2 * Copyright (c) 1983, 1987, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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15 * This product includes software developed by the University of
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33 * @(#)disklabel.c 8.2 (Berkeley) 5/3/95
34 * $FreeBSD: src/lib/libc/gen/disklabel.c,v 1.9.2.1 2001/03/05 08:40:47 obrien Exp $
35 * $DragonFly: src/lib/libcr/gen/Attic/disklabel.c,v 1.6 2005/03/16 17:54:59 y0netan1 Exp $
38 #include <sys/param.h>
40 #include <sys/disklabel.h>
41 #include <vfs/ufs/dinode.h>
42 #include <vfs/ufs/fs.h>
51 static int gettype (const char *, const char **);
57 static struct disklabel disk;
58 struct disklabel *dp = &disk;
61 char *db_array[2] = { _PATH_DISKTAB, 0 };
62 char *cp, *cq; /* can't be register */
63 char p, max, psize[3], pbsize[3],
64 pfsize[3], poffset[3], ptype[3];
67 if (cgetent(&buf, db_array, (char *) name) < 0)
70 bzero((char *)&disk, sizeof(disk));
76 while (cq < dp->d_typename + sizeof(dp->d_typename) - 1 &&
77 (*cq = *cp) && *cq != '|' && *cq != ':')
81 * boot name (optional) xxboot, bootxx
83 cgetstr(buf, "b0", &dp->d_boot0);
84 cgetstr(buf, "b1", &dp->d_boot1);
86 if (cgetstr(buf, "ty", &cq) > 0 && strcmp(cq, "removable") == 0)
87 dp->d_flags |= D_REMOVABLE;
88 else if (cq && strcmp(cq, "simulated") == 0)
89 dp->d_flags |= D_RAMDISK;
90 if (cgetcap(buf, "sf", ':') != NULL)
91 dp->d_flags |= D_BADSECT;
93 #define getnumdflt(field, dname, dflt) \
94 { long f; (field) = (cgetnum(buf, dname, &f) == -1) ? (dflt) : f; }
96 getnumdflt(dp->d_secsize, "se", DEV_BSIZE);
97 getnumdflt(dp->d_ntracks, "nt", 0);
98 getnumdflt(dp->d_nsectors, "ns", 0);
99 getnumdflt(dp->d_ncylinders, "nc", 0);
101 if (cgetstr(buf, "dt", &cq) > 0)
102 dp->d_type = gettype(cq, dktypenames);
104 getnumdflt(dp->d_type, "dt", 0);
105 getnumdflt(dp->d_secpercyl, "sc", dp->d_nsectors * dp->d_ntracks);
106 getnumdflt(dp->d_secperunit, "su", dp->d_secpercyl * dp->d_ncylinders);
107 getnumdflt(dp->d_rpm, "rm", 3600);
108 getnumdflt(dp->d_interleave, "il", 1);
109 getnumdflt(dp->d_trackskew, "sk", 0);
110 getnumdflt(dp->d_cylskew, "cs", 0);
111 getnumdflt(dp->d_headswitch, "hs", 0);
112 getnumdflt(dp->d_trkseek, "ts", 0);
113 getnumdflt(dp->d_bbsize, "bs", BBSIZE);
114 getnumdflt(dp->d_sbsize, "sb", SBSIZE);
116 strcpy(pbsize, "bx");
117 strcpy(pfsize, "fx");
118 strcpy(poffset, "ox");
121 pp = &dp->d_partitions[0];
122 for (p = 'a'; p < 'a' + MAXPARTITIONS; p++, pp++) {
124 psize[1] = pbsize[1] = pfsize[1] = poffset[1] = ptype[1] = p;
125 if (cgetnum(buf, psize, &l) == -1)
129 cgetnum(buf, poffset, &l);
131 getnumdflt(pp->p_fsize, pfsize, 0);
135 if (cgetnum(buf, pbsize, &bsize) == 0)
136 pp->p_frag = bsize / pp->p_fsize;
140 getnumdflt(pp->p_fstype, ptype, 0);
141 if (pp->p_fstype == 0 && cgetstr(buf, ptype, &cq) > 0)
142 pp->p_fstype = gettype(cq, fstypenames);
146 dp->d_npartitions = max + 1 - 'a';
147 (void)strcpy(psize, "dx");
148 dx = dp->d_drivedata;
149 for (p = '0'; p < '0' + NDDATA; p++, dx++) {
151 getnumdflt(*dx, psize, 0);
153 dp->d_magic = DISKMAGIC;
154 dp->d_magic2 = DISKMAGIC;
160 gettype(const char *t, const char **names)
164 for (nm = names; *nm; nm++)
165 if (strcasecmp(t, *nm) == 0)
167 if (isdigit((unsigned char)*t))