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 # LC_CONFIG_BACKINGFS
 169 #
 170 # setup, check the backing filesystem
 171 #
 172 AC_DEFUN([LC_CONFIG_BACKINGFS],
 173 [
 174 BACKINGFS="ldiskfs"
 175
 176 if test x$with_ldiskfs = xno ; then
 177         if test x$linux25$enable_server = xyesyes ; then
 178                 AC_MSG_ERROR([ldiskfs is required for 2.6-based servers.])
 179         fi
 180 else
 181         # ldiskfs is enabled
 182         LB_DEFINE_LDISKFS_OPTIONS
 183 fi #ldiskfs
 184
 185 AC_MSG_CHECKING([which backing filesystem to use])
 186 AC_MSG_RESULT([$BACKINGFS])
 187 AC_SUBST(BACKINGFS)
 188 ])
 189
 190 #
 191 # LC_CONFIG_PINGER
 192 #
 193 # the pinger is temporary, until we have the recovery node in place
 194 #
 195 AC_DEFUN([LC_CONFIG_PINGER],
 196 [AC_MSG_CHECKING([whether to enable pinger support])
 197 AC_ARG_ENABLE([pinger],
 198         AC_HELP_STRING([--disable-pinger],
 199                         [disable recovery pinger support]),
 200         [],[enable_pinger='yes'])
 201 AC_MSG_RESULT([$enable_pinger])
 202 if test x$enable_pinger != xno ; then
 203   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 204 fi
 205 ])
 206
 207 #
 208 # LC_CONFIG_CHECKSUM
 209 #
 210 # do checksum of bulk data between client and OST
 211 #
 212 AC_DEFUN([LC_CONFIG_CHECKSUM],
 213 [AC_MSG_CHECKING([whether to enable data checksum support])
 214 AC_ARG_ENABLE([checksum],
 215        AC_HELP_STRING([--disable-checksum],
 216                        [disable data checksum support]),
 217        [],[enable_checksum='yes'])
 218 AC_MSG_RESULT([$enable_checksum])
 219 if test x$enable_checksum != xno ; then
 220   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 221 fi
 222 ])
 223
 224 #
 225 # LC_CONFIG_LIBLUSTRE_RECOVERY
 226 #
 227 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 228 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 229 AC_ARG_ENABLE([liblustre-recovery],
 230         AC_HELP_STRING([--disable-liblustre-recovery],
 231                         [disable liblustre recovery support]),
 232         [],[enable_liblustre_recovery='yes'])
 233 AC_MSG_RESULT([$enable_liblustre_recovery])
 234 if test x$enable_liblustre_recovery != xno ; then
 235   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 236 fi
 237 ])
 238
 239 #
 240 # LC_CONFIG_HEALTH_CHECK_WRITE
 241 #
 242 # Turn off the actual write to the disk
 243 #
 244 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 245 [AC_MSG_CHECKING([whether to enable a write with the health check])
 246 AC_ARG_ENABLE([health_write],
 247         AC_HELP_STRING([--enable-health_write],
 248                         [enable disk writes when doing health check]),
 249         [],[enable_health_write='no'])
 250 AC_MSG_RESULT([$enable_health_write])
 251 if test x$enable_health_write != xno ; then
 252   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 253 fi
 254 ])
 255
 256 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
 257 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
 258 AC_ARG_ENABLE([lru_resize],
 259         AC_HELP_STRING([--enable-lru-resize],
 260                         [enable lru resize support]),
 261         [],[enable_lru_resize='yes'])
 262 AC_MSG_RESULT([$enable_lru_resize])
 263 if test x$enable_lru_resize != xno; then
 264    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 265 fi
 266 ])
 267
 268 # whether to enable quota support(kernel modules)
 269 AC_DEFUN([LC_QUOTA_MODULE],
 270 [if test x$enable_quota != xno; then
 271     LB_LINUX_CONFIG([QUOTA],[
 272         enable_quota_module='yes'
 273         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
 274     ],[
 275         enable_quota_module='no'
 276         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
 277     ])
 278 fi
 279 ])
 280
 281 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 282 [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 283 [mm/truncate.c],[
 284 AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 285             [kernel export truncate_complete_page])
 286 ],[
 287 ])
 288 ])
 289
 290 AC_DEFUN([LC_EXPORT_TRUNCATE_RANGE],
 291 [LB_CHECK_SYMBOL_EXPORT([truncate_inode_pages_range],
 292 [mm/truncate.c],[
 293 AC_DEFINE(HAVE_TRUNCATE_RANGE, 1,
 294             [kernel export truncate_inode_pages_range])
 295 ],[
 296 ])
 297 ])
 298
 299 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
 300 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
 301 [fs/dcache.c],[
 302 AC_DEFINE(HAVE_D_REHASH_COND, 1,
 303             [d_rehash_cond is exported by the kernel])
 304 ],[
 305 ])
 306 ])
 307
 308 AC_DEFUN([LC_EXPORT___D_REHASH],
 309 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
 310 [fs/dcache.c],[
 311 AC_DEFINE(HAVE___D_REHASH, 1,
 312             [__d_rehash is exported by the kernel])
 313 ],[
 314 ])
 315 ])
 316
 317 # The actual symbol exported varies among architectures, so we need
 318 # to check many symbols (but only in the current architecture.)  No
 319 # matter what symbol is exported, the kernel #defines node_to_cpumask
 320 # to the appropriate function and that's what we use.
 321 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
 322          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
 323                                  [arch/$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_HEADER_LDISKFS_XATTR
 341 #
 342 # CHAOS kernel-devel package will not include fs/ldiskfs/xattr.h
 343 #
 344 AC_DEFUN([LC_HEADER_LDISKFS_XATTR],
 345 [AC_MSG_CHECKING([if ldiskfs has xattr.h header])
 346 tmp_flags="$EXTRA_KCFLAGS"
 347 EXTRA_KCFLAGS="-I$LINUX/fs -I$LDISKFS_DIR -I$LDISKFS_DIR/ldiskfs"
 348 LB_LINUX_TRY_COMPILE([
 349         #include <ldiskfs/xattr.h>
 350 ],[
 351         ldiskfs_xattr_get(NULL, 0, "", NULL, 0);
 352         ldiskfs_xattr_set_handle(NULL, NULL, 0, "", NULL, 0, 0);
 353
 354 ],[
 355         AC_MSG_RESULT([yes])
 356         AC_DEFINE(HAVE_LDISKFS_XATTR_H, 1, [ldiskfs/xattr.h found])
 357 ],[
 358         AC_MSG_RESULT([no])
 359 ])
 360 EXTRA_KCFLAGS="$tmp_flags"
 361 ])
 362
 363 #
 364 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
 365 #
 366 # Check for our patched grab_cache_page_nowait_gfp() function
 367 # after 2.6.29 we can emulate this using add_to_page_cache_lru()
 368 #
 369 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
 370 [LB_CHECK_SYMBOL_EXPORT([grab_cache_page_nowait_gfp],
 371 [mm/filemap.c],[
 372         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
 373                   [kernel exports grab_cache_page_nowait_gfp])
 374         ],
 375         [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
 376         [mm/filemap.c],[
 377                 AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
 378                         [kernel exports add_to_page_cache_lru])
 379         ],[
 380         ])
 381         ])
 382 ])
 383
 384 #
 385 # LC_STRUCT_STATFS
 386 #
 387 # AIX does not have statfs.f_namelen
 388 #
 389 AC_DEFUN([LC_STRUCT_STATFS],
 390 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
 391 LB_LINUX_TRY_COMPILE([
 392         #include <linux/vfs.h>
 393 ],[
 394         struct statfs sfs;
 395         sfs.f_namelen = 1;
 396 ],[
 397         AC_MSG_RESULT([yes])
 398         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
 399 ],[
 400         AC_MSG_RESULT([no])
 401 ])
 402 ])
 403
 404 #
 405 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
 406 #
 407 AC_DEFUN([LC_FILEMAP_POPULATE],
 408 [AC_MSG_CHECKING([for exported filemap_populate])
 409 LB_LINUX_TRY_COMPILE([
 410         #include <asm/page.h>
 411         #include <linux/mm.h>
 412 ],[
 413        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 414 ],[
 415         AC_MSG_RESULT([yes])
 416         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 417 ],[
 418         AC_MSG_RESULT([no])
 419 ])
 420 ])
 421
 422 #
 423 # added in 2.6.15
 424 #
 425 AC_DEFUN([LC_D_ADD_UNIQUE],
 426 [AC_MSG_CHECKING([for d_add_unique])
 427 LB_LINUX_TRY_COMPILE([
 428         #include <linux/dcache.h>
 429 ],[
 430        d_add_unique(NULL, NULL);
 431 ],[
 432         AC_MSG_RESULT([yes])
 433         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
 434 ],[
 435         AC_MSG_RESULT([no])
 436 ])
 437 ])
 438
 439 #
 440 # added in 2.6.17
 441 #
 442 AC_DEFUN([LC_BIT_SPINLOCK_H],
 443 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 444         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 445         LB_LINUX_TRY_COMPILE([
 446                 #include <asm/processor.h>
 447                 #include <linux/spinlock.h>
 448                 #include <linux/bit_spinlock.h>
 449         ],[],[
 450                 AC_MSG_RESULT([yes])
 451                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 452         ],[
 453                 AC_MSG_RESULT([no])
 454         ])
 455 ],
 456 [])
 457 ])
 458
 459 #
 460 # After 2.6.26 we no longer have xattr_acl.h
 461 #
 462 AC_DEFUN([LC_XATTR_ACL],
 463 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
 464         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 465         LB_LINUX_TRY_COMPILE([
 466                 #include <linux/xattr_acl.h>
 467         ],[],[
 468                 AC_MSG_RESULT([yes])
 469                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 470         ],[
 471                 AC_MSG_RESULT([no])
 472         ])
 473 ],
 474 [])
 475 ])
 476
 477 #
 478 # After 2.6.16 the xattr_acl API is removed, and posix_acl is used instead
 479 #
 480 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
 481 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
 482         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
 483         LB_LINUX_TRY_COMPILE([
 484                 #include <linux/fs.h>
 485                 #include <linux/posix_acl_xattr.h>
 486         ],[],[
 487                 AC_MSG_RESULT([yes])
 488                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 489
 490         ],[
 491                 AC_MSG_RESULT([no])
 492         ])
 493 $1
 494 ],[
 495         AC_MSG_RESULT([no])
 496 ])
 497 ])
 498
 499 AC_DEFUN([LC_CONST_ACL_SIZE],
 500 [AC_MSG_CHECKING([calc acl size])
 501 tmp_flags="$CFLAGS"
 502 CFLAGS="$CFLAGS -I$LINUX/include -I$LINUX_OBJ/include -I$LINUX_OBJ/include2 -I$LINUX/arch/`uname -m|sed -e 's/ppc.*/powerpc/' -e 's/x86_64/x86/' -e 's/i.86/x86/'`/include $EXTRA_KCFLAGS"
 503 AC_TRY_RUN([
 504         #define __KERNEL__
 505         #include <linux/autoconf.h>
 506         #include <linux/types.h>
 507         #undef __KERNEL__
 508         // block include
 509         #define __LINUX_POSIX_ACL_H
 510
 511         # ifdef CONFIG_FS_POSIX_ACL
 512         #  ifdef HAVE_XATTR_ACL
 513         #   include <linux/xattr_acl.h>
 514         #  endif
 515         #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
 516         #   include <linux/posix_acl_xattr.h>
 517         #  endif
 518         # endif
 519
 520         #include <lustre_acl.h>
 521
 522         #include <stdio.h>
 523
 524         int main(void)
 525         {
 526             int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
 527             FILE *f = fopen("acl.size","w+");
