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LU-335 ldiskfs: SuSE 11 SP1 support for Lustre 2.X
[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 super_block
969 # for the first parameter of the super_operations->statfs() callback.
970 #
971 #
972 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
973 [AC_MSG_CHECKING([if super_ops.statfs() first parameter is dentry])
974 tmp_flags="$EXTRA_KCFLAGS"
975 EXTRA_KCFLAGS="-Werror"
976 LB_LINUX_TRY_COMPILE([
977         #include <linux/fs.h>
978 ],[
979         struct super_operations *sop = NULL;
980         sop->statfs((struct dentry *)0, (struct kstatfs*)0);
981 ],[
982         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
983                 [super_ops.statfs() first parameter is dentry])
984         AC_MSG_RESULT([yes])
985 ],[
986         AC_MSG_RESULT([no])
987 ])
988 EXTRA_KCFLAGS="$tmp_flags"
989 ])
990
991 #
992 # LC_VFS_KERN_MOUNT
993 # starting from 2.6.18 kernel don't export do_kern_mount
994 # and want to use vfs_kern_mount instead.
995 #
996 AC_DEFUN([LC_VFS_KERN_MOUNT],
997 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
998 LB_LINUX_TRY_COMPILE([
999         #include <linux/mount.h>
1000 ],[
1001         vfs_kern_mount(NULL, 0, NULL, NULL);
1002 ],[
1003         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
1004                 [vfs_kern_mount exist in kernel])
1005         AC_MSG_RESULT([yes])
1006 ],[
1007         AC_MSG_RESULT([no])
1008 ])
1009 ])
1010
1011 #
1012 # LC_INVALIDATEPAGE_RETURN_INT
1013 # 2.6.17 changes return type for invalidatepage to 'void' from 'int'
1014 #
1015 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
1016 [AC_MSG_CHECKING([invalidatepage has return int])
1017 LB_LINUX_TRY_COMPILE([
1018         #include <linux/buffer_head.h>
1019 ],[
1020         int rc = block_invalidatepage(NULL, 0);
1021 ],[
1022         AC_MSG_RESULT(yes)
1023         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
1024                 [Define if return type of invalidatepage should be int])
1025 ],[
1026         AC_MSG_RESULT(no)
1027 ])
1028 ])
1029
1030 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
1031 # after 2.6.18 umount_begin has different parameters
1032 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
1033 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
1034 tmp_flags="$EXTRA_KCFLAGS"
1035 EXTRA_KCFLAGS="-Werror"
1036 LB_LINUX_TRY_COMPILE([
1037         #include <linux/fs.h>
1038
1039         struct vfsmount;
1040         static void cfg_umount_begin (struct vfsmount *v, int flags)
1041         {
1042                 ;
1043         }
1044
1045         static struct super_operations cfg_super_operations = {
1046                 .umount_begin   = cfg_umount_begin,
1047         };
1048 ],[
1049         cfg_super_operations.umount_begin(NULL,0);
1050 ],[
1051         AC_MSG_RESULT(yes)
1052         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
1053                 [Define umount_begin need second argument])
1054 ],[
1055         AC_MSG_RESULT(no)
1056 ])
1057 EXTRA_KCFLAGS="$tmp_flags"
1058 ])
1059
1060 # LC_SEQ_LOCK
1061 # after 2.6.18 seq_file has lock intead of sem
1062 AC_DEFUN([LC_SEQ_LOCK],
1063 [AC_MSG_CHECKING([if struct seq_file has lock field])
1064 LB_LINUX_TRY_COMPILE([
1065         #include <linux/seq_file.h>
1066 ],[
1067         struct seq_file seq;
1068
1069         mutex_unlock(&seq.lock);
1070 ],[
1071         AC_MSG_RESULT(yes)
1072         AC_DEFINE(HAVE_SEQ_LOCK, 1,
1073                 [after 2.6.18 seq_file has lock intead of sem])
1074 ],[
1075         AC_MSG_RESULT(NO)
1076 ])
1077 ])
1078
1079 #
1080 # LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1081 #
1082 # No standard kernels export this
1083 #
1084 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1085 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1086 [mm/filemap.c],[
1087 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1088             [filemap_fdatawrite_range is exported by the kernel])
1089 ],[
1090 ])
1091 ])
1092
1093 # LC_FLUSH_OWNER_ID
1094 # starting from 2.6.18 the file_operations .flush
1095 # method has a new "fl_owner_t id" parameter
1096 #
1097 AC_DEFUN([LC_FLUSH_OWNER_ID],
1098 [AC_MSG_CHECKING([if file_operations .flush has an fl_owner_t id])
1099 LB_LINUX_TRY_COMPILE([
1100         #include <linux/fs.h>
1101 ],[
1102         struct file_operations *fops = NULL;
1103         fl_owner_t id;
1104         int i;
1105
1106         i = fops->flush(NULL, id);
1107 ],[
1108         AC_DEFINE(HAVE_FLUSH_OWNER_ID, 1,
1109                 [file_operations .flush method has an fl_owner_t id])
1110         AC_MSG_RESULT([yes])
1111 ],[
1112         AC_MSG_RESULT([no])
1113 ])
1114 ])
1115
1116 #
1117 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
1118 #
1119 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1120 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1121 #
1122 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1123     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1124          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1125                         [exported invalidate_mapping_pages])],
1126     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1127          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1128                         [exported invalidate_inode_pages])], [
1129        AC_MSG_ERROR([no way to invalidate pages])
1130   ])
1131     ],[])
1132 ])
1133
1134 #2.6.18 + RHEL5 (fc6)
1135
1136 # RHEL5 in FS-cache patch rename PG_checked flag into PG_fs_misc
1137 AC_DEFUN([LC_PG_FS_MISC],
