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_HAVE_KTHREAD_USE_MM
2897 #
2898 # kernel 5.8 commit f5678e7f2ac31c270334b936352f0ef2fe7dd2b3
2899 # kernel: better document the use_mm/unuse_mm API contract
2900 #
2901 AC_DEFUN([LC_SRC_HAVE_KTHREAD_USE_MM], [
2902         LB2_LINUX_TEST_SRC([kthread_use_mm], [
2903                 #include <linux/kthread.h>
2904         ],[
2905                 kthread_use_mm(NULL);
2906         ])
2907 ])
2908 AC_DEFUN([LC_HAVE_KTHREAD_USE_MM], [
2909         AC_MSG_CHECKING([if have kthread_use_mm])
2910         LB2_LINUX_TEST_RESULT([kthread_use_mm], [
2911                 AC_DEFINE(HAVE_KTHREAD_USE_MM, 1, ['kthread_use_mm' exists])
2912         ])
2913 ]) # LC_HAVE_KTHREAD_USE_MM
2914
2915 #
2916 # LC_FSCRYPT_FNAME_ALLOC_BUFFER
2917 #
2918 # Kernel 5.9-rc4 8b10fe68985278de4926daa56ad6af701839e40a
2919 # removed the inode parameter for the fscrypt function
2920 # fscrypt_fname_alloc_buffer()
2921 #
2922 AC_DEFUN([LC_SRC_FSCRYPT_FNAME_ALLOC_BUFFER], [
2923         LB2_LINUX_TEST_SRC([fscrypt_fname_alloc_buffer], [
2924                 #include <linux/fscrypt.h>
2925         ],[
2926                 fscrypt_fname_alloc_buffer(0, NULL);
2927         ],[-Werror])
2928 ])
2929 AC_DEFUN([LC_FSCRYPT_FNAME_ALLOC_BUFFER], [
2930         AC_MSG_CHECKING([if fscrypt_fname_alloc_buffer() removed inode parameter])
2931         LB2_LINUX_TEST_RESULT([fscrypt_fname_alloc_buffer], [
2932         AC_DEFINE(HAVE_FSCRYPT_FNAME_ALLOC_BUFFER_NO_INODE, 1,
2933                 [fscrypt_fname_alloc_buffer() does not have inode parameter])
2934         ])
2935 ]) # LC_FSCRYPT_FNAME_ALLOC_BUFFER
2936
2937 #
2938 # LC_FSCRYPT_SET_CONTEXT
2939 #
2940 # Kernel 5.9-rc4 a992b20cd4ee360dbbe6f69339cb07146e4304d6
2941 # fscrypt_get_encryption_info() is not GFP_NOFS safe which
2942 # is used by fscrypt_inherit_context. Replace fscrypt_inherit_context,
2943 # with two new functions, fscrypt_prepare_new_inode() and
2944 # fscrypt_set_context()
2945 #
2946 AC_DEFUN([LC_SRC_FSCRYPT_SET_CONTEXT], [
2947         LB2_LINUX_TEST_SRC([fscrypt_set_context], [
2948                 #include <linux/fscrypt.h>
2949         ],[
2950                 fscrypt_set_context(NULL, NULL);
2951                 fscrypt_prepare_new_inode(NULL, NULL, NULL);
2952         ])
2953 ])
2954 AC_DEFUN([LC_FSCRYPT_SET_CONTEXT], [
2955         AC_MSG_CHECKING([if 'fscrypt_set_context()' exists])
2956         LB2_LINUX_TEST_RESULT([fscrypt_set_context], [
2957                 AC_DEFINE(HAVE_FSCRYPT_SET_CONTEXT, 1,
2958                         [fscrypt_set_context() does exist])
2959         ])
2960 ]) # LC_FSCRYPT_SET_CONTEXT
2961
2962 #
2963 # LC_FSCRYPT_D_REVALIDATE
2964 #
2965 # kernel 5.9-rc4 5b2a828b98ec1872799b1b4d82113c76a12d594f
2966 # exported fscrypt_d_revalidate()
2967 #
2968 AC_DEFUN([LC_FSCRYPT_D_REVALIDATE], [
2969 LB_CHECK_EXPORT([fscrypt_d_revalidate], [fs/crypto/fname.c],
2970         [AC_DEFINE(HAVE_FSCRYPT_D_REVALIDATE, 1,
2971                    [fscrypt_d_revalidate() is exported by the kernel])])
2972 ]) # LC_FSCRYPT_D_REVALIDATE
2973
2974 #
2975 # LC_FSCRYPT_NOKEY_NAME
2976 #
2977 # kernel 5.9-rc4 70fb2612aab62d47e03f82eaa7384a8d30ca175d
2978 # renamed is_ciphertext_name to is_nokey_name
2979 #
2980 AC_DEFUN([LC_SRC_FSCRYPT_NOKEY_NAME], [
2981         LB2_LINUX_TEST_SRC([fname_is_nokey_name], [
2982                 #include <linux/fscrypt.h>
2983         ],[
2984                 struct fscrypt_name fname;
2985
2986                 fname.is_nokey_name = true;
2987         ],[-Werror])
2988 ])
2989 AC_DEFUN([LC_FSCRYPT_NOKEY_NAME], [
2990         AC_MSG_CHECKING([if struct fscrypt_name has is_nokey_name field])
2991         LB2_LINUX_TEST_RESULT([fname_is_nokey_name], [
2992                 AC_DEFINE(HAVE_FSCRYPT_NOKEY_NAME, 1,
2993                         [struct fscrypt_name has is_nokey_name field])
2994         ])
2995 ]) # LC_FSCRYPT_NOKEY_NAME
2996
2997 #
2998 # LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
2999 # Kernel 5.9-rc4 c8c868abc91ff23f6f5c4444c419de7c277d77e1
3000 # changed fscrypt_set_test_dummy_encryption() take a 'const char *
3001 #
3002 AC_DEFUN([LC_SRC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG], [
3003         LB2_LINUX_TEST_SRC([fscrypt_set_test_dummy_encryption], [
3004                 #include <linux/fscrypt.h>
3005         ],[
3006                 char *arg = "arg";
3007                 fscrypt_set_test_dummy_encryption(NULL, arg, NULL);
3008         ],[-Werror])
3009 ])
3010 AC_DEFUN([LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG], [
3011         AC_MSG_CHECKING([if fscrypt_set_test_dummy_encryption() take 'const char' parameter])
3012         LB2_LINUX_TEST_RESULT([fscrypt_set_test_dummy_encryption], [
3013                 AC_DEFINE(HAVE_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG, 1,
3014                         [fscrypt_set_test_dummy_encryption() take 'const char' parameter])
3015         ])
3016 ]) # LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
3017
3018 #
3019 # LC_FSCRYPT_DUMMY_POLICY
3020 #
3021 # Kernel 5.9-rc4 ac4acb1f4b2b6b7e8d913537cccec8789903e164
3022 # move the test dummy context for fscrypt_policy which is
3023 # also used by the user land interface.
3024 #
3025 AC_DEFUN([LC_SRC_FSCRYPT_DUMMY_POLICY], [
3026         LB2_LINUX_TEST_SRC([fscrypt_free_dummy_policy], [
3027                 #include <linux/fscrypt.h>
3028         ],[
3029                 fscrypt_free_dummy_policy(NULL);
3030         ],[-Werror])
3031 ])
3032 AC_DEFUN([LC_FSCRYPT_DUMMY_POLICY], [
3033         AC_MSG_CHECKING([if fscrypt_free_dummy_policy() exists])
3034         LB2_LINUX_TEST_RESULT([fscrypt_free_dummy_policy], [
3035                 AC_DEFINE(HAVE_FSCRYPT_DUMMY_POLICY, 1,
3036                         [fscrypt_free_dummy_policy() exists])
3037         ])
3038 ]) # LC_FSCRYPT_DUMMY_POLICY
3039
3040 #
3041 # LC_HAVE_ITER_FILE_SPLICE_WRITE
3042 #
3043 # Linux commit v5.9-rc1-6-g36e2c7421f02
3044 #  fs: don't allow splice read/write without explicit ops
3045 #
3046 AC_DEFUN([LC_SRC_HAVE_ITER_FILE_SPLICE_WRITE], [
3047         LB2_LINUX_TEST_SRC([iter_file_splice_write], [
3048                 #include <linux/fs.h>
3049         ],[
3050                 (void)iter_file_splice_write(NULL, NULL, NULL, 1, 0);
3051         ],[-Werror])
3052 ])
3053 AC_DEFUN([LC_HAVE_ITER_FILE_SPLICE_WRITE], [
3054         AC_MSG_CHECKING([if iter_file_splice_write() exists])
3055         LB2_LINUX_TEST_RESULT([iter_file_splice_write], [
3056                 AC_DEFINE(HAVE_ITER_FILE_SPLICE_WRITE, 1,
3057                         ['iter_file_splice_write' exists])
3058         ])
3059 ]) # LC_HAVE_ITER_FILE_SPLICE_WRITE
3060
3061 #
3062 # LC_HAVE_BDI_DEBUG_STATS
3063 #
3064 # Linux kernel v5.10 commit 2d146b924ec3c0873f06308d149684dc1105d9a3
3065 # backing-dev: no need to check return value of debugfs_create functions
3066 # backing_dev_info.debug_stats was remove.
3067 #
3068 AC_DEFUN([LC_SRC_HAVE_BDI_DEBUG_STATS], [
3069         LB2_LINUX_TEST_SRC([bdi_has_debug_stats], [
3070                 #include <linux/backing-dev-defs.h>
3071         ],[
3072                 struct backing_dev_info info;
3073
3074                 info.debug_stats = NULL;
3075         ],[-Werror])
3076 ])
3077 AC_DEFUN([LC_HAVE_BDI_DEBUG_STATS], [
3078         AC_MSG_CHECKING([if 'struct backing_dev_info' has 'debug_stats' field])
3079         LB2_LINUX_TEST_RESULT([bdi_has_debug_stats], [
3080                 AC_DEFINE(HAVE_BDI_DEBUG_STATS, 1,
3081                         [backing_dev_info has debug_stats])
3082         ])
3083 ]) # LC_HAVE_BDI_DEBUG_STATS
3084
3085 #
3086 # LC_FSCRYPT_IS_NOKEY_NAME
3087 #
3088 # Kernel 5.10-rc4 159e1de201b6fca10bfec50405a3b53a561096a8
3089 # introduced fscrypt_is_nokey_name() inline macro. While
3090 # introduced for 5.10 kernels it was backported to earlier
3091 # Ubuntu kernels. Also it hides the change introduced due
3092 # to git commit 501e43fbe for kernel 5.9 which also was
3093 # backported to earlier Ubuntu kernels.
3094 #
3095 AC_DEFUN([LC_SRC_FSCRYPT_IS_NOKEY_NAME], [
3096         LB2_LINUX_TEST_SRC([fscrypt_is_no_key_name], [
3097                 #include <linux/fscrypt.h>
3098         ],[
3099                 fscrypt_is_nokey_name(NULL);
3100         ],[-Werror])
3101 ])
3102 AC_DEFUN([LC_FSCRYPT_IS_NOKEY_NAME], [
3103         AC_MSG_CHECKING([if fscrypt_is_no_key_name() exists])
3104         LB2_LINUX_TEST_RESULT([fscrypt_is_no_key_name], [
3105                 AC_DEFINE(HAVE_FSCRYPT_IS_NOKEY_NAME, 1,
3106                         [fscrypt_is_nokey_name() exists])
3107         ])
3108 ]) # LC_FSCRYPT_IS_NOKEY_NAME
3109
3110 #
3111 # LC_FSCRYPT_PREPARE_READDIR
3112 #
3113 # Kernel 5.10-rc4 ec0caa974cd092549ab282deb8ec7ea73b36eba0
3114 # replaced fscrypt_get_encryption_info() with
3115 # fscrypt_prepare_readdir()
3116 #
3117 AC_DEFUN([LC_SRC_FSCRYPT_PREPARE_READDIR], [
3118         LB2_LINUX_TEST_SRC([fscrypt_prepare_readdir], [
3119                 #include <linux/fscrypt.h>
3120         ],[
3121                 fscrypt_prepare_readdir(NULL);
3122         ],[-Werror])
3123 ])
3124 AC_DEFUN([LC_FSCRYPT_PREPARE_READDIR], [
3125         AC_MSG_CHECKING([if fscrypt_prepare_readdir() exists])
3126         LB2_LINUX_TEST_RESULT([fscrypt_prepare_readdir], [
3127                 AC_DEFINE(HAVE_FSCRYPT_PREPARE_READDIR, 1,
3128                         [fscrypt_prepare_readdir() exists])
3129         ])
3130 ]) # LC_FSCRYPT_PREPARE_READDIR
3131
3132 #
3133 # LC_BIO_SET_DEV
3134 #
3135 # Linux: v5.11-rc5-9-g309dca309fc3
3136 #   block: store a block_device pointer in struct bio
3137 # created bio_set_dev macro
3138 # Linux: v5.15-rc6-127-gcf6d6238cdd3
3139 #   block: turn macro helpers into inline functions
3140 # created inline function(s).
