| 1 | /* Copyright (c) 1988 AT&T */ |
| 2 | /* All Rights Reserved */ |
| 3 | |
| 4 | /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */ |
| 5 | /* The copyright notice above does not evidence any */ |
| 6 | /* actual or intended publication of such source code. */ |
| 7 | |
| 8 | #ident "@(#)cpio:cpio.c 1.30.1.11" |
| 9 | /* /sccs/src/cmd/s.cpio.c |
| 10 | cpio.c 1.30.1.11 1/11/86 13:46:48 |
| 11 | Reworked cpio which uses getopt(3) to interpret flag arguments and |
| 12 | changes reels to the save file name. |
| 13 | Performance and size improvements. |
| 14 | */ |
| 15 | |
| 16 | /* cpio COMPILE: cc -O cpio.c -s -i -o cpio -lgen -lerr |
| 17 | cpio -- copy file collections |
| 18 | |
| 19 | */ |
| 20 | #include <errno.h> |
| 21 | #include <stdio.h> |
| 22 | #include <fcntl.h> |
| 23 | #include <memory.h> |
| 24 | #include <pwd.h> |
| 25 | #include <string.h> |
| 26 | #include <signal.h> |
| 27 | #include <varargs.h> |
| 28 | #include <sys/param.h> |
| 29 | #include <sys/types.h> |
| 30 | #include <sys/stat.h> |
| 31 | #include <paths.h> |
| 32 | |
| 33 | struct utimbuf { |
| 34 | time_t actime; |
| 35 | time_t modtime; |
| 36 | }; |
| 37 | #ifndef S_IFIFO |
| 38 | #define S_IFIFO 010000 |
| 39 | #endif |
| 40 | |
| 41 | #define EQ(x,y) (strcmp(x,y)==0) |
| 42 | |
| 43 | /* MKSHORT: for VAX, Interdata, ... */ |
| 44 | /* Take a 4-byte long, lv, and turn it */ |
| 45 | /* into an array of two 2-byte shorts, v*/ |
| 46 | #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];} |
| 47 | |
| 48 | #define MAGIC 070707 /* cpio magic number */ |
| 49 | #define BSMAGIC 0143561 /* byte-swapped cpio magic number */ |
| 50 | #define IN 'i' /* copy in */ |
| 51 | #define OUT 'o' /* copy out */ |
| 52 | #define PASS 'p' /* direct copy */ |
| 53 | #define HDRSIZE (Hdr.h_name - (char *)&Hdr) /* header size minus filename field */ |
| 54 | #define LINKS 500 /* no. of links allocated per bunch */ |
| 55 | #define CHARS 76 /* ASCII header size minus filename field */ |
| 56 | #define BUFSIZE 512 /* In u370, can't use BUFSIZ or BSIZE */ |
| 57 | #define CPIOBSZ 4096 /* file read/write */ |
| 58 | #define MK_USHORT(a) (a & 00000177777) /* Make unsigned shorts for portable */ |
| 59 | /* header. Hardware may only know */ |
| 60 | /* integer operations and sign extend */ |
| 61 | /* the large unsigned short resulting */ |
| 62 | /* in 8 rather than 6 octal char in */ |
| 63 | /* the header. */ |
| 64 | |
| 65 | static struct stat Statb, Xstatb; |
| 66 | |
| 67 | /* Cpio header format */ |
| 68 | static struct header { |
| 69 | short h_magic; |
| 70 | short h_dev; |
| 71 | ushort h_ino; |
| 72 | ushort h_mode, |
| 73 | h_uid, |
| 74 | h_gid; |
| 75 | short h_nlink; |
| 76 | short h_rdev; |
| 77 | short h_mtime[2], |
| 78 | h_namesize, |
| 79 | h_filesize[2]; |
| 80 | char h_name[256]; |
| 81 | } Hdr; |
| 82 | |
| 83 | char Symlbuf[MAXPATHLEN + 1]; /* target of symbolic link */ |
| 84 | static unsigned Bufsize = BUFSIZE; /* default record size */ |
| 85 | static char Buf[CPIOBSZ], *Cbuf; |
| 86 | static char *Cp; |
| 87 | |
| 88 | |
| 89 | static |
| 90 | short Option, |
| 91 | Dir, |
| 92 | Uncond, |
| 93 | PassLink, |
| 94 | Rename, |
| 95 | Toc, |
| 96 | Verbose, |
| 97 | Mod_time, |
| 98 | Acc_time, |
| 99 | Cflag, |
| 100 | fflag, |
| 101 | Swap, |
| 102 | byteswap, |
| 103 | halfswap; |
| 104 | |
| 105 | static |
| 106 | int Ifile, |
| 107 | Ofile, |
| 108 | Input = 0, |
| 109 | Output = 1; |
| 110 | /* sBlocks: short Blocks. Cumulative character */ |
| 111 | /* count for short reads in bread(). Encountered */ |
| 112 | /* with communication lines and pipes as in: */ |
| 113 | /* split -100 cpio_archive; cat xa* | cpio -icd */ |
| 114 | static |
| 115 | long sBlocks, |
| 116 | Blocks, |
| 117 | Longfile, |
| 118 | Longtime; |
| 119 | |
| 120 | static |
| 121 | char Fullname[256], |
| 122 | Name[256]; |
| 123 | static |
| 124 | int Pathend; |
| 125 | static |
| 126 | char *swfile; |
| 127 | static |
| 128 | char *eommsg = "Change to part %d and press RETURN key. [q] "; |
| 129 | |
| 130 | static |
| 131 | FILE *Rtty, |
| 132 | *Wtty; |
| 133 | static |
| 134 | char ttyname[] = _PATH_TTY; |
| 135 | |
| 136 | static |
| 137 | char **Pattern = 0; |
| 138 | static |
| 139 | char Chdr[500]; |
| 140 | static |
| 141 | short Dev; |
| 142 | ushort Uid, |
| 143 | A_directory, |
| 144 | A_special, |
| 145 | A_symlink, |
| 146 | Filetype = S_IFMT; |
| 147 | |
| 148 | extern errno; |
| 149 | extern void exit(); |
| 150 | char *malloc(); |
| 151 | FILE *popen(); |
| 152 | |
| 153 | static char *smemcpy(); |
| 154 | |
| 155 | static |
| 156 | union { |
| 157 | long l; |
| 158 | short s[2]; |
| 159 | char c[4]; |
| 160 | } U; |
| 161 | |
| 162 | /* for VAX, Interdata, ... */ |
| 163 | static |
| 164 | long mklong(v) |
| 165 | short v[]; |
| 166 | { |
| 167 | U.l = 1; |
| 168 | if(U.c[0]) |
| 169 | U.s[0] = v[1], U.s[1] = v[0]; |
| 170 | else |
| 171 | U.s[0] = v[0], U.s[1] = v[1]; |
| 172 | return U.l; |
| 173 | } |
| 174 | |
| 175 | static usage(), chkswfile(), getname(), bintochar(), chkhdr(), gethdr(); |
| 176 | static ckname(), openout(), breread(), bread(), bwrite(), eomchgreel(); |
| 177 | static postml(), pentry(), nmatch(), gmatch(), umatch(), set_time(); |
| 178 | static chgreel(), missdir(), pwd(), fperr(), fperrno(); |
| 179 | |
| 180 | main(argc, argv) |
| 181 | int argc; |
| 182 | char **argv; |
| 183 | { |
