| 1 | /*++ |
| 2 | |
| 3 | Copyright (c) Microsoft. All rights reserved. |
| 4 | |
| 5 | Module Name: |
| 6 | |
| 7 | get_set_id.c |
| 8 | |
| 9 | Abstract: |
| 10 | |
| 11 | This file is a test for the get*id and set*id system calls. |
| 12 | |
| 13 | --*/ |
| 14 | |
| 15 | #include "lxtcommon.h" |
| 16 | #include "unittests.h" |
| 17 | #include <stdio.h> |
| 18 | #include <errno.h> |
| 19 | #include <sys/types.h> |
| 20 | #include <sys/socket.h> |
| 21 | #include <sys/syscall.h> |
| 22 | #include <sys/wait.h> |
| 23 | #include <sys/un.h> |
| 24 | #include <limits.h> |
| 25 | |
| 26 | #define LXT_NAME "get_set_id" |
| 27 | |
| 28 | #if !defined(__amd64__) && !defined(__aarch64__) |
| 29 | |
| 30 | #define __NR_getuid16 24 |
| 31 | #define __NR_geteuid16 49 |
| 32 | #define __NR_getgid16 47 |
| 33 | #define __NR_getegid16 50 |
| 34 | #define __NR_getresuid16 165 |
| 35 | #define __NR_getresgid16 171 |
| 36 | |
| 37 | int GetSetId16Bit(PLXT_ARGS Args); |
| 38 | |
| 39 | #endif |
| 40 | |
| 41 | typedef unsigned short USHORT; |
| 42 | |
| 43 | // |
| 44 | // uid16_t and gid16_t are unsigned 16-bit integers. |
| 45 | // |
| 46 | |
| 47 | typedef USHORT uid16_t; |
| 48 | |
| 49 | #define MAX_UID16_T USHRT_MAX |
| 50 | |
| 51 | typedef USHORT gid16_t; |
| 52 | |
| 53 | #define MAX_GID16_T USHRT_MAX |
| 54 | |
| 55 | int GetSetId0(PLXT_ARGS Args); |
| 56 | |
| 57 | int GetSetId1(PLXT_ARGS Args); |
| 58 | |
| 59 | int GetSetIdParseArgs(int Argc, char* Argv[], LXT_ARGS* Args); |
| 60 | |
| 61 | int GetSetPgid(PLXT_ARGS Args); |
| 62 | |
| 63 | int GetSetPgidChildProcess(void); |
| 64 | |
| 65 | int GetSetPgidChildProcess2(pid_t GroupId); |
| 66 | |
| 67 | int GetSetPgidExecve(PLXT_ARGS Args); |
| 68 | |
| 69 | int GetSetPgidExecveChild(void); |
| 70 | |
| 71 | int GetSetSid(PLXT_ARGS Args); |
| 72 | |
| 73 | // |
| 74 | // Global constants |
| 75 | // |
| 76 | |
| 77 | static const LXT_VARIATION g_LxtVariations[] = { |
| 78 | {"GetSetId Basic", GetSetId0}, |
| 79 | {"GetResuid-GetResgid Basic", GetSetId1}, |
| 80 | |
| 81 | #if !defined(__amd64__) && !defined(__aarch64__) |
| 82 | {"GetSetId 16-bit versions", GetSetId16Bit}, |
| 83 | #endif |
| 84 | {"GetSetPgid Basic", GetSetPgid}, |
| 85 | {"GetSetPgid with execve", GetSetPgidExecve}, |
| 86 | {"GetSetSid Basic", GetSetSid}}; |
| 87 | |
| 88 | static const char* g_SocketPath = "/data/test/lxt_get_set_id_sock"; |
| 89 | |
| 90 | int GetSetIdTestEntry(int Argc, char* Argv[]) |
| 91 | |
| 92 | /*++ |
| 93 | |
| 94 | Routine Description: |
| 95 | |
| 96 | This routine main entry point for the test for get*id,set*id system call. |
| 97 | |
| 98 | Arguments: |
| 99 | |
| 100 | Argc - Supplies the number of command line arguments. |
| 101 | |
| 102 | Argv - Supplies the command line arguments. |
| 103 | |
| 104 | Return Value: |
| 105 | |
| 106 | Returns 0 on success, -1 on failure. |
| 107 | |
| 108 | --*/ |
| 109 | |
| 110 | { |
| 111 | |
| 112 | LXT_ARGS Args; |
| 113 | int Result; |
| 114 | |
| 115 | LxtCheckResult(GetSetIdParseArgs(Argc, Argv, &Args)); |
| 116 | ErrorExit: |
| 117 | LxtUninitialize(); |
| 118 | return !LXT_SUCCESS(Result); |
| 119 | } |
| 120 | |
| 121 | int GetSetId0(PLXT_ARGS Args) |
| 122 | |
| 123 | /*++ |
| 124 | |
| 125 | Routine Description: |
| 126 | |
| 127 | This routine validates the various get*id and set*id system |
| 128 | calls. |
| 129 | |
| 130 | Arguments: |
| 131 | |
| 132 | Args - Supplies the command line arguments. |
| 133 | |
| 134 | Return Value: |
| 135 | |
| 136 | Returns 0 on success, -1 on failure. |
| 137 | |
| 138 | --*/ |
| 139 | |
| 140 | { |
| 141 | |
| 142 | gid_t Egid; |
| 143 | gid_t EgidFromGetResgid; |
| 144 | uid_t Euid; |
| 145 | uid_t EuidFromGetResuid; |
| 146 | gid_t Gid; |
| 147 | gid_t GidFromGetResgid; |
| 148 | pid_t Pgid; |
| 149 | pid_t Pgid0; |
| 150 | pid_t Pid; |
| 151 | pid_t Ppid; |
| 152 | int Result; |
| 153 | uid_t SuidFromGetResuid; |
| 154 | gid_t SgidFromGetResgid; |
| 155 | pid_t Tid; |
| 156 | uid_t Uid; |
| 157 | uid_t UidFromGetResuid; |
| 158 | |
| 159 | Pid = getpid(); |
| 160 | Ppid = getppid(); |
| 161 | Gid = getgid(); |
| 162 | Egid = getegid(); |
