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 # after 2.6.18 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_SEQ_LOCK
 874 # after 2.6.18 seq_file has lock intead of sem
 875 AC_DEFUN([LC_SEQ_LOCK],
 876 [AC_MSG_CHECKING([if struct seq_file has lock field])
 877 LB_LINUX_TRY_COMPILE([
 878         #include <linux/seq_file.h>
 879 ],[
 880         struct seq_file seq;
 881
 882         mutex_unlock(&seq.lock);
 883 ],[
 884         AC_MSG_RESULT(yes)
 885         AC_DEFINE(HAVE_SEQ_LOCK, 1,
 886                 [after 2.6.18 seq_file has lock intead of sem])
 887 ],[
 888         AC_MSG_RESULT(NO)
 889 ])
 890 ])
 891
 892 #
 893 # LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
 894 #
 895 # No standard kernels export this
 896 #
 897 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
 898 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
 899 [mm/filemap.c],[
 900 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
 901             [filemap_fdatawrite_range is exported by the kernel])
 902 ],[
 903 ])
 904 ])
 905
 906 # LC_FLUSH_OWNER_ID
 907 # starting from 2.6.18 the file_operations .flush
 908 # method has a new "fl_owner_t id" parameter
 909 #
 910 AC_DEFUN([LC_FLUSH_OWNER_ID],
 911 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
 912 LB_LINUX_TRY_COMPILE([
 913         #include <linux/fs.h>
 914 ],[
 915         struct file_operations *fops = NULL;
 916         fl_owner_t id;
 917         int i;
 918
 919         i = fops->flush(NULL, id);
 920 ],[
 921         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
 922                 [file_operations .flush method has an fl_owner_t id])
 923         AC_MSG_RESULT([yes])
 924 ],[
 925         AC_MSG_RESULT([no])
 926 ])
 927 ])
 928
 929 #
 930 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
 931 #
 932 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
 933 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
 934 #
 935 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
 936     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
 937          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
 938                         [exported invalidate_mapping_pages])],
 939     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
 940          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
 941                         [exported invalidate_inode_pages])], [
 942        AC_MSG_ERROR([no way to invalidate pages])
 943   ])
 944     ],[])
 945 ])
 946
 947 #2.6.18 + RHEL5 (fc6)
 948
 949 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
 950 AC_DEFUN([LC_PG_FS_MISC],
 951 [AC_MSG_CHECKING([kernel has PG_fs_misc])
 952 LB_LINUX_TRY_COMPILE([
 953         #include <linux/mm.h>
 954         #include <linux/page-flags.h>
 955 ],[
 956         #ifndef PG_fs_misc
 957         #error PG_fs_misc not defined in kernel
 958         #endif
 959 ],[
 960         AC_MSG_RESULT(yes)
 961         AC_DEFINE(HAVE_PG_FS_MISC, 1,
 962                   [is kernel have PG_fs_misc])
 963 ],[
 964         AC_MSG_RESULT(no)
 965 ])
 966 ])
 967
 968 # RHEL5 PageChecked and SetPageChecked defined
 969 AC_DEFUN([LC_PAGE_CHECKED],
 970 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
 971 LB_LINUX_TRY_COMPILE([
 972         #include <linux/mm.h>
 973 #ifdef HAVE_LINUX_MMTYPES_H
 974         #include <linux/mm_types.h>
 975 #endif
 976         #include <linux/page-flags.h>
 977 ],[
 978         struct page *p = NULL;
 979
 980         /* before 2.6.26 this define*/
 981         #ifndef PageChecked
 982         /* 2.6.26 use function instead of define for it */
 983         SetPageChecked(p);
 984         PageChecked(p);
 985         #endif
 986 ],[
 987         AC_MSG_RESULT(yes)
 988         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
 989                   [does kernel have PageChecked and SetPageChecked])
 990 ],[
 991         AC_MSG_RESULT(no)
 992 ])
 993 ])
 994
 995 #
 996 # LC_LINUX_FIEMAP_H
 997 #
 998 # If we have fiemap.h
 999 # after 2.6.27 use fiemap.h in include/linux
1000 #
1001 AC_DEFUN([LC_LINUX_FIEMAP_H],
1002 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1003         AC_MSG_CHECKING([if fiemap.h can be compiled])
1004         LB_LINUX_TRY_COMPILE([
1005                 #include <linux/types.h>
1006                 #include <linux/fiemap.h>
1007         ],[],[
1008                 AC_MSG_RESULT([yes])
1009                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1010         ],[
1011                 AC_MSG_RESULT([no])
1012         ])
1013 ],
1014 [])
1015 ])
1016
1017 # 2.6.19
1018
1019 # 2.6.19 API changes
1020 # inode don't have i_blksize field
1021 AC_DEFUN([LC_INODE_BLKSIZE],
1022 [AC_MSG_CHECKING([inode has i_blksize field])
1023 LB_LINUX_TRY_COMPILE([
1024 #include <linux/fs.h>
1025 ],[
1026         struct inode i;
1027         i.i_blksize = 0;
1028 ],[
1029         AC_MSG_RESULT(yes)
1030         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1031                 [struct inode has i_blksize field])
1032 ],[
1033         AC_MSG_RESULT(no)
1034 ])
1035 ])
1036
1037 # LC_FILE_WRITEV
1038 # 2.6.19 replaced writev with aio_write
1039 AC_DEFUN([LC_FILE_WRITEV],
1040 [AC_MSG_CHECKING([writev in fops])
1041 LB_LINUX_TRY_COMPILE([
1042         #include <linux/fs.h>
1043 ],[
1044         struct file_operations *fops = NULL;
1045         fops->writev = NULL;
1046 ],[
1047         AC_MSG_RESULT(yes)
1048         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1049                 [use fops->writev])
1050 ],[
1051         AC_MSG_RESULT(no)
1052 ])
1053 ])
1054
1055 # LC_FILE_READV
1056 # 2.6.19 replaced readv with aio_read
1057 AC_DEFUN([LC_FILE_READV],
1058 [AC_MSG_CHECKING([readv in fops])
1059 LB_LINUX_TRY_COMPILE([
1060         #include <linux/fs.h>
1061 ],[
1062         struct file_operations *fops = NULL;
1063         fops->readv = NULL;
1064 ],[
1065         AC_MSG_RESULT(yes)
1066         AC_DEFINE(HAVE_FILE_READV, 1,
1067                 [use fops->readv])
1068 ],[
1069         AC_MSG_RESULT(no)
1070 ])
1071 ])
1072
1073 # 2.6.20
1074
1075 # LC_CANCEL_DIRTY_PAGE
1076 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
1077 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1078         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1079         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
1080         # backport is broken, so ignore it
1081         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
1082            test "$(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
1083                 AC_MSG_RESULT(no)
1084         else
1085                 LB_LINUX_TRY_COMPILE([
1086                         #include <linux/mm.h>
1087                         #include <linux/page-flags.h>
1088 ],[
1089                         cancel_dirty_page(NULL, 0);
1090 ],[
1091                         AC_MSG_RESULT(yes)
1092                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1093                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1094 ],[
1095                         AC_MSG_RESULT(no)
1096 ])
1097         fi
1098 ])
1099
1100 # raid5-zerocopy patch
1101
1102 #
1103 # LC_PAGE_CONSTANT
1104 #
1105 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1106 # it support constant page, which means the page won't be modified during the
1107 # IO.
