4.3BSD - /usr/src/etc/restore/main.c

   1: /*
   2:  * Copyright (c) 1983 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: char copyright[] =
   9: "@(#) Copyright (c) 1983 Regents of the University of California.\n\
  10:  All rights reserved.\n";
  11: #endif not lint
  12: 
  13: #ifndef lint
  14: static char sccsid[] = "@(#)main.c	5.3 (Berkeley) 4/23/86";
  15: #endif not lint
  16: 
  17: /*
  18:  *	Modified to recursively extract all files within a subtree
  19:  *	(supressed by the h option) and recreate the heirarchical
  20:  *	structure of that subtree and move extracted files to their
  21:  *	proper homes (supressed by the m option).
  22:  *	Includes the s (skip files) option for use with multiple
  23:  *	dumps on a single tape.
  24:  *	8/29/80		by Mike Litzkow
  25:  *
  26:  *	Modified to work on the new file system and to recover from
  27:  *	tape read errors.
  28:  *	1/19/82		by Kirk McKusick
  29:  *
  30:  *	Full incremental restore running entirely in user code and
  31:  *	interactive tape browser.
  32:  *	1/19/83		by Kirk McKusick
  33:  */
  34: 
  35: #include "restore.h"
  36: #include <protocols/dumprestore.h>
  37: #include <signal.h>
  38: 
  39: int bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0;
  40: int hflag = 1, mflag = 1;
  41: char    command = '\0';
  42: long    dumpnum = 1;
  43: long    volno = 0;
  44: long    ntrec;
  45: char    *dumpmap;
  46: char    *clrimap;
  47: ino_t   maxino;
  48: time_t  dumptime;
  49: time_t  dumpdate;
  50: FILE    *terminal;
  51: 
  52: main(argc, argv)
  53:     int argc;
  54:     char *argv[];
  55: {
  56:     register char *cp;
  57:     ino_t ino;
  58:     char *inputdev = "/dev/rmt8";
  59:     char *symtbl = "./restoresymtable";
  60:     char name[MAXPATHLEN];
  61:     int (*signal())();
  62:     extern int onintr();
  63: 
  64:     if (signal(SIGINT, onintr) == SIG_IGN)
  65:         (void) signal(SIGINT, SIG_IGN);
  66:     if (signal(SIGTERM, onintr) == SIG_IGN)
  67:         (void) signal(SIGTERM, SIG_IGN);
  68:     setlinebuf(stderr);
  69:     if (argc < 2) {
  70: usage:
  71:         fprintf(stderr, "Usage:\n%s%s%s%s%s",
  72:             "\trestore tfhsvy [file file ...]\n",
  73:             "\trestore xfhmsvy [file file ...]\n",
  74:             "\trestore ifhmsvy\n",
  75:             "\trestore rfsvy\n",
  76:             "\trestore Rfsvy\n");
  77:         done(1);
  78:     }
  79:     argv++;
  80:     argc -= 2;
  81:     command = '\0';
  82:     for (cp = *argv++; *cp; cp++) {
  83:         switch (*cp) {
  84:         case '-':
  85:             break;
  86:         case 'c':
  87:             cvtflag++;
  88:             break;
  89:         case 'd':
  90:             dflag++;
  91:             break;
  92:         case 'h':
  93:             hflag = 0;
  94:             break;
  95:         case 'm':
  96:             mflag = 0;
  97:             break;
  98:         case 'v':
  99:             vflag++;
 100:             break;
 101:         case 'y':
 102:             yflag++;
 103:             break;
 104:         case 'f':
 105:             if (argc < 1) {
 106:                 fprintf(stderr, "missing device specifier\n");
 107:                 done(1);
 108:             }
 109:             inputdev = *argv++;
 110:             argc--;
 111:             break;
 112:         case 'b':
 113:             /*
 114: 			 * change default tape blocksize
 115: 			 */
 116:             bflag++;
 117:             if (argc < 1) {
 118:                 fprintf(stderr, "missing block size\n");
 119:                 done(1);
 120:             }
 121:             ntrec = atoi(*argv++);
 122:             if (ntrec <= 0) {
 123:                 fprintf(stderr, "Block size must be a positive integer\n");
 124:                 done(1);
 125:             }
 126:             argc--;
 127:             break;
 128:         case 's':
 129:             /*
 130: 			 * dumpnum (skip to) for multifile dump tapes
 131: 			 */
 132:             if (argc < 1) {
 133:                 fprintf(stderr, "missing dump number\n");
 134:                 done(1);
 135:             }
 136:             dumpnum = atoi(*argv++);
