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LU-506 kernel: FC15 - blkdev_get_by_dev() used instead of open_by_devnum().
[fs/lustre-release.git] / lustre / autoconf / lustre-core.m4
1 #* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 #* vim:expandtab:shiftwidth=8:tabstop=8:
3 #
4 # LC_CONFIG_SRCDIR
5 #
6 # Wrapper for AC_CONFIG_SUBDIR
7 #
8 AC_DEFUN([LC_CONFIG_SRCDIR],
9 [AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
10 libcfs_is_module=yes
11 ldiskfs_is_ext4=yes
12 ])
13
14 #
15 # LC_PATH_DEFAULTS
16 #
17 # lustre specific paths
18 #
19 AC_DEFUN([LC_PATH_DEFAULTS],
20 [# ptlrpc kernel build requires this
21 LUSTRE="$PWD/lustre"
22 AC_SUBST(LUSTRE)
23
24 # mount.lustre
25 rootsbindir='/sbin'
26 AC_SUBST(rootsbindir)
27
28 demodir='$(docdir)/demo'
29 AC_SUBST(demodir)
30
31 pkgexampledir='${pkgdatadir}/examples'
32 AC_SUBST(pkgexampledir)
33 ])
34
35 #
36 # LC_TARGET_SUPPORTED
37 #
38 # is the target os supported?
39 #
40 AC_DEFUN([LC_TARGET_SUPPORTED],
41 [case $target_os in
42         linux* | darwin*)
43 $1
44                 ;;
45         *)
46 $2
47                 ;;
48 esac
49 ])
50
51 #
52 # LC_CONFIG_OBD_BUFFER_SIZE
53 #
54 # the maximum buffer size of lctl ioctls
55 #
56 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
57 [AC_MSG_CHECKING([maximum OBD ioctl size])
58 AC_ARG_WITH([obd-buffer-size],
59         AC_HELP_STRING([--with-obd-buffer-size=[size]],
60                         [set lctl ioctl maximum bytes (default=8192)]),
61         [
62                 OBD_BUFFER_SIZE=$with_obd_buffer_size
63         ],[
64                 OBD_BUFFER_SIZE=8192
65         ])
66 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
67 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
68 ])
69
70 #
71 # LC_READLINK_SSIZE_T
72 #
73 AC_DEFUN([LC_READLINK_SSIZE_T],
74 [AC_MSG_CHECKING([if readlink returns ssize_t])
75 AC_TRY_COMPILE([
76         #include <unistd.h>
77 ],[
78         ssize_t readlink(const char *, char *, size_t);
79 ],[
80         AC_MSG_RESULT([yes])
81         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
82 ],[
83         AC_MSG_RESULT([no])
84 ])
85 ])
86
87 #
88 # LC_FUNC_RELEASEPAGE_WITH_GFP
89 #
90 # 2.6.9 ->releasepage() takes a gfp_t arg
91 # This kernel defines gfp_t (HAS_GFP_T) but doesn't use it for this function,
92 # while others either don't have gfp_t or pass gfp_t as the parameter.
93 #
94 AC_DEFUN([LC_FUNC_RELEASEPAGE_WITH_GFP],
95 [AC_MSG_CHECKING([if releasepage has a gfp_t parameter])
96 RELEASEPAGE_WITH_GFP="$(grep -c 'releasepage.*gfp_t' $LINUX/include/linux/fs.h)"
97 if test "$RELEASEPAGE_WITH_GFP" != 0 ; then
98         AC_DEFINE(HAVE_RELEASEPAGE_WITH_GFP, 1,
99                   [releasepage with gfp_t parameter])
100         AC_MSG_RESULT([yes])
101 else
102         AC_MSG_RESULT([no])
103 fi
104 ])
105
106
107
108 #
109 # only for Lustre-patched kernels
110 #
111 AC_DEFUN([LC_LUSTRE_VERSION_H],
112 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
113         rm -f "$LUSTRE/include/linux/lustre_version.h"
114 ],[
115         touch "$LUSTRE/include/linux/lustre_version.h"
116         if test x$enable_server = xyes ; then
117                 AC_MSG_WARN([Unpatched kernel detected.])
118                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
119                 AC_MSG_WARN([disabling server build])
120                 enable_server='no'
121         fi
122 ])
123 ])
124
125 #
126 # LC_FUNC_DEV_SET_RDONLY
127 #
128 # check for the old-style dev_set_rdonly which took an extra "devno" param
129 # and can only set a single device to discard writes at one time
130 #
131 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
132 [AC_MSG_CHECKING([if kernel has new dev_set_rdonly])
133 LB_LINUX_TRY_COMPILE([
134         #include <linux/fs.h>
135         #include <linux/blkdev.h>
136 ],[
137         #ifndef HAVE_CLEAR_RDONLY_ON_PUT
138         #error needs to be patched by lustre kernel patches from Lustre version 1.4.3 or above.
139         #endif
140 ],[
141         AC_MSG_RESULT([yes])
142         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel has new dev_set_rdonly])
143 ],[
144         AC_MSG_ERROR([no, Linux kernel source needs to be patches by lustre
145 kernel patches from Lustre version 1.4.3 or above.])
146 ])
147 ])
148
149 #
150 # Ensure stack size big than 8k in Lustre server (all kernels)
151 #
152 AC_DEFUN([LC_STACK_SIZE],
153 [AC_MSG_CHECKING([stack size big than 8k])
154 LB_LINUX_TRY_COMPILE([
155         #include <linux/thread_info.h>
156 ],[
157         #if THREAD_SIZE < 8192
158         #error "stack size < 8192"
159         #endif
160 ],[
161         AC_MSG_RESULT(yes)
162 ],[
163         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
164 ])
165 ])
166
167 #
168 # Allow the user to set the MDS thread upper limit
169 #
170 AC_DEFUN([LC_MDS_MAX_THREADS],
171 [
172         AC_ARG_WITH([mds_max_threads],
173         AC_HELP_STRING([--with-mds-max-threads=size],
174                         [define the maximum number of threads available on the MDS: (default=512)]),
175         [
176                 MDS_THREAD_COUNT=$with_mds_max_threads
177                 AC_DEFINE_UNQUOTED(MDT_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of mdt threads])
178         ])
179 ])
180
181 #
182 # LC_CONFIG_PINGER
183 #
184 # the pinger is temporary, until we have the recovery node in place
185 #
186 AC_DEFUN([LC_CONFIG_PINGER],
187 [AC_MSG_CHECKING([whether to enable pinger support])
188 AC_ARG_ENABLE([pinger],
189         AC_HELP_STRING([--disable-pinger],
190                         [disable recovery pinger support]),
191         [],[enable_pinger='yes'])
192 AC_MSG_RESULT([$enable_pinger])
193 if test x$enable_pinger != xno ; then
194   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
195 fi
196 ])
197
198 #
199 # LC_CONFIG_CHECKSUM
200 #
201 # do checksum of bulk data between client and OST
202 #
203 AC_DEFUN([LC_CONFIG_CHECKSUM],
204 [AC_MSG_CHECKING([whether to enable data checksum support])
205 AC_ARG_ENABLE([checksum],
206        AC_HELP_STRING([--disable-checksum],
207                        [disable data checksum support]),
208        [],[enable_checksum='yes'])
209 AC_MSG_RESULT([$enable_checksum])
210 if test x$enable_checksum != xno ; then
211   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
212 fi
213 ])
214
215 #
216 # LC_CONFIG_LIBLUSTRE_RECOVERY
217 #
218 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
219 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
220 AC_ARG_ENABLE([liblustre-recovery],
221         AC_HELP_STRING([--disable-liblustre-recovery],
222                         [disable liblustre recovery support]),
223         [],[enable_liblustre_recovery='yes'])
224 AC_MSG_RESULT([$enable_liblustre_recovery])
225 if test x$enable_liblustre_recovery != xno ; then
226   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
227 fi
228 ])
229
230 #
231 # LC_CONFIG_HEALTH_CHECK_WRITE
232 #
233 # Turn off the actual write to the disk
234 #
235 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
236 [AC_MSG_CHECKING([whether to enable a write with the health check])
237 AC_ARG_ENABLE([health_write],
238         AC_HELP_STRING([--enable-health_write],
239                         [enable disk writes when doing health check]),
240         [],[enable_health_write='no'])
241 AC_MSG_RESULT([$enable_health_write])
242 if test x$enable_health_write != xno ; then
243   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
244 fi
245 ])
246
247 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
248 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
249 AC_ARG_ENABLE([lru_resize],
250         AC_HELP_STRING([--enable-lru-resize],
251                         [enable lru resize support]),
252         [],[enable_lru_resize='yes'])
253 AC_MSG_RESULT([$enable_lru_resize])
254 if test x$enable_lru_resize != xno; then
255    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
256 fi
257 ])
258
259 # whether to enable quota support(kernel modules)
260 AC_DEFUN([LC_QUOTA_MODULE],
261 [if test x$enable_quota != xno; then
262     LB_LINUX_CONFIG([QUOTA],[
263         enable_quota_module='yes'
264         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
265     ],[
266         enable_quota_module='no'
267         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
268     ])
269 fi
270 ])
271
272 # truncate_complete_page() was exported from RHEL5/SLES10/SLES11
273 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
274 # delete_from_page_cache() is exported from 2.6.39
275 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
276          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
277                                  [mm/truncate.c],
278                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
279                                             [kernel export truncate_complete_page])])
280           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
281                                  [mm/filemap.c],
282                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
283                                             [kernel export remove_from_page_cache])])
284           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
285                                  [mm/filemap.c],
286                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
287                                             [kernel export delete_from_page_cache])])
288          ])
289
290 AC_DEFUN([LC_EXPORT_TRUNCATE_RANGE],
291 [LB_CHECK_SYMBOL_EXPORT([truncate_inode_pages_range],
292 [mm/truncate.c],[
293 AC_DEFINE(HAVE_TRUNCATE_RANGE, 1,
294             [kernel export truncate_inode_pages_range])
295 ],[
296 ])
297 ])
298
299 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
300 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
301 [fs/dcache.c],[
302 AC_DEFINE(HAVE_D_REHASH_COND, 1,
303             [d_rehash_cond is exported by the kernel])
304 ],[
305 ])
306 ])
307
308 AC_DEFUN([LC_EXPORT___D_REHASH],
309 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
310 [fs/dcache.c],[
311 AC_DEFINE(HAVE___D_REHASH, 1,
312             [__d_rehash is exported by the kernel])
313 ],[
314 ])
315 ])
316
317 # The actual symbol exported varies among architectures, so we need
318 # to check many symbols (but only in the current architecture.)  No
319 # matter what symbol is exported, the kernel #defines node_to_cpumask
320 # to the appropriate function and that's what we use.
