initial import of NetBSD tree

1 files changed, 195 insertions, 0 deletions

diff --git a/lib/libc/gen/disklabel.c b/lib/libc/gen/disklabel.c
new file mode 100644
index 00000000000..6deaa1b4fa5
--- /dev/null
+++ b/lib/libc/gen/disklabel.c
@@ -0,0 +1,195 @@
+/*	$NetBSD: disklabel.c,v 1.11 1995/06/07 13:14:09 cgd Exp $	*/
+
+/*
+ * 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)disklabel.c	8.1 (Berkeley) 6/4/93";
+#else
+static char rcsid[] = "$NetBSD: disklabel.c,v 1.11 1995/06/07 13:14:09 cgd Exp $";
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#define DKTYPENAMES
+#include <sys/disklabel.h>
+#include <ufs/ffs/fs.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static void	error __P((int));
+static int	gettype __P((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; }
+#define	getnum(field, dname) \
+	{ long f; cgetnum(buf, dname, &f); field = f; }
+
+	getnumdflt(dp->d_secsize, "se", DEV_BSIZE);
+	getnum(dp->d_ntracks, "nt");
+	getnum(dp->d_nsectors, "ns");
+	getnum(dp->d_ncylinders, "nc");
+
+	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++) {
+		long f;
+
+		psize[1] = pbsize[1] = pfsize[1] = poffset[1] = ptype[1] = p;
+		if (cgetnum(buf, psize, &f) == -1)
+			pp->p_size = 0;
+		else {
+			pp->p_size = f;
+			getnum(pp->p_offset, poffset);
+			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);
+}
+
+static void
+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);
+}