lustre/autoconf/lustre-core.m4

   1 #
   2 # LC_CONFIG_SRCDIR
   3 #
   4 # Wrapper for AC_CONFIG_SUBDIR
   5 #
   6 AC_DEFUN([LC_CONFIG_SRCDIR], [
   7 AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
   8 ldiskfs_is_ext4="yes"
   9 ])
  10
  11 #
  12 # LC_PATH_DEFAULTS
  13 #
  14 # lustre specific paths
  15 #
  16 AC_DEFUN([LC_PATH_DEFAULTS], [
  17 # ptlrpc kernel build requires this
  18 LUSTRE="$PWD/lustre"
  19 AC_SUBST(LUSTRE)
  20
  21 # mount.lustre
  22 rootsbindir='/sbin'
  23 AC_SUBST(rootsbindir)
  24
  25 demodir='$(docdir)/demo'
  26 AC_SUBST(demodir)
  27
  28 pkgexampledir='${pkgdatadir}/examples'
  29 AC_SUBST(pkgexampledir)
  30 ]) # LC_PATH_DEFAULTS
  31
  32 #
  33 # LC_TARGET_SUPPORTED
  34 #
  35 # is the target os supported?
  36 #
  37 AC_DEFUN([LC_TARGET_SUPPORTED], [
  38 case $target_os in
  39         linux*)
  40 $1
  41                 ;;
  42         *)
  43 $2
  44                 ;;
  45 esac
  46 ]) # LC_TARGET_SUPPORTED
  47
  48 #
  49 # LC_GLIBC_SUPPORT_FHANDLES
  50 #
  51 AC_DEFUN([LC_GLIBC_SUPPORT_FHANDLES], [
  52 AC_CHECK_FUNCS([name_to_handle_at],
  53         [AC_DEFINE(HAVE_FHANDLE_GLIBC_SUPPORT, 1,
  54                 [file handle and related syscalls are supported])],
  55         [AC_MSG_WARN([file handle and related syscalls are not supported])])
  56 ]) # LC_GLIBC_SUPPORT_FHANDLES
  57
  58 #
  59 # LC_GLIBC_SUPPORT_COPY_FILE_RANGE
  60 #
  61 AC_DEFUN([LC_GLIBC_SUPPORT_COPY_FILE_RANGE], [
  62 AC_CHECK_FUNCS([copy_file_range],
  63         [AC_DEFINE(HAVE_COPY_FILE_RANGE, 1,
  64                 [copy_file_range() is supported])],
  65         [AC_MSG_WARN([copy_file_range() is not supported])])
  66 ]) # LC_GLIBC_SUPPORT_COPY_FILE_RANGE
  67
  68 #
  69 # LC_FID2PATH_UNION
  70 #
  71 AC_DEFUN([LC_FID2PATH_ANON_UNION], [
  72 saved_flags="$CFLAGS"
  73 CFLAGS="-Werror"
  74 AC_MSG_CHECKING([if 'struct getinfo_fid2path' has anonymous union])
  75 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  76         #include <linux/lustre/lustre_idl.h>
  77
  78         int main(void) {
  79                 struct getinfo_fid2path gf;
  80                 struct lu_fid root_fid;
  81
  82                 *gf.gf_root_fid = root_fid;
  83                 return 0;
  84         }
  85 ])],[
  86         AC_DEFINE(HAVE_FID2PATH_ANON_UNIONS, 1, [union is unnamed])
  87         AC_MSG_RESULT([yes])
  88 ],[
  89         AC_MSG_RESULT([no])
  90 ])
  91 CFLAGS="$saved_flags"
  92 ]) # LC_FID2PATH_ANON_UNION
  93
  94 #
  95 # LC_STACK_SIZE
  96 #
  97 # Ensure the stack size is at least 8k in Lustre server (all kernels)
  98 #
  99 AC_DEFUN([LC_SRC_STACK_SIZE], [
 100         LB2_LINUX_TEST_SRC([stack_size_8k], [
 101                 #include <linux/thread_info.h>
 102         ], [
 103                 #if THREAD_SIZE < 8192
 104                 #error "stack size < 8192"
 105                 #endif
 106         ])
 107 ])
 108 AC_DEFUN([LC_STACK_SIZE], [
 109         AC_MSG_CHECKING([if stack size is at least 8k])
 110         LB2_LINUX_TEST_RESULT([stack_size_8k], [],[
 111                 AC_MSG_ERROR(
 112                 [Lustre requires that Linux is configured with at least a 8KB stack.])
 113         ])
 114 ]) # LC_STACK_SIZE
 115
 116 #
 117 # LC_MDS_MAX_THREADS
 118 #
 119 # Allow the user to set the MDS thread upper limit
 120 #
 121 AC_DEFUN([LC_MDS_MAX_THREADS], [
 122 AC_MSG_CHECKING([for maximum number of MDS threads])
 123 AC_ARG_WITH([mds_max_threads],
 124         AS_HELP_STRING([--with-mds-max-threads=count],
 125                 [maximum threads available on the MDS: (default=512)]),
 126         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
 127                 [maximum number of MDS threads])])
 128 AC_MSG_RESULT([$with_mds_max_threads])
 129 ]) # LC_MDS_MAX_THREADS
 130
 131 #
 132 # LC_CONFIG_PINGER
 133 #
 134 # the pinger is temporary, until we have the recovery node in place
 135 #
 136 AC_DEFUN([LC_CONFIG_PINGER], [
 137 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 138 AC_ARG_ENABLE([pinger],
 139         AS_HELP_STRING([--disable-pinger],
 140                 [disable recovery pinger support]),
 141         [], [enable_pinger="yes"])
 142 AC_MSG_RESULT([$enable_pinger])
 143 AS_IF([test "x$enable_pinger" != xno], [
 144         AC_DEFINE(CONFIG_LUSTRE_FS_PINGER, 1, [Use the Pinger])
 145         AC_SUBST(ENABLE_PINGER, yes)
 146 ], [
 147         AC_SUBST(ENABLE_PINGER, no)
 148 ])
 149 ]) # LC_CONFIG_PINGER
 150
 151 #
 152 # LC_CONFIG_CHECKSUM
 153 #
 154 # do checksum of bulk data between client and OST
 155 #
 156 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 157 AC_MSG_CHECKING([whether to enable data checksum support])
 158 AC_ARG_ENABLE([checksum],
 159         AS_HELP_STRING([--disable-checksum],
 160                 [disable data checksum support]),
 161         [], [enable_checksum="yes"])
 162 AC_MSG_RESULT([$enable_checksum])
 163 AS_IF([test "x$enable_checksum" != xno], [
 164         AC_DEFINE(CONFIG_ENABLE_CHECKSUM, 1, [do data checksums])
 165         AC_SUBST(ENABLE_CHECKSUM, yes)
 166 ], [
 167         AC_SUBST(ENABLE_CHECKSUM, no)
 168 ])
 169 ]) # LC_CONFIG_CHECKSUM
 170
 171 #
 172 # LC_CONFIG_FLOCK
 173 #
 174 # enable distributed flock by default
 175 #
 176 AC_DEFUN([LC_CONFIG_FLOCK], [
 177 AC_MSG_CHECKING([whether to enable flock by default])
 178 AC_ARG_ENABLE([flock],
 179         AS_HELP_STRING([--disable-flock],
 180                 [disable flock by default]),
 181         [], [enable_flock="yes"])
 182 AC_MSG_RESULT([$enable_flock])
 183 AS_IF([test "x$enable_flock" != xno], [
 184         AC_DEFINE(CONFIG_ENABLE_FLOCK, 1, [enable flock by default])
 185         AC_SUBST(ENABLE_FLOCK, yes)
 186 ], [
 187         AC_SUBST(ENABLE_FLOCK, no)
 188 ])
 189 ]) # LC_CONFIG_FLOCK
 190
 191 #
 192 # LC_CONFIG_HEALTH_CHECK_WRITE
 193 #
 194 # Turn off the actual write to the disk
 195 #
 196 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 197 AC_MSG_CHECKING([whether to enable a write with the health check])
 198 AC_ARG_ENABLE([health_write],
 199         AS_HELP_STRING([--enable-health_write],
 200                 [enable disk writes when doing health check]),
 201         [], [enable_health_write="no"])
 202 AC_MSG_RESULT([$enable_health_write])
 203 AS_IF([test "x$enable_health_write" != xno], [
 204         AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])
 205         AC_SUBST(ENABLE_HEALTH_WRITE, yes)
 206 ], [
 207         AC_SUBST(ENABLE_HEALTH_WRITE, no)
 208 ])
 209 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 210
 211 #
 212 # LC_CONFIG_LRU_RESIZE
 213 #
 214 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 215 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 216 AC_ARG_ENABLE([lru_resize],
 217         AS_HELP_STRING([--enable-lru-resize],
 218                 [enable lru resize support]),
 219         [], [enable_lru_resize="yes"])
 220 AC_MSG_RESULT([$enable_lru_resize])
 221 AS_IF([test "x$enable_lru_resize" != xno], [
 222         AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 223         AC_SUBST(ENABLE_LRU_RESIZE, yes)
 224 ], [
 225         AC_SUBST(ENABLE_LRU_RESIZE, no)
 226 ])
 227 ]) # LC_CONFIG_LRU_RESIZE
 228
 229 #
 230 # LC_CONFIG_QUOTA
 231 #
 232 # Quota support. The kernel must support CONFIG_QUOTA.
 233 #
 234 AC_DEFUN([LC_SRC_CONFIG_QUOTA], [
 235         LB2_SRC_CHECK_CONFIG_IM([QUOTA])
 236 ])
 237 AC_DEFUN([LC_CONFIG_QUOTA], [
 238         LB2_TEST_CHECK_CONFIG_IM([QUOTA],[],[AC_MSG_ERROR(
 239 [Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.])])
 240 ]) # LC_CONFIG_QUOTA
 241
 242 #
 243 # LC_CONFIG_FHANDLE
 244 #
 245 # fhandle kernel support for open_by_handle_at() and name_to_handle_at()
 246 # system calls. The kernel must support CONFIG_FHANDLE.
 247 #
 248 AC_DEFUN([LC_SRC_CONFIG_FHANDLE], [
 249         LB2_SRC_CHECK_CONFIG_IM([FHANDLE])
 250 ])
 251 AC_DEFUN([LC_CONFIG_FHANDLE], [
 252         LB2_TEST_CHECK_CONFIG_IM([FHANDLE],[],[AC_MSG_ERROR(
 253 [Lustre fid handling requires that CONFIG_FHANDLE is enabled in your kernel.])])
 254 ]) # LC_CONFIG_FHANDLE
 255
 256 #
 257 # LC_POSIX_ACL_CONFIG
 258 #
 259 # POSIX ACL support.
 260 #
 261 AC_DEFUN([LC_SRC_POSIX_ACL_CONFIG], [
 262         LB2_SRC_CHECK_CONFIG_IM([FS_POSIX_ACL])
 263 ])
 264 AC_DEFUN([LC_POSIX_ACL_CONFIG], [
 265         LB2_TEST_CHECK_CONFIG_IM([FS_POSIX_ACL],
 266                 [AC_DEFINE(CONFIG_LUSTRE_FS_POSIX_ACL, 1, [Enable POSIX acl])],
 267                 [])
 268 ]) # LC_POSIX_ACL_CONFIG
 269
 270 # CRYPTO_MD5 check and warn only if GSS is not disabled.
 271
 272 #
 273 # LC_CONFIG_GSS_KEYRING
 274 #
 275 # default 'auto', tests for dependencies, if found, enables;
 276 # only called if gss is enabled
 277 #
 278 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 279 AC_MSG_CHECKING([whether to enable gss keyring backend])
 280 AC_ARG_ENABLE([gss_keyring],
 281         [AS_HELP_STRING([--disable-gss-keyring],
 282                 [disable gss keyring backend])],
 283         [], [AS_IF([test "x$enable_gss" != xno], [
 284                         enable_gss_keyring="yes"], [
 285                         enable_gss_keyring="auto"])])
 286 AC_MSG_RESULT([$enable_gss_keyring])
 287 AS_IF([test "x$enable_gss_keyring" != xno], [
 288         LB_CHECK_CONFIG_IM([KEYS], [], [
 289                 gss_keyring_conf_test="fail"
 290                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 291
 292         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 293                 gss_keyring_conf_test="fail"
 294                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 295
 296         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 297                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 298                         [Define this if you enable gss keyring backend])
 299                 enable_gss_keyring="yes"
 300         ], [
 301                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 302                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 303                 ])
 304                 enable_ssk="no"
 305         ])
 306 ], [
 307         enable_ssk="no"
 308 ])
 309 ]) # LC_CONFIG_GSS_KEYRING
 310
 311 #
 312 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 313 #
 314 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 315 #
 316 AC_DEFUN([LC_SRC_KEY_TYPE_INSTANTIATE_2ARGS], [
 317         LB2_LINUX_TEST_SRC([key_type_instantiate_2args], [
 318                 #include <linux/key-type.h>
 319         ],[
 320                 ((struct key_type *)0)->instantiate(0, NULL);
 321         ])
 322 ])
 323 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 324         AC_MSG_CHECKING([if 'key_type->instantiate' has two args])
 325         LB2_LINUX_TEST_RESULT([key_type_instantiate_2args], [
 326                 AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 327                         [key_type->instantiate has two args])
 328         ])
 329 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 330
 331 #
 332 # LC_CONFIG_SUNRPC
 333 #
 334 AC_DEFUN([LC_CONFIG_SUNRPC], [
 335 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 336         AS_IF([test "x$sunrpc_required" = xyes], [
 337                 AC_MSG_ERROR([
 338
 339 kernel SUNRPC support is required by using GSS.
 340 ])
 341         ])])
 342 ]) # LC_CONFIG_SUNRPC
 343
 344 #
 345 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 346 #
 347 # Build gss and related tools of Lustre. Currently both kernel and user space
 348 # parts are depend on linux platform.
 349 #
 350 AC_DEFUN([LC_CONFIG_GSS], [
 351 AC_MSG_CHECKING([whether to enable gss support])
 352 AC_ARG_ENABLE([gss],
 353         [AS_HELP_STRING([--enable-gss], [enable gss support])],
 354         [], [enable_gss="auto"])
 355 AC_MSG_RESULT([$enable_gss])
 356
 357 AC_ARG_VAR([TEST_JOBS],
 358     [simultaneous jobs during configure (defaults to $(nproc))])
 359 if test "x$ac_cv_env_TEST_JOBS_set" != "xset"; then
 360         TEST_JOBS=${TEST_JOBS:-$(nproc)}
 361 fi
 362 AC_SUBST(TEST_JOBS)
 363
 364 AC_ARG_VAR([TEST_DIR],
 365     [location of temporary parallel configure tests (defaults to $PWD/lb2)])
 366         TEST_DIR=${TEST_DIR:-${ac_pwd}/_lpb}
 367 AC_SUBST(TEST_DIR)
 368
 369 AS_IF([test "x$enable_gss" != xno], [
 370         LC_CONFIG_GSS_KEYRING
 371
 372         sunrpc_required=$enable_gss
 373         LC_CONFIG_SUNRPC
 374         sunrpc_required="no"
 375
 376         require_krb5=$enable_gss
 377         AC_KERBEROS_V5
 378         require_krb5="no"
 379
 380         AS_IF([test -n "$KRBDIR"], [
 381                 gss_conf_test="success"
 382         ], [
 383                 gss_conf_test="failure"
 384         ])
 385
 386         AS_IF([test "x$gss_conf_test" = xsuccess && test "x$enable_gss" != xno], [
 387                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 388                 enable_gss="yes"
 389         ], [
 390                 enable_gss_keyring="no"
 391                 enable_gss="no"
 392         ])
 393
 394         AS_IF([test "x$enable_ssk" != xno], [
 395                 enable_ssk=$enable_gss
 396         ])
 397 ], [
 398         enable_gss_keyring="no"
 399 ])
 400 ]) # LC_CONFIG_GSS
 401
 402 # LC_OPENSSL_HMAC
 403 #
 404 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 405 AC_DEFUN([LC_OPENSSL_HMAC], [
 406 has_hmac_functions="no"
 407 saved_flags="$CFLAGS"
 408 CFLAGS="-Werror"
 409 AC_MSG_CHECKING([whether OpenSSL has HMAC_Init_ex])
 410 AS_IF([test "x$enable_ssk" != xno], [
 411 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 412         #include <openssl/hmac.h>
 413         #include <openssl/evp.h>
 414
 415         int main(void) {
 416                 int rc;
 417                 rc = HMAC_Init_ex(NULL, "test", 4, EVP_md_null(), NULL);
 418                 return rc;
 419         }
 420 ])],[
 421         has_hmac_functions="yes"
 422 ])
 423 ])
 424 AC_MSG_RESULT([$has_hmac_functions])
 425 CFLAGS="$saved_flags"
 426 ]) # LC_OPENSSL_HMAC
 427
 428 # LC_OPENSSL_EVP_PKEY
 429 #
 430 # OpenSSL 3.0 introduces EVP_PKEY_get_params
 431 AC_DEFUN([LC_OPENSSL_EVP_PKEY], [
 432 has_evp_pkey="no"
 433 saved_flags="$CFLAGS"
 434 CFLAGS="-Werror"
 435 AC_MSG_CHECKING([whether OpenSSL has EVP_PKEY_get_params])
 436 AS_IF([test "x$enable_ssk" != xno], [
 437 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 438         #include <openssl/evp.h>
 439
 440         int main(void) {
 441                 OSSL_PARAM *params;
 442
 443                 int rc = EVP_PKEY_get_params(NULL, params);
 444                 return rc;
 445         }
 446 ])],[
 447         AC_DEFINE(HAVE_OPENSSL_EVP_PKEY, 1, [OpenSSL EVP_PKEY_get_params])
 448         has_evp_pkey="yes"
 449 ])
 450 ])
 451 CFLAGS="$saved_flags"
 452 AC_MSG_RESULT([$has_evp_pkey])
 453 ]) # LC_OPENSSL_EVP_PKEY
 454
 455 #
 456 # LC_OPENSSL_SSK
 457 #
 458 # Check whether to enable Lustre client crypto
 459 #
 460 AC_DEFUN([LC_OPENSSL_SSK], [
 461 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 462 AS_IF([test "x$enable_ssk" != xno], [
 463         AC_MSG_RESULT(
 464         )
 465         LC_OPENSSL_HMAC
 466         LC_OPENSSL_EVP_PKEY
 467 ])
 468 AS_IF([test "x$has_hmac_functions" = xyes -o "x$has_evp_pkey" = xyes], [
 469         AC_DEFINE(HAVE_OPENSSL_SSK, 1, [OpenSSL HMAC functions needed for SSK])
 470 ], [
 471         enable_ssk="no"
 472 ])
 473 AC_MSG_RESULT([$enable_ssk])
 474 ]) # LC_OPENSSL_SSK
 475
 476 # LC_OPENSSL_GETSEPOL
 477 #
 478 # OpenSSL is needed for l_getsepol
 479 AC_DEFUN([LC_OPENSSL_GETSEPOL], [
 480 saved_flags="$CFLAGS"
 481 CFLAGS="-Werror"
 482 AC_MSG_CHECKING([whether openssl-devel is present])
 483 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 484         #include <openssl/evp.h>
 485
 486         int main(void) {
 487                 EVP_MD_CTX *mdctx = EVP_MD_CTX_create();
 488                 (void) mdctx;
 489         }
 490 ])],[
 491         AC_DEFINE(HAVE_OPENSSL_GETSEPOL, 1, [openssl-devel is present])
 492         enable_getsepol="yes"
 493
 494 ],[
 495         enable_getsepol="no"
 496         AC_MSG_WARN([
 497
 498 No openssl-devel headers found, unable to build l_getsepol and SELinux status checking
 499 ])
 500 ])
 501 AC_MSG_RESULT([$enable_getsepol])
 502 CFLAGS="$saved_flags"
 503 ]) # LC_OPENSSL_GETSEPOL
 504
 505 # LC_HAVE_LIBAIO
 506 AC_DEFUN([LC_HAVE_LIBAIO], [
 507         AC_CHECK_HEADER([libaio.h],
 508                 enable_libaio="yes",
 509                 AC_MSG_WARN([libaio is not installed on the system]))
 510 ]) # LC_HAVE_LIBAIO
 511
 512 #
 513 # LC_INVALIDATE_RANGE
 514 #
 515 # 3.11 invalidatepage requires the length of the range to invalidate
 516 #
 517 AC_DEFUN([LC_SRC_INVALIDATE_RANGE], [
 518         LB2_LINUX_TEST_SRC([address_space_ops_invalidatepage_3args], [
 519                 #include <linux/fs.h>
 520         ],[
 521                 struct address_space_operations a_ops;
 522                 a_ops.invalidatepage(NULL, 0, 0);
 523         ])
 524 ])
 525 AC_DEFUN([LC_INVALIDATE_RANGE], [
 526         AC_MSG_CHECKING(
 527                 [if 'address_space_operations.invalidatepage' requires 3 arguments])
 528         LB2_LINUX_TEST_RESULT([address_space_ops_invalidatepage_3args], [
 529                 AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
 530                         [address_space_operations.invalidatepage needs 3 arguments])
 531         ])
 532 ]) # LC_INVALIDATE_RANGE
 533
 534 #
 535 # LC_HAVE_DIR_CONTEXT
 536 #
 537 # 3.11 readdir now takes the new struct dir_context
 538 #
 539 AC_DEFUN([LC_SRC_HAVE_DIR_CONTEXT], [
 540         LB2_LINUX_TEST_SRC([dir_context], [
 541                 #include <linux/fs.h>
 542         ],[
 543         #ifdef FMODE_KABI_ITERATE
 544         #error "back to use readdir in kabi_extand mode"
 545         #else
 546                 struct dir_context ctx;
 547
 548                 ctx.pos = 0;
 549         #endif
 550         ])
 551 ])
 552 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
 553         AC_MSG_CHECKING([if 'dir_context' exist])
 554         LB2_LINUX_TEST_RESULT([dir_context], [
 555                 AC_DEFINE(HAVE_DIR_CONTEXT, 1, [dir_context exist])
 556         ])
 557 ]) # LC_HAVE_DIR_CONTEXT
 558
 559 #
 560 # LC_D_COMPARE_5ARGS
 561 #
 562 # 3.11 dentry_operations.d_compare() taken 5 arguments.
