[qemu.git] / hw / 9pfs / 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 <sys/resource.h>
#include "hw/virtio.h"
#include "fsdev/file-op-9p.h"
#include "qemu-thread.h"
#include "qemu-coroutine.h"

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

enum {
    P9_TLERROR = 6,
    P9_RLERROR,
    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_TREADLINK = 22,
    P9_RREADLINK,
    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_TFSYNC = 50,
    P9_RFSYNC,
    P9_TLOCK = 52,
    P9_RLOCK,
    P9_TGETLOCK = 54,
    P9_RGETLOCK,
    P9_TLINK = 70,
    P9_RLINK,
    P9_TMKDIR = 72,
    P9_RMKDIR,
    P9_TRENAMEAT = 74,
    P9_RRENAMEAT,
    P9_TUNLINKAT = 76,
    P9_RUNLINKAT,
    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

#define FID_REFERENCED          0x1
#define FID_NON_RECLAIMABLE     0x2
static inline const char *rpath(FsContext *ctx, const char *path, char *buffer)
{
    snprintf(buffer, PATH_MAX, "%s/%s", ctx->fs_root, path);
    return buffer;
}

/*
 * 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 V9fsState;

struct V9fsPDU
{
    uint32_t size;
    uint16_t tag;
    uint8_t id;
    uint8_t cancelled;
    CoQueue complete;
    VirtQueueElement elem;
    struct V9fsState *s;
    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;

/*
 * Filled by fs driver on open and other
 * calls.
 */
union V9fsFidOpenState {
    int fd;
    DIR *dir;
    V9fsXattr xattr;
};

struct V9fsFidState
{
    int fid_type;
    int32_t fid;
    V9fsPath path;
    V9fsFidOpenState fs;
    V9fsFidOpenState fs_reclaim;
    int flags;
    int open_flags;
    uid_t uid;
    int ref;
    int clunked;
    V9fsFidState *next;
    V9fsFidState *rclm_lst;
};

typedef struct V9fsState
{
    VirtIODevice vdev;
    VirtQueue *vq;
    V9fsPDU pdus[MAX_REQ];
    QLIST_HEAD(, V9fsPDU) free_list;
    QLIST_HEAD(, V9fsPDU) active_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;
    /*
     * lock ensuring atomic path update
     * on rename.
     */
    CoRwlock rename_lock;
} V9fsState;

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 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 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;

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

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

/* 9p2000.L open flags */
#define P9_DOTL_RDONLY        00000000
#define P9_DOTL_WRONLY        00000001
#define P9_DOTL_RDWR          00000002
#define P9_DOTL_NOACCESS      00000003
#define P9_DOTL_CREATE        00000100
#define P9_DOTL_EXCL          00000200
#define P9_DOTL_NOCTTY        00000400
#define P9_DOTL_TRUNC         00001000
#define P9_DOTL_APPEND        00002000
#define P9_DOTL_NONBLOCK      00004000
#define P9_DOTL_DSYNC         00010000
#define P9_DOTL_FASYNC        00020000
#define P9_DOTL_DIRECT        00040000
#define P9_DOTL_LARGEFILE     00100000
#define P9_DOTL_DIRECTORY     00200000
#define P9_DOTL_NOFOLLOW      00400000
#define P9_DOTL_NOATIME       01000000
#define P9_DOTL_CLOEXEC       02000000
#define P9_DOTL_SYNC          04000000

/* 9p2000.L at flags */
#define P9_DOTL_AT_REMOVEDIR         0x200

/* 9P2000.L lock type */
#define P9_LOCK_TYPE_RDLCK 0
#define P9_LOCK_TYPE_WRLCK 1
#define P9_LOCK_TYPE_UNLCK 2

#define P9_LOCK_SUCCESS 0
#define P9_LOCK_BLOCKED 1
#define P9_LOCK_ERROR 2
#define P9_LOCK_GRACE 3

