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 ])
  12
  13 #
  14 # LC_PATH_DEFAULTS
  15 #
  16 # lustre specific paths
  17 #
  18 AC_DEFUN([LC_PATH_DEFAULTS],
  19 [# ptlrpc kernel build requires this
  20 LUSTRE="$PWD/lustre"
  21 AC_SUBST(LUSTRE)
  22
  23 # mount.lustre
  24 rootsbindir='/sbin'
  25 AC_SUBST(rootsbindir)
  26
  27 demodir='$(docdir)/demo'
  28 AC_SUBST(demodir)
  29
  30 pkgexampledir='${pkgdatadir}/examples'
  31 AC_SUBST(pkgexampledir)
  32 ])
  33
  34 #
  35 # LC_TARGET_SUPPORTED
  36 #
  37 # is the target os supported?
  38 #
  39 AC_DEFUN([LC_TARGET_SUPPORTED],
  40 [case $target_os in
  41         linux* | darwin*)
  42 $1
  43                 ;;
  44         *)
  45 $2
  46                 ;;
  47 esac
  48 ])
  49
  50 #
  51 # LC_CONFIG_EXT3
  52 #
  53 # that ext3 is enabled in the kernel
  54 #
  55 AC_DEFUN([LC_CONFIG_EXT3],
  56 [LB_LINUX_CONFIG([EXT3_FS],[],[
  57         LB_LINUX_CONFIG([EXT3_FS_MODULE],[],[$2])
  58 ])
  59 LB_LINUX_CONFIG([EXT3_FS_XATTR],[$1],[$3])
  60 ])
  61
  62 #
  63 # LC_FSHOOKS
  64 #
  65 # If we have (and can build) fshooks.h
  66 #
  67 AC_DEFUN([LC_FSHOOKS],
  68 [LB_CHECK_FILE([$LINUX/include/linux/fshooks.h],[
  69         AC_MSG_CHECKING([if fshooks.h can be compiled])
  70         LB_LINUX_TRY_COMPILE([
  71                 #include <linux/fshooks.h>
  72         ],[],[
  73                 AC_MSG_RESULT([yes])
  74         ],[
  75                 AC_MSG_RESULT([no])
  76                 AC_MSG_WARN([You might have better luck with gcc 3.3.x.])
  77                 AC_MSG_WARN([You can set CC=gcc33 before running configure.])
  78                 AC_MSG_ERROR([Your compiler cannot build fshooks.h.])
  79         ])
  80 $1
  81 ],[
  82 $2
  83 ])
  84 ])
  85
  86 #
  87 # LC_STRUCT_KIOBUF
  88 #
  89 # rh 2.4.18 has iobuf->dovary, but other kernels do not
  90 #
  91 AC_DEFUN([LC_STRUCT_KIOBUF],
  92 [AC_MSG_CHECKING([if struct kiobuf has a dovary field])
  93 LB_LINUX_TRY_COMPILE([
  94         #include <linux/iobuf.h>
  95 ],[
  96         struct kiobuf iobuf;
  97         iobuf.dovary = 1;
  98 ],[
  99         AC_MSG_RESULT([yes])
 100         AC_DEFINE(HAVE_KIOBUF_DOVARY, 1, [struct kiobuf has a dovary field])
 101 ],[
 102         AC_MSG_RESULT([no])
 103 ])
 104 ])
 105
 106 #
 107 # LC_FUNC_COND_RESCHED
 108 #
 109 # cond_resched() was introduced in 2.4.20
 110 #
 111 AC_DEFUN([LC_FUNC_COND_RESCHED],
 112 [AC_MSG_CHECKING([if kernel offers cond_resched])
 113 LB_LINUX_TRY_COMPILE([
 114         #include <linux/sched.h>
 115 ],[
 116         cond_resched();
 117 ],[
 118         AC_MSG_RESULT([yes])
 119         AC_DEFINE(HAVE_COND_RESCHED, 1, [cond_resched found])
 120 ],[
 121         AC_MSG_RESULT([no])
 122 ])
 123 ])
 124
 125 #
 126 # LC_FUNC_ZAP_PAGE_RANGE
 127 #
 128 # if zap_page_range() takes a vma arg
 129 #
 130 AC_DEFUN([LC_FUNC_ZAP_PAGE_RANGE],
 131 [AC_MSG_CHECKING([if zap_page_range with vma parameter])
 132 ZAP_PAGE_RANGE_VMA="`grep -c 'zap_page_range.*struct vm_area_struct' $LINUX/include/linux/mm.h`"
 133 if test "$ZAP_PAGE_RANGE_VMA" != 0 ; then
 134         AC_DEFINE(ZAP_PAGE_RANGE_VMA, 1, [zap_page_range with vma parameter])
 135         AC_MSG_RESULT([yes])
 136 else
 137         AC_MSG_RESULT([no])
 138 fi
 139 ])
 140
 141 #
 142 # LC_FUNC_PDE
 143 #
 144 # if proc_fs.h defines PDE()
 145 #
 146 AC_DEFUN([LC_FUNC_PDE],
 147 [AC_MSG_CHECKING([if kernel defines PDE])
 148 HAVE_PDE="`grep -c 'proc_dir_entry..PDE' $LINUX/include/linux/proc_fs.h`"
 149 if test "$HAVE_PDE" != 0 ; then
 150         AC_DEFINE(HAVE_PDE, 1, [the kernel defines PDE])
 151         AC_MSG_RESULT([yes])
 152 else
 153         AC_MSG_RESULT([no])
 154 fi
 155 ])
 156
 157 #
 158 # LC_FUNC_FILEMAP_FDATASYNC
 159 #
 160 # if filemap_fdatasync() exists
 161 #
 162 AC_DEFUN([LC_FUNC_FILEMAP_FDATAWRITE],
 163 [AC_MSG_CHECKING([whether filemap_fdatawrite() is defined])
 164 LB_LINUX_TRY_COMPILE([
 165         #include <linux/fs.h>
 166 ],[
 167         int (*foo)(struct address_space *)= filemap_fdatawrite;
 168 ],[
 169         AC_MSG_RESULT([yes])
 170         AC_DEFINE(HAVE_FILEMAP_FDATAWRITE, 1, [filemap_fdatawrite() found])
 171 ],[
 172         AC_MSG_RESULT([no])
 173 ])
 174 ])
 175
 176 #
 177 # LC_FUNC_DIRECT_IO
 178 #
 179 # if direct_IO takes a struct file argument
 180 #
 181 AC_DEFUN([LC_FUNC_DIRECT_IO],
 182 [AC_MSG_CHECKING([if kernel passes struct file to direct_IO])
 183 HAVE_DIO_FILE="`grep -c 'direct_IO.*struct file' $LINUX/include/linux/fs.h`"
 184 if test "$HAVE_DIO_FILE" != 0 ; then
 185         AC_DEFINE(HAVE_DIO_FILE, 1, [the kernel passes struct file to direct_IO])
 186         AC_MSG_RESULT(yes)
 187 else
 188         AC_MSG_RESULT(no)
 189 fi
 190 ])
 191
 192 #
 193 # LC_HEADER_MM_INLINE
 194 #
 195 # RHEL kernels define page_count in mm_inline.h
 196 #
 197 AC_DEFUN([LC_HEADER_MM_INLINE],
 198 [AC_MSG_CHECKING([if kernel has mm_inline.h header])
 199 LB_LINUX_TRY_COMPILE([
 200         #include <linux/mm_inline.h>
 201 ],[
 202         #ifndef page_count
 203         #error mm_inline.h does not define page_count
 204         #endif
 205 ],[
 206         AC_MSG_RESULT([yes])
 207         AC_DEFINE(HAVE_MM_INLINE, 1, [mm_inline found])
 208 ],[
 209         AC_MSG_RESULT([no])
 210 ])
 211 ])
 212
 213 #
 214 # LC_STRUCT_INODE
 215 #
 216 # if inode->i_alloc_sem exists
 217 #
 218 AC_DEFUN([LC_STRUCT_INODE],
 219 [AC_MSG_CHECKING([if struct inode has i_alloc_sem])
 220 LB_LINUX_TRY_COMPILE([
 221         #include <linux/fs.h>
 222         #include <linux/version.h>
 223 ],[
 224         #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,24))
 225         #error "down_read_trylock broken before 2.4.24"
 226         #endif
 227         struct inode i;
 228         return (char *)&i.i_alloc_sem - (char *)&i;
 229 ],[
 230         AC_MSG_RESULT([yes])
 231         AC_DEFINE(HAVE_I_ALLOC_SEM, 1, [struct inode has i_alloc_sem])
 232 ],[
 233         AC_MSG_RESULT([no])
 234 ])
 235 ])
 236
 237 #
 238 # LC_FUNC_REGISTER_CACHE
 239 #
 240 # if register_cache() is defined by kernel
 241 #
 242 # There are two ways to shrink one customized cache in linux kernels. For the
 243 # kernels are prior than 2.6.5(?), register_cache() is used, and for latest
 244 # kernels, set_shrinker() is used instead.
