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/* 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);
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