1 files changed, 115 insertions, 0 deletions
diff --git a/usr.sbin/isfctl/isfctl.c b/usr.sbin/isfctl/isfctl.c
new file mode 100644
index 0000000..af99093
--- /dev/null
+++ b/usr.sbin/isfctl/isfctl.c
@@ -0,0 +1,115 @@
+/*-
+ * Copyright (c) 2012 SRI International
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+/* XXXBED: should install and include sys/dev/isf.h */
+struct isf_range {
+	off_t	ir_off;		/* Offset of range to delete (set to 0xFF) */
+	size_t	ir_size;	/* Size of range */
+};
+
+#define ISF_ERASE	_IOW('I', 1, struct isf_range)
+
+#define ISF_ERASE_BLOCK (128 * 1024)
+
+static enum {UNSET, ERASE} action = UNSET;
+
+static void
+usage(void)
+{
+	fprintf(stderr, "usage: isfctl <device> erase <offset> <size>\n");
+	exit(1);
+}
+
+int
+main(int argc, char **argv)
+{
+	struct isf_range	ir;
+	int			fd, i;
+	char			*p, *dev;
+	
+	if (argc < 2)
+		usage();
+	argc--; argv++;
+	
+	if (*argv[0] == '/')
+		dev = argv[0];
+	else
+		asprintf(&dev, "/dev/%s", argv[0]);
+	argc--; argv++;
+	fd = open(dev, O_RDWR);
+	if (fd < 0)
+		err(1, "unable to open device -- %s", dev);
+
+	if (strcmp(argv[0], "erase") == 0) {
+		if (argc != 3)
+			usage();
+		action = ERASE;
+		ir.ir_off = strtol(argv[1], &p, 0);
+		if (*p)
+			errx(1, "invalid offset -- %s", argv[2]);
+		ir.ir_size = strtol(argv[2], &p, 0);
+		if (*p)
+			errx(1, "invalid size -- %s", argv[3]);
+		/*
+		 * If the user requests to delete less than 32K of space
+		 * then assume that they want to delete a number of 128K
+		 * blocks.
+		 */
+		if (ir.ir_size < 32 * 1024)
+			ir.ir_size *= 128 * 1024;
+	}
+
+	switch (action) {
+	case ERASE:
+		i = ioctl(fd, ISF_ERASE, &ir);
+		if (i < 0)
+			err(1, "ioctl(%s, %jx, %zx)", dev,
+			    (intmax_t)ir.ir_off, ir.ir_size);
+		break;
+	default:
+		usage();
+	}
+
+	close(fd);
+	return (0);
+}