1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved. 24 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved. 25 */ 26 27 #include <errno.h> 28 #include <fcntl.h> 29 #include <dirent.h> 30 #include <stddef.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <strings.h> 34 #include <unistd.h> 35 #include <thread.h> 36 #include <sys/auxv.h> 37 #include <sys/brand.h> 38 #include <sys/inttypes.h> 39 #include <sys/lwp.h> 40 #include <sys/syscall.h> 41 #include <sys/systm.h> 42 #include <sys/utsname.h> 43 #include <sys/sysconfig.h> 44 #include <sys/systeminfo.h> 45 #include <sys/zone.h> 46 #include <sys/stat.h> 47 #include <sys/mntent.h> 48 #include <sys/ctfs.h> 49 #include <sys/priv.h> 50 #include <sys/acctctl.h> 51 #include <libgen.h> 52 #include <bsm/audit.h> 53 #include <sys/crypto/ioctl.h> 54 #include <sys/fs/zfs.h> 55 #include <sys/zfs_ioctl.h> 56 #include <sys/ucontext.h> 57 #include <sys/mntio.h> 58 #include <sys/mnttab.h> 59 #include <sys/attr.h> 60 #include <sys/lofi.h> 61 #include <atomic.h> 62 #include <sys/acl.h> 63 #include <sys/socket.h> 64 65 #include <s10_brand.h> 66 #include <brand_misc.h> 67 #include <s10_misc.h> 68 #include <s10_signal.h> 69 70 /* 71 * See usr/src/lib/brand/shared/brand/common/brand_util.c for general 72 * emulation notes. 73 */ 74 75 static zoneid_t zoneid; 76 static boolean_t emul_global_zone = B_FALSE; 77 static s10_emul_bitmap_t emul_bitmap; 78 pid_t zone_init_pid; 79 80 /* 81 * S10_FEATURE_IS_PRESENT is a macro that helps facilitate conditional 82 * emulation. For each constant N defined in the s10_emulated_features 83 * enumeration in usr/src/uts/common/brand/solaris10/s10_brand.h, 84 * S10_FEATURE_IS_PRESENT(N) is true iff the feature/backport represented by N 85 * is present in the Solaris 10 image hosted within the zone. In other words, 86 * S10_FEATURE_IS_PRESENT(N) is true iff the file /usr/lib/brand/solaris10/M, 87 * where M is the enum value of N, was present in the zone when the zone booted. 88 * 89 * 90 * *** Sample Usage 91 * 92 * Suppose that you need to backport a fix to Solaris 10 and there is 93 * emulation in place for the fix. Suppose further that the emulation won't be 94 * needed if the fix is backported (i.e., if the fix is present in the hosted 95 * Solaris 10 environment, then the brand won't need the emulation). Then if 96 * you add a constant named "S10_FEATURE_X" to the end of the 97 * s10_emulated_features enumeration that represents the backported fix and 98 * S10_FEATURE_X evaluates to four, then you should create a file named 99 * /usr/lib/brand/solaris10/4 as part of your backport. Additionally, you 100 * should retain the aforementioned emulation but modify it so that it's 101 * performed only when S10_FEATURE_IS_PRESENT(S10_FEATURE_X) is false. Thus the 102 * emulation function should look something like the following: 103 * 104 * static int 105 * my_emul_function(sysret_t *rv, ...) 106 * { 107 * if (S10_FEATURE_IS_PRESENT(S10_FEATURE_X)) { 108 * // Don't emulate 109 * return (__systemcall(rv, ...)); 110 * } else { 111 * // Emulate whatever needs to be emulated when the 112 * // backport isn't present in the Solaris 10 image. 113 * } 114 * } 115 */ 116 #define S10_FEATURE_IS_PRESENT(s10_emulated_features_constant) \ 117 ((emul_bitmap[(s10_emulated_features_constant) >> 3] & \ 118 (1 << ((s10_emulated_features_constant) & 0x7))) != 0) 119 120 brand_sysent_table_t brand_sysent_table[]; 121 122 #define S10_UTS_RELEASE "5.10" 123 #define S10_UTS_VERSION "Generic_Virtual" 124 125 /* 126 * If the ioctl fd's major doesn't match "major", then pass through the 127 * ioctl, since it is not the expected device. major should be a 128 * pointer to a static dev_t initialized to -1, and devname should be 129 * the path of the device. 130 * 131 * Returns 1 if the ioctl was handled (in which case *err contains the 132 * error code), or 0 if it still needs handling. 133 */ 134 static int 135 passthru_otherdev_ioctl(dev_t *majordev, const char *devname, int *err, 136 sysret_t *rval, int fdes, int cmd, intptr_t arg) 137 { 138 struct stat sbuf; 139 140 if (*majordev == (dev_t)-1) { 141 if ((*err = __systemcall(rval, SYS_fstatat + 1024, 142 AT_FDCWD, devname, &sbuf, 0) != 0) != 0) 143 goto doioctl; 144 145 *majordev = major(sbuf.st_rdev); 146 } 147 148 if ((*err = __systemcall(rval, SYS_fstatat + 1024, fdes, 149 NULL, &sbuf, 0)) != 0) 150 goto doioctl; 151 152 if (major(sbuf.st_rdev) == *majordev) 153 return (0); 154 155 doioctl: 156 *err = (__systemcall(rval, SYS_ioctl + 1024, fdes, cmd, arg)); 157 return (1); 158 } 159 160 /* 161 * Figures out the PID of init for the zone. Also returns a boolean 162 * indicating whether this process currently has that pid: if so, 163 * then at this moment, we are init. 164 */ 165 static boolean_t 166 get_initpid_info(void) 167 { 168 pid_t pid; 169 sysret_t rval; 170 int err; 171 172 /* 173 * Determine the current process PID and the PID of the zone's init. 174 * We use care not to call getpid() here, because we're not supposed 175 * to call getpid() until after the program is fully linked-- the 176 * first call to getpid() is a signal from the linker to debuggers 177 * that linking has been completed. 178 */ 179 if ((err = __systemcall(&rval, SYS_brand, 180 B_S10_PIDINFO, &pid, &zone_init_pid)) != 0) { 181 brand_abort(err, "Failed to get init's pid"); 182 } 183 184 /* 185 * Note that we need to be cautious with the pid we get back-- 186 * it should not be stashed and used in place of getpid(), since 187 * we might fork(2). So we keep zone_init_pid and toss the pid 188 * we otherwise got. 189 */ 190 if (pid == zone_init_pid) 191 return (B_TRUE); 192 193 return (B_FALSE); 194 } 195 196 /* Free the thread-local storage provided by mntfs_get_mntentbuf(). */ 197 static void 198 mntfs_free_mntentbuf(void *arg) 199 { 200 struct mntentbuf *embufp = arg; 201 202 if (embufp == NULL) 203 return; 204 if (embufp->mbuf_emp) 205 free(embufp->mbuf_emp); 206 if (embufp->mbuf_buf) 207 free(embufp->mbuf_buf); 208 bzero(embufp, sizeof (struct mntentbuf)); 209 free(embufp); 210 } 211 212 /* Provide the thread-local storage required by mntfs_ioctl(). */ 213 static struct mntentbuf * 214 mntfs_get_mntentbuf(size_t size) 215 { 216 static mutex_t keylock; 217 static thread_key_t key; 218 static int once_per_keyname = 0; 219 void *tsd = NULL; 220 struct mntentbuf *embufp; 221 222 /* Create the key. */ 223 if (!once_per_keyname) { 224 (void) mutex_lock(&keylock); 225 if (!once_per_keyname) { 226 if (thr_keycreate(&key, mntfs_free_mntentbuf)) { 227 (void) mutex_unlock(&keylock); 228 return (NULL); 229 } else { 230 once_per_keyname++; 231 } 232 } 233 (void) mutex_unlock(&keylock); 234 } 235 236 /* 237 * The thread-specific datum for this key is the address of a struct 238 * mntentbuf. If this is the first time here then we allocate the struct 239 * and its contents, and associate its address with the thread; if there 240 * are any problems then we abort. 241 */ 242 if (thr_getspecific(key, &tsd)) 243 return (NULL); 244 if (tsd == NULL) { 245 if (!(embufp = calloc(1, sizeof (struct mntentbuf))) || 246 !(embufp->mbuf_emp = malloc(sizeof (struct extmnttab))) || 247 thr_setspecific(key, embufp)) { 248 mntfs_free_mntentbuf(embufp); 249 return (NULL); 250 } 251 } else { 252 embufp = tsd; 253 } 254 255 /* Return the buffer, resizing it if necessary. */ 256 if (size > embufp->mbuf_bufsize) { 257 if (embufp->mbuf_buf) 258 free(embufp->mbuf_buf); 259 if ((embufp->mbuf_buf = malloc(size)) == NULL) { 260 embufp->mbuf_bufsize = 0; 261 return (NULL); 262 } else { 263 embufp->mbuf_bufsize = size; 264 } 265 } 266 return (embufp); 267 } 268 269 /* 270 * The MNTIOC_GETMNTENT command in this release differs from that in early 271 * versions of Solaris 10. 272 * 273 * Previously, the command would copy a pointer to a struct extmnttab to an 274 * address provided as an argument. The pointer would be somewhere within a 275 * mapping already present within the user's address space. In addition, the 276 * text to which the struct's members pointed would also be within a 277 * pre-existing mapping. Now, the user is required to allocate memory for both 278 * the struct and the text buffer, and to pass the address of each within a 279 * struct mntentbuf. In order to conceal these details from a Solaris 10 client 280 * we allocate some thread-local storage in which to create the necessary data 281 * structures; this is static, thread-safe memory that will be cleaned up 282 * without the caller's intervention. 283 * 284 * MNTIOC_GETEXTMNTENT and MNTIOC_GETMNTANY are new in this release; they should 285 * not work for older clients. 