lustre/autoconf/lustre-core.m4

   1 #
   2 # LC_CONFIG_SRCDIR
   3 #
   4 # Wrapper for AC_CONFIG_SUBDIR
   5 #
   6 AC_DEFUN([LC_CONFIG_SRCDIR],
   7 [AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
   8 libcfs_is_module=yes
   9 ldiskfs_is_ext4=yes
  10 ])
  11
  12 #
  13 # LC_PATH_DEFAULTS
  14 #
  15 # lustre specific paths
  16 #
  17 AC_DEFUN([LC_PATH_DEFAULTS],
  18 [# ptlrpc kernel build requires this
  19 LUSTRE="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ])
  32
  33 #
  34 # LC_TARGET_SUPPORTED
  35 #
  36 # is the target os supported?
  37 #
  38 AC_DEFUN([LC_TARGET_SUPPORTED],
  39 [case $target_os in
  40         linux* | darwin*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ])
  48
  49 #
  50 # LC_CONFIG_OBD_BUFFER_SIZE
  51 #
  52 # the maximum buffer size of lctl ioctls
  53 #
  54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
  55 [AC_MSG_CHECKING([maximum OBD ioctl size])
  56 AC_ARG_WITH([obd-buffer-size],
  57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  58                         [set lctl ioctl maximum bytes (default=8192)]),
  59         [
  60                 OBD_BUFFER_SIZE=$with_obd_buffer_size
  61         ],[
  62                 OBD_BUFFER_SIZE=8192
  63         ])
  64 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  65 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
  66 ])
  67
  68 #
  69 # LC_READLINK_SSIZE_T
  70 #
  71 AC_DEFUN([LC_READLINK_SSIZE_T],
  72 [AC_MSG_CHECKING([if readlink returns ssize_t])
  73 AC_TRY_COMPILE([
  74         #include <unistd.h>
  75 ],[
  76         ssize_t readlink(const char *, char *, size_t);
  77 ],[
  78         AC_MSG_RESULT([yes])
  79         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
  80 ],[
  81         AC_MSG_RESULT([no])
  82 ])
  83 ])
  84
  85 #
  86 # LC_FUNC_DEV_SET_RDONLY
  87 #
  88 # check whether dev_set_rdonly is exported.  This is needed until we
  89 # have another mechanism to fence IO from the underlying device.
  90 #
  91 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
  92 [LB_CHECK_SYMBOL_EXPORT([dev_set_rdonly],
  93 [block/ll_rw_block.c,block/blk-core.c],[
  94         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel exports dev_set_rdonly])
  95 ],[
  96         AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])
  97 ])
  98 ])
  99
 100 #
 101 # Ensure stack size big than 8k in Lustre server (all kernels)
 102 #
 103 AC_DEFUN([LC_STACK_SIZE],
 104 [AC_MSG_CHECKING([stack size big than 8k])
 105 LB_LINUX_TRY_COMPILE([
 106         #include <linux/thread_info.h>
 107 ],[
 108         #if THREAD_SIZE < 8192
 109         #error "stack size < 8192"
 110         #endif
 111 ],[
 112         AC_MSG_RESULT(yes)
 113 ],[
 114         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
 115 ])
 116 ])
 117
 118 #
 119 # Allow the user to set the MDS thread upper limit
 120 #
 121 AC_DEFUN([LC_MDS_MAX_THREADS],
 122 [
 123         AC_ARG_WITH([mds_max_threads],
 124         AC_HELP_STRING([--with-mds-max-threads=size],
 125                         [define the maximum number of threads available on the MDS: (default=512)]),
 126         [
 127                 MDS_THREAD_COUNT=$with_mds_max_threads
 128                 AC_DEFINE_UNQUOTED(MDT_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of mdt threads])
 129         ])
 130 ])
 131
 132 #
 133 # LC_CONFIG_PINGER
 134 #
 135 # the pinger is temporary, until we have the recovery node in place
 136 #
 137 AC_DEFUN([LC_CONFIG_PINGER],
 138 [AC_MSG_CHECKING([whether to enable pinger support])
 139 AC_ARG_ENABLE([pinger],
 140         AC_HELP_STRING([--disable-pinger],
 141                         [disable recovery pinger support]),
 142         [],[enable_pinger='yes'])
 143 AC_MSG_RESULT([$enable_pinger])
 144 if test x$enable_pinger != xno ; then
 145   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 146 fi
 147 ])
 148
 149 #
 150 # LC_CONFIG_CHECKSUM
 151 #
 152 # do checksum of bulk data between client and OST
 153 #
 154 AC_DEFUN([LC_CONFIG_CHECKSUM],
 155 [AC_MSG_CHECKING([whether to enable data checksum support])
 156 AC_ARG_ENABLE([checksum],
 157        AC_HELP_STRING([--disable-checksum],
 158                        [disable data checksum support]),
 159        [],[enable_checksum='yes'])
 160 AC_MSG_RESULT([$enable_checksum])
 161 if test x$enable_checksum != xno ; then
 162   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 163 fi
 164 ])
 165
 166 #
 167 # LC_CONFIG_LIBLUSTRE_RECOVERY
 168 #
 169 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 170 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 171 AC_ARG_ENABLE([liblustre-recovery],
 172         AC_HELP_STRING([--disable-liblustre-recovery],
 173                         [disable liblustre recovery support]),
 174         [],[enable_liblustre_recovery='yes'])
 175 AC_MSG_RESULT([$enable_liblustre_recovery])
 176 if test x$enable_liblustre_recovery != xno ; then
 177   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 178 fi
 179 ])
 180
 181 #
 182 # LC_CONFIG_HEALTH_CHECK_WRITE
 183 #
 184 # Turn off the actual write to the disk
 185 #
 186 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 187 [AC_MSG_CHECKING([whether to enable a write with the health check])
 188 AC_ARG_ENABLE([health_write],
 189         AC_HELP_STRING([--enable-health_write],
 190                         [enable disk writes when doing health check]),
 191         [],[enable_health_write='no'])
 192 AC_MSG_RESULT([$enable_health_write])
 193 if test x$enable_health_write != xno ; then
 194   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 195 fi
 196 ])
 197
 198 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
 199 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
 200 AC_ARG_ENABLE([lru_resize],
 201         AC_HELP_STRING([--enable-lru-resize],
 202                         [enable lru resize support]),
 203         [],[enable_lru_resize='yes'])
 204 AC_MSG_RESULT([$enable_lru_resize])
 205 if test x$enable_lru_resize != xno; then
 206    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 207 fi
 208 ])
 209
 210 #
 211 # Quota support. The kernel must support CONFIG_QUOTA.
 212 #
 213 AC_DEFUN([LC_QUOTA_CONFIG],
 214 [LB_LINUX_CONFIG_IM([QUOTA],[AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [support quota])],[
 215         AC_MSG_ERROR([Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.])
 216 ])
 217 ])
 218
 219 # truncate_complete_page() was exported from RHEL5/SLES10, but not in SLES11 SP0 (2.6.27)
 220 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 221 # delete_from_page_cache() is exported from 2.6.39
 222 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 223          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 224                                  [mm/truncate.c],
 225                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 226                                             [kernel export truncate_complete_page])])
 227           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
 228                                  [mm/filemap.c],
 229                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 230                                             [kernel export remove_from_page_cache])])
 231           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
 232                                  [mm/filemap.c],
 233                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 234                                             [kernel export delete_from_page_cache])])
 235          ])
 236
 237 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
 238 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
 239 [fs/dcache.c],[
 240 AC_DEFINE(HAVE_D_REHASH_COND, 1,
 241             [d_rehash_cond is exported by the kernel])
 242 ],[
 243 ])
 244 ])
 245
 246 AC_DEFUN([LC_EXPORT___D_REHASH],
 247 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
 248 [fs/dcache.c],[
 249 AC_DEFINE(HAVE___D_REHASH, 1,
 250             [__d_rehash is exported by the kernel])
 251 ],[
 252 ])
 253 ])
 254
 255 # The actual symbol exported varies among architectures, so we need
 256 # to check many symbols (but only in the current architecture.)  No
 257 # matter what symbol is exported, the kernel #defines node_to_cpumask
 258 # to the appropriate function and that's what we use.
 259 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
 260          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
 261                                  [arch/$LINUX_ARCH/mm/numa.c],
 262                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 263                                             [node_to_cpumask is exported by
 264                                              the kernel])]) # x86_64
 265           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
 266                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 267                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 268                                             [node_to_cpumask is exported by
 269                                              the kernel])]) # ia64
 270           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
 271                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 272                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 273                                             [node_to_cpumask is exported by
 274                                              the kernel])]) # i386
 275           ])
 276
 277 #
 278 #
 279 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
 280 #
 281 AC_DEFUN([LC_FILEMAP_POPULATE],
 282 [AC_MSG_CHECKING([for exported filemap_populate])
 283 LB_LINUX_TRY_COMPILE([
 284         #include <asm/page.h>
 285         #include <linux/mm.h>
 286 ],[
 287        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 288 ],[
 289         AC_MSG_RESULT([yes])
 290         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 291 ],[
 292         AC_MSG_RESULT([no])
 293 ])
 294 ])
 295
 296 #
 297 # added in 2.6.17
 298 #
 299 AC_DEFUN([LC_BIT_SPINLOCK_H],
 300 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 301         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 302         LB_LINUX_TRY_COMPILE([
 303                 #include <asm/processor.h>
 304                 #include <linux/spinlock.h>
 305                 #include <linux/bit_spinlock.h>
 306         ],[],[
 307                 AC_MSG_RESULT([yes])
 308                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 309         ],[
 310                 AC_MSG_RESULT([no])
 311         ])
 312 ],
 313 [])
 314 ])
 315
 316 #
 317 # LC_CONST_ACL_SIZE
 318 #
 319 AC_DEFUN([LC_CONST_ACL_SIZE],
 320 [AC_MSG_CHECKING([calc acl size])
 321 tmp_flags="$CFLAGS"
 322 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"
 323 AC_TRY_RUN([
 324         #define __KERNEL__
 325         #include <linux/types.h>
 326         #undef __KERNEL__
 327         // block include
 328         #define __LINUX_POSIX_ACL_H
 329
 330         #ifdef CONFIG_FS_POSIX_ACL
 331         # include <linux/posix_acl_xattr.h>
 332         #endif
 333
 334         #include <stdio.h>
 335
 336         int main(void)
 337         {
 338                 /* LUSTRE_POSIX_ACL_MAX_ENTRIES  = 32 */
 339             int size = posix_acl_xattr_size(32);
 340             FILE *f = fopen("acl.size","w+");
 341             fprintf(f,"%d", size);
 342             fclose(f);
 343
 344             return 0;
 345         }
 346 ],[
 347         acl_size=`cat acl.size`
 348         AC_MSG_RESULT([ACL size $acl_size])
 349         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
 350 ],[
 351         AC_ERROR([ACL size can't be computed])
 352 ],[
 353         AC_MSG_RESULT([can't check ACL size, make it 260])
 354         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE,260)
 355 ])
 356 CFLAGS="$tmp_flags"
 357 ])
 358
 359 #
 360 # LC_CAPA_CRYPTO
 361 #
 362 AC_DEFUN([LC_CAPA_CRYPTO],
 363 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 364         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 365 ])
 366 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 367         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 368 ])
 369 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 370         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 371 ])
 372 ])
 373
 374 #
 375 # LC_CONFIG_RMTCLIENT
 376 #
 377 dnl FIXME
 378 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 379 dnl FIXME
 380 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 381 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 382         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 383 ])
 384 ])
 385
 386 #
 387 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 388 #
 389 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 390 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 391  AC_ARG_ENABLE([gss_keyring],
 392                [AC_HELP_STRING([--disable-gss-keyring],
 393                                [disable gss keyring backend])],
 394                [],[enable_gss_keyring='yes'])
 395  AC_MSG_RESULT([$enable_gss_keyring])
 396
 397  if test x$enable_gss_keyring != xno; then
 398         LB_LINUX_CONFIG_IM([KEYS],[],
 399                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 400
 401         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 402                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 403
 404         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 405                   [Define this if you enable gss keyring backend])
 406  fi
 407 ])
 408
 409 AC_DEFUN([LC_CONFIG_SUNRPC],
 410 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 411                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 412 ])
 413
 414 #
 415 # LC_CONFIG_GSS (default disabled)
 416 #
 417 # Build gss and related tools of Lustre. Currently both kernel and user space
 418 # parts are depend on linux platform.