3141 #
3142 # Only provide a bio_set_dev it is is not proveded by the kernel
3143 #
3144 AC_DEFUN([LC_SRC_BIO_SET_DEV], [
3145         LB2_LINUX_TEST_SRC([bio_set_dev], [
3146                 #include <linux/bio.h>
3147         ],[
3148                 struct bio *bio = NULL;
3149                 struct block_device *bdev = NULL;
3150
3151                 bio_set_dev(bio, bdev);
3152         ],[-Werror])
3153 ])
3154 AC_DEFUN([LC_BIO_SET_DEV], [
3155         AC_MSG_CHECKING([if 'bio_set_dev' is available])
3156         LB2_LINUX_TEST_RESULT([bio_set_dev], [
3157                 AC_DEFINE(HAVE_BIO_SET_DEV, 1, ['bio_set_dev' is available])
3158         ])
3159 ]) # LC_BIO_SET_DEV
3160
3161 #
3162 # LC_HAVE_USER_NAMESPACE_ARG
3163 #
3164 # kernel 5.12 commit 549c7297717c32ee53f156cd949e055e601f67bb
3165 # fs: make helpers idmap mount aware
3166 # Extend some inode methods with an additional user namespace argument.
3167 #
3168 AC_DEFUN([LC_SRC_HAVE_USER_NAMESPACE_ARG], [
3169         LB2_LINUX_TEST_SRC([inode_ops_has_user_namespace_argument], [
3170                 #include <linux/fs.h>
3171         ],[
3172                 ((struct inode_operations *)1)->getattr((struct user_namespace *)NULL,
3173                                                         NULL, NULL, 0, 0);
3174         ],[-Werror])
3175 ])
3176 AC_DEFUN([LC_HAVE_USER_NAMESPACE_ARG], [
3177         AC_MSG_CHECKING([if 'inode_operations' members have user namespace argument])
3178         LB2_LINUX_TEST_RESULT([inode_ops_has_user_namespace_argument], [
3179                 AC_DEFINE(HAVE_USER_NAMESPACE_ARG, 1,
3180                         ['inode_operations' members have user namespace argument])
3181         ])
3182 ]) # LC_HAVE_USER_NAMESPACE_ARG
3183
3184 #
3185 # LC_HAVE_FILEATTR_GET
3186 #
3187 # kernel 5.13 4c5b479975212065ef39786e115fde42847e95a9
3188 # vfs: add fileattr ops
3189 # Add inode operations to replace FS_IOC_[SG]ETFLAGS ioctl
3190 # The type signature of ->fileattr_set is not stable for the
3191 # first few iterations, so don't commit to a particular signature
3192 # here.  Hopefully we will only want to support the final version.
3193 #
3194 AC_DEFUN([LC_HAVE_FILEATTR_GET], [
3195 tmp_flags="$EXTRA_KCFLAGS"
3196 EXTRA_KCFLAGS="-Werror"
3197 LB_CHECK_COMPILE([if 'inode_operations' has fileattr_get (and fileattr_set)],
3198 fileattr_set, [
3199         #include <linux/fs.h>
3200 ],[
3201         ((struct inode_operations *)1)->fileattr_get(NULL, NULL);
3202 ],[
3203         AC_DEFINE(HAVE_FILEATTR_GET, 1,
3204                 ['inode_operations' has fileattr_get and fileattr_set])
3205 ])
3206 EXTRA_KCFLAGS="$tmp_flags"
3207 ]) # LC_HAVE_FILEATTR_GET
3208
3209 # LC_HAVE_COPY_PAGE_FROM_ITER_ATOMIC
3210 #
3211 # Kernel 5.13 commit f0b65f39ac505e8f1dcdaa165aa7b8c0bd6fd454
3212 # iov_iter: replace iov_iter_copy_from_user_atomic() with iterator-advancing variant
3213 #
3214 AC_DEFUN([LC_SRC_HAVE_COPY_PAGE_FROM_ITER_ATOMIC], [
3215         LB2_LINUX_TEST_SRC([copy_page_from_iter_atomic], [
3216                 #include <linux/uio.h>
3217         ],[
3218                 copy_page_from_iter_atomic(NULL, 0, 0, NULL);
3219         ])
3220 ])
3221 AC_DEFUN([LC_HAVE_COPY_PAGE_FROM_ITER_ATOMIC], [
3222         AC_MSG_CHECKING([if have copy_page_from_iter_atomic])
3223         LB2_LINUX_TEST_RESULT([copy_page_from_iter_atomic], [
3224                 AC_DEFINE(HAVE_COPY_PAGE_FROM_ITER_ATOMIC, 1,
3225                         ['copy_page_from_iter_atomic' exists])
3226         ])
3227 ]) # LC_HAVE_COPY_PAGE_FROM_ITER_ATOMIC
3228
3229 #
3230 # LC_HAVE_GET_ACL_RCU_ARG
3231 #
3232 # kernel 5.15 commit 0cad6246621b5887d5b33fea84219d2a71f2f99a
3233 # vfs: add rcu argument to ->get_acl() callback
3234 # Add a rcu argument to the ->get_acl() callback to allow
3235 # get_cached_acl_rcu() to call the ->get_acl() method.
3236 #
3237 AC_DEFUN([LC_SRC_HAVE_GET_ACL_RCU_ARG], [
3238         LB2_LINUX_TEST_SRC([get_acl_rcu_argument], [
3239                 #include <linux/fs.h>
3240         ],[
3241                 ((struct inode_operations *)1)->get_acl((struct inode *)NULL, 0, false);
3242         ],[-Werror])
3243 ])
3244 AC_DEFUN([LC_HAVE_GET_ACL_RCU_ARG], [
3245         AC_MSG_CHECKING([if 'get_acl' has a rcu argument])
3246         LB2_LINUX_TEST_RESULT([get_acl_rcu_argument], [
3247                 AC_DEFINE(HAVE_GET_ACL_RCU_ARG, 1,
3248                         ['get_acl' has a rcu argument])
3249         ])
3250 ]) # LC_HAVE_GET_ACL_RCU_ARG
3251
3252 # LC_HAVE_FAULT_IN_IOV_ITER_READABLE
3253 #
3254 # Kernel 5.15 commit a6294593e8a1290091d0b078d5d33da5e0cd3dfe
3255 # iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable
3256 #
3257 AC_DEFUN([LC_SRC_HAVE_FAULT_IN_IOV_ITER_READABLE], [
3258         LB2_LINUX_TEST_SRC([fault_in_iov_iter_readable], [
3259                 #include <linux/uio.h>
3260         ],[
3261                 fault_in_iov_iter_readable(NULL, 0);
3262         ])
3263 ])
3264 AC_DEFUN([LC_HAVE_FAULT_IN_IOV_ITER_READABLE], [
3265         AC_MSG_CHECKING([if have fault_in_iov_iter_readable])
3266         LB2_LINUX_TEST_RESULT([fault_in_iov_iter_readable], [
3267                 AC_DEFINE(HAVE_FAULT_IN_IOV_ITER_READABLE, 1,
3268                         ['fault_in_iov_iter_readable' exists])
3269         ])
3270 ]) # LC_HAVE_FAULT_IN_IOV_ITER_READABLE
3271
3272 #
3273 # LC_HAVE_INVALIDATE_LOCK
3274 #
3275 # Kernel version v5.15-rc1 commit 730633f0b7f951726e87f912a6323641f674ae34
3276 # mm: Protect operations adding pages to page cache with invalidate_lock
3277 #
3278 AC_DEFUN([LC_HAVE_INVALIDATE_LOCK], [
3279 tmp_flags="$EXTRA_KCFLAGS"
3280 EXTRA_KCFLAGS="-Werror"
3281 LB_CHECK_COMPILE([if have address_space have invalidate_lock member],
3282 address_space_invalidate_lock, [
3283                 #include <linux/fs.h>
3284         ],[
3285                 struct address_space *mapping = NULL;
3286
3287                 filemap_invalidate_lock(mapping);
3288         ],[
3289                 AC_DEFINE(HAVE_INVALIDATE_LOCK, 1,
3290                         [address_space invalidate_lock member exists])
3291         ])
3292 EXTRA_KCFLAGS="$tmp_flags"
3293 ]) # LC_HAVE_INVALIDATE_LOCK
3294
3295 #
3296 # LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
3297 #
3298 # Linux v5.15-rc1-20-g15bf32398ad4
3299 # security: Return xattr name from security_dentry_init_security()
3300 #
3301 AC_DEFUN([LC_SRC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG], [
3302         LB2_LINUX_TEST_SRC([security_dentry_init_security_xattr_name_arg], [
3303                 #include <linux/security.h>
3304         ],[
3305                 struct dentry *dentry = NULL;
3306                 int mode = 0;
3307                 const struct qstr *name = NULL;
3308                 const char *xattr_name = NULL;
3309                 void **ctx = NULL;
3310                 u32 *ctxlen = 0;
3311                 int rc = security_dentry_init_security(dentry, mode, name, &xattr_name,
3312                                                        ctx, ctxlen);
3313                 (void)rc;
3314
3315         ],[-Werror])
3316 ])
3317 AC_DEFUN([LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG], [
3318         AC_MSG_CHECKING([if security_dentry_init_security() returns xattr name])
3319         LB2_LINUX_TEST_RESULT([security_dentry_init_security_xattr_name_arg], [
3320                 AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG, 1,
3321                         [security_dentry_init_security() returns xattr name])
3322         ])
3323 ]) # LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
3324
3325 #
3326 # LC_HAVE_KIOCB_COMPLETE_2ARGS
3327 #
3328 # kernel v5.15-rc6-145-g6b19b766e8f0
3329 # fs: get rid of the res2 iocb->ki_complete argument
3330 #
3331 AC_DEFUN([LC_SRC_HAVE_KIOCB_COMPLETE_2ARGS], [
3332         LB2_LINUX_TEST_SRC([kiocb_ki_complete_2args], [
3333                 #include <linux/fs.h>
3334
3335                 static void complete_fn(struct kiocb *iocb, long ret)
3336                 {
3337                         (void)iocb;
3338                         (void)ret;
3339                 }
3340         ],[
3341                 struct kiocb *kio = NULL;
3342
3343                 kio->ki_complete = complete_fn;
3344         ],[-Werror])
3345 ])
3346 AC_DEFUN([LC_HAVE_KIOCB_COMPLETE_2ARGS], [
3347         AC_MSG_CHECKING([if kiocb->ki_complete() has 2 arguments])
3348         LB2_LINUX_TEST_RESULT([kiocb_ki_complete_2args], [
3349                 AC_DEFINE(HAVE_KIOCB_COMPLETE_2ARGS, 1,
3350                         [kiocb->ki_complete() has 2 arguments])
3351         ])
3352 ]) # LC_HAVE_KIOCB_COMPLETE_2ARGS
3353
3354 #
3355 # LC_EXPORTS_DELETE_FROM_PAGE_CACHE
3356 #
3357 # Linux commit v5.16-rc4-44-g452e9e6992fe
3358 # filemap: Add filemap_remove_folio and __filemap_remove_folio
3359 #
3360 # Also removes the export of delete_from_page_cache
3361 #
3362 AC_DEFUN([LC_EXPORTS_DELETE_FROM_PAGE_CACHE], [
3363 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
3364         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
3365                         [delete_from_page_cache is exported])])
3366 ]) # LC_EXPORTS_DELETE_FROM_PAGE_CACHE
3367
3368
3369 #
3370 # LC_HAVE_WB_STAT_MOD
3371 #
3372 # Kernel 5.16-rc1 bd3488e7b4d61780eb3dfaca1cc6f4026bcffd48
3373 # mm/writeback: Rename __add_wb_stat() to wb_stat_mod()
3374 #
3375 AC_DEFUN([LC_HAVE_WB_STAT_MOD], [
3376 tmp_flags="$EXTRA_KCFLAGS"
3377 EXTRA_KCFLAGS="-Werror"
3378 LB_CHECK_COMPILE([if wb_stat_mod() exists],
3379 wb_stat_mode, [
3380         #include <linux/backing-dev.h>
3381 ],[
3382         wb_stat_mod(NULL, WB_WRITEBACK, 1);
3383 ],[
3384         AC_DEFINE(HAVE_WB_STAT_MOD, 1,
3385                 [wb_stat_mod() exists])
3386 ])
3387 EXTRA_KCFLAGS="$tmp_flags"
3388 ]) # LC_HAVE_WB_STAT_MOD
3389
3390 #
3391 # LC_HAVE_INVALIDATE_FOLIO
3392 #
3393 # linux commit v5.17-rc4-10-g128d1f8241d6
3394 # fs: Add invalidate_folio() aops method
3395 #
3396 AC_DEFUN([LC_SRC_HAVE_INVALIDATE_FOLIO], [
3397         LB2_LINUX_TEST_SRC([address_spaace_operaions_invalidate_folio], [
3398                 #include <linux/fs.h>
3399         ],[
3400                 struct address_space_operations *aops = NULL;
3401                 struct folio *folio = NULL;
3402                 aops->invalidate_folio(folio, 0, PAGE_SIZE);
3403
3404         ],[-Werror])
3405 ])
3406 AC_DEFUN([LC_HAVE_INVALIDATE_FOLIO], [
3407         AC_MSG_CHECKING([if have address_spaace_operaions->invalidate_folio() member])
3408         LB2_LINUX_TEST_RESULT([address_spaace_operaions_invalidate_folio], [
3409                 AC_DEFINE(HAVE_INVALIDATE_FOLIO, 1,
3410                         [address_spaace_operaions->invalidate_folio() member exists])
3411         ])
3412 ]) # LC_HAVE_INVALIDATE_FOLIO
3413
3414 #
3415 # LC_HAVE_DIRTY_FOLIO
3416 #
3417 # linux commit v5.17-rc4-38-g6f31a5a261db
3418 # fs: Add aops->dirty_folio
3419 # ... replaces ->set_page_dirty() with ->dirty_folio()
3420 #
3421 AC_DEFUN([LC_SRC_HAVE_DIRTY_FOLIO], [
