1  /* SPDX-License-Identifier: LGPL-2.1 */
2  /*
3   * Copyright (c) 1995-2005 Silicon Graphics, Inc.
4   * All Rights Reserved.
5   */
6  #ifndef __XFS_FS_H__
7  #define __XFS_FS_H__
8  
9  /*
10   * SGI's XFS filesystem's major stuff (constants, structures)
11   * NOTE: This file must be compile-able with C++ compilers.
12   */
13  
14  /*
15   * Direct I/O attribute record used with XFS_IOC_DIOINFO
16   * d_miniosz is the min xfer size, xfer size multiple and file seek offset
17   * alignment.
18   */
19  #ifndef HAVE_DIOATTR
20  struct dioattr {
21  	__u32		d_mem;		/* data buffer memory alignment */
22  	__u32		d_miniosz;	/* min xfer size		*/
23  	__u32		d_maxiosz;	/* max xfer size		*/
24  };
25  #endif
26  
27  /*
28   * Structure for XFS_IOC_GETBMAP.
29   * On input, fill in bmv_offset and bmv_length of the first structure
30   * to indicate the area of interest in the file, and bmv_entries with
31   * the number of array elements given back.  The first structure is
32   * updated on return to give the offset and length for the next call.
33   */
34  #ifndef HAVE_GETBMAP
35  struct getbmap {
36  	__s64		bmv_offset;	/* file offset of segment in blocks */
37  	__s64		bmv_block;	/* starting block (64-bit daddr_t)  */
38  	__s64		bmv_length;	/* length of segment, blocks	    */
39  	__s32		bmv_count;	/* # of entries in array incl. 1st  */
40  	__s32		bmv_entries;	/* # of entries filled in (output)  */
41  };
42  #endif
43  
44  /*
45   *	Structure for XFS_IOC_GETBMAPX.	 Fields bmv_offset through bmv_entries
46   *	are used exactly as in the getbmap structure.  The getbmapx structure
47   *	has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
48   *	is only used for the first structure.  It contains input flags
49   *	specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled
50   *	in by the XFS_IOC_GETBMAPX command for each returned structure after
51   *	the first.
52   */
53  #ifndef HAVE_GETBMAPX
54  struct getbmapx {
55  	__s64		bmv_offset;	/* file offset of segment in blocks */
56  	__s64		bmv_block;	/* starting block (64-bit daddr_t)  */
57  	__s64		bmv_length;	/* length of segment, blocks	    */
58  	__s32		bmv_count;	/* # of entries in array incl. 1st  */
59  	__s32		bmv_entries;	/* # of entries filled in (output). */
60  	__s32		bmv_iflags;	/* input flags (1st structure)	    */
61  	__s32		bmv_oflags;	/* output flags (after 1st structure)*/
62  	__s32		bmv_unused1;	/* future use			    */
63  	__s32		bmv_unused2;	/* future use			    */
64  };
65  #endif
66  
67  /*	bmv_iflags values - set by XFS_IOC_GETBMAPX caller.	*/
68  #define BMV_IF_ATTRFORK		0x1	/* return attr fork rather than data */
69  #define BMV_IF_NO_DMAPI_READ	0x2	/* Deprecated */
70  #define BMV_IF_PREALLOC		0x4	/* rtn status BMV_OF_PREALLOC if req */
71  #define BMV_IF_DELALLOC		0x8	/* rtn status BMV_OF_DELALLOC if req */
72  #define BMV_IF_NO_HOLES		0x10	/* Do not return holes */
73  #define BMV_IF_COWFORK		0x20	/* return CoW fork rather than data */
74  #define BMV_IF_VALID	\
75  	(BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|	\
76  	 BMV_IF_DELALLOC|BMV_IF_NO_HOLES|BMV_IF_COWFORK)
77  
78  /*	bmv_oflags values - returned for each non-header segment */
79  #define BMV_OF_PREALLOC		0x1	/* segment = unwritten pre-allocation */
80  #define BMV_OF_DELALLOC		0x2	/* segment = delayed allocation */
81  #define BMV_OF_LAST		0x4	/* segment is the last in the file */
82  #define BMV_OF_SHARED		0x8	/* segment shared with another file */
83  
84  /*	fmr_owner special values for FS_IOC_GETFSMAP */
85  #define XFS_FMR_OWN_FREE	FMR_OWN_FREE      /* free space */
86  #define XFS_FMR_OWN_UNKNOWN	FMR_OWN_UNKNOWN   /* unknown owner */
87  #define XFS_FMR_OWN_FS		FMR_OWNER('X', 1) /* static fs metadata */
88  #define XFS_FMR_OWN_LOG		FMR_OWNER('X', 2) /* journalling log */
89  #define XFS_FMR_OWN_AG		FMR_OWNER('X', 3) /* per-AG metadata */
90  #define XFS_FMR_OWN_INOBT	FMR_OWNER('X', 4) /* inode btree blocks */
91  #define XFS_FMR_OWN_INODES	FMR_OWNER('X', 5) /* inodes */
92  #define XFS_FMR_OWN_REFC	FMR_OWNER('X', 6) /* refcount tree */
93  #define XFS_FMR_OWN_COW		FMR_OWNER('X', 7) /* cow staging */
94  #define XFS_FMR_OWN_DEFECTIVE	FMR_OWNER('X', 8) /* bad blocks */
95  
96  /*
97   * File segment locking set data type for 64 bit access.
98   * Also used for all the RESV/FREE interfaces.
