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$sunrpc_required" = xyes], [
 261                 AC_MSG_ERROR([
 262
 263 kernel SUNRPC support is required by using GSS.
 264 ])
 265         ])])
 266 ]) # LC_CONFIG_SUNRPC
 267
 268 #
 269 # LC_HAVE_CRYPTO_HASH
 270 #
 271 # 4.6 kernel commit 896545098777564212b9e91af4c973f094649aa7
 272 # removed crypto_hash support. Since GSS only works with
 273 # crypto_hash it has to be disabled for newer distros.
 274 #
 275 AC_DEFUN([LC_HAVE_CRYPTO_HASH], [
 276 LB_CHECK_COMPILE([if crypto_hash API is supported],
 277 crypto_hash, [
 278         #include <linux/crypto.h>
 279 ],[
 280         crypto_hash_digestsize(NULL);
 281 ], [], [enable_gss="no"])
 282 ])
 283 ]) # LC_HAVE_CRYPTO_HASH
 284
 285 #
 286 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 287 #
 288 # Build gss and related tools of Lustre. Currently both kernel and user space
 289 # parts are depend on linux platform.
 290 #
 291 AC_DEFUN([LC_CONFIG_GSS], [
 292 AC_MSG_CHECKING([whether to enable gss support])
 293 AC_ARG_ENABLE([gss],
 294         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 295         [], [enable_gss="auto"])
 296 AC_MSG_RESULT([$enable_gss])
 297
 298 AS_IF([test "x$enable_gss" != xno], [
 299         LC_CONFIG_GSS_KEYRING
 300         LC_HAVE_CRYPTO_HASH
 301         LC_HAVE_CRED_TGCRED
 302         LC_KEY_TYPE_INSTANTIATE_2ARGS
 303         sunrpc_required=$enable_gss
 304         LC_CONFIG_SUNRPC
 305         sunrpc_required="no"
 306
 307         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 308                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 309         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 310                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 311         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 312                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 313         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 314                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 315
 316         require_krb5=$enable_gss
 317         AC_KERBEROS_V5
 318         require_krb5="no"
 319
 320         AS_IF([test -n "$KRBDIR"], [
 321                 gss_conf_test="success"
 322         ], [
 323                 gss_conf_test="failure"
 324         ])
 325
 326         AS_IF([test "x$gss_conf_test" = xsuccess], [
 327                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 328                 enable_gss="yes"
 329         ], [
 330                 enable_gss="no"
 331         ])
 332
 333         enable_ssk=$enable_gss
 334 ])
 335 ]) # LC_CONFIG_GSS
 336
 337 # LC_OPENSSL_SSK
 338 #
 339 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 340 AC_DEFUN([LC_OPENSSL_SSK], [
 341 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 342 AS_IF([test "x$enable_ssk" != xno], [
 343 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 344         #include <openssl/hmac.h>
 345         #include <openssl/evp.h>
 346
 347         int main(void) {
 348                 int rc;
 349                 HMAC_CTX ctx;
 350                 HMAC_CTX_init(&ctx);
 351                 rc = HMAC_Init_ex(&ctx, "test", 4, EVP_md_null(), NULL);
 352         }
 353 ])],[AC_DEFINE(HAVE_OPENSSL_SSK, 1,
 354                [OpenSSL HMAC functions needed for SSK])],
 355         [enable_ssk="no"])
 356 ])
 357 AC_MSG_RESULT([$enable_ssk])
 358 ]) # LC_OPENSSL_SSK
 359
 360 # LC_INODE_PERMISION_2ARGS
 361 #
 362 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 363 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 364 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 365 # v3.1 onward have a 2 arg version (inode, mask)
 366 #
 367 AC_DEFUN([LC_INODE_PERMISION_2ARGS], [
 368 LB_CHECK_COMPILE([if 'inode_operations->permission' has two args],
 369 inode_ops_permission_2args, [
 370         #include <linux/fs.h>
 371 ],[
 372         struct inode *inode __attribute__ ((unused));
 373
 374         inode = NULL;
 375         inode->i_op->permission(NULL, 0);
 376 ],[
 377         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 378                 [inode_operations->permission has two args])
 379 ])
 380 ]) # LC_INODE_PERMISION_2ARGS
 381
 382 #
 383 # LC_BLK_QUEUE_MAX_SEGMENTS
 384 #
 385 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 386 #
 387 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS], [
 388 LB_CHECK_COMPILE([if 'blk_queue_max_segments' is defined],
 389 blk_queue_max_segments, [
 390         #include <linux/blkdev.h>
 391 ],[
 392         blk_queue_max_segments(NULL, 0);
 393 ],[
 394         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 395                 [blk_queue_max_segments is defined])
 396 ])
 397 ]) # LC_BLK_QUEUE_MAX_SEGMENTS
 398
 399 #
 400 # LC_HAVE_XATTR_HANDLER_FLAGS
 401 #
 402 # 2.6.33 added a private flag to xattr_handler
 403 #
 404 AC_DEFUN([LC_HAVE_XATTR_HANDLER_FLAGS], [
 405 LB_CHECK_COMPILE([if 'struct xattr_handler' has flags field],
 406 xattr_handler_flags, [
 407         #include <linux/xattr.h>
 408 ],[
 409         struct xattr_handler handler;
 410
 411         handler.flags = 0;
 412 ],[
 413         AC_DEFINE(HAVE_XATTR_HANDLER_FLAGS, 1, [flags field exist])
 414 ])
 415 ]) # LC_HAVE_XATTR_HANDLER_FLAGS
 416
 417 #
 418 # LC_HAVE_DQUOT_FS_DISK_QUOTA
 419 #
 420 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 421 #
 422 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA], [
 423 tmp_flags="$EXTRA_KCFLAGS"
 424 EXTRA_KCFLAGS="-Werror"
 425 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct fs_disk_quota],
 426 fs_disk_quota, [
 427         #include <linux/fs.h>
 428         #include <linux/quota.h>
 429 ],[
 430         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 431 ],[
 432         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 433                 [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 434 ],[
 435         LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct kqid & fs_disk_quota],
 436         kqid_fs_disk_quota, [
 437                 #include <linux/fs.h>
 438                 #include <linux/quota.h>
 439         ],[
 440                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 441         ],[
 442                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 443                         [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 444                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
 445                         [quotactl_ops.set_dqblk takes struct kqid])
 446         ])
 447 ])
 448 EXTRA_KCFLAGS="$tmp_flags"
 449 ]) # LC_HAVE_DQUOT_FS_DISK_QUOTA
 450
 451 #
 452 # LC_HAVE_DQUOT_SUSPEND
 453 #
 454 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 455 #
 456 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND], [
 457 LB_CHECK_COMPILE([if 'dquot_suspend' is defined],
 458 dquot_suspend, [
 459         #include <linux/quotaops.h>
 460 ],[
 461         dquot_suspend(NULL, -1);
 462 ],[
 463         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 464 ])
 465 ]) # LC_HAVE_DQUOT_SUSPEND
 466
 467 #
 468 # LC_QUOTA64
 469 #
 470 # Check if kernel has been patched for 64-bit quota limits support.
 471 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 472 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 473 # that in the absence of quotaio_v1.h in the kernel headers.
 474 #
 475 AC_DEFUN([LC_QUOTA64], [
 476 tmp_flags="$EXTRA_KCFLAGS"
 477 EXTRA_KCFLAGS="-I$LINUX/fs"
 478 LB_CHECK_COMPILE([if kernel has 64-bit quota limits support],
 479 quota64, [
 480         #include <linux/kernel.h>
 481         #include <linux/fs.h>
 482         #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 483         #include <quota/quotaio_v2.h>
 484         struct v2r1_disk_dqblk dqblk_r1;
 485         #else
 486         #include <linux/quota.h>
 487         int ver = QFMT_VFS_V1;
 488         #endif
 489 ], [], [
 490         AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 491 ],[
 492         LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],
 493                 [AC_MSG_ERROR([You have got no 64-bit kernel quota support.])])
 494 ])
 495 EXTRA_KCFLAGS=$tmp_flags
 496 ]) # LC_QUOTA64
 497
 498 #
 499 # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 500 #
 501 # 2.6.34 adds __add_wait_queue_exclusive
 502 #
 503 AC_DEFUN([LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE], [
 504 LB_CHECK_COMPILE([if '__add_wait_queue_exclusive' exists],
 505 __add_wait_queue_exclusive, [
 506         #include <linux/wait.h>
 507 ],[
 508         wait_queue_head_t queue;
 509         wait_queue_t      wait;
 510         __add_wait_queue_exclusive(&queue, &wait);
 511 ],[
 512         AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
 513                   [__add_wait_queue_exclusive exists])
 514 ])
 515 ]) # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 516
 517 #
 518 # LC_FS_STRUCT_RWLOCK
 519 #
 520 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 521 #
 522 AC_DEFUN([LC_FS_STRUCT_RWLOCK], [
 523 LB_CHECK_COMPILE([if 'fs_struct.lock' use rwlock],
 524 fs_struct_rwlock, [
 525         #include <asm/atomic.h>
 526         #include <linux/spinlock.h>
 527         #include <linux/fs_struct.h>
 528 ],[
 529         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 530 ],[
 531         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1, [fs_struct.lock use rwlock])
 532 ])
 533 ]) # LC_FS_STRUCT_RWLOCK
 534
 535 #
 536 # LC_SBOPS_EVICT_INODE
 537 #
 538 # 2.6.36 super_operations add evict_inode method. it hybird of
 539 # delete_inode & clear_inode.
 540 #
 541 AC_DEFUN([LC_SBOPS_EVICT_INODE], [
 542 LB_CHECK_COMPILE([if 'super_operations.evict_inode' exist],
 543 super_ops_evict_inode, [
 544         #include <linux/fs.h>
 545 ],[
 546         ((struct super_operations *)0)->evict_inode(NULL);
 547 ],[
 548         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 549                 [super_operations.evict_inode() is exist in kernel])
 550 ])
 551 ]) # LC_SBOPS_EVICT_INODE
 552
 553 #
 554 # LC_FILE_FSYNC
 555 #
 556 # 2.6.35 file_operations.fsync taken 2 arguments.
 557 # 3.0.0 file_operations.fsync takes 4 arguments.
 558 #
 559 AC_DEFUN([LC_FILE_FSYNC], [
 560 LB_CHECK_COMPILE([if 'file_operations.fsync' takes 4 arguments],
 561 file_ops_fsync_4args, [
 562         #include <linux/fs.h>
 563 ],[
 564         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 565 ],[
 566         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 567                 [file_operations.fsync takes 4 arguments])
 568 ],[
 569         LB_CHECK_COMPILE([if 'file_operations.fsync' takes 2 arguments],
 570         file_ops_fsync_2args, [
 571                 #include <linux/fs.h>
 572         ],[
 573                 ((struct file_operations *)0)->fsync(NULL, 0);
 574         ],[
 575                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 576                         [file_operations.fsync takes 2 arguments])
 577         ])
 578 ])
 579 ]) # LC_FILE_FSYNC
 580
 581 #
 582 # LC_KERNEL_LOCKED
 583 #
 584 # 2.6.37 remove kernel_locked
 585 #
 586 AC_DEFUN([LC_KERNEL_LOCKED], [
 587 LB_CHECK_COMPILE([if 'kernel_locked' is defined],
 588 kernel_locked, [
 589         #include <linux/smp_lock.h>
 590 ],[
 591         kernel_locked();
 592 ],[
 593         AC_DEFINE(HAVE_KERNEL_LOCKED, 1, [kernel_locked is defined])
 594 ])
 595 ]) # LC_KERNEL_LOCKED
 596
 597 #
 598 # LC_D_COMPARE_7ARGS
 599 #
 600 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 601 #
 602 AC_DEFUN([LC_D_COMPARE_7ARGS], [
 603 LB_CHECK_COMPILE([if 'dentry_operations.d_compare()' taken 7 arguments],
 604 dentry_ops_d_compare_7arg, [
 605         #include <linux/dcache.h>
 606 ],[
 607         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 608 ],[
 609         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1, [d_compare need 7 arguments])
 610 ])
 611 ]) # LC_D_COMPARE_7ARGS
 612
 613 #
 614 # LC_D_DELETE_CONST
 615 #
 616 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 617 #
 618 AC_DEFUN([LC_D_DELETE_CONST], [
 619 tmp_flags="$EXTRA_KCFLAGS"
 620 EXTRA_KCFLAGS="-Werror"
 621 LB_CHECK_COMPILE([if 'dentry_operations.d_delete()' has const declare on first parameter],
 622 dentry_ops_d_delete_1st_const, [
 623         #include <linux/dcache.h>
 624 ],[
 625         const struct dentry *d = NULL;
 626         ((struct dentry_operations*)0)->d_delete(d);
 627 ],[
 628         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 629                 [d_delete first parameter declared const])
 630 ],[
 631         AC_DEFINE(HAVE_D_DELETE_CONST, [],
 632                 [d_delete first parameter declared is not const])
 633 ])
 634 EXTRA_KCFLAGS="$tmp_flags"
 635 ]) # LC_D_DELETE_CONST
 636
 637 #
 638 # LC_DCACHE_LOCK
 639 #
 640 # 2.6.38 dcache_lock removed. rcu-walk committed.
