1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/* RomFS internal definitions
 3 *
 4 * Copyright © 2007 Red Hat, Inc. All Rights Reserved.
 5 * Written by David Howells (dhowells@redhat.com)
 
 
 
 
 
 6 */
 7
 8#include <linux/romfs_fs.h>
 9
10struct romfs_inode_info {
11	struct inode	vfs_inode;
12	unsigned long	i_metasize;	/* size of non-data area */
13	unsigned long	i_dataoffset;	/* from the start of fs */
14};
15
16static inline size_t romfs_maxsize(struct super_block *sb)
17{
18	return (size_t) (unsigned long) sb->s_fs_info;
19}
20
21static inline struct romfs_inode_info *ROMFS_I(struct inode *inode)
22{
23	return container_of(inode, struct romfs_inode_info, vfs_inode);
24}
25
26/*
27 * mmap-nommu.c
28 */
29#if !defined(CONFIG_MMU) && defined(CONFIG_ROMFS_ON_MTD)
30extern const struct file_operations romfs_ro_fops;
31#else
32#define romfs_ro_fops	generic_ro_fops
33#endif
34
35/*
36 * storage.c
37 */
38extern int romfs_dev_read(struct super_block *sb, unsigned long pos,
39			  void *buf, size_t buflen);
40extern ssize_t romfs_dev_strnlen(struct super_block *sb,
41				 unsigned long pos, size_t maxlen);
42extern int romfs_dev_strcmp(struct super_block *sb, unsigned long pos,
43			    const char *str, size_t size);

 
 1/* RomFS internal definitions
 2 *
 3 * Copyright © 2007 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public License
 8 * as published by the Free Software Foundation; either version
 9 * 2 of the License, or (at your option) any later version.
10 */
11
12#include <linux/romfs_fs.h>
13
14struct romfs_inode_info {
15	struct inode	vfs_inode;
16	unsigned long	i_metasize;	/* size of non-data area */
17	unsigned long	i_dataoffset;	/* from the start of fs */
18};
19
20static inline size_t romfs_maxsize(struct super_block *sb)
21{
22	return (size_t) (unsigned long) sb->s_fs_info;
23}
24
25static inline struct romfs_inode_info *ROMFS_I(struct inode *inode)
26{
27	return container_of(inode, struct romfs_inode_info, vfs_inode);
28}
29
30/*
31 * mmap-nommu.c
32 */
33#if !defined(CONFIG_MMU) && defined(CONFIG_ROMFS_ON_MTD)
34extern const struct file_operations romfs_ro_fops;
35#else
36#define romfs_ro_fops	generic_ro_fops
37#endif
38
39/*
40 * storage.c
41 */
42extern int romfs_dev_read(struct super_block *sb, unsigned long pos,
43			  void *buf, size_t buflen);
44extern ssize_t romfs_dev_strnlen(struct super_block *sb,
45				 unsigned long pos, size_t maxlen);
46extern int romfs_dev_strcmp(struct super_block *sb, unsigned long pos,
47			    const char *str, size_t size);