/* * Taken from Linux kernel tree (linux/fs/xfs) * * Copyright (c) 1995-2005 Silicon Graphics, Inc. * All Rights Reserved. * * Copyright (c) 2012 Paulo Alcantara * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser 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. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef XFS_FS_H_ #define XFS_FS_H_ /* * SGI's XFS filesystem's major stuff (constants, structures) */ /* * Direct I/O attribute record used with XFS_IOC_DIOINFO * d_miniosz is the min xfer size, xfer size multiple and file seek offset * alignment. */ struct dioattr { uint32_t d_mem; /* data buffer memory alignment */ uint32_t d_miniosz; /* min xfer size */ uint32_t d_maxiosz; /* max xfer size */ }; /* * Structure for XFS_IOC_FSGETXATTR[A] and XFS_IOC_FSSETXATTR. */ struct fsxattr { uint32_t fsx_xflags; /* xflags field value (get/set) */ uint32_t fsx_extsize; /* extsize field value (get/set)*/ uint32_t fsx_nextents; /* nextents field value (get) */ uint32_t fsx_projid; /* project identifier (get/set) */ unsigned char fsx_pad[12]; }; /* * Flags for the bs_xflags/fsx_xflags field * There should be a one-to-one correspondence between these flags and the * XFS_DIFLAG_s. */ #define XFS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */ #define XFS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */ #define XFS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */ #define XFS_XFLAG_APPEND 0x00000010 /* all writes append */ #define XFS_XFLAG_SYNC 0x00000020 /* all writes synchronous */ #define XFS_XFLAG_NOATIME 0x00000040 /* do not update access time */ #define XFS_XFLAG_NODUMP 0x00000080 /* do not include in backups */ #define XFS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */ #define XFS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */ #define XFS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */ #define XFS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */ #define XFS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */ #define XFS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */ #define XFS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */ #define XFS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */ /* * Structure for XFS_IOC_GETBMAP. * On input, fill in bmv_offset and bmv_length of the first structure * to indicate the area of interest in the file, and bmv_entries with * the number of array elements given back. The first structure is * updated on return to give the offset and length for the next call. */ struct getbmap { int64_t bmv_offset; /* file offset of segment in blocks */ int64_t bmv_block; /* starting block (64-bit daddr_t) */ int64_t bmv_length; /* length of segment, blocks */ int32_t bmv_count; /* # of entries in array incl. 1st */ int32_t bmv_entries; /* # of entries filled in (output) */ }; /* * Structure for XFS_IOC_GETBMAPX. Fields bmv_offset through bmv_entries * are used exactly as in the getbmap structure. The getbmapx structure * has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field * is only used for the first structure. It contains input flags * specifying XFS_IOC_GETBMAPX actions. The bmv_oflags field is filled * in by the XFS_IOC_GETBMAPX command for each returned structure after * the first. */ struct getbmapx { int64_t bmv_offset; /* file offset of segment in blocks */ int64_t bmv_block; /* starting block (64-bit daddr_t) */ int64_t bmv_length; /* length of segment, blocks */ int32_t bmv_count; /* # of entries in array incl. 1st */ int32_t bmv_entries; /* # of entries filled in (output). */ int32_t bmv_iflags; /* input flags (1st structure) */ int32_t bmv_oflags; /* output flags (after 1st structure)*/ int32_t bmv_unused1; /* future use */ int32_t bmv_unused2; /* future use */ }; /* bmv_iflags values - set by XFS_IOC_GETBMAPX caller. */ #define BMV_IF_ATTRFORK 0x1 /* return attr fork rather than data */ #define BMV_IF_NO_DMAPI_READ 0x2 /* Do not generate DMAPI read event */ #define BMV_IF_PREALLOC 0x4 /* rtn status BMV_OF_PREALLOC if req */ #define BMV_IF_DELALLOC 0x8 /* rtn status BMV_OF_DELALLOC if req */ #define BMV_IF_NO_HOLES 0x10 /* Do not return holes */ #define BMV_IF_VALID \ (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC| \ BMV_IF_DELALLOC|BMV_IF_NO_HOLES) /* bmv_oflags values - returned for each non-header segment */ #define BMV_OF_PREALLOC 0x1 /* segment = unwritten pre-allocation */ #define BMV_OF_DELALLOC 0x2 /* segment = delayed allocation */ #define BMV_OF_LAST 0x4 /* segment is the last in the file */ /* * Structure for XFS_IOC_FSSETDM. * For use by backup and restore programs to set the XFS on-disk inode * fields di_dmevmask and di_dmstate. These must be set to exactly and * only values previously obtained via xfs_bulkstat! (Specifically the * xfs_bstat_t fields bs_dmevmask and bs_dmstate.) */ struct fsdmidata { uint32_t fsd_dmevmask; /* corresponds to di_dmevmask */ __u16 fsd_padding; __u16 fsd_dmstate; /* corresponds to di_dmstate */ }; /* * File segment locking set data type for 64 bit access. * Also used for all the RESV/FREE interfaces. */ typedef struct xfs_flock64 { __s16 l_type; __s16 l_whence; int64_t l_start; int64_t l_len; /* len == 0 means until end of file */ int32_t l_sysid; uint32_t l_pid; int32_t l_pad[4]; /* reserve area */ } xfs_flock64_t; /* * Output for XFS_IOC_FSGEOMETRY_V1 */ typedef struct xfs_fsop_geom_v1 { uint32_t blocksize; /* filesystem (data) block size */ uint32_t rtextsize; /* realtime extent size */ uint32_t agblocks; /* fsblocks in an AG */ uint32_t agcount; /* number of allocation groups */ uint32_t logblocks; /* fsblocks in the log */ uint32_t sectsize; /* (data) sector size, bytes */ uint32_t inodesize; /* inode size in bytes */ uint32_t imaxpct; /* max allowed inode space(%) */ uint64_t datablocks; /* fsblocks in data subvolume */ uint64_t rtblocks; /* fsblocks in realtime subvol */ uint64_t rtextents; /* rt extents in realtime subvol*/ uint64_t logstart; /* starting fsblock of the log */ unsigned char uuid[16]; /* unique id of the filesystem */ uint32_t sunit; /* stripe unit, fsblocks */ uint32_t swidth; /* stripe width, fsblocks */ int32_t version; /* structure version */ uint32_t flags; /* superblock version flags */ uint32_t logsectsize; /* log sector size, bytes */ uint32_t rtsectsize; /* realtime sector size, bytes */ uint32_t dirblocksize; /* directory block size, bytes */ } xfs_fsop_geom_v1_t; /* * Output for XFS_IOC_FSGEOMETRY */ typedef struct xfs_fsop_geom { uint32_t blocksize; /* filesystem (data) block size */ uint32_t rtextsize; /* realtime extent size */ uint32_t agblocks; /* fsblocks in an AG */ uint32_t agcount; /* number of allocation groups */ uint32_t logblocks; /* fsblocks in the log */ uint32_t sectsize; /* (data) sector size, bytes */ uint32_t inodesize; /* inode size in bytes */ uint32_t imaxpct; /* max allowed inode space(%) */ uint64_t datablocks; /* fsblocks in data subvolume */ uint64_t rtblocks; /* fsblocks in realtime subvol */ uint64_t rtextents; /* rt extents in realtime subvol*/ uint64_t logstart; /* starting fsblock of the log */ unsigned char uuid[16]; /* unique id of the filesystem */ uint32_t sunit; /* stripe unit, fsblocks */ uint32_t swidth; /* stripe width, fsblocks */ int32_t version; /* structure version */ uint32_t flags; /* superblock version flags */ uint32_t logsectsize; /* log sector