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 be computed])
 514 ],[
 515         AC_MSG_RESULT([can't check ACL size, make it 260])
 516         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE,260)
 517 ])
 518 CFLAGS="$tmp_flags"
 519 ])
 520
 521 # added in 2.6.16
 522 #
 523 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 524 [AC_MSG_CHECKING([if struct open_intent has a file field])
 525 LB_LINUX_TRY_COMPILE([
 526         #include <linux/fs.h>
 527         #include <linux/namei.h>
 528 ],[
 529         struct open_intent intent;
 530         &intent.file;
 531 ],[
 532         AC_MSG_RESULT([yes])
 533         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 534 ],[
 535         AC_MSG_RESULT([no])
 536 ])
 537 ])
 538
 539 #
 540 # LC_CAPA_CRYPTO
 541 #
 542 AC_DEFUN([LC_CAPA_CRYPTO],
 543 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 544         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 545 ])
 546 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 547         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 548 ])
 549 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 550         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 551 ])
 552 ])
 553
 554 #
 555 # LC_CONFIG_RMTCLIENT
 556 #
 557 dnl FIXME
 558 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 559 dnl FIXME
 560 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 561 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 562         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 563 ])
 564 ])
 565
 566 #
 567 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 568 #
 569 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 570 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 571  AC_ARG_ENABLE([gss_keyring],
 572                [AC_HELP_STRING([--disable-gss-keyring],
 573                                [disable gss keyring backend])],
 574                [],[enable_gss_keyring='yes'])
 575  AC_MSG_RESULT([$enable_gss_keyring])
 576
 577  if test x$enable_gss_keyring != xno; then
 578         LB_LINUX_CONFIG_IM([KEYS],[],
 579                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 580
 581         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 582                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 583
 584         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 585                   [Define this if you enable gss keyring backend])
 586  fi
 587 ])
 588
 589 AC_DEFUN([LC_SUNRPC_CACHE],
 590 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 591 LB_LINUX_TRY_COMPILE([
 592         #include <linux/sunrpc/cache.h>
 593 ],[
 594         struct cache_head ch;
 595         &ch.ref.refcount;
 596 ],[
 597         AC_MSG_RESULT([yes])
 598         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 599 ],[
 600         AC_MSG_RESULT([no])
 601 ])
 602 ])
 603
 604 AC_DEFUN([LC_CONFIG_SUNRPC],
 605 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 606                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 607  LC_SUNRPC_CACHE
 608 ])
 609
 610 #
 611 # LC_CONFIG_GSS (default disabled)
 612 #
 613 # Build gss and related tools of Lustre. Currently both kernel and user space
 614 # parts are depend on linux platform.
 615 #
 616 AC_DEFUN([LC_CONFIG_GSS],
 617 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 618  AC_ARG_ENABLE([gss],
 619                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 620                [],[enable_gss='no'])
 621  AC_MSG_RESULT([$enable_gss])
 622
 623  if test x$enable_gss == xyes; then
 624         LC_CONFIG_GSS_KEYRING
 625         LC_CONFIG_SUNRPC
 626
 627         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 628
 629         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 630                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 631         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 632                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 633         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 634                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 635         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 636                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 637
 638         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 639                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 640                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 641                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 642                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 643
 644         AC_SUBST(GSSAPI_LIBS)
 645
 646         AC_KERBEROS_V5
 647  fi
 648 ])
 649
 650 #
 651 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 652 #
 653 # 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
 654 #
 655 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 656 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 657 LB_LINUX_TRY_COMPILE([
 658         #include <linux/fs.h>
 659 ],[
 660         int cansleep;
 661         struct file *file;
 662         struct file_lock *file_lock;
 663         flock_lock_file_wait(file, file_lock, cansleep);
 664 ],[
 665         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 666                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 667         AC_MSG_RESULT([yes])
 668 ],[
 669         AC_MSG_RESULT([no])
 670 ])
 671 ])
 672
 673 #
 674 # LC_FUNC_F_OP_FLOCK
 675 #
 676 # rhel4.2 kernel has f_op->flock field
 677 #
 678 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 679 [AC_MSG_CHECKING([if struct file_operations has flock field])
 680 LB_LINUX_TRY_COMPILE([
 681         #include <linux/fs.h>
 682 ],[
 683         struct file_operations ll_file_operations_flock;
 684         ll_file_operations_flock.flock = NULL;
 685 ],[
 686         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 687                 [struct file_operations has flock field])
 688         AC_MSG_RESULT([yes])
 689 ],[
 690         AC_MSG_RESULT([no])
 691 ])
 692 ])
 693
 694 AC_DEFUN([LC_QUOTA_READ],
 695 [AC_MSG_CHECKING([if kernel supports quota_read])
 696 LB_LINUX_TRY_COMPILE([
 697         #include <linux/fs.h>
 698 ],[
 699         struct super_operations sp;
 700         void *i = (void *)sp.quota_read;
 701 ],[
 702         AC_MSG_RESULT([yes])
 703         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
 704 ],[
 705         AC_MSG_RESULT([no])
 706 ])
 707 ])
 708
 709 #
 710 # LC_COOKIE_FOLLOW_LINK
 711 #
 712 # kernel 2.6.13+ ->follow_link returns a cookie
 713 #
 714
 715 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
 716 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
 717 LB_LINUX_TRY_COMPILE([
 718         #include <linux/fs.h>
 719         #include <linux/namei.h>
 720 ],[
 721         struct dentry dentry;
 722         struct nameidata nd;
 723
 724         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
 725 ],[
 726         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
 727         AC_MSG_RESULT([yes])
 728 ],[
 729         AC_MSG_RESULT([no])
 730 ])
 731 ])
 732
 733 #
 734 # LC_FUNC_RCU
 735 #
 736 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
 737 # call_rcu takes three parameters.
 738 #
 739 AC_DEFUN([LC_FUNC_RCU],
 740 [AC_MSG_CHECKING([if kernel have RCU supported])
 741 LB_LINUX_TRY_COMPILE([
 742         #include <linux/rcupdate.h>
 743 ],[],[
 744         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
 745         AC_MSG_RESULT([yes])
 746
 747         AC_MSG_CHECKING([if call_rcu takes three parameters])
 748         LB_LINUX_TRY_COMPILE([
 749                 #include <linux/rcupdate.h>
 750         ],[
 751                 struct rcu_head rh;
 752                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
 753         ],[
 754                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
 755                 AC_MSG_RESULT([yes])
 756         ],[
 757                 AC_MSG_RESULT([no])
 758         ])
 759
 760 ],[
 761         AC_MSG_RESULT([no])
 762 ])
 763 ])
 764
 765 AC_DEFUN([LC_PERCPU_COUNTER],
 766 [AC_MSG_CHECKING([if have struct percpu_counter defined])
 767 LB_LINUX_TRY_COMPILE([
 768         #include <linux/percpu_counter.h>
 769 ],[],[
 770         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
 771         AC_MSG_RESULT([yes])
 772
 773         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
 774         LB_LINUX_TRY_COMPILE([
 775                 #include <linux/percpu_counter.h>
 776         ],[
 777                 struct percpu_counter c;
 778                 percpu_counter_init(&c, 0);
 779         ],[
 780                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
 781                                                    arguments])
 782                 AC_MSG_RESULT([yes])
 783         ],[
 784                 AC_MSG_RESULT([no])
 785         ])
 786 ],[
 787         AC_MSG_RESULT([no])
 788 ])
 789 ])
 790
 791 AC_DEFUN([LC_TASK_CLENV_STORE],
 792 [
 793         AC_MSG_CHECKING([if we can store cl_env in task_struct])
 794         if test x$have_task_clenv_store != xyes ; then
 795                 LC_TASK_CLENV_TUX_INFO
 796         fi
 797 ])
 798
 799 # ~2.6.11
 800
 801 AC_DEFUN([LC_S_TIME_GRAN],
 802 [AC_MSG_CHECKING([if super block has s_time_gran member])
 803 LB_LINUX_TRY_COMPILE([
 804         #include <linux/fs.h>
 805 ],[
 806         struct super_block sb;
 807
 808         return sb.s_time_gran;
 809 ],[
 810         AC_MSG_RESULT([yes])
 811         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
 812 ],[
 813         AC_MSG_RESULT([no])
 814 ])
 815 ])
 816
 817 AC_DEFUN([LC_SB_TIME_GRAN],
 818 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
 819 LB_LINUX_TRY_COMPILE([
 820         #include <linux/fs.h>
 821 ],[
 822         return get_sb_time_gran(NULL);
 823 ],[
 824         AC_MSG_RESULT([yes])
 825         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
 826 ],[
 827         AC_MSG_RESULT([no])
 828 ])
 829 ])
 830
 831 # 2.6.12
 832
 833 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
 834 AC_DEFUN([LC_RW_TREE_LOCK],
 835 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
 836 tmp_flags="$EXTRA_KCFLAGS"
 837 EXTRA_KCFLAGS="-Werror"
 838 LB_LINUX_TRY_COMPILE([
 839         #include <linux/fs.h>
 840 ],[
 841         struct address_space a;
 842
 843         write_lock(&a.tree_lock);
 844 ],[
 845         AC_MSG_RESULT([yes])
