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 ])
  11
  12 #
  13 # LC_PATH_DEFAULTS
  14 #
  15 # lustre specific paths
  16 #
  17 AC_DEFUN([LC_PATH_DEFAULTS],
  18 [# ptlrpc kernel build requires this
  19 LUSTRE="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ])
  32
  33 #
  34 # LC_TARGET_SUPPORTED
  35 #
  36 # is the target os supported?
  37 #
  38 AC_DEFUN([LC_TARGET_SUPPORTED],
  39 [case $target_os in
  40         linux* | darwin*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ])
  48
  49 #
  50 # LC_CONFIG_EXT3
  51 #
  52 # that ext3 is enabled in the kernel
  53 #
  54 AC_DEFUN([LC_CONFIG_EXT3],
  55 [LB_LINUX_CONFIG([EXT3_FS],[],[
  56         LB_LINUX_CONFIG([EXT3_FS_MODULE],[],[$2])
  57 ])
  58 LB_LINUX_CONFIG([EXT3_FS_XATTR],[$1],[$3])
  59 ])
  60
  61 #
  62 # LC_FSHOOKS
  63 #
  64 # If we have (and can build) fshooks.h
  65 #
  66 AC_DEFUN([LC_FSHOOKS],
  67 [LB_CHECK_FILE([$LINUX/include/linux/fshooks.h],[
  68         AC_MSG_CHECKING([if fshooks.h can be compiled])
  69         LB_LINUX_TRY_COMPILE([
  70                 #include <linux/fshooks.h>
  71         ],[],[
  72                 AC_MSG_RESULT([yes])
  73         ],[
  74                 AC_MSG_RESULT([no])
  75                 AC_MSG_WARN([You might have better luck with gcc 3.3.x.])
  76                 AC_MSG_WARN([You can set CC=gcc33 before running configure.])
  77                 AC_MSG_ERROR([Your compiler cannot build fshooks.h.])
  78         ])
  79 $1
  80 ],[
  81 $2
  82 ])
  83 ])
  84
  85 #
  86 # LC_STRUCT_KIOBUF
  87 #
  88 # rh 2.4.18 has iobuf->dovary, but other kernels do not
  89 #
  90 AC_DEFUN([LC_STRUCT_KIOBUF],
  91 [AC_MSG_CHECKING([if struct kiobuf has a dovary field])
  92 LB_LINUX_TRY_COMPILE([
  93         #include <linux/iobuf.h>
  94 ],[
  95         struct kiobuf iobuf;
  96         iobuf.dovary = 1;
  97 ],[
  98         AC_MSG_RESULT([yes])
  99         AC_DEFINE(HAVE_KIOBUF_DOVARY, 1, [struct kiobuf has a dovary field])
 100 ],[
 101         AC_MSG_RESULT([no])
 102 ])
 103 ])
 104
 105 #
 106 # LC_FUNC_COND_RESCHED
 107 #
 108 # cond_resched() was introduced in 2.4.20
 109 #
 110 AC_DEFUN([LC_FUNC_COND_RESCHED],
 111 [AC_MSG_CHECKING([if kernel offers cond_resched])
 112 LB_LINUX_TRY_COMPILE([
 113         #include <linux/sched.h>
 114 ],[
 115         cond_resched();
 116 ],[
 117         AC_MSG_RESULT([yes])
 118         AC_DEFINE(HAVE_COND_RESCHED, 1, [cond_resched found])
 119 ],[
 120         AC_MSG_RESULT([no])
 121 ])
 122 ])
 123
 124 #
 125 # LC_FUNC_ZAP_PAGE_RANGE
 126 #
 127 # if zap_page_range() takes a vma arg
 128 #
 129 AC_DEFUN([LC_FUNC_ZAP_PAGE_RANGE],
 130 [AC_MSG_CHECKING([if zap_page_range with vma parameter])
 131 ZAP_PAGE_RANGE_VMA="`grep -c 'zap_page_range.*struct vm_area_struct' $LINUX/include/linux/mm.h`"
 132 if test "$ZAP_PAGE_RANGE_VMA" != 0 ; then
 133         AC_DEFINE(ZAP_PAGE_RANGE_VMA, 1, [zap_page_range with vma parameter])
 134         AC_MSG_RESULT([yes])
 135 else
 136         AC_MSG_RESULT([no])
 137 fi
 138 ])
 139
 140 #
 141 # LC_FUNC_PDE
 142 #
 143 # if proc_fs.h defines PDE()
 144 #
 145 AC_DEFUN([LC_FUNC_PDE],
 146 [AC_MSG_CHECKING([if kernel defines PDE])
 147 HAVE_PDE="`grep -c 'proc_dir_entry..PDE' $LINUX/include/linux/proc_fs.h`"
 148 if test "$HAVE_PDE" != 0 ; then
 149         AC_DEFINE(HAVE_PDE, 1, [the kernel defines PDE])
 150         AC_MSG_RESULT([yes])
 151 else
 152         AC_MSG_RESULT([no])
 153 fi
 154 ])
 155
 156 #
 157 # LC_FUNC_FILEMAP_FDATASYNC
 158 #
 159 # if filemap_fdatasync() exists
 160 #
 161 AC_DEFUN([LC_FUNC_FILEMAP_FDATAWRITE],
 162 [AC_MSG_CHECKING([whether filemap_fdatawrite() is defined])
 163 LB_LINUX_TRY_COMPILE([
 164         #include <linux/fs.h>
 165 ],[
 166         int (*foo)(struct address_space *)= filemap_fdatawrite;
 167 ],[
 168         AC_MSG_RESULT([yes])
 169         AC_DEFINE(HAVE_FILEMAP_FDATAWRITE, 1, [filemap_fdatawrite() found])
 170 ],[
 171         AC_MSG_RESULT([no])
 172 ])
 173 ])
 174
 175 #
 176 # LC_FUNC_DIRECT_IO
 177 #
 178 # if direct_IO takes a struct file argument
 179 #
 180 AC_DEFUN([LC_FUNC_DIRECT_IO],
 181 [AC_MSG_CHECKING([if kernel passes struct file to direct_IO])
 182 HAVE_DIO_FILE="`grep -c 'direct_IO.*struct file' $LINUX/include/linux/fs.h`"
 183 if test "$HAVE_DIO_FILE" != 0 ; then
 184         AC_DEFINE(HAVE_DIO_FILE, 1, [the kernel passes struct file to direct_IO])
 185         AC_MSG_RESULT(yes)
 186 else
 187         AC_MSG_RESULT(no)
 188 fi
 189 ])
 190
 191 #
 192 # LC_HEADER_MM_INLINE
 193 #
 194 # RHEL kernels define page_count in mm_inline.h
 195 #
 196 AC_DEFUN([LC_HEADER_MM_INLINE],
 197 [AC_MSG_CHECKING([if kernel has mm_inline.h header])
 198 LB_LINUX_TRY_COMPILE([
 199         #include <linux/mm_inline.h>
 200 ],[
 201         #ifndef page_count
 202         #error mm_inline.h does not define page_count
 203         #endif
 204 ],[
 205         AC_MSG_RESULT([yes])
 206         AC_DEFINE(HAVE_MM_INLINE, 1, [mm_inline found])
 207 ],[
 208         AC_MSG_RESULT([no])
 209 ])
 210 ])
 211
 212 #
 213 # LC_STRUCT_INODE
 214 #
 215 # if inode->i_alloc_sem exists
 216 #
 217 AC_DEFUN([LC_STRUCT_INODE],
 218 [AC_MSG_CHECKING([if struct inode has i_alloc_sem])
 219 LB_LINUX_TRY_COMPILE([
 220         #include <linux/fs.h>
 221         #include <linux/version.h>
 222 ],[
 223         #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,24))
 224         #error "down_read_trylock broken before 2.4.24"
 225         #endif
 226         struct inode i;
 227         return (char *)&i.i_alloc_sem - (char *)&i;
 228 ],[
 229         AC_MSG_RESULT([yes])
 230         AC_DEFINE(HAVE_I_ALLOC_SEM, 1, [struct inode has i_alloc_sem])
 231 ],[
 232         AC_MSG_RESULT([no])
 233 ])
 234 ])
 235
 236 #
 237 # LC_FUNC_REGISTER_CACHE
 238 #
 239 # if register_cache() is defined by kernel
