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1.1 ! root 1: #ifndef lint ! 2: static char sccsid[] = "@(#)disklabel.c 1.2 (Berkeley/CCI) 6/7/88"; ! 3: #endif ! 4: ! 5: #include "vdfmt.h" ! 6: #include "cmd.h" ! 7: ! 8: int lab_help(); ! 9: ! 10: /* ! 11: ** ! 12: */ ! 13: ! 14: get_drive_type(ctlr, drive, op_mask) ! 15: int ctlr, drive, op_mask; ! 16: { ! 17: int tokens[20]; ! 18: char line[132]; ! 19: int savedevflags = 0; ! 20: register struct disklabel *lp; ! 21: struct disklabel *plp, *getdiskbyname(), *promptfordisk(), *findproto(); ! 22: ! 23: lp = lab; ! 24: if (lp->d_typename[0] == 0) { ! 25: print("Read label from drive %d, controller %d? ", drive, ctlr); ! 26: get_string_cmd(line, lab_help); ! 27: if (kill_processes == true) ! 28: return; ! 29: if (line[0] == 'y' || line[0] == 'Y') { ! 30: lp->d_secsize = 512; ! 31: lp->d_nsectors = 66; ! 32: lp->d_ntracks = 23; ! 33: lp->d_ncylinders = 850; ! 34: lp->d_secpercyl = 66*23; ! 35: if (D_INFO->alive != u_true) ! 36: spin_up_drive(); ! 37: savedevflags = lab->d_devflags; ! 38: if (readlabel()) { ! 39: lp->d_devflags = savedevflags; ! 40: lp->d_pat = 0; /* this can't be what we want */ ! 41: goto check; ! 42: } ! 43: lab->d_devflags = savedevflags; ! 44: lp->d_typename[0] = 0; ! 45: } ! 46: } ! 47: for (;;) { ! 48: print("Drive type for controller %d, drive %d? ", ctlr, drive); ! 49: if (lp->d_typename[0] != 0) ! 50: printf("(%s) ", lp->d_typename); ! 51: get_string_cmd(line, lab_help); ! 52: if (kill_processes == true) ! 53: return; ! 54: if (lp->d_typename[0] != 0 && ! 55: (line[0] == 0 || strcmp(lp->d_typename, line) == 0)) ! 56: break; ! 57: if (lp = findproto(line)) ! 58: break;; ! 59: if (lp = getdiskbyname(line)) ! 60: break; ! 61: if (lp = promptfordisk(line)) ! 62: break; ! 63: if (kill_processes == true) ! 64: return; ! 65: lp = lab; ! 66: } ! 67: check: ! 68: plp = findproto(lp->d_typename); ! 69: while (op_mask & FORMAT_OP && lp->d_traksize == 0) { ! 70: print("number of bytes per track"); ! 71: if (plp && plp->d_traksize) ! 72: printf(" (%d)", plp->d_traksize); ! 73: printf(": "); ! 74: get_string_cmd(line, lab_help); ! 75: if (kill_processes == true) ! 76: return; ! 77: if (line[0] == 0) { ! 78: if (plp->d_traksize == 0) ! 79: print("no default value\n"); ! 80: lp->d_traksize = plp->d_traksize; ! 81: } else ! 82: lp->d_traksize = atol(line); ! 83: } ! 84: print("Drive geometry for controller %d, drive %d (%s):\n", ! 85: ctlr, drive, lp->d_typename); ! 86: print(" sector size %d; %d sectors, %d tracks, %d cylinders\n", ! 87: lp->d_secsize, lp->d_nsectors, lp->d_ntracks, lp->d_ncylinders); ! 88: if (lp->d_pat == 0 && op_mask & (FORMAT_OP | VERIFY_OP)) { ! 89: extern struct flawpat defpats, cdcpats; ! 90: ! 91: print("media patterns for verify (default or cdc): "); ! 92: get_string_cmd(line, lab_help); ! 93: if (kill_processes == true) ! 94: return; ! 95: if (strcmp(line, "cdc") == 0) ! 96: lp->d_pat = (long) &cdcpats; ! 97: else ! 98: lp->d_pat = (long) &defpats; ! 99: } ! 100: if (lab->d_cylskew == -1) ! 101: lab->d_cylskew = 0; ! 102: if (lab->d_trackskew == -1) ! 103: lab->d_trackskew = 0; ! 104: if (lab->d_sparespertrack == -1) ! 105: lab->d_sparespertrack = 0; ! 106: if (lp != lab) { ! 107: *lab = *lp; ! 108: if (savedevflags) ! 109: lab->d_devflags = savedevflags; ! 110: } ! 111: configure_drive(1); /* set new parameters */ ! 112: } ! 113: ! 114: struct disklabel * ! 115: findproto(name) ! 116: char *name; ! 117: { ! 118: int count; ! 119: ! 120: if (C_INFO->type == VDTYPE_VDDC) ! 121: count = smddrives; ! 122: else ! 123: count = 0; ! 124: for (; count < ndrives; count++) ! 125: if (strcmp(vdproto[count].d_typename, name) == 0) ! 126: return (&vdproto[count]); ! 