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 libcfs_is_module="yes"
   9 ldiskfs_is_ext4="yes"
  10 ])
  11
  12 #
  13 # LC_PATH_DEFAULTS
  14 #
  15 # lustre specific paths
  16 #
  17 AC_DEFUN([LC_PATH_DEFAULTS], [
  18 # ptlrpc kernel build requires this
  19 LUSTRE="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ]) # LC_PATH_DEFAULTS
  32
  33 #
  34 # LC_TARGET_SUPPORTED
  35 #
  36 # is the target os supported?
  37 #
  38 AC_DEFUN([LC_TARGET_SUPPORTED], [
  39 case $target_os in
  40         linux*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ]) # LC_TARGET_SUPPORTED
  48
  49 #
  50 # LC_GLIBC_SUPPORT_FHANDLES
  51 #
  52 AC_DEFUN([LC_GLIBC_SUPPORT_FHANDLES], [
  53 AC_CHECK_FUNCS([name_to_handle_at],
  54         [AC_DEFINE(HAVE_FHANDLE_GLIBC_SUPPORT, 1,
  55                 [file handle and related syscalls are supported])],
  56         [AC_MSG_WARN([file handle and related syscalls are not supported])])
  57 ]) # LC_GLIBC_SUPPORT_FHANDLES
  58
  59 #
  60 # LC_STACK_SIZE
  61 #
  62 # Ensure the stack size is at least 8k in Lustre server (all kernels)
  63 #
  64 AC_DEFUN([LC_STACK_SIZE], [
  65 LB_CHECK_COMPILE([if stack size is at least 8k],
  66 stack_size_8k, [
  67         #include <linux/thread_info.h>
  68 ], [
  69         #if THREAD_SIZE < 8192
  70         #error "stack size < 8192"
  71         #endif
  72 ], [], [AC_MSG_ERROR([
  73
  74 Lustre requires that Linux is configured with at least a 8KB stack.
  75 ])])
  76 ]) # LC_STACK_SIZE
  77
  78 #
  79 # LC_MDS_MAX_THREADS
  80 #
  81 # Allow the user to set the MDS thread upper limit
  82 #
  83 AC_DEFUN([LC_MDS_MAX_THREADS], [
  84 AC_MSG_CHECKING([for maximum number of MDS threads])
  85 AC_ARG_WITH([mds_max_threads],
  86         AC_HELP_STRING([--with-mds-max-threads=count],
  87                 [maximum threads available on the MDS: (default=512)]),
  88         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
  89                 [maximum number of MDS threads])])
  90 AC_MSG_RESULT([$with_mds_max_threads])
  91 ]) # LC_MDS_MAX_THREADS
  92
  93 #
  94 # LC_CONFIG_PINGER
  95 #
  96 # the pinger is temporary, until we have the recovery node in place
  97 #
  98 AC_DEFUN([LC_CONFIG_PINGER], [
  99 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 100 AC_ARG_ENABLE([pinger],
 101         AC_HELP_STRING([--disable-pinger],
 102                 [disable recovery pinger support]),
 103         [], [enable_pinger="yes"])
 104 AC_MSG_RESULT([$enable_pinger])
 105 AS_IF([test "x$enable_pinger" != xno],
 106         [AC_DEFINE(ENABLE_PINGER, 1,[Use the Pinger])])
 107 ]) # LC_CONFIG_PINGER
 108
 109 #
 110 # LC_CONFIG_CHECKSUM
 111 #
 112 # do checksum of bulk data between client and OST
 113 #
 114 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 115 AC_MSG_CHECKING([whether to enable data checksum support])
 116 AC_ARG_ENABLE([checksum],
 117         AC_HELP_STRING([--disable-checksum],
 118                 [disable data checksum support]),
 119         [], [enable_checksum="yes"])
 120 AC_MSG_RESULT([$enable_checksum])
 121 AS_IF([test "x$enable_checksum" != xno],
 122         [AC_DEFINE(ENABLE_CHECKSUM, 1, [do data checksums])])
 123 ]) # LC_CONFIG_CHECKSUM
 124
 125 #
 126 # LC_CONFIG_FLOCK
 127 #
 128 # enable distributed flock by default
 129 #
 130 AC_DEFUN([LC_CONFIG_FLOCK], [
 131 AC_MSG_CHECKING([whether to enable flock by default])
 132 AC_ARG_ENABLE([flock],
 133         AC_HELP_STRING([--disable-flock],
 134                 [disable flock by default]),
 135         [], [enable_flock="yes"])
 136 AC_MSG_RESULT([$enable_flock])
 137 AS_IF([test "x$enable_flock" != xno],
 138         [AC_DEFINE(ENABLE_FLOCK, 1, [enable flock by default])])
 139 ]) # LC_CONFIG_FLOCK
 140
 141 #
 142 # LC_CONFIG_HEALTH_CHECK_WRITE
 143 #
 144 # Turn off the actual write to the disk
 145 #
 146 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 147 AC_MSG_CHECKING([whether to enable a write with the health check])
 148 AC_ARG_ENABLE([health_write],
 149         AC_HELP_STRING([--enable-health_write],
 150                 [enable disk writes when doing health check]),
 151         [], [enable_health_write="no"])
 152 AC_MSG_RESULT([$enable_health_write])
 153 AS_IF([test "x$enable_health_write" != xno],
 154         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 155 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 156
 157 #
 158 # LC_CONFIG_LRU_RESIZE
 159 #
 160 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 161 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 162 AC_ARG_ENABLE([lru_resize],
 163         AC_HELP_STRING([--enable-lru-resize],
 164                 [enable lru resize support]),
 165         [], [enable_lru_resize="yes"])
 166 AC_MSG_RESULT([$enable_lru_resize])
 167 AS_IF([test "x$enable_lru_resize" != xno],
 168         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 169 ]) # LC_CONFIG_LRU_RESIZE
 170
 171 #
 172 # LC_QUOTA_CONFIG
 173 #
 174 # Quota support. The kernel must support CONFIG_QUOTA.
 175 #
 176 AC_DEFUN([LC_QUOTA_CONFIG], [
 177 LB_CHECK_CONFIG_IM([QUOTA], [],
 178         [AC_MSG_ERROR([
 179
 180 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 181 ])])
 182 ]) # LC_QUOTA_CONFIG
 183
 184 #
 185 # LC_CONFIG_FHANDLE
 186 #
 187 # fhandle kernel support for open_by_handle_at() and name_to_handle_at()
 188 # system calls. The kernel must support CONFIG_FHANDLE.
 189 #
 190 AC_DEFUN([LC_CONFIG_FHANDLE], [
 191 LB_CHECK_CONFIG_IM([FHANDLE], [],
 192         [AC_MSG_ERROR([
 193
 194 Lustre fid handling requires that CONFIG_FHANDLE is enabled in your kernel.
 195 ])])
 196 ]) # LC_CONFIG_FHANDLE
 197
 198 #
 199 # LC_POSIX_ACL_CONFIG
 200 #
 201 # POSIX ACL support.
 202 #
 203 AC_DEFUN([LC_POSIX_ACL_CONFIG], [
 204 LB_CHECK_CONFIG_IM([FS_POSIX_ACL],
 205         [AC_DEFINE(CONFIG_LUSTRE_FS_POSIX_ACL, 1, [Enable POSIX acl])
 206 ], [ ])
 207 ]) # LC_POSIX_ACL_CONFIG
 208
 209 LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 210                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 211
 212 #
 213 # LC_CONFIG_GSS_KEYRING
 214 #
 215 # default 'auto', tests for dependencies, if found, enables;
 216 # only called if gss is enabled
 217 #
 218 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 219 AC_MSG_CHECKING([whether to enable gss keyring backend])
 220 AC_ARG_ENABLE([gss_keyring],
 221         [AC_HELP_STRING([--disable-gss-keyring],
 222                 [disable gss keyring backend])],
 223         [], [enable_gss_keyring="auto"])
 224 AC_MSG_RESULT([$enable_gss_keyring])
 225 AS_IF([test "x$enable_gss_keyring" != xno], [
 226         LB_CHECK_CONFIG_IM([KEYS], [], [
 227                 gss_keyring_conf_test="fail"
 228                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 229
 230         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 231                 gss_keyring_conf_test="fail"
 232                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 233
 234         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 235                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 236                         [Define this if you enable gss keyring backend])
 237                 enable_gss_keyring="yes"
 238         ], [
 239                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 240                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 241                 ])
 242         ])
 243 ])
 244 ]) # LC_CONFIG_GSS_KEYRING
 245
 246 #
 247 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 248 #
 249 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 250 #
 251 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 252 LB_CHECK_COMPILE([if 'key_type->instantiate' has two args],
 253 key_type_instantiate_2args, [
 254         #include <linux/key-type.h>
 255 ],[
 256         ((struct key_type *)0)->instantiate(0, NULL);
 257 ],[
 258         AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 259                 [key_type->instantiate has two args])
 260 ])
 261 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 262
 263 #
 264 # LC_CONFIG_SUNRPC
 265 #
 266 AC_DEFUN([LC_CONFIG_SUNRPC], [
 267 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 268         AS_IF([test "x$sunrpc_required" = xyes], [
 269                 AC_MSG_ERROR([
 270
 271 kernel SUNRPC support is required by using GSS.
 272 ])
 273         ])])
 274 ]) # LC_CONFIG_SUNRPC
 275
 276 #
 277 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 278 #
 279 # Build gss and related tools of Lustre. Currently both kernel and user space
 280 # parts are depend on linux platform.
 281 #
 282 AC_DEFUN([LC_CONFIG_GSS], [
 283 AC_MSG_CHECKING([whether to enable gss support])
 284 AC_ARG_ENABLE([gss],
 285         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 286         [], [enable_gss="auto"])
 287 AC_MSG_RESULT([$enable_gss])
 288
 289 AS_IF([test "x$enable_gss" != xno], [
 290         LC_CONFIG_GSS_KEYRING
 291         LC_KEY_TYPE_INSTANTIATE_2ARGS
 292         sunrpc_required=$enable_gss
 293         LC_CONFIG_SUNRPC
 294         sunrpc_required="no"
 295
 296         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 297                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 298         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 299                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 300         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 301                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 302         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 303                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 304
 305         require_krb5=$enable_gss
 306         AC_KERBEROS_V5
 307         require_krb5="no"
 308
 309         AS_IF([test -n "$KRBDIR"], [
 310                 gss_conf_test="success"
 311         ], [
 312                 gss_conf_test="failure"
 313         ])
 314
 315         AS_IF([test "x$gss_conf_test" = xsuccess && test "x$enable_gss" != xno], [
 316                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 317                 enable_gss="yes"
 318         ], [
 319                 enable_gss_keyring="no"
 320                 enable_gss="no"
 321         ])
 322
 323         enable_ssk=$enable_gss
 324 ], [
 325         enable_gss_keyring="no"
 326 ])
 327 ]) # LC_CONFIG_GSS
 328
 329 # LC_OPENSSL_SSK
 330 #
 331 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 332 AC_DEFUN([LC_OPENSSL_SSK], [
 333 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 334 AS_IF([test "x$enable_ssk" != xno], [
 335 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 336         #include <openssl/hmac.h>
 337         #include <openssl/evp.h>
 338
 339         int main(void) {
 340                 int rc;
 341                 rc = HMAC_Init_ex(NULL, "test", 4, EVP_md_null(), NULL);
 342         }
 343 ])],[AC_DEFINE(HAVE_OPENSSL_SSK, 1,
 344                [OpenSSL HMAC functions needed for SSK])],
 345         [enable_ssk="no"])
 346 ])
 347 AC_MSG_RESULT([$enable_ssk])
 348 ]) # LC_OPENSSL_SSK
 349
 350 # LC_OPENSSL_GETSEPOL
 351 #
 352 # OpenSSL is needed for l_getsepol
 353 AC_DEFUN([LC_OPENSSL_GETSEPOL], [
 354 AC_MSG_CHECKING([whether openssl-devel is present])
 355 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 356         #include <openssl/evp.h>
 357
 358         int main(void) {
 359                 EVP_MD_CTX *mdctx = EVP_MD_CTX_create();
 360         }
 361 ])],[
 362         AC_DEFINE(HAVE_OPENSSL_GETSEPOL, 1, [openssl-devel is present])
 363         enable_getsepol="yes"
 364
 365 ],[
 366         enable_getsepol="no"
 367         AC_MSG_WARN([
 368
 369 No openssk-devel headers found, unable to build l_getsepol and SELinux status checking
 370 ])
 371 ])
 372 AC_MSG_RESULT([$enable_getsepol])
 373 ]) # LC_OPENSSL_GETSEPOL
 374
 375 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
 376 LB_CHECK_COMPILE([if get_projid exists],
 377 get_projid, [
 378         struct inode;
 379         #include <linux/quota.h>
 380 ],[
 381         struct dquot_operations ops = { };
 382
 383         ops.get_projid(NULL, NULL);
 384 ],[
 385         AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
 386                 [get_projid function exists])
 387 ])
 388 ]) # LC_HAVE_PROJECT_QUOTA
 389
 390 #
 391 # LC_INVALIDATE_RANGE
 392 #
 393 # 3.11 invalidatepage requires the length of the range to invalidate
 394 #
 395 AC_DEFUN([LC_INVALIDATE_RANGE], [
 396 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
 397 address_space_ops_invalidatepage_3args, [
 398         #include <linux/fs.h>
 399 ],[
 400         struct address_space_operations a_ops;
 401         a_ops.invalidatepage(NULL, 0, 0);
 402 ],[
 403         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
 404                 [address_space_operations.invalidatepage needs 3 arguments])
 405 ])
 406 ]) # LC_INVALIDATE_RANGE
 407
 408 #
 409 # LC_HAVE_DIR_CONTEXT
 410 #
 411 # 3.11 readdir now takes the new struct dir_context
 412 #
 413 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
 414 LB_CHECK_COMPILE([if 'dir_context' exist],
 415 dir_context, [
 416         #include <linux/fs.h>
 417 ],[
 418 #ifdef FMODE_KABI_ITERATE
 419 #error "back to use readdir in kabi_extand mode"
 420 #else
 421         struct dir_context ctx;
 422
 423         ctx.pos = 0;
 424 #endif
 425 ],[
 426         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
 427                 [dir_context exist])
 428 ])
 429 ]) # LC_HAVE_DIR_CONTEXT
 430
 431 #
 432 # LC_D_COMPARE_5ARGS
 433 #
 434 # 3.11 dentry_operations.d_compare() taken 5 arguments.