 240 #
 241 AC_DEFUN([LC_FUNC_REGISTER_CACHE],
 242 [AC_MSG_CHECKING([if kernel defines register_cache()])
 243 LB_LINUX_TRY_COMPILE([
 244         #include <linux/list.h>
 245         #include <linux/cache_def.h>
 246 ],[
 247         struct cache_definition cache;
 248 ],[
 249         AC_MSG_RESULT([yes])
 250         AC_DEFINE(HAVE_REGISTER_CACHE, 1, [register_cache found])
 251         AC_MSG_CHECKING([if kernel expects return from cache shrink function])
 252         HAVE_CACHE_RETURN_INT="`grep -c 'int.*shrink' $LINUX/include/linux/cache_def.h`"
 253         if test "$HAVE_CACHE_RETURN_INT" != 0 ; then
 254                 AC_DEFINE(HAVE_CACHE_RETURN_INT, 1, [kernel expects return from shrink_cache])
 255                 AC_MSG_RESULT(yes)
 256         else
 257                 AC_MSG_RESULT(no)
 258         fi
 259 ],[
 260         AC_MSG_RESULT([no])
 261 ])
 262 ])
 263
 264 #
 265 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
 266 #
 267 # check for our patched grab_cache_page_nowait_gfp() function
 268 #
 269 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
 270 [AC_MSG_CHECKING([if kernel defines grab_cache_page_nowait_gfp()])
 271 HAVE_GCPN_GFP="`grep -c 'grab_cache_page_nowait_gfp' $LINUX/include/linux/pagemap.h`"
 272 if test "$HAVE_GCPN_GFP" != 0 ; then
 273         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
 274                 [kernel has grab_cache_page_nowait_gfp()])
 275         AC_MSG_RESULT(yes)
 276 else
 277         AC_MSG_RESULT(no)
 278 fi
 279 ])
 280
 281 #
 282 # LC_FUNC_DEV_SET_RDONLY
 283 #
 284 # check for the old-style dev_set_rdonly which took an extra "devno" param
 285 # and can only set a single device to discard writes at one time
 286 #
 287 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
 288 [AC_MSG_CHECKING([if kernel has new dev_set_rdonly])
 289 LB_LINUX_TRY_COMPILE([
 290         #include <linux/fs.h>
 291 ],[
 292         #ifndef HAVE_CLEAR_RDONLY_ON_PUT
 293         #error needs to be patched by lustre kernel patches from Lustre version 1.4.3 or above.
 294         #endif
 295 ],[
 296         AC_MSG_RESULT([yes])
 297         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel has new dev_set_rdonly])
 298 ],[
 299         AC_MSG_RESULT([no, Linux kernel source needs to be patches by lustre
 300 kernel patches from Lustre version 1.4.3 or above.])
 301 ])
 302 ])
 303
 304 #
 305 # LC_CONFIG_BACKINGFS
 306 #
 307 # setup, check the backing filesystem
 308 #
 309 AC_DEFUN([LC_CONFIG_BACKINGFS],
 310 [
 311 BACKINGFS="ldiskfs"
 312
 313 if test x$with_ldiskfs = xno ; then
 314         BACKINGFS="ext3"
 315
 316         if test x$linux25$enable_server = xyesyes ; then
 317                 AC_MSG_ERROR([ldiskfs is required for 2.6-based servers.])
 318         fi
 319
 320         # --- Check that ext3 and ext3 xattr are enabled in the kernel
 321         LC_CONFIG_EXT3([],[
 322                 AC_MSG_ERROR([Lustre requires that ext3 is enabled in the kernel])
 323         ],[
 324                 AC_MSG_WARN([Lustre requires that extended attributes for ext3 are enabled in the kernel])
 325                 AC_MSG_WARN([This build may fail.])
 326         ])
 327 else
 328         # ldiskfs is enabled
 329         LB_DEFINE_LDISKFS_OPTIONS
 330 fi #ldiskfs
 331
 332 AC_MSG_CHECKING([which backing filesystem to use])
 333 AC_MSG_RESULT([$BACKINGFS])
 334 AC_SUBST(BACKINGFS)
 335 ])
 336
 337 #
 338 # LC_CONFIG_PINGER
 339 #
 340 # the pinger is temporary, until we have the recovery node in place
 341 #
 342 AC_DEFUN([LC_CONFIG_PINGER],
 343 [AC_MSG_CHECKING([whether to enable pinger support])
 344 AC_ARG_ENABLE([pinger],
 345         AC_HELP_STRING([--disable-pinger],
 346                         [disable recovery pinger support]),
 347         [],[enable_pinger='yes'])
 348 AC_MSG_RESULT([$enable_pinger])
 349 if test x$enable_pinger != xno ; then
 350   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 351 fi
 352 ])
 353
 354 #
 355 # LC_CONFIG_CHECKSUM
 356 #
 357 # do checksum of bulk data between client and OST
 358 #
 359 AC_DEFUN([LC_CONFIG_CHECKSUM],
 360 [AC_MSG_CHECKING([whether to enable data checksum support])
 361 AC_ARG_ENABLE([checksum],
 362        AC_HELP_STRING([--disable-checksum],
 363                        [disable data checksum support]),
 364        [],[enable_checksum='yes'])
 365 AC_MSG_RESULT([$enable_checksum])
 366 if test x$enable_checksum != xno ; then
 367   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 368 fi
 369 ])
 370
 371 #
 372 # LC_CONFIG_HEALTH_CHECK_WRITE
 373 #
 374 # Turn on the actual write to the disk
 375 #
 376 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 377 [AC_MSG_CHECKING([whether to enable a write with the health check])
 378 AC_ARG_ENABLE([health-write],
 379         AC_HELP_STRING([--enable-health-write],
 380                         [enable disk writes when doing health check]),
 381         [],[enable_health_write='no'])
 382 AC_MSG_RESULT([$enable_health_write])
 383 if test x$enable_health_write == xyes ; then
 384   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 385 fi
 386 ])
 387
 388 #
 389 # LC_CONFIG_LIBLUSTRE_RECOVERY
 390 #
 391 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 392 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 393 AC_ARG_ENABLE([liblustre-recovery],
 394         AC_HELP_STRING([--disable-liblustre-recovery],
 395                         [disable liblustre recovery support]),
 396         [],[enable_liblustre_recovery='yes'])
 397 AC_MSG_RESULT([$enable_liblustre_recovery])
 398 if test x$enable_liblustre_recovery != xno ; then
 399   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 400 fi
 401 ])
 402
 403 #
 404 # LC_CONFIG_OBD_BUFFER_SIZE
 405 #
 406 # the maximum buffer size of lctl ioctls