| 163 | Uid = getuid(); |
| 164 | Euid = geteuid(); |
| 165 | Tid = gettid(); |
| 166 | LxtCheckResult((Pgid0 = getpgid(0))); |
| 167 | LxtCheckResult((Pgid = getpgid(Pid))); |
| 168 | LxtCheckErrnoFailure(getpgid(-1), ESRCH); |
| 169 | LxtCheckResult(getresuid(&UidFromGetResuid, &EuidFromGetResuid, &SuidFromGetResuid)); |
| 170 | |
| 171 | LxtCheckResult(getresgid(&GidFromGetResgid, &EgidFromGetResgid, &SgidFromGetResgid)); |
| 172 | |
| 173 | LxtLogInfo( |
| 174 | "ID Details. Pid:%d, Ppid:%d, Gid:%u, Egid:%u, Uid:%u, " |
| 175 | "Euid:%u, Tid:%u, Pgid:%d, Uid From GetResuid:%u, " |
| 176 | "Euid From GetResuid:%u, Suid From GetResuid:%u, Gid From " |
| 177 | "GetResgid:%u, Egid From GetResgid:%u, Sgid From GetResgid:%u", |
| 178 | Pid, |
| 179 | Ppid, |
| 180 | Gid, |
| 181 | Egid, |
| 182 | Uid, |
| 183 | Euid, |
| 184 | Tid, |
| 185 | Pgid, |
| 186 | UidFromGetResuid, |
| 187 | EuidFromGetResuid, |
| 188 | SuidFromGetResuid, |
| 189 | GidFromGetResgid, |
| 190 | EgidFromGetResgid, |
| 191 | SgidFromGetResgid); |
| 192 | |
| 193 | // |
| 194 | // getpgid(Pid) == getpgid(0) |
| 195 | // |
| 196 | |
| 197 | if (Pgid != Pgid0) |
| 198 | { |
| 199 | LxtLogError( |
| 200 | "getpgid(<self>) == getpgid(0). getpgid(<self>):%d, " |
| 201 | "getpgid(0): %d", |
| 202 | Pgid, |
| 203 | Pgid0); |
| 204 | Result = LXT_RESULT_FAILURE; |
| 205 | goto ErrorExit; |
| 206 | } |
| 207 | |
| 208 | // |
| 209 | // For a single threaded process, Thread ID == Process ID |
| 210 | // |
| 211 | |
| 212 | if (Pid != Tid) |
| 213 | { |
| 214 | LxtLogError( |
| 215 | "For a single threaded process, Process ID == Thread ID. " |
| 216 | "Process ID:%u, Thread ID:%u", |
| 217 | Pid, |
| 218 | Tid); |
| 219 | Result = LXT_RESULT_FAILURE; |
| 220 | goto ErrorExit; |
| 221 | } |
| 222 | |
| 223 | // |
| 224 | // ID's from get*id and getresuid/getresgid should match |
| 225 | // |
| 226 | |
| 227 | if (Uid != UidFromGetResuid) |
| 228 | { |
| 229 | LxtLogError( |
| 230 | "UID from getuid and getresuid do not match. " |
| 231 | "uid from getuid:%u, uid from getresuid:%u", |
| 232 | Uid, |
| 233 | UidFromGetResuid); |
| 234 | Result = LXT_RESULT_FAILURE; |
| 235 | goto ErrorExit; |
| 236 | } |
| 237 | |
| 238 | if (Euid != EuidFromGetResuid) |
| 239 | { |
| 240 | LxtLogError( |
| 241 | "EUID from geteuid and getresuid do not match. " |
| 242 | "euid from getuid:%u, euid from getresuid:%u", |
| 243 | Euid, |
| 244 | EuidFromGetResuid); |
| 245 | Result = LXT_RESULT_FAILURE; |
| 246 | goto ErrorExit; |
| 247 | } |
| 248 | |
| 249 | if (Gid != GidFromGetResgid) |
| 250 | { |
| 251 | LxtLogError( |
| 252 | "GID from getgid and getresgid do not match. " |
| 253 | "gid from getgid:%u, gid from getresgid:%u", |
| 254 | Gid, |
| 255 | GidFromGetResgid); |
| 256 | Result = LXT_RESULT_FAILURE; |
| 257 | goto ErrorExit; |
| 258 | } |
| 259 | |
| 260 | if ((Egid != EgidFromGetResgid)) |
| 261 | { |
| 262 | LxtLogError( |
| 263 | "EGID from getegid and getresgid do not match. " |
| 264 | "egid from getegid:%u, egid from getresgid:%u", |
| 265 | Egid, |
| 266 | EgidFromGetResgid); |
| 267 | Result = LXT_RESULT_FAILURE; |
| 268 | goto ErrorExit; |
| 269 | } |
| 270 | |
| 271 | Result = LXT_RESULT_SUCCESS; |
| 272 | |
| 273 | ErrorExit: |
| 274 | return Result; |
| 275 | } |
| 276 | |
| 277 | int GetSetId1(PLXT_ARGS Args) |
| 278 | |
| 279 | /*++ |
| 280 | |
| 281 | Routine Description: |
| 282 | |
| 283 | This routine validates the GetResuid/GetResgid system calls. |
| 284 | |
| 285 | Arguments: |
| 286 | |
| 287 | Args - Supplies the command line arguments. |
| 288 | |
| 289 | Return Value: |
| 290 | |
| 291 | Returns 0 on success, -1 on failure. |
| 292 | |
| 293 | --*/ |
| 294 | |
| 295 | { |
| 296 | |
| 297 | gid_t EgidFromGetResgid; |
| 298 | uid_t EuidFromGetResuid; |
| 299 | gid_t GidFromGetResgid; |
| 300 | int Result; |
| 301 | uid_t SuidFromGetResuid; |
| 302 | gid_t SgidFromGetResgid; |
| 303 | uid_t UidFromGetResuid; |
| 304 | |
| 305 | LxtCheckErrnoFailure(getresuid(NULL, NULL, NULL), EFAULT); |
| 306 | |
| 307 | LxtCheckErrnoFailure(getresuid(&UidFromGetResuid, NULL, NULL), EFAULT); |
| 308 | |