 563 #
 564 AC_DEFUN([LC_SRC_D_COMPARE_5ARGS], [
 565         LB2_LINUX_TEST_SRC([d_compare_5args], [
 566                 #include <linux/dcache.h>
 567         ],[
 568                 ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
 569         ])
 570 ])
 571 AC_DEFUN([LC_D_COMPARE_5ARGS], [
 572         AC_MSG_CHECKING([if 'd_compare' taken 5 arguments])
 573         LB2_LINUX_TEST_RESULT([d_compare_5args], [
 574                 AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
 575                         [d_compare need 5 arguments])
 576         ])
 577 ]) # LC_D_COMPARE_5ARGS
 578
 579 #
 580 # LC_HAVE_DCOUNT
 581 #
 582 # 3.11 need to access d_count to get dentry reference count
 583 #
 584 AC_DEFUN([LC_SRC_HAVE_DCOUNT], [
 585         LB2_LINUX_TEST_SRC([d_count], [
 586                 #include <linux/dcache.h>
 587         ],[
 588                 struct dentry de = { };
 589                 int count;
 590
 591                 count = d_count(&de);
 592         ])
 593 ])
 594 AC_DEFUN([LC_HAVE_DCOUNT], [
 595         AC_MSG_CHECKING([if 'd_count' exists])
 596         LB2_LINUX_TEST_RESULT([d_count], [
 597                 AC_DEFINE(HAVE_D_COUNT, 1, [d_count exist])
 598         ])
 599 ]) # LC_HAVE_DCOUNT
 600
 601 #
 602 # LC_PID_NS_FOR_CHILDREN
 603 #
 604 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
 605 #
 606 AC_DEFUN([LC_SRC_PID_NS_FOR_CHILDREN], [
 607         LB2_LINUX_TEST_SRC([pid_ns_for_children], [
 608                 #include <linux/nsproxy.h>
 609         ],[
 610                 struct nsproxy ns;
 611                 ns.pid_ns_for_children = NULL;
 612         ])
 613 ])
 614 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
 615         AC_MSG_CHECKING([if 'struct nsproxy' has 'pid_ns_for_children'])
 616         LB2_LINUX_TEST_RESULT([pid_ns_for_children], [
 617                 AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
 618                           ['struct nsproxy' has 'pid_ns_for_children'])
 619         ])
 620 ]) # LC_PID_NS_FOR_CHILDREN
 621
 622 #
 623 # LC_OLDSIZE_TRUNCATE_PAGECACHE
 624 #
 625 # 3.12 truncate_pagecache without oldsize parameter
 626 #
 627 AC_DEFUN([LC_SRC_OLDSIZE_TRUNCATE_PAGECACHE], [
 628         LB2_LINUX_TEST_SRC([truncate_pagecache_old_size], [
 629                 #include <linux/mm.h>
 630         ],[
 631                 truncate_pagecache(NULL, 0, 0);
 632         ])
 633 ])
 634 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
 635         AC_MSG_CHECKING([if 'truncate_pagecache' with 'old_size' parameter])
 636         LB2_LINUX_TEST_RESULT([truncate_pagecache_old_size], [
 637                 AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
 638                         [with oldsize])
 639         ])
 640 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
 641
 642 #
 643 # LC_PTR_ERR_OR_ZERO
 644 #
 645 # For some reason SLES11SP4 is missing the PTR_ERR_OR_ZERO macro
 646 # It was added to linux kernel 3.12
 647 #
 648 AC_DEFUN([LC_SRC_PTR_ERR_OR_ZERO_MISSING], [
 649         LB2_LINUX_TEST_SRC([is_err_or_null], [
 650                 #include <linux/err.h>
 651         ],[
 652                 if (PTR_ERR_OR_ZERO(NULL)) return 0;
 653         ])
 654 ])
 655 AC_DEFUN([LC_PTR_ERR_OR_ZERO_MISSING], [
 656         AC_MSG_CHECKING([if 'PTR_ERR_OR_ZERO' is missing])
 657         LB2_LINUX_TEST_RESULT([is_err_or_null], [
 658                 AC_DEFINE(HAVE_PTR_ERR_OR_ZERO, 1,
 659                         ['PTR_ERR_OR_ZERO' exist])
 660         ])
 661 ]) # LC_PTR_ERR_OR_ZERO_MISSING
 662
 663 #
 664 # LC_HAVE_DENTRY_D_U_D_ALIAS
 665 #
 666 # 3.11 kernel moved d_alias to the union d_u in struct dentry
 667 #
 668 # Some distros move d_alias to d_u but it is still a struct list
 669 #
 670 AC_DEFUN([LC_SRC_HAVE_DENTRY_D_U_D_ALIAS_LIST], [
 671         LB2_LINUX_TEST_SRC([d_alias_list], [
 672                 #include <linux/list.h>
 673                 #include <linux/dcache.h>
 674         ],[
 675                 struct dentry de;
 676                 INIT_LIST_HEAD(&de.d_u.d_alias);
 677         ])
 678 ])
 679 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS_LIST], [
 680         AC_MSG_CHECKING([if list 'dentry.d_u.d_alias' exist])
 681         LB2_LINUX_TEST_RESULT([d_alias_list], [
 682                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
 683                         [list dentry.d_u.d_alias exist])
 684         ])
 685 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS_LIST
 686
 687 #
 688 # LC_HAVE_DENTRY_D_U_D_ALIAS_HLIST
 689 #
 690 # Some distros move d_alias to d_u and it is an hlist
 691 #
 692 AC_DEFUN([LC_SRC_HAVE_DENTRY_D_U_D_ALIAS_HLIST], [
 693         LB2_LINUX_TEST_SRC([d_alias_hlist], [
 694                 #include <linux/list.h>
 695                 #include <linux/dcache.h>
 696         ],[
 697                 struct dentry de;
 698                 INIT_HLIST_NODE(&de.d_u.d_alias);
 699         ])
 700 ])
 701 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS_HLIST], [
 702         AC_MSG_CHECKING([if hlist 'dentry.d_u.d_alias' exist])
 703         LB2_LINUX_TEST_RESULT([d_alias_hlist], [
 704                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
 705                         [list dentry.d_u.d_alias exist])
 706         ])
 707 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS_HLIST
 708
 709
 710 #
 711 # LC_HAVE_DENTRY_D_CHILD
 712 #
 713 # 3.11 kernel d_child has been moved out of the union d_u
 714 # in struct dentry
 715 #
 716 AC_DEFUN([LC_SRC_HAVE_DENTRY_D_CHILD], [
 717         LB2_LINUX_TEST_SRC([d_child], [
 718                 #include <linux/list.h>
 719                 #include <linux/dcache.h>
 720         ],[
 721                 struct dentry de;
 722                 INIT_LIST_HEAD(&de.d_child);
 723         ])
 724 ])
 725 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
 726         AC_MSG_CHECKING([if 'dentry.d_child' exist])
 727         LB2_LINUX_TEST_RESULT([d_child], [
 728                 AC_DEFINE(HAVE_DENTRY_D_CHILD, 1, [dentry.d_child exist])
 729         ])
 730 ]) # LC_HAVE_DENTRY_D_CHILD
 731
 732 #
 733 # LC_KIOCB_KI_LEFT
 734 #
 735 # 3.12 ki_left removed from struct kiocb
 736 #
 737 AC_DEFUN([LC_SRC_KIOCB_KI_LEFT], [
 738         LB2_LINUX_TEST_SRC([kiocb_ki_left], [
 739                 #include <linux/aio.h>
 740         ],[
 741                 ((struct kiocb*)0)->ki_left = 0;
 742         ])
 743 ])
 744 AC_DEFUN([LC_KIOCB_KI_LEFT], [
 745         AC_MSG_CHECKING([if 'struct kiocb' with 'ki_left' member])
 746         LB2_LINUX_TEST_RESULT([kiocb_ki_left], [
 747                 AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
 748                         [ki_left exist])
 749         ])
 750 ]) # LC_KIOCB_KI_LEFT
 751
 752 #
 753 # LC_REGISTER_SHRINKER_RET
 754 #
 755 # v3.11-8748-g1d3d4437eae1 register_shrinker returns a status
 756 #
 757 AC_DEFUN([LC_SRC_REGISTER_SHRINKER_RET], [
 758         LB2_LINUX_TEST_SRC([register_shrinker_ret], [
 759                 #include <linux/mm.h>
 760         ],[
 761                 if (register_shrinker(NULL))
 762                         unregister_shrinker(NULL);
 763         ],[])
 764 ])
 765 AC_DEFUN([LC_REGISTER_SHRINKER_RET], [
 766         AC_MSG_CHECKING([if register_shrinker() returns status])
 767         LB2_LINUX_TEST_RESULT([register_shrinker_ret], [
 768                 AC_DEFINE(HAVE_REGISTER_SHRINKER_RET, 1,
 769                         [register_shrinker() returns status])
 770         ])
 771 ]) # LC_REGISTER_SHRINKER_RET
 772
 773 #
 774 # LC_VFS_RENAME_5ARGS
 775 #
 776 # 3.13 has vfs_rename with 5 args
 777 #
 778 AC_DEFUN([LC_SRC_VFS_RENAME_5ARGS], [
 779         LB2_LINUX_TEST_SRC([vfs_rename_5args], [
 780                 #include <linux/fs.h>
 781         ],[
 782                 vfs_rename(NULL, NULL, NULL, NULL, NULL);
 783         ], [
 784                 AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
 785                         [kernel has vfs_rename with 5 args])
 786         ])
 787 ])
 788 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
 789         AC_MSG_CHECKING([if Linux kernel has 'vfs_rename' with 5 args])
 790         LB2_LINUX_TEST_RESULT([vfs_rename_5args], [
 791                 AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
 792                         [kernel has vfs_rename with 5 args])
 793         ])
 794 ]) # LC_VFS_RENAME_5ARGS
 795
 796 #
 797 # LC_VFS_UNLINK_3ARGS
 798 #
 799 # 3.13 has vfs_unlink with 3 args
 800 #
 801 AC_DEFUN([LC_SRC_VFS_UNLINK_3ARGS], [
 802         LB2_LINUX_TEST_SRC([vfs_unlink_3args], [
 803                 #include <linux/fs.h>
 804         ],[
 805                 vfs_unlink(NULL, NULL, NULL);
 806         ])
 807 ])
 808 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
 809         AC_MSG_CHECKING([if Linux kernel has 'vfs_unlink' with 3 args])
 810         LB2_LINUX_TEST_RESULT([vfs_unlink_3args], [
 811                 AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
 812                         [kernel has vfs_unlink with 3 args])
 813         ])
 814 ]) # LC_VFS_UNLINK_3ARGS
 815
 816 # LC_HAVE_D_IS_POSITIVE
 817 #
 818 # Kernel version 3.13 b18825a7c8e37a7cf6abb97a12a6ad71af160de7
 819 # d_is_positive is added
 820 #
 821 AC_DEFUN([LC_SRC_HAVE_D_IS_POSITIVE], [
 822         LB2_LINUX_TEST_SRC([d_is_positive], [
 823                 #include <linux/dcache.h>
 824         ],[
 825                 d_is_positive(NULL);
 826         ])
 827 ])
 828 AC_DEFUN([LC_HAVE_D_IS_POSITIVE], [
 829         AC_MSG_CHECKING([if 'd_is_positive' exist])
 830         LB2_LINUX_TEST_RESULT([d_is_positive], [
 831                 AC_DEFINE(HAVE_D_IS_POSITIVE, 1,
 832                         ['d_is_positive' is available])
 833         ])
 834 ]) # LC_HAVE_D_IS_POSITIVE
 835
 836 #
 837 # LC_HAVE_BVEC_ITER
 838 #
 839 # 3.14 move some of its data in struct bio into the new
 840 # struct bvec_iter
 841 #
 842 AC_DEFUN([LC_SRC_HAVE_BVEC_ITER], [
 843         LB2_LINUX_TEST_SRC([have_bvec_iter], [
 844                 #include <linux/bio.h>
 845         ],[
 846                 struct bvec_iter iter;
 847
 848                 iter.bi_bvec_done = 0;
 849         ])
 850 ])
 851 AC_DEFUN([LC_HAVE_BVEC_ITER], [
 852         AC_MSG_CHECKING([if Linux kernel has struct bvec_iter])
 853         LB2_LINUX_TEST_RESULT([have_bvec_iter], [
 854                 AC_DEFINE(HAVE_BVEC_ITER, 1,
 855                         [kernel has struct bvec_iter])
 856         ])
 857 ]) # LC_HAVE_BVEC_ITER
 858
 859 #
 860 # LC_IOP_SET_ACL
 861 #
 862 # 3.14 adds set_acl method to inode_operations
 863 # see kernel commit 893d46e443346370cd4ea81d9d35f72952c62a37
 864 #
 865 AC_DEFUN([LC_SRC_IOP_SET_ACL], [
 866         LB2_LINUX_TEST_SRC([inode_ops_set_acl], [
 867                 #include <linux/fs.h>
 868         ],[
 869                 struct inode_operations iop;
 870                 iop.set_acl = NULL;
 871         ])
 872 ])
 873 AC_DEFUN([LC_IOP_SET_ACL], [
 874         AC_MSG_CHECKING([if 'inode_operations' has '.set_acl' member function])
 875         LB2_LINUX_TEST_RESULT([inode_ops_set_acl], [
 876                 AC_DEFINE(HAVE_IOP_SET_ACL, 1,
 877                         [inode_operations has .set_acl member function])
 878         ])
 879 ]) # LC_IOP_SET_ACL
 880
 881 #
 882 # LC_HAVE_TRUNCATE_IPAGE_FINAL
 883 #
 884 # 3.14 bring truncate_inode_pages_final for evict_inode
 885 #
 886 AC_DEFUN([LC_SRC_HAVE_TRUNCATE_IPAGES_FINAL], [
 887         LB2_LINUX_TEST_SRC([truncate_ipages_final], [
 888                 #include <linux/mm.h>
 889         ],[
 890                 truncate_inode_pages_final(NULL);
 891         ])
 892 ])
 893 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
 894         AC_MSG_CHECKING([if Linux kernel has truncate_inode_pages_final])
 895         LB2_LINUX_TEST_RESULT([truncate_ipages_final], [
 896                 AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
 897                         [kernel has truncate_inode_pages_final])
 898         ])
 899 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
 900
 901 #
 902 # LC_IOPS_RENAME_WITH_FLAGS
 903 #
 904 # 3.14 has inode_operations->rename with 5 args
 905 # commit 520c8b16505236fc82daa352e6c5e73cd9870cff
 906 #
 907 AC_DEFUN([LC_SRC_IOPS_RENAME_WITH_FLAGS], [
 908         LB2_LINUX_TEST_SRC([iops_rename_with_flags], [
 909                 #include <linux/fs.h>
 910         ],[
 911                 struct inode *i1 = NULL, *i2 = NULL;
 912                 struct dentry *d1 = NULL, *d2 = NULL;
 913                 int rc;
 914                 rc = ((struct inode_operations *)0)->rename(i1, d1, i2, d2, 0);
 915         ])
 916 ]) # LC_IOPS_RENAME_WITH_FLAGS
 917 AC_DEFUN([LC_IOPS_RENAME_WITH_FLAGS], [
 918         AC_MSG_CHECKING([if 'inode_operations->rename' taken flags as argument])
 919         LB2_LINUX_TEST_RESULT([iops_rename_with_flags], [
 920                 AC_DEFINE(HAVE_IOPS_RENAME_WITH_FLAGS, 1,
 921                         [inode_operations->rename need flags as argument])
 922         ])
 923 ]) # LC_IOPS_RENAME_WITH_FLAGS
 924
 925 #
 926 # LC_VFS_RENAME_6ARGS
 927 #
 928 # 3.15 has vfs_rename with 6 args
 929 #
 930 AC_DEFUN([LC_SRC_VFS_RENAME_6ARGS], [
 931         LB2_LINUX_TEST_SRC([vfs_rename_6args], [
 932                 #include <linux/fs.h>
 933         ],[
 934                 vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
 935         ])
 936 ])
 937 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
 938         AC_MSG_CHECKING([if Linux kernel has 'vfs_rename' with 6 args])
 939         LB2_LINUX_TEST_RESULT([vfs_rename_6args], [
 940                 AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
 941                         [kernel has vfs_rename with 6 args])
 942         ])
 943 ]) # LC_VFS_RENAME_6ARGS
 944
 945 #
 946 # LC_DIRECTIO_USE_ITER
 947 #
 948 # 3.16 kernel changes direct IO to use iov_iter
 949 #
 950 AC_DEFUN([LC_SRC_DIRECTIO_USE_ITER], [
 951         LB2_LINUX_TEST_SRC([direct_io_iter], [
 952                 #include <linux/fs.h>
 953         ],[
 954                 struct address_space_operations ops = { };
 955                 struct iov_iter *iter = NULL;
 956                 loff_t offset = 0;
 957
 958                 ops.direct_IO(0, NULL, iter, offset);
 959         ])
 960 ])
 961 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
 962         AC_MSG_CHECKING([if direct IO uses iov_iter])
 963         LB2_LINUX_TEST_RESULT([direct_io_iter], [
 964                 AC_DEFINE(HAVE_DIRECTIO_ITER, 1, [direct IO uses iov_iter])
 965         ])
 966 ]) # LC_DIRECTIO_USE_ITER
 967
 968 #
 969 # LC_HAVE_IOV_ITER_INIT_DIRECTION
 970 #
 971 #
 972 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
 973 #      changed iov_iter_init api to start accepting a tag
 974 #      that defines if its a read or write operation
 975 #
 976 AC_DEFUN([LC_SRC_HAVE_IOV_ITER_INIT_DIRECTION], [
 977         LB2_LINUX_TEST_SRC([iter_init], [
 978                 #include <linux/uio.h>
 979                 #include <linux/fs.h>
 980         ],[
 981                 const struct iovec *iov = NULL;
 982
 983                 iov_iter_init(NULL, READ, iov, 1, 0);
 984         ],[-Werror])
 985 ])
 986 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
 987         AC_MSG_CHECKING([if 'iov_iter_init' takes a tag])
 988         LB2_LINUX_TEST_RESULT([iter_init], [
 989                 AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
 990                         [iov_iter_init handles directional tag])
 991         ])
 992 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
 993
 994 #
 995 # LC_HAVE_IOV_ITER_TRUNCATE
 996 #
 997 #
 998 # 3.16 introduces a new API iov_iter_truncate()
 999 #
1000 AC_DEFUN([LC_SRC_HAVE_IOV_ITER_TRUNCATE], [
1001         LB2_LINUX_TEST_SRC([iter_truncate], [
1002                 #include <linux/uio.h>
1003                 #include <linux/fs.h>
1004         ],[
1005                 struct iov_iter *i = NULL;
1006
1007                 iov_iter_truncate(i, 0);
1008         ],[-Werror])
1009 ])
1010 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
1011         AC_MSG_CHECKING([if 'iov_iter_truncate' exists])
1012         LB2_LINUX_TEST_RESULT([iter_truncate], [
1013                 AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
1014         ])
1015 ]) # LC_HAVE_IOV_ITER_TRUNCATE
1016
1017 #
1018 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1019 #
1020 # 3.16 introduces [read|write]_iter to struct file_operations
1021 #
1022 AC_DEFUN([LC_SRC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1023         LB2_LINUX_TEST_SRC([file_function_iter], [
1024                 #include <linux/fs.h>
1025         ],[
1026                 ((struct file_operations *)NULL)->read_iter(NULL, NULL);
1027                 ((struct file_operations *)NULL)->write_iter(NULL, NULL);
1028         ])
1029 ])
1030 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1031         AC_MSG_CHECKING([if 'file_operations.[read|write]_iter' exist])
1032         LB2_LINUX_TEST_RESULT([file_function_iter], [
1033                 AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
1034                         [file_operations.[read|write]_iter functions exist])
1035         ])
1036 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1037
1038 #
1039 # LC_PAGECACHE_GET_PAGE
1040 #
1041 # Kernel version 3.16 commit 2457aec63745e235bcafb7ef312b182d8682f0fc
1042 # @pagecache_get_page was introduced since Linux 3.16
1043 #
1044 AC_DEFUN([LC_SRC_PAGECACHE_GET_PAGE], [
1045         LB2_LINUX_TEST_SRC([pagecache_get_page], [
1046                 #include <linux/pagemap.h>
1047         ],[
1048                 pagecache_get_page(NULL, 0, 0, 0);
1049         ])
1050 ])
1051 AC_DEFUN([LC_PAGECACHE_GET_PAGE], [
1052         AC_MSG_CHECKING([if 'pagecache_get_page' exists])
1053         LB2_LINUX_TEST_RESULT([pagecache_get_page], [
1054                 AC_DEFINE(HAVE_PAGECACHE_GET_PAGE, 1,
1055                         ['pagecache_get_page' is available])
1056         ])
1057 ]) # LC_PAGECACHE_GET_PAGE
1058
1059 #
1060 # LC_HAVE_INTERVAL_BLK_INTEGRITY
1061 #
1062 # 3.17 replace sector_size with interval in struct blk_integrity
1063 #
1064 AC_DEFUN([LC_SRC_HAVE_INTERVAL_BLK_INTEGRITY], [
1065         LB2_LINUX_TEST_SRC([interval_blk_integrity], [
1066                 #include <linux/blkdev.h>
1067         ],[
1068                 ((struct blk_integrity *)0)->interval = 0;
1069         ])
1070 ])
1071 AC_DEFUN([LC_HAVE_INTERVAL_BLK_INTEGRITY], [
1072         AC_MSG_CHECKING([if 'blk_integrity.interval' exist])
1073         LB2_LINUX_TEST_RESULT([interval_blk_integrity], [
1074                 AC_DEFINE(HAVE_INTERVAL_BLK_INTEGRITY, 1,
1075                         [blk_integrity.interval exist])
1076         ])
1077 ]) # LC_HAVE_INTERVAL_BLK_INTEGRITY
1078
1079 #
1080 # LC_KEY_MATCH_DATA
1081 #
1082 # 3.17  replaces key_type::match with match_preparse
1083 #       and has new struct key_match_data
1084 #
1085 AC_DEFUN([LC_SRC_KEY_MATCH_DATA], [
1086         LB2_LINUX_TEST_SRC([key_match], [
1087                 #include <linux/key-type.h>
1088         ],[
1089                 struct key_match_data data;
1090
1091                 data.raw_data = NULL;
1092         ])
1093 ])
1094 AC_DEFUN([LC_KEY_MATCH_DATA], [
1095         AC_MSG_CHECKING([if struct key_match field exist])
1096         LB2_LINUX_TEST_RESULT([key_match], [
1097                 AC_DEFINE(HAVE_KEY_MATCH_DATA, 1, [struct key_match_data exist])
1098         ])
1099 ]) # LC_KEY_MATCH_DATA
1100
1101 #
1102 # LC_HAVE_BLK_INTEGRITY_ITER
1103 #
1104 # Linux commit v3.17-rc5-69-g1859308853b1 replaces
1105 # struct blk_integrity_exchg with struct blk_integrity_iter
1106 #
1107 # LB_CHECK_LINUX_HEADER has already run so we can rely on
1108 # HAVE_LINUX_BLK_INTEGRITY_HEADER being set correctly before
1109 # this test is run.
1110 #
1111 AC_DEFUN([LC_SRC_HAVE_BLK_INTEGRITY_ITER], [
1112         LB2_LINUX_TEST_SRC([blk_integrity_iter], [
1113                 #ifdef HAVE_LINUX_BLK_INTEGRITY_HEADER
1114                 # include <linux/blk-integrity.h>
1115                 #else
1116                 # include <linux/blkdev.h>
1117                 #endif
1118         ],[
1119                 struct blk_integrity_iter iter;
1120
1121                 iter.prot_buf = NULL;
1122         ])
1123 ])
1124 AC_DEFUN([LC_HAVE_BLK_INTEGRITY_ITER], [
1125         AC_MSG_CHECKING([if struct blk_integrity_iter exist])
1126         LB2_LINUX_TEST_RESULT([blk_integrity_iter], [
1127                 AC_DEFINE(HAVE_BLK_INTEGRITY_ITER, 1,
1128                         [kernel has struct blk_integrity_iter])
1129         ])
1130 ]) # LC_HAVE_BLK_INTEGRITY_ITER
1131
1132 #
1133 # LC_NFS_FILLDIR_USE_CTX
1134 #
1135 # 3.18 kernel moved from void cookie to struct dir_context
1136 #
1137 AC_DEFUN([LC_SRC_NFS_FILLDIR_USE_CTX], [
1138         LB2_LINUX_TEST_SRC([filldir_ctx], [
1139                 #include <linux/fs.h>
1140         ],[
1141                 int filldir(struct dir_context *ctx, const char* name,
1142                             int i, loff_t off, u64 tmp, unsigned temp)
1143                 {
1144                         return 0;
1145                 }
1146
1147                 struct dir_context ctx = {
1148                         .actor = filldir,
1149                 };
1150
1151                 ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
1152         ],[-Werror])
1153 ])
1154 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
1155         AC_MSG_CHECKING([if filldir_t uses struct dir_context])
1156         LB2_LINUX_TEST_RESULT([filldir_ctx], [
1157                 AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
1158                         [filldir_t needs struct dir_context as argument])
1159         ])
1160 ]) # LC_NFS_FILLDIR_USE_CTX
1161
1162 #
1163 # LC_PERCPU_COUNTER_INIT
1164 #
1165 # 3.18  For kernels 3.18 and after percpu_counter_init starts
1166 #       to pass a GFP_* memory allocation flag for internal
1167 #       memory allocation purposes.
1168 #
1169 AC_DEFUN([LC_SRC_PERCPU_COUNTER_INIT], [
1170         LB2_LINUX_TEST_SRC([percpu_counter_init], [
1171                 #include <linux/percpu_counter.h>
1172         ],[
1173                 percpu_counter_init(NULL, 0, GFP_KERNEL);
1174         ])
1175 ])
1176 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
1177         AC_MSG_CHECKING([if percpu_counter_init uses GFP_* flag as argument])
1178         LB2_LINUX_TEST_RESULT([percpu_counter_init], [
1179                 AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
1180                         [percpu_counter_init uses GFP_* flag])
1181         ])
1182 ]) # LC_PERCPU_COUNTER_INIT
1183
1184 #
1185 # LC_KIOCB_HAS_NBYTES
1186 #
1187 # 3.19 kernel removed ki_nbytes from struct kiocb
1188 #
1189 AC_DEFUN([LC_SRC_KIOCB_HAS_NBYTES], [
1190         LB2_LINUX_TEST_SRC([ki_nbytes], [
1191                 #include <linux/fs.h>
1192         ],[
1193                 struct kiocb iocb = { };
1194
1195                 iocb.ki_nbytes = 0;
1196         ])
1197 ])
1198 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
1199         AC_MSG_CHECKING([if struct kiocb has ki_nbytes field])
1200         LB2_LINUX_TEST_RESULT([ki_nbytes], [
1201                 AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
1202         ])
1203 ]) # LC_KIOCB_HAS_NBYTES
1204
1205 #
1206 # LC_HAVE_DQUOT_QC_DQBLK
1207 #
1208 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
1209 # Added in commit 14bf61ffe
1210 #
1211 AC_DEFUN([LC_SRC_HAVE_DQUOT_QC_DQBLK], [
1212         LB2_LINUX_TEST_SRC([qc_dqblk], [
1213                 #include <linux/fs.h>
1214                 #include <linux/quota.h>
1215         ],[
1216                 ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
1217         ],[-Werror])
1218 ])
1219 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
1220         AC_MSG_CHECKING([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk])
1221         LB2_LINUX_TEST_RESULT([qc_dqblk], [
1222                 AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
1223                         [quotactl_ops.set_dqblk takes struct qc_dqblk])
1224                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
1225                         [quotactl_ops.set_dqblk takes struct kqid])
1226         ])
1227 ]) # LC_HAVE_DQUOT_QC_DQBLK
1228
1229 #
1230 # LC_HAVE_AIO_COMPLETE
1231 #
1232 # 3.19 kernel makes aio_complete() static
1233 #
1234 AC_DEFUN([LC_SRC_HAVE_AIO_COMPLETE], [
1235         LB2_LINUX_TEST_SRC([aio_complete], [
1236                 #include <linux/aio.h>
1237         ],[
1238                 aio_complete(NULL, 0, 0);
1239         ])
1240 ])
1241 AC_DEFUN([LC_HAVE_AIO_COMPLETE], [
1242         AC_MSG_CHECKING([if kernel has exported aio_complete()])
1243         LB2_LINUX_TEST_RESULT([aio_complete], [
1244                 AC_DEFINE(HAVE_AIO_COMPLETE, 1, [aio_complete defined])
1245         ])
1246 ]) # LC_HAVE_AIO_COMPLETE
1247
1248 #
1249 # LC_HAVE_IS_ROOT_INODE
1250 #
1251 # 3.19 kernel adds is_root_inode()
1252 # Commit a7400222e3eb ("new helper: is_root_inode()")
1253 #
1254 AC_DEFUN([LC_SRC_HAVE_IS_ROOT_INODE], [
1255         LB2_LINUX_TEST_SRC([is_root_inode], [
1256                 #include <linux/fs.h>
1257         ],[
1258                 is_root_inode(NULL);
1259         ],[])
1260 ])
1261 AC_DEFUN([LC_HAVE_IS_ROOT_INODE], [
1262         AC_MSG_CHECKING([if kernel has is_root_inode()])
1263         LB2_LINUX_TEST_RESULT([is_root_inode], [
1264                 AC_DEFINE(HAVE_IS_ROOT_INODE, 1, [is_root_inode defined])
1265         ])
1266 ]) # LC_HAVE_IS_ROOT_INODE
1267
1268 #
1269 # LC_BACKING_DEV_INFO_REMOVAL
1270 #
1271 # 3.20 kernel removed backing_dev_info from address_space
1272 #
1273 AC_DEFUN([LC_SRC_BACKING_DEV_INFO_REMOVAL], [
1274         LB2_LINUX_TEST_SRC([backing_dev_info], [
1275                 #include <linux/fs.h>
1276         ],[
1277                 struct address_space mapping;
1278
1279                 mapping.backing_dev_info = NULL;
1280         ])
1281 ])
1282 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
1283         AC_MSG_CHECKING([if struct address_space has backing_dev_info])
1284         LB2_LINUX_TEST_RESULT([backing_dev_info], [
1285                 AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
1286         ])
1287 ]) # LC_BACKING_DEV_INFO_REMOVAL
1288
1289 #
1290 # LC_HAVE_PROJECT_QUOTA
1291 #
1292 # Kernel version v4.0-rc1-197-g847aac644e92
1293 #
1294 AC_DEFUN([LC_SRC_HAVE_PROJECT_QUOTA], [
1295         LB2_LINUX_TEST_SRC([get_projid], [
1296                 struct inode;
1297                 #include <linux/quota.h>
1298         ],[
1299                 struct dquot_operations ops = { };
1300
1301                 ops.get_projid(NULL, NULL);
1302         ])
1303 ])
1304 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
1305         AC_MSG_CHECKING([if get_projid exists])
1306         LB2_LINUX_TEST_RESULT([get_projid], [
1307                 AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
1308                         [get_projid function exists])
1309         ])
1310 ]) # LC_HAVE_PROJECT_QUOTA
1311
1312 #
1313 # LC_IOV_ITER_RW
1314 #
1315 # 4.1 kernel has iov_iter_rw
1316 #
1317 AC_DEFUN([LC_SRC_IOV_ITER_RW], [
1318         LB2_LINUX_TEST_SRC([iov_iter_rw], [
1319                 #include <linux/fs.h>
1320                 #include <linux/uio.h>
1321         ],[
1322                 struct iov_iter *iter = NULL;
1323
1324                 iov_iter_rw(iter);
1325         ])
1326 ])
1327 AC_DEFUN([LC_IOV_ITER_RW], [
1328         AC_MSG_CHECKING([if iov_iter_rw exist])
1329         LB2_LINUX_TEST_RESULT([iov_iter_rw], [
1330                 AC_DEFINE(HAVE_IOV_ITER_RW, 1, [iov_iter_rw exist])
1331         ])
1332 ]) # LC_IOV_ITER_RW
1333
1334 #
1335 # LC_HAVE_SYNC_READ_WRITE
1336 #
1337 # 4.1 new_sync_[read|write] no longer exported
1338 #
1339 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
1340 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
1341         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
1342                         [new_sync_[read|write] is exported by the kernel])])
1343 ]) # LC_HAVE_SYNC_READ_WRITE
1344
1345 #
1346 # LC_HAVE___BI_CNT
1347 #
1348 # 4.1 redefined bi_cnt as __bi_cnt in commit dac56212e8127dbc0
1349 #
1350 AC_DEFUN([LC_SRC_HAVE___BI_CNT], [
1351         LB2_LINUX_TEST_SRC([have___bi_cnt], [
1352                 #include <asm/atomic.h>
1353                 #include <linux/bio.h>
1354                 #include <linux/blk_types.h>
1355         ],[
1356                 struct bio bio = { };
1357                 int cnt;
1358                 cnt = atomic_read(&bio.__bi_cnt);
1359         ])
1360 ])
1361 AC_DEFUN([LC_HAVE___BI_CNT], [
1362         AC_MSG_CHECKING([if Linux kernel has __bi_cnt in struct bio])
1363         LB2_LINUX_TEST_RESULT([have___bi_cnt], [
1364                 AC_DEFINE(HAVE___BI_CNT, 1, [struct bio has __bi_cnt])
1365         ])
1366 ]) # LC_HAVE___BI_CNT
1367
1368 #
1369 # LC_SYMLINK_OPS_USE_NAMEIDATA
1370 #
1371 # For the 4.2+ kernels the file system internal symlink api no
1372 # longer uses struct nameidata as a argument
1373 #
1374 AC_DEFUN([LC_SRC_SYMLINK_OPS_USE_NAMEIDATA], [
1375         LB2_LINUX_TEST_SRC([symlink_use_nameidata], [
1376                 #include <linux/namei.h>
1377                 #include <linux/fs.h>
1378         ],[
1379                 struct nameidata *nd = NULL;
1380
1381                 ((struct inode_operations *)0)->follow_link(NULL, nd);
1382                 ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
1383         ])
1384 ])
1385 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
1386         AC_MSG_CHECKING([if symlink inode operations have struct nameidata argument])
1387         LB2_LINUX_TEST_RESULT([symlink_use_nameidata], [
1388                 AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
1389                         [symlink inode operations need struct nameidata argument])
1390         ])
1391 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
1392
1393 #
1394 # LC_BIO_ENDIO_USES_ONE_ARG
1395 #
1396 # 4.2 kernel bio_endio now only takes one argument
1397 #
1398 AC_DEFUN([LC_SRC_BIO_ENDIO_USES_ONE_ARG], [
1399         LB2_LINUX_TEST_SRC([bio_endio], [
1400                 #include <linux/bio.h>
1401         ],[
1402                 bio_endio(NULL);
1403         ])
1404 ])
1405 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
1406         AC_MSG_CHECKING([if 'bio_endio' with one argument exist])
1407         LB2_LINUX_TEST_RESULT([bio_endio], [
1408                 AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
1409                         [bio_endio takes only one argument])
1410         ])
1411 ]) # LC_BIO_ENDIO_USES_ONE_ARG
1412
1413 #
1414 # LC_ACCOUNT_PAGE_DIRTIED_3ARGS
1415 #
1416 # 4.2 [to 4.5] kernel page dirtied takes 3 arguments
1417 #
1418 AC_DEFUN([LC_SRC_ACCOUNT_PAGE_DIRTIED_3ARGS], [
1419         LB2_LINUX_TEST_SRC([account_page_dirtied_3a], [
1420                 #include <linux/mm.h>
1421         ],[
1422                 account_page_dirtied(NULL, NULL, NULL);
1423         ])
1424 ])
1425 AC_DEFUN([LC_ACCOUNT_PAGE_DIRTIED_3ARGS], [
1426         AC_MSG_CHECKING([if 'account_page_dirtied' with 3 args exists])
1427         LB2_LINUX_TEST_RESULT([account_page_dirtied_3a], [
1428                 AC_DEFINE(HAVE_ACCOUNT_PAGE_DIRTIED_3ARGS, 1,
1429                         [account_page_dirtied takes three arguments])
1430         ])
1431 ]) # LC_ACCOUNT_PAGE_DIRTIED_3ARGS
1432
1433 #
1434 # LC_HAVE_CRYPTO_ALLOC_SKCIPHER
1435 #
1436 # Kernel version 4.12 commit 7a7ffe65c8c5
1437 # introduced crypto_alloc_skcipher().
