e0c93142ce
"extern inline" doesn't make sense. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/* Internal data structures for ADFS */
|
|
|
|
#define ADFS_FREE_FRAG 0
|
|
#define ADFS_BAD_FRAG 1
|
|
#define ADFS_ROOT_FRAG 2
|
|
|
|
#define ADFS_NDA_OWNER_READ (1 << 0)
|
|
#define ADFS_NDA_OWNER_WRITE (1 << 1)
|
|
#define ADFS_NDA_LOCKED (1 << 2)
|
|
#define ADFS_NDA_DIRECTORY (1 << 3)
|
|
#define ADFS_NDA_EXECUTE (1 << 4)
|
|
#define ADFS_NDA_PUBLIC_READ (1 << 5)
|
|
#define ADFS_NDA_PUBLIC_WRITE (1 << 6)
|
|
|
|
#include <linux/version.h>
|
|
#include "dir_f.h"
|
|
|
|
struct buffer_head;
|
|
|
|
/*
|
|
* Directory handling
|
|
*/
|
|
struct adfs_dir {
|
|
struct super_block *sb;
|
|
|
|
int nr_buffers;
|
|
struct buffer_head *bh[4];
|
|
unsigned int pos;
|
|
unsigned int parent_id;
|
|
|
|
struct adfs_dirheader dirhead;
|
|
union adfs_dirtail dirtail;
|
|
};
|
|
|
|
/*
|
|
* This is the overall maximum name length
|
|
*/
|
|
#define ADFS_MAX_NAME_LEN 256
|
|
struct object_info {
|
|
__u32 parent_id; /* parent object id */
|
|
__u32 file_id; /* object id */
|
|
__u32 loadaddr; /* load address */
|
|
__u32 execaddr; /* execution address */
|
|
__u32 size; /* size */
|
|
__u8 attr; /* RISC OS attributes */
|
|
unsigned char name_len; /* name length */
|
|
char name[ADFS_MAX_NAME_LEN];/* file name */
|
|
};
|
|
|
|
struct adfs_dir_ops {
|
|
int (*read)(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir);
|
|
int (*setpos)(struct adfs_dir *dir, unsigned int fpos);
|
|
int (*getnext)(struct adfs_dir *dir, struct object_info *obj);
|
|
int (*update)(struct adfs_dir *dir, struct object_info *obj);
|
|
int (*create)(struct adfs_dir *dir, struct object_info *obj);
|
|
int (*remove)(struct adfs_dir *dir, struct object_info *obj);
|
|
void (*free)(struct adfs_dir *dir);
|
|
};
|
|
|
|
struct adfs_discmap {
|
|
struct buffer_head *dm_bh;
|
|
__u32 dm_startblk;
|
|
unsigned int dm_startbit;
|
|
unsigned int dm_endbit;
|
|
};
|
|
|
|
/* Inode stuff */
|
|
struct inode *adfs_iget(struct super_block *sb, struct object_info *obj);
|
|
int adfs_write_inode(struct inode *inode,int unused);
|
|
int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
|
|
|
|
/* map.c */
|
|
extern int adfs_map_lookup(struct super_block *sb, unsigned int frag_id, unsigned int offset);
|
|
extern unsigned int adfs_map_free(struct super_block *sb);
|
|
|
|
/* Misc */
|
|
void __adfs_error(struct super_block *sb, const char *function,
|
|
const char *fmt, ...);
|
|
#define adfs_error(sb, fmt...) __adfs_error(sb, __FUNCTION__, fmt)
|
|
|
|
/* super.c */
|
|
|
|
/*
|
|
* Inodes and file operations
|
|
*/
|
|
|
|
/* dir_*.c */
|
|
extern struct inode_operations adfs_dir_inode_operations;
|
|
extern struct file_operations adfs_dir_operations;
|
|
extern struct dentry_operations adfs_dentry_operations;
|
|
extern struct adfs_dir_ops adfs_f_dir_ops;
|
|
extern struct adfs_dir_ops adfs_fplus_dir_ops;
|
|
|
|
extern int adfs_dir_update(struct super_block *sb, struct object_info *obj);
|
|
|
|
/* file.c */
|
|
extern struct inode_operations adfs_file_inode_operations;
|
|
extern struct file_operations adfs_file_operations;
|
|
|
|
static inline __u32 signed_asl(__u32 val, signed int shift)
|
|
{
|
|
if (shift >= 0)
|
|
val <<= shift;
|
|
else
|
|
val >>= -shift;
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* Calculate the address of a block in an object given the block offset
|
|
* and the object identity.
|
|
*
|
|
* The root directory ID should always be looked up in the map [3.4]
|
|
*/
|
|
static inline int
|
|
__adfs_block_map(struct super_block *sb, unsigned int object_id,
|
|
unsigned int block)
|
|
{
|
|
if (object_id & 255) {
|
|
unsigned int off;
|
|
|
|
off = (object_id & 255) - 1;
|
|
block += off << ADFS_SB(sb)->s_log2sharesize;
|
|
}
|
|
|
|
return adfs_map_lookup(sb, object_id >> 8, block);
|
|
}
|