 435 #
 436 AC_DEFUN([LC_D_COMPARE_5ARGS], [
 437 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
 438 d_compare_5args, [
 439         #include <linux/dcache.h>
 440 ],[
 441         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
 442 ],[
 443         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
 444                 [d_compare need 5 arguments])
 445 ])
 446 ]) # LC_D_COMPARE_5ARGS
 447
 448 #
 449 # LC_HAVE_DCOUNT
 450 #
 451 # 3.11 need to access d_count to get dentry reference count
 452 #
 453 AC_DEFUN([LC_HAVE_DCOUNT], [
 454 LB_CHECK_COMPILE([if 'd_count' exists],
 455 d_count, [
 456         #include <linux/dcache.h>
 457 ],[
 458         struct dentry de = { };
 459         int count;
 460
 461         count = d_count(&de);
 462 ],[
 463         AC_DEFINE(HAVE_D_COUNT, 1,
 464                 [d_count exist])
 465 ])
 466 ]) # LC_HAVE_DCOUNT
 467
 468 #
 469 # LC_PID_NS_FOR_CHILDREN
 470 #
 471 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
 472 #
 473 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
 474 LB_CHECK_COMPILE([if 'struct nsproxy' has 'pid_ns_for_children'],
 475 pid_ns_for_children, [
 476         #include <linux/nsproxy.h>
 477 ],[
 478         struct nsproxy ns;
 479         ns.pid_ns_for_children = NULL;
 480 ],[
 481         AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
 482                   ['struct nsproxy' has 'pid_ns_for_children'])
 483 ])
 484 ]) # LC_PID_NS_FOR_CHILDREN
 485
 486 #
 487 # LC_OLDSIZE_TRUNCATE_PAGECACHE
 488 #
 489 # 3.12 truncate_pagecache without oldsize parameter
 490 #
 491 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
 492 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
 493 truncate_pagecache_old_size, [
 494         #include <linux/mm.h>
 495 ],[
 496         truncate_pagecache(NULL, 0, 0);
 497 ],[
 498         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
 499                 [with oldsize])
 500 ])
 501 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
 502
 503 #
 504 # LC_PTR_ERR_OR_ZERO
 505 #
 506 # For some reason SLES11SP4 is missing the PTR_ERR_OR_ZERO macro
 507 # It was added to linux kernel 3.12
 508 #
 509 AC_DEFUN([LC_PTR_ERR_OR_ZERO_MISSING], [
 510 LB_CHECK_COMPILE([if 'PTR_ERR_OR_ZERO' is missing],
 511 is_err_or_null, [
 512         #include <linux/err.h>
 513 ],[
 514         if (PTR_ERR_OR_ZERO(NULL)) return 0;
 515 ],[
 516         AC_DEFINE(HAVE_PTR_ERR_OR_ZERO, 1,
 517                 ['PTR_ERR_OR_ZERO' exist])
 518 ])
 519 ]) # LC_PTR_ERR_OR_ZERO_MISSING
 520
 521 #
 522 # LC_HAVE_DENTRY_D_U_D_ALIAS
 523 #
 524 # 3.11 kernel moved d_alias to the union d_u in struct dentry
 525 #
 526 # Some distros move d_alias to d_u but it is still a struct list
 527 #
 528 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
 529 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
 530         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
 531         d_alias, [
 532                 #include <linux/list.h>
 533                 #include <linux/dcache.h>
 534         ],[
 535                 struct dentry de;
 536                 INIT_LIST_HEAD(&de.d_u.d_alias);
 537         ],[
 538                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
 539                         [list dentry.d_u.d_alias exist])
 540         ])
 541 ],[
 542         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
 543         d_alias, [
 544                 #include <linux/list.h>
 545                 #include <linux/dcache.h>
 546         ],[
 547                 struct dentry de;
 548                 INIT_HLIST_NODE(&de.d_u.d_alias);
 549         ],[
 550                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
 551                         [hlist dentry.d_u.d_alias exist])
 552         ])
 553 ])
 554 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
 555
 556 #
 557 # LC_HAVE_DENTRY_D_CHILD
 558 #
 559 # 3.11 kernel d_child has been moved out of the union d_u
 560 # in struct dentry
 561 #
 562 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
 563 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
 564 d_child, [
 565         #include <linux/list.h>
 566         #include <linux/dcache.h>
 567 ],[
 568         struct dentry de;
 569         INIT_LIST_HEAD(&de.d_child);
 570 ],[
 571         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
 572                 [dentry.d_child exist])
 573 ])
 574 ]) # LC_HAVE_DENTRY_D_CHILD
 575
 576 #
 577 # LC_KIOCB_KI_LEFT
 578 #
 579 # 3.12 ki_left removed from struct kiocb
 580 #
 581 AC_DEFUN([LC_KIOCB_KI_LEFT], [
 582 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
 583 kiocb_ki_left, [
 584         #include <linux/aio.h>
 585 ],[
 586         ((struct kiocb*)0)->ki_left = 0;
 587 ],[
 588         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
 589                 [ki_left exist])
 590 ])
 591 ]) # LC_KIOCB_KI_LEFT
 592
 593 #
 594 # LC_INIT_LIST_HEAD_RCU
 595 #
 596 # 3.12 added INIT_LIST_HEAD_RCU in commit 2a855b644c310d5db5
 597 # which is unfortunately an inline function and not a macro
 598 # that can be tested directly, so it needs a configure check.
 599 #
 600 AC_DEFUN([LC_INIT_LIST_HEAD_RCU], [
 601 LB_CHECK_COMPILE([if 'INIT_LIST_HEAD_RCU' exists],
 602 init_list_head_rcu, [
 603         #include <linux/list.h>
 604         #include <linux/rculist.h>
 605 ],[
 606         struct list_head list;
 607         INIT_LIST_HEAD_RCU(&list);
 608 ],[
 609         AC_DEFINE(HAVE_INIT_LIST_HEAD_RCU, 1,
 610                   [INIT_LIST_HEAD_RCU exists])
 611 ])
 612 ]) # LC_INIT_LIST_HEAD_RCU
 613
 614 #
 615 # LC_VFS_RENAME_5ARGS
 616 #
 617 # 3.13 has vfs_rename with 5 args
 618 #
 619 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
 620 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
 621 vfs_rename_5args, [
 622         #include <linux/fs.h>
 623 ],[
 624         vfs_rename(NULL, NULL, NULL, NULL, NULL);
 625 ], [
 626         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
 627                 [kernel has vfs_rename with 5 args])
 628 ])
 629 ]) # LC_VFS_RENAME_5ARGS
 630
 631 #
 632 # LC_VFS_UNLINK_3ARGS
 633 #
 634 # 3.13 has vfs_unlink with 3 args
 635 #
 636 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
 637 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
 638 vfs_unlink_3args, [
 639         #include <linux/fs.h>
 640 ],[
 641         vfs_unlink(NULL, NULL, NULL);
 642 ], [
 643         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
 644                 [kernel has vfs_unlink with 3 args])
 645 ])
 646 ]) # LC_VFS_UNLINK_3ARGS
 647
 648 # LC_HAVE_D_IS_POSITIVE
 649 #
 650 # Kernel version 3.13 b18825a7c8e37a7cf6abb97a12a6ad71af160de7
 651 # d_is_positive is added
 652 #
 653 AC_DEFUN([LC_HAVE_D_IS_POSITIVE], [
 654 LB_CHECK_COMPILE([if 'd_is_positive' exist],
 655 d_is_positive, [
 656         #include <linux/dcache.h>
 657 ],[
 658         d_is_positive(NULL);
 659 ],[
 660         AC_DEFINE(HAVE_D_IS_POSITIVE, 1,
 661                 ['d_is_positive' is available])
 662 ])
 663 ]) # LC_HAVE_D_IS_POSITIVE
 664
 665 #
 666 # LC_HAVE_BVEC_ITER
 667 #
 668 # 3.14 move some of its data in struct bio into the new
 669 # struct bvec_iter
 670 #
 671 AC_DEFUN([LC_HAVE_BVEC_ITER], [
 672 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
 673 have_bvec_iter, [
 674         #include <linux/bio.h>
 675 ],[
 676         struct bvec_iter iter;
 677
 678         iter.bi_bvec_done = 0;
 679 ], [
 680         AC_DEFINE(HAVE_BVEC_ITER, 1,
 681                 [kernel has struct bvec_iter])
 682 ])
 683 ]) # LC_HAVE_BVEC_ITER
 684
 685 #
 686 # LC_IOP_SET_ACL
 687 #
 688 # 3.14 adds set_acl method to inode_operations
 689 # see kernel commit 893d46e443346370cd4ea81d9d35f72952c62a37
 690 #
 691 AC_DEFUN([LC_IOP_SET_ACL], [
 692 LB_CHECK_COMPILE([if 'inode_operations' has '.set_acl' member function],
 693 inode_ops_set_acl, [
 694         #include <linux/fs.h>
 695 ],[
 696         struct inode_operations iop;
 697         iop.set_acl = NULL;
 698 ],[
 699         AC_DEFINE(HAVE_IOP_SET_ACL, 1,
 700                 [inode_operations has .set_acl member function])
 701 ])
 702 ]) # LC_IOP_SET_ACL
 703
 704 #
 705 # LC_HAVE_TRUNCATE_IPAGE_FINAL
 706 #
 707 # 3.14 bring truncate_inode_pages_final for evict_inode
 708 #
 709 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
 710 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
 711 truncate_ipages_final, [
 712         #include <linux/mm.h>
 713 ],[
 714         truncate_inode_pages_final(NULL);
 715 ], [
 716         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
 717                 [kernel has truncate_inode_pages_final])
 718 ])
 719 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
 720
 721 #
 722 # LC_IOPS_RENAME_WITH_FLAGS
 723 #
 724 # 3.14 has inode_operations->rename with 5 args
 725 # commit 520c8b16505236fc82daa352e6c5e73cd9870cff
 726 #
 727 AC_DEFUN([LC_IOPS_RENAME_WITH_FLAGS], [
 728 LB_CHECK_COMPILE([if 'inode_operations->rename' taken flags as argument],
 729 iops_rename_with_flags, [
 730         #include <linux/fs.h>
 731 ],[
 732         struct inode *i1 = NULL, *i2 = NULL;
 733         struct dentry *d1 = NULL, *d2 = NULL;
 734         int rc;
 735         rc = ((struct inode_operations *)0)->rename(i1, d1, i2, d2, 0);
 736 ], [
 737         AC_DEFINE(HAVE_IOPS_RENAME_WITH_FLAGS, 1,
 738                 [inode_operations->rename need flags as argument])
 739 ])
 740 ]) # LC_IOPS_RENAME_WITH_FLAGS
 741
 742 #
 743 # LC_VFS_RENAME_6ARGS
 744 #
 745 # 3.15 has vfs_rename with 6 args
 746 #
 747 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
 748 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
 749 vfs_rename_6args, [
 750         #include <linux/fs.h>
 751 ],[
 752         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
 753 ], [
 754         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
 755                 [kernel has vfs_rename with 6 args])
 756 ])
 757 ]) # LC_VFS_RENAME_6ARGS
 758
 759 #
 760 # LC_DIRECTIO_USE_ITER
 761 #
 762 # 3.16 kernel changes direct IO to use iov_iter
 763 #
 764 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
 765 LB_CHECK_COMPILE([if direct IO uses iov_iter],
 766 direct_io_iter, [
 767         #include <linux/fs.h>
 768 ],[
 769         struct address_space_operations ops = { };
 770         struct iov_iter *iter = NULL;
 771         loff_t offset = 0;
 772
 773         ops.direct_IO(0, NULL, iter, offset);
 774 ],[
 775         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
 776                 [direct IO uses iov_iter])
 777 ])
 778 ]) # LC_DIRECTIO_USE_ITER
 779
 780 #
 781 # LC_HAVE_IOV_ITER_INIT_DIRECTION
 782 #
 783 #
 784 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
 785 #      changed iov_iter_init api to start accepting a tag
 786 #      that defines if its a read or write operation
 787 #
 788 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
 789 tmp_flags="$EXTRA_KCFLAGS"
 790 EXTRA_KCFLAGS="-Werror"
 791 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
 792 iter_init, [
 793         #include <linux/uio.h>
 794         #include <linux/fs.h>
 795 ],[
 796         const struct iovec *iov = NULL;
 797
 798         iov_iter_init(NULL, READ, iov, 1, 0);
 799 ],[
 800         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
 801                 [iov_iter_init handles directional tag])
 802 ])
 803 EXTRA_KCFLAGS="$tmp_flags"
 804 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
 805
 806 #
 807 # LC_HAVE_IOV_ITER_TRUNCATE
 808 #
 809 #
 810 # 3.16 introduces a new API iov_iter_truncate()
 811 #
 812 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
 813 tmp_flags="$EXTRA_KCFLAGS"
 814 EXTRA_KCFLAGS="-Werror"
 815 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
 816 iter_truncate, [
 817         #include <linux/uio.h>
 818         #include <linux/fs.h>
 819 ],[
 820         struct iov_iter *i = NULL;
 821
 822         iov_iter_truncate(i, 0);
 823 ],[
 824         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
 825 ])
 826 EXTRA_KCFLAGS="$tmp_flags"
 827 ]) # LC_HAVE_IOV_ITER_TRUNCATE
