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_STACK_SIZE
  70 #
  71 # Ensure the stack size is at least 8k in Lustre server (all kernels)
  72 #
  73 AC_DEFUN([LC_STACK_SIZE], [
  74 LB_CHECK_COMPILE([if stack size is at least 8k],
  75 stack_size_8k, [
  76         #include <linux/thread_info.h>
  77 ], [
  78         #if THREAD_SIZE < 8192
  79         #error "stack size < 8192"
  80         #endif
  81 ], [], [AC_MSG_ERROR([
  82
  83 Lustre requires that Linux is configured with at least a 8KB stack.
  84 ])])
  85 ]) # LC_STACK_SIZE
  86
  87 #
  88 # LC_MDS_MAX_THREADS
  89 #
  90 # Allow the user to set the MDS thread upper limit
  91 #
  92 AC_DEFUN([LC_MDS_MAX_THREADS], [
  93 AC_MSG_CHECKING([for maximum number of MDS threads])
  94 AC_ARG_WITH([mds_max_threads],
  95         AC_HELP_STRING([--with-mds-max-threads=count],
  96                 [maximum threads available on the MDS: (default=512)]),
  97         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
  98                 [maximum number of MDS threads])])
  99 AC_MSG_RESULT([$with_mds_max_threads])
 100 ]) # LC_MDS_MAX_THREADS
 101
 102 #
 103 # LC_CONFIG_PINGER
 104 #
 105 # the pinger is temporary, until we have the recovery node in place
 106 #
 107 AC_DEFUN([LC_CONFIG_PINGER], [
 108 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 109 AC_ARG_ENABLE([pinger],
 110         AC_HELP_STRING([--disable-pinger],
 111                 [disable recovery pinger support]),
 112         [], [enable_pinger="yes"])
 113 AC_MSG_RESULT([$enable_pinger])
 114 AS_IF([test "x$enable_pinger" != xno],
 115         [AC_DEFINE(CONFIG_LUSTRE_FS_PINGER, 1,[Use the Pinger])])
 116 ]) # LC_CONFIG_PINGER
 117
 118 #
 119 # LC_CONFIG_CHECKSUM
 120 #
 121 # do checksum of bulk data between client and OST
 122 #
 123 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 124 AC_MSG_CHECKING([whether to enable data checksum support])
 125 AC_ARG_ENABLE([checksum],
 126         AC_HELP_STRING([--disable-checksum],
 127                 [disable data checksum support]),
 128         [], [enable_checksum="yes"])
 129 AC_MSG_RESULT([$enable_checksum])
 130 AS_IF([test "x$enable_checksum" != xno],
 131         [AC_DEFINE(ENABLE_CHECKSUM, 1, [do data checksums])])
 132 ]) # LC_CONFIG_CHECKSUM
 133
 134 #
 135 # LC_CONFIG_FLOCK
 136 #
 137 # enable distributed flock by default
 138 #
 139 AC_DEFUN([LC_CONFIG_FLOCK], [
 140 AC_MSG_CHECKING([whether to enable flock by default])
 141 AC_ARG_ENABLE([flock],
 142         AC_HELP_STRING([--disable-flock],
 143                 [disable flock by default]),
 144         [], [enable_flock="yes"])
 145 AC_MSG_RESULT([$enable_flock])
 146 AS_IF([test "x$enable_flock" != xno],
 147         [AC_DEFINE(ENABLE_FLOCK, 1, [enable flock by default])])
 148 ]) # LC_CONFIG_FLOCK
 149
 150 #
 151 # LC_CONFIG_HEALTH_CHECK_WRITE
 152 #
 153 # Turn off the actual write to the disk
 154 #
 155 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 156 AC_MSG_CHECKING([whether to enable a write with the health check])
 157 AC_ARG_ENABLE([health_write],
 158         AC_HELP_STRING([--enable-health_write],
 159                 [enable disk writes when doing health check]),
 160         [], [enable_health_write="no"])
 161 AC_MSG_RESULT([$enable_health_write])
 162 AS_IF([test "x$enable_health_write" != xno],
 163         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 164 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 165
 166 #
 167 # LC_CONFIG_LRU_RESIZE
 168 #
 169 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 170 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 171 AC_ARG_ENABLE([lru_resize],
 172         AC_HELP_STRING([--enable-lru-resize],
 173                 [enable lru resize support]),
 174         [], [enable_lru_resize="yes"])
 175 AC_MSG_RESULT([$enable_lru_resize])
 176 AS_IF([test "x$enable_lru_resize" != xno],
 177         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 178 ]) # LC_CONFIG_LRU_RESIZE
 179
 180 #
 181 # LC_QUOTA_CONFIG
 182 #
 183 # Quota support. The kernel must support CONFIG_QUOTA.
 184 #
 185 AC_DEFUN([LC_QUOTA_CONFIG], [
 186 LB_CHECK_CONFIG_IM([QUOTA], [],
 187         [AC_MSG_ERROR([
 188
 189 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 190 ])])
 191 ]) # LC_QUOTA_CONFIG
 192
 193 #
 194 # LC_CONFIG_FHANDLE
 195 #
 196 # fhandle kernel support for open_by_handle_at() and name_to_handle_at()
 197 # system calls. The kernel must support CONFIG_FHANDLE.
 198 #
 199 AC_DEFUN([LC_CONFIG_FHANDLE], [
 200 LB_CHECK_CONFIG_IM([FHANDLE], [],
 201         [AC_MSG_ERROR([
 202
 203 Lustre fid handling requires that CONFIG_FHANDLE is enabled in your kernel.
 204 ])])
 205 ]) # LC_CONFIG_FHANDLE
 206
 207 #
 208 # LC_POSIX_ACL_CONFIG
 209 #
 210 # POSIX ACL support.
 211 #
 212 AC_DEFUN([LC_POSIX_ACL_CONFIG], [
 213 LB_CHECK_CONFIG_IM([FS_POSIX_ACL],
 214         [AC_DEFINE(CONFIG_LUSTRE_FS_POSIX_ACL, 1, [Enable POSIX acl])
 215 ], [ ])
 216 ]) # LC_POSIX_ACL_CONFIG
 217
 218 LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 219                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 220
 221 #
 222 # LC_CONFIG_GSS_KEYRING
 223 #
 224 # default 'auto', tests for dependencies, if found, enables;
 225 # only called if gss is enabled
 226 #
 227 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 228 AC_MSG_CHECKING([whether to enable gss keyring backend])
 229 AC_ARG_ENABLE([gss_keyring],
 230         [AC_HELP_STRING([--disable-gss-keyring],
 231                 [disable gss keyring backend])],
 232         [], [enable_gss_keyring="auto"])
 233 AC_MSG_RESULT([$enable_gss_keyring])
 234 AS_IF([test "x$enable_gss_keyring" != xno], [
 235         LB_CHECK_CONFIG_IM([KEYS], [], [
 236                 gss_keyring_conf_test="fail"
 237                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 238
 239         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 240                 gss_keyring_conf_test="fail"
 241                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 242
 243         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 244                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 245                         [Define this if you enable gss keyring backend])
 246                 enable_gss_keyring="yes"
 247         ], [
 248                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 249                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 250                 ])
 251         ])
 252 ])
 253 ]) # LC_CONFIG_GSS_KEYRING
 254
 255 #
 256 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 257 #
 258 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 259 #
 260 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 261 LB_CHECK_COMPILE([if 'key_type->instantiate' has two args],
 262 key_type_instantiate_2args, [
 263         #include <linux/key-type.h>
 264 ],[
 265         ((struct key_type *)0)->instantiate(0, NULL);
 266 ],[
 267         AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 268                 [key_type->instantiate has two args])
 269 ])
 270 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 271
 272 #
 273 # LC_CONFIG_SUNRPC
 274 #
 275 AC_DEFUN([LC_CONFIG_SUNRPC], [
 276 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 277         AS_IF([test "x$sunrpc_required" = xyes], [
 278                 AC_MSG_ERROR([
 279
 280 kernel SUNRPC support is required by using GSS.
 281 ])
 282         ])])
 283 ]) # LC_CONFIG_SUNRPC
 284
 285 #
 286 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 287 #
 288 # Build gss and related tools of Lustre. Currently both kernel and user space
 289 # parts are depend on linux platform.
 290 #
 291 AC_DEFUN([LC_CONFIG_GSS], [
 292 AC_MSG_CHECKING([whether to enable gss support])
 293 AC_ARG_ENABLE([gss],
 294         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 295         [], [enable_gss="auto"])
 296 AC_MSG_RESULT([$enable_gss])
 297
 298 AC_ARG_VAR([TEST_JOBS],
 299     [simultaneous jobs during configure (defaults to $(nproc))])
 300 if test "x$ac_cv_env_TEST_JOBS_set" != "xset"; then
 301         TEST_JOBS=${TEST_JOBS:-$(nproc)}
 302 fi
 303 AC_SUBST(TEST_JOBS)
 304
 305 AC_ARG_VAR([TEST_DIR],
 306     [location of temporary parallel configure tests (defaults to $PWD/lb2)])
 307         TEST_DIR=${TEST_DIR:-$PWD/_lpb}
 308 AC_SUBST(TEST_DIR)
 309
 310 AS_IF([test "x$enable_gss" != xno], [
 311         LC_CONFIG_GSS_KEYRING
 312         LC_KEY_TYPE_INSTANTIATE_2ARGS
 313         sunrpc_required=$enable_gss
 314         LC_CONFIG_SUNRPC
 315         sunrpc_required="no"
 316
 317         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 318                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 319         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 320                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 321         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 322                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 323         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 324                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 325
 326         require_krb5=$enable_gss
 327         AC_KERBEROS_V5
 328         require_krb5="no"
 329
 330         AS_IF([test -n "$KRBDIR"], [
 331                 gss_conf_test="success"
 332         ], [
 333                 gss_conf_test="failure"
 334         ])
 335
 336         AS_IF([test "x$gss_conf_test" = xsuccess && test "x$enable_gss" != xno], [
 337                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 338                 enable_gss="yes"
 339         ], [
 340                 enable_gss_keyring="no"
 341                 enable_gss="no"
 342         ])
 343
 344         enable_ssk=$enable_gss
 345 ], [
 346         enable_gss_keyring="no"
 347 ])
 348 ]) # LC_CONFIG_GSS
 349
 350 # LC_OPENSSL_SSK
 351 #
 352 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 353 AC_DEFUN([LC_OPENSSL_SSK], [
 354 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 355 AS_IF([test "x$enable_ssk" != xno], [
 356 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 357         #include <openssl/hmac.h>
 358         #include <openssl/evp.h>
 359
 360         int main(void) {
 361                 int rc;
 362                 rc = HMAC_Init_ex(NULL, "test", 4, EVP_md_null(), NULL);
 363         }
 364 ])],[AC_DEFINE(HAVE_OPENSSL_SSK, 1,
 365                [OpenSSL HMAC functions needed for SSK])],
 366         [enable_ssk="no"])
 367 ])
 368 AC_MSG_RESULT([$enable_ssk])
 369 ]) # LC_OPENSSL_SSK
 370
 371 # LC_OPENSSL_GETSEPOL
 372 #
 373 # OpenSSL is needed for l_getsepol
 374 AC_DEFUN([LC_OPENSSL_GETSEPOL], [
 375 AC_MSG_CHECKING([whether openssl-devel is present])
 376 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 377         #include <openssl/evp.h>
 378
 379         int main(void) {
 380                 EVP_MD_CTX *mdctx = EVP_MD_CTX_create();
 381         }
 382 ])],[
 383         AC_DEFINE(HAVE_OPENSSL_GETSEPOL, 1, [openssl-devel is present])
 384         enable_getsepol="yes"
 385
 386 ],[
 387         enable_getsepol="no"
 388         AC_MSG_WARN([
 389
 390 No openssl-devel headers found, unable to build l_getsepol and SELinux status checking
 391 ])
 392 ])
 393 AC_MSG_RESULT([$enable_getsepol])
 394 ]) # LC_OPENSSL_GETSEPOL
 395
 396 # LC_HAVE_LIBAIO
 397 AC_DEFUN([LC_HAVE_LIBAIO], [
 398         AC_CHECK_HEADER([libaio.h],
 399                 enable_libaio="yes",
 400                 AC_MSG_WARN([libaio is not installed in the system]))
 401 ]) # LC_HAVE_LIBAIO
 402
 403 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
 404 LB_CHECK_COMPILE([if get_projid exists],
 405 get_projid, [
 406         struct inode;
 407         #include <linux/quota.h>
 408 ],[
 409         struct dquot_operations ops = { };
 410
 411         ops.get_projid(NULL, NULL);
 412 ],[
 413         AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
 414                 [get_projid function exists])
 415 ])
 416 ]) # LC_HAVE_PROJECT_QUOTA
 417
 418 #
 419 # LC_INVALIDATE_RANGE
 420 #
 421 # 3.11 invalidatepage requires the length of the range to invalidate
 422 #
 423 AC_DEFUN([LC_INVALIDATE_RANGE], [
 424 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
 425 address_space_ops_invalidatepage_3args, [
 426         #include <linux/fs.h>
 427 ],[
 428         struct address_space_operations a_ops;
 429         a_ops.invalidatepage(NULL, 0, 0);
 430 ],[
 431         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
 432                 [address_space_operations.invalidatepage needs 3 arguments])
 433 ])
 434 ]) # LC_INVALIDATE_RANGE
 435
 436 #
 437 # LC_HAVE_DIR_CONTEXT
 438 #
 439 # 3.11 readdir now takes the new struct dir_context
 440 #
 441 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
 442 LB_CHECK_COMPILE([if 'dir_context' exist],
 443 dir_context, [
 444         #include <linux/fs.h>
 445 ],[
 446 #ifdef FMODE_KABI_ITERATE
 447 #error "back to use readdir in kabi_extand mode"
 448 #else
 449         struct dir_context ctx;
 450
 451         ctx.pos = 0;
 452 #endif
 453 ],[
 454         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
 455                 [dir_context exist])
 456 ])
 457 ]) # LC_HAVE_DIR_CONTEXT
 458
 459 #
 460 # LC_D_COMPARE_5ARGS
 461 #
 462 # 3.11 dentry_operations.d_compare() taken 5 arguments.
