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=yes
  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 $2
  47                 ;;
  48 esac
  49 ])
  50
  51 #
  52 # LC_CONFIG_OBD_BUFFER_SIZE
  53 #
  54 # the maximum buffer size of lctl ioctls
  55 #
  56 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
  57 [AC_MSG_CHECKING([maximum OBD ioctl size])
  58 AC_ARG_WITH([obd-buffer-size],
  59         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  60                         [set lctl ioctl maximum bytes (default=8192)]),
  61         [
  62                 OBD_BUFFER_SIZE=$with_obd_buffer_size
  63         ],[
  64                 OBD_BUFFER_SIZE=8192
  65         ])
  66 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  67 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
  68 ])
  69
  70 #
  71 # LC_READLINK_SSIZE_T
  72 #
  73 AC_DEFUN([LC_READLINK_SSIZE_T],
  74 [AC_MSG_CHECKING([if readlink returns ssize_t])
  75 AC_TRY_COMPILE([
  76         #include <unistd.h>
  77 ],[
  78         ssize_t readlink(const char *, char *, size_t);
  79 ],[
  80         AC_MSG_RESULT([yes])
  81         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
  82 ],[
  83         AC_MSG_RESULT([no])
  84 ])
  85 ])
  86
  87 #
  88 # only for Lustre-patched kernels
  89 #
  90 AC_DEFUN([LC_LUSTRE_VERSION_H],
  91 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
  92         rm -f "$LUSTRE/include/linux/lustre_version.h"
  93 ],[
  94         touch "$LUSTRE/include/linux/lustre_version.h"
  95         if test x$enable_server = xyes ; then
  96                 AC_MSG_WARN([Unpatched kernel detected.])
  97                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
  98                 AC_MSG_WARN([disabling server build])
  99                 enable_server='no'
 100         fi
 101 ])
 102 ])
 103
 104 #
 105 # LC_FUNC_DEV_SET_RDONLY
 106 #
 107 # check whether dev_set_rdonly is exported.  This is needed until we
 108 # have another mechanism to fence IO from the underlying device.
 109 #
 110 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
 111 [LB_CHECK_SYMBOL_EXPORT([dev_set_rdonly],
 112 [block/ll_rw_block.c,block/blk-core.c],[
 113         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel exports dev_set_rdonly])
 114 ],[
 115         AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])
 116 ])
 117 ])
 118
 119 #
 120 # Ensure stack size big than 8k in Lustre server (all kernels)
 121 #
 122 AC_DEFUN([LC_STACK_SIZE],
 123 [AC_MSG_CHECKING([stack size big than 8k])
 124 LB_LINUX_TRY_COMPILE([
 125         #include <linux/thread_info.h>
 126 ],[
 127         #if THREAD_SIZE < 8192
 128         #error "stack size < 8192"
 129         #endif
 130 ],[
 131         AC_MSG_RESULT(yes)
 132 ],[
 133         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
 134 ])
 135 ])
 136
 137 #
 138 # Allow the user to set the MDS thread upper limit
 139 #
 140 AC_DEFUN([LC_MDS_MAX_THREADS],
 141 [
 142         AC_ARG_WITH([mds_max_threads],
 143         AC_HELP_STRING([--with-mds-max-threads=size],
 144                         [define the maximum number of threads available on the MDS: (default=512)]),
 145         [
 146                 MDS_THREAD_COUNT=$with_mds_max_threads
 147                 AC_DEFINE_UNQUOTED(MDT_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of mdt threads])
 148         ])
 149 ])
 150
 151 #
 152 # LC_CONFIG_PINGER
 153 #
 154 # the pinger is temporary, until we have the recovery node in place
 155 #
 156 AC_DEFUN([LC_CONFIG_PINGER],
 157 [AC_MSG_CHECKING([whether to enable pinger support])
 158 AC_ARG_ENABLE([pinger],
 159         AC_HELP_STRING([--disable-pinger],
 160                         [disable recovery pinger support]),
 161         [],[enable_pinger='yes'])
 162 AC_MSG_RESULT([$enable_pinger])
 163 if test x$enable_pinger != xno ; then
 164   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 165 fi
 166 ])
 167
 168 #
 169 # LC_CONFIG_CHECKSUM
 170 #
 171 # do checksum of bulk data between client and OST
 172 #
 173 AC_DEFUN([LC_CONFIG_CHECKSUM],
 174 [AC_MSG_CHECKING([whether to enable data checksum support])
 175 AC_ARG_ENABLE([checksum],
 176        AC_HELP_STRING([--disable-checksum],
 177                        [disable data checksum support]),
 178        [],[enable_checksum='yes'])
 179 AC_MSG_RESULT([$enable_checksum])
 180 if test x$enable_checksum != xno ; then
 181   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 182 fi
 183 ])
 184
 185 #
 186 # LC_CONFIG_LIBLUSTRE_RECOVERY
 187 #
 188 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 189 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 190 AC_ARG_ENABLE([liblustre-recovery],
 191         AC_HELP_STRING([--disable-liblustre-recovery],
 192                         [disable liblustre recovery support]),
 193         [],[enable_liblustre_recovery='yes'])
 194 AC_MSG_RESULT([$enable_liblustre_recovery])
 195 if test x$enable_liblustre_recovery != xno ; then
 196   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 197 fi
 198 ])
 199
 200 #
 201 # LC_CONFIG_HEALTH_CHECK_WRITE
 202 #
 203 # Turn off the actual write to the disk
 204 #
 205 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 206 [AC_MSG_CHECKING([whether to enable a write with the health check])
 207 AC_ARG_ENABLE([health_write],
 208         AC_HELP_STRING([--enable-health_write],
 209                         [enable disk writes when doing health check]),
 210         [],[enable_health_write='no'])
 211 AC_MSG_RESULT([$enable_health_write])
 212 if test x$enable_health_write != xno ; then
 213   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 214 fi
 215 ])
 216
 217 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
 218 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
 219 AC_ARG_ENABLE([lru_resize],
 220         AC_HELP_STRING([--enable-lru-resize],
 221                         [enable lru resize support]),
 222         [],[enable_lru_resize='yes'])
 223 AC_MSG_RESULT([$enable_lru_resize])
 224 if test x$enable_lru_resize != xno; then
 225    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 226 fi
 227 ])
 228
 229 # whether to enable quota support(kernel modules)
 230 AC_DEFUN([LC_QUOTA_MODULE],
 231 [if test x$enable_quota != xno; then
 232     LB_LINUX_CONFIG([QUOTA],[
 233         enable_quota_module='yes'
 234         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
 235     ],[
 236         enable_quota_module='no'
 237         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
 238     ])
 239 fi
 240 ])
 241
 242 # truncate_complete_page() was exported from RHEL5/SLES10, but not in SLES11 SP0 (2.6.27)
 243 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 244 # delete_from_page_cache() is exported from 2.6.39
 245 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 246          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 247                                  [mm/truncate.c],
 248                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 249                                             [kernel export truncate_complete_page])])
 250           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
 251                                  [mm/filemap.c],
 252                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 253                                             [kernel export remove_from_page_cache])])
 254           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
 255                                  [mm/filemap.c],
 256                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 257                                             [kernel export delete_from_page_cache])])
 258          ])
 259
 260 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
 261 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
 262 [fs/dcache.c],[
 263 AC_DEFINE(HAVE_D_REHASH_COND, 1,
 264             [d_rehash_cond is exported by the kernel])
 265 ],[
 266 ])
 267 ])
 268
 269 AC_DEFUN([LC_EXPORT___D_REHASH],
 270 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
 271 [fs/dcache.c],[
 272 AC_DEFINE(HAVE___D_REHASH, 1,
 273             [__d_rehash is exported by the kernel])
 274 ],[
 275 ])
 276 ])
 277
 278 # The actual symbol exported varies among architectures, so we need
 279 # to check many symbols (but only in the current architecture.)  No
 280 # matter what symbol is exported, the kernel #defines node_to_cpumask
 281 # to the appropriate function and that's what we use.
 282 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
 283          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
 284                                  [arch/$LINUX_ARCH/mm/numa.c],
 285                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 286                                             [node_to_cpumask is exported by
 287                                              the kernel])]) # x86_64
 288           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
 289                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 290                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 291                                             [node_to_cpumask is exported by
 292                                              the kernel])]) # ia64
 293           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
 294                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 295                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 296                                             [node_to_cpumask is exported by
 297                                              the kernel])]) # i386
 298           ])
 299
 300 #
 301 #
 302 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
 303 #
 304 AC_DEFUN([LC_FILEMAP_POPULATE],
 305 [AC_MSG_CHECKING([for exported filemap_populate])
 306 LB_LINUX_TRY_COMPILE([
 307         #include <asm/page.h>
 308         #include <linux/mm.h>
 309 ],[
 310        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 311 ],[
 312         AC_MSG_RESULT([yes])
 313         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 314 ],[
 315         AC_MSG_RESULT([no])
 316 ])
 317 ])
 318
 319 #
 320 # added in 2.6.17
 321 #
 322 AC_DEFUN([LC_BIT_SPINLOCK_H],
 323 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 324         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 325         LB_LINUX_TRY_COMPILE([
 326                 #include <asm/processor.h>
 327                 #include <linux/spinlock.h>
 328                 #include <linux/bit_spinlock.h>
 329         ],[],[
 330                 AC_MSG_RESULT([yes])
 331                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 332         ],[
 333                 AC_MSG_RESULT([no])
 334         ])
 335 ],
 336 [])
 337 ])
 338
 339 #
 340 # LC_CONST_ACL_SIZE
 341 #
 342 AC_DEFUN([LC_CONST_ACL_SIZE],
 343 [AC_MSG_CHECKING([calc acl size])
 344 tmp_flags="$CFLAGS"
 345 CFLAGS="$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 -include $AUTOCONF_HDIR/autoconf.h $EXTRA_KCFLAGS"
 346 AC_TRY_RUN([
 347         #define __KERNEL__
 348         #include <linux/types.h>
 349         #undef __KERNEL__
 350         // block include
 351         #define __LINUX_POSIX_ACL_H
 352
 353         #ifdef CONFIG_FS_POSIX_ACL
 354         # include <linux/posix_acl_xattr.h>
 355         #endif
 356
 357         #include <stdio.h>
 358
 359         int main(void)
 360         {
 361                 /* LUSTRE_POSIX_ACL_MAX_ENTRIES  = 32 */
 362             int size = posix_acl_xattr_size(32);
 363             FILE *f = fopen("acl.size","w+");
 364             fprintf(f,"%d", size);
 365             fclose(f);
 366
 367             return 0;
 368         }
 369 ],[
 370         acl_size=`cat acl.size`
 371         AC_MSG_RESULT([ACL size $acl_size])
 372         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
 373 ],[
 374         AC_ERROR([ACL size can't be computed])
 375 ],[
 376         AC_MSG_RESULT([can't check ACL size, make it 260])
 377         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE,260)
 378 ])
 379 CFLAGS="$tmp_flags"
 380 ])
 381
 382 #
 383 # LC_CAPA_CRYPTO
 384 #
 385 AC_DEFUN([LC_CAPA_CRYPTO],
 386 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 387         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 388 ])
 389 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 390         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 391 ])
 392 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 393         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 394 ])
 395 ])
 396
 397 #
 398 # LC_CONFIG_RMTCLIENT
 399 #
 400 dnl FIXME
 401 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 402 dnl FIXME
 403 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 404 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 405         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 406 ])
 407 ])
 408
 409 #
 410 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 411 #
 412 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 413 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 414  AC_ARG_ENABLE([gss_keyring],
 415                [AC_HELP_STRING([--disable-gss-keyring],
 416                                [disable gss keyring backend])],
 417                [],[enable_gss_keyring='yes'])
 418  AC_MSG_RESULT([$enable_gss_keyring])
 419
 420  if test x$enable_gss_keyring != xno; then
 421         LB_LINUX_CONFIG_IM([KEYS],[],
 422                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 423
 424         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 425                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 426
 427         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 428                   [Define this if you enable gss keyring backend])
 429  fi
 430 ])
 431
 432 AC_DEFUN([LC_CONFIG_SUNRPC],
 433 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 434                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 435 ])
 436
 437 #
 438 # LC_CONFIG_GSS (default disabled)
 439 #
 440 # Build gss and related tools of Lustre. Currently both kernel and user space
 441 # parts are depend on linux platform.
