[qemu.git] / hw / virtio-9p.h

#ifndef _QEMU_VIRTIO_9P_H
#define _QEMU_VIRTIO_9P_H

#include <sys/types.h>
#include <dirent.h>
#include <sys/time.h>
#include <utime.h>

#include "file-op-9p.h"

/* The feature bitmap for virtio 9P */
/* The mount point is specified in a config variable */
#define VIRTIO_9P_MOUNT_TAG 0

enum {
    P9_TSTATFS = 8,
    P9_RSTATFS,
    P9_TLOPEN = 12,
    P9_RLOPEN,
    P9_TLCREATE = 14,
    P9_RLCREATE,
    P9_TSYMLINK = 16,
    P9_RSYMLINK,
    P9_TMKNOD = 18,
    P9_RMKNOD,
    P9_TRENAME = 20,
    P9_RRENAME,
    P9_TGETATTR = 24,
    P9_RGETATTR,
    P9_TSETATTR = 26,
    P9_RSETATTR,
    P9_TXATTRWALK = 30,
    P9_RXATTRWALK,
    P9_TXATTRCREATE = 32,
    P9_RXATTRCREATE,
    P9_TREADDIR = 40,
    P9_RREADDIR,
    P9_TLINK = 70,
    P9_RLINK,
    P9_TMKDIR = 72,
    P9_RMKDIR,
    P9_TVERSION = 100,
    P9_RVERSION,
    P9_TAUTH = 102,
    P9_RAUTH,
    P9_TATTACH = 104,
    P9_RATTACH,
    P9_TERROR = 106,
    P9_RERROR,
    P9_TFLUSH = 108,
    P9_RFLUSH,
    P9_TWALK = 110,
    P9_RWALK,
    P9_TOPEN = 112,
    P9_ROPEN,
    P9_TCREATE = 114,
    P9_RCREATE,
    P9_TREAD = 116,
    P9_RREAD,
    P9_TWRITE = 118,
    P9_RWRITE,
    P9_TCLUNK = 120,
    P9_RCLUNK,
    P9_TREMOVE = 122,
    P9_RREMOVE,
    P9_TSTAT = 124,
    P9_RSTAT,
    P9_TWSTAT = 126,
    P9_RWSTAT,
};


/* qid.types */
enum {
    P9_QTDIR = 0x80,
    P9_QTAPPEND = 0x40,
    P9_QTEXCL = 0x20,
    P9_QTMOUNT = 0x10,
    P9_QTAUTH = 0x08,
    P9_QTTMP = 0x04,
    P9_QTSYMLINK = 0x02,
    P9_QTLINK = 0x01,
    P9_QTFILE = 0x00,
};

enum p9_proto_version {
    V9FS_PROTO_2000U = 0x01,
    V9FS_PROTO_2000L = 0x02,
};

#define P9_NOTAG    (u16)(~0)
#define P9_NOFID    (u32)(~0)
#define P9_MAXWELEM 16

/*
 * ample room for Twrite/Rread header
 * size[4] Tread/Twrite tag[2] fid[4] offset[8] count[4]
 */
#define P9_IOHDRSZ 24

typedef struct V9fsPDU V9fsPDU;

struct V9fsPDU
{
    uint32_t size;
    uint16_t tag;
    uint8_t id;
    VirtQueueElement elem;
    QLIST_ENTRY(V9fsPDU) next;
};


/* FIXME
 * 1) change user needs to set groups and stuff
 */

/* from Linux's linux/virtio_9p.h */

/* The ID for virtio console */
#define VIRTIO_ID_9P    9
#define MAX_REQ         128
#define MAX_TAG_LEN     32