 641 #
 642 AC_DEFUN([LC_DCACHE_LOCK], [
 643 LB_CHECK_COMPILE([if 'dcache_lock' is exist],
 644 dcache_lock, [
 645         #include <linux/dcache.h>
 646 ],[
 647         spin_lock(&dcache_lock);
 648 ],[
 649         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 650                 [dcache_lock is exist])
 651 ])
 652 ]) # LC_DCACHE_LOCK
 653
 654 #
 655 # LC_INODE_I_RCU
 656 #
 657 # 2.6.38 inode.i_rcu added.
 658 #
 659 AC_DEFUN([LC_INODE_I_RCU], [
 660 LB_CHECK_COMPILE([if 'inode.i_rcu' exists],
 661 inode_i_rcu, [
 662         #include <linux/fs.h>
 663 ],[
 664         struct inode ino;
 665         struct rcu_head rcu = {};
 666         ino.i_rcu = rcu;
 667 ],[
 668         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 669                 [inode.i_rcu exists])
 670 ])
 671 ]) # LC_INODE_I_RCU
 672
 673 #
 674 # LC_BLKDEV_GET_BY_DEV
 675 #
 676 # 2.6.38 export blkdev_get_by_dev
 677 #
 678 AC_DEFUN([LC_BLKDEV_GET_BY_DEV], [
 679 LB_CHECK_EXPORT([blkdev_get_by_dev], [fs/block_dev.c],
 680         [AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 681                 [blkdev_get_by_dev is exported by the kernel])])
 682 ]) # LC_BLKDEV_GET_BY_DEV
 683
 684 #
 685 # LC_EXPORT_SIMPLE_SETATTR
 686 #
 687 # 2.6.38 export simple_setattr
 688 #
 689 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR], [
 690 LB_CHECK_EXPORT([simple_setattr], [fs/libfs.c],
 691         [AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 692                 [simple_setattr is exported by the kernel])])
 693 ]) # LC_EXPORT_SIMPLE_SETATTR
 694
 695 #
 696 # LC_HAVE_BLK_PLUG
 697 #
 698 # 2.6.38 add struct blk_plug
 699 #
 700 AC_DEFUN([LC_HAVE_BLK_PLUG], [
 701 LB_CHECK_COMPILE([if 'struct blk_plug' exists],
 702 blk_plug, [
 703         #include <linux/blkdev.h>
 704 ],[
 705         struct blk_plug plug;
 706
 707         blk_start_plug(&plug);
 708         blk_finish_plug(&plug);
 709 ],[
 710         AC_DEFINE(HAVE_BLK_PLUG, 1,
 711                 [blk_plug struct exists])
 712 ])
 713 ]) # LC_HAVE_BLK_PLUG
 714
 715 #
 716 # LC_IOP_TRUNCATE
 717 #
 718 # truncate callback removed since 2.6.39
 719 #
 720 AC_DEFUN([LC_IOP_TRUNCATE], [
 721 LB_CHECK_COMPILE([if 'inode_operations' has '.truncate' member function],
 722 inode_ops_truncate, [
 723         #include <linux/fs.h>
 724 ],[
 725         ((struct inode_operations *)0)->truncate(NULL);
 726 ],[
 727         AC_DEFINE(HAVE_INODEOPS_TRUNCATE, 1,
 728                 [inode_operations has .truncate member function])
 729 ])
 730 ]) # LC_IOP_TRUNCATE
 731
 732 #
 733 # LC_HAVE_FSTYPE_MOUNT
 734 #
 735 # 2.6.39 replace get_sb with mount in struct file_system_type
 736 #
 737 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT], [
 738 LB_CHECK_COMPILE([if 'file_system_type' has 'mount' field],
 739 file_system_type_mount, [
 740         #include <linux/fs.h>
 741 ],[
 742         struct file_system_type fst;
 743         void *i = (void *) fst.mount;
 744 ],[
 745         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 746                 [struct file_system_type has mount field])
 747 ])
 748 ]) # LC_HAVE_FSTYPE_MOUNT
 749
 750 #
 751 # LC_HAVE_FHANDLE_SYSCALLS
 752 #
 753 # 2.6.39 The open_by_handle_at() and name_to_handle_at() system calls were
 754 # added to Linux kernel 2.6.39.
 755 # Check if client supports these functions
 756 #
 757 AC_DEFUN([LC_HAVE_FHANDLE_SYSCALLS], [
 758 LB_CHECK_CONFIG_IM([FHANDLE],[
 759         AC_DEFINE(HAVE_FHANDLE_SYSCALLS, 1,
 760                 [kernel supports fhandles and related syscalls])
 761         ])
 762 ]) # LC_HAVE_FHANDLE_SYSCALLS
 763
 764 #
 765 # LC_HAVE_INODE_OWNER_OR_CAPABLE
 766 #
 767 # 2.6.39 renames is_owner_or_cap to inode_owner_or_capable
 768 #
 769 AC_DEFUN([LC_HAVE_INODE_OWNER_OR_CAPABLE], [
 770 LB_CHECK_COMPILE([if 'inode_owner_or_capable' exist],
 771 inode_owner_or_capable, [
 772         #include <linux/fs.h>
 773 ],[
 774         inode_owner_or_capable(NULL);
 775 ],[
 776         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
 777                 [inode_owner_or_capable exist])
 778 ])
 779 ]) # LC_HAVE_INODE_OWNER_OR_CAPABLE
 780
 781 #
 782 # LC_DIRTY_INODE_WITH_FLAG
 783 #
 784 # 3.0 dirty_inode() has a flag parameter
 785 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 786 #
 787 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG], [
 788 LB_CHECK_COMPILE([if 'dirty_inode' super_operation takes flag],
 789 dirty_inode_super_operation_flag, [
 790         #include <linux/fs.h>
 791 ],[
 792         struct inode *inode;
 793         inode->i_sb->s_op->dirty_inode(NULL, 0);
 794 ],[
 795         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 796                 [dirty_inode super_operation takes flag])
 797 ])
 798 ]) # LC_DIRTY_INODE_WITH_FLAG
 799
 800 #
 801 # LC_SETNS
 802 #
 803 # 3.0 introduced setns
 804 #
 805 AC_DEFUN([LC_SETNS], [
 806 AC_CHECK_HEADERS([sched.h], [], [],
 807                  [#define _GNU_SOURCE
 808                  ])
 809 AC_CHECK_FUNCS([setns])
 810 ]) # LC_SETNS
 811
 812 #
 813 # LC_GENERIC_PERMISSION
 814 #
 815 # 2.6.38 generic_permission taken 4 parameters.
 816 # in fact, it means rcu-walk aware permission bring.
 817 #
 818 # 3.1 generic_permission taken 2 parameters.
 819 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 820 #
 821 AC_DEFUN([LC_GENERIC_PERMISSION], [
 822 LB_CHECK_COMPILE([if 'generic_permission' take 2 arguments],
 823 generic_permission_2args, [
 824         #include <linux/fs.h>
 825 ],[
 826         generic_permission(NULL, 0);
 827 ],[
 828         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 829                 [generic_permission taken 2 arguments])
 830 ],[
 831         LB_CHECK_COMPILE([if 'generic_permission' take 4 arguments],
 832         generic_permission_4args, [
 833                 #include <linux/fs.h>
 834         ],[
 835                 generic_permission(NULL, 0, 0, NULL);
 836         ],[
 837                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 838                         [generic_permission taken 4 arguments])
 839         ])
 840 ])
 841 ]) # LC_GENERIC_PERMISSION
 842
 843 #
 844 # LC_LM_XXX_LOCK_MANAGER_OPS
 845 #
 846 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 847 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 848 #
 849 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS], [
 850 LB_CHECK_COMPILE([if 'lock-manager' ops renamed to 'lm_xxx'],
 851 lock_manager_ops_lm_xxx, [
 852         #include <linux/fs.h>
 853 ],[
 854         struct lock_manager_operations lm_ops;
 855         lm_ops.lm_compare_owner = NULL;
 856 ],[
 857         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 858                 [lock-manager ops renamed to lm_xxx])
 859 ])
 860 ]) # LC_LM_XXX_LOCK_MANAGER_OPS
 861
 862 #
 863 # LC_INODE_DIO_WAIT
 864 #
 865 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait
 866 #     instead.
 867 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 868 #
 869 AC_DEFUN([LC_INODE_DIO_WAIT], [
 870 LB_CHECK_COMPILE([if 'inode->i_alloc_sem' is killed and use inode_dio_wait],
 871 inode_dio_wait, [
 872         #include <linux/fs.h>
 873 ],[
 874         inode_dio_wait((struct inode *)0);
 875 ],[
 876         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 877                 [inode->i_alloc_sem is killed and use inode_dio_wait])
 878 ])
 879 ]) # LC_INODE_DIO_WAIT
 880
 881 #
 882 # LC_IOP_GET_ACL
 883 #
 884 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 885 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 886 #
 887 AC_DEFUN([LC_IOP_GET_ACL], [
 888 LB_CHECK_COMPILE([if 'inode_operations' has '.get_acl' member function],
 889 inode_ops_get_acl, [
 890         #include <linux/fs.h>
 891 ],[
 892         struct inode_operations iop;
 893         iop.get_acl = NULL;
 894 ],[
 895         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 896                 [inode_operations has .get_acl member function])
 897 ])
 898 ]) # LC_IOP_GET_ACL
 899
 900 #
 901 # LC_FILE_LLSEEK_SIZE
 902 #
 903 # 3.1 introduced generic_file_llseek_size()
 904 #
 905 AC_DEFUN([LC_FILE_LLSEEK_SIZE], [
 906 LB_CHECK_EXPORT([generic_file_llseek_size], [fs/read_write.c],
 907         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 908                 [generic_file_llseek_size is exported by the kernel])])
 909 ]) # LC_FILE_LLSEEK_SIZE
 910
 911 #
 912 # LC_RADIX_EXCEPTION_ENTRY
 913 # 3.1 adds radix_tree_exception_entry.
 914 #
 915 AC_DEFUN([LC_RADIX_EXCEPTION_ENTRY], [
 916 LB_CHECK_COMPILE([radix_tree_exceptional_entry exist],
 917 radix_tree_exceptional_entry, [
 918         #include <linux/radix-tree.h>
 919 ],[
 920         radix_tree_exceptional_entry(NULL);
 921 ],[
 922         AC_DEFINE(HAVE_RADIX_EXCEPTION_ENTRY, 1,
 923                 [radix_tree_exceptional_entry exist])
 924 ])
 925 ]) # LC_RADIX_EXCEPTION_ENTRY
 926
 927 #
 928 # LC_HAVE_PROTECT_I_NLINK
 929 #
 930 # 3.2 protects inode->i_nlink from direct modification
 931 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 932 # at the same time adds set_nlink(), so checks set_nlink() for it.