321 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
322          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
323                                  [arch/$LINUX_ARCH/mm/numa.c],
324                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
325                                             [node_to_cpumask is exported by
326                                              the kernel])]) # x86_64
327           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
328                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
329                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
330                                             [node_to_cpumask is exported by
331                                              the kernel])]) # ia64
332           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
333                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
334                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
335                                             [node_to_cpumask is exported by
336                                              the kernel])]) # i386
337           ])
338
339 #
340 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
341 #
342 # Check for our patched grab_cache_page_nowait_gfp() function
343 # after 2.6.29 we can emulate this using add_to_page_cache_lru()
344 #
345 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
346 [LB_CHECK_SYMBOL_EXPORT([grab_cache_page_nowait_gfp],
347 [mm/filemap.c],[
348         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
349                   [kernel exports grab_cache_page_nowait_gfp])
350         ],
351         [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
352         [mm/filemap.c],[
353                 AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
354                         [kernel exports add_to_page_cache_lru])
355         ],[
356         ])
357         ])
358 ])
359
360 #
361 # LC_STRUCT_STATFS
362 #
363 # AIX does not have statfs.f_namelen
364 #
365 AC_DEFUN([LC_STRUCT_STATFS],
366 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
367 LB_LINUX_TRY_COMPILE([
368         #include <linux/vfs.h>
369 ],[
370         struct statfs sfs;
371         sfs.f_namelen = 1;
372 ],[
373         AC_MSG_RESULT([yes])
374         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
375 ],[
376         AC_MSG_RESULT([no])
377 ])
378 ])
379
380 #
381 # between 2.6.5 - 2.6.22 filemap_populate is exported in some kernels
382 #
383 AC_DEFUN([LC_FILEMAP_POPULATE],
384 [AC_MSG_CHECKING([for exported filemap_populate])
385 LB_LINUX_TRY_COMPILE([
386         #include <asm/page.h>
387         #include <linux/mm.h>
388 ],[
389        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
390 ],[
391         AC_MSG_RESULT([yes])
392         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
393 ],[
394         AC_MSG_RESULT([no])
395 ])
396 ])
397
398 #
399 # added in 2.6.15
400 #
401 AC_DEFUN([LC_D_ADD_UNIQUE],
402 [AC_MSG_CHECKING([for d_add_unique])
403 LB_LINUX_TRY_COMPILE([
404         #include <linux/dcache.h>
405 ],[
406        d_add_unique(NULL, NULL);
407 ],[
408         AC_MSG_RESULT([yes])
409         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
410 ],[
411         AC_MSG_RESULT([no])
412 ])
413 ])
414
415 #
416 # added in 2.6.17
417 #
418 AC_DEFUN([LC_BIT_SPINLOCK_H],
419 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
420         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
421         LB_LINUX_TRY_COMPILE([
422                 #include <asm/processor.h>
423                 #include <linux/spinlock.h>
424                 #include <linux/bit_spinlock.h>
425         ],[],[
426                 AC_MSG_RESULT([yes])
427                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
428         ],[
429                 AC_MSG_RESULT([no])
430         ])
431 ],
432 [])
433 ])
434
435 #
436 # After 2.6.26 we no longer have xattr_acl.h
437 #
438 AC_DEFUN([LC_XATTR_ACL],
439 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
440         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
441         LB_LINUX_TRY_COMPILE([
442                 #include <linux/xattr_acl.h>
443         ],[],[
444                 AC_MSG_RESULT([yes])
445                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
446         ],[
447                 AC_MSG_RESULT([no])
448         ])
449 ],
450 [])
451 ])
452
453 #
454 # After 2.6.16 the xattr_acl API is removed, and posix_acl is used instead
455 #
456 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
457 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
458         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
459         LB_LINUX_TRY_COMPILE([
460                 #include <linux/fs.h>
461                 #include <linux/posix_acl_xattr.h>
462         ],[],[
463                 AC_MSG_RESULT([yes])
464                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
465
466         ],[
467                 AC_MSG_RESULT([no])
468         ])
469 $1
470 ],[
471         AC_MSG_RESULT([no])
472 ])
473 ])
474
475 AC_DEFUN([LC_CONST_ACL_SIZE],
476 [AC_MSG_CHECKING([calc acl size])
477 tmp_flags="$CFLAGS"
478 CFLAGS="$CFLAGS -I$LINUX/include -I$LINUX_OBJ/include -I$LINUX_OBJ/include2 -I$LINUX/arch/`uname -m|sed -e 's/ppc.*/powerpc/' -e 's/x86_64/x86/' -e 's/i.86/x86/'`/include -include $AUTOCONF_HDIR/autoconf.h $EXTRA_KCFLAGS"
479 AC_TRY_RUN([
480         #define __KERNEL__
481         #include <linux/types.h>
482         #undef __KERNEL__
483         // block include
484         #define __LINUX_POSIX_ACL_H
485
486         # ifdef CONFIG_FS_POSIX_ACL
487         #  ifdef HAVE_XATTR_ACL
488         #   include <linux/xattr_acl.h>
489         #  endif
490         #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
491         #   include <linux/posix_acl_xattr.h>
492         #  endif
493         # endif
494
495         #include <lustre_acl.h>
496
497         #include <stdio.h>
498
499         int main(void)
500         {
501             int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
502             FILE *f = fopen("acl.size","w+");
503             fprintf(f,"%d", size);
504             fclose(f);
505
506             return 0;
507         }
508 ],[
509         acl_size=`cat acl.size`
510         AC_MSG_RESULT([ACL size $acl_size])
511         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
512 ],[
513         AC_ERROR([ACL size can't computed])
514 ])
515 CFLAGS="$tmp_flags"
516 ])
517
518 # added in 2.6.16
519 #
520 AC_DEFUN([LC_STRUCT_INTENT_FILE],
521 [AC_MSG_CHECKING([if struct open_intent has a file field])
522 LB_LINUX_TRY_COMPILE([
523         #include <linux/fs.h>
524         #include <linux/namei.h>
525 ],[
526         struct open_intent intent;
527         &intent.file;
528 ],[
529         AC_MSG_RESULT([yes])
530         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
531 ],[
532         AC_MSG_RESULT([no])
533 ])
534 ])
535
536 #
537 # LC_CAPA_CRYPTO
538 #
539 AC_DEFUN([LC_CAPA_CRYPTO],
540 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
541         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
542 ])
543 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
544         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
545 ])
546 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
547         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
548 ])
549 ])
550
551 #
552 # LC_CONFIG_RMTCLIENT
553 #
554 dnl FIXME
555 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
556 dnl FIXME
557 AC_DEFUN([LC_CONFIG_RMTCLIENT],
558 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
559         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
560 ])
561 ])
562
563 #
564 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
565 #
566 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
567 [AC_MSG_CHECKING([whether to enable gss keyring backend])
568  AC_ARG_ENABLE([gss_keyring],
569                [AC_HELP_STRING([--disable-gss-keyring],
570                                [disable gss keyring backend])],
571                [],[enable_gss_keyring='yes'])
572  AC_MSG_RESULT([$enable_gss_keyring])
573
574  if test x$enable_gss_keyring != xno; then
575         LB_LINUX_CONFIG_IM([KEYS],[],
576                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
577
578         AC_CHECK_LIB([keyutils], [keyctl_search], [],
579                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
580
581         AC_DEFINE([HAVE_GSS_KEYRING], [1],
582                   [Define this if you enable gss keyring backend])
583  fi
584 ])
585
586 AC_DEFUN([LC_SUNRPC_CACHE],
587 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
588 LB_LINUX_TRY_COMPILE([
589         #include <linux/sunrpc/cache.h>
590 ],[
591         struct cache_head ch;
592         &ch.ref.refcount;
593 ],[
594         AC_MSG_RESULT([yes])
595         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
596 ],[
597         AC_MSG_RESULT([no])
598 ])
599 ])
600
601 AC_DEFUN([LC_CONFIG_SUNRPC],
602 [LB_LINUX_CONFIG_IM([SUNRPC],[],
603                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
604  LC_SUNRPC_CACHE
605 ])
606
607 #
608 # LC_CONFIG_GSS (default disabled)
609 #
610 # Build gss and related tools of Lustre. Currently both kernel and user space
611 # parts are depend on linux platform.
612 #
613 AC_DEFUN([LC_CONFIG_GSS],
614 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
615  AC_ARG_ENABLE([gss],
616                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
617                [],[enable_gss='no'])
618  AC_MSG_RESULT([$enable_gss])
619
620  if test x$enable_gss == xyes; then
621         LC_CONFIG_GSS_KEYRING
622         LC_CONFIG_SUNRPC
623
624         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
625
626         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
627                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
628         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
629                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
630         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
631                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
632         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
633                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
634
635         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
636                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
637                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
638                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
639                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
640
641         AC_SUBST(GSSAPI_LIBS)
642
643         AC_KERBEROS_V5
644  fi
645 ])
646
647 #
648 # LC_FUNC_HAVE_CAN_SLEEP_ARG
649 #
650 # 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
651 #
652 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
653 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
654 LB_LINUX_TRY_COMPILE([
655         #include <linux/fs.h>
656 ],[
657         int cansleep;
658         struct file *file;
659         struct file_lock *file_lock;
660         flock_lock_file_wait(file, file_lock, cansleep);
661 ],[
662         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
663                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
664         AC_MSG_RESULT([yes])
665 ],[
666         AC_MSG_RESULT([no])
667 ])
668 ])
669
670 #
671 # LC_FUNC_F_OP_FLOCK
672 #
673 # rhel4.2 kernel has f_op->flock field
674 #
675 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
676 [AC_MSG_CHECKING([if struct file_operations has flock field])
677 LB_LINUX_TRY_COMPILE([
678         #include <linux/fs.h>
679 ],[
680         struct file_operations ll_file_operations_flock;
681         ll_file_operations_flock.flock = NULL;
682 ],[
683         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
684                 [struct file_operations has flock field])
685         AC_MSG_RESULT([yes])
686 ],[
687         AC_MSG_RESULT([no])
688 ])
689 ])
690
691 AC_DEFUN([LC_QUOTA_READ],
692 [AC_MSG_CHECKING([if kernel supports quota_read])
693 LB_LINUX_TRY_COMPILE([
694         #include <linux/fs.h>
695 ],[
696         struct super_operations sp;
697         void *i = (void *)sp.quota_read;
698 ],[
699         AC_MSG_RESULT([yes])
700         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
701 ],[
702         AC_MSG_RESULT([no])
703 ])
704 ])
705
706 #
707 # LC_COOKIE_FOLLOW_LINK
708 #
709 # kernel 2.6.13+ ->follow_link returns a cookie
710 #
711
712 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
713 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
714 LB_LINUX_TRY_COMPILE([
715         #include <linux/fs.h>
716         #include <linux/namei.h>
717 ],[
718         struct dentry dentry;
719         struct nameidata nd;
720
721         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
722 ],[
723         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
724         AC_MSG_RESULT([yes])
725 ],[
726         AC_MSG_RESULT([no])
727 ])
728 ])
729
730 #
731 # LC_FUNC_RCU
732 #
733 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
734 # call_rcu takes three parameters.
