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="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='$(CROSS_PATH)/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ])
  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* | darwin*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ])
  48
  49 #
  50 # LC_CONFIG_OBD_BUFFER_SIZE
  51 #
  52 # the maximum buffer size of lctl ioctls
  53 #
  54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
  55 [AC_MSG_CHECKING([maximum OBD ioctl size])
  56 AC_ARG_WITH([obd-buffer-size],
  57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  58                         [set lctl ioctl maximum bytes (default=8192)]),
  59         [
  60                 OBD_BUFFER_SIZE=$with_obd_buffer_size
  61         ],[
  62                 OBD_BUFFER_SIZE=8192
  63         ])
  64 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  65 AC_DEFINE_UNQUOTED(CONFIG_LUSTRE_OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
  66 ])
  67
  68 #
  69 # LC_READLINK_SSIZE_T
  70 #
  71 AC_DEFUN([LC_READLINK_SSIZE_T],
  72 [AC_MSG_CHECKING([if readlink returns ssize_t])
  73 AC_TRY_COMPILE([
  74         #include <unistd.h>
  75 ],[
  76         ssize_t readlink(const char *, char *, size_t);
  77 ],[
  78         AC_MSG_RESULT([yes])
  79         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
  80 ],[
  81         AC_MSG_RESULT([no])
  82 ])
  83 ])
  84
  85 #
  86 # LC_FUNC_DEV_SET_RDONLY
  87 #
  88 # check whether dev_set_rdonly is exported.  This is needed until we
  89 # have another mechanism to fence IO from the underlying device.
  90 #
  91 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
  92 [LB_CHECK_SYMBOL_EXPORT([dev_set_rdonly],
  93 [block/ll_rw_block.c,block/blk-core.c],[
  94         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel exports dev_set_rdonly])
  95 ],[
  96         AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])
  97 ])
  98 ])
  99
 100 #
 101 # Ensure stack size big than 8k in Lustre server (all kernels)
 102 #
 103 AC_DEFUN([LC_STACK_SIZE],
 104 [AC_MSG_CHECKING([stack size big than 8k])
 105 LB_LINUX_TRY_COMPILE([
 106         #include <linux/thread_info.h>
 107 ],[
 108         #if THREAD_SIZE < 8192
 109         #error "stack size < 8192"
 110         #endif
 111 ],[
 112         AC_MSG_RESULT(yes)
 113 ],[
 114         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
 115 ])
 116 ])
 117
 118 #
 119 # Allow the user to set the MDS thread upper limit
 120 #
 121 AC_DEFUN([LC_MDS_MAX_THREADS],
 122 [
 123         AC_ARG_WITH([mds_max_threads],
 124         AC_HELP_STRING([--with-mds-max-threads=count],
 125                        [maximum threads available on the MDS: (default=512)]),
 126         [
 127                 MDS_THREAD_COUNT=$with_mds_max_threads
 128                 AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of MDS threads])
 129         ])
 130 ])
 131
 132 #
 133 # LC_CONFIG_PINGER
 134 #
 135 # the pinger is temporary, until we have the recovery node in place
 136 #
 137 AC_DEFUN([LC_CONFIG_PINGER],
 138 [AC_MSG_CHECKING([whether to enable pinger support])
 139 AC_ARG_ENABLE([pinger],
 140         AC_HELP_STRING([--disable-pinger],
 141                         [disable recovery pinger support]),
 142         [],[enable_pinger='yes'])
 143 AC_MSG_RESULT([$enable_pinger])
 144 if test x$enable_pinger != xno ; then
 145   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 146 fi
 147 ])
 148
 149 #
 150 # LC_CONFIG_CHECKSUM
 151 #
 152 # do checksum of bulk data between client and OST
 153 #
 154 AC_DEFUN([LC_CONFIG_CHECKSUM],
 155 [AC_MSG_CHECKING([whether to enable data checksum support])
 156 AC_ARG_ENABLE([checksum],
 157        AC_HELP_STRING([--disable-checksum],
 158                        [disable data checksum support]),
 159        [],[enable_checksum='yes'])
 160 AC_MSG_RESULT([$enable_checksum])
 161 if test x$enable_checksum != xno ; then
 162   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 163 fi
 164 ])
 165
 166 #
 167 # LC_CONFIG_LIBLUSTRE_RECOVERY
 168 #
 169 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 170 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 171 AC_ARG_ENABLE([liblustre-recovery],
 172         AC_HELP_STRING([--disable-liblustre-recovery],
 173                         [disable liblustre recovery support]),
 174         [],[enable_liblustre_recovery='yes'])
 175 AC_MSG_RESULT([$enable_liblustre_recovery])
 176 if test x$enable_liblustre_recovery != xno ; then
 177   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 178 fi
 179 ])
 180
 181 #
 182 # LC_CONFIG_HEALTH_CHECK_WRITE
 183 #
 184 # Turn off the actual write to the disk
 185 #
 186 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 187 [AC_MSG_CHECKING([whether to enable a write with the health check])
 188 AC_ARG_ENABLE([health_write],
 189         AC_HELP_STRING([--enable-health_write],
 190                         [enable disk writes when doing health check]),
 191         [],[enable_health_write='no'])
 192 AC_MSG_RESULT([$enable_health_write])
 193 if test x$enable_health_write != xno ; then
 194   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 195 fi
 196 ])
 197
 198 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
 199 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
 200 AC_ARG_ENABLE([lru_resize],
 201         AC_HELP_STRING([--enable-lru-resize],
 202                         [enable lru resize support]),
 203         [],[enable_lru_resize='yes'])
 204 AC_MSG_RESULT([$enable_lru_resize])
 205 if test x$enable_lru_resize != xno; then
 206    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 207 fi
 208 ])
 209
 210 #
 211 # Quota support. The kernel must support CONFIG_QUOTA.
 212 #
 213 AC_DEFUN([LC_QUOTA_CONFIG],
 214 [LB_LINUX_CONFIG_IM([QUOTA],[],[
 215         AC_MSG_ERROR([Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.])
 216         ])
 217 ])
 218
 219 # truncate_complete_page() was exported from RHEL5/SLES10, but not in SLES11 SP0 (2.6.27)
 220 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 221 # delete_from_page_cache() is exported from 2.6.39
 222 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 223          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 224                                  [mm/truncate.c],
 225                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 226                                             [kernel export truncate_complete_page])])
 227           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
 228                                  [mm/filemap.c],
 229                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 230                                             [kernel export remove_from_page_cache])])
 231           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
 232                                  [mm/filemap.c],
 233                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 234                                             [kernel export delete_from_page_cache])])
 235          ])
 236
 237 #
 238 # added in 2.6.17
 239 #
 240 AC_DEFUN([LC_BIT_SPINLOCK_H],
 241 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 242         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 243         LB_LINUX_TRY_COMPILE([
 244                 #include <asm/processor.h>
 245                 #include <linux/spinlock.h>
 246                 #include <linux/bit_spinlock.h>
 247         ],[],[
 248                 AC_MSG_RESULT([yes])
 249                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 250         ],[
 251                 AC_MSG_RESULT([no])
 252         ])
 253 ],
 254 [])
 255 ])
 256
 257 #
 258 # LC_CAPA_CRYPTO
 259 #
 260 AC_DEFUN([LC_CAPA_CRYPTO],
 261 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 262         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 263 ])
 264 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 265         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 266 ])
 267 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 268         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 269 ])
 270 ])
 271
 272 #
 273 # LC_CONFIG_RMTCLIENT
 274 #
 275 dnl FIXME
 276 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 277 dnl FIXME
 278 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 279 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 280         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 281 ])
 282 ])
 283
 284 #
 285 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 286 #
 287 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 288 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 289  AC_ARG_ENABLE([gss_keyring],
 290                [AC_HELP_STRING([--disable-gss-keyring],
 291                                [disable gss keyring backend])],
 292                [],[enable_gss_keyring='yes'])
 293  AC_MSG_RESULT([$enable_gss_keyring])
 294
 295  if test x$enable_gss_keyring != xno; then
 296         LB_LINUX_CONFIG_IM([KEYS],[],
 297                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 298
 299         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 300                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 301
 302         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 303                   [Define this if you enable gss keyring backend])
 304  fi
 305 ])
 306
 307 AC_DEFUN([LC_CONFIG_SUNRPC],
 308 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 309                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 310 ])
 311
 312 #
 313 # LC_CONFIG_GSS (default disabled)
 314 #
 315 # Build gss and related tools of Lustre. Currently both kernel and user space
 316 # parts are depend on linux platform.
