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1.1 ! root 1: static char *sccsid = "@(#)find.c 4.1 (Berkeley) 10/1/80"; ! 2: /* find COMPILE: cc -o find -s -O -i find.c -lS */ ! 3: #include <stdio.h> ! 4: #include <sys/types.h> ! 5: #include <sys/dir.h> ! 6: #include <sys/stat.h> ! 7: #define A_DAY 86400L /* a day full of seconds */ ! 8: #define EQ(x, y) (strcmp(x, y)==0) ! 9: ! 10: int Randlast; ! 11: char Pathname[200]; ! 12: ! 13: struct anode { ! 14: int (*F)(); ! 15: struct anode *L, *R; ! 16: } Node[100]; ! 17: int Nn; /* number of nodes */ ! 18: char *Fname; ! 19: long Now; ! 20: int Argc, ! 21: Ai, ! 22: Pi; ! 23: char **Argv; ! 24: /* cpio stuff */ ! 25: int Cpio; ! 26: short *Buf, *Dbuf, *Wp; ! 27: int Bufsize = 5120; ! 28: int Wct = 2560; ! 29: ! 30: long Newer; ! 31: ! 32: struct stat Statb; ! 33: ! 34: struct anode *exp(), ! 35: *e1(), ! 36: *e2(), ! 37: *e3(), ! 38: *mk(); ! 39: char *nxtarg(); ! 40: char Home[128]; ! 41: long Blocks; ! 42: char *rindex(); ! 43: char *sbrk(); ! 44: main(argc, argv) char *argv[]; ! 45: { ! 46: struct anode *exlist; ! 47: int paths; ! 48: register char *cp, *sp = 0; ! 49: FILE *pwd, *popen(); ! 50: ! 51: time(&Now); ! 52: pwd = popen("pwd", "r"); ! 53: fgets(Home, 128, pwd); ! 54: pclose(pwd); ! 55: Home[strlen(Home) - 1] = '\0'; ! 56: Argc = argc; Argv = argv; ! 57: if(argc<3) { ! 58: usage: fprintf(stderr, "Usage: find path-list predicate-list\n"); ! 59: exit(1); ! 60: } ! 61: for(Ai = paths = 1; Ai < (argc-1); ++Ai, ++paths) ! 62: if(*Argv[Ai] == '-' || EQ(Argv[Ai], "(") || EQ(Argv[Ai], "!")) ! 63: break; ! 64: if(paths == 1) /* no path-list */ ! 65: goto usage; ! 66: if(!(exlist = exp())) { /* parse and compile the arguments */ ! 67: fprintf(stderr, "find: parsing error\n"); ! 68: exit(1); ! 69: } ! 70: if(Ai<argc) { ! 71: fprintf(stderr, "find: missing conjunction\n"); ! 72: exit(1); ! 73: } ! 74: for(Pi = 1; Pi < paths; ++Pi) { ! 75: sp = 0; ! 76: chdir(Home); ! 77: strcpy(Pathname, Argv[Pi]); ! 78: if(cp = rindex(Pathname, '/')) { ! 79: sp = cp + 1; ! 80: *cp = '\0'; ! 81: if(chdir(*Pathname? Pathname: "/") == -1) { ! 82: fprintf(stderr, "find: bad starting directory\n"); ! 83: exit(2); ! 84: } ! 85: *cp = '/'; ! 86: } ! 87: Fname = sp? sp: Pathname; ! 88: descend(Pathname, Fname, exlist); /* to find files that match */ ! 89: } ! 90: if(Cpio) { ! 91: strcpy(Pathname, "TRAILER!!!"); ! 92: Statb.st_size = 0; ! 93: cpio(); ! 94: printf("%D blocks\n", Blocks*10); ! 95: } ! 96: exit(0); ! 97: } ! 98: ! 99: /* compile time functions: priority is exp()<e1()<e2()<e3() */ ! 100: ! 101: struct anode *exp() { /* parse ALTERNATION (-o) */ ! 102: int or(); ! 103: register struct anode * p1; ! 104: ! 105: p1 = e1() /* get left operand */ ; ! 106: if(EQ(nxtarg(), "-o")) { ! 107: Randlast--; ! 108: return(mk(or, p1, exp())); ! 109: } ! 110: else if(Ai <= Argc) --Ai; ! 111: return(p1); ! 112: } ! 113: struct anode *e1() { /* parse CONCATENATION (formerly -a) */ ! 114: int and(); ! 115: register struct anode * p1; ! 116: register char *a; ! 117: ! 118: p1 = e2(); ! 119: a = nxtarg(); ! 