 463 #
 464 AC_DEFUN([LC_D_COMPARE_5ARGS], [
 465 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
 466 d_compare_5args, [
 467         #include <linux/dcache.h>
 468 ],[
 469         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
 470 ],[
 471         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
 472                 [d_compare need 5 arguments])
 473 ])
 474 ]) # LC_D_COMPARE_5ARGS
 475
 476 #
 477 # LC_HAVE_DCOUNT
 478 #
 479 # 3.11 need to access d_count to get dentry reference count
 480 #
 481 AC_DEFUN([LC_HAVE_DCOUNT], [
 482 LB_CHECK_COMPILE([if 'd_count' exists],
 483 d_count, [
 484         #include <linux/dcache.h>
 485 ],[
 486         struct dentry de = { };
 487         int count;
 488
 489         count = d_count(&de);
 490 ],[
 491         AC_DEFINE(HAVE_D_COUNT, 1,
 492                 [d_count exist])
 493 ])
 494 ]) # LC_HAVE_DCOUNT
 495
 496 #
 497 # LC_PID_NS_FOR_CHILDREN
 498 #
 499 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
 500 #
 501 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
 502 LB_CHECK_COMPILE([if 'struct nsproxy' has 'pid_ns_for_children'],
 503 pid_ns_for_children, [
 504         #include <linux/nsproxy.h>
 505 ],[
 506         struct nsproxy ns;
 507         ns.pid_ns_for_children = NULL;
 508 ],[
 509         AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
 510                   ['struct nsproxy' has 'pid_ns_for_children'])
 511 ])
 512 ]) # LC_PID_NS_FOR_CHILDREN
 513
 514 #
 515 # LC_OLDSIZE_TRUNCATE_PAGECACHE
 516 #
 517 # 3.12 truncate_pagecache without oldsize parameter
 518 #
 519 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
 520 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
 521 truncate_pagecache_old_size, [
 522         #include <linux/mm.h>
 523 ],[
 524         truncate_pagecache(NULL, 0, 0);
 525 ],[
 526         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
 527                 [with oldsize])
 528 ])
 529 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
 530
 531 #
 532 # LC_PTR_ERR_OR_ZERO
 533 #
 534 # For some reason SLES11SP4 is missing the PTR_ERR_OR_ZERO macro
 535 # It was added to linux kernel 3.12
 536 #
 537 AC_DEFUN([LC_PTR_ERR_OR_ZERO_MISSING], [
 538 LB_CHECK_COMPILE([if 'PTR_ERR_OR_ZERO' is missing],
 539 is_err_or_null, [
 540         #include <linux/err.h>
 541 ],[
 542         if (PTR_ERR_OR_ZERO(NULL)) return 0;
 543 ],[
 544         AC_DEFINE(HAVE_PTR_ERR_OR_ZERO, 1,
 545                 ['PTR_ERR_OR_ZERO' exist])
 546 ])
 547 ]) # LC_PTR_ERR_OR_ZERO_MISSING
 548
 549 #
 550 # LC_HAVE_DENTRY_D_U_D_ALIAS
 551 #
 552 # 3.11 kernel moved d_alias to the union d_u in struct dentry
 553 #
 554 # Some distros move d_alias to d_u but it is still a struct list
 555 #
 556 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
 557 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
 558         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
 559         d_alias, [
 560                 #include <linux/list.h>
 561                 #include <linux/dcache.h>
 562         ],[
 563                 struct dentry de;
 564                 INIT_LIST_HEAD(&de.d_u.d_alias);
 565         ],[
 566                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
 567                         [list dentry.d_u.d_alias exist])
 568         ])
 569 ],[
 570         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
 571         d_alias, [
 572                 #include <linux/list.h>
 573                 #include <linux/dcache.h>
 574         ],[
 575                 struct dentry de;
 576                 INIT_HLIST_NODE(&de.d_u.d_alias);
 577         ],[
 578                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
 579                         [hlist dentry.d_u.d_alias exist])
 580         ])
 581 ])
 582 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
 583
 584 #
 585 # LC_HAVE_DENTRY_D_CHILD
 586 #
 587 # 3.11 kernel d_child has been moved out of the union d_u
 588 # in struct dentry
 589 #
 590 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
 591 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
 592 d_child, [
 593         #include <linux/list.h>
 594         #include <linux/dcache.h>
 595 ],[
 596         struct dentry de;
 597         INIT_LIST_HEAD(&de.d_child);
 598 ],[
 599         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
 600                 [dentry.d_child exist])
 601 ])
 602 ]) # LC_HAVE_DENTRY_D_CHILD
 603
 604 #
 605 # LC_KIOCB_KI_LEFT
 606 #
 607 # 3.12 ki_left removed from struct kiocb
 608 #
 609 AC_DEFUN([LC_KIOCB_KI_LEFT], [
 610 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
 611 kiocb_ki_left, [
 612         #include <linux/aio.h>
 613 ],[
 614         ((struct kiocb*)0)->ki_left = 0;
 615 ],[
 616         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
 617                 [ki_left exist])
 618 ])
 619 ]) # LC_KIOCB_KI_LEFT
 620
 621 #
 622 # LC_VFS_RENAME_5ARGS
 623 #
 624 # 3.13 has vfs_rename with 5 args
 625 #
 626 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
 627 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
 628 vfs_rename_5args, [
 629         #include <linux/fs.h>
 630 ],[
 631         vfs_rename(NULL, NULL, NULL, NULL, NULL);
 632 ], [
 633         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
 634                 [kernel has vfs_rename with 5 args])
 635 ])
 636 ]) # LC_VFS_RENAME_5ARGS
 637
 638 #
 639 # LC_VFS_UNLINK_3ARGS
 640 #
 641 # 3.13 has vfs_unlink with 3 args
 642 #
 643 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
 644 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
 645 vfs_unlink_3args, [
 646         #include <linux/fs.h>
 647 ],[
 648         vfs_unlink(NULL, NULL, NULL);
 649 ], [
 650         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
 651                 [kernel has vfs_unlink with 3 args])
 652 ])
 653 ]) # LC_VFS_UNLINK_3ARGS
 654
 655 # LC_HAVE_D_IS_POSITIVE
 656 #
 657 # Kernel version 3.13 b18825a7c8e37a7cf6abb97a12a6ad71af160de7
 658 # d_is_positive is added
 659 #
 660 AC_DEFUN([LC_HAVE_D_IS_POSITIVE], [
 661 LB_CHECK_COMPILE([if 'd_is_positive' exist],
 662 d_is_positive, [
 663         #include <linux/dcache.h>
 664 ],[
 665         d_is_positive(NULL);
 666 ],[
 667         AC_DEFINE(HAVE_D_IS_POSITIVE, 1,
 668                 ['d_is_positive' is available])
 669 ])
 670 ]) # LC_HAVE_D_IS_POSITIVE
 671
 672 #
 673 # LC_HAVE_BVEC_ITER
 674 #
 675 # 3.14 move some of its data in struct bio into the new
 676 # struct bvec_iter
 677 #
 678 AC_DEFUN([LC_HAVE_BVEC_ITER], [
 679 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
 680 have_bvec_iter, [
 681         #include <linux/bio.h>
 682 ],[
 683         struct bvec_iter iter;
 684
 685         iter.bi_bvec_done = 0;
 686 ], [
 687         AC_DEFINE(HAVE_BVEC_ITER, 1,
 688                 [kernel has struct bvec_iter])
 689 ])
 690 ]) # LC_HAVE_BVEC_ITER
 691
 692 #
 693 # LC_IOP_SET_ACL
 694 #
 695 # 3.14 adds set_acl method to inode_operations
 696 # see kernel commit 893d46e443346370cd4ea81d9d35f72952c62a37
 697 #
 698 AC_DEFUN([LC_IOP_SET_ACL], [
 699 LB_CHECK_COMPILE([if 'inode_operations' has '.set_acl' member function],
 700 inode_ops_set_acl, [
 701         #include <linux/fs.h>
 702 ],[
 703         struct inode_operations iop;
 704         iop.set_acl = NULL;
 705 ],[
 706         AC_DEFINE(HAVE_IOP_SET_ACL, 1,
 707                 [inode_operations has .set_acl member function])
 708 ])
 709 ]) # LC_IOP_SET_ACL
 710
 711 #
 712 # LC_HAVE_TRUNCATE_IPAGE_FINAL
 713 #
 714 # 3.14 bring truncate_inode_pages_final for evict_inode
 715 #
 716 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
 717 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
 718 truncate_ipages_final, [
 719         #include <linux/mm.h>
 720 ],[
 721         truncate_inode_pages_final(NULL);
 722 ], [
 723         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
 724                 [kernel has truncate_inode_pages_final])
 725 ])
 726 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
 727
 728 #
 729 # LC_IOPS_RENAME_WITH_FLAGS
 730 #
 731 # 3.14 has inode_operations->rename with 5 args
 732 # commit 520c8b16505236fc82daa352e6c5e73cd9870cff
 733 #
 734 AC_DEFUN([LC_IOPS_RENAME_WITH_FLAGS], [
 735 LB_CHECK_COMPILE([if 'inode_operations->rename' taken flags as argument],
 736 iops_rename_with_flags, [
 737         #include <linux/fs.h>
 738 ],[
 739         struct inode *i1 = NULL, *i2 = NULL;
 740         struct dentry *d1 = NULL, *d2 = NULL;
 741         int rc;
 742         rc = ((struct inode_operations *)0)->rename(i1, d1, i2, d2, 0);
 743 ], [
 744         AC_DEFINE(HAVE_IOPS_RENAME_WITH_FLAGS, 1,
 745                 [inode_operations->rename need flags as argument])
 746 ])
 747 ]) # LC_IOPS_RENAME_WITH_FLAGS
 748
 749 #
 750 # LC_VFS_RENAME_6ARGS
 751 #
 752 # 3.15 has vfs_rename with 6 args
 753 #
 754 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
 755 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
 756 vfs_rename_6args, [
 757         #include <linux/fs.h>
 758 ],[
 759         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
 760 ], [
 761         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
 762                 [kernel has vfs_rename with 6 args])
 763 ])
 764 ]) # LC_VFS_RENAME_6ARGS
 765
 766 #
 767 # LC_DIRECTIO_USE_ITER
 768 #
 769 # 3.16 kernel changes direct IO to use iov_iter
 770 #
 771 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
 772 LB_CHECK_COMPILE([if direct IO uses iov_iter],
 773 direct_io_iter, [
 774         #include <linux/fs.h>
 775 ],[
 776         struct address_space_operations ops = { };
 777         struct iov_iter *iter = NULL;
 778         loff_t offset = 0;
 779
 780         ops.direct_IO(0, NULL, iter, offset);
 781 ],[
 782         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
 783                 [direct IO uses iov_iter])
 784 ])
 785 ]) # LC_DIRECTIO_USE_ITER
 786
 787 #
 788 # LC_HAVE_IOV_ITER_INIT_DIRECTION
 789 #
 790 #
 791 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
 792 #      changed iov_iter_init api to start accepting a tag
 793 #      that defines if its a read or write operation
 794 #
 795 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
 796 tmp_flags="$EXTRA_KCFLAGS"
 797 EXTRA_KCFLAGS="-Werror"
 798 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
 799 iter_init, [
 800         #include <linux/uio.h>
 801         #include <linux/fs.h>
 802 ],[
 803         const struct iovec *iov = NULL;
 804
 805         iov_iter_init(NULL, READ, iov, 1, 0);
 806 ],[
 807         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
 808                 [iov_iter_init handles directional tag])
 809 ])
 810 EXTRA_KCFLAGS="$tmp_flags"
 811 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
 812
 813 #
 814 # LC_HAVE_IOV_ITER_TRUNCATE
 815 #
 816 #
 817 # 3.16 introduces a new API iov_iter_truncate()
 818 #
 819 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
 820 tmp_flags="$EXTRA_KCFLAGS"
 821 EXTRA_KCFLAGS="-Werror"
 822 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
 823 iter_truncate, [
 824         #include <linux/uio.h>
 825         #include <linux/fs.h>
 826 ],[
 827         struct iov_iter *i = NULL;
 828
 829         iov_iter_truncate(i, 0);
 830 ],[
 831         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
 832 ])
 833 EXTRA_KCFLAGS="$tmp_flags"
 834 ]) # LC_HAVE_IOV_ITER_TRUNCATE
 835
 836 #
 837 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
 838 #
 839 # 3.16 introduces [read|write]_iter to struct file_operations
 840 #
 841 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
 842 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
 843 file_function_iter, [
 844         #include <linux/fs.h>
 845 ],[
 846         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
 847         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
 848 ],[
 849         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
 850                 [file_operations.[read|write]_iter functions exist])
 851 ])
 852 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
 853
 854 #
 855 # LC_HAVE_INTERVAL_BLK_INTEGRITY
 856 #
 857 # 3.17 replace sector_size with interval in struct blk_integrity
 858 #
 859 AC_DEFUN([LC_HAVE_INTERVAL_BLK_INTEGRITY], [
 860 LB_CHECK_COMPILE([if 'blk_integrity.interval' exist],
 861 interval_blk_integrity, [
 862         #include <linux/blkdev.h>
 863 ],[
 864         ((struct blk_integrity *)0)->interval = 0;
 865 ],[
 866         AC_DEFINE(HAVE_INTERVAL_BLK_INTEGRITY, 1,
 867                 [blk_integrity.interval exist])
 868 ])
 869 ]) # LC_HAVE_INTERVAL_BLK_INTEGRITY
 870
 871 #
 872 # LC_KEY_MATCH_DATA
 873 #
 874 # 3.17  replaces key_type::match with match_preparse
 875 #       and has new struct key_match_data
 876 #
 877 AC_DEFUN([LC_KEY_MATCH_DATA], [
 878 LB_CHECK_COMPILE([if struct key_match field exist],
 879 key_match, [
 880         #include <linux/key-type.h>
 881 ],[
 882         struct key_match_data data;
 883
 884         data.raw_data = NULL;
 885 ],[
 886         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
 887                 [struct key_match_data exist])
 888 ])
 889 ]) # LC_KEY_MATCH_DATA
 890
 891 #
 892 # LC_NFS_FILLDIR_USE_CTX
 893 #
 894 # 3.18 kernel moved from void cookie to struct dir_context
 895 #
 896 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
 897 tmp_flags="$EXTRA_KCFLAGS"
 898 EXTRA_KCFLAGS="-Werror"
 899 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
 900 filldir_ctx, [
 901         #include <linux/fs.h>
 902 ],[
 903         int filldir(struct dir_context *ctx, const char* name,
 904                     int i, loff_t off, u64 tmp, unsigned temp)
 905         {
 906                 return 0;
 907         }
 908
 909         struct dir_context ctx = {
 910                 .actor = filldir,
 911         };
 912
 913         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
 914 ],[
 915         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
 916                 [filldir_t needs struct dir_context as argument])
 917 ])
 918 EXTRA_KCFLAGS="$tmp_flags"
 919 ]) # LC_NFS_FILLDIR_USE_CTX
 920
 921 #
 922 # LC_PERCPU_COUNTER_INIT
 923 #
 924 # 3.18  For kernels 3.18 and after percpu_counter_init starts
 925 #       to pass a GFP_* memory allocation flag for internal
 926 #       memory allocation purposes.
