lustre/autoconf/lustre-core.m4

   1 #* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2 #* vim:expandtab:shiftwidth=8:tabstop=8:
   3 #
   4 # LC_CONFIG_SRCDIR
   5 #
   6 # Wrapper for AC_CONFIG_SUBDIR
   7 #
   8 AC_DEFUN([LC_CONFIG_SRCDIR],
   9 [AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
  10 libcfs_is_module=yes
  11 ldiskfs_is_ext4=yes
  12 ])
  13
  14 #
  15 # LC_PATH_DEFAULTS
  16 #
  17 # lustre specific paths
  18 #
  19 AC_DEFUN([LC_PATH_DEFAULTS],
  20 [# ptlrpc kernel build requires this
  21 LUSTRE="$PWD/lustre"
  22 AC_SUBST(LUSTRE)
  23
  24 # mount.lustre
  25 rootsbindir='/sbin'
  26 AC_SUBST(rootsbindir)
  27
  28 demodir='$(docdir)/demo'
  29 AC_SUBST(demodir)
  30
  31 pkgexampledir='${pkgdatadir}/examples'
  32 AC_SUBST(pkgexampledir)
  33 ])
  34
  35 #
  36 # LC_TARGET_SUPPORTED
  37 #
  38 # is the target os supported?
  39 #
  40 AC_DEFUN([LC_TARGET_SUPPORTED],
  41 [case $target_os in
  42         linux* | darwin*)
  43 $1
  44                 ;;
  45         *)
  46 $2
  47                 ;;
  48 esac
  49 ])
  50
  51 #
  52 # LC_CONFIG_OBD_BUFFER_SIZE
  53 #
  54 # the maximum buffer size of lctl ioctls
  55 #
  56 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
  57 [AC_MSG_CHECKING([maximum OBD ioctl size])
  58 AC_ARG_WITH([obd-buffer-size],
  59         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  60                         [set lctl ioctl maximum bytes (default=8192)]),
  61         [
  62                 OBD_BUFFER_SIZE=$with_obd_buffer_size
  63         ],[
  64                 OBD_BUFFER_SIZE=8192
  65         ])
  66 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  67 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
  68 ])
  69
  70 #
  71 # LC_READLINK_SSIZE_T
  72 #
  73 AC_DEFUN([LC_READLINK_SSIZE_T],
  74 [AC_MSG_CHECKING([if readlink returns ssize_t])
  75 AC_TRY_COMPILE([
  76         #include <unistd.h>
  77 ],[
  78         ssize_t readlink(const char *, char *, size_t);
  79 ],[
  80         AC_MSG_RESULT([yes])
  81         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
  82 ],[
  83         AC_MSG_RESULT([no])
  84 ])
  85 ])
  86
  87 #
  88 # only for Lustre-patched kernels
  89 #
  90 AC_DEFUN([LC_LUSTRE_VERSION_H],
  91 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
  92         rm -f "$LUSTRE/include/linux/lustre_version.h"
  93 ],[
  94         touch "$LUSTRE/include/linux/lustre_version.h"
  95         if test x$enable_server = xyes ; then
  96                 AC_MSG_WARN([Unpatched kernel detected.])
  97                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
  98                 AC_MSG_WARN([disabling server build])
  99                 enable_server='no'
 100         fi
 101 ])
 102 ])
 103
 104 #
 105 # LC_FUNC_DEV_SET_RDONLY
 106 #
 107 # check whether dev_set_rdonly is exported.  This is needed until we
 108 # have another mechanism to fence IO from the underlying device.
 109 #
 110 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
 111 [LB_CHECK_SYMBOL_EXPORT([dev_set_rdonly],
 112 [block/ll_rw_block.c,block/blk-core.c],[
 113         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel exports dev_set_rdonly])
 114 ],[
 115         AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])
 116 ])
 117 ])
 118
 119 #
 120 # Ensure stack size big than 8k in Lustre server (all kernels)
 121 #
 122 AC_DEFUN([LC_STACK_SIZE],
 123 [AC_MSG_CHECKING([stack size big than 8k])
 124 LB_LINUX_TRY_COMPILE([
 125         #include <linux/thread_info.h>
 126 ],[
 127         #if THREAD_SIZE < 8192
 128         #error "stack size < 8192"
 129         #endif
 130 ],[
 131         AC_MSG_RESULT(yes)
 132 ],[
 133         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
 134 ])
 135 ])
 136
 137 #
 138 # Allow the user to set the MDS thread upper limit
 139 #
 140 AC_DEFUN([LC_MDS_MAX_THREADS],
 141 [
 142         AC_ARG_WITH([mds_max_threads],
 143         AC_HELP_STRING([--with-mds-max-threads=size],
 144                         [define the maximum number of threads available on the MDS: (default=512)]),
 145         [
 146                 MDS_THREAD_COUNT=$with_mds_max_threads
 147                 AC_DEFINE_UNQUOTED(MDT_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of mdt threads])
 148         ])
 149 ])
 150
 151 #
 152 # LC_CONFIG_PINGER
 153 #
 154 # the pinger is temporary, until we have the recovery node in place
 155 #
 156 AC_DEFUN([LC_CONFIG_PINGER],
 157 [AC_MSG_CHECKING([whether to enable pinger support])
 158 AC_ARG_ENABLE([pinger],
 159         AC_HELP_STRING([--disable-pinger],
 160                         [disable recovery pinger support]),
 161         [],[enable_pinger='yes'])
 162 AC_MSG_RESULT([$enable_pinger])
 163 if test x$enable_pinger != xno ; then
 164   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 165 fi
 166 ])
 167
 168 #
 169 # LC_CONFIG_CHECKSUM
 170 #
 171 # do checksum of bulk data between client and OST
 172 #
 173 AC_DEFUN([LC_CONFIG_CHECKSUM],
 174 [AC_MSG_CHECKING([whether to enable data checksum support])
 175 AC_ARG_ENABLE([checksum],
 176        AC_HELP_STRING([--disable-checksum],
 177                        [disable data checksum support]),
 178        [],[enable_checksum='yes'])
 179 AC_MSG_RESULT([$enable_checksum])
 180 if test x$enable_checksum != xno ; then
 181   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 182 fi
 183 ])
 184
 185 #
 186 # LC_CONFIG_LIBLUSTRE_RECOVERY
 187 #
 188 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 189 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 190 AC_ARG_ENABLE([liblustre-recovery],
 191         AC_HELP_STRING([--disable-liblustre-recovery],
 192                         [disable liblustre recovery support]),
 193         [],[enable_liblustre_recovery='yes'])
 194 AC_MSG_RESULT([$enable_liblustre_recovery])
 195 if test x$enable_liblustre_recovery != xno ; then
 196   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 197 fi
 198 ])
 199
 200 #
 201 # LC_CONFIG_HEALTH_CHECK_WRITE
 202 #
 203 # Turn off the actual write to the disk
 204 #
 205 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 206 [AC_MSG_CHECKING([whether to enable a write with the health check])
 207 AC_ARG_ENABLE([health_write],
 208         AC_HELP_STRING([--enable-health_write],
 209                         [enable disk writes when doing health check]),
 210         [],[enable_health_write='no'])
 211 AC_MSG_RESULT([$enable_health_write])
 212 if test x$enable_health_write != xno ; then
 213   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 214 fi
 215 ])
 216
 217 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
 218 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
 219 AC_ARG_ENABLE([lru_resize],
 220         AC_HELP_STRING([--enable-lru-resize],
 221                         [enable lru resize support]),
 222         [],[enable_lru_resize='yes'])
 223 AC_MSG_RESULT([$enable_lru_resize])
 224 if test x$enable_lru_resize != xno; then
 225    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 226 fi
 227 ])
 228
 229 # whether to enable quota support(kernel modules)
 230 AC_DEFUN([LC_QUOTA_MODULE],
 231 [if test x$enable_quota != xno; then
 232     LB_LINUX_CONFIG([QUOTA],[
 233         enable_quota_module='yes'
 234         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
 235     ],[
 236         enable_quota_module='no'
 237         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
 238     ])
 239 fi
 240 ])
 241
 242 # truncate_complete_page() was exported from RHEL5/SLES10, but not in SLES11 SP0 (2.6.27)
 243 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 244 # delete_from_page_cache() is exported from 2.6.39
 245 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
 246          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 247                                  [mm/truncate.c],
 248                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 249                                             [kernel export truncate_complete_page])])
 250           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
 251                                  [mm/filemap.c],
 252                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 253                                             [kernel export remove_from_page_cache])])
 254           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
 255                                  [mm/filemap.c],
 256                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 257                                             [kernel export delete_from_page_cache])])
 258          ])
 259
 260 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
 261 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
 262 [fs/dcache.c],[
 263 AC_DEFINE(HAVE_D_REHASH_COND, 1,
 264             [d_rehash_cond is exported by the kernel])
 265 ],[
 266 ])
 267 ])
 268
 269 AC_DEFUN([LC_EXPORT___D_REHASH],
 270 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
 271 [fs/dcache.c],[
 272 AC_DEFINE(HAVE___D_REHASH, 1,
 273             [__d_rehash is exported by the kernel])
 274 ],[
 275 ])
 276 ])
 277
 278 # The actual symbol exported varies among architectures, so we need
 279 # to check many symbols (but only in the current architecture.)  No
 280 # matter what symbol is exported, the kernel #defines node_to_cpumask
 281 # to the appropriate function and that's what we use.
