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 ldiskfs_is_ext4=no
  12 ])
  13
  14 #
  15 # LC_PATH_DEFAULTS
  16 #
  17 # lustre specific paths
  18 #
  19 AC_DEFUN([LC_PATH_DEFAULTS],
  20 [# ptlrpc kernel build requires this
  21 LUSTRE="$PWD/lustre"
  22 AC_SUBST(LUSTRE)
  23
  24 # mount.lustre
  25 rootsbindir='/sbin'
  26 AC_SUBST(rootsbindir)
  27
  28 demodir='$(docdir)/demo'
  29 AC_SUBST(demodir)
  30
  31 pkgexampledir='${pkgdatadir}/examples'
  32 AC_SUBST(pkgexampledir)
  33 ])
  34
  35 #
  36 # LC_TARGET_SUPPORTED
  37 #
  38 # is the target os supported?
  39 #
  40 AC_DEFUN([LC_TARGET_SUPPORTED],
  41 [case $target_os in
  42         linux* | darwin*)
  43 $1
  44                 ;;
  45         *)
  46 $2
  47                 ;;
  48 esac
  49 ])
  50
  51 #
  52 # Ensure stack size big than 8k in Lustre server (all kernels)
  53 #
  54 AC_DEFUN([LC_STACK_SIZE],
  55 [AC_MSG_CHECKING([stack size big than 8k])
  56 LB_LINUX_TRY_COMPILE([
  57         #include <linux/thread_info.h>
  58 ],[
  59         #if THREAD_SIZE < 8192
  60         #error "stack size < 8192"
  61         #endif
  62 ],[
  63         AC_MSG_RESULT(yes)
  64 ],[
  65         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
  66 ])
  67 ])
  68
  69 #
  70 # LC_FUNC_DEV_SET_RDONLY
  71 #
  72 # check for the old-style dev_set_rdonly which took an extra "devno" param
  73 # and can only set a single device to discard writes at one time
  74 #
  75 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
  76 [AC_MSG_CHECKING([if kernel has new dev_set_rdonly])
  77 LB_LINUX_TRY_COMPILE([
  78         #include <linux/fs.h>
  79         #include <linux/blkdev.h>
  80 ],[
  81         #ifndef HAVE_CLEAR_RDONLY_ON_PUT
  82         #error needs to be patched by lustre kernel patches from Lustre version 1.4.3 or above.
  83         #endif
  84 ],[
  85         AC_MSG_RESULT([yes])
  86         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel has new dev_set_rdonly])
  87 ],[
  88         AC_MSG_ERROR([no, Linux kernel source needs to be patches by lustre
  89 kernel patches from Lustre version 1.4.3 or above.])
  90 ])
  91 ])
  92
  93 #
  94 # LC_CONFIG_BACKINGFS
  95 #
  96 # setup, check the backing filesystem
  97 #
  98 AC_DEFUN([LC_CONFIG_BACKINGFS],
  99 [
 100 BACKINGFS="ldiskfs"
 101
 102 if test x$with_ldiskfs = xno ; then
 103         if test x$linux25$enable_server = xyesyes ; then
 104                 AC_MSG_ERROR([ldiskfs is required for 2.6-based servers.])
 105         fi
 106 else
 107         # ldiskfs is enabled
 108         LB_DEFINE_LDISKFS_OPTIONS
 109 fi #ldiskfs
 110
 111 AC_MSG_CHECKING([which backing filesystem to use])
 112 AC_MSG_RESULT([$BACKINGFS])
 113 AC_SUBST(BACKINGFS)
 114 ])
 115
 116 #
 117 # LC_CONFIG_PINGER
 118 #
 119 # the pinger is temporary, until we have the recovery node in place
 120 #
 121 AC_DEFUN([LC_CONFIG_PINGER],
 122 [AC_MSG_CHECKING([whether to enable pinger support])
 123 AC_ARG_ENABLE([pinger],
 124         AC_HELP_STRING([--disable-pinger],
 125                         [disable recovery pinger support]),
 126         [],[enable_pinger='yes'])
 127 AC_MSG_RESULT([$enable_pinger])
 128 if test x$enable_pinger != xno ; then
 129   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 130 fi
 131 ])
 132
 133 #
 134 # LC_CONFIG_CHECKSUM
 135 #
 136 # do checksum of bulk data between client and OST
 137 #
 138 AC_DEFUN([LC_CONFIG_CHECKSUM],
 139 [AC_MSG_CHECKING([whether to enable data checksum support])
 140 AC_ARG_ENABLE([checksum],
 141        AC_HELP_STRING([--disable-checksum],
 142                        [disable data checksum support]),
 143        [],[enable_checksum='yes'])
 144 AC_MSG_RESULT([$enable_checksum])
 145 if test x$enable_checksum != xno ; then
 146   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 147 fi
 148 ])
 149
 150 #
 151 # LC_HEADER_LDISKFS_XATTR
 152 #
 153 # CHAOS kernel-devel package will not include fs/ldiskfs/xattr.h
 154 #
 155 AC_DEFUN([LC_HEADER_LDISKFS_XATTR],
 156 [AC_MSG_CHECKING([if ldiskfs has xattr.h header])
 157 tmp_flags="$EXTRA_KCFLAGS"
 158 EXTRA_KCFLAGS="-I$LINUX/fs -I$LDISKFS_DIR -I$LDISKFS_DIR/ldiskfs"
 159 LB_LINUX_TRY_COMPILE([
 160         #include <ldiskfs/xattr.h>
 161 ],[
 162         ldiskfs_xattr_get(NULL, 0, "", NULL, 0);
 163         ldiskfs_xattr_set_handle(NULL, NULL, 0, "", NULL, 0, 0);
 164
 165 ],[
 166         AC_MSG_RESULT([yes])
 167         AC_DEFINE(HAVE_LDISKFS_XATTR_H, 1, [ldiskfs/xattr.h found])
 168 ],[
 169         AC_MSG_RESULT([no])
 170 ])
 171 EXTRA_KCFLAGS="$tmp_flags"
 172 ])
 173
 174 #
 175 # LC_CONFIG_HEALTH_CHECK_WRITE
 176 #
 177 # Turn off the actual write to the disk
 178 #
 179 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 180 [AC_MSG_CHECKING([whether to enable a write with the health check])
 181 AC_ARG_ENABLE([health_write],
 182         AC_HELP_STRING([--enable-health_write],
 183                         [enable disk writes when doing health check]),
 184         [],[enable_health_write='no'])
 185 AC_MSG_RESULT([$enable_health_write])
 186 if test x$enable_health_write != xno ; then
 187   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 188 fi
 189 ])
 190
 191 #
 192 # LC_CONFIG_LIBLUSTRE_RECOVERY
 193 #
 194 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 195 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 196 AC_ARG_ENABLE([liblustre-recovery],
 197         AC_HELP_STRING([--disable-liblustre-recovery],
 198                         [disable liblustre recovery support]),
 199         [],[enable_liblustre_recovery='yes'])
 200 AC_MSG_RESULT([$enable_liblustre_recovery])
 201 if test x$enable_liblustre_recovery != xno ; then
 202   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 203 fi
 204 ])
 205
 206 #
 207 # LC_CONFIG_OBD_BUFFER_SIZE
 208 #
 209 # the maximum buffer size of lctl ioctls
 210 #
 211 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
 212 [AC_MSG_CHECKING([maximum OBD ioctl size])
 213 AC_ARG_WITH([obd-buffer-size],
 214         AC_HELP_STRING([--with-obd-buffer-size=[size]],
 215                         [set lctl ioctl maximum bytes (default=8192)]),
 216         [
 217                 OBD_BUFFER_SIZE=$with_obd_buffer_size
 218         ],[
 219                 OBD_BUFFER_SIZE=8192
 220         ])
 221 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
 222 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
 223 ])
 224
 225 #
 226 # LC_STRUCT_STATFS
 227 #
 228 # AIX does not have statfs.f_namelen
 229 #
 230 AC_DEFUN([LC_STRUCT_STATFS],
 231 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
 232 LB_LINUX_TRY_COMPILE([
 233         #include <linux/vfs.h>
 234 ],[
 235         struct statfs sfs;
 236         sfs.f_namelen = 1;
 237 ],[
 238         AC_MSG_RESULT([yes])
 239         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
 240 ],[
 241         AC_MSG_RESULT([no])
 242 ])
 243 ])
 244
 245 #
 246 # LC_READLINK_SSIZE_T
 247 #
 248 AC_DEFUN([LC_READLINK_SSIZE_T],
 249 [AC_MSG_CHECKING([if readlink returns ssize_t])
 250 AC_TRY_COMPILE([
 251         #include <unistd.h>
 252 ],[
 253         ssize_t readlink(const char *, char *, size_t);
 254 ],[
 255         AC_MSG_RESULT([yes])
 256         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
 257 ],[
 258         AC_MSG_RESULT([no])
 259 ])
 260 ])
 261
 262 #
 263 # LC_FUNC_MS_FLOCK_LOCK
 264 #
 265 # 2.6.5 kernel has MS_FLOCK_LOCK sb flag
 266 #
 267 AC_DEFUN([LC_FUNC_MS_FLOCK_LOCK],
 268 [AC_MSG_CHECKING([if kernel has MS_FLOCK_LOCK sb flag])
 269 LB_LINUX_TRY_COMPILE([
 270         #include <linux/fs.h>
 271 ],[
 272         int flags = MS_FLOCK_LOCK;
 273 ],[
 274         AC_DEFINE(HAVE_MS_FLOCK_LOCK, 1,
 275                 [kernel has MS_FLOCK_LOCK flag])
 276         AC_MSG_RESULT([yes])
 277 ],[
 278         AC_MSG_RESULT([no])
 279 ])
 280 ])
 281
 282 #
 283 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 284 #
 285 # 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
 286 #
 287 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 288 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 289 LB_LINUX_TRY_COMPILE([
 290         #include <linux/fs.h>
 291 ],[
 292         int cansleep;
 293         struct file *file;
 294         struct file_lock *file_lock;
 295         flock_lock_file_wait(file, file_lock, cansleep);
 296 ],[
 297         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 298                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 299         AC_MSG_RESULT([yes])
 300 ],[
 301         AC_MSG_RESULT([no])
 302 ])
 303 ])
 304
 305 #
 306 # LC_FUNC_RELEASEPAGE_WITH_GFP
 307 #
 308 # 2.6.9 ->releasepage() takes a gfp_t arg
 309 # This kernel defines gfp_t (HAS_GFP_T) but doesn't use it for this function,
 310 # while others either don't have gfp_t or pass gfp_t as the parameter.
