1 /* $NetBSD: interactive.c,v 1.26 2009/04/07 12:38:12 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1985, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)interactive.c 8.5 (Berkeley) 5/1/95"; 36 #else 37 __RCSID("$NetBSD: interactive.c,v 1.26 2009/04/07 12:38:12 lukem Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/param.h> 42 #include <sys/time.h> 43 #include <sys/stat.h> 44 45 #include <ufs/ufs/dinode.h> 46 #include <ufs/ufs/dir.h> 47 #include <ufs/ffs/fs.h> 48 #include <protocols/dumprestore.h> 49 50 #include <setjmp.h> 51 #include <glob.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 56 #include "restore.h" 57 #include "extern.h" 58 59 #define round(a, b) (((a) + (b) - 1) / (b) * (b)) 60 61 /* 62 * Things to handle interruptions. 63 */ 64 static int runshell; 65 static jmp_buf reset; 66 static char *nextarg = NULL; 67 68 /* 69 * Structure and routines associated with listing directories. 70 */ 71 struct afile { 72 ino_t fnum; /* inode number of file */ 73 char *fname; /* file name */ 74 size_t len; /* name length */ 75 char prefix; /* prefix character */ 76 char postfix; /* postfix character */ 77 }; 78 struct arglist { 79 int freeglob; /* glob structure needs to be freed */ 80 int argcnt; /* next globbed argument to return */ 81 glob_t glob; /* globbing information */ 82 char *cmd; /* the current command */ 83 }; 84 85 static char *copynext(char *, char *); 86 static int fcmp(const void *, const void *); 87 static void formatf(struct afile *, int); 88 static void getcmd(char *, char *, char *, struct arglist *); 89 struct dirent *glob_readdir(RST_DIR *dirp); 90 static int glob_stat(const char *, struct stat *); 91 static void mkentry(char *, struct direct *, struct afile *); 92 static void printlist(char *, char *); 93 94 /* 95 * Read and execute commands from the terminal. 96 */ 97 void 98 runcmdshell(void) 99 { 100 struct entry *np; 101 ino_t ino; 102 struct arglist arglist; 103 char curdir[MAXPATHLEN]; 104 char name[MAXPATHLEN]; 105 char cmd[BUFSIZ]; 106 107 arglist.freeglob = 0; 108 arglist.argcnt = 0; 109 arglist.glob.gl_flags = GLOB_ALTDIRFUNC; 110 arglist.glob.gl_opendir = (void *)rst_opendir; 111 arglist.glob.gl_readdir = (void *)glob_readdir; 112 arglist.glob.gl_closedir = (void *)rst_closedir; 113 arglist.glob.gl_lstat = glob_stat; 114 arglist.glob.gl_stat = glob_stat; 115 canon("/", curdir); 116 loop: 117 if (setjmp(reset) != 0) { 118 if (arglist.freeglob != 0) { 119 arglist.freeglob = 0; 120 arglist.argcnt = 0; 121 globfree(&arglist.glob); 122 } 123 nextarg = NULL; 124 volno = 0; 125 } 126 runshell = 1; 127 getcmd(curdir, cmd, name, &arglist); 128 switch (cmd[0]) { 129 /* 130 * Add elements to the extraction list. 131 */ 132 case 'a': 133 if (strncmp(cmd, "add", strlen(cmd)) != 0) 134 goto bad; 135 ino = dirlookup(name); 136 if (ino == 0) 137 break; 138 if (ino == ROOTINO) 139 dotflag = 1; 140 if (mflag) 141 pathcheck(name); 142 treescan(name, ino, addfile); 143 break; 144 /* 145 * Change working directory. 146 */ 147 case 'c': 148 if (strncmp(cmd, "cd", strlen(cmd)) != 0) 149 goto bad; 150 ino = dirlookup(name); 151 if (ino == 0) 152 break; 153 if (inodetype(ino) == LEAF) { 154 fprintf(stderr, "%s: not a directory\n", name); 155 break; 156 } 157 (void) strcpy(curdir, name); 158 break; 159 /* 160 * Delete elements from the extraction list. 161 */ 162 case 'd': 163 if (strncmp(cmd, "delete", strlen(cmd)) != 0) 164 goto bad; 165 np = lookupname(name); 166 if (np == NULL || (np->e_flags & NEW) == 0) { 167 fprintf(stderr, "%s: not on extraction list\n", name); 168 break; 169 } 170 treescan(name, np->e_ino, deletefile); 171 break; 172 /* 173 * Extract the requested list. 174 */ 175 case 'e': 176 if (strncmp(cmd, "extract", strlen(cmd)) != 0) 177 goto bad; 178 createfiles(); 179 createlinks(); 180 setdirmodes(0); 181 if (dflag) 182 checkrestore(); 183 volno = 0; 184 break; 185 /* 186 * List available commands. 