#define P9_LOCK_FLAGS_BLOCK 1
#define P9_LOCK_FLAGS_RECLAIM 2

typedef struct V9fsFlock
{
    uint8_t type;
    uint32_t flags;
    uint64_t start; /* absolute offset */
    uint64_t length;
    uint32_t proc_id;
    V9fsString client_id;
} V9fsFlock;

typedef struct V9fsGetlock
{
    uint8_t type;
    uint64_t start; /* absolute offset */
    uint64_t length;
    uint32_t proc_id;
    V9fsString client_id;
} V9fsGetlock;

extern int open_fd_hw;
extern int total_open_fd;

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);
}

static inline void v9fs_path_write_lock(V9fsState *s)
{
    if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
        qemu_co_rwlock_wrlock(&s->rename_lock);
    }
}

static inline void v9fs_path_read_lock(V9fsState *s)
{
    if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
        qemu_co_rwlock_rdlock(&s->rename_lock);
    }
}

static inline void v9fs_path_unlock(V9fsState *s)
{
    if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
        qemu_co_rwlock_unlock(&s->rename_lock);
    }
}

static inline uint8_t v9fs_request_cancelled(V9fsPDU *pdu)
{
    return pdu->cancelled;
}

extern void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq);
extern void virtio_9p_set_fd_limit(void);
extern void v9fs_reclaim_fd(V9fsPDU *pdu);
extern void v9fs_string_init(V9fsString *str);
extern void v9fs_string_free(V9fsString *str);
extern void v9fs_string_null(V9fsString *str);
extern void v9fs_string_sprintf(V9fsString *str, const char *fmt, ...);
extern void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs);
extern void v9fs_path_init(V9fsPath *path);
extern void v9fs_path_free(V9fsPath *path);
extern void v9fs_path_copy(V9fsPath *lhs, V9fsPath *rhs);
extern int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath,
                             const char *name, V9fsPath *path);
#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>
7a462745	8	#include <sys/resource.h>
ff06030f	9	#include "hw/virtio.h"
353ac78d	10	#include "fsdev/file-op-9p.h"
02cb7f3a AK	11	#include "qemu-thread.h"
02cb7f3a AK	12	#include "qemu-coroutine.h"
9f107513 AL	13
	14	/* The feature bitmap for virtio 9P */
	15	/* The mount point is specified in a config variable */
	16	#define VIRTIO_9P_MOUNT_TAG 0
	17
	18	enum {
8f4d1ca5 AB	19	P9_TLERROR = 6,
8f4d1ca5 AB	20	P9_RLERROR,
be940c87 MK	21	P9_TSTATFS = 8,
be940c87 MK	22	P9_RSTATFS,
771e9d4c MK	23	P9_TLOPEN = 12,
771e9d4c MK	24	P9_RLOPEN,
c1568af5 VJJ	25	P9_TLCREATE = 14,
c1568af5 VJJ	26	P9_RLCREATE,
08c60fc9 VJJ	27	P9_TSYMLINK = 16,
08c60fc9 VJJ	28	P9_RSYMLINK,
5268cecc MK	29	P9_TMKNOD = 18,
5268cecc MK	30	P9_RMKNOD,
c7b4b0b3 MK	31	P9_TRENAME = 20,
c7b4b0b3 MK	32	P9_RRENAME,
df0973a4 MK	33	P9_TREADLINK = 22,
df0973a4 MK	34	P9_RREADLINK,