286 */ 287 int 288 mntfs_ioctl(sysret_t *rval, int fdes, int cmd, intptr_t arg) 289 { 290 int err; 291 struct stat statbuf; 292 struct mntentbuf *embufp; 293 static size_t bufsize = MNT_LINE_MAX; 294 295 /* Do not emulate mntfs commands from up-to-date clients. */ 296 if (S10_FEATURE_IS_PRESENT(S10_FEATURE_ALTERED_MNTFS_IOCTL)) 297 return (__systemcall(rval, SYS_ioctl + 1024, fdes, cmd, arg)); 298 299 /* Do not emulate mntfs commands directed at other file systems. */ 300 if ((err = __systemcall(rval, SYS_fstatat + 1024, 301 fdes, NULL, &statbuf, 0)) != 0) 302 return (err); 303 if (strcmp(statbuf.st_fstype, MNTTYPE_MNTFS) != 0) 304 return (__systemcall(rval, SYS_ioctl + 1024, fdes, cmd, arg)); 305 306 if (cmd == MNTIOC_GETEXTMNTENT || cmd == MNTIOC_GETMNTANY) 307 return (EINVAL); 308 309 if ((embufp = mntfs_get_mntentbuf(bufsize)) == NULL) 310 return (ENOMEM); 311 312 /* 313 * MNTIOC_GETEXTMNTENT advances the file pointer once it has 314 * successfully copied out the result to the address provided. We 315 * therefore need to check the user-supplied address now since the 316 * one we'll be providing is guaranteed to work. 317 */ 318 if (brand_uucopy(&embufp->mbuf_emp, (void *)arg, sizeof (void *)) != 0) 319 return (EFAULT); 320 321 /* 322 * Keep retrying for as long as we fail for want of a large enough 323 * buffer. 324 */ 325 for (;;) { 326 if ((err = __systemcall(rval, SYS_ioctl + 1024, fdes, 327 MNTIOC_GETEXTMNTENT, embufp)) != 0) 328 return (err); 329 330 if (rval->sys_rval1 == MNTFS_TOOLONG) { 331 /* The buffer wasn't large enough. */ 332 (void) atomic_swap_ulong((unsigned long *)&bufsize, 333 2 * embufp->mbuf_bufsize); 334 if ((embufp = mntfs_get_mntentbuf(bufsize)) == NULL) 335 return (ENOMEM); 336 } else { 337 break; 338 } 339 } 340 341 if (brand_uucopy(&embufp->mbuf_emp, (void *)arg, sizeof (void *)) != 0) 342 return (EFAULT); 343 344 return (0); 345 } 346 347 /* 348 * Assign the structure member value from the s (source) structure to the 349 * d (dest) structure. 350 */ 351 #define struct_assign(d, s, val) (((d).val) = ((s).val)) 352 353 /* 354 * The CRYPTO_GET_FUNCTION_LIST parameter structure crypto_function_list_t 355 * changed between S10 and Nevada, so we have to emulate the old S10 356 * crypto_function_list_t structure when interposing on the ioctl syscall. 357 */ 358 typedef struct s10_crypto_function_list { 359 boolean_t fl_digest_init; 360 boolean_t fl_digest; 361 boolean_t fl_digest_update; 362 boolean_t fl_digest_key; 363 boolean_t fl_digest_final; 364 365 boolean_t fl_encrypt_init; 366 boolean_t fl_encrypt; 367 boolean_t fl_encrypt_update; 368 boolean_t fl_encrypt_final; 369 370 boolean_t fl_decrypt_init; 371 boolean_t fl_decrypt; 372 boolean_t fl_decrypt_update; 373 boolean_t fl_decrypt_final; 374 375 boolean_t fl_mac_init; 376 boolean_t fl_mac; 377 boolean_t fl_mac_update; 378 boolean_t fl_mac_final; 379 380 boolean_t fl_sign_init; 381 boolean_t fl_sign; 382 boolean_t fl_sign_update; 383 boolean_t fl_sign_final; 384 boolean_t fl_sign_recover_init; 385 boolean_t fl_sign_recover; 386 387 boolean_t fl_verify_init; 388 boolean_t fl_verify; 389 boolean_t fl_verify_update; 390 boolean_t fl_verify_final; 391 boolean_t fl_verify_recover_init; 392 boolean_t fl_verify_recover; 393 394 boolean_t fl_digest_encrypt_update; 395 boolean_t fl_decrypt_digest_update; 396 boolean_t fl_sign_encrypt_update; 397 boolean_t fl_decrypt_verify_update; 398 399 boolean_t fl_seed_random; 400 boolean_t fl_generate_random; 401 402 boolean_t fl_session_open; 403 boolean_t fl_session_close; 404 boolean_t fl_session_login; 405 boolean_t fl_session_logout; 406 407 boolean_t fl_object_create; 408 boolean_t fl_object_copy; 409 boolean_t fl_object_destroy; 410 boolean_t fl_object_get_size; 411 boolean_t fl_object_get_attribute_value; 412 boolean_t fl_object_set_attribute_value; 413 boolean_t fl_object_find_init; 414 boolean_t fl_object_find; 415 boolean_t fl_object_find_final; 416 417 boolean_t fl_key_generate; 418 boolean_t fl_key_generate_pair; 419 boolean_t fl_key_wrap; 420 boolean_t fl_key_unwrap; 421 boolean_t fl_key_derive; 422 423 boolean_t fl_init_token; 424 boolean_t fl_init_pin; 425 boolean_t fl_set_pin; 426 427 boolean_t prov_is_hash_limited; 428 uint32_t prov_hash_threshold; 429 uint32_t prov_hash_limit; 430 } s10_crypto_function_list_t; 431 432 typedef struct s10_crypto_get_function_list { 433 uint_t fl_return_value; 434 crypto_provider_id_t fl_provider_id; 435 s10_crypto_function_list_t fl_list; 436 } s10_crypto_get_function_list_t; 437 438 /* 439 * The structure returned by the CRYPTO_GET_FUNCTION_LIST ioctl on /dev/crypto 440 * increased in size due to: 441 * 6482533 Threshold for HW offload via PKCS11 interface 442 * between S10 and Nevada. This is a relatively simple process of filling 443 * in the S10 structure fields with the Nevada data. 444 * 445 * We stat the device to make sure that the ioctl is meant for /dev/crypto. 446 * 447 */ 448 static int 449 crypto_ioctl(sysret_t *rval, int fdes, int cmd, intptr_t arg) 450 { 451 int err; 452 s10_crypto_get_function_list_t s10_param; 453 crypto_get_function_list_t native_param; 454 static dev_t crypto_dev = (dev_t)-1; 455 456 if (passthru_otherdev_ioctl(&crypto_dev, "/dev/crypto", &err, 457 rval, fdes, cmd, arg) == 1) 458 return (err); 459 460 if (brand_uucopy((const void *)arg, &s10_param, sizeof (s10_param)) 461 != 0) 462 return (EFAULT); 463 struct_assign(native_param, s10_param, fl_provider_id); 464 if ((err = __systemcall(rval, SYS_ioctl + 1024, fdes, cmd, 465 &native_param)) != 0) 466 return (err); 467 468 struct_assign(s10_param, native_param, fl_return_value); 469 struct_assign(s10_param, native_param, fl_provider_id); 470 471 struct_assign(s10_param, native_param, fl_list.fl_digest_init); 472 struct_assign(s10_param, native_param, fl_list.fl_digest); 473 struct_assign(s10_param, native_param, fl_list.fl_digest_update); 474 struct_assign(s10_param, native_param, fl_list.fl_digest_key); 475 struct_assign(s10_param, native_param, fl_list.fl_digest_final); 476 477 struct_assign(s10_param, native_param, fl_list.fl_encrypt_init); 478 struct_assign(s10_param, native_param, fl_list.fl_encrypt); 479 struct_assign(s10_param, native_param, fl_list.fl_encrypt_update); 480 struct_assign(s10_param, native_param, fl_list.fl_encrypt_final); 481 482 struct_assign(s10_param, native_param, fl_list.fl_decrypt_init); 483 struct_assign(s10_param, native_param, fl_list.fl_decrypt); 484 struct_assign(s10_param, native_param, fl_list.fl_decrypt_update); 485 struct_assign(s10_param, native_param, fl_list.fl_decrypt_final); 486 487 struct_assign(s10_param, native_param, fl_list.fl_mac_init); 488 struct_assign(s10_param, native_param, fl_list.fl_mac); 489 struct_assign(s10_param, native_param, fl_list.fl_mac_update); 490 struct_assign(s10_param, native_param, fl_list.fl_mac_final); 491 492 struct_assign(s10_param, native_param, fl_list.fl_sign_init); 493 struct_assign(s10_param, native_param, fl_list.fl_sign); 494 struct_assign(s10_param, native_param, fl_list.fl_sign_update); 495 struct_assign(s10_param, native_param, fl_list.fl_sign_final); 496 struct_assign(s10_param, native_param, fl_list.fl_sign_recover_init); 497 struct_assign(s10_param, native_param, fl_list.fl_sign_recover); 498 499 struct_assign(s10_param, native_param, fl_list.fl_verify_init); 500 struct_assign(s10_param, native_param, fl_list.fl_verify); 501 struct_assign(s10_param, native_param, fl_list.fl_verify_update); 502 struct_assign(s10_param, native_param, fl_list.fl_verify_final); 503 struct_assign(s10_param, native_param, fl_list.fl_verify_recover_init); 504 struct_assign(s10_param, native_param, fl_list.fl_verify_recover); 505 506 struct_assign(s10_param, native_param, 507 fl_list.fl_digest_encrypt_update); 508 struct_assign(s10_param, native_param, 509 fl_list.fl_decrypt_digest_update); 510 struct_assign(s10_param, native_param, fl_list.fl_sign_encrypt_update); 511 struct_assign(s10_param, native_param, 512 fl_list.fl_decrypt_verify_update); 513 514 struct_assign(s10_param, native_param, fl_list.fl_seed_random); 515 struct_assign(s10_param, native_param, fl_list.fl_generate_random); 516 517 struct_assign(s10_param, native_param, fl_list.fl_session_open); 518 struct_assign(s10_param, native_param, fl_list.fl_session_close); 519 struct_assign(s10_param, native_param, fl_list.fl_session_login); 520 struct_assign(s10_param, native_param, fl_list.fl_session_logout); 521 522 struct_assign(s10_param, native_param, fl_list.fl_object_create); 523 struct_assign(s10_param, native_param, fl_list.fl_object_copy); 524 struct_assign(s10_param, native_param, fl_list.fl_object_destroy); 525 struct_assign(s10_param, native_param, fl_list.fl_object_get_size); 526 struct_assign(s10_param, native_param, 527 fl_list.fl_object_get_attribute_value); 528 struct_assign(s10_param, native_param, 529 fl_list.fl_object_set_attribute_value); 530 struct_assign(s10_param, native_param, fl_list.fl_object_find_init); 531 struct_assign(s10_param, native_param, fl_list.fl_object_find); 532 struct_assign(s10_param, native_param, fl_list.fl_object_find_final); 533 534 struct_assign(s10_param, native_param, fl_list.fl_key_generate); 535 struct_assign(s10_param, native_param, fl_list.fl_key_generate_pair); 536 struct_assign(s10_param, native_param, fl_list.fl_key_wrap); 537 struct_assign(s10_param, native_param, fl_list.fl_key_unwrap); 538 struct_assign(s10_param, native_param, fl_list.fl_key_derive); 539 540 struct_assign(s10_param, native_param, fl_list.fl_init_token); 541 struct_assign(s10_param, native_param, fl_list.fl_init_pin); 542 struct_assign(s10_param, native_param, fl_list.fl_set_pin); 543 544 struct_assign(s10_param, native_param, fl_list.prov_is_hash_limited); 545 struct_assign(s10_param, native_param, fl_list.prov_hash_threshold); 546 struct_assign(s10_param, native_param, fl_list.prov_hash_limit); 547 548 return (brand_uucopy(&s10_param, (void *)arg, sizeof (s10_param))); 549 } 550 551 /* 552 * The process contract CT_TGET and CT_TSET parameter structure ct_param_t 553 * changed between S10 and Nevada, so we have to emulate the old S10 554 * ct_param_t structure when interposing on the ioctl syscall. 