xref: /openbmc/linux/fs/xfs/libxfs/xfs_fs.h (revision 5927145e)
1 /*
2  * Copyright (c) 1995-2005 Silicon Graphics, Inc.
3  * All Rights Reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public License
7  * as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it would be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public License
15  * along with this program; if not, write the Free Software Foundation,
16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17  */
18 #ifndef __XFS_FS_H__
19 #define __XFS_FS_H__
20 
21 /*
22  * SGI's XFS filesystem's major stuff (constants, structures)
23  */
24 
25 /*
26  * Direct I/O attribute record used with XFS_IOC_DIOINFO
27  * d_miniosz is the min xfer size, xfer size multiple and file seek offset
28  * alignment.
29  */
30 #ifndef HAVE_DIOATTR
31 struct dioattr {
32 	__u32		d_mem;		/* data buffer memory alignment */
33 	__u32		d_miniosz;	/* min xfer size		*/
34 	__u32		d_maxiosz;	/* max xfer size		*/
35 };
36 #endif
37 
38 /*
39  * Structure for XFS_IOC_GETBMAP.
40  * On input, fill in bmv_offset and bmv_length of the first structure
41  * to indicate the area of interest in the file, and bmv_entries with
42  * the number of array elements given back.  The first structure is
43  * updated on return to give the offset and length for the next call.
44  */
45 #ifndef HAVE_GETBMAP
46 struct getbmap {
47 	__s64		bmv_offset;	/* file offset of segment in blocks */
48 	__s64		bmv_block;	/* starting block (64-bit daddr_t)  */
49 	__s64		bmv_length;	/* length of segment, blocks	    */
50 	__s32		bmv_count;	/* # of entries in array incl. 1st  */
51 	__s32		bmv_entries;	/* # of entries filled in (output)  */
52 };
53 #endif
54 
55 /*
56  *	Structure for XFS_IOC_GETBMAPX.	 Fields bmv_offset through bmv_entries
57  *	are used exactly as in the getbmap structure.  The getbmapx structure
58  *	has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
59  *	is only used for the first structure.  It contains input flags
60  *	specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled
61  *	in by the XFS_IOC_GETBMAPX command for each returned structure after
62  *	the first.
63  */
64 #ifndef HAVE_GETBMAPX
65 struct getbmapx {
66 	__s64		bmv_offset;	/* file offset of segment in blocks */
67 	__s64		bmv_block;	/* starting block (64-bit daddr_t)  */
68 	__s64		bmv_length;	/* length of segment, blocks	    */
69 	__s32		bmv_count;	/* # of entries in array incl. 1st  */
70 	__s32		bmv_entries;	/* # of entries filled in (output). */
71 	__s32		bmv_iflags;	/* input flags (1st structure)	    */
72 	__s32		bmv_oflags;	/* output flags (after 1st structure)*/
73 	__s32		bmv_unused1;	/* future use			    */
74 	__s32		bmv_unused2;	/* future use			    */
75 };
76 #endif
77 
78 /*	bmv_iflags values - set by XFS_IOC_GETBMAPX caller.	*/
79 #define BMV_IF_ATTRFORK		0x1	/* return attr fork rather than data */
80 #define BMV_IF_NO_DMAPI_READ	0x2	/* Do not generate DMAPI read event  */
81 #define BMV_IF_PREALLOC		0x4	/* rtn status BMV_OF_PREALLOC if req */
82 #define BMV_IF_DELALLOC		0x8	/* rtn status BMV_OF_DELALLOC if req */
83 #define BMV_IF_NO_HOLES		0x10	/* Do not return holes */
84 #define BMV_IF_COWFORK		0x20	/* return CoW fork rather than data */
85 #define BMV_IF_VALID	\
86 	(BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|	\
87 	 BMV_IF_DELALLOC|BMV_IF_NO_HOLES|BMV_IF_COWFORK)
88 
89 /*	bmv_oflags values - returned for each non-header segment */
90 #define BMV_OF_PREALLOC		0x1	/* segment = unwritten pre-allocation */
91 #define BMV_OF_DELALLOC		0x2	/* segment = delayed allocation */
92 #define BMV_OF_LAST		0x4	/* segment is the last in the file */
93 #define BMV_OF_SHARED		0x8	/* segment shared with another file */
94 
95 /*	fmr_owner special values for FS_IOC_GETFSMAP */
96 #define XFS_FMR_OWN_FREE	FMR_OWN_FREE      /* free space */
97 #define XFS_FMR_OWN_UNKNOWN	FMR_OWN_UNKNOWN   /* unknown owner */
98 #define XFS_FMR_OWN_FS		FMR_OWNER('X', 1) /* static fs metadata */
99 #define XFS_FMR_OWN_LOG		FMR_OWNER('X', 2) /* journalling log */
100 #define XFS_FMR_OWN_AG		FMR_OWNER('X', 3) /* per-AG metadata */
101 #define XFS_FMR_OWN_INOBT	FMR_OWNER('X', 4) /* inode btree blocks */
102 #define XFS_FMR_OWN_INODES	FMR_OWNER('X', 5) /* inodes */
103 #define XFS_FMR_OWN_REFC	FMR_OWNER('X', 6) /* refcount tree */
104 #define XFS_FMR_OWN_COW		FMR_OWNER('X', 7) /* cow staging */
105 #define XFS_FMR_OWN_DEFECTIVE	FMR_OWNER('X', 8) /* bad blocks */
106 
107 /*
108  * Structure for XFS_IOC_FSSETDM.
