1 /* 2 * Copyright (c) 2007 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 /* 35 * Copyright (c) 1983, 1987, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 */ 66 /* 67 * $DragonFly: src/lib/libc/gen/disktab.c,v 1.11 2007/06/17 23:50:13 dillon Exp $ 68 * @(#)disklabel.c 8.2 (Berkeley) 5/3/95 69 * $FreeBSD: src/lib/libc/gen/disklabel.c,v 1.9.2.1 2001/03/05 08:40:47 obrien 70 */ 71 72 #include <sys/param.h> 73 #define DKTYPENAMES 74 #include <sys/disklabel.h> 75 #include <sys/dtype.h> 76 #include <vfs/ufs/dinode.h> 77 #include <vfs/ufs/fs.h> 78 79 #include <ctype.h> 80 #include <stdio.h> 81 #include <stdlib.h> 82 #include <stdarg.h> 83 #include <unistd.h> 84 #include <string.h> 85 #include <disktab.h> 86 87 static int gettype (const char *, const char **); 88 89 struct disktab * 90 getdisktabbyname(const char *name) 91 { 92 static struct disktab dtab; 93 struct disktab *dt = &dtab; 94 struct dt_partition *pp; 95 char *buf; 96 char *db_array[2] = { _PATH_DISKTAB, 0 }; 97 char *cp, *cq; /* can't be register */ 98 char p, max, psize[3], pbsize[3], 99 pfsize[3], poffset[3], ptype[3]; 100 #if 0 101 u_int32_t *dx; 102 #endif 103 104 if (cgetent(&buf, db_array, (char *)name) < 0) 105 return NULL; 106 107 bzero(dt, sizeof(*dt)); 108 /* 109 * typename 110 */ 111 cq = dt->d_typename; 112 cp = buf; 113 while (cq < dt->d_typename + sizeof(dt->d_typename) - 1 && 114 (*cq = *cp) && *cq != '|' && *cq != ':') 115 cq++, cp++; 116 *cq = '\0'; 117 118 #define getnumdflt(field, dname, dflt) \ 119 { long f; (field) = (cgetnum(buf, dname, &f) == -1) ? (dflt) : f; } 120 121 getnumdflt(dt->d_media_blksize, "se", DEV_BSIZE); 122 getnumdflt(dt->d_nheads, "nt", 0); 123 getnumdflt(dt->d_secpertrack, "ns", 0); 124 getnumdflt(dt->d_ncylinders, "nc", 0); 125 126 if (cgetstr(buf, "dt", &cq) > 0) 127 dt->d_typeid = gettype(cq, dktypenames); 128 else 129 getnumdflt(dt->d_typeid, "dt", 0); 130 getnumdflt(dt->d_secpercyl, "sc", dt->d_secpertrack * dt->d_nheads); 131 getnumdflt(dt->d_media_blocks, "su", dt->d_secpercyl * dt->d_ncylinders); 132 getnumdflt(dt->d_rpm, "rm", 3600); 133 getnumdflt(dt->d_interleave, "il", 1); 134 getnumdflt(dt->d_trackskew, "sk", 0); 135 getnumdflt(dt->d_cylskew, "cs", 0); 136 getnumdflt(dt->d_headswitch, "hs", 0); 137 getnumdflt(dt->d_trkseek, "ts", 0); 138 getnumdflt(dt->d_bbsize, "bs", BBSIZE); 139 getnumdflt(dt->d_sbsize, "sb", SBSIZE); 140 strcpy(psize, "px"); 141 strcpy(pbsize, "bx"); 142 strcpy(pfsize, "fx"); 143 strcpy(poffset, "ox"); 144 strcpy(ptype, "tx"); 145 max = 'a' - 1; 146 pp = &dt->d_partitions[0]; 147 for (p = 'a'; p < 'a' + MAXDTPARTITIONS; p++, pp++) { 148 long l; 149 psize[1] = pbsize[1] = pfsize[1] = poffset[1] = ptype[1] = p; 150 if (cgetnum(buf, psize, &l) == -1) { 151 pp->p_size = 0; 152 } else { 153 pp->p_size = l; 154 cgetnum(buf, poffset, &l); 155 pp->p_offset = l; 156 getnumdflt(pp->p_fsize, pfsize, 0); 157 if (pp->p_fsize) { 158 long bsize; 159 160 if (cgetnum(buf, pbsize, &bsize) == 0) 161 pp->p_frag = bsize / pp->p_fsize; 162 else 163 pp->p_frag = 8; 164 } 165 getnumdflt(pp->p_fstype, ptype, 0); 166 if (pp->p_fstype == 0 && cgetstr(buf, ptype, &cq) > 0) { 167 pp->p_fstype = gettype(cq, fstypenames); 168 snprintf(pp->p_fstypestr, 169 sizeof(pp->p_fstypestr), "%s", cq); 170 } else if (pp->p_fstype >= 0 && 171 pp->p_fstype < FSMAXTYPES) { 172 snprintf(pp->p_fstypestr, 173 sizeof(pp->p_fstypestr), "%s", 174 fstypenames[pp->p_fstype]); 175 } 176 max = p; 177 } 178 } 179 dt->d_npartitions = max + 1 - 'a'; 180 #if 0 181 strcpy(psize, "dx"); 182 dx = dt->d_drivedata; 183 for (p = '0'; p < '0' + NDDATA; p++, dx++) { 184 psize[1] = p; 185 getnumdflt(*dx, psize, 0); 186 } 187 dp->d_magic = DISKMAGIC; 188 dp->d_magic2 = DISKMAGIC; 189 #endif 190 free(buf); 191 return (dt); 192 } 193 194 static int 195 gettype(const char *t, const char **names) 196 { 197 const char **nm; 198 199 for (nm = names; *nm; nm++) 200 if (strcasecmp(t, *nm) == 0) 201 return (nm - names); 202 if (isdigit((unsigned char)*t)) 203 return (atoi(t)); 204 return (0); 205 } 206