 528             fprintf(f,"%d", size);
 529             fclose(f);
 530
 531             return 0;
 532         }
 533 ],[
 534         acl_size=`cat acl.size`
 535         AC_MSG_RESULT([ACL size $acl_size])
 536         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
 537 ],[
 538         AC_ERROR([ACL size can't computed])
 539 ])
 540 CFLAGS="$tmp_flags"
 541 ])
 542
 543 # added in 2.6.16
 544 #
 545 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 546 [AC_MSG_CHECKING([if struct open_intent has a file field])
 547 LB_LINUX_TRY_COMPILE([
 548         #include <linux/fs.h>
 549         #include <linux/namei.h>
 550 ],[
 551         struct open_intent intent;
 552         &intent.file;
 553 ],[
 554         AC_MSG_RESULT([yes])
 555         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 556 ],[
 557         AC_MSG_RESULT([no])
 558 ])
 559 ])
 560
 561 #
 562 # LC_CAPA_CRYPTO
 563 #
 564 AC_DEFUN([LC_CAPA_CRYPTO],
 565 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 566         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 567 ])
 568 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 569         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 570 ])
 571 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 572         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 573 ])
 574 ])
 575
 576 #
 577 # LC_CONFIG_RMTCLIENT
 578 #
 579 dnl FIXME
 580 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 581 dnl FIXME
 582 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 583 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 584         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 585 ])
 586 ])
 587
 588 #
 589 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 590 #
 591 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 592 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 593  AC_ARG_ENABLE([gss_keyring],
 594                [AC_HELP_STRING([--disable-gss-keyring],
 595                                [disable gss keyring backend])],
 596                [],[enable_gss_keyring='yes'])
 597  AC_MSG_RESULT([$enable_gss_keyring])
 598
 599  if test x$enable_gss_keyring != xno; then
 600         LB_LINUX_CONFIG_IM([KEYS],[],
 601                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 602
 603         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 604                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 605
 606         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 607                   [Define this if you enable gss keyring backend])
 608  fi
 609 ])
 610
 611 AC_DEFUN([LC_SUNRPC_CACHE],
 612 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 613 LB_LINUX_TRY_COMPILE([
 614         #include <linux/sunrpc/cache.h>
 615 ],[
 616         struct cache_head ch;
 617         &ch.ref.refcount;
 618 ],[
 619         AC_MSG_RESULT([yes])
 620         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 621 ],[
 622         AC_MSG_RESULT([no])
 623 ])
 624 ])
 625
 626 AC_DEFUN([LC_CONFIG_SUNRPC],
 627 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 628                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 629  LC_SUNRPC_CACHE
 630 ])
 631
 632 #
 633 # LC_CONFIG_GSS (default disabled)
 634 #
 635 # Build gss and related tools of Lustre. Currently both kernel and user space
 636 # parts are depend on linux platform.
 637 #
 638 AC_DEFUN([LC_CONFIG_GSS],
 639 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 640  AC_ARG_ENABLE([gss],
 641                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 642                [],[enable_gss='no'])
 643  AC_MSG_RESULT([$enable_gss])
 644
 645  if test x$enable_gss == xyes; then
 646         LC_CONFIG_GSS_KEYRING
 647         LC_CONFIG_SUNRPC
 648
 649         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 650
 651         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 652                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 653         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 654                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 655         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 656                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 657         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 658                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 659
 660         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 661                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 662                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 663                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 664                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 665
 666         AC_SUBST(GSSAPI_LIBS)
 667
 668         AC_KERBEROS_V5
 669  fi
 670 ])
 671
 672 #
 673 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 674 #
 675 # 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
 676 #
 677 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 678 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 679 LB_LINUX_TRY_COMPILE([
 680         #include <linux/fs.h>
 681 ],[
 682         int cansleep;
 683         struct file *file;
 684         struct file_lock *file_lock;
 685         flock_lock_file_wait(file, file_lock, cansleep);
 686 ],[
 687         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 688                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 689         AC_MSG_RESULT([yes])
 690 ],[
 691         AC_MSG_RESULT([no])
 692 ])
 693 ])
 694
 695 #
 696 # LC_FUNC_F_OP_FLOCK
 697 #
 698 # rhel4.2 kernel has f_op->flock field
 699 #
 700 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 701 [AC_MSG_CHECKING([if struct file_operations has flock field])
 702 LB_LINUX_TRY_COMPILE([
 703         #include <linux/fs.h>
 704 ],[
 705         struct file_operations ll_file_operations_flock;
 706         ll_file_operations_flock.flock = NULL;
 707 ],[
 708         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 709                 [struct file_operations has flock field])
 710         AC_MSG_RESULT([yes])
 711 ],[
 712         AC_MSG_RESULT([no])
 713 ])
 714 ])
 715
 716 AC_DEFUN([LC_QUOTA_READ],
 717 [AC_MSG_CHECKING([if kernel supports quota_read])
 718 LB_LINUX_TRY_COMPILE([
 719         #include <linux/fs.h>
 720 ],[
 721         struct super_operations sp;
 722         void *i = (void *)sp.quota_read;
 723 ],[
 724         AC_MSG_RESULT([yes])
 725         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
 726 ],[
 727         AC_MSG_RESULT([no])
 728 ])
 729 ])
 730
 731 #
 732 # LC_COOKIE_FOLLOW_LINK
 733 #
 734 # kernel 2.6.13+ ->follow_link returns a cookie
 735 #
 736
 737 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
 738 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
 739 LB_LINUX_TRY_COMPILE([
 740         #include <linux/fs.h>
 741         #include <linux/namei.h>
 742 ],[
 743         struct dentry dentry;
 744         struct nameidata nd;
 745
 746         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
 747 ],[
 748         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
 749         AC_MSG_RESULT([yes])
 750 ],[
 751         AC_MSG_RESULT([no])
 752 ])
 753 ])
 754
 755 #
 756 # LC_FUNC_RCU
 757 #
 758 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
 759 # call_rcu takes three parameters.
 760 #
 761 AC_DEFUN([LC_FUNC_RCU],
 762 [AC_MSG_CHECKING([if kernel have RCU supported])
 763 LB_LINUX_TRY_COMPILE([
 764         #include <linux/rcupdate.h>
 765 ],[],[
 766         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
 767         AC_MSG_RESULT([yes])
 768
 769         AC_MSG_CHECKING([if call_rcu takes three parameters])
 770         LB_LINUX_TRY_COMPILE([
 771                 #include <linux/rcupdate.h>
 772         ],[
 773                 struct rcu_head rh;
 774                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
 775         ],[
 776                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
 777                 AC_MSG_RESULT([yes])
 778         ],[
 779                 AC_MSG_RESULT([no])
 780         ])
 781
 782 ],[
 783         AC_MSG_RESULT([no])
 784 ])
 785 ])
 786
 787 AC_DEFUN([LC_PERCPU_COUNTER],
 788 [AC_MSG_CHECKING([if have struct percpu_counter defined])
 789 LB_LINUX_TRY_COMPILE([
 790         #include <linux/percpu_counter.h>
 791 ],[],[
 792         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
 793         AC_MSG_RESULT([yes])
 794
 795         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
 796         LB_LINUX_TRY_COMPILE([
 797                 #include <linux/percpu_counter.h>
 798         ],[
 799                 struct percpu_counter c;
 800                 percpu_counter_init(&c, 0);
 801         ],[
 802                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
 803                                                    arguments])
 804                 AC_MSG_RESULT([yes])
 805         ],[
 806                 AC_MSG_RESULT([no])
 807         ])
 808 ],[
 809         AC_MSG_RESULT([no])
 810 ])
 811 ])
 812
 813 AC_DEFUN([LC_TASK_CLENV_STORE],
 814 [
 815         AC_MSG_CHECKING([if we can store cl_env in task_struct])
 816         if test x$have_task_clenv_store != xyes ; then
 817                 LC_TASK_CLENV_TUX_INFO
 818         fi
 819 ])
 820
 821 # ~2.6.11
 822
 823 AC_DEFUN([LC_S_TIME_GRAN],
 824 [AC_MSG_CHECKING([if super block has s_time_gran member])
 825 LB_LINUX_TRY_COMPILE([
 826         #include <linux/fs.h>
 827 ],[
 828         struct super_block sb;
 829
 830         return sb.s_time_gran;
 831 ],[
 832         AC_MSG_RESULT([yes])
 833         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
 834 ],[
 835         AC_MSG_RESULT([no])
 836 ])
 837 ])
 838
 839 AC_DEFUN([LC_SB_TIME_GRAN],
 840 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
 841 LB_LINUX_TRY_COMPILE([
 842         #include <linux/fs.h>
 843 ],[
 844         return get_sb_time_gran(NULL);
 845 ],[
 846         AC_MSG_RESULT([yes])
 847         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
 848 ],[
 849         AC_MSG_RESULT([no])
 850 ])
 851 ])
 852
 853 # 2.6.12
 854
 855 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
 856 AC_DEFUN([LC_RW_TREE_LOCK],
 857 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
 858 tmp_flags="$EXTRA_KCFLAGS"
 859 EXTRA_KCFLAGS="-Werror"
 860 LB_LINUX_TRY_COMPILE([
 861         #include <linux/fs.h>
 862 ],[
 863         struct address_space a;
 864
 865         write_lock(&a.tree_lock);
 866 ],[
 867         AC_MSG_RESULT([yes])
 868         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
 869 ],[
 870         AC_MSG_RESULT([no])
 871 ])
 872 EXTRA_KCFLAGS="$tmp_flags"
 873 ])
 874
 875 # LC_EXPORT_SYNCHRONIZE_RCU
 876 # after 2.6.12 synchronize_rcu is preferred over synchronize_kernel
 877 AC_DEFUN([LC_EXPORT_SYNCHRONIZE_RCU],
 878 [LB_CHECK_SYMBOL_EXPORT([synchronize_rcu],
 879 [kernel/rcupdate.c],[
 880         AC_DEFINE(HAVE_SYNCHRONIZE_RCU, 1,
 881                 [in 2.6.12 synchronize_rcu preferred over synchronize_kernel])
 882 ],[
 883 ])
 884 ])
 885
 886 # 2.6.15
 887
 888 # LC_INODE_I_MUTEX