 245 #
 246 AC_DEFUN([LC_FUNC_REGISTER_CACHE],
 247 [AC_MSG_CHECKING([if kernel defines cache pressure hook])
 248 LB_LINUX_TRY_COMPILE([
 249         #include <linux/mm.h>
 250 ],[
 251         shrinker_t shrinker;
 252
 253         set_shrinker(1, shrinker);
 254 ],[
 255         AC_MSG_RESULT([set_shrinker])
 256         AC_DEFINE(HAVE_SHRINKER_CACHE, 1, [shrinker_cache found])
 257         AC_DEFINE(HAVE_CACHE_RETURN_INT, 1, [shrinkers should return int])
 258 ],[
 259         LB_LINUX_TRY_COMPILE([
 260                 #include <linux/list.h>
 261                 #include <linux/cache_def.h>
 262         ],[
 263                 struct cache_definition cache;
 264         ],[
 265                 AC_MSG_RESULT([register_cache])
 266                 AC_DEFINE(HAVE_REGISTER_CACHE, 1, [register_cache found])
 267                 AC_MSG_CHECKING([if kernel expects return from cache shrink ])
 268                 tmp_flags="$EXTRA_KCFLAGS"
 269                 EXTRA_KCFLAGS="-Werror"
 270                 LB_LINUX_TRY_COMPILE([
 271                         #include <linux/list.h>
 272                         #include <linux/cache_def.h>
 273                 ],[
 274                         struct cache_definition c;
 275                         c.shrinker = (int (*)(int, unsigned int))1;
 276                 ],[
 277                         AC_DEFINE(HAVE_CACHE_RETURN_INT, 1,
 278                                   [kernel expects return from shrink_cache])
 279                         AC_MSG_RESULT(yes)
 280                 ],[
 281                         AC_MSG_RESULT(no)
 282                 ])
 283                 EXTRA_KCFLAGS="$tmp_flags"
 284         ],[
 285                 AC_MSG_RESULT([no])
 286         ])
 287 ])
 288 ])
 289
 290 #
 291 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
 292 #
 293 # check for our patched grab_cache_page_nowait_gfp() function
 294 #
 295 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
 296 [AC_MSG_CHECKING([if kernel defines grab_cache_page_nowait_gfp()])
 297 HAVE_GCPN_GFP="`grep -c 'grab_cache_page_nowait_gfp' $LINUX/include/linux/pagemap.h`"
 298 if test "$HAVE_GCPN_GFP" != 0 ; then
 299         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
 300                 [kernel has grab_cache_page_nowait_gfp()])
 301         AC_MSG_RESULT(yes)
 302 else
 303         AC_MSG_RESULT(no)
 304 fi
 305 ])
 306
 307 #
 308 # LC_FUNC_DEV_SET_RDONLY
 309 #
 310 # check for the old-style dev_set_rdonly which took an extra "devno" param
 311 # and can only set a single device to discard writes at one time
 312 #
 313 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
 314 [AC_MSG_CHECKING([if kernel has new dev_set_rdonly])
 315 LB_LINUX_TRY_COMPILE([
 316         #include <linux/fs.h>
 317 ],[
 318         #ifndef HAVE_CLEAR_RDONLY_ON_PUT
 319         #error needs to be patched by lustre kernel patches from Lustre version 1.4.3 or above.
 320         #endif
 321 ],[
 322         AC_MSG_RESULT([yes])
 323         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel has new dev_set_rdonly])
 324 ],[
 325         AC_MSG_RESULT([no, Linux kernel source needs to be patches by lustre
 326 kernel patches from Lustre version 1.4.3 or above.])
 327 ])
 328 ])
 329
 330 #
 331 # LC_CONFIG_BACKINGFS
 332 #
 333 # setup, check the backing filesystem
 334 #
 335 AC_DEFUN([LC_CONFIG_BACKINGFS],
 336 [
 337 BACKINGFS="ldiskfs"
 338
 339 if test x$with_ldiskfs = xno ; then
 340         BACKINGFS="ext3"
 341
 342         if test x$linux25$enable_server = xyesyes ; then
 343                 AC_MSG_ERROR([ldiskfs is required for 2.6-based servers.])
 344         fi
 345
 346         # --- Check that ext3 and ext3 xattr are enabled in the kernel
 347         LC_CONFIG_EXT3([],[
 348                 AC_MSG_ERROR([Lustre requires that ext3 is enabled in the kernel])
 349         ],[
 350                 AC_MSG_WARN([Lustre requires that extended attributes for ext3 are enabled in the kernel])
 351                 AC_MSG_WARN([This build may fail.])
 352         ])
 353 else
 354         # ldiskfs is enabled
 355         LB_DEFINE_LDISKFS_OPTIONS
 356 fi #ldiskfs
 357
 358 AC_MSG_CHECKING([which backing filesystem to use])
 359 AC_MSG_RESULT([$BACKINGFS])
 360 AC_SUBST(BACKINGFS)
 361 ])
 362
 363 #
 364 # LC_CONFIG_PINGER
 365 #
 366 # the pinger is temporary, until we have the recovery node in place
 367 #
 368 AC_DEFUN([LC_CONFIG_PINGER],
 369 [AC_MSG_CHECKING([whether to enable pinger support])
 370 AC_ARG_ENABLE([pinger],
 371         AC_HELP_STRING([--disable-pinger],
 372                         [disable recovery pinger support]),
 373         [],[enable_pinger='yes'])
 374 AC_MSG_RESULT([$enable_pinger])
 375 if test x$enable_pinger != xno ; then
 376   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 377 fi
 378 ])
 379
 380 #
 381 # LC_CONFIG_CHECKSUM
 382 #
 383 # do checksum of bulk data between client and OST
 384 #
 385 AC_DEFUN([LC_CONFIG_CHECKSUM],
 386 [AC_MSG_CHECKING([whether to enable data checksum support])
 387 AC_ARG_ENABLE([checksum],
 388        AC_HELP_STRING([--disable-checksum],
 389                        [disable data checksum support]),
 390        [],[enable_checksum='yes'])
 391 AC_MSG_RESULT([$enable_checksum])
 392 if test x$enable_checksum != xno ; then
 393   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 394 fi
 395 ])
 396
 397 #
 398 # LC_CONFIG_HEALTH_CHECK_WRITE
 399 #
 400 # Turn off the actual write to the disk
 401 #
 402 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 403 [AC_MSG_CHECKING([whether to enable a write with the health check])
 404 AC_ARG_ENABLE([health_write],
 405         AC_HELP_STRING([--enable-health_write],
 406                         [enable disk writes when doing health check]),
 407         [],[enable_health_write='no'])
 408 AC_MSG_RESULT([$enable_health_write])
 409 if test x$enable_health_write != xno ; then
 410   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 411 fi
 412 ])
 413
 414 #
 415 # LC_CONFIG_LIBLUSTRE_RECOVERY
 416 #
 417 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 418 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 419 AC_ARG_ENABLE([liblustre-recovery],
 420         AC_HELP_STRING([--disable-liblustre-recovery],
 421                         [disable liblustre recovery support]),
 422         [],[enable_liblustre_recovery='yes'])
 423 AC_MSG_RESULT([$enable_liblustre_recovery])
 424 if test x$enable_liblustre_recovery != xno ; then
 425   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 426 fi
 427 ])
 428
 429 #
 430 # LC_CONFIG_OBD_BUFFER_SIZE
 431 #
 432 # the maximum buffer size of lctl ioctls
 433 #
 434 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
 435 [AC_MSG_CHECKING([maximum OBD ioctl size])
 436 AC_ARG_WITH([obd-buffer-size],
 437         AC_HELP_STRING([--with-obd-buffer-size=[size]],
 438                         [set lctl ioctl maximum bytes (default=8192)]),
 439         [
 440                 OBD_BUFFER_SIZE=$with_obd_buffer_size
 441         ],[
 442                 OBD_BUFFER_SIZE=8192
 443         ])
 444 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
 445 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
 446 ])
 447
 448 #
 449 # LC_STRUCT_STATFS
 450 #
 451 # AIX does not have statfs.f_namelen
 452 #
 453 AC_DEFUN([LC_STRUCT_STATFS],
 454 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
 455 LB_LINUX_TRY_COMPILE([
 456         #include <linux/vfs.h>
 457 ],[
 458         struct statfs sfs;
 459         sfs.f_namelen = 1;
 460 ],[
 461         AC_MSG_RESULT([yes])
 462         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
 463 ],[
 464         AC_MSG_RESULT([no])
 465 ])
 466 ])
 467
 468 #
 469 # LC_READLINK_SSIZE_T
 470 #
 471 AC_DEFUN([LC_READLINK_SSIZE_T],
 472 [AC_MSG_CHECKING([if readlink returns ssize_t])
 473 AC_TRY_COMPILE([
 474         #include <unistd.h>
 475 ],[
 476         ssize_t readlink(const char *, char *, size_t);
 477 ],[
 478         AC_MSG_RESULT([yes])
 479         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
 480 ],[
 481         AC_MSG_RESULT([no])
 482 ])
 483 ])
 484
 485 AC_DEFUN([LC_FUNC_PAGE_MAPPED],
 486 [AC_MSG_CHECKING([if kernel offers page_mapped])