120: if(EQ(a, "-a")) { ! 121: And: ! 122: Randlast--; ! 123: return(mk(and, p1, e1())); ! 124: } else if(EQ(a, "(") || EQ(a, "!") || (*a=='-' && !EQ(a, "-o"))) { ! 125: --Ai; ! 126: goto And; ! 127: } else if(Ai <= Argc) --Ai; ! 128: return(p1); ! 129: } ! 130: struct anode *e2() { /* parse NOT (!) */ ! 131: int not(); ! 132: ! 133: if(Randlast) { ! 134: fprintf(stderr, "find: operand follows operand\n"); ! 135: exit(1); ! 136: } ! 137: Randlast++; ! 138: if(EQ(nxtarg(), "!")) ! 139: return(mk(not, e3(), (struct anode *)0)); ! 140: else if(Ai <= Argc) --Ai; ! 141: return(e3()); ! 142: } ! 143: struct anode *e3() { /* parse parens and predicates */ ! 144: int exeq(), ok(), glob(), mtime(), atime(), user(), ! 145: group(), size(), perm(), links(), print(), ! 146: type(), ino(), cpio(), newer(); ! 147: struct anode *p1; ! 148: int i; ! 149: register char *a, *b, s; ! 150: ! 151: a = nxtarg(); ! 152: if(EQ(a, "(")) { ! 153: Randlast--; ! 154: p1 = exp(); ! 155: a = nxtarg(); ! 156: if(!EQ(a, ")")) goto err; ! 157: return(p1); ! 158: } ! 159: else if(EQ(a, "-print")) { ! 160: return(mk(print, (struct anode *)0, (struct anode *)0)); ! 161: } ! 162: b = nxtarg(); ! 163: s = *b; ! 164: if(s=='+') b++; ! 165: if(EQ(a, "-name")) ! 166: return(mk(glob, (struct anode *)b, (struct anode *)0)); ! 167: else if(EQ(a, "-mtime")) ! 168: return(mk(mtime, (struct anode *)atoi(b), (struct anode *)s)); ! 169: else if(EQ(a, "-atime")) ! 170: return(mk(atime, (struct anode *)atoi(b), (struct anode *)s)); ! 171: else if(EQ(a, "-user")) { ! 172: if((i=getunum("/etc/passwd", b)) == -1) { ! 173: if(gmatch(b, "[0-9][0-9]*")) ! 174: return mk(user, (struct anode *)atoi(b), (struct anode *)s); ! 175: fprintf(stderr, "find: cannot find -user name\n"); ! 176: exit(1); ! 177: } ! 178: return(mk(user, (struct anode *)i, (struct anode *)s)); ! 179: } ! 180: else if(EQ(a, "-inum")) ! 181: return(mk(ino, (struct anode *)atoi(b), (struct anode *)s)); ! 182: else if(EQ(a, "-group")) { ! 183: if((i=getunum("/etc/group", b)) == -1) { ! 184: if(gmatch(b, "[0-9][0-9]*")) ! 185: return mk(group, (struct anode *)atoi(b), (struct anode *)s); ! 186: fprintf(stderr, "find: cannot find -group name\n"); ! 187: exit(1); ! 188: } ! 189: return(mk(group, (struct anode *)i, (struct anode *)s)); ! 190: } else if(EQ(a, "-size")) ! 191: return(mk(size, (struct anode *)atoi(b), (struct anode *)s)); ! 192: else if(EQ(a, "-links")) ! 193: return(mk(links, (struct anode *)atoi(b), (struct anode *)s)); ! 194: else if(EQ(a, "-perm")) { ! 195: for(i=0; *b ; ++b) { ! 196: if(*b=='-') continue; ! 197: i <<= 3; ! 198: i = i + (*b - '0'); ! 199: } ! 200: return(mk(perm, (struct anode *)i, (struct anode *)s)); ! 201: } ! 202: else if(EQ(a, "-type")) { ! 203: i = s=='d' ? S_IFDIR : ! 204: s=='b' ? S_IFBLK : ! 205: s=='c' ? S_IFCHR : ! 206: s=='f' ? 0100000 : ! 207: 0; ! 208: return(mk(type, (struct anode *)i, (struct anode *)0)); ! 209: } ! 210: else if (EQ(a, "-exec")) { ! 211: i = Ai - 1; ! 212: while(!EQ(nxtarg(), ";")); ! 213: return(mk(exeq, (struct anode *)i, (struct anode *)0)); ! 214: } ! 