headers/os/kernel/fs_info.h

   1 /*
   2  * Copyright 2002-2016, Haiku Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _FS_INFO_H
   6 #define _FS_INFO_H
   7
   8 #include <OS.h>
   9
  10
  11 /* fs_info.flags */
  12 #define B_FS_IS_READONLY                0x00000001
  13 #define B_FS_IS_REMOVABLE               0x00000002
  14 #define B_FS_IS_PERSISTENT              0x00000004
  15 #define B_FS_IS_SHARED                  0x00000008
  16 #define B_FS_HAS_MIME                   0x00010000
  17 #define B_FS_HAS_ATTR                   0x00020000
  18 #define B_FS_HAS_QUERY                  0x00040000
  19 // those additions are preliminary and may be removed
  20 #define B_FS_HAS_SELF_HEALING_LINKS             0x00080000
  21 #define B_FS_HAS_ALIASES                                0x00100000
  22 #define B_FS_SUPPORTS_NODE_MONITORING   0x00200000
  23 #define B_FS_SUPPORTS_MONITOR_CHILDREN  0x00400000
  24
  25 typedef struct fs_info {
  26         dev_t   dev;                                                            /* volume dev_t */
  27         ino_t   root;                                                           /* root ino_t */
  28         uint32  flags;                                                          /* flags (see above) */
  29         off_t   block_size;                                                     /* fundamental block size */
  30         off_t   io_size;                                                        /* optimal i/o size */
  31         off_t   total_blocks;                                           /* total number of blocks */
  32         off_t   free_blocks;                                            /* number of free blocks */
  33         off_t   total_nodes;                                            /* total number of nodes */
  34         off_t   free_nodes;                                                     /* number of free nodes */
  35         char    device_name[128];                                       /* device holding fs */
  36         char    volume_name[B_FILE_NAME_LENGTH];        /* volume name */
  37         char    fsh_name[B_OS_NAME_LENGTH];                     /* name of fs handler */
  38 } fs_info;
  39
  40
  41 #ifdef  __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 extern dev_t    dev_for_path(const char *path);
  46 extern dev_t    next_dev(int32 *pos);
  47 extern int              fs_stat_dev(dev_t dev, fs_info *info);
  48
  49 #ifdef  __cplusplus
  50 }
  51 #endif
  52
  53 #endif  /* _FS_INFO_H */