| 184 | register ct; |
| 185 | long filesz; |
| 186 | int symlsz; |
| 187 | register char *fullp; |
| 188 | register i; |
| 189 | int ans; |
| 190 | register char *symlinkp; |
| 191 | short select; /* set when files are selected */ |
| 192 | extern char *optarg; |
| 193 | extern int optind; |
| 194 | |
| 195 | signal(SIGSYS, SIG_IGN); |
| 196 | if(argc <= 1 || *argv[1] != '-') |
| 197 | usage(); |
| 198 | Uid = getuid(); |
| 199 | |
| 200 | while( (ans = getopt( argc, argv, "aBC:ifopcdlmrSsbtuvM:6eI:O:")) != EOF ) { |
| 201 | |
| 202 | switch( ans ) { |
| 203 | case 'a': /* reset access time */ |
| 204 | Acc_time++; |
| 205 | break; |
| 206 | case 'B': /* change record size to 5120 bytes */ |
| 207 | Bufsize = 5120; |
| 208 | break; |
| 209 | case 'C': /* reset buffer size to arbitrary valu |
| 210 | */ |
| 211 | Bufsize = atoi( optarg ); |
| 212 | if( Bufsize == 0 ) { |
| 213 | fperr("Illegal argument to -%c, '%s'", |
| 214 | ans, optarg ); |
| 215 | exit(2); |
| 216 | } |
| 217 | break; |
| 218 | case 'i': |
| 219 | Option = IN; |
| 220 | break; |
| 221 | case 'f': /* copy files not matched by patterns */ |
| 222 | fflag++; |
| 223 | break; |
| 224 | case 'o': |
| 225 | Option = OUT; |
| 226 | break; |
| 227 | case 'p': |
| 228 | Option = PASS; |
| 229 | break; |
| 230 | case 'c': /* ASCII header */ |
| 231 | Cflag++; |
| 232 | break; |
| 233 | case 'd': /* create directories when needed */ |
| 234 | Dir++; |
| 235 | break; |
| 236 | case 'l': /* link files, when necessary */ |
| 237 | PassLink++; |
| 238 | break; |
| 239 | case 'm': /* retain mod time */ |
| 240 | Mod_time++; |
| 241 | break; |
| 242 | case 'r': /* rename files interactively */ |
| 243 | Rename++; |
| 244 | Rtty = fopen(ttyname, "r"); |
| 245 | Wtty = fopen(ttyname, "w"); |
| 246 | if(Rtty==NULL || Wtty==NULL) { |
| 247 | fperrno("Cannot rename (%s missing)", |
| 248 | ttyname ); |
| 249 | exit(2); |
| 250 | } |
| 251 | break; |
| 252 | case 'S': /* swap halfwords */ |
| 253 | halfswap++; |
| 254 | Swap++; |
| 255 | break; |
| 256 | case 's': /* swap bytes */ |
| 257 | byteswap++; |
| 258 | Swap++; |
| 259 | break; |
| 260 | case 'b': /* swap both bytes and halfwords */ |
| 261 | halfswap++; |
| 262 | byteswap++; |
| 263 | Swap++; |
| 264 | break; |
| 265 | case 't': /* table of contents */ |
| 266 | Toc++; |
| 267 | break; |
| 268 | case 'u': /* copy unconditionally */ |
| 269 | Uncond++; |
| 270 | break; |
| 271 | case 'v': /* verbose - print out file names */ |
| 272 | Verbose++; |
| 273 | break; |
| 274 | case 'M': /* alternate message for end-of-media */ |
| 275 | eommsg = optarg; |
| 276 | break; |
| 277 | case '6': /* for old, sixth-edition files */ |
| 278 | Filetype = 060000; |
| 279 | break; |
| 280 | case 'I': |
| 281 | chkswfile( swfile, ans, Option ); |
| 282 | if( (i = open( optarg, O_RDONLY ) ) < 0) { |
| 283 | fperrno("Cannot open <%s> for input", optarg); |
| 284 | exit(2); |
| 285 | } |
| 286 | if( dup2(i, Input ) < 0 ) { |
| 287 | fperrno("Cannot dup to standard input"); |
| 288 | exit(2); |
| 289 | } |
| 290 | swfile = optarg; |
| 291 | break; |
| 292 | case 'O': |
| 293 | chkswfile( swfile, ans, Option ); |
| 294 | if( (i = open( optarg, O_WRONLY | O_CREAT | O_TRUNC, |
| 295 | 0666 ) ) < 0) { |
| 296 | fperrno("Cannot open <%s> for output", optarg); |
| 297 | exit(2); |
| 298 | } |
| 299 | if( dup2(i, Output ) < 0 ) { |
| 300 | fperrno("Cannot dup to standard output"); |
| 301 | exit(2); |
| 302 | } |
| 303 | swfile = optarg; |
| 304 | break; |
| 305 | default: |
| 306 | usage(); |
| 307 | } |
| 308 | } |
| 309 | if(!Option) { |
| 310 | (void) fprintf(stderr, |
| 311 | "Options must include one of -o, -i, or -p\n"); |
| 312 | exit(2); |
| 313 | } |
| 314 | |
| 315 | if(Option == PASS) { |
| 316 | if(Rename) { |
| 317 | (void) fprintf(stderr, |
| 318 | "Pass and Rename cannot be used together\n"); |
| 319 | exit(2); |
| 320 | } |
| 321 | if( Bufsize != BUFSIZE ) { |
| 322 | fprintf( stderr, "`B' or `C' option is irrelevant with the '-p' option\n"); |
| 323 | Bufsize = BUFSIZE; |
| 324 | } |
| 325 | |
| 326 | }else { |
| 327 | Cp = Cbuf = (char *)malloc(Bufsize); |
| 328 | if(Cp == NULL) { |
| 329 | perror("cpio"); |
| 330 | exit(2); |
| 331 | } |
| 332 | } |
| 333 | argc -= optind; |
| 334 | argv += optind; |
| 335 | |
| 336 | switch(Option) { |
| 337 | case OUT: |
| 338 | if(argc != 0) |
| 339 | usage(); |
| 340 | /* get filename, copy header and file out */ |
| 341 | while(getname()) { |
| 342 | if( mklong(Hdr.h_filesize) == 0L) { |
| 343 | if( Cflag ) |
| 344 | bwrite(Chdr,CHARS+Hdr.h_namesize); |
| 345 | else |
| 346 | bwrite(&Hdr, HDRSIZE+Hdr.h_namesize); |
| 347 | if(Verbose) |
| 348 | (void) fprintf(stderr, "%s\n", |
| 349 | Hdr.h_name); |
| 350 | continue; |
| 351 | } else if( A_symlink ) { |
| 352 | symlsz = (int) mklong(Hdr.h_filesize); |
| 353 | if (readlink(Hdr.h_name, Symlbuf, symlsz) < 0) { |
| 354 | fperrno("Cannot read symbolic link <%s>", |
| 355 | Hdr.h_name); |
| 356 | continue; |
| 357 | } |
| 358 | Symlbuf[symlsz] = '\0'; |
| 359 | bwrite(&Hdr, HDRSIZE+Hdr.h_namesize); |
| 360 | bwrite(Symlbuf, symlsz); |
| 361 | if(Verbose) |
| 362 | (void) fprintf(stderr, "%s\n", |
| 363 | Hdr.h_name); |
| 364 | continue; |
| 365 | } |
| 366 | if((Ifile = open(Hdr.h_name, 0)) < 0) { |
| 367 | fperrno("Cannot open <%s>", Hdr.h_name); |
| 368 | continue; |
| 369 | } |
| 370 | if ( Cflag ) |
