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, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
  68 ])
  69
  70 #
  71 # LC_READLINK_SSIZE_T
  72 #
  73 AC_DEFUN([LC_READLINK_SSIZE_T],
  74 [AC_MSG_CHECKING([if readlink returns ssize_t])
  75 AC_TRY_COMPILE([
  76         #include <unistd.h>
  77 ],[
  78         ssize_t readlink(const char *, char *, size_t);
  79 ],[
  80         AC_MSG_RESULT([yes])
  81         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
  82 ],[
  83         AC_MSG_RESULT([no])
  84 ])
  85 ])
  86
  87 #
  88 # LC_FUNC_RELEASEPAGE_WITH_GFP
  89 #
  90 # 2.6.9 ->releasepage() takes a gfp_t arg
  91 # This kernel defines gfp_t (HAS_GFP_T) but doesn't use it for this function,
  92 # while others either don't have gfp_t or pass gfp_t as the parameter.
  93 #
  94 AC_DEFUN([LC_FUNC_RELEASEPAGE_WITH_GFP],
  95 [AC_MSG_CHECKING([if releasepage has a gfp_t parameter])
  96 RELEASEPAGE_WITH_GFP="$(grep -c 'releasepage.*gfp_t' $LINUX/include/linux/fs.h)"
  97 if test "$RELEASEPAGE_WITH_GFP" != 0 ; then
  98         AC_DEFINE(HAVE_RELEASEPAGE_WITH_GFP, 1,
  99                   [releasepage with gfp_t parameter])
 100         AC_MSG_RESULT([yes])
 101 else
 102         AC_MSG_RESULT([no])
 103 fi
 104 ])
 105
 106
 107
 108 #
 109 # only for Lustre-patched kernels
 110 #
 111 AC_DEFUN([LC_LUSTRE_VERSION_H],
 112 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 113         rm -f "$LUSTRE/include/linux/lustre_version.h"
 114 ],[
 115         touch "$LUSTRE/include/linux/lustre_version.h"
 116         if test x$enable_server = xyes ; then
 117                 AC_MSG_WARN([Unpatched kernel detected.])
 118                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
 119                 AC_MSG_WARN([disabling server build])
 120                 enable_server='no'
 121         fi
 122 ])
 123 ])
 124
 125 #
 126 # LC_FUNC_DEV_SET_RDONLY
 127 #
 128 # check for the old-style dev_set_rdonly which took an extra "devno" param
 129 # and can only set a single device to discard writes at one time
 130 #
 131 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
 132 [AC_MSG_CHECKING([if kernel has new dev_set_rdonly])
 133 LB_LINUX_TRY_COMPILE([
 134         #include <linux/fs.h>
 135         #include <linux/blkdev.h>
 136 ],[
 137         #ifndef HAVE_CLEAR_RDONLY_ON_PUT
 138         #error needs to be patched by lustre kernel patches from Lustre version 1.4.3 or above.
 139         #endif
 140 ],[
 141         AC_MSG_RESULT([yes])
 142         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel has new dev_set_rdonly])
 143 ],[
 144         AC_MSG_ERROR([no, Linux kernel source needs to be patches by lustre
 145 kernel patches from Lustre version 1.4.3 or above.])
 146 ])
 147 ])
 148
 149 #
 150 # Ensure stack size big than 8k in Lustre server (all kernels)
 151 #
 152 AC_DEFUN([LC_STACK_SIZE],
 153 [AC_MSG_CHECKING([stack size big than 8k])
 154 LB_LINUX_TRY_COMPILE([
 155         #include <linux/thread_info.h>
 156 ],[
 157         #if THREAD_SIZE < 8192
 158         #error "stack size < 8192"
 159         #endif
 160 ],[
 161         AC_MSG_RESULT(yes)
 162 ],[
 163         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
 164 ])
 165 ])
 166
 167 #
 168 # Allow the user to set the MDS thread upper limit
 169 #
 170 AC_DEFUN([LC_MDS_MAX_THREADS],
 171 [
 172         AC_ARG_WITH([mds_max_threads],
 173         AC_HELP_STRING([--with-mds-max-threads=size],
 174                         [define the maximum number of threads available on the MDS: (default=512)]),
 175         [
 176                 MDS_THREAD_COUNT=$with_mds_max_threads
 177                 AC_DEFINE_UNQUOTED(MDT_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of mdt threads])
 178         ])
 179 ])
 180
 181 #
 182 # LC_CONFIG_PINGER
 183 #
 184 # the pinger is temporary, until we have the recovery node in place
 185 #
 186 AC_DEFUN([LC_CONFIG_PINGER],
 187 [AC_MSG_CHECKING([whether to enable pinger support])
 188 AC_ARG_ENABLE([pinger],
 189         AC_HELP_STRING([--disable-pinger],
 190                         [disable recovery pinger support]),
 191         [],[enable_pinger='yes'])
 192 AC_MSG_RESULT([$enable_pinger])
 193 if test x$enable_pinger != xno ; then
 194   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 195 fi
 196 ])
 197
 198 #
 199 # LC_CONFIG_CHECKSUM
 200 #
 201 # do checksum of bulk data between client and OST
 202 #
 203 AC_DEFUN([LC_CONFIG_CHECKSUM],
 204 [AC_MSG_CHECKING([whether to enable data checksum support])
 205 AC_ARG_ENABLE([checksum],
 206        AC_HELP_STRING([--disable-checksum],
 207                        [disable data checksum support]),
 208        [],[enable_checksum='yes'])
 209 AC_MSG_RESULT([$enable_checksum])
 210 if test x$enable_checksum != xno ; then
 211   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 212 fi
 213 ])
 214
 215 #
 216 # LC_CONFIG_LIBLUSTRE_RECOVERY
 217 #
 218 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 219 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 220 AC_ARG_ENABLE([liblustre-recovery],
 221         AC_HELP_STRING([--disable-liblustre-recovery],
 222                         [disable liblustre recovery support]),
 223         [],[enable_liblustre_recovery='yes'])
 224 AC_MSG_RESULT([$enable_liblustre_recovery])
 225 if test x$enable_liblustre_recovery != xno ; then
 226   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 227 fi
 228 ])
 229
 230 #
 231 # LC_CONFIG_HEALTH_CHECK_WRITE
 232 #
 233 # Turn off the actual write to the disk
 234 #
 235 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 236 [AC_MSG_CHECKING([whether to enable a write with the health check])
 237 AC_ARG_ENABLE([health_write],
 238         AC_HELP_STRING([--enable-health_write],
 239                         [enable disk writes when doing health check]),
 240         [],[enable_health_write='no'])
 241 AC_MSG_RESULT([$enable_health_write])
 242 if test x$enable_health_write != xno ; then
 243   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 244 fi
 245 ])
 246
 247 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
 248 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
 249 AC_ARG_ENABLE([lru_resize],
 250         AC_HELP_STRING([--enable-lru-resize],
 251                         [enable lru resize support]),
 252         [],[enable_lru_resize='yes'])
 253 AC_MSG_RESULT([$enable_lru_resize])
 254 if test x$enable_lru_resize != xno; then
 255    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 256 fi
 257 ])
 258
 259 # whether to enable quota support(kernel modules)
 260 AC_DEFUN([LC_QUOTA_MODULE],
 261 [if test x$enable_quota != xno; then
 262     LB_LINUX_CONFIG([QUOTA],[
 263         enable_quota_module='yes'
 264         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
 265     ],[
 266         enable_quota_module='no'
 267         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
 268     ])
 269 fi
 270 ])
 271
 272 # truncate_complete_page() was exported from RHEL5/SLES10/SLES11
 273 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 274 # delete_from_page_cache() is exported from 2.6.39
 275 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 276          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 277                                  [mm/truncate.c],
 278                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 279                                             [kernel export truncate_complete_page])])
 280           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
 281                                  [mm/filemap.c],
 282                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 283                                             [kernel export remove_from_page_cache])])
 284           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
 285                                  [mm/filemap.c],
 286                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 287                                             [kernel export delete_from_page_cache])])
 288          ])
 289
 290 AC_DEFUN([LC_EXPORT_TRUNCATE_RANGE],
 291 [LB_CHECK_SYMBOL_EXPORT([truncate_inode_pages_range],
 292 [mm/truncate.c],[
 293 AC_DEFINE(HAVE_TRUNCATE_RANGE, 1,
 294             [kernel export truncate_inode_pages_range])
 295 ],[
 296 ])
 297 ])
 298
 299 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
 300 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
 301 [fs/dcache.c],[
 302 AC_DEFINE(HAVE_D_REHASH_COND, 1,
 303             [d_rehash_cond is exported by the kernel])
 304 ],[
 305 ])
 306 ])
 307
 308 AC_DEFUN([LC_EXPORT___D_REHASH],
 309 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
 310 [fs/dcache.c],[
 311 AC_DEFINE(HAVE___D_REHASH, 1,
 312             [__d_rehash is exported by the kernel])
 313 ],[
 314 ])
 315 ])
 316
 317 # The actual symbol exported varies among architectures, so we need
 318 # to check many symbols (but only in the current architecture.)  No
 319 # matter what symbol is exported, the kernel #defines node_to_cpumask
 320 # to the appropriate function and that's what we use.
