1 # Copyright 2018 syzkaller project authors. All rights reserved. 2 # Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. 3 4 # 9p2000 mount/server descriptions. For protocol description see: 5 # http://knusbaum.com/useful/rfc9p2000 6 # http://ericvh.github.io/9p-rfc/rfc9p2000.html 7 # http://ericvh.github.io/9p-rfc/rfc9p2000.u.html 8 # https://github.com/chaos/diod/blob/master/protocol.md 9 10 include <linux/fs.h> 11 include <net/9p/9p.h> 12 13 resource rfd9p[fd] 14 resource wfd9p[fd] 15 16 mount$9p_fd(src const[0], dst ptr[in, filename], type ptr[in, string["9p"]], flags flags[mount_flags], opts ptr[in, p9_options_fd]) 17 mount$9p_tcp(src ptr[in, string["127.0.0.1"]], dst ptr[in, filename], type ptr[in, string["9p"]], flags flags[mount_flags], opts ptr[in, p9_options_tcp]) 18 mount$9p_unix(src ptr[in, filename], dst ptr[in, filename], type ptr[in, string["9p"]], flags flags[mount_flags], opts ptr[in, p9_options_unix]) 19 mount$9p_rdma(src ptr[in, string["127.0.0.1"]], dst ptr[in, filename], type ptr[in, string["9p"]], flags flags[mount_flags], opts ptr[in, p9_options_rdma]) 20 # TODO: src is some "virtio chan tag name". 21 mount$9p_virtio(src ptr[in, string], dst ptr[in, filename], type ptr[in, string["9p"]], flags flags[mount_flags], opts ptr[in, p9_options_virtio]) 22 # TODO: src is some "xen dev tag name". 23 mount$9p_xen(src ptr[in, string], dst ptr[in, filename], type ptr[in, string["9p"]], flags flags[mount_flags], opts ptr[in, p9_options_xen]) 24 25 pipe2$9p(pipefd ptr[out, pipe_9p], flags flags[pipe_flags]) 26 27 pipe_9p { 28 rfd rfd9p 29 wfd wfd9p 30 } 31 32 write$9p(fd wfd9p, data ptr[in, array[int8]], size bytesize[data]) 33 34 write$P9_RLERROR(fd wfd9p, data ptr[in, p9_msg[P9_RLERROR, p9_rerror]], size bytesize[data]) 35 write$P9_RLERRORu(fd wfd9p, data ptr[in, p9_msg[P9_RLERROR, p9_rerroru]], size bytesize[data]) 36 write$P9_RVERSION(fd wfd9p, data ptr[in, p9_rversion], size bytesize[data]) 37 write$P9_RAUTH(fd wfd9p, data ptr[in, p9_msg[P9_RAUTH, p9_qid]], size bytesize[data]) 38 write$P9_RFLUSH(fd wfd9p, data ptr[in, p9_msg[P9_RFLUSH, void]], size bytesize[data]) 39 write$P9_RATTACH(fd wfd9p, data ptr[in, p9_msg[P9_RATTACH, p9_qid]], size bytesize[data]) 40 write$P9_RWALK(fd wfd9p, data ptr[in, p9_msg[P9_RWALK, p9_rwalk]], size bytesize[data]) 41 write$P9_ROPEN(fd wfd9p, data ptr[in, p9_msg[P9_ROPEN, p9_ropen]], size bytesize[data]) 42 write$P9_RCREATE(fd wfd9p, data ptr[in, p9_msg[P9_RCREATE, p9_ropen]], size bytesize[data]) 43 write$P9_RREAD(fd wfd9p, data ptr[in, p9_msg[P9_RREAD, p9_rread]], size bytesize[data]) 44 write$P9_RWRITE(fd wfd9p, data ptr[in, p9_msg[P9_RWRITE, int32]], size bytesize[data]) 45 write$P9_RCLUNK(fd wfd9p, data ptr[in, p9_msg[P9_RCLUNK, void]], size bytesize[data]) 46 write$P9_RREMOVE(fd wfd9p, data ptr[in, p9_msg[P9_RREMOVE, void]], size bytesize[data]) 47 write$P9_RWSTAT(fd wfd9p, data ptr[in, p9_msg[P9_RWSTAT, void]], size bytesize[data]) 48 write$P9_RSTAT(fd wfd9p, data ptr[in, p9_msg[P9_RSTAT, p9_rstat]], size bytesize[data]) 49 write$P9_RSTATu(fd wfd9p, data ptr[in, p9_msg[P9_RSTAT, p9_rstatu]], size bytesize[data]) 50 write$P9_RSTATFS(fd wfd9p, data ptr[in, p9_msg[P9_RSTATFS, p9_rstatfs]], size bytesize[data]) 51 write$P9_RLOPEN(fd wfd9p, data ptr[in, p9_msg[P9_RLOPEN, p9_ropen]], size bytesize[data]) 52 write$P9_RLCREATE(fd wfd9p, data ptr[in, p9_msg[P9_RLCREATE, p9_ropen]], size bytesize[data]) 53 write$P9_RSYMLINK(fd wfd9p, data ptr[in, p9_msg[P9_RSYMLINK, p9_qid]], size bytesize[data]) 