3422         LB2_LINUX_TEST_SRC([address_spaace_operaions_dirty_folio], [
3423                 #include <linux/fs.h>
3424         ],[
3425                 struct address_space_operations *aops = NULL;
3426                 struct address_space *mapping = NULL;
3427                 struct folio *folio = NULL;
3428                 bool dirty = aops->dirty_folio(mapping, folio);
3429                 (void) dirty;
3430         ],[-Werror])
3431 ])
3432 AC_DEFUN([LC_HAVE_DIRTY_FOLIO], [
3433         AC_MSG_CHECKING([if have address_spaace_operaions->dirty_folio() member])
3434         LB2_LINUX_TEST_RESULT([address_spaace_operaions_dirty_folio], [
3435                 AC_DEFINE(HAVE_DIRTY_FOLIO, 1,
3436                         [address_spaace_operaions->dirty_folio() member exists])
3437         ])
3438 ]) # LC_HAVE_DIRTY_FOLIO
3439
3440 #
3441 # LC_HAVE_ALLOC_INODE_SB
3442 #
3443 # linux commit v5.17-49-g8b9f3ac5b01d
3444 #   fs: introduce alloc_inode_sb() to allocate filesystems specific inode
3445 #
3446 AC_DEFUN([LC_SRC_HAVE_ALLOC_INODE_SB], [
3447         LB2_LINUX_TEST_SRC([alloc_inode_sb], [
3448                 #include <linux/fs.h>
3449         ],[
3450                 struct super_block *sb = NULL;
3451                 struct kmem_cache *cache = NULL;
3452
3453                 (void)alloc_inode_sb(sb, cache, GFP_NOFS);
3454         ],[-Werror])
3455 ])
3456 AC_DEFUN([LC_HAVE_ALLOC_INODE_SB], [
3457         AC_MSG_CHECKING([if alloc_inode_sb() exists])
3458         LB2_LINUX_TEST_RESULT([alloc_inode_sb], [
3459                 AC_DEFINE(HAVE_ALLOC_INODE_SB, 1,
3460                         [alloc_inode_sb() exists])
3461         ])
3462 ]) # LC_HAVE_ALLOC_INODE_SB
3463
3464 #
3465 # LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
3466 #
3467 # Linux commit v5.18-rc5-221-gb7446e7cf15f
3468 #   fs: Remove aop flags parameter from grab_cache_page_write_begin()
3469 #
3470 AC_DEFUN([LC_SRC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS], [
3471         LB2_LINUX_TEST_SRC([grab_cache_page_write_begin_with_flags], [
3472                 #include <linux/pagemap.h>
3473         ],[
3474                 struct address_space *mapping = NULL;
3475                 (void)grab_cache_page_write_begin(mapping, 0, 1);
3476         ],[-Werror])
3477 ])
3478 AC_DEFUN([LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS], [
3479         AC_MSG_CHECKING([if grab_cache_page_write_begin() has flags argument])
3480         LB2_LINUX_TEST_RESULT([grab_cache_page_write_begin_with_flags], [
3481                 AC_DEFINE(HAVE_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS, 1,
3482                         [grab_cache_page_write_begin() has flags argument])
3483         ])
3484 ]) # LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
3485
3486 #
3487 # LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
3488 #
3489 # Linux commit v5.18-rc5-241-g5efe7448a142
3490 #   fs: Introduce aops->read_folio
3491 #
3492 AC_DEFUN([LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO], [
3493         LB2_LINUX_TEST_SRC([address_space_operations_read_folio], [
3494                 #include <linux/fs.h>
3495         ],[
3496                 struct address_space_operations *aops = NULL;
3497                 struct file *file = NULL;
3498                 struct folio *folio = NULL;
3499                 int err = aops->read_folio(file, folio);
3500                 (void)err;
3501         ],[-Werror])
3502 ])
3503 AC_DEFUN([LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO], [
3504         AC_MSG_CHECKING([if struct address_space_operations() has read_folio()])
3505         LB2_LINUX_TEST_RESULT([address_space_operations_read_folio], [
3506                 AC_DEFINE(HAVE_AOPS_READ_FOLIO, 1,
3507                         [struct address_space_operations() has read_folio()])
3508         ])
3509 ]) # LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
3510
3511 #
3512 # LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
3513 #
3514 # Linux commit v5.18-rc5-280-ge9b5b23e957e
3515 #   fs: Change the type of filler_t
3516 #
3517 AC_DEFUN([LC_SRC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE], [
3518         LB2_LINUX_TEST_SRC([read_cache_page_filler_with_file], [
3519                 #include <linux/pagemap.h>
3520                 static inline int _filler(struct file *file, struct folio *f)
3521                 {
3522                         return 0;
3523                 }
3524         ],[
3525                 struct address_space *mapping = NULL;
3526                 struct file *file = NULL;
3527                 struct page *page = read_cache_page(mapping, 0, _filler, file);
3528                 (void)page;
3529         ],[-Werror])
3530 ])
3531 AC_DEFUN([LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE], [
3532         AC_MSG_CHECKING([if read_cache_page() filler_t needs struct file])
3533         LB2_LINUX_TEST_RESULT([read_cache_page_filler_with_file], [
3534                 AC_DEFINE(HAVE_READ_CACHE_PAGE_WANTS_FILE, 1,
3535                         [read_cache_page() filler_t needs struct file])
3536         ])
3537 ]) # LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
3538
3539 #
3540 # LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
3541 #
3542 # Linux commit v5.18-rc5-282-gfa29000b6b26
3543 #  fs: Add aops->release_folio
3544 #
3545 AC_DEFUN([LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO], [
3546         LB2_LINUX_TEST_SRC([address_space_operations_release_folio], [
3547                 #include <linux/fs.h>
3548         ],[
3549                 struct address_space_operations *aops = NULL;
3550                 struct folio *folio = NULL;
3551                 int err = aops->release_folio(folio, GFP_KERNEL);
3552                 (void)err;
3553         ],[-Werror])
3554 ])
3555 AC_DEFUN([LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO], [
3556         AC_MSG_CHECKING([if struct address_space_operations() has release_folio()])
3557         LB2_LINUX_TEST_RESULT([address_space_operations_release_folio], [
3558                 AC_DEFINE(HAVE_AOPS_RELEASE_FOLIO, 1,
3559                         [struct address_space_operations() has release_folio()])
3560         ])
3561 ]) # LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
3562
3563 #
3564 # LC_HAVE_LSMCONTEXT_INIT
3565 #
3566 # repo: git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy
3567 # kernel linux-hwe-5.19 commit fef1deb99dad87dd700afae76b35c5b5750e33a8
3568 # LSM: Removed scaffolding function lsmcontext_init
3569 #
3570 AC_DEFUN([LC_SRC_HAVE_LSMCONTEXT_INIT], [
3571         LB2_LINUX_TEST_SRC([lsmcontext_init], [
3572                 #include <linux/security.h>
3573         ],[
3574                 struct lsmcontext ctx = {};
3575
3576                 lsmcontext_init(&ctx, "", 0, 0);
3577         ],[])
3578 ])
3579 AC_DEFUN([LC_HAVE_LSMCONTEXT_INIT], [
3580         AC_MSG_CHECKING([if lsmcontext_init is available])
3581         LB2_LINUX_TEST_RESULT([lsmcontext_init], [
3582                 AC_DEFINE(HAVE_LSMCONTEXT_INIT, 1,
3583                         [lsmcontext_init is available])
3584         ])
3585 ]) # LC_HAVE_LSMCONTEXT_INIT
3586
3587 #
3588 # LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
3589 #
3590 # repo: git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy
3591 # kernel linux-hwe-5.19 commit 57d0004bc811254916be30f94c86d9607867deb0
3592 # LSM: Use lsmcontext in security_dentry_init_security
3593 #
3594 AC_DEFUN([LC_SRC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX], [
3595         LB2_LINUX_TEST_SRC([security_dentry_init_security_with_ctx], [
3596                 #include <linux/security.h>
3597         ],[
3598                 struct dentry *dentry = NULL;
3599                 const struct qstr *name = NULL;
3600                 struct lsmcontext *ctx = NULL;
3601                 const char *xattr_name = "";
3602
3603                 (void)security_dentry_init_security(dentry, 0, name,
3604                                                     &xattr_name, ctx);
3605         ],[-Werror])
3606 ])
3607 AC_DEFUN([LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX], [
3608         AC_MSG_CHECKING([if security_dentry_init_security needs lsmcontext])
3609         LB2_LINUX_TEST_RESULT([security_dentry_init_security_with_ctx], [
3610                 AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX, 1,
3611                         [security_dentry_init_security needs lsmcontext])
3612         ])
3613 ]) # LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
3614
3615 #
3616 # LC_HAVE_NO_LLSEEK
3617 #
3618 # Linux commit v5.19-rc2-6-g868941b14441
3619 #   fs: remove no_llseek
3620 #
3621 AC_DEFUN([LC_SRC_HAVE_NO_LLSEEK], [
3622         LB2_LINUX_TEST_SRC([no_llseek], [
3623                 #include <linux/fs.h>
3624         ],[
3625                 static const struct file_operations fops = {
3626                         .llseek = &no_llseek,
3627                 };
3628                 (void)fops;
3629         ],[-Werror])
3630 ])
3631 AC_DEFUN([LC_HAVE_NO_LLSEEK], [
3632         AC_MSG_CHECKING([if no_llseek() is available])
3633         LB2_LINUX_TEST_RESULT([no_llseek], [
3634                 AC_DEFINE(HAVE_NO_LLSEEK, 1, [no_llseek() is available])
3635         ])
3636 ]) # LC_HAVE_NO_LLSEEK
3637
3638 #
3639 # LC_DQUOT_TRANSFER_WITH_USER_NS
3640 #
3641 # Linux commit v5.19-rc3-6-g71e7b535b890
3642 #  quota: port quota helpers mount ids
3643 #
3644 AC_DEFUN([LC_SRC_DQUOT_TRANSFER_WITH_USER_NS], [
3645         LB2_LINUX_TEST_SRC([dquot_transfer], [
3646                 #include <linux/quotaops.h>
3647         ],[
3648                 struct user_namespace *userns = NULL;
3649                 struct inode *inode = NULL;
3650                 struct iattr *iattr = NULL;
3651                 int err __attribute__ ((unused));
3652
3653                 err = dquot_transfer(userns, inode, iattr);
3654         ],[-Werror])
3655 ])
3656 AC_DEFUN([LC_DQUOT_TRANSFER_WITH_USER_NS], [
3657         AC_MSG_CHECKING([if dquot_transfer() has user_ns argument])
3658         LB2_LINUX_TEST_RESULT([dquot_transfer], [
3659                 AC_DEFINE(HAVE_DQUOT_TRANSFER_WITH_USER_NS, 1,
3660                         [dquot_transfer() has user_ns argument])
3661         ])
3662 ]) # LC_DQUOT_TRANSFER_WITH_USER_NS
3663
3664 #
3665 # LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
3666 #
3667 # Linux commit v5.19-rc3-392-g5490da4f06d1
3668 #  fs: Add aops->migrate_folio
3669 #
3670 AC_DEFUN([LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO], [
3671         LB2_LINUX_TEST_SRC([address_space_operations_migrate_folio], [
3672                 #include <linux/fs.h>
3673         ],[
3674                 struct address_space_operations *aops = NULL;
3675                 struct address_space *m = NULL;
3676                 struct folio *src = NULL;
3677                 struct folio *dst = NULL;
3678                 int err = aops->migrate_folio(m, dst, src, MIGRATE_ASYNC);
3679                 (void)err;
