summaryrefslogtreecommitdiff
path: root/fs/romfs/internal.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/romfs/internal.h')
-rw-r--r--fs/romfs/internal.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/fs/romfs/internal.h b/fs/romfs/internal.h
new file mode 100644
index 000000000000..06044a9dc62d
--- /dev/null
+++ b/fs/romfs/internal.h
@@ -0,0 +1,47 @@
+/* RomFS internal definitions
+ *
+ * Copyright © 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.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.
+ */
+
+#include <linux/romfs_fs.h>
+
+struct romfs_inode_info {
+ struct inode vfs_inode;
+ unsigned long i_metasize; /* size of non-data area */
+ unsigned long i_dataoffset; /* from the start of fs */
+};
+
+static inline size_t romfs_maxsize(struct super_block *sb)
+{
+ return (size_t) (unsigned long) sb->s_fs_info;
+}
+
+static inline struct romfs_inode_info *ROMFS_I(struct inode *inode)
+{
+ return container_of(inode, struct romfs_inode_info, vfs_inode);
+}
+
+/*
+ * mmap-nommu.c
+ */
+#if !defined(CONFIG_MMU) && defined(CONFIG_ROMFS_ON_MTD)
+extern const struct file_operations romfs_ro_fops;
+#else
+#define romfs_ro_fops generic_ro_fops
+#endif
+
+/*
+ * storage.c
+ */
+extern int romfs_dev_read(struct super_block *sb, unsigned long pos,
+ void *buf, size_t buflen);
+extern ssize_t romfs_dev_strnlen(struct super_block *sb,
+ unsigned long pos, size_t maxlen);
+extern int romfs_dev_strncmp(struct super_block *sb, unsigned long pos,
+ const char *str, size_t size);