109  * For use by backup and restore programs to set the XFS on-disk inode
110  * fields di_dmevmask and di_dmstate.  These must be set to exactly and
111  * only values previously obtained via xfs_bulkstat!  (Specifically the
112  * xfs_bstat_t fields bs_dmevmask and bs_dmstate.)
113  */
114 #ifndef HAVE_FSDMIDATA
115 struct fsdmidata {
116 	__u32		fsd_dmevmask;	/* corresponds to di_dmevmask */
117 	__u16		fsd_padding;
118 	__u16		fsd_dmstate;	/* corresponds to di_dmstate  */
119 };
120 #endif
121 
122 /*
123  * File segment locking set data type for 64 bit access.
124  * Also used for all the RESV/FREE interfaces.
125  */
126 typedef struct xfs_flock64 {
127 	__s16		l_type;
128 	__s16		l_whence;
129 	__s64		l_start;
130 	__s64		l_len;		/* len == 0 means until end of file */
131 	__s32		l_sysid;
132 	__u32		l_pid;
133 	__s32		l_pad[4];	/* reserve area			    */
134 } xfs_flock64_t;
135 
136 /*
137  * Output for XFS_IOC_FSGEOMETRY_V1
138  */
139 typedef struct xfs_fsop_geom_v1 {
140 	__u32		blocksize;	/* filesystem (data) block size */
141 	__u32		rtextsize;	/* realtime extent size		*/
142 	__u32		agblocks;	/* fsblocks in an AG		*/
143 	__u32		agcount;	/* number of allocation groups	*/
144 	__u32		logblocks;	/* fsblocks in the log		*/
145 	__u32		sectsize;	/* (data) sector size, bytes	*/
146 	__u32		inodesize;	/* inode size in bytes		*/
147 	__u32		imaxpct;	/* max allowed inode space(%)	*/
148 	__u64		datablocks;	/* fsblocks in data subvolume	*/
149 	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
150 	__u64		rtextents;	/* rt extents in realtime subvol*/
151 	__u64		logstart;	/* starting fsblock of the log	*/
152 	unsigned char	uuid[16];	/* unique id of the filesystem	*/
153 	__u32		sunit;		/* stripe unit, fsblocks	*/
154 	__u32		swidth;		/* stripe width, fsblocks	*/
155 	__s32		version;	/* structure version		*/
156 	__u32		flags;		/* superblock version flags	*/
157 	__u32		logsectsize;	/* log sector size, bytes	*/
158 	__u32		rtsectsize;	/* realtime sector size, bytes	*/
159 	__u32		dirblocksize;	/* directory block size, bytes	*/
160 } xfs_fsop_geom_v1_t;
161 
162 /*
163  * Output for XFS_IOC_FSGEOMETRY
164  */
165 typedef struct xfs_fsop_geom {
166 	__u32		blocksize;	/* filesystem (data) block size */
167 	__u32		rtextsize;	/* realtime extent size		*/
168 	__u32		agblocks;	/* fsblocks in an AG		*/
169 	__u32		agcount;	/* number of allocation groups	*/
170 	__u32		logblocks;	/* fsblocks in the log		*/
171 	__u32		sectsize;	/* (data) sector size, bytes	*/
172 	__u32		inodesize;	/* inode size in bytes		*/
173 	__u32		imaxpct;	/* max allowed inode space(%)	*/
174 	__u64		datablocks;	/* fsblocks in data subvolume	*/
175 	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
176 	__u64		rtextents;	/* rt extents in realtime subvol*/
177 	__u64		logstart;	/* starting fsblock of the log	*/
178 	unsigned char	uuid[16];	/* unique id of the filesystem	*/