 282 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
 283          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
 284                                  [arch/$LINUX_ARCH/mm/numa.c],
 285                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 286                                             [node_to_cpumask is exported by
 287                                              the kernel])]) # x86_64
 288           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
 289                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 290                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 291                                             [node_to_cpumask is exported by
 292                                              the kernel])]) # ia64
 293           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
 294                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
 295                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
 296                                             [node_to_cpumask is exported by
 297                                              the kernel])]) # i386
 298           ])
 299
 300 #
 301 #
 302 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
 303 #
 304 AC_DEFUN([LC_FILEMAP_POPULATE],
 305 [AC_MSG_CHECKING([for exported filemap_populate])
 306 LB_LINUX_TRY_COMPILE([
 307         #include <asm/page.h>
 308         #include <linux/mm.h>
 309 ],[
 310        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 311 ],[
 312         AC_MSG_RESULT([yes])
 313         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 314 ],[
 315         AC_MSG_RESULT([no])
 316 ])
 317 ])
 318
 319 #
 320 # added in 2.6.17
 321 #
 322 AC_DEFUN([LC_BIT_SPINLOCK_H],
 323 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 324         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 325         LB_LINUX_TRY_COMPILE([
 326                 #include <asm/processor.h>
 327                 #include <linux/spinlock.h>
 328                 #include <linux/bit_spinlock.h>
 329         ],[],[
 330                 AC_MSG_RESULT([yes])
 331                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 332         ],[
 333                 AC_MSG_RESULT([no])
 334         ])
 335 ],
 336 [])
 337 ])
 338
 339 #
 340 # LC_CONST_ACL_SIZE
 341 #
 342 AC_DEFUN([LC_CONST_ACL_SIZE],
 343 [AC_MSG_CHECKING([calc acl size])
 344 tmp_flags="$CFLAGS"
 345 CFLAGS="$CFLAGS -I$LINUX/include -I$LINUX_OBJ/include -I$LINUX_OBJ/include2 -I$LINUX/arch/`uname -m|sed -e 's/ppc.*/powerpc/' -e 's/x86_64/x86/' -e 's/i.86/x86/'`/include -include $AUTOCONF_HDIR/autoconf.h $EXTRA_KCFLAGS"
 346 AC_TRY_RUN([
 347         #define __KERNEL__
 348         #include <linux/types.h>
 349         #undef __KERNEL__
 350         // block include
 351         #define __LINUX_POSIX_ACL_H
 352
 353         #ifdef CONFIG_FS_POSIX_ACL
 354         # include <linux/posix_acl_xattr.h>
 355         #endif
 356
 357         #include <stdio.h>
 358
 359         int main(void)
 360         {
 361                 /* LUSTRE_POSIX_ACL_MAX_ENTRIES  = 32 */
 362             int size = posix_acl_xattr_size(32);
 363             FILE *f = fopen("acl.size","w+");
 364             fprintf(f,"%d", size);
 365             fclose(f);
 366
 367             return 0;
 368         }
 369 ],[
 370         acl_size=`cat acl.size`
 371         AC_MSG_RESULT([ACL size $acl_size])
 372         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
 373 ],[
 374         AC_ERROR([ACL size can't be computed])
 375 ],[
 376         AC_MSG_RESULT([can't check ACL size, make it 260])
 377         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE,260)
 378 ])
 379 CFLAGS="$tmp_flags"
 380 ])
 381
 382 # added in 2.6.16
 383 #
 384 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 385 [AC_MSG_CHECKING([if struct open_intent has a file field])
 386 LB_LINUX_TRY_COMPILE([
 387         #include <linux/fs.h>
 388         #include <linux/namei.h>
 389 ],[
 390         struct open_intent intent;
 391         &intent.file;
 392 ],[
 393         AC_MSG_RESULT([yes])
 394         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 395 ],[
 396         AC_MSG_RESULT([no])
 397 ])
 398 ])
 399
 400 #
 401 # LC_CAPA_CRYPTO
 402 #
 403 AC_DEFUN([LC_CAPA_CRYPTO],
 404 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 405         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 406 ])
 407 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 408         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 409 ])
 410 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 411         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 412 ])
 413 ])
 414
 415 #
 416 # LC_CONFIG_RMTCLIENT
 417 #
 418 dnl FIXME
 419 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 420 dnl FIXME
 421 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 422 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 423         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 424 ])
 425 ])
 426
 427 #
 428 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 429 #
 430 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 431 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 432  AC_ARG_ENABLE([gss_keyring],
 433                [AC_HELP_STRING([--disable-gss-keyring],
 434                                [disable gss keyring backend])],
 435                [],[enable_gss_keyring='yes'])
 436  AC_MSG_RESULT([$enable_gss_keyring])
 437
 438  if test x$enable_gss_keyring != xno; then
 439         LB_LINUX_CONFIG_IM([KEYS],[],
 440                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 441
 442         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 443                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 444
 445         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 446                   [Define this if you enable gss keyring backend])
 447  fi
 448 ])
 449
 450 AC_DEFUN([LC_SUNRPC_CACHE],
 451 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 452 LB_LINUX_TRY_COMPILE([
 453         #include <linux/sunrpc/cache.h>
 454 ],[
 455         struct cache_head ch;
 456         &ch.ref.refcount;
 457 ],[
 458         AC_MSG_RESULT([yes])
 459         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 460 ],[
 461         AC_MSG_RESULT([no])
 462 ])
 463 ])
 464
 465 AC_DEFUN([LC_CONFIG_SUNRPC],
 466 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 467                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 468  LC_SUNRPC_CACHE
 469 ])
 470
 471 #
 472 # LC_CONFIG_GSS (default disabled)
 473 #
 474 # Build gss and related tools of Lustre. Currently both kernel and user space
 475 # parts are depend on linux platform.
 476 #
 477 AC_DEFUN([LC_CONFIG_GSS],
 478 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 479  AC_ARG_ENABLE([gss],
 480                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 481                [],[enable_gss='no'])
 482  AC_MSG_RESULT([$enable_gss])
 483
 484  if test x$enable_gss == xyes; then
 485         LC_CONFIG_GSS_KEYRING
 486         LC_CONFIG_SUNRPC
 487
 488         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 489
 490         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 491                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 492         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 493                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 494         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 495                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 496         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 497                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 498
 499         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 500                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 501                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 502                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 503                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 504
 505         AC_SUBST(GSSAPI_LIBS)
 506
 507         AC_KERBEROS_V5
 508  fi
 509 ])
 510
 511 #
 512 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 513 #
 514 # 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
 515 #
 516 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 517 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 518 LB_LINUX_TRY_COMPILE([
 519         #include <linux/fs.h>
 520 ],[
 521         int cansleep;
 522         struct file *file;
 523         struct file_lock *file_lock;
 524         flock_lock_file_wait(file, file_lock, cansleep);
 525 ],[
 526         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 527                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 528         AC_MSG_RESULT([yes])
 529 ],[
 530         AC_MSG_RESULT([no])
 531 ])
 532 ])
 533
 534 #
 535 # LC_FUNC_F_OP_FLOCK
 536 #
 537 # rhel4.2 kernel has f_op->flock field
 538 #
 539 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 540 [AC_MSG_CHECKING([if struct file_operations has flock field])
 541 LB_LINUX_TRY_COMPILE([
 542         #include <linux/fs.h>
 543 ],[
 544         struct file_operations ll_file_operations_flock;
 545         ll_file_operations_flock.flock = NULL;
 546 ],[
 547         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 548                 [struct file_operations has flock field])
 549         AC_MSG_RESULT([yes])
 550 ],[
 551         AC_MSG_RESULT([no])
 552 ])
 553 ])
 554
 555 AC_DEFUN([LC_QUOTA_READ],
 556 [AC_MSG_CHECKING([if kernel supports quota_read])
 557 LB_LINUX_TRY_COMPILE([
 558         #include <linux/fs.h>
 559 ],[
 560         struct super_operations sp;
 561         void *i = (void *)sp.quota_read;
 562 ],[
 563         AC_MSG_RESULT([yes])
 564         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
 565 ],[
 566         AC_MSG_RESULT([no])
 567 ])
 568 ])
 569
 570 #
 571 # LC_COOKIE_FOLLOW_LINK
 572 #
 573 # kernel 2.6.13+ ->follow_link returns a cookie
 574 #
 575
 576 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
 577 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
 578 LB_LINUX_TRY_COMPILE([
 579         #include <linux/fs.h>
 580         #include <linux/namei.h>
 581 ],[
 582         struct dentry dentry;
 583         struct nameidata nd;
 584
 585         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
 586 ],[
 587         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
 588         AC_MSG_RESULT([yes])
 589 ],[
 590         AC_MSG_RESULT([no])
 591 ])
 592 ])
 593
 594 #
 595 # LC_FUNC_RCU
 596 #
 597 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
 598 # call_rcu takes three parameters.
 599 #
 600 AC_DEFUN([LC_FUNC_RCU],
 601 [AC_MSG_CHECKING([if kernel have RCU supported])
 602 LB_LINUX_TRY_COMPILE([
 603         #include <linux/rcupdate.h>
 604 ],[],[
 605         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
 606         AC_MSG_RESULT([yes])
 607
 608         AC_MSG_CHECKING([if call_rcu takes three parameters])
 609         LB_LINUX_TRY_COMPILE([
 610                 #include <linux/rcupdate.h>
 611         ],[
 612                 struct rcu_head rh;
 613                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
 614         ],[
 615                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
 616                 AC_MSG_RESULT([yes])
 617         ],[
 618                 AC_MSG_RESULT([no])
 619         ])
 620
 621 ],[
 622         AC_MSG_RESULT([no])
 623 ])
 624 ])
 625
 626 AC_DEFUN([LC_PERCPU_COUNTER],
 627 [AC_MSG_CHECKING([if have struct percpu_counter defined])
 628 LB_LINUX_TRY_COMPILE([
 629         #include <linux/percpu_counter.h>
 630 ],[],[
 631         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
 632         AC_MSG_RESULT([yes])
 633
 634         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
 635         LB_LINUX_TRY_COMPILE([
 636                 #include <linux/percpu_counter.h>
 637         ],[
 638                 struct percpu_counter c;
 639                 percpu_counter_init(&c, 0);
 640         ],[
 641                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
 642                                                    arguments])
 643                 AC_MSG_RESULT([yes])
 644         ],[
 645                 AC_MSG_RESULT([no])
 646         ])
 647 ],[
 648         AC_MSG_RESULT([no])
 649 ])
 650 ])
 651
 652 AC_DEFUN([LC_TASK_CLENV_STORE],
 653 [
 654         AC_MSG_CHECKING([if we can store cl_env in task_struct])