1138 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1139 LB_LINUX_TRY_COMPILE([
1140         #include <linux/mm.h>
1141         #include <linux/page-flags.h>
1142 ],[
1143         #ifndef PG_fs_misc
1144         #error PG_fs_misc not defined in kernel
1145         #endif
1146 ],[
1147         AC_MSG_RESULT(yes)
1148         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1149                   [is kernel have PG_fs_misc])
1150 ],[
1151         AC_MSG_RESULT(no)
1152 ])
1153 ])
1154
1155 # RHEL5 PageChecked and SetPageChecked defined
1156 AC_DEFUN([LC_PAGE_CHECKED],
1157 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1158 LB_LINUX_TRY_COMPILE([
1159 #ifdef HAVE_LINUX_MMTYPES_H
1160         #include <linux/mm_types.h>
1161 #endif
1162         #include <linux/page-flags.h>
1163 ],[
1164         struct page *p;
1165
1166         /* before 2.6.26 this define*/
1167         #ifndef PageChecked     
1168         /* 2.6.26 use function instead of define for it */
1169         SetPageChecked(p);
1170         PageChecked(p);
1171         #endif
1172 ],[
1173         AC_MSG_RESULT(yes)
1174         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1175                   [does kernel have PageChecked and SetPageChecked])
1176 ],[
1177         AC_MSG_RESULT(no)
1178 ])
1179 ])
1180
1181 #
1182 # LC_LINUX_FIEMAP_H
1183 #
1184 # If we have fiemap.h
1185 # after 2.6.27 use fiemap.h in include/linux
1186 #
1187 AC_DEFUN([LC_LINUX_FIEMAP_H],
1188 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
1189         AC_MSG_CHECKING([if fiemap.h can be compiled])
1190         LB_LINUX_TRY_COMPILE([
1191                 #include <linux/types.h>
1192                 #include <linux/fiemap.h>
1193         ],[],[
1194                 AC_MSG_RESULT([yes])
1195                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
1196         ],[
1197                 AC_MSG_RESULT([no])
1198         ])
1199 ],
1200 [])
1201 ])
1202
1203 # 2.6.19
1204
1205 # 2.6.19 API changes
1206 # inode don't have i_blksize field
1207 AC_DEFUN([LC_INODE_BLKSIZE],
1208 [AC_MSG_CHECKING([inode has i_blksize field])
1209 LB_LINUX_TRY_COMPILE([
1210 #include <linux/fs.h>
1211 ],[
1212         struct inode i;
1213         i.i_blksize = 0;
1214 ],[
1215         AC_MSG_RESULT(yes)
1216         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1217                 [struct inode has i_blksize field])
1218 ],[
1219         AC_MSG_RESULT(no)
1220 ])
1221 ])
1222
1223 # LC_VFS_READDIR_U64_INO
1224 # 2.6.19 use u64 for inode number instead of inode_t
1225 AC_DEFUN([LC_VFS_READDIR_U64_INO],
1226 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
1227 tmp_flags="$EXTRA_KCFLAGS"
1228 EXTRA_KCFLAGS="-Werror"
1229 LB_LINUX_TRY_COMPILE([
1230 #include <linux/fs.h>
1231         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
1232                       u64 ino, unsigned int d_type)
1233         {
1234                 return 0;
1235         }
1236 ],[
1237         filldir_t filter;
1238
1239         filter = fillonedir;
1240         return 1;
1241 ],[
1242         AC_MSG_RESULT(yes)
1243         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
1244                 [if vfs_readdir need 64bit inode number])
1245 ],[
1246         AC_MSG_RESULT(no)
1247 ])
1248 EXTRA_KCFLAGS="$tmp_flags"
1249 ])
1250
1251 # LC_FILE_WRITEV
1252 # 2.6.19 replaced writev with aio_write
1253 AC_DEFUN([LC_FILE_WRITEV],
1254 [AC_MSG_CHECKING([writev in fops])
1255 LB_LINUX_TRY_COMPILE([
1256         #include <linux/fs.h>
1257 ],[
1258         struct file_operations *fops = NULL;
1259         fops->writev = NULL;
1260 ],[
1261         AC_MSG_RESULT(yes)
1262         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1263                 [use fops->writev])
1264 ],[
1265         AC_MSG_RESULT(no)
1266 ])
1267 ])
1268
1269 # LC_FILE_READV
1270 # 2.6.19 replaced readv with aio_read
1271 AC_DEFUN([LC_FILE_READV],
1272 [AC_MSG_CHECKING([readv in fops])
1273 LB_LINUX_TRY_COMPILE([
1274         #include <linux/fs.h>
1275 ],[
1276         struct file_operations *fops = NULL;
1277         fops->readv = NULL;
1278 ],[
1279         AC_MSG_RESULT(yes)
1280         AC_DEFINE(HAVE_FILE_READV, 1,
1281                 [use fops->readv])
1282 ],[
1283         AC_MSG_RESULT(no)
1284 ])
1285 ])
1286
1287 # 2.6.20
1288
1289 # LC_CANCEL_DIRTY_PAGE
1290 # 2.6.20 introduced cancel_dirty_page instead of clear_page_dirty.
1291 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1292         [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1293         # the implementation of cancel_dirty_page in OFED 1.4.1's SLES10 SP2
1294         # backport is broken, so ignore it
1295         if test -f $OFED_BACKPORT_PATH/linux/mm.h &&
1296            test "$(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
1297                 AC_MSG_RESULT(no)
1298         else
1299                 LB_LINUX_TRY_COMPILE([
1300                         #include <linux/mm.h>
1301                         #include <linux/page-flags.h>
1302 ],[
1303                         cancel_dirty_page(NULL, 0);
1304 ],[
1305                         AC_MSG_RESULT(yes)
1306                         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1307                                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1308 ],[
1309                         AC_MSG_RESULT(no)
1310 ])
1311         fi
1312 ])
1313
1314 # raid5-zerocopy patch
1315
1316 #
1317 # LC_PAGE_CONSTANT
1318 #
1319 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1320 # it support constant page, which means the page won't be modified during the
1321 # IO.