 846         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
 847 ],[
 848         AC_MSG_RESULT([no])
 849 ])
 850 EXTRA_KCFLAGS="$tmp_flags"
 851 ])
 852
 853 # LC_EXPORT_SYNCHRONIZE_RCU
 854 # after 2.6.12 synchronize_rcu is preferred over synchronize_kernel
 855 AC_DEFUN([LC_EXPORT_SYNCHRONIZE_RCU],
 856 [LB_CHECK_SYMBOL_EXPORT([synchronize_rcu],
 857 [kernel/rcupdate.c],[
 858         AC_DEFINE(HAVE_SYNCHRONIZE_RCU, 1,
 859                 [in 2.6.12 synchronize_rcu preferred over synchronize_kernel])
 860 ],[
 861 ])
 862 ])
 863
 864 # 2.6.15
 865
 866 # LC_INODE_I_MUTEX
 867 # after 2.6.15 inode have i_mutex intead of i_sem
 868 AC_DEFUN([LC_INODE_I_MUTEX],
 869 [AC_MSG_CHECKING([if inode has i_mutex ])
 870 LB_LINUX_TRY_COMPILE([
 871         #include <linux/mutex.h>
 872         #include <linux/fs.h>
 873         #undef i_mutex
 874 ],[
 875         struct inode i;
 876
 877         mutex_unlock(&i.i_mutex);
 878 ],[
 879         AC_MSG_RESULT(yes)
 880         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 881                 [after 2.6.15 inode have i_mutex intead of i_sem])
 882 ],[
 883         AC_MSG_RESULT(no)
 884 ])
 885 ])
 886
 887 # 2.6.16
 888
 889 # LC_SECURITY_PLUG  # for SLES10 SP2
 890 # check security plug in sles10 sp2 kernel
 891 AC_DEFUN([LC_SECURITY_PLUG],
 892 [AC_MSG_CHECKING([If kernel has security plug support])
 893 LB_LINUX_TRY_COMPILE([
 894         #include <linux/fs.h>
 895 ],[
 896         struct dentry   *dentry;
 897         struct vfsmount *mnt;
 898         struct iattr    *iattr;
 899
 900         notify_change(dentry, mnt, iattr);
 901 ],[
 902         AC_MSG_RESULT(yes)
 903         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
 904                 [SLES10 SP2 use extra parameter in vfs])
 905 ],[
 906         AC_MSG_RESULT(no)
 907 ])
 908 ])
 909
 910 # 2.6.17
 911
 912 # inode have i_private field since 2.6.17
 913 AC_DEFUN([LC_INODE_IPRIVATE],
 914 [AC_MSG_CHECKING([if inode has a i_private field])
 915 LB_LINUX_TRY_COMPILE([
 916 #include <linux/fs.h>
 917 ],[
 918         struct inode i;
 919         i.i_private = NULL;
 920 ],[
 921         AC_MSG_RESULT(yes)
 922         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
 923                 [struct inode has i_private field])
 924 ],[
 925         AC_MSG_RESULT(no)
 926 ])
 927 ])
 928
 929 # LC_DQUOTOFF_MUTEX
 930 # after 2.6.17 dquote use mutex instead if semaphore
 931 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 932 [AC_MSG_CHECKING([use dqonoff_mutex])
 933 LB_LINUX_TRY_COMPILE([
 934         #include <linux/mutex.h>
 935         #include <linux/fs.h>
 936         #include <linux/quota.h>
 937 ],[
 938         struct quota_info dq;
 939
 940         mutex_unlock(&dq.dqonoff_mutex);
 941 ],[
 942         AC_MSG_RESULT(yes)
 943         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 944                 [after 2.6.17 dquote use mutex instead if semaphore])
 945 ],[
 946         AC_MSG_RESULT(no)
 947 ])
 948 ])
 949
 950 # 2.6.18
 951
 952 # LC_NR_PAGECACHE
 953 # 2.6.18 don't export nr_pagecahe
 954 AC_DEFUN([LC_NR_PAGECACHE],
 955 [AC_MSG_CHECKING([kernel export nr_pagecache])
 956 LB_LINUX_TRY_COMPILE([
 957         #include <linux/pagemap.h>
 958 ],[
 959         return atomic_read(&nr_pagecache);
 960 ],[
 961         AC_MSG_RESULT(yes)
 962         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 963                 [is kernel export nr_pagecache])
 964 ],[
 965         AC_MSG_RESULT(no)
 966 ])
 967 ])
 968
 969 #
 970 # LC_STATFS_DENTRY_PARAM
 971 # starting from 2.6.18 linux kernel uses dentry instead of super_block
 972 # for the first parameter of the super_operations->statfs() callback.
 973 #
 974 #
 975 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 976 [AC_MSG_CHECKING([if super_ops.statfs() first parameter is dentry])
 977 tmp_flags="$EXTRA_KCFLAGS"
 978 EXTRA_KCFLAGS="-Werror"
 979 LB_LINUX_TRY_COMPILE([
 980         #include <linux/fs.h>
 981 ],[
 982         ((struct super_operations *)0)->statfs((struct dentry *)0, (struct kstatfs*)0);
 983 ],[
 984         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 985                   [super_ops.statfs() first parameter is dentry])
 986         AC_MSG_RESULT([yes])
 987 ],[
 988         AC_MSG_RESULT([no])
 989 ])
 990 EXTRA_KCFLAGS="$tmp_flags"
 991 ])
 992
 993 #
 994 # LC_VFS_KERN_MOUNT
 995 # starting from 2.6.18 kernel don't export do_kern_mount
 996 # and want to use vfs_kern_mount instead.
 997 #
 998 AC_DEFUN([LC_VFS_KERN_MOUNT],
 999 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
1000 LB_LINUX_TRY_COMPILE([
1001         #include <linux/mount.h>
1002 ],[
1003         vfs_kern_mount(NULL, 0, NULL, NULL);
1004 ],[
1005         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
1006                 [vfs_kern_mount exist in kernel])
1007         AC_MSG_RESULT([yes])
1008 ],[
1009         AC_MSG_RESULT([no])
1010 ])
1011 ])
1012
1013 #
1014 # LC_INVALIDATEPAGE_RETURN_INT
1015 # 2.6.17 changes return type for invalidatepage to 'void' from 'int'
1016 #
1017 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
1018 [AC_MSG_CHECKING([invalidatepage has return int])
1019 LB_LINUX_TRY_COMPILE([
1020         #include <linux/buffer_head.h>
1021 ],[
1022         int rc = block_invalidatepage(NULL, 0);
1023 ],[
1024         AC_MSG_RESULT(yes)
1025         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
1026                 [Define if return type of invalidatepage should be int])
1027 ],[
1028         AC_MSG_RESULT(no)
1029 ])
1030 ])
1031
1032 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
1033 # after 2.6.18 umount_begin has different parameters
1034 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
1035 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
1036 tmp_flags="$EXTRA_KCFLAGS"
1037 EXTRA_KCFLAGS="-Werror"
1038 LB_LINUX_TRY_COMPILE([
1039         #include <linux/fs.h>
1040
1041         struct vfsmount;
1042         static void cfg_umount_begin (struct vfsmount *v, int flags)
1043         {
1044                 ;
1045         }
1046
1047         static struct super_operations cfg_super_operations = {
1048                 .umount_begin   = cfg_umount_begin,
1049         };
1050 ],[
1051         cfg_super_operations.umount_begin(NULL,0);
1052 ],[
1053         AC_MSG_RESULT(yes)
1054         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
1055                 [Define umount_begin need second argument])
1056 ],[
1057         AC_MSG_RESULT(no)
1058 ])
1059 EXTRA_KCFLAGS="$tmp_flags"
1060 ])
1061
1062 # LC_SEQ_LOCK
1063 # after 2.6.18 seq_file has lock intead of sem
1064 AC_DEFUN([LC_SEQ_LOCK],
1065 [AC_MSG_CHECKING([if struct seq_file has lock field])
1066 LB_LINUX_TRY_COMPILE([
1067         #include <linux/seq_file.h>
1068 ],[
1069         struct seq_file seq;
1070
1071         mutex_unlock(&seq.lock);
1072 ],[
1073         AC_MSG_RESULT(yes)
1074         AC_DEFINE(HAVE_SEQ_LOCK, 1,
1075                 [after 2.6.18 seq_file has lock intead of sem])
1076 ],[
1077         AC_MSG_RESULT(NO)
1078 ])
1079 ])
1080
1081 #
1082 # LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1083 #
1084 # No standard kernels export this
1085 #
1086 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1087 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1088 [mm/filemap.c],[
1089 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1090             [filemap_fdatawrite_range is exported by the kernel])
1091 ],[
1092 ])
1093 ])
1094
1095 # LC_FLUSH_OWNER_ID
1096 # starting from 2.6.18 the file_operations .flush
1097 # method has a new "fl_owner_t id" parameter
1098 #
1099 AC_DEFUN([LC_FLUSH_OWNER_ID],
1100 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
1101 LB_LINUX_TRY_COMPILE([
1102         #include <linux/fs.h>
1103 ],[
1104         struct file_operations *fops = NULL;
1105         fl_owner_t id;
1106         int i;
1107
1108         i = fops->flush(NULL, id);
1109 ],[
1110         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
1111                 [file_operations .flush method has an fl_owner_t id])
1112         AC_MSG_RESULT([yes])
1113 ],[
1114         AC_MSG_RESULT([no])
1115 ])
1116 ])
1117
1118 #
1119 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
1120 #
1121 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1122 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1123 #
1124 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1125     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1126          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1127                         [exported invalidate_mapping_pages])],
1128     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1129          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1130                         [exported invalidate_inode_pages])], [
1131        AC_MSG_ERROR([no way to invalidate pages])
1132   ])
1133     ],[])
1134 ])
1135
1136 #2.6.18 + RHEL5 (fc6)
1137
1138 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
1139 AC_DEFUN([LC_PG_FS_MISC],
1140 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1141 LB_LINUX_TRY_COMPILE([
1142         #include <linux/mm.h>
1143         #include <linux/page-flags.h>
1144 ],[
1145         #ifndef PG_fs_misc
1146         #error PG_fs_misc not defined in kernel
1147         #endif
1148 ],[
1149         AC_MSG_RESULT(yes)
1150         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1151                   [is kernel have PG_fs_misc])
1152 ],[
1153         AC_MSG_RESULT(no)
1154 ])
1155 ])
1156
1157 # RHEL5 PageChecked and SetPageChecked defined
1158 AC_DEFUN([LC_PAGE_CHECKED],
1159 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1160 LB_LINUX_TRY_COMPILE([
1161         #include <linux/mm.h>
1162 #ifdef HAVE_LINUX_MMTYPES_H
1163         #include <linux/mm_types.h>
1164 #endif
1165         #include <linux/page-flags.h>
1166 ],[
1167         struct page *p = NULL;
1168
1169         /* before 2.6.26 this define*/
1170         #ifndef PageChecked
1171         /* 2.6.26 use function instead of define for it */
1172         SetPageChecked(p);
1173         PageChecked(p);
1174         #endif
1175 ],[
1176         AC_MSG_RESULT(yes)
1177         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1178                   [does kernel have PageChecked and SetPageChecked])
1179 ],[
1180         AC_MSG_RESULT(no)
1181 ])
1182 ])
1183
1184 #
1185 # LC_LINUX_FIEMAP_H
1186 #
1187 # If we have fiemap.h
1188 # after 2.6.27 use fiemap.h in include/linux
1189 #
1190 AC_DEFUN([LC_LINUX_FIEMAP_H],