99   */
100  typedef struct xfs_flock64 {
101  	__s16		l_type;
102  	__s16		l_whence;
103  	__s64		l_start;
104  	__s64		l_len;		/* len == 0 means until end of file */
105  	__s32		l_sysid;
106  	__u32		l_pid;
107  	__s32		l_pad[4];	/* reserve area			    */
108  } xfs_flock64_t;
109  
110  /*
111   * Output for XFS_IOC_FSGEOMETRY_V1
112   */
113  struct xfs_fsop_geom_v1 {
114  	__u32		blocksize;	/* filesystem (data) block size */
115  	__u32		rtextsize;	/* realtime extent size		*/
116  	__u32		agblocks;	/* fsblocks in an AG		*/
117  	__u32		agcount;	/* number of allocation groups	*/
118  	__u32		logblocks;	/* fsblocks in the log		*/
119  	__u32		sectsize;	/* (data) sector size, bytes	*/
120  	__u32		inodesize;	/* inode size in bytes		*/
121  	__u32		imaxpct;	/* max allowed inode space(%)	*/
122  	__u64		datablocks;	/* fsblocks in data subvolume	*/
123  	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
124  	__u64		rtextents;	/* rt extents in realtime subvol*/
125  	__u64		logstart;	/* starting fsblock of the log	*/
126  	unsigned char	uuid[16];	/* unique id of the filesystem	*/
127  	__u32		sunit;		/* stripe unit, fsblocks	*/
128  	__u32		swidth;		/* stripe width, fsblocks	*/
129  	__s32		version;	/* structure version		*/
130  	__u32		flags;		/* superblock version flags	*/
131  	__u32		logsectsize;	/* log sector size, bytes	*/
132  	__u32		rtsectsize;	/* realtime sector size, bytes	*/
133  	__u32		dirblocksize;	/* directory block size, bytes	*/
134  };
135  
136  /*
137   * Output for XFS_IOC_FSGEOMETRY_V4
138   */
139  struct xfs_fsop_geom_v4 {
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  	__u32		logsunit;	/* log stripe unit, bytes	*/
161  };
162  
163  /*
164   * Output for XFS_IOC_FSGEOMETRY
165   */
166  struct xfs_fsop_geom {
167  	__u32		blocksize;	/* filesystem (data) block size */
168  	__u32		rtextsize;	/* realtime extent size		*/
169  	__u32		agblocks;	/* fsblocks in an AG		*/
170  	__u32		agcount;	/* number of allocation groups	*/
171  	__u32		logblocks;	/* fsblocks in the log		*/
172  	__u32		sectsize;	/* (data) sector size, bytes	*/
173  	__u32		inodesize;	/* inode size in bytes		*/
174  	__u32		imaxpct;	/* max allowed inode space(%)	*/
175  	__u64		datablocks;	/* fsblocks in data subvolume	*/
176  	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
177  	__u64		rtextents;	/* rt extents in realtime subvol*/
178  	__u64		logstart;	/* starting fsblock of the log	*/
179  	unsigned char	uuid[16];	/* unique id of the filesystem	*/
180  	__u32		sunit;		/* stripe unit, fsblocks	*/
181  	__u32		swidth;		/* stripe width, fsblocks	*/
182  	__s32		version;	/* structure version		*/
183  	__u32		flags;		/* superblock version flags	*/
184  	__u32		logsectsize;	/* log sector size, bytes	*/
185  	__u32		rtsectsize;	/* realtime sector size, bytes	*/
186  	__u32		dirblocksize;	/* directory block size, bytes	*/
187  	__u32		logsunit;	/* log stripe unit, bytes	*/
188  	uint32_t	sick;		/* o: unhealthy fs & rt metadata */
189  	uint32_t	checked;	/* o: checked fs & rt metadata	*/
190  	__u64		reserved[17];	/* reserved space		*/
191  };
192  
193  #define XFS_FSOP_GEOM_SICK_COUNTERS	(1 << 0)  /* summary counters */
194  #define XFS_FSOP_GEOM_SICK_UQUOTA	(1 << 1)  /* user quota */
195  #define XFS_FSOP_GEOM_SICK_GQUOTA	(1 << 2)  /* group quota */
196  #define XFS_FSOP_GEOM_SICK_PQUOTA	(1 << 3)  /* project quota */
197  #define XFS_FSOP_GEOM_SICK_RT_BITMAP	(1 << 4)  /* realtime bitmap */
198  #define XFS_FSOP_GEOM_SICK_RT_SUMMARY	(1 << 5)  /* realtime summary */
199  #define XFS_FSOP_GEOM_SICK_QUOTACHECK	(1 << 6)  /* quota counts */
200  #define XFS_FSOP_GEOM_SICK_NLINKS	(1 << 7)  /* inode link counts */
201  
202  /* Output for XFS_FS_COUNTS */
203  typedef struct xfs_fsop_counts {
204  	__u64	freedata;	/* free data section blocks */
205  	__u64	freertx;	/* free rt extents */
206  	__u64	freeino;	/* free inodes */
207  	__u64	allocino;	/* total allocated inodes */
208  } xfs_fsop_counts_t;
209  
210  /* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
211  typedef struct xfs_fsop_resblks {
212  	__u64  resblks;
213  	__u64  resblks_avail;
214  } xfs_fsop_resblks_t;
215  
216  #define XFS_FSOP_GEOM_VERSION		0
217  #define XFS_FSOP_GEOM_VERSION_V5	5
218  
219  #define XFS_FSOP_GEOM_FLAGS_ATTR	(1 << 0)  /* attributes in use	   */
220  #define XFS_FSOP_GEOM_FLAGS_NLINK	(1 << 1)  /* 32-bit nlink values   */
221  #define XFS_FSOP_GEOM_FLAGS_QUOTA	(1 << 2)  /* quotas enabled	   */
222  #define XFS_FSOP_GEOM_FLAGS_IALIGN	(1 << 3)  /* inode alignment	   */
223  #define XFS_FSOP_GEOM_FLAGS_DALIGN	(1 << 4)  /* large data alignment  */
224  #define XFS_FSOP_GEOM_FLAGS_SHARED	(1 << 5)  /* read-only shared	   */
225  #define XFS_FSOP_GEOM_FLAGS_EXTFLG	(1 << 6)  /* special extent flag   */
226  #define XFS_FSOP_GEOM_FLAGS_DIRV2	(1 << 7)  /* directory version 2   */
227  #define XFS_FSOP_GEOM_FLAGS_LOGV2	(1 << 8)  /* log format version 2  */
228  #define XFS_FSOP_GEOM_FLAGS_SECTOR	(1 << 9)  /* sector sizes >1BB	   */
229  #define XFS_FSOP_GEOM_FLAGS_ATTR2	(1 << 10) /* inline attributes rework */
230  #define XFS_FSOP_GEOM_FLAGS_PROJID32	(1 << 11) /* 32-bit project IDs	   */
231  #define XFS_FSOP_GEOM_FLAGS_DIRV2CI	(1 << 12) /* ASCII only CI names   */
232  	/*  -- Do not use --		(1 << 13)    SGI parent pointers   */
233  #define XFS_FSOP_GEOM_FLAGS_LAZYSB	(1 << 14) /* lazy superblock counters */
234  #define XFS_FSOP_GEOM_FLAGS_V5SB	(1 << 15) /* version 5 superblock  */
235  #define XFS_FSOP_GEOM_FLAGS_FTYPE	(1 << 16) /* inode directory types */
236  #define XFS_FSOP_GEOM_FLAGS_FINOBT	(1 << 17) /* free inode btree	   */
237  #define XFS_FSOP_GEOM_FLAGS_SPINODES	(1 << 18) /* sparse inode chunks   */
238  #define XFS_FSOP_GEOM_FLAGS_RMAPBT	(1 << 19) /* reverse mapping btree */
239  #define XFS_FSOP_GEOM_FLAGS_REFLINK	(1 << 20) /* files can share blocks */
240  #define XFS_FSOP_GEOM_FLAGS_BIGTIME	(1 << 21) /* 64-bit nsec timestamps */
241  #define XFS_FSOP_GEOM_FLAGS_INOBTCNT	(1 << 22) /* inobt btree counter */
242  #define XFS_FSOP_GEOM_FLAGS_NREXT64	(1 << 23) /* large extent counters */
243  #define XFS_FSOP_GEOM_FLAGS_EXCHANGE_RANGE (1 << 24) /* exchange range */
244  #define XFS_FSOP_GEOM_FLAGS_PARENT	(1 << 25) /* linux parent pointers */
245  
246  /*
247   * Minimum and maximum sizes need for growth checks.
248   *
249   * Block counts are in units of filesystem blocks, not basic blocks.
