| 1 | /* $NetBSD: vmt.c,v 1.15 2016/11/10 03:32:04 ozaki-r Exp $ */ |
| 2 | /* $OpenBSD: vmt.c,v 1.11 2011/01/27 21:29:25 dtucker Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 2007 David Crawshaw <david@zentus.com> |
| 6 | * Copyright (c) 2008 David Gwynne <dlg@openbsd.org> |
| 7 | * |
| 8 | * Permission to use, copy, modify, and distribute this software for any |
| 9 | * purpose with or without fee is hereby granted, provided that the above |
| 10 | * copyright notice and this permission notice appear in all copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | * Protocol reverse engineered by Ken Kato: |
| 23 | * http://chitchat.at.infoseek.co.jp/vmware/backdoor.html |
| 24 | */ |
| 25 | |
| 26 | #include <sys/param.h> |
| 27 | #include <sys/systm.h> |
| 28 | #include <sys/kernel.h> |
| 29 | #include <sys/device.h> |
| 30 | #include <sys/types.h> |
| 31 | #include <sys/kmem.h> |
| 32 | #include <sys/callout.h> |
| 33 | #include <sys/reboot.h> |
| 34 | #include <sys/syslog.h> |
| 35 | #include <sys/proc.h> |
| 36 | #include <sys/socket.h> |
| 37 | #include <sys/timetc.h> |
| 38 | #include <sys/module.h> |
| 39 | #include <sys/sysctl.h> |
| 40 | |
| 41 | #include <net/if.h> |
| 42 | #include <netinet/in.h> |
| 43 | |
| 44 | #include <machine/cpuvar.h> |
| 45 | |
| 46 | #include <dev/sysmon/sysmonvar.h> |
| 47 | #include <dev/sysmon/sysmon_taskq.h> |
| 48 | |
| 49 | /* #define VMT_DEBUG */ |
| 50 | |
| 51 | /* OS name to report to host */ |
| 52 | #ifdef __i386__ |
| 53 | #define VM_OS_NAME "other" |
| 54 | #else |
| 55 | #define VM_OS_NAME "other-64" |
| 56 | #endif |
| 57 | |
| 58 | /* "The" magic number, always occupies the EAX register. */ |
| 59 | #define VM_MAGIC 0x564D5868 |
| 60 | |
| 61 | /* Port numbers, passed on EDX.LOW . */ |
| 62 | #define VM_PORT_CMD 0x5658 |
| 63 | #define VM_PORT_RPC 0x5659 |
| 64 | |
| 65 | /* Commands, passed on ECX.LOW. */ |
| 66 | #define VM_CMD_GET_SPEED 0x01 |
| 67 | #define VM_CMD_APM 0x02 |
| 68 | #define VM_CMD_GET_MOUSEPOS 0x04 |
| 69 | #define VM_CMD_SET_MOUSEPOS 0x05 |
| 70 | #define VM_CMD_GET_CLIPBOARD_LEN 0x06 |
| 71 | #define VM_CMD_GET_CLIPBOARD 0x07 |
| 72 | #define VM_CMD_SET_CLIPBOARD_LEN 0x08 |
| 73 | #define VM_CMD_SET_CLIPBOARD 0x09 |
| 74 | #define VM_CMD_GET_VERSION 0x0a |
| 75 | #define VM_VERSION_UNMANAGED 0x7fffffff |
| 76 | #define VM_CMD_GET_DEVINFO 0x0b |
| 77 | #define VM_CMD_DEV_ADDREMOVE 0x0c |
| 78 | #define VM_CMD_GET_GUI_OPTIONS 0x0d |
| 79 | #define VM_CMD_SET_GUI_OPTIONS 0x0e |
| 80 | #define VM_CMD_GET_SCREEN_SIZE 0x0f |
| 81 | #define VM_CMD_GET_HWVER 0x11 |
| 82 | #define 0x12 |
| 83 | #define VM_CMD_GET_BIOS_UUID 0x13 |
| 84 | #define VM_CMD_GET_MEM_SIZE 0x14 |
| 85 | /*#define VM_CMD_GET_TIME 0x17 */ /* deprecated */ |
| 86 | #define VM_CMD_RPC 0x1e |
| 87 | #define VM_CMD_GET_TIME_FULL 0x2e |
| 88 | |
| 89 | /* RPC sub-commands, passed on ECX.HIGH. */ |
| 90 | #define VM_RPC_OPEN 0x00 |
| 91 | #define VM_RPC_SET_LENGTH 0x01 |
| 92 | #define VM_RPC_SET_DATA 0x02 |
| 93 | #define VM_RPC_GET_LENGTH 0x03 |
| 94 | #define VM_RPC_GET_DATA 0x04 |
| 95 | #define VM_RPC_GET_END 0x05 |
| 96 | #define VM_RPC_CLOSE 0x06 |
| 97 | |
| 98 | /* RPC magic numbers, passed on EBX. */ |
| 99 | #define VM_RPC_OPEN_RPCI 0x49435052UL /* with VM_RPC_OPEN. */ |
| 100 | #define VM_RPC_OPEN_TCLO 0x4F4C4354UL /* with VP_RPC_OPEN. */ |
| 101 | #define VM_RPC_ENH_DATA 0x00010000UL /* with enhanced RPC data calls. */ |
| 102 | |
| 103 | #define VM_RPC_FLAG_COOKIE 0x80000000UL |
| 104 | |
| 105 | /* RPC reply flags */ |
| 106 | #define VM_RPC_REPLY_SUCCESS 0x0001 |
| 107 | #define VM_RPC_REPLY_DORECV 0x0002 /* incoming message available */ |
| 108 | #define VM_RPC_REPLY_CLOSED 0x0004 /* RPC channel is closed */ |
| 109 | #define VM_RPC_REPLY_UNSENT 0x0008 /* incoming message was removed? */ |
| 110 | #define VM_RPC_REPLY_CHECKPOINT 0x0010 /* checkpoint occurred -> retry */ |
| 111 | #define VM_RPC_REPLY_POWEROFF 0x0020 /* underlying device is powering off */ |
| 112 | #define VM_RPC_REPLY_TIMEOUT 0x0040 |
| 113 | #define VM_RPC_REPLY_HB 0x0080 /* high-bandwidth tx/rx available */ |
| 114 | |
| 115 | /* VM state change IDs */ |
| 116 | #define VM_STATE_CHANGE_HALT 1 |
| 117 | #define VM_STATE_CHANGE_REBOOT 2 |
| 118 | #define VM_STATE_CHANGE_POWERON 3 |
| 119 | #define VM_STATE_CHANGE_RESUME 4 |
| 120 | #define VM_STATE_CHANGE_SUSPEND 5 |
| 121 | |
| 122 | /* VM guest info keys */ |
| 123 | #define VM_GUEST_INFO_DNS_NAME 1 |
| 124 | #define VM_GUEST_INFO_IP_ADDRESS 2 |
| 125 | #define VM_GUEST_INFO_DISK_FREE_SPACE 3 |
| 126 | #define VM_GUEST_INFO_BUILD_NUMBER 4 |
| 127 | #define VM_GUEST_INFO_OS_NAME_FULL 5 |
| 128 | #define VM_GUEST_INFO_OS_NAME 6 |
| 129 | #define VM_GUEST_INFO_UPTIME 7 |
| 130 | #define VM_GUEST_INFO_MEMORY 8 |
| 131 | #define VM_GUEST_INFO_IP_ADDRESS_V2 9 |
| 132 | |
| 133 | /* RPC responses */ |
| 134 | #define VM_RPC_REPLY_OK "OK " |
| 135 | #define VM_RPC_RESET_REPLY "OK ATR toolbox" |
| 136 | #define VM_RPC_REPLY_ERROR "ERROR Unknown command" |
| 137 | #define VM_RPC_REPLY_ERROR_IP_ADDR "ERROR Unable to find guest IP address" |
| 138 | |
| 139 | /* A register. */ |
| 140 | union vm_reg { |
| 141 | struct { |
| 142 | uint16_t low; |
| 143 | uint16_t high; |
| 144 | } part; |
| 145 | uint32_t word; |
| 146 | #ifdef __amd64__ |
| 147 | struct { |
| 148 | uint32_t low; |
| 149 | uint32_t high; |
| 150 | } words; |
| 151 | uint64_t quad; |
| 152 | #endif |
| 153 | } __packed; |
| 154 | |
| 155 | /* A register frame. */ |
| 156 | /* XXX 'volatile' as a workaround because BACKDOOR_OP is likely broken */ |
| 157 | struct vm_backdoor { |
| 158 | volatile union vm_reg eax; |
| 159 | volatile union vm_reg ebx; |
| 160 | volatile union vm_reg ecx; |
| 161 | volatile union vm_reg edx; |
| 162 | volatile union vm_reg esi; |
| 163 | volatile union vm_reg edi; |
| 164 | volatile union vm_reg ebp; |