 419 #
 420 AC_DEFUN([LC_CONFIG_GSS],
 421 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 422  AC_ARG_ENABLE([gss],
 423                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 424                [],[enable_gss='no'])
 425  AC_MSG_RESULT([$enable_gss])
 426
 427  if test x$enable_gss == xyes; then
 428         LC_CONFIG_GSS_KEYRING
 429         LC_CONFIG_SUNRPC
 430
 431         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 432
 433         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 434                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 435         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 436                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 437         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 438                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 439         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 440                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 441
 442         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 443                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 444                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 445                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 446                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 447
 448         AC_SUBST(GSSAPI_LIBS)
 449
 450         AC_KERBEROS_V5
 451  fi
 452 ])
 453
 454 AC_DEFUN([LC_TASK_CLENV_STORE],
 455 [
 456         AC_MSG_CHECKING([if we can store cl_env in task_struct])
 457         if test x$have_task_clenv_store != xyes ; then
 458                 LC_TASK_CLENV_TUX_INFO
 459         fi
 460 ])
 461
 462 # 2.6.12
 463
 464 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
 465 # yet tree_lock is converted from rwlock to spin_lock since v2.6.26
 466 AC_DEFUN([LC_RW_TREE_LOCK],
 467 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
 468 tmp_flags="$EXTRA_KCFLAGS"
 469 EXTRA_KCFLAGS="-Werror"
 470 LB_LINUX_TRY_COMPILE([
 471         #include <linux/fs.h>
 472 ],[
 473         struct address_space a;
 474
 475         write_lock(&a.tree_lock);
 476 ],[
 477         AC_MSG_RESULT([yes])
 478         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
 479 ],[
 480         AC_MSG_RESULT([no])
 481 ])
 482 EXTRA_KCFLAGS="$tmp_flags"
 483 ])
 484
 485 # 2.6.18
 486
 487 # LC_NR_PAGECACHE
 488 # 2.6.18 don't export nr_pagecahe
 489 AC_DEFUN([LC_NR_PAGECACHE],
 490 [AC_MSG_CHECKING([kernel export nr_pagecache])
 491 LB_LINUX_TRY_COMPILE([
 492         #include <linux/pagemap.h>
 493 ],[
 494         return atomic_read(&nr_pagecache);
 495 ],[
 496         AC_MSG_RESULT(yes)
 497         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 498                 [is kernel export nr_pagecache])
 499 ],[
 500         AC_MSG_RESULT(no)
 501 ])
 502 ])
 503
 504 #
 505 # LC_STATFS_DENTRY_PARAM
 506 # starting from 2.6.18 linux kernel uses dentry instead of super_block
 507 # for the first parameter of the super_operations->statfs() callback.
 508 #
 509 #
 510 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 511 [AC_MSG_CHECKING([if super_ops.statfs() first parameter is dentry])
 512 tmp_flags="$EXTRA_KCFLAGS"
 513 EXTRA_KCFLAGS="-Werror"
 514 LB_LINUX_TRY_COMPILE([
 515         #include <linux/fs.h>
 516 ],[
 517         ((struct super_operations *)0)->statfs((struct dentry *)0, (struct kstatfs*)0);
 518 ],[
 519         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 520                   [super_ops.statfs() first parameter is dentry])
 521         AC_MSG_RESULT([yes])
 522 ],[
 523         AC_MSG_RESULT([no])
 524 ])
 525 EXTRA_KCFLAGS="$tmp_flags"
 526 ])
 527
 528 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 529 # 2.6.18~2.6.25 umount_begin has different parameters
 530 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 531 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 532 tmp_flags="$EXTRA_KCFLAGS"
 533 EXTRA_KCFLAGS="-Werror"
 534 LB_LINUX_TRY_COMPILE([
 535         #include <linux/fs.h>
 536
 537         struct vfsmount;
 538         static void cfg_umount_begin (struct vfsmount *v, int flags)
 539         {
 540                 ;
 541         }
 542
 543         static struct super_operations cfg_super_operations = {
 544                 .umount_begin   = cfg_umount_begin,
 545         };
 546 ],[
 547         cfg_super_operations.umount_begin(NULL,0);
 548 ],[
 549         AC_MSG_RESULT(yes)
 550         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
 551                 [Define umount_begin need second argument])
 552 ],[
 553         AC_MSG_RESULT(no)
 554 ])
 555 EXTRA_KCFLAGS="$tmp_flags"
 556 ])
 557
 558 # LC_FLUSH_OWNER_ID
 559 # starting from 2.6.18 the file_operations .flush
 560 # method has a new "fl_owner_t id" parameter
 561 #
 562 AC_DEFUN([LC_FLUSH_OWNER_ID],
 563 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
 564 LB_LINUX_TRY_COMPILE([
 565         #include <linux/fs.h>
 566 ],[
 567         struct file_operations *fops = NULL;
 568         fl_owner_t id = NULL;
 569         int i;
 570
 571         i = fops->flush(NULL, id);
 572 ],[
 573         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
 574                 [file_operations .flush method has an fl_owner_t id])
 575         AC_MSG_RESULT([yes])
 576 ],[
 577         AC_MSG_RESULT([no])
 578 ])
 579 ])
 580
 581 #
 582 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
 583 #
 584 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
 585 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
 586 #
 587 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
 588     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
 589          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
 590                         [exported invalidate_mapping_pages])],
 591     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
 592          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
 593                         [exported invalidate_inode_pages])], [
 594        AC_MSG_ERROR([no way to invalidate pages])
 595   ])
 596     ],[])
 597 ])
 598
 599 #2.6.18 + RHEL5 (fc6)
 600
 601 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
 602 AC_DEFUN([LC_PG_FS_MISC],
 603 [AC_MSG_CHECKING([kernel has PG_fs_misc])
 604 LB_LINUX_TRY_COMPILE([
 605         #include <linux/mm.h>
 606         #include <linux/page-flags.h>
 607 ],[
 608         #ifndef PG_fs_misc
 609         #error PG_fs_misc not defined in kernel
 610         #endif
 611 ],[
 612         AC_MSG_RESULT(yes)
 613         AC_DEFINE(HAVE_PG_FS_MISC, 1,
 614                   [is kernel have PG_fs_misc])
 615 ],[
 616         AC_MSG_RESULT(no)
 617 ])
 618 ])
 619
 620 # RHEL5 PageChecked and SetPageChecked defined
 621 AC_DEFUN([LC_PAGE_CHECKED],
 622 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
 623 LB_LINUX_TRY_COMPILE([
 624         #include <linux/mm.h>
 625 #ifdef HAVE_LINUX_MMTYPES_H
 626         #include <linux/mm_types.h>
 627 #endif
 628         #include <linux/page-flags.h>
 629 ],[
 630         struct page *p = NULL;
 631
 632         /* before 2.6.26 this define*/
 633         #ifndef PageChecked
 634         /* 2.6.26 use function instead of define for it */
 635         SetPageChecked(p);
 636         PageChecked(p);
 637         #endif
 638 ],[
 639         AC_MSG_RESULT(yes)
 640         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
 641                   [does kernel have PageChecked and SetPageChecked])
 642 ],[
 643         AC_MSG_RESULT(no)
 644 ])
 645 ])
 646
 647 #
 648 # LC_LINUX_FIEMAP_H
 649 #
 650 # If we have fiemap.h
 651 # after 2.6.27 use fiemap.h in include/linux
 652 #
 653 AC_DEFUN([LC_LINUX_FIEMAP_H],
 654 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
 655         AC_MSG_CHECKING([if fiemap.h can be compiled])
 656         LB_LINUX_TRY_COMPILE([
 657                 #include <linux/types.h>
 658                 #include <linux/fiemap.h>
 659         ],[],[
 660                 AC_MSG_RESULT([yes])
 661                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
 662         ],[
 663                 AC_MSG_RESULT([no])
 664         ])
 665 ],
 666 [])
 667 ])
 668
 669 # 2.6.19
 670
 671 # 2.6.19 API changes
 672 # inode don't have i_blksize field
 673 AC_DEFUN([LC_INODE_BLKSIZE],
 674 [AC_MSG_CHECKING([inode has i_blksize field])
 675 LB_LINUX_TRY_COMPILE([
 676 #include <linux/fs.h>
 677 ],[
 678         struct inode i;
 679         i.i_blksize = 0;
 680 ],[
 681         AC_MSG_RESULT(yes)
 682         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
 683                 [struct inode has i_blksize field])
 684 ],[
 685         AC_MSG_RESULT(no)
 686 ])
 687 ])
 688
 689 # LC_FILE_WRITEV
 690 # 2.6.19 replaced writev with aio_write
 691 AC_DEFUN([LC_FILE_WRITEV],
 692 [AC_MSG_CHECKING([writev in fops])
 693 LB_LINUX_TRY_COMPILE([
 694         #include <linux/fs.h>
 695 ],[
 696         struct file_operations *fops = NULL;
 697         fops->writev = NULL;
 698 ],[
 699         AC_MSG_RESULT(yes)
 700         AC_DEFINE(HAVE_FILE_WRITEV, 1,
 701                 [use fops->writev])
 702 ],[
 703         AC_MSG_RESULT(no)
 704 ])
 705 ])
 706
 707 # LC_FILE_READV
 708 # 2.6.19 replaced readv with aio_read
 709 AC_DEFUN([LC_FILE_READV],
 710 [AC_MSG_CHECKING([readv in fops])
 711 LB_LINUX_TRY_COMPILE([
 712         #include <linux/fs.h>
 713 ],[
 714         struct file_operations *fops = NULL;
 715         fops->readv = NULL;
 716 ],[
 717         AC_MSG_RESULT(yes)
 718         AC_DEFINE(HAVE_FILE_READV, 1,
 719                 [use fops->readv])
 720 ],[
 721         AC_MSG_RESULT(no)
 722 ])
 723 ])
 724
 725 # 2.6.20
 726
 727 # LC_CANCEL_DIRTY_PAGE
 728 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
 729 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
 730         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
 731         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
 732         # backport is broken, so ignore it
 733         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
 734            test "$(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
 735                 AC_MSG_RESULT(no)
 736         else
 737                 LB_LINUX_TRY_COMPILE([
 738                         #include <linux/mm.h>
 739                         #include <linux/page-flags.h>
 740 ],[
 741                         cancel_dirty_page(NULL, 0);
 742 ],[
 743                         AC_MSG_RESULT(yes)
 744                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
 745                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
 746 ],[
 747                         AC_MSG_RESULT(no)
 748 ])
 749         fi
 750 ])
 751
 752 # raid5-zerocopy patch
 753
 754 #
 755 # LC_PAGE_CONSTANT
 756 #
 757 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
 758 # it support constant page, which means the page won't be modified during the
 759 # IO.