555 */ 556 typedef struct s10_ct_param { 557 uint32_t ctpm_id; 558 uint32_t ctpm_pad; 559 uint64_t ctpm_value; 560 } s10_ct_param_t; 561 562 /* 563 * We have to emulate process contract ioctls for init(1M) because the 564 * ioctl parameter structure changed between S10 and Nevada. This is 565 * a relatively simple process of filling Nevada structure fields, 566 * shuffling values, and initiating a native system call. 567 * 568 * For now, we'll assume that all consumers of CT_TGET and CT_TSET will 569 * need emulation. We'll issue a stat to make sure that the ioctl 570 * is meant for the contract file system. 571 * 572 */ 573 static int 574 ctfs_ioctl(sysret_t *rval, int fdes, int cmd, intptr_t arg) 575 { 576 int err; 577 s10_ct_param_t s10param; 578 ct_param_t param; 579 struct stat statbuf; 580 581 if ((err = __systemcall(rval, SYS_fstatat + 1024, 582 fdes, NULL, &statbuf, 0)) != 0) 583 return (err); 584 if (strcmp(statbuf.st_fstype, MNTTYPE_CTFS) != 0) 585 return (__systemcall(rval, SYS_ioctl + 1024, fdes, cmd, arg)); 586 587 if (brand_uucopy((const void *)arg, &s10param, sizeof (s10param)) != 0) 588 return (EFAULT); 589 param.ctpm_id = s10param.ctpm_id; 590 param.ctpm_size = sizeof (uint64_t); 591 param.ctpm_value = &s10param.ctpm_value; 592 if ((err = __systemcall(rval, SYS_ioctl + 1024, fdes, cmd, ¶m)) 593 != 0) 594 return (err); 595 596 if (cmd == CT_TGET) 597 return (brand_uucopy(&s10param, (void *)arg, 598 sizeof (s10param))); 599 600 return (0); 601 } 602 603 /* 604 * ZFS ioctls have changed in each Solaris 10 (S10) release as well as in 605 * Solaris Next. The brand wraps ZFS commands so that the native commands 606 * are used, but we want to be sure no command sneaks in that uses ZFS 607 * without our knowledge. We'll abort the process if we see a ZFS ioctl. 608 */ 609 static int 610 zfs_ioctl(sysret_t *rval, int fdes, int cmd, intptr_t arg) 611 { 612 static dev_t zfs_dev = (dev_t)-1; 613 int err; 614 615 if (passthru_otherdev_ioctl(&zfs_dev, ZFS_DEV, &err, 616 rval, fdes, cmd, arg) == 1) 617 return (err); 618 619 brand_abort(0, "ZFS ioctl!"); 620 /*NOTREACHED*/ 621 return (0); 622 } 623 624 struct s10_lofi_ioctl { 625 uint32_t li_minor; 626 boolean_t li_force; 627 char li_filename[MAXPATHLEN + 1]; 628 }; 629 630 static int 631 lofi_ioctl(sysret_t *rval, int fdes, int cmd, intptr_t arg) 632 { 633 static dev_t lofi_dev = (dev_t)-1; 634 struct s10_lofi_ioctl s10_param; 635 struct lofi_ioctl native_param; 636 int err; 637 638 if (passthru_otherdev_ioctl(&lofi_dev, "/dev/lofictl", &err, 639 rval, fdes, cmd, arg) == 1) 640 return (err); 641 642 if (brand_uucopy((const void *)arg, &s10_param, 643 sizeof (s10_param)) != 0) 644 return (EFAULT); 645 646 /* 647 * Somewhat weirdly, EIO is what the S10 lofi driver would 648 * return for unrecognised cmds. 649 */ 650 if (cmd >= LOFI_CHECK_COMPRESSED) 651 return (EIO); 652 653 bzero(&native_param, sizeof (native_param)); 654 655 struct_assign(native_param, s10_param, li_minor); 656 struct_assign(native_param, s10_param, li_force); 657 658 /* 659 * Careful here, this has changed from [MAXPATHLEN + 1] to 660 * [MAXPATHLEN]. 661 */ 662 bcopy(s10_param.li_filename, native_param.li_filename, 663 sizeof (native_param.li_filename)); 664 native_param.li_filename[MAXPATHLEN - 1] = '\0'; 665 666 err = __systemcall(rval, SYS_ioctl + 1024, fdes, cmd, &native_param); 667 668 struct_assign(s10_param, native_param, li_minor); 669 /* li_force is input-only */ 670 671 bcopy(native_param.li_filename, s10_param.li_filename, 672 sizeof (native_param.li_filename)); 673 674 (void) brand_uucopy(&s10_param, (void *)arg, sizeof (s10_param)); 675 return (err); 676 } 677 678 int 679 s10_ioctl(sysret_t *rval, int fdes, int cmd, intptr_t arg) 680 { 681 switch (cmd) { 682 case CRYPTO_GET_FUNCTION_LIST: 683 return (crypto_ioctl(rval, fdes, cmd, arg)); 684 case CT_TGET: 685 /*FALLTHRU*/ 686 case CT_TSET: 687 return (ctfs_ioctl(rval, fdes, cmd, arg)); 688 case MNTIOC_GETMNTENT: 689 /*FALLTHRU*/ 690 case MNTIOC_GETEXTMNTENT: 691 /*FALLTHRU*/ 692 case MNTIOC_GETMNTANY: 693 return (mntfs_ioctl(rval, fdes, cmd, arg)); 694 } 695 696 switch (cmd & ~0xff) { 697 case ZFS_IOC: 698 return (zfs_ioctl(rval, fdes, cmd, arg)); 699 700 case LOFI_IOC_BASE: 701 return (lofi_ioctl(rval, fdes, cmd, arg)); 702 703 default: 704 break; 705 } 706 707 return (__systemcall(rval, SYS_ioctl + 1024, fdes, cmd, arg)); 708 } 709 710 /* 711 * Unfortunately, pwrite()'s behavior differs between S10 and Nevada when 712 * applied to files opened with O_APPEND. The offset argument is ignored and 713 * the buffer is appended to the target file in S10, whereas the current file 714 * position is ignored in Nevada (i.e., pwrite() acts as though the target file 715 * wasn't opened with O_APPEND). This is a result of the fix for CR 6655660 716 * (pwrite() must ignore the O_APPEND/FAPPEND flag). 717 * 718 * We emulate the old S10 pwrite() behavior by checking whether the target file 719 * was opened with O_APPEND. If it was, then invoke the write() system call 720 * instead of pwrite(); otherwise, invoke the pwrite() system call as usual. 721 */ 722 static int 723 s10_pwrite(sysret_t *rval, int fd, const void *bufferp, size_t num_bytes, 724 off_t offset) 725 { 726 int err; 727 728 if ((err = __systemcall(rval, SYS_fcntl + 1024, fd, F_GETFL)) != 0) 729 return (err); 730 if (rval->sys_rval1 & O_APPEND) 731 return (__systemcall(rval, SYS_write + 1024, fd, bufferp, 732 num_bytes)); 733 return (__systemcall(rval, SYS_pwrite + 1024, fd, bufferp, num_bytes, 734 offset)); 735 } 736 737 #if !defined(_LP64) 738 /* 739 * This is the large file version of the pwrite() system call for 32-bit 740 * processes. This exists for the same reason that s10_pwrite() exists; see 741 * the comment above s10_pwrite(). 742 */ 743 static int 744 s10_pwrite64(sysret_t *rval, int fd, const void *bufferp, size32_t num_bytes, 745 uint32_t offset_1, uint32_t offset_2) 746 { 747 int err; 748 749 if ((err = __systemcall(rval, SYS_fcntl + 1024, fd, F_GETFL)) != 0) 750 return (err); 751 if (rval->sys_rval1 & O_APPEND) 752 return (__systemcall(rval, SYS_write + 1024, fd, bufferp, 753 num_bytes)); 754 return (__systemcall(rval, SYS_pwrite64 + 1024, fd, bufferp, 755 num_bytes, offset_1, offset_2)); 756 } 757 #endif /* !_LP64 */ 758 759 /* 760 * These are convenience macros that s10_getdents_common() uses. Both treat 761 * their arguments, which should be character pointers, as dirent pointers or 762 * dirent64 pointers and yield their d_name and d_reclen fields. These 763 * macros shouldn't be used outside of s10_getdents_common(). 764 */ 765 #define dirent_name(charptr) ((charptr) + name_offset) 766 #define dirent_reclen(charptr) \ 767 (*(unsigned short *)(uintptr_t)((charptr) + reclen_offset)) 768 769 /* 770 * This function contains code that is common to both s10_getdents() and 771 * s10_getdents64(). See the comment above s10_getdents() for details. 772 * 773 * rval, fd, buf, and nbyte should be passed unmodified from s10_getdents() 774 * and s10_getdents64(). getdents_syscall_id should be either SYS_getdents 775 * or SYS_getdents64. name_offset should be the the byte offset of 776 * the d_name field in the dirent structures passed to the kernel via the 777 * syscall represented by getdents_syscall_id. reclen_offset should be 778 * the byte offset of the d_reclen field in the aforementioned dirent 779 * structures. 780 */ 781 static int 782 s10_getdents_common(sysret_t *rval, int fd, char *buf, size_t nbyte, 783 int getdents_syscall_id, size_t name_offset, size_t reclen_offset) 784 { 785 int err; 786 size_t buf_size; 787 char *local_buf; 788 char *buf_current; 789 790 /* 791 * Use a special brand operation, B_S10_ISFDXATTRDIR, to determine 792 * whether the specified file descriptor refers to an extended file 793 * attribute directory. If it doesn't, then SYS_getdents won't 794 * reveal extended file attributes, in which case we can simply 795 * hand the syscall to the native kernel. 796 */ 797 if ((err = __systemcall(rval, SYS_brand + 1024, B_S10_ISFDXATTRDIR, 798 fd)) != 0) 799 return (err); 800 if (rval->sys_rval1 == 0) 801 return (__systemcall(rval, getdents_syscall_id + 1024, fd, buf, 802 nbyte)); 803 804 /* 805 * The file descriptor refers to an extended file attributes directory. 