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_HEALTH_CHECK_WRITE
 127 #
 128 # Turn off the actual write to the disk
 129 #
 130 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 131 AC_MSG_CHECKING([whether to enable a write with the health check])
 132 AC_ARG_ENABLE([health_write],
 133         AC_HELP_STRING([--enable-health_write],
 134                 [enable disk writes when doing health check]),
 135         [], [enable_health_write="no"])
 136 AC_MSG_RESULT([$enable_health_write])
 137 AS_IF([test "x$enable_health_write" != xno],
 138         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 139 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 140
 141 #
 142 # LC_CONFIG_LRU_RESIZE
 143 #
 144 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 145 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 146 AC_ARG_ENABLE([lru_resize],
 147         AC_HELP_STRING([--enable-lru-resize],
 148                 [enable lru resize support]),
 149         [], [enable_lru_resize="yes"])
 150 AC_MSG_RESULT([$enable_lru_resize])
 151 AS_IF([test "x$enable_lru_resize" != xno],
 152         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 153 ]) # LC_CONFIG_LRU_RESIZE
 154
 155 #
 156 # LC_QUOTA_CONFIG
 157 #
 158 # Quota support. The kernel must support CONFIG_QUOTA.
 159 #
 160 AC_DEFUN([LC_QUOTA_CONFIG], [
 161 LB_CHECK_CONFIG_IM([QUOTA], [],
 162         [AC_MSG_ERROR([
 163
 164 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 165 ])])
 166 ]) # LC_QUOTA_CONFIG
 167
 168 #
 169 # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 170 #
 171 # truncate_complete_page() has never been exported from an upstream kernel
 172 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 173 # delete_from_page_cache() is exported from 2.6.39
 174 #
 175 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE], [
 176 LB_CHECK_EXPORT([truncate_complete_page], [mm/truncate.c],
 177         [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 178                 [kernel export truncate_complete_page])])
 179 LB_CHECK_EXPORT([remove_from_page_cache], [mm/filemap.c],
 180         [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 181                 [kernel export remove_from_page_cache])])
 182 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
 183         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 184                 [kernel export delete_from_page_cache])])
 185 ]) # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 186
 187 #
 188 # LC_CONFIG_GSS_KEYRING
 189 #
 190 # default 'auto', tests for dependencies, if found, enables;
 191 # only called if gss is enabled
 192 #
 193 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 194 AC_MSG_CHECKING([whether to enable gss keyring backend])
 195 AC_ARG_ENABLE([gss_keyring],
 196         [AC_HELP_STRING([--disable-gss-keyring],
 197                 [disable gss keyring backend])],
 198         [], [enable_gss_keyring="auto"])
 199 AC_MSG_RESULT([$enable_gss_keyring])
 200 AS_IF([test "x$enable_gss_keyring" != xno], [
 201         LB_CHECK_CONFIG_IM([KEYS], [], [
 202                 gss_keyring_conf_test="fail"
 203                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 204
 205         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 206                 gss_keyring_conf_test="fail"
 207                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 208
 209         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 210                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 211                         [Define this if you enable gss keyring backend])
 212                 enable_gss_keyring="yes"
 213         ], [
 214                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 215                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 216                 ])
 217         ])
 218 ])
 219 ]) # LC_CONFIG_GSS_KEYRING
 220
 221 #
 222 # LC_HAVE_CRED_TGCRED
 223 #
 224 # rhel7 struct cred has no member tgcred
 225 #
 226 AC_DEFUN([LC_HAVE_CRED_TGCRED], [
 227 LB_CHECK_COMPILE([if 'struct cred' has member 'tgcred'],
 228 cred_tgcred, [
 229         #include <linux/cred.h>
 230 ],[
 231         ((struct cred *)0)->tgcred = NULL;
 232 ],[
 233         AC_DEFINE(HAVE_CRED_TGCRED, 1,
 234                 [struct cred has member tgcred])
 235 ])
 236 ]) # LC_HAVE_CRED_TGCRED
 237
 238 #
 239 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 240 #
 241 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 242 #
 243 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 244 LB_CHECK_COMPILE([if 'key_type->instantiate' has two args],
 245 key_type_instantiate_2args, [
 246         #include <linux/key-type.h>
 247 ],[
 248         ((struct key_type *)0)->instantiate(0, NULL);
 249 ],[
 250         AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 251                 [key_type->instantiate has two args])
 252 ])
 253 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 254
 255 #
 256 # LC_CONFIG_SUNRPC
 257 #
 258 AC_DEFUN([LC_CONFIG_SUNRPC], [
 259 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 260         AS_IF([test "x$sunrpc_required" = xyes], [
 261                 AC_MSG_ERROR([
 262
 263 kernel SUNRPC support is required by using GSS.
 264 ])
 265         ])])
 266 ]) # LC_CONFIG_SUNRPC
 267
 268 #
 269 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 270 #
 271 # Build gss and related tools of Lustre. Currently both kernel and user space
 272 # parts are depend on linux platform.
 273 #
 274 AC_DEFUN([LC_CONFIG_GSS], [
 275 AC_MSG_CHECKING([whether to enable gss support])
 276 AC_ARG_ENABLE([gss],
 277         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 278         [], [enable_gss="auto"])
 279 AC_MSG_RESULT([$enable_gss])
 280
 281 AS_IF([test "x$enable_gss" != xno], [
 282         LC_CONFIG_GSS_KEYRING
 283         LC_HAVE_CRED_TGCRED
 284         LC_KEY_TYPE_INSTANTIATE_2ARGS
 285         sunrpc_required=$enable_gss
 286         LC_CONFIG_SUNRPC
 287         sunrpc_required="no"
 288
 289         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 290                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 291         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 292                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 293         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 294                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 295         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 296                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 297
 298         require_krb5=$enable_gss
 299         AC_KERBEROS_V5
 300         require_krb5="no"
 301
 302         AS_IF([test -n "$KRBDIR"], [
 303                 gss_conf_test="success"
 304         ], [
 305                 gss_conf_test="failure"
 306         ])
 307
 308         AS_IF([test "x$gss_conf_test" = xsuccess && test "x$enable_gss" != xno], [
 309                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 310                 enable_gss="yes"
 311         ], [
 312                 enable_gss_keyring="no"
 313                 enable_gss="no"
 314         ])
 315
 316         enable_ssk=$enable_gss
 317 ], [
 318         enable_gss_keyring="no"
 319 ])
 320 ]) # LC_CONFIG_GSS
 321
 322 # LC_OPENSSL_SSK
 323 #
 324 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 325 AC_DEFUN([LC_OPENSSL_SSK], [
 326 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 327 AS_IF([test "x$enable_ssk" != xno], [
 328 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 329         #include <openssl/hmac.h>
 330         #include <openssl/evp.h>
 331
 332         int main(void) {
 333                 int rc;
 334                 rc = HMAC_Init_ex(NULL, "test", 4, EVP_md_null(), NULL);
 335         }
 336 ])],[AC_DEFINE(HAVE_OPENSSL_SSK, 1,
 337                [OpenSSL HMAC functions needed for SSK])],
 338         [enable_ssk="no"])
 339 ])
 340 AC_MSG_RESULT([$enable_ssk])
 341 ]) # LC_OPENSSL_SSK
 342
 343 # LC_INODE_PERMISION_2ARGS
 344 #
 345 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 346 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 347 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 348 # v3.1 onward have a 2 arg version (inode, mask)
 349 #
 350 AC_DEFUN([LC_INODE_PERMISION_2ARGS], [
 351 LB_CHECK_COMPILE([if 'inode_operations->permission' has two args],
 352 inode_ops_permission_2args, [
 353         #include <linux/fs.h>
 354 ],[
 355         struct inode *inode __attribute__ ((unused));
 356
 357         inode = NULL;
 358         inode->i_op->permission(NULL, 0);
 359 ],[
 360         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 361                 [inode_operations->permission has two args])
 362 ])
 363 ]) # LC_INODE_PERMISION_2ARGS
 364
 365 #
 366 # LC_BLK_QUEUE_MAX_SEGMENTS
 367 #
 368 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 369 #
 370 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS], [
 371 LB_CHECK_COMPILE([if 'blk_queue_max_segments' is defined],
 372 blk_queue_max_segments, [
 373         #include <linux/blkdev.h>
 374 ],[
 375         blk_queue_max_segments(NULL, 0);
 376 ],[
 377         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 378                 [blk_queue_max_segments is defined])
 379 ])
 380 ]) # LC_BLK_QUEUE_MAX_SEGMENTS
 381
 382 #
 383 # LC_HAVE_XATTR_HANDLER_FLAGS
 384 #
 385 # 2.6.33 added a private flag to xattr_handler
 386 #
 387 AC_DEFUN([LC_HAVE_XATTR_HANDLER_FLAGS], [
 388 LB_CHECK_COMPILE([if 'struct xattr_handler' has flags field],
 389 xattr_handler_flags, [
 390         #include <linux/xattr.h>
 391 ],[
 392         struct xattr_handler handler;
 393
 394         handler.flags = 0;
 395 ],[
 396         AC_DEFINE(HAVE_XATTR_HANDLER_FLAGS, 1, [flags field exist])
 397 ])
 398 ]) # LC_HAVE_XATTR_HANDLER_FLAGS
 399
 400 #
 401 # LC_HAVE_DQUOT_FS_DISK_QUOTA
 402 #
 403 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 404 #
 405 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA], [
 406 tmp_flags="$EXTRA_KCFLAGS"
 407 EXTRA_KCFLAGS="-Werror"
 408 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct fs_disk_quota],
 409 fs_disk_quota, [
 410         #include <linux/fs.h>
 411         #include <linux/quota.h>
 412 ],[
 413         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 414 ],[
 415         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 416                 [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 417 ],[
 418         LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct kqid & fs_disk_quota],
 419         kqid_fs_disk_quota, [
 420                 #include <linux/fs.h>
 421                 #include <linux/quota.h>
 422         ],[
 423                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 424         ],[
 425                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 426                         [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 427                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
 428                         [quotactl_ops.set_dqblk takes struct kqid])
 429         ])
 430 ])
 431 EXTRA_KCFLAGS="$tmp_flags"
 432 ]) # LC_HAVE_DQUOT_FS_DISK_QUOTA
 433
 434 #
 435 # LC_HAVE_DQUOT_SUSPEND
 436 #
 437 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 438 #
 439 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND], [
 440 LB_CHECK_COMPILE([if 'dquot_suspend' is defined],
 441 dquot_suspend, [
 442         #include <linux/quotaops.h>
 443 ],[
 444         dquot_suspend(NULL, -1);
 445 ],[
 446         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 447 ])
 448 ]) # LC_HAVE_DQUOT_SUSPEND
 449
 450 #
 451 # LC_QUOTA64
 452 #
 453 # Check if kernel has been patched for 64-bit quota limits support.
 454 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 455 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 456 # that in the absence of quotaio_v1.h in the kernel headers.
 457 #
 458 AC_DEFUN([LC_QUOTA64], [
 459 tmp_flags="$EXTRA_KCFLAGS"
 460 EXTRA_KCFLAGS="-I$LINUX/fs"
 461 LB_CHECK_COMPILE([if kernel has 64-bit quota limits support],
 462 quota64, [
 463         #include <linux/kernel.h>
 464         #include <linux/fs.h>
 465         #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 466         #include <quota/quotaio_v2.h>
 467         struct v2r1_disk_dqblk dqblk_r1;
 468         #else
 469         #include <linux/quota.h>
 470         int ver = QFMT_VFS_V1;
 471         #endif
 472 ], [], [
 473         AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 474 ],[
 475         LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],
 476                 [AC_MSG_ERROR([You have got no 64-bit kernel quota support.])])
 477 ])
 478 EXTRA_KCFLAGS=$tmp_flags
 479 ]) # LC_QUOTA64
 480
 481 #
 482 # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 483 #
 484 # 2.6.34 adds __add_wait_queue_exclusive
 485 #
 486 AC_DEFUN([LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE], [
 487 LB_CHECK_COMPILE([if '__add_wait_queue_exclusive' exists],
 488 __add_wait_queue_exclusive, [
 489         #include <linux/wait.h>
 490 ],[
 491         wait_queue_head_t queue = { };
 492         wait_queue_t wait = { };
 493
 494         __add_wait_queue_exclusive(&queue, &wait);
 495 ],[
 496         AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
 497                   [__add_wait_queue_exclusive exists])
 498 ])
 499 ]) # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 500
 501 #
 502 # LC_FS_STRUCT_RWLOCK
 503 #
 504 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 505 #
 506 AC_DEFUN([LC_FS_STRUCT_RWLOCK], [
 507 LB_CHECK_COMPILE([if 'fs_struct.lock' use rwlock],
 508 fs_struct_rwlock, [
 509         #include <asm/atomic.h>
 510         #include <linux/spinlock.h>
 511         #include <linux/fs_struct.h>
 512 ],[
 513         struct fs_struct fss = { };
 514         rwlock_t rwl = { };
 515
 516         fss.lock = rwl;
 517 ],[
 518         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1, [fs_struct.lock use rwlock])
 519 ])
 520 ]) # LC_FS_STRUCT_RWLOCK
 521
 522 #
 523 # LC_SBOPS_EVICT_INODE
 524 #
 525 # 2.6.36 super_operations add evict_inode method. it hybird of
 526 # delete_inode & clear_inode.
 527 #
 528 AC_DEFUN([LC_SBOPS_EVICT_INODE], [
 529 LB_CHECK_COMPILE([if 'super_operations.evict_inode' exist],
 530 super_ops_evict_inode, [
 531         #include <linux/fs.h>
 532 ],[
 533         ((struct super_operations *)0)->evict_inode(NULL);
 534 ],[
 535         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 536                 [super_operations.evict_inode() is exist in kernel])
 537 ])
 538 ]) # LC_SBOPS_EVICT_INODE
 539
 540 #
 541 # LC_FILE_FSYNC
 542 #
 543 # 2.6.35 file_operations.fsync taken 2 arguments.
 544 # 3.0.0 file_operations.fsync takes 4 arguments.
 545 #
 546 AC_DEFUN([LC_FILE_FSYNC], [
 547 LB_CHECK_COMPILE([if 'file_operations.fsync' takes 4 arguments],
 548 file_ops_fsync_4args, [
 549         #include <linux/fs.h>
 550 ],[
 551         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 552 ],[
 553         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 554                 [file_operations.fsync takes 4 arguments])
 555 ],[
 556         LB_CHECK_COMPILE([if 'file_operations.fsync' takes 2 arguments],
 557         file_ops_fsync_2args, [
 558                 #include <linux/fs.h>
 559         ],[
 560                 ((struct file_operations *)0)->fsync(NULL, 0);
 561         ],[
 562                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 563                         [file_operations.fsync takes 2 arguments])
 564         ])
 565 ])
 566 ]) # LC_FILE_FSYNC
 567
 568 #
 569 # LC_KERNEL_LOCKED
 570 #
 571 # 2.6.37 remove kernel_locked
 572 #
 573 AC_DEFUN([LC_KERNEL_LOCKED], [
 574 LB_CHECK_COMPILE([if 'kernel_locked' is defined],
 575 kernel_locked, [
 576         #include <linux/smp_lock.h>
 577 ],[
 578         kernel_locked();
 579 ],[
 580         AC_DEFINE(HAVE_KERNEL_LOCKED, 1, [kernel_locked is defined])
 581 ])
 582 ]) # LC_KERNEL_LOCKED
 583
 584 #
 585 # LC_FS_STRUCT_SEQCOUNT
 586 #
 587 # 2.6.37 uses seqlock in fs_struct
 588 #
 589 AC_DEFUN([LC_FS_STRUCT_SEQCOUNT], [
 590 LB_CHECK_COMPILE([if fs_struct use seqcount],
 591 fs_struct_seqcount, [
 592         #include <linux/fs_struct.h>
 593 ],[
 594         ((struct fs_struct *)0)->seq = (struct seqcount){ 0 };
 595 ],[
 596         AC_DEFINE(HAVE_FS_STRUCT_SEQCOUNT, 1, [fs_struct use seqcount])
 597 ])
 598 ]) # LC_FS_STRUCT_SEQCOUNT
 599
 600 #
 601 # LC_D_COMPARE_7ARGS
 602 #
 603 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 604 #
 605 AC_DEFUN([LC_D_COMPARE_7ARGS], [
 606 LB_CHECK_COMPILE([if 'dentry_operations.d_compare()' taken 7 arguments],
 607 dentry_ops_d_compare_7arg, [
 608         #include <linux/dcache.h>
 609 ],[
 610         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 611 ],[
 612         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1, [d_compare need 7 arguments])
 613 ])
 614 ]) # LC_D_COMPARE_7ARGS
 615
 616 #
 617 # LC_D_DELETE_CONST
 618 #
 619 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 620 #
 621 AC_DEFUN([LC_D_DELETE_CONST], [
 622 tmp_flags="$EXTRA_KCFLAGS"
 623 EXTRA_KCFLAGS="-Werror"
 624 LB_CHECK_COMPILE([if 'dentry_operations.d_delete()' has const declare on first parameter],
 625 dentry_ops_d_delete_1st_const, [
 626         #include <linux/dcache.h>
 627 ],[
 628         const struct dentry *d = NULL;
 629         ((struct dentry_operations*)0)->d_delete(d);
 630 ],[
 631         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 632                 [d_delete first parameter declared const])
 633 ],[
 634         AC_DEFINE(HAVE_D_DELETE_CONST, [],
 635                 [d_delete first parameter declared is not const])
 636 ])
 637 EXTRA_KCFLAGS="$tmp_flags"
 638 ]) # LC_D_DELETE_CONST
 639
 640 #
 641 # LC_DCACHE_LOCK
 642 #
 643 # 2.6.38 dcache_lock removed. rcu-walk committed.
