include/path.h

   1 /*
   2  * Copyright (c) 2005 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __PATHS_H__
  33 #define __PATHS_H__
  34
  35 #include <xfs/libxfs.h>
  36
  37 /*
  38  * XFS Filesystem Paths
  39  *
  40  * Utility routines for iterating and searching through the list
  41  * of known mounted filesystems and project paths.
  42  */
  43
  44 #define FS_MOUNT_POINT  (1<<0)
  45 #define FS_PROJECT_PATH (1<<1)
  46
  47 typedef struct fs_path {
  48         char            *fs_name;       /* Data device for filesystem   */
  49         dev_t           fs_datadev;
  50         char            *fs_log;        /* External log device, if any  */
  51         dev_t           fs_logdev;
  52         char            *fs_rt;         /* Realtime device, if any      */
  53         dev_t           fs_rtdev;
  54         char            *fs_dir;        /* Directory / mount point      */
  55         uint            fs_flags;       /* FS_MOUNT_POINT/FS_MOUNT_TREE */
  56         uint            fs_prid;        /* Project ID for tree root     */
  57 } fs_path_t;
  58
  59 extern int fs_count;            /* number of entries in fs table */
  60 extern fs_path_t *fs_table;     /* array of entries in fs table  */
  61 extern fs_path_t *fs_path;      /* current entry in the fs table */
  62 extern char *mtab_file;
  63
  64 extern void fs_table_initialise(void);
  65 extern void fs_table_destroy(void);
  66
  67 extern void fs_table_insert_mount(char *__mount);
  68 extern void fs_table_insert_project(char *__project);
  69
  70 extern fs_path_t *fs_table_lookup(const char *__dir, uint __flags);
  71
  72 typedef struct fs_cursor {
  73         uint            count;          /* total count of mount entries */
  74         uint            index;          /* current position in table    */
  75         uint            flags;          /* iterator flags: mounts/trees */
  76         fs_path_t       *table;         /* local/global table pointer   */
  77         fs_path_t       local;          /* space for single-entry table */
  78 } fs_cursor_t;
  79
  80 extern void fs_cursor_initialise(char *__dir, uint __flags, fs_cursor_t *__cp);
  81 extern fs_path_t *fs_cursor_next_entry(fs_cursor_t *__cp);
  82
  83 #endif  /* __PATHS_H__ */