 760 #
 761 AC_DEFUN([LC_PAGE_CONSTANT],
 762 [AC_MSG_CHECKING([if kernel have PageConstant defined])
 763 LB_LINUX_TRY_COMPILE([
 764         #include <linux/mm.h>
 765         #include <linux/page-flags.h>
 766 ],[
 767         #ifndef PG_constant
 768         #error "Have no raid5 zcopy patch"
 769         #endif
 770 ],[
 771         AC_MSG_RESULT(yes)
 772         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
 773 ],[
 774         AC_MSG_RESULT(no);
 775 ])
 776 ])
 777
 778 # 2.6.22
 779
 780 # 2.6.22 lost second parameter for invalidate_bdev
 781 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
 782 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
 783 LB_LINUX_TRY_COMPILE([
 784         #include <linux/buffer_head.h>
 785 ],[
 786         invalidate_bdev(NULL,0);
 787 ],[
 788         AC_MSG_RESULT([yes])
 789         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
 790                 [invalidate_bdev has second argument])
 791 ],[
 792         AC_MSG_RESULT([no])
 793 ])
 794 ])
 795
 796 #
 797 # check for crypto API
 798 #
 799 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
 800 [AC_MSG_CHECKING([if kernel has block cipher support])
 801 LB_LINUX_TRY_COMPILE([
 802         #include <linux/err.h>
 803         #include <linux/crypto.h>
 804 ],[
 805         struct crypto_blkcipher *tfm;
 806         tfm = crypto_alloc_blkcipher("aes", 0, sizeof(tfm) );
 807 ],[
 808         AC_MSG_RESULT([yes])
 809         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
 810 ],[
 811         AC_MSG_RESULT([no])
 812 ])
 813 ])
 814
 815 #
 816 # check for struct hash_desc
 817 #
 818 AC_DEFUN([LC_STRUCT_HASH_DESC],
 819 [AC_MSG_CHECKING([if kernel has struct hash_desc])
 820 LB_LINUX_TRY_COMPILE([
 821         #include <linux/err.h>
 822         #include <linux/crypto.h>
 823 ],[
 824         struct hash_desc foo __attribute__ ((unused));
 825 ],[
 826         AC_MSG_RESULT([yes])
 827         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
 828 ],[
 829         AC_MSG_RESULT([no])
 830 ])
 831 ])
 832
 833 #
 834 # check for struct blkcipher_desc
 835 #
 836 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
 837 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
 838 LB_LINUX_TRY_COMPILE([
 839         #include <linux/err.h>
 840         #include <linux/crypto.h>
 841 ],[
 842         struct blkcipher_desc foo __attribute__ ((unused));
 843 ],[
 844         AC_MSG_RESULT([yes])
 845         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
 846 ],[
 847         AC_MSG_RESULT([no])
 848 ])
 849 ])
 850
 851 #
 852 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
 853 #
 854 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
 855 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
 856 LB_LINUX_TRY_COMPILE([
 857         #include <linux/fs.h>
 858 ],[
 859         int v __attribute__ ((unused));
 860         v = FS_RENAME_DOES_D_MOVE;
 861 ],[
 862         AC_MSG_RESULT([yes])
 863         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
 864 ],[
 865         AC_MSG_RESULT([no])
 866 ])
 867 ])
 868
 869 # 2.6.23
 870
 871 # 2.6.23 have return type 'void' for unregister_blkdev
 872 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
 873 [AC_MSG_CHECKING([if unregister_blkdev return int])
 874 LB_LINUX_TRY_COMPILE([
 875         #include <linux/fs.h>
 876 ],[
 877         int i __attribute__ ((unused));
 878         i = unregister_blkdev(0,NULL);
 879 ],[
 880         AC_MSG_RESULT([yes])
 881         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
 882                 [unregister_blkdev return int])
 883 ],[
 884         AC_MSG_RESULT([no])
 885 ])
 886 ])
 887
 888 # 2.6.23 change .sendfile to .splice_read
 889 AC_DEFUN([LC_KERNEL_SPLICE_READ],
 890 [AC_MSG_CHECKING([if kernel has .splice_read])
 891 LB_LINUX_TRY_COMPILE([
 892         #include <linux/fs.h>
 893 ],[
 894         struct file_operations file;
 895
 896         file.splice_read = NULL;
 897 ], [
 898         AC_MSG_RESULT([yes])
 899         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
 900                 [kernel has .slice_read])
 901 ],[
 902         AC_MSG_RESULT([no])
 903 ])
 904 ])
 905
 906 # 2.6.23 change .sendfile to .splice_read
 907 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
 908 AC_DEFUN([LC_KERNEL_SENDFILE],
 909 [AC_MSG_CHECKING([if kernel has .sendfile])
 910 LB_LINUX_TRY_COMPILE([
 911         #include <linux/fs.h>
 912 ],[
 913         struct file_operations file;
 914
 915         file.sendfile = NULL;
 916 ], [
 917         AC_MSG_RESULT([yes])
 918         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
 919                 [kernel has .sendfile])
 920 ],[
 921         AC_MSG_RESULT([no])
 922 ])
 923 ])
 924
 925 # 2.6.23 extract nfs export related data into exportfs.h
 926 AC_DEFUN([LC_HAVE_EXPORTFS_H],
 927 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
 928         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
 929                 [kernel has include/exportfs.h])
 930 ],[
 931         AC_MSG_RESULT([no])
 932 ])
 933 ])
 934
 935 # 2.6.23 has new page fault handling API
 936 AC_DEFUN([LC_VM_OP_FAULT],
 937 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
 938 LB_LINUX_TRY_COMPILE([
 939         #include <linux/mm.h>
 940 ],[
 941         struct vm_operations_struct op;
 942
 943         op.fault = NULL;
 944 ], [
 945         AC_MSG_RESULT([yes])
 946         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
 947                 [kernel has .fault in vm_operation_struct])
 948 ],[
 949         AC_MSG_RESULT([no])
 950 ])
 951 ])
 952
 953 # 2.6.23 add code to wait other users to complete before removing procfs entry
 954 AC_DEFUN([LC_PROCFS_USERS],
 955 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
 956 LB_LINUX_TRY_COMPILE([
 957         #include <linux/proc_fs.h>
 958 ],[
 959         struct proc_dir_entry pde;
 960
 961         pde.pde_users   = 0;
 962 ],[
 963         AC_MSG_RESULT([yes])
 964         AC_DEFINE(HAVE_PROCFS_USERS, 1,
 965                 [kernel has pde_users member in procfs entry struct])
 966 ],[
 967         AC_MSG_RESULT([no])
 968 ])
 969 ])
 970
 971 # 2.6.23 exports exportfs_decode_fh
 972 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
 973 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
 974 [fs/exportfs/expfs.c],[
 975         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
 976                 [exportfs_decode_fh has been export])
 977 ],[
 978 ])
 979 ])
 980
 981 # 2.6.24
 982
 983 # 2.6.24 need linux/mm_types.h included
 984 AC_DEFUN([LC_HAVE_MMTYPES_H],
 985 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
 986         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
 987                 [kernel has include/mm_types.h])
 988 ],[
 989         AC_MSG_RESULT([no])
 990 ])
 991 ])
 992
 993 # 2.6.24 has bio_endio with 2 args
 994 AC_DEFUN([LC_BIO_ENDIO_2ARG],
 995 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
 996 LB_LINUX_TRY_COMPILE([
 997         #include <linux/bio.h>
 998 ],[
 999         bio_endio(NULL, 0);
1000 ], [
1001         AC_MSG_RESULT([yes])
1002         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1003                 [kernel has bio_endio with 2 args])
1004 ],[
1005         AC_MSG_RESULT([no])
1006 ])
1007 ])
1008
1009 # 2.6.24 has new members in exports struct.
