lustre/autoconf/lustre-core.m4

   1 #* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2 #* vim:expandtab:shiftwidth=8:tabstop=8:
   3 #
   4 # LC_CONFIG_SRCDIR
   5 #
   6 # Wrapper for AC_CONFIG_SUBDIR
   7 #
   8 AC_DEFUN([LC_CONFIG_SRCDIR],
   9 [AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
  10 libcfs_is_module=yes
  11 ])
  12
  13 #
  14 # LC_PATH_DEFAULTS
  15 #
  16 # lustre specific paths
  17 #
  18 AC_DEFUN([LC_PATH_DEFAULTS],
  19 [# ptlrpc kernel build requires this
  20 LUSTRE="$PWD/lustre"
  21 AC_SUBST(LUSTRE)
  22
  23 # mount.lustre
  24 rootsbindir='/sbin'
  25 AC_SUBST(rootsbindir)
  26
  27 demodir='$(docdir)/demo'
  28 AC_SUBST(demodir)
  29
  30 pkgexampledir='${pkgdatadir}/examples'
  31 AC_SUBST(pkgexampledir)
  32 ])
  33
  34 #
  35 # LC_TARGET_SUPPORTED
  36 #
  37 # is the target os supported?
  38 #
  39 AC_DEFUN([LC_TARGET_SUPPORTED],
  40 [case $target_os in
  41         linux* | darwin*)
  42 $1
  43                 ;;
  44         *)
  45 $2
  46                 ;;
  47 esac
  48 ])
  49
  50 #
  51 # Ensure stack size big than 8k in Lustre server (all kernels)
  52 #
  53 AC_DEFUN([LC_STACK_SIZE],
  54 [AC_MSG_CHECKING([stack size big than 8k])
  55 LB_LINUX_TRY_COMPILE([
  56         #include <linux/thread_info.h>
  57 ],[
  58         #if THREAD_SIZE < 8192
  59         #error "stack size < 8192"
  60         #endif
  61 ],[
  62         AC_MSG_RESULT(yes)
  63 ],[
  64         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
  65 ])
  66 ])
  67
  68 #
  69 # LC_FUNC_DEV_SET_RDONLY
  70 #
  71 # check for the old-style dev_set_rdonly which took an extra "devno" param
  72 # and can only set a single device to discard writes at one time
  73 #
  74 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
  75 [AC_MSG_CHECKING([if kernel has new dev_set_rdonly])
  76 LB_LINUX_TRY_COMPILE([
  77         #include <linux/fs.h>
  78         #include <linux/blkdev.h>
  79 ],[
  80         #ifndef HAVE_CLEAR_RDONLY_ON_PUT
  81         #error needs to be patched by lustre kernel patches from Lustre version 1.4.3 or above.
  82         #endif
  83 ],[
  84         AC_MSG_RESULT([yes])
  85         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel has new dev_set_rdonly])
  86 ],[
  87         AC_MSG_ERROR([no, Linux kernel source needs to be patches by lustre
  88 kernel patches from Lustre version 1.4.3 or above.])
  89 ])
  90 ])
  91
  92 #
  93 # LC_CONFIG_BACKINGFS
  94 #
  95 # setup, check the backing filesystem
  96 #
  97 AC_DEFUN([LC_CONFIG_BACKINGFS],
  98 [
  99 BACKINGFS="ldiskfs"
 100
 101 if test x$with_ldiskfs = xno ; then
 102         if test x$linux25$enable_server = xyesyes ; then
 103                 AC_MSG_ERROR([ldiskfs is required for 2.6-based servers.])
 104         fi
 105 else
 106         # ldiskfs is enabled
 107         LB_DEFINE_LDISKFS_OPTIONS
 108 fi #ldiskfs
 109
 110 AC_MSG_CHECKING([which backing filesystem to use])
 111 AC_MSG_RESULT([$BACKINGFS])
 112 AC_SUBST(BACKINGFS)
 113 ])
 114
 115 #
 116 # LC_CONFIG_PINGER
 117 #
 118 # the pinger is temporary, until we have the recovery node in place
 119 #
 120 AC_DEFUN([LC_CONFIG_PINGER],
 121 [AC_MSG_CHECKING([whether to enable pinger support])
 122 AC_ARG_ENABLE([pinger],
 123         AC_HELP_STRING([--disable-pinger],
 124                         [disable recovery pinger support]),
 125         [],[enable_pinger='yes'])
 126 AC_MSG_RESULT([$enable_pinger])
 127 if test x$enable_pinger != xno ; then
 128   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 129 fi
 130 ])
 131
 132 #
 133 # LC_CONFIG_CHECKSUM
 134 #
 135 # do checksum of bulk data between client and OST
 136 #
 137 AC_DEFUN([LC_CONFIG_CHECKSUM],
 138 [AC_MSG_CHECKING([whether to enable data checksum support])
 139 AC_ARG_ENABLE([checksum],
 140        AC_HELP_STRING([--disable-checksum],
 141                        [disable data checksum support]),
 142        [],[enable_checksum='yes'])
 143 AC_MSG_RESULT([$enable_checksum])
 144 if test x$enable_checksum != xno ; then
 145   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 146 fi
 147 ])
 148
 149 #
 150 # LC_HEADER_LDISKFS_XATTR
 151 #
 152 # CHAOS kernel-devel package will not include fs/ldiskfs/xattr.h
 153 #
 154 AC_DEFUN([LC_HEADER_LDISKFS_XATTR],
 155 [AC_MSG_CHECKING([if ldiskfs has xattr.h header])
 156 tmp_flags="$EXTRA_KCFLAGS"
 157 EXTRA_KCFLAGS="-I$LINUX/fs -I$LDISKFS_DIR -I$LDISKFS_DIR/ldiskfs"
 158 LB_LINUX_TRY_COMPILE([
 159         #include <ldiskfs/xattr.h>
 160 ],[
 161         ldiskfs_xattr_get(NULL, 0, "", NULL, 0);
 162         ldiskfs_xattr_set_handle(NULL, NULL, 0, "", NULL, 0, 0);
 163
 164 ],[
 165         AC_MSG_RESULT([yes])
 166         AC_DEFINE(HAVE_LDISKFS_XATTR_H, 1, [ldiskfs/xattr.h found])
 167 ],[
 168         AC_MSG_RESULT([no])
 169 ])
 170 EXTRA_KCFLAGS="$tmp_flags"
 171 ])
 172
 173 #
 174 # LC_CONFIG_HEALTH_CHECK_WRITE
 175 #
 176 # Turn off the actual write to the disk
 177 #
 178 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 179 [AC_MSG_CHECKING([whether to enable a write with the health check])
 180 AC_ARG_ENABLE([health_write],
 181         AC_HELP_STRING([--enable-health_write],
 182                         [enable disk writes when doing health check]),
 183         [],[enable_health_write='no'])
 184 AC_MSG_RESULT([$enable_health_write])
 185 if test x$enable_health_write != xno ; then
 186   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 187 fi
 188 ])
 189
 190 #
 191 # LC_CONFIG_LIBLUSTRE_RECOVERY
 192 #
 193 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 194 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 195 AC_ARG_ENABLE([liblustre-recovery],
 196         AC_HELP_STRING([--disable-liblustre-recovery],
 197                         [disable liblustre recovery support]),
 198         [],[enable_liblustre_recovery='yes'])
 199 AC_MSG_RESULT([$enable_liblustre_recovery])
 200 if test x$enable_liblustre_recovery != xno ; then
 201   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 202 fi
 203 ])
 204
 205 #
 206 # LC_CONFIG_OBD_BUFFER_SIZE
 207 #
 208 # the maximum buffer size of lctl ioctls
 209 #
 210 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
 211 [AC_MSG_CHECKING([maximum OBD ioctl size])
 212 AC_ARG_WITH([obd-buffer-size],
 213         AC_HELP_STRING([--with-obd-buffer-size=[size]],
 214                         [set lctl ioctl maximum bytes (default=8192)]),
 215         [
 216                 OBD_BUFFER_SIZE=$with_obd_buffer_size
 217         ],[
 218                 OBD_BUFFER_SIZE=8192
 219         ])
 220 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
 221 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
 222 ])
 223
 224 #
 225 # LC_STRUCT_STATFS
 226 #
 227 # AIX does not have statfs.f_namelen
 228 #
 229 AC_DEFUN([LC_STRUCT_STATFS],
 230 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
 231 LB_LINUX_TRY_COMPILE([
 232         #include <linux/vfs.h>
 233 ],[
 234         struct statfs sfs;
 235         sfs.f_namelen = 1;
 236 ],[
 237         AC_MSG_RESULT([yes])
 238         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
 239 ],[
 240         AC_MSG_RESULT([no])
 241 ])
 242 ])
 243
 244 #
 245 # LC_READLINK_SSIZE_T
 246 #
 247 AC_DEFUN([LC_READLINK_SSIZE_T],
 248 [AC_MSG_CHECKING([if readlink returns ssize_t])
 249 AC_TRY_COMPILE([
 250         #include <unistd.h>
 251 ],[
 252         ssize_t readlink(const char *, char *, size_t);
 253 ],[
 254         AC_MSG_RESULT([yes])
 255         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
 256 ],[
 257         AC_MSG_RESULT([no])
 258 ])
 259 ])
 260
 261 #
 262 # LC_FUNC_MS_FLOCK_LOCK
 263 #
 264 # 2.6.5 kernel has MS_FLOCK_LOCK sb flag
 265 #
 266 AC_DEFUN([LC_FUNC_MS_FLOCK_LOCK],
 267 [AC_MSG_CHECKING([if kernel has MS_FLOCK_LOCK sb flag])
 268 LB_LINUX_TRY_COMPILE([
 269         #include <linux/fs.h>
 270 ],[
 271         int flags = MS_FLOCK_LOCK;
 272 ],[
 273         AC_DEFINE(HAVE_MS_FLOCK_LOCK, 1,
 274                 [kernel has MS_FLOCK_LOCK flag])
 275         AC_MSG_RESULT([yes])
 276 ],[
 277         AC_MSG_RESULT([no])
 278 ])
 279 ])
 280
 281 #
 282 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 283 #
 284 # 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
 285 #
 286 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 287 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 288 LB_LINUX_TRY_COMPILE([
 289         #include <linux/fs.h>
 290 ],[
 291         int cansleep;
 292         struct file *file;
 293         struct file_lock *file_lock;
 294         flock_lock_file_wait(file, file_lock, cansleep);
 295 ],[
 296         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 297                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 298         AC_MSG_RESULT([yes])
 299 ],[
 300         AC_MSG_RESULT([no])
 301 ])
 302 ])
 303
 304 #
 305 # LC_FUNC_RELEASEPAGE_WITH_GFP
 306 #
 307 # 2.6.9 ->releasepage() takes a gfp_t arg
 308 # This kernel defines gfp_t (HAS_GFP_T) but doesn't use it for this function,
 309 # while others either don't have gfp_t or pass gfp_t as the parameter.