 317 #
 318 AC_DEFUN([LC_CONFIG_GSS],
 319 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 320  AC_ARG_ENABLE([gss],
 321                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 322                [],[enable_gss='no'])
 323  AC_MSG_RESULT([$enable_gss])
 324
 325  if test x$enable_gss == xyes; then
 326         LC_CONFIG_GSS_KEYRING
 327         LC_CONFIG_SUNRPC
 328
 329         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 330
 331         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 332                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 333         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 334                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 335         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 336                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 337         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 338                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 339
 340         AC_CHECK_LIB([gssapi], [gss_export_lucid_sec_context],
 341                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 342                      [AC_CHECK_LIB([gssglue], [gss_export_lucid_sec_context],
 343                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 344                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 345
 346         AC_SUBST(GSSAPI_LIBS)
 347
 348         AC_KERBEROS_V5
 349  fi
 350 ])
 351
 352 # 2.6.12
 353
 354 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
 355 # yet tree_lock is converted from rwlock to spin_lock since v2.6.26
 356 AC_DEFUN([LC_RW_TREE_LOCK],
 357 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
 358 tmp_flags="$EXTRA_KCFLAGS"
 359 EXTRA_KCFLAGS="-Werror"
 360 LB_LINUX_TRY_COMPILE([
 361         #include <linux/fs.h>
 362 ],[
 363         struct address_space a;
 364
 365         write_lock(&a.tree_lock);
 366 ],[
 367         AC_MSG_RESULT([yes])
 368         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
 369 ],[
 370         AC_MSG_RESULT([no])
 371 ])
 372 EXTRA_KCFLAGS="$tmp_flags"
 373 ])
 374
 375 #2.6.18 + RHEL5 (fc6)
 376
 377 #
 378 # LC_LINUX_FIEMAP_H
 379 #
 380 # fiemap.h is added since v2.6.28
 381 # RHEL5 2.6.18 has it, while SLES10 2.6.27 does not
 382 #
 383 AC_DEFUN([LC_LINUX_FIEMAP_H],
 384 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
 385         AC_MSG_CHECKING([if fiemap.h can be compiled])
 386         LB_LINUX_TRY_COMPILE([
 387                 #include <linux/types.h>
 388                 #include <linux/fiemap.h>
 389         ],[],[
 390                 AC_MSG_RESULT([yes])
 391                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
 392         ],[
 393                 AC_MSG_RESULT([no])
 394         ])
 395 ],
 396 [])
 397 ])
 398
 399 # raid5-zerocopy patch
 400
 401 #
 402 # LC_PAGE_CONSTANT
 403 #
 404 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
 405 # it support constant page, which means the page won't be modified during the
 406 # IO.
 407 #
 408 AC_DEFUN([LC_PAGE_CONSTANT],
 409 [AC_MSG_CHECKING([if kernel have PageConstant defined])
 410 LB_LINUX_TRY_COMPILE([
 411         #include <linux/mm.h>
 412         #include <linux/page-flags.h>
 413 ],[
 414         #ifndef PG_constant
 415         #error "Have no raid5 zcopy patch"
 416         #endif
 417 ],[
 418         AC_MSG_RESULT(yes)
 419         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
 420 ],[
 421         AC_MSG_RESULT(no);
 422 ])
 423 ])
 424
 425 # 2.6.22
 426
 427 #
 428 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
 429 #
 430 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
 431 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
 432 LB_LINUX_TRY_COMPILE([
 433         #include <linux/fs.h>
 434 ],[
 435         int v __attribute__ ((unused));
 436         v = FS_RENAME_DOES_D_MOVE;
 437 ],[
 438         AC_MSG_RESULT([yes])
 439         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
 440 ],[
 441         AC_MSG_RESULT([no])
 442 ])
 443 ])
 444
 445 # 2.6.23
 446
 447 # 2.6.23 have return type 'void' for unregister_blkdev
 448 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
 449 [AC_MSG_CHECKING([if unregister_blkdev return int])
 450 LB_LINUX_TRY_COMPILE([
 451         #include <linux/fs.h>
 452 ],[
 453         int i __attribute__ ((unused));
 454         i = unregister_blkdev(0,NULL);
 455 ],[
 456         AC_MSG_RESULT([yes])
 457         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
 458                 [unregister_blkdev return int])
 459 ],[
 460         AC_MSG_RESULT([no])
 461 ])
 462 ])
 463
 464 # 2.6.24
 465
 466 # 2.6.24 has bio_endio with 2 args
 467 AC_DEFUN([LC_BIO_ENDIO_2ARG],
 468 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
 469 LB_LINUX_TRY_COMPILE([
 470         #include <linux/bio.h>
 471 ],[
 472         bio_endio(NULL, 0);
 473 ], [
 474         AC_MSG_RESULT([yes])
 475         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
 476                 [kernel has bio_endio with 2 args])
 477 ],[
 478         AC_MSG_RESULT([no])
 479 ])
 480 ])
 481
 482 # 2.6.24 removes long aged procfs entry -> deleted member
 483 AC_DEFUN([LC_PROCFS_DELETED],
 484 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
 485 LB_LINUX_TRY_COMPILE([
 486         #include <linux/proc_fs.h>
 487 ],[
 488         struct proc_dir_entry pde;
 489
 490         pde.deleted = sizeof(pde);
 491 ], [
 492         AC_MSG_RESULT([yes])
 493         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
 494                 [kernel has deleted member in procfs entry struct])
 495 ],[
 496         AC_MSG_RESULT([no])
 497 ])
 498 ])
 499
 500 # 2.6.26
 501
 502 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
 503 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
 504 [AC_MSG_CHECKING([fs_struct use path structure])
 505 LB_LINUX_TRY_COMPILE([
 506         #include <asm/atomic.h>
 507         #include <linux/spinlock.h>
 508         #include <linux/fs_struct.h>
 509 ],[
 510         struct fs_struct fs;
 511
 512         fs.pwd = *((struct path *)sizeof(fs));
 513 ], [
 514         AC_MSG_RESULT([yes])
 515         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
 516                 [fs_struct use path structure])
 517 ],[
 518         AC_MSG_RESULT([no])
 519 ])
 520 ])
 521
 522 #
 523 # 2.6.27
 524 #
 525
 526 # LC_SECURITY_PLUG  # for SLES10 SP2 (2.6.27)
 527 # check security plug in sles10 sp2 kernel
 528 AC_DEFUN([LC_SECURITY_PLUG],
 529 [AC_MSG_CHECKING([If kernel has security plug support])
 530 LB_LINUX_TRY_COMPILE([
 531         #include <linux/fs.h>
 532         #include <linux/stddef.h>
 533 ],[
 534         notify_change(NULL, NULL, NULL);
 535 ],[
 536         AC_MSG_RESULT(yes)
 537         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
 538                 [SLES10 SP2 use extra parameter in vfs])
 539 ],[
 540         AC_MSG_RESULT(no)
 541 ])
 542 ])
 543
 544 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
 545 [AC_MSG_CHECKING([inode_operations->permission has two args])
 546 LB_LINUX_TRY_COMPILE([
 547         #include <linux/fs.h>
 548 ],[
 549         struct inode *inode __attribute__ ((unused));
 550
 551         inode = NULL;
 552         inode->i_op->permission(NULL, 0);
 553 ],[
 554         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 555                   [inode_operations->permission has two args])
 556         AC_MSG_RESULT([yes])
 557 ],[
 558         AC_MSG_RESULT([no])
 559 ])
 560 ])
 561
 562 # 2.6.27 use 5th parameter in quota_on for remount.
 563 AC_DEFUN([LC_QUOTA_ON_5ARGS],
 564 [AC_MSG_CHECKING([quota_on needs 5 parameters])
 565 LB_LINUX_TRY_COMPILE([
 566         #include <linux/fs.h>
 567         #include <linux/quota.h>
 568 ],[
 569         struct quotactl_ops *qop = NULL;
 570         qop->quota_on(NULL, 0, 0, NULL, 0);
 571 ],[
 572         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
 573                 [quota_on needs 5 paramters])
 574         AC_MSG_RESULT([yes])
 575 ],[
 576         AC_MSG_RESULT([no])
 577 ])
 578 ])
 579
 580 # 2.6.27 use 3th parameter in quota_off for remount.