1010 AC_DEFUN([LC_FH_TO_DENTRY],
1011 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1012 LB_LINUX_TRY_COMPILE([
1013         #include <linux/fs.h>
1014 #ifdef HAVE_LINUX_EXPORTFS_H
1015         #include <linux/exportfs.h>
1016 #endif
1017 ],[
1018         do{ }while(sizeof(((struct export_operations *)0)->fh_to_dentry));
1019 ], [
1020         AC_MSG_RESULT([yes])
1021         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1022                 [kernel has .fh_to_dentry member in export_operations struct])
1023 ],[
1024         AC_MSG_RESULT([no])
1025 ])
1026 ])
1027
1028 # 2.6.24 removes long aged procfs entry -> deleted member
1029 AC_DEFUN([LC_PROCFS_DELETED],
1030 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1031 LB_LINUX_TRY_COMPILE([
1032         #include <linux/proc_fs.h>
1033 ],[
1034         struct proc_dir_entry pde;
1035
1036         pde.deleted = sizeof(pde);
1037 ], [
1038         AC_MSG_RESULT([yes])
1039         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1040                 [kernel has deleted member in procfs entry struct])
1041 ],[
1042         AC_MSG_RESULT([no])
1043 ])
1044 ])
1045
1046 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1047 AC_DEFUN([LC_EXPORT_BDI_INIT],
1048 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1049 [mm/backing-dev.c],[
1050         AC_DEFINE(HAVE_BDI_INIT, 1,
1051                 [bdi_init/bdi_destroy functions are present])
1052 ],[
1053 ])
1054 ])
1055
1056 # 2.6.26
1057
1058 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1059 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1060 [AC_MSG_CHECKING([fs_struct use path structure])
1061 LB_LINUX_TRY_COMPILE([
1062         #include <asm/atomic.h>
1063         #include <linux/spinlock.h>
1064         #include <linux/fs_struct.h>
1065 ],[
1066         struct fs_struct fs;
1067
1068         fs.pwd = *((struct path *)sizeof(fs));
1069 ], [
1070         AC_MSG_RESULT([yes])
1071         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1072                 [fs_struct use path structure])
1073 ],[
1074         AC_MSG_RESULT([no])
1075 ])
1076 ])
1077
1078
1079 #
1080 # 2.6.27
1081 #
1082
1083 # LC_SECURITY_PLUG  # for SLES10 SP2 (2.6.27)
1084 # check security plug in sles10 sp2 kernel
1085 AC_DEFUN([LC_SECURITY_PLUG],
1086 [AC_MSG_CHECKING([If kernel has security plug support])
1087 LB_LINUX_TRY_COMPILE([
1088         #include <linux/fs.h>
1089         #include <linux/stddef.h>
1090 ],[
1091         notify_change(NULL, NULL, NULL);
1092 ],[
1093         AC_MSG_RESULT(yes)
1094         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
1095                 [SLES10 SP2 use extra parameter in vfs])
1096 ],[
1097         AC_MSG_RESULT(no)
1098 ])
1099 ])
1100
1101 AC_DEFUN([LC_PGMKWRITE_USE_VMFAULT],
1102 [AC_MSG_CHECKING([kernel .page_mkwrite uses struct vm_fault *])
1103 tmp_flags="$EXTRA_KCFLAGS"
1104 EXTRA_KCFLAGS="-Werror"
1105 LB_LINUX_TRY_COMPILE([
1106         #include <linux/mm.h>
1107 ],[
1108         ((struct vm_operations_struct *)0)->page_mkwrite((struct vm_area_struct *)0, (struct vm_fault *)0);
1109 ], [
1110         AC_MSG_RESULT([yes])
1111         AC_DEFINE(HAVE_PGMKWRITE_USE_VMFAULT, 1,
1112                 [kernel vm_operation_struct.page_mkwrite uses struct vm_fault * as second parameter])
1113 ],[
1114         AC_MSG_RESULT([no])
1115 ])
1116 EXTRA_KCFLAGS="$tmp_flags"
1117 ])
1118
1119 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1120 [AC_MSG_CHECKING([inode_operations->permission has two args])
1121 LB_LINUX_TRY_COMPILE([
1122         #include <linux/fs.h>
1123 ],[
1124         struct inode *inode __attribute__ ((unused));
1125
1126         inode = NULL;
1127         inode->i_op->permission(NULL, 0);
1128 ],[
1129         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1130                   [inode_operations->permission has two args])
1131         AC_MSG_RESULT([yes])
1132 ],[
1133         AC_MSG_RESULT([no])
1134 ])
1135 ])
1136
1137 # 2.6.27 has file_remove_suid instead of remove_suid
1138 AC_DEFUN([LC_FILE_REMOVE_SUID],
1139 [AC_MSG_CHECKING([kernel has file_remove_suid])
1140 LB_LINUX_TRY_COMPILE([
1141         #include <linux/fs.h>
1142 ],[
1143         file_remove_suid(NULL);
1144 ],[
1145         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1146                   [kernel have file_remove_suid])
1147         AC_MSG_RESULT([yes])
1148 ],[
1149         AC_MSG_RESULT([no])
1150 ])
1151 ])
1152
1153 # 2.6.27 have new page locking API
1154 AC_DEFUN([LC_TRYLOCKPAGE],
1155 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1156 LB_LINUX_TRY_COMPILE([
1157         #include <linux/pagemap.h>
1158 ],[
1159         trylock_page(NULL);
1160 ],[
1161         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1162                   [kernel uses trylock_page for page lock])
1163         AC_MSG_RESULT([yes])
1164 ],[
1165         AC_MSG_RESULT([no])
1166 ])
1167 ])
1168
1169 # 2.6.27 removed the read_inode from super_operations.
1170 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1171 [AC_MSG_CHECKING([super_operations has a read_inode field])
1172 LB_LINUX_TRY_COMPILE([
1173         #include <linux/fs.h>
1174 ],[
1175         struct super_operations *sop;
1176         sop->read_inode(NULL);
1177 ],[
1178         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1179                 [super_operations has a read_inode])
1180         AC_MSG_RESULT([yes])
1181 ],[
1182         AC_MSG_RESULT([no])
1183 ])
1184 ])
1185
1186 # 2.6.27 has inode_permission instead of permisson
1187 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1188 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1189 [fs/namei.c],[
1190 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1191             [inode_permission is exported by the kernel])
1192 ],[
1193 ])
1194 ])
1195
1196 # 2.6.27 use 5th parameter in quota_on for remount.
1197 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1198 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1199 LB_LINUX_TRY_COMPILE([
1200         #include <linux/fs.h>
1201         #include <linux/quota.h>
1202 ],[
1203         struct quotactl_ops *qop = NULL;
1204         qop->quota_on(NULL, 0, 0, NULL, 0);
1205 ],[
1206         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1207                 [quota_on needs 5 paramters])
1208         AC_MSG_RESULT([yes])
1209 ],[
1210         AC_MSG_RESULT([no])
1211 ])
1212 ])
1213
1214 # 2.6.27 use 3th parameter in quota_off for remount.
1215 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1216 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1217 LB_LINUX_TRY_COMPILE([
1218         #include <linux/fs.h>
1219         #include <linux/quota.h>
1220 ],[
1221         struct quotactl_ops *qop = NULL;
1222         qop->quota_off(NULL, 0, 0);
1223 ],[
1224         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1225                 [quota_off needs 3 paramters])
1226         AC_MSG_RESULT([yes])
1227 ],[
1228         AC_MSG_RESULT([no])
1229 ])
1230 ])
1231
1232 # 2.6.27 has vfs_dq_off inline function.
1233 AC_DEFUN([LC_VFS_DQ_OFF],
1234 [AC_MSG_CHECKING([vfs_dq_off is defined])
1235 LB_LINUX_TRY_COMPILE([
1236         #include <linux/quotaops.h>
1237 ],[
1238         vfs_dq_off(NULL, 0);
1239 ],[
1240         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1241         AC_MSG_RESULT([yes])
1242 ],[
1243         AC_MSG_RESULT([no])
1244 ])
1245 ])
1246
1247 # LC_LOCK_MAP_ACQUIRE
1248 # after 2.6.27 lock_map_acquire replaces lock_acquire
1249 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1250 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1251 LB_LINUX_TRY_COMPILE([
1252         #include <linux/lockdep.h>
1253 ],[
1254         lock_map_acquire(NULL);
1255 ],[
1256         AC_MSG_RESULT(yes)
1257         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1258                 [lock_map_acquire is defined])
1259 ],[
1260         AC_MSG_RESULT(no)
1261 ])
1262 ])
1263
1264 # 2.6.27.15-2 sles11
1265
1266 # 2.6.27 sles11 remove the bi_hw_segments
1267 AC_DEFUN([LC_BI_HW_SEGMENTS],
1268 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1269 LB_LINUX_TRY_COMPILE([
1270         #include <linux/bio.h>
1271 ],[
1272         struct bio io;
1273         io.bi_hw_segments = sizeof(io);
1274 ],[
1275         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1276                 [struct bio has a bi_hw_segments field])
1277         AC_MSG_RESULT([yes])
1278 ],[
1279         AC_MSG_RESULT([no])
1280 ])
1281 ])
1282
1283 #
1284 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1285 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1286 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1287 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1288         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1289                 [kernel has include/linux/quotaio_v2.h])
1290 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1291                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1292                 [kernel has fs/quotaio_v1.h])
1293 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1294                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1295                 [kernel has fs/quota/quotaio_v2.h])
1296 ],[
1297         AC_MSG_RESULT([no])
1298 ])
1299 ])
1300 ])
1301 ])
1302
1303 # 2.6.27 sles11 has sb_any_quota_active
1304 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1305 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1306 LB_LINUX_TRY_COMPILE([
1307         #include <linux/quotaops.h>
1308 ],[
1309         sb_any_quota_active(NULL);
1310 ],[
1311         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1312                 [Kernel has a sb_any_quota_active])
1313         AC_MSG_RESULT([yes])
1314 ],[
1315         AC_MSG_RESULT([no])
1316 ])
1317 ])
1318
1319 # 2.6.27 sles11 has sb_has_quota_active
1320 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1321 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1322 LB_LINUX_TRY_COMPILE([
1323         #include <linux/quotaops.h>
1324 ],[
1325         sb_has_quota_active(NULL, 0);
1326 ],[
1327         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1328                 [Kernel has a sb_has_quota_active])
1329         AC_MSG_RESULT([yes])
1330 ],[
1331         AC_MSG_RESULT([no])
1332 ])
1333 ])
1334
1335 # 2.6.27 exported add_to_page_cache_lru.