#define BUG_ON(cond) assert(!(cond))

typedef struct V9fsFidState V9fsFidState;

typedef struct V9fsString
{
    int16_t size;
    char *data;
} V9fsString;

typedef struct V9fsQID
{
    int8_t type;
    int32_t version;
    int64_t path;
} V9fsQID;

typedef struct V9fsStat
{
    int16_t size;
    int16_t type;
    int32_t dev;
    V9fsQID qid;
    int32_t mode;
    int32_t atime;
    int32_t mtime;
    int64_t length;
    V9fsString name;
    V9fsString uid;
    V9fsString gid;
    V9fsString muid;
    /* 9p2000.u */
    V9fsString extension;
   int32_t n_uid;
    int32_t n_gid;
    int32_t n_muid;
} V9fsStat;

enum {
    P9_FID_NONE = 0,
    P9_FID_FILE,
    P9_FID_DIR,
    P9_FID_XATTR,
};

typedef struct V9fsXattr
{
    int64_t copied_len;
    int64_t len;
    void *value;
    V9fsString name;
    int flags;
} V9fsXattr;

struct V9fsFidState
{
    int fid_type;
    int32_t fid;
    V9fsString path;
    union {
	int fd;
	DIR *dir;
	V9fsXattr xattr;
    } fs;
    uid_t uid;
    V9fsFidState *next;
};

typedef struct V9fsState
{
    VirtIODevice vdev;
    VirtQueue *vq;
    V9fsPDU pdus[MAX_REQ];
    QLIST_HEAD(, V9fsPDU) free_list;
    V9fsFidState *fid_list;
    FileOperations *ops;
    FsContext ctx;
    uint16_t tag_len;
    uint8_t *tag;
    size_t config_size;
    enum p9_proto_version proto_version;
    int32_t msize;
} V9fsState;

typedef struct V9fsCreateState {
    V9fsPDU *pdu;
    size_t offset;
    V9fsFidState *fidp;
    V9fsQID qid;
    int32_t perm;
    int8_t mode;
    struct stat stbuf;
    V9fsString name;
    V9fsString extension;
    V9fsString fullname;
    int iounit;
} V9fsCreateState;

typedef struct V9fsLcreateState {
    V9fsPDU *pdu;
    size_t offset;
    V9fsFidState *fidp;
    V9fsQID qid;
    int32_t iounit;
    struct stat stbuf;
    V9fsString name;
    V9fsString fullname;
} V9fsLcreateState;

typedef struct V9fsStatState {
    V9fsPDU *pdu;
    size_t offset;
    V9fsStat v9stat;
    V9fsFidState *fidp;
    struct stat stbuf;
} V9fsStatState;

typedef struct V9fsStatDotl {
    uint64_t st_result_mask;
    V9fsQID qid;
    uint32_t st_mode;
    uint32_t st_uid;
    uint32_t st_gid;
    uint64_t st_nlink;
    uint64_t st_rdev;
    uint64_t st_size;
    uint64_t st_blksize;
    uint64_t st_blocks;
    uint64_t st_atime_sec;
    uint64_t st_atime_nsec;
    uint64_t st_mtime_sec;
    uint64_t st_mtime_nsec;
    uint64_t st_ctime_sec;
    uint64_t st_ctime_nsec;
    uint64_t st_btime_sec;
    uint64_t st_btime_nsec;
    uint64_t st_gen;
    uint64_t st_data_version;
} V9fsStatDotl;

typedef struct V9fsStatStateDotl {
    V9fsPDU *pdu;
    size_t offset;
    V9fsStatDotl v9stat_dotl;
    struct stat stbuf;
} V9fsStatStateDotl;


typedef struct V9fsWalkState {
    V9fsPDU *pdu;
    size_t offset;
    int16_t nwnames;
    int name_idx;
    V9fsQID *qids;
    V9fsFidState *fidp;
    V9fsFidState *newfidp;
    V9fsString path;
    V9fsString *wnames;
    struct stat stbuf;
} V9fsWalkState;

typedef struct V9fsOpenState {
    V9fsPDU *pdu;
    size_t offset;
    int32_t mode;
    V9fsFidState *fidp;
    V9fsQID qid;
    struct stat stbuf;
    int iounit;
} V9fsOpenState;