 889 # after 2.6.15 inode have i_mutex intead of i_sem
 890 AC_DEFUN([LC_INODE_I_MUTEX],
 891 [AC_MSG_CHECKING([if inode has i_mutex ])
 892 LB_LINUX_TRY_COMPILE([
 893         #include <linux/mutex.h>
 894         #include <linux/fs.h>
 895         #undef i_mutex
 896 ],[
 897         struct inode i;
 898
 899         mutex_unlock(&i.i_mutex);
 900 ],[
 901         AC_MSG_RESULT(yes)
 902         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 903                 [after 2.6.15 inode have i_mutex intead of i_sem])
 904 ],[
 905         AC_MSG_RESULT(no)
 906 ])
 907 ])
 908
 909 # 2.6.16
 910
 911 # LC_SECURITY_PLUG  # for SLES10 SP2
 912 # check security plug in sles10 sp2 kernel
 913 AC_DEFUN([LC_SECURITY_PLUG],
 914 [AC_MSG_CHECKING([If kernel has security plug support])
 915 LB_LINUX_TRY_COMPILE([
 916         #include <linux/fs.h>
 917 ],[
 918         struct dentry   *dentry;
 919         struct vfsmount *mnt;
 920         struct iattr    *iattr;
 921
 922         notify_change(dentry, mnt, iattr);
 923 ],[
 924         AC_MSG_RESULT(yes)
 925         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
 926                 [SLES10 SP2 use extra parameter in vfs])
 927 ],[
 928         AC_MSG_RESULT(no)
 929 ])
 930 ])
 931
 932 # 2.6.17
 933
 934 # inode have i_private field since 2.6.17
 935 AC_DEFUN([LC_INODE_IPRIVATE],
 936 [AC_MSG_CHECKING([if inode has a i_private field])
 937 LB_LINUX_TRY_COMPILE([
 938 #include <linux/fs.h>
 939 ],[
 940         struct inode i;
 941         i.i_private = NULL;
 942 ],[
 943         AC_MSG_RESULT(yes)
 944         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
 945                 [struct inode has i_private field])
 946 ],[
 947         AC_MSG_RESULT(no)
 948 ])
 949 ])
 950
 951 # LC_DQUOTOFF_MUTEX
 952 # after 2.6.17 dquote use mutex instead if semaphore
 953 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 954 [AC_MSG_CHECKING([use dqonoff_mutex])
 955 LB_LINUX_TRY_COMPILE([
 956         #include <linux/mutex.h>
 957         #include <linux/fs.h>
 958         #include <linux/quota.h>
 959 ],[
 960         struct quota_info dq;
 961
 962         mutex_unlock(&dq.dqonoff_mutex);
 963 ],[
 964         AC_MSG_RESULT(yes)
 965         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 966                 [after 2.6.17 dquote use mutex instead if semaphore])
 967 ],[
 968         AC_MSG_RESULT(no)
 969 ])
 970 ])
 971
 972 # 2.6.18
 973
 974 # LC_NR_PAGECACHE
 975 # 2.6.18 don't export nr_pagecahe
 976 AC_DEFUN([LC_NR_PAGECACHE],
 977 [AC_MSG_CHECKING([kernel export nr_pagecache])
 978 LB_LINUX_TRY_COMPILE([
 979         #include <linux/pagemap.h>
 980 ],[
 981         return atomic_read(&nr_pagecache);
 982 ],[
 983         AC_MSG_RESULT(yes)
 984         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 985                 [is kernel export nr_pagecache])
 986 ],[
 987         AC_MSG_RESULT(no)
 988 ])
 989 ])
 990
 991 #
 992 # LC_STATFS_DENTRY_PARAM
 993 # starting from 2.6.18 linux kernel uses dentry instead of
 994 # super_block for first vfs_statfs argument
 995 #
 996 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 997 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
 998 LB_LINUX_TRY_COMPILE([
 999         #include <linux/fs.h>
1000 ],[
1001         int vfs_statfs(struct dentry *, struct kstatfs *);
1002 ],[
1003         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
1004                 [first parameter of vfs_statfs is dentry])
1005         AC_MSG_RESULT([yes])
1006 ],[
1007         AC_MSG_RESULT([no])
1008 ])
1009 ])
1010
1011 #
1012 # LC_VFS_KERN_MOUNT
1013 # starting from 2.6.18 kernel don't export do_kern_mount
1014 # and want to use vfs_kern_mount instead.
1015 #
1016 AC_DEFUN([LC_VFS_KERN_MOUNT],
1017 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
1018 LB_LINUX_TRY_COMPILE([
1019         #include <linux/mount.h>
1020 ],[
1021         vfs_kern_mount(NULL, 0, NULL, NULL);
1022 ],[
1023         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
1024                 [vfs_kern_mount exist in kernel])
1025         AC_MSG_RESULT([yes])
1026 ],[
1027         AC_MSG_RESULT([no])
1028 ])
1029 ])
1030
1031 #
1032 # LC_INVALIDATEPAGE_RETURN_INT
1033 # 2.6.17 changes return type for invalidatepage to 'void' from 'int'
1034 #
1035 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
1036 [AC_MSG_CHECKING([invalidatepage has return int])
1037 LB_LINUX_TRY_COMPILE([
1038         #include <linux/buffer_head.h>
1039 ],[
1040         int rc = block_invalidatepage(NULL, 0);
1041 ],[
1042         AC_MSG_RESULT(yes)
1043         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
1044                 [Define if return type of invalidatepage should be int])
1045 ],[
1046         AC_MSG_RESULT(no)
1047 ])
1048 ])
1049
1050 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
1051 # after 2.6.18 umount_begin has different parameters
1052 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
1053 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
1054 tmp_flags="$EXTRA_KCFLAGS"
1055 EXTRA_KCFLAGS="-Werror"
1056 LB_LINUX_TRY_COMPILE([
1057         #include <linux/fs.h>
1058
1059         struct vfsmount;
1060         static void cfg_umount_begin (struct vfsmount *v, int flags)
1061         {
1062                 ;
1063         }
1064
1065         static struct super_operations cfg_super_operations = {
1066                 .umount_begin   = cfg_umount_begin,
1067         };
1068 ],[
1069         cfg_super_operations.umount_begin(NULL,0);
1070 ],[
1071         AC_MSG_RESULT(yes)
1072         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
1073                 [Define umount_begin need second argument])
1074 ],[
1075         AC_MSG_RESULT(no)
1076 ])
1077 EXTRA_KCFLAGS="$tmp_flags"
1078 ])
1079
1080 # LC_SEQ_LOCK
1081 # after 2.6.18 seq_file has lock intead of sem
1082 AC_DEFUN([LC_SEQ_LOCK],
1083 [AC_MSG_CHECKING([if struct seq_file has lock field])
1084 LB_LINUX_TRY_COMPILE([
1085         #include <linux/seq_file.h>
1086 ],[
1087         struct seq_file seq;
1088
1089         mutex_unlock(&seq.lock);
1090 ],[
1091         AC_MSG_RESULT(yes)
1092         AC_DEFINE(HAVE_SEQ_LOCK, 1,
1093                 [after 2.6.18 seq_file has lock intead of sem])
1094 ],[
1095         AC_MSG_RESULT(NO)
1096 ])
1097 ])
1098
1099 #
1100 # LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1101 #
1102 # No standard kernels export this
1103 #
1104 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1105 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1106 [mm/filemap.c],[
1107 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1108             [filemap_fdatawrite_range is exported by the kernel])
1109 ],[
1110 ])
1111 ])
1112
1113 # LC_FLUSH_OWNER_ID
1114 # starting from 2.6.18 the file_operations .flush
1115 # method has a new "fl_owner_t id" parameter
1116 #
1117 AC_DEFUN([LC_FLUSH_OWNER_ID],
1118 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
1119 LB_LINUX_TRY_COMPILE([
1120         #include <linux/fs.h>
1121 ],[
1122         struct file_operations *fops = NULL;
1123         fl_owner_t id;
1124         int i;
1125
1126         i = fops->flush(NULL, id);
1127 ],[
1128         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
1129                 [file_operations .flush method has an fl_owner_t id])
1130         AC_MSG_RESULT([yes])
1131 ],[
1132         AC_MSG_RESULT([no])
1133 ])
1134 ])
1135
1136 #
1137 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
1138 #
1139 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1140 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1141 #
1142 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1143     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1144          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1145                         [exported invalidate_mapping_pages])],
1146     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1147          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1148                         [exported invalidate_inode_pages])], [
1149        AC_MSG_ERROR([no way to invalidate pages])
1150   ])
1151     ],[])
1152 ])
1153
1154 #
1155 # LC_EXT4_DISCARD_PREALLOCATIONS
1156 #
1157 AC_DEFUN([LC_EXT4_DISCARD_PREALLOCATIONS],
1158 [AC_MSG_CHECKING([if ext4_discard_preallocatoins defined])
1159 tmp_flags="$EXTRA_KCFLAGS"
1160 EXTRA_KCFLAGS="-I$LINUX/fs"
1161 LB_LINUX_TRY_COMPILE([
1162         #include <ext4/ext4.h>
1163 ],[
1164         struct inode i;
1165         ext4_discard_preallocations(&i);
1166 ],[
1167         AC_MSG_RESULT(yes)
1168         AC_DEFINE(LDISKFS_DISCARD_PREALLOCATIONS, 1,
1169                   [ext4_discard_preacllocations defined])
1170 ],[
1171         AC_MSG_RESULT(no)
1172 ])
1173 EXTRA_KCFLAGS="$tmp_flags"
1174 ])
1175
1176 #
1177 # LC_EXT_INSERT_EXTENT_WITH_5ARGS
1178 #
1179 AC_DEFUN([LC_EXT_INSERT_EXTENT_WITH_5ARGS],
1180 [AC_MSG_CHECKING([ext4_ext_insert_extent needs 5 arguments])
1181 tmp_flags="$EXTRA_KCFLAGS"
1182 EXTRA_KCFLAGS="-I$LINUX/fs"
1183 LB_LINUX_TRY_COMPILE([
1184         #include <ext4/ext4_extents.h>
1185 ],[
1186         ext4_ext_insert_extent(NULL, NULL, NULL, NULL, 0);
1187 ],[
1188         AC_DEFINE([EXT_INSERT_EXTENT_WITH_5ARGS], 1,
1189                   [ext4_ext_insert_exent needs 5 arguments])
1190         AC_MSG_RESULT([yes])
1191 ],[
1192         AC_MSG_RESULT([no])
1193 ])
1194 EXTRA_KCFLAGS="$tmp_flags"
1195 ])
1196
1197 #2.6.18 + RHEL5 (fc6)
1198
1199 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
1200 AC_DEFUN([LC_PG_FS_MISC],
1201 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1202 LB_LINUX_TRY_COMPILE([
1203         #include <linux/mm.h>
1204         #include <linux/page-flags.h>
1205 ],[
1206         #ifndef PG_fs_misc
1207         #error PG_fs_misc not defined in kernel
1208         #endif
1209 ],[
1210         AC_MSG_RESULT(yes)
1211         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1212                   [is kernel have PG_fs_misc])
1213 ],[
1214         AC_MSG_RESULT(no)
1215 ])
1216 ])
1217
1218 # RHEL5 PageChecked and SetPageChecked defined
1219 AC_DEFUN([LC_PAGE_CHECKED],
1220 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1221 LB_LINUX_TRY_COMPILE([
1222         #include <linux/autoconf.h>
1223 #ifdef HAVE_LINUX_MMTYPES_H
1224         #include <linux/mm_types.h>
1225 #endif
1226         #include <linux/page-flags.h>
1227 ],[
1228         struct page *p;
1229
1230         /* before 2.6.26 this define*/
1231         #ifndef PageChecked
1232         /* 2.6.26 use function instead of define for it */
1233         SetPageChecked(p);
1234         PageChecked(p);
1235         #endif
1236 ],[
1237         AC_MSG_RESULT(yes)
1238         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1239                   [does kernel have PageChecked and SetPageChecked])
1240 ],[
1241         AC_MSG_RESULT(no)
1242 ])
1243 ])
1244
1245 #
1246 # LC_LINUX_FIEMAP_H
1247 #
1248 # If we have fiemap.h
1249 # after 2.6.27 use fiemap.h in include/linux
1250 #
1251 AC_DEFUN([LC_LINUX_FIEMAP_H],
1252 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1253         AC_MSG_CHECKING([if fiemap.h can be compiled])
1254         LB_LINUX_TRY_COMPILE([
1255                 #include <linux/types.h>