1336 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1337 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1338 [mm/filemap.c],[
1339         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1340                 [add_to_page_cache_lru functions are present])
1341 ],[
1342 ])
1343 ])
1344
1345 #
1346 # 2.6.29 introduce sb_any_quota_loaded.
1347 #
1348 AC_DEFUN([LC_SB_ANY_QUOTA_LOADED],
1349 [AC_MSG_CHECKING([Kernel has sb_any_quota_loaded])
1350 LB_LINUX_TRY_COMPILE([
1351         #include <linux/quotaops.h>
1352 ],[
1353         sb_any_quota_loaded(NULL);
1354 ],[
1355         AC_DEFINE(HAVE_SB_ANY_QUOTA_LOADED, 1,
1356                 [Kernel has a sb_any_quota_loaded])
1357         AC_MSG_RESULT([yes])
1358 ],[
1359         AC_MSG_RESULT([no])
1360 ])
1361 ])
1362
1363 # 2.6.30 x86 node_to_cpumask has been removed. must use cpumask_of_node
1364 AC_DEFUN([LC_EXPORT_CPUMASK_OF_NODE],
1365          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask_map],
1366                                  [arch/$LINUX_ARCH/mm/numa.c],
1367                                  [AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1,
1368                                             [node_to_cpumask_map is exported by
1369                                              the kernel])]) # x86_64
1370          ])
1371
1372 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1373 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1374 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1375 LB_LINUX_TRY_COMPILE([
1376         #include <linux/blkdev.h>
1377 ],[
1378         blk_queue_logical_block_size(NULL, 0);
1379 ],[
1380         AC_MSG_RESULT(yes)
1381         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1382                   [blk_queue_logical_block_size is defined])
1383 ],[
1384         AC_MSG_RESULT(no)
1385 ])
1386 ])
1387
1388 # 2.6.32
1389
1390 # 2.6.32 changes cache_detail's member cache_request to cache_upcall
1391 # in kernel commit bc74b4f5e63a09fb78e245794a0de1e5a2716bbe
1392 AC_DEFUN([LC_CACHE_UPCALL],
1393 [AC_MSG_CHECKING([if cache_detail has cache_upcall field])
1394         LB_LINUX_TRY_COMPILE([
1395                 #include <linux/sunrpc/cache.h>
1396         ],[
1397                 struct cache_detail cd;
1398                 cd.cache_upcall = NULL;
1399         ],[
1400                 AC_MSG_RESULT(yes)
1401                 AC_DEFINE(HAVE_CACHE_UPCALL, 1,
1402                           [cache_detail has cache_upcall field])
1403         ],[
1404                 AC_MSG_RESULT(no)
1405         ])
1406 ])
1407
1408 # 2.6.32 add a limits member in struct request_queue.
1409 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1410 [AC_MSG_CHECKING([if request_queue has a limits field])
1411 LB_LINUX_TRY_COMPILE([
1412         #include <linux/blkdev.h>
1413 ],[
1414         struct request_queue rq;
1415         rq.limits.io_min = 0;
1416 ],[
1417         AC_MSG_RESULT(yes)
1418         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1419                   [request_queue has a limits field])
1420 ],[
1421         AC_MSG_RESULT(no)
1422 ])
1423 ])
1424
1425 # 2.6.32 has bdi_register() functions.
1426 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1427 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1428 [mm/backing-dev.c],[
1429         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1430                 [bdi_register function is present])
1431 ],[
1432 ])
1433 ])
1434
1435 # 2.6.32 add s_bdi for super block
1436 AC_DEFUN([LC_SB_BDI],
1437 [AC_MSG_CHECKING([if super_block has s_bdi field])
1438 LB_LINUX_TRY_COMPILE([
1439         #include <linux/fs.h>
1440 ],[
1441         struct super_block sb;
1442         sb.s_bdi = NULL;
1443 ],[
1444         AC_MSG_RESULT(yes)
1445         AC_DEFINE(HAVE_SB_BDI, 1,
1446                   [super_block has s_bdi field])
1447 ],[
1448         AC_MSG_RESULT(no)
1449 ])
1450 ])
1451
1452 #  2.6.27.15-2 SuSE 11 sp0 kernels lack the name field for BDI
1453 AC_DEFUN([LC_BDI_NAME],
1454 [AC_MSG_CHECKING([if backing_device_info has name field])
1455 LB_LINUX_TRY_COMPILE([
1456         #include <linux/blkkdev.h>
1457 ],[
1458         struct backing_dev_info bdi;
1459         bdi.name = NULL;
1460 ],[
1461         AC_MSG_RESULT(yes)
1462         AC_DEFINE(HAVE_BDI_NAME, 1,
1463                   [backing_device_info has name field])
1464 ],[
1465         AC_MSG_RESULT(no)
1466 ])
1467 ])
1468
1469 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1470 # check blk_queue_max_sectors and use it until disappear.
1471 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
1472 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
1473 LB_LINUX_TRY_COMPILE([
1474         #include <linux/blkdev.h>
1475 ],[
1476         blk_queue_max_sectors(NULL, 0);
1477 ],[
1478         AC_MSG_RESULT(yes)
1479         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
1480                   [blk_queue_max_sectors is defined])
1481 ],[
1482         AC_MSG_RESULT(no)
1483 ])
1484 ])
1485
1486 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
1487 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
1488 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
1489 LB_LINUX_TRY_COMPILE([
1490         #include <linux/blkdev.h>
1491 ],[
1492         blk_queue_max_segments(NULL, 0);
1493 ],[
1494         AC_MSG_RESULT(yes)
1495         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
1496                   [blk_queue_max_segments is defined])
1497 ],[
1498         AC_MSG_RESULT(no)
1499 ])
1500 ])
1501
1502 #
1503 # LC_QUOTA64
1504 #
1505 # Check if kernel has been patched for 64-bit quota limits support.
1506 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
1507 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
1508 # that in the absence of quotaio_v1.h in the kernel headers.
1509 #
1510 AC_DEFUN([LC_QUOTA64],[
1511         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
1512 tmp_flags="$EXTRA_KCFLAGS"
1513 EXTRA_KCFLAGS="-I$LINUX/fs"
1514         LB_LINUX_TRY_COMPILE([
1515                 #include <linux/kernel.h>
1516                 #include <linux/fs.h>
1517                 #ifdef HAVE_QUOTAIO_H
1518                 # include <linux/quotaio_v2.h>
1519                 int versions[] = V2_INITQVERSIONS_R1;
1520                 struct v2_disk_dqblk_r1 dqblk_r1;
1521                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
1522                 # include <quota/quotaio_v2.h>
1523                 struct v2r1_disk_dqblk dqblk_r1;
1524                 #elif defined(HAVE_FS_QUOTAIO_H)
1525                 # include <quotaio_v2.h>
1526                 struct v2r1_disk_dqblk dqblk_r1;
1527                 #else
1528                 #include <linux/quota.h>
1529                 int ver = QFMT_VFS_V1;
1530                 #endif
1531         ],[],[
1532                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
1533                 AC_MSG_RESULT([yes])
1534         ],[
1535                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
1536                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
1537                 ],[])
1538                 AC_MSG_RESULT([no])
1539         ])
1540 EXTRA_KCFLAGS=$tmp_flags
1541 ])
1542
1543 # 2.6.32 set_cpus_allowed is no more defined if CONFIG_CPUMASK_OFFSTACK=yes
1544 AC_DEFUN([LC_SET_CPUS_ALLOWED],
1545          [AC_MSG_CHECKING([if kernel defines set_cpus_allowed])
1546           LB_LINUX_TRY_COMPILE(
1547                 [#include <linux/sched.h>],
1548                 [struct task_struct *p = NULL;
1549                  cpumask_t mask = { { 0 } };
1550                  (void) set_cpus_allowed(p, mask);],
1551                 [AC_MSG_RESULT([yes])
1552                  AC_DEFINE(HAVE_SET_CPUS_ALLOWED, 1,
1553                            [set_cpus_allowed is exported by the kernel])],
1554                 [AC_MSG_RESULT([no])] )])
1555
1556 # 2.6.32 introduces selinux_is_enabled()
1557 AC_DEFUN([LC_SELINUX_IS_ENABLED],
1558 [AC_MSG_CHECKING([if selinux_is_enabled is available])
1559 LB_LINUX_TRY_COMPILE([
1560         #include <linux/selinux.h>
1561 ],[
1562         selinux_is_enabled();
1563 ],[
1564         AC_MSG_RESULT([yes])
1565         AC_DEFINE(HAVE_SELINUX_IS_ENABLED, 1,
1566                 [selinux_is_enabled is defined])
1567 ],[
1568         AC_MSG_RESULT([no])
1569 ])
1570 ])
1571
1572 #
1573 # LC_D_OBTAIN_ALIAS
1574 # starting from 2.6.28 kernel replaces d_alloc_anon() with
1575 # d_obtain_alias() for getting anonymous dentries
1576 # RHEL5(2.6.18) has d_obtain_alias but SLES11SP0(2.6.27) not
1577 #
1578 AC_DEFUN([LC_D_OBTAIN_ALIAS],
1579 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
1580 LB_LINUX_TRY_COMPILE([
1581         #include <linux/dcache.h>
1582 ],[
1583         d_obtain_alias(NULL);
1584 ],[
1585         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
1586                 [d_obtain_alias exist in kernel])
1587         AC_MSG_RESULT([yes])
1588 ],[
1589         AC_MSG_RESULT([no])
1590 ])
1591 ])
1592
1593 #
1594 # LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
1595 #
1596 AC_DEFUN([LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE],
1597          [LB_CHECK_SYMBOL_EXPORT(
1598                         [generic_error_remove_page],
1599                         [mm/truncate.c],
1600                         [AC_DEFINE(HAS_GENERIC_ERROR_REMOVE_PAGE, 1,
1601                                 [kernel export generic_error_remove_page])],
1602                         [])
1603          ]
1604 )
1605
1606 # 2.6.32 if kernel export access_process_vm().