 321 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
 322          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
 323                                  [arch/$LINUX_ARCH/mm/numa.c],
 324                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 325                                             [node_to_cpumask is exported by
 326                                              the kernel])]) # x86_64
 327           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
 328                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 329                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 330                                             [node_to_cpumask is exported by
 331                                              the kernel])]) # ia64
 332           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
 333                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 334                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 335                                             [node_to_cpumask is exported by
 336                                              the kernel])]) # i386
 337           ])
 338
 339 #
 340 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
 341 #
 342 # Check for our patched grab_cache_page_nowait_gfp() function
 343 # after 2.6.29 we can emulate this using add_to_page_cache_lru()
 344 #
 345 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
 346 [LB_CHECK_SYMBOL_EXPORT([grab_cache_page_nowait_gfp],
 347 [mm/filemap.c],[
 348         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
 349                   [kernel exports grab_cache_page_nowait_gfp])
 350         ],
 351         [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
 352         [mm/filemap.c],[
 353                 AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
 354                         [kernel exports add_to_page_cache_lru])
 355         ],[
 356         ])
 357         ])
 358 ])
 359
 360 #
 361 # LC_STRUCT_STATFS
 362 #
 363 # AIX does not have statfs.f_namelen
 364 #
 365 AC_DEFUN([LC_STRUCT_STATFS],
 366 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
 367 LB_LINUX_TRY_COMPILE([
 368         #include <linux/vfs.h>
 369 ],[
 370         struct statfs sfs;
 371         sfs.f_namelen = 1;
 372 ],[
 373         AC_MSG_RESULT([yes])
 374         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
 375 ],[
 376         AC_MSG_RESULT([no])
 377 ])
 378 ])
 379
 380 #
 381 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
 382 #
 383 AC_DEFUN([LC_FILEMAP_POPULATE],
 384 [AC_MSG_CHECKING([for exported filemap_populate])
 385 LB_LINUX_TRY_COMPILE([
 386         #include <asm/page.h>
 387         #include <linux/mm.h>
 388 ],[
 389        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 390 ],[
 391         AC_MSG_RESULT([yes])
 392         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 393 ],[
 394         AC_MSG_RESULT([no])
 395 ])
 396 ])
 397
 398 #
 399 # added in 2.6.15
 400 #
 401 AC_DEFUN([LC_D_ADD_UNIQUE],
 402 [AC_MSG_CHECKING([for d_add_unique])
 403 LB_LINUX_TRY_COMPILE([
 404         #include <linux/dcache.h>
 405 ],[
 406        d_add_unique(NULL, NULL);
 407 ],[
 408         AC_MSG_RESULT([yes])
 409         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
 410 ],[
 411         AC_MSG_RESULT([no])
 412 ])
 413 ])
 414
 415 #
 416 # added in 2.6.17
 417 #
 418 AC_DEFUN([LC_BIT_SPINLOCK_H],
 419 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 420         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 421         LB_LINUX_TRY_COMPILE([
 422                 #include <asm/processor.h>
 423                 #include <linux/spinlock.h>
 424                 #include <linux/bit_spinlock.h>
 425         ],[],[
 426                 AC_MSG_RESULT([yes])
 427                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 428         ],[
 429                 AC_MSG_RESULT([no])
 430         ])
 431 ],
 432 [])
 433 ])
 434
 435 #
 436 # After 2.6.26 we no longer have xattr_acl.h
 437 #
 438 AC_DEFUN([LC_XATTR_ACL],
 439 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
 440         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 441         LB_LINUX_TRY_COMPILE([
 442                 #include <linux/xattr_acl.h>
 443         ],[],[
 444                 AC_MSG_RESULT([yes])
 445                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 446         ],[
 447                 AC_MSG_RESULT([no])
 448         ])
 449 ],
 450 [])
 451 ])
 452
 453 #
 454 # After 2.6.16 the xattr_acl API is removed, and posix_acl is used instead
 455 #
 456 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
 457 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
 458         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
 459         LB_LINUX_TRY_COMPILE([
 460                 #include <linux/fs.h>
 461                 #include <linux/posix_acl_xattr.h>
 462         ],[],[
 463                 AC_MSG_RESULT([yes])
 464                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 465
 466         ],[
 467                 AC_MSG_RESULT([no])
 468         ])
 469 $1
 470 ],[
 471         AC_MSG_RESULT([no])
 472 ])
 473 ])
 474
 475 AC_DEFUN([LC_CONST_ACL_SIZE],
 476 [AC_MSG_CHECKING([calc acl size])
 477 tmp_flags="$CFLAGS"
 478 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"
 479 AC_TRY_RUN([
 480         #define __KERNEL__
 481         #include <linux/types.h>
 482         #undef __KERNEL__
 483         // block include
 484         #define __LINUX_POSIX_ACL_H
 485
 486         # ifdef CONFIG_FS_POSIX_ACL
 487         #  ifdef HAVE_XATTR_ACL
 488         #   include <linux/xattr_acl.h>
 489         #  endif
 490         #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
 491         #   include <linux/posix_acl_xattr.h>
 492         #  endif
 493         # endif
 494
 495         #include <lustre_acl.h>
 496
 497         #include <stdio.h>
 498
 499         int main(void)
 500         {
 501             int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
 502             FILE *f = fopen("acl.size","w+");
 503             fprintf(f,"%d", size);
 504             fclose(f);
 505
 506             return 0;
 507         }
 508 ],[
 509         acl_size=`cat acl.size`
 510         AC_MSG_RESULT([ACL size $acl_size])
 511         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
 512 ],[
 513         AC_ERROR([ACL size can't computed])
 514 ])
 515 CFLAGS="$tmp_flags"
 516 ])
 517
 518 # added in 2.6.16
 519 #
 520 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 521 [AC_MSG_CHECKING([if struct open_intent has a file field])
 522 LB_LINUX_TRY_COMPILE([
 523         #include <linux/fs.h>
 524         #include <linux/namei.h>
 525 ],[
 526         struct open_intent intent;
 527         &intent.file;
 528 ],[
 529         AC_MSG_RESULT([yes])
 530         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 531 ],[
 532         AC_MSG_RESULT([no])
 533 ])
 534 ])
 535
 536 #
 537 # LC_CAPA_CRYPTO
 538 #
 539 AC_DEFUN([LC_CAPA_CRYPTO],
 540 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 541         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 542 ])
 543 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 544         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 545 ])
 546 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 547         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 548 ])
 549 ])
 550
 551 #
 552 # LC_CONFIG_RMTCLIENT
 553 #
 554 dnl FIXME
 555 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 556 dnl FIXME
 557 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 558 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 559         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 560 ])
 561 ])
 562
 563 #
 564 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 565 #
 566 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 567 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 568  AC_ARG_ENABLE([gss_keyring],
 569                [AC_HELP_STRING([--disable-gss-keyring],
 570                                [disable gss keyring backend])],
 571                [],[enable_gss_keyring='yes'])
 572  AC_MSG_RESULT([$enable_gss_keyring])
 573
 574  if test x$enable_gss_keyring != xno; then
 575         LB_LINUX_CONFIG_IM([KEYS],[],
 576                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 577
 578         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 579                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 580
 581         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 582                   [Define this if you enable gss keyring backend])
 583  fi
 584 ])
 585
 586 AC_DEFUN([LC_SUNRPC_CACHE],
 587 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 588 LB_LINUX_TRY_COMPILE([
 589         #include <linux/sunrpc/cache.h>
 590 ],[
 591         struct cache_head ch;
 592         &ch.ref.refcount;
 593 ],[
 594         AC_MSG_RESULT([yes])
 595         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 596 ],[
 597         AC_MSG_RESULT([no])
 598 ])
 599 ])
 600
 601 AC_DEFUN([LC_CONFIG_SUNRPC],
 602 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 603                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 604  LC_SUNRPC_CACHE
 605 ])
 606
 607 #
 608 # LC_CONFIG_GSS (default disabled)
 609 #
 610 # Build gss and related tools of Lustre. Currently both kernel and user space
 611 # parts are depend on linux platform.
 612 #
 613 AC_DEFUN([LC_CONFIG_GSS],
 614 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 615  AC_ARG_ENABLE([gss],
 616                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 617                [],[enable_gss='no'])
 618  AC_MSG_RESULT([$enable_gss])
 619
 620  if test x$enable_gss == xyes; then
 621         LC_CONFIG_GSS_KEYRING
 622         LC_CONFIG_SUNRPC
 623
 624         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 625
 626         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 627                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 628         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 629                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 630         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 631                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 632         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 633                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 634
 635         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 636                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 637                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 638                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 639                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 640
 641         AC_SUBST(GSSAPI_LIBS)
 642
 643         AC_KERBEROS_V5
 644  fi
 645 ])
 646
 647 #
 648 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 649 #
 650 # 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
 651 #
 652 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 653 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 654 LB_LINUX_TRY_COMPILE([
 655         #include <linux/fs.h>
 656 ],[
 657         int cansleep;
 658         struct file *file;
 659         struct file_lock *file_lock;
 660         flock_lock_file_wait(file, file_lock, cansleep);
 661 ],[
 662         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 663                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 664         AC_MSG_RESULT([yes])
 665 ],[
 666         AC_MSG_RESULT([no])
 667 ])
 668 ])
 669
 670 #
 671 # LC_FUNC_F_OP_FLOCK
 672 #
 673 # rhel4.2 kernel has f_op->flock field
 674 #
 675 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 676 [AC_MSG_CHECKING([if struct file_operations has flock field])
 677 LB_LINUX_TRY_COMPILE([
 678         #include <linux/fs.h>
 679 ],[
 680         struct file_operations ll_file_operations_flock;
 681         ll_file_operations_flock.flock = NULL;
 682 ],[
 683         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 684                 [struct file_operations has flock field])
 685         AC_MSG_RESULT([yes])
 686 ],[
 687         AC_MSG_RESULT([no])
 688 ])
 689 ])
 690
 691 AC_DEFUN([LC_QUOTA_READ],
 692 [AC_MSG_CHECKING([if kernel supports quota_read])
 693 LB_LINUX_TRY_COMPILE([
 694         #include <linux/fs.h>
 695 ],[
 696         struct super_operations sp;
 697         void *i = (void *)sp.quota_read;
 698 ],[
 699         AC_MSG_RESULT([yes])
 700         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
 701 ],[
 702         AC_MSG_RESULT([no])
 703 ])
 704 ])
 705
 706 #
 707 # LC_COOKIE_FOLLOW_LINK
 708 #
 709 # kernel 2.6.13+ ->follow_link returns a cookie
 710 #
 711
 712 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
 713 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
 714 LB_LINUX_TRY_COMPILE([
 715         #include <linux/fs.h>
 716         #include <linux/namei.h>
 717 ],[
 718         struct dentry dentry;
 719         struct nameidata nd;
 720
 721         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
 722 ],[
 723         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
 724         AC_MSG_RESULT([yes])
 725 ],[
 726         AC_MSG_RESULT([no])
 727 ])
 728 ])
 729
 730 #
 731 # LC_FUNC_RCU
 732 #
 733 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
 734 # call_rcu takes three parameters.
