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([$LINUX/include/linux/xattr_acl.h],[
 567         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 568         LB_LINUX_TRY_COMPILE([
 569                 #include <linux/xattr_acl.h>
 570         ],[],[
 571                 AC_MSG_RESULT([yes])
 572                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 573         ],[
 574                 AC_MSG_RESULT([no])
 575         ])
 576 ],
 577 [])
 578 ])
 579
 580 #
 581 # LC_LINUX_FIEMAP_H
 582 #
 583 # If we have fiemap.h
 584 # after 2.6.27 use fiemap.h in include/linux
 585 #
 586 AC_DEFUN([LC_LINUX_FIEMAP_H],
 587 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
 588         AC_MSG_CHECKING([if fiemap.h can be compiled])
 589         LB_LINUX_TRY_COMPILE([
 590                 #include <linux/fiemap.h>
 591         ],[],[
 592                 AC_MSG_RESULT([yes])
 593                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
 594         ],[
 595                 AC_MSG_RESULT([no])
 596         ])
 597 ],
 598 [])
 599 ])
 600
 601
 602 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 603 [AC_MSG_CHECKING([if struct open_intent has a file field])
 604 LB_LINUX_TRY_COMPILE([
 605         #include <linux/fs.h>
 606         #include <linux/namei.h>
 607 ],[
 608         struct open_intent intent;
 609         &intent.file;
 610 ],[
 611         AC_MSG_RESULT([yes])
 612         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 613 ],[
 614         AC_MSG_RESULT([no])
 615 ])
 616 ])
 617
 618
 619 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
 620 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
 621         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
 622         LB_LINUX_TRY_COMPILE([
 623                 #include <linux/posix_acl_xattr.h>
 624         ],[],[
 625                 AC_MSG_RESULT([yes])
 626                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 627
 628         ],[
 629                 AC_MSG_RESULT([no])
 630         ])
 631 $1
 632 ],[
 633 AC_MSG_RESULT([no])
 634 ])
 635 ])
 636
 637 #
 638 # LC_EXPORT___IGET
 639 # starting from 2.6.19 linux kernel exports __iget()
 640 #
 641 AC_DEFUN([LC_EXPORT___IGET],
 642 [LB_CHECK_SYMBOL_EXPORT([__iget],
 643 [fs/inode.c],[
 644         AC_DEFINE(HAVE_EXPORT___IGET, 1, [kernel exports __iget])
 645 ],[
 646 ])
 647 ])
 648
 649 AC_DEFUN([LC_LUSTRE_VERSION_H],
 650 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 651         rm -f "$LUSTRE/include/linux/lustre_version.h"
 652 ],[
 653         touch "$LUSTRE/include/linux/lustre_version.h"
 654         if test x$enable_server = xyes ; then
 655                 AC_MSG_WARN([Unpatched kernel detected.])
 656                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
 657                 AC_MSG_WARN([disabling server build])
 658                 enable_server='no'
 659         fi
 660 ])
 661 ])
 662
 663 AC_DEFUN([LC_FUNC_SET_FS_PWD],
 664 [LB_CHECK_SYMBOL_EXPORT([set_fs_pwd],
 665 [fs/namespace.c],[
 666         AC_DEFINE(HAVE_SET_FS_PWD, 1, [set_fs_pwd is exported])
 667 ],[
 668 ])
 669 ])
 670
 671 #
 672 # LC_CAPA_CRYPTO
 673 #
 674 AC_DEFUN([LC_CAPA_CRYPTO],
 675 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 676         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 677 ])
 678 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 679         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 680 ])
 681 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 682         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 683 ])
 684 ])
 685
 686 AC_DEFUN([LC_SUNRPC_CACHE],
 687 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 688 LB_LINUX_TRY_COMPILE([
 689         #include <linux/sunrpc/cache.h>
 690 ],[
 691         struct cache_head ch;
 692         &ch.ref.refcount;
 693 ],[
 694         AC_MSG_RESULT([yes])
 695         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 696 ],[
 697         AC_MSG_RESULT([no])
 698 ])
 699 ])
 700
 701 AC_DEFUN([LC_CONFIG_SUNRPC],
 702 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 703                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 704  LC_SUNRPC_CACHE
 705 ])
 706
 707 #
 708 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 709 #
 710 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 711 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 712  AC_ARG_ENABLE([gss_keyring],
 713                [AC_HELP_STRING([--disable-gss-keyring],
 714                                [disable gss keyring backend])],
 715                [],[enable_gss_keyring='yes'])
 716  AC_MSG_RESULT([$enable_gss_keyring])
 717
 718  if test x$enable_gss_keyring != xno; then
 719         LB_LINUX_CONFIG_IM([KEYS],[],
 720                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 721
 722         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 723                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 724
 725         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 726                   [Define this if you enable gss keyring backend])
 727  fi
 728 ])
 729
 730 m4_pattern_allow(AC_KERBEROS_V5)
 731
 732 #
 733 # LC_CONFIG_GSS (default disabled)
 734 #
 735 # Build gss and related tools of Lustre. Currently both kernel and user space
 736 # parts are depend on linux platform.
 737 #
 738 AC_DEFUN([LC_CONFIG_GSS],
 739 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 740  AC_ARG_ENABLE([gss],
 741                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 742                [],[enable_gss='no'])
 743  AC_MSG_RESULT([$enable_gss])
 744
 745  if test x$enable_gss == xyes; then
 746         LC_CONFIG_GSS_KEYRING
 747         LC_CONFIG_SUNRPC
 748
 749         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 750                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 751         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 752                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 753         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 754                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 755         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 756                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 757         LB_LINUX_CONFIG_IM([CRYPTO_WP512],[],
 758                            [AC_MSG_WARN([kernel WP512 support is recommended by using GSS.])])
 759         LB_LINUX_CONFIG_IM([CRYPTO_ARC4],[],
 760                            [AC_MSG_WARN([kernel ARC4 support is recommended by using GSS.])])
 761         LB_LINUX_CONFIG_IM([CRYPTO_DES],[],
 762                            [AC_MSG_WARN([kernel DES support is recommended by using GSS.])])
 763         LB_LINUX_CONFIG_IM([CRYPTO_TWOFISH],[],
 764                            [AC_MSG_WARN([kernel TWOFISH support is recommended by using GSS.])])