1108 #
1109 AC_DEFUN([LC_PAGE_CONSTANT],
1110 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1111 LB_LINUX_TRY_COMPILE([
1112         #include <linux/mm.h>
1113         #include <linux/page-flags.h>
1114 ],[
1115         #ifndef PG_constant
1116         #error "Have no raid5 zcopy patch"
1117         #endif
1118 ],[
1119         AC_MSG_RESULT(yes)
1120         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1121 ],[
1122         AC_MSG_RESULT(no);
1123 ])
1124 ])
1125
1126 # 2.6.22
1127
1128 # 2.6.22 lost second parameter for invalidate_bdev
1129 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1130 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1131 LB_LINUX_TRY_COMPILE([
1132         #include <linux/buffer_head.h>
1133 ],[
1134         invalidate_bdev(NULL,0);
1135 ],[
1136         AC_MSG_RESULT([yes])
1137         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1138                 [invalidate_bdev has second argument])
1139 ],[
1140         AC_MSG_RESULT([no])
1141 ])
1142 ])
1143
1144 #
1145 # check for crypto API
1146 #
1147 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1148 [AC_MSG_CHECKING([if kernel has block cipher support])
1149 LB_LINUX_TRY_COMPILE([
1150         #include <linux/err.h>
1151         #include <linux/crypto.h>
1152 ],[
1153         struct crypto_blkcipher *tfm;
1154         tfm = crypto_alloc_blkcipher("aes", 0, sizeof(tfm) );
1155 ],[
1156         AC_MSG_RESULT([yes])
1157         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1158 ],[
1159         AC_MSG_RESULT([no])
1160 ])
1161 ])
1162
1163 #
1164 # check for struct hash_desc
1165 #
1166 AC_DEFUN([LC_STRUCT_HASH_DESC],
1167 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1168 LB_LINUX_TRY_COMPILE([
1169         #include <linux/err.h>
1170         #include <linux/crypto.h>
1171 ],[
1172         struct hash_desc foo;
1173 ],[
1174         AC_MSG_RESULT([yes])
1175         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1176 ],[
1177         AC_MSG_RESULT([no])
1178 ])
1179 ])
1180
1181 #
1182 # check for struct blkcipher_desc
1183 #
1184 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1185 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1186 LB_LINUX_TRY_COMPILE([
1187         #include <linux/err.h>
1188         #include <linux/crypto.h>
1189 ],[
1190         struct blkcipher_desc foo;
1191 ],[
1192         AC_MSG_RESULT([yes])
1193         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1194 ],[
1195         AC_MSG_RESULT([no])
1196 ])
1197 ])
1198
1199 #
1200 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1201 #
1202 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1203 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1204 LB_LINUX_TRY_COMPILE([
1205         #include <linux/fs.h>
1206 ],[
1207         int v = FS_RENAME_DOES_D_MOVE;
1208 ],[
1209         AC_MSG_RESULT([yes])
1210         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1211 ],[
1212         AC_MSG_RESULT([no])
1213 ])
1214 ])
1215
1216 # 2.6.23
1217
1218 # 2.6.23 have return type 'void' for unregister_blkdev
1219 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1220 [AC_MSG_CHECKING([if unregister_blkdev return int])
1221 LB_LINUX_TRY_COMPILE([
1222         #include <linux/fs.h>
1223 ],[
1224         int i = unregister_blkdev(0,NULL);
1225 ],[
1226         AC_MSG_RESULT([yes])
1227         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1228                 [unregister_blkdev return int])
1229 ],[
1230         AC_MSG_RESULT([no])
1231 ])
1232 ])
1233
1234 # 2.6.23 change .sendfile to .splice_read
1235 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1236 [AC_MSG_CHECKING([if kernel has .splice_read])
1237 LB_LINUX_TRY_COMPILE([
1238         #include <linux/fs.h>
1239 ],[
1240         struct file_operations file;
1241
1242         file.splice_read = NULL;
1243 ], [
1244         AC_MSG_RESULT([yes])
1245         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1246                 [kernel has .slice_read])
1247 ],[
1248         AC_MSG_RESULT([no])
1249 ])
1250 ])
1251
1252 # 2.6.23 change .sendfile to .splice_read
1253 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1254 AC_DEFUN([LC_KERNEL_SENDFILE],
1255 [AC_MSG_CHECKING([if kernel has .sendfile])
1256 LB_LINUX_TRY_COMPILE([
1257         #include <linux/fs.h>
1258 ],[
1259         struct file_operations file;
1260
1261         file.sendfile = NULL;
1262 ], [
1263         AC_MSG_RESULT([yes])
1264         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1265                 [kernel has .sendfile])
1266 ],[
1267         AC_MSG_RESULT([no])
1268 ])
1269 ])
1270
1271 # 2.6.23 extract nfs export related data into exportfs.h
1272 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1273 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1274         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1275                 [kernel has include/exportfs.h])
1276 ],[
1277         AC_MSG_RESULT([no])
1278 ])
1279 ])
1280
1281 # 2.6.23 has new page fault handling API
1282 AC_DEFUN([LC_VM_OP_FAULT],
1283 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1284 LB_LINUX_TRY_COMPILE([
1285         #include <linux/mm.h>
1286 ],[
1287         struct vm_operations_struct op;
1288
1289         op.fault = NULL;
1290 ], [
1291         AC_MSG_RESULT([yes])
1292         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1293                 [kernel has .fault in vm_operation_struct])
1294 ],[
1295         AC_MSG_RESULT([no])
1296 ])
1297 ])
1298
1299 # 2.6.23 add code to wait other users to complete before removing procfs entry
1300 AC_DEFUN([LC_PROCFS_USERS],
1301 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1302 LB_LINUX_TRY_COMPILE([
1303         #include <linux/proc_fs.h>
1304 ],[
1305         struct proc_dir_entry pde;
1306
1307         pde.pde_users   = 0;
1308 ],[
1309         AC_MSG_RESULT([yes])
1310         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1311                 [kernel has pde_users member in procfs entry struct])
1312 ],[
1313         AC_MSG_RESULT([no])
1314 ])
1315 ])
1316
1317 # 2.6.23 exports exportfs_decode_fh
1318 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1319 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1320 [fs/exportfs/expfs.c],[
1321         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1322                 [exportfs_decode_fh has been export])
1323 ],[
1324 ])
1325 ])
1326
1327 # 2.6.24
1328
1329 # 2.6.24 need linux/mm_types.h included
1330 AC_DEFUN([LC_HAVE_MMTYPES_H],
1331 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1332         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1333                 [kernel has include/mm_types.h])
1334 ],[
1335         AC_MSG_RESULT([no])
1336 ])
1337 ])
1338
1339 # 2.6.24 has bio_endio with 2 args
1340 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1341 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1342 LB_LINUX_TRY_COMPILE([
1343         #include <linux/bio.h>
1344 ],[
1345         bio_endio(NULL, 0);
1346 ], [
1347         AC_MSG_RESULT([yes])
1348         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1349                 [kernel has bio_endio with 2 args])
1350 ],[
1351         AC_MSG_RESULT([no])
1352 ])
1353 ])
1354
1355 # 2.6.24 has new members in exports struct.