 311 #
 312 AC_DEFUN([LC_FUNC_RELEASEPAGE_WITH_GFP],
 313 [AC_MSG_CHECKING([if releasepage has a gfp_t parameter])
 314 RELEASEPAGE_WITH_GFP="$(grep -c 'releasepage.*gfp_t' $LINUX/include/linux/fs.h)"
 315 if test "$RELEASEPAGE_WITH_GFP" != 0 ; then
 316         AC_DEFINE(HAVE_RELEASEPAGE_WITH_GFP, 1,
 317                   [releasepage with gfp_t parameter])
 318         AC_MSG_RESULT([yes])
 319 else
 320         AC_MSG_RESULT([no])
 321 fi
 322 ])
 323
 324 #
 325 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
 326 #
 327 AC_DEFUN([LC_FILEMAP_POPULATE],
 328 [AC_MSG_CHECKING([for exported filemap_populate])
 329 LB_LINUX_TRY_COMPILE([
 330         #include <asm/page.h>
 331         #include <linux/mm.h>
 332 ],[
 333        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 334 ],[
 335         AC_MSG_RESULT([yes])
 336         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 337 ],[
 338         AC_MSG_RESULT([no])
 339 ])
 340 ])
 341
 342 #
 343 # added in 2.6.15
 344 #
 345 AC_DEFUN([LC_D_ADD_UNIQUE],
 346 [AC_MSG_CHECKING([for d_add_unique])
 347 LB_LINUX_TRY_COMPILE([
 348         #include <linux/dcache.h>
 349 ],[
 350        d_add_unique(NULL, NULL);
 351 ],[
 352         AC_MSG_RESULT([yes])
 353         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
 354 ],[
 355         AC_MSG_RESULT([no])
 356 ])
 357 ])
 358
 359 #
 360 # added in 2.6.17
 361 #
 362 AC_DEFUN([LC_BIT_SPINLOCK_H],
 363 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 364         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 365         LB_LINUX_TRY_COMPILE([
 366                 #include <asm/processor.h>
 367                 #include <linux/spinlock.h>
 368                 #include <linux/bit_spinlock.h>
 369         ],[],[
 370                 AC_MSG_RESULT([yes])
 371                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 372         ],[
 373                 AC_MSG_RESULT([no])
 374         ])
 375 ],
 376 [])
 377 ])
 378
 379 #
 380 # After 2.6.26 we no longer have xattr_acl.h
 381 #
 382 AC_DEFUN([LC_XATTR_ACL],
 383 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
 384         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 385         LB_LINUX_TRY_COMPILE([
 386                 #include <linux/xattr_acl.h>
 387         ],[],[
 388                 AC_MSG_RESULT([yes])
 389                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 390         ],[
 391                 AC_MSG_RESULT([no])
 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/fs.h>
 425                 #include <linux/posix_acl_xattr.h>
 426         ],[],[
 427                 AC_MSG_RESULT([yes])
 428                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 429
 430         ],[
 431                 AC_MSG_RESULT([no])
 432         ])
 433 $1
 434 ],[
 435         AC_MSG_RESULT([no])
 436 ])
 437 ])
 438
 439 #
 440 # only for Lustre-patched kernels
 441 #
 442 AC_DEFUN([LC_LUSTRE_VERSION_H],
 443 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 444         rm -f "$LUSTRE/include/linux/lustre_version.h"
 445 ],[
 446         touch "$LUSTRE/include/linux/lustre_version.h"
 447         if test x$enable_server = xyes ; then
 448                 AC_MSG_WARN([Unpatched kernel detected.])
 449                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
 450                 AC_MSG_WARN([disabling server build])
 451                 enable_server='no'
 452         fi
 453 ])
 454 ])
 455
 456 #
 457 # LC_CAPA_CRYPTO
 458 #
 459 AC_DEFUN([LC_CAPA_CRYPTO],
 460 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 461         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 462 ])
 463 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 464         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 465 ])
 466 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 467         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 468 ])
 469 ])
 470
 471 #
 472 # LC_CONFIG_RMTCLIENT
 473 #
 474 dnl FIXME
 475 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 476 dnl FIXME
 477 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 478 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 479         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 480 ])
 481 ])
 482
 483 AC_DEFUN([LC_SUNRPC_CACHE],
 484 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 485 LB_LINUX_TRY_COMPILE([
 486         #include <linux/sunrpc/cache.h>
 487 ],[
 488         struct cache_head ch;
 489         &ch.ref.refcount;
 490 ],[
 491         AC_MSG_RESULT([yes])
 492         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 493 ],[
 494         AC_MSG_RESULT([no])
 495 ])
 496 ])
 497
 498 AC_DEFUN([LC_CONFIG_SUNRPC],
 499 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 500                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 501  LC_SUNRPC_CACHE
 502 ])
 503
 504 #
 505 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 506 #
 507 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 508 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 509  AC_ARG_ENABLE([gss_keyring],
 510                [AC_HELP_STRING([--disable-gss-keyring],
 511                                [disable gss keyring backend])],
 512                [],[enable_gss_keyring='yes'])
 513  AC_MSG_RESULT([$enable_gss_keyring])
 514
 515  if test x$enable_gss_keyring != xno; then
 516         LB_LINUX_CONFIG_IM([KEYS],[],
 517                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 518
 519         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 520                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 521
 522         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 523                   [Define this if you enable gss keyring backend])
 524  fi
 525 ])
 526
 527 #
 528 # LC_CONFIG_GSS (default disabled)
 529 #
 530 # Build gss and related tools of Lustre. Currently both kernel and user space
 531 # parts are depend on linux platform.
 532 #
 533 AC_DEFUN([LC_CONFIG_GSS],
 534 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 535  AC_ARG_ENABLE([gss],
 536                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 537                [],[enable_gss='no'])
 538  AC_MSG_RESULT([$enable_gss])
 539
 540  if test x$enable_gss == xyes; then
 541         LC_CONFIG_GSS_KEYRING
 542         LC_CONFIG_SUNRPC
 543
 544         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 545
 546         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 547                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 548         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 549                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 550         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 551                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 552         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 553                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 554
 555         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 556                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 557                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 558                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 559                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 560
 561         AC_SUBST(GSSAPI_LIBS)
 562
 563         AC_KERBEROS_V5
 564  fi
 565 ])
 566
 567 # LC_EXPORT_SYNCHRONIZE_RCU
 568 # after 2.6.12 synchronize_rcu is preferred over synchronize_kernel
 569 AC_DEFUN([LC_EXPORT_SYNCHRONIZE_RCU],
 570 [LB_CHECK_SYMBOL_EXPORT([synchronize_rcu],
 571 [kernel/rcupdate.c],[
 572         AC_DEFINE(HAVE_SYNCHRONIZE_RCU, 1,
 573                 [in 2.6.12 synchronize_rcu preferred over synchronize_kernel])
 574 ],[
 575 ])
 576 ])
 577
 578 # LC_INODE_I_MUTEX
 579 # after 2.6.15 inode have i_mutex intead of i_sem
 580 AC_DEFUN([LC_INODE_I_MUTEX],
 581 [AC_MSG_CHECKING([if inode has i_mutex ])
 582 LB_LINUX_TRY_COMPILE([
 583         #include <linux/mutex.h>
 584         #include <linux/fs.h>
 585         #undef i_mutex
 586 ],[
 587         struct inode i;
 588
 589         mutex_unlock(&i.i_mutex);
 590 ],[
 591         AC_MSG_RESULT(yes)
 592         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 593                 [after 2.6.15 inode have i_mutex intead of i_sem])
 594 ],[
 595         AC_MSG_RESULT(no)
 596 ])
 597 ])
 598
 599 # LC_SEQ_LOCK
 600 # after 2.6.18 seq_file has lock intead of sem
 601 AC_DEFUN([LC_SEQ_LOCK],
 602 [AC_MSG_CHECKING([if struct seq_file has lock field])
 603 LB_LINUX_TRY_COMPILE([
 604         #include <linux/seq_file.h>
 605 ],[
 606         struct seq_file seq;
 607
 608         mutex_unlock(&seq.lock);
 609 ],[
 610         AC_MSG_RESULT(yes)
 611         AC_DEFINE(HAVE_SEQ_LOCK, 1,
 612                 [after 2.6.18 seq_file has lock intead of sem])
 613 ],[
 614         AC_MSG_RESULT(NO)
 615 ])
 616 ])
 617
 618 # LC_DQUOTOFF_MUTEX
 619 # after 2.6.17 dquote use mutex instead if semaphore
 620 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 621 [AC_MSG_CHECKING([use dqonoff_mutex])
 622 LB_LINUX_TRY_COMPILE([
 623         #include <linux/mutex.h>
 624         #include <linux/fs.h>
 625         #include <linux/quota.h>
 626 ],[
 627         struct quota_info dq;
 628
 629         mutex_unlock(&dq.dqonoff_mutex);
 630 ],[
 631         AC_MSG_RESULT(yes)
 632         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 633                 [after 2.6.17 dquote use mutex instead if semaphore])
 634 ],[
 635         AC_MSG_RESULT(no)
 636 ])
 637 ])
 638
 639 #
 640 # LC_STATFS_DENTRY_PARAM
 641 # starting from 2.6.18 linux kernel uses dentry instead of
 642 # super_block for first vfs_statfs argument
 643 #
 644 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 645 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
 646 LB_LINUX_TRY_COMPILE([
 647         #include <linux/fs.h>
 648 ],[
 649         int vfs_statfs(struct dentry *, struct kstatfs *);
 650 ],[
 651         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 652                 [first parameter of vfs_statfs is dentry])
 653         AC_MSG_RESULT([yes])
 654 ],[
 655         AC_MSG_RESULT([no])
 656 ])
 657 ])
 658
 659 #
 660 # LC_VFS_KERN_MOUNT
 661 # starting from 2.6.18 kernel don't export do_kern_mount
 662 # and want to use vfs_kern_mount instead.
 663 #
 664 AC_DEFUN([LC_VFS_KERN_MOUNT],
 665 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
 666 LB_LINUX_TRY_COMPILE([
 667         #include <linux/mount.h>
 668 ],[
 669         vfs_kern_mount(NULL, 0, NULL, NULL);
 670 ],[
 671         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
 672                 [vfs_kern_mount exist in kernel])
 673         AC_MSG_RESULT([yes])
 674 ],[
 675         AC_MSG_RESULT([no])
 676 ])
 677 ])
 678
 679 #
 680 # LC_D_OBTAIN_ALIAS
 681 # starting from 2.6.18 kernel don't export do_kern_mount
 682 # and want to use vfs_kern_mount instead.
