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