1356 AC_DEFUN([LC_FH_TO_DENTRY],
1357 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1358 LB_LINUX_TRY_COMPILE([
1359         #include <linux/fs.h>
1360 #ifdef HAVE_LINUX_EXPORTFS_H
1361         #include <linux/exportfs.h>
1362 #endif
1363 ],[
1364         do{ }while(sizeof(((struct export_operations *)0)->fh_to_dentry));
1365 ], [
1366         AC_MSG_RESULT([yes])
1367         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1368                 [kernel has .fh_to_dentry member in export_operations struct])
1369 ],[
1370         AC_MSG_RESULT([no])
1371 ])
1372 ])
1373
1374 # 2.6.24 removes long aged procfs entry -> deleted member
1375 AC_DEFUN([LC_PROCFS_DELETED],
1376 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1377 LB_LINUX_TRY_COMPILE([
1378         #include <linux/proc_fs.h>
1379 ],[
1380         struct proc_dir_entry pde;
1381
1382         pde.deleted = sizeof(pde);
1383 ], [
1384         AC_MSG_RESULT([yes])
1385         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1386                 [kernel has deleted member in procfs entry struct])
1387 ],[
1388         AC_MSG_RESULT([no])
1389 ])
1390 ])
1391
1392 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1393 AC_DEFUN([LC_EXPORT_BDI_INIT],
1394 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1395 [mm/backing-dev.c],[
1396         AC_DEFINE(HAVE_BDI_INIT, 1,
1397                 [bdi_init/bdi_destroy functions are present])
1398 ],[
1399 ])
1400 ])
1401
1402 # 2.6.26
1403
1404 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1405 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1406 [AC_MSG_CHECKING([fs_struct use path structure])
1407 LB_LINUX_TRY_COMPILE([
1408         #include <asm/atomic.h>
1409         #include <linux/spinlock.h>
1410         #include <linux/fs_struct.h>
1411 ],[
1412         struct fs_struct fs;
1413
1414         fs.pwd = *((struct path *)sizeof(fs));
1415 ], [
1416         AC_MSG_RESULT([yes])
1417         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1418                 [fs_struct use path structure])
1419 ],[
1420         AC_MSG_RESULT([no])
1421 ])
1422 ])
1423
1424
1425 #
1426 # 2.6.27
1427 #
1428 AC_DEFUN([LC_PGMKWRITE_USE_VMFAULT],
1429 [AC_MSG_CHECKING([kernel .page_mkwrite uses struct vm_fault *])
1430 tmp_flags="$EXTRA_KCFLAGS"
1431 EXTRA_KCFLAGS="-Werror"
1432 LB_LINUX_TRY_COMPILE([
1433         #include <linux/mm.h>
1434 ],[
1435         ((struct vm_operations_struct *)0)->page_mkwrite((struct vm_area_struct *)0, (struct vm_fault *)0);
1436 ], [
1437         AC_MSG_RESULT([yes])
1438         AC_DEFINE(HAVE_PGMKWRITE_USE_VMFAULT, 1,
1439                 [kernel vm_operation_struct.page_mkwrite uses struct vm_fault * as second parameter])
1440 ],[
1441         AC_MSG_RESULT([no])
1442 ])
1443 EXTRA_KCFLAGS="$tmp_flags"
1444 ])
1445
1446 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1447 [AC_MSG_CHECKING([inode_operations->permission has two args])
1448 LB_LINUX_TRY_COMPILE([
1449         #include <linux/fs.h>
1450 ],[
1451         struct inode *inode;
1452         inode->i_op->permission(NULL, 0);
1453 ],[
1454         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
1455                   [inode_operations->permission has two args])
1456         AC_MSG_RESULT([yes])
1457 ],[
1458         AC_MSG_RESULT([no])
1459 ])
1460 ])
1461
1462 # 2.6.27 has file_remove_suid instead of remove_suid
1463 AC_DEFUN([LC_FILE_REMOVE_SUID],
1464 [AC_MSG_CHECKING([kernel has file_remove_suid])
1465 LB_LINUX_TRY_COMPILE([
1466         #include <linux/fs.h>
1467 ],[
1468         file_remove_suid(NULL);
1469 ],[
1470         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1471                   [kernel have file_remove_suid])
1472         AC_MSG_RESULT([yes])
1473 ],[
1474         AC_MSG_RESULT([no])
1475 ])
1476 ])
1477
1478 # 2.6.27 have new page locking API
1479 AC_DEFUN([LC_TRYLOCKPAGE],
1480 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1481 LB_LINUX_TRY_COMPILE([
1482         #include <linux/pagemap.h>
1483 ],[
1484         trylock_page(NULL);
1485 ],[
1486         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1487                   [kernel uses trylock_page for page lock])
1488         AC_MSG_RESULT([yes])
1489 ],[
1490         AC_MSG_RESULT([no])
1491 ])
1492 ])
1493
1494 # 2.6.27 removed the read_inode from super_operations.
1495 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1496 [AC_MSG_CHECKING([super_operations has a read_inode field])
1497 LB_LINUX_TRY_COMPILE([
1498         #include <linux/fs.h>
1499 ],[
1500         struct super_operations *sop;
1501         sop->read_inode(NULL);
1502 ],[
1503         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1504                 [super_operations has a read_inode])
1505         AC_MSG_RESULT([yes])
1506 ],[
1507         AC_MSG_RESULT([no])
1508 ])
1509 ])
1510
1511 # 2.6.27 has inode_permission instead of permisson
1512 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1513 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1514 [fs/namei.c],[
1515 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1516             [inode_permission is exported by the kernel])
1517 ],[
1518 ])
1519 ])
1520
1521 # 2.6.27 use 5th parameter in quota_on for remount.
1522 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1523 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1524 LB_LINUX_TRY_COMPILE([
1525         #include <linux/quota.h>
1526 ],[
1527         struct quotactl_ops *qop;
1528         qop->quota_on(NULL, 0, 0, NULL, 0);
1529 ],[
1530         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1531                 [quota_on needs 5 paramters])
1532         AC_MSG_RESULT([yes])
1533 ],[
1534         AC_MSG_RESULT([no])
1535 ])
1536 ])
1537
1538 # 2.6.27 use 3th parameter in quota_off for remount.
1539 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1540 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1541 LB_LINUX_TRY_COMPILE([
1542         #include <linux/quota.h>
1543 ],[
1544         struct quotactl_ops *qop;
1545         qop->quota_off(NULL, 0, 0);
1546 ],[
1547         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1548                 [quota_off needs 3 paramters])
1549         AC_MSG_RESULT([yes])
1550 ],[
1551         AC_MSG_RESULT([no])
1552 ])
1553 ])
1554
1555 # 2.6.27 has vfs_dq_off inline function.
1556 AC_DEFUN([LC_VFS_DQ_OFF],
1557 [AC_MSG_CHECKING([vfs_dq_off is defined])
1558 LB_LINUX_TRY_COMPILE([
1559         #include <linux/quotaops.h>
1560 ],[
1561         vfs_dq_off(NULL, 0);
1562 ],[
1563         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1564         AC_MSG_RESULT([yes])
1565 ],[
1566         AC_MSG_RESULT([no])
1567 ])
1568 ])
1569
1570 # LC_LOCK_MAP_ACQUIRE
1571 # after 2.6.27 lock_map_acquire replaces lock_acquire
1572 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1573 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1574 LB_LINUX_TRY_COMPILE([
1575         #include <linux/lockdep.h>
1576 ],[
1577         lock_map_acquire(NULL);
1578 ],[
1579         AC_MSG_RESULT(yes)
1580         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1581                 [lock_map_acquire is defined])
1582 ],[
1583         AC_MSG_RESULT(no)
1584 ])
1585 ])
1586
1587 # 2.6.27.15-2 sles11
1588
1589 # 2.6.27 sles11 remove the bi_hw_segments
1590 AC_DEFUN([LC_BI_HW_SEGMENTS],
1591 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1592 LB_LINUX_TRY_COMPILE([
1593         #include <linux/bio.h>
1594 ],[
1595         struct bio io;
1596         io.bi_hw_segments = sizeof(io);
1597 ],[
1598         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1599                 [struct bio has a bi_hw_segments field])
1600         AC_MSG_RESULT([yes])
1601 ],[
1602         AC_MSG_RESULT([no])
1603 ])
1604 ])
1605
1606 #
1607 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1608 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1609 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1610 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1611         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1612                 [kernel has include/linux/quotaio_v2.h])
1613 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1614                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1615                 [kernel has fs/quotaio_v1.h])
1616 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1617                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1618                 [kernel has fs/quota/quotaio_v2.h])
1619 ],[
1620         AC_MSG_RESULT([no])
1621 ])
1622 ])
1623 ])
1624 ])
1625
1626 # 2.6.27 sles11 has sb_any_quota_active
1627 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1628 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1629 LB_LINUX_TRY_COMPILE([
1630         #include <linux/quotaops.h>
1631 ],[
1632         sb_any_quota_active(NULL);
1633 ],[
1634         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1635                 [Kernel has a sb_any_quota_active])
1636         AC_MSG_RESULT([yes])
1637 ],[
1638         AC_MSG_RESULT([no])
1639 ])
1640 ])
1641
1642 # 2.6.27 sles11 has sb_has_quota_active
1643 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1644 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1645 LB_LINUX_TRY_COMPILE([
1646         #include <linux/quotaops.h>
1647 ],[
1648         sb_has_quota_active(NULL, 0);
1649 ],[
1650         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1651                 [Kernel has a sb_has_quota_active])
1652         AC_MSG_RESULT([yes])
1653 ],[
1654         AC_MSG_RESULT([no])
1655 ])
1656 ])
1657
1658 # 2.6.27 exported add_to_page_cache_lru.