 310 #
 311 AC_DEFUN([LC_FUNC_RELEASEPAGE_WITH_GFP],
 312 [AC_MSG_CHECKING([if releasepage has a gfp_t parameter])
 313 RELEASEPAGE_WITH_GFP="$(grep -c 'releasepage.*gfp_t' $LINUX/include/linux/fs.h)"
 314 if test "$RELEASEPAGE_WITH_GFP" != 0 ; then
 315         AC_DEFINE(HAVE_RELEASEPAGE_WITH_GFP, 1,
 316                   [releasepage with gfp_t parameter])
 317         AC_MSG_RESULT([yes])
 318 else
 319         AC_MSG_RESULT([no])
 320 fi
 321 ])
 322
 323 #
 324 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
 325 #
 326 AC_DEFUN([LC_FILEMAP_POPULATE],
 327 [AC_MSG_CHECKING([for exported filemap_populate])
 328 LB_LINUX_TRY_COMPILE([
 329         #include <asm/page.h>
 330         #include <linux/mm.h>
 331 ],[
 332        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 333 ],[
 334         AC_MSG_RESULT([yes])
 335         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 336 ],[
 337         AC_MSG_RESULT([no])
 338 ])
 339 ])
 340
 341 #
 342 # added in 2.6.15
 343 #
 344 AC_DEFUN([LC_D_ADD_UNIQUE],
 345 [AC_MSG_CHECKING([for d_add_unique])
 346 LB_LINUX_TRY_COMPILE([
 347         #include <linux/dcache.h>
 348 ],[
 349        d_add_unique(NULL, NULL);
 350 ],[
 351         AC_MSG_RESULT([yes])
 352         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
 353 ],[
 354         AC_MSG_RESULT([no])
 355 ])
 356 ])
 357
 358 #
 359 # added in 2.6.17
 360 #
 361 AC_DEFUN([LC_BIT_SPINLOCK_H],
 362 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 363         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 364         LB_LINUX_TRY_COMPILE([
 365                 #include <asm/processor.h>
 366                 #include <linux/spinlock.h>
 367                 #include <linux/bit_spinlock.h>
 368         ],[],[
 369                 AC_MSG_RESULT([yes])
 370                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 371         ],[
 372                 AC_MSG_RESULT([no])
 373         ])
 374 ],
 375 [])
 376 ])
 377
 378 #
 379 # After 2.6.26 we no longer have xattr_acl.h
 380 #
 381 AC_DEFUN([LC_XATTR_ACL],
 382 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
 383         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 384         LB_LINUX_TRY_COMPILE([
 385                 #include <linux/xattr_acl.h>
 386         ],[],[
 387                 AC_MSG_RESULT([yes])
 388                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 389         ],[
 390                 AC_MSG_RESULT([no])
 391         ])
 392 ],
 393 [])
 394 ])
 395
 396
 397 #
 398 # added in 2.6.16
 399 #
 400 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 401 [AC_MSG_CHECKING([if struct open_intent has a file field])
 402 LB_LINUX_TRY_COMPILE([
 403         #include <linux/fs.h>
 404         #include <linux/namei.h>
 405 ],[
 406         struct open_intent intent;
 407         &intent.file;
 408 ],[
 409         AC_MSG_RESULT([yes])
 410         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 411 ],[
 412         AC_MSG_RESULT([no])
 413 ])
 414 ])
 415
 416
 417 #
 418 # After 2.6.16 the xattr_acl API is removed, and posix_acl is used instead
 419 #
 420 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
 421 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
 422         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
 423         LB_LINUX_TRY_COMPILE([
 424                 #include <linux/posix_acl_xattr.h>
 425         ],[],[
 426                 AC_MSG_RESULT([yes])
 427                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 428
 429         ],[
 430                 AC_MSG_RESULT([no])
 431         ])
 432 $1
 433 ],[
 434 AC_MSG_RESULT([no])
 435 ])
 436 ])
 437
 438 #
 439 # LC_EXPORT___IGET
 440 # starting from 2.6.19 linux kernel exports __iget()
 441 #
 442 AC_DEFUN([LC_EXPORT___IGET],
 443 [LB_CHECK_SYMBOL_EXPORT([__iget],
 444 [fs/inode.c],[
 445         AC_DEFINE(HAVE_EXPORT___IGET, 1, [kernel exports __iget])
 446 ],[
 447 ])
 448 ])
 449
 450 #
 451 # only for Lustre-patched kernels
 452 #
 453 AC_DEFUN([LC_LUSTRE_VERSION_H],
 454 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 455         rm -f "$LUSTRE/include/linux/lustre_version.h"
 456 ],[
 457         touch "$LUSTRE/include/linux/lustre_version.h"
 458         if test x$enable_server = xyes ; then
 459                 AC_MSG_WARN([Unpatched kernel detected.])
 460                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
 461                 AC_MSG_WARN([disabling server build])
 462                 enable_server='no'
 463         fi
 464 ])
 465 ])
 466
 467 #
 468 # LC_CAPA_CRYPTO
 469 #
 470 AC_DEFUN([LC_CAPA_CRYPTO],
 471 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 472         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 473 ])
 474 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 475         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 476 ])
 477 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 478         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 479 ])
 480 ])
 481
 482 #
 483 # LC_CONFIG_RMTCLIENT
 484 #
 485 dnl FIXME
 486 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 487 dnl FIXME
 488 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 489 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 490         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 491 ])
 492 ])
 493
 494 AC_DEFUN([LC_SUNRPC_CACHE],
 495 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 496 LB_LINUX_TRY_COMPILE([
 497         #include <linux/sunrpc/cache.h>
 498 ],[
 499         struct cache_head ch;
 500         &ch.ref.refcount;
 501 ],[
 502         AC_MSG_RESULT([yes])
 503         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 504 ],[
 505         AC_MSG_RESULT([no])
 506 ])
 507 ])
 508
 509 AC_DEFUN([LC_CONFIG_SUNRPC],
 510 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 511                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 512  LC_SUNRPC_CACHE
 513 ])
 514
 515 #
 516 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 517 #
 518 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 519 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 520  AC_ARG_ENABLE([gss_keyring],
 521                [AC_HELP_STRING([--disable-gss-keyring],
 522                                [disable gss keyring backend])],
 523                [],[enable_gss_keyring='yes'])
 524  AC_MSG_RESULT([$enable_gss_keyring])
 525
 526  if test x$enable_gss_keyring != xno; then
 527         LB_LINUX_CONFIG_IM([KEYS],[],
 528                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 529
 530         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 531                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 532
 533         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 534                   [Define this if you enable gss keyring backend])
 535  fi
 536 ])
 537
 538 #
 539 # LC_CONFIG_GSS (default disabled)
 540 #
 541 # Build gss and related tools of Lustre. Currently both kernel and user space
 542 # parts are depend on linux platform.