 828
 829 #
 830 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
 831 #
 832 # 3.16 introduces [read|write]_iter to struct file_operations
 833 #
 834 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
 835 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
 836 file_function_iter, [
 837         #include <linux/fs.h>
 838 ],[
 839         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
 840         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
 841 ],[
 842         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
 843                 [file_operations.[read|write]_iter functions exist])
 844 ])
 845 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
 846
 847 #
 848 # LC_HAVE_INTERVAL_BLK_INTEGRITY
 849 #
 850 # 3.17 replace sector_size with interval in struct blk_integrity
 851 #
 852 AC_DEFUN([LC_HAVE_INTERVAL_BLK_INTEGRITY], [
 853 LB_CHECK_COMPILE([if 'blk_integrity.interval' exist],
 854 interval_blk_integrity, [
 855         #include <linux/blkdev.h>
 856 ],[
 857         ((struct blk_integrity *)0)->interval = 0;
 858 ],[
 859         AC_DEFINE(HAVE_INTERVAL_BLK_INTEGRITY, 1,
 860                 [blk_integrity.interval exist])
 861 ])
 862 ]) # LC_HAVE_INTERVAL_BLK_INTEGRITY
 863
 864 #
 865 # LC_KEY_MATCH_DATA
 866 #
 867 # 3.17  replaces key_type::match with match_preparse
 868 #       and has new struct key_match_data
 869 #
 870 AC_DEFUN([LC_KEY_MATCH_DATA], [
 871 LB_CHECK_COMPILE([if struct key_match field exist],
 872 key_match, [
 873         #include <linux/key-type.h>
 874 ],[
 875         struct key_match_data data;
 876
 877         data.raw_data = NULL;
 878 ],[
 879         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
 880                 [struct key_match_data exist])
 881 ])
 882 ]) # LC_KEY_MATCH_DATA
 883
 884 #
 885 # LC_NFS_FILLDIR_USE_CTX
 886 #
 887 # 3.18 kernel moved from void cookie to struct dir_context
 888 #
 889 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
 890 tmp_flags="$EXTRA_KCFLAGS"
 891 EXTRA_KCFLAGS="-Werror"
 892 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
 893 filldir_ctx, [
 894         #include <linux/fs.h>
 895 ],[
 896         int filldir(struct dir_context *ctx, const char* name,
 897                     int i, loff_t off, u64 tmp, unsigned temp)
 898         {
 899                 return 0;
 900         }
 901
 902         struct dir_context ctx = {
 903                 .actor = filldir,
 904         };
 905
 906         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
 907 ],[
 908         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
 909                 [filldir_t needs struct dir_context as argument])
 910 ])
 911 EXTRA_KCFLAGS="$tmp_flags"
 912 ]) # LC_NFS_FILLDIR_USE_CTX
 913
 914 #
 915 # LC_PERCPU_COUNTER_INIT
 916 #
 917 # 3.18  For kernels 3.18 and after percpu_counter_init starts
 918 #       to pass a GFP_* memory allocation flag for internal
 919 #       memory allocation purposes.
 920 #
 921 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
 922 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
 923 percpu_counter_init, [
 924         #include <linux/percpu_counter.h>
 925 ],[
 926         percpu_counter_init(NULL, 0, GFP_KERNEL);
 927 ],[
 928         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
 929                 [percpu_counter_init uses GFP_* flag])
 930 ])
 931 ]) # LC_PERCPU_COUNTER_INIT
 932
 933 #
 934 # LC_KIOCB_HAS_NBYTES
 935 #
 936 # 3.19 kernel removed ki_nbytes from struct kiocb
 937 #
 938 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
 939 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
 940 ki_nbytes, [
 941         #include <linux/fs.h>
 942 ],[
 943         struct kiocb iocb = { };
 944
 945         iocb.ki_nbytes = 0;
 946 ],[
 947         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
 948 ])
 949 ]) # LC_KIOCB_HAS_NBYTES
 950
 951 #
 952 # LC_HAVE_DQUOT_QC_DQBLK
 953 #
 954 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
 955 # Added in commit 14bf61ffe
 956 #
 957 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
 958 tmp_flags="$EXTRA_KCFLAGS"
 959 EXTRA_KCFLAGS="-Werror"
 960 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk],
 961 qc_dqblk, [
 962         #include <linux/fs.h>
 963         #include <linux/quota.h>
 964 ],[
 965         ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
 966 ],[
 967         AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
 968                 [quotactl_ops.set_dqblk takes struct qc_dqblk])
 969         AC_DEFINE(HAVE_DQUOT_KQID, 1,
 970                 [quotactl_ops.set_dqblk takes struct kqid])
 971 ])
 972 EXTRA_KCFLAGS="$tmp_flags"
 973 ]) # LC_HAVE_DQUOT_QC_DQBLK
 974
 975 #
 976 # LC_HAVE_AIO_COMPLETE
 977 #
 978 # 3.19 kernel makes aio_complete() static
 979 #
 980 AC_DEFUN([LC_HAVE_AIO_COMPLETE], [
 981 LB_CHECK_COMPILE([if kernel has exported aio_complete() ],
 982 aio_complete, [
 983         #include <linux/aio.h>
 984 ],[
 985         aio_complete(NULL, 0, 0);
 986 ],[
 987         AC_DEFINE(HAVE_AIO_COMPLETE, 1, [aio_complete defined])
 988 ])
 989 ]) # LC_HAVE_AIO_COMPLETE
 990
 991 #
 992 # LC_BACKING_DEV_INFO_REMOVAL
 993 #
 994 # 3.20 kernel removed backing_dev_info from address_space
 995 #
 996 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
 997 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
 998 backing_dev_info, [
 999         #include <linux/fs.h>
1000 ],[
1001         struct address_space mapping;
1002
1003         mapping.backing_dev_info = NULL;
1004 ],[
1005         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
1006 ])
1007 ]) # LC_BACKING_DEV_INFO_REMOVAL
1008
1009 #
1010 # LC_HAVE_BDI_CAP_MAP_COPY
1011 #
1012 # 3.20  removed mmap handling for backing devices since
1013 #       it breaks on non-MMU systems. See kernel commit
1014 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
1015 #
1016 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
1017 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
1018 bdi_cap_map_copy, [
1019         #include <linux/backing-dev.h>
1020 ],[
1021         struct backing_dev_info info;
1022
1023         info.capabilities = BDI_CAP_MAP_COPY;
1024 ],[
1025         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
1026                 [BDI_CAP_MAP_COPY exist])
1027 ])
1028 ]) # LC_HAVE_BDI_CAP_MAP_COPY
1029
1030 #
1031 # LC_IOV_ITER_RW
1032 #
1033 # 4.1 kernel has iov_iter_rw
1034 #
1035 AC_DEFUN([LC_IOV_ITER_RW], [
1036 LB_CHECK_COMPILE([if iov_iter_rw exist],
1037 iov_iter_rw, [
1038         #include <linux/fs.h>
1039         #include <linux/uio.h>
1040 ],[
1041         struct iov_iter *iter = NULL;
1042
1043         iov_iter_rw(iter);
1044 ],[
1045         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
1046                 [iov_iter_rw exist])
1047 ])
1048 ]) # LC_IOV_ITER_RW
1049
1050 #
1051 # LC_HAVE_SYNC_READ_WRITE
1052 #
1053 # 4.1 new_sync_[read|write] no longer exported
1054 #
1055 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
1056 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
1057         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
1058                         [new_sync_[read|write] is exported by the kernel])])
1059 ]) # LC_HAVE_SYNC_READ_WRITE
1060
1061 #
1062 # LC_HAVE___BI_CNT
1063 #
1064 # 4.1 redefined bi_cnt as __bi_cnt in commit dac56212e8127dbc0
1065 #
1066 AC_DEFUN([LC_HAVE___BI_CNT], [
1067 LB_CHECK_COMPILE([if Linux kernel has __bi_cnt in struct bio],
1068 have___bi_cnt, [
1069         #include <asm/atomic.h>
1070         #include <linux/bio.h>
1071         #include <linux/blk_types.h>
1072 ],[
1073         struct bio bio = { };
1074         int cnt;
1075         cnt = atomic_read(&bio.__bi_cnt);
1076 ], [
1077         AC_DEFINE(HAVE___BI_CNT, 1,
1078                 [struct bio has __bi_cnt])
1079 ])
1080 ]) # LC_HAVE___BI_CNT
1081
1082 #
1083 # LC_SYMLINK_OPS_USE_NAMEIDATA
1084 #
1085 # For the 4.2+ kernels the file system internal symlink api no
1086 # longer uses struct nameidata as a argument
1087 #
1088 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
1089 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
1090 symlink_use_nameidata, [
1091         #include <linux/namei.h>
1092         #include <linux/fs.h>
1093 ],[
1094         struct nameidata *nd = NULL;
1095
1096         ((struct inode_operations *)0)->follow_link(NULL, nd);
1097         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
1098 ],[
1099         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
1100                 [symlink inode operations need struct nameidata argument])
1101 ])
1102 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
1103
1104 #
1105 # LC_BIO_ENDIO_USES_ONE_ARG
1106 #
1107 # 4.2 kernel bio_endio now only takes one argument
1108 #
1109 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
1110 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
1111 bio_endio, [
1112         #include <linux/bio.h>
1113 ],[
1114         bio_endio(NULL);
1115 ],[
1116         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
1117                 [bio_endio takes only one argument])
1118 ])
1119 ]) # LC_BIO_ENDIO_USES_ONE_ARG
1120
1121 #
1122 # LC_ACCOUNT_PAGE_DIRTIED_3ARGS
1123 #
1124 # 4.2 [to 4.5] kernel page dirtied takes 3 arguments
1125 #
1126 AC_DEFUN([LC_ACCOUNT_PAGE_DIRTIED_3ARGS], [
1127 LB_CHECK_COMPILE([if 'account_page_dirtied' with 3 args exists],
1128 account_page_dirtied, [
1129         #include <linux/mm.h>
1130 ],[
1131         account_page_dirtied(NULL, NULL, NULL);
1132 ],[
1133         AC_DEFINE(HAVE_ACCOUNT_PAGE_DIRTIED_3ARGS, 1,
1134                 [account_page_dirtied takes three arguments])
1135 ])
1136 ]) # LC_ACCOUNT_PAGE_DIRTIED_3ARGS
1137
1138 #
1139 # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
1140 #
1141 # 4.3 replace interval with interval_exp in 'struct blk_integrity'
1142 # 'struct blk_integrity_profile' is also added in this version,
1143 # thus use this to determine whether 'struct blk_integrity' has profile
1144 #
1145 AC_DEFUN([LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY], [
1146 LB_CHECK_COMPILE([if 'blk_integrity.interval_exp' exist],
1147 blk_integrity_interval_exp, [
1148         #include <linux/blkdev.h>
1149 ],[
1150         ((struct blk_integrity *)0)->interval_exp = 0;
1151 ],[
1152         AC_DEFINE(HAVE_INTERVAL_EXP_BLK_INTEGRITY, 1,
1153                 [blk_integrity.interval_exp exist])
1154 ])
1155 ]) # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
1156
1157 #
1158 # LC_HAVE_CACHE_HEAD_HLIST
1159 #
1160 # 4.3 kernel swiched to hlist for cache_head
1161 #
1162 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
1163 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
1164 cache_head_has_hlist, [
1165         #include <linux/sunrpc/cache.h>
1166 ],[
1167         do {} while(sizeof(((struct cache_head *)0)->cache_list));
1168 ],[
1169         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
1170                 [cache_head has hlist cache_list])
1171 ])
1172 ]) # LC_HAVE_CACHE_HEAD_HLIST
1173
1174 #
1175 # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
1176 #
1177 # Kernel version 4.3 commit e409de992e3ea3674393465f07cc71c948edd87a
1178 # simplified xattr_handler handling by passing in the handler pointer
1179 #
1180 AC_DEFUN([LC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
1181 tmp_flags="$EXTRA_KCFLAGS"
1182 EXTRA_KCFLAGS="-Werror"
1183 LB_CHECK_COMPILE([if 'struct xattr_handler' functions pass in handler pointer],
1184 xattr_handler_simplified, [
1185         #include <linux/xattr.h>
1186 ],[
1187         struct xattr_handler handler;
1188
1189         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, 0);
1190         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, 0, 0);
1191 ],[
1192         AC_DEFINE(HAVE_XATTR_HANDLER_SIMPLIFIED, 1, [handler pointer is parameter])
1193 ])
1194 EXTRA_KCFLAGS="$tmp_flags"
1195 ]) # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
1196
1197 #
1198 # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
1199 #
1200 # 4.3 replace interval with interval_exp in 'struct blk_integrity'.