| 371 | bwrite(Chdr,CHARS+Hdr.h_namesize); |
| 372 | else |
| 373 | bwrite(&Hdr, HDRSIZE+Hdr.h_namesize); |
| 374 | for(filesz=mklong(Hdr.h_filesize); filesz>0; filesz-= CPIOBSZ){ |
| 375 | ct = filesz>CPIOBSZ? CPIOBSZ: filesz; |
| 376 | if(read(Ifile, Buf, ct) < 0) { |
| 377 | fperrno("Cannot read %s", Hdr.h_name); |
| 378 | continue; |
| 379 | } |
| 380 | bwrite(Buf,ct); |
| 381 | } |
| 382 | close(Ifile); |
| 383 | if(Acc_time) { |
| 384 | struct utimbuf utb; |
| 385 | |
| 386 | utb.actime = Statb.st_atime; |
| 387 | utb.modtime = Statb.st_mtime; |
| 388 | (void)utime(Hdr.h_name, &utb); |
| 389 | } |
| 390 | if(Verbose) |
| 391 | (void) fprintf(stderr, "%s\n", Hdr.h_name); |
| 392 | } |
| 393 | |
| 394 | /* copy trailer, after all files have been copied */ |
| 395 | strcpy(Hdr.h_name, "TRAILER!!!"); |
| 396 | Hdr.h_magic = MAGIC; |
| 397 | MKSHORT(Hdr.h_filesize, 0L); |
| 398 | Hdr.h_namesize = strlen("TRAILER!!!") + 1; |
| 399 | if ( Cflag ) { |
| 400 | bintochar(0L); |
| 401 | bwrite(Chdr, CHARS+Hdr.h_namesize); |
| 402 | } |
| 403 | else |
| 404 | bwrite(&Hdr, HDRSIZE+Hdr.h_namesize); |
| 405 | bwrite(Cbuf, Bufsize); |
| 406 | break; |
| 407 | |
| 408 | case IN: |
| 409 | if(argc > 0 ) { /* save patterns, if any */ |
| 410 | Pattern = argv; |
| 411 | } |
| 412 | pwd(); |
| 413 | chkhdr(); |
| 414 | while(gethdr()) { |
| 415 | if (A_symlink) { |
| 416 | symlsz = (int) mklong(Hdr.h_filesize); |
| 417 | bread(Symlbuf, symlsz); |
| 418 | Symlbuf[symlsz] = '\0'; |
| 419 | if( ckname(Hdr.h_name) && !Toc) |
| 420 | (void)openout(Hdr.h_name, Symlbuf); |
| 421 | } else { |
| 422 | if( (select = ckname(Hdr.h_name)) && !Toc ) |
| 423 | Ofile = openout(Hdr.h_name, (char *)0); |
| 424 | else |
| 425 | Ofile = 0; |
| 426 | for(filesz=mklong(Hdr.h_filesize); filesz>0; filesz-= CPIOBSZ){ |
| 427 | ct = filesz>CPIOBSZ? CPIOBSZ: filesz; |
| 428 | bread(Buf, ct); |
| 429 | if(Ofile) { |
| 430 | if(Swap) |
| 431 | swap(Buf,ct,byteswap,halfswap); |
| 432 | if(write(Ofile, Buf, ct) < 0) { |
| 433 | fperrno("Cannot write %s", Hdr.h_name); |
| 434 | continue; |
| 435 | } |
| 436 | } |
| 437 | } |
| 438 | if( Ofile ) { |
| 439 | (void) close(Ofile); |
| 440 | if(chmod(Hdr.h_name, Hdr.h_mode) < 0) |
| 441 | fperrno("Cannot change mode of <%s>", |
| 442 | Hdr.h_name); |
| 443 | set_time(Hdr.h_name, mklong(Hdr.h_mtime), mklong(Hdr.h_mtime)); |
| 444 | } |
| 445 | } |
| 446 | if(select) { |
| 447 | if(Verbose) |
| 448 | if(Toc) |
| 449 | pentry(Hdr.h_name); |
| 450 | else |
| 451 | puts(Hdr.h_name); |
| 452 | else if(Toc) |
| 453 | puts(Hdr.h_name); |
| 454 | } |
| 455 | } |
| 456 | break; |
| 457 | |
| 458 | case PASS: /* move files around */ |
| 459 | if(argc != 1) |
| 460 | usage(); |
| 461 | if(access(argv[0], 2) == -1) { |
| 462 | (void) fperrno("Cannot write in <%s>", argv[0]); |
| 463 | exit(2); |
| 464 | } |
| 465 | strcpy(Fullname, argv[0]); /* destination directory */ |
| 466 | if(stat(Fullname, &Xstatb) < 0) { |
| 467 | fperrno("Cannot stat <%s>", Fullname); |
| 468 | exit(2); |
| 469 | } |
| 470 | if((Xstatb.st_mode&S_IFMT) != S_IFDIR) { |
| 471 | (void) fprintf(stderr, "<%s> is not a directory", |
| 472 | Fullname); |
| 473 | exit(2); |
| 474 | } |
| 475 | Dev = Xstatb.st_dev; |
| 476 | if( Fullname[ strlen(Fullname) - 1 ] != '/' ) |
| 477 | strcat(Fullname, "/"); |
| 478 | fullp = Fullname + strlen(Fullname); |
| 479 | |
| 480 | while(getname()) { |
| 481 | if (A_directory && !Dir) |
| 482 | fperr("Use `-d' option to copy <%s>", |
| 483 | Hdr.h_name); |
| 484 | if(!ckname(Hdr.h_name)) |
| 485 | continue; |
| 486 | i = 0; |
| 487 | while(Hdr.h_name[i] == '/') |
| 488 | i++; |
| 489 | strcpy(fullp, &(Hdr.h_name[i])); |
| 490 | |
| 491 | if( PassLink && !A_directory && Dev == Statb.st_dev ) { |
| 492 | if(link(Hdr.h_name, Fullname) < 0) { |
| 493 | switch(errno) { |
| 494 | case ENOENT: |
| 495 | if(missdir(Fullname) != 0) { |
| 496 | fperrno("Cannot create directory for <%s>", |
| 497 | Fullname); |
| 498 | continue; |
| 499 | } |
| 500 | break; |
| 501 | case EEXIST: |
| 502 | if(unlink(Fullname) < 0) { |
| 503 | fperrno("Cannot unlink <%s>", |
| 504 | Fullname); |
| 505 | continue; |
| 506 | } |
| 507 | break; |
| 508 | default: |
| 509 | fperrno("Cannot link <%s> to <%s>", |
| 510 | Hdr.h_name, Fullname); |
| 511 | continue; |
| 512 | } |
| 513 | if(link(Hdr.h_name, Fullname) < 0) { |
| 514 | fperrno("Cannot link <%s> to <%s>", |
| 515 | Hdr.h_name, Fullname); |
| 516 | continue; |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | goto ckverbose; |
| 521 | } |
| 522 | if( A_symlink ) { |
| 523 | symlsz = (int) mklong(Hdr.h_filesize); |
| 524 | if (readlink(Hdr.h_name, Symlbuf, symlsz) < 0) { |
| 525 | fperrno("Cannot read symbolic link <%s>", |
| 526 | Hdr.h_name); |
| 527 | continue; |
| 528 | } |
| 529 | Symlbuf[symlsz] = '\0'; |
| 530 | if(!openout(Fullname, Symlbuf)) |
| 531 | continue; |
| 532 | Blocks += ((symlsz + (BUFSIZE - 1)) / BUFSIZE); |
| 533 | if(Verbose) |
| 534 | puts(Fullname); |
| 535 | continue; |
| 536 | } |
| 537 | if(!(Ofile = openout(Fullname, (char *)0))) |
| 538 | continue; |
| 539 | if((Ifile = open(Hdr.h_name, 0)) < 0) { |
| 540 | fperrno("Cannot open <%s>", Hdr.h_name); |
| 541 | close(Ofile); |
| 542 | continue; |
| 543 | } |
| 544 | filesz = Statb.st_size; |
| 545 | for(; filesz > 0; filesz -= CPIOBSZ) { |
| 546 | ct = filesz>CPIOBSZ? CPIOBSZ: filesz; |
| 547 | if(read(Ifile, Buf, ct) < 0) { |