 644 #
 645 AC_DEFUN([LC_DCACHE_LOCK], [
 646 LB_CHECK_COMPILE([if 'dcache_lock' is exist],
 647 dcache_lock, [
 648         #include <linux/dcache.h>
 649 ],[
 650         spin_lock(&dcache_lock);
 651 ],[
 652         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 653                 [dcache_lock is exist])
 654 ])
 655 ]) # LC_DCACHE_LOCK
 656
 657 #
 658 # LC_INODE_I_RCU
 659 #
 660 # 2.6.38 inode.i_rcu added.
 661 #
 662 AC_DEFUN([LC_INODE_I_RCU], [
 663 LB_CHECK_COMPILE([if 'inode.i_rcu' exists],
 664 inode_i_rcu, [
 665         #include <linux/fs.h>
 666 ],[
 667         struct inode ino;
 668         struct rcu_head rcu = {};
 669         ino.i_rcu = rcu;
 670 ],[
 671         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 672                 [inode.i_rcu exists])
 673 ])
 674 ]) # LC_INODE_I_RCU
 675
 676 #
 677 # LC_BLKDEV_GET_BY_DEV
 678 #
 679 # 2.6.38 export blkdev_get_by_dev
 680 #
 681 AC_DEFUN([LC_BLKDEV_GET_BY_DEV], [
 682 LB_CHECK_EXPORT([blkdev_get_by_dev], [fs/block_dev.c],
 683         [AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 684                 [blkdev_get_by_dev is exported by the kernel])])
 685 ]) # LC_BLKDEV_GET_BY_DEV
 686
 687 #
 688 # LC_EXPORT_SIMPLE_SETATTR
 689 #
 690 # 2.6.38 export simple_setattr
 691 #
 692 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR], [
 693 LB_CHECK_EXPORT([simple_setattr], [fs/libfs.c],
 694         [AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 695                 [simple_setattr is exported by the kernel])])
 696 ]) # LC_EXPORT_SIMPLE_SETATTR
 697
 698 #
 699 # LC_HAVE_BLK_PLUG
 700 #
 701 # 2.6.38 add struct blk_plug
 702 #
 703 AC_DEFUN([LC_HAVE_BLK_PLUG], [
 704 LB_CHECK_COMPILE([if 'struct blk_plug' exists],
 705 blk_plug, [
 706         #include <linux/blkdev.h>
 707 ],[
 708         struct blk_plug plug;
 709
 710         blk_start_plug(&plug);
 711         blk_finish_plug(&plug);
 712 ],[
 713         AC_DEFINE(HAVE_BLK_PLUG, 1,
 714                 [blk_plug struct exists])
 715 ])
 716 ]) # LC_HAVE_BLK_PLUG
 717
 718 #
 719 # LC_HAVE_FSTYPE_MOUNT
 720 #
 721 # 2.6.39 replace get_sb with mount in struct file_system_type
 722 #
 723 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT], [
 724 LB_CHECK_COMPILE([if 'file_system_type' has 'mount' field],
 725 file_system_type_mount, [
 726         #include <linux/fs.h>
 727 ],[
 728         struct file_system_type fst = { };
 729         void *mount;
 730
 731         mount = (void *)fst.mount;
 732 ],[
 733         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 734                 [struct file_system_type has mount field])
 735 ])
 736 ]) # LC_HAVE_FSTYPE_MOUNT
 737
 738 #
 739 # LC_HAVE_FHANDLE_SYSCALLS
 740 #
 741 # 2.6.39 The open_by_handle_at() and name_to_handle_at() system calls were
 742 # added to Linux kernel 2.6.39.
 743 # Check if client supports these functions
 744 #
 745 AC_DEFUN([LC_HAVE_FHANDLE_SYSCALLS], [
 746 LB_CHECK_CONFIG_IM([FHANDLE],[
 747         AC_DEFINE(HAVE_FHANDLE_SYSCALLS, 1,
 748                 [kernel supports fhandles and related syscalls])
 749         ])
 750 ]) # LC_HAVE_FHANDLE_SYSCALLS
 751
 752 #
 753 # LC_HAVE_INODE_OWNER_OR_CAPABLE
 754 #
 755 # 2.6.39 renames is_owner_or_cap to inode_owner_or_capable
 756 #
 757 AC_DEFUN([LC_HAVE_INODE_OWNER_OR_CAPABLE], [
 758 LB_CHECK_COMPILE([if 'inode_owner_or_capable' exist],
 759 inode_owner_or_capable, [
 760         #include <linux/fs.h>
 761 ],[
 762         inode_owner_or_capable(NULL);
 763 ],[
 764         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
 765                 [inode_owner_or_capable exist])
 766 ])
 767 ]) # LC_HAVE_INODE_OWNER_OR_CAPABLE
 768
 769 #
 770 # LC_DIRTY_INODE_WITH_FLAG
 771 #
 772 # 3.0 dirty_inode() has a flag parameter
 773 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 774 #
 775 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG], [
 776 LB_CHECK_COMPILE([if 'dirty_inode' super_operation takes flag],
 777 dirty_inode_super_operation_flag, [
 778         #include <linux/fs.h>
 779 ],[
 780         struct inode *inode = NULL;
 781         inode->i_sb->s_op->dirty_inode(NULL, 0);
 782 ],[
 783         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 784                 [dirty_inode super_operation takes flag])
 785 ])
 786 ]) # LC_DIRTY_INODE_WITH_FLAG
 787
 788 #
 789 # LC_SETNS
 790 #
 791 # 3.0 introduced setns
 792 #
 793 AC_DEFUN([LC_SETNS], [
 794 AC_CHECK_HEADERS([sched.h], [], [],
 795                  [#define _GNU_SOURCE
 796                  ])
 797 AC_CHECK_FUNCS([setns])
 798 ]) # LC_SETNS
 799
 800 #
 801 # LC_GENERIC_PERMISSION
 802 #
 803 # 2.6.38 generic_permission taken 4 parameters.
 804 # in fact, it means rcu-walk aware permission bring.
 805 #
 806 # 3.1 generic_permission taken 2 parameters.
 807 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 808 #
 809 AC_DEFUN([LC_GENERIC_PERMISSION], [
 810 LB_CHECK_COMPILE([if 'generic_permission' take 2 arguments],
 811 generic_permission_2args, [
 812         #include <linux/fs.h>
 813 ],[
 814         generic_permission(NULL, 0);
 815 ],[
 816         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 817                 [generic_permission taken 2 arguments])
 818 ],[
 819         LB_CHECK_COMPILE([if 'generic_permission' take 4 arguments],
 820         generic_permission_4args, [
 821                 #include <linux/fs.h>
 822         ],[
 823                 generic_permission(NULL, 0, 0, NULL);
 824         ],[
 825                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 826                         [generic_permission taken 4 arguments])
 827         ])
 828 ])
 829 ]) # LC_GENERIC_PERMISSION
 830
 831 #
 832 # LC_LM_XXX_LOCK_MANAGER_OPS
 833 #
 834 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 835 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 836 #
 837 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS], [
 838 LB_CHECK_COMPILE([if 'lock-manager' ops renamed to 'lm_xxx'],
 839 lock_manager_ops_lm_xxx, [
 840         #include <linux/fs.h>
 841 ],[
 842         struct lock_manager_operations lm_ops;
 843         lm_ops.lm_compare_owner = NULL;
 844 ],[
 845         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 846                 [lock-manager ops renamed to lm_xxx])
 847 ])
 848 ]) # LC_LM_XXX_LOCK_MANAGER_OPS
 849
 850 #
 851 # LC_INODE_DIO_WAIT
 852 #
 853 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait
 854 #     instead.
 855 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 856 #
 857 AC_DEFUN([LC_INODE_DIO_WAIT], [
 858 LB_CHECK_COMPILE([if 'inode->i_alloc_sem' is killed and use inode_dio_wait],
 859 inode_dio_wait, [
 860         #include <linux/fs.h>
 861 ],[
 862         inode_dio_wait((struct inode *)0);
 863 ],[
 864         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 865                 [inode->i_alloc_sem is killed and use inode_dio_wait])
 866 ])
 867 ]) # LC_INODE_DIO_WAIT
 868
 869 #
 870 # LC_IOP_GET_ACL
 871 #
 872 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 873 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 874 #
 875 AC_DEFUN([LC_IOP_GET_ACL], [
 876 LB_CHECK_COMPILE([if 'inode_operations' has '.get_acl' member function],
 877 inode_ops_get_acl, [
 878         #include <linux/fs.h>
 879 ],[
 880         struct inode_operations iop;
 881         iop.get_acl = NULL;
 882 ],[
 883         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 884                 [inode_operations has .get_acl member function])
 885 ])
 886 ]) # LC_IOP_GET_ACL
 887
 888 #
 889 # LC_FILE_LLSEEK_SIZE
 890 #
 891 # 3.1 introduced generic_file_llseek_size()
 892 #
 893 AC_DEFUN([LC_FILE_LLSEEK_SIZE], [
 894 LB_CHECK_EXPORT([generic_file_llseek_size], [fs/read_write.c],
 895         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 896                 [generic_file_llseek_size is exported by the kernel])])
 897 ]) # LC_FILE_LLSEEK_SIZE
 898
 899 #
 900 # LC_RADIX_EXCEPTION_ENTRY
 901 # 3.1 adds radix_tree_exception_entry.
 902 #
 903 AC_DEFUN([LC_RADIX_EXCEPTION_ENTRY], [
 904 LB_CHECK_COMPILE([radix_tree_exceptional_entry exist],
 905 radix_tree_exceptional_entry, [
 906         #include <linux/radix-tree.h>
 907 ],[
 908         radix_tree_exceptional_entry(NULL);
 909 ],[
 910         AC_DEFINE(HAVE_RADIX_EXCEPTION_ENTRY, 1,
 911                 [radix_tree_exceptional_entry exist])
 912 ])
 913 ]) # LC_RADIX_EXCEPTION_ENTRY
 914
 915 #
 916 # LC_HAVE_PROTECT_I_NLINK
 917 #
 918 # 3.2 protects inode->i_nlink from direct modification
 919 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 920 # at the same time adds set_nlink(), so checks set_nlink() for it.
 921 #
 922 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK], [
 923 LB_CHECK_COMPILE([if 'inode->i_nlink' is protected from direct modification],
 924 inode_i_nlink_protected, [
 925         #include <linux/fs.h>
 926 ],[
 927         struct inode i;
 928         set_nlink(&i, 1);
 929 ],[
 930         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 931                 [inode->i_nlink is protected from direct modification])
 932 ])
 933 ]) # LC_HAVE_PROTECT_I_NLINK
 934
 935 #
 936 # 2.6.39 security_inode_init_security takes a 'struct qstr' parameter
 937 #
 938 # 3.2 security_inode_init_security takes a callback to set xattrs
 939 #
 940 AC_DEFUN([LC_HAVE_SECURITY_IINITSEC], [
 941 LB_CHECK_COMPILE([if security_inode_init_security takes a callback],
 942 security_inode_init_security_callback, [
 943         #include <linux/security.h>
 944 ],[
 945         security_inode_init_security(NULL, NULL, NULL, (const initxattrs)NULL, NULL);
 946 ],[
 947         AC_DEFINE(HAVE_SECURITY_IINITSEC_CALLBACK, 1,
 948                   [security_inode_init_security takes a callback to set xattrs])
 949 ],[
 950         LB_CHECK_COMPILE([if security_inode_init_security takes a 'struct qstr' parameter],
 951         security_inode_init_security_qstr, [
 952                 #include <linux/security.h>
 953         ],[
 954                 security_inode_init_security(NULL, NULL, (struct qstr *)NULL, NULL, NULL, NULL);
 955         ],[
 956                 AC_DEFINE(HAVE_SECURITY_IINITSEC_QSTR, 1,
 957                           [security_inode_init_security takes a 'struct qstr' parameter])
 958         ])
 959 ])
 960 ]) # LC_HAVE_SECURITY_IINITSEC
 961
 962 #
 963 # LC_HAVE_MIGRATE_HEADER
 964 #
 965 # 3.3 introduces migrate_mode.h and migratepage has 4 args
 966 #
 967 AC_DEFUN([LC_HAVE_MIGRATE_HEADER], [
 968 LB_CHECK_FILE([$LINUX/include/linux/migrate.h], [
 969         AC_DEFINE(HAVE_MIGRATE_H, 1,
 970                 [kernel has include/linux/migrate.h])
 971 ],[
 972         LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h], [
 973                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
 974                         [kernel has include/linux/migrate_mode.h])
 975         ])
 976 ])
 977 ]) # LC_HAVE_MIGRATE_HEADER
 978
 979 #
 980 # LC_MIGRATEPAGE_4ARGS
 981 #
 982 AC_DEFUN([LC_MIGRATEPAGE_4ARGS], [
 983 LB_CHECK_COMPILE([if 'address_space_operations.migratepage' has 4 args],
 984 address_space_ops_migratepage_4args, [
 985         #include <linux/fs.h>
 986 #ifdef HAVE_MIGRATE_H
 987         #include <linux/migrate.h>
 988 #elif defined(HAVE_MIGRATE_MODE_H)
 989         #include <linux/migrate_mode.h>
 990 #endif
 991 ],[
 992         struct address_space_operations aops = { };
 993         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
 994 ],[
 995         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
 996                 [address_space_operations.migratepage has 4 args])
 997 ])
 998 ]) # LC_MIGRATEPAGE_4ARGS
 999
1000 #
1001 # LC_SUPEROPS_USE_DENTRY
1002 #
1003 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1004 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1005 #
1006 AC_DEFUN([LC_SUPEROPS_USE_DENTRY], [
1007 tmp_flags="$EXTRA_KCFLAGS"
1008 EXTRA_KCFLAGS="-Werror"
1009 LB_CHECK_COMPILE([if 'super_operations' use 'dentry' as parameter],
1010 super_ops_dentry, [
1011         #include <linux/fs.h>
1012         int show_options(struct seq_file *seq, struct dentry *root) {
1013                 return 0;
1014         }
1015 ],[
1016         struct super_operations ops;
1017         ops.show_options = show_options;
1018 ],[
1019         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1020                 [super_operations use dentry as parameter])
1021 ])
1022 EXTRA_KCFLAGS="$tmp_flags"
1023 ]) # LC_SUPEROPS_USE_DENTRY
1024
1025 #
1026 # LC_INODEOPS_USE_UMODE_T
1027 #
1028 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1029 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1030 #
1031 AC_DEFUN([LC_INODEOPS_USE_UMODE_T], [
1032 tmp_flags="$EXTRA_KCFLAGS"
1033 EXTRA_KCFLAGS="-Werror"
1034 LB_CHECK_COMPILE([if 'inode_operations' use 'umode_t' as parameter],
1035 inode_ops_umode_t, [
1036         #include <linux/fs.h>
1037         #include <linux/types.h>
1038         int my_mknod(struct inode *dir, struct dentry *dchild,
1039                      umode_t mode, dev_t dev)
1040         {
1041                 return 0;
1042         }
1043 ],[
1044         struct inode_operations ops;
1045         ops.mknod = my_mknod;
1046 ],[
1047         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1048                 [inode_operations use umode_t as parameter])
1049 ])
1050 EXTRA_KCFLAGS="$tmp_flags"
1051 ]) # LC_INODEOPS_USE_UMODE_T
1052
1053 #
1054 # LC_KMAP_ATOMIC_HAS_1ARG
1055 #
1056 # 3.4 kmap_atomic removes second argument
1057 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1058 #
1059 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG], [
1060 LB_CHECK_COMPILE([if 'kmap_atomic' has only 1 argument],
1061 kmap_atomic_1arg, [
1062         #include <linux/highmem.h>
1063 ],[
1064         kmap_atomic(NULL);
1065 ],[
1066         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1067                 [have kmap_atomic has only 1 argument])
1068 ])
1069 ]) # LC_KMAP_ATOMIC_HAS_1ARG
1070
1071 #
1072 # LC_HAVE_D_MAKE_ROOT
1073 #
1074 # 3.4 converts d_alloc_root to d_make_root
1075 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1076 #
1077 AC_DEFUN([LC_HAVE_D_MAKE_ROOT], [
1078 LB_CHECK_COMPILE([if have 'd_make_root'],
1079 d_make_root, [
1080         #include <linux/fs.h>
1081 ],[
1082         d_make_root((struct inode *)NULL);
1083 ],[
1084         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1085                 [have d_make_root])
1086 ])
1087 ]) # LC_HAVE_D_MAKE_ROOT
1088
1089 #
1090 # LC_HAVE_CACHE_REGISTER
1091 #
1092 # 3.4 cache_register/cache_unregister are removed
1093 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1094 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1095 # are defined, but not exported.