1256                 #include <linux/fiemap.h>
1257         ],[],[
1258                 AC_MSG_RESULT([yes])
1259                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1260         ],[
1261                 AC_MSG_RESULT([no])
1262         ])
1263 ],
1264 [])
1265 ])
1266
1267 # 2.6.19
1268
1269 # 2.6.19 API changes
1270 # inode don't have i_blksize field
1271 AC_DEFUN([LC_INODE_BLKSIZE],
1272 [AC_MSG_CHECKING([inode has i_blksize field])
1273 LB_LINUX_TRY_COMPILE([
1274 #include <linux/fs.h>
1275 ],[
1276         struct inode i;
1277         i.i_blksize = 0;
1278 ],[
1279         AC_MSG_RESULT(yes)
1280         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1281                 [struct inode has i_blksize field])
1282 ],[
1283         AC_MSG_RESULT(no)
1284 ])
1285 ])
1286
1287 # LC_VFS_READDIR_U64_INO
1288 # 2.6.19 use u64 for inode number instead of inode_t
1289 AC_DEFUN([LC_VFS_READDIR_U64_INO],
1290 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
1291 tmp_flags="$EXTRA_KCFLAGS"
1292 EXTRA_KCFLAGS="-Werror"
1293 LB_LINUX_TRY_COMPILE([
1294 #include <linux/fs.h>
1295         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
1296                       u64 ino, unsigned int d_type)
1297         {
1298                 return 0;
1299         }
1300 ],[
1301         filldir_t filter;
1302
1303         filter = fillonedir;
1304         return 1;
1305 ],[
1306         AC_MSG_RESULT(yes)
1307         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
1308                 [if vfs_readdir need 64bit inode number])
1309 ],[
1310         AC_MSG_RESULT(no)
1311 ])
1312 EXTRA_KCFLAGS="$tmp_flags"
1313 ])
1314
1315 # LC_FILE_WRITEV
1316 # 2.6.19 replaced writev with aio_write
1317 AC_DEFUN([LC_FILE_WRITEV],
1318 [AC_MSG_CHECKING([writev in fops])
1319 LB_LINUX_TRY_COMPILE([
1320         #include <linux/fs.h>
1321 ],[
1322         struct file_operations *fops = NULL;
1323         fops->writev = NULL;
1324 ],[
1325         AC_MSG_RESULT(yes)
1326         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1327                 [use fops->writev])
1328 ],[
1329         AC_MSG_RESULT(no)
1330 ])
1331 ])
1332
1333 # LC_FILE_READV
1334 # 2.6.19 replaced readv with aio_read
1335 AC_DEFUN([LC_FILE_READV],
1336 [AC_MSG_CHECKING([readv in fops])
1337 LB_LINUX_TRY_COMPILE([
1338         #include <linux/fs.h>
1339 ],[
1340         struct file_operations *fops = NULL;
1341         fops->readv = NULL;
1342 ],[
1343         AC_MSG_RESULT(yes)
1344         AC_DEFINE(HAVE_FILE_READV, 1,
1345                 [use fops->readv])
1346 ],[
1347         AC_MSG_RESULT(no)
1348 ])
1349 ])
1350
1351 # 2.6.20
1352
1353 # LC_CANCEL_DIRTY_PAGE
1354 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
1355 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1356         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1357         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
1358         # backport is broken, so ignore it
1359         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
1360            test "$(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
1361                 AC_MSG_RESULT(no)
1362         else
1363                 LB_LINUX_TRY_COMPILE([
1364                         #include <linux/mm.h>
1365                         #include <linux/page-flags.h>
1366 ],[
1367                         cancel_dirty_page(NULL, 0);
1368 ],[
1369                         AC_MSG_RESULT(yes)
1370                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1371                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1372 ],[
1373                         AC_MSG_RESULT(no)
1374 ])
1375         fi
1376 ])
1377
1378 # raid5-zerocopy patch
1379
1380 #
1381 # LC_PAGE_CONSTANT
1382 #
1383 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1384 # it support constant page, which means the page won't be modified during the
1385 # IO.
1386 #
1387 AC_DEFUN([LC_PAGE_CONSTANT],
1388 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1389 LB_LINUX_TRY_COMPILE([
1390         #include <linux/mm.h>
1391         #include <linux/page-flags.h>
1392 ],[
1393         #ifndef PG_constant
1394         #error "Have no raid5 zcopy patch"
1395         #endif
1396 ],[
1397         AC_MSG_RESULT(yes)
1398         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1399 ],[
1400         AC_MSG_RESULT(no);
1401 ])
1402 ])
1403
1404 # 2.6.22
1405
1406 # 2.6.22 lost second parameter for invalidate_bdev
1407 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1408 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1409 LB_LINUX_TRY_COMPILE([
1410         #include <linux/buffer_head.h>
1411 ],[
1412         invalidate_bdev(NULL,0);
1413 ],[
1414         AC_MSG_RESULT([yes])
1415         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1416                 [invalidate_bdev has second argument])
1417 ],[
1418         AC_MSG_RESULT([no])
1419 ])
1420 ])
1421
1422 #
1423 # check for crypto API
1424 #
1425 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1426 [AC_MSG_CHECKING([if kernel has block cipher support])
1427 LB_LINUX_TRY_COMPILE([
1428         #include <linux/err.h>
1429         #include <linux/crypto.h>
1430 ],[
1431         struct crypto_blkcipher *tfm;
1432         tfm = crypto_alloc_blkcipher("aes", 0, 0 );
1433 ],[
1434         AC_MSG_RESULT([yes])
1435         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1436 ],[
1437         AC_MSG_RESULT([no])
1438 ])
1439 ])
1440
1441 #
1442 # check for struct hash_desc
1443 #
1444 AC_DEFUN([LC_STRUCT_HASH_DESC],
1445 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1446 LB_LINUX_TRY_COMPILE([
1447         #include <linux/err.h>
1448         #include <linux/crypto.h>
1449 ],[
1450         struct hash_desc foo;
1451 ],[
1452         AC_MSG_RESULT([yes])
1453         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1454 ],[
1455         AC_MSG_RESULT([no])
1456 ])
1457 ])
1458
1459 #
1460 # check for struct blkcipher_desc
1461 #
1462 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1463 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1464 LB_LINUX_TRY_COMPILE([
1465         #include <linux/err.h>
1466         #include <linux/crypto.h>
1467 ],[
1468         struct blkcipher_desc foo;
1469 ],[
1470         AC_MSG_RESULT([yes])
1471         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1472 ],[
1473         AC_MSG_RESULT([no])
1474 ])
1475 ])
1476
1477 #
1478 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1479 #
1480 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1481 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1482 LB_LINUX_TRY_COMPILE([
1483         #include <linux/fs.h>
1484 ],[
1485         int v = FS_RENAME_DOES_D_MOVE;
1486 ],[
1487         AC_MSG_RESULT([yes])
1488         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1489 ],[
1490         AC_MSG_RESULT([no])
1491 ])
1492 ])
1493
1494 # 2.6.23
1495
1496 # 2.6.23 have return type 'void' for unregister_blkdev
1497 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1498 [AC_MSG_CHECKING([if unregister_blkdev return int])
1499 LB_LINUX_TRY_COMPILE([
1500         #include <linux/fs.h>
1501 ],[
1502         int i = unregister_blkdev(0,NULL);
1503 ],[
1504         AC_MSG_RESULT([yes])
1505         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1506                 [unregister_blkdev return int])
1507 ],[
1508         AC_MSG_RESULT([no])
1509 ])
1510 ])
1511
1512 # 2.6.23 change .sendfile to .splice_read
1513 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1514 [AC_MSG_CHECKING([if kernel has .splice_read])
1515 LB_LINUX_TRY_COMPILE([
1516         #include <linux/fs.h>
1517 ],[
1518         struct file_operations file;
1519
1520         file.splice_read = NULL;
1521 ], [
1522         AC_MSG_RESULT([yes])
1523         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1524                 [kernel has .slice_read])
1525 ],[
1526         AC_MSG_RESULT([no])
1527 ])
1528 ])
1529
1530 # 2.6.23 change .sendfile to .splice_read
1531 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1532 AC_DEFUN([LC_KERNEL_SENDFILE],
1533 [AC_MSG_CHECKING([if kernel has .sendfile])
1534 LB_LINUX_TRY_COMPILE([
1535         #include <linux/fs.h>
1536 ],[
1537         struct file_operations file;
1538
1539         file.sendfile = NULL;
1540 ], [
1541         AC_MSG_RESULT([yes])
1542         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1543                 [kernel has .sendfile])
1544 ],[
1545         AC_MSG_RESULT([no])
1546 ])
1547 ])
1548
1549 # 2.6.23 extract nfs export related data into exportfs.h
1550 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1551 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1552         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1553                 [kernel has include/exportfs.h])
1554 ],[
1555         AC_MSG_RESULT([no])
1556 ])
1557 ])
1558
1559 # 2.6.23 has new page fault handling API
1560 AC_DEFUN([LC_VM_OP_FAULT],
1561 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1562 LB_LINUX_TRY_COMPILE([
1563         #include <linux/mm.h>
1564 ],[
1565         struct vm_operations_struct op;
1566
1567         op.fault = NULL;
1568 ], [
1569         AC_MSG_RESULT([yes])
1570         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1571                 [kernel has .fault in vm_operation_struct])
1572 ],[
1573         AC_MSG_RESULT([no])
1574 ])
1575 ])
1576
1577 # 2.6.23 add code to wait other users to complete before removing procfs entry
1578 AC_DEFUN([LC_PROCFS_USERS],
1579 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1580 LB_LINUX_TRY_COMPILE([
1581         #include <linux/proc_fs.h>
1582 ],[
1583         struct proc_dir_entry pde;
1584
1585         pde.pde_users   = 0;
1586 ],[
1587         AC_MSG_RESULT([yes])
1588         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1589                 [kernel has pde_users member in procfs entry struct])
1590 ],[
1591         AC_MSG_RESULT([no])
1592 ])
1593 ])
1594
1595 # 2.6.23 exports exportfs_decode_fh
1596 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1597 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1598 [fs/exportfs/expfs.c],[
1599         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1600                 [exportfs_decode_fh has been export])
1601 ],[
1602 ])
1603 ])
1604
1605 # 2.6.24
1606
1607 # 2.6.24 need linux/mm_types.h included
1608 AC_DEFUN([LC_HAVE_MMTYPES_H],
1609 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1610         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1611                 [kernel has include/mm_types.h])
1612 ],[
1613         AC_MSG_RESULT([no])
1614 ])
1615 ])
1616
1617 # 2.6.24 has bio_endio with 2 args
1618 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1619 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1620 LB_LINUX_TRY_COMPILE([
1621         #include <linux/bio.h>
1622 ],[
1623         bio_endio(NULL, 0);
1624 ], [
1625         AC_MSG_RESULT([yes])
1626         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1627                 [kernel has bio_endio with 2 args])
1628 ],[
1629         AC_MSG_RESULT([no])
1630 ])
1631 ])
1632
1633 # 2.6.24 has new members in exports struct.