 735 #
 736 AC_DEFUN([LC_FUNC_RCU],
 737 [AC_MSG_CHECKING([if kernel have RCU supported])
 738 LB_LINUX_TRY_COMPILE([
 739         #include <linux/rcupdate.h>
 740 ],[],[
 741         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
 742         AC_MSG_RESULT([yes])
 743
 744         AC_MSG_CHECKING([if call_rcu takes three parameters])
 745         LB_LINUX_TRY_COMPILE([
 746                 #include <linux/rcupdate.h>
 747         ],[
 748                 struct rcu_head rh;
 749                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
 750         ],[
 751                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
 752                 AC_MSG_RESULT([yes])
 753         ],[
 754                 AC_MSG_RESULT([no])
 755         ])
 756
 757 ],[
 758         AC_MSG_RESULT([no])
 759 ])
 760 ])
 761
 762 AC_DEFUN([LC_PERCPU_COUNTER],
 763 [AC_MSG_CHECKING([if have struct percpu_counter defined])
 764 LB_LINUX_TRY_COMPILE([
 765         #include <linux/percpu_counter.h>
 766 ],[],[
 767         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
 768         AC_MSG_RESULT([yes])
 769
 770         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
 771         LB_LINUX_TRY_COMPILE([
 772                 #include <linux/percpu_counter.h>
 773         ],[
 774                 struct percpu_counter c;
 775                 percpu_counter_init(&c, 0);
 776         ],[
 777                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
 778                                                    arguments])
 779                 AC_MSG_RESULT([yes])
 780         ],[
 781                 AC_MSG_RESULT([no])
 782         ])
 783 ],[
 784         AC_MSG_RESULT([no])
 785 ])
 786 ])
 787
 788 AC_DEFUN([LC_TASK_CLENV_STORE],
 789 [
 790         AC_MSG_CHECKING([if we can store cl_env in task_struct])
 791         if test x$have_task_clenv_store != xyes ; then
 792                 LC_TASK_CLENV_TUX_INFO
 793         fi
 794 ])
 795
 796 # ~2.6.11
 797
 798 AC_DEFUN([LC_S_TIME_GRAN],
 799 [AC_MSG_CHECKING([if super block has s_time_gran member])
 800 LB_LINUX_TRY_COMPILE([
 801         #include <linux/fs.h>
 802 ],[
 803         struct super_block sb;
 804
 805         return sb.s_time_gran;
 806 ],[
 807         AC_MSG_RESULT([yes])
 808         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
 809 ],[
 810         AC_MSG_RESULT([no])
 811 ])
 812 ])
 813
 814 AC_DEFUN([LC_SB_TIME_GRAN],
 815 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
 816 LB_LINUX_TRY_COMPILE([
 817         #include <linux/fs.h>
 818 ],[
 819         return get_sb_time_gran(NULL);
 820 ],[
 821         AC_MSG_RESULT([yes])
 822         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
 823 ],[
 824         AC_MSG_RESULT([no])
 825 ])
 826 ])
 827
 828 # 2.6.12
 829
 830 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
 831 AC_DEFUN([LC_RW_TREE_LOCK],
 832 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
 833 tmp_flags="$EXTRA_KCFLAGS"
 834 EXTRA_KCFLAGS="-Werror"
 835 LB_LINUX_TRY_COMPILE([
 836         #include <linux/fs.h>
 837 ],[
 838         struct address_space a;
 839
 840         write_lock(&a.tree_lock);
 841 ],[
 842         AC_MSG_RESULT([yes])
 843         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
 844 ],[
 845         AC_MSG_RESULT([no])
 846 ])
 847 EXTRA_KCFLAGS="$tmp_flags"
 848 ])
 849
 850 # LC_EXPORT_SYNCHRONIZE_RCU
 851 # after 2.6.12 synchronize_rcu is preferred over synchronize_kernel
 852 AC_DEFUN([LC_EXPORT_SYNCHRONIZE_RCU],
 853 [LB_CHECK_SYMBOL_EXPORT([synchronize_rcu],
 854 [kernel/rcupdate.c],[
 855         AC_DEFINE(HAVE_SYNCHRONIZE_RCU, 1,
 856                 [in 2.6.12 synchronize_rcu preferred over synchronize_kernel])
 857 ],[
 858 ])
 859 ])
 860
 861 # 2.6.15
 862
 863 # LC_INODE_I_MUTEX
 864 # after 2.6.15 inode have i_mutex intead of i_sem
 865 AC_DEFUN([LC_INODE_I_MUTEX],
 866 [AC_MSG_CHECKING([if inode has i_mutex ])
 867 LB_LINUX_TRY_COMPILE([
 868         #include <linux/mutex.h>
 869         #include <linux/fs.h>
 870         #undef i_mutex
 871 ],[
 872         struct inode i;
 873
 874         mutex_unlock(&i.i_mutex);
 875 ],[
 876         AC_MSG_RESULT(yes)
 877         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 878                 [after 2.6.15 inode have i_mutex intead of i_sem])
 879 ],[
 880         AC_MSG_RESULT(no)
 881 ])
 882 ])
 883
 884 # 2.6.16
 885
 886 # LC_SECURITY_PLUG  # for SLES10 SP2
 887 # check security plug in sles10 sp2 kernel
 888 AC_DEFUN([LC_SECURITY_PLUG],
 889 [AC_MSG_CHECKING([If kernel has security plug support])
 890 LB_LINUX_TRY_COMPILE([
 891         #include <linux/fs.h>
 892 ],[
 893         struct dentry   *dentry;
 894         struct vfsmount *mnt;
 895         struct iattr    *iattr;
 896
 897         notify_change(dentry, mnt, iattr);
 898 ],[
 899         AC_MSG_RESULT(yes)
 900         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
 901                 [SLES10 SP2 use extra parameter in vfs])
 902 ],[
 903         AC_MSG_RESULT(no)
 904 ])
 905 ])
 906
 907 # 2.6.17
 908
 909 # inode have i_private field since 2.6.17
 910 AC_DEFUN([LC_INODE_IPRIVATE],
 911 [AC_MSG_CHECKING([if inode has a i_private field])
 912 LB_LINUX_TRY_COMPILE([
 913 #include <linux/fs.h>
 914 ],[
 915         struct inode i;
 916         i.i_private = NULL;
 917 ],[
 918         AC_MSG_RESULT(yes)
 919         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
 920                 [struct inode has i_private field])
 921 ],[
 922         AC_MSG_RESULT(no)
 923 ])
 924 ])
 925
 926 # LC_DQUOTOFF_MUTEX
 927 # after 2.6.17 dquote use mutex instead if semaphore
 928 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 929 [AC_MSG_CHECKING([use dqonoff_mutex])
 930 LB_LINUX_TRY_COMPILE([
 931         #include <linux/mutex.h>
 932         #include <linux/fs.h>
 933         #include <linux/quota.h>
 934 ],[
 935         struct quota_info dq;
 936
 937         mutex_unlock(&dq.dqonoff_mutex);
 938 ],[
 939         AC_MSG_RESULT(yes)
 940         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 941                 [after 2.6.17 dquote use mutex instead if semaphore])
 942 ],[
 943         AC_MSG_RESULT(no)
 944 ])
 945 ])
 946
 947 # 2.6.18
 948
 949 # LC_NR_PAGECACHE
 950 # 2.6.18 don't export nr_pagecahe
 951 AC_DEFUN([LC_NR_PAGECACHE],
 952 [AC_MSG_CHECKING([kernel export nr_pagecache])
 953 LB_LINUX_TRY_COMPILE([
 954         #include <linux/pagemap.h>
 955 ],[
 956         return atomic_read(&nr_pagecache);
 957 ],[
 958         AC_MSG_RESULT(yes)
 959         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 960                 [is kernel export nr_pagecache])
 961 ],[
 962         AC_MSG_RESULT(no)
 963 ])
 964 ])
 965
 966 #
 967 # LC_STATFS_DENTRY_PARAM
 968 # starting from 2.6.18 linux kernel uses dentry instead of super_block
 969 # for the first parameter of the super_operations->statfs() callback.
 970 #
 971 #
 972 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 973 [AC_MSG_CHECKING([if super_ops.statfs() first parameter is dentry])
 974 tmp_flags="$EXTRA_KCFLAGS"
 975 EXTRA_KCFLAGS="-Werror"
 976 LB_LINUX_TRY_COMPILE([
 977         #include <linux/fs.h>
 978 ],[
 979         struct super_operations *sop = NULL;
 980         sop->statfs((struct dentry *)0, (struct kstatfs*)0);
 981 ],[
 982         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 983                 [super_ops.statfs() first parameter is dentry])
 984         AC_MSG_RESULT([yes])
 985 ],[
 986         AC_MSG_RESULT([no])
 987 ])
 988 EXTRA_KCFLAGS="$tmp_flags"
 989 ])
 990
 991 #
 992 # LC_VFS_KERN_MOUNT
 993 # starting from 2.6.18 kernel don't export do_kern_mount
 994 # and want to use vfs_kern_mount instead.
 995 #
 996 AC_DEFUN([LC_VFS_KERN_MOUNT],
 997 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
 998 LB_LINUX_TRY_COMPILE([
 999         #include <linux/mount.h>
1000 ],[
1001         vfs_kern_mount(NULL, 0, NULL, NULL);
1002 ],[
1003         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
1004                 [vfs_kern_mount exist in kernel])
1005         AC_MSG_RESULT([yes])
1006 ],[
1007         AC_MSG_RESULT([no])
1008 ])
1009 ])
1010
1011 #
1012 # LC_INVALIDATEPAGE_RETURN_INT
1013 # 2.6.17 changes return type for invalidatepage to 'void' from 'int'
1014 #
1015 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
1016 [AC_MSG_CHECKING([invalidatepage has return int])
1017 LB_LINUX_TRY_COMPILE([
1018         #include <linux/buffer_head.h>
1019 ],[
1020         int rc = block_invalidatepage(NULL, 0);
1021 ],[
1022         AC_MSG_RESULT(yes)
1023         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
1024                 [Define if return type of invalidatepage should be int])
1025 ],[
1026         AC_MSG_RESULT(no)
1027 ])
1028 ])
1029
1030 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
1031 # after 2.6.18 umount_begin has different parameters
1032 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
1033 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
1034 tmp_flags="$EXTRA_KCFLAGS"
1035 EXTRA_KCFLAGS="-Werror"
1036 LB_LINUX_TRY_COMPILE([
1037         #include <linux/fs.h>
1038
1039         struct vfsmount;
1040         static void cfg_umount_begin (struct vfsmount *v, int flags)
1041         {
1042                 ;
1043         }
1044
1045         static struct super_operations cfg_super_operations = {
1046                 .umount_begin   = cfg_umount_begin,
1047         };
1048 ],[
1049         cfg_super_operations.umount_begin(NULL,0);
1050 ],[
1051         AC_MSG_RESULT(yes)
1052         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
1053                 [Define umount_begin need second argument])
1054 ],[
1055         AC_MSG_RESULT(no)
1056 ])
1057 EXTRA_KCFLAGS="$tmp_flags"
1058 ])
1059
1060 # LC_SEQ_LOCK
1061 # after 2.6.18 seq_file has lock intead of sem
1062 AC_DEFUN([LC_SEQ_LOCK],
1063 [AC_MSG_CHECKING([if struct seq_file has lock field])
1064 LB_LINUX_TRY_COMPILE([
1065         #include <linux/seq_file.h>
1066 ],[
1067         struct seq_file seq;
1068
1069         mutex_unlock(&seq.lock);
1070 ],[
1071         AC_MSG_RESULT(yes)
1072         AC_DEFINE(HAVE_SEQ_LOCK, 1,
1073                 [after 2.6.18 seq_file has lock intead of sem])
1074 ],[
1075         AC_MSG_RESULT(NO)
1076 ])
1077 ])
1078
1079 #
1080 # LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1081 #
1082 # No standard kernels export this
1083 #
1084 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1085 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1086 [mm/filemap.c],[
1087 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1088             [filemap_fdatawrite_range is exported by the kernel])
1089 ],[
1090 ])
1091 ])
1092
1093 # LC_FLUSH_OWNER_ID
1094 # starting from 2.6.18 the file_operations .flush
1095 # method has a new "fl_owner_t id" parameter
1096 #
1097 AC_DEFUN([LC_FLUSH_OWNER_ID],
1098 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
1099 LB_LINUX_TRY_COMPILE([
1100         #include <linux/fs.h>
1101 ],[
1102         struct file_operations *fops = NULL;
1103         fl_owner_t id;
1104         int i;
1105
1106         i = fops->flush(NULL, id);
1107 ],[
1108         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
1109                 [file_operations .flush method has an fl_owner_t id])
1110         AC_MSG_RESULT([yes])
1111 ],[
1112         AC_MSG_RESULT([no])
1113 ])
1114 ])
1115
1116 #
1117 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
1118 #
1119 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1120 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1121 #
1122 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1123     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1124          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1125                         [exported invalidate_mapping_pages])],
1126     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1127          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1128                         [exported invalidate_inode_pages])], [
1129        AC_MSG_ERROR([no way to invalidate pages])
1130   ])
1131     ],[])