 487 LB_LINUX_TRY_COMPILE([
 488         #include <linux/mm.h>
 489 ],[
 490         page_mapped(NULL);
 491 ],[
 492         AC_MSG_RESULT([yes])
 493         AC_DEFINE(HAVE_PAGE_MAPPED, 1, [page_mapped found])
 494 ],[
 495         AC_MSG_RESULT([no])
 496 ])
 497 ])
 498
 499 AC_DEFUN([LC_STRUCT_FILE_OPS_UNLOCKED_IOCTL],
 500 [AC_MSG_CHECKING([if struct file_operations has an unlocked_ioctl field])
 501 LB_LINUX_TRY_COMPILE([
 502         #include <linux/fs.h>
 503 ],[
 504         struct file_operations fops;
 505         &fops.unlocked_ioctl;
 506 ],[
 507         AC_MSG_RESULT([yes])
 508         AC_DEFINE(HAVE_UNLOCKED_IOCTL, 1, [struct file_operations has an unlock ed_ioctl field])
 509 ],[
 510         AC_MSG_RESULT([no])
 511 ])
 512 ])
 513
 514 AC_DEFUN([LC_FILEMAP_POPULATE],
 515 [AC_MSG_CHECKING([for exported filemap_populate])
 516 LB_LINUX_TRY_COMPILE([
 517         #include <asm/page.h>
 518         #include <linux/mm.h>
 519 ],[
 520        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 521 ],[
 522         AC_MSG_RESULT([yes])
 523         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 524 ],[
 525         AC_MSG_RESULT([no])
 526 ])
 527 ])
 528
 529 AC_DEFUN([LC_D_ADD_UNIQUE],
 530 [AC_MSG_CHECKING([for d_add_unique])
 531 LB_LINUX_TRY_COMPILE([
 532         #include <linux/dcache.h>
 533 ],[
 534        d_add_unique(NULL, NULL);
 535 ],[
 536         AC_MSG_RESULT([yes])
 537         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
 538 ],[
 539         AC_MSG_RESULT([no])
 540 ])
 541 ])
 542
 543 AC_DEFUN([LC_BIT_SPINLOCK_H],
 544 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 545         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 546         LB_LINUX_TRY_COMPILE([
 547                 #include <asm/processor.h>
 548                 #include <linux/spinlock.h>
 549                 #include <linux/bit_spinlock.h>
 550         ],[],[
 551                 AC_MSG_RESULT([yes])
 552                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 553         ],[
 554                 AC_MSG_RESULT([no])
 555         ])
 556 ],
 557 [])
 558 ])
 559
 560 #
 561 # LC_POSIX_ACL_XATTR
 562 #
 563 # If we have xattr_acl.h
 564 #
 565 AC_DEFUN([LC_XATTR_ACL],
 566 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
 567         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 568         LB_LINUX_TRY_COMPILE([
 569                 #include <linux/xattr_acl.h>
 570         ],[],[
 571                 AC_MSG_RESULT([yes])
 572                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 573         ],[
 574                 AC_MSG_RESULT([no])
 575         ])
 576 ],
 577 [])
 578 ])
 579
 580 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 581 [AC_MSG_CHECKING([if struct open_intent has a file field])
 582 LB_LINUX_TRY_COMPILE([
 583         #include <linux/fs.h>
 584         #include <linux/namei.h>
 585 ],[
 586         struct open_intent intent;
 587         &intent.file;
 588 ],[
 589         AC_MSG_RESULT([yes])
 590         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 591 ],[
 592         AC_MSG_RESULT([no])
 593 ])
 594 ])
 595
 596
 597 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
 598 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
 599         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
 600         LB_LINUX_TRY_COMPILE([
 601                 #include <linux/posix_acl_xattr.h>
 602         ],[],[
 603                 AC_MSG_RESULT([yes])
 604                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 605
 606         ],[
 607                 AC_MSG_RESULT([no])
 608         ])
 609 $1
 610 ],[
 611 AC_MSG_RESULT([no])
 612 ])
 613 ])
 614
 615 #
 616 # LC_EXPORT___IGET
 617 # starting from 2.6.19 linux kernel exports __iget()
 618 #
 619 AC_DEFUN([LC_EXPORT___IGET],
 620 [LB_CHECK_SYMBOL_EXPORT([__iget],
 621 [fs/inode.c],[
 622         AC_DEFINE(HAVE_EXPORT___IGET, 1, [kernel exports __iget])
 623 ],[
 624 ])
 625 ])
 626
 627 AC_DEFUN([LC_LUSTRE_VERSION_H],
 628 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 629         rm -f "$LUSTRE/include/linux/lustre_version.h"
 630 ],[
 631         touch "$LUSTRE/include/linux/lustre_version.h"
 632         if test x$enable_server = xyes ; then
 633                 AC_MSG_WARN([Unpatched kernel detected.])
 634                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
 635                 AC_MSG_WARN([disabling server build])
 636                 enable_server='no'
 637         fi
 638 ])
 639 ])
 640
 641 AC_DEFUN([LC_FUNC_SET_FS_PWD],
 642 [LB_CHECK_SYMBOL_EXPORT([set_fs_pwd],
 643 [fs/namespace.c],[
 644         AC_DEFINE(HAVE_SET_FS_PWD, 1, [set_fs_pwd is exported])
 645 ],[
 646 ])
 647 ])
 648
 649 #
 650 # LC_CAPA_CRYPTO
 651 #
 652 AC_DEFUN([LC_CAPA_CRYPTO],
 653 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 654         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 655 ])
 656 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 657         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 658 ])
 659 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 660         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 661 ])
 662 ])
 663
 664 AC_DEFUN([LC_SUNRPC_CACHE],
 665 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 666 LB_LINUX_TRY_COMPILE([
 667         #include <linux/sunrpc/cache.h>
 668 ],[
 669         struct cache_head ch;
 670         &ch.ref.refcount;
 671 ],[
 672         AC_MSG_RESULT([yes])
 673         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 674 ],[
 675         AC_MSG_RESULT([no])
 676 ])
 677 ])
 678
 679 AC_DEFUN([LC_CONFIG_SUNRPC],
 680 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 681                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 682  LC_SUNRPC_CACHE
 683 ])
 684
 685 #
 686 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 687 #
 688 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 689 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 690  AC_ARG_ENABLE([gss_keyring],
 691                [AC_HELP_STRING([--disable-gss-keyring],
 692                                [disable gss keyring backend])],
 693                [],[enable_gss_keyring='yes'])
 694  AC_MSG_RESULT([$enable_gss_keyring])
 695
 696  if test x$enable_gss_keyring != xno; then
 697         LB_LINUX_CONFIG_IM([KEYS],[],
 698                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 699
 700         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 701                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 702
 703         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 704                   [Define this if you enable gss keyring backend])
 705  fi
 706 ])
 707
 708 m4_pattern_allow(AC_KERBEROS_V5)
 709
 710 #
 711 # LC_CONFIG_GSS (default disabled)
 712 #
 713 # Build gss and related tools of Lustre. Currently both kernel and user space
 714 # parts are depend on linux platform.
 715 #
 716 AC_DEFUN([LC_CONFIG_GSS],
 717 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 718  AC_ARG_ENABLE([gss],
 719                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 720                [],[enable_gss='no'])
 721  AC_MSG_RESULT([$enable_gss])
 722
 723  if test x$enable_gss == xyes; then
 724         LC_CONFIG_GSS_KEYRING
 725         LC_CONFIG_SUNRPC
 726
 727         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 728                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 729         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 730                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 731         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 732                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 733         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 734                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 735         LB_LINUX_CONFIG_IM([CRYPTO_WP512],[],
 736                            [AC_MSG_WARN([kernel WP512 support is recommended by using GSS.])])
 737         LB_LINUX_CONFIG_IM([CRYPTO_ARC4],[],
 738                            [AC_MSG_WARN([kernel ARC4 support is recommended by using GSS.])])