127: return ((struct disklabel *) 0); ! 128: } ! 129: ! 130: struct disklabel disk; ! 131: ! 132: struct field { ! 133: char *f_name; ! 134: char *f_defaults; ! 135: u_long *f_location; ! 136: } fields[] = { ! 137: { "sector size", "512", &disk.d_secsize }, ! 138: { "#sectors/track", 0, &disk.d_nsectors }, ! 139: { "#tracks/cylinder", 0, &disk.d_ntracks }, ! 140: { "#cylinders", 0, &disk.d_ncylinders }, ! 141: { "#bytes/track", 0, &disk.d_traksize }, ! 142: { 0, 0, 0 }, ! 143: }; ! 144: ! 145: struct disklabel * ! 146: promptfordisk(name) ! 147: char *name; ! 148: { ! 149: register struct disklabel *dp = &disk; ! 150: register struct field *fp; ! 151: register i; ! 152: char buf[132], *cp; ! 153: ! 154: print("%s: unknown drive type\n", name); ! 155: if (get_yes_no("Enter drive parameters") == false) ! 156: return ((struct disklabel *)0); ! 157: ! 158: strncpy(dp->d_typename, name, sizeof(dp->d_typename)); ! 159: dp->d_type = DTYPE_SMD; ! 160: dp->d_flags = 0; ! 161: ! 162: print("(type <cr> to get default value, if only one)\n"); ! 163: for (fp = fields; fp->f_name != NULL; fp++) { ! 164: again: ! 165: print("%s ", fp->f_name); ! 166: if (fp->f_defaults != NULL) ! 167: printf("(%s)", fp->f_defaults); ! 168: printf("? "); ! 169: get_string_cmd(buf, lab_help); ! 170: if (kill_processes == true) ! 171: return ((struct disklabel *)0); ! 172: cp = buf; ! 173: if (*cp == '\0') { ! 174: if (fp->f_defaults == NULL) { ! 175: print("no default value\n"); ! 176: goto again; ! 177: } ! 178: cp = fp->f_defaults; ! 179: } ! 180: *fp->f_location = atol(cp); ! 181: if (*fp->f_location == 0) { ! 182: print("%s: bad value\n", cp); ! 183: goto again; ! 184: } ! 185: } ! 186: print("sectors/cylinder (%d)? ", dp->d_nsectors * dp->d_ntracks); ! 187: get_string_cmd(buf, lab_help); ! 188: if (kill_processes == true) ! 189: return ((struct disklabel *)0); ! 190: if (buf[0] == 0) ! 191: dp->d_secpercyl = dp->d_nsectors * dp->d_ntracks; ! 192: else ! 193: dp->d_secpercyl = atol(buf); ! 194: return (dp); ! 195: } ! 196: ! 197: lab_help() ! 198: { ! 199: indent(); ! 200: print("Entering drive type and parameters:\n"); ! 201: indent(); ! 202: print("Answer each question with a number or name, as appropriate.\n"); ! 203: print("Questions with defaults show them in (parentheses);\n"); ! 204: print("press return to accept the default.\n\n"); ! 205: exdent(1); ! 206: print("Other commands available:\n"); ! 207: indent(); ! 208: print("QUIT - abort current operation\n"); ! 209: exdent(2); ! 210: } ! 211: ! 212: static char labelsector[VD_MAXSECSIZE]; ! 213: /* ! 214: * Fetch disklabel for disk. ! 215: */ ! 216: readlabel() ! 217: { ! 218: register struct disklabel *lp; ! 219: ! 220: bzero(labelsector, sizeof(labelsector)); ! 221: if (vread(LABELSECTOR, labelsector, 1) < 1) ! 222: return (0); ! 223: for (lp = (struct disklabel *)labelsector; ! 224: lp <= (struct disklabel *)(labelsector+VD_MAXSECSIZE - sizeof(*lp)); ! 225: lp = (struct disklabel *)((char *)lp + 16)) ! 226: if (lp->d_magic == DISKMAGIC && ! 227: lp->d_magic2 == DISKMAGIC) ! 228: break; ! 229: if (lp > (struct disklabel *)(labelsector+VD_MAXSECSIZE-sizeof(*lp)) || ! 230: lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC || ! 231: dkcksum(lp) != 0) { ! 232: print("Disk is unlabeled.\n"); ! 233: return (0); ! 234: } ! 235: *lab = *lp; ! 236: return (1); ! 237: } ! 238: ! 239: writelabel() ! 240: { ! 241: register struct disklabel *lp = lab; ! 242: ! 243: lp->d_magic = DISKMAGIC; ! 244: lp->d_magic2 = DISKMAGIC; ! 245: lp->d_checksum = 0; ! 246: lp->d_checksum = dkcksum(lp); ! 247: if (vwrite(LABELSECTOR, labelsector, 1) != 1) ! 248: printf("error writing disk label\n"); ! 249: }
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