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- /*
- FUSE: Filesystem in Userspace
- Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
- This program can be distributed under the terms of the GNU GPL.
- See the file COPYING.
- */
- /* This file defines the kernel interface of FUSE */
- #include <asm/types.h>
- #include <linux/major.h>
- /** Version number of this interface */
- #define FUSE_KERNEL_VERSION 7
- /** Minor version number of this interface */
- #define FUSE_KERNEL_MINOR_VERSION 8
- /** 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 */
- struct fuse_attr {
- __u64 ino;
- __u64 size;
- __u64 blocks;
- __u64 atime;
- __u64 mtime;
- __u64 ctime;
- __u32 atimensec;
- __u32 mtimensec;
- __u32 ctimensec;
- __u32 mode;
- __u32 nlink;
- __u32 uid;
- __u32 gid;
- __u32 rdev;
- };
- struct fuse_kstatfs {
- __u64 blocks;
- __u64 bfree;
- __u64 bavail;
- __u64 files;
- __u64 ffree;
- __u32 bsize;
- __u32 namelen;
- __u32 frsize;
- __u32 padding;
- __u32 spare[6];
- };
- struct fuse_file_lock {
- __u64 start;
- __u64 end;
- __u32 type;
- __u32 pid; /* tgid */
- };
- /**
- * Bitmasks for fuse_setattr_in.valid
- */
- #define FATTR_MODE (1 << 0)
- #define FATTR_UID (1 << 1)
- #define FATTR_GID (1 << 2)
- #define FATTR_SIZE (1 << 3)
- #define FATTR_ATIME (1 << 4)
- #define FATTR_MTIME (1 << 5)
- #define FATTR_FH (1 << 6)
- /**
- * 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
- */
- #define FOPEN_DIRECT_IO (1 << 0)
- #define FOPEN_KEEP_CACHE (1 << 1)
- /**
- * INIT request/reply flags
- */
- #define FUSE_ASYNC_READ (1 << 0)
- #define FUSE_POSIX_LOCKS (1 << 1)
- /**
- * Release flags
- */
- #define FUSE_RELEASE_FLUSH (1 << 0)
- enum fuse_opcode {
- FUSE_LOOKUP = 1,
- FUSE_FORGET = 2, /* no reply */
- FUSE_GETATTR = 3,
- FUSE_SETATTR = 4,
- FUSE_READLINK = 5,
- FUSE_SYMLINK = 6,
- FUSE_MKNOD = 8,
- FUSE_MKDIR = 9,
- FUSE_UNLINK = 10,
- FUSE_RMDIR = 11,
- FUSE_RENAME = 12,
- FUSE_LINK = 13,
- FUSE_OPEN = 14,
- FUSE_READ = 15,
- FUSE_WRITE = 16,
- FUSE_STATFS = 17,
- FUSE_RELEASE = 18,
- FUSE_FSYNC = 20,
- FUSE_SETXATTR = 21,
- FUSE_GETXATTR = 22,
- FUSE_LISTXATTR = 23,
- FUSE_REMOVEXATTR = 24,
- FUSE_FLUSH = 25,
- FUSE_INIT = 26,
- FUSE_OPENDIR = 27,
- FUSE_READDIR = 28,
- FUSE_RELEASEDIR = 29,
- FUSE_FSYNCDIR = 30,
- FUSE_GETLK = 31,
- FUSE_SETLK = 32,
- FUSE_SETLKW = 33,
- FUSE_ACCESS = 34,
- FUSE_CREATE = 35,
- FUSE_INTERRUPT = 36,
- FUSE_BMAP = 37,
- FUSE_DESTROY = 38,
- };
- /* The read buffer is required to be at least 8k, but may be much larger */
- #define FUSE_MIN_READ_BUFFER 8192
- struct fuse_entry_out {
- __u64 nodeid; /* Inode ID */
- __u64 generation; /* Inode generation: nodeid:gen must
- be unique for the fs's lifetime */
- __u64 entry_valid; /* Cache timeout for the name */
- __u64 attr_valid; /* Cache timeout for the attributes */
