[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_TGETATTR = 24,
    P9_RGETATTR,
    P9_TREADDIR = 40,
    P9_RREADDIR,
    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 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;

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