include/path.h

   1 /*
   2  * Copyright (c) 2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18 #ifndef __PATH_H__
  19 #define __PATH_H__
  20
  21 #include <xfs/xfs.h>
  22
  23 /*
  24  * XFS Filesystem Paths
  25  *
  26  * Utility routines for iterating and searching through the list
  27  * of known mounted filesystems and project paths.
  28  */
  29
  30 #define FS_MOUNT_POINT  (1<<0)
  31 #define FS_PROJECT_PATH (1<<1)
  32
  33 typedef struct fs_path {
  34         char            *fs_name;       /* Data device for filesystem   */
  35         dev_t           fs_datadev;
  36         char            *fs_log;        /* External log device, if any  */
  37         dev_t           fs_logdev;
  38         char            *fs_rt;         /* Realtime device, if any      */
  39         dev_t           fs_rtdev;
  40         char            *fs_dir;        /* Directory / mount point      */
  41         uint            fs_flags;       /* FS_{MOUNT_POINT,PROJECT_PATH}*/
  42         uint            fs_prid;        /* Project ID for tree root     */
  43 } fs_path_t;
  44
  45 extern int fs_count;            /* number of entries in fs table */
  46 extern fs_path_t *fs_table;     /* array of entries in fs table  */
  47 extern fs_path_t *fs_path;      /* current entry in the fs table */
  48 extern char *mtab_file;
  49
  50 extern void fs_table_initialise(void);
  51 extern void fs_table_destroy(void);
  52
  53 extern void fs_table_insert_mount(char *__mount);
  54 extern void fs_table_insert_project(char *__project);
  55
  56 extern fs_path_t *fs_table_lookup(const char *__dir, uint __flags);
  57
  58 typedef struct fs_cursor {
  59         uint            count;          /* total count of mount entries */
  60         uint            index;          /* current position in table    */
  61         uint            flags;          /* iterator flags: mounts/trees */
  62         fs_path_t       *table;         /* local/global table pointer   */
  63         fs_path_t       local;          /* space for single-entry table */
  64 } fs_cursor_t;
  65
  66 extern void fs_cursor_initialise(char *__dir, uint __flags, fs_cursor_t *__cp);
  67 extern fs_path_t *fs_cursor_next_entry(fs_cursor_t *__cp);
  68
  69 #endif  /* __PATH_H__ */