735 #
736 AC_DEFUN([LC_FUNC_RCU],
737 [AC_MSG_CHECKING([if kernel have RCU supported])
738 LB_LINUX_TRY_COMPILE([
739         #include <linux/rcupdate.h>
740 ],[],[
741         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
742         AC_MSG_RESULT([yes])
743
744         AC_MSG_CHECKING([if call_rcu takes three parameters])
745         LB_LINUX_TRY_COMPILE([
746                 #include <linux/rcupdate.h>
747         ],[
748                 struct rcu_head rh;
749                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
750         ],[
751                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
752                 AC_MSG_RESULT([yes])
753         ],[
754                 AC_MSG_RESULT([no])
755         ])
756
757 ],[
758         AC_MSG_RESULT([no])
759 ])
760 ])
761
762 AC_DEFUN([LC_PERCPU_COUNTER],
763 [AC_MSG_CHECKING([if have struct percpu_counter defined])
764 LB_LINUX_TRY_COMPILE([
765         #include <linux/percpu_counter.h>
766 ],[],[
767         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
768         AC_MSG_RESULT([yes])
769
770         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
771         LB_LINUX_TRY_COMPILE([
772                 #include <linux/percpu_counter.h>
773         ],[
774                 struct percpu_counter c;
775                 percpu_counter_init(&c, 0);
776         ],[
777                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
778                                                    arguments])
779                 AC_MSG_RESULT([yes])
780         ],[
781                 AC_MSG_RESULT([no])
782         ])
783 ],[
784         AC_MSG_RESULT([no])
785 ])
786 ])
787
788 AC_DEFUN([LC_TASK_CLENV_STORE],
789 [
790         AC_MSG_CHECKING([if we can store cl_env in task_struct])
791         if test x$have_task_clenv_store != xyes ; then
792                 LC_TASK_CLENV_TUX_INFO
793         fi
794 ])
795
796 # ~2.6.11
797
798 AC_DEFUN([LC_S_TIME_GRAN],
799 [AC_MSG_CHECKING([if super block has s_time_gran member])
800 LB_LINUX_TRY_COMPILE([
801         #include <linux/fs.h>
802 ],[
803         struct super_block sb;
804
805         return sb.s_time_gran;
806 ],[
807         AC_MSG_RESULT([yes])
808         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
809 ],[
810         AC_MSG_RESULT([no])
811 ])
812 ])
813
814 AC_DEFUN([LC_SB_TIME_GRAN],
815 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
816 LB_LINUX_TRY_COMPILE([
817         #include <linux/fs.h>
818 ],[
819         return get_sb_time_gran(NULL);
820 ],[
821         AC_MSG_RESULT([yes])
822         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
823 ],[
824         AC_MSG_RESULT([no])
825 ])
826 ])
827
828 # 2.6.12
829
830 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
831 AC_DEFUN([LC_RW_TREE_LOCK],
832 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
833 tmp_flags="$EXTRA_KCFLAGS"
834 EXTRA_KCFLAGS="-Werror"
835 LB_LINUX_TRY_COMPILE([
836         #include <linux/fs.h>
837 ],[
838         struct address_space a;
839
840         write_lock(&a.tree_lock);
841 ],[
842         AC_MSG_RESULT([yes])
843         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
844 ],[
845         AC_MSG_RESULT([no])
846 ])
847 EXTRA_KCFLAGS="$tmp_flags"
848 ])
849
850 # LC_EXPORT_SYNCHRONIZE_RCU
851 # after 2.6.12 synchronize_rcu is preferred over synchronize_kernel
852 AC_DEFUN([LC_EXPORT_SYNCHRONIZE_RCU],
853 [LB_CHECK_SYMBOL_EXPORT([synchronize_rcu],
854 [kernel/rcupdate.c],[
855         AC_DEFINE(HAVE_SYNCHRONIZE_RCU, 1,
856                 [in 2.6.12 synchronize_rcu preferred over synchronize_kernel])
857 ],[
858 ])
859 ])
860
861 # 2.6.15
862
863 # LC_INODE_I_MUTEX
864 # after 2.6.15 inode have i_mutex intead of i_sem
865 AC_DEFUN([LC_INODE_I_MUTEX],
866 [AC_MSG_CHECKING([if inode has i_mutex ])
867 LB_LINUX_TRY_COMPILE([
868         #include <linux/mutex.h>
869         #include <linux/fs.h>
870         #undef i_mutex
871 ],[
872         struct inode i;
873
874         mutex_unlock(&i.i_mutex);
875 ],[
876         AC_MSG_RESULT(yes)
877         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
878                 [after 2.6.15 inode have i_mutex intead of i_sem])
879 ],[
880         AC_MSG_RESULT(no)
881 ])
882 ])
883
884 # 2.6.16
885
886 # LC_SECURITY_PLUG  # for SLES10 SP2
887 # check security plug in sles10 sp2 kernel
888 AC_DEFUN([LC_SECURITY_PLUG],
889 [AC_MSG_CHECKING([If kernel has security plug support])
890 LB_LINUX_TRY_COMPILE([
891         #include <linux/fs.h>
892 ],[
893         struct dentry   *dentry;
894         struct vfsmount *mnt;
895         struct iattr    *iattr;
896
897         notify_change(dentry, mnt, iattr);
898 ],[
899         AC_MSG_RESULT(yes)
900         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
901                 [SLES10 SP2 use extra parameter in vfs])
902 ],[
903         AC_MSG_RESULT(no)
904 ])
905 ])
906
907 # 2.6.17
908
909 # inode have i_private field since 2.6.17
910 AC_DEFUN([LC_INODE_IPRIVATE],
911 [AC_MSG_CHECKING([if inode has a i_private field])
912 LB_LINUX_TRY_COMPILE([
913 #include <linux/fs.h>
914 ],[
915         struct inode i;
916         i.i_private = NULL; 
917 ],[
918         AC_MSG_RESULT(yes)
919         AC_DEFINE(HAVE_INODE_IPRIVATE, 1,
920                 [struct inode has i_private field])
921 ],[
922         AC_MSG_RESULT(no)
923 ])
924 ])
925
926 # LC_DQUOTOFF_MUTEX
927 # after 2.6.17 dquote use mutex instead if semaphore
928 AC_DEFUN([LC_DQUOTOFF_MUTEX],
929 [AC_MSG_CHECKING([use dqonoff_mutex])
930 LB_LINUX_TRY_COMPILE([
931         #include <linux/mutex.h>
932         #include <linux/fs.h>
933         #include <linux/quota.h>
934 ],[
935         struct quota_info dq;
936
937         mutex_unlock(&dq.dqonoff_mutex);
938 ],[
939         AC_MSG_RESULT(yes)
940         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
941                 [after 2.6.17 dquote use mutex instead if semaphore])
942 ],[
943         AC_MSG_RESULT(no)
944 ])
945 ])
946
947 # 2.6.18
948
949 # LC_NR_PAGECACHE
950 # 2.6.18 don't export nr_pagecahe
951 AC_DEFUN([LC_NR_PAGECACHE],
952 [AC_MSG_CHECKING([kernel export nr_pagecache])
953 LB_LINUX_TRY_COMPILE([
954         #include <linux/pagemap.h>
955 ],[
956         return atomic_read(&nr_pagecache);
957 ],[
958         AC_MSG_RESULT(yes)
959         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
960                 [is kernel export nr_pagecache])
961 ],[
962         AC_MSG_RESULT(no)
963 ])
964 ])
965
966 #
967 # LC_STATFS_DENTRY_PARAM
968 # starting from 2.6.18 linux kernel uses dentry instead of
969 # super_block for first vfs_statfs argument
970 #
971 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
972 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
973 LB_LINUX_TRY_COMPILE([
974         #include <linux/fs.h>
975 ],[
976         int vfs_statfs(struct dentry *, struct kstatfs *);
977 ],[
978         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
979                 [first parameter of vfs_statfs is dentry])
980         AC_MSG_RESULT([yes])
981 ],[
982         AC_MSG_RESULT([no])
983 ])
984 ])
985
986 #
987 # LC_VFS_KERN_MOUNT
988 # starting from 2.6.18 kernel don't export do_kern_mount
989 # and want to use vfs_kern_mount instead.