 581 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
 582 [AC_MSG_CHECKING([quota_off needs 3 parameters])
 583 LB_LINUX_TRY_COMPILE([
 584         #include <linux/fs.h>
 585         #include <linux/quota.h>
 586 ],[
 587         struct quotactl_ops *qop = NULL;
 588         qop->quota_off(NULL, 0, 0);
 589 ],[
 590         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
 591                 [quota_off needs 3 paramters])
 592         AC_MSG_RESULT([yes])
 593 ],[
 594         AC_MSG_RESULT([no])
 595 ])
 596 ])
 597
 598 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 599 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA],
 600 tmp_flags="$EXTRA_KCFLAGS"
 601 EXTRA_KCFLAGS="-Werror"
 602 [AC_MSG_CHECKING([if quotactl_ops.set_dqblk takes struct fs_disk_quota])
 603 LB_LINUX_TRY_COMPILE([
 604         #include <linux/fs.h>
 605         #include <linux/quota.h>
 606 ],[
 607         struct quotactl_ops qops = {};
 608         struct fs_disk_quota fdq;
 609         qops.set_dqblk(NULL, 0, 0, &fdq);
 610 ],[
 611         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1, [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 612         AC_MSG_RESULT([yes])
 613 ],[
 614         AC_MSG_RESULT([no])
 615 ])
 616 EXTRA_KCFLAGS="$tmp_flags"
 617 ])
 618
 619 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 620 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND],
 621 [AC_MSG_CHECKING([if dquot_suspend is defined])
 622 LB_LINUX_TRY_COMPILE([
 623         #include <linux/quotaops.h>
 624 ],[
 625         dquot_suspend(NULL, -1);
 626 ],[
 627         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 628         AC_MSG_RESULT([yes])
 629 ],[
 630         AC_MSG_RESULT([no])
 631 ])
 632 ])
 633
 634 # 2.6.27.15-2 sles11
 635
 636 # 2.6.27 sles11 remove the bi_hw_segments
 637 AC_DEFUN([LC_BI_HW_SEGMENTS],
 638 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
 639 LB_LINUX_TRY_COMPILE([
 640         #include <linux/bio.h>
 641 ],[
 642         struct bio io;
 643         io.bi_hw_segments = sizeof(io);
 644 ],[
 645         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
 646                 [struct bio has a bi_hw_segments field])
 647         AC_MSG_RESULT([yes])
 648 ],[
 649         AC_MSG_RESULT([no])
 650 ])
 651 ])
 652
 653 #
 654 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
 655 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
 656 AC_DEFUN([LC_HAVE_QUOTAIO_H],
 657 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
 658         AC_DEFINE(HAVE_QUOTAIO_H, 1,
 659                 [kernel has include/linux/quotaio_v2.h])
 660 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
 661                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
 662                 [kernel has fs/quotaio_v1.h])
 663 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
 664                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
 665                 [kernel has fs/quota/quotaio_v2.h])
 666 ],[
 667         AC_MSG_RESULT([no])
 668 ])
 669 ])
 670 ])
 671 ])
 672
 673 # 2.6.32
 674
 675 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 676 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
 677 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
 678 LB_LINUX_TRY_COMPILE([
 679         #include <linux/blkdev.h>
 680 ],[
 681         blk_queue_max_segments(NULL, 0);
 682 ],[
 683         AC_MSG_RESULT(yes)
 684         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 685                   [blk_queue_max_segments is defined])
 686 ],[
 687         AC_MSG_RESULT(no)
 688 ])
 689 ])
 690
 691 #
 692 # LC_QUOTA64
 693 #
 694 # Check if kernel has been patched for 64-bit quota limits support.
 695 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 696 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 697 # that in the absence of quotaio_v1.h in the kernel headers.
 698 #
 699 AC_DEFUN([LC_QUOTA64],[
 700         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
 701 tmp_flags="$EXTRA_KCFLAGS"
 702 EXTRA_KCFLAGS="-I$LINUX/fs"
 703         LB_LINUX_TRY_COMPILE([
 704                 #include <linux/kernel.h>
 705                 #include <linux/fs.h>
 706                 #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 707                 # include <quota/quotaio_v2.h>
 708                 struct v2r1_disk_dqblk dqblk_r1;
 709                 #else
 710                 #include <linux/quota.h>
 711                 int ver = QFMT_VFS_V1;
 712                 #endif
 713         ],[],[
 714                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 715                 AC_MSG_RESULT([yes])
 716         ],[
 717                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 718                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
 719                 ],[])
 720                 AC_MSG_RESULT([no])
 721         ])
 722 EXTRA_KCFLAGS=$tmp_flags
 723 ])
 724
 725 #
 726 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 727 #
 728 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
 729 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
 730 LB_LINUX_TRY_COMPILE([
 731         #include <asm/atomic.h>
 732         #include <linux/spinlock.h>
 733         #include <linux/fs_struct.h>
 734 ],[
 735         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 736 ],[
 737         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
 738                   [fs_struct.lock use rwlock])
 739         AC_MSG_RESULT([yes])
 740 ],[
 741         AC_MSG_RESULT([no])
 742 ])
 743 ])
 744
 745 #
 746 # 2.6.36 super_operations add evict_inode method. it hybird of
 747 # delete_inode & clear_inode.
 748 #
 749 AC_DEFUN([LC_SBOPS_EVICT_INODE],
 750 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
 751 LB_LINUX_TRY_COMPILE([
 752         #include <linux/fs.h>
 753 ],[
 754         ((struct super_operations *)0)->evict_inode(NULL);
 755 ],[
 756         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 757                 [super_operations.evict_inode() is exist in kernel])
 758         AC_MSG_RESULT([yes])
 759 ],[
 760         AC_MSG_RESULT([no])
 761 ])
 762 ])
 763
 764 #
 765 # 2.6.35 file_operations.fsync taken 2 arguments.
 766 # 3.0.0 file_operations.fsync takes 4 arguments.
 767 #
 768 AC_DEFUN([LC_FILE_FSYNC],
 769 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
 770 LB_LINUX_TRY_COMPILE([
 771         #include <linux/fs.h>
 772 ],[
 773         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 774 ],[
 775         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 776                 [file_operations.fsync takes 4 arguments])
 777         AC_MSG_RESULT([yes, 4 args])
 778 ],[
 779         LB_LINUX_TRY_COMPILE([
 780                 #include <linux/fs.h>
 781         ],[
 782            ((struct file_operations *)0)->fsync(NULL, 0);
 783         ],[
 784                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 785                         [file_operations.fsync takes 2 arguments])
 786                 AC_MSG_RESULT([yes, 2 args])
 787         ],[
 788                 AC_MSG_RESULT([no])
 789         ])
 790 ])
 791 ])
 792
 793 #
 794 # 2.6.37 remove kernel_locked
 795 #
 796 AC_DEFUN([LC_KERNEL_LOCKED],
 797 [AC_MSG_CHECKING([if kernel_locked is defined])
 798 LB_LINUX_TRY_COMPILE([
 799         #include <linux/smp_lock.h>
 800 ],[
 801         kernel_locked();
 802 ],[
 803         AC_MSG_RESULT([yes])
 804         AC_DEFINE(HAVE_KERNEL_LOCKED, 1,
 805                 [kernel_locked is defined])
 806 ],[
 807         AC_MSG_RESULT([no])
 808 ])
 809 ])
 810
 811 #
 812 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 813 #
 814 AC_DEFUN([LC_D_COMPARE_7ARGS],
 815 [AC_MSG_CHECKING([if d_compare taken 7 arguments])
 816 LB_LINUX_TRY_COMPILE([
 817         #include <linux/dcache.h>
 818 ],[
 819         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 820 ],[
 821         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1,
 822                 [d_compare need 7 arguments])
 823         AC_MSG_RESULT([yes])
 824 ],[
 825         AC_MSG_RESULT([no])
 826 ])
 827 ])
 828
 829 #
 830 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 831 #
 832 AC_DEFUN([LC_D_DELETE_CONST],
 833 [AC_MSG_CHECKING([if d_delete has const declare on first parameter])
 834 tmp_flags="$EXTRA_KCFLAGS"
 835 EXTRA_KCFLAGS="-Werror"
 836 LB_LINUX_TRY_COMPILE([
 837         #include <linux/dcache.h>
 838 ],[
 839         const struct dentry *d = NULL;
 840         ((struct dentry_operations*)0)->d_delete(d);
 841 ],[
 842         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 843                 [d_delete first parameter declared const])
 844         AC_MSG_RESULT([yes])
 845 ],[
 846         AC_DEFINE(HAVE_D_DELETE_CONST, , [])
 847         AC_MSG_RESULT([no])
 848 ])
 849 EXTRA_KCFLAGS="$tmp_flags"
 850 ])
 851
 852 #
 853 # 2.6.38 dcache_lock removed. rcu-walk commited.