1191 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1192         AC_MSG_CHECKING([if fiemap.h can be compiled])
1193         LB_LINUX_TRY_COMPILE([
1194                 #include <linux/types.h>
1195                 #include <linux/fiemap.h>
1196         ],[],[
1197                 AC_MSG_RESULT([yes])
1198                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1199         ],[
1200                 AC_MSG_RESULT([no])
1201         ])
1202 ],
1203 [])
1204 ])
1205
1206 # 2.6.19
1207
1208 # 2.6.19 API changes
1209 # inode don't have i_blksize field
1210 AC_DEFUN([LC_INODE_BLKSIZE],
1211 [AC_MSG_CHECKING([inode has i_blksize field])
1212 LB_LINUX_TRY_COMPILE([
1213 #include <linux/fs.h>
1214 ],[
1215         struct inode i;
1216         i.i_blksize = 0;
1217 ],[
1218         AC_MSG_RESULT(yes)
1219         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1220                 [struct inode has i_blksize field])
1221 ],[
1222         AC_MSG_RESULT(no)
1223 ])
1224 ])
1225
1226 # LC_FILE_WRITEV
1227 # 2.6.19 replaced writev with aio_write
1228 AC_DEFUN([LC_FILE_WRITEV],
1229 [AC_MSG_CHECKING([writev in fops])
1230 LB_LINUX_TRY_COMPILE([
1231         #include <linux/fs.h>
1232 ],[
1233         struct file_operations *fops = NULL;
1234         fops->writev = NULL;
1235 ],[
1236         AC_MSG_RESULT(yes)
1237         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1238                 [use fops->writev])
1239 ],[
1240         AC_MSG_RESULT(no)
1241 ])
1242 ])
1243
1244 # LC_FILE_READV
1245 # 2.6.19 replaced readv with aio_read
1246 AC_DEFUN([LC_FILE_READV],
1247 [AC_MSG_CHECKING([readv in fops])
1248 LB_LINUX_TRY_COMPILE([
1249         #include <linux/fs.h>
1250 ],[
1251         struct file_operations *fops = NULL;
1252         fops->readv = NULL;
1253 ],[
1254         AC_MSG_RESULT(yes)
1255         AC_DEFINE(HAVE_FILE_READV, 1,
1256                 [use fops->readv])
1257 ],[
1258         AC_MSG_RESULT(no)
1259 ])
1260 ])
1261
1262 # 2.6.20
1263
1264 # LC_CANCEL_DIRTY_PAGE
1265 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
1266 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1267         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1268         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
1269         # backport is broken, so ignore it
1270         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
1271            test "$(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
1272                 AC_MSG_RESULT(no)
1273         else
1274                 LB_LINUX_TRY_COMPILE([
1275                         #include <linux/mm.h>
1276                         #include <linux/page-flags.h>
1277 ],[
1278                         cancel_dirty_page(NULL, 0);
1279 ],[
1280                         AC_MSG_RESULT(yes)
1281                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1282                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1283 ],[
1284                         AC_MSG_RESULT(no)
1285 ])
1286         fi
1287 ])
1288
1289 # raid5-zerocopy patch
1290
1291 #
1292 # LC_PAGE_CONSTANT
1293 #
1294 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1295 # it support constant page, which means the page won't be modified during the
1296 # IO.
1297 #
1298 AC_DEFUN([LC_PAGE_CONSTANT],
1299 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1300 LB_LINUX_TRY_COMPILE([
1301         #include <linux/mm.h>
1302         #include <linux/page-flags.h>
1303 ],[
1304         #ifndef PG_constant
1305         #error "Have no raid5 zcopy patch"
1306         #endif
1307 ],[
1308         AC_MSG_RESULT(yes)
1309         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1310 ],[
1311         AC_MSG_RESULT(no);
1312 ])
1313 ])
1314
1315 # 2.6.22
1316
1317 # 2.6.22 lost second parameter for invalidate_bdev
1318 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1319 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1320 LB_LINUX_TRY_COMPILE([
1321         #include <linux/buffer_head.h>
1322 ],[
1323         invalidate_bdev(NULL,0);
1324 ],[
1325         AC_MSG_RESULT([yes])
1326         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1327                 [invalidate_bdev has second argument])
1328 ],[
1329         AC_MSG_RESULT([no])
1330 ])
1331 ])
1332
1333 #
1334 # check for crypto API
1335 #
1336 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1337 [AC_MSG_CHECKING([if kernel has block cipher support])
1338 LB_LINUX_TRY_COMPILE([
1339         #include <linux/err.h>
1340         #include <linux/crypto.h>
1341 ],[
1342         struct crypto_blkcipher *tfm;
1343         tfm = crypto_alloc_blkcipher("aes", 0, sizeof(tfm) );
1344 ],[
1345         AC_MSG_RESULT([yes])
1346         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1347 ],[
1348         AC_MSG_RESULT([no])
1349 ])
1350 ])
1351
1352 #
1353 # check for struct hash_desc
1354 #
1355 AC_DEFUN([LC_STRUCT_HASH_DESC],
1356 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1357 LB_LINUX_TRY_COMPILE([
1358         #include <linux/err.h>
1359         #include <linux/crypto.h>
1360 ],[
1361         struct hash_desc foo;
1362 ],[
1363         AC_MSG_RESULT([yes])
1364         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1365 ],[
1366         AC_MSG_RESULT([no])
1367 ])
1368 ])
1369
1370 #
1371 # check for struct blkcipher_desc
1372 #
1373 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1374 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1375 LB_LINUX_TRY_COMPILE([
1376         #include <linux/err.h>
1377         #include <linux/crypto.h>
1378 ],[
1379         struct blkcipher_desc foo;
1380 ],[
1381         AC_MSG_RESULT([yes])
1382         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1383 ],[
1384         AC_MSG_RESULT([no])
1385 ])
1386 ])
1387
1388 #
1389 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1390 #
1391 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1392 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1393 LB_LINUX_TRY_COMPILE([
1394         #include <linux/fs.h>
1395 ],[
1396         int v = FS_RENAME_DOES_D_MOVE;
1397 ],[
1398         AC_MSG_RESULT([yes])
1399         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1400 ],[
1401         AC_MSG_RESULT([no])
1402 ])
1403 ])
1404
1405 # 2.6.23
1406
1407 # 2.6.23 have return type 'void' for unregister_blkdev
1408 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1409 [AC_MSG_CHECKING([if unregister_blkdev return int])
1410 LB_LINUX_TRY_COMPILE([
1411         #include <linux/fs.h>
1412 ],[
1413         int i = unregister_blkdev(0,NULL);
1414 ],[
1415         AC_MSG_RESULT([yes])
1416         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1417                 [unregister_blkdev return int])
1418 ],[
1419         AC_MSG_RESULT([no])
1420 ])
1421 ])
1422
1423 # 2.6.23 change .sendfile to .splice_read
1424 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1425 [AC_MSG_CHECKING([if kernel has .splice_read])
1426 LB_LINUX_TRY_COMPILE([
1427         #include <linux/fs.h>
1428 ],[
1429         struct file_operations file;
1430
1431         file.splice_read = NULL;
1432 ], [
1433         AC_MSG_RESULT([yes])
1434         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1435                 [kernel has .slice_read])
1436 ],[
1437         AC_MSG_RESULT([no])
1438 ])
1439 ])
1440
1441 # 2.6.23 change .sendfile to .splice_read
1442 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1443 AC_DEFUN([LC_KERNEL_SENDFILE],
1444 [AC_MSG_CHECKING([if kernel has .sendfile])
1445 LB_LINUX_TRY_COMPILE([
1446         #include <linux/fs.h>
1447 ],[
1448         struct file_operations file;
1449
1450         file.sendfile = NULL;
1451 ], [
1452         AC_MSG_RESULT([yes])
1453         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1454                 [kernel has .sendfile])
1455 ],[
1456         AC_MSG_RESULT([no])
1457 ])
1458 ])
1459
1460 # 2.6.23 extract nfs export related data into exportfs.h
1461 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1462 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1463         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1464                 [kernel has include/exportfs.h])
1465 ],[
1466         AC_MSG_RESULT([no])
1467 ])
1468 ])
1469
1470 # 2.6.23 has new page fault handling API
1471 AC_DEFUN([LC_VM_OP_FAULT],
1472 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1473 LB_LINUX_TRY_COMPILE([
1474         #include <linux/mm.h>
1475 ],[
1476         struct vm_operations_struct op;
1477
1478         op.fault = NULL;
1479 ], [
1480         AC_MSG_RESULT([yes])
1481         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1482                 [kernel has .fault in vm_operation_struct])
1483 ],[
1484         AC_MSG_RESULT([no])
1485 ])
1486 ])
1487
1488 # 2.6.23 add code to wait other users to complete before removing procfs entry
1489 AC_DEFUN([LC_PROCFS_USERS],
1490 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1491 LB_LINUX_TRY_COMPILE([
1492         #include <linux/proc_fs.h>
1493 ],[
1494         struct proc_dir_entry pde;
1495
1496         pde.pde_users   = 0;
1497 ],[
1498         AC_MSG_RESULT([yes])
1499         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1500                 [kernel has pde_users member in procfs entry struct])
1501 ],[
1502         AC_MSG_RESULT([no])
1503 ])
1504 ])
1505
1506 # 2.6.23 exports exportfs_decode_fh
1507 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1508 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1509 [fs/exportfs/expfs.c],[
1510         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1511                 [exportfs_decode_fh has been export])
1512 ],[
1513 ])
1514 ])
1515
1516 # 2.6.24
1517
1518 # 2.6.24 need linux/mm_types.h included
1519 AC_DEFUN([LC_HAVE_MMTYPES_H],
1520 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1521         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1522                 [kernel has include/mm_types.h])
1523 ],[
1524         AC_MSG_RESULT([no])
1525 ])
1526 ])
1527
1528 # 2.6.24 has bio_endio with 2 args
1529 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1530 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1531 LB_LINUX_TRY_COMPILE([
1532         #include <linux/bio.h>
1533 ],[
1534         bio_endio(NULL, 0);
1535 ], [
1536         AC_MSG_RESULT([yes])
1537         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1538                 [kernel has bio_endio with 2 args])
1539 ],[
1540         AC_MSG_RESULT([no])
1541 ])
1542 ])
1543
1544 # 2.6.24 has new members in exports struct.