1438 #
1439 AC_DEFUN([LC_SRC_HAVE_CRYPTO_ALLOC_SKCIPHER], [
1440         LB2_LINUX_TEST_SRC([crypto_alloc_skcipher], [
1441                 #include <crypto/skcipher.h>
1442         ],[
1443                 crypto_alloc_skcipher(NULL, 0, 0);
1444         ])
1445 ])
1446 AC_DEFUN([LC_HAVE_CRYPTO_ALLOC_SKCIPHER], [
1447         AC_MSG_CHECKING([if crypto_alloc_skcipher is defined])
1448         LB2_LINUX_TEST_RESULT([crypto_alloc_skcipher], [
1449                 AC_DEFINE(HAVE_CRYPTO_ALLOC_SKCIPHER, 1,
1450                         [crypto_alloc_skcipher is defined])
1451         ])
1452 ]) # LC_HAVE_CRYPTO_ALLOC_SKCIPHER
1453
1454 #
1455 # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
1456 #
1457 # 4.3 replace interval with interval_exp in 'struct blk_integrity'
1458 # 'struct blk_integrity_profile' is also added in this version,
1459 # thus use this to determine whether 'struct blk_integrity' has profile
1460 #
1461 AC_DEFUN([LC_SRC_HAVE_INTERVAL_EXP_BLK_INTEGRITY], [
1462         LB2_LINUX_TEST_SRC([blk_integrity_interval_exp], [
1463                 #include <linux/blkdev.h>
1464         ],[
1465                 ((struct blk_integrity *)0)->interval_exp = 0;
1466         ])
1467 ])
1468 AC_DEFUN([LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY], [
1469         AC_MSG_CHECKING([if 'blk_integrity.interval_exp' exist])
1470         LB2_LINUX_TEST_RESULT([blk_integrity_interval_exp], [
1471                 AC_DEFINE(HAVE_INTERVAL_EXP_BLK_INTEGRITY, 1,
1472                         [blk_integrity.interval_exp exist])
1473         ])
1474 ]) # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
1475
1476 #
1477 # LC_HAVE_CACHE_HEAD_HLIST
1478 #
1479 # 4.3 kernel swiched to hlist for cache_head
1480 #
1481 AC_DEFUN([LC_SRC_HAVE_CACHE_HEAD_HLIST], [
1482         LB2_LINUX_TEST_SRC([cache_head_has_hlist], [
1483                 #include <linux/sunrpc/cache.h>
1484         ],[
1485                 do {} while(sizeof(((struct cache_head *)0)->cache_list));
1486         ])
1487 ])
1488 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
1489         AC_MSG_CHECKING([if 'struct cache_head' has 'cache_list' field])
1490         LB2_LINUX_TEST_RESULT([cache_head_has_hlist], [
1491                 AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
1492                         [cache_head has hlist cache_list])
1493         ])
1494 ]) # LC_HAVE_CACHE_HEAD_HLIST
1495
1496 #
1497 # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
1498 #
1499 # Kernel version 4.3 commit e409de992e3ea3674393465f07cc71c948edd87a
1500 # simplified xattr_handler handling by passing in the handler pointer
1501 #
1502 AC_DEFUN([LC_SRC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
1503         LB2_LINUX_TEST_SRC([xattr_handler_simplified], [
1504                 #include <linux/xattr.h>
1505         ],[
1506                 struct xattr_handler handler;
1507
1508                 ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, 0);
1509                 ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, 0, 0);
1510         ],[-Werror])
1511 ])
1512 AC_DEFUN([LC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
1513         AC_MSG_CHECKING([if 'struct xattr_handler' functions pass in handler pointer])
1514         LB2_LINUX_TEST_RESULT([xattr_handler_simplified], [
1515                 AC_DEFINE(HAVE_XATTR_HANDLER_SIMPLIFIED, 1,
1516                         [handler pointer is parameter])
1517         ])
1518 ]) # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
1519
1520 #
1521 # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
1522 #
1523 # 4.3 replace interval with interval_exp in 'struct blk_integrity'.
1524 #
1525 AC_DEFUN([LC_SRC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD], [
1526         LB2_LINUX_TEST_SRC([bio_integrity_payload_bip_iter], [
1527                 #include <linux/bio.h>
1528         ],[
1529                 ((struct bio_integrity_payload *)0)->bip_iter.bi_size = 0;
1530         ])
1531 ])
1532 AC_DEFUN([LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD], [
1533         AC_MSG_CHECKING([if 'bio_integrity_payload.bip_iter' exist])
1534         LB2_LINUX_TEST_RESULT([bio_integrity_payload_bip_iter], [
1535                 AC_DEFINE(HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD, 1,
1536                         [bio_integrity_payload.bip_iter exist])
1537         ])
1538 ]) # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
1539
1540 #
1541 # LC_BIO_INTEGRITY_PREP_FN
1542 #
1543 # Lustre kernel patch extents bio_integrity_prep to accept optional
1544 # generate/verify_fn as extra args.
1545 #
1546 AC_DEFUN([LC_SRC_BIO_INTEGRITY_PREP_FN], [
1547         LB2_LINUX_TEST_SRC([bio_integrity_prep_fn], [
1548                 #include <linux/bio.h>
1549         ],[
1550                 bio_integrity_prep_fn(NULL, NULL, NULL);
1551         ])
1552 ])
1553 AC_DEFUN([LC_BIO_INTEGRITY_PREP_FN], [
1554         AC_MSG_CHECKING([if 'bio_integrity_prep_fn' exists])
1555         LB2_LINUX_TEST_RESULT([bio_integrity_prep_fn], [
1556                 AC_DEFINE(HAVE_BIO_INTEGRITY_PREP_FN, 1,
1557                         [kernel has bio_integrity_prep_fn])
1558                 AC_SUBST(PATCHED_INTEGRITY_INTF)
1559         ],[
1560                 AC_SUBST(PATCHED_INTEGRITY_INTF, [#])
1561         ])
1562 ]) # LC_BIO_INTEGRITY_PREP_FN
1563
1564 # LC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL
1565 #
1566 # 13 kernel integrity API has changed and in 4.13+
1567 # (as well as in rhel 8.4) bio_integrity_prep() returns boolean true
1568 # on success.
1569 #
1570 AC_DEFUN([LC_SRC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL], [
1571         LB2_LINUX_TEST_SRC([bio_integrity_prep_ret_bool], [
1572                 #include <linux/bio.h>
1573                 #include <linux/typecheck.h>
1574         ],[
1575                 #pragma GCC diagnostic warning "-Werror"
1576                 typedef bool (*bio_integrity_prep_type)(struct bio *bio) ;
1577
1578                 typecheck_fn(bio_integrity_prep_type, bio_integrity_prep);
1579         ])
1580 ])
1581 AC_DEFUN([LC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL], [
1582         AC_MSG_CHECKING([if 'bio_integrity_prep_fn' returns bool])
1583         LB2_LINUX_TEST_RESULT([bio_integrity_prep_ret_bool], [
1584                 AC_DEFINE(HAVE_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL, 1,
1585                         [bio_integrity_prep_fn returns bool])
1586         ])
1587 ]) # LC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL
1588
1589 #
1590 # LC_HAVE_BI_OPF
1591 #
1592 # 4.4/4.8 redefined bi_rw as bi_opf (SLES12/kernel commit 4382e33ad37486)
1593 #
1594 AC_DEFUN([LC_SRC_HAVE_BI_OPF], [
1595         LB2_LINUX_TEST_SRC([have_bi_opf], [
1596                 #include <linux/bio.h>
1597         ],[
1598                 struct bio bio;
1599
1600                 bio.bi_opf = 0;
1601         ])
1602 ])
1603 AC_DEFUN([LC_HAVE_BI_OPF], [
1604         AC_MSG_CHECKING([if Linux kernel has bi_opf in struct bio])
1605         LB2_LINUX_TEST_RESULT([have_bi_opf], [
1606                 AC_DEFINE(HAVE_BI_OPF, 1, [struct bio has bi_opf])
1607         ])
1608 ]) # LC_HAVE_BI_OPF
1609
1610 #
1611 # LC_HAVE_SUBMIT_BIO_2ARGS
1612 #
1613 # 4.4 removed an argument from submit_bio
1614 #
1615 AC_DEFUN([LC_SRC_HAVE_SUBMIT_BIO_2ARGS], [
1616         LB2_LINUX_TEST_SRC([have_submit_bio_2args], [
1617                 #include <linux/bio.h>
1618         ],[
1619                 struct bio bio;
1620                 submit_bio(READ, &bio);
1621         ])
1622 ])
1623 AC_DEFUN([LC_HAVE_SUBMIT_BIO_2ARGS], [
1624         AC_MSG_CHECKING([if submit_bio takes two arguments])
1625         LB2_LINUX_TEST_RESULT([have_submit_bio_2args], [
1626                 AC_DEFINE(HAVE_SUBMIT_BIO_2ARGS, 1,
1627                         [submit_bio takes two arguments])
1628         ])
1629 ]) # LC_HAVE_SUBMIT_BIO_2_ARGS
1630
1631 #
1632 # LC_HAVE_CLEAN_BDEV_ALIASES
1633 #
1634 # 4.4/4.9 unmap_underlying_metadata was replaced by clean_bdev_aliases
1635 # (SLES12/kernel commit 29f3ad7d8380364c)
1636 #
1637 AC_DEFUN([LC_SRC_HAVE_CLEAN_BDEV_ALIASES], [
1638         LB2_LINUX_TEST_SRC([have_clean_bdev_aliases], [
1639                 #include <linux/buffer_head.h>
1640         ],[
1641                 clean_bdev_aliases(NULL,1,1);
1642         ])
1643 ])
1644 AC_DEFUN([LC_HAVE_CLEAN_BDEV_ALIASES], [
1645         AC_MSG_CHECKING([if kernel has clean_bdev_aliases])
1646         LB2_LINUX_TEST_RESULT([have_clean_bdev_aliases], [
1647                 AC_DEFINE(HAVE_CLEAN_BDEV_ALIASES, 1,
1648                         [kernel has clean_bdev_aliases])
1649         ])
1650 ]) # LC_HAVE_CLEAN_BDEV_ALIASES
1651
1652 #
1653 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
1654 #
1655 # 4.4 kernel have moved locks API users to
1656 # locks_lock_inode_wait()
1657 #
1658 AC_DEFUN([LC_SRC_HAVE_LOCKS_LOCK_FILE_WAIT], [
1659         LB2_LINUX_TEST_SRC([locks_lock_file_wait], [
1660                 #include <linux/fs.h>
1661         ],[
1662                 locks_lock_file_wait(NULL, NULL);
1663         ])
1664 ])
1665 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
1666         AC_MSG_CHECKING([if 'locks_lock_file_wait' exists])
1667         LB2_LINUX_TEST_RESULT([locks_lock_file_wait], [
1668                 AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
1669                         [kernel has locks_lock_file_wait])
1670         ])
1671 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
1672
1673 #
1674 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
1675 #
1676 # 4.4 kernel merged type-specific data with the payload data for keys
1677 #
1678 AC_DEFUN([LC_SRC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
1679         LB2_LINUX_TEST_SRC([key_payload_data_array], [
1680                 #include <linux/key.h>
1681         ],[
1682                 struct key key = { };
1683
1684                 key.payload.data[0] = NULL;
1685         ])
1686 ])
1687 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
1688         AC_MSG_CHECKING([if 'struct key' has 'payload.data' as an array])
1689         LB2_LINUX_TEST_RESULT([key_payload_data_array], [
1690                 AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
1691         ])
1692 ]) # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
1693
1694 #
1695 # LC_HAVE_XATTR_HANDLER_NAME
1696 #
1697 # Kernel version 4.4 commit 98e9cb5711c68223f0e4d5201b9a6add255ec550
1698 # add a name member to struct xattr_handler
1699 #
1700 AC_DEFUN([LC_SRC_HAVE_XATTR_HANDLER_NAME], [
1701         LB2_LINUX_TEST_SRC([xattr_handler_name], [
1702                 #include <linux/xattr.h>
1703         ],[
1704                 ((struct xattr_handler *)NULL)->name = NULL;
1705         ],[-Werror])
1706 ])
1707 AC_DEFUN([LC_HAVE_XATTR_HANDLER_NAME], [
1708         AC_MSG_CHECKING([if 'struct xattr_handler' has a name member])
1709         LB2_LINUX_TEST_RESULT([xattr_handler_name], [
1710                 AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1,
1711                         [xattr_handler has a name member])
1712         ])
1713 ]) # LC_HAVE_XATTR_HANDLER_NAME
1714
1715 #
1716 # LC_HAVE_FILE_DENTRY
1717 #
1718 # 4.5 adds wrapper file_dentry
1719 #
1720 AC_DEFUN([LC_SRC_HAVE_FILE_DENTRY], [
1721         LB2_LINUX_TEST_SRC([file_dentry], [
1722                 #include <linux/fs.h>
1723         ],[
1724                 file_dentry(NULL);
1725         ])
1726 ])
1727 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
1728         AC_MSG_CHECKING([if Linux kernel has 'file_dentry'])
1729         LB2_LINUX_TEST_RESULT([file_dentry], [
1730                 AC_DEFINE(HAVE_FILE_DENTRY, 1, [kernel has file_dentry])
1731         ])
1732 ]) # LC_HAVE_FILE_DENTRY
1733
1734 #
1735 # LC_HAVE_INODE_LOCK
1736 #
1737 # 4.5 introduced inode_lock
1738 #
1739 AC_DEFUN([LC_SRC_HAVE_INODE_LOCK], [
1740         LB2_LINUX_TEST_SRC([inode_lock], [
1741                 #include <linux/fs.h>
1742         ],[
1743                 inode_lock(NULL);
1744         ])
1745 ])
1746 AC_DEFUN([LC_HAVE_INODE_LOCK], [
1747         AC_MSG_CHECKING([if 'inode_lock' is defined])
1748         LB2_LINUX_TEST_RESULT([inode_lock], [
1749                 AC_DEFINE(HAVE_INODE_LOCK, 1, [inode_lock is defined])
1750         ])
1751 ]) # LC_HAVE_INODE_LOCK
1752
1753 #
1754 # LC_HAVE_IOP_GET_LINK
1755 #
1756 # 4.5 vfs replaced iop->follow_link with
1757 # iop->get_link
1758 #
1759 AC_DEFUN([LC_SRC_HAVE_IOP_GET_LINK], [
1760         LB2_LINUX_TEST_SRC([inode_ops_get_link], [
1761                 #include <linux/fs.h>
1762         ],[
1763                 struct inode_operations iop;
1764                 iop.get_link = NULL;
1765         ])
1766 ])
1767 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
1768         AC_MSG_CHECKING([if 'iop' has 'get_link'])
1769         LB2_LINUX_TEST_RESULT([inode_ops_get_link], [
1770                 AC_DEFINE(HAVE_IOP_GET_LINK, 1, [have iop get_link])
1771         ])
1772 ]) # LC_HAVE_IOP_GET_LINK
1773
1774 #
1775 # LC_HAVE_IN_COMPAT_SYSCALL
1776 #
1777 # 4.6 renamed is_compat_task to in_compat_syscall
1778 #
1779 AC_DEFUN([LC_SRC_HAVE_IN_COMPAT_SYSCALL], [
1780         LB2_LINUX_TEST_SRC([in_compat_syscall], [
1781                 #include <linux/compat.h>
1782         ],[
1783                 in_compat_syscall();
1784         ])
1785 ])
1786 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
1787         AC_MSG_CHECKING([if 'in_compat_syscall' is defined])
1788         LB2_LINUX_TEST_RESULT([in_compat_syscall], [
1789                 AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1, [have in_compat_syscall])
1790         ])
1791 ]) # LC_HAVE_IN_COMPAT_SYSCALL
1792
1793 #
1794 # LC_HAVE_XATTR_HANDLER_INODE_PARAM
1795 #
1796 # Kernel version 4.6 commit b296821a7c42fa58baa17513b2b7b30ae66f3336
1797 # and commit 5930122683dff58f0846b0f0405b4bd598a3ba6a added inode parameter
1798 # to xattr_handler functions
1799 #
1800 AC_DEFUN([LC_SRC_HAVE_XATTR_HANDLER_INODE_PARAM], [
1801         LB2_LINUX_TEST_SRC([xattr_handler_inode_param], [
1802                 #include <linux/xattr.h>
1803         ],[
1804                 const struct xattr_handler handler;
1805
1806                 ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, NULL, 0);
1807                 ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, NULL, 0, 0);
1808         ],[-Werror])
1809 ])
1810 AC_DEFUN([LC_HAVE_XATTR_HANDLER_INODE_PARAM], [
1811         AC_MSG_CHECKING([if 'struct xattr_handler' functions have inode parameter])
1812         LB2_LINUX_TEST_RESULT([xattr_handler_inode_param], [
1813                 AC_DEFINE(HAVE_XATTR_HANDLER_INODE_PARAM, 1, [needs inode parameter])
1814         ])
1815 ]) # LC_HAVE_XATTR_HANDLER_INODE_PARAM
1816
1817 #
1818 # LC_D_IN_LOOKUP
1819 #
1820 # Kernel version 4.6 commit 85c7f81041d57cfe9dc97f4680d5586b54534a39
1821 # introduced parallel lookups in the VFS layer. The inline function
1822 # d_in_lookup was added to notify when the same item was being queried
1823 # at the same time.
1824 #
1825 AC_DEFUN([LC_SRC_D_IN_LOOKUP], [
1826         LB2_LINUX_TEST_SRC([d_in_lookup], [
1827                 #include <linux/dcache.h>
1828         ],[
1829                 d_in_lookup(NULL);
1830         ],[-Werror])
1831 ])
1832 AC_DEFUN([LC_D_IN_LOOKUP], [
1833         AC_MSG_CHECKING([if 'd_in_lookup' is defined])
1834         LB2_LINUX_TEST_RESULT([d_in_lookup], [
1835                 AC_DEFINE(HAVE_D_IN_LOOKUP, 1, [d_in_lookup is defined])
1836         ])
1837 ]) # LC_D_IN_LOOKUP
1838
1839 #
1840 # LC_LOCK_PAGE_MEMCG
1841 #
1842 # Kernel version 4.6 adds lock_page_memcg(page)
1843 # Linux commit v5.15-12273-gab2f9d2d3626
1844 #   mm: unexport {,un}lock_page_memcg
1845 #
1846 AC_DEFUN([LC_SRC_LOCK_PAGE_MEMCG], [
1847         LB2_LINUX_TEST_SRC([lock_page_memcg], [
1848                 #include <linux/memcontrol.h>
1849         ],[
1850                 lock_page_memcg(NULL);
1851         ],[-Werror])
1852 ])
1853 AC_DEFUN([LC_LOCK_PAGE_MEMCG], [
1854         AC_MSG_CHECKING([if 'lock_page_memcg' is defined])
1855         LB2_LINUX_TEST_RESULT([lock_page_memcg], [
1856                 AC_DEFINE(HAVE_LOCK_PAGE_MEMCG, 1, [lock_page_memcg is defined])
1857         ])
1858 ]) # LC_LOCK_PAGE_MEMCG
1859
1860 #
1861 # LC_HAVE_DOWN_WRITE_KILLABLE
1862 #
1863 # Kernel version v4.6-rc3-28-g916633a40370
1864 #
1865 AC_DEFUN([LC_SRC_HAVE_DOWN_WRITE_KILLABLE], [
1866         LB2_LINUX_TEST_SRC([down_write_killable], [
1867                 #include <linux/rwsem.h>
1868
1869                 struct rw_semaphore sem;
1870         ],[
1871                 int rc;
1872
1873                 rc = down_write_killable(&sem);
1874                 (void)rc;
1875         ])
1876 ])
1877 AC_DEFUN([LC_HAVE_DOWN_WRITE_KILLABLE], [
1878         AC_MSG_CHECKING([if down_write_killable exists])
1879         LB2_LINUX_TEST_RESULT([down_write_killable], [
1880                 AC_DEFINE(HAVE_DOWN_WRITE_KILLABLE, 1,
1881                         [down_write_killable function exists])
1882         ])
1883 ]) # LC_HAVE_DOWN_WRITE_KILLABLE
1884
1885 #
1886 # LC_D_INIT
1887 #
1888 # Kernel version 4.7-rc5 commit 285b102d3b745f3c2c110c9c327741d87e64aacc
1889 # add new d_init to initialize dentry at allocation time
1890 #
1891 AC_DEFUN([LC_SRC_D_INIT], [
1892         LB2_LINUX_TEST_SRC([d_init], [
1893                 #include <linux/dcache.h>
1894         ],[
1895                 struct dentry_operations ops = { };
1896                 int rc;
1897
1898                 rc = ops.d_init(NULL);
1899         ])
1900 ])
1901 AC_DEFUN([LC_D_INIT], [
1902         AC_MSG_CHECKING([if dentry operations supports 'd_init'])
1903         LB2_LINUX_TEST_RESULT([d_init], [
1904                 AC_DEFINE(HAVE_D_INIT, 1, ['d_init' exists])
1905         ])
1906 ]) # LC_D_INIT
1907
1908 #
1909 # LC_DIRECTIO_2ARGS
1910 #
1911 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
1912 # direct-io: eliminate the offset argument to ->direct_IO
1913 #
1914 AC_DEFUN([LC_SRC_DIRECTIO_2ARGS], [
1915         LB2_LINUX_TEST_SRC([direct_io_2args], [
1916                 #include <linux/fs.h>
1917         ],[
1918                 struct address_space_operations ops = { };
1919                 struct iov_iter *iter = NULL;
1920                 struct kiocb *iocb = NULL;
1921                 int rc;
1922
1923                 rc = ops.direct_IO(iocb, iter);
1924         ])
1925 ])
1926 AC_DEFUN([LC_DIRECTIO_2ARGS], [
1927         AC_MSG_CHECKING([if '->direct_IO()' takes 2 arguments])
1928         LB2_LINUX_TEST_RESULT([direct_io_2args], [
1929                 AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1, [direct_IO has 2 arguments])
1930         ])
1931 ]) # LC_DIRECTIO_2ARGS
1932
1933 #
1934 # LC_GENERIC_WRITE_SYNC_2ARGS
1935 #
1936 # Kernel version 4.7 commit dde0c2e79848298cc25621ad080d47f94dbd7cce
1937 # fs: add IOCB_SYNC and IOCB_DSYNC
1938 #
1939 AC_DEFUN([LC_SRC_GENERIC_WRITE_SYNC_2ARGS], [
1940         LB2_LINUX_TEST_SRC([generic_write_sync_2args], [
1941                 #include <linux/fs.h>
1942         ],[
1943                 struct kiocb *iocb = NULL;
1944                 ssize_t rc;
1945
1946                 rc = generic_write_sync(iocb, 0);
1947         ])
1948 ])
1949 AC_DEFUN([LC_GENERIC_WRITE_SYNC_2ARGS], [
1950         AC_MSG_CHECKING([if 'generic_write_sync()' takes 2 arguments])
1951         LB2_LINUX_TEST_RESULT([generic_write_sync_2args], [
1952                 AC_DEFINE(HAVE_GENERIC_WRITE_SYNC_2ARGS, 1,
1953                         [generic_write_sync has 2 arguments])
1954         ])
1955 ]) # LC_GENERIC_WRITE_SYNC_2ARGS
1956
1957 #
1958 # LC_FOP_ITERATE_SHARED
1959 #
1960 # Kernel v4.6-rc3-29-g6192269 adds iterate_shared method to file_operations
1961 #
1962 AC_DEFUN([LC_SRC_FOP_ITERATE_SHARED], [
1963         LB2_LINUX_TEST_SRC([fop_iterate_shared], [
1964                 #include <linux/fs.h>
1965         ],[
1966                 struct file_operations fop;
1967                 fop.iterate_shared = NULL;
1968         ])
1969 ])
1970 AC_DEFUN([LC_FOP_ITERATE_SHARED], [
1971         AC_MSG_CHECKING([if 'file_operations' has 'iterate_shared'])
1972         LB2_LINUX_TEST_RESULT([fop_iterate_shared], [
1973                 AC_DEFINE(HAVE_FOP_ITERATE_SHARED, 1,
1974                         [file_operations has iterate_shared])
1975         ])
1976 ]) # LC_FOP_ITERATE_SHARED
1977
1978 #
1979 # LC_EXPORT_DEFAULT_FILE_SPLICE_READ
1980 #
1981 # 4.8-rc8 commit 82c156f853840645604acd7c2cebcb75ed1b6652 switched
1982 # generic_file_splice_read() to using ->read_iter. We can test this
1983 # change since default_file_splice_read() is no longer exported.