 543 #
 544 AC_DEFUN([LC_CONFIG_GSS],
 545 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 546  AC_ARG_ENABLE([gss],
 547                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 548                [],[enable_gss='no'])
 549  AC_MSG_RESULT([$enable_gss])
 550
 551  if test x$enable_gss == xyes; then
 552         LC_CONFIG_GSS_KEYRING
 553         LC_CONFIG_SUNRPC
 554
 555         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 556
 557         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 558                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 559         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 560                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 561         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 562                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 563         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 564                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 565
 566         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 567                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 568                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 569                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 570                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 571
 572         AC_SUBST(GSSAPI_LIBS)
 573
 574         AC_KERBEROS_V5
 575  fi
 576 ])
 577
 578 # LC_EXPORT_SYNCHRONIZE_RCU
 579 # after 2.6.12 synchronize_rcu is preferred over synchronize_kernel
 580 AC_DEFUN([LC_EXPORT_SYNCHRONIZE_RCU],
 581 [LB_CHECK_SYMBOL_EXPORT([synchronize_rcu],
 582 [kernel/rcupdate.c],[
 583         AC_DEFINE(HAVE_SYNCHRONIZE_RCU, 1,
 584                 [in 2.6.12 synchronize_rcu preferred over synchronize_kernel])
 585 ],[
 586 ])
 587 ])
 588
 589 # LC_INODE_I_MUTEX
 590 # after 2.6.15 inode have i_mutex intead of i_sem
 591 AC_DEFUN([LC_INODE_I_MUTEX],
 592 [AC_MSG_CHECKING([if inode has i_mutex ])
 593 LB_LINUX_TRY_COMPILE([
 594         #include <linux/mutex.h>
 595         #include <linux/fs.h>
 596         #undef i_mutex
 597 ],[
 598         struct inode i;
 599
 600         mutex_unlock(&i.i_mutex);
 601 ],[
 602         AC_MSG_RESULT(yes)
 603         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 604                 [after 2.6.15 inode have i_mutex intead of i_sem])
 605 ],[
 606         AC_MSG_RESULT(no)
 607 ])
 608 ])
 609
 610 # LC_SEQ_LOCK
 611 # after 2.6.18 seq_file has lock intead of sem
 612 AC_DEFUN([LC_SEQ_LOCK],
 613 [AC_MSG_CHECKING([if struct seq_file has lock field])
 614 LB_LINUX_TRY_COMPILE([
 615         #include <linux/seq_file.h>
 616 ],[
 617         struct seq_file seq;
 618
 619         mutex_unlock(&seq.lock);
 620 ],[
 621         AC_MSG_RESULT(yes)
 622         AC_DEFINE(HAVE_SEQ_LOCK, 1,
 623                 [after 2.6.18 seq_file has lock intead of sem])
 624 ],[
 625         AC_MSG_RESULT(NO)
 626 ])
 627 ])
 628
 629 # LC_DQUOTOFF_MUTEX
 630 # after 2.6.17 dquote use mutex instead if semaphore
 631 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 632 [AC_MSG_CHECKING([use dqonoff_mutex])
 633 LB_LINUX_TRY_COMPILE([
 634         #include <linux/mutex.h>
 635         #include <linux/fs.h>
 636         #include <linux/quota.h>
 637 ],[
 638         struct quota_info dq;
 639
 640         mutex_unlock(&dq.dqonoff_mutex);
 641 ],[
 642         AC_MSG_RESULT(yes)
 643         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 644                 [after 2.6.17 dquote use mutex instead if semaphore])
 645 ],[
 646         AC_MSG_RESULT(no)
 647 ])
 648 ])
 649
 650 #
 651 # LC_STATFS_DENTRY_PARAM
 652 # starting from 2.6.18 linux kernel uses dentry instead of
 653 # super_block for first vfs_statfs argument
 654 #
 655 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 656 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
 657 LB_LINUX_TRY_COMPILE([
 658         #include <linux/fs.h>
 659 ],[
 660         int vfs_statfs(struct dentry *, struct kstatfs *);
 661 ],[
 662         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 663                 [first parameter of vfs_statfs is dentry])
 664         AC_MSG_RESULT([yes])
 665 ],[
 666         AC_MSG_RESULT([no])
 667 ])
 668 ])
 669
 670 #
 671 # LC_VFS_KERN_MOUNT
 672 # starting from 2.6.18 kernel don't export do_kern_mount
 673 # and want to use vfs_kern_mount instead.
 674 #
 675 AC_DEFUN([LC_VFS_KERN_MOUNT],
 676 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
 677 LB_LINUX_TRY_COMPILE([
 678         #include <linux/mount.h>
 679 ],[
 680         vfs_kern_mount(NULL, 0, NULL, NULL);
 681 ],[
 682         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
 683                 [vfs_kern_mount exist in kernel])
 684         AC_MSG_RESULT([yes])
 685 ],[
 686         AC_MSG_RESULT([no])
 687 ])
 688 ])
 689
 690 #
 691 # LC_INVALIDATEPAGE_RETURN_INT
 692 # 2.6.17 changes return type for invalidatepage to 'void' from 'int'
 693 #
 694 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
 695 [AC_MSG_CHECKING([invalidatepage has return int])
 696 LB_LINUX_TRY_COMPILE([
 697         #include <linux/buffer_head.h>
 698 ],[
 699         int rc = block_invalidatepage(NULL, 0);
 700 ],[
 701         AC_MSG_RESULT(yes)
 702         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
 703                 [Define if return type of invalidatepage should be int])
 704 ],[
 705         AC_MSG_RESULT(no)
 706 ])
 707 ])
 708
 709 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 710 # after 2.6.18 umount_begin has different parameters
 711 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 712 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 713 tmp_flags="$EXTRA_KCFLAGS"
 714 EXTRA_KCFLAGS="-Werror"
 715 LB_LINUX_TRY_COMPILE([
 716         #include <linux/fs.h>
 717
 718         struct vfsmount;
 719         static void cfg_umount_begin (struct vfsmount *v, int flags)
 720         {
 721                 ;
 722         }
 723
 724         static struct super_operations cfg_super_operations = {
 725                 .umount_begin   = cfg_umount_begin,
 726         };
 727 ],[
 728         cfg_super_operations.umount_begin(NULL,0);
 729 ],[
 730         AC_MSG_RESULT(yes)
 731         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
 732                 [Define umount_begin need second argument])
 733 ],[
 734         AC_MSG_RESULT(no)
 735 ])
 736 EXTRA_KCFLAGS="$tmp_flags"
 737 ])
 738
 739 # inode have i_private field since 2.6.17
 740 AC_DEFUN([LC_INODE_IPRIVATE],
 741 [AC_MSG_CHECKING([if inode has a i_private field])
 742 LB_LINUX_TRY_COMPILE([
 743 #include <linux/fs.h>
 744 ],[
 745         struct inode i;
 746         i.i_private = NULL;
 747 ],[
 748         AC_MSG_RESULT(yes)
 749         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
 750                 [struct inode has i_private field])
 751 ],[
 752         AC_MSG_RESULT(no)
 753 ])
 754 ])
 755
 756 # 2.6.19 API changes
 757 # inode don't have i_blksize field
 758 AC_DEFUN([LC_INODE_BLKSIZE],
 759 [AC_MSG_CHECKING([inode has i_blksize field])
 760 LB_LINUX_TRY_COMPILE([
 761 #include <linux/fs.h>
 762 ],[
 763         struct inode i;
 764         i.i_blksize = 0;
 765 ],[
 766         AC_MSG_RESULT(yes)
 767         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
 768                 [struct inode has i_blksize field])
 769 ],[
 770         AC_MSG_RESULT(no)
 771 ])
 772 ])
 773
 774 # LC_VFS_READDIR_U64_INO
 775 # 2.6.19 use u64 for inode number instead of inode_t
 776 AC_DEFUN([LC_VFS_READDIR_U64_INO],
 777 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
 778 tmp_flags="$EXTRA_KCFLAGS"
 779 EXTRA_KCFLAGS="-Werror"
 780 LB_LINUX_TRY_COMPILE([
