9df5778ece
Currently we were adding ioctl cmds/structures for ocfs2 into ocfs2_fs.h which was used for define ocfs2 on-disk layout. That sounds a little bit confusing, and it may be quickly polluted espcially when growing the ocfs2_info_request ioctls afterwards(it will grow i bet). As a result, such OCFS2 IOCs do need to be placed somewhere other than ocfs2_fs.h, a separated ocfs2_ioctl.h will be added to store such ioctl structures and definitions which could also be used from userspace to invoke ioctls call. Signed-off-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* ocfs2_ioctl.h
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*
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* Defines OCFS2 ioctls.
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*
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* Copyright (C) 2010 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License, version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#ifndef OCFS2_IOCTL_H
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#define OCFS2_IOCTL_H
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/*
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* ioctl commands
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*/
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#define OCFS2_IOC_GETFLAGS _IOR('f', 1, long)
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#define OCFS2_IOC_SETFLAGS _IOW('f', 2, long)
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#define OCFS2_IOC32_GETFLAGS _IOR('f', 1, int)
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#define OCFS2_IOC32_SETFLAGS _IOW('f', 2, int)
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/*
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* Space reservation / allocation / free ioctls and argument structure
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* are designed to be compatible with XFS.
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*
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* ALLOCSP* and FREESP* are not and will never be supported, but are
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* included here for completeness.
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*/
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struct ocfs2_space_resv {
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__s16 l_type;
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__s16 l_whence;
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__s64 l_start;
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__s64 l_len; /* len == 0 means until end of file */
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__s32 l_sysid;
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__u32 l_pid;
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__s32 l_pad[4]; /* reserve area */
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};
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#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv)
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#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv)
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#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv)
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#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv)
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#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv)
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#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv)
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#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv)
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#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv)
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/* Used to pass group descriptor data when online resize is done */
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struct ocfs2_new_group_input {
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__u64 group; /* Group descriptor's blkno. */
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__u32 clusters; /* Total number of clusters in this group */
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__u32 frees; /* Total free clusters in this group */
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__u16 chain; /* Chain for this group */
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__u16 reserved1;
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__u32 reserved2;
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};
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#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int)
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#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input)
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#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input)
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/* Used to pass 2 file names to reflink. */
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struct reflink_arguments {
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__u64 old_path;
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__u64 new_path;
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__u64 preserve;
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};
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#define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments)
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#endif /* OCFS2_IOCTL_H */
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