 933 #
 934 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK], [
 935 LB_CHECK_COMPILE([if 'inode->i_nlink' is protected from direct modification],
 936 inode_i_nlink_protected, [
 937         #include <linux/fs.h>
 938 ],[
 939         struct inode i;
 940         set_nlink(&i, 1);
 941 ],[
 942         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 943                 [inode->i_nlink is protected from direct modification])
 944 ])
 945 ]) # LC_HAVE_PROTECT_I_NLINK
 946
 947 #
 948 # 2.6.39 security_inode_init_security takes a 'struct qstr' parameter
 949 #
 950 # 3.2 security_inode_init_security takes a callback to set xattrs
 951 #
 952 AC_DEFUN([LC_HAVE_SECURITY_IINITSEC], [
 953 LB_CHECK_COMPILE([if security_inode_init_security takes a callback],
 954 security_inode_init_security_callback, [
 955         #include <linux/security.h>
 956 ],[
 957         security_inode_init_security(NULL, NULL, NULL, (const initxattrs)NULL, NULL);
 958 ],[
 959         AC_DEFINE(HAVE_SECURITY_IINITSEC_CALLBACK, 1,
 960                   [security_inode_init_security takes a callback to set xattrs])
 961 ],[
 962         LB_CHECK_COMPILE([if security_inode_init_security takes a 'struct qstr' parameter],
 963         security_inode_init_security_qstr, [
 964                 #include <linux/security.h>
 965         ],[
 966                 security_inode_init_security(NULL, NULL, (struct qstr *)NULL, NULL, NULL, NULL);
 967         ],[
 968                 AC_DEFINE(HAVE_SECURITY_IINITSEC_QSTR, 1,
 969                           [security_inode_init_security takes a 'struct qstr' parameter])
 970         ])
 971 ])
 972 ]) # LC_HAVE_SECURITY_IINITSEC
 973
 974 #
 975 # LC_HAVE_MIGRATE_HEADER
 976 #
 977 # 3.3 introduces migrate_mode.h and migratepage has 4 args
 978 #
 979 AC_DEFUN([LC_HAVE_MIGRATE_HEADER], [
 980 LB_CHECK_FILE([$LINUX/include/linux/migrate.h], [
 981         AC_DEFINE(HAVE_MIGRATE_H, 1,
 982                 [kernel has include/linux/migrate.h])
 983 ],[
 984         LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h], [
 985                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
 986                         [kernel has include/linux/migrate_mode.h])
 987         ])
 988 ])
 989 ]) # LC_HAVE_MIGRATE_HEADER
 990
 991 #
 992 # LC_MIGRATEPAGE_4ARGS
 993 #
 994 AC_DEFUN([LC_MIGRATEPAGE_4ARGS], [
 995 LB_CHECK_COMPILE([if 'address_space_operations.migratepage' has 4 args],
 996 address_space_ops_migratepage_4args, [
 997         #include <linux/fs.h>
 998 #ifdef HAVE_MIGRATE_H
 999         #include <linux/migrate.h>
1000 #elif defined(HAVE_MIGRATE_MODE_H)
1001         #include <linux/migrate_mode.h>
1002 #endif
1003 ],[
1004         struct address_space_operations aops;
1005         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
1006 ],[
1007         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
1008                 [address_space_operations.migratepage has 4 args])
1009 ])
1010 ]) # LC_MIGRATEPAGE_4ARGS
1011
1012 #
1013 # LC_SUPEROPS_USE_DENTRY
1014 #
1015 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1016 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1017 #
1018 AC_DEFUN([LC_SUPEROPS_USE_DENTRY], [
1019 tmp_flags="$EXTRA_KCFLAGS"
1020 EXTRA_KCFLAGS="-Werror"
1021 LB_CHECK_COMPILE([if 'super_operations' use 'dentry' as parameter],
1022 super_ops_dentry, [
1023         #include <linux/fs.h>
1024         int show_options(struct seq_file *seq, struct dentry *root) {
1025                 return 0;
1026         }
1027 ],[
1028         struct super_operations ops;
1029         ops.show_options = show_options;
1030 ],[
1031         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1032                 [super_operations use dentry as parameter])
1033 ])
1034 EXTRA_KCFLAGS="$tmp_flags"
1035 ]) # LC_SUPEROPS_USE_DENTRY
1036
1037 #
1038 # LC_INODEOPS_USE_UMODE_T
1039 #
1040 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1041 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1042 #
1043 AC_DEFUN([LC_INODEOPS_USE_UMODE_T], [
1044 tmp_flags="$EXTRA_KCFLAGS"
1045 EXTRA_KCFLAGS="-Werror"
1046 LB_CHECK_COMPILE([if 'inode_operations' use 'umode_t' as parameter],
1047 inode_ops_umode_t, [
1048         #include <linux/fs.h>
1049         #include <linux/types.h>
1050         int my_mknod(struct inode *dir, struct dentry *dchild,
1051                      umode_t mode, dev_t dev)
1052         {
1053                 return 0;
1054         }
1055 ],[
1056         struct inode_operations ops;
1057         ops.mknod = my_mknod;
1058 ],[
1059         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1060                 [inode_operations use umode_t as parameter])
1061 ])
1062 EXTRA_KCFLAGS="$tmp_flags"
1063 ]) # LC_INODEOPS_USE_UMODE_T
1064
1065 #
1066 # LC_KMAP_ATOMIC_HAS_1ARG
1067 #
1068 # 3.4 kmap_atomic removes second argument
1069 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1070 #
1071 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG], [
1072 LB_CHECK_COMPILE([if 'kmap_atomic' has only 1 argument],
1073 kmap_atomic_1arg, [
1074         #include <linux/highmem.h>
1075 ],[
1076         kmap_atomic(NULL);
1077 ],[
1078         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1079                 [have kmap_atomic has only 1 argument])
1080 ])
1081 ]) # LC_KMAP_ATOMIC_HAS_1ARG
1082
1083 #
1084 # LC_HAVE_D_MAKE_ROOT
1085 #
1086 # 3.4 converts d_alloc_root to d_make_root
1087 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1088 #
1089 AC_DEFUN([LC_HAVE_D_MAKE_ROOT], [
1090 LB_CHECK_COMPILE([if have 'd_make_root'],
1091 d_make_root, [
1092         #include <linux/fs.h>
1093 ],[
1094         d_make_root((struct inode *)NULL);
1095 ],[
1096         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1097                 [have d_make_root])
1098 ])
1099 ]) # LC_HAVE_D_MAKE_ROOT
1100
1101 #
1102 # LC_HAVE_CACHE_REGISTER
1103 #
1104 # 3.4 cache_register/cache_unregister are removed
1105 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1106 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1107 # are defined, but not exported.
1108 # 3.3 cache_register_net/cache_unregister_net are
1109 # exported and replacing cache_register/cache_unregister in 3.4
1110 #
1111 AC_DEFUN([LC_HAVE_CACHE_REGISTER], [
1112 LB_CHECK_COMPILE([if have 'cache_register'],
1113 cache_register, [
1114         #include <linux/sunrpc/cache.h>
1115 ],[
1116         cache_register(NULL);
1117 ],[
1118         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1119                 [have cache_register])
1120 ])
1121 ]) # LC_HAVE_CACHE_REGISTER
1122
1123 #
1124 # LC_HAVE_CLEAR_INODE
1125 #
1126 # 3.5 renames end_writeback() back to clear_inode()...
1127 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1128 #
1129 AC_DEFUN([LC_HAVE_CLEAR_INODE], [
1130 LB_CHECK_COMPILE([if have 'clear_inode'],
1131 clear_inode, [
1132         #include <linux/fs.h>
1133 ],[
1134         clear_inode((struct inode *)NULL);
1135 ],[
1136         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1137                 [have clear_inode])
1138 ])
1139 ]) # LC_HAVE_CLEAR_INODE
1140
1141 #
1142 # LC_HAVE_ENCODE_FH_PARENT
1143 #
1144 # 3.5 encode_fh has parent inode passed in directly
1145 # see kernel commit b0b0382b
1146 #
1147 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT], [
1148 tmp_flags="$EXTRA_KCFLAGS"
1149 EXTRA_KCFLAGS="-Werror"
1150 LB_CHECK_COMPILE([if 'encode_fh' have parent inode as parameter],
1151 encode_fh_parent_inode, [
1152         #include <linux/exportfs.h>
1153         #include <linux/fs.h>
1154         #include <linux/types.h>
1155         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1156         {
1157                 return 0;
1158         }
1159 ],[
1160         struct export_operations exp_op;
1161         exp_op.encode_fh = ll_encode_fh;
1162 ],[
1163         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1164                 [have parent inode as parameter])
1165 ])
1166 EXTRA_KCFLAGS="$tmp_flags"
1167 ]) # LC_HAVE_ENCODE_FH_PARENT
1168
1169 #
1170 # LC_FILE_LLSEEK_SIZE_5ARG
1171 #
1172 # 3.5 has generic_file_llseek_size with 5 args
1173 #
1174 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG], [
1175 LB_CHECK_COMPILE([if Linux kernel has 'generic_file_llseek_size' with 5 args],
1176 generic_file_llseek_size_5args, [
1177         #include <linux/fs.h>
1178 ],[
1179         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1180 ], [
1181         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1182                 [kernel has generic_file_llseek_size with 5 args])
1183 ])
1184 ]) # LC_FILE_LLSEEK_SIZE_5ARG
1185
1186 #
1187 # LC_LLITE_DATA_IS_LIST
1188 #
1189 # 3.6 switch i_dentry/d_alias from list to hlist
1190 #
1191 # In the upstream kernels d_alias first changes
1192 # to a hlist and then in later version, 3.11, gets
1193 # moved to the union d_u. Due to some distros having
1194 # d_alias in the d_u union as a struct list, which
1195 # has never existed upstream stream, we can't test
1196 # if d_alias is a list or hlist directly. If ever
1197 # i_dentry and d_alias even up different combos then
1198 # the build will fail. In that case then we will need
1199 # to separate out the i_dentry and d_alias test below.
1200 #
1201 AC_DEFUN([LC_DATA_FOR_LLITE_IS_LIST], [
1202 tmp_flags="$EXTRA_KCFLAGS"
1203 EXTRA_KCFLAGS="-Werror"
1204 LB_CHECK_COMPILE([if 'i_dentry/d_alias' uses 'list'],
1205 i_dentry_d_alias_list, [
1206         #include <linux/fs.h>
1207 ],[
1208         struct inode inode;
1209         INIT_LIST_HEAD(&inode.i_dentry);
1210 ],[
1211         AC_DEFINE(DATA_FOR_LLITE_IS_LIST, 1,
1212                 [both i_dentry/d_alias uses list])
1213 ])
1214 EXTRA_KCFLAGS="$tmp_flags"
1215 ]) # LC_DATA_FOR_LLITE_IS_LIST
1216
1217 #
1218 # LC_DENTRY_OPEN_USE_PATH
1219 #
1220 # 3.6 dentry_open uses struct path as first argument
1221 # see kernel commit 765927b2
1222 #
1223 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH], [
1224 tmp_flags="$EXTRA_KCFLAGS"
1225 EXTRA_KCFLAGS="-Werror"
1226 LB_CHECK_COMPILE([if 'dentry_open' uses 'struct path' as first argument],
1227 dentry_open_path, [
1228         #include <linux/fs.h>
1229         #include <linux/path.h>
1230 ],[
1231         struct path path;
1232         dentry_open(&path, 0, NULL);
1233 ],[
1234         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1235                 [dentry_open uses struct path as first argument])
1236 ])
1237 EXTRA_KCFLAGS="$tmp_flags"
1238 ]) # LC_DENTRY_OPEN_USE_PATH
1239
1240 #
1241 # LC_HAVE_IOP_ATOMIC_OPEN
1242 #
1243 # 3.6 vfs adds iop->atomic_open
1244 #
1245 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN], [
1246 LB_CHECK_COMPILE([if 'iop' has 'atomic_open'],
1247 inode_ops_atomic_open, [
1248         #include <linux/fs.h>
1249 ],[
1250         struct inode_operations iop;
1251         iop.atomic_open = NULL;
1252 ],[
1253         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1254                 [have iop atomic_open])
1255 ])
1256 ]) # LC_HAVE_IOP_ATOMIC_OPEN
1257
1258 #
1259 # LC_HAVE_SB_START_WRITE
1260 #
1261 # RHEL6 2.6.32, 3.6 or newer support wrapped FS freeze functions
1262 #
1263 AC_DEFUN([LC_HAVE_SB_START_WRITE], [
1264 LB_CHECK_COMPILE([if kernel supports wrapped FS freeze functions],
1265 sb_start_write, [
1266         #include <linux/fs.h>
1267 ],[
1268         sb_start_write(NULL);
1269 ],[
1270         AC_DEFINE(HAVE_SB_START_WRITE, 1,
1271                 [kernel supports wrapped FS freeze functions])
1272 ])
1273 ]) # LC_HAVE_SB_START_WRITE
1274
1275 #
1276 # LC_HAVE_POSIXACL_USER_NS
1277 #
1278 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1279 #
1280 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS], [
1281 LB_CHECK_COMPILE([if 'posix_acl_to_xattr' takes 'struct user_namespace'],
1282 posix_acl_to_xattr_user_namespace, [
1283         #include <linux/fs.h>
1284         #include <linux/posix_acl_xattr.h>
1285 ],[
1286         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1287 ],[
1288         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1289                 [posix_acl_to_xattr takes struct user_namespace])
1290 ])
1291 ]) # LC_HAVE_POSIXACL_USER_NS
1292
1293 #
1294 # LC_HAVE_FILE_F_INODE
1295 #
1296 # 3.8 struct file has new member f_inode
1297 #
1298 AC_DEFUN([LC_HAVE_FILE_F_INODE], [
1299 LB_CHECK_COMPILE([if 'struct file' has member 'f_inode'],
1300 file_f_inode, [
1301         #include <linux/fs.h>
1302 ],[
1303         ((struct file *)0)->f_inode = NULL;
1304 ],[
1305         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1306                 [struct file has member f_inode])
1307 ])
1308 ]) # LC_HAVE_FILE_F_INODE
1309
1310 #
1311 # LC_HAVE_FILE_INODE
1312 #
1313 # 3.8 has introduced inline function file_inode
1314 #
1315 AC_DEFUN([LC_HAVE_FILE_INODE], [
1316 LB_CHECK_COMPILE([if file_inode() exists],
