libfrog/paths.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6 #ifndef __LIBFROG_PATH_H__
   7 #define __LIBFROG_PATH_H__
   8
   9 #include "platform_defs.h"
  10
  11 /*
  12  * XFS Filesystem Paths
  13  *
  14  * Utility routines for iterating and searching through the list
  15  * of known mounted filesystems and project paths.
  16  */
  17
  18 #define FS_MOUNT_POINT  (1<<0)
  19 #define FS_PROJECT_PATH (1<<1)
  20 #define FS_FOREIGN      (1<<2)
  21
  22 typedef struct fs_path {
  23         char            *fs_name;       /* Data device for filesystem   */
  24         dev_t           fs_datadev;
  25         char            *fs_log;        /* External log device, if any  */
  26         dev_t           fs_logdev;
  27         char            *fs_rt;         /* Realtime device, if any      */
  28         dev_t           fs_rtdev;
  29         char            *fs_dir;        /* Directory / mount point      */
  30         uint            fs_flags;       /* FS_{MOUNT_POINT,PROJECT_PATH}*/
  31         uint            fs_prid;        /* Project ID for tree root     */
  32 } fs_path_t;
  33
  34 extern int fs_count;            /* number of entries in fs table */
  35 extern int xfs_fs_count;        /* number of xfs entries in fs table */
  36 extern fs_path_t *fs_table;     /* array of entries in fs table  */
  37 extern fs_path_t *fs_path;      /* current entry in the fs table */
  38 extern char *mtab_file;
  39
  40 extern void fs_table_initialise(int, char *[], int, char *[]);
  41 extern void fs_table_destroy(void);
  42
  43 extern void fs_table_insert_project_path(char *__dir, uint __projid);
  44
  45
  46 extern fs_path_t *fs_table_lookup(const char *__dir, uint __flags);
  47 extern fs_path_t *fs_table_lookup_mount(const char *__dir);
  48 extern fs_path_t *fs_table_lookup_blkdev(const char *bdev);
  49
  50 typedef struct fs_cursor {
  51         uint            count;          /* total count of mount entries */
  52         uint            index;          /* current position in table    */
  53         uint            flags;          /* iterator flags: mounts/trees */
  54         fs_path_t       *table;         /* local/global table pointer   */
  55         fs_path_t       local;          /* space for single-entry table */
  56 } fs_cursor_t;
  57
  58 extern void fs_cursor_initialise(char *__dir, uint __flags, fs_cursor_t *__cp);
  59 extern fs_path_t *fs_cursor_next_entry(fs_cursor_t *__cp);
  60
  61 #endif  /* __LIBFROG_PATH_H__ */