179 	__u32		sunit;		/* stripe unit, fsblocks	*/
180 	__u32		swidth;		/* stripe width, fsblocks	*/
181 	__s32		version;	/* structure version		*/
182 	__u32		flags;		/* superblock version flags	*/
183 	__u32		logsectsize;	/* log sector size, bytes	*/
184 	__u32		rtsectsize;	/* realtime sector size, bytes	*/
185 	__u32		dirblocksize;	/* directory block size, bytes	*/
186 	__u32		logsunit;	/* log stripe unit, bytes */
187 } xfs_fsop_geom_t;
188 
189 /* Output for XFS_FS_COUNTS */
190 typedef struct xfs_fsop_counts {
191 	__u64	freedata;	/* free data section blocks */
192 	__u64	freertx;	/* free rt extents */
193 	__u64	freeino;	/* free inodes */
194 	__u64	allocino;	/* total allocated inodes */
195 } xfs_fsop_counts_t;
196 
197 /* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
198 typedef struct xfs_fsop_resblks {
199 	__u64  resblks;
200 	__u64  resblks_avail;
201 } xfs_fsop_resblks_t;
202 
203 #define XFS_FSOP_GEOM_VERSION	0
204 
205 #define XFS_FSOP_GEOM_FLAGS_ATTR	0x0001	/* attributes in use	*/
206 #define XFS_FSOP_GEOM_FLAGS_NLINK	0x0002	/* 32-bit nlink values	*/
207 #define XFS_FSOP_GEOM_FLAGS_QUOTA	0x0004	/* quotas enabled	*/
208 #define XFS_FSOP_GEOM_FLAGS_IALIGN	0x0008	/* inode alignment	*/
209 #define XFS_FSOP_GEOM_FLAGS_DALIGN	0x0010	/* large data alignment */
210 #define XFS_FSOP_GEOM_FLAGS_SHARED	0x0020	/* read-only shared	*/
211 #define XFS_FSOP_GEOM_FLAGS_EXTFLG	0x0040	/* special extent flag	*/
212 #define XFS_FSOP_GEOM_FLAGS_DIRV2	0x0080	/* directory version 2	*/
213 #define XFS_FSOP_GEOM_FLAGS_LOGV2	0x0100	/* log format version 2	*/
214 #define XFS_FSOP_GEOM_FLAGS_SECTOR	0x0200	/* sector sizes >1BB	*/
215 #define XFS_FSOP_GEOM_FLAGS_ATTR2	0x0400	/* inline attributes rework */
216 #define XFS_FSOP_GEOM_FLAGS_PROJID32	0x0800	/* 32-bit project IDs	*/
217 #define XFS_FSOP_GEOM_FLAGS_DIRV2CI	0x1000	/* ASCII only CI names	*/
218 #define XFS_FSOP_GEOM_FLAGS_LAZYSB	0x4000	/* lazy superblock counters */
219 #define XFS_FSOP_GEOM_FLAGS_V5SB	0x8000	/* version 5 superblock */
220 #define XFS_FSOP_GEOM_FLAGS_FTYPE	0x10000	/* inode directory types */
221 #define XFS_FSOP_GEOM_FLAGS_FINOBT	0x20000	/* free inode btree */
222 #define XFS_FSOP_GEOM_FLAGS_SPINODES	0x40000	/* sparse inode chunks	*/
223 #define XFS_FSOP_GEOM_FLAGS_RMAPBT	0x80000	/* reverse mapping btree */
224 #define XFS_FSOP_GEOM_FLAGS_REFLINK	0x100000 /* files can share blocks */
225 
226 /*
227  * Minimum and maximum sizes need for growth checks.
228  *
229  * Block counts are in units of filesystem blocks, not basic blocks.
230  */
231 #define XFS_MIN_AG_BLOCKS	64
232 #define XFS_MIN_LOG_BLOCKS	512ULL
233 #define XFS_MAX_LOG_BLOCKS	(1024 * 1024ULL)
234 #define XFS_MIN_LOG_BYTES	(10 * 1024 * 1024ULL)
235 
236 /*
237  * Limits on sb_agblocks/sb_agblklog -- mkfs won't format AGs smaller than
238  * 16MB or larger than 1TB.