 683 #
 684 AC_DEFUN([LC_D_OBTAIN_ALIAS],
 685 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
 686 LB_LINUX_TRY_COMPILE([
 687         #include <linux/dcache.h>
 688 ],[
 689         d_obtain_alias(NULL);
 690 ],[
 691         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
 692                 [d_obtain_alias exist in kernel])
 693         AC_MSG_RESULT([yes])
 694 ],[
 695         AC_MSG_RESULT([no])
 696 ])
 697 ])
 698
 699 #
 700 # LC_INVALIDATEPAGE_RETURN_INT
 701 # 2.6.17 changes return type for invalidatepage to 'void' from 'int'
 702 #
 703 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
 704 [AC_MSG_CHECKING([invalidatepage has return int])
 705 LB_LINUX_TRY_COMPILE([
 706         #include <linux/buffer_head.h>
 707 ],[
 708         int rc = block_invalidatepage(NULL, 0);
 709 ],[
 710         AC_MSG_RESULT(yes)
 711         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
 712                 [Define if return type of invalidatepage should be int])
 713 ],[
 714         AC_MSG_RESULT(no)
 715 ])
 716 ])
 717
 718 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 719 # after 2.6.18 umount_begin has different parameters
 720 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 721 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 722 tmp_flags="$EXTRA_KCFLAGS"
 723 EXTRA_KCFLAGS="-Werror"
 724 LB_LINUX_TRY_COMPILE([
 725         #include <linux/fs.h>
 726
 727         struct vfsmount;
 728         static void cfg_umount_begin (struct vfsmount *v, int flags)
 729         {
 730                 ;
 731         }
 732
 733         static struct super_operations cfg_super_operations = {
 734                 .umount_begin   = cfg_umount_begin,
 735         };
 736 ],[
 737         cfg_super_operations.umount_begin(NULL,0);
 738 ],[
 739         AC_MSG_RESULT(yes)
 740         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
 741                 [Define umount_begin need second argument])
 742 ],[
 743         AC_MSG_RESULT(no)
 744 ])
 745 EXTRA_KCFLAGS="$tmp_flags"
 746 ])
 747
 748 # inode have i_private field since 2.6.17
 749 AC_DEFUN([LC_INODE_IPRIVATE],
 750 [AC_MSG_CHECKING([if inode has a i_private field])
 751 LB_LINUX_TRY_COMPILE([
 752 #include <linux/fs.h>
 753 ],[
 754         struct inode i;
 755         i.i_private = NULL;
 756 ],[
 757         AC_MSG_RESULT(yes)
 758         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
 759                 [struct inode has i_private field])
 760 ],[
 761         AC_MSG_RESULT(no)
 762 ])
 763 ])
 764
 765 # 2.6.19 API changes
 766 # inode don't have i_blksize field
 767 AC_DEFUN([LC_INODE_BLKSIZE],
 768 [AC_MSG_CHECKING([inode has i_blksize field])
 769 LB_LINUX_TRY_COMPILE([
 770 #include <linux/fs.h>
 771 ],[
 772         struct inode i;
 773         i.i_blksize = 0;
 774 ],[
 775         AC_MSG_RESULT(yes)
 776         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
 777                 [struct inode has i_blksize field])
 778 ],[
 779         AC_MSG_RESULT(no)
 780 ])
 781 ])
 782
 783 # LC_VFS_READDIR_U64_INO
 784 # 2.6.19 use u64 for inode number instead of inode_t
 785 AC_DEFUN([LC_VFS_READDIR_U64_INO],
 786 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
 787 tmp_flags="$EXTRA_KCFLAGS"
 788 EXTRA_KCFLAGS="-Werror"
 789 LB_LINUX_TRY_COMPILE([
 790 #include <linux/fs.h>
 791         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
 792                       u64 ino, unsigned int d_type)
 793         {
 794                 return 0;
 795         }
 796 ],[
 797         filldir_t filter;
 798
 799         filter = fillonedir;
 800         return 1;
 801 ],[
 802         AC_MSG_RESULT(yes)
 803         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
 804                 [if vfs_readdir need 64bit inode number])
 805 ],[
 806         AC_MSG_RESULT(no)
 807 ])
 808 EXTRA_KCFLAGS="$tmp_flags"
 809 ])
 810
 811 # LC_FILE_WRITEV
 812 # 2.6.19 replaced writev with aio_write
 813 AC_DEFUN([LC_FILE_WRITEV],
 814 [AC_MSG_CHECKING([writev in fops])
 815 LB_LINUX_TRY_COMPILE([
 816         #include <linux/fs.h>
 817 ],[
 818         struct file_operations *fops = NULL;
 819         fops->writev = NULL;
 820 ],[
 821         AC_MSG_RESULT(yes)
 822         AC_DEFINE(HAVE_FILE_WRITEV, 1,
 823                 [use fops->writev])
 824 ],[
 825         AC_MSG_RESULT(no)
 826 ])
 827 ])
 828
 829 # LC_GENERIC_FILE_READ
 830 # 2.6.19 replaced readv with aio_read
 831 AC_DEFUN([LC_FILE_READV],
 832 [AC_MSG_CHECKING([readv in fops])
 833 LB_LINUX_TRY_COMPILE([
 834         #include <linux/fs.h>
 835 ],[
 836         struct file_operations *fops = NULL;
 837         fops->readv = NULL;
 838 ],[
 839         AC_MSG_RESULT(yes)
 840         AC_DEFINE(HAVE_FILE_READV, 1,
 841                 [use fops->readv])
 842 ],[
 843         AC_MSG_RESULT(no)
 844 ])
 845 ])
 846
 847 # LC_NR_PAGECACHE
 848 # 2.6.18 don't export nr_pagecahe
 849 AC_DEFUN([LC_NR_PAGECACHE],
 850 [AC_MSG_CHECKING([kernel export nr_pagecache])
 851 LB_LINUX_TRY_COMPILE([
 852         #include <linux/pagemap.h>
 853 ],[
 854         return atomic_read(&nr_pagecache);
 855 ],[
 856         AC_MSG_RESULT(yes)
 857         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 858                 [is kernel export nr_pagecache])
 859 ],[
 860         AC_MSG_RESULT(no)
 861 ])
 862 ])
 863
 864 # LC_CANCEL_DIRTY_PAGE
 865 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
 866 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
 867         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
 868         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
 869         # backport is broken, so ignore it
 870         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
 871            test "$(sed -ne '/^static inline void cancel_dirty_page(struct page \*page, unsigned int account_size)$/,/^}$/p' $OFED_BACKPORT_PATH/linux/mm.h | md5sum)" = "c518cb32d6394760c5bca14cb7538d3e  -"; then
 872                 AC_MSG_RESULT(no)
 873         else
 874                 LB_LINUX_TRY_COMPILE([
 875                         #include <linux/mm.h>
 876                         #include <linux/page-flags.h>
 877 ],[
 878                         cancel_dirty_page(NULL, 0);
 879 ],[
 880                         AC_MSG_RESULT(yes)
 881                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
 882                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
 883 ],[
 884                         AC_MSG_RESULT(no)
 885 ])
 886         fi
 887 ])
 888
 889 #
 890 # LC_PAGE_CONSTANT
 891 #
 892 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
 893 # it support constant page, which means the page won't be modified during the
 894 # IO.
 895 #
 896 AC_DEFUN([LC_PAGE_CONSTANT],
 897 [AC_MSG_CHECKING([if kernel have PageConstant defined])
 898 LB_LINUX_TRY_COMPILE([
 899         #include <linux/mm.h>
 900         #include <linux/page-flags.h>
 901 ],[
 902         #ifndef PG_constant
 903         #error "Have no raid5 zcopy patch"
 904         #endif
 905 ],[
 906         AC_MSG_RESULT(yes)
 907         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
 908 ],[
 909         AC_MSG_RESULT(no);
 910 ])
 911 ])
 912
 913 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
 914 AC_DEFUN([LC_PG_FS_MISC],
 915 [AC_MSG_CHECKING([kernel has PG_fs_misc])
 916 LB_LINUX_TRY_COMPILE([
 917         #include <linux/mm.h>
 918         #include <linux/page-flags.h>
 919 ],[
 920         #ifndef PG_fs_misc
 921         #error PG_fs_misc not defined in kernel
 922         #endif
 923 ],[
 924         AC_MSG_RESULT(yes)
 925         AC_DEFINE(HAVE_PG_FS_MISC, 1,
 926                   [is kernel have PG_fs_misc])
 927 ],[
 928         AC_MSG_RESULT(no)
 929 ])
 930 ])
 931
 932 # RHEL5 PageChecked and SetPageChecked defined
 933 AC_DEFUN([LC_PAGE_CHECKED],
 934 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
 935 LB_LINUX_TRY_COMPILE([
 936         #include <linux/autoconf.h>
 937 #ifdef HAVE_LINUX_MMTYPES_H
 938         #include <linux/mm_types.h>
 939 #endif
 940         #include <linux/page-flags.h>
 941 ],[
 942         struct page *p;
 943
 944         /* before 2.6.26 this define*/
 945         #ifndef PageChecked
 946         /* 2.6.26 use function instead of define for it */
 947         SetPageChecked(p);
 948         PageChecked(p);
 949         #endif
 950 ],[
 951         AC_MSG_RESULT(yes)
 952         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
 953                   [does kernel have PageChecked and SetPageChecked])
 954 ],[
 955         AC_MSG_RESULT(no)
 956 ])
 957 ])
 958
 959 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 960 [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 961 [mm/truncate.c],[
 962 AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 963             [kernel export truncate_complete_page])
 964 ],[
 965 ])
 966 ])
 967
 968 AC_DEFUN([LC_EXPORT_TRUNCATE_RANGE],
 969 [LB_CHECK_SYMBOL_EXPORT([truncate_inode_pages_range],
 970 [mm/truncate.c],[
 971 AC_DEFINE(HAVE_TRUNCATE_RANGE, 1,
 972             [kernel export truncate_inode_pages_range])
 973 ],[
 974 ])
 975 ])
 976
 977 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
 978 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
 979 [fs/dcache.c],[
 980 AC_DEFINE(HAVE_D_REHASH_COND, 1,
 981             [d_rehash_cond is exported by the kernel])
 982 ],[
 983 ])
 984 ])
 985
 986 AC_DEFUN([LC_EXPORT___D_REHASH],
 987 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
 988 [fs/dcache.c],[
 989 AC_DEFINE(HAVE___D_REHASH, 1,
 990             [__d_rehash is exported by the kernel])
 991 ],[
 992 ])
 993 ])
 994
 995 AC_DEFUN([LC_EXPORT_D_MOVE_LOCKED],
 996 [LB_CHECK_SYMBOL_EXPORT([d_move_locked],
 997 [fs/dcache.c],[
 998 AC_DEFINE(HAVE_D_MOVE_LOCKED, 1,
 999             [d_move_locked is exported by the kernel])
1000 ],[
1001 ])
1002 ])
1003
1004 AC_DEFUN([LC_EXPORT___D_MOVE],
1005 [LB_CHECK_SYMBOL_EXPORT([__d_move],
1006 [fs/dcache.c],[
1007 AC_DEFINE(HAVE___D_MOVE, 1,
1008             [__d_move is exported by the kernel])
1009 ],[
1010 ])
1011 ])
1012
1013 #
1014 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
1015 #
1016 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1017 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1018 #
1019 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1020     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1021          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1022                         [exported invalidate_mapping_pages])],
1023     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1024          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1025                         [exported invalidate_inode_pages])], [
1026        AC_MSG_ERROR([no way to invalidate pages])
1027   ])
1028     ],[])
1029 ])
1030
1031 #
1032 # LC_EXPORT_FILEMAP_FDATASYNC_RANGE
1033 #
1034 # No standard kernels export this
1035 #
1036 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1037 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1038 [mm/filemap.c],[
1039 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1040             [filemap_fdatawrite_range is exported by the kernel])
1041 ],[
1042 ])
1043 ])
1044
1045 # The actual symbol exported varies among architectures, so we need
1046 # to check many symbols (but only in the current architecture.)  No
1047 # matter what symbol is exported, the kernel #defines node_to_cpumask
1048 # to the appropriate function and that's what we use.