| 548 | fperrno("Cannot read %s", Hdr.h_name); |
| 549 | break; |
| 550 | } |
| 551 | if(write(Ofile, Buf, ct) < 0) { |
| 552 | fperrno("Cannot write %s", Hdr.h_name); |
| 553 | break; |
| 554 | } |
| 555 | /* Removed u370 ifdef which caused cpio */ |
| 556 | /* to report blocks in terms of 4096 bytes. */ |
| 557 | |
| 558 | Blocks += ((ct + (BUFSIZE - 1)) / BUFSIZE); |
| 559 | } |
| 560 | close(Ifile); |
| 561 | if(Acc_time) { |
| 562 | struct utimbuf utb; |
| 563 | |
| 564 | utb.actime = Statb.st_atime; |
| 565 | utb.modtime = Statb.st_mtime; |
| 566 | (void)utime(Hdr.h_name, &utb); |
| 567 | } |
| 568 | if(Ofile) { |
| 569 | close(Ofile); |
| 570 | if(chmod(Fullname, Hdr.h_mode) < 0) |
| 571 | fperrno("Cannot change mode of <%s>", |
| 572 | Fullname); |
| 573 | set_time(Fullname, Statb.st_atime, mklong(Hdr.h_mtime)); |
| 574 | ckverbose: |
| 575 | if(Verbose) |
| 576 | puts(Fullname); |
| 577 | } |
| 578 | } |
| 579 | } |
| 580 | /* print number of blocks actually copied */ |
| 581 | Blocks += ((sBlocks + (BUFSIZE - 1)) / BUFSIZE); |
| 582 | (void) fprintf(stderr, "%ld blocks\n", Blocks * (Bufsize>>9)); |
| 583 | exit(0); |
| 584 | } |
| 585 | |
| 586 | static |
| 587 | usage() |
| 588 | { |
| 589 | (void) fprintf(stderr, |
| 590 | "Usage: %s\n %s\n %s\n %s\n %s\n", |
| 591 | "cpio -o[acvB] <name-list >collection", |
| 592 | "cpio -o[acvB] -Ocollection <name-list", |
| 593 | "cpio -i[cdmrstuvfB6] [ pattern ... ] <collection", |
| 594 | "cpio -i[cdmrstuvfB6] -Icollection [ pattern ... ]", |
| 595 | "cpio -p[adlmruv] directory <name-list"); |
| 596 | } |
| 597 | |
| 598 | static |
| 599 | chkswfile( sp, c, option ) |
| 600 | char *sp; |
| 601 | char c; |
| 602 | short option; |
| 603 | { |
| 604 | if( !option ) { |
| 605 | fperr( "-%c must be specified before -%c option", |
| 606 | c == 'I' ? 'i' : 'o', c ); |
| 607 | exit(2); |
| 608 | } |
| 609 | if( (c == 'I' && option != IN) || (c == 'O' && option != OUT) ) { |
| 610 | fperr( "-%c option not permitted with -%c option", c, |
| 611 | option ); |
| 612 | exit(2); |
| 613 | } |
| 614 | if( !sp ) |
| 615 | return; |
| 616 | fperr("No more than one -I or -O flag permitted"); |
| 617 | exit(2); |
| 618 | } |
| 619 | |
| 620 | static |
| 621 | getname() /* get file name, get info for header */ |
| 622 | { |
| 623 | register char *namep = Name; |
| 624 | register ushort ftype; |
| 625 | struct stat Lstatb; |
| 626 | long tlong; |
| 627 | |
| 628 | for(;;) { |
| 629 | if(gets(namep) == NULL) |
| 630 | return 0; |
| 631 | while(*namep == '.' && namep[1] == '/') { |
| 632 | namep++; |
| 633 | while(*namep == '/') namep++; |
| 634 | } |
| 635 | strcpy(Hdr.h_name, namep); |
| 636 | if(lstat(namep, &Statb) < 0) { |
| 637 | fperrno("Cannot stat <%s>", Hdr.h_name); |
| 638 | continue; |
| 639 | } |
| 640 | ftype = Statb.st_mode & Filetype; |
| 641 | A_directory = (ftype == S_IFDIR); |
| 642 | A_special = (ftype == S_IFBLK) |
| 643 | || (ftype == S_IFCHR) |
| 644 | || (ftype == S_IFIFO); |
| 645 | A_symlink = (ftype == S_IFLNK); |
| 646 | Hdr.h_magic = MAGIC; |
| 647 | Hdr.h_namesize = strlen(Hdr.h_name) + 1; |
| 648 | Hdr.h_uid = Statb.st_uid; |
| 649 | Hdr.h_gid = Statb.st_gid; |
| 650 | Hdr.h_dev = Statb.st_dev; |
| 651 | Hdr.h_ino = Statb.st_ino; |
| 652 | Hdr.h_mode = Statb.st_mode; |
| 653 | MKSHORT(Hdr.h_mtime, Statb.st_mtime); |
| 654 | Hdr.h_nlink = Statb.st_nlink; |
| 655 | tlong = ((Hdr.h_mode&S_IFMT) == S_IFREG || |
| 656 | (Hdr.h_mode&S_IFMT) == S_IFLNK)? Statb.st_size: 0L; |
| 657 | MKSHORT(Hdr.h_filesize, tlong); |
| 658 | Hdr.h_rdev = Statb.st_rdev; |
| 659 | if( Cflag ) |
| 660 | bintochar(tlong); |
| 661 | return 1; |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | static |
| 666 | bintochar(t) /* ASCII header write */ |
| 667 | long t; |
| 668 | { |
| 669 | sprintf(Chdr,"%.6o%.6ho%.6ho%.6ho%.6ho%.6ho%.6ho%.6ho%.11lo%.6ho%.11lo%s", |
| 670 | MAGIC, MK_USHORT(Statb.st_dev), MK_USHORT(Statb.st_ino), Statb.st_mode, Statb.st_uid, |
| 671 | Statb.st_gid, Statb.st_nlink, MK_USHORT(Statb.st_rdev), |
| 672 | Statb.st_mtime, (short)strlen(Hdr.h_name)+1, t, Hdr.h_name); |
| 673 | } |
| 674 | |
| 675 | static |
| 676 | chartobin() /* ASCII header read */ |
| 677 | { |
| 678 | sscanf(Chdr, "%6ho%6ho%6ho%6ho%6ho%6ho%6ho%6ho%11lo%6ho%11lo", |
| 679 | &Hdr.h_magic, &Hdr.h_dev, &Hdr.h_ino, &Hdr.h_mode, &Hdr.h_uid, |
| 680 | &Hdr.h_gid, &Hdr.h_nlink, &Hdr.h_rdev, &Longtime, |
| 681 | &Hdr.h_namesize, &Longfile); |
| 682 | MKSHORT(Hdr.h_filesize, Longfile); |
| 683 | MKSHORT(Hdr.h_mtime, Longtime); |
| 684 | } |
| 685 | |
| 686 | |
| 687 | /* Check the header for the magic number. Switch modes automatically to |
| 688 | match the type of header found. |
| 689 | */ |
| 690 | static |
| 691 | chkhdr() |
| 692 | { |
| 693 | bread(Chdr, CHARS); |
| 694 | chartobin(); |
| 695 | if( Hdr.h_magic == MAGIC ) |
| 696 | Cflag = 1; |
| 697 | else { |
| 698 | breread(&Hdr.h_magic, sizeof Hdr.h_magic); |
| 699 | if( Hdr.h_magic == MAGIC || Hdr.h_magic == (short)BSMAGIC ) |
| 700 | Cflag = 0; |
| 701 | else { |
| 702 | fperr("This is not a cpio file. Bad magic number."); |
| 703 | exit(2); |
| 704 | } |
| 705 | } |
| 706 | breread(Chdr, 0); |
| 707 | } |
| 708 | |
| 709 | |
| 710 | static |
| 711 | gethdr() /* get file headers */ |
| 712 | { |
| 713 | register ushort ftype; |
| 714 | |
| 715 | if (Cflag) { |
| 716 | bread(Chdr, CHARS); |
| 717 | chartobin(); |