| 165 | } __packed; |
| 166 | |
| 167 | /* RPC context. */ |
| 168 | struct vm_rpc { |
| 169 | uint16_t channel; |
| 170 | uint32_t cookie1; |
| 171 | uint32_t cookie2; |
| 172 | }; |
| 173 | |
| 174 | static int vmt_match(device_t, cfdata_t, void *); |
| 175 | static void vmt_attach(device_t, device_t, void *); |
| 176 | static int vmt_detach(device_t, int); |
| 177 | |
| 178 | struct vmt_event { |
| 179 | struct sysmon_pswitch ev_smpsw; |
| 180 | int ev_code; |
| 181 | }; |
| 182 | |
| 183 | struct vmt_softc { |
| 184 | device_t sc_dev; |
| 185 | |
| 186 | struct sysctllog *sc_log; |
| 187 | struct vm_rpc sc_tclo_rpc; |
| 188 | bool sc_tclo_rpc_open; |
| 189 | char *sc_rpc_buf; |
| 190 | int sc_rpc_error; |
| 191 | int sc_tclo_ping; |
| 192 | int sc_set_guest_os; |
| 193 | #define VMT_RPC_BUFLEN 256 |
| 194 | |
| 195 | struct callout sc_tick; |
| 196 | struct callout sc_tclo_tick; |
| 197 | |
| 198 | #define VMT_CLOCK_SYNC_PERIOD_SECONDS 60 |
| 199 | int sc_clock_sync_period_seconds; |
| 200 | struct callout sc_clock_sync_tick; |
| 201 | |
| 202 | struct vmt_event sc_ev_power; |
| 203 | struct vmt_event sc_ev_reset; |
| 204 | struct vmt_event sc_ev_sleep; |
| 205 | bool sc_smpsw_valid; |
| 206 | |
| 207 | char sc_hostname[MAXHOSTNAMELEN]; |
| 208 | }; |
| 209 | |
| 210 | CFATTACH_DECL_NEW(vmt, sizeof(struct vmt_softc), |
| 211 | vmt_match, vmt_attach, vmt_detach, NULL); |
| 212 | |
| 213 | static int vmt_sysctl_setup_root(device_t); |
| 214 | static int vmt_sysctl_setup_clock_sync(device_t, const struct sysctlnode *); |
| 215 | static int vmt_sysctl_update_clock_sync_period(SYSCTLFN_PROTO); |
| 216 | |
| 217 | static void vm_cmd(struct vm_backdoor *); |
| 218 | static void vm_ins(struct vm_backdoor *); |
| 219 | static void vm_outs(struct vm_backdoor *); |
| 220 | |
| 221 | /* Functions for communicating with the VM Host. */ |
| 222 | static int vm_rpc_open(struct vm_rpc *, uint32_t); |
| 223 | static int vm_rpc_close(struct vm_rpc *); |
| 224 | static int vm_rpc_send(const struct vm_rpc *, const uint8_t *, uint32_t); |
| 225 | static int vm_rpc_send_str(const struct vm_rpc *, const uint8_t *); |
| 226 | static int vm_rpc_get_length(const struct vm_rpc *, uint32_t *, uint16_t *); |
| 227 | static int vm_rpc_get_data(const struct vm_rpc *, char *, uint32_t, uint16_t); |
| 228 | static int vm_rpc_send_rpci_tx_buf(struct vmt_softc *, const uint8_t *, uint32_t); |
| 229 | static int vm_rpc_send_rpci_tx(struct vmt_softc *, const char *, ...) |
| 230 | __printflike(2, 3); |
| 231 | static int vm_rpci_response_successful(struct vmt_softc *); |
| 232 | |
| 233 | static void vmt_tclo_state_change_success(struct vmt_softc *, int, char); |
| 234 | static void vmt_do_reboot(struct vmt_softc *); |
| 235 | static void vmt_do_shutdown(struct vmt_softc *); |
| 236 | |
| 237 | static void vmt_update_guest_info(struct vmt_softc *); |
| 238 | static void vmt_update_guest_uptime(struct vmt_softc *); |
| 239 | static void vmt_sync_guest_clock(struct vmt_softc *); |
| 240 | |
| 241 | static void vmt_tick(void *); |
| 242 | static void vmt_tclo_tick(void *); |
| 243 | static void vmt_clock_sync_tick(void *); |
| 244 | static bool vmt_shutdown(device_t, int); |
| 245 | static void vmt_pswitch_event(void *); |
| 246 | |
| 247 | extern char hostname[MAXHOSTNAMELEN]; |
| 248 | |
| 249 | static bool |
| 250 | vmt_probe(uint32_t *type) |
| 251 | { |
| 252 | struct vm_backdoor frame; |
| 253 | |
| 254 | memset(&frame, 0, sizeof(frame)); |
| 255 | |
| 256 | frame.eax.word = VM_MAGIC; |
| 257 | frame.ebx.word = ~VM_MAGIC; |
| 258 | frame.ecx.part.low = VM_CMD_GET_VERSION; |
| 259 | frame.ecx.part.high = 0xffff; |
| 260 | frame.edx.part.low = VM_PORT_CMD; |
| 261 | frame.edx.part.high = 0; |
| 262 | |
| 263 | vm_cmd(&frame); |
| 264 | |
| 265 | if (frame.eax.word == 0xffffffff || |
| 266 | frame.ebx.word != VM_MAGIC) |
| 267 | return false; |
| 268 | |
| 269 | if (type) |
| 270 | *type = frame.ecx.word; |
| 271 | |
| 272 | return true; |
| 273 | } |
| 274 | |
| 275 | static int |
| 276 | vmt_match(device_t parent, cfdata_t match, void *aux) |
| 277 | { |
| 278 | struct cpufeature_attach_args *cfaa = aux; |
| 279 | struct cpu_info *ci = cfaa->ci; |
| 280 | |
| 281 | if (strcmp(cfaa->name, "vm" ) != 0) |
| 282 | return 0; |
| 283 | if ((ci->ci_flags & (CPUF_BSP|CPUF_SP|CPUF_PRIMARY)) == 0) |
| 284 | return 0; |
| 285 | |
| 286 | return vmt_probe(NULL); |
| 287 | } |
| 288 | |
| 289 | static const char * |
| 290 | vmt_type(void) |
| 291 | { |
| 292 | uint32_t vmwaretype = 0; |
| 293 | |
| 294 | vmt_probe(&vmwaretype); |
| 295 | |
| 296 | switch (vmwaretype) { |
| 297 | case 1: return "Express" ; |
| 298 | case 2: return "ESX Server" ; |
| 299 | case 3: return "VMware Server" ; |
| 300 | case 4: return "Workstation" ; |
| 301 | default: return "Unknown" ; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | static void |
| 306 | vmt_attach(device_t parent, device_t self, void *aux) |
| 307 | { |
| 308 | int rv; |
| 309 | struct vmt_softc *sc = device_private(self); |
| 310 | |
| 311 | aprint_naive("\n" ); |
| 312 | aprint_normal(": %s\n" , vmt_type()); |
| 313 | |
| 314 | sc->sc_dev = self; |
| 315 | sc->sc_log = NULL; |
| 316 | |
| 317 | callout_init(&sc->sc_tick, 0); |
| 318 | callout_init(&sc->sc_tclo_tick, 0); |
| 319 | callout_init(&sc->sc_clock_sync_tick, 0); |
| 320 | |
| 321 | sc->sc_clock_sync_period_seconds = VMT_CLOCK_SYNC_PERIOD_SECONDS; |
| 322 | |
| 323 | rv = vmt_sysctl_setup_root(self); |
| 324 | if (rv != 0) { |
| 325 | aprint_error_dev(self, "failed to initialize sysctl " |
| 326 | "(err %d)\n" , rv); |
| 327 | goto free; |
| 328 | } |
| 329 | |
| 330 | sc->sc_rpc_buf = kmem_alloc(VMT_RPC_BUFLEN, KM_SLEEP); |
| 331 | if (sc->sc_rpc_buf == NULL) { |
| 332 | aprint_error_dev(self, "unable to allocate buffer for RPC\n" ); |
| 333 | goto free; |
| 334 | } |