187 */ 188 case 'h': 189 if (strncmp(cmd, "help", strlen(cmd)) != 0) 190 goto bad; 191 case '?': 192 fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", 193 "Available commands are:\n", 194 "\tls [arg] - list directory\n", 195 "\tcd arg - change directory\n", 196 "\tpwd - print current directory\n", 197 "\tadd [arg] - add `arg' to list of", 198 " files to be extracted\n", 199 "\tdelete [arg] - delete `arg' from", 200 " list of files to be extracted\n", 201 "\textract - extract requested files\n", 202 "\tsetmodes - set modes of requested directories\n", 203 "\tquit or xit - immediately exit program\n", 204 "\twhat - list dump header information\n", 205 "\tverbose - toggle verbose flag", 206 " (useful with ``ls'')\n", 207 "\thelp or `?' - print this list\n", 208 "\tDebug - turn on debugging\n", 209 "If no `arg' is supplied, the current", 210 " directory is used\n"); 211 break; 212 /* 213 * List a directory. 214 */ 215 case 'l': 216 if (strncmp(cmd, "ls", strlen(cmd)) != 0) 217 goto bad; 218 printlist(name, curdir); 219 break; 220 /* 221 * Print current directory. 222 */ 223 case 'p': 224 if (strncmp(cmd, "pwd", strlen(cmd)) != 0) 225 goto bad; 226 if (curdir[1] == '\0') 227 fprintf(stderr, "/\n"); 228 else 229 fprintf(stderr, "%s\n", &curdir[1]); 230 break; 231 /* 232 * Quit. 233 */ 234 case 'q': 235 if (strncmp(cmd, "quit", strlen(cmd)) != 0) 236 goto bad; 237 return; 238 case 'x': 239 if (strncmp(cmd, "xit", strlen(cmd)) != 0) 240 goto bad; 241 return; 242 /* 243 * Toggle verbose mode. 244 */ 245 case 'v': 246 if (strncmp(cmd, "verbose", strlen(cmd)) != 0) 247 goto bad; 248 if (vflag) { 249 fprintf(stderr, "verbose mode off\n"); 250 vflag = 0; 251 break; 252 } 253 fprintf(stderr, "verbose mode on\n"); 254 vflag++; 255 break; 256 /* 257 * Just restore requested directory modes. 258 */ 259 case 's': 260 if (strncmp(cmd, "setmodes", strlen(cmd)) != 0) 261 goto bad; 262 setdirmodes(FORCE); 263 break; 264 /* 265 * Print out dump header information. 266 */ 267 case 'w': 268 if (strncmp(cmd, "what", strlen(cmd)) != 0) 269 goto bad; 270 printdumpinfo(); 271 break; 272 /* 273 * Turn on debugging. 274 */ 275 case 'D': 276 if (strncmp(cmd, "Debug", strlen(cmd)) != 0) 277 goto bad; 278 if (dflag) { 279 fprintf(stderr, "debugging mode off\n"); 280 dflag = 0; 281 break; 282 } 283 fprintf(stderr, "debugging mode on\n"); 284 dflag++; 285 break; 286 /* 287 * Unknown command. 288 */ 289 default: 290 bad: 291 fprintf(stderr, "%s: unknown command; type ? for help\n", cmd); 292 break; 293 } 294 goto loop; 295 } 296 297 /* 298 * Read and parse an interactive command. 299 * The first word on the line is assigned to "cmd". If 300 * there are no arguments on the command line, then "curdir" 301 * is returned as the argument. If there are arguments 302 * on the line they are returned one at a time on each 303 * successive call to getcmd. Each argument is first assigned 304 * to "name". If it does not start with "/" the pathname in 305 * "curdir" is prepended to it. Finally "canon" is called to 306 * eliminate any embedded ".." components. 307 */ 308 static void 309 getcmd(char *curdir, char *cmd, char *name, struct arglist *ap) 310 { 311 char *cp; 312 static char input[BUFSIZ]; 313 char output[BUFSIZ]; 314 int globretval; 315 # define rawname input /* save space by reusing input buffer */ 316 317 /* 318 * Check to see if still processing arguments. 