 781 #include <linux/fs.h>
 782         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
 783                       u64 ino, unsigned int d_type)
 784         {
 785                 return 0;
 786         }
 787 ],[
 788         filldir_t filter;
 789
 790         filter = fillonedir;
 791         return 1;
 792 ],[
 793         AC_MSG_RESULT(yes)
 794         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
 795                 [if vfs_readdir need 64bit inode number])
 796 ],[
 797         AC_MSG_RESULT(no)
 798 ])
 799 EXTRA_KCFLAGS="$tmp_flags"
 800 ])
 801
 802 # LC_FILE_WRITEV
 803 # 2.6.19 replaced writev with aio_write
 804 AC_DEFUN([LC_FILE_WRITEV],
 805 [AC_MSG_CHECKING([writev in fops])
 806 LB_LINUX_TRY_COMPILE([
 807         #include <linux/fs.h>
 808 ],[
 809         struct file_operations *fops = NULL;
 810         fops->writev = NULL;
 811 ],[
 812         AC_MSG_RESULT(yes)
 813         AC_DEFINE(HAVE_FILE_WRITEV, 1,
 814                 [use fops->writev])
 815 ],[
 816         AC_MSG_RESULT(no)
 817 ])
 818 ])
 819
 820 # LC_GENERIC_FILE_READ
 821 # 2.6.19 replaced readv with aio_read
 822 AC_DEFUN([LC_FILE_READV],
 823 [AC_MSG_CHECKING([readv in fops])
 824 LB_LINUX_TRY_COMPILE([
 825         #include <linux/fs.h>
 826 ],[
 827         struct file_operations *fops = NULL;
 828         fops->readv = NULL;
 829 ],[
 830         AC_MSG_RESULT(yes)
 831         AC_DEFINE(HAVE_FILE_READV, 1,
 832                 [use fops->readv])
 833 ],[
 834         AC_MSG_RESULT(no)
 835 ])
 836 ])
 837
 838 # LC_NR_PAGECACHE
 839 # 2.6.18 don't export nr_pagecahe
 840 AC_DEFUN([LC_NR_PAGECACHE],
 841 [AC_MSG_CHECKING([kernel export nr_pagecache])
 842 LB_LINUX_TRY_COMPILE([
 843         #include <linux/pagemap.h>
 844 ],[
 845         return atomic_read(&nr_pagecache);
 846 ],[
 847         AC_MSG_RESULT(yes)
 848         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 849                 [is kernel export nr_pagecache])
 850 ],[
 851         AC_MSG_RESULT(no)
 852 ])
 853 ])
 854
 855 # LC_CANCEL_DIRTY_PAGE
 856 # 2.6.20 introduse cancel_dirty_page instead of
 857 # clear_page_dirty.
 858 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
 859 [AC_MSG_CHECKING([kernel has cancel_dirty_page])
 860 LB_LINUX_TRY_COMPILE([
 861         #include <linux/mm.h>
 862         #include <linux/page-flags.h>
 863 ],[
 864         /* tmp workaround for broken OFED 1.4.1 at SLES10 */
 865         #if defined(CONFIG_SLE_VERSION) && CONFIG_SLE_VERSION == 10 && defined(_BACKPORT_LINUX_MM_H_)
 866         #error badly implementation of cancel_dirty_pages
 867         #endif
 868         cancel_dirty_page(NULL, 0);
 869 ],[
 870         AC_MSG_RESULT(yes)
 871         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
 872                   [kernel has cancel_dirty_page instead of clear_page_dirty])
 873 ],[
 874         AC_MSG_RESULT(no)
 875 ])
 876 ])
 877
 878 #
 879 # LC_PAGE_CONSTANT
 880 #
 881 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
 882 # it support constant page, which means the page won't be modified during the
 883 # IO.
 884 #
 885 AC_DEFUN([LC_PAGE_CONSTANT],
 886 [AC_MSG_CHECKING([if kernel have PageConstant defined])
 887 LB_LINUX_TRY_COMPILE([
 888         #include <linux/mm.h>
 889         #include <linux/page-flags.h>
 890 ],[
 891         #ifndef PG_constant
 892         #error "Have no raid5 zcopy patch"
 893         #endif
 894 ],[
 895         AC_MSG_RESULT(yes)
 896         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
 897 ],[
 898         AC_MSG_RESULT(no);
 899 ])
 900 ])
 901
 902 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
 903 AC_DEFUN([LC_PG_FS_MISC],
 904 [AC_MSG_CHECKING([kernel has PG_fs_misc])
 905 LB_LINUX_TRY_COMPILE([
 906         #include <linux/mm.h>
 907         #include <linux/page-flags.h>
 908 ],[
 909         #ifndef PG_fs_misc
 910         #error PG_fs_misc not defined in kernel
 911         #endif
 912 ],[
 913         AC_MSG_RESULT(yes)
 914         AC_DEFINE(HAVE_PG_FS_MISC, 1,
 915                   [is kernel have PG_fs_misc])
 916 ],[
 917         AC_MSG_RESULT(no)
 918 ])
 919 ])
 920
 921 # RHEL5 PageChecked and SetPageChecked defined
 922 AC_DEFUN([LC_PAGE_CHECKED],
 923 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
 924 LB_LINUX_TRY_COMPILE([
 925         #include <linux/mm.h>
 926         #include <linux/page-flags.h>
 927 ],[
 928         #ifndef PageChecked
 929         #error PageChecked not defined in kernel
 930         #endif
 931         #ifndef SetPageChecked
 932         #error SetPageChecked not defined in kernel
 933         #endif
 934 ],[
 935         AC_MSG_RESULT(yes)
 936         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
 937                   [does kernel have PageChecked and SetPageChecked])
 938 ],[
 939         AC_MSG_RESULT(no)
 940 ])
 941 ])
 942
 943 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 944 [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 945 [mm/truncate.c],[
 946 AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 947             [kernel export truncate_complete_page])
 948 ],[
 949 ])
 950 ])
 951
 952 AC_DEFUN([LC_EXPORT_TRUNCATE_RANGE],
 953 [LB_CHECK_SYMBOL_EXPORT([truncate_inode_pages_range],
 954 [mm/truncate.c],[
 955 AC_DEFINE(HAVE_TRUNCATE_RANGE, 1,
 956             [kernel export truncate_inode_pages_range])
 957 ],[
 958 ])
 959 ])
 960
 961 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
 962 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
 963 [fs/dcache.c],[
 964 AC_DEFINE(HAVE_D_REHASH_COND, 1,
 965             [d_rehash_cond is exported by the kernel])
 966 ],[
 967 ])
 968 ])
 969
 970 AC_DEFUN([LC_EXPORT___D_REHASH],
 971 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
 972 [fs/dcache.c],[
 973 AC_DEFINE(HAVE___D_REHASH, 1,
 974             [__d_rehash is exported by the kernel])
 975 ],[
 976 ])
 977 ])
 978
 979 AC_DEFUN([LC_EXPORT_D_MOVE_LOCKED],
 980 [LB_CHECK_SYMBOL_EXPORT([d_move_locked],
 981 [fs/dcache.c],[
 982 AC_DEFINE(HAVE_D_MOVE_LOCKED, 1,
 983             [d_move_locked is exported by the kernel])
 984 ],[
 985 ])
 986 ])
 987
 988 AC_DEFUN([LC_EXPORT___D_MOVE],
 989 [LB_CHECK_SYMBOL_EXPORT([__d_move],
 990 [fs/dcache.c],[
 991 AC_DEFINE(HAVE___D_MOVE, 1,
 992             [__d_move is exported by the kernel])
 993 ],[
 994 ])
 995 ])
 996
 997 #
 998 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
 999 #
1000 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1001 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1002 #
1003 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1004     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1005          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1006                         [exported invalidate_mapping_pages])],
1007     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1008          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1009                         [exported invalidate_inode_pages])], [
1010        AC_MSG_ERROR([no way to invalidate pages])
1011   ])
1012     ],[])
1013 ])
1014
1015 #
1016 # LC_EXPORT_FILEMAP_FDATASYNC_RANGE
1017 #
1018 # No standard kernels export this
1019 #
1020 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1021 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1022 [mm/filemap.c],[
1023 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1024             [filemap_fdatawrite_range is exported by the kernel])
1025 ],[
1026 ])
1027 ])
1028
1029 # The actual symbol exported varies among architectures, so we need
1030 # to check many symbols (but only in the current architecture.)  No
1031 # matter what symbol is exported, the kernel #defines node_to_cpumask
1032 # to the appropriate function and that's what we use.
