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#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_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_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;
#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 V9fsLockState
{
V9fsPDU *pdu;
size_t offset;
int8_t status;
struct stat stbuf;
V9fsFidState *fidp;
V9fsFlock *flock;
} V9fsLockState;
typedef struct V9fsGetlock
{
uint8_t type;
uint64_t start; /* absolute offset */
uint64_t length;
uint32_t proc_id;
V9fsString client_id;
} V9fsGetlock;
typedef struct V9fsGetlockState
{
V9fsPDU *pdu;
size_t offset;
struct stat stbuf;
V9fsFidState *fidp;
V9fsGetlock *glock;
} V9fsGetlockState;
typedef struct V9fsReadLinkState
{
V9fsPDU *pdu;
size_t offset;
V9fsString target;
} V9fsReadLinkState;
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
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