| 309 | LxtCheckErrnoFailure(getresuid(NULL, &EuidFromGetResuid, &SuidFromGetResuid), EFAULT); |
| 310 | |
| 311 | LxtCheckResult(getresuid(&UidFromGetResuid, &EuidFromGetResuid, &SuidFromGetResuid)); |
| 312 | LxtCheckErrnoFailure(getresgid(NULL, NULL, NULL), EFAULT); |
| 313 | |
| 314 | LxtCheckErrnoFailure(getresgid(&GidFromGetResgid, NULL, NULL), EFAULT); |
| 315 | |
| 316 | LxtCheckErrnoFailure(getresgid(NULL, &EgidFromGetResgid, &SgidFromGetResgid), EFAULT); |
| 317 | |
| 318 | LxtCheckResult(getresgid(&GidFromGetResgid, &EgidFromGetResgid, &SgidFromGetResgid)); |
| 319 | |
| 320 | Result = LXT_RESULT_SUCCESS; |
| 321 | |
| 322 | ErrorExit: |
| 323 | return Result; |
| 324 | } |
| 325 | |
| 326 | #if !defined(__amd64__) && !defined(__aarch64__) |
| 327 | |
| 328 | int GetSetId16Bit(PLXT_ARGS Args) |
| 329 | |
| 330 | /*++ |
| 331 | |
| 332 | Routine Description: |
| 333 | |
| 334 | This routine validates the various 16-bit versions of the |
| 335 | get*id and set*id system calls. |
| 336 | |
| 337 | Arguments: |
| 338 | |
| 339 | Args - Supplies the command line arguments. |
| 340 | |
| 341 | Return Value: |
| 342 | |
| 343 | Returns 0 on success, -1 on failure. |
| 344 | |
| 345 | --*/ |
| 346 | |
| 347 | { |
| 348 | |
| 349 | gid_t Egid; |
| 350 | gid16_t Egid16; |
| 351 | gid16_t EgidFromGetResgid16; |
| 352 | uid_t Euid; |
| 353 | uid16_t Euid16; |
| 354 | uid16_t EuidFromGetResuid16; |
| 355 | gid_t Gid; |
| 356 | gid16_t Gid16; |
| 357 | gid16_t GidFromGetResgid16; |
| 358 | int Result; |
| 359 | uid16_t SuidFromGetResuid16; |
| 360 | gid16_t SgidFromGetResgid16; |
| 361 | uid_t Uid; |
| 362 | uid16_t Uid16; |
| 363 | uid16_t UidFromGetResuid16; |
| 364 | |
| 365 | Gid = getgid(); |
| 366 | Gid16 = 0; |
| 367 | Egid = getegid(); |
| 368 | Uid = getuid(); |
| 369 | Uid16 = 0; |
| 370 | Euid = geteuid(); |
| 371 | |
| 372 | LxtLogInfo("UID and GID Details. Gid:%d, Egid:%d, Uid:%u, Euid:%u", Gid, Egid, Uid, Euid); |
| 373 | |
| 374 | // |
| 375 | // Before calling the 16-bit versions, make sure the IDs are |
| 376 | // within the range. |
| 377 | // |
| 378 | |
| 379 | if (Gid <= MAX_GID16_T) |
| 380 | { |
| 381 | Gid16 = syscall(__NR_getgid16); |
| 382 | if (Gid != Gid16) |
| 383 | { |
| 384 | LxtLogError( |
| 385 | "GID from getgid and getgid16 do not match. " |
| 386 | "gid from getgid:%d, gid from getgid16:%d", |
| 387 | Gid, |
| 388 | Gid16); |
| 389 | Result = LXT_RESULT_FAILURE; |
| 390 | goto ErrorExit; |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | if (Egid <= MAX_GID16_T) |
| 395 | { |
| 396 | Egid16 = syscall(__NR_getegid16); |
| 397 | if (Egid != Egid16) |
| 398 | { |
| 399 | LxtLogError( |
| 400 | "EGID from getegid and getegid16 do not match. " |
| 401 | "egid from getegid:%d, egid from getegid16:%d", |
| 402 | Egid, |
| 403 | Egid16); |
| 404 | Result = LXT_RESULT_FAILURE; |
| 405 | goto ErrorExit; |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | if ((Gid <= MAX_GID16_T) && (Egid <= MAX_GID16_T)) |
| 410 | { |
| 411 | LxtCheckResult(syscall(__NR_getresgid16, &GidFromGetResgid16, &EgidFromGetResgid16, &SgidFromGetResgid16)); |
| 412 | |
| 413 | LxtLogInfo("SGID16:%d", SgidFromGetResgid16); |
| 414 | |
| 415 | if (Gid16 != GidFromGetResgid16) |
| 416 | { |
| 417 | LxtLogError( |
| 418 | "GID from getgid16 and getresgid16 do not match. " |
| 419 | "gid from getgid16:%d, gid from getresgid16:%d", |
| 420 | Gid16, |
| 421 | GidFromGetResgid16); |
| 422 | Result = LXT_RESULT_FAILURE; |
| 423 | goto ErrorExit; |
| 424 | } |
| 425 | |
| 426 | if ((Egid16 != EgidFromGetResgid16)) |
| 427 | { |
| 428 | LxtLogError( |
| 429 | "EGID from getegid16 and getresgid16 do not match. " |
| 430 | "egid from getegid16:%d, egid from getresgid16:%d", |
| 431 | Egid16, |
| 432 | EgidFromGetResgid16); |
| 433 | Result = LXT_RESULT_FAILURE; |
| 434 | goto ErrorExit; |
| 435 | } |
| 436 | |
| 437 | LxtCheckErrnoFailure(syscall(__NR_getresgid16, NULL, NULL, NULL), EFAULT); |
| 438 | |
| 439 | LxtCheckErrnoFailure(syscall(__NR_getresgid16, &GidFromGetResgid16, NULL, NULL), EFAULT); |
| 440 | |
| 441 | LxtCheckErrnoFailure(syscall(__NR_getresgid16, NULL, &EgidFromGetResgid16, &SgidFromGetResgid16), EFAULT); |
