xnu-792.tar.gz

[apple/xnu.git] / pexpert / gen / bootargs.c

diff --git a/pexpert/gen/bootargs.c b/pexpert/gen/bootargs.c
index d7311efd8da78e0534d209d64131c68eeaaa571f..09272e238c7baf6c4c69ac23f45938ae2eb0b67b 100644 (file)
--- a/pexpert/gen/bootargs.c
+++ b/pexpert/gen/bootargs.c
@@ -1,24 +1,21 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
  * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -31,10 +28,19 @@ extern int getval(char *s, int *val);
 #define        NUM     0
 #define        STR     1
 
-boolean_t
+boolean_t 
 PE_parse_boot_arg(
-       char    *arg_string,
-       void    *arg_ptr)
+       const char  *arg_string,
+       void            *arg_ptr)
+{
+       return PE_parse_boot_argn(arg_string, arg_ptr, -1);
+}
+
+boolean_t
+PE_parse_boot_argn(
+       const char      *arg_string,
+       void            *arg_ptr,
+       int                     max_len)
 {
        char *args;
        char *cp, c;
@@ -80,7 +86,13 @@ PE_parse_boot_arg(
                                args = cp+1;
                                goto gotit;
                        }
-
+                       if ('_' == *arg_string) /* Force a string copy if the argument name begins with an underscore */
+                       {
+                               int hacklen = 16 > max_len ? 16 : max_len;
+                               argstrcpy2 (++cp, (char *)arg_ptr, hacklen); /* Hack - terminate after 16 characters */
+                               arg_found = TRUE;
+                               break;
+                       }
                        switch (getval(cp, &val)) 
                        {
                                case NUM:
@@ -88,7 +100,10 @@ PE_parse_boot_arg(
                                        arg_found = TRUE;
                                        break;
                                case STR:
-                                       argstrcpy(++cp, (char *)arg_ptr);
+                                       if(max_len > 0) //max_len of 0 performs no copy at all
+                                               argstrcpy2(++cp, (char *)arg_ptr, max_len);
+                                       else if(max_len == -1)
+                                               argstrcpy(++cp, (char *)arg_ptr);
                                        arg_found = TRUE;
                                        break;
                        }
@@ -129,6 +144,22 @@ argstrcpy(
        return(i);
 }
 
+int
+argstrcpy2(
+       char *from, 
+       char *to,
+       unsigned maxlen)
+{
+       int i = 0;
+
+       while (!isargsep(*from) && i < maxlen) {
+               i++;
+               *to++ = *from++;
+       }
+       *to = 0;
+       return(i);
+}
+
 int
 getval(
        char *s,