 739         LB_LINUX_CONFIG_IM([CRYPTO_DES],[],
 740                            [AC_MSG_WARN([kernel DES support is recommended by using GSS.])])
 741         LB_LINUX_CONFIG_IM([CRYPTO_TWOFISH],[],
 742                            [AC_MSG_WARN([kernel TWOFISH support is recommended by using GSS.])])
 743         LB_LINUX_CONFIG_IM([CRYPTO_CAST6],[],
 744                            [AC_MSG_WARN([kernel CAST6 support is recommended by using GSS.])])
 745         dnl FIXME
 746         dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 747         dnl FIXME
 748         LB_LINUX_CONFIG_IM([CRYPTO_AES],[],
 749                            [AC_MSG_WARN([kernel AES support is recommended by using GSS.])])
 750
 751         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 752                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 753                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 754                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 755                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 756
 757         AC_SUBST(GSSAPI_LIBS)
 758
 759         AC_KERBEROS_V5
 760  fi
 761 ])
 762
 763 # LC_FUNC_MS_FLOCK_LOCK
 764 #
 765 # SLES9 kernel has MS_FLOCK_LOCK sb flag
 766 #
 767 AC_DEFUN([LC_FUNC_MS_FLOCK_LOCK],
 768 [AC_MSG_CHECKING([if kernel has MS_FLOCK_LOCK sb flag])
 769 LB_LINUX_TRY_COMPILE([
 770         #include <linux/fs.h>
 771 ],[
 772         int flags = MS_FLOCK_LOCK;
 773 ],[
 774         AC_DEFINE(HAVE_MS_FLOCK_LOCK, 1,
 775                 [kernel has MS_FLOCK_LOCK flag])
 776         AC_MSG_RESULT([yes])
 777 ],[
 778         AC_MSG_RESULT([no])
 779 ])
 780 ])
 781
 782 #
 783 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 784 #
 785 # SLES9 kernel has third arg can_sleep
 786 # in fs/locks.c: flock_lock_file_wait()
 787 #
 788 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 789 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 790 LB_LINUX_TRY_COMPILE([
 791         #include <linux/fs.h>
 792 ],[
 793         int cansleep;
 794         struct file *file;
 795         struct file_lock *file_lock;
 796         flock_lock_file_wait(file, file_lock, cansleep);
 797 ],[
 798         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 799                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 800         AC_MSG_RESULT([yes])
 801 ],[
 802         AC_MSG_RESULT([no])
 803 ])
 804 ])
 805
 806 #
 807 # LC_FUNC_F_OP_FLOCK
 808 #
 809 # rhel4.2 kernel has f_op->flock field
 810 #
 811 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 812 [AC_MSG_CHECKING([if struct file_operations has flock field])
 813 LB_LINUX_TRY_COMPILE([
 814         #include <linux/fs.h>
 815 ],[
 816         struct file_operations ll_file_operations_flock;
 817         ll_file_operations_flock.flock = NULL;
 818 ],[
 819         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 820                 [struct file_operations has flock field])
 821         AC_MSG_RESULT([yes])
 822 ],[
 823         AC_MSG_RESULT([no])
 824 ])
 825 ])
 826
 827 #
 828 # LC_TASK_PPTR
 829 #
 830 # task struct has p_pptr instead of parent
 831 #
 832 AC_DEFUN([LC_TASK_PPTR],
 833 [AC_MSG_CHECKING([task p_pptr found])
 834 LB_LINUX_TRY_COMPILE([
 835         #include <linux/sched.h>
 836 ],[
 837         struct task_struct *p;
 838
 839         p = p->p_pptr;
 840 ],[
 841         AC_MSG_RESULT([yes])
 842         AC_DEFINE(HAVE_TASK_PPTR, 1, [task p_pptr found])
 843 ],[
 844         AC_MSG_RESULT([no])
 845 ])
 846 ])
 847
 848 #
 849 # LC_FUNC_F_OP_FLOCK
 850 #
 851 # rhel4.2 kernel has f_op->flock field
 852 #
 853 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 854 [AC_MSG_CHECKING([if struct file_operations has flock field])
 855 LB_LINUX_TRY_COMPILE([
 856         #include <linux/fs.h>
 857 ],[
 858         struct file_operations ll_file_operations_flock;
 859         ll_file_operations_flock.flock = NULL;
 860 ],[
 861         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 862                 [struct file_operations has flock field])
 863         AC_MSG_RESULT([yes])
 864 ],[
 865         AC_MSG_RESULT([no])
 866 ])
 867 ])
 868
 869 # LC_INODE_I_MUTEX
 870 # after 2.6.15 inode have i_mutex intead of i_sem
 871 AC_DEFUN([LC_INODE_I_MUTEX],
 872 [AC_MSG_CHECKING([use inode have i_mutex ])
 873 LB_LINUX_TRY_COMPILE([
 874         #include <linux/mutex.h>
 875         #include <linux/fs.h>
 876         #undef i_mutex
 877 ],[
 878         struct inode i;
 879
 880         mutex_unlock(&i.i_mutex);
 881 ],[
 882         AC_MSG_RESULT(yes)
 883         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 884                 [after 2.6.15 inode have i_mutex intead of i_sem])
 885 ],[
 886         AC_MSG_RESULT(NO)
 887 ])
 888 ])
 889
 890 # LC_DQUOTOFF_MUTEX
 891 # after 2.6.17 dquote use mutex instead if semaphore
 892 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 893 [AC_MSG_CHECKING([use dqonoff_mutex])
 894 LB_LINUX_TRY_COMPILE([
 895         #include <linux/mutex.h>
 896         #include <linux/fs.h>
 897         #include <linux/quota.h>
 898 ],[
 899         struct quota_info dq;
 900
 901         mutex_unlock(&dq.dqonoff_mutex);
 902 ],[
 903         AC_MSG_RESULT(yes)
 904         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 905                 [after 2.6.17 dquote use mutex instead if semaphore])
 906 ],[
 907         AC_MSG_RESULT(NO)
 908 ])
 909 ])
 910
 911 #
 912 # LC_STATFS_DENTRY_PARAM
 913 # starting from 2.6.18 linux kernel uses dentry instead of
 914 # super_block for first vfs_statfs argument
 915 #
 916 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 917 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
 918 LB_LINUX_TRY_COMPILE([
 919         #include <linux/fs.h>
 920 ],[
 921         int vfs_statfs(struct dentry *, struct kstatfs *);
 922 ],[
 923         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 924                 [first parameter of vfs_statfs is dentry])
 925         AC_MSG_RESULT([yes])
 926 ],[
 927         AC_MSG_RESULT([no])
 928 ])
 929 ])
 930
 931 #
 932 # LC_VFS_KERN_MOUNT
 933 # starting from 2.6.18 kernel don't export do_kern_mount
 934 # and want to use vfs_kern_mount instead.
