internal.h (1147B)
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);