1984 #
1985 AC_DEFUN([LC_EXPORT_DEFAULT_FILE_SPLICE_READ], [
1986 LB_CHECK_EXPORT([default_file_splice_read], [fs/splice.c],
1987         [AC_DEFINE(HAVE_DEFAULT_FILE_SPLICE_READ_EXPORT, 1,
1988                         [default_file_splice_read is exported])])
1989 ]) # LC_EXPORT_DEFAULT_FILE_SPLCE_READ
1990
1991 #
1992 # LC_HAVE_POSIX_ACL_VALID_USER_NS
1993 #
1994 # 4.8 posix_acl_valid takes struct user_namespace
1995 #
1996 AC_DEFUN([LC_SRC_HAVE_POSIX_ACL_VALID_USER_NS], [
1997         LB2_LINUX_TEST_SRC([posix_acl_valid], [
1998                 #include <linux/fs.h>
1999                 #include <linux/posix_acl.h>
2000         ],[
2001                 posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
2002         ])
2003 ])
2004 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
2005         AC_MSG_CHECKING([if 'posix_acl_valid' takes 'struct user_namespace'])
2006         LB2_LINUX_TEST_RESULT([posix_acl_valid], [
2007                 AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
2008                         [posix_acl_valid takes struct user_namespace])
2009         ])
2010 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
2011
2012 #
2013 # LC_D_COMPARE_4ARGS
2014 #
2015 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
2016 # get rid of 'parent' argument of ->d_compare()
2017 #
2018 AC_DEFUN([LC_SRC_D_COMPARE_4ARGS], [
2019         LB2_LINUX_TEST_SRC([d_compare_4args], [
2020                 #include <linux/dcache.h>
2021         ],[
2022                 ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
2023         ])
2024 ])
2025 AC_DEFUN([LC_D_COMPARE_4ARGS], [
2026         AC_MSG_CHECKING([if 'd_compare' taken 4 arguments])
2027         LB2_LINUX_TEST_RESULT([d_compare_4args], [
2028                 AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
2029                         [d_compare need 4 arguments])
2030         ])
2031 ]) # LC_D_COMPARE_4ARGS
2032
2033 #
2034 # LC_FULL_NAME_HASH_3ARGS
2035 #
2036 # Kernel version 4.8 commit 8387ff2577eb9ed245df9a39947f66976c6bcd02
2037 # vfs: make the string hashes salt the hash
2038 #
2039 AC_DEFUN([LC_SRC_FULL_NAME_HASH_3ARGS], [
2040         LB2_LINUX_TEST_SRC([full_name_hash_3args], [
2041                 #include <linux/stringhash.h>
2042         ],[
2043                 unsigned int hash;
2044                 hash = full_name_hash(NULL,NULL,0);
2045         ])
2046 ])
2047 AC_DEFUN([LC_FULL_NAME_HASH_3ARGS], [
2048         AC_MSG_CHECKING([if 'full_name_hash' taken 3 arguments])
2049         LB2_LINUX_TEST_RESULT([full_name_hash_3args], [
2050                 AC_DEFINE(HAVE_FULL_NAME_HASH_3ARGS, 1,
2051                         [full_name_hash need 3 arguments])
2052         ])
2053 ]) # LC_FULL_NAME_HASH_3ARGS
2054
2055 #
2056 # LC_STRUCT_POSIX_ACL_XATTR
2057 #
2058 # Kernel version 4.8 commit 2211d5ba5c6c4e972ba6dbc912b2897425ea6621
2059 # posix_acl: xattr representation cleanups
2060 #
2061 AC_DEFUN([LC_SRC_STRUCT_POSIX_ACL_XATTR], [
2062         LB2_LINUX_TEST_SRC([struct_posix_acl_xattr], [
2063                 #include <linux/fs.h>
2064                 #include <linux/posix_acl_xattr.h>
2065         ],[
2066                 struct posix_acl_xattr_header *h = NULL;
2067                 struct posix_acl_xattr_entry  *e;
2068                 e = (void *)(h + 1);
2069         ])
2070 ])
2071 AC_DEFUN([LC_STRUCT_POSIX_ACL_XATTR], [
2072         AC_MSG_CHECKING([if 'struct posix_acl_xattr_{header,entry}' defined])
2073         LB2_LINUX_TEST_RESULT([struct_posix_acl_xattr], [
2074                 AC_DEFINE(HAVE_STRUCT_POSIX_ACL_XATTR, 1,
2075                         [struct posix_acl_xattr_{header,entry} defined])
2076         ])
2077 ]) # LC_STRUCT_POSIX_ACL_XATTR
2078
2079 #
2080 # LC_IOP_XATTR
2081 #
2082 # Kernel version 4.8 commit fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42
2083 # removed {get,set,remove}xattr inode operations
2084 #
2085 AC_DEFUN([LC_SRC_IOP_XATTR], [
2086         LB2_LINUX_TEST_SRC([inode_ops_xattr], [
2087                 #include <linux/fs.h>
2088         ],[
2089                 struct inode_operations iop;
2090                 iop.setxattr = NULL;
2091                 iop.getxattr = NULL;
2092                 iop.removexattr = NULL;
2093         ])
2094 ])
2095 AC_DEFUN([LC_IOP_XATTR], [
2096         AC_MSG_CHECKING([if 'inode_operations' has {get,set,remove}xattr members])
2097         LB2_LINUX_TEST_RESULT([inode_ops_xattr], [
2098                 AC_DEFINE(HAVE_IOP_XATTR, 1,
2099                         [inode_operations has {get,set,remove}xattr members])
2100         ])
2101 ]) # LC_IOP_XATTR
2102
2103 #
2104 # LC_GROUP_INFO_GID
2105 #
2106 # Kernel version 4.9 commit 81243eacfa400f5f7b89f4c2323d0de9982bb0fb
2107 # cred: simpler, 1D supplementary groups
2108 #
2109 AC_DEFUN([LC_SRC_GROUP_INFO_GID], [
2110         LB2_LINUX_TEST_SRC([group_info_gid], [
2111                 #include <linux/cred.h>
2112         ],[
2113                 kgid_t *p;
2114                 p = ((struct group_info *)0)->gid;
2115         ])
2116 ])
2117 AC_DEFUN([LC_GROUP_INFO_GID], [
2118         AC_MSG_CHECKING([if 'struct group_info' has member 'gid'])
2119         LB2_LINUX_TEST_RESULT([group_info_gid], [
2120                 AC_DEFINE(HAVE_GROUP_INFO_GID, 1,
2121                         [struct group_info has member gid])
2122         ])
2123 ]) # LC_GROUP_INFO_GID
2124
2125 #
2126 # LC_VFS_SETXATTR
2127 #
2128 # Kernel version 4.9 commit 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4
2129 # added __vfs_{get,set,remove}xattr helpers
2130 #
2131 AC_DEFUN([LC_SRC_VFS_SETXATTR], [
2132         LB2_LINUX_TEST_SRC([vfs_setxattr], [
2133                 #include <linux/xattr.h>
2134         ],[
2135                 __vfs_setxattr(NULL, NULL, NULL, NULL, 0, 0);
2136         ])
2137 ])
2138 AC_DEFUN([LC_VFS_SETXATTR], [
2139         AC_MSG_CHECKING([if '__vfs_setxattr' helper is available])
2140         LB2_LINUX_TEST_RESULT([vfs_setxattr], [
2141                 AC_DEFINE(HAVE_VFS_SETXATTR, 1, ['__vfs_setxattr' is available])
2142         ])
2143 ]) # LC_VFS_SETXATTR
2144
2145 #
2146 # LC_POSIX_ACL_UPDATE_MODE
2147 #
2148 # Kernel version 4.9 commit 073931017b49d9458aa351605b43a7e34598caef
2149 # posix_acl: Clear SGID bit when setting file permissions
2150 #
2151 AC_DEFUN([LC_SRC_POSIX_ACL_UPDATE_MODE], [
2152         LB2_LINUX_TEST_SRC([posix_acl_update_mode], [
2153                 #include <linux/fs.h>
2154                 #include <linux/posix_acl.h>
2155         ],[
2156                 posix_acl_update_mode(NULL, NULL, NULL);
2157         ])
2158 ])
2159 AC_DEFUN([LC_POSIX_ACL_UPDATE_MODE], [
2160         AC_MSG_CHECKING([if 'posix_acl_update_mode' exists])
2161         LB2_LINUX_TEST_RESULT([posix_acl_update_mode], [
2162                 AC_DEFINE(HAVE_POSIX_ACL_UPDATE_MODE, 1,
2163                         ['posix_acl_update_mode' is available])
2164         ])
2165 ]) # LC_POSIX_ACL_UPDATE_MODE
2166
2167 #
2168 # LC_HAVE_BDI_IO_PAGES
2169 #
2170 # Kernel version 4.9 commit 9491ae4aade6814afcfa67f4eb3e3342c2b39750
2171 # mm: don't cap request size based on read-ahead setting
2172 # This patch introduces a bdi hint, io_pages.
2173 #
2174 AC_DEFUN([LC_SRC_HAVE_BDI_IO_PAGES], [
2175         LB2_LINUX_TEST_SRC([bdi_has_io_pages], [
2176                 #include <linux/backing-dev.h>
2177         ],[
2178                 struct backing_dev_info info;
2179
2180                 info.io_pages = 0;
2181         ])
2182 ])
2183 AC_DEFUN([LC_HAVE_BDI_IO_PAGES], [
2184         AC_MSG_CHECKING([if 'struct backing_dev_info' has 'io_pages' field])
2185         LB2_LINUX_TEST_RESULT([bdi_has_io_pages], [
2186                 AC_DEFINE(HAVE_BDI_IO_PAGES, 1,
2187                         [backing_dev_info has io_pages])
2188         ])
2189 ]) # LC_HAVE_BDI_IO_PAGES
2190
2191 #
2192 # LC_IOP_GENERIC_READLINK
2193 #
2194 # Kernel version 4.10 commit dfeef68862edd7d4bafe68ef7aeb5f658ef24bb5
2195 # removed generic_readlink from individual file systems
2196 #
2197 AC_DEFUN([LC_SRC_IOP_GENERIC_READLINK], [
2198         LB2_LINUX_TEST_SRC([inode_ops_readlink], [
2199                 #include <linux/fs.h>
2200         ],[
2201                 struct inode_operations iop;
2202                 iop.readlink = generic_readlink;
2203         ])
2204 ])
2205 AC_DEFUN([LC_IOP_GENERIC_READLINK], [
2206         AC_MSG_CHECKING([if 'generic_readlink' still exist])
2207         LB2_LINUX_TEST_RESULT([inode_ops_readlink], [
2208                 AC_DEFINE(HAVE_IOP_GENERIC_READLINK, 1,
2209                         [generic_readlink has been removed])
2210         ])
2211 ]) # LC_IOP_GENERIC_READLINK
2212
2213 #
2214 # LC_HAVE_VM_FAULT_ADDRESS
2215 #
2216 # Kernel version 4.10 commit 1a29d85eb0f19b7d8271923d8917d7b4f5540b3e
2217 # removed virtual_address field. Need to use address field instead
2218 #
2219 AC_DEFUN([LC_SRC_HAVE_VM_FAULT_ADDRESS], [
2220         LB2_LINUX_TEST_SRC([vm_fault_address], [
2221                 #include <linux/mm.h>
2222         ],[
2223                 struct vm_fault vmf = { 0 };
2224                 unsigned long addr = (unsigned long)vmf.address;
2225                 (void)addr;
2226         ])
2227 ])
2228 AC_DEFUN([LC_HAVE_VM_FAULT_ADDRESS], [
2229         AC_MSG_CHECKING([if 'struct vm_fault' replaced virtual_address with address field])
2230         LB2_LINUX_TEST_RESULT([vm_fault_address], [
2231                 AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
2232                         [virtual_address has been replaced by address field])
2233         ])
2234 ]) # LC_HAVE_VM_FAULT_ADDRESS
2235
2236 #
2237 # LC_INODEOPS_ENHANCED_GETATTR
2238 #
2239 # Kernel version 4.11 commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
2240 # expanded getattr to be able to get more stat information.
2241 #
2242 AC_DEFUN([LC_SRC_INODEOPS_ENHANCED_GETATTR], [
2243         LB2_LINUX_TEST_SRC([getattr_path], [
2244                 #include <linux/fs.h>
2245         ],[
2246                 struct path path;
2247
2248                 ((struct inode_operations *)1)->getattr(&path, NULL, 0, 0);
2249         ])
2250 ])
2251 AC_DEFUN([LC_INODEOPS_ENHANCED_GETATTR], [
2252         AC_MSG_CHECKING([if 'inode_operations' getattr member can gather advance stats])
2253         LB2_LINUX_TEST_RESULT([getattr_path], [
2254                 AC_DEFINE(HAVE_INODEOPS_ENHANCED_GETATTR, 1,
2255                         [inode_operations .getattr member function can gather advance stats])
2256         ])
2257 ]) # LC_INODEOPS_ENHANCED_GETATTR
2258
2259 #
2260 # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2261 #
2262 # Kernel version 4.11 commit 11bac80004499ea59f361ef2a5516c84b6eab675
2263 # removed struct vm_area_struct as an argument for vm_operations since
2264 # in the same kernel version struct vma_area_struct was folded into
2265 # struct vm_fault.
2266 #
2267 AC_DEFUN([LC_SRC_VM_OPERATIONS_REMOVE_VMF_ARG], [
2268         LB2_LINUX_TEST_SRC([vm_operations_no_vm_area_struct], [
2269                 #include <linux/mm.h>
2270         ],[
2271                 struct vm_fault vmf;
2272
2273                 ((struct vm_operations_struct *)0)->fault(&vmf);
2274                 ((struct vm_operations_struct *)0)->page_mkwrite(&vmf);
2275         ])
2276 ])
2277 AC_DEFUN([LC_VM_OPERATIONS_REMOVE_VMF_ARG], [
2278         AC_MSG_CHECKING([if 'struct vm_operations' removed struct vm_area_struct])
2279         LB2_LINUX_TEST_RESULT([vm_operations_no_vm_area_struct], [
2280                 AC_DEFINE(HAVE_VM_OPS_USE_VM_FAULT_ONLY, 1,
2281                         ['struct vm_operations' remove struct vm_area_struct argument])
2282         ])
2283 ]) # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2284
2285 #
2286 # LC_HAVE_KEY_USAGE_REFCOUNT
2287 #
2288 # Kernel version 4.11 commit fff292914d3a2f1efd05ca71c2ba72a3c663201e
2289 # converted key.usage from atomic_t to refcount_t.
2290 #
2291 AC_DEFUN([LC_SRC_HAVE_KEY_USAGE_REFCOUNT], [
2292         LB2_LINUX_TEST_SRC([key_usage_refcount], [
2293                 #include <linux/key.h>
2294         ],[
2295                 struct key key = { };
2296
2297                 refcount_read(&key.usage);
2298         ])
2299 ])
2300 AC_DEFUN([LC_HAVE_KEY_USAGE_REFCOUNT], [
2301         AC_MSG_CHECKING([if 'key.usage' is refcount_t])
2302         LB2_LINUX_TEST_RESULT([key_usage_refcount], [
2303                 AC_DEFINE(HAVE_KEY_USAGE_REFCOUNT, 1,
2304                         [key.usage is of type refcount_t])
2305         ])
2306 ]) #LC_HAVE_KEY_USAGE_REFCOUNT
2307
2308 #
2309 # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2310 #
2311 # Kernel version 4.11 commit f437a3f477cce402dbec6537b29e9e33962c9f73
2312 # switched CRYPTO_MAX_ALG_NAME from 64 to 128.
2313 #
2314 AC_DEFUN([LC_SRC_HAVE_CRYPTO_MAX_ALG_NAME_128], [
2315         LB2_LINUX_TEST_SRC([crypto_max_alg_name], [
2316                 #include <linux/crypto.h>
2317         ],[
2318                 #if CRYPTO_MAX_ALG_NAME != 128
2319                 exit(1);
2320                 #endif
2321         ])
2322 ])
2323 AC_DEFUN([LC_HAVE_CRYPTO_MAX_ALG_NAME_128], [
2324         AC_MSG_CHECKING([if 'CRYPTO_MAX_ALG_NAME' is 128])
2325         LB2_LINUX_TEST_RESULT([crypto_max_alg_name], [
2326                 AC_DEFINE(HAVE_CRYPTO_MAX_ALG_NAME_128, 1,
2327                         ['CRYPTO_MAX_ALG_NAME' is 128])
2328         ])
2329 ]) # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2330
2331 #
2332 # Kernel version 4.12 commit 47f38c539e9a42344ff5a664942075bd4df93876
2333 # CURRENT_TIME is not 64 bit time safe so it was replaced with
2334 # current_time()
2335 #
2336 AC_DEFUN([LC_SRC_CURRENT_TIME], [
2337         LB2_LINUX_TEST_SRC([current_time], [
2338                 #include <linux/fs.h>
2339         ],[
2340                 struct iattr attr;
2341
2342                 attr.ia_atime = current_time(NULL);
2343         ])
2344 ])
2345 AC_DEFUN([LC_CURRENT_TIME], [
2346         AC_MSG_CHECKING([if CURRENT_TIME has been replaced with current_time])
2347         LB2_LINUX_TEST_RESULT([current_time], [
2348                 AC_DEFINE(HAVE_CURRENT_TIME, 1,
2349                         [current_time() has replaced CURRENT_TIME])
2350         ])
2351 ]) # LC_CURRENT_TIME
2352
2353 #
2354 # LC_HAVE_GET_INODE_USAGE
2355 #
2356 # Kernel version v4.12-rc2-43-g7a9ca53aea10
2357 #
2358 AC_DEFUN([LC_SRC_HAVE_GET_INODE_USAGE], [
2359         LB2_LINUX_TEST_SRC([get_inode_usage], [
2360                 struct inode;
2361                 #include <linux/quota.h>
2362         ],[
2363                 struct dquot_operations ops = { };
2364
2365                 ops.get_inode_usage(NULL, NULL);
2366         ])
2367 ])
2368 AC_DEFUN([LC_HAVE_GET_INODE_USAGE], [
2369         AC_MSG_CHECKING([if get_inode_usage exists])
2370         LB2_LINUX_TEST_RESULT([get_inode_usage], [
2371                 AC_DEFINE(HAVE_GET_INODE_USAGE, 1,
2372                         [get_inode_usage function exists])
2373         ])
2374 ]) # LC_HAVE_GET_INODE_USAGE
2375
2376 #
2377 # LC_SUPER_SETUP_BDI_NAME
2378 #
2379 # Kernel version 4.12 commit 9594caf216dc0fe3e318b34af0127276db661241
2380 # unified bdi handling
2381 #
2382 AC_DEFUN([LC_SRC_SUPER_SETUP_BDI_NAME], [
2383         LB2_LINUX_TEST_SRC([super_setup_bdi_name], [
2384                 #include <linux/fs.h>
2385         ],[
2386                 super_setup_bdi_name(NULL, "lustre");
2387         ])
2388 ])
2389 AC_DEFUN([LC_SUPER_SETUP_BDI_NAME], [
2390         AC_MSG_CHECKING([if 'super_setup_bdi_name' exist])
2391         LB2_LINUX_TEST_RESULT([super_setup_bdi_name], [
2392                 AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1,
2393                         ['super_setup_bdi_name' is available])
2394         ])
2395 ]) # LC_SUPER_SETUP_BDI_NAME
2396
2397 #
2398 # LC_BI_STATUS
2399 #
2400 # 4.12 replace bi_error to bi_status
2401 #
2402 AC_DEFUN([LC_SRC_BI_STATUS], [
2403         LB2_LINUX_TEST_SRC([bi_status], [
2404                 #include <linux/blk_types.h>
2405         ],[
2406                 ((struct bio *)0)->bi_status = 0;
2407         ])
2408 ])
2409 AC_DEFUN([LC_BI_STATUS], [
2410         AC_MSG_CHECKING([if 'bi_status' exist])
2411         LB2_LINUX_TEST_RESULT([bi_status], [
2412                 AC_DEFINE(HAVE_BI_STATUS, 1, ['bi_status' is available])
2413         ])
2414 ]) # LC_BI_STATUS
2415
2416 #
2417 # LC_PAGEVEC_INIT_ONE_PARAM
2418 #
2419 # 4.14 pagevec_init takes one parameter
2420 #
2421 AC_DEFUN([LC_SRC_PAGEVEC_INIT_ONE_PARAM], [
2422         LB2_LINUX_TEST_SRC([pagevec_init], [
2423                 #include <linux/pagevec.h>
2424         ],[
2425                 pagevec_init(NULL);
2426         ])
2427 ])
2428 AC_DEFUN([LC_PAGEVEC_INIT_ONE_PARAM], [
2429         AC_MSG_CHECKING([if 'pagevec_init' takes one parameter])
2430         LB2_LINUX_TEST_RESULT([pagevec_init], [
2431                 AC_DEFINE(HAVE_PAGEVEC_INIT_ONE_PARAM, 1,
2432                         ['pagevec_init' takes one parameter])
2433         ])
2434 ]) # LC_PAGEVEC_INIT_ONE_PARAM
2435
2436 #
2437 # LC_BI_BDEV
2438 #
2439 # 4.14 replaced bi_bdev to bi_disk
2440 #
2441 AC_DEFUN([LC_SRC_BI_BDEV], [
2442         LB2_LINUX_TEST_SRC([bi_bdev], [
2443                 #include <linux/bio.h>
2444         ],[
2445                 ((struct bio *)0)->bi_bdev = NULL;
2446         ])
2447 ])
2448 AC_DEFUN([LC_BI_BDEV], [
2449         AC_MSG_CHECKING([if 'bi_bdev' exist])
2450         LB2_LINUX_TEST_RESULT([bi_bdev], [
2451                 AC_DEFINE(HAVE_BI_BDEV, 1, ['bi_bdev' is available])
2452         ])
2453 ]) # LC_BI_BDEV
2454
2455 #
2456 # LC_INTERVAL_TREE_CACHED
2457 #
2458 # 4.14 f808c13fd3738948e10196496959871130612b61
2459 # switched INTERVAL_TREE_DEFINE to use cached RB_Trees.