1132 ])
1133
1134 #2.6.18 + RHEL5 (fc6)
1135
1136 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
1137 AC_DEFUN([LC_PG_FS_MISC],
1138 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1139 LB_LINUX_TRY_COMPILE([
1140         #include <linux/mm.h>
1141         #include <linux/page-flags.h>
1142 ],[
1143         #ifndef PG_fs_misc
1144         #error PG_fs_misc not defined in kernel
1145         #endif
1146 ],[
1147         AC_MSG_RESULT(yes)
1148         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1149                   [is kernel have PG_fs_misc])
1150 ],[
1151         AC_MSG_RESULT(no)
1152 ])
1153 ])
1154
1155 # RHEL5 PageChecked and SetPageChecked defined
1156 AC_DEFUN([LC_PAGE_CHECKED],
1157 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1158 LB_LINUX_TRY_COMPILE([
1159 #ifdef HAVE_LINUX_MMTYPES_H
1160         #include <linux/mm_types.h>
1161 #endif
1162         #include <linux/page-flags.h>
1163 ],[
1164         struct page *p;
1165
1166         /* before 2.6.26 this define*/
1167         #ifndef PageChecked
1168         /* 2.6.26 use function instead of define for it */
1169         SetPageChecked(p);
1170         PageChecked(p);
1171         #endif
1172 ],[
1173         AC_MSG_RESULT(yes)
1174         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1175                   [does kernel have PageChecked and SetPageChecked])
1176 ],[
1177         AC_MSG_RESULT(no)
1178 ])
1179 ])
1180
1181 #
1182 # LC_LINUX_FIEMAP_H
1183 #
1184 # If we have fiemap.h
1185 # after 2.6.27 use fiemap.h in include/linux
1186 #
1187 AC_DEFUN([LC_LINUX_FIEMAP_H],
1188 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1189         AC_MSG_CHECKING([if fiemap.h can be compiled])
1190         LB_LINUX_TRY_COMPILE([
1191                 #include <linux/types.h>
1192                 #include <linux/fiemap.h>
1193         ],[],[
1194                 AC_MSG_RESULT([yes])
1195                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1196         ],[
1197                 AC_MSG_RESULT([no])
1198         ])
1199 ],
1200 [])
1201 ])
1202
1203 # 2.6.19
1204
1205 # 2.6.19 API changes
1206 # inode don't have i_blksize field
1207 AC_DEFUN([LC_INODE_BLKSIZE],
1208 [AC_MSG_CHECKING([inode has i_blksize field])
1209 LB_LINUX_TRY_COMPILE([
1210 #include <linux/fs.h>
1211 ],[
1212         struct inode i;
1213         i.i_blksize = 0;
1214 ],[
1215         AC_MSG_RESULT(yes)
1216         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1217                 [struct inode has i_blksize field])
1218 ],[
1219         AC_MSG_RESULT(no)
1220 ])
1221 ])
1222
1223 # LC_FILE_WRITEV
1224 # 2.6.19 replaced writev with aio_write
1225 AC_DEFUN([LC_FILE_WRITEV],
1226 [AC_MSG_CHECKING([writev in fops])
1227 LB_LINUX_TRY_COMPILE([
1228         #include <linux/fs.h>
1229 ],[
1230         struct file_operations *fops = NULL;
1231         fops->writev = NULL;
1232 ],[
1233         AC_MSG_RESULT(yes)
1234         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1235                 [use fops->writev])
1236 ],[
1237         AC_MSG_RESULT(no)
1238 ])
1239 ])
1240
1241 # LC_FILE_READV
1242 # 2.6.19 replaced readv with aio_read
1243 AC_DEFUN([LC_FILE_READV],
1244 [AC_MSG_CHECKING([readv in fops])
1245 LB_LINUX_TRY_COMPILE([
1246         #include <linux/fs.h>
1247 ],[
1248         struct file_operations *fops = NULL;
1249         fops->readv = NULL;
1250 ],[
1251         AC_MSG_RESULT(yes)
1252         AC_DEFINE(HAVE_FILE_READV, 1,
1253                 [use fops->readv])
1254 ],[
1255         AC_MSG_RESULT(no)
1256 ])
1257 ])
1258
1259 # 2.6.20
1260
1261 # LC_CANCEL_DIRTY_PAGE
1262 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
1263 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1264         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1265         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
1266         # backport is broken, so ignore it
1267         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
1268            test "$(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
1269                 AC_MSG_RESULT(no)
1270         else
1271                 LB_LINUX_TRY_COMPILE([
1272                         #include <linux/mm.h>
1273                         #include <linux/page-flags.h>
1274 ],[
1275                         cancel_dirty_page(NULL, 0);
1276 ],[
1277                         AC_MSG_RESULT(yes)
1278                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1279                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1280 ],[
1281                         AC_MSG_RESULT(no)
1282 ])
1283         fi
1284 ])
1285
1286 # raid5-zerocopy patch
1287
1288 #
1289 # LC_PAGE_CONSTANT
1290 #
1291 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1292 # it support constant page, which means the page won't be modified during the
1293 # IO.
1294 #
1295 AC_DEFUN([LC_PAGE_CONSTANT],
1296 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1297 LB_LINUX_TRY_COMPILE([
1298         #include <linux/mm.h>
1299         #include <linux/page-flags.h>
1300 ],[
1301         #ifndef PG_constant
1302         #error "Have no raid5 zcopy patch"
1303         #endif
1304 ],[
1305         AC_MSG_RESULT(yes)
1306         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1307 ],[
1308         AC_MSG_RESULT(no);
1309 ])
1310 ])
1311
1312 # 2.6.22
1313
1314 # 2.6.22 lost second parameter for invalidate_bdev
1315 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1316 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1317 LB_LINUX_TRY_COMPILE([
1318         #include <linux/buffer_head.h>
1319 ],[
1320         invalidate_bdev(NULL,0);
1321 ],[
1322         AC_MSG_RESULT([yes])
1323         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1324                 [invalidate_bdev has second argument])
1325 ],[
1326         AC_MSG_RESULT([no])
1327 ])
1328 ])
1329
1330 #
1331 # check for crypto API
1332 #
1333 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1334 [AC_MSG_CHECKING([if kernel has block cipher support])
1335 LB_LINUX_TRY_COMPILE([
1336         #include <linux/err.h>
1337         #include <linux/crypto.h>
1338 ],[
1339         struct crypto_blkcipher *tfm;
1340         tfm = crypto_alloc_blkcipher("aes", 0, sizeof(tfm) );
1341 ],[
1342         AC_MSG_RESULT([yes])
1343         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1344 ],[
1345         AC_MSG_RESULT([no])
1346 ])
1347 ])
1348
1349 #
1350 # check for struct hash_desc
1351 #
1352 AC_DEFUN([LC_STRUCT_HASH_DESC],
1353 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1354 LB_LINUX_TRY_COMPILE([
1355         #include <linux/err.h>
1356         #include <linux/crypto.h>
1357 ],[
1358         struct hash_desc foo;
1359 ],[
1360         AC_MSG_RESULT([yes])
1361         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1362 ],[
1363         AC_MSG_RESULT([no])
1364 ])
1365 ])
1366
1367 #
1368 # check for struct blkcipher_desc
1369 #
1370 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1371 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1372 LB_LINUX_TRY_COMPILE([
1373         #include <linux/err.h>
1374         #include <linux/crypto.h>
1375 ],[
1376         struct blkcipher_desc foo;
1377 ],[
1378         AC_MSG_RESULT([yes])
1379         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1380 ],[
1381         AC_MSG_RESULT([no])
1382 ])
1383 ])
1384
1385 #
1386 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1387 #
1388 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1389 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1390 LB_LINUX_TRY_COMPILE([
1391         #include <linux/fs.h>
1392 ],[
1393         int v = FS_RENAME_DOES_D_MOVE;
1394 ],[
1395         AC_MSG_RESULT([yes])
1396         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1397 ],[
1398         AC_MSG_RESULT([no])
1399 ])
1400 ])
1401
1402 # 2.6.23
1403
1404 # 2.6.23 have return type 'void' for unregister_blkdev
1405 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1406 [AC_MSG_CHECKING([if unregister_blkdev return int])
1407 LB_LINUX_TRY_COMPILE([
1408         #include <linux/fs.h>
1409 ],[
1410         int i = unregister_blkdev(0,NULL);
1411 ],[
1412         AC_MSG_RESULT([yes])
1413         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1414                 [unregister_blkdev return int])
1415 ],[
1416         AC_MSG_RESULT([no])
1417 ])
1418 ])
1419
1420 # 2.6.23 change .sendfile to .splice_read
1421 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1422 [AC_MSG_CHECKING([if kernel has .splice_read])
1423 LB_LINUX_TRY_COMPILE([
1424         #include <linux/fs.h>
1425 ],[
1426         struct file_operations file;
1427
1428         file.splice_read = NULL;
1429 ], [
1430         AC_MSG_RESULT([yes])
1431         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1432                 [kernel has .slice_read])
1433 ],[
1434         AC_MSG_RESULT([no])
1435 ])
1436 ])
1437
1438 # 2.6.23 change .sendfile to .splice_read
1439 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1440 AC_DEFUN([LC_KERNEL_SENDFILE],
1441 [AC_MSG_CHECKING([if kernel has .sendfile])
1442 LB_LINUX_TRY_COMPILE([
1443         #include <linux/fs.h>
1444 ],[
1445         struct file_operations file;
1446
1447         file.sendfile = NULL;
1448 ], [
1449         AC_MSG_RESULT([yes])
1450         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1451                 [kernel has .sendfile])
1452 ],[
1453         AC_MSG_RESULT([no])
1454 ])
1455 ])
1456
1457 # 2.6.23 extract nfs export related data into exportfs.h
1458 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1459 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1460         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1461                 [kernel has include/exportfs.h])
1462 ],[
1463         AC_MSG_RESULT([no])
1464 ])
1465 ])
1466
1467 # 2.6.23 has new page fault handling API
1468 AC_DEFUN([LC_VM_OP_FAULT],
1469 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1470 LB_LINUX_TRY_COMPILE([
1471         #include <linux/mm.h>
1472 ],[
1473         struct vm_operations_struct op;
1474
1475         op.fault = NULL;
1476 ], [
1477         AC_MSG_RESULT([yes])
1478         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1479                 [kernel has .fault in vm_operation_struct])
1480 ],[
1481         AC_MSG_RESULT([no])
1482 ])
1483 ])
1484
1485 # 2.6.23 add code to wait other users to complete before removing procfs entry
1486 AC_DEFUN([LC_PROCFS_USERS],
1487 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1488 LB_LINUX_TRY_COMPILE([
1489         #include <linux/proc_fs.h>
1490 ],[
1491         struct proc_dir_entry pde;
1492
1493         pde.pde_users   = 0;
1494 ],[
1495         AC_MSG_RESULT([yes])
1496         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1497                 [kernel has pde_users member in procfs entry struct])
1498 ],[
1499         AC_MSG_RESULT([no])
1500 ])
1501 ])
1502
1503 # 2.6.23 exports exportfs_decode_fh
1504 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1505 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1506 [fs/exportfs/expfs.c],[
1507         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1508                 [exportfs_decode_fh has been export])
1509 ],[
1510 ])
1511 ])
1512
1513 # 2.6.24
1514
1515 # 2.6.24 need linux/mm_types.h included
1516 AC_DEFUN([LC_HAVE_MMTYPES_H],
1517 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1518         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1519                 [kernel has include/mm_types.h])
1520 ],[
1521         AC_MSG_RESULT([no])
1522 ])
1523 ])
1524
1525 # 2.6.24 has bio_endio with 2 args
1526 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1527 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1528 LB_LINUX_TRY_COMPILE([
1529         #include <linux/bio.h>
1530 ],[
1531         bio_endio(NULL, 0);
1532 ], [
1533         AC_MSG_RESULT([yes])
1534         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1535                 [kernel has bio_endio with 2 args])
1536 ],[
1537         AC_MSG_RESULT([no])
1538 ])
1539 ])
1540
1541 # 2.6.24 has new members in exports struct.
