Unexport some bits of linux/fs.h

There are some bits of linux/fs.h which are only used within the kernel and
shouldn't be in the UAPI.  Move these from uapi/linux/fs.h into linux/fs.h.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 130 insertions, 0 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 001c7cff2d48..8b53931b5a74 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -64,6 +64,77 @@ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
 			ssize_t bytes, void *private, int ret,
 			bool is_async);
 
+#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
+
 /*
  * The below are the various read and write types that we support. Some of
  * them include behavioral modifiers that send information down to the
@@ -1557,6 +1628,60 @@ struct super_operations {
 };
 
 /*
+ * Inode flags - they have no relation 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)
+
+/*
  * Inode state bits.  Protected by inode->i_lock
  *
  * Three bits determine the dirty state of the inode, I_DIRTY_SYNC,
@@ -1688,6 +1813,11 @@ int sync_inode_metadata(struct inode *inode, int wait);
 struct file_system_type {
 	const char *name;
 	int fs_flags;
+#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. */
 	struct dentry *(*mount) (struct file_system_type *, int,
 		       const char *, void *);
 	void (*kill_sb) (struct super_block *);