 655         if test x$have_task_clenv_store != xyes ; then
 656                 LC_TASK_CLENV_TUX_INFO
 657         fi
 658 ])
 659
 660 # ~2.6.11
 661
 662 AC_DEFUN([LC_S_TIME_GRAN],
 663 [AC_MSG_CHECKING([if super block has s_time_gran member])
 664 LB_LINUX_TRY_COMPILE([
 665         #include <linux/fs.h>
 666 ],[
 667         struct super_block sb;
 668
 669         return sb.s_time_gran;
 670 ],[
 671         AC_MSG_RESULT([yes])
 672         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
 673 ],[
 674         AC_MSG_RESULT([no])
 675 ])
 676 ])
 677
 678 AC_DEFUN([LC_SB_TIME_GRAN],
 679 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
 680 LB_LINUX_TRY_COMPILE([
 681         #include <linux/fs.h>
 682 ],[
 683         return get_sb_time_gran(NULL);
 684 ],[
 685         AC_MSG_RESULT([yes])
 686         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
 687 ],[
 688         AC_MSG_RESULT([no])
 689 ])
 690 ])
 691
 692 # 2.6.12
 693
 694 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
 695 AC_DEFUN([LC_RW_TREE_LOCK],
 696 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
 697 tmp_flags="$EXTRA_KCFLAGS"
 698 EXTRA_KCFLAGS="-Werror"
 699 LB_LINUX_TRY_COMPILE([
 700         #include <linux/fs.h>
 701 ],[
 702         struct address_space a;
 703
 704         write_lock(&a.tree_lock);
 705 ],[
 706         AC_MSG_RESULT([yes])
 707         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
 708 ],[
 709         AC_MSG_RESULT([no])
 710 ])
 711 EXTRA_KCFLAGS="$tmp_flags"
 712 ])
 713
 714 # 2.6.15
 715
 716 # LC_INODE_I_MUTEX
 717 # after 2.6.15 inode have i_mutex intead of i_sem
 718 AC_DEFUN([LC_INODE_I_MUTEX],
 719 [AC_MSG_CHECKING([if inode has i_mutex ])
 720 LB_LINUX_TRY_COMPILE([
 721         #include <linux/mutex.h>
 722         #include <linux/fs.h>
 723         #undef i_mutex
 724 ],[
 725         struct inode i;
 726
 727         mutex_unlock(&i.i_mutex);
 728 ],[
 729         AC_MSG_RESULT(yes)
 730         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 731                 [after 2.6.15 inode have i_mutex intead of i_sem])
 732 ],[
 733         AC_MSG_RESULT(no)
 734 ])
 735 ])
 736
 737 # 2.6.16
 738
 739 # LC_SECURITY_PLUG  # for SLES10 SP2
 740 # check security plug in sles10 sp2 kernel
 741 AC_DEFUN([LC_SECURITY_PLUG],
 742 [AC_MSG_CHECKING([If kernel has security plug support])
 743 LB_LINUX_TRY_COMPILE([
 744         #include <linux/fs.h>
 745 ],[
 746         struct dentry   *dentry;
 747         struct vfsmount *mnt;
 748         struct iattr    *iattr;
 749
 750         notify_change(dentry, mnt, iattr);
 751 ],[
 752         AC_MSG_RESULT(yes)
 753         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
 754                 [SLES10 SP2 use extra parameter in vfs])
 755 ],[
 756         AC_MSG_RESULT(no)
 757 ])
 758 ])
 759
 760 # 2.6.17
 761
 762 # inode have i_private field since 2.6.17
 763 AC_DEFUN([LC_INODE_IPRIVATE],
 764 [AC_MSG_CHECKING([if inode has a i_private field])
 765 LB_LINUX_TRY_COMPILE([
 766 #include <linux/fs.h>
 767 ],[
 768         struct inode i;
 769         i.i_private = NULL;
 770 ],[
 771         AC_MSG_RESULT(yes)
 772         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
 773                 [struct inode has i_private field])
 774 ],[
 775         AC_MSG_RESULT(no)
 776 ])
 777 ])
 778
 779 # LC_DQUOTOFF_MUTEX
 780 # after 2.6.17 dquote use mutex instead if semaphore
 781 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 782 [AC_MSG_CHECKING([use dqonoff_mutex])
 783 LB_LINUX_TRY_COMPILE([
 784         #include <linux/mutex.h>
 785         #include <linux/fs.h>
 786         #include <linux/quota.h>
 787 ],[
 788         struct quota_info dq;
 789
 790         mutex_unlock(&dq.dqonoff_mutex);
 791 ],[
 792         AC_MSG_RESULT(yes)
 793         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 794                 [after 2.6.17 dquote use mutex instead if semaphore])
 795 ],[
 796         AC_MSG_RESULT(no)
 797 ])
 798 ])
 799
 800 # 2.6.18
 801
 802 # LC_NR_PAGECACHE
 803 # 2.6.18 don't export nr_pagecahe
 804 AC_DEFUN([LC_NR_PAGECACHE],
 805 [AC_MSG_CHECKING([kernel export nr_pagecache])
 806 LB_LINUX_TRY_COMPILE([
 807         #include <linux/pagemap.h>
 808 ],[
 809         return atomic_read(&nr_pagecache);
 810 ],[
 811         AC_MSG_RESULT(yes)
 812         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
 813                 [is kernel export nr_pagecache])
 814 ],[
 815         AC_MSG_RESULT(no)
 816 ])
 817 ])
 818
 819 #
 820 # LC_STATFS_DENTRY_PARAM
 821 # starting from 2.6.18 linux kernel uses dentry instead of super_block
 822 # for the first parameter of the super_operations->statfs() callback.
 823 #
 824 #
 825 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 826 [AC_MSG_CHECKING([if super_ops.statfs() first parameter is dentry])
 827 tmp_flags="$EXTRA_KCFLAGS"
 828 EXTRA_KCFLAGS="-Werror"
 829 LB_LINUX_TRY_COMPILE([
 830         #include <linux/fs.h>
 831 ],[
 832         ((struct super_operations *)0)->statfs((struct dentry *)0, (struct kstatfs*)0);
 833 ],[
 834         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 835                   [super_ops.statfs() first parameter is dentry])
 836         AC_MSG_RESULT([yes])
 837 ],[
 838         AC_MSG_RESULT([no])
 839 ])
 840 EXTRA_KCFLAGS="$tmp_flags"
 841 ])
 842
 843 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 844 # 2.6.18~2.6.25 umount_begin has different parameters
 845 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 846 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 847 tmp_flags="$EXTRA_KCFLAGS"
 848 EXTRA_KCFLAGS="-Werror"
 849 LB_LINUX_TRY_COMPILE([
 850         #include <linux/fs.h>
 851
 852         struct vfsmount;
 853         static void cfg_umount_begin (struct vfsmount *v, int flags)
 854         {
 855                 ;
 856         }
 857
 858         static struct super_operations cfg_super_operations = {
 859                 .umount_begin   = cfg_umount_begin,
 860         };
 861 ],[
 862         cfg_super_operations.umount_begin(NULL,0);
 863 ],[
 864         AC_MSG_RESULT(yes)
 865         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
 866                 [Define umount_begin need second argument])
 867 ],[
 868         AC_MSG_RESULT(no)
 869 ])
 870 EXTRA_KCFLAGS="$tmp_flags"
 871 ])
 872
 873 # LC_FLUSH_OWNER_ID
 874 # starting from 2.6.18 the file_operations .flush
 875 # method has a new "fl_owner_t id" parameter
 876 #
 877 AC_DEFUN([LC_FLUSH_OWNER_ID],
 878 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
 879 LB_LINUX_TRY_COMPILE([
 880         #include <linux/fs.h>
 881 ],[
 882         struct file_operations *fops = NULL;
 883         fl_owner_t id;
 884         int i;
 885
 886         i = fops->flush(NULL, id);
 887 ],[
 888         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
 889                 [file_operations .flush method has an fl_owner_t id])
 890         AC_MSG_RESULT([yes])
 891 ],[
 892         AC_MSG_RESULT([no])
 893 ])
 894 ])
 895
 896 #
 897 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
 898 #
 899 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
 900 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
 901 #
 902 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
 903     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
 904          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
 905                         [exported invalidate_mapping_pages])],
 906     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
 907          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
 908                         [exported invalidate_inode_pages])], [
 909        AC_MSG_ERROR([no way to invalidate pages])
 910   ])
 911     ],[])
 912 ])
 913
 914 #2.6.18 + RHEL5 (fc6)
 915
 916 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
 917 AC_DEFUN([LC_PG_FS_MISC],
 918 [AC_MSG_CHECKING([kernel has PG_fs_misc])
 919 LB_LINUX_TRY_COMPILE([
 920         #include <linux/mm.h>
 921         #include <linux/page-flags.h>
 922 ],[
 923         #ifndef PG_fs_misc
 924         #error PG_fs_misc not defined in kernel
 925         #endif
 926 ],[
 927         AC_MSG_RESULT(yes)
 928         AC_DEFINE(HAVE_PG_FS_MISC, 1,
 929                   [is kernel have PG_fs_misc])
 930 ],[
 931         AC_MSG_RESULT(no)
 932 ])
 933 ])
 934
 935 # RHEL5 PageChecked and SetPageChecked defined
 936 AC_DEFUN([LC_PAGE_CHECKED],
 937 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
 938 LB_LINUX_TRY_COMPILE([
 939         #include <linux/mm.h>
 940 #ifdef HAVE_LINUX_MMTYPES_H
 941         #include <linux/mm_types.h>
 942 #endif
 943         #include <linux/page-flags.h>
 944 ],[
 945         struct page *p = NULL;
 946
 947         /* before 2.6.26 this define*/
 948         #ifndef PageChecked
 949         /* 2.6.26 use function instead of define for it */
 950         SetPageChecked(p);
 951         PageChecked(p);
 952         #endif
 953 ],[
 954         AC_MSG_RESULT(yes)
 955         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
 956                   [does kernel have PageChecked and SetPageChecked])
 957 ],[
 958         AC_MSG_RESULT(no)
 959 ])
 960 ])
 961
 962 #
 963 # LC_LINUX_FIEMAP_H
 964 #
 965 # If we have fiemap.h
 966 # after 2.6.27 use fiemap.h in include/linux
 967 #
 968 AC_DEFUN([LC_LINUX_FIEMAP_H],
 969 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
 970         AC_MSG_CHECKING([if fiemap.h can be compiled])
 971         LB_LINUX_TRY_COMPILE([
 972                 #include <linux/types.h>
 973                 #include <linux/fiemap.h>
 974         ],[],[
 975                 AC_MSG_RESULT([yes])
 976                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
 977         ],[
 978                 AC_MSG_RESULT([no])
 979         ])
 980 ],
 981 [])
 982 ])
 983
 984 # 2.6.19
 985
 986 # 2.6.19 API changes
 987 # inode don't have i_blksize field
 988 AC_DEFUN([LC_INODE_BLKSIZE],
 989 [AC_MSG_CHECKING([inode has i_blksize field])
 990 LB_LINUX_TRY_COMPILE([
 991 #include <linux/fs.h>
 992 ],[
 993         struct inode i;
 994         i.i_blksize = 0;
 995 ],[
 996         AC_MSG_RESULT(yes)
 997         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
 998                 [struct inode has i_blksize field])
 999 ],[
1000         AC_MSG_RESULT(no)
1001 ])
1002 ])
1003
1004 # LC_FILE_WRITEV
1005 # 2.6.19 replaced writev with aio_write
1006 AC_DEFUN([LC_FILE_WRITEV],
1007 [AC_MSG_CHECKING([writev in fops])
1008 LB_LINUX_TRY_COMPILE([
1009         #include <linux/fs.h>
1010 ],[
1011         struct file_operations *fops = NULL;
1012         fops->writev = NULL;
1013 ],[
1014         AC_MSG_RESULT(yes)
1015         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1016                 [use fops->writev])
1017 ],[
1018         AC_MSG_RESULT(no)
1019 ])
1020 ])
1021
1022 # LC_FILE_READV
1023 # 2.6.19 replaced readv with aio_read
1024 AC_DEFUN([LC_FILE_READV],
1025 [AC_MSG_CHECKING([readv in fops])
1026 LB_LINUX_TRY_COMPILE([
1027         #include <linux/fs.h>
1028 ],[
1029         struct file_operations *fops = NULL;
1030         fops->readv = NULL;
1031 ],[
1032         AC_MSG_RESULT(yes)
1033         AC_DEFINE(HAVE_FILE_READV, 1,
1034                 [use fops->readv])
1035 ],[
1036         AC_MSG_RESULT(no)
1037 ])
1038 ])
1039
1040 # 2.6.20
1041
1042 # LC_CANCEL_DIRTY_PAGE
1043 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
1044 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1045         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1046         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
1047         # backport is broken, so ignore it
1048         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
1049            test "$(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
1050                 AC_MSG_RESULT(no)
1051         else
1052                 LB_LINUX_TRY_COMPILE([
1053                         #include <linux/mm.h>
1054                         #include <linux/page-flags.h>
1055 ],[
1056                         cancel_dirty_page(NULL, 0);
1057 ],[
1058                         AC_MSG_RESULT(yes)
1059                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1060                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1061 ],[
1062                         AC_MSG_RESULT(no)
1063 ])
1064         fi
1065 ])
1066
1067 # raid5-zerocopy patch
1068
1069 #
1070 # LC_PAGE_CONSTANT
1071 #
1072 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1073 # it support constant page, which means the page won't be modified during the
1074 # IO.