239  */
240 #define XFS_MIN_AG_BYTES	(1ULL << 24)	/* 16 MB */
241 #define XFS_MAX_AG_BYTES	(1ULL << 40)	/* 1 TB */
242 
243 /* keep the maximum size under 2^31 by a small amount */
244 #define XFS_MAX_LOG_BYTES \
245 	((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
246 
247 /* Used for sanity checks on superblock */
248 #define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * (s)->sb_agblocks)
249 #define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *	\
250 			 (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
251 
252 /*
253  * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
254  */
255 typedef struct xfs_growfs_data {
256 	__u64		newblocks;	/* new data subvol size, fsblocks */
257 	__u32		imaxpct;	/* new inode space percentage limit */
258 } xfs_growfs_data_t;
259 
260 typedef struct xfs_growfs_log {
261 	__u32		newblocks;	/* new log size, fsblocks */
262 	__u32		isint;		/* 1 if new log is internal */
263 } xfs_growfs_log_t;
264 
265 typedef struct xfs_growfs_rt {
266 	__u64		newblocks;	/* new realtime size, fsblocks */
267 	__u32		extsize;	/* new realtime extent size, fsblocks */
268 } xfs_growfs_rt_t;
269 
270 
271 /*
272  * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
273  */
274 typedef struct xfs_bstime {
275 	time_t		tv_sec;		/* seconds		*/
276 	__s32		tv_nsec;	/* and nanoseconds	*/
277 } xfs_bstime_t;
278 
279 typedef struct xfs_bstat {
280 	__u64		bs_ino;		/* inode number			*/
281 	__u16		bs_mode;	/* type and mode		*/
282 	__u16		bs_nlink;	/* number of links		*/
283 	__u32		bs_uid;		/* user id			*/
284 	__u32		bs_gid;		/* group id			*/
285 	__u32		bs_rdev;	/* device value			*/
286 	__s32		bs_blksize;	/* block size			*/
287 	__s64		bs_size;	/* file size			*/
288 	xfs_bstime_t	bs_atime;	/* access time			*/
289 	xfs_bstime_t	bs_mtime;	/* modify time			*/
290 	xfs_bstime_t	bs_ctime;	/* inode change time		*/
291 	int64_t		bs_blocks;	/* number of blocks		*/
292 	__u32		bs_xflags;	/* extended flags		*/
293 	__s32		bs_extsize;	/* extent size			*/
294 	__s32		bs_extents;	/* number of extents		*/
295 	__u32		bs_gen;		/* generation count		*/
296 	__u16		bs_projid_lo;	/* lower part of project id	*/
297 #define	bs_projid	bs_projid_lo	/* (previously just bs_projid)	*/
298 	__u16		bs_forkoff;	/* inode fork offset in bytes	*/
299 	__u16		bs_projid_hi;	/* higher part of project id	*/
300 	unsigned char	bs_pad[6];	/* pad space, unused		*/
301 	__u32		bs_cowextsize;	/* cow extent size		*/
302 	__u32		bs_dmevmask;	/* DMIG event mask		*/
303 	__u16		bs_dmstate;	/* DMIG state info		*/
304 	__u16		bs_aextents;	/* attribute number of extents	*/
305 } xfs_bstat_t;
306 
307 /*
308  * Project quota id helpers (previously projid was 16bit only
309  * and using two 16bit values to hold new 32bit projid was choosen
310  * to retain compatibility with "old" filesystems).
311  */
312 static inline uint32_t
313 bstat_get_projid(struct xfs_bstat *bs)
314 {
315 	return (uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
316 }
317 
318 /*
319  * The user-level BulkStat Request interface structure.
320  */
321 typedef struct xfs_fsop_bulkreq {
322 	__u64		__user *lastip;	/* last inode # pointer		*/
323 	__s32		icount;		/* count of entries in buffer	*/
324 	void		__user *ubuffer;/* user buffer for inode desc.	*/
325 	__s32		__user *ocount;	/* output count pointer		*/
326 } xfs_fsop_bulkreq_t;
327 
328 
329 /*
330  * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
331  */
332 typedef struct xfs_inogrp {
333 	__u64		xi_startino;	/* starting inode number	*/
334 	__s32		xi_alloccount;	/* # bits set in allocmask	*/
335 	__u64		xi_allocmask;	/* mask of allocated inodes	*/
336 } xfs_inogrp_t;
337 
338 
339 /*
340  * Error injection.