| 442 | } |
| 443 | |
| 444 | if (Uid <= MAX_UID16_T) |
| 445 | { |
| 446 | Uid16 = syscall(__NR_getuid16); |
| 447 | if (Uid != Uid16) |
| 448 | { |
| 449 | LxtLogError( |
| 450 | "UID from getuid and getuid16 do not match. " |
| 451 | "uid from getuid:%d, uid from getuid16:%d", |
| 452 | Uid, |
| 453 | Uid16); |
| 454 | Result = LXT_RESULT_FAILURE; |
| 455 | goto ErrorExit; |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | if (Euid <= MAX_UID16_T) |
| 460 | { |
| 461 | Euid16 = syscall(__NR_geteuid16); |
| 462 | if (Euid != Euid16) |
| 463 | { |
| 464 | LxtLogError( |
| 465 | "EUID from geteuid and geteuid16 do not match. " |
| 466 | "egid from geteuid:%d, egid from geteuid16:%d", |
| 467 | Euid, |
| 468 | Euid16); |
| 469 | Result = LXT_RESULT_FAILURE; |
| 470 | goto ErrorExit; |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | if ((Uid <= MAX_UID16_T) && (Euid <= MAX_UID16_T)) |
| 475 | { |
| 476 | LxtCheckResult(syscall(__NR_getresuid16, &UidFromGetResuid16, &EuidFromGetResuid16, &SuidFromGetResuid16)); |
| 477 | |
| 478 | LxtLogInfo("SUID16:%d", SuidFromGetResuid16); |
| 479 | |
| 480 | if (Uid16 != UidFromGetResuid16) |
| 481 | { |
| 482 | LxtLogError( |
| 483 | "UID from getuid16 and getresuid16 do not match. " |
| 484 | "uid from getuid16:%d, uid from getresuid16:%d", |
| 485 | Uid16, |
| 486 | UidFromGetResuid16); |
| 487 | Result = LXT_RESULT_FAILURE; |
| 488 | goto ErrorExit; |
| 489 | } |
| 490 | |
| 491 | if (Euid16 != EuidFromGetResuid16) |
| 492 | { |
| 493 | LxtLogError( |
| 494 | "EUID from geteuid16 and getresuid16 do not match. " |
| 495 | "euid from getuid16:%d, euid from getresuid16:%d", |
| 496 | Euid16, |
| 497 | EuidFromGetResuid16); |
| 498 | Result = LXT_RESULT_FAILURE; |
| 499 | goto ErrorExit; |
| 500 | } |
| 501 | |
| 502 | LxtCheckErrnoFailure(syscall(__NR_getresuid16, NULL, NULL, NULL), EFAULT); |
| 503 | |
| 504 | LxtCheckErrnoFailure(syscall(__NR_getresuid16, &UidFromGetResuid16, NULL, NULL), EFAULT); |
| 505 | |
| 506 | LxtCheckErrnoFailure(syscall(__NR_getresuid16, NULL, &EuidFromGetResuid16, &SuidFromGetResuid16), EFAULT); |
| 507 | } |
| 508 | |
| 509 | Result = LXT_RESULT_SUCCESS; |
| 510 | |
| 511 | ErrorExit: |
| 512 | return Result; |
| 513 | } |
| 514 | |
| 515 | #endif |
| 516 | |
| 517 | int GetSetIdParseArgs(int Argc, char* Argv[], LXT_ARGS* Args) |
| 518 | |
| 519 | /*++ |
| 520 | |
| 521 | Routine Description: |
| 522 | |
| 523 | This routine parses command line arguments for the get_set_id tests. |
| 524 | |
| 525 | Arguments: |
| 526 | |
| 527 | Argc - Supplies the number of arguments. |
| 528 | |
| 529 | Argv - Supplies an array of arguments. |
| 530 | |
| 531 | Return Value: |
| 532 | |
| 533 | Returns 0 on success, -1 on failure. |
| 534 | |
| 535 | --*/ |
| 536 | |
| 537 | { |
| 538 | |
| 539 | int ArgvIndex; |
| 540 | int Result; |
| 541 | int ValidArguments; |
| 542 | |
| 543 | Result = LXT_RESULT_FAILURE; |
| 544 | ValidArguments = 0; |
| 545 | |
| 546 | if (Argc < 1) |
| 547 | { |
| 548 | goto ErrorExit; |
| 549 | } |
| 550 | |
| 551 | for (ArgvIndex = 1; ArgvIndex < Argc; ++ArgvIndex) |
| 552 | { |
| 553 | if (Argv[ArgvIndex][0] != '-') |
| 554 | { |
| 555 | printf("Unexpected character %s", Argv[ArgvIndex]); |
| 556 | goto ErrorExit; |
| 557 | } |
| 558 | |
| 559 | switch (Argv[ArgvIndex][1]) |
| 560 | { |
| 561 | case 'c': |
| 562 | |
| 563 | // |
| 564 | // Run the setpgid execve test child |
| 565 | // |
| 566 | |
| 567 | ValidArguments = 1; |
| 568 | Result = GetSetPgidExecveChild(); |
| 569 | goto ErrorExit; |
| 570 | |
| 571 | case 'v': |
| 572 | |
| 573 | // |
| 574 | // This was already taken care of by LxtInitialize. |
| 575 | // |
| 576 | |
| 577 | ++ArgvIndex; |
| 578 | |
| 579 | break; |
| 580 | |
| 581 | default: |
| 582 | goto ErrorExit; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | // |
| 587 | // If -c was not specified, just run the tests |
| 588 | // |
| 589 | |
| 590 | ValidArguments = 1; |
| 591 | LxtCheckResult(LxtInitialize(Argc, Argv, Args, LXT_NAME)); |
| 592 | LxtCheckResult(LxtRunVariations(Args, g_LxtVariations, LXT_COUNT_OF(g_LxtVariations))); |
| 593 | |
| 594 | ErrorExit: |