 442 #
 443 AC_DEFUN([LC_CONFIG_GSS],
 444 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 445  AC_ARG_ENABLE([gss],
 446                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 447                [],[enable_gss='no'])
 448  AC_MSG_RESULT([$enable_gss])
 449
 450  if test x$enable_gss == xyes; then
 451         LC_CONFIG_GSS_KEYRING
 452         LC_CONFIG_SUNRPC
 453
 454         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 455
 456         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 457                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 458         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 459                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 460         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 461                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 462         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 463                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 464
 465         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 466                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 467                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 468                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 469                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 470
 471         AC_SUBST(GSSAPI_LIBS)
 472
 473         AC_KERBEROS_V5
 474  fi
 475 ])
 476
 477 AC_DEFUN([LC_QUOTA_READ],
 478 [AC_MSG_CHECKING([if kernel supports quota_read])
 479 LB_LINUX_TRY_COMPILE([
 480         #include <linux/fs.h>
 481 ],[
 482         struct super_operations sp;
 483         void *i = (void *)sp.quota_read;
 484 ],[
 485         AC_MSG_RESULT([yes])
 486         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
 487 ],[
 488         AC_MSG_RESULT([no])
 489 ])
 490 ])
 491
 492 #
 493 # LC_COOKIE_FOLLOW_LINK
 494 #
 495 # kernel 2.6.13+ ->follow_link returns a cookie
 496 #
 497
 498 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
 499 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
 500 LB_LINUX_TRY_COMPILE([
 501         #include <linux/fs.h>
 502         #include <linux/namei.h>
 503 ],[
 504         struct dentry dentry;
 505         struct nameidata nd;
 506
 507         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
 508 ],[
 509         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
 510         AC_MSG_RESULT([yes])
 511 ],[
 512         AC_MSG_RESULT([no])
 513 ])
 514 ])
 515
 516 #
 517 # LC_FUNC_RCU
 518 #
 519 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
 520 # call_rcu takes three parameters.
 521 #
 522 AC_DEFUN([LC_FUNC_RCU],
 523 [AC_MSG_CHECKING([if kernel have RCU supported])
 524 LB_LINUX_TRY_COMPILE([
 525         #include <linux/rcupdate.h>
 526 ],[],[
 527         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
 528         AC_MSG_RESULT([yes])
 529
 530         AC_MSG_CHECKING([if call_rcu takes three parameters])
 531         LB_LINUX_TRY_COMPILE([
 532                 #include <linux/rcupdate.h>
 533         ],[
 534                 struct rcu_head rh;
 535                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
 536         ],[
 537                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
 538                 AC_MSG_RESULT([yes])
 539         ],[
 540                 AC_MSG_RESULT([no])
 541         ])
 542
 543 ],[
 544         AC_MSG_RESULT([no])
 545 ])
 546 ])
 547
 548 AC_DEFUN([LC_PERCPU_COUNTER],
 549 [AC_MSG_CHECKING([if have struct percpu_counter defined])
 550 LB_LINUX_TRY_COMPILE([
 551         #include <linux/percpu_counter.h>
 552 ],[],[
 553         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
 554         AC_MSG_RESULT([yes])
 555
 556         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
 557         LB_LINUX_TRY_COMPILE([
 558                 #include <linux/percpu_counter.h>
 559         ],[
 560                 struct percpu_counter c;
 561                 percpu_counter_init(&c, 0);
 562         ],[
 563                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
 564                                                    arguments])
 565                 AC_MSG_RESULT([yes])
 566         ],[
 567                 AC_MSG_RESULT([no])
 568         ])
 569 ],[
 570         AC_MSG_RESULT([no])
 571 ])
 572 ])
 573
 574 AC_DEFUN([LC_TASK_CLENV_STORE],
 575 [
 576         AC_MSG_CHECKING([if we can store cl_env in task_struct])
 577         if test x$have_task_clenv_store != xyes ; then
 578                 LC_TASK_CLENV_TUX_INFO
 579         fi
 580 ])
 581
 582 # ~2.6.11
 583
 584 AC_DEFUN([LC_S_TIME_GRAN],
 585 [AC_MSG_CHECKING([if super block has s_time_gran member])
 586 LB_LINUX_TRY_COMPILE([
 587         #include <linux/fs.h>
 588 ],[
 589         struct super_block sb;
 590
 591         return sb.s_time_gran;
 592 ],[
 593         AC_MSG_RESULT([yes])
 594         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
 595 ],[
 596         AC_MSG_RESULT([no])
 597 ])
 598 ])
 599
 600 AC_DEFUN([LC_SB_TIME_GRAN],
 601 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
 602 LB_LINUX_TRY_COMPILE([
 603         #include <linux/fs.h>
 604 ],[
 605         return get_sb_time_gran(NULL);
 606 ],[
 607         AC_MSG_RESULT([yes])
 608         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
 609 ],[
 610         AC_MSG_RESULT([no])
 611 ])
 612 ])
 613
 614 # 2.6.12
 615
 616 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
 617 AC_DEFUN([LC_RW_TREE_LOCK],
 618 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
 619 tmp_flags="$EXTRA_KCFLAGS"
 620 EXTRA_KCFLAGS="-Werror"
 621 LB_LINUX_TRY_COMPILE([
 622         #include <linux/fs.h>
 623 ],[
 624         struct address_space a;
 625
 626         write_lock(&a.tree_lock);
 627 ],[
 628         AC_MSG_RESULT([yes])
 629         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
 630 ],[
 631         AC_MSG_RESULT([no])
 632 ])
 633 EXTRA_KCFLAGS="$tmp_flags"
 634 ])
 635
 636 # 2.6.15
 637
 638 # LC_INODE_I_MUTEX
 639 # after 2.6.15 inode have i_mutex intead of i_sem
 640 AC_DEFUN([LC_INODE_I_MUTEX],
 641 [AC_MSG_CHECKING([if inode has i_mutex ])
 642 LB_LINUX_TRY_COMPILE([
 643         #include <linux/mutex.h>
 644         #include <linux/fs.h>
 645         #undef i_mutex
 646 ],[
 647         struct inode i;
 648
 649         mutex_unlock(&i.i_mutex);
 650 ],[
 651         AC_MSG_RESULT(yes)
 652         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 653                 [after 2.6.15 inode have i_mutex intead of i_sem])
 654 ],[
 655         AC_MSG_RESULT(no)
 656 ])
 657 ])
 658
 659 # 2.6.16
 660
 661 # LC_SECURITY_PLUG  # for SLES10 SP2
 662 # check security plug in sles10 sp2 kernel
 663 AC_DEFUN([LC_SECURITY_PLUG],
 664 [AC_MSG_CHECKING([If kernel has security plug support])
 665 LB_LINUX_TRY_COMPILE([
 666         #include <linux/fs.h>
 667 ],[
 668         struct dentry   *dentry;
 669         struct vfsmount *mnt;
 670         struct iattr    *iattr;
 671
 672         notify_change(dentry, mnt, iattr);
 673 ],[
 674         AC_MSG_RESULT(yes)
 675         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
 676                 [SLES10 SP2 use extra parameter in vfs])
 677 ],[
 678         AC_MSG_RESULT(no)
 679 ])
 680 ])
 681
 682 # 2.6.17
 683
 684 # inode have i_private field since 2.6.17
 685 AC_DEFUN([LC_INODE_IPRIVATE],
 686 [AC_MSG_CHECKING([if inode has a i_private field])
 687 LB_LINUX_TRY_COMPILE([
 688 #include <linux/fs.h>
 689 ],[
 690         struct inode i;
 691         i.i_private = NULL;
 692 ],[
 693         AC_MSG_RESULT(yes)
 694         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
 695                 [struct inode has i_private field])
 696 ],[
 697         AC_MSG_RESULT(no)
 698 ])
 699 ])
 700
 701 # LC_DQUOTOFF_MUTEX
 702 # after 2.6.17 dquote use mutex instead if semaphore
 703 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 704 [AC_MSG_CHECKING([use dqonoff_mutex])
 705 LB_LINUX_TRY_COMPILE([
 706         #include <linux/mutex.h>
 707         #include <linux/fs.h>
 708         #include <linux/quota.h>
 709 ],[
 710         struct quota_info dq;
 711
 712         mutex_unlock(&dq.dqonoff_mutex);
 713 ],[
 714         AC_MSG_RESULT(yes)
 715         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 716                 [after 2.6.17 dquote use mutex instead if semaphore])
 717 ],[
 718         AC_MSG_RESULT(no)
 719 ])
 720 ])
 721
 722 # 2.6.18
 723
 724 # LC_NR_PAGECACHE
 725 # 2.6.18 don't export nr_pagecahe
 726 AC_DEFUN([LC_NR_PAGECACHE],
 727 [AC_MSG_CHECKING([kernel export nr_pagecache])
 728 LB_LINUX_TRY_COMPILE([
 729         #include <linux/pagemap.h>
 730 ],[
 731         return atomic_read(&nr_pagecache);
 732 ],[
 733         AC_MSG_RESULT(yes)
 734         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 735                 [is kernel export nr_pagecache])
 736 ],[
 737         AC_MSG_RESULT(no)
 738 ])
 739 ])
 740
 741 #
 742 # LC_STATFS_DENTRY_PARAM
 743 # starting from 2.6.18 linux kernel uses dentry instead of super_block
 744 # for the first parameter of the super_operations->statfs() callback.