 765         LB_LINUX_CONFIG_IM([CRYPTO_CAST6],[],
 766                            [AC_MSG_WARN([kernel CAST6 support is recommended by using GSS.])])
 767         dnl FIXME
 768         dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 769         dnl FIXME
 770         LB_LINUX_CONFIG_IM([CRYPTO_AES],[],
 771                            [AC_MSG_WARN([kernel AES support is recommended by using GSS.])])
 772
 773         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 774                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 775                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 776                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 777                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 778
 779         AC_SUBST(GSSAPI_LIBS)
 780
 781         AC_KERBEROS_V5
 782  fi
 783 ])
 784
 785 # LC_FUNC_MS_FLOCK_LOCK
 786 #
 787 # SLES9 kernel has MS_FLOCK_LOCK sb flag
 788 #
 789 AC_DEFUN([LC_FUNC_MS_FLOCK_LOCK],
 790 [AC_MSG_CHECKING([if kernel has MS_FLOCK_LOCK sb flag])
 791 LB_LINUX_TRY_COMPILE([
 792         #include <linux/fs.h>
 793 ],[
 794         int flags = MS_FLOCK_LOCK;
 795 ],[
 796         AC_DEFINE(HAVE_MS_FLOCK_LOCK, 1,
 797                 [kernel has MS_FLOCK_LOCK flag])
 798         AC_MSG_RESULT([yes])
 799 ],[
 800         AC_MSG_RESULT([no])
 801 ])
 802 ])
 803
 804 #
 805 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 806 #
 807 # SLES9 kernel has third arg can_sleep
 808 # in fs/locks.c: flock_lock_file_wait()
 809 #
 810 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 811 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 812 LB_LINUX_TRY_COMPILE([
 813         #include <linux/fs.h>
 814 ],[
 815         int cansleep;
 816         struct file *file;
 817         struct file_lock *file_lock;
 818         flock_lock_file_wait(file, file_lock, cansleep);
 819 ],[
 820         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 821                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 822         AC_MSG_RESULT([yes])
 823 ],[
 824         AC_MSG_RESULT([no])
 825 ])
 826 ])
 827
 828 #
 829 # LC_FUNC_F_OP_FLOCK
 830 #
 831 # rhel4.2 kernel has f_op->flock field
 832 #
 833 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 834 [AC_MSG_CHECKING([if struct file_operations has flock field])
 835 LB_LINUX_TRY_COMPILE([
 836         #include <linux/fs.h>
 837 ],[
 838         struct file_operations ll_file_operations_flock;
 839         ll_file_operations_flock.flock = NULL;
 840 ],[
 841         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 842                 [struct file_operations has flock field])
 843         AC_MSG_RESULT([yes])
 844 ],[
 845         AC_MSG_RESULT([no])
 846 ])
 847 ])
 848
 849 #
 850 # LC_TASK_PPTR
 851 #
 852 # task struct has p_pptr instead of parent
 853 #
 854 AC_DEFUN([LC_TASK_PPTR],
 855 [AC_MSG_CHECKING([task p_pptr found])
 856 LB_LINUX_TRY_COMPILE([
 857         #include <linux/sched.h>
 858 ],[
 859         struct task_struct *p;
 860
 861         p = p->p_pptr;
 862 ],[
 863         AC_MSG_RESULT([yes])
 864         AC_DEFINE(HAVE_TASK_PPTR, 1, [task p_pptr found])
 865 ],[
 866         AC_MSG_RESULT([no])
 867 ])
 868 ])
 869
 870 #
 871 # LC_FUNC_F_OP_FLOCK
 872 #
 873 # rhel4.2 kernel has f_op->flock field
 874 #
 875 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 876 [AC_MSG_CHECKING([if struct file_operations has flock field])
 877 LB_LINUX_TRY_COMPILE([
 878         #include <linux/fs.h>
 879 ],[
 880         struct file_operations ll_file_operations_flock;
 881         ll_file_operations_flock.flock = NULL;
 882 ],[
 883         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 884                 [struct file_operations has flock field])
 885         AC_MSG_RESULT([yes])
 886 ],[
 887         AC_MSG_RESULT([no])
 888 ])
 889 ])
 890
 891 # LC_INODE_I_MUTEX
 892 # after 2.6.15 inode have i_mutex intead of i_sem
 893 AC_DEFUN([LC_INODE_I_MUTEX],
 894 [AC_MSG_CHECKING([use inode have i_mutex ])
 895 LB_LINUX_TRY_COMPILE([
 896         #include <linux/mutex.h>
 897         #include <linux/fs.h>
 898         #undef i_mutex
 899 ],[
 900         struct inode i;
 901
 902         mutex_unlock(&i.i_mutex);
 903 ],[
 904         AC_MSG_RESULT(yes)
 905         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 906                 [after 2.6.15 inode have i_mutex intead of i_sem])
 907 ],[
 908         AC_MSG_RESULT(NO)
 909 ])
 910 ])
 911
 912 # LC_DQUOTOFF_MUTEX
 913 # after 2.6.17 dquote use mutex instead if semaphore
 914 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 915 [AC_MSG_CHECKING([use dqonoff_mutex])
 916 LB_LINUX_TRY_COMPILE([
 917         #include <linux/mutex.h>
 918         #include <linux/fs.h>
 919         #include <linux/quota.h>
 920 ],[
 921         struct quota_info dq;
 922
 923         mutex_unlock(&dq.dqonoff_mutex);
 924 ],[
 925         AC_MSG_RESULT(yes)
 926         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 927                 [after 2.6.17 dquote use mutex instead if semaphore])
 928 ],[
 929         AC_MSG_RESULT(NO)
 930 ])
 931 ])
 932
 933 #
 934 # LC_STATFS_DENTRY_PARAM
 935 # starting from 2.6.18 linux kernel uses dentry instead of
 936 # super_block for first vfs_statfs argument
 937 #
 938 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 939 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
 940 LB_LINUX_TRY_COMPILE([
 941         #include <linux/fs.h>
 942 ],[
 943         int vfs_statfs(struct dentry *, struct kstatfs *);
 944 ],[
 945         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 946                 [first parameter of vfs_statfs is dentry])
 947         AC_MSG_RESULT([yes])
 948 ],[
 949         AC_MSG_RESULT([no])
 950 ])
 951 ])
 952
 953 #
 954 # LC_VFS_KERN_MOUNT
 955 # starting from 2.6.18 kernel don't export do_kern_mount
 956 # and want to use vfs_kern_mount instead.