1033 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
1034          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
1035                                  [arch/$LINUX_ARCH/mm/numa.c],
1036                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1037                                             [node_to_cpumask is exported by
1038                                              the kernel])]) # x86_64
1039           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
1040                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1041                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1042                                             [node_to_cpumask is exported by
1043                                              the kernel])]) # ia64
1044           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
1045                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1046                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1047                                             [node_to_cpumask is exported by
1048                                              the kernel])]) # i386
1049           ])
1050
1051 # 2.6.22 lost second parameter for invalidate_bdev
1052 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1053 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1054 LB_LINUX_TRY_COMPILE([
1055         #include <linux/buffer_head.h>
1056 ],[
1057         invalidate_bdev(NULL,0);
1058 ],[
1059         AC_MSG_RESULT([yes])
1060         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1061                 [invalidate_bdev has second argument])
1062 ],[
1063         AC_MSG_RESULT([no])
1064 ])
1065 ])
1066
1067 # 2.6.23 have return type 'void' for unregister_blkdev
1068 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1069 [AC_MSG_CHECKING([if unregister_blkdev return int])
1070 LB_LINUX_TRY_COMPILE([
1071         #include <linux/fs.h>
1072 ],[
1073         int i = unregister_blkdev(0,NULL);
1074 ],[
1075         AC_MSG_RESULT([yes])
1076         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1077                 [unregister_blkdev return int])
1078 ],[
1079         AC_MSG_RESULT([no])
1080 ])
1081 ])
1082
1083 # 2.6.23 change .sendfile to .splice_read
1084 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1085 [AC_MSG_CHECKING([if kernel has .splice_read])
1086 LB_LINUX_TRY_COMPILE([
1087         #include <linux/fs.h>
1088 ],[
1089         struct file_operations file;
1090
1091         file.splice_read = NULL;
1092 ], [
1093         AC_MSG_RESULT([yes])
1094         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1095                 [kernel has .slice_read])
1096 ],[
1097         AC_MSG_RESULT([no])
1098 ])
1099 ])
1100
1101 # 2.6.23 extract nfs export related data into exportfs.h
1102 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1103 [
1104 tmpfl="$CFLAGS"
1105 CFLAGS="$CFLAGS -I$LINUX_OBJ/include"
1106 AC_CHECK_HEADERS([linux/exportfs.h])
1107 CFLAGS="$tmpfl"
1108 ])
1109
1110 #
1111 # LC_VFS_INTENT_PATCHES
1112 #
1113 # check if the kernel has the VFS intent patches
1114 AC_DEFUN([LC_VFS_INTENT_PATCHES],
1115 [AC_MSG_CHECKING([if the kernel has the VFS intent patches])
1116 LB_LINUX_TRY_COMPILE([
1117         #include <linux/fs.h>
1118         #include <linux/namei.h>
1119 ],[
1120         struct nameidata nd;
1121         struct lookup_intent *it;
1122
1123         it = &nd.intent;
1124         intent_init(it, IT_OPEN);
1125         it->d.lustre.it_disposition = 0;
1126         it->d.lustre.it_data = NULL;
1127 ],[
1128         AC_MSG_RESULT([yes])
1129         AC_DEFINE(HAVE_VFS_INTENT_PATCHES, 1, [VFS intent patches are applied])
1130 ],[
1131         AC_MSG_RESULT([no])
1132 ])
1133 ])
1134
1135 AC_DEFUN([LC_S_TIME_GRAN],
1136 [AC_MSG_CHECKING([if super block has s_time_gran member])
1137 LB_LINUX_TRY_COMPILE([
1138         #include <linux/fs.h>
1139 ],[
1140         struct super_block sb;
1141
1142         return sb.s_time_gran;
1143 ],[
1144         AC_MSG_RESULT([yes])
1145         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
1146 ],[
1147         AC_MSG_RESULT([no])
1148 ])
1149 ])
1150
1151 AC_DEFUN([LC_SB_TIME_GRAN],
1152 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
1153 LB_LINUX_TRY_COMPILE([
1154         #include <linux/fs.h>
1155 ],[
1156         return get_sb_time_gran(NULL);
1157 ],[
1158         AC_MSG_RESULT([yes])
1159         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
1160 ],[
1161         AC_MSG_RESULT([no])
1162 ])
1163 ])
1164
1165 #
1166 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1167 #
1168 # Check for our patched grab_cache_page_nowait_gfp() function
1169 # after 2.6.29 we can emulate this using add_to_page_cache_lru()
1170 #
1171 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
1172 [LB_CHECK_SYMBOL_EXPORT([grab_cache_page_nowait_gfp],
1173 [mm/filemap.c],[
1174         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
1175                   [kernel exports grab_cache_page_nowait_gfp])
1176         ],
1177         [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1178         [mm/filemap.c],[
1179                 AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1180                         [kernel exports add_to_page_cache_lru])
1181         ],[
1182         ])
1183         ])
1184 ])
1185
1186 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
1187 AC_DEFUN([LC_RW_TREE_LOCK],
1188 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
1189 tmp_flags="$EXTRA_KCFLAGS"
1190 EXTRA_KCFLAGS="-Werror"
1191 LB_LINUX_TRY_COMPILE([
1192         #include <linux/fs.h>
1193 ],[
1194         struct address_space a;
1195
1196         write_lock(&a.tree_lock);
1197 ],[
1198         AC_MSG_RESULT([yes])
1199         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
1200 ],[
1201         AC_MSG_RESULT([no])
1202 ])
1203 EXTRA_KCFLAGS="$tmp_flags"
1204 ])
1205
1206 AC_DEFUN([LC_CONST_ACL_SIZE],
1207 [AC_MSG_CHECKING([calc acl size])
1208 tmp_flags="$CFLAGS"
1209 CFLAGS="$CFLAGS -I$LINUX/include -I$LINUX_OBJ/include -I$LINUX_OBJ/include2 $EXTRA_KCFLAGS"
1210 AC_TRY_RUN([
1211 #define __KERNEL__
1212 #include <linux/autoconf.h>
1213 #include <linux/types.h>
1214 #undef __KERNEL__
1215 // block include
1216 #define __LINUX_POSIX_ACL_H
1217
1218 # ifdef CONFIG_FS_POSIX_ACL
1219 #  ifdef HAVE_XATTR_ACL
1220 #   include <linux/xattr_acl.h>
1221 #  endif
1222 #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
1223 #   include <linux/posix_acl_xattr.h>
1224 #  endif
1225 # endif
1226
1227 #include <lustre_acl.h>
1228
1229 #include <stdio.h>
1230
1231 int main(void)
1232 {
1233     int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
1234     FILE *f = fopen("acl.size","w+");
1235     fprintf(f,"%d", size);
1236     fclose(f);
1237
1238     return 0;
1239 }
1240
1241 ],[
1242         acl_size=`cat acl.size`
1243         AC_MSG_RESULT([ACL size $acl_size])
1244         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
1245 ],[
1246         AC_ERROR([ACL size can't computed])
1247 ])
1248 CFLAGS="$tmp_flags"
1249 ])
1250
1251 #
1252 # check for crypto API
1253 #
1254 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1255 [AC_MSG_CHECKING([if kernel has block cipher support])
1256 LB_LINUX_TRY_COMPILE([
1257         #include <linux/err.h>
1258         #include <linux/crypto.h>
1259 ],[
1260         struct crypto_blkcipher *tfm;
1261         tfm = crypto_alloc_blkcipher("aes", 0, 0 );
1262 ],[
1263         AC_MSG_RESULT([yes])
1264         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1265 ],[
1266         AC_MSG_RESULT([no])
1267 ])
1268 ])
1269
1270 #
1271 # check for struct hash_desc
1272 #
1273 AC_DEFUN([LC_STRUCT_HASH_DESC],
1274 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1275 LB_LINUX_TRY_COMPILE([
1276         #include <linux/err.h>
1277         #include <linux/crypto.h>
1278 ],[
1279         struct hash_desc foo;
1280 ],[
1281         AC_MSG_RESULT([yes])
1282         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1283 ],[