 854 #
 855 AC_DEFUN([LC_DCACHE_LOCK],
 856 [AC_MSG_CHECKING([if dcache_lock is exist])
 857 LB_LINUX_TRY_COMPILE([
 858         #include <linux/dcache.h>
 859 ],[
 860         spin_lock(&dcache_lock);
 861 ],[
 862         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 863                 [dcache_lock is exist])
 864         AC_MSG_RESULT([yes])
 865 ],[
 866         AC_MSG_RESULT([no])
 867 ])
 868 ])
 869
 870 #
 871 # 2.6.38 inode.i_rcu added.
 872 #
 873 AC_DEFUN([LC_INODE_I_RCU],
 874 [AC_MSG_CHECKING([if inode.i_rcu exists])
 875 LB_LINUX_TRY_COMPILE([
 876         #include <linux/fs.h>
 877 ],[
 878         struct inode ino;
 879         struct rcu_head rcu = {};
 880         ino.i_rcu = rcu;
 881 ],[
 882         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 883                 [inode.i_rcu exists])
 884         AC_MSG_RESULT([yes])
 885 ],[
 886         AC_MSG_RESULT([no])
 887 ])
 888 ])
 889
 890 #
 891 # 2.6.38 export blkdev_get_by_dev
 892 #
 893 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
 894 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
 895 [fs/block_dev.c],[
 896 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 897             [blkdev_get_by_dev is exported by the kernel])
 898 ],[
 899 ])
 900 ])
 901
 902 #
 903 # 2.6.38 use path as 4th parameter in quota_on.
 904 #
 905 AC_DEFUN([LC_QUOTA_ON_USE_PATH],
 906 [AC_MSG_CHECKING([quota_on use path as parameter])
 907 tmp_flags="$EXTRA_KCFLAGS"
 908 EXTRA_KCFLAGS="-Werror"
 909 LB_LINUX_TRY_COMPILE([
 910         #include <linux/fs.h>
 911         #include <linux/quota.h>
 912 ],[
 913         ((struct quotactl_ops *)0)->quota_on(NULL, 0, 0, ((struct path*)0));
 914 ],[
 915         AC_DEFINE(HAVE_QUOTA_ON_USE_PATH, 1,
 916                 [quota_on use path as 4th paramter])
 917         AC_MSG_RESULT([yes])
 918 ],[
 919         AC_MSG_RESULT([no])
 920 ])
 921 EXTRA_KCFLAGS="$tmp_flags"
 922 ])
 923
 924 #
 925 # 2.6.38 export simple_setattr
 926 #
 927 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
 928 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
 929 [fs/libfs.c],[
 930 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 931             [simple_setattr is exported by the kernel])
 932 ],[
 933 ])
 934 ])
 935
 936 #
 937 # 2.6.39 remove unplug_fn from request_queue.
 938 #
 939 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
 940 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
 941 LB_LINUX_TRY_COMPILE([
 942         #include <linux/blkdev.h>
 943 ],[
 944         do{ }while(sizeof(((struct request_queue *)0)->unplug_fn));
 945 ],[
 946         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
 947                   [request_queue has unplug_fn field])
 948         AC_MSG_RESULT([yes])
 949 ],[
 950         AC_MSG_RESULT([no])
 951 ])
 952 ])
 953
 954 #
 955 # 2.6.39 replace get_sb with mount in struct file_system_type
 956 #
 957 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT],
 958 [AC_MSG_CHECKING([if file_system_type has mount field])
 959 LB_LINUX_TRY_COMPILE([
 960         #include <linux/fs.h>
 961 ],[
 962         struct file_system_type fst;
 963         void *i = (void *) fst.mount;
 964 ],[
 965         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 966                 [struct file_system_type has mount field])
 967         AC_MSG_RESULT([yes])
 968 ],[
 969         AC_MSG_RESULT([no])
 970 ])
 971 ])
 972
 973 #
 974 # 3.0 dirty_inode() has a flag parameter
 975 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 976 #
 977 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG],
 978 [AC_MSG_CHECKING([if dirty_inode super_operation takes flag])
 979 LB_LINUX_TRY_COMPILE([
 980         #include <linux/fs.h>
 981 ],[
 982         struct inode *inode;
 983         inode->i_sb->s_op->dirty_inode(NULL, 0);
 984 ],[
 985         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 986                   [dirty_inode super_operation takes flag])
 987         AC_MSG_RESULT([yes])
 988 ],[
 989         AC_MSG_RESULT([no])
 990 ])
 991 ])
 992
 993 #
 994 # 2.6.38 generic_permission taken 4 parameters.
 995 # in fact, it means rcu-walk aware permission bring.
 996 #
 997 # 3.1 generic_permission taken 2 parameters.
 998 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 999 #
1000 AC_DEFUN([LC_GENERIC_PERMISSION],
1001 [AC_MSG_CHECKING([if generic_permission take 2 or 4 arguments])
1002 LB_LINUX_TRY_COMPILE([
1003         #include <linux/fs.h>
1004 ],[
1005         generic_permission(NULL, 0);
1006 ],[
1007         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
1008                   [generic_permission taken 2 arguments])
1009         AC_MSG_RESULT([yes, 2 args])
1010 ],[
1011         LB_LINUX_TRY_COMPILE([
1012                 #include <linux/fs.h>
1013         ],[
1014                 generic_permission(NULL, 0, 0, NULL);
1015         ],[
1016                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
1017                           [generic_permission taken 4 arguments])
1018                 AC_MSG_RESULT([yes, 4 args])
1019         ],[
1020                 AC_MSG_RESULT([no])
1021         ])
1022 ])
1023 ])
1024
1025 #
1026 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
1027 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
1028 #
1029 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS],
1030 [AC_MSG_CHECKING([if lock-manager ops renamed to lm_xxx])
1031 LB_LINUX_TRY_COMPILE([
1032         #include <linux/fs.h>
1033 ],[
1034         struct lock_manager_operations lm_ops;
1035         lm_ops.lm_compare_owner = NULL;
1036 ],[
1037         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
1038                   [lock-manager ops renamed to lm_xxx])
1039         AC_MSG_RESULT([yes])
1040 ],[
1041         AC_MSG_RESULT([no])
1042 ])
1043 ])
1044
1045 #
1046 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait/
1047 #     inode_dio_done instead.
1048 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
1049 #
1050 AC_DEFUN([LC_INODE_DIO_WAIT],
1051 [AC_MSG_CHECKING([if inode->i_alloc_sem is killed and use inode_dio_wait/done.])
1052 LB_LINUX_TRY_COMPILE([
1053         #include <linux/fs.h>
1054 ],[
1055         inode_dio_wait((struct inode *)0);
1056         inode_dio_done((struct inode *)0);
1057 ],[
1058         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
1059                   [inode->i_alloc_sem is killed and use inode_dio_wait/done])
1060         AC_MSG_RESULT([yes])
1061 ],[
1062         AC_MSG_RESULT([no])
1063 ])
1064 ])
1065
1066 #
1067 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
1068 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
1069 #
1070 AC_DEFUN([LC_IOP_GET_ACL],
1071 [AC_MSG_CHECKING([inode_operations has .get_acl member function])
1072 LB_LINUX_TRY_COMPILE([
1073         #include <linux/fs.h>
1074 ],[
1075         struct inode_operations iop;
1076         iop.get_acl = NULL;
1077 ],[
1078         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
1079                   [inode_operations has .get_acl member function])
1080         AC_MSG_RESULT([yes])
1081 ],[
1082         AC_MSG_RESULT([no])
1083 ])
1084 ])
1085
1086 #
1087 # 3.1.1 has ext4_blocks_for_truncate
1088 #
1089 AC_DEFUN([LC_BLOCKS_FOR_TRUNCATE],
1090 [AC_MSG_CHECKING([if kernel has ext4_blocks_for_truncate])
1091 LB_LINUX_TRY_COMPILE([
1092         #include <linux/fs.h>
1093         #include "$LINUX/fs/ext4/ext4_jbd2.h"
1094         #include "$LINUX/fs/ext4/truncate.h"
1095 ],[
1096         ext4_blocks_for_truncate(NULL);
1097 ],[
1098         AC_MSG_RESULT([yes])
1099         AC_DEFINE(HAVE_BLOCKS_FOR_TRUNCATE, 1,
1100                   [kernel has ext4_blocks_for_truncate])
1101 ],[
1102         AC_MSG_RESULT([no])
1103 ])
1104 ])
1105
1106 #
1107 # 3.1 introduced generic_file_llseek_size()
1108 #
1109 AC_DEFUN([LC_FILE_LLSEEK_SIZE],
1110         [LB_CHECK_SYMBOL_EXPORT([generic_file_llseek_size],
1111         [fs/read_write.c],
1112         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
1113                    [generic_file_llseek_size is exported by the kernel])])
1114 ])
1115
1116 #
1117 # 3.2 request_queue.make_request_fn defined as function returns with void
1118 # see kernel commit 5a7bbad27a410350e64a2d7f5ec18fc73836c14f
1119 #
1120 AC_DEFUN([LC_HAVE_VOID_MAKE_REQUEST_FN],
1121 [AC_MSG_CHECKING([if request_queue.make_request_fn returns void but not int])
1122 LB_LINUX_TRY_COMPILE([
1123         #include <linux/blkdev.h>
1124 ],[
1125         int ret;
1126         make_request_fn         *mrf;
1127         ret = mrf(NULL, NULL);
1128 ],[
1129         AC_MSG_RESULT([no])
1130 ],[
1131         AC_DEFINE(HAVE_VOID_MAKE_REQUEST_FN, 1,
1132                   [request_queue.make_request_fn returns void but not int])
1133         AC_MSG_RESULT([yes])
1134 ])
1135 ])
1136
1137 #
1138 # 3.2 protects inode->i_nlink from direct modification
1139 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
1140 # at the same time adds set_nlink(), so checks set_nlink() for it.