1096 # 3.3 cache_register_net/cache_unregister_net are
1097 # exported and replacing cache_register/cache_unregister in 3.4
1098 #
1099 AC_DEFUN([LC_HAVE_CACHE_REGISTER], [
1100 LB_CHECK_COMPILE([if have 'cache_register'],
1101 cache_register, [
1102         #include <linux/sunrpc/cache.h>
1103 ],[
1104         cache_register(NULL);
1105 ],[
1106         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1107                 [have cache_register])
1108 ])
1109 ]) # LC_HAVE_CACHE_REGISTER
1110
1111 #
1112 # LC_HAVE_CLEAR_INODE
1113 #
1114 # 3.5 renames end_writeback() back to clear_inode()...
1115 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1116 #
1117 AC_DEFUN([LC_HAVE_CLEAR_INODE], [
1118 LB_CHECK_COMPILE([if have 'clear_inode'],
1119 clear_inode, [
1120         #include <linux/fs.h>
1121 ],[
1122         clear_inode((struct inode *)NULL);
1123 ],[
1124         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1125                 [have clear_inode])
1126 ])
1127 ]) # LC_HAVE_CLEAR_INODE
1128
1129 #
1130 # LC_HAVE_ENCODE_FH_PARENT
1131 #
1132 # 3.5 encode_fh has parent inode passed in directly
1133 # see kernel commit b0b0382b
1134 #
1135 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT], [
1136 tmp_flags="$EXTRA_KCFLAGS"
1137 EXTRA_KCFLAGS="-Werror"
1138 LB_CHECK_COMPILE([if 'encode_fh' have parent inode as parameter],
1139 encode_fh_parent_inode, [
1140         #include <linux/exportfs.h>
1141         #include <linux/fs.h>
1142         #include <linux/types.h>
1143         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1144         {
1145                 return 0;
1146         }
1147 ],[
1148         struct export_operations exp_op;
1149         exp_op.encode_fh = ll_encode_fh;
1150 ],[
1151         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1152                 [have parent inode as parameter])
1153 ])
1154 EXTRA_KCFLAGS="$tmp_flags"
1155 ]) # LC_HAVE_ENCODE_FH_PARENT
1156
1157 #
1158 # LC_FILE_LLSEEK_SIZE_5ARG
1159 #
1160 # 3.5 has generic_file_llseek_size with 5 args
1161 #
1162 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG], [
1163 LB_CHECK_COMPILE([if Linux kernel has 'generic_file_llseek_size' with 5 args],
1164 generic_file_llseek_size_5args, [
1165         #include <linux/fs.h>
1166 ],[
1167         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1168 ], [
1169         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1170                 [kernel has generic_file_llseek_size with 5 args])
1171 ])
1172 ]) # LC_FILE_LLSEEK_SIZE_5ARG
1173
1174 #
1175 # LC_LLITE_DATA_IS_LIST
1176 #
1177 # 3.6 switch i_dentry/d_alias from list to hlist
1178 #
1179 # In the upstream kernels d_alias first changes
1180 # to a hlist and then in later version, 3.11, gets
1181 # moved to the union d_u. Due to some distros having
1182 # d_alias in the d_u union as a struct list, which
1183 # has never existed upstream stream, we can't test
1184 # if d_alias is a list or hlist directly. If ever
1185 # i_dentry and d_alias even up different combos then
1186 # the build will fail. In that case then we will need
1187 # to separate out the i_dentry and d_alias test below.
1188 #
1189 AC_DEFUN([LC_DATA_FOR_LLITE_IS_LIST], [
1190 tmp_flags="$EXTRA_KCFLAGS"
1191 EXTRA_KCFLAGS="-Werror"
1192 LB_CHECK_COMPILE([if 'i_dentry/d_alias' uses 'list'],
1193 i_dentry_d_alias_list, [
1194         #include <linux/fs.h>
1195 ],[
1196         struct inode inode;
1197         INIT_LIST_HEAD(&inode.i_dentry);
1198 ],[
1199         AC_DEFINE(DATA_FOR_LLITE_IS_LIST, 1,
1200                 [both i_dentry/d_alias uses list])
1201 ])
1202 EXTRA_KCFLAGS="$tmp_flags"
1203 ]) # LC_DATA_FOR_LLITE_IS_LIST
1204
1205 #
1206 # LC_DENTRY_OPEN_USE_PATH
1207 #
1208 # 3.6 dentry_open uses struct path as first argument
1209 # see kernel commit 765927b2
1210 #
1211 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH], [
1212 tmp_flags="$EXTRA_KCFLAGS"
1213 EXTRA_KCFLAGS="-Werror"
1214 LB_CHECK_COMPILE([if 'dentry_open' uses 'struct path' as first argument],
1215 dentry_open_path, [
1216         #include <linux/fs.h>
1217         #include <linux/path.h>
1218 ],[
1219         struct path path;
1220         dentry_open(&path, 0, NULL);
1221 ],[
1222         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1223                 [dentry_open uses struct path as first argument])
1224 ])
1225 EXTRA_KCFLAGS="$tmp_flags"
1226 ]) # LC_DENTRY_OPEN_USE_PATH
1227
1228 #
1229 # LC_HAVE_IOP_ATOMIC_OPEN
1230 #
1231 # 3.6 vfs adds iop->atomic_open
1232 #
1233 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN], [
1234 LB_CHECK_COMPILE([if 'iop' has 'atomic_open'],
1235 inode_ops_atomic_open, [
1236         #include <linux/fs.h>
1237 ],[
1238         struct inode_operations iop;
1239         iop.atomic_open = NULL;
1240 ],[
1241         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1242                 [have iop atomic_open])
1243 ])
1244 ]) # LC_HAVE_IOP_ATOMIC_OPEN
1245
1246 #
1247 # LC_HAVE_SB_START_WRITE
1248 #
1249 # RHEL6 2.6.32, 3.6 or newer support wrapped FS freeze functions
1250 #
1251 AC_DEFUN([LC_HAVE_SB_START_WRITE], [
1252 LB_CHECK_COMPILE([if kernel supports wrapped FS freeze functions],
1253 sb_start_write, [
1254         #include <linux/fs.h>
1255 ],[
1256         sb_start_write(NULL);
1257 ],[
1258         AC_DEFINE(HAVE_SB_START_WRITE, 1,
1259                 [kernel supports wrapped FS freeze functions])
1260 ])
1261 ]) # LC_HAVE_SB_START_WRITE
1262
1263 #
1264 # LC_HAVE_POSIXACL_USER_NS
1265 #
1266 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1267 #
1268 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS], [
1269 LB_CHECK_COMPILE([if 'posix_acl_to_xattr' takes 'struct user_namespace'],
1270 posix_acl_to_xattr_user_namespace, [
1271         #include <linux/fs.h>
1272         #include <linux/posix_acl_xattr.h>
1273 ],[
1274         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1275 ],[
1276         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1277                 [posix_acl_to_xattr takes struct user_namespace])
1278 ])
1279 ]) # LC_HAVE_POSIXACL_USER_NS
1280
1281 #
1282 # LC_HAVE_FILE_F_INODE
1283 #
1284 # 3.8 struct file has new member f_inode
1285 #
1286 AC_DEFUN([LC_HAVE_FILE_F_INODE], [
1287 LB_CHECK_COMPILE([if 'struct file' has member 'f_inode'],
1288 file_f_inode, [
1289         #include <linux/fs.h>
1290 ],[
1291         ((struct file *)0)->f_inode = NULL;
1292 ],[
1293         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1294                 [struct file has member f_inode])
1295 ])
1296 ]) # LC_HAVE_FILE_F_INODE
1297
1298 #
1299 # LC_HAVE_FILE_INODE
1300 #
1301 # 3.8 has introduced inline function file_inode
1302 #
1303 AC_DEFUN([LC_HAVE_FILE_INODE], [
1304 LB_CHECK_COMPILE([if file_inode() exists],
1305 file_inode, [
1306         #include <linux/fs.h>
1307 ],[
1308         file_inode(NULL);
1309 ],[
1310         AC_DEFINE(HAVE_FILE_INODE, 1,
1311                 [file_inode() has been defined])
1312 ])
1313 ]) # LC_HAVE_FILE_INODE
1314
1315 #
1316 # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1317 #
1318 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS], [
1319 LB_CHECK_COMPILE([if 'sunrpc_cache_pipe_upcall' takes 3 args],
1320 sunrpc_cache_pipe_upcall_3args, [
1321         #include <linux/sunrpc/cache.h>
1322 ],[
1323         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1324 ],[
1325         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1326                 [sunrpc_cache_pipe_upcall takes 3 args])
1327 ])
1328 ]) # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1329
1330 #
1331 # LC_HAVE_HLIST_FOR_EACH_3ARG
1332 #
1333 # 3.9 uses hlist_for_each_entry with 3 args
1334 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1335 #
1336 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG], [
1337 LB_CHECK_COMPILE([if 'hlist_for_each_entry' has 3 args],
1338 hlist_for_each_entry_3args, [
1339         #include <linux/list.h>
1340         #include <linux/fs.h>
1341 ],[
1342         struct hlist_head *head = NULL;
1343         struct inode *inode;
1344
1345         hlist_for_each_entry(inode, head, i_hash) {
1346                 continue;
1347         }
1348 ],[
1349         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1,
1350                 [hlist_for_each_entry has 3 args])
1351 ])
1352 ]) # LC_HAVE_HLIST_FOR_EACH_3ARG
1353
1354 #
1355 # LC_HAVE_BIO_END_SECTOR
1356 #
1357 # 3.9 introduces bio_end_sector macro
1358 # f73a1c7d117d07a96d89475066188a2b79e53c48
1359 #
1360 AC_DEFUN([LC_HAVE_BIO_END_SECTOR], [
1361 LB_CHECK_COMPILE([if 'bio_end_sector' is defined],
1362 bio_end_sector, [
1363         #include <linux/bio.h>
1364 ],[
1365         struct bio bio = { };
1366         unsigned long long end;
1367
1368         end = bio_end_sector(&bio);
1369 ],[
1370         AC_DEFINE(HAVE_BIO_END_SECTOR, 1,
1371                   [bio_end_sector is defined])
1372 ])
1373 ]) # LC_HAVE_BIO_END_SECTOR
1374
1375 #
1376 # 3.9 created is_sxid
1377 #
1378 AC_DEFUN([LC_HAVE_IS_SXID], [
1379 LB_CHECK_COMPILE([if 'is_sxid' is defined],
1380 is_sxid, [
1381         #include <linux/fs.h>
1382 ],[
1383         struct inode inode = { };
1384
1385         is_sxid(inode.i_mode);
1386 ],[
1387         AC_DEFINE(HAVE_IS_SXID, 1, [is_sxid is defined])
1388 ])
1389 ]) # LC_HAVE_IS_SXID
1390
1391 #
1392 # LC_HAVE_REMOVE_PROC_SUBTREE
1393 #
1394 # 3.10 introduced remove_proc_subtree
1395 #
1396 AC_DEFUN([LC_HAVE_REMOVE_PROC_SUBTREE], [
1397 LB_CHECK_COMPILE([if 'remove_proc_subtree' is defined],
1398 remove_proc_subtree, [
1399         #include <linux/proc_fs.h>
1400 ],[
1401         remove_proc_subtree(NULL, NULL);
1402 ], [
1403         AC_DEFINE(HAVE_REMOVE_PROC_SUBTREE, 1,
1404                   [remove_proc_subtree is defined])
1405 ])
1406 ]) # LC_HAVE_REMOVE_PROC_SUBTREE
1407
1408 #
1409 # LC_HAVE_PROC_REMOVE
1410 #
1411 # 3.10 introduced proc_remove
1412 #
1413 AC_DEFUN([LC_HAVE_PROC_REMOVE], [
1414 LB_CHECK_COMPILE([if 'proc_remove' is defined],
1415 proc_remove, [
1416         #include <linux/proc_fs.h>
1417 ],[
1418         proc_remove(NULL);
1419 ], [
1420         AC_DEFINE(HAVE_PROC_REMOVE, 1,
1421                   [proc_remove is defined])
1422 ])
1423 ]) # LC_HAVE_PROC_REMOVE
1424
1425 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
1426 LB_CHECK_COMPILE([if get_projid exists],
1427 get_projid, [
1428         struct inode;
1429         #include <linux/quota.h>
1430 ],[
1431         struct dquot_operations ops = { };
1432
1433         ops.get_projid(NULL, NULL);
1434 ],[
1435         AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
1436                 [get_projid function exists])
1437 ])
1438 ]) # LC_HAVE_PROJECT_QUOTA
1439
1440
1441 #
1442 # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1443 #
1444 # 3.10 introduced security_dentry_init_security()
1445 #
1446 AC_DEFUN([LC_HAVE_SECURITY_DENTRY_INIT_SECURITY], [
1447 LB_CHECK_COMPILE([if 'security_dentry_init_security' is defined],
1448 security_dentry_init_security, [
1449         #include <linux/security.h>
1450 ],[
1451         security_dentry_init_security(NULL, 0, NULL, NULL, NULL);
1452 ],[
1453         AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_SECURITY, 1,
1454                 [security_dentry_init_security' is defined])
1455 ])
1456 ]) # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1457
1458 #
1459 # LC_INVALIDATE_RANGE
1460 #
1461 # 3.11 invalidatepage requires the length of the range to invalidate
1462 #
1463 AC_DEFUN([LC_INVALIDATE_RANGE], [
1464 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
1465 address_space_ops_invalidatepage_3args, [
1466         #include <linux/fs.h>
1467 ],[
1468         struct address_space_operations a_ops;
1469         a_ops.invalidatepage(NULL, 0, 0);
1470 ],[
1471         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
1472                 [address_space_operations.invalidatepage needs 3 arguments])
1473 ])
1474 ]) # LC_INVALIDATE_RANGE
1475
1476 #
1477 # LC_HAVE_DIR_CONTEXT
1478 #
1479 # 3.11 readdir now takes the new struct dir_context
1480 #
1481 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
1482 LB_CHECK_COMPILE([if 'dir_context' exist],
1483 dir_context, [
1484         #include <linux/fs.h>
1485 ],[
1486 #ifdef FMODE_KABI_ITERATE
1487 #error "back to use readdir in kabi_extand mode"
1488 #else
1489         struct dir_context ctx;
1490
1491         ctx.pos = 0;
1492 #endif
1493 ],[
1494         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
1495                 [dir_context exist])
1496 ])
1497 ]) # LC_HAVE_DIR_CONTEXT
1498
1499 #
1500 # LC_D_COMPARE_5ARGS
1501 #
1502 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1503 #
1504 AC_DEFUN([LC_D_COMPARE_5ARGS], [
1505 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
1506 d_compare_5args, [
1507         #include <linux/dcache.h>
1508 ],[
1509         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1510 ],[
1511         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1512                 [d_compare need 5 arguments])
1513 ])
1514 ]) # LC_D_COMPARE_5ARGS
1515
1516 #
1517 # LC_HAVE_DCOUNT
1518 #
1519 # 3.11 need to access d_count to get dentry reference count
1520 #
1521 AC_DEFUN([LC_HAVE_DCOUNT], [
1522 LB_CHECK_COMPILE([if 'd_count' exists],
1523 d_count, [
1524         #include <linux/dcache.h>
1525 ],[
1526         struct dentry de = { };
1527         int count;
1528
1529         count = d_count(&de);
1530 ],[
1531         AC_DEFINE(HAVE_D_COUNT, 1,
1532                 [d_count exist])
1533 ])
1534 ]) # LC_HAVE_DCOUNT
1535
1536 #
1537 # LC_PID_NS_FOR_CHILDREN
1538 #
1539 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