1201 #
1202 AC_DEFUN([LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD], [
1203 LB_CHECK_COMPILE([if 'bio_integrity_payload.bip_iter' exist],
1204 bio_integrity_payload_bip_iter, [
1205         #include <linux/bio.h>
1206 ],[
1207         ((struct bio_integrity_payload *)0)->bip_iter.bi_size = 0;
1208 ],[
1209         AC_DEFINE(HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD, 1,
1210                 [bio_integrity_payload.bip_iter exist])
1211 ])
1212 ]) # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
1213
1214 #
1215 # LC_BIO_INTEGRITY_PREP_FN
1216 #
1217 # Lustre kernel patch extents bio_integrity_prep to accept optional
1218 # generate/verify_fn as extra args.
1219 #
1220 AC_DEFUN([LC_BIO_INTEGRITY_PREP_FN], [
1221 LB_CHECK_COMPILE([if 'bio_integrity_prep_fn' exists],
1222 bio_integrity_prep_fn, [
1223         #include <linux/bio.h>
1224 ],[
1225         bio_integrity_prep_fn(NULL, NULL, NULL);
1226 ],[
1227         AC_DEFINE(HAVE_BIO_INTEGRITY_PREP_FN, 1,
1228                 [kernel has bio_integrity_prep_fn])
1229         AC_SUBST(PATCHED_INTEGRITY_INTF)
1230 ],[
1231         AC_SUBST(PATCHED_INTEGRITY_INTF, [#])
1232 ])
1233 ]) # LC_BIO_INTEGRITY_PREP_FN
1234
1235 #
1236 # LC_HAVE_BI_OPF
1237 #
1238 # 4.4/4.8 redefined bi_rw as bi_opf (SLES12/kernel commit 4382e33ad37486)
1239 #
1240 AC_DEFUN([LC_HAVE_BI_OPF], [
1241 LB_CHECK_COMPILE([if Linux kernel has bi_opf in struct bio],
1242 have_bi_opf, [
1243         #include <linux/bio.h>
1244 ],[
1245         struct bio bio;
1246
1247         bio.bi_opf = 0;
1248 ], [
1249         AC_DEFINE(HAVE_BI_OPF, 1,
1250                 [struct bio has bi_opf])
1251 ])
1252 ]) # LC_HAVE_BI_OPF
1253
1254 #
1255 # LC_HAVE_SUBMIT_BIO_2ARGS
1256 #
1257 # 4.4 removed an argument from submit_bio
1258 #
1259 AC_DEFUN([LC_HAVE_SUBMIT_BIO_2ARGS], [
1260 LB_CHECK_COMPILE([if submit_bio takes two arguments],
1261 have_submit_bio_2args, [
1262         #include <linux/bio.h>
1263 ],[
1264         struct bio bio;
1265         submit_bio(READ, &bio);
1266 ], [
1267         AC_DEFINE(HAVE_SUBMIT_BIO_2ARGS, 1,
1268                 [submit_bio takes two arguments])
1269 ])
1270 ]) # LC_HAVE_SUBMIT_BIO_2_ARGS
1271
1272 #
1273 # LC_HAVE_CLEAN_BDEV_ALIASES
1274 #
1275 # 4.4/4.9 unmap_underlying_metadata was replaced by clean_bdev_aliases
1276 # (SLES12/kernel commit 29f3ad7d8380364c)
1277 #
1278 AC_DEFUN([LC_HAVE_CLEAN_BDEV_ALIASES], [
1279 LB_CHECK_COMPILE([if kernel has clean_bdev_aliases],
1280 have_clean_bdev_aliases, [
1281         #include <linux/buffer_head.h>
1282 ],[
1283         struct block_device bdev;
1284         clean_bdev_aliases(&bdev,1,1);
1285 ], [
1286         AC_DEFINE(HAVE_CLEAN_BDEV_ALIASES, 1,
1287                 [kernel has clean_bdev_aliases])
1288 ])
1289 ]) # LC_HAVE_CLEAN_BDEV_ALIASES
1290
1291 #
1292 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
1293 #
1294 # 4.4 kernel have moved locks API users to
1295 # locks_lock_inode_wait()
1296 #
1297 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
1298 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
1299 locks_lock_file_wait, [
1300         #include <linux/fs.h>
1301 ],[
1302         locks_lock_file_wait(NULL, NULL);
1303 ],[
1304         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
1305                 [kernel has locks_lock_file_wait])
1306 ])
1307 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
1308
1309 #
1310 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
1311 #
1312 # 4.4 kernel merged type-specific data with the payload data for keys
1313 #
1314 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
1315 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
1316 key_payload_data_array, [
1317         #include <linux/key.h>
1318 ],[
1319         struct key key = { };
1320
1321         key.payload.data[0] = NULL;
1322 ],[
1323         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
1324 ])
1325 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
1326
1327 #
1328 # LC_HAVE_XATTR_HANDLER_NAME
1329 #
1330 # Kernel version 4.4 commit 98e9cb5711c68223f0e4d5201b9a6add255ec550
1331 # add a name member to struct xattr_handler
1332 #
1333 AC_DEFUN([LC_HAVE_XATTR_HANDLER_NAME], [
1334 tmp_flags="$EXTRA_KCFLAGS"
1335 EXTRA_KCFLAGS="-Werror"
1336 LB_CHECK_COMPILE([if 'struct xattr_handler' has a name member],
1337 xattr_handler_name, [
1338         #include <linux/xattr.h>
1339 ],[
1340         ((struct xattr_handler *)NULL)->name = NULL;
1341 ],[
1342         AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1, [xattr_handler has a name member])
1343 ])
1344 EXTRA_KCFLAGS="$tmp_flags"
1345 ]) # LC_HAVE_XATTR_HANDLER_NAME
1346
1347 #
1348 # LC_HAVE_FILE_DENTRY
1349 #
1350 # 4.5 adds wrapper file_dentry
1351 #
1352 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
1353 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
1354 file_dentry, [
1355         #include <linux/fs.h>
1356 ],[
1357         file_dentry(NULL);
1358 ], [
1359         AC_DEFINE(HAVE_FILE_DENTRY, 1,
1360                 [kernel has file_dentry])
1361 ])
1362 ]) # LC_HAVE_FILE_DENTRY
1363
1364 #
1365 # LC_HAVE_INODE_LOCK
1366 #
1367 # 4.5 introduced inode_lock
1368 #
1369 AC_DEFUN([LC_HAVE_INODE_LOCK], [
1370 LB_CHECK_COMPILE([if 'inode_lock' is defined],
1371 inode_lock, [
1372         #include <linux/fs.h>
1373 ],[
1374         inode_lock(NULL);
1375 ], [
1376         AC_DEFINE(HAVE_INODE_LOCK, 1,
1377                   [inode_lock is defined])
1378 ])
1379 ]) # LC_HAVE_INODE_LOCK
1380
1381 #
1382 # LC_HAVE_IOP_GET_LINK
1383 #
1384 # 4.5 vfs replaced iop->follow_link with
1385 # iop->get_link
1386 #
1387 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
1388 LB_CHECK_COMPILE([if 'iop' has 'get_link'],
1389 inode_ops_get_link, [
1390         #include <linux/fs.h>
1391 ],[
1392         struct inode_operations iop;
1393         iop.get_link = NULL;
1394 ],[
1395         AC_DEFINE(HAVE_IOP_GET_LINK, 1,
1396                 [have iop get_link])
1397 ])
1398 ]) # LC_HAVE_IOP_GET_LINK
1399
1400 #
1401 # LC_HAVE_IN_COMPAT_SYSCALL
1402 #
1403 # 4.6 renamed is_compat_task to in_compat_syscall
1404 #
1405 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
1406 LB_CHECK_COMPILE([if 'in_compat_syscall' is defined],
1407 in_compat_syscall, [
1408         #include <linux/compat.h>
1409 ],[
1410         in_compat_syscall();
1411 ],[
1412         AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1,
1413                 [have in_compat_syscall])
1414 ])
1415 ]) # LC_HAVE_IN_COMPAT_SYSCALL
1416
1417 #
1418 # LC_HAVE_XATTR_HANDLER_INODE_PARAM
1419 #
1420 # Kernel version 4.6 commit b296821a7c42fa58baa17513b2b7b30ae66f3336
1421 # and commit 5930122683dff58f0846b0f0405b4bd598a3ba6a added inode parameter
1422 # to xattr_handler functions
1423 #
1424 AC_DEFUN([LC_HAVE_XATTR_HANDLER_INODE_PARAM], [
1425 tmp_flags="$EXTRA_KCFLAGS"
1426 EXTRA_KCFLAGS="-Werror"
1427 LB_CHECK_COMPILE([if 'struct xattr_handler' functions have inode parameter],
1428 xattr_handler_inode_param, [
1429         #include <linux/xattr.h>
1430 ],[
1431         const struct xattr_handler handler;
1432
1433         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, NULL, 0);
1434         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, NULL, 0, 0);
1435 ],[
1436         AC_DEFINE(HAVE_XATTR_HANDLER_INODE_PARAM, 1, [needs inode parameter])
1437 ])
1438 EXTRA_KCFLAGS="$tmp_flags"
1439 ]) # LC_HAVE_XATTR_HANDLER_INODE_PARAM
1440
1441 #
1442 # LC_D_IN_LOOKUP
1443 #
1444 # Kernel version 4.6 commit 85c7f81041d57cfe9dc97f4680d5586b54534a39
1445 # introduced parallel lookups in the VFS layer. The inline function
1446 # d_in_lookup was added to notify when the same item was being queried
1447 # at the same time.
