1 files changed, 334 insertions, 0 deletions

diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
new file mode 100644
index 000000000000..9fcc880d4be2
--- /dev/null
+++ b/include/uapi/linux/fs.h
@@ -0,0 +1,334 @@
+#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
+
+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 {
+        int nr_inodes;
+        int nr_unused;
+        int dummy[5];           /* padding for sysctl ABI compatibility */
+};
+
+
+#define NR_FILE  8192   /* this can well be larger on a larger system */
+
+#define MAY_EXEC                0x00000001
+#define MAY_WRITE               0x00000002
+#define MAY_READ                0x00000004
+#define MAY_APPEND              0x00000008
+#define MAY_ACCESS              0x00000010
+#define MAY_OPEN                0x00000020
+#define MAY_CHDIR               0x00000040
+/* called from RCU mode, don't block */
+#define MAY_NOT_BLOCK           0x00000080
+
+/*
+ * flags in file.f_mode.  Note that FMODE_READ and FMODE_WRITE must correspond
+ * to O_WRONLY and O_RDWR via the strange trick in __dentry_open()
+ */
+
+/* file is open for reading */
+#define FMODE_READ              ((__force fmode_t)0x1)
+/* file is open for writing */
+#define FMODE_WRITE             ((__force fmode_t)0x2)
+/* file is seekable */
+#define FMODE_LSEEK             ((__force fmode_t)0x4)
+/* file can be accessed using pread */
+#define FMODE_PREAD             ((__force fmode_t)0x8)
+/* file can be accessed using pwrite */
+#define FMODE_PWRITE            ((__force fmode_t)0x10)
+/* File is opened for execution with sys_execve / sys_uselib */
+#define FMODE_EXEC              ((__force fmode_t)0x20)
+/* File is opened with O_NDELAY (only set for block devices) */
+#define FMODE_NDELAY            ((__force fmode_t)0x40)
+/* File is opened with O_EXCL (only set for block devices) */
+#define FMODE_EXCL              ((__force fmode_t)0x80)
+/* File is opened using open(.., 3, ..) and is writeable only for ioctls
+   (specialy hack for floppy.c) */
+#define FMODE_WRITE_IOCTL       ((__force fmode_t)0x100)
+/* 32bit hashes as llseek() offset (for directories) */
+#define FMODE_32BITHASH         ((__force fmode_t)0x200)
+/* 64bit hashes as llseek() offset (for directories) */
+#define FMODE_64BITHASH         ((__force fmode_t)0x400)
+
+/*
+ * Don't update ctime and mtime.
+ *
+ * Currently a special hack for the XFS open_by_handle ioctl, but we'll
+ * hopefully graduate it to a proper O_CMTIME flag supported by open(2) soon.
+ */
+#define FMODE_NOCMTIME          ((__force fmode_t)0x800)
+
+/* Expect random access pattern */
+#define FMODE_RANDOM            ((__force fmode_t)0x1000)
+
+/* File is huge (eg. /dev/kmem): treat loff_t as unsigned */
+#define FMODE_UNSIGNED_OFFSET   ((__force fmode_t)0x2000)
+
+/* File is opened with O_PATH; almost nothing can be done with it */
+#define FMODE_PATH              ((__force fmode_t)0x4000)
+
+/* File was opened by fanotify and shouldn't generate fanotify events */
+#define FMODE_NONOTIFY          ((__force fmode_t)0x1000000)
+
+/*
+ * Flag for rw_copy_check_uvector and compat_rw_copy_check_uvector
+ * that indicates that they should check the contents of the iovec are
+ * valid, but not check the memory that the iovec elements
+ * points too.
+ */
+#define CHECK_IOVEC_ONLY -1
+
+#define SEL_IN          1
+#define SEL_OUT         2
+#define SEL_EX          4
+
+/* public flags for file_system_type */
+#define FS_REQUIRES_DEV 1 
+#define FS_BINARY_MOUNTDATA 2
+#define FS_HAS_SUBTYPE 4
+#define FS_REVAL_DOT    16384   /* Check the paths ".", ".." for staleness */
+#define FS_RENAME_DOES_D_MOVE   32768   /* FS will handle d_move()
+                                         * during rename() internally.
