Commit yaboot 1.3.0

[yaboot.git] / include / fs.h

diff --git a/include/fs.h b/include/fs.h
new file mode 100644 (file)
index 0000000..3ec5928
--- /dev/null
+++ b/include/fs.h
@@ -0,0 +1,70 @@
+/*
+    FileSystems common definitions
+
+    Copyright (C) 1999 Benjamin Herrenschmidt
+
+    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
+*/
+
+#ifndef FS_H
+#define FS_H
+
+#include "partition.h"
+#include "file.h"
+
+struct fs_t {
+       const char* name;
+
+       int (*open)(    struct boot_file_t*     file,
+                       const char*             dev_name,
+                       struct partition_t*     part,
+                       const char*             file_name);
+                       
+       int (*read)(    struct boot_file_t*     file,
+                       unsigned int            size,
+                       void*                   buffer);
+                               
+       int (*seek)(    struct boot_file_t*     file,
+                       unsigned int            newpos);
+                                       
+       int (*close)(   struct boot_file_t*     file);
+};
+
+extern const struct fs_t *fs_of;
+extern const struct fs_t *fs_of_netboot;
+
+const struct fs_t *fs_open( struct boot_file_t *file, const char *dev_name,
+                            struct partition_t *part, const char *file_name );
+
+#if DEBUG
+# define DEBUG_ENTER prom_printf( "--> %s\n", __PRETTY_FUNCTION__ );
+# define DEBUG_LEAVE(str) \
+    prom_printf( "<-- %s - %s\n", __PRETTY_FUNCTION__, #str );
+# define DEBUG_F(fmt, args...)\
+{\
+    prom_printf( "    %s - ", __PRETTY_FUNCTION__ );\
+    prom_printf( fmt, ## args );\
+}
+# define DEBUG_OPEN DEBUG_F( "dev=%s, part=0x%08lx (%d), file_name=%s\n",\
+                             dev_name, part, part ? part->part_number : -1,\
+                             file_name);
+#else
+#define DEBUG_ENTER
+#define DEBUG_LEAVE(x)
+#define DEBUG_F(fmt, args...)
+#define DEBUG_OPEN
+#endif
+
+#endif