 745 #
 746 #
 747 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 748 [AC_MSG_CHECKING([if super_ops.statfs() first parameter is dentry])
 749 tmp_flags="$EXTRA_KCFLAGS"
 750 EXTRA_KCFLAGS="-Werror"
 751 LB_LINUX_TRY_COMPILE([
 752         #include <linux/fs.h>
 753 ],[
 754         ((struct super_operations *)0)->statfs((struct dentry *)0, (struct kstatfs*)0);
 755 ],[
 756         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 757                   [super_ops.statfs() first parameter is dentry])
 758         AC_MSG_RESULT([yes])
 759 ],[
 760         AC_MSG_RESULT([no])
 761 ])
 762 EXTRA_KCFLAGS="$tmp_flags"
 763 ])
 764
 765 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 766 # 2.6.18~2.6.25 umount_begin has different parameters
 767 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 768 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 769 tmp_flags="$EXTRA_KCFLAGS"
 770 EXTRA_KCFLAGS="-Werror"
 771 LB_LINUX_TRY_COMPILE([
 772         #include <linux/fs.h>
 773
 774         struct vfsmount;
 775         static void cfg_umount_begin (struct vfsmount *v, int flags)
 776         {
 777                 ;
 778         }
 779
 780         static struct super_operations cfg_super_operations = {
 781                 .umount_begin   = cfg_umount_begin,
 782         };
 783 ],[
 784         cfg_super_operations.umount_begin(NULL,0);
 785 ],[
 786         AC_MSG_RESULT(yes)
 787         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
 788                 [Define umount_begin need second argument])
 789 ],[
 790         AC_MSG_RESULT(no)
 791 ])
 792 EXTRA_KCFLAGS="$tmp_flags"
 793 ])
 794
 795 # LC_FLUSH_OWNER_ID
 796 # starting from 2.6.18 the file_operations .flush
 797 # method has a new "fl_owner_t id" parameter
 798 #
 799 AC_DEFUN([LC_FLUSH_OWNER_ID],
 800 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
 801 LB_LINUX_TRY_COMPILE([
 802         #include <linux/fs.h>
 803 ],[
 804         struct file_operations *fops = NULL;
 805         fl_owner_t id;
 806         int i;
 807
 808         i = fops->flush(NULL, id);
 809 ],[
 810         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
 811                 [file_operations .flush method has an fl_owner_t id])
 812         AC_MSG_RESULT([yes])
 813 ],[
 814         AC_MSG_RESULT([no])
 815 ])
 816 ])
 817
 818 #
 819 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
 820 #
 821 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
 822 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
 823 #
 824 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
 825     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
 826          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
 827                         [exported invalidate_mapping_pages])],
 828     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
 829          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
 830                         [exported invalidate_inode_pages])], [
 831        AC_MSG_ERROR([no way to invalidate pages])
 832   ])
 833     ],[])
 834 ])
 835
 836 #2.6.18 + RHEL5 (fc6)
 837
 838 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
 839 AC_DEFUN([LC_PG_FS_MISC],
 840 [AC_MSG_CHECKING([kernel has PG_fs_misc])
 841 LB_LINUX_TRY_COMPILE([
 842         #include <linux/mm.h>
 843         #include <linux/page-flags.h>
 844 ],[
 845         #ifndef PG_fs_misc
 846         #error PG_fs_misc not defined in kernel
 847         #endif
 848 ],[
 849         AC_MSG_RESULT(yes)
 850         AC_DEFINE(HAVE_PG_FS_MISC, 1,
 851                   [is kernel have PG_fs_misc])
 852 ],[
 853         AC_MSG_RESULT(no)
 854 ])
 855 ])
 856
 857 # RHEL5 PageChecked and SetPageChecked defined
 858 AC_DEFUN([LC_PAGE_CHECKED],
 859 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
 860 LB_LINUX_TRY_COMPILE([
 861         #include <linux/mm.h>
 862 #ifdef HAVE_LINUX_MMTYPES_H
 863         #include <linux/mm_types.h>
 864 #endif
 865         #include <linux/page-flags.h>
 866 ],[
 867         struct page *p = NULL;
 868
 869         /* before 2.6.26 this define*/
 870         #ifndef PageChecked
 871         /* 2.6.26 use function instead of define for it */
 872         SetPageChecked(p);
 873         PageChecked(p);
 874         #endif
 875 ],[
 876         AC_MSG_RESULT(yes)
 877         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
 878                   [does kernel have PageChecked and SetPageChecked])
 879 ],[
 880         AC_MSG_RESULT(no)
 881 ])
 882 ])
 883
 884 #
 885 # LC_LINUX_FIEMAP_H
 886 #
 887 # If we have fiemap.h
 888 # after 2.6.27 use fiemap.h in include/linux
 889 #
 890 AC_DEFUN([LC_LINUX_FIEMAP_H],
 891 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
 892         AC_MSG_CHECKING([if fiemap.h can be compiled])
 893         LB_LINUX_TRY_COMPILE([
 894                 #include <linux/types.h>
 895                 #include <linux/fiemap.h>
 896         ],[],[
 897                 AC_MSG_RESULT([yes])
 898                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
 899         ],[
 900                 AC_MSG_RESULT([no])
 901         ])
 902 ],
 903 [])
 904 ])
 905
 906 # 2.6.19
 907
 908 # 2.6.19 API changes
 909 # inode don't have i_blksize field
 910 AC_DEFUN([LC_INODE_BLKSIZE],
 911 [AC_MSG_CHECKING([inode has i_blksize field])
 912 LB_LINUX_TRY_COMPILE([
 913 #include <linux/fs.h>
 914 ],[
 915         struct inode i;
 916         i.i_blksize = 0;
 917 ],[
 918         AC_MSG_RESULT(yes)
 919         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
 920                 [struct inode has i_blksize field])
 921 ],[
 922         AC_MSG_RESULT(no)
 923 ])
 924 ])
 925
 926 # LC_FILE_WRITEV
 927 # 2.6.19 replaced writev with aio_write
 928 AC_DEFUN([LC_FILE_WRITEV],
 929 [AC_MSG_CHECKING([writev in fops])
 930 LB_LINUX_TRY_COMPILE([
 931         #include <linux/fs.h>
 932 ],[
 933         struct file_operations *fops = NULL;
 934         fops->writev = NULL;
 935 ],[
 936         AC_MSG_RESULT(yes)
 937         AC_DEFINE(HAVE_FILE_WRITEV, 1,
 938                 [use fops->writev])
 939 ],[
 940         AC_MSG_RESULT(no)
 941 ])
 942 ])
 943
 944 # LC_FILE_READV
 945 # 2.6.19 replaced readv with aio_read
 946 AC_DEFUN([LC_FILE_READV],
 947 [AC_MSG_CHECKING([readv in fops])
 948 LB_LINUX_TRY_COMPILE([
 949         #include <linux/fs.h>
 950 ],[
 951         struct file_operations *fops = NULL;
 952         fops->readv = NULL;
 953 ],[
 954         AC_MSG_RESULT(yes)
 955         AC_DEFINE(HAVE_FILE_READV, 1,
 956                 [use fops->readv])
 957 ],[
 958         AC_MSG_RESULT(no)
 959 ])
 960 ])
 961
 962 # 2.6.20
 963
 964 # LC_CANCEL_DIRTY_PAGE
 965 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
 966 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
 967         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
 968         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
 969         # backport is broken, so ignore it
 970         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
 971            test "$(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
 972                 AC_MSG_RESULT(no)
 973         else
 974                 LB_LINUX_TRY_COMPILE([
 975                         #include <linux/mm.h>
 976                         #include <linux/page-flags.h>
 977 ],[
 978                         cancel_dirty_page(NULL, 0);
 979 ],[
 980                         AC_MSG_RESULT(yes)
 981                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
 982                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
 983 ],[
 984                         AC_MSG_RESULT(no)
 985 ])
 986         fi
 987 ])
 988
 989 # raid5-zerocopy patch
 990
 991 #
 992 # LC_PAGE_CONSTANT
 993 #
 994 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
 995 # it support constant page, which means the page won't be modified during the
 996 # IO.
