/* 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_strcmp(struct super_block *sb, unsigned long pos, const char *str, size_t size);