 935 #
 936 AC_DEFUN([LC_VFS_KERN_MOUNT],
 937 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
 938 LB_LINUX_TRY_COMPILE([
 939         #include <linux/mount.h>
 940 ],[
 941         vfs_kern_mount(NULL, 0, NULL, NULL);
 942 ],[
 943         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
 944                 [vfs_kern_mount exist in kernel])
 945         AC_MSG_RESULT([yes])
 946 ],[
 947         AC_MSG_RESULT([no])
 948 ])
 949 ])
 950
 951 #
 952 # LC_INVALIDATEPAGE_RETURN_INT
 953 # more 2.6 api changes.  return type for the invalidatepage
 954 # address_space_operation is 'void' in new kernels but 'int' in old
 955 #
 956 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
 957 [AC_MSG_CHECKING([invalidatepage has return int])
 958 LB_LINUX_TRY_COMPILE([
 959         #include <linux/buffer_head.h>
 960 ],[
 961         int rc = block_invalidatepage(NULL, 0);
 962 ],[
 963         AC_MSG_RESULT(yes)
 964         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
 965                 [Define if return type of invalidatepage should be int])
 966 ],[
 967         AC_MSG_RESULT(NO)
 968 ])
 969 ])
 970
 971 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 972 # more 2.6 API changes. 2.6.18 umount_begin has different parameters
 973 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 974 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 975 tmp_flags="$EXTRA_KCFLAGS"
 976 EXTRA_KCFLAGS="-Werror"
 977 LB_LINUX_TRY_COMPILE([
 978         #include <linux/fs.h>
 979
 980         struct vfsmount;
 981         static void cfg_umount_begin (struct vfsmount *v, int flags)
 982         {
 983                 ;
 984         }
 985
 986         static struct super_operations cfg_super_operations = {
 987                 .umount_begin   = cfg_umount_begin,
 988         };
 989 ],[
 990         cfg_super_operations.umount_begin(NULL,0);
 991 ],[
 992         AC_MSG_RESULT(yes)
 993         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
 994                 [Define umount_begin need second argument])
 995 ],[
 996         AC_MSG_RESULT(NO)
 997 ])
 998 EXTRA_KCFLAGS="$tmp_flags"
 999 ])
1000
1001 # 2.6.19 API changes
1002 # inode don't have i_blksize field
1003 AC_DEFUN([LC_INODE_BLKSIZE],
1004 [AC_MSG_CHECKING([inode has i_blksize field])
1005 LB_LINUX_TRY_COMPILE([
1006 #include <linux/fs.h>
1007 ],[
1008         struct inode i;
1009         i.i_blksize = 0;
1010 ],[
1011         AC_MSG_RESULT(yes)
1012         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1013                 [struct inode has i_blksize field])
1014 ],[
1015         AC_MSG_RESULT(NO)
1016 ])
1017 ])
1018
1019 # LC_VFS_READDIR_U64_INO
1020 # 2.6.19 use u64 for inode number instead of inode_t
1021 AC_DEFUN([LC_VFS_READDIR_U64_INO],
1022 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
1023 tmp_flags="$EXTRA_KCFLAGS"
1024 EXTRA_KCFLAGS="-Werror"
1025 LB_LINUX_TRY_COMPILE([
1026 #include <linux/fs.h>
1027         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
1028                       u64 ino, unsigned int d_type)
1029         {
1030                 return 0;
1031         }
1032 ],[
1033         filldir_t filter;
1034
1035         filter = fillonedir;
1036         return 1;
1037 ],[
1038         AC_MSG_RESULT(yes)
1039         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
1040                 [if vfs_readdir need 64bit inode number])
1041 ],[
1042         AC_MSG_RESULT(NO)
1043 ])
1044 EXTRA_KCFLAGS="$tmp_flags"
1045 ])
1046
1047 # LC_GENERIC_FILE_WRITE
1048 # 2.6.19 introduce do_sync_write instead of
1049 # generic_file_write
1050 AC_DEFUN([LC_GENERIC_FILE_WRITE],
1051 [AC_MSG_CHECKING([use generic_file_write])
1052 LB_LINUX_TRY_COMPILE([
1053         #include <linux/fs.h>
1054 ],[
1055         int result = generic_file_read(NULL, NULL, 0, 0);
1056 ],[
1057         AC_MSG_RESULT(yes)
1058         AC_DEFINE(HAVE_GENERIC_FILE_WRITE, 1,
1059                 [use generic_file_write])
1060 ],[
1061         AC_MSG_RESULT(NO)
1062 ])
1063 ])
1064
1065 # LC_GENERIC_FILE_READ
1066 # 2.6.19 need to use do_sync_read instead of
1067 # generic_file_read
1068 AC_DEFUN([LC_GENERIC_FILE_READ],
1069 [AC_MSG_CHECKING([use generic_file_read])
1070 LB_LINUX_TRY_COMPILE([
1071         #include <linux/fs.h>
1072 ],[
1073         int result = generic_file_read(NULL, NULL, 0, 0);
1074 ],[
1075         AC_MSG_RESULT(yes)
1076         AC_DEFINE(HAVE_GENERIC_FILE_READ, 1,
1077                 [use generic_file_read])
1078 ],[
1079         AC_MSG_RESULT(NO)
1080 ])
1081 ])
1082
1083 # LC_NR_PAGECACHE
1084 # 2.6.18 don't export nr_pagecahe
1085 AC_DEFUN([LC_NR_PAGECACHE],
1086 [AC_MSG_CHECKING([kernel export nr_pagecache])
1087 LB_LINUX_TRY_COMPILE([
1088         #include <linux/pagemap.h>
1089 ],[
1090         return atomic_read(&nr_pagecache);
1091 ],[
1092         AC_MSG_RESULT(yes)
1093         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
1094                 [is kernel export nr_pagecache])
1095 ],[
1096         AC_MSG_RESULT(NO)
1097 ])
1098 ])
1099
1100 # LC_CANCEL_DIRTY_PAGE
1101 # 2.6.20 introduse cancel_dirty_page instead of
1102 # clear_page_dirty.
1103 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1104 [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1105 LB_LINUX_TRY_COMPILE([
1106         #include <linux/page-flags.h>
1107 ],[
1108         cancel_dirty_page(NULL, 0);
1109 ],[
1110         AC_MSG_RESULT(yes)
1111         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1112                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1113 ],[
1114         AC_MSG_RESULT(NO)
1115 ])
1116 ])
1117
1118 #
1119 # LC_PAGE_CONSTANT
1120 #
1121 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1122 # it support constant page, which means the page won't be modified during the
1123 # IO.
1124 #
1125 AC_DEFUN([LC_PAGE_CONSTANT],
1126 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1127 LB_LINUX_TRY_COMPILE([
1128         #include <linux/page-flags.h>
1129 ],[
1130         #ifndef PG_constant
1131         #error "Have no raid5 zcopy patch"
1132         #endif
1133 ],[
1134         AC_MSG_RESULT(yes)
1135         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1136 ],[
1137         AC_MSG_RESULT(no);
1138 ])
1139 ])
1140
1141 # RHEL5 in FS-cache patch rename PG_checked flag
1142 # into PG_fs_misc
1143 AC_DEFUN([LC_PG_FS_MISC],
1144 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1145 LB_LINUX_TRY_COMPILE([
1146         #include <linux/page-flags.h>
1147 ],[
1148         #ifndef PG_fs_misc
1149         #error PG_fs_misc not defined in kernel
1150         #endif
1151 ],[
1152         AC_MSG_RESULT(yes)
1153         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1154                   [is kernel have PG_fs_misc])
1155 ],[
1156         AC_MSG_RESULT(NO)
1157 ])
1158 ])
1159
1160 # RHEL5 PageChecked and SetPageChecked defined
1161 AC_DEFUN([LC_PAGE_CHECKED],
1162 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1163 LB_LINUX_TRY_COMPILE([
1164         #include <linux/page-flags.h>
1165 ],[
1166         #ifndef PageChecked
1167         #error PageChecked not defined in kernel
1168         #endif
1169         #ifndef SetPageChecked
1170         #error SetPageChecked not defined in kernel
1171         #endif
1172 ],[
1173         AC_MSG_RESULT(yes)
1174         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1175                   [does kernel have PageChecked and SetPageChecked])
1176 ],[
1177         AC_MSG_RESULT(NO)
1178 ])
1179 ])
1180
1181 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
1182 [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
1183 [mm/truncate.c],[
1184 AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
1185             [kernel export truncate_complete_page])
1186 ],[
1187 ])
1188 ])
1189
1190 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
1191 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
1192 [fs/dcache.c],[
1193 AC_DEFINE(HAVE_D_REHASH_COND, 1,
1194             [d_rehash_cond is exported by the kernel])
1195 ],[
1196 ])
1197 ])
1198
1199 AC_DEFUN([LC_EXPORT___D_REHASH],
1200 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
1201 [fs/dcache.c],[
1202 AC_DEFINE(HAVE___D_REHASH, 1,
1203             [__d_rehash is exported by the kernel])
1204 ],[
1205 ])
1206 ])
1207
1208 AC_DEFUN([LC_EXPORT_D_MOVE_LOCKED],
1209 [LB_CHECK_SYMBOL_EXPORT([d_move_locked],
1210 [fs/dcache.c],[
1211 AC_DEFINE(HAVE_D_MOVE_LOCKED, 1,
1212             [d_move_locked is exported by the kernel])
1213 ],[
1214 ])
1215 ])
1216
1217 AC_DEFUN([LC_EXPORT___D_MOVE],
1218 [LB_CHECK_SYMBOL_EXPORT([__d_move],
1219 [fs/dcache.c],[
1220 AC_DEFINE(HAVE___D_MOVE, 1,
1221             [__d_move is exported by the kernel])
1222 ],[
1223 ])
1224 ])
1225
1226 # The actual symbol exported varies among architectures, so we need
1227 # to check many symbols (but only in the current architecture.)  No
1228 # matter what symbol is exported, the kernel #defines node_to_cpumask
1229 # to the appropriate function and that's what we use.