250   */
251  #define XFS_MIN_AG_BLOCKS	64
252  #define XFS_MIN_LOG_BLOCKS	512ULL
253  #define XFS_MAX_LOG_BLOCKS	(1024 * 1024ULL)
254  #define XFS_MIN_LOG_BYTES	(10 * 1024 * 1024ULL)
255  
256  /*
257   * Limits on sb_agblocks/sb_agblklog -- mkfs won't format AGs smaller than
258   * 16MB or larger than 1TB.
259   */
260  #define XFS_MIN_AG_BYTES	(1ULL << 24)	/* 16 MB */
261  #define XFS_MAX_AG_BYTES	(1ULL << 40)	/* 1 TB */
262  #define XFS_MAX_AG_BLOCKS	(XFS_MAX_AG_BYTES / XFS_MIN_BLOCKSIZE)
263  #define XFS_MAX_CRC_AG_BLOCKS	(XFS_MAX_AG_BYTES / XFS_MIN_CRC_BLOCKSIZE)
264  
265  #define XFS_MAX_AGNUMBER	((xfs_agnumber_t)(NULLAGNUMBER - 1))
266  
267  /* keep the maximum size under 2^31 by a small amount */
268  #define XFS_MAX_LOG_BYTES \
269  	((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
270  
271  /* Used for sanity checks on superblock */
272  #define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * (s)->sb_agblocks)
273  #define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *	\
274  			 (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
275  
276  /*
277   * Output for XFS_IOC_AG_GEOMETRY
278   */
279  struct xfs_ag_geometry {
280  	uint32_t	ag_number;	/* i/o: AG number */
281  	uint32_t	ag_length;	/* o: length in blocks */
282  	uint32_t	ag_freeblks;	/* o: free space */
283  	uint32_t	ag_icount;	/* o: inodes allocated */
284  	uint32_t	ag_ifree;	/* o: inodes free */
285  	uint32_t	ag_sick;	/* o: sick things in ag */
286  	uint32_t	ag_checked;	/* o: checked metadata in ag */
287  	uint32_t	ag_flags;	/* i/o: flags for this ag */
288  	uint64_t	ag_reserved[12];/* o: zero */
289  };
290  #define XFS_AG_GEOM_SICK_SB	(1 << 0)  /* superblock */
291  #define XFS_AG_GEOM_SICK_AGF	(1 << 1)  /* AGF header */
292  #define XFS_AG_GEOM_SICK_AGFL	(1 << 2)  /* AGFL header */
293  #define XFS_AG_GEOM_SICK_AGI	(1 << 3)  /* AGI header */
294  #define XFS_AG_GEOM_SICK_BNOBT	(1 << 4)  /* free space by block */
295  #define XFS_AG_GEOM_SICK_CNTBT	(1 << 5)  /* free space by length */
296  #define XFS_AG_GEOM_SICK_INOBT	(1 << 6)  /* inode index */
297  #define XFS_AG_GEOM_SICK_FINOBT	(1 << 7)  /* free inode index */
298  #define XFS_AG_GEOM_SICK_RMAPBT	(1 << 8)  /* reverse mappings */
299  #define XFS_AG_GEOM_SICK_REFCNTBT (1 << 9)  /* reference counts */
300  #define XFS_AG_GEOM_SICK_INODES	(1 << 10) /* bad inodes were seen */
301  
302  /*
303   * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
304   */
305  typedef struct xfs_growfs_data {
306  	__u64		newblocks;	/* new data subvol size, fsblocks */
307  	__u32		imaxpct;	/* new inode space percentage limit */
308  } xfs_growfs_data_t;
309  
310  typedef struct xfs_growfs_log {
311  	__u32		newblocks;	/* new log size, fsblocks */
312  	__u32		isint;		/* 1 if new log is internal */
313  } xfs_growfs_log_t;
314  
315  typedef struct xfs_growfs_rt {
316  	__u64		newblocks;	/* new realtime size, fsblocks */
317  	__u32		extsize;	/* new realtime extent size, fsblocks */
318  } xfs_growfs_rt_t;
319  
320  
321  /*
322   * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
323   */
324  typedef struct xfs_bstime {
325  	__kernel_long_t tv_sec;		/* seconds		*/
326  	__s32		tv_nsec;	/* and nanoseconds	*/
327  } xfs_bstime_t;
328  
329  struct xfs_bstat {
330  	__u64		bs_ino;		/* inode number			*/
331  	__u16		bs_mode;	/* type and mode		*/
332  	__u16		bs_nlink;	/* number of links		*/
333  	__u32		bs_uid;		/* user id			*/
334  	__u32		bs_gid;		/* group id			*/
335  	__u32		bs_rdev;	/* device value			*/
336  	__s32		bs_blksize;	/* block size			*/
337  	__s64		bs_size;	/* file size			*/
338  	xfs_bstime_t	bs_atime;	/* access time			*/
339  	xfs_bstime_t	bs_mtime;	/* modify time			*/
340  	xfs_bstime_t	bs_ctime;	/* inode change time		*/
341  	int64_t		bs_blocks;	/* number of blocks		*/
342  	__u32		bs_xflags;	/* extended flags		*/
343  	__s32		bs_extsize;	/* extent size			*/
344  	__s32		bs_extents;	/* number of extents		*/
345  	__u32		bs_gen;		/* generation count		*/
346  	__u16		bs_projid_lo;	/* lower part of project id	*/
347  #define	bs_projid	bs_projid_lo	/* (previously just bs_projid)	*/
348  	__u16		bs_forkoff;	/* inode fork offset in bytes	*/
349  	__u16		bs_projid_hi;	/* higher part of project id	*/
350  	uint16_t	bs_sick;	/* sick inode metadata		*/
351  	uint16_t	bs_checked;	/* checked inode metadata	*/
352  	unsigned char	bs_pad[2];	/* pad space, unused		*/
353  	__u32		bs_cowextsize;	/* cow extent size		*/
354  	__u32		bs_dmevmask;	/* DMIG event mask		*/
355  	__u16		bs_dmstate;	/* DMIG state info		*/
356  	__u16		bs_aextents;	/* attribute number of extents	*/
357  };
358  
359  /* New bulkstat structure that reports v5 features and fixes padding issues */
360  struct xfs_bulkstat {
361  	uint64_t	bs_ino;		/* inode number			*/
362  	uint64_t	bs_size;	/* file size			*/
363  
364  	uint64_t	bs_blocks;	/* number of blocks		*/
365  	uint64_t	bs_xflags;	/* extended flags		*/
366  
367  	int64_t		bs_atime;	/* access time, seconds		*/
368  	int64_t		bs_mtime;	/* modify time, seconds		*/
369  
370  	int64_t		bs_ctime;	/* inode change time, seconds	*/
371  	int64_t		bs_btime;	/* creation time, seconds	*/
372  
373  	uint32_t	bs_gen;		/* generation count		*/
374  	uint32_t	bs_uid;		/* user id			*/
375  	uint32_t	bs_gid;		/* group id			*/
376  	uint32_t	bs_projectid;	/* project id			*/
377  
378  	uint32_t	bs_atime_nsec;	/* access time, nanoseconds	*/
379  	uint32_t	bs_mtime_nsec;	/* modify time, nanoseconds	*/
