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Update fuse_kernel header.

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Bring in the changes from the FUSE kernel interface 7.10
(available under a BSD license).

After 7.10 the linux FUSE developers added support for a
controversial CUSE driver and some linux especific
features that are unlikely to find its way into FreeBSD.

We currently don't implement any of the new features so we
are *not* bumping the FUSE_KERNEL_MINOR_VERSION. The header
should, nevertheless, serve  as a template to add the new
features in a compatible manner.

While here adopt some minor cleanups from the upstream version
like removing FUSE_MAJOR and FUSE_MINOR which were never
used. Also add multiple inclusion header guards,
This commit is contained in:
pfg 2013-07-15 00:05:27 +00:00
parent 3f85c7a457
commit 2bfbfc539c
1 changed files with 85 additions and 11 deletions
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96
sys/fs/fuse/fuse_kernel.h
View File

@ -34,14 +34,32 @@
* $FreeBSD$
*/
/*
* This file defines the kernel interface of FUSE
*
* Protocol changelog:
*
* 7.9:
* - new fuse_getattr_in input argument of GETATTR
* - add lk_flags in fuse_lk_in
* - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
* - add blksize field to fuse_attr
* - add file flags field to fuse_read_in and fuse_write_in
*
* 7.10
* - add nonseekable open flag
*/
#ifndef _FS_FUSE_FUSE_KERNEL_H_
#define _FS_FUSE_FUSE_KERNEL_H_
#ifndef linux
#include <sys/types.h>
#define __u64 uint64_t
#define __u32 uint32_t
#define __s32 int32_t
#else
#include <asm/types.h>
#include <linux/major.h>
#include <linux/types.h>
#endif
/** Version number of this interface */
@ -53,12 +71,6 @@
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
/** The major number of the fuse character device */
#define FUSE_MAJOR MISC_MAJOR
/** The minor number of the fuse character device */
#define FUSE_MINOR 229
/* Make sure all structures are padded to 64bit boundary, so 32bit
userspace works under 64bit kernels */
@ -79,7 +91,7 @@ struct fuse_attr {
__u32 uid;
__u32 gid;
__u32 rdev;
__u32 padding;
__u32 blksize;
};
struct fuse_kstatfs {
@ -112,27 +124,62 @@ struct fuse_file_lock {
#define FATTR_ATIME (1 << 4)
#define FATTR_MTIME (1 << 5)
#define FATTR_FH (1 << 6)
#define FATTR_ATIME_NOW (1 << 7)
#define FATTR_MTIME_NOW (1 << 8)
#define FATTR_LOCKOWNER (1 << 9)
/**
* Flags returned by the OPEN request
*
* FOPEN_DIRECT_IO: bypass page cache for this open file
* FOPEN_KEEP_CACHE: don't invalidate the data cache on open
* FOPEN_NONSEEKABLE: the file is not seekable
*/
#define FOPEN_DIRECT_IO (1 << 0)
#define FOPEN_KEEP_CACHE (1 << 1)
#define FOPEN_NONSEEKABLE (1 << 2)
/**
* INIT request/reply flags
*
* FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
*/
#define FUSE_ASYNC_READ (1 << 0)
#define FUSE_POSIX_LOCKS (1 << 1)
#define FUSE_FILE_OPS (1 << 2)
#define FUSE_ATOMIC_O_TRUNC (1 << 3)
#define FUSE_EXPORT_SUPPORT (1 << 4)
#define FUSE_BIG_WRITES (1 << 5)
/**
* Release flags
*/
#define FUSE_RELEASE_FLUSH (1 << 0)
/**
* Getattr flags
*/
#define FUSE_GETATTR_FH (1 << 0)
/**
* Lock flags
*/
#define FUSE_LK_FLOCK (1 << 0)
/**
* WRITE flags
*
* FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
* FUSE_WRITE_LOCKOWNER: lock_owner field is valid
*/
#define FUSE_WRITE_CACHE (1 << 0)
#define FUSE_WRITE_LOCKOWNER (1 << 1)
/**
* Read flags
*/
#define FUSE_READ_LOCKOWNER (1 << 1)
enum fuse_opcode {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2, /* no reply */
@ -175,6 +222,8 @@ enum fuse_opcode {
/* The read buffer is required to be at least 8k, but may be much larger */
#define FUSE_MIN_READ_BUFFER 8192
#define FUSE_COMPAT_ENTRY_OUT_SIZE 120
struct fuse_entry_out {
__u64 nodeid; /* Inode ID */
__u64 generation; /* Inode generation: nodeid:gen must
@ -190,6 +239,14 @@ struct fuse_forget_in {
__u64 nlookup;
};
struct fuse_getattr_in {
__u32 getattr_flags;
__u32 dummy;
__u64 fh;
};
#define FUSE_COMPAT_ATTR_OUT_SIZE 96
struct fuse_attr_out {
__u64 attr_valid; /* Cache timeout for the attributes */
__u32 attr_valid_nsec;
@ -197,6 +254,11 @@ struct fuse_attr_out {
struct fuse_attr attr;
};
struct fuse_mknod_in {
__u32 mode;
__u32 rdev;
};
struct fuse_mkdir_in {
__u32 mode;
__u32 padding;
@ -215,7 +277,7 @@ struct fuse_setattr_in {
__u32 padding;
__u64 fh;
__u64 size;
__u64 unused1;
__u64 lock_owner;
__u64 atime;
__u64 mtime;
__u64 unused2;
@ -258,14 +320,22 @@ struct fuse_read_in {
__u64 fh;
__u64 offset;
__u32 size;
__u32 read_flags;
__u64 lock_owner;
__u32 flags;
__u32 padding;
};
#define FUSE_COMPAT_WRITE_IN_SIZE 24
struct fuse_write_in {
__u64 fh;
__u64 offset;
__u32 size;
__u32 write_flags;
__u64 lock_owner;
__u32 flags;
__u32 padding;
};
struct fuse_write_out {
@ -304,6 +374,8 @@ struct fuse_lk_in {
__u64 fh;
__u64 owner;
struct fuse_file_lock lk;
__u32 lk_flags;
__u32 padding;
};
struct fuse_lk_out {
@ -367,10 +439,12 @@ struct fuse_dirent {
__u64 off;
__u32 namelen;
__u32 type;
char name[0];
char name[];
};
#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
#define FUSE_DIRENT_SIZE(d) \
FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
#endif /* !_FS_FUSE_FUSE_KERNEL_H_ */