| 595 | if (ValidArguments == 0) |
| 596 | { |
| 597 | printf("\nuse: get_set_id <One of the below arguments>"); |
| 598 | printf("\t-c : Run getsetpgid execve test child (don't use directly)"); |
| 599 | } |
| 600 | |
| 601 | return Result; |
| 602 | } |
| 603 | |
| 604 | int GetSetPgid(PLXT_ARGS Args) |
| 605 | |
| 606 | /*++ |
| 607 | |
| 608 | Routine Description: |
| 609 | |
| 610 | This routine validates the getpgid and setpgid system calls. |
| 611 | |
| 612 | Arguments: |
| 613 | |
| 614 | Args - Supplies the command line arguments. |
| 615 | |
| 616 | Return Value: |
| 617 | |
| 618 | Returns 0 on success, -1 on failure. |
| 619 | |
| 620 | --*/ |
| 621 | |
| 622 | { |
| 623 | |
| 624 | const int Processes = 2; |
| 625 | |
| 626 | pid_t Child; |
| 627 | pid_t GroupId; |
| 628 | pid_t NewGroup; |
| 629 | int Process; |
| 630 | pid_t ProcessIds[2]; |
| 631 | int Result; |
| 632 | int Status; |
| 633 | |
| 634 | // |
| 635 | // Check that a child process initially inherits our process group ID. |
| 636 | // |
| 637 | |
| 638 | LxtCheckErrno(Child = fork()); |
| 639 | if (Child == 0) |
| 640 | { |
| 641 | _exit(GetSetPgidChildProcess()); |
| 642 | } |
| 643 | |
| 644 | LxtCheckResult(LxtWaitPidPoll(Child, 0)); |
| 645 | |
| 646 | // |
| 647 | // Create two processes; the first will be the group leader and the second |
| 648 | // will use the group id of the first. The method used here reflects how |
| 649 | // job control shells create groups for pipelines. |
| 650 | // |
| 651 | |
| 652 | GroupId = 0; |
| 653 | for (Process = 0; Process < Processes; Process += 1) |
| 654 | { |
| 655 | LxtCheckErrno(Child = fork()); |
| 656 | ProcessIds[Process] = Child; |
| 657 | if (Child == 0) |
| 658 | { |
| 659 | _exit(GetSetPgidChildProcess2(GroupId)); |
| 660 | } |
| 661 | |
| 662 | if (GroupId == 0) |
| 663 | { |
| 664 | GroupId = Child; |
| 665 | } |
| 666 | |
| 667 | LxtCheckErrnoZeroSuccess(setpgid(Child, GroupId)); |
| 668 | LxtCheckErrno(NewGroup = getpgid(Child)); |
| 669 | if (NewGroup != GroupId) |
| 670 | { |
| 671 | LxtLogError( |
| 672 | "getpgid() return value does not match the " |
| 673 | "value set by setpgid. Expected: %i; actual: %i", |
| 674 | GroupId, |
| 675 | NewGroup); |
| 676 | |
| 677 | Result = LXT_RESULT_FAILURE; |
| 678 | goto ErrorExit; |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | for (Process = 0; Process < Processes; Process += 1) |
| 683 | { |
| 684 | LxtCheckResult(LxtWaitPidPoll(ProcessIds[Process], 0)); |
| 685 | } |
| 686 | |
| 687 | // |
| 688 | // After the child processes were waited on, the process group is no longer |
| 689 | // valid, nor are the children pids. There is currently a race condition |
| 690 | // that causes waitpid to return before the process group is cleaned up |
| 691 | // so sleep before trying this. |
| 692 | // |
| 693 | |
| 694 | sleep(1); |
| 695 | LxtCheckErrnoFailure(setpgid(0, GroupId), EPERM); |
| 696 | LxtCheckErrnoFailure(setpgid(ProcessIds[0], 0), ESRCH); |
| 697 | LxtCheckErrnoFailure(getpgid(ProcessIds[0]), ESRCH); |
| 698 | |
| 699 | // |
| 700 | // Getpgid for non-child process should succeed, setpgid should fail |
| 701 | // |
| 702 | |
| 703 | LxtCheckErrno(getpgid(getppid())); |
| 704 | LxtCheckErrnoFailure(setpgid(getppid(), 0), ESRCH); |
| 705 | |
| 706 | // |
| 707 | // Cannot change process group of session leader. |
| 708 | // |
| 709 | |
| 710 | LxtCheckResult(LxtSignalBlock(SIGUSR1)); |
| 711 | LxtCheckErrno(Child = fork()); |
| 712 | if (Child == 0) |
| 713 | { |
| 714 | LxtCheckErrno(setsid()); |
| 715 | LxtCheckErrnoFailure(setpgid(0, getppid()), EPERM); |
| 716 | LxtCheckErrnoFailure(setpgid(0, 0), EPERM); |
| 717 | LxtCheckErrnoZeroSuccess(kill(getppid(), SIGUSR1)); |
| 718 | LxtCheckResult(LxtSignalWaitBlocked(SIGUSR1, getppid(), 2)); |
| 719 | _exit(LXT_RESULT_SUCCESS); |
| 720 | } |
| 721 | |
| 722 | LxtCheckResult(LxtSignalWaitBlocked(SIGUSR1, Child, 2)); |
| 723 | LxtCheckErrnoFailure(setpgid(Child, 0), EPERM); |
| 724 | LxtCheckErrnoFailure(setpgid(Child, getpgid(0)), EPERM); |
| 725 | |
| 726 | // |
| 727 | // Cannot change to process group which is in a different session. |
| 728 | // |