990 #
991 AC_DEFUN([LC_VFS_KERN_MOUNT],
992 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
993 LB_LINUX_TRY_COMPILE([
994         #include <linux/mount.h>
995 ],[
996         vfs_kern_mount(NULL, 0, NULL, NULL);
997 ],[
998         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
999                 [vfs_kern_mount exist in kernel])
1000         AC_MSG_RESULT([yes])
1001 ],[
1002         AC_MSG_RESULT([no])
1003 ])
1004 ])
1005
1006 #
1007 # LC_INVALIDATEPAGE_RETURN_INT
1008 # 2.6.17 changes return type for invalidatepage to 'void' from 'int'
1009 #
1010 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
1011 [AC_MSG_CHECKING([invalidatepage has return int])
1012 LB_LINUX_TRY_COMPILE([
1013         #include <linux/buffer_head.h>
1014 ],[
1015         int rc = block_invalidatepage(NULL, 0);
1016 ],[
1017         AC_MSG_RESULT(yes)
1018         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
1019                 [Define if return type of invalidatepage should be int])
1020 ],[
1021         AC_MSG_RESULT(no)
1022 ])
1023 ])
1024
1025 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
1026 # after 2.6.18 umount_begin has different parameters
1027 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
1028 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
1029 tmp_flags="$EXTRA_KCFLAGS"
1030 EXTRA_KCFLAGS="-Werror"
1031 LB_LINUX_TRY_COMPILE([
1032         #include <linux/fs.h>
1033
1034         struct vfsmount;
1035         static void cfg_umount_begin (struct vfsmount *v, int flags)
1036         {
1037                 ;
1038         }
1039
1040         static struct super_operations cfg_super_operations = {
1041                 .umount_begin   = cfg_umount_begin,
1042         };
1043 ],[
1044         cfg_super_operations.umount_begin(NULL,0);
1045 ],[
1046         AC_MSG_RESULT(yes)
1047         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
1048                 [Define umount_begin need second argument])
1049 ],[
1050         AC_MSG_RESULT(no)
1051 ])
1052 EXTRA_KCFLAGS="$tmp_flags"
1053 ])
1054
1055 # LC_SEQ_LOCK
1056 # after 2.6.18 seq_file has lock intead of sem
1057 AC_DEFUN([LC_SEQ_LOCK],
1058 [AC_MSG_CHECKING([if struct seq_file has lock field])
1059 LB_LINUX_TRY_COMPILE([
1060         #include <linux/seq_file.h>
1061 ],[
1062         struct seq_file seq;
1063
1064         mutex_unlock(&seq.lock);
1065 ],[
1066         AC_MSG_RESULT(yes)
1067         AC_DEFINE(HAVE_SEQ_LOCK, 1,
1068                 [after 2.6.18 seq_file has lock intead of sem])
1069 ],[
1070         AC_MSG_RESULT(NO)
1071 ])
1072 ])
1073
1074 #
1075 # LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1076 #
1077 # No standard kernels export this
1078 #
1079 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1080 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1081 [mm/filemap.c],[
1082 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1083             [filemap_fdatawrite_range is exported by the kernel])
1084 ],[
1085 ])
1086 ])
1087
1088 # LC_FLUSH_OWNER_ID
1089 # starting from 2.6.18 the file_operations .flush
1090 # method has a new "fl_owner_t id" parameter
1091 #
1092 AC_DEFUN([LC_FLUSH_OWNER_ID],
1093 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
1094 LB_LINUX_TRY_COMPILE([
1095         #include <linux/fs.h>
1096 ],[
1097         struct file_operations *fops = NULL;
1098         fl_owner_t id;
1099         int i;
1100
1101         i = fops->flush(NULL, id);
1102 ],[
1103         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
1104                 [file_operations .flush method has an fl_owner_t id])
1105         AC_MSG_RESULT([yes])
1106 ],[
1107         AC_MSG_RESULT([no])
1108 ])
1109 ])
1110
1111 #
1112 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
1113 #
1114 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1115 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1116 #
1117 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1118     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1119          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1120                         [exported invalidate_mapping_pages])],
1121     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1122          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1123                         [exported invalidate_inode_pages])], [
1124        AC_MSG_ERROR([no way to invalidate pages])
1125   ])
1126     ],[])
1127 ])
1128
1129 #2.6.18 + RHEL5 (fc6)
1130
1131 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
1132 AC_DEFUN([LC_PG_FS_MISC],
1133 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1134 LB_LINUX_TRY_COMPILE([
1135         #include <linux/mm.h>
1136         #include <linux/page-flags.h>
1137 ],[
1138         #ifndef PG_fs_misc
1139         #error PG_fs_misc not defined in kernel
1140         #endif
1141 ],[
1142         AC_MSG_RESULT(yes)
1143         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1144                   [is kernel have PG_fs_misc])
1145 ],[
1146         AC_MSG_RESULT(no)
1147 ])
1148 ])
1149
1150 # RHEL5 PageChecked and SetPageChecked defined
1151 AC_DEFUN([LC_PAGE_CHECKED],
1152 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1153 LB_LINUX_TRY_COMPILE([
1154 #ifdef HAVE_LINUX_MMTYPES_H
1155         #include <linux/mm_types.h>
1156 #endif
1157         #include <linux/page-flags.h>
1158 ],[
1159         struct page *p;
1160
1161         /* before 2.6.26 this define*/
1162         #ifndef PageChecked     
1163         /* 2.6.26 use function instead of define for it */
1164         SetPageChecked(p);
1165         PageChecked(p);
1166         #endif
1167 ],[
1168         AC_MSG_RESULT(yes)
1169         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1170                   [does kernel have PageChecked and SetPageChecked])
1171 ],[
1172         AC_MSG_RESULT(no)
1173 ])
1174 ])
1175
1176 #
1177 # LC_LINUX_FIEMAP_H
1178 #
1179 # If we have fiemap.h
1180 # after 2.6.27 use fiemap.h in include/linux
1181 #
1182 AC_DEFUN([LC_LINUX_FIEMAP_H],
1183 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1184         AC_MSG_CHECKING([if fiemap.h can be compiled])
1185         LB_LINUX_TRY_COMPILE([
1186                 #include <linux/types.h>
1187                 #include <linux/fiemap.h>
1188         ],[],[
1189                 AC_MSG_RESULT([yes])
1190                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1191         ],[
1192                 AC_MSG_RESULT([no])
1193         ])
1194 ],
1195 [])
1196 ])
1197
1198 # 2.6.19
1199
1200 # 2.6.19 API changes
1201 # inode don't have i_blksize field
1202 AC_DEFUN([LC_INODE_BLKSIZE],
1203 [AC_MSG_CHECKING([inode has i_blksize field])
1204 LB_LINUX_TRY_COMPILE([
1205 #include <linux/fs.h>
1206 ],[
1207         struct inode i;
1208         i.i_blksize = 0;
1209 ],[
1210         AC_MSG_RESULT(yes)
1211         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1212                 [struct inode has i_blksize field])
1213 ],[
1214         AC_MSG_RESULT(no)
1215 ])
1216 ])
1217
1218 # LC_VFS_READDIR_U64_INO
1219 # 2.6.19 use u64 for inode number instead of inode_t
1220 AC_DEFUN([LC_VFS_READDIR_U64_INO],
1221 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
1222 tmp_flags="$EXTRA_KCFLAGS"
1223 EXTRA_KCFLAGS="-Werror"
1224 LB_LINUX_TRY_COMPILE([
1225 #include <linux/fs.h>
1226         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
1227                       u64 ino, unsigned int d_type)
1228         {
1229                 return 0;
1230         }
1231 ],[
1232         filldir_t filter;
1233
1234         filter = fillonedir;
1235         return 1;
1236 ],[
1237         AC_MSG_RESULT(yes)
1238         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
1239                 [if vfs_readdir need 64bit inode number])
1240 ],[
1241         AC_MSG_RESULT(no)
1242 ])
1243 EXTRA_KCFLAGS="$tmp_flags"
1244 ])
1245
1246 # LC_FILE_WRITEV
1247 # 2.6.19 replaced writev with aio_write
1248 AC_DEFUN([LC_FILE_WRITEV],
1249 [AC_MSG_CHECKING([writev in fops])
1250 LB_LINUX_TRY_COMPILE([
1251         #include <linux/fs.h>
1252 ],[
1253         struct file_operations *fops = NULL;
1254         fops->writev = NULL;
1255 ],[
1256         AC_MSG_RESULT(yes)
1257         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1258                 [use fops->writev])
1259 ],[
1260         AC_MSG_RESULT(no)
1261 ])
1262 ])
1263
1264 # LC_FILE_READV
1265 # 2.6.19 replaced readv with aio_read
1266 AC_DEFUN([LC_FILE_READV],
1267 [AC_MSG_CHECKING([readv in fops])
1268 LB_LINUX_TRY_COMPILE([
1269         #include <linux/fs.h>
1270 ],[
1271         struct file_operations *fops = NULL;
1272         fops->readv = NULL;
1273 ],[
1274         AC_MSG_RESULT(yes)
1275         AC_DEFINE(HAVE_FILE_READV, 1,
1276                 [use fops->readv])
1277 ],[
1278         AC_MSG_RESULT(no)
1279 ])
1280 ])
1281
1282 # 2.6.20
1283
1284 # LC_CANCEL_DIRTY_PAGE
1285 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
1286 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1287         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1288         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
1289         # backport is broken, so ignore it
1290         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
1291            test "$(sed -ne '/^static inline void cancel_dirty_page(struct page \*page, unsigned int account_size)$/,/^}$/p' $OFED_BACKPORT_PATH/linux/mm.h | md5sum)" = "c518cb32d6394760c5bca14cb7538d3e  -"; then
1292                 AC_MSG_RESULT(no)
1293         else
1294                 LB_LINUX_TRY_COMPILE([
1295                         #include <linux/mm.h>
1296                         #include <linux/page-flags.h>
1297 ],[
1298                         cancel_dirty_page(NULL, 0);
1299 ],[
1300                         AC_MSG_RESULT(yes)
1301                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1302                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1303 ],[
1304                         AC_MSG_RESULT(no)
1305 ])
1306         fi
1307 ])
1308
1309 # raid5-zerocopy patch
1310
1311 #
1312 # LC_PAGE_CONSTANT
1313 #
1314 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1315 # it support constant page, which means the page won't be modified during the
1316 # IO.