| 718 | } |
| 719 | else |
| 720 | bread(&Hdr, HDRSIZE); |
| 721 | |
| 722 | if(Hdr.h_magic == (short)BSMAGIC) |
| 723 | swap((char *)&Hdr, HDRSIZE, 1, 0); |
| 724 | else if( Hdr.h_magic != MAGIC ) { |
| 725 | fperr("Out of phase--get help"); |
| 726 | exit(2); |
| 727 | } |
| 728 | bread(Hdr.h_name, Hdr.h_namesize); |
| 729 | if(EQ(Hdr.h_name, "TRAILER!!!")) |
| 730 | return 0; |
| 731 | ftype = Hdr.h_mode & Filetype; |
| 732 | A_directory = (ftype == S_IFDIR); |
| 733 | A_special = (ftype == S_IFBLK) |
| 734 | || (ftype == S_IFCHR) |
| 735 | || (ftype == S_IFIFO); |
| 736 | A_symlink = (ftype == S_IFLNK); |
| 737 | return 1; |
| 738 | } |
| 739 | |
| 740 | static |
| 741 | ckname(namep) /* check filenames with patterns given on cmd line */ |
| 742 | register char *namep; |
| 743 | { |
| 744 | char buf[sizeof Hdr.h_name]; |
| 745 | |
| 746 | if(fflag ^ !nmatch(namep, Pattern)) { |
| 747 | return 0; |
| 748 | } |
| 749 | if(Rename && !A_directory) { /* rename interactively */ |
| 750 | fprintf(Wtty, "Rename <%s>\n", namep); |
| 751 | fflush(Wtty); |
| 752 | fgets(buf, sizeof buf, Rtty); |
| 753 | if(feof(Rtty)) |
| 754 | exit(2); |
| 755 | buf[strlen(buf) - 1] = '\0'; |
| 756 | if(EQ(buf, "")) { |
| 757 | strcpy(namep,buf); |
| 758 | printf("Skipped\n"); |
| 759 | return 0; |
| 760 | } |
| 761 | else if(EQ(buf, ".")) |
| 762 | printf("Same name\n"); |
| 763 | else |
| 764 | strcpy(namep,buf); |
| 765 | } |
| 766 | return 1; |
| 767 | } |
| 768 | |
| 769 | static |
| 770 | openout(namep, symlname) /* open files for writing, set all necessary info */ |
| 771 | register char *namep; |
| 772 | char *symlname; |
| 773 | { |
| 774 | register f; |
| 775 | register char *np; |
| 776 | int ans; |
| 777 | |
| 778 | if(!strncmp(namep, "./", 2)) |
| 779 | namep += 2; |
| 780 | np = namep; |
| 781 | if(A_directory) { |
| 782 | if( !Dir || Rename || EQ(namep, ".") || EQ(namep, "..") ) |
| 783 | /* do not consider . or .. files */ |
| 784 | return 0; |
| 785 | if(stat(namep, &Xstatb) == -1) { |
| 786 | |
| 787 | /* try creating (only twice) */ |
| 788 | ans = 0; |
| 789 | do { |
| 790 | if(mkdir(namep, Hdr.h_mode) != 0) { |
| 791 | ans += 1; |
| 792 | }else { |
| 793 | ans = 0; |
| 794 | break; |
| 795 | } |
| 796 | }while(ans < 2 && missdir(namep) == 0); |
| 797 | if(ans == 1) { |
| 798 | fperrno("Cannot create directory for <%s>", |
| 799 | namep); |
| 800 | return(0); |
| 801 | }else if(ans == 2) { |
| 802 | fperrno("Cannot create directory <%s>", namep); |
| 803 | return(0); |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | ret: |
| 808 | if(chmod(namep, Hdr.h_mode) < 0) |
| 809 | fperrno("Cannot change mode of <%s>", namep); |
| 810 | if(Uid == 0) |
| 811 | if(chown(namep, Hdr.h_uid, Hdr.h_gid) < 0) |
| 812 | fperrno("Cannot change ownership of <%s>", |
| 813 | namep); |
| 814 | set_time(namep, mklong(Hdr.h_mtime), mklong(Hdr.h_mtime)); |
| 815 | return 0; |
| 816 | } |
| 817 | if(Hdr.h_nlink > 1) |
| 818 | if(!postml(namep, np)) |
| 819 | return 0; |
| 820 | if(lstat(namep, &Xstatb) == 0) { |
| 821 | if(Uncond && !((!(Xstatb.st_mode & S_IWRITE) || A_special) && (Uid != 0))) { |
| 822 | if(unlink(namep) < 0) { |
| 823 | fperrno("cannot unlink current <%s>", namep); |
| 824 | } |
| 825 | } |
| 826 | if(!Uncond && (mklong(Hdr.h_mtime) <= Xstatb.st_mtime)) { |
| 827 | /* There's a newer or same aged version of file on destination */ |
| 828 | fperr("current <%s> newer or same age", np); |
| 829 | return 0; |
| 830 | } |
| 831 | } |
| 832 | if( Option == PASS |
| 833 | && Hdr.h_ino == Xstatb.st_ino |
| 834 | && Hdr.h_dev == Xstatb.st_dev) { |
| 835 | fperr("Attempt to pass file to self!"); |
| 836 | exit(2); |
| 837 | } |
| 838 | if(A_symlink) { |
| 839 | /* try symlinking (only twice) */ |
| 840 | ans = 0; |
| 841 | do { |
| 842 | if(symlink( |
| 843 | symlname, namep) < 0) { |
| 844 | ans += 1; |
| 845 | }else { |
| 846 | ans = 0; |
| 847 | break; |
| 848 | } |
| 849 | }while(ans < 2 && missdir(np) == 0); |
| 850 | if(ans == 1) { |
| 851 | fperrno("Cannot create directory for <%s>", namep); |
| 852 | return(0); |
| 853 | }else if(ans == 2) { |
| 854 | fperrno("Cannot symlink <%s> and <%s>", namep, symlname); |
| 855 | return(0); |
| 856 | } |
| 857 | |
| 858 | return 0; |
| 859 | } |
| 860 | if(A_special) { |
| 861 | if((Hdr.h_mode & Filetype) == S_IFIFO) |
| 862 | Hdr.h_rdev = 0; |
| 863 | |
| 864 | /* try creating (only twice) */ |
| 865 | ans = 0; |
| 866 | do { |
| 867 | if(mknod(namep, Hdr.h_mode, Hdr.h_rdev) < 0) { |
| 868 | ans += 1; |
| 869 | }else { |
| 870 | ans = 0; |
| 871 | break; |
| 872 | } |
| 873 | }while(ans < 2 && missdir(np) == 0); |
| 874 | if(ans == 1) { |
| 875 | fperrno("Cannot create directory for <%s>", namep); |
| 876 | return(0); |
| 877 | }else if(ans == 2) { |
| 878 | fperrno("Cannot mknod <%s>", namep); |
| 879 | return(0); |
| 880 | } |
| 881 | |
| 882 | goto ret; |
| 883 | } |
| 884 | |
| 885 | /* try creating (only twice) */ |
| 886 | ans = 0; |
| 887 | do { |
| 888 | if((f = creat(namep, Hdr.h_mode)) < 0) { |
| 889 | ans += 1; |
| 890 | }else { |
| 891 | ans = 0; |
| 892 | break; |
| 893 | } |
| 894 | }while(ans < 2 && missdir(np) == 0); |
| 895 | if(ans == 1) { |
| 896 | fperrno("Cannot create directory for <%s>", namep); |
| 897 | return(0); |
| 898 | }else if(ans == 2) { |
| 899 | fperrno("Cannot create <%s>", namep); |
| 900 | return(0); |
| 901 | } |
| 902 | |