 407 #
 408 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
 409 [AC_MSG_CHECKING([maximum OBD ioctl size])
 410 AC_ARG_WITH([obd-buffer-size],
 411         AC_HELP_STRING([--with-obd-buffer-size=[size]],
 412                         [set lctl ioctl maximum bytes (default=8192)]),
 413         [
 414                 OBD_BUFFER_SIZE=$with_obd_buffer_size
 415         ],[
 416                 OBD_BUFFER_SIZE=8192
 417         ])
 418 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
 419 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
 420 ])
 421
 422 #
 423 # LC_STRUCT_STATFS
 424 #
 425 # AIX does not have statfs.f_namelen
 426 #
 427 AC_DEFUN([LC_STRUCT_STATFS],
 428 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
 429 LB_LINUX_TRY_COMPILE([
 430         #include <linux/vfs.h>
 431 ],[
 432         struct statfs sfs;
 433         sfs.f_namelen = 1;
 434 ],[
 435         AC_MSG_RESULT([yes])
 436         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
 437 ],[
 438         AC_MSG_RESULT([no])
 439 ])
 440 ])
 441
 442 #
 443 # LC_READLINK_SSIZE_T
 444 #
 445 AC_DEFUN([LC_READLINK_SSIZE_T],
 446 [AC_MSG_CHECKING([if readlink returns ssize_t])
 447 AC_TRY_COMPILE([
 448         #include <unistd.h>
 449 ],[
 450         ssize_t readlink(const char *, char *, size_t);
 451 ],[
 452         AC_MSG_RESULT([yes])
 453         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
 454 ],[
 455         AC_MSG_RESULT([no])
 456 ])
 457 ])
 458
 459 AC_DEFUN([LC_FUNC_PAGE_MAPPED],
 460 [AC_MSG_CHECKING([if kernel offers page_mapped])
 461 LB_LINUX_TRY_COMPILE([
 462         #include <linux/mm.h>
 463 ],[
 464         page_mapped(NULL);
 465 ],[
 466         AC_MSG_RESULT([yes])
 467         AC_DEFINE(HAVE_PAGE_MAPPED, 1, [page_mapped found])
 468 ],[
 469         AC_MSG_RESULT([no])
 470 ])
 471 ])
 472
 473 AC_DEFUN([LC_STRUCT_FILE_OPS_UNLOCKED_IOCTL],
 474 [AC_MSG_CHECKING([if struct file_operations has an unlocked_ioctl field])
 475 LB_LINUX_TRY_COMPILE([
 476         #include <linux/fs.h>
 477 ],[
 478         struct file_operations fops;
 479         &fops.unlocked_ioctl;
 480 ],[
 481         AC_MSG_RESULT([yes])
 482         AC_DEFINE(HAVE_UNLOCKED_IOCTL, 1, [struct file_operations has an unlock ed_ioctl field])
 483 ],[
 484         AC_MSG_RESULT([no])
 485 ])
 486 ])
 487
 488 AC_DEFUN([LC_FILEMAP_POPULATE],
 489 [AC_MSG_CHECKING([for exported filemap_populate])
 490 LB_LINUX_TRY_COMPILE([
 491         #include <asm/page.h>
 492         #include <linux/mm.h>
 493 ],[
 494         filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 495 ],[
 496         AC_MSG_RESULT([yes])
 497         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 498 ],[
 499         AC_MSG_RESULT([no])
 500 ])
 501 ])
 502
 503 AC_DEFUN([LC_D_ADD_UNIQUE],
 504 [AC_MSG_CHECKING([for d_add_unique])
 505 LB_LINUX_TRY_COMPILE([
 506         #include <linux/dcache.h>
 507 ],[
 508        d_add_unique(NULL, NULL);
 509 ],[
 510         AC_MSG_RESULT([yes])
 511         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
 512 ],[
 513         AC_MSG_RESULT([no])
 514 ])
 515 ])
 516
 517 AC_DEFUN([LC_BIT_SPINLOCK_H],
 518 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 519         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 520         LB_LINUX_TRY_COMPILE([
 521                 #include <asm/processor.h>
 522                 #include <linux/spinlock.h>
 523                 #include <linux/bit_spinlock.h>
 524         ],[],[
 525                 AC_MSG_RESULT([yes])
 526                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 527         ],[
 528                 AC_MSG_RESULT([no])
 529         ])
 530 ],
 531 [])
 532 ])
 533
 534 #
 535 # LC_POSIX_ACL_XATTR
 536 #
 537 # If we have xattr_acl.h
 538 #
 539 AC_DEFUN([LC_XATTR_ACL],
 540 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
 541         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 542         LB_LINUX_TRY_COMPILE([
 543                 #include <linux/xattr_acl.h>
 544         ],[],[
 545                 AC_MSG_RESULT([yes])
 546                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 547         ],[
 548                 AC_MSG_RESULT([no])
 549         ])
 550 ],
 551 [])
 552 ])
 553
 554 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 555 [AC_MSG_CHECKING([if struct open_intent has a file field])
 556 LB_LINUX_TRY_COMPILE([
 557         #include <linux/fs.h>
 558         #include <linux/namei.h>
 559 ],[
 560         struct open_intent intent;
 561         &intent.file;
 562 ],[
 563         AC_MSG_RESULT([yes])
 564         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 565 ],[
 566         AC_MSG_RESULT([no])
 567 ])
 568 ])
 569
 570
 571 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
 572 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
 573         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
 574         LB_LINUX_TRY_COMPILE([
 575                 #include <linux/posix_acl_xattr.h>
 576         ],[],[
 577                 AC_MSG_RESULT([yes])
 578                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 579
 580         ],[
 581                 AC_MSG_RESULT([no])
 582         ])
 583 $1
 584 ],[
 585 AC_MSG_RESULT([no])
 586 ])
 587 ])
 588
 589 #
 590 # LC_EXPORT___IGET
 591 # starting from 2.6.19 linux kernel exports __iget()
 592 #
 593 AC_DEFUN([LC_EXPORT___IGET],
 594 [LB_CHECK_SYMBOL_EXPORT([__iget],
 595 [fs/inode.c],[
 596         AC_DEFINE(HAVE_EXPORT___IGET, 1, [kernel exports __iget])
 597 ],[
 598 ])
 599 ])
 600
 601
 602 AC_DEFUN([LC_LUSTRE_VERSION_H],
 603 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 604         rm -f "$LUSTRE/include/linux/lustre_version.h"
 605 ],[
 606         touch "$LUSTRE/include/linux/lustre_version.h"