1317 #
1318 AC_DEFUN([LC_PAGE_CONSTANT],
1319 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1320 LB_LINUX_TRY_COMPILE([
1321         #include <linux/mm.h>
1322         #include <linux/page-flags.h>
1323 ],[
1324         #ifndef PG_constant
1325         #error "Have no raid5 zcopy patch"
1326         #endif
1327 ],[
1328         AC_MSG_RESULT(yes)
1329         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1330 ],[
1331         AC_MSG_RESULT(no);
1332 ])
1333 ])
1334
1335 # 2.6.22
1336
1337 # 2.6.22 lost second parameter for invalidate_bdev
1338 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1339 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1340 LB_LINUX_TRY_COMPILE([
1341         #include <linux/buffer_head.h>
1342 ],[
1343         invalidate_bdev(NULL,0);
1344 ],[
1345         AC_MSG_RESULT([yes])
1346         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1347                 [invalidate_bdev has second argument])
1348 ],[
1349         AC_MSG_RESULT([no])
1350 ])
1351 ])
1352
1353 #
1354 # check for crypto API
1355 #
1356 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1357 [AC_MSG_CHECKING([if kernel has block cipher support])
1358 LB_LINUX_TRY_COMPILE([
1359         #include <linux/err.h>
1360         #include <linux/crypto.h>
1361 ],[
1362         struct crypto_blkcipher *tfm;
1363         tfm = crypto_alloc_blkcipher("aes", 0, 0 );
1364 ],[
1365         AC_MSG_RESULT([yes])
1366         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1367 ],[
1368         AC_MSG_RESULT([no])
1369 ])
1370 ])
1371
1372 #
1373 # check for struct hash_desc
1374 #
1375 AC_DEFUN([LC_STRUCT_HASH_DESC],
1376 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1377 LB_LINUX_TRY_COMPILE([
1378         #include <linux/err.h>
1379         #include <linux/crypto.h>
1380 ],[
1381         struct hash_desc foo;
1382 ],[
1383         AC_MSG_RESULT([yes])
1384         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1385 ],[
1386         AC_MSG_RESULT([no])
1387 ])
1388 ])
1389
1390 #
1391 # check for struct blkcipher_desc
1392 #
1393 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1394 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1395 LB_LINUX_TRY_COMPILE([
1396         #include <linux/err.h>
1397         #include <linux/crypto.h>
1398 ],[
1399         struct blkcipher_desc foo;
1400 ],[
1401         AC_MSG_RESULT([yes])
1402         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1403 ],[
1404         AC_MSG_RESULT([no])
1405 ])
1406 ])
1407
1408 #
1409 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1410 #
1411 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1412 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1413 LB_LINUX_TRY_COMPILE([
1414         #include <linux/fs.h>
1415 ],[
1416         int v = FS_RENAME_DOES_D_MOVE;
1417 ],[
1418         AC_MSG_RESULT([yes])
1419         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1420 ],[
1421         AC_MSG_RESULT([no])
1422 ])
1423 ])
1424
1425 # 2.6.23
1426
1427 # 2.6.23 have return type 'void' for unregister_blkdev
1428 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1429 [AC_MSG_CHECKING([if unregister_blkdev return int])
1430 LB_LINUX_TRY_COMPILE([
1431         #include <linux/fs.h>
1432 ],[
1433         int i = unregister_blkdev(0,NULL);
1434 ],[
1435         AC_MSG_RESULT([yes])
1436         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1437                 [unregister_blkdev return int])
1438 ],[
1439         AC_MSG_RESULT([no])
1440 ])
1441 ])
1442
1443 # 2.6.23 change .sendfile to .splice_read
1444 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1445 [AC_MSG_CHECKING([if kernel has .splice_read])
1446 LB_LINUX_TRY_COMPILE([
1447         #include <linux/fs.h>
1448 ],[
1449         struct file_operations file;
1450
1451         file.splice_read = NULL;
1452 ], [
1453         AC_MSG_RESULT([yes])
1454         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1455                 [kernel has .slice_read])
1456 ],[
1457         AC_MSG_RESULT([no])
1458 ])
1459 ])
1460
1461 # 2.6.23 change .sendfile to .splice_read
1462 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1463 AC_DEFUN([LC_KERNEL_SENDFILE],
1464 [AC_MSG_CHECKING([if kernel has .sendfile])
1465 LB_LINUX_TRY_COMPILE([
1466         #include <linux/fs.h>
1467 ],[
1468         struct file_operations file;
1469
1470         file.sendfile = NULL;
1471 ], [
1472         AC_MSG_RESULT([yes])
1473         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1474                 [kernel has .sendfile])
1475 ],[
1476         AC_MSG_RESULT([no])
1477 ])
1478 ])
1479
1480 # 2.6.23 extract nfs export related data into exportfs.h
1481 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1482 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1483         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1484                 [kernel has include/exportfs.h])
1485 ],[
1486         AC_MSG_RESULT([no])
1487 ])
1488 ])
1489
1490 # 2.6.23 has new page fault handling API
1491 AC_DEFUN([LC_VM_OP_FAULT],
1492 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1493 LB_LINUX_TRY_COMPILE([
1494         #include <linux/mm.h>
1495 ],[
1496         struct vm_operations_struct op;
1497
1498         op.fault = NULL;
1499 ], [
1500         AC_MSG_RESULT([yes])
1501         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1502                 [kernel has .fault in vm_operation_struct])
1503 ],[
1504         AC_MSG_RESULT([no])
1505 ])
1506 ])
1507
1508 # 2.6.23 add code to wait other users to complete before removing procfs entry
1509 AC_DEFUN([LC_PROCFS_USERS],
1510 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1511 LB_LINUX_TRY_COMPILE([
1512         #include <linux/proc_fs.h>
1513 ],[
1514         struct proc_dir_entry pde;
1515
1516         pde.pde_users   = 0;
1517 ],[
1518         AC_MSG_RESULT([yes])
1519         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1520                 [kernel has pde_users member in procfs entry struct])
1521 ],[
1522         AC_MSG_RESULT([no])
1523 ])
1524 ])
1525
1526 # 2.6.23 exports exportfs_decode_fh
1527 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1528 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1529 [fs/exportfs/expfs.c],[
1530         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1531                 [exportfs_decode_fh has been export])
1532 ],[
1533 ])
1534 ])
1535
1536 # 2.6.24
1537
1538 # 2.6.24 need linux/mm_types.h included
1539 AC_DEFUN([LC_HAVE_MMTYPES_H],
1540 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1541         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1542                 [kernel has include/mm_types.h])
1543 ],[
1544         AC_MSG_RESULT([no])
1545 ])
1546 ])
1547
1548 # 2.6.24 has bio_endio with 2 args
1549 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1550 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1551 LB_LINUX_TRY_COMPILE([
1552         #include <linux/bio.h>
1553 ],[
1554         bio_endio(NULL, 0);
1555 ], [
1556         AC_MSG_RESULT([yes])
1557         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1558                 [kernel has bio_endio with 2 args])
1559 ],[
1560         AC_MSG_RESULT([no])
1561 ])
1562 ])
1563
1564 # 2.6.24 has new members in exports struct.
1565 AC_DEFUN([LC_FH_TO_DENTRY],
1566 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1567 LB_LINUX_TRY_COMPILE([
1568 #ifdef HAVE_LINUX_EXPORTFS_H
1569         #include <linux/exportfs.h>
1570 #else
1571         #include <linux/fs.h>
1572 #endif
1573 ],[
1574         struct export_operations exp;
1575
1576         exp.fh_to_dentry   = NULL;
1577 ], [
1578         AC_MSG_RESULT([yes])
1579         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1580                 [kernel has .fh_to_dentry member in export_operations struct])
1581 ],[
1582         AC_MSG_RESULT([no])
1583 ])
1584 ])
1585
1586 # 2.6.24 removes long aged procfs entry -> deleted member
1587 AC_DEFUN([LC_PROCFS_DELETED],
1588 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1589 LB_LINUX_TRY_COMPILE([
1590         #include <linux/proc_fs.h>
1591 ],[
1592         struct proc_dir_entry pde;
1593
1594         pde.deleted   = NULL;
1595 ], [
1596         AC_MSG_RESULT([yes])
1597         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1598                 [kernel has deleted member in procfs entry struct])
1599 ],[
1600         AC_MSG_RESULT([no])
1601 ])
1602 ])
1603
1604 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1605 AC_DEFUN([LC_EXPORT_BDI_INIT],
1606 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1607 [mm/backing-dev.c],[
1608         AC_DEFINE(HAVE_BDI_INIT, 1,
1609                 [bdi_init/bdi_destroy functions are present])
1610 ],[
1611 ])
1612 ])
1613
1614 # 2.6.25
1615
1616 # 2.6.25 change define to inline
1617 AC_DEFUN([LC_MAPPING_CAP_WRITEBACK_DIRTY],
1618 [AC_MSG_CHECKING([if kernel have mapping_cap_writeback_dirty])
1619 LB_LINUX_TRY_COMPILE([
1620         #include <linux/backing-dev.h>
1621 ],[
1622         #ifndef mapping_cap_writeback_dirty
1623         mapping_cap_writeback_dirty(NULL);
1624         #endif
1625 ],[
1626         AC_MSG_RESULT([yes])
1627         AC_DEFINE(HAVE_MAPPING_CAP_WRITEBACK_DIRTY, 1,
1628                 [kernel have mapping_cap_writeback_dirty])
1629 ],[
1630         AC_MSG_RESULT([no])
1631 ])
1632 ])
1633
1634 # 2.6.26
1635
1636 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1637 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1638 [AC_MSG_CHECKING([fs_struct use path structure])
1639 LB_LINUX_TRY_COMPILE([
1640         #include <asm/atomic.h>
1641         #include <linux/spinlock.h>
1642         #include <linux/fs_struct.h>
1643 ],[
1644         struct path path;
1645         struct fs_struct fs;
1646
1647         fs.pwd = path;
1648 ], [
1649         AC_MSG_RESULT([yes])
1650         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1651                 [fs_struct use path structure])
1652 ],[
1653         AC_MSG_RESULT([no])
1654 ])
1655 ])
1656
1657 # 2.6.27
1658
1659 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1660 [AC_MSG_CHECKING([inode_operations->permission has two args])
1661 LB_LINUX_TRY_COMPILE([
1662         #include <linux/fs.h>
1663 ],[
1664         struct inode *inode;
1665
1666         inode->i_op->permission(NULL,0);
1667 ],[
1668         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1, 
1669                   [inode_operations->permission has two args])
1670         AC_MSG_RESULT([yes])
1671 ],[
1672         AC_MSG_RESULT([no])
1673 ])
1674 ])
1675
1676 # 2.6.27 has file_remove_suid instead of remove_suid
1677 AC_DEFUN([LC_FILE_REMOVE_SUID],
1678 [AC_MSG_CHECKING([kernel has file_remove_suid])
1679 LB_LINUX_TRY_COMPILE([
1680         #include <linux/fs.h>
1681 ],[
1682         file_remove_suid(NULL);
1683 ],[
1684         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1685                   [kernel have file_remove_suid])
1686         AC_MSG_RESULT([yes])
1687 ],[
1688         AC_MSG_RESULT([no])
1689 ])
1690 ])
1691
1692 # 2.6.27 have new page locking API
1693 AC_DEFUN([LC_TRYLOCKPAGE],
1694 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1695 LB_LINUX_TRY_COMPILE([
1696         #include <linux/pagemap.h>
1697 ],[
1698         trylock_page(NULL);
1699 ],[
1700         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1701                   [kernel uses trylock_page for page lock])
1702         AC_MSG_RESULT([yes])
1703 ],[
1704         AC_MSG_RESULT([no])
1705 ])
1706 ])
1707
1708 # 2.6.27 removed the read_inode from super_operations.
1709 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1710 [AC_MSG_CHECKING([super_operations has a read_inode field])
1711 LB_LINUX_TRY_COMPILE([
1712         #include <linux/fs.h>
1713 ],[
1714         struct super_operations *sop;
1715         sop->read_inode(NULL);
1716 ],[
1717         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1718                 [super_operations has a read_inode])
1719         AC_MSG_RESULT([yes])
1720 ],[
1721         AC_MSG_RESULT([no])
1722 ])
1723 ])
1724
1725 # 2.6.27 has inode_permission instead of permisson
1726 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1727 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1728 [fs/namei.c],[
1729 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1730             [inode_permission is exported by the kernel])
1731 ],[
1732 ])
1733 ])
1734
1735 # 2.6.27 use 5th parameter in quota_on for remount.
1736 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1737 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1738 LB_LINUX_TRY_COMPILE([
1739         #include <linux/quota.h>
1740 ],[
1741         struct quotactl_ops *qop;
1742         qop->quota_on(NULL, 0, 0, NULL, 0);
1743 ],[
1744         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1745                 [quota_on needs 5 paramters])
1746         AC_MSG_RESULT([yes])
1747 ],[
1748         AC_MSG_RESULT([no])
1749 ])
1750 ])
1751
1752 # 2.6.27 use 3th parameter in quota_off for remount.
1753 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1754 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1755 LB_LINUX_TRY_COMPILE([
1756         #include <linux/quota.h>
1757 ],[
1758         struct quotactl_ops *qop;
1759         qop->quota_off(NULL, 0, 0);
1760 ],[
1761         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1762                 [quota_off needs 3 paramters])
1763         AC_MSG_RESULT([yes])
1764 ],[
1765         AC_MSG_RESULT([no])
1766 ])
1767 ])
1768
1769 # 2.6.27 has vfs_dq_off inline function.