| 903 | if(Uid == 0) |
| 904 | if(chown(namep, Hdr.h_uid, Hdr.h_gid) < 0) |
| 905 | fperrno("Cannot change ownership of <%s>", namep); |
| 906 | return f; |
| 907 | } |
| 908 | |
| 909 | |
| 910 | /* Shared by bread() and breread() |
| 911 | */ |
| 912 | static int nleft = 0; /* unread chars left in Cbuf */ |
| 913 | static char *ip; /* pointer to next char to be read from Cbuf */ |
| 914 | |
| 915 | /* Reread the current buffer Cbuf. |
| 916 | A character count, c, of 0 simply resets the pointer so next bread gets |
| 917 | the same data again. |
| 918 | */ |
| 919 | static |
| 920 | breread(b, c) |
| 921 | char *b; |
| 922 | int c; |
| 923 | { |
| 924 | ip = Cbuf; |
| 925 | if( nleft ) |
| 926 | nleft = Bufsize; |
| 927 | if( !c ) |
| 928 | return; |
| 929 | bread(b, c); |
| 930 | } |
| 931 | |
| 932 | static |
| 933 | bread(b, c) |
| 934 | register char *b; |
| 935 | register int c; |
| 936 | { |
| 937 | register int rv; |
| 938 | register char *p = ip; |
| 939 | |
| 940 | if( !Cflag ) { |
| 941 | /* round c up to an even number */ |
| 942 | c = (c+1)/2; |
| 943 | c *= 2; |
| 944 | } |
| 945 | while( c ) { |
| 946 | if( nleft == 0 ) { |
| 947 | while( (rv = read(Input, Cbuf, Bufsize)) == 0 ) { |
| 948 | Input = chgreel(0, Input, rv); |
| 949 | } |
| 950 | if( rv == Bufsize ) { |
| 951 | nleft = Bufsize; |
| 952 | p = Cbuf; |
| 953 | ++Blocks; |
| 954 | } |
| 955 | else if( rv == -1 ) { |
| 956 | fperrno("Read error on archive"); |
| 957 | exit(2); |
| 958 | } |
| 959 | else if( rv < Bufsize ) { /* short read */ |
| 960 | smemcpy( &Cbuf[ Bufsize - rv ], Cbuf, rv ); |
| 961 | nleft = rv; |
| 962 | p = &Cbuf[ Bufsize - rv ]; |
| 963 | sBlocks += rv; |
| 964 | } |
| 965 | } |
| 966 | if( nleft <= c ) { |
| 967 | memcpy( b, p, nleft ); |
| 968 | c -= nleft; |
| 969 | b += nleft; |
| 970 | p += nleft; |
| 971 | nleft = 0; |
| 972 | } |
| 973 | else { |
| 974 | memcpy( b, p, c ); |
| 975 | nleft -= c; |
| 976 | b += c; |
| 977 | p += c; |
| 978 | c = 0; |
| 979 | } |
| 980 | } |
| 981 | ip = p; |
| 982 | } |
| 983 | |
| 984 | |
| 985 | static |
| 986 | bwrite(rp, c) |
| 987 | register char *rp; |
| 988 | register c; |
| 989 | { |
| 990 | register char *cp = Cp; |
| 991 | static unsigned Ccnt = 0; |
| 992 | register unsigned Cleft; |
| 993 | register int rv; |
| 994 | |
| 995 | if( !Cflag ) { |
| 996 | /* round c up to an even number */ |
| 997 | c = (c+1)/2; |
| 998 | c *= 2; |
| 999 | } |
| 1000 | while( c ) { |
| 1001 | if( (Cleft = Bufsize - Ccnt) <= c ) { |
| 1002 | memcpy( cp, rp, Cleft ); |
| 1003 | rv = write(Output, Cbuf, Bufsize); |
| 1004 | if( rv == 0 || ( rv == -1 && errno == ENXIO ) ) { |
| 1005 | rv = eomchgreel(); |
| 1006 | } |
| 1007 | if( rv == Bufsize ) { |
| 1008 | Ccnt = 0; |
| 1009 | cp = Cbuf; |
| 1010 | } |
| 1011 | else if( rv == -1 ) { |
| 1012 | fperrno("Write error on archive"); |
| 1013 | exit(2); |
| 1014 | } |
| 1015 | else if( rv < Bufsize ) { |
| 1016 | Output = chgreel(1, Output, 0); |
| 1017 | smemcpy( Cbuf, &Cbuf[ Bufsize - rv ], rv ); |
| 1018 | Ccnt = Bufsize - rv; |
| 1019 | cp = &Cbuf[ rv ]; |
| 1020 | } |
| 1021 | ++Blocks; |
| 1022 | rp += Cleft; |
| 1023 | c -= Cleft; |
| 1024 | } |
| 1025 | else { |
| 1026 | memcpy( cp, rp, c ); |
| 1027 | Ccnt += c; |
| 1028 | cp += c; |
| 1029 | rp += c; |
| 1030 | c = 0; |
| 1031 | } |
| 1032 | } |
| 1033 | Cp = cp; |
| 1034 | } |
| 1035 | |
| 1036 | |
| 1037 | static int reelcount = 1; /* used below and in chgreel() */ |
| 1038 | |
| 1039 | /* Change reel due to reaching end-of-media. |
| 1040 | Keep trying to get a successful write before considering the |
| 1041 | change-of-reel as successful. |
| 1042 | */ |
| 1043 | static |
| 1044 | int |
| 1045 | eomchgreel() |
| 1046 | { |
| 1047 | int rv; |
| 1048 | |
| 1049 | while( 1 ) { |
| 1050 | Output = chgreel(1, Output, 0); |
| 1051 | rv = write(Output, Cbuf, Bufsize); |
| 1052 | if( rv == Bufsize ) |
| 1053 | return rv; |
| 1054 | if( rv == -1 ) |
| 1055 | fperrno( "Unable to write this medium" ); |
| 1056 | else |
| 1057 | fperr( "Unable to write this medium: Premature EOF" ); |
| 1058 | (void) fprintf(stderr, "Try again.\n"); |
| 1059 | reelcount--; |
| 1060 | } |
| 1061 | /*NOTREACHED*/ |
| 1062 | } |
| 1063 | |
| 1064 | |
| 1065 | static |
| 1066 | postml(namep, np) /* linking funtion: Postml() is called after */ |
| 1067 | register char *namep, *np; /* namep is created. Postml() checks to see */ |
| 1068 | { /* if namep should be linked to np. If so, */ |
| 1069 | /* postml() removes the independent instance */ |
| 1070 | register i; /* of namep and links namep to np. */ |
| 1071 | static struct ml { |
| 1072 | short m_dev; |
| 1073 | ushort m_ino; |
| 1074 | char m_name[2]; |
| 1075 | } **ml = 0; |
| 1076 | register struct ml *mlp; |
| 1077 | static unsigned mlsize = 0; |
| 1078 | static unsigned mlinks = 0; |
| 1079 | char *lnamep; |
| 1080 | int ans; |
| 1081 | |
| 1082 | if( !ml ) { |
| 1083 | mlsize = LINKS; |
| 1084 | ml = (struct ml **) malloc(mlsize * sizeof(struct ml)); |
| 1085 | } |
| 1086 | else if( mlinks == mlsize ) { |
| 1087 | mlsize += LINKS; |
| 1088 | ml = (struct ml **) realloc((char *) ml, |
| 1089 | mlsize * sizeof(struct ml)); |
| 1090 | } |
| 1091 | if (ml == NULL) { |
| 1092 | fperr("Out of memory for links"); |
| 1093 | exit(2); |
| 1094 | } |
| 1095 | for(i = 0; i < mlinks; ++i) { |
| 1096 | mlp = ml[i]; |
| 1097 | if(mlp->m_ino==Hdr.h_ino && mlp->m_dev==Hdr.h_dev) { |