215: else if (EQ(a, "-ok")) { ! 216: i = Ai - 1; ! 217: while(!EQ(nxtarg(), ";")); ! 218: return(mk(ok, (struct anode *)i, (struct anode *)0)); ! 219: } ! 220: else if(EQ(a, "-cpio")) { ! 221: if((Cpio = creat(b, 0666)) < 0) { ! 222: fprintf(stderr, "find: cannot create < %s >\n", s); ! 223: exit(1); ! 224: } ! 225: Buf = (short *)sbrk(512); ! 226: Wp = Dbuf = (short *)sbrk(5120); ! 227: return(mk(cpio, (struct anode *)0, (struct anode *)0)); ! 228: } ! 229: else if(EQ(a, "-newer")) { ! 230: if(stat(b, &Statb) < 0) { ! 231: fprintf(stderr, "find: cannot access < %s >\n", b); ! 232: exit(1); ! 233: } ! 234: Newer = Statb.st_mtime; ! 235: return mk(newer, (struct anode *)0, (struct anode *)0); ! 236: } ! 237: err: fprintf(stderr, "find: bad option < %s >\n", a); ! 238: exit(1); ! 239: } ! 240: struct anode *mk(f, l, r) ! 241: int (*f)(); ! 242: struct anode *l, *r; ! 243: { ! 244: Node[Nn].F = f; ! 245: Node[Nn].L = l; ! 246: Node[Nn].R = r; ! 247: return(&(Node[Nn++])); ! 248: } ! 249: ! 250: char *nxtarg() { /* get next arg from command line */ ! 251: static strikes = 0; ! 252: ! 253: if(strikes==3) { ! 254: fprintf(stderr, "find: incomplete statement\n"); ! 255: exit(1); ! 256: } ! 257: if(Ai>=Argc) { ! 258: strikes++; ! 259: Ai = Argc + 1; ! 260: return(""); ! 261: } ! 262: return(Argv[Ai++]); ! 263: } ! 264: ! 265: /* execution time functions */ ! 266: and(p) ! 267: register struct anode *p; ! 268: { ! 269: return(((*p->L->F)(p->L)) && ((*p->R->F)(p->R))?1:0); ! 270: } ! 271: or(p) ! 272: register struct anode *p; ! 273: { ! 274: return(((*p->L->F)(p->L)) || ((*p->R->F)(p->R))?1:0); ! 275: } ! 276: not(p) ! 277: register struct anode *p; ! 278: { ! 279: return( !((*p->L->F)(p->L))); ! 280: } ! 281: glob(p) ! 282: register struct { int f; char *pat; } *p; ! 283: { ! 284: return(gmatch(Fname, p->pat)); ! 285: } ! 286: print() ! 287: { ! 288: puts(Pathname); ! 289: return(1); ! 290: } ! 291: mtime(p) ! 292: register struct { int f, t, s; } *p; ! 293: { ! 294: return(scomp((int)((Now - Statb.st_mtime) / A_DAY), p->t, p->s)); ! 295: } ! 296: atime(p) ! 297: register struct { int f, t, s; } *p; ! 298: { ! 299: return(scomp((int)((Now - Statb.st_atime) / A_DAY), p->t, p->s)); ! 300: } ! 301: user(p) ! 302: register struct { int f, u, s; } *p; ! 303: { ! 304: return(scomp(Statb.st_uid, p->u, p->s)); ! 305: } ! 306: ino(p) ! 307: register struct { int f, u, s; } *p; ! 308: { ! 309: return(scomp((int)Statb.st_ino, p->u, p->s)); ! 310: } ! 311: group(p) ! 312: register struct { int f, u; } *p; ! 313: { ! 314: return(p->u == Statb.st_gid); ! 315: } ! 316: links(p) ! 317: register struct { int f, link, s; } *p; ! 318: { ! 319: return(scomp(Statb.st_nlink, p->link, p->s)); ! 320: } ! 321: size(p) ! 322: register struct { int f, sz, s; } *p; ! 323: { ! 324: return(scomp((int)((Statb.st_size+511)>>9), p->sz, p->s)); ! 325: } ! 326: perm(p) ! 327: register struct { int f, per, s; } *p; ! 328: { ! 329: register i; ! 330: i = (p->s=='-') ? p->per : 07777; /* '-' means only arg bits */ ! 331: return((Statb.st_mode & i & 07777) == p->per); ! 332: } ! 