 997 #
 998 AC_DEFUN([LC_PAGE_CONSTANT],
 999 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1000 LB_LINUX_TRY_COMPILE([
1001         #include <linux/mm.h>
1002         #include <linux/page-flags.h>
1003 ],[
1004         #ifndef PG_constant
1005         #error "Have no raid5 zcopy patch"
1006         #endif
1007 ],[
1008         AC_MSG_RESULT(yes)
1009         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1010 ],[
1011         AC_MSG_RESULT(no);
1012 ])
1013 ])
1014
1015 # 2.6.22
1016
1017 # 2.6.22 lost second parameter for invalidate_bdev
1018 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1019 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1020 LB_LINUX_TRY_COMPILE([
1021         #include <linux/buffer_head.h>
1022 ],[
1023         invalidate_bdev(NULL,0);
1024 ],[
1025         AC_MSG_RESULT([yes])
1026         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1027                 [invalidate_bdev has second argument])
1028 ],[
1029         AC_MSG_RESULT([no])
1030 ])
1031 ])
1032
1033 #
1034 # check for crypto API
1035 #
1036 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1037 [AC_MSG_CHECKING([if kernel has block cipher support])
1038 LB_LINUX_TRY_COMPILE([
1039         #include <linux/err.h>
1040         #include <linux/crypto.h>
1041 ],[
1042         struct crypto_blkcipher *tfm;
1043         tfm = crypto_alloc_blkcipher("aes", 0, sizeof(tfm) );
1044 ],[
1045         AC_MSG_RESULT([yes])
1046         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1047 ],[
1048         AC_MSG_RESULT([no])
1049 ])
1050 ])
1051
1052 #
1053 # check for struct hash_desc
1054 #
1055 AC_DEFUN([LC_STRUCT_HASH_DESC],
1056 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1057 LB_LINUX_TRY_COMPILE([
1058         #include <linux/err.h>
1059         #include <linux/crypto.h>
1060 ],[
1061         struct hash_desc foo;
1062 ],[
1063         AC_MSG_RESULT([yes])
1064         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1065 ],[
1066         AC_MSG_RESULT([no])
1067 ])
1068 ])
1069
1070 #
1071 # check for struct blkcipher_desc
1072 #
1073 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1074 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1075 LB_LINUX_TRY_COMPILE([
1076         #include <linux/err.h>
1077         #include <linux/crypto.h>
1078 ],[
1079         struct blkcipher_desc foo;
1080 ],[
1081         AC_MSG_RESULT([yes])
1082         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1083 ],[
1084         AC_MSG_RESULT([no])
1085 ])
1086 ])
1087
1088 #
1089 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1090 #
1091 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1092 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1093 LB_LINUX_TRY_COMPILE([
1094         #include <linux/fs.h>
1095 ],[
1096         int v = FS_RENAME_DOES_D_MOVE;
1097 ],[
1098         AC_MSG_RESULT([yes])
1099         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1100 ],[
1101         AC_MSG_RESULT([no])
1102 ])
1103 ])
1104
1105 # 2.6.23
1106
1107 # 2.6.23 have return type 'void' for unregister_blkdev
1108 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1109 [AC_MSG_CHECKING([if unregister_blkdev return int])
1110 LB_LINUX_TRY_COMPILE([
1111         #include <linux/fs.h>
1112 ],[
1113         int i = unregister_blkdev(0,NULL);
1114 ],[
1115         AC_MSG_RESULT([yes])
1116         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1117                 [unregister_blkdev return int])
1118 ],[
1119         AC_MSG_RESULT([no])
1120 ])
1121 ])
1122
1123 # 2.6.23 change .sendfile to .splice_read
1124 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1125 [AC_MSG_CHECKING([if kernel has .splice_read])
1126 LB_LINUX_TRY_COMPILE([
1127         #include <linux/fs.h>
1128 ],[
1129         struct file_operations file;
1130
1131         file.splice_read = NULL;
1132 ], [
1133         AC_MSG_RESULT([yes])
1134         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1135                 [kernel has .slice_read])
1136 ],[
1137         AC_MSG_RESULT([no])
1138 ])
1139 ])
1140
1141 # 2.6.23 change .sendfile to .splice_read
1142 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1143 AC_DEFUN([LC_KERNEL_SENDFILE],
1144 [AC_MSG_CHECKING([if kernel has .sendfile])
1145 LB_LINUX_TRY_COMPILE([
1146         #include <linux/fs.h>
1147 ],[
1148         struct file_operations file;
1149
1150         file.sendfile = NULL;
1151 ], [
1152         AC_MSG_RESULT([yes])
1153         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1154                 [kernel has .sendfile])
1155 ],[
1156         AC_MSG_RESULT([no])
1157 ])
1158 ])
1159
1160 # 2.6.23 extract nfs export related data into exportfs.h
1161 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1162 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1163         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1164                 [kernel has include/exportfs.h])
1165 ],[
1166         AC_MSG_RESULT([no])
1167 ])
1168 ])
1169
1170 # 2.6.23 has new page fault handling API
1171 AC_DEFUN([LC_VM_OP_FAULT],
1172 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1173 LB_LINUX_TRY_COMPILE([
1174         #include <linux/mm.h>
1175 ],[
1176         struct vm_operations_struct op;
1177
1178         op.fault = NULL;
1179 ], [
1180         AC_MSG_RESULT([yes])
1181         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1182                 [kernel has .fault in vm_operation_struct])
1183 ],[
1184         AC_MSG_RESULT([no])
1185 ])
1186 ])
1187
1188 # 2.6.23 add code to wait other users to complete before removing procfs entry
1189 AC_DEFUN([LC_PROCFS_USERS],
1190 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1191 LB_LINUX_TRY_COMPILE([
1192         #include <linux/proc_fs.h>
1193 ],[
1194         struct proc_dir_entry pde;
1195
1196         pde.pde_users   = 0;
1197 ],[
1198         AC_MSG_RESULT([yes])
1199         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1200                 [kernel has pde_users member in procfs entry struct])
1201 ],[
1202         AC_MSG_RESULT([no])
1203 ])
1204 ])
1205
1206 # 2.6.23 exports exportfs_decode_fh
1207 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1208 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1209 [fs/exportfs/expfs.c],[
1210         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1211                 [exportfs_decode_fh has been export])
1212 ],[
1213 ])
1214 ])
1215
1216 # 2.6.24
1217
1218 # 2.6.24 need linux/mm_types.h included
1219 AC_DEFUN([LC_HAVE_MMTYPES_H],
1220 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1221         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1222                 [kernel has include/mm_types.h])
1223 ],[
1224         AC_MSG_RESULT([no])
1225 ])
1226 ])
1227
1228 # 2.6.24 has bio_endio with 2 args
1229 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1230 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1231 LB_LINUX_TRY_COMPILE([
1232         #include <linux/bio.h>
1233 ],[
1234         bio_endio(NULL, 0);
1235 ], [
1236         AC_MSG_RESULT([yes])
1237         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1238                 [kernel has bio_endio with 2 args])
1239 ],[
1240         AC_MSG_RESULT([no])
1241 ])
1242 ])
1243
1244 # 2.6.24 has new members in exports struct.
1245 AC_DEFUN([LC_FH_TO_DENTRY],
1246 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1247 LB_LINUX_TRY_COMPILE([
1248         #include <linux/fs.h>
1249 #ifdef HAVE_LINUX_EXPORTFS_H
1250         #include <linux/exportfs.h>
1251 #endif
1252 ],[
1253         do{ }while(sizeof(((struct export_operations *)0)->fh_to_dentry));
1254 ], [
1255         AC_MSG_RESULT([yes])
1256         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1257                 [kernel has .fh_to_dentry member in export_operations struct])
1258 ],[
1259         AC_MSG_RESULT([no])
1260 ])
1261 ])
1262
1263 # 2.6.24 removes long aged procfs entry -> deleted member
1264 AC_DEFUN([LC_PROCFS_DELETED],
1265 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1266 LB_LINUX_TRY_COMPILE([
1267         #include <linux/proc_fs.h>
1268 ],[
1269         struct proc_dir_entry pde;
1270
1271         pde.deleted = sizeof(pde);
1272 ], [
1273         AC_MSG_RESULT([yes])
1274         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1275                 [kernel has deleted member in procfs entry struct])
1276 ],[
1277         AC_MSG_RESULT([no])
1278 ])
1279 ])
1280
1281 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1282 AC_DEFUN([LC_EXPORT_BDI_INIT],
1283 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1284 [mm/backing-dev.c],[
1285         AC_DEFINE(HAVE_BDI_INIT, 1,
1286                 [bdi_init/bdi_destroy functions are present])
1287 ],[
1288 ])
1289 ])
1290
1291 # 2.6.26
1292
1293 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1294 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1295 [AC_MSG_CHECKING([fs_struct use path structure])
1296 LB_LINUX_TRY_COMPILE([
1297         #include <asm/atomic.h>
1298         #include <linux/spinlock.h>
1299         #include <linux/fs_struct.h>
1300 ],[
1301         struct fs_struct fs;
1302
1303         fs.pwd = *((struct path *)sizeof(fs));
1304 ], [
1305         AC_MSG_RESULT([yes])
1306         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1307                 [fs_struct use path structure])
1308 ],[
1309         AC_MSG_RESULT([no])
1310 ])
1311 ])
1312
1313
1314 #
1315 # 2.6.27
1316 #
1317 AC_DEFUN([LC_PGMKWRITE_USE_VMFAULT],
1318 [AC_MSG_CHECKING([kernel .page_mkwrite uses struct vm_fault *])
1319 tmp_flags="$EXTRA_KCFLAGS"
1320 EXTRA_KCFLAGS="-Werror"
1321 LB_LINUX_TRY_COMPILE([
1322         #include <linux/mm.h>
1323 ],[
1324         ((struct vm_operations_struct *)0)->page_mkwrite((struct vm_area_struct *)0, (struct vm_fault *)0);
1325 ], [
1326         AC_MSG_RESULT([yes])
1327         AC_DEFINE(HAVE_PGMKWRITE_USE_VMFAULT, 1,
1328                 [kernel vm_operation_struct.page_mkwrite uses struct vm_fault * as second parameter])
1329 ],[
1330         AC_MSG_RESULT([no])
1331 ])
1332 EXTRA_KCFLAGS="$tmp_flags"
1333 ])
1334
1335 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1336 [AC_MSG_CHECKING([inode_operations->permission has two args])
1337 LB_LINUX_TRY_COMPILE([
1338         #include <linux/fs.h>
1339 ],[
1340         struct inode *inode;
1341         inode->i_op->permission(NULL, 0);
1342 ],[
1343         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1344                   [inode_operations->permission has two args])
1345         AC_MSG_RESULT([yes])
1346 ],[
1347         AC_MSG_RESULT([no])
1348 ])
1349 ])
1350
1351 # 2.6.27 has file_remove_suid instead of remove_suid
1352 AC_DEFUN([LC_FILE_REMOVE_SUID],
1353 [AC_MSG_CHECKING([kernel has file_remove_suid])
1354 LB_LINUX_TRY_COMPILE([
1355         #include <linux/fs.h>
1356 ],[
1357         file_remove_suid(NULL);
1358 ],[
1359         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1360                   [kernel have file_remove_suid])
1361         AC_MSG_RESULT([yes])
1362 ],[
1363         AC_MSG_RESULT([no])
1364 ])
1365 ])
1366
1367 # 2.6.27 have new page locking API
1368 AC_DEFUN([LC_TRYLOCKPAGE],
1369 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1370 LB_LINUX_TRY_COMPILE([
1371         #include <linux/pagemap.h>
1372 ],[
1373         trylock_page(NULL);
1374 ],[
1375         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1376                   [kernel uses trylock_page for page lock])
1377         AC_MSG_RESULT([yes])
1378 ],[
1379         AC_MSG_RESULT([no])
1380 ])
1381 ])
1382
1383 # 2.6.27 removed the read_inode from super_operations.
1384 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1385 [AC_MSG_CHECKING([super_operations has a read_inode field])
1386 LB_LINUX_TRY_COMPILE([
1387         #include <linux/fs.h>
1388 ],[
1389         struct super_operations *sop;
1390         sop->read_inode(NULL);
1391 ],[
1392         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1393                 [super_operations has a read_inode])
1394         AC_MSG_RESULT([yes])
1395 ],[
1396         AC_MSG_RESULT([no])
1397 ])
1398 ])
1399
1400 # 2.6.27 has inode_permission instead of permisson
1401 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1402 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1403 [fs/namei.c],[
1404 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1405             [inode_permission is exported by the kernel])
1406 ],[
1407 ])
1408 ])
1409
1410 # 2.6.27 use 5th parameter in quota_on for remount.