 957 #
 958 AC_DEFUN([LC_VFS_KERN_MOUNT],
 959 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
 960 LB_LINUX_TRY_COMPILE([
 961         #include <linux/mount.h>
 962 ],[
 963         vfs_kern_mount(NULL, 0, NULL, NULL);
 964 ],[
 965         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
 966                 [vfs_kern_mount exist in kernel])
 967         AC_MSG_RESULT([yes])
 968 ],[
 969         AC_MSG_RESULT([no])
 970 ])
 971 ])
 972
 973 #
 974 # LC_INVALIDATEPAGE_RETURN_INT
 975 # more 2.6 api changes.  return type for the invalidatepage
 976 # address_space_operation is 'void' in new kernels but 'int' in old
 977 #
 978 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
 979 [AC_MSG_CHECKING([invalidatepage has return int])
 980 LB_LINUX_TRY_COMPILE([
 981         #include <linux/buffer_head.h>
 982 ],[
 983         int rc = block_invalidatepage(NULL, 0);
 984 ],[
 985         AC_MSG_RESULT(yes)
 986         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
 987                 [Define if return type of invalidatepage should be int])
 988 ],[
 989         AC_MSG_RESULT(NO)
 990 ])
 991 ])
 992
 993 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 994 # more 2.6 API changes. 2.6.18 umount_begin has different parameters
 995 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 996 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 997 tmp_flags="$EXTRA_KCFLAGS"
 998 EXTRA_KCFLAGS="-Werror"
 999 LB_LINUX_TRY_COMPILE([
1000         #include <linux/fs.h>
1001
1002         struct vfsmount;
1003         static void cfg_umount_begin (struct vfsmount *v, int flags)
1004         {
1005                 ;
1006         }
1007
1008         static struct super_operations cfg_super_operations = {
1009                 .umount_begin   = cfg_umount_begin,
1010         };
1011 ],[
1012         cfg_super_operations.umount_begin(NULL,0);
1013 ],[
1014         AC_MSG_RESULT(yes)
1015         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
1016                 [Define umount_begin need second argument])
1017 ],[
1018         AC_MSG_RESULT(NO)
1019 ])
1020 EXTRA_KCFLAGS="$tmp_flags"
1021 ])
1022
1023 # 2.6.19 API changes
1024 # inode don't have i_blksize field
1025 AC_DEFUN([LC_INODE_BLKSIZE],
1026 [AC_MSG_CHECKING([inode has i_blksize field])
1027 LB_LINUX_TRY_COMPILE([
1028 #include <linux/fs.h>
1029 ],[
1030         struct inode i;
1031         i.i_blksize = 0;
1032 ],[
1033         AC_MSG_RESULT(yes)
1034         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1035                 [struct inode has i_blksize field])
1036 ],[
1037         AC_MSG_RESULT(NO)
1038 ])
1039 ])
1040
1041 # LC_VFS_READDIR_U64_INO
1042 # 2.6.19 use u64 for inode number instead of inode_t
1043 AC_DEFUN([LC_VFS_READDIR_U64_INO],
1044 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
1045 tmp_flags="$EXTRA_KCFLAGS"
1046 EXTRA_KCFLAGS="-Werror"
1047 LB_LINUX_TRY_COMPILE([
1048 #include <linux/fs.h>
1049         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
1050                       u64 ino, unsigned int d_type)
1051         {
1052                 return 0;
1053         }
1054 ],[
1055         filldir_t filter;
1056
1057         filter = fillonedir;
1058         return 1;
1059 ],[
1060         AC_MSG_RESULT(yes)
1061         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
1062                 [if vfs_readdir need 64bit inode number])
1063 ],[
1064         AC_MSG_RESULT(NO)
1065 ])
1066 EXTRA_KCFLAGS="$tmp_flags"
1067 ])
1068
1069 # LC_GENERIC_FILE_WRITE
1070 # 2.6.19 introduce do_sync_write instead of
1071 # generic_file_write
1072 AC_DEFUN([LC_GENERIC_FILE_WRITE],
1073 [AC_MSG_CHECKING([use generic_file_write])
1074 LB_LINUX_TRY_COMPILE([
1075         #include <linux/fs.h>
1076 ],[
1077         int result = generic_file_read(NULL, NULL, 0, 0);
1078 ],[
1079         AC_MSG_RESULT(yes)
1080         AC_DEFINE(HAVE_GENERIC_FILE_WRITE, 1,
1081                 [use generic_file_write])
1082 ],[
1083         AC_MSG_RESULT(NO)
1084 ])
1085 ])
1086
1087 # LC_GENERIC_FILE_READ
1088 # 2.6.19 need to use do_sync_read instead of
1089 # generic_file_read
1090 AC_DEFUN([LC_GENERIC_FILE_READ],
1091 [AC_MSG_CHECKING([use generic_file_read])
1092 LB_LINUX_TRY_COMPILE([
1093         #include <linux/fs.h>
1094 ],[
1095         int result = generic_file_read(NULL, NULL, 0, 0);
1096 ],[
1097         AC_MSG_RESULT(yes)
1098         AC_DEFINE(HAVE_GENERIC_FILE_READ, 1,
1099                 [use generic_file_read])
1100 ],[
1101         AC_MSG_RESULT(NO)
1102 ])
1103 ])
1104
1105 # LC_NR_PAGECACHE
1106 # 2.6.18 don't export nr_pagecahe
1107 AC_DEFUN([LC_NR_PAGECACHE],
1108 [AC_MSG_CHECKING([kernel export nr_pagecache])
1109 LB_LINUX_TRY_COMPILE([
1110         #include <linux/pagemap.h>
1111 ],[
1112         return atomic_read(&nr_pagecache);
1113 ],[
1114         AC_MSG_RESULT(yes)
1115         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
1116                 [is kernel export nr_pagecache])
1117 ],[
1118         AC_MSG_RESULT(NO)
1119 ])
1120 ])
1121
1122 # LC_CANCEL_DIRTY_PAGE
1123 # 2.6.20 introduse cancel_dirty_page instead of
1124 # clear_page_dirty.