00ede4c2 SK	35	P9_TGETATTR = 24,
00ede4c2 SK	36	P9_RGETATTR,
c79ce737 SK	37	P9_TSETATTR = 26,
c79ce737 SK	38	P9_RSETATTR,
fa32ef88 AK	39	P9_TXATTRWALK = 30,
fa32ef88 AK	40	P9_RXATTRWALK,
10b468bd AK	41	P9_TXATTRCREATE = 32,
10b468bd AK	42	P9_RXATTRCREATE,
c18e2f94 SK	43	P9_TREADDIR = 40,
c18e2f94 SK	44	P9_RREADDIR,
b41e95d3 VJJ	45	P9_TFSYNC = 50,
b41e95d3 VJJ	46	P9_RFSYNC,
82cc3ee8 MK	47	P9_TLOCK = 52,
82cc3ee8 MK	48	P9_RLOCK,
8f354003 MK	49	P9_TGETLOCK = 54,
8f354003 MK	50	P9_RGETLOCK,
b2c224be VJJ	51	P9_TLINK = 70,
b2c224be VJJ	52	P9_RLINK,
b67592ea MK	53	P9_TMKDIR = 72,
b67592ea MK	54	P9_RMKDIR,
89bf6593 AK	55	P9_TRENAMEAT = 74,
89bf6593 AK	56	P9_RRENAMEAT,
7834cf77 AK	57	P9_TUNLINKAT = 76,
7834cf77 AK	58	P9_RUNLINKAT,
9f107513 AL	59	P9_TVERSION = 100,
	60	P9_RVERSION,
	61	P9_TAUTH = 102,
	62	P9_RAUTH,
	63	P9_TATTACH = 104,
	64	P9_RATTACH,
	65	P9_TERROR = 106,
	66	P9_RERROR,
	67	P9_TFLUSH = 108,
	68	P9_RFLUSH,
	69	P9_TWALK = 110,
	70	P9_RWALK,
	71	P9_TOPEN = 112,
	72	P9_ROPEN,
	73	P9_TCREATE = 114,
	74	P9_RCREATE,
	75	P9_TREAD = 116,
	76	P9_RREAD,
	77	P9_TWRITE = 118,
	78	P9_RWRITE,
	79	P9_TCLUNK = 120,
	80	P9_RCLUNK,
	81	P9_TREMOVE = 122,
	82	P9_RREMOVE,
	83	P9_TSTAT = 124,
	84	P9_RSTAT,
	85	P9_TWSTAT = 126,
	86	P9_RWSTAT,
	87	};
	88
	89
	90	/* qid.types */
	91	enum {
	92	P9_QTDIR = 0x80,
	93	P9_QTAPPEND = 0x40,
	94	P9_QTEXCL = 0x20,
	95	P9_QTMOUNT = 0x10,
	96	P9_QTAUTH = 0x08,
	97	P9_QTTMP = 0x04,
	98	P9_QTSYMLINK = 0x02,
	99	P9_QTLINK = 0x01,
	100	P9_QTFILE = 0x00,
	101	};
	102
84151514 MK	103	enum p9_proto_version {
	104	V9FS_PROTO_2000U = 0x01,
	105	V9FS_PROTO_2000L = 0x02,
	106	};
	107
9f107513 AL	108	#define P9_NOTAG (u16)(~0)
	109	#define P9_NOFID (u32)(~0)
	110	#define P9_MAXWELEM 16
7a462745 AK	111
	112	#define FID_REFERENCED 0x1
	113	#define FID_NON_RECLAIMABLE 0x2
faa44e3d VJJ	114	static inline const char rpath(FsContext ctx, const char path, char buffer)
	115	{
	116	snprintf(buffer, PATH_MAX, "%s/%s", ctx->fs_root, path);
	117	return buffer;
	118	}
9f107513	119
5e94c103 MK	120	/*
	121	* ample room for Twrite/Rread header
	122	* size[4] Tread/Twrite tag[2] fid[4] offset[8] count[4]
	123	*/
	124	#define P9_IOHDRSZ 24
	125
9f107513	126	typedef struct V9fsPDU V9fsPDU;
ff06030f	127	struct V9fsState;
9f107513 AL	128
	129	struct V9fsPDU
	130	{
	131	uint32_t size;
	132	uint16_t tag;
	133	uint8_t id;
bccacf6c AK	134	uint8_t cancelled;
bccacf6c AK	135	CoQueue complete;
9f107513	136	VirtQueueElement elem;
ff06030f	137	struct V9fsState *s;
9f107513 AL	138	QLIST_ENTRY(V9fsPDU) next;
	139	};
	140
	141
	142	/* FIXME
	143	* 1) change user needs to set groups and stuff
	144	*/
	145
	146	/* from Linux's linux/virtio_9p.h */
	147
	148	/* The ID for virtio console */
	149	#define VIRTIO_ID_9P 9
	150	#define MAX_REQ 128