1540 #
1541 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
1542 LB_CHECK_COMPILE([if 'struct nsproxy' has 'pid_ns_for_children'],
1543 pid_ns_for_children, [
1544         #include <linux/nsproxy.h>
1545 ],[
1546         struct nsproxy ns;
1547         ns.pid_ns_for_children = NULL;
1548 ],[
1549         AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
1550                   ['struct nsproxy' has 'pid_ns_for_children'])
1551 ])
1552 ]) # LC_PID_NS_FOR_CHILDREN
1553
1554 #
1555 # LC_OLDSIZE_TRUNCATE_PAGECACHE
1556 #
1557 # 3.12 truncate_pagecache without oldsize parameter
1558 #
1559 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
1560 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
1561 truncate_pagecache_old_size, [
1562         #include <linux/mm.h>
1563 ],[
1564         truncate_pagecache(NULL, 0, 0);
1565 ],[
1566         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
1567                 [with oldsize])
1568 ])
1569 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
1570
1571 #
1572 # LC_PTR_ERR_OR_ZERO
1573 #
1574 # For some reason SLES11SP4 is missing the PTR_ERR_OR_ZERO macro
1575 # It was added to linux kernel 3.12
1576 #
1577 AC_DEFUN([LC_PTR_ERR_OR_ZERO_MISSING], [
1578 LB_CHECK_COMPILE([if 'PTR_ERR_OR_ZERO' is missing],
1579 is_err_or_null, [
1580         #include <linux/err.h>
1581 ],[
1582         if (PTR_ERR_OR_ZERO(NULL)) return 0;
1583 ],[
1584         AC_DEFINE(HAVE_PTR_ERR_OR_ZERO, 1,
1585                 ['PTR_ERR_OR_ZERO' exist])
1586 ])
1587 ]) # LC_PTR_ERR_OR_ZERO_MISSING
1588
1589 #
1590 # LC_HAVE_DENTRY_D_U_D_ALIAS
1591 #
1592 # 3.11 kernel moved d_alias to the union d_u in struct dentry
1593 #
1594 # Some distros move d_alias to d_u but it is still a struct list
1595 #
1596 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
1597 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
1598         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
1599         d_alias, [
1600                 #include <linux/list.h>
1601                 #include <linux/dcache.h>
1602         ],[
1603                 struct dentry de;
1604                 INIT_LIST_HEAD(&de.d_u.d_alias);
1605         ],[
1606                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1607                         [list dentry.d_u.d_alias exist])
1608         ])
1609 ],[
1610         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
1611         d_alias, [
1612                 #include <linux/list.h>
1613                 #include <linux/dcache.h>
1614         ],[
1615                 struct dentry de;
1616                 INIT_HLIST_NODE(&de.d_u.d_alias);
1617         ],[
1618                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1619                         [hlist dentry.d_u.d_alias exist])
1620         ])
1621 ])
1622 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
1623
1624 #
1625 # LC_HAVE_DENTRY_D_CHILD
1626 #
1627 # 3.11 kernel d_child has been moved out of the union d_u
1628 # in struct dentry
1629 #
1630 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
1631 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
1632 d_child, [
1633         #include <linux/list.h>
1634         #include <linux/dcache.h>
1635 ],[
1636         struct dentry de;
1637         INIT_LIST_HEAD(&de.d_child);
1638 ],[
1639         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
1640                 [dentry.d_child exist])
1641 ])
1642 ]) # LC_HAVE_DENTRY_D_CHILD
1643
1644 #
1645 # LC_KIOCB_KI_LEFT
1646 #
1647 # 3.12 ki_left removed from struct kiocb
1648 #
1649 AC_DEFUN([LC_KIOCB_KI_LEFT], [
1650 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
1651 kiocb_ki_left, [
1652         #include <linux/aio.h>
1653 ],[
1654         ((struct kiocb*)0)->ki_left = 0;
1655 ],[
1656         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
1657                 [ki_left exist])
1658 ])
1659 ]) # LC_KIOCB_KI_LEFT
1660
1661 #
1662 # LC_INIT_LIST_HEAD_RCU
1663 #
1664 # 3.12 added INIT_LIST_HEAD_RCU in commit 2a855b644c310d5db5
1665 # which is unfortunately an inline function and not a macro
1666 # that can be tested directly, so it needs a configure check.
1667 #
1668 AC_DEFUN([LC_INIT_LIST_HEAD_RCU], [
1669 LB_CHECK_COMPILE([if 'INIT_LIST_HEAD_RCU' exists],
1670 init_list_head_rcu, [
1671         #include <linux/list.h>
1672         #include <linux/rculist.h>
1673 ],[
1674         struct list_head list;
1675         INIT_LIST_HEAD_RCU(&list);
1676 ],[
1677         AC_DEFINE(HAVE_INIT_LIST_HEAD_RCU, 1,
1678                   [INIT_LIST_HEAD_RCU exists])
1679 ])
1680 ]) # LC_INIT_LIST_HEAD_RCU
1681
1682 #
1683 # LC_VFS_RENAME_5ARGS
1684 #
1685 # 3.13 has vfs_rename with 5 args
1686 #
1687 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
1688 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
1689 vfs_rename_5args, [
1690         #include <linux/fs.h>
1691 ],[
1692         vfs_rename(NULL, NULL, NULL, NULL, NULL);
1693 ], [
1694         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
1695                 [kernel has vfs_rename with 5 args])
1696 ])
1697 ]) # LC_VFS_RENAME_5ARGS
1698
1699 #
1700 # LC_VFS_UNLINK_3ARGS
1701 #
1702 # 3.13 has vfs_unlink with 3 args
1703 #
1704 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
1705 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
1706 vfs_unlink_3args, [
1707         #include <linux/fs.h>
1708 ],[
1709         vfs_unlink(NULL, NULL, NULL);
1710 ], [
1711         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
1712                 [kernel has vfs_unlink with 3 args])
1713 ])
1714 ]) # LC_VFS_UNLINK_3ARGS
1715
1716 #
1717 # LC_HAVE_BVEC_ITER
1718 #
1719 # 3.14 move some of its data in struct bio into the new
1720 # struct bvec_iter
1721 #
1722 AC_DEFUN([LC_HAVE_BVEC_ITER], [
1723 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
1724 have_bvec_iter, [
1725         #include <linux/bio.h>
1726 ],[
1727         struct bvec_iter iter;
1728
1729         iter.bi_bvec_done = 0;
1730 ], [
1731         AC_DEFINE(HAVE_BVEC_ITER, 1,
1732                 [kernel has struct bvec_iter])
1733 ])
1734 ]) # LC_HAVE_BVEC_ITER
1735
1736 #
1737 # LC_IOP_SET_ACL
1738 #
1739 # 3.14 adds set_acl method to inode_operations
1740 # see kernel commit 893d46e443346370cd4ea81d9d35f72952c62a37
1741 #
1742 AC_DEFUN([LC_IOP_SET_ACL], [
1743 LB_CHECK_COMPILE([if 'inode_operations' has '.set_acl' member function],
1744 inode_ops_set_acl, [
1745         #include <linux/fs.h>
1746 ],[
1747         struct inode_operations iop;
1748         iop.set_acl = NULL;
1749 ],[
1750         AC_DEFINE(HAVE_IOP_SET_ACL, 1,
1751                 [inode_operations has .set_acl member function])
1752 ])
1753 ]) # LC_IOP_SET_ACL
1754
1755 #
1756 # LC_HAVE_TRUNCATE_IPAGE_FINAL
1757 #
1758 # 3.14 bring truncate_inode_pages_final for evict_inode
1759 #
1760 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
1761 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
1762 truncate_ipages_final, [
1763         #include <linux/mm.h>
1764 ],[
1765         truncate_inode_pages_final(NULL);
1766 ], [
1767         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
1768                 [kernel has truncate_inode_pages_final])
1769 ])
1770 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
1771
1772 #
1773 # LC_IOPS_RENAME_WITH_FLAGS
1774 #
1775 # 3.14 has inode_operations->rename with 5 args
1776 # commit 520c8b16505236fc82daa352e6c5e73cd9870cff
1777 #
1778 AC_DEFUN([LC_IOPS_RENAME_WITH_FLAGS], [
1779 LB_CHECK_COMPILE([if 'inode_operations->rename' taken flags as argument],
1780 iops_rename_with_flags, [
1781         #include <linux/fs.h>
1782 ],[
1783         struct inode *i1 = NULL, *i2 = NULL;
1784         struct dentry *d1 = NULL, *d2 = NULL;
1785         int rc;
1786         rc = ((struct inode_operations *)0)->rename(i1, d1, i2, d2, 0);
1787 ], [
1788         AC_DEFINE(HAVE_IOPS_RENAME_WITH_FLAGS, 1,
1789                 [inode_operations->rename need flags as argument])
1790 ])
1791 ]) # LC_IOPS_RENAME_WITH_FLAGS
1792
1793 #
1794 # LC_VFS_RENAME_6ARGS
1795 #
1796 # 3.15 has vfs_rename with 6 args
1797 #
1798 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
1799 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
1800 vfs_rename_6args, [
1801         #include <linux/fs.h>
1802 ],[
1803         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
1804 ], [
1805         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
1806                 [kernel has vfs_rename with 6 args])
1807 ])
1808 ]) # LC_VFS_RENAME_6ARGS
1809
1810 #
1811 # LC_DIRECTIO_USE_ITER
1812 #
1813 # 3.16 kernel changes direct IO to use iov_iter
1814 #
1815 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
1816 LB_CHECK_COMPILE([if direct IO uses iov_iter],
1817 direct_io_iter, [
1818         #include <linux/fs.h>
1819 ],[
1820         struct address_space_operations ops = { };
1821         struct iov_iter *iter = NULL;
1822         loff_t offset = 0;
1823
1824         ops.direct_IO(0, NULL, iter, offset);
1825 ],[
1826         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
1827                 [direct IO uses iov_iter])
1828 ])
1829 ]) # LC_DIRECTIO_USE_ITER
1830
1831 #
1832 # LC_HAVE_IOV_ITER_INIT_DIRECTION
1833 #
1834 #
1835 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
1836 #      changed iov_iter_init api to start accepting a tag
1837 #      that defines if its a read or write operation
1838 #
1839 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
1840 tmp_flags="$EXTRA_KCFLAGS"
1841 EXTRA_KCFLAGS="-Werror"
1842 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
1843 iter_init, [
1844         #include <linux/uio.h>
1845         #include <linux/fs.h>
1846 ],[
1847         const struct iovec *iov = NULL;
1848
1849         iov_iter_init(NULL, READ, iov, 1, 0);
1850 ],[
1851         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
1852                 [iov_iter_init handles directional tag])
1853 ])
1854 EXTRA_KCFLAGS="$tmp_flags"
1855 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
1856
1857 #
1858 # LC_HAVE_IOV_ITER_TRUNCATE
1859 #
1860 #
1861 # 3.16 introduces a new API iov_iter_truncate()
1862 #
1863 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
1864 tmp_flags="$EXTRA_KCFLAGS"
1865 EXTRA_KCFLAGS="-Werror"
1866 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
1867 iter_truncate, [
1868         #include <linux/uio.h>
1869         #include <linux/fs.h>
1870 ],[
1871         struct iov_iter *i = NULL;
1872
1873         iov_iter_truncate(i, 0);
1874 ],[
1875         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
1876 ])
1877 EXTRA_KCFLAGS="$tmp_flags"
1878 ]) # LC_HAVE_IOV_ITER_TRUNCATE
1879
1880 #
1881 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1882 #
1883 # 3.16 introduces [read|write]_iter to struct file_operations
1884 #
1885 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1886 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
1887 file_function_iter, [
1888         #include <linux/fs.h>
1889 ],[
1890         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
1891         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
1892 ],[
1893         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
1894                 [file_operations.[read|write]_iter functions exist])
1895 ])
1896 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1897
1898 #
1899 # LC_HAVE_INTERVAL_BLK_INTEGRITY
1900 #
1901 # 3.17 replace sector_size with interval in struct blk_integrity
1902 #
1903 AC_DEFUN([LC_HAVE_INTERVAL_BLK_INTEGRITY], [
1904 LB_CHECK_COMPILE([if 'blk_integrity.interval' exist],
1905 interval_blk_integrity, [
1906         #include <linux/blkdev.h>
1907 ],[
1908         ((struct blk_integrity *)0)->interval = 0;
1909 ],[
1910         AC_DEFINE(HAVE_INTERVAL_BLK_INTEGRITY, 1,
1911                 [blk_integrity.interval exist])
1912 ])
1913 ]) # LC_HAVE_INTERVAL_BLK_INTEGRITY
1914
1915 #
1916 # LC_KEY_MATCH_DATA
1917 #
1918 # 3.17  replaces key_type::match with match_preparse
1919 #       and has new struct key_match_data
1920 #
1921 AC_DEFUN([LC_KEY_MATCH_DATA], [
1922 LB_CHECK_COMPILE([if struct key_match field exist],
1923 key_match, [
1924         #include <linux/key-type.h>
1925 ],[
1926         struct key_match_data data;
1927
1928         data.raw_data = NULL;
1929 ],[
1930         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
1931                 [struct key_match_data exist])
1932 ])
1933 ]) # LC_KEY_MATCH_DATA
1934
1935 #
1936 # LC_NFS_FILLDIR_USE_CTX
1937 #
1938 # 3.18 kernel moved from void cookie to struct dir_context
1939 #
1940 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
1941 tmp_flags="$EXTRA_KCFLAGS"
1942 EXTRA_KCFLAGS="-Werror"
1943 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
1944 filldir_ctx, [
1945         #include <linux/fs.h>
1946 ],[
1947         int filldir(struct dir_context *ctx, const char* name,
1948                     int i, loff_t off, u64 tmp, unsigned temp)
1949         {
1950                 return 0;
1951         }
1952
1953         struct dir_context ctx = {
1954                 .actor = filldir,
1955         };
1956
1957         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
1958 ],[
1959         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
1960                 [filldir_t needs struct dir_context as argument])
1961 ])
1962 EXTRA_KCFLAGS="$tmp_flags"
1963 ]) # LC_NFS_FILLDIR_USE_CTX
1964
1965 #
1966 # LC_PERCPU_COUNTER_INIT
1967 #
1968 # 3.18  For kernels 3.18 and after percpu_counter_init starts
1969 #       to pass a GFP_* memory allocation flag for internal
1970 #       memory allocation purposes.