1770 AC_DEFUN([LC_VFS_DQ_OFF],
1771 [AC_MSG_CHECKING([vfs_dq_off is defined])
1772 LB_LINUX_TRY_COMPILE([
1773         #include <linux/quotaops.h>
1774 ],[
1775         vfs_dq_off(NULL, 0);
1776 ],[
1777         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1778         AC_MSG_RESULT([yes])
1779 ],[
1780         AC_MSG_RESULT([no])
1781 ])
1782 ])
1783
1784 # LC_LOCK_MAP_ACQUIRE
1785 # after 2.6.27 lock_map_acquire replaces lock_acquire
1786 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1787 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1788 LB_LINUX_TRY_COMPILE([
1789         #include <linux/lockdep.h>
1790 ],[
1791         lock_map_acquire(NULL);
1792 ],[
1793         AC_MSG_RESULT(yes)
1794         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1795                 [lock_map_acquire is defined])
1796 ],[
1797         AC_MSG_RESULT(no)
1798 ])
1799 ])
1800
1801 # 2.6.27.15-2 sles11
1802
1803 # 2.6.27 sles11 remove the bi_hw_segments
1804 AC_DEFUN([LC_BI_HW_SEGMENTS],
1805 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1806 LB_LINUX_TRY_COMPILE([
1807         #include <linux/bio.h>
1808 ],[
1809         struct bio io;
1810         io.bi_hw_segments = 0;
1811 ],[
1812         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1813                 [struct bio has a bi_hw_segments field])
1814         AC_MSG_RESULT([yes])
1815 ],[
1816         AC_MSG_RESULT([no])
1817 ])
1818 ])
1819
1820 #
1821 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1822 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1823 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1824 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1825         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1826                 [kernel has include/linux/quotaio_v2.h])
1827 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1828                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1829                 [kernel has fs/quotaio_v1.h])
1830 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1831                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1832                 [kernel has fs/quota/quotaio_v2.h])
1833 ],[
1834         AC_MSG_RESULT([no])
1835 ])
1836 ])
1837 ])
1838 ])
1839
1840 # sles10 sp2 need 5 parameter for vfs_symlink
1841 AC_DEFUN([LC_VFS_SYMLINK_5ARGS],
1842 [AC_MSG_CHECKING([vfs_symlink need 5 parameter])
1843 LB_LINUX_TRY_COMPILE([
1844         #include <linux/fs.h>
1845 ],[
1846         struct inode *dir = NULL;
1847         struct dentry *dentry = NULL;
1848         struct vfsmount *mnt = NULL;
1849         const char * path = NULL;
1850         vfs_symlink(dir, dentry, mnt, path, 0);
1851 ],[
1852         AC_DEFINE(HAVE_VFS_SYMLINK_5ARGS, 1,
1853                 [vfs_symlink need 5 parameteres])
1854         AC_MSG_RESULT([yes])
1855 ],[
1856         AC_MSG_RESULT([no])
1857 ])
1858 ])
1859
1860 # 2.6.27 sles11 has sb_any_quota_active
1861 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1862 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1863 LB_LINUX_TRY_COMPILE([
1864         #include <linux/quotaops.h>
1865 ],[
1866         sb_any_quota_active(NULL);
1867 ],[
1868         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1869                 [Kernel has a sb_any_quota_active])
1870         AC_MSG_RESULT([yes])
1871 ],[
1872         AC_MSG_RESULT([no])
1873 ])
1874 ])
1875
1876 # 2.6.27 sles11 has sb_has_quota_active
1877 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1878 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1879 LB_LINUX_TRY_COMPILE([
1880         #include <linux/quotaops.h>
1881 ],[
1882         sb_has_quota_active(NULL, 0);
1883 ],[
1884         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1885                 [Kernel has a sb_has_quota_active])
1886         AC_MSG_RESULT([yes])
1887 ],[
1888         AC_MSG_RESULT([no])
1889 ])
1890 ])
1891
1892 # 2.6.27 exported add_to_page_cache_lru.
1893 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1894 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1895 [mm/filemap.c],[
1896         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1897                 [add_to_page_cache_lru functions are present])
1898 ],[
1899 ])
1900 ])
1901
1902 # 2.6.31
1903
1904 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1905 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1906 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1907 LB_LINUX_TRY_COMPILE([
1908         #include <linux/blkdev.h>
1909 ],[
1910         blk_queue_logical_block_size(NULL, 0);
1911 ],[
1912         AC_MSG_RESULT(yes)
1913         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1914                   [blk_queue_logical_block_size is defined])
1915 ],[
1916         AC_MSG_RESULT(no)
1917 ])
1918 ])
1919
1920 # 2.6.32
1921
1922 # 2.6.32 add a limits member in struct request_queue.
1923 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1924 [AC_MSG_CHECKING([if request_queue has a limits field])
1925 LB_LINUX_TRY_COMPILE([
1926         #include <linux/blkdev.h>
1927 ],[
1928         struct request_queue rq;
1929         rq.limits.io_min = 0;
1930 ],[
1931         AC_MSG_RESULT(yes)
1932         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1933                   [request_queue has a limits field])
1934 ],[
1935         AC_MSG_RESULT(no)
1936 ])
1937 ])
1938
1939 # 2.6.32 has bdi_register() functions.
1940 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1941 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1942 [mm/backing-dev.c],[
1943         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1944                 [bdi_register function is present])
1945 ],[
1946 ])
1947 ])
1948
1949 # 2.6.32 add s_bdi for super block
1950 AC_DEFUN([LC_SB_BDI],
1951 [AC_MSG_CHECKING([if super_block has s_bdi field])
1952 LB_LINUX_TRY_COMPILE([
1953         #include <linux/fs.h>
1954 ],[
1955         struct super_block sb;
1956         sb.s_bdi = NULL;
1957 ],[
1958         AC_MSG_RESULT(yes)
1959         AC_DEFINE(HAVE_SB_BDI, 1,
1960                   [super_block has s_bdi field])
1961 ],[
1962         AC_MSG_RESULT(no)
1963 ])
1964 ])
1965
1966 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1967 # check blk_queue_max_sectors and use it until disappear.
1968 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
1969 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
1970 LB_LINUX_TRY_COMPILE([
1971         #include <linux/blkdev.h>
1972 ],[
1973         blk_queue_max_sectors(NULL, 0);
1974 ],[
1975         AC_MSG_RESULT(yes)
1976         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
1977                   [blk_queue_max_sectors is defined])
1978 ],[
1979         AC_MSG_RESULT(no)
1980 ])
1981 ])
1982
1983 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
1984 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
1985 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
1986 LB_LINUX_TRY_COMPILE([
1987         #include <linux/blkdev.h>
1988 ],[
1989         blk_queue_max_segments(NULL, 0);
1990 ],[
1991         AC_MSG_RESULT(yes)
1992         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
1993                   [blk_queue_max_segments is defined])
1994 ],[
1995         AC_MSG_RESULT(no)
1996 ])
1997 ])
1998
1999 #
2000 # LC_QUOTA64
2001 #
2002 # Check if kernel has been patched for 64-bit quota limits support.
2003 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
2004 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
2005 # that in the absence of quotaio_v1.h in the kernel headers.
2006 #
2007 AC_DEFUN([LC_QUOTA64],[
2008         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
2009 tmp_flags="$EXTRA_KCFLAGS"
2010 EXTRA_KCFLAGS="-I$LINUX/fs"
2011         LB_LINUX_TRY_COMPILE([
2012                 #include <linux/kernel.h>
2013                 #include <linux/fs.h>
2014                 #ifdef HAVE_QUOTAIO_H
2015                 # include <linux/quotaio_v2.h>
2016                 int versions[] = V2_INITQVERSIONS_R1;
2017                 struct v2_disk_dqblk_r1 dqblk_r1;
2018                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
2019                 # include <quota/quotaio_v2.h>
2020                 struct v2r1_disk_dqblk dqblk_r1;
2021                 #elif defined(HAVE_FS_QUOTAIO_H)
2022                 # include <quotaio_v2.h>
2023                 struct v2r1_disk_dqblk dqblk_r1;
2024                 #else
2025                 #include <linux/quota.h>
2026                 int ver = QFMT_VFS_V1;
2027                 #endif
2028         ],[],[
2029                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
2030                 AC_MSG_RESULT([yes])
2031         ],[
2032                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
2033                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
2034                 ],[])
2035                 AC_MSG_RESULT([no])
2036         ])
2037 EXTRA_KCFLAGS=$tmp_flags
2038 ])
2039
2040 #
2041 # LC_D_OBTAIN_ALIAS
2042 # starting from 2.6.28 kernel replaces d_alloc_anon() with
2043 # d_obtain_alias() for getting anonymous dentries
2044 #
2045 AC_DEFUN([LC_D_OBTAIN_ALIAS],
2046 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
2047 LB_LINUX_TRY_COMPILE([
2048         #include <linux/dcache.h>
2049 ],[
2050         d_obtain_alias(NULL);
2051 ],[
2052         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
2053                 [d_obtain_alias exist in kernel])
2054         AC_MSG_RESULT([yes])
2055 ],[
2056         AC_MSG_RESULT([no])
2057 ])
2058 ])
2059
2060 #
2061 # 2.6.38 export blkdev_get_by_dev
2062 #
2063 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
2064 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
2065 [fs/block_dev.c],[
2066 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
2067             [blkdev_get_by_dev is exported by the kernel])
2068 ],[
2069 ])
2070 ])
2071
2072 #
2073 # 2.6.39 remove unplug_fn from request_queue.