319 */ 320 if (ap->argcnt > 0) 321 goto retnext; 322 if (nextarg != NULL) 323 goto getnext; 324 /* 325 * Read a command line and trim off trailing white space. 326 */ 327 do { 328 fprintf(stderr, "%s > ", getprogname()); 329 (void) fflush(stderr); 330 (void) fgets(input, BUFSIZ, terminal); 331 } while (!feof(terminal) && input[0] == '\n'); 332 if (feof(terminal)) { 333 (void) strcpy(cmd, "quit"); 334 return; 335 } 336 for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--) 337 /* trim off trailing white space and newline */; 338 *++cp = '\0'; 339 /* 340 * Copy the command into "cmd". 341 */ 342 cp = copynext(input, cmd); 343 ap->cmd = cmd; 344 /* 345 * If no argument, use curdir as the default. 346 */ 347 if (*cp == '\0') { 348 (void) strcpy(name, curdir); 349 return; 350 } 351 nextarg = cp; 352 /* 353 * Find the next argument. 354 */ 355 getnext: 356 cp = copynext(nextarg, rawname); 357 if (*cp == '\0') 358 nextarg = NULL; 359 else 360 nextarg = cp; 361 /* 362 * If it is an absolute pathname, canonicalize it and return it. 363 */ 364 if (rawname[0] == '/') { 365 canon(rawname, name); 366 } else { 367 /* 368 * For relative pathnames, prepend the current directory to 369 * it then canonicalize and return it. 370 */ 371 (void) strcpy(output, curdir); 372 (void) strcat(output, "/"); 373 (void) strcat(output, rawname); 374 canon(output, name); 375 } 376 if ((globretval = glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob)) < 0) { 377 fprintf(stderr, "%s: %s: ", ap->cmd, name); 378 switch (globretval) { 379 case GLOB_NOSPACE: 380 fprintf(stderr, "out of memory\n"); 381 break; 382 case GLOB_NOMATCH: 383 fprintf(stderr, "no filename match.\n"); 384 break; 385 case GLOB_ABORTED: 386 fprintf(stderr, "glob() aborted.\n"); 387 break; 388 default: 389 fprintf(stderr, "unknown error!\n"); 390 break; 391 } 392 } 393 if (ap->glob.gl_pathc == 0) 394 return; 395 ap->freeglob = 1; 396 ap->argcnt = ap->glob.gl_pathc; 397 398 retnext: 399 strcpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt]); 400 if (--ap->argcnt == 0) { 401 ap->freeglob = 0; 402 globfree(&ap->glob); 403 } 404 # undef rawname 405 } 406 407 /* 408 * Strip off the next token of the input. 409 */ 410 static char * 411 copynext(char *input, char *output) 412 { 413 char *cp, *bp; 414 char quote; 415 416 for (cp = input; *cp == ' ' || *cp == '\t'; cp++) 417 /* skip to argument */; 418 bp = output; 419 while (*cp != ' ' && *cp != '\t' && *cp != '\0') { 420 /* 421 * Handle back slashes. 422 */ 423 if (*cp == '\\') { 424 if (*++cp == '\0') { 425 fprintf(stderr, 426 "command lines cannot be continued\n"); 427 continue; 428 } 429 *bp++ = *cp++; 430 continue; 431 } 432 /* 433 * The usual unquoted case. 434 */ 435 if (*cp != '\'' && *cp != '"') { 436 *bp++ = *cp++; 437 continue; 438 } 439 /* 440 * Handle single and double quotes. 441 */ 442 quote = *cp++; 443 while (*cp != quote && *cp != '\0') 444 *bp++ = *cp++; 445 if (*cp++ == '\0') { 446 fprintf(stderr, "missing %c\n", quote); 447 cp--; 448 continue; 449 } 450 } 451 *bp = '\0'; 452 return (cp); 453 } 454 455 /* 456 * Canonicalize file names to always start with ``./'' and 457 * remove any imbedded "." and ".." components. 458 */ 459 void 460 canon(const char *rawname, char *canonname) 461 { 462 char *cp, *np; 463 464 if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0) 465 (void) strcpy(canonname, ""); 466 else if (rawname[0] == '/') 467 (void) strcpy(canonname, "."); 468 else 469 (void) strcpy(canonname, "./"); 470 (void) strcat(canonname, rawname); 471 /* 472 * Eliminate multiple and trailing '/'s 473 */ 474 for (cp = np = canonname; *np != '\0'; cp++) { 475 *cp = *np++; 476 while (*cp == '/' && *np == '/') 477 np++; 478 } 479 *cp = '\0'; 480 if (*--cp == '/') 481 *cp = '\0'; 482 /* 483 * Eliminate extraneous "." and ".." from pathnames. 