Beginnings of a new, better portable FS shell with Haiku FS interface.

Doesn't do anything ATM, but already provides the required system
interface (VFS, caches, POSIX functions).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20859 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/fs_shell/fssh_defs.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2007, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+
+#ifndef _FSSH_DEFS_H
+#define _FSSH_DEFS_H
+
+#include "fssh_types.h"
+
+
+// Limits
+#define FSSH_B_DEV_NAME_LENGTH		128
+#define FSSH_B_FILE_NAME_LENGTH		256
+#define FSSH_B_PATH_NAME_LENGTH 	1024
+#define FSSH_B_ATTR_NAME_LENGTH		(FSSH_B_FILE_NAME_LENGTH-1)
+#define FSSH_B_MIME_TYPE_LENGTH		(FSSH_B_ATTR_NAME_LENGTH - 15)
+#define FSSH_B_MAX_SYMLINKS			16
+
+// Open Modes
+#define FSSH_B_READ_ONLY 		FSSH_O_RDONLY	// read only 
+#define FSSH_B_WRITE_ONLY 		FSSH_O_WRONLY 	// write only 
+#define FSSH_B_READ_WRITE		FSSH_O_RDWR   	// read and write
+
+#define	FSSH_B_FAIL_IF_EXISTS	FSSH_O_EXCL		// exclusive create 
+#define FSSH_B_CREATE_FILE		FSSH_O_CREAT	// create the file 
+#define FSSH_B_ERASE_FILE		FSSH_O_TRUNC	// erase the file's data 
+#define FSSH_B_OPEN_AT_END	   	FSSH_O_APPEND	// point to the end of the data 
+
+// Node Flavors
+enum fssh_node_flavor {
+  FSSH_B_FILE_NODE		= 0x01,
+  FSSH_B_SYMLINK_NODE	= 0x02,
+  FSSH_B_DIRECTORY_NODE	= 0x04,
+  FSSH_B_ANY_NODE		= 0x07
+};
+
+
+#if defined(__GNUC__) && __GNUC__ > 3
+#define fssh_offsetof(type,member)   __builtin_offsetof(type, member)
+#else
+#define fssh_offsetof(type,member) ((size_t)&((type*)0)->member)
+#endif
+
+#define fssh_min_c(a,b) ((a)>(b)?(b):(a))
+#define fssh_max_c(a,b) ((a)>(b)?(a):(b))
+
+#define _FSSH_PACKED	__attribute__((packed))
+
+
+#endif	// _FSSH_DEFS_H