3680         ],[-Werror])
3681 ])
3682 AC_DEFUN([LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO], [
3683         AC_MSG_CHECKING([if struct address_space_operations() has migrate_folio()])
3684         LB2_LINUX_TEST_RESULT([address_space_operations_migrate_folio], [
3685                 AC_DEFINE(HAVE_AOPS_MIGRATE_FOLIO, 1,
3686                         [struct address_space_operations() has migrate_folio()])
3687         ])
3688 ]) # LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
3689
3690 #
3691 # LC_REGISTER_SHRINKER_FORMAT_NAMED
3692 #
3693 # Linux commit v5.19-rc4-52-ge33c267ab70d
3694 #   mm: shrinkers: provide shrinkers with names
3695 #
3696 AC_DEFUN([LC_SRC_REGISTER_SHRINKER_FORMAT_NAMED], [
3697         LB2_LINUX_TEST_SRC([register_shrinker_format], [
3698                 #include <linux/mm.h>
3699         ],[
3700                 if (register_shrinker(NULL, "lustre-%ps", __func__))
3701                         unregister_shrinker(NULL);
3702         ],[-Werror])
3703 ])
3704 AC_DEFUN([LC_REGISTER_SHRINKER_FORMAT_NAMED], [
3705         AC_MSG_CHECKING([if register_shrinker() returns status])
3706         LB2_LINUX_TEST_RESULT([register_shrinker_format], [
3707                 AC_DEFINE(HAVE_REGISTER_SHRINKER_FORMAT_NAMED, 1,
3708                         [register_shrinker() returns status])
3709         ])
3710 ]) # LC_REGISTER_SHRINKER_FORMAT_NAMED
3711
3712 #
3713 # LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
3714 #
3715 # From Linux commit v5.19-rc5-17-g0c5fd887d2bb
3716 #   acl: move idmapped mount fixup into vfs_{g,s}etxattr()
3717 # Until Linux commit v6.0-rc3-6-g6344e66970c6
3718 #   xattr: constify value argument in vfs_setxattr()
3719 #
3720 AC_DEFUN([LC_SRC_HAVE_VFS_SETXATTR_NON_CONST_VALUE], [
3721         LB2_LINUX_TEST_SRC([vfs_setxattr_non_const_value_arg], [
3722                 #include <linux/xattr.h>
3723         ],[
3724                 struct dentry *de = NULL;
3725                 const char *name = "an.xattr";
3726                 const void *value = NULL;
3727                 int err = vfs_setxattr(&init_user_ns, de, name, value, 0, 0);
3728                 (void)err;
3729         ],[-Werror])
3730 ]) # LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
3731 AC_DEFUN([LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE], [
3732         AC_MSG_CHECKING([if vfs_setxattr() value argument is non-const])
3733         LB2_LINUX_TEST_RESULT([vfs_setxattr_non_const_value_arg], [
3734                 AC_DEFINE([VFS_SETXATTR_VALUE(value)],
3735                           [(value)],
3736                           [vfs_setxattr() value argument is const void *])
3737         ],[
3738                 AC_DEFINE([VFS_SETXATTR_VALUE(value)],
3739                           [((void *)(value))],
3740                           [vfs_setxattr() value argument is non-const])
3741         ])
3742 ]) # LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
3743
3744 #
3745 # LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
3746 #
3747 # Linux commit v5.19-10313-geba2d3d79829
3748 #   get rid of non-advancing variants
3749 #
3750 AC_DEFUN([LC_SRC_HAVE_IOV_ITER_GET_PAGES_ALLOC2], [
3751         LB2_LINUX_TEST_SRC([iov_iter_get_pages_alloc2], [
3752                 #include <linux/uio.h>
3753         ],[
3754                 struct iov_iter *iter = NULL;
3755                 struct page ***pages = NULL;
3756                 size_t maxsize = 1;
3757                 size_t start;
3758                 size_t result __attribute__ ((unused));
3759                 result = iov_iter_get_pages_alloc2(iter, pages, maxsize, &start);
3760         ],[-Werror])
3761 ])
3762 AC_DEFUN([LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2], [
3763         AC_MSG_CHECKING([if iov_iter_get_pages_alloc2() is available])
3764         LB2_LINUX_TEST_RESULT([iov_iter_get_pages_alloc2], [
3765                 AC_DEFINE(HAVE_IOV_ITER_GET_PAGES_ALLOC2, 1,
3766                         [iov_iter_get_pages_alloc2() is available])
3767         ])
3768 ]) # LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
3769
3770 #
3771 # LC_HAVE_GET_RANDOM_U32_AND_U64
3772 #
3773 # Linux commit v4.10-rc3-6-gc440408cf690
3774 #   random: convert get_random_int/long into get_random_u32/u64
3775 # Linux commit v6.0-11338-gde492c83cae0
3776 #   prandom: remove unused functions
3777 #
3778 AC_DEFUN([LC_SRC_HAVE_GET_RANDOM_U32_AND_U64], [
3779         LB2_LINUX_TEST_SRC([get_random_u32_and_u64], [
3780                 #include <linux/random.h>
3781         ],[
3782                 u32 rand32 = get_random_u32();
3783                 u64 rand64 = get_random_u64();
3784                 (void)rand32;
3785                 (void)rand64;
3786         ],[-Werror])
3787 ])
3788 AC_DEFUN([LC_HAVE_GET_RANDOM_U32_AND_U64], [
3789         AC_MSG_CHECKING([if get_random_u32() and get_random_u64() are available])
3790         LB2_LINUX_TEST_RESULT([get_random_u32_and_u64], [
3791                 AC_DEFINE(HAVE_GET_RANDOM_U32_AND_U64, 1,
3792                         [get_random_[u32|u64] are available])
3793         ],[
3794                 AC_DEFINE([get_random_u32()], [prandom_u32()],
3795                         [get_random_u32() is not available, use prandom_u32])
3796         ])
3797 ]) # LC_HAVE_GET_RANDOM_U32_AND_U64
3798
3799 #
3800 # LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
3801 #
3802 # Linux commit v6.0-rc1-2-g25885a35a720
3803 #  Change calling conventions for filldir_t
3804 #
3805 AC_DEFUN([LC_SRC_NFS_FILLDIR_USE_CTX_RETURN_BOOL], [
3806         LB2_LINUX_TEST_SRC([filldir_ctx_return_bool], [
3807                 #include <linux/fs.h>
3808         ],[
3809                 bool filldir(struct dir_context *ctx, const char* name,
3810                              int i, loff_t off, u64 tmp, unsigned temp)
3811                 {
3812                         return 0;
3813                 }
3814
3815                 struct dir_context ctx = {
3816                         .actor = filldir,
3817                 };
3818
3819                 ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
3820         ],[-Werror])
3821 ])
3822 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL], [
3823         AC_MSG_CHECKING([if filldir_t uses struct dir_context and returns bool])
3824         LB2_LINUX_TEST_RESULT([filldir_ctx_return_bool], [
3825                 AC_DEFINE(HAVE_FILLDIR_USE_CTX_RETURN_BOOL, 1,
3826                         [filldir_t needs struct dir_context and returns bool])
3827                 AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
3828                         [filldir_t needs struct dir_context as argument])
3829                 AC_DEFINE(FILLDIR_TYPE, bool,
3830                         [filldir_t return type is bool or int])
3831         ],[
3832                 AC_DEFINE(FILLDIR_TYPE, int,
3833                         [filldir_t return type is bool or int])
3834         ])
3835 ]) # LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
3836
3837 #
3838 # LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
3839 #
3840 # Linux commit v6.0-rc3-94-g35b471467f88
3841 #   filemap: add filemap_get_folios_contig()
3842 #
3843 AC_DEFUN([LC_SRC_HAVE_FILEMAP_GET_FOLIOS_CONTIG], [
3844         LB2_LINUX_TEST_SRC([filemap_get_folios_contig], [
3845                 #include <linux/pagemap.h>
3846         ],[
3847                 struct address_space *m = NULL;
3848                 pgoff_t start = 0;
3849                 struct folio_batch *fbatch = NULL;
3850                 (void)filemap_get_folios_contig(m, &start, ULONG_MAX, fbatch);
3851         ],[-Werror])
3852 ])
3853 AC_DEFUN([LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG], [
3854         AC_MSG_CHECKING([if filemap_get_folios_contig() is available])
3855         LB2_LINUX_TEST_RESULT([filemap_get_folios_contig], [
3856                 AC_DEFINE(HAVE_FILEMAP_GET_FOLIOS_CONTIG, 1,
3857                         [filemap_get_folios_contig() is available])
3858         ])
3859 ]) # LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
3860
3861 #
3862 # LC_HAVE_GET_RANDOM_U32_BELOW
3863 #
3864 # Linux commit v6.1-13825-g3c202d14a9d7
3865 #   prandom: remove prandom_u32_max()
3866 #
3867 AC_DEFUN([LC_SRC_HAVE_GET_RANDOM_U32_BELOW], [
3868         LB2_LINUX_TEST_SRC([get_random_u32_below], [
3869                 #include <linux/random.h>
3870         ],[
3871                 u32 rand32 = get_random_u32_below(99);
3872                 (void)rand32;
3873         ],[-Werror])
3874 ])
3875 AC_DEFUN([LC_HAVE_GET_RANDOM_U32_BELOW], [
3876         AC_MSG_CHECKING([if get_random_u32_below()is available])
3877         LB2_LINUX_TEST_RESULT([get_random_u32_below], [
3878                 AC_DEFINE(HAVE_GET_RANDOM_U32_BELOW, 1,
3879                         [get_random_u32_below() is available])
3880         ],[
3881                 AC_DEFINE([get_random_u32_below(v)], [prandom_u32_max(v)],
3882                         [get_random_u32_below() is not available])
3883         ])
3884 ]) # LC_HAVE_GET_RANDOM_U32_BELOW
3885
3886 #
3887 # LC_HAVE_ACL_WITH_DENTRY
3888 #
3889 # Linux commit v6.1-rc1-2-g138060ba92b3
3890 #   fs: pass dentry to set acl method
3891 # Linux commit v6.1-rc1-4-g7420332a6ff4
3892 #   fs: add new get acl method
3893 #
3894 AC_DEFUN([LC_SRC_HAVE_ACL_WITH_DENTRY], [
3895         LB2_LINUX_TEST_SRC([acl_with_dentry], [
3896                 #include <linux/fs.h>
3897         ],[
3898                 struct dentry *dentry = NULL;
3899
3900                 ((struct inode_operations *)1)->get_acl(NULL, dentry, 0);
3901                 (void)dentry;
3902         ],[-Werror])
3903 ])
3904 AC_DEFUN([LC_HAVE_ACL_WITH_DENTRY], [
3905         AC_MSG_CHECKING([if 'get_acl' and 'set_acl' use dentry argument])
3906         LB2_LINUX_TEST_RESULT([acl_with_dentry], [
3907                 AC_DEFINE(HAVE_ACL_WITH_DENTRY, 1,
3908                         ['get_acl' and 'set_acl' use dentry argument])
3909         ])
3910 ]) # LC_HAVE_ACL_WITH_DENTRY
3911
3912 #
3913 # LC_HAVE_U64_CAPABILITY
3914 #
3915 # linux kernel v6.2-13111-gf122a08b197d
3916 #   capability: just use a 'u64' instead of a 'u32[2]' array
3917 #
3918 AC_DEFUN([LC_SRC_HAVE_U64_CAPABILITY], [
3919         LB2_LINUX_TEST_SRC([kernel_cap_t_has_u64_value], [
3920                 #include <linux/cred.h>
3921                 #include <linux/capability.h>
3922         ],[
3923                 kernel_cap_t cap __attribute__ ((unused));
3924                 cap.val = 0xffffffffffffffffull;
3925         ],[-Werror])
3926 ])
3927 AC_DEFUN([LC_HAVE_U64_CAPABILITY], [
3928         AC_MSG_CHECKING([if 'kernel_cap_t' has u64 val])
3929         LB2_LINUX_TEST_RESULT([kernel_cap_t_has_u64_value], [
3930                 AC_DEFINE(HAVE_U64_CAPABILITY, 1,
3931                         ['kernel_cap_t' has u64 val])
3932         ])
3933 ]) # LC_HAVE_U64_CAPABILITY
3934
3935 #
3936 # LC_HAVE_MNT_IDMAP_ARG
3937 #
3938 # linux kernel v6.2-rc1-4-gb74d24f7a74f
3939 #   fs: port ->getattr() to pass mnt_idmap