1542 AC_DEFUN([LC_FH_TO_DENTRY],
1543 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1544 LB_LINUX_TRY_COMPILE([
1545         #include <linux/fs.h>
1546 #ifdef HAVE_LINUX_EXPORTFS_H
1547         #include <linux/exportfs.h>
1548 #endif
1549 ],[
1550         struct export_operations exp;
1551         memset(exp.fh_to_dentry, 0, sizeof(exp.fh_to_dentry));
1552 ], [
1553         AC_MSG_RESULT([yes])
1554         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1555                 [kernel has .fh_to_dentry member in export_operations struct])
1556 ],[
1557         AC_MSG_RESULT([no])
1558 ])
1559 ])
1560
1561 # 2.6.24 removes long aged procfs entry -> deleted member
1562 AC_DEFUN([LC_PROCFS_DELETED],
1563 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1564 LB_LINUX_TRY_COMPILE([
1565         #include <linux/proc_fs.h>
1566 ],[
1567         struct proc_dir_entry pde;
1568
1569         pde.deleted = sizeof(pde);
1570 ], [
1571         AC_MSG_RESULT([yes])
1572         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1573                 [kernel has deleted member in procfs entry struct])
1574 ],[
1575         AC_MSG_RESULT([no])
1576 ])
1577 ])
1578
1579 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1580 AC_DEFUN([LC_EXPORT_BDI_INIT],
1581 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1582 [mm/backing-dev.c],[
1583         AC_DEFINE(HAVE_BDI_INIT, 1,
1584                 [bdi_init/bdi_destroy functions are present])
1585 ],[
1586 ])
1587 ])
1588
1589 # 2.6.25
1590
1591 # 2.6.25 change define to inline
1592 AC_DEFUN([LC_MAPPING_CAP_WRITEBACK_DIRTY],
1593 [AC_MSG_CHECKING([if kernel have mapping_cap_writeback_dirty])
1594 LB_LINUX_TRY_COMPILE([
1595         #include <linux/backing-dev.h>
1596 ],[
1597         #ifndef mapping_cap_writeback_dirty
1598         mapping_cap_writeback_dirty(NULL);
1599         #endif
1600 ],[
1601         AC_MSG_RESULT([yes])
1602         AC_DEFINE(HAVE_MAPPING_CAP_WRITEBACK_DIRTY, 1,
1603                 [kernel have mapping_cap_writeback_dirty])
1604 ],[
1605         AC_MSG_RESULT([no])
1606 ])
1607 ])
1608
1609 # 2.6.26
1610
1611 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1612 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1613 [AC_MSG_CHECKING([fs_struct use path structure])
1614 LB_LINUX_TRY_COMPILE([
1615         #include <asm/atomic.h>
1616         #include <linux/spinlock.h>
1617         #include <linux/fs_struct.h>
1618 ],[
1619         struct path path;
1620         struct fs_struct fs;
1621
1622         fs.pwd = path;
1623         memset(&fs, 0, sizeof(fs));
1624 ], [
1625         AC_MSG_RESULT([yes])
1626         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1627                 [fs_struct use path structure])
1628 ],[
1629         AC_MSG_RESULT([no])
1630 ])
1631 ])
1632
1633
1634 #
1635 # 2.6.27
1636 #
1637 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1638 [AC_MSG_CHECKING([inode_operations->permission has two args])
1639 LB_LINUX_TRY_COMPILE([
1640         #include <linux/fs.h>
1641 ],[
1642         struct inode *inode;
1643         inode->i_op->permission(NULL, 0);
1644 ],[
1645         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1646                   [inode_operations->permission has two args])
1647         AC_MSG_RESULT([yes])
1648 ],[
1649         AC_MSG_RESULT([no])
1650 ])
1651 ])
1652
1653 # 2.6.27 has file_remove_suid instead of remove_suid
1654 AC_DEFUN([LC_FILE_REMOVE_SUID],
1655 [AC_MSG_CHECKING([kernel has file_remove_suid])
1656 LB_LINUX_TRY_COMPILE([
1657         #include <linux/fs.h>
1658 ],[
1659         file_remove_suid(NULL);
1660 ],[
1661         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1662                   [kernel have file_remove_suid])
1663         AC_MSG_RESULT([yes])
1664 ],[
1665         AC_MSG_RESULT([no])
1666 ])
1667 ])
1668
1669 # 2.6.27 have new page locking API
1670 AC_DEFUN([LC_TRYLOCKPAGE],
1671 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1672 LB_LINUX_TRY_COMPILE([
1673         #include <linux/pagemap.h>
1674 ],[
1675         trylock_page(NULL);
1676 ],[
1677         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1678                   [kernel uses trylock_page for page lock])
1679         AC_MSG_RESULT([yes])
1680 ],[
1681         AC_MSG_RESULT([no])
1682 ])
1683 ])
1684
1685 # 2.6.27 removed the read_inode from super_operations.
1686 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1687 [AC_MSG_CHECKING([super_operations has a read_inode field])
1688 LB_LINUX_TRY_COMPILE([
1689         #include <linux/fs.h>
1690 ],[
1691         struct super_operations *sop;
1692         sop->read_inode(NULL);
1693 ],[
1694         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1695                 [super_operations has a read_inode])
1696         AC_MSG_RESULT([yes])
1697 ],[
1698         AC_MSG_RESULT([no])
1699 ])
1700 ])
1701
1702 # 2.6.27 has inode_permission instead of permisson
1703 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1704 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1705 [fs/namei.c],[
1706 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1707             [inode_permission is exported by the kernel])
1708 ],[
1709 ])
1710 ])
1711
1712 # 2.6.27 use 5th parameter in quota_on for remount.
1713 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1714 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1715 LB_LINUX_TRY_COMPILE([
1716         #include <linux/quota.h>
1717 ],[
1718         struct quotactl_ops *qop;
1719         qop->quota_on(NULL, 0, 0, NULL, 0);
1720 ],[
1721         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1722                 [quota_on needs 5 paramters])
1723         AC_MSG_RESULT([yes])
1724 ],[
1725         AC_MSG_RESULT([no])
1726 ])
1727 ])
1728
1729 # 2.6.27 use 3th parameter in quota_off for remount.
1730 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1731 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1732 LB_LINUX_TRY_COMPILE([
1733         #include <linux/quota.h>
1734 ],[
1735         struct quotactl_ops *qop;
1736         qop->quota_off(NULL, 0, 0);
1737 ],[
1738         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1739                 [quota_off needs 3 paramters])
1740         AC_MSG_RESULT([yes])
1741 ],[
1742         AC_MSG_RESULT([no])
1743 ])
1744 ])
1745
1746 # 2.6.27 has vfs_dq_off inline function.
1747 AC_DEFUN([LC_VFS_DQ_OFF],
1748 [AC_MSG_CHECKING([vfs_dq_off is defined])
1749 LB_LINUX_TRY_COMPILE([
1750         #include <linux/quotaops.h>
1751 ],[
1752         vfs_dq_off(NULL, 0);
1753 ],[
1754         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1755         AC_MSG_RESULT([yes])
1756 ],[
1757         AC_MSG_RESULT([no])
1758 ])
1759 ])
1760
1761 # LC_LOCK_MAP_ACQUIRE
1762 # after 2.6.27 lock_map_acquire replaces lock_acquire
1763 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1764 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1765 LB_LINUX_TRY_COMPILE([
1766         #include <linux/lockdep.h>
1767 ],[
1768         lock_map_acquire(NULL);
1769 ],[
1770         AC_MSG_RESULT(yes)
1771         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1772                 [lock_map_acquire is defined])
1773 ],[
1774         AC_MSG_RESULT(no)
1775 ])
1776 ])
1777
1778 # 2.6.27.15-2 sles11
1779
1780 # 2.6.27 sles11 remove the bi_hw_segments
1781 AC_DEFUN([LC_BI_HW_SEGMENTS],
1782 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1783 LB_LINUX_TRY_COMPILE([
1784         #include <linux/bio.h>
1785 ],[
1786         struct bio io;
1787         io.bi_hw_segments = sizeof(io);
1788 ],[
1789         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1790                 [struct bio has a bi_hw_segments field])
1791         AC_MSG_RESULT([yes])
1792 ],[
1793         AC_MSG_RESULT([no])
1794 ])
1795 ])
1796
1797 #
1798 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1799 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1800 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1801 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1802         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1803                 [kernel has include/linux/quotaio_v2.h])
1804 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1805                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1806                 [kernel has fs/quotaio_v1.h])
1807 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1808                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1809                 [kernel has fs/quota/quotaio_v2.h])
1810 ],[
1811         AC_MSG_RESULT([no])
1812 ])
1813 ])
1814 ])
1815 ])
1816
1817 # sles10 sp2 need 5 parameter for vfs_symlink
1818 AC_DEFUN([LC_VFS_SYMLINK_5ARGS],
1819 [AC_MSG_CHECKING([vfs_symlink need 5 parameter])
1820 LB_LINUX_TRY_COMPILE([
1821         #include <linux/fs.h>
1822 ],[
1823         struct inode *dir = NULL;
1824         struct dentry *dentry = NULL;
1825         struct vfsmount *mnt = NULL;
1826         const char * path = NULL;
1827         vfs_symlink(dir, dentry, mnt, path, 0);
1828 ],[
1829         AC_DEFINE(HAVE_VFS_SYMLINK_5ARGS, 1,
1830                 [vfs_symlink need 5 parameteres])
1831         AC_MSG_RESULT([yes])
1832 ],[
1833         AC_MSG_RESULT([no])
1834 ])
1835 ])
1836
1837 # 2.6.27 sles11 has sb_any_quota_active
1838 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1839 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1840 LB_LINUX_TRY_COMPILE([
1841         #include <linux/quotaops.h>
1842 ],[
1843         sb_any_quota_active(NULL);
1844 ],[
1845         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1846                 [Kernel has a sb_any_quota_active])
1847         AC_MSG_RESULT([yes])
1848 ],[
1849         AC_MSG_RESULT([no])
1850 ])
1851 ])
1852
1853 # 2.6.27 sles11 has sb_has_quota_active
1854 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1855 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1856 LB_LINUX_TRY_COMPILE([
1857         #include <linux/quotaops.h>
1858 ],[
1859         sb_has_quota_active(NULL, 0);
1860 ],[
1861         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1862                 [Kernel has a sb_has_quota_active])
1863         AC_MSG_RESULT([yes])
1864 ],[
1865         AC_MSG_RESULT([no])
1866 ])
1867 ])
1868
1869 # 2.6.27 exported add_to_page_cache_lru.