1075 #
1076 AC_DEFUN([LC_PAGE_CONSTANT],
1077 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1078 LB_LINUX_TRY_COMPILE([
1079         #include <linux/mm.h>
1080         #include <linux/page-flags.h>
1081 ],[
1082         #ifndef PG_constant
1083         #error "Have no raid5 zcopy patch"
1084         #endif
1085 ],[
1086         AC_MSG_RESULT(yes)
1087         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1088 ],[
1089         AC_MSG_RESULT(no);
1090 ])
1091 ])
1092
1093 # 2.6.22
1094
1095 # 2.6.22 lost second parameter for invalidate_bdev
1096 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1097 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1098 LB_LINUX_TRY_COMPILE([
1099         #include <linux/buffer_head.h>
1100 ],[
1101         invalidate_bdev(NULL,0);
1102 ],[
1103         AC_MSG_RESULT([yes])
1104         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1105                 [invalidate_bdev has second argument])
1106 ],[
1107         AC_MSG_RESULT([no])
1108 ])
1109 ])
1110
1111 #
1112 # check for crypto API
1113 #
1114 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1115 [AC_MSG_CHECKING([if kernel has block cipher support])
1116 LB_LINUX_TRY_COMPILE([
1117         #include <linux/err.h>
1118         #include <linux/crypto.h>
1119 ],[
1120         struct crypto_blkcipher *tfm;
1121         tfm = crypto_alloc_blkcipher("aes", 0, sizeof(tfm) );
1122 ],[
1123         AC_MSG_RESULT([yes])
1124         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1125 ],[
1126         AC_MSG_RESULT([no])
1127 ])
1128 ])
1129
1130 #
1131 # check for struct hash_desc
1132 #
1133 AC_DEFUN([LC_STRUCT_HASH_DESC],
1134 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1135 LB_LINUX_TRY_COMPILE([
1136         #include <linux/err.h>
1137         #include <linux/crypto.h>
1138 ],[
1139         struct hash_desc foo;
1140 ],[
1141         AC_MSG_RESULT([yes])
1142         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1143 ],[
1144         AC_MSG_RESULT([no])
1145 ])
1146 ])
1147
1148 #
1149 # check for struct blkcipher_desc
1150 #
1151 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1152 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1153 LB_LINUX_TRY_COMPILE([
1154         #include <linux/err.h>
1155         #include <linux/crypto.h>
1156 ],[
1157         struct blkcipher_desc foo;
1158 ],[
1159         AC_MSG_RESULT([yes])
1160         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1161 ],[
1162         AC_MSG_RESULT([no])
1163 ])
1164 ])
1165
1166 #
1167 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1168 #
1169 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1170 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1171 LB_LINUX_TRY_COMPILE([
1172         #include <linux/fs.h>
1173 ],[
1174         int v = FS_RENAME_DOES_D_MOVE;
1175 ],[
1176         AC_MSG_RESULT([yes])
1177         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1178 ],[
1179         AC_MSG_RESULT([no])
1180 ])
1181 ])
1182
1183 # 2.6.23
1184
1185 # 2.6.23 have return type 'void' for unregister_blkdev
1186 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1187 [AC_MSG_CHECKING([if unregister_blkdev return int])
1188 LB_LINUX_TRY_COMPILE([
1189         #include <linux/fs.h>
1190 ],[
1191         int i = unregister_blkdev(0,NULL);
1192 ],[
1193         AC_MSG_RESULT([yes])
1194         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1195                 [unregister_blkdev return int])
1196 ],[
1197         AC_MSG_RESULT([no])
1198 ])
1199 ])
1200
1201 # 2.6.23 change .sendfile to .splice_read
1202 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1203 [AC_MSG_CHECKING([if kernel has .splice_read])
1204 LB_LINUX_TRY_COMPILE([
1205         #include <linux/fs.h>
1206 ],[
1207         struct file_operations file;
1208
1209         file.splice_read = NULL;
1210 ], [
1211         AC_MSG_RESULT([yes])
1212         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1213                 [kernel has .slice_read])
1214 ],[
1215         AC_MSG_RESULT([no])
1216 ])
1217 ])
1218
1219 # 2.6.23 change .sendfile to .splice_read
1220 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1221 AC_DEFUN([LC_KERNEL_SENDFILE],
1222 [AC_MSG_CHECKING([if kernel has .sendfile])
1223 LB_LINUX_TRY_COMPILE([
1224         #include <linux/fs.h>
1225 ],[
1226         struct file_operations file;
1227
1228         file.sendfile = NULL;
1229 ], [
1230         AC_MSG_RESULT([yes])
1231         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1232                 [kernel has .sendfile])
1233 ],[
1234         AC_MSG_RESULT([no])
1235 ])
1236 ])
1237
1238 # 2.6.23 extract nfs export related data into exportfs.h
1239 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1240 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1241         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1242                 [kernel has include/exportfs.h])
1243 ],[
1244         AC_MSG_RESULT([no])
1245 ])
1246 ])
1247
1248 # 2.6.23 has new page fault handling API
1249 AC_DEFUN([LC_VM_OP_FAULT],
1250 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1251 LB_LINUX_TRY_COMPILE([
1252         #include <linux/mm.h>
1253 ],[
1254         struct vm_operations_struct op;
1255
1256         op.fault = NULL;
1257 ], [
1258         AC_MSG_RESULT([yes])
1259         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1260                 [kernel has .fault in vm_operation_struct])
1261 ],[
1262         AC_MSG_RESULT([no])
1263 ])
1264 ])
1265
1266 # 2.6.23 add code to wait other users to complete before removing procfs entry
1267 AC_DEFUN([LC_PROCFS_USERS],
1268 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1269 LB_LINUX_TRY_COMPILE([
1270         #include <linux/proc_fs.h>
1271 ],[
1272         struct proc_dir_entry pde;
1273
1274         pde.pde_users   = 0;
1275 ],[
1276         AC_MSG_RESULT([yes])
1277         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1278                 [kernel has pde_users member in procfs entry struct])
1279 ],[
1280         AC_MSG_RESULT([no])
1281 ])
1282 ])
1283
1284 # 2.6.23 exports exportfs_decode_fh
1285 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1286 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1287 [fs/exportfs/expfs.c],[
1288         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1289                 [exportfs_decode_fh has been export])
1290 ],[
1291 ])
1292 ])
1293
1294 # 2.6.24
1295
1296 # 2.6.24 need linux/mm_types.h included
1297 AC_DEFUN([LC_HAVE_MMTYPES_H],
1298 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1299         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1300                 [kernel has include/mm_types.h])
1301 ],[
1302         AC_MSG_RESULT([no])
1303 ])
1304 ])
1305
1306 # 2.6.24 has bio_endio with 2 args
1307 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1308 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1309 LB_LINUX_TRY_COMPILE([
1310         #include <linux/bio.h>
1311 ],[
1312         bio_endio(NULL, 0);
1313 ], [
1314         AC_MSG_RESULT([yes])
1315         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1316                 [kernel has bio_endio with 2 args])
1317 ],[
1318         AC_MSG_RESULT([no])
1319 ])
1320 ])
1321
1322 # 2.6.24 has new members in exports struct.
1323 AC_DEFUN([LC_FH_TO_DENTRY],
1324 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1325 LB_LINUX_TRY_COMPILE([
1326         #include <linux/fs.h>
1327 #ifdef HAVE_LINUX_EXPORTFS_H
1328         #include <linux/exportfs.h>
1329 #endif
1330 ],[
1331         do{ }while(sizeof(((struct export_operations *)0)->fh_to_dentry));
1332 ], [
1333         AC_MSG_RESULT([yes])
1334         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1335                 [kernel has .fh_to_dentry member in export_operations struct])
1336 ],[
1337         AC_MSG_RESULT([no])
1338 ])
1339 ])
1340
1341 # 2.6.24 removes long aged procfs entry -> deleted member
1342 AC_DEFUN([LC_PROCFS_DELETED],
1343 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1344 LB_LINUX_TRY_COMPILE([
1345         #include <linux/proc_fs.h>
1346 ],[
1347         struct proc_dir_entry pde;
1348
1349         pde.deleted = sizeof(pde);
1350 ], [
1351         AC_MSG_RESULT([yes])
1352         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1353                 [kernel has deleted member in procfs entry struct])
1354 ],[
1355         AC_MSG_RESULT([no])
1356 ])
1357 ])
1358
1359 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1360 AC_DEFUN([LC_EXPORT_BDI_INIT],
1361 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1362 [mm/backing-dev.c],[
1363         AC_DEFINE(HAVE_BDI_INIT, 1,
1364                 [bdi_init/bdi_destroy functions are present])
1365 ],[
1366 ])
1367 ])
1368
1369 # 2.6.26
1370
1371 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1372 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1373 [AC_MSG_CHECKING([fs_struct use path structure])
1374 LB_LINUX_TRY_COMPILE([
1375         #include <asm/atomic.h>
1376         #include <linux/spinlock.h>
1377         #include <linux/fs_struct.h>
1378 ],[
1379         struct fs_struct fs;
1380
1381         fs.pwd = *((struct path *)sizeof(fs));
1382 ], [
1383         AC_MSG_RESULT([yes])
1384         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1385                 [fs_struct use path structure])
1386 ],[
1387         AC_MSG_RESULT([no])
1388 ])
1389 ])
1390
1391
1392 #
1393 # 2.6.27
1394 #
1395 AC_DEFUN([LC_PGMKWRITE_USE_VMFAULT],
1396 [AC_MSG_CHECKING([kernel .page_mkwrite uses struct vm_fault *])
1397 tmp_flags="$EXTRA_KCFLAGS"
1398 EXTRA_KCFLAGS="-Werror"
1399 LB_LINUX_TRY_COMPILE([
1400         #include <linux/mm.h>
1401 ],[
1402         ((struct vm_operations_struct *)0)->page_mkwrite((struct vm_area_struct *)0, (struct vm_fault *)0);
1403 ], [
1404         AC_MSG_RESULT([yes])
1405         AC_DEFINE(HAVE_PGMKWRITE_USE_VMFAULT, 1,
1406                 [kernel vm_operation_struct.page_mkwrite uses struct vm_fault * as second parameter])
1407 ],[
1408         AC_MSG_RESULT([no])
1409 ])
1410 EXTRA_KCFLAGS="$tmp_flags"
1411 ])
1412
1413 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1414 [AC_MSG_CHECKING([inode_operations->permission has two args])
1415 LB_LINUX_TRY_COMPILE([
1416         #include <linux/fs.h>
1417 ],[
1418         struct inode *inode;
1419         inode->i_op->permission(NULL, 0);
1420 ],[
1421         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1422                   [inode_operations->permission has two args])
1423         AC_MSG_RESULT([yes])
1424 ],[
1425         AC_MSG_RESULT([no])
1426 ])
1427 ])
1428
1429 # 2.6.27 has file_remove_suid instead of remove_suid
1430 AC_DEFUN([LC_FILE_REMOVE_SUID],
1431 [AC_MSG_CHECKING([kernel has file_remove_suid])
1432 LB_LINUX_TRY_COMPILE([
1433         #include <linux/fs.h>
1434 ],[
1435         file_remove_suid(NULL);
1436 ],[
1437         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1438                   [kernel have file_remove_suid])
1439         AC_MSG_RESULT([yes])
1440 ],[
1441         AC_MSG_RESULT([no])
1442 ])
1443 ])
1444
1445 # 2.6.27 have new page locking API
1446 AC_DEFUN([LC_TRYLOCKPAGE],
1447 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1448 LB_LINUX_TRY_COMPILE([
1449         #include <linux/pagemap.h>
1450 ],[
1451         trylock_page(NULL);
1452 ],[
1453         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1454                   [kernel uses trylock_page for page lock])
1455         AC_MSG_RESULT([yes])
1456 ],[
1457         AC_MSG_RESULT([no])
1458 ])
1459 ])
1460
1461 # 2.6.27 removed the read_inode from super_operations.