2460 #
2461 AC_DEFUN([LC_SRC_INTERVAL_TREE_CACHED], [
2462         LB2_LINUX_TEST_SRC([itree_cached], [
2463                 #include <linux/interval_tree_generic.h>
2464                 struct foo { struct rb_node rb; int last; int a,b;};
2465                 #define START(n) ((n)->a)
2466                 #define LAST(n) ((n)->b)
2467                 struct rb_root_cached tree;
2468                 INTERVAL_TREE_DEFINE(struct foo, rb, int, last,
2469                         START, LAST, , foo);
2470         ],[
2471                 foo_insert(NULL, &tree);
2472         ],[-Werror])
2473 ])
2474 AC_DEFUN([LC_INTERVAL_TREE_CACHED], [
2475         AC_MSG_CHECKING([if interval_trees use rb_tree_cached])
2476         LB2_LINUX_TEST_RESULT([itree_cached], [
2477                 AC_DEFINE(HAVE_INTERVAL_TREE_CACHED, 1,
2478                         [interval trees use rb_tree_cached])
2479         ])
2480 ]) # LC_INTERVAL_TREE_CACHED
2481
2482 #
2483 # LC_IS_ENCRYPTED
2484 #
2485 # 4.14 introduced IS_ENCRYPTED and S_ENCRYPTED
2486 #
2487 AC_DEFUN([LC_IS_ENCRYPTED], [
2488 LB_CHECK_COMPILE([if IS_ENCRYPTED is defined],
2489 is_encrypted, [
2490         #include <linux/fs.h>
2491 ],[
2492         (void)IS_ENCRYPTED((struct inode *)1);
2493 ],[
2494         has_is_encrypted="yes"
2495 ])
2496 ]) # LC_IS_ENCRYPTED used by LC_CONFIG_CRYPTO
2497
2498 #
2499 # LC_I_PAGES
2500 #
2501 # kernel 4.17 commit b93b016313b3ba8003c3b8bb71f569af91f19fc7
2502 #
2503 AC_DEFUN([LC_SRC_I_PAGES], [
2504         LB2_LINUX_TEST_SRC([i_pages], [
2505                 #include <linux/fs.h>
2506         ],[
2507                 struct address_space mapping = {};
2508                 void *i_pages;
2509
2510                 i_pages = &mapping.i_pages;
2511         ])
2512 ])
2513 AC_DEFUN([LC_I_PAGES], [
2514         AC_MSG_CHECKING([if struct address_space has i_pages])
2515         LB2_LINUX_TEST_RESULT([i_pages], [
2516                 AC_DEFINE(HAVE_I_PAGES, 1, [struct address_space has i_pages])
2517         ])
2518 ]) # LC_I_PAGES
2519
2520 #
2521 # LC_VM_FAULT_T
2522 #
2523 # kernel 4.17 commit 3d3539018d2cbd12e5af4a132636ee7fd8d43ef0
2524 # mm: create the new vm_fault_t type
2525 #
2526 AC_DEFUN([LC_SRC_VM_FAULT_T], [
2527         LB2_LINUX_TEST_SRC([vm_fault_t], [
2528                 #include <linux/mm_types.h>
2529         ],[
2530                 vm_fault_t x = VM_FAULT_SIGBUS;
2531                 (void)x
2532         ])
2533 ])
2534 AC_DEFUN([LC_VM_FAULT_T], [
2535         AC_MSG_CHECKING([if vm_fault_t type exists])
2536         LB2_LINUX_TEST_RESULT([vm_fault_t], [
2537                 AC_DEFINE(HAVE_VM_FAULT_T, 1, [if vm_fault_t type exists])
2538         ])
2539 ]) # LC_VM_FAULT_T
2540
2541 #
2542 # LC_VM_FAULT_RETRY
2543 #
2544 # kernel 4.17 commit 3d3539018d2cbd12e5af4a132636ee7fd8d43ef0
2545 # mm: VM_FAULT_RETRY is defined in enum vm_fault_reason
2546 #
2547 AC_DEFUN([LC_SRC_VM_FAULT_RETRY], [
2548         LB2_LINUX_TEST_SRC([VM_FAULT_RETRY], [
2549                 #include <linux/mm.h>
2550         ],[
2551                 #ifndef VM_FAULT_RETRY
2552                         vm_fault_t x;
2553                         x = VM_FAULT_RETRY;
2554                 #endif
2555         ])
2556 ])
2557 AC_DEFUN([LC_VM_FAULT_RETRY], [
2558         AC_MSG_CHECKING([if VM_FAULT_RETRY is defined])
2559         LB2_LINUX_TEST_RESULT([VM_FAULT_RETRY], [
2560                 AC_DEFINE(HAVE_VM_FAULT_RETRY, 1,
2561                         [if VM_FAULT_RETRY is defined])
2562         ])
2563 ]) # LC_VM_FAULT_RETRY
2564
2565 #
2566 # LC_ALLOC_FILE_PSEUDO
2567 #
2568 # kernel 4.18-rc1 commit d93aa9d82aea80b80f225dbf9c7986df444d8106
2569 # new wrapper: alloc_file_pseudo()
2570 #
2571 AC_DEFUN([LC_SRC_ALLOC_FILE_PSEUDO], [
2572         LB2_LINUX_TEST_SRC([alloc_file_pseudo], [
2573                 #include <linux/file.h>
2574         ],[
2575                 struct file *file;
2576                 file = alloc_file_pseudo(NULL, NULL, "[test]",
2577                                          00000002, NULL);
2578         ])
2579 ])
2580 AC_DEFUN([LC_ALLOC_FILE_PSEUDO], [
2581         AC_MSG_CHECKING([if 'alloc_file_pseudo' is defined])
2582         LB2_LINUX_TEST_RESULT([alloc_file_pseudo], [
2583                 AC_DEFINE(HAVE_ALLOC_FILE_PSEUDO, 1,
2584                         ['alloc_file_pseudo' exist])
2585         ])
2586 ]) # LC_ALLOC_FILE_PSEUDO
2587
2588 #
2589 # LC_INODE_TIMESPEC64
2590 #
2591 # kernel 4.17-rc7 commit 8efd6894ff089adeeac7cb9f32125b85d963d1bc
2592 # fs: add timespec64_truncate()
2593 # kernel 4.18 commit 95582b00838837fc07e042979320caf917ce3fe6
2594 # inode timestamps switched to timespec64
2595 # kernel 4.19-rc2 commit 976516404ff3fab2a8caa8bd6f5efc1437fed0b8
2596 # y2038: remove unused time interfaces
2597 # ...
2598 #  timespec_trunc
2599 # ...
2600 # When inode times are timespec64 stop using the deprecated
2601 # time interfaces.
2602 #
2603 # kernel v5.5-rc1-6-gba70609d5ec6 ba70609d5ec664a8f36ba1c857fcd97a478adf79
2604 # fs: Delete timespec64_trunc()
2605 #
2606 AC_DEFUN([LC_SRC_INODE_TIMESPEC64], [
2607         LB2_LINUX_TEST_SRC([inode_timespec64], [
2608                 #include <linux/fs.h>
2609         ],[
2610                 struct inode *inode = NULL;
2611                 struct timespec64 ts = {0, 1};
2612
2613                 inode->i_atime = ts;
2614                 (void)inode;
2615         ],[-Werror])
2616 ])
2617 AC_DEFUN([LC_INODE_TIMESPEC64], [
2618         AC_MSG_CHECKING([if inode timestamps are struct timespec64])
2619         LB2_LINUX_TEST_RESULT([inode_timespec64], [
2620                 AC_DEFINE(HAVE_INODE_TIMESPEC64, 1,
2621                         [inode times are using timespec64])
2622         ])
2623 ]) # LC_INODE_TIMESPEC64
2624
2625 #
2626 # LC_RADIX_TREE_TAG_SET
2627 #
2628 # kernel 4.20 commit v4.19-rc5-248-g9b89a0355144
2629 # xarray: Add XArray marks - replaced radix_tree_tag_set
2630 #
2631 AC_DEFUN([LC_SRC_RADIX_TREE_TAG_SET], [
2632         LB2_LINUX_TEST_SRC([radix_tree_tag_set], [
2633                 #include <linux/fs.h>
2634                 #include <linux/radix-tree.h>
2635         ],[
2636                 radix_tree_tag_set(NULL, 0, PAGECACHE_TAG_DIRTY);
2637         ],[-Werror])
2638 ])
2639 AC_DEFUN([LC_RADIX_TREE_TAG_SET], [
2640         AC_MSG_CHECKING([if 'radix_tree_tag_set' exists])
2641         LB2_LINUX_TEST_RESULT([radix_tree_tag_set], [
2642                 AC_DEFINE(HAVE_RADIX_TREE_TAG_SET, 1,
2643                         [radix_tree_tag_set exists])
2644         ])
2645 ]) # LC_RADIX_TREE_TAG_SET
2646
2647 #
2648 # LC_UAPI_LINUX_MOUNT_H
2649 #
2650 # kernel 4.20 commit e262e32d6bde0f77fb0c95d977482fc872c51996
2651 # vfs: Suppress MS_* flag defs within the kernel ...
2652 #
2653 AC_DEFUN([LC_SRC_UAPI_LINUX_MOUNT_H], [
2654         LB2_LINUX_TEST_SRC([uapi_linux_mount], [
2655                 #include <uapi/linux/mount.h>
2656         ],[
2657                 int x = MS_RDONLY;
2658                 (void)x;
2659         ],[-Werror])
2660 ])
2661 AC_DEFUN([LC_UAPI_LINUX_MOUNT_H], [
2662         AC_MSG_CHECKING([if MS_RDONLY was moved to uapi/linux/mount.h])
2663         LB2_LINUX_TEST_RESULT([uapi_linux_mount], [
2664                 AC_DEFINE(HAVE_UAPI_LINUX_MOUNT_H, 1,
2665                         [if MS_RDONLY was moved to uapi/linux/mount.h])
2666         ])
2667 ]) # LC_UAPI_LINUX_MOUNT_H
2668
2669 #
2670 # LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2671 #
2672 # kernel 4.20 commit 1863d77f15da0addcd293a1719fa5d3ef8cde3ca
2673 # SUNRPC: Replace the cache_detail->hash_lock with a regular spinlock
2674 #
2675 # Now that the reader functions are all RCU protected, use a regular
2676 # spinlock rather than a reader/writer lock.
2677 #
2678 AC_DEFUN([LC_SRC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK], [
2679         LB2_LINUX_TEST_SRC([hash_lock_isa_spinlock_t], [
2680                 #include <linux/sunrpc/cache.h>
2681         ],[
2682                 spinlock_t *lock = &(((struct cache_detail *)0)->hash_lock);
2683                 spin_lock(lock);
2684         ],[-Werror])
2685 ])
2686 AC_DEFUN([LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK], [
2687         AC_MSG_CHECKING([if cache_detail->hash_lock is a spinlock])
2688         LB2_LINUX_TEST_RESULT([hash_lock_isa_spinlock_t], [
2689                 AC_DEFINE(HAVE_CACHE_HASH_SPINLOCK, 1,
2690                         [if cache_detail->hash_lock is a spinlock])
2691         ])
2692 ]) # LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2693
2694 #
2695 # LC_GENL_FAMILY_HAS_RESV_START_OP
2696 #
2697 # Linux v5.0-11693-g3b0f31f2b8c9
2698 #   genetlink: make policy common to family
2699 #
2700 AC_DEFUN([LC_SRC_GENL_FAMILY_HAS_RESV_START_OP], [
2701         LB2_LINUX_TEST_SRC([genl_family_has_resv_start_op], [
2702                 #include <net/genetlink.h>
2703         ],[
2704                 static const struct genl_family family = {
2705                         .resv_start_op = 42,
2706                 };
2707                 (void)family;
2708         ],[-Werror])
2709 ])
2710 AC_DEFUN([LC_GENL_FAMILY_HAS_RESV_START_OP], [
2711         AC_MSG_CHECKING([if struct genl_family has resv_start_op member])
2712         LB2_LINUX_TEST_RESULT([genl_family_has_resv_start_op], [
2713                 AC_DEFINE(GENL_FAMILY_HAS_RESV_START_OP, 1,
2714                         [struct genl_family has resv_start_op member])
2715         ])
2716 ]) # LC_GENL_FAMILY_HAS_RESV_START_OP
2717
2718 #
2719 # LC_HAVE_BVEC_ITER_ALL
2720 #
2721 # kernel 5.1 commit 6dc4f100c175dd0511ae8674786e7c9006cdfbfa
2722 # block: allow bio_for_each_segment_all() to iterate over multi-page bvec
2723 #
2724 AC_DEFUN([LC_SRC_HAVE_BVEC_ITER_ALL], [
2725         LB2_LINUX_TEST_SRC([struct_bvec_iter_all], [
2726                 #include <linux/bvec.h>
2727         ],[
2728                 struct bvec_iter_all iter;
2729                 (void)iter;
2730         ],[-Werror])
2731 ])
2732 AC_DEFUN([LC_HAVE_BVEC_ITER_ALL], [
2733         AC_MSG_CHECKING([if bvec_iter_all exists for multi-page bvec iternation])
2734         LB2_LINUX_TEST_RESULT([struct_bvec_iter_all], [
2735                 AC_DEFINE(HAVE_BVEC_ITER_ALL, 1,
2736                         [if bvec_iter_all exists for multi-page bvec iternation])
2737         ])
2738 ]) # LC_HAVE_BVEC_ITER_ALL
2739
2740 #
2741 # LC_ACCOUNT_PAGE_DIRTIED
2742 #
2743 # After 5.2 kernel page dirtied is not exported
2744 #
2745 AC_DEFUN([LC_ACCOUNT_PAGE_DIRTIED], [
2746 LB_CHECK_EXPORT([account_page_dirtied], [mm/page-writeback.c],
2747         [AC_DEFINE(HAVE_ACCOUNT_PAGE_DIRTIED_EXPORT, 1,
2748                         [account_page_dirtied is exported])])
2749 ]) # LC_ACCOUNT_PAGE_DIRTIED
2750
2751 #
2752 # LC_KEYRING_SEARCH_4ARGS
2753 #
2754 # Kernel 5.2 commit dcf49dbc8077
2755 # keys: Add a 'recurse' flag for keyring searches
2756 #
2757 AC_DEFUN([LC_SRC_KEYRING_SEARCH_4ARGS], [
2758         LB2_LINUX_TEST_SRC([keyring_search_4args], [
2759                 #include <linux/key.h>
2760         ],[
2761                 key_ref_t keyring;
2762                 keyring_search(keyring, NULL, NULL, false);
2763         ])
2764 ])
2765 AC_DEFUN([LC_KEYRING_SEARCH_4ARGS], [
2766         AC_MSG_CHECKING([if 'keyring_search' has 4 args])
2767         LB2_LINUX_TEST_RESULT([keyring_search_4args], [
2768                 AC_DEFINE(HAVE_KEYRING_SEARCH_4ARGS, 1,
2769                         [keyring_search has 4 args])
2770         ])
2771 ]) # LC_KEYRING_SEARCH_4ARGS
2772
2773 #
2774 # LC_BIO_BI_PHYS_SEGMENTS
2775 #
2776 # kernel 5.3-rc1 commit 14ccb66b3f585b2bc21e7256c96090abed5a512c
2777 # block: remove the bi_phys_segments field in struct bio
2778 #
2779 AC_DEFUN([LC_SRC_BIO_BI_PHYS_SEGMENTS], [
2780         LB2_LINUX_TEST_SRC([bye_bio_bi_phys_segments], [
2781                 #include <linux/bio.h>
2782         ],[
2783                 struct bio *bio = NULL;
2784                 bio->bi_phys_segments++;
2785         ],[-Werror])
2786 ])
2787 AC_DEFUN([LC_BIO_BI_PHYS_SEGMENTS], [
2788         AC_MSG_CHECKING([if struct bio has bi_phys_segments member])
2789         LB2_LINUX_TEST_RESULT([bye_bio_bi_phys_segments], [
2790                 AC_DEFINE(HAVE_BIO_BI_PHYS_SEGMENTS, 1,
2791                         [struct bio has bi_phys_segments member])
2792         ])
2793 ]) # LC_BIO_BI_PHYS_SEGMENTS
2794
2795 #
2796 # LC_HAVE_FLUSH_DELAYED_FPUT
2797 #
2798 # kernel commit v3.5-rc6-284-g4a9d4b024a31 adds flush_delayed_fput()
2799 # kernel commit v5.3-rc2-13-g7239a40ca8bf exports flush_delayed_fput()
2800 #
2801 AC_DEFUN([LC_HAVE_FLUSH_DELAYED_FPUT], [
2802 LB_CHECK_EXPORT([flush_delayed_fput], [fs/file_table.c],
2803         [AC_DEFINE(HAVE_FLUSH_DELAYED_FPUT, 1,
2804                         [flush_delayed_fput() is exported by the kernel])])
2805 ]) # LC_FLUSH_DELAYED_FPUT
2806
2807 #
2808 # LC_LM_COMPARE_OWNER_EXISTS
2809 #
2810 # kernel 5.3-rc3 commit f85d93385e9fe6886a751f647f6812a89bf6bee3
2811 # locks: Cleanup lm_compare_owner and lm_owner_key
2812 # removed lm_compare_owner
2813 #
2814 AC_DEFUN([LC_SRC_LM_COMPARE_OWNER_EXISTS], [
2815         LB2_LINUX_TEST_SRC([lock_manager_ops_lm_compare_owner], [
2816                 #include <linux/fs.h>
2817         ],[
2818                 struct lock_manager_operations lm_ops;
2819                 lm_ops.lm_compare_owner = NULL;
2820         ],[-Werror])
2821 ])
2822 AC_DEFUN([LC_LM_COMPARE_OWNER_EXISTS], [
2823         AC_MSG_CHECKING([if lock_manager_operations has lm_compare_owner])
2824         LB2_LINUX_TEST_RESULT([lock_manager_ops_lm_compare_owner], [
2825                 AC_DEFINE(HAVE_LM_COMPARE_OWNER, 1,
2826                         [lock_manager_operations has lm_compare_owner])
2827         ])
2828 ]) # LC_LM_COMPARE_OWNER_EXISTS
2829
2830 #
2831 # LC_FSCRYPT_SUPPORT
2832 #
2833 # 5.4 introduced fscrypt encryption policies v2
2834 #
2835 AC_DEFUN([LC_FSCRYPT_SUPPORT], [
2836 LB_CHECK_COMPILE([for fscrypt in-kernel support],
2837 fscrypt_support, [
2838         #define __FS_HAS_ENCRYPTION 0
2839         #include <linux/fscrypt.h>
2840 ],[
2841         fscrypt_ioctl_get_policy_ex(NULL, NULL);
2842 ],[
2843         has_fscrypt_support="yes"
2844 ])
2845 ]) # LC_FSCRYPT_SUPPORT used by LC_CONFIG_CRYPTO
2846
2847 #
2848 # LC_FSCRYPT_DIGESTED_NAME
2849 #
2850 # Kernel 5.5-rc4 edc440e3d27fb31e6f9663cf413fad97d714c060
2851 # improved the format of no-key names. This results in the
2852 # removal of FSCRYPT_FNAME_DIGEST and FSCRYPT_FNAME_DIGEST_SIZE.
2853 #
2854 AC_DEFUN([LC_SRC_FSCRYPT_DIGESTED_NAME], [
2855         LB2_LINUX_TEST_SRC([fscrypt_digested_name], [
2856                 #include <linux/fscrypt.h>
2857         ],[
2858                 struct fscrypt_digested_name fname;
2859
2860                 fname.hash = 0;
2861         ],[-Werror])
2862 ])
2863 AC_DEFUN([LC_FSCRYPT_DIGESTED_NAME], [
2864         AC_MSG_CHECKING([if fscrypt has 'struct fscrypt_digested_name'])
2865         LB2_LINUX_TEST_RESULT([fscrypt_digested_name], [
2866                 AC_DEFINE(HAVE_FSCRYPT_DIGESTED_NAME, 1,
2867                         ['struct fscrypt_digested_name' exists])
2868         ])
2869 ]) # LC_FSCRYPT_DIGESTED_NAME
2870
2871 #
2872 # LC_FSCRYPT_DUMMY_CONTEXT_ENABLED
2873 #
2874 # Kernel 5.7-rc7 ed318a6cc0b620440e65f48eb527dc3df7269ce4
2875 # replaces fscrypt_dummy_context_enabled() with
2876 # fscrypt_get_dummy_context(). Later kernels rename
2877 # fscrypt_get_dummy_context() to fscrypt_get_dummy_policy()
2878 # which is why we test fscrypt_dummy_context_enabled().
2879 #
2880 AC_DEFUN([LC_SRC_FSCRYPT_DUMMY_CONTEXT_ENABLED], [
2881         LB2_LINUX_TEST_SRC([fscrypt_dummy_context_enabled], [
2882                 #include <linux/fscrypt.h>
2883         ],[
2884                 fscrypt_dummy_context_enabled(NULL);
2885         ],[-Werror])
2886 ])
2887 AC_DEFUN([LC_FSCRYPT_DUMMY_CONTEXT_ENABLED], [
2888         AC_MSG_CHECKING([if fscrypt_dummy_context_enabled() exists])
2889         LB2_LINUX_TEST_RESULT([fscrypt_dummy_context_enabled], [
2890                 AC_DEFINE(HAVE_FSCRYPT_DUMMY_CONTEXT_ENABLED, 1,
2891                         [fscrypt_dummy_context_enabled() exists])
2892         ])
2893 ]) # LC_FSCRYPT_DUMMY_CONTEXT_ENABLED
2894
2895 #
2896 # LC_FSCRYPT_FNAME_ALLOC_BUFFER
2897 #
2898 # Kernel 5.9-rc4 8b10fe68985278de4926daa56ad6af701839e40a
2899 # removed the inode parameter for the fscrypt function
2900 # fscrypt_fname_alloc_buffer()
2901 #
2902 AC_DEFUN([LC_SRC_FSCRYPT_FNAME_ALLOC_BUFFER], [
2903         LB2_LINUX_TEST_SRC([fscrypt_fname_alloc_buffer], [
2904                 #include <linux/fscrypt.h>
2905         ],[
2906                 fscrypt_fname_alloc_buffer(0, NULL);
2907         ],[-Werror])
2908 ])
2909 AC_DEFUN([LC_FSCRYPT_FNAME_ALLOC_BUFFER], [
2910         AC_MSG_CHECKING([if fscrypt_fname_alloc_buffer() removed inode parameter])
2911         LB2_LINUX_TEST_RESULT([fscrypt_fname_alloc_buffer], [
2912         AC_DEFINE(HAVE_FSCRYPT_FNAME_ALLOC_BUFFER_NO_INODE, 1,
2913                 [fscrypt_fname_alloc_buffer() does not have inode parameter])
2914         ])
2915 ]) # LC_FSCRYPT_FNAME_ALLOC_BUFFER
2916
2917 #
2918 # LC_FSCRYPT_SET_CONTEXT
2919 #
2920 # Kernel 5.9-rc4 a992b20cd4ee360dbbe6f69339cb07146e4304d6
2921 # fscrypt_get_encryption_info() is not GFP_NOFS safe which
2922 # is used by fscrypt_inherit_context. Replace fscrypt_inherit_context,
2923 # with two new functions, fscrypt_prepare_new_inode() and
2924 # fscrypt_set_context()
2925 #
2926 AC_DEFUN([LC_SRC_FSCRYPT_SET_CONTEXT], [
2927         LB2_LINUX_TEST_SRC([fscrypt_set_context], [
2928                 #include <linux/fscrypt.h>
2929         ],[
2930                 fscrypt_set_context(NULL, NULL);
2931                 fscrypt_prepare_new_inode(NULL, NULL, NULL);
2932         ])
2933 ])
2934 AC_DEFUN([LC_FSCRYPT_SET_CONTEXT], [
2935         AC_MSG_CHECKING([if 'fscrypt_set_context()' exists])
2936         LB2_LINUX_TEST_RESULT([fscrypt_set_context], [
2937                 AC_DEFINE(HAVE_FSCRYPT_SET_CONTEXT, 1,
2938                         [fscrypt_set_context() does exist])
2939         ])
2940 ]) # LC_FSCRYPT_SET_CONTEXT
2941
2942 #
2943 # LC_FSCRYPT_D_REVALIDATE
2944 #
2945 # kernel 5.9-rc4 5b2a828b98ec1872799b1b4d82113c76a12d594f
2946 # exported fscrypt_d_revalidate()
2947 #
2948 AC_DEFUN([LC_FSCRYPT_D_REVALIDATE], [
2949 LB_CHECK_EXPORT([fscrypt_d_revalidate], [fs/crypto/fname.c],
2950         [AC_DEFINE(HAVE_FSCRYPT_D_REVALIDATE, 1,
2951                    [fscrypt_d_revalidate() is exported by the kernel])])
2952 ]) # LC_FSCRYPT_D_REVALIDATE
2953
2954 #
2955 # LC_FSCRYPT_NOKEY_NAME
2956 #
2957 # kernel 5.9-rc4 70fb2612aab62d47e03f82eaa7384a8d30ca175d
2958 # renamed is_ciphertext_name to is_nokey_name
2959 #
2960 AC_DEFUN([LC_SRC_FSCRYPT_NOKEY_NAME], [
2961         LB2_LINUX_TEST_SRC([fname_is_nokey_name], [
2962                 #include <linux/fscrypt.h>
2963         ],[
2964                 struct fscrypt_name fname;
2965
2966                 fname.is_nokey_name = true;
2967         ],[-Werror])
2968 ])
2969 AC_DEFUN([LC_FSCRYPT_NOKEY_NAME], [
2970         AC_MSG_CHECKING([if struct fscrypt_name has is_nokey_name field])
2971         LB2_LINUX_TEST_RESULT([fname_is_nokey_name], [
2972                 AC_DEFINE(HAVE_FSCRYPT_NOKEY_NAME, 1,
2973                         [struct fscrypt_name has is_nokey_name field])
2974         ])
2975 ]) # LC_FSCRYPT_NOKEY_NAME
2976
2977 #
2978 # LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
2979 # Kernel 5.9-rc4 c8c868abc91ff23f6f5c4444c419de7c277d77e1
2980 # changed fscrypt_set_test_dummy_encryption() take a 'const char *
2981 #
2982 AC_DEFUN([LC_SRC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG], [
2983         LB2_LINUX_TEST_SRC([fscrypt_set_test_dummy_encryption], [
2984                 #include <linux/fscrypt.h>
2985         ],[
2986                 char *arg = "arg";
2987                 fscrypt_set_test_dummy_encryption(NULL, arg, NULL);
2988         ],[-Werror])
2989 ])
2990 AC_DEFUN([LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG], [
2991         AC_MSG_CHECKING([if fscrypt_set_test_dummy_encryption() take 'const char' parameter])
2992         LB2_LINUX_TEST_RESULT([fscrypt_set_test_dummy_encryption], [
2993                 AC_DEFINE(HAVE_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG, 1,
2994                         [fscrypt_set_test_dummy_encryption() take 'const char' parameter])
2995         ])
2996 ]) # LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
2997
2998 #
2999 # LC_FSCRYPT_DUMMY_POLICY
3000 #
3001 # Kernel 5.9-rc4 ac4acb1f4b2b6b7e8d913537cccec8789903e164
3002 # move the test dummy context for fscrypt_policy which is
3003 # also used by the user land interface.
3004 #
3005 AC_DEFUN([LC_SRC_FSCRYPT_DUMMY_POLICY], [
3006         LB2_LINUX_TEST_SRC([fscrypt_free_dummy_policy], [
3007                 #include <linux/fscrypt.h>
3008         ],[
3009                 fscrypt_free_dummy_policy(NULL);
3010         ],[-Werror])
3011 ])
3012 AC_DEFUN([LC_FSCRYPT_DUMMY_POLICY], [
3013         AC_MSG_CHECKING([if fscrypt_free_dummy_policy() exists])
3014         LB2_LINUX_TEST_RESULT([fscrypt_free_dummy_policy], [
3015                 AC_DEFINE(HAVE_FSCRYPT_DUMMY_POLICY, 1,
3016                         [fscrypt_free_dummy_policy() exists])
3017         ])
3018 ]) # LC_FSCRYPT_DUMMY_POLICY
3019
3020 #
3021 # LC_HAVE_ITER_FILE_SPLICE_WRITE
3022 #
3023 # Linux commit v5.9-rc1-6-g36e2c7421f02
3024 #  fs: don't allow splice read/write without explicit ops
3025 #
3026 AC_DEFUN([LC_SRC_HAVE_ITER_FILE_SPLICE_WRITE], [
3027         LB2_LINUX_TEST_SRC([iter_file_splice_write], [
3028                 #include <linux/fs.h>
3029         ],[
3030                 (void)iter_file_splice_write(NULL, NULL, NULL, 1, 0);
3031         ],[-Werror])
3032 ])
3033 AC_DEFUN([LC_HAVE_ITER_FILE_SPLICE_WRITE], [
3034         AC_MSG_CHECKING([if iter_file_splice_write() exists])
3035         LB2_LINUX_TEST_RESULT([iter_file_splice_write], [
3036                 AC_DEFINE(HAVE_ITER_FILE_SPLICE_WRITE, 1,
3037                         ['iter_file_splice_write' exists])
3038         ])
3039 ]) # LC_HAVE_ITER_FILE_SPLICE_WRITE
3040
3041 #
3042 # LC_FSCRYPT_IS_NOKEY_NAME
3043 #
3044 # Kernel 5.10-rc4 159e1de201b6fca10bfec50405a3b53a561096a8
3045 # introduced fscrypt_is_nokey_name() inline macro. While
3046 # introduced for 5.10 kernels it was backported to earlier
3047 # Ubuntu kernels. Also it hides the change introduced due
3048 # to git commit 501e43fbe for kernel 5.9 which also was
3049 # backported to earlier Ubuntu kernels.