1659 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1660 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1661 [mm/filemap.c],[
1662         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1663                 [add_to_page_cache_lru functions are present])
1664 ],[
1665 ])
1666 ])
1667
1668 #
1669 # 2.6.29 introduce sb_any_quota_loaded.
1670 #
1671 AC_DEFUN([LC_SB_ANY_QUOTA_LOADED],
1672 [AC_MSG_CHECKING([Kernel has sb_any_quota_loaded])
1673 LB_LINUX_TRY_COMPILE([
1674         #include <linux/quotaops.h>
1675 ],[
1676         sb_any_quota_loaded(NULL);
1677 ],[
1678         AC_DEFINE(HAVE_SB_ANY_QUOTA_LOADED, 1,
1679                 [Kernel has a sb_any_quota_loaded])
1680         AC_MSG_RESULT([yes])
1681 ],[
1682         AC_MSG_RESULT([no])
1683 ])
1684 ])
1685
1686 # 2.6.30 x86 node_to_cpumask has been removed. must use cpumask_of_node
1687 AC_DEFUN([LC_EXPORT_CPUMASK_OF_NODE],
1688          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask_map],
1689                                  [arch/$LINUX_ARCH/mm/numa.c],
1690                                  [AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1,
1691                                             [node_to_cpumask_map is exported by
1692                                              the kernel])]) # x86_64
1693          ])
1694
1695 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1696 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1697 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1698 LB_LINUX_TRY_COMPILE([
1699         #include <linux/blkdev.h>
1700 ],[
1701         blk_queue_logical_block_size(NULL, 0);
1702 ],[
1703         AC_MSG_RESULT(yes)
1704         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1705                   [blk_queue_logical_block_size is defined])
1706 ],[
1707         AC_MSG_RESULT(no)
1708 ])
1709 ])
1710
1711 # 2.6.32
1712
1713 # 2.6.32 changes cache_detail's member cache_request to cache_upcall
1714 # in kernel commit bc74b4f5e63a09fb78e245794a0de1e5a2716bbe
1715 AC_DEFUN([LC_CACHE_UPCALL],
1716 [AC_MSG_CHECKING([if cache_detail has cache_upcall field])
1717         LB_LINUX_TRY_COMPILE([
1718                 #include <linux/sunrpc/cache.h>
1719         ],[
1720                 struct cache_detail cd;
1721                 cd.cache_upcall = NULL;
1722         ],[
1723                 AC_MSG_RESULT(yes)
1724                 AC_DEFINE(HAVE_CACHE_UPCALL, 1,
1725                           [cache_detail has cache_upcall field])
1726         ],[
1727                 AC_MSG_RESULT(no)
1728         ])
1729 ])
1730
1731 # 2.6.32 add a limits member in struct request_queue.
1732 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1733 [AC_MSG_CHECKING([if request_queue has a limits field])
1734 LB_LINUX_TRY_COMPILE([
1735         #include <linux/blkdev.h>
1736 ],[
1737         struct request_queue rq;
1738         rq.limits.io_min = 0;
1739 ],[
1740         AC_MSG_RESULT(yes)
1741         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1742                   [request_queue has a limits field])
1743 ],[
1744         AC_MSG_RESULT(no)
1745 ])
1746 ])
1747
1748 # 2.6.32 has bdi_register() functions.
1749 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1750 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1751 [mm/backing-dev.c],[
1752         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1753                 [bdi_register function is present])
1754 ],[
1755 ])
1756 ])
1757
1758 # 2.6.32 add s_bdi for super block
1759 AC_DEFUN([LC_SB_BDI],
1760 [AC_MSG_CHECKING([if super_block has s_bdi field])
1761 LB_LINUX_TRY_COMPILE([
1762         #include <linux/fs.h>
1763 ],[
1764         struct super_block sb;
1765         sb.s_bdi = NULL;
1766 ],[
1767         AC_MSG_RESULT(yes)
1768         AC_DEFINE(HAVE_SB_BDI, 1,
1769                   [super_block has s_bdi field])
1770 ],[
1771         AC_MSG_RESULT(no)
1772 ])
1773 ])
1774
1775 #  2.6.27.15-2 SuSE 11 sp0 kernels lack the name field for BDI
1776 AC_DEFUN([LC_BDI_NAME],
1777 [AC_MSG_CHECKING([if backing_device_info has name field])
1778 LB_LINUX_TRY_COMPILE([
1779         #include <linux/blkkdev.h>
1780 ],[
1781         struct backing_dev_info bdi;
1782         bdi.name = NULL;
1783 ],[
1784         AC_MSG_RESULT(yes)
1785         AC_DEFINE(HAVE_BDI_NAME, 1,
1786                   [backing_device_info has name field])
1787 ],[
1788         AC_MSG_RESULT(no)
1789 ])
1790 ])
1791
1792 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1793 # check blk_queue_max_sectors and use it until disappear.
1794 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
1795 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
1796 LB_LINUX_TRY_COMPILE([
1797         #include <linux/blkdev.h>
1798 ],[
1799         blk_queue_max_sectors(NULL, 0);
1800 ],[
1801         AC_MSG_RESULT(yes)
1802         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
1803                   [blk_queue_max_sectors is defined])
1804 ],[
1805         AC_MSG_RESULT(no)
1806 ])
1807 ])
1808
1809 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
1810 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
1811 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
1812 LB_LINUX_TRY_COMPILE([
1813         #include <linux/blkdev.h>
1814 ],[
1815         blk_queue_max_segments(NULL, 0);
1816 ],[
1817         AC_MSG_RESULT(yes)
1818         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
1819                   [blk_queue_max_segments is defined])
1820 ],[
1821         AC_MSG_RESULT(no)
1822 ])
1823 ])
1824
1825 #
1826 # LC_QUOTA64
1827 #
1828 # Check if kernel has been patched for 64-bit quota limits support.
1829 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
1830 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
1831 # that in the absence of quotaio_v1.h in the kernel headers.