	151	#define MAX_TAG_LEN 32
	152
	153	#define BUG_ON(cond) assert(!(cond))
	154
	155	typedef struct V9fsFidState V9fsFidState;
	156
	157	typedef struct V9fsString
	158	{
	159	int16_t size;
	160	char *data;
	161	} V9fsString;
	162
	163	typedef struct V9fsQID
	164	{
	165	int8_t type;
	166	int32_t version;
	167	int64_t path;
	168	} V9fsQID;
	169
	170	typedef struct V9fsStat
	171	{
	172	int16_t size;
	173	int16_t type;
	174	int32_t dev;
	175	V9fsQID qid;
	176	int32_t mode;
	177	int32_t atime;
	178	int32_t mtime;
	179	int64_t length;
	180	V9fsString name;
	181	V9fsString uid;
	182	V9fsString gid;
	183	V9fsString muid;
	184	/* 9p2000.u */
	185	V9fsString extension;
	186	int32_t n_uid;
	187	int32_t n_gid;
	188	int32_t n_muid;
	189	} V9fsStat;
	190
d62dbb51 AK	191	enum {
	192	P9_FID_NONE = 0,
	193	P9_FID_FILE,
	194	P9_FID_DIR,
	195	P9_FID_XATTR,
	196	};
	197
	198	typedef struct V9fsXattr
	199	{
	200	int64_t copied_len;
	201	int64_t len;
	202	void *value;
	203	V9fsString name;
	204	int flags;
	205	} V9fsXattr;
	206
cc720ddb AK	207	/*
	208	* Filled by fs driver on open and other
	209	* calls.
	210	*/
	211	union V9fsFidOpenState {
	212	int fd;
	213	DIR *dir;
	214	V9fsXattr xattr;
	215	};
	216
9f107513 AL	217	struct V9fsFidState
9f107513 AL	218	{
d62dbb51	219	int fid_type;
9f107513	220	int32_t fid;
2289be19	221	V9fsPath path;
cc720ddb AK	222	V9fsFidOpenState fs;
cc720ddb AK	223	V9fsFidOpenState fs_reclaim;
7a462745 AK	224	int flags;
7a462745 AK	225	int open_flags;
9f107513	226	uid_t uid;
84dfb926 AK	227	int ref;
84dfb926 AK	228	int clunked;
9f107513	229	V9fsFidState *next;
7a462745	230	V9fsFidState *rclm_lst;
9f107513 AL	231	};
	232
	233	typedef struct V9fsState
	234	{
	235	VirtIODevice vdev;
	236	VirtQueue *vq;
	237	V9fsPDU pdus[MAX_REQ];
	238	QLIST_HEAD(, V9fsPDU) free_list;
bccacf6c	239	QLIST_HEAD(, V9fsPDU) active_list;
9f107513 AL	240	V9fsFidState *fid_list;
	241	FileOperations *ops;
	242	FsContext ctx;
	243	uint16_t tag_len;
	244	uint8_t *tag;
	245	size_t config_size;
84151514	246	enum p9_proto_version proto_version;
5e94c103	247	int32_t msize;
02cb7f3a AK	248	/*
	249	* lock ensuring atomic path update
	250	* on rename.
	251	*/
	252	CoRwlock rename_lock;
9f107513 AL	253	} V9fsState;
9f107513 AL	254
fac4f111 VJJ	255	typedef struct V9fsStatState {
	256	V9fsPDU *pdu;
	257	size_t offset;
	258	V9fsStat v9stat;
	259	V9fsFidState *fidp;
	260	struct stat stbuf;
	261	} V9fsStatState;
	262
00ede4c2 SK	263	typedef struct V9fsStatDotl {
	264	uint64_t st_result_mask;
	265	V9fsQID qid;
	266	uint32_t st_mode;
	267	uint32_t st_uid;
	268	uint32_t st_gid;
	269	uint64_t st_nlink;
	270	uint64_t st_rdev;
	271	uint64_t st_size;
	272	uint64_t st_blksize;
	273	uint64_t st_blocks;
	274	uint64_t st_atime_sec;
	275	uint64_t st_atime_nsec;
