sector, bytes, track;
565:
566: logical += 26 * 128;
567: bytes = (logical & 127);
568: logical >>= 7;
569: sector = logical % 26;
570: if(sector >= 13)
571: sector = sector *2 +1;
572: else
573: sector *= 2;
574: sector += 26 + ((track = (logical / 26)) - 1) * 6;
575: sector %= 26;
576: return( (((track *26) + sector) << 7) + bytes);
577: }
578: lread(startad,count,obuff)
579: register startad, count;
580: register char * obuff;
581: {
582: long trans();
583: extern floppydes;
584: int chunk;
585:
586: rt_init();
587: if(flag('m')==0)
588: chunk = FL_BLOCK;
589: else
590: chunk = RT_BLOCK;
591: for (; count > 0; count -= chunk, obuff += chunk, startad += chunk) {
592: lseek(floppydes,
593: (long) (flag('m') ? startad : trans(startad)), 0);
594: if (read(floppydes, obuff, chunk) != chunk)
595: fprintf(stderr, "arff: read error, block %d\n", startad / RT_BLOCK);
596: }
597: }
598:
599: lwrite(startad,count,obuff)
600: register startad, count;
601: register char * obuff;
602: {
603: long trans();
604: extern floppydes;
605: int chunk;
606:
607: rt_init();
608: if(flag('m')==0)
609: chunk = FL_BLOCK;
610: else
611: chunk = RT_BLOCK;
612: for (; count > 0; count -= chunk, obuff += chunk, startad += chunk) {
613: lseek(floppydes,
614: (long) (flag('m') ? startad : trans(startad)), 0);
615: if (write(floppydes, obuff, chunk) != chunk)
616: fprintf(stderr, "arff: write error, block %d\n", startad / RT_BLOCK);
617: }
618: }
619:
620: rcmd()
621: {
622: register int i;
623:
624: rt_init();
625: if (namc>0)
626: for(i = 0; i < namc; i++)
627: if(rtr(namv[i])==0) namv[i]=0;
628: }
629:
630: rtr(name)
631: char *name;
632: {
633: register FLDOPE *dope;
634: struct stat buf;
635: FLDOPE *flcreat();
636:
637: if(stat(name,&buf)<0) {
638: perror(name);
639: return (-1);
640: }
641: if ((dope = flcreat(name, buf.st_size, buf.st_mtime)) == NULL)
642: return (-1);
643: mesg('r', name);
644: toflop(name, buf.st_size, dope);
645: return (0);
646: }
647:
648: FLDOPE *
649: flcreat(name, size, mtime)
650: char *name;
651: long size;
652: time_t mtime;
653: {
654: register FLDOPE *dope;
655: register struct rt_ent *de;
656: int segnum;
657:
658: if ((dope = lookup(name)) != NULL
659: && size <= dope->rtdope->rt_len * RT_BLOCK)
660: return (dope);
661: for (segnum=0; segnum != -1; segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
662: for(de = rt_dir[segnum].rt_ents; de->rt_stat != RT_ESEG; de++)
663: if (de->rt_stat == RT_NULL
664: && size <= de->rt_len * RT_BLOCK) {
665: if (dope)
666: delete(dope);
667: mkent(de, segnum, size, name, mtime);
668: goto found;
669: }
670: }
671: printf("%s: no slot or no space for file\n", name);
672: return (NULL);
673: found:
674: if (dope = lookup(name))
675: return (dope);
676: fprintf(stderr, "%s: internal error, added then not found\n", name);
677: return (NULL);
678: }
679:
680: mkent(de,segnum,size,name,mtime)
681: register struct rt_ent *de;
682: int segnum;
683: long size;
684: char *name;
685: time_t mtime;
686: {
687: struct tm *localtime(); register struct tm *timp;
688: register struct rt_ent *workp; int count;
689:
690: count = (((size - 1)/RT_BLOCK) + 1);
691: /* Make sure there is room */