2074 #
2075 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
2076 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
2077 LB_LINUX_TRY_COMPILE([
2078         #include <linux/blkdev.h>
2079 ],[
2080         struct request_queue rq;
2081         memset(rq.unplug_fn, 0, sizeof(rq.unplug_fn));
2082 ],[
2083         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
2084                   [request_queue has unplug_fn field]),
2085         AC_MSG_RESULT([yes])
2086 ],[
2087         AC_MSG_RESULT([no])
2088 ])
2089 ])
2090
2091 #
2092 # LC_PROG_LINUX
2093 #
2094 # Lustre linux kernel checks
2095 #
2096 AC_DEFUN([LC_PROG_LINUX],
2097          [LC_LUSTRE_VERSION_H
2098          LC_CONFIG_PINGER
2099          LC_CONFIG_CHECKSUM
2100          LC_CONFIG_LIBLUSTRE_RECOVERY
2101          LC_CONFIG_HEALTH_CHECK_WRITE
2102          LC_CONFIG_LRU_RESIZE
2103          LC_QUOTA_MODULE
2104          LC_LLITE_LLOOP_MODULE
2105
2106          # RHEL4 patches
2107          LC_EXPORT_TRUNCATE_COMPLETE
2108          LC_EXPORT_TRUNCATE_RANGE
2109          LC_EXPORT_D_REHASH_COND
2110          LC_EXPORT___D_REHASH
2111          LC_EXPORT_NODE_TO_CPUMASK
2112
2113          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
2114          LC_STRUCT_STATFS
2115          LC_FILEMAP_POPULATE
2116          LC_D_ADD_UNIQUE
2117          LC_BIT_SPINLOCK_H
2118
2119          LC_XATTR_ACL
2120          LC_POSIX_ACL_XATTR_H
2121          LC_CONST_ACL_SIZE
2122
2123          LC_STRUCT_INTENT_FILE
2124
2125          LC_CAPA_CRYPTO
2126          LC_CONFIG_RMTCLIENT
2127          LC_CONFIG_GSS
2128          LC_FUNC_HAVE_CAN_SLEEP_ARG
2129          LC_FUNC_F_OP_FLOCK
2130          LC_QUOTA_READ
2131          LC_COOKIE_FOLLOW_LINK
2132          LC_FUNC_RCU
2133          LC_PERCPU_COUNTER
2134          LC_TASK_CLENV_STORE
2135
2136          # ~2.6.11
2137          LC_S_TIME_GRAN
2138          LC_SB_TIME_GRAN
2139
2140          # 2.6.12
2141          LC_RW_TREE_LOCK
2142          LC_EXPORT_SYNCHRONIZE_RCU
2143
2144          # 2.6.15
2145          LC_INODE_I_MUTEX
2146
2147          # 2.6.16
2148          LC_SECURITY_PLUG  # for SLES10 SP2
2149
2150          # 2.6.17
2151          LC_INODE_IPRIVATE
2152          LC_DQUOTOFF_MUTEX
2153
2154          # 2.6.18
2155          LC_NR_PAGECACHE
2156          LC_STATFS_DENTRY_PARAM
2157          LC_VFS_KERN_MOUNT
2158          LC_INVALIDATEPAGE_RETURN_INT
2159          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2160          LC_SEQ_LOCK
2161          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
2162          LC_FLUSH_OWNER_ID
2163          if test x$enable_server = xyes ; then
2164                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2165          fi
2166
2167          #2.6.18 + RHEL5 (fc6)
2168          LC_PG_FS_MISC
2169          LC_PAGE_CHECKED
2170          LC_LINUX_FIEMAP_H
2171
2172          # 2.6.19
2173          LC_INODE_BLKSIZE
2174          LC_VFS_READDIR_U64_INO
2175          LC_FILE_WRITEV
2176          LC_FILE_READV
2177
2178          # 2.6.20
2179          LC_CANCEL_DIRTY_PAGE
2180
2181          # raid5-zerocopy patch
2182          LC_PAGE_CONSTANT
2183
2184          # 2.6.22
2185          LC_INVALIDATE_BDEV_2ARG
2186          LC_ASYNC_BLOCK_CIPHER
2187          LC_STRUCT_HASH_DESC
2188          LC_STRUCT_BLKCIPHER_DESC
2189          LC_FS_RENAME_DOES_D_MOVE
2190
2191          # 2.6.23
2192          LC_UNREGISTER_BLKDEV_RETURN_INT
2193          LC_KERNEL_SPLICE_READ
2194          LC_KERNEL_SENDFILE
2195          LC_HAVE_EXPORTFS_H
2196          LC_VM_OP_FAULT
2197          LC_PROCFS_USERS
2198          LC_EXPORTFS_DECODE_FH
2199   
2200          # 2.6.24
2201          LC_HAVE_MMTYPES_H
2202          LC_BIO_ENDIO_2ARG
2203          LC_FH_TO_DENTRY
2204          LC_PROCFS_DELETED
2205          LC_EXPORT_BDI_INIT
2206
2207          #2.6.25
2208          LC_MAPPING_CAP_WRITEBACK_DIRTY
2209   
2210          # 2.6.26
2211          LC_FS_STRUCT_USE_PATH
2212
2213          # 2.6.27
2214          LC_INODE_PERMISION_2ARGS
2215          LC_FILE_REMOVE_SUID
2216          LC_TRYLOCKPAGE
2217          LC_READ_INODE_IN_SBOPS
2218          LC_EXPORT_INODE_PERMISSION
2219          LC_QUOTA_ON_5ARGS
2220          LC_QUOTA_OFF_3ARGS
2221          LC_VFS_DQ_OFF
2222          LC_LOCK_MAP_ACQUIRE
2223
2224          # 2.6.27.15-2 sles11
2225          LC_BI_HW_SEGMENTS
2226          LC_HAVE_QUOTAIO_H
2227          LC_VFS_SYMLINK_5ARGS
2228          LC_SB_ANY_QUOTA_ACTIVE
2229          LC_SB_HAS_QUOTA_ACTIVE
2230          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
2231
2232          # 2.6.31
2233          LC_BLK_QUEUE_LOG_BLK_SIZE
2234
2235          # 2.6.32
2236          LC_REQUEST_QUEUE_LIMITS
2237          LC_EXPORT_BDI_REGISTER
2238          LC_SB_BDI
2239          LC_BLK_QUEUE_MAX_SECTORS
2240          LC_BLK_QUEUE_MAX_SEGMENTS
2241
2242          # 2.6.38
2243          LC_BLKDEV_GET_BY_DEV
2244
2245          # 2.6.39
2246          LC_REQUEST_QUEUE_UNPLUG_FN
2247
2248          #
2249          if test x$enable_server = xyes ; then
2250              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2251              LC_FUNC_DEV_SET_RDONLY
2252              LC_STACK_SIZE
2253              LC_QUOTA64
2254          fi
2255 ])
2256
2257 #
2258 # LC_CONFIG_CLIENT_SERVER
2259 #
2260 # Build client/server sides of Lustre
2261 #
2262 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2263 [AC_MSG_CHECKING([whether to build Lustre server support])
2264 AC_ARG_ENABLE([server],
2265         AC_HELP_STRING([--disable-server],
2266                         [disable Lustre server support]),
2267         [],[enable_server='yes'])
2268 AC_MSG_RESULT([$enable_server])
2269
2270 AC_MSG_CHECKING([whether to build Lustre client support])
2271 AC_ARG_ENABLE([client],
2272         AC_HELP_STRING([--disable-client],
2273                         [disable Lustre client support]),
2274         [],[enable_client='yes'])
2275 AC_MSG_RESULT([$enable_client])])
2276
2277 #
2278 # LC_CONFIG_LIBLUSTRE
2279 #
2280 # whether to build liblustre
2281 #
2282 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2283 [AC_MSG_CHECKING([whether to build Lustre library])
2284 AC_ARG_ENABLE([liblustre],
2285         AC_HELP_STRING([--disable-liblustre],
2286                         [disable building of Lustre library]),
2287         [],[enable_liblustre=$with_sysio])
2288 AC_MSG_RESULT([$enable_liblustre])
2289 # only build sysio if liblustre is built
2290 with_sysio="$enable_liblustre"
2291
2292 AC_MSG_CHECKING([whether to build liblustre tests])
2293 AC_ARG_ENABLE([liblustre-tests],
2294         AC_HELP_STRING([--enable-liblustre-tests],
2295                         [enable liblustre tests, if --disable-tests is used]),
2296         [],[enable_liblustre_tests=$enable_tests])
2297 if test x$enable_liblustre != xyes ; then
2298    enable_liblustre_tests='no'
2299 fi
2300 AC_MSG_RESULT([$enable_liblustre_tests])
2301
2302 AC_MSG_CHECKING([whether to enable liblustre acl])
2303 AC_ARG_ENABLE([liblustre-acl],
2304         AC_HELP_STRING([--disable-liblustre-acl],
2305                         [disable ACL support for liblustre]),
2306         [],[enable_liblustre_acl=yes])
2307 AC_MSG_RESULT([$enable_liblustre_acl])
2308 if test x$enable_liblustre_acl = xyes ; then
2309   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2310 fi
2311
2312 # 2.6.29 change prepare/commit_write to write_begin/end
2313 AC_DEFUN([LC_WRITE_BEGIN_END],
2314 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2315 LB_LINUX_TRY_COMPILE([
2316         #include <linux/fs.h>
2317         #include <linux/pagemap.h>
2318 #ifdef HAVE_LINUX_MMTYPES_H
2319         #include <linux/mm_types.h>
2320 #endif
2321 ],[
2322         struct address_space_operations aops;
2323         struct page *page;
2324
2325         aops.write_begin = NULL;
2326         aops.write_end = NULL;
2327         page = grab_cache_page_write_begin(NULL, 0, 0);
2328 ], [
2329         AC_MSG_RESULT([yes])
2330         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2331                 [kernel has .write_begin/end])
2332 ],[
2333         AC_MSG_RESULT([no])
2334 ])
2335 ])
2336
2337 # 2.6.29 blkdev_put has 2 arguments
2338 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2339 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2340 LB_LINUX_TRY_COMPILE([
2341         #include <linux/fs.h>
2342 ],[
2343         blkdev_put(NULL, 0);
2344 ],[
2345         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2346                 [blkdev_put needs 2 paramters])
2347         AC_MSG_RESULT([yes])
2348 ],[
2349         AC_MSG_RESULT([no])
2350 ])
2351 ])
2352
2353 # 2.6.29 dentry_open has 4 arguments
2354 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2355 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2356 LB_LINUX_TRY_COMPILE([
2357         #include <linux/fs.h>
2358 ],[
2359         dentry_open(NULL, NULL, 0, NULL);
2360 ],[
2361         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2362                 [dentry_open needs 4 paramters])
2363         AC_MSG_RESULT([yes])
2364 ],[
2365         AC_MSG_RESULT([no])
2366 ])
2367 ])
2368
2369 # 2.6.29 split file and anonymous page queues
2370 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2371 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2372 LB_LINUX_TRY_COMPILE([
2373         #include <linux/mm.h>
2374         #include <linux/pagevec.h>
2375 ],[
2376         struct pagevec lru_pagevec;
2377
2378         pagevec_init(&lru_pagevec, 0);
2379         pagevec_lru_add_file(&lru_pagevec);
2380 ],[
2381         AC_MSG_RESULT([yes])
2382         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2383                 [kernel has .pagevec_lru_add_file])
2384 ],[
2385         AC_MSG_RESULT([no])
2386 ])
2387 ])
2388
2389 #
2390 # --enable-mpitest
2391 #
2392 AC_ARG_ENABLE(mpitests,
2393         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2394                            [include mpi tests]),
2395         [
2396          enable_mpitests=yes
2397          case $enableval in
2398          yes)
2399                 MPICC_WRAPPER=mpicc
2400                 ;;
2401          no)
2402                 enable_mpitests=no
2403                 ;;
2404          *)
2405                 MPICC_WRAPPER=$enableval
2406                  ;;
2407          esac
2408         ],
2409         [
2410         MPICC_WRAPPER=mpicc
2411         enable_mpitests=yes
2412         ]
2413 )
2414
2415 if test x$enable_mpitests != xno; then
2416         AC_MSG_CHECKING([whether mpitests can be built])
2417         oldcc=$CC
2418         CC=$MPICC_WRAPPER
2419         AC_LINK_IFELSE(
2420             [AC_LANG_PROGRAM([[
2421                     #include <mpi.h>
2422                 ]],[[
2423                     int flag;
2424                     MPI_Initialized(&flag);
2425                 ]])],
2426             [
2427                     AC_MSG_RESULT([yes])
2428             ],[
2429                     AC_MSG_RESULT([no])
2430                     enable_mpitests=no
2431         ])
2432         CC=$oldcc
2433 fi
2434 AC_SUBST(MPICC_WRAPPER)
2435
2436 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2437 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2438
2439 LC_CONFIG_PINGER
2440 LC_CONFIG_LIBLUSTRE_RECOVERY
2441 ])
2442
2443 #
2444 # LC_CONFIG_QUOTA
2445 #
2446 # whether to enable quota support global control
2447 #
2448 AC_DEFUN([LC_CONFIG_QUOTA],
2449 [AC_ARG_ENABLE([quota],
2450         AC_HELP_STRING([--enable-quota],
2451                         [enable quota support]),
2452         [],[enable_quota='yes'])
2453 ])
2454
2455 AC_DEFUN([LC_QUOTA],
2456 [#check global
2457 LC_CONFIG_QUOTA
2458 #check for utils
2459 AC_CHECK_HEADER(sys/quota.h,
2460                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2461                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2462 ])
2463
2464 #
2465 # LC_CONFIG_SPLIT
2466 #
2467 # whether to enable split support
2468 #
2469 AC_DEFUN([LC_CONFIG_SPLIT],
2470 [AC_MSG_CHECKING([whether to enable split support])
2471 AC_ARG_ENABLE([split],
2472         AC_HELP_STRING([--enable-split],
2473                         [enable split support]),
2474         [],[enable_split='no'])
2475 AC_MSG_RESULT([$enable_split])
2476 if test x$enable_split != xno; then
2477    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2478 fi
2479 ])
2480
2481 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2482 [AC_MSG_CHECKING([tux_info])
2483 LB_LINUX_TRY_COMPILE([
2484         #include <linux/sched.h>
2485 ],[
2486         struct task_struct task;
2487         &task.tux_info;
2488 ],[
2489         AC_MSG_RESULT([yes])
2490         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2491         have_task_clenv_store='yes'
2492 ],[
2493         AC_MSG_RESULT([no])
2494 ])
2495 ])
2496
2497 #
2498 # LC_LLITE_LLOOP_MODULE
2499 # lloop_llite.ko does not currently work with page sizes
2500 # of 64k or larger.
