| #ifndef _UAPI_LINUX_FS_H |
| #define _UAPI_LINUX_FS_H |
| |
| /* |
| * This file has definitions for some important file table |
| * structures etc. |
| */ |
| |
| #include <linux/limits.h> |
| #include <linux/ioctl.h> |
| #include <linux/types.h> |
| |
| /* |
| * It's silly to have NR_OPEN bigger than NR_FILE, but you can change |
| * the file limit at runtime and only root can increase the per-process |
| * nr_file rlimit, so it's safe to set up a ridiculously high absolute |
| * upper limit on files-per-process. |
| * |
| * Some programs (notably those using select()) may have to be |
| * recompiled to take full advantage of the new limits.. |
| */ |
| |
| /* Fixed constants first: */ |
| #undef NR_OPEN |
| #define INR_OPEN_CUR 1024 /* Initial setting for nfile rlimits */ |
| #define INR_OPEN_MAX 4096 /* Hard limit for nfile rlimits */ |
| |
| #define BLOCK_SIZE_BITS 10 |
| #define BLOCK_SIZE (1<<BLOCK_SIZE_BITS) |
| |
| #define SEEK_SET 0 /* seek relative to beginning of file */ |
| #define SEEK_CUR 1 /* seek relative to current file position */ |
| #define SEEK_END 2 /* seek relative to end of file */ |
| #define SEEK_DATA 3 /* seek to the next data */ |
| #define SEEK_HOLE 4 /* seek to the next hole */ |
| #define SEEK_MAX SEEK_HOLE |
| |
| #define RENAME_NOREPLACE (1 << 0) /* Don't overwrite target */ |
| #define RENAME_EXCHANGE (1 << 1) /* Exchange source and dest */ |
| |
| struct fstrim_range { |
| __u64 start; |
| __u64 len; |
| __u64 minlen; |
| }; |
| |
| /* And dynamically-tunable limits and defaults: */ |
| struct files_stat_struct { |
| unsigned long nr_files; /* read only */ |
| unsigned long nr_free_files; /* read only */ |
| unsigned long max_files; /* tunable */ |
| }; |
| |
| struct inodes_stat_t { |
| long nr_inodes; |
| long nr_unused; |
| long dummy[5]; /* padding for sysctl ABI compatibility */ |
| }; |
| |
| |
| #define NR_FILE 8192 /* this can well be larger on a larger system */ |
| |
| |
| /* |
| * These are the fs-independent mount-flags: up to 32 flags are supported |
| */ |
| #define MS_RDONLY 1 /* Mount read-only */ |
| #define MS_NOSUID 2 /* Ignore suid and sgid bits */ |
| #define MS_NODEV 4 /* Disallow access to device special files */ |
| #define MS_NOEXEC 8 /* Disallow program execution */ |
| #define MS_SYNCHRONOUS 16 /* Writes are synced at once */ |
| #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ |
| #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ |
| #define MS_DIRSYNC 128 /* Directory modifications are synchronous */ |
| #define MS_NOATIME 1024 /* Do not update access times. */ |
| #define MS_NODIRATIME 2048 /* Do not update directory access times */ |
| #define MS_BIND 4096 |
| #define MS_MOVE 8192 |
| #define MS_REC 16384 |
| #define MS_VERBOSE 32768 /* War is peace. Verbosity is silence. |
| MS_VERBOSE is deprecated. */ |
| #define MS_SILENT 32768 |
| #define MS_POSIXACL (1<<16) /* VFS does not apply the umask */ |
| #define MS_UNBINDABLE (1<<17) /* change to unbindable */ |
| #define MS_PRIVATE (1<<18) /* change to private */ |
| #define MS_SLAVE (1<<19) /* change to slave */ |
| #define MS_SHARED (1<<20) /* change to shared */ |
| #define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */ |
| #define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */ |
| #define MS_I_VERSION (1<<23) /* Update inode I_version field */ |
| #define MS_STRICTATIME (1<<24) /* Always perform atime updates */ |
| |
| /* These sb flags are internal to the kernel */ |
| #define MS_NOSEC (1<<28) |
| #define MS_BORN (1<<29) |
| #define MS_ACTIVE (1<<30) |
| #define MS_NOUSER (1<<31) |
| |
| /* |
| * Superblock flags that can be altered by MS_REMOUNT |
| */ |
| #define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION) |
| |
| /* |
| * Old magic mount flag and mask |
| */ |
| #define MS_MGC_VAL 0xC0ED0000 |
| #define MS_MGC_MSK 0xffff0000 |
| |
| /* the read-only stuff doesn't really belong here, but any other place is |
| probably as bad and I don't want to create yet another include file. */ |
| |
| #define BLKROSET _IO(0x12,93) /* set device read-only (0 = read-write) */ |
| #define BLKROGET _IO(0x12,94) /* get read-only status (0 = read_write) */ |
| #define BLKRRPART _IO(0x12,95) /* re-read partition table */ |
| #define BLKGETSIZE _IO(0x12,96) /* return device size /512 (long *arg) */ |
| #define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */ |
| #define BLKRASET _IO(0x12,98) /* set read ahead for block device */ |
| #define BLKRAGET _IO(0x12,99) /* get current read ahead setting */ |
| #define BLKFRASET _IO(0x12,100)/* set filesystem (mm/filemap.c) read-ahead */ |
| #define BLKFRAGET _IO(0x12,101)/* get filesystem (mm/filemap.c) read-ahead */ |
| #define BLKSECTSET _IO(0x12,102)/* set max sectors per request (ll_rw_blk.c) */ |
| #define BLKSECTGET _IO(0x12,103)/* get max sectors per request (ll_rw_blk.c) */ |
| #define BLKSSZGET _IO(0x12,104)/* get block device sector size */ |
| #if 0 |
| #define BLKPG _IO(0x12,105)/* See blkpg.h */ |
| |
| /* Some people are morons. Do not use sizeof! */ |
| |
| #define BLKELVGET _IOR(0x12,106,size_t)/* elevator get */ |
| #define BLKELVSET _IOW(0x12,107,size_t)/* elevator set */ |
| /* This was here just to show that the number is taken - |
| probably all these _IO(0x12,*) ioctls should be moved to blkpg.h. */ |
| #endif |
| /* A jump here: 108-111 have been used for various private purposes. */ |
| #define BLKBSZGET _IOR(0x12,112,size_t) |
| #define BLKBSZSET _IOW(0x12,113,size_t) |
| #define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */ |
| #define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup) |
| #define BLKTRACESTART _IO(0x12,116) |
| #define BLKTRACESTOP _IO(0x12,117) |
| #define BLKTRACETEARDOWN _IO(0x12,118) |
| #define BLKDISCARD _IO(0x12,119) |
| #define BLKIOMIN _IO(0x12,120) |
| #define BLKIOOPT _IO(0x12,121) |
| #define BLKALIGNOFF _IO(0x12,122) |
| #define BLKPBSZGET _IO(0x12,123) |
| #define BLKDISCARDZEROES _IO(0x12,124) |
| #define BLKSECDISCARD _IO(0x12,125) |
| #define BLKROTATIONAL _IO(0x12,126) |
| #define BLKZEROOUT _IO(0x12,127) |
| |
| #define BMAP_IOCTL 1 /* obsolete - kept for compatibility */ |
| #define FIBMAP _IO(0x00,1) /* bmap access */ |
| #define FIGETBSZ _IO(0x00,2) /* get the block size used for bmap */ |
| #define FIFREEZE _IOWR('X', 119, int) /* Freeze */ |
| #define FITHAW _IOWR('X', 120, int) /* Thaw */ |
| #define FITRIM _IOWR('X', 121, struct fstrim_range) /* Trim */ |
| |
| #define FS_IOC_GETFLAGS _IOR('f', 1, long) |
| #define FS_IOC_SETFLAGS _IOW('f', 2, long) |
| #define FS_IOC_GETVERSION _IOR('v', 1, long) |
| #define FS_IOC_SETVERSION _IOW('v', 2, long) |
| #define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap) |
| #define FS_IOC32_GETFLAGS _IOR('f', 1, int) |
| #define FS_IOC32_SETFLAGS _IOW('f', 2, int) |
| #define FS_IOC32_GETVERSION _IOR('v', 1, int) |
| #define FS_IOC32_SETVERSION _IOW('v', 2, int) |
| |
| /* |
| * Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS) |
| */ |
| #define FS_SECRM_FL 0x00000001 /* Secure deletion */ |
| #define FS_UNRM_FL 0x00000002 /* Undelete */ |
| #define FS_COMPR_FL 0x00000004 /* Compress file */ |
| #define FS_SYNC_FL 0x00000008 /* Synchronous updates */ |
| #define FS_IMMUTABLE_FL 0x00000010 /* Immutable file */ |
| #define FS_APPEND_FL 0x00000020 /* writes to file may only append */ |
| #define FS_NODUMP_FL 0x00000040 /* do not dump file */ |
| #define FS_NOATIME_FL 0x00000080 /* do not update atime */ |
| /* Reserved for compression usage... */ |
| #define FS_DIRTY_FL 0x00000100 |
| #define FS_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ |
| #define FS_NOCOMP_FL 0x00000400 /* Don't compress */ |
| #define FS_ECOMPR_FL 0x00000800 /* Compression error */ |
| /* End compression flags --- maybe not all used */ |
| #define FS_BTREE_FL 0x00001000 /* btree format dir */ |
| #define FS_INDEX_FL 0x00001000 /* hash-indexed directory */ |
| #define FS_IMAGIC_FL 0x00002000 /* AFS directory */ |
| #define FS_JOURNAL_DATA_FL 0x00004000 /* Reserved for ext3 */ |
| #define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */ |
| #define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ |
| #define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ |
| #define FS_EXTENT_FL 0x00080000 /* Extents */ |
| #define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */ |
| #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ |
| #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ |
| |
| #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ |
| #define FS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ |
| |
| |
| #define SYNC_FILE_RANGE_WAIT_BEFORE 1 |
| #define SYNC_FILE_RANGE_WRITE 2 |
| #define SYNC_FILE_RANGE_WAIT_AFTER 4 |
| |
| #endif /* _UAPI_LINUX_FS_H */ |