1832 #
1833 AC_DEFUN([LC_QUOTA64],[
1834         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
1835 tmp_flags="$EXTRA_KCFLAGS"
1836 EXTRA_KCFLAGS="-I$LINUX/fs"
1837         LB_LINUX_TRY_COMPILE([
1838                 #include <linux/kernel.h>
1839                 #include <linux/fs.h>
1840                 #ifdef HAVE_QUOTAIO_H
1841                 # include <linux/quotaio_v2.h>
1842                 int versions[] = V2_INITQVERSIONS_R1;
1843                 struct v2_disk_dqblk_r1 dqblk_r1;
1844                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
1845                 # include <quota/quotaio_v2.h>
1846                 struct v2r1_disk_dqblk dqblk_r1;
1847                 #elif defined(HAVE_FS_QUOTAIO_H)
1848                 # include <quotaio_v2.h>
1849                 struct v2r1_disk_dqblk dqblk_r1;
1850                 #else
1851                 #include <linux/quota.h>
1852                 int ver = QFMT_VFS_V1;
1853                 #endif
1854         ],[],[
1855                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
1856                 AC_MSG_RESULT([yes])
1857         ],[
1858                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
1859                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
1860                 ],[])
1861                 AC_MSG_RESULT([no])
1862         ])
1863 EXTRA_KCFLAGS=$tmp_flags
1864 ])
1865
1866 # 2.6.32 set_cpus_allowed is no more defined if CONFIG_CPUMASK_OFFSTACK=yes
1867 AC_DEFUN([LC_SET_CPUS_ALLOWED],
1868          [AC_MSG_CHECKING([if kernel defines set_cpus_allowed])
1869           LB_LINUX_TRY_COMPILE(
1870                 [#include <linux/sched.h>],
1871                 [struct task_struct *p = NULL;
1872                  cpumask_t mask = { { 0 } };
1873                  (void) set_cpus_allowed(p, mask);],
1874                 [AC_MSG_RESULT([yes])
1875                  AC_DEFINE(HAVE_SET_CPUS_ALLOWED, 1,
1876                            [set_cpus_allowed is exported by the kernel])],
1877                 [AC_MSG_RESULT([no])] )])
1878
1879 #
1880 # LC_D_OBTAIN_ALIAS
1881 # starting from 2.6.28 kernel replaces d_alloc_anon() with
1882 # d_obtain_alias() for getting anonymous dentries
1883 # RHEL5(2.6.18) has d_obtain_alias but SLES11SP0(2.6.27) not
1884 #
1885 AC_DEFUN([LC_D_OBTAIN_ALIAS],
1886 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
1887 LB_LINUX_TRY_COMPILE([
1888         #include <linux/dcache.h>
1889 ],[
1890         d_obtain_alias(NULL);
1891 ],[
1892         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
1893                 [d_obtain_alias exist in kernel])
1894         AC_MSG_RESULT([yes])
1895 ],[
1896         AC_MSG_RESULT([no])
1897 ])
1898 ])
1899
1900 #
1901 # LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
1902 #
1903 AC_DEFUN([LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE],
1904          [LB_CHECK_SYMBOL_EXPORT(
1905                         [generic_error_remove_page],
1906                         [mm/truncate.c],
1907                         [AC_DEFINE(HAS_GENERIC_ERROR_REMOVE_PAGE, 1,
1908                                 [kernel export generic_error_remove_page])],
1909                         [])
1910          ]
1911 )
1912
1913 #
1914 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
1915 #
1916 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
1917 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
1918 LB_LINUX_TRY_COMPILE([
1919         #include <asm/atomic.h>
1920         #include <linux/spinlock.h>
1921         #include <linux/fs_struct.h>
1922 ],[
1923         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
1924 ],[
1925         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
1926                   [fs_struct.lock use rwlock])
1927         AC_MSG_RESULT([yes])
1928 ],[
1929         AC_MSG_RESULT([no])
1930 ])
1931 ])
1932
1933 #
1934 # 2.6.36 super_operations add evict_inode method. it hybird of
1935 # delete_inode & clear_inode.
1936 #
1937 AC_DEFUN([LC_SBOPS_EVICT_INODE],
1938 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
1939 LB_LINUX_TRY_COMPILE([
1940         #include <linux/fs.h>
1941 ],[
1942         ((struct super_operations *)0)->evict_inode(NULL);
1943 ],[
1944         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
1945                 [super_operations.evict_inode() is exist in kernel])
1946         AC_MSG_RESULT([yes])
1947 ],[
1948         AC_MSG_RESULT([no])
1949 ])
1950 ])
1951
1952 #
1953 # 2.6.35 file_operations.fsync taken 2 arguments.
1954 # 3.0.0 file_operations.fsync takes 4 arguments.
1955 #
1956 AC_DEFUN([LC_FILE_FSYNC],
1957 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
1958 LB_LINUX_TRY_COMPILE([
1959         #include <linux/fs.h>
1960 ],[
1961         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
1962 ],[
1963         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
1964                 [file_operations.fsync takes 4 arguments])
1965         AC_MSG_RESULT([yes, 4 args])
1966 ],[
1967         LB_LINUX_TRY_COMPILE([
1968                 #include <linux/fs.h>
1969         ],[
1970            ((struct file_operations *)0)->fsync(NULL, 0);
1971         ],[
1972                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
1973                         [file_operations.fsync takes 2 arguments])
1974                 AC_MSG_RESULT([yes, 2 args])
1975         ],[
1976                 AC_MSG_RESULT([no])
1977         ])
1978 ])
1979 ])
1980
1981 #
1982 # 2.6.38 export blkdev_get_by_dev
1983 #
1984 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
1985 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
1986 [fs/block_dev.c],[
1987 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
1988             [blkdev_get_by_dev is exported by the kernel])
1989 ],[
1990 ])
1991 ])
1992
1993 #
1994 # 2.6.38 vfsmount.mnt_count doesn't use atomic_t
1995 #
1996 AC_DEFUN([LC_ATOMIC_MNT_COUNT],
1997 [AC_MSG_CHECKING([if vfsmount.mnt_count is atomic_t])
1998 LB_LINUX_TRY_COMPILE([
1999         #include <asm/atomic.h>
2000         #include <linux/fs.h>
2001         #include <linux/mount.h>
2002 ],[
2003         ((struct vfsmount *)0)->mnt_count = ((atomic_t) { 0 });
2004 ],[
2005         AC_DEFINE(HAVE_ATOMIC_MNT_COUNT, 1,
2006                 [vfsmount.mnt_count is atomic_t])
2007         AC_MSG_RESULT([yes])
2008 ],[
2009         AC_MSG_RESULT([no])
2010 ])
2011 ])
2012
2013 #
2014 # 2.6.38 use path as 4th parameter in quota_on.
2015 #
2016 AC_DEFUN([LC_QUOTA_ON_USE_PATH],
2017 [AC_MSG_CHECKING([quota_on use path as parameter])
2018 tmp_flags="$EXTRA_KCFLAGS"
2019 EXTRA_KCFLAGS="-Werror"
2020 LB_LINUX_TRY_COMPILE([
2021         #include <linux/fs.h>
2022         #include <linux/quota.h>
2023 ],[
2024         ((struct quotactl_ops *)0)->quota_on(NULL, 0, 0, ((struct path*)0));
2025 ],[
2026         AC_DEFINE(HAVE_QUOTA_ON_USE_PATH, 1,
2027                 [quota_on use path as 4th paramter])
2028         AC_MSG_RESULT([yes])
2029 ],[
2030         AC_MSG_RESULT([no])
2031 ])
2032 EXTRA_KCFLAGS="$tmp_flags"
2033 ])
2034
2035 #
2036 # 2.6.39 remove unplug_fn from request_queue.
2037 #
2038 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
2039 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
2040 LB_LINUX_TRY_COMPILE([
2041         #include <linux/blkdev.h>
2042 ],[
2043         do{ }while(sizeof(((struct request_queue *)0)->unplug_fn));
2044 ],[
2045         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
2046                   [request_queue has unplug_fn field])
2047         AC_MSG_RESULT([yes])
2048 ],[
2049         AC_MSG_RESULT([no])
2050 ])
2051 ])
2052
2053 #
2054 # 2.6.38 generic_permission taken 4 paremater.
2055 # in fact, it means rcu-walk aware permission bring.