3050 #
3051 AC_DEFUN([LC_SRC_FSCRYPT_IS_NOKEY_NAME], [
3052         LB2_LINUX_TEST_SRC([fscrypt_is_no_key_name], [
3053                 #include <linux/fscrypt.h>
3054         ],[
3055                 fscrypt_is_nokey_name(NULL);
3056         ],[-Werror])
3057 ])
3058 AC_DEFUN([LC_FSCRYPT_IS_NOKEY_NAME], [
3059         AC_MSG_CHECKING([if fscrypt_is_no_key_name() exists])
3060         LB2_LINUX_TEST_RESULT([fscrypt_is_no_key_name], [
3061                 AC_DEFINE(HAVE_FSCRYPT_IS_NOKEY_NAME, 1,
3062                         [fscrypt_is_nokey_name() exists])
3063         ])
3064 ]) # LC_FSCRYPT_IS_NOKEY_NAME
3065
3066 #
3067 # LC_FSCRYPT_PREPARE_READDIR
3068 #
3069 # Kernel 5.10-rc4 ec0caa974cd092549ab282deb8ec7ea73b36eba0
3070 # replaced fscrypt_get_encryption_info() with
3071 # fscrypt_prepare_readdir()
3072 #
3073 AC_DEFUN([LC_SRC_FSCRYPT_PREPARE_READDIR], [
3074         LB2_LINUX_TEST_SRC([fscrypt_prepare_readdir], [
3075                 #include <linux/fscrypt.h>
3076         ],[
3077                 fscrypt_prepare_readdir(NULL);
3078         ],[-Werror])
3079 ])
3080 AC_DEFUN([LC_FSCRYPT_PREPARE_READDIR], [
3081         AC_MSG_CHECKING([if fscrypt_prepare_readdir() exists])
3082         LB2_LINUX_TEST_RESULT([fscrypt_prepare_readdir], [
3083                 AC_DEFINE(HAVE_FSCRYPT_PREPARE_READDIR, 1,
3084                         [fscrypt_prepare_readdir() exists])
3085         ])
3086 ]) # LC_FSCRYPT_PREPARE_READDIR
3087
3088 #
3089 # LC_BIO_SET_DEV
3090 #
3091 # Linux: v5.11-rc5-9-g309dca309fc3
3092 #   block: store a block_device pointer in struct bio
3093 # created bio_set_dev macro
3094 # Linux: v5.15-rc6-127-gcf6d6238cdd3
3095 #   block: turn macro helpers into inline functions
3096 # created inline function(s).
3097 #
3098 # Only provide a bio_set_dev it is is not proveded by the kernel
3099 #
3100 AC_DEFUN([LC_SRC_BIO_SET_DEV], [
3101         LB2_LINUX_TEST_SRC([bio_set_dev], [
3102                 #include <linux/bio.h>
3103         ],[
3104                 struct bio *bio = NULL;
3105                 struct block_device *bdev = NULL;
3106
3107                 bio_set_dev(bio, bdev);
3108         ],[-Werror])
3109 ])
3110 AC_DEFUN([LC_BIO_SET_DEV], [
3111         AC_MSG_CHECKING([if 'bio_set_dev' is available])
3112         LB2_LINUX_TEST_RESULT([bio_set_dev], [
3113                 AC_DEFINE(HAVE_BIO_SET_DEV, 1, ['bio_set_dev' is available])
3114         ])
3115 ]) # LC_BIO_SET_DEV
3116
3117 #
3118 # LC_HAVE_USER_NAMESPACE_ARG
3119 #
3120 # kernel 5.12 commit 549c7297717c32ee53f156cd949e055e601f67bb
3121 # fs: make helpers idmap mount aware
3122 # Extend some inode methods with an additional user namespace argument.
3123 #
3124 AC_DEFUN([LC_SRC_HAVE_USER_NAMESPACE_ARG], [
3125         LB2_LINUX_TEST_SRC([inode_ops_has_user_namespace_argument], [
3126                 #include <linux/fs.h>
3127         ],[
3128                 ((struct inode_operations *)1)->getattr((struct user_namespace *)NULL,
3129                                                         NULL, NULL, 0, 0);
3130         ],[-Werror])
3131 ])
3132 AC_DEFUN([LC_HAVE_USER_NAMESPACE_ARG], [
3133         AC_MSG_CHECKING([if 'inode_operations' members have user namespace argument])
3134         LB2_LINUX_TEST_RESULT([inode_ops_has_user_namespace_argument], [
3135                 AC_DEFINE(HAVE_USER_NAMESPACE_ARG, 1,
3136                         ['inode_operations' members have user namespace argument])
3137         ])
3138 ]) # LC_HAVE_USER_NAMESPACE_ARG
3139
3140 #
3141 # LC_HAVE_FILEATTR_GET
3142 #
3143 # kernel 5.13 4c5b479975212065ef39786e115fde42847e95a9
3144 # vfs: add fileattr ops
3145 # Add inode operations to replace FS_IOC_[SG]ETFLAGS ioctl
3146 # The type signature of ->fileattr_set is not stable for the
3147 # first few iterations, so don't commit to a particular signature
3148 # here.  Hopefully we will only want to support the final version.
3149 #
3150 AC_DEFUN([LC_HAVE_FILEATTR_GET], [
3151 tmp_flags="$EXTRA_KCFLAGS"
3152 EXTRA_KCFLAGS="-Werror"
3153 LB_CHECK_COMPILE([if 'inode_operations' has fileattr_get (and fileattr_set)],
3154 fileattr_set, [
3155         #include <linux/fs.h>
3156 ],[
3157         ((struct inode_operations *)1)->fileattr_get(NULL, NULL);
3158 ],[
3159         AC_DEFINE(HAVE_FILEATTR_GET, 1,
3160                 ['inode_operations' has fileattr_get and fileattr_set])
3161 ])
3162 EXTRA_KCFLAGS="$tmp_flags"
3163 ]) # LC_HAVE_FILEATTR_GET
3164
3165 #
3166 # LC_HAVE_GET_ACL_RCU_ARG
3167 #
3168 # kernel 5.15 commit 0cad6246621b5887d5b33fea84219d2a71f2f99a
3169 # vfs: add rcu argument to ->get_acl() callback
3170 # Add a rcu argument to the ->get_acl() callback to allow
3171 # get_cached_acl_rcu() to call the ->get_acl() method.
3172 #
3173 AC_DEFUN([LC_SRC_HAVE_GET_ACL_RCU_ARG], [
3174         LB2_LINUX_TEST_SRC([get_acl_rcu_argument], [
3175                 #include <linux/fs.h>
3176         ],[
3177                 ((struct inode_operations *)1)->get_acl((struct inode *)NULL, 0, false);
3178         ],[-Werror])
3179 ])
3180 AC_DEFUN([LC_HAVE_GET_ACL_RCU_ARG], [
3181         AC_MSG_CHECKING([if 'get_acl' has a rcu argument])
3182         LB2_LINUX_TEST_RESULT([get_acl_rcu_argument], [
3183                 AC_DEFINE(HAVE_GET_ACL_RCU_ARG, 1,
3184                         ['get_acl' has a rcu argument])
3185         ])
3186 ]) # LC_HAVE_GET_ACL_RCU_ARG
3187
3188 #
3189 # LC_HAVE_INVALIDATE_LOCK
3190 #
3191 # Kernel version v5.15-rc1 commit 730633f0b7f951726e87f912a6323641f674ae34
3192 # mm: Protect operations adding pages to page cache with invalidate_lock
3193 #
3194 AC_DEFUN([LC_HAVE_INVALIDATE_LOCK], [
3195 tmp_flags="$EXTRA_KCFLAGS"
3196 EXTRA_KCFLAGS="-Werror"
3197 LB_CHECK_COMPILE([if have address_space have invalidate_lock member],
3198 address_space_invalidate_lock, [
3199                 #include <linux/fs.h>
3200         ],[
3201                 struct address_space *mapping = NULL;
3202
3203                 filemap_invalidate_lock(mapping);
3204         ],[
3205                 AC_DEFINE(HAVE_INVALIDATE_LOCK, 1,
3206                         [address_space invalidate_lock member exists])
3207         ])
3208 EXTRA_KCFLAGS="$tmp_flags"
3209 ]) # LC_HAVE_INVALIDATE_LOCK
3210
3211 #
3212 # LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
3213 #
3214 # Linux v5.15-rc1-20-g15bf32398ad4
3215 # security: Return xattr name from security_dentry_init_security()
3216 #
3217 AC_DEFUN([LC_SRC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG], [
3218         LB2_LINUX_TEST_SRC([security_dentry_init_security_xattr_name_arg], [
3219                 #include <linux/security.h>
3220         ],[
3221                 struct dentry *dentry = NULL;
3222                 int mode = 0;
3223                 const struct qstr *name = NULL;
3224                 const char *xattr_name = NULL;
3225                 void **ctx = NULL;
3226                 u32 *ctxlen = 0;
3227                 int rc = security_dentry_init_security(dentry, mode, name, &xattr_name,
3228                                                        ctx, ctxlen);
3229                 (void)rc;
3230
3231         ],[-Werror])
3232 ])
3233 AC_DEFUN([LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG], [
3234         AC_MSG_CHECKING([if security_dentry_init_security() returns xattr name])
3235         LB2_LINUX_TEST_RESULT([security_dentry_init_security_xattr_name_arg], [
3236                 AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG, 1,
3237                         [security_dentry_init_security() returns xattr name])
3238         ])
3239 ]) # LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
3240
3241 #
3242 # LC_HAVE_KIOCB_COMPLETE_2ARGS
3243 #
3244 # kernel v5.15-rc6-145-g6b19b766e8f0
3245 # fs: get rid of the res2 iocb->ki_complete argument
3246 #
3247 AC_DEFUN([LC_SRC_HAVE_KIOCB_COMPLETE_2ARGS], [
3248         LB2_LINUX_TEST_SRC([kiocb_ki_complete_2args], [
3249                 #include <linux/fs.h>
3250
3251                 static void complete_fn(struct kiocb *iocb, long ret)
3252                 {
3253                         (void)iocb;
3254                         (void)ret;
3255                 }
3256         ],[
3257                 struct kiocb *kio = NULL;
3258
3259                 kio->ki_complete = complete_fn;
3260         ],[-Werror])
3261 ])
3262 AC_DEFUN([LC_HAVE_KIOCB_COMPLETE_2ARGS], [
3263         AC_MSG_CHECKING([if kiocb->ki_complete() has 2 arguments])
3264         LB2_LINUX_TEST_RESULT([kiocb_ki_complete_2args], [
3265                 AC_DEFINE(HAVE_KIOCB_COMPLETE_2ARGS, 1,
3266                         [kiocb->ki_complete() has 2 arguments])
3267         ])
3268 ]) # LC_HAVE_KIOCB_COMPLETE_2ARGS
3269
3270 #
3271 # LC_EXPORTS_DELETE_FROM_PAGE_CACHE
3272 #
3273 # Linux commit v5.16-rc4-44-g452e9e6992fe
3274 # filemap: Add filemap_remove_folio and __filemap_remove_folio
3275 #
3276 # Also removes the export of delete_from_page_cache
3277 #
3278 AC_DEFUN([LC_EXPORTS_DELETE_FROM_PAGE_CACHE], [
3279 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
3280         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
3281                         [delete_from_page_cache is exported])])
3282 ]) # LC_EXPORTS_DELETE_FROM_PAGE_CACHE
3283
3284 #
3285 # LC_HAVE_INVALIDATE_FOLIO
3286 #
3287 # linux commit v5.17-rc4-10-g128d1f8241d6
3288 # fs: Add invalidate_folio() aops method
3289 #
3290 AC_DEFUN([LC_SRC_HAVE_INVALIDATE_FOLIO], [
3291         LB2_LINUX_TEST_SRC([address_spaace_operaions_invalidate_folio], [
3292                 #include <linux/fs.h>
3293         ],[
3294                 struct address_space_operations *aops = NULL;
3295                 struct folio *folio = NULL;
3296                 aops->invalidate_folio(folio, 0, PAGE_SIZE);
3297
3298         ],[-Werror])
3299 ])
3300 AC_DEFUN([LC_HAVE_INVALIDATE_FOLIO], [
3301         AC_MSG_CHECKING([if have address_spaace_operaions->invalidate_folio() member])
3302         LB2_LINUX_TEST_RESULT([address_spaace_operaions_invalidate_folio], [
3303                 AC_DEFINE(HAVE_INVALIDATE_FOLIO, 1,
3304                         [address_spaace_operaions->invalidate_folio() member exists])
3305         ])
3306 ]) # LC_HAVE_INVALIDATE_FOLIO
3307
3308 #
3309 # LC_HAVE_DIRTY_FOLIO
3310 #
3311 # linux commit v5.17-rc4-38-g6f31a5a261db
3312 # fs: Add aops->dirty_folio
3313 # ... replaces ->set_page_dirty() with ->dirty_folio()
3314 #
3315 AC_DEFUN([LC_SRC_HAVE_DIRTY_FOLIO], [
3316         LB2_LINUX_TEST_SRC([address_spaace_operaions_dirty_folio], [
3317                 #include <linux/fs.h>
3318         ],[
3319                 struct address_space_operations *aops = NULL;
3320                 struct address_space *mapping = NULL;
3321                 struct folio *folio = NULL;
3322                 bool dirty = aops->dirty_folio(mapping, folio);
3323                 (void) dirty;
3324         ],[-Werror])
3325 ])
3326 AC_DEFUN([LC_HAVE_DIRTY_FOLIO], [
3327         AC_MSG_CHECKING([if have address_spaace_operaions->dirty_folio() member])
3328         LB2_LINUX_TEST_RESULT([address_spaace_operaions_dirty_folio], [
3329                 AC_DEFINE(HAVE_DIRTY_FOLIO, 1,
3330                         [address_spaace_operaions->dirty_folio() member exists])
3331         ])
3332 ]) # LC_HAVE_DIRTY_FOLIO
3333
3334 #
3335 # LC_HAVE_ALLOC_INODE_SB
3336 #
3337 # linux commit v5.17-49-g8b9f3ac5b01d
3338 #   fs: introduce alloc_inode_sb() to allocate filesystems specific inode
3339 #
3340 AC_DEFUN([LC_SRC_HAVE_ALLOC_INODE_SB], [
3341         LB2_LINUX_TEST_SRC([alloc_inode_sb], [
3342                 #include <linux/fs.h>
3343         ],[
3344                 struct super_block *sb = NULL;
3345                 struct kmem_cache *cache = NULL;
3346
3347                 (void)alloc_inode_sb(sb, cache, GFP_NOFS);
3348         ],[-Werror])
3349 ])
3350 AC_DEFUN([LC_HAVE_ALLOC_INODE_SB], [
3351         AC_MSG_CHECKING([if alloc_inode_sb() exists])
3352         LB2_LINUX_TEST_RESULT([alloc_inode_sb], [
3353                 AC_DEFINE(HAVE_ALLOC_INODE_SB, 1,
3354                         [alloc_inode_sb() exists])
3355         ])
3356 ]) # LC_HAVE_ALLOC_INODE_SB
3357
3358 #
3359 # LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
3360 #
3361 # Linux commit v5.18-rc5-221-gb7446e7cf15f
3362 #   fs: Remove aop flags parameter from grab_cache_page_write_begin()
3363 #
3364 AC_DEFUN([LC_SRC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS], [
3365         LB2_LINUX_TEST_SRC([grab_cache_page_write_begin_with_flags], [
3366                 #include <linux/pagemap.h>
3367         ],[
3368                 struct address_space *mapping = NULL;
3369                 (void)grab_cache_page_write_begin(mapping, 0, 1);
3370         ],[-Werror])
3371 ])
3372 AC_DEFUN([LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS], [
3373         AC_MSG_CHECKING([if grab_cache_page_write_begin() has flags argument])
3374         LB2_LINUX_TEST_RESULT([grab_cache_page_write_begin_with_flags], [
3375                 AC_DEFINE(HAVE_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS, 1,
3376                         [grab_cache_page_write_begin() has flags argument])
3377         ])
3378 ]) # LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
3379
3380 #
3381 # LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
3382 #
3383 # Linux commit v5.18-rc5-241-g5efe7448a142
3384 #   fs: Introduce aops->read_folio
3385 #
3386 AC_DEFUN([LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO], [
3387         LB2_LINUX_TEST_SRC([address_space_operations_read_folio], [
3388                 #include <linux/fs.h>
3389         ],[
3390                 struct address_space_operations *aops = NULL;
3391                 struct file *file = NULL;
3392                 struct folio *folio = NULL;
3393                 int err = aops->read_folio(file, folio);
3394                 (void)err;
3395         ],[-Werror])
3396 ])
3397 AC_DEFUN([LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO], [
3398         AC_MSG_CHECKING([if struct address_space_operations() has read_folio()])
3399         LB2_LINUX_TEST_RESULT([address_space_operations_read_folio], [
3400                 AC_DEFINE(HAVE_AOPS_READ_FOLIO, 1,
3401                         [struct address_space_operations() has read_folio()])
3402         ])
3403 ]) # LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
3404
3405 #
3406 # LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
3407 #
3408 # Linux commit v5.18-rc5-280-ge9b5b23e957e
3409 #   fs: Change the type of filler_t
3410 #
3411 AC_DEFUN([LC_SRC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE], [
3412         LB2_LINUX_TEST_SRC([read_cache_page_filler_with_file], [
3413                 #include <linux/pagemap.h>
3414                 static inline int _filler(struct file *file, struct folio *f)
3415                 {
3416                         return 0;
3417                 }
3418         ],[
3419                 struct address_space *mapping = NULL;
3420                 struct file *file = NULL;
3421                 struct page *page = read_cache_page(mapping, 0, _filler, file);
3422                 (void)page;
3423         ],[-Werror])
3424 ])
3425 AC_DEFUN([LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE], [
3426         AC_MSG_CHECKING([if read_cache_page() filler_t needs struct file])
3427         LB2_LINUX_TEST_RESULT([read_cache_page_filler_with_file], [
3428                 AC_DEFINE(HAVE_READ_CACHE_PAGE_WANTS_FILE, 1,
3429                         [read_cache_page() filler_t needs struct file])
3430         ])
3431 ]) # LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
3432
3433 #
3434 # LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
3435 #
3436 # Linux commit v5.18-rc5-282-gfa29000b6b26
3437 #  fs: Add aops->release_folio
3438 #
3439 AC_DEFUN([LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO], [
3440         LB2_LINUX_TEST_SRC([address_space_operations_release_folio], [
3441                 #include <linux/fs.h>
3442         ],[
3443                 struct address_space_operations *aops = NULL;
3444                 struct folio *folio = NULL;
3445                 int err = aops->release_folio(folio, GFP_KERNEL);
3446                 (void)err;
3447         ],[-Werror])
3448 ])
3449 AC_DEFUN([LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO], [
3450         AC_MSG_CHECKING([if struct address_space_operations() has release_folio()])
3451         LB2_LINUX_TEST_RESULT([address_space_operations_release_folio], [
3452                 AC_DEFINE(HAVE_AOPS_RELEASE_FOLIO, 1,
3453                         [struct address_space_operations() has release_folio()])
3454         ])
3455 ]) # LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
3456
3457 #
3458 # LC_HAVE_LSMCONTEXT_INIT
3459 #
3460 # repo: git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy
3461 # kernel linux-hwe-5.19 commit fef1deb99dad87dd700afae76b35c5b5750e33a8
3462 # LSM: Removed scaffolding function lsmcontext_init
3463 #
3464 AC_DEFUN([LC_SRC_HAVE_LSMCONTEXT_INIT], [
3465         LB2_LINUX_TEST_SRC([lsmcontext_init], [
3466                 #include <linux/security.h>
3467         ],[
3468                 struct lsmcontext ctx = {};
3469
3470                 lsmcontext_init(&ctx, "", 0, 0);
3471         ],[])
3472 ])
3473 AC_DEFUN([LC_HAVE_LSMCONTEXT_INIT], [
3474         AC_MSG_CHECKING([if lsmcontext_init is available])
3475         LB2_LINUX_TEST_RESULT([lsmcontext_init], [
3476                 AC_DEFINE(HAVE_LSMCONTEXT_INIT, 1,
3477                         [lsmcontext_init is available])
3478         ])
3479 ]) # LC_HAVE_LSMCONTEXT_INIT
3480
3481 #
3482 # LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
3483 #
3484 # repo: git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy
3485 # kernel linux-hwe-5.19 commit 57d0004bc811254916be30f94c86d9607867deb0
3486 # LSM: Use lsmcontext in security_dentry_init_security
3487 #
3488 AC_DEFUN([LC_SRC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX], [
3489         LB2_LINUX_TEST_SRC([security_dentry_init_security_with_ctx], [
3490                 #include <linux/security.h>
3491         ],[
3492                 struct dentry *dentry = NULL;
3493                 const struct qstr *name = NULL;
3494                 struct lsmcontext *ctx = NULL;
3495                 const char *xattr_name = "";
3496
3497                 (void)security_dentry_init_security(dentry, 0, name,
3498                                                     &xattr_name, ctx);
3499         ],[-Werror])
3500 ])
3501 AC_DEFUN([LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX], [
3502         AC_MSG_CHECKING([if security_dentry_init_security needs lsmcontext])
3503         LB2_LINUX_TEST_RESULT([security_dentry_init_security_with_ctx], [
3504                 AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX, 1,
3505                         [security_dentry_init_security needs lsmcontext])
3506         ])
3507 ]) # LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
3508
3509 #
3510 # LC_HAVE_NO_LLSEEK
3511 #
3512 # Linux commit v5.19-rc2-6-g868941b14441
3513 #   fs: remove no_llseek
3514 #
3515 AC_DEFUN([LC_SRC_HAVE_NO_LLSEEK], [
3516         LB2_LINUX_TEST_SRC([no_llseek], [
3517                 #include <linux/fs.h>
3518         ],[
3519                 static const struct file_operations fops = {
3520                         .llseek = &no_llseek,
3521                 };
3522                 (void)fops;
3523         ],[-Werror])
3524 ])
3525 AC_DEFUN([LC_HAVE_NO_LLSEEK], [
3526         AC_MSG_CHECKING([if no_llseek() is available])
3527         LB2_LINUX_TEST_RESULT([no_llseek], [
3528                 AC_DEFINE(HAVE_NO_LLSEEK, 1, [no_llseek() is available])
3529         ])
3530 ]) # LC_HAVE_NO_LLSEEK
3531
3532 #
3533 # LC_DQUOT_TRANSFER_WITH_USER_NS
3534 #
3535 # Linux commit v5.19-rc3-6-g71e7b535b890
3536 #  quota: port quota helpers mount ids
3537 #
3538 AC_DEFUN([LC_SRC_DQUOT_TRANSFER_WITH_USER_NS], [
3539         LB2_LINUX_TEST_SRC([dquot_transfer], [
3540                 #include <linux/quotaops.h>
3541         ],[
3542                 struct user_namespace *userns = NULL;
3543                 struct inode *inode = NULL;
3544                 struct iattr *iattr = NULL;
3545                 int err __attribute__ ((unused));
3546
3547                 err = dquot_transfer(userns, inode, iattr);
3548         ],[-Werror])
3549 ])
3550 AC_DEFUN([LC_DQUOT_TRANSFER_WITH_USER_NS], [
3551         AC_MSG_CHECKING([if dquot_transfer() has user_ns argument])
3552         LB2_LINUX_TEST_RESULT([dquot_transfer], [
3553                 AC_DEFINE(HAVE_DQUOT_TRANSFER_WITH_USER_NS, 1,
3554                         [dquot_transfer() has user_ns argument])
3555         ])
3556 ]) # LC_DQUOT_TRANSFER_WITH_USER_NS
3557
3558 #
3559 # LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
3560 #
3561 # Linux commit v5.19-rc3-392-g5490da4f06d1
3562 #  fs: Add aops->migrate_folio
3563 #
3564 AC_DEFUN([LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO], [
3565         LB2_LINUX_TEST_SRC([address_space_operations_migrate_folio], [
3566                 #include <linux/fs.h>
3567         ],[
3568                 struct address_space_operations *aops = NULL;
3569                 struct address_space *m = NULL;
3570                 struct folio *src = NULL;
3571                 struct folio *dst = NULL;
3572                 int err = aops->migrate_folio(m, dst, src, MIGRATE_ASYNC);
3573                 (void)err;
3574         ],[-Werror])
3575 ])
3576 AC_DEFUN([LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO], [
3577         AC_MSG_CHECKING([if struct address_space_operations() has migrate_folio()])
3578         LB2_LINUX_TEST_RESULT([address_space_operations_migrate_folio], [
3579                 AC_DEFINE(HAVE_AOPS_MIGRATE_FOLIO, 1,
3580                         [struct address_space_operations() has migrate_folio()])
3581         ])
3582 ]) # LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
