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 
  20 struct umsdos_fake_info {
  21         char fname[13];
  22         int  len;
  23 };
  24 
  25 #define UMSDOS_MAXNAME  220
  26 /* This structure is 256 bytes large, depending on the name, only part */
  27 /* of it is written to disk */
  28 struct umsdos_dirent {
  29         unsigned char name_len; /* if == 0, then this entry is not used */
  30         unsigned char  flags;   /* UMSDOS_xxxx */
  31         unsigned short nlink;   /* How many hard links point to this entry */
  32         uid_t            uid;           /* Owner user id */
  33         gid_t            gid;           /* Group id */
  34         time_t          atime;          /* Access time */
  35         time_t          mtime;          /* Last modification time */
  36         time_t          ctime;          /* Creation time */
  37         dev_t           rdev;           /* major and minor number of a device */
  38                                                         /* special file */
  39         umode_t         mode;           /* Standard UNIX permissions bits + type of */
  40         char    spare[12];              /* unused bytes for future extensions */
  41                                                         /* file, see linux/stat.h */
  42         char name[UMSDOS_MAXNAME];      /* Not '\0' terminated */
  43                                                         /* but '\0' padded, so it will allow */
  44                                                         /* for adding news fields in this record */
  45                                                         /* by reducing the size of name[] */
  46 };
  47 #define UMSDOS_HIDDEN   1       /* Never show this entry in directory search */
  48 #define UMSDOS_HLINK    2       /* It is a (pseudo) hard link */
  49 
  50 /* #Specification: EMD file / record size
  51         Entry are 64 bytes wide in the EMD file. It allows for a 30 characters
  52         name. If a name is longer, contiguous entries are allocated. So a
  53         umsdos_dirent may span multiple records.
  54 */
  55 #define UMSDOS_REC_SIZE         64
  56 
  57 /* Translation between MSDOS name and UMSDOS name */
  58 struct umsdos_info{
  59         int msdos_reject;       /* Tell if the file name is invalid for MSDOS */
  60                                                 /* See umsdos_parse */
  61         struct umsdos_fake_info fake;
  62         struct umsdos_dirent entry;
  63         off_t f_pos;            /* offset of the entry in the EMD file */
  64                                                 /* or offset where the entry may be store */
  65                                                 /* if it is a new entry */
  66         int recsize;            /* Record size needed to store entry */
  67 };
  68 
  69 /* Definitions for ioctl (number randomly chosen) */
  70 /* The next ioctl commands operate only on the DOS directory */
  71 /* The file umsdos_progs/umsdosio.c contain a string table */
  72 /* based on the order of those definition. Keep it in sync */
  73 #define UMSDOS_READDIR_DOS      1234    /* Do a readdir of the DOS directory */
  74 #define UMSDOS_UNLINK_DOS       1235    /* Erase in the DOS directory only */
  75 #define UMSDOS_RMDIR_DOS        1236    /* rmdir in the DOS directory only */
  76 #define UMSDOS_STAT_DOS         1237    /* Get info about a file */
  77 /* The next ioctl commands operate only on the EMD file */
  78 #define UMSDOS_CREAT_EMD        1238    /* Create a file */
  79 #define UMSDOS_UNLINK_EMD       1239    /* unlink (rmdir) a file */
  80 #define UMSDOS_READDIR_EMD      1240    /* read the EMD file only. */
  81 #define UMSDOS_GETVERSION       1241    /* Get the release number of UMSDOS */
  82 #define UMSDOS_INIT_EMD         1242    /* Create the EMD file if not there */
  83 #define UMSDOS_DOS_SETUP        1243    /* Set the defaults of the MsDOS driver */
  84 
  85 #define UMSDOS_RENAME_DOS       1244    /* rename a file/directory in the DOS */
  86                                                                         /* directory only */
  87 struct umsdos_ioctl{
  88         struct dirent dos_dirent;
  89         struct umsdos_dirent umsdos_dirent;
  90         /* The following structure is used to exchange some data */
  91         /* with utilities (umsdos_progs/util/umsdosio.c). The first */
  92         /* releases were using struct stat from "sys/stat.h". This was */
  93         /* causing some problem for cross compilation of the kernel */
  94         /* Since I am not really using the structure stat, but only some field */
  95         /* of it, I have decided to replicate the structure here */
  96         /* for compatibility with the binaries out there */
  97         struct {
  98                 dev_t           st_dev;
  99                 unsigned short  __pad1;
 100                 ino_t           st_ino;
 101                 umode_t         st_mode;
 102                 nlink_t         st_nlink;
 103                 uid_t           st_uid;
 104                 gid_t           st_gid;
 105                 dev_t           st_rdev;
 106                 unsigned short  __pad2;
 107                 off_t           st_size;
 108                 unsigned long   st_blksize;
 109                 unsigned long   st_blocks;
 110                 time_t          st_atime;
 111                 unsigned long   __unused1;
 112                 time_t          st_mtime;
 113                 unsigned long   __unused2;
 114                 time_t          st_ctime;
 115                 unsigned long   __unused3;
 116                 unsigned long   __unused4;
 117                 unsigned long   __unused5;
 118         }stat;
 119         char version,release;
 120 };
 121 
 122 /* Different macros to access struct umsdos_dirent */
 123 #define EDM_ENTRY_ISUSED(e) ((e)->name_len!=0)
 124 
 125 #ifdef __KERNEL__
 126 
 127 #ifndef LINUX_FS_H
 128 #include <linux/fs.h>
 129 #endif
 130 
 131 extern struct inode_operations umsdos_dir_inode_operations;
 132 extern struct file_operations  umsdos_file_operations;
 133 extern struct inode_operations umsdos_file_inode_operations;
 134 extern struct inode_operations umsdos_file_inode_operations_no_bmap;
 135 extern struct inode_operations umsdos_symlink_inode_operations;
 136 
 137 #include <linux/umsdos_fs.p>
 138 
 139 #endif /* __KERNEL__ */
 140 
 141 #endif
/* */
root/include/linux/umsdos_fs.h

INCLUDED FROM