1462 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1463 [AC_MSG_CHECKING([super_operations has a read_inode field])
1464 LB_LINUX_TRY_COMPILE([
1465         #include <linux/fs.h>
1466 ],[
1467         struct super_operations *sop;
1468         sop->read_inode(NULL);
1469 ],[
1470         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1471                 [super_operations has a read_inode])
1472         AC_MSG_RESULT([yes])
1473 ],[
1474         AC_MSG_RESULT([no])
1475 ])
1476 ])
1477
1478 # 2.6.27 has inode_permission instead of permisson
1479 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1480 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1481 [fs/namei.c],[
1482 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1483             [inode_permission is exported by the kernel])
1484 ],[
1485 ])
1486 ])
1487
1488 # 2.6.27 use 5th parameter in quota_on for remount.
1489 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1490 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1491 LB_LINUX_TRY_COMPILE([
1492         #include <linux/quota.h>
1493 ],[
1494         struct quotactl_ops *qop;
1495         qop->quota_on(NULL, 0, 0, NULL, 0);
1496 ],[
1497         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1498                 [quota_on needs 5 paramters])
1499         AC_MSG_RESULT([yes])
1500 ],[
1501         AC_MSG_RESULT([no])
1502 ])
1503 ])
1504
1505 # 2.6.27 use 3th parameter in quota_off for remount.
1506 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1507 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1508 LB_LINUX_TRY_COMPILE([
1509         #include <linux/quota.h>
1510 ],[
1511         struct quotactl_ops *qop;
1512         qop->quota_off(NULL, 0, 0);
1513 ],[
1514         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1515                 [quota_off needs 3 paramters])
1516         AC_MSG_RESULT([yes])
1517 ],[
1518         AC_MSG_RESULT([no])
1519 ])
1520 ])
1521
1522 # 2.6.27 has vfs_dq_off inline function.
1523 AC_DEFUN([LC_VFS_DQ_OFF],
1524 [AC_MSG_CHECKING([vfs_dq_off is defined])
1525 LB_LINUX_TRY_COMPILE([
1526         #include <linux/quotaops.h>
1527 ],[
1528         vfs_dq_off(NULL, 0);
1529 ],[
1530         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1531         AC_MSG_RESULT([yes])
1532 ],[
1533         AC_MSG_RESULT([no])
1534 ])
1535 ])
1536
1537 # LC_LOCK_MAP_ACQUIRE
1538 # after 2.6.27 lock_map_acquire replaces lock_acquire
1539 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1540 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1541 LB_LINUX_TRY_COMPILE([
1542         #include <linux/lockdep.h>
1543 ],[
1544         lock_map_acquire(NULL);
1545 ],[
1546         AC_MSG_RESULT(yes)
1547         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1548                 [lock_map_acquire is defined])
1549 ],[
1550         AC_MSG_RESULT(no)
1551 ])
1552 ])
1553
1554 # 2.6.27.15-2 sles11
1555
1556 # 2.6.27 sles11 remove the bi_hw_segments
1557 AC_DEFUN([LC_BI_HW_SEGMENTS],
1558 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1559 LB_LINUX_TRY_COMPILE([
1560         #include <linux/bio.h>
1561 ],[
1562         struct bio io;
1563         io.bi_hw_segments = sizeof(io);
1564 ],[
1565         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1566                 [struct bio has a bi_hw_segments field])
1567         AC_MSG_RESULT([yes])
1568 ],[
1569         AC_MSG_RESULT([no])
1570 ])
1571 ])
1572
1573 #
1574 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1575 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1576 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1577 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1578         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1579                 [kernel has include/linux/quotaio_v2.h])
1580 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1581                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1582                 [kernel has fs/quotaio_v1.h])
1583 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1584                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1585                 [kernel has fs/quota/quotaio_v2.h])
1586 ],[
1587         AC_MSG_RESULT([no])
1588 ])
1589 ])
1590 ])
1591 ])
1592
1593 # 2.6.27 sles11 has sb_any_quota_active
1594 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1595 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1596 LB_LINUX_TRY_COMPILE([
1597         #include <linux/quotaops.h>
1598 ],[
1599         sb_any_quota_active(NULL);
1600 ],[
1601         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1602                 [Kernel has a sb_any_quota_active])
1603         AC_MSG_RESULT([yes])
1604 ],[
1605         AC_MSG_RESULT([no])
1606 ])
1607 ])
1608
1609 # 2.6.27 sles11 has sb_has_quota_active
1610 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1611 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1612 LB_LINUX_TRY_COMPILE([
1613         #include <linux/quotaops.h>
1614 ],[
1615         sb_has_quota_active(NULL, 0);
1616 ],[
1617         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1618                 [Kernel has a sb_has_quota_active])
1619         AC_MSG_RESULT([yes])
1620 ],[
1621         AC_MSG_RESULT([no])
1622 ])
1623 ])
1624
1625 # 2.6.27 exported add_to_page_cache_lru.
1626 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1627 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1628 [mm/filemap.c],[
1629         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1630                 [add_to_page_cache_lru functions are present])
1631 ],[
1632 ])
1633 ])
1634
1635 #
1636 # 2.6.29 introduce sb_any_quota_loaded.
1637 #
1638 AC_DEFUN([LC_SB_ANY_QUOTA_LOADED],
1639 [AC_MSG_CHECKING([Kernel has sb_any_quota_loaded])
1640 LB_LINUX_TRY_COMPILE([
1641         #include <linux/quotaops.h>
1642 ],[
1643         sb_any_quota_loaded(NULL);
1644 ],[
1645         AC_DEFINE(HAVE_SB_ANY_QUOTA_LOADED, 1,
1646                 [Kernel has a sb_any_quota_loaded])
1647         AC_MSG_RESULT([yes])
1648 ],[
1649         AC_MSG_RESULT([no])
1650 ])
1651 ])
1652
1653 # 2.6.30 x86 node_to_cpumask has been removed. must use cpumask_of_node
1654 AC_DEFUN([LC_EXPORT_CPUMASK_OF_NODE],
1655          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask_map],
1656                                  [arch/$LINUX_ARCH/mm/numa.c],
1657                                  [AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1,
1658                                             [node_to_cpumask_map is exported by
1659                                              the kernel])]) # x86_64
1660          ])
1661
1662 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1663 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1664 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1665 LB_LINUX_TRY_COMPILE([
1666         #include <linux/blkdev.h>
1667 ],[
1668         blk_queue_logical_block_size(NULL, 0);
1669 ],[
1670         AC_MSG_RESULT(yes)
1671         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1672                   [blk_queue_logical_block_size is defined])
1673 ],[
1674         AC_MSG_RESULT(no)
1675 ])
1676 ])
1677
1678 # 2.6.32
1679
1680 # 2.6.32 changes cache_detail's member cache_request to cache_upcall
1681 # in kernel commit bc74b4f5e63a09fb78e245794a0de1e5a2716bbe
1682 AC_DEFUN([LC_CACHE_UPCALL],
1683 [AC_MSG_CHECKING([if cache_detail has cache_upcall field])
1684         LB_LINUX_TRY_COMPILE([
1685                 #include <linux/sunrpc/cache.h>
1686         ],[
1687                 struct cache_detail cd;
1688                 cd.cache_upcall = NULL;
1689         ],[
1690                 AC_MSG_RESULT(yes)
1691                 AC_DEFINE(HAVE_CACHE_UPCALL, 1,
1692                           [cache_detail has cache_upcall field])
1693         ],[
1694                 AC_MSG_RESULT(no)
1695         ])
1696 ])
1697
1698 # 2.6.32 add a limits member in struct request_queue.
1699 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1700 [AC_MSG_CHECKING([if request_queue has a limits field])
1701 LB_LINUX_TRY_COMPILE([
1702         #include <linux/blkdev.h>
1703 ],[
1704         struct request_queue rq;
1705         rq.limits.io_min = 0;
1706 ],[
1707         AC_MSG_RESULT(yes)
1708         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1709                   [request_queue has a limits field])
1710 ],[
1711         AC_MSG_RESULT(no)
1712 ])
1713 ])
1714
1715 # 2.6.32 has bdi_register() functions.
1716 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1717 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1718 [mm/backing-dev.c],[
1719         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1720                 [bdi_register function is present])
1721 ],[
1722 ])
1723 ])
1724
1725 # 2.6.32 add s_bdi for super block
1726 AC_DEFUN([LC_SB_BDI],
1727 [AC_MSG_CHECKING([if super_block has s_bdi field])
1728 LB_LINUX_TRY_COMPILE([
1729         #include <linux/fs.h>
1730 ],[
1731         struct super_block sb;
1732         sb.s_bdi = NULL;
1733 ],[
1734         AC_MSG_RESULT(yes)
1735         AC_DEFINE(HAVE_SB_BDI, 1,
1736                   [super_block has s_bdi field])
1737 ],[
1738         AC_MSG_RESULT(no)
1739 ])
1740 ])
1741
1742 #  2.6.27.15-2 SuSE 11 sp0 kernels lack the name field for BDI
1743 AC_DEFUN([LC_BDI_NAME],
1744 [AC_MSG_CHECKING([if backing_device_info has name field])
1745 LB_LINUX_TRY_COMPILE([
1746         #include <linux/blkkdev.h>
1747 ],[
1748         struct backing_dev_info bdi;
1749         bdi.name = NULL;
1750 ],[
1751         AC_MSG_RESULT(yes)
1752         AC_DEFINE(HAVE_BDI_NAME, 1,
1753                   [backing_device_info has name field])
1754 ],[
1755         AC_MSG_RESULT(no)
1756 ])
1757 ])
1758
1759 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1760 # check blk_queue_max_sectors and use it until disappear.