| 335 | |
| 336 | if (vm_rpc_open(&sc->sc_tclo_rpc, VM_RPC_OPEN_TCLO) != 0) { |
| 337 | aprint_error_dev(self, "failed to open backdoor RPC channel (TCLO protocol)\n" ); |
| 338 | goto free; |
| 339 | } |
| 340 | sc->sc_tclo_rpc_open = true; |
| 341 | |
| 342 | /* don't know if this is important at all yet */ |
| 343 | if (vm_rpc_send_rpci_tx(sc, "tools.capability.hgfs_server toolbox 1" ) != 0) { |
| 344 | aprint_error_dev(self, "failed to set HGFS server capability\n" ); |
| 345 | goto free; |
| 346 | } |
| 347 | |
| 348 | pmf_device_register1(self, NULL, NULL, vmt_shutdown); |
| 349 | |
| 350 | sysmon_task_queue_init(); |
| 351 | |
| 352 | sc->sc_ev_power.ev_smpsw.smpsw_type = PSWITCH_TYPE_POWER; |
| 353 | sc->sc_ev_power.ev_smpsw.smpsw_name = device_xname(self); |
| 354 | sc->sc_ev_power.ev_code = PSWITCH_EVENT_PRESSED; |
| 355 | sysmon_pswitch_register(&sc->sc_ev_power.ev_smpsw); |
| 356 | sc->sc_ev_reset.ev_smpsw.smpsw_type = PSWITCH_TYPE_RESET; |
| 357 | sc->sc_ev_reset.ev_smpsw.smpsw_name = device_xname(self); |
| 358 | sc->sc_ev_reset.ev_code = PSWITCH_EVENT_PRESSED; |
| 359 | sysmon_pswitch_register(&sc->sc_ev_reset.ev_smpsw); |
| 360 | sc->sc_ev_sleep.ev_smpsw.smpsw_type = PSWITCH_TYPE_SLEEP; |
| 361 | sc->sc_ev_sleep.ev_smpsw.smpsw_name = device_xname(self); |
| 362 | sc->sc_ev_sleep.ev_code = PSWITCH_EVENT_RELEASED; |
| 363 | sysmon_pswitch_register(&sc->sc_ev_sleep.ev_smpsw); |
| 364 | sc->sc_smpsw_valid = true; |
| 365 | |
| 366 | callout_setfunc(&sc->sc_tick, vmt_tick, sc); |
| 367 | callout_schedule(&sc->sc_tick, hz); |
| 368 | |
| 369 | callout_setfunc(&sc->sc_tclo_tick, vmt_tclo_tick, sc); |
| 370 | callout_schedule(&sc->sc_tclo_tick, hz); |
| 371 | sc->sc_tclo_ping = 1; |
| 372 | |
| 373 | callout_setfunc(&sc->sc_clock_sync_tick, vmt_clock_sync_tick, sc); |
| 374 | callout_schedule(&sc->sc_clock_sync_tick, |
| 375 | mstohz(sc->sc_clock_sync_period_seconds * 1000)); |
| 376 | |
| 377 | vmt_sync_guest_clock(sc); |
| 378 | |
| 379 | return; |
| 380 | |
| 381 | free: |
| 382 | if (sc->sc_rpc_buf) |
| 383 | kmem_free(sc->sc_rpc_buf, VMT_RPC_BUFLEN); |
| 384 | pmf_device_register(self, NULL, NULL); |
| 385 | if (sc->sc_log) |
| 386 | sysctl_teardown(&sc->sc_log); |
| 387 | } |
| 388 | |
| 389 | static int |
| 390 | vmt_detach(device_t self, int flags) |
| 391 | { |
| 392 | struct vmt_softc *sc = device_private(self); |
| 393 | |
| 394 | if (sc->sc_tclo_rpc_open) |
| 395 | vm_rpc_close(&sc->sc_tclo_rpc); |
| 396 | |
| 397 | if (sc->sc_smpsw_valid) { |
| 398 | sysmon_pswitch_unregister(&sc->sc_ev_sleep.ev_smpsw); |
| 399 | sysmon_pswitch_unregister(&sc->sc_ev_reset.ev_smpsw); |
| 400 | sysmon_pswitch_unregister(&sc->sc_ev_power.ev_smpsw); |
| 401 | } |
| 402 | |
| 403 | callout_halt(&sc->sc_tick, NULL); |
| 404 | callout_destroy(&sc->sc_tick); |
| 405 | |
| 406 | callout_halt(&sc->sc_tclo_tick, NULL); |
| 407 | callout_destroy(&sc->sc_tclo_tick); |
| 408 | |
| 409 | callout_halt(&sc->sc_clock_sync_tick, NULL); |
| 410 | callout_destroy(&sc->sc_clock_sync_tick); |
| 411 | |
| 412 | if (sc->sc_rpc_buf) |
| 413 | kmem_free(sc->sc_rpc_buf, VMT_RPC_BUFLEN); |
| 414 | |
| 415 | if (sc->sc_log) { |
| 416 | sysctl_teardown(&sc->sc_log); |
| 417 | sc->sc_log = NULL; |
| 418 | } |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | static int |
| 424 | vmt_sysctl_setup_root(device_t self) |
| 425 | { |
| 426 | const struct sysctlnode *machdep_node, *vmt_node; |
| 427 | struct vmt_softc *sc = device_private(self); |
| 428 | int rv; |
| 429 | |
| 430 | rv = sysctl_createv(&sc->sc_log, 0, NULL, &machdep_node, |
| 431 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep" , NULL, |
| 432 | NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL); |
| 433 | if (rv != 0) |
| 434 | goto fail; |
| 435 | |
| 436 | rv = sysctl_createv(&sc->sc_log, 0, &machdep_node, &vmt_node, |
| 437 | 0, CTLTYPE_NODE, device_xname(self), NULL, |
| 438 | NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); |
| 439 | if (rv != 0) |
| 440 | goto fail; |
| 441 | |
| 442 | rv = vmt_sysctl_setup_clock_sync(self, vmt_node); |
| 443 | if (rv != 0) |
| 444 | goto fail; |
| 445 | |
| 446 | return 0; |
| 447 | |
| 448 | fail: |
| 449 | sysctl_teardown(&sc->sc_log); |
| 450 | sc->sc_log = NULL; |
| 451 | |
| 452 | return rv; |
| 453 | } |
| 454 | |
| 455 | static int |
| 456 | vmt_sysctl_setup_clock_sync(device_t self, const struct sysctlnode *root_node) |
| 457 | { |
| 458 | const struct sysctlnode *node, *period_node; |
| 459 | struct vmt_softc *sc = device_private(self); |
| 460 | int rv; |
| 461 | |
| 462 | rv = sysctl_createv(&sc->sc_log, 0, &root_node, &node, |
| 463 | 0, CTLTYPE_NODE, "clock_sync" , NULL, |
| 464 | NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); |
| 465 | if (rv != 0) |
| 466 | return rv; |
| 467 | |
| 468 | rv = sysctl_createv(&sc->sc_log, 0, &node, &period_node, |
| 469 | CTLFLAG_READWRITE, CTLTYPE_INT, "period" , |
| 470 | SYSCTL_DESCR("Period, in seconds, at which to update the " |
| 471 | "guest's clock" ), |
| 472 | vmt_sysctl_update_clock_sync_period, 0, (void *)sc, 0, |
| 473 | CTL_CREATE, CTL_EOL); |
| 474 | return rv; |
| 475 | } |
| 476 | |
| 477 | static int |
| 478 | vmt_sysctl_update_clock_sync_period(SYSCTLFN_ARGS) |
| 479 | { |
| 480 | int error, period; |
| 481 | struct sysctlnode node; |
| 482 | struct vmt_softc *sc; |
| 483 | |
| 484 | node = *rnode; |
| 485 | sc = (struct vmt_softc *)node.sysctl_data; |
| 486 | |
| 487 | period = sc->sc_clock_sync_period_seconds; |
| 488 | node.sysctl_data = . |
| 489 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 490 | if (error || newp == NULL) |
| 491 | return error; |
| 492 | |
| 493 | if (sc->sc_clock_sync_period_seconds != period) { |
| 494 | callout_halt(&sc->sc_clock_sync_tick, NULL); |
| 495 | sc->sc_clock_sync_period_seconds = period; |
| 496 | if (sc->sc_clock_sync_period_seconds > 0) |