| 1098 | if(Verbose) |
| 1099 | printf("%s linked to %s\n", ml[i]->m_name, |
| 1100 | np); |
| 1101 | unlink(namep); |
| 1102 | if(Option == IN && *(mlp->m_name) != '/') { |
| 1103 | Fullname[Pathend] = '\0'; |
| 1104 | strcat(Fullname, mlp->m_name); |
| 1105 | lnamep = Fullname; |
| 1106 | } |
| 1107 | lnamep = mlp->m_name; |
| 1108 | |
| 1109 | /* try linking (only twice) */ |
| 1110 | ans = 0; |
| 1111 | do { |
| 1112 | if(link(lnamep, namep) < 0) { |
| 1113 | ans += 1; |
| 1114 | }else { |
| 1115 | ans = 0; |
| 1116 | break; |
| 1117 | } |
| 1118 | }while(ans < 2 && missdir(np) == 0); |
| 1119 | if(ans == 1) { |
| 1120 | fperrno("Cannot create directory for <%s>", np); |
| 1121 | return(0); |
| 1122 | }else if(ans == 2) { |
| 1123 | fperrno("Cannot link <%s> & <%s>", lnamep, np); |
| 1124 | return(0); |
| 1125 | } |
| 1126 | |
| 1127 | set_time(namep, mklong(Hdr.h_mtime), mklong(Hdr.h_mtime)); |
| 1128 | return 0; |
| 1129 | } |
| 1130 | } |
| 1131 | if( !(ml[mlinks] = (struct ml *)malloc(strlen(np) + 2 + sizeof(struct ml)))) { |
| 1132 | static int first=1; |
| 1133 | |
| 1134 | if(first) |
| 1135 | fperr("Out of memory for links"); |
| 1136 | first = 0; |
| 1137 | return 1; |
| 1138 | } |
| 1139 | ml[mlinks]->m_dev = Hdr.h_dev; |
| 1140 | ml[mlinks]->m_ino = Hdr.h_ino; |
| 1141 | strcpy(ml[mlinks]->m_name, np); |
| 1142 | ++mlinks; |
| 1143 | return 1; |
| 1144 | } |
| 1145 | |
| 1146 | static |
| 1147 | pentry(namep) /* print verbose table of contents */ |
| 1148 | register char *namep; |
| 1149 | { |
| 1150 | static short lastid = -1; |
| 1151 | static struct passwd *pw; |
| 1152 | static char tbuf[32]; |
| 1153 | char *ctime(); |
| 1154 | |
| 1155 | printf("%-7o", MK_USHORT(Hdr.h_mode)); |
| 1156 | if(lastid == Hdr.h_uid) |
| 1157 | printf("%-6s", pw->pw_name); |
| 1158 | else { |
| 1159 | setpwent(); |
| 1160 | if(pw = getpwuid((int)Hdr.h_uid)) { |
| 1161 | printf("%-6s", pw->pw_name); |
| 1162 | lastid = Hdr.h_uid; |
| 1163 | } else { |
| 1164 | printf("%-6d", Hdr.h_uid); |
| 1165 | lastid = -1; |
| 1166 | } |
| 1167 | } |
| 1168 | printf("%7ld ", mklong(Hdr.h_filesize)); |
| 1169 | U.l = mklong(Hdr.h_mtime); |
| 1170 | strcpy(tbuf, ctime((long *)&U.l)); |
| 1171 | tbuf[24] = '\0'; |
| 1172 | printf(" %s %s", &tbuf[4], namep); |
| 1173 | if (A_symlink) |
| 1174 | printf(" -> %s", Symlbuf); |
| 1175 | putchar('\n'); |
| 1176 | } |
| 1177 | |
| 1178 | /* pattern matching functions */ |
| 1179 | static |
| 1180 | nmatch(s, pat) |
| 1181 | char *s, **pat; |
| 1182 | { |
| 1183 | if( !pat ) |
| 1184 | return 1; |
| 1185 | while(*pat) { |
| 1186 | if((**pat == '!' && !gmatch(s, *pat+1)) |
| 1187 | || gmatch(s, *pat)) |
| 1188 | return 1; |
| 1189 | ++pat; |
| 1190 | } |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
| 1194 | |
| 1195 | static |
| 1196 | gmatch(s, p) |
| 1197 | register char *s, *p; |
| 1198 | { |
| 1199 | register int c; |
| 1200 | register cc, ok, lc, scc; |
| 1201 | |
| 1202 | scc = *s; |
| 1203 | lc = 077777; |
| 1204 | switch (c = *p) { |
| 1205 | |
| 1206 | case '[': |
| 1207 | ok = 0; |
| 1208 | while (cc = *++p) { |
| 1209 | switch (cc) { |
| 1210 | |
| 1211 | case ']': |
| 1212 | if (ok) |
| 1213 | return(gmatch(++s, ++p)); |
| 1214 | else |
| 1215 | return(0); |
| 1216 | |
| 1217 | case '-': |
| 1218 | ok |= ((lc <= scc) && (scc <= (cc=p[1]))); |
| 1219 | } |
| 1220 | if (scc==(lc=cc)) ok++; |
| 1221 | } |
| 1222 | return(0); |
| 1223 | |
| 1224 | case '?': |
| 1225 | caseq: |
| 1226 | if(scc) return(gmatch(++s, ++p)); |
| 1227 | return(0); |
| 1228 | case '*': |
| 1229 | return(umatch(s, ++p)); |
| 1230 | case 0: |
| 1231 | return(!scc); |
| 1232 | } |
| 1233 | if (c==scc) goto caseq; |
| 1234 | return(0); |
| 1235 | } |
| 1236 | |
| 1237 | |
| 1238 | |
| 1239 | static |
| 1240 | umatch(s, p) |
| 1241 | register char *s, *p; |
| 1242 | { |
| 1243 | if(*p==0) return(1); |
| 1244 | while(*s) |
| 1245 | if (gmatch(s++,p)) return(1); |
| 1246 | return(0); |
| 1247 | } |
| 1248 | |
| 1249 | swap(buf, bytecount, bytes, halfwords) /* swap halfwords, bytes or both */ |
| 1250 | char *buf; |
| 1251 | int bytecount; |
| 1252 | int bytes, halfwords; |
| 1253 | { |
| 1254 | register int count; |
| 1255 | int n, i; |
| 1256 | |
| 1257 | if(bytes) { |
| 1258 | register union swpbytes { |
| 1259 | short shortw; |
| 1260 | char charv[2]; |
| 1261 | } *pbuf; |
| 1262 | register char c; |
| 1263 | |
| 1264 | count = bytecount; |
| 1265 | pbuf = (union swpbytes *)buf; |
| 1266 | if (count % sizeof(union swpbytes)) |
| 1267 | pbuf->charv[count] = 0; |
| 1268 | count = (count + (sizeof(union swpbytes) - 1)) / sizeof(union swpbytes); |
| 1269 | while (count--) { |
| 1270 | c = pbuf->charv[0]; |
| 1271 | pbuf->charv[0] = pbuf->charv[1]; |
| 1272 | pbuf->charv[1] = c; |
| 1273 | ++pbuf; |
| 1274 | } |
| 1275 | } |
| 1276 | if (halfwords) { |
| 1277 | register union swphalf { |
| 1278 | long longw; |
| 1279 | short shortv[2]; |
| 1280 | char charv[4]; |
| 1281 | } *pbuf; |
| 1282 | register short cc; |
| 1283 | |
| 1284 | count = bytecount; |
| 1285 | pbuf = (union swphalf *)buf; |
| 1286 | if (n = count % sizeof(union swphalf)) |
| 1287 | if(bytes && n % 2) |
| 1288 | for(i = count + 1; i <= count + (sizeof(union swphalf) - n); i++) |
| 1289 | pbuf->charv[i] = 0; |
| 1290 | else |
| 1291 | for (i = count; i < count + (sizeof(union swphalf) - n); i++) |