484 */ 485 for (np = canonname; *np != '\0'; ) { 486 np++; 487 cp = np; 488 while (*np != '/' && *np != '\0') 489 np++; 490 if (np - cp == 1 && *cp == '.') { 491 cp--; 492 (void) strcpy(cp, np); 493 np = cp; 494 } 495 if (np - cp == 2 && strncmp(cp, "..", 2) == 0) { 496 cp--; 497 while (cp > &canonname[1] && *--cp != '/') 498 /* find beginning of name */; 499 (void) strcpy(cp, np); 500 np = cp; 501 } 502 } 503 } 504 505 /* 506 * Do an "ls" style listing of a directory 507 */ 508 static void 509 printlist(char *name, char *basename) 510 { 511 struct afile *fp, *list, *listp; 512 struct direct *dp; 513 struct afile single; 514 RST_DIR *dirp; 515 int entries, len, namelen; 516 char locname[MAXPATHLEN + 1]; 517 518 dp = pathsearch(name); 519 listp = NULL; 520 if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) || 521 (!vflag && dp->d_ino == WINO)) 522 return; 523 if ((dirp = rst_opendir(name)) == NULL) { 524 entries = 1; 525 list = &single; 526 mkentry(name, dp, list); 527 len = strlen(basename) + 1; 528 if (strlen(name) - len > single.len) { 529 freename(single.fname); 530 single.fname = savename(&name[len]); 531 single.len = strlen(single.fname); 532 } 533 } else { 534 entries = 0; 535 while ((dp = rst_readdir(dirp)) != NULL) 536 entries++; 537 rst_closedir(dirp); 538 list = (struct afile *)malloc(entries * sizeof(struct afile)); 539 if (list == NULL) { 540 fprintf(stderr, "ls: out of memory\n"); 541 return; 542 } 543 if ((dirp = rst_opendir(name)) == NULL) 544 panic("directory reopen failed\n"); 545 fprintf(stderr, "%s:\n", name); 546 entries = 0; 547 listp = list; 548 (void) strncpy(locname, name, MAXPATHLEN); 549 (void) strncat(locname, "/", MAXPATHLEN); 550 namelen = strlen(locname); 551 while ((dp = rst_readdir(dirp)) != NULL) { 552 if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) 553 continue; 554 if (!vflag && (dp->d_ino == WINO || 555 strcmp(dp->d_name, ".") == 0 || 556 strcmp(dp->d_name, "..") == 0)) 557 continue; 558 locname[namelen] = '\0'; 559 if (namelen + dp->d_namlen >= MAXPATHLEN) { 560 fprintf(stderr, "%s%s: name exceeds %d char\n", 561 locname, dp->d_name, MAXPATHLEN); 562 } else { 563 (void) strncat(locname, dp->d_name, 564 (int)dp->d_namlen); 565 mkentry(locname, dp, listp++); 566 entries++; 567 } 568 } 569 rst_closedir(dirp); 570 if (entries == 0) { 571 fprintf(stderr, "\n"); 572 free(list); 573 return; 574 } 575 qsort((char *)list, entries, sizeof(struct afile), fcmp); 576 } 577 formatf(list, entries); 578 if (dirp != NULL) { 579 for (fp = listp - 1; fp >= list; fp--) 580 freename(fp->fname); 581 fprintf(stderr, "\n"); 582 free(list); 583 } 584 } 585 586 /* 587 * Read the contents of a directory. 588 */ 589 static void 590 mkentry(char *name, struct direct *dp, struct afile *fp) 591 { 592 char *cp; 593 struct entry *np; 594 595 fp->fnum = dp->d_ino; 596 fp->fname = savename(dp->d_name); 597 for (cp = fp->fname; *cp; cp++) 598 if (!vflag && (*cp < ' ' || *cp >= 0177)) 599 *cp = '?'; 600 fp->len = cp - fp->fname; 601 if (dflag && TSTINO(fp->fnum, dumpmap) == 0) 602 fp->prefix = '^'; 603 else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW)) 604 fp->prefix = '*'; 605 else 606 fp->prefix = ' '; 607 switch(dp->d_type) { 608 609 default: 610 fprintf(stderr, "Warning: undefined file type %d\n", 611 dp->d_type); 612 /* fall through */ 613 case