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-rw-r--r--hw/9pfs/virtio-9p.h507
1 files changed, 507 insertions, 0 deletions
diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h
new file mode 100644
index 0000000000..622928fce5
--- /dev/null
+++ b/hw/9pfs/virtio-9p.h
@@ -0,0 +1,507 @@
+#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 "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
+
+/*
+ * 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;
+ uint16_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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