806 * We need to create a dirent buffer that's as large as buf into which 807 * the native SYS_getdents will store the special extended file 808 * attribute directory's entries. We can't dereference buf because 809 * it might be an invalid pointer! 810 */ 811 if (nbyte > MAXGETDENTS_SIZE) 812 nbyte = MAXGETDENTS_SIZE; 813 local_buf = (char *)malloc(nbyte); 814 if (local_buf == NULL) { 815 /* 816 * getdents(2) doesn't return an error code indicating a memory 817 * allocation error and it doesn't make sense to return any of 818 * its documented error codes for a malloc(3C) failure. We'll 819 * use ENOMEM even though getdents(2) doesn't use it because it 820 * best describes the failure. 821 */ 822 (void) B_TRUSS_POINT_3(rval, getdents_syscall_id, ENOMEM, fd, 823 buf, nbyte); 824 rval->sys_rval1 = -1; 825 rval->sys_rval2 = 0; 826 return (EIO); 827 } 828 829 /* 830 * Issue a native SYS_getdents syscall but use our local dirent buffer 831 * instead of buf. This will allow us to examine the returned dirent 832 * structures immediately and copy them to buf later. That way the 833 * calling process won't be able to see the dirent structures until 834 * we finish examining them. 835 */ 836 if ((err = __systemcall(rval, getdents_syscall_id + 1024, fd, local_buf, 837 nbyte)) != 0) { 838 free(local_buf); 839 return (err); 840 } 841 buf_size = rval->sys_rval1; 842 if (buf_size == 0) { 843 free(local_buf); 844 return (0); 845 } 846 847 /* 848 * Look for SUNWattr_ro (VIEW_READONLY) and SUNWattr_rw 849 * (VIEW_READWRITE) in the directory entries and remove them 850 * from the dirent buffer. 851 */ 852 for (buf_current = local_buf; 853 (size_t)(buf_current - local_buf) < buf_size; /* cstyle */) { 854 if (strcmp(dirent_name(buf_current), VIEW_READONLY) != 0 && 855 strcmp(dirent_name(buf_current), VIEW_READWRITE) != 0) { 856 /* 857 * The dirent refers to an attribute that should 858 * be visible to Solaris 10 processes. Keep it 859 * and examine the next entry in the buffer. 860 */ 861 buf_current += dirent_reclen(buf_current); 862 } else { 863 /* 864 * We found either SUNWattr_ro (VIEW_READONLY) 865 * or SUNWattr_rw (VIEW_READWRITE). Remove it 866 * from the dirent buffer by decrementing 867 * buf_size by the size of the entry and 868 * overwriting the entry with the remaining 869 * entries. 870 */ 871 buf_size -= dirent_reclen(buf_current); 872 (void) memmove(buf_current, buf_current + 873 dirent_reclen(buf_current), buf_size - 874 (size_t)(buf_current - local_buf)); 875 } 876 } 877 878 /* 879 * Copy local_buf into buf so that the calling process can see 880 * the results. 881 */ 882 if ((err = brand_uucopy(local_buf, buf, buf_size)) != 0) { 883 free(local_buf); 884 rval->sys_rval1 = -1; 885 rval->sys_rval2 = 0; 886 return (err); 887 } 888 rval->sys_rval1 = buf_size; 889 free(local_buf); 890 return (0); 891 } 892 893 /* 894 * Solaris Next added two special extended file attributes, SUNWattr_ro and 895 * SUNWattr_rw, which are called "extended system attributes". They have 896 * special semantics (e.g., a process cannot unlink SUNWattr_ro) and should 897 * not appear in solaris10-branded zones because no Solaris 10 applications, 898 * including system commands such as tar(1), are coded to correctly handle these 899 * special attributes. 900 * 901 * This emulation function solves the aforementioned problem by emulating 902 * the getdents(2) syscall and filtering both system attributes out of resulting 903 * directory entry lists. The emulation function only filters results when 904 * the given file descriptor refers to an extended file attribute directory. 905 * Filtering getdents(2) results is expensive because it requires dynamic 906 * memory allocation; however, the performance cost is tolerable because 907 * we don't expect Solaris 10 processes to frequently examine extended file 908 * attribute directories. 909 * 910 * The brand's emulation library needs two getdents(2) emulation functions 911 * because getdents(2) comes in two flavors: non-largefile-aware getdents(2) 912 * and largefile-aware getdents64(2). s10_getdents() handles the non-largefile- 913 * aware case for 32-bit processes and all getdents(2) syscalls for 64-bit 914 * processes (64-bit processes use largefile-aware interfaces by default). 915 * See s10_getdents64() below for the largefile-aware getdents64(2) emulation 916 * function for 32-bit processes. 917 */ 918 static int 919 s10_getdents(sysret_t *rval, int fd, struct dirent *buf, size_t nbyte) 920 { 921 return (s10_getdents_common(rval, fd, (char *)buf, nbyte, SYS_getdents, 922 offsetof(struct dirent, d_name), 923 offsetof(struct dirent, d_reclen))); 924 } 925 926 #ifndef _LP64 927 /* 928 * This is the largefile-aware version of getdents(2) for 32-bit processes. 929 * This exists for the same reason that s10_getdents() exists. See the comment 930 * above s10_getdents(). 931 */ 932 static int 933 s10_getdents64(sysret_t *rval, int fd, struct dirent64 *buf, size_t nbyte) 934 { 935 return (s10_getdents_common(rval, fd, (char *)buf, nbyte, 936 SYS_getdents64, offsetof(struct dirent64, d_name), 937 offsetof(struct dirent64, d_reclen))); 938 } 939 #endif /* !_LP64 */ 940 941 #define S10_TRIVIAL_ACL_CNT 6 942 #define NATIVE_TRIVIAL_ACL_CNT 3 943 944 /* 945 * Check if the ACL qualifies as a trivial ACL based on the native 946 * interpretation. 947 */ 948 static boolean_t 949 has_trivial_native_acl(int cmd, int cnt, const char *fname, int fd) 950 { 951 int i, err; 952 sysret_t rval; 953 ace_t buf[NATIVE_TRIVIAL_ACL_CNT]; 954 955 if (fname != NULL) 956 err = __systemcall(&rval, SYS_pathconf + 1024, fname, 957 _PC_ACL_ENABLED); 958 else 959 err = __systemcall(&rval, SYS_fpathconf + 1024, fd, 960 _PC_ACL_ENABLED); 961 if (err != 0 || rval.sys_rval1 != _ACL_ACE_ENABLED) 962 return (B_FALSE); 963 964 /* 965 * If we just got the ACL cnt, we don't need to get it again, its 966 * passed in as the cnt arg. 967 */ 968 if (cmd != ACE_GETACLCNT) { 969 if (fname != NULL) { 970 if (__systemcall(&rval, SYS_acl + 1024, fname, 971 ACE_GETACLCNT, 0, NULL) != 0) 972 return (B_FALSE); 973 } else { 974 if (__systemcall(&rval, SYS_facl + 1024, fd, 975 ACE_GETACLCNT, 0, NULL) != 0) 976 return (B_FALSE); 977 } 978 cnt = rval.sys_rval1; 979 } 980 981 if (cnt != NATIVE_TRIVIAL_ACL_CNT) 982 return (B_FALSE); 983 984 if (fname != NULL) { 985 if (__systemcall(&rval, SYS_acl + 1024, fname, ACE_GETACL, cnt, 986 buf) != 0) 987 return (B_FALSE); 988 } else { 989 if (__systemcall(&rval, SYS_facl + 1024, fd, ACE_GETACL, cnt, 990 buf) != 0) 991 return (B_FALSE); 992 } 993 994 /* 995 * The following is based on the logic from the native OS 996 * ace_trivial_common() to determine if the native ACL is trivial. 997 */ 998 for (i = 0; i < cnt; i++) { 999 switch (buf[i].a_flags & ACE_TYPE_FLAGS) { 1000 case ACE_OWNER: 1001 case ACE_GROUP|ACE_IDENTIFIER_GROUP: 1002 case ACE_EVERYONE: 1003 break; 1004 default: 1005 return (B_FALSE); 1006 } 1007 1008 if (buf[i].a_flags & (ACE_FILE_INHERIT_ACE| 1009 ACE_DIRECTORY_INHERIT_ACE|ACE_NO_PROPAGATE_INHERIT_ACE| 1010 ACE_INHERIT_ONLY_ACE)) 1011 return (B_FALSE); 1012 1013 /* 1014 * Special check for some special bits 1015 * 1016 * Don't allow anybody to deny reading basic 1017 * attributes or a files ACL. 1018 */ 1019 if (buf[i].a_access_mask & (ACE_READ_ACL|ACE_READ_ATTRIBUTES) && 1020 buf[i].a_type == ACE_ACCESS_DENIED_ACE_TYPE) 1021 return (B_FALSE); 1022 1023 /* 1024 * Delete permissions are never set by default 1025 */ 1026 if (buf[i].a_access_mask & (ACE_DELETE|ACE_DELETE_CHILD)) 1027 return (B_FALSE); 1028 /* 1029 * only allow owner@ to have 1030 * write_acl/write_owner/write_attributes/write_xattr/ 1031 */ 1032 if (buf[i].a_type == ACE_ACCESS_ALLOWED_ACE_TYPE && 1033 (!