1870 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1871 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1872 [mm/filemap.c],[
1873         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1874                 [add_to_page_cache_lru functions are present])
1875 ],[
1876 ])
1877 ])
1878
1879 # 2.6.31
1880
1881 # 2.6.30 x86 node_to_cpumask has been removed. must use cpumask_of_node
1882 AC_DEFUN([LC_EXPORT_CPUMASK_OF_NODE],
1883          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask_map],
1884                                  [arch/$LINUX_ARCH/mm/numa.c],
1885                                  [AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1,
1886                                             [node_to_cpumask_map is exported by
1887                                              the kernel])]) # x86_64
1888          ])
1889
1890 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1891 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1892 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1893 LB_LINUX_TRY_COMPILE([
1894         #include <linux/blkdev.h>
1895 ],[
1896         blk_queue_logical_block_size(NULL, 0);
1897 ],[
1898         AC_MSG_RESULT(yes)
1899         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1900                   [blk_queue_logical_block_size is defined])
1901 ],[
1902         AC_MSG_RESULT(no)
1903 ])
1904 ])
1905
1906 # 2.6.32
1907
1908 # 2.6.32 add a limits member in struct request_queue.
1909 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1910 [AC_MSG_CHECKING([if request_queue has a limits field])
1911 LB_LINUX_TRY_COMPILE([
1912         #include <linux/blkdev.h>
1913 ],[
1914         struct request_queue rq;
1915         rq.limits.io_min = 0;
1916 ],[
1917         AC_MSG_RESULT(yes)
1918         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1919                   [request_queue has a limits field])
1920 ],[
1921         AC_MSG_RESULT(no)
1922 ])
1923 ])
1924
1925 # 2.6.32 has bdi_register() functions.
1926 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1927 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1928 [mm/backing-dev.c],[
1929         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1930                 [bdi_register function is present])
1931 ],[
1932 ])
1933 ])
1934
1935 # 2.6.32 add s_bdi for super block
1936 AC_DEFUN([LC_SB_BDI],
1937 [AC_MSG_CHECKING([if super_block has s_bdi field])
1938 LB_LINUX_TRY_COMPILE([
1939         #include <linux/fs.h>
1940 ],[
1941         struct super_block sb;
1942         sb.s_bdi = NULL;
1943 ],[
1944         AC_MSG_RESULT(yes)
1945         AC_DEFINE(HAVE_SB_BDI, 1,
1946                   [super_block has s_bdi field])
1947 ],[
1948         AC_MSG_RESULT(no)
1949 ])
1950 ])
1951
1952 #  2.6.27.15-2 SuSE 11 sp0 kernels lack the name field for BDI
1953 AC_DEFUN([LC_BDI_NAME],
1954 [AC_MSG_CHECKING([if backing_device_info has name field])
1955 LB_LINUX_TRY_COMPILE([
1956         #include <linux/blkkdev.h>
1957 ],[
1958         struct backing_dev_info bdi;
1959         bdi.name = NULL;
1960 ],[
1961         AC_MSG_RESULT(yes)
1962         AC_DEFINE(HAVE_BDI_NAME, 1,
1963                   [backing_device_info has name field])
1964 ],[
1965         AC_MSG_RESULT(no)
1966 ])
1967 ])
1968
1969 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1970 # check blk_queue_max_sectors and use it until disappear.
1971 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
1972 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
1973 LB_LINUX_TRY_COMPILE([
1974         #include <linux/blkdev.h>
1975 ],[
1976         blk_queue_max_sectors(NULL, 0);
1977 ],[
1978         AC_MSG_RESULT(yes)
1979         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
1980                   [blk_queue_max_sectors is defined])
1981 ],[
1982         AC_MSG_RESULT(no)
1983 ])
1984 ])
1985
1986 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
1987 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
1988 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
1989 LB_LINUX_TRY_COMPILE([
1990         #include <linux/blkdev.h>
1991 ],[
1992         blk_queue_max_segments(NULL, 0);
1993 ],[
1994         AC_MSG_RESULT(yes)
1995         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
1996                   [blk_queue_max_segments is defined])
1997 ],[
1998         AC_MSG_RESULT(no)
1999 ])
2000 ])
2001
2002 #
2003 # LC_QUOTA64
2004 #
2005 # Check if kernel has been patched for 64-bit quota limits support.
2006 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
2007 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
2008 # that in the absence of quotaio_v1.h in the kernel headers.
2009 #
2010 AC_DEFUN([LC_QUOTA64],[
2011         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
2012 tmp_flags="$EXTRA_KCFLAGS"
2013 EXTRA_KCFLAGS="-I$LINUX/fs"
2014         LB_LINUX_TRY_COMPILE([
2015                 #include <linux/kernel.h>
2016                 #include <linux/fs.h>
2017                 #ifdef HAVE_QUOTAIO_H
2018                 # include <linux/quotaio_v2.h>
2019                 int versions[] = V2_INITQVERSIONS_R1;
2020                 struct v2_disk_dqblk_r1 dqblk_r1;
2021                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
2022                 # include <quota/quotaio_v2.h>
2023                 struct v2r1_disk_dqblk dqblk_r1;
2024                 #elif defined(HAVE_FS_QUOTAIO_H)
2025                 # include <quotaio_v2.h>
2026                 struct v2r1_disk_dqblk dqblk_r1;
2027                 #else
2028                 #include <linux/quota.h>
2029                 int ver = QFMT_VFS_V1;
2030                 #endif
2031         ],[],[
2032                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
2033                 AC_MSG_RESULT([yes])
2034         ],[
2035                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
2036                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
2037                 ],[])
2038                 AC_MSG_RESULT([no])
2039         ])
2040 EXTRA_KCFLAGS=$tmp_flags
2041 ])
2042
2043 # 2.6.32 set_cpus_allowed is no more defined if CONFIG_CPUMASK_OFFSTACK=yes
2044 AC_DEFUN([LC_SET_CPUS_ALLOWED],
2045          [AC_MSG_CHECKING([if kernel defines set_cpus_allowed])
2046           LB_LINUX_TRY_COMPILE(
2047                 [#include <linux/sched.h>],
2048                 [struct task_struct *p = NULL;
2049                  cpumask_t mask = { { 0 } };
2050                  (void) set_cpus_allowed(p, mask);],
2051                 [AC_MSG_RESULT([yes])
2052                  AC_DEFINE(HAVE_SET_CPUS_ALLOWED, 1,
2053                            [set_cpus_allowed is exported by the kernel])],
2054                 [AC_MSG_RESULT([no])] )])
2055
2056 #
2057 # LC_D_OBTAIN_ALIAS
2058 # starting from 2.6.28 kernel replaces d_alloc_anon() with
2059 # d_obtain_alias() for getting anonymous dentries
2060 #
2061 AC_DEFUN([LC_D_OBTAIN_ALIAS],
2062 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
2063 LB_LINUX_TRY_COMPILE([
2064         #include <linux/dcache.h>
2065 ],[
2066         d_obtain_alias(NULL);
2067 ],[
2068         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
2069                 [d_obtain_alias exist in kernel])
2070         AC_MSG_RESULT([yes])
2071 ],[
2072         AC_MSG_RESULT([no])
2073 ])
2074 ])
2075
2076 #
2077 # 2.6.36 super_operations add evict_inode method. it hybird of
2078 # delete_inode & clear_inode.
2079 #
2080 AC_DEFUN([LC_SBOPS_EVICT_INODE],
2081 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
2082 LB_LINUX_TRY_COMPILE([
2083         #include <linux/fs.h>
2084 ],[
2085         ((struct super_operations *)0)->evict_inode(NULL);
2086 ],[
2087         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
2088                 [super_operations.evict_inode() is exist in kernel])
2089         AC_MSG_RESULT([yes])
2090 ],[
2091         AC_MSG_RESULT([no])
2092 ])
2093 ])
2094
2095 #
2096 # 2.6.38 export blkdev_get_by_dev
2097 #
2098 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
2099 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
2100 [fs/block_dev.c],[
2101 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
2102             [blkdev_get_by_dev is exported by the kernel])
2103 ],[
2104 ])
2105 ])
2106
2107 #
2108 # 2.6.39 remove unplug_fn from request_queue.
2109 #
2110 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
2111 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
2112 LB_LINUX_TRY_COMPILE([
2113         #include <linux/blkdev.h>
2114 ],[
2115         struct request_queue rq;
2116         memset(rq.unplug_fn, 0, sizeof(rq.unplug_fn));
2117 ],[
2118         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
2119                   [request_queue has unplug_fn field])
2120         AC_MSG_RESULT([yes])
2121 ],[
2122         AC_MSG_RESULT([no])
2123 ])
2124 ])
2125
2126 #
2127 # 2.6.38 generic_permission taken 4 paremater.
2128 # in fact, it means rcu-walk aware permission bring.