 927 #
 928 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
 929 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
 930 percpu_counter_init, [
 931         #include <linux/percpu_counter.h>
 932 ],[
 933         percpu_counter_init(NULL, 0, GFP_KERNEL);
 934 ],[
 935         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
 936                 [percpu_counter_init uses GFP_* flag])
 937 ])
 938 ]) # LC_PERCPU_COUNTER_INIT
 939
 940 #
 941 # LC_KIOCB_HAS_NBYTES
 942 #
 943 # 3.19 kernel removed ki_nbytes from struct kiocb
 944 #
 945 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
 946 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
 947 ki_nbytes, [
 948         #include <linux/fs.h>
 949 ],[
 950         struct kiocb iocb = { };
 951
 952         iocb.ki_nbytes = 0;
 953 ],[
 954         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
 955 ])
 956 ]) # LC_KIOCB_HAS_NBYTES
 957
 958 #
 959 # LC_HAVE_DQUOT_QC_DQBLK
 960 #
 961 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
 962 # Added in commit 14bf61ffe
 963 #
 964 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
 965 tmp_flags="$EXTRA_KCFLAGS"
 966 EXTRA_KCFLAGS="-Werror"
 967 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk],
 968 qc_dqblk, [
 969         #include <linux/fs.h>
 970         #include <linux/quota.h>
 971 ],[
 972         ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
 973 ],[
 974         AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
 975                 [quotactl_ops.set_dqblk takes struct qc_dqblk])
 976         AC_DEFINE(HAVE_DQUOT_KQID, 1,
 977                 [quotactl_ops.set_dqblk takes struct kqid])
 978 ])
 979 EXTRA_KCFLAGS="$tmp_flags"
 980 ]) # LC_HAVE_DQUOT_QC_DQBLK
 981
 982 #
 983 # LC_HAVE_AIO_COMPLETE
 984 #
 985 # 3.19 kernel makes aio_complete() static
 986 #
 987 AC_DEFUN([LC_HAVE_AIO_COMPLETE], [
 988 LB_CHECK_COMPILE([if kernel has exported aio_complete() ],
 989 aio_complete, [
 990         #include <linux/aio.h>
 991 ],[
 992         aio_complete(NULL, 0, 0);
 993 ],[
 994         AC_DEFINE(HAVE_AIO_COMPLETE, 1, [aio_complete defined])
 995 ])
 996 ]) # LC_HAVE_AIO_COMPLETE
 997
 998 #
 999 # LC_HAVE_IS_ROOT_INODE
1000 #
1001 # 3.19 kernel adds is_root_inode()
1002 # Commit a7400222e3eb ("new helper: is_root_inode()")
1003 #
1004 AC_DEFUN([LC_HAVE_IS_ROOT_INODE], [
1005 LB_CHECK_COMPILE([if kernel has is_root_inode() ],
1006 is_root_inode, [
1007         #include <linux/fs.h>
1008 ],[
1009         is_root_inode(NULL);
1010 ],[
1011         AC_DEFINE(HAVE_IS_ROOT_INODE, 1, [is_root_inode defined])
1012 ])
1013 ]) # LC_HAVE_IS_ROOT_INODE
1014
1015 #
1016 # LC_BACKING_DEV_INFO_REMOVAL
1017 #
1018 # 3.20 kernel removed backing_dev_info from address_space
1019 #
1020 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
1021 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
1022 backing_dev_info, [
1023         #include <linux/fs.h>
1024 ],[
1025         struct address_space mapping;
1026
1027         mapping.backing_dev_info = NULL;
1028 ],[
1029         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
1030 ])
1031 ]) # LC_BACKING_DEV_INFO_REMOVAL
1032
1033 #
1034 # LC_HAVE_BDI_CAP_MAP_COPY
1035 #
1036 # 3.20  removed mmap handling for backing devices since
1037 #       it breaks on non-MMU systems. See kernel commit
1038 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
1039 #
1040 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
1041 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
1042 bdi_cap_map_copy, [
1043         #include <linux/backing-dev.h>
1044 ],[
1045         struct backing_dev_info info;
1046
1047         info.capabilities = BDI_CAP_MAP_COPY;
1048 ],[
1049         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
1050                 [BDI_CAP_MAP_COPY exist])
1051 ])
1052 ]) # LC_HAVE_BDI_CAP_MAP_COPY
1053
1054 #
1055 # LC_IOV_ITER_RW
1056 #
1057 # 4.1 kernel has iov_iter_rw
1058 #
1059 AC_DEFUN([LC_IOV_ITER_RW], [
1060 LB_CHECK_COMPILE([if iov_iter_rw exist],
1061 iov_iter_rw, [
1062         #include <linux/fs.h>
1063         #include <linux/uio.h>
1064 ],[
1065         struct iov_iter *iter = NULL;
1066
1067         iov_iter_rw(iter);
1068 ],[
1069         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
1070                 [iov_iter_rw exist])
1071 ])
1072 ]) # LC_IOV_ITER_RW
1073
1074 #
1075 # LC_HAVE_SYNC_READ_WRITE
1076 #
1077 # 4.1 new_sync_[read|write] no longer exported
1078 #
1079 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
1080 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
1081         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
1082                         [new_sync_[read|write] is exported by the kernel])])
1083 ]) # LC_HAVE_SYNC_READ_WRITE
1084
1085 #
1086 # LC_HAVE___BI_CNT
1087 #
1088 # 4.1 redefined bi_cnt as __bi_cnt in commit dac56212e8127dbc0
1089 #
1090 AC_DEFUN([LC_HAVE___BI_CNT], [
1091 LB_CHECK_COMPILE([if Linux kernel has __bi_cnt in struct bio],
1092 have___bi_cnt, [
1093         #include <asm/atomic.h>
1094         #include <linux/bio.h>
1095         #include <linux/blk_types.h>
1096 ],[
1097         struct bio bio = { };
1098         int cnt;
1099         cnt = atomic_read(&bio.__bi_cnt);
1100 ], [
1101         AC_DEFINE(HAVE___BI_CNT, 1,
1102                 [struct bio has __bi_cnt])
1103 ])
1104 ]) # LC_HAVE___BI_CNT
1105
1106 #
1107 # LC_SYMLINK_OPS_USE_NAMEIDATA
1108 #
1109 # For the 4.2+ kernels the file system internal symlink api no
1110 # longer uses struct nameidata as a argument
1111 #
1112 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
1113 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
1114 symlink_use_nameidata, [
1115         #include <linux/namei.h>
1116         #include <linux/fs.h>
1117 ],[
1118         struct nameidata *nd = NULL;
1119
1120         ((struct inode_operations *)0)->follow_link(NULL, nd);
1121         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
1122 ],[
1123         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
1124                 [symlink inode operations need struct nameidata argument])
1125 ])
1126 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
1127
1128 #
1129 # LC_BIO_ENDIO_USES_ONE_ARG
1130 #
1131 # 4.2 kernel bio_endio now only takes one argument
1132 #
1133 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
1134 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
1135 bio_endio, [
1136         #include <linux/bio.h>
1137 ],[
1138         bio_endio(NULL);
1139 ],[
1140         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
1141                 [bio_endio takes only one argument])
1142 ])
1143 ]) # LC_BIO_ENDIO_USES_ONE_ARG
1144
1145 #
1146 # LC_ACCOUNT_PAGE_DIRTIED_3ARGS
1147 #
1148 # 4.2 [to 4.5] kernel page dirtied takes 3 arguments
1149 #
1150 AC_DEFUN([LC_ACCOUNT_PAGE_DIRTIED_3ARGS], [
1151 LB_CHECK_COMPILE([if 'account_page_dirtied' with 3 args exists],
1152 account_page_dirtied, [
1153         #include <linux/mm.h>
1154 ],[
1155         account_page_dirtied(NULL, NULL, NULL);
1156 ],[
1157         AC_DEFINE(HAVE_ACCOUNT_PAGE_DIRTIED_3ARGS, 1,
1158                 [account_page_dirtied takes three arguments])
1159 ])
1160 ]) # LC_ACCOUNT_PAGE_DIRTIED_3ARGS
1161
1162 #
1163 # LC_HAVE_CRYPTO_ALLOC_SKCIPHER
1164 #
1165 # Kernel version 4.12 commit 7a7ffe65c8c5
1166 # introduced crypto_alloc_skcipher().
1167 #
1168 AC_DEFUN([LC_HAVE_CRYPTO_ALLOC_SKCIPHER], [
1169 LB_CHECK_COMPILE([if crypto_alloc_skcipher is defined],
1170 crypto_alloc_skcipher, [
1171         #include <crypto/skcipher.h>
1172 ],[
1173         crypto_alloc_skcipher(NULL, 0, 0);
1174 ],[
1175         AC_DEFINE(HAVE_CRYPTO_ALLOC_SKCIPHER, 1,
1176                 [crypto_alloc_skcipher is defined])
1177 ])
1178 ]) # LC_HAVE_CRYPTO_ALLOC_SKCIPHER
1179
1180 #
1181 # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
1182 #
1183 # 4.3 replace interval with interval_exp in 'struct blk_integrity'
1184 # 'struct blk_integrity_profile' is also added in this version,
1185 # thus use this to determine whether 'struct blk_integrity' has profile
1186 #
1187 AC_DEFUN([LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY], [
1188 LB_CHECK_COMPILE([if 'blk_integrity.interval_exp' exist],
1189 blk_integrity_interval_exp, [
1190         #include <linux/blkdev.h>
1191 ],[
1192         ((struct blk_integrity *)0)->interval_exp = 0;
1193 ],[
1194         AC_DEFINE(HAVE_INTERVAL_EXP_BLK_INTEGRITY, 1,
1195                 [blk_integrity.interval_exp exist])
1196 ])
1197 ]) # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
1198
1199 #
1200 # LC_HAVE_CACHE_HEAD_HLIST
1201 #
1202 # 4.3 kernel swiched to hlist for cache_head
1203 #
1204 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
1205 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
1206 cache_head_has_hlist, [
1207         #include <linux/sunrpc/cache.h>
1208 ],[
1209         do {} while(sizeof(((struct cache_head *)0)->cache_list));
1210 ],[
1211         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
1212                 [cache_head has hlist cache_list])
1213 ])
1214 ]) # LC_HAVE_CACHE_HEAD_HLIST
1215
1216 #
1217 # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
1218 #
1219 # Kernel version 4.3 commit e409de992e3ea3674393465f07cc71c948edd87a
1220 # simplified xattr_handler handling by passing in the handler pointer
1221 #
1222 AC_DEFUN([LC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
1223 tmp_flags="$EXTRA_KCFLAGS"
1224 EXTRA_KCFLAGS="-Werror"
1225 LB_CHECK_COMPILE([if 'struct xattr_handler' functions pass in handler pointer],
1226 xattr_handler_simplified, [
1227         #include <linux/xattr.h>
1228 ],[
1229         struct xattr_handler handler;
1230
1231         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, 0);
1232         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, 0, 0);
1233 ],[
1234         AC_DEFINE(HAVE_XATTR_HANDLER_SIMPLIFIED, 1, [handler pointer is parameter])
1235 ])
1236 EXTRA_KCFLAGS="$tmp_flags"
1237 ]) # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
1238
1239 #
1240 # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
1241 #
1242 # 4.3 replace interval with interval_exp in 'struct blk_integrity'.
1243 #
1244 AC_DEFUN([LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD], [
1245 LB_CHECK_COMPILE([if 'bio_integrity_payload.bip_iter' exist],
1246 bio_integrity_payload_bip_iter, [
1247         #include <linux/bio.h>
1248 ],[
1249         ((struct bio_integrity_payload *)0)->bip_iter.bi_size = 0;
1250 ],[
1251         AC_DEFINE(HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD, 1,
1252                 [bio_integrity_payload.bip_iter exist])
1253 ])
1254 ]) # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
1255
1256 #
1257 # LC_BIO_INTEGRITY_PREP_FN
1258 #
1259 # Lustre kernel patch extents bio_integrity_prep to accept optional
1260 # generate/verify_fn as extra args.