(buf[i].a_flags & ACE_OWNER) && (buf[i].a_access_mask & 1034 (ACE_WRITE_OWNER|ACE_WRITE_ACL| ACE_WRITE_ATTRIBUTES| 1035 ACE_WRITE_NAMED_ATTRS)))) 1036 return (B_FALSE); 1037 1038 } 1039 1040 return (B_TRUE); 1041 } 1042 1043 /* 1044 * The following logic is based on the S10 adjust_ace_pair_common() code. 1045 */ 1046 static void 1047 s10_adjust_ace_mask(void *pair, size_t access_off, size_t pairsize, mode_t mode) 1048 { 1049 char *datap = (char *)pair; 1050 uint32_t *amask0 = (uint32_t *)(uintptr_t)(datap + access_off); 1051 uint32_t *amask1 = (uint32_t *)(uintptr_t)(datap + pairsize + 1052 access_off); 1053 1054 if (mode & S_IROTH) 1055 *amask1 |= ACE_READ_DATA; 1056 else 1057 *amask0 |= ACE_READ_DATA; 1058 if (mode & S_IWOTH) 1059 *amask1 |= ACE_WRITE_DATA|ACE_APPEND_DATA; 1060 else 1061 *amask0 |= ACE_WRITE_DATA|ACE_APPEND_DATA; 1062 if (mode & S_IXOTH) 1063 *amask1 |= ACE_EXECUTE; 1064 else 1065 *amask0 |= ACE_EXECUTE; 1066 } 1067 1068 /* 1069 * Construct a trivial S10 style ACL. 1070 */ 1071 static int 1072 make_trivial_s10_acl(const char *fname, int fd, ace_t *bp) 1073 { 1074 int err; 1075 sysret_t rval; 1076 struct stat64 buf; 1077 ace_t trivial_s10_acl[] = { 1078 {(uint_t)-1, 0, ACE_OWNER, ACE_ACCESS_DENIED_ACE_TYPE}, 1079 {(uint_t)-1, ACE_WRITE_ACL|ACE_WRITE_OWNER|ACE_WRITE_ATTRIBUTES| 1080 ACE_WRITE_NAMED_ATTRS, ACE_OWNER, 1081 ACE_ACCESS_ALLOWED_ACE_TYPE}, 1082 {(uint_t)-1, 0, ACE_GROUP|ACE_IDENTIFIER_GROUP, 1083 ACE_ACCESS_DENIED_ACE_TYPE}, 1084 {(uint_t)-1, 0, ACE_GROUP|ACE_IDENTIFIER_GROUP, 1085 ACE_ACCESS_ALLOWED_ACE_TYPE}, 1086 {(uint_t)-1, ACE_WRITE_ACL|ACE_WRITE_OWNER|ACE_WRITE_ATTRIBUTES| 1087 ACE_WRITE_NAMED_ATTRS, ACE_EVERYONE, 1088 ACE_ACCESS_DENIED_ACE_TYPE}, 1089 {(uint_t)-1, ACE_READ_ACL|ACE_READ_ATTRIBUTES| 1090 ACE_READ_NAMED_ATTRS|ACE_SYNCHRONIZE, ACE_EVERYONE, 1091 ACE_ACCESS_ALLOWED_ACE_TYPE} 1092 }; 1093 1094 if (fname != NULL) { 1095 if ((err = __systemcall(&rval, SYS_fstatat64 + 1024, AT_FDCWD, 1096 fname, &buf, 0)) != 0) 1097 return (err); 1098 } else { 1099 if ((err = __systemcall(&rval, SYS_fstatat64 + 1024, fd, 1100 NULL, &buf, 0)) != 0) 1101 return (err); 1102 } 1103 1104 s10_adjust_ace_mask(&trivial_s10_acl[0], offsetof(ace_t, a_access_mask), 1105 sizeof (ace_t), (buf.st_mode & 0700) >> 6); 1106 s10_adjust_ace_mask(&trivial_s10_acl[2], offsetof(ace_t, a_access_mask), 1107 sizeof (ace_t), (buf.st_mode & 0070) >> 3); 1108 s10_adjust_ace_mask(&trivial_s10_acl[4], offsetof(ace_t, a_access_mask), 1109 sizeof (ace_t), buf.st_mode & 0007); 1110 1111 if (brand_uucopy(&trivial_s10_acl, bp, sizeof (trivial_s10_acl)) != 0) 1112 return (EFAULT); 1113 1114 return (0); 1115 } 1116 1117 /* 1118 * The definition of a trivial ace-style ACL (used by ZFS and NFSv4) has been 1119 * simplified since S10. Instead of 6 entries on a trivial S10 ACE ACL we now 1120 * have 3 streamlined entries. The new, simpler trivial style confuses S10 1121 * commands such as 'ls -v' or 'cp -p' which don't see the expected S10 trivial 1122 * ACL entries and thus assume that there is a complex ACL on the file. 1123 * 1124 * See: PSARC/2010/029 Improved ACL interoperability 1125 * 1126 * Note that the trival ACL detection code is implemented in acl_trival() in 1127 * lib/libsec/common/aclutils.c. It always uses the acl() syscall (not the 1128 * facl syscall) to determine if an ACL is trivial. However, we emulate both 1129 * acl() and facl() so that the two provide consistent results. 1130 * 1131 * We don't currently try to emulate setting of ACLs since the primary 1132 * consumer of this feature is SMB or NFSv4 servers, neither of which are 1133 * supported in solaris10-branded zones. If ACLs are used they must be set on 1134 * files using the native OS interpretation. 1135 */ 1136 int 1137 s10_acl(sysret_t *rval, const char *fname, int cmd, int nentries, void *aclbufp) 1138 { 1139 int res; 1140 1141 res = __systemcall(rval, SYS_acl + 1024, fname, cmd, nentries, aclbufp); 1142 1143 switch (cmd) { 1144 case ACE_GETACLCNT: 1145 if (res == 0 && has_trivial_native_acl(ACE_GETACLCNT, 1146 rval->sys_rval1, fname, 0)) { 1147 rval->sys_rval1 = S10_TRIVIAL_ACL_CNT; 1148 } 1149 break; 1150 case ACE_GETACL: 1151 if (res == 0 && 1152 has_trivial_native_acl(ACE_GETACL, 0, fname, 0) && 1153 nentries >= S10_TRIVIAL_ACL_CNT) { 1154 res = make_trivial_s10_acl(fname, 0, aclbufp); 1155 rval->sys_rval1 = S10_TRIVIAL_ACL_CNT; 1156 } 1157 break; 1158 } 1159 1160 return (res); 1161 } 1162 1163 int 1164 s10_facl(sysret_t *rval, int fdes, int cmd, int nentries, void *aclbufp) 1165 { 1166 int res; 1167 1168 res = __systemcall(rval, SYS_facl + 1024, fdes, cmd, nentries, aclbufp); 1169 1170 switch (cmd) { 1171 case ACE_GETACLCNT: 1172 if (res == 0 && has_trivial_native_acl(ACE_GETACLCNT, 1173 rval->sys_rval1, NULL, fdes)) { 1174 rval->sys_rval1 = S10_TRIVIAL_ACL_CNT; 1175 } 1176 break; 1177 case ACE_GETACL: 1178 if (res == 0 && 1179 has_trivial_native_acl(ACE_GETACL, 0, NULL, fdes) && 1180 nentries >= S10_TRIVIAL_ACL_CNT) { 1181 res = make_trivial_s10_acl(NULL, fdes, aclbufp); 1182 rval->sys_rval1 = S10_TRIVIAL_ACL_CNT; 1183 } 1184 break; 1185 } 1186 1187 return (res); 1188 } 1189 1190 #define S10_AC_PROC (0x1 << 28) 1191 #define S10_AC_TASK (0x2 << 28) 1192 #define S10_AC_FLOW (0x4 << 28) 1193 #define S10_AC_MODE(x) ((x) & 0xf0000000) 1194 #define S10_AC_OPTION(x) ((x) & 0x0fffffff) 1195 1196 /* 1197 * The mode shift, mode mask and option mask for acctctl have changed. The 1198 * mode is currently the top full byte and the option is the lower 3 full bytes. 1199 */ 1200 int 1201 s10_acctctl(sysret_t *rval, int cmd, void *buf, size_t bufsz) 1202 { 1203 int mode = S10_AC_MODE(cmd); 1204 int option = S10_AC_OPTION(cmd); 1205 1206 switch (mode) { 1207 case S10_AC_PROC: 1208 mode = AC_PROC; 1209 break; 1210 case S10_AC_TASK: 1211 mode = AC_TASK; 1212 break; 1213 case S10_AC_FLOW: 1214 mode = AC_FLOW; 1215 break; 1216 default: 1217 return (B_TRUSS_POINT_3(rval, SYS_acctctl, EINVAL, cmd, buf, 1218 bufsz)); 1219 } 1220 1221 return (__systemcall(rval, SYS_acctctl + 1024, mode | option, buf, 1222 bufsz)); 1223 } 1224 1225 /* 1226 * The Audit Policy parameters have changed due to: 1227 * 6466722 audituser and AUDIT_USER are defined, unused, undocumented and 1228 * should be removed. 1229 * 1230 * In S10 we had the following flag: 1231 * #define AUDIT_USER 0x0040 1232 * which doesn't exist in Solaris Next where the subsequent flags are shifted 1233 * down. For example, in S10 we had: 1234 * #define AUDIT_GROUP 0x0080 1235 * but on Solaris Next we have: 1236 * #define AUDIT_GROUP 0x0040 1237 * AUDIT_GROUP has the value AUDIT_USER had in S10 and all of the subsequent 1238 * bits are also shifted one place. 1239 * 1240 * When we're getting or setting the Audit Policy parameters we need to 1241 * shift the outgoing or incoming bits into their proper positions. Since 1242 * S10_AUDIT_USER was always unused, we always clear that bit on A_GETPOLICY. 1243 * 1244 * The command we care about, BSM_AUDITCTL, passes the most parameters (3), 1245 * so declare this function to take up to 4 args and just pass them on. 1246 * The number of parameters for s10_auditsys needs to be equal to the BSM_* 1247 * subcommand that has the most parameters, since we want to pass all 1248 * parameters through, regardless of which subcommands we interpose on. 1249 * 1250 * Note that the auditsys system call uses the SYSENT_AP macro wrapper instead 1251 * of the more common SYSENT_CI macro. This means the return value is a 1252 * SE_64RVAL so the syscall table uses RV_64RVAL. 1253 */ 1254 1255 #define S10_AUDIT_HMASK 0xffffffc0 1256 #define S10_AUDIT_LMASK 0x3f 1257 #define S10_AUC_NOSPACE 0x3 1258 1259 int 1260 s10_auditsys(sysret_t *rval, int bsmcmd, intptr_t a0, intptr_t a1, intptr_t a2) 1261 { 1262 int err; 1263 uint32_t m; 1264 1265 if (bsmcmd != BSM_AUDITCTL) 1266 return (__systemcall(rval, SYS_auditsys + 1024, bsmcmd, a0, a1, 1267 a2)); 1268 1269 if ((int)a0 == A_GETPOLICY) { 1270 if ((err = __systemcall(rval, SYS_auditsys + 1024, bsmcmd, a0, 1271 &m, a2)) != 0) 1272 return (err); 1273 m = ((m & S10_AUDIT_HMASK) << 1) | (m & S10_AUDIT_LMASK); 1274 if (brand_uucopy(&m, (void *)a1, sizeof (m)) != 0) 1275 return (EFAULT); 1276 return (0); 1277 1278 } else if ((int)a0 == A_SETPOLICY) { 1279 if (brand_uucopy((const void *)a1, &m, sizeof (m)) != 0) 1280 return (EFAULT); 1281 m = ((m >> 1) & S10_AUDIT_HMASK) | (m & S10_AUDIT_LMASK); 1282 return (__systemcall(rval, SYS_auditsys + 1024, bsmcmd, a0, &m, 1283 a2)); 1284 } else if ((int)a0 == A_GETCOND) { 1285 if ((err = __systemcall(rval, SYS_auditsys + 1024, bsmcmd, a0, 1286 &m, a2)) != 0) 1287 return (err); 1288 if (m == AUC_NOSPACE) 1289 m = S10_AUC_NOSPACE; 1290 if (brand_uucopy(&m, (void *)a1, sizeof (m)) != 0) 1291 return (EFAULT); 1292 return (0); 1293 } else if ((int)a0 == A_SETCOND) { 1294 if (brand_uucopy((const void *)a1, &m, sizeof (m)) != 0) 1295 return (EFAULT); 1296 if (m == S10_AUC_NOSPACE) 1297 m = AUC_NOSPACE; 1298 return (__systemcall(rval, SYS_auditsys + 1024, bsmcmd, a0, &m, 1299 a2)); 1300 } 1301 1302 return (__systemcall(rval, SYS_auditsys + 1024, bsmcmd, a0, a1, a2)); 1303 } 1304 1305 /* 1306 * Determine whether the executable passed to SYS_exec or SYS_execve is a 1307 * native executable. The s10_npreload.so invokes the B_S10_NATIVE brand 1308 * operation which patches up the processes exec info to eliminate any trace 1309 * of the wrapper. That will make pgrep and other commands that examine 1310 * process' executable names and command-line parameters work properly. 1311 */ 1312 static int 1313 s10_exec_native(sysret_t *rval, const char *fname, const char **argp, 1314 const char **envp) 1315 { 1316 const char *filename = fname; 1317 char path[64]; 1318 int err; 1319 1320 /* Get a copy of the executable we're trying to run */ 1321 path[0] = '\0'; 1322 (void) brand_uucopystr(filename, path, sizeof (path)); 1323 1324 /* Check if we're trying to run a native binary */ 1325 if (strncmp(path, "/.SUNWnative/usr/lib/brand/solaris10/s10_native", 1326 sizeof (path)) != 0) 1327 return (0); 1328 1329 /* Skip the first element in the argv array */ 1330 argp++; 1331 1332 /* 1333 * The the path of the dynamic linker is the second parameter 1334 * of s10_native_exec(). 