3940 # linux kernel v6.2-rc1-3-gc1632a0f1120
3941 #   fs: port ->setattr() to pass mnt_idmap
3942 #
3943 AC_DEFUN([LC_SRC_HAVE_MNT_IDMAP_ARG], [
3944         LB2_LINUX_TEST_SRC([inode_ops_getattr_has_mnt_idmap_argument], [
3945                 #include <linux/mount.h>
3946                 #include <linux/fs.h>
3947         ],[
3948                 ((struct inode_operations *)1)->getattr((struct mnt_idmap *)NULL,
3949                                                         NULL, NULL, 0, 0);
3950         ],[-Werror])
3951 ])
3952 AC_DEFUN([LC_HAVE_MNT_IDMAP_ARG], [
3953         AC_MSG_CHECKING([if 'inode_operations' members have mnt_idmap argument])
3954         LB2_LINUX_TEST_RESULT([inode_ops_getattr_has_mnt_idmap_argument], [
3955                 AC_DEFINE(HAVE_MNT_IDMAP_ARG, 1,
3956                         ['inode_operations' members have mnt_idmap argument])
3957                 AC_DEFINE(HAVE_USER_NAMESPACE_ARG, 1,
3958                         [use mnt_idmap in place of user_namespace argument])
3959                 AC_DEFINE(HAVE_DQUOT_TRANSFER_WITH_USER_NS, 1,
3960                         [use mnt_idmap with dquot_transfer])
3961         ])
3962 ]) # LC_HAVE_MNT_IDMAP_ARG
3963
3964 #
3965 # LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
3966 #
3967 # Linux commit v6.2-rc3-9-g5970e15dbcfe
3968 #   filelock: move file locking definitions to separate header file
3969 #
3970 AC_DEFUN([LC_SRC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK], [
3971         LB2_LINUX_TEST_SRC([locks_lock_file_wait_in_filelock], [
3972                 #include <linux/filelock.h>
3973         ],[
3974                 locks_lock_file_wait(NULL, NULL);
3975         ])
3976 ])
3977 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK], [
3978         AC_MSG_CHECKING([if 'locks_lock_file_wait' exists in filelock.h])
3979         LB2_LINUX_TEST_RESULT([locks_lock_file_wait_in_filelock], [
3980                 AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
3981                         [kernel has locks_lock_file_wait in filelock.h])
3982                 AC_DEFINE(HAVE_LINUX_FILELOCK_HEADER, 1,
3983                         [linux/filelock.h is present])
3984         ])
3985 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
3986
3987 #
3988 # LC_PROG_LINUX
3989 #
3990 # Lustre linux kernel checks
3991 #
3992 AC_DEFUN([LC_PROG_LINUX_SRC], [
3993         AS_IF([test "x$enable_gss" != xno], [
3994                 LC_SRC_KEY_TYPE_INSTANTIATE_2ARGS
3995                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_MD5])
3996                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_SHA1])
3997                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_SHA256])
3998                 LB2_SRC_CHECK_CONFIG_IM([CRYPTO_SHA512])
3999         ])
4000         AS_IF([test "x$enable_server" != xno], [
4001                 LC_SRC_CONFIG_QUOTA
4002                 LC_SRC_STACK_SIZE
4003         ])
4004         LC_SRC_CONFIG_FHANDLE
4005         LC_SRC_POSIX_ACL_CONFIG
4006         LC_SRC_HAVE_PROJECT_QUOTA
4007
4008         # 3.11
4009         LC_SRC_INVALIDATE_RANGE
4010         LC_SRC_HAVE_DIR_CONTEXT
4011         LC_SRC_D_COMPARE_5ARGS
4012         LC_SRC_HAVE_DCOUNT
4013         LC_SRC_PID_NS_FOR_CHILDREN
4014
4015         # 3.12
4016         LC_SRC_OLDSIZE_TRUNCATE_PAGECACHE
4017         LC_SRC_PTR_ERR_OR_ZERO_MISSING
4018         LC_SRC_HAVE_DENTRY_D_U_D_ALIAS_LIST
4019         LC_SRC_HAVE_DENTRY_D_U_D_ALIAS_HLIST
4020         LC_SRC_HAVE_DENTRY_D_CHILD
4021         LC_SRC_KIOCB_KI_LEFT
4022         LC_SRC_REGISTER_SHRINKER_RET
4023
4024         # 3.13
4025         LC_SRC_VFS_RENAME_5ARGS
4026         LC_SRC_VFS_UNLINK_3ARGS
4027         LC_SRC_HAVE_D_IS_POSITIVE
4028
4029         # 3.14
4030         LC_SRC_HAVE_BVEC_ITER
4031         LC_SRC_HAVE_TRUNCATE_IPAGES_FINAL
4032         LC_SRC_IOPS_RENAME_WITH_FLAGS
4033         LC_SRC_IOP_SET_ACL
4034
4035         # 3.15
4036         LC_SRC_VFS_RENAME_6ARGS
4037
4038         # 3.16
4039         LC_SRC_DIRECTIO_USE_ITER
4040         LC_SRC_HAVE_IOV_ITER_INIT_DIRECTION
4041         LC_SRC_HAVE_IOV_ITER_TRUNCATE
4042         LC_SRC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
4043         LC_SRC_PAGECACHE_GET_PAGE
4044
4045         # 3.17
4046         LC_SRC_HAVE_INTERVAL_BLK_INTEGRITY
4047         LC_SRC_KEY_MATCH_DATA
4048         LC_SRC_HAVE_BLK_INTEGRITY_ITER
4049
4050         # 3.18
4051         LC_SRC_NFS_FILLDIR_USE_CTX
4052         LC_SRC_PERCPU_COUNTER_INIT
4053
4054         # 3.19
4055         LC_SRC_KIOCB_HAS_NBYTES
4056         LC_SRC_HAVE_DQUOT_QC_DQBLK
4057         LC_SRC_HAVE_AIO_COMPLETE
4058         LC_SRC_HAVE_IS_ROOT_INODE
4059
4060         # 3.20
4061         LC_SRC_BACKING_DEV_INFO_REMOVAL
4062
4063         # 4.1.0
4064         LC_SRC_IOV_ITER_RW
4065         LC_SRC_HAVE___BI_CNT
4066
4067         # 4.2
4068         LC_SRC_BIO_ENDIO_USES_ONE_ARG
4069         LC_SRC_SYMLINK_OPS_USE_NAMEIDATA
4070         LC_SRC_ACCOUNT_PAGE_DIRTIED_3ARGS
4071         LC_SRC_HAVE_CRYPTO_ALLOC_SKCIPHER
4072
4073         # 4.3
4074         LC_SRC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
4075         LC_SRC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
4076         LC_SRC_HAVE_CACHE_HEAD_HLIST
4077         LC_SRC_HAVE_XATTR_HANDLER_SIMPLIFIED
4078
4079         # 4.4
4080         LC_SRC_HAVE_LOCKS_LOCK_FILE_WAIT
4081         LC_SRC_HAVE_KEY_PAYLOAD_DATA_ARRAY
4082         LC_SRC_HAVE_XATTR_HANDLER_NAME
4083         LC_SRC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL
4084         LC_SRC_HAVE_BI_OPF
4085         LC_SRC_HAVE_SUBMIT_BIO_2ARGS
4086         LC_SRC_HAVE_CLEAN_BDEV_ALIASES
4087
4088         # 4.5
4089         LC_SRC_HAVE_FILE_DENTRY
4090
4091         # 4.6
4092         LC_SRC_HAVE_INODE_LOCK
4093         LC_SRC_HAVE_IOP_GET_LINK
4094         LC_SRC_HAVE_IN_COMPAT_SYSCALL
4095         LC_SRC_HAVE_XATTR_HANDLER_INODE_PARAM
4096         LC_SRC_LOCK_PAGE_MEMCG
4097         LC_SRC_HAVE_DOWN_WRITE_KILLABLE
4098
4099         # 4.7
4100         LC_SRC_D_IN_LOOKUP
4101         LC_SRC_D_INIT
4102         LC_SRC_DIRECTIO_2ARGS
4103         LC_SRC_GENERIC_WRITE_SYNC_2ARGS
4104         LC_SRC_FOP_ITERATE_SHARED
4105
4106         # 4.8
4107         LC_SRC_HAVE_POSIX_ACL_VALID_USER_NS
4108         LC_SRC_D_COMPARE_4ARGS
4109         LC_SRC_FULL_NAME_HASH_3ARGS
4110         LC_SRC_STRUCT_POSIX_ACL_XATTR
4111         LC_SRC_IOP_XATTR
4112
4113         # 4.9
4114         LC_SRC_GROUP_INFO_GID
4115         LC_SRC_VFS_SETXATTR
4116         LC_SRC_POSIX_ACL_UPDATE_MODE
4117         LC_SRC_HAVE_BDI_IO_PAGES
4118
4119         # 4.10
4120         LC_SRC_IOP_GENERIC_READLINK
4121         LC_SRC_HAVE_VM_FAULT_ADDRESS
4122
4123         # 4.11
4124         LC_SRC_INODEOPS_ENHANCED_GETATTR
4125         LC_SRC_VM_OPERATIONS_REMOVE_VMF_ARG
4126         LC_SRC_HAVE_KEY_USAGE_REFCOUNT
4127         LC_SRC_HAVE_CRYPTO_MAX_ALG_NAME_128
4128
4129         # 4.12
4130         LC_SRC_CURRENT_TIME
4131         LC_SRC_SUPER_SETUP_BDI_NAME
4132         LC_SRC_BI_STATUS
4133
4134         # 4.13
4135         LC_SRC_HAVE_GET_INODE_USAGE
4136
4137         # 4.14
4138         LC_SRC_PAGEVEC_INIT_ONE_PARAM
4139         LC_SRC_BI_BDEV
4140         LC_SRC_INTERVAL_TREE_CACHED
4141
4142         # 4.17
4143         LC_SRC_VM_FAULT_T
4144         LC_SRC_VM_FAULT_RETRY
4145         LC_SRC_I_PAGES
4146
4147         # 4.18
4148         LC_SRC_INODE_TIMESPEC64
4149         LC_SRC_ALLOC_FILE_PSEUDO
4150
4151         # 4.20
4152         LC_SRC_RADIX_TREE_TAG_SET
4153         LC_SRC_UAPI_LINUX_MOUNT_H
4154         LC_SRC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
4155
4156         # 5.0
4157         LC_SRC_GENL_FAMILY_HAS_RESV_START_OP
4158
4159         # 5.1
4160         LC_SRC_HAVE_BVEC_ITER_ALL
4161
4162         # 5.2
4163         LC_SRC_KEYRING_SEARCH_4ARGS
4164
4165         # 5.3
4166         LC_SRC_BIO_BI_PHYS_SEGMENTS
4167         LC_SRC_LM_COMPARE_OWNER_EXISTS
4168
4169         # 5.5
4170         LC_SRC_FSCRYPT_DIGESTED_NAME
4171
4172         # 5.7
4173         LC_SRC_FSCRYPT_DUMMY_CONTEXT_ENABLED
4174
4175         # 5.8
4176         LC_SRC_HAVE_KTHREAD_USE_MM
4177
4178         # 5.9
4179         LC_SRC_FSCRYPT_FNAME_ALLOC_BUFFER
4180         LC_SRC_FSCRYPT_SET_CONTEXT
4181         LC_SRC_FSCRYPT_NOKEY_NAME
4182         LC_SRC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
4183         LC_SRC_FSCRYPT_DUMMY_POLICY
4184         LC_SRC_HAVE_ITER_FILE_SPLICE_WRITE
4185
4186         # 5.10
4187         LC_SRC_HAVE_BDI_DEBUG_STATS
4188         LC_SRC_FSCRYPT_IS_NOKEY_NAME
4189         LC_SRC_FSCRYPT_PREPARE_READDIR
4190
4191         # 5.11
4192         LC_SRC_BIO_SET_DEV
4193
4194         # 5.12
4195         LC_SRC_HAVE_USER_NAMESPACE_ARG
4196
4197         # 5.13
4198         LC_SRC_HAVE_COPY_PAGE_FROM_ITER_ATOMIC
4199
4200         # 5.15
4201         LC_SRC_HAVE_GET_ACL_RCU_ARG
4202         LC_SRC_HAVE_FAULT_IN_IOV_ITER_READABLE
4203
4204         # 5.16
4205         LC_SRC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
4206         LC_SRC_HAVE_KIOCB_COMPLETE_2ARGS
4207
4208         # 5.17
4209         LC_SRC_HAVE_INVALIDATE_FOLIO
4210         LC_SRC_HAVE_DIRTY_FOLIO
4211
4212         # 5.18
4213         LC_SRC_HAVE_ALLOC_INODE_SB
4214
4215         # 5.19
4216         LC_SRC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
4217         LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
4218         LC_SRC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
4219         LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
4220         LC_SRC_HAVE_LSMCONTEXT_INIT
4221         LC_SRC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
4222
4223         # 6.0
4224         LC_SRC_HAVE_NO_LLSEEK
4225         LC_SRC_DQUOT_TRANSFER_WITH_USER_NS
4226         LC_SRC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
4227         LC_SRC_REGISTER_SHRINKER_FORMAT_NAMED
4228         LC_SRC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
4229         LC_SRC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
4230
4231         # 6.1
4232         LC_SRC_HAVE_GET_RANDOM_U32_AND_U64
4233         LC_SRC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
4234         LC_SRC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
4235
4236         # 6.2
4237         LC_SRC_HAVE_GET_RANDOM_U32_BELOW
4238         LC_SRC_HAVE_ACL_WITH_DENTRY
4239
4240         # 6.3
4241         LC_SRC_HAVE_MNT_IDMAP_ARG
4242         LC_SRC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
4243         LC_SRC_HAVE_U64_CAPABILITY
4244
4245         # kernel patch to extend integrity interface
4246         LC_SRC_BIO_INTEGRITY_PREP_FN
4247 ])
4248
4249 AC_DEFUN([LC_PROG_LINUX_RESULTS], [
4250         AS_IF([test "x$enable_gss" != xno], [
4251                 LC_KEY_TYPE_INSTANTIATE_2ARGS
4252
4253                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_MD5], [],
4254                         [AC_MSG_WARN(
4255                         [kernel MD5 support is recommended by using GSS.])])