1261 #
1262 AC_DEFUN([LC_BIO_INTEGRITY_PREP_FN], [
1263 LB_CHECK_COMPILE([if 'bio_integrity_prep_fn' exists],
1264 bio_integrity_prep_fn, [
1265         #include <linux/bio.h>
1266 ],[
1267         bio_integrity_prep_fn(NULL, NULL, NULL);
1268 ],[
1269         AC_DEFINE(HAVE_BIO_INTEGRITY_PREP_FN, 1,
1270                 [kernel has bio_integrity_prep_fn])
1271         AC_SUBST(PATCHED_INTEGRITY_INTF)
1272 ],[
1273         AC_SUBST(PATCHED_INTEGRITY_INTF, [#])
1274 ])
1275 ]) # LC_BIO_INTEGRITY_PREP_FN
1276
1277 #
1278 # LC_HAVE_BI_OPF
1279 #
1280 # 4.4/4.8 redefined bi_rw as bi_opf (SLES12/kernel commit 4382e33ad37486)
1281 #
1282 AC_DEFUN([LC_HAVE_BI_OPF], [
1283 LB_CHECK_COMPILE([if Linux kernel has bi_opf in struct bio],
1284 have_bi_opf, [
1285         #include <linux/bio.h>
1286 ],[
1287         struct bio bio;
1288
1289         bio.bi_opf = 0;
1290 ], [
1291         AC_DEFINE(HAVE_BI_OPF, 1,
1292                 [struct bio has bi_opf])
1293 ])
1294 ]) # LC_HAVE_BI_OPF
1295
1296 #
1297 # LC_HAVE_SUBMIT_BIO_2ARGS
1298 #
1299 # 4.4 removed an argument from submit_bio
1300 #
1301 AC_DEFUN([LC_HAVE_SUBMIT_BIO_2ARGS], [
1302 LB_CHECK_COMPILE([if submit_bio takes two arguments],
1303 have_submit_bio_2args, [
1304         #include <linux/bio.h>
1305 ],[
1306         struct bio bio;
1307         submit_bio(READ, &bio);
1308 ], [
1309         AC_DEFINE(HAVE_SUBMIT_BIO_2ARGS, 1,
1310                 [submit_bio takes two arguments])
1311 ])
1312 ]) # LC_HAVE_SUBMIT_BIO_2_ARGS
1313
1314 #
1315 # LC_HAVE_CLEAN_BDEV_ALIASES
1316 #
1317 # 4.4/4.9 unmap_underlying_metadata was replaced by clean_bdev_aliases
1318 # (SLES12/kernel commit 29f3ad7d8380364c)
1319 #
1320 AC_DEFUN([LC_HAVE_CLEAN_BDEV_ALIASES], [
1321 LB_CHECK_COMPILE([if kernel has clean_bdev_aliases],
1322 have_clean_bdev_aliases, [
1323         #include <linux/buffer_head.h>
1324 ],[
1325         clean_bdev_aliases(NULL,1,1);
1326 ], [
1327         AC_DEFINE(HAVE_CLEAN_BDEV_ALIASES, 1,
1328                 [kernel has clean_bdev_aliases])
1329 ])
1330 ]) # LC_HAVE_CLEAN_BDEV_ALIASES
1331
1332 #
1333 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
1334 #
1335 # 4.4 kernel have moved locks API users to
1336 # locks_lock_inode_wait()
1337 #
1338 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
1339 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
1340 locks_lock_file_wait, [
1341         #include <linux/fs.h>
1342 ],[
1343         locks_lock_file_wait(NULL, NULL);
1344 ],[
1345         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
1346                 [kernel has locks_lock_file_wait])
1347 ])
1348 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
1349
1350 #
1351 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
1352 #
1353 # 4.4 kernel merged type-specific data with the payload data for keys
1354 #
1355 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
1356 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
1357 key_payload_data_array, [
1358         #include <linux/key.h>
1359 ],[
1360         struct key key = { };
1361
1362         key.payload.data[0] = NULL;
1363 ],[
1364         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
1365 ])
1366 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
1367
1368 #
1369 # LC_HAVE_XATTR_HANDLER_NAME
1370 #
1371 # Kernel version 4.4 commit 98e9cb5711c68223f0e4d5201b9a6add255ec550
1372 # add a name member to struct xattr_handler
1373 #
1374 AC_DEFUN([LC_HAVE_XATTR_HANDLER_NAME], [
1375 tmp_flags="$EXTRA_KCFLAGS"
1376 EXTRA_KCFLAGS="-Werror"
1377 LB_CHECK_COMPILE([if 'struct xattr_handler' has a name member],
1378 xattr_handler_name, [
1379         #include <linux/xattr.h>
1380 ],[
1381         ((struct xattr_handler *)NULL)->name = NULL;
1382 ],[
1383         AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1, [xattr_handler has a name member])
1384 ])
1385 EXTRA_KCFLAGS="$tmp_flags"
1386 ]) # LC_HAVE_XATTR_HANDLER_NAME
1387
1388 #
1389 # LC_HAVE_FILE_DENTRY
1390 #
1391 # 4.5 adds wrapper file_dentry
1392 #
1393 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
1394 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
1395 file_dentry, [
1396         #include <linux/fs.h>
1397 ],[
1398         file_dentry(NULL);
1399 ], [
1400         AC_DEFINE(HAVE_FILE_DENTRY, 1,
1401                 [kernel has file_dentry])
1402 ])
1403 ]) # LC_HAVE_FILE_DENTRY
1404
1405 #
1406 # LC_HAVE_INODE_LOCK
1407 #
1408 # 4.5 introduced inode_lock
1409 #
1410 AC_DEFUN([LC_HAVE_INODE_LOCK], [
1411 LB_CHECK_COMPILE([if 'inode_lock' is defined],
1412 inode_lock, [
1413         #include <linux/fs.h>
1414 ],[
1415         inode_lock(NULL);
1416 ], [
1417         AC_DEFINE(HAVE_INODE_LOCK, 1,
1418                   [inode_lock is defined])
1419 ])
1420 ]) # LC_HAVE_INODE_LOCK
1421
1422 #
1423 # LC_HAVE_IOP_GET_LINK
1424 #
1425 # 4.5 vfs replaced iop->follow_link with
1426 # iop->get_link
1427 #
1428 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
1429 LB_CHECK_COMPILE([if 'iop' has 'get_link'],
1430 inode_ops_get_link, [
1431         #include <linux/fs.h>
1432 ],[
1433         struct inode_operations iop;
1434         iop.get_link = NULL;
1435 ],[
1436         AC_DEFINE(HAVE_IOP_GET_LINK, 1,
1437                 [have iop get_link])
1438 ])
1439 ]) # LC_HAVE_IOP_GET_LINK
1440
1441 #
1442 # LC_HAVE_IN_COMPAT_SYSCALL
1443 #
1444 # 4.6 renamed is_compat_task to in_compat_syscall
1445 #
1446 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
1447 LB_CHECK_COMPILE([if 'in_compat_syscall' is defined],
1448 in_compat_syscall, [
1449         #include <linux/compat.h>
1450 ],[
1451         in_compat_syscall();
1452 ],[
1453         AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1,
1454                 [have in_compat_syscall])
1455 ])
1456 ]) # LC_HAVE_IN_COMPAT_SYSCALL
1457
1458 #
1459 # LC_HAVE_XATTR_HANDLER_INODE_PARAM
1460 #
1461 # Kernel version 4.6 commit b296821a7c42fa58baa17513b2b7b30ae66f3336
1462 # and commit 5930122683dff58f0846b0f0405b4bd598a3ba6a added inode parameter
1463 # to xattr_handler functions
1464 #
1465 AC_DEFUN([LC_HAVE_XATTR_HANDLER_INODE_PARAM], [
1466 tmp_flags="$EXTRA_KCFLAGS"
1467 EXTRA_KCFLAGS="-Werror"
1468 LB_CHECK_COMPILE([if 'struct xattr_handler' functions have inode parameter],
1469 xattr_handler_inode_param, [
1470         #include <linux/xattr.h>
1471 ],[
1472         const struct xattr_handler handler;
1473
1474         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, NULL, 0);
1475         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, NULL, 0, 0);
1476 ],[
1477         AC_DEFINE(HAVE_XATTR_HANDLER_INODE_PARAM, 1, [needs inode parameter])
1478 ])
1479 EXTRA_KCFLAGS="$tmp_flags"
1480 ]) # LC_HAVE_XATTR_HANDLER_INODE_PARAM
1481
1482 #
1483 # LC_D_IN_LOOKUP
1484 #
1485 # Kernel version 4.6 commit 85c7f81041d57cfe9dc97f4680d5586b54534a39
1486 # introduced parallel lookups in the VFS layer. The inline function
1487 # d_in_lookup was added to notify when the same item was being queried
1488 # at the same time.
1489 #
1490 AC_DEFUN([LC_D_IN_LOOKUP], [
1491 tmp_flags="$EXTRA_KCFLAGS"
1492 EXTRA_KCFLAGS="-Werror"
1493 LB_CHECK_COMPILE([if 'd_in_lookup' is defined],
1494 d_in_lookup, [
1495         #include <linux/dcache.h>
1496 ],[
1497         d_in_lookup(NULL);
1498 ],[
1499         AC_DEFINE(HAVE_D_IN_LOOKUP, 1, [d_in_lookup is defined])
1500 ])
1501 EXTRA_KCFLAGS="$tmp_flags"
1502 ]) # LC_D_IN_LOOKUP
1503
1504 #
1505 # LC_LOCK_PAGE_MEMCG
1506 #
1507 # Kernel version 4.6 adds lock_page_memcg
1508 #
1509 AC_DEFUN([LC_LOCK_PAGE_MEMCG], [
1510 LB_CHECK_COMPILE([if 'lock_page_memcg' is defined],
1511 lock_page_memcg, [
1512         #include <linux/memcontrol.h>
1513 ],[
1514         lock_page_memcg(NULL);
1515 ],[
1516         AC_DEFINE(HAVE_LOCK_PAGE_MEMCG, 1,
1517                 [lock_page_memcg is defined])
1518 ])
1519 ]) # LC_LOCK_PAGE_MEMCG
1520
1521 #
1522 # LC_DIRECTIO_2ARGS
1523 #
1524 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
1525 # direct-io: eliminate the offset argument to ->direct_IO
1526 #
1527 AC_DEFUN([LC_DIRECTIO_2ARGS], [
1528 LB_CHECK_COMPILE([if '->direct_IO()' taken 2 arguments],
1529 direct_io_2args, [
1530         #include <linux/fs.h>
1531 ],[
1532         struct address_space_operations ops = { };
1533         struct iov_iter *iter = NULL;
1534         struct kiocb *iocb = NULL;
1535         int rc;
1536
1537         rc = ops.direct_IO(iocb, iter);
1538 ],[
1539         AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1,
1540                 [direct_IO need 2 arguments])
1541 ])
1542 ]) # LC_DIRECTIO_2ARGS
1543
1544 #
1545 # LC_GENERIC_WRITE_SYNC_2ARGS
1546 #
1547 # Kernel version 4.7 commit dde0c2e79848298cc25621ad080d47f94dbd7cce
1548 # fs: add IOCB_SYNC and IOCB_DSYNC
1549 #
1550 AC_DEFUN([LC_GENERIC_WRITE_SYNC_2ARGS], [
1551 LB_CHECK_COMPILE([if 'generic_write_sync()' taken 2 arguments],
1552 generic_write_sync_2args, [
1553         #include <linux/fs.h>
1554 ],[
1555         struct kiocb *iocb = NULL;
1556         ssize_t rc;
1557
1558         rc = generic_write_sync(iocb, 0);
1559 ],[
1560         AC_DEFINE(HAVE_GENERIC_WRITE_SYNC_2ARGS, 1,
1561                 [generic_write_sync need 2 arguments])
1562 ])
1563 ]) # LC_GENERIC_WRITE_SYNC_2ARGS
1564
1565 #
1566 # LC_FOP_ITERATE_SHARED
1567 #
1568 # Kernel v4.6-rc3-29-g6192269 adds iterate_shared method to file_operations
1569 #
1570 AC_DEFUN([LC_FOP_ITERATE_SHARED], [
1571 LB_CHECK_COMPILE([if 'file_operations' has 'iterate_shared'],
1572 fop_iterate_shared, [
1573         #include <linux/fs.h>
1574 ],[
1575         struct file_operations fop;
1576         fop.iterate_shared = NULL;
1577 ],[
1578         AC_DEFINE(HAVE_FOP_ITERATE_SHARED, 1,
1579                 [file_operations has iterate_shared])
1580 ])
1581 ]) # LC_FOP_ITERATE_SHARED
1582
1583 #
1584 # LC_EXPORT_DEFAULT_FILE_SPLICE_READ
1585 #
1586 # 4.8-rc8 commit 82c156f853840645604acd7c2cebcb75ed1b6652 switched
1587 # generic_file_splice_read() to using ->read_iter. We can test this
1588 # change since default_file_splice_read() is no longer exported.