| 729 | |
| 730 | LxtCheckErrnoFailure(setpgid(0, Child), EPERM); |
| 731 | |
| 732 | // |
| 733 | // Tell the child to exit. |
| 734 | // |
| 735 | |
| 736 | LxtCheckErrnoZeroSuccess(kill(Child, SIGUSR1)); |
| 737 | LxtCheckResult(LxtWaitPidPoll(Child, 0)); |
| 738 | |
| 739 | // |
| 740 | // Bogus pid and pgid values. The fact that setpgid returns different |
| 741 | // errors for a negative pid if pgid==0 is consistent with Linux. |
| 742 | // |
| 743 | |
| 744 | LxtCheckErrnoFailure(getpgid(-1), ESRCH); |
| 745 | LxtCheckErrnoFailure(setpgid(-1, 1), ESRCH); |
| 746 | LxtCheckErrnoFailure(setpgid(-1, 0), EINVAL); |
| 747 | LxtCheckErrnoFailure(setpgid(0, -1), EINVAL); |
| 748 | |
| 749 | ErrorExit: |
| 750 | return Result; |
| 751 | } |
| 752 | |
| 753 | int GetSetPgidChildProcess(void) |
| 754 | |
| 755 | /*++ |
| 756 | |
| 757 | Routine Description: |
| 758 | |
| 759 | This routine runs the child process for GetSetPgid that checks its pgid. |
| 760 | |
| 761 | Arguments: |
| 762 | |
| 763 | None. |
| 764 | |
| 765 | Return Value: |
| 766 | |
| 767 | Returns 0 on success, -1 on failure. |
| 768 | |
| 769 | --*/ |
| 770 | |
| 771 | { |
| 772 | |
| 773 | pid_t Parent; |
| 774 | pid_t ParentGroupId; |
| 775 | pid_t GroupId; |
| 776 | int Result; |
| 777 | |
| 778 | Parent = getppid(); |
| 779 | LxtCheckErrno(ParentGroupId = getpgid(Parent)); |
| 780 | LxtCheckErrno(GroupId = getpgid(0)); |
| 781 | LxtLogInfo("Process %i pgid: %i, parent %i pgid: %i", getpid(), GroupId, Parent, ParentGroupId); |
| 782 | |
| 783 | Result = LXT_RESULT_FAILURE; |
| 784 | if (GroupId == 0) |
| 785 | { |
| 786 | LxtLogError("Group ID should never be zero."); |
| 787 | goto ErrorExit; |
| 788 | } |
| 789 | |
| 790 | if (GroupId != ParentGroupId) |
| 791 | { |
| 792 | LxtLogError("Pgid %i did not match parent pgid %i", GroupId, ParentGroupId); |
| 793 | |
| 794 | goto ErrorExit; |
| 795 | } |
| 796 | |
| 797 | Result = LXT_RESULT_SUCCESS; |
| 798 | |
| 799 | ErrorExit: |
| 800 | return Result; |
| 801 | } |
| 802 | |
| 803 | int GetSetPgidChildProcess2(pid_t GroupId) |
| 804 | |
| 805 | /*++ |
| 806 | |
| 807 | Routine Description: |
| 808 | |
| 809 | This routine runs the child processes for GetSetPgid that set their pgid. |
| 810 | |
| 811 | Arguments: |
| 812 | |
| 813 | GroupId - The process group ID for this child process (0 if this is the |
| 814 | new leader) |
| 815 | |
| 816 | Return Value: |
| 817 | |
| 818 | Returns 0 on success, -1 on failure. |
| 819 | |
| 820 | --*/ |
| 821 | |
| 822 | { |
| 823 | |
| 824 | int NewGroup; |
| 825 | int Pid; |
| 826 | int Result; |
| 827 | LxtCheckErrnoZeroSuccess(setpgid(0, GroupId)); |
| 828 | |
| 829 | // |
| 830 | // If we were passed 0, the expected result should match the process ID. |
| 831 | // |
| 832 | |
| 833 | Pid = getpid(); |
| 834 | if (GroupId == 0) |
| 835 | { |
| 836 | GroupId = Pid; |
| 837 | } |
| 838 | |
| 839 | LxtCheckErrno(NewGroup = getpgid(0)); |
| 840 | if (NewGroup != GroupId) |
| 841 | { |
| 842 | LxtLogError( |
| 843 | "getpgid(0) return value does not match the value set by " |
| 844 | "setpgid. Expected: %i; actual: %i", |
| 845 | GroupId, |
| 846 | NewGroup); |
| 847 | |
| 848 | Result = LXT_RESULT_FAILURE; |
| 849 | goto ErrorExit; |
| 850 | } |
| 851 | |
| 852 | LxtLogInfo("Process %i pgid: %i", Pid, NewGroup); |
| 853 | |
| 854 | LxtCheckErrno(NewGroup = getpgid(Pid)); |
| 855 | if (NewGroup != GroupId) |
| 856 | { |
| 857 | LxtLogError( |
| 858 | "getpgid(getpid()) return value does not match the value " |
| 859 | "set by setpgid. Expected: %i; actual: %i", |
| 860 | GroupId, |
| 861 | NewGroup); |
| 862 | |
| 863 | Result = LXT_RESULT_FAILURE; |
| 864 | goto ErrorExit; |
| 865 | } |
| 866 | |
| 867 | // |
| 868 | // The sleep is to keep the group alive until the second process |
| 869 | // runs. Remove it once zombie processes are implemented. |
| 870 | // |
| 871 | |
| 872 | sleep(1); |
| 873 | |
| 874 | Result = LXT_RESULT_SUCCESS; |
| 875 | |
| 876 | ErrorExit: |
| 877 | return Result; |
| 878 | } |
| 879 | |
| 880 | int GetSetPgidExecve(PLXT_ARGS Args) |
| 881 | |
| 882 | /*++ |
| 883 | |
| 884 | Routine Description: |