1448 #
1449 AC_DEFUN([LC_D_IN_LOOKUP], [
1450 tmp_flags="$EXTRA_KCFLAGS"
1451 EXTRA_KCFLAGS="-Werror"
1452 LB_CHECK_COMPILE([if 'd_in_lookup' is defined],
1453 d_in_lookup, [
1454         #include <linux/dcache.h>
1455 ],[
1456         d_in_lookup(NULL);
1457 ],[
1458         AC_DEFINE(HAVE_D_IN_LOOKUP, 1, [d_in_lookup is defined])
1459 ])
1460 EXTRA_KCFLAGS="$tmp_flags"
1461 ]) # LC_D_IN_LOOKUP
1462
1463 #
1464 # LC_LOCK_PAGE_MEMCG
1465 #
1466 # Kernel version 4.6 adds lock_page_memcg
1467 #
1468 AC_DEFUN([LC_LOCK_PAGE_MEMCG], [
1469 LB_CHECK_COMPILE([if 'lock_page_memcg' is defined],
1470 lock_page_memcg, [
1471         #include <linux/memcontrol.h>
1472 ],[
1473         lock_page_memcg(NULL);
1474 ],[
1475         AC_DEFINE(HAVE_LOCK_PAGE_MEMCG, 1,
1476                 [lock_page_memcg is defined])
1477 ])
1478 ]) # LC_LOCK_PAGE_MEMCG
1479
1480 #
1481 # LC_DIRECTIO_2ARGS
1482 #
1483 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
1484 # direct-io: eliminate the offset argument to ->direct_IO
1485 #
1486 AC_DEFUN([LC_DIRECTIO_2ARGS], [
1487 LB_CHECK_COMPILE([if '->direct_IO()' taken 2 arguments],
1488 direct_io_2args, [
1489         #include <linux/fs.h>
1490 ],[
1491         struct address_space_operations ops = { };
1492         struct iov_iter *iter = NULL;
1493         struct kiocb *iocb = NULL;
1494         int rc;
1495
1496         rc = ops.direct_IO(iocb, iter);
1497 ],[
1498         AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1,
1499                 [direct_IO need 2 arguments])
1500 ])
1501 ]) # LC_DIRECTIO_2ARGS
1502
1503 #
1504 # LC_GENERIC_WRITE_SYNC_2ARGS
1505 #
1506 # Kernel version 4.7 commit dde0c2e79848298cc25621ad080d47f94dbd7cce
1507 # fs: add IOCB_SYNC and IOCB_DSYNC
1508 #
1509 AC_DEFUN([LC_GENERIC_WRITE_SYNC_2ARGS], [
1510 LB_CHECK_COMPILE([if 'generic_write_sync()' taken 2 arguments],
1511 generic_write_sync_2args, [
1512         #include <linux/fs.h>
1513 ],[
1514         struct kiocb *iocb = NULL;
1515         ssize_t rc;
1516
1517         rc = generic_write_sync(iocb, 0);
1518 ],[
1519         AC_DEFINE(HAVE_GENERIC_WRITE_SYNC_2ARGS, 1,
1520                 [generic_write_sync need 2 arguments])
1521 ])
1522 ]) # LC_GENERIC_WRITE_SYNC_2ARGS
1523
1524 #
1525 # LC_FOP_ITERATE_SHARED
1526 #
1527 # Kernel v4.6-rc3-29-g6192269 adds iterate_shared method to file_operations
1528 #
1529 AC_DEFUN([LC_FOP_ITERATE_SHARED], [
1530 LB_CHECK_COMPILE([if 'file_operations' has 'iterate_shared'],
1531 fop_iterate_shared, [
1532         #include <linux/fs.h>
1533 ],[
1534         struct file_operations fop;
1535         fop.iterate_shared = NULL;
1536 ],[
1537         AC_DEFINE(HAVE_FOP_ITERATE_SHARED, 1,
1538                 [file_operations has iterate_shared])
1539 ])
1540 ]) # LC_FOP_ITERATE_SHARED
1541
1542 #
1543 # LC_HAVE_POSIX_ACL_VALID_USER_NS
1544 #
1545 # 4.8 posix_acl_valid takes struct user_namespace
1546 #
1547 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
1548 LB_CHECK_COMPILE([if 'posix_acl_valid' takes 'struct user_namespace'],
1549 posix_acl_valid, [
1550         #include <linux/fs.h>
1551         #include <linux/posix_acl.h>
1552 ],[
1553         posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
1554 ],[
1555         AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
1556                 [posix_acl_valid takes struct user_namespace])
1557 ])
1558 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
1559
1560 #
1561 # LC_D_COMPARE_4ARGS
1562 #
1563 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
1564 # get rid of 'parent' argument of ->d_compare()
1565 #
1566 AC_DEFUN([LC_D_COMPARE_4ARGS], [
1567 LB_CHECK_COMPILE([if 'd_compare' taken 4 arguments],
1568 d_compare_4args, [
1569         #include <linux/dcache.h>
1570 ],[
1571         ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
1572 ],[
1573         AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
1574                 [d_compare need 4 arguments])
1575 ])
1576 ]) # LC_D_COMPARE_4ARGS
1577
1578 #
1579 # LC_FULL_NAME_HASH_3ARGS
1580 #
1581 # Kernel version 4.8 commit 8387ff2577eb9ed245df9a39947f66976c6bcd02
1582 # vfs: make the string hashes salt the hash
1583 #
1584 AC_DEFUN([LC_FULL_NAME_HASH_3ARGS], [
1585 LB_CHECK_COMPILE([if 'full_name_hash' taken 3 arguments],
1586 full_name_hash_3args, [
1587         #include <linux/stringhash.h>
1588 ],[
1589         unsigned int hash;
1590         hash = full_name_hash(NULL,NULL,0);
1591 ],[
1592         AC_DEFINE(HAVE_FULL_NAME_HASH_3ARGS, 1,
1593                 [full_name_hash need 3 arguments])
1594 ])
1595 ]) # LC_FULL_NAME_HASH_3ARGS
1596
1597 #
1598 # LC_STRUCT_POSIX_ACL_XATTR
1599 #
1600 # Kernel version 4.8 commit 2211d5ba5c6c4e972ba6dbc912b2897425ea6621
1601 # posix_acl: xattr representation cleanups
1602 #
1603 AC_DEFUN([LC_STRUCT_POSIX_ACL_XATTR], [
1604 LB_CHECK_COMPILE([if 'struct posix_acl_xattr_{header,entry}' defined],
1605 struct_posix_acl_xattr, [
1606         #include <linux/fs.h>
1607         #include <linux/posix_acl_xattr.h>
1608 ],[
1609         struct posix_acl_xattr_header *h = NULL;
1610         struct posix_acl_xattr_entry  *e;
1611         e = (void *)(h + 1);
1612 ],[
1613         AC_DEFINE(HAVE_STRUCT_POSIX_ACL_XATTR, 1,
1614                 [struct posix_acl_xattr_{header,entry} defined])
1615 ])
1616 ]) # LC_STRUCT_POSIX_ACL_XATTR
1617
1618 #
1619 # LC_IOP_XATTR
1620 #
1621 # Kernel version 4.8 commit fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42
1622 # removed {get,set,remove}xattr inode operations
1623 #
1624 AC_DEFUN([LC_IOP_XATTR], [
1625 LB_CHECK_COMPILE([if 'inode_operations' has {get,set,remove}xattr members],
1626 inode_ops_xattr, [
1627         #include <linux/fs.h>
1628 ],[
1629         struct inode_operations iop;
1630         iop.setxattr = NULL;
1631         iop.getxattr = NULL;
1632         iop.removexattr = NULL;
1633 ],[
1634         AC_DEFINE(HAVE_IOP_XATTR, 1,
1635                 [inode_operations has {get,set,remove}xattr members])
1636 ])
1637 ]) # LC_IOP_XATTR
1638
1639 #
1640 # LC_GROUP_INFO_GID
1641 #
1642 # Kernel version 4.9 commit 81243eacfa400f5f7b89f4c2323d0de9982bb0fb
1643 # cred: simpler, 1D supplementary groups
1644 #
1645 AC_DEFUN([LC_GROUP_INFO_GID], [
1646 LB_CHECK_COMPILE([if 'struct group_info' has member 'gid'],
1647 group_info_gid, [
1648         #include <linux/cred.h>
1649 ],[
1650         kgid_t *p;
1651         p = ((struct group_info *)0)->gid;
1652 ],[
1653         AC_DEFINE(HAVE_GROUP_INFO_GID, 1,
1654                 [struct group_info has member gid])
1655 ])
1656 ]) # LC_GROUP_INFO_GID
1657
1658 #
1659 # LC_VFS_SETXATTR
1660 #
1661 # Kernel version 4.9 commit 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4
1662 # added __vfs_{get,set,remove}xattr helpers
1663 #
1664 AC_DEFUN([LC_VFS_SETXATTR], [
1665 LB_CHECK_COMPILE([if '__vfs_setxattr' helper is available],
1666 vfs_setxattr, [
1667         #include <linux/xattr.h>
1668 ],[
1669         __vfs_setxattr(NULL, NULL, NULL, NULL, 0, 0);
1670 ],[
1671         AC_DEFINE(HAVE_VFS_SETXATTR, 1,
1672                 ['__vfs_setxattr is available])
1673 ])
1674 ]) # LC_VFS_SETXATTR
1675
1676 #
1677 # LC_POSIX_ACL_UPDATE_MODE
1678 #
1679 # Kernel version 4.9 commit 073931017b49d9458aa351605b43a7e34598caef
1680 # posix_acl: Clear SGID bit when setting file permissions
1681 #
1682 AC_DEFUN([LC_POSIX_ACL_UPDATE_MODE], [
1683 LB_CHECK_COMPILE([if 'posix_acl_update_mode' exists],
1684 posix_acl_update_mode, [
1685         #include <linux/fs.h>
1686         #include <linux/posix_acl.h>
1687 ],[
1688         posix_acl_update_mode(NULL, NULL, NULL);
1689 ],[
1690         AC_DEFINE(HAVE_POSIX_ACL_UPDATE_MODE, 1,
1691                 ['posix_acl_update_mode' is available])
1692 ])
1693 ]) # LC_POSIX_ACL_UPDATE_MODE
1694
1695 #
1696 # LC_IOP_GENERIC_READLINK
1697 #
1698 # Kernel version 4.10 commit dfeef68862edd7d4bafe68ef7aeb5f658ef24bb5
1699 # removed generic_readlink from individual file systems
1700 #
1701 AC_DEFUN([LC_IOP_GENERIC_READLINK], [
1702 LB_CHECK_COMPILE([if 'generic_readlink' still exist],
1703 inode_ops_readlink, [
1704         #include <linux/fs.h>
1705 ],[
1706         struct inode_operations iop;
1707         iop.readlink = generic_readlink;
1708 ],[
1709         AC_DEFINE(HAVE_IOP_GENERIC_READLINK, 1,
1710                 [generic_readlink has been removed])
1711 ])
1712 ]) # LC_IOP_GENERIC_READLINK
1713
1714 #
1715 # LC_HAVE_VM_FAULT_ADDRESS
1716 #
1717 # Kernel version 4.10 commit 1a29d85eb0f19b7d8271923d8917d7b4f5540b3e
1718 # removed virtual_address field. Need to use address field instead
1719 #
1720 AC_DEFUN([LC_HAVE_VM_FAULT_ADDRESS], [
1721 LB_CHECK_COMPILE([if 'struct vm_fault' replaced virtual_address with address field],
1722 vm_fault_address, [
1723         #include <linux/mm.h>
1724 ],[
1725         struct vm_fault vmf;
1726         vmf.address = NULL;
1727 ],[
1728         AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
1729                 [virtual_address has been replaced by address field])
1730 ])
1731 ]) # LC_HAVE_VM_FAULT_ADDRESS
1732
1733 #
1734 # LC_INODEOPS_ENHANCED_GETATTR
1735 #
1736 # Kernel version 4.11 commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
1737 # expanded getattr to be able to get more stat information.
1738 #
1739 AC_DEFUN([LC_INODEOPS_ENHANCED_GETATTR], [
1740 LB_CHECK_COMPILE([if 'inode_operations' getattr member can gather advance stats],
1741 getattr_path, [
1742         #include <linux/fs.h>
1743 ],[
1744         struct path path;
1745
1746         ((struct inode_operations *)1)->getattr(&path, NULL, 0, 0);
1747 ],[
1748         AC_DEFINE(HAVE_INODEOPS_ENHANCED_GETATTR, 1,
1749                 [inode_operations .getattr member function can gather advance stats])
1750 ])
1751 ]) # LC_INODEOPS_ENHANCED_GETATTR
1752
1753 #
1754 # LC_VM_OPERATIONS_REMOVE_VMF_ARG
1755 #
1756 # Kernel version 4.11 commit 11bac80004499ea59f361ef2a5516c84b6eab675
1757 # removed struct vm_area_struct as an argument for vm_operations since
1758 # in the same kernel version struct vma_area_struct was folded into
1759 # struct vm_fault.
1760 #
1761 AC_DEFUN([LC_VM_OPERATIONS_REMOVE_VMF_ARG], [
1762 LB_CHECK_COMPILE([if 'struct vm_operations' removed struct vm_area_struct],
1763 vm_operations_no_vm_area_struct, [
1764         #include <linux/mm.h>
1765 ],[
1766         struct vm_fault vmf;
1767
1768         ((struct vm_operations_struct *)0)->fault(&vmf);
1769         ((struct vm_operations_struct *)0)->page_mkwrite(&vmf);
1770 ],[
1771         AC_DEFINE(HAVE_VM_OPS_USE_VM_FAULT_ONLY, 1,
1772                 ['struct vm_operations' remove struct vm_area_struct argument])
1773 ])
1774 ]) # LC_VM_OPERATIONS_REMOVE_VMF_ARG
1775
1776 #
1777 # LC_HAVE_KEY_USAGE_REFCOUNT
1778 #
1779 # Kernel version 4.11 commit fff292914d3a2f1efd05ca71c2ba72a3c663201e
1780 # converted key.usage from atomic_t to refcount_t.
1781 #
1782 AC_DEFUN([LC_HAVE_KEY_USAGE_REFCOUNT], [
1783 LB_CHECK_COMPILE([if 'key.usage' is refcount_t],
1784 key_usage_refcount, [
1785         #include <linux/key.h>
1786 ],[
1787         struct key key = { };
1788
1789         refcount_read(&key.usage);
1790 ],[
1791         AC_DEFINE(HAVE_KEY_USAGE_REFCOUNT, 1, [key.usage is of type refcount_t])
1792 ])
1793 ]) #LC_HAVE_KEY_USAGE_REFCOUNT
1794
1795 #
1796 # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
1797 #
1798 # Kernel version 4.11 commit f437a3f477cce402dbec6537b29e9e33962c9f73
1799 # switched CRYPTO_MAX_ALG_NAME from 64 to 128.