1589 #
1590 AC_DEFUN([LC_EXPORT_DEFAULT_FILE_SPLICE_READ], [
1591 LB_CHECK_EXPORT([default_file_splice_read], [fs/splice.c],
1592         [AC_DEFINE(HAVE_DEFAULT_FILE_SPLICE_READ_EXPORT, 1,
1593                         [default_file_splice_read is exported])])
1594 ]) # LC_EXPORT_DEFAULT_FILE_SPLCE_READ
1595
1596 #
1597 # LC_HAVE_POSIX_ACL_VALID_USER_NS
1598 #
1599 # 4.8 posix_acl_valid takes struct user_namespace
1600 #
1601 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
1602 LB_CHECK_COMPILE([if 'posix_acl_valid' takes 'struct user_namespace'],
1603 posix_acl_valid, [
1604         #include <linux/fs.h>
1605         #include <linux/posix_acl.h>
1606 ],[
1607         posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
1608 ],[
1609         AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
1610                 [posix_acl_valid takes struct user_namespace])
1611 ])
1612 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
1613
1614 #
1615 # LC_D_COMPARE_4ARGS
1616 #
1617 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
1618 # get rid of 'parent' argument of ->d_compare()
1619 #
1620 AC_DEFUN([LC_D_COMPARE_4ARGS], [
1621 LB_CHECK_COMPILE([if 'd_compare' taken 4 arguments],
1622 d_compare_4args, [
1623         #include <linux/dcache.h>
1624 ],[
1625         ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
1626 ],[
1627         AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
1628                 [d_compare need 4 arguments])
1629 ])
1630 ]) # LC_D_COMPARE_4ARGS
1631
1632 #
1633 # LC_FULL_NAME_HASH_3ARGS
1634 #
1635 # Kernel version 4.8 commit 8387ff2577eb9ed245df9a39947f66976c6bcd02
1636 # vfs: make the string hashes salt the hash
1637 #
1638 AC_DEFUN([LC_FULL_NAME_HASH_3ARGS], [
1639 LB_CHECK_COMPILE([if 'full_name_hash' taken 3 arguments],
1640 full_name_hash_3args, [
1641         #include <linux/stringhash.h>
1642 ],[
1643         unsigned int hash;
1644         hash = full_name_hash(NULL,NULL,0);
1645 ],[
1646         AC_DEFINE(HAVE_FULL_NAME_HASH_3ARGS, 1,
1647                 [full_name_hash need 3 arguments])
1648 ])
1649 ]) # LC_FULL_NAME_HASH_3ARGS
1650
1651 #
1652 # LC_STRUCT_POSIX_ACL_XATTR
1653 #
1654 # Kernel version 4.8 commit 2211d5ba5c6c4e972ba6dbc912b2897425ea6621
1655 # posix_acl: xattr representation cleanups
1656 #
1657 AC_DEFUN([LC_STRUCT_POSIX_ACL_XATTR], [
1658 LB_CHECK_COMPILE([if 'struct posix_acl_xattr_{header,entry}' defined],
1659 struct_posix_acl_xattr, [
1660         #include <linux/fs.h>
1661         #include <linux/posix_acl_xattr.h>
1662 ],[
1663         struct posix_acl_xattr_header *h = NULL;
1664         struct posix_acl_xattr_entry  *e;
1665         e = (void *)(h + 1);
1666 ],[
1667         AC_DEFINE(HAVE_STRUCT_POSIX_ACL_XATTR, 1,
1668                 [struct posix_acl_xattr_{header,entry} defined])
1669 ])
1670 ]) # LC_STRUCT_POSIX_ACL_XATTR
1671
1672 #
1673 # LC_IOP_XATTR
1674 #
1675 # Kernel version 4.8 commit fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42
1676 # removed {get,set,remove}xattr inode operations
1677 #
1678 AC_DEFUN([LC_IOP_XATTR], [
1679 LB_CHECK_COMPILE([if 'inode_operations' has {get,set,remove}xattr members],
1680 inode_ops_xattr, [
1681         #include <linux/fs.h>
1682 ],[
1683         struct inode_operations iop;
1684         iop.setxattr = NULL;
1685         iop.getxattr = NULL;
1686         iop.removexattr = NULL;
1687 ],[
1688         AC_DEFINE(HAVE_IOP_XATTR, 1,
1689                 [inode_operations has {get,set,remove}xattr members])
1690 ])
1691 ]) # LC_IOP_XATTR
1692
1693 #
1694 # LC_GROUP_INFO_GID
1695 #
1696 # Kernel version 4.9 commit 81243eacfa400f5f7b89f4c2323d0de9982bb0fb
1697 # cred: simpler, 1D supplementary groups
1698 #
1699 AC_DEFUN([LC_GROUP_INFO_GID], [
1700 LB_CHECK_COMPILE([if 'struct group_info' has member 'gid'],
1701 group_info_gid, [
1702         #include <linux/cred.h>
1703 ],[
1704         kgid_t *p;
1705         p = ((struct group_info *)0)->gid;
1706 ],[
1707         AC_DEFINE(HAVE_GROUP_INFO_GID, 1,
1708                 [struct group_info has member gid])
1709 ])
1710 ]) # LC_GROUP_INFO_GID
1711
1712 #
1713 # LC_VFS_SETXATTR
1714 #
1715 # Kernel version 4.9 commit 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4
1716 # added __vfs_{get,set,remove}xattr helpers
1717 #
1718 AC_DEFUN([LC_VFS_SETXATTR], [
1719 LB_CHECK_COMPILE([if '__vfs_setxattr' helper is available],
1720 vfs_setxattr, [
1721         #include <linux/xattr.h>
1722 ],[
1723         __vfs_setxattr(NULL, NULL, NULL, NULL, 0, 0);
1724 ],[
1725         AC_DEFINE(HAVE_VFS_SETXATTR, 1,
1726                 ['__vfs_setxattr is available])
1727 ])
1728 ]) # LC_VFS_SETXATTR
1729
1730 #
1731 # LC_POSIX_ACL_UPDATE_MODE
1732 #
1733 # Kernel version 4.9 commit 073931017b49d9458aa351605b43a7e34598caef
1734 # posix_acl: Clear SGID bit when setting file permissions
1735 #
1736 AC_DEFUN([LC_POSIX_ACL_UPDATE_MODE], [
1737 LB_CHECK_COMPILE([if 'posix_acl_update_mode' exists],
1738 posix_acl_update_mode, [
1739         #include <linux/fs.h>
1740         #include <linux/posix_acl.h>
1741 ],[
1742         posix_acl_update_mode(NULL, NULL, NULL);
1743 ],[
1744         AC_DEFINE(HAVE_POSIX_ACL_UPDATE_MODE, 1,
1745                 ['posix_acl_update_mode' is available])
1746 ])
1747 ]) # LC_POSIX_ACL_UPDATE_MODE
1748
1749 #
1750 # LC_IOP_GENERIC_READLINK
1751 #
1752 # Kernel version 4.10 commit dfeef68862edd7d4bafe68ef7aeb5f658ef24bb5
1753 # removed generic_readlink from individual file systems
1754 #
1755 AC_DEFUN([LC_IOP_GENERIC_READLINK], [
1756 LB_CHECK_COMPILE([if 'generic_readlink' still exist],
1757 inode_ops_readlink, [
1758         #include <linux/fs.h>
1759 ],[
1760         struct inode_operations iop;
1761         iop.readlink = generic_readlink;
1762 ],[
1763         AC_DEFINE(HAVE_IOP_GENERIC_READLINK, 1,
1764                 [generic_readlink has been removed])
1765 ])
1766 ]) # LC_IOP_GENERIC_READLINK
1767
1768 #
1769 # LC_HAVE_VM_FAULT_ADDRESS
1770 #
1771 # Kernel version 4.10 commit 1a29d85eb0f19b7d8271923d8917d7b4f5540b3e
1772 # removed virtual_address field. Need to use address field instead
1773 #
1774 AC_DEFUN([LC_HAVE_VM_FAULT_ADDRESS], [
1775 LB_CHECK_COMPILE([if 'struct vm_fault' replaced virtual_address with address field],
1776 vm_fault_address, [
1777         #include <linux/mm.h>
1778 ],[
1779         struct vm_fault vmf;
1780         vmf.address = NULL;
1781 ],[
1782         AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
1783                 [virtual_address has been replaced by address field])
1784 ])
1785 ]) # LC_HAVE_VM_FAULT_ADDRESS
1786
1787 #
1788 # LC_INODEOPS_ENHANCED_GETATTR
1789 #
1790 # Kernel version 4.11 commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
1791 # expanded getattr to be able to get more stat information.
1792 #
1793 AC_DEFUN([LC_INODEOPS_ENHANCED_GETATTR], [
1794 LB_CHECK_COMPILE([if 'inode_operations' getattr member can gather advance stats],
1795 getattr_path, [
1796         #include <linux/fs.h>
1797 ],[
1798         struct path path;
1799
1800         ((struct inode_operations *)1)->getattr(&path, NULL, 0, 0);
1801 ],[
1802         AC_DEFINE(HAVE_INODEOPS_ENHANCED_GETATTR, 1,
1803                 [inode_operations .getattr member function can gather advance stats])
1804 ])
1805 ]) # LC_INODEOPS_ENHANCED_GETATTR
1806
1807 #
1808 # LC_VM_OPERATIONS_REMOVE_VMF_ARG
1809 #
1810 # Kernel version 4.11 commit 11bac80004499ea59f361ef2a5516c84b6eab675
1811 # removed struct vm_area_struct as an argument for vm_operations since
1812 # in the same kernel version struct vma_area_struct was folded into
1813 # struct vm_fault.
1814 #
1815 AC_DEFUN([LC_VM_OPERATIONS_REMOVE_VMF_ARG], [
1816 LB_CHECK_COMPILE([if 'struct vm_operations' removed struct vm_area_struct],
1817 vm_operations_no_vm_area_struct, [
1818         #include <linux/mm.h>
1819 ],[
1820         struct vm_fault vmf;
1821
1822         ((struct vm_operations_struct *)0)->fault(&vmf);
1823         ((struct vm_operations_struct *)0)->page_mkwrite(&vmf);
1824 ],[
1825         AC_DEFINE(HAVE_VM_OPS_USE_VM_FAULT_ONLY, 1,
1826                 ['struct vm_operations' remove struct vm_area_struct argument])
1827 ])
1828 ]) # LC_VM_OPERATIONS_REMOVE_VMF_ARG
1829
1830 #
1831 # LC_HAVE_KEY_USAGE_REFCOUNT
1832 #
1833 # Kernel version 4.11 commit fff292914d3a2f1efd05ca71c2ba72a3c663201e
1834 # converted key.usage from atomic_t to refcount_t.
1835 #
1836 AC_DEFUN([LC_HAVE_KEY_USAGE_REFCOUNT], [
1837 LB_CHECK_COMPILE([if 'key.usage' is refcount_t],
1838 key_usage_refcount, [
1839         #include <linux/key.h>
1840 ],[
1841         struct key key = { };
1842
1843         refcount_read(&key.usage);
1844 ],[
1845         AC_DEFINE(HAVE_KEY_USAGE_REFCOUNT, 1, [key.usage is of type refcount_t])
1846 ])
1847 ]) #LC_HAVE_KEY_USAGE_REFCOUNT
1848
1849 #
1850 # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
1851 #
1852 # Kernel version 4.11 commit f437a3f477cce402dbec6537b29e9e33962c9f73
1853 # switched CRYPTO_MAX_ALG_NAME from 64 to 128.