1411 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1412 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1413 LB_LINUX_TRY_COMPILE([
1414         #include <linux/quota.h>
1415 ],[
1416         struct quotactl_ops *qop;
1417         qop->quota_on(NULL, 0, 0, NULL, 0);
1418 ],[
1419         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1420                 [quota_on needs 5 paramters])
1421         AC_MSG_RESULT([yes])
1422 ],[
1423         AC_MSG_RESULT([no])
1424 ])
1425 ])
1426
1427 # 2.6.27 use 3th parameter in quota_off for remount.
1428 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1429 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1430 LB_LINUX_TRY_COMPILE([
1431         #include <linux/quota.h>
1432 ],[
1433         struct quotactl_ops *qop;
1434         qop->quota_off(NULL, 0, 0);
1435 ],[
1436         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1437                 [quota_off needs 3 paramters])
1438         AC_MSG_RESULT([yes])
1439 ],[
1440         AC_MSG_RESULT([no])
1441 ])
1442 ])
1443
1444 # 2.6.27 has vfs_dq_off inline function.
1445 AC_DEFUN([LC_VFS_DQ_OFF],
1446 [AC_MSG_CHECKING([vfs_dq_off is defined])
1447 LB_LINUX_TRY_COMPILE([
1448         #include <linux/quotaops.h>
1449 ],[
1450         vfs_dq_off(NULL, 0);
1451 ],[
1452         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1453         AC_MSG_RESULT([yes])
1454 ],[
1455         AC_MSG_RESULT([no])
1456 ])
1457 ])
1458
1459 # LC_LOCK_MAP_ACQUIRE
1460 # after 2.6.27 lock_map_acquire replaces lock_acquire
1461 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1462 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1463 LB_LINUX_TRY_COMPILE([
1464         #include <linux/lockdep.h>
1465 ],[
1466         lock_map_acquire(NULL);
1467 ],[
1468         AC_MSG_RESULT(yes)
1469         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1470                 [lock_map_acquire is defined])
1471 ],[
1472         AC_MSG_RESULT(no)
1473 ])
1474 ])
1475
1476 # 2.6.27.15-2 sles11
1477
1478 # 2.6.27 sles11 remove the bi_hw_segments
1479 AC_DEFUN([LC_BI_HW_SEGMENTS],
1480 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1481 LB_LINUX_TRY_COMPILE([
1482         #include <linux/bio.h>
1483 ],[
1484         struct bio io;
1485         io.bi_hw_segments = sizeof(io);
1486 ],[
1487         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1488                 [struct bio has a bi_hw_segments field])
1489         AC_MSG_RESULT([yes])
1490 ],[
1491         AC_MSG_RESULT([no])
1492 ])
1493 ])
1494
1495 #
1496 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1497 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1498 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1499 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1500         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1501                 [kernel has include/linux/quotaio_v2.h])
1502 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1503                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1504                 [kernel has fs/quotaio_v1.h])
1505 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1506                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1507                 [kernel has fs/quota/quotaio_v2.h])
1508 ],[
1509         AC_MSG_RESULT([no])
1510 ])
1511 ])
1512 ])
1513 ])
1514
1515 # 2.6.27 sles11 has sb_any_quota_active
1516 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1517 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1518 LB_LINUX_TRY_COMPILE([
1519         #include <linux/quotaops.h>
1520 ],[
1521         sb_any_quota_active(NULL);
1522 ],[
1523         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1524                 [Kernel has a sb_any_quota_active])
1525         AC_MSG_RESULT([yes])
1526 ],[
1527         AC_MSG_RESULT([no])
1528 ])
1529 ])
1530
1531 # 2.6.27 sles11 has sb_has_quota_active
1532 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1533 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1534 LB_LINUX_TRY_COMPILE([
1535         #include <linux/quotaops.h>
1536 ],[
1537         sb_has_quota_active(NULL, 0);
1538 ],[
1539         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1540                 [Kernel has a sb_has_quota_active])
1541         AC_MSG_RESULT([yes])
1542 ],[
1543         AC_MSG_RESULT([no])
1544 ])
1545 ])
1546
1547 # 2.6.27 exported add_to_page_cache_lru.
1548 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1549 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1550 [mm/filemap.c],[
1551         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1552                 [add_to_page_cache_lru functions are present])
1553 ],[
1554 ])
1555 ])
1556
1557 #
1558 # 2.6.29 introduce sb_any_quota_loaded.
1559 #
1560 AC_DEFUN([LC_SB_ANY_QUOTA_LOADED],
1561 [AC_MSG_CHECKING([Kernel has sb_any_quota_loaded])
1562 LB_LINUX_TRY_COMPILE([
1563         #include <linux/quotaops.h>
1564 ],[
1565         sb_any_quota_loaded(NULL);
1566 ],[
1567         AC_DEFINE(HAVE_SB_ANY_QUOTA_LOADED, 1,
1568                 [Kernel has a sb_any_quota_loaded])
1569         AC_MSG_RESULT([yes])
1570 ],[
1571         AC_MSG_RESULT([no])
1572 ])
1573 ])
1574
1575 # 2.6.30 x86 node_to_cpumask has been removed. must use cpumask_of_node
1576 AC_DEFUN([LC_EXPORT_CPUMASK_OF_NODE],
1577          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask_map],
1578                                  [arch/$LINUX_ARCH/mm/numa.c],
1579                                  [AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1,
1580                                             [node_to_cpumask_map is exported by
1581                                              the kernel])]) # x86_64
1582          ])
1583
1584 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1585 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1586 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1587 LB_LINUX_TRY_COMPILE([
1588         #include <linux/blkdev.h>
1589 ],[
1590         blk_queue_logical_block_size(NULL, 0);
1591 ],[
1592         AC_MSG_RESULT(yes)
1593         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1594                   [blk_queue_logical_block_size is defined])
1595 ],[
1596         AC_MSG_RESULT(no)
1597 ])
1598 ])
1599
1600 # 2.6.32
1601
1602 # 2.6.32 changes cache_detail's member cache_request to cache_upcall
1603 # in kernel commit bc74b4f5e63a09fb78e245794a0de1e5a2716bbe
1604 AC_DEFUN([LC_CACHE_UPCALL],
1605 [AC_MSG_CHECKING([if cache_detail has cache_upcall field])
1606         LB_LINUX_TRY_COMPILE([
1607                 #include <linux/sunrpc/cache.h>
1608         ],[
1609                 struct cache_detail cd;
1610                 cd.cache_upcall = NULL;
1611         ],[
1612                 AC_MSG_RESULT(yes)
1613                 AC_DEFINE(HAVE_CACHE_UPCALL, 1,
1614                           [cache_detail has cache_upcall field])
1615         ],[
1616                 AC_MSG_RESULT(no)
1617         ])
1618 ])
1619
1620 # 2.6.32 add a limits member in struct request_queue.
1621 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1622 [AC_MSG_CHECKING([if request_queue has a limits field])
1623 LB_LINUX_TRY_COMPILE([
1624         #include <linux/blkdev.h>
1625 ],[
1626         struct request_queue rq;
1627         rq.limits.io_min = 0;
1628 ],[
1629         AC_MSG_RESULT(yes)
1630         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1631                   [request_queue has a limits field])
1632 ],[
1633         AC_MSG_RESULT(no)
1634 ])
1635 ])
1636
1637 # 2.6.32 has bdi_register() functions.
1638 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1639 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1640 [mm/backing-dev.c],[
1641         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1642                 [bdi_register function is present])
1643 ],[
1644 ])
1645 ])
1646
1647 # 2.6.32 add s_bdi for super block
1648 AC_DEFUN([LC_SB_BDI],
1649 [AC_MSG_CHECKING([if super_block has s_bdi field])
1650 LB_LINUX_TRY_COMPILE([
1651         #include <linux/fs.h>
1652 ],[
1653         struct super_block sb;
1654         sb.s_bdi = NULL;
1655 ],[
1656         AC_MSG_RESULT(yes)
1657         AC_DEFINE(HAVE_SB_BDI, 1,
1658                   [super_block has s_bdi field])
1659 ],[
1660         AC_MSG_RESULT(no)
1661 ])
1662 ])
1663
1664 #  2.6.27.15-2 SuSE 11 sp0 kernels lack the name field for BDI
1665 AC_DEFUN([LC_BDI_NAME],
1666 [AC_MSG_CHECKING([if backing_device_info has name field])
1667 LB_LINUX_TRY_COMPILE([
1668         #include <linux/blkkdev.h>
1669 ],[
1670         struct backing_dev_info bdi;
1671         bdi.name = NULL;
1672 ],[
1673         AC_MSG_RESULT(yes)
1674         AC_DEFINE(HAVE_BDI_NAME, 1,
1675                   [backing_device_info has name field])
1676 ],[
1677         AC_MSG_RESULT(no)
1678 ])
1679 ])
1680
1681 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1682 # check blk_queue_max_sectors and use it until disappear.
1683 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
1684 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
1685 LB_LINUX_TRY_COMPILE([
1686         #include <linux/blkdev.h>
1687 ],[
1688         blk_queue_max_sectors(NULL, 0);
1689 ],[
1690         AC_MSG_RESULT(yes)
1691         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
1692                   [blk_queue_max_sectors is defined])
1693 ],[
1694         AC_MSG_RESULT(no)
1695 ])
1696 ])
1697
1698 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
1699 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
1700 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
1701 LB_LINUX_TRY_COMPILE([
1702         #include <linux/blkdev.h>
1703 ],[
1704         blk_queue_max_segments(NULL, 0);
1705 ],[
1706         AC_MSG_RESULT(yes)
1707         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
1708                   [blk_queue_max_segments is defined])
1709 ],[
1710         AC_MSG_RESULT(no)
1711 ])
1712 ])
1713
1714 #
1715 # LC_QUOTA64
1716 #
1717 # Check if kernel has been patched for 64-bit quota limits support.
1718 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
1719 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
1720 # that in the absence of quotaio_v1.h in the kernel headers.