1322 #
1323 AC_DEFUN([LC_PAGE_CONSTANT],
1324 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1325 LB_LINUX_TRY_COMPILE([
1326         #include <linux/mm.h>
1327         #include <linux/page-flags.h>
1328 ],[
1329         #ifndef PG_constant
1330         #error "Have no raid5 zcopy patch"
1331         #endif
1332 ],[
1333         AC_MSG_RESULT(yes)
1334         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1335 ],[
1336         AC_MSG_RESULT(no);
1337 ])
1338 ])
1339
1340 # 2.6.22
1341
1342 # 2.6.22 lost second parameter for invalidate_bdev
1343 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1344 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1345 LB_LINUX_TRY_COMPILE([
1346         #include <linux/buffer_head.h>
1347 ],[
1348         invalidate_bdev(NULL,0);
1349 ],[
1350         AC_MSG_RESULT([yes])
1351         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1352                 [invalidate_bdev has second argument])
1353 ],[
1354         AC_MSG_RESULT([no])
1355 ])
1356 ])
1357
1358 #
1359 # check for crypto API
1360 #
1361 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1362 [AC_MSG_CHECKING([if kernel has block cipher support])
1363 LB_LINUX_TRY_COMPILE([
1364         #include <linux/err.h>
1365         #include <linux/crypto.h>
1366 ],[
1367         struct crypto_blkcipher *tfm;
1368         tfm = crypto_alloc_blkcipher("aes", 0, 0 );
1369 ],[
1370         AC_MSG_RESULT([yes])
1371         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1372 ],[
1373         AC_MSG_RESULT([no])
1374 ])
1375 ])
1376
1377 #
1378 # check for struct hash_desc
1379 #
1380 AC_DEFUN([LC_STRUCT_HASH_DESC],
1381 [AC_MSG_CHECKING([if kernel has struct hash_desc])
1382 LB_LINUX_TRY_COMPILE([
1383         #include <linux/err.h>
1384         #include <linux/crypto.h>
1385 ],[
1386         struct hash_desc foo;
1387 ],[
1388         AC_MSG_RESULT([yes])
1389         AC_DEFINE(HAVE_STRUCT_HASH_DESC, 1, [kernel has struct hash_desc])
1390 ],[
1391         AC_MSG_RESULT([no])
1392 ])
1393 ])
1394
1395 #
1396 # check for struct blkcipher_desc
1397 #
1398 AC_DEFUN([LC_STRUCT_BLKCIPHER_DESC],
1399 [AC_MSG_CHECKING([if kernel has struct blkcipher_desc])
1400 LB_LINUX_TRY_COMPILE([
1401         #include <linux/err.h>
1402         #include <linux/crypto.h>
1403 ],[
1404         struct blkcipher_desc foo;
1405 ],[
1406         AC_MSG_RESULT([yes])
1407         AC_DEFINE(HAVE_STRUCT_BLKCIPHER_DESC, 1, [kernel has struct blkcipher_desc])
1408 ],[
1409         AC_MSG_RESULT([no])
1410 ])
1411 ])
1412
1413 #
1414 # 2.6.19 check for FS_RENAME_DOES_D_MOVE flag
1415 #
1416 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1417 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1418 LB_LINUX_TRY_COMPILE([
1419         #include <linux/fs.h>
1420 ],[
1421         int v = FS_RENAME_DOES_D_MOVE;
1422 ],[
1423         AC_MSG_RESULT([yes])
1424         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1425 ],[
1426         AC_MSG_RESULT([no])
1427 ])
1428 ])
1429
1430 # 2.6.23
1431
1432 # 2.6.23 have return type 'void' for unregister_blkdev
1433 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1434 [AC_MSG_CHECKING([if unregister_blkdev return int])
1435 LB_LINUX_TRY_COMPILE([
1436         #include <linux/fs.h>
1437 ],[
1438         int i = unregister_blkdev(0,NULL);
1439 ],[
1440         AC_MSG_RESULT([yes])
1441         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1442                 [unregister_blkdev return int])
1443 ],[
1444         AC_MSG_RESULT([no])
1445 ])
1446 ])
1447
1448 # 2.6.23 change .sendfile to .splice_read
1449 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1450 [AC_MSG_CHECKING([if kernel has .splice_read])
1451 LB_LINUX_TRY_COMPILE([
1452         #include <linux/fs.h>
1453 ],[
1454         struct file_operations file;
1455
1456         file.splice_read = NULL;
1457 ], [
1458         AC_MSG_RESULT([yes])
1459         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1460                 [kernel has .slice_read])
1461 ],[
1462         AC_MSG_RESULT([no])
1463 ])
1464 ])
1465
1466 # 2.6.23 change .sendfile to .splice_read
1467 # RHEL4 (-92 kernel) have both sendfile and .splice_read API
1468 AC_DEFUN([LC_KERNEL_SENDFILE],
1469 [AC_MSG_CHECKING([if kernel has .sendfile])
1470 LB_LINUX_TRY_COMPILE([
1471         #include <linux/fs.h>
1472 ],[
1473         struct file_operations file;
1474
1475         file.sendfile = NULL;
1476 ], [
1477         AC_MSG_RESULT([yes])
1478         AC_DEFINE(HAVE_KERNEL_SENDFILE, 1,
1479                 [kernel has .sendfile])
1480 ],[
1481         AC_MSG_RESULT([no])
1482 ])
1483 ])
1484
1485 # 2.6.23 extract nfs export related data into exportfs.h
1486 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1487 [LB_CHECK_FILE([$LINUX/include/linux/exportfs.h], [
1488         AC_DEFINE(HAVE_LINUX_EXPORTFS_H, 1,
1489                 [kernel has include/exportfs.h])
1490 ],[
1491         AC_MSG_RESULT([no])
1492 ])
1493 ])
1494
1495 # 2.6.23 has new page fault handling API
1496 AC_DEFUN([LC_VM_OP_FAULT],
1497 [AC_MSG_CHECKING([kernel has .fault in vm_operation_struct])
1498 LB_LINUX_TRY_COMPILE([
1499         #include <linux/mm.h>
1500 ],[
1501         struct vm_operations_struct op;
1502
1503         op.fault = NULL;
1504 ], [
1505         AC_MSG_RESULT([yes])
1506         AC_DEFINE(HAVE_VM_OP_FAULT, 1,
1507                 [kernel has .fault in vm_operation_struct])
1508 ],[
1509         AC_MSG_RESULT([no])
1510 ])
1511 ])
1512
1513 # 2.6.23 add code to wait other users to complete before removing procfs entry
1514 AC_DEFUN([LC_PROCFS_USERS],
1515 [AC_MSG_CHECKING([if kernel has pde_users member in procfs entry struct])
1516 LB_LINUX_TRY_COMPILE([