4256                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
4257                         [AC_MSG_WARN(
4258                         [kernel SHA1 support is recommended by using GSS.])])
4259                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
4260                         [AC_MSG_WARN(
4261                         [kernel SHA256 support is recommended by using GSS.])])
4262                 LB2_TEST_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
4263                         [AC_MSG_WARN(
4264                         [kernel SHA512 support is recommended by using GSS.])])
4265         ])
4266         AS_IF([test "x$enable_server" != xno], [
4267                 LC_CONFIG_QUOTA
4268                 LC_STACK_SIZE
4269         ])
4270         LC_CONFIG_FHANDLE
4271         LC_POSIX_ACL_CONFIG
4272         LC_HAVE_PROJECT_QUOTA
4273
4274         # 3.11
4275         LC_INVALIDATE_RANGE
4276         LC_HAVE_DIR_CONTEXT
4277         LC_D_COMPARE_5ARGS
4278         LC_HAVE_DCOUNT
4279         LC_HAVE_DENTRY_D_U_D_ALIAS_LIST
4280         LC_HAVE_DENTRY_D_U_D_ALIAS_HLIST
4281         LC_HAVE_DENTRY_D_CHILD
4282         LC_PID_NS_FOR_CHILDREN
4283
4284         # 3.12
4285         LC_OLDSIZE_TRUNCATE_PAGECACHE
4286         LC_PTR_ERR_OR_ZERO_MISSING
4287         LC_KIOCB_KI_LEFT
4288         LC_REGISTER_SHRINKER_RET
4289
4290         # 3.13
4291         LC_VFS_RENAME_5ARGS
4292         LC_VFS_UNLINK_3ARGS
4293         LC_HAVE_D_IS_POSITIVE
4294
4295         # 3.14
4296         LC_HAVE_BVEC_ITER
4297         LC_HAVE_TRUNCATE_IPAGES_FINAL
4298         LC_IOPS_RENAME_WITH_FLAGS
4299         LC_IOP_SET_ACL
4300
4301         # 3.15
4302         LC_VFS_RENAME_6ARGS
4303
4304         # 3.16
4305         LC_DIRECTIO_USE_ITER
4306         LC_HAVE_IOV_ITER_INIT_DIRECTION
4307         LC_HAVE_IOV_ITER_TRUNCATE
4308         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
4309         LC_PAGECACHE_GET_PAGE
4310
4311         # 3.17
4312         LC_HAVE_INTERVAL_BLK_INTEGRITY
4313         LC_KEY_MATCH_DATA
4314         LC_HAVE_BLK_INTEGRITY_ITER
4315
4316         # 3.18
4317         LC_PERCPU_COUNTER_INIT
4318         LC_NFS_FILLDIR_USE_CTX
4319
4320         # 3.19
4321         LC_KIOCB_HAS_NBYTES
4322         LC_HAVE_DQUOT_QC_DQBLK
4323         LC_HAVE_AIO_COMPLETE
4324         LC_HAVE_IS_ROOT_INODE
4325
4326         # 3.20
4327         LC_BACKING_DEV_INFO_REMOVAL
4328
4329         # 4.1.0
4330         LC_IOV_ITER_RW
4331         LC_HAVE___BI_CNT
4332
4333         # 4.2
4334         LC_BIO_ENDIO_USES_ONE_ARG
4335         LC_SYMLINK_OPS_USE_NAMEIDATA
4336         LC_ACCOUNT_PAGE_DIRTIED_3ARGS
4337         LC_HAVE_CRYPTO_ALLOC_SKCIPHER
4338
4339         # 4.3
4340         LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
4341         LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
4342         LC_HAVE_CACHE_HEAD_HLIST
4343         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
4344
4345         # 4.4
4346         LC_HAVE_LOCKS_LOCK_FILE_WAIT
4347         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
4348         LC_HAVE_XATTR_HANDLER_NAME
4349         LC_HAVE_BI_OPF
4350         LC_HAVE_SUBMIT_BIO_2ARGS
4351         LC_HAVE_CLEAN_BDEV_ALIASES
4352
4353         # 4.5
4354         LC_HAVE_FILE_DENTRY
4355
4356         # 4.5
4357         LC_HAVE_INODE_LOCK
4358         LC_HAVE_IOP_GET_LINK
4359
4360         # 4.6
4361         LC_HAVE_IN_COMPAT_SYSCALL
4362         LC_HAVE_XATTR_HANDLER_INODE_PARAM
4363         LC_LOCK_PAGE_MEMCG
4364         LC_HAVE_DOWN_WRITE_KILLABLE
4365
4366         # 4.7
4367         LC_D_IN_LOOKUP
4368         LC_D_INIT
4369         LC_DIRECTIO_2ARGS
4370         LC_GENERIC_WRITE_SYNC_2ARGS
4371         LC_FOP_ITERATE_SHARED
4372
4373         # 4.8
4374         LC_HAVE_POSIX_ACL_VALID_USER_NS
4375         LC_D_COMPARE_4ARGS
4376         LC_FULL_NAME_HASH_3ARGS
4377         LC_STRUCT_POSIX_ACL_XATTR
4378         LC_IOP_XATTR
4379
4380         # 4.9
4381         LC_GROUP_INFO_GID
4382         LC_VFS_SETXATTR
4383         LC_POSIX_ACL_UPDATE_MODE
4384         LC_HAVE_BDI_IO_PAGES
4385
4386         # 4.10
4387         LC_IOP_GENERIC_READLINK
4388         LC_HAVE_VM_FAULT_ADDRESS
4389
4390         # 4.11
4391         LC_INODEOPS_ENHANCED_GETATTR
4392         LC_VM_OPERATIONS_REMOVE_VMF_ARG
4393         LC_HAVE_KEY_USAGE_REFCOUNT
4394         LC_HAVE_CRYPTO_MAX_ALG_NAME_128
4395
4396         # 4.12
4397         LC_CURRENT_TIME
4398         LC_SUPER_SETUP_BDI_NAME
4399         LC_BI_STATUS
4400
4401         # 4.13
4402         LC_BIO_INTEGRITY_PREP_FN_RETURNS_BOOL
4403         LC_HAVE_GET_INODE_USAGE
4404
4405         # 4.14
4406         LC_PAGEVEC_INIT_ONE_PARAM
4407         LC_BI_BDEV
4408         LC_INTERVAL_TREE_CACHED
4409
4410         # 4.17
4411         LC_VM_FAULT_T
4412         LC_VM_FAULT_RETRY
4413         LC_I_PAGES
4414
4415         # 4.18
4416         LC_ALLOC_FILE_PSEUDO
4417         LC_INODE_TIMESPEC64
4418
4419         # 4.20
4420         LC_RADIX_TREE_TAG_SET
4421         LC_UAPI_LINUX_MOUNT_H
4422         LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
4423
4424         # 5.0
4425         LC_GENL_FAMILY_HAS_RESV_START_OP
4426
4427         # 5.1
4428         LC_HAVE_BVEC_ITER_ALL
4429
4430         # 5.2
4431         LC_KEYRING_SEARCH_4ARGS
4432
4433         # 5.3
4434         LC_BIO_BI_PHYS_SEGMENTS
4435         LC_HAVE_FLUSH_DELAYED_FPUT
4436         LC_LM_COMPARE_OWNER_EXISTS
4437
4438         # 5.5
4439         LC_FSCRYPT_DIGESTED_NAME
4440
4441         # 5.7
4442         LC_FSCRYPT_DUMMY_CONTEXT_ENABLED
4443
4444         # 5.8
4445         LC_HAVE_KTHREAD_USE_MM
4446
4447         # 5.9
4448         LC_HAVE_ITER_FILE_SPLICE_WRITE
4449
4450         # 5.9
4451         LC_FSCRYPT_FNAME_ALLOC_BUFFER
4452         LC_FSCRYPT_SET_CONTEXT
4453         LC_FSCRYPT_D_REVALIDATE
4454         LC_FSCRYPT_NOKEY_NAME
4455         LC_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
4456         LC_FSCRYPT_DUMMY_POLICY
4457
4458         # 5.10
4459         LC_HAVE_BDI_DEBUG_STATS
4460         LC_FSCRYPT_IS_NOKEY_NAME
4461         LC_FSCRYPT_PREPARE_READDIR
4462
4463         # 5.11
4464         LC_BIO_SET_DEV
4465
4466         # 5.12
4467         LC_HAVE_USER_NAMESPACE_ARG
4468
4469         # 5.13
4470         LC_HAVE_FILEATTR_GET
4471         LC_HAVE_COPY_PAGE_FROM_ITER_ATOMIC
4472
4473         # 5.15
4474         LC_HAVE_GET_ACL_RCU_ARG
4475
4476         # 5.15
4477         LC_HAVE_GET_ACL_RCU_ARG
4478         LC_HAVE_INVALIDATE_LOCK
4479         LC_HAVE_FAULT_IN_IOV_ITER_READABLE
4480
4481         # 5.16
4482         LC_HAVE_SECURITY_DENTRY_INIT_WITH_XATTR_NAME_ARG
4483         LC_HAVE_KIOCB_COMPLETE_2ARGS
4484         LC_EXPORTS_DELETE_FROM_PAGE_CACHE
4485         LC_HAVE_WB_STAT_MOD
4486
4487         # 5.17
4488         LC_HAVE_INVALIDATE_FOLIO
4489         LC_HAVE_DIRTY_FOLIO
4490
4491         # 5.18
4492         LC_HAVE_ALLOC_INODE_SB
4493
4494         # 5.19
4495         LC_GRAB_CACHE_PAGE_WRITE_BEGIN_WITH_FLAGS
4496         LC_HAVE_ADDRESS_SPACE_OPERATIONS_READ_FOLIO
4497         LC_HAVE_READ_CACHE_PAGE_FILLER_WITH_FILE
4498         LC_HAVE_ADDRESS_SPACE_OPERATIONS_RELEASE_FOLIO
4499         LC_HAVE_LSMCONTEXT_INIT
4500         LC_SECURITY_DENTRY_INIT_SECURTY_WITH_CTX
4501
4502         # 6.0
4503         LC_HAVE_NO_LLSEEK
4504         LC_DQUOT_TRANSFER_WITH_USER_NS
4505         LC_HAVE_ADDRESS_SPACE_OPERATIONS_MIGRATE_FOLIO
4506         LC_REGISTER_SHRINKER_FORMAT_NAMED
4507         LC_HAVE_VFS_SETXATTR_NON_CONST_VALUE
4508         LC_HAVE_IOV_ITER_GET_PAGES_ALLOC2
4509
4510         # 6.1
4511         LC_HAVE_GET_RANDOM_U32_AND_U64
4512         LC_NFS_FILLDIR_USE_CTX_RETURN_BOOL
4513         LC_HAVE_FILEMAP_GET_FOLIOS_CONTIG
4514
4515         # 6.2
4516         LC_HAVE_GET_RANDOM_U32_BELOW
4517         LC_HAVE_ACL_WITH_DENTRY
4518
4519         # 6.3
4520         LC_HAVE_MNT_IDMAP_ARG
4521         LC_HAVE_LOCKS_LOCK_FILE_WAIT_IN_FILELOCK
4522         LC_HAVE_U64_CAPABILITY
4523
4524         # kernel patch to extend integrity interface
4525         LC_BIO_INTEGRITY_PREP_FN
4526 ])
4527
4528 #
4529 # LC_PROG_LINUX
4530 #
4531 # Lustre linux kernel checks
4532 #
4533 AC_DEFUN([LC_PROG_LINUX], [
4534         AC_MSG_NOTICE([Lustre kernel checks