1230 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
1231          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
1232                                  [arch/$LINUX_ARCH/mm/numa.c],
1233                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1234                                             [node_to_cpumask is exported by
1235                                              the kernel])]) # x86_64
1236           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
1237                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1238                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1239                                             [node_to_cpumask is exported by
1240                                              the kernel])]) # ia64
1241           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
1242                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1243                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1244                                             [node_to_cpumask is exported by
1245                                              the kernel])]) # i386
1246           ])
1247
1248 # 2.6.22 lost second parameter for invalidate_bdev
1249 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1250 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1251 LB_LINUX_TRY_COMPILE([
1252         #include <linux/buffer_head.h>
1253 ],[
1254         invalidate_bdev(NULL,0);
1255 ],[
1256         AC_MSG_RESULT([yes])
1257         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1258                 [invalidate_bdev has second argument])
1259 ],[
1260         AC_MSG_RESULT([no])
1261 ])
1262 ])
1263
1264 # 2.6.23 have return type 'void' for unregister_blkdev
1265 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1266 [AC_MSG_CHECKING([if unregister_blkdev return int])
1267 LB_LINUX_TRY_COMPILE([
1268         #include <linux/fs.h>
1269 ],[
1270         int i = unregister_blkdev(0,NULL);
1271 ],[
1272         AC_MSG_RESULT([yes])
1273         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1274                 [unregister_blkdev return int])
1275 ],[
1276         AC_MSG_RESULT([no])
1277 ])
1278 ])
1279
1280 # 2.6.23 change .sendfile to .splice_read
1281 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1282 [AC_MSG_CHECKING([if kernel has .splice_read])
1283 LB_LINUX_TRY_COMPILE([
1284         #include <linux/fs.h>
1285 ],[
1286         struct file_operations file;
1287
1288         file.splice_read = NULL;
1289 ], [
1290         AC_MSG_RESULT([yes])
1291         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1292                 [kernel has .slice_read])
1293 ],[
1294         AC_MSG_RESULT([no])
1295 ])
1296 ])
1297
1298 # 2.6.23 extract nfs export related data into exportfs.h
1299 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1300 [
1301 tmpfl="$CFLAGS"
1302 CFLAGS="$CFLAGS -I$LINUX_OBJ/include"
1303 AC_CHECK_HEADERS([linux/exportfs.h])
1304 CFLAGS="$tmpfl"
1305 ])
1306
1307 #
1308 # LC_VFS_INTENT_PATCHES
1309 #
1310 # check if the kernel has the VFS intent patches
1311 AC_DEFUN([LC_VFS_INTENT_PATCHES],
1312 [AC_MSG_CHECKING([if the kernel has the VFS intent patches])
1313 LB_LINUX_TRY_COMPILE([
1314         #include <linux/fs.h>
1315         #include <linux/namei.h>
1316 ],[
1317         struct nameidata nd;
1318         struct lookup_intent *it;
1319
1320         it = &nd.intent;
1321         intent_init(it, IT_OPEN);
1322         it->d.lustre.it_disposition = 0;
1323         it->d.lustre.it_data = NULL;
1324 ],[
1325         AC_MSG_RESULT([yes])
1326         AC_DEFINE(HAVE_VFS_INTENT_PATCHES, 1, [VFS intent patches are applied])
1327 ],[
1328         AC_MSG_RESULT([no])
1329 ])
1330 ])
1331
1332 AC_DEFUN([LC_S_TIME_GRAN],
1333 [AC_MSG_CHECKING([if super block has s_time_gran member])
1334 LB_LINUX_TRY_COMPILE([
1335         #include <linux/fs.h>
1336 ],[
1337         struct super_block sb;
1338
1339         return sb.s_time_gran;
1340 ],[
1341         AC_MSG_RESULT([yes])
1342         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
1343 ],[
1344         AC_MSG_RESULT([no])
1345 ])
1346 ])
1347
1348 AC_DEFUN([LC_SB_TIME_GRAN],
1349 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
1350 LB_LINUX_TRY_COMPILE([
1351         #include <linux/fs.h>
1352 ],[
1353         return get_sb_time_gran(NULL);
1354 ],[
1355         AC_MSG_RESULT([yes])
1356         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
1357 ],[
1358         AC_MSG_RESULT([no])
1359 ])
1360 ])
1361
1362
1363 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
1364 AC_DEFUN([LC_RW_TREE_LOCK],
1365 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
1366 tmp_flags="$EXTRA_KCFLAGS"
1367 EXTRA_KCFLAGS="-Werror"
1368 LB_LINUX_TRY_COMPILE([
1369         #include <linux/fs.h>
1370 ],[
1371         struct address_space a;
1372
1373         write_lock(&a.tree_lock);
1374 ],[
1375         AC_MSG_RESULT([yes])
1376         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
1377 ],[
1378         AC_MSG_RESULT([no])
1379 ])
1380 EXTRA_KCFLAGS="$tmp_flags"
1381 ])
1382
1383 AC_DEFUN([LC_CONST_ACL_SIZE],
1384 [AC_MSG_CHECKING([calc acl size])
1385 tmp_flags="$CFLAGS"
1386 CFLAGS="$CFLAGS -I $LINUX_OBJ/include $EXTRA_KCFLAGS"
1387 AC_TRY_RUN([
1388 #define __KERNEL__
1389 #include <linux/autoconf.h>
1390 #include <linux/types.h>
1391 #undef __KERNEL__
1392 // block include
1393 #define __LINUX_POSIX_ACL_H
1394
1395 # ifdef CONFIG_FS_POSIX_ACL
1396 #  ifdef HAVE_XATTR_ACL
1397 #   include <linux/xattr_acl.h>
1398 #  endif
1399 #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
1400 #   include <linux/posix_acl_xattr.h>
1401 #  endif
1402 # endif
1403
1404 #include <lustre_acl.h>
1405
1406 #include <stdio.h>
1407
1408 int main(void)
1409 {
1410     int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
1411     FILE *f = fopen("acl.size","w+");
1412     fprintf(f,"%d", size);
1413     fclose(f);
1414
1415     return 0;
1416 }
1417
1418 ],[
1419         acl_size=`cat acl.size`
1420         AC_MSG_RESULT([ACL size $acl_size])
1421         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
1422 ],[
1423         AC_ERROR([ACL size can't computed])
1424 ])
1425 CFLAGS="$tmp_flags"
1426 ])
1427
1428 #
1429 # check for crypto API
1430 #
1431 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1432 [AC_MSG_CHECKING([if kernel has block cipher support])
1433 LB_LINUX_TRY_COMPILE([
1434         #include <linux/crypto.h>
1435 ],[
1436         int v = CRYPTO_ALG_TYPE_BLKCIPHER;
1437 ],[
1438         AC_MSG_RESULT([yes])
1439         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1440 ],[
1441         AC_MSG_RESULT([no])
1442 ])
1443 ])
1444
1445 #
1446 # check for FS_RENAME_DOES_D_MOVE flag
1447 #
1448 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1449 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1450 LB_LINUX_TRY_COMPILE([
1451         #include <linux/fs.h>
1452 ],[
1453         int v = FS_RENAME_DOES_D_MOVE;
1454 ],[
1455         AC_MSG_RESULT([yes])
1456         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1457 ],[
1458         AC_MSG_RESULT([no])
1459 ])
1460 ])
1461
1462 #
1463 # LC_PROG_LINUX
1464 #
1465 # Lustre linux kernel checks
1466 #
1467 AC_DEFUN([LC_PROG_LINUX],
1468          [LC_LUSTRE_VERSION_H
1469          if test x$enable_server = xyes ; then
1470              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
1471              LC_CONFIG_BACKINGFS
1472          fi
1473          LC_CONFIG_PINGER
1474          LC_CONFIG_CHECKSUM
1475          LC_CONFIG_LIBLUSTRE_RECOVERY
1476          LC_CONFIG_QUOTA
1477          LC_CONFIG_HEALTH_CHECK_WRITE
1478          LC_CONFIG_LRU_RESIZE
1479
1480          LC_TASK_PPTR
1481          # RHEL4 patches
1482          LC_EXPORT_TRUNCATE_COMPLETE
1483          LC_EXPORT_D_REHASH_COND
1484          LC_EXPORT___D_REHASH
1485          LC_EXPORT_D_MOVE_LOCKED
1486          LC_EXPORT___D_MOVE
1487          LC_EXPORT_NODE_TO_CPUMASK
1488
1489          LC_STRUCT_KIOBUF
1490          LC_FUNC_COND_RESCHED
1491          LC_FUNC_ZAP_PAGE_RANGE
1492          LC_FUNC_PDE
1493          LC_FUNC_DIRECT_IO
1494          LC_HEADER_MM_INLINE
1495          LC_STRUCT_INODE
1496          LC_FUNC_REGISTER_CACHE
1497          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1498          LC_FUNC_DEV_SET_RDONLY
1499          LC_FUNC_FILEMAP_FDATAWRITE
1500          LC_STRUCT_STATFS
1501          LC_FUNC_PAGE_MAPPED
1502          LC_STRUCT_FILE_OPS_UNLOCKED_IOCTL
1503          LC_FILEMAP_POPULATE
1504          LC_D_ADD_UNIQUE
1505          LC_BIT_SPINLOCK_H
1506
1507          LC_XATTR_ACL
1508          LC_POSIX_ACL_XATTR_H
1509          LC_CONST_ACL_SIZE
1510
1511          LC_STRUCT_INTENT_FILE
1512
1513          LC_FUNC_SET_FS_PWD
1514          LC_CAPA_CRYPTO
1515          LC_CONFIG_GSS
1516          LC_FUNC_MS_FLOCK_LOCK
1517          LC_FUNC_HAVE_CAN_SLEEP_ARG
1518          LC_FUNC_F_OP_FLOCK
1519          LC_QUOTA_READ
1520          LC_COOKIE_FOLLOW_LINK
1521          LC_FUNC_RCU
1522          LC_PERCPU_COUNTER
1523
1524          # does the kernel have VFS intent patches?