1971 #
1972 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
1973 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
1974 percpu_counter_init, [
1975         #include <linux/percpu_counter.h>
1976 ],[
1977         percpu_counter_init(NULL, 0, GFP_KERNEL);
1978 ],[
1979         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
1980                 [percpu_counter_init uses GFP_* flag])
1981 ])
1982 ]) # LC_PERCPU_COUNTER_INIT
1983
1984 #
1985 # LC_KIOCB_HAS_NBYTES
1986 #
1987 # 3.19 kernel removed ki_nbytes from struct kiocb
1988 #
1989 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
1990 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
1991 ki_nbytes, [
1992         #include <linux/fs.h>
1993 ],[
1994         struct kiocb iocb = { };
1995
1996         iocb.ki_nbytes = 0;
1997 ],[
1998         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
1999 ])
2000 ]) # LC_KIOCB_HAS_NBYTES
2001
2002 #
2003 # LC_HAVE_DQUOT_QC_DQBLK
2004 #
2005 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
2006 # Added in commit 14bf61ffe
2007 #
2008 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
2009 tmp_flags="$EXTRA_KCFLAGS"
2010 EXTRA_KCFLAGS="-Werror"
2011 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk],
2012 qc_dqblk, [
2013         #include <linux/fs.h>
2014         #include <linux/quota.h>
2015 ],[
2016         ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
2017 ],[
2018         AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
2019                 [quotactl_ops.set_dqblk takes struct qc_dqblk])
2020         AC_DEFINE(HAVE_DQUOT_KQID, 1,
2021                 [quotactl_ops.set_dqblk takes struct kqid])
2022 ])
2023 EXTRA_KCFLAGS="$tmp_flags"
2024 ]) # LC_HAVE_DQUOT_QC_DQBLK
2025
2026 #
2027 # LC_BACKING_DEV_INFO_REMOVAL
2028 #
2029 # 3.20 kernel removed backing_dev_info from address_space
2030 #
2031 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
2032 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
2033 backing_dev_info, [
2034         #include <linux/fs.h>
2035 ],[
2036         struct address_space mapping;
2037
2038         mapping.backing_dev_info = NULL;
2039 ],[
2040         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
2041 ])
2042 ]) # LC_BACKING_DEV_INFO_REMOVAL
2043
2044 #
2045 # LC_HAVE_BDI_CAP_MAP_COPY
2046 #
2047 # 3.20  removed mmap handling for backing devices since
2048 #       it breaks on non-MMU systems. See kernel commit
2049 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
2050 #
2051 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
2052 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
2053 bdi_cap_map_copy, [
2054         #include <linux/backing-dev.h>
2055 ],[
2056         struct backing_dev_info info;
2057
2058         info.capabilities = BDI_CAP_MAP_COPY;
2059 ],[
2060         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
2061                 [BDI_CAP_MAP_COPY exist])
2062 ])
2063 ]) # LC_HAVE_BDI_CAP_MAP_COPY
2064
2065 #
2066 # LC_CANCEL_DIRTY_PAGE
2067 #
2068 # 4.0.0 kernel removed cancel_dirty_page
2069 #
2070 AC_DEFUN([LC_CANCEL_DIRTY_PAGE], [
2071 LB_CHECK_COMPILE([if cancel_dirty_page still exist],
2072 cancel_dirty_page, [
2073         #include <linux/mm.h>
2074 ],[
2075         cancel_dirty_page(NULL, PAGE_SIZE);
2076 ],[
2077         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
2078                 [cancel_dirty_page is still available])
2079 ])
2080 ]) # LC_CANCEL_DIRTY_PAGE
2081
2082 #
2083 # LC_IOV_ITER_RW
2084 #
2085 # 4.1 kernel has iov_iter_rw
2086 #
2087 AC_DEFUN([LC_IOV_ITER_RW], [
2088 LB_CHECK_COMPILE([if iov_iter_rw exist],
2089 iov_iter_rw, [
2090         #include <linux/fs.h>
2091         #include <linux/uio.h>
2092 ],[
2093         struct iov_iter *iter = NULL;
2094
2095         iov_iter_rw(iter);
2096 ],[
2097         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
2098                 [iov_iter_rw exist])
2099 ])
2100 ]) # LC_IOV_ITER_RW
2101
2102 #
2103 # LC_HAVE_SYNC_READ_WRITE
2104 #
2105 # 4.1 new_sync_[read|write] no longer exported
2106 #
2107 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
2108 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
2109         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
2110                         [new_sync_[read|write] is exported by the kernel])])
2111 ]) # LC_HAVE_SYNC_READ_WRITE
2112
2113 #
2114 # LC_HAVE___BI_CNT
2115 #
2116 # 4.1 redefined bi_cnt as __bi_cnt in commit dac56212e8127dbc0
2117 #
2118 AC_DEFUN([LC_HAVE___BI_CNT], [
2119 LB_CHECK_COMPILE([if Linux kernel has __bi_cnt in struct bio],
2120 have___bi_cnt, [
2121         #include <asm/atomic.h>
2122         #include <linux/bio.h>
2123         #include <linux/blk_types.h>
2124 ],[
2125         struct bio bio = { };
2126         int cnt;
2127         cnt = atomic_read(&bio.__bi_cnt);
2128 ], [
2129         AC_DEFINE(HAVE___BI_CNT, 1,
2130                 [struct bio has __bi_cnt])
2131 ])
2132 ]) # LC_HAVE___BI_CNT
2133
2134 #
2135 # LC_NEW_CANCEL_DIRTY_PAGE
2136 #
2137 # 4.2 kernel has new cancel_dirty_page
2138 #
2139 AC_DEFUN([LC_NEW_CANCEL_DIRTY_PAGE], [
2140 LB_CHECK_COMPILE([if cancel_dirty_page with one argument exist],
2141 new_cancel_dirty_page, [
2142         #include <linux/mm.h>
2143 ],[
2144         cancel_dirty_page(NULL);
2145 ],[
2146         AC_DEFINE(HAVE_NEW_CANCEL_DIRTY_PAGE, 1,
2147                 [cancel_dirty_page with one arguement is available])
2148 ])
2149 ]) # LC_NEW_CANCEL_DIRTY_PAGE
2150
2151 #
2152 # LC_SYMLINK_OPS_USE_NAMEIDATA
2153 #
2154 # For the 4.2+ kernels the file system internal symlink api no
2155 # longer uses struct nameidata as a argument
2156 #
2157 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
2158 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
2159 symlink_use_nameidata, [
2160         #include <linux/namei.h>
2161         #include <linux/fs.h>
2162 ],[
2163         struct nameidata *nd = NULL;
2164
2165         ((struct inode_operations *)0)->follow_link(NULL, nd);
2166         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
2167 ],[
2168         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
2169                 [symlink inode operations need struct nameidata argument])
2170 ])
2171 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
2172
2173 #
2174 # LC_BIO_ENDIO_USES_ONE_ARG
2175 #
2176 # 4.2 kernel bio_endio now only takes one argument
2177 #
2178 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
2179 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
2180 bio_endio, [
2181         #include <linux/bio.h>
2182 ],[
2183         bio_endio(NULL);
2184 ],[
2185         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
2186                 [bio_endio takes only one argument])
2187 ])
2188 ]) # LC_BIO_ENDIO_USES_ONE_ARG
2189
2190 #
2191 # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
2192 #
2193 # 4.3 replace interval with interval_exp in 'struct blk_integrity'
2194 # 'struct blk_integrity_profile' is also added in this version,
2195 # thus use this to determine whether 'struct blk_integrity' has profile
2196 #
2197 AC_DEFUN([LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY], [
2198 LB_CHECK_COMPILE([if 'blk_integrity.interval_exp' exist],
2199 blk_integrity_interval_exp, [
2200         #include <linux/blkdev.h>
2201 ],[
2202         ((struct blk_integrity *)0)->interval_exp = 0;
2203 ],[
2204         AC_DEFINE(HAVE_INTERVAL_EXP_BLK_INTEGRITY, 1,
2205                 [blk_integrity.interval_exp exist])
2206 ])
2207 ]) # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
2208
2209 #
2210 # LC_HAVE_LOOP_CTL_GET_FREE
2211 #
2212 # 4.x kernel have moved userspace APIs to
2213 # the separate directory and all of them
2214 # support LOOP_CTL_GET_FREE
2215 #
2216 AC_DEFUN([LC_HAVE_LOOP_CTL_GET_FREE], [
2217 LB_CHECK_FILE([$LINUX/include/linux/loop.h], [
2218         LB_CHECK_COMPILE([if have 'HAVE_LOOP_CTL_GET_FREE'],
2219         LOOP_CTL_GET_FREE, [
2220                 #include <linux/loop.h>
2221         ],[
2222                 int i;
2223
2224                 i = LOOP_CTL_GET_FREE;
2225         ],[
2226                 AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2227                         [LOOP_CTL_GET_FREE exist])
2228         ])
2229 ],[
2230         AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2231                 [kernel has LOOP_CTL_GET_FREE])
2232 ])
2233 ]) # LC_HAVE_LOOP_CTL_GET_FREE
2234
2235 #
2236 # LC_HAVE_CACHE_HEAD_HLIST
2237 #
2238 # 4.3 kernel swiched to hlist for cache_head
2239 #
2240 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
2241 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
2242 cache_head_has_hlist, [
2243         #include <linux/sunrpc/cache.h>
2244 ],[
2245         do {} while(sizeof(((struct cache_head *)0)->cache_list));
2246 ],[
2247         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
2248                 [cache_head has hlist cache_list])
2249 ])
2250 ]) # LC_HAVE_CACHE_HEAD_HLIST
2251
2252 #
2253 # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2254 #
2255 # Kernel version 4.3 commit e409de992e3ea3674393465f07cc71c948edd87a
2256 # simplified xattr_handler handling by passing in the handler pointer
2257 #
2258 AC_DEFUN([LC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
2259 tmp_flags="$EXTRA_KCFLAGS"
2260 EXTRA_KCFLAGS="-Werror"
2261 LB_CHECK_COMPILE([if 'struct xattr_handler' functions pass in handler pointer],
2262 xattr_handler_simplified, [
2263         #include <linux/xattr.h>
2264 ],[
2265         struct xattr_handler handler;
2266
2267         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, 0);
2268         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, 0, 0);
2269 ],[
2270         AC_DEFINE(HAVE_XATTR_HANDLER_SIMPLIFIED, 1, [handler pointer is parameter])
2271 ])
2272 EXTRA_KCFLAGS="$tmp_flags"
2273 ]) # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2274
2275 #
2276 # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
2277 #
2278 # 4.3 replace interval with interval_exp in 'struct blk_integrity'.
2279 #
2280 AC_DEFUN([LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD], [
2281 LB_CHECK_COMPILE([if 'bio_integrity_payload.bip_iter' exist],
2282 bio_integrity_payload_bip_iter, [
2283         #include <linux/bio.h>
2284 ],[
2285         ((struct bio_integrity_payload *)0)->bip_iter.bi_size = 0;
2286 ],[
2287         AC_DEFINE(HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD, 1,
2288                 [bio_integrity_payload.bip_iter exist])
2289 ])
2290 ]) # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
2291
2292 #
2293 # LC_BIO_INTEGRITY_PREP_FN
2294 #
2295 # Lustre kernel patch extents bio_integrity_prep to accept optional
2296 # generate/verify_fn as extra args.
2297 #
2298 AC_DEFUN([LC_BIO_INTEGRITY_PREP_FN], [
2299 LB_CHECK_COMPILE([if 'bio_integrity_prep_fn' exists],
2300 bio_integrity_prep_fn, [
2301         #include <linux/bio.h>
2302 ],[
2303         bio_integrity_prep_fn(NULL, NULL, NULL);
2304 ],[
2305         AC_DEFINE(HAVE_BIO_INTEGRITY_PREP_FN, 1,
2306                 [kernel has bio_integrity_prep_fn])
2307         AC_SUBST(PATCHED_INTEGRITY_INTF)
2308 ],[
2309         AC_SUBST(PATCHED_INTEGRITY_INTF, [#])
2310 ])
2311 ]) # LC_BIO_INTEGRITY_PREP_FN
2312
2313 #
2314 # LC_HAVE_BI_OPF
2315 #
2316 # 4.4/4.8 redefined bi_rw as bi_opf (SLES12/kernel commit 4382e33ad37486)
2317 #
2318 AC_DEFUN([LC_HAVE_BI_OPF], [
2319 LB_CHECK_COMPILE([if Linux kernel has bi_opf in struct bio],
2320 have_bi_opf, [
2321         #include <linux/bio.h>
2322 ],[
2323         struct bio bio;
2324
2325         bio.bi_opf = 0;
2326 ], [
2327         AC_DEFINE(HAVE_BI_OPF, 1,
2328                 [struct bio has bi_opf])
2329 ])
2330 ]) # LC_HAVE_BI_OPF
2331
2332 #
2333 # LC_HAVE_SUBMIT_BIO_2ARGS
2334 #
2335 # 4.4 removed an argument from submit_bio
2336 #
2337 AC_DEFUN([LC_HAVE_SUBMIT_BIO_2ARGS], [
2338 LB_CHECK_COMPILE([if submit_bio takes two arguments],
2339 have_submit_bio_2args, [
2340         #include <linux/bio.h>
2341 ],[
2342         struct bio bio;
2343         submit_bio(READ, &bio);
2344 ], [
2345         AC_DEFINE(HAVE_SUBMIT_BIO_2ARGS, 1,
2346                 [submit_bio takes two arguments])
2347 ])
2348 ]) # LC_HAVE_SUBMIT_BIO_2_ARGS
2349
2350 #
2351 # LC_HAVE_CLEAN_BDEV_ALIASES
2352 #
2353 # 4.4/4.9 unmap_underlying_metadata was replaced by clean_bdev_aliases
2354 # (SLES12/kernel commit 29f3ad7d8380364c)
2355 #
2356 AC_DEFUN([LC_HAVE_CLEAN_BDEV_ALIASES], [
2357 LB_CHECK_COMPILE([if kernel has clean_bdev_aliases],
2358 have_clean_bdev_aliases, [
2359         #include <linux/buffer_head.h>
2360 ],[
2361         struct block_device bdev;
2362         clean_bdev_aliases(&bdev,1,1);
2363 ], [
2364         AC_DEFINE(HAVE_CLEAN_BDEV_ALIASES, 1,
2365                 [kernel has clean_bdev_aliases])
2366 ])
2367 ]) # LC_HAVE_CLEAN_BDEV_ALIASES
2368
2369 #
2370 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2371 #
2372 # 4.4 kernel have moved locks API users to
2373 # locks_lock_inode_wait()
2374 #
2375 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
2376 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
2377 locks_lock_file_wait, [
2378         #include <linux/fs.h>
2379 ],[
2380         locks_lock_file_wait(NULL, NULL);
2381 ],[
2382         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
2383                 [kernel has locks_lock_file_wait])
2384 ])
2385 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2386
2387 #
2388 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2389 #
2390 # 4.4 kernel merged type-specific data with the payload data for keys
2391 #
2392 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
2393 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
2394 key_payload_data_array, [
2395         #include <linux/key.h>
2396 ],[
2397         struct key key = { };
2398
2399         key.payload.data[0] = NULL;
2400 ],[
2401         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
2402 ])
2403 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2404
2405 #
2406 # LC_HAVE_XATTR_HANDLER_NAME
2407 #
2408 # Kernel version 4.4 commit 98e9cb5711c68223f0e4d5201b9a6add255ec550
2409 # add a name member to struct xattr_handler
2410 #
2411 AC_DEFUN([LC_HAVE_XATTR_HANDLER_NAME], [
2412 tmp_flags="$EXTRA_KCFLAGS"
2413 EXTRA_KCFLAGS="-Werror"
2414 LB_CHECK_COMPILE([if 'struct xattr_handler' has a name member],
2415 xattr_handler_name, [
2416         #include <linux/xattr.h>
2417 ],[
2418         ((struct xattr_handler *)NULL)->name = NULL;
2419 ],[
2420         AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1, [xattr_handler has a name member])
2421 ])
2422 EXTRA_KCFLAGS="$tmp_flags"
2423 ]) # LC_HAVE_XATTR_HANDLER_NAME
2424
2425 #
2426 # LC_HAVE_FILE_DENTRY
2427 #
2428 # 4.5 adds wrapper file_dentry
2429 #
2430 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
2431 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
2432 file_dentry, [
2433         #include <linux/fs.h>
2434 ],[
2435         file_dentry(NULL);
2436 ], [
2437         AC_DEFINE(HAVE_FILE_DENTRY, 1,
2438                 [kernel has file_dentry])
2439 ])
2440 ]) # LC_HAVE_FILE_DENTRY
2441
2442 #
2443 # LC_HAVE_INODE_LOCK
2444 #
2445 # 4.5 introduced inode_lock
2446 #
2447 AC_DEFUN([LC_HAVE_INODE_LOCK], [
2448 LB_CHECK_COMPILE([if 'inode_lock' is defined],
2449 inode_lock, [
2450         #include <linux/fs.h>
2451 ],[
2452         inode_lock(NULL);
2453 ], [
2454         AC_DEFINE(HAVE_INODE_LOCK, 1,
2455                   [inode_lock is defined])
2456 ])
2457 ]) # LC_HAVE_INODE_LOCK
2458
2459 #
2460 # LC_HAVE_IOP_GET_LINK
2461 #
2462 # 4.5 vfs replaced iop->follow_link with
2463 # iop->get_link
2464 #
2465 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
2466 LB_CHECK_COMPILE([if 'iop' has 'get_link'],
2467 inode_ops_get_link, [
2468         #include <linux/fs.h>
2469 ],[
2470         struct inode_operations iop;
2471         iop.get_link = NULL;
2472 ],[
2473         AC_DEFINE(HAVE_IOP_GET_LINK, 1,
2474                 [have iop get_link])
2475 ])
2476 ]) # LC_HAVE_IOP_GET_LINK
2477
2478 #
2479 # LC_HAVE_IN_COMPAT_SYSCALL
2480 #
2481 # 4.6 renamed is_compat_task to in_compat_syscall
2482 #
2483 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
2484 LB_CHECK_COMPILE([if 'in_compat_syscall' is defined],
2485 in_compat_syscall, [
2486         #include <linux/compat.h>
2487 ],[
2488         in_compat_syscall();
2489 ],[
2490         AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1,
2491                 [have in_compat_syscall])
2492 ])
2493 ]) # LC_HAVE_IN_COMPAT_SYSCALL
2494
2495 #
2496 # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2497 #
2498 # Kernel version 4.6 commit b296821a7c42fa58baa17513b2b7b30ae66f3336
2499 # and commit 5930122683dff58f0846b0f0405b4bd598a3ba6a added inode parameter
2500 # to xattr_handler functions
2501 #
2502 AC_DEFUN([LC_HAVE_XATTR_HANDLER_INODE_PARAM], [
2503 tmp_flags="$EXTRA_KCFLAGS"
2504 EXTRA_KCFLAGS="-Werror"
2505 LB_CHECK_COMPILE([if 'struct xattr_handler' functions have inode parameter],
2506 xattr_handler_inode_param, [
2507         #include <linux/xattr.h>
2508 ],[
2509         const struct xattr_handler handler;
2510
2511         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, NULL, 0);
2512         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, NULL, 0, 0);
2513 ],[
2514         AC_DEFINE(HAVE_XATTR_HANDLER_INODE_PARAM, 1, [needs inode parameter])
2515 ])
2516 EXTRA_KCFLAGS="$tmp_flags"
2517 ]) # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2518
2519 #
2520 # LC_D_IN_LOOKUP
2521 #
2522 # Kernel version 4.6 commit 85c7f81041d57cfe9dc97f4680d5586b54534a39
2523 # introduced parallel lookups in the VFS layer. The inline function
2524 # d_in_lookup was added to notify when the same item was being queried
2525 # at the same time.
