initial import of NetBSD tree

3 files changed, 285 insertions, 0 deletions

diff --git a/usr.sbin/vnconfig/Makefile b/usr.sbin/vnconfig/Makefile
new file mode 100644
index 00000000000..fb32170254d
--- /dev/null
+++ b/usr.sbin/vnconfig/Makefile
@@ -0,0 +1,6 @@
+#	$Id: Makefile,v 1.1 1995/10/18 08:48:31 deraadt Exp $
+
+PROG=		vnconfig
+MAN=		vnconfig.8
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/vnconfig/vnconfig.8 b/usr.sbin/vnconfig/vnconfig.8
new file mode 100644
index 00000000000..b01df7685a3
--- /dev/null
+++ b/usr.sbin/vnconfig/vnconfig.8
@@ -0,0 +1,105 @@
+.\" Copyright (c) 1993 University of Utah.
+.\" Copyright (c) 1980, 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Systems Programming Group of the University of Utah Computer
+.\" Science Department.
+.\"
+.\" 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.
+.\"
+.\"     @(#)vnconfig.8	8.1 (Berkeley) 6/5/93
+.\"
+.Dd July 8, 1993
+.Dt VNCONFIG 8
+.Os BSD 4
+.Sh NAME
+.Nm vnconfig
+.Nd configure vnode disks
+.Sh SYNOPSIS
+.Nm vnconfig Fl c
+.Op Fl v
+.Ar special_file
+.Ar regular_file
+.Nm vnconfig Fl u
+.Op Fl v
+.Ar special_file
+.Sh DESCRIPTION
+The
+.Nm vnconfig
+command configures vnode pseudo disk devices.
+It will associate the special file 
+.Ar special_file
+with the regular file
+.Ar regular_file
+allowing the latter to be accessed as though it were a disk.
+Hence a regular file within the filesystem can be used for swapping
+or can contain a filesystem that is mounted in the name space.
+.Pp
+Options indicate an action to be performed:
+.Bl -tag -width indent
+.It Fl c
+Configures the device.
+If successful, references to
+.Ar special_file
+will access the contents of
+.Ar regular_file .
+.It Fl u
+Unconfigures the device.
+.It Fl v
+Print messages to stdout describing actions taken.
+.El
+.Pp
+If no action option is given,
+.Fl c
+is assumed.
+.Sh FILES
+.Bl -tag -width /etc/rvnd?? -compact
+.It Pa /dev/rvnd??
+.It Pa /dev/vnd??
+.El
+.Sh EXAMPLES
+.Pp
+.Dl vnconfig /dev/vnd0c /tmp/diskimage
+.Pp
+Configures the vnode disk
+.Pa vnd0c .
+.Pp
+.Dl vnconfig -u /dev/vnd0c
+.Pp
+Unconfigures the
+.Pa vnd0c
+device.
+.Sh BUGS
+This command should really be named
+.Nm vndconfig .
+.Sh SEE ALSO
+.Xr swapon 8 ,
+.Xr mount 8 ,
+.Xr umount 8 .
diff --git a/usr.sbin/vnconfig/vnconfig.c b/usr.sbin/vnconfig/vnconfig.c
new file mode 100644
index 00000000000..3bfac4273b5
--- /dev/null
+++ b/usr.sbin/vnconfig/vnconfig.c
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 1993 University of Utah.
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department.
+ *
+ * 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.
+ *
+ * from: Utah $Hdr: vnconfig.c 1.1 93/12/15$
+ *
+ *	@(#)vnconfig.c	8.1 (Berkeley) 12/15/93
+ */
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+
+#include <dev/vndioctl.h>
+
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define VND_CONFIG	1
+#define VND_UNCONFIG	2
+
+int verbose = 0;
+
+char *rawdevice __P((char *));
+void usage __P((void));
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int ch, rv, action = VND_CONFIG;
+
+	while ((ch = getopt(argc, argv, "cuv")) != -1) {
+		switch (ch) {
+		case 'c':
+			action = VND_CONFIG;
+			break;
+		case 'u':
+			action = VND_UNCONFIG;
+			break;
+		case 'v':
+			verbose = 1;
+			break;
+		default:
+		case '?':
+			usage();
+			/* NOTREACHED */
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (action == VND_CONFIG && argc == 2)
+		rv = config(argv[0], argv[1], action);
+	else if (action == VND_UNCONFIG && argc == 1)
+		rv = config(argv[0], NULL, action);
+	else
+		usage();
+	exit(rv);
+}
+
+config(dev, file, action)
+	char *dev;
+	char *file;
+	int action;
+{
+	struct vnd_ioctl vndio;
+	FILE *f;
+	char *rdev;
+	int rv;
+
+	rdev = rawdevice(dev);
+	f = fopen(rdev, "rw");
+	if (f == NULL) {
+		warn(rdev);
+		return (1);
+	}
+	vndio.vnd_file = file;
+
+	/*
+	 * Clear (un-configure) the device
+	 */
+	if (action == VND_UNCONFIG) {
+		rv = ioctl(fileno(f), VNDIOCCLR, &vndio);
+		if (rv)
+			warn("VNDIOCCLR");
+		else if (verbose)
+			printf("%s: cleared\n", dev);
+	}
+	/*
+	 * Configure the device
+	 */
+	if (action == VND_CONFIG) {
+		rv = ioctl(fileno(f), VNDIOCSET, &vndio);
+		if (rv)
+			warn("VNDIOCSET");
+		else if (verbose)
+			printf("%s: %d bytes on %s\n", dev, vndio.vnd_size,
+			    file);
+	}
+done:
+	fclose(f);
+	fflush(stdout);
+	return (rv < 0);
+}
+
+char *
+rawdevice(dev)
+	char *dev;
+{
+	register char *rawbuf, *dp, *ep;
+	struct stat sb;
+	int len;
+
+	len = strlen(dev);
+	rawbuf = malloc(len + 2);
+	strcpy(rawbuf, dev);
+	if (stat(rawbuf, &sb) != 0 || !S_ISCHR(sb.st_mode)) {
+		dp = rindex(rawbuf, '/');
+		if (dp) {
+			for (ep = &rawbuf[len]; ep > dp; --ep)
+				*(ep+1) = *ep;
+			*++ep = 'r';
+		}
+	}
+	return (rawbuf);
+}
+
+void
+usage()
+{
+
+	(void)fprintf(stderr, "%s%s",
+	    "usage: vnconfig -c [-v] special-file regular-file\n",
+	    "       vnconfig -u [-v] special-file\n");
+	exit(1);
+}