1284         AC_MSG_RESULT([no])
1285 ])
1286 ])
1287
1288 #
1289 # check for struct blkcipher_desc
1290 #
1291 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1292 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1293 LB_LINUX_TRY_COMPILE([
1294         #include <linux/err.h>
1295         #include <linux/crypto.h>
1296 ],[
1297         struct blkcipher_desc foo;
1298 ],[
1299         AC_MSG_RESULT([yes])
1300         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1301 ],[
1302         AC_MSG_RESULT([no])
1303 ])
1304 ])
1305
1306 #
1307 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1308 #
1309 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1310 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1311 LB_LINUX_TRY_COMPILE([
1312         #include <linux/fs.h>
1313 ],[
1314         int v = FS_RENAME_DOES_D_MOVE;
1315 ],[
1316         AC_MSG_RESULT([yes])
1317         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1318 ],[
1319         AC_MSG_RESULT([no])
1320 ])
1321 ])
1322
1323 #
1324 # LC_FUNC_F_OP_FLOCK
1325 #
1326 # rhel4.2 kernel has f_op->flock field
1327 #
1328 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
1329 [AC_MSG_CHECKING([if struct file_operations has flock field])
1330 LB_LINUX_TRY_COMPILE([
1331         #include <linux/fs.h>
1332 ],[
1333         struct file_operations ll_file_operations_flock;
1334         ll_file_operations_flock.flock = NULL;
1335 ],[
1336         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
1337                 [struct file_operations has flock field])
1338         AC_MSG_RESULT([yes])
1339 ],[
1340         AC_MSG_RESULT([no])
1341 ])
1342 ])
1343
1344 # vfs_symlink seems to have started out with 3 args until 2.6.7 where a
1345 # "mode" argument was added, but then again, in some later version it was
1346 # removed
1347 AC_DEFUN([LC_4ARGS_VFS_SYMLINK],
1348 [AC_MSG_CHECKING([if vfs_symlink wants 4 args])
1349 LB_LINUX_TRY_COMPILE([
1350         #include <linux/fs.h>
1351 ],[
1352         struct inode *dir;
1353         struct dentry *dentry;
1354         const char *oldname = NULL;
1355         int mode = 0;
1356
1357         vfs_symlink(dir, dentry, oldname, mode);
1358 ],[
1359         AC_MSG_RESULT(yes)
1360         AC_DEFINE(HAVE_4ARGS_VFS_SYMLINK, 1,
1361                   [vfs_symlink wants 4 args])
1362 ],[
1363         AC_MSG_RESULT(no)
1364 ])
1365 ])
1366
1367 # 2.6.23 has new shrinker API
1368 AC_DEFUN([LC_REGISTER_SHRINKER],
1369 [LB_CHECK_SYMBOL_EXPORT([register_shrinker],
1370 [mm/vmscan.c],[
1371         AC_DEFINE(HAVE_REGISTER_SHRINKER, 1,
1372                   [kernel exports register_shrinker])
1373 ],[
1374 ])
1375 ])
1376
1377 #
1378 # LC_LINUX_FIEMAP_H
1379 #
1380 # If we have fiemap.h
1381 # after 2.6.27 use fiemap.h in include/linux
1382 #
1383 AC_DEFUN([LC_LINUX_FIEMAP_H],
1384 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1385         AC_MSG_CHECKING([if fiemap.h can be compiled])
1386         LB_LINUX_TRY_COMPILE([
1387                 #include <linux/fiemap.h>
1388         ],[],[
1389                 AC_MSG_RESULT([yes])
1390                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1391         ],[
1392                 AC_MSG_RESULT([no])
1393         ])
1394 ],
1395 [])
1396 ])
1397
1398 #
1399 # LC_PROG_LINUX
1400 #
1401 # Lustre linux kernel checks
1402 #
1403 AC_DEFUN([LC_PROG_LINUX],
1404          [LC_LUSTRE_VERSION_H
1405          if test x$enable_server = xyes ; then
1406              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
1407              LC_FUNC_DEV_SET_RDONLY
1408              LC_STACK_SIZE
1409              LC_CONFIG_BACKINGFS
1410          fi
1411          LC_CONFIG_PINGER
1412          LC_CONFIG_CHECKSUM
1413          LC_CONFIG_LIBLUSTRE_RECOVERY
1414          LC_CONFIG_HEALTH_CHECK_WRITE
1415          LC_CONFIG_LRU_RESIZE
1416          LC_QUOTA_MODULE
1417
1418          # RHEL4 patches
1419          LC_EXPORT_TRUNCATE_COMPLETE
1420          LC_EXPORT_TRUNCATE_RANGE
1421          LC_EXPORT_D_REHASH_COND
1422          LC_EXPORT___D_REHASH
1423          LC_EXPORT_D_MOVE_LOCKED
1424          LC_EXPORT___D_MOVE
1425          LC_EXPORT_NODE_TO_CPUMASK
1426
1427          LC_HEADER_LDISKFS_XATTR
1428          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1429          LC_STRUCT_STATFS
1430          LC_FILEMAP_POPULATE
1431          LC_D_ADD_UNIQUE
1432          LC_BIT_SPINLOCK_H
1433
1434          LC_XATTR_ACL
1435          LC_POSIX_ACL_XATTR_H
1436          LC_CONST_ACL_SIZE
1437
1438          LC_STRUCT_INTENT_FILE
1439
1440          LC_CAPA_CRYPTO
1441          LC_CONFIG_RMTCLIENT
1442          LC_CONFIG_GSS
1443          LC_FUNC_MS_FLOCK_LOCK
1444          LC_FUNC_HAVE_CAN_SLEEP_ARG
1445          LC_FUNC_F_OP_FLOCK
1446          LC_QUOTA_READ
1447          LC_COOKIE_FOLLOW_LINK
1448          LC_FUNC_RCU
1449          LC_PERCPU_COUNTER
1450          LC_QUOTA64
1451          LC_4ARGS_VFS_SYMLINK
1452          LC_NETLINK
1453
1454          # does the kernel have VFS intent patches?
1455          LC_VFS_INTENT_PATCHES
1456
1457          # ~2.6.11
1458          LC_S_TIME_GRAN
1459          LC_SB_TIME_GRAN
1460
1461          # 2.6.12
1462          LC_RW_TREE_LOCK
1463          LC_EXPORT_SYNCHRONIZE_RCU
1464
1465          # 2.6.15
1466          LC_INODE_I_MUTEX
1467
1468          # 2.6.16
1469          LC_SECURITY_PLUG  # for SLES10 SP2
1470
1471          # 2.6.17
1472          LC_INODE_IPRIVATE
1473          LC_DQUOTOFF_MUTEX
1474
1475          # 2.6.18
1476          LC_NR_PAGECACHE
1477          LC_STATFS_DENTRY_PARAM
1478          LC_VFS_KERN_MOUNT
1479          LC_INVALIDATEPAGE_RETURN_INT
1480          LC_UMOUNTBEGIN_HAS_VFSMOUNT
1481          LC_SEQ_LOCK
1482          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1483          if test x$enable_server = xyes ; then
1484                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
1485          fi
1486
1487          #2.6.18 + RHEL5 (fc6)
1488          LC_PG_FS_MISC
1489          LC_PAGE_CHECKED
1490
1491          # 2.6.19
1492          LC_INODE_BLKSIZE
1493          LC_VFS_READDIR_U64_INO
1494          LC_FILE_WRITEV
1495          LC_FILE_READV
1496
1497          # 2.6.20
1498          LC_CANCEL_DIRTY_PAGE
1499
1500          # raid5-zerocopy patch
1501          LC_PAGE_CONSTANT
1502
1503          # 2.6.22
1504          LC_INVALIDATE_BDEV_2ARG
1505          LC_ASYNC_BLOCK_CIPHER
1506          LC_STRUCT_HASH_DESC
1507          LC_STRUCT_BLKCIPHER_DESC
1508          LC_FS_RENAME_DOES_D_MOVE
1509          # 2.6.23
1510          LC_UNREGISTER_BLKDEV_RETURN_INT
1511          LC_KERNEL_SPLICE_READ
1512          LC_HAVE_EXPORTFS_H
1513 ])
1514
1515 #
1516 # LC_CONFIG_CLIENT_SERVER
1517 #
1518 # Build client/server sides of Lustre
1519 #
1520 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
1521 [AC_MSG_CHECKING([whether to build Lustre server support])
1522 AC_ARG_ENABLE([server],
1523         AC_HELP_STRING([--disable-server],
1524                         [disable Lustre server support]),
1525         [],[enable_server='yes'])
1526 AC_MSG_RESULT([$enable_server])
1527
1528 AC_MSG_CHECKING([whether to build Lustre client support])
1529 AC_ARG_ENABLE([client],
1530         AC_HELP_STRING([--disable-client],
1531                         [disable Lustre client support]),
1532         [],[enable_client='yes'])
1533 AC_MSG_RESULT([$enable_client])])
1534
1535 #
1536 # LC_CONFIG_LIBLUSTRE
1537 #
1538 # whether to build liblustre
1539 #
1540 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1541 [AC_MSG_CHECKING([whether to build Lustre library])
1542 AC_ARG_ENABLE([liblustre],
1543         AC_HELP_STRING([--disable-liblustre],
1544                         [disable building of Lustre library]),
1545         [],[enable_liblustre=$with_sysio])
1546 AC_MSG_RESULT([$enable_liblustre])
1547 # only build sysio if liblustre is built
1548 with_sysio="$enable_liblustre"
1549
1550 AC_MSG_CHECKING([whether to build liblustre tests])
1551 AC_ARG_ENABLE([liblustre-tests],
1552         AC_HELP_STRING([--enable-liblustre-tests],