DT_REG: 614 fp->postfix = ' '; 615 break; 616 617 case DT_LNK: 618 fp->postfix = '@'; 619 break; 620 621 case DT_FIFO: 622 case DT_SOCK: 623 fp->postfix = '='; 624 break; 625 626 case DT_CHR: 627 case DT_BLK: 628 fp->postfix = '#'; 629 break; 630 631 case DT_WHT: 632 fp->postfix = '%'; 633 break; 634 635 case DT_UNKNOWN: 636 case DT_DIR: 637 if (inodetype(dp->d_ino) == NODE) 638 fp->postfix = '/'; 639 else 640 fp->postfix = ' '; 641 break; 642 } 643 return; 644 } 645 646 /* 647 * Print out a pretty listing of a directory 648 */ 649 static void 650 formatf(struct afile *list, int nentry) 651 { 652 struct afile *fp, *endlist; 653 int haveprefix, havepostfix; 654 ino_t bigino; 655 size_t width, w; 656 int i, j, precision, columns, lines; 657 658 width = 0; 659 haveprefix = 0; 660 havepostfix = 0; 661 precision = 0; 662 bigino = ROOTINO; 663 endlist = &list[nentry]; 664 for (fp = &list[0]; fp < endlist; fp++) { 665 if (bigino < fp->fnum) 666 bigino = fp->fnum; 667 if (width < fp->len) 668 width = fp->len; 669 if (fp->prefix != ' ') 670 haveprefix = 1; 671 if (fp->postfix != ' ') 672 havepostfix = 1; 673 } 674 if (haveprefix) 675 width++; 676 if (havepostfix) 677 width++; 678 if (vflag) { 679 for (precision = 0, i = bigino; i > 0; i /= 10) 680 precision++; 681 width += precision + 1; 682 } 683 width++; 684 columns = 81 / width; 685 if (columns == 0) 686 columns = 1; 687 lines = (nentry + columns - 1) / columns; 688 for (i = 0; i < lines; i++) { 689 for (j = 0; j < columns; j++) { 690 fp = &list[j * lines + i]; 691 if (vflag) { 692 fprintf(stderr, "%*llu ", precision, 693 (unsigned long long)fp->fnum); 694 fp->len += precision + 1; 695 } 696 if (haveprefix) { 697 putc(fp->prefix, stderr); 698 fp->len++; 699 } 700 fprintf(stderr, "%s", fp->fname); 701 if (havepostfix) { 702 putc(fp->postfix, stderr); 703 fp->len++; 704 } 705 if (fp + lines >= endlist) { 706 fprintf(stderr, "\n"); 707 break; 708 } 709 for (w = fp->len; w < width; w++) 710 putc(' ', stderr); 711 } 712 } 713 } 714 715 /* 716 * Skip over directory entries that are not on the tape 717 * 718 * First have to get definition of a dirent. 719 */ 720 #undef DIRBLKSIZ 721 #include <dirent.h> 722 #undef d_ino 723 724 struct dirent * 725 glob_readdir(RST_DIR *dirp) 726 { 727 struct direct *dp; 728 static struct dirent adirent; 729 730 while ((dp = rst_readdir(dirp)) != NULL) { 731 if (!vflag && dp->d_fileno == WINO) 732 continue; 733 if (dflag || TSTINO(dp->d_fileno, dumpmap)) 734 break; 735 } 736 if (dp == NULL) 737 return (NULL); 738 adirent.d_fileno = dp->d_fileno; 739 adirent.d_namlen = dp->d_namlen; 740 memmove(adirent.d_name, dp->d_name, dp->d_namlen + 1); 741 return (&adirent); 742 } 743 744 /* 745 * Return st_mode information in response to stat or lstat calls 746 */ 747 static int 748 glob_stat(const char *name, struct stat *stp) 749 { 750 struct direct *dp; 751 752 dp = pathsearch(name); 753 if (dp == NULL || (!dflag && TSTINO(dp->d_fileno, dumpmap) == 0) || 754 (!vflag && dp->d_fileno == WINO)) 755 return (-1); 756 if (inodetype(dp->d_fileno) == NODE) 757 stp->st_mode = S_IFDIR; 758 else 759 stp->st_mode = S_IFREG; 760 return (0); 761 } 762 763 /* 764 * Comparison routine for qsort. 765 */ 766 static int 767 fcmp(const void *f1, const void *f2) 768 { 769 return (strcmp(((const struct afile *)f1)->fname, 770 ((const struct afile *)f2)->fname)); 771 } 772 773 /* 774 * respond to interrupts 775 */ 776 void 777 /*ARGSUSED*/ 778 onintr(int signo __unused) 779 { 780 if (command == 'i' && runshell) 781 longjmp(reset, 1); 782 if (reply("restore interrupted, continue") == FAIL) 783 exit(1); 784 } 785