1545 AC_DEFUN([LC_FH_TO_DENTRY],
1546 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1547 LB_LINUX_TRY_COMPILE([
1548         #include <linux/fs.h>
1549 #ifdef HAVE_LINUX_EXPORTFS_H
1550         #include <linux/exportfs.h>
1551 #endif
1552 ],[
1553         struct export_operations exp;
1554         memset(exp.fh_to_dentry, 0, sizeof(exp.fh_to_dentry));
1555 ], [
1556         AC_MSG_RESULT([yes])
1557         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1558                 [kernel has .fh_to_dentry member in export_operations struct])
1559 ],[
1560         AC_MSG_RESULT([no])
1561 ])
1562 ])
1563
1564 # 2.6.24 removes long aged procfs entry -> deleted member
1565 AC_DEFUN([LC_PROCFS_DELETED],
1566 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1567 LB_LINUX_TRY_COMPILE([
1568         #include <linux/proc_fs.h>
1569 ],[
1570         struct proc_dir_entry pde;
1571
1572         pde.deleted = sizeof(pde);
1573 ], [
1574         AC_MSG_RESULT([yes])
1575         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1576                 [kernel has deleted member in procfs entry struct])
1577 ],[
1578         AC_MSG_RESULT([no])
1579 ])
1580 ])
1581
1582 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1583 AC_DEFUN([LC_EXPORT_BDI_INIT],
1584 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1585 [mm/backing-dev.c],[
1586         AC_DEFINE(HAVE_BDI_INIT, 1,
1587                 [bdi_init/bdi_destroy functions are present])
1588 ],[
1589 ])
1590 ])
1591
1592 # 2.6.25
1593
1594 # 2.6.25 change define to inline
1595 AC_DEFUN([LC_MAPPING_CAP_WRITEBACK_DIRTY],
1596 [AC_MSG_CHECKING([if kernel have mapping_cap_writeback_dirty])
1597 LB_LINUX_TRY_COMPILE([
1598         #include <linux/backing-dev.h>
1599 ],[
1600         #ifndef mapping_cap_writeback_dirty
1601         mapping_cap_writeback_dirty(NULL);
1602         #endif
1603 ],[
1604         AC_MSG_RESULT([yes])
1605         AC_DEFINE(HAVE_MAPPING_CAP_WRITEBACK_DIRTY, 1,
1606                 [kernel have mapping_cap_writeback_dirty])
1607 ],[
1608         AC_MSG_RESULT([no])
1609 ])
1610 ])
1611
1612 # 2.6.26
1613
1614 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1615 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1616 [AC_MSG_CHECKING([fs_struct use path structure])
1617 LB_LINUX_TRY_COMPILE([
1618         #include <asm/atomic.h>
1619         #include <linux/spinlock.h>
1620         #include <linux/fs_struct.h>
1621 ],[
1622         struct path path;
1623         struct fs_struct fs;
1624
1625         fs.pwd = path;
1626         memset(&fs, 0, sizeof(fs));
1627 ], [
1628         AC_MSG_RESULT([yes])
1629         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1630                 [fs_struct use path structure])
1631 ],[
1632         AC_MSG_RESULT([no])
1633 ])
1634 ])
1635
1636
1637 #
1638 # 2.6.27
1639 #
1640 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1641 [AC_MSG_CHECKING([inode_operations->permission has two args])
1642 LB_LINUX_TRY_COMPILE([
1643         #include <linux/fs.h>
1644 ],[
1645         struct inode *inode;
1646         inode->i_op->permission(NULL, 0);
1647 ],[
1648         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1649                   [inode_operations->permission has two args])
1650         AC_MSG_RESULT([yes])
1651 ],[
1652         AC_MSG_RESULT([no])
1653 ])
1654 ])
1655
1656 # 2.6.27 has file_remove_suid instead of remove_suid
1657 AC_DEFUN([LC_FILE_REMOVE_SUID],
1658 [AC_MSG_CHECKING([kernel has file_remove_suid])
1659 LB_LINUX_TRY_COMPILE([
1660         #include <linux/fs.h>
1661 ],[
1662         file_remove_suid(NULL);
1663 ],[
1664         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1665                   [kernel have file_remove_suid])
1666         AC_MSG_RESULT([yes])
1667 ],[
1668         AC_MSG_RESULT([no])
1669 ])
1670 ])
1671
1672 # 2.6.27 have new page locking API
1673 AC_DEFUN([LC_TRYLOCKPAGE],
1674 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1675 LB_LINUX_TRY_COMPILE([
1676         #include <linux/pagemap.h>
1677 ],[
1678         trylock_page(NULL);
1679 ],[
1680         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1681                   [kernel uses trylock_page for page lock])
1682         AC_MSG_RESULT([yes])
1683 ],[
1684         AC_MSG_RESULT([no])
1685 ])
1686 ])
1687
1688 # 2.6.27 removed the read_inode from super_operations.
1689 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1690 [AC_MSG_CHECKING([super_operations has a read_inode field])
1691 LB_LINUX_TRY_COMPILE([
1692         #include <linux/fs.h>
1693 ],[
1694         struct super_operations *sop;
1695         sop->read_inode(NULL);
1696 ],[
1697         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1698                 [super_operations has a read_inode])
1699         AC_MSG_RESULT([yes])
1700 ],[
1701         AC_MSG_RESULT([no])
1702 ])
1703 ])
1704
1705 # 2.6.27 has inode_permission instead of permisson
1706 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1707 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1708 [fs/namei.c],[
1709 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1710             [inode_permission is exported by the kernel])
1711 ],[
1712 ])
1713 ])
1714
1715 # 2.6.27 use 5th parameter in quota_on for remount.
1716 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1717 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1718 LB_LINUX_TRY_COMPILE([
1719         #include <linux/quota.h>
1720 ],[
1721         struct quotactl_ops *qop;
1722         qop->quota_on(NULL, 0, 0, NULL, 0);
1723 ],[
1724         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1725                 [quota_on needs 5 paramters])
1726         AC_MSG_RESULT([yes])
1727 ],[
1728         AC_MSG_RESULT([no])
1729 ])
1730 ])
1731
1732 # 2.6.27 use 3th parameter in quota_off for remount.
1733 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1734 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1735 LB_LINUX_TRY_COMPILE([
1736         #include <linux/quota.h>
1737 ],[
1738         struct quotactl_ops *qop;
1739         qop->quota_off(NULL, 0, 0);
1740 ],[
1741         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1742                 [quota_off needs 3 paramters])
1743         AC_MSG_RESULT([yes])
1744 ],[
1745         AC_MSG_RESULT([no])
1746 ])
1747 ])
1748
1749 # 2.6.27 has vfs_dq_off inline function.