1141 #
1142 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK],
1143 [AC_MSG_CHECKING([if inode->i_nlink is protected from direct modification])
1144 LB_LINUX_TRY_COMPILE([
1145         #include <linux/fs.h>
1146 ],[
1147         struct inode i;
1148         set_nlink(&i, 1);
1149 ],[
1150         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
1151                   [inode->i_nlink is protected from direct modification])
1152         AC_MSG_RESULT([yes])
1153 ],[
1154         AC_MSG_RESULT([no])
1155 ])
1156 ])
1157
1158 #
1159 # 3.3 introduces migrate_mode.h and migratepage has 4 args
1160 #
1161 AC_DEFUN([LC_HAVE_MIGRATE_HEADER],
1162 [LB_CHECK_FILE([$LINUX/include/linux/migrate.h],[
1163                 AC_DEFINE(HAVE_MIGRATE_H, 1,
1164                 [kernel has include/linux/migrate.h])
1165 ],[LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h],[
1166                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
1167                         [kernel has include/linux/migrate_mode.h])
1168 ],[
1169         AC_MSG_RESULT([no])
1170 ])
1171 ])
1172 ])
1173
1174 AC_DEFUN([LC_MIGRATEPAGE_4ARGS],
1175 [AC_MSG_CHECKING([if address_space_operations.migratepage has 4 args])
1176 LB_LINUX_TRY_COMPILE([
1177         #include <linux/fs.h>
1178 #ifdef HAVE_MIGRATE_H
1179         #include <linux/migrate.h>
1180 #elif defined(HAVE_MIGRATE_MODE_H)
1181         #include <linux/migrate_mode.h>
1182 #endif
1183 ],[
1184         struct address_space_operations aops;
1185
1186         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
1187 ],[
1188         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
1189                 [address_space_operations.migratepage has 4 args])
1190         AC_MSG_RESULT([yes])
1191 ],[
1192         AC_MSG_RESULT([no])
1193 ])
1194 ])
1195
1196 #
1197 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1198 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1199 #
1200 AC_DEFUN([LC_SUPEROPS_USE_DENTRY],
1201 [AC_MSG_CHECKING([if super_operations use dentry as parameter])
1202 tmp_flags="$EXTRA_KCFLAGS"
1203 EXTRA_KCFLAGS="-Werror"
1204 LB_LINUX_TRY_COMPILE([
1205         #include <linux/fs.h>
1206         int show_options(struct seq_file *seq, struct dentry *root){
1207                 return 0;
1208         }
1209 ],[
1210         struct super_operations ops;
1211         ops.show_options = show_options;
1212 ],[
1213         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1214                   [super_operations use dentry as parameter])
1215         AC_MSG_RESULT([yes])
1216 ],[
1217         AC_MSG_RESULT([no])
1218 ])
1219 EXTRA_KCFLAGS="$tmp_flags"
1220 ])
1221
1222 #
1223 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1224 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1225 #
1226 AC_DEFUN([LC_INODEOPS_USE_UMODE_T],
1227 [AC_MSG_CHECKING([if inode_operations use umode_t as parameter])
1228 tmp_flags="$EXTRA_KCFLAGS"
1229 EXTRA_KCFLAGS="-Werror"
1230 LB_LINUX_TRY_COMPILE([
1231         #include <linux/fs.h>
1232         #include <linux/types.h>
1233         int my_mknod(struct inode *dir, struct dentry *dchild,
1234                      umode_t mode, dev_t dev)
1235         {
1236                 return 0;
1237         }
1238 ],[
1239         struct inode_operations ops;
1240         ops.mknod = my_mknod;
1241 ],[
1242         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1243                   [inode_operations use umode_t as parameter])
1244         AC_MSG_RESULT([yes])
1245 ],[
1246         AC_MSG_RESULT([no])
1247 ])
1248 EXTRA_KCFLAGS="$tmp_flags"
1249 ])
1250
1251 # 3.4 kmap_atomic removes second argument
1252 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1253 #
1254 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG],
1255 [AC_MSG_CHECKING([if kmap_atomic has only 1 argument])
1256 LB_LINUX_TRY_COMPILE([
1257         #include <linux/highmem.h>
1258 ],[
1259         kmap_atomic(NULL);
1260 ],[
1261         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1262                   [have kmap_atomic has only 1 argument])
1263         AC_MSG_RESULT([yes])
1264 ],[
1265         AC_MSG_RESULT([no])
1266 ])
1267 ])
1268
1269 #
1270 # 3.4 switchs touch_atime to struct path
1271 # see kernel commit 68ac1234fb949b66941d94dce4157742799fc581
1272 #
1273 AC_DEFUN([LC_TOUCH_ATIME_1ARG],
1274 [AC_MSG_CHECKING([if touch_atime use one argument])
1275 LB_LINUX_TRY_COMPILE([
1276         #include <linux/fs.h>
1277 ],[
1278         touch_atime((struct path *)NULL);
1279 ],[
1280         AC_DEFINE(HAVE_TOUCH_ATIME_1ARG, 1,
1281                   [touch_atime use one argument])
1282         AC_MSG_RESULT([yes])
1283 ],[
1284         AC_MSG_RESULT([no])
1285 ])
1286 ])
1287
1288 #
1289 # 3.4 converts d_alloc_root to d_make_root
1290 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1291 #
1292 AC_DEFUN([LC_HAVE_D_MAKE_ROOT],
1293 [AC_MSG_CHECKING([if have d_make_root])
1294 LB_LINUX_TRY_COMPILE([
1295         #include <linux/fs.h>
1296 ],[
1297         d_make_root((struct inode *)NULL);
1298 ],[
1299         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1300                   [have d_make_root])
1301         AC_MSG_RESULT([yes])
1302 ],[
1303         AC_MSG_RESULT([no])
1304 ])
1305 ])
1306
1307 #
1308 # 3.5 renames end_writeback() back to clear_inode()...