3583
3584 #
3585 # LC_REGISTER_SHRINKER_FORMAT_NAMED
3586 #
3587 # Linux commit v5.19-rc4-52-ge33c267ab70d
3588 #   mm: shrinkers: provide shrinkers with names
3589 #
3590 AC_DEFUN([LC_SRC_REGISTER_SHRINKER_FORMAT_NAMED], [
3591         LB2_LINUX_TEST_SRC([register_shrinker_format], [
3592                 #include <linux/mm.h>
3593         ],[
3594                 if (register_shrinker(NULL, "lustre-%ps", __func__))
3595                         unregister_shrinker(NULL);
3596         ],[-Werror])
3597 ])
3598 AC_DEFUN([LC_REGISTER_SHRINKER_FORMAT_NAMED], [
3599         AC_MSG_CHECKING([if register_shrinker() returns status])
3600         LB2_LINUX_TEST_RESULT([address_space_operations_migrate_folio], [
3601                 AC_DEFINE(HAVE_REGISTER_SHRINKER_FORMAT_NAMED, 1,
3602                         [register_shrinker() returns status])
3603         ])
3604 ]) # LC_REGISTER_SHRINKER_FORMAT_NAMED
3605
3606 #
3607 # LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
3608 #
3609 # From Linux commit v5.19-rc5-17-g0c5fd887d2bb
3610 #   acl: move idmapped mount fixup into vfs_{g,s}etxattr()
3611 # Until Linux commit v6.0-rc3-6-g6344e66970c6
3612 #   xattr: constify value argument in vfs_setxattr()
3613 #
3614 AC_DEFUN([LC_SRC_HAVE_VFS_SETXATTR_NON_CONST_VALUE], [
3615         LB2_LINUX_TEST_SRC([vfs_setxattr_non_const_value_arg], [
3616                 #include <linux/xattr.h>
3617         ],[
3618                 struct dentry *de = NULL;
3619                 const char *name = "an.xattr";
3620                 const void *value = NULL;
3621                 int err = vfs_setxattr(&init_user_ns, de, name, value, 0, 0);
3622                 (void)err;
3623         ],[-Werror])
3624 ]) # LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
3625 AC_DEFUN([LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE], [
3626         AC_MSG_CHECKING([if vfs_setxattr() value argument is non-const])
3627         LB2_LINUX_TEST_RESULT([vfs_setxattr_non_const_value_arg], [
3628                 AC_DEFINE([VFS_SETXATTR_VALUE(value)],
3629                           [(value)],
3630                           [vfs_setxattr() value argument is const void *])
3631         ],[
3632                 AC_DEFINE([VFS_SETXATTR_VALUE(value)],
3633                           [((void *)(value))],
3634                           [vfs_setxattr() value argument is non-const])
3635         ])
3636 ]) # LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
3637
3638 #
3639 # LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
3640 #
3641 # Linux commit v5.19-10313-geba2d3d79829
3642 #   get rid of non-advancing variants
3643 #
3644 AC_DEFUN([LC_SRC_HAVE_IOV_ITER_GET_PAGES_ALLOC2], [
3645         LB2_LINUX_TEST_SRC([iov_iter_get_pages_alloc2], [
3646                 #include <linux/uio.h>
3647         ],[
3648                 struct iov_iter *iter = NULL;
3649                 struct page ***pages = NULL;
3650                 size_t maxsize = 1;
3651                 size_t start;
3652                 size_t result __attribute__ ((unused));
3653                 result = iov_iter_get_pages_alloc2(iter, pages, maxsize, &start);
3654         ],[-Werror])
3655 ])
3656 AC_DEFUN([LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2], [
3657         AC_MSG_CHECKING([if iov_iter_get_pages_alloc2() is available])
3658         LB2_LINUX_TEST_RESULT([iov_iter_get_pages_alloc2], [
3659                 AC_DEFINE(HAVE_IOV_ITER_GET_PAGES_ALLOC2, 1,
3660                         [iov_iter_get_pages_alloc2() is available])
3661         ])
3662 ]) # LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
3663
3664 #
3665 # LC_HAVE_GET_RANDOM_U32_AND_U64
3666 #
3667 # Linux commit v4.10-rc3-6-gc440408cf690
3668 #   random: convert get_random_int/long into get_random_u32/u64
3669 # Linux commit v6.0-11338-gde492c83cae0
3670 #   prandom: remove unused functions
3671 #
3672 AC_DEFUN([LC_SRC_HAVE_GET_RANDOM_U32_AND_U64], [
3673         LB2_LINUX_TEST_SRC([get_random_u32_and_u64], [
3674                 #include <linux/random.h>
3675         ],[
3676                 u32 rand32 = get_random_u32();
3677                 u64 rand64 = get_random_u64();
3678                 (void)rand32;
3679                 (void)rand64;
3680         ],[-Werror])
3681 ])
3682 AC_DEFUN([LC_HAVE_GET_RANDOM_U32_AND_U64], [
3683         AC_MSG_CHECKING([if get_random_u32() and get_random_u64() are available])
3684         LB2_LINUX_TEST_RESULT([get_random_u32_and_u64], [
3685                 AC_DEFINE(HAVE_GET_RANDOM_U32_AND_U64, 1,
3686                         [get_random_[u32|u64] are available])
3687         ],[
3688                 AC_DEFINE([get_random_u32()], [prandom_u32()],
3689                         [get_random_u32() is not available, use prandom_u32])
3690         ])
3691 ]) # LC_HAVE_GET_RANDOM_U32_AND_U64
3692
3693 #
3694 # LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
3695 #
3696 # Linux commit v6.0-rc1-2-g25885a35a720
3697 #  Change calling conventions for filldir_t
3698 #
3699 AC_DEFUN([LC_SRC_NFS_FILLDIR_USE_CTX_RETURN_BOOL], [
3700         LB2_LINUX_TEST_SRC([filldir_ctx_return_bool], [
3701                 #include <linux/fs.h>
3702         ],[
3703                 bool filldir(struct dir_context *ctx, const char* name,
3704                              int i, loff_t off, u64 tmp, unsigned temp)
3705                 {
3706                         return 0;
3707                 }
3708
3709                 struct dir_context ctx = {
3710                         .actor = filldir,
3711                 };
3712
3713                 ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
3714         ],[-Werror])
3715 ])
3716 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL], [
3717         AC_MSG_CHECKING([if filldir_t uses struct dir_context and returns bool])
3718         LB2_LINUX_TEST_RESULT([filldir_ctx_return_bool], [
3719                 AC_DEFINE(HAVE_FILLDIR_USE_CTX_RETURN_BOOL, 1,
3720                         [filldir_t needs struct dir_context and returns bool])
3721                 AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
3722                         [filldir_t needs struct dir_context as argument])
3723                 AC_DEFINE(FILLDIR_TYPE, bool,
3724                         [filldir_t return type is bool or int])
3725         ],[
3726                 AC_DEFINE(FILLDIR_TYPE, int,
3727                         [filldir_t return type is bool or int])
3728         ])
3729 ]) # LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
3730
3731 #
3732 # LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
3733 #
3734 # Linux commit v6.0-rc3-94-g35b471467f88
3735 #   filemap: add filemap_get_folios_contig()
3736 #
3737 AC_DEFUN([LC_SRC_HAVE_FILEMAP_GET_FOLIOS_CONTIG], [
3738         LB2_LINUX_TEST_SRC([filemap_get_folios_contig], [
3739                 #include <linux/pagemap.h>
3740         ],[
3741                 struct address_space *m = NULL;
3742                 pgoff_t start = 0;
3743                 struct folio_batch *fbatch = NULL;
3744                 (void)filemap_get_folios_contig(m, &start, ULONG_MAX, fbatch);
3745         ],[-Werror])
3746 ])
3747 AC_DEFUN([LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG], [
3748         AC_MSG_CHECKING([if filemap_get_folios_contig() is available])
3749         LB2_LINUX_TEST_RESULT([filldir_ctx_return_bool], [
3750                 AC_DEFINE(HAVE_FILEMAP_GET_FOLIOS_CONTIG, 1,
3751                         [filemap_get_folios_contig() is available])
3752         ])
3753 ]) # LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
3754
3755 #
3756 # LC_HAVE_GET_RANDOM_U32_BELOW
3757 #
3758 # Linux commit v6.1-13825-g3c202d14a9d7
3759 #   prandom: remove prandom_u32_max()
3760 #
3761 AC_DEFUN([LC_SRC_HAVE_GET_RANDOM_U32_BELOW], [
3762         LB2_LINUX_TEST_SRC([get_random_u32_below], [
3763                 #include <linux/random.h>
3764         ],[
3765                 u32 rand32 = get_random_u32_below(99);
3766                 (void)rand32;
3767         ],[-Werror])
3768 ])
3769 AC_DEFUN([LC_HAVE_GET_RANDOM_U32_BELOW], [
3770         AC_MSG_CHECKING([if get_random_u32_below()is available])
3771         LB2_LINUX_TEST_RESULT([get_random_u32_below], [
3772                 AC_DEFINE(HAVE_GET_RANDOM_U32_BELOW, 1,
3773                         [get_random_u32_below() is available])
3774         ],[
3775                 AC_DEFINE([get_random_u32_below(v)], [prandom_u32_max(v)],
3776                         [get_random_u32_below() is not available])
3777         ])
3778 ]) # LC_HAVE_GET_RANDOM_U32_BELOW
3779
3780 #
3781 # LC_HAVE_ACL_WITH_DENTRY
3782 #
3783 # Linux commit v6.1-rc1-2-g138060ba92b3
3784 #   fs: pass dentry to set acl method
3785 # Linux commit v6.1-rc1-4-g7420332a6ff4
3786 #   fs: add new get acl method
3787 #
3788 AC_DEFUN([LC_SRC_HAVE_ACL_WITH_DENTRY], [
3789         LB2_LINUX_TEST_SRC([acl_with_dentry], [
3790                 #include <linux/fs.h>
3791         ],[
3792                 struct dentry *dentry = NULL;
3793
3794                 ((struct inode_operations *)1)->get_acl(NULL, dentry, 0);
3795                 (void)dentry;
3796         ],[-Werror])
3797 ])
3798 AC_DEFUN([LC_HAVE_ACL_WITH_DENTRY], [
3799         AC_MSG_CHECKING([if 'get_acl' and 'set_acl' use dentry argument])
3800         LB2_LINUX_TEST_RESULT([acl_with_dentry], [
3801                 AC_DEFINE(HAVE_ACL_WITH_DENTRY, 1,
3802                         ['get_acl' and 'set_acl' use dentry argument])
3803         ])
3804 ]) # LC_HAVE_ACL_WITH_DENTRY
3805
3806 #
3807 # LC_HAVE_U64_CAPABILITY
3808 #
3809 # linux kernel v6.2-13111-gf122a08b197d
3810 #   capability: just use a 'u64' instead of a 'u32[2]' array
3811 #
3812 AC_DEFUN([LC_SRC_HAVE_U64_CAPABILITY], [
3813         LB2_LINUX_TEST_SRC([kernel_cap_t_has_u64_value], [
3814                 #include <linux/cred.h>
3815                 #include <linux/capability.h>
3816         ],[
3817                 kernel_cap_t cap __attribute__ ((unused));
3818                 cap.val = 0xffffffffffffffffull;
3819         ],[-Werror])
3820 ])
3821 AC_DEFUN([LC_HAVE_U64_CAPABILITY], [
3822         AC_MSG_CHECKING([if 'kernel_cap_t' has u64 val])
3823         LB2_LINUX_TEST_RESULT([kernel_cap_t_has_u64_value], [
3824                 AC_DEFINE(HAVE_U64_CAPABILITY, 1,
3825                         ['kernel_cap_t' has u64 val])
3826         ])
3827 ]) # LC_HAVE_U64_CAPABILITY
3828
3829 #
3830 # LC_HAVE_MNT_IDMAP_ARG
3831 #
3832 # linux kernel v6.2-rc1-4-gb74d24f7a74f
3833 #   fs: port ->getattr() to pass mnt_idmap
3834 # linux kernel v6.2-rc1-3-gc1632a0f1120
3835 #   fs: port ->setattr() to pass mnt_idmap
3836 #
3837 AC_DEFUN([LC_SRC_HAVE_MNT_IDMAP_ARG], [
3838         LB2_LINUX_TEST_SRC([inode_ops_getattr_has_mnt_idmap_argument], [
3839                 #include <linux/mount.h>
3840                 #include <linux/fs.h>
3841         ],[
3842                 ((struct inode_operations *)1)->getattr((struct mnt_idmap *)NULL,
3843                                                         NULL, NULL, 0, 0);
3844         ],[-Werror])
3845 ])
3846 AC_DEFUN([LC_HAVE_MNT_IDMAP_ARG], [
3847         AC_MSG_CHECKING([if 'inode_operations' members have mnt_idmap argument])
3848         LB2_LINUX_TEST_RESULT([inode_ops_getattr_has_mnt_idmap_argument], [
3849                 AC_DEFINE(HAVE_MNT_IDMAP_ARG, 1,
3850                         ['inode_operations' members have mnt_idmap argument])
3851                 AC_DEFINE(HAVE_USER_NAMESPACE_ARG, 1,
3852                         [use mnt_idmap in place of user_namespace argument])
3853                 AC_DEFINE(HAVE_DQUOT_TRANSFER_WITH_USER_NS, 1,
3854                         [use mnt_idmap with dquot_transfer])
3855         ])
3856 ]) # LC_HAVE_MNT_IDMAP_ARG
3857
3858 #
3859 # LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
3860 #
3861 # Linux commit v6.2-rc3-9-g5970e15dbcfe
3862 #   filelock: move file locking definitions to separate header file
3863 #
3864 AC_DEFUN([LC_SRC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK], [
3865         LB2_LINUX_TEST_SRC([locks_lock_file_wait_in_filelock], [
3866                 #include <linux/filelock.h>
3867         ],[
3868                 locks_lock_file_wait(NULL, NULL);
3869         ])
3870 ])
3871 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK], [
3872         AC_MSG_CHECKING([if 'locks_lock_file_wait' exists in filelock.h])
3873         LB2_LINUX_TEST_RESULT([locks_lock_file_wait_in_filelock], [
3874                 AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
3875                         [kernel has locks_lock_file_wait in filelock.h])
3876                 AC_DEFINE(HAVE_LINUX_FILELOCK_HEADER, 1,
3877                         [linux/filelock.h is present])
3878         ])
3879 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
3880
3881 #
3882 # LC_PROG_LINUX
3883 #
3884 # Lustre linux kernel checks
3885 #
3886 AC_DEFUN([LC_PROG_LINUX_SRC], [
3887         AS_IF([test "x$enable_gss" != xno], [
3888                 LC_SRC_KEY_TYPE_INSTANTIATE_2ARGS
3889                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_MD5])
3890                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_SHA1])
3891                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_SHA256])
3892                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_SHA512])
3893         ])
3894         AS_IF([test "x$enable_server" != xno], [
3895                 LC_SRC_CONFIG_QUOTA
3896                 LC_SRC_STACK_SIZE
3897         ])
3898         LC_SRC_CONFIG_FHANDLE
3899         LC_SRC_POSIX_ACL_CONFIG
3900         LC_SRC_HAVE_PROJECT_QUOTA
3901
3902         # 3.11
3903         LC_SRC_INVALIDATE_RANGE
3904         LC_SRC_HAVE_DIR_CONTEXT
3905         LC_SRC_D_COMPARE_5ARGS
3906         LC_SRC_HAVE_DCOUNT
3907         LC_SRC_PID_NS_FOR_CHILDREN
3908
3909         # 3.12
3910         LC_SRC_OLDSIZE_TRUNCATE_PAGECACHE
3911         LC_SRC_PTR_ERR_OR_ZERO_MISSING
3912         LC_SRC_HAVE_DENTRY_D_U_D_ALIAS_LIST
3913         LC_SRC_HAVE_DENTRY_D_U_D_ALIAS_HLIST
3914         LC_SRC_HAVE_DENTRY_D_CHILD
3915         LC_SRC_KIOCB_KI_LEFT
3916         LC_SRC_REGISTER_SHRINKER_RET
3917
3918         # 3.13
3919         LC_SRC_VFS_RENAME_5ARGS
3920         LC_SRC_VFS_UNLINK_3ARGS
3921         LC_SRC_HAVE_D_IS_POSITIVE
3922
3923         # 3.14
3924         LC_SRC_HAVE_BVEC_ITER
3925         LC_SRC_HAVE_TRUNCATE_IPAGES_FINAL
3926         LC_SRC_IOPS_RENAME_WITH_FLAGS
3927         LC_SRC_IOP_SET_ACL
3928
3929         # 3.15
3930         LC_SRC_VFS_RENAME_6ARGS
3931
3932         # 3.16
3933         LC_SRC_DIRECTIO_USE_ITER
3934         LC_SRC_HAVE_IOV_ITER_INIT_DIRECTION
3935         LC_SRC_HAVE_IOV_ITER_TRUNCATE
3936         LC_SRC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
3937         LC_SRC_PAGECACHE_GET_PAGE
3938
3939         # 3.17
3940         LC_SRC_HAVE_INTERVAL_BLK_INTEGRITY
3941         LC_SRC_KEY_MATCH_DATA
3942         LC_SRC_HAVE_BLK_INTEGRITY_ITER
3943
3944         # 3.18
3945         LC_SRC_NFS_FILLDIR_USE_CTX
3946         LC_SRC_PERCPU_COUNTER_INIT
3947
3948         # 3.19
3949         LC_SRC_KIOCB_HAS_NBYTES
3950         LC_SRC_HAVE_DQUOT_QC_DQBLK
3951         LC_SRC_HAVE_AIO_COMPLETE
3952         LC_SRC_HAVE_IS_ROOT_INODE
3953
3954         # 3.20
3955         LC_SRC_BACKING_DEV_INFO_REMOVAL
3956
3957         # 4.1.0
3958         LC_SRC_IOV_ITER_RW
3959         LC_SRC_HAVE___BI_CNT
3960
3961         # 4.2
3962         LC_SRC_BIO_ENDIO_USES_ONE_ARG
3963         LC_SRC_SYMLINK_OPS_USE_NAMEIDATA
3964         LC_SRC_ACCOUNT_PAGE_DIRTIED_3ARGS
3965         LC_SRC_HAVE_CRYPTO_ALLOC_SKCIPHER
3966
3967         # 4.3
3968         LC_SRC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
3969         LC_SRC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
3970         LC_SRC_HAVE_CACHE_HEAD_HLIST
3971         LC_SRC_HAVE_XATTR_HANDLER_SIMPLIFIED
3972
3973         # 4.4
3974         LC_SRC_HAVE_LOCKS_LOCK_FILE_WAIT
3975         LC_SRC_HAVE_KEY_PAYLOAD_DATA_ARRAY
3976         LC_SRC_HAVE_XATTR_HANDLER_NAME
3977         LC_SRC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL
3978         LC_SRC_HAVE_BI_OPF
3979         LC_SRC_HAVE_SUBMIT_BIO_2ARGS
3980         LC_SRC_HAVE_CLEAN_BDEV_ALIASES
3981
3982         # 4.5
3983         LC_SRC_HAVE_FILE_DENTRY
3984
3985         # 4.6
3986         LC_SRC_HAVE_INODE_LOCK
3987         LC_SRC_HAVE_IOP_GET_LINK
3988         LC_SRC_HAVE_IN_COMPAT_SYSCALL
3989         LC_SRC_HAVE_XATTR_HANDLER_INODE_PARAM
3990         LC_SRC_LOCK_PAGE_MEMCG
3991         LC_SRC_HAVE_DOWN_WRITE_KILLABLE
3992
3993         # 4.7
3994         LC_SRC_D_IN_LOOKUP
3995         LC_SRC_D_INIT
3996         LC_SRC_DIRECTIO_2ARGS
3997         LC_SRC_GENERIC_WRITE_SYNC_2ARGS
3998         LC_SRC_FOP_ITERATE_SHARED
3999
4000         # 4.8
4001         LC_SRC_HAVE_POSIX_ACL_VALID_USER_NS
4002         LC_SRC_D_COMPARE_4ARGS
4003         LC_SRC_FULL_NAME_HASH_3ARGS
4004         LC_SRC_STRUCT_POSIX_ACL_XATTR
4005         LC_SRC_IOP_XATTR
4006
4007         # 4.9
4008         LC_SRC_GROUP_INFO_GID
4009         LC_SRC_VFS_SETXATTR
4010         LC_SRC_POSIX_ACL_UPDATE_MODE
4011         LC_SRC_HAVE_BDI_IO_PAGES
4012
4013         # 4.10
4014         LC_SRC_IOP_GENERIC_READLINK
4015         LC_SRC_HAVE_VM_FAULT_ADDRESS
4016
4017         # 4.11
4018         LC_SRC_INODEOPS_ENHANCED_GETATTR
4019         LC_SRC_VM_OPERATIONS_REMOVE_VMF_ARG
4020         LC_SRC_HAVE_KEY_USAGE_REFCOUNT
4021         LC_SRC_HAVE_CRYPTO_MAX_ALG_NAME_128
4022
4023         # 4.12
4024         LC_SRC_CURRENT_TIME
4025         LC_SRC_SUPER_SETUP_BDI_NAME
4026         LC_SRC_BI_STATUS
4027
4028         # 4.13
4029         LC_SRC_HAVE_GET_INODE_USAGE
4030
4031         # 4.14
4032         LC_SRC_PAGEVEC_INIT_ONE_PARAM
4033         LC_SRC_BI_BDEV
4034         LC_SRC_INTERVAL_TREE_CACHED
4035
4036         # 4.17
4037         LC_SRC_VM_FAULT_T
4038         LC_SRC_VM_FAULT_RETRY
4039         LC_SRC_I_PAGES
4040
4041         # 4.18
4042         LC_SRC_INODE_TIMESPEC64
4043         LC_SRC_ALLOC_FILE_PSEUDO
4044
4045         # 4.20
4046         LC_SRC_RADIX_TREE_TAG_SET
4047         LC_SRC_UAPI_LINUX_MOUNT_H
4048         LC_SRC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
4049
4050         # 5.0
4051         LC_SRC_GENL_FAMILY_HAS_RESV_START_OP
4052
4053         # 5.1
4054         LC_SRC_HAVE_BVEC_ITER_ALL
4055
4056         # 5.2
4057         LC_SRC_KEYRING_SEARCH_4ARGS
4058
4059         # 5.3
4060         LC_SRC_BIO_BI_PHYS_SEGMENTS
4061         LC_SRC_LM_COMPARE_OWNER_EXISTS
4062
4063         # 5.5
4064         LC_SRC_FSCRYPT_DIGESTED_NAME
4065
4066         # 5.7
4067         LC_SRC_FSCRYPT_DUMMY_CONTEXT_ENABLED
4068
4069         # 5.9
4070         LC_SRC_FSCRYPT_FNAME_ALLOC_BUFFER
4071         LC_SRC_FSCRYPT_SET_CONTEXT
4072         LC_SRC_FSCRYPT_NOKEY_NAME
4073         LC_SRC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
4074         LC_SRC_FSCRYPT_DUMMY_POLICY
4075         LC_SRC_HAVE_ITER_FILE_SPLICE_WRITE
4076
4077         # 5.10
4078         LC_SRC_FSCRYPT_IS_NOKEY_NAME
4079         LC_SRC_FSCRYPT_PREPARE_READDIR
4080
4081         # 5.11
4082         LC_SRC_BIO_SET_DEV
4083
4084         # 5.12
4085         LC_SRC_HAVE_USER_NAMESPACE_ARG
4086
4087         # 5.15
4088         LC_SRC_HAVE_GET_ACL_RCU_ARG
4089
4090         # 5.16
4091         LC_SRC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
4092         LC_SRC_HAVE_KIOCB_COMPLETE_2ARGS
4093
4094         # 5.17
4095         LC_SRC_HAVE_INVALIDATE_FOLIO
4096         LC_SRC_HAVE_DIRTY_FOLIO
4097
4098         # 5.18
4099         LC_SRC_HAVE_ALLOC_INODE_SB
4100
4101         # 5.19
4102         LC_SRC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
4103         LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
4104         LC_SRC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
4105         LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
4106         LC_SRC_HAVE_LSMCONTEXT_INIT
4107         LC_SRC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
4108
4109         # 6.0
4110         LC_SRC_HAVE_NO_LLSEEK
4111         LC_SRC_DQUOT_TRANSFER_WITH_USER_NS
4112         LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
4113         LC_SRC_REGISTER_SHRINKER_FORMAT_NAMED
4114         LC_SRC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
4115         LC_SRC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
4116
4117         # 6.1
4118         LC_SRC_HAVE_GET_RANDOM_U32_AND_U64
4119         LC_SRC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
4120         LC_SRC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
4121
4122         # 6.2
4123         LC_SRC_HAVE_GET_RANDOM_U32_BELOW
4124         LC_SRC_HAVE_ACL_WITH_DENTRY
4125
4126         # 6.3
4127         LC_SRC_HAVE_MNT_IDMAP_ARG
4128         LC_SRC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
4129         LC_SRC_HAVE_U64_CAPABILITY
4130
4131         # kernel patch to extend integrity interface
4132         LC_SRC_BIO_INTEGRITY_PREP_FN
4133 ])
4134
4135 AC_DEFUN([LC_PROG_LINUX_RESULTS], [
4136         AS_IF([test "x$enable_gss" != xno], [
4137                 LC_KEY_TYPE_INSTANTIATE_2ARGS
4138
4139                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_MD5], [],
4140                         [AC_MSG_WARN(
4141                         [kernel MD5 support is recommended by using GSS.])])
4142                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
4143                         [AC_MSG_WARN(
4144                         [kernel SHA1 support is recommended by using GSS.])])
4145                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
4146                         [AC_MSG_WARN(
4147                         [kernel SHA256 support is recommended by using GSS.])])
4148                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
4149                         [AC_MSG_WARN(
4150                         [kernel SHA512 support is recommended by using GSS.])])