 607         if test x$enable_server = xyes ; then
 608                 AC_MSG_WARN([Unpatched kernel detected.])
 609                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
 610                 AC_MSG_WARN([disabling server build])
 611                 enable_server='no'
 612         fi
 613 ])
 614 ])
 615
 616 AC_DEFUN([LC_FUNC_SET_FS_PWD],
 617 [LB_CHECK_SYMBOL_EXPORT([set_fs_pwd],
 618 [fs/namespace.c],[
 619         AC_DEFINE(HAVE_SET_FS_PWD, 1, [set_fs_pwd is exported])
 620 ],[
 621 ])
 622 ])
 623
 624
 625 #
 626 # LC_FUNC_MS_FLOCK_LOCK
 627 #
 628 # SLES9 kernel has MS_FLOCK_LOCK sb flag
 629 #
 630 AC_DEFUN([LC_FUNC_MS_FLOCK_LOCK],
 631 [AC_MSG_CHECKING([if kernel has MS_FLOCK_LOCK sb flag])
 632 LB_LINUX_TRY_COMPILE([
 633         #include <linux/fs.h>
 634 ],[
 635         int flags = MS_FLOCK_LOCK;
 636 ],[
 637         AC_DEFINE(HAVE_MS_FLOCK_LOCK, 1,
 638                 [kernel has MS_FLOCK_LOCK flag])
 639         AC_MSG_RESULT([yes])
 640 ],[
 641         AC_MSG_RESULT([no])
 642 ])
 643 ])
 644
 645 #
 646 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 647 #
 648 # SLES9 kernel has third arg can_sleep
 649 # in fs/locks.c: flock_lock_file_wait()
 650 #
 651 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 652 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 653 LB_LINUX_TRY_COMPILE([
 654         #include <linux/fs.h>
 655 ],[
 656         int cansleep;
 657         struct file *file;
 658         struct file_lock *file_lock;
 659         flock_lock_file_wait(file, file_lock, cansleep);
 660 ],[
 661         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 662                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 663         AC_MSG_RESULT([yes])
 664 ],[
 665         AC_MSG_RESULT([no])
 666 ])
 667 ])
 668
 669 #
 670 # LC_FUNC_F_OP_FLOCK
 671 #
 672 # rhel4.2 kernel has f_op->flock field
 673 #
 674 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 675 [AC_MSG_CHECKING([if struct file_operations has flock field])
 676 LB_LINUX_TRY_COMPILE([
 677         #include <linux/fs.h>
 678 ],[
 679         struct file_operations ll_file_operations_flock;
 680         ll_file_operations_flock.flock = NULL;
 681 ],[
 682         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 683                 [struct file_operations has flock field])
 684         AC_MSG_RESULT([yes])
 685 ],[
 686         AC_MSG_RESULT([no])
 687 ])
 688 ])
 689
 690 #
 691 # LC_FUNC_MS_FLOCK_LOCK
 692 #
 693 # SLES9 kernel has MS_FLOCK_LOCK sb flag
 694 #
 695 AC_DEFUN([LC_FUNC_MS_FLOCK_LOCK],
 696 [AC_MSG_CHECKING([if kernel has MS_FLOCK_LOCK sb flag])
 697 LB_LINUX_TRY_COMPILE([
 698         #include <linux/fs.h>
 699 ],[
 700         int flags = MS_FLOCK_LOCK;
 701 ],[
 702         AC_DEFINE(HAVE_MS_FLOCK_LOCK, 1,
 703                 [kernel has MS_FLOCK_LOCK flag])
 704         AC_MSG_RESULT([yes])
 705 ],[
 706         AC_MSG_RESULT([no])
 707 ])
 708 ])
 709
 710 #
 711 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 712 #
 713 # SLES9 kernel has third arg can_sleep
 714 # in fs/locks.c: flock_lock_file_wait()
 715 #
 716 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 717 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 718 LB_LINUX_TRY_COMPILE([
 719         #include <linux/fs.h>
 720 ],[
 721         int cansleep;
 722         struct file *file;
 723         struct file_lock *file_lock;
 724         flock_lock_file_wait(file, file_lock, cansleep);
 725 ],[
 726         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 727                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 728         AC_MSG_RESULT([yes])
 729 ],[
 730         AC_MSG_RESULT([no])
 731 ])
 732 ])
 733
 734 #
 735 # LC_TASK_PPTR
 736 #
 737 # task struct has p_pptr instead of parent
 738 #
 739 AC_DEFUN([LC_TASK_PPTR],
 740 [AC_MSG_CHECKING([task p_pptr found])
 741 LB_LINUX_TRY_COMPILE([
 742         #include <linux/sched.h>
 743 ],[
 744         struct task_struct *p;
 745
 746         p = p->p_pptr;
 747 ],[
 748         AC_MSG_RESULT([yes])
 749         AC_DEFINE(HAVE_TASK_PPTR, 1, [task p_pptr found])
 750 ],[
 751         AC_MSG_RESULT([no])
 752 ])
 753 ])
 754
 755 #
 756 # LC_FUNC_F_OP_FLOCK
 757 #
 758 # rhel4.2 kernel has f_op->flock field
 759 #
 760 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 761 [AC_MSG_CHECKING([if struct file_operations has flock field])
 762 LB_LINUX_TRY_COMPILE([
 763         #include <linux/fs.h>
 764 ],[
 765         struct file_operations ll_file_operations_flock;
 766         ll_file_operations_flock.flock = NULL;
 767 ],[
 768         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 769                 [struct file_operations has flock field])
 770         AC_MSG_RESULT([yes])
 771 ],[
 772         AC_MSG_RESULT([no])
 773 ])
 774 ])
 775
 776 # LC_INODE_I_MUTEX
 777 # after 2.6.15 inode have i_mutex intead of i_sem
 778 AC_DEFUN([LC_INODE_I_MUTEX],
 779 [AC_MSG_CHECKING([use inode have i_mutex ])
 780 LB_LINUX_TRY_COMPILE([
 781         #include <linux/mutex.h>
 782         #include <linux/fs.h>
 783         #undef i_mutex
 784 ],[
 785         struct inode i;
 786
 787         mutex_unlock(&i.i_mutex);
 788 ],[
 789         AC_MSG_RESULT(yes)
 790         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 791                 [after 2.6.15 inode have i_mutex intead of i_sem])
 792 ],[
 793         AC_MSG_RESULT(NO)
 794 ])
 795 ])
 796
 797 # LC_SYMVERFILE
 798 # SLES 9 uses a different name for this file - unsure about vanilla kernels
 799 # around this version, but it matters for servers only.
 800 AC_DEFUN([LC_SYMVERFILE],
 801          [AC_MSG_CHECKING([name of symverfile])
 802           if grep -q Modules.symvers $LINUX/scripts/Makefile.modpost ; then
 803               SYMVERFILE=Modules.symvers
 804           else
 805               SYMVERFILE=Module.symvers
 806           fi
 807           AC_MSG_RESULT($SYMVERFILE)
 808           AC_SUBST(SYMVERFILE)])
 809
 810 # LC_DQUOTOFF_MUTEX
 811 # after 2.6.17 dquote use mutex instead if semaphore
 812 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 813 [AC_MSG_CHECKING([use dqonoff_mutex])
 814 LB_LINUX_TRY_COMPILE([
 815         #include <linux/mutex.h>
 816         #include <linux/fs.h>
 817         #include <linux/quota.h>
 818 ],[
 819         struct quota_info dq;
 820
 821         mutex_unlock(&dq.dqonoff_mutex);
 822 ],[
 823         AC_MSG_RESULT(yes)
 824         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 825                 [after 2.6.17 dquote use mutex instead if semaphore])
 826 ],[
 827         AC_MSG_RESULT(NO)
 828 ])
 829 ])
 830
 831 #
 832 # LC_STATFS_DENTRY_PARAM
 833 # starting from 2.6.18 linux kernel uses dentry instead of
 834 # super_block for first vfs_statfs argument
 835 #
 836 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 837 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
 838 LB_LINUX_TRY_COMPILE([
 839         #include <linux/fs.h>
 840 ],[
 841         int vfs_statfs(struct dentry *, struct kstatfs *);
 842 ],[
 843         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 844                 [first parameter of vfs_statfs is dentry])
 845         AC_MSG_RESULT([yes])
 846 ],[
 847         AC_MSG_RESULT([no])
 848 ])
 849 ])
 850
 851 #
 852 # LC_VFS_KERN_MOUNT
 853 # starting from 2.6.18 kernel don't export do_kern_mount
 854 # and want to use vfs_kern_mount instead.