	276	uint64_t st_mtime_sec;
	277	uint64_t st_mtime_nsec;
	278	uint64_t st_ctime_sec;
	279	uint64_t st_ctime_nsec;
	280	uint64_t st_btime_sec;
	281	uint64_t st_btime_nsec;
	282	uint64_t st_gen;
	283	uint64_t st_data_version;
	284	} V9fsStatDotl;
	285
fac4f111 VJJ	286	typedef struct V9fsOpenState {
	287	V9fsPDU *pdu;
	288	size_t offset;
771e9d4c	289	int32_t mode;
fac4f111 VJJ	290	V9fsFidState *fidp;
	291	V9fsQID qid;
	292	struct stat stbuf;
5e94c103	293	int iounit;
fac4f111 VJJ	294	} V9fsOpenState;
	295
	296	typedef struct V9fsReadState {
	297	V9fsPDU *pdu;
	298	size_t offset;
	299	int32_t count;
	300	int32_t total;
	301	int64_t off;
	302	V9fsFidState *fidp;
	303	struct iovec iov[128]; /* FIXME: bad, bad, bad */
	304	struct iovec *sg;
	305	off_t dir_pos;
	306	struct dirent *dent;
	307	struct stat stbuf;
	308	V9fsString name;
	309	V9fsStat v9stat;
	310	int32_t len;
	311	int32_t cnt;
	312	int32_t max_count;
	313	} V9fsReadState;
	314
	315	typedef struct V9fsWriteState {
	316	V9fsPDU *pdu;
	317	size_t offset;
	318	int32_t len;
	319	int32_t count;
	320	int32_t total;
	321	int64_t off;
	322	V9fsFidState *fidp;
	323	struct iovec iov[128]; /* FIXME: bad, bad, bad */
	324	struct iovec *sg;
	325	int cnt;
	326	} V9fsWriteState;
	327
c79ce737 SK	328	typedef struct V9fsIattr
	329	{
	330	int32_t valid;
	331	int32_t mode;
	332	int32_t uid;
	333	int32_t gid;
	334	int64_t size;
	335	int64_t atime_sec;
	336	int64_t atime_nsec;
	337	int64_t mtime_sec;
	338	int64_t mtime_nsec;
	339	} V9fsIattr;
	340
9f107513 AL	341	struct virtio_9p_config
	342	{
	343	/* number of characters in tag */
	344	uint16_t tag_len;
	345	/* Variable size tag name */
	346	uint8_t tag[0];
541dc0d4	347	} QEMU_PACKED;
9f107513	348
5268cecc MK	349	typedef struct V9fsMkState {
	350	V9fsPDU *pdu;
	351	size_t offset;
	352	V9fsQID qid;
	353	struct stat stbuf;
	354	V9fsString name;
	355	V9fsString fullname;
	356	} V9fsMkState;
	357
9844081b MK	358	/* 9p2000.L open flags */
	359	#define P9_DOTL_RDONLY 00000000
	360	#define P9_DOTL_WRONLY 00000001
	361	#define P9_DOTL_RDWR 00000002
	362	#define P9_DOTL_NOACCESS 00000003
	363	#define P9_DOTL_CREATE 00000100
	364	#define P9_DOTL_EXCL 00000200
	365	#define P9_DOTL_NOCTTY 00000400
	366	#define P9_DOTL_TRUNC 00001000
	367	#define P9_DOTL_APPEND 00002000
	368	#define P9_DOTL_NONBLOCK 00004000
	369	#define P9_DOTL_DSYNC 00010000
	370	#define P9_DOTL_FASYNC 00020000
	371	#define P9_DOTL_DIRECT 00040000
	372	#define P9_DOTL_LARGEFILE 00100000
	373	#define P9_DOTL_DIRECTORY 00200000
	374	#define P9_DOTL_NOFOLLOW 00400000
	375	#define P9_DOTL_NOATIME 01000000
	376	#define P9_DOTL_CLOEXEC 02000000
	377	#define P9_DOTL_SYNC 04000000
	378
	379	/* 9p2000.L at flags */
	380	#define P9_DOTL_AT_REMOVEDIR 0x200
	381
