1 files changed, 129 insertions, 0 deletions
diff --git a/sbin/dumpon/dumpon.c b/sbin/dumpon/dumpon.c
new file mode 100644
index 0000000..dc185e9
--- /dev/null
+++ b/sbin/dumpon/dumpon.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 1980, 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1980, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+/*static char sccsid[] = "From: @(#)swapon.c	8.1 (Berkeley) 6/5/93";*/
+static const char rcsid[] =
+	"$Id: dumpon.c,v 1.1 1995/05/12 19:10:09 wollman Exp $";
+#endif /* not lint */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <sys/stat.h>
+#include <sysexits.h>
+#include <err.h>
+
+void	usage __P((void)) __dead2;
+static char *whoami;
+
+int
+main(int argc, char **argv)
+{
+	extern char *optarg;
+	extern int optind;
+	int ch, verbose, rv;
+	struct stat stab;
+	int mib[2];
+
+	verbose = rv = 0;
+	whoami = argv[0];
+	while ((ch = getopt(argc, argv, "v")) != EOF)
+		switch((char)ch) {
+		case 'v':
+			verbose = 1;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argv += optind;
+
+	if (!argv[0] || argv[1])
+		usage();
+
+	if (strcmp(argv[0], "off")) {
+		rv = stat(argv[0], &stab);
+		if (rv) {
+			err(EX_OSFILE, "%s", argv[0]);
+		}
+
+		if (!S_ISBLK(stab.st_mode)) {
+			errx(EX_USAGE, "%s: must specify a block device",
+			     argv[0]);
+		}
+	} else {
+		stab.st_rdev = NODEV;
+	}
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_DUMPDEV;
+
+	rv = sysctl(mib, 2, (void *)0, (size_t *)0, &stab.st_rdev,
+		    sizeof stab.st_rdev);
+	if (rv) {
+		err(EX_OSERR, "sysctl: kern.dumpdev");
+	}
+
+	if (verbose) {
+		if (stab.st_rdev == NODEV) {
+			printf("%s: crash dumps disabled\n", whoami);
+		} else {
+			printf("%s: crash dumps to %s (%lu, %lu)\n",
+			       whoami, argv[0],
+			       (unsigned long)major(stab.st_rdev),
+			       (unsigned long)minor(stab.st_rdev));
+		}
+	}
+
+	return 0;
+}
+
+void
+usage()
+{
+	fprintf(stderr,
+		"usage: %s [-v] special_file\n"
+		"       %s [-v] off\n", whoami, whoami);
+	exit(EX_USAGE);
+}