1750 AC_DEFUN([LC_VFS_DQ_OFF],
1751 [AC_MSG_CHECKING([vfs_dq_off is defined])
1752 LB_LINUX_TRY_COMPILE([
1753         #include <linux/quotaops.h>
1754 ],[
1755         vfs_dq_off(NULL, 0);
1756 ],[
1757         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1758         AC_MSG_RESULT([yes])
1759 ],[
1760         AC_MSG_RESULT([no])
1761 ])
1762 ])
1763
1764 # LC_LOCK_MAP_ACQUIRE
1765 # after 2.6.27 lock_map_acquire replaces lock_acquire
1766 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1767 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1768 LB_LINUX_TRY_COMPILE([
1769         #include <linux/lockdep.h>
1770 ],[
1771         lock_map_acquire(NULL);
1772 ],[
1773         AC_MSG_RESULT(yes)
1774         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1775                 [lock_map_acquire is defined])
1776 ],[
1777         AC_MSG_RESULT(no)
1778 ])
1779 ])
1780
1781 # 2.6.27.15-2 sles11
1782
1783 # 2.6.27 sles11 remove the bi_hw_segments
1784 AC_DEFUN([LC_BI_HW_SEGMENTS],
1785 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1786 LB_LINUX_TRY_COMPILE([
1787         #include <linux/bio.h>
1788 ],[
1789         struct bio io;
1790         io.bi_hw_segments = sizeof(io);
1791 ],[
1792         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1793                 [struct bio has a bi_hw_segments field])
1794         AC_MSG_RESULT([yes])
1795 ],[
1796         AC_MSG_RESULT([no])
1797 ])
1798 ])
1799
1800 #
1801 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1802 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1803 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1804 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1805         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1806                 [kernel has include/linux/quotaio_v2.h])
1807 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1808                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1809                 [kernel has fs/quotaio_v1.h])
1810 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1811                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1812                 [kernel has fs/quota/quotaio_v2.h])
1813 ],[
1814         AC_MSG_RESULT([no])
1815 ])
1816 ])
1817 ])
1818 ])
1819
1820 # sles10 sp2 need 5 parameter for vfs_symlink
1821 AC_DEFUN([LC_VFS_SYMLINK_5ARGS],
1822 [AC_MSG_CHECKING([vfs_symlink need 5 parameter])
1823 LB_LINUX_TRY_COMPILE([
1824         #include <linux/fs.h>
1825 ],[
1826         struct inode *dir = NULL;
1827         struct dentry *dentry = NULL;
1828         struct vfsmount *mnt = NULL;
1829         const char * path = NULL;
1830         vfs_symlink(dir, dentry, mnt, path, 0);
1831 ],[
1832         AC_DEFINE(HAVE_VFS_SYMLINK_5ARGS, 1,
1833                 [vfs_symlink need 5 parameteres])
1834         AC_MSG_RESULT([yes])
1835 ],[
1836         AC_MSG_RESULT([no])
1837 ])
1838 ])
1839
1840 # 2.6.27 sles11 has sb_any_quota_active
1841 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1842 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1843 LB_LINUX_TRY_COMPILE([
1844         #include <linux/quotaops.h>
1845 ],[
1846         sb_any_quota_active(NULL);
1847 ],[
1848         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1849                 [Kernel has a sb_any_quota_active])
1850         AC_MSG_RESULT([yes])
1851 ],[
1852         AC_MSG_RESULT([no])
1853 ])
1854 ])
1855
1856 # 2.6.27 sles11 has sb_has_quota_active
1857 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1858 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1859 LB_LINUX_TRY_COMPILE([
1860         #include <linux/quotaops.h>
1861 ],[
1862         sb_has_quota_active(NULL, 0);
1863 ],[
1864         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1865                 [Kernel has a sb_has_quota_active])
1866         AC_MSG_RESULT([yes])
1867 ],[
1868         AC_MSG_RESULT([no])
1869 ])
1870 ])
1871
1872 # 2.6.27 exported add_to_page_cache_lru.
1873 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1874 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1875 [mm/filemap.c],[
1876         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1877                 [add_to_page_cache_lru functions are present])
1878 ],[
1879 ])
1880 ])
1881
1882 # 2.6.31
1883
1884 # 2.6.30 x86 node_to_cpumask has been removed. must use cpumask_of_node
1885 AC_DEFUN([LC_EXPORT_CPUMASK_OF_NODE],
1886          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask_map],
1887                                  [arch/$LINUX_ARCH/mm/numa.c],
1888                                  [AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1,
1889                                             [node_to_cpumask_map is exported by
1890                                              the kernel])]) # x86_64
1891          ])
1892
1893 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1894 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1895 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1896 LB_LINUX_TRY_COMPILE([
1897         #include <linux/blkdev.h>
1898 ],[
1899         blk_queue_logical_block_size(NULL, 0);
1900 ],[
1901         AC_MSG_RESULT(yes)
1902         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1903                   [blk_queue_logical_block_size is defined])
1904 ],[
1905         AC_MSG_RESULT(no)
1906 ])
1907 ])
1908
1909 # 2.6.32
1910
1911 # 2.6.32 add a limits member in struct request_queue.
1912 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1913 [AC_MSG_CHECKING([if request_queue has a limits field])
1914 LB_LINUX_TRY_COMPILE([
1915         #include <linux/blkdev.h>
1916 ],[
1917         struct request_queue rq;
1918         rq.limits.io_min = 0;
1919 ],[
1920         AC_MSG_RESULT(yes)
1921         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1922                   [request_queue has a limits field])
1923 ],[
1924         AC_MSG_RESULT(no)
1925 ])
1926 ])
1927
1928 # 2.6.32 has bdi_register() functions.
1929 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1930 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1931 [mm/backing-dev.c],[
1932         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1933                 [bdi_register function is present])
1934 ],[
1935 ])
1936 ])
1937
1938 # 2.6.32 add s_bdi for super block
1939 AC_DEFUN([LC_SB_BDI],
1940 [AC_MSG_CHECKING([if super_block has s_bdi field])
1941 LB_LINUX_TRY_COMPILE([
1942         #include <linux/fs.h>
1943 ],[
1944         struct super_block sb;
1945         sb.s_bdi = NULL;
1946 ],[
1947         AC_MSG_RESULT(yes)
1948         AC_DEFINE(HAVE_SB_BDI, 1,
1949                   [super_block has s_bdi field])
1950 ],[
1951         AC_MSG_RESULT(no)
1952 ])
1953 ])
1954
1955 #  2.6.27.15-2 SuSE 11 sp0 kernels lack the name field for BDI
1956 AC_DEFUN([LC_BDI_NAME],
1957 [AC_MSG_CHECKING([if backing_device_info has name field])
1958 LB_LINUX_TRY_COMPILE([
1959         #include <linux/blkkdev.h>
1960 ],[
1961         struct backing_dev_info bdi;
1962         bdi.name = NULL;
1963 ],[
1964         AC_MSG_RESULT(yes)
1965         AC_DEFINE(HAVE_BDI_NAME, 1,
1966                   [backing_device_info has name field])
1967 ],[
1968         AC_MSG_RESULT(no)
1969 ])
1970 ])
1971
1972 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1973 # check blk_queue_max_sectors and use it until disappear.
1974 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
1975 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
1976 LB_LINUX_TRY_COMPILE([
1977         #include <linux/blkdev.h>
1978 ],[
1979         blk_queue_max_sectors(NULL, 0);
1980 ],[
1981         AC_MSG_RESULT(yes)
1982         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
1983                   [blk_queue_max_sectors is defined])
1984 ],[
1985         AC_MSG_RESULT(no)
1986 ])
1987 ])
1988
1989 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
1990 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
1991 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
1992 LB_LINUX_TRY_COMPILE([
1993         #include <linux/blkdev.h>
1994 ],[
1995         blk_queue_max_segments(NULL, 0);
1996 ],[
1997         AC_MSG_RESULT(yes)
1998         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
1999                   [blk_queue_max_segments is defined])
2000 ],[
2001         AC_MSG_RESULT(no)
2002 ])
2003 ])
2004
2005 #
2006 # LC_QUOTA64
2007 #
2008 # Check if kernel has been patched for 64-bit quota limits support.
2009 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
2010 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
2011 # that in the absence of quotaio_v1.h in the kernel headers.
2012 #
2013 AC_DEFUN([LC_QUOTA64],[
2014         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
2015 tmp_flags="$EXTRA_KCFLAGS"
2016 EXTRA_KCFLAGS="-I$LINUX/fs"
2017         LB_LINUX_TRY_COMPILE([
2018                 #include <linux/kernel.h>
2019                 #include <linux/fs.h>
2020                 #ifdef HAVE_QUOTAIO_H
2021                 # include <linux/quotaio_v2.h>
2022                 int versions[] = V2_INITQVERSIONS_R1;
2023                 struct v2_disk_dqblk_r1 dqblk_r1;
2024                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
2025                 # include <quota/quotaio_v2.h>
2026                 struct v2r1_disk_dqblk dqblk_r1;
2027                 #elif defined(HAVE_FS_QUOTAIO_H)
2028                 # include <quotaio_v2.h>
2029                 struct v2r1_disk_dqblk dqblk_r1;
2030                 #else
2031                 #include <linux/quota.h>
2032                 int ver = QFMT_VFS_V1;
2033                 #endif
2034         ],[],[
2035                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
2036                 AC_MSG_RESULT([yes])
2037         ],[
2038                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
2039                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
2040                 ],[])
2041                 AC_MSG_RESULT([no])
2042         ])
2043 EXTRA_KCFLAGS=$tmp_flags
2044 ])
2045
2046 # 2.6.32 set_cpus_allowed is no more defined if CONFIG_CPUMASK_OFFSTACK=yes
2047 AC_DEFUN([LC_SET_CPUS_ALLOWED],
2048          [AC_MSG_CHECKING([if kernel defines set_cpus_allowed])
2049           LB_LINUX_TRY_COMPILE(
2050                 [#include <linux/sched.h>],
2051                 [struct task_struct *p = NULL;
2052                  cpumask_t mask = { { 0 } };
2053                  (void) set_cpus_allowed(p, mask);],
2054                 [AC_MSG_RESULT([yes])
2055                  AC_DEFINE(HAVE_SET_CPUS_ALLOWED, 1,
2056                            [set_cpus_allowed is exported by the kernel])],
2057                 [AC_MSG_RESULT([no])] )])
2058
2059 #
2060 # LC_D_OBTAIN_ALIAS
2061 # starting from 2.6.28 kernel replaces d_alloc_anon() with
2062 # d_obtain_alias() for getting anonymous dentries
2063 #
2064 AC_DEFUN([LC_D_OBTAIN_ALIAS],
2065 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
2066 LB_LINUX_TRY_COMPILE([
2067         #include <linux/dcache.h>
2068 ],[
2069         d_obtain_alias(NULL);
2070 ],[
2071         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
2072                 [d_obtain_alias exist in kernel])
2073         AC_MSG_RESULT([yes])
2074 ],[
2075         AC_MSG_RESULT([no])
2076 ])
2077 ])
2078
2079 #
2080 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
2081 #
2082 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
2083 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
2084 LB_LINUX_TRY_COMPILE([
2085         #include <asm/atomic.h>
2086         #include <linux/spinlock.h>
2087         #include <linux/fs_struct.h>
2088 ],[
2089         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
2090 ],[
2091         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
2092                   [fs_struct.lock use rwlock])
2093         AC_MSG_RESULT([yes])
2094 ],[
2095         AC_MSG_RESULT([no])
2096 ])
2097 ])
2098
2099 #
2100 # 2.6.36 super_operations add evict_inode method. it hybird of
2101 # delete_inode & clear_inode.