1517         #include <linux/proc_fs.h>
1518 ],[
1519         struct proc_dir_entry pde;
1520
1521         pde.pde_users   = 0;
1522 ],[
1523         AC_MSG_RESULT([yes])
1524         AC_DEFINE(HAVE_PROCFS_USERS, 1,
1525                 [kernel has pde_users member in procfs entry struct])
1526 ],[
1527         AC_MSG_RESULT([no])
1528 ])
1529 ])
1530
1531 # 2.6.23 exports exportfs_decode_fh
1532 AC_DEFUN([LC_EXPORTFS_DECODE_FH],
1533 [LB_CHECK_SYMBOL_EXPORT([exportfs_decode_fh],
1534 [fs/exportfs/expfs.c],[
1535         AC_DEFINE(HAVE_EXPORTFS_DECODE_FH, 1,
1536                 [exportfs_decode_fh has been export])
1537 ],[
1538 ])
1539 ])
1540
1541 # 2.6.24
1542
1543 # 2.6.24 need linux/mm_types.h included
1544 AC_DEFUN([LC_HAVE_MMTYPES_H],
1545 [LB_CHECK_FILE([$LINUX/include/linux/mm_types.h], [
1546         AC_DEFINE(HAVE_LINUX_MMTYPES_H, 1,
1547                 [kernel has include/mm_types.h])
1548 ],[
1549         AC_MSG_RESULT([no])
1550 ])
1551 ])
1552
1553 # 2.6.24 has bio_endio with 2 args
1554 AC_DEFUN([LC_BIO_ENDIO_2ARG],
1555 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
1556 LB_LINUX_TRY_COMPILE([
1557         #include <linux/bio.h>
1558 ],[
1559         bio_endio(NULL, 0);
1560 ], [
1561         AC_MSG_RESULT([yes])
1562         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
1563                 [kernel has bio_endio with 2 args])
1564 ],[
1565         AC_MSG_RESULT([no])
1566 ])
1567 ])
1568
1569 # 2.6.24 has new members in exports struct.
1570 AC_DEFUN([LC_FH_TO_DENTRY],
1571 [AC_MSG_CHECKING([if kernel has .fh_to_dentry member in export_operations struct])
1572 LB_LINUX_TRY_COMPILE([
1573 #ifdef HAVE_LINUX_EXPORTFS_H
1574         #include <linux/exportfs.h>
1575 #else
1576         #include <linux/fs.h>
1577 #endif
1578 ],[
1579         struct export_operations exp;
1580
1581         exp.fh_to_dentry   = NULL;
1582 ], [
1583         AC_MSG_RESULT([yes])
1584         AC_DEFINE(HAVE_FH_TO_DENTRY, 1,
1585                 [kernel has .fh_to_dentry member in export_operations struct])
1586 ],[
1587         AC_MSG_RESULT([no])
1588 ])
1589 ])
1590
1591 # 2.6.24 removes long aged procfs entry -> deleted member
1592 AC_DEFUN([LC_PROCFS_DELETED],
1593 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
1594 LB_LINUX_TRY_COMPILE([
1595         #include <linux/proc_fs.h>
1596 ],[
1597         struct proc_dir_entry pde;
1598
1599         pde.deleted   = NULL;
1600 ], [
1601         AC_MSG_RESULT([yes])
1602         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
1603                 [kernel has deleted member in procfs entry struct])
1604 ],[
1605         AC_MSG_RESULT([no])
1606 ])
1607 ])
1608
1609 # 2.6.24 has bdi_init()/bdi_destroy() functions.
1610 AC_DEFUN([LC_EXPORT_BDI_INIT],
1611 [LB_CHECK_SYMBOL_EXPORT([bdi_init],
1612 [mm/backing-dev.c],[
1613         AC_DEFINE(HAVE_BDI_INIT, 1,
1614                 [bdi_init/bdi_destroy functions are present])
1615 ],[
1616 ])
1617 ])
1618
1619 # 2.6.25
1620
1621 # 2.6.25 change define to inline
1622 AC_DEFUN([LC_MAPPING_CAP_WRITEBACK_DIRTY],
1623 [AC_MSG_CHECKING([if kernel have mapping_cap_writeback_dirty])
1624 LB_LINUX_TRY_COMPILE([
1625         #include <linux/backing-dev.h>
1626 ],[
1627         #ifndef mapping_cap_writeback_dirty
1628         mapping_cap_writeback_dirty(NULL);
1629         #endif
1630 ],[
1631         AC_MSG_RESULT([yes])
1632         AC_DEFINE(HAVE_MAPPING_CAP_WRITEBACK_DIRTY, 1,
1633                 [kernel have mapping_cap_writeback_dirty])
1634 ],[
1635         AC_MSG_RESULT([no])
1636 ])
1637 ])
1638
1639 # 2.6.26
1640
1641 # 2.6.26 isn't export set_fs_pwd and change paramter in fs struct
1642 AC_DEFUN([LC_FS_STRUCT_USE_PATH],
1643 [AC_MSG_CHECKING([fs_struct use path structure])
1644 LB_LINUX_TRY_COMPILE([
1645         #include <asm/atomic.h>
1646         #include <linux/spinlock.h>
1647         #include <linux/fs_struct.h>
1648 ],[
1649         struct path path;
1650         struct fs_struct fs;
1651
1652         fs.pwd = path;
1653 ], [
1654         AC_MSG_RESULT([yes])
1655         AC_DEFINE(HAVE_FS_STRUCT_USE_PATH, 1,
1656                 [fs_struct use path structure])
1657 ],[
1658         AC_MSG_RESULT([no])
1659 ])
1660 ])
1661
1662 # 2.6.27
1663
1664 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
1665 [AC_MSG_CHECKING([inode_operations->permission has two args])
1666 LB_LINUX_TRY_COMPILE([
1667         #include <linux/fs.h>
1668 ],[
1669         struct inode *inode;
1670
1671         inode->i_op->permission(NULL,0);
1672 ],[
1673         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1, 
1674                   [inode_operations->permission has two args])
1675         AC_MSG_RESULT([yes])
1676 ],[
1677         AC_MSG_RESULT([no])
1678 ])
1679 ])
1680
1681 # 2.6.27 has file_remove_suid instead of remove_suid
1682 AC_DEFUN([LC_FILE_REMOVE_SUID],
1683 [AC_MSG_CHECKING([kernel has file_remove_suid])
1684 LB_LINUX_TRY_COMPILE([
1685         #include <linux/fs.h>
1686 ],[
1687         file_remove_suid(NULL);
1688 ],[
1689         AC_DEFINE(HAVE_FILE_REMOVE_SUID, 1,
1690                   [kernel have file_remove_suid])
1691         AC_MSG_RESULT([yes])
1692 ],[
1693         AC_MSG_RESULT([no])
1694 ])
1695 ])
1696
1697 # 2.6.27 have new page locking API
1698 AC_DEFUN([LC_TRYLOCKPAGE],
1699 [AC_MSG_CHECKING([kernel uses trylock_page for page lock])
1700 LB_LINUX_TRY_COMPILE([
1701         #include <linux/pagemap.h>
1702 ],[
1703         trylock_page(NULL);
1704 ],[
1705         AC_DEFINE(HAVE_TRYLOCK_PAGE, 1,
1706                   [kernel uses trylock_page for page lock])
1707         AC_MSG_RESULT([yes])
1708 ],[
1709         AC_MSG_RESULT([no])
1710 ])
1711 ])
1712
1713 # 2.6.27 removed the read_inode from super_operations.