size, bytes */ uint32_t rtsectsize; /* realtime sector size, bytes */ uint32_t dirblocksize; /* directory block size, bytes */ uint32_t logsunit; /* log stripe unit, bytes */ } xfs_fsop_geom_t; /* Output for XFS_FS_COUNTS */ typedef struct xfs_fsop_counts { uint64_t freedata; /* free data section blocks */ uint64_t freertx; /* free rt extents */ uint64_t freeino; /* free inodes */ uint64_t allocino; /* total allocated inodes */ } xfs_fsop_counts_t; /* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */ typedef struct xfs_fsop_resblks { uint64_t resblks; uint64_t resblks_avail; } xfs_fsop_resblks_t; #define XFS_FSOP_GEOM_VERSION 0 #define XFS_FSOP_GEOM_FLAGS_ATTR 0x0001 /* attributes in use */ #define XFS_FSOP_GEOM_FLAGS_NLINK 0x0002 /* 32-bit nlink values */ #define XFS_FSOP_GEOM_FLAGS_QUOTA 0x0004 /* quotas enabled */ #define XFS_FSOP_GEOM_FLAGS_IALIGN 0x0008 /* inode alignment */ #define XFS_FSOP_GEOM_FLAGS_DALIGN 0x0010 /* large data alignment */ #define XFS_FSOP_GEOM_FLAGS_SHARED 0x0020 /* read-only shared */ #define XFS_FSOP_GEOM_FLAGS_EXTFLG 0x0040 /* special extent flag */ #define XFS_FSOP_GEOM_FLAGS_DIRV2 0x0080 /* directory version 2 */ #define XFS_FSOP_GEOM_FLAGS_LOGV2 0x0100 /* log format version 2 */ #define XFS_FSOP_GEOM_FLAGS_SECTOR 0x0200 /* sector sizes >1BB */ #define XFS_FSOP_GEOM_FLAGS_ATTR2 0x0400 /* inline attributes rework */ #define XFS_FSOP_GEOM_FLAGS_DIRV2CI 0x1000 /* ASCII only CI names */ #define XFS_FSOP_GEOM_FLAGS_LAZYSB 0x4000 /* lazy superblock counters */ /* * Minimum and maximum sizes need for growth checks */ #define XFS_MIN_AG_BLOCKS 64 #define XFS_MIN_LOG_BLOCKS 512ULL #define XFS_MAX_LOG_BLOCKS (1024 * 1024ULL) #define XFS_MIN_LOG_BYTES (10 * 1024 * 1024ULL) /* keep the maximum size under 2^31 by a small amount */ #define XFS_MAX_LOG_BYTES \ ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES) /* Used for sanity checks on superblock */ #define XFS_MAX_DBLOCKS(s) ((xfs_drfsbno_t)(s)->sb_agcount * (s)->sb_agblocks) #define XFS_MIN_DBLOCKS(s) ((xfs_drfsbno_t)((s)->sb_agcount - 1) * \ (s)->sb_agblocks + XFS_MIN_AG_BLOCKS) /* * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT */ typedef struct xfs_growfs_data { uint64_t newblocks; /* new data subvol size, fsblocks */ uint32_t imaxpct; /* new inode space percentage limit */ } xfs_growfs_data_t; typedef struct xfs_growfs_log { uint32_t newblocks; /* new log size, fsblocks */ uint32_t isint; /* 1 if new log is internal */ } xfs_growfs_log_t; typedef struct xfs_growfs_rt { uint64_t newblocks; /* new realtime size, fsblocks */ uint32_t extsize; /* new realtime extent size, fsblocks */ } xfs_growfs_rt_t; /* * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE */ typedef struct xfs_bstime { time_t tv_sec; /* seconds */ int32_t tv_nsec; /* and nanoseconds */ } xfs_bstime_t; typedef struct xfs_bstat { uint64_t bs_ino; /* inode number */ __u16 bs_mode; /* type and mode */ __u16 bs_nlink; /* number of links */ uint32_t bs_uid; /* user id */ uint32_t bs_gid; /* group id */ uint32_t bs_rdev; /* device value */ int32_t bs_blksize; /* block size */ int64_t bs_size; /* file size */ xfs_bstime_t bs_atime; /* access time */ xfs_bstime_t bs_mtime; /* modify time */ xfs_bstime_t bs_ctime; /* inode change time */ int64_t bs_blocks; /* number of blocks */ uint32_t bs_xflags; /* extended flags */ int32_t bs_extsize; /* extent size */ int32_t bs_extents; /* number of extents */ uint32_t bs_gen; /* generation count */ __u16 bs_projid_lo; /* lower part of project id */ #define bs_projid bs_projid_lo /* (previously just bs_projid) */ __u16 bs_forkoff; /* inode fork offset in bytes */ __u16 bs_projid_hi; /* higher part of project id */ unsigned char bs_pad[10]; /* pad space, unused */ uint32_t bs_dmevmask; /* DMIG event mask */ __u16 bs_dmstate; /* DMIG state info */ __u16 bs_aextents; /* attribute number of extents */ } xfs_bstat_t; /* * The user-level BulkStat Request interface structure. */ typedef struct xfs_fsop_bulkreq { uint64_t __user *lastip; /* last inode # pointer */ int32_t icount; /* count of entries in buffer */ void __user *ubuffer;/* user buffer for inode desc. */ int32_t __user *ocount; /* output count pointer */ } xfs_fsop_bulkreq_t; /* * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS). */ typedef struct xfs_inogrp { uint64_t xi_startino; /* starting inode number */ int32_t xi_alloccount; /* # bits set in allocmask */ uint64_t xi_allocmask; /* mask of allocated inodes */ } xfs_inogrp_t; /* * Error injection. */ typedef struct xfs_error_injection { int32_t fd; int32_t errtag; } xfs_error_injection_t; /* * The user-level Handle Request interface structure. */ typedef struct xfs_fsop_handlereq { uint32_t fd; /* fd for FD_TO_HANDLE */ void __user *path; /* user pathname */ uint32_t oflags; /* open flags */ void __user *ihandle;/* user supplied handle */ uint32_t ihandlen; /* user supplied length */ void __user *ohandle;/* user buffer for handle */ uint32_t __user *ohandlen;/* user buffer length */ } xfs_fsop_handlereq_t; /* * Compound structures for passing args through Handle Request interfaces * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and * XFS_IOC_ATTRMULTI_BY_HANDLE */ typedef struct xfs_fsop_setdm_handlereq { struct xfs_fsop_handlereq hreq; /* handle information */ struct fsdmidata __user *data; /* DMAPI data */ } xfs_fsop_setdm_handlereq_t; typedef struct xfs_attrlist_cursor { uint32_t opaque[4]; } xfs_attrlist_cursor_t; typedef struct xfs_fsop_attrlist_handlereq { struct xfs_fsop_handlereq hreq; /* handle interface structure */ struct xfs_attrlist_cursor pos; /* opaque cookie, list offset */ uint32_t flags; /* which namespace to use */ uint32_t buflen; /* length of buffer supplied */ void __user *buffer; /* returned names */ } xfs_fsop_attrlist_handlereq_t; typedef struct xfs_attr_multiop { uint32_t am_opcode; #define ATTR_OP_GET 1 /* return the indicated attr's value */ #define ATTR_OP_SET 2 /* set/create the indicated attr/value pair */ #define ATTR_OP_REMOVE 3 /* remove the indicated attr */ int32_t am_error; void __user *am_attrname; void __user *am_attrvalue; uint32_t am_length; uint32_t am_flags; } xfs_attr_multiop_t; typedef struct xfs_fsop_attrmulti_handlereq { struct xfs_fsop_handlereq hreq; /* handle interface structure */ uint32_t opcount;/* count of following multiop */ struct xfs_attr_multiop __user *ops; /* attr_multi data */ } xfs_fsop_attrmulti_handlereq_t; /* * per machine unique filesystem identifier types. */ typedef struct { uint32_t val[2]; } xfs_fsid_t; /* file system id type */ typedef struct xfs_fid { __u16 fid_len; /* length of remainder */ __u16 fid_pad; uint32_t fid_gen; /* generation number */ uint64_t fid_ino; /* 64 bits inode number */ } xfs_fid_t; typedef struct xfs_handle { union { int64_t align; /* force alignment of ha_fid */ xfs_fsid_t _ha_fsid; /* unique file system identifier */ } ha_u; xfs_fid_t ha_fid; /* file system specific file ID */ } xfs_handle_t; #define ha_fsid ha_u._ha_fsid #define XFS_HSIZE(handle) (((char *) &(handle).ha_fid.fid_pad \ - (char *) &(handle)) \ + (handle).ha_fid.fid_len) /* * Flags for going down operation */ #define XFS_FSOP_GOING_FLAGS_DEFAULT 0x0 /* going down */ #define XFS_FSOP_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */ #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */ /* * ioctl commands that are used