54 write$P9_RMKNOD(fd wfd9p, data ptr[in, p9_msg[P9_RMKNOD, p9_qid]], size bytesize[data]) 55 write$P9_RRENAME(fd wfd9p, data ptr[in, p9_msg[P9_RRENAME, void]], size bytesize[data]) 56 write$P9_RREADLINK(fd wfd9p, data ptr[in, p9_msg[P9_RREADLINK, p9_rreadlink]], size bytesize[data]) 57 write$P9_RGETATTR(fd wfd9p, data ptr[in, p9_msg[P9_RGETATTR, p9_rgetattr]], size bytesize[data]) 58 write$P9_RSETATTR(fd wfd9p, data ptr[in, p9_msg[P9_RSETATTR, void]], size bytesize[data]) 59 write$P9_RXATTRWALK(fd wfd9p, data ptr[in, p9_msg[P9_RXATTRWALK, int64]], size bytesize[data]) 60 write$P9_RXATTRCREATE(fd wfd9p, data ptr[in, p9_msg[P9_RXATTRCREATE, void]], size bytesize[data]) 61 write$P9_RREADDIR(fd wfd9p, data ptr[in, p9_msg[P9_RREADDIR, p9_rreaddir]], size bytesize[data]) 62 write$P9_RFSYNC(fd wfd9p, data ptr[in, p9_msg[P9_RFSYNC, void]], size bytesize[data]) 63 write$P9_RLOCK(fd wfd9p, data ptr[in, p9_msg[P9_RLOCK, flags[p9_lock_status, int8]]], size bytesize[data]) 64 write$P9_RGETLOCK(fd wfd9p, data ptr[in, p9_msg[P9_RGETLOCK, p9_rgetlock]], size bytesize[data]) 65 write$P9_RLINK(fd wfd9p, data ptr[in, p9_msg[P9_RLINK, void]], size bytesize[data]) 66 write$P9_RMKDIR(fd wfd9p, data ptr[in, p9_msg[P9_RMKDIR, p9_qid]], size bytesize[data]) 67 write$P9_RRENAMEAT(fd wfd9p, data ptr[in, p9_msg[P9_RRENAMEAT, void]], size bytesize[data]) 68 write$P9_RUNLINKAT(fd wfd9p, data ptr[in, p9_msg[P9_RUNLINKAT, void]], size bytesize[data]) 69 70 type p9_msg[MSG, PAYLOAD] { 71 size bytesize[parent, int32] 72 type const[MSG, int8] 73 tag int16[1:2] 74 payload PAYLOAD 75 } [packed] 76 77 p9_rerror { 78 ename_len len[ename, int16] 79 ename stringnoz 80 } [packed] 81 82 p9_rerroru { 83 error p9_rerror 84 errno int32 85 } [packed] 86 87 p9_rversion { 88 size bytesize[parent, int32] 89 type const[P9_RVERSION, int8] 90 tag const[0xffff, int16] 91 msize int32 92 version_len len[version, int16] 93 version stringnoz[p9_versions] 94 } [packed] 95 96 p9_versions = "9P2000", "9P2000.u", "9P2000.L" 97 98 p9_qid { 99 type flags[p9_qid_types, int8] 100 version int32[0:4] 101 path int64[0:8] 102 } [packed] 103 104 p9_qid_types = P9_QTDIR, P9_QTAPPEND, P9_QTEXCL, P9_QTMOUNT, P9_QTAUTH, P9_QTTMP, P9_QTSYMLINK, P9_QTLINK, P9_QTFILE 105 106 p9_rwalk { 107 nwqid len[wqid, int16] 108 wqid array[p9_qid] 109 } [packed] 110 111 p9_ropen { 112 qid p9_qid 113 iounit int32 114 } [packed] 115 116 p9_rread { 117 count bytesize[data, int32] 118 data array[int8] 119 } [packed] 120 121 p9_rstat { 122 # I can't find this in any protocol descriptions, but linux seems to expect another int16 field here. 123 ignored const[0, int16] 124 size bytesize[parent, int16] 125 type int16 126 dev int32 127 qid p9_qid 128 mode flags[p9_perm_t, int32] 129 atime int32 130 mtime int32 131 length int64 132 name_len len[name, int16] 133 name stringnoz 134 uid_len len[uid, int16] 135 uid stringnoz 136 gid_len len[gid, int16] 137 gid stringnoz 138 muid_len len[muid, int16] 139 muid stringnoz 140 } [packed] 141 142 p9_rstatu { 143 rstat p9_rstat 144 extension_len len[extension, int16] 145 extension stringnoz 146 n_uid uid 147 n_gid gid 148 n_muid uid 149 } [packed] 150 151 p9_perm_t = P9_DMDIR, P9_DMAPPEND, P9_DMEXCL, P9_DMMOUNT, P9_DMAUTH, P9_DMTMP, P9_DMSYMLINK, P9_DMLINK, P9_DMDEVICE, P9_DMNAMEDPIPE, P9_DMSOCKET, P9_DMSETUID, P9_DMSETGID, P9_DMSETVTX 152 153 p9_rreadlink { 154 target_len len[target, int16] 155 target stringnoz[filename] 156 } [packed] 157 158 p9_rstatfs { 159 type int32 160 bsize int32 