| 885 | |
| 886 | This routine checks whether setpgid returns the correct failure if it is |
| 887 | called on a process that has already called execve. |
| 888 | |
| 889 | Arguments: |
| 890 | |
| 891 | Args - Supplies the command line arguments. |
| 892 | |
| 893 | Return Value: |
| 894 | |
| 895 | Returns 0 on success, -1 on failure. |
| 896 | |
| 897 | --*/ |
| 898 | |
| 899 | { |
| 900 | |
| 901 | struct sockaddr_un Address; |
| 902 | int ClientSocket; |
| 903 | char* Argv[4]; |
| 904 | char* Envp[1]; |
| 905 | int Result; |
| 906 | int ServerSocket; |
| 907 | int Status; |
| 908 | int Child; |
| 909 | |
| 910 | ClientSocket = -1; |
| 911 | Child = -1; |
| 912 | |
| 913 | // |
| 914 | // To make sure we call setpgid after the child process runs execve and |
| 915 | // before it exits, we use a unix socket to let the child signal us when |
| 916 | // it's running, and then we signal the child to exit after the test. |
| 917 | // |
| 918 | |
| 919 | LxtCheckErrno(ServerSocket = socket(AF_UNIX, SOCK_STREAM, 0)); |
| 920 | |
| 921 | // |
| 922 | // Remove the path name in case it exists from a failed prior test run; |
| 923 | // ignore errors. |
| 924 | // |
| 925 | |
| 926 | unlink(g_SocketPath); |
| 927 | |
| 928 | // |
| 929 | // Bind to the address and start listening |
| 930 | // |
| 931 | |
| 932 | memset(&Address, 0, sizeof(Address)); |
| 933 | Address.sun_family = AF_UNIX; |
| 934 | strncpy(Address.sun_path, g_SocketPath, sizeof(Address.sun_path) - 1); |
| 935 | Address.sun_path[sizeof(Address.sun_path) - 1] = 0; |
| 936 | LxtCheckErrnoZeroSuccess(bind(ServerSocket, (struct sockaddr*)&Address, sizeof(Address))); |
| 937 | LxtCheckErrnoZeroSuccess(listen(ServerSocket, 1)); |
| 938 | |
| 939 | // |
| 940 | // Start the child process. |
| 941 | // |
| 942 | |
| 943 | LxtCheckErrno(Child = fork()); |
| 944 | if (Child == 0) |
| 945 | { |
| 946 | Argv[0] = WSL_UNIT_TEST_BINARY; // adhere to new single test binary design |
| 947 | Argv[1] = Args->Argv[0]; |
| 948 | Argv[2] = "-c"; |
| 949 | Argv[3] = Envp[0] = NULL; |
| 950 | execve(Argv[0], Argv, Envp); |
| 951 | LxtLogError("Execve failed, errno: %d (%s)", errno, strerror(errno)); |
| 952 | _exit(LXT_RESULT_FAILURE); |
| 953 | } |
| 954 | |
| 955 | // |
| 956 | // Wait for the client to tell us it's running; this guarantees we |
| 957 | // call setpgid after the execve call. |
| 958 | // |
| 959 | |
| 960 | LxtCheckErrno(ClientSocket = accept(ServerSocket, NULL, NULL)); |
| 961 | LxtCheckResult(LxtReceiveMessage(ClientSocket, "execve")); |
| 962 | |
| 963 | // |
| 964 | // The child is now running inside the binary loaded by execve, so we |
| 965 | // can try to call setpgid, which should fail with EACCES. |
| 966 | // |
| 967 | |
| 968 | LxtCheckErrnoFailure(setpgid(Child, 0), EACCES); |
| 969 | |
| 970 | // |
| 971 | // Tell the client it can exit. |
| 972 | // |
| 973 | |
| 974 | LxtCheckResult(LxtSendMessage(ClientSocket, "exit")) LxtCheckResult(LxtWaitPidPoll(Child, 0)); |
| 975 | |
| 976 | ErrorExit: |
| 977 | if (ClientSocket >= 0) |
| 978 | { |
| 979 | close(ClientSocket); |
| 980 | } |
| 981 | |
| 982 | if (ServerSocket >= 0) |
| 983 | { |
| 984 | close(ServerSocket); |
| 985 | } |
| 986 | |
| 987 | unlink(g_SocketPath); |
| 988 | |
| 989 | return Result; |
| 990 | } |
| 991 | |
| 992 | int GetSetPgidExecveChild(void) |
| 993 | |
| 994 | /*++ |
| 995 | |
| 996 | Routine Description: |
| 997 | |
| 998 | This routine runs the child process for GetSetPgidExecve. |
| 999 | |
| 1000 | Arguments: |
| 1001 | |
| 1002 | None. |
| 1003 | |
| 1004 | Return Value: |
| 1005 | |
| 1006 | Returns 0 on success, -1 on failure. |
| 1007 | |
| 1008 | --*/ |
| 1009 | |
| 1010 | { |
| 1011 | |
| 1012 | struct sockaddr_un Address; |
| 1013 | int ClientSocket; |
| 1014 | int Result; |
| 1015 | |
| 1016 | LxtLogInfo("Child executable running, pid = %i", getpid()); |
| 1017 | LxtCheckErrno(ClientSocket = socket(AF_UNIX, SOCK_STREAM, 0)); |
| 1018 | |
| 1019 | // |
| 1020 | // Connect to the parent process via AF_UNIX socket. |
| 1021 | // |
| 1022 | |
| 1023 | memset(&Address, 0, sizeof(Address)); |
| 1024 | Address.sun_family = AF_UNIX; |
