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#ifndef LINUX_UMSDOS_FS_H

#define LINUX_UMSDOS_FS_H

/*#define UMS_DEBUG 1   // define for check_* functions */

/*#define UMSDOS_DEBUG 1*/

#define UMSDOS_PARANOIA 1

#define UMSDOS_VERSION  0

#define UMSDOS_RELEASE  4

#define UMSDOS_ROOT_INO 1

/* 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_LIMITS_H

#include <linux/limits.h>

#endif

#ifndef _LINUX_DIRENT_H

#include <linux/dirent.h>

#endif

#ifndef _LINUX_IOCTL_H

#include <linux/ioctl.h>

#endif

#ifdef __KERNEL__

/* #Specification: convention / PRINTK Printk and printk

 * Here is the convention for the use of printk inside fs/umsdos

 *

 * printk carry important message (error or status).

 * Printk is for debugging (it is a macro defined at the beginning of

 * most source.

 * PRINTK is a nulled Printk macro.

 *

 * This convention makes the source easier to read, and Printk easier

 * to shut off.

 */

#       define PRINTK(x)

#       ifdef UMSDOS_DEBUG

#               define Printk(x) printk x

#       else

#               define Printk(x)

#       endif

#endif  /* __KERNEL__ */

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 */

/* nice though it would be, I can't change this and preserve backward compatibility */

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 */

        __kernel_uid_t uid;     /* Owner user id */

        __kernel_gid_t gid;     /* Group id */

        time_t atime;           /* Access time */

        time_t mtime;           /* Last modification time */

        time_t ctime;           /* Creation time */

        unsigned short rdev;    /* major and minor 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 MS-DOS 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 fields of it, I have decided to replicate the structure

         * here for compatibility with the binaries out there.

         * FIXME PTW 1998, this has probably changed

         */

        struct {

                unsigned long st_dev;

                ino_t st_ino;                   /* used */

                umode_t st_mode;                /* used */

                nlink_t st_nlink;

                __kernel_uid_t st_uid;

                __kernel_gid_t st_gid;

                unsigned long st_rdev;

                off_t st_size;                  /* used */

                unsigned long st_blksize;

                unsigned long st_blocks;

                time_t st_atime;                /* used */

                unsigned long __unused1;

                time_t st_mtime;                /* used */

                unsigned long __unused2;

                time_t st_ctime;                /* used */

                unsigned long __unused3;

                uid_t st_uid32;

                gid_t st_gid32;

        } 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 inode_operations umsdos_rdir_inode_operations;

extern struct file_operations umsdos_dir_operations;

extern struct file_operations umsdos_rdir_operations;

#include <linux/umsdos_fs.p>

#endif                          /* __KERNEL__ */

#endif