1553                         [enable liblustre tests, if --disable-tests is used]),
1554         [],[enable_liblustre_tests=$enable_tests])
1555 if test x$enable_liblustre != xyes ; then
1556    enable_liblustre_tests='no'
1557 fi
1558 AC_MSG_RESULT([$enable_liblustre_tests])
1559
1560 AC_MSG_CHECKING([whether to enable liblustre acl])
1561 AC_ARG_ENABLE([liblustre-acl],
1562         AC_HELP_STRING([--disable-liblustre-acl],
1563                         [disable ACL support for liblustre]),
1564         [],[enable_liblustre_acl=yes])
1565 AC_MSG_RESULT([$enable_liblustre_acl])
1566 if test x$enable_liblustre_acl = xyes ; then
1567   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1568 fi
1569
1570 #
1571 # --enable-mpitest
1572 #
1573 AC_ARG_ENABLE(mpitests,
1574         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
1575                            [include mpi tests]),
1576         [
1577          enable_mpitests=yes
1578          case $enableval in
1579          yes)
1580                 MPICC_WRAPPER=mpicc
1581                 ;;
1582          no)
1583                 enable_mpitests=no
1584                 ;;
1585          *)
1586                 MPICC_WRAPPER=$enableval
1587                  ;;
1588          esac
1589         ],
1590         [
1591         MPICC_WRAPPER=mpicc
1592         enable_mpitests=yes
1593         ]
1594 )
1595
1596 if test x$enable_mpitests != xno; then
1597         AC_MSG_CHECKING([whether mpitests can be built])
1598         oldcc=$CC
1599         CC=$MPICC_WRAPPER
1600         AC_LINK_IFELSE(
1601             [AC_LANG_PROGRAM([[
1602                     #include <mpi.h>
1603                 ]],[[
1604                     int flag;
1605                     MPI_Initialized(&flag);
1606                 ]])],
1607             [
1608                     AC_MSG_RESULT([yes])
1609             ],[
1610                     AC_MSG_RESULT([no])
1611                     enable_mpitests=no
1612         ])
1613         CC=$oldcc
1614 fi
1615 AC_SUBST(MPICC_WRAPPER)
1616
1617 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1618 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1619
1620 LC_CONFIG_PINGER
1621 LC_CONFIG_LIBLUSTRE_RECOVERY
1622 ])
1623
1624 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
1625 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
1626 AC_ARG_ENABLE([lru_resize],
1627         AC_HELP_STRING([--enable-lru-resize],
1628                         [enable lru resize support]),
1629         [],[enable_lru_resize='yes'])
1630 AC_MSG_RESULT([$enable_lru_resize])
1631 if test x$enable_lru_resize != xno; then
1632    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
1633 fi
1634 ])
1635
1636 #
1637 # LC_CONFIG_QUOTA
1638 #
1639 # whether to enable quota support global control
1640 #
1641 AC_DEFUN([LC_CONFIG_QUOTA],
1642 [AC_ARG_ENABLE([quota],
1643         AC_HELP_STRING([--enable-quota],
1644                         [enable quota support]),
1645         [],[enable_quota='yes'])
1646 ])
1647
1648 # whether to enable quota support(kernel modules)
1649 AC_DEFUN([LC_QUOTA_MODULE],
1650 [if test x$enable_quota != xno; then
1651     LB_LINUX_CONFIG([QUOTA],[
1652         enable_quota_module='yes'
1653         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
1654     ],[
1655         enable_quota_module='no'
1656         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
1657     ])
1658 fi
1659 ])
1660
1661 AC_DEFUN([LC_QUOTA],
1662 [#check global
1663 LC_CONFIG_QUOTA
1664 #check for utils
1665 AC_CHECK_HEADER(sys/quota.h,
1666                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
1667                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
1668 ])
1669
1670 AC_DEFUN([LC_QUOTA_READ],
1671 [AC_MSG_CHECKING([if kernel supports quota_read])
1672 LB_LINUX_TRY_COMPILE([
1673         #include <linux/fs.h>
1674 ],[
1675         struct super_operations sp;
1676         void *i = (void *)sp.quota_read;
1677 ],[
1678         AC_MSG_RESULT([yes])
1679         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
1680 ],[
1681         AC_MSG_RESULT([no])
1682 ])
1683 ])
1684
1685 #
1686 # LC_CONFIG_SPLIT
1687 #
1688 # whether to enable split support
1689 #
1690 AC_DEFUN([LC_CONFIG_SPLIT],
1691 [AC_MSG_CHECKING([whether to enable split support])
1692 AC_ARG_ENABLE([split],
1693         AC_HELP_STRING([--enable-split],
1694                         [enable split support]),
1695         [],[enable_split='no'])
1696 AC_MSG_RESULT([$enable_split])
1697 if test x$enable_split != xno; then
1698    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1699 fi
1700 ])
1701
1702 #
1703 # LC_COOKIE_FOLLOW_LINK
1704 #
1705 # kernel 2.6.13+ ->follow_link returns a cookie
1706 #
1707
1708 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
1709 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
1710 LB_LINUX_TRY_COMPILE([
1711         #include <linux/fs.h>
1712         #include <linux/namei.h>
1713 ],[
1714         struct dentry dentry;
1715         struct nameidata nd;
1716
1717         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
1718 ],[
1719         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
1720         AC_MSG_RESULT([yes])
1721 ],[
1722         AC_MSG_RESULT([no])
1723 ])
1724 ])
1725
1726 #
1727 # LC_FUNC_RCU
1728 #
1729 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
1730 # call_rcu takes three parameters.
1731 #
1732 AC_DEFUN([LC_FUNC_RCU],
1733 [AC_MSG_CHECKING([if kernel have RCU supported])
1734 LB_LINUX_TRY_COMPILE([
1735         #include <linux/rcupdate.h>
1736 ],[],[
1737         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
1738         AC_MSG_RESULT([yes])
1739
1740         AC_MSG_CHECKING([if call_rcu takes three parameters])
1741         LB_LINUX_TRY_COMPILE([
1742                 #include <linux/rcupdate.h>
1743         ],[
1744                 struct rcu_head rh;
1745                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
1746         ],[
1747                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
1748                 AC_MSG_RESULT([yes])
1749         ],[
1750                 AC_MSG_RESULT([no])
1751         ])
1752 ],[
1753         AC_MSG_RESULT([no])
1754 ])
1755 ])
1756
1757 #
1758 # LC_QUOTA64
1759 # linux kernel have 64-bit limits support
1760 #
1761 AC_DEFUN([LC_QUOTA64],
1762 [if test x$enable_quota_module = xyes -a x$enable_server = xyes ; then
1763         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
1764         LB_LINUX_TRY_COMPILE([
1765                 #include <linux/kernel.h>
1766                 #include <linux/fs.h>
1767                 #include <linux/quotaio_v2.h>
1768                 int versions[] = V2_INITQVERSIONS_R1;
1769                 struct v2_disk_dqblk_r1 dqblk_r1;
1770         ],[],[
1771                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
1772                 AC_MSG_RESULT([yes])
1773         ],[
1774                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
1775                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
1776                 ],[])
1777                 AC_MSG_RESULT([no])
1778         ])
1779 fi
1780 ])
1781
1782 # LC_SECURITY_PLUG  # for SLES10 SP2
1783 # check security plug in sles10 sp2 kernel
1784 AC_DEFUN([LC_SECURITY_PLUG],
1785 [AC_MSG_CHECKING([If kernel has security plug support])
1786 LB_LINUX_TRY_COMPILE([
1787         #include <linux/fs.h>
1788 ],[
1789         struct dentry   *dentry;
1790         struct vfsmount *mnt;
1791         struct iattr    *iattr;
1792
1793         notify_change(dentry, mnt, iattr);
1794 ],[
1795         AC_MSG_RESULT(yes)
1796         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
1797                 [SLES10 SP2 use extra parameter in vfs])
1798 ],[
1799         AC_MSG_RESULT(no)
1800 ])
1801 ])
1802
1803 AC_DEFUN([LC_PERCPU_COUNTER],
1804 [AC_MSG_CHECKING([if have struct percpu_counter defined])
1805 LB_LINUX_TRY_COMPILE([
1806         #include <linux/percpu_counter.h>
1807 ],[],[
1808         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