2102 #
2103 AC_DEFUN([LC_SBOPS_EVICT_INODE],
2104 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
2105 LB_LINUX_TRY_COMPILE([
2106         #include <linux/fs.h>
2107 ],[
2108         ((struct super_operations *)0)->evict_inode(NULL);
2109 ],[
2110         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
2111                 [super_operations.evict_inode() is exist in kernel])
2112         AC_MSG_RESULT([yes])
2113 ],[
2114         AC_MSG_RESULT([no])
2115 ])
2116 ])
2117
2118 #
2119 # 2.6.35 file_operations.fsync taken 2 arguments.
2120 #
2121 AC_DEFUN([LC_FILE_FSYNC],
2122 [AC_MSG_CHECKING([if file_operations.fsync taken 2 arguments])
2123 LB_LINUX_TRY_COMPILE([
2124         #include <linux/fs.h>
2125 ],[
2126         ((struct file_operations *)0)->fsync(NULL, 0);
2127 ],[
2128         AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
2129                 [file_operations.fsync taken 2 arguments])
2130         AC_MSG_RESULT([yes])
2131 ],[
2132         AC_MSG_RESULT([no])
2133 ])
2134 ])
2135
2136 #
2137 # 2.6.38 export blkdev_get_by_dev
2138 #
2139 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
2140 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
2141 [fs/block_dev.c],[
2142 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
2143             [blkdev_get_by_dev is exported by the kernel])
2144 ],[
2145 ])
2146 ])
2147
2148 #
2149 # 2.6.38 vfsmount.mnt_count doesn't use atomic_t
2150 #
2151 AC_DEFUN([LC_ATOMIC_MNT_COUNT],
2152 [AC_MSG_CHECKING([if vfsmount.mnt_count is atomic_t])
2153 LB_LINUX_TRY_COMPILE([
2154         #include <asm/atomic.h>
2155         #include <linux/fs.h>
2156         #include <linux/mount.h>
2157 ],[
2158         ((struct vfsmount *)0)->mnt_count = ((atomic_t) { 0 });
2159 ],[
2160         AC_DEFINE(HAVE_ATOMIC_MNT_COUNT, 1,
2161                 [vfsmount.mnt_count is atomic_t])
2162         AC_MSG_RESULT([yes])
2163 ],[
2164         AC_MSG_RESULT([no])
2165 ])
2166 ])
2167
2168 #
2169 # 2.6.38 use path as 4th parameter in quota_on.
2170 #
2171 AC_DEFUN([LC_QUOTA_ON_USE_PATH],
2172 [AC_MSG_CHECKING([quota_on use path as parameter])
2173 tmp_flags="$EXTRA_KCFLAGS"
2174 EXTRA_KCFLAGS="-Werror"
2175 LB_LINUX_TRY_COMPILE([
2176         #include <linux/fs.h>
2177         #include <linux/quota.h>
2178 ],[
2179         ((struct quotactl_ops *)0)->quota_on(NULL, 0, 0, ((struct path*)0));
2180 ],[
2181         AC_DEFINE(HAVE_QUOTA_ON_USE_PATH, 1,
2182                 [quota_on use path as 4th paramter])
2183         AC_MSG_RESULT([yes])
2184 ],[
2185         AC_MSG_RESULT([no])
2186 ])
2187 EXTRA_KCFLAGS="$tmp_flags"
2188 ])
2189
2190 #
2191 # 2.6.39 remove unplug_fn from request_queue.
2192 #
2193 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
2194 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
2195 LB_LINUX_TRY_COMPILE([
2196         #include <linux/blkdev.h>
2197 ],[
2198         struct request_queue rq;
2199         memset(rq.unplug_fn, 0, sizeof(rq.unplug_fn));
2200 ],[
2201         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
2202                   [request_queue has unplug_fn field])
2203         AC_MSG_RESULT([yes])
2204 ],[
2205         AC_MSG_RESULT([no])
2206 ])
2207 ])
2208
2209 #
2210 # 2.6.38 generic_permission taken 4 paremater.
2211 # in fact, it means rcu-walk aware permission bring.
2212 #
2213 AC_DEFUN([LC_GENERIC_PERMISSION],
2214 [AC_MSG_CHECKING([if generic_permission take 4 arguments])
2215 LB_LINUX_TRY_COMPILE([
2216         #include <linux/fs.h>
2217 ],[
2218         generic_permission(NULL, 0, 0, NULL);
2219 ],[
2220         AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
2221                   [generic_permission taken 4 arguments])
2222         AC_MSG_RESULT([yes])
2223 ],[
2224         AC_MSG_RESULT([no])
2225 ])
2226 ])
2227
2228 #
2229 # LC_PROG_LINUX
2230 #
2231 # Lustre linux kernel checks
2232 #
2233 AC_DEFUN([LC_PROG_LINUX],
2234          [LC_LUSTRE_VERSION_H
2235          LC_CONFIG_PINGER
2236          LC_CONFIG_CHECKSUM
2237          LC_CONFIG_LIBLUSTRE_RECOVERY
2238          LC_CONFIG_HEALTH_CHECK_WRITE
2239          LC_CONFIG_LRU_RESIZE
2240          LC_QUOTA_MODULE
2241          LC_LLITE_LLOOP_MODULE
2242
2243          # RHEL4 patches
2244          LC_EXPORT_TRUNCATE_COMPLETE
2245          LC_EXPORT_TRUNCATE_RANGE
2246          LC_EXPORT_D_REHASH_COND
2247          LC_EXPORT___D_REHASH
2248          LC_EXPORT_NODE_TO_CPUMASK
2249
2250          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
2251          LC_STRUCT_STATFS
2252          LC_FILEMAP_POPULATE
2253          LC_D_ADD_UNIQUE
2254          LC_BIT_SPINLOCK_H
2255
2256          LC_XATTR_ACL
2257          LC_POSIX_ACL_XATTR_H
2258          LC_CONST_ACL_SIZE
2259
2260          LC_STRUCT_INTENT_FILE
2261
2262          LC_CAPA_CRYPTO
2263          LC_CONFIG_RMTCLIENT
2264          LC_CONFIG_GSS
2265          LC_FUNC_HAVE_CAN_SLEEP_ARG
2266          LC_FUNC_F_OP_FLOCK
2267          LC_QUOTA_READ
2268          LC_COOKIE_FOLLOW_LINK
2269          LC_FUNC_RCU
2270          LC_PERCPU_COUNTER
2271          LC_TASK_CLENV_STORE
2272
2273          # ~2.6.11
2274          LC_S_TIME_GRAN
2275          LC_SB_TIME_GRAN
2276
2277          # 2.6.12
2278          LC_RW_TREE_LOCK
2279          LC_EXPORT_SYNCHRONIZE_RCU
2280
2281          # 2.6.15
2282          LC_INODE_I_MUTEX
2283
2284          # 2.6.16
2285          LC_SECURITY_PLUG  # for SLES10 SP2
2286
2287          # 2.6.17
2288          LC_INODE_IPRIVATE
2289          LC_DQUOTOFF_MUTEX
2290
2291          # 2.6.18
2292          LC_NR_PAGECACHE
2293          LC_STATFS_DENTRY_PARAM
2294          LC_VFS_KERN_MOUNT
2295          LC_INVALIDATEPAGE_RETURN_INT
2296          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2297          LC_SEQ_LOCK
2298          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
2299          LC_FLUSH_OWNER_ID
2300          if test x$enable_server = xyes ; then
2301                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2302          fi
2303
2304          #2.6.18 + RHEL5 (fc6)
2305          LC_PG_FS_MISC
2306          LC_PAGE_CHECKED
2307          LC_LINUX_FIEMAP_H
2308
2309          # 2.6.19
2310          LC_INODE_BLKSIZE
2311          LC_FILE_WRITEV
2312          LC_FILE_READV
2313
2314          # 2.6.20
2315          LC_CANCEL_DIRTY_PAGE
2316
2317          # raid5-zerocopy patch
2318          LC_PAGE_CONSTANT
2319
2320          # 2.6.22
2321          LC_INVALIDATE_BDEV_2ARG
2322          LC_ASYNC_BLOCK_CIPHER
2323          LC_STRUCT_HASH_DESC
2324          LC_STRUCT_BLKCIPHER_DESC
2325          LC_FS_RENAME_DOES_D_MOVE
2326
2327          # 2.6.23
2328          LC_UNREGISTER_BLKDEV_RETURN_INT
2329          LC_KERNEL_SPLICE_READ
2330          LC_KERNEL_SENDFILE
2331          LC_HAVE_EXPORTFS_H
2332          LC_VM_OP_FAULT
2333          LC_PROCFS_USERS
2334          LC_EXPORTFS_DECODE_FH
2335
2336          # 2.6.24
2337          LC_HAVE_MMTYPES_H
2338          LC_BIO_ENDIO_2ARG
2339          LC_FH_TO_DENTRY
2340          LC_PROCFS_DELETED
2341          LC_EXPORT_BDI_INIT
2342
2343          #2.6.25
2344          LC_MAPPING_CAP_WRITEBACK_DIRTY
2345
2346          # 2.6.26
2347          LC_FS_STRUCT_USE_PATH
2348
2349          # 2.6.27
2350          LC_INODE_PERMISION_2ARGS
2351          LC_FILE_REMOVE_SUID
2352          LC_TRYLOCKPAGE
2353          LC_READ_INODE_IN_SBOPS
2354          LC_EXPORT_INODE_PERMISSION
2355          LC_QUOTA_ON_5ARGS
2356          LC_QUOTA_OFF_3ARGS
2357          LC_VFS_DQ_OFF
2358          LC_LOCK_MAP_ACQUIRE
2359
2360          # 2.6.27.15-2 sles11
2361          LC_BI_HW_SEGMENTS
2362          LC_HAVE_QUOTAIO_H
2363          LC_VFS_SYMLINK_5ARGS
2364          LC_BDI_NAME
2365          LC_SB_ANY_QUOTA_ACTIVE
2366          LC_SB_HAS_QUOTA_ACTIVE
2367          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
2368
2369          # 2.6.30
2370          LC_EXPORT_CPUMASK_OF_NODE
2371
2372          # 2.6.31
2373          LC_BLK_QUEUE_LOG_BLK_SIZE
2374
2375          # 2.6.32
2376          LC_REQUEST_QUEUE_LIMITS
2377          LC_EXPORT_BDI_REGISTER
2378          LC_SB_BDI
2379          LC_BLK_QUEUE_MAX_SECTORS
2380          LC_BLK_QUEUE_MAX_SEGMENTS
2381          LC_SET_CPUS_ALLOWED
2382
2383          # 2.6.35
2384          LC_FILE_FSYNC
2385
2386          # 2.6.36