341  */
342 typedef struct xfs_error_injection {
343 	__s32		fd;
344 	__s32		errtag;
345 } xfs_error_injection_t;
346 
347 
348 /*
349  * Speculative preallocation trimming.
350  */
351 #define XFS_EOFBLOCKS_VERSION		1
352 struct xfs_fs_eofblocks {
353 	__u32		eof_version;
354 	__u32		eof_flags;
355 	uid_t		eof_uid;
356 	gid_t		eof_gid;
357 	prid_t		eof_prid;
358 	__u32		pad32;
359 	__u64		eof_min_file_size;
360 	__u64		pad64[12];
361 };
362 
363 /* eof_flags values */
364 #define XFS_EOF_FLAGS_SYNC		(1 << 0) /* sync/wait mode scan */
365 #define XFS_EOF_FLAGS_UID		(1 << 1) /* filter by uid */
366 #define XFS_EOF_FLAGS_GID		(1 << 2) /* filter by gid */
367 #define XFS_EOF_FLAGS_PRID		(1 << 3) /* filter by project id */
368 #define XFS_EOF_FLAGS_MINFILESIZE	(1 << 4) /* filter by min file size */
369 #define XFS_EOF_FLAGS_UNION		(1 << 5) /* union filter algorithm;
370 						  * kernel only, not included in
371 						  * valid mask */
372 #define XFS_EOF_FLAGS_VALID	\
373 	(XFS_EOF_FLAGS_SYNC |	\
374 	 XFS_EOF_FLAGS_UID |	\
375 	 XFS_EOF_FLAGS_GID |	\
376 	 XFS_EOF_FLAGS_PRID |	\
377 	 XFS_EOF_FLAGS_MINFILESIZE)
378 
379 
380 /*
381  * The user-level Handle Request interface structure.
382  */
383 typedef struct xfs_fsop_handlereq {
384 	__u32		fd;		/* fd for FD_TO_HANDLE		*/
385 	void		__user *path;	/* user pathname		*/
386 	__u32		oflags;		/* open flags			*/
387 	void		__user *ihandle;/* user supplied handle		*/
388 	__u32		ihandlen;	/* user supplied length		*/
389 	void		__user *ohandle;/* user buffer for handle	*/
390 	__u32		__user *ohandlen;/* user buffer length		*/
391 } xfs_fsop_handlereq_t;
392 
393 /*
394  * Compound structures for passing args through Handle Request interfaces
395  * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
396  * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
397  *	     XFS_IOC_ATTRMULTI_BY_HANDLE
398  */
399 
400 typedef struct xfs_fsop_setdm_handlereq {
401 	struct xfs_fsop_handlereq	hreq;	/* handle information	*/
402 	struct fsdmidata		__user *data;	/* DMAPI data	*/
403 } xfs_fsop_setdm_handlereq_t;
404 
405 typedef struct xfs_attrlist_cursor {
406 	__u32		opaque[4];
407 } xfs_attrlist_cursor_t;
408 
409 typedef struct xfs_fsop_attrlist_handlereq {
410 	struct xfs_fsop_handlereq	hreq; /* handle interface structure */
411 	struct xfs_attrlist_cursor	pos; /* opaque cookie, list offset */
412 	__u32				flags;	/* which namespace to use */
413 	__u32				buflen;	/* length of buffer supplied */
414 	void				__user *buffer;	/* returned names */
415 } xfs_fsop_attrlist_handlereq_t;
416 
417 typedef struct xfs_attr_multiop {
418 	__u32		am_opcode;
419 #define ATTR_OP_GET	1	/* return the indicated attr's value */
420 #define ATTR_OP_SET	2	/* set/create the indicated attr/value pair */
421 #define ATTR_OP_REMOVE	3	/* remove the indicated attr */
422 	__s32		am_error;
423 	void		__user *am_attrname;
424 	void		__user *am_attrvalue;
425 	__u32		am_length;
426 	__u32		am_flags;
427 } xfs_attr_multiop_t;
428 
429 typedef struct xfs_fsop_attrmulti_handlereq {
430 	struct xfs_fsop_handlereq	hreq; /* handle interface structure */
431 	__u32				opcount;/* count of following multiop */
432 	struct xfs_attr_multiop		__user *ops; /* attr_multi data */
433 } xfs_fsop_attrmulti_handlereq_t;
434 
435 /*
436  * per machine unique filesystem identifier types.