typedef struct V9fsReadState {
    V9fsPDU *pdu;
    size_t offset;
    int32_t count;
    int32_t total;
    int64_t off;
    V9fsFidState *fidp;
    struct iovec iov[128]; /* FIXME: bad, bad, bad */
    struct iovec *sg;
    off_t dir_pos;
    struct dirent *dent;
    struct stat stbuf;
    V9fsString name;
    V9fsStat v9stat;
    int32_t len;
    int32_t cnt;
    int32_t max_count;
} V9fsReadState;

typedef struct V9fsWriteState {
    V9fsPDU *pdu;
    size_t offset;
    int32_t len;
    int32_t count;
    int32_t total;
    int64_t off;
    V9fsFidState *fidp;
    struct iovec iov[128]; /* FIXME: bad, bad, bad */
    struct iovec *sg;
    int cnt;
} V9fsWriteState;

typedef struct V9fsRemoveState {
    V9fsPDU *pdu;
    size_t offset;
    V9fsFidState *fidp;
} V9fsRemoveState;

typedef struct V9fsWstatState
{
    V9fsPDU *pdu;
    size_t offset;
    int16_t unused;
    V9fsStat v9stat;
    V9fsFidState *fidp;
    struct stat stbuf;
} V9fsWstatState;

typedef struct V9fsSymlinkState
{
    V9fsPDU *pdu;
    size_t offset;
    V9fsString name;
    V9fsString symname;
    V9fsString fullname;
    V9fsFidState *dfidp;
    V9fsQID qid;
    struct stat stbuf;
} V9fsSymlinkState;

typedef struct V9fsIattr
{
    int32_t valid;
    int32_t mode;
    int32_t uid;
    int32_t gid;
    int64_t size;
    int64_t atime_sec;
    int64_t atime_nsec;
    int64_t mtime_sec;
    int64_t mtime_nsec;
} V9fsIattr;

typedef struct V9fsSetattrState
{
    V9fsPDU *pdu;
    size_t offset;
    V9fsIattr v9iattr;
    V9fsFidState *fidp;
} V9fsSetattrState;

struct virtio_9p_config
{
    /* number of characters in tag */
    uint16_t tag_len;
    /* Variable size tag name */
    uint8_t tag[0];
} __attribute__((packed));

typedef struct V9fsStatfs
{
    uint32_t f_type;
    uint32_t f_bsize;
    uint64_t f_blocks;
    uint64_t f_bfree;
    uint64_t f_bavail;
    uint64_t f_files;
    uint64_t f_ffree;
    uint64_t fsid_val;
    uint32_t f_namelen;
} V9fsStatfs;

typedef struct V9fsStatfsState {
    V9fsPDU *pdu;
    size_t offset;
    int32_t fid;
    V9fsStatfs v9statfs;
    V9fsFidState *fidp;
    struct statfs stbuf;
} V9fsStatfsState;

typedef struct V9fsMkState {
    V9fsPDU *pdu;
    size_t offset;
    V9fsQID qid;
    struct stat stbuf;
    V9fsString name;
    V9fsString fullname;
} V9fsMkState;

typedef struct V9fsRenameState {
    V9fsPDU *pdu;
    V9fsFidState *fidp;
    size_t offset;
    int32_t newdirfid;
    V9fsString name;
} V9fsRenameState;

typedef struct V9fsXattrState
{
    V9fsPDU *pdu;
    size_t offset;
    V9fsFidState *file_fidp;
    V9fsFidState *xattr_fidp;
    V9fsString name;
    int64_t size;
    int flags;
    void *value;
} V9fsXattrState;

extern size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count,
                            size_t offset, size_t size, int pack);

static inline size_t do_pdu_unpack(void *dst, struct iovec *sg, int sg_count,
                        size_t offset, size_t size)
{
    return pdu_packunpack(dst, sg, sg_count, offset, size, 0);
}