333: type(p) ! 334: register struct { int f, per, s; } *p; ! 335: { ! 336: return((Statb.st_mode&S_IFMT)==p->per); ! 337: } ! 338: exeq(p) ! 339: register struct { int f, com; } *p; ! 340: { ! 341: fflush(stdout); /* to flush possible `-print' */ ! 342: return(doex(p->com)); ! 343: } ! 344: ok(p) ! 345: struct { int f, com; } *p; ! 346: { ! 347: char c; int yes; ! 348: yes = 0; ! 349: fflush(stdout); /* to flush possible `-print' */ ! 350: fprintf(stderr, "< %s ... %s > ? ", Argv[p->com], Pathname); ! 351: fflush(stderr); ! 352: if((c=getchar())=='y') yes = 1; ! 353: while(c!='\n') c = getchar(); ! 354: if(yes) return(doex(p->com)); ! 355: return(0); ! 356: } ! 357: ! 358: #define MKSHORT(v, lv) {U.l=1L;if(U.c[0]) U.l=lv, v[0]=U.s[1], v[1]=U.s[0]; else U.l=lv, v[0]=U.s[0], v[1]=U.s[1];} ! 359: union { long l; short s[2]; char c[4]; } U; ! 360: long mklong(v) ! 361: short v[]; ! 362: { ! 363: U.l = 1; ! 364: if(U.c[0] /* VAX */) ! 365: U.s[0] = v[1], U.s[1] = v[0]; ! 366: else ! 367: U.s[0] = v[0], U.s[1] = v[1]; ! 368: return U.l; ! 369: } ! 370: cpio() ! 371: { ! 372: #define MAGIC 070707 ! 373: struct header { ! 374: short h_magic, ! 375: h_dev, ! 376: h_ino, ! 377: h_mode, ! 378: h_uid, ! 379: h_gid, ! 380: h_nlink, ! 381: h_rdev; ! 382: short h_mtime[2]; ! 383: short h_namesize; ! 384: short h_filesize[2]; ! 385: char h_name[256]; ! 386: } hdr; ! 387: register ifile, ct; ! 388: static long fsz; ! 389: register i; ! 390: ! 391: hdr.h_magic = MAGIC; ! 392: strcpy(hdr.h_name, !strncmp(Pathname, "./", 2)? Pathname+2: Pathname); ! 393: hdr.h_namesize = strlen(hdr.h_name) + 1; ! 394: hdr.h_uid = Statb.st_uid; ! 395: hdr.h_gid = Statb.st_gid; ! 396: hdr.h_dev = Statb.st_dev; ! 397: hdr.h_ino = Statb.st_ino; ! 398: hdr.h_mode = Statb.st_mode; ! 399: MKSHORT(hdr.h_mtime, Statb.st_mtime); ! 400: hdr.h_nlink = Statb.st_nlink; ! 401: fsz = hdr.h_mode & S_IFREG? Statb.st_size: 0L; ! 402: MKSHORT(hdr.h_filesize, fsz); ! 403: hdr.h_rdev = Statb.st_rdev; ! 404: if(EQ(hdr.h_name, "TRAILER!!!")) { ! 405: bwrite((short *)&hdr, (sizeof hdr-256)+hdr.h_namesize); ! 406: for(i = 0; i < 10; ++i) ! 407: bwrite(Buf, 512); ! 408: return; ! 409: } ! 410: if(!mklong(hdr.h_filesize)) ! 411: return; ! 412: if((ifile = open(Fname, 0)) < 0) { ! 413: cerror: ! 414: fprintf(stderr, "find: cannot copy < %s >\n", hdr.h_name); ! 415: return; ! 416: } ! 417: bwrite((short *)&hdr, (sizeof hdr-256)+hdr.h_namesize); ! 418: for(fsz = mklong(hdr.h_filesize); fsz > 0; fsz -= 512) { ! 419: ct = fsz>512? 512: fsz; ! 420: if(read(ifile, (char *)Buf, ct) < 0) ! 421: goto cerror; ! 422: bwrite(Buf, ct); ! 423: } ! 424: close(ifile); ! 425: return; ! 426: } ! 427: newer() ! 428: { ! 429: return Statb.st_mtime > Newer; ! 430: } ! 431: ! 432: /* support functions */ ! 433: scomp(a, b, s) /* funny signed compare */ ! 434: register a, b; ! 435: register char s; ! 436: { ! 437: if(s == '+') ! 438: return(a > b); ! 439: if(s == '-') ! 440: return(a < (b * -1)); ! 441: return(a == b); ! 442: } ! 443: ! 444: doex(com) ! 445: { ! 446: register np; ! 447: register char *na; ! 