380  	uint32_t	bs_ctime_nsec;	/* inode change time, nanoseconds */
381  	uint32_t	bs_btime_nsec;	/* creation time, nanoseconds	*/
382  
383  	uint32_t	bs_blksize;	/* block size			*/
384  	uint32_t	bs_rdev;	/* device value			*/
385  	uint32_t	bs_cowextsize_blks; /* cow extent size hint, blocks */
386  	uint32_t	bs_extsize_blks; /* extent size hint, blocks	*/
387  
388  	uint32_t	bs_nlink;	/* number of links		*/
389  	uint32_t	bs_extents;	/* 32-bit data fork extent counter */
390  	uint32_t	bs_aextents;	/* attribute number of extents	*/
391  	uint16_t	bs_version;	/* structure version		*/
392  	uint16_t	bs_forkoff;	/* inode fork offset in bytes	*/
393  
394  	uint16_t	bs_sick;	/* sick inode metadata		*/
395  	uint16_t	bs_checked;	/* checked inode metadata	*/
396  	uint16_t	bs_mode;	/* type and mode		*/
397  	uint16_t	bs_pad2;	/* zeroed			*/
398  	uint64_t	bs_extents64;	/* 64-bit data fork extent counter */
399  
400  	uint64_t	bs_pad[6];	/* zeroed			*/
401  };
402  
403  #define XFS_BULKSTAT_VERSION_V1	(1)
404  #define XFS_BULKSTAT_VERSION_V5	(5)
405  
406  /* bs_sick flags */
407  #define XFS_BS_SICK_INODE	(1 << 0)  /* inode core */
408  #define XFS_BS_SICK_BMBTD	(1 << 1)  /* data fork */
409  #define XFS_BS_SICK_BMBTA	(1 << 2)  /* attr fork */
410  #define XFS_BS_SICK_BMBTC	(1 << 3)  /* cow fork */
411  #define XFS_BS_SICK_DIR		(1 << 4)  /* directory */
412  #define XFS_BS_SICK_XATTR	(1 << 5)  /* extended attributes */
413  #define XFS_BS_SICK_SYMLINK	(1 << 6)  /* symbolic link remote target */
414  #define XFS_BS_SICK_PARENT	(1 << 7)  /* parent pointers */
415  #define XFS_BS_SICK_DIRTREE	(1 << 8)  /* directory tree structure */
416  
417  /*
418   * Project quota id helpers (previously projid was 16bit only
419   * and using two 16bit values to hold new 32bit projid was chosen
420   * to retain compatibility with "old" filesystems).
421   */
422  static inline uint32_t
bstat_get_projid(const struct xfs_bstat * bs)423  bstat_get_projid(const struct xfs_bstat *bs)
424  {
425  	return (uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
426  }
427  
428  /*
429   * The user-level BulkStat Request interface structure.
430   */
431  struct xfs_fsop_bulkreq {
432  	__u64		__user *lastip;	/* last inode # pointer		*/
433  	__s32		icount;		/* count of entries in buffer	*/
434  	void		__user *ubuffer;/* user buffer for inode desc.	*/
435  	__s32		__user *ocount;	/* output count pointer		*/
436  };
437  
438  /*
439   * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
440   */
441  struct xfs_inogrp {
442  	__u64		xi_startino;	/* starting inode number	*/
443  	__s32		xi_alloccount;	/* # bits set in allocmask	*/
444  	__u64		xi_allocmask;	/* mask of allocated inodes	*/
445  };
446  
447  /* New inumbers structure that reports v5 features and fixes padding issues */
448  struct xfs_inumbers {
449  	uint64_t	xi_startino;	/* starting inode number	*/
450  	uint64_t	xi_allocmask;	/* mask of allocated inodes	*/
451  	uint8_t		xi_alloccount;	/* # bits set in allocmask	*/
452  	uint8_t		xi_version;	/* version			*/
453  	uint8_t		xi_padding[6];	/* zero				*/
454  };
455  
456  #define XFS_INUMBERS_VERSION_V1	(1)
457  #define XFS_INUMBERS_VERSION_V5	(5)
458  
459  /* Header for bulk inode requests. */
460  struct xfs_bulk_ireq {
461  	uint64_t	ino;		/* I/O: start with this inode	*/
462  	uint32_t	flags;		/* I/O: operation flags		*/
463  	uint32_t	icount;		/* I: count of entries in buffer */
464  	uint32_t	ocount;		/* O: count of entries filled out */
465  	uint32_t	agno;		/* I: see comment for IREQ_AGNO	*/
466  	uint64_t	reserved[5];	/* must be zero			*/
467  };
468  
469  /*
470   * Only return results from the specified @agno.  If @ino is zero, start
471   * with the first inode of @agno.
472   */
473  #define XFS_BULK_IREQ_AGNO	(1U << 0)
474  
475  /*
476   * Return bulkstat information for a single inode, where @ino value is a
477   * special value, not a literal inode number.  See the XFS_BULK_IREQ_SPECIAL_*
478   * values below.  Not compatible with XFS_BULK_IREQ_AGNO.
479   */
480  #define XFS_BULK_IREQ_SPECIAL	(1U << 1)
481  
482  /*
483   * Return data fork extent count via xfs_bulkstat->bs_extents64 field and assign
484   * 0 to xfs_bulkstat->bs_extents when the flag is set.  Otherwise, use
485   * xfs_bulkstat->bs_extents for returning data fork extent count and set
486   * xfs_bulkstat->bs_extents64 to 0. In the second case, return -EOVERFLOW and
487   * assign 0 to xfs_bulkstat->bs_extents if data fork extent count is larger than
488   * XFS_MAX_EXTCNT_DATA_FORK_OLD.
489   */
490  #define XFS_BULK_IREQ_NREXT64	(1U << 2)
491  
492  #define XFS_BULK_IREQ_FLAGS_ALL	(XFS_BULK_IREQ_AGNO |	 \
493  				 XFS_BULK_IREQ_SPECIAL | \
494  				 XFS_BULK_IREQ_NREXT64)
495  
496  /* Operate on the root directory inode. */
497  #define XFS_BULK_IREQ_SPECIAL_ROOT	(1)
498  
499  /*
500   * ioctl structures for v5 bulkstat and inumbers requests
501   */
502  struct xfs_bulkstat_req {
503  	struct xfs_bulk_ireq	hdr;
504  	struct xfs_bulkstat	bulkstat[];
505  };
506  #define XFS_BULKSTAT_REQ_SIZE(nr)	(sizeof(struct xfs_bulkstat_req) + \
507  					 (nr) * sizeof(struct xfs_bulkstat))
508  
509  struct xfs_inumbers_req {
510  	struct xfs_bulk_ireq	hdr;
511  	struct xfs_inumbers	inumbers[];
512  };
513  #define XFS_INUMBERS_REQ_SIZE(nr)	(sizeof(struct xfs_inumbers_req) + \
514  					 (nr) * sizeof(struct xfs_inumbers))
515  
516  /*
517   * Error injection.