1634 AC_DEFUN([LC_FH_TO_DENTRY],
1635 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1636 LB_LINUX_TRY_COMPILE([
1637 #ifdef HAVE_LINUX_EXPORTFS_H
1638         #include <linux/exportfs.h>
1639 #else
1640         #include <linux/fs.h>
1641 #endif
1642 ],[
1643         struct export_operations exp;
1644
1645         exp.fh_to_dentry   = NULL;
1646 ], [
1647         AC_MSG_RESULT([yes])
1648         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1649                 [kernel has .fh_to_dentry member in export_operations struct])
1650 ],[
1651         AC_MSG_RESULT([no])
1652 ])
1653 ])
1654
1655 # 2.6.24 removes long aged procfs entry -> deleted member
1656 AC_DEFUN([LC_PROCFS_DELETED],
1657 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1658 LB_LINUX_TRY_COMPILE([
1659         #include <linux/proc_fs.h>
1660 ],[
1661         struct proc_dir_entry pde;
1662
1663         pde.deleted   = NULL;
1664 ], [
1665         AC_MSG_RESULT([yes])
1666         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1667                 [kernel has deleted member in procfs entry struct])
1668 ],[
1669         AC_MSG_RESULT([no])
1670 ])
1671 ])
1672
1673 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1674 AC_DEFUN([LC_EXPORT_BDI_INIT],
1675 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1676 [mm/backing-dev.c],[
1677         AC_DEFINE(HAVE_BDI_INIT, 1,
1678                 [bdi_init/bdi_destroy functions are present])
1679 ],[
1680 ])
1681 ])
1682
1683 # 2.6.25
1684
1685 # 2.6.25 change define to inline
1686 AC_DEFUN([LC_MAPPING_CAP_WRITEBACK_DIRTY],
1687 [AC_MSG_CHECKING([if kernel have mapping_cap_writeback_dirty])
1688 LB_LINUX_TRY_COMPILE([
1689         #include <linux/backing-dev.h>
1690 ],[
1691         #ifndef mapping_cap_writeback_dirty
1692         mapping_cap_writeback_dirty(NULL);
1693         #endif
1694 ],[
1695         AC_MSG_RESULT([yes])
1696         AC_DEFINE(HAVE_MAPPING_CAP_WRITEBACK_DIRTY, 1,
1697                 [kernel have mapping_cap_writeback_dirty])
1698 ],[
1699         AC_MSG_RESULT([no])
1700 ])
1701 ])
1702
1703 # 2.6.26
1704
1705 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1706 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1707 [AC_MSG_CHECKING([fs_struct use path structure])
1708 LB_LINUX_TRY_COMPILE([
1709         #include <asm/atomic.h>
1710         #include <linux/spinlock.h>
1711         #include <linux/fs_struct.h>
1712 ],[
1713         struct path path;
1714         struct fs_struct fs;
1715
1716         fs.pwd = path;
1717 ], [
1718         AC_MSG_RESULT([yes])
1719         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1720                 [fs_struct use path structure])
1721 ],[
1722         AC_MSG_RESULT([no])
1723 ])
1724 ])
1725
1726 # 2.6.27
1727
1728 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1729 [AC_MSG_CHECKING([inode_operations->permission has two args])
1730 LB_LINUX_TRY_COMPILE([
1731         #include <linux/fs.h>
1732 ],[
1733         struct inode *inode;
1734
1735         inode->i_op->permission(NULL,0);
1736 ],[
1737         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1738                   [inode_operations->permission has two args])
1739         AC_MSG_RESULT([yes])
1740 ],[
1741         AC_MSG_RESULT([no])
1742 ])
1743 ])
1744
1745 # 2.6.27 has file_remove_suid instead of remove_suid
1746 AC_DEFUN([LC_FILE_REMOVE_SUID],
1747 [AC_MSG_CHECKING([kernel has file_remove_suid])
1748 LB_LINUX_TRY_COMPILE([
1749         #include <linux/fs.h>
1750 ],[
1751         file_remove_suid(NULL);
1752 ],[
1753         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1754                   [kernel have file_remove_suid])
1755         AC_MSG_RESULT([yes])
1756 ],[
1757         AC_MSG_RESULT([no])
1758 ])
1759 ])
1760
1761 # 2.6.27 have new page locking API
1762 AC_DEFUN([LC_TRYLOCKPAGE],
1763 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1764 LB_LINUX_TRY_COMPILE([
1765         #include <linux/pagemap.h>
1766 ],[
1767         trylock_page(NULL);
1768 ],[
1769         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1770                   [kernel uses trylock_page for page lock])
1771         AC_MSG_RESULT([yes])
1772 ],[
1773         AC_MSG_RESULT([no])
1774 ])
1775 ])
1776
1777 # 2.6.27 removed the read_inode from super_operations.
1778 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1779 [AC_MSG_CHECKING([super_operations has a read_inode field])
1780 LB_LINUX_TRY_COMPILE([
1781         #include <linux/fs.h>
1782 ],[
1783         struct super_operations *sop;
1784         sop->read_inode(NULL);
1785 ],[
1786         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1787                 [super_operations has a read_inode])
1788         AC_MSG_RESULT([yes])
1789 ],[
1790         AC_MSG_RESULT([no])
1791 ])
1792 ])
1793
1794 # 2.6.27 has inode_permission instead of permisson
1795 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1796 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1797 [fs/namei.c],[
1798 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1799             [inode_permission is exported by the kernel])
1800 ],[
1801 ])
1802 ])
1803
1804 # 2.6.27 use 5th parameter in quota_on for remount.
1805 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1806 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1807 LB_LINUX_TRY_COMPILE([
1808         #include <linux/quota.h>
1809 ],[
1810         struct quotactl_ops *qop;
1811         qop->quota_on(NULL, 0, 0, NULL, 0);
1812 ],[
1813         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1814                 [quota_on needs 5 paramters])
1815         AC_MSG_RESULT([yes])
1816 ],[
1817         AC_MSG_RESULT([no])
1818 ])
1819 ])
1820
1821 # 2.6.27 use 3th parameter in quota_off for remount.
1822 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1823 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1824 LB_LINUX_TRY_COMPILE([
1825         #include <linux/quota.h>
1826 ],[
1827         struct quotactl_ops *qop;
1828         qop->quota_off(NULL, 0, 0);
1829 ],[
1830         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1831                 [quota_off needs 3 paramters])
1832         AC_MSG_RESULT([yes])
1833 ],[
1834         AC_MSG_RESULT([no])
1835 ])
1836 ])
1837
1838 # 2.6.27 has vfs_dq_off inline function.