1854 #
1855 AC_DEFUN([LC_HAVE_CRYPTO_MAX_ALG_NAME_128], [
1856 LB_CHECK_COMPILE([if 'CRYPTO_MAX_ALG_NAME' is 128],
1857 crypto_max_alg_name, [
1858         #include <linux/crypto.h>
1859 ],[
1860         #if CRYPTO_MAX_ALG_NAME != 128
1861         exit(1);
1862         #endif
1863 ],[
1864         AC_DEFINE(HAVE_CRYPTO_MAX_ALG_NAME_128, 1,
1865                 ['CRYPTO_MAX_ALG_NAME' is 128])
1866 ])
1867 ]) # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
1868
1869 #
1870 # Kernel version 4.12 commit 47f38c539e9a42344ff5a664942075bd4df93876
1871 # CURRENT_TIME is not 64 bit time safe so it was replaced with
1872 # current_time()
1873 #
1874 AC_DEFUN([LC_CURRENT_TIME], [
1875 LB_CHECK_COMPILE([if CURRENT_TIME has been replaced with current_time],
1876 current_time, [
1877         #include <linux/fs.h>
1878 ],[
1879         struct iattr attr;
1880
1881         attr.ia_atime = current_time(NULL);
1882 ],[
1883         AC_DEFINE(HAVE_CURRENT_TIME, 1,
1884                 [current_time() has replaced CURRENT_TIME])
1885 ])
1886 ]) # LIBCFS_CURRENT_TIME
1887
1888 #
1889 # Kernel version 4.12-rc3 85787090a21eb749d8b347eaf9ff1a455637473c
1890 # changed struct super_block s_uuid into a proper uuid_t
1891 #
1892 AC_DEFUN([LC_SUPER_BLOCK_S_UUID], [
1893 LB_CHECK_COMPILE([if 'struct super_block' s_uuid is uuid_t],
1894 super_block_s_uuid, [
1895         #include <linux/fs.h>
1896 ],[
1897         struct super_block sb;
1898
1899         uuid_parse(NULL, &sb.s_uuid);
1900 ],[
1901         AC_DEFINE(HAVE_S_UUID_AS_UUID_T, 1, ['s_uuid' is an uuid_t])
1902 ])
1903 ]) # LC_SUPER_BLOCK_S_UUID
1904
1905 #
1906 # LC_SUPER_SETUP_BDI_NAME
1907 #
1908 # Kernel version 4.12 commit 9594caf216dc0fe3e318b34af0127276db661241
1909 # unified bdi handling
1910 #
1911 AC_DEFUN([LC_SUPER_SETUP_BDI_NAME], [
1912 LB_CHECK_COMPILE([if 'super_setup_bdi_name' exist],
1913 super_setup_bdi_name, [
1914         #include <linux/fs.h>
1915 ],[
1916         super_setup_bdi_name(NULL, "lustre");
1917 ],[
1918         AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1,
1919                 ['super_setup_bdi_name' is available])
1920 ])
1921 ]) # LC_SUPER_SETUP_BDI_NAME
1922
1923 #
1924 # LC_BI_STATUS
1925 #
1926 # 4.12 replace bi_error to bi_status
1927 #
1928 AC_DEFUN([LC_BI_STATUS], [
1929 LB_CHECK_COMPILE([if 'bi_status' exist],
1930 bi_status, [
1931         #include <linux/blk_types.h>
1932 ],[
1933         ((struct bio *)0)->bi_status = 0;
1934 ],[
1935         AC_DEFINE(HAVE_BI_STATUS, 1,
1936                 ['bi_status' is available])
1937 ])
1938 ]) # LC_BI_STATUS
1939
1940 #
1941 # LC_BIO_INTEGRITY_ENABLED
1942 #
1943 # 4.13 removed bio_integrity_enabled
1944 #
1945 AC_DEFUN([LC_BIO_INTEGRITY_ENABLED], [
1946 LB_CHECK_COMPILE([if 'bio_integrity_enabled' exist],
1947 bio_integrity_enabled, [
1948         #include <linux/bio.h>
1949 ],[
1950         bio_integrity_enabled(NULL);
1951 ],[
1952         AC_DEFINE(HAVE_BIO_INTEGRITY_ENABLED, 1,
1953                 ['bio_integrity_enabled' is available])
1954 ])
1955 ]) # LC_BIO_INTEGRITY_ENABLED
1956
1957 #
1958 # LC_PAGEVEC_INIT_ONE_PARAM
1959 #
1960 # 4.14 pagevec_init takes one parameter
1961 #
1962 AC_DEFUN([LC_PAGEVEC_INIT_ONE_PARAM], [
1963 LB_CHECK_COMPILE([if 'pagevec_init' takes one parameter],
1964 pagevec_init, [
1965         #include <linux/pagevec.h>
1966 ],[
1967         pagevec_init(NULL);
1968 ],[
1969         AC_DEFINE(HAVE_PAGEVEC_INIT_ONE_PARAM, 1,
1970                 ['pagevec_init' takes one parameter])
1971 ])
1972 ]) # LC_PAGEVEC_INIT_ONE_PARAM
1973
1974 #
1975 # LC_BI_BDEV
1976 #
1977 # 4.14 replaced bi_bdev to bi_disk
1978 #
1979 AC_DEFUN([LC_BI_BDEV], [
1980 LB_CHECK_COMPILE([if 'bi_bdev' exist],
1981 bi_bdev, [
1982         #include <linux/bio.h>
1983 ],[
1984         ((struct bio *)0)->bi_bdev = NULL;
1985 ],[
1986         AC_DEFINE(HAVE_BI_BDEV, 1,
1987                 ['bi_bdev' is available])
1988 ])
1989 ]) # LC_BI_BDEV
1990
1991 #
1992 # LC_IS_ENCRYPTED
1993 #
1994 # 4.14 introduced IS_ENCRYPTED and S_ENCRYPTED
1995 #
1996 AC_DEFUN([LC_IS_ENCRYPTED], [
1997 LB_CHECK_COMPILE([if IS_ENCRYPTED is defined],
1998 is_encrypted, [
1999         #include <linux/fs.h>
2000 ],[
2001         IS_ENCRYPTED((struct inode *)0);
2002 ],[
2003         has_is_encrypted="yes"
2004 ])
2005 ]) # LC_IS_ENCRYPTED
2006
2007 #
2008 # LC_I_PAGES
2009 #
2010 # kernel 4.17 commit b93b016313b3ba8003c3b8bb71f569af91f19fc7
2011 #
2012 AC_DEFUN([LC_I_PAGES], [
2013 LB_CHECK_COMPILE([if struct address_space has i_pages],
2014 i_pages, [
2015         #include <linux/fs.h>
2016 ],[
2017         struct address_space mapping = {};
2018         void *i_pages;
2019
2020         i_pages = &mapping.i_pages;
2021 ],[
2022         AC_DEFINE(HAVE_I_PAGES, 1,
2023                 [struct address_space has i_pages])
2024 ])
2025 ]) # LC_I_PAGES
2026
2027 #
2028 # LC_VM_FAULT_T
2029 #
2030 # kernel 4.17 commit 3d3539018d2cbd12e5af4a132636ee7fd8d43ef0
2031 # mm: create the new vm_fault_t type
2032 #
2033 AC_DEFUN([LC_VM_FAULT_T], [
2034 LB_CHECK_COMPILE([if vm_fault_t type exists],
2035 vm_fault_t, [
2036         #include <linux/mm_types.h>
2037 ],[
2038         vm_fault_t x = VM_FAULT_SIGBUS;
2039         (void)x
2040 ],[
2041         AC_DEFINE(HAVE_VM_FAULT_T, 1,
2042                 [if vm_fault_t type exists])
2043 ])
2044 ]) # LC_VM_FAULT_T
2045
2046 #
2047 # LC_VM_FAULT_RETRY
2048 #
2049 # kernel 4.17 commit 3d3539018d2cbd12e5af4a132636ee7fd8d43ef0
2050 # mm: VM_FAULT_RETRY is defined in enum vm_fault_reason
2051 #
2052 AC_DEFUN([LC_VM_FAULT_RETRY], [
2053 LB_CHECK_COMPILE([if VM_FAULT_RETRY is defined],
2054 VM_FAULT_RETRY, [
2055         #include <linux/mm.h>
2056 ],[
2057         #ifndef VM_FAULT_RETRY
2058                 vm_fault_t x;
2059                 x = VM_FAULT_RETRY;
2060         #endif
2061 ],[
2062         AC_DEFINE(HAVE_VM_FAULT_RETRY, 1,
2063                 [if VM_FAULT_RETRY is defined])
2064 ])
2065 ]) # LC_VM_FAULT_RETRY
2066
2067 #
2068 # LC_INODE_TIMESPEC64
2069 #
2070 # kernel 4.17-rc7 commit 8efd6894ff089adeeac7cb9f32125b85d963d1bc
2071 # fs: add timespec64_truncate()
2072 # kernel 4.18 commit 95582b00838837fc07e042979320caf917ce3fe6
2073 # inode timestamps switched to timespec64
2074 # kernel 4.19-rc2 commit 976516404ff3fab2a8caa8bd6f5efc1437fed0b8
2075 # y2038: remove unused time interfaces
2076 # ...
2077 #  timespec_trunc
2078 # ...
2079 # When inode times are timespec64 stop using the deprecated
2080 # time interfaces.
2081 #
2082 # kernel v5.5-rc1-6-gba70609d5ec6 ba70609d5ec664a8f36ba1c857fcd97a478adf79
2083 # fs: Delete timespec64_trunc()
2084 #
2085 AC_DEFUN([LC_INODE_TIMESPEC64], [
2086 tmp_flags="$EXTRA_KCFLAGS"
2087 EXTRA_KCFLAGS="-Werror"
2088 LB_CHECK_COMPILE([if inode timestamps are struct timespec64],
2089 inode_timespec64, [
2090         #include <linux/fs.h>
2091 ],[
2092         struct inode *inode = NULL;
2093         struct timespec64 ts = {0, 1};
2094
2095         inode->i_atime = ts;
2096         (void)inode;
2097 ],[
2098         AC_DEFINE(HAVE_INODE_TIMESPEC64, 1,
2099                 [inode times are using timespec64])
2100 ])
2101 EXTRA_KCFLAGS="$tmp_flags"
2102 ]) # LC_INODE_TIMESPEC64
2103
2104 #
2105 # LC___XA_SET_MARK
2106 #
2107 # kernel 4.20 commit v4.19-rc5-248-g9b89a0355144
2108 # xarray: Add XArray marks - replaced radix_tree_tag_set
2109 #
2110 AC_DEFUN([LC___XA_SET_MARK], [
2111 tmp_flags="$EXTRA_KCFLAGS"
2112 EXTRA_KCFLAGS="-Werror"
2113 LB_CHECK_COMPILE([if '__xa_set_mark' exists],
2114 __xa_set_mark, [
2115         #include <linux/fs.h>
2116         #include <linux/radix-tree.h>
2117 ],[
2118         radix_tree_tag_set(NULL, 0, PAGECACHE_TAG_DIRTY);
2119 ],[
2120         AC_DEFINE(HAVE_RADIX_TREE_TAG_SET, 1,
2121                 [__xa_set_mark exists])
2122 ])
2123 EXTRA_KCFLAGS="$tmp_flags"
2124 ]) # LC___XA_SET_MARK
2125
2126 #
2127 # LC_UAPI_LINUX_MOUNT_H
2128 #
2129 # kernel 4.20 commit e262e32d6bde0f77fb0c95d977482fc872c51996
2130 # vfs: Suppress MS_* flag defs within the kernel ...
2131 #
2132 AC_DEFUN([LC_UAPI_LINUX_MOUNT_H], [
2133 tmp_flags="$EXTRA_KCFLAGS"
2134 EXTRA_KCFLAGS="-Werror"
2135 LB_CHECK_COMPILE([if MS_RDONLY was moved to uapi/linux/mount.h],
2136 uapi_linux_mount, [
2137         #include <uapi/linux/mount.h>
2138 ],[
2139         int x = MS_RDONLY;
2140         (void)x;
2141 ],[
2142         AC_DEFINE(HAVE_UAPI_LINUX_MOUNT_H, 1,
2143                 [if MS_RDONLY was moved to uapi/linux/mount.h])
2144 ])
2145 EXTRA_KCFLAGS="$tmp_flags"
2146 ]) # LC_UAPI_LINUX_MOUNT_H
2147
2148 #
2149 # LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2150 #
2151 # kernel 4.20 commit 1863d77f15da0addcd293a1719fa5d3ef8cde3ca
2152 # SUNRPC: Replace the cache_detail->hash_lock with a regular spinlock
2153 #
2154 # Now that the reader functions are all RCU protected, use a regular
2155 # spinlock rather than a reader/writer lock.
2156 #
2157 AC_DEFUN([LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK], [
2158 tmp_flags="$EXTRA_KCFLAGS"
2159 EXTRA_KCFLAGS="-Werror"
2160 LB_CHECK_COMPILE([if cache_detail->hash_lock is a spinlock],
2161 hash_lock_isa_spinlock_t, [
2162         #include <linux/sunrpc/cache.h>
2163 ],[
2164         spinlock_t *lock = &(((struct cache_detail *)0)->hash_lock);
2165         spin_lock(lock);
2166 ],[
2167         AC_DEFINE(HAVE_CACHE_HASH_SPINLOCK, 1,
2168                 [if cache_detail->hash_lock is a spinlock])
2169 ])
2170 EXTRA_KCFLAGS="$tmp_flags"
2171 ]) # LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2172
2173 #
2174 # LC_HAS_LINUX_SELINUX_ENABLED
2175 #
2176 # kernel 5.1 commit 3d252529480c68bfd6a6774652df7c8968b28e41
2177 # SELinux: Remove unused selinux_is_enabled
2178 #
2179 AC_DEFUN([LC_HAS_LINUX_SELINUX_ENABLED], [
2180 tmp_flags="$EXTRA_KCFLAGS"
2181 EXTRA_KCFLAGS="-Werror"
2182 LB_CHECK_COMPILE([if linux/selinux.h exists],
2183 selinux_is_enabled, [
2184         #include <linux/selinux.h>
2185 ],[
2186         bool has_selinux = selinux_is_enabled();
2187         (void)has_selinux;
2188 ],[
2189         AC_DEFINE(HAVE_LINUX_SELINUX_IS_ENABLED, 1,
2190                 [if linux/selinux.h exists])
2191 ])
2192 EXTRA_KCFLAGS="$tmp_flags"
2193 ]) # LC_HAS_LINUX_SELINUX_ENABLED
2194
2195 #
2196 # LB_HAVE_BVEC_ITER_ALL
2197 #
2198 # kernel 5.1 commit 6dc4f100c175dd0511ae8674786e7c9006cdfbfa
2199 # block: allow bio_for_each_segment_all() to iterate over multi-page bvec
2200 #
2201 AC_DEFUN([LB_HAVE_BVEC_ITER_ALL], [
2202 tmp_flags="$EXTRA_KCFLAGS"
2203 EXTRA_KCFLAGS="-Werror"
2204 LB_CHECK_COMPILE([if bvec_iter_all exists for multi-page bvec iternation],
2205 ext4fs_dirhash, [
2206         #include <linux/bvec.h>
2207 ],[
2208         struct bvec_iter_all iter;
2209         (void)iter;
2210 ],[
2211         AC_DEFINE(HAVE_BVEC_ITER_ALL, 1,
2212                 [if bvec_iter_all exists for multi-page bvec iternation])
2213 ])
2214 EXTRA_KCFLAGS="$tmp_flags"
2215 ]) # LB_HAVE_BVEC_ITER_ALL
2216
2217 #
2218 # LC_ACCOUNT_PAGE_DIRTIED
2219 #
2220 # After 5.2 kernel page dirtied is not exported
2221 #
2222 AC_DEFUN([LC_ACCOUNT_PAGE_DIRTIED], [
2223 LB_CHECK_EXPORT([account_page_dirtied], [mm/page-writeback.c],
2224         [AC_DEFINE(HAVE_ACCOUNT_PAGE_DIRTIED_EXPORT, 1,
2225                         [account_page_dirtied is exported])])
2226 ]) # LC_ACCOUNT_PAGE_DIRTIED
2227
2228 #
2229 # LC_KEYRING_SEARCH_4ARGS
2230 #
2231 # Kernel 5.2 commit dcf49dbc8077
2232 # keys: Add a 'recurse' flag for keyring searches
2233 #
2234 AC_DEFUN([LC_KEYRING_SEARCH_4ARGS], [
2235 LB_CHECK_COMPILE([if 'keyring_search' has 4 args],
2236 keyring_search_4args, [
2237         #include <linux/key.h>
2238 ],[
2239         key_ref_t keyring;
2240         keyring_search(keyring, NULL, NULL, false);
2241 ],[
2242         AC_DEFINE(HAVE_KEYRING_SEARCH_4ARGS, 1,
2243                 [keyring_search has 4 args])
2244 ])
2245 ]) # LC_KEYRING_SEARCH_4ARGS
2246
2247 #
2248 # LC_BIO_BI_PHYS_SEGMENTS
2249 #
2250 # kernel 5.3-rc1 commit 14ccb66b3f585b2bc21e7256c96090abed5a512c
2251 # block: remove the bi_phys_segments field in struct bio
2252 #
2253 AC_DEFUN([LC_BIO_BI_PHYS_SEGMENTS], [
2254 tmp_flags="$EXTRA_KCFLAGS"
2255 EXTRA_KCFLAGS="-Werror"
2256 LB_CHECK_COMPILE([if struct bio has bi_phys_segments member],
2257 bye_bio_bi_phys_segments, [
2258         #include <linux/bio.h>
2259 ],[
2260         struct bio *bio = NULL;
2261         bio->bi_phys_segments++;
2262 ],[
2263         AC_DEFINE(HAVE_BIO_BI_PHYS_SEGMENTS, 1,
2264                 [struct bio has bi_phys_segments member])
2265 ])
2266 EXTRA_KCFLAGS="$tmp_flags"
2267 ]) # LC_BIO_BI_PHYS_SEGMENTS
2268
2269 #
2270 # LC_LM_COMPARE_OWNER_EXISTS
2271 #
2272 # kernel 5.3-rc3 commit f85d93385e9fe6886a751f647f6812a89bf6bee3
2273 # locks: Cleanup lm_compare_owner and lm_owner_key
2274 # removed lm_compare_owner
2275 #
2276 AC_DEFUN([LC_LM_COMPARE_OWNER_EXISTS], [
2277 tmp_flags="$EXTRA_KCFLAGS"
2278 EXTRA_KCFLAGS="-Werror"
2279 LB_CHECK_COMPILE([if lock_manager_operations has lm_compare_owner],
2280 lock_manager_ops_lm_compare_owner, [
2281         #include <linux/fs.h>
2282 ],[
2283         struct lock_manager_operations lm_ops;
2284         lm_ops.lm_compare_owner = NULL;
2285 ],[
2286         AC_DEFINE(HAVE_LM_COMPARE_OWNER, 1,
2287                 [lock_manager_operations has lm_compare_owner])
2288 ])
2289 EXTRA_KCFLAGS="$tmp_flags"
2290 ]) # LC_LM_COMPARE_OWNER_EXISTS
2291
2292 AC_DEFUN([LC_PROG_LINUX_SRC], [])
2293 AC_DEFUN([LC_PROG_LINUX_RESULTS], [])
2294
2295 #
2296 # LC_FSCRYPT_SUPPORT
2297 #
2298 # 5.4 introduced fscrypt encryption policies v2
2299 #
2300 AC_DEFUN([LC_FSCRYPT_SUPPORT], [
2301 LB_CHECK_COMPILE([for fscrypt in-kernel support],
2302 fscrypt_support, [
2303         #define __FS_HAS_ENCRYPTION 0
2304         #include <linux/fscrypt.h>
2305 ],[
2306         fscrypt_ioctl_get_policy_ex(NULL, NULL);
2307 ],[
2308         dnl When Lustre supports file name encryption, restore "yes" value
2309         dnl for has_fscrypt_support and remove warning message.
