mirror of
https://github.com/torvalds/linux.git
synced 2024-11-10 22:21:40 +00:00
6fac0cb46b
SGI-PV: 933551 SGI-Modid: xfs-linux:xfs-kern:190622a Signed-off-by: Dean Roehrich <roehrich@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
217 lines
6.5 KiB
C
217 lines
6.5 KiB
C
/*
|
|
* Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* Further, this software is distributed without any warranty that it is
|
|
* free of the rightful claim of any third person regarding infringement
|
|
* or the like. Any license provided herein, whether implied or
|
|
* otherwise, applies only to this software file. Patent licenses, if
|
|
* any, provided herein do not apply to combinations of this program with
|
|
* other software, or any other product whatsoever.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write the Free Software Foundation, Inc., 59
|
|
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*
|
|
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
|
|
* Mountain View, CA 94043, or:
|
|
*
|
|
* http://www.sgi.com
|
|
*
|
|
* For further information regarding this notice, see:
|
|
*
|
|
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
|
|
*/
|
|
#ifndef __XFS_DMAPI_H__
|
|
#define __XFS_DMAPI_H__
|
|
|
|
/* Values used to define the on-disk version of dm_attrname_t. All
|
|
* on-disk attribute names start with the 8-byte string "SGI_DMI_".
|
|
*
|
|
* In the on-disk inode, DMAPI attribute names consist of the user-provided
|
|
* name with the DMATTR_PREFIXSTRING pre-pended. This string must NEVER be
|
|
* changed.
|
|
*/
|
|
|
|
#define DMATTR_PREFIXLEN 8
|
|
#define DMATTR_PREFIXSTRING "SGI_DMI_"
|
|
|
|
typedef enum {
|
|
DM_EVENT_INVALID = -1,
|
|
DM_EVENT_CANCEL = 0, /* not supported */
|
|
DM_EVENT_MOUNT = 1,
|
|
DM_EVENT_PREUNMOUNT = 2,
|
|
DM_EVENT_UNMOUNT = 3,
|
|
DM_EVENT_DEBUT = 4, /* not supported */
|
|
DM_EVENT_CREATE = 5,
|
|
DM_EVENT_CLOSE = 6, /* not supported */
|
|
DM_EVENT_POSTCREATE = 7,
|
|
DM_EVENT_REMOVE = 8,
|
|
DM_EVENT_POSTREMOVE = 9,
|
|
DM_EVENT_RENAME = 10,
|
|
DM_EVENT_POSTRENAME = 11,
|
|
DM_EVENT_LINK = 12,
|
|
DM_EVENT_POSTLINK = 13,
|
|
DM_EVENT_SYMLINK = 14,
|
|
DM_EVENT_POSTSYMLINK = 15,
|
|
DM_EVENT_READ = 16,
|
|
DM_EVENT_WRITE = 17,
|
|
DM_EVENT_TRUNCATE = 18,
|
|
DM_EVENT_ATTRIBUTE = 19,
|
|
DM_EVENT_DESTROY = 20,
|
|
DM_EVENT_NOSPACE = 21,
|
|
DM_EVENT_USER = 22,
|
|
DM_EVENT_MAX = 23
|
|
} dm_eventtype_t;
|
|
#define HAVE_DM_EVENTTYPE_T
|
|
|
|
typedef enum {
|
|
DM_RIGHT_NULL,
|
|
DM_RIGHT_SHARED,
|
|
DM_RIGHT_EXCL
|
|
} dm_right_t;
|
|
#define HAVE_DM_RIGHT_T
|
|
|
|
/* Defines for determining if an event message should be sent. */
|
|
#define DM_EVENT_ENABLED(vfsp, ip, event) ( \
|
|
unlikely ((vfsp)->vfs_flag & VFS_DMI) && \
|
|
( ((ip)->i_d.di_dmevmask & (1 << event)) || \
|
|
((ip)->i_mount->m_dmevmask & (1 << event)) ) \
|
|
)
|
|
|
|
#define DM_EVENT_ENABLED_IO(vfsp, io, event) ( \
|
|
unlikely ((vfsp)->vfs_flag & VFS_DMI) && \
|
|
( ((io)->io_dmevmask & (1 << event)) || \
|
|
((io)->io_mount->m_dmevmask & (1 << event)) ) \
|
|
)
|
|
|
|
#define DM_XFS_VALID_FS_EVENTS ( \
|
|
(1 << DM_EVENT_PREUNMOUNT) | \
|
|
(1 << DM_EVENT_UNMOUNT) | \
|
|
(1 << DM_EVENT_NOSPACE) | \
|
|
(1 << DM_EVENT_DEBUT) | \
|
|
(1 << DM_EVENT_CREATE) | \
|
|
(1 << DM_EVENT_POSTCREATE) | \
|
|
(1 << DM_EVENT_REMOVE) | \
|
|
(1 << DM_EVENT_POSTREMOVE) | \
|
|
(1 << DM_EVENT_RENAME) | \
|
|
(1 << DM_EVENT_POSTRENAME) | \
|
|
(1 << DM_EVENT_LINK) | \
|
|
(1 << DM_EVENT_POSTLINK) | \
|
|
(1 << DM_EVENT_SYMLINK) | \
|
|
(1 << DM_EVENT_POSTSYMLINK) | \
|
|
(1 << DM_EVENT_ATTRIBUTE) | \
|
|
(1 << DM_EVENT_DESTROY) )
|
|
|
|
/* Events valid in dm_set_eventlist() when called with a file handle for
|
|
a regular file or a symlink. These events are persistent.