+                                         */
+
+/*
+ * 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 */
+#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
+
+/* Inode flags - they have nothing to superblock flags now */
+
+#define S_SYNC          1       /* Writes are synced at once */
+#define S_NOATIME       2       /* Do not update access times */
+#define S_APPEND        4       /* Append-only file */
+#define S_IMMUTABLE     8       /* Immutable file */
+#define S_DEAD          16      /* removed, but still open directory */
+#define S_NOQUOTA       32      /* Inode is not counted to quota */
+#define S_DIRSYNC       64      /* Directory modifications are synchronous */
+#define S_NOCMTIME      128     /* Do not update file c/mtime */
+#define S_SWAPFILE      256     /* Do not truncate: swapon got its bmaps */
+#define S_PRIVATE       512     /* Inode is fs-internal */
+#define S_IMA           1024    /* Inode has an associated IMA struct */
+#define S_AUTOMOUNT     2048    /* Automount/referral quasi-directory */
+#define S_NOSEC         4096    /* no suid or xattr security attributes */
+
+/*
+ * Note that nosuid etc flags are inode-specific: setting some file-system
+ * flags just means all the inodes inherit those flags by default. It might be
+ * possible to override it selectively if you really wanted to with some
+ * ioctl() that is not currently implemented.
+ *
+ * Exception: MS_RDONLY is always applied to the entire file system.
+ *
+ * Unfortunately, it is possible to change a filesystems flags with it mounted
+ * with files in use.  This means that all of the inodes will not have their
+ * i_flags updated.  Hence, i_flags no longer inherit the superblock mount
+ * flags, so these have to be checked separately. -- rmk@arm.uk.linux.org
+ */
+#define __IS_FLG(inode,flg) ((inode)->i_sb->s_flags & (flg))
+
+#define IS_RDONLY(inode) ((inode)->i_sb->s_flags & MS_RDONLY)
+#define IS_SYNC(inode)          (__IS_FLG(inode, MS_SYNCHRONOUS) || \
+                                        ((inode)->i_flags & S_SYNC))
+#define IS_DIRSYNC(inode)       (__IS_FLG(inode, MS_SYNCHRONOUS|MS_DIRSYNC) || \
+                                        ((inode)->i_flags & (S_SYNC|S_DIRSYNC)))
+#define IS_MANDLOCK(inode)      __IS_FLG(inode, MS_MANDLOCK)
+#define IS_NOATIME(inode)   __IS_FLG(inode, MS_RDONLY|MS_NOATIME)
+#define IS_I_VERSION(inode)   __IS_FLG(inode, MS_I_VERSION)
+
+#define IS_NOQUOTA(inode)       ((inode)->i_flags & S_NOQUOTA)
+#define IS_APPEND(inode)        ((inode)->i_flags & S_APPEND)
+#define IS_IMMUTABLE(inode)     ((inode)->i_flags & S_IMMUTABLE)
+#define IS_POSIXACL(inode)      __IS_FLG(inode, MS_POSIXACL)
+
+#define IS_DEADDIR(inode)       ((inode)->i_flags & S_DEAD)
+#define IS_NOCMTIME(inode)      ((inode)->i_flags & S_NOCMTIME)
+#define IS_SWAPFILE(inode)      ((inode)->i_flags & S_SWAPFILE)
+#define IS_PRIVATE(inode)       ((inode)->i_flags & S_PRIVATE)
+#define IS_IMA(inode)           ((inode)->i_flags & S_IMA)
+#define IS_AUTOMOUNT(inode)     ((inode)->i_flags & S_AUTOMOUNT)
+#define IS_NOSEC(inode)         ((inode)->i_flags & S_NOSEC)
+
+/* 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 */