| 497 | callout_schedule(&sc->sc_clock_sync_tick, |
| 498 | mstohz(sc->sc_clock_sync_period_seconds * 1000)); |
| 499 | } |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | static void |
| 504 | vmt_clock_sync_tick(void *xarg) |
| 505 | { |
| 506 | struct vmt_softc *sc = xarg; |
| 507 | |
| 508 | vmt_sync_guest_clock(sc); |
| 509 | |
| 510 | callout_schedule(&sc->sc_clock_sync_tick, |
| 511 | mstohz(sc->sc_clock_sync_period_seconds * 1000)); |
| 512 | } |
| 513 | |
| 514 | static void |
| 515 | vmt_update_guest_uptime(struct vmt_softc *sc) |
| 516 | { |
| 517 | /* host wants uptime in hundredths of a second */ |
| 518 | if (vm_rpc_send_rpci_tx(sc, "SetGuestInfo %d %" PRId64 "00" , |
| 519 | VM_GUEST_INFO_UPTIME, time_uptime) != 0) { |
| 520 | device_printf(sc->sc_dev, "unable to set guest uptime\n" ); |
| 521 | sc->sc_rpc_error = 1; |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | static void |
| 526 | vmt_update_guest_info(struct vmt_softc *sc) |
| 527 | { |
| 528 | if (strncmp(sc->sc_hostname, hostname, sizeof(sc->sc_hostname)) != 0) { |
| 529 | strlcpy(sc->sc_hostname, hostname, sizeof(sc->sc_hostname)); |
| 530 | |
| 531 | if (vm_rpc_send_rpci_tx(sc, "SetGuestInfo %d %s" , |
| 532 | VM_GUEST_INFO_DNS_NAME, sc->sc_hostname) != 0) { |
| 533 | device_printf(sc->sc_dev, "unable to set hostname\n" ); |
| 534 | sc->sc_rpc_error = 1; |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | /* |
| 539 | * we're supposed to pass the full network address information back here, |
| 540 | * but that involves xdr (sunrpc) data encoding, which seems a bit unreasonable. |
| 541 | */ |
| 542 | |
| 543 | if (sc->sc_set_guest_os == 0) { |
| 544 | if (vm_rpc_send_rpci_tx(sc, "SetGuestInfo %d %s %s %s" , |
| 545 | VM_GUEST_INFO_OS_NAME_FULL, ostype, osrelease, machine_arch) != 0) { |
| 546 | device_printf(sc->sc_dev, "unable to set full guest OS\n" ); |
| 547 | sc->sc_rpc_error = 1; |
| 548 | } |
| 549 | |
| 550 | /* |
| 551 | * host doesn't like it if we send an OS name it doesn't recognise, |
| 552 | * so use "other" for i386 and "other-64" for amd64 |
| 553 | */ |
| 554 | if (vm_rpc_send_rpci_tx(sc, "SetGuestInfo %d %s" , |
| 555 | VM_GUEST_INFO_OS_NAME, VM_OS_NAME) != 0) { |
| 556 | device_printf(sc->sc_dev, "unable to set guest OS\n" ); |
| 557 | sc->sc_rpc_error = 1; |
| 558 | } |
| 559 | |
| 560 | sc->sc_set_guest_os = 1; |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | static void |
| 565 | vmt_sync_guest_clock(struct vmt_softc *sc) |
| 566 | { |
| 567 | struct vm_backdoor frame; |
| 568 | struct timespec ts; |
| 569 | |
| 570 | memset(&frame, 0, sizeof(frame)); |
| 571 | frame.eax.word = VM_MAGIC; |
| 572 | frame.ecx.part.low = VM_CMD_GET_TIME_FULL; |
| 573 | frame.edx.part.low = VM_PORT_CMD; |
| 574 | vm_cmd(&frame); |
| 575 | |
| 576 | if (frame.eax.word != 0xffffffff) { |
| 577 | ts.tv_sec = ((uint64_t)frame.esi.word << 32) | frame.edx.word; |
| 578 | ts.tv_nsec = frame.ebx.word * 1000; |
| 579 | tc_setclock(&ts); |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | static void |
| 584 | vmt_tick(void *xarg) |
| 585 | { |
| 586 | struct vmt_softc *sc = xarg; |
| 587 | |
| 588 | vmt_update_guest_info(sc); |
| 589 | vmt_update_guest_uptime(sc); |
| 590 | |
| 591 | callout_schedule(&sc->sc_tick, hz * 15); |
| 592 | } |
| 593 | |
| 594 | static void |
| 595 | vmt_tclo_state_change_success(struct vmt_softc *sc, int success, char state) |
| 596 | { |
| 597 | if (vm_rpc_send_rpci_tx(sc, "tools.os.statechange.status %d %d" , |
| 598 | success, state) != 0) { |
| 599 | device_printf(sc->sc_dev, "unable to send state change result\n" ); |
| 600 | sc->sc_rpc_error = 1; |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | static void |
| 605 | vmt_do_shutdown(struct vmt_softc *sc) |
| 606 | { |
| 607 | vmt_tclo_state_change_success(sc, 1, VM_STATE_CHANGE_HALT); |
| 608 | vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK); |
| 609 | |
| 610 | device_printf(sc->sc_dev, "host requested shutdown\n" ); |
| 611 | sysmon_task_queue_sched(0, vmt_pswitch_event, &sc->sc_ev_power); |
| 612 | } |
| 613 | |
| 614 | static void |
| 615 | vmt_do_reboot(struct vmt_softc *sc) |
| 616 | { |
| 617 | vmt_tclo_state_change_success(sc, 1, VM_STATE_CHANGE_REBOOT); |
| 618 | vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK); |
| 619 | |
| 620 | device_printf(sc->sc_dev, "host requested reboot\n" ); |
| 621 | sysmon_task_queue_sched(0, vmt_pswitch_event, &sc->sc_ev_reset); |
| 622 | } |
| 623 | |
| 624 | static void |
| 625 | vmt_do_resume(struct vmt_softc *sc) |
| 626 | { |
| 627 | device_printf(sc->sc_dev, "guest resuming from suspended state\n" ); |
| 628 | |
| 629 | vmt_sync_guest_clock(sc); |
| 630 | |
| 631 | /* force guest info update */ |
| 632 | sc->sc_hostname[0] = '\0'; |
| 633 | sc->sc_set_guest_os = 0; |
| 634 | vmt_update_guest_info(sc); |
| 635 | |
| 636 | vmt_tclo_state_change_success(sc, 1, VM_STATE_CHANGE_RESUME); |
| 637 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK) != 0) { |
| 638 | device_printf(sc->sc_dev, "error sending resume response\n" ); |
| 639 | sc->sc_rpc_error = 1; |
| 640 | } |
| 641 | |
| 642 | sysmon_task_queue_sched(0, vmt_pswitch_event, &sc->sc_ev_sleep); |
| 643 | } |
| 644 | |
| 645 | static bool |
| 646 | vmt_shutdown(device_t self, int flags) |
| 647 | { |
| 648 | struct vmt_softc *sc = device_private(self); |
| 649 | |
| 650 | if (vm_rpc_send_rpci_tx(sc, "tools.capability.hgfs_server toolbox 0" ) != 0) { |
| 651 | device_printf(sc->sc_dev, "failed to disable hgfs server capability\n" ); |
| 652 | } |
| 653 | |
| 654 | if (vm_rpc_send(&sc->sc_tclo_rpc, NULL, 0) != 0) { |
| 655 | device_printf(sc->sc_dev, "failed to send shutdown ping\n" ); |
| 656 | } |
| 657 | |
| 658 | vm_rpc_close(&sc->sc_tclo_rpc); |
| 659 | |
| 660 | return true; |
| 661 | } |
| 662 | |
| 663 | static void |
