i missed a file

1 files changed, 151 insertions, 0 deletions

diff --git a/sys/sys/fusebuf.h b/sys/sys/fusebuf.h
new file mode 100644
index 00000000000..60efc48bf3d
--- /dev/null
+++ b/sys/sys/fusebuf.h
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2013 Sylvestre Gallon
+ * Copyright (c) 2013 Martin Pieuchot
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _SYS_FUSEBUF_H_
+#define _SYS_FUSEBUF_H_
+
+/*
+ * Fusebufs are of a single size, PAGE_SIZE, and cannot be bigger.This
+ * restriction is due to the fact that we allocate the fusebuf(9) with
+ * pool_get(9) and that it does not support size >= to PAGE_SIZE
+ */
+
+#define FUSEFDSIZE	sizeof(((struct fusebuf *)0)->F_dat.FD)
+#define FUSELEN		(PAGE_SIZE - sizeof(struct fb_hdr) - sizeof(union uFD))
+
+/* header at beginning of each fusebuf(9): */
+struct fb_hdr {
+	SIMPLEQ_ENTRY(fusebuf)	fh_next;	/* next buffer in chain */
+	size_t			fh_len;		/* Amount of data */
+	size_t			fh_resid;	/* Needed for partial rw */
+	uint32_t		fh_err;		/* Err code to pass back */
+	int			fh_type;	/* type of data */
+	ino_t			fh_ino;		/* Inode of this fusebuf(9) */
+	uint64_t		fh_uuid;	/* Uuid to track the answer */
+};
+
+/* header for fuse file operations (like read/write/mkdir): */
+struct fb_io {
+	uint64_t	fi_fd;		/* fd where the io is performed */
+	ino_t           fi_ino;		/* ino for the io */
+	off_t		fi_off;		/* offset for the io */
+	size_t		fi_len;		/* Length of data */
+	mode_t		fi_mode;	/* mode for fd */
+	uint32_t	fi_flags;	/* flags on transfer */
+};
+
+/*
+ * An operation is issued by the kernel through fuse(4) when the
+ * userland file system needs to execute an action (mkdir(2),
+ * link(2), etc).
+ *
+ * F_databuf can be superior to FUSELEN for fusefs_read, fusefs_writes and
+ * fusefs_readdir. If it is the case the transfer will be split in N
+ * fusebuf(9) with a changing offset in FD_io.
+ *
+ * When the userland file system answers to this operation it uses
+ * the same ID (fh_uuid).
+ */
+struct fusebuf {
+	struct fb_hdr	fb_hdr;
+	struct {
+		union uFD {
+			struct statvfs	FD_stat;	/* vfs statfs */
+			struct vattr	FD_vattr;	/* for attr vnops */
+			struct fb_io	FD_io;		/* for file io vnops */
+
+		} FD;
+		char	F_databuf[FUSELEN];
+	} F_dat;
+};
+
+#define fb_next		fb_hdr.fh_next
+#define fb_len		fb_hdr.fh_len
+#define fb_resid	fb_hdr.fh_resid
+#define fb_err		fb_hdr.fh_err
+#define fb_type		fb_hdr.fh_type
+#define fb_ino		fb_hdr.fh_ino
+#define fb_uuid		fb_hdr.fh_uuid
+
+#define fb_stat		F_dat.FD.FD_stat
+#define fb_vattr	F_dat.FD.FD_vattr
+#define fb_io_fd	F_dat.FD.FD_io.fi_fd
+#define fb_io_ino	F_dat.FD.FD_io.fi_ino
+#define fb_io_off	F_dat.FD.FD_io.fi_off
+#define fb_io_len	F_dat.FD.FD_io.fi_len
+#define fb_io_mode	F_dat.FD.FD_io.fi_mode
+#define fb_io_flags	F_dat.FD.FD_io.fi_flags
+#define	fb_dat		F_dat.F_databuf
+
+/*
+ * Macros for type conversion
+ * fbtod(fb,t) -	convert fusebuf(9) pointer to data pointer of correct
+ *			type
+ */
+#define	fbtod(fb,t)	((t)((fb)->fb_dat))
+
+/* helper to get F_databuf size */
+#define fbdatsize(fb)	((fb)->fb_len - FUSEFDSIZE)
+
+/* flags needed by setattr */
+#define FUSE_FATTR_MODE		(1 << 0)
+#define FUSE_FATTR_UID		(1 << 1)
+#define FUSE_FATTR_GID		(1 << 2)
+#define FUSE_FATTR_SIZE		(1 << 3)
+#define FUSE_FATTR_ATIME	(1 << 4)
+#define FUSE_FATTR_MTIME	(1 << 5)
+#define FUSE_FATTR_FH		(1 << 6)
+
+/* fusebuf(9) types */
+#define	FBT_LOOKUP	0
+#define FBT_GETATTR	1
+#define FBT_SETATTR	2
+#define FBT_READLINK	3
+#define FBT_SYMLINK	4
+#define FBT_MKNOD	5
+#define FBT_MKDIR	6
+#define FBT_UNLINK	7
+#define FBT_RMDIR	8
+#define FBT_RENAME	9
+#define FBT_LINK	10
+#define FBT_OPEN	11
+#define FBT_READ	12
+#define FBT_WRITE	13
+#define FBT_STATFS	14
+#define FBT_RELEASE	16
+#define FBT_FSYNC	17
+#define FBT_FLUSH	18
+#define FBT_INIT	19
+#define FBT_OPENDIR	20
+#define FBT_READDIR	21
+#define FBT_RELEASEDIR	22
+#define FBT_FSYNCDIR	23
+#define FBT_ACCESS	24
+#define FBT_CREATE	25
+#define FBT_DESTROY	26
+
+#ifdef _KERNEL
+
+/* The node ID of the root inode */
+#define FUSE_ROOT_ID	1
+
+/* fusebuf(9) prototypes */
+struct	fusebuf *fb_setup(size_t, ino_t, int, struct proc *);
+int	fb_queue(dev_t, struct fusebuf *);
+
+#endif /* _KERNEL */
+#endif /* _SYS_FUSEBUF_H_ */