1714 AC_DEFUN([LC_READ_INODE_IN_SBOPS],
1715 [AC_MSG_CHECKING([super_operations has a read_inode field])
1716 LB_LINUX_TRY_COMPILE([
1717         #include <linux/fs.h>
1718 ],[
1719         struct super_operations *sop;
1720         sop->read_inode(NULL);
1721 ],[
1722         AC_DEFINE(HAVE_READ_INODE_IN_SBOPS, 1,
1723                 [super_operations has a read_inode])
1724         AC_MSG_RESULT([yes])
1725 ],[
1726         AC_MSG_RESULT([no])
1727 ])
1728 ])
1729
1730 # 2.6.27 has inode_permission instead of permisson
1731 AC_DEFUN([LC_EXPORT_INODE_PERMISSION],
1732 [LB_CHECK_SYMBOL_EXPORT([inode_permission],
1733 [fs/namei.c],[
1734 AC_DEFINE(HAVE_EXPORT_INODE_PERMISSION, 1,
1735             [inode_permission is exported by the kernel])
1736 ],[
1737 ])
1738 ])
1739
1740 # 2.6.27 use 5th parameter in quota_on for remount.
1741 AC_DEFUN([LC_QUOTA_ON_5ARGS],
1742 [AC_MSG_CHECKING([quota_on needs 5 parameters])
1743 LB_LINUX_TRY_COMPILE([
1744         #include <linux/quota.h>
1745 ],[
1746         struct quotactl_ops *qop;
1747         qop->quota_on(NULL, 0, 0, NULL, 0);
1748 ],[
1749         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
1750                 [quota_on needs 5 paramters])
1751         AC_MSG_RESULT([yes])
1752 ],[
1753         AC_MSG_RESULT([no])
1754 ])
1755 ])
1756
1757 # 2.6.27 use 3th parameter in quota_off for remount.
1758 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
1759 [AC_MSG_CHECKING([quota_off needs 3 parameters])
1760 LB_LINUX_TRY_COMPILE([
1761         #include <linux/quota.h>
1762 ],[
1763         struct quotactl_ops *qop;
1764         qop->quota_off(NULL, 0, 0);
1765 ],[
1766         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
1767                 [quota_off needs 3 paramters])
1768         AC_MSG_RESULT([yes])
1769 ],[
1770         AC_MSG_RESULT([no])
1771 ])
1772 ])
1773
1774 # 2.6.27 has vfs_dq_off inline function.
1775 AC_DEFUN([LC_VFS_DQ_OFF],
1776 [AC_MSG_CHECKING([vfs_dq_off is defined])
1777 LB_LINUX_TRY_COMPILE([
1778         #include <linux/quotaops.h>
1779 ],[
1780         vfs_dq_off(NULL, 0);
1781 ],[
1782         AC_DEFINE(HAVE_VFS_DQ_OFF, 1, [vfs_dq_off is defined])
1783         AC_MSG_RESULT([yes])
1784 ],[
1785         AC_MSG_RESULT([no])
1786 ])
1787 ])
1788
1789 # LC_LOCK_MAP_ACQUIRE
1790 # after 2.6.27 lock_map_acquire replaces lock_acquire
1791 AC_DEFUN([LC_LOCK_MAP_ACQUIRE],
1792 [AC_MSG_CHECKING([if lock_map_acquire is defined])
1793 LB_LINUX_TRY_COMPILE([
1794         #include <linux/lockdep.h>
1795 ],[
1796         lock_map_acquire(NULL);
1797 ],[
1798         AC_MSG_RESULT(yes)
1799         AC_DEFINE(HAVE_LOCK_MAP_ACQUIRE, 1,
1800                 [lock_map_acquire is defined])
1801 ],[
1802         AC_MSG_RESULT(no)
1803 ])
1804 ])
1805
1806 # 2.6.27.15-2 sles11
1807
1808 # 2.6.27 sles11 remove the bi_hw_segments
1809 AC_DEFUN([LC_BI_HW_SEGMENTS],
1810 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
1811 LB_LINUX_TRY_COMPILE([
1812         #include <linux/bio.h>
1813 ],[
1814         struct bio io;
1815         io.bi_hw_segments = 0;
1816 ],[
1817         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
1818                 [struct bio has a bi_hw_segments field])
1819         AC_MSG_RESULT([yes])
1820 ],[
1821         AC_MSG_RESULT([no])
1822 ])
1823 ])
1824
1825 #
1826 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
1827 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
1828 AC_DEFUN([LC_HAVE_QUOTAIO_H],
1829 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
1830         AC_DEFINE(HAVE_QUOTAIO_H, 1,
1831                 [kernel has include/linux/quotaio_v2.h])
1832 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
1833                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
1834                 [kernel has fs/quotaio_v1.h])
1835 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
1836                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
1837                 [kernel has fs/quota/quotaio_v2.h])
1838 ],[
1839         AC_MSG_RESULT([no])
1840 ])
1841 ])
1842 ])
1843 ])
1844
1845 # sles10 sp2 need 5 parameter for vfs_symlink
1846 AC_DEFUN([LC_VFS_SYMLINK_5ARGS],
1847 [AC_MSG_CHECKING([vfs_symlink need 5 parameter])
1848 LB_LINUX_TRY_COMPILE([
1849         #include <linux/fs.h>
1850 ],[
1851         struct inode *dir = NULL;
1852         struct dentry *dentry = NULL;
1853         struct vfsmount *mnt = NULL;
1854         const char * path = NULL;
1855         vfs_symlink(dir, dentry, mnt, path, 0);
1856 ],[