1800 #
1801 AC_DEFUN([LC_HAVE_CRYPTO_MAX_ALG_NAME_128], [
1802 LB_CHECK_COMPILE([if 'CRYPTO_MAX_ALG_NAME' is 128],
1803 crypto_max_alg_name, [
1804         #include <linux/crypto.h>
1805 ],[
1806         #if CRYPTO_MAX_ALG_NAME != 128
1807         exit(1);
1808         #endif
1809 ],[
1810         AC_DEFINE(HAVE_CRYPTO_MAX_ALG_NAME_128, 1,
1811                 ['CRYPTO_MAX_ALG_NAME' is 128])
1812 ])
1813 ]) # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
1814
1815 #
1816 # Kernel version 4.12 commit 47f38c539e9a42344ff5a664942075bd4df93876
1817 # CURRENT_TIME is not 64 bit time safe so it was replaced with
1818 # current_time()
1819 #
1820 AC_DEFUN([LC_CURRENT_TIME], [
1821 LB_CHECK_COMPILE([if CURRENT_TIME has been replaced with current_time],
1822 current_time, [
1823         #include <linux/fs.h>
1824 ],[
1825         struct iattr attr;
1826
1827         attr.ia_atime = current_time(NULL);
1828 ],[
1829         AC_DEFINE(HAVE_CURRENT_TIME, 1,
1830                 [current_time() has replaced CURRENT_TIME])
1831 ])
1832 ]) # LIBCFS_CURRENT_TIME
1833
1834 #
1835 # Kernel version 4.12-rc3 85787090a21eb749d8b347eaf9ff1a455637473c
1836 # changed struct super_block s_uuid into a proper uuid_t
1837 #
1838 AC_DEFUN([LC_SUPER_BLOCK_S_UUID], [
1839 LB_CHECK_COMPILE([if 'struct super_block' s_uuid is uuid_t],
1840 super_block_s_uuid, [
1841         #include <linux/fs.h>
1842 ],[
1843         struct super_block sb;
1844
1845         uuid_parse(NULL, &sb.s_uuid);
1846 ],[
1847         AC_DEFINE(HAVE_S_UUID_AS_UUID_T, 1, ['s_uuid' is an uuid_t])
1848 ])
1849 ]) # LC_SUPER_BLOCK_S_UUID
1850
1851 #
1852 # LC_SUPER_SETUP_BDI_NAME
1853 #
1854 # Kernel version 4.12 commit 9594caf216dc0fe3e318b34af0127276db661241
1855 # unified bdi handling
1856 #
1857 AC_DEFUN([LC_SUPER_SETUP_BDI_NAME], [
1858 LB_CHECK_COMPILE([if 'super_setup_bdi_name' exist],
1859 super_setup_bdi_name, [
1860         #include <linux/fs.h>
1861 ],[
1862         super_setup_bdi_name(NULL, "lustre");
1863 ],[
1864         AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1,
1865                 ['super_setup_bdi_name' is available])
1866 ])
1867 ]) # LC_SUPER_SETUP_BDI_NAME
1868
1869 #
1870 # LC_BI_STATUS
1871 #
1872 # 4.12 replace bi_error to bi_status
1873 #
1874 AC_DEFUN([LC_BI_STATUS], [
1875 LB_CHECK_COMPILE([if 'bi_status' exist],
1876 bi_status, [
1877         #include <linux/blk_types.h>
1878 ],[
1879         ((struct bio *)0)->bi_status = 0;
1880 ],[
1881         AC_DEFINE(HAVE_BI_STATUS, 1,
1882                 ['bi_status' is available])
1883 ])
1884 ]) # LC_BI_STATUS
1885
1886 #
1887 # LC_BIO_INTEGRITY_ENABLED
1888 #
1889 # 4.13 removed bio_integrity_enabled
1890 #
1891 AC_DEFUN([LC_BIO_INTEGRITY_ENABLED], [
1892 LB_CHECK_COMPILE([if 'bio_integrity_enabled' exist],
1893 bio_integrity_enabled, [
1894         #include <linux/bio.h>
1895 ],[
1896         bio_integrity_enabled(NULL);
1897 ],[
1898         AC_DEFINE(HAVE_BIO_INTEGRITY_ENABLED, 1,
1899                 ['bio_integrity_enabled' is available])
1900 ])
1901 ]) # LC_BIO_INTEGRITY_ENABLED
1902
1903 #
1904 # LC_PAGEVEC_INIT_ONE_PARAM
1905 #
1906 # 4.14 pagevec_init takes one parameter
1907 #
1908 AC_DEFUN([LC_PAGEVEC_INIT_ONE_PARAM], [
1909 LB_CHECK_COMPILE([if 'pagevec_init' takes one parameter],
1910 pagevec_init, [
1911         #include <linux/pagevec.h>
1912 ],[
1913         pagevec_init(NULL);
1914 ],[
1915         AC_DEFINE(HAVE_PAGEVEC_INIT_ONE_PARAM, 1,
1916                 ['pagevec_init' takes one parameter])
1917 ])
1918 ]) # LC_PAGEVEC_INIT_ONE_PARAM
1919
1920 #
1921 # LC_BI_BDEV
1922 #
1923 # 4.14 replaced bi_bdev to bi_disk
1924 #
1925 AC_DEFUN([LC_BI_BDEV], [
1926 LB_CHECK_COMPILE([if 'bi_bdev' exist],
1927 bi_bdev, [
1928         #include <linux/bio.h>
1929 ],[
1930         ((struct bio *)0)->bi_bdev = NULL;
1931 ],[
1932         AC_DEFINE(HAVE_BI_BDEV, 1,
1933                 ['bi_bdev' is available])
1934 ])
1935 ]) # LC_BI_BDEV
1936
1937 #
1938 # LC_I_PAGES
1939 #
1940 # kernel 4.17 commit b93b016313b3ba8003c3b8bb71f569af91f19fc7
1941 #
1942 AC_DEFUN([LC_I_PAGES], [
1943 LB_CHECK_COMPILE([if struct address_space has i_pages],
1944 i_pages, [
1945         #include <linux/fs.h>
1946 ],[
1947         struct address_space mapping = {};
1948         void *i_pages;
1949
1950         i_pages = &mapping.i_pages;
1951 ],[
1952         AC_DEFINE(HAVE_I_PAGES, 1,
1953                 [struct address_space has i_pages])
1954 ])
1955 ]) # LC_I_PAGES
1956
1957 #
1958 # LC_VM_FAULT_T
1959 #
1960 # kernel 4.17 commit 3d3539018d2cbd12e5af4a132636ee7fd8d43ef0
1961 # mm: create the new vm_fault_t type
1962 #
1963 AC_DEFUN([LC_VM_FAULT_T], [
1964 LB_CHECK_COMPILE([if vm_fault_t type exists],
1965 vm_fault_t, [
1966         #include <linux/mm_types.h>
1967 ],[
1968         vm_fault_t x = VM_FAULT_SIGBUS;
1969         (void)x
1970 ],[
1971         AC_DEFINE(HAVE_VM_FAULT_T, 1,
1972                 [if vm_fault_t type exists])
1973 ])
1974 ]) # LC_VM_FAULT_T
1975
1976 #
1977 # LC_INODE_TIMESPEC64
1978 #
1979 # kernel 4.17-rc7 commit 8efd6894ff089adeeac7cb9f32125b85d963d1bc
1980 # fs: add timespec64_truncate()
1981 # kernel 4.18 commit 95582b00838837fc07e042979320caf917ce3fe6
1982 # inode timestamps switched to timespec64
1983 # kernel 4.19-rc2 commit 976516404ff3fab2a8caa8bd6f5efc1437fed0b8
1984 # y2038: remove unused time interfaces
1985 # ...
1986 #  timespec_trunc
1987 # ...
1988 # When inode times are timespec64 stop using the deprecated
1989 # time interfaces.
1990 #
1991 AC_DEFUN([LC_INODE_TIMESPEC64], [
1992 tmp_flags="$EXTRA_KCFLAGS"
1993 EXTRA_KCFLAGS="-Werror"
1994 LB_CHECK_COMPILE([if inode timestamps are struct timespec64],
1995 inode_timespec64, [
1996         #include <linux/fs.h>
1997 ],[
1998         struct inode *inode = NULL;
1999         struct timespec64 ts = {};
2000
2001         inode->i_atime = timespec64_trunc(ts, 1);
2002         (void)inode;
2003 ],[
2004         AC_DEFINE(HAVE_INODE_TIMESPEC64, 1,
2005                 [inode times are using timespec64])
2006 ])
2007 EXTRA_KCFLAGS="$tmp_flags"
2008 ]) # LC_INODE_TIMESPEC64
2009
2010 #
2011 # LC_XA_IS_VALUE
2012 # kernel 4.19-rc6 commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
2013 # xarray: Replace exceptional entries
2014 # adds xa_is_value
2015 #
2016 AC_DEFUN([LC_XA_IS_VALUE], [
2017 LB_CHECK_COMPILE([xa_is_value exist],
2018 xa_is_value, [
2019         #include <linux/xarray.h>
2020 ],[
2021         xa_is_value(NULL);
2022 ],[
2023         AC_DEFINE(HAVE_XA_IS_VALUE, 1, [xa_is_value exist])
2024 ])
2025 ]) # LC_XA_IS_VALUE
2026
2027 #
2028 # LC___XA_SET_MARK
2029 #
2030 # kernel 4.20 commit v4.19-rc5-248-g9b89a0355144
2031 # xarray: Add XArray marks
2032 #
2033 AC_DEFUN([LC___XA_SET_MARK], [
2034 LB_CHECK_COMPILE([if '__xa_set_mark' exists],
2035 __xa_set_mark, [
2036         #include <linux/xarray.h>
2037         #include <linux/fs.h>
2038 ],[
2039         struct xarray *xa = NULL;
2040
2041         __xa_set_mark(xa, 0, PAGECACHE_TAG_DIRTY);
2042 ],[
2043         AC_DEFINE(HAVE___XA_SET_MARK, 1,
2044                 [__xa_set_mark exists])
2045 ])
2046 ]) # LC___XA_SET_MARK
2047
2048 #
2049 # LC_UAPI_LINUX_MOUNT_H
2050 #
2051 # kernel 4.20 commit e262e32d6bde0f77fb0c95d977482fc872c51996
2052 # vfs: Suppress MS_* flag defs within the kernel ...
2053 #
2054 AC_DEFUN([LC_UAPI_LINUX_MOUNT_H], [
2055 tmp_flags="$EXTRA_KCFLAGS"
2056 EXTRA_KCFLAGS="-Werror"
2057 LB_CHECK_COMPILE([if MS_RDONLY was moved to uapi/linux/mount.h],
2058 uapi_linux_mount, [
2059         #include <uapi/linux/mount.h>
2060 ],[
2061         int x = MS_RDONLY;
2062         (void)x;
2063 ],[
2064         AC_DEFINE(HAVE_UAPI_LINUX_MOUNT_H, 1,
2065                 [if MS_RDONLY was moved to uapi/linux/mount.h])
2066 ])
2067 EXTRA_KCFLAGS="$tmp_flags"
2068 ]) # LC_UAPI_LINUX_MOUNT_H
2069
2070 #
2071 # LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2072 #
2073 # kernel 4.20 commit 1863d77f15da0addcd293a1719fa5d3ef8cde3ca
2074 # SUNRPC: Replace the cache_detail->hash_lock with a regular spinlock
2075 #
2076 # Now that the reader functions are all RCU protected, use a regular
2077 # spinlock rather than a reader/writer lock.