518   */
519  typedef struct xfs_error_injection {
520  	__s32		fd;
521  	__s32		errtag;
522  } xfs_error_injection_t;
523  
524  
525  /*
526   * Speculative preallocation trimming.
527   */
528  #define XFS_EOFBLOCKS_VERSION		1
529  struct xfs_fs_eofblocks {
530  	__u32		eof_version;
531  	__u32		eof_flags;
532  	uid_t		eof_uid;
533  	gid_t		eof_gid;
534  	prid_t		eof_prid;
535  	__u32		pad32;
536  	__u64		eof_min_file_size;
537  	__u64		pad64[12];
538  };
539  
540  /* eof_flags values */
541  #define XFS_EOF_FLAGS_SYNC		(1 << 0) /* sync/wait mode scan */
542  #define XFS_EOF_FLAGS_UID		(1 << 1) /* filter by uid */
543  #define XFS_EOF_FLAGS_GID		(1 << 2) /* filter by gid */
544  #define XFS_EOF_FLAGS_PRID		(1 << 3) /* filter by project id */
545  #define XFS_EOF_FLAGS_MINFILESIZE	(1 << 4) /* filter by min file size */
546  #define XFS_EOF_FLAGS_UNION		(1 << 5) /* union filter algorithm;
547  						  * kernel only, not included in
548  						  * valid mask */
549  #define XFS_EOF_FLAGS_VALID	\
550  	(XFS_EOF_FLAGS_SYNC |	\
551  	 XFS_EOF_FLAGS_UID |	\
552  	 XFS_EOF_FLAGS_GID |	\
553  	 XFS_EOF_FLAGS_PRID |	\
554  	 XFS_EOF_FLAGS_MINFILESIZE)
555  
556  
557  /*
558   * The user-level Handle Request interface structure.
559   */
560  typedef struct xfs_fsop_handlereq {
561  	__u32		fd;		/* fd for FD_TO_HANDLE		*/
562  	void		__user *path;	/* user pathname		*/
563  	__u32		oflags;		/* open flags			*/
564  	void		__user *ihandle;/* user supplied handle		*/
565  	__u32		ihandlen;	/* user supplied length		*/
566  	void		__user *ohandle;/* user buffer for handle	*/
567  	__u32		__user *ohandlen;/* user buffer length		*/
568  } xfs_fsop_handlereq_t;
569  
570  /*
571   * Compound structures for passing args through Handle Request interfaces
572   * xfs_attrlist_by_handle, xfs_attrmulti_by_handle
573   * - ioctls: XFS_IOC_ATTRLIST_BY_HANDLE, and XFS_IOC_ATTRMULTI_BY_HANDLE
574   */
575  
576  /*
577   * Flags passed in xfs_attr_multiop.am_flags for the attr ioctl interface.
578   *
579   * NOTE: Must match the values declared in libattr without the XFS_IOC_ prefix.
580   */
581  #define XFS_IOC_ATTR_ROOT	0x0002	/* use attrs in root namespace */
582  #define XFS_IOC_ATTR_SECURE	0x0008	/* use attrs in security namespace */
583  #define XFS_IOC_ATTR_CREATE	0x0010	/* fail if attr already exists */
584  #define XFS_IOC_ATTR_REPLACE	0x0020	/* fail if attr does not exist */
585  
586  typedef struct xfs_attrlist_cursor {
587  	__u32		opaque[4];
588  } xfs_attrlist_cursor_t;
589  
590  /*
591   * Define how lists of attribute names are returned to userspace from the
592   * XFS_IOC_ATTRLIST_BY_HANDLE ioctl.  struct xfs_attrlist is the header at the
593   * beginning of the returned buffer, and a each entry in al_offset contains the
594   * relative offset of an xfs_attrlist_ent containing the actual entry.
595   *
596   * NOTE: struct xfs_attrlist must match struct attrlist defined in libattr, and
597   * struct xfs_attrlist_ent must match struct attrlist_ent defined in libattr.
598   */
599  struct xfs_attrlist {
600  	__s32	al_count;	/* number of entries in attrlist */
601  	__s32	al_more;	/* T/F: more attrs (do call again) */
602  	__s32	al_offset[];	/* byte offsets of attrs [var-sized] */
603  };
604  
605  struct xfs_attrlist_ent {	/* data from attr_list() */
606  	__u32	a_valuelen;	/* number bytes in value of attr */
607  	char	a_name[];	/* attr name (NULL terminated) */
608  };
609  
610  typedef struct xfs_fsop_attrlist_handlereq {
611  	struct xfs_fsop_handlereq	hreq; /* handle interface structure */
612  	struct xfs_attrlist_cursor	pos; /* opaque cookie, list offset */
613  	__u32				flags;	/* which namespace to use */
614  	__u32				buflen;	/* length of buffer supplied */
615  	void				__user *buffer;	/* returned names */
616  } xfs_fsop_attrlist_handlereq_t;
617  
618  typedef struct xfs_attr_multiop {
619  	__u32		am_opcode;
620  #define ATTR_OP_GET	1	/* return the indicated attr's value */
621  #define ATTR_OP_SET	2	/* set/create the indicated attr/value pair */
622  #define ATTR_OP_REMOVE	3	/* remove the indicated attr */
623  	__s32		am_error;
624  	void		__user *am_attrname;
625  	void		__user *am_attrvalue;
626  	__u32		am_length;
627  	__u32		am_flags; /* XFS_IOC_ATTR_* */
628  } xfs_attr_multiop_t;
629  
630  typedef struct xfs_fsop_attrmulti_handlereq {
631  	struct xfs_fsop_handlereq	hreq; /* handle interface structure */
632  	__u32				opcount;/* count of following multiop */
633  	struct xfs_attr_multiop		__user *ops; /* attr_multi data */
634  } xfs_fsop_attrmulti_handlereq_t;
635  
636  /*
637   * per machine unique filesystem identifier types.
638   */
639  typedef struct xfs_fsid {
640  	__u32	val[2];			/* file system id type */
641  } xfs_fsid_t;
642  
643  typedef struct xfs_fid {
644  	__u16	fid_len;		/* length of remainder	*/
645  	__u16	fid_pad;
646  	__u32	fid_gen;		/* generation number	*/
647  	__u64	fid_ino;		/* 64 bits inode number */
648  } xfs_fid_t;
649  
650  typedef struct xfs_handle {
651  	union {
652  		__s64	    align;	/* force alignment of ha_fid	 */
653  		xfs_fsid_t  _ha_fsid;	/* unique file system identifier */
654  	} ha_u;
655  	xfs_fid_t	ha_fid;		/* file system specific file ID	 */
656  } xfs_handle_t;
657  #define ha_fsid ha_u._ha_fsid
658  
659  /*
660   * Structure passed to XFS_IOC_SWAPEXT
661   */
662  typedef struct xfs_swapext
663  {
664  	int64_t		sx_version;	/* version */
665  #define XFS_SX_VERSION		0
666  	int64_t		sx_fdtarget;	/* fd of target file */
667  	int64_t		sx_fdtmp;	/* fd of tmp file */
668  	xfs_off_t	sx_offset;	/* offset into file */
669  	xfs_off_t	sx_length;	/* leng from offset */
670  	char		sx_pad[16];	/* pad space, unused */
671  	struct xfs_bstat sx_stat;	/* stat of target b4 copy */
672  } xfs_swapext_t;
673  
674  /*
675   * Flags for going down operation
676   */
677  #define XFS_FSOP_GOING_FLAGS_DEFAULT		0x0	/* going down */
678  #define XFS_FSOP_GOING_FLAGS_LOGFLUSH		0x1	/* flush log but not data */
679  #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH		0x2	/* don't flush log nor data */
680  
681  /* metadata scrubbing */
682  struct xfs_scrub_metadata {
683  	__u32 sm_type;		/* What to check? */
684  	__u32 sm_flags;		/* flags; see below. */
685  	__u64 sm_ino;		/* inode number. */
686  	__u32 sm_gen;		/* inode generation. */
687  	__u32 sm_agno;		/* ag number. */
688  	__u64 sm_reserved[5];	/* pad to 64 bytes */
689  };
690  
691  /*
692   * Metadata types and flags for scrub operation.