1125 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1126 [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1127 LB_LINUX_TRY_COMPILE([
1128         #include <linux/page-flags.h>
1129 ],[
1130         cancel_dirty_page(NULL, 0);
1131 ],[
1132         AC_MSG_RESULT(yes)
1133         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1134                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1135 ],[
1136         AC_MSG_RESULT(NO)
1137 ])
1138 ])
1139
1140 #
1141 # LC_PAGE_CONSTANT
1142 #
1143 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1144 # it support constant page, which means the page won't be modified during the
1145 # IO.
1146 #
1147 AC_DEFUN([LC_PAGE_CONSTANT],
1148 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1149 LB_LINUX_TRY_COMPILE([
1150         #include <linux/page-flags.h>
1151 ],[
1152         #ifndef PG_constant
1153         #error "Have no raid5 zcopy patch"
1154         #endif
1155 ],[
1156         AC_MSG_RESULT(yes)
1157         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1158 ],[
1159         AC_MSG_RESULT(no);
1160 ])
1161 ])
1162
1163 # RHEL5 in FS-cache patch rename PG_checked flag
1164 # into PG_fs_misc
1165 AC_DEFUN([LC_PG_FS_MISC],
1166 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1167 LB_LINUX_TRY_COMPILE([
1168         #include <linux/page-flags.h>
1169 ],[
1170         #ifndef PG_fs_misc
1171         #error PG_fs_misc not defined in kernel
1172         #endif
1173 ],[
1174         AC_MSG_RESULT(yes)
1175         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1176                   [is kernel have PG_fs_misc])
1177 ],[
1178         AC_MSG_RESULT(NO)
1179 ])
1180 ])
1181
1182 # RHEL5 PageChecked and SetPageChecked defined
1183 AC_DEFUN([LC_PAGE_CHECKED],
1184 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1185 LB_LINUX_TRY_COMPILE([
1186         #include <linux/page-flags.h>
1187 ],[
1188         #ifndef PageChecked
1189         #error PageChecked not defined in kernel
1190         #endif
1191         #ifndef SetPageChecked
1192         #error SetPageChecked not defined in kernel
1193         #endif
1194 ],[
1195         AC_MSG_RESULT(yes)
1196         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1197                   [does kernel have PageChecked and SetPageChecked])
1198 ],[
1199         AC_MSG_RESULT(NO)
1200 ])
1201 ])
1202
1203 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
1204 [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
1205 [mm/truncate.c],[
1206 AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
1207             [kernel export truncate_complete_page])
1208 ],[
1209 ])
1210 ])
1211
1212 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
1213 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
1214 [fs/dcache.c],[
1215 AC_DEFINE(HAVE_D_REHASH_COND, 1,
1216             [d_rehash_cond is exported by the kernel])
1217 ],[
1218 ])
1219 ])
1220
1221 AC_DEFUN([LC_EXPORT___D_REHASH],
1222 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
1223 [fs/dcache.c],[
1224 AC_DEFINE(HAVE___D_REHASH, 1,
1225             [__d_rehash is exported by the kernel])
1226 ],[
1227 ])
1228 ])
1229
1230 AC_DEFUN([LC_EXPORT_D_MOVE_LOCKED],
1231 [LB_CHECK_SYMBOL_EXPORT([d_move_locked],
1232 [fs/dcache.c],[
1233 AC_DEFINE(HAVE_D_MOVE_LOCKED, 1,
1234             [d_move_locked is exported by the kernel])
1235 ],[
1236 ])
1237 ])
1238
1239 AC_DEFUN([LC_EXPORT___D_MOVE],
1240 [LB_CHECK_SYMBOL_EXPORT([__d_move],
1241 [fs/dcache.c],[
1242 AC_DEFINE(HAVE___D_MOVE, 1,
1243             [__d_move is exported by the kernel])
1244 ],[
1245 ])
1246 ])
1247
1248 # The actual symbol exported varies among architectures, so we need
1249 # to check many symbols (but only in the current architecture.)  No
1250 # matter what symbol is exported, the kernel #defines node_to_cpumask
1251 # to the appropriate function and that's what we use.
1252 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
1253          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
1254                                  [arch/$LINUX_ARCH/mm/numa.c],
1255                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1256                                             [node_to_cpumask is exported by
1257                                              the kernel])]) # x86_64
1258           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
1259                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1260                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1261                                             [node_to_cpumask is exported by
1262                                              the kernel])]) # ia64
1263           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
1264                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1265                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1266                                             [node_to_cpumask is exported by
1267                                              the kernel])]) # i386
1268           ])
1269
1270 # 2.6.22 lost second parameter for invalidate_bdev
1271 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1272 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1273 LB_LINUX_TRY_COMPILE([
1274         #include <linux/buffer_head.h>
1275 ],[
1276         invalidate_bdev(NULL,0);
1277 ],[
1278         AC_MSG_RESULT([yes])
1279         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1280                 [invalidate_bdev has second argument])
1281 ],[
1282         AC_MSG_RESULT([no])
1283 ])
1284 ])
1285