1721 #
1722 AC_DEFUN([LC_QUOTA64],[
1723         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
1724 tmp_flags="$EXTRA_KCFLAGS"
1725 EXTRA_KCFLAGS="-I$LINUX/fs"
1726         LB_LINUX_TRY_COMPILE([
1727                 #include <linux/kernel.h>
1728                 #include <linux/fs.h>
1729                 #ifdef HAVE_QUOTAIO_H
1730                 # include <linux/quotaio_v2.h>
1731                 int versions[] = V2_INITQVERSIONS_R1;
1732                 struct v2_disk_dqblk_r1 dqblk_r1;
1733                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
1734                 # include <quota/quotaio_v2.h>
1735                 struct v2r1_disk_dqblk dqblk_r1;
1736                 #elif defined(HAVE_FS_QUOTAIO_H)
1737                 # include <quotaio_v2.h>
1738                 struct v2r1_disk_dqblk dqblk_r1;
1739                 #else
1740                 #include <linux/quota.h>
1741                 int ver = QFMT_VFS_V1;
1742                 #endif
1743         ],[],[
1744                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
1745                 AC_MSG_RESULT([yes])
1746         ],[
1747                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
1748                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
1749                 ],[])
1750                 AC_MSG_RESULT([no])
1751         ])
1752 EXTRA_KCFLAGS=$tmp_flags
1753 ])
1754
1755 # 2.6.32 set_cpus_allowed is no more defined if CONFIG_CPUMASK_OFFSTACK=yes
1756 AC_DEFUN([LC_SET_CPUS_ALLOWED],
1757          [AC_MSG_CHECKING([if kernel defines set_cpus_allowed])
1758           LB_LINUX_TRY_COMPILE(
1759                 [#include <linux/sched.h>],
1760                 [struct task_struct *p = NULL;
1761                  cpumask_t mask = { { 0 } };
1762                  (void) set_cpus_allowed(p, mask);],
1763                 [AC_MSG_RESULT([yes])
1764                  AC_DEFINE(HAVE_SET_CPUS_ALLOWED, 1,
1765                            [set_cpus_allowed is exported by the kernel])],
1766                 [AC_MSG_RESULT([no])] )])
1767
1768 # 2.6.32 introduces selinux_is_enabled()
1769 AC_DEFUN([LC_SELINUX_IS_ENABLED],
1770 [AC_MSG_CHECKING([if selinux_is_enabled is available])
1771 LB_LINUX_TRY_COMPILE([
1772         #include <linux/selinux.h>
1773 ],[
1774         selinux_is_enabled();
1775 ],[
1776         AC_MSG_RESULT([yes])
1777         AC_DEFINE(HAVE_SELINUX_IS_ENABLED, 1,
1778                 [selinux_is_enabled is defined])
1779 ],[
1780         AC_MSG_RESULT([no])
1781 ])
1782 ])
1783
1784 #
1785 # LC_D_OBTAIN_ALIAS
1786 # starting from 2.6.28 kernel replaces d_alloc_anon() with
1787 # d_obtain_alias() for getting anonymous dentries
1788 # RHEL5(2.6.18) has d_obtain_alias but SLES11SP0(2.6.27) not
1789 #
1790 AC_DEFUN([LC_D_OBTAIN_ALIAS],
1791 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
1792 LB_LINUX_TRY_COMPILE([
1793         #include <linux/dcache.h>
1794 ],[
1795         d_obtain_alias(NULL);
1796 ],[
1797         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
1798                 [d_obtain_alias exist in kernel])
1799         AC_MSG_RESULT([yes])
1800 ],[
1801         AC_MSG_RESULT([no])
1802 ])
1803 ])
1804
1805 #
1806 # LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
1807 #
1808 AC_DEFUN([LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE],
1809          [LB_CHECK_SYMBOL_EXPORT(
1810                         [generic_error_remove_page],
1811                         [mm/truncate.c],
1812                         [AC_DEFINE(HAS_GENERIC_ERROR_REMOVE_PAGE, 1,
1813                                 [kernel export generic_error_remove_page])],
1814                         [])
1815          ]
1816 )
1817
1818 #
1819 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
1820 #
1821 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
1822 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
1823 LB_LINUX_TRY_COMPILE([
1824         #include <asm/atomic.h>
1825         #include <linux/spinlock.h>
1826         #include <linux/fs_struct.h>
1827 ],[
1828         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
1829 ],[
1830         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
1831                   [fs_struct.lock use rwlock])
1832         AC_MSG_RESULT([yes])
1833 ],[
1834         AC_MSG_RESULT([no])
1835 ])
1836 ])
1837
1838 #
1839 # 2.6.36 super_operations add evict_inode method. it hybird of
1840 # delete_inode & clear_inode.
1841 #
1842 AC_DEFUN([LC_SBOPS_EVICT_INODE],
1843 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
1844 LB_LINUX_TRY_COMPILE([
1845         #include <linux/fs.h>
1846 ],[
1847         ((struct super_operations *)0)->evict_inode(NULL);
1848 ],[
1849         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
1850                 [super_operations.evict_inode() is exist in kernel])
1851         AC_MSG_RESULT([yes])
1852 ],[
1853         AC_MSG_RESULT([no])
1854 ])
1855 ])
1856
1857 #
1858 # 2.6.35 file_operations.fsync taken 2 arguments.
1859 # 3.0.0 file_operations.fsync takes 4 arguments.
1860 #
1861 AC_DEFUN([LC_FILE_FSYNC],
1862 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
1863 LB_LINUX_TRY_COMPILE([
1864         #include <linux/fs.h>
1865 ],[
1866         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
1867 ],[
1868         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
1869                 [file_operations.fsync takes 4 arguments])
1870         AC_MSG_RESULT([yes, 4 args])
1871 ],[
1872         LB_LINUX_TRY_COMPILE([
1873                 #include <linux/fs.h>
1874         ],[
1875            ((struct file_operations *)0)->fsync(NULL, 0);
1876         ],[
1877                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
1878                         [file_operations.fsync takes 2 arguments])
1879                 AC_MSG_RESULT([yes, 2 args])
1880         ],[
1881                 AC_MSG_RESULT([no])
1882         ])
1883 ])
1884 ])
1885
1886 #
1887 # 2.6.38 export blkdev_get_by_dev
1888 #
1889 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
1890 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
1891 [fs/block_dev.c],[
1892 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
1893             [blkdev_get_by_dev is exported by the kernel])
1894 ],[
1895 ])
1896 ])
1897
1898 #
1899 # 2.6.38 vfsmount.mnt_count doesn't use atomic_t
1900 #
1901 AC_DEFUN([LC_ATOMIC_MNT_COUNT],
1902 [AC_MSG_CHECKING([if vfsmount.mnt_count is atomic_t])
1903 LB_LINUX_TRY_COMPILE([
1904         #include <asm/atomic.h>
1905         #include <linux/fs.h>
1906         #include <linux/mount.h>
1907 ],[
1908         ((struct vfsmount *)0)->mnt_count = ((atomic_t) { 0 });
1909 ],[
1910         AC_DEFINE(HAVE_ATOMIC_MNT_COUNT, 1,
1911                 [vfsmount.mnt_count is atomic_t])
1912         AC_MSG_RESULT([yes])
1913 ],[
1914         AC_MSG_RESULT([no])
1915 ])
1916 ])
1917
1918 #
1919 # 2.6.38 use path as 4th parameter in quota_on.
1920 #
1921 AC_DEFUN([LC_QUOTA_ON_USE_PATH],
1922 [AC_MSG_CHECKING([quota_on use path as parameter])
1923 tmp_flags="$EXTRA_KCFLAGS"
1924 EXTRA_KCFLAGS="-Werror"
1925 LB_LINUX_TRY_COMPILE([
1926         #include <linux/fs.h>
1927         #include <linux/quota.h>
1928 ],[
1929         ((struct quotactl_ops *)0)->quota_on(NULL, 0, 0, ((struct path*)0));
1930 ],[
1931         AC_DEFINE(HAVE_QUOTA_ON_USE_PATH, 1,
1932                 [quota_on use path as 4th paramter])
1933         AC_MSG_RESULT([yes])
1934 ],[
1935         AC_MSG_RESULT([no])
1936 ])
1937 EXTRA_KCFLAGS="$tmp_flags"
1938 ])
1939
1940 #
1941 # 2.6.39 remove unplug_fn from request_queue.
1942 #
1943 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
1944 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
1945 LB_LINUX_TRY_COMPILE([
1946         #include <linux/blkdev.h>
1947 ],[
1948         do{ }while(sizeof(((struct request_queue *)0)->unplug_fn));
1949 ],[
1950         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
1951                   [request_queue has unplug_fn field])
1952         AC_MSG_RESULT([yes])
1953 ],[
1954         AC_MSG_RESULT([no])
1955 ])
1956 ])
1957
1958 #
1959 # 2.6.38 generic_permission taken 4 paremater.
1960 # in fact, it means rcu-walk aware permission bring.
