fs/ocfs2/ocfs2_ioctl.h

   1 /* -*- mode: c; c-basic-offset: 8; -*-
   2  * vim: noexpandtab sw=8 ts=8 sts=0:
   3  *
   4  * ocfs2_ioctl.h
   5  *
   6  * Defines OCFS2 ioctls.
   7  *
   8  * Copyright (C) 2010 Oracle.  All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public
  12  * License, version 2, as published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  */
  19
  20 #ifndef OCFS2_IOCTL_H
  21 #define OCFS2_IOCTL_H
  22
  23 /*
  24  * ioctl commands
  25  */
  26 #define OCFS2_IOC_GETFLAGS      _IOR('f', 1, long)
  27 #define OCFS2_IOC_SETFLAGS      _IOW('f', 2, long)
  28 #define OCFS2_IOC32_GETFLAGS    _IOR('f', 1, int)
  29 #define OCFS2_IOC32_SETFLAGS    _IOW('f', 2, int)
  30
  31 /*
  32  * Space reservation / allocation / free ioctls and argument structure
  33  * are designed to be compatible with XFS.
  34  *
  35  * ALLOCSP* and FREESP* are not and will never be supported, but are
  36  * included here for completeness.
  37  */
  38 struct ocfs2_space_resv {
  39         __s16           l_type;
  40         __s16           l_whence;
  41         __s64           l_start;
  42         __s64           l_len;          /* len == 0 means until end of file */
  43         __s32           l_sysid;
  44         __u32           l_pid;
  45         __s32           l_pad[4];       /* reserve area                     */
  46 };
  47
  48 #define OCFS2_IOC_ALLOCSP               _IOW ('X', 10, struct ocfs2_space_resv)
  49 #define OCFS2_IOC_FREESP                _IOW ('X', 11, struct ocfs2_space_resv)
  50 #define OCFS2_IOC_RESVSP                _IOW ('X', 40, struct ocfs2_space_resv)
  51 #define OCFS2_IOC_UNRESVSP      _IOW ('X', 41, struct ocfs2_space_resv)
  52 #define OCFS2_IOC_ALLOCSP64     _IOW ('X', 36, struct ocfs2_space_resv)
  53 #define OCFS2_IOC_FREESP64      _IOW ('X', 37, struct ocfs2_space_resv)
  54 #define OCFS2_IOC_RESVSP64      _IOW ('X', 42, struct ocfs2_space_resv)
  55 #define OCFS2_IOC_UNRESVSP64    _IOW ('X', 43, struct ocfs2_space_resv)
  56
  57 /* Used to pass group descriptor data when online resize is done */
  58 struct ocfs2_new_group_input {
  59         __u64 group;            /* Group descriptor's blkno. */
  60         __u32 clusters;         /* Total number of clusters in this group */
  61         __u32 frees;            /* Total free clusters in this group */
  62         __u16 chain;            /* Chain for this group */
  63         __u16 reserved1;
  64         __u32 reserved2;
  65 };
  66
  67 #define OCFS2_IOC_GROUP_EXTEND  _IOW('o', 1, int)
  68 #define OCFS2_IOC_GROUP_ADD     _IOW('o', 2,struct ocfs2_new_group_input)
  69 #define OCFS2_IOC_GROUP_ADD64   _IOW('o', 3,struct ocfs2_new_group_input)
  70
  71 /* Used to pass 2 file names to reflink. */
  72 struct reflink_arguments {
  73         __u64 old_path;
  74         __u64 new_path;
  75         __u64 preserve;
  76 };
  77 #define OCFS2_IOC_REFLINK       _IOW('o', 4, struct reflink_arguments)
  78
  79 #endif /* OCFS2_IOCTL_H */