1839 AC_DEFUN([LC_VFS_DQ_OFF],
1840 [AC_MSG_CHECKING([vfs_dq_off is defined])
1841 LB_LINUX_TRY_COMPILE([
1842         #include <linux/quotaops.h>
1843 ],[
1844         vfs_dq_off(NULL, 0);
1845 ],[
1846         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1847         AC_MSG_RESULT([yes])
1848 ],[
1849         AC_MSG_RESULT([no])
1850 ])
1851 ])
1852
1853 # LC_LOCK_MAP_ACQUIRE
1854 # after 2.6.27 lock_map_acquire replaces lock_acquire
1855 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1856 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1857 LB_LINUX_TRY_COMPILE([
1858         #include <linux/lockdep.h>
1859 ],[
1860         lock_map_acquire(NULL);
1861 ],[
1862         AC_MSG_RESULT(yes)
1863         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1864                 [lock_map_acquire is defined])
1865 ],[
1866         AC_MSG_RESULT(no)
1867 ])
1868 ])
1869
1870 # 2.6.27.15-2 sles11
1871
1872 # 2.6.27 sles11 remove the bi_hw_segments
1873 AC_DEFUN([LC_BI_HW_SEGMENTS],
1874 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1875 LB_LINUX_TRY_COMPILE([
1876         #include <linux/bio.h>
1877 ],[
1878         struct bio io;
1879         io.bi_hw_segments = 0;
1880 ],[
1881         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1882                 [struct bio has a bi_hw_segments field])
1883         AC_MSG_RESULT([yes])
1884 ],[
1885         AC_MSG_RESULT([no])
1886 ])
1887 ])
1888
1889 #
1890 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1891 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1892 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1893 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1894         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1895                 [kernel has include/linux/quotaio_v2.h])
1896 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1897                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1898                 [kernel has fs/quotaio_v1.h])
1899 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1900                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1901                 [kernel has fs/quota/quotaio_v2.h])
1902 ],[
1903         AC_MSG_RESULT([no])
1904 ])
1905 ])
1906 ])
1907 ])
1908
1909 # sles10 sp2 need 5 parameter for vfs_symlink
1910 AC_DEFUN([LC_VFS_SYMLINK_5ARGS],
1911 [AC_MSG_CHECKING([vfs_symlink need 5 parameter])
1912 LB_LINUX_TRY_COMPILE([
1913         #include <linux/fs.h>
1914 ],[
1915         struct inode *dir = NULL;
1916         struct dentry *dentry = NULL;
1917         struct vfsmount *mnt = NULL;
1918         const char * path = NULL;
1919         vfs_symlink(dir, dentry, mnt, path, 0);
1920 ],[
1921         AC_DEFINE(HAVE_VFS_SYMLINK_5ARGS, 1,
1922                 [vfs_symlink need 5 parameteres])
1923         AC_MSG_RESULT([yes])
1924 ],[
1925         AC_MSG_RESULT([no])
1926 ])
1927 ])
1928
1929 # 2.6.27 sles11 has sb_any_quota_active
1930 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1931 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1932 LB_LINUX_TRY_COMPILE([
1933         #include <linux/quotaops.h>
1934 ],[
1935         sb_any_quota_active(NULL);
1936 ],[
1937         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1938                 [Kernel has a sb_any_quota_active])
1939         AC_MSG_RESULT([yes])
1940 ],[
1941         AC_MSG_RESULT([no])
1942 ])
1943 ])
1944
1945 # 2.6.27 sles11 has sb_has_quota_active
1946 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1947 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1948 LB_LINUX_TRY_COMPILE([
1949         #include <linux/quotaops.h>
1950 ],[
1951         sb_has_quota_active(NULL, 0);
1952 ],[
1953         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1954                 [Kernel has a sb_has_quota_active])
1955         AC_MSG_RESULT([yes])
1956 ],[
1957         AC_MSG_RESULT([no])
1958 ])
1959 ])
1960
1961 # 2.6.31
1962
1963 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1964 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1965 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1966 LB_LINUX_TRY_COMPILE([
1967         #include <linux/blkdev.h>
1968 ],[
1969         blk_queue_logical_block_size(NULL, 0);
1970 ],[
1971         AC_MSG_RESULT(yes)
1972         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1973                   [blk_queue_logical_block_size is defined])
1974 ],[
1975         AC_MSG_RESULT(no)
1976 ])
1977 ])
1978
1979 # 2.6.32
1980
1981 # 2.6.32 add a limits member in struct request_queue.
1982 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1983 [AC_MSG_CHECKING([if request_queue has a limits field])
1984 LB_LINUX_TRY_COMPILE([
1985         #include <linux/blkdev.h>
1986 ],[
1987         struct request_queue rq;
1988         rq.limits.io_min = 0;
1989 ],[
1990         AC_MSG_RESULT(yes)
1991         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1992                   [request_queue has a limits field])
1993 ],[
1994         AC_MSG_RESULT(no)
1995 ])
1996 ])
1997
1998 # 2.6.32 has bdi_register() functions.
1999 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
2000 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
2001 [mm/backing-dev.c],[
2002         AC_DEFINE(HAVE_BDI_REGISTER, 1,
2003                 [bdi_register function is present])
2004 ],[
2005 ])
2006 ])
2007
2008 # 2.6.32 add s_bdi for super block
2009 AC_DEFUN([LC_SB_BDI],
2010 [AC_MSG_CHECKING([if super_block has s_bdi field])
2011 LB_LINUX_TRY_COMPILE([
2012         #include <linux/fs.h>
2013 ],[
2014         struct super_block sb;
2015         sb.s_bdi = NULL;
2016 ],[
2017         AC_MSG_RESULT(yes)
2018         AC_DEFINE(HAVE_SB_BDI, 1,
2019                   [super_block has s_bdi field])
2020 ],[
2021         AC_MSG_RESULT(no)
2022 ])
2023 ])
2024
2025 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
2026 # check blk_queue_max_sectors and use it until disappear.
2027 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
2028 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
2029 LB_LINUX_TRY_COMPILE([
2030         #include <linux/blkdev.h>
2031 ],[
2032         blk_queue_max_sectors(NULL, 0);
2033 ],[
2034         AC_MSG_RESULT(yes)
2035         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
2036                   [blk_queue_max_sectors is defined])
2037 ],[
2038         AC_MSG_RESULT(no)
2039 ])
2040 ])
2041
2042 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
2043 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
2044 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
2045 LB_LINUX_TRY_COMPILE([
2046         #include <linux/blkdev.h>
2047 ],[
2048         blk_queue_max_segments(NULL, 0);
2049 ],[
2050         AC_MSG_RESULT(yes)
2051         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
2052                   [blk_queue_max_segments is defined])
2053 ],[
2054         AC_MSG_RESULT(no)
2055 ])
2056 ])
2057
2058 #
2059 # LC_EXT4_SINGLEDATA_TRANS_BLOCKS_SB
2060 #
2061 AC_DEFUN([LC_EXT4_SINGLEDATA_TRANS_BLOCKS_SB],
2062 [AC_MSG_CHECKING([if EXT4_SINGLEDATA_TRANS_BLOCKS takes the sb as argument])
2063 tmp_flags="$EXTRA_KCFLAGS"
2064 EXTRA_KCFLAGS="-I$LINUX/fs"
2065 LB_LINUX_TRY_COMPILE([
2066         #include <ext4/ext4.h>
2067         #include <ext4/ext4_jbd2.h>
2068 ],[
2069         struct super_block sb;
2070         EXT4_SINGLEDATA_TRANS_BLOCKS(&sb);
2071 ],[
2072         AC_MSG_RESULT(yes)
2073         AC_DEFINE(LDISKFS_SINGLEDATA_TRANS_BLOCKS_HAS_SB, 1,
2074                   [EXT4_SINGLEDATA_TRANS_BLOCKS takes sb as argument])
2075 ],[
2076         AC_MSG_RESULT(no)
2077 ])
2078 EXTRA_KCFLAGS="$tmp_flags"
2079 ])
2080
2081 #
2082 # LC_WALK_SPACE_HAS_DATA_SEM
2083 #
2084 # 2.6.32 ext4_ext_walk_space() takes i_data_sem internally.
2085 #
2086 AC_DEFUN([LC_WALK_SPACE_HAS_DATA_SEM],
2087 [AC_MSG_CHECKING([if ext4_ext_walk_space() takes i_data_sem])
2088 WALK_SPACE_DATA_SEM="$(awk 'BEGIN { in_walk_space = 0 }                                 \
2089                             /^int ext4_ext_walk_space\(/ { in_walk_space = 1 }          \
2090                             /^}/ { if (in_walk_space) in_walk_space = 0 }               \
2091                             /i_data_sem/ { if (in_walk_space) { print("yes"); exit } }' \
2092                        $LINUX/fs/ext4/extents.c)"
2093 if test x"$WALK_SPACE_DATA_SEM" == xyes ; then
2094        AC_DEFINE(WALK_SPACE_HAS_DATA_SEM, 1,
2095                  [ext4_ext_walk_space takes i_data_sem])
2096        AC_MSG_RESULT([yes])
2097 else
2098        AC_MSG_RESULT([no])
2099 fi
2100 ])
2101
2102 #
2103 # LC_QUOTA64
2104 #
2105 # Check if kernel has been patched for 64-bit quota limits support.
2106 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
2107 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
2108 # that in the absence of quotaio_v1.h in the kernel headers.
