1 files changed, 103 insertions, 0 deletions
diff --git a/sys/dev/microcode/bcw/extract/extract.c b/sys/dev/microcode/bcw/extract/extract.c
new file mode 100644
index 00000000000..c8e23c7fc85
--- /dev/null
+++ b/sys/dev/microcode/bcw/extract/extract.c
@@ -0,0 +1,103 @@
+/*	$OpenBSD: extract.c,v 1.1 2007/01/06 18:31:47 mglocker Exp $ */
+
+/*
+ * Copyright (c) 2006 Marcus Glocker <mglocker@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+struct header {
+	char	filename[64];
+	int	filesize;
+	int	fileoffset;
+};
+
+int
+main(int argc, char *argv[])
+{
+	int		  i, fdin, fdout, nfiles;
+	void		 *p;
+	struct header	**h;
+
+	if (argc < 2) {
+		printf("%s <firmware file>\n", argv[0]);
+		exit(1);
+	}
+
+	/* open firmware file */
+	if ((fdin = open(argv[1], O_RDONLY)) == -1)
+		err(1, "open of input file failed");
+
+	/* read first header */
+	if (read(fdin, &nfiles, sizeof(nfiles)) < 1)
+		err(1, "first header parse failed");
+	nfiles = ntohl(nfiles);
+
+	/* allocate space for header struct */
+	if ((h = malloc(nfiles * sizeof(*h))) == NULL)
+		err(1, "malloc");
+	for (i = 0; i < nfiles; i++) {
+		if ((h[i] = malloc(sizeof(struct header))) == NULL)
+			err(1, "malloc");
+	}
+
+	/* read header */
+	for (i = 0; i < nfiles; i++) {
+		if (read(fdin, h[i]->filename, sizeof(h[i]->filename)) < 1)
+			err(1, "filename header read failed\n");
+		if (read(fdin, &h[i]->filesize, sizeof(h[i]->filesize)) < 1)
+			err(1, "filesize header read failed\n");
+		h[i]->filesize = htonl(h[i]->filesize);
+		if (read(fdin, &h[i]->fileoffset, sizeof(h[i]->fileoffset)) < 1)
+			err(1, "fileoffset header read failed\n");
+		h[i]->fileoffset = htonl(h[i]->fileoffset);
+	}
+
+	/* write each file */
+	for (i = 0; i < nfiles; i++) {
+		if ((fdout = open(h[i]->filename, O_CREAT|O_TRUNC|O_RDWR, 0644))
+		    == -1)
+			err(1, "open of output file failed");
+		if ((p = malloc(h[i]->filesize)) == NULL)
+			err(1, "malloc");
+		if (lseek(fdin, h[i]->fileoffset, SEEK_SET) == -1)
+			err(1, "lseek");
+		if (read(fdin, p, h[i]->filesize) < 1)
+			err(1, "read from input file failed");
+		if (write(fdout, p, h[i]->filesize) < 1)
+			err(1, "write to output file failed");
+		free(p);
+		close(fdout);
+		printf("extracting %s (filesize %d, fileoffset %d)\n",
+		    h[i]->filename, h[i]->filesize, h[i]->fileoffset);
+	}
+
+	/* free header space */
+	for (i = 0; i < nfiles; i++)
+		free(h[i]);
+	free(h);
+
+	/* game over */
+	close (fdin);
+
+	return (0);
+}