1317 file_inode, [
1318         #include <linux/fs.h>
1319 ],[
1320         file_inode(NULL);
1321 ],[
1322         AC_DEFINE(HAVE_FILE_INODE, 1,
1323                 [file_inode() has been defined])
1324 ])
1325 ]) # LC_HAVE_FILE_INODE
1326
1327 #
1328 # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1329 #
1330 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS], [
1331 LB_CHECK_COMPILE([if 'sunrpc_cache_pipe_upcall' takes 3 args],
1332 sunrpc_cache_pipe_upcall_3args, [
1333         #include <linux/sunrpc/cache.h>
1334 ],[
1335         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1336 ],[
1337         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1338                 [sunrpc_cache_pipe_upcall takes 3 args])
1339 ])
1340 ]) # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1341
1342 #
1343 # LC_HAVE_HLIST_FOR_EACH_3ARG
1344 #
1345 # 3.9 uses hlist_for_each_entry with 3 args
1346 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1347 #
1348 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG], [
1349 LB_CHECK_COMPILE([if 'hlist_for_each_entry' has 3 args],
1350 hlist_for_each_entry_3args, [
1351         #include <linux/list.h>
1352         #include <linux/fs.h>
1353 ],[
1354         struct hlist_head *head = NULL;
1355         struct inode *inode;
1356
1357         hlist_for_each_entry(inode, head, i_hash) {
1358                 continue;
1359         }
1360 ],[
1361         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1,
1362                 [hlist_for_each_entry has 3 args])
1363 ])
1364 ]) # LC_HAVE_HLIST_FOR_EACH_3ARG
1365
1366 #
1367 # LC_HAVE_BIO_END_SECTOR
1368 #
1369 # 3.9 introduces bio_end_sector macro
1370 # f73a1c7d117d07a96d89475066188a2b79e53c48
1371 #
1372 AC_DEFUN([LC_HAVE_BIO_END_SECTOR], [
1373 LB_CHECK_COMPILE([if 'bio_end_sector' is defined],
1374 bio_end_sector, [
1375         #include <linux/bio.h>
1376 ],[
1377         struct bio bio;
1378
1379         bio_end_sector(&bio);
1380 ],[
1381         AC_DEFINE(HAVE_BIO_END_SECTOR, 1,
1382                   [bio_end_sector is defined])
1383 ])
1384 ]) # LC_HAVE_BIO_END_SECTOR
1385
1386 #
1387 # 3.9 created is_sxid
1388 #
1389 AC_DEFUN([LC_HAVE_IS_SXID], [
1390 LB_CHECK_COMPILE([if 'is_sxid' is defined],
1391 is_sxid, [
1392         #include <linux/fs.h>
1393 ],[
1394         struct inode inode;
1395
1396         is_sxid(inode.i_mode);
1397 ],[
1398         AC_DEFINE(HAVE_IS_SXID, 1, [is_sxid is defined])
1399 ])
1400 ]) # LC_HAVE_IS_SXID
1401
1402 #
1403 # LC_HAVE_REMOVE_PROC_SUBTREE
1404 #
1405 # 3.10 introduced remove_proc_subtree
1406 #
1407 AC_DEFUN([LC_HAVE_REMOVE_PROC_SUBTREE], [
1408 LB_CHECK_COMPILE([if 'remove_proc_subtree' is defined],
1409 remove_proc_subtree, [
1410         #include <linux/proc_fs.h>
1411 ],[
1412         remove_proc_subtree(NULL, NULL);
1413 ], [
1414         AC_DEFINE(HAVE_REMOVE_PROC_SUBTREE, 1,
1415                   [remove_proc_subtree is defined])
1416 ])
1417 ]) # LC_HAVE_REMOVE_PROC_SUBTREE
1418
1419 #
1420 # LC_HAVE_PROC_REMOVE
1421 #
1422 # 3.10 introduced proc_remove
1423 #
1424 AC_DEFUN([LC_HAVE_PROC_REMOVE], [
1425 LB_CHECK_COMPILE([if 'proc_remove' is defined],
1426 proc_remove, [
1427         #include <linux/proc_fs.h>
1428 ],[
1429         proc_remove(NULL);
1430 ], [
1431         AC_DEFINE(HAVE_PROC_REMOVE, 1,
1432                   [proc_remove is defined])
1433 ])
1434 ]) # LC_HAVE_PROC_REMOVE
1435
1436 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
1437 LB_CHECK_COMPILE([if get_projid exists],
1438 get_projid, [
1439         #include <linux/quota.h>
1440 ],[
1441         struct dquot_operations ops;
1442
1443         ops.get_projid(NULL, NULL);
1444 ],[
1445         AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
1446                 [get_projid function exists])
1447 ])
1448 ]) # LC_HAVE_PROJECT_QUOTA
1449
1450
1451 #
1452 # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1453 #
1454 # 3.10 introduced security_dentry_init_security()
1455 #
1456 AC_DEFUN([LC_HAVE_SECURITY_DENTRY_INIT_SECURITY], [
1457 LB_CHECK_COMPILE([if 'security_dentry_init_security' is defined],
1458 security_dentry_init_security, [
1459         #include <linux/security.h>
1460 ],[
1461         security_dentry_init_security(NULL, 0, NULL, NULL, NULL);
1462 ],[
1463         AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_SECURITY, 1,
1464                 [security_dentry_init_security' is defined])
1465 ])
1466 ]) # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1467
1468 #
1469 # LC_INVALIDATE_RANGE
1470 #
1471 # 3.11 invalidatepage requires the length of the range to invalidate
1472 #
1473 AC_DEFUN([LC_INVALIDATE_RANGE], [
1474 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
1475 address_space_ops_invalidatepage_3args, [
1476         #include <linux/fs.h>
1477 ],[
1478         struct address_space_operations a_ops;
1479         a_ops.invalidatepage(NULL, 0, 0);
1480 ],[
1481         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
1482                 [address_space_operations.invalidatepage needs 3 arguments])
1483 ])
1484 ]) # LC_INVALIDATE_RANGE
1485
1486 #
1487 # LC_HAVE_DIR_CONTEXT
1488 #
1489 # 3.11 readdir now takes the new struct dir_context
1490 #
1491 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
1492 LB_CHECK_COMPILE([if 'dir_context' exist],
1493 dir_context, [
1494         #include <linux/fs.h>
1495 ],[
1496         struct dir_context ctx;
1497         ctx.pos = 0;
1498 ],[
1499         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
1500                 [dir_context exist])
1501 ])
1502 ]) # LC_HAVE_DIR_CONTEXT
1503
1504 #
1505 # LC_D_COMPARE_5ARGS
1506 #
1507 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1508 #
1509 AC_DEFUN([LC_D_COMPARE_5ARGS], [
1510 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
1511 d_compare_5args, [
1512         #include <linux/dcache.h>
1513 ],[
1514         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1515 ],[
1516         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1517                 [d_compare need 5 arguments])
1518 ])
1519 ]) # LC_D_COMPARE_5ARGS
1520
1521 #
1522 # LC_HAVE_DCOUNT
1523 #
1524 # 3.11 need to access d_count to get dentry reference count
1525 #
1526 AC_DEFUN([LC_HAVE_DCOUNT], [
1527 LB_CHECK_COMPILE([if 'd_count' exist],
1528 d_count, [
1529         #include <linux/dcache.h>
1530 ],[
1531         struct dentry de;
1532         d_count(&de);
1533 ],[
1534         AC_DEFINE(HAVE_D_COUNT, 1,
1535                 [d_count exist])
1536 ])
1537 ]) # LC_HAVE_DCOUNT
1538
1539 #
1540 # LC_PID_NS_FOR_CHILDREN
1541 #
1542 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
1543 #
1544 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
1545 LB_CHECK_COMPILE([if 'struct nsproxy' has 'pid_ns_for_children'],
1546 pid_ns_for_children, [
1547         #include <linux/nsproxy.h>
1548 ],[
1549         struct nsproxy ns;
1550         ns.pid_ns_for_children = NULL;
1551 ],[
1552         AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
1553                   ['struct nsproxy' has 'pid_ns_for_children'])
1554 ])
1555 ]) # LC_PID_NS_FOR_CHILDREN
1556
1557 #
1558 # LC_OLDSIZE_TRUNCATE_PAGECACHE
1559 #
1560 # 3.12 truncate_pagecache without oldsize parameter
1561 #
1562 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
1563 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
1564 truncate_pagecache_old_size, [
1565         #include <linux/mm.h>
1566 ],[
1567         truncate_pagecache(NULL, 0, 0);
1568 ],[
1569         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
1570                 [with oldsize])
1571 ])
1572 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
1573
1574 #
1575 # LC_HAVE_DENTRY_D_U_D_ALIAS
1576 #
1577 # 3.11 kernel moved d_alias to the union d_u in struct dentry
1578 #
1579 # Some distros move d_alias to d_u but it is still a struct list
1580 #
1581 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
1582 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
1583         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
1584         d_alias, [
1585                 #include <linux/list.h>
1586                 #include <linux/dcache.h>
1587         ],[
1588                 struct dentry de;
1589                 INIT_LIST_HEAD(&de.d_u.d_alias);
1590         ],[
1591                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1592                         [list dentry.d_u.d_alias exist])
1593         ])
1594 ],[
1595         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
1596         d_alias, [
1597                 #include <linux/list.h>
1598                 #include <linux/dcache.h>
1599         ],[
1600                 struct dentry de;
1601                 INIT_HLIST_NODE(&de.d_u.d_alias);
1602         ],[
1603                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1604                         [hlist dentry.d_u.d_alias exist])
1605         ])
1606 ])
1607 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
1608
1609 #
1610 # LC_HAVE_DENTRY_D_CHILD
1611 #
1612 # 3.11 kernel d_child has been moved out of the union d_u
1613 # in struct dentry
1614 #
1615 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
1616 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
1617 d_child, [
1618         #include <linux/list.h>
1619         #include <linux/dcache.h>
1620 ],[
1621         struct dentry de;
1622         INIT_LIST_HEAD(&de.d_child);
1623 ],[
1624         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
1625                 [dentry.d_child exist])
1626 ])
1627 ]) # LC_HAVE_DENTRY_D_CHILD
1628
1629 #
1630 # LC_KIOCB_KI_LEFT
1631 #
1632 # 3.12 ki_left removed from struct kiocb
1633 #
1634 AC_DEFUN([LC_KIOCB_KI_LEFT], [
1635 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
1636 kiocb_ki_left, [
1637         #include <linux/aio.h>
1638 ],[
1639         ((struct kiocb*)0)->ki_left = 0;
1640 ],[
1641         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
1642                 [ki_left exist])
1643 ])
1644 ]) # LC_KIOCB_KI_LEFT
1645
1646 #
1647 # LC_VFS_RENAME_5ARGS
1648 #
1649 # 3.13 has vfs_rename with 5 args
1650 #
1651 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
1652 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
1653 vfs_rename_5args, [
1654         #include <linux/fs.h>
1655 ],[
1656         vfs_rename(NULL, NULL, NULL, NULL, NULL);
1657 ], [
1658         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
1659                 [kernel has vfs_rename with 5 args])
1660 ])
1661 ]) # LC_VFS_RENAME_5ARGS
1662
1663 #
1664 # LC_VFS_UNLINK_3ARGS
1665 #
1666 # 3.13 has vfs_unlink with 3 args
1667 #
1668 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
1669 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
1670 vfs_unlink_3args, [
1671         #include <linux/fs.h>
1672 ],[
1673         vfs_unlink(NULL, NULL, NULL);
1674 ], [
1675         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
1676                 [kernel has vfs_unlink with 3 args])
1677 ])
1678 ]) # LC_VFS_UNLINK_3ARGS
1679
1680 #
1681 # LC_HAVE_BVEC_ITER
1682 #
1683 # 3.14 move some of its data in struct bio into the new
1684 # struct bvec_iter
1685 #
1686 AC_DEFUN([LC_HAVE_BVEC_ITER], [
1687 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
1688 have_bvec_iter, [
1689         #include <linux/bio.h>
1690 ],[
1691         struct bvec_iter iter;
1692         iter.bi_bvec_done = 0;
1693 ], [
1694         AC_DEFINE(HAVE_BVEC_ITER, 1,
1695                 [kernel has struct bvec_iter])
1696 ])
1697 ]) # LC_HAVE_BVEC_ITER
1698
1699 #
1700 # LC_IOP_SET_ACL
1701 #
1702 # 3.14 adds set_acl method to inode_operations
1703 # see kernel commit 893d46e443346370cd4ea81d9d35f72952c62a37
1704 #
1705 AC_DEFUN([LC_IOP_SET_ACL], [
1706 LB_CHECK_COMPILE([if 'inode_operations' has '.set_acl' member function],
1707 inode_ops_set_acl, [
1708         #include <linux/fs.h>
1709 ],[
1710         struct inode_operations iop;
1711         iop.set_acl = NULL;
1712 ],[
1713         AC_DEFINE(HAVE_IOP_SET_ACL, 1,
1714                 [inode_operations has .set_acl member function])
1715 ])
1716 ]) # LC_IOP_SET_ACL
1717
1718 #
1719 # LC_HAVE_BI_CNT
1720 #
1721 # 4.4 redefined bi_cnt as __bi_cnt
1722 #
1723 AC_DEFUN([LC_HAVE_BI_CNT], [
1724 LB_CHECK_COMPILE([if Linux kernel has bi_cnt in struct bio],
1725 have_bi_cnt, [
1726         #include <asm/atomic.h>
1727         #include <linux/bio.h>
1728 ],[
1729         struct bio bio;
1730         int cnt;
1731         cnt = atomic_read(&bio.bi_cnt);
1732 ], [
1733         AC_DEFINE(HAVE_BI_CNT, 1,
1734                 [struct bio has bi_cnt])
1735 ])
1736 ]) # LC_HAVE_BI_CNT
1737
1738 #
1739 # LC_HAVE_TRUNCATE_IPAGE_FINAL
1740 #
1741 # 3.14 bring truncate_inode_pages_final for evict_inode
1742 #
1743 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
1744 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