2526 #
2527 AC_DEFUN([LC_D_IN_LOOKUP], [
2528 tmp_flags="$EXTRA_KCFLAGS"
2529 EXTRA_KCFLAGS="-Werror"
2530 LB_CHECK_COMPILE([if 'd_in_lookup' is defined],
2531 d_in_lookup, [
2532         #include <linux/dcache.h>
2533 ],[
2534         d_in_lookup(NULL);
2535 ],[
2536         AC_DEFINE(HAVE_D_IN_LOOKUP, 1, [d_in_lookup is defined])
2537 ])
2538 EXTRA_KCFLAGS="$tmp_flags"
2539 ]) # LC_D_IN_LOOKUP
2540
2541 #
2542 # LC_DIRECTIO_2ARGS
2543 #
2544 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2545 # direct-io: eliminate the offset argument to ->direct_IO
2546 #
2547 AC_DEFUN([LC_DIRECTIO_2ARGS], [
2548 LB_CHECK_COMPILE([if '->direct_IO()' taken 2 arguments],
2549 direct_io_2args, [
2550         #include <linux/fs.h>
2551 ],[
2552         struct address_space_operations ops = { };
2553         struct iov_iter *iter = NULL;
2554         struct kiocb *iocb = NULL;
2555         int rc;
2556
2557         rc = ops.direct_IO(iocb, iter);
2558 ],[
2559         AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1,
2560                 [direct_IO need 2 arguments])
2561 ])
2562 ]) # LC_DIRECTIO_2ARGS
2563
2564 #
2565 # LC_GENERIC_WRITE_SYNC_2ARGS
2566 #
2567 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2568 # direct-io: eliminate the offset argument to ->direct_IO
2569 #
2570 AC_DEFUN([LC_GENERIC_WRITE_SYNC_2ARGS], [
2571 LB_CHECK_COMPILE([if 'generic_write_sync()' taken 2 arguments],
2572 generic_write_sync_2args, [
2573         #include <linux/fs.h>
2574 ],[
2575         struct kiocb *iocb = NULL;
2576         ssize_t rc;
2577
2578         rc = generic_write_sync(iocb, 0);
2579 ],[
2580         AC_DEFINE(HAVE_GENERIC_WRITE_SYNC_2ARGS, 1,
2581                 [generic_write_sync need 2 arguments])
2582 ])
2583 ]) # LC_GENERIC_WRITE_SYNC_2ARGS
2584
2585 #
2586 # LC_FOP_ITERATE_SHARED
2587 #
2588 # Kernel version 4.7 adds iterate_shared method to file_operations
2589 #
2590 AC_DEFUN([LC_FOP_ITERATE_SHARED], [
2591 LB_CHECK_COMPILE([if 'file_operations' has 'iterate_shared'],
2592 fop_iterate_shared, [
2593         #include <linux/fs.h>
2594 ],[
2595         struct file_operations fop;
2596         fop.iterate_shared = NULL;
2597 ],[
2598         AC_DEFINE(HAVE_FOP_ITERATE_SHARED, 1,
2599                 [file_operations has iterate_shared])
2600 ])
2601 ]) # LC_FOP_ITERATE_SHARED
2602
2603 #
2604 # LC_FOPS_ITERATE_SHARED
2605 #
2606 # 4.7 commit ae05327a00fd47c34dfe25294b359a3f3fef96e8
2607 # ext4: switch to ->iterate_shared()
2608 # this replaces ext4_dir_operations iterate with iterate_shared.
2609 # dir_relaxed_shared() was also added in this commit, so we can
2610 # use that function to verify that the ext4_dir_operations is using
2611 # iterate_shared.
2612 #
2613 AC_DEFUN([LC_FOPS_ITERATE_SHARED], [
2614 LB_CHECK_COMPILE([if ext4_dir_operations uses iterate_shared],
2615 iterate_shared, [
2616         #include <linux/fs.h>
2617 ],[
2618         ((struct file_operations *)0)->iterate_shared(NULL, NULL);
2619         dir_relax_shared(NULL);
2620 ],[
2621         AC_DEFINE(HAVE_ITERATE_SHARED, 1,
2622                 ['iterate_shared' is available])
2623 ])
2624 ]) # LC_FOPS_ITERATE_SHARED
2625
2626 #
2627 # LC_HAVE_POSIX_ACL_VALID_USER_NS
2628 #
2629 # 4.8 posix_acl_valid takes struct user_namespace
2630 #
2631 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
2632 LB_CHECK_COMPILE([if 'posix_acl_valid' takes 'struct user_namespace'],
2633 posix_acl_valid, [
2634         #include <linux/fs.h>
2635         #include <linux/posix_acl.h>
2636 ],[
2637         posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
2638 ],[
2639         AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
2640                 [posix_acl_valid takes struct user_namespace])
2641 ])
2642 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
2643
2644 #
2645 # LC_D_COMPARE_4ARGS
2646 #
2647 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
2648 # get rid of 'parent' argument of ->d_compare()
2649 #
2650 AC_DEFUN([LC_D_COMPARE_4ARGS], [
2651 LB_CHECK_COMPILE([if 'd_compare' taken 4 arguments],
2652 d_compare_4args, [
2653         #include <linux/dcache.h>
2654 ],[
2655         ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
2656 ],[
2657         AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
2658                 [d_compare need 4 arguments])
2659 ])
2660 ]) # LC_D_COMPARE_4ARGS
2661
2662 #
2663 # LC_FULL_NAME_HASH_3ARGS
2664 #
2665 # Kernel version 4.8 commit 8387ff2577eb9ed245df9a39947f66976c6bcd02
2666 # vfs: make the string hashes salt the hash
2667 #
2668 AC_DEFUN([LC_FULL_NAME_HASH_3ARGS], [
2669 LB_CHECK_COMPILE([if 'full_name_hash' taken 3 arguments],
2670 full_name_hash_3args, [
2671         #include <linux/stringhash.h>
2672 ],[
2673         unsigned int hash;
2674         hash = full_name_hash(NULL,NULL,0);
2675 ],[
2676         AC_DEFINE(HAVE_FULL_NAME_HASH_3ARGS, 1,
2677                 [full_name_hash need 3 arguments])
2678 ])
2679 ]) # LC_FULL_NAME_HASH_3ARGS
2680
2681 #
2682 # LC_STRUCT_POSIX_ACL_XATTR
2683 #
2684 # Kernel version 4.8 commit 2211d5ba5c6c4e972ba6dbc912b2897425ea6621
2685 # posix_acl: xattr representation cleanups
2686 #
2687 AC_DEFUN([LC_STRUCT_POSIX_ACL_XATTR], [
2688 LB_CHECK_COMPILE([if 'struct posix_acl_xattr_{header,entry}' defined],
2689 struct_posix_acl_xattr, [
2690         #include <linux/fs.h>
2691         #include <linux/posix_acl_xattr.h>
2692 ],[
2693         struct posix_acl_xattr_header *h = NULL;
2694         struct posix_acl_xattr_entry  *e;
2695         e = (void *)(h + 1);
2696 ],[
2697         AC_DEFINE(HAVE_STRUCT_POSIX_ACL_XATTR, 1,
2698                 [struct posix_acl_xattr_{header,entry} defined])
2699 ])
2700 ]) # LC_STRUCT_POSIX_ACL_XATTR
2701
2702 #
2703 # LC_IOP_XATTR
2704 #
2705 # Kernel version 4.8 commit fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42
2706 # removed {get,set,remove}xattr inode operations
2707 #
2708 AC_DEFUN([LC_IOP_XATTR], [
2709 LB_CHECK_COMPILE([if 'inode_operations' has {get,set,remove}xattr members],
2710 inode_ops_xattr, [
2711         #include <linux/fs.h>
2712 ],[
2713         struct inode_operations iop;
2714         iop.setxattr = NULL;
2715         iop.getxattr = NULL;
2716         iop.removexattr = NULL;
2717 ],[
2718         AC_DEFINE(HAVE_IOP_XATTR, 1,
2719                 [inode_operations has {get,set,remove}xattr members])
2720 ])
2721 ]) # LC_IOP_XATTR
2722
2723 #
2724 # LC_GROUP_INFO_GID
2725 #
2726 # Kernel version 4.9 commit 81243eacfa400f5f7b89f4c2323d0de9982bb0fb
2727 # cred: simpler, 1D supplementary groups
2728 #
2729 AC_DEFUN([LC_GROUP_INFO_GID], [
2730 LB_CHECK_COMPILE([if 'struct group_info' has member 'gid'],
2731 group_info_gid, [
2732         #include <linux/cred.h>
2733 ],[
2734         kgid_t *p;
2735         p = ((struct group_info *)0)->gid;
2736 ],[
2737         AC_DEFINE(HAVE_GROUP_INFO_GID, 1,
2738                 [struct group_info has member gid])
2739 ])
2740 ]) # LC_GROUP_INFO_GID
2741
2742 #
2743 # LC_VFS_SETXATTR
2744 #
2745 # Kernel version 4.9 commit 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4
2746 # added __vfs_{get,set,remove}xattr helpers
2747 #
2748 AC_DEFUN([LC_VFS_SETXATTR], [
2749 LB_CHECK_COMPILE([if '__vfs_setxattr' helper is available],
2750 vfs_setxattr, [
2751         #include <linux/xattr.h>
2752 ],[
2753         __vfs_setxattr(NULL, NULL, NULL, NULL, 0, 0);
2754 ],[
2755         AC_DEFINE(HAVE_VFS_SETXATTR, 1,
2756                 ['__vfs_setxattr is available])
2757 ])
2758 ]) # LC_VFS_SETXATTR
2759
2760 #
2761 # LC_POSIX_ACL_UPDATE_MODE
2762 #
2763 # Kernel version 4.9 commit 073931017b49d9458aa351605b43a7e34598caef
2764 # posix_acl: Clear SGID bit when setting file permissions
2765 #
2766 AC_DEFUN([LC_POSIX_ACL_UPDATE_MODE], [
2767 LB_CHECK_COMPILE([if 'posix_acl_update_mode' exists],
2768 posix_acl_update_mode, [
2769         #include <linux/fs.h>
2770         #include <linux/posix_acl.h>
2771 ],[
2772         posix_acl_update_mode(NULL, NULL, NULL);
2773 ],[
2774         AC_DEFINE(HAVE_POSIX_ACL_UPDATE_MODE, 1,
2775                 ['posix_acl_update_mode' is available])
2776 ])
2777 ]) # LC_POSIX_ACL_UPDATE_MODE
2778
2779 #
2780 # LC_IOP_GENERIC_READLINK
2781 #
2782 # Kernel version 4.10 commit dfeef68862edd7d4bafe68ef7aeb5f658ef24bb5
2783 # removed generic_readlink from individual file systems
2784 #
2785 AC_DEFUN([LC_IOP_GENERIC_READLINK], [
2786 LB_CHECK_COMPILE([if 'generic_readlink' still exist],
2787 inode_ops_readlink, [
2788         #include <linux/fs.h>
2789 ],[
2790         struct inode_operations iop;
2791         iop.readlink = generic_readlink;
2792 ],[
2793         AC_DEFINE(HAVE_IOP_GENERIC_READLINK, 1,
2794                 [generic_readlink has been removed])
2795 ])
2796 ]) # LC_IOP_GENERIC_READLINK
2797
2798 #
2799 # LC_HAVE_VM_FAULT_ADDRESS
2800 #
2801 # Kernel version 4.10 commit 1a29d85eb0f19b7d8271923d8917d7b4f5540b3e
2802 # removed virtual_address field. Need to use address field instead
2803 #
2804 AC_DEFUN([LC_HAVE_VM_FAULT_ADDRESS], [
2805 LB_CHECK_COMPILE([if 'struct vm_fault' replaced virtual_address with address field],
2806 vm_fault_address, [
2807         #include <linux/mm.h>
2808 ],[
2809         struct vm_fault vmf;
2810         vmf.address = NULL;
2811 ],[
2812         AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
2813                 [virtual_address has been replaced by address field])
2814 ])
2815 ]) # LC_HAVE_VM_FAULT_ADDRESS
2816
2817 #
2818 # LC_INODEOPS_ENHANCED_GETATTR
2819 #
2820 # Kernel version 4.11 commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
2821 # expanded getattr to be able to get more stat information.