437  */
438 typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
439 
440 typedef struct xfs_fid {
441 	__u16	fid_len;		/* length of remainder	*/
442 	__u16	fid_pad;
443 	__u32	fid_gen;		/* generation number	*/
444 	__u64	fid_ino;		/* 64 bits inode number */
445 } xfs_fid_t;
446 
447 typedef struct xfs_handle {
448 	union {
449 		__s64	    align;	/* force alignment of ha_fid	 */
450 		xfs_fsid_t  _ha_fsid;	/* unique file system identifier */
451 	} ha_u;
452 	xfs_fid_t	ha_fid;		/* file system specific file ID	 */
453 } xfs_handle_t;
454 #define ha_fsid ha_u._ha_fsid
455 
456 /*
457  * Structure passed to XFS_IOC_SWAPEXT
458  */
459 typedef struct xfs_swapext
460 {
461 	int64_t		sx_version;	/* version */
462 #define XFS_SX_VERSION		0
463 	int64_t		sx_fdtarget;	/* fd of target file */
464 	int64_t		sx_fdtmp;	/* fd of tmp file */
465 	xfs_off_t	sx_offset;	/* offset into file */
466 	xfs_off_t	sx_length;	/* leng from offset */
467 	char		sx_pad[16];	/* pad space, unused */
468 	xfs_bstat_t	sx_stat;	/* stat of target b4 copy */
469 } xfs_swapext_t;
470 
471 /*
472  * Flags for going down operation
473  */
474 #define XFS_FSOP_GOING_FLAGS_DEFAULT		0x0	/* going down */
475 #define XFS_FSOP_GOING_FLAGS_LOGFLUSH		0x1	/* flush log but not data */
476 #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH		0x2	/* don't flush log nor data */
477 
478 /* metadata scrubbing */
479 struct xfs_scrub_metadata {
480 	__u32 sm_type;		/* What to check? */
481 	__u32 sm_flags;		/* flags; see below. */
482 	__u64 sm_ino;		/* inode number. */
483 	__u32 sm_gen;		/* inode generation. */
484 	__u32 sm_agno;		/* ag number. */
485 	__u64 sm_reserved[5];	/* pad to 64 bytes */
486 };
487 
488 /*
489  * Metadata types and flags for scrub operation.
490  */
491 
492 /* Scrub subcommands. */
493 #define XFS_SCRUB_TYPE_PROBE	0	/* presence test ioctl */
494 #define XFS_SCRUB_TYPE_SB	1	/* superblock */
495 #define XFS_SCRUB_TYPE_AGF	2	/* AG free header */
496 #define XFS_SCRUB_TYPE_AGFL	3	/* AG free list */
497 #define XFS_SCRUB_TYPE_AGI	4	/* AG inode header */
498 #define XFS_SCRUB_TYPE_BNOBT	5	/* freesp by block btree */
499 #define XFS_SCRUB_TYPE_CNTBT	6	/* freesp by length btree */
500 #define XFS_SCRUB_TYPE_INOBT	7	/* inode btree */
501 #define XFS_SCRUB_TYPE_FINOBT	8	/* free inode btree */
502 #define XFS_SCRUB_TYPE_RMAPBT	9	/* reverse mapping btree */
503 #define XFS_SCRUB_TYPE_REFCNTBT	10	/* reference count btree */
504 #define XFS_SCRUB_TYPE_INODE	11	/* inode record */
505 #define XFS_SCRUB_TYPE_BMBTD	12	/* data fork block mapping */
506 #define XFS_SCRUB_TYPE_BMBTA	13	/* attr fork block mapping */
507 #define XFS_SCRUB_TYPE_BMBTC	14	/* CoW fork block mapping */
508 #define XFS_SCRUB_TYPE_DIR	15	/* directory */
509 #define XFS_SCRUB_TYPE_XATTR	16	/* extended attribute */
510 #define XFS_SCRUB_TYPE_SYMLINK	17	/* symbolic link */
511 #define XFS_SCRUB_TYPE_PARENT	18	/* parent pointers */
512 #define XFS_SCRUB_TYPE_RTBITMAP	19	/* realtime bitmap */
513 #define XFS_SCRUB_TYPE_RTSUM	20	/* realtime summary */
514 #define XFS_SCRUB_TYPE_UQUOTA	21	/* user quotas */
515 #define XFS_SCRUB_TYPE_GQUOTA	22	/* group quotas */
516 #define XFS_SCRUB_TYPE_PQUOTA	23	/* project quotas */
517 
518 /* Number of scrub subcommands. */
519 #define XFS_SCRUB_TYPE_NR	24
520 
521 /* i: Repair this metadata. */
522 #define XFS_SCRUB_IFLAG_REPAIR		(1 << 0)
523 
524 /* o: Metadata object needs repair. */
525 #define XFS_SCRUB_OFLAG_CORRUPT		(1 << 1)
526 
527 /*
528  * o: Metadata object could be optimized.  It's not corrupt, but
529  *    we could improve on it somehow.