1857         AC_DEFINE(HAVE_VFS_SYMLINK_5ARGS, 1,
1858                 [vfs_symlink need 5 parameteres])
1859         AC_MSG_RESULT([yes])
1860 ],[
1861         AC_MSG_RESULT([no])
1862 ])
1863 ])
1864
1865 # 2.6.27 sles11 has sb_any_quota_active
1866 AC_DEFUN([LC_SB_ANY_QUOTA_ACTIVE],
1867 [AC_MSG_CHECKING([Kernel has sb_any_quota_active])
1868 LB_LINUX_TRY_COMPILE([
1869         #include <linux/quotaops.h>
1870 ],[
1871         sb_any_quota_active(NULL);
1872 ],[
1873         AC_DEFINE(HAVE_SB_ANY_QUOTA_ACTIVE, 1,
1874                 [Kernel has a sb_any_quota_active])
1875         AC_MSG_RESULT([yes])
1876 ],[
1877         AC_MSG_RESULT([no])
1878 ])
1879 ])
1880
1881 # 2.6.27 sles11 has sb_has_quota_active
1882 AC_DEFUN([LC_SB_HAS_QUOTA_ACTIVE],
1883 [AC_MSG_CHECKING([Kernel has sb_has_quota_active])
1884 LB_LINUX_TRY_COMPILE([
1885         #include <linux/quotaops.h>
1886 ],[
1887         sb_has_quota_active(NULL, 0);
1888 ],[
1889         AC_DEFINE(HAVE_SB_HAS_QUOTA_ACTIVE, 1,
1890                 [Kernel has a sb_has_quota_active])
1891         AC_MSG_RESULT([yes])
1892 ],[
1893         AC_MSG_RESULT([no])
1894 ])
1895 ])
1896
1897 # 2.6.27 exported add_to_page_cache_lru.
1898 AC_DEFUN([LC_EXPORT_ADD_TO_PAGE_CACHE_LRU],
1899 [LB_CHECK_SYMBOL_EXPORT([add_to_page_cache_lru],
1900 [mm/filemap.c],[
1901         AC_DEFINE(HAVE_ADD_TO_PAGE_CACHE_LRU, 1,
1902                 [add_to_page_cache_lru functions are present])
1903 ],[
1904 ])
1905 ])
1906
1907 # 2.6.31
1908
1909 # 2.6.30 x86 node_to_cpumask has been removed. must use cpumask_of_node
1910 AC_DEFUN([LC_EXPORT_CPUMASK_OF_NODE],
1911          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask_map],
1912                                  [arch/$LINUX_ARCH/mm/numa.c],
1913                                  [AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1,
1914                                             [node_to_cpumask_map is exported by
1915                                              the kernel])]) # x86_64
1916          ])
1917
1918 # 2.6.31 replaces blk_queue_hardsect_size by blk_queue_logical_block_size function
1919 AC_DEFUN([LC_BLK_QUEUE_LOG_BLK_SIZE],
1920 [AC_MSG_CHECKING([if blk_queue_logical_block_size is defined])
1921 LB_LINUX_TRY_COMPILE([
1922         #include <linux/blkdev.h>
1923 ],[
1924         blk_queue_logical_block_size(NULL, 0);
1925 ],[
1926         AC_MSG_RESULT(yes)
1927         AC_DEFINE(HAVE_BLK_QUEUE_LOG_BLK_SIZE, 1,
1928                   [blk_queue_logical_block_size is defined])
1929 ],[
1930         AC_MSG_RESULT(no)
1931 ])
1932 ])
1933
1934 # 2.6.32
1935
1936 # 2.6.32 add a limits member in struct request_queue.
1937 AC_DEFUN([LC_REQUEST_QUEUE_LIMITS],
1938 [AC_MSG_CHECKING([if request_queue has a limits field])
1939 LB_LINUX_TRY_COMPILE([
1940         #include <linux/blkdev.h>
1941 ],[
1942         struct request_queue rq;
1943         rq.limits.io_min = 0;
1944 ],[
1945         AC_MSG_RESULT(yes)
1946         AC_DEFINE(HAVE_REQUEST_QUEUE_LIMITS, 1,
1947                   [request_queue has a limits field])
1948 ],[
1949         AC_MSG_RESULT(no)
1950 ])
1951 ])
1952
1953 # 2.6.32 has bdi_register() functions.
1954 AC_DEFUN([LC_EXPORT_BDI_REGISTER],
1955 [LB_CHECK_SYMBOL_EXPORT([bdi_register],
1956 [mm/backing-dev.c],[
1957         AC_DEFINE(HAVE_BDI_REGISTER, 1,
1958                 [bdi_register function is present])
1959 ],[
1960 ])
1961 ])
1962
1963 # 2.6.32 add s_bdi for super block
1964 AC_DEFUN([LC_SB_BDI],
1965 [AC_MSG_CHECKING([if super_block has s_bdi field])
1966 LB_LINUX_TRY_COMPILE([
1967         #include <linux/fs.h>
1968 ],[
1969         struct super_block sb;
1970         sb.s_bdi = NULL;
1971 ],[
1972         AC_MSG_RESULT(yes)
1973         AC_DEFINE(HAVE_SB_BDI, 1,
1974                   [super_block has s_bdi field])
1975 ],[
1976         AC_MSG_RESULT(no)
1977 ])
1978 ])
1979
1980 #  2.6.27.15-2 SuSE 11 sp0 kernels lack the name field for BDI
1981 AC_DEFUN([LC_BDI_NAME],
1982 [AC_MSG_CHECKING([if backing_device_info has name field])
1983 LB_LINUX_TRY_COMPILE([
1984         #include <linux/blkkdev.h>
1985 ],[
1986         struct backing_dev_info bdi;
1987         bdi.name = NULL;
1988 ],[
1989         AC_MSG_RESULT(yes)
1990         AC_DEFINE(HAVE_BDI_NAME, 1,
1991                   [backing_device_info has name field])
1992 ],[
1993         AC_MSG_RESULT(no)
1994 ])
1995 ])  
1996
1997 # 2.6.32 removes blk_queue_max_sectors and add blk_queue_max_hw_sectors
1998 # check blk_queue_max_sectors and use it until disappear.
