16f52b16cSGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2607ca46eSDavid Howells #ifndef _UAPI_LINUX_FS_H 3607ca46eSDavid Howells #define _UAPI_LINUX_FS_H 4607ca46eSDavid Howells 5607ca46eSDavid Howells /* 668ce7bfcSTheodore Ts'o * This file has definitions for some important file table structures 768ce7bfcSTheodore Ts'o * and constants and structures used by various generic file system 868ce7bfcSTheodore Ts'o * ioctl's. Please do not make any changes in this file before 968ce7bfcSTheodore Ts'o * sending patches for review to linux-fsdevel@vger.kernel.org and 1068ce7bfcSTheodore Ts'o * linux-api@vger.kernel.org. 11607ca46eSDavid Howells */ 12607ca46eSDavid Howells 13607ca46eSDavid Howells #include <linux/limits.h> 14607ca46eSDavid Howells #include <linux/ioctl.h> 15607ca46eSDavid Howells #include <linux/types.h> 167af0ab0dSEric Biggers #ifndef __KERNEL__ 177af0ab0dSEric Biggers #include <linux/fscrypt.h> 187af0ab0dSEric Biggers #endif 19607ca46eSDavid Howells 20e262e32dSDavid Howells /* Use of MS_* flags within the kernel is restricted to core mount(2) code. */ 21e262e32dSDavid Howells #if !defined(__KERNEL__) 22e262e32dSDavid Howells #include <linux/mount.h> 23e262e32dSDavid Howells #endif 24e262e32dSDavid Howells 25607ca46eSDavid Howells /* 26607ca46eSDavid Howells * It's silly to have NR_OPEN bigger than NR_FILE, but you can change 27607ca46eSDavid Howells * the file limit at runtime and only root can increase the per-process 28607ca46eSDavid Howells * nr_file rlimit, so it's safe to set up a ridiculously high absolute 29607ca46eSDavid Howells * upper limit on files-per-process. 30607ca46eSDavid Howells * 31607ca46eSDavid Howells * Some programs (notably those using select()) may have to be 32607ca46eSDavid Howells * recompiled to take full advantage of the new limits.. 33607ca46eSDavid Howells */ 34607ca46eSDavid Howells 35607ca46eSDavid Howells /* Fixed constants first: */ 36607ca46eSDavid Howells #undef NR_OPEN 37607ca46eSDavid Howells #define INR_OPEN_CUR 1024 /* Initial setting for nfile rlimits */ 38607ca46eSDavid Howells #define INR_OPEN_MAX 4096 /* Hard limit for nfile rlimits */ 39607ca46eSDavid Howells 40607ca46eSDavid Howells #define BLOCK_SIZE_BITS 10 41607ca46eSDavid Howells #define BLOCK_SIZE (1<<BLOCK_SIZE_BITS) 42607ca46eSDavid Howells 43607ca46eSDavid Howells #define SEEK_SET 0 /* seek relative to beginning of file */ 44607ca46eSDavid Howells #define SEEK_CUR 1 /* seek relative to current file position */ 45607ca46eSDavid Howells #define SEEK_END 2 /* seek relative to end of file */ 46607ca46eSDavid Howells #define SEEK_DATA 3 /* seek to the next data */ 47607ca46eSDavid Howells #define SEEK_HOLE 4 /* seek to the next hole */ 48607ca46eSDavid Howells #define SEEK_MAX SEEK_HOLE 49607ca46eSDavid Howells 500a7c3937SMiklos Szeredi #define RENAME_NOREPLACE (1 << 0) /* Don't overwrite target */ 51da1ce067SMiklos Szeredi #define RENAME_EXCHANGE (1 << 1) /* Exchange source and dest */ 520d7a8555SMiklos Szeredi #define RENAME_WHITEOUT (1 << 2) /* Whiteout source */ 530a7c3937SMiklos Szeredi 5404b38d60SChristoph Hellwig struct file_clone_range { 5504b38d60SChristoph Hellwig __s64 src_fd; 5604b38d60SChristoph Hellwig __u64 src_offset; 5704b38d60SChristoph Hellwig __u64 src_length; 5804b38d60SChristoph Hellwig __u64 dest_offset; 5904b38d60SChristoph Hellwig }; 