kernel/include/vfs.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   6  *
   7  *  This program is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21
  22 #ifndef _VFS_H
  23 #define _VFS_H
  24
  25 #define VFS_FILEATTR_FILE       0x1
  26 #define VFS_FILEATTR_DIR        0x2
  27 #define VFS_FILEATTR_HIDDEN     0x4
  28 #define VFS_FILEATTR_SYSTEM     0x8
  29 #define VFS_FILEATTR_BIN        0x10
  30 #define VFS_FILEATTR_READ       0x20
  31 #define VFS_FILEATTR_WRITE      0x40
  32 #define VFS_FILEATTR_MOUNTED    0x80
  33 #define VFS_FILEATTR_DEVICE     0x100
  34
  35 #define VFS_FILENAME_LEN        10
  36 #define VFS_MOUNTPOINT_LEN      32
  37
  38 /* data container for virtual files */
  39 typedef struct {
  40         char *ptr;
  41         unsigned long len;
  42 } vfs_content_t;
  43
  44 /* Virtual filesystem structure */
  45 typedef struct vfs_context {
  46         struct vfs_context *next, *prev;
  47
  48         char *name;
  49         char mountpoint[VFS_MOUNTPOINT_LEN];
  50         unsigned attrib;
  51         vfs_content_t *content;
  52 } vfs_t;
  53
  54 /* structure for directory entries */
  55 typedef struct {
  56         char *name;
  57         unsigned attrib;
  58         unsigned char next;
  59         unsigned char unused;
  60 } __attribute__ ((__packed__)) vfs_dirent_t;
  61
  62 /* externs */
  63 extern vfs_t *vfs_list_find (char *name, char *mountpoint);
  64 extern vfs_t *vfs_list_findbymp (char *mountpoint);
  65 extern vfs_t *vfs_find (char *file, unsigned file_len);
  66 extern vfs_t *vfs_list_add (char *name, unsigned attrib, char *mountpoint);
  67 extern bool vfs_list_del (vfs_t *vfs);
  68 extern bool vfs_list_delbymp (char *mountpoint);
  69 extern int vfs_mmap (char *file, unsigned file_len, vfs_content_t *content);
  70 extern int vfs_read (char *file, unsigned file_len, vfs_content_t *content);
  71 extern int vfs_cat (char *file, unsigned file_len);
  72 extern int vfs_cp (char *what, unsigned what_len, char *where, unsigned where_len);
  73 extern int vfs_ls (char *file, unsigned file_len);
  74 extern int vfs_cd (char *file, unsigned file_len);
  75 extern int vfs_mkdir (char *file, unsigned file_len);
  76 extern int vfs_touch (char *file, unsigned file_len);
  77 extern int vfs_rm (char *file, unsigned file_len);
  78 extern vfs_dirent_t *vfs_dirent ();
  79 extern unsigned int init_vfs ();
  80
  81 #endif