2387          LC_FS_STRUCT_RWLOCK
2388          LC_SBOPS_EVICT_INODE
2389
2390          # 2.6.38
2391          LC_ATOMIC_MNT_COUNT
2392          LC_BLKDEV_GET_BY_DEV
2393          LC_GENERIC_PERMISSION
2394          LC_QUOTA_ON_USE_PATH
2395
2396          # 2.6.39
2397          LC_REQUEST_QUEUE_UNPLUG_FN
2398
2399          #
2400          if test x$enable_server = xyes ; then
2401              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2402              LC_FUNC_DEV_SET_RDONLY
2403              LC_STACK_SIZE
2404              LC_QUOTA64
2405          fi
2406 ])
2407
2408 #
2409 # LC_CONFIG_CLIENT_SERVER
2410 #
2411 # Build client/server sides of Lustre
2412 #
2413 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2414 [AC_MSG_CHECKING([whether to build Lustre server support])
2415 AC_ARG_ENABLE([server],
2416         AC_HELP_STRING([--disable-server],
2417                         [disable Lustre server support]),
2418         [],[enable_server='yes'])
2419 AC_MSG_RESULT([$enable_server])
2420
2421 AC_MSG_CHECKING([whether to build Lustre client support])
2422 AC_ARG_ENABLE([client],
2423         AC_HELP_STRING([--disable-client],
2424                         [disable Lustre client support]),
2425         [],[enable_client='yes'])
2426 AC_MSG_RESULT([$enable_client])])
2427
2428 #
2429 # LC_CONFIG_LIBLUSTRE
2430 #
2431 # whether to build liblustre
2432 #
2433 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2434 [AC_MSG_CHECKING([whether to build Lustre library])
2435 AC_ARG_ENABLE([liblustre],
2436         AC_HELP_STRING([--disable-liblustre],
2437                         [disable building of Lustre library]),
2438         [],[enable_liblustre=$with_sysio])
2439 AC_MSG_RESULT([$enable_liblustre])
2440 # only build sysio if liblustre is built
2441 with_sysio="$enable_liblustre"
2442
2443 AC_MSG_CHECKING([whether to build liblustre tests])
2444 AC_ARG_ENABLE([liblustre-tests],
2445         AC_HELP_STRING([--enable-liblustre-tests],
2446                         [enable liblustre tests, if --disable-tests is used]),
2447         [],[enable_liblustre_tests=$enable_tests])
2448 if test x$enable_liblustre != xyes ; then
2449    enable_liblustre_tests='no'
2450 fi
2451 AC_MSG_RESULT([$enable_liblustre_tests])
2452
2453 AC_MSG_CHECKING([whether to enable liblustre acl])
2454 AC_ARG_ENABLE([liblustre-acl],
2455         AC_HELP_STRING([--disable-liblustre-acl],
2456                         [disable ACL support for liblustre]),
2457         [],[enable_liblustre_acl=yes])
2458 AC_MSG_RESULT([$enable_liblustre_acl])
2459 if test x$enable_liblustre_acl = xyes ; then
2460   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2461 fi
2462
2463 # 2.6.29 change prepare/commit_write to write_begin/end
2464 AC_DEFUN([LC_WRITE_BEGIN_END],
2465 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2466 LB_LINUX_TRY_COMPILE([
2467         #include <linux/fs.h>
2468         #include <linux/pagemap.h>
2469 #ifdef HAVE_LINUX_MMTYPES_H
2470         #include <linux/mm_types.h>
2471 #endif
2472 ],[
2473         struct address_space_operations aops;
2474         struct page *page;
2475
2476         aops.write_begin = NULL;
2477         aops.write_end = NULL;
2478         page = grab_cache_page_write_begin(NULL, 0, 0);
2479 ], [
2480         AC_MSG_RESULT([yes])
2481         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2482                 [kernel has .write_begin/end])
2483 ],[
2484         AC_MSG_RESULT([no])
2485 ])
2486 ])
2487
2488 # 2.6.29 blkdev_put has 2 arguments
2489 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2490 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2491 LB_LINUX_TRY_COMPILE([
2492         #include <linux/fs.h>
2493 ],[
2494         blkdev_put(NULL, 0);
2495 ],[
2496         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2497                 [blkdev_put needs 2 paramters])
2498         AC_MSG_RESULT([yes])
2499 ],[
2500         AC_MSG_RESULT([no])
2501 ])
2502 ])
2503
2504 # 2.6.29 dentry_open has 4 arguments
2505 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2506 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2507 LB_LINUX_TRY_COMPILE([
2508         #include <linux/fs.h>
2509 ],[
2510         dentry_open(NULL, NULL, 0, NULL);
2511 ],[
2512         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2513                 [dentry_open needs 4 paramters])
2514         AC_MSG_RESULT([yes])
2515 ],[
2516         AC_MSG_RESULT([no])
2517 ])
2518 ])
2519
2520 # 2.6.29 split file and anonymous page queues
2521 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2522 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2523 LB_LINUX_TRY_COMPILE([
2524         #include <linux/mm.h>
2525         #include <linux/pagevec.h>
2526 ],[
2527         struct pagevec lru_pagevec;
2528
2529         pagevec_init(&lru_pagevec, 0);
2530         pagevec_lru_add_file(&lru_pagevec);
2531 ],[
2532         AC_MSG_RESULT([yes])
2533         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2534                 [kernel has .pagevec_lru_add_file])
2535 ],[
2536         AC_MSG_RESULT([no])
2537 ])
2538 ])
2539
2540 #
2541 # --enable-mpitest
2542 #
2543 AC_ARG_ENABLE(mpitests,
2544         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2545                            [include mpi tests]),
2546         [
2547          enable_mpitests=yes
2548          case $enableval in
2549          yes)
2550                 MPICC_WRAPPER=mpicc
2551                 ;;
2552          no)
2553                 enable_mpitests=no
2554                 ;;
2555          *)
2556                 MPICC_WRAPPER=$enableval
2557                  ;;
2558          esac
2559         ],
2560         [
2561         MPICC_WRAPPER=mpicc
2562         enable_mpitests=yes
2563         ]
2564 )
2565
2566 if test x$enable_mpitests != xno; then
2567         AC_MSG_CHECKING([whether mpitests can be built])
2568         oldcc=$CC
2569         CC=$MPICC_WRAPPER
2570         AC_LINK_IFELSE(
2571             [AC_LANG_PROGRAM([[
2572                     #include <mpi.h>
2573                 ]],[[
2574                     int flag;
2575                     MPI_Initialized(&flag);
2576                 ]])],
2577             [
2578                     AC_MSG_RESULT([yes])
2579             ],[
2580                     AC_MSG_RESULT([no])
2581                     enable_mpitests=no
2582         ])
2583         CC=$oldcc
2584 fi
2585 AC_SUBST(MPICC_WRAPPER)
2586
2587 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2588 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2589
2590 LC_CONFIG_PINGER
2591 LC_CONFIG_LIBLUSTRE_RECOVERY
2592 ])
2593
2594 #
2595 # LC_CONFIG_QUOTA
2596 #
2597 # whether to enable quota support global control
2598 #
2599 AC_DEFUN([LC_CONFIG_QUOTA],
2600 [AC_ARG_ENABLE([quota],
2601         AC_HELP_STRING([--enable-quota],
2602                         [enable quota support]),
2603         [],[enable_quota='yes'])
2604 ])
2605
2606 AC_DEFUN([LC_QUOTA],
2607 [#check global
2608 LC_CONFIG_QUOTA
2609 #check for utils
2610 AC_CHECK_HEADER(sys/quota.h,
2611                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2612                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2613 ])
2614
2615 #
2616 # LC_CONFIG_SPLIT
2617 #
2618 # whether to enable split support
2619 #
2620 AC_DEFUN([LC_CONFIG_SPLIT],
2621 [AC_MSG_CHECKING([whether to enable split support])
2622 AC_ARG_ENABLE([split],
2623         AC_HELP_STRING([--enable-split],
2624                         [enable split support]),
2625         [],[enable_split='no'])
2626 AC_MSG_RESULT([$enable_split])
2627 if test x$enable_split != xno; then
2628    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2629 fi
2630 ])
2631
2632 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2633 [AC_MSG_CHECKING([tux_info])
2634 LB_LINUX_TRY_COMPILE([
2635         #include <linux/sched.h>
2636 ],[
2637         struct task_struct task;
2638         &task.tux_info;
2639 ],[
2640         AC_MSG_RESULT([yes])
2641         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2642         have_task_clenv_store='yes'
2643 ],[
2644         AC_MSG_RESULT([no])
2645 ])
2646 ])
2647
2648 #
2649 # LC_LLITE_LLOOP_MODULE
2650 # lloop_llite.ko does not currently work with page sizes
2651 # of 64k or larger.
