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#ifndef LINUX_UMSDOS_FS_H
#define LINUX_UMSDOS_FS_H
#define UMSDOS_VERSION 0
#define UMSDOS_RELEASE 4
/* This is the file acting as a directory extension */
#define UMSDOS_EMD_FILE "--linux-.---"
#define UMSDOS_EMD_NAMELEN 12
#define UMSDOS_PSDROOT_NAME "linux"
#define UMSDOS_PSDROOT_LEN 5
#ifndef _LINUX_TYPES_H
#include <linux/types.h>
#endif
#ifndef _LINUX_DIRENT_H
#include <linux/dirent.h>
#endif
#ifndef _LINUX_IOCTL_H
#include <linux/ioctl.h>
#endif
struct umsdos_fake_info {
char fname[13];
int len;
};
#define UMSDOS_MAXNAME 220
/* This structure is 256 bytes large, depending on the name, only part */
/* of it is written to disk */
struct umsdos_dirent {
unsigned char name_len; /* if == 0, then this entry is not used */
unsigned char flags; /* UMSDOS_xxxx */
unsigned short nlink; /* How many hard links point to this entry */
uid_t uid; /* Owner user id */
gid_t gid; /* Group id */
time_t atime; /* Access time */
time_t mtime; /* Last modification time */
time_t ctime; /* Creation time */
dev_t rdev; /* major and minor number of a device */
/* special file */
umode_t mode; /* Standard UNIX permissions bits + type of */
char spare[12]; /* unused bytes for future extensions */
/* file, see linux/stat.h */
char name[UMSDOS_MAXNAME]; /* Not '\0' terminated */
/* but '\0' padded, so it will allow */
/* for adding news fields in this record */
/* by reducing the size of name[] */
};
#define UMSDOS_HIDDEN 1 /* Never show this entry in directory search */
#define UMSDOS_HLINK 2 /* It is a (pseudo) hard link */
/* #Specification: EMD file / record size
Entry are 64 bytes wide in the EMD file. It allows for a 30 characters
name. If a name is longer, contiguous entries are allocated. So a
umsdos_dirent may span multiple records.
*/
#define UMSDOS_REC_SIZE 64
/* Translation between MSDOS name and UMSDOS name */
struct umsdos_info{
int msdos_reject; /* Tell if the file name is invalid for MSDOS */
/* See umsdos_parse */
struct umsdos_fake_info fake;
struct umsdos_dirent entry;
off_t f_pos; /* offset of the entry in the EMD file */
/* or offset where the entry may be store */
/* if it is a new entry */
int recsize; /* Record size needed to store entry */
};
/* Definitions for ioctl (number randomly chosen) */
/* The next ioctl commands operate only on the DOS directory */
/* The file umsdos_progs/umsdosio.c contain a string table */
/* based on the order of those definition. Keep it in sync */
#define UMSDOS_READDIR_DOS _IO(0x04,210) /* Do a readdir of the DOS directory */
#define UMSDOS_UNLINK_DOS _IO(0x04,211) /* Erase in the DOS directory only */
#define UMSDOS_RMDIR_DOS _IO(0x04,212) /* rmdir in the DOS directory only */
#define UMSDOS_STAT_DOS _IO(0x04,213) /* Get info about a file */
/* The next ioctl commands operate only on the EMD file */
#define UMSDOS_CREAT_EMD _IO(0x04,214) /* Create a file */
#define UMSDOS_UNLINK_EMD _IO(0x04,215) /* unlink (rmdir) a file */
#define UMSDOS_READDIR_EMD _IO(0x04,216) /* read the EMD file only. */
#define UMSDOS_GETVERSION _IO(0x04,217) /* Get the release number of UMSDOS */
#define UMSDOS_INIT_EMD _IO(0x04,218) /* Create the EMD file if not there */
#define UMSDOS_DOS_SETUP _IO(0x04,219) /* Set the defaults of the MsDOS driver */
#define UMSDOS_RENAME_DOS _IO(0x04,220) /* rename a file/directory in the DOS */
/* directory only */
struct umsdos_ioctl{
struct dirent dos_dirent;
struct umsdos_dirent umsdos_dirent;
/* The following structure is used to exchange some data */
/* with utilities (umsdos_progs/util/umsdosio.c). The first */
/* releases were using struct stat from "sys/stat.h". This was */
/* causing some problem for cross compilation of the kernel */
/* Since I am not really using the structure stat, but only some field */
/* of it, I have decided to replicate the structure here */
/* for compatibility with the binaries out there */
struct {
dev_t st_dev;
unsigned short __pad1;
ino_t st_ino;
umode_t st_mode;
nlink_t st_nlink;
uid_t st_uid;
gid_t st_gid;
dev_t st_rdev;
unsigned short __pad2;
off_t st_size;
unsigned long st_blksize;
unsigned long st_blocks;
time_t st_atime;
unsigned long __unused1;
time_t st_mtime;
unsigned long __unused2;
time_t st_ctime;
unsigned long __unused3;
unsigned long __unused4;
unsigned long __unused5;
}stat;
char version,release;
};
/* Different macros to access struct umsdos_dirent */
#define EDM_ENTRY_ISUSED(e) ((e)->name_len!=0)
#ifdef __KERNEL__
#ifndef LINUX_FS_H
#include <linux/fs.h>
#endif
extern struct inode_operations umsdos_dir_inode_operations;
extern struct file_operations umsdos_file_operations;
extern struct inode_operations umsdos_file_inode_operations;
extern struct inode_operations umsdos_file_inode_operations_no_bmap;
extern struct inode_operations umsdos_symlink_inode_operations;
extern int init_umsdos_fs(void);
#include <linux/umsdos_fs.p>
#endif /* __KERNEL__ */
#endif
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