| 664 | vmt_pswitch_event(void *xarg) |
| 665 | { |
| 666 | struct vmt_event *ev = xarg; |
| 667 | |
| 668 | sysmon_pswitch_event(&ev->ev_smpsw, ev->ev_code); |
| 669 | } |
| 670 | |
| 671 | static void |
| 672 | vmt_tclo_tick(void *xarg) |
| 673 | { |
| 674 | struct vmt_softc *sc = xarg; |
| 675 | u_int32_t rlen; |
| 676 | u_int16_t ack; |
| 677 | |
| 678 | /* reopen tclo channel if it's currently closed */ |
| 679 | if (sc->sc_tclo_rpc.channel == 0 && |
| 680 | sc->sc_tclo_rpc.cookie1 == 0 && |
| 681 | sc->sc_tclo_rpc.cookie2 == 0) { |
| 682 | if (vm_rpc_open(&sc->sc_tclo_rpc, VM_RPC_OPEN_TCLO) != 0) { |
| 683 | device_printf(sc->sc_dev, "unable to reopen TCLO channel\n" ); |
| 684 | callout_schedule(&sc->sc_tclo_tick, hz * 15); |
| 685 | return; |
| 686 | } |
| 687 | |
| 688 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_RESET_REPLY) != 0) { |
| 689 | device_printf(sc->sc_dev, "failed to send reset reply\n" ); |
| 690 | sc->sc_rpc_error = 1; |
| 691 | goto out; |
| 692 | } else { |
| 693 | sc->sc_rpc_error = 0; |
| 694 | } |
| 695 | } |
| 696 | |
| 697 | if (sc->sc_tclo_ping) { |
| 698 | if (vm_rpc_send(&sc->sc_tclo_rpc, NULL, 0) != 0) { |
| 699 | device_printf(sc->sc_dev, "failed to send TCLO outgoing ping\n" ); |
| 700 | sc->sc_rpc_error = 1; |
| 701 | goto out; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | if (vm_rpc_get_length(&sc->sc_tclo_rpc, &rlen, &ack) != 0) { |
| 706 | device_printf(sc->sc_dev, "failed to get length of incoming TCLO data\n" ); |
| 707 | sc->sc_rpc_error = 1; |
| 708 | goto out; |
| 709 | } |
| 710 | |
| 711 | if (rlen == 0) { |
| 712 | sc->sc_tclo_ping = 1; |
| 713 | goto out; |
| 714 | } |
| 715 | |
| 716 | if (rlen >= VMT_RPC_BUFLEN) { |
| 717 | rlen = VMT_RPC_BUFLEN - 1; |
| 718 | } |
| 719 | if (vm_rpc_get_data(&sc->sc_tclo_rpc, sc->sc_rpc_buf, rlen, ack) != 0) { |
| 720 | device_printf(sc->sc_dev, "failed to get incoming TCLO data\n" ); |
| 721 | sc->sc_rpc_error = 1; |
| 722 | goto out; |
| 723 | } |
| 724 | sc->sc_tclo_ping = 0; |
| 725 | |
| 726 | #ifdef VMT_DEBUG |
| 727 | printf("vmware: received message '%s'\n" , sc->sc_rpc_buf); |
| 728 | #endif |
| 729 | |
| 730 | if (strcmp(sc->sc_rpc_buf, "reset" ) == 0) { |
| 731 | |
| 732 | if (sc->sc_rpc_error != 0) { |
| 733 | device_printf(sc->sc_dev, "resetting rpc\n" ); |
| 734 | vm_rpc_close(&sc->sc_tclo_rpc); |
| 735 | /* reopen and send the reset reply next time around */ |
| 736 | goto out; |
| 737 | } |
| 738 | |
| 739 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_RESET_REPLY) != 0) { |
| 740 | device_printf(sc->sc_dev, "failed to send reset reply\n" ); |
| 741 | sc->sc_rpc_error = 1; |
| 742 | } |
| 743 | |
| 744 | } else if (strcmp(sc->sc_rpc_buf, "ping" ) == 0) { |
| 745 | |
| 746 | vmt_update_guest_info(sc); |
| 747 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK) != 0) { |
| 748 | device_printf(sc->sc_dev, "error sending ping response\n" ); |
| 749 | sc->sc_rpc_error = 1; |
| 750 | } |
| 751 | |
| 752 | } else if (strcmp(sc->sc_rpc_buf, "OS_Halt" ) == 0) { |
| 753 | vmt_do_shutdown(sc); |
| 754 | } else if (strcmp(sc->sc_rpc_buf, "OS_Reboot" ) == 0) { |
| 755 | vmt_do_reboot(sc); |
| 756 | } else if (strcmp(sc->sc_rpc_buf, "OS_PowerOn" ) == 0) { |
| 757 | vmt_tclo_state_change_success(sc, 1, VM_STATE_CHANGE_POWERON); |
| 758 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK) != 0) { |
| 759 | device_printf(sc->sc_dev, "error sending poweron response\n" ); |
| 760 | sc->sc_rpc_error = 1; |
| 761 | } |
| 762 | } else if (strcmp(sc->sc_rpc_buf, "OS_Suspend" ) == 0) { |
| 763 | log(LOG_KERN | LOG_NOTICE, "VMware guest entering suspended state\n" ); |
| 764 | |
| 765 | vmt_tclo_state_change_success(sc, 1, VM_STATE_CHANGE_SUSPEND); |
| 766 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK) != 0) { |
| 767 | device_printf(sc->sc_dev, "error sending suspend response\n" ); |
| 768 | sc->sc_rpc_error = 1; |
| 769 | } |
| 770 | } else if (strcmp(sc->sc_rpc_buf, "OS_Resume" ) == 0) { |
| 771 | vmt_do_resume(sc); |
| 772 | } else if (strcmp(sc->sc_rpc_buf, "Capabilities_Register" ) == 0) { |
| 773 | |
| 774 | /* don't know if this is important at all */ |
| 775 | if (vm_rpc_send_rpci_tx(sc, "vmx.capability.unified_loop toolbox" ) != 0) { |
| 776 | device_printf(sc->sc_dev, "unable to set unified loop\n" ); |
| 777 | sc->sc_rpc_error = 1; |
| 778 | } |
| 779 | if (vm_rpci_response_successful(sc) == 0) { |
| 780 | device_printf(sc->sc_dev, "host rejected unified loop setting\n" ); |
| 781 | } |
| 782 | |
| 783 | /* the trailing space is apparently important here */ |
| 784 | if (vm_rpc_send_rpci_tx(sc, "tools.capability.statechange " ) != 0) { |
| 785 | device_printf(sc->sc_dev, "unable to send statechange capability\n" ); |
| 786 | sc->sc_rpc_error = 1; |
| 787 | } |
| 788 | if (vm_rpci_response_successful(sc) == 0) { |
| 789 | device_printf(sc->sc_dev, "host rejected statechange capability\n" ); |
| 790 | } |
| 791 | |
| 792 | if (vm_rpc_send_rpci_tx(sc, "tools.set.version %u" , VM_VERSION_UNMANAGED) != 0) { |
| 793 | device_printf(sc->sc_dev, "unable to set tools version\n" ); |
| 794 | sc->sc_rpc_error = 1; |
| 795 | } |
| 796 | |
| 797 | vmt_update_guest_uptime(sc); |
| 798 | |
| 799 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK) != 0) { |
| 800 | device_printf(sc->sc_dev, "error sending capabilities_register response\n" ); |
| 801 | sc->sc_rpc_error = 1; |
| 802 | } |
| 803 | } else if (strcmp(sc->sc_rpc_buf, "Set_Option broadcastIP 1" ) == 0) { |
| 804 | struct ifaddr *iface_addr = NULL; |
| 805 | struct ifnet *iface; |
| 806 | struct sockaddr_in *guest_ip; |
| 807 | int s; |
| 808 | struct psref psref; |
| 809 | |
| 810 | /* find first available ipv4 address */ |
| 811 | guest_ip = NULL; |
| 812 | s = pserialize_read_enter(); |
| 813 | IFNET_READER_FOREACH(iface) { |
| 814 | |
| 815 | /* skip loopback */ |