692: if(de->rt_len==count)
693: goto overwrite;
694: if(rt_curend[segnum] == (rt_last + (segnum*2*RT_BLOCK))) {
695: /* no entries left on segment */
696: if(flag('o'))
697: goto overwrite;
698: fprintf(stderr,"Directory segment #%d full on %s\n",segnum+1,
699: defdev);
700: exit(1);
701: }
702: /* copy directory entries up */
703: for(workp = rt_curend[segnum]+1; workp > de; workp--)
704: *workp = workp[-1];
705: de[1].rt_len -= count;
706: de->rt_len = count;
707: rt_curend[segnum]++;
708: rt_nleft--;
709: overwrite:
710: srad50(name,de->rt_name);
711: timp = localtime(&mtime);
712: de->rt_date.rt_dy = timp->tm_mday + 1;
713: de->rt_date.rt_mo = timp->tm_mon + 1;
714: de->rt_date.rt_yr = timp->tm_year - 72;
715: de->rt_stat = RT_FILE;
716: de->rt_pad = 0;
717: de->rt_chan = 0;
718: de->rt_job = 0;
719: lwrite((6+segnum*2)*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[segnum]);
720: }
721:
722: toflop(name,ocount,dope)
723: char *name;
724: register FLDOPE *dope;
725: long ocount;
726: {
727: register file, n, startad = dope->startad, count = ocount;
728: char buff[RT_BLOCK];
729:
730: file = open(name,0);
731: if(file < 0) {
732: fprintf(stderr, "arff: couldn't open %s\n",name);exit(1);}
733: for( ; count >= RT_BLOCK; count -= RT_BLOCK) {
734: read(file,buff,RT_BLOCK);
735: lwrite(startad,RT_BLOCK,buff);
736: startad += RT_BLOCK;
737: }
738: read(file,buff,count);
739: close(file);
740: if(count <= 0) return;
741: for(n = count; n < RT_BLOCK; n ++) buff[n] = 0;
742: lwrite(startad,RT_BLOCK,buff);
743: count = (dope->rtdope->rt_len * RT_BLOCK - ocount) / RT_BLOCK ;
744: if(count <= 0) return;
745: for( ; count > 0 ; count--) {
746: startad += RT_BLOCK;
747: lwrite(startad,RT_BLOCK,zeroes);
748: }
749: }
750: dcmd()
751: {
752: register int i;
753:
754: rt_init();
755: if(namc)
756: for(i = 0; i < namc; i++)
757: if(rtk(namv[i])==0) namv[i]=0;
758: if(dirdirty)
759: scrunch();
760:
761: }
762: rtk(name)
763: char *name;
764: {
765: FLDOPE *dope;
766: register struct rt_ent *de;
767: FLDOPE *lookup();
768:
769: if(dope = lookup(name)) {
770: mesg('d', name);
771: delete(dope);
772: return(0);
773: }
774: return(1);
775: }
776:
777: delete(dope)
778: FLDOPE *dope;
779: {
780: register struct rt_ent *de;
781:
782: de = dope->rtdope;
783: de->rt_stat = RT_NULL;
784: de->rt_name[0] = 0;
785: de->rt_name[1] = 0;
786: de->rt_name[2] = 0;
787: * ((unsigned short *) & (de->rt_date)) = 0;
788: dirdirty = 1;
789: }
790:
791: scrunch() {
792: register struct rt_ent *de , *workp;
793: register segnum;
794: for (segnum=0; segnum != -1; /* for all dir. segments */
795: segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
796: dirdirty = 0;
797: for(de = rt_dir[segnum].rt_ents; de <= rt_curend[segnum]; de++) {
798: if(de->rt_stat==RT_NULL && de[1].rt_stat==RT_NULL) {
799: (de+1)->rt_len += de->rt_len;
800: for(workp = de; workp < rt_curend[segnum]; workp++)
801: *workp = workp[1];
802: de--;
803: rt_curend[segnum]--;
804: rt_nleft++;
805: dirdirty = 1;
806: }
807: }
808: if (dirdirty)
809: lwrite((6+segnum*2)*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[segnum]);
810: }
811: }
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