1745 truncate_ipages_final, [
1746         #include <linux/mm.h>
1747 ],[
1748         truncate_inode_pages_final(NULL);
1749 ], [
1750         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
1751                 [kernel has truncate_inode_pages_final])
1752 ])
1753 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
1754
1755 #
1756 # LC_IOPS_RENAME_WITH_FLAGS
1757 #
1758 # 3.14 has inode_operations->rename with 5 args
1759 # commit 520c8b16505236fc82daa352e6c5e73cd9870cff
1760 #
1761 AC_DEFUN([LC_IOPS_RENAME_WITH_FLAGS], [
1762 LB_CHECK_COMPILE([if 'inode_operations->rename' taken flags as argument],
1763 iops_rename_with_flags, [
1764         #include <linux/fs.h>
1765 ],[
1766         struct inode *i1 = NULL, *i2 = NULL;
1767         struct dentry *d1 = NULL, *d2 = NULL;
1768         int rc;
1769         rc = ((struct inode_operations *)0)->rename(i1, d1, i2, d2, 0);
1770 ], [
1771         AC_DEFINE(HAVE_IOPS_RENAME_WITH_FLAGS, 1,
1772                 [inode_operations->rename need flags as argument])
1773 ])
1774 ]) # LC_IOPS_RENAME_WITH_FLAGS
1775
1776 #
1777 # LC_VFS_RENAME_6ARGS
1778 #
1779 # 3.15 has vfs_rename with 6 args
1780 #
1781 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
1782 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
1783 vfs_rename_6args, [
1784         #include <linux/fs.h>
1785 ],[
1786         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
1787 ], [
1788         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
1789                 [kernel has vfs_rename with 6 args])
1790 ])
1791 ]) # LC_VFS_RENAME_6ARGS
1792
1793 #
1794 # LC_DIRECTIO_USE_ITER
1795 #
1796 # 3.16 kernel changes direct IO to use iov_iter
1797 #
1798 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
1799 LB_CHECK_COMPILE([if direct IO uses iov_iter],
1800 direct_io_iter, [
1801         #include <linux/fs.h>
1802 ],[
1803         struct address_space_operations ops;
1804         struct iov_iter *iter = NULL;
1805         loff_t offset = 0;
1806
1807         ops.direct_IO(0, NULL, iter, offset);
1808 ],[
1809         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
1810                 [direct IO uses iov_iter])
1811 ])
1812 ]) # LC_DIRECTIO_USE_ITER
1813
1814 #
1815 # LC_HAVE_IOV_ITER_INIT_DIRECTION
1816 #
1817 #
1818 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
1819 #      changed iov_iter_init api to start accepting a tag
1820 #      that defines if its a read or write operation
1821 #
1822 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
1823 tmp_flags="$EXTRA_KCFLAGS"
1824 EXTRA_KCFLAGS="-Werror"
1825 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
1826 iter_init, [
1827         #include <linux/uio.h>
1828         #include <linux/fs.h>
1829 ],[
1830         const struct iovec *iov = NULL;
1831
1832         iov_iter_init(NULL, READ, iov, 1, 0);
1833 ],[
1834         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
1835                 [iov_iter_init handles directional tag])
1836 ])
1837 EXTRA_KCFLAGS="$tmp_flags"
1838 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
1839
1840 #
1841 # LC_HAVE_IOV_ITER_TRUNCATE
1842 #
1843 #
1844 # 3.16 introduces a new API iov_iter_truncate()
1845 #
1846 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
1847 tmp_flags="$EXTRA_KCFLAGS"
1848 EXTRA_KCFLAGS="-Werror"
1849 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
1850 iter_truncate, [
1851         #include <linux/uio.h>
1852         #include <linux/fs.h>
1853 ],[
1854         struct iov_iter *i = NULL;
1855
1856         iov_iter_truncate(i, 0);
1857 ],[
1858         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
1859 ])
1860 EXTRA_KCFLAGS="$tmp_flags"
1861 ]) # LC_HAVE_IOV_ITER_TRUNCATE
1862
1863 #
1864 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1865 #
1866 # 3.16 introduces [read|write]_iter to struct file_operations
1867 #
1868 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1869 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
1870 file_function_iter, [
1871         #include <linux/fs.h>
1872 ],[
1873         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
1874         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
1875 ],[
1876         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
1877                 [file_operations.[read|write]_iter functions exist])
1878 ])
1879 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1880
1881 #
1882 # LC_KEY_MATCH_DATA
1883 #
1884 # 3.17  replaces key_type::match with match_preparse
1885 #       and has new struct key_match_data
1886 #
1887 AC_DEFUN([LC_KEY_MATCH_DATA], [
1888 LB_CHECK_COMPILE([if struct key_match field exist],
1889 key_match, [
1890         #include <linux/key-type.h>
1891 ],[
1892         struct key_match_data data;
1893 ],[
1894         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
1895                 [struct key_match_data exist])
1896 ])
1897 ]) # LC_KEY_MATCH_DATA
1898
1899 #
1900 # LC_NFS_FILLDIR_USE_CTX
1901 #
1902 # 3.18 kernel moved from void cookie to struct dir_context
1903 #
1904 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
1905 tmp_flags="$EXTRA_KCFLAGS"
1906 EXTRA_KCFLAGS="-Werror"
1907 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
1908 filldir_ctx, [
1909         #include <linux/fs.h>
1910 ],[
1911         int filldir(struct dir_context *ctx, const char* name,
1912                     int i, loff_t off, u64 tmp, unsigned temp)
1913         {
1914                 return 0;
1915         }
1916
1917         struct dir_context ctx = {
1918                 .actor = filldir,
1919         };
1920
1921         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
1922 ],[
1923         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
1924                 [filldir_t needs struct dir_context as argument])
1925 ])
1926 EXTRA_KCFLAGS="$tmp_flags"
1927 ]) # LC_NFS_FILLDIR_USE_CTX
1928
1929 #
1930 # LC_PERCPU_COUNTER_INIT
1931 #
1932 # 3.18  For kernels 3.18 and after percpu_counter_init starts
1933 #       to pass a GFP_* memory allocation flag for internal
1934 #       memory allocation purposes.
1935 #
1936 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
1937 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
1938 percpu_counter_init, [
1939         #include <linux/percpu_counter.h>
1940 ],[
1941         percpu_counter_init(NULL, 0, GFP_KERNEL);
1942 ],[
1943         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
1944                 [percpu_counter_init uses GFP_* flag])
1945 ])
1946 ]) # LC_PERCPU_COUNTER_INIT
1947
1948 #
1949 # LC_KIOCB_HAS_NBYTES
1950 #
1951 # 3.19 kernel removed ki_nbytes from struct kiocb
1952 #
1953 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
1954 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
1955 ki_nbytes, [
1956         #include <linux/fs.h>
1957 ],[
1958         struct kiocb iocb;
1959
1960         iocb.ki_nbytes = 0;
1961 ],[
1962         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
1963 ])
1964 ]) # LC_KIOCB_HAS_NBYTES
1965
1966 #
1967 # LC_HAVE_DQUOT_QC_DQBLK
1968 #
1969 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
1970 # Added in commit 14bf61ffe
1971 #
1972 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
1973 tmp_flags="$EXTRA_KCFLAGS"
1974 EXTRA_KCFLAGS="-Werror"
1975 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk],
1976 qc_dqblk, [
1977         #include <linux/fs.h>
1978         #include <linux/quota.h>
1979 ],[
1980         ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
1981 ],[
1982         AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
1983                 [quotactl_ops.set_dqblk takes struct qc_dqblk])
1984         AC_DEFINE(HAVE_DQUOT_KQID, 1,
1985                 [quotactl_ops.set_dqblk takes struct kqid])
1986 ])
1987 EXTRA_KCFLAGS="$tmp_flags"
1988 ]) # LC_HAVE_DQUOT_QC_DQBLK
1989
1990 #
1991 # LC_BACKING_DEV_INFO_REMOVAL
1992 #
1993 # 3.20 kernel removed backing_dev_info from address_space
1994 #
1995 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
1996 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
1997 backing_dev_info, [
1998         #include <linux/fs.h>
1999 ],[
2000         struct address_space mapping;
2001
2002         mapping.backing_dev_info = NULL;
2003 ],[
2004         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
2005 ])
2006 ]) # LC_BACKING_DEV_INFO_REMOVAL
2007
2008 #
2009 # LC_HAVE_BDI_CAP_MAP_COPY
2010 #
2011 # 3.20  removed mmap handling for backing devices since
2012 #       it breaks on non-MMU systems. See kernel commit
2013 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
2014 #
2015 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
2016 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
2017 bdi_cap_map_copy, [
2018         #include <linux/backing-dev.h>
2019 ],[
2020         struct backing_dev_info info;
2021
2022         info.capabilities = BDI_CAP_MAP_COPY;
2023 ],[
2024         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
2025                 [BDI_CAP_MAP_COPY exist])
2026 ])
2027 ]) # LC_HAVE_BDI_CAP_MAP_COPY
2028
2029 #
2030 # LC_CANCEL_DIRTY_PAGE
2031 #
2032 # 4.0.0 kernel removed cancel_dirty_page
2033 #
2034 AC_DEFUN([LC_CANCEL_DIRTY_PAGE], [
2035 LB_CHECK_COMPILE([if cancel_dirty_page still exist],
2036 cancel_dirty_page, [
2037         #include <linux/mm.h>
2038 ],[
2039         cancel_dirty_page(NULL, PAGE_SIZE);
2040 ],[
2041         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
2042                 [cancel_dirty_page is still available])
2043 ])
2044 ]) # LC_CANCEL_DIRTY_PAGE
2045
2046 #
2047 # LC_IOV_ITER_RW
2048 #
2049 # 4.1 kernel has iov_iter_rw
2050 #
2051 AC_DEFUN([LC_IOV_ITER_RW], [
2052 LB_CHECK_COMPILE([if iov_iter_rw exist],
2053 iov_iter_rw, [
2054         #include <linux/fs.h>
2055         #include <linux/uio.h>
2056 ],[
2057         struct iov_iter *iter = NULL;
2058
2059         iov_iter_rw(iter);
2060 ],[
2061         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
2062                 [iov_iter_rw exist])
2063 ])
2064 ]) # LC_IOV_ITER_RW
2065
2066 #
2067 # LC_HAVE_SYNC_READ_WRITE
2068 #
2069 # 4.1 new_sync_[read|write] no longer exported
2070 #
2071 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
2072 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
2073         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
2074                         [new_sync_[read|write] is exported by the kernel])])
2075 ]) # LC_HAVE_SYNC_READ_WRITE
2076
2077 #
2078 # LC_NEW_CANCEL_DIRTY_PAGE
2079 #
2080 # 4.2 kernel has new cancel_dirty_page
2081 #
2082 AC_DEFUN([LC_NEW_CANCEL_DIRTY_PAGE], [
2083 LB_CHECK_COMPILE([if cancel_dirty_page with one argument exist],
2084 new_cancel_dirty_page, [
2085         #include <linux/mm.h>
2086 ],[
2087         cancel_dirty_page(NULL);
2088 ],[
2089         AC_DEFINE(HAVE_NEW_CANCEL_DIRTY_PAGE, 1,
2090                 [cancel_dirty_page with one arguement is available])
2091 ])
2092 ]) # LC_NEW_CANCEL_DIRTY_PAGE
2093
2094 #
2095 # LC_SYMLINK_OPS_USE_NAMEIDATA
2096 #
2097 # For the 4.2+ kernels the file system internal symlink api no
2098 # longer uses struct nameidata as a argument
2099 #
2100 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
2101 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
2102 symlink_use_nameidata, [
2103         #include <linux/namei.h>
2104         #include <linux/fs.h>
2105 ],[
2106         struct nameidata *nd = NULL;
2107
2108         ((struct inode_operations *)0)->follow_link(NULL, nd);
2109         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
2110 ],[
2111         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
2112                 [symlink inode operations need struct nameidata argument])
2113 ])
2114 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
2115
2116 #
2117 # LC_BIO_ENDIO_USES_ONE_ARG
2118 #
2119 # 4.2 kernel bio_endio now only takes one argument
2120 #
2121 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
2122 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
2123 bio_endio, [
2124         #include <linux/bio.h>
2125 ],[
2126         bio_endio(NULL);
2127 ],[
2128         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
2129                 [bio_endio takes only one argument])
2130 ])
2131 ]) # LC_BIO_ENDIO_USES_ONE_ARG
2132
2133 #
2134 # LC_HAVE_LOOP_CTL_GET_FREE
2135 #
2136 # 4.x kernel have moved userspace APIs to
2137 # the separate directory and all of them
2138 # support LOOP_CTL_GET_FREE
2139 #
2140 AC_DEFUN([LC_HAVE_LOOP_CTL_GET_FREE], [
2141 LB_CHECK_FILE([$LINUX/include/linux/loop.h], [
2142         LB_CHECK_COMPILE([if have 'HAVE_LOOP_CTL_GET_FREE'],
2143         LOOP_CTL_GET_FREE, [
2144                 #include <linux/loop.h>
2145         ],[
2146                 int i;
2147
2148                 i = LOOP_CTL_GET_FREE;
2149         ],[
2150                 AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2151                         [LOOP_CTL_GET_FREE exist])
