Making note of my changes

[oweals/busybox.git] / mknod.c

diff --git a/mknod.c b/mknod.c
index 95d7de360d2c521345a2f5014e64d9eb7e7afa87..5822cd3adb120daf0117c9d56b4ce37c30e8aec0 100644 (file)
--- a/mknod.c
+++ b/mknod.c
@@ -1,3 +1,24 @@
+/*
+ * Mini mknod implementation for busybox
+ *
+ * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
+ *
+ * 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
+ *
+ */
+
 #include "internal.h"
 #include <stdio.h>
 #include <errno.h>
@@ -6,9 +27,9 @@
 #include <fcntl.h>
 #include <unistd.h>
 
-const char mknod_usage[] = "mknod file b|c|u|p major minor\n"
-"\tMake special files.\n"
-"\n"
+static const char mknod_usage[] = "mknod NAME TYPE MAJOR MINOR\n\n"
+"Make block or character special files.\n\n"
+"TYPEs include:\n"
 "\tb:\tMake a block (buffered) device.\n"
 "\tc or u:\tMake a character (un-buffered) device.\n"
 "\tp:\tMake a named pipe. Major and minor are ignored for named pipes.\n";
@@ -19,6 +40,9 @@ mknod_main(int argc, char** argv)
        mode_t  mode = 0;
        dev_t   dev = 0;
 
+       if ( argc != 5 || **(argv+1) == '-' ) {
+           usage (mknod_usage);
+       }
        switch(argv[2][0]) {
        case 'c':
        case 'u':