6004b38d60SChristoph Hellwig 61607ca46eSDavid Howells struct fstrim_range { 62607ca46eSDavid Howells __u64 start; 63607ca46eSDavid Howells __u64 len; 64607ca46eSDavid Howells __u64 minlen; 65607ca46eSDavid Howells }; 66607ca46eSDavid Howells 6754dbc151SDarrick J. Wong /* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */ 6854dbc151SDarrick J. Wong #define FILE_DEDUPE_RANGE_SAME 0 6954dbc151SDarrick J. Wong #define FILE_DEDUPE_RANGE_DIFFERS 1 7054dbc151SDarrick J. Wong 7154dbc151SDarrick J. Wong /* from struct btrfs_ioctl_file_extent_same_info */ 7254dbc151SDarrick J. Wong struct file_dedupe_range_info { 7354dbc151SDarrick J. Wong __s64 dest_fd; /* in - destination file */ 7454dbc151SDarrick J. Wong __u64 dest_offset; /* in - start of extent in destination */ 7554dbc151SDarrick J. Wong __u64 bytes_deduped; /* out - total # of bytes we were able 7654dbc151SDarrick J. Wong * to dedupe from this file. */ 7754dbc151SDarrick J. Wong /* status of this dedupe operation: 7854dbc151SDarrick J. Wong * < 0 for error 7954dbc151SDarrick J. Wong * == FILE_DEDUPE_RANGE_SAME if dedupe succeeds 8054dbc151SDarrick J. Wong * == FILE_DEDUPE_RANGE_DIFFERS if data differs 8154dbc151SDarrick J. Wong */ 8254dbc151SDarrick J. Wong __s32 status; /* out - see above description */ 8354dbc151SDarrick J. Wong __u32 reserved; /* must be zero */ 8454dbc151SDarrick J. Wong }; 8554dbc151SDarrick J. Wong 8654dbc151SDarrick J. Wong /* from struct btrfs_ioctl_file_extent_same_args */ 8754dbc151SDarrick J. Wong struct file_dedupe_range { 8854dbc151SDarrick J. Wong __u64 src_offset; /* in - start of extent in source */ 8954dbc151SDarrick J. Wong __u64 src_length; /* in - length of extent */ 9054dbc151SDarrick J. Wong __u16 dest_count; /* in - total elements in info array */ 9154dbc151SDarrick J. Wong __u16 reserved1; /* must be zero */ 9254dbc151SDarrick J. Wong __u32 reserved2; /* must be zero */ 93*94dfc73eSGustavo A. R. Silva struct file_dedupe_range_info info[]; 9454dbc151SDarrick J. Wong }; 9554dbc151SDarrick J. Wong 96607ca46eSDavid Howells /* And dynamically-tunable limits and defaults: */ 97607ca46eSDavid Howells struct files_stat_struct { 98607ca46eSDavid Howells unsigned long nr_files; /* read only */ 99607ca46eSDavid Howells unsigned long nr_free_files; /* read only */ 100607ca46eSDavid Howells unsigned long max_files; /* tunable */ 101607ca46eSDavid Howells }; 102607ca46eSDavid Howells 103607ca46eSDavid Howells struct inodes_stat_t { 1043942c07cSGlauber Costa long nr_inodes; 1053942c07cSGlauber Costa long nr_unused; 1063942c07cSGlauber Costa long dummy[5]; /* padding for sysctl ABI compatibility */ 107607ca46eSDavid Howells }; 108607ca46eSDavid Howells 109607ca46eSDavid Howells 110607ca46eSDavid Howells #define NR_FILE 8192 /* this can well be larger on a larger system */ 111607ca46eSDavid Howells 112334e580aSDave Chinner /* 113334e580aSDave Chinner * Structure for FS_IOC_FSGETXATTR[A] and FS_IOC_FSSETXATTR. 