693   */
694  
695  /* Scrub subcommands. */
696  #define XFS_SCRUB_TYPE_PROBE	0	/* presence test ioctl */
697  #define XFS_SCRUB_TYPE_SB	1	/* superblock */
698  #define XFS_SCRUB_TYPE_AGF	2	/* AG free header */
699  #define XFS_SCRUB_TYPE_AGFL	3	/* AG free list */
700  #define XFS_SCRUB_TYPE_AGI	4	/* AG inode header */
701  #define XFS_SCRUB_TYPE_BNOBT	5	/* freesp by block btree */
702  #define XFS_SCRUB_TYPE_CNTBT	6	/* freesp by length btree */
703  #define XFS_SCRUB_TYPE_INOBT	7	/* inode btree */
704  #define XFS_SCRUB_TYPE_FINOBT	8	/* free inode btree */
705  #define XFS_SCRUB_TYPE_RMAPBT	9	/* reverse mapping btree */
706  #define XFS_SCRUB_TYPE_REFCNTBT	10	/* reference count btree */
707  #define XFS_SCRUB_TYPE_INODE	11	/* inode record */
708  #define XFS_SCRUB_TYPE_BMBTD	12	/* data fork block mapping */
709  #define XFS_SCRUB_TYPE_BMBTA	13	/* attr fork block mapping */
710  #define XFS_SCRUB_TYPE_BMBTC	14	/* CoW fork block mapping */
711  #define XFS_SCRUB_TYPE_DIR	15	/* directory */
712  #define XFS_SCRUB_TYPE_XATTR	16	/* extended attribute */
713  #define XFS_SCRUB_TYPE_SYMLINK	17	/* symbolic link */
714  #define XFS_SCRUB_TYPE_PARENT	18	/* parent pointers */
715  #define XFS_SCRUB_TYPE_RTBITMAP	19	/* realtime bitmap */
716  #define XFS_SCRUB_TYPE_RTSUM	20	/* realtime summary */
717  #define XFS_SCRUB_TYPE_UQUOTA	21	/* user quotas */
718  #define XFS_SCRUB_TYPE_GQUOTA	22	/* group quotas */
719  #define XFS_SCRUB_TYPE_PQUOTA	23	/* project quotas */
720  #define XFS_SCRUB_TYPE_FSCOUNTERS 24	/* fs summary counters */
721  #define XFS_SCRUB_TYPE_QUOTACHECK 25	/* quota counters */
722  #define XFS_SCRUB_TYPE_NLINKS	26	/* inode link counts */
723  #define XFS_SCRUB_TYPE_HEALTHY	27	/* everything checked out ok */
724  #define XFS_SCRUB_TYPE_DIRTREE	28	/* directory tree structure */
725  
726  /* Number of scrub subcommands. */
727  #define XFS_SCRUB_TYPE_NR	29
728  
729  /*
730   * This special type code only applies to the vectored scrub implementation.
731   *
732   * If any of the previous scrub vectors recorded runtime errors or have
733   * sv_flags bits set that match the OFLAG bits in the barrier vector's
734   * sv_flags, set the barrier's sv_ret to -ECANCELED and return to userspace.
735   */
736  #define XFS_SCRUB_TYPE_BARRIER	(0xFFFFFFFF)
737  
738  /* i: Repair this metadata. */
739  #define XFS_SCRUB_IFLAG_REPAIR		(1u << 0)
740  
741  /* o: Metadata object needs repair. */
742  #define XFS_SCRUB_OFLAG_CORRUPT		(1u << 1)
743  
744  /*
745   * o: Metadata object could be optimized.  It's not corrupt, but
746   *    we could improve on it somehow.
747   */
748  #define XFS_SCRUB_OFLAG_PREEN		(1u << 2)
749  
750  /* o: Cross-referencing failed. */
751  #define XFS_SCRUB_OFLAG_XFAIL		(1u << 3)
752  
753  /* o: Metadata object disagrees with cross-referenced metadata. */
754  #define XFS_SCRUB_OFLAG_XCORRUPT	(1u << 4)
755  
756  /* o: Scan was not complete. */
757  #define XFS_SCRUB_OFLAG_INCOMPLETE	(1u << 5)
758  
759  /* o: Metadata object looked funny but isn't corrupt. */
760  #define XFS_SCRUB_OFLAG_WARNING		(1u << 6)
761  
762  /*
763   * o: IFLAG_REPAIR was set but metadata object did not need fixing or
764   *    optimization and has therefore not been altered.
765   */
766  #define XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED (1u << 7)
767  
768  /* i: Rebuild the data structure. */
769  #define XFS_SCRUB_IFLAG_FORCE_REBUILD	(1u << 8)
770  
771  #define XFS_SCRUB_FLAGS_IN	(XFS_SCRUB_IFLAG_REPAIR | \
772  				 XFS_SCRUB_IFLAG_FORCE_REBUILD)
773  #define XFS_SCRUB_FLAGS_OUT	(XFS_SCRUB_OFLAG_CORRUPT | \
774  				 XFS_SCRUB_OFLAG_PREEN | \
775  				 XFS_SCRUB_OFLAG_XFAIL | \
776  				 XFS_SCRUB_OFLAG_XCORRUPT | \
777  				 XFS_SCRUB_OFLAG_INCOMPLETE | \
778  				 XFS_SCRUB_OFLAG_WARNING | \
779  				 XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED)
780  #define XFS_SCRUB_FLAGS_ALL	(XFS_SCRUB_FLAGS_IN | XFS_SCRUB_FLAGS_OUT)
781  
782  /* Vectored scrub calls to reduce the number of kernel transitions. */
783  
784  struct xfs_scrub_vec {
785  	__u32 sv_type;		/* XFS_SCRUB_TYPE_* */
786  	__u32 sv_flags;		/* XFS_SCRUB_FLAGS_* */
787  	__s32 sv_ret;		/* 0 or a negative error code */
788  	__u32 sv_reserved;	/* must be zero */
789  };
790  
791  /* Vectored metadata scrub control structure. */
792  struct xfs_scrub_vec_head {
793  	__u64 svh_ino;		/* inode number. */
794  	__u32 svh_gen;		/* inode generation. */
795  	__u32 svh_agno;		/* ag number. */
796  	__u32 svh_flags;	/* XFS_SCRUB_VEC_FLAGS_* */
797  	__u16 svh_rest_us;	/* wait this much time between vector items */
798  	__u16 svh_nr;		/* number of svh_vectors */
799  	__u64 svh_reserved;	/* must be zero */
800  	__u64 svh_vectors;	/* pointer to buffer of xfs_scrub_vec */
801  };
802  
803  #define XFS_SCRUB_VEC_FLAGS_ALL		(0)
804  
805  /*
806   * ioctl limits
807   */
808  #ifdef XATTR_LIST_MAX
809  #  define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
810  #else
811  #  define XFS_XATTR_LIST_MAX 65536
812  #endif
813  
814  /*
815   * Exchange part of file1 with part of the file that this ioctl that is being
816   * called against (which we'll call file2).  Filesystems must be able to
817   * restart and complete the operation even after the system goes down.