2152         ])
2153 ],[
2154         AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2155                 [kernel has LOOP_CTL_GET_FREE])
2156 ])
2157 ]) # LC_HAVE_LOOP_CTL_GET_FREE
2158
2159 #
2160 # LC_HAVE_CACHE_HEAD_HLIST
2161 #
2162 # 4.3 kernel swiched to hlist for cache_head
2163 #
2164 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
2165 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
2166 cache_head_has_hlist, [
2167         #include <linux/sunrpc/cache.h>
2168 ],[
2169         do {} while(sizeof(((struct cache_head *)0)->cache_list));
2170 ],[
2171         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
2172                 [cache_head has hlist cache_list])
2173 ])
2174 ]) # LC_HAVE_CACHE_HEAD_HLIST
2175
2176 #
2177 # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2178 #
2179 # Kernel version 4.3 commit e409de992e3ea3674393465f07cc71c948edd87a
2180 # simplified xattr_handler handling by passing in the handler pointer
2181 #
2182 AC_DEFUN([LC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
2183 tmp_flags="$EXTRA_KCFLAGS"
2184 EXTRA_KCFLAGS="-Werror"
2185 LB_CHECK_COMPILE([if 'struct xattr_handler' functions pass in handler pointer],
2186 xattr_handler_simplified, [
2187         #include <linux/xattr.h>
2188 ],[
2189         struct xattr_handler handler;
2190
2191         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, 0);
2192         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, 0, 0);
2193 ],[
2194         AC_DEFINE(HAVE_XATTR_HANDLER_SIMPLIFIED, 1, [handler pointer is parameter])
2195 ])
2196 EXTRA_KCFLAGS="$tmp_flags"
2197 ]) # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2198
2199 #
2200 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2201 #
2202 # 4.4 kernel have moved locks API users to
2203 # locks_lock_inode_wait()
2204 #
2205 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
2206 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
2207 locks_lock_file_wait, [
2208         #include <linux/fs.h>
2209 ],[
2210         locks_lock_file_wait(NULL, NULL);
2211 ],[
2212         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
2213                 [kernel has locks_lock_file_wait])
2214 ])
2215 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2216
2217 #
2218 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2219 #
2220 # 4.4 kernel merged type-specific data with the payload data for keys
2221 #
2222 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
2223 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
2224 key_payload_data_array, [
2225         #include <linux/key.h>
2226 ],[
2227         ((struct key *)0)->payload.data[0] = NULL;
2228 ],[
2229         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
2230 ])
2231 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2232
2233 #
2234 # LC_HAVE_FILE_DENTRY
2235 #
2236 # 4.5 adds wrapper file_dentry
2237 #
2238 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
2239 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
2240 file_dentry, [
2241         #include <linux/fs.h>
2242 ],[
2243         file_dentry(NULL);
2244 ], [
2245         AC_DEFINE(HAVE_FILE_DENTRY, 1,
2246                 [kernel has file_dentry])
2247 ])
2248 ]) # LC_HAVE_FILE_DENTRY
2249
2250 #
2251 # LC_HAVE_INODE_LOCK
2252 #
2253 # 4.5 introduced inode_lock
2254 #
2255 AC_DEFUN([LC_HAVE_INODE_LOCK], [
2256 LB_CHECK_COMPILE([if 'inode_lock' is defined],
2257 inode_lock, [
2258         #include <linux/fs.h>
2259 ],[
2260         inode_lock(NULL);
2261 ], [
2262         AC_DEFINE(HAVE_INODE_LOCK, 1,
2263                   [inode_lock is defined])
2264 ])
2265 ]) # LC_HAVE_INODE_LOCK
2266
2267 #
2268 # LC_HAVE_IOP_GET_LINK
2269 #
2270 # 4.5 vfs replaced iop->follow_link with
2271 # iop->get_link
2272 #
2273 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
2274 LB_CHECK_COMPILE([if 'iop' has 'get_link'],
2275 inode_ops_get_link, [
2276         #include <linux/fs.h>
2277 ],[
2278         struct inode_operations iop;
2279         iop.get_link = NULL;
2280 ],[
2281         AC_DEFINE(HAVE_IOP_GET_LINK, 1,
2282                 [have iop get_link])
2283 ])
2284 ]) # LC_HAVE_IOP_GET_LINK
2285
2286 #
2287 # LC_HAVE_IN_COMPAT_SYSCALL
2288 #
2289 # 4.6 renamed is_compat_task to in_compat_syscall
2290 #
2291 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
2292 LB_CHECK_COMPILE([if 'in_compat_syscall' is defined],
2293 in_compat_syscall, [
2294         #include <linux/compat.h>
2295 ],[
2296         in_compat_syscall();
2297 ],[
2298         AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1,
2299                 [have in_compat_syscall])
2300 ])
2301 ]) # LC_HAVE_IN_COMPAT_SYSCALL
2302
2303 #
2304 # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2305 #
2306 # Kernel version 4.6 commit b296821a7c42fa58baa17513b2b7b30ae66f3336
2307 # and commit 5930122683dff58f0846b0f0405b4bd598a3ba6a added inode parameter
2308 # to xattr_handler functions
2309 #
2310 AC_DEFUN([LC_HAVE_XATTR_HANDLER_INODE_PARAM], [
2311 tmp_flags="$EXTRA_KCFLAGS"
2312 EXTRA_KCFLAGS="-Werror"
2313 LB_CHECK_COMPILE([if 'struct xattr_handler' functions have inode parameter],
2314 xattr_handler_inode_param, [
2315         #include <linux/xattr.h>
2316 ],[
2317         const struct xattr_handler handler;
2318
2319         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, NULL, 0);
2320         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, NULL, 0, 0);
2321 ],[
2322         AC_DEFINE(HAVE_XATTR_HANDLER_INODE_PARAM, 1, [needs inode parameter])
2323 ])
2324 EXTRA_KCFLAGS="$tmp_flags"
2325 ]) # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2326
2327 #
2328 # LC_DIRECTIO_2ARGS
2329 #
2330 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2331 # direct-io: eliminate the offset argument to ->direct_IO
2332 #
2333 AC_DEFUN([LC_DIRECTIO_2ARGS], [
2334 LB_CHECK_COMPILE([if '->direct_IO()' taken 2 arguments],
2335 direct_io_2args, [
2336         #include <linux/fs.h>
2337 ],[
2338         struct address_space_operations ops;
2339         struct iov_iter *iter = NULL;
2340         struct kiocb *iocb = NULL;
2341         int rc;
2342         rc = ops.direct_IO(iocb, iter);
2343 ],[
2344         AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1,
2345                 [direct_IO need 2 arguments])
2346 ])
2347 ]) # LC_DIRECTIO_2ARGS
2348
2349 #
2350 # LC_GENERIC_WRITE_SYNC_2ARGS
2351 #
2352 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2353 # direct-io: eliminate the offset argument to ->direct_IO
2354 #
2355 AC_DEFUN([LC_GENERIC_WRITE_SYNC_2ARGS], [
2356 LB_CHECK_COMPILE([if 'generic_write_sync()' taken 2 arguments],
2357 generic_write_sync_2args, [
2358         #include <linux/fs.h>
2359 ],[
2360         struct kiocb *iocb = NULL;
2361         ssize_t rc;
2362         rc = generic_write_sync(iocb, 0);
2363 ],[
2364         AC_DEFINE(HAVE_GENERIC_WRITE_SYNC_2ARGS, 1,
2365                 [generic_write_sync need 2 arguments])
2366 ])
2367 ]) # LC_GENERIC_WRITE_SYNC_2ARGS
2368
2369 #
2370 # LC_HAVE_POSIX_ACL_VALID_USER_NS
2371 #
2372 # 4.8 posix_acl_valid takes struct user_namespace
2373 #
2374 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
2375 LB_CHECK_COMPILE([if 'posix_acl_valid' takes 'struct user_namespace'],
2376 posix_acl_valid, [
2377         #include <linux/fs.h>
2378         #include <linux/posix_acl.h>
2379 ],[
2380         posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
2381 ],[
2382         AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
2383                 [posix_acl_valid takes struct user_namespace])
2384 ])
2385 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
2386
2387 #
2388 # LC_D_COMPARE_4ARGS
2389 #
2390 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
2391 # get rid of 'parent' argument of ->d_compare()
2392 #
2393 AC_DEFUN([LC_D_COMPARE_4ARGS], [
2394 LB_CHECK_COMPILE([if 'd_compare' taken 4 arguments],
2395 d_compare_4args, [
2396         #include <linux/dcache.h>
2397 ],[
2398         ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
2399 ],[
2400         AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
2401                 [d_compare need 4 arguments])
2402 ])
2403 ]) # LC_D_COMPARE_4ARGS
2404
2405 #
2406 # LC_FULL_NAME_HASH_3ARGS
2407 #
2408 # Kernel version 4.8 commit 8387ff2577eb9ed245df9a39947f66976c6bcd02
2409 # vfs: make the string hashes salt the hash
2410 #
2411 AC_DEFUN([LC_FULL_NAME_HASH_3ARGS], [
2412 LB_CHECK_COMPILE([if 'full_name_hash' taken 3 arguments],
2413 full_name_hash_3args, [
2414         #include <linux/stringhash.h>
2415 ],[
2416         unsigned int hash;
2417         hash = full_name_hash(NULL,NULL,0);
2418 ],[
2419         AC_DEFINE(HAVE_FULL_NAME_HASH_3ARGS, 1,
2420                 [full_name_hash need 3 arguments])
2421 ])
2422 ]) # LC_FULL_NAME_HASH_3ARGS
2423
2424 #
2425 # LC_STRUCT_POSIX_ACL_XATTR
2426 #
2427 # Kernel version 4.8 commit 2211d5ba5c6c4e972ba6dbc912b2897425ea6621
2428 # posix_acl: xattr representation cleanups
2429 #
2430 AC_DEFUN([LC_STRUCT_POSIX_ACL_XATTR], [
2431 LB_CHECK_COMPILE([if 'struct posix_acl_xattr_{header,entry}' defined],
2432 struct_posix_acl_xattr, [
2433         #include <linux/fs.h>
2434         #include <linux/posix_acl_xattr.h>
2435 ],[
2436         struct posix_acl_xattr_header *h = NULL;
2437         struct posix_acl_xattr_entry  *e;
2438         e = (void *)(h + 1);
2439 ],[
2440         AC_DEFINE(HAVE_STRUCT_POSIX_ACL_XATTR, 1,
2441                 [struct posix_acl_xattr_{header,entry} defined])
2442 ])
2443 ]) # LC_STRUCT_POSIX_ACL_XATTR
2444
2445 #
2446 # LC_IOP_XATTR
2447 #
2448 # Kernel version 4.8 commit fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42
2449 # removed {get,set,remove}xattr inode operations
2450 #
2451 AC_DEFUN([LC_IOP_XATTR], [
2452 LB_CHECK_COMPILE([if 'inode_operations' has {get,set,remove}xattr members],
2453 inode_ops_xattr, [
2454         #include <linux/fs.h>
2455 ],[
2456         struct inode_operations iop;
2457         iop.setxattr = NULL;
2458         iop.getxattr = NULL;
2459         iop.removexattr = NULL;
2460 ],[
2461         AC_DEFINE(HAVE_IOP_XATTR, 1,
2462                 [inode_operations has {get,set,remove}xattr members])
2463 ])
2464 ]) # LC_IOP_XATTR
2465
2466 #
2467 # LC_GROUP_INFO_GID
2468 #
2469 # Kernel version 4.9 commit 81243eacfa400f5f7b89f4c2323d0de9982bb0fb
2470 # cred: simpler, 1D supplementary groups
2471 #
2472 AC_DEFUN([LC_GROUP_INFO_GID], [
2473 LB_CHECK_COMPILE([if 'struct group_info' has member 'gid'],
2474 group_info_gid, [
2475         #include <linux/cred.h>
2476 ],[
2477         kgid_t *p;
2478         p = ((struct group_info *)0)->gid;
2479 ],[
2480         AC_DEFINE(HAVE_GROUP_INFO_GID, 1,
2481                 [struct group_info has member gid])
2482 ])
2483 ]) # LC_GROUP_INFO_GID
2484
2485 #
2486 # LC_VFS_SETXATTR
2487 #
2488 # Kernel version 4.9 commit 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4
2489 # added __vfs_{get,set,remove}xattr helpers
2490 #
2491 AC_DEFUN([LC_VFS_SETXATTR], [
2492 LB_CHECK_COMPILE([if '__vfs_setxattr' helper is available],
2493 vfs_setxattr, [
2494         #include <linux/xattr.h>
2495 ],[
2496         __vfs_setxattr(NULL, NULL, NULL, NULL, 0, 0);
2497 ],[
2498         AC_DEFINE(HAVE_VFS_SETXATTR, 1,
2499                 ['__vfs_setxattr is available])
2500 ])
2501 ]) # LC_VFS_SETXATTR
2502
2503 #
2504 # LC_IOP_GENERIC_READLINK
2505 #
2506 # Kernel version 4.10 commit dfeef68862edd7d4bafe68ef7aeb5f658ef24bb5
2507 # removed generic_readlink from individual file systems
2508 #
2509 AC_DEFUN([LC_IOP_GENERIC_READLINK], [
2510 LB_CHECK_COMPILE([if 'generic_readlink' still exist],
2511 inode_ops_readlink, [
2512         #include <linux/fs.h>
2513 ],[
2514         struct inode_operations iop;
2515         iop.readlink = generic_readlink;
2516 ],[
2517         AC_DEFINE(HAVE_IOP_GENERIC_READLINK, 1,
2518                 [generic_readlink has been removed])
2519 ])
2520 ]) # LC_IOP_GENERIC_READLINK
2521
2522 #
2523 # LC_HAVE_VM_FAULT_ADDRESS
2524 #
2525 # Kernel version 4.10 commit 1a29d85eb0f19b7d8271923d8917d7b4f5540b3e
2526 # removed virtual_address field. Need to use address field instead
2527 #
2528 AC_DEFUN([LC_HAVE_VM_FAULT_ADDRESS], [
2529 LB_CHECK_COMPILE([if 'struct vm_fault' replaced virtual_address with address field],
2530 vm_fault_address, [
2531         #include <linux/mm.h>
2532 ],[
2533         struct vm_fault vmf;
2534         vmf.address = NULL;
2535 ],[
2536         AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
2537                 [virtual_address has been replaced by address field])
2538 ])
2539 ]) # LC_HAVE_VM_FAULT_ADDRESS
2540
2541 #
2542 # LC_INODEOPS_ENHANCED_GETATTR
2543 #
2544 # Kernel version 4.11 commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
2545 # expanded getattr to be able to get more stat information.