114334e580aSDave Chinner */ 115334e580aSDave Chinner struct fsxattr { 116334e580aSDave Chinner __u32 fsx_xflags; /* xflags field value (get/set) */ 117334e580aSDave Chinner __u32 fsx_extsize; /* extsize field value (get/set)*/ 118334e580aSDave Chinner __u32 fsx_nextents; /* nextents field value (get) */ 119334e580aSDave Chinner __u32 fsx_projid; /* project identifier (get/set) */ 1200a6eab8bSDarrick J. Wong __u32 fsx_cowextsize; /* CoW extsize field value (get/set)*/ 1210a6eab8bSDarrick J. Wong unsigned char fsx_pad[8]; 122334e580aSDave Chinner }; 123334e580aSDave Chinner 124334e580aSDave Chinner /* 125334e580aSDave Chinner * Flags for the fsx_xflags field 126334e580aSDave Chinner */ 127334e580aSDave Chinner #define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */ 128334e580aSDave Chinner #define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */ 129334e580aSDave Chinner #define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */ 130334e580aSDave Chinner #define FS_XFLAG_APPEND 0x00000010 /* all writes append */ 131334e580aSDave Chinner #define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */ 132334e580aSDave Chinner #define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */ 133334e580aSDave Chinner #define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */ 134334e580aSDave Chinner #define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */ 135334e580aSDave Chinner #define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */ 136334e580aSDave Chinner #define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */ 137334e580aSDave Chinner #define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */ 138334e580aSDave Chinner #define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */ 139334e580aSDave Chinner #define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */ 140334e580aSDave Chinner #define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */ 14158f88ca2SDave Chinner #define FS_XFLAG_DAX 0x00008000 /* use DAX for IO */ 1420a6eab8bSDarrick J. Wong #define FS_XFLAG_COWEXTSIZE 0x00010000 /* CoW extent size allocator hint */ 143334e580aSDave Chinner #define FS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */ 144334e580aSDave Chinner 145607ca46eSDavid Howells /* the read-only stuff doesn't really belong here, but any other place is 146607ca46eSDavid Howells probably as bad and I don't want to create yet another include file. */ 147607ca46eSDavid Howells 148607ca46eSDavid Howells #define BLKROSET _IO(0x12,93) /* set device read-only (0 = read-write) */ 149607ca46eSDavid Howells #define BLKROGET _IO(0x12,94) /* get read-only status (0 = read_write) */ 150607ca46eSDavid Howells #define BLKRRPART _IO(0x12,95) /* re-read partition table */ 151607ca46eSDavid Howells #define BLKGETSIZE _IO(0x12,96) /* return device size /512 (long *arg) */ 152607ca46eSDavid Howells #define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */ 153607ca46eSDavid Howells #define BLKRASET _IO(0x12,98) /* set read ahead for block device */ 154607ca46eSDavid Howells #define BLKRAGET _IO(0x12,99) /* get current read ahead setting */ 155607ca46eSDavid Howells #define BLKFRASET _IO(0x12,100)/* set filesystem (mm/filemap.c) read-ahead */ 156607ca46eSDavid Howells #define BLKFRAGET _IO(0x12,101)/* get filesystem (mm/filemap.c) read-ahead */ 157607ca46eSDavid Howells #define BLKSECTSET _IO(0x12,102)/* set max sectors per request (ll_rw_blk.c) */ 158607ca46eSDavid Howells #define BLKSECTGET _IO(0x12,103)/* get max sectors per request (ll_rw_blk.c) */ 159607ca46eSDavid Howells #define BLKSSZGET _IO(0x12,104)/* get block device sector size */ 160607ca46eSDavid Howells #if 0 161607ca46eSDavid Howells #define BLKPG _IO(0x12,105)/* See blkpg.h */ 162607ca46eSDavid