 855 #
 856 AC_DEFUN([LC_VFS_KERN_MOUNT],
 857 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
 858 LB_LINUX_TRY_COMPILE([
 859         #include <linux/mount.h>
 860 ],[
 861         vfs_kern_mount(NULL, 0, NULL, NULL);
 862 ],[
 863         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
 864                 [vfs_kern_mount exist in kernel])
 865         AC_MSG_RESULT([yes])
 866 ],[
 867         AC_MSG_RESULT([no])
 868 ])
 869 ])
 870
 871 #
 872 # LC_INVALIDATEPAGE_RETURN_INT
 873 # more 2.6 api changes.  return type for the invalidatepage
 874 # address_space_operation is 'void' in new kernels but 'int' in old
 875 #
 876 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
 877 [AC_MSG_CHECKING([invalidatepage has return int])
 878 LB_LINUX_TRY_COMPILE([
 879         #include <linux/buffer_head.h>
 880 ],[
 881         int rc = block_invalidatepage(NULL, 0);
 882 ],[
 883         AC_MSG_RESULT(yes)
 884         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
 885                 [Define if return type of invalidatepage should be int])
 886 ],[
 887         AC_MSG_RESULT(NO)
 888 ])
 889 ])
 890
 891 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
 892 # more 2.6 API changes. 2.6.18 umount_begin has different parameters
 893 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
 894 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
 895 tmp_flags="$EXTRA_KCFLAGS"
 896 EXTRA_KCFLAGS="-Werror"
 897 LB_LINUX_TRY_COMPILE([
 898         #include <linux/fs.h>
 899
 900         struct vfsmount;
 901         static void cfg_umount_begin (struct vfsmount *v, int flags)
 902         {
 903                 ;
 904         }
 905
 906         static struct super_operations cfg_super_operations = {
 907                 .umount_begin   = cfg_umount_begin,
 908         };
 909 ],[
 910         cfg_super_operations.umount_begin(NULL,0);
 911 ],[
 912         AC_MSG_RESULT(yes)
 913         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
 914                 [Define umount_begin need second argument])
 915 ],[
 916         AC_MSG_RESULT(NO)
 917 ])
 918 EXTRA_KCFLAGS="$tmp_flags"
 919 ])
 920
 921 # 2.6.19 API changes
 922 # inode don't have i_blksize field
 923 AC_DEFUN([LC_INODE_BLKSIZE],
 924 [AC_MSG_CHECKING([inode has i_blksize field])
 925 LB_LINUX_TRY_COMPILE([
 926 #include <linux/fs.h>
 927 ],[
 928         struct inode i;
 929         i.i_blksize = 0;
 930 ],[
 931         AC_MSG_RESULT(yes)
 932         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
 933                 [struct inode has i_blksize field])
 934 ],[
 935         AC_MSG_RESULT(NO)
 936 ])
 937 ])
 938
 939 # LC_VFS_READDIR_U64_INO
 940 # 2.6.19 use u64 for inode number instead of inode_t
 941 AC_DEFUN([LC_VFS_READDIR_U64_INO],
 942 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
 943 tmp_flags="$EXTRA_KCFLAGS"
 944 EXTRA_KCFLAGS="-Werror"
 945 LB_LINUX_TRY_COMPILE([
 946 #include <linux/fs.h>
 947         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
 948                       u64 ino, unsigned int d_type)
 949         {
 950                 return 0;
 951         }
 952 ],[
 953         filldir_t filter;
 954
 955         filter = fillonedir;
 956         return 1;
 957 ],[
 958         AC_MSG_RESULT(yes)
 959         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
 960                 [if vfs_readdir need 64bit inode number])
 961 ],[
 962         AC_MSG_RESULT(NO)
 963 ])
 964 EXTRA_KCFLAGS="$tmp_flags"
 965 ])
 966
 967 # LC_GENERIC_FILE_WRITE
 968 # 2.6.19 introduce do_sync_write instead of
 969 # generic_file_write
 970 AC_DEFUN([LC_GENERIC_FILE_WRITE],
 971 [AC_MSG_CHECKING([use generic_file_write])
 972 LB_LINUX_TRY_COMPILE([
 973         #include <linux/fs.h>
 974 ],[
 975         int result = generic_file_read(NULL, NULL, 0, 0);
 976 ],[
 977         AC_MSG_RESULT(yes)
 978         AC_DEFINE(HAVE_GENERIC_FILE_WRITE, 1,
 979                 [use generic_file_write])
 980 ],[
 981         AC_MSG_RESULT(NO)
 982 ])
 983 ])
 984
 985 # LC_GENERIC_FILE_READ
 986 # 2.6.19 need to use do_sync_read instead of
 987 # generic_file_read
 988 AC_DEFUN([LC_GENERIC_FILE_READ],
 989 [AC_MSG_CHECKING([use generic_file_read])
 990 LB_LINUX_TRY_COMPILE([
 991         #include <linux/fs.h>
 992 ],[
 993         int result = generic_file_read(NULL, NULL, 0, 0);
 994 ],[
 995         AC_MSG_RESULT(yes)
 996         AC_DEFINE(HAVE_GENERIC_FILE_READ, 1,
 997                 [use generic_file_read])
 998 ],[
 999         AC_MSG_RESULT(NO)
1000 ])
1001 ])
1002
1003 # LC_NR_PAGECACHE
1004 # 2.6.18 don't export nr_pagecahe
1005 AC_DEFUN([LC_NR_PAGECACHE],
1006 [AC_MSG_CHECKING([kernel export nr_pagecache])
1007 LB_LINUX_TRY_COMPILE([
1008         #include <linux/pagemap.h>
1009 ],[
1010         return atomic_read(&nr_pagecache);
1011 ],[
1012         AC_MSG_RESULT(yes)
1013         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
1014                 [is kernel export nr_pagecache])
1015 ],[
1016         AC_MSG_RESULT(NO)
1017 ])
1018 ])
1019
1020 # LC_CANCEL_DIRTY_PAGE
1021 # 2.6.20 introduse cancel_dirty_page instead of
1022 # clear_page_dirty.
1023 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1024 [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1025 LB_LINUX_TRY_COMPILE([
1026         #include <linux/page-flags.h>
1027 ],[
1028         cancel_dirty_page(NULL, 0);
1029 ],[
1030         AC_MSG_RESULT(yes)
1031         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1032                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1033 ],[
1034         AC_MSG_RESULT(NO)
1035 ])
1036 ])
1037
1038 #
1039 # LC_PAGE_CONSTANT
1040 #
1041 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1042 # it support constant page, which means the page won't be modified during the
1043 # IO.