1309 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1310 #
1311 AC_DEFUN([LC_HAVE_CLEAR_INODE],
1312 [AC_MSG_CHECKING([if have clear_inode])
1313 LB_LINUX_TRY_COMPILE([
1314         #include <linux/fs.h>
1315 ],[
1316         clear_inode((struct inode *)NULL);
1317 ],[
1318         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1319                   [have clear_inode])
1320         AC_MSG_RESULT([yes])
1321 ],[
1322         AC_MSG_RESULT([no])
1323 ])
1324 ])
1325
1326 #
1327 # 3.5 encode_fh has parent inode passed in directly
1328 # see kernel commit b0b0382b
1329 #
1330 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT],
1331 [AC_MSG_CHECKING([if encode_fh have parent inode as parameter])
1332 tmp_flags="$EXTRA_KCFLAGS"
1333 EXTRA_KCFLAGS="-Werror"
1334 LB_LINUX_TRY_COMPILE([
1335         #include <linux/exportfs.h>
1336         #include <linux/fs.h>
1337         #include <linux/types.h>
1338         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1339         {
1340                 return 0;
1341         }
1342 ],[
1343         struct export_operations exp_op;
1344         exp_op.encode_fh = ll_encode_fh;
1345 ],[
1346         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1347                   [have parent inode as parameter])
1348         AC_MSG_RESULT([yes])
1349 ],[
1350         AC_MSG_RESULT([no])
1351 ])
1352 EXTRA_KCFLAGS="$tmp_flags"
1353 ])
1354
1355 # 3.5 has generic_file_llseek_size with 5 args
1356 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG],
1357 [AC_MSG_CHECKING([if kernel has generic_file_llseek_size with 5 args])
1358 LB_LINUX_TRY_COMPILE([
1359         #include <linux/fs.h>
1360 ],[
1361         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1362 ], [
1363         AC_MSG_RESULT([yes])
1364         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1365                 [kernel has generic_file_llseek_size with 5 args])
1366 ],[
1367         AC_MSG_RESULT([no])
1368 ])
1369 ])
1370
1371 #
1372 # 3.6 switch i_dentry/d_alias from list to hlist
1373 #
1374 AC_DEFUN([LC_HAVE_DENTRY_D_ALIAS_HLIST],
1375 [AC_MSG_CHECKING([if i_dentry/d_alias uses hlist])
1376 tmp_flags="$EXTRA_KCFLAGS"
1377 EXTRA_KCFLAGS="-Werror"
1378 LB_LINUX_TRY_COMPILE([
1379         #include <linux/fs.h>
1380         #include <linux/list.h>
1381 ],[
1382         struct inode inode;
1383         struct dentry dentry;
1384         struct hlist_head head;
1385         struct hlist_node node;
1386         inode.i_dentry = head;
1387         dentry.d_alias = node;
1388 ],[
1389         AC_DEFINE(HAVE_DENTRY_D_ALIAS_HLIST, 1,
1390                   [have i_dentry/d_alias uses hlist])
1391         AC_MSG_RESULT([yes])
1392 ],[
1393         AC_MSG_RESULT([no])
1394 ])
1395 EXTRA_KCFLAGS="$tmp_flags"
1396 ])
1397
1398 #
1399 # 3.6 dentry_open uses struct path as first argument
1400 # see kernel commit 765927b2
1401 #
1402 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH],
1403 [AC_MSG_CHECKING([if dentry_open uses struct path as first argument])
1404 tmp_flags="$EXTRA_KCFLAGS"
1405 EXTRA_KCFLAGS="-Werror"
1406 LB_LINUX_TRY_COMPILE([
1407         #include <linux/fs.h>
1408         #include <linux/path.h>
1409 ],[
1410         struct path path;
1411         dentry_open(&path, 0, NULL);
1412 ],[
1413         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1414                   [dentry_open uses struct path as first argument])
1415         AC_MSG_RESULT([yes])
1416 ],[
1417         AC_MSG_RESULT([no])
1418 ])
1419 EXTRA_KCFLAGS="$tmp_flags"
1420 ])
1421
1422 #
1423 # 3.6 vfs adds iop->atomic_open
1424 #
1425 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN],
1426 [AC_MSG_CHECKING([if iop has atomic_open])
1427 LB_LINUX_TRY_COMPILE([
1428         #include <linux/fs.h>
1429 ],[
1430         struct inode_operations iop;
1431         iop.atomic_open = NULL;
1432 ],[
1433         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1434                   [have iop atomic_open])
1435         AC_MSG_RESULT([yes])
1436 ],[
1437         AC_MSG_RESULT([no])
1438 ])
1439 ])
1440
1441 #
1442 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1443 #
1444 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS],
1445 [AC_MSG_CHECKING([if posix_acl_to_xattr takes struct user_namespace])
1446 LB_LINUX_TRY_COMPILE([
1447         #include <linux/fs.h>
1448         #include <linux/posix_acl_xattr.h>
1449 ],[
1450         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1451 ],[
1452         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1453                   [posix_acl_to_xattr takes struct user_namespace])
1454         AC_MSG_RESULT([yes])
1455 ],[
1456         AC_MSG_RESULT([no])
1457 ])
1458 ])
1459
1460 #
1461 # 3.9 uses hlist_for_each_entry with 3 args
1462 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1463 #
1464 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG],
1465 [AC_MSG_CHECKING([if hlist_for_each_entry has 3 args])
1466 LB_LINUX_TRY_COMPILE([
1467         #include <linux/list.h>
1468         #include <linux/fs.h>
1469 ],[
1470         struct inode *inode;
1471         struct dentry *dentry;
1472         hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
1473                 continue;
1474         }
1475 ],[
1476         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1, [3 args])
1477         AC_MSG_RESULT([yes])
1478 ],[
1479         AC_MSG_RESULT([no])
1480 ])
1481 ])
1482
1483 #
1484 # 3.9 killed f_vfsmnt by
1485 # 182be684784334598eee1d90274e7f7aa0063616
1486 # replacement is f_path.mnt
1487 #
1488 AC_DEFUN([LC_HAVE_F_PATH_MNT],
1489 [AC_MSG_CHECKING([if struct file has f_path.mnt])
1490 LB_LINUX_TRY_COMPILE([
1491         #include <linux/fs.h>
1492 ],[
1493         struct file *fp = NULL;
1494         struct path  path;
1495
1496         path.mnt = fp->f_path.mnt;
1497 ],[
1498         AC_DEFINE(HAVE_F_PATH_MNT,1,[yes])
1499         AC_MSG_RESULT([yes])
1500 ],[
1501         AC_MSG_RESULT([no])
1502 ])
1503 ])
1504
1505 #
1506 # LC_PROG_LINUX
1507 #
1508 # Lustre linux kernel checks
1509 #
1510 AC_DEFUN([LC_PROG_LINUX],
1511          [
1512          LC_CONFIG_PINGER
1513          LC_CONFIG_CHECKSUM
1514          LC_CONFIG_LIBLUSTRE_RECOVERY
1515          LC_CONFIG_HEALTH_CHECK_WRITE
1516          LC_CONFIG_LRU_RESIZE
1517          LC_LLITE_LLOOP_MODULE
1518
1519          # RHEL4 patches
1520          LC_EXPORT_TRUNCATE_COMPLETE
1521
1522          LC_BIT_SPINLOCK_H
1523
1524          LC_CAPA_CRYPTO
1525          LC_CONFIG_RMTCLIENT
1526          LC_CONFIG_GSS
1527
1528          # 2.6.12
1529          LC_RW_TREE_LOCK
1530
1531          #2.6.18 + RHEL5 (fc6)
1532          LC_LINUX_FIEMAP_H
1533
1534          # raid5-zerocopy patch
1535          LC_PAGE_CONSTANT
1536
1537          # 2.6.22
1538          LC_FS_RENAME_DOES_D_MOVE
1539
1540          # 2.6.23
1541          LC_UNREGISTER_BLKDEV_RETURN_INT
1542
1543          # 2.6.24
1544          LC_BIO_ENDIO_2ARG
1545          LC_PROCFS_DELETED
1546
1547          # 2.6.26
1548          LC_FS_STRUCT_USE_PATH
1549
1550          # 2.6.27
1551          LC_SECURITY_PLUG  # for SLES10 SP2
1552          LC_INODE_PERMISION_2ARGS
1553          LC_QUOTA_ON_5ARGS
1554          LC_QUOTA_OFF_3ARGS
