Initial revision

cole/utils/cole_isfs_fast.c

@@ -0,0 +1,77 @@
+/*
+   cole - A free C OLE library.
+   cole_isfs_fast - Fast guess if a file is a valid filesystem.
+   Copyright 1998, 1999  Roberto Arturo Tena Sanchez
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published  by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ */
+/*
+   Arturo Tena <arturo@directmail.org>
+ */
+
+
+#include <stdio.h>
+
+/* To compile this file outside cole source tree,
+   you must include here <cole/cole.h> instead <cole.h> */
+#include <cole.h>
+
+
+#define PRGNAME "cole_isfs_fast"
+
+
+int
+main (int argc, char **argv)
+{
+	FILE *file;
+	unsigned char sign[8];
+
+
+	if (argc != 2) {
+		fprintf (stderr, PRGNAME". Prints `yes' if the file is a "
+				 "valid filesystem, otherwise it prints `no'. "
+				 "The test is not much accurate.\n"
+				 "Usage: "PRGNAME" <FILE>\n");
+		exit (1);
+	}
+
+
+	file = fopen (argv[1], "rb");
+	if (file == NULL) {
+		perror (PRGNAME);
+		exit (1);
+	}
+
+	fread (sign, 1, 8, file);
+	if (   sign[0] != 0xd0
+	    || sign[1] != 0xcf
+	    || sign[2] != 0x11
+	    || sign[3] != 0xe0
+	    || sign[4] != 0xa1
+	    || sign[5] != 0xb1
+	    || sign[6] != 0x1a
+	    || sign[7] != 0xe1) {
+		printf ("no\n");
+		fclose (file);
+		exit (1);
+	}
+
+	fclose (file);
+
+	printf ("yes\n");
+
+	exit (0);
+}
+