#endif
Commit	Line	Data
9f107513 AL	1	#ifndef _QEMU_VIRTIO_9P_H
	2	#define _QEMU_VIRTIO_9P_H
	3
	4	#include <sys/types.h>
	5	#include <dirent.h>
	6	#include <sys/time.h>
	7	#include <utime.h>
	8
	9	#include "file-op-9p.h"
	10
	11	/* The feature bitmap for virtio 9P */
	12	/* The mount point is specified in a config variable */
	13	#define VIRTIO_9P_MOUNT_TAG 0
	14
	15	enum {
be940c87 MK	16	P9_TSTATFS = 8,
be940c87 MK	17	P9_RSTATFS,
771e9d4c MK	18	P9_TLOPEN = 12,
771e9d4c MK	19	P9_RLOPEN,
c1568af5 VJ	20	P9_TLCREATE = 14,
c1568af5 VJ	21	P9_RLCREATE,
08c60fc9 VJ	22	P9_TSYMLINK = 16,
08c60fc9 VJ	23	P9_RSYMLINK,
5268cecc MK	24	P9_TMKNOD = 18,
5268cecc MK	25	P9_RMKNOD,
c7b4b0b3 MK	26	P9_TRENAME = 20,
c7b4b0b3 MK	27	P9_RRENAME,
00ede4c2 SK	28	P9_TGETATTR = 24,
00ede4c2 SK	29	P9_RGETATTR,
c79ce737 SK	30	P9_TSETATTR = 26,
c79ce737 SK	31	P9_RSETATTR,
fa32ef88 AK	32	P9_TXATTRWALK = 30,
fa32ef88 AK	33	P9_RXATTRWALK,
10b468bd AK	34	P9_TXATTRCREATE = 32,
10b468bd AK	35	P9_RXATTRCREATE,
c18e2f94 SK	36	P9_TREADDIR = 40,
c18e2f94 SK	37	P9_RREADDIR,
b2c224be VJ	38	P9_TLINK = 70,
b2c224be VJ	39	P9_RLINK,
b67592ea MK	40	P9_TMKDIR = 72,
b67592ea MK	41	P9_RMKDIR,
9f107513 AL	42	P9_TVERSION = 100,
	43	P9_RVERSION,
	44	P9_TAUTH = 102,
	45	P9_RAUTH,
	46	P9_TATTACH = 104,
	47	P9_RATTACH,
	48	P9_TERROR = 106,
	49	P9_RERROR,
	50	P9_TFLUSH = 108,
	51	P9_RFLUSH,
	52	P9_TWALK = 110,
	53	P9_RWALK,
	54	P9_TOPEN = 112,
	55	P9_ROPEN,
	56	P9_TCREATE = 114,
	57	P9_RCREATE,
	58	P9_TREAD = 116,
	59	P9_RREAD,
	60	P9_TWRITE = 118,
	61	P9_RWRITE,
	62	P9_TCLUNK = 120,
	63	P9_RCLUNK,
	64	P9_TREMOVE = 122,
	65	P9_RREMOVE,
	66	P9_TSTAT = 124,
	67	P9_RSTAT,
	68	P9_TWSTAT = 126,
	69	P9_RWSTAT,
	70	};
	71
	72
	73	/* qid.types */
	74	enum {
	75	P9_QTDIR = 0x80,
	76	P9_QTAPPEND = 0x40,
	77	P9_QTEXCL = 0x20,
	78	P9_QTMOUNT = 0x10,
	79	P9_QTAUTH = 0x08,
	80	P9_QTTMP = 0x04,
	81	P9_QTSYMLINK = 0x02,
	82	P9_QTLINK = 0x01,
	83	P9_QTFILE = 0x00,
	84	};
	85
84151514 MK	86	enum p9_proto_version {
	87	V9FS_PROTO_2000U = 0x01,
	88	V9FS_PROTO_2000L = 0x02,
	89	};
	90
9f107513 AL	91	#define P9_NOTAG (u16)(~0)
	92	#define P9_NOFID (u32)(~0)
	93	#define P9_MAXWELEM 16
	94
5e94c103 MK	95	/*
	96	* ample room for Twrite/Rread header
	97	* size[4] Tread/Twrite tag[2] fid[4] offset[8] count[4]
	98	*/
	99	#define P9_IOHDRSZ 24
	100
9f107513 AL	101	typedef struct V9fsPDU V9fsPDU;
	102
	103	struct V9fsPDU
	104	{
	105	uint32_t size;
	106	uint16_t tag;
	107	uint8_t id;
	108	VirtQueueElement elem;
	109	QLIST_ENTRY(V9fsPDU) next;