1525          LC_VFS_INTENT_PATCHES
1526
1527          # ~2.6.11
1528          LC_S_TIME_GRAN
1529          LC_SB_TIME_GRAN
1530
1531          # 2.6.12
1532          LC_RW_TREE_LOCK
1533
1534          # 2.6.15
1535          LC_INODE_I_MUTEX
1536
1537          # 2.6.16
1538          LC_SECURITY_PLUG  # for SLES10 SP2
1539
1540          # 2.6.17
1541          LC_DQUOTOFF_MUTEX
1542
1543          # 2.6.18
1544          LC_NR_PAGECACHE
1545          LC_STATFS_DENTRY_PARAM
1546          LC_VFS_KERN_MOUNT
1547          LC_INVALIDATEPAGE_RETURN_INT
1548          LC_UMOUNTBEGIN_HAS_VFSMOUNT
1549
1550          #2.6.18 + RHEL5 (fc6)
1551          LC_PG_FS_MISC
1552          LC_PAGE_CHECKED
1553
1554          # 2.6.19
1555          LC_INODE_BLKSIZE
1556          LC_VFS_READDIR_U64_INO
1557          LC_GENERIC_FILE_READ
1558          LC_GENERIC_FILE_WRITE
1559
1560          # 2.6.20
1561          LC_CANCEL_DIRTY_PAGE
1562
1563          # raid5-zerocopy patch
1564          LC_PAGE_CONSTANT
1565
1566          # 2.6.22
1567          LC_INVALIDATE_BDEV_2ARG
1568          LC_ASYNC_BLOCK_CIPHER
1569          LC_FS_RENAME_DOES_D_MOVE
1570          # 2.6.23
1571          LC_UNREGISTER_BLKDEV_RETURN_INT
1572          LC_KERNEL_SPLICE_READ
1573          LC_HAVE_EXPORTFS_H
1574 ])
1575
1576 #
1577 # LC_CONFIG_CLIENT_SERVER
1578 #
1579 # Build client/server sides of Lustre
1580 #
1581 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
1582 [AC_MSG_CHECKING([whether to build Lustre server support])
1583 AC_ARG_ENABLE([server],
1584         AC_HELP_STRING([--disable-server],
1585                         [disable Lustre server support]),
1586         [],[enable_server='yes'])
1587 AC_MSG_RESULT([$enable_server])
1588
1589 AC_MSG_CHECKING([whether to build Lustre client support])
1590 AC_ARG_ENABLE([client],
1591         AC_HELP_STRING([--disable-client],
1592                         [disable Lustre client support]),
1593         [],[enable_client='yes'])
1594 AC_MSG_RESULT([$enable_client])])
1595
1596 #
1597 # LC_CONFIG_LIBLUSTRE
1598 #
1599 # whether to build liblustre
1600 #
1601 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1602 [AC_MSG_CHECKING([whether to build Lustre library])
1603 AC_ARG_ENABLE([liblustre],
1604         AC_HELP_STRING([--disable-liblustre],
1605                         [disable building of Lustre library]),
1606         [],[enable_liblustre=$with_sysio])
1607 AC_MSG_RESULT([$enable_liblustre])
1608 # only build sysio if liblustre is built
1609 with_sysio="$enable_liblustre"
1610
1611 AC_MSG_CHECKING([whether to build liblustre tests])
1612 AC_ARG_ENABLE([liblustre-tests],
1613         AC_HELP_STRING([--enable-liblustre-tests],
1614                         [enable liblustre tests, if --disable-tests is used]),
1615         [],[enable_liblustre_tests=$enable_tests])
1616 if test x$enable_liblustre != xyes ; then
1617    enable_liblustre_tests='no'
1618 fi
1619 AC_MSG_RESULT([$enable_liblustre_tests])
1620
1621 AC_MSG_CHECKING([whether to enable liblustre acl])
1622 AC_ARG_ENABLE([liblustre-acl],
1623         AC_HELP_STRING([--disable-liblustre-acl],
1624                         [disable ACL support for liblustre]),
1625         [],[enable_liblustre_acl=yes])
1626 AC_MSG_RESULT([$enable_liblustre_acl])
1627 if test x$enable_liblustre_acl = xyes ; then
1628   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1629 fi
1630
1631 AC_MSG_CHECKING([whether to build mpitests])
1632 AC_ARG_ENABLE([mpitests],
1633         AC_HELP_STRING([--enable-mpitests],
1634                         [build liblustre mpi tests]),
1635         [],[enable_mpitests=no])
1636 AC_MSG_RESULT([$enable_mpitests])
1637
1638 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1639 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1640
1641 LC_CONFIG_PINGER
1642 LC_CONFIG_LIBLUSTRE_RECOVERY
1643 ])
1644
1645 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
1646 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
1647 AC_ARG_ENABLE([lru_resize],
1648         AC_HELP_STRING([--enable-lru-resize],
1649                         [enable lru resize support]),
1650         [],[enable_lru_resize='yes'])
1651 AC_MSG_RESULT([$enable_lru_resize])
1652 if test x$enable_lru_resize != xno; then
1653    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
1654 fi
1655 ])
1656
1657 #
1658 # LC_CONFIG_QUOTA
1659 #
1660 # whether to enable quota support
1661 #
1662 AC_DEFUN([LC_CONFIG_QUOTA],
1663 [AC_ARG_ENABLE([quota],
1664         AC_HELP_STRING([--enable-quota],
1665                         [enable quota support]),
1666         [],[enable_quota='default'])
1667 if test x$linux25 != xyes; then
1668         enable_quota='no'
1669 fi
1670 LB_LINUX_CONFIG([QUOTA],[
1671         if test x$enable_quota = xdefault; then
1672                 enable_quota='yes'
1673         fi
1674 ],[
1675         if test x$enable_quota = xdefault; then
1676                 enable_quota='no'
1677                 AC_MSG_WARN([quota is not enabled because the kernel lacks quota support])
1678         else
1679                 if test x$enable_quota = xyes; then
1680                         AC_MSG_ERROR([cannot enable quota because the kernel lacks quota support])
1681                 fi
1682         fi
1683 ])
1684 if test x$enable_quota != xno; then
1685         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
1686 fi
1687 ])
1688
1689 #
1690 # LC_CONFIG_SPLIT
1691 #
1692 # whether to enable split support
1693 #
1694 AC_DEFUN([LC_CONFIG_SPLIT],
1695 [AC_MSG_CHECKING([whether to enable split support])
1696 AC_ARG_ENABLE([split],
1697         AC_HELP_STRING([--enable-split],
1698                         [enable split support]),
1699         [],[enable_split='no'])
1700 AC_MSG_RESULT([$enable_split])
1701 if test x$enable_split != xno; then
1702    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1703 fi
1704 ])
1705
1706 AC_DEFUN([LC_QUOTA_READ],
1707 [AC_MSG_CHECKING([if kernel supports quota_read])
1708 LB_LINUX_TRY_COMPILE([
1709         #include <linux/fs.h>
1710 ],[
1711         struct super_operations sp;
1712         void *i = (void *)sp.quota_read;
1713 ],[
1714         AC_MSG_RESULT([yes])
1715         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
1716 ],[
1717         AC_MSG_RESULT([no])
1718 ])
1719 ])
1720
1721 #
1722 # LC_COOKIE_FOLLOW_LINK
1723 #
1724 # kernel 2.6.13+ ->follow_link returns a cookie
1725 #
1726
1727 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
1728 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
1729 LB_LINUX_TRY_COMPILE([
1730         #include <linux/fs.h>
1731         #include <linux/namei.h>
1732 ],[
1733         struct dentry dentry;
1734         struct nameidata nd;
1735
1736         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
1737 ],[
1738         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
1739         AC_MSG_RESULT([yes])
1740 ],[
1741         AC_MSG_RESULT([no])
1742 ])
1743 ])
1744
1745 #
1746 # LC_FUNC_RCU
1747 #
1748 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
1749 # call_rcu takes three parameters.