2056 #
2057 AC_DEFUN([LC_GENERIC_PERMISSION],
2058 [AC_MSG_CHECKING([if generic_permission take 4 arguments])
2059 LB_LINUX_TRY_COMPILE([
2060         #include <linux/fs.h>
2061 ],[
2062         generic_permission(NULL, 0, 0, NULL);
2063 ],[
2064         AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
2065                   [generic_permission taken 4 arguments])
2066         AC_MSG_RESULT([yes])
2067 ],[
2068         AC_MSG_RESULT([no])
2069 ])
2070 ])
2071
2072 #
2073 # 2.6.38 export simple_setattr
2074 #
2075 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
2076 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
2077 [fs/libfs.c],[
2078 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
2079             [simple_setattr is exported by the kernel])
2080 ],[
2081 ])
2082 ])
2083
2084 #
2085 # LC_PROG_LINUX
2086 #
2087 # Lustre linux kernel checks
2088 #
2089 AC_DEFUN([LC_PROG_LINUX],
2090          [LC_LUSTRE_VERSION_H
2091          LC_CONFIG_PINGER
2092          LC_CONFIG_CHECKSUM
2093          LC_CONFIG_LIBLUSTRE_RECOVERY
2094          LC_CONFIG_HEALTH_CHECK_WRITE
2095          LC_CONFIG_LRU_RESIZE
2096          LC_QUOTA_MODULE
2097          LC_LLITE_LLOOP_MODULE
2098
2099          # RHEL4 patches
2100          LC_EXPORT_TRUNCATE_COMPLETE
2101          LC_EXPORT_D_REHASH_COND
2102          LC_EXPORT___D_REHASH
2103          LC_EXPORT_NODE_TO_CPUMASK
2104
2105          LC_FILEMAP_POPULATE
2106          LC_BIT_SPINLOCK_H
2107
2108          LC_CONST_ACL_SIZE
2109
2110          LC_STRUCT_INTENT_FILE
2111
2112          LC_CAPA_CRYPTO
2113          LC_CONFIG_RMTCLIENT
2114          LC_CONFIG_GSS
2115          LC_FUNC_HAVE_CAN_SLEEP_ARG
2116          LC_FUNC_F_OP_FLOCK
2117          LC_QUOTA_READ
2118          LC_COOKIE_FOLLOW_LINK
2119          LC_FUNC_RCU
2120          LC_PERCPU_COUNTER
2121          LC_TASK_CLENV_STORE
2122
2123          # ~2.6.11
2124          LC_S_TIME_GRAN
2125          LC_SB_TIME_GRAN
2126
2127          # 2.6.12
2128          LC_RW_TREE_LOCK
2129
2130          # 2.6.15
2131          LC_INODE_I_MUTEX
2132
2133          # 2.6.16
2134          LC_SECURITY_PLUG  # for SLES10 SP2
2135
2136          # 2.6.17
2137          LC_INODE_IPRIVATE
2138          LC_DQUOTOFF_MUTEX
2139
2140          # 2.6.18
2141          LC_NR_PAGECACHE
2142          LC_STATFS_DENTRY_PARAM
2143          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2144          LC_SEQ_LOCK
2145          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
2146          LC_FLUSH_OWNER_ID
2147          if test x$enable_server = xyes ; then
2148                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2149          fi
2150
2151          #2.6.18 + RHEL5 (fc6)
2152          LC_PG_FS_MISC
2153          LC_PAGE_CHECKED
2154          LC_LINUX_FIEMAP_H
2155
2156          # 2.6.19
2157          LC_INODE_BLKSIZE
2158          LC_FILE_WRITEV
2159          LC_FILE_READV
2160
2161          # 2.6.20
2162          LC_CANCEL_DIRTY_PAGE
2163
2164          # raid5-zerocopy patch
2165          LC_PAGE_CONSTANT
2166
2167          # 2.6.22
2168          LC_INVALIDATE_BDEV_2ARG
2169          LC_ASYNC_BLOCK_CIPHER
2170          LC_STRUCT_HASH_DESC
2171          LC_STRUCT_BLKCIPHER_DESC
2172          LC_FS_RENAME_DOES_D_MOVE
2173
2174          # 2.6.23
2175          LC_UNREGISTER_BLKDEV_RETURN_INT
2176          LC_KERNEL_SPLICE_READ
2177          LC_KERNEL_SENDFILE
2178          LC_HAVE_EXPORTFS_H
2179          LC_VM_OP_FAULT
2180          LC_PROCFS_USERS
2181          LC_EXPORTFS_DECODE_FH
2182
2183          # 2.6.24
2184          LC_HAVE_MMTYPES_H
2185          LC_BIO_ENDIO_2ARG
2186          LC_FH_TO_DENTRY
2187          LC_PROCFS_DELETED
2188          LC_EXPORT_BDI_INIT
2189
2190          # 2.6.26
2191          LC_FS_STRUCT_USE_PATH
2192
2193          # 2.6.27
2194          LC_PGMKWRITE_USE_VMFAULT
2195          LC_INODE_PERMISION_2ARGS
2196          LC_FILE_REMOVE_SUID
2197          LC_TRYLOCKPAGE
2198          LC_READ_INODE_IN_SBOPS
2199          LC_EXPORT_INODE_PERMISSION
2200          LC_QUOTA_ON_5ARGS
2201          LC_QUOTA_OFF_3ARGS
2202          LC_VFS_DQ_OFF
2203          LC_LOCK_MAP_ACQUIRE
2204
2205          # 2.6.27.15-2 sles11
2206          LC_BI_HW_SEGMENTS
2207          LC_HAVE_QUOTAIO_H
2208          LC_BDI_NAME
2209          LC_SB_ANY_QUOTA_ACTIVE
2210          LC_SB_HAS_QUOTA_ACTIVE
2211          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
2212
2213          # 2.6.29
2214          LC_SB_ANY_QUOTA_LOADED
2215
2216          # 2.6.30
2217          LC_EXPORT_CPUMASK_OF_NODE
2218
2219          # 2.6.31
2220          LC_BLK_QUEUE_LOG_BLK_SIZE
2221
2222          # 2.6.32
2223          LC_REQUEST_QUEUE_LIMITS
2224          LC_EXPORT_BDI_REGISTER
2225          LC_SB_BDI
2226          LC_BLK_QUEUE_MAX_SECTORS
2227          LC_BLK_QUEUE_MAX_SEGMENTS
2228          LC_SET_CPUS_ALLOWED
2229          LC_CACHE_UPCALL
2230          LC_EXPORT_GENERIC_ERROR_REMOVE_PAGE
2231
2232          # 2.6.35, 3.0.0
2233          LC_FILE_FSYNC
2234          LC_EXPORT_SIMPLE_SETATTR
2235
2236          # 2.6.36
2237          LC_FS_STRUCT_RWLOCK
2238          LC_SBOPS_EVICT_INODE
2239
2240          # 2.6.38
2241          LC_ATOMIC_MNT_COUNT
2242          LC_BLKDEV_GET_BY_DEV
2243          LC_GENERIC_PERMISSION
2244          LC_QUOTA_ON_USE_PATH
2245
2246          # 2.6.39
2247          LC_REQUEST_QUEUE_UNPLUG_FN
2248
2249          #
2250          if test x$enable_server = xyes ; then
2251              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2252              LC_FUNC_DEV_SET_RDONLY
2253              LC_STACK_SIZE
2254              LC_QUOTA64
2255          fi
2256 ])
2257
2258 #
2259 # LC_CONFIG_CLIENT_SERVER
2260 #
2261 # Build client/server sides of Lustre
2262 #
2263 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2264 [AC_MSG_CHECKING([whether to build Lustre server support])
2265 AC_ARG_ENABLE([server],
2266         AC_HELP_STRING([--disable-server],
2267                         [disable Lustre server support]),
2268         [],[enable_server='yes'])
2269 AC_MSG_RESULT([$enable_server])
2270
2271 AC_MSG_CHECKING([whether to build Lustre client support])
2272 AC_ARG_ENABLE([client],
2273         AC_HELP_STRING([--disable-client],
2274                         [disable Lustre client support]),
2275         [],[enable_client='yes'])
2276 AC_MSG_RESULT([$enable_client])])
2277
2278 #
2279 # LC_CONFIG_LIBLUSTRE
2280 #
2281 # whether to build liblustre
2282 #
2283 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2284 [AC_MSG_CHECKING([whether to build Lustre library])
2285 AC_ARG_ENABLE([liblustre],
2286         AC_HELP_STRING([--disable-liblustre],
2287                         [disable building of Lustre library]),