	110	};
	111
	112
	113	/* FIXME
	114	* 1) change user needs to set groups and stuff
	115	*/
	116
	117	/* from Linux's linux/virtio_9p.h */
	118
	119	/* The ID for virtio console */
	120	#define VIRTIO_ID_9P 9
	121	#define MAX_REQ 128
	122	#define MAX_TAG_LEN 32
	123
	124	#define BUG_ON(cond) assert(!(cond))
	125
	126	typedef struct V9fsFidState V9fsFidState;
	127
	128	typedef struct V9fsString
	129	{
	130	int16_t size;
	131	char *data;
	132	} V9fsString;
	133
	134	typedef struct V9fsQID
	135	{
	136	int8_t type;
	137	int32_t version;
	138	int64_t path;
	139	} V9fsQID;
	140
	141	typedef struct V9fsStat
	142	{
	143	int16_t size;
	144	int16_t type;
	145	int32_t dev;
	146	V9fsQID qid;
	147	int32_t mode;
	148	int32_t atime;
	149	int32_t mtime;
	150	int64_t length;
	151	V9fsString name;
	152	V9fsString uid;
	153	V9fsString gid;
	154	V9fsString muid;
	155	/* 9p2000.u */
	156	V9fsString extension;
	157	int32_t n_uid;
	158	int32_t n_gid;
	159	int32_t n_muid;
	160	} V9fsStat;
	161
d62dbb51 AK	162	enum {
	163	P9_FID_NONE = 0,
	164	P9_FID_FILE,
	165	P9_FID_DIR,
	166	P9_FID_XATTR,
	167	};
	168
	169	typedef struct V9fsXattr
	170	{
	171	int64_t copied_len;
	172	int64_t len;
	173	void *value;
	174	V9fsString name;
	175	int flags;
	176	} V9fsXattr;
	177
9f107513 AL	178	struct V9fsFidState
9f107513 AL	179	{
d62dbb51	180	int fid_type;
9f107513 AL	181	int32_t fid;
9f107513 AL	182	V9fsString path;
d62dbb51 AK	183	union {
	184	int fd;
	185	DIR *dir;
	186	V9fsXattr xattr;
	187	} fs;
9f107513 AL	188	uid_t uid;
	189	V9fsFidState *next;
	190	};
	191
	192	typedef struct V9fsState
	193	{
	194	VirtIODevice vdev;
	195	VirtQueue *vq;
	196	V9fsPDU pdus[MAX_REQ];
	197	QLIST_HEAD(, V9fsPDU) free_list;
	198	V9fsFidState *fid_list;
	199	FileOperations *ops;
	200	FsContext ctx;
	201	uint16_t tag_len;
	202	uint8_t *tag;
	203	size_t config_size;
84151514	204	enum p9_proto_version proto_version;
5e94c103	205	int32_t msize;
9f107513 AL	206	} V9fsState;
9f107513 AL	207
fac4f111 VJ	208	typedef struct V9fsCreateState {
	209	V9fsPDU *pdu;
	210	size_t offset;
	211	V9fsFidState *fidp;
	212	V9fsQID qid;
	213	int32_t perm;
	214	int8_t mode;
	215	struct stat stbuf;
	216	V9fsString name;
	217	V9fsString extension;
	218	V9fsString fullname;
5e94c103	219	int iounit;
fac4f111 VJ	220	} V9fsCreateState;
fac4f111 VJ	221
c1568af5 VJ	222	typedef struct V9fsLcreateState {
	223	V9fsPDU *pdu;
	224	size_t offset;
	225	V9fsFidState *fidp;
	226	V9fsQID qid;
	227	int32_t iounit;
	228	struct stat stbuf;
	229	V9fsString name;