| 1025 | strncpy(Address.sun_path, g_SocketPath, sizeof(Address.sun_path) - 1); |
| 1026 | Address.sun_path[sizeof(Address.sun_path) - 1] = 0; |
| 1027 | LxtCheckErrnoZeroSuccess(connect(ClientSocket, (struct sockaddr*)&Address, sizeof(Address))); |
| 1028 | |
| 1029 | // |
| 1030 | // Tell the parent that the process is running inside the execve'd binary. |
| 1031 | // |
| 1032 | |
| 1033 | LxtCheckResult(LxtSendMessage(ClientSocket, "execve")); |
| 1034 | |
| 1035 | // |
| 1036 | // Wait for the parent to tell this process it can exit so it has the |
| 1037 | // chance to call setpgid. |
| 1038 | // |
| 1039 | |
| 1040 | LxtCheckResult(LxtReceiveMessage(ClientSocket, "exit")); |
| 1041 | |
| 1042 | // |
| 1043 | // This process should be able to change its own process group. |
| 1044 | // |
| 1045 | |
| 1046 | LxtCheckErrnoZeroSuccess(setpgid(0, 0)); |
| 1047 | LxtLogInfo("Child executable finished"); |
| 1048 | Result = LXT_RESULT_SUCCESS; |
| 1049 | |
| 1050 | ErrorExit: |
| 1051 | if (ClientSocket >= 0) |
| 1052 | { |
| 1053 | close(ClientSocket); |
| 1054 | } |
| 1055 | |
| 1056 | return Result; |
| 1057 | } |
| 1058 | |
| 1059 | int GetSetSid(PLXT_ARGS Args) |
| 1060 | |
| 1061 | /*++ |
| 1062 | |
| 1063 | Routine Description: |
| 1064 | |
| 1065 | This routine tests the getsid() and setsid() system calls.. |
| 1066 | |
| 1067 | Arguments: |
| 1068 | |
| 1069 | Args - Supplies the command line arguments. |
| 1070 | |
| 1071 | Return Value: |
| 1072 | |
| 1073 | Returns 0 on success, -1 on failure. |
| 1074 | |
| 1075 | --*/ |
| 1076 | |
| 1077 | { |
| 1078 | |
| 1079 | pid_t ChildPid; |
| 1080 | pid_t ParentSid; |
| 1081 | int Result; |
| 1082 | pid_t Sid; |
| 1083 | |
| 1084 | LxtCheckResult(LxtSignalBlock(SIGUSR1)); |
| 1085 | LxtCheckErrno(ChildPid = fork()); |
| 1086 | if (ChildPid == 0) |
| 1087 | { |
| 1088 | |
| 1089 | // |
| 1090 | // Initial values. |
| 1091 | // |
| 1092 | |
| 1093 | LxtCheckErrno(ParentSid = getsid(getppid())); |
| 1094 | LxtCheckNotEqual(ParentSid, 0, "%d") LxtCheckErrno(Sid = getsid(0)); |
| 1095 | LxtCheckEqual(ParentSid, Sid, "%d"); |
| 1096 | LxtCheckErrno(Sid = getsid(getpid())); |
| 1097 | LxtCheckEqual(ParentSid, Sid, "%d"); |
| 1098 | |
| 1099 | // |
| 1100 | // Create a new session. |
| 1101 | // |
| 1102 | |
| 1103 | LxtCheckErrno(Sid = setsid()); |
| 1104 | LxtCheckNotEqual(ParentSid, Sid, "%d"); |
| 1105 | LxtCheckEqual(Sid, getpid(), "%d"); |
| 1106 | LxtCheckEqual(Sid, getpgid(0), "%d"); |
| 1107 | |
| 1108 | // |
| 1109 | // Tell the parent that a new session was created. |
| 1110 | // |
| 1111 | |
| 1112 | LxtCheckErrnoZeroSuccess(kill(getppid(), SIGUSR1)); |
| 1113 | |
| 1114 | // |
| 1115 | // Wait for the signal to exit. |
| 1116 | // |
| 1117 | |
| 1118 | LxtCheckResult(LxtSignalWaitBlocked(SIGUSR1, getppid(), 2)); |
| 1119 | _exit(LXT_RESULT_SUCCESS); |
| 1120 | } |
| 1121 | |
| 1122 | // |
| 1123 | // Wait until the child has created the session. |
| 1124 | // |
| 1125 | |
| 1126 | LxtCheckResult(LxtSignalWaitBlocked(SIGUSR1, ChildPid, 2)); |
| 1127 | LxtCheckErrno(Sid = getsid(ChildPid)); |
| 1128 | LxtCheckErrno(ParentSid = getsid(0)); |
| 1129 | LxtCheckNotEqual(ParentSid, Sid, "%d"); |
| 1130 | LxtCheckEqual(Sid, ChildPid, "%d"); |
| 1131 | LxtCheckEqual(Sid, getpgid(ChildPid), "%d"); |
| 1132 | |
| 1133 | // |
| 1134 | // Tell the child to exit. |
| 1135 | // |
| 1136 | |
| 1137 | LxtCheckErrnoZeroSuccess(kill(ChildPid, SIGUSR1)); |
| 1138 | LxtWaitPidPoll(ChildPid, 0); |
| 1139 | |
| 1140 | // |
| 1141 | // If the process is a process group leader, it can't create a new |
| 1142 | // session. The test is already the process group leader if it is launched |
| 1143 | // from the shell but not from all test environments. |
| 1144 | // |
| 1145 | |
| 1146 | if (getpid() != getpgid(0)) |
| 1147 | { |
| 1148 | LxtCheckResult(setpgid(getpid(), 0)); |
| 1149 | } |
| 1150 | |
| 1151 | LxtCheckErrnoFailure(setsid(), EPERM); |
| 1152 | |
| 1153 | // |
| 1154 | // Getsid with invalid arguments. |
| 1155 | // |
| 1156 | |
| 1157 | LxtCheckErrnoFailure(getsid(-1), ESRCH); |
| 1158 | |
| 1159 | ErrorExit: |
| 1160 | return Result; |
| 1161 | } |