4535 ==============================================================================])
4536
4537         LC_CONFIG_PINGER
4538         LC_CONFIG_CHECKSUM
4539         LC_CONFIG_FLOCK
4540         LC_CONFIG_HEALTH_CHECK_WRITE
4541         LC_CONFIG_LRU_RESIZE
4542         LC_CONFIG_GSS
4543
4544         LC_GLIBC_SUPPORT_FHANDLES
4545         LC_GLIBC_SUPPORT_COPY_FILE_RANGE
4546         LC_OPENSSL_SSK
4547         LC_OPENSSL_GETSEPOL
4548
4549         # 4.1.0 - Check export
4550         LC_HAVE_SYNC_READ_WRITE
4551
4552         # 4.8 - Check export
4553         LC_EXPORT_DEFAULT_FILE_SPLICE_READ
4554
4555         # 5.2 - Check export
4556         LC_ACCOUNT_PAGE_DIRTIED
4557
4558 ]) # LC_PROG_LINUX
4559
4560 #
4561 # LC_CONFIG_CLIENT
4562 #
4563 # Check whether to build the client side of Lustre
4564 #
4565 AC_DEFUN([LC_CONFIG_CLIENT], [
4566 AC_MSG_CHECKING([whether to build Lustre client support])
4567 AC_ARG_ENABLE([client],
4568         AS_HELP_STRING([--disable-client],
4569                 [disable Lustre client support]),
4570         [], [enable_client="yes"])
4571 AC_MSG_RESULT([$enable_client])
4572 ]) # LC_CONFIG_CLIENT
4573
4574 #
4575 # --enable-mpitests
4576 #
4577 AC_DEFUN([LB_CONFIG_MPITESTS], [
4578 AC_ARG_ENABLE([mpitests],
4579         AS_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
4580                        [include mpi tests]), [
4581                 enable_mpitests="yes"
4582                 case $enableval in
4583                 yes)
4584                         MPICC_WRAPPER="mpicc"
4585                         MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
4586                         ;;
4587                 no)
4588                         enable_mpitests="no"
4589                         MPI_BIN=""
4590                         ;;
4591                 *)
4592                         MPICC_WRAPPER=$enableval
4593                         MPI_BIN=$(eval echo $MPICC_WRAPPER | xargs dirname)
4594                         ;;
4595                 esac
4596         ], [
4597                 enable_mpitests="yes"
4598                 MPICC_WRAPPER="mpicc"
4599                 MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
4600         ])
4601
4602         if test "x$enable_mpitests" != "xno"; then
4603                 oldcc=$CC
4604                 CC=$MPICC_WRAPPER
4605                 AC_CACHE_CHECK([whether mpitests can be built],
4606                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
4607                         #include <mpi.h>
4608                         int main(void) {
4609                                 int flag;
4610                                 MPI_Initialized(&flag);
4611                                 return 0;
4612                         }
4613                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
4614                 ])
4615                 enable_mpitests=$lb_cv_mpi_tests
4616                 CC=$oldcc
4617         fi
4618         AC_SUBST(MPI_BIN)
4619         AC_SUBST(MPICC_WRAPPER)
4620 ]) # LB_CONFIG_MPITESTS
4621
4622 #
4623 # LC_ENABLE_QUOTA
4624 #
4625 # whether to enable quota support global control
4626 #
4627 AC_DEFUN([LC_ENABLE_QUOTA], [
4628 AC_MSG_CHECKING([whether to enable quota support global control])
4629 AC_ARG_ENABLE([quota],
4630         AS_HELP_STRING([--enable-quota],
4631                 [enable quota support]),
4632         [], [enable_quota="yes"])
4633 AS_IF([test "x$enable_quota" = xyes],
4634         [AC_MSG_RESULT([yes])],
4635         [AC_MSG_RESULT([no])])
4636 ]) # LC_ENABLE_QUOTA
4637
4638 #
4639 # LC_QUOTA
4640 #
4641 AC_DEFUN([LC_QUOTA], [
4642 #check global
4643 LC_ENABLE_QUOTA
4644 #check for utils
4645 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
4646         AC_CHECK_HEADER([sys/quota.h],
4647                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
4648                         [Define to 1 if you have <sys/quota.h>.])],
4649                 [AC_MSG_ERROR([did not find <sys/quota.h> on your system])])
4650 ])
4651 ]) # LC_QUOTA
4652
4653 #
4654 # LC_OSD_ADDON
4655 #
4656 # configure support for optional OSD implementation
4657 #
4658 AC_DEFUN([LC_OSD_ADDON], [
4659 AC_MSG_CHECKING([whether to use OSD addon])
4660 AC_ARG_WITH([osd],
4661         AS_HELP_STRING([--with-osd=path],
4662                 [set path to optional osd]),
4663         [
4664         case "$with_osd" in
4665         no)
4666                 ENABLEOSDADDON=0
4667                 ;;
4668         *)
4669                 OSDADDON="$with_osd"
4670                 ENABLEOSDADDON=1
4671                 ;;
4672         esac
4673         ], [
4674                 ENABLEOSDADDON=0
4675         ])
4676 AS_IF([test $ENABLEOSDADDON -eq 0], [
4677         AC_MSG_RESULT([no])
4678         OSDADDON=""
4679 ], [
4680         OSDMODNAME=$(basename $OSDADDON)
4681         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
4682                 AC_MSG_RESULT([cannot link])
4683                 OSDADDON=""
4684         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
4685                 AC_MSG_RESULT([$OSDMODNAME])
4686                 OSDADDON="obj-m += $OSDMODNAME/"
4687         ], [
4688                 AC_MSG_RESULT([cannot link])
4689                 OSDADDON=""
4690         ])
4691 ])
4692 AC_SUBST(OSDADDON)
4693 ]) # LC_OSD_ADDON
4694
4695 #
4696 # LC_CONFIG_CRYPTO
4697 #
4698 # Check whether to enable Lustre client crypto
4699 #
4700 AC_DEFUN([LC_CONFIG_CRYPTO], [
4701 AC_MSG_CHECKING([whether to enable Lustre client crypto])
4702 AC_ARG_ENABLE([crypto],
4703         AS_HELP_STRING([--enable-crypto=yes|no|in-kernel],
4704                 [enable Lustre client crypto (default is yes), use 'in-kernel' to force use of in-kernel fscrypt instead of embedded llcrypt]),
4705         [], [enable_crypto="auto"])
4706 AS_IF([test "x$enable_crypto" != xno -a "x$enable_dist" = xno], [
4707         AC_MSG_RESULT(
4708         )
4709         LC_IS_ENCRYPTED
4710         LC_FSCRYPT_SUPPORT])
4711 AS_IF([test "x$enable_crypto" = xin-kernel], [
4712         AS_IF([test "x$has_fscrypt_support" = xyes], [
4713               AC_DEFINE(HAVE_LUSTRE_CRYPTO, 1, [Enable Lustre client crypto via in-kernel fscrypt])], [
4714               AC_MSG_ERROR([Lustre client crypto cannot be enabled via in-kernel fscrypt.])
4715               enable_crypto=no])],
4716         [AS_IF([test "x$has_is_encrypted" = xyes], [
4717               AC_DEFINE(HAVE_LUSTRE_CRYPTO, 1, [Enable Lustre client crypto via embedded llcrypt])
4718               AC_DEFINE(CONFIG_LL_ENCRYPTION, 1, [embedded llcrypt])
4719               AC_DEFINE(HAVE_FSCRYPT_DUMMY_CONTEXT_ENABLED, 1, [embedded llcrypt uses llcrypt_dummy_context_enabled()])
4720               enable_crypto="embedded-llcrypt"
4721               enable_llcrypt=yes], [
4722               AS_IF([test "x$enable_crypto" = xyes],
4723                     [AC_MSG_ERROR([Lustre client crypto cannot be enabled because of lack of encryption support in your kernel.])])
4724               AS_IF([test "x$enable_crypto" != xno -a "x$enable_dist" = xno],
4725                     [AC_MSG_WARN(Lustre client crypto cannot be enabled because of lack of encryption support in your kernel.)])
4726               enable_crypto=no])])
4727 AS_IF([test "x$enable_dist" != xno], [
4728         enable_crypto=yes
4729         enable_llcrypt=yes])
4730 AC_MSG_RESULT([$enable_crypto])
4731 ]) # LC_CONFIG_CRYPTO
4732
4733 #
4734 # LC_CONFIGURE
4735 #
4736 # other configure checks
4737 #
4738 AC_DEFUN([LC_CONFIGURE], [
4739 AC_MSG_NOTICE([Lustre core checks
4740 ==============================================================================])
4741
4742 # maximum MDS thread count
4743 LC_MDS_MAX_THREADS
4744
4745 # lustre/utils/gss/gss_util.c
4746 # lustre/utils/llog_reader.c
4747 # lustre/utils/create_iam.c
4748 # lustre/utils/libiam.c
4749 AC_CHECK_HEADERS([netdb.h endian.h])
4750 AC_CHECK_FUNCS([gethostbyname])
4751
4752 # lustre/utils/llverfs.c lustre/utils/libmount_utils_ldiskfs.c
4753 AC_CHECK_HEADERS([ext2fs/ext2fs.h], [], [
4754         AS_IF([test "x$enable_utils" = xyes -a "x$enable_ldiskfs" = xyes], [
4755                 AC_MSG_ERROR([
4756 ext2fs.h not found. Please install e2fsprogs development package.