1809         AC_MSG_RESULT([yes])
1810
1811         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
1812         LB_LINUX_TRY_COMPILE([
1813                 #include <linux/percpu_counter.h>
1814         ],[
1815                 struct percpu_counter c;
1816                 percpu_counter_init(&c, 0);
1817         ],[
1818                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
1819                                                    arguments])
1820                 AC_MSG_RESULT([yes])
1821         ],[
1822                 AC_MSG_RESULT([no])
1823         ])
1824 ],[
1825         AC_MSG_RESULT([no])
1826 ])
1827 ])
1828
1829 #
1830 # LC_NETLINK
1831 #
1832 # If we have netlink.h, and nlmsg_new takes 2 args
1833 #
1834 AC_DEFUN([LC_NETLINK],
1835 [AC_MSG_CHECKING([if netlink.h can be compiled])
1836 LB_LINUX_TRY_COMPILE([
1837         #include <net/netlink.h>
1838 ],[],[
1839         AC_MSG_RESULT([yes])
1840         AC_DEFINE(HAVE_NETLINK, 1, [net/netlink.h found])
1841
1842         AC_MSG_CHECKING([if nlmsg_new takes a 2nd argument])
1843         LB_LINUX_TRY_COMPILE([
1844                 #include <net/netlink.h>
1845         ],[
1846                 nlmsg_new(100, GFP_KERNEL);
1847         ],[
1848                 AC_MSG_RESULT([yes])
1849                 AC_DEFINE(HAVE_NETLINK_NL2, 1, [nlmsg_new takes 2 args])
1850         ],[
1851                 AC_MSG_RESULT([no])
1852         ])
1853 ],[
1854         AC_MSG_RESULT([no])
1855 ])
1856 ])
1857
1858 #
1859 # LC_CONFIGURE
1860 #
1861 # other configure checks
1862 #
1863 AC_DEFUN([LC_CONFIGURE],
1864 [LC_CONFIG_OBD_BUFFER_SIZE
1865
1866 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
1867         CFLAGS="$CFLAGS -Werror"
1868 fi
1869
1870 # include/liblustre.h
1871 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1872
1873 # liblustre/llite_lib.h
1874 AC_CHECK_HEADERS([xtio.h file.h])
1875
1876 # liblustre/dir.c
1877 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1878
1879 # liblustre/lutil.c
1880 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1881 AC_CHECK_FUNCS([inet_ntoa])
1882
1883 # libsysio/src/readlink.c
1884 LC_READLINK_SSIZE_T
1885
1886 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
1887 AC_CHECK_HEADERS([linux/random.h], [], [],
1888                  [#ifdef HAVE_LINUX_TYPES_H
1889                   # include <linux/types.h>
1890                   #endif
1891                  ])
1892
1893 # utils/llverfs.c
1894 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1895
1896 # check for -lz support
1897 ZLIB=""
1898 AC_CHECK_LIB([z],
1899              [adler32],
1900              [AC_CHECK_HEADERS([zlib.h],
1901                                [ZLIB="-lz"
1902                                 AC_DEFINE([HAVE_ADLER], 1,
1903                                           [support alder32 checksum type])],
1904                                [AC_MSG_WARN([No zlib-devel package found,
1905                                              unable to use adler32 checksum])])],
1906              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
1907 )
1908 AC_SUBST(ZLIB)
1909
1910 # Super safe df
1911 AC_ARG_ENABLE([mindf],
1912       AC_HELP_STRING([--enable-mindf],
1913                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1914       [],[])
1915 if test "$enable_mindf" = "yes" ;  then
1916       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1917 fi
1918
1919 AC_ARG_ENABLE([fail_alloc],
1920         AC_HELP_STRING([--disable-fail-alloc],
1921                 [disable randomly alloc failure]),
1922         [],[enable_fail_alloc=yes])
1923 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1924 AC_MSG_RESULT([$enable_fail_alloc])
1925 if test x$enable_fail_alloc != xno ; then
1926         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1927 fi
1928
1929 AC_ARG_ENABLE([invariants],
1930         AC_HELP_STRING([--enable-invariants],
1931                 [enable invariant checking (cpu intensive)]),
1932         [],[])
1933 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
1934 AC_MSG_RESULT([$enable_invariants])
1935 if test x$enable_invariants = xyes ; then
1936         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
1937 fi
1938
1939 AC_ARG_ENABLE([lu_ref],
1940         AC_HELP_STRING([--enable-lu_ref],
1941                 [enable lu_ref reference tracking code]),
1942         [],[])
1943 AC_MSG_CHECKING([whether to track references with lu_ref])
1944 AC_MSG_RESULT([$enable_lu_ref])
1945 if test x$enable_lu_ref = xyes ; then
1946         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
1947 fi
1948
1949 ])
1950
1951 #
1952 # LC_CONDITIONALS
1953 #
1954 # AM_CONDITIONALS for lustre
1955 #
1956 AC_DEFUN([LC_CONDITIONALS],
1957 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1958 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
1959 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1960 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1961 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1962 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1963 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
1964 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1965 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1966 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1967 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1968 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1969 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1970 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1971 ])
1972
1973 #
1974 # LC_CONFIG_FILES
1975 #
1976 # files that should be generated with AC_OUTPUT
1977 #
1978 AC_DEFUN([LC_CONFIG_FILES],
1979 [AC_CONFIG_FILES([
1980 lustre/Makefile
1981 lustre/autoMakefile
1982 lustre/autoconf/Makefile
1983 lustre/contrib/Makefile
1984 lustre/doc/Makefile
1985 lustre/include/Makefile
1986 lustre/include/lustre_ver.h
1987 lustre/include/linux/Makefile
1988 lustre/include/lustre/Makefile
1989 lustre/kernel_patches/targets/2.6-vanilla.target
1990 lustre/kernel_patches/targets/2.6-rhel4.target
1991 lustre/kernel_patches/targets/2.6-rhel5.target
1992 lustre/kernel_patches/targets/2.6-fc5.target
1993 lustre/kernel_patches/targets/2.6-patchless.target
1994 lustre/kernel_patches/targets/2.6-sles10.target
1995 lustre/ldlm/Makefile
1996 lustre/fid/Makefile
1997 lustre/fid/autoMakefile
1998 lustre/liblustre/Makefile
1999 lustre/liblustre/tests/Makefile
2000 lustre/liblustre/tests/mpi/Makefile
2001 lustre/llite/Makefile
2002 lustre/llite/autoMakefile
2003 lustre/lclient/Makefile
2004 lustre/lov/Makefile
2005 lustre/lov/autoMakefile
2006 lustre/lvfs/Makefile
2007 lustre/lvfs/autoMakefile
2008 lustre/mdc/Makefile
2009 lustre/mdc/autoMakefile
2010 lustre/lmv/Makefile
2011 lustre/lmv/autoMakefile
2012 lustre/mds/Makefile
2013 lustre/mds/autoMakefile
2014 lustre/mdt/Makefile
2015 lustre/mdt/autoMakefile
2016 lustre/cmm/Makefile
2017 lustre/cmm/autoMakefile
2018 lustre/mdd/Makefile
2019 lustre/mdd/autoMakefile
2020 lustre/fld/Makefile
2021 lustre/fld/autoMakefile
2022 lustre/obdclass/Makefile
2023 lustre/obdclass/autoMakefile
2024 lustre/obdclass/linux/Makefile
2025 lustre/obdecho/Makefile
2026 lustre/obdecho/autoMakefile
2027 lustre/obdfilter/Makefile
2028 lustre/obdfilter/autoMakefile
2029 lustre/osc/Makefile
2030 lustre/osc/autoMakefile
2031 lustre/ost/Makefile
2032 lustre/ost/autoMakefile
2033 lustre/osd/Makefile
2034 lustre/osd/autoMakefile
2035 lustre/mgc/Makefile
2036 lustre/mgc/autoMakefile
2037 lustre/mgs/Makefile
2038 lustre/mgs/autoMakefile
2039 lustre/ptlrpc/Makefile
2040 lustre/ptlrpc/autoMakefile
2041 lustre/ptlrpc/gss/Makefile
2042 lustre/ptlrpc/gss/autoMakefile
2043 lustre/quota/Makefile
2044 lustre/quota/autoMakefile
2045 lustre/scripts/Makefile
2046 lustre/tests/Makefile
2047 lustre/tests/mpi/Makefile
2048 lustre/utils/Makefile
2049 lustre/utils/gss/Makefile
2050 ])
2051 case $lb_target_os in
2052         darwin)
2053                 AC_CONFIG_FILES([ lustre/obdclass/darwin/Makefile ])
2054                 ;;
2055 esac
2056
2057 ])