818   */
819  struct xfs_exchange_range {
820  	__s32		file1_fd;
821  	__u32		pad;		/* must be zeroes */
822  	__u64		file1_offset;	/* file1 offset, bytes */
823  	__u64		file2_offset;	/* file2 offset, bytes */
824  	__u64		length;		/* bytes to exchange */
825  
826  	__u64		flags;		/* see XFS_EXCHANGE_RANGE_* below */
827  };
828  
829  /*
830   * Using the same definition of file2 as struct xfs_exchange_range, commit the
831   * contents of file1 into file2 if file2 has the same inode number, mtime, and
832   * ctime as the arguments provided to the call.  The old contents of file2 will
833   * be moved to file1.
834   *
835   * Returns -EBUSY if there isn't an exact match for the file2 fields.
836   *
837   * Filesystems must be able to restart and complete the operation even after
838   * the system goes down.
839   */
840  struct xfs_commit_range {
841  	__s32		file1_fd;
842  	__u32		pad;		/* must be zeroes */
843  	__u64		file1_offset;	/* file1 offset, bytes */
844  	__u64		file2_offset;	/* file2 offset, bytes */
845  	__u64		length;		/* bytes to exchange */
846  
847  	__u64		flags;		/* see XFS_EXCHANGE_RANGE_* below */
848  
849  	/* opaque file2 metadata for freshness checks */
850  	__u64		file2_freshness[6];
851  };
852  
853  /*
854   * Exchange file data all the way to the ends of both files, and then exchange
855   * the file sizes.  This flag can be used to replace a file's contents with a
856   * different amount of data.  length will be ignored.
857   */
858  #define XFS_EXCHANGE_RANGE_TO_EOF	(1ULL << 0)
859  
860  /* Flush all changes in file data and file metadata to disk before returning. */
861  #define XFS_EXCHANGE_RANGE_DSYNC	(1ULL << 1)
862  
863  /* Dry run; do all the parameter verification but do not change anything. */
864  #define XFS_EXCHANGE_RANGE_DRY_RUN	(1ULL << 2)
865  
866  /*
867   * Exchange only the parts of the two files where the file allocation units
868   * mapped to file1's range have been written to.  This can accelerate
869   * scatter-gather atomic writes with a temp file if all writes are aligned to
870   * the file allocation unit.
871   */
872  #define XFS_EXCHANGE_RANGE_FILE1_WRITTEN (1ULL << 3)
873  
874  #define XFS_EXCHANGE_RANGE_ALL_FLAGS	(XFS_EXCHANGE_RANGE_TO_EOF | \
875  					 XFS_EXCHANGE_RANGE_DSYNC | \
876  					 XFS_EXCHANGE_RANGE_DRY_RUN | \
877  					 XFS_EXCHANGE_RANGE_FILE1_WRITTEN)
878  
879  /* Iterating parent pointers of files. */
880  
881  /* target was the root directory */
882  #define XFS_GETPARENTS_OFLAG_ROOT	(1U << 0)
883  
884  /* Cursor is done iterating pptrs */
885  #define XFS_GETPARENTS_OFLAG_DONE	(1U << 1)
886  
887  #define XFS_GETPARENTS_OFLAGS_ALL	(XFS_GETPARENTS_OFLAG_ROOT | \
888  					 XFS_GETPARENTS_OFLAG_DONE)
889  
890  #define XFS_GETPARENTS_IFLAGS_ALL	(0)
891  
892  struct xfs_getparents_rec {
893  	struct xfs_handle	gpr_parent; /* Handle to parent */
894  	__u32			gpr_reclen; /* Length of entire record */
895  	__u32			gpr_reserved; /* zero */
896  	char			gpr_name[]; /* Null-terminated filename */
897  };
898  
899  /* Iterate through this file's directory parent pointers */
900  struct xfs_getparents {
901  	/*
902  	 * Structure to track progress in iterating the parent pointers.
903  	 * Must be initialized to zeroes before the first ioctl call, and
904  	 * not touched by callers after that.
905  	 */
906  	struct xfs_attrlist_cursor	gp_cursor;
907  
908  	/* Input flags: XFS_GETPARENTS_IFLAG* */
909  	__u16				gp_iflags;
910  
911  	/* Output flags: XFS_GETPARENTS_OFLAG* */
912  	__u16				gp_oflags;
913  
914  	/* Size of the gp_buffer in bytes */
915  	__u32				gp_bufsize;
916  
917  	/* Must be set to zero */
918  	__u64				gp_reserved;
919  
920  	/* Pointer to a buffer in which to place xfs_getparents_rec */
921  	__u64				gp_buffer;
922  };
923  
924  static inline struct xfs_getparents_rec *
xfs_getparents_first_rec(struct xfs_getparents * gp)925  xfs_getparents_first_rec(struct xfs_getparents *gp)
926  {
927  	return (struct xfs_getparents_rec *)(uintptr_t)gp->gp_buffer;
928  }
929  
930  static inline struct xfs_getparents_rec *
xfs_getparents_next_rec(struct xfs_getparents * gp,struct xfs_getparents_rec * gpr)931  xfs_getparents_next_rec(struct xfs_getparents *gp,
932  			struct xfs_getparents_rec *gpr)
933  {
934  	void *next = ((char *)gpr + gpr->gpr_reclen);
935  	void *end = (void *)(uintptr_t)(gp->gp_buffer + gp->gp_bufsize);
936  
937  	if (next >= end)
938  		return NULL;
939  
940  	return (struct xfs_getparents_rec *)next;
941  }
942  
943  /* Iterate through this file handle's directory parent pointers. */
944  struct xfs_getparents_by_handle {
945  	/* Handle to file whose parents we want. */
946  	struct xfs_handle		gph_handle;
947  
948  	struct xfs_getparents		gph_request;
949  };
950  
951  /*
952   * ioctl commands that are used by Linux filesystems
953   */
954  #define XFS_IOC_GETXFLAGS	FS_IOC_GETFLAGS
955  #define XFS_IOC_SETXFLAGS	FS_IOC_SETFLAGS
956  #define XFS_IOC_GETVERSION	FS_IOC_GETVERSION
957  
958  /*
959   * ioctl commands that replace IRIX fcntl()'s
960   * For 'documentation' purposed more than anything else,
961   * the "cmd #" field reflects the IRIX fcntl number.