Howells 163607ca46eSDavid Howells /* Some people are morons. Do not use sizeof! */ 164607ca46eSDavid Howells 165607ca46eSDavid Howells #define BLKELVGET _IOR(0x12,106,size_t)/* elevator get */ 166607ca46eSDavid Howells #define BLKELVSET _IOW(0x12,107,size_t)/* elevator set */ 167607ca46eSDavid Howells /* This was here just to show that the number is taken - 168607ca46eSDavid Howells probably all these _IO(0x12,*) ioctls should be moved to blkpg.h. */ 169607ca46eSDavid Howells #endif 170607ca46eSDavid Howells /* A jump here: 108-111 have been used for various private purposes. */ 171607ca46eSDavid Howells #define BLKBSZGET _IOR(0x12,112,size_t) 172607ca46eSDavid Howells #define BLKBSZSET _IOW(0x12,113,size_t) 173607ca46eSDavid Howells #define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */ 174607ca46eSDavid Howells #define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup) 175607ca46eSDavid Howells #define BLKTRACESTART _IO(0x12,116) 176607ca46eSDavid Howells #define BLKTRACESTOP _IO(0x12,117) 177607ca46eSDavid Howells #define BLKTRACETEARDOWN _IO(0x12,118) 178607ca46eSDavid Howells #define BLKDISCARD _IO(0x12,119) 179607ca46eSDavid Howells #define BLKIOMIN _IO(0x12,120) 180607ca46eSDavid Howells #define BLKIOOPT _IO(0x12,121) 181607ca46eSDavid Howells #define BLKALIGNOFF _IO(0x12,122) 182607ca46eSDavid Howells #define BLKPBSZGET _IO(0x12,123) 183607ca46eSDavid Howells #define BLKDISCARDZEROES _IO(0x12,124) 184607ca46eSDavid Howells #define BLKSECDISCARD _IO(0x12,125) 185607ca46eSDavid Howells #define BLKROTATIONAL _IO(0x12,126) 186607ca46eSDavid Howells #define BLKZEROOUT _IO(0x12,127) 1877957d93bSMatteo Croce #define BLKGETDISKSEQ _IOR(0x12,128,__u64) 1883ed05a98SShaun Tancheff /* 18963c8af56SDamien Le Moal * A jump here: 130-136 are reserved for zoned block devices 1903ed05a98SShaun Tancheff * (see uapi/linux/blkzoned.h) 1913ed05a98SShaun Tancheff */ 192607ca46eSDavid Howells 193607ca46eSDavid Howells #define BMAP_IOCTL 1 /* obsolete - kept for compatibility */ 194607ca46eSDavid Howells #define FIBMAP _IO(0x00,1) /* bmap access */ 195607ca46eSDavid Howells #define FIGETBSZ _IO(0x00,2) /* get the block size used for bmap */ 196607ca46eSDavid Howells #define FIFREEZE _IOWR('X', 119, int) /* Freeze */ 197607ca46eSDavid Howells #define FITHAW _IOWR('X', 120, int) /* Thaw */ 198607ca46eSDavid Howells #define FITRIM _IOWR('X', 121, struct fstrim_range) /* Trim */ 19904b38d60SChristoph Hellwig #define FICLONE _IOW(0x94, 9, int) 20004b38d60SChristoph Hellwig #define FICLONERANGE _IOW(0x94, 13, struct file_clone_range) 20154dbc151SDarrick J. Wong #define FIDEDUPERANGE _IOWR(0x94, 54, struct file_dedupe_range) 202607ca46eSDavid Howells 20362750d04SEric Sandeen #define FSLABEL_MAX 256 /* Max chars for the interface; each fs may differ */ 20462750d04SEric Sandeen 205607ca46eSDavid Howells #define FS_IOC_GETFLAGS _IOR('f', 1, long) 206607ca46eSDavid Howells #define FS_IOC_SETFLAGS _IOW('f', 2, long) 207607ca46eSDavid Howells #define FS_IOC_GETVERSION _IOR('v', 1, long) 208607ca46eSDavid Howells #define FS_IOC_SETVERSION _IOW('v', 2, long) 209607ca46eSDavid Howells #define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap) 210607ca46eSDavid Howells #define FS_IOC32_GETFLAGS _IOR('f', 1, int) 211607ca46eSDavid Howells #define FS_IOC32_SETFLAGS _IOW('f', 2, int) 