2546 #
2547 AC_DEFUN([LC_INODEOPS_ENHANCED_GETATTR], [
2548 LB_CHECK_COMPILE([if 'inode_operations' getattr member can gather advance stats],
2549 getattr_path, [
2550         #include <linux/fs.h>
2551 ],[
2552         struct path path;
2553
2554         ((struct inode_operations *)1)->getattr(&path, NULL, 0, 0);
2555 ],[
2556         AC_DEFINE(HAVE_INODEOPS_ENHANCED_GETATTR, 1,
2557                 [inode_operations .getattr member function can gather advance stats])
2558 ])
2559 ]) # LC_INODEOPS_ENHANCED_GETATTR
2560
2561 #
2562 # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2563 #
2564 # Kernel version 4.11 commit 11bac80004499ea59f361ef2a5516c84b6eab675
2565 # removed struct vm_area_struct as an argument for vm_operations since
2566 # in the same kernel version struct vma_area_struct was folded into
2567 # struct vm_fault.
2568 #
2569 AC_DEFUN([LC_VM_OPERATIONS_REMOVE_VMF_ARG], [
2570 LB_CHECK_COMPILE([if 'struct vm_operations' removed struct vm_area_struct],
2571 vm_operations_no_vm_area_struct, [
2572         #include <linux/mm.h>
2573 ],[
2574         struct vm_fault vmf;
2575
2576         ((struct vm_operations_struct *)0)->fault(&vmf);
2577         ((struct vm_operations_struct *)0)->page_mkwrite(&vmf);
2578 ],[
2579         AC_DEFINE(HAVE_VM_OPS_USE_VM_FAULT_ONLY, 1,
2580                 ['struct vm_operations' remove struct vm_area_struct argument])
2581 ])
2582 ]) # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2583
2584 #
2585 # Kernel version 4.12 commit 47f38c539e9a42344ff5a664942075bd4df93876
2586 # CURRENT_TIME is not 64 bit time safe so it was replaced with
2587 # current_time()
2588 #
2589 AC_DEFUN([LC_CURRENT_TIME], [
2590 LB_CHECK_COMPILE([if CURRENT_TIME has been replaced with current_time],
2591 current_time, [
2592         #include <linux/fs.h>
2593 ],[
2594         struct timespec ts = current_time(NULL);
2595 ],[
2596         AC_DEFINE(HAVE_CURRENT_TIME, 1,
2597                 [current_time() has replaced CURRENT_TIME])
2598 ])
2599 ]) # LIBCFS_CURRENT_TIME
2600
2601 #
2602 # LC_PROG_LINUX
2603 #
2604 # Lustre linux kernel checks
2605 #
2606 AC_DEFUN([LC_PROG_LINUX], [
2607         AC_MSG_NOTICE([Lustre kernel checks
2608 ==============================================================================])
2609
2610         LC_CONFIG_PINGER
2611         LC_CONFIG_CHECKSUM
2612         LC_CONFIG_HEALTH_CHECK_WRITE
2613         LC_CONFIG_LRU_RESIZE
2614
2615         LC_GLIBC_SUPPORT_FHANDLES
2616         LC_CONFIG_GSS
2617         LC_OPENSSL_SSK
2618
2619         # 2.6.32
2620         LC_BLK_QUEUE_MAX_SEGMENTS
2621
2622         # 2.6.33
2623         LC_HAVE_XATTR_HANDLER_FLAGS
2624
2625         # 2.6.34
2626         LC_HAVE_DQUOT_FS_DISK_QUOTA
2627         LC_HAVE_DQUOT_SUSPEND
2628         LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
2629
2630         # 2.6.35, 3.0.0
2631         LC_FILE_FSYNC
2632         LC_EXPORT_SIMPLE_SETATTR
2633         LC_EXPORT_TRUNCATE_COMPLETE_PAGE
2634
2635         # 2.6.36
2636         LC_FS_STRUCT_RWLOCK
2637         LC_SBOPS_EVICT_INODE
2638
2639         # 2.6.37
2640         LC_KERNEL_LOCKED
2641
2642         # 2.6.38
2643         LC_BLKDEV_GET_BY_DEV
2644         LC_GENERIC_PERMISSION
2645         LC_DCACHE_LOCK
2646         LC_INODE_I_RCU
2647         LC_D_COMPARE_7ARGS
2648         LC_D_DELETE_CONST
2649         LC_HAVE_BLK_PLUG
2650
2651         # 2.6.39
2652         LC_HAVE_FHANDLE_SYSCALLS
2653         LC_HAVE_FSTYPE_MOUNT
2654         LC_IOP_TRUNCATE
2655         LC_HAVE_INODE_OWNER_OR_CAPABLE
2656         LC_HAVE_SECURITY_IINITSEC
2657
2658         # 3.0
2659         LC_DIRTY_INODE_WITH_FLAG
2660         LC_SETNS
2661
2662         # 3.1
2663         LC_LM_XXX_LOCK_MANAGER_OPS
2664         LC_INODE_DIO_WAIT
2665         LC_IOP_GET_ACL
2666         LC_FILE_LLSEEK_SIZE
2667         LC_INODE_PERMISION_2ARGS
2668         LC_RADIX_EXCEPTION_ENTRY
2669         LC_HAVE_LOOP_CTL_GET_FREE
2670
2671         # 3.2
2672         LC_HAVE_PROTECT_I_NLINK
2673
2674         # 3.3
2675         LC_HAVE_MIGRATE_HEADER
2676         LC_MIGRATEPAGE_4ARGS
2677         LC_SUPEROPS_USE_DENTRY
2678         LC_INODEOPS_USE_UMODE_T
2679         LC_HAVE_CACHE_REGISTER
2680
2681         # 3.4
2682         LC_HAVE_D_MAKE_ROOT
2683         LC_KMAP_ATOMIC_HAS_1ARG
2684
2685         # 3.5
2686         LC_HAVE_CLEAR_INODE
2687         LC_HAVE_ENCODE_FH_PARENT
2688         LC_FILE_LLSEEK_SIZE_5ARG
2689
2690         # 3.6
2691         LC_DATA_FOR_LLITE_IS_LIST
2692         LC_DENTRY_OPEN_USE_PATH
2693         LC_HAVE_IOP_ATOMIC_OPEN
2694         LC_HAVE_SB_START_WRITE
2695
2696         # 3.7
2697         LC_HAVE_POSIXACL_USER_NS
2698
2699         # 3.8
2700         LC_HAVE_FILE_F_INODE
2701         LC_HAVE_FILE_INODE
2702         LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
2703
2704         # 3.9
2705         LC_HAVE_HLIST_FOR_EACH_3ARG
2706         LC_HAVE_BIO_END_SECTOR
2707         LC_HAVE_IS_SXID
2708
2709         # 3.10
2710         LC_HAVE_REMOVE_PROC_SUBTREE
2711         LC_HAVE_PROC_REMOVE
2712         LC_HAVE_PROJECT_QUOTA
2713         LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
2714
2715         # 3.11
2716         LC_INVALIDATE_RANGE
2717         LC_HAVE_DIR_CONTEXT
2718         LC_D_COMPARE_5ARGS
2719         LC_HAVE_DCOUNT
2720         LC_HAVE_DENTRY_D_U_D_ALIAS
2721         LC_HAVE_DENTRY_D_CHILD
2722         LC_PID_NS_FOR_CHILDREN
2723
2724         # 3.12
2725         LC_OLDSIZE_TRUNCATE_PAGECACHE
2726         LC_KIOCB_KI_LEFT
2727
2728         # 3.13
2729         LC_VFS_RENAME_5ARGS
2730         LC_VFS_UNLINK_3ARGS
2731
2732         # 3.14
2733         LC_HAVE_BVEC_ITER
2734         LC_HAVE_TRUNCATE_IPAGES_FINAL
2735         LC_IOPS_RENAME_WITH_FLAGS
2736         LC_IOP_SET_ACL
2737
2738         # 3.15
2739         LC_VFS_RENAME_6ARGS
2740
2741         # 3.16
2742         LC_DIRECTIO_USE_ITER
2743         LC_HAVE_IOV_ITER_INIT_DIRECTION
2744         LC_HAVE_IOV_ITER_TRUNCATE
2745         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
2746
2747         # 3.17
2748         LC_KEY_MATCH_DATA
2749
2750         # 3.18
2751         LC_PERCPU_COUNTER_INIT
2752         LC_NFS_FILLDIR_USE_CTX
2753
2754         # 3.19
2755         LC_KIOCB_HAS_NBYTES
2756         LC_HAVE_DQUOT_QC_DQBLK
2757
2758         # 3.20
2759         LC_BACKING_DEV_INFO_REMOVAL
2760         LC_HAVE_BDI_CAP_MAP_COPY
2761
2762         # 4.0.0
2763         LC_CANCEL_DIRTY_PAGE
2764
2765         # 4.1.0
2766         LC_IOV_ITER_RW
2767         LC_HAVE_SYNC_READ_WRITE
2768
2769         # 4.2
2770         LC_NEW_CANCEL_DIRTY_PAGE
2771         LC_BIO_ENDIO_USES_ONE_ARG
2772         LC_SYMLINK_OPS_USE_NAMEIDATA
2773
2774         # 4.3
2775         LC_HAVE_CACHE_HEAD_HLIST
2776         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2777
2778         # 4.4
2779         LC_HAVE_LOCKS_LOCK_FILE_WAIT
2780         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2781         LC_HAVE_BI_CNT
2782
2783         # 4.5
2784         LC_HAVE_FILE_DENTRY
2785
2786         # 4.5
2787         LC_HAVE_INODE_LOCK
2788         LC_HAVE_IOP_GET_LINK
2789
2790         # 4.6
2791         LC_HAVE_IN_COMPAT_SYSCALL
2792         LC_HAVE_XATTR_HANDLER_INODE_PARAM
2793
2794         # 4.7
2795         LC_DIRECTIO_2ARGS
2796         LC_GENERIC_WRITE_SYNC_2ARGS
2797
2798         # 4.8
2799         LC_HAVE_POSIX_ACL_VALID_USER_NS
2800         LC_D_COMPARE_4ARGS
2801         LC_FULL_NAME_HASH_3ARGS
2802         LC_STRUCT_POSIX_ACL_XATTR
2803         LC_IOP_XATTR
2804
2805         # 4.9
2806         LC_GROUP_INFO_GID
2807         LC_VFS_SETXATTR
2808
2809         # 4.10
2810         LC_IOP_GENERIC_READLINK
2811         LC_HAVE_VM_FAULT_ADDRESS
2812
2813         # 4.11
2814         LC_INODEOPS_ENHANCED_GETATTR
2815         LC_VM_OPERATIONS_REMOVE_VMF_ARG
2816
2817         # 4.12
2818         LC_CURRENT_TIME
2819
2820         #
2821         AS_IF([test "x$enable_server" != xno], [
2822                 LC_STACK_SIZE
2823                 LC_QUOTA64
2824                 LC_QUOTA_CONFIG
2825         ])
2826 ]) # LC_PROG_LINUX
2827
2828 #
2829 # LC_CONFIG_CLIENT
2830 #
2831 # Check whether to build the client side of Lustre
2832 #
2833 AC_DEFUN([LC_CONFIG_CLIENT], [
2834 AC_MSG_CHECKING([whether to build Lustre client support])
2835 AC_ARG_ENABLE([client],
2836         AC_HELP_STRING([--disable-client],
2837                 [disable Lustre client support]),
2838         [], [enable_client="yes"])
2839 AC_MSG_RESULT([$enable_client])
2840 ]) # LC_CONFIG_CLIENT
2841
2842 #
2843 # --enable-mpitests
2844 #
2845 AC_DEFUN([LB_CONFIG_MPITESTS], [
2846 AC_ARG_ENABLE([mpitests],
2847         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
2848                        [include mpi tests]), [
2849                 enable_mpitests="yes"
2850                 case $enableval in
2851                 yes)
2852                         MPICC_WRAPPER="mpicc"
2853                         ;;
2854                 no)
2855                         enable_mpitests="no"
2856                         ;;
2857                 *)
2858                         MPICC_WRAPPER=$enableval
2859                         ;;
2860                 esac
2861         ], [
2862                 enable_mpitests="yes"
2863                 MPICC_WRAPPER="mpicc"
2864         ])
2865
2866         if test "x$enable_mpitests" != "xno"; then
2867                 oldcc=$CC
2868                 CC=$MPICC_WRAPPER
2869                 AC_CACHE_CHECK([whether mpitests can be built],
2870                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2871                         #include <mpi.h>
2872                         int main(void) {
2873                                 int flag;
2874                                 MPI_Initialized(&flag);
2875                                 return 0;
2876                         }
2877                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
2878                 ])
2879                 enable_mpitests=$lb_cv_mpi_tests
2880                 CC=$oldcc
2881         fi
2882         AC_SUBST(MPICC_WRAPPER)
2883 ]) # LB_CONFIG_MPITESTS
2884
2885 #
2886 # LC_CONFIG_QUOTA
2887 #
2888 # whether to enable quota support global control
2889 #
2890 AC_DEFUN([LC_CONFIG_QUOTA], [
2891 AC_MSG_CHECKING([whether to enable quota support global control])
2892 AC_ARG_ENABLE([quota],
2893         AC_HELP_STRING([--enable-quota],
2894                 [enable quota support]),
2895         [], [enable_quota="yes"])
2896 AS_IF([test "x$enable_quota" = xyes],
2897         [AC_MSG_RESULT([yes])],
2898         [AC_MSG_RESULT([no])])
2899 ]) # LC_CONFIG_QUOTA
2900
2901 #
2902 # LC_QUOTA
2903 #
2904 AC_DEFUN([LC_QUOTA], [
2905 #check global
2906 LC_CONFIG_QUOTA
2907 #check for utils
2908 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