1607 AC_DEFUN([LC_EXPORT_ACCESS_PROCESS_VM],
1608         [LB_CHECK_SYMBOL_EXPORT([access_process_vm],
1609                         [mm/memory.c],
1610                         [AC_DEFINE(HAVE_ACCESS_PROCESS_VM, 1,
1611                                 [access_process_vm function is present])],
1612                         [])
1613         ]
1614 )
1615
1616 #
1617 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
1618 #
1619 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
1620 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
1621 LB_LINUX_TRY_COMPILE([
1622         #include <asm/atomic.h>
1623         #include <linux/spinlock.h>
1624         #include <linux/fs_struct.h>
1625 ],[
1626         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
1627 ],[
1628         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
1629                   [fs_struct.lock use rwlock])
1630         AC_MSG_RESULT([yes])
1631 ],[
1632         AC_MSG_RESULT([no])
1633 ])
1634 ])
1635
1636 #
1637 # 2.6.36 super_operations add evict_inode method. it hybird of
1638 # delete_inode & clear_inode.
1639 #
1640 AC_DEFUN([LC_SBOPS_EVICT_INODE],
1641 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
1642 LB_LINUX_TRY_COMPILE([
1643         #include <linux/fs.h>
1644 ],[
1645         ((struct super_operations *)0)->evict_inode(NULL);
1646 ],[
1647         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
1648                 [super_operations.evict_inode() is exist in kernel])
1649         AC_MSG_RESULT([yes])
1650 ],[
1651         AC_MSG_RESULT([no])
1652 ])
1653 ])
1654
1655 #
1656 # 2.6.35 file_operations.fsync taken 2 arguments.
1657 # 3.0.0 file_operations.fsync takes 4 arguments.
1658 #
1659 AC_DEFUN([LC_FILE_FSYNC],
1660 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
1661 LB_LINUX_TRY_COMPILE([
1662         #include <linux/fs.h>
1663 ],[
1664         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
1665 ],[
1666         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
1667                 [file_operations.fsync takes 4 arguments])
1668         AC_MSG_RESULT([yes, 4 args])
1669 ],[
1670         LB_LINUX_TRY_COMPILE([
1671                 #include <linux/fs.h>
1672         ],[
1673            ((struct file_operations *)0)->fsync(NULL, 0);
1674         ],[
1675                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
1676                         [file_operations.fsync takes 2 arguments])
1677                 AC_MSG_RESULT([yes, 2 args])
1678         ],[
1679                 AC_MSG_RESULT([no])
1680         ])
1681 ])
1682 ])
1683
1684 #
1685 # 2.6.37 remove kernel_locked
1686 #
1687 AC_DEFUN([LC_KERNEL_LOCKED],
1688 [AC_MSG_CHECKING([if kernel_locked is defined])
1689 LB_LINUX_TRY_COMPILE([
1690         #include <linux/smp_lock.h>
1691 ],[
1692         kernel_locked();
1693 ],[
1694         AC_MSG_RESULT([yes])
1695         AC_DEFINE(HAVE_KERNEL_LOCKED, 1,
1696                 [kernel_locked is defined])
1697 ],[
1698         AC_MSG_RESULT([no])
1699 ])
1700 ])
1701
1702 #
1703 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
1704 #
1705 AC_DEFUN([LC_D_COMPARE_7ARGS],
1706 [AC_MSG_CHECKING([if d_compare taken 7 arguments])
1707 LB_LINUX_TRY_COMPILE([
1708         #include <linux/dcache.h>
1709 ],[
1710         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
1711 ],[
1712         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1,
1713                 [d_compare need 7 arguments])
1714         AC_MSG_RESULT([yes])
1715 ],[
1716         AC_MSG_RESULT([no])
1717 ])
1718 ])
1719
1720 #
1721 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
1722 #
1723 AC_DEFUN([LC_D_DELETE_CONST],
1724 [AC_MSG_CHECKING([if d_delete has const declare on first parameter])
1725 tmp_flags="$EXTRA_KCFLAGS"
1726 EXTRA_KCFLAGS="-Werror"
1727 LB_LINUX_TRY_COMPILE([
1728         #include <linux/dcache.h>
1729 ],[
1730         const struct dentry *d = NULL;
1731         ((struct dentry_operations*)0)->d_delete(d);
1732 ],[
1733         AC_DEFINE(HAVE_D_DELETE_CONST, const,
1734                 [d_delete first parameter declared const])
1735         AC_MSG_RESULT([yes])
1736 ],[
1737         AC_DEFINE(HAVE_D_DELETE_CONST, , [])
1738         AC_MSG_RESULT([no])
1739 ])
1740 EXTRA_KCFLAGS="$tmp_flags"
1741 ])
1742
1743 #
1744 # 2.6.38 dcache_lock removed. rcu-walk commited.
1745 #
1746 AC_DEFUN([LC_DCACHE_LOCK],
1747 [AC_MSG_CHECKING([if dcache_lock is exist])
1748 LB_LINUX_TRY_COMPILE([
1749         #include <linux/dcache.h>
1750 ],[
1751         spin_lock(&dcache_lock);
1752 ],[
1753         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
1754                 [dcache_lock is exist])
1755         AC_MSG_RESULT([yes])
1756 ],[
1757         AC_MSG_RESULT([no])
1758 ])
1759 ])
1760
1761 #
1762 # 2.6.38 export blkdev_get_by_dev
1763 #
1764 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
1765 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
1766 [fs/block_dev.c],[
1767 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
1768             [blkdev_get_by_dev is exported by the kernel])
1769 ],[
1770 ])
1771 ])
1772
1773 #
1774 # 2.6.38 vfsmount.mnt_count doesn't use atomic_t
1775 #
1776 AC_DEFUN([LC_ATOMIC_MNT_COUNT],
1777 [AC_MSG_CHECKING([if vfsmount.mnt_count is atomic_t])
1778 LB_LINUX_TRY_COMPILE([
1779         #include <asm/atomic.h>
1780         #include <linux/fs.h>
1781         #include <linux/mount.h>
1782 ],[
1783         ((struct vfsmount *)0)->mnt_count = ((atomic_t) { 0 });
1784 ],[
1785         AC_DEFINE(HAVE_ATOMIC_MNT_COUNT, 1,
1786                 [vfsmount.mnt_count is atomic_t])
1787         AC_MSG_RESULT([yes])
1788 ],[
1789         AC_MSG_RESULT([no])
1790 ])
1791 ])
1792
1793 #
1794 # 2.6.38 use path as 4th parameter in quota_on.
1795 #
1796 AC_DEFUN([LC_QUOTA_ON_USE_PATH],
1797 [AC_MSG_CHECKING([quota_on use path as parameter])
1798 tmp_flags="$EXTRA_KCFLAGS"
1799 EXTRA_KCFLAGS="-Werror"
1800 LB_LINUX_TRY_COMPILE([
1801         #include <linux/fs.h>
1802         #include <linux/quota.h>
1803 ],[
1804         ((struct quotactl_ops *)0)->quota_on(NULL, 0, 0, ((struct path*)0));
1805 ],[
1806         AC_DEFINE(HAVE_QUOTA_ON_USE_PATH, 1,
1807                 [quota_on use path as 4th paramter])
1808         AC_MSG_RESULT([yes])
1809 ],[
1810         AC_MSG_RESULT([no])
1811 ])
1812 EXTRA_KCFLAGS="$tmp_flags"
1813 ])
1814
1815 #
1816 # 2.6.39 remove unplug_fn from request_queue.
1817 #
1818 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
1819 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
1820 LB_LINUX_TRY_COMPILE([
1821         #include <linux/blkdev.h>
1822 ],[
1823         do{ }while(sizeof(((struct request_queue *)0)->unplug_fn));
1824 ],[
1825         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
1826                   [request_queue has unplug_fn field])
1827         AC_MSG_RESULT([yes])
1828 ],[
1829         AC_MSG_RESULT([no])
1830 ])
1831 ])
1832
1833 #
1834 # 2.6.38 generic_permission taken 4 paremater.
1835 # in fact, it means rcu-walk aware permission bring.