|
|
*/
|
|
|
|
#define DM_XFS_VALID_FILE_EVENTS ( \
|
|
(1 << DM_EVENT_ATTRIBUTE) | \
|
|
(1 << DM_EVENT_DESTROY) )
|
|
|
|
/* Events valid in dm_set_eventlist() when called with a file handle for
|
|
a directory. These events are persistent.
|
|
*/
|
|
|
|
#define DM_XFS_VALID_DIRECTORY_EVENTS ( \
|
|
(1 << DM_EVENT_CREATE) | \
|
|
(1 << DM_EVENT_POSTCREATE) | \
|
|
(1 << DM_EVENT_REMOVE) | \
|
|
(1 << DM_EVENT_POSTREMOVE) | \
|
|
(1 << DM_EVENT_RENAME) | \
|
|
(1 << DM_EVENT_POSTRENAME) | \
|
|
(1 << DM_EVENT_LINK) | \
|
|
(1 << DM_EVENT_POSTLINK) | \
|
|
(1 << DM_EVENT_SYMLINK) | \
|
|
(1 << DM_EVENT_POSTSYMLINK) | \
|
|
(1 << DM_EVENT_ATTRIBUTE) | \
|
|
(1 << DM_EVENT_DESTROY) )
|
|
|
|
/* Events supported by the XFS filesystem. */
|
|
#define DM_XFS_SUPPORTED_EVENTS ( \
|
|
(1 << DM_EVENT_MOUNT) | \
|
|
(1 << DM_EVENT_PREUNMOUNT) | \
|
|
(1 << DM_EVENT_UNMOUNT) | \
|
|
(1 << DM_EVENT_NOSPACE) | \
|
|
(1 << DM_EVENT_CREATE) | \
|
|
(1 << DM_EVENT_POSTCREATE) | \
|
|
(1 << DM_EVENT_REMOVE) | \
|
|
(1 << DM_EVENT_POSTREMOVE) | \
|
|
(1 << DM_EVENT_RENAME) | \
|
|
(1 << DM_EVENT_POSTRENAME) | \
|
|
(1 << DM_EVENT_LINK) | \
|
|
(1 << DM_EVENT_POSTLINK) | \
|
|
(1 << DM_EVENT_SYMLINK) | \
|
|
(1 << DM_EVENT_POSTSYMLINK) | \
|
|
(1 << DM_EVENT_READ) | \
|
|
(1 << DM_EVENT_WRITE) | \
|
|
(1 << DM_EVENT_TRUNCATE) | \
|
|
(1 << DM_EVENT_ATTRIBUTE) | \
|
|
(1 << DM_EVENT_DESTROY) )
|
|
|
|
|
|
/*
|
|
* Definitions used for the flags field on dm_send_*_event().
|
|
*/
|
|
|
|
#define DM_FLAGS_NDELAY 0x001 /* return EAGAIN after dm_pending() */
|
|
#define DM_FLAGS_UNWANTED 0x002 /* event not in fsys dm_eventset_t */
|
|
#define DM_FLAGS_ISEM 0x004 /* thread holds i_sem */
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
|
|
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21)
|
|
/* i_alloc_sem was added in 2.4.22-pre1 */
|
|
#define DM_FLAGS_IALLOCSEM_RD 0x010 /* thread holds i_alloc_sem rd */
|
|
#define DM_FLAGS_IALLOCSEM_WR 0x020 /* thread holds i_alloc_sem wr */
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* Based on IO_ISDIRECT, decide which i_ flag is set.
|
|
*/
|
|
#ifdef DM_FLAGS_IALLOCSEM_RD
|
|
#define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \
|
|
DM_FLAGS_IALLOCSEM_RD : DM_FLAGS_ISEM)
|
|
#define DM_SEM_FLAG_WR (DM_FLAGS_IALLOCSEM_WR | DM_FLAGS_ISEM)
|
|
#else
|
|
#define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \
|
|
0 : DM_FLAGS_ISEM)
|
|
#define DM_SEM_FLAG_WR (DM_FLAGS_ISEM)
|
|
#endif
|
|
|
|
/*
|
|
* Macros to turn caller specified delay/block flags into
|
|
* dm_send_xxxx_event flag DM_FLAGS_NDELAY.
|
|
*/
|
|
|
|
#define FILP_DELAY_FLAG(filp) ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) ? \
|
|
DM_FLAGS_NDELAY : 0)
|
|
#define AT_DELAY_FLAG(f) ((f&ATTR_NONBLOCK) ? DM_FLAGS_NDELAY : 0)
|
|
|
|
|
|
extern struct bhv_vfsops xfs_dmops;
|
|
|
|
#ifdef CONFIG_XFS_DMAPI
|
|
void xfs_dm_init(struct file_system_type *);
|
|
void xfs_dm_exit(struct file_system_type *);
|
|
#define XFS_DM_INIT(fstype) xfs_dm_init(fstype)
|
|
#define XFS_DM_EXIT(fstype) xfs_dm_exit(fstype)
|
|
#else
|
|
#define XFS_DM_INIT(fstype)
|
|
#define XFS_DM_EXIT(fstype)
|
|
#endif
|
|
|
|
#define HAVE_XFS_DM_MM
|
|
int xfs_dm_mm_get(struct vm_area_struct *vma);
|
|
void xfs_dm_mm_put(struct vm_area_struct *vma);
|
|
|
|
#endif /* __XFS_DMAPI_H__ */
|