1286 # 2.6.23 have return type 'void' for unregister_blkdev
1287 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1288 [AC_MSG_CHECKING([if unregister_blkdev return int])
1289 LB_LINUX_TRY_COMPILE([
1290         #include <linux/fs.h>
1291 ],[
1292         int i = unregister_blkdev(0,NULL);
1293 ],[
1294         AC_MSG_RESULT([yes])
1295         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1296                 [unregister_blkdev return int])
1297 ],[
1298         AC_MSG_RESULT([no])
1299 ])
1300 ])
1301
1302 # 2.6.23 change .sendfile to .splice_read
1303 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1304 [AC_MSG_CHECKING([if kernel has .splice_read])
1305 LB_LINUX_TRY_COMPILE([
1306         #include <linux/fs.h>
1307 ],[
1308         struct file_operations file;
1309
1310         file.splice_read = NULL;
1311 ], [
1312         AC_MSG_RESULT([yes])
1313         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1314                 [kernel has .slice_read])
1315 ],[
1316         AC_MSG_RESULT([no])
1317 ])
1318 ])
1319
1320 # 2.6.23 extract nfs export related data into exportfs.h
1321 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1322 [
1323 tmpfl="$CFLAGS"
1324 CFLAGS="$CFLAGS -I$LINUX_OBJ/include"
1325 AC_CHECK_HEADERS([linux/exportfs.h])
1326 CFLAGS="$tmpfl"
1327 ])
1328
1329 #
1330 # LC_VFS_INTENT_PATCHES
1331 #
1332 # check if the kernel has the VFS intent patches
1333 AC_DEFUN([LC_VFS_INTENT_PATCHES],
1334 [AC_MSG_CHECKING([if the kernel has the VFS intent patches])
1335 LB_LINUX_TRY_COMPILE([
1336         #include <linux/fs.h>
1337         #include <linux/namei.h>
1338 ],[
1339         struct nameidata nd;
1340         struct lookup_intent *it;
1341
1342         it = &nd.intent;
1343         intent_init(it, IT_OPEN);
1344         it->d.lustre.it_disposition = 0;
1345         it->d.lustre.it_data = NULL;
1346 ],[
1347         AC_MSG_RESULT([yes])
1348         AC_DEFINE(HAVE_VFS_INTENT_PATCHES, 1, [VFS intent patches are applied])
1349 ],[
1350         AC_MSG_RESULT([no])
1351 ])
1352 ])
1353
1354 AC_DEFUN([LC_S_TIME_GRAN],
1355 [AC_MSG_CHECKING([if super block has s_time_gran member])
1356 LB_LINUX_TRY_COMPILE([
1357         #include <linux/fs.h>
1358 ],[
1359         struct super_block sb;
1360
1361         return sb.s_time_gran;
1362 ],[
1363         AC_MSG_RESULT([yes])
1364         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
1365 ],[
1366         AC_MSG_RESULT([no])
1367 ])
1368 ])
1369
1370 AC_DEFUN([LC_SB_TIME_GRAN],
1371 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
1372 LB_LINUX_TRY_COMPILE([
1373         #include <linux/fs.h>
1374 ],[
1375         return get_sb_time_gran(NULL);
1376 ],[
1377         AC_MSG_RESULT([yes])
1378         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
1379 ],[
1380         AC_MSG_RESULT([no])
1381 ])
1382 ])
1383
1384
1385 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
1386 AC_DEFUN([LC_RW_TREE_LOCK],
1387 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
1388 tmp_flags="$EXTRA_KCFLAGS"
1389 EXTRA_KCFLAGS="-Werror"
1390 LB_LINUX_TRY_COMPILE([
1391         #include <linux/fs.h>
1392 ],[
1393         struct address_space a;
1394
1395         write_lock(&a.tree_lock);
1396 ],[
1397         AC_MSG_RESULT([yes])
1398         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
1399 ],[
1400         AC_MSG_RESULT([no])
1401 ])
1402 EXTRA_KCFLAGS="$tmp_flags"
1403 ])
1404
1405 AC_DEFUN([LC_CONST_ACL_SIZE],
1406 [AC_MSG_CHECKING([calc acl size])
1407 tmp_flags="$CFLAGS"
1408 CFLAGS="$CFLAGS -I $LINUX_OBJ/include $EXTRA_KCFLAGS"
1409 AC_TRY_RUN([
1410 #define __KERNEL__
1411 #include <linux/autoconf.h>
1412 #include <linux/types.h>
1413 #undef __KERNEL__
1414 // block include
1415 #define __LINUX_POSIX_ACL_H
1416
1417 # ifdef CONFIG_FS_POSIX_ACL
1418 #  ifdef HAVE_XATTR_ACL
1419 #   include <linux/xattr_acl.h>
1420 #  endif
1421 #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
1422 #   include <linux/posix_acl_xattr.h>
1423 #  endif
1424 # endif
1425
1426 #include <lustre_acl.h>
1427
1428 #include <stdio.h>
1429
1430 int main(void)
1431 {
1432     int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
1433     FILE *f = fopen("acl.size","w+");
1434     fprintf(f,"%d", size);
1435     fclose(f);
1436
1437     return 0;
1438 }
1439
1440 ],[
1441         acl_size=`cat acl.size`
1442         AC_MSG_RESULT([ACL size $acl_size])
1443         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
1444 ],[
1445         AC_ERROR([ACL size can't computed])
1446 ])
1447 CFLAGS="$tmp_flags"
1448 ])
1449
1450 #
1451 # check for crypto API
1452 #
1453 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1454 [AC_MSG_CHECKING([if kernel has block cipher support])
1455 LB_LINUX_TRY_COMPILE([
1456         #include <linux/crypto.h>
1457 ],[
1458         int v = CRYPTO_ALG_TYPE_BLKCIPHER;
1459 ],[
1460         AC_MSG_RESULT([yes])
1461         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1462 ],[
1463         AC_MSG_RESULT([no])
1464 ])
1465 ])
1466
1467 #
1468 # check for FS_RENAME_DOES_D_MOVE flag
1469 #
1470 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1471 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1472 LB_LINUX_TRY_COMPILE([
1473         #include <linux/fs.h>
1474 ],[
1475         int v = FS_RENAME_DOES_D_MOVE;
1476 ],[
1477         AC_MSG_RESULT([yes])
1478         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1479 ],[
1480         AC_MSG_RESULT([no])
1481 ])
1482 ])
1483
1484 #
1485 # LC_PROG_LINUX
1486 #
1487 # Lustre linux kernel checks
1488 #
1489 AC_DEFUN([LC_PROG_LINUX],
1490          [LC_LUSTRE_VERSION_H