2109 #
2110 AC_DEFUN([LC_QUOTA64],[
2111         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
2112 tmp_flags="$EXTRA_KCFLAGS"
2113 EXTRA_KCFLAGS="-I$LINUX/fs"
2114         LB_LINUX_TRY_COMPILE([
2115                 #include <linux/kernel.h>
2116                 #include <linux/fs.h>
2117                 #ifdef HAVE_QUOTAIO_H
2118                 # include <linux/quotaio_v2.h>
2119                 int versions[] = V2_INITQVERSIONS_R1;
2120                 struct v2_disk_dqblk_r1 dqblk_r1;
2121                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
2122                 # include <quota/quotaio_v2.h>
2123                 struct v2r1_disk_dqblk dqblk_r1;
2124                 #elif defined(HAVE_FS_QUOTAIO_H)
2125                 # include <quotaio_v2.h>
2126                 struct v2r1_disk_dqblk dqblk_r1;
2127                 #else
2128                 #include <linux/quota.h>
2129                 int ver = QFMT_VFS_V1;
2130                 #endif
2131         ],[],[
2132                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
2133                 AC_MSG_RESULT([yes])
2134         ],[
2135                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
2136                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
2137                 ],[])
2138                 AC_MSG_RESULT([no])
2139         ])
2140 EXTRA_KCFLAGS=$tmp_flags
2141 ])
2142
2143 #
2144 # LC_D_OBTAIN_ALIAS
2145 # starting from 2.6.28 kernel replaces d_alloc_anon() with
2146 # d_obtain_alias() for getting anonymous dentries
2147 #
2148 AC_DEFUN([LC_D_OBTAIN_ALIAS],
2149 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
2150 LB_LINUX_TRY_COMPILE([
2151         #include <linux/dcache.h>
2152 ],[
2153         d_obtain_alias(NULL);
2154 ],[
2155         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
2156                 [d_obtain_alias exist in kernel])
2157         AC_MSG_RESULT([yes])
2158 ],[
2159         AC_MSG_RESULT([no])
2160 ])
2161 ])
2162
2163
2164 #
2165 # LC_PROG_LINUX
2166 #
2167 # Lustre linux kernel checks
2168 #
2169 AC_DEFUN([LC_PROG_LINUX],
2170          [LC_LUSTRE_VERSION_H
2171          LC_CONFIG_PINGER
2172          LC_CONFIG_CHECKSUM
2173          LC_CONFIG_LIBLUSTRE_RECOVERY
2174          LC_CONFIG_HEALTH_CHECK_WRITE
2175          LC_CONFIG_LRU_RESIZE
2176          LC_QUOTA_MODULE
2177          LC_LLITE_LLOOP_MODULE
2178
2179          # RHEL4 patches
2180          LC_EXPORT_TRUNCATE_COMPLETE
2181          LC_EXPORT_TRUNCATE_RANGE
2182          LC_EXPORT_D_REHASH_COND
2183          LC_EXPORT___D_REHASH
2184          LC_EXPORT_NODE_TO_CPUMASK
2185
2186          LC_HEADER_LDISKFS_XATTR
2187          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
2188          LC_STRUCT_STATFS
2189          LC_FILEMAP_POPULATE
2190          LC_D_ADD_UNIQUE
2191          LC_BIT_SPINLOCK_H
2192
2193          LC_XATTR_ACL
2194          LC_POSIX_ACL_XATTR_H
2195          LC_CONST_ACL_SIZE
2196
2197          LC_STRUCT_INTENT_FILE
2198
2199          LC_CAPA_CRYPTO
2200          LC_CONFIG_RMTCLIENT
2201          LC_CONFIG_GSS
2202          LC_FUNC_HAVE_CAN_SLEEP_ARG
2203          LC_FUNC_F_OP_FLOCK
2204          LC_QUOTA_READ
2205          LC_COOKIE_FOLLOW_LINK
2206          LC_FUNC_RCU
2207          LC_PERCPU_COUNTER
2208          LC_TASK_CLENV_STORE
2209
2210          # ~2.6.11
2211          LC_S_TIME_GRAN
2212          LC_SB_TIME_GRAN
2213
2214          # 2.6.12
2215          LC_RW_TREE_LOCK
2216          LC_EXPORT_SYNCHRONIZE_RCU
2217
2218          # 2.6.15
2219          LC_INODE_I_MUTEX
2220
2221          # 2.6.16
2222          LC_SECURITY_PLUG  # for SLES10 SP2
2223
2224          # 2.6.17
2225          LC_INODE_IPRIVATE
2226          LC_DQUOTOFF_MUTEX
2227
2228          # 2.6.18
2229          LC_NR_PAGECACHE
2230          LC_STATFS_DENTRY_PARAM
2231          LC_VFS_KERN_MOUNT
2232          LC_INVALIDATEPAGE_RETURN_INT
2233          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2234          LC_SEQ_LOCK
2235          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
2236          LC_FLUSH_OWNER_ID
2237          if test x$enable_server = xyes ; then
2238                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2239          fi
2240          LC_EXT4_DISCARD_PREALLOCATIONS
2241          LC_EXT_INSERT_EXTENT_WITH_5ARGS
2242
2243          #2.6.18 + RHEL5 (fc6)
2244          LC_PG_FS_MISC
2245          LC_PAGE_CHECKED
2246          LC_LINUX_FIEMAP_H
2247
2248          # 2.6.19
2249          LC_INODE_BLKSIZE
2250          LC_VFS_READDIR_U64_INO
2251          LC_FILE_WRITEV
2252          LC_FILE_READV
2253
2254          # 2.6.20
2255          LC_CANCEL_DIRTY_PAGE
2256
2257          # raid5-zerocopy patch
2258          LC_PAGE_CONSTANT
2259
2260          # 2.6.22
2261          LC_INVALIDATE_BDEV_2ARG
2262          LC_ASYNC_BLOCK_CIPHER
2263          LC_STRUCT_HASH_DESC
2264          LC_STRUCT_BLKCIPHER_DESC
2265          LC_FS_RENAME_DOES_D_MOVE
2266
2267          # 2.6.23
2268          LC_UNREGISTER_BLKDEV_RETURN_INT
2269          LC_KERNEL_SPLICE_READ
2270          LC_KERNEL_SENDFILE
2271          LC_HAVE_EXPORTFS_H
2272          LC_VM_OP_FAULT
2273          LC_PROCFS_USERS
2274          LC_EXPORTFS_DECODE_FH
2275
2276          # 2.6.24
2277          LC_HAVE_MMTYPES_H
2278          LC_BIO_ENDIO_2ARG
2279          LC_FH_TO_DENTRY
2280          LC_PROCFS_DELETED
2281          LC_EXPORT_BDI_INIT
2282
2283          #2.6.25
2284          LC_MAPPING_CAP_WRITEBACK_DIRTY
2285
2286          # 2.6.26
2287          LC_FS_STRUCT_USE_PATH
2288
2289          # 2.6.27
2290          LC_INODE_PERMISION_2ARGS
2291          LC_FILE_REMOVE_SUID
2292          LC_TRYLOCKPAGE
2293          LC_READ_INODE_IN_SBOPS
2294          LC_EXPORT_INODE_PERMISSION
2295          LC_QUOTA_ON_5ARGS
2296          LC_QUOTA_OFF_3ARGS
2297          LC_VFS_DQ_OFF
2298          LC_LOCK_MAP_ACQUIRE
2299
2300          # 2.6.27.15-2 sles11
2301          LC_BI_HW_SEGMENTS
2302          LC_HAVE_QUOTAIO_H
2303          LC_VFS_SYMLINK_5ARGS
2304          LC_SB_ANY_QUOTA_ACTIVE
2305          LC_SB_HAS_QUOTA_ACTIVE
2306
2307          # 2.6.31
2308          LC_BLK_QUEUE_LOG_BLK_SIZE
2309
2310          # 2.6.32
2311          LC_REQUEST_QUEUE_LIMITS
2312          LC_EXPORT_BDI_REGISTER
2313          LC_SB_BDI
2314          LC_BLK_QUEUE_MAX_SECTORS
2315          LC_BLK_QUEUE_MAX_SEGMENTS
2316          LC_EXT4_SINGLEDATA_TRANS_BLOCKS_SB
2317          LC_WALK_SPACE_HAS_DATA_SEM
2318
2319          #
2320          if test x$enable_server = xyes ; then
2321              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2322              LC_FUNC_DEV_SET_RDONLY
2323              LC_STACK_SIZE
2324              LC_CONFIG_BACKINGFS
2325              LC_QUOTA64
2326          fi
2327 ])
2328
2329 #
2330 # LC_CONFIG_CLIENT_SERVER
2331 #
2332 # Build client/server sides of Lustre
2333 #
2334 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2335 [AC_MSG_CHECKING([whether to build Lustre server support])
2336 AC_ARG_ENABLE([server],
2337         AC_HELP_STRING([--disable-server],
2338                         [disable Lustre server support]),
2339         [],[enable_server='yes'])
2340 AC_MSG_RESULT([$enable_server])
2341
2342 AC_MSG_CHECKING([whether to build Lustre client support])
2343 AC_ARG_ENABLE([client],
2344         AC_HELP_STRING([--disable-client],
2345                         [disable Lustre client support]),
2346         [],[enable_client='yes'])
2347 AC_MSG_RESULT([$enable_client])])
2348
2349 #
2350 # LC_CONFIG_LIBLUSTRE
2351 #
2352 # whether to build liblustre
2353 #
2354 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2355 [AC_MSG_CHECKING([whether to build Lustre library])
2356 AC_ARG_ENABLE([liblustre],
2357         AC_HELP_STRING([--disable-liblustre],
2358                         [disable building of Lustre library]),
2359         [],[enable_liblustre=$with_sysio])
2360 AC_MSG_RESULT([$enable_liblustre])
2361 # only build sysio if liblustre is built
2362 with_sysio="$enable_liblustre"
2363
2364 AC_MSG_CHECKING([whether to build liblustre tests])
2365 AC_ARG_ENABLE([liblustre-tests],
2366         AC_HELP_STRING([--enable-liblustre-tests],
2367                         [enable liblustre tests, if --disable-tests is used]),
2368         [],[enable_liblustre_tests=$enable_tests])
2369 if test x$enable_liblustre != xyes ; then
2370    enable_liblustre_tests='no'
2371 fi
2372 AC_MSG_RESULT([$enable_liblustre_tests])
2373
2374 AC_MSG_CHECKING([whether to enable liblustre acl])
2375 AC_ARG_ENABLE([liblustre-acl],
2376         AC_HELP_STRING([--disable-liblustre-acl],
2377                         [disable ACL support for liblustre]),
2378         [],[enable_liblustre_acl=yes])
2379 AC_MSG_RESULT([$enable_liblustre_acl])
2380 if test x$enable_liblustre_acl = xyes ; then
2381   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2382 fi
2383
2384 # 2.6.29 change prepare/commit_write to write_begin/end
2385 AC_DEFUN([LC_WRITE_BEGIN_END],
2386 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2387 LB_LINUX_TRY_COMPILE([
2388         #include <linux/fs.h>
2389         #include <linux/pagemap.h>
2390 #ifdef HAVE_LINUX_MMTYPES_H
2391         #include <linux/mm_types.h>
2392 #endif
2393 ],[
2394         struct address_space_operations aops;
2395         struct page *page;
2396
2397         aops.write_begin = NULL;
2398         aops.write_end = NULL;
2399         page = grab_cache_page_write_begin(NULL, 0, 0);
2400 ], [
2401         AC_MSG_RESULT([yes])
2402         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2403                 [kernel has .write_begin/end])
2404 ],[
2405         AC_MSG_RESULT([no])
2406 ])
2407 ])
2408
2409 # 2.6.29 blkdev_put has 2 arguments
2410 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2411 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2412 LB_LINUX_TRY_COMPILE([
2413         #include <linux/fs.h>
2414 ],[
2415         blkdev_put(NULL, 0);
2416 ],[
2417         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2418                 [blkdev_put needs 2 paramters])
2419         AC_MSG_RESULT([yes])
2420 ],[
2421         AC_MSG_RESULT([no])
2422 ])
2423 ])
2424
2425 # 2.6.29 dentry_open has 4 arguments
2426 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2427 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2428 LB_LINUX_TRY_COMPILE([
2429         #include <linux/fs.h>
2430 ],[
2431         dentry_open(NULL, NULL, 0, NULL);
2432 ],[
2433         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2434                 [dentry_open needs 4 paramters])
2435         AC_MSG_RESULT([yes])
2436 ],[
2437         AC_MSG_RESULT([no])
2438 ])
2439 ])
2440
2441 #
2442 # --enable-mpitest
2443 #
2444 AC_ARG_ENABLE(mpitests,
2445         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2446                            [include mpi tests]),
2447         [
2448          enable_mpitests=yes
2449          case $enableval in
2450          yes)
2451                 MPICC_WRAPPER=mpicc
2452                 ;;
2453          no)
2454                 enable_mpitests=no
2455                 ;;
2456          *)
2457                 MPICC_WRAPPER=$enableval
2458                  ;;
2459          esac
2460         ],
2461         [
2462         MPICC_WRAPPER=mpicc
2463         enable_mpitests=yes
2464         ]
2465 )
2466
2467 if test x$enable_mpitests != xno; then
2468         AC_MSG_CHECKING([whether mpitests can be built])
2469         oldcc=$CC
2470         CC=$MPICC_WRAPPER
2471         AC_LINK_IFELSE(
2472             [AC_LANG_PROGRAM([[
2473                     #include <mpi.h>
2474                 ]],[[
2475                     int flag;
2476                     MPI_Initialized(&flag);
2477                 ]])],
2478             [
2479                     AC_MSG_RESULT([yes])
2480             ],[
2481                     AC_MSG_RESULT([no])
2482                     enable_mpitests=no
2483         ])
2484         CC=$oldcc
2485 fi
2486 AC_SUBST(MPICC_WRAPPER)
2487
2488 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2489 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2490
2491 LC_CONFIG_PINGER
2492 LC_CONFIG_LIBLUSTRE_RECOVERY
2493 ])
2494
2495 #
2496 # LC_CONFIG_QUOTA
2497 #
2498 # whether to enable quota support global control
2499 #
2500 AC_DEFUN([LC_CONFIG_QUOTA],
2501 [AC_ARG_ENABLE([quota],
2502         AC_HELP_STRING([--enable-quota],
2503                         [enable quota support]),
2504         [],[enable_quota='yes'])
2505 ])
2506
2507 AC_DEFUN([LC_QUOTA],
2508 [#check global
2509 LC_CONFIG_QUOTA
2510 #check for utils
2511 AC_CHECK_HEADER(sys/quota.h,
2512                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2513                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2514 ])
2515
2516 #
2517 # LC_CONFIG_SPLIT
2518 #
2519 # whether to enable split support
2520 #
2521 AC_DEFUN([LC_CONFIG_SPLIT],
2522 [AC_MSG_CHECKING([whether to enable split support])
2523 AC_ARG_ENABLE([split],
2524         AC_HELP_STRING([--enable-split],
2525                         [enable split support]),
2526         [],[enable_split='no'])
2527 AC_MSG_RESULT([$enable_split])
2528 if test x$enable_split != xno; then
2529    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2530 fi
2531 ])
2532
2533 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2534 [AC_MSG_CHECKING([tux_info])
2535 LB_LINUX_TRY_COMPILE([
2536         #include <linux/sched.h>
2537 ],[
2538         struct task_struct task;
2539         &task.tux_info;
2540 ],[
2541         AC_MSG_RESULT([yes])
2542         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2543         have_task_clenv_store='yes'
2544 ],[
2545         AC_MSG_RESULT([no])
2546 ])
2547 ])
2548
2549 #
2550 # LC_LLITE_LLOOP_MODULE
2551 # lloop_llite.ko does not currently work with page sizes
2552 # of 64k or larger.