1555
1556          # 2.6.27.15-2 sles11
1557          LC_BI_HW_SEGMENTS
1558          LC_HAVE_QUOTAIO_H
1559
1560          # 2.6.32
1561          LC_BLK_QUEUE_MAX_SEGMENTS
1562
1563          # 2.6.34
1564          LC_HAVE_DQUOT_FS_DISK_QUOTA
1565          LC_HAVE_DQUOT_SUSPEND
1566
1567          # 2.6.35, 3.0.0
1568          LC_FILE_FSYNC
1569          LC_EXPORT_SIMPLE_SETATTR
1570
1571          # 2.6.36
1572          LC_FS_STRUCT_RWLOCK
1573          LC_SBOPS_EVICT_INODE
1574
1575          # 2.6.37
1576          LC_KERNEL_LOCKED
1577
1578          # 2.6.38
1579          LC_BLKDEV_GET_BY_DEV
1580          LC_GENERIC_PERMISSION
1581          LC_QUOTA_ON_USE_PATH
1582          LC_DCACHE_LOCK
1583          LC_INODE_I_RCU
1584          LC_D_COMPARE_7ARGS
1585          LC_D_DELETE_CONST
1586
1587          # 2.6.39
1588          LC_REQUEST_QUEUE_UNPLUG_FN
1589          LC_HAVE_FSTYPE_MOUNT
1590
1591          # 3.0
1592          LC_DIRTY_INODE_WITH_FLAG
1593
1594          # 3.1
1595          LC_LM_XXX_LOCK_MANAGER_OPS
1596          LC_INODE_DIO_WAIT
1597          LC_IOP_GET_ACL
1598          LC_FILE_LLSEEK_SIZE
1599
1600          # 3.1.1
1601          LC_BLOCKS_FOR_TRUNCATE
1602
1603          # 3.2
1604          LC_HAVE_VOID_MAKE_REQUEST_FN
1605          LC_HAVE_PROTECT_I_NLINK
1606
1607          # 3.3
1608          LC_HAVE_MIGRATE_HEADER
1609          LC_MIGRATEPAGE_4ARGS
1610          LC_SUPEROPS_USE_DENTRY
1611          LC_INODEOPS_USE_UMODE_T
1612
1613          # 3.4
1614          LC_TOUCH_ATIME_1ARG
1615          LC_HAVE_D_MAKE_ROOT
1616          LC_KMAP_ATOMIC_HAS_1ARG
1617
1618          # 3.5
1619          LC_HAVE_CLEAR_INODE
1620          LC_HAVE_ENCODE_FH_PARENT
1621          LC_FILE_LLSEEK_SIZE_5ARG
1622
1623          # 3.6
1624          LC_HAVE_DENTRY_D_ALIAS_HLIST
1625          LC_DENTRY_OPEN_USE_PATH
1626          LC_HAVE_IOP_ATOMIC_OPEN
1627
1628          # 3.7
1629          LC_HAVE_POSIXACL_USER_NS
1630
1631          # 3.9
1632          LC_HAVE_HLIST_FOR_EACH_3ARG
1633          LC_HAVE_F_PATH_MNT
1634
1635          #
1636          if test x$enable_server = xyes ; then
1637                 AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
1638                 LC_FUNC_DEV_SET_RDONLY
1639                 LC_STACK_SIZE
1640                 LC_QUOTA64
1641                 LC_QUOTA_CONFIG
1642          fi
1643 ])
1644
1645 #
1646 # LC_CONFIG_CLIENT_SERVER
1647 #
1648 # Build client/server sides of Lustre
1649 #
1650 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
1651 [AC_MSG_CHECKING([whether to build Lustre server support])
1652 AC_ARG_ENABLE([server],
1653         AC_HELP_STRING([--disable-server],
1654                         [disable Lustre server support]),
1655         [],[enable_server='yes'])
1656 AC_MSG_RESULT([$enable_server])
1657
1658 AC_MSG_CHECKING([whether to build Lustre client support])
1659 AC_ARG_ENABLE([client],
1660         AC_HELP_STRING([--disable-client],
1661                         [disable Lustre client support]),
1662         [],[enable_client='yes'])
1663 AC_MSG_RESULT([$enable_client])])
1664
1665 #
1666 # LC_CONFIG_LIBLUSTRE
1667 #
1668 # whether to build liblustre
1669 #
1670 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1671 [AC_MSG_CHECKING([whether to build Lustre library])
1672 AC_ARG_ENABLE([liblustre],
1673         AC_HELP_STRING([--disable-liblustre],
1674                         [disable building of Lustre library]),
1675         [],[enable_liblustre=$with_sysio])
1676 AC_MSG_RESULT([$enable_liblustre])
1677 # only build sysio if liblustre is built
1678 with_sysio="$enable_liblustre"
1679
1680 AC_MSG_CHECKING([whether to build liblustre tests])
1681 AC_ARG_ENABLE([liblustre-tests],
1682         AC_HELP_STRING([--enable-liblustre-tests],
1683                         [enable liblustre tests, if --disable-tests is used]),
1684         [],[enable_liblustre_tests=$enable_tests])
1685 if test x$enable_liblustre != xyes ; then
1686    enable_liblustre_tests='no'
1687 fi
1688 AC_MSG_RESULT([$enable_liblustre_tests])
1689
1690 AC_MSG_CHECKING([whether to enable liblustre acl])
1691 AC_ARG_ENABLE([liblustre-acl],
1692         AC_HELP_STRING([--disable-liblustre-acl],
1693                         [disable ACL support for liblustre]),
1694         [],[enable_liblustre_acl=yes])
1695 AC_MSG_RESULT([$enable_liblustre_acl])
1696 if test x$enable_liblustre_acl = xyes ; then
1697   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1698 fi
1699
1700 #
1701 # --enable-mpitest
1702 #
1703 AC_ARG_ENABLE(mpitests,
1704         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
1705                            [include mpi tests]),
1706         [
1707          enable_mpitests=yes
1708          case $enableval in
1709          yes)
1710                 MPICC_WRAPPER=mpicc
1711                 ;;
1712          no)
1713                 enable_mpitests=no
1714                 ;;
1715          *)
1716                 MPICC_WRAPPER=$enableval
1717                  ;;
1718          esac
1719         ],
1720         [
1721         MPICC_WRAPPER=mpicc
1722         enable_mpitests=yes
1723         ]
1724 )
1725
1726 if test x$enable_mpitests != xno; then
1727         AC_MSG_CHECKING([whether mpitests can be built])
1728         oldcc=$CC
1729         CC=$MPICC_WRAPPER
1730         AC_LINK_IFELSE(
1731             [AC_LANG_PROGRAM([[
1732                     #include <mpi.h>
1733                 ]],[[
1734                     int flag;
1735                     MPI_Initialized(&flag);
1736                 ]])],
1737             [
1738                     AC_MSG_RESULT([yes])
1739             ],[
1740                     AC_MSG_RESULT([no])
1741                     enable_mpitests=no
1742         ])
1743         CC=$oldcc
1744 fi
1745 AC_SUBST(MPICC_WRAPPER)
1746
1747 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1748 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1749
1750 LC_CONFIG_PINGER
1751 LC_CONFIG_LIBLUSTRE_RECOVERY
1752 ])
1753
1754 #
1755 # LC_CONFIG_QUOTA
1756 #
1757 # whether to enable quota support global control
1758 #
1759 AC_DEFUN([LC_CONFIG_QUOTA],
1760 [AC_ARG_ENABLE([quota],
1761         AC_HELP_STRING([--enable-quota],
1762                         [enable quota support]),
1763         [],[enable_quota='yes'])
1764 ])
1765
1766 AC_DEFUN([LC_QUOTA],
1767 [#check global
1768 LC_CONFIG_QUOTA
1769 #check for utils
1770 AC_CHECK_HEADER(sys/quota.h,
1771                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
1772                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
1773 ])
1774
1775 #
1776 # LC_CONFIG_SPLIT
1777 #
1778 # whether to enable split support
1779 #
1780 AC_DEFUN([LC_CONFIG_SPLIT],
1781 [AC_MSG_CHECKING([whether to enable split support])
1782 AC_ARG_ENABLE([split],
1783         AC_HELP_STRING([--enable-split],
1784                         [enable split support]),
1785         [],[enable_split='no'])
1786 AC_MSG_RESULT([$enable_split])
1787 if test x$enable_split != xno; then
1788    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1789 fi
1790 ])
1791
1792 #
1793 # LC_LLITE_LLOOP_MODULE
1794 # lloop_llite.ko does not currently work with page sizes
1795 # of 64k or larger.
