11e80345cSdist /* 272f9a726Skarels * Copyright (c) 1983, 1987 Regents of the University of California. 3da55c904Sbostic * All rights reserved. 4da55c904Sbostic * 5*7dd1926fSelan * Redistribution and use in source and binary forms, with or without 6*7dd1926fSelan * modification, are permitted provided that the following conditions 7*7dd1926fSelan * are met: 8*7dd1926fSelan * 1. Redistributions of source code must retain the above copyright 9*7dd1926fSelan * notice, this list of conditions and the following disclaimer. 10*7dd1926fSelan * 2. Redistributions in binary form must reproduce the above copyright 11*7dd1926fSelan * notice, this list of conditions and the following disclaimer in the 12*7dd1926fSelan * documentation and/or other materials provided with the distribution. 13*7dd1926fSelan * 3. All advertising materials mentioning features or use of this software 14*7dd1926fSelan * must display the following acknowledgement: 15*7dd1926fSelan * This product includes software developed by the University of 16*7dd1926fSelan * California, Berkeley and its contributors. 17*7dd1926fSelan * 4. Neither the name of the University nor the names of its contributors 18*7dd1926fSelan * may be used to endorse or promote products derived from this software 19*7dd1926fSelan * without specific prior written permission. 20*7dd1926fSelan * 21*7dd1926fSelan * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22*7dd1926fSelan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23*7dd1926fSelan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24*7dd1926fSelan * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25*7dd1926fSelan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26*7dd1926fSelan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27*7dd1926fSelan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28*7dd1926fSelan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29*7dd1926fSelan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30*7dd1926fSelan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31*7dd1926fSelan * SUCH DAMAGE. 321e80345cSdist */ 331e80345cSdist 3487176300Sdonn #if defined(LIBC_SCCS) && !defined(lint) 35*7dd1926fSelan static char sccsid[] = "@(#)disklabel.c 5.19 (Berkeley) 3/19/92"; 36da55c904Sbostic #endif /* LIBC_SCCS and not lint */ 379876a848Ssam 3872f9a726Skarels #include <sys/param.h> 39d5da809dSbostic #include <sys/errno.h> 4072f9a726Skarels #include <sys/file.h> 4172f9a726Skarels #define DKTYPENAMES 4272f9a726Skarels #include <sys/disklabel.h> 43ec9487d9Sbostic #include <ufs/ffs/fs.h> 449876a848Ssam #include <stdio.h> 4572a6a662Sbostic #include <string.h> 46ae227ee3Sdonn #include <stdlib.h> 47ae227ee3Sdonn #include <unistd.h> 489876a848Ssam 49*7dd1926fSelan static int error __P((int)); 50*7dd1926fSelan static int gettype __P((char *, char **)); 519876a848Ssam 5272f9a726Skarels struct disklabel * 539876a848Ssam getdiskbyname(name) 54ae227ee3Sdonn const char *name; 559876a848Ssam { 5672f9a726Skarels static struct disklabel disk; 5772f9a726Skarels register struct disklabel *dp = &disk; 58ef743ec4Ssam register struct partition *pp; 59*7dd1926fSelan char *buf; 60*7dd1926fSelan char *db_array[2] = { _PATH_DISKTAB, 0 }; 61*7dd1926fSelan char *cp, *cq; /* can't be register */ 62af6dc062Smarc char p, max, psize[3], pbsize[3], 63af6dc062Smarc pfsize[3], poffset[3], ptype[3]; 6472f9a726Skarels u_long *dx; 659876a848Ssam 66*7dd1926fSelan if (cgetent(&buf, db_array, (char *) name) < 0) 67*7dd1926fSelan return NULL; 68*7dd1926fSelan 6972f9a726Skarels bzero((char *)&disk, sizeof(disk)); 70af6dc062Smarc /* 71af6dc062Smarc * typename 72af6dc062Smarc */ 7372f9a726Skarels cq = dp->d_typename; 7472f9a726Skarels cp = buf; 7572f9a726Skarels while (cq < dp->d_typename + sizeof(dp->d_typename) - 1 && 7672f9a726Skarels (*cq = *cp) && *cq != '|' && *cq != ':') 7772f9a726Skarels cq++, cp++; 7872f9a726Skarels *cq = '\0'; 79af6dc062Smarc /* 80af6dc062Smarc * boot name (optional) xxboot, bootxx 81af6dc062Smarc */ 82*7dd1926fSelan cgetstr(buf, "b0", &dp->d_boot0); 83*7dd1926fSelan cgetstr(buf, "b1", &dp->d_boot1); 84*7dd1926fSelan 85*7dd1926fSelan if (cgetstr(buf, "ty", &cq) > 0 && strcmp(cq, "removable") == 0) 8672f9a726Skarels dp->d_flags |= D_REMOVABLE; 8772f9a726Skarels else if (cq && strcmp(cq, "simulated") == 0) 8872f9a726Skarels dp->d_flags |= D_RAMDISK; 89*7dd1926fSelan if (cgetcap(buf, "sf", ':') != NULL) 9072f9a726Skarels dp->d_flags |= D_BADSECT; 91af6dc062Smarc 9272f9a726Skarels #define getnumdflt(field, dname, dflt) \ 93*7dd1926fSelan { long f; (field) = (cgetnum(buf, dname, &f) == -1) ? (dflt) : f; } 9472f9a726Skarels 9572f9a726Skarels getnumdflt(dp->d_secsize, "se", DEV_BSIZE); 96*7dd1926fSelan cgetnum(buf, "nt",(long *) &dp->d_ntracks); 97*7dd1926fSelan cgetnum(buf, "ns",(long *) &dp->d_nsectors); 98*7dd1926fSelan cgetnum(buf, "nc",(long *) &dp->d_ncylinders); 99*7dd1926fSelan 100*7dd1926fSelan if (cgetstr(buf, "dt", &cq) > 0) 10172f9a726Skarels dp->d_type = gettype(cq, dktypenames); 10272f9a726Skarels else 10372f9a726Skarels getnumdflt(dp->d_type, "dt", 0); 10472f9a726Skarels getnumdflt(dp->d_secpercyl, "sc", dp->d_nsectors * dp->d_ntracks); 10572f9a726Skarels getnumdflt(dp->d_secperunit, "su", dp->d_secpercyl * dp->d_ncylinders); 10672f9a726Skarels getnumdflt(dp->d_rpm, "rm", 3600); 10772f9a726Skarels getnumdflt(dp->d_interleave, "il", 1); 10872f9a726Skarels getnumdflt(dp->d_trackskew, "sk", 0); 10972f9a726Skarels getnumdflt(dp->d_cylskew, "cs", 0); 11072f9a726Skarels getnumdflt(dp->d_headswitch, "hs", 0); 11172f9a726Skarels getnumdflt(dp->d_trkseek, "ts", 0); 11272f9a726Skarels getnumdflt(dp->d_bbsize, "bs", BBSIZE); 11372f9a726Skarels getnumdflt(dp->d_sbsize, "sb", SBSIZE); 114ef743ec4Ssam strcpy(psize, "px"); 115ef743ec4Ssam strcpy(pbsize, "bx"); 116ef743ec4Ssam strcpy(pfsize, "fx"); 11772f9a726Skarels strcpy(poffset, "ox"); 11872f9a726Skarels strcpy(ptype, "tx"); 11972f9a726Skarels max = 'a' - 1; 12072f9a726Skarels pp = &dp->d_partitions[0]; 12172f9a726Skarels for (p = 'a'; p < 'a' + MAXPARTITIONS; p++, pp++) { 12272f9a726Skarels psize[1] = pbsize[1] = pfsize[1] = poffset[1] = ptype[1] = p; 123*7dd1926fSelan if (cgetnum(buf, psize,(long *) &pp->p_size) == -1) 12472f9a726Skarels pp->p_size = 0; 12572f9a726Skarels else { 126*7dd1926fSelan cgetnum(buf, poffset, (long *) &pp->p_offset); 12772f9a726Skarels getnumdflt(pp->p_fsize, pfsize, 0); 128*7dd1926fSelan if (pp->p_fsize) { 129*7dd1926fSelan cgetnum(buf, pbsize, (long *) &pp->p_frag); 130*7dd1926fSelan pp->p_frag /= pp->p_fsize; 131*7dd1926fSelan } 13272f9a726Skarels getnumdflt(pp->p_fstype, ptype, 0); 133*7dd1926fSelan if (pp->p_fstype == 0 && cgetstr(buf, ptype, &cq) > 0) 13472f9a726Skarels pp->p_fstype = gettype(cq, fstypenames); 13572f9a726Skarels max = p; 1369876a848Ssam } 13772f9a726Skarels } 13872f9a726Skarels dp->d_npartitions = max + 1 - 'a'; 1390a8a25dfSbostic (void)strcpy(psize, "dx"); 14072f9a726Skarels dx = dp->d_drivedata; 14172f9a726Skarels for (p = '0'; p < '0' + NDDATA; p++, dx++) { 14272f9a726Skarels psize[1] = p; 14372f9a726Skarels getnumdflt(*dx, psize, 0); 14472f9a726Skarels } 14572f9a726Skarels dp->d_magic = DISKMAGIC; 14672f9a726Skarels dp->d_magic2 = DISKMAGIC; 147*7dd1926fSelan free(buf); 1489876a848Ssam return (dp); 1499876a848Ssam } 1509876a848Ssam 151*7dd1926fSelan static int 15272f9a726Skarels gettype(t, names) 15372f9a726Skarels char *t; 15472f9a726Skarels char **names; 15572f9a726Skarels { 15672f9a726Skarels register char **nm; 15772f9a726Skarels 15872f9a726Skarels for (nm = names; *nm; nm++) 159c32170efSmckusick if (strcasecmp(t, *nm) == 0) 16072f9a726Skarels return (nm - names); 16172f9a726Skarels if (isdigit(*t)) 16272f9a726Skarels return (atoi(t)); 16372f9a726Skarels return (0); 16472f9a726Skarels } 16572f9a726Skarels 166*7dd1926fSelan static int 167d5da809dSbostic error(err) 168d5da809dSbostic int err; 169d5da809dSbostic { 170d5da809dSbostic char *p; 171d5da809dSbostic 172d5da809dSbostic (void)write(STDERR_FILENO, "disktab: ", 9); 173d5da809dSbostic (void)write(STDERR_FILENO, _PATH_DISKTAB, sizeof(_PATH_DISKTAB) - 1); 1747f83c103Sbostic (void)write(STDERR_FILENO, ": ", 2); 175d5da809dSbostic p = strerror(err); 176d5da809dSbostic (void)write(STDERR_FILENO, p, strlen(p)); 177d5da809dSbostic (void)write(STDERR_FILENO, "\n", 1); 178d5da809dSbostic } 179