| 1292 | pbuf->charv[i] = 0; |
| 1293 | count = (count + (sizeof(union swphalf) - 1)) / sizeof(union swphalf); |
| 1294 | while (count--) { |
| 1295 | cc = pbuf->shortv[0]; |
| 1296 | pbuf->shortv[0] = pbuf->shortv[1]; |
| 1297 | pbuf->shortv[1] = cc; |
| 1298 | ++pbuf; |
| 1299 | } |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | |
| 1304 | static |
| 1305 | set_time(namep, atime, mtime) /* set access and modification times */ |
| 1306 | register char *namep; |
| 1307 | time_t atime, mtime; |
| 1308 | { |
| 1309 | static struct utimbuf timevec; |
| 1310 | |
| 1311 | if(!Mod_time) |
| 1312 | return; |
| 1313 | timevec.actime = atime; |
| 1314 | timevec.modtime = mtime; |
| 1315 | (void)utime(namep, &timevec); |
| 1316 | } |
| 1317 | |
| 1318 | |
| 1319 | |
| 1320 | static |
| 1321 | chgreel(x, fl, rv) |
| 1322 | int x, fl, rv; |
| 1323 | { |
| 1324 | register f; |
| 1325 | char str[BUFSIZ]; |
| 1326 | struct stat statb; |
| 1327 | |
| 1328 | fstat(fl, &statb); |
| 1329 | if((statb.st_mode&S_IFMT) != S_IFCHR) { |
| 1330 | fperrno("Can't %s: ", x? "write output": "read input"); |
| 1331 | exit(2); |
| 1332 | } |
| 1333 | if( rv == 0 || |
| 1334 | ( rv == -1 && ( errno == ENOSPC || errno == ENXIO ) ) ) |
| 1335 | fperr( "\007Reached end of medium on %s", |
| 1336 | x? "output":"input" ); |
| 1337 | else { |
| 1338 | fperrno( "\007Encountered an error on %s", |
| 1339 | x? "output":"input" ); |
| 1340 | exit(2); |
| 1341 | } |
| 1342 | if( Rtty == NULL ) { |
| 1343 | Rtty = fopen(ttyname, "r"); |
| 1344 | if( Rtty == NULL ) { |
| 1345 | fperrno("Cannot prompt (can't open %s)", ttyname); |
| 1346 | exit(2); |
| 1347 | } |
| 1348 | } |
| 1349 | close(fl); |
| 1350 | reelcount++; |
| 1351 | again: |
| 1352 | if( swfile ) { |
| 1353 | askagain: |
| 1354 | fperr( eommsg, reelcount ); |
| 1355 | fgets(str, sizeof str, Rtty); |
| 1356 | switch( *str ) { |
| 1357 | case '\n': |
| 1358 | strcpy( str, swfile ); |
| 1359 | break; |
| 1360 | case 'q': |
| 1361 | exit(2); |
| 1362 | default: |
| 1363 | goto askagain; |
| 1364 | } |
| 1365 | } |
| 1366 | else { |
| 1367 | fperr("If you want to go on, type device/file name when ready."); |
| 1368 | fgets(str, sizeof str, Rtty); |
| 1369 | str[strlen(str) - 1] = '\0'; |
| 1370 | if(!*str) |
| 1371 | exit(2); |
| 1372 | } |
| 1373 | if((f = open(str, x? 1: 0)) < 0) { |
| 1374 | fperrno("Can't open <%s>", str); |
| 1375 | goto again; |
| 1376 | } |
| 1377 | return f; |
| 1378 | } |
| 1379 | |
| 1380 | |
| 1381 | |
| 1382 | static |
| 1383 | missdir(namep) |
| 1384 | register char *namep; |
| 1385 | { |
| 1386 | register char *np; |
| 1387 | register ct = 2; |
| 1388 | |
| 1389 | for(np = namep; *np; ++np) |
| 1390 | if(*np == '/') { |
| 1391 | if(np == namep) continue; /* skip over 'root slash' */ |
| 1392 | *np = '\0'; |
| 1393 | if(stat(namep, &Xstatb) == -1) { |
| 1394 | if(Dir) { |
| 1395 | if((ct = mkdir(namep, 0777)) != 0) { |
| 1396 | *np = '/'; |
| 1397 | return(ct); |
| 1398 | } |
| 1399 | }else { |
| 1400 | fperr("missing 'd' option"); |
| 1401 | return(-1); |
| 1402 | } |
| 1403 | } |
| 1404 | *np = '/'; |
| 1405 | } |
| 1406 | if (ct == 2) ct = 0; /* the file already exists */ |
| 1407 | return ct; |
| 1408 | } |
| 1409 | |
| 1410 | |
| 1411 | |
| 1412 | static |
| 1413 | pwd() /* get working directory */ |
| 1414 | { |
| 1415 | if (getwd(Fullname) == 0) { |
| 1416 | (void)fprintf(stderr, "cpio: %s\n", |
| 1417 | Fullname); |
| 1418 | exit(2); |
| 1419 | } |
| 1420 | Pathend = strlen(Fullname); |
| 1421 | Fullname[Pathend++] = '/'; |
| 1422 | Fullname[Pathend] = '\0'; |
| 1423 | } |
| 1424 | |
| 1425 | |
| 1426 | /* |
| 1427 | print message on the stderr |
| 1428 | */ |
| 1429 | static |
| 1430 | fperr( va_alist ) |
| 1431 | va_dcl |
| 1432 | { |
| 1433 | va_list args; |
| 1434 | char *fmt; |
| 1435 | |
| 1436 | va_start( args ); |
| 1437 | fprintf( stderr, "cpio: "); |
| 1438 | fmt = va_arg( args, char * ); |
| 1439 | vfprintf( stderr, fmt, args ); |
| 1440 | putc( '\n', stderr); |
| 1441 | fflush( stderr ); |
| 1442 | } |
| 1443 | |
| 1444 | /* |
| 1445 | print message on the stderr followed by error number and meaning. |
| 1446 | */ |
| 1447 | static |
| 1448 | fperrno( va_alist ) |
| 1449 | va_dcl |
| 1450 | { |
| 1451 | va_list args; |
| 1452 | char *fmt; |
| 1453 | |
| 1454 | va_start( args ); |
| 1455 | fprintf( stderr, "cpio: "); |
| 1456 | fmt = va_arg( args, char * ); |
| 1457 | vfprintf( stderr, fmt, args ); |
| 1458 | fprintf( stderr, ": " ); |
| 1459 | fflush( stderr ); |
| 1460 | perror(""); |
| 1461 | } |
| 1462 | |
| 1463 | |
| 1464 | /* Safe memory copy. |
| 1465 | Fast if the to and from strings do not overlap, |
| 1466 | slower but safe if they do. |
| 1467 | */ |
| 1468 | |
| 1469 | static char * |
| 1470 | smemcpy( to, from, count ) |
| 1471 | register char *to, *from; |
| 1472 | register unsigned count; |
| 1473 | { |
| 1474 | char *savedto; |
| 1475 | |
| 1476 | if( &to[ count ] <= from || &from[ count ] <= to ) |
| 1477 | return memcpy( to, from, count ); |
| 1478 | |
| 1479 | if( to == from ) |
| 1480 | return to; |
| 1481 | |
| 1482 | savedto = to; |
| 1483 | if( to < from ) |
| 1484 | while( count-- ) |
| 1485 | *(to++) = *(from++); |
| 1486 | else { |
| 1487 | to += count; |
| 1488 | from += count; |
| 1489 | while( count-- ) |
| 1490 | *(--to) = *(--from); |
| 1491 | } |
| 1492 | |
| 1493 | return savedto; |
| 1494 | } |