2288         [],[enable_liblustre=$with_sysio])
2289 AC_MSG_RESULT([$enable_liblustre])
2290 # only build sysio if liblustre is built
2291 with_sysio="$enable_liblustre"
2292
2293 AC_MSG_CHECKING([whether to build liblustre tests])
2294 AC_ARG_ENABLE([liblustre-tests],
2295         AC_HELP_STRING([--enable-liblustre-tests],
2296                         [enable liblustre tests, if --disable-tests is used]),
2297         [],[enable_liblustre_tests=$enable_tests])
2298 if test x$enable_liblustre != xyes ; then
2299    enable_liblustre_tests='no'
2300 fi
2301 AC_MSG_RESULT([$enable_liblustre_tests])
2302
2303 AC_MSG_CHECKING([whether to enable liblustre acl])
2304 AC_ARG_ENABLE([liblustre-acl],
2305         AC_HELP_STRING([--disable-liblustre-acl],
2306                         [disable ACL support for liblustre]),
2307         [],[enable_liblustre_acl=yes])
2308 AC_MSG_RESULT([$enable_liblustre_acl])
2309 if test x$enable_liblustre_acl = xyes ; then
2310   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2311 fi
2312
2313 # 2.6.29 change prepare/commit_write to write_begin/end
2314 AC_DEFUN([LC_WRITE_BEGIN_END],
2315 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2316 LB_LINUX_TRY_COMPILE([
2317         #include <linux/fs.h>
2318         #include <linux/pagemap.h>
2319 #ifdef HAVE_LINUX_MMTYPES_H
2320         #include <linux/mm_types.h>
2321 #endif
2322 ],[
2323         struct address_space_operations aops;
2324         struct page *page;
2325
2326         aops.write_begin = NULL;
2327         aops.write_end = NULL;
2328         page = grab_cache_page_write_begin(NULL, 0, 0);
2329 ], [
2330         AC_MSG_RESULT([yes])
2331         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2332                 [kernel has .write_begin/end])
2333 ],[
2334         AC_MSG_RESULT([no])
2335 ])
2336 ])
2337
2338 # 2.6.29 blkdev_put has 2 arguments
2339 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2340 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2341 LB_LINUX_TRY_COMPILE([
2342         #include <linux/fs.h>
2343 ],[
2344         blkdev_put(NULL, 0);
2345 ],[
2346         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2347                 [blkdev_put needs 2 paramters])
2348         AC_MSG_RESULT([yes])
2349 ],[
2350         AC_MSG_RESULT([no])
2351 ])
2352 ])
2353
2354 # 2.6.29 dentry_open has 4 arguments
2355 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2356 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2357 LB_LINUX_TRY_COMPILE([
2358         #include <linux/fs.h>
2359 ],[
2360         dentry_open(NULL, NULL, 0, NULL);
2361 ],[
2362         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2363                 [dentry_open needs 4 paramters])
2364         AC_MSG_RESULT([yes])
2365 ],[
2366         AC_MSG_RESULT([no])
2367 ])
2368 ])
2369
2370 # 2.6.29 split file and anonymous page queues
2371 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2372 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2373 LB_LINUX_TRY_COMPILE([
2374         #include <linux/mm.h>
2375         #include <linux/pagevec.h>
2376 ],[
2377         struct pagevec lru_pagevec;
2378
2379         pagevec_init(&lru_pagevec, 0);
2380         pagevec_lru_add_file(&lru_pagevec);
2381 ],[
2382         AC_MSG_RESULT([yes])
2383         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2384                 [kernel has .pagevec_lru_add_file])
2385 ],[
2386         AC_MSG_RESULT([no])
2387 ])
2388 ])
2389
2390 #
2391 # --enable-mpitest
2392 #
2393 AC_ARG_ENABLE(mpitests,
2394         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2395                            [include mpi tests]),
2396         [
2397          enable_mpitests=yes
2398          case $enableval in
2399          yes)
2400                 MPICC_WRAPPER=mpicc
2401                 ;;
2402          no)
2403                 enable_mpitests=no
2404                 ;;
2405          *)
2406                 MPICC_WRAPPER=$enableval
2407                  ;;
2408          esac
2409         ],
2410         [
2411         MPICC_WRAPPER=mpicc
2412         enable_mpitests=yes
2413         ]
2414 )
2415
2416 if test x$enable_mpitests != xno; then
2417         AC_MSG_CHECKING([whether mpitests can be built])
2418         oldcc=$CC
2419         CC=$MPICC_WRAPPER
2420         AC_LINK_IFELSE(
2421             [AC_LANG_PROGRAM([[
2422                     #include <mpi.h>
2423                 ]],[[
2424                     int flag;
2425                     MPI_Initialized(&flag);
2426                 ]])],
2427             [
2428                     AC_MSG_RESULT([yes])
2429             ],[
2430                     AC_MSG_RESULT([no])
2431                     enable_mpitests=no
2432         ])
2433         CC=$oldcc
2434 fi
2435 AC_SUBST(MPICC_WRAPPER)
2436
2437 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2438 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2439
2440 LC_CONFIG_PINGER
2441 LC_CONFIG_LIBLUSTRE_RECOVERY
2442 ])
2443
2444 #
2445 # LC_CONFIG_QUOTA
2446 #
2447 # whether to enable quota support global control
2448 #
2449 AC_DEFUN([LC_CONFIG_QUOTA],
2450 [AC_ARG_ENABLE([quota],
2451         AC_HELP_STRING([--enable-quota],
2452                         [enable quota support]),
2453         [],[enable_quota='yes'])
2454 ])
2455
2456 AC_DEFUN([LC_QUOTA],
2457 [#check global
2458 LC_CONFIG_QUOTA
2459 #check for utils
2460 AC_CHECK_HEADER(sys/quota.h,
2461                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2462                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2463 ])
2464
2465 #
2466 # LC_CONFIG_SPLIT
2467 #
2468 # whether to enable split support
2469 #
2470 AC_DEFUN([LC_CONFIG_SPLIT],
2471 [AC_MSG_CHECKING([whether to enable split support])
2472 AC_ARG_ENABLE([split],
2473         AC_HELP_STRING([--enable-split],
2474                         [enable split support]),
2475         [],[enable_split='no'])
2476 AC_MSG_RESULT([$enable_split])
2477 if test x$enable_split != xno; then
2478    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2479 fi
2480 ])
2481
2482 # RHEL5(2.6.18) has tux_info
2483 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2484 [AC_MSG_CHECKING([tux_info])
2485 LB_LINUX_TRY_COMPILE([
2486         #include <linux/sched.h>
2487 ],[
2488         struct task_struct task;
2489         &task.tux_info;
2490 ],[
2491         AC_MSG_RESULT([yes])
2492         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2493         have_task_clenv_store='yes'
2494 ],[
2495         AC_MSG_RESULT([no])
2496 ])
2497 ])
2498
2499 #
2500 # LC_LLITE_LLOOP_MODULE
2501 # lloop_llite.ko does not currently work with page sizes
2502 # of 64k or larger.