2310         has_fscrypt_support="no"
2311         AC_MSG_WARN([
2312 This version of Lustre lacks file name encryption support,
2313 so it cannot make use of in-kernel fscrypt.
2314 Will use embedded llcrypt if possible.])
2315 ])
2316 ]) # LC_FSCRYPT_SUPPORT
2317
2318 #
2319 # LC_PROG_LINUX
2320 #
2321 # Lustre linux kernel checks
2322 #
2323 AC_DEFUN([LC_PROG_LINUX], [
2324         AC_MSG_NOTICE([Lustre kernel checks
2325 ==============================================================================])
2326
2327         LC_CONFIG_PINGER
2328         LC_CONFIG_CHECKSUM
2329         LC_CONFIG_FLOCK
2330         LC_CONFIG_HEALTH_CHECK_WRITE
2331         LC_CONFIG_LRU_RESIZE
2332         LC_CONFIG_FHANDLE
2333         LC_CONFIG_GSS
2334
2335         LC_GLIBC_SUPPORT_FHANDLES
2336         LC_GLIBC_SUPPORT_COPY_FILE_RANGE
2337         LC_OPENSSL_SSK
2338         LC_OPENSSL_GETSEPOL
2339
2340         # 3.10
2341         LC_HAVE_PROJECT_QUOTA
2342
2343         # 3.11
2344         LC_INVALIDATE_RANGE
2345         LC_HAVE_DIR_CONTEXT
2346         LC_D_COMPARE_5ARGS
2347         LC_HAVE_DCOUNT
2348         LC_HAVE_DENTRY_D_U_D_ALIAS
2349         LC_HAVE_DENTRY_D_CHILD
2350         LC_PID_NS_FOR_CHILDREN
2351
2352         # 3.12
2353         LC_OLDSIZE_TRUNCATE_PAGECACHE
2354         LC_PTR_ERR_OR_ZERO_MISSING
2355         LC_KIOCB_KI_LEFT
2356
2357         # 3.13
2358         LC_VFS_RENAME_5ARGS
2359         LC_VFS_UNLINK_3ARGS
2360         LC_HAVE_D_IS_POSITIVE
2361
2362         # 3.14
2363         LC_HAVE_BVEC_ITER
2364         LC_HAVE_TRUNCATE_IPAGES_FINAL
2365         LC_IOPS_RENAME_WITH_FLAGS
2366         LC_IOP_SET_ACL
2367
2368         # 3.15
2369         LC_VFS_RENAME_6ARGS
2370
2371         # 3.16
2372         LC_DIRECTIO_USE_ITER
2373         LC_HAVE_IOV_ITER_INIT_DIRECTION
2374         LC_HAVE_IOV_ITER_TRUNCATE
2375         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
2376
2377         # 3.17
2378         LC_HAVE_INTERVAL_BLK_INTEGRITY
2379         LC_KEY_MATCH_DATA
2380
2381         # 3.18
2382         LC_PERCPU_COUNTER_INIT
2383         LC_NFS_FILLDIR_USE_CTX
2384
2385         # 3.19
2386         LC_KIOCB_HAS_NBYTES
2387         LC_HAVE_DQUOT_QC_DQBLK
2388         LC_HAVE_AIO_COMPLETE
2389         LC_HAVE_IS_ROOT_INODE
2390
2391         # 3.20
2392         LC_BACKING_DEV_INFO_REMOVAL
2393         LC_HAVE_BDI_CAP_MAP_COPY
2394
2395         # 4.1.0
2396         LC_IOV_ITER_RW
2397         LC_HAVE_SYNC_READ_WRITE
2398         LC_HAVE___BI_CNT
2399
2400         # 4.2
2401         LC_BIO_ENDIO_USES_ONE_ARG
2402         LC_SYMLINK_OPS_USE_NAMEIDATA
2403         LC_ACCOUNT_PAGE_DIRTIED_3ARGS
2404         LC_HAVE_CRYPTO_ALLOC_SKCIPHER
2405
2406         # 4.3
2407         LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
2408         LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
2409         LC_HAVE_CACHE_HEAD_HLIST
2410         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2411
2412         # 4.4
2413         LC_HAVE_LOCKS_LOCK_FILE_WAIT
2414         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2415         LC_HAVE_XATTR_HANDLER_NAME
2416         LC_HAVE_BI_OPF
2417         LC_HAVE_SUBMIT_BIO_2ARGS
2418         LC_HAVE_CLEAN_BDEV_ALIASES
2419
2420         # 4.5
2421         LC_HAVE_FILE_DENTRY
2422
2423         # 4.5
2424         LC_HAVE_INODE_LOCK
2425         LC_HAVE_IOP_GET_LINK
2426
2427         # 4.6
2428         LC_HAVE_IN_COMPAT_SYSCALL
2429         LC_HAVE_XATTR_HANDLER_INODE_PARAM
2430         LC_LOCK_PAGE_MEMCG
2431
2432         # 4.7
2433         LC_D_IN_LOOKUP
2434         LC_DIRECTIO_2ARGS
2435         LC_GENERIC_WRITE_SYNC_2ARGS
2436         LC_FOP_ITERATE_SHARED
2437
2438         # 4.8
2439         LC_EXPORT_DEFAULT_FILE_SPLICE_READ
2440         LC_HAVE_POSIX_ACL_VALID_USER_NS
2441         LC_D_COMPARE_4ARGS
2442         LC_FULL_NAME_HASH_3ARGS
2443         LC_STRUCT_POSIX_ACL_XATTR
2444         LC_IOP_XATTR
2445
2446         # 4.9
2447         LC_GROUP_INFO_GID
2448         LC_VFS_SETXATTR
2449         LC_POSIX_ACL_UPDATE_MODE
2450
2451         # 4.10
2452         LC_IOP_GENERIC_READLINK
2453         LC_HAVE_VM_FAULT_ADDRESS
2454
2455         # 4.11
2456         LC_INODEOPS_ENHANCED_GETATTR
2457         LC_VM_OPERATIONS_REMOVE_VMF_ARG
2458         LC_HAVE_KEY_USAGE_REFCOUNT
2459         LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2460
2461         # 4.12
2462         LC_CURRENT_TIME
2463         LC_SUPER_BLOCK_S_UUID
2464         LC_SUPER_SETUP_BDI_NAME
2465         LC_BI_STATUS
2466
2467         # 4.13
2468         LC_BIO_INTEGRITY_ENABLED
2469
2470         # 4.14
2471         LC_PAGEVEC_INIT_ONE_PARAM
2472         LC_BI_BDEV
2473
2474         # 4.17
2475         LC_VM_FAULT_T
2476         LC_VM_FAULT_RETRY
2477         LC_I_PAGES
2478
2479         # 4.18
2480         LC_INODE_TIMESPEC64
2481
2482         # 4.20
2483         LC___XA_SET_MARK
2484         LC_UAPI_LINUX_MOUNT_H
2485         LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2486
2487         # 5.1
2488         LC_HAS_LINUX_SELINUX_ENABLED
2489         LB_HAVE_BVEC_ITER_ALL
2490
2491         # 5.2
2492         LC_ACCOUNT_PAGE_DIRTIED
2493         LC_KEYRING_SEARCH_4ARGS
2494
2495         # 5.3
2496         LC_BIO_BI_PHYS_SEGMENTS
2497         LC_LM_COMPARE_OWNER_EXISTS
2498
2499         # kernel patch to extend integrity interface
2500         LC_BIO_INTEGRITY_PREP_FN
2501
2502         #
2503         AS_IF([test "x$enable_server" != xno], [
2504                 LC_STACK_SIZE
2505                 LC_QUOTA_CONFIG
2506         ])
2507         LC_POSIX_ACL_CONFIG
2508 ]) # LC_PROG_LINUX
2509
2510 #
2511 # LC_CONFIG_CLIENT
2512 #
2513 # Check whether to build the client side of Lustre
2514 #
2515 AC_DEFUN([LC_CONFIG_CLIENT], [
2516 AC_MSG_CHECKING([whether to build Lustre client support])
2517 AC_ARG_ENABLE([client],
2518         AC_HELP_STRING([--disable-client],
2519                 [disable Lustre client support]),
2520         [], [enable_client="yes"])
2521 AC_MSG_RESULT([$enable_client])
2522 ]) # LC_CONFIG_CLIENT
2523
2524 #
2525 # --enable-mpitests
2526 #
2527 AC_DEFUN([LB_CONFIG_MPITESTS], [
2528 AC_ARG_ENABLE([mpitests],
2529         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
2530                        [include mpi tests]), [
2531                 enable_mpitests="yes"
2532                 case $enableval in
2533                 yes)
2534                         MPICC_WRAPPER="mpicc"
2535                         MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
2536                         ;;
2537                 no)
2538                         enable_mpitests="no"
2539                         MPI_BIN=""
2540                         ;;
2541                 *)
2542                         MPICC_WRAPPER=$enableval
2543                         MPI_BIN=$(eval echo $MPICC_WRAPPER | xargs dirname)
2544                         ;;
2545                 esac
2546         ], [
2547                 enable_mpitests="yes"
2548                 MPICC_WRAPPER="mpicc"
2549                 MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
2550         ])
2551
2552         if test "x$enable_mpitests" != "xno"; then
2553                 oldcc=$CC
2554                 CC=$MPICC_WRAPPER
2555                 AC_CACHE_CHECK([whether mpitests can be built],
2556                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2557                         #include <mpi.h>
2558                         int main(void) {
2559                                 int flag;
2560                                 MPI_Initialized(&flag);
2561                                 return 0;
2562                         }
2563                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
2564                 ])
2565                 enable_mpitests=$lb_cv_mpi_tests
2566                 CC=$oldcc
2567         fi
2568         AC_SUBST(MPI_BIN)
2569         AC_SUBST(MPICC_WRAPPER)
2570 ]) # LB_CONFIG_MPITESTS
2571
2572 #
2573 # LC_CONFIG_QUOTA
2574 #
2575 # whether to enable quota support global control
2576 #
2577 AC_DEFUN([LC_CONFIG_QUOTA], [
2578 AC_MSG_CHECKING([whether to enable quota support global control])
2579 AC_ARG_ENABLE([quota],
2580         AC_HELP_STRING([--enable-quota],
2581                 [enable quota support]),
2582         [], [enable_quota="yes"])
2583 AS_IF([test "x$enable_quota" = xyes],
2584         [AC_MSG_RESULT([yes])],
2585         [AC_MSG_RESULT([no])])
2586 ]) # LC_CONFIG_QUOTA
2587
2588 #
2589 # LC_QUOTA
2590 #
2591 AC_DEFUN([LC_QUOTA], [
2592 #check global
2593 LC_CONFIG_QUOTA
2594 #check for utils
2595 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
2596         AC_CHECK_HEADER([sys/quota.h],
2597                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
2598                         [Define to 1 if you have <sys/quota.h>.])],
2599                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2600 ])
2601 ]) # LC_QUOTA
2602
2603 #
2604 # LC_OSD_ADDON
2605 #
2606 # configure support for optional OSD implementation
2607 #
2608 AC_DEFUN([LC_OSD_ADDON], [
2609 AC_MSG_CHECKING([whether to use OSD addon])
2610 AC_ARG_WITH([osd],
2611         AC_HELP_STRING([--with-osd=path],
2612                 [set path to optional osd]),
2613         [
2614         case "$with_osd" in
2615         no)
2616                 ENABLEOSDADDON=0
2617                 ;;
2618         *)
2619                 OSDADDON="$with_osd"
2620                 ENABLEOSDADDON=1
2621                 ;;
2622         esac
2623         ], [
2624                 ENABLEOSDADDON=0
2625         ])
2626 AS_IF([test $ENABLEOSDADDON -eq 0], [
2627         AC_MSG_RESULT([no])
2628         OSDADDON=""
2629 ], [
2630         OSDMODNAME=$(basename $OSDADDON)
2631         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
2632                 AC_MSG_RESULT([can't link])
2633                 OSDADDON=""
2634         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
2635                 AC_MSG_RESULT([$OSDMODNAME])
2636                 OSDADDON="obj-m += $OSDMODNAME/"
2637         ], [
2638                 AC_MSG_RESULT([can't link])
2639                 OSDADDON=""
2640         ])
2641 ])
2642 AC_SUBST(OSDADDON)
2643 ]) # LC_OSD_ADDON
2644
2645 #
2646 # LC_CONFIG_CRYPTO
2647 #
2648 # Check whether to enable Lustre client crypto
2649 #
2650 AC_DEFUN([LC_CONFIG_CRYPTO], [
2651 AC_MSG_CHECKING([whether to enable Lustre client crypto])
2652 AC_ARG_ENABLE([crypto],
2653         AC_HELP_STRING([--enable-crypto],
2654                 [enable Lustre client crypto]),
2655         [], [enable_crypto="auto"])
2656 AS_IF([test "x$enable_crypto" != xno -a "x$enable_dist" = xno], [
2657         AC_MSG_RESULT(
2658         )
2659         LC_IS_ENCRYPTED
2660         LC_FSCRYPT_SUPPORT])
2661 AS_IF([test "x$has_fscrypt_support" = xyes], [
2662         AC_DEFINE(HAVE_LUSTRE_CRYPTO, 1, [Enable Lustre client crypto via in-kernel fscrypt])
2663         enable_crypto=yes],
2664         [AS_IF([test "x$has_is_encrypted" = xyes], [
2665               AC_DEFINE(HAVE_LUSTRE_CRYPTO, 1, [Enable Lustre client crypto via embedded llcrypt])
2666               AC_DEFINE(CONFIG_LL_ENCRYPTION, 1, [embedded llcrypt])
2667               enable_crypto=yes
2668               enable_llcrypt=yes], [
2669               AS_IF([test "x$enable_crypto" = xyes],
2670                     [AC_MSG_ERROR([Lustre client crypto cannot be enabled because of lack of encryption support in your kernel.])])