962   */
963  /*	XFS_IOC_ALLOCSP ------- deprecated 10	 */
964  /*	XFS_IOC_FREESP -------- deprecated 11	 */
965  #define XFS_IOC_DIOINFO		_IOR ('X', 30, struct dioattr)
966  #define XFS_IOC_FSGETXATTR	FS_IOC_FSGETXATTR
967  #define XFS_IOC_FSSETXATTR	FS_IOC_FSSETXATTR
968  /*	XFS_IOC_ALLOCSP64 ----- deprecated 36	 */
969  /*	XFS_IOC_FREESP64 ------ deprecated 37	 */
970  #define XFS_IOC_GETBMAP		_IOWR('X', 38, struct getbmap)
971  /*      XFS_IOC_FSSETDM ------- deprecated 39    */
972  #define XFS_IOC_RESVSP		_IOW ('X', 40, struct xfs_flock64)
973  #define XFS_IOC_UNRESVSP	_IOW ('X', 41, struct xfs_flock64)
974  #define XFS_IOC_RESVSP64	_IOW ('X', 42, struct xfs_flock64)
975  #define XFS_IOC_UNRESVSP64	_IOW ('X', 43, struct xfs_flock64)
976  #define XFS_IOC_GETBMAPA	_IOWR('X', 44, struct getbmap)
977  #define XFS_IOC_FSGETXATTRA	_IOR ('X', 45, struct fsxattr)
978  /*	XFS_IOC_SETBIOSIZE ---- deprecated 46	   */
979  /*	XFS_IOC_GETBIOSIZE ---- deprecated 47	   */
980  #define XFS_IOC_GETBMAPX	_IOWR('X', 56, struct getbmap)
981  #define XFS_IOC_ZERO_RANGE	_IOW ('X', 57, struct xfs_flock64)
982  #define XFS_IOC_FREE_EOFBLOCKS	_IOR ('X', 58, struct xfs_fs_eofblocks)
983  /*	XFS_IOC_GETFSMAP ------ hoisted 59         */
984  #define XFS_IOC_SCRUB_METADATA	_IOWR('X', 60, struct xfs_scrub_metadata)
985  #define XFS_IOC_AG_GEOMETRY	_IOWR('X', 61, struct xfs_ag_geometry)
986  #define XFS_IOC_GETPARENTS	_IOWR('X', 62, struct xfs_getparents)
987  #define XFS_IOC_GETPARENTS_BY_HANDLE _IOWR('X', 63, struct xfs_getparents_by_handle)
988  #define XFS_IOC_SCRUBV_METADATA	_IOWR('X', 64, struct xfs_scrub_vec_head)
989  
990  /*
991   * ioctl commands that replace IRIX syssgi()'s
992   */
993  #define XFS_IOC_FSGEOMETRY_V1	     _IOR ('X', 100, struct xfs_fsop_geom_v1)
994  #define XFS_IOC_FSBULKSTAT	     _IOWR('X', 101, struct xfs_fsop_bulkreq)
995  #define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
996  #define XFS_IOC_FSINUMBERS	     _IOWR('X', 103, struct xfs_fsop_bulkreq)
997  #define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
998  #define XFS_IOC_PATH_TO_HANDLE	     _IOWR('X', 105, struct xfs_fsop_handlereq)
999  #define XFS_IOC_FD_TO_HANDLE	     _IOWR('X', 106, struct xfs_fsop_handlereq)
1000  #define XFS_IOC_OPEN_BY_HANDLE	     _IOWR('X', 107, struct xfs_fsop_handlereq)
1001  #define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
1002  #define XFS_IOC_SWAPEXT		     _IOWR('X', 109, struct xfs_swapext)
1003  #define XFS_IOC_FSGROWFSDATA	     _IOW ('X', 110, struct xfs_growfs_data)
1004  #define XFS_IOC_FSGROWFSLOG	     _IOW ('X', 111, struct xfs_growfs_log)
1005  #define XFS_IOC_FSGROWFSRT	     _IOW ('X', 112, struct xfs_growfs_rt)
1006  #define XFS_IOC_FSCOUNTS	     _IOR ('X', 113, struct xfs_fsop_counts)
1007  #define XFS_IOC_SET_RESBLKS	     _IOWR('X', 114, struct xfs_fsop_resblks)
1008  #define XFS_IOC_GET_RESBLKS	     _IOR ('X', 115, struct xfs_fsop_resblks)
1009  #define XFS_IOC_ERROR_INJECTION	     _IOW ('X', 116, struct xfs_error_injection)
1010  #define XFS_IOC_ERROR_CLEARALL	     _IOW ('X', 117, struct xfs_error_injection)
1011  /*	XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118	 */
1012  
1013  #define XFS_IOC_FREEZE		     _IOWR('X', 119, int)	/* aka FIFREEZE */
1014  #define XFS_IOC_THAW		     _IOWR('X', 120, int)	/* aka FITHAW */
1015  
1016  /*      XFS_IOC_FSSETDM_BY_HANDLE -- deprecated 121      */
1017  #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
1018  #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
1019  #define XFS_IOC_FSGEOMETRY_V4	     _IOR ('X', 124, struct xfs_fsop_geom_v4)
1020  #define XFS_IOC_GOINGDOWN	     _IOR ('X', 125, uint32_t)
1021  #define XFS_IOC_FSGEOMETRY	     _IOR ('X', 126, struct xfs_fsop_geom)
1022  #define XFS_IOC_BULKSTAT	     _IOR ('X', 127, struct xfs_bulkstat_req)
1023  #define XFS_IOC_INUMBERS	     _IOR ('X', 128, struct xfs_inumbers_req)
1024  #define XFS_IOC_EXCHANGE_RANGE	     _IOW ('X', 129, struct xfs_exchange_range)
1025  #define XFS_IOC_START_COMMIT	     _IOR ('X', 130, struct xfs_commit_range)
1026  #define XFS_IOC_COMMIT_RANGE	     _IOW ('X', 131, struct xfs_commit_range)
1027  /*	XFS_IOC_GETFSUUID ---------- deprecated 140	 */
1028  
1029  
1030  #ifndef HAVE_BBMACROS
1031  /*
1032   * Block I/O parameterization.	A basic block (BB) is the lowest size of
1033   * filesystem allocation, and must equal 512.  Length units given to bio
1034   * routines are in BB's.
1035   */
1036  #define BBSHIFT		9
1037  #define BBSIZE		(1<<BBSHIFT)
1038  #define BBMASK		(BBSIZE-1)
1039  #define BTOBB(bytes)	(((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
1040  #define BTOBBT(bytes)	((__u64)(bytes) >> BBSHIFT)
1041  #define BBTOB(bbs)	((bbs) << BBSHIFT)
1042  #endif
1043  
1044  #endif	/* __XFS_FS_H__ */
1045