change malloc_name() and free_name() to use kmalloc2() and kfree2() respectively

Author: mikaku

kernel/syscalls.c

@@ -64,38 +64,38 @@ static int verify_address(int type, const void *addr, unsigned int size)
 
 void free_name(const char *name)
 {
-	kfree((unsigned int)name);
+	kfree2((unsigned int)name);
 }
 
 /*
  * This function has two objectives:
  *
  * 1. verifies the memory address validity of the char pointer supplied by the
  *    user and, at the same time, limits its length to PAGE_SIZE (4096) bytes.
- * 2. creates a copy of 'filename' in the kernel data space before using it.
+ * 2. creates a copy of 'string' in the kernel data space before using it.
  */
-int malloc_name(const char *filename, char **name)
+int malloc_name(const char *string, char **name)
 {
 	short int n, len;
 	char *b;
 	int errno;
 
 	/* verifies only the pointer address */
-	if((errno = verify_address(PROT_READ, filename, 0))) {
+	if((errno = verify_address(PROT_READ, string, 0))) {
 		return errno;
 	}
 
-	len = MIN(strlen(filename), PAGE_SIZE);
-	if(!(b = (char *)kmalloc())) {
+	len = MIN(strlen(string) + 1, PAGE_SIZE);
+	if(!(b = (char *)kmalloc2(len))) {
 		return -ENOMEM;
 	}
 	*name = b;
-	for(n = 0; n < (len + 1); n++) {
-		if(!(*b = *filename)) {
+	for(n = 0; n < len; n++) {
+		if(!(*b = *string)) {
 			return 0;
 		}
 		b++;
-		filename++;
+		string++;
 	}
 
 	free_name(*name);