530  */
531 #define XFS_SCRUB_OFLAG_PREEN		(1 << 2)
532 
533 /* o: Cross-referencing failed. */
534 #define XFS_SCRUB_OFLAG_XFAIL		(1 << 3)
535 
536 /* o: Metadata object disagrees with cross-referenced metadata. */
537 #define XFS_SCRUB_OFLAG_XCORRUPT	(1 << 4)
538 
539 /* o: Scan was not complete. */
540 #define XFS_SCRUB_OFLAG_INCOMPLETE	(1 << 5)
541 
542 /* o: Metadata object looked funny but isn't corrupt. */
543 #define XFS_SCRUB_OFLAG_WARNING		(1 << 6)
544 
545 #define XFS_SCRUB_FLAGS_IN	(XFS_SCRUB_IFLAG_REPAIR)
546 #define XFS_SCRUB_FLAGS_OUT	(XFS_SCRUB_OFLAG_CORRUPT | \
547 				 XFS_SCRUB_OFLAG_PREEN | \
548 				 XFS_SCRUB_OFLAG_XFAIL | \
549 				 XFS_SCRUB_OFLAG_XCORRUPT | \
550 				 XFS_SCRUB_OFLAG_INCOMPLETE | \
551 				 XFS_SCRUB_OFLAG_WARNING)
552 #define XFS_SCRUB_FLAGS_ALL	(XFS_SCRUB_FLAGS_IN | XFS_SCRUB_FLAGS_OUT)
553 
554 /*
555  * ioctl limits
556  */
557 #ifdef XATTR_LIST_MAX
558 #  define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
559 #else
560 #  define XFS_XATTR_LIST_MAX 65536
561 #endif
562 
563 
564 /*
565  * ioctl commands that are used by Linux filesystems
566  */
567 #define XFS_IOC_GETXFLAGS	FS_IOC_GETFLAGS
568 #define XFS_IOC_SETXFLAGS	FS_IOC_SETFLAGS
569 #define XFS_IOC_GETVERSION	FS_IOC_GETVERSION
570 
571 /*
572  * ioctl commands that replace IRIX fcntl()'s
573  * For 'documentation' purposed more than anything else,
574  * the "cmd #" field reflects the IRIX fcntl number.