 137:             if (dumpnum <= 0) {
 138:                 fprintf(stderr, "Dump number must be a positive integer\n");
 139:                 done(1);
 140:             }
 141:             argc--;
 142:             break;
 143:         case 't':
 144:         case 'R':
 145:         case 'r':
 146:         case 'x':
 147:         case 'i':
 148:             if (command != '\0') {
 149:                 fprintf(stderr,
 150:                     "%c and %c are mutually exclusive\n",
 151:                     *cp, command);
 152:                 goto usage;
 153:             }
 154:             command = *cp;
 155:             break;
 156:         default:
 157:             fprintf(stderr, "Bad key character %c\n", *cp);
 158:             goto usage;
 159:         }
 160:     }
 161:     if (command == '\0') {
 162:         fprintf(stderr, "must specify i, t, r, R, or x\n");
 163:         goto usage;
 164:     }
 165:     setinput(inputdev);
 166:     if (argc == 0) {
 167:         argc = 1;
 168:         *--argv = ".";
 169:     }
 170:     switch (command) {
 171:     /*
 172: 	 * Interactive mode.
 173: 	 */
 174:     case 'i':
 175:         setup();
 176:         extractdirs(1);
 177:         initsymtable((char *)0);
 178:         runcmdshell();
 179:         done(0);
 180:     /*
 181: 	 * Incremental restoration of a file system.
 182: 	 */
 183:     case 'r':
 184:         setup();
 185:         if (dumptime > 0) {
 186:             /*
 187: 			 * This is an incremental dump tape.
 188: 			 */
 189:             vprintf(stdout, "Begin incremental restore\n");
 190:             initsymtable(symtbl);
 191:             extractdirs(1);
 192:             removeoldleaves();
 193:             vprintf(stdout, "Calculate node updates.\n");
 194:             treescan(".", ROOTINO, nodeupdates);
 195:             findunreflinks();
 196:             removeoldnodes();
 197:         } else {
 198:             /*
 199: 			 * This is a level zero dump tape.
 200: 			 */
 201:             vprintf(stdout, "Begin level 0 restore\n");
 202:             initsymtable((char *)0);
 203:             extractdirs(1);
 204:             vprintf(stdout, "Calculate extraction list.\n");
 205:             treescan(".", ROOTINO, nodeupdates);
 206:         }
 207:         createleaves(symtbl);
 208:         createlinks();
 209:         setdirmodes();
 210:         checkrestore();
 211:         if (dflag) {
 212:             vprintf(stdout, "Verify the directory structure\n");
 213:             treescan(".", ROOTINO, verifyfile);
 214:         }
 215:         dumpsymtable(symtbl, (long)1);
 216:         done(0);
 217:     /*
 218: 	 * Resume an incremental file system restoration.
 219: 	 */
 220:     case 'R':
 221:         initsymtable(symtbl);
 222:         skipmaps();
 223:         skipdirs();
 224:         createleaves(symtbl);
 225:         createlinks();
 226:         setdirmodes();
 227:         checkrestore();
 228:         dumpsymtable(symtbl, (long)1);
 229:         done(0);
 230:     /*
 231: 	 * List contents of tape.
 232: 	 */
 233:     case 't':
 234:         setup();
 235:         extractdirs(0);
 236:         initsymtable((char *)0);
 237:         while (argc--) {
 238:             canon(*argv++, name);
 239:             ino = dirlookup(name);
 240:             if (ino == 0)
 241:                 continue;
 242:             treescan(name, ino, listfile);
 243:         }
 244:         done(0);
 245:     /*
 246: 	 * Batch extraction of tape contents.
 247: 	 */
 248:     case 'x':
 249:         setup();
 250:         extractdirs(1);
 251:         initsymtable((char *)0);
 252:         while (argc--) {
 253:             canon(*argv++, name);
 254:             ino = dirlookup(name);
 255:             if (ino == 0)
 256:                 continue;
 257:             if (mflag)
 258:                 pathcheck(name);
 259:             treescan(name, ino, addfile);
 260:         }
 261:         createfiles();
 262:         createlinks();
 263:         setdirmodes();
 264:         if (dflag)
 265:             checkrestore();
 266:         done(0);
 267:     }
 268: }

Defined functions

Defined variables