1044 #
1045 AC_DEFUN([LC_PAGE_CONSTANT],
1046 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1047 LB_LINUX_TRY_COMPILE([
1048         #include <linux/page-flags.h>
1049 ],[
1050         #ifndef PG_constant
1051         #error "Have no raid5 zcopy patch"
1052         #endif
1053 ],[
1054         AC_MSG_RESULT(yes)
1055         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1056 ],[
1057         AC_MSG_RESULT(no);
1058 ])
1059 ])
1060
1061 # RHEL5 in FS-cache patch rename PG_checked flag
1062 # into PG_fs_misc
1063 AC_DEFUN([LC_PG_FS_MISC],
1064 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1065 LB_LINUX_TRY_COMPILE([
1066         #include <linux/page-flags.h>
1067 ],[
1068         #ifndef PG_fs_misc
1069         #error PG_fs_misc not defined in kernel
1070         #endif
1071 ],[
1072         AC_MSG_RESULT(yes)
1073         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1074                   [is kernel have PG_fs_misc])
1075 ],[
1076         AC_MSG_RESULT(NO)
1077 ])
1078 ])
1079
1080 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
1081 [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
1082 [mm/truncate.c],[
1083 AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
1084             [kernel export truncate_complete_page])
1085 ],[
1086 ])
1087 ])
1088
1089 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
1090 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
1091 [fs/dcache.c],[
1092 AC_DEFINE(HAVE_D_REHASH_COND, 1,
1093             [d_rehash_cond is exported by the kernel])
1094 ],[
1095 ])
1096 ])
1097
1098 AC_DEFUN([LC_EXPORT___D_REHASH],
1099 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
1100 [fs/dcache.c],[
1101 AC_DEFINE(HAVE___D_REHASH, 1,
1102             [__d_rehash is exported by the kernel])
1103 ],[
1104 ])
1105 ])
1106
1107 AC_DEFUN([LC_EXPORT_D_MOVE_LOCKED],
1108 [LB_CHECK_SYMBOL_EXPORT([d_move_locked],
1109 [fs/dcache.c],[
1110 AC_DEFINE(HAVE_D_MOVE_LOCKED, 1,
1111             [d_move_locked is exported by the kernel])
1112 ],[
1113 ])
1114 ])
1115
1116 AC_DEFUN([LC_EXPORT___D_MOVE],
1117 [LB_CHECK_SYMBOL_EXPORT([__d_move],
1118 [fs/dcache.c],[
1119 AC_DEFINE(HAVE___D_MOVE, 1,
1120             [__d_move is exported by the kernel])
1121 ],[
1122 ])
1123 ])
1124
1125 # The actual symbol exported varies among architectures, so we need
1126 # to check many symbols (but only in the current architecture.)  No
1127 # matter what symbol is exported, the kernel #defines node_to_cpumask
1128 # to the appropriate function and that's what we use.
1129 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
1130          [LB_LINUX_ARCH
1131           LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
1132                                  [arch/$LINUX_ARCH/mm/numa.c],
1133                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1134                                             [node_to_cpumask is exported by
1135                                              the kernel])]) # x86_64
1136           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
1137                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1138                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1139                                             [node_to_cpumask is exported by
1140                                              the kernel])]) # ia64
1141           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
1142                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1143                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1144                                             [node_to_cpumask is exported by
1145                                              the kernel])]) # i386
1146           ])
1147
1148 #
1149 # LC_VFS_INTENT_PATCHES
1150 #
1151 # check if the kernel has the VFS intent patches
1152 AC_DEFUN([LC_VFS_INTENT_PATCHES],
1153 [AC_MSG_CHECKING([if the kernel has the VFS intent patches])
1154 LB_LINUX_TRY_COMPILE([
1155         #include <linux/fs.h>
1156         #include <linux/namei.h>
1157 ],[
1158         struct nameidata nd;
1159         struct lookup_intent *it;
1160
1161         it = &nd.intent;
1162         intent_init(it, IT_OPEN);
1163         it->d.lustre.it_disposition = 0;
1164         it->d.lustre.it_data = NULL;
1165 ],[
1166         AC_MSG_RESULT([yes])
1167         AC_DEFINE(HAVE_VFS_INTENT_PATCHES, 1, [VFS intent patches are applied])
1168 ],[
1169         AC_MSG_RESULT([no])
1170 ])
1171 ])
1172
1173 # 2.6.22 lost second parameter for invalidate_bdev
1174 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1175 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1176 LB_LINUX_TRY_COMPILE([
1177         #include <linux/buffer_head.h>
1178 ],[
1179         invalidate_bdev(NULL,0);
1180 ],[
1181         AC_MSG_RESULT([yes])
1182         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1183                 [invalidate_bdev has second argument])
1184 ],[
1185         AC_MSG_RESULT([no])
1186 ])
1187 ])
1188
1189 # 2.6.23 have return type 'void' for unregister_blkdev
1190 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1191 [AC_MSG_CHECKING([if unregister_blkdev return int])
1192 LB_LINUX_TRY_COMPILE([
1193         #include <linux/fs.h>
1194 ],[
1195         int i = unregister_blkdev(0,NULL);
1196 ],[
1197         AC_MSG_RESULT([yes])
1198         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1199                 [unregister_blkdev return int])
1200 ],[
1201         AC_MSG_RESULT([no])
1202 ])
1203 ])
1204
1205 # 2.6.23 change .sendfile to .splice_read
1206 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1207 [AC_MSG_CHECKING([if kernel has .splice_read])
1208 LB_LINUX_TRY_COMPILE([
1209         #include <linux/fs.h>
1210 ],[
1211         struct file_operations file;
1212
1213         file.splice_read = NULL;
1214 ], [
1215         AC_MSG_RESULT([yes])
1216         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1217                 [kernel has .slice_read])
1218 ],[
1219         AC_MSG_RESULT([no])
1220 ])
1221 ])
1222
1223 # 2.6.23 extract nfs export related data into exportfs.h
1224 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1225 [
1226 tmpfl="$CFLAGS"
1227 CFLAGS="$CFLAGS -I$LINUX_OBJ/include"
1228 AC_CHECK_HEADERS([linux/exportfs.h])
1229 CFLAGS="$tmpfl"
1230 ])
1231
1232 #
1233 # LC_PROG_LINUX
1234 #
1235 # Lustre linux kernel checks
1236 #
1237 AC_DEFUN([LC_PROG_LINUX],
1238          [LC_LUSTRE_VERSION_H
1239           if test x$enable_server = xyes ; then
1240               LC_CONFIG_BACKINGFS
1241           fi
1242           LC_CONFIG_PINGER
1243           LC_CONFIG_CHECKSUM
1244           LC_CONFIG_LIBLUSTRE_RECOVERY
1245           LC_CONFIG_QUOTA
1246           LC_CONFIG_HEALTH_CHECK_WRITE
1247           LC_CONFIG_LRU_RESIZE
1248
1249           LC_TASK_PPTR
1250           # RHEL4 patches
1251           LC_EXPORT_TRUNCATE_COMPLETE
1252           LC_EXPORT_D_REHASH_COND
1253           LC_EXPORT___D_REHASH
1254           LC_EXPORT_D_MOVE_LOCKED
1255           LC_EXPORT___D_MOVE
1256           LC_EXPORT_NODE_TO_CPUMASK
1257
1258           LC_STRUCT_KIOBUF
1259           LC_FUNC_COND_RESCHED
1260           LC_FUNC_ZAP_PAGE_RANGE
1261           LC_FUNC_PDE
1262           LC_FUNC_DIRECT_IO
1263           LC_HEADER_MM_INLINE
1264           LC_STRUCT_INODE
1265           LC_FUNC_REGISTER_CACHE
1266           LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1267           LC_FUNC_DEV_SET_RDONLY
1268           LC_FUNC_FILEMAP_FDATAWRITE
1269           LC_STRUCT_STATFS
1270           LC_FUNC_PAGE_MAPPED
1271           LC_STRUCT_FILE_OPS_UNLOCKED_IOCTL
1272           LC_FILEMAP_POPULATE
1273           LC_D_ADD_UNIQUE
1274           LC_BIT_SPINLOCK_H
1275           LC_XATTR_ACL
1276           LC_STRUCT_INTENT_FILE
1277           LC_POSIX_ACL_XATTR_H
1278           LC_EXPORT___IGET
1279           LC_FUNC_SET_FS_PWD
1280           LC_FUNC_MS_FLOCK_LOCK
1281           LC_FUNC_HAVE_CAN_SLEEP_ARG
1282           LC_FUNC_F_OP_FLOCK
1283           LC_QUOTA_READ
1284           LC_COOKIE_FOLLOW_LINK
1285           LC_FUNC_RCU
1286
1287           # does the kernel have VFS intent patches?