1491          if test x$enable_server = xyes ; then
1492              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
1493              LC_CONFIG_BACKINGFS
1494          fi
1495          LC_CONFIG_PINGER
1496          LC_CONFIG_CHECKSUM
1497          LC_CONFIG_LIBLUSTRE_RECOVERY
1498          LC_CONFIG_QUOTA
1499          LC_CONFIG_HEALTH_CHECK_WRITE
1500          LC_CONFIG_LRU_RESIZE
1501
1502          LC_TASK_PPTR
1503          # RHEL4 patches
1504          LC_EXPORT_TRUNCATE_COMPLETE
1505          LC_EXPORT_D_REHASH_COND
1506          LC_EXPORT___D_REHASH
1507          LC_EXPORT_D_MOVE_LOCKED
1508          LC_EXPORT___D_MOVE
1509          LC_EXPORT_NODE_TO_CPUMASK
1510
1511          LC_STRUCT_KIOBUF
1512          LC_FUNC_COND_RESCHED
1513          LC_FUNC_ZAP_PAGE_RANGE
1514          LC_FUNC_PDE
1515          LC_FUNC_DIRECT_IO
1516          LC_HEADER_MM_INLINE
1517          LC_STRUCT_INODE
1518          LC_FUNC_REGISTER_CACHE
1519          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1520          LC_FUNC_DEV_SET_RDONLY
1521          LC_FUNC_FILEMAP_FDATAWRITE
1522          LC_STRUCT_STATFS
1523          LC_FUNC_PAGE_MAPPED
1524          LC_STRUCT_FILE_OPS_UNLOCKED_IOCTL
1525          LC_FILEMAP_POPULATE
1526          LC_D_ADD_UNIQUE
1527          LC_BIT_SPINLOCK_H
1528
1529          LC_XATTR_ACL
1530          LC_POSIX_ACL_XATTR_H
1531          LC_CONST_ACL_SIZE
1532
1533          LC_STRUCT_INTENT_FILE
1534
1535          LC_FUNC_SET_FS_PWD
1536          LC_CAPA_CRYPTO
1537          LC_CONFIG_GSS
1538          LC_FUNC_MS_FLOCK_LOCK
1539          LC_FUNC_HAVE_CAN_SLEEP_ARG
1540          LC_FUNC_F_OP_FLOCK
1541          LC_QUOTA_READ
1542          LC_COOKIE_FOLLOW_LINK
1543          LC_FUNC_RCU
1544          LC_PERCPU_COUNTER
1545
1546          # does the kernel have VFS intent patches?
1547          LC_VFS_INTENT_PATCHES
1548
1549          # ~2.6.11
1550          LC_S_TIME_GRAN
1551          LC_SB_TIME_GRAN
1552
1553          # 2.6.12
1554          LC_RW_TREE_LOCK
1555
1556          # 2.6.15
1557          LC_INODE_I_MUTEX
1558
1559          # 2.6.16
1560          LC_SECURITY_PLUG  # for SLES10 SP2
1561
1562          # 2.6.17
1563          LC_DQUOTOFF_MUTEX
1564
1565          # 2.6.18
1566          LC_NR_PAGECACHE
1567          LC_STATFS_DENTRY_PARAM
1568          LC_VFS_KERN_MOUNT
1569          LC_INVALIDATEPAGE_RETURN_INT
1570          LC_UMOUNTBEGIN_HAS_VFSMOUNT
1571
1572          #2.6.18 + RHEL5 (fc6)
1573          LC_PG_FS_MISC
1574          LC_PAGE_CHECKED
1575
1576          # 2.6.19
1577          LC_INODE_BLKSIZE
1578          LC_VFS_READDIR_U64_INO
1579          LC_GENERIC_FILE_READ
1580          LC_GENERIC_FILE_WRITE
1581
1582          # 2.6.20
1583          LC_CANCEL_DIRTY_PAGE
1584
1585          # raid5-zerocopy patch
1586          LC_PAGE_CONSTANT
1587
1588          # 2.6.22
1589          LC_INVALIDATE_BDEV_2ARG
1590          LC_ASYNC_BLOCK_CIPHER
1591          LC_FS_RENAME_DOES_D_MOVE
1592          # 2.6.23
1593          LC_UNREGISTER_BLKDEV_RETURN_INT
1594          LC_KERNEL_SPLICE_READ
1595          LC_HAVE_EXPORTFS_H
1596 ])
1597
1598 #
1599 # LC_CONFIG_CLIENT_SERVER
1600 #
1601 # Build client/server sides of Lustre
1602 #
1603 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
1604 [AC_MSG_CHECKING([whether to build Lustre server support])
1605 AC_ARG_ENABLE([server],
1606         AC_HELP_STRING([--disable-server],
1607                         [disable Lustre server support]),
1608         [],[enable_server='yes'])
1609 AC_MSG_RESULT([$enable_server])
1610
1611 AC_MSG_CHECKING([whether to build Lustre client support])
1612 AC_ARG_ENABLE([client],
1613         AC_HELP_STRING([--disable-client],
1614                         [disable Lustre client support]),
1615         [],[enable_client='yes'])
1616 AC_MSG_RESULT([$enable_client])])
1617
1618 #
1619 # LC_CONFIG_LIBLUSTRE
1620 #
1621 # whether to build liblustre
1622 #
1623 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1624 [AC_MSG_CHECKING([whether to build Lustre library])
1625 AC_ARG_ENABLE([liblustre],
1626         AC_HELP_STRING([--disable-liblustre],
1627                         [disable building of Lustre library]),
1628         [],[enable_liblustre=$with_sysio])
1629 AC_MSG_RESULT([$enable_liblustre])
1630 # only build sysio if liblustre is built
1631 with_sysio="$enable_liblustre"
1632
1633 AC_MSG_CHECKING([whether to build liblustre tests])
1634 AC_ARG_ENABLE([liblustre-tests],
1635         AC_HELP_STRING([--enable-liblustre-tests],
1636                         [enable liblustre tests, if --disable-tests is used]),
1637         [],[enable_liblustre_tests=$enable_tests])
1638 if test x$enable_liblustre != xyes ; then
1639    enable_liblustre_tests='no'
1640 fi
1641 AC_MSG_RESULT([$enable_liblustre_tests])
1642
1643 AC_MSG_CHECKING([whether to enable liblustre acl])
1644 AC_ARG_ENABLE([liblustre-acl],
1645         AC_HELP_STRING([--disable-liblustre-acl],
1646                         [disable ACL support for liblustre]),
1647         [],[enable_liblustre_acl=yes])
1648 AC_MSG_RESULT([$enable_liblustre_acl])
1649 if test x$enable_liblustre_acl = xyes ; then
1650   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1651 fi
1652
1653 AC_MSG_CHECKING([whether to build mpitests])
1654 AC_ARG_ENABLE([mpitests],
1655         AC_HELP_STRING([--enable-mpitests],
1656                         [build liblustre mpi tests]),
1657         [],[enable_mpitests=no])
1658 AC_MSG_RESULT([$enable_mpitests])
1659
1660 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1661 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1662
1663 LC_CONFIG_PINGER