1761 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
1762 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
1763 LB_LINUX_TRY_COMPILE([
1764         #include <linux/blkdev.h>
1765 ],[
1766         blk_queue_max_sectors(NULL, 0);
1767 ],[
1768         AC_MSG_RESULT(yes)
1769         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
1770                   [blk_queue_max_sectors is defined])
1771 ],[
1772         AC_MSG_RESULT(no)
1773 ])
1774 ])
1775
1776 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
1777 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
1778 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
1779 LB_LINUX_TRY_COMPILE([
1780         #include <linux/blkdev.h>
1781 ],[
1782         blk_queue_max_segments(NULL, 0);
1783 ],[
1784         AC_MSG_RESULT(yes)
1785         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
1786                   [blk_queue_max_segments is defined])
1787 ],[
1788         AC_MSG_RESULT(no)
1789 ])
1790 ])
1791
1792 #
1793 # LC_QUOTA64
1794 #
1795 # Check if kernel has been patched for 64-bit quota limits support.
1796 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
1797 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
1798 # that in the absence of quotaio_v1.h in the kernel headers.
1799 #
1800 AC_DEFUN([LC_QUOTA64],[
1801         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
1802 tmp_flags="$EXTRA_KCFLAGS"
1803 EXTRA_KCFLAGS="-I$LINUX/fs"
1804         LB_LINUX_TRY_COMPILE([
1805                 #include <linux/kernel.h>
1806                 #include <linux/fs.h>
1807                 #ifdef HAVE_QUOTAIO_H
1808                 # include <linux/quotaio_v2.h>
1809                 int versions[] = V2_INITQVERSIONS_R1;
1810                 struct v2_disk_dqblk_r1 dqblk_r1;
1811                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
1812                 # include <quota/quotaio_v2.h>
1813                 struct v2r1_disk_dqblk dqblk_r1;
1814                 #elif defined(HAVE_FS_QUOTAIO_H)
1815                 # include <quotaio_v2.h>
1816                 struct v2r1_disk_dqblk dqblk_r1;
1817                 #else
1818                 #include <linux/quota.h>
1819                 int ver = QFMT_VFS_V1;
1820                 #endif
1821         ],[],[
1822                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
1823                 AC_MSG_RESULT([yes])
1824         ],[
1825                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
1826                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
1827                 ],[])
1828                 AC_MSG_RESULT([no])
1829         ])
1830 EXTRA_KCFLAGS=$tmp_flags
1831 ])
1832
1833 # 2.6.32 set_cpus_allowed is no more defined if CONFIG_CPUMASK_OFFSTACK=yes
1834 AC_DEFUN([LC_SET_CPUS_ALLOWED],
1835          [AC_MSG_CHECKING([if kernel defines set_cpus_allowed])
1836           LB_LINUX_TRY_COMPILE(
1837                 [#include <linux/sched.h>],
1838                 [struct task_struct *p = NULL;
1839                  cpumask_t mask = { { 0 } };
1840                  (void) set_cpus_allowed(p, mask);],
1841                 [AC_MSG_RESULT([yes])
1842                  AC_DEFINE(HAVE_SET_CPUS_ALLOWED, 1,
1843                            [set_cpus_allowed is exported by the kernel])],
1844                 [AC_MSG_RESULT([no])] )])
1845
1846 #
1847 # LC_D_OBTAIN_ALIAS
1848 # starting from 2.6.28 kernel replaces d_alloc_anon() with
1849 # d_obtain_alias() for getting anonymous dentries
1850 # RHEL5(2.6.18) has d_obtain_alias but SLES11SP0(2.6.27) not
1851 #
1852 AC_DEFUN([LC_D_OBTAIN_ALIAS],
1853 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
1854 LB_LINUX_TRY_COMPILE([
1855         #include <linux/dcache.h>
1856 ],[
1857         d_obtain_alias(NULL);
1858 ],[
1859         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
1860                 [d_obtain_alias exist in kernel])
1861         AC_MSG_RESULT([yes])
1862 ],[
1863         AC_MSG_RESULT([no])
1864 ])
1865 ])
1866
1867 #
1868 # LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
1869 #
1870 AC_DEFUN([LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE],
1871          [LB_CHECK_SYMBOL_EXPORT(
1872                         [generic_error_remove_page],
1873                         [mm/truncate.c],
1874                         [AC_DEFINE(HAS_GENERIC_ERROR_REMOVE_PAGE, 1,
1875                                 [kernel export generic_error_remove_page])],
1876                         [])
1877          ]
1878 )
1879
1880 #
1881 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
1882 #
1883 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
1884 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
1885 LB_LINUX_TRY_COMPILE([
1886         #include <asm/atomic.h>
1887         #include <linux/spinlock.h>
1888         #include <linux/fs_struct.h>
1889 ],[
1890         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
1891 ],[
1892         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
1893                   [fs_struct.lock use rwlock])
1894         AC_MSG_RESULT([yes])
1895 ],[
1896         AC_MSG_RESULT([no])
1897 ])
1898 ])
1899
1900 #
1901 # 2.6.36 super_operations add evict_inode method. it hybird of
1902 # delete_inode & clear_inode.
1903 #
1904 AC_DEFUN([LC_SBOPS_EVICT_INODE],
1905 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
1906 LB_LINUX_TRY_COMPILE([
1907         #include <linux/fs.h>
1908 ],[
1909         ((struct super_operations *)0)->evict_inode(NULL);
1910 ],[
1911         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
1912                 [super_operations.evict_inode() is exist in kernel])
1913         AC_MSG_RESULT([yes])
1914 ],[
1915         AC_MSG_RESULT([no])
1916 ])
1917 ])
1918
1919 #
1920 # 2.6.35 file_operations.fsync taken 2 arguments.
1921 # 3.0.0 file_operations.fsync takes 4 arguments.
1922 #
1923 AC_DEFUN([LC_FILE_FSYNC],
1924 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
1925 LB_LINUX_TRY_COMPILE([
1926         #include <linux/fs.h>
1927 ],[
1928         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
1929 ],[
1930         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
1931                 [file_operations.fsync takes 4 arguments])
1932         AC_MSG_RESULT([yes, 4 args])
1933 ],[
1934         LB_LINUX_TRY_COMPILE([
1935                 #include <linux/fs.h>
1936         ],[
1937            ((struct file_operations *)0)->fsync(NULL, 0);
1938         ],[
1939                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
1940                         [file_operations.fsync takes 2 arguments])
1941                 AC_MSG_RESULT([yes, 2 args])
1942         ],[
1943                 AC_MSG_RESULT([no])
1944         ])
1945 ])
1946 ])
1947
1948 #
1949 # 2.6.38 export blkdev_get_by_dev
1950 #
1951 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
1952 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
1953 [fs/block_dev.c],[
1954 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
1955             [blkdev_get_by_dev is exported by the kernel])
1956 ],[
1957 ])
1958 ])
1959
1960 #
1961 # 2.6.38 vfsmount.mnt_count doesn't use atomic_t
1962 #
1963 AC_DEFUN([LC_ATOMIC_MNT_COUNT],
1964 [AC_MSG_CHECKING([if vfsmount.mnt_count is atomic_t])
1965 LB_LINUX_TRY_COMPILE([
1966         #include <asm/atomic.h>
1967         #include <linux/fs.h>
1968         #include <linux/mount.h>
1969 ],[
1970         ((struct vfsmount *)0)->mnt_count = ((atomic_t) { 0 });
1971 ],[
1972         AC_DEFINE(HAVE_ATOMIC_MNT_COUNT, 1,
1973                 [vfsmount.mnt_count is atomic_t])
1974         AC_MSG_RESULT([yes])
1975 ],[
1976         AC_MSG_RESULT([no])
1977 ])
1978 ])
1979
1980 #
1981 # 2.6.38 use path as 4th parameter in quota_on.
1982 #
1983 AC_DEFUN([LC_QUOTA_ON_USE_PATH],
1984 [AC_MSG_CHECKING([quota_on use path as parameter])
1985 tmp_flags="$EXTRA_KCFLAGS"
1986 EXTRA_KCFLAGS="-Werror"
1987 LB_LINUX_TRY_COMPILE([
1988         #include <linux/fs.h>
1989         #include <linux/quota.h>
1990 ],[
1991         ((struct quotactl_ops *)0)->quota_on(NULL, 0, 0, ((struct path*)0));
1992 ],[
1993         AC_DEFINE(HAVE_QUOTA_ON_USE_PATH, 1,
1994                 [quota_on use path as 4th paramter])
1995         AC_MSG_RESULT([yes])
1996 ],[
1997         AC_MSG_RESULT([no])
1998 ])
1999 EXTRA_KCFLAGS="$tmp_flags"
2000 ])
2001
2002 #
2003 # 2.6.39 remove unplug_fn from request_queue.
2004 #
2005 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
2006 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
2007 LB_LINUX_TRY_COMPILE([
2008         #include <linux/blkdev.h>
2009 ],[
2010         do{ }while(sizeof(((struct request_queue *)0)->unplug_fn));
2011 ],[
2012         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
2013                   [request_queue has unplug_fn field])
2014         AC_MSG_RESULT([yes])
2015 ],[
2016         AC_MSG_RESULT([no])
2017 ])
2018 ])
2019
2020 #
2021 # 2.6.38 generic_permission taken 4 paremater.
2022 # in fact, it means rcu-walk aware permission bring.