2822 #
2823 AC_DEFUN([LC_INODEOPS_ENHANCED_GETATTR], [
2824 LB_CHECK_COMPILE([if 'inode_operations' getattr member can gather advance stats],
2825 getattr_path, [
2826         #include <linux/fs.h>
2827 ],[
2828         struct path path;
2829
2830         ((struct inode_operations *)1)->getattr(&path, NULL, 0, 0);
2831 ],[
2832         AC_DEFINE(HAVE_INODEOPS_ENHANCED_GETATTR, 1,
2833                 [inode_operations .getattr member function can gather advance stats])
2834 ])
2835 ]) # LC_INODEOPS_ENHANCED_GETATTR
2836
2837 #
2838 # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2839 #
2840 # Kernel version 4.11 commit 11bac80004499ea59f361ef2a5516c84b6eab675
2841 # removed struct vm_area_struct as an argument for vm_operations since
2842 # in the same kernel version struct vma_area_struct was folded into
2843 # struct vm_fault.
2844 #
2845 AC_DEFUN([LC_VM_OPERATIONS_REMOVE_VMF_ARG], [
2846 LB_CHECK_COMPILE([if 'struct vm_operations' removed struct vm_area_struct],
2847 vm_operations_no_vm_area_struct, [
2848         #include <linux/mm.h>
2849 ],[
2850         struct vm_fault vmf;
2851
2852         ((struct vm_operations_struct *)0)->fault(&vmf);
2853         ((struct vm_operations_struct *)0)->page_mkwrite(&vmf);
2854 ],[
2855         AC_DEFINE(HAVE_VM_OPS_USE_VM_FAULT_ONLY, 1,
2856                 ['struct vm_operations' remove struct vm_area_struct argument])
2857 ])
2858 ]) # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2859
2860 #
2861 # LC_HAVE_KEY_USAGE_REFCOUNT
2862 #
2863 # Kernel version 4.11 commit fff292914d3a2f1efd05ca71c2ba72a3c663201e
2864 # converted key.usage from atomic_t to refcount_t.
2865 #
2866 AC_DEFUN([LC_HAVE_KEY_USAGE_REFCOUNT], [
2867 LB_CHECK_COMPILE([if 'key.usage' is refcount_t],
2868 key_usage_refcount, [
2869         #include <linux/key.h>
2870 ],[
2871         struct key key = { };
2872
2873         refcount_read(&key.usage);
2874 ],[
2875         AC_DEFINE(HAVE_KEY_USAGE_REFCOUNT, 1, [key.usage is of type refcount_t])
2876 ])
2877 ]) #LC_HAVE_KEY_USAGE_REFCOUNT
2878
2879 #
2880 # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2881 #
2882 # Kernel version 4.11 commit f437a3f477cce402dbec6537b29e9e33962c9f73
2883 # switched CRYPTO_MAX_ALG_NAME from 64 to 128.
2884 #
2885 AC_DEFUN([LC_HAVE_CRYPTO_MAX_ALG_NAME_128], [
2886 LB_CHECK_COMPILE([if 'CRYPTO_MAX_ALG_NAME' is 128],
2887 crypto_max_alg_name, [
2888         #include <linux/crypto.h>
2889 ],[
2890         #if CRYPTO_MAX_ALG_NAME != 128
2891         exit(1);
2892         #endif
2893 ],[
2894         AC_DEFINE(HAVE_CRYPTO_MAX_ALG_NAME_128, 1,
2895                 ['CRYPTO_MAX_ALG_NAME' is 128])
2896 ])
2897 ]) # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2898
2899 #
2900 # Kernel version 4.12 commit 47f38c539e9a42344ff5a664942075bd4df93876
2901 # CURRENT_TIME is not 64 bit time safe so it was replaced with
2902 # current_time()
2903 #
2904 AC_DEFUN([LC_CURRENT_TIME], [
2905 LB_CHECK_COMPILE([if CURRENT_TIME has been replaced with current_time],
2906 current_time, [
2907         #include <linux/fs.h>
2908 ],[
2909         struct iattr attr;
2910
2911         attr.ia_atime = current_time(NULL);
2912 ],[
2913         AC_DEFINE(HAVE_CURRENT_TIME, 1,
2914                 [current_time() has replaced CURRENT_TIME])
2915 ])
2916 ]) # LIBCFS_CURRENT_TIME
2917
2918 #
2919 # LC_SUPER_SETUP_BDI_NAME
2920 #
2921 # Kernel version 4.12 commit 9594caf216dc0fe3e318b34af0127276db661241
2922 # unified bdi handling
2923 #
2924 AC_DEFUN([LC_SUPER_SETUP_BDI_NAME], [
2925 LB_CHECK_COMPILE([if 'super_setup_bdi_name' exist],
2926 super_setup_bdi_name, [
2927         #include <linux/fs.h>
2928 ],[
2929         super_setup_bdi_name(NULL, "lustre");
2930 ],[
2931         AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1,
2932                 ['super_setup_bdi_name' is available])
2933 ])
2934 ]) # LC_SUPER_SETUP_BDI_NAME
2935
2936 #
2937 # LC_BI_STATUS
2938 #
2939 # 4.12 replace bi_error to bi_status
2940 #
2941 AC_DEFUN([LC_BI_STATUS], [
2942 LB_CHECK_COMPILE([if 'bi_status' exist],
2943 bi_status, [
2944         #include <linux/blk_types.h>
2945 ],[
2946         ((struct bio *)0)->bi_status = 0;
2947 ],[
2948         AC_DEFINE(HAVE_BI_STATUS, 1,
2949                 ['bi_status' is available])
2950 ])
2951 ]) # LC_BI_STATUS
2952
2953 #
2954 # LC_BIO_INTEGRITY_ENABLED
2955 #
2956 # 4.13 removed bio_integrity_enabled
2957 #
2958 AC_DEFUN([LC_BIO_INTEGRITY_ENABLED], [
2959 LB_CHECK_COMPILE([if 'bio_integrity_enabled' exist],
2960 bio_integrity_enabled, [
2961         #include <linux/bio.h>
2962 ],[
2963         bio_integrity_enabled(NULL);
2964 ],[
2965         AC_DEFINE(HAVE_BIO_INTEGRITY_ENABLED, 1,
2966                 ['bio_integrity_enabled' is available])
2967 ])
2968 ]) # LC_BIO_INTEGRITY_ENABLED
2969
2970 #
2971 # LC_PAGEVEC_INIT_ONE_PARAM
2972 #
2973 # 4.14 pagevec_init takes one parameter
2974 #
2975 AC_DEFUN([LC_PAGEVEC_INIT_ONE_PARAM], [
2976 LB_CHECK_COMPILE([if 'pagevec_init' takes one parameter],
2977 pagevec_init, [
2978         #include <linux/pagevec.h>
2979 ],[
2980         pagevec_init(NULL);
2981 ],[
2982         AC_DEFINE(HAVE_PAGEVEC_INIT_ONE_PARAM, 1,
2983                 ['pagevec_init' takes one parameter])
2984 ])
2985 ]) # LC_PAGEVEC_INIT_ONE_PARAM
2986
2987 #
2988 # LC_BI_BDEV
2989 #
2990 # 4.14 replaced bi_bdev to bi_disk
2991 #
2992 AC_DEFUN([LC_BI_BDEV], [
2993 LB_CHECK_COMPILE([if 'bi_bdev' exist],
2994 bi_bdev, [
2995         #include <linux/bio.h>
2996 ],[
2997         ((struct bio *)0)->bi_bdev = NULL;
2998 ],[
2999         AC_DEFINE(HAVE_BI_BDEV, 1,
3000                 ['bi_bdev' is available])
3001 ])
3002 ]) # LC_BI_BDEV
3003
3004 #
3005 # LC_PROG_LINUX
3006 #
3007 # Lustre linux kernel checks
3008 #
3009 AC_DEFUN([LC_PROG_LINUX], [
3010         AC_MSG_NOTICE([Lustre kernel checks
3011 ==============================================================================])
3012
3013         LC_CONFIG_PINGER
3014         LC_CONFIG_CHECKSUM
3015         LC_CONFIG_HEALTH_CHECK_WRITE
3016         LC_CONFIG_LRU_RESIZE
3017
3018         LC_GLIBC_SUPPORT_FHANDLES
3019         LC_CONFIG_GSS
3020         LC_OPENSSL_SSK
3021
3022         # 2.6.32
3023         LC_BLK_QUEUE_MAX_SEGMENTS
3024
3025         # 2.6.33
3026         LC_HAVE_XATTR_HANDLER_FLAGS
3027
3028         # 2.6.34
3029         LC_HAVE_DQUOT_FS_DISK_QUOTA
3030         LC_HAVE_DQUOT_SUSPEND
3031         LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
3032
3033         # 2.6.35, 3.0.0
3034         LC_FILE_FSYNC
3035         LC_EXPORT_SIMPLE_SETATTR
3036         LC_EXPORT_TRUNCATE_COMPLETE_PAGE
3037
3038         # 2.6.36
3039         LC_FS_STRUCT_RWLOCK
3040         LC_SBOPS_EVICT_INODE
3041
3042         # 2.6.37
3043         LC_KERNEL_LOCKED
3044         LC_FS_STRUCT_SEQCOUNT
3045
3046         # 2.6.38
3047         LC_BLKDEV_GET_BY_DEV
3048         LC_GENERIC_PERMISSION
3049         LC_DCACHE_LOCK
3050         LC_INODE_I_RCU
3051         LC_D_COMPARE_7ARGS
3052         LC_D_DELETE_CONST
3053         LC_HAVE_BLK_PLUG
3054
3055         # 2.6.39
3056         LC_HAVE_FHANDLE_SYSCALLS
3057         LC_HAVE_FSTYPE_MOUNT
3058         LC_HAVE_INODE_OWNER_OR_CAPABLE
3059         LC_HAVE_SECURITY_IINITSEC
3060
3061         # 3.0
3062         LC_DIRTY_INODE_WITH_FLAG
3063         LC_SETNS
3064
3065         # 3.1
3066         LC_LM_XXX_LOCK_MANAGER_OPS
3067         LC_INODE_DIO_WAIT
3068         LC_IOP_GET_ACL
3069         LC_FILE_LLSEEK_SIZE
3070         LC_INODE_PERMISION_2ARGS
3071         LC_RADIX_EXCEPTION_ENTRY
3072         LC_HAVE_LOOP_CTL_GET_FREE
3073
3074         # 3.2
3075         LC_HAVE_PROTECT_I_NLINK
3076
3077         # 3.3
3078         LC_HAVE_MIGRATE_HEADER
3079         LC_MIGRATEPAGE_4ARGS
3080         LC_SUPEROPS_USE_DENTRY
3081         LC_INODEOPS_USE_UMODE_T
3082         LC_HAVE_CACHE_REGISTER
3083
3084         # 3.4
3085         LC_HAVE_D_MAKE_ROOT
3086         LC_KMAP_ATOMIC_HAS_1ARG
3087
3088         # 3.5
3089         LC_HAVE_CLEAR_INODE
3090         LC_HAVE_ENCODE_FH_PARENT
3091         LC_FILE_LLSEEK_SIZE_5ARG
3092
3093         # 3.6
3094         LC_DATA_FOR_LLITE_IS_LIST
3095         LC_DENTRY_OPEN_USE_PATH
3096         LC_HAVE_IOP_ATOMIC_OPEN
3097         LC_HAVE_SB_START_WRITE
3098
3099         # 3.7
3100         LC_HAVE_POSIXACL_USER_NS
3101
3102         # 3.8
3103         LC_HAVE_FILE_F_INODE
3104         LC_HAVE_FILE_INODE
3105         LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
3106
3107         # 3.9
3108         LC_HAVE_HLIST_FOR_EACH_3ARG
3109         LC_HAVE_BIO_END_SECTOR
3110         LC_HAVE_IS_SXID
3111
3112         # 3.10
3113         LC_HAVE_REMOVE_PROC_SUBTREE
3114         LC_HAVE_PROC_REMOVE
3115         LC_HAVE_PROJECT_QUOTA
3116         LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
3117
3118         # 3.11
3119         LC_INVALIDATE_RANGE
3120         LC_HAVE_DIR_CONTEXT
3121         LC_D_COMPARE_5ARGS
3122         LC_HAVE_DCOUNT
3123         LC_HAVE_DENTRY_D_U_D_ALIAS
3124         LC_HAVE_DENTRY_D_CHILD
3125         LC_PID_NS_FOR_CHILDREN
3126
3127         # 3.12
3128         LC_OLDSIZE_TRUNCATE_PAGECACHE
3129         LC_PTR_ERR_OR_ZERO_MISSING
3130         LC_KIOCB_KI_LEFT
3131         LC_INIT_LIST_HEAD_RCU
3132
3133         # 3.13
3134         LC_VFS_RENAME_5ARGS
3135         LC_VFS_UNLINK_3ARGS
3136
3137         # 3.14
3138         LC_HAVE_BVEC_ITER
3139         LC_HAVE_TRUNCATE_IPAGES_FINAL
3140         LC_IOPS_RENAME_WITH_FLAGS
3141         LC_IOP_SET_ACL
3142
3143         # 3.15
3144         LC_VFS_RENAME_6ARGS
3145
3146         # 3.16
3147         LC_DIRECTIO_USE_ITER
3148         LC_HAVE_IOV_ITER_INIT_DIRECTION
3149         LC_HAVE_IOV_ITER_TRUNCATE
3150         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
3151
3152         # 3.17
3153         LC_HAVE_INTERVAL_BLK_INTEGRITY
3154         LC_KEY_MATCH_DATA
3155
3156         # 3.18
3157         LC_PERCPU_COUNTER_INIT
3158         LC_NFS_FILLDIR_USE_CTX
3159
3160         # 3.19
3161         LC_KIOCB_HAS_NBYTES
3162         LC_HAVE_DQUOT_QC_DQBLK
3163
3164         # 3.20
3165         LC_BACKING_DEV_INFO_REMOVAL
3166         LC_HAVE_BDI_CAP_MAP_COPY
3167
3168         # 4.0.0
3169         LC_CANCEL_DIRTY_PAGE
3170
3171         # 4.1.0
3172         LC_IOV_ITER_RW
3173         LC_HAVE_SYNC_READ_WRITE
3174         LC_HAVE___BI_CNT
3175
3176         # 4.2
3177         LC_NEW_CANCEL_DIRTY_PAGE
3178         LC_BIO_ENDIO_USES_ONE_ARG
3179         LC_SYMLINK_OPS_USE_NAMEIDATA
3180
3181         # 4.3
3182         LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
3183         LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
3184         LC_HAVE_CACHE_HEAD_HLIST
3185         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
3186
3187         # 4.4
3188         LC_HAVE_LOCKS_LOCK_FILE_WAIT
3189         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
3190         LC_HAVE_XATTR_HANDLER_NAME
3191         LC_HAVE_BI_OPF
3192         LC_HAVE_SUBMIT_BIO_2ARGS
3193         LC_HAVE_CLEAN_BDEV_ALIASES
3194
3195         # 4.5
3196         LC_HAVE_FILE_DENTRY
3197
3198         # 4.5
3199         LC_HAVE_INODE_LOCK
3200         LC_HAVE_IOP_GET_LINK
3201
3202         # 4.6
3203         LC_HAVE_IN_COMPAT_SYSCALL
3204         LC_HAVE_XATTR_HANDLER_INODE_PARAM
3205
3206         # 4.7
3207         LC_D_IN_LOOKUP
3208         LC_DIRECTIO_2ARGS
3209         LC_GENERIC_WRITE_SYNC_2ARGS
3210         LC_FOPS_ITERATE_SHARED
3211
3212         # 4.8
3213         LC_HAVE_POSIX_ACL_VALID_USER_NS
3214         LC_D_COMPARE_4ARGS
3215         LC_FULL_NAME_HASH_3ARGS
3216         LC_STRUCT_POSIX_ACL_XATTR
3217         LC_IOP_XATTR
3218
3219         # 4.9
3220         LC_GROUP_INFO_GID
3221         LC_VFS_SETXATTR
3222         LC_POSIX_ACL_UPDATE_MODE
3223
3224         # 4.10
3225         LC_IOP_GENERIC_READLINK
3226         LC_HAVE_VM_FAULT_ADDRESS
3227
3228         # 4.11
3229         LC_INODEOPS_ENHANCED_GETATTR
3230         LC_VM_OPERATIONS_REMOVE_VMF_ARG
3231         LC_HAVE_KEY_USAGE_REFCOUNT
3232         LC_HAVE_CRYPTO_MAX_ALG_NAME_128
3233
3234         # 4.12
3235         LC_CURRENT_TIME
3236         LC_SUPER_SETUP_BDI_NAME
3237         LC_BI_STATUS
3238
3239         # 4.13
3240         LC_BIO_INTEGRITY_ENABLED
3241
3242         # 4.14
3243         LC_PAGEVEC_INIT_ONE_PARAM
3244         LC_BI_BDEV
3245
3246         # kernel patch to extend integrity interface
3247         LC_BIO_INTEGRITY_PREP_FN
3248
3249         #
3250         AS_IF([test "x$enable_server" != xno], [
3251                 LC_STACK_SIZE
3252                 LC_QUOTA64
3253                 LC_QUOTA_CONFIG
3254         ])
3255 ]) # LC_PROG_LINUX
3256
3257 #
3258 # LC_CONFIG_CLIENT
3259 #
3260 # Check whether to build the client side of Lustre
3261 #
3262 AC_DEFUN([LC_CONFIG_CLIENT], [
3263 AC_MSG_CHECKING([whether to build Lustre client support])
3264 AC_ARG_ENABLE([client],
3265         AC_HELP_STRING([--disable-client],
3266                 [disable Lustre client support]),
3267         [], [enable_client="yes"])
3268 AC_MSG_RESULT([$enable_client])
3269 ]) # LC_CONFIG_CLIENT
3270