1999 AC_DEFUN([LC_BLK_QUEUE_MAX_SECTORS],
2000 [AC_MSG_CHECKING([if blk_queue_max_sectors is defined])
2001 LB_LINUX_TRY_COMPILE([
2002         #include <linux/blkdev.h>
2003 ],[
2004         blk_queue_max_sectors(NULL, 0);
2005 ],[
2006         AC_MSG_RESULT(yes)
2007         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SECTORS, 1,
2008                   [blk_queue_max_sectors is defined])
2009 ],[
2010         AC_MSG_RESULT(no)
2011 ])
2012 ])
2013
2014 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
2015 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
2016 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
2017 LB_LINUX_TRY_COMPILE([
2018         #include <linux/blkdev.h>
2019 ],[
2020         blk_queue_max_segments(NULL, 0);
2021 ],[
2022         AC_MSG_RESULT(yes)
2023         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
2024                   [blk_queue_max_segments is defined])
2025 ],[
2026         AC_MSG_RESULT(no)
2027 ])
2028 ])
2029
2030 #
2031 # LC_QUOTA64
2032 #
2033 # Check if kernel has been patched for 64-bit quota limits support.
2034 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
2035 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
2036 # that in the absence of quotaio_v1.h in the kernel headers.
2037 #
2038 AC_DEFUN([LC_QUOTA64],[
2039         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
2040 tmp_flags="$EXTRA_KCFLAGS"
2041 EXTRA_KCFLAGS="-I$LINUX/fs"
2042         LB_LINUX_TRY_COMPILE([
2043                 #include <linux/kernel.h>
2044                 #include <linux/fs.h>
2045                 #ifdef HAVE_QUOTAIO_H
2046                 # include <linux/quotaio_v2.h>
2047                 int versions[] = V2_INITQVERSIONS_R1;
2048                 struct v2_disk_dqblk_r1 dqblk_r1;
2049                 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
2050                 # include <quota/quotaio_v2.h>
2051                 struct v2r1_disk_dqblk dqblk_r1;
2052                 #elif defined(HAVE_FS_QUOTAIO_H)
2053                 # include <quotaio_v2.h>
2054                 struct v2r1_disk_dqblk dqblk_r1;
2055                 #else
2056                 #include <linux/quota.h>
2057                 int ver = QFMT_VFS_V1;
2058                 #endif
2059         ],[],[
2060                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
2061                 AC_MSG_RESULT([yes])
2062         ],[
2063                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
2064                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
2065                 ],[])
2066                 AC_MSG_RESULT([no])
2067         ])
2068 EXTRA_KCFLAGS=$tmp_flags
2069 ])
2070
2071 # 2.6.32 set_cpus_allowed is no more defined if CONFIG_CPUMASK_OFFSTACK=yes
2072 AC_DEFUN([LC_SET_CPUS_ALLOWED],
2073          [AC_MSG_CHECKING([if kernel defines set_cpus_allowed])
2074           LB_LINUX_TRY_COMPILE(
2075                 [#include <linux/sched.h>],
2076                 [struct task_struct *p = NULL;
2077                  cpumask_t mask = { { 0 } };
2078                  (void) set_cpus_allowed(p, mask);],
2079                 [AC_MSG_RESULT([yes])
2080                  AC_DEFINE(HAVE_SET_CPUS_ALLOWED, 1,
2081                            [set_cpus_allowed is exported by the kernel])],
2082                 [AC_MSG_RESULT([no])] )])
2083
2084 #
2085 # LC_D_OBTAIN_ALIAS
2086 # starting from 2.6.28 kernel replaces d_alloc_anon() with
2087 # d_obtain_alias() for getting anonymous dentries
2088 #
2089 AC_DEFUN([LC_D_OBTAIN_ALIAS],
2090 [AC_MSG_CHECKING([d_obtain_alias exist in kernel])
2091 LB_LINUX_TRY_COMPILE([
2092         #include <linux/dcache.h>
2093 ],[
2094         d_obtain_alias(NULL);
2095 ],[
2096         AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
2097                 [d_obtain_alias exist in kernel])
2098         AC_MSG_RESULT([yes])
2099 ],[
2100         AC_MSG_RESULT([no])
2101 ])
2102 ])
2103
2104 #
2105 # 2.6.38 export blkdev_get_by_dev
2106 #
2107 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
2108 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
2109 [fs/block_dev.c],[
2110 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
2111             [blkdev_get_by_dev is exported by the kernel])
2112 ],[
2113 ])
2114 ])
2115
2116 #
2117 # 2.6.39 remove unplug_fn from request_queue.