1961 #
1962 AC_DEFUN([LC_GENERIC_PERMISSION],
1963 [AC_MSG_CHECKING([if generic_permission take 4 arguments])
1964 LB_LINUX_TRY_COMPILE([
1965         #include <linux/fs.h>
1966 ],[
1967         generic_permission(NULL, 0, 0, NULL);
1968 ],[
1969         AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
1970                   [generic_permission taken 4 arguments])
1971         AC_MSG_RESULT([yes])
1972 ],[
1973         AC_MSG_RESULT([no])
1974 ])
1975 ])
1976
1977 #
1978 # 2.6.38 export simple_setattr
1979 #
1980 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
1981 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
1982 [fs/libfs.c],[
1983 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
1984             [simple_setattr is exported by the kernel])
1985 ],[
1986 ])
1987 ])
1988
1989 #
1990 # LC_PROG_LINUX
1991 #
1992 # Lustre linux kernel checks
1993 #
1994 AC_DEFUN([LC_PROG_LINUX],
1995          [LC_LUSTRE_VERSION_H
1996          LC_CONFIG_PINGER
1997          LC_CONFIG_CHECKSUM
1998          LC_CONFIG_LIBLUSTRE_RECOVERY
1999          LC_CONFIG_HEALTH_CHECK_WRITE
2000          LC_CONFIG_LRU_RESIZE
2001          LC_QUOTA_MODULE
2002          LC_LLITE_LLOOP_MODULE
2003
2004          # RHEL4 patches
2005          LC_EXPORT_TRUNCATE_COMPLETE
2006          LC_EXPORT_D_REHASH_COND
2007          LC_EXPORT___D_REHASH
2008          LC_EXPORT_NODE_TO_CPUMASK
2009
2010          LC_FILEMAP_POPULATE
2011          LC_BIT_SPINLOCK_H
2012
2013          LC_CONST_ACL_SIZE
2014
2015          LC_CAPA_CRYPTO
2016          LC_CONFIG_RMTCLIENT
2017          LC_CONFIG_GSS
2018          LC_QUOTA_READ
2019          LC_COOKIE_FOLLOW_LINK
2020          LC_FUNC_RCU
2021          LC_PERCPU_COUNTER
2022          LC_TASK_CLENV_STORE
2023
2024          # ~2.6.11
2025          LC_S_TIME_GRAN
2026          LC_SB_TIME_GRAN
2027
2028          # 2.6.12
2029          LC_RW_TREE_LOCK
2030
2031          # 2.6.15
2032          LC_INODE_I_MUTEX
2033
2034          # 2.6.16
2035          LC_SECURITY_PLUG  # for SLES10 SP2
2036
2037          # 2.6.17
2038          LC_INODE_IPRIVATE
2039          LC_DQUOTOFF_MUTEX
2040
2041          # 2.6.18
2042          LC_NR_PAGECACHE
2043          LC_STATFS_DENTRY_PARAM
2044          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2045          LC_FLUSH_OWNER_ID
2046          if test x$enable_server = xyes ; then
2047                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2048          fi
2049
2050          #2.6.18 + RHEL5 (fc6)
2051          LC_PG_FS_MISC
2052          LC_PAGE_CHECKED
2053          LC_LINUX_FIEMAP_H
2054
2055          # 2.6.19
2056          LC_INODE_BLKSIZE
2057          LC_FILE_WRITEV
2058          LC_FILE_READV
2059
2060          # 2.6.20
2061          LC_CANCEL_DIRTY_PAGE
2062
2063          # raid5-zerocopy patch
2064          LC_PAGE_CONSTANT
2065
2066          # 2.6.22
2067          LC_INVALIDATE_BDEV_2ARG
2068          LC_ASYNC_BLOCK_CIPHER
2069          LC_STRUCT_HASH_DESC
2070          LC_STRUCT_BLKCIPHER_DESC
2071          LC_FS_RENAME_DOES_D_MOVE
2072
2073          # 2.6.23
2074          LC_UNREGISTER_BLKDEV_RETURN_INT
2075          LC_KERNEL_SPLICE_READ
2076          LC_KERNEL_SENDFILE
2077          LC_HAVE_EXPORTFS_H
2078          LC_VM_OP_FAULT
2079          LC_PROCFS_USERS
2080          LC_EXPORTFS_DECODE_FH
2081
2082          # 2.6.24
2083          LC_HAVE_MMTYPES_H
2084          LC_BIO_ENDIO_2ARG
2085          LC_FH_TO_DENTRY
2086          LC_PROCFS_DELETED
2087          LC_EXPORT_BDI_INIT
2088
2089          # 2.6.26
2090          LC_FS_STRUCT_USE_PATH
2091
2092          # 2.6.27
2093          LC_PGMKWRITE_USE_VMFAULT
2094          LC_INODE_PERMISION_2ARGS
2095          LC_FILE_REMOVE_SUID
2096          LC_TRYLOCKPAGE
2097          LC_READ_INODE_IN_SBOPS
2098          LC_EXPORT_INODE_PERMISSION
2099          LC_QUOTA_ON_5ARGS
2100          LC_QUOTA_OFF_3ARGS
2101          LC_VFS_DQ_OFF
2102          LC_LOCK_MAP_ACQUIRE
2103
2104          # 2.6.27.15-2 sles11
2105          LC_BI_HW_SEGMENTS
2106          LC_HAVE_QUOTAIO_H
2107          LC_BDI_NAME
2108          LC_SB_ANY_QUOTA_ACTIVE
2109          LC_SB_HAS_QUOTA_ACTIVE
2110          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
2111
2112          # 2.6.29
2113          LC_SB_ANY_QUOTA_LOADED
2114
2115          # 2.6.30
2116          LC_EXPORT_CPUMASK_OF_NODE
2117
2118          # 2.6.31
2119          LC_BLK_QUEUE_LOG_BLK_SIZE
2120
2121          # 2.6.32
2122          LC_REQUEST_QUEUE_LIMITS
2123          LC_EXPORT_BDI_REGISTER
2124          LC_SB_BDI
2125          LC_BLK_QUEUE_MAX_SECTORS
2126          LC_BLK_QUEUE_MAX_SEGMENTS
2127          LC_SET_CPUS_ALLOWED
2128          LC_CACHE_UPCALL
2129          LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
2130          LC_SELINUX_IS_ENABLED
2131
2132          # 2.6.35, 3.0.0
2133          LC_FILE_FSYNC
2134          LC_EXPORT_SIMPLE_SETATTR
2135
2136          # 2.6.36
2137          LC_FS_STRUCT_RWLOCK
2138          LC_SBOPS_EVICT_INODE
2139
2140          # 2.6.38
2141          LC_ATOMIC_MNT_COUNT
2142          LC_BLKDEV_GET_BY_DEV
2143          LC_GENERIC_PERMISSION
2144          LC_QUOTA_ON_USE_PATH
2145
2146          # 2.6.39
2147          LC_REQUEST_QUEUE_UNPLUG_FN
2148
2149          #
2150          if test x$enable_server = xyes ; then
2151              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2152              LC_FUNC_DEV_SET_RDONLY
2153              LC_STACK_SIZE
2154              LC_QUOTA64
2155          fi
2156 ])
2157
2158 #
2159 # LC_CONFIG_CLIENT_SERVER
2160 #
2161 # Build client/server sides of Lustre
2162 #
2163 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2164 [AC_MSG_CHECKING([whether to build Lustre server support])
2165 AC_ARG_ENABLE([server],
2166         AC_HELP_STRING([--disable-server],
2167                         [disable Lustre server support]),
2168         [],[enable_server='yes'])
2169 AC_MSG_RESULT([$enable_server])
2170
2171 AC_MSG_CHECKING([whether to build Lustre client support])
2172 AC_ARG_ENABLE([client],
2173         AC_HELP_STRING([--disable-client],
2174                         [disable Lustre client support]),
2175         [],[enable_client='yes'])
2176 AC_MSG_RESULT([$enable_client])])
2177
2178 #
2179 # LC_CONFIG_LIBLUSTRE
2180 #
2181 # whether to build liblustre
2182 #
2183 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2184 [AC_MSG_CHECKING([whether to build Lustre library])
2185 AC_ARG_ENABLE([liblustre],
2186         AC_HELP_STRING([--disable-liblustre],
2187                         [disable building of Lustre library]),
2188         [],[enable_liblustre=$with_sysio])
2189 AC_MSG_RESULT([$enable_liblustre])
2190 # only build sysio if liblustre is built
2191 with_sysio="$enable_liblustre"
2192
2193 AC_MSG_CHECKING([whether to build liblustre tests])
2194 AC_ARG_ENABLE([liblustre-tests],
2195         AC_HELP_STRING([--enable-liblustre-tests],
2196                         [enable liblustre tests, if --disable-tests is used]),
2197         [],[enable_liblustre_tests=$enable_tests])
2198 if test x$enable_liblustre != xyes ; then
2199    enable_liblustre_tests='no'
2200 fi
2201 AC_MSG_RESULT([$enable_liblustre_tests])
2202
2203 AC_MSG_CHECKING([whether to enable liblustre acl])
2204 AC_ARG_ENABLE([liblustre-acl],
2205         AC_HELP_STRING([--disable-liblustre-acl],
2206                         [disable ACL support for liblustre]),
2207         [],[enable_liblustre_acl=yes])
2208 AC_MSG_RESULT([$enable_liblustre_acl])
2209 if test x$enable_liblustre_acl = xyes ; then
2210   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2211 fi
2212
2213 # 2.6.29 change prepare/commit_write to write_begin/end
2214 AC_DEFUN([LC_WRITE_BEGIN_END],
2215 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2216 LB_LINUX_TRY_COMPILE([
2217         #include <linux/fs.h>
2218         #include <linux/pagemap.h>
2219 #ifdef HAVE_LINUX_MMTYPES_H
2220         #include <linux/mm_types.h>
2221 #endif
2222 ],[
2223         struct address_space_operations aops;
2224         struct page *page;
2225
2226         aops.write_begin = NULL;
2227         aops.write_end = NULL;
2228         page = grab_cache_page_write_begin(NULL, 0, 0);
2229 ], [
2230         AC_MSG_RESULT([yes])
2231         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2232                 [kernel has .write_begin/end])
2233 ],[
2234         AC_MSG_RESULT([no])
2235 ])
2236 ])
2237
2238 # 2.6.29 blkdev_put has 2 arguments
2239 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2240 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2241 LB_LINUX_TRY_COMPILE([
2242         #include <linux/fs.h>
2243 ],[
2244         blkdev_put(NULL, 0);
2245 ],[
2246         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2247                 [blkdev_put needs 2 paramters])
2248         AC_MSG_RESULT([yes])
2249 ],[
2250         AC_MSG_RESULT([no])
2251 ])
2252 ])
2253
2254 # 2.6.29 dentry_open has 4 arguments
2255 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2256 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2257 LB_LINUX_TRY_COMPILE([
2258         #include <linux/fs.h>
2259 ],[
2260         dentry_open(NULL, NULL, 0, NULL);
2261 ],[
2262         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2263                 [dentry_open needs 4 paramters])
2264         AC_MSG_RESULT([yes])
2265 ],[
2266         AC_MSG_RESULT([no])
2267 ])
2268 ])
2269
2270 # 2.6.29 split file and anonymous page queues
2271 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2272 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2273 LB_LINUX_TRY_COMPILE([
2274         #include <linux/mm.h>
2275         #include <linux/pagevec.h>
2276 ],[
2277         struct pagevec lru_pagevec;
2278
2279         pagevec_init(&lru_pagevec, 0);
2280         pagevec_lru_add_file(&lru_pagevec);
2281 ],[
2282         AC_MSG_RESULT([yes])
2283         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2284                 [kernel has .pagevec_lru_add_file])
2285 ],[
2286         AC_MSG_RESULT([no])
2287 ])
2288 ])
2289
2290 #
2291 # --enable-mpitest
2292 #
2293 AC_ARG_ENABLE(mpitests,
2294         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2295                            [include mpi tests]),
2296         [
2297          enable_mpitests=yes
2298          case $enableval in
2299          yes)
2300                 MPICC_WRAPPER=mpicc
2301                 ;;
2302          no)
2303                 enable_mpitests=no
2304                 ;;
2305          *)
2306                 MPICC_WRAPPER=$enableval
2307                  ;;
2308          esac
2309         ],
2310         [
2311         MPICC_WRAPPER=mpicc
2312         enable_mpitests=yes
2313         ]
2314 )
2315
2316 if test x$enable_mpitests != xno; then
2317         AC_MSG_CHECKING([whether mpitests can be built])
2318         oldcc=$CC
2319         CC=$MPICC_WRAPPER
2320         AC_LINK_IFELSE(
2321             [AC_LANG_PROGRAM([[
2322                     #include <mpi.h>
2323                 ]],[[
2324                     int flag;
2325                     MPI_Initialized(&flag);
2326                 ]])],
2327             [
2328                     AC_MSG_RESULT([yes])
2329             ],[
2330                     AC_MSG_RESULT([no])
2331                     enable_mpitests=no
2332         ])
2333         CC=$oldcc
2334 fi
2335 AC_SUBST(MPICC_WRAPPER)
2336
2337 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2338 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2339
2340 LC_CONFIG_PINGER
2341 LC_CONFIG_LIBLUSTRE_RECOVERY
2342 ])
2343
2344 #
2345 # LC_CONFIG_QUOTA
2346 #
2347 # whether to enable quota support global control
2348 #
2349 AC_DEFUN([LC_CONFIG_QUOTA],
2350 [AC_ARG_ENABLE([quota],
2351         AC_HELP_STRING([--enable-quota],
2352                         [enable quota support]),
2353         [],[enable_quota='yes'])
2354 ])
2355
2356 AC_DEFUN([LC_QUOTA],
2357 [#check global
2358 LC_CONFIG_QUOTA
2359 #check for utils
2360 AC_CHECK_HEADER(sys/quota.h,
2361                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2362                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2363 ])
2364
2365 #
2366 # LC_CONFIG_SPLIT
2367 #
2368 # whether to enable split support
2369 #
2370 AC_DEFUN([LC_CONFIG_SPLIT],
2371 [AC_MSG_CHECKING([whether to enable split support])
2372 AC_ARG_ENABLE([split],
2373         AC_HELP_STRING([--enable-split],
2374                         [enable split support]),
2375         [],[enable_split='no'])
2376 AC_MSG_RESULT([$enable_split])
2377 if test x$enable_split != xno; then
2378    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2379 fi
2380 ])
2381
2382 # RHEL5(2.6.18) has tux_info
2383 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2384 [AC_MSG_CHECKING([tux_info])
2385 LB_LINUX_TRY_COMPILE([
2386         #include <linux/sched.h>
2387 ],[
2388         struct task_struct task;
2389         &task.tux_info;
2390 ],[
2391         AC_MSG_RESULT([yes])
2392         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2393         have_task_clenv_store='yes'
2394 ],[
2395         AC_MSG_RESULT([no])
2396 ])
2397 ])
2398
2399 #
2400 # LC_LLITE_LLOOP_MODULE
2401 # lloop_llite.ko does not currently work with page sizes
2402 # of 64k or larger.