2671               AS_IF([test "x$enable_crypto" != xno -a "x$enable_dist" = xno],
2672                     [AC_MSG_WARN(Lustre client crypto cannot be enabled because of lack of encryption support in your kernel.)])
2673               enable_crypto=no])])
2674 AS_IF([test "x$enable_dist" != xno], [
2675         enable_crypto=yes
2676         enable_llcrypt=yes])
2677 AC_MSG_RESULT([$enable_crypto])
2678 ]) # LC_CONFIG_CRYPTO
2679
2680 #
2681 # LC_CONFIGURE
2682 #
2683 # other configure checks
2684 #
2685 AC_DEFUN([LC_CONFIGURE], [
2686 AC_MSG_NOTICE([Lustre core checks
2687 ==============================================================================])
2688
2689 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
2690         [CFLAGS="$CFLAGS -Wall -Werror"])
2691
2692 # maximum MDS thread count
2693 LC_MDS_MAX_THREADS
2694
2695 # lustre/utils/gss/gss_util.c
2696 # lustre/utils/gss/gssd_proc.c
2697 # lustre/utils/gss/krb5_util.c
2698 # lustre/utils/llog_reader.c
2699 # lustre/utils/create_iam.c
2700 # lustre/utils/libiam.c
2701 AC_CHECK_HEADERS([netdb.h endian.h])
2702 AC_CHECK_FUNCS([gethostbyname])
2703
2704 # lustre/utils/llverfs.c lustre/utils/libmount_utils_ldiskfs.c
2705 AC_CHECK_HEADERS([ext2fs/ext2fs.h], [], [
2706         AS_IF([test "x$enable_utils" = xyes -a "x$enable_ldiskfs" = xyes], [
2707                 AC_MSG_ERROR([
2708 ext2fs.h not found. Please install e2fsprogs development package.
2709                 ])
2710         ])
2711 ])
2712
2713 # lustre/tests/statx_test.c
2714 AC_CHECK_FUNCS([statx])
2715
2716 # lustre/utils/lfs.c
2717 AS_IF([test "$enable_dist" = "no"], [
2718                 AC_CHECK_LIB([z], [crc32], [
2719                                  AC_CHECK_HEADER([zlib.h], [], [
2720                                                  AC_MSG_ERROR([zlib.h not found.])])
2721                                  ], [
2722                                  AC_MSG_ERROR([
2723                 zlib library not found. Please install zlib development package.])
2724                 ])
2725 ])
2726
2727 SELINUX=""
2728
2729 AC_CHECK_LIB([selinux], [is_selinux_enabled],
2730         [AC_CHECK_HEADERS([selinux/selinux.h],
2731                         [SELINUX="-lselinux"
2732                         AC_DEFINE([HAVE_SELINUX], 1,
2733                                 [support for selinux ])],
2734                         [AC_MSG_WARN([
2735
2736 No libselinux-devel package found, unable to build selinux enabled tools
2737 ])
2738 ])],
2739         [AC_MSG_WARN([
2740
2741 No selinux package found, unable to build selinux enabled tools
2742 ])
2743 ])
2744 AC_SUBST(SELINUX)
2745
2746 AC_CHECK_LIB([keyutils], [add_key])
2747
2748 # Super safe df
2749 AC_MSG_CHECKING([whether to report minimum OST free space])
2750 AC_ARG_ENABLE([mindf],
2751         AC_HELP_STRING([--enable-mindf],
2752                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2753         [], [enable_mindf="no"])
2754 AC_MSG_RESULT([$enable_mindf])
2755 AS_IF([test "$enable_mindf" = "yes"],
2756         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
2757
2758 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2759 AC_ARG_ENABLE([fail_alloc],
2760         AC_HELP_STRING([--disable-fail-alloc],
2761                 [disable randomly alloc failure]),
2762         [], [enable_fail_alloc="yes"])
2763 AC_MSG_RESULT([$enable_fail_alloc])
2764 AS_IF([test "x$enable_fail_alloc" != xno],
2765         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
2766                 [enable randomly alloc failure])])
2767
2768 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2769 AC_ARG_ENABLE([invariants],
2770         AC_HELP_STRING([--enable-invariants],
2771                 [enable invariant checking (cpu intensive)]),
2772         [], [enable_invariants="no"])
2773 AC_MSG_RESULT([$enable_invariants])
2774 AS_IF([test "x$enable_invariants" = xyes],
2775         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
2776                 [enable invariant checking])])
2777
2778 AC_MSG_CHECKING([whether to track references with lu_ref])
2779 AC_ARG_ENABLE([lu_ref],
2780         AC_HELP_STRING([--enable-lu_ref],
2781                 [enable lu_ref reference tracking code]),
2782         [], [enable_lu_ref="no"])
2783 AC_MSG_RESULT([$enable_lu_ref])
2784 AS_IF([test "x$enable_lu_ref" = xyes],
2785         [AC_DEFINE([USE_LU_REF], 1,
2786                 [enable lu_ref reference tracking code])])
2787
2788 AC_MSG_CHECKING([whether to enable page state tracking])
2789 AC_ARG_ENABLE([pgstate-track],
2790         AC_HELP_STRING([--enable-pgstate-track],
2791                 [enable page state tracking]),
2792         [], [enable_pgstat_track="no"])
2793 AC_MSG_RESULT([$enable_pgstat_track])
2794 AS_IF([test "x$enable_pgstat_track" = xyes],
2795         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
2796                 [enable page state tracking code])])
2797
2798 PKG_PROG_PKG_CONFIG
2799 AC_MSG_CHECKING([systemd unit file directory])
2800 AC_ARG_WITH([systemdsystemunitdir],
2801         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
2802                 [Directory for systemd service files])],
2803         [], [with_systemdsystemunitdir=auto])
2804 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
2805         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
2806         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
2807                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
2808                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
2809                 with_systemdsystemunitdir=no],
2810         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
2811 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
2812         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
2813 AC_MSG_RESULT([$with_systemdsystemunitdir])
2814
2815 AC_MSG_CHECKING([bash-completion directory])
2816 AC_ARG_WITH([bash-completion-dir],
2817         AS_HELP_STRING([--with-bash-completion-dir[=PATH]],
2818                 [Install the bash auto-completion script in this directory.]),
2819         [],
2820         [with_bash_completion_dir=yes])
2821 AS_IF([test "x$with_bash_completion_dir" = "xyes"], [
2822         BASH_COMPLETION_DIR="`pkg-config --variable=completionsdir bash-completion`"
2823         AS_IF([test "x$BASH_COMPLETION_DIR" = "x"], [
2824                 [BASH_COMPLETION_DIR="/usr/share/bash-completion/completions"]
2825         ])
2826 ], [
2827         BASH_COMPLETION_DIR="$with_bash_completion_dir"
2828 ])
2829 AC_SUBST([BASH_COMPLETION_DIR])
2830 AC_MSG_RESULT([$BASH_COMPLETION_DIR])
2831 ]) # LC_CONFIGURE
2832
2833 #
2834 # LC_CONDITIONALS
2835 #
2836 # AM_CONDITIONALS for lustre
2837 #
2838 AC_DEFUN([LC_CONDITIONALS], [
2839 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2840 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2841 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2842 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2843 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2844 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2845 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2846 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2847 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
2848 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2849 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
2850 AM_CONDITIONAL(ENABLE_BASH_COMPLETION, test "x$with_bash_completion_dir" != "xno")
2851 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
2852 AM_CONDITIONAL(SELINUX, test "$SELINUX" = "-lselinux")
2853 AM_CONDITIONAL(GETSEPOL, test x$enable_getsepol = xyes)
2854 AM_CONDITIONAL(LLCRYPT, test x$enable_llcrypt = xyes)
2855 AM_CONDITIONAL(LIBAIO, test x$enable_libaio = xyes)
2856 ]) # LC_CONDITIONALS
2857
2858 #
2859 # LC_CONFIG_FILES
2860 #
2861 # files that should be generated with AC_OUTPUT
2862 #
2863 AC_DEFUN([LC_CONFIG_FILES],
2864 [AC_CONFIG_FILES([
2865 lustre/Makefile
2866 lustre/autoMakefile
2867 lustre/autoconf/Makefile
2868 lustre/conf/Makefile
2869 lustre/conf/resource/Makefile
2870 lustre/contrib/Makefile
2871 lustre/doc/Makefile
2872 lustre/include/Makefile
2873 lustre/include/lustre/Makefile
2874 lustre/include/uapi/linux/lustre/Makefile
2875 lustre/kernel_patches/targets/4.18-rhel8.3.target
2876 lustre/kernel_patches/targets/4.18-rhel8.2.target
2877 lustre/kernel_patches/targets/4.18-rhel8.1.target
2878 lustre/kernel_patches/targets/4.18-rhel8.target
2879 lustre/kernel_patches/targets/3.10-rhel7.9.target
2880 lustre/kernel_patches/targets/3.10-rhel7.8.target
2881 lustre/kernel_patches/targets/3.10-rhel7.7.target
2882 lustre/kernel_patches/targets/3.10-rhel7.6.target
2883 lustre/kernel_patches/targets/3.10-rhel7.5.target
2884 lustre/kernel_patches/targets/4.14-rhel7.5.target
2885 lustre/kernel_patches/targets/4.14-rhel7.6.target
2886 lustre/kernel_patches/targets/4.12-sles12sp4.target
2887 lustre/kernel_patches/targets/4.12-sles12sp5.target
2888 lustre/kernel_patches/targets/4.12-sles15sp1.target
2889 lustre/kernel_patches/targets/4.12-sles15sp2.target
2890 lustre/kernel_patches/targets/3.x-fc18.target
2891 lustre/ldlm/Makefile
2892 lustre/fid/Makefile
2893 lustre/fid/autoMakefile
2894 lustre/llite/Makefile
2895 lustre/llite/autoMakefile
2896 lustre/lov/Makefile
2897 lustre/lov/autoMakefile
2898 lustre/mdc/Makefile
2899 lustre/mdc/autoMakefile
2900 lustre/lmv/Makefile
2901 lustre/lmv/autoMakefile
2902 lustre/lfsck/Makefile
2903 lustre/lfsck/autoMakefile
2904 lustre/mdt/Makefile
2905 lustre/mdt/autoMakefile
2906 lustre/mdd/Makefile
2907 lustre/mdd/autoMakefile
2908 lustre/fld/Makefile
2909 lustre/fld/autoMakefile
2910 lustre/obdclass/Makefile
2911 lustre/obdclass/autoMakefile
2912 lustre/obdecho/Makefile
2913 lustre/obdecho/autoMakefile
2914 lustre/ofd/Makefile
2915 lustre/ofd/autoMakefile
2916 lustre/osc/Makefile
2917 lustre/osc/autoMakefile
2918 lustre/ost/Makefile
2919 lustre/ost/autoMakefile
2920 lustre/osd-ldiskfs/Makefile
2921 lustre/osd-ldiskfs/autoMakefile
2922 lustre/osd-zfs/Makefile
2923 lustre/osd-zfs/autoMakefile
2924 lustre/mgc/Makefile
2925 lustre/mgc/autoMakefile
2926 lustre/mgs/Makefile
2927 lustre/mgs/autoMakefile
2928 lustre/target/Makefile
2929 lustre/ptlrpc/Makefile
2930 lustre/ptlrpc/autoMakefile
2931 lustre/ptlrpc/gss/Makefile
2932 lustre/ptlrpc/gss/autoMakefile
2933 lustre/quota/Makefile
2934 lustre/quota/autoMakefile
2935 lustre/scripts/Makefile
2936 lustre/scripts/systemd/Makefile
2937 lustre/tests/Makefile
2938 lustre/tests/mpi/Makefile
2939 lustre/tests/kernel/Makefile
2940 lustre/tests/kernel/autoMakefile
2941 lustre/utils/Makefile
2942 lustre/utils/gss/Makefile
2943 lustre/osp/Makefile
2944 lustre/osp/autoMakefile
2945 lustre/lod/Makefile
2946 lustre/lod/autoMakefile
2947 ])
2948 ]) # LC_CONFIG_FILES