2503 #
2504 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2505 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2506 LB_LINUX_TRY_COMPILE([
2507         #include <asm/page.h>
2508 ],[
2509         #if PAGE_SIZE >= 65536
2510         #error "PAGE_SIZE >= 65536"
2511         #endif
2512 ],[
2513         enable_llite_lloop_module='yes'
2514         AC_MSG_RESULT([yes])
2515 ],[
2516         enable_llite_lloop_module='no'
2517         AC_MSG_RESULT([no])
2518 ])
2519 ])
2520
2521 #
2522 # LC_CONFIGURE
2523 #
2524 # other configure checks
2525 #
2526 AC_DEFUN([LC_CONFIGURE],
2527 [LC_CONFIG_OBD_BUFFER_SIZE
2528
2529 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2530         CFLAGS="$CFLAGS -Werror"
2531 fi
2532
2533 # maximum MDS thread count
2534 LC_MDS_MAX_THREADS
2535
2536 # include/liblustre.h
2537 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2538
2539 # liblustre/llite_lib.h
2540 AC_CHECK_HEADERS([xtio.h file.h])
2541
2542 # liblustre/dir.c
2543 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2544
2545 # liblustre/lutil.c
2546 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2547 AC_CHECK_FUNCS([inet_ntoa])
2548
2549 # libsysio/src/readlink.c
2550 LC_READLINK_SSIZE_T
2551
2552 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2553 AC_CHECK_HEADERS([linux/random.h], [], [],
2554                  [#ifdef HAVE_LINUX_TYPES_H
2555                   # include <linux/types.h>
2556                   #endif
2557                  ])
2558
2559 # utils/llverfs.c
2560 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2561
2562 # check for -lz support
2563 ZLIB=""
2564 AC_CHECK_LIB([z],
2565              [adler32],
2566              [AC_CHECK_HEADERS([zlib.h],
2567                                [ZLIB="-lz"
2568                                 AC_DEFINE([HAVE_ADLER], 1,
2569                                           [support alder32 checksum type])],
2570                                [AC_MSG_WARN([No zlib-devel package found,
2571                                              unable to use adler32 checksum])])],
2572              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2573 )
2574 AC_SUBST(ZLIB)
2575
2576 # Super safe df
2577 AC_ARG_ENABLE([mindf],
2578       AC_HELP_STRING([--enable-mindf],
2579                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2580       [],[])
2581 if test "$enable_mindf" = "yes" ;  then
2582       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2583 fi
2584
2585 AC_ARG_ENABLE([fail_alloc],
2586         AC_HELP_STRING([--disable-fail-alloc],
2587                 [disable randomly alloc failure]),
2588         [],[enable_fail_alloc=yes])
2589 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2590 AC_MSG_RESULT([$enable_fail_alloc])
2591 if test x$enable_fail_alloc != xno ; then
2592         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2593 fi
2594
2595 AC_ARG_ENABLE([invariants],
2596         AC_HELP_STRING([--enable-invariants],
2597                 [enable invariant checking (cpu intensive)]),
2598         [],[])
2599 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2600 AC_MSG_RESULT([$enable_invariants])
2601 if test x$enable_invariants = xyes ; then
2602         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2603 fi
2604
2605 AC_ARG_ENABLE([lu_ref],
2606         AC_HELP_STRING([--enable-lu_ref],
2607                 [enable lu_ref reference tracking code]),
2608         [],[])
2609 AC_MSG_CHECKING([whether to track references with lu_ref])
2610 AC_MSG_RESULT([$enable_lu_ref])
2611 if test x$enable_lu_ref = xyes ; then
2612         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2613 fi
2614
2615 AC_ARG_ENABLE([pgstate-track],
2616               AC_HELP_STRING([--enable-pgstate-track],
2617                              [enable page state tracking]),
2618               [enable_pgstat_track='yes'],[])
2619 AC_MSG_CHECKING([whether to enable page state tracking])
2620 AC_MSG_RESULT([$enable_pgstat_track])
2621 if test x$enable_pgstat_track = xyes ; then
2622         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2623                   [enable page state tracking code])
2624 fi
2625
2626          #2.6.29
2627          LC_WRITE_BEGIN_END
2628          LC_D_OBTAIN_ALIAS
2629          LC_BLKDEV_PUT_2ARGS
2630          LC_DENTRY_OPEN_4ARGS
2631          LC_PAGEVEC_LRU_ADD_FILE
2632
2633 ])
2634
2635 #
2636 # LC_CONDITIONALS
2637 #
2638 # AM_CONDITIONALS for lustre
2639 #
2640 AC_DEFUN([LC_CONDITIONALS],
2641 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2642 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2643 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2644 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2645 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2646 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2647 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2648 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2649 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2650 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2651 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2652 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2653 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2654 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2655 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2656 ])
2657
2658 #
2659 # LC_CONFIG_FILES
2660 #
2661 # files that should be generated with AC_OUTPUT
2662 #
2663 AC_DEFUN([LC_CONFIG_FILES],
2664 [AC_CONFIG_FILES([
2665 lustre/Makefile
2666 lustre/autoMakefile
2667 lustre/autoconf/Makefile
2668 lustre/conf/Makefile
2669 lustre/contrib/Makefile
2670 lustre/doc/Makefile
2671 lustre/include/Makefile
2672 lustre/include/lustre_ver.h
2673 lustre/include/linux/Makefile
2674 lustre/include/darwin/Makefile
2675 lustre/include/lustre/Makefile
2676 lustre/kernel_patches/targets/2.6-rhel6.target
2677 lustre/kernel_patches/targets/2.6-rhel5.target
2678 lustre/kernel_patches/targets/2.6-sles10.target
2679 lustre/kernel_patches/targets/2.6-sles11.target
2680 lustre/kernel_patches/targets/2.6-oel5.target
2681 lustre/kernel_patches/targets/2.6-fc11.target
2682 lustre/kernel_patches/targets/2.6-fc12.target
2683 lustre/ldlm/Makefile
2684 lustre/fid/Makefile
2685 lustre/fid/autoMakefile
2686 lustre/liblustre/Makefile
2687 lustre/liblustre/tests/Makefile
2688 lustre/liblustre/tests/mpi/Makefile
2689 lustre/llite/Makefile
2690 lustre/llite/autoMakefile
2691 lustre/lclient/Makefile
2692 lustre/lov/Makefile
2693 lustre/lov/autoMakefile
2694 lustre/lvfs/Makefile
2695 lustre/lvfs/autoMakefile
2696 lustre/mdc/Makefile
2697 lustre/mdc/autoMakefile
2698 lustre/lmv/Makefile
2699 lustre/lmv/autoMakefile
2700 lustre/mds/Makefile
2701 lustre/mds/autoMakefile
2702 lustre/mdt/Makefile
2703 lustre/mdt/autoMakefile
2704 lustre/cmm/Makefile
2705 lustre/cmm/autoMakefile
2706 lustre/mdd/Makefile
2707 lustre/mdd/autoMakefile
2708 lustre/fld/Makefile
2709 lustre/fld/autoMakefile
2710 lustre/obdclass/Makefile
2711 lustre/obdclass/autoMakefile
2712 lustre/obdclass/linux/Makefile
2713 lustre/obdecho/Makefile
2714 lustre/obdecho/autoMakefile
2715 lustre/obdfilter/Makefile
2716 lustre/obdfilter/autoMakefile
2717 lustre/osc/Makefile
2718 lustre/osc/autoMakefile
2719 lustre/ost/Makefile
2720 lustre/ost/autoMakefile
2721 lustre/osd-ldiskfs/Makefile
2722 lustre/osd-ldiskfs/autoMakefile
2723 lustre/mgc/Makefile
2724 lustre/mgc/autoMakefile
2725 lustre/mgs/Makefile
2726 lustre/mgs/autoMakefile
2727 lustre/ptlrpc/Makefile
2728 lustre/ptlrpc/autoMakefile
2729 lustre/ptlrpc/gss/Makefile
2730 lustre/ptlrpc/gss/autoMakefile
2731 lustre/quota/Makefile
2732 lustre/quota/autoMakefile
2733 lustre/scripts/Makefile
2734 lustre/tests/Makefile
2735 lustre/tests/mpi/Makefile
2736 lustre/utils/Makefile
2737 lustre/utils/gss/Makefile
2738 lustre/obdclass/darwin/Makefile
2739 ])
2740 ])