2023 #
2024 AC_DEFUN([LC_GENERIC_PERMISSION],
2025 [AC_MSG_CHECKING([if generic_permission take 4 arguments])
2026 LB_LINUX_TRY_COMPILE([
2027         #include <linux/fs.h>
2028 ],[
2029         generic_permission(NULL, 0, 0, NULL);
2030 ],[
2031         AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
2032                   [generic_permission taken 4 arguments])
2033         AC_MSG_RESULT([yes])
2034 ],[
2035         AC_MSG_RESULT([no])
2036 ])
2037 ])
2038
2039 #
2040 # 2.6.38 export simple_setattr
2041 #
2042 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
2043 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
2044 [fs/libfs.c],[
2045 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
2046             [simple_setattr is exported by the kernel])
2047 ],[
2048 ])
2049 ])
2050
2051 #
2052 # LC_PROG_LINUX
2053 #
2054 # Lustre linux kernel checks
2055 #
2056 AC_DEFUN([LC_PROG_LINUX],
2057          [LC_LUSTRE_VERSION_H
2058          LC_CONFIG_PINGER
2059          LC_CONFIG_CHECKSUM
2060          LC_CONFIG_LIBLUSTRE_RECOVERY
2061          LC_CONFIG_HEALTH_CHECK_WRITE
2062          LC_CONFIG_LRU_RESIZE
2063          LC_QUOTA_MODULE
2064          LC_LLITE_LLOOP_MODULE
2065
2066          # RHEL4 patches
2067          LC_EXPORT_TRUNCATE_COMPLETE
2068          LC_EXPORT_D_REHASH_COND
2069          LC_EXPORT___D_REHASH
2070          LC_EXPORT_NODE_TO_CPUMASK
2071
2072          LC_FILEMAP_POPULATE
2073          LC_BIT_SPINLOCK_H
2074
2075          LC_CONST_ACL_SIZE
2076
2077          LC_STRUCT_INTENT_FILE
2078
2079          LC_CAPA_CRYPTO
2080          LC_CONFIG_RMTCLIENT
2081          LC_CONFIG_GSS
2082          LC_FUNC_HAVE_CAN_SLEEP_ARG
2083          LC_FUNC_F_OP_FLOCK
2084          LC_QUOTA_READ
2085          LC_COOKIE_FOLLOW_LINK
2086          LC_FUNC_RCU
2087          LC_PERCPU_COUNTER
2088          LC_TASK_CLENV_STORE
2089
2090          # ~2.6.11
2091          LC_S_TIME_GRAN
2092          LC_SB_TIME_GRAN
2093
2094          # 2.6.12
2095          LC_RW_TREE_LOCK
2096
2097          # 2.6.15
2098          LC_INODE_I_MUTEX
2099
2100          # 2.6.16
2101          LC_SECURITY_PLUG  # for SLES10 SP2
2102
2103          # 2.6.17
2104          LC_INODE_IPRIVATE
2105          LC_DQUOTOFF_MUTEX
2106
2107          # 2.6.18
2108          LC_NR_PAGECACHE
2109          LC_STATFS_DENTRY_PARAM
2110          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2111          LC_FLUSH_OWNER_ID
2112          if test x$enable_server = xyes ; then
2113                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2114          fi
2115
2116          #2.6.18 + RHEL5 (fc6)
2117          LC_PG_FS_MISC
2118          LC_PAGE_CHECKED
2119          LC_LINUX_FIEMAP_H
2120
2121          # 2.6.19
2122          LC_INODE_BLKSIZE
2123          LC_FILE_WRITEV
2124          LC_FILE_READV
2125
2126          # 2.6.20
2127          LC_CANCEL_DIRTY_PAGE
2128
2129          # raid5-zerocopy patch
2130          LC_PAGE_CONSTANT
2131
2132          # 2.6.22
2133          LC_INVALIDATE_BDEV_2ARG
2134          LC_ASYNC_BLOCK_CIPHER
2135          LC_STRUCT_HASH_DESC
2136          LC_STRUCT_BLKCIPHER_DESC
2137          LC_FS_RENAME_DOES_D_MOVE
2138
2139          # 2.6.23
2140          LC_UNREGISTER_BLKDEV_RETURN_INT
2141          LC_KERNEL_SPLICE_READ
2142          LC_KERNEL_SENDFILE
2143          LC_HAVE_EXPORTFS_H
2144          LC_VM_OP_FAULT
2145          LC_PROCFS_USERS
2146          LC_EXPORTFS_DECODE_FH
2147
2148          # 2.6.24
2149          LC_HAVE_MMTYPES_H
2150          LC_BIO_ENDIO_2ARG
2151          LC_FH_TO_DENTRY
2152          LC_PROCFS_DELETED
2153          LC_EXPORT_BDI_INIT
2154
2155          # 2.6.26
2156          LC_FS_STRUCT_USE_PATH
2157
2158          # 2.6.27
2159          LC_PGMKWRITE_USE_VMFAULT
2160          LC_INODE_PERMISION_2ARGS
2161          LC_FILE_REMOVE_SUID
2162          LC_TRYLOCKPAGE
2163          LC_READ_INODE_IN_SBOPS
2164          LC_EXPORT_INODE_PERMISSION
2165          LC_QUOTA_ON_5ARGS
2166          LC_QUOTA_OFF_3ARGS
2167          LC_VFS_DQ_OFF
2168          LC_LOCK_MAP_ACQUIRE
2169
2170          # 2.6.27.15-2 sles11
2171          LC_BI_HW_SEGMENTS
2172          LC_HAVE_QUOTAIO_H
2173          LC_BDI_NAME
2174          LC_SB_ANY_QUOTA_ACTIVE
2175          LC_SB_HAS_QUOTA_ACTIVE
2176          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
2177
2178          # 2.6.29
2179          LC_SB_ANY_QUOTA_LOADED
2180
2181          # 2.6.30
2182          LC_EXPORT_CPUMASK_OF_NODE
2183
2184          # 2.6.31
2185          LC_BLK_QUEUE_LOG_BLK_SIZE
2186
2187          # 2.6.32
2188          LC_REQUEST_QUEUE_LIMITS
2189          LC_EXPORT_BDI_REGISTER
2190          LC_SB_BDI
2191          LC_BLK_QUEUE_MAX_SECTORS
2192          LC_BLK_QUEUE_MAX_SEGMENTS
2193          LC_SET_CPUS_ALLOWED
2194          LC_CACHE_UPCALL
2195          LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
2196
2197          # 2.6.35, 3.0.0
2198          LC_FILE_FSYNC
2199          LC_EXPORT_SIMPLE_SETATTR
2200
2201          # 2.6.36
2202          LC_FS_STRUCT_RWLOCK
2203          LC_SBOPS_EVICT_INODE
2204
2205          # 2.6.38
2206          LC_ATOMIC_MNT_COUNT
2207          LC_BLKDEV_GET_BY_DEV
2208          LC_GENERIC_PERMISSION
2209          LC_QUOTA_ON_USE_PATH
2210
2211          # 2.6.39
2212          LC_REQUEST_QUEUE_UNPLUG_FN
2213
2214          #
2215          if test x$enable_server = xyes ; then
2216              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2217              LC_FUNC_DEV_SET_RDONLY
2218              LC_STACK_SIZE
2219              LC_QUOTA64
2220          fi
2221 ])
2222
2223 #
2224 # LC_CONFIG_CLIENT_SERVER
2225 #
2226 # Build client/server sides of Lustre
2227 #
2228 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2229 [AC_MSG_CHECKING([whether to build Lustre server support])
2230 AC_ARG_ENABLE([server],
2231         AC_HELP_STRING([--disable-server],
2232                         [disable Lustre server support]),
2233         [],[enable_server='yes'])
2234 AC_MSG_RESULT([$enable_server])
2235
2236 AC_MSG_CHECKING([whether to build Lustre client support])
2237 AC_ARG_ENABLE([client],
2238         AC_HELP_STRING([--disable-client],
2239                         [disable Lustre client support]),
2240         [],[enable_client='yes'])
2241 AC_MSG_RESULT([$enable_client])])
2242
2243 #
2244 # LC_CONFIG_LIBLUSTRE
2245 #
2246 # whether to build liblustre
2247 #
2248 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2249 [AC_MSG_CHECKING([whether to build Lustre library])
2250 AC_ARG_ENABLE([liblustre],
2251         AC_HELP_STRING([--disable-liblustre],
2252                         [disable building of Lustre library]),
2253         [],[enable_liblustre=$with_sysio])
2254 AC_MSG_RESULT([$enable_liblustre])
2255 # only build sysio if liblustre is built
2256 with_sysio="$enable_liblustre"
2257
2258 AC_MSG_CHECKING([whether to build liblustre tests])
2259 AC_ARG_ENABLE([liblustre-tests],
2260         AC_HELP_STRING([--enable-liblustre-tests],
2261                         [enable liblustre tests, if --disable-tests is used]),
2262         [],[enable_liblustre_tests=$enable_tests])
2263 if test x$enable_liblustre != xyes ; then
2264    enable_liblustre_tests='no'
2265 fi
2266 AC_MSG_RESULT([$enable_liblustre_tests])
2267
2268 AC_MSG_CHECKING([whether to enable liblustre acl])
2269 AC_ARG_ENABLE([liblustre-acl],
2270         AC_HELP_STRING([--disable-liblustre-acl],
2271                         [disable ACL support for liblustre]),
2272         [],[enable_liblustre_acl=yes])
2273 AC_MSG_RESULT([$enable_liblustre_acl])
2274 if test x$enable_liblustre_acl = xyes ; then
2275   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2276 fi
2277
2278 # 2.6.29 change prepare/commit_write to write_begin/end
2279 AC_DEFUN([LC_WRITE_BEGIN_END],
2280 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2281 LB_LINUX_TRY_COMPILE([
2282         #include <linux/fs.h>
2283         #include <linux/pagemap.h>
2284 #ifdef HAVE_LINUX_MMTYPES_H
2285         #include <linux/mm_types.h>
2286 #endif
2287 ],[
2288         struct address_space_operations aops;
2289         struct page *page;
2290
2291         aops.write_begin = NULL;
2292         aops.write_end = NULL;
2293         page = grab_cache_page_write_begin(NULL, 0, 0);
2294 ], [
2295         AC_MSG_RESULT([yes])
2296         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2297                 [kernel has .write_begin/end])
2298 ],[
2299         AC_MSG_RESULT([no])
2300 ])
2301 ])
2302
2303 # 2.6.29 blkdev_put has 2 arguments
2304 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2305 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2306 LB_LINUX_TRY_COMPILE([
2307         #include <linux/fs.h>
2308 ],[
2309         blkdev_put(NULL, 0);
2310 ],[
2311         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2312                 [blkdev_put needs 2 paramters])
2313         AC_MSG_RESULT([yes])
2314 ],[
2315         AC_MSG_RESULT([no])
2316 ])
2317 ])
2318
2319 # 2.6.29 dentry_open has 4 arguments
2320 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2321 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2322 LB_LINUX_TRY_COMPILE([
2323         #include <linux/fs.h>
2324 ],[
2325         dentry_open(NULL, NULL, 0, NULL);
2326 ],[
2327         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2328                 [dentry_open needs 4 paramters])
2329         AC_MSG_RESULT([yes])
2330 ],[
2331         AC_MSG_RESULT([no])
2332 ])
2333 ])
2334
2335 # 2.6.29 split file and anonymous page queues
2336 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2337 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2338 LB_LINUX_TRY_COMPILE([
2339         #include <linux/mm.h>
2340         #include <linux/pagevec.h>
2341 ],[
2342         struct pagevec lru_pagevec;
2343
2344         pagevec_init(&lru_pagevec, 0);
2345         pagevec_lru_add_file(&lru_pagevec);
2346 ],[
2347         AC_MSG_RESULT([yes])
2348         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2349                 [kernel has .pagevec_lru_add_file])
2350 ],[
2351         AC_MSG_RESULT([no])
2352 ])
2353 ])
2354
2355 #
2356 # --enable-mpitest
2357 #
2358 AC_ARG_ENABLE(mpitests,
2359         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2360                            [include mpi tests]),
2361         [
2362          enable_mpitests=yes
2363          case $enableval in
2364          yes)
2365                 MPICC_WRAPPER=mpicc
2366                 ;;
2367          no)
2368                 enable_mpitests=no
2369                 ;;
2370          *)
2371                 MPICC_WRAPPER=$enableval
2372                  ;;
2373          esac
2374         ],
2375         [
2376         MPICC_WRAPPER=mpicc
2377         enable_mpitests=yes
2378         ]
2379 )
2380
2381 if test x$enable_mpitests != xno; then
2382         AC_MSG_CHECKING([whether mpitests can be built])
2383         oldcc=$CC
2384         CC=$MPICC_WRAPPER
2385         AC_LINK_IFELSE(
2386             [AC_LANG_PROGRAM([[
2387                     #include <mpi.h>
2388                 ]],[[
2389                     int flag;
2390                     MPI_Initialized(&flag);
2391                 ]])],
2392             [
2393                     AC_MSG_RESULT([yes])
2394             ],[
2395                     AC_MSG_RESULT([no])
2396                     enable_mpitests=no
2397         ])
2398         CC=$oldcc
2399 fi
2400 AC_SUBST(MPICC_WRAPPER)
2401
2402 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2403 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2404
2405 LC_CONFIG_PINGER
2406 LC_CONFIG_LIBLUSTRE_RECOVERY
2407 ])
2408
2409 #
2410 # LC_CONFIG_QUOTA
2411 #
2412 # whether to enable quota support global control
2413 #
2414 AC_DEFUN([LC_CONFIG_QUOTA],
2415 [AC_ARG_ENABLE([quota],
2416         AC_HELP_STRING([--enable-quota],
2417                         [enable quota support]),
2418         [],[enable_quota='yes'])
2419 ])
2420
2421 AC_DEFUN([LC_QUOTA],
2422 [#check global
2423 LC_CONFIG_QUOTA
2424 #check for utils
2425 AC_CHECK_HEADER(sys/quota.h,
2426                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2427                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2428 ])
2429
2430 #
2431 # LC_CONFIG_SPLIT
2432 #
2433 # whether to enable split support
2434 #
2435 AC_DEFUN([LC_CONFIG_SPLIT],
2436 [AC_MSG_CHECKING([whether to enable split support])
2437 AC_ARG_ENABLE([split],
2438         AC_HELP_STRING([--enable-split],
2439                         [enable split support]),
2440         [],[enable_split='no'])
2441 AC_MSG_RESULT([$enable_split])
2442 if test x$enable_split != xno; then
2443    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2444 fi
2445 ])
2446
2447 # RHEL5(2.6.18) has tux_info
2448 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2449 [AC_MSG_CHECKING([tux_info])
2450 LB_LINUX_TRY_COMPILE([
2451         #include <linux/sched.h>
2452 ],[
2453         struct task_struct task;
2454         &task.tux_info;
2455 ],[
2456         AC_MSG_RESULT([yes])
2457         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2458         have_task_clenv_store='yes'
2459 ],[
2460         AC_MSG_RESULT([no])
2461 ])
2462 ])
2463
2464 #
2465 # LC_LLITE_LLOOP_MODULE
2466 # lloop_llite.ko does not currently work with page sizes
2467 # of 64k or larger.