by Linux filesystems */ #define XFS_IOC_GETXFLAGS FS_IOC_GETFLAGS #define XFS_IOC_SETXFLAGS FS_IOC_SETFLAGS #define XFS_IOC_GETVERSION FS_IOC_GETVERSION /* * ioctl commands that replace IRIX fcntl()'s * For 'documentation' purposed more than anything else, * the "cmd #" field reflects the IRIX fcntl number. */ #define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64) #define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64) #define XFS_IOC_DIOINFO _IOR ('X', 30, struct dioattr) #define XFS_IOC_FSGETXATTR _IOR ('X', 31, struct fsxattr) #define XFS_IOC_FSSETXATTR _IOW ('X', 32, struct fsxattr) #define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64) #define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64) #define XFS_IOC_GETBMAP _IOWR('X', 38, struct getbmap) #define XFS_IOC_FSSETDM _IOW ('X', 39, struct fsdmidata) #define XFS_IOC_RESVSP _IOW ('X', 40, struct xfs_flock64) #define XFS_IOC_UNRESVSP _IOW ('X', 41, struct xfs_flock64) #define XFS_IOC_RESVSP64 _IOW ('X', 42, struct xfs_flock64) #define XFS_IOC_UNRESVSP64 _IOW ('X', 43, struct xfs_flock64) #define XFS_IOC_GETBMAPA _IOWR('X', 44, struct getbmap) #define XFS_IOC_FSGETXATTRA _IOR ('X', 45, struct fsxattr) /* XFS_IOC_SETBIOSIZE ---- deprecated 46 */ /* XFS_IOC_GETBIOSIZE ---- deprecated 47 */ #define XFS_IOC_GETBMAPX _IOWR('X', 56, struct getbmap) #define XFS_IOC_ZERO_RANGE _IOW ('X', 57, struct xfs_flock64) /* * ioctl commands that replace IRIX syssgi()'s */ #define XFS_IOC_FSGEOMETRY_V1 _IOR ('X', 100, struct xfs_fsop_geom_v1) #define XFS_IOC_FSBULKSTAT _IOWR('X', 101, struct xfs_fsop_bulkreq) #define XFS_IOC_FSBULKSTAT_SINGLE _IOWR('X', 102, struct xfs_fsop_bulkreq) #define XFS_IOC_FSINUMBERS _IOWR('X', 103, struct xfs_fsop_bulkreq) #define XFS_IOC_PATH_TO_FSHANDLE _IOWR('X', 104, struct xfs_fsop_handlereq) #define XFS_IOC_PATH_TO_HANDLE _IOWR('X', 105, struct xfs_fsop_handlereq) #define XFS_IOC_FD_TO_HANDLE _IOWR('X', 106, struct xfs_fsop_handlereq) #define XFS_IOC_OPEN_BY_HANDLE _IOWR('X', 107, struct xfs_fsop_handlereq) #define XFS_IOC_READLINK_BY_HANDLE _IOWR('X', 108, struct xfs_fsop_handlereq) #define XFS_IOC_SWAPEXT _IOWR('X', 109, struct xfs_swapext) #define XFS_IOC_FSGROWFSDATA _IOW ('X', 110, struct xfs_growfs_data) #define XFS_IOC_FSGROWFSLOG _IOW ('X', 111, struct xfs_growfs_log) #define XFS_IOC_FSGROWFSRT _IOW ('X', 112, struct xfs_growfs_rt) #define XFS_IOC_FSCOUNTS _IOR ('X', 113, struct xfs_fsop_counts) #define XFS_IOC_SET_RESBLKS _IOWR('X', 114, struct xfs_fsop_resblks) #define XFS_IOC_GET_RESBLKS _IOR ('X', 115, struct xfs_fsop_resblks) #define XFS_IOC_ERROR_INJECTION _IOW ('X', 116, struct xfs_error_injection) #define XFS_IOC_ERROR_CLEARALL _IOW ('X', 117, struct xfs_error_injection) /* XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118 */ /* XFS_IOC_FREEZE -- FIFREEZE 119 */ /* XFS_IOC_THAW -- FITHAW 120 */ #define XFS_IOC_FSSETDM_BY_HANDLE _IOW ('X', 121, struct xfs_fsop_setdm_handlereq) #define XFS_IOC_ATTRLIST_BY_HANDLE _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq) #define XFS_IOC_ATTRMULTI_BY_HANDLE _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq) #define XFS_IOC_FSGEOMETRY _IOR ('X', 124, struct xfs_fsop_geom) #define XFS_IOC_GOINGDOWN _IOR ('X', 125, __uint32_t) /* XFS_IOC_GETFSUUID ---------- deprecated 140 */ #ifndef HAVE_BBMACROS /* * Block I/O parameterization. A basic block (BB) is the lowest size of * filesystem allocation, and must equal 512. Length units given to bio * routines are in BB's. */ #define BBSHIFT 9 #define BBSIZE (1<> BBSHIFT) #define BTOBBT(bytes) ((uint64_t)(bytes) >> BBSHIFT) #define BBTOB(bbs) ((bbs) << BBSHIFT) #endif #endif /* XFS_FS_H_ */