| 816 | if (strncmp(iface->if_xname, "lo" , 2) == 0 && |
| 817 | iface->if_xname[2] >= '0' && iface->if_xname[2] <= '9') { |
| 818 | continue; |
| 819 | } |
| 820 | |
| 821 | IFADDR_READER_FOREACH(iface_addr, iface) { |
| 822 | if (iface_addr->ifa_addr->sa_family != AF_INET) { |
| 823 | continue; |
| 824 | } |
| 825 | |
| 826 | guest_ip = satosin(iface_addr->ifa_addr); |
| 827 | ifa_acquire(iface_addr, &psref); |
| 828 | goto got; |
| 829 | } |
| 830 | } |
| 831 | got: |
| 832 | pserialize_read_exit(s); |
| 833 | |
| 834 | if (guest_ip != NULL) { |
| 835 | if (vm_rpc_send_rpci_tx(sc, "info-set guestinfo.ip %s" , |
| 836 | inet_ntoa(guest_ip->sin_addr)) != 0) { |
| 837 | device_printf(sc->sc_dev, "unable to send guest IP address\n" ); |
| 838 | sc->sc_rpc_error = 1; |
| 839 | } |
| 840 | ifa_release(iface_addr, &psref); |
| 841 | |
| 842 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_OK) != 0) { |
| 843 | device_printf(sc->sc_dev, "error sending broadcastIP response\n" ); |
| 844 | sc->sc_rpc_error = 1; |
| 845 | } |
| 846 | } else { |
| 847 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_ERROR_IP_ADDR) != 0) { |
| 848 | device_printf(sc->sc_dev, |
| 849 | "error sending broadcastIP error response\n" ); |
| 850 | sc->sc_rpc_error = 1; |
| 851 | } |
| 852 | } |
| 853 | } else { |
| 854 | if (vm_rpc_send_str(&sc->sc_tclo_rpc, VM_RPC_REPLY_ERROR) != 0) { |
| 855 | device_printf(sc->sc_dev, "error sending unknown command reply\n" ); |
| 856 | sc->sc_rpc_error = 1; |
| 857 | } |
| 858 | } |
| 859 | |
| 860 | out: |
| 861 | callout_schedule(&sc->sc_tclo_tick, sc->sc_tclo_ping ? hz : 1); |
| 862 | } |
| 863 | |
| 864 | #define BACKDOOR_OP_I386(op, frame) \ |
| 865 | __asm__ __volatile__ ( \ |
| 866 | "pushal;" \ |
| 867 | "pushl %%eax;" \ |
| 868 | "movl 0x18(%%eax), %%ebp;" \ |
| 869 | "movl 0x14(%%eax), %%edi;" \ |
| 870 | "movl 0x10(%%eax), %%esi;" \ |
| 871 | "movl 0x0c(%%eax), %%edx;" \ |
| 872 | "movl 0x08(%%eax), %%ecx;" \ |
| 873 | "movl 0x04(%%eax), %%ebx;" \ |
| 874 | "movl 0x00(%%eax), %%eax;" \ |
| 875 | op \ |
| 876 | "xchgl %%eax, 0x00(%%esp);" \ |
| 877 | "movl %%ebp, 0x18(%%eax);" \ |
| 878 | "movl %%edi, 0x14(%%eax);" \ |
| 879 | "movl %%esi, 0x10(%%eax);" \ |
| 880 | "movl %%edx, 0x0c(%%eax);" \ |
| 881 | "movl %%ecx, 0x08(%%eax);" \ |
| 882 | "movl %%ebx, 0x04(%%eax);" \ |
| 883 | "popl 0x00(%%eax);" \ |
| 884 | "popal;" \ |
| 885 | : \ |
| 886 | :"a"(frame) \ |
| 887 | ) |
| 888 | |
| 889 | #define BACKDOOR_OP_AMD64(op, frame) \ |
| 890 | __asm__ __volatile__ ( \ |
| 891 | "pushq %%rbp; \n\t" \ |
| 892 | "pushq %%rax; \n\t" \ |
| 893 | "movq 0x30(%%rax), %%rbp; \n\t" \ |
| 894 | "movq 0x28(%%rax), %%rdi; \n\t" \ |
| 895 | "movq 0x20(%%rax), %%rsi; \n\t" \ |
| 896 | "movq 0x18(%%rax), %%rdx; \n\t" \ |
| 897 | "movq 0x10(%%rax), %%rcx; \n\t" \ |
| 898 | "movq 0x08(%%rax), %%rbx; \n\t" \ |
| 899 | "movq 0x00(%%rax), %%rax; \n\t" \ |
| 900 | op "\n\t" \ |
| 901 | "xchgq %%rax, 0x00(%%rsp); \n\t" \ |
| 902 | "movq %%rbp, 0x30(%%rax); \n\t" \ |
| 903 | "movq %%rdi, 0x28(%%rax); \n\t" \ |
| 904 | "movq %%rsi, 0x20(%%rax); \n\t" \ |
| 905 | "movq %%rdx, 0x18(%%rax); \n\t" \ |
| 906 | "movq %%rcx, 0x10(%%rax); \n\t" \ |
| 907 | "movq %%rbx, 0x08(%%rax); \n\t" \ |
| 908 | "popq 0x00(%%rax); \n\t" \ |
| 909 | "popq %%rbp; \n\t" \ |
| 910 | : /* No outputs. */ : "a" (frame) \ |
| 911 | /* No pushal on amd64 so warn gcc about the clobbered registers. */ \ |
| 912 | : "rbx", "rcx", "rdx", "rdi", "rsi", "cc", "memory" \ |
| 913 | ) |
| 914 | |
| 915 | |
| 916 | #ifdef __i386__ |
| 917 | #define BACKDOOR_OP(op, frame) BACKDOOR_OP_I386(op, frame) |
| 918 | #else |
| 919 | #define BACKDOOR_OP(op, frame) BACKDOOR_OP_AMD64(op, frame) |
| 920 | #endif |
| 921 | |
| 922 | static void |
| 923 | vm_cmd(struct vm_backdoor *frame) |
| 924 | { |
| 925 | BACKDOOR_OP("inl %%dx, %%eax;" , frame); |
| 926 | } |
| 927 | |
| 928 | static void |
| 929 | vm_ins(struct vm_backdoor *frame) |
| 930 | { |
| 931 | BACKDOOR_OP("cld;\n\trep insb;" , frame); |
| 932 | } |
| 933 | |
| 934 | static void |
| 935 | vm_outs(struct vm_backdoor *frame) |
| 936 | { |
| 937 | BACKDOOR_OP("cld;\n\trep outsb;" , frame); |
| 938 | } |
| 939 | |
| 940 | static int |
| 941 | vm_rpc_open(struct vm_rpc *rpc, uint32_t proto) |
| 942 | { |
| 943 | struct vm_backdoor frame; |
| 944 | |
| 945 | memset(&frame, 0, sizeof(frame)); |
| 946 | frame.eax.word = VM_MAGIC; |
| 947 | frame.ebx.word = proto | VM_RPC_FLAG_COOKIE; |
| 948 | frame.ecx.part.low = VM_CMD_RPC; |
| 949 | frame.ecx.part.high = VM_RPC_OPEN; |
| 950 | frame.edx.part.low = VM_PORT_CMD; |
| 951 | frame.edx.part.high = 0; |
| 952 | |
| 953 | vm_cmd(&frame); |
| 954 | |
| 955 | if (frame.ecx.part.high != 1 || frame.edx.part.low != 0) { |
| 956 | /* open-vm-tools retries without VM_RPC_FLAG_COOKIE here.. */ |
| 957 | printf("vmware: open failed, eax=%08x, ecx=%08x, edx=%08x\n" , |
| 958 | frame.eax.word, frame.ecx.word, frame.edx.word); |
| 959 | return EIO; |
| 960 | } |
| 961 | |
| 962 | rpc->channel = frame.edx.part.high; |
| 963 | rpc->cookie1 = frame.esi.word; |
| 964 | rpc->cookie2 = frame.edi.word; |
| 965 | |
| 966 | return 0; |
| 967 | } |
| 968 | |
| 969 | static int |
| 970 | vm_rpc_close(struct vm_rpc *rpc) |
| 971 | { |
| 972 | struct vm_backdoor frame; |
| 973 | |
| 974 | memset(&frame, 0, sizeof(frame)); |
| 975 | frame.eax.word = VM_MAGIC; |
| 976 | frame.ebx.word = 0; |
| 977 | frame.ecx.part.low = VM_CMD_RPC; |
| 978 | frame.ecx.part.high = VM_RPC_CLOSE; |
| 979 | frame.edx.part.low = VM_PORT_CMD; |
| 980 | frame.edx.part.high = rpc->channel; |
| 981 | frame.edi.word = rpc->cookie2; |
| 982 | frame.esi.word = rpc->cookie1; |
| 983 | |
| 984 | vm_cmd(&frame); |
| 985 | |
| 986 | if (frame.ecx.part.high == 0 || frame.ecx.part.low != 0) { |
| 987 | printf("vmware: close failed, eax=%08x, ecx=%08x\n" , |
| 988 | frame.eax.word, frame.ecx.word); |