1664 LC_CONFIG_LIBLUSTRE_RECOVERY
1665 ])
1666
1667 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
1668 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
1669 AC_ARG_ENABLE([lru_resize],
1670         AC_HELP_STRING([--enable-lru-resize],
1671                         [enable lru resize support]),
1672         [],[enable_lru_resize='yes'])
1673 AC_MSG_RESULT([$enable_lru_resize])
1674 if test x$enable_lru_resize != xno; then
1675    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
1676 fi
1677 ])
1678
1679 #
1680 # LC_CONFIG_QUOTA
1681 #
1682 # whether to enable quota support
1683 #
1684 AC_DEFUN([LC_CONFIG_QUOTA],
1685 [AC_ARG_ENABLE([quota],
1686         AC_HELP_STRING([--enable-quota],
1687                         [enable quota support]),
1688         [],[enable_quota='default'])
1689 if test x$linux25 != xyes; then
1690         enable_quota='no'
1691 fi
1692 LB_LINUX_CONFIG([QUOTA],[
1693         if test x$enable_quota = xdefault; then
1694                 enable_quota='yes'
1695         fi
1696 ],[
1697         if test x$enable_quota = xdefault; then
1698                 enable_quota='no'
1699                 AC_MSG_WARN([quota is not enabled because the kernel lacks quota support])
1700         else
1701                 if test x$enable_quota = xyes; then
1702                         AC_MSG_ERROR([cannot enable quota because the kernel lacks quota support])
1703                 fi
1704         fi
1705 ])
1706 if test x$enable_quota != xno; then
1707         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
1708 fi
1709 ])
1710
1711 #
1712 # LC_CONFIG_SPLIT
1713 #
1714 # whether to enable split support
1715 #
1716 AC_DEFUN([LC_CONFIG_SPLIT],
1717 [AC_MSG_CHECKING([whether to enable split support])
1718 AC_ARG_ENABLE([split],
1719         AC_HELP_STRING([--enable-split],
1720                         [enable split support]),
1721         [],[enable_split='no'])
1722 AC_MSG_RESULT([$enable_split])
1723 if test x$enable_split != xno; then
1724    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1725 fi
1726 ])
1727
1728 AC_DEFUN([LC_QUOTA_READ],
1729 [AC_MSG_CHECKING([if kernel supports quota_read])
1730 LB_LINUX_TRY_COMPILE([
1731         #include <linux/fs.h>
1732 ],[
1733         struct super_operations sp;
1734         void *i = (void *)sp.quota_read;
1735 ],[
1736         AC_MSG_RESULT([yes])
1737         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
1738 ],[
1739         AC_MSG_RESULT([no])
1740 ])
1741 ])
1742
1743 #
1744 # LC_COOKIE_FOLLOW_LINK
1745 #
1746 # kernel 2.6.13+ ->follow_link returns a cookie
1747 #
1748
1749 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
1750 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
1751 LB_LINUX_TRY_COMPILE([
1752         #include <linux/fs.h>
1753         #include <linux/namei.h>
1754 ],[
1755         struct dentry dentry;
1756         struct nameidata nd;
1757
1758         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
1759 ],[
1760         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
1761         AC_MSG_RESULT([yes])
1762 ],[
1763         AC_MSG_RESULT([no])
1764 ])
1765 ])
1766
1767 #
1768 # LC_FUNC_RCU
1769 #
1770 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
1771 # call_rcu takes three parameters.
1772 #
1773 AC_DEFUN([LC_FUNC_RCU],
1774 [AC_MSG_CHECKING([if kernel have RCU supported])
1775 LB_LINUX_TRY_COMPILE([
1776         #include <linux/rcupdate.h>
1777 ],[],[
1778         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
1779         AC_MSG_RESULT([yes])
1780
1781         AC_MSG_CHECKING([if call_rcu takes three parameters])
1782         LB_LINUX_TRY_COMPILE([
1783                 #include <linux/rcupdate.h>
1784         ],[
1785                 struct rcu_head rh;
1786                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
1787         ],[
1788                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
1789                 AC_MSG_RESULT([yes])
1790         ],[
1791                 AC_MSG_RESULT([no])
1792         ])
1793 ],[
1794         AC_MSG_RESULT([no])
1795 ])
1796 ])
1797
1798 # LC_SECURITY_PLUG  # for SLES10 SP2
1799 # check security plug in sles10 sp2 kernel
1800 AC_DEFUN([LC_SECURITY_PLUG],
1801 [AC_MSG_CHECKING([If kernel has security plug support])
1802 LB_LINUX_TRY_COMPILE([
1803         #include <linux/fs.h>
1804 ],[
1805         struct dentry   *dentry;
1806         struct vfsmount *mnt;
1807         struct iattr    *iattr;
1808
1809         notify_change(dentry, mnt, iattr);
1810 ],[
1811         AC_MSG_RESULT(yes)
1812         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
1813                 [SLES10 SP2 use extra parameter in vfs])
1814 ],[
1815         AC_MSG_RESULT(NO)
1816 ])
1817 ])
1818
1819 AC_DEFUN([LC_PERCPU_COUNTER],
1820 [AC_MSG_CHECKING([if have struct percpu_counter defined])
1821 LB_LINUX_TRY_COMPILE([
1822         #include <linux/percpu_counter.h>
1823 ],[],[
1824         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
1825         AC_MSG_RESULT([yes])
1826
1827         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
1828         LB_LINUX_TRY_COMPILE([
1829                 #include <linux/percpu_counter.h>
1830         ],[
1831                 struct percpu_counter c;
1832                 percpu_counter_init(&c, 0);
1833         ],[
1834                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
1835                                                    arguments])
1836                 AC_MSG_RESULT([yes])
1837         ],[
1838                 AC_MSG_RESULT([no])
1839         ])
1840 ],[
1841         AC_MSG_RESULT([no])
1842 ])