2129 #
2130 AC_DEFUN([LC_GENERIC_PERMISSION],
2131 [AC_MSG_CHECKING([if generic_permission take 4 arguments])
2132 LB_LINUX_TRY_COMPILE([
2133         #include <linux/fs.h>
2134 ],[
2135         generic_permission(NULL, 0, 0, NULL);
2136 ],[
2137         AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
2138                   [generic_permission taken 4 arguments])
2139         AC_MSG_RESULT([yes])
2140 ],[
2141         AC_MSG_RESULT([no])
2142 ])
2143 ])
2144
2145 #
2146 # LC_PROG_LINUX
2147 #
2148 # Lustre linux kernel checks
2149 #
2150 AC_DEFUN([LC_PROG_LINUX],
2151          [LC_LUSTRE_VERSION_H
2152          LC_CONFIG_PINGER
2153          LC_CONFIG_CHECKSUM
2154          LC_CONFIG_LIBLUSTRE_RECOVERY
2155          LC_CONFIG_HEALTH_CHECK_WRITE
2156          LC_CONFIG_LRU_RESIZE
2157          LC_QUOTA_MODULE
2158          LC_LLITE_LLOOP_MODULE
2159
2160          # RHEL4 patches
2161          LC_EXPORT_TRUNCATE_COMPLETE
2162          LC_EXPORT_TRUNCATE_RANGE
2163          LC_EXPORT_D_REHASH_COND
2164          LC_EXPORT___D_REHASH
2165          LC_EXPORT_NODE_TO_CPUMASK
2166
2167          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
2168          LC_STRUCT_STATFS
2169          LC_FILEMAP_POPULATE
2170          LC_D_ADD_UNIQUE
2171          LC_BIT_SPINLOCK_H
2172
2173          LC_XATTR_ACL
2174          LC_POSIX_ACL_XATTR_H
2175          LC_CONST_ACL_SIZE
2176
2177          LC_STRUCT_INTENT_FILE
2178
2179          LC_CAPA_CRYPTO
2180          LC_CONFIG_RMTCLIENT
2181          LC_CONFIG_GSS
2182          LC_FUNC_HAVE_CAN_SLEEP_ARG
2183          LC_FUNC_F_OP_FLOCK
2184          LC_QUOTA_READ
2185          LC_COOKIE_FOLLOW_LINK
2186          LC_FUNC_RCU
2187          LC_PERCPU_COUNTER
2188          LC_TASK_CLENV_STORE
2189
2190          # ~2.6.11
2191          LC_S_TIME_GRAN
2192          LC_SB_TIME_GRAN
2193
2194          # 2.6.12
2195          LC_RW_TREE_LOCK
2196          LC_EXPORT_SYNCHRONIZE_RCU
2197
2198          # 2.6.15
2199          LC_INODE_I_MUTEX
2200
2201          # 2.6.16
2202          LC_SECURITY_PLUG  # for SLES10 SP2
2203
2204          # 2.6.17
2205          LC_INODE_IPRIVATE
2206          LC_DQUOTOFF_MUTEX
2207
2208          # 2.6.18
2209          LC_NR_PAGECACHE
2210          LC_STATFS_DENTRY_PARAM
2211          LC_VFS_KERN_MOUNT
2212          LC_INVALIDATEPAGE_RETURN_INT
2213          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2214          LC_SEQ_LOCK
2215          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
2216          LC_FLUSH_OWNER_ID
2217          if test x$enable_server = xyes ; then
2218                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2219          fi
2220
2221          #2.6.18 + RHEL5 (fc6)
2222          LC_PG_FS_MISC
2223          LC_PAGE_CHECKED
2224          LC_LINUX_FIEMAP_H
2225
2226          # 2.6.19
2227          LC_INODE_BLKSIZE
2228          LC_FILE_WRITEV
2229          LC_FILE_READV
2230
2231          # 2.6.20
2232          LC_CANCEL_DIRTY_PAGE
2233
2234          # raid5-zerocopy patch
2235          LC_PAGE_CONSTANT
2236
2237          # 2.6.22
2238          LC_INVALIDATE_BDEV_2ARG
2239          LC_ASYNC_BLOCK_CIPHER
2240          LC_STRUCT_HASH_DESC
2241          LC_STRUCT_BLKCIPHER_DESC
2242          LC_FS_RENAME_DOES_D_MOVE
2243
2244          # 2.6.23
2245          LC_UNREGISTER_BLKDEV_RETURN_INT
2246          LC_KERNEL_SPLICE_READ
2247          LC_KERNEL_SENDFILE
2248          LC_HAVE_EXPORTFS_H
2249          LC_VM_OP_FAULT
2250          LC_PROCFS_USERS
2251          LC_EXPORTFS_DECODE_FH
2252
2253          # 2.6.24
2254          LC_HAVE_MMTYPES_H
2255          LC_BIO_ENDIO_2ARG
2256          LC_FH_TO_DENTRY
2257          LC_PROCFS_DELETED
2258          LC_EXPORT_BDI_INIT
2259
2260          #2.6.25
2261          LC_MAPPING_CAP_WRITEBACK_DIRTY
2262
2263          # 2.6.26
2264          LC_FS_STRUCT_USE_PATH
2265
2266          # 2.6.27
2267          LC_INODE_PERMISION_2ARGS
2268          LC_FILE_REMOVE_SUID
2269          LC_TRYLOCKPAGE
2270          LC_READ_INODE_IN_SBOPS
2271          LC_EXPORT_INODE_PERMISSION
2272          LC_QUOTA_ON_5ARGS
2273          LC_QUOTA_OFF_3ARGS
2274          LC_VFS_DQ_OFF
2275          LC_LOCK_MAP_ACQUIRE
2276
2277          # 2.6.27.15-2 sles11
2278          LC_BI_HW_SEGMENTS
2279          LC_HAVE_QUOTAIO_H
2280          LC_VFS_SYMLINK_5ARGS
2281          LC_BDI_NAME
2282          LC_SB_ANY_QUOTA_ACTIVE
2283          LC_SB_HAS_QUOTA_ACTIVE
2284          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
2285
2286          # 2.6.30
2287          LC_EXPORT_CPUMASK_OF_NODE
2288
2289          # 2.6.31
2290          LC_BLK_QUEUE_LOG_BLK_SIZE
2291
2292          # 2.6.32
2293          LC_REQUEST_QUEUE_LIMITS
2294          LC_EXPORT_BDI_REGISTER
2295          LC_SB_BDI
2296          LC_BLK_QUEUE_MAX_SECTORS
2297          LC_BLK_QUEUE_MAX_SEGMENTS
2298          LC_SET_CPUS_ALLOWED
2299
2300          # 2.6.36
2301          LC_SBOPS_EVICT_INODE
2302
2303          # 2.6.38
2304          LC_BLKDEV_GET_BY_DEV
2305          LC_GENERIC_PERMISSION
2306
2307          # 2.6.39
2308          LC_REQUEST_QUEUE_UNPLUG_FN
2309
2310          #
2311          if test x$enable_server = xyes ; then
2312              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2313              LC_FUNC_DEV_SET_RDONLY
2314              LC_STACK_SIZE
2315              LC_QUOTA64
2316          fi
2317 ])
2318
2319 #
2320 # LC_CONFIG_CLIENT_SERVER
2321 #
2322 # Build client/server sides of Lustre
2323 #
2324 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2325 [AC_MSG_CHECKING([whether to build Lustre server support])
2326 AC_ARG_ENABLE([server],
2327         AC_HELP_STRING([--disable-server],
2328                         [disable Lustre server support]),
2329         [],[enable_server='yes'])
2330 AC_MSG_RESULT([$enable_server])
2331
2332 AC_MSG_CHECKING([whether to build Lustre client support])
2333 AC_ARG_ENABLE([client],
2334         AC_HELP_STRING([--disable-client],
2335                         [disable Lustre client support]),
2336         [],[enable_client='yes'])
2337 AC_MSG_RESULT([$enable_client])])
2338
2339 #
2340 # LC_CONFIG_LIBLUSTRE
2341 #
2342 # whether to build liblustre
2343 #
2344 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2345 [AC_MSG_CHECKING([whether to build Lustre library])
2346 AC_ARG_ENABLE([liblustre],
2347         AC_HELP_STRING([--disable-liblustre],
2348                         [disable building of Lustre library]),
2349         [],[enable_liblustre=$with_sysio])
2350 AC_MSG_RESULT([$enable_liblustre])
2351 # only build sysio if liblustre is built
2352 with_sysio="$enable_liblustre"
2353
2354 AC_MSG_CHECKING([whether to build liblustre tests])
2355 AC_ARG_ENABLE([liblustre-tests],
2356         AC_HELP_STRING([--enable-liblustre-tests],
2357                         [enable liblustre tests, if --disable-tests is used]),
2358         [],[enable_liblustre_tests=$enable_tests])
2359 if test x$enable_liblustre != xyes ; then
2360    enable_liblustre_tests='no'
2361 fi
2362 AC_MSG_RESULT([$enable_liblustre_tests])
2363
2364 AC_MSG_CHECKING([whether to enable liblustre acl])
2365 AC_ARG_ENABLE([liblustre-acl],
2366         AC_HELP_STRING([--disable-liblustre-acl],
2367                         [disable ACL support for liblustre]),
2368         [],[enable_liblustre_acl=yes])
2369 AC_MSG_RESULT([$enable_liblustre_acl])
2370 if test x$enable_liblustre_acl = xyes ; then
2371   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2372 fi
2373
2374 # 2.6.29 change prepare/commit_write to write_begin/end
2375 AC_DEFUN([LC_WRITE_BEGIN_END],
2376 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2377 LB_LINUX_TRY_COMPILE([
2378         #include <linux/fs.h>
2379         #include <linux/pagemap.h>
2380 #ifdef HAVE_LINUX_MMTYPES_H
2381         #include <linux/mm_types.h>
2382 #endif
2383 ],[
2384         struct address_space_operations aops;
2385         struct page *page;
2386
2387         aops.write_begin = NULL;
2388         aops.write_end = NULL;
2389         page = grab_cache_page_write_begin(NULL, 0, 0);
2390 ], [
2391         AC_MSG_RESULT([yes])
2392         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2393                 [kernel has .write_begin/end])
2394 ],[
2395         AC_MSG_RESULT([no])
2396 ])
2397 ])
2398
2399 # 2.6.29 blkdev_put has 2 arguments
2400 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2401 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2402 LB_LINUX_TRY_COMPILE([
2403         #include <linux/fs.h>
2404 ],[
2405         blkdev_put(NULL, 0);
2406 ],[
2407         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2408                 [blkdev_put needs 2 paramters])
2409         AC_MSG_RESULT([yes])
2410 ],[
2411         AC_MSG_RESULT([no])
2412 ])
2413 ])
2414
2415 # 2.6.29 dentry_open has 4 arguments
2416 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2417 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2418 LB_LINUX_TRY_COMPILE([
2419         #include <linux/fs.h>
2420 ],[
2421         dentry_open(NULL, NULL, 0, NULL);
2422 ],[
2423         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2424                 [dentry_open needs 4 paramters])
2425         AC_MSG_RESULT([yes])
2426 ],[
2427         AC_MSG_RESULT([no])
2428 ])
2429 ])
2430
2431 # 2.6.29 split file and anonymous page queues
2432 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2433 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2434 LB_LINUX_TRY_COMPILE([
2435         #include <linux/mm.h>
2436         #include <linux/pagevec.h>
2437 ],[
2438         struct pagevec lru_pagevec;
2439
2440         pagevec_init(&lru_pagevec, 0);
2441         pagevec_lru_add_file(&lru_pagevec);
2442 ],[
2443         AC_MSG_RESULT([yes])
2444         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2445                 [kernel has .pagevec_lru_add_file])
2446 ],[
2447         AC_MSG_RESULT([no])
2448 ])
2449 ])
2450
2451 #
2452 # --enable-mpitest
2453 #
2454 AC_ARG_ENABLE(mpitests,
2455         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2456                            [include mpi tests]),
2457         [
2458          enable_mpitests=yes
2459          case $enableval in
2460          yes)
2461                 MPICC_WRAPPER=mpicc
2462                 ;;
2463          no)
2464                 enable_mpitests=no
2465                 ;;
2466          *)
2467                 MPICC_WRAPPER=$enableval
2468                  ;;
2469          esac
2470         ],
2471         [
2472         MPICC_WRAPPER=mpicc
2473         enable_mpitests=yes
2474         ]
2475 )
2476
2477 if test x$enable_mpitests != xno; then
2478         AC_MSG_CHECKING([whether mpitests can be built])
2479         oldcc=$CC
2480         CC=$MPICC_WRAPPER
2481         AC_LINK_IFELSE(
2482             [AC_LANG_PROGRAM([[
2483                     #include <mpi.h>
2484                 ]],[[
2485                     int flag;
2486                     MPI_Initialized(&flag);
2487                 ]])],
2488             [
2489                     AC_MSG_RESULT([yes])
2490             ],[
2491                     AC_MSG_RESULT([no])
2492                     enable_mpitests=no
2493         ])
2494         CC=$oldcc
2495 fi
2496 AC_SUBST(MPICC_WRAPPER)
2497
2498 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2499 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2500
2501 LC_CONFIG_PINGER
2502 LC_CONFIG_LIBLUSTRE_RECOVERY
2503 ])
2504
2505 #
2506 # LC_CONFIG_QUOTA
2507 #
2508 # whether to enable quota support global control
2509 #
2510 AC_DEFUN([LC_CONFIG_QUOTA],
2511 [AC_ARG_ENABLE([quota],
2512         AC_HELP_STRING([--enable-quota],
2513                         [enable quota support]),
2514         [],[enable_quota='yes'])
2515 ])
2516
2517 AC_DEFUN([LC_QUOTA],
2518 [#check global
2519 LC_CONFIG_QUOTA
2520 #check for utils
2521 AC_CHECK_HEADER(sys/quota.h,
2522                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2523                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2524 ])
2525
2526 #
2527 # LC_CONFIG_SPLIT
2528 #
2529 # whether to enable split support
2530 #
2531 AC_DEFUN([LC_CONFIG_SPLIT],
2532 [AC_MSG_CHECKING([whether to enable split support])
2533 AC_ARG_ENABLE([split],
2534         AC_HELP_STRING([--enable-split],
2535                         [enable split support]),
2536         [],[enable_split='no'])
2537 AC_MSG_RESULT([$enable_split])
2538 if test x$enable_split != xno; then
2539    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2540 fi
2541 ])
2542
2543 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2544 [AC_MSG_CHECKING([tux_info])
2545 LB_LINUX_TRY_COMPILE([
2546         #include <linux/sched.h>
2547 ],[
2548         struct task_struct task;
2549         &task.tux_info;
2550 ],[
2551         AC_MSG_RESULT([yes])
2552         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2553         have_task_clenv_store='yes'
2554 ],[
2555         AC_MSG_RESULT([no])
2556 ])
2557 ])
2558
2559 #
2560 # LC_LLITE_LLOOP_MODULE
2561 # lloop_llite.ko does not currently work with page sizes
2562 # of 64k or larger.