1335 */ 1336 if (brand_uucopy(argp, &filename, sizeof (char *)) != 0) 1337 return (EFAULT); 1338 1339 /* If an exec call succeeds, it never returns */ 1340 err = __systemcall(rval, SYS_brand + 1024, B_EXEC_NATIVE, filename, 1341 argp, envp, NULL, NULL, NULL); 1342 brand_assert(err != 0); 1343 return (err); 1344 } 1345 1346 /* 1347 * Interpose on the SYS_exec syscall to detect native wrappers. 1348 */ 1349 int 1350 s10_exec(sysret_t *rval, const char *fname, const char **argp) 1351 { 1352 int err; 1353 1354 if ((err = s10_exec_native(rval, fname, argp, NULL)) != 0) 1355 return (err); 1356 1357 /* If an exec call succeeds, it never returns */ 1358 err = __systemcall(rval, SYS_execve + 1024, fname, argp, NULL); 1359 brand_assert(err != 0); 1360 return (err); 1361 } 1362 1363 /* 1364 * Interpose on the SYS_execve syscall to detect native wrappers. 1365 */ 1366 int 1367 s10_execve(sysret_t *rval, const char *fname, const char **argp, 1368 const char **envp) 1369 { 1370 int err; 1371 1372 if ((err = s10_exec_native(rval, fname, argp, envp)) != 0) 1373 return (err); 1374 1375 /* If an exec call succeeds, it never returns */ 1376 err = __systemcall(rval, SYS_execve + 1024, fname, argp, envp); 1377 brand_assert(err != 0); 1378 return (err); 1379 } 1380 1381 /* 1382 * S10's issetugid() syscall is now a subcode to privsys(). 1383 */ 1384 static int 1385 s10_issetugid(sysret_t *rval) 1386 { 1387 return (__systemcall(rval, SYS_privsys + 1024, PRIVSYS_ISSETUGID, 1388 0, 0, 0, 0, 0)); 1389 } 1390 1391 /* 1392 * S10's socket() syscall does not split type and flags 1393 */ 1394 static int 1395 s10_so_socket(sysret_t *rval, int domain, int type, int protocol, 1396 char *devpath, int version) 1397 { 1398 if ((type & ~SOCK_TYPE_MASK) != 0) { 1399 errno = EINVAL; 1400 return (-1); 1401 } 1402 return (__systemcall(rval, SYS_so_socket + 1024, domain, type, 1403 protocol, devpath, version)); 1404 } 1405 1406 /* 1407 * S10's pipe() syscall has a different calling convention 1408 */ 1409 static int 1410 s10_pipe(sysret_t *rval) 1411 { 1412 int fds[2], err; 1413 if ((err = __systemcall(rval, SYS_pipe + 1024, fds, 0)) != 0) 1414 return (err); 1415 1416 rval->sys_rval1 = fds[0]; 1417 rval->sys_rval2 = fds[1]; 1418 return (0); 1419 } 1420 1421 /* 1422 * S10's accept() syscall takes three arguments 1423 */ 1424 static int 1425 s10_accept(sysret_t *rval, int sock, struct sockaddr *addr, uint_t *addrlen, 1426 int version) 1427 { 1428 return (__systemcall(rval, SYS_accept + 1024, sock, addr, addrlen, 1429 version, 0)); 1430 } 1431 1432 static long 1433 s10_uname(sysret_t *rv, uintptr_t p1) 1434 { 1435 struct utsname un, *unp = (struct utsname *)p1; 1436 int rev, err; 1437 1438 if ((err = __systemcall(rv, SYS_uname + 1024, &un)) != 0) 1439 return (err); 1440 1441 rev = atoi(&un.release[2]); 1442 brand_assert(rev >= 11); 1443 bzero(un.release, _SYS_NMLN); 1444 (void) strlcpy(un.release, S10_UTS_RELEASE, _SYS_NMLN); 1445 bzero(un.version, _SYS_NMLN); 1446 (void) strlcpy(un.version, S10_UTS_VERSION, _SYS_NMLN); 1447 1448 /* copy out the modified uname info */ 1449 return (brand_uucopy(&un, unp, sizeof (un))); 1450 } 1451 1452 int 1453 s10_sysconfig(sysret_t *rv, int which) 1454 { 1455 long value; 1456 1457 /* 1458 * We must interpose on the sysconfig(2) requests 1459 * that deal with the realtime signal number range. 1460 * All others get passed to the native sysconfig(2). 1461 */ 1462 switch (which) { 1463 case _CONFIG_RTSIG_MAX: 1464 value = S10_SIGRTMAX - S10_SIGRTMIN + 1; 1465 break; 1466 case _CONFIG_SIGRT_MIN: 1467 value = S10_SIGRTMIN; 1468 break; 1469 case _CONFIG_SIGRT_MAX: 1470 value = S10_SIGRTMAX; 1471 break; 1472 default: 1473 return (__systemcall(rv, SYS_sysconfig + 1024, which)); 1474 } 1475 1476 (void) B_TRUSS_POINT_1(rv, SYS_sysconfig, 0, which); 1477 rv->sys_rval1 = value; 1478 rv->sys_rval2 = 0; 1479 1480 return (0); 1481 } 1482 1483 int 1484 s10_sysinfo(sysret_t *rv, int command, char *buf, long count) 1485 { 1486 char *value; 1487 int len; 1488 1489 /* 1490 * We must interpose on the sysinfo(2) commands SI_RELEASE and 1491 * SI_VERSION; all others get passed to the native sysinfo(2) 1492 * command. 1493 */ 1494 switch (command) { 1495 case SI_RELEASE: 1496 value = S10_UTS_RELEASE; 1497 break; 1498 1499 case SI_VERSION: 1500 value = S10_UTS_VERSION; 1501 break; 1502 1503 default: 1504 /* 1505 * The default action is to pass the command to the 1506 * native sysinfo(2) syscall. 1507 */ 1508 return (__systemcall(rv, SYS_systeminfo + 1024, 1509 command, buf, count)); 1510 } 1511 1512 len = strlen(value) + 1; 1513 if (count > 0) { 1514 if (brand_uucopystr(value, buf, count) != 0) 1515 return (EFAULT); 1516 1517 /* 1518 * Assure NULL termination of buf as brand_uucopystr() doesn't. 1519 */ 1520 if (len > count && brand_uucopy("\0", buf + (count - 1), 1) 1521 != 0) 1522 return (EFAULT); 1523 } 1524 1525 /* 1526 * On success, sysinfo(2) returns the size of buffer required to hold 1527 * the complete value plus its terminating NULL byte. 1528 */ 1529 (void) B_TRUSS_POINT_3(rv, SYS_systeminfo, 0, command, buf, count); 1530 rv->sys_rval1 = len; 1531 rv->sys_rval2 = 0; 1532 return (0); 1533 } 1534 1535 #if defined(__x86) 1536 #if defined(__amd64) 1537 /* 1538 * 64-bit x86 LWPs created by SYS_lwp_create start here if they need to set 1539 * their %fs registers to the legacy Solaris 10 selector value. 1540 * 1541 * This function does three things: 1542 * 1543 * 1. Trap to the kernel so that it can set %fs to the legacy Solaris 10 1544 * selector value. 1545 * 2. Read the LWP's true entry point (the entry point supplied by libc 1546 * when SYS_lwp_create was invoked) from %r14. 1547 * 3. Eliminate this function's stack frame and pass control to the LWP's 1548 * true entry point. 1549 * 1550 * See the comment above s10_lwp_create_correct_fs() (see below) for the reason 1551 * why this function exists. 1552 */ 1553 /*ARGSUSED*/ 1554 static void 1555 s10_lwp_create_entry_point(void *ulwp_structp) 1556 { 1557 sysret_t rval; 1558 1559 /* 1560 * The new LWP's %fs register is initially zero, but libc won't 1561 * function correctly when %fs is zero. Change the LWP's %fs register 1562 * via SYS_brand. 1563 */ 1564 (void) __systemcall(&rval, SYS_brand + 1024, B_S10_FSREGCORRECTION); 1565 1566 /* 1567 * Jump to the true entry point, which is stored in %r14. 1568 * Remove our stack frame before jumping so that 1569 * s10_lwp_create_entry_point() won't be seen in stack traces. 1570 * 1571 * NOTE: s10_lwp_create_entry_point() pushes %r12 onto its stack frame 1572 * so that it can use it as a temporary register. We don't restore %r12 1573 * in this assembly block because we don't care about its value (and 1574 * neither does _lwp_start()). Besides, the System V ABI AMD64 1575 * Actirecture Processor Supplement doesn't specify that %r12 should 1576 * have a special value when LWPs start, so we can ignore its value when 1577 * we jump to the true entry point. Furthermore, %r12 is a callee-saved 1578 * register, so the true entry point should push %r12 onto its stack 1579 * before using the register. We ignore %r14 after we read it for 1580 * similar reasons. 1581 * 1582 * NOTE: The compiler will generate a function epilogue for this 1583 * function despite the fact that the LWP will never execute it. 1584 * We could hand-code this entire function in assembly to eliminate 1585 * the epilogue, but the epilogue is only three or four instructions, 1586 * so we wouldn't save much space. Besides, why would we want 1587 * to create yet another ugly, hard-to-maintain assembly function when 1588 * we could write most of it in C? 1589 */ 1590 __asm__ __volatile__( 1591 "movq %0, %%rdi\n\t" /* pass ulwp_structp as arg1 */ 1592 "movq %%rbp, %%rsp\n\t" /* eliminate the stack frame */ 1593 "popq %%rbp\n\t" 1594 "jmp *%%r14\n\t" /* jump to the true entry point */ 1595 : : "r" (ulwp_structp)); 1596 /*NOTREACHED*/ 1597 } 1598 1599 /* 1600 * The S10 libc expects that %fs will be nonzero for new 64-bit x86 LWPs but the 1601 * Nevada kernel clears %fs for such LWPs. Unforunately, new LWPs do not issue 1602 * SYS_lwp_private (see s10_lwp_private() below) after they are created, so 1603 * we must ensure that new LWPs invoke a brand operation that sets %fs to a 1604 * nonzero value immediately after their creation. 1605 * 1606 * The easiest way to do this is to make new LWPs start at a special function, 1607 * s10_lwp_create_entry_point() (see its definition above), that invokes the 1608 * brand operation that corrects %fs. We'll store the entry points of new LWPs 1609 * in their %r14 registers so that s10_lwp_create_entry_point() can find and 1610 * call them after invoking the special brand operation. %r14 is a callee-saved 1611 * register; therefore, any functions invoked by s10_lwp_create_entry_point() 1612 * and all functions dealing with signals (e.g., sigacthandler()) will preserve 1613 * %r14 for s10_lwp_create_entry_point(). 1614 * 1615 * The Nevada kernel can safely work with nonzero %fs values because the kernel 1616 * configures per-thread %fs segment descriptors so that the legacy %fs selector 1617 * value will still work. See the comment in lwp_load() regarding %fs and 1618 * %fsbase in 64-bit x86 processes. 