212607ca46eSDavid Howells #define FS_IOC32_GETVERSION _IOR('v', 1, int) 213607ca46eSDavid Howells #define FS_IOC32_SETVERSION _IOW('v', 2, int) 214334e580aSDave Chinner #define FS_IOC_FSGETXATTR _IOR('X', 31, struct fsxattr) 215334e580aSDave Chinner #define FS_IOC_FSSETXATTR _IOW('X', 32, struct fsxattr) 21662750d04SEric Sandeen #define FS_IOC_GETFSLABEL _IOR(0x94, 49, char[FSLABEL_MAX]) 21762750d04SEric Sandeen #define FS_IOC_SETFSLABEL _IOW(0x94, 50, char[FSLABEL_MAX]) 218607ca46eSDavid Howells 219607ca46eSDavid Howells /* 220607ca46eSDavid Howells * Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS) 22168ce7bfcSTheodore Ts'o * 22268ce7bfcSTheodore Ts'o * Note: for historical reasons, these flags were originally used and 22368ce7bfcSTheodore Ts'o * defined for use by ext2/ext3, and then other file systems started 22468ce7bfcSTheodore Ts'o * using these flags so they wouldn't need to write their own version 22568ce7bfcSTheodore Ts'o * of chattr/lsattr (which was shipped as part of e2fsprogs). You 22668ce7bfcSTheodore Ts'o * should think twice before trying to use these flags in new 22768ce7bfcSTheodore Ts'o * contexts, or trying to assign these flags, since they are used both 22868ce7bfcSTheodore Ts'o * as the UAPI and the on-disk encoding for ext2/3/4. Also, we are 22968ce7bfcSTheodore Ts'o * almost out of 32-bit flags. :-) 23068ce7bfcSTheodore Ts'o * 23168ce7bfcSTheodore Ts'o * We have recently hoisted FS_IOC_FSGETXATTR / FS_IOC_FSSETXATTR from 23268ce7bfcSTheodore Ts'o * XFS to the generic FS level interface. This uses a structure that 23368ce7bfcSTheodore Ts'o * has padding and hence has more room to grow, so it may be more 23468ce7bfcSTheodore Ts'o * appropriate for many new use cases. 23568ce7bfcSTheodore Ts'o * 23668ce7bfcSTheodore Ts'o * Please do not change these flags or interfaces before checking with 23768ce7bfcSTheodore Ts'o * linux-fsdevel@vger.kernel.org and linux-api@vger.kernel.org. 238607ca46eSDavid Howells */ 239607ca46eSDavid Howells #define FS_SECRM_FL 0x00000001 /* Secure deletion */ 240607ca46eSDavid Howells #define FS_UNRM_FL 0x00000002 /* Undelete */ 241607ca46eSDavid Howells #define FS_COMPR_FL 0x00000004 /* Compress file */ 242607ca46eSDavid Howells #define FS_SYNC_FL 0x00000008 /* Synchronous updates */ 243607ca46eSDavid Howells #define FS_IMMUTABLE_FL 0x00000010 /* Immutable file */ 244607ca46eSDavid Howells #define FS_APPEND_FL 0x00000020 /* writes to file may only append */ 245607ca46eSDavid Howells #define FS_NODUMP_FL 0x00000040 /* do not dump file */ 246607ca46eSDavid Howells #define FS_NOATIME_FL 0x00000080 /* do not update atime */ 247607ca46eSDavid Howells /* Reserved for compression usage... */ 248607ca46eSDavid Howells #define FS_DIRTY_FL 0x00000100 249607ca46eSDavid Howells #define FS_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ 250607ca46eSDavid Howells #define FS_NOCOMP_FL 0x00000400 /* Don't compress */ 251607ca46eSDavid Howells /* End compression flags --- maybe not all used */ 25268ce7bfcSTheodore Ts'o #define FS_ENCRYPT_FL 0x00000800 /* Encrypted file */ 253607ca46eSDavid Howells #define FS_BTREE_FL 0x00001000 /* btree format dir */ 254607ca46eSDavid Howells #define FS_INDEX_FL 0x00001000 /* hash-indexed directory */ 255607ca46eSDavid Howells #define FS_IMAGIC_FL 0x00002000 /* AFS directory */ 256607ca46eSDavid Howells #define FS_JOURNAL_DATA_FL 0x00004000 /* Reserved for ext3 */ 257607ca46eSDavid Howells #define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */ 258607ca46eSDavid Howells #define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ 259607ca46eSDavid Howells #define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ 26068ce7bfcSTheodore Ts'o #define FS_HUGE_FILE_FL 0x00040000 /* Reserved for ext4 */ 261607ca46eSDavid Howells #define FS_EXTENT_FL 0x00080000 /* Extents */ 262fe9918d3SEric Biggers #define FS_VERITY_FL 0x00100000 /* Verity protected inode */ 26368ce7bfcSTheodore Ts'o #define FS_EA_INODE_FL 0x00200000 /* Inode used for large EA */ 26468ce7bfcSTheodore Ts'o #define FS_EOFBLOCKS_FL 0x00400000 /* Reserved for ext4 */ 265607ca46eSDavid Howells #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ 266b383a73fSIra Weiny #define FS_DAX_FL 0x02000000 /* Inode is DAX */ 26768ce7bfcSTheodore Ts'o #define FS_INLINE_DATA_FL 0x10000000 /* Reserved for ext4 */ 2688b4953e1STheodore Ts'o #define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ 26971e90b46SDaniel Rosenberg #define FS_CASEFOLD_FL 0x40000000 /* Folder is case insensitive */ 270607ca46eSDavid Howells #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ 271607ca46eSDavid Howells 272607ca46eSDavid Howells #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ 273607ca46eSDavid Howells #define FS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ 274607ca46eSDavid Howells 275607ca46eSDavid Howells 276607ca46eSDavid Howells #define SYNC_FILE_RANGE_WAIT_BEFORE 1 277607ca46eSDavid Howells #define SYNC_FILE_RANGE_WRITE 2 278607ca46eSDavid Howells #define SYNC_FILE_RANGE_WAIT_AFTER 4 279c553ea4fSAmir Goldstein #define SYNC_FILE_RANGE_WRITE_AND_WAIT (SYNC_FILE_RANGE_WRITE | \ 280c553ea4fSAmir Goldstein SYNC_FILE_RANGE_WAIT_BEFORE | \ 281c553ea4fSAmir Goldstein SYNC_FILE_RANGE_WAIT_AFTER) 282607ca46eSDavid Howells 283ddef7ed2SChristoph Hellwig /* 284ddef7ed2SChristoph Hellwig * Flags for preadv2/pwritev2: 285ddef7ed2SChristoph Hellwig */ 28697be7ebeSChristoph Hellwig 287ddef7ed2SChristoph Hellwig typedef int __bitwise __kernel_rwf_t; 288ddef7ed2SChristoph Hellwig 289ddef7ed2SChristoph Hellwig /* high priority request, poll if possible */ 290ddef7ed2SChristoph Hellwig #define RWF_HIPRI ((__force __kernel_rwf_t)0x00000001) 291ddef7ed2SChristoph Hellwig 292ddef7ed2SChristoph Hellwig /* per-IO O_DSYNC */ 293ddef7ed2SChristoph Hellwig #define RWF_DSYNC ((__force __kernel_rwf_t)0x00000002) 294ddef7ed2SChristoph Hellwig 295ddef7ed2SChristoph Hellwig /* per-IO O_SYNC */ 296ddef7ed2SChristoph Hellwig #define RWF_SYNC ((__force __kernel_rwf_t)0x00000004) 297ddef7ed2SChristoph Hellwig 298ddef7ed2SChristoph Hellwig /* per-IO, return -EAGAIN if operation would block */ 299ddef7ed2SChristoph Hellwig #define RWF_NOWAIT ((__force __kernel_rwf_t)0x00000008) 300ddef7ed2SChristoph Hellwig 301e1fc742eSJürg Billeter /* per-IO O_APPEND */ 302e1fc742eSJürg Billeter #define RWF_APPEND ((__force __kernel_rwf_t)0x00000010) 303e1fc742eSJürg Billeter 304ddef7ed2SChristoph Hellwig /* mask of flags supported by the kernel */ 305e1fc742eSJürg Billeter #define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT |\ 306e1fc742eSJürg Billeter RWF_APPEND) 307fdd2f5b7SGoldwyn Rodrigues 308607ca46eSDavid Howells #endif /* _UAPI_LINUX_FS_H */ 309