2501 #
2502 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2503 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2504 LB_LINUX_TRY_COMPILE([
2505         #include <asm/page.h>
2506 ],[
2507         #if PAGE_SIZE >= 65536
2508         #error "PAGE_SIZE >= 65536"
2509         #endif
2510 ],[
2511         enable_llite_lloop_module='yes'
2512         AC_MSG_RESULT([yes])
2513 ],[
2514         enable_llite_lloop_module='no'
2515         AC_MSG_RESULT([no])
2516 ])
2517 ])
2518
2519 #
2520 # LC_CONFIGURE
2521 #
2522 # other configure checks
2523 #
2524 AC_DEFUN([LC_CONFIGURE],
2525 [LC_CONFIG_OBD_BUFFER_SIZE
2526
2527 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2528         CFLAGS="$CFLAGS -Werror"
2529 fi
2530
2531 # maximum MDS thread count
2532 LC_MDS_MAX_THREADS
2533
2534 # include/liblustre.h
2535 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2536
2537 # liblustre/llite_lib.h
2538 AC_CHECK_HEADERS([xtio.h file.h])
2539
2540 # liblustre/dir.c
2541 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2542
2543 # liblustre/lutil.c
2544 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2545 AC_CHECK_FUNCS([inet_ntoa])
2546
2547 # libsysio/src/readlink.c
2548 LC_READLINK_SSIZE_T
2549
2550 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2551 AC_CHECK_HEADERS([linux/random.h], [], [],
2552                  [#ifdef HAVE_LINUX_TYPES_H
2553                   # include <linux/types.h>
2554                   #endif
2555                  ])
2556
2557 # utils/llverfs.c
2558 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2559
2560 # check for -lz support
2561 ZLIB=""
2562 AC_CHECK_LIB([z],
2563              [adler32],
2564              [AC_CHECK_HEADERS([zlib.h],
2565                                [ZLIB="-lz"
2566                                 AC_DEFINE([HAVE_ADLER], 1,
2567                                           [support alder32 checksum type])],
2568                                [AC_MSG_WARN([No zlib-devel package found,
2569                                              unable to use adler32 checksum])])],
2570              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2571 )
2572 AC_SUBST(ZLIB)
2573
2574 # Super safe df
2575 AC_ARG_ENABLE([mindf],
2576       AC_HELP_STRING([--enable-mindf],
2577                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2578       [],[])
2579 if test "$enable_mindf" = "yes" ;  then
2580       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2581 fi
2582
2583 AC_ARG_ENABLE([fail_alloc],
2584         AC_HELP_STRING([--disable-fail-alloc],
2585                 [disable randomly alloc failure]),
2586         [],[enable_fail_alloc=yes])
2587 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2588 AC_MSG_RESULT([$enable_fail_alloc])
2589 if test x$enable_fail_alloc != xno ; then
2590         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2591 fi
2592
2593 AC_ARG_ENABLE([invariants],
2594         AC_HELP_STRING([--enable-invariants],
2595                 [enable invariant checking (cpu intensive)]),
2596         [],[])
2597 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2598 AC_MSG_RESULT([$enable_invariants])
2599 if test x$enable_invariants = xyes ; then
2600         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2601 fi
2602
2603 AC_ARG_ENABLE([lu_ref],
2604         AC_HELP_STRING([--enable-lu_ref],
2605                 [enable lu_ref reference tracking code]),
2606         [],[])
2607 AC_MSG_CHECKING([whether to track references with lu_ref])
2608 AC_MSG_RESULT([$enable_lu_ref])
2609 if test x$enable_lu_ref = xyes ; then
2610         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2611 fi
2612
2613 AC_ARG_ENABLE([pgstate-track],
2614               AC_HELP_STRING([--enable-pgstate-track],
2615                              [enable page state tracking]),
2616               [enable_pgstat_track='yes'],[])
2617 AC_MSG_CHECKING([whether to enable page state tracking])
2618 AC_MSG_RESULT([$enable_pgstat_track])
2619 if test x$enable_pgstat_track = xyes ; then
2620         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2621                   [enable page state tracking code])
2622 fi
2623
2624          #2.6.29
2625          LC_WRITE_BEGIN_END
2626          LC_D_OBTAIN_ALIAS
2627          LC_BLKDEV_PUT_2ARGS
2628          LC_DENTRY_OPEN_4ARGS
2629          LC_PAGEVEC_LRU_ADD_FILE
2630
2631 ])
2632
2633 #
2634 # LC_CONDITIONALS
2635 #
2636 # AM_CONDITIONALS for lustre
2637 #
2638 AC_DEFUN([LC_CONDITIONALS],
2639 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2640 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2641 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2642 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2643 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2644 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2645 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2646 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2647 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2648 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2649 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2650 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2651 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2652 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2653 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2654 ])
2655
2656 #
2657 # LC_CONFIG_FILES
2658 #
2659 # files that should be generated with AC_OUTPUT
2660 #
2661 AC_DEFUN([LC_CONFIG_FILES],
2662 [AC_CONFIG_FILES([
2663 lustre/Makefile
2664 lustre/autoMakefile
2665 lustre/autoconf/Makefile
2666 lustre/conf/Makefile
2667 lustre/contrib/Makefile
2668 lustre/doc/Makefile
2669 lustre/include/Makefile
2670 lustre/include/lustre_ver.h
2671 lustre/include/linux/Makefile
2672 lustre/include/lustre/Makefile
2673 lustre/kernel_patches/targets/2.6-rhel6.target
2674 lustre/kernel_patches/targets/2.6-rhel5.target
2675 lustre/kernel_patches/targets/2.6-sles10.target
2676 lustre/kernel_patches/targets/2.6-sles11.target
2677 lustre/kernel_patches/targets/2.6-oel5.target
2678 lustre/kernel_patches/targets/2.6-fc11.target
2679 lustre/kernel_patches/targets/2.6-fc12.target
2680 lustre/ldlm/Makefile
2681 lustre/fid/Makefile
2682 lustre/fid/autoMakefile
2683 lustre/liblustre/Makefile
2684 lustre/liblustre/tests/Makefile
2685 lustre/liblustre/tests/mpi/Makefile
2686 lustre/llite/Makefile
2687 lustre/llite/autoMakefile
2688 lustre/lclient/Makefile
2689 lustre/lov/Makefile
2690 lustre/lov/autoMakefile
2691 lustre/lvfs/Makefile
2692 lustre/lvfs/autoMakefile
2693 lustre/mdc/Makefile
2694 lustre/mdc/autoMakefile
2695 lustre/lmv/Makefile
2696 lustre/lmv/autoMakefile
2697 lustre/mds/Makefile
2698 lustre/mds/autoMakefile
2699 lustre/mdt/Makefile
2700 lustre/mdt/autoMakefile
2701 lustre/cmm/Makefile
2702 lustre/cmm/autoMakefile
2703 lustre/mdd/Makefile
2704 lustre/mdd/autoMakefile
2705 lustre/fld/Makefile
2706 lustre/fld/autoMakefile
2707 lustre/obdclass/Makefile
2708 lustre/obdclass/autoMakefile
2709 lustre/obdclass/linux/Makefile
2710 lustre/obdecho/Makefile
2711 lustre/obdecho/autoMakefile
2712 lustre/obdfilter/Makefile
2713 lustre/obdfilter/autoMakefile
2714 lustre/osc/Makefile
2715 lustre/osc/autoMakefile
2716 lustre/ost/Makefile
2717 lustre/ost/autoMakefile
2718 lustre/osd-ldiskfs/Makefile
2719 lustre/osd-ldiskfs/autoMakefile
2720 lustre/mgc/Makefile
2721 lustre/mgc/autoMakefile
2722 lustre/mgs/Makefile
2723 lustre/mgs/autoMakefile
2724 lustre/ptlrpc/Makefile
2725 lustre/ptlrpc/autoMakefile
2726 lustre/ptlrpc/gss/Makefile
2727 lustre/ptlrpc/gss/autoMakefile
2728 lustre/quota/Makefile
2729 lustre/quota/autoMakefile
2730 lustre/scripts/Makefile
2731 lustre/tests/Makefile
2732 lustre/tests/mpi/Makefile
2733 lustre/utils/Makefile
2734 lustre/utils/gss/Makefile
2735 lustre/obdclass/darwin/Makefile
2736 ])
2737 ])