mirror of https://gitee.com/openkylin/qemu.git
384 lines
7.3 KiB
C
384 lines
7.3 KiB
C
#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"
|
|
|
|
/* 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
|
|
|
|
#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;
|
|
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;
|
|
|
|
struct V9fsFidState
|
|
{
|
|
int fid_type;
|
|
int32_t fid;
|
|
V9fsString path;
|
|
union {
|
|
int fd;
|
|
DIR *dir;
|
|
V9fsXattr xattr;
|
|
} fs;
|
|
union {
|
|
int fd;
|
|
DIR *dir;
|
|
} 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;
|
|
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 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;
|
|
|
|
#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);
|
|
}
|
|
|
|
extern void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq);
|
|
extern void virtio_9p_set_fd_limit(void);
|
|
extern void v9fs_reclaim_fd(V9fsState *s);
|
|
#endif
|