161 blocks int64 162 bfree int64 163 bavail int64 164 files int64 165 ffree int64 166 fsid int64 167 namelen int32 168 } [packed] 169 170 p9_rgetattr { 171 valid flags[p8_stats_valid, int64] 172 qid p9_qid 173 mode flags[open_mode, int32] 174 uid uid 175 gid gid 176 nlink int64 177 rdev int64 178 size int64 179 blksize int64 180 blocks int64 181 atime_sec int64 182 atime_nsec int64 183 mtime_sec int64 184 mtime_nsec int64 185 ctime_sec int64 186 ctime_nsec int64 187 btime_sec int64 188 btime_nsec int64 189 gen int64 190 data_version int64 191 } [packed] 192 193 p8_stats_valid = P9_STATS_MODE, P9_STATS_NLINK, P9_STATS_UID, P9_STATS_GID, P9_STATS_RDEV, P9_STATS_ATIME, P9_STATS_MTIME, P9_STATS_CTIME, P9_STATS_INO, P9_STATS_SIZE, P9_STATS_BLOCKS, P9_STATS_BTIME, P9_STATS_GEN, P9_STATS_DATA_VERSION 194 195 p9_lock_status = P9_LOCK_SUCCESS, P9_LOCK_BLOCKED, P9_LOCK_ERROR, P9_LOCK_GRACE 196 p9_lock_type = P9_LOCK_TYPE_RDLCK, P9_LOCK_TYPE_WRLCK, P9_LOCK_TYPE_UNLCK 197 198 p9_rreaddir { 199 count int32 200 entries array[p9_dir] 201 } [packed] 202 203 p9_dir { 204 qid p9_qid 205 offset int64 206 type int8 207 name_len len[name, int16] 208 name stringnoz[filename] 209 } [packed] 210 211 p9_rgetlock { 212 type flags[p9_lock_type, int8] 213 start int64 214 length int64 215 proc_id pid 216 client_id_len len[client_id, int16] 217 client_id stringnoz 218 } [packed] 219 220 # Mount options. 221 222 p9_options_fd { 223 trans stringnoz["trans=fd,"] 224 rfdno fs_opt_hex["rfdno", rfd9p] 225 comma0 const[',', int8] 226 wfdno fs_opt_hex["wfdno", fd] 227 comma1 const[',', int8] 228 opts fs_options[p9_options] 229 } [packed] 230 231 p9_options_tcp { 232 trans stringnoz["trans=tcp,"] 233 port fs_opt_hex["port", sock_port] 234 comma0 const[',', int8] 235 opts fs_options[p9_options] 236 } [packed] 237 238 p9_options_unix { 239 name stringnoz["trans=unix,"] 240 opts fs_options[p9_options] 241 } [packed] 242 243 p9_options_rdma { 244 trans stringnoz["trans=rdma,"] 245 port fs_opt_hex["port", sock_port] 246 comma0 const[',', int8] 247 opts fs_options[p9_options_rdma_opt] 248 } [packed] 249 250 p9_options_rdma_opt [ 251 common p9_options 252 timeout fs_opt_hex["timeout", intptr] 253 sq fs_opt_hex["sq", intptr] 254 rq fs_opt_hex["rq", intptr] 255 ] [varlen] 256 257 p9_options_virtio { 258 trans stringnoz["trans=virtio,"] 259 opts fs_options[p9_options] 260 } [packed] 261 262 p9_options_xen { 263 trans stringnoz["trans=xen,"] 264 opts fs_options[p9_options] 265 } [packed] 266 267 p9_options [ 268 uname fs_opt_str["uname"] 269 aname fs_opt_str["aname"] 270 cache_none stringnoz["cache=none"] 271 cache_loose stringnoz["cache=loose"] 272 cache_fscache stringnoz["cache=fscache"] 273 cache_mmap stringnoz["cache=mmap"] 274 debug fs_opt_hex["debug", int64] 275 noextend stringnoz["noextend"] 276 nodevmap stringnoz["nodevmap"] 277 version_9p2000 stringnoz["version=9p2000"] 278 version_u stringnoz["version=9p2000.u"] 279 version_L stringnoz["version=9p2000.L"] 280 cachetag fs_opt_str["cachetag"] 281 loose stringnoz["loose"] 282 fscache stringnoz["fscache"] 283 mmap stringnoz["mmap"] 284 posixacl stringnoz["posixacl"] 285 privport stringnoz["privport"] 286 msize fs_opt_hex["msize", int32] 287 dfltuid fs_opt_hex["dfltuid", uid] 288 dfltgid fs_opt_hex["dfltgid", gid] 289 afid fs_opt_hex["afid", int32] 290 access_user stringnoz["access=user"] 291 access_any stringnoz["access=any"] 292 access_client stringnoz["access=client"] 293 access_uid fs_opt_dec["access", uid] 294 ] [varlen] 295