1619 * 1620 * This emulation exists thanks to CRs 6467491 and 6501650. 1621 */ 1622 static int 1623 s10_lwp_create_correct_fs(sysret_t *rval, ucontext_t *ucp, int flags, 1624 id_t *new_lwp) 1625 { 1626 ucontext_t s10_uc; 1627 1628 /* 1629 * Copy the supplied ucontext_t structure to the local stack 1630 * frame and store the new LWP's entry point (the value of %rip 1631 * stored in the ucontext_t) in the new LWP's %r14 register. 1632 * Then make s10_lwp_create_entry_point() the new LWP's entry 1633 * point. 1634 */ 1635 if (brand_uucopy(ucp, &s10_uc, sizeof (s10_uc)) != 0) 1636 return (EFAULT); 1637 1638 s10_uc.uc_mcontext.gregs[REG_R14] = s10_uc.uc_mcontext.gregs[REG_RIP]; 1639 s10_uc.uc_mcontext.gregs[REG_RIP] = (greg_t)s10_lwp_create_entry_point; 1640 1641 /* fix up the signal mask */ 1642 if (s10_uc.uc_flags & UC_SIGMASK) 1643 (void) s10sigset_to_native(&s10_uc.uc_sigmask, 1644 &s10_uc.uc_sigmask); 1645 1646 /* 1647 * Issue SYS_lwp_create to create the new LWP. We pass the 1648 * modified ucontext_t to make sure that the new LWP starts at 1649 * s10_lwp_create_entry_point(). 1650 */ 1651 return (__systemcall(rval, SYS_lwp_create + 1024, &s10_uc, 1652 flags, new_lwp)); 1653 } 1654 #endif /* __amd64 */ 1655 1656 /* 1657 * SYS_lwp_private is issued by libc_init() to set %fsbase in 64-bit x86 1658 * processes. The Nevada kernel sets %fs to zero but the S10 libc expects 1659 * %fs to be nonzero. We'll pass the issued system call to the kernel untouched 1660 * and invoke a brand operation to set %fs to the legacy S10 selector value. 1661 * 1662 * This emulation exists thanks to CRs 6467491 and 6501650. 1663 */ 1664 static int 1665 s10_lwp_private(sysret_t *rval, int cmd, int which, uintptr_t base) 1666 { 1667 #if defined(__amd64) 1668 int err; 1669 1670 /* 1671 * The current LWP's %fs register should be zero. Determine whether the 1672 * Solaris 10 libc with which we're working functions correctly when %fs 1673 * is zero by calling thr_main() after issuing the SYS_lwp_private 1674 * syscall. If thr_main() barfs (returns -1), then change the LWP's %fs 1675 * register via SYS_brand and patch brand_sysent_table so that issuing 1676 * SYS_lwp_create executes s10_lwp_create_correct_fs() rather than the 1677 * default s10_lwp_create(). s10_lwp_create_correct_fs() will 1678 * guarantee that new LWPs will have correct %fs values. 1679 */ 1680 if ((err = __systemcall(rval, SYS_lwp_private + 1024, cmd, which, 1681 base)) != 0) 1682 return (err); 1683 if (thr_main() == -1) { 1684 /* 1685 * SYS_lwp_private is only issued by libc_init(), which is 1686 * executed when libc is first loaded by ld.so.1. Thus we 1687 * are guaranteed to be single-threaded at this point. Even 1688 * if we were multithreaded at this point, writing a 64-bit 1689 * value to the st_callc field of a brand_sysent_table 1690 * entry is guaranteed to be atomic on 64-bit x86 chips 1691 * as long as the field is not split across cache lines 1692 * (It shouldn't be.). See chapter 8, section 1.1 of 1693 * "The Intel 64 and IA32 Architectures Software Developer's 1694 * Manual," Volume 3A for more details. 1695 */ 1696 brand_sysent_table[SYS_lwp_create].st_callc = 1697 (sysent_cb_t)s10_lwp_create_correct_fs; 1698 return (__systemcall(rval, SYS_brand + 1024, 1699 B_S10_FSREGCORRECTION)); 1700 } 1701 return (0); 1702 #else /* !__amd64 */ 1703 return (__systemcall(rval, SYS_lwp_private + 1024, cmd, which, base)); 1704 #endif /* !__amd64 */ 1705 } 1706 #endif /* __x86 */ 1707 1708 /* 1709 * The Opensolaris versions of lwp_mutex_timedlock() and lwp_mutex_trylock() 1710 * add an extra argument to the interfaces, a uintptr_t value for the mutex's 1711 * mutex_owner field. The Solaris 10 libc assigns the mutex_owner field at 1712 * user-level, so we just make the extra argument be zero in both syscalls. 1713 */ 1714 1715 static int 1716 s10_lwp_mutex_timedlock(sysret_t *rval, lwp_mutex_t *lp, timespec_t *tsp) 1717 { 1718 return (__systemcall(rval, SYS_lwp_mutex_timedlock + 1024, lp, tsp, 0)); 1719 } 1720 1721 static int 1722 s10_lwp_mutex_trylock(sysret_t *rval, lwp_mutex_t *lp) 1723 { 1724 return (__systemcall(rval, SYS_lwp_mutex_trylock + 1024, lp, 0)); 1725 } 1726 1727 /* 1728 * If the emul_global_zone flag is set then emulate some aspects of the 1729 * zone system call. In particular, emulate the global zone ID on the 1730 * ZONE_LOOKUP subcommand and emulate some of the global zone attributes 1731 * on the ZONE_GETATTR subcommand. If the flag is not set or we're performing 1732 * some other operation, simply pass the calls through. 1733 */ 1734 int 1735 s10_zone(sysret_t *rval, int cmd, void *arg1, void *arg2, void *arg3, 1736 void *arg4) 1737 { 1738 char *aval; 1739 int len; 1740 zoneid_t zid; 1741 int attr; 1742 char *buf; 1743 size_t bufsize; 1744 1745 /* 1746 * We only emulate the zone syscall for a subset of specific commands, 1747 * otherwise we just pass the call through. 1748 */ 1749 if (!emul_global_zone) 1750 return (__systemcall(rval, SYS_zone + 1024, cmd, arg1, arg2, 1751 arg3, arg4)); 1752 1753 switch (cmd) { 1754 case ZONE_LOOKUP: 1755 (void) B_TRUSS_POINT_1(rval, SYS_zone, 0, cmd); 1756 rval->sys_rval1 = GLOBAL_ZONEID; 1757 rval->sys_rval2 = 0; 1758 return (0); 1759 1760 case ZONE_GETATTR: 1761 zid = (zoneid_t)(uintptr_t)arg1; 1762 attr = (int)(uintptr_t)arg2; 1763 buf = (char *)arg3; 1764 bufsize = (size_t)arg4; 1765 1766 /* 1767 * If the request is for the global zone then we're emulating 1768 * that, otherwise pass this thru. 1769 */ 1770 if (zid != GLOBAL_ZONEID) 1771 goto passthru; 1772 1773 switch (attr) { 1774 case ZONE_ATTR_NAME: 1775 aval = GLOBAL_ZONENAME; 1776 break; 1777 1778 case ZONE_ATTR_BRAND: 1779 aval = NATIVE_BRAND_NAME; 1780 break; 1781 default: 1782 /* 1783 * We only emulate a subset of the attrs, use the 1784 * real zone id to pass thru the rest. 1785 */ 1786 arg1 = (void *)(uintptr_t)zoneid; 1787 goto passthru; 1788 } 1789 1790 (void) B_TRUSS_POINT_5(rval, SYS_zone, 0, cmd, zid, attr, 1791 buf, bufsize); 1792 1793 len = strlen(aval) + 1; 1794 if (len > bufsize) 1795 return (ENAMETOOLONG); 1796 1797 if (buf != NULL) { 1798 if (len == 1) { 1799 if (brand_uucopy("\0", buf, 1) != 0) 1800 return (EFAULT); 1801 } else { 1802 if (brand_uucopystr(aval, buf, len) != 0) 1803 return (EFAULT); 1804 1805 /* 1806 * Assure NULL termination of "buf" as 1807 * brand_uucopystr() does NOT. 1808 */ 1809 if (brand_uucopy("\0", buf + (len - 1), 1) != 0) 1810 return (EFAULT); 1811 } 1812 } 1813 1814 rval->sys_rval1 = len; 1815 rval->sys_rval2 = 0; 1816 return (0); 1817 1818 default: 1819 break; 1820 } 1821 1822 passthru: 1823 return (__systemcall(rval, SYS_zone + 1024, cmd, arg1, arg2, arg3, 1824 arg4)); 1825 } 1826 1827 /*ARGSUSED*/ 1828 int 1829 brand_init(int argc, char *argv[], char *envp[]) 1830 { 1831 sysret_t rval; 1832 ulong_t ldentry; 1833 int err; 1834 char *bname; 1835 1836 brand_pre_init(); 1837 1838 /* 1839 * Cache the pid of the zone's init process and determine if 1840 * we're init(1m) for the zone. Remember: we might be init 1841 * now, but as soon as we fork(2) we won't be. 1842 */ 1843 (void) get_initpid_info(); 1844 1845 /* get the current zoneid */ 1846 err = __systemcall(&rval, SYS_zone, ZONE_LOOKUP, NULL); 1847 brand_assert(err == 0); 1848 zoneid = (zoneid_t)rval.sys_rval1; 1849 1850 /* Get the zone's emulation bitmap. */ 1851 if ((err = __systemcall(&rval, SYS_zone, ZONE_GETATTR, zoneid, 1852 S10_EMUL_BITMAP, emul_bitmap, sizeof (emul_bitmap))) != 0) { 1853 brand_abort(err, "The zone's patch level is unsupported"); 1854 /*NOTREACHED*/ 1855 } 1856 1857 bname = basename(argv[0]); 1858 1859 /* 1860 * In general we want the S10 commands that are zone-aware to continue 1861 * to behave as they normally do within a zone. Since these commands 1862 * are zone-aware, they should continue to "do the right thing". 1863 * However, some zone-aware commands aren't going to work the way 1864 * we expect them to inside the branded zone. In particular, the pkg 1865 * and patch commands will not properly manage all pkgs/patches 1866 * unless the commands think they are running in the global zone. For 1867 * these commands we want to emulate the global zone. 1868 * 1869 * We don't do any emulation for pkgcond since it is typically used 1870 * in pkg/patch postinstall scripts and we want those scripts to do 1871 * the right thing inside a zone. 1872 * 1873 * One issue is the handling of hollow pkgs. Since the pkgs are 1874 * hollow, they won't use pkgcond in their postinstall scripts. These 1875 * pkgs typically are installing drivers so we handle that by 1876 * replacing add_drv and rem_drv in the s10_boot script. 