1796 #
1797 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
1798 [AC_MSG_CHECKING([whether to enable llite_lloop module])
1799 LB_LINUX_TRY_COMPILE([
1800         #include <asm/page.h>
1801 ],[
1802         #if PAGE_SIZE >= 65536
1803         #error "PAGE_SIZE >= 65536"
1804         #endif
1805 ],[
1806         enable_llite_lloop_module='yes'
1807         AC_MSG_RESULT([yes])
1808 ],[
1809         enable_llite_lloop_module='no'
1810         AC_MSG_RESULT([no])
1811 ])
1812 ])
1813
1814 #
1815 # LC_OSD_ADDON
1816 #
1817 # configure support for optional OSD implementation
1818 #
1819 AC_DEFUN([LC_OSD_ADDON],
1820 [AC_MSG_CHECKING([for osd])
1821 AC_ARG_WITH([osd],
1822         AC_HELP_STRING([--with-osd=path],
1823                        [set path to optional osd]),
1824         [
1825                 case $with_osd in
1826                         no)     ENABLEOSDADDON=0
1827                                 ;;
1828                         *)      OSDADDON="${with_osd}"
1829                                 ENABLEOSDADDON=1
1830                                 ;;
1831                 esac
1832         ], [
1833                 ENABLEOSDADDON=0
1834         ])
1835 if test $ENABLEOSDADDON -eq 0; then
1836         AC_MSG_RESULT([no])
1837         OSDADDON=
1838 else
1839         OSDMODNAME=`basename $OSDADDON`
1840         if test -e $LUSTRE/$OSDMODNAME; then
1841                 AC_MSG_RESULT([can't link])
1842                 OSDADDON=
1843         elif ln -s $OSDADDON $LUSTRE/$OSDMODNAME; then
1844                 AC_MSG_RESULT([$OSDMODNAME])
1845                 OSDADDON="subdir-m += $OSDMODNAME"
1846         else
1847                 AC_MSG_RESULT([can't link])
1848                 OSDADDON=
1849         fi
1850 fi
1851 AC_SUBST(OSDADDON)
1852 ])
1853
1854 #
1855 # LC_CONFIGURE
1856 #
1857 # other configure checks
1858 #
1859 AC_DEFUN([LC_CONFIGURE],
1860 [LC_CONFIG_OBD_BUFFER_SIZE
1861
1862 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
1863         CFLAGS="$CFLAGS -Werror"
1864 fi
1865
1866 # maximum MDS thread count
1867 LC_MDS_MAX_THREADS
1868
1869 # include/liblustre.h
1870 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1871
1872 # liblustre/llite_lib.h
1873 AC_CHECK_HEADERS([xtio.h file.h])
1874
1875 # liblustre/dir.c
1876 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1877
1878 # liblustre/lutil.c
1879 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1880 AC_CHECK_FUNCS([inet_ntoa])
1881
1882 # libsysio/src/readlink.c
1883 LC_READLINK_SSIZE_T
1884
1885 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
1886 AC_CHECK_HEADERS([linux/random.h], [], [],
1887                  [#ifdef HAVE_LINUX_TYPES_H
1888                   # include <linux/types.h>
1889                   #endif
1890                  ])
1891
1892 # utils/llverfs.c
1893 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1894
1895 # check for -lz support
1896 ZLIB=""
1897 AC_CHECK_LIB([z],
1898              [adler32],
1899              [AC_CHECK_HEADERS([zlib.h],
1900                                [ZLIB="-lz"
1901                                 AC_DEFINE([HAVE_ADLER], 1,
1902                                           [support alder32 checksum type])],
1903                                [AC_MSG_WARN([No zlib-devel package found,
1904                                              unable to use adler32 checksum])])],
1905              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
1906 )
1907 AC_SUBST(ZLIB)
1908
1909 SELINUX=""
1910 AC_CHECK_LIB([selinux],
1911                 [is_selinux_enabled],
1912                 [AC_CHECK_HEADERS([selinux.h],
1913                                 [SELINUX="-lselinux"
1914                                 AC_DEFINE([HAVE_SELINUX], 1,
1915                                                 [support for selinux ])],
1916                                 [AC_MSG_WARN([No selinux-devel package found,
1917                                                 unable to build selinux enabled
1918                                                 tools])])],
1919                 [AC_MSG_WARN([No selinux package found, unable to build selinux
1920                                 enabled tools])]
1921 )
1922 AC_SUBST(SELINUX)
1923
1924 # Super safe df
1925 AC_ARG_ENABLE([mindf],
1926       AC_HELP_STRING([--enable-mindf],
1927                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1928       [],[])
1929 if test "$enable_mindf" = "yes" ;  then
1930       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1931 fi
1932
1933 AC_ARG_ENABLE([fail_alloc],
1934         AC_HELP_STRING([--disable-fail-alloc],
1935                 [disable randomly alloc failure]),
1936         [],[enable_fail_alloc=yes])
1937 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1938 AC_MSG_RESULT([$enable_fail_alloc])
1939 if test x$enable_fail_alloc != xno ; then
1940         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1941 fi
1942
1943 AC_ARG_ENABLE([invariants],
1944         AC_HELP_STRING([--enable-invariants],
1945                 [enable invariant checking (cpu intensive)]),
1946         [],[])
1947 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
1948 AC_MSG_RESULT([$enable_invariants])
1949 if test x$enable_invariants = xyes ; then
1950         AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1, [enable invariant checking])
1951 fi
1952
1953 AC_ARG_ENABLE([lu_ref],
1954         AC_HELP_STRING([--enable-lu_ref],
1955                 [enable lu_ref reference tracking code]),
1956         [],[])
1957 AC_MSG_CHECKING([whether to track references with lu_ref])
1958 AC_MSG_RESULT([$enable_lu_ref])
1959 if test x$enable_lu_ref = xyes ; then
1960         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
1961 fi
1962
1963 AC_ARG_ENABLE([pgstate-track],
1964               AC_HELP_STRING([--enable-pgstate-track],
1965                              [enable page state tracking]),
1966               [enable_pgstat_track='yes'],[])
1967 AC_MSG_CHECKING([whether to enable page state tracking])
1968 AC_MSG_RESULT([$enable_pgstat_track])
1969 if test x$enable_pgstat_track = xyes ; then
1970         AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
1971                   [enable page state tracking code])
1972 fi
1973 ])
1974
1975 #
1976 # LC_CONDITIONALS
1977 #
1978 # AM_CONDITIONALS for lustre
1979 #
1980 AC_DEFUN([LC_CONDITIONALS],
1981 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1982 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
1983 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1984 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1985 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1986 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1987 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1988 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1989 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1990 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1991 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1992 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1993 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1994 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
1995 ])
1996
1997 #
1998 # LC_CONFIG_FILES
1999 #
2000 # files that should be generated with AC_OUTPUT
2001 #
2002 AC_DEFUN([LC_CONFIG_FILES],
2003 [AC_CONFIG_FILES([
2004 lustre/Makefile
2005 lustre/autoMakefile
2006 lustre/autoconf/Makefile
2007 lustre/conf/Makefile
2008 lustre/contrib/Makefile
2009 lustre/doc/Makefile
2010 lustre/include/Makefile
2011 lustre/include/lustre_ver.h
2012 lustre/include/linux/Makefile
2013 lustre/include/darwin/Makefile
2014 lustre/include/lustre/Makefile
2015 lustre/kernel_patches/targets/2.6-rhel6.target
2016 lustre/kernel_patches/targets/2.6-rhel5.target
2017 lustre/kernel_patches/targets/2.6-sles11.target
2018 lustre/kernel_patches/targets/3.0-sles11.target
2019 lustre/kernel_patches/targets/2.6-fc11.target
2020 lustre/kernel_patches/targets/2.6-fc12.target
2021 lustre/kernel_patches/targets/2.6-fc15.target
2022 lustre/kernel_patches/targets/3.x-fc18.target
2023 lustre/ldlm/Makefile
2024 lustre/fid/Makefile
2025 lustre/fid/autoMakefile
2026 lustre/liblustre/Makefile
2027 lustre/liblustre/tests/Makefile
2028 lustre/liblustre/tests/mpi/Makefile
2029 lustre/llite/Makefile
2030 lustre/llite/autoMakefile
2031 lustre/lclient/Makefile
2032 lustre/lov/Makefile
2033 lustre/lov/autoMakefile
2034 lustre/lvfs/Makefile
2035 lustre/lvfs/autoMakefile
2036 lustre/mdc/Makefile
2037 lustre/mdc/autoMakefile
2038 lustre/lmv/Makefile
2039 lustre/lmv/autoMakefile
2040 lustre/lfsck/Makefile
2041 lustre/lfsck/autoMakefile
2042 lustre/mdt/Makefile
2043 lustre/mdt/autoMakefile
2044 lustre/mdd/Makefile
2045 lustre/mdd/autoMakefile
2046 lustre/fld/Makefile
2047 lustre/fld/autoMakefile
2048 lustre/obdclass/Makefile
2049 lustre/obdclass/autoMakefile
2050 lustre/obdclass/linux/Makefile
2051 lustre/obdecho/Makefile
2052 lustre/obdecho/autoMakefile
2053 lustre/ofd/Makefile
2054 lustre/ofd/autoMakefile
2055 lustre/osc/Makefile
2056 lustre/osc/autoMakefile
2057 lustre/ost/Makefile
2058 lustre/ost/autoMakefile
2059 lustre/osd-ldiskfs/Makefile
2060 lustre/osd-ldiskfs/autoMakefile
2061 lustre/osd-zfs/Makefile
2062 lustre/osd-zfs/autoMakefile
2063 lustre/mgc/Makefile
2064 lustre/mgc/autoMakefile
2065 lustre/mgs/Makefile
2066 lustre/mgs/autoMakefile
2067 lustre/target/Makefile
2068 lustre/ptlrpc/Makefile
2069 lustre/ptlrpc/autoMakefile
2070 lustre/ptlrpc/gss/Makefile
2071 lustre/ptlrpc/gss/autoMakefile
2072 lustre/quota/Makefile
2073 lustre/quota/autoMakefile
2074 lustre/scripts/Makefile
2075 lustre/tests/Makefile
2076 lustre/tests/mpi/Makefile
2077 lustre/utils/Makefile
2078 lustre/utils/gss/Makefile
2079 lustre/osp/Makefile
2080 lustre/osp/autoMakefile
2081 lustre/lod/Makefile
2082 lustre/lod/autoMakefile
2083 lustre/obdclass/darwin/Makefile
2084 ])
2085 ])