1049 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
1050          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
1051                                  [arch/$LINUX_ARCH/mm/numa.c],
1052                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1053                                             [node_to_cpumask is exported by
1054                                              the kernel])]) # x86_64
1055           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
1056                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1057                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1058                                             [node_to_cpumask is exported by
1059                                              the kernel])]) # ia64
1060           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
1061                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1062                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1063                                             [node_to_cpumask is exported by
1064                                              the kernel])]) # i386
1065           ])
1066
1067 # 2.6.22 lost second parameter for invalidate_bdev
1068 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1069 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1070 LB_LINUX_TRY_COMPILE([
1071         #include <linux/buffer_head.h>
1072 ],[
1073         invalidate_bdev(NULL,0);
1074 ],[
1075         AC_MSG_RESULT([yes])
1076         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1077                 [invalidate_bdev has second argument])
1078 ],[
1079         AC_MSG_RESULT([no])
1080 ])
1081 ])
1082
1083 # 2.6.18
1084
1085
1086 # 2.6.23 have return type 'void' for unregister_blkdev
1087 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1088 [AC_MSG_CHECKING([if unregister_blkdev return int])
1089 LB_LINUX_TRY_COMPILE([
1090         #include <linux/fs.h>
1091 ],[
1092         int i = unregister_blkdev(0,NULL);
1093 ],[
1094         AC_MSG_RESULT([yes])
1095         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1096                 [unregister_blkdev return int])
1097 ],[
1098         AC_MSG_RESULT([no])
1099 ])
1100 ])
1101
1102 # 2.6.23 change .sendfile to .splice_read
1103 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1104 AC_DEFUN([LC_KERNEL_SENDFILE],
1105 [AC_MSG_CHECKING([if kernel has .sendfile])
1106 LB_LINUX_TRY_COMPILE([
1107         #include <linux/fs.h>
1108 ],[
1109         struct file_operations file;
1110
1111         file.sendfile = NULL;
1112 ], [
1113         AC_MSG_RESULT([yes])
1114         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1115                 [kernel has .sendfile])
1116 ],[
1117         AC_MSG_RESULT([no])
1118 ])
1119 ])
1120
1121 # 2.6.23 change .sendfile to .splice_read
1122 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1123 [AC_MSG_CHECKING([if kernel has .splice_read])
1124 LB_LINUX_TRY_COMPILE([
1125         #include <linux/fs.h>
1126 ],[
1127         struct file_operations file;
1128
1129         file.splice_read = NULL;
1130 ], [
1131         AC_MSG_RESULT([yes])
1132         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1133                 [kernel has .slice_read])
1134 ],[
1135         AC_MSG_RESULT([no])
1136 ])
1137 ])
1138
1139 # 2.6.23 extract nfs export related data into exportfs.h
1140 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1141 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1142         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1143                 [kernel has include/exportfs.h])
1144 ],[
1145         AC_MSG_RESULT([no])
1146 ])
1147 ])
1148
1149 # 2.6.23 has new page fault handling API
1150 AC_DEFUN([LC_VM_OP_FAULT],
1151 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1152 LB_LINUX_TRY_COMPILE([
1153         #include <linux/mm.h>
1154 ],[
1155         struct vm_operations_struct op;
1156
1157         op.fault = NULL;
1158 ], [
1159         AC_MSG_RESULT([yes])
1160         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1161                 [kernel has .fault in vm_operation_struct])
1162 ],[
1163         AC_MSG_RESULT([no])
1164 ])
1165 ])
1166
1167 #2.6.23 has new shrinker API
1168 AC_DEFUN([LC_REGISTER_SHRINKER],
1169 [AC_MSG_CHECKING([if kernel has register_shrinker])
1170 LB_LINUX_TRY_COMPILE([
1171         #include <linux/mm.h>
1172 ],[
1173         register_shrinker(NULL);
1174 ], [
1175         AC_MSG_RESULT([yes])
1176         AC_DEFINE(HAVE_REGISTER_SHRINKER, 1,
1177                 [kernel has register_shrinker])
1178 ],[
1179         AC_MSG_RESULT([no])
1180 ])
1181 ])
1182
1183 # 2.6.24 has bio_endio with 2 args
1184 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1185 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1186 LB_LINUX_TRY_COMPILE([
1187         #include <linux/bio.h>
1188 ],[
1189         bio_endio(NULL, 0);
1190 ], [
1191         AC_MSG_RESULT([yes])
1192         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1193                 [kernel has bio_endio with 2 args])
1194 ],[
1195         AC_MSG_RESULT([no])
1196 ])
1197 ])
1198
1199 # 2.6.24 has new members in exports struct.
1200 AC_DEFUN([LC_FH_TO_DENTRY],
1201 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1202 LB_LINUX_TRY_COMPILE([
1203 #ifdef HAVE_LINUX_EXPORTFS_H
1204         #include <linux/exportfs.h>
1205 #else
1206         #include <linux/fs.h>
1207 #endif
1208 ],[
1209         struct export_operations exp;
1210
1211         exp.fh_to_dentry   = NULL;
1212 ], [
1213         AC_MSG_RESULT([yes])
1214         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1215                 [kernel has .fh_to_dentry member in export_operations struct])
1216 ],[
1217         AC_MSG_RESULT([no])
1218 ])
1219 ])
1220
1221 # 2.6.24 need linux/mm_types.h included
1222 AC_DEFUN([LC_HAVE_MMTYPES_H],
1223 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1224         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1225                 [kernel has include/mm_types.h])
1226 ],[
1227         AC_MSG_RESULT([no])
1228 ])
1229 ])
1230
1231 # 2.6.24 removes long aged procfs entry -> deleted member
1232 AC_DEFUN([LC_PROCFS_DELETED],
1233 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1234 LB_LINUX_TRY_COMPILE([
1235         #include <linux/proc_fs.h>
1236 ],[
1237         struct proc_dir_entry pde;
1238
1239         pde.deleted   = NULL;
1240 ], [
1241         AC_MSG_RESULT([yes])
1242         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1243                 [kernel has deleted member in procfs entry struct])
1244 ],[
1245         AC_MSG_RESULT([no])
1246 ])
1247 ])
1248
1249 # 2.6.25 change define to inline
1250 AC_DEFUN([LC_MAPPING_CAP_WRITEBACK_DIRTY],
1251 [AC_MSG_CHECKING([if kernel have mapping_cap_writeback_dirty])
1252 LB_LINUX_TRY_COMPILE([
1253         #include <linux/backing-dev.h>
1254 ],[
1255         #ifndef mapping_cap_writeback_dirty
1256         mapping_cap_writeback_dirty(NULL);
1257         #endif
1258 ],[
1259         AC_MSG_RESULT([yes])
1260         AC_DEFINE(HAVE_MAPPING_CAP_WRITEBACK_DIRTY, 1,
1261                 [kernel have mapping_cap_writeback_dirty])
1262 ],[
1263         AC_MSG_RESULT([no])
1264 ])
1265 ])
1266
1267
1268
1269 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1270 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1271 [AC_MSG_CHECKING([fs_struct use path structure])
1272 LB_LINUX_TRY_COMPILE([
1273         #include <asm/atomic.h>
1274         #include <linux/spinlock.h>
1275         #include <linux/fs_struct.h>
1276 ],[
1277         struct path path;
1278         struct fs_struct fs;
1279
1280         fs.pwd = path;
1281 ], [
1282         AC_MSG_RESULT([yes])
1283         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1284                 [fs_struct use path structure])
1285 ],[
1286         AC_MSG_RESULT([no])
1287 ])
1288 ])
1289
1290 #
1291 # LC_VFS_INTENT_PATCHES
1292 #
1293 # check if the kernel has the VFS intent patches
1294 AC_DEFUN([LC_VFS_INTENT_PATCHES],
1295 [AC_MSG_CHECKING([if the kernel has the VFS intent patches])
1296 LB_LINUX_TRY_COMPILE([
1297         #include <linux/fs.h>
1298         #include <linux/namei.h>
1299 ],[
1300         struct nameidata nd;
1301         struct lookup_intent *it;
1302
1303         it = &nd.intent;
1304         intent_init(it, IT_OPEN);
1305         it->d.lustre.it_disposition = 0;
1306         it->d.lustre.it_data = NULL;
1307 ],[
1308         AC_MSG_RESULT([yes])
1309         AC_DEFINE(HAVE_VFS_INTENT_PATCHES, 1, [VFS intent patches are applied])
1310 ],[
1311         AC_MSG_RESULT([no])
1312 ])
1313 ])
1314
1315 AC_DEFUN([LC_S_TIME_GRAN],
1316 [AC_MSG_CHECKING([if super block has s_time_gran member])
1317 LB_LINUX_TRY_COMPILE([
1318         #include <linux/fs.h>
1319 ],[
1320         struct super_block sb;
1321
1322         return sb.s_time_gran;
1323 ],[
1324         AC_MSG_RESULT([yes])
1325         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
1326 ],[
1327         AC_MSG_RESULT([no])
1328 ])
1329 ])
1330
1331 AC_DEFUN([LC_SB_TIME_GRAN],
1332 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
1333 LB_LINUX_TRY_COMPILE([
1334         #include <linux/fs.h>
1335 ],[
1336         return get_sb_time_gran(NULL);
1337 ],[
1338         AC_MSG_RESULT([yes])
1339         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
1340 ],[
1341         AC_MSG_RESULT([no])
1342 ])
1343 ])
1344
1345 #
1346 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1347 #
1348 # Check for our patched grab_cache_page_nowait_gfp() function
1349 # after 2.6.29 we can emulate this using add_to_page_cache_lru()
1350 #
1351 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