2468 #
2469 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2470 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2471 LB_LINUX_TRY_COMPILE([
2472         #include <asm/page.h>
2473 ],[
2474         #if PAGE_SIZE >= 65536
2475         #error "PAGE_SIZE >= 65536"
2476         #endif
2477 ],[
2478         enable_llite_lloop_module='yes'
2479         AC_MSG_RESULT([yes])
2480 ],[
2481         enable_llite_lloop_module='no'
2482         AC_MSG_RESULT([no])
2483 ])
2484 ])
2485
2486 #
2487 # LC_CONFIGURE
2488 #
2489 # other configure checks
2490 #
2491 AC_DEFUN([LC_CONFIGURE],
2492 [LC_CONFIG_OBD_BUFFER_SIZE
2493
2494 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2495         CFLAGS="$CFLAGS -Werror"
2496 fi
2497
2498 # maximum MDS thread count
2499 LC_MDS_MAX_THREADS
2500
2501 # include/liblustre.h
2502 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2503
2504 # liblustre/llite_lib.h
2505 AC_CHECK_HEADERS([xtio.h file.h])
2506
2507 # liblustre/dir.c
2508 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2509
2510 # liblustre/lutil.c
2511 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2512 AC_CHECK_FUNCS([inet_ntoa])
2513
2514 # libsysio/src/readlink.c
2515 LC_READLINK_SSIZE_T
2516
2517 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2518 AC_CHECK_HEADERS([linux/random.h], [], [],
2519                  [#ifdef HAVE_LINUX_TYPES_H
2520                   # include <linux/types.h>
2521                   #endif
2522                  ])
2523
2524 # utils/llverfs.c
2525 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2526
2527 # check for -lz support
2528 ZLIB=""
2529 AC_CHECK_LIB([z],
2530              [adler32],
2531              [AC_CHECK_HEADERS([zlib.h],
2532                                [ZLIB="-lz"
2533                                 AC_DEFINE([HAVE_ADLER], 1,
2534                                           [support alder32 checksum type])],
2535                                [AC_MSG_WARN([No zlib-devel package found,
2536                                              unable to use adler32 checksum])])],
2537              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2538 )
2539 AC_SUBST(ZLIB)
2540
2541 # Super safe df
2542 AC_ARG_ENABLE([mindf],
2543       AC_HELP_STRING([--enable-mindf],
2544                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2545       [],[])
2546 if test "$enable_mindf" = "yes" ;  then
2547       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2548 fi
2549
2550 AC_ARG_ENABLE([fail_alloc],
2551         AC_HELP_STRING([--disable-fail-alloc],
2552                 [disable randomly alloc failure]),
2553         [],[enable_fail_alloc=yes])
2554 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2555 AC_MSG_RESULT([$enable_fail_alloc])
2556 if test x$enable_fail_alloc != xno ; then
2557         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2558 fi
2559
2560 AC_ARG_ENABLE([invariants],
2561         AC_HELP_STRING([--enable-invariants],
2562                 [enable invariant checking (cpu intensive)]),
2563         [],[])
2564 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2565 AC_MSG_RESULT([$enable_invariants])
2566 if test x$enable_invariants = xyes ; then
2567         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2568 fi
2569
2570 AC_ARG_ENABLE([lu_ref],
2571         AC_HELP_STRING([--enable-lu_ref],
2572                 [enable lu_ref reference tracking code]),
2573         [],[])
2574 AC_MSG_CHECKING([whether to track references with lu_ref])
2575 AC_MSG_RESULT([$enable_lu_ref])
2576 if test x$enable_lu_ref = xyes ; then
2577         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2578 fi
2579
2580 AC_ARG_ENABLE([pgstate-track],
2581               AC_HELP_STRING([--enable-pgstate-track],
2582                              [enable page state tracking]),
2583               [enable_pgstat_track='yes'],[])
2584 AC_MSG_CHECKING([whether to enable page state tracking])
2585 AC_MSG_RESULT([$enable_pgstat_track])
2586 if test x$enable_pgstat_track = xyes ; then
2587         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2588                   [enable page state tracking code])
2589 fi
2590
2591          #2.6.29
2592          LC_WRITE_BEGIN_END
2593          LC_D_OBTAIN_ALIAS
2594          LC_BLKDEV_PUT_2ARGS
2595          LC_DENTRY_OPEN_4ARGS
2596          LC_PAGEVEC_LRU_ADD_FILE
2597
2598 ])
2599
2600 #
2601 # LC_CONDITIONALS
2602 #
2603 # AM_CONDITIONALS for lustre
2604 #
2605 AC_DEFUN([LC_CONDITIONALS],
2606 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2607 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2608 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2609 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2610 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2611 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2612 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2613 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2614 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2615 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2616 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2617 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2618 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2619 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2620 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2621 ])
2622
2623 #
2624 # LC_CONFIG_FILES
2625 #
2626 # files that should be generated with AC_OUTPUT
2627 #
2628 AC_DEFUN([LC_CONFIG_FILES],
2629 [AC_CONFIG_FILES([
2630 lustre/Makefile
2631 lustre/autoMakefile
2632 lustre/autoconf/Makefile
2633 lustre/conf/Makefile
2634 lustre/contrib/Makefile
2635 lustre/doc/Makefile
2636 lustre/include/Makefile
2637 lustre/include/lustre_ver.h
2638 lustre/include/linux/Makefile
2639 lustre/include/darwin/Makefile
2640 lustre/include/lustre/Makefile
2641 lustre/kernel_patches/targets/2.6-rhel6.target
2642 lustre/kernel_patches/targets/2.6-rhel5.target
2643 lustre/kernel_patches/targets/2.6-sles10.target
2644 lustre/kernel_patches/targets/2.6-sles11.target
2645 lustre/kernel_patches/targets/2.6-oel5.target
2646 lustre/kernel_patches/targets/2.6-fc11.target
2647 lustre/kernel_patches/targets/2.6-fc12.target
2648 lustre/ldlm/Makefile
2649 lustre/fid/Makefile
2650 lustre/fid/autoMakefile
2651 lustre/liblustre/Makefile
2652 lustre/liblustre/tests/Makefile
2653 lustre/liblustre/tests/mpi/Makefile
2654 lustre/llite/Makefile
2655 lustre/llite/autoMakefile
2656 lustre/lclient/Makefile
2657 lustre/lov/Makefile
2658 lustre/lov/autoMakefile
2659 lustre/lvfs/Makefile
2660 lustre/lvfs/autoMakefile
2661 lustre/mdc/Makefile
2662 lustre/mdc/autoMakefile
2663 lustre/lmv/Makefile
2664 lustre/lmv/autoMakefile
2665 lustre/mds/Makefile
2666 lustre/mds/autoMakefile
2667 lustre/mdt/Makefile
2668 lustre/mdt/autoMakefile
2669 lustre/cmm/Makefile
2670 lustre/cmm/autoMakefile
2671 lustre/mdd/Makefile
2672 lustre/mdd/autoMakefile
2673 lustre/fld/Makefile
2674 lustre/fld/autoMakefile
2675 lustre/obdclass/Makefile
2676 lustre/obdclass/autoMakefile
2677 lustre/obdclass/linux/Makefile
2678 lustre/obdecho/Makefile
2679 lustre/obdecho/autoMakefile
2680 lustre/obdfilter/Makefile
2681 lustre/obdfilter/autoMakefile
2682 lustre/osc/Makefile
2683 lustre/osc/autoMakefile
2684 lustre/ost/Makefile
2685 lustre/ost/autoMakefile
2686 lustre/osd-ldiskfs/Makefile
2687 lustre/osd-ldiskfs/autoMakefile
2688 lustre/mgc/Makefile
2689 lustre/mgc/autoMakefile
2690 lustre/mgs/Makefile
2691 lustre/mgs/autoMakefile
2692 lustre/ptlrpc/Makefile
2693 lustre/ptlrpc/autoMakefile
2694 lustre/ptlrpc/gss/Makefile
2695 lustre/ptlrpc/gss/autoMakefile
2696 lustre/quota/Makefile
2697 lustre/quota/autoMakefile
2698 lustre/scripts/Makefile
2699 lustre/tests/Makefile
2700 lustre/tests/mpi/Makefile
2701 lustre/utils/Makefile
2702 lustre/utils/gss/Makefile
2703 lustre/obdclass/darwin/Makefile
2704 ])
2705 ])