1836 #
1837 AC_DEFUN([LC_GENERIC_PERMISSION],
1838 [AC_MSG_CHECKING([if generic_permission take 4 arguments])
1839 LB_LINUX_TRY_COMPILE([
1840         #include <linux/fs.h>
1841 ],[
1842         generic_permission(NULL, 0, 0, NULL);
1843 ],[
1844         AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
1845                   [generic_permission taken 4 arguments])
1846         AC_MSG_RESULT([yes])
1847 ],[
1848         AC_MSG_RESULT([no])
1849 ])
1850 ])
1851
1852 #
1853 # 2.6.38 export simple_setattr
1854 #
1855 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
1856 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
1857 [fs/libfs.c],[
1858 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
1859             [simple_setattr is exported by the kernel])
1860 ],[
1861 ])
1862 ])
1863
1864 #
1865 # LC_PROG_LINUX
1866 #
1867 # Lustre linux kernel checks
1868 #
1869 AC_DEFUN([LC_PROG_LINUX],
1870          [
1871          LC_CONFIG_PINGER
1872          LC_CONFIG_CHECKSUM
1873          LC_CONFIG_LIBLUSTRE_RECOVERY
1874          LC_CONFIG_HEALTH_CHECK_WRITE
1875          LC_CONFIG_LRU_RESIZE
1876          LC_LLITE_LLOOP_MODULE
1877
1878          # RHEL4 patches
1879          LC_EXPORT_TRUNCATE_COMPLETE
1880          LC_EXPORT_D_REHASH_COND
1881          LC_EXPORT___D_REHASH
1882          LC_EXPORT_NODE_TO_CPUMASK
1883
1884          LC_FILEMAP_POPULATE
1885          LC_BIT_SPINLOCK_H
1886
1887          LC_CONST_ACL_SIZE
1888
1889          LC_CAPA_CRYPTO
1890          LC_CONFIG_RMTCLIENT
1891          LC_CONFIG_GSS
1892          LC_TASK_CLENV_STORE
1893
1894          # 2.6.12
1895          LC_RW_TREE_LOCK
1896
1897          # 2.6.18
1898          LC_NR_PAGECACHE
1899          LC_STATFS_DENTRY_PARAM
1900          LC_UMOUNTBEGIN_HAS_VFSMOUNT
1901          LC_FLUSH_OWNER_ID
1902          if test x$enable_server = xyes ; then
1903                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
1904          fi
1905
1906          #2.6.18 + RHEL5 (fc6)
1907          LC_PG_FS_MISC
1908          LC_PAGE_CHECKED
1909          LC_LINUX_FIEMAP_H
1910
1911          # 2.6.19
1912          LC_INODE_BLKSIZE
1913          LC_FILE_WRITEV
1914          LC_FILE_READV
1915
1916          # 2.6.20
1917          LC_CANCEL_DIRTY_PAGE
1918
1919          # raid5-zerocopy patch
1920          LC_PAGE_CONSTANT
1921
1922          # 2.6.22
1923          LC_INVALIDATE_BDEV_2ARG
1924          LC_ASYNC_BLOCK_CIPHER
1925          LC_STRUCT_HASH_DESC
1926          LC_STRUCT_BLKCIPHER_DESC
1927          LC_FS_RENAME_DOES_D_MOVE
1928
1929          # 2.6.23
1930          LC_UNREGISTER_BLKDEV_RETURN_INT
1931          LC_KERNEL_SPLICE_READ
1932          LC_KERNEL_SENDFILE
1933          LC_HAVE_EXPORTFS_H
1934          LC_VM_OP_FAULT
1935          LC_PROCFS_USERS
1936          LC_EXPORTFS_DECODE_FH
1937
1938          # 2.6.24
1939          LC_HAVE_MMTYPES_H
1940          LC_BIO_ENDIO_2ARG
1941          LC_FH_TO_DENTRY
1942          LC_PROCFS_DELETED
1943          LC_EXPORT_BDI_INIT
1944
1945          # 2.6.26
1946          LC_FS_STRUCT_USE_PATH
1947
1948          # 2.6.27
1949          LC_SECURITY_PLUG  # for SLES10 SP2
1950          LC_PGMKWRITE_USE_VMFAULT
1951          LC_INODE_PERMISION_2ARGS
1952          LC_FILE_REMOVE_SUID
1953          LC_TRYLOCKPAGE
1954          LC_READ_INODE_IN_SBOPS
1955          LC_EXPORT_INODE_PERMISSION
1956          LC_QUOTA_ON_5ARGS
1957          LC_QUOTA_OFF_3ARGS
1958          LC_VFS_DQ_OFF
1959          LC_LOCK_MAP_ACQUIRE
1960
1961          # 2.6.27.15-2 sles11
1962          LC_BI_HW_SEGMENTS
1963          LC_HAVE_QUOTAIO_H
1964          LC_BDI_NAME
1965          LC_SB_ANY_QUOTA_ACTIVE
1966          LC_SB_HAS_QUOTA_ACTIVE
1967          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
1968
1969          # 2.6.29
1970          LC_SB_ANY_QUOTA_LOADED
1971
1972          # 2.6.30
1973          LC_EXPORT_CPUMASK_OF_NODE
1974
1975          # 2.6.31
1976          LC_BLK_QUEUE_LOG_BLK_SIZE
1977
1978          # 2.6.32
1979          LC_REQUEST_QUEUE_LIMITS
1980          LC_EXPORT_BDI_REGISTER
1981          LC_SB_BDI
1982          LC_BLK_QUEUE_MAX_SECTORS
1983          LC_BLK_QUEUE_MAX_SEGMENTS
1984          LC_SET_CPUS_ALLOWED
1985          LC_CACHE_UPCALL
1986          LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
1987          LC_SELINUX_IS_ENABLED
1988          LC_EXPORT_ACCESS_PROCESS_VM
1989
1990          # 2.6.35, 3.0.0
1991          LC_FILE_FSYNC
1992          LC_EXPORT_SIMPLE_SETATTR
1993
1994          # 2.6.36
1995          LC_FS_STRUCT_RWLOCK
1996          LC_SBOPS_EVICT_INODE
1997
1998          # 2.6.37
1999          LC_KERNEL_LOCKED
2000
2001          # 2.6.38
2002          LC_ATOMIC_MNT_COUNT
2003          LC_BLKDEV_GET_BY_DEV
2004          LC_GENERIC_PERMISSION
2005          LC_QUOTA_ON_USE_PATH
2006          LC_DCACHE_LOCK
2007          LC_D_COMPARE_7ARGS
2008          LC_D_DELETE_CONST
2009
2010          # 2.6.39
2011          LC_REQUEST_QUEUE_UNPLUG_FN
2012
2013          #
2014          if test x$enable_server = xyes ; then
2015              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2016              LC_FUNC_DEV_SET_RDONLY
2017              LC_STACK_SIZE
2018              LC_QUOTA64
2019              LC_QUOTA_CONFIG
2020          fi
2021 ])
2022
2023 #
2024 # LC_CONFIG_CLIENT_SERVER
2025 #
2026 # Build client/server sides of Lustre
2027 #
2028 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2029 [AC_MSG_CHECKING([whether to build Lustre server support])
2030 AC_ARG_ENABLE([server],
2031         AC_HELP_STRING([--disable-server],
2032                         [disable Lustre server support]),
2033         [],[enable_server='yes'])
2034 AC_MSG_RESULT([$enable_server])
2035
2036 AC_MSG_CHECKING([whether to build Lustre client support])
2037 AC_ARG_ENABLE([client],
2038         AC_HELP_STRING([--disable-client],
2039                         [disable Lustre client support]),
2040         [],[enable_client='yes'])
2041 AC_MSG_RESULT([$enable_client])])
2042
2043 #
2044 # LC_CONFIG_LIBLUSTRE
2045 #
2046 # whether to build liblustre
2047 #
2048 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2049 [AC_MSG_CHECKING([whether to build Lustre library])
2050 AC_ARG_ENABLE([liblustre],
2051         AC_HELP_STRING([--disable-liblustre],
2052                         [disable building of Lustre library]),
2053         [],[enable_liblustre=$with_sysio])
2054 AC_MSG_RESULT([$enable_liblustre])
2055 # only build sysio if liblustre is built
2056 with_sysio="$enable_liblustre"
2057
2058 AC_MSG_CHECKING([whether to build liblustre tests])
2059 AC_ARG_ENABLE([liblustre-tests],
2060         AC_HELP_STRING([--enable-liblustre-tests],
2061                         [enable liblustre tests, if --disable-tests is used]),
2062         [],[enable_liblustre_tests=$enable_tests])
2063 if test x$enable_liblustre != xyes ; then
2064    enable_liblustre_tests='no'
2065 fi
2066 AC_MSG_RESULT([$enable_liblustre_tests])
2067
2068 AC_MSG_CHECKING([whether to enable liblustre acl])
2069 AC_ARG_ENABLE([liblustre-acl],
2070         AC_HELP_STRING([--disable-liblustre-acl],
2071                         [disable ACL support for liblustre]),
2072         [],[enable_liblustre_acl=yes])
2073 AC_MSG_RESULT([$enable_liblustre_acl])
2074 if test x$enable_liblustre_acl = xyes ; then
2075   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2076 fi
2077
2078 # 2.6.29 change prepare/commit_write to write_begin/end
2079 AC_DEFUN([LC_WRITE_BEGIN_END],
2080 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2081 LB_LINUX_TRY_COMPILE([
2082         #include <linux/fs.h>
2083         #include <linux/pagemap.h>
2084 #ifdef HAVE_LINUX_MMTYPES_H
2085         #include <linux/mm_types.h>
2086 #endif
2087 ],[
2088         struct address_space_operations aops;
2089         struct page *page;
2090
2091         aops.write_begin = NULL;
2092         aops.write_end = NULL;
2093         page = grab_cache_page_write_begin(NULL, 0, 0);
2094 ], [
2095         AC_MSG_RESULT([yes])
2096         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2097                 [kernel has .write_begin/end])
2098 ],[
2099         AC_MSG_RESULT([no])
2100 ])
2101 ])
2102
2103 # 2.6.29 blkdev_put has 2 arguments
2104 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2105 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2106 LB_LINUX_TRY_COMPILE([
2107         #include <linux/fs.h>
2108 ],[
2109         blkdev_put(NULL, 0);
2110 ],[
2111         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2112                 [blkdev_put needs 2 paramters])
2113         AC_MSG_RESULT([yes])
2114 ],[
2115         AC_MSG_RESULT([no])
2116 ])
2117 ])
2118
2119 # 2.6.29 dentry_open has 4 arguments
2120 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2121 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2122 LB_LINUX_TRY_COMPILE([
2123         #include <linux/fs.h>
2124 ],[
2125         dentry_open(NULL, NULL, 0, NULL);
2126 ],[
2127         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2128                 [dentry_open needs 4 paramters])
2129         AC_MSG_RESULT([yes])
2130 ],[
2131         AC_MSG_RESULT([no])
2132 ])
2133 ])
2134
2135 # 2.6.29 split file and anonymous page queues
2136 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2137 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2138 LB_LINUX_TRY_COMPILE([
2139         #include <linux/mm.h>
2140         #include <linux/pagevec.h>
2141 ],[
2142         struct pagevec lru_pagevec;
2143
2144         pagevec_init(&lru_pagevec, 0);
2145         pagevec_lru_add_file(&lru_pagevec);
2146 ],[
2147         AC_MSG_RESULT([yes])
2148         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2149                 [kernel has .pagevec_lru_add_file])
2150 ],[
2151         AC_MSG_RESULT([no])
2152 ])
2153 ])
2154
2155 #
2156 # --enable-mpitest
2157 #
2158 AC_ARG_ENABLE(mpitests,
2159         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2160                            [include mpi tests]),
2161         [
2162          enable_mpitests=yes
2163          case $enableval in
2164          yes)
2165                 MPICC_WRAPPER=mpicc
2166                 ;;
2167          no)
2168                 enable_mpitests=no
2169                 ;;
2170          *)
2171                 MPICC_WRAPPER=$enableval
2172                  ;;
2173          esac
2174         ],
2175         [
2176         MPICC_WRAPPER=mpicc
2177         enable_mpitests=yes
2178         ]
2179 )
2180
2181 if test x$enable_mpitests != xno; then
2182         AC_MSG_CHECKING([whether mpitests can be built])
2183         oldcc=$CC
2184         CC=$MPICC_WRAPPER
2185         AC_LINK_IFELSE(
2186             [AC_LANG_PROGRAM([[
2187                     #include <mpi.h>
2188                 ]],[[
2189                     int flag;
2190                     MPI_Initialized(&flag);
2191                 ]])],
2192             [
2193                     AC_MSG_RESULT([yes])
2194             ],[
2195                     AC_MSG_RESULT([no])
2196                     enable_mpitests=no
2197         ])
2198         CC=$oldcc
2199 fi
2200 AC_SUBST(MPICC_WRAPPER)
2201
2202 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2203 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2204
2205 LC_CONFIG_PINGER
2206 LC_CONFIG_LIBLUSTRE_RECOVERY
2207 ])
2208
2209 #
2210 # LC_CONFIG_QUOTA
2211 #
2212 # whether to enable quota support global control
2213 #
2214 AC_DEFUN([LC_CONFIG_QUOTA],
2215 [AC_ARG_ENABLE([quota],
2216         AC_HELP_STRING([--enable-quota],
2217                         [enable quota support]),
2218         [],[enable_quota='yes'])
2219 ])
2220
2221 AC_DEFUN([LC_QUOTA],
2222 [#check global
2223 LC_CONFIG_QUOTA
2224 #check for utils
2225 AC_CHECK_HEADER(sys/quota.h,
2226                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2227                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2228 ])
2229
2230 #
2231 # LC_CONFIG_SPLIT
2232 #
2233 # whether to enable split support
2234 #
2235 AC_DEFUN([LC_CONFIG_SPLIT],
2236 [AC_MSG_CHECKING([whether to enable split support])
2237 AC_ARG_ENABLE([split],
2238         AC_HELP_STRING([--enable-split],
2239                         [enable split support]),
2240         [],[enable_split='no'])
2241 AC_MSG_RESULT([$enable_split])
2242 if test x$enable_split != xno; then
2243    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2244 fi
2245 ])
2246
2247 # RHEL5(2.6.18) has tux_info
2248 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2249 [AC_MSG_CHECKING([tux_info])
2250 LB_LINUX_TRY_COMPILE([
2251         #include <linux/sched.h>
2252 ],[
2253         struct task_struct task;
2254         &task.tux_info;
2255 ],[
2256         AC_MSG_RESULT([yes])
2257         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2258         have_task_clenv_store='yes'
2259 ],[
2260         AC_MSG_RESULT([no])
2261 ])
2262 ])
2263
2264 #
2265 # LC_LLITE_LLOOP_MODULE
2266 # lloop_llite.ko does not currently work with page sizes
2267 # of 64k or larger.