1352 [LB_CHECK_SYMBOL_EXPORT([grab_cache_page_nowait_gfp],
1353 [mm/filemap.c],[
1354         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
1355                   [kernel exports grab_cache_page_nowait_gfp])
1356         ],
1357         [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1358         [mm/filemap.c],[
1359                 AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1360                         [kernel exports add_to_page_cache_lru])
1361         ],[
1362         ])
1363         ])
1364 ])
1365
1366 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
1367 AC_DEFUN([LC_RW_TREE_LOCK],
1368 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
1369 tmp_flags="$EXTRA_KCFLAGS"
1370 EXTRA_KCFLAGS="-Werror"
1371 LB_LINUX_TRY_COMPILE([
1372         #include <linux/fs.h>
1373 ],[
1374         struct address_space a;
1375
1376         write_lock(&a.tree_lock);
1377 ],[
1378         AC_MSG_RESULT([yes])
1379         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
1380 ],[
1381         AC_MSG_RESULT([no])
1382 ])
1383 EXTRA_KCFLAGS="$tmp_flags"
1384 ])
1385
1386 AC_DEFUN([LC_CONST_ACL_SIZE],
1387 [AC_MSG_CHECKING([calc acl size])
1388 tmp_flags="$CFLAGS"
1389 CFLAGS="$CFLAGS -I$LINUX/include -I$LINUX_OBJ/include -I$LINUX_OBJ/include2 -I$LINUX/arch/`uname -m|sed -e 's/ppc.*/powerpc/' -e 's/x86_64/x86/' -e 's/i.86/x86/'`/include $EXTRA_KCFLAGS"
1390 AC_TRY_RUN([
1391 #define __KERNEL__
1392 #include <linux/autoconf.h>
1393 #include <linux/types.h>
1394 #undef __KERNEL__
1395 // block include
1396 #define __LINUX_POSIX_ACL_H
1397
1398 # ifdef CONFIG_FS_POSIX_ACL
1399 #  ifdef HAVE_XATTR_ACL
1400 #   include <linux/xattr_acl.h>
1401 #  endif
1402 #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
1403 #   include <linux/posix_acl_xattr.h>
1404 #  endif
1405 # endif
1406
1407 #include <lustre_acl.h>
1408
1409 #include <stdio.h>
1410
1411 int main(void)
1412 {
1413     int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
1414     FILE *f = fopen("acl.size","w+");
1415     fprintf(f,"%d", size);
1416     fclose(f);
1417
1418     return 0;
1419 }
1420
1421 ],[
1422         acl_size=`cat acl.size`
1423         AC_MSG_RESULT([ACL size $acl_size])
1424         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
1425 ],[
1426         AC_ERROR([ACL size can't computed])
1427 ])
1428 CFLAGS="$tmp_flags"
1429 ])
1430
1431 #
1432 # check for crypto API
1433 #
1434 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1435 [AC_MSG_CHECKING([if kernel has block cipher support])
1436 LB_LINUX_TRY_COMPILE([
1437         #include <linux/err.h>
1438         #include <linux/crypto.h>
1439 ],[
1440         struct crypto_blkcipher *tfm;
1441         tfm = crypto_alloc_blkcipher("aes", 0, 0 );
1442 ],[
1443         AC_MSG_RESULT([yes])
1444         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1445 ],[
1446         AC_MSG_RESULT([no])
1447 ])
1448 ])
1449
1450 #
1451 # check for struct hash_desc
1452 #
1453 AC_DEFUN([LC_STRUCT_HASH_DESC],
1454 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1455 LB_LINUX_TRY_COMPILE([
1456         #include <linux/err.h>
1457         #include <linux/crypto.h>
1458 ],[
1459         struct hash_desc foo;
1460 ],[
1461         AC_MSG_RESULT([yes])
1462         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1463 ],[
1464         AC_MSG_RESULT([no])
1465 ])
1466 ])
1467
1468 #
1469 # check for struct blkcipher_desc
1470 #
1471 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1472 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1473 LB_LINUX_TRY_COMPILE([
1474         #include <linux/err.h>
1475         #include <linux/crypto.h>
1476 ],[
1477         struct blkcipher_desc foo;
1478 ],[
1479         AC_MSG_RESULT([yes])
1480         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1481 ],[
1482         AC_MSG_RESULT([no])
1483 ])
1484 ])
1485
1486 #
1487 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1488 #
1489 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1490 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1491 LB_LINUX_TRY_COMPILE([
1492         #include <linux/fs.h>
1493 ],[
1494         int v = FS_RENAME_DOES_D_MOVE;
1495 ],[
1496         AC_MSG_RESULT([yes])
1497         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1498 ],[
1499         AC_MSG_RESULT([no])
1500 ])
1501 ])
1502
1503 #
1504 # LC_FUNC_F_OP_FLOCK
1505 #
1506 # rhel4.2 kernel has f_op->flock field
1507 #
1508 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
1509 [AC_MSG_CHECKING([if struct file_operations has flock field])
1510 LB_LINUX_TRY_COMPILE([
1511         #include <linux/fs.h>
1512 ],[
1513         struct file_operations ll_file_operations_flock;
1514         ll_file_operations_flock.flock = NULL;
1515 ],[
1516         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
1517                 [struct file_operations has flock field])
1518         AC_MSG_RESULT([yes])
1519 ],[
1520         AC_MSG_RESULT([no])
1521 ])
1522 ])
1523
1524 # vfs_symlink seems to have started out with 3 args until 2.6.7 where a
1525 # "mode" argument was added, but then again, in some later version it was
1526 # removed
1527 AC_DEFUN([LC_4ARGS_VFS_SYMLINK],
1528 [AC_MSG_CHECKING([if vfs_symlink wants 4 args])
1529 LB_LINUX_TRY_COMPILE([
1530         #include <linux/fs.h>
1531 ],[
1532         struct inode *dir;
1533         struct dentry *dentry;
1534         const char *oldname = NULL;
1535         int mode = 0;
1536
1537         vfs_symlink(dir, dentry, oldname, mode);
1538 ],[
1539         AC_MSG_RESULT(yes)
1540         AC_DEFINE(HAVE_4ARGS_VFS_SYMLINK, 1,
1541                   [vfs_symlink wants 4 args])
1542 ],[
1543         AC_MSG_RESULT(no)
1544 ])
1545 ])
1546
1547 # 2.6.23 has new shrinker API
1548 AC_DEFUN([LC_REGISTER_SHRINKER],
1549 [LB_CHECK_SYMBOL_EXPORT([register_shrinker],
1550 [mm/vmscan.c],[
1551         AC_DEFINE(HAVE_REGISTER_SHRINKER, 1,
1552                   [kernel exports register_shrinker])
1553 ],[
1554 ])
1555 ])
1556
1557 #2.6.27
1558 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1559 [AC_MSG_CHECKING([inode_operations->permission has two args])
1560 LB_LINUX_TRY_COMPILE([
1561         #include <linux/fs.h>
1562 ],[
1563         struct inode *inode;
1564
1565         inode->i_op->permission(NULL,0);
1566 ],[
1567         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1568                   [inode_operations->permission has two args])
1569         AC_MSG_RESULT([yes])
1570 ],[
1571         AC_MSG_RESULT([no])
1572 ])
1573 ])
1574
1575 # 2.6.27 has file_remove_suid instead of remove_suid
1576 AC_DEFUN([LC_FILE_REMOVE_SUID],
1577 [AC_MSG_CHECKING([kernel has file_remove_suid])
1578 LB_LINUX_TRY_COMPILE([
1579         #include <linux/fs.h>
1580 ],[
1581         file_remove_suid(NULL);
1582 ],[
1583         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1584                   [kernel have file_remove_suid])
1585         AC_MSG_RESULT([yes])
1586 ],[
1587         AC_MSG_RESULT([no])
1588 ])
1589 ])
1590
1591 # 2.6.27 have new page locking API
1592 AC_DEFUN([LC_TRYLOCKPAGE],
1593 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1594 LB_LINUX_TRY_COMPILE([
1595         #include <linux/pagemap.h>
1596 ],[
1597         trylock_page(NULL);
1598 ],[
1599         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1600                   [kernel uses trylock_page for page lock])
1601         AC_MSG_RESULT([yes])
1602 ],[
1603         AC_MSG_RESULT([no])
1604 ])
1605 ])
1606
1607 # vfs_symlink seems to have started out with 3 args until 2.6.7 where a
1608 # "mode" argument was added, but then again, in some later version it was
1609 # removed
1610 AC_DEFUN([LC_4ARGS_VFS_SYMLINK],
1611 [AC_MSG_CHECKING([if vfs_symlink wants 4 args])
1612 LB_LINUX_TRY_COMPILE([
1613         #include <linux/fs.h>
1614 ],[
1615         struct inode *dir;
1616         struct dentry *dentry;
1617         const char *oldname = NULL;
1618         int mode = 0;
1619
1620         vfs_symlink(dir, dentry, oldname, mode);
1621 ],[
1622         AC_MSG_RESULT(yes)
1623         AC_DEFINE(HAVE_4ARGS_VFS_SYMLINK, 1,
1624                   [vfs_symlink wants 4 args])
1625 ],[
1626         AC_MSG_RESULT(no)
1627 ])
1628 ])
1629
1630 # 2.6.27 sles11 remove the bi_hw_segments
1631 AC_DEFUN([LC_BI_HW_SEGMENTS],
1632 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1633 LB_LINUX_TRY_COMPILE([
1634         #include <linux/bio.h>
1635 ],[
1636         struct bio io;
1637         io.bi_hw_segments = 0;
1638 ],[
1639         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1640                 [struct bio has a bi_hw_segments field])
1641         AC_MSG_RESULT([yes])
1642 ],[
1643         AC_MSG_RESULT([no])
1644 ])
1645 ])
1646
1647 # 2.6.27 sles11 move the quotaio_v1.h to fs
1648 AC_DEFUN([LC_HAVE_QUOTAIO_V1_H],
1649 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v1.h],[
1650         AC_DEFINE(HAVE_QUOTAIO_V1_H, 1,
1651                 [kernel has include/linux/quotaio_v1.h])
1652 ],[
1653         AC_MSG_RESULT([no])
1654 ])
1655 ])
1656
1657 # sles10 sp2 need 5 parameter for vfs_symlink
1658 AC_DEFUN([LC_VFS_SYMLINK_5ARGS],
1659 [AC_MSG_CHECKING([vfs_symlink need 5 parameter])
1660 LB_LINUX_TRY_COMPILE([
1661         #include <linux/fs.h>
1662 ],[
1663         struct inode *dir = NULL;
1664         struct dentry *dentry = NULL;
1665         struct vfsmount *mnt = NULL;
1666         const char * path = NULL;
1667         vfs_symlink(dir, dentry, mnt, path, 0);
1668 ],[
1669         AC_DEFINE(HAVE_VFS_SYMLINK_5ARGS, 1,
1670                 [vfs_symlink need 5 parameteres])
1671         AC_MSG_RESULT([yes])
1672 ],[
1673         AC_MSG_RESULT([no])
1674 ])
1675 ])
1676
1677 # 2.6.27 removed the read_inode from super_operations.