- __u32 entry_valid_nsec;
- __u32 attr_valid_nsec;
- struct fuse_attr attr;
- };
- struct fuse_forget_in {
- __u64 nlookup;
- };
- struct fuse_attr_out {
- __u64 attr_valid; /* Cache timeout for the attributes */
- __u32 attr_valid_nsec;
- __u32 dummy;
- struct fuse_attr attr;
- };
- struct fuse_mknod_in {
- __u32 mode;
- __u32 rdev;
- };
- struct fuse_mkdir_in {
- __u32 mode;
- __u32 padding;
- };
- struct fuse_rename_in {
- __u64 newdir;
- };
- struct fuse_link_in {
- __u64 oldnodeid;
- };
- struct fuse_setattr_in {
- __u32 valid;
- __u32 padding;
- __u64 fh;
- __u64 size;
- __u64 unused1;
- __u64 atime;
- __u64 mtime;
- __u64 unused2;
- __u32 atimensec;
- __u32 mtimensec;
- __u32 unused3;
- __u32 mode;
- __u32 unused4;
- __u32 uid;
- __u32 gid;
- __u32 unused5;
- };
- struct fuse_open_in {
- __u32 flags;
- __u32 mode;
- };
- struct fuse_open_out {
- __u64 fh;
- __u32 open_flags;
- __u32 padding;
- };
- struct fuse_release_in {
- __u64 fh;
- __u32 flags;
- __u32 release_flags;
- __u64 lock_owner;
- };
- struct fuse_flush_in {
- __u64 fh;
- __u32 unused;
- __u32 padding;
- __u64 lock_owner;
- };
- struct fuse_read_in {
- __u64 fh;
- __u64 offset;
- __u32 size;
- __u32 padding;
- };
- struct fuse_write_in {
- __u64 fh;
- __u64 offset;
- __u32 size;
- __u32 write_flags;
- };
- struct fuse_write_out {
- __u32 size;
- __u32 padding;
- };
- #define FUSE_COMPAT_STATFS_SIZE 48
- struct fuse_statfs_out {
- struct fuse_kstatfs st;
- };
- struct fuse_fsync_in {
- __u64 fh;
- __u32 fsync_flags;
- __u32 padding;
- };
- struct fuse_setxattr_in {
- __u32 size;
- __u32 flags;
- };
- struct fuse_getxattr_in {
- __u32 size;
- __u32 padding;
- };
- struct fuse_getxattr_out {
- __u32 size;
- __u32 padding;
- };
- struct fuse_lk_in {
- __u64 fh;
- __u64 owner;
- struct fuse_file_lock lk;
- };
- struct fuse_lk_out {
- struct fuse_file_lock lk;
- };
- struct fuse_access_in {
- __u32 mask;
- __u32 padding;
- };
- struct fuse_init_in {
- __u32 major;
- __u32 minor;
- __u32 max_readahead;
- __u32 flags;
- };
- struct fuse_init_out {
- __u32 major;
- __u32 minor;
- __u32 max_readahead;
- __u32 flags;
- __u32 unused;
- __u32 max_write;
- };
- struct fuse_interrupt_in {
- __u64 unique;
- };
- struct fuse_bmap_in {
- __u64 block;
- __u32 blocksize;
- __u32 padding;
- };
- struct fuse_bmap_out {
- __u64 block;
- };
- struct fuse_in_header {
- __u32 len;
- __u32 opcode;
- __u64 unique;
- __u64 nodeid;
- __u32 uid;
- __u32 gid;
- __u32 pid;
- __u32 padding;
- };
- struct fuse_out_header {
- __u32 len;
- __s32 error;
- __u64 unique;
- };
- struct fuse_dirent {
- __u64 ino;
- __u64 off;
- __u32 namelen;
- __u32 type;
- char name[0];
- };
- #define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->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)
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