	230	V9fsString fullname;
	231	} V9fsLcreateState;
	232
fac4f111 VJ	233	typedef struct V9fsStatState {
	234	V9fsPDU *pdu;
	235	size_t offset;
	236	V9fsStat v9stat;
	237	V9fsFidState *fidp;
	238	struct stat stbuf;
	239	} V9fsStatState;
	240
00ede4c2 SK	241	typedef struct V9fsStatDotl {
	242	uint64_t st_result_mask;
	243	V9fsQID qid;
	244	uint32_t st_mode;
	245	uint32_t st_uid;
	246	uint32_t st_gid;
	247	uint64_t st_nlink;
	248	uint64_t st_rdev;
	249	uint64_t st_size;
	250	uint64_t st_blksize;
	251	uint64_t st_blocks;
	252	uint64_t st_atime_sec;
	253	uint64_t st_atime_nsec;
	254	uint64_t st_mtime_sec;
	255	uint64_t st_mtime_nsec;
	256	uint64_t st_ctime_sec;
	257	uint64_t st_ctime_nsec;
	258	uint64_t st_btime_sec;
	259	uint64_t st_btime_nsec;
	260	uint64_t st_gen;
	261	uint64_t st_data_version;
	262	} V9fsStatDotl;
	263
	264	typedef struct V9fsStatStateDotl {
	265	V9fsPDU *pdu;
	266	size_t offset;
	267	V9fsStatDotl v9stat_dotl;
	268	struct stat stbuf;
	269	} V9fsStatStateDotl;
	270
	271
fac4f111 VJ	272	typedef struct V9fsWalkState {
	273	V9fsPDU *pdu;
	274	size_t offset;
	275	int16_t nwnames;
	276	int name_idx;
	277	V9fsQID *qids;
	278	V9fsFidState *fidp;
	279	V9fsFidState *newfidp;
	280	V9fsString path;
	281	V9fsString *wnames;
	282	struct stat stbuf;
	283	} V9fsWalkState;
	284
	285	typedef struct V9fsOpenState {
	286	V9fsPDU *pdu;
	287	size_t offset;
771e9d4c	288	int32_t mode;
fac4f111 VJ	289	V9fsFidState *fidp;
	290	V9fsQID qid;
	291	struct stat stbuf;
5e94c103	292	int iounit;
fac4f111 VJ	293	} V9fsOpenState;
	294
	295	typedef struct V9fsReadState {
	296	V9fsPDU *pdu;
	297	size_t offset;
	298	int32_t count;
	299	int32_t total;
	300	int64_t off;
	301	V9fsFidState *fidp;
	302	struct iovec iov[128]; /* FIXME: bad, bad, bad */
	303	struct iovec *sg;
	304	off_t dir_pos;
	305	struct dirent *dent;
	306	struct stat stbuf;
	307	V9fsString name;
	308	V9fsStat v9stat;
	309	int32_t len;
	310	int32_t cnt;
	311	int32_t max_count;
	312	} V9fsReadState;
	313
	314	typedef struct V9fsWriteState {
	315	V9fsPDU *pdu;
	316	size_t offset;
	317	int32_t len;
	318	int32_t count;
	319	int32_t total;
	320	int64_t off;
	321	V9fsFidState *fidp;
	322	struct iovec iov[128]; /* FIXME: bad, bad, bad */
	323	struct iovec *sg;
	324	int cnt;
	325	} V9fsWriteState;
	326
	327	typedef struct V9fsRemoveState {
	328	V9fsPDU *pdu;
	329	size_t offset;
	330	V9fsFidState *fidp;
	331	} V9fsRemoveState;
	332
	333	typedef struct V9fsWstatState
	334	{
	335	V9fsPDU *pdu;
	336	size_t offset;