1678 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1679 [AC_MSG_CHECKING([super_operations has a read_inode field])
1680 LB_LINUX_TRY_COMPILE([
1681         #include <linux/fs.h>
1682 ],[
1683         struct super_operations *sop;
1684         sop->read_inode(NULL);
1685 ],[
1686         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1687                 [super_operations has a read_inode])
1688         AC_MSG_RESULT([yes])
1689 ],[
1690         AC_MSG_RESULT([no])
1691 ])
1692 ])
1693
1694 # 2.6.27 sles11 has sb_any_quota_active
1695 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1696 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1697 LB_LINUX_TRY_COMPILE([
1698         #include <linux/quotaops.h>
1699 ],[
1700         sb_any_quota_active(NULL);
1701 ],[
1702         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1703                 [Kernel has a sb_any_quota_active])
1704         AC_MSG_RESULT([yes])
1705 ],[
1706         AC_MSG_RESULT([no])
1707 ])
1708 ])
1709
1710 # 2.6.27 sles11 has sb_has_quota_active
1711 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1712 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1713 LB_LINUX_TRY_COMPILE([
1714         #include <linux/quotaops.h>
1715 ],[
1716         sb_has_quota_active(NULL, 0);
1717 ],[
1718         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1719                 [Kernel has a sb_has_quota_active])
1720         AC_MSG_RESULT([yes])
1721 ],[
1722         AC_MSG_RESULT([no])
1723 ])
1724 ])
1725
1726 # 2.6.27 has inode_permission instead of permisson
1727 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1728 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1729 [fs/namei.c],[
1730 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1731             [inode_permission is exported by the kernel])
1732 ],[
1733 ])
1734 ])
1735
1736 # 2.6.27 use 5th parameter in quota_on for remount.
1737 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1738 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1739 LB_LINUX_TRY_COMPILE([
1740         #include <linux/quota.h>
1741 ],[
1742         struct quotactl_ops *qop;
1743         qop->quota_on(NULL, 0, 0, NULL, 0);
1744 ],[
1745         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1746                 [quota_on needs 5 paramters])
1747         AC_MSG_RESULT([yes])
1748 ],[
1749         AC_MSG_RESULT([no])
1750 ])
1751 ])
1752
1753 # 2.6.27 use 3th parameter in quota_off for remount.
1754 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1755 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1756 LB_LINUX_TRY_COMPILE([
1757         #include <linux/quota.h>
1758 ],[
1759         struct quotactl_ops *qop;
1760         qop->quota_off(NULL, 0, 0);
1761 ],[
1762         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1763                 [quota_off needs 3 paramters])
1764         AC_MSG_RESULT([yes])
1765 ],[
1766         AC_MSG_RESULT([no])
1767 ])
1768 ])
1769
1770 # 2.6.27 has vfs_dq_off inline function.
1771 AC_DEFUN([LC_VFS_DQ_OFF],
1772 [AC_MSG_CHECKING([vfs_dq_off is defined])
1773 LB_LINUX_TRY_COMPILE([
1774         #include <linux/quotaops.h>
1775 ],[
1776         vfs_dq_off(NULL, 0);
1777 ],[
1778         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1779         AC_MSG_RESULT([yes])
1780 ],[
1781         AC_MSG_RESULT([no])
1782 ])
1783 ])
1784
1785 #
1786 # LC_LINUX_FIEMAP_H
1787 #
1788 # If we have fiemap.h
1789 # after 2.6.27 use fiemap.h in include/linux
1790 #
1791 AC_DEFUN([LC_LINUX_FIEMAP_H],
1792 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1793         AC_MSG_CHECKING([if fiemap.h can be compiled])
1794         LB_LINUX_TRY_COMPILE([
1795                 #include <linux/types.h>
1796                 #include <linux/fiemap.h>
1797         ],[],[
1798                 AC_MSG_RESULT([yes])
1799                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1800         ],[
1801                 AC_MSG_RESULT([no])
1802         ])
1803 ],
1804 [])
1805 ])
1806
1807 # LC_LOCK_MAP_ACQUIRE
1808 # after 2.6.27 lock_map_acquire replaces lock_acquire
1809 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1810 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1811 LB_LINUX_TRY_COMPILE([
1812         #include <linux/lockdep.h>
1813 ],[
1814         lock_map_acquire(NULL);
1815 ],[
1816         AC_MSG_RESULT(yes)
1817         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1818                 [lock_map_acquire is defined])
1819 ],[
1820         AC_MSG_RESULT(no)
1821 ])
1822 ])
1823
1824 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1825 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1826 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1827 LB_LINUX_TRY_COMPILE([
1828         #include <linux/blkdev.h>
1829 ],[
1830         blk_queue_logical_block_size(NULL, 0);
1831 ],[
1832         AC_MSG_RESULT(yes)
1833         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1834                   [blk_queue_logical_block_size is defined])
1835 ],[
1836         AC_MSG_RESULT(no)
1837 ])
1838 ])
1839
1840 #
1841 # LC_PROG_LINUX
1842 #
1843 # Lustre linux kernel checks
1844 #
1845 AC_DEFUN([LC_PROG_LINUX],
1846          [LC_LUSTRE_VERSION_H
1847          if test x$enable_server = xyes ; then
1848              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
1849              LC_FUNC_DEV_SET_RDONLY
1850              LC_STACK_SIZE
1851              LC_CONFIG_BACKINGFS
1852          fi
1853          LC_CONFIG_PINGER
1854          LC_CONFIG_CHECKSUM
1855          LC_CONFIG_LIBLUSTRE_RECOVERY
1856          LC_CONFIG_HEALTH_CHECK_WRITE
1857          LC_CONFIG_LRU_RESIZE
1858          LC_QUOTA_MODULE
1859
1860          # RHEL4 patches
1861          LC_EXPORT_TRUNCATE_COMPLETE
1862          LC_EXPORT_TRUNCATE_RANGE
1863          LC_EXPORT_D_REHASH_COND
1864          LC_EXPORT___D_REHASH
1865          LC_EXPORT_D_MOVE_LOCKED
1866          LC_EXPORT___D_MOVE
1867          LC_EXPORT_NODE_TO_CPUMASK
1868
1869          LC_HEADER_LDISKFS_XATTR
1870          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1871          LC_STRUCT_STATFS
1872          LC_FILEMAP_POPULATE
1873          LC_D_ADD_UNIQUE
1874          LC_BIT_SPINLOCK_H
1875
1876          LC_XATTR_ACL
1877          LC_POSIX_ACL_XATTR_H
1878          LC_CONST_ACL_SIZE
1879
1880          LC_STRUCT_INTENT_FILE
1881
1882          LC_CAPA_CRYPTO
1883          LC_CONFIG_RMTCLIENT
1884          LC_CONFIG_GSS
1885          LC_FUNC_MS_FLOCK_LOCK
1886          LC_FUNC_HAVE_CAN_SLEEP_ARG
1887          LC_FUNC_F_OP_FLOCK
1888          LC_QUOTA_READ
1889          LC_COOKIE_FOLLOW_LINK
1890          LC_FUNC_RCU
1891          LC_PERCPU_COUNTER
1892          LC_QUOTA64
1893          LC_4ARGS_VFS_SYMLINK
1894
1895          # does the kernel have VFS intent patches?
