[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_TLCREATE = 14,
    P9_RLCREATE,
    P9_TSYMLINK = 16,
    P9_RSYMLINK,
    P9_TGETATTR = 24,
    P9_RGETATTR,
    P9_TSETATTR = 26,
    P9_RSETATTR,
    P9_TREADDIR = 40,
    P9_RREADDIR,
    P9_TLINK = 70,
    P9_RLINK,
    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;

struct V9fsFidState
{
    int32_t fid;
    V9fsString path;
    int fd;
    DIR *dir;
    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;
    int8_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;
    V9fsString nname;
} 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;

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