	337	int16_t unused;
	338	V9fsStat v9stat;
	339	V9fsFidState *fidp;
	340	struct stat stbuf;
fac4f111 VJ	341	} V9fsWstatState;
fac4f111 VJ	342
08c60fc9 VJ	343	typedef struct V9fsSymlinkState
	344	{
	345	V9fsPDU *pdu;
	346	size_t offset;
	347	V9fsString name;
	348	V9fsString symname;
	349	V9fsString fullname;
	350	V9fsFidState *dfidp;
	351	V9fsQID qid;
	352	struct stat stbuf;
	353	} V9fsSymlinkState;
	354
c79ce737 SK	355	typedef struct V9fsIattr
	356	{
	357	int32_t valid;
	358	int32_t mode;
	359	int32_t uid;
	360	int32_t gid;
	361	int64_t size;
	362	int64_t atime_sec;
	363	int64_t atime_nsec;
	364	int64_t mtime_sec;
	365	int64_t mtime_nsec;
	366	} V9fsIattr;
	367
	368	typedef struct V9fsSetattrState
	369	{
	370	V9fsPDU *pdu;
	371	size_t offset;
	372	V9fsIattr v9iattr;
	373	V9fsFidState *fidp;
	374	} V9fsSetattrState;
	375
9f107513 AL	376	struct virtio_9p_config
	377	{
	378	/* number of characters in tag */
	379	uint16_t tag_len;
	380	/* Variable size tag name */
	381	uint8_t tag[0];
	382	} __attribute__((packed));
	383
be940c87 MK	384	typedef struct V9fsStatfs
	385	{
	386	uint32_t f_type;
	387	uint32_t f_bsize;
	388	uint64_t f_blocks;
	389	uint64_t f_bfree;
	390	uint64_t f_bavail;
	391	uint64_t f_files;
	392	uint64_t f_ffree;
	393	uint64_t fsid_val;
	394	uint32_t f_namelen;
	395	} V9fsStatfs;
	396
	397	typedef struct V9fsStatfsState {
	398	V9fsPDU *pdu;
	399	size_t offset;
	400	int32_t fid;
	401	V9fsStatfs v9statfs;
	402	V9fsFidState *fidp;
	403	struct statfs stbuf;
	404	} V9fsStatfsState;
	405
5268cecc MK	406	typedef struct V9fsMkState {
	407	V9fsPDU *pdu;
	408	size_t offset;
	409	V9fsQID qid;
	410	struct stat stbuf;
	411	V9fsString name;
	412	V9fsString fullname;
	413	} V9fsMkState;
	414
c7b4b0b3 MK	415	typedef struct V9fsRenameState {
	416	V9fsPDU *pdu;
	417	V9fsFidState *fidp;
	418	size_t offset;
	419	int32_t newdirfid;
	420	V9fsString name;
	421	} V9fsRenameState;
	422
fa32ef88 AK	423	typedef struct V9fsXattrState
	424	{
	425	V9fsPDU *pdu;
	426	size_t offset;
	427	V9fsFidState *file_fidp;
	428	V9fsFidState *xattr_fidp;
	429	V9fsString name;
	430	int64_t size;
	431	int flags;
	432	void *value;
	433	} V9fsXattrState;
	434
9f107513 AL	435	extern size_t pdu_packunpack(void addr, struct iovec sg, int sg_count,
	436	size_t offset, size_t size, int pack);
	437
	438	static inline size_t do_pdu_unpack(void dst, struct iovec sg, int sg_count,
	439	size_t offset, size_t size)
	440	{
	441	return pdu_packunpack(dst, sg, sg_count, offset, size, 0);
	442	}
	443
	444	#endif