1896          LC_VFS_INTENT_PATCHES
1897
1898          # ~2.6.11
1899          LC_S_TIME_GRAN
1900          LC_SB_TIME_GRAN
1901
1902          # 2.6.12
1903          LC_RW_TREE_LOCK
1904          LC_EXPORT_SYNCHRONIZE_RCU
1905
1906          # 2.6.15
1907          LC_INODE_I_MUTEX
1908
1909          # 2.6.16
1910          LC_SECURITY_PLUG  # for SLES10 SP2
1911
1912          # 2.6.17
1913          LC_INODE_IPRIVATE
1914          LC_DQUOTOFF_MUTEX
1915
1916          # 2.6.18
1917          LC_NR_PAGECACHE
1918          LC_STATFS_DENTRY_PARAM
1919          LC_VFS_KERN_MOUNT
1920          LC_INVALIDATEPAGE_RETURN_INT
1921          LC_UMOUNTBEGIN_HAS_VFSMOUNT
1922          LC_SEQ_LOCK
1923          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1924          if test x$enable_server = xyes ; then
1925                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
1926          fi
1927
1928          #2.6.18 + RHEL5 (fc6)
1929          LC_PG_FS_MISC
1930          LC_PAGE_CHECKED
1931          LC_LINUX_FIEMAP_H
1932
1933          # 2.6.19
1934          LC_INODE_BLKSIZE
1935          LC_VFS_READDIR_U64_INO
1936          LC_FILE_WRITEV
1937          LC_FILE_READV
1938
1939          # 2.6.20
1940          LC_CANCEL_DIRTY_PAGE
1941
1942          # raid5-zerocopy patch
1943          LC_PAGE_CONSTANT
1944
1945          # 2.6.22
1946          LC_INVALIDATE_BDEV_2ARG
1947          LC_ASYNC_BLOCK_CIPHER
1948          LC_STRUCT_HASH_DESC
1949          LC_STRUCT_BLKCIPHER_DESC
1950          LC_FS_RENAME_DOES_D_MOVE
1951          # 2.6.23
1952          LC_UNREGISTER_BLKDEV_RETURN_INT
1953          LC_KERNEL_SPLICE_READ
1954          LC_KERNEL_SENDFILE
1955          LC_HAVE_EXPORTFS_H
1956          LC_VM_OP_FAULT
1957          LC_REGISTER_SHRINKER
1958
1959          # 2.6.24
1960          LC_HAVE_MMTYPES_H
1961          LC_BIO_ENDIO_2ARG
1962          LC_FH_TO_DENTRY
1963          LC_PROCFS_DELETED
1964
1965          #2.6.25
1966          LC_MAPPING_CAP_WRITEBACK_DIRTY
1967
1968          # 2.6.26
1969          LC_FS_STRUCT_USE_PATH
1970
1971          # 2.6.27
1972          LC_INODE_PERMISION_2ARGS
1973          LC_FILE_REMOVE_SUID
1974          LC_TRYLOCKPAGE
1975          LC_READ_INODE_IN_SBOPS
1976          LC_EXPORT_INODE_PERMISSION
1977          LC_QUOTA_ON_5ARGS
1978          LC_QUOTA_OFF_3ARGS
1979          LC_VFS_DQ_OFF
1980          LC_LOCK_MAP_ACQUIRE
1981
1982          # 2.6.27.15-2 sles11
1983          LC_BI_HW_SEGMENTS
1984          LC_HAVE_QUOTAIO_V1_H
1985          LC_VFS_SYMLINK_5ARGS
1986          LC_SB_ANY_QUOTA_ACTIVE
1987          LC_SB_HAS_QUOTA_ACTIVE
1988
1989          # 2.6.31
1990          LC_BLK_QUEUE_LOG_BLK_SIZE
1991 ])
1992
1993 #
1994 # LC_CONFIG_CLIENT_SERVER
1995 #
1996 # Build client/server sides of Lustre
1997 #
1998 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
1999 [AC_MSG_CHECKING([whether to build Lustre server support])
2000 AC_ARG_ENABLE([server],
2001         AC_HELP_STRING([--disable-server],
2002                         [disable Lustre server support]),
2003         [],[enable_server='yes'])
2004 AC_MSG_RESULT([$enable_server])
2005
2006 AC_MSG_CHECKING([whether to build Lustre client support])
2007 AC_ARG_ENABLE([client],
2008         AC_HELP_STRING([--disable-client],
2009                         [disable Lustre client support]),
2010         [],[enable_client='yes'])
2011 AC_MSG_RESULT([$enable_client])])
2012
2013 #
2014 # LC_CONFIG_LIBLUSTRE
2015 #
2016 # whether to build liblustre
2017 #
2018 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2019 [AC_MSG_CHECKING([whether to build Lustre library])
2020 AC_ARG_ENABLE([liblustre],
2021         AC_HELP_STRING([--disable-liblustre],
2022                         [disable building of Lustre library]),
2023         [],[enable_liblustre=$with_sysio])
2024 AC_MSG_RESULT([$enable_liblustre])
2025 # only build sysio if liblustre is built
2026 with_sysio="$enable_liblustre"
2027
2028 AC_MSG_CHECKING([whether to build liblustre tests])
2029 AC_ARG_ENABLE([liblustre-tests],
2030         AC_HELP_STRING([--enable-liblustre-tests],
2031                         [enable liblustre tests, if --disable-tests is used]),
2032         [],[enable_liblustre_tests=$enable_tests])
2033 if test x$enable_liblustre != xyes ; then
2034    enable_liblustre_tests='no'
2035 fi
2036 AC_MSG_RESULT([$enable_liblustre_tests])
2037
2038 AC_MSG_CHECKING([whether to enable liblustre acl])
2039 AC_ARG_ENABLE([liblustre-acl],
2040         AC_HELP_STRING([--disable-liblustre-acl],
2041                         [disable ACL support for liblustre]),
2042         [],[enable_liblustre_acl=yes])
2043 AC_MSG_RESULT([$enable_liblustre_acl])
2044 if test x$enable_liblustre_acl = xyes ; then
2045   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2046 fi
2047
2048 # 2.6.29 change prepare/commit_write to write_begin/end
2049 AC_DEFUN([LC_WRITE_BEGIN_END],
2050 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2051 LB_LINUX_TRY_COMPILE([
2052         #include <linux/fs.h>
2053         #include <linux/pagemap.h>
2054 #ifdef HAVE_LINUX_MMTYPES_H
2055         #include <linux/mm_types.h>
2056 #endif
2057 ],[
2058         struct address_space_operations aops;
2059         struct page *page;
2060
2061         aops.write_begin = NULL;
2062         aops.write_end = NULL;
2063         page = grab_cache_page_write_begin(NULL, 0, 0);
2064 ], [
2065         AC_MSG_RESULT([yes])
2066         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2067                 [kernel has .write_begin/end])
2068 ],[
2069         AC_MSG_RESULT([no])
2070 ])
2071 ])
2072
2073 # 2.6.29 blkdev_put has 2 arguments
2074 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2075 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2076 LB_LINUX_TRY_COMPILE([
2077         #include <linux/fs.h>
2078 ],[
2079         blkdev_put(NULL, 0);
2080 ],[
2081         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2082                 [blkdev_put needs 2 paramters])
2083         AC_MSG_RESULT([yes])
2084 ],[
2085         AC_MSG_RESULT([no])
2086 ])
2087 ])
2088
2089 # 2.6.29 dentry_open has 4 arguments
2090 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2091 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2092 LB_LINUX_TRY_COMPILE([
2093         #include <linux/fs.h>
2094 ],[
2095         dentry_open(NULL, NULL, 0, NULL);
2096 ],[
2097         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2098                 [dentry_open needs 4 paramters])
2099         AC_MSG_RESULT([yes])
2100 ],[
2101         AC_MSG_RESULT([no])
2102 ])
2103 ])
2104
2105 #
2106 # --enable-mpitest
2107 #
2108 AC_ARG_ENABLE(mpitests,
2109         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2110                            [include mpi tests]),
2111         [
2112          enable_mpitests=yes
2113          case $enableval in
2114          yes)
2115                 MPICC_WRAPPER=mpicc
2116                 ;;
2117          no)
2118                 enable_mpitests=no
2119                 ;;
2120          *)
2121                 MPICC_WRAPPER=$enableval
2122                  ;;
2123          esac
2124         ],
2125         [
2126         MPICC_WRAPPER=mpicc
2127         enable_mpitests=yes
2128         ]
2129 )
2130
2131 if test x$enable_mpitests != xno; then
2132         AC_MSG_CHECKING([whether mpitests can be built])
2133         oldcc=$CC
2134         CC=$MPICC_WRAPPER
2135         AC_LINK_IFELSE(
2136             [AC_LANG_PROGRAM([[
2137                     #include <mpi.h>
2138                 ]],[[
2139                     int flag;
2140                     MPI_Initialized(&flag);
2141                 ]])],
2142             [
2143                     AC_MSG_RESULT([yes])
2144             ],[
2145                     AC_MSG_RESULT([no])
2146                     enable_mpitests=no
2147         ])
2148         CC=$oldcc
2149 fi
2150 AC_SUBST(MPICC_WRAPPER)
2151
2152 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2153 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2154
2155 LC_CONFIG_PINGER
2156 LC_CONFIG_LIBLUSTRE_RECOVERY
2157 ])
2158
2159 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
2160 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
2161 AC_ARG_ENABLE([lru_resize],
2162         AC_HELP_STRING([--enable-lru-resize],
2163                         [enable lru resize support]),
2164         [],[enable_lru_resize='yes'])
2165 AC_MSG_RESULT([$enable_lru_resize])
2166 if test x$enable_lru_resize != xno; then
2167    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
2168 fi
2169 ])
2170
2171 #
2172 # LC_CONFIG_QUOTA
2173 #
2174 # whether to enable quota support global control
2175 #
2176 AC_DEFUN([LC_CONFIG_QUOTA],
2177 [AC_ARG_ENABLE([quota],
2178         AC_HELP_STRING([--enable-quota],
2179                         [enable quota support]),
2180         [],[enable_quota='yes'])
2181 ])
2182
2183 # whether to enable quota support(kernel modules)
2184 AC_DEFUN([LC_QUOTA_MODULE],
2185 [if test x$enable_quota != xno; then
2186     LB_LINUX_CONFIG([QUOTA],[
2187         enable_quota_module='yes'
2188         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
2189     ],[
2190         enable_quota_module='no'
2191         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
2192     ])
2193 fi
2194 ])
2195
2196 AC_DEFUN([LC_QUOTA],
2197 [#check global
2198 LC_CONFIG_QUOTA
2199 #check for utils
2200 AC_CHECK_HEADER(sys/quota.h,
2201                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2202                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2203 ])
2204
2205 AC_DEFUN([LC_QUOTA_READ],
2206 [AC_MSG_CHECKING([if kernel supports quota_read])
2207 LB_LINUX_TRY_COMPILE([
2208         #include <linux/fs.h>
2209 ],[
2210         struct super_operations sp;
2211         void *i = (void *)sp.quota_read;
2212 ],[
2213         AC_MSG_RESULT([yes])
2214         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
2215 ],[
2216         AC_MSG_RESULT([no])
2217 ])
2218 ])
2219
2220 #
2221 # LC_CONFIG_SPLIT
2222 #
2223 # whether to enable split support
2224 #
2225 AC_DEFUN([LC_CONFIG_SPLIT],
2226 [AC_MSG_CHECKING([whether to enable split support])
2227 AC_ARG_ENABLE([split],
2228         AC_HELP_STRING([--enable-split],
2229                         [enable split support]),
2230         [],[enable_split='no'])
2231 AC_MSG_RESULT([$enable_split])
2232 if test x$enable_split != xno; then
2233    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2234 fi
2235 ])
2236
2237 #
2238 # LC_COOKIE_FOLLOW_LINK
2239 #
2240 # kernel 2.6.13+ ->follow_link returns a cookie
2241 #
2242
2243 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
2244 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
2245 LB_LINUX_TRY_COMPILE([
2246         #include <linux/fs.h>
2247         #include <linux/namei.h>
2248 ],[
2249         struct dentry dentry;
2250         struct nameidata nd;
2251
2252         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
2253 ],[
2254         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
2255         AC_MSG_RESULT([yes])
2256 ],[
2257         AC_MSG_RESULT([no])
2258 ])
2259 ])
2260
2261 #
2262 # LC_FUNC_RCU
2263 #
2264 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
2265 # call_rcu takes three parameters.