1288           LC_VFS_INTENT_PATCHES
1289
1290           # 2.6.15
1291           LC_INODE_I_MUTEX
1292
1293           # SLES 10 (at least)
1294           LC_SYMVERFILE
1295
1296           # 2.6.17
1297           LC_DQUOTOFF_MUTEX
1298
1299           # 2.6.18
1300           LC_NR_PAGECACHE
1301           LC_STATFS_DENTRY_PARAM
1302           LC_VFS_KERN_MOUNT
1303           LC_INVALIDATEPAGE_RETURN_INT
1304           LC_UMOUNTBEGIN_HAS_VFSMOUNT
1305
1306           #2.6.18 + RHEL5 (fc6)
1307           LC_PG_FS_MISC
1308
1309           # 2.6.19
1310           LC_INODE_BLKSIZE
1311           LC_VFS_READDIR_U64_INO
1312           LC_GENERIC_FILE_READ
1313           LC_GENERIC_FILE_WRITE
1314
1315           # 2.6.20
1316           LC_CANCEL_DIRTY_PAGE
1317
1318           # raid5-zerocopy patch
1319           LC_PAGE_CONSTANT
1320
1321           # 2.6.22
1322           LC_INVALIDATE_BDEV_2ARG
1323           # 2.6.23
1324           LC_UNREGISTER_BLKDEV_RETURN_INT
1325           LC_KERNEL_SPLICE_READ
1326           LC_HAVE_EXPORTFS_H
1327 ])
1328
1329 #
1330 # LC_CONFIG_CLIENT_SERVER
1331 #
1332 # Build client/server sides of Lustre
1333 #
1334 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
1335 [AC_MSG_CHECKING([whether to build Lustre server support])
1336 AC_ARG_ENABLE([server],
1337         AC_HELP_STRING([--disable-server],
1338                         [disable Lustre server support]),
1339         [],[enable_server='yes'])
1340 AC_MSG_RESULT([$enable_server])
1341
1342 AC_MSG_CHECKING([whether to build Lustre client support])
1343 AC_ARG_ENABLE([client],
1344         AC_HELP_STRING([--disable-client],
1345                         [disable Lustre client support]),
1346         [],[enable_client='yes'])
1347 AC_MSG_RESULT([$enable_client])])
1348
1349 #
1350 # LC_CONFIG_LIBLUSTRE
1351 #
1352 # whether to build liblustre
1353 #
1354 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1355 [AC_MSG_CHECKING([whether to build Lustre library])
1356 AC_ARG_ENABLE([liblustre],
1357         AC_HELP_STRING([--disable-liblustre],
1358                         [disable building of Lustre library]),
1359         [],[enable_liblustre=$with_sysio])
1360 AC_MSG_RESULT([$enable_liblustre])
1361 # only build sysio if liblustre is built
1362 with_sysio="$enable_liblustre"
1363
1364 AC_MSG_CHECKING([whether to build liblustre tests])
1365 AC_ARG_ENABLE([liblustre-tests],
1366         AC_HELP_STRING([--enable-liblustre-tests],
1367                         [enable liblustre tests, if --disable-tests is used]),
1368         [],[enable_liblustre_tests=$enable_tests])
1369 if test x$enable_liblustre != xyes ; then
1370    enable_liblustre_tests='no'
1371 fi
1372 AC_MSG_RESULT([$enable_liblustre_tests])
1373
1374 AC_MSG_CHECKING([whether to enable liblustre acl])
1375 AC_ARG_ENABLE([liblustre-acl],
1376         AC_HELP_STRING([--disable-liblustre-acl],
1377                         [disable ACL support for liblustre]),
1378         [],[enable_liblustre_acl=yes])
1379 if test x$enable_liblustre != xyes ; then
1380    enable_liblustre_acl='no'
1381 fi
1382 AC_MSG_RESULT([$enable_liblustre_acl])
1383 if test x$enable_liblustre_acl != xno ; then
1384   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1385 fi
1386
1387 AC_MSG_CHECKING([whether to build mpitests])
1388 AC_ARG_ENABLE([mpitests],
1389         AC_HELP_STRING([--enable-mpitests],
1390                         [build liblustre mpi tests]),
1391         [],[enable_mpitests=no])
1392 AC_MSG_RESULT([$enable_mpitests])
1393
1394 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1395 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1396
1397 LC_CONFIG_PINGER
1398 LC_CONFIG_LIBLUSTRE_RECOVERY
1399 ])
1400
1401 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
1402 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
1403 AC_ARG_ENABLE([lru_resize],
1404         AC_HELP_STRING([--enable-lru-resize],
1405                         [enable lru resize support]),
1406         [],[enable_lru_resize='yes'])
1407 AC_MSG_RESULT([$enable_lru_resize])
1408 if test x$enable_lru_resize != xno; then
1409    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
1410 fi
1411 ])
1412
1413 #
1414 # LC_CONFIG_QUOTA
1415 #
1416 # whether to enable quota support
1417 #
1418 AC_DEFUN([LC_CONFIG_QUOTA],
1419 [AC_MSG_CHECKING([whether to enable quota support])
1420 AC_ARG_ENABLE([quota],
1421         AC_HELP_STRING([--enable-quota],
1422                         [enable quota support]),
1423         [],[enable_quota='yes'])
1424 AC_MSG_RESULT([$enable_quota])
1425 if test x$linux25 != xyes; then
1426    enable_quota='no'
1427 fi
1428 if test x$enable_quota != xno; then
1429    AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
1430 fi
1431 ])
1432
1433 AC_DEFUN([LC_QUOTA_READ],
1434 [AC_MSG_CHECKING([if kernel supports quota_read])
1435 LB_LINUX_TRY_COMPILE([
1436         #include <linux/fs.h>
1437 ],[
1438         struct super_operations sp;
1439         void *i = (void *)sp.quota_read;
1440 ],[
1441         AC_MSG_RESULT([yes])
1442         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
1443 ],[
1444         AC_MSG_RESULT([no])
1445 ])
1446 ])
1447
1448 #
1449 # LC_COOKIE_FOLLOW_LINK
1450 #
1451 # kernel 2.6.13+ ->follow_link returns a cookie
1452 #
1453
1454 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
1455 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
1456 LB_LINUX_TRY_COMPILE([
1457         #include <linux/fs.h>
1458         #include <linux/namei.h>
1459 ],[
1460         struct dentry dentry;
1461         struct nameidata nd;
1462
1463         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
1464 ],[
1465         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
1466         AC_MSG_RESULT([yes])
1467 ],[
1468         AC_MSG_RESULT([no])
1469 ])
1470 ])
1471
1472 #
1473 # LC_FUNC_RCU
1474 #
1475 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
1476 # call_rcu takes three parameters.