575  */
576 #define XFS_IOC_ALLOCSP		_IOW ('X', 10, struct xfs_flock64)
577 #define XFS_IOC_FREESP		_IOW ('X', 11, struct xfs_flock64)
578 #define XFS_IOC_DIOINFO		_IOR ('X', 30, struct dioattr)
579 #define XFS_IOC_FSGETXATTR	FS_IOC_FSGETXATTR
580 #define XFS_IOC_FSSETXATTR	FS_IOC_FSSETXATTR
581 #define XFS_IOC_ALLOCSP64	_IOW ('X', 36, struct xfs_flock64)
582 #define XFS_IOC_FREESP64	_IOW ('X', 37, struct xfs_flock64)
583 #define XFS_IOC_GETBMAP		_IOWR('X', 38, struct getbmap)
584 #define XFS_IOC_FSSETDM		_IOW ('X', 39, struct fsdmidata)
585 #define XFS_IOC_RESVSP		_IOW ('X', 40, struct xfs_flock64)
586 #define XFS_IOC_UNRESVSP	_IOW ('X', 41, struct xfs_flock64)
587 #define XFS_IOC_RESVSP64	_IOW ('X', 42, struct xfs_flock64)
588 #define XFS_IOC_UNRESVSP64	_IOW ('X', 43, struct xfs_flock64)
589 #define XFS_IOC_GETBMAPA	_IOWR('X', 44, struct getbmap)
590 #define XFS_IOC_FSGETXATTRA	_IOR ('X', 45, struct fsxattr)
591 /*	XFS_IOC_SETBIOSIZE ---- deprecated 46	   */
592 /*	XFS_IOC_GETBIOSIZE ---- deprecated 47	   */
593 #define XFS_IOC_GETBMAPX	_IOWR('X', 56, struct getbmap)
594 #define XFS_IOC_ZERO_RANGE	_IOW ('X', 57, struct xfs_flock64)
595 #define XFS_IOC_FREE_EOFBLOCKS	_IOR ('X', 58, struct xfs_fs_eofblocks)
596 /*	XFS_IOC_GETFSMAP ------ hoisted 59         */
597 #define XFS_IOC_SCRUB_METADATA	_IOWR('X', 60, struct xfs_scrub_metadata)
598 
599 /*
600  * ioctl commands that replace IRIX syssgi()'s
601  */
602 #define XFS_IOC_FSGEOMETRY_V1	     _IOR ('X', 100, struct xfs_fsop_geom_v1)
603 #define XFS_IOC_FSBULKSTAT	     _IOWR('X', 101, struct xfs_fsop_bulkreq)
604 #define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
605 #define XFS_IOC_FSINUMBERS	     _IOWR('X', 103, struct xfs_fsop_bulkreq)
606 #define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
607 #define XFS_IOC_PATH_TO_HANDLE	     _IOWR('X', 105, struct xfs_fsop_handlereq)
608 #define XFS_IOC_FD_TO_HANDLE	     _IOWR('X', 106, struct xfs_fsop_handlereq)
609 #define XFS_IOC_OPEN_BY_HANDLE	     _IOWR('X', 107, struct xfs_fsop_handlereq)
610 #define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
611 #define XFS_IOC_SWAPEXT		     _IOWR('X', 109, struct xfs_swapext)
612 #define XFS_IOC_FSGROWFSDATA	     _IOW ('X', 110, struct xfs_growfs_data)
613 #define XFS_IOC_FSGROWFSLOG	     _IOW ('X', 111, struct xfs_growfs_log)
614 #define XFS_IOC_FSGROWFSRT	     _IOW ('X', 112, struct xfs_growfs_rt)
615 #define XFS_IOC_FSCOUNTS	     _IOR ('X', 113, struct xfs_fsop_counts)
616 #define XFS_IOC_SET_RESBLKS	     _IOWR('X', 114, struct xfs_fsop_resblks)
617 #define XFS_IOC_GET_RESBLKS	     _IOR ('X', 115, struct xfs_fsop_resblks)
618 #define XFS_IOC_ERROR_INJECTION	     _IOW ('X', 116, struct xfs_error_injection)
619 #define XFS_IOC_ERROR_CLEARALL	     _IOW ('X', 117, struct xfs_error_injection)
620 /*	XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118	 */
621 
622 #define XFS_IOC_FREEZE		     _IOWR('X', 119, int)	/* aka FIFREEZE */
623 #define XFS_IOC_THAW		     _IOWR('X', 120, int)	/* aka FITHAW */
624 
625 #define XFS_IOC_FSSETDM_BY_HANDLE    _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
626 #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
627 #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
628 #define XFS_IOC_FSGEOMETRY	     _IOR ('X', 124, struct xfs_fsop_geom)
629 #define XFS_IOC_GOINGDOWN	     _IOR ('X', 125, uint32_t)
630 /*	XFS_IOC_GETFSUUID ---------- deprecated 140	 */
631 
632 
633 #ifndef HAVE_BBMACROS
634 /*
635  * Block I/O parameterization.	A basic block (BB) is the lowest size of
636  * filesystem allocation, and must equal 512.  Length units given to bio
637  * routines are in BB's.
638  */
639 #define BBSHIFT		9
640 #define BBSIZE		(1<<BBSHIFT)
641 #define BBMASK		(BBSIZE-1)
642 #define BTOBB(bytes)	(((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
643 #define BTOBBT(bytes)	((__u64)(bytes) >> BBSHIFT)
644 #define BBTOB(bbs)	((bbs) << BBSHIFT)
645 #endif
646 
647 #endif	/* __XFS_FS_H__ */
648