2266 #
2267 AC_DEFUN([LC_FUNC_RCU],
2268 [AC_MSG_CHECKING([if kernel have RCU supported])
2269 LB_LINUX_TRY_COMPILE([
2270         #include <linux/rcupdate.h>
2271 ],[],[
2272         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
2273         AC_MSG_RESULT([yes])
2274
2275         AC_MSG_CHECKING([if call_rcu takes three parameters])
2276         LB_LINUX_TRY_COMPILE([
2277                 #include <linux/rcupdate.h>
2278         ],[
2279                 struct rcu_head rh;
2280                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
2281         ],[
2282                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
2283                 AC_MSG_RESULT([yes])
2284         ],[
2285                 AC_MSG_RESULT([no])
2286         ])
2287
2288 ],[
2289         AC_MSG_RESULT([no])
2290 ])
2291 ])
2292
2293 #
2294 # LC_QUOTA64
2295 # linux kernel have 64-bit limits support
2296 #
2297 AC_DEFUN([LC_QUOTA64],
2298 [if test x$enable_quota_module = xyes -a x$enable_server = xyes ; then
2299         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
2300         LB_LINUX_TRY_COMPILE([
2301                 #include <linux/kernel.h>
2302                 #include <linux/fs.h>
2303                 #include <linux/quotaio_v2.h>
2304                 int versions[] = V2_INITQVERSIONS_R1;
2305                 struct v2_disk_dqblk_r1 dqblk_r1;
2306         ],[],[
2307                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
2308                 AC_MSG_RESULT([yes])
2309         ],[
2310         tmp_flags="$EXTRA_KCFLAGS"
2311         EXTRA_KCFLAGS="-I $LINUX/fs"
2312         LB_LINUX_TRY_COMPILE([
2313                 #include <linux/kernel.h>
2314                 #include <linux/fs.h>
2315                 #include <quotaio_v2.h>
2316                 struct v2r1_disk_dqblk dqblk_r1;
2317         ],[],[
2318                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
2319                 AC_MSG_RESULT([yes])
2320         ],[
2321                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
2322                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
2323                 ],[])
2324                 AC_MSG_RESULT([no])
2325         ])
2326         EXTRA_KCFLAGS=$tmp_flags
2327         ])
2328 fi
2329 ])
2330
2331 # LC_SECURITY_PLUG  # for SLES10 SP2
2332 # check security plug in sles10 sp2 kernel
2333 AC_DEFUN([LC_SECURITY_PLUG],
2334 [AC_MSG_CHECKING([If kernel has security plug support])
2335 LB_LINUX_TRY_COMPILE([
2336         #include <linux/fs.h>
2337 ],[
2338         struct dentry   *dentry;
2339         struct vfsmount *mnt;
2340         struct iattr    *iattr;
2341
2342         notify_change(dentry, mnt, iattr);
2343 ],[
2344         AC_MSG_RESULT(yes)
2345         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
2346                 [SLES10 SP2 use extra parameter in vfs])
2347 ],[
2348         AC_MSG_RESULT(no)
2349 ])
2350 ])
2351
2352 AC_DEFUN([LC_PERCPU_COUNTER],
2353 [AC_MSG_CHECKING([if have struct percpu_counter defined])
2354 LB_LINUX_TRY_COMPILE([
2355         #include <linux/percpu_counter.h>
2356 ],[],[
2357         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
2358         AC_MSG_RESULT([yes])
2359
2360         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
2361         LB_LINUX_TRY_COMPILE([
2362                 #include <linux/percpu_counter.h>
2363         ],[
2364                 struct percpu_counter c;
2365                 percpu_counter_init(&c, 0);
2366         ],[
2367                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
2368                                                    arguments])
2369                 AC_MSG_RESULT([yes])
2370         ],[
2371                 AC_MSG_RESULT([no])
2372         ])
2373 ],[
2374         AC_MSG_RESULT([no])
2375 ])
2376 ])
2377
2378 #
2379 # LC_CONFIGURE
2380 #
2381 # other configure checks
2382 #
2383 AC_DEFUN([LC_CONFIGURE],
2384 [LC_CONFIG_OBD_BUFFER_SIZE
2385
2386 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2387         CFLAGS="$CFLAGS -Werror"
2388 fi
2389
2390 # include/liblustre.h
2391 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2392
2393 # liblustre/llite_lib.h
2394 AC_CHECK_HEADERS([xtio.h file.h])
2395
2396 # liblustre/dir.c
2397 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2398
2399 # liblustre/lutil.c
2400 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2401 AC_CHECK_FUNCS([inet_ntoa])
2402
2403 # libsysio/src/readlink.c
2404 LC_READLINK_SSIZE_T
2405
2406 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2407 AC_CHECK_HEADERS([linux/random.h], [], [],
2408                  [#ifdef HAVE_LINUX_TYPES_H
2409                   # include <linux/types.h>
2410                   #endif
2411                  ])
2412
2413 # utils/llverfs.c
2414 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2415
2416 # check for -lz support
2417 ZLIB=""
2418 AC_CHECK_LIB([z],
2419              [adler32],
2420              [AC_CHECK_HEADERS([zlib.h],
2421                                [ZLIB="-lz"
2422                                 AC_DEFINE([HAVE_ADLER], 1,
2423                                           [support alder32 checksum type])],
2424                                [AC_MSG_WARN([No zlib-devel package found,
2425                                              unable to use adler32 checksum])])],
2426              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2427 )
2428 AC_SUBST(ZLIB)
2429
2430 # Super safe df
2431 AC_ARG_ENABLE([mindf],
2432       AC_HELP_STRING([--enable-mindf],
2433                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2434       [],[])
2435 if test "$enable_mindf" = "yes" ;  then
2436       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2437 fi
2438
2439 AC_ARG_ENABLE([fail_alloc],
2440         AC_HELP_STRING([--disable-fail-alloc],
2441                 [disable randomly alloc failure]),
2442         [],[enable_fail_alloc=yes])
2443 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2444 AC_MSG_RESULT([$enable_fail_alloc])
2445 if test x$enable_fail_alloc != xno ; then
2446         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2447 fi
2448
2449 AC_ARG_ENABLE([invariants],
2450         AC_HELP_STRING([--enable-invariants],
2451                 [enable invariant checking (cpu intensive)]),
2452         [],[])
2453 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2454 AC_MSG_RESULT([$enable_invariants])
2455 if test x$enable_invariants = xyes ; then
2456         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2457 fi
2458
2459 AC_ARG_ENABLE([lu_ref],
2460         AC_HELP_STRING([--enable-lu_ref],
2461                 [enable lu_ref reference tracking code]),
2462         [],[])
2463 AC_MSG_CHECKING([whether to track references with lu_ref])
2464 AC_MSG_RESULT([$enable_lu_ref])
2465 if test x$enable_lu_ref = xyes ; then
2466         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2467 fi
2468
2469          #2.6.29
2470          LC_WRITE_BEGIN_END
2471          LC_D_OBTAIN_ALIAS
2472          LC_BLKDEV_PUT_2ARGS
2473          LC_DENTRY_OPEN_4ARGS
2474
2475 ])
2476
2477 #
2478 # LC_CONDITIONALS
2479 #
2480 # AM_CONDITIONALS for lustre
2481 #
2482 AC_DEFUN([LC_CONDITIONALS],
2483 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2484 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2485 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2486 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2487 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2488 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2489 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2490 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2491 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2492 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2493 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2494 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2495 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2496 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2497 ])
2498
2499 #
2500 # LC_CONFIG_FILES
2501 #
2502 # files that should be generated with AC_OUTPUT
2503 #
2504 AC_DEFUN([LC_CONFIG_FILES],
2505 [AC_CONFIG_FILES([
2506 lustre/Makefile
2507 lustre/autoMakefile
2508 lustre/autoconf/Makefile
2509 lustre/contrib/Makefile
2510 lustre/doc/Makefile
2511 lustre/include/Makefile
2512 lustre/include/lustre_ver.h
2513 lustre/include/linux/Makefile
2514 lustre/include/lustre/Makefile
2515 lustre/kernel_patches/targets/2.6-rhel5.target
2516 lustre/kernel_patches/targets/2.6-sles10.target
2517 lustre/kernel_patches/targets/2.6-sles11.target
2518 lustre/kernel_patches/targets/2.6-oel5.target
2519 lustre/kernel_patches/targets/2.6-fc11.target
2520 lustre/kernel_patches/targets/2.6-fc12.target
2521 lustre/ldlm/Makefile
2522 lustre/fid/Makefile
2523 lustre/fid/autoMakefile
2524 lustre/liblustre/Makefile
2525 lustre/liblustre/tests/Makefile
2526 lustre/liblustre/tests/mpi/Makefile
2527 lustre/llite/Makefile
2528 lustre/llite/autoMakefile
2529 lustre/lclient/Makefile
2530 lustre/lov/Makefile
2531 lustre/lov/autoMakefile
2532 lustre/lvfs/Makefile
2533 lustre/lvfs/autoMakefile
2534 lustre/mdc/Makefile
2535 lustre/mdc/autoMakefile
2536 lustre/lmv/Makefile
2537 lustre/lmv/autoMakefile
2538 lustre/mds/Makefile
2539 lustre/mds/autoMakefile
2540 lustre/mdt/Makefile
2541 lustre/mdt/autoMakefile
2542 lustre/cmm/Makefile
2543 lustre/cmm/autoMakefile
2544 lustre/mdd/Makefile
2545 lustre/mdd/autoMakefile
2546 lustre/fld/Makefile
2547 lustre/fld/autoMakefile
2548 lustre/obdclass/Makefile
2549 lustre/obdclass/autoMakefile
2550 lustre/obdclass/linux/Makefile
2551 lustre/obdecho/Makefile
2552 lustre/obdecho/autoMakefile
2553 lustre/obdfilter/Makefile
2554 lustre/obdfilter/autoMakefile
2555 lustre/osc/Makefile
2556 lustre/osc/autoMakefile
2557 lustre/ost/Makefile
2558 lustre/ost/autoMakefile
2559 lustre/osd/Makefile
2560 lustre/osd/autoMakefile
2561 lustre/mgc/Makefile
2562 lustre/mgc/autoMakefile
2563 lustre/mgs/Makefile
2564 lustre/mgs/autoMakefile
2565 lustre/ptlrpc/Makefile
2566 lustre/ptlrpc/autoMakefile
2567 lustre/ptlrpc/gss/Makefile
2568 lustre/ptlrpc/gss/autoMakefile
2569 lustre/quota/Makefile
2570 lustre/quota/autoMakefile
2571 lustre/scripts/Makefile
2572 lustre/tests/Makefile
2573 lustre/tests/mpi/Makefile
2574 lustre/utils/Makefile
2575 lustre/utils/gss/Makefile
2576 lustre/obdclass/darwin/Makefile
2577 ])
2578 ])