1750 #
1751 AC_DEFUN([LC_FUNC_RCU],
1752 [AC_MSG_CHECKING([if kernel have RCU supported])
1753 LB_LINUX_TRY_COMPILE([
1754         #include <linux/rcupdate.h>
1755 ],[],[
1756         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
1757         AC_MSG_RESULT([yes])
1758
1759         AC_MSG_CHECKING([if call_rcu takes three parameters])
1760         LB_LINUX_TRY_COMPILE([
1761                 #include <linux/rcupdate.h>
1762         ],[
1763                 struct rcu_head rh;
1764                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
1765         ],[
1766                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
1767                 AC_MSG_RESULT([yes])
1768         ],[
1769                 AC_MSG_RESULT([no])
1770         ])
1771 ],[
1772         AC_MSG_RESULT([no])
1773 ])
1774 ])
1775
1776 # LC_SECURITY_PLUG  # for SLES10 SP2
1777 # check security plug in sles10 sp2 kernel
1778 AC_DEFUN([LC_SECURITY_PLUG],
1779 [AC_MSG_CHECKING([If kernel has security plug support])
1780 LB_LINUX_TRY_COMPILE([
1781         #include <linux/fs.h>
1782 ],[
1783         struct dentry   *dentry;
1784         struct vfsmount *mnt;
1785         struct iattr    *iattr;
1786
1787         notify_change(dentry, mnt, iattr);
1788 ],[
1789         AC_MSG_RESULT(yes)
1790         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
1791                 [SLES10 SP2 use extra parameter in vfs])
1792 ],[
1793         AC_MSG_RESULT(NO)
1794 ])
1795 ])
1796
1797 AC_DEFUN([LC_PERCPU_COUNTER],
1798 [AC_MSG_CHECKING([if have struct percpu_counter defined])
1799 LB_LINUX_TRY_COMPILE([
1800         #include <linux/percpu_counter.h>
1801 ],[],[
1802         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
1803         AC_MSG_RESULT([yes])
1804
1805         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
1806         LB_LINUX_TRY_COMPILE([
1807                 #include <linux/percpu_counter.h>
1808         ],[
1809                 struct percpu_counter c;
1810                 percpu_counter_init(&c, 0);
1811         ],[
1812                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
1813                                                    arguments])
1814                 AC_MSG_RESULT([yes])
1815         ],[
1816                 AC_MSG_RESULT([no])
1817         ])
1818 ],[
1819         AC_MSG_RESULT([no])
1820 ])
1821 ])
1822
1823 #
1824 # LC_CONFIGURE
1825 #
1826 # other configure checks
1827 #
1828 AC_DEFUN([LC_CONFIGURE],
1829 [LC_CONFIG_OBD_BUFFER_SIZE
1830
1831 # include/liblustre.h
1832 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1833
1834 # liblustre/llite_lib.h
1835 AC_CHECK_HEADERS([xtio.h file.h])
1836
1837 # liblustre/dir.c
1838 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1839
1840 # liblustre/lutil.c
1841 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1842 AC_CHECK_FUNCS([inet_ntoa])
1843
1844 # libsysio/src/readlink.c
1845 LC_READLINK_SSIZE_T
1846
1847 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
1848 AC_CHECK_HEADERS([linux/random.h], [], [],
1849                  [#ifdef HAVE_LINUX_TYPES_H
1850                   # include <linux/types.h>
1851                   #endif
1852                  ])
1853
1854 # utils/llverfs.c
1855 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1856
1857 # check for -lz support
1858 ZLIB=""
1859 AC_CHECK_LIB([z],
1860              [adler32],
1861              [AC_CHECK_HEADERS([zlib.h],
1862                                [ZLIB="-lz"
1863                                 AC_DEFINE([HAVE_ADLER], 1,
1864                                           [support alder32 checksum type])],
1865                                [AC_MSG_WARN([No zlib-devel package found,
1866                                              unable to use adler32 checksum])])],
1867              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
1868 )
1869 AC_SUBST(ZLIB)
1870
1871 # Super safe df
1872 AC_ARG_ENABLE([mindf],
1873       AC_HELP_STRING([--enable-mindf],
1874                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1875       [],[])
1876 if test "$enable_mindf" = "yes" ;  then
1877       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1878 fi
1879
1880 AC_ARG_ENABLE([fail_alloc],
1881         AC_HELP_STRING([--disable-fail-alloc],
1882                 [disable randomly alloc failure]),
1883         [],[enable_fail_alloc=yes])
1884 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1885 AC_MSG_RESULT([$enable_fail_alloc])
1886 if test x$enable_fail_alloc != xno ; then
1887         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1888 fi
1889
1890 ])
1891
1892 #
1893 # LC_CONDITIONALS
1894 #
1895 # AM_CONDITIONALS for lustre
1896 #
1897 AC_DEFUN([LC_CONDITIONALS],
1898 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1899 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
1900 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1901 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1902 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1903 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1904 AM_CONDITIONAL(QUOTA, test x$enable_quota = xyes)
1905 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1906 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1907 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1908 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1909 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1910 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1911 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1912 ])
1913
1914 #
1915 # LC_CONFIG_FILES
1916 #
1917 # files that should be generated with AC_OUTPUT
1918 #
1919 AC_DEFUN([LC_CONFIG_FILES],
1920 [AC_CONFIG_FILES([
1921 lustre/Makefile
1922 lustre/autoMakefile
1923 lustre/autoconf/Makefile
1924 lustre/contrib/Makefile
1925 lustre/doc/Makefile
1926 lustre/include/Makefile
1927 lustre/include/lustre_ver.h
1928 lustre/include/linux/Makefile
1929 lustre/include/lustre/Makefile
1930 lustre/kernel_patches/targets/2.6-vanilla.target
1931 lustre/kernel_patches/targets/2.6-rhel4.target
1932 lustre/kernel_patches/targets/2.6-rhel5.target
1933 lustre/kernel_patches/targets/2.6-fc5.target
1934 lustre/kernel_patches/targets/2.6-patchless.target
1935 lustre/kernel_patches/targets/2.6-sles10.target
1936 lustre/ldlm/Makefile
1937 lustre/fid/Makefile
1938 lustre/fid/autoMakefile
1939 lustre/liblustre/Makefile
1940 lustre/liblustre/tests/Makefile
1941 lustre/llite/Makefile
1942 lustre/llite/autoMakefile
1943 lustre/lov/Makefile
1944 lustre/lov/autoMakefile
1945 lustre/lvfs/Makefile
1946 lustre/lvfs/autoMakefile
1947 lustre/mdc/Makefile
1948 lustre/mdc/autoMakefile
1949 lustre/lmv/Makefile
1950 lustre/lmv/autoMakefile
1951 lustre/mds/Makefile
1952 lustre/mds/autoMakefile
1953 lustre/mdt/Makefile
1954 lustre/mdt/autoMakefile
1955 lustre/cmm/Makefile
1956 lustre/cmm/autoMakefile
1957 lustre/mdd/Makefile
1958 lustre/mdd/autoMakefile
1959 lustre/fld/Makefile
1960 lustre/fld/autoMakefile
1961 lustre/obdclass/Makefile
1962 lustre/obdclass/autoMakefile
1963 lustre/obdclass/linux/Makefile
1964 lustre/obdecho/Makefile
1965 lustre/obdecho/autoMakefile
1966 lustre/obdfilter/Makefile
1967 lustre/obdfilter/autoMakefile
1968 lustre/osc/Makefile
1969 lustre/osc/autoMakefile
1970 lustre/ost/Makefile
1971 lustre/ost/autoMakefile
1972 lustre/osd/Makefile
1973 lustre/osd/autoMakefile
1974 lustre/mgc/Makefile
1975 lustre/mgc/autoMakefile
1976 lustre/mgs/Makefile
1977 lustre/mgs/autoMakefile
1978 lustre/ptlrpc/Makefile
1979 lustre/ptlrpc/autoMakefile
1980 lustre/ptlrpc/gss/Makefile
1981 lustre/ptlrpc/gss/autoMakefile
1982 lustre/quota/Makefile
1983 lustre/quota/autoMakefile
1984 lustre/scripts/Makefile
1985 lustre/scripts/version_tag.pl
1986 lustre/tests/Makefile
1987 lustre/utils/Makefile
1988 lustre/utils/gss/Makefile
1989 ])
1990 case $lb_target_os in
1991         darwin)
1992                 AC_CONFIG_FILES([ lustre/obdclass/darwin/Makefile ])
1993                 ;;
1994 esac
1995
1996 ])