4151         ])
4152         AS_IF([test "x$enable_server" != xno], [
4153                 LC_CONFIG_QUOTA
4154                 LC_STACK_SIZE
4155         ])
4156         LC_CONFIG_FHANDLE
4157         LC_POSIX_ACL_CONFIG
4158         LC_HAVE_PROJECT_QUOTA
4159
4160         # 3.11
4161         LC_INVALIDATE_RANGE
4162         LC_HAVE_DIR_CONTEXT
4163         LC_D_COMPARE_5ARGS
4164         LC_HAVE_DCOUNT
4165         LC_HAVE_DENTRY_D_U_D_ALIAS_LIST
4166         LC_HAVE_DENTRY_D_U_D_ALIAS_HLIST
4167         LC_HAVE_DENTRY_D_CHILD
4168         LC_PID_NS_FOR_CHILDREN
4169
4170         # 3.12
4171         LC_OLDSIZE_TRUNCATE_PAGECACHE
4172         LC_PTR_ERR_OR_ZERO_MISSING
4173         LC_KIOCB_KI_LEFT
4174         LC_REGISTER_SHRINKER_RET
4175
4176         # 3.13
4177         LC_VFS_RENAME_5ARGS
4178         LC_VFS_UNLINK_3ARGS
4179         LC_HAVE_D_IS_POSITIVE
4180
4181         # 3.14
4182         LC_HAVE_BVEC_ITER
4183         LC_HAVE_TRUNCATE_IPAGES_FINAL
4184         LC_IOPS_RENAME_WITH_FLAGS
4185         LC_IOP_SET_ACL
4186
4187         # 3.15
4188         LC_VFS_RENAME_6ARGS
4189
4190         # 3.16
4191         LC_DIRECTIO_USE_ITER
4192         LC_HAVE_IOV_ITER_INIT_DIRECTION
4193         LC_HAVE_IOV_ITER_TRUNCATE
4194         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
4195         LC_PAGECACHE_GET_PAGE
4196
4197         # 3.17
4198         LC_HAVE_INTERVAL_BLK_INTEGRITY
4199         LC_KEY_MATCH_DATA
4200         LC_HAVE_BLK_INTEGRITY_ITER
4201
4202         # 3.18
4203         LC_PERCPU_COUNTER_INIT
4204         LC_NFS_FILLDIR_USE_CTX
4205
4206         # 3.19
4207         LC_KIOCB_HAS_NBYTES
4208         LC_HAVE_DQUOT_QC_DQBLK
4209         LC_HAVE_AIO_COMPLETE
4210         LC_HAVE_IS_ROOT_INODE
4211
4212         # 3.20
4213         LC_BACKING_DEV_INFO_REMOVAL
4214
4215         # 4.1.0
4216         LC_IOV_ITER_RW
4217         LC_HAVE___BI_CNT
4218
4219         # 4.2
4220         LC_BIO_ENDIO_USES_ONE_ARG
4221         LC_SYMLINK_OPS_USE_NAMEIDATA
4222         LC_ACCOUNT_PAGE_DIRTIED_3ARGS
4223         LC_HAVE_CRYPTO_ALLOC_SKCIPHER
4224
4225         # 4.3
4226         LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
4227         LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
4228         LC_HAVE_CACHE_HEAD_HLIST
4229         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
4230
4231         # 4.4
4232         LC_HAVE_LOCKS_LOCK_FILE_WAIT
4233         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
4234         LC_HAVE_XATTR_HANDLER_NAME
4235         LC_HAVE_BI_OPF
4236         LC_HAVE_SUBMIT_BIO_2ARGS
4237         LC_HAVE_CLEAN_BDEV_ALIASES
4238
4239         # 4.5
4240         LC_HAVE_FILE_DENTRY
4241
4242         # 4.5
4243         LC_HAVE_INODE_LOCK
4244         LC_HAVE_IOP_GET_LINK
4245
4246         # 4.6
4247         LC_HAVE_IN_COMPAT_SYSCALL
4248         LC_HAVE_XATTR_HANDLER_INODE_PARAM
4249         LC_LOCK_PAGE_MEMCG
4250         LC_HAVE_DOWN_WRITE_KILLABLE
4251
4252         # 4.7
4253         LC_D_IN_LOOKUP
4254         LC_D_INIT
4255         LC_DIRECTIO_2ARGS
4256         LC_GENERIC_WRITE_SYNC_2ARGS
4257         LC_FOP_ITERATE_SHARED
4258
4259         # 4.8
4260         LC_HAVE_POSIX_ACL_VALID_USER_NS
4261         LC_D_COMPARE_4ARGS
4262         LC_FULL_NAME_HASH_3ARGS
4263         LC_STRUCT_POSIX_ACL_XATTR
4264         LC_IOP_XATTR
4265
4266         # 4.9
4267         LC_GROUP_INFO_GID
4268         LC_VFS_SETXATTR
4269         LC_POSIX_ACL_UPDATE_MODE
4270         LC_HAVE_BDI_IO_PAGES
4271
4272         # 4.10
4273         LC_IOP_GENERIC_READLINK
4274         LC_HAVE_VM_FAULT_ADDRESS
4275
4276         # 4.11
4277         LC_INODEOPS_ENHANCED_GETATTR
4278         LC_VM_OPERATIONS_REMOVE_VMF_ARG
4279         LC_HAVE_KEY_USAGE_REFCOUNT
4280         LC_HAVE_CRYPTO_MAX_ALG_NAME_128
4281
4282         # 4.12
4283         LC_CURRENT_TIME
4284         LC_SUPER_SETUP_BDI_NAME
4285         LC_BI_STATUS
4286
4287         # 4.13
4288         LC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL
4289         LC_HAVE_GET_INODE_USAGE
4290
4291         # 4.14
4292         LC_PAGEVEC_INIT_ONE_PARAM
4293         LC_BI_BDEV
4294         LC_INTERVAL_TREE_CACHED
4295
4296         # 4.17
4297         LC_VM_FAULT_T
4298         LC_VM_FAULT_RETRY
4299         LC_I_PAGES
4300
4301         # 4.18
4302         LC_ALLOC_FILE_PSEUDO
4303         LC_INODE_TIMESPEC64
4304
4305         # 4.20
4306         LC_RADIX_TREE_TAG_SET
4307         LC_UAPI_LINUX_MOUNT_H
4308         LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
4309
4310         # 5.0
4311         LC_GENL_FAMILY_HAS_RESV_START_OP
4312
4313         # 5.1
4314         LC_HAVE_BVEC_ITER_ALL
4315
4316         # 5.2
4317         LC_KEYRING_SEARCH_4ARGS
4318
4319         # 5.3
4320         LC_BIO_BI_PHYS_SEGMENTS
4321         LC_HAVE_FLUSH_DELAYED_FPUT
4322         LC_LM_COMPARE_OWNER_EXISTS
4323
4324         # 5.5
4325         LC_FSCRYPT_DIGESTED_NAME
4326
4327         # 5.7
4328         LC_FSCRYPT_DUMMY_CONTEXT_ENABLED
4329
4330         # 5.9
4331         LC_HAVE_ITER_FILE_SPLICE_WRITE
4332
4333         # 5.9
4334         LC_FSCRYPT_FNAME_ALLOC_BUFFER
4335         LC_FSCRYPT_SET_CONTEXT
4336         LC_FSCRYPT_D_REVALIDATE
4337         LC_FSCRYPT_NOKEY_NAME
4338         LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
4339         LC_FSCRYPT_DUMMY_POLICY
4340
4341         # 5.10
4342         LC_FSCRYPT_IS_NOKEY_NAME
4343         LC_FSCRYPT_PREPARE_READDIR
4344
4345         # 5.11
4346         LC_BIO_SET_DEV
4347
4348         # 5.12
4349         LC_HAVE_USER_NAMESPACE_ARG
4350
4351         # 5.13
4352         LC_HAVE_FILEATTR_GET
4353
4354         # 5.15
4355         LC_HAVE_GET_ACL_RCU_ARG
4356         LC_HAVE_INVALIDATE_LOCK
4357
4358         # 5.16
4359         LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
4360         LC_HAVE_KIOCB_COMPLETE_2ARGS
4361         LC_EXPORTS_DELETE_FROM_PAGE_CACHE
4362
4363         # 5.17
4364         LC_HAVE_INVALIDATE_FOLIO
4365         LC_HAVE_DIRTY_FOLIO
4366
4367         # 5.18
4368         LC_HAVE_ALLOC_INODE_SB
4369
4370         # 5.19
4371         LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
4372         LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
4373         LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
4374         LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
4375         LC_HAVE_LSMCONTEXT_INIT
4376         LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
4377
4378         # 6.0
4379         LC_HAVE_NO_LLSEEK
4380         LC_DQUOT_TRANSFER_WITH_USER_NS
4381         LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
4382         LC_REGISTER_SHRINKER_FORMAT_NAMED
4383         LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
4384         LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
4385
4386         # 6.1
4387         LC_HAVE_GET_RANDOM_U32_AND_U64
4388         LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
4389         LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
4390
4391         # 6.2
4392         LC_HAVE_GET_RANDOM_U32_BELOW
4393         LC_HAVE_ACL_WITH_DENTRY
4394
4395         # 6.3
4396         LC_HAVE_MNT_IDMAP_ARG
4397         LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
4398         LC_HAVE_U64_CAPABILITY
4399
4400         # kernel patch to extend integrity interface
4401         LC_BIO_INTEGRITY_PREP_FN
4402 ])
4403
4404 #
4405 # LC_PROG_LINUX
4406 #
4407 # Lustre linux kernel checks
4408 #
4409 AC_DEFUN([LC_PROG_LINUX], [
4410         AC_MSG_NOTICE([Lustre kernel checks
4411 ==============================================================================])
4412
4413         LC_CONFIG_PINGER
4414         LC_CONFIG_CHECKSUM
4415         LC_CONFIG_FLOCK
4416         LC_CONFIG_HEALTH_CHECK_WRITE
4417         LC_CONFIG_LRU_RESIZE
4418         LC_CONFIG_GSS
4419
4420         LC_GLIBC_SUPPORT_FHANDLES
4421         LC_GLIBC_SUPPORT_COPY_FILE_RANGE
4422         LC_OPENSSL_SSK
4423         LC_OPENSSL_GETSEPOL
4424
4425         # 4.1.0 - Check export
4426         LC_HAVE_SYNC_READ_WRITE
4427
4428         # 4.8 - Check export
4429         LC_EXPORT_DEFAULT_FILE_SPLICE_READ
4430
4431         # 5.2 - Check export
4432         LC_ACCOUNT_PAGE_DIRTIED
4433
4434 ]) # LC_PROG_LINUX
4435
4436 #
4437 # LC_CONFIG_CLIENT
4438 #
4439 # Check whether to build the client side of Lustre
4440 #
4441 AC_DEFUN([LC_CONFIG_CLIENT], [
4442 AC_MSG_CHECKING([whether to build Lustre client support])
4443 AC_ARG_ENABLE([client],
4444         AS_HELP_STRING([--disable-client],
4445                 [disable Lustre client support]),
4446         [], [enable_client="yes"])
4447 AC_MSG_RESULT([$enable_client])
4448 ]) # LC_CONFIG_CLIENT
4449
4450 #
4451 # --enable-mpitests
4452 #
4453 AC_DEFUN([LB_CONFIG_MPITESTS], [
4454 AC_ARG_ENABLE([mpitests],
4455         AS_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
4456                        [include mpi tests]), [
4457                 enable_mpitests="yes"
4458                 case $enableval in
4459                 yes)
4460                         MPICC_WRAPPER="mpicc"
4461                         MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
4462                         ;;
4463                 no)
4464                         enable_mpitests="no"
4465                         MPI_BIN=""
4466                         ;;
4467                 *)
4468                         MPICC_WRAPPER=$enableval
4469                         MPI_BIN=$(eval echo $MPICC_WRAPPER | xargs dirname)
4470                         ;;
4471                 esac
4472         ], [
4473                 enable_mpitests="yes"
4474                 MPICC_WRAPPER="mpicc"
4475                 MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
4476         ])
4477
4478         if test "x$enable_mpitests" != "xno"; then
4479                 oldcc=$CC
4480                 CC=$MPICC_WRAPPER
4481                 AC_CACHE_CHECK([whether mpitests can be built],
4482                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
4483                         #include <mpi.h>
4484                         int main(void) {
4485                                 int flag;
4486                                 MPI_Initialized(&flag);
4487                                 return 0;
4488                         }
4489                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
4490                 ])
4491                 enable_mpitests=$lb_cv_mpi_tests
4492                 CC=$oldcc
4493         fi
4494         AC_SUBST(MPI_BIN)
4495         AC_SUBST(MPICC_WRAPPER)
4496 ]) # LB_CONFIG_MPITESTS
4497
4498 #
4499 # LC_ENABLE_QUOTA
4500 #
4501 # whether to enable quota support global control
4502 #
4503 AC_DEFUN([LC_ENABLE_QUOTA], [
4504 AC_MSG_CHECKING([whether to enable quota support global control])
4505 AC_ARG_ENABLE([quota],
4506         AS_HELP_STRING([--enable-quota],
4507                 [enable quota support]),
4508         [], [enable_quota="yes"])
4509 AS_IF([test "x$enable_quota" = xyes],
4510         [AC_MSG_RESULT([yes])],
4511         [AC_MSG_RESULT([no])])
4512 ]) # LC_ENABLE_QUOTA
4513
4514 #
4515 # LC_QUOTA
4516 #
4517 AC_DEFUN([LC_QUOTA], [
4518 #check global
4519 LC_ENABLE_QUOTA
4520 #check for utils
4521 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
4522         AC_CHECK_HEADER([sys/quota.h],
4523                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
4524                         [Define to 1 if you have <sys/quota.h>.])],
4525                 [AC_MSG_ERROR([did not find <sys/quota.h> on your system])])
4526 ])
4527 ]) # LC_QUOTA
4528
4529 #
4530 # LC_OSD_ADDON
4531 #
4532 # configure support for optional OSD implementation
4533 #
4534 AC_DEFUN([LC_OSD_ADDON], [
4535 AC_MSG_CHECKING([whether to use OSD addon])
4536 AC_ARG_WITH([osd],
4537         AS_HELP_STRING([--with-osd=path],
4538                 [set path to optional osd]),
4539         [
4540         case "$with_osd" in
4541         no)
4542                 ENABLEOSDADDON=0
4543                 ;;
4544         *)
4545                 OSDADDON="$with_osd"
4546                 ENABLEOSDADDON=1
4547                 ;;
4548         esac
4549         ], [
4550                 ENABLEOSDADDON=0
4551         ])
4552 AS_IF([test $ENABLEOSDADDON -eq 0], [
4553         AC_MSG_RESULT([no])
4554         OSDADDON=""
4555 ], [
4556         OSDMODNAME=$(basename $OSDADDON)
4557         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
4558                 AC_MSG_RESULT([cannot link])
4559                 OSDADDON=""
4560         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
4561                 AC_MSG_RESULT([$OSDMODNAME])
4562                 OSDADDON="obj-m += $OSDMODNAME/"
4563         ], [
4564                 AC_MSG_RESULT([cannot link])
4565                 OSDADDON=""
4566         ])
4567 ])
4568 AC_SUBST(OSDADDON)
4569 ]) # LC_OSD_ADDON
4570
4571 #
4572 # LC_CONFIG_CRYPTO
4573 #
4574 # Check whether to enable Lustre client crypto
4575 #
4576 AC_DEFUN([LC_CONFIG_CRYPTO], [
4577 AC_MSG_CHECKING([whether to enable Lustre client crypto])
4578 AC_ARG_ENABLE([crypto],
4579         AS_HELP_STRING([--enable-crypto=yes|no|in-kernel],
4580                 [enable Lustre client crypto (default is yes), use 'in-kernel' to force use of in-kernel fscrypt instead of embedded llcrypt]),
4581         [], [enable_crypto="auto"])
4582 AS_IF([test "x$enable_crypto" != xno -a "x$enable_dist" = xno], [
4583         AC_MSG_RESULT(
4584         )
4585         LC_IS_ENCRYPTED
4586         LC_FSCRYPT_SUPPORT])
4587 AS_IF([test "x$enable_crypto" = xin-kernel], [
4588         AS_IF([test "x$has_fscrypt_support" = xyes], [
4589               AC_DEFINE(HAVE_LUSTRE_CRYPTO, 1, [Enable Lustre client crypto via in-kernel fscrypt])], [
4590               AC_MSG_ERROR([Lustre client crypto cannot be enabled via in-kernel fscrypt.])
4591               enable_crypto=no])],
4592         [AS_IF([test "x$has_is_encrypted" = xyes], [
4593               AC_DEFINE(HAVE_LUSTRE_CRYPTO, 1, [Enable Lustre client crypto via embedded llcrypt])
4594               AC_DEFINE(CONFIG_LL_ENCRYPTION, 1, [embedded llcrypt])
4595               AC_DEFINE(HAVE_FSCRYPT_DUMMY_CONTEXT_ENABLED, 1, [embedded llcrypt uses llcrypt_dummy_context_enabled()])
4596               enable_crypto="embedded-llcrypt"
4597               enable_llcrypt=yes], [
4598               AS_IF([test "x$enable_crypto" = xyes],
4599                     [AC_MSG_ERROR([Lustre client crypto cannot be enabled because of lack of encryption support in your kernel.])])
4600               AS_IF([test "x$enable_crypto" != xno -a "x$enable_dist" = xno],
4601                     [AC_MSG_WARN(Lustre client crypto cannot be enabled because of lack of encryption support in your kernel.)])
4602               enable_crypto=no])])
4603 AS_IF([test "x$enable_dist" != xno], [
4604         enable_crypto=yes
4605         enable_llcrypt=yes])
4606 AC_MSG_RESULT([$enable_crypto])
4607 ]) # LC_CONFIG_CRYPTO
4608
4609 #
4610 # LC_CONFIGURE
4611 #
4612 # other configure checks
4613 #
4614 AC_DEFUN([LC_CONFIGURE], [
4615 AC_MSG_NOTICE([Lustre core checks
4616 ==============================================================================])
4617
4618 # maximum MDS thread count
4619 LC_MDS_MAX_THREADS
4620
4621 # lustre/utils/gss/gss_util.c
4622 # lustre/utils/llog_reader.c
4623 # lustre/utils/create_iam.c
4624 # lustre/utils/libiam.c
4625 AC_CHECK_HEADERS([netdb.h endian.h])
4626 AC_CHECK_FUNCS([gethostbyname])
4627
4628 # lustre/utils/llverfs.c lustre/utils/libmount_utils_ldiskfs.c
4629 AC_CHECK_HEADERS([ext2fs/ext2fs.h], [], [
4630         AS_IF([test "x$enable_utils" = xyes -a "x$enable_ldiskfs" = xyes], [
4631                 AC_MSG_ERROR([
4632 ext2fs.h not found. Please install e2fsprogs development package.
4633                 ])
4634         ])
4635 ])
4636
4637 # lustre/tests/statx_test.c
4638 AC_CHECK_FUNCS([statx])
4639
4640 # lustre/utils/lfs.c
4641 AS_IF([test "$enable_dist" = "no"], [
4642                 AC_CHECK_LIB([z], [crc32], [
4643                                  AC_CHECK_HEADER([zlib.h], [], [
4644                                                  AC_MSG_ERROR([zlib.h not found.])])
4645                                  ], [
4646                                  AC_MSG_ERROR([
4647                 zlib library not found. Please install zlib development package.])
4648                 ])
4649 ])
4650
4651 SELINUX=""
4652
4653 AC_CHECK_LIB([selinux], [is_selinux_enabled],
4654         [AC_CHECK_HEADERS([selinux/selinux.h],
4655                         [SELINUX="-lselinux"
4656                         AC_DEFINE([HAVE_SELINUX], 1,
4657                                 [support for selinux ])],
4658                         [AC_MSG_WARN([
4659
4660 No libselinux-devel package found, unable to build selinux enabled tools
4661 ])
4662 ])],
4663         [AC_MSG_WARN([
4664
4665 No selinux package found, unable to build selinux enabled tools
4666 ])
4667 ])
4668 AC_SUBST(SELINUX)
4669
4670 AC_CHECK_LIB([keyutils], [add_key])
4671
4672 # Super safe df
4673 AC_MSG_CHECKING([whether to report minimum OST free space])
4674 AC_ARG_ENABLE([mindf],
4675         AS_HELP_STRING([--enable-mindf],
4676                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
4677         [], [enable_mindf="no"])
4678 AC_MSG_RESULT([$enable_mindf])
4679 AS_IF([test "$enable_mindf" = "yes"], [
4680         AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
4681         AC_SUBST(ENABLE_MINDF, yes)
4682 ], [
4683         AC_SUBST(ENABLE_MINDF, no)
4684 ])
4685
4686 AC_MSG_CHECKING([whether to randomly failing memory alloc])
4687 AC_ARG_ENABLE([fail_alloc],
4688         AS_HELP_STRING([--disable-fail-alloc],
4689                 [disable randomly alloc failure]),
4690         [], [enable_fail_alloc="yes"])
4691 AC_MSG_RESULT([$enable_fail_alloc])
4692 AS_IF([test "x$enable_fail_alloc" != xno], [
4693         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
4694         AC_SUBST(ENABLE_FAIL_ALLOC, yes)
4695 ], [
4696         AC_SUBST(ENABLE_FAIL_ALLOC, no)
4697 ])
4698
4699 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
4700 AC_ARG_ENABLE([invariants],
4701         AS_HELP_STRING([--enable-invariants],
4702                 [enable invariant checking (cpu intensive)]),
4703         [], [enable_invariants="no"])
4704 AC_MSG_RESULT([$enable_invariants])
4705 AS_IF([test "x$enable_invariants" = xyes], [
4706         AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
4707                   [enable invariant checking])
4708         AC_SUBST(ENABLE_INVARIANTS, yes)
4709 ], [
4710         AC_SUBST(ENABLE_INVARIANTS, no)
4711 ])
4712
4713 AC_MSG_CHECKING([whether to track references with lu_ref])
4714 AC_ARG_ENABLE([lu_ref],
4715         AS_HELP_STRING([--enable-lu_ref],
4716                 [enable lu_ref reference tracking code]),
4717         [], [enable_lu_ref="no"])
4718 AC_MSG_RESULT([$enable_lu_ref])
4719 AS_IF([test "x$enable_lu_ref" = xyes], [
4720         AC_DEFINE([CONFIG_LUSTRE_DEBUG_LU_REF], 1,
4721                   [enable lu_ref reference tracking code])
4722         AC_SUBST(ENABLE_LU_REF, yes)
4723 ], [
4724         AC_SUBST(ENABLE_LU_REF, no)
4725 ])
4726
4727 AC_MSG_CHECKING([whether to enable page state tracking])
4728 AC_ARG_ENABLE([pgstate-track],
4729         AS_HELP_STRING([--enable-pgstate-track],
4730                 [enable page state tracking]),
4731         [], [enable_pgstat_track="no"])
4732 AC_MSG_RESULT([$enable_pgstat_track])
4733 AS_IF([test "x$enable_pgstat_track" = xyes], [
4734         AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
4735                   [enable page state tracking code])
4736         AC_SUBST(ENABLE_PGSTAT_TRACK, yes)
4737 ], [
4738         AC_SUBST(ENABLE_PGSTAT_TRACK, no)
4739 ])
4740
4741 PKG_PROG_PKG_CONFIG
4742 AC_MSG_CHECKING([systemd unit file directory])
4743 AC_ARG_WITH([systemdsystemunitdir],
4744         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
4745                 [Directory for systemd service files])],
4746         [], [with_systemdsystemunitdir=auto])
4747 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
4748         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
4749         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
4750                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
4751                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
4752                 with_systemdsystemunitdir=no],
4753         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
4754 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
4755         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
4756 AC_MSG_RESULT([$with_systemdsystemunitdir])
4757
4758 AC_MSG_CHECKING([bash-completion directory])
4759 AC_ARG_WITH([bash-completion-dir],
4760         AS_HELP_STRING([--with-bash-completion-dir[=PATH]],
4761                 [Install the bash auto-completion script in this directory.]),
4762         [],
4763         [with_bash_completion_dir=yes])
4764 AS_IF([test "x$with_bash_completion_dir" = "xyes"], [
4765         BASH_COMPLETION_DIR="`pkg-config --variable=completionsdir bash-completion`"
4766         AS_IF([test "x$BASH_COMPLETION_DIR" = "x"], [
4767                 [BASH_COMPLETION_DIR="/usr/share/bash-completion/completions"]
4768         ])
4769 ], [
4770         BASH_COMPLETION_DIR="$with_bash_completion_dir"
4771 ])
4772 AC_SUBST([BASH_COMPLETION_DIR])
4773 AC_MSG_RESULT([$BASH_COMPLETION_DIR])
4774 ]) # LC_CONFIGURE
4775
4776 #
4777 # LC_CONDITIONALS
4778 #
4779 # AM_CONDITIONALS for lustre
4780 #
4781 AC_DEFUN([LC_CONDITIONALS], [
4782 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
4783 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
4784 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
4785 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
4786 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
4787 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
4788 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
4789 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
4790 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
4791 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
4792 AM_CONDITIONAL(ENABLE_BASH_COMPLETION, test "x$with_bash_completion_dir" != "xno")
4793 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
4794 AM_CONDITIONAL(SELINUX, test "$SELINUX" = "-lselinux")
4795 AM_CONDITIONAL(GETSEPOL, test x$enable_getsepol = xyes)
4796 AM_CONDITIONAL(LLCRYPT, test x$enable_llcrypt = xyes)
4797 AM_CONDITIONAL(LIBAIO, test x$enable_libaio = xyes)
4798 ]) # LC_CONDITIONALS
4799
4800 #
4801 # LC_CONFIG_FILES
4802 #
4803 # files that should be generated with AC_OUTPUT
4804 #
4805 AC_DEFUN([LC_CONFIG_FILES],
4806 [AC_CONFIG_FILES([
4807 lustre/Makefile
4808 lustre/autoMakefile
4809 lustre/autoconf/Makefile
4810 lustre/conf/Makefile
4811 lustre/conf/resource/Makefile
4812 lustre/doc/Makefile
4813 lustre/include/Makefile
4814 lustre/include/lustre/Makefile
4815 lustre/include/uapi/linux/lustre/Makefile
4816 lustre/kernel_patches/targets/5.14-rhel9.2.target
4817 lustre/kernel_patches/targets/5.14-rhel9.1.target
4818 lustre/kernel_patches/targets/5.14-rhel9.0.target
4819 lustre/kernel_patches/targets/4.18-rhel8.8.target
4820 lustre/kernel_patches/targets/4.18-rhel8.7.target
4821 lustre/kernel_patches/targets/4.18-rhel8.6.target
4822 lustre/kernel_patches/targets/4.18-rhel8.5.target
4823 lustre/kernel_patches/targets/4.18-rhel8.4.target
4824 lustre/kernel_patches/targets/4.18-rhel8.3.target
4825 lustre/kernel_patches/targets/4.18-rhel8.2.target
4826 lustre/kernel_patches/targets/4.18-rhel8.1.target
4827 lustre/kernel_patches/targets/4.18-rhel8.target
4828 lustre/kernel_patches/targets/3.10-rhel7.9.target
4829 lustre/kernel_patches/targets/3.10-rhel7.8.target
4830 lustre/kernel_patches/targets/3.10-rhel7.7.target
4831 lustre/kernel_patches/targets/3.10-rhel7.6.target
4832 lustre/kernel_patches/targets/3.10-rhel7.5.target
4833 lustre/kernel_patches/targets/4.14-rhel7.5.target
4834 lustre/kernel_patches/targets/4.14-rhel7.6.target
4835 lustre/kernel_patches/targets/4.12-sles12sp4.target
4836 lustre/kernel_patches/targets/4.12-sles12sp5.target
4837 lustre/kernel_patches/targets/4.12-sles15sp1.target
4838 lustre/kernel_patches/targets/5.3-sles15sp2.target
4839 lustre/kernel_patches/targets/5.3-sles15sp3.target
4840 lustre/kernel_patches/targets/5.14-sles15sp4.target
4841 lustre/kernel_patches/targets/3.x-fc18.target
4842 lustre/kernel_patches/targets/5.10-oe2203.target
4843 lustre/kernel_patches/targets/5.10-oe2203sp1.target
4844 lustre/ldlm/Makefile
4845 lustre/ldlm/autoMakefile
4846 lustre/ec/autoMakefile
4847 lustre/ec/Makefile
4848 lustre/fid/Makefile
4849 lustre/fid/autoMakefile
4850 lustre/llite/Makefile
4851 lustre/llite/autoMakefile
4852 lustre/lov/Makefile
4853 lustre/lov/autoMakefile
4854 lustre/mdc/Makefile
4855 lustre/mdc/autoMakefile
4856 lustre/lmv/Makefile
4857 lustre/lmv/autoMakefile
4858 lustre/lfsck/Makefile
4859 lustre/lfsck/autoMakefile
4860 lustre/mdt/Makefile
4861 lustre/mdt/autoMakefile
4862 lustre/mdd/Makefile
4863 lustre/mdd/autoMakefile
4864 lustre/fld/Makefile
4865 lustre/fld/autoMakefile
4866 lustre/obdclass/Makefile
4867 lustre/obdclass/autoMakefile
4868 lustre/obdecho/Makefile
4869 lustre/obdecho/autoMakefile
4870 lustre/ofd/Makefile
4871 lustre/ofd/autoMakefile
4872 lustre/osc/Makefile
4873 lustre/osc/autoMakefile
4874 lustre/ost/Makefile
4875 lustre/ost/autoMakefile
4876 lustre/osd-ldiskfs/Makefile
4877 lustre/osd-ldiskfs/autoMakefile
4878 lustre/osd-zfs/Makefile
4879 lustre/osd-zfs/autoMakefile
4880 lustre/mgc/Makefile
4881 lustre/mgc/autoMakefile
4882 lustre/mgs/Makefile
4883 lustre/mgs/autoMakefile
4884 lustre/target/Makefile
4885 lustre/target/autoMakefile
4886 lustre/ptlrpc/Makefile
4887 lustre/ptlrpc/autoMakefile
4888 lustre/ptlrpc/gss/Makefile
4889 lustre/ptlrpc/gss/autoMakefile
4890 lustre/quota/Makefile
4891 lustre/quota/autoMakefile
4892 lustre/scripts/Makefile
4893 lustre/scripts/systemd/Makefile
4894 lustre/tests/Makefile
4895 lustre/tests/mpi/Makefile
4896 lustre/tests/iabf/Makefile
4897 lustre/tests/lutf/Makefile
4898 lustre/tests/lutf/src/Makefile
4899 lustre/tests/kernel/Makefile
4900 lustre/tests/kernel/autoMakefile
4901 lustre/utils/Makefile
4902 lustre/utils/gss/Makefile
4903 lustre/osp/Makefile
4904 lustre/osp/autoMakefile
4905 lustre/lod/Makefile
4906 lustre/lod/autoMakefile
4907 ])
4908 ]) # LC_CONFIG_FILES