2553 #
2554 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2555 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2556 LB_LINUX_TRY_COMPILE([
2557         #include <asm/page.h>
2558 ],[
2559         #if PAGE_SIZE >= 65536
2560         #error "PAGE_SIZE >= 65536"
2561         #endif
2562 ],[
2563         enable_llite_lloop_module='yes'
2564         AC_MSG_RESULT([yes])
2565 ],[
2566         enable_llite_lloop_module='no'
2567         AC_MSG_RESULT([no])
2568 ])
2569 ])
2570
2571 #
2572 # LC_CONFIGURE
2573 #
2574 # other configure checks
2575 #
2576 AC_DEFUN([LC_CONFIGURE],
2577 [LC_CONFIG_OBD_BUFFER_SIZE
2578
2579 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2580         CFLAGS="$CFLAGS -Werror"
2581 fi
2582
2583 # include/liblustre.h
2584 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2585
2586 # liblustre/llite_lib.h
2587 AC_CHECK_HEADERS([xtio.h file.h])
2588
2589 # liblustre/dir.c
2590 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2591
2592 # liblustre/lutil.c
2593 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2594 AC_CHECK_FUNCS([inet_ntoa])
2595
2596 # libsysio/src/readlink.c
2597 LC_READLINK_SSIZE_T
2598
2599 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2600 AC_CHECK_HEADERS([linux/random.h], [], [],
2601                  [#ifdef HAVE_LINUX_TYPES_H
2602                   # include <linux/types.h>
2603                   #endif
2604                  ])
2605
2606 # utils/llverfs.c
2607 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2608
2609 # check for -lz support
2610 ZLIB=""
2611 AC_CHECK_LIB([z],
2612              [adler32],
2613              [AC_CHECK_HEADERS([zlib.h],
2614                                [ZLIB="-lz"
2615                                 AC_DEFINE([HAVE_ADLER], 1,
2616                                           [support alder32 checksum type])],
2617                                [AC_MSG_WARN([No zlib-devel package found,
2618                                              unable to use adler32 checksum])])],
2619              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2620 )
2621 AC_SUBST(ZLIB)
2622
2623 # Super safe df
2624 AC_ARG_ENABLE([mindf],
2625       AC_HELP_STRING([--enable-mindf],
2626                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2627       [],[])
2628 if test "$enable_mindf" = "yes" ;  then
2629       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2630 fi
2631
2632 AC_ARG_ENABLE([fail_alloc],
2633         AC_HELP_STRING([--disable-fail-alloc],
2634                 [disable randomly alloc failure]),
2635         [],[enable_fail_alloc=yes])
2636 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2637 AC_MSG_RESULT([$enable_fail_alloc])
2638 if test x$enable_fail_alloc != xno ; then
2639         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2640 fi
2641
2642 AC_ARG_ENABLE([invariants],
2643         AC_HELP_STRING([--enable-invariants],
2644                 [enable invariant checking (cpu intensive)]),
2645         [],[])
2646 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2647 AC_MSG_RESULT([$enable_invariants])
2648 if test x$enable_invariants = xyes ; then
2649         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2650 fi
2651
2652 AC_ARG_ENABLE([lu_ref],
2653         AC_HELP_STRING([--enable-lu_ref],
2654                 [enable lu_ref reference tracking code]),
2655         [],[])
2656 AC_MSG_CHECKING([whether to track references with lu_ref])
2657 AC_MSG_RESULT([$enable_lu_ref])
2658 if test x$enable_lu_ref = xyes ; then
2659         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2660 fi
2661
2662 AC_ARG_ENABLE([pgstate-track],
2663               AC_HELP_STRING([--enable-pgstate-track],
2664                              [enable page state tracking]),
2665               [enable_pgstat_track='yes'],[])
2666 AC_MSG_CHECKING([whether to enable page state tracking])
2667 AC_MSG_RESULT([$enable_pgstat_track])
2668 if test x$enable_pgstat_track = xyes ; then
2669         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2670                   [enable page state tracking code])
2671 fi
2672
2673          #2.6.29
2674          LC_WRITE_BEGIN_END
2675          LC_D_OBTAIN_ALIAS
2676          LC_BLKDEV_PUT_2ARGS
2677          LC_DENTRY_OPEN_4ARGS
2678
2679 ])
2680
2681 #
2682 # LC_CONDITIONALS
2683 #
2684 # AM_CONDITIONALS for lustre
2685 #
2686 AC_DEFUN([LC_CONDITIONALS],
2687 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2688 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2689 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2690 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2691 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2692 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2693 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2694 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2695 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2696 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2697 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2698 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2699 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2700 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2701 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2702 ])
2703
2704 #
2705 # LC_CONFIG_FILES
2706 #
2707 # files that should be generated with AC_OUTPUT
2708 #
2709 AC_DEFUN([LC_CONFIG_FILES],
2710 [AC_CONFIG_FILES([
2711 lustre/Makefile
2712 lustre/autoMakefile
2713 lustre/autoconf/Makefile
2714 lustre/conf/Makefile
2715 lustre/contrib/Makefile
2716 lustre/doc/Makefile
2717 lustre/include/Makefile
2718 lustre/include/lustre_ver.h
2719 lustre/include/linux/Makefile
2720 lustre/include/lustre/Makefile
2721 lustre/kernel_patches/targets/2.6-rhel6.target
2722 lustre/kernel_patches/targets/2.6-rhel5.target
2723 lustre/kernel_patches/targets/2.6-sles10.target
2724 lustre/kernel_patches/targets/2.6-sles11.target
2725 lustre/kernel_patches/targets/2.6-oel5.target
2726 lustre/kernel_patches/targets/2.6-fc11.target
2727 lustre/kernel_patches/targets/2.6-fc12.target
2728 lustre/ldlm/Makefile
2729 lustre/fid/Makefile
2730 lustre/fid/autoMakefile
2731 lustre/liblustre/Makefile
2732 lustre/liblustre/tests/Makefile
2733 lustre/liblustre/tests/mpi/Makefile
2734 lustre/llite/Makefile
2735 lustre/llite/autoMakefile
2736 lustre/lclient/Makefile
2737 lustre/lov/Makefile
2738 lustre/lov/autoMakefile
2739 lustre/lvfs/Makefile
2740 lustre/lvfs/autoMakefile
2741 lustre/mdc/Makefile
2742 lustre/mdc/autoMakefile
2743 lustre/lmv/Makefile
2744 lustre/lmv/autoMakefile
2745 lustre/mds/Makefile
2746 lustre/mds/autoMakefile
2747 lustre/mdt/Makefile
2748 lustre/mdt/autoMakefile
2749 lustre/cmm/Makefile
2750 lustre/cmm/autoMakefile
2751 lustre/mdd/Makefile
2752 lustre/mdd/autoMakefile
2753 lustre/fld/Makefile
2754 lustre/fld/autoMakefile
2755 lustre/obdclass/Makefile
2756 lustre/obdclass/autoMakefile
2757 lustre/obdclass/linux/Makefile
2758 lustre/obdecho/Makefile
2759 lustre/obdecho/autoMakefile
2760 lustre/obdfilter/Makefile
2761 lustre/obdfilter/autoMakefile
2762 lustre/osc/Makefile
2763 lustre/osc/autoMakefile
2764 lustre/ost/Makefile
2765 lustre/ost/autoMakefile
2766 lustre/osd-ldiskfs/Makefile
2767 lustre/osd-ldiskfs/autoMakefile
2768 lustre/mgc/Makefile
2769 lustre/mgc/autoMakefile
2770 lustre/mgs/Makefile
2771 lustre/mgs/autoMakefile
2772 lustre/ptlrpc/Makefile
2773 lustre/ptlrpc/autoMakefile
2774 lustre/ptlrpc/gss/Makefile
2775 lustre/ptlrpc/gss/autoMakefile
2776 lustre/quota/Makefile
2777 lustre/quota/autoMakefile
2778 lustre/scripts/Makefile
2779 lustre/tests/Makefile
2780 lustre/tests/mpi/Makefile
2781 lustre/utils/Makefile
2782 lustre/utils/gss/Makefile
2783 lustre/obdclass/darwin/Makefile
2784 ])
2785 ])