| 989 | return EIO; |
| 990 | } |
| 991 | |
| 992 | rpc->channel = 0; |
| 993 | rpc->cookie1 = 0; |
| 994 | rpc->cookie2 = 0; |
| 995 | |
| 996 | return 0; |
| 997 | } |
| 998 | |
| 999 | static int |
| 1000 | vm_rpc_send(const struct vm_rpc *rpc, const uint8_t *buf, uint32_t length) |
| 1001 | { |
| 1002 | struct vm_backdoor frame; |
| 1003 | |
| 1004 | /* Send the length of the command. */ |
| 1005 | memset(&frame, 0, sizeof(frame)); |
| 1006 | frame.eax.word = VM_MAGIC; |
| 1007 | frame.ebx.word = length; |
| 1008 | frame.ecx.part.low = VM_CMD_RPC; |
| 1009 | frame.ecx.part.high = VM_RPC_SET_LENGTH; |
| 1010 | frame.edx.part.low = VM_PORT_CMD; |
| 1011 | frame.edx.part.high = rpc->channel; |
| 1012 | frame.esi.word = rpc->cookie1; |
| 1013 | frame.edi.word = rpc->cookie2; |
| 1014 | |
| 1015 | vm_cmd(&frame); |
| 1016 | |
| 1017 | if ((frame.ecx.part.high & VM_RPC_REPLY_SUCCESS) == 0) { |
| 1018 | printf("vmware: sending length failed, eax=%08x, ecx=%08x\n" , |
| 1019 | frame.eax.word, frame.ecx.word); |
| 1020 | return EIO; |
| 1021 | } |
| 1022 | |
| 1023 | if (length == 0) |
| 1024 | return 0; /* Only need to poke once if command is null. */ |
| 1025 | |
| 1026 | /* Send the command using enhanced RPC. */ |
| 1027 | memset(&frame, 0, sizeof(frame)); |
| 1028 | frame.eax.word = VM_MAGIC; |
| 1029 | frame.ebx.word = VM_RPC_ENH_DATA; |
| 1030 | frame.ecx.word = length; |
| 1031 | frame.edx.part.low = VM_PORT_RPC; |
| 1032 | frame.edx.part.high = rpc->channel; |
| 1033 | frame.ebp.word = rpc->cookie1; |
| 1034 | frame.edi.word = rpc->cookie2; |
| 1035 | #ifdef __amd64__ |
| 1036 | frame.esi.quad = (uint64_t)buf; |
| 1037 | #else |
| 1038 | frame.esi.word = (uint32_t)buf; |
| 1039 | #endif |
| 1040 | |
| 1041 | vm_outs(&frame); |
| 1042 | |
| 1043 | if (frame.ebx.word != VM_RPC_ENH_DATA) { |
| 1044 | /* open-vm-tools retries on VM_RPC_REPLY_CHECKPOINT */ |
| 1045 | printf("vmware: send failed, ebx=%08x\n" , frame.ebx.word); |
| 1046 | return EIO; |
| 1047 | } |
| 1048 | |
| 1049 | return 0; |
| 1050 | } |
| 1051 | |
| 1052 | static int |
| 1053 | vm_rpc_send_str(const struct vm_rpc *rpc, const uint8_t *str) |
| 1054 | { |
| 1055 | return vm_rpc_send(rpc, str, strlen(str)); |
| 1056 | } |
| 1057 | |
| 1058 | static int |
| 1059 | vm_rpc_get_data(const struct vm_rpc *rpc, char *data, uint32_t length, |
| 1060 | uint16_t dataid) |
| 1061 | { |
| 1062 | struct vm_backdoor frame; |
| 1063 | |
| 1064 | /* Get data using enhanced RPC. */ |
| 1065 | memset(&frame, 0, sizeof(frame)); |
| 1066 | frame.eax.word = VM_MAGIC; |
| 1067 | frame.ebx.word = VM_RPC_ENH_DATA; |
| 1068 | frame.ecx.word = length; |
| 1069 | frame.edx.part.low = VM_PORT_RPC; |
| 1070 | frame.edx.part.high = rpc->channel; |
| 1071 | frame.esi.word = rpc->cookie1; |
| 1072 | #ifdef __amd64__ |
| 1073 | frame.edi.quad = (uint64_t)data; |
| 1074 | #else |
| 1075 | frame.edi.word = (uint32_t)data; |
| 1076 | #endif |
| 1077 | frame.ebp.word = rpc->cookie2; |
| 1078 | |
| 1079 | vm_ins(&frame); |
| 1080 | |
| 1081 | /* NUL-terminate the data */ |
| 1082 | data[length] = '\0'; |
| 1083 | |
| 1084 | if (frame.ebx.word != VM_RPC_ENH_DATA) { |
| 1085 | printf("vmware: get data failed, ebx=%08x\n" , |
| 1086 | frame.ebx.word); |
| 1087 | return EIO; |
| 1088 | } |
| 1089 | |
| 1090 | /* Acknowledge data received. */ |
| 1091 | memset(&frame, 0, sizeof(frame)); |
| 1092 | frame.eax.word = VM_MAGIC; |
| 1093 | frame.ebx.word = dataid; |
| 1094 | frame.ecx.part.low = VM_CMD_RPC; |
| 1095 | frame.ecx.part.high = VM_RPC_GET_END; |
| 1096 | frame.edx.part.low = VM_PORT_CMD; |
| 1097 | frame.edx.part.high = rpc->channel; |
| 1098 | frame.esi.word = rpc->cookie1; |
| 1099 | frame.edi.word = rpc->cookie2; |
| 1100 | |
| 1101 | vm_cmd(&frame); |
| 1102 | |
| 1103 | if (frame.ecx.part.high == 0) { |
| 1104 | printf("vmware: ack data failed, eax=%08x, ecx=%08x\n" , |
| 1105 | frame.eax.word, frame.ecx.word); |
| 1106 | return EIO; |
| 1107 | } |
| 1108 | |
| 1109 | return 0; |
| 1110 | } |
| 1111 | |
| 1112 | static int |
| 1113 | vm_rpc_get_length(const struct vm_rpc *rpc, uint32_t *length, uint16_t *dataid) |
| 1114 | { |
| 1115 | struct vm_backdoor frame; |
| 1116 | |
| 1117 | memset(&frame, 0, sizeof(frame)); |
| 1118 | frame.eax.word = VM_MAGIC; |
| 1119 | frame.ebx.word = 0; |
| 1120 | frame.ecx.part.low = VM_CMD_RPC; |
| 1121 | frame.ecx.part.high = VM_RPC_GET_LENGTH; |
| 1122 | frame.edx.part.low = VM_PORT_CMD; |
| 1123 | frame.edx.part.high = rpc->channel; |
| 1124 | frame.esi.word = rpc->cookie1; |
| 1125 | frame.edi.word = rpc->cookie2; |
| 1126 | |
| 1127 | vm_cmd(&frame); |
| 1128 | |
| 1129 | if ((frame.ecx.part.high & VM_RPC_REPLY_SUCCESS) == 0) { |
| 1130 | printf("vmware: get length failed, eax=%08x, ecx=%08x\n" , |
| 1131 | frame.eax.word, frame.ecx.word); |
| 1132 | return EIO; |
| 1133 | } |
| 1134 | if ((frame.ecx.part.high & VM_RPC_REPLY_DORECV) == 0) { |
| 1135 | *length = 0; |
| 1136 | *dataid = 0; |
| 1137 | } else { |
| 1138 | *length = frame.ebx.word; |
| 1139 | *dataid = frame.edx.part.high; |
| 1140 | } |
| 1141 | |
| 1142 | return 0; |
| 1143 | } |
| 1144 | |
| 1145 | static int |
| 1146 | vm_rpci_response_successful(struct vmt_softc *sc) |
| 1147 | { |
| 1148 | return (sc->sc_rpc_buf[0] == '1' && sc->sc_rpc_buf[1] == ' '); |
| 1149 | } |
| 1150 | |
| 1151 | static int |
| 1152 | vm_rpc_send_rpci_tx_buf(struct vmt_softc *sc, const uint8_t *buf, uint32_t length) |
| 1153 | { |
| 1154 | struct vm_rpc rpci; |
| 1155 | u_int32_t rlen; |
| 1156 | u_int16_t ack; |
| 1157 | int result = 0; |
| 1158 | |
| 1159 | if (vm_rpc_open(&rpci, VM_RPC_OPEN_RPCI) != 0) { |
| 1160 | device_printf(sc->sc_dev, "rpci channel open failed\n" ); |
| 1161 | return EIO; |
| 1162 | } |
| 1163 | |
| 1164 | if (vm_rpc_send(&rpci, sc->sc_rpc_buf, length) != 0) { |
| 1165 | device_printf(sc->sc_dev, "unable to send rpci command\n" ); |
