From 9df5778ecee8b301b447fc05706792d5f447ace5 Mon Sep 17 00:00:00 2001 From: Tristan Ye Date: Tue, 2 Mar 2010 13:59:42 +0800 Subject: Ocfs2: Move ocfs2 ioctl definitions from ocfs2_fs.h to newly added ocfs2_ioctl.h 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 Signed-off-by: Joel Becker --- fs/ocfs2/ocfs2_ioctl.h | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 fs/ocfs2/ocfs2_ioctl.h (limited to 'fs/ocfs2/ocfs2_ioctl.h') diff --git a/fs/ocfs2/ocfs2_ioctl.h b/fs/ocfs2/ocfs2_ioctl.h new file mode 100644 index 000000000000..2d3420af1a83 --- /dev/null +++ b/fs/ocfs2/ocfs2_ioctl.h @@ -0,0 +1,79 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * ocfs2_ioctl.h + * + * Defines OCFS2 ioctls. + * + * Copyright (C) 2010 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License, version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#ifndef OCFS2_IOCTL_H +#define OCFS2_IOCTL_H + +/* + * ioctl commands + */ +#define OCFS2_IOC_GETFLAGS _IOR('f', 1, long) +#define OCFS2_IOC_SETFLAGS _IOW('f', 2, long) +#define OCFS2_IOC32_GETFLAGS _IOR('f', 1, int) +#define OCFS2_IOC32_SETFLAGS _IOW('f', 2, int) + +/* + * Space reservation / allocation / free ioctls and argument structure + * are designed to be compatible with XFS. + * + * ALLOCSP* and FREESP* are not and will never be supported, but are + * included here for completeness. + */ +struct ocfs2_space_resv { + __s16 l_type; + __s16 l_whence; + __s64 l_start; + __s64 l_len; /* len == 0 means until end of file */ + __s32 l_sysid; + __u32 l_pid; + __s32 l_pad[4]; /* reserve area */ +}; + +#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv) +#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv) +#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv) +#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv) +#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv) +#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv) +#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv) +#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv) + +/* Used to pass group descriptor data when online resize is done */ +struct ocfs2_new_group_input { + __u64 group; /* Group descriptor's blkno. */ + __u32 clusters; /* Total number of clusters in this group */ + __u32 frees; /* Total free clusters in this group */ + __u16 chain; /* Chain for this group */ + __u16 reserved1; + __u32 reserved2; +}; + +#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int) +#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input) +#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input) + +/* Used to pass 2 file names to reflink. */ +struct reflink_arguments { + __u64 old_path; + __u64 new_path; + __u64 preserve; +}; +#define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments) + +#endif /* OCFS2_IOCTL_H */ -- cgit v1.2.3-70-g09d2