Add utilities for the kernel linker.

1 files changed, 92 insertions, 0 deletions

diff --git a/sbin/kldunload/kldunload.c b/sbin/kldunload/kldunload.c
new file mode 100644
index 0000000..5f94ef9
--- /dev/null
+++ b/sbin/kldunload/kldunload.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1997 Doug Rabson
+ * 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.
+ *
+ * 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.
+ *
+ *	$Id$
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/linker.h>
+
+static char* progname;
+
+static void usage()
+{
+    fprintf(stderr, "usage: modunload [-i id] [-n filename]\n");
+    exit(1);
+}
+
+int main(int argc, char** argv)
+{
+    int c;
+    int verbose = 0;
+    int fileid = 0;
+    char* filename = 0;
+
+    progname = argv[0];
+    while ((c = getopt(argc, argv, "vi:n:")) != -1)
+	switch (c) {
+	case 'v':
+	    verbose = 1;
+	    break;
+	case 'i':
+	    fileid = atoi(optarg);
+	    break;
+	case 'n':
+	    filename = optarg;
+	    break;
+	default:
+	    usage();
+	}
+    argc -= optind;
+    argv += optind;
+
+    if (argc != 0)
+	usage();
+
+    if (fileid == 0 && filename == 0)
+	usage();
+
+    if (filename) {
+	fileid = kldfind(filename);
+	if (fileid < 0)
+	    err(1, "Can't find file %s", filename);
+    }
+
+    if (verbose) {
+	struct kld_file_stat stat;
+	stat.version = sizeof stat;
+	if (kldstat(fileid, &stat) < 0)
+	    err(1, "Can't stat file");
+	printf("Unloading %s, id=%d\n", stat.name, fileid);
+    }
+
+    if (kldunload(fileid) < 0)
+	err(1, "Can't unload file");
+
+    return 0;
+}
+