| 1166 | result = EIO; |
| 1167 | goto out; |
| 1168 | } |
| 1169 | |
| 1170 | if (vm_rpc_get_length(&rpci, &rlen, &ack) != 0) { |
| 1171 | device_printf(sc->sc_dev, "failed to get length of rpci response data\n" ); |
| 1172 | result = EIO; |
| 1173 | goto out; |
| 1174 | } |
| 1175 | |
| 1176 | if (rlen > 0) { |
| 1177 | if (rlen >= VMT_RPC_BUFLEN) { |
| 1178 | rlen = VMT_RPC_BUFLEN - 1; |
| 1179 | } |
| 1180 | |
| 1181 | if (vm_rpc_get_data(&rpci, sc->sc_rpc_buf, rlen, ack) != 0) { |
| 1182 | device_printf(sc->sc_dev, "failed to get rpci response data\n" ); |
| 1183 | result = EIO; |
| 1184 | goto out; |
| 1185 | } |
| 1186 | } |
| 1187 | |
| 1188 | out: |
| 1189 | if (vm_rpc_close(&rpci) != 0) { |
| 1190 | device_printf(sc->sc_dev, "unable to close rpci channel\n" ); |
| 1191 | } |
| 1192 | |
| 1193 | return result; |
| 1194 | } |
| 1195 | |
| 1196 | static int |
| 1197 | vm_rpc_send_rpci_tx(struct vmt_softc *sc, const char *fmt, ...) |
| 1198 | { |
| 1199 | va_list args; |
| 1200 | int len; |
| 1201 | |
| 1202 | va_start(args, fmt); |
| 1203 | len = vsnprintf(sc->sc_rpc_buf, VMT_RPC_BUFLEN, fmt, args); |
| 1204 | va_end(args); |
| 1205 | |
| 1206 | if (len >= VMT_RPC_BUFLEN) { |
| 1207 | device_printf(sc->sc_dev, "rpci command didn't fit in buffer\n" ); |
| 1208 | return EIO; |
| 1209 | } |
| 1210 | |
| 1211 | return vm_rpc_send_rpci_tx_buf(sc, sc->sc_rpc_buf, len); |
| 1212 | } |
| 1213 | |
| 1214 | #if 0 |
| 1215 | struct vm_backdoor frame; |
| 1216 | |
| 1217 | memset(&frame, 0, sizeof(frame)); |
| 1218 | |
| 1219 | frame.eax.word = VM_MAGIC; |
| 1220 | frame.ecx.part.low = VM_CMD_GET_VERSION; |
| 1221 | frame.edx.part.low = VM_PORT_CMD; |
| 1222 | |
| 1223 | printf("\n" ); |
| 1224 | printf("eax 0x%08x\n" , frame.eax.word); |
| 1225 | printf("ebx 0x%08x\n" , frame.ebx.word); |
| 1226 | printf("ecx 0x%08x\n" , frame.ecx.word); |
| 1227 | printf("edx 0x%08x\n" , frame.edx.word); |
| 1228 | printf("ebp 0x%08x\n" , frame.ebp.word); |
| 1229 | printf("edi 0x%08x\n" , frame.edi.word); |
| 1230 | printf("esi 0x%08x\n" , frame.esi.word); |
| 1231 | |
| 1232 | vm_cmd(&frame); |
| 1233 | |
| 1234 | printf("-\n" ); |
| 1235 | printf("eax 0x%08x\n" , frame.eax.word); |
| 1236 | printf("ebx 0x%08x\n" , frame.ebx.word); |
| 1237 | printf("ecx 0x%08x\n" , frame.ecx.word); |
| 1238 | printf("edx 0x%08x\n" , frame.edx.word); |
| 1239 | printf("ebp 0x%08x\n" , frame.ebp.word); |
| 1240 | printf("edi 0x%08x\n" , frame.edi.word); |
| 1241 | printf("esi 0x%08x\n" , frame.esi.word); |
| 1242 | #endif |
| 1243 | |
| 1244 | /* |
| 1245 | * Notes on tracing backdoor activity in vmware-guestd: |
| 1246 | * |
| 1247 | * - Find the addresses of the inl / rep insb / rep outsb |
| 1248 | * instructions used to perform backdoor operations. |
| 1249 | * One way to do this is to disassemble vmware-guestd: |
| 1250 | * |
| 1251 | * $ objdump -S /emul/freebsd/sbin/vmware-guestd > vmware-guestd.S |
| 1252 | * |
| 1253 | * and search for '<tab>in ' in the resulting file. The rep insb and |
| 1254 | * rep outsb code is directly below that. |
| 1255 | * |
| 1256 | * - Run vmware-guestd under gdb, setting up breakpoints as follows: |
| 1257 | * (the addresses shown here are the ones from VMware-server-1.0.10-203137, |
| 1258 | * the last version that actually works in FreeBSD emulation on OpenBSD) |
| 1259 | * |
| 1260 | * break *0x805497b (address of 'in' instruction) |
| 1261 | * commands 1 |
| 1262 | * silent |
| 1263 | * echo INOUT\n |
| 1264 | * print/x $ecx |
| 1265 | * print/x $ebx |
| 1266 | * print/x $edx |
| 1267 | * continue |
| 1268 | * end |
| 1269 | * break *0x805497c (address of instruction after 'in') |
| 1270 | * commands 2 |
| 1271 | * silent |
| 1272 | * echo ===\n |
| 1273 | * print/x $ecx |
| 1274 | * print/x $ebx |
| 1275 | * print/x $edx |
| 1276 | * echo \n |
| 1277 | * continue |
| 1278 | * end |
| 1279 | * break *0x80549b7 (address of instruction before 'rep insb') |
| 1280 | * commands 3 |
| 1281 | * silent |
| 1282 | * set variable $inaddr = $edi |
| 1283 | * set variable $incount = $ecx |
| 1284 | * continue |
| 1285 | * end |
| 1286 | * break *0x80549ba (address of instruction after 'rep insb') |
| 1287 | * commands 4 |
| 1288 | * silent |
| 1289 | * echo IN\n |
| 1290 | * print $incount |
| 1291 | * x/s $inaddr |
| 1292 | * echo \n |
| 1293 | * continue |
| 1294 | * end |
| 1295 | * break *0x80549fb (address of instruction before 'rep outsb') |
| 1296 | * commands 5 |
| 1297 | * silent |
| 1298 | * echo OUT\n |
| 1299 | * print $ecx |
| 1300 | * x/s $esi |
| 1301 | * echo \n |
| 1302 | * continue |
| 1303 | * end |
| 1304 | * |
| 1305 | * This will produce a log of the backdoor operations, including the |
| 1306 | * data sent and received and the relevant register values. You can then |
| 1307 | * match the register values to the various constants in this file. |
| 1308 | */ |
| 1309 | |
| 1310 | MODULE(MODULE_CLASS_DRIVER, vmt, "sysmon_power,sysmon_taskq" ); |
| 1311 | |
| 1312 | #ifdef _MODULE |
| 1313 | #include "ioconf.c" |
| 1314 | #endif |
| 1315 | |
| 1316 | static int |
| 1317 | vmt_modcmd(modcmd_t cmd, void *aux) |
| 1318 | { |
| 1319 | int error = 0; |
| 1320 | |
| 1321 | switch (cmd) { |
| 1322 | case MODULE_CMD_INIT: |
| 1323 | #ifdef _MODULE |
| 1324 | error = config_init_component(cfdriver_ioconf_vmt, |
| 1325 | cfattach_ioconf_vmt, cfdata_ioconf_vmt); |
| 1326 | #endif |
| 1327 | break; |
| 1328 | case MODULE_CMD_FINI: |
| 1329 | #ifdef _MODULE |
| 1330 | error = config_fini_component(cfdriver_ioconf_vmt, |
| 1331 | cfattach_ioconf_vmt, cfdata_ioconf_vmt); |
| 1332 | #endif |
| 1333 | break; |
| 1334 | case MODULE_CMD_AUTOUNLOAD: |
| 1335 | error = EBUSY; |
| 1336 | break; |
| 1337 | default: |
| 1338 | error = ENOTTY; |
| 1339 | break; |
| 1340 | } |
| 1341 | |
| 1342 | return error; |
| 1343 | } |
| 1344 | |