448: static char *nargv[50]; ! 449: static ccode; ! 450: ! 451: ccode = np = 0; ! 452: while (na=Argv[com++]) { ! 453: if(strcmp(na, ";")==0) break; ! 454: if(strcmp(na, "{}")==0) nargv[np++] = Pathname; ! 455: else nargv[np++] = na; ! 456: } ! 457: nargv[np] = 0; ! 458: if (np==0) return(9); ! 459: if(fork()) /*parent*/ wait(&ccode); ! 460: else { /*child*/ ! 461: chdir(Home); ! 462: execvp(nargv[0], nargv, np); ! 463: exit(1); ! 464: } ! 465: return(ccode ? 0:1); ! 466: } ! 467: ! 468: getunum(f, s) char *f, *s; { /* find user/group name and return number */ ! 469: register i; ! 470: register char *sp; ! 471: register c; ! 472: char str[20]; ! 473: FILE *pin; ! 474: ! 475: i = -1; ! 476: pin = fopen(f, "r"); ! 477: c = '\n'; /* prime with a CR */ ! 478: do { ! 479: if(c=='\n') { ! 480: sp = str; ! 481: while((c = *sp++ = getc(pin)) != ':') ! 482: if(c == EOF) goto RET; ! 483: *--sp = '\0'; ! 484: if(EQ(str, s)) { ! 485: while((c=getc(pin)) != ':') ! 486: if(c == EOF) goto RET; ! 487: sp = str; ! 488: while((*sp = getc(pin)) != ':') sp++; ! 489: *sp = '\0'; ! 490: i = atoi(str); ! 491: goto RET; ! 492: } ! 493: } ! 494: } while((c = getc(pin)) != EOF); ! 495: RET: ! 496: fclose(pin); ! 497: return(i); ! 498: } ! 499: ! 500: descend(name, fname, exlist) ! 501: struct anode *exlist; ! 502: char *name, *fname; ! 503: { ! 504: int dir = 0, /* open directory */ ! 505: offset, ! 506: dsize, ! 507: entries, ! 508: dirsize; ! 509: struct direct dentry[BUFSIZ / sizeof (struct direct)]; ! 510: register struct direct *dp; ! 511: register char *c1, *c2; ! 512: int i; ! 513: int rv = 0; ! 514: char *endofname; ! 515: ! 516: if(stat(fname, &Statb)<0) { ! 517: fprintf(stderr, "find: bad status < %s >\n", name); ! 518: return(0); ! 519: } ! 520: (*exlist->F)(exlist); ! 521: if((Statb.st_mode&S_IFMT)!=S_IFDIR) ! 522: return(1); ! 523: ! 524: for(c1 = name; *c1; ++c1); ! 525: if(*(c1-1) == '/') ! 526: --c1; ! 527: endofname = c1; ! 528: dirsize = Statb.st_size; ! 529: ! 530: if(chdir(fname) == -1) ! 531: return(0); ! 532: for(offset=0 ; offset < dirsize ; offset += BUFSIZ) { /* each block */ ! 533: dsize = BUFSIZ<(dirsize-offset)? BUFSIZ: (dirsize-offset); ! 534: if(!dir) { ! 535: if((dir=open(".", 0))<0) { ! 536: fprintf(stderr, "find: cannot open < %s >\n", ! 537: name); ! 538: rv = 0; ! 539: goto ret; ! 540: } ! 541: if(offset) lseek(dir, (long)offset, 0); ! 542: if(read(dir, (char *)dentry, dsize)<0) { ! 543: fprintf(stderr, "find: cannot read < %s >\n", ! 544: name); ! 545: rv = 0; ! 546: goto ret; ! 547: } ! 548: if(dir > 10) { ! 549: close(dir); ! 550: dir = 0; ! 551: } ! 552: } else ! 553: if(read(dir, (char *)dentry, dsize)<0) { ! 554: fprintf(stderr, "find: cannot read < %s >\n", ! 555: name); ! 556: rv = 0; ! 557: goto ret; ! 558: } ! 559: for(dp=dentry, entries=dsize>>4; entries; --entries, ++dp) { /* each directory entry */ ! 560: if(dp->d_ino==0 ! 561: || (dp->d_name[0]=='.' && dp->d_name[1]=='\0') ! 562: || (dp->d_name[0]=='.' && dp->d_name[1]=='.' && dp->d_name[2]=='\0')) ! 563: continue; ! 564: c1 = endofname; ! 565: *c1++ = '/'; ! 