ea60f315 MK	382	/* 9P2000.L lock type */
	383	#define P9_LOCK_TYPE_RDLCK 0
	384	#define P9_LOCK_TYPE_WRLCK 1
	385	#define P9_LOCK_TYPE_UNLCK 2
	386
82cc3ee8 MK	387	#define P9_LOCK_SUCCESS 0
	388	#define P9_LOCK_BLOCKED 1
	389	#define P9_LOCK_ERROR 2
	390	#define P9_LOCK_GRACE 3
	391
	392	#define P9_LOCK_FLAGS_BLOCK 1
	393	#define P9_LOCK_FLAGS_RECLAIM 2
	394
	395	typedef struct V9fsFlock
	396	{
	397	uint8_t type;
	398	uint32_t flags;
	399	uint64_t start; /* absolute offset */
	400	uint64_t length;
	401	uint32_t proc_id;
	402	V9fsString client_id;
	403	} V9fsFlock;
	404
8f354003 MK	405	typedef struct V9fsGetlock
	406	{
	407	uint8_t type;
	408	uint64_t start; /* absolute offset */
	409	uint64_t length;
	410	uint32_t proc_id;
	411	V9fsString client_id;
	412	} V9fsGetlock;
	413
7a462745 AK	414	extern int open_fd_hw;
	415	extern int total_open_fd;
	416
64b85a8f BS	417	size_t pdu_packunpack(void addr, struct iovec sg, int sg_count,
64b85a8f BS	418	size_t offset, size_t size, int pack);
9f107513 AL	419
	420	static inline size_t do_pdu_unpack(void dst, struct iovec sg, int sg_count,
	421	size_t offset, size_t size)
	422	{
	423	return pdu_packunpack(dst, sg, sg_count, offset, size, 0);
	424	}
	425
532decb7 AK	426	static inline void v9fs_path_write_lock(V9fsState *s)
532decb7 AK	427	{
c98f1d4a	428	if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
532decb7 AK	429	qemu_co_rwlock_wrlock(&s->rename_lock);
	430	}
	431	}
	432
	433	static inline void v9fs_path_read_lock(V9fsState *s)
	434	{
c98f1d4a	435	if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
532decb7 AK	436	qemu_co_rwlock_rdlock(&s->rename_lock);
	437	}
	438	}
	439
	440	static inline void v9fs_path_unlock(V9fsState *s)
	441	{
c98f1d4a	442	if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
532decb7 AK	443	qemu_co_rwlock_unlock(&s->rename_lock);
	444	}
	445	}
	446
bccacf6c AK	447	static inline uint8_t v9fs_request_cancelled(V9fsPDU *pdu)
	448	{
	449	return pdu->cancelled;
	450	}
	451
f4f61d27	452	extern void handle_9p_output(VirtIODevice vdev, VirtQueue vq);
7a462745	453	extern void virtio_9p_set_fd_limit(void);
bccacf6c	454	extern void v9fs_reclaim_fd(V9fsPDU *pdu);
70c18fc0 AK	455	extern void v9fs_string_init(V9fsString *str);
	456	extern void v9fs_string_free(V9fsString *str);
	457	extern void v9fs_string_null(V9fsString *str);
	458	extern void v9fs_string_sprintf(V9fsString str, const char fmt, ...);
	459	extern void v9fs_string_copy(V9fsString lhs, V9fsString rhs);
2289be19 AK	460	extern void v9fs_path_init(V9fsPath *path);
	461	extern void v9fs_path_free(V9fsPath *path);
	462	extern void v9fs_path_copy(V9fsPath lhs, V9fsPath rhs);
	463	extern int v9fs_name_to_path(V9fsState s, V9fsPath dirpath,
	464	const char name, V9fsPath path);
9f107513	465	#endif