2078 #
2079 AC_DEFUN([LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK], [
2080 tmp_flags="$EXTRA_KCFLAGS"
2081 EXTRA_KCFLAGS="-Werror"
2082 LB_CHECK_COMPILE([if cache_detail->hash_lock is a spinlock],
2083 hash_lock_isa_spinlock_t, [
2084         #include <linux/sunrpc/cache.h>
2085 ],[
2086         spinlock_t *lock = &(((struct cache_detail *)0)->hash_lock);
2087         spin_lock(lock);
2088 ],[
2089         AC_DEFINE(HAVE_CACHE_HASH_SPINLOCK, 1,
2090                 [if cache_detail->hash_lock is a spinlock])
2091 ])
2092 EXTRA_KCFLAGS="$tmp_flags"
2093 ]) # LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2094
2095 #
2096 # LC_HAS_LINUX_SELINUX_ENABLED
2097 #
2098 # kernel 5.1 commit 3d252529480c68bfd6a6774652df7c8968b28e41
2099 # SELinux: Remove unused selinux_is_enabled
2100 #
2101 AC_DEFUN([LC_HAS_LINUX_SELINUX_ENABLED], [
2102 tmp_flags="$EXTRA_KCFLAGS"
2103 EXTRA_KCFLAGS="-Werror"
2104 LB_CHECK_COMPILE([if linux/selinux.h exists],
2105 selinux_is_enabled, [
2106         #include <linux/selinux.h>
2107 ],[
2108         bool has_selinux = selinux_is_enabled();
2109         (void)has_selinux;
2110 ],[
2111         AC_DEFINE(HAVE_LINUX_SELINUX_IS_ENABLED, 1,
2112                 [if linux/selinux.h exists])
2113 ])
2114 EXTRA_KCFLAGS="$tmp_flags"
2115 ]) # LC_HAS_LINUX_SELINUX_ENABLED
2116
2117 #
2118 # LC_ACCOUNT_PAGE_DIRTIED
2119 #
2120 # After 5.2 kernel page dirtied is not exported
2121 #
2122 AC_DEFUN([LC_ACCOUNT_PAGE_DIRTIED], [
2123 LB_CHECK_EXPORT([account_page_dirtied], [mm/page-writeback.c],
2124         [AC_DEFINE(HAVE_ACCOUNT_PAGE_DIRTIED_EXPORT, 1,
2125                         [account_page_dirtied is exported])])
2126 ]) # LC_ACCOUNT_PAGE_DIRTIED
2127
2128 #
2129 # LC_BIO_BI_PHYS_SEGMENTS
2130 #
2131 # kernel 5.3-rc1 commit 14ccb66b3f585b2bc21e7256c96090abed5a512c
2132 # block: remove the bi_phys_segments field in struct bio
2133 #
2134 AC_DEFUN([LC_BIO_BI_PHYS_SEGMENTS], [
2135 tmp_flags="$EXTRA_KCFLAGS"
2136 EXTRA_KCFLAGS="-Werror"
2137 LB_CHECK_COMPILE([if struct bio has bi_phys_segments member],
2138 bye_bio_bi_phys_segments, [
2139         #include <linux/bio.h>
2140 ],[
2141         struct bio *bio = NULL;
2142         bio->bi_phys_segments++;
2143 ],[
2144         AC_DEFINE(HAVE_BIO_BI_PHYS_SEGMENTS, 1,
2145                 [struct bio has bi_phys_segments member])
2146 ])
2147 EXTRA_KCFLAGS="$tmp_flags"
2148 ]) # LC_BIO_BI_PHYS_SEGMENTS
2149
2150 #
2151 # LC_LM_COMPARE_OWNER_EXISTS
2152 #
2153 # kernel 5.3-rc3 commit f85d93385e9fe6886a751f647f6812a89bf6bee3
2154 # locks: Cleanup lm_compare_owner and lm_owner_key
2155 # removed lm_compare_owner
2156 #
2157 AC_DEFUN([LC_LM_COMPARE_OWNER_EXISTS], [
2158 tmp_flags="$EXTRA_KCFLAGS"
2159 EXTRA_KCFLAGS="-Werror"
2160 LB_CHECK_COMPILE([if lock_manager_operations has lm_compare_owner],
2161 lock_manager_ops_lm_compare_owner, [
2162         #include <linux/fs.h>
2163 ],[
2164         struct lock_manager_operations lm_ops;
2165         lm_ops.lm_compare_owner = NULL;
2166 ],[
2167         AC_DEFINE(HAVE_LM_COMPARE_OWNER, 1,
2168                 [lock_manager_operations has lm_compare_owner])
2169 ])
2170 EXTRA_KCFLAGS="$tmp_flags"
2171 ]) # LC_LM_COMPARE_OWNER_EXISTS
2172
2173 #
2174 # LC_PROG_LINUX
2175 #
2176 # Lustre linux kernel checks
2177 #
2178 AC_DEFUN([LC_PROG_LINUX], [
2179         AC_MSG_NOTICE([Lustre kernel checks
2180 ==============================================================================])
2181
2182         LC_CONFIG_PINGER
2183         LC_CONFIG_CHECKSUM
2184         LC_CONFIG_FLOCK
2185         LC_CONFIG_HEALTH_CHECK_WRITE
2186         LC_CONFIG_LRU_RESIZE
2187         LC_CONFIG_FHANDLE
2188         LC_CONFIG_GSS
2189
2190         LC_GLIBC_SUPPORT_FHANDLES
2191         LC_OPENSSL_SSK
2192         LC_OPENSSL_GETSEPOL
2193
2194         # 3.10
2195         LC_HAVE_PROJECT_QUOTA
2196
2197         # 3.11
2198         LC_INVALIDATE_RANGE
2199         LC_HAVE_DIR_CONTEXT
2200         LC_D_COMPARE_5ARGS
2201         LC_HAVE_DCOUNT
2202         LC_HAVE_DENTRY_D_U_D_ALIAS
2203         LC_HAVE_DENTRY_D_CHILD
2204         LC_PID_NS_FOR_CHILDREN
2205
2206         # 3.12
2207         LC_OLDSIZE_TRUNCATE_PAGECACHE
2208         LC_PTR_ERR_OR_ZERO_MISSING
2209         LC_KIOCB_KI_LEFT
2210         LC_INIT_LIST_HEAD_RCU
2211
2212         # 3.13
2213         LC_VFS_RENAME_5ARGS
2214         LC_VFS_UNLINK_3ARGS
2215         LC_HAVE_D_IS_POSITIVE
2216
2217         # 3.14
2218         LC_HAVE_BVEC_ITER
2219         LC_HAVE_TRUNCATE_IPAGES_FINAL
2220         LC_IOPS_RENAME_WITH_FLAGS
2221         LC_IOP_SET_ACL
2222
2223         # 3.15
2224         LC_VFS_RENAME_6ARGS
2225
2226         # 3.16
2227         LC_DIRECTIO_USE_ITER
2228         LC_HAVE_IOV_ITER_INIT_DIRECTION
2229         LC_HAVE_IOV_ITER_TRUNCATE
2230         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
2231
2232         # 3.17
2233         LC_HAVE_INTERVAL_BLK_INTEGRITY
2234         LC_KEY_MATCH_DATA
2235
2236         # 3.18
2237         LC_PERCPU_COUNTER_INIT
2238         LC_NFS_FILLDIR_USE_CTX
2239
2240         # 3.19
2241         LC_KIOCB_HAS_NBYTES
2242         LC_HAVE_DQUOT_QC_DQBLK
2243         LC_HAVE_AIO_COMPLETE
2244
2245         # 3.20
2246         LC_BACKING_DEV_INFO_REMOVAL
2247         LC_HAVE_BDI_CAP_MAP_COPY
2248
2249         # 4.1.0
2250         LC_IOV_ITER_RW
2251         LC_HAVE_SYNC_READ_WRITE
2252         LC_HAVE___BI_CNT
2253
2254         # 4.2
2255         LC_BIO_ENDIO_USES_ONE_ARG
2256         LC_SYMLINK_OPS_USE_NAMEIDATA
2257         LC_ACCOUNT_PAGE_DIRTIED_3ARGS
2258
2259         # 4.3
2260         LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
2261         LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
2262         LC_HAVE_CACHE_HEAD_HLIST
2263         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2264
2265         # 4.4
2266         LC_HAVE_LOCKS_LOCK_FILE_WAIT
2267         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2268         LC_HAVE_XATTR_HANDLER_NAME
2269         LC_HAVE_BI_OPF
2270         LC_HAVE_SUBMIT_BIO_2ARGS
2271         LC_HAVE_CLEAN_BDEV_ALIASES
2272
2273         # 4.5
2274         LC_HAVE_FILE_DENTRY
2275
2276         # 4.5
2277         LC_HAVE_INODE_LOCK
2278         LC_HAVE_IOP_GET_LINK
2279
2280         # 4.6
2281         LC_HAVE_IN_COMPAT_SYSCALL
2282         LC_HAVE_XATTR_HANDLER_INODE_PARAM
2283         LC_LOCK_PAGE_MEMCG
2284
2285         # 4.7
2286         LC_D_IN_LOOKUP
2287         LC_DIRECTIO_2ARGS
2288         LC_GENERIC_WRITE_SYNC_2ARGS
2289         LC_FOP_ITERATE_SHARED
2290
2291         # 4.8
2292         LC_HAVE_POSIX_ACL_VALID_USER_NS
2293         LC_D_COMPARE_4ARGS
2294         LC_FULL_NAME_HASH_3ARGS
2295         LC_STRUCT_POSIX_ACL_XATTR
2296         LC_IOP_XATTR
2297
2298         # 4.9
2299         LC_GROUP_INFO_GID
2300         LC_VFS_SETXATTR
2301         LC_POSIX_ACL_UPDATE_MODE
2302
2303         # 4.10
2304         LC_IOP_GENERIC_READLINK
2305         LC_HAVE_VM_FAULT_ADDRESS
2306
2307         # 4.11
2308         LC_INODEOPS_ENHANCED_GETATTR
2309         LC_VM_OPERATIONS_REMOVE_VMF_ARG
2310         LC_HAVE_KEY_USAGE_REFCOUNT
2311         LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2312
2313         # 4.12
2314         LC_CURRENT_TIME
2315         LC_SUPER_BLOCK_S_UUID
2316         LC_SUPER_SETUP_BDI_NAME
2317         LC_BI_STATUS
2318
2319         # 4.13
2320         LC_BIO_INTEGRITY_ENABLED
2321
2322         # 4.14
2323         LC_PAGEVEC_INIT_ONE_PARAM
2324         LC_BI_BDEV
2325
2326         # 4.17
2327         LC_VM_FAULT_T
2328         LC_I_PAGES
2329
2330         # 4.18
2331         LC_INODE_TIMESPEC64
2332         LC_XA_IS_VALUE
2333
2334         # 4.20
2335         LC___XA_SET_MARK
2336         LC_UAPI_LINUX_MOUNT_H
2337         LC_HAVE_SUNRPC_CACHE_HASH_LOCK_IS_A_SPINLOCK
2338         LC_REPLACE_EXCEPTIONAL_ENTRIES
2339
2340         # 5.1
2341         LC_HAS_LINUX_SELINUX_ENABLED
2342
2343         # 5.2
2344         LC_ACCOUNT_PAGE_DIRTIED
2345
2346         # 5.3
2347         LC_BIO_BI_PHYS_SEGMENTS
2348         LC_LM_COMPARE_OWNER_EXISTS
2349
2350         # kernel patch to extend integrity interface
2351         LC_BIO_INTEGRITY_PREP_FN
2352
2353         #
2354         AS_IF([test "x$enable_server" != xno], [
2355                 LC_STACK_SIZE
2356                 LC_QUOTA_CONFIG
2357         ])
2358         LC_POSIX_ACL_CONFIG
2359 ]) # LC_PROG_LINUX
2360
2361 #
2362 # LC_CONFIG_CLIENT
2363 #
2364 # Check whether to build the client side of Lustre
2365 #
2366 AC_DEFUN([LC_CONFIG_CLIENT], [
2367 AC_MSG_CHECKING([whether to build Lustre client support])
2368 AC_ARG_ENABLE([client],
2369         AC_HELP_STRING([--disable-client],
2370                 [disable Lustre client support]),
2371         [], [enable_client="yes"])
2372 AC_MSG_RESULT([$enable_client])
2373 ]) # LC_CONFIG_CLIENT
2374
2375 #
2376 # --enable-mpitests
2377 #
2378 AC_DEFUN([LB_CONFIG_MPITESTS], [
2379 AC_ARG_ENABLE([mpitests],
2380         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
2381                        [include mpi tests]), [
2382                 enable_mpitests="yes"
2383                 case $enableval in
2384                 yes)
2385                         MPICC_WRAPPER="mpicc"
2386                         MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
2387                         ;;
2388                 no)
2389                         enable_mpitests="no"
2390                         MPI_BIN=""
2391                         ;;
2392                 *)
2393                         MPICC_WRAPPER=$enableval
2394                         MPI_BIN=$(eval echo $MPICC_WRAPPER | xargs dirname)
2395                         ;;
2396                 esac
2397         ], [
2398                 enable_mpitests="yes"
2399                 MPICC_WRAPPER="mpicc"
2400                 MPI_BIN=$(eval which $MPICC_WRAPPER | xargs dirname)
2401         ])
2402
2403         if test "x$enable_mpitests" != "xno"; then
2404                 oldcc=$CC
2405                 CC=$MPICC_WRAPPER
2406                 AC_CACHE_CHECK([whether mpitests can be built],
2407                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2408                         #include <mpi.h>
2409                         int main(void) {
2410                                 int flag;
2411                                 MPI_Initialized(&flag);
2412                                 return 0;
2413                         }
2414                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
2415                 ])
2416                 enable_mpitests=$lb_cv_mpi_tests
2417                 CC=$oldcc
2418         fi
2419         AC_SUBST(MPI_BIN)
2420         AC_SUBST(MPICC_WRAPPER)
2421 ]) # LB_CONFIG_MPITESTS
2422
2423 #
2424 # LC_CONFIG_QUOTA
2425 #
2426 # whether to enable quota support global control
2427 #
2428 AC_DEFUN([LC_CONFIG_QUOTA], [
2429 AC_MSG_CHECKING([whether to enable quota support global control])
2430 AC_ARG_ENABLE([quota],
2431         AC_HELP_STRING([--enable-quota],
2432                 [enable quota support]),
2433         [], [enable_quota="yes"])
2434 AS_IF([test "x$enable_quota" = xyes],
2435         [AC_MSG_RESULT([yes])],
2436         [AC_MSG_RESULT([no])])
2437 ]) # LC_CONFIG_QUOTA
2438
2439 #
2440 # LC_QUOTA
2441 #
2442 AC_DEFUN([LC_QUOTA], [
2443 #check global
2444 LC_CONFIG_QUOTA
2445 #check for utils
2446 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
2447         AC_CHECK_HEADER([sys/quota.h],
2448                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
2449                         [Define to 1 if you have <sys/quota.h>.])],
2450                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2451 ])
2452 ]) # LC_QUOTA
2453
2454 #
2455 # LC_OSD_ADDON
2456 #
2457 # configure support for optional OSD implementation
2458 #
2459 AC_DEFUN([LC_OSD_ADDON], [
2460 AC_MSG_CHECKING([whether to use OSD addon])
2461 AC_ARG_WITH([osd],
2462         AC_HELP_STRING([--with-osd=path],
2463                 [set path to optional osd]),
2464         [
2465         case "$with_osd" in
2466         no)
2467                 ENABLEOSDADDON=0
2468                 ;;
2469         *)
2470                 OSDADDON="$with_osd"
2471                 ENABLEOSDADDON=1
2472                 ;;
2473         esac
2474         ], [
2475                 ENABLEOSDADDON=0
2476         ])
2477 AS_IF([test $ENABLEOSDADDON -eq 0], [
2478         AC_MSG_RESULT([no])
2479         OSDADDON=""
2480 ], [
2481         OSDMODNAME=$(basename $OSDADDON)
2482         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
2483                 AC_MSG_RESULT([can't link])
2484                 OSDADDON=""
2485         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
2486                 AC_MSG_RESULT([$OSDMODNAME])
2487                 OSDADDON="obj-m += $OSDMODNAME/"
2488         ], [
2489                 AC_MSG_RESULT([can't link])
2490                 OSDADDON=""
2491         ])
2492 ])
2493 AC_SUBST(OSDADDON)
2494 ]) # LC_OSD_ADDON
2495
2496 #
2497 # LC_CONFIGURE
2498 #
2499 # other configure checks
2500 #
2501 AC_DEFUN([LC_CONFIGURE], [
2502 AC_MSG_NOTICE([Lustre core checks
2503 ==============================================================================])
2504
2505 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
2506         [CFLAGS="$CFLAGS -Wall -Werror"])
2507
2508 # maximum MDS thread count
2509 LC_MDS_MAX_THREADS
2510
2511 # lustre/utils/gss/gss_util.c
2512 # lustre/utils/gss/gssd_proc.c
2513 # lustre/utils/gss/krb5_util.c
2514 # lustre/utils/llog_reader.c
2515 # lustre/utils/create_iam.c
2516 # lustre/utils/libiam.c
2517 AC_CHECK_HEADERS([netdb.h endian.h])
2518 AC_CHECK_FUNCS([gethostbyname])
2519
2520 # lustre/utils/llverfs.c lustre/utils/libmount_utils_ldiskfs.c
2521 AC_CHECK_HEADERS([ext2fs/ext2fs.h], [], [
2522         AS_IF([test "x$enable_utils" = xyes -a "x$enable_ldiskfs" = xyes], [
2523                 AC_MSG_ERROR([
2524 ext2fs.h not found. Please install e2fsprogs development package.