566: c2 = dp->d_name; ! 567: for(i=0; i<14; ++i) ! 568: if(*c2) ! 569: *c1++ = *c2++; ! 570: else ! 571: break; ! 572: *c1 = '\0'; ! 573: if(c1 == endofname) { /* ?? */ ! 574: rv = 0; ! 575: goto ret; ! 576: } ! 577: Fname = endofname+1; ! 578: if(!descend(name, Fname, exlist)) { ! 579: *endofname = '\0'; ! 580: chdir(Home); ! 581: if(chdir(Pathname) == -1) { ! 582: fprintf(stderr, "find: bad directory tree\n"); ! 583: exit(1); ! 584: } ! 585: } ! 586: } ! 587: } ! 588: rv = 1; ! 589: ret: ! 590: if(dir) ! 591: close(dir); ! 592: if(chdir("..") == -1) { ! 593: *endofname = '\0'; ! 594: fprintf(stderr, "find: bad directory <%s>\n", name); ! 595: rv = 1; ! 596: } ! 597: return(rv); ! 598: } ! 599: ! 600: gmatch(s, p) /* string match as in glob */ ! 601: register char *s, *p; ! 602: { ! 603: if (*s=='.' && *p!='.') return(0); ! 604: return amatch(s, p); ! 605: } ! 606: ! 607: amatch(s, p) ! 608: register char *s, *p; ! 609: { ! 610: register cc; ! 611: int scc, k; ! 612: int c, lc; ! 613: ! 614: scc = *s; ! 615: lc = 077777; ! 616: switch (c = *p) { ! 617: ! 618: case '[': ! 619: k = 0; ! 620: while (cc = *++p) { ! 621: switch (cc) { ! 622: ! 623: case ']': ! 624: if (k) ! 625: return(amatch(++s, ++p)); ! 626: else ! 627: return(0); ! 628: ! 629: case '-': ! 630: k |= lc <= scc & scc <= (cc=p[1]); ! 631: } ! 632: if (scc==(lc=cc)) k++; ! 633: } ! 634: return(0); ! 635: ! 636: case '?': ! 637: caseq: ! 638: if(scc) return(amatch(++s, ++p)); ! 639: return(0); ! 640: case '*': ! 641: return(umatch(s, ++p)); ! 642: case 0: ! 643: return(!scc); ! 644: } ! 645: if (c==scc) goto caseq; ! 646: return(0); ! 647: } ! 648: ! 649: umatch(s, p) ! 650: register char *s, *p; ! 651: { ! 652: if(*p==0) return(1); ! 653: while(*s) ! 654: if (amatch(s++, p)) return(1); ! 655: return(0); ! 656: } ! 657: ! 658: bwrite(rp, c) ! 659: register short *rp; ! 660: register c; ! 661: { ! 662: register short *wp = Wp; ! 663: ! 664: c = (c+1) >> 1; ! 665: while(c--) { ! 666: if(!Wct) { ! 667: again: ! 668: if(write(Cpio, (char *)Dbuf, Bufsize)<0) { ! 669: Cpio = chgreel(1, Cpio); ! 670: goto again; ! 671: } ! 672: Wct = Bufsize >> 1; ! 673: wp = Dbuf; ! 674: ++Blocks; ! 675: } ! 676: *wp++ = *rp++; ! 677: --Wct; ! 678: } ! 679: Wp = wp; ! 680: } ! 681: chgreel(x, fl) ! 682: { ! 683: register f; ! 684: char str[22]; ! 685: FILE *devtty; ! 686: struct stat statb; ! 687: extern errno; ! 688: ! 689: fprintf(stderr, "find: errno: %d, ", errno); ! 690: fprintf(stderr, "find: can't %s\n", x? "write output": "read input"); ! 691: fstat(fl, &statb); ! 692: if((statb.st_mode&S_IFMT) != S_IFCHR) ! 693: exit(1); ! 694: again: ! 695: fprintf(stderr, "If you want to go on, type device/file name %s\n", ! 696: "when ready"); ! 697: devtty = fopen("/dev/tty", "r"); ! 698: fgets(str, 20, devtty); ! 699: str[strlen(str) - 1] = '\0'; ! 700: if(!*str) ! 701: exit(1); ! 702: close(fl); ! 703: if((f = open(str, x? 1: 0)) < 0) { ! 704: fprintf(stderr, "That didn't work"); ! 705: fclose(devtty); ! 706: goto again; ! 707: } ! 708: return f; ! 709: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.