2652 #
2653 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2654 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2655 LB_LINUX_TRY_COMPILE([
2656         #include <asm/page.h>
2657 ],[
2658         #if PAGE_SIZE >= 65536
2659         #error "PAGE_SIZE >= 65536"
2660         #endif
2661 ],[
2662         enable_llite_lloop_module='yes'
2663         AC_MSG_RESULT([yes])
2664 ],[
2665         enable_llite_lloop_module='no'
2666         AC_MSG_RESULT([no])
2667 ])
2668 ])
2669
2670 #
2671 # LC_CONFIGURE
2672 #
2673 # other configure checks
2674 #
2675 AC_DEFUN([LC_CONFIGURE],
2676 [LC_CONFIG_OBD_BUFFER_SIZE
2677
2678 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2679         CFLAGS="$CFLAGS -Werror"
2680 fi
2681
2682 # maximum MDS thread count
2683 LC_MDS_MAX_THREADS
2684
2685 # include/liblustre.h
2686 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2687
2688 # liblustre/llite_lib.h
2689 AC_CHECK_HEADERS([xtio.h file.h])
2690
2691 # liblustre/dir.c
2692 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2693
2694 # liblustre/lutil.c
2695 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2696 AC_CHECK_FUNCS([inet_ntoa])
2697
2698 # libsysio/src/readlink.c
2699 LC_READLINK_SSIZE_T
2700
2701 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2702 AC_CHECK_HEADERS([linux/random.h], [], [],
2703                  [#ifdef HAVE_LINUX_TYPES_H
2704                   # include <linux/types.h>
2705                   #endif
2706                  ])
2707
2708 # utils/llverfs.c
2709 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2710
2711 # check for -lz support
2712 ZLIB=""
2713 AC_CHECK_LIB([z],
2714              [adler32],
2715              [AC_CHECK_HEADERS([zlib.h],
2716                                [ZLIB="-lz"
2717                                 AC_DEFINE([HAVE_ADLER], 1,
2718                                           [support alder32 checksum type])],
2719                                [AC_MSG_WARN([No zlib-devel package found,
2720                                              unable to use adler32 checksum])])],
2721              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2722 )
2723 AC_SUBST(ZLIB)
2724
2725 # Super safe df
2726 AC_ARG_ENABLE([mindf],
2727       AC_HELP_STRING([--enable-mindf],
2728                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2729       [],[])
2730 if test "$enable_mindf" = "yes" ;  then
2731       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2732 fi
2733
2734 AC_ARG_ENABLE([fail_alloc],
2735         AC_HELP_STRING([--disable-fail-alloc],
2736                 [disable randomly alloc failure]),
2737         [],[enable_fail_alloc=yes])
2738 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2739 AC_MSG_RESULT([$enable_fail_alloc])
2740 if test x$enable_fail_alloc != xno ; then
2741         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2742 fi
2743
2744 AC_ARG_ENABLE([invariants],
2745         AC_HELP_STRING([--enable-invariants],
2746                 [enable invariant checking (cpu intensive)]),
2747         [],[])
2748 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2749 AC_MSG_RESULT([$enable_invariants])
2750 if test x$enable_invariants = xyes ; then
2751         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2752 fi
2753
2754 AC_ARG_ENABLE([lu_ref],
2755         AC_HELP_STRING([--enable-lu_ref],
2756                 [enable lu_ref reference tracking code]),
2757         [],[])
2758 AC_MSG_CHECKING([whether to track references with lu_ref])
2759 AC_MSG_RESULT([$enable_lu_ref])
2760 if test x$enable_lu_ref = xyes ; then
2761         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2762 fi
2763
2764 AC_ARG_ENABLE([pgstate-track],
2765               AC_HELP_STRING([--enable-pgstate-track],
2766                              [enable page state tracking]),
2767               [enable_pgstat_track='yes'],[])
2768 AC_MSG_CHECKING([whether to enable page state tracking])
2769 AC_MSG_RESULT([$enable_pgstat_track])
2770 if test x$enable_pgstat_track = xyes ; then
2771         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2772                   [enable page state tracking code])
2773 fi
2774
2775          #2.6.29
2776          LC_WRITE_BEGIN_END
2777          LC_D_OBTAIN_ALIAS
2778          LC_BLKDEV_PUT_2ARGS
2779          LC_DENTRY_OPEN_4ARGS
2780          LC_PAGEVEC_LRU_ADD_FILE
2781
2782 ])
2783
2784 #
2785 # LC_CONDITIONALS
2786 #
2787 # AM_CONDITIONALS for lustre
2788 #
2789 AC_DEFUN([LC_CONDITIONALS],
2790 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2791 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2792 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2793 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2794 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2795 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2796 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2797 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2798 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2799 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2800 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2801 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2802 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2803 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2804 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2805 ])
2806
2807 #
2808 # LC_CONFIG_FILES
2809 #
2810 # files that should be generated with AC_OUTPUT
2811 #
2812 AC_DEFUN([LC_CONFIG_FILES],
2813 [AC_CONFIG_FILES([
2814 lustre/Makefile
2815 lustre/autoMakefile
2816 lustre/autoconf/Makefile
2817 lustre/conf/Makefile
2818 lustre/contrib/Makefile
2819 lustre/doc/Makefile
2820 lustre/include/Makefile
2821 lustre/include/lustre_ver.h
2822 lustre/include/linux/Makefile
2823 lustre/include/lustre/Makefile
2824 lustre/kernel_patches/targets/2.6-rhel6.target
2825 lustre/kernel_patches/targets/2.6-rhel5.target
2826 lustre/kernel_patches/targets/2.6-sles10.target
2827 lustre/kernel_patches/targets/2.6-sles11.target
2828 lustre/kernel_patches/targets/2.6-oel5.target
2829 lustre/kernel_patches/targets/2.6-fc11.target
2830 lustre/kernel_patches/targets/2.6-fc12.target
2831 lustre/ldlm/Makefile
2832 lustre/fid/Makefile
2833 lustre/fid/autoMakefile
2834 lustre/liblustre/Makefile
2835 lustre/liblustre/tests/Makefile
2836 lustre/liblustre/tests/mpi/Makefile
2837 lustre/llite/Makefile
2838 lustre/llite/autoMakefile
2839 lustre/lclient/Makefile
2840 lustre/lov/Makefile
2841 lustre/lov/autoMakefile
2842 lustre/lvfs/Makefile
2843 lustre/lvfs/autoMakefile
2844 lustre/mdc/Makefile
2845 lustre/mdc/autoMakefile
2846 lustre/lmv/Makefile
2847 lustre/lmv/autoMakefile
2848 lustre/mds/Makefile
2849 lustre/mds/autoMakefile
2850 lustre/mdt/Makefile
2851 lustre/mdt/autoMakefile
2852 lustre/cmm/Makefile
2853 lustre/cmm/autoMakefile
2854 lustre/mdd/Makefile
2855 lustre/mdd/autoMakefile
2856 lustre/fld/Makefile
2857 lustre/fld/autoMakefile
2858 lustre/obdclass/Makefile
2859 lustre/obdclass/autoMakefile
2860 lustre/obdclass/linux/Makefile
2861 lustre/obdecho/Makefile
2862 lustre/obdecho/autoMakefile
2863 lustre/obdfilter/Makefile
2864 lustre/obdfilter/autoMakefile
2865 lustre/osc/Makefile
2866 lustre/osc/autoMakefile
2867 lustre/ost/Makefile
2868 lustre/ost/autoMakefile
2869 lustre/osd-ldiskfs/Makefile
2870 lustre/osd-ldiskfs/autoMakefile
2871 lustre/mgc/Makefile
2872 lustre/mgc/autoMakefile
2873 lustre/mgs/Makefile
2874 lustre/mgs/autoMakefile
2875 lustre/ptlrpc/Makefile
2876 lustre/ptlrpc/autoMakefile
2877 lustre/ptlrpc/gss/Makefile
2878 lustre/ptlrpc/gss/autoMakefile
2879 lustre/quota/Makefile
2880 lustre/quota/autoMakefile
2881 lustre/scripts/Makefile
2882 lustre/tests/Makefile
2883 lustre/tests/mpi/Makefile
2884 lustre/utils/Makefile
2885 lustre/utils/gss/Makefile
2886 lustre/obdclass/darwin/Makefile
2887 ])
2888 ])