2403 #
2404 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2405 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2406 LB_LINUX_TRY_COMPILE([
2407         #include <asm/page.h>
2408 ],[
2409         #if PAGE_SIZE >= 65536
2410         #error "PAGE_SIZE >= 65536"
2411         #endif
2412 ],[
2413         enable_llite_lloop_module='yes'
2414         AC_MSG_RESULT([yes])
2415 ],[
2416         enable_llite_lloop_module='no'
2417         AC_MSG_RESULT([no])
2418 ])
2419 ])
2420
2421 #
2422 # LC_CONFIGURE
2423 #
2424 # other configure checks
2425 #
2426 AC_DEFUN([LC_CONFIGURE],
2427 [LC_CONFIG_OBD_BUFFER_SIZE
2428
2429 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2430         CFLAGS="$CFLAGS -Werror"
2431 fi
2432
2433 # maximum MDS thread count
2434 LC_MDS_MAX_THREADS
2435
2436 # include/liblustre.h
2437 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2438
2439 # liblustre/llite_lib.h
2440 AC_CHECK_HEADERS([xtio.h file.h])
2441
2442 # liblustre/dir.c
2443 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2444
2445 # liblustre/lutil.c
2446 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2447 AC_CHECK_FUNCS([inet_ntoa])
2448
2449 # libsysio/src/readlink.c
2450 LC_READLINK_SSIZE_T
2451
2452 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2453 AC_CHECK_HEADERS([linux/random.h], [], [],
2454                  [#ifdef HAVE_LINUX_TYPES_H
2455                   # include <linux/types.h>
2456                   #endif
2457                  ])
2458
2459 # utils/llverfs.c
2460 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2461
2462 # check for -lz support
2463 ZLIB=""
2464 AC_CHECK_LIB([z],
2465              [adler32],
2466              [AC_CHECK_HEADERS([zlib.h],
2467                                [ZLIB="-lz"
2468                                 AC_DEFINE([HAVE_ADLER], 1,
2469                                           [support alder32 checksum type])],
2470                                [AC_MSG_WARN([No zlib-devel package found,
2471                                              unable to use adler32 checksum])])],
2472              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2473 )
2474 AC_SUBST(ZLIB)
2475
2476 # Super safe df
2477 AC_ARG_ENABLE([mindf],
2478       AC_HELP_STRING([--enable-mindf],
2479                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2480       [],[])
2481 if test "$enable_mindf" = "yes" ;  then
2482       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2483 fi
2484
2485 AC_ARG_ENABLE([fail_alloc],
2486         AC_HELP_STRING([--disable-fail-alloc],
2487                 [disable randomly alloc failure]),
2488         [],[enable_fail_alloc=yes])
2489 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2490 AC_MSG_RESULT([$enable_fail_alloc])
2491 if test x$enable_fail_alloc != xno ; then
2492         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2493 fi
2494
2495 AC_ARG_ENABLE([invariants],
2496         AC_HELP_STRING([--enable-invariants],
2497                 [enable invariant checking (cpu intensive)]),
2498         [],[])
2499 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2500 AC_MSG_RESULT([$enable_invariants])
2501 if test x$enable_invariants = xyes ; then
2502         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2503 fi
2504
2505 AC_ARG_ENABLE([lu_ref],
2506         AC_HELP_STRING([--enable-lu_ref],
2507                 [enable lu_ref reference tracking code]),
2508         [],[])
2509 AC_MSG_CHECKING([whether to track references with lu_ref])
2510 AC_MSG_RESULT([$enable_lu_ref])
2511 if test x$enable_lu_ref = xyes ; then
2512         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2513 fi
2514
2515 AC_ARG_ENABLE([pgstate-track],
2516               AC_HELP_STRING([--enable-pgstate-track],
2517                              [enable page state tracking]),
2518               [enable_pgstat_track='yes'],[])
2519 AC_MSG_CHECKING([whether to enable page state tracking])
2520 AC_MSG_RESULT([$enable_pgstat_track])
2521 if test x$enable_pgstat_track = xyes ; then
2522         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2523                   [enable page state tracking code])
2524 fi
2525
2526          #2.6.29
2527          LC_WRITE_BEGIN_END
2528          LC_D_OBTAIN_ALIAS
2529          LC_BLKDEV_PUT_2ARGS
2530          LC_DENTRY_OPEN_4ARGS
2531          LC_PAGEVEC_LRU_ADD_FILE
2532
2533 ])
2534
2535 #
2536 # LC_CONDITIONALS
2537 #
2538 # AM_CONDITIONALS for lustre
2539 #
2540 AC_DEFUN([LC_CONDITIONALS],
2541 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2542 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2543 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2544 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2545 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2546 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2547 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2548 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2549 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2550 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2551 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2552 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2553 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2554 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2555 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2556 ])
2557
2558 #
2559 # LC_CONFIG_FILES
2560 #
2561 # files that should be generated with AC_OUTPUT
2562 #
2563 AC_DEFUN([LC_CONFIG_FILES],
2564 [AC_CONFIG_FILES([
2565 lustre/Makefile
2566 lustre/autoMakefile
2567 lustre/autoconf/Makefile
2568 lustre/conf/Makefile
2569 lustre/contrib/Makefile
2570 lustre/doc/Makefile
2571 lustre/include/Makefile
2572 lustre/include/lustre_ver.h
2573 lustre/include/linux/Makefile
2574 lustre/include/darwin/Makefile
2575 lustre/include/lustre/Makefile
2576 lustre/kernel_patches/targets/2.6-rhel6.target
2577 lustre/kernel_patches/targets/2.6-rhel5.target
2578 lustre/kernel_patches/targets/2.6-sles10.target
2579 lustre/kernel_patches/targets/2.6-sles11.target
2580 lustre/kernel_patches/targets/2.6-oel5.target
2581 lustre/kernel_patches/targets/2.6-fc11.target
2582 lustre/kernel_patches/targets/2.6-fc12.target
2583 lustre/ldlm/Makefile
2584 lustre/fid/Makefile
2585 lustre/fid/autoMakefile
2586 lustre/liblustre/Makefile
2587 lustre/liblustre/tests/Makefile
2588 lustre/liblustre/tests/mpi/Makefile
2589 lustre/llite/Makefile
2590 lustre/llite/autoMakefile
2591 lustre/lclient/Makefile
2592 lustre/lov/Makefile
2593 lustre/lov/autoMakefile
2594 lustre/lvfs/Makefile
2595 lustre/lvfs/autoMakefile
2596 lustre/mdc/Makefile
2597 lustre/mdc/autoMakefile
2598 lustre/lmv/Makefile
2599 lustre/lmv/autoMakefile
2600 lustre/mds/Makefile
2601 lustre/mds/autoMakefile
2602 lustre/mdt/Makefile
2603 lustre/mdt/autoMakefile
2604 lustre/cmm/Makefile
2605 lustre/cmm/autoMakefile
2606 lustre/mdd/Makefile
2607 lustre/mdd/autoMakefile
2608 lustre/fld/Makefile
2609 lustre/fld/autoMakefile
2610 lustre/obdclass/Makefile
2611 lustre/obdclass/autoMakefile
2612 lustre/obdclass/linux/Makefile
2613 lustre/obdecho/Makefile
2614 lustre/obdecho/autoMakefile
2615 lustre/obdfilter/Makefile
2616 lustre/obdfilter/autoMakefile
2617 lustre/osc/Makefile
2618 lustre/osc/autoMakefile
2619 lustre/ost/Makefile
2620 lustre/ost/autoMakefile
2621 lustre/osd-ldiskfs/Makefile
2622 lustre/osd-ldiskfs/autoMakefile
2623 lustre/mgc/Makefile
2624 lustre/mgc/autoMakefile
2625 lustre/mgs/Makefile
2626 lustre/mgs/autoMakefile
2627 lustre/ptlrpc/Makefile
2628 lustre/ptlrpc/autoMakefile
2629 lustre/ptlrpc/gss/Makefile
2630 lustre/ptlrpc/gss/autoMakefile
2631 lustre/quota/Makefile
2632 lustre/quota/autoMakefile
2633 lustre/scripts/Makefile
2634 lustre/tests/Makefile
2635 lustre/tests/mpi/Makefile
2636 lustre/utils/Makefile
2637 lustre/utils/gss/Makefile
2638 lustre/obdclass/darwin/Makefile
2639 ])
2640 ])