1877 */ 1878 if (strcmp("pkgadd", bname) == 0 || strcmp("pkgrm", bname) == 0 || 1879 strcmp("patchadd", bname) == 0 || strcmp("patchrm", bname) == 0) 1880 emul_global_zone = B_TRUE; 1881 1882 ldentry = brand_post_init(S10_VERSION, argc, argv, envp); 1883 1884 brand_runexe(argv, ldentry); 1885 /*NOTREACHED*/ 1886 brand_abort(0, "brand_runexe() returned"); 1887 return (-1); 1888 } 1889 1890 /* 1891 * This table must have at least NSYSCALL entries in it. 1892 * 1893 * The second parameter of each entry in the brand_sysent_table 1894 * contains the number of parameters and flags that describe the 1895 * syscall return value encoding. See the block comments at the 1896 * top of this file for more information about the syscall return 1897 * value flags and when they should be used. 1898 */ 1899 brand_sysent_table_t brand_sysent_table[] = { 1900 #if defined(__sparc) && !defined(__sparcv9) 1901 EMULATE(brand_indir, 9 | RV_64RVAL), /* 0 */ 1902 #else 1903 NOSYS, /* 0 */ 1904 #endif 1905 NOSYS, /* 1 */ 1906 EMULATE(s10_forkall, 0 | RV_32RVAL2), /* 2 */ 1907 NOSYS, /* 3 */ 1908 NOSYS, /* 4 */ 1909 EMULATE(s10_open, 3 | RV_DEFAULT), /* 5 */ 1910 NOSYS, /* 6 */ 1911 EMULATE(s10_wait, 0 | RV_32RVAL2), /* 7 */ 1912 EMULATE(s10_creat, 2 | RV_DEFAULT), /* 8 */ 1913 EMULATE(s10_link, 2 | RV_DEFAULT), /* 9 */ 1914 EMULATE(s10_unlink, 1 | RV_DEFAULT), /* 10 */ 1915 EMULATE(s10_exec, 2 | RV_DEFAULT), /* 11 */ 1916 NOSYS, /* 12 */ 1917 NOSYS, /* 13 */ 1918 EMULATE(s10_mknod, 3 | RV_DEFAULT), /* 14 */ 1919 EMULATE(s10_chmod, 2 | RV_DEFAULT), /* 15 */ 1920 EMULATE(s10_chown, 3 | RV_DEFAULT), /* 16 */ 1921 NOSYS, /* 17 */ 1922 EMULATE(s10_stat, 2 | RV_DEFAULT), /* 18 */ 1923 NOSYS, /* 19 */ 1924 NOSYS, /* 20 */ 1925 NOSYS, /* 21 */ 1926 EMULATE(s10_umount, 1 | RV_DEFAULT), /* 22 */ 1927 NOSYS, /* 23 */ 1928 NOSYS, /* 24 */ 1929 NOSYS, /* 25 */ 1930 NOSYS, /* 26 */ 1931 NOSYS, /* 27 */ 1932 EMULATE(s10_fstat, 2 | RV_DEFAULT), /* 28 */ 1933 NOSYS, /* 29 */ 1934 EMULATE(s10_utime, 2 | RV_DEFAULT), /* 30 */ 1935 NOSYS, /* 31 */ 1936 NOSYS, /* 32 */ 1937 EMULATE(s10_access, 2 | RV_DEFAULT), /* 33 */ 1938 NOSYS, /* 34 */ 1939 NOSYS, /* 35 */ 1940 NOSYS, /* 36 */ 1941 EMULATE(s10_kill, 2 | RV_DEFAULT), /* 37 */ 1942 NOSYS, /* 38 */ 1943 NOSYS, /* 39 */ 1944 NOSYS, /* 40 */ 1945 EMULATE(s10_dup, 1 | RV_DEFAULT), /* 41 */ 1946 EMULATE(s10_pipe, 0 | RV_32RVAL2), /* 42 */ 1947 NOSYS, /* 43 */ 1948 NOSYS, /* 44 */ 1949 NOSYS, /* 45 */ 1950 NOSYS, /* 46 */ 1951 NOSYS, /* 47 */ 1952 NOSYS, /* 48 */ 1953 NOSYS, /* 49 */ 1954 NOSYS, /* 50 */ 1955 NOSYS, /* 51 */ 1956 NOSYS, /* 52 */ 1957 NOSYS, /* 53 */ 1958 EMULATE(s10_ioctl, 3 | RV_DEFAULT), /* 54 */ 1959 NOSYS, /* 55 */ 1960 NOSYS, /* 56 */ 1961 NOSYS, /* 57 */ 1962 NOSYS, /* 58 */ 1963 EMULATE(s10_execve, 3 | RV_DEFAULT), /* 59 */ 1964 NOSYS, /* 60 */ 1965 NOSYS, /* 61 */ 1966 NOSYS, /* 62 */ 1967 NOSYS, /* 63 */ 1968 NOSYS, /* 64 */ 1969 NOSYS, /* 65 */ 1970 NOSYS, /* 66 */ 1971 NOSYS, /* 67 */ 1972 NOSYS, /* 68 */ 1973 NOSYS, /* 69 */ 1974 NOSYS, /* 70 */ 1975 EMULATE(s10_acctctl, 3 | RV_DEFAULT), /* 71 */ 1976 NOSYS, /* 72 */ 1977 NOSYS, /* 73 */ 1978 NOSYS, /* 74 */ 1979 EMULATE(s10_issetugid, 0 | RV_DEFAULT), /* 75 */ 1980 EMULATE(s10_fsat, 6 | RV_DEFAULT), /* 76 */ 1981 NOSYS, /* 77 */ 1982 NOSYS, /* 78 */ 1983 EMULATE(s10_rmdir, 1 | RV_DEFAULT), /* 79 */ 1984 EMULATE(s10_mkdir, 2 | RV_DEFAULT), /* 80 */ 1985 EMULATE(s10_getdents, 3 | RV_DEFAULT), /* 81 */ 1986 NOSYS, /* 82 */ 1987 NOSYS, /* 83 */ 1988 NOSYS, /* 84 */ 1989 NOSYS, /* 85 */ 1990 NOSYS, /* 86 */ 1991 EMULATE(s10_poll, 3 | RV_DEFAULT), /* 87 */ 1992 EMULATE(s10_lstat, 2 | RV_DEFAULT), /* 88 */ 1993 EMULATE(s10_symlink, 2 | RV_DEFAULT), /* 89 */ 1994 EMULATE(s10_readlink, 3 | RV_DEFAULT), /* 90 */ 1995 NOSYS, /* 91 */ 1996 NOSYS, /* 92 */ 1997 EMULATE(s10_fchmod, 2 | RV_DEFAULT), /* 93 */ 1998 EMULATE(s10_fchown, 3 | RV_DEFAULT), /* 94 */ 1999 EMULATE(s10_sigprocmask, 3 | RV_DEFAULT), /* 95 */ 2000 EMULATE(s10_sigsuspend, 1 | RV_DEFAULT), /* 96 */ 2001 NOSYS, /* 97 */ 2002 EMULATE(s10_sigaction, 3 | RV_DEFAULT), /* 98 */ 2003 EMULATE(s10_sigpending, 2 | RV_DEFAULT), /* 99 */ 2004 NOSYS, /* 100 */ 2005 NOSYS, /* 101 */ 2006 NOSYS, /* 102 */ 2007 NOSYS, /* 103 */ 2008 NOSYS, /* 104 */ 2009 NOSYS, /* 105 */ 2010 NOSYS, /* 106 */ 2011 EMULATE(s10_waitid, 4 | RV_DEFAULT), /* 107 */ 2012 EMULATE(s10_sigsendsys, 2 | RV_DEFAULT), /* 108 */ 2013 NOSYS, /* 109 */ 2014 NOSYS, /* 110 */ 2015 NOSYS, /* 111 */ 2016 NOSYS, /* 112 */ 2017 NOSYS, /* 113 */ 2018 NOSYS, /* 114 */ 2019 NOSYS, /* 115 */ 2020 NOSYS, /* 116 */ 2021 NOSYS, /* 117 */ 2022 NOSYS, /* 118 */ 2023 NOSYS, /* 119 */ 2024 NOSYS, /* 120 */ 2025 NOSYS, /* 121 */ 2026 NOSYS, /* 122 */ 2027 #if defined(__x86) 2028 EMULATE(s10_xstat, 3 | RV_DEFAULT), /* 123 */ 2029 EMULATE(s10_lxstat, 3 | RV_DEFAULT), /* 124 */ 2030 EMULATE(s10_fxstat, 3 | RV_DEFAULT), /* 125 */ 2031 EMULATE(s10_xmknod, 4 | RV_DEFAULT), /* 126 */ 2032 #else 2033 NOSYS, /* 123 */ 2034 NOSYS, /* 124 */ 2035 NOSYS, /* 125 */ 2036 NOSYS, /* 126 */ 2037 #endif 2038 NOSYS, /* 127 */ 2039 NOSYS, /* 128 */ 2040 NOSYS, /* 129 */ 2041 EMULATE(s10_lchown, 3 | RV_DEFAULT), /* 130 */ 2042 NOSYS, /* 131 */ 2043 NOSYS, /* 132 */ 2044 NOSYS, /* 133 */ 2045 EMULATE(s10_rename, 2 | RV_DEFAULT), /* 134 */ 2046 EMULATE(s10_uname, 1 | RV_DEFAULT), /* 135 */ 2047 NOSYS, /* 136 */ 2048 EMULATE(s10_sysconfig, 1 | RV_DEFAULT), /* 137 */ 2049 NOSYS, /* 138 */ 2050 EMULATE(s10_sysinfo, 3 | RV_DEFAULT), /* 139 */ 2051 NOSYS, /* 140 */ 2052 NOSYS, /* 141 */ 2053 NOSYS, /* 142 */ 2054 EMULATE(s10_fork1, 0 | RV_32RVAL2), /* 143 */ 2055 EMULATE(s10_sigtimedwait, 3 | RV_DEFAULT), /* 144 */ 2056 NOSYS, /* 145 */ 2057 NOSYS, /* 146 */ 2058 EMULATE(s10_lwp_sema_wait, 1 | RV_DEFAULT), /* 147 */ 2059 NOSYS, /* 148 */ 2060 NOSYS, /* 149 */ 2061 NOSYS, /* 150 */ 2062 NOSYS, /* 151 */ 2063 NOSYS, /* 152 */ 2064 NOSYS, /* 153 */ 2065 EMULATE(s10_utimes, 2 | RV_DEFAULT), /* 154 */ 2066 NOSYS, /* 155 */ 2067 NOSYS, /* 156 */ 2068 NOSYS, /* 157 */ 2069 NOSYS, /* 158 */ 2070 EMULATE(s10_lwp_create, 3 | RV_DEFAULT), /* 159 */ 2071 NOSYS, /* 160 */ 2072 NOSYS, /* 161 */ 2073 NOSYS, /* 162 */ 2074 EMULATE(s10_lwp_kill, 2 | RV_DEFAULT), /* 163 */ 2075 NOSYS, /* 164 */ 2076 EMULATE(s10_lwp_sigmask, 3 | RV_32RVAL2), /* 165 */ 2077 #if defined(__x86) 2078 EMULATE(s10_lwp_private, 3 | RV_DEFAULT), /* 166 */ 2079 #else 2080 NOSYS, /* 166 */ 2081 #endif 2082 NOSYS, /* 167 */ 2083 NOSYS, /* 168 */ 2084 EMULATE(s10_lwp_mutex_lock, 1 | RV_DEFAULT), /* 169 */ 2085 NOSYS, /* 170 */ 2086 NOSYS, /* 171 */ 2087 NOSYS, /* 172 */ 2088 NOSYS, /* 173 */ 2089 EMULATE(s10_pwrite, 4 | RV_DEFAULT), /* 174 */ 2090 NOSYS, /* 175 */ 2091 NOSYS, /* 176 */ 2092 NOSYS, /* 177 */ 2093 NOSYS, /* 178 */ 2094 NOSYS, /* 179 */ 2095 NOSYS, /* 180 */ 2096 NOSYS, /* 181 */ 2097 NOSYS, /* 182 */ 2098 NOSYS, /* 183 */ 2099 NOSYS, /* 184 */ 2100 EMULATE(s10_acl, 4 | RV_DEFAULT), /* 185 */ 2101 EMULATE(s10_auditsys, 4 | RV_64RVAL), /* 186 */ 2102 NOSYS, /* 187 */ 2103 NOSYS, /* 188 */ 2104 NOSYS, /* 189 */ 2105 EMULATE(s10_sigqueue, 4 | RV_DEFAULT), /* 190 */ 2106 NOSYS, /* 191 */ 2107 NOSYS, /* 192 */ 2108 NOSYS, /* 193 */ 2109 NOSYS, /* 194 */ 2110 NOSYS, /* 195 */ 2111 NOSYS, /* 196 */ 2112 NOSYS, /* 197 */ 2113 NOSYS, /* 198 */ 2114 NOSYS, /* 199 */ 2115 EMULATE(s10_facl, 4 | RV_DEFAULT), /* 200 */ 2116 NOSYS, /* 201 */ 2117 NOSYS, /* 202 */ 2118 NOSYS, /* 203 */ 2119 NOSYS, /* 204 */ 2120 EMULATE(s10_signotify, 3 | RV_DEFAULT), /* 205 */ 2121 NOSYS, /* 206 */ 2122 NOSYS, /* 207 */ 2123 NOSYS, /* 208 */ 2124 NOSYS, /* 209 */ 2125 EMULATE(s10_lwp_mutex_timedlock, 2 | RV_DEFAULT), /* 210 */ 2126 NOSYS, /* 211 */ 2127 NOSYS, /* 212 */ 2128 #if defined(_LP64) 2129 NOSYS, /* 213 */ 2130 #else 2131 EMULATE(s10_getdents64, 3 | RV_DEFAULT), /* 213 */ 2132 #endif 2133 NOSYS, /* 214 */ 2134 #if defined(_LP64) 2135 NOSYS, /* 215 */ 2136 NOSYS, /* 216 */ 2137 NOSYS, /* 217 */ 2138 #else 2139 EMULATE(s10_stat64, 2 | RV_DEFAULT), /* 215 */ 2140 EMULATE(s10_lstat64, 2 | RV_DEFAULT), /* 216 */ 2141 EMULATE(s10_fstat64, 2 | RV_DEFAULT), /* 217 */ 2142 #endif 2143 NOSYS, /* 218 */ 2144 NOSYS, /* 219 */ 2145 NOSYS, /* 220 */ 2146 NOSYS, /* 221 */ 2147 NOSYS, /* 222 */ 2148 #if defined(_LP64) 2149 NOSYS, /* 223 */ 2150 NOSYS, /* 224 */ 2151 NOSYS, /* 225 */ 2152 #else 2153 EMULATE(s10_pwrite64, 5 | RV_DEFAULT), /* 223 */ 2154 EMULATE(s10_creat64, 2 | RV_DEFAULT), /* 224 */ 2155 EMULATE(s10_open64, 3 | RV_DEFAULT), /* 225 */ 2156 #endif 2157 NOSYS, /* 226 */ 2158 EMULATE(s10_zone, 5 | RV_DEFAULT), /* 227 */ 2159 NOSYS, /* 228 */ 2160 NOSYS, /* 229 */ 2161 EMULATE(s10_so_socket, 5 | RV_DEFAULT), /* 230 */ 2162 NOSYS, /* 231 */ 2163 NOSYS, /* 232 */ 2164 NOSYS, /* 233 */ 2165 EMULATE(s10_accept, 4 | RV_DEFAULT), /* 234 */ 2166 NOSYS, /* 235 */ 2167 NOSYS, /* 236 */ 2168 NOSYS, /* 237 */ 2169 NOSYS, /* 238 */ 2170 NOSYS, /* 239 */ 2171 NOSYS, /* 240 */ 2172 NOSYS, /* 241 */ 2173 NOSYS, /* 242 */ 2174 NOSYS, /* 243 */ 2175 NOSYS, /* 244 */ 2176 NOSYS, /* 245 */ 2177 NOSYS, /* 246 */ 2178 NOSYS, /* 247 */ 2179 NOSYS, /* 248 */ 2180 NOSYS, /* 249 */ 2181 NOSYS, /* 250 */ 2182 EMULATE(s10_lwp_mutex_trylock, 1 | RV_DEFAULT), /* 251 */ 2183 NOSYS, /* 252 */ 2184 NOSYS, /* 253 */ 2185 NOSYS, /* 254 */ 2186 NOSYS /* 255 */ 2187 }; 2188