2909         AC_CHECK_HEADER([sys/quota.h],
2910                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
2911                         [Define to 1 if you have <sys/quota.h>.])],
2912                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2913 ])
2914 ]) # LC_QUOTA
2915
2916 #
2917 # LC_CONFIG_NODEMAP_PROC_DEBUG
2918 #
2919 # enable nodemap proc file debugging
2920 #
2921 AC_DEFUN([LC_NODEMAP_PROC_DEBUG], [
2922 AC_MSG_CHECKING([whether to enable nodemap proc debug])
2923 AC_ARG_ENABLE([nodemap_proc_debug],
2924         AC_HELP_STRING([--enable-nodemap-proc-debug],
2925                 [enable nodemap proc debug]),
2926         [], [enable_nodemap_proc_debug="no"])
2927 AC_MSG_RESULT([$enable_nodemap_proc_debug])
2928 AS_IF([test "x$enable_nodemap_proc_debug" != xno],
2929         [AC_DEFINE(NODEMAP_PROC_DEBUG, 1,
2930                 [enable nodemap proc debug support])])
2931 ]) # LC_NODEMAP_PROC_DEBUG
2932
2933 #
2934 # LC_OSD_ADDON
2935 #
2936 # configure support for optional OSD implementation
2937 #
2938 AC_DEFUN([LC_OSD_ADDON], [
2939 AC_MSG_CHECKING([whether to use OSD addon])
2940 AC_ARG_WITH([osd],
2941         AC_HELP_STRING([--with-osd=path],
2942                 [set path to optional osd]),
2943         [
2944         case "$with_osd" in
2945         no)
2946                 ENABLEOSDADDON=0
2947                 ;;
2948         *)
2949                 OSDADDON="$with_osd"
2950                 ENABLEOSDADDON=1
2951                 ;;
2952         esac
2953         ], [
2954                 ENABLEOSDADDON=0
2955         ])
2956 AS_IF([test $ENABLEOSDADDON -eq 0], [
2957         AC_MSG_RESULT([no])
2958         OSDADDON=""
2959 ], [
2960         OSDMODNAME=$(basename $OSDADDON)
2961         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
2962                 AC_MSG_RESULT([can't link])
2963                 OSDADDON=""
2964         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
2965                 AC_MSG_RESULT([$OSDMODNAME])
2966                 OSDADDON="subdir-m += $OSDMODNAME"
2967         ], [
2968                 AC_MSG_RESULT([can't link])
2969                 OSDADDON=""
2970         ])
2971 ])
2972 AC_SUBST(OSDADDON)
2973 ]) # LC_OSD_ADDON
2974
2975 #
2976 # LC_CONFIGURE
2977 #
2978 # other configure checks
2979 #
2980 AC_DEFUN([LC_CONFIGURE], [
2981 AC_MSG_NOTICE([Lustre core checks
2982 ==============================================================================])
2983
2984 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
2985         [CFLAGS="$CFLAGS -Wall -Werror"])
2986
2987 # maximum MDS thread count
2988 LC_MDS_MAX_THREADS
2989
2990 # lustre/utils/gss/gss_util.c
2991 # lustre/utils/gss/gssd_proc.c
2992 # lustre/utils/gss/krb5_util.c
2993 # lustre/utils/llog_reader.c
2994 # lustre/utils/create_iam.c
2995 # lustre/utils/libiam.c
2996 AC_CHECK_HEADERS([netdb.h endian.h])
2997 AC_CHECK_FUNCS([gethostbyname])
2998
2999 # lustre/utils/llverdev.c
3000 AC_CHECK_HEADERS([blkid/blkid.h])
3001
3002 # lustre/utils/llverfs.c
3003 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
3004
3005 SELINUX=""
3006 AC_CHECK_LIB([selinux], [is_selinux_enabled],
3007         [AC_CHECK_HEADERS([selinux/selinux.h],
3008                         [SELINUX="-lselinux"
3009                         AC_DEFINE([HAVE_SELINUX], 1,
3010                                 [support for selinux ])],
3011                         [AC_MSG_WARN([
3012
3013 No libselinux-devel package found, unable to build selinux enabled tools
3014 ])
3015 ])],
3016         [AC_MSG_WARN([
3017
3018 No selinux package found, unable to build selinux enabled tools
3019 ])
3020 ])
3021 AC_SUBST(SELINUX)
3022
3023 # Super safe df
3024 AC_MSG_CHECKING([whether to report minimum OST free space])
3025 AC_ARG_ENABLE([mindf],
3026         AC_HELP_STRING([--enable-mindf],
3027                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
3028         [], [enable_mindf="no"])
3029 AC_MSG_RESULT([$enable_mindf])
3030 AS_IF([test "$enable_mindf" = "yes"],
3031         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
3032
3033 AC_MSG_CHECKING([whether to randomly failing memory alloc])
3034 AC_ARG_ENABLE([fail_alloc],
3035         AC_HELP_STRING([--disable-fail-alloc],
3036                 [disable randomly alloc failure]),
3037         [], [enable_fail_alloc="yes"])
3038 AC_MSG_RESULT([$enable_fail_alloc])
3039 AS_IF([test "x$enable_fail_alloc" != xno],
3040         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
3041                 [enable randomly alloc failure])])
3042
3043 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
3044 AC_ARG_ENABLE([invariants],
3045         AC_HELP_STRING([--enable-invariants],
3046                 [enable invariant checking (cpu intensive)]),
3047         [], [enable_invariants="no"])
3048 AC_MSG_RESULT([$enable_invariants])
3049 AS_IF([test "x$enable_invariants" = xyes],
3050         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
3051                 [enable invariant checking])])
3052
3053 AC_MSG_CHECKING([whether to track references with lu_ref])
3054 AC_ARG_ENABLE([lu_ref],
3055         AC_HELP_STRING([--enable-lu_ref],
3056                 [enable lu_ref reference tracking code]),
3057         [], [enable_lu_ref="no"])
3058 AC_MSG_RESULT([$enable_lu_ref])
3059 AS_IF([test "x$enable_lu_ref" = xyes],
3060         [AC_DEFINE([USE_LU_REF], 1,
3061                 [enable lu_ref reference tracking code])])
3062
3063 AC_MSG_CHECKING([whether to enable page state tracking])
3064 AC_ARG_ENABLE([pgstate-track],
3065         AC_HELP_STRING([--enable-pgstate-track],
3066                 [enable page state tracking]),
3067         [], [enable_pgstat_track="no"])
3068 AC_MSG_RESULT([$enable_pgstat_track])
3069 AS_IF([test "x$enable_pgstat_track" = xyes],
3070         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
3071                 [enable page state tracking code])])
3072
3073 PKG_PROG_PKG_CONFIG
3074 AC_MSG_CHECKING([systemd unit file directory])
3075 AC_ARG_WITH([systemdsystemunitdir],
3076         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
3077                 [Directory for systemd service files])],
3078         [], [with_systemdsystemunitdir=auto])
3079 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
3080         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
3081         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
3082                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
3083                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
3084                 with_systemdsystemunitdir=no],
3085         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
3086 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
3087         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
3088 AC_MSG_RESULT([$with_systemdsystemunitdir])
3089 ]) # LC_CONFIGURE
3090
3091 #
3092 # LC_CONDITIONALS
3093 #
3094 # AM_CONDITIONALS for lustre
3095 #
3096 AC_DEFUN([LC_CONDITIONALS], [
3097 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
3098 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
3099 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
3100 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
3101 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
3102 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
3103 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
3104 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
3105 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
3106 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
3107 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
3108 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
3109 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
3110 ]) # LC_CONDITIONALS
3111
3112 #
3113 # LC_CONFIG_FILES
3114 #
3115 # files that should be generated with AC_OUTPUT
3116 #
3117 AC_DEFUN([LC_CONFIG_FILES],
3118 [AC_CONFIG_FILES([
3119 lustre/Makefile
3120 lustre/autoMakefile
3121 lustre/autoconf/Makefile
3122 lustre/conf/Makefile
3123 lustre/contrib/Makefile
3124 lustre/doc/Makefile
3125 lustre/include/Makefile
3126 lustre/include/lustre/Makefile
3127 lustre/include/uapi/linux/lustre/Makefile
3128 lustre/kernel_patches/targets/3.10-rhel7.target
3129 lustre/kernel_patches/targets/2.6-rhel6.9.target
3130 lustre/kernel_patches/targets/2.6-rhel6.8.target
3131 lustre/kernel_patches/targets/2.6-rhel6.7.target
3132 lustre/kernel_patches/targets/2.6-rhel6.6.target
3133 lustre/kernel_patches/targets/2.6-rhel6.target
3134 lustre/kernel_patches/targets/2.6-rhel5.target
3135 lustre/kernel_patches/targets/2.6-sles11.target
3136 lustre/kernel_patches/targets/3.0-sles11.target
3137 lustre/kernel_patches/targets/3.0-sles11sp3.target
3138 lustre/kernel_patches/targets/3.0-sles11sp4.target
3139 lustre/kernel_patches/targets/3.12-sles12.target
3140 lustre/kernel_patches/targets/4.4-sles12.target
3141 lustre/kernel_patches/targets/2.6-fc11.target
3142 lustre/kernel_patches/targets/2.6-fc12.target
3143 lustre/kernel_patches/targets/2.6-fc15.target
3144 lustre/kernel_patches/targets/3.x-fc18.target
3145 lustre/ldlm/Makefile
3146 lustre/fid/Makefile
3147 lustre/fid/autoMakefile
3148 lustre/llite/Makefile
3149 lustre/llite/autoMakefile
3150 lustre/lov/Makefile
3151 lustre/lov/autoMakefile
3152 lustre/mdc/Makefile
3153 lustre/mdc/autoMakefile
3154 lustre/lmv/Makefile
3155 lustre/lmv/autoMakefile
3156 lustre/lfsck/Makefile
3157 lustre/lfsck/autoMakefile
3158 lustre/mdt/Makefile
3159 lustre/mdt/autoMakefile
3160 lustre/mdd/Makefile
3161 lustre/mdd/autoMakefile
3162 lustre/fld/Makefile
3163 lustre/fld/autoMakefile
3164 lustre/obdclass/Makefile
3165 lustre/obdclass/autoMakefile
3166 lustre/obdclass/linux/Makefile
3167 lustre/obdecho/Makefile
3168 lustre/obdecho/autoMakefile
3169 lustre/ofd/Makefile
3170 lustre/ofd/autoMakefile
3171 lustre/osc/Makefile
3172 lustre/osc/autoMakefile
3173 lustre/ost/Makefile
3174 lustre/ost/autoMakefile
3175 lustre/osd-ldiskfs/Makefile
3176 lustre/osd-ldiskfs/autoMakefile
3177 lustre/osd-zfs/Makefile
3178 lustre/osd-zfs/autoMakefile
3179 lustre/mgc/Makefile
3180 lustre/mgc/autoMakefile
3181 lustre/mgs/Makefile
3182 lustre/mgs/autoMakefile
3183 lustre/target/Makefile
3184 lustre/ptlrpc/Makefile
3185 lustre/ptlrpc/autoMakefile
3186 lustre/ptlrpc/gss/Makefile
3187 lustre/ptlrpc/gss/autoMakefile
3188 lustre/quota/Makefile
3189 lustre/quota/autoMakefile
3190 lustre/scripts/Makefile
3191 lustre/scripts/systemd/Makefile
3192 lustre/tests/Makefile
3193 lustre/tests/mpi/Makefile
3194 lustre/tests/kernel/Makefile
3195 lustre/tests/kernel/autoMakefile
3196 lustre/utils/Makefile
3197 lustre/utils/gss/Makefile
3198 lustre/osp/Makefile
3199 lustre/osp/autoMakefile
3200 lustre/lod/Makefile
3201 lustre/lod/autoMakefile
3202 ])
3203 ]) # LC_CONFIG_FILES