3271 #
3272 # --enable-mpitests
3273 #
3274 AC_DEFUN([LB_CONFIG_MPITESTS], [
3275 AC_ARG_ENABLE([mpitests],
3276         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
3277                        [include mpi tests]), [
3278                 enable_mpitests="yes"
3279                 case $enableval in
3280                 yes)
3281                         MPICC_WRAPPER="mpicc"
3282                         ;;
3283                 no)
3284                         enable_mpitests="no"
3285                         ;;
3286                 *)
3287                         MPICC_WRAPPER=$enableval
3288                         ;;
3289                 esac
3290         ], [
3291                 enable_mpitests="yes"
3292                 MPICC_WRAPPER="mpicc"
3293         ])
3294
3295         if test "x$enable_mpitests" != "xno"; then
3296                 oldcc=$CC
3297                 CC=$MPICC_WRAPPER
3298                 AC_CACHE_CHECK([whether mpitests can be built],
3299                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
3300                         #include <mpi.h>
3301                         int main(void) {
3302                                 int flag;
3303                                 MPI_Initialized(&flag);
3304                                 return 0;
3305                         }
3306                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
3307                 ])
3308                 enable_mpitests=$lb_cv_mpi_tests
3309                 CC=$oldcc
3310         fi
3311         AC_SUBST(MPICC_WRAPPER)
3312 ]) # LB_CONFIG_MPITESTS
3313
3314 #
3315 # LC_CONFIG_QUOTA
3316 #
3317 # whether to enable quota support global control
3318 #
3319 AC_DEFUN([LC_CONFIG_QUOTA], [
3320 AC_MSG_CHECKING([whether to enable quota support global control])
3321 AC_ARG_ENABLE([quota],
3322         AC_HELP_STRING([--enable-quota],
3323                 [enable quota support]),
3324         [], [enable_quota="yes"])
3325 AS_IF([test "x$enable_quota" = xyes],
3326         [AC_MSG_RESULT([yes])],
3327         [AC_MSG_RESULT([no])])
3328 ]) # LC_CONFIG_QUOTA
3329
3330 #
3331 # LC_QUOTA
3332 #
3333 AC_DEFUN([LC_QUOTA], [
3334 #check global
3335 LC_CONFIG_QUOTA
3336 #check for utils
3337 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
3338         AC_CHECK_HEADER([sys/quota.h],
3339                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
3340                         [Define to 1 if you have <sys/quota.h>.])],
3341                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
3342 ])
3343 ]) # LC_QUOTA
3344
3345 #
3346 # LC_OSD_ADDON
3347 #
3348 # configure support for optional OSD implementation
3349 #
3350 AC_DEFUN([LC_OSD_ADDON], [
3351 AC_MSG_CHECKING([whether to use OSD addon])
3352 AC_ARG_WITH([osd],
3353         AC_HELP_STRING([--with-osd=path],
3354                 [set path to optional osd]),
3355         [
3356         case "$with_osd" in
3357         no)
3358                 ENABLEOSDADDON=0
3359                 ;;
3360         *)
3361                 OSDADDON="$with_osd"
3362                 ENABLEOSDADDON=1
3363                 ;;
3364         esac
3365         ], [
3366                 ENABLEOSDADDON=0
3367         ])
3368 AS_IF([test $ENABLEOSDADDON -eq 0], [
3369         AC_MSG_RESULT([no])
3370         OSDADDON=""
3371 ], [
3372         OSDMODNAME=$(basename $OSDADDON)
3373         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
3374                 AC_MSG_RESULT([can't link])
3375                 OSDADDON=""
3376         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
3377                 AC_MSG_RESULT([$OSDMODNAME])
3378                 OSDADDON="subdir-m += $OSDMODNAME"
3379         ], [
3380                 AC_MSG_RESULT([can't link])
3381                 OSDADDON=""
3382         ])
3383 ])
3384 AC_SUBST(OSDADDON)
3385 ]) # LC_OSD_ADDON
3386
3387 #
3388 # LC_CONFIGURE
3389 #
3390 # other configure checks
3391 #
3392 AC_DEFUN([LC_CONFIGURE], [
3393 AC_MSG_NOTICE([Lustre core checks
3394 ==============================================================================])
3395
3396 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
3397         [CFLAGS="$CFLAGS -Wall -Werror"])
3398
3399 # maximum MDS thread count
3400 LC_MDS_MAX_THREADS
3401
3402 # lustre/utils/gss/gss_util.c
3403 # lustre/utils/gss/gssd_proc.c
3404 # lustre/utils/gss/krb5_util.c
3405 # lustre/utils/llog_reader.c
3406 # lustre/utils/create_iam.c
3407 # lustre/utils/libiam.c
3408 AC_CHECK_HEADERS([netdb.h endian.h])
3409 AC_CHECK_FUNCS([gethostbyname])
3410
3411 # lustre/utils/llverdev.c
3412 AC_CHECK_HEADERS([blkid/blkid.h])
3413
3414 # lustre/utils/llverfs.c
3415 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
3416
3417 # lustre/utils/lfs.c
3418 AC_CHECK_LIB([z], [crc32], [
3419              AC_CHECK_HEADER([zlib.h], [], [
3420                              AC_MSG_ERROR([zlib.h not found.])])
3421              ], [
3422              AC_MSG_ERROR([
3423 zlib library not found. Please install zlib development package.])
3424 ])
3425
3426 SELINUX=""
3427 AC_CHECK_LIB([selinux], [is_selinux_enabled],
3428         [AC_CHECK_HEADERS([selinux/selinux.h],
3429                         [SELINUX="-lselinux"
3430                         AC_DEFINE([HAVE_SELINUX], 1,
3431                                 [support for selinux ])],
3432                         [AC_MSG_WARN([
3433
3434 No libselinux-devel package found, unable to build selinux enabled tools
3435 ])
3436 ])],
3437         [AC_MSG_WARN([
3438
3439 No selinux package found, unable to build selinux enabled tools
3440 ])
3441 ])
3442 AC_SUBST(SELINUX)
3443
3444 # Super safe df
3445 AC_MSG_CHECKING([whether to report minimum OST free space])
3446 AC_ARG_ENABLE([mindf],
3447         AC_HELP_STRING([--enable-mindf],
3448                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
3449         [], [enable_mindf="no"])
3450 AC_MSG_RESULT([$enable_mindf])
3451 AS_IF([test "$enable_mindf" = "yes"],
3452         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
3453
3454 AC_MSG_CHECKING([whether to randomly failing memory alloc])
3455 AC_ARG_ENABLE([fail_alloc],
3456         AC_HELP_STRING([--disable-fail-alloc],
3457                 [disable randomly alloc failure]),
3458         [], [enable_fail_alloc="yes"])
3459 AC_MSG_RESULT([$enable_fail_alloc])
3460 AS_IF([test "x$enable_fail_alloc" != xno],
3461         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
3462                 [enable randomly alloc failure])])
3463
3464 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
3465 AC_ARG_ENABLE([invariants],
3466         AC_HELP_STRING([--enable-invariants],
3467                 [enable invariant checking (cpu intensive)]),
3468         [], [enable_invariants="no"])
3469 AC_MSG_RESULT([$enable_invariants])
3470 AS_IF([test "x$enable_invariants" = xyes],
3471         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
3472                 [enable invariant checking])])
3473
3474 AC_MSG_CHECKING([whether to track references with lu_ref])
3475 AC_ARG_ENABLE([lu_ref],
3476         AC_HELP_STRING([--enable-lu_ref],
3477                 [enable lu_ref reference tracking code]),
3478         [], [enable_lu_ref="no"])
3479 AC_MSG_RESULT([$enable_lu_ref])
3480 AS_IF([test "x$enable_lu_ref" = xyes],
3481         [AC_DEFINE([USE_LU_REF], 1,
3482                 [enable lu_ref reference tracking code])])
3483
3484 AC_MSG_CHECKING([whether to enable page state tracking])
3485 AC_ARG_ENABLE([pgstate-track],
3486         AC_HELP_STRING([--enable-pgstate-track],
3487                 [enable page state tracking]),
3488         [], [enable_pgstat_track="no"])
3489 AC_MSG_RESULT([$enable_pgstat_track])
3490 AS_IF([test "x$enable_pgstat_track" = xyes],
3491         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
3492                 [enable page state tracking code])])
3493
3494 PKG_PROG_PKG_CONFIG
3495 AC_MSG_CHECKING([systemd unit file directory])
3496 AC_ARG_WITH([systemdsystemunitdir],
3497         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
3498                 [Directory for systemd service files])],
3499         [], [with_systemdsystemunitdir=auto])
3500 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
3501         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
3502         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
3503                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
3504                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
3505                 with_systemdsystemunitdir=no],
3506         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
3507 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
3508         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
3509 AC_MSG_RESULT([$with_systemdsystemunitdir])
3510 ]) # LC_CONFIGURE
3511
3512 #
3513 # LC_CONDITIONALS
3514 #
3515 # AM_CONDITIONALS for lustre
3516 #
3517 AC_DEFUN([LC_CONDITIONALS], [
3518 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
3519 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
3520 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
3521 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
3522 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
3523 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
3524 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
3525 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
3526 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
3527 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
3528 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
3529 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
3530 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
3531 AM_CONDITIONAL(SELINUX, test "$SELINUX" = "-lselinux")
3532 ]) # LC_CONDITIONALS
3533
3534 #
3535 # LC_CONFIG_FILES
3536 #
3537 # files that should be generated with AC_OUTPUT
3538 #
3539 AC_DEFUN([LC_CONFIG_FILES],
3540 [AC_CONFIG_FILES([
3541 lustre/Makefile
3542 lustre/autoMakefile
3543 lustre/autoconf/Makefile
3544 lustre/conf/Makefile
3545 lustre/conf/resource/Makefile
3546 lustre/contrib/Makefile
3547 lustre/doc/Makefile
3548 lustre/include/Makefile
3549 lustre/include/lustre/Makefile
3550 lustre/include/uapi/linux/lustre/Makefile
3551 lustre/kernel_patches/targets/3.10-rhel7.6.target
3552 lustre/kernel_patches/targets/3.10-rhel7.5.target
3553 lustre/kernel_patches/targets/4.14-rhel7.5.target
3554 lustre/kernel_patches/targets/4.14-rhel7.6.target
3555 lustre/kernel_patches/targets/2.6-rhel6.9.target
3556 lustre/kernel_patches/targets/2.6-rhel6.8.target
3557 lustre/kernel_patches/targets/2.6-rhel6.7.target
3558 lustre/kernel_patches/targets/2.6-rhel6.6.target
3559 lustre/kernel_patches/targets/2.6-rhel6.target
3560 lustre/kernel_patches/targets/2.6-rhel5.target
3561 lustre/kernel_patches/targets/2.6-sles11.target
3562 lustre/kernel_patches/targets/3.0-sles11.target
3563 lustre/kernel_patches/targets/3.0-sles11sp3.target
3564 lustre/kernel_patches/targets/3.0-sles11sp4.target
3565 lustre/kernel_patches/targets/3.12-sles12.target
3566 lustre/kernel_patches/targets/4.4-sles12.target
3567 lustre/kernel_patches/targets/4.4-sles12sp3.target
3568 lustre/kernel_patches/targets/2.6-fc11.target
3569 lustre/kernel_patches/targets/2.6-fc12.target
3570 lustre/kernel_patches/targets/2.6-fc15.target
3571 lustre/kernel_patches/targets/3.x-fc18.target
3572 lustre/ldlm/Makefile
3573 lustre/fid/Makefile
3574 lustre/fid/autoMakefile
3575 lustre/llite/Makefile
3576 lustre/llite/autoMakefile
3577 lustre/lov/Makefile
3578 lustre/lov/autoMakefile
3579 lustre/mdc/Makefile
3580 lustre/mdc/autoMakefile
3581 lustre/lmv/Makefile
3582 lustre/lmv/autoMakefile
3583 lustre/lfsck/Makefile
3584 lustre/lfsck/autoMakefile
3585 lustre/mdt/Makefile
3586 lustre/mdt/autoMakefile
3587 lustre/mdd/Makefile
3588 lustre/mdd/autoMakefile
3589 lustre/fld/Makefile
3590 lustre/fld/autoMakefile
3591 lustre/obdclass/Makefile
3592 lustre/obdclass/autoMakefile
3593 lustre/obdecho/Makefile
3594 lustre/obdecho/autoMakefile
3595 lustre/ofd/Makefile
3596 lustre/ofd/autoMakefile
3597 lustre/osc/Makefile
3598 lustre/osc/autoMakefile
3599 lustre/ost/Makefile
3600 lustre/ost/autoMakefile
3601 lustre/osd-ldiskfs/Makefile
3602 lustre/osd-ldiskfs/autoMakefile
3603 lustre/osd-zfs/Makefile
3604 lustre/osd-zfs/autoMakefile
3605 lustre/mgc/Makefile
3606 lustre/mgc/autoMakefile
3607 lustre/mgs/Makefile
3608 lustre/mgs/autoMakefile
3609 lustre/target/Makefile
3610 lustre/ptlrpc/Makefile
3611 lustre/ptlrpc/autoMakefile
3612 lustre/ptlrpc/gss/Makefile
3613 lustre/ptlrpc/gss/autoMakefile
3614 lustre/quota/Makefile
3615 lustre/quota/autoMakefile
3616 lustre/scripts/Makefile
3617 lustre/scripts/systemd/Makefile
3618 lustre/tests/Makefile
3619 lustre/tests/mpi/Makefile
3620 lustre/tests/kernel/Makefile
3621 lustre/tests/kernel/autoMakefile
3622 lustre/utils/Makefile
3623 lustre/utils/gss/Makefile
3624 lustre/osp/Makefile
3625 lustre/osp/autoMakefile
3626 lustre/lod/Makefile
3627 lustre/lod/autoMakefile
3628 ])
3629 ]) # LC_CONFIG_FILES