2268 #
2269 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2270 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2271 LB_LINUX_TRY_COMPILE([
2272         #include <asm/page.h>
2273 ],[
2274         #if PAGE_SIZE >= 65536
2275         #error "PAGE_SIZE >= 65536"
2276         #endif
2277 ],[
2278         enable_llite_lloop_module='yes'
2279         AC_MSG_RESULT([yes])
2280 ],[
2281         enable_llite_lloop_module='no'
2282         AC_MSG_RESULT([no])
2283 ])
2284 ])
2285
2286 #
2287 # LC_CONFIGURE
2288 #
2289 # other configure checks
2290 #
2291 AC_DEFUN([LC_CONFIGURE],
2292 [LC_CONFIG_OBD_BUFFER_SIZE
2293
2294 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2295         CFLAGS="$CFLAGS -Werror"
2296 fi
2297
2298 # maximum MDS thread count
2299 LC_MDS_MAX_THREADS
2300
2301 # include/liblustre.h
2302 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2303
2304 # liblustre/llite_lib.h
2305 AC_CHECK_HEADERS([xtio.h file.h])
2306
2307 # liblustre/dir.c
2308 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2309
2310 # liblustre/lutil.c
2311 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2312 AC_CHECK_FUNCS([inet_ntoa])
2313
2314 # libsysio/src/readlink.c
2315 LC_READLINK_SSIZE_T
2316
2317 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2318 AC_CHECK_HEADERS([linux/random.h], [], [],
2319                  [#ifdef HAVE_LINUX_TYPES_H
2320                   # include <linux/types.h>
2321                   #endif
2322                  ])
2323
2324 # utils/llverfs.c
2325 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2326
2327 # check for -lz support
2328 ZLIB=""
2329 AC_CHECK_LIB([z],
2330              [adler32],
2331              [AC_CHECK_HEADERS([zlib.h],
2332                                [ZLIB="-lz"
2333                                 AC_DEFINE([HAVE_ADLER], 1,
2334                                           [support alder32 checksum type])],
2335                                [AC_MSG_WARN([No zlib-devel package found,
2336                                              unable to use adler32 checksum])])],
2337              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2338 )
2339 AC_SUBST(ZLIB)
2340
2341 # Super safe df
2342 AC_ARG_ENABLE([mindf],
2343       AC_HELP_STRING([--enable-mindf],
2344                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2345       [],[])
2346 if test "$enable_mindf" = "yes" ;  then
2347       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2348 fi
2349
2350 AC_ARG_ENABLE([fail_alloc],
2351         AC_HELP_STRING([--disable-fail-alloc],
2352                 [disable randomly alloc failure]),
2353         [],[enable_fail_alloc=yes])
2354 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2355 AC_MSG_RESULT([$enable_fail_alloc])
2356 if test x$enable_fail_alloc != xno ; then
2357         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2358 fi
2359
2360 AC_ARG_ENABLE([invariants],
2361         AC_HELP_STRING([--enable-invariants],
2362                 [enable invariant checking (cpu intensive)]),
2363         [],[])
2364 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2365 AC_MSG_RESULT([$enable_invariants])
2366 if test x$enable_invariants = xyes ; then
2367         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2368 fi
2369
2370 AC_ARG_ENABLE([lu_ref],
2371         AC_HELP_STRING([--enable-lu_ref],
2372                 [enable lu_ref reference tracking code]),
2373         [],[])
2374 AC_MSG_CHECKING([whether to track references with lu_ref])
2375 AC_MSG_RESULT([$enable_lu_ref])
2376 if test x$enable_lu_ref = xyes ; then
2377         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2378 fi
2379
2380 AC_ARG_ENABLE([pgstate-track],
2381               AC_HELP_STRING([--enable-pgstate-track],
2382                              [enable page state tracking]),
2383               [enable_pgstat_track='yes'],[])
2384 AC_MSG_CHECKING([whether to enable page state tracking])
2385 AC_MSG_RESULT([$enable_pgstat_track])
2386 if test x$enable_pgstat_track = xyes ; then
2387         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2388                   [enable page state tracking code])
2389 fi
2390
2391          #2.6.29
2392          LC_WRITE_BEGIN_END
2393          LC_D_OBTAIN_ALIAS
2394          LC_BLKDEV_PUT_2ARGS
2395          LC_DENTRY_OPEN_4ARGS
2396          LC_PAGEVEC_LRU_ADD_FILE
2397
2398 ])
2399
2400 #
2401 # LC_CONDITIONALS
2402 #
2403 # AM_CONDITIONALS for lustre
2404 #
2405 AC_DEFUN([LC_CONDITIONALS],
2406 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2407 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2408 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2409 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2410 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2411 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2412 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2413 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2414 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2415 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2416 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2417 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2418 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2419 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2420 ])
2421
2422 #
2423 # LC_CONFIG_FILES
2424 #
2425 # files that should be generated with AC_OUTPUT
2426 #
2427 AC_DEFUN([LC_CONFIG_FILES],
2428 [AC_CONFIG_FILES([
2429 lustre/Makefile
2430 lustre/autoMakefile
2431 lustre/autoconf/Makefile
2432 lustre/conf/Makefile
2433 lustre/contrib/Makefile
2434 lustre/doc/Makefile
2435 lustre/include/Makefile
2436 lustre/include/lustre_ver.h
2437 lustre/include/linux/Makefile
2438 lustre/include/darwin/Makefile
2439 lustre/include/lustre/Makefile
2440 lustre/kernel_patches/targets/2.6-rhel6.target
2441 lustre/kernel_patches/targets/2.6-rhel5.target
2442 lustre/kernel_patches/targets/2.6-sles10.target
2443 lustre/kernel_patches/targets/2.6-sles11.target
2444 lustre/kernel_patches/targets/2.6-oel5.target
2445 lustre/kernel_patches/targets/2.6-fc11.target
2446 lustre/kernel_patches/targets/2.6-fc12.target
2447 lustre/ldlm/Makefile
2448 lustre/fid/Makefile
2449 lustre/fid/autoMakefile
2450 lustre/liblustre/Makefile
2451 lustre/liblustre/tests/Makefile
2452 lustre/liblustre/tests/mpi/Makefile
2453 lustre/llite/Makefile
2454 lustre/llite/autoMakefile
2455 lustre/lclient/Makefile
2456 lustre/lov/Makefile
2457 lustre/lov/autoMakefile
2458 lustre/lvfs/Makefile
2459 lustre/lvfs/autoMakefile
2460 lustre/mdc/Makefile
2461 lustre/mdc/autoMakefile
2462 lustre/lmv/Makefile
2463 lustre/lmv/autoMakefile
2464 lustre/mds/Makefile
2465 lustre/mds/autoMakefile
2466 lustre/mdt/Makefile
2467 lustre/mdt/autoMakefile
2468 lustre/cmm/Makefile
2469 lustre/cmm/autoMakefile
2470 lustre/mdd/Makefile
2471 lustre/mdd/autoMakefile
2472 lustre/fld/Makefile
2473 lustre/fld/autoMakefile
2474 lustre/obdclass/Makefile
2475 lustre/obdclass/autoMakefile
2476 lustre/obdclass/linux/Makefile
2477 lustre/obdecho/Makefile
2478 lustre/obdecho/autoMakefile
2479 lustre/obdfilter/Makefile
2480 lustre/obdfilter/autoMakefile
2481 lustre/ofd/Makefile
2482 lustre/ofd/autoMakefile
2483 lustre/osc/Makefile
2484 lustre/osc/autoMakefile
2485 lustre/ost/Makefile
2486 lustre/ost/autoMakefile
2487 lustre/osd-ldiskfs/Makefile
2488 lustre/osd-ldiskfs/autoMakefile
2489 lustre/osd-zfs/Makefile
2490 lustre/osd-zfs/autoMakefile
2491 lustre/mgc/Makefile
2492 lustre/mgc/autoMakefile
2493 lustre/mgs/Makefile
2494 lustre/mgs/autoMakefile
2495 lustre/ptlrpc/Makefile
2496 lustre/ptlrpc/autoMakefile
2497 lustre/ptlrpc/gss/Makefile
2498 lustre/ptlrpc/gss/autoMakefile
2499 lustre/quota/Makefile
2500 lustre/quota/autoMakefile
2501 lustre/scripts/Makefile
2502 lustre/scripts/lustre
2503 lustre/tests/Makefile
2504 lustre/tests/mpi/Makefile
2505 lustre/utils/Makefile
2506 lustre/utils/gss/Makefile
2507 lustre/obdclass/darwin/Makefile
2508 ])
2509 ])