include/linux/umsdos

/* */
   1 #ifndef LINUX_UMSDOS_FS_H
   2 #define LINUX_UMSDOS_FS_H
   3 
   4 #define UMSDOS_VERSION  0
   5 #define UMSDOS_RELEASE  4
   6 
   7 /* This is the file acting as a directory extension */
   8 #define UMSDOS_EMD_FILE         "--linux-.---"
   9 #define UMSDOS_EMD_NAMELEN      12
  10 #define UMSDOS_PSDROOT_NAME     "linux"
  11 #define UMSDOS_PSDROOT_LEN      5
  12 
  13 #ifndef _LINUX_TYPES_H
  14 #include <linux/types.h>
  15 #endif
  16 #ifndef _LINUX_DIRENT_H
  17 #include <linux/dirent.h>
  18 #endif
  19 #ifndef _LINUX_IOCTL_H
  20 #include <linux/ioctl.h>
  21 #endif
  22 
  23 struct umsdos_fake_info {
  24         char fname[13];
  25         int  len;
  26 };
  27 
  28 #define UMSDOS_MAXNAME  220
  29 /* This structure is 256 bytes large, depending on the name, only part */
  30 /* of it is written to disk */
  31 struct umsdos_dirent {
  32         unsigned char name_len; /* if == 0, then this entry is not used */
  33         unsigned char  flags;   /* UMSDOS_xxxx */
  34         unsigned short nlink;   /* How many hard links point to this entry */
  35         uid_t            uid;           /* Owner user id */
  36         gid_t            gid;           /* Group id */
  37         time_t          atime;          /* Access time */
  38         time_t          mtime;          /* Last modification time */
  39         time_t          ctime;          /* Creation time */
  40         dev_t           rdev;           /* major and minor number of a device */
  41                                                         /* special file */
  42         umode_t         mode;           /* Standard UNIX permissions bits + type of */
  43         char    spare[12];              /* unused bytes for future extensions */
  44                                                         /* file, see linux/stat.h */
  45         char name[UMSDOS_MAXNAME];      /* Not '\0' terminated */
  46                                                         /* but '\0' padded, so it will allow */
  47                                                         /* for adding news fields in this record */
  48                                                         /* by reducing the size of name[] */
  49 };
  50 #define UMSDOS_HIDDEN   1       /* Never show this entry in directory search */
  51 #define UMSDOS_HLINK    2       /* It is a (pseudo) hard link */
  52 
  53 /* #Specification: EMD file / record size
  54         Entry are 64 bytes wide in the EMD file. It allows for a 30 characters
  55         name. If a name is longer, contiguous entries are allocated. So a
  56         umsdos_dirent may span multiple records.
  57 */
  58 #define UMSDOS_REC_SIZE         64
  59 
  60 /* Translation between MSDOS name and UMSDOS name */
  61 struct umsdos_info{
  62         int msdos_reject;       /* Tell if the file name is invalid for MSDOS */
  63                                                 /* See umsdos_parse */
  64         struct umsdos_fake_info fake;
  65         struct umsdos_dirent entry;
  66         off_t f_pos;            /* offset of the entry in the EMD file */
  67                                                 /* or offset where the entry may be store */
  68                                                 /* if it is a new entry */
  69         int recsize;            /* Record size needed to store entry */
  70 };
  71 
  72 /* Definitions for ioctl (number randomly chosen) */
  73 /* The next ioctl commands operate only on the DOS directory */
  74 /* The file umsdos_progs/umsdosio.c contain a string table */
  75 /* based on the order of those definition. Keep it in sync */
  76 #define UMSDOS_READDIR_DOS _IO(0x04,210) /* Do a readdir of the DOS directory */
  77 #define UMSDOS_UNLINK_DOS  _IO(0x04,211) /* Erase in the DOS directory only */
  78 #define UMSDOS_RMDIR_DOS   _IO(0x04,212) /* rmdir in the DOS directory only */
  79 #define UMSDOS_STAT_DOS    _IO(0x04,213) /* Get info about a file */
  80 /* The next ioctl commands operate only on the EMD file */
  81 #define UMSDOS_CREAT_EMD   _IO(0x04,214) /* Create a file */
  82 #define UMSDOS_UNLINK_EMD  _IO(0x04,215) /* unlink (rmdir) a file */
  83 #define UMSDOS_READDIR_EMD _IO(0x04,216) /* read the EMD file only. */
  84 #define UMSDOS_GETVERSION  _IO(0x04,217) /* Get the release number of UMSDOS */
  85 #define UMSDOS_INIT_EMD    _IO(0x04,218) /* Create the EMD file if not there */
  86 #define UMSDOS_DOS_SETUP   _IO(0x04,219) /* Set the defaults of the MsDOS driver */
  87 
  88 #define UMSDOS_RENAME_DOS  _IO(0x04,220) /* rename a file/directory in the DOS */
  89                                                                         /* directory only */
  90 struct umsdos_ioctl{
  91         struct dirent dos_dirent;
  92         struct umsdos_dirent umsdos_dirent;
  93         /* The following structure is used to exchange some data */
  94         /* with utilities (umsdos_progs/util/umsdosio.c). The first */
  95         /* releases were using struct stat from "sys/stat.h". This was */
  96         /* causing some problem for cross compilation of the kernel */
  97         /* Since I am not really using the structure stat, but only some field */
  98         /* of it, I have decided to replicate the structure here */
  99         /* for compatibility with the binaries out there */
 100         struct {
 101                 dev_t           st_dev;
 102                 unsigned short  __pad1;
 103                 ino_t           st_ino;
 104                 umode_t         st_mode;
 105                 nlink_t         st_nlink;
 106                 uid_t           st_uid;
 107                 gid_t           st_gid;
 108                 dev_t           st_rdev;
 109                 unsigned short  __pad2;
 110                 off_t           st_size;
 111                 unsigned long   st_blksize;
 112                 unsigned long   st_blocks;
 113                 time_t          st_atime;
 114                 unsigned long   __unused1;
 115                 time_t          st_mtime;
 116                 unsigned long   __unused2;
 117                 time_t          st_ctime;
 118                 unsigned long   __unused3;
 119                 unsigned long   __unused4;
 120                 unsigned long   __unused5;
 121         }stat;
 122         char version,release;
 123 };
 124 
 125 /* Different macros to access struct umsdos_dirent */
 126 #define EDM_ENTRY_ISUSED(e) ((e)->name_len!=0)
 127 
 128 #ifdef __KERNEL__
 129 
 130 #ifndef LINUX_FS_H
 131 #include <linux/fs.h>
 132 #endif
 133 
 134 extern struct inode_operations umsdos_dir_inode_operations;
 135 extern struct file_operations  umsdos_file_operations;
 136 extern struct inode_operations umsdos_file_inode_operations;
 137 extern struct inode_operations umsdos_file_inode_operations_no_bmap;
 138 extern struct inode_operations umsdos_symlink_inode_operations;
 139 extern int init_umsdos_fs(void);
 140 
 141 #include <linux/umsdos_fs.p>
 142 
 143 #endif /* __KERNEL__ */
 144 
 145 #endif
/* */
root/include/linux/umsdos_fs.h

INCLUDED FROM