4757                 ])
4758         ])
4759 ])
4760
4761 # lustre/tests/statx_test.c
4762 AC_CHECK_FUNCS([statx])
4763
4764 # lustre/utils/lfs.c
4765 AS_IF([test "$enable_dist" = "no"], [
4766                 AC_CHECK_LIB([z], [crc32], [
4767                                  AC_CHECK_HEADER([zlib.h], [], [
4768                                                  AC_MSG_ERROR([zlib.h not found.])])
4769                                  ], [
4770                                  AC_MSG_ERROR([
4771                 zlib library not found. Please install zlib development package.])
4772                 ])
4773 ])
4774
4775 SELINUX=""
4776
4777 AC_CHECK_LIB([selinux], [is_selinux_enabled],
4778         [AC_CHECK_HEADERS([selinux/selinux.h],
4779                         [SELINUX="-lselinux"
4780                         AC_DEFINE([HAVE_SELINUX], 1,
4781                                 [support for selinux ])],
4782                         [AC_MSG_WARN([
4783
4784 No libselinux-devel package found, unable to build selinux enabled tools
4785 ])
4786 ])],
4787         [AC_MSG_WARN([
4788
4789 No selinux package found, unable to build selinux enabled tools
4790 ])
4791 ])
4792 AC_SUBST(SELINUX)
4793
4794 AC_CHECK_LIB([keyutils], [add_key])
4795
4796 # Super safe df
4797 AC_MSG_CHECKING([whether to report minimum OST free space])
4798 AC_ARG_ENABLE([mindf],
4799         AS_HELP_STRING([--enable-mindf],
4800                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
4801         [], [enable_mindf="no"])
4802 AC_MSG_RESULT([$enable_mindf])
4803 AS_IF([test "$enable_mindf" = "yes"], [
4804         AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
4805         AC_SUBST(ENABLE_MINDF, yes)
4806 ], [
4807         AC_SUBST(ENABLE_MINDF, no)
4808 ])
4809
4810 AC_MSG_CHECKING([whether to randomly failing memory alloc])
4811 AC_ARG_ENABLE([fail_alloc],
4812         AS_HELP_STRING([--disable-fail-alloc],
4813                 [disable randomly alloc failure]),
4814         [], [enable_fail_alloc="yes"])
4815 AC_MSG_RESULT([$enable_fail_alloc])
4816 AS_IF([test "x$enable_fail_alloc" != xno], [
4817         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
4818         AC_SUBST(ENABLE_FAIL_ALLOC, yes)
4819 ], [
4820         AC_SUBST(ENABLE_FAIL_ALLOC, no)
4821 ])
4822
4823 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
4824 AC_ARG_ENABLE([invariants],
4825         AS_HELP_STRING([--enable-invariants],
4826                 [enable invariant checking (cpu intensive)]),
4827         [], [enable_invariants="no"])
4828 AC_MSG_RESULT([$enable_invariants])
4829 AS_IF([test "x$enable_invariants" = xyes], [
4830         AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
4831                   [enable invariant checking])
4832         AC_SUBST(ENABLE_INVARIANTS, yes)
4833 ], [
4834         AC_SUBST(ENABLE_INVARIANTS, no)
4835 ])
4836
4837 AC_MSG_CHECKING([whether to track references with lu_ref])
4838 AC_ARG_ENABLE([lu_ref],
4839         AS_HELP_STRING([--enable-lu_ref],
4840                 [enable lu_ref reference tracking code]),
4841         [], [enable_lu_ref="no"])
4842 AC_MSG_RESULT([$enable_lu_ref])
4843 AS_IF([test "x$enable_lu_ref" = xyes], [
4844         AC_DEFINE([CONFIG_LUSTRE_DEBUG_LU_REF], 1,
4845                   [enable lu_ref reference tracking code])
4846         AC_SUBST(ENABLE_LU_REF, yes)
4847 ], [
4848         AC_SUBST(ENABLE_LU_REF, no)
4849 ])
4850
4851 AC_MSG_CHECKING([whether to enable page state tracking])
4852 AC_ARG_ENABLE([pgstate-track],
4853         AS_HELP_STRING([--enable-pgstate-track],
4854                 [enable page state tracking]),
4855         [], [enable_pgstat_track="no"])
4856 AC_MSG_RESULT([$enable_pgstat_track])
4857 AS_IF([test "x$enable_pgstat_track" = xyes], [
4858         AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
4859                   [enable page state tracking code])
4860         AC_SUBST(ENABLE_PGSTAT_TRACK, yes)
4861 ], [
4862         AC_SUBST(ENABLE_PGSTAT_TRACK, no)
4863 ])
4864
4865 PKG_PROG_PKG_CONFIG
4866 AC_MSG_CHECKING([systemd unit file directory])
4867 AC_ARG_WITH([systemdsystemunitdir],
4868         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
4869                 [Directory for systemd service files])],
4870         [], [with_systemdsystemunitdir=auto])
4871 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
4872         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
4873         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
4874                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
4875                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
4876                 with_systemdsystemunitdir=no],
4877         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
4878 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
4879         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
4880 AC_MSG_RESULT([$with_systemdsystemunitdir])
4881
4882 AC_MSG_CHECKING([bash-completion directory])
4883 AC_ARG_WITH([bash-completion-dir],
4884         AS_HELP_STRING([--with-bash-completion-dir[=PATH]],
4885                 [Install the bash auto-completion script in this directory.]),
4886         [],
4887         [with_bash_completion_dir=yes])
4888 AS_IF([test "x$with_bash_completion_dir" = "xyes"], [
4889         BASH_COMPLETION_DIR="`pkg-config --variable=completionsdir bash-completion`"
4890         AS_IF([test "x$BASH_COMPLETION_DIR" = "x"], [
4891                 [BASH_COMPLETION_DIR="/usr/share/bash-completion/completions"]
4892         ])
4893 ], [
4894         BASH_COMPLETION_DIR="$with_bash_completion_dir"
4895 ])
4896 AC_SUBST([BASH_COMPLETION_DIR])
4897 AC_MSG_RESULT([$BASH_COMPLETION_DIR])
4898 ]) # LC_CONFIGURE
4899
4900 #
4901 # LC_CONDITIONALS
4902 #
4903 # AM_CONDITIONALS for lustre
4904 #
4905 AC_DEFUN([LC_CONDITIONALS], [
4906 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
4907 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
4908 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
4909 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
4910 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
4911 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
4912 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
4913 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
4914 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
4915 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
4916 AM_CONDITIONAL(ENABLE_BASH_COMPLETION, test "x$with_bash_completion_dir" != "xno")
4917 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
4918 AM_CONDITIONAL(SELINUX, test "$SELINUX" = "-lselinux")
4919 AM_CONDITIONAL(GETSEPOL, test x$enable_getsepol = xyes)
4920 AM_CONDITIONAL(LLCRYPT, test x$enable_llcrypt = xyes)
4921 AM_CONDITIONAL(LIBAIO, test x$enable_libaio = xyes)
4922 ]) # LC_CONDITIONALS
4923
4924 #
4925 # LC_CONFIG_FILES
4926 #
4927 # files that should be generated with AC_OUTPUT
4928 #
4929 AC_DEFUN([LC_CONFIG_FILES],
4930 [AC_CONFIG_FILES([
4931 lustre/Makefile
4932 lustre/autoMakefile
4933 lustre/autoconf/Makefile
4934 lustre/conf/Makefile
4935 lustre/conf/resource/Makefile
4936 lustre/doc/Makefile
4937 lustre/include/Makefile
4938 lustre/include/lustre/Makefile
4939 lustre/include/uapi/linux/lustre/Makefile
4940 lustre/kernel_patches/targets/5.14-rhel9.2.target
4941 lustre/kernel_patches/targets/5.14-rhel9.1.target
4942 lustre/kernel_patches/targets/5.14-rhel9.0.target
4943 lustre/kernel_patches/targets/4.18-rhel8.8.target
4944 lustre/kernel_patches/targets/4.18-rhel8.7.target
4945 lustre/kernel_patches/targets/4.18-rhel8.6.target
4946 lustre/kernel_patches/targets/4.18-rhel8.5.target
4947 lustre/kernel_patches/targets/4.18-rhel8.4.target
4948 lustre/kernel_patches/targets/4.18-rhel8.3.target
4949 lustre/kernel_patches/targets/4.18-rhel8.2.target
4950 lustre/kernel_patches/targets/4.18-rhel8.1.target
4951 lustre/kernel_patches/targets/4.18-rhel8.target
4952 lustre/kernel_patches/targets/3.10-rhel7.9.target
4953 lustre/kernel_patches/targets/3.10-rhel7.8.target
4954 lustre/kernel_patches/targets/3.10-rhel7.7.target
4955 lustre/kernel_patches/targets/3.10-rhel7.6.target
4956 lustre/kernel_patches/targets/3.10-rhel7.5.target
4957 lustre/kernel_patches/targets/4.14-rhel7.5.target
4958 lustre/kernel_patches/targets/4.14-rhel7.6.target
4959 lustre/kernel_patches/targets/4.12-sles12sp4.target
4960 lustre/kernel_patches/targets/4.12-sles12sp5.target
4961 lustre/kernel_patches/targets/4.12-sles15sp1.target
4962 lustre/kernel_patches/targets/5.3-sles15sp2.target
4963 lustre/kernel_patches/targets/5.3-sles15sp3.target
4964 lustre/kernel_patches/targets/5.14-sles15sp4.target
4965 lustre/kernel_patches/targets/3.x-fc18.target
4966 lustre/kernel_patches/targets/5.10-oe2203.target
4967 lustre/kernel_patches/targets/5.10-oe2203sp1.target
4968 lustre/kernel_patches/targets/5.10-oe2203sp2.target
4969 lustre/ldlm/Makefile
4970 lustre/ldlm/autoMakefile
4971 lustre/ec/autoMakefile
4972 lustre/ec/Makefile
4973 lustre/fid/Makefile
4974 lustre/fid/autoMakefile
4975 lustre/llite/Makefile
4976 lustre/llite/autoMakefile
4977 lustre/lov/Makefile
4978 lustre/lov/autoMakefile
4979 lustre/mdc/Makefile
4980 lustre/mdc/autoMakefile
4981 lustre/lmv/Makefile
4982 lustre/lmv/autoMakefile
4983 lustre/lfsck/Makefile
4984 lustre/lfsck/autoMakefile
4985 lustre/mdt/Makefile
4986 lustre/mdt/autoMakefile
4987 lustre/mdd/Makefile
4988 lustre/mdd/autoMakefile
4989 lustre/fld/Makefile
4990 lustre/fld/autoMakefile
4991 lustre/obdclass/Makefile
4992 lustre/obdclass/autoMakefile
4993 lustre/obdecho/Makefile
4994 lustre/obdecho/autoMakefile
4995 lustre/ofd/Makefile
4996 lustre/ofd/autoMakefile
4997 lustre/osc/Makefile
4998 lustre/osc/autoMakefile
4999 lustre/ost/Makefile
5000 lustre/ost/autoMakefile
5001 lustre/osd-ldiskfs/Makefile
5002 lustre/osd-ldiskfs/autoMakefile
5003 lustre/osd-zfs/Makefile
5004 lustre/osd-zfs/autoMakefile
5005 lustre/mgc/Makefile
5006 lustre/mgc/autoMakefile
5007 lustre/mgs/Makefile
5008 lustre/mgs/autoMakefile
5009 lustre/target/Makefile
5010 lustre/target/autoMakefile
5011 lustre/ptlrpc/Makefile
5012 lustre/ptlrpc/autoMakefile
5013 lustre/ptlrpc/gss/Makefile
5014 lustre/ptlrpc/gss/autoMakefile
5015 lustre/quota/Makefile
5016 lustre/quota/autoMakefile
5017 lustre/scripts/Makefile
5018 lustre/scripts/systemd/Makefile
5019 lustre/tests/Makefile
5020 lustre/tests/mpi/Makefile
5021 lustre/tests/iabf/Makefile
5022 lustre/tests/lutf/Makefile
5023 lustre/tests/lutf/src/Makefile
5024 lustre/tests/kernel/Makefile
5025 lustre/tests/kernel/autoMakefile
5026 lustre/utils/Makefile
5027 lustre/utils/gss/Makefile
5028 lustre/osp/Makefile
5029 lustre/osp/autoMakefile
5030 lustre/lod/Makefile
5031 lustre/lod/autoMakefile
5032 ])
5033 ]) # LC_CONFIG_FILES