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+++ Libc/Libc-498/gen/disklabel.c
@@ -0,0 +1,209 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ * Copyright (c) 1983, 1987, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+#include <sys/param.h>
+#include <sys/time.h>
+#define DKTYPENAMES
+#include <sys/disklabel.h>
+#include <ufs/ufs/dinode.h>
+#include <ufs/ffs/fs.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#ifdef unused
+static int error(int);
+#endif // unused
+static int gettype(char *, char **);
+
+struct disklabel *
+getdiskbyname(name)
+ const char *name;
+{
+ static struct disklabel disk;
+ register struct disklabel *dp = &disk;
+ register struct partition *pp;
+ char *buf;
+ char *db_array[2] = { _PATH_DISKTAB, 0 };
+ char *cp, *cq; /* can't be register */
+ char p, max, psize[3], pbsize[3],
+ pfsize[3], poffset[3], ptype[3];
+ u_int32_t *dx;
+
+ if (cgetent(&buf, db_array, (char *) name) < 0)
+ return NULL;
+
+ bzero((char *)&disk, sizeof(disk));
+ /*
+ * typename
+ */
+ cq = dp->d_typename;
+ cp = buf;
+ while (cq < dp->d_typename + sizeof(dp->d_typename) - 1 &&
+ (*cq = *cp) && *cq != '|' && *cq != ':')
+ cq++, cp++;
+ *cq = '\0';
+ /*
+ * boot name (optional) xxboot, bootxx
+ */
+ cgetstr(buf, "b0", &dp->d_boot0);
+ cgetstr(buf, "b1", &dp->d_boot1);
+
+ if (cgetstr(buf, "ty", &cq) > 0 && strcmp(cq, "removable") == 0)
+ dp->d_flags |= D_REMOVABLE;
+ else if (cq && strcmp(cq, "simulated") == 0)
+ dp->d_flags |= D_RAMDISK;
+ if (cgetcap(buf, "sf", ':') != NULL)
+ dp->d_flags |= D_BADSECT;
+
+#define getnumdflt(field, dname, dflt) \
+ { long f; (field) = (cgetnum(buf, dname, &f) == -1) ? (dflt) : f; }
+
+ getnumdflt(dp->d_secsize, "se", DEV_BSIZE);
+ cgetnum(buf, "nt",(long *) &dp->d_ntracks);
+ cgetnum(buf, "ns",(long *) &dp->d_nsectors);
+ cgetnum(buf, "nc",(long *) &dp->d_ncylinders);
+
+ if (cgetstr(buf, "dt", &cq) > 0)
+ dp->d_type = gettype(cq, dktypenames);
+ else
+ getnumdflt(dp->d_type, "dt", 0);
+ getnumdflt(dp->d_secpercyl, "sc", dp->d_nsectors * dp->d_ntracks);
+ getnumdflt(dp->d_secperunit, "su", dp->d_secpercyl * dp->d_ncylinders);
+ getnumdflt(dp->d_rpm, "rm", 3600);
+ getnumdflt(dp->d_interleave, "il", 1);
+ getnumdflt(dp->d_trackskew, "sk", 0);
+ getnumdflt(dp->d_cylskew, "cs", 0);
+ getnumdflt(dp->d_headswitch, "hs", 0);
+ getnumdflt(dp->d_trkseek, "ts", 0);
+ getnumdflt(dp->d_bbsize, "bs", BBSIZE);
+ getnumdflt(dp->d_sbsize, "sb", SBSIZE);
+ strcpy(psize, "px");
+ strcpy(pbsize, "bx");
+ strcpy(pfsize, "fx");
+ strcpy(poffset, "ox");
+ strcpy(ptype, "tx");
+ max = 'a' - 1;
+ pp = &dp->d_partitions[0];
+ for (p = 'a'; p < 'a' + MAXPARTITIONS; p++, pp++) {
+ psize[1] = pbsize[1] = pfsize[1] = poffset[1] = ptype[1] = p;
+ if (cgetnum(buf, psize,(long *) &pp->p_size) == -1)
+ pp->p_size = 0;
+ else {
+ cgetnum(buf, poffset, (long *) &pp->p_offset);
+ getnumdflt(pp->p_fsize, pfsize, 0);
+ if (pp->p_fsize) {
+ long bsize;
+
+ if (cgetnum(buf, pbsize, &bsize) == 0)
+ pp->p_frag = bsize / pp->p_fsize;
+ else
+ pp->p_frag = 8;
+ }
+ getnumdflt(pp->p_fstype, ptype, 0);
+ if (pp->p_fstype == 0 && cgetstr(buf, ptype, &cq) > 0)
+ pp->p_fstype = gettype(cq, fstypenames);
+ max = p;
+ }
+ }
+ dp->d_npartitions = max + 1 - 'a';
+ (void)strcpy(psize, "dx");
+ dx = dp->d_drivedata;
+ for (p = '0'; p < '0' + NDDATA; p++, dx++) {
+ psize[1] = p;
+ getnumdflt(*dx, psize, 0);
+ }
+ dp->d_magic = DISKMAGIC;
+ dp->d_magic2 = DISKMAGIC;
+ free(buf);
+ return (dp);
+}
+
+static int
+gettype(t, names)
+ char *t;
+ char **names;
+{
+ register char **nm;
+
+ for (nm = names; *nm; nm++)
+ if (strcasecmp(t, *nm) == 0)
+ return (nm - names);
+ if (isdigit(*t))
+ return (atoi(t));
+ return (0);
+}
+
+#ifdef unused
+static int
+error(err)
+ int err;
+{
+ char *p;
+
+ (void)write(STDERR_FILENO, "disktab: ", 9);
+ (void)write(STDERR_FILENO, _PATH_DISKTAB, sizeof(_PATH_DISKTAB) - 1);
+ (void)write(STDERR_FILENO, ": ", 2);
+ p = strerror(err);
+ (void)write(STDERR_FILENO, p, strlen(p));
+ (void)write(STDERR_FILENO, "\n", 1);
+}
+#endif // unused