2563 #
2564 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2565 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2566 LB_LINUX_TRY_COMPILE([
2567         #include <asm/page.h>
2568 ],[
2569         #if PAGE_SIZE >= 65536
2570         #error "PAGE_SIZE >= 65536"
2571         #endif
2572 ],[
2573         enable_llite_lloop_module='yes'
2574         AC_MSG_RESULT([yes])
2575 ],[
2576         enable_llite_lloop_module='no'
2577         AC_MSG_RESULT([no])
2578 ])
2579 ])
2580
2581 #
2582 # LC_CONFIGURE
2583 #
2584 # other configure checks
2585 #
2586 AC_DEFUN([LC_CONFIGURE],
2587 [LC_CONFIG_OBD_BUFFER_SIZE
2588
2589 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2590         CFLAGS="$CFLAGS -Werror"
2591 fi
2592
2593 # maximum MDS thread count
2594 LC_MDS_MAX_THREADS
2595
2596 # include/liblustre.h
2597 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2598
2599 # liblustre/llite_lib.h
2600 AC_CHECK_HEADERS([xtio.h file.h])
2601
2602 # liblustre/dir.c
2603 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2604
2605 # liblustre/lutil.c
2606 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2607 AC_CHECK_FUNCS([inet_ntoa])
2608
2609 # libsysio/src/readlink.c
2610 LC_READLINK_SSIZE_T
2611
2612 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2613 AC_CHECK_HEADERS([linux/random.h], [], [],
2614                  [#ifdef HAVE_LINUX_TYPES_H
2615                   # include <linux/types.h>
2616                   #endif
2617                  ])
2618
2619 # utils/llverfs.c
2620 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2621
2622 # check for -lz support
2623 ZLIB=""
2624 AC_CHECK_LIB([z],
2625              [adler32],
2626              [AC_CHECK_HEADERS([zlib.h],
2627                                [ZLIB="-lz"
2628                                 AC_DEFINE([HAVE_ADLER], 1,
2629                                           [support alder32 checksum type])],
2630                                [AC_MSG_WARN([No zlib-devel package found,
2631                                              unable to use adler32 checksum])])],
2632              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2633 )
2634 AC_SUBST(ZLIB)
2635
2636 # Super safe df
2637 AC_ARG_ENABLE([mindf],
2638       AC_HELP_STRING([--enable-mindf],
2639                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2640       [],[])
2641 if test "$enable_mindf" = "yes" ;  then
2642       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2643 fi
2644
2645 AC_ARG_ENABLE([fail_alloc],
2646         AC_HELP_STRING([--disable-fail-alloc],
2647                 [disable randomly alloc failure]),
2648         [],[enable_fail_alloc=yes])
2649 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2650 AC_MSG_RESULT([$enable_fail_alloc])
2651 if test x$enable_fail_alloc != xno ; then
2652         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2653 fi
2654
2655 AC_ARG_ENABLE([invariants],
2656         AC_HELP_STRING([--enable-invariants],
2657                 [enable invariant checking (cpu intensive)]),
2658         [],[])
2659 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2660 AC_MSG_RESULT([$enable_invariants])
2661 if test x$enable_invariants = xyes ; then
2662         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2663 fi
2664
2665 AC_ARG_ENABLE([lu_ref],
2666         AC_HELP_STRING([--enable-lu_ref],
2667                 [enable lu_ref reference tracking code]),
2668         [],[])
2669 AC_MSG_CHECKING([whether to track references with lu_ref])
2670 AC_MSG_RESULT([$enable_lu_ref])
2671 if test x$enable_lu_ref = xyes ; then
2672         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2673 fi
2674
2675 AC_ARG_ENABLE([pgstate-track],
2676               AC_HELP_STRING([--enable-pgstate-track],
2677                              [enable page state tracking]),
2678               [enable_pgstat_track='yes'],[])
2679 AC_MSG_CHECKING([whether to enable page state tracking])
2680 AC_MSG_RESULT([$enable_pgstat_track])
2681 if test x$enable_pgstat_track = xyes ; then
2682         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2683                   [enable page state tracking code])
2684 fi
2685
2686          #2.6.29
2687          LC_WRITE_BEGIN_END
2688          LC_D_OBTAIN_ALIAS
2689          LC_BLKDEV_PUT_2ARGS
2690          LC_DENTRY_OPEN_4ARGS
2691          LC_PAGEVEC_LRU_ADD_FILE
2692
2693 ])
2694
2695 #
2696 # LC_CONDITIONALS
2697 #
2698 # AM_CONDITIONALS for lustre
2699 #
2700 AC_DEFUN([LC_CONDITIONALS],
2701 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2702 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2703 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2704 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2705 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2706 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2707 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2708 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2709 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2710 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2711 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2712 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2713 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2714 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2715 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2716 ])
2717
2718 #
2719 # LC_CONFIG_FILES
2720 #
2721 # files that should be generated with AC_OUTPUT
2722 #
2723 AC_DEFUN([LC_CONFIG_FILES],
2724 [AC_CONFIG_FILES([
2725 lustre/Makefile
2726 lustre/autoMakefile
2727 lustre/autoconf/Makefile
2728 lustre/conf/Makefile
2729 lustre/contrib/Makefile
2730 lustre/doc/Makefile
2731 lustre/include/Makefile
2732 lustre/include/lustre_ver.h
2733 lustre/include/linux/Makefile
2734 lustre/include/lustre/Makefile
2735 lustre/kernel_patches/targets/2.6-rhel6.target
2736 lustre/kernel_patches/targets/2.6-rhel5.target
2737 lustre/kernel_patches/targets/2.6-sles10.target
2738 lustre/kernel_patches/targets/2.6-sles11.target
2739 lustre/kernel_patches/targets/2.6-oel5.target
2740 lustre/kernel_patches/targets/2.6-fc11.target
2741 lustre/kernel_patches/targets/2.6-fc12.target
2742 lustre/ldlm/Makefile
2743 lustre/fid/Makefile
2744 lustre/fid/autoMakefile
2745 lustre/liblustre/Makefile
2746 lustre/liblustre/tests/Makefile
2747 lustre/liblustre/tests/mpi/Makefile
2748 lustre/llite/Makefile
2749 lustre/llite/autoMakefile
2750 lustre/lclient/Makefile
2751 lustre/lov/Makefile
2752 lustre/lov/autoMakefile
2753 lustre/lvfs/Makefile
2754 lustre/lvfs/autoMakefile
2755 lustre/mdc/Makefile
2756 lustre/mdc/autoMakefile
2757 lustre/lmv/Makefile
2758 lustre/lmv/autoMakefile
2759 lustre/mds/Makefile
2760 lustre/mds/autoMakefile
2761 lustre/mdt/Makefile
2762 lustre/mdt/autoMakefile
2763 lustre/cmm/Makefile
2764 lustre/cmm/autoMakefile
2765 lustre/mdd/Makefile
2766 lustre/mdd/autoMakefile
2767 lustre/fld/Makefile
2768 lustre/fld/autoMakefile
2769 lustre/obdclass/Makefile
2770 lustre/obdclass/autoMakefile
2771 lustre/obdclass/linux/Makefile
2772 lustre/obdecho/Makefile
2773 lustre/obdecho/autoMakefile
2774 lustre/obdfilter/Makefile
2775 lustre/obdfilter/autoMakefile
2776 lustre/osc/Makefile
2777 lustre/osc/autoMakefile
2778 lustre/ost/Makefile
2779 lustre/ost/autoMakefile
2780 lustre/osd-ldiskfs/Makefile
2781 lustre/osd-ldiskfs/autoMakefile
2782 lustre/mgc/Makefile
2783 lustre/mgc/autoMakefile
2784 lustre/mgs/Makefile
2785 lustre/mgs/autoMakefile
2786 lustre/ptlrpc/Makefile
2787 lustre/ptlrpc/autoMakefile
2788 lustre/ptlrpc/gss/Makefile
2789 lustre/ptlrpc/gss/autoMakefile
2790 lustre/quota/Makefile
2791 lustre/quota/autoMakefile
2792 lustre/scripts/Makefile
2793 lustre/tests/Makefile
2794 lustre/tests/mpi/Makefile
2795 lustre/utils/Makefile
2796 lustre/utils/gss/Makefile
2797 lustre/obdclass/darwin/Makefile
2798 ])
2799 ])