1843 ])
1844
1845 #
1846 # LC_CONFIGURE
1847 #
1848 # other configure checks
1849 #
1850 AC_DEFUN([LC_CONFIGURE],
1851 [LC_CONFIG_OBD_BUFFER_SIZE
1852
1853 # include/liblustre.h
1854 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1855
1856 # liblustre/llite_lib.h
1857 AC_CHECK_HEADERS([xtio.h file.h])
1858
1859 # liblustre/dir.c
1860 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1861
1862 # liblustre/lutil.c
1863 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1864 AC_CHECK_FUNCS([inet_ntoa])
1865
1866 # libsysio/src/readlink.c
1867 LC_READLINK_SSIZE_T
1868
1869 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
1870 AC_CHECK_HEADERS([linux/random.h], [], [],
1871                  [#ifdef HAVE_LINUX_TYPES_H
1872                   # include <linux/types.h>
1873                   #endif
1874                  ])
1875
1876 # utils/llverfs.c
1877 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1878
1879 # check for -lz support
1880 ZLIB=""
1881 AC_CHECK_LIB([z],
1882              [adler32],
1883              [AC_CHECK_HEADERS([zlib.h],
1884                                [ZLIB="-lz"
1885                                 AC_DEFINE([HAVE_ADLER], 1,
1886                                           [support alder32 checksum type])],
1887                                [AC_MSG_WARN([No zlib-devel package found,
1888                                              unable to use adler32 checksum])])],
1889              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
1890 )
1891 AC_SUBST(ZLIB)
1892
1893 # Super safe df
1894 AC_ARG_ENABLE([mindf],
1895       AC_HELP_STRING([--enable-mindf],
1896                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1897       [],[])
1898 if test "$enable_mindf" = "yes" ;  then
1899       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1900 fi
1901
1902 AC_ARG_ENABLE([fail_alloc],
1903         AC_HELP_STRING([--disable-fail-alloc],
1904                 [disable randomly alloc failure]),
1905         [],[enable_fail_alloc=yes])
1906 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1907 AC_MSG_RESULT([$enable_fail_alloc])
1908 if test x$enable_fail_alloc != xno ; then
1909         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1910 fi
1911
1912 ])
1913
1914 #
1915 # LC_CONDITIONALS
1916 #
1917 # AM_CONDITIONALS for lustre
1918 #
1919 AC_DEFUN([LC_CONDITIONALS],
1920 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1921 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
1922 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1923 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1924 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1925 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1926 AM_CONDITIONAL(QUOTA, test x$enable_quota = xyes)
1927 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1928 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1929 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1930 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1931 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1932 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1933 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1934 ])
1935
1936 #
1937 # LC_CONFIG_FILES
1938 #
1939 # files that should be generated with AC_OUTPUT
1940 #
1941 AC_DEFUN([LC_CONFIG_FILES],
1942 [AC_CONFIG_FILES([
1943 lustre/Makefile
1944 lustre/autoMakefile
1945 lustre/autoconf/Makefile
1946 lustre/contrib/Makefile
1947 lustre/doc/Makefile
1948 lustre/include/Makefile
1949 lustre/include/lustre_ver.h
1950 lustre/include/linux/Makefile
1951 lustre/include/lustre/Makefile
1952 lustre/kernel_patches/targets/2.6-vanilla.target
1953 lustre/kernel_patches/targets/2.6-rhel4.target
1954 lustre/kernel_patches/targets/2.6-rhel5.target
1955 lustre/kernel_patches/targets/2.6-fc5.target
1956 lustre/kernel_patches/targets/2.6-patchless.target
1957 lustre/kernel_patches/targets/2.6-sles10.target
1958 lustre/ldlm/Makefile
1959 lustre/fid/Makefile
1960 lustre/fid/autoMakefile
1961 lustre/liblustre/Makefile
1962 lustre/liblustre/tests/Makefile
1963 lustre/llite/Makefile
1964 lustre/llite/autoMakefile
1965 lustre/lov/Makefile
1966 lustre/lov/autoMakefile
1967 lustre/lvfs/Makefile
1968 lustre/lvfs/autoMakefile
1969 lustre/mdc/Makefile
1970 lustre/mdc/autoMakefile
1971 lustre/lmv/Makefile
1972 lustre/lmv/autoMakefile
1973 lustre/mds/Makefile
1974 lustre/mds/autoMakefile
1975 lustre/mdt/Makefile
1976 lustre/mdt/autoMakefile
1977 lustre/cmm/Makefile
1978 lustre/cmm/autoMakefile
1979 lustre/mdd/Makefile
1980 lustre/mdd/autoMakefile
1981 lustre/fld/Makefile
1982 lustre/fld/autoMakefile
1983 lustre/obdclass/Makefile
1984 lustre/obdclass/autoMakefile
1985 lustre/obdclass/linux/Makefile
1986 lustre/obdecho/Makefile
1987 lustre/obdecho/autoMakefile
1988 lustre/obdfilter/Makefile
1989 lustre/obdfilter/autoMakefile
1990 lustre/osc/Makefile
1991 lustre/osc/autoMakefile
1992 lustre/ost/Makefile
1993 lustre/ost/autoMakefile
1994 lustre/osd/Makefile
1995 lustre/osd/autoMakefile
1996 lustre/mgc/Makefile
1997 lustre/mgc/autoMakefile
1998 lustre/mgs/Makefile
1999 lustre/mgs/autoMakefile
2000 lustre/ptlrpc/Makefile
2001 lustre/ptlrpc/autoMakefile
2002 lustre/ptlrpc/gss/Makefile
2003 lustre/ptlrpc/gss/autoMakefile
2004 lustre/quota/Makefile
2005 lustre/quota/autoMakefile
2006 lustre/scripts/Makefile
2007 lustre/scripts/version_tag.pl
2008 lustre/tests/Makefile
2009 lustre/utils/Makefile
2010 lustre/utils/gss/Makefile
2011 ])
2012 case $lb_target_os in
2013         darwin)
2014                 AC_CONFIG_FILES([ lustre/obdclass/darwin/Makefile ])
2015                 ;;
2016 esac
2017
2018 ])