1477 #
1478 AC_DEFUN([LC_FUNC_RCU],
1479 [AC_MSG_CHECKING([if kernel have RCU supported])
1480 LB_LINUX_TRY_COMPILE([
1481         #include <linux/rcupdate.h>
1482 ],[],[
1483         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
1484         AC_MSG_RESULT([yes])
1485
1486         AC_MSG_CHECKING([if call_rcu takes three parameters])
1487         LB_LINUX_TRY_COMPILE([
1488                 #include <linux/rcupdate.h>
1489         ],[
1490                 struct rcu_head rh;
1491                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
1492         ],[
1493                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
1494                 AC_MSG_RESULT([yes])
1495         ],[
1496                 AC_MSG_RESULT([no])
1497         ])
1498 ],[
1499         AC_MSG_RESULT([no])
1500 ])
1501 ])
1502
1503 #
1504 # LC_CONFIGURE
1505 #
1506 # other configure checks
1507 #
1508 AC_DEFUN([LC_CONFIGURE],
1509 [LC_CONFIG_OBD_BUFFER_SIZE
1510
1511 # include/liblustre.h
1512 AC_CHECK_HEADERS([asm/page.h sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1513
1514 # include/lustre/lustre_user.h
1515 # See note there re: __ASM_X86_64_PROCESSOR_H
1516 AC_CHECK_HEADERS([linux/fs.h linux/quota.h])
1517
1518 # liblustre/llite_lib.h
1519 AC_CHECK_HEADERS([xtio.h file.h])
1520
1521 # liblustre/dir.c
1522 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1523
1524 # liblustre/lutil.c
1525 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1526 AC_CHECK_FUNCS([inet_ntoa])
1527
1528 # libsysio/src/readlink.c
1529 LC_READLINK_SSIZE_T
1530
1531 # utils/llverfs.c
1532 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1533
1534 # include/linux/obd_support.h
1535 AC_CHECK_HEADERS([zlib.h])
1536
1537 # check for -lz support
1538 AC_CHECK_LIB(z, [adler32],
1539         [
1540                 ZLIB="-lz"
1541                 AC_DEFINE([HAVE_ADLER], 1, [support alder32 checksum type])
1542         ],
1543         [
1544                 ZLIB=""
1545                 AC_MSG_WARN([No zlib-devel package found, unable to use adler32 checksum])
1546         ])
1547 AC_SUBST(ZLIB)
1548
1549 # Super safe df
1550 AC_ARG_ENABLE([mindf],
1551       AC_HELP_STRING([--enable-mindf],
1552                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1553       [],[])
1554 if test "$enable_mindf" = "yes" ;  then
1555       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1556 fi
1557
1558 AC_ARG_ENABLE([fail_alloc],
1559         AC_HELP_STRING([--disable-fail-alloc],
1560                 [disable randomly alloc failure]),
1561         [],[enable_fail_alloc=yes])
1562 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1563 AC_MSG_RESULT([$enable_fail_alloc])
1564 if test x$enable_fail_alloc != xno ; then
1565         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1566 fi
1567
1568 ])
1569
1570 #
1571 # LC_CONDITIONALS
1572 #
1573 # AM_CONDITIONALS for lustre
1574 #
1575 AC_DEFUN([LC_CONDITIONALS],
1576 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1577 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
1578 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1579 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1580 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1581 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1582 AM_CONDITIONAL(QUOTA, test x$enable_quota = xyes)
1583 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1584 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1585 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1586 ])
1587
1588 #
1589 # LC_CONFIG_FILES
1590 #
1591 # files that should be generated with AC_OUTPUT
1592 #
1593 AC_DEFUN([LC_CONFIG_FILES],
1594 [AC_CONFIG_FILES([
1595 lustre/Makefile
1596 lustre/autoMakefile
1597 lustre/autoconf/Makefile
1598 lustre/contrib/Makefile
1599 lustre/doc/Makefile
1600 lustre/include/Makefile
1601 lustre/include/lustre_ver.h
1602 lustre/include/linux/Makefile
1603 lustre/include/lustre/Makefile
1604 lustre/kernel_patches/targets/2.6-suse.target
1605 lustre/kernel_patches/targets/2.6-vanilla.target
1606 lustre/kernel_patches/targets/2.6-rhel4.target
1607 lustre/kernel_patches/targets/2.6-rhel5.target
1608 lustre/kernel_patches/targets/2.6-fc5.target
1609 lustre/kernel_patches/targets/2.6-patchless.target
1610 lustre/kernel_patches/targets/2.6-sles10.target
1611 lustre/kernel_patches/targets/hp_pnnl-2.4.target
1612 lustre/kernel_patches/targets/rh-2.4.target
1613 lustre/kernel_patches/targets/rhel-2.4.target
1614 lustre/kernel_patches/targets/suse-2.4.21-2.target
1615 lustre/kernel_patches/targets/sles-2.4.target
1616 lustre/ldlm/Makefile
1617 lustre/liblustre/Makefile
1618 lustre/liblustre/tests/Makefile
1619 lustre/llite/Makefile
1620 lustre/llite/autoMakefile
1621 lustre/lov/Makefile
1622 lustre/lov/autoMakefile
1623 lustre/lvfs/Makefile
1624 lustre/lvfs/autoMakefile
1625 lustre/mdc/Makefile
1626 lustre/mdc/autoMakefile
1627 lustre/mds/Makefile
1628 lustre/mds/autoMakefile
1629 lustre/obdclass/Makefile
1630 lustre/obdclass/autoMakefile
1631 lustre/obdclass/linux/Makefile
1632 lustre/obdecho/Makefile
1633 lustre/obdecho/autoMakefile
1634 lustre/obdfilter/Makefile
1635 lustre/obdfilter/autoMakefile
1636 lustre/osc/Makefile
1637 lustre/osc/autoMakefile
1638 lustre/ost/Makefile
1639 lustre/ost/autoMakefile
1640 lustre/mgc/Makefile
1641 lustre/mgc/autoMakefile
1642 lustre/mgs/Makefile
1643 lustre/mgs/autoMakefile
1644 lustre/ptlrpc/Makefile
1645 lustre/ptlrpc/autoMakefile
1646 lustre/quota/Makefile
1647 lustre/quota/autoMakefile
1648 lustre/scripts/Makefile
1649 lustre/scripts/version_tag.pl
1650 lustre/tests/Makefile
1651 lustre/utils/Makefile
1652 ])
1653 case $lb_target_os in
1654         darwin)
1655                 AC_CONFIG_FILES([ lustre/obdclass/darwin/Makefile ])
1656                 ;;
1657 esac
1658
1659 ])