2525                 ])
2526         ])
2527 ])
2528
2529 # lustre/utils/lfs.c
2530 AS_IF([test "$enable_dist" = "no"], [
2531                 AC_CHECK_LIB([z], [crc32], [
2532                                  AC_CHECK_HEADER([zlib.h], [], [
2533                                                  AC_MSG_ERROR([zlib.h not found.])])
2534                                  ], [
2535                                  AC_MSG_ERROR([
2536                 zlib library not found. Please install zlib development package.])
2537                 ])
2538 ])
2539
2540 SELINUX=""
2541
2542 AC_CHECK_LIB([selinux], [is_selinux_enabled],
2543         [AC_CHECK_HEADERS([selinux/selinux.h],
2544                         [SELINUX="-lselinux"
2545                         AC_DEFINE([HAVE_SELINUX], 1,
2546                                 [support for selinux ])],
2547                         [AC_MSG_WARN([
2548
2549 No libselinux-devel package found, unable to build selinux enabled tools
2550 ])
2551 ])],
2552         [AC_MSG_WARN([
2553
2554 No selinux package found, unable to build selinux enabled tools
2555 ])
2556 ])
2557 AC_SUBST(SELINUX)
2558
2559 # Super safe df
2560 AC_MSG_CHECKING([whether to report minimum OST free space])
2561 AC_ARG_ENABLE([mindf],
2562         AC_HELP_STRING([--enable-mindf],
2563                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2564         [], [enable_mindf="no"])
2565 AC_MSG_RESULT([$enable_mindf])
2566 AS_IF([test "$enable_mindf" = "yes"],
2567         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
2568
2569 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2570 AC_ARG_ENABLE([fail_alloc],
2571         AC_HELP_STRING([--disable-fail-alloc],
2572                 [disable randomly alloc failure]),
2573         [], [enable_fail_alloc="yes"])
2574 AC_MSG_RESULT([$enable_fail_alloc])
2575 AS_IF([test "x$enable_fail_alloc" != xno],
2576         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
2577                 [enable randomly alloc failure])])
2578
2579 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2580 AC_ARG_ENABLE([invariants],
2581         AC_HELP_STRING([--enable-invariants],
2582                 [enable invariant checking (cpu intensive)]),
2583         [], [enable_invariants="no"])
2584 AC_MSG_RESULT([$enable_invariants])
2585 AS_IF([test "x$enable_invariants" = xyes],
2586         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
2587                 [enable invariant checking])])
2588
2589 AC_MSG_CHECKING([whether to track references with lu_ref])
2590 AC_ARG_ENABLE([lu_ref],
2591         AC_HELP_STRING([--enable-lu_ref],
2592                 [enable lu_ref reference tracking code]),
2593         [], [enable_lu_ref="no"])
2594 AC_MSG_RESULT([$enable_lu_ref])
2595 AS_IF([test "x$enable_lu_ref" = xyes],
2596         [AC_DEFINE([USE_LU_REF], 1,
2597                 [enable lu_ref reference tracking code])])
2598
2599 AC_MSG_CHECKING([whether to enable page state tracking])
2600 AC_ARG_ENABLE([pgstate-track],
2601         AC_HELP_STRING([--enable-pgstate-track],
2602                 [enable page state tracking]),
2603         [], [enable_pgstat_track="no"])
2604 AC_MSG_RESULT([$enable_pgstat_track])
2605 AS_IF([test "x$enable_pgstat_track" = xyes],
2606         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
2607                 [enable page state tracking code])])
2608
2609 PKG_PROG_PKG_CONFIG
2610 AC_MSG_CHECKING([systemd unit file directory])
2611 AC_ARG_WITH([systemdsystemunitdir],
2612         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
2613                 [Directory for systemd service files])],
2614         [], [with_systemdsystemunitdir=auto])
2615 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
2616         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
2617         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
2618                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
2619                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
2620                 with_systemdsystemunitdir=no],
2621         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
2622 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
2623         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
2624 AC_MSG_RESULT([$with_systemdsystemunitdir])
2625
2626 AC_MSG_CHECKING([bash-completion directory])
2627 AC_ARG_WITH([bash-completion-dir],
2628         AS_HELP_STRING([--with-bash-completion-dir[=PATH]],
2629                 [Install the bash auto-completion script in this directory.]),
2630         [],
2631         [with_bash_completion_dir=yes])
2632 AS_IF([test "x$with_bash_completion_dir" = "xyes"], [
2633         BASH_COMPLETION_DIR="`pkg-config --variable=completionsdir bash-completion`"
2634         AS_IF([test "x$BASH_COMPLETION_DIR" = "x"], [
2635                 [BASH_COMPLETION_DIR="$datadir/bash-completion/completions"]
2636         ])
2637 ], [
2638         BASH_COMPLETION_DIR="$with_bash_completion_dir"
2639 ])
2640 AC_SUBST([BASH_COMPLETION_DIR])
2641 AC_MSG_RESULT([$BASH_COMPLETION_DIR])
2642 ]) # LC_CONFIGURE
2643
2644 #
2645 # LC_CONDITIONALS
2646 #
2647 # AM_CONDITIONALS for lustre
2648 #
2649 AC_DEFUN([LC_CONDITIONALS], [
2650 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2651 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2652 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2653 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2654 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2655 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2656 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2657 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2658 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
2659 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2660 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
2661 AM_CONDITIONAL(ENABLE_BASH_COMPLETION, test "x$with_bash_completion_dir" != "xno")
2662 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
2663 AM_CONDITIONAL(SELINUX, test "$SELINUX" = "-lselinux")
2664 AM_CONDITIONAL(GETSEPOL, test x$enable_getsepol = xyes)
2665 ]) # LC_CONDITIONALS
2666
2667 #
2668 # LC_CONFIG_FILES
2669 #
2670 # files that should be generated with AC_OUTPUT
2671 #
2672 AC_DEFUN([LC_CONFIG_FILES],
2673 [AC_CONFIG_FILES([
2674 lustre/Makefile
2675 lustre/autoMakefile
2676 lustre/autoconf/Makefile
2677 lustre/conf/Makefile
2678 lustre/conf/resource/Makefile
2679 lustre/contrib/Makefile
2680 lustre/doc/Makefile
2681 lustre/include/Makefile
2682 lustre/include/lustre/Makefile
2683 lustre/include/uapi/linux/lustre/Makefile
2684 lustre/kernel_patches/targets/4.18-rhel8.1.target
2685 lustre/kernel_patches/targets/4.18-rhel8.target
2686 lustre/kernel_patches/targets/3.10-rhel7.7.target
2687 lustre/kernel_patches/targets/3.10-rhel7.6.target
2688 lustre/kernel_patches/targets/3.10-rhel7.5.target
2689 lustre/kernel_patches/targets/4.14-rhel7.5.target
2690 lustre/kernel_patches/targets/4.14-rhel7.6.target
2691 lustre/kernel_patches/targets/3.0-sles11.target
2692 lustre/kernel_patches/targets/3.0-sles11sp3.target
2693 lustre/kernel_patches/targets/3.0-sles11sp4.target
2694 lustre/kernel_patches/targets/3.12-sles12.target
2695 lustre/kernel_patches/targets/4.4-sles12.target
2696 lustre/kernel_patches/targets/4.4-sles12sp3.target
2697 lustre/kernel_patches/targets/4.12-sles12sp4.target
2698 lustre/kernel_patches/targets/4.12-sles15sp1.target
2699 lustre/kernel_patches/targets/3.x-fc18.target
2700 lustre/ldlm/Makefile
2701 lustre/fid/Makefile
2702 lustre/fid/autoMakefile
2703 lustre/llite/Makefile
2704 lustre/llite/autoMakefile
2705 lustre/lov/Makefile
2706 lustre/lov/autoMakefile
2707 lustre/mdc/Makefile
2708 lustre/mdc/autoMakefile
2709 lustre/lmv/Makefile
2710 lustre/lmv/autoMakefile
2711 lustre/lfsck/Makefile
2712 lustre/lfsck/autoMakefile
2713 lustre/mdt/Makefile
2714 lustre/mdt/autoMakefile
2715 lustre/mdd/Makefile
2716 lustre/mdd/autoMakefile
2717 lustre/fld/Makefile
2718 lustre/fld/autoMakefile
2719 lustre/obdclass/Makefile
2720 lustre/obdclass/autoMakefile
2721 lustre/obdecho/Makefile
2722 lustre/obdecho/autoMakefile
2723 lustre/ofd/Makefile
2724 lustre/ofd/autoMakefile
2725 lustre/osc/Makefile
2726 lustre/osc/autoMakefile
2727 lustre/ost/Makefile
2728 lustre/ost/autoMakefile
2729 lustre/osd-ldiskfs/Makefile
2730 lustre/osd-ldiskfs/autoMakefile
2731 lustre/osd-zfs/Makefile
2732 lustre/osd-zfs/autoMakefile
2733 lustre/mgc/Makefile
2734 lustre/mgc/autoMakefile
2735 lustre/mgs/Makefile
2736 lustre/mgs/autoMakefile
2737 lustre/target/Makefile
2738 lustre/ptlrpc/Makefile
2739 lustre/ptlrpc/autoMakefile
2740 lustre/ptlrpc/gss/Makefile
2741 lustre/ptlrpc/gss/autoMakefile
2742 lustre/quota/Makefile
2743 lustre/quota/autoMakefile
2744 lustre/scripts/Makefile
2745 lustre/scripts/systemd/Makefile
2746 lustre/tests/Makefile
2747 lustre/tests/mpi/Makefile
2748 lustre/tests/kernel/Makefile
2749 lustre/tests/kernel/autoMakefile
2750 lustre/utils/Makefile
2751 lustre/utils/gss/Makefile
2752 lustre/osp/Makefile
2753 lustre/osp/autoMakefile
2754 lustre/lod/Makefile
2755 lustre/lod/autoMakefile
2756 ])
2757 ]) # LC_CONFIG_FILES