2118 #
2119 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
2120 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
2121 LB_LINUX_TRY_COMPILE([
2122         #include <linux/blkdev.h>
2123 ],[
2124         struct request_queue rq;
2125         memset(rq.unplug_fn, 0, sizeof(rq.unplug_fn));
2126 ],[
2127         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
2128                   [request_queue has unplug_fn field]),
2129         AC_MSG_RESULT([yes])
2130 ],[
2131         AC_MSG_RESULT([no])
2132 ])
2133 ])
2134
2135 #
2136 # LC_PROG_LINUX
2137 #
2138 # Lustre linux kernel checks
2139 #
2140 AC_DEFUN([LC_PROG_LINUX],
2141          [LC_LUSTRE_VERSION_H
2142          LC_CONFIG_PINGER
2143          LC_CONFIG_CHECKSUM
2144          LC_CONFIG_LIBLUSTRE_RECOVERY
2145          LC_CONFIG_HEALTH_CHECK_WRITE
2146          LC_CONFIG_LRU_RESIZE
2147          LC_QUOTA_MODULE
2148          LC_LLITE_LLOOP_MODULE
2149
2150          # RHEL4 patches
2151          LC_EXPORT_TRUNCATE_COMPLETE
2152          LC_EXPORT_TRUNCATE_RANGE
2153          LC_EXPORT_D_REHASH_COND
2154          LC_EXPORT___D_REHASH
2155          LC_EXPORT_NODE_TO_CPUMASK
2156
2157          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
2158          LC_STRUCT_STATFS
2159          LC_FILEMAP_POPULATE
2160          LC_D_ADD_UNIQUE
2161          LC_BIT_SPINLOCK_H
2162
2163          LC_XATTR_ACL
2164          LC_POSIX_ACL_XATTR_H
2165          LC_CONST_ACL_SIZE
2166
2167          LC_STRUCT_INTENT_FILE
2168
2169          LC_CAPA_CRYPTO
2170          LC_CONFIG_RMTCLIENT
2171          LC_CONFIG_GSS
2172          LC_FUNC_HAVE_CAN_SLEEP_ARG
2173          LC_FUNC_F_OP_FLOCK
2174          LC_QUOTA_READ
2175          LC_COOKIE_FOLLOW_LINK
2176          LC_FUNC_RCU
2177          LC_PERCPU_COUNTER
2178          LC_TASK_CLENV_STORE
2179
2180          # ~2.6.11
2181          LC_S_TIME_GRAN
2182          LC_SB_TIME_GRAN
2183
2184          # 2.6.12
2185          LC_RW_TREE_LOCK
2186          LC_EXPORT_SYNCHRONIZE_RCU
2187
2188          # 2.6.15
2189          LC_INODE_I_MUTEX
2190
2191          # 2.6.16
2192          LC_SECURITY_PLUG  # for SLES10 SP2
2193
2194          # 2.6.17
2195          LC_INODE_IPRIVATE
2196          LC_DQUOTOFF_MUTEX
2197
2198          # 2.6.18
2199          LC_NR_PAGECACHE
2200          LC_STATFS_DENTRY_PARAM
2201          LC_VFS_KERN_MOUNT
2202          LC_INVALIDATEPAGE_RETURN_INT
2203          LC_UMOUNTBEGIN_HAS_VFSMOUNT
2204          LC_SEQ_LOCK
2205          LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
2206          LC_FLUSH_OWNER_ID
2207          if test x$enable_server = xyes ; then
2208                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
2209          fi
2210
2211          #2.6.18 + RHEL5 (fc6)
2212          LC_PG_FS_MISC
2213          LC_PAGE_CHECKED
2214          LC_LINUX_FIEMAP_H
2215
2216          # 2.6.19
2217          LC_INODE_BLKSIZE
2218          LC_VFS_READDIR_U64_INO
2219          LC_FILE_WRITEV
2220          LC_FILE_READV
2221
2222          # 2.6.20
2223          LC_CANCEL_DIRTY_PAGE
2224
2225          # raid5-zerocopy patch
2226          LC_PAGE_CONSTANT
2227
2228          # 2.6.22
2229          LC_INVALIDATE_BDEV_2ARG
2230          LC_ASYNC_BLOCK_CIPHER
2231          LC_STRUCT_HASH_DESC
2232          LC_STRUCT_BLKCIPHER_DESC
2233          LC_FS_RENAME_DOES_D_MOVE
2234
2235          # 2.6.23
2236          LC_UNREGISTER_BLKDEV_RETURN_INT
2237          LC_KERNEL_SPLICE_READ
2238          LC_KERNEL_SENDFILE
2239          LC_HAVE_EXPORTFS_H
2240          LC_VM_OP_FAULT
2241          LC_PROCFS_USERS
2242          LC_EXPORTFS_DECODE_FH
2243   
2244          # 2.6.24
2245          LC_HAVE_MMTYPES_H
2246          LC_BIO_ENDIO_2ARG
2247          LC_FH_TO_DENTRY
2248          LC_PROCFS_DELETED
2249          LC_EXPORT_BDI_INIT
2250
2251          #2.6.25
2252          LC_MAPPING_CAP_WRITEBACK_DIRTY
2253   
2254          # 2.6.26
2255          LC_FS_STRUCT_USE_PATH
2256
2257          # 2.6.27
2258          LC_INODE_PERMISION_2ARGS
2259          LC_FILE_REMOVE_SUID
2260          LC_TRYLOCKPAGE
2261          LC_READ_INODE_IN_SBOPS
2262          LC_EXPORT_INODE_PERMISSION
2263          LC_QUOTA_ON_5ARGS
2264          LC_QUOTA_OFF_3ARGS
2265          LC_VFS_DQ_OFF
2266          LC_LOCK_MAP_ACQUIRE
2267
2268          # 2.6.27.15-2 sles11
2269          LC_BI_HW_SEGMENTS
2270          LC_HAVE_QUOTAIO_H
2271          LC_VFS_SYMLINK_5ARGS
2272          LC_BDI_NAME
2273          LC_SB_ANY_QUOTA_ACTIVE
2274          LC_SB_HAS_QUOTA_ACTIVE
2275          LC_EXPORT_ADD_TO_PAGE_CACHE_LRU
2276
2277          # 2.6.30
2278          LC_EXPORT_CPUMASK_OF_NODE
2279
2280          # 2.6.31
2281          LC_BLK_QUEUE_LOG_BLK_SIZE
2282
2283          # 2.6.32
2284          LC_REQUEST_QUEUE_LIMITS
2285          LC_EXPORT_BDI_REGISTER
2286          LC_SB_BDI
2287          LC_BLK_QUEUE_MAX_SECTORS
2288          LC_BLK_QUEUE_MAX_SEGMENTS
2289          LC_SET_CPUS_ALLOWED
2290
2291          # 2.6.38
2292          LC_BLKDEV_GET_BY_DEV
2293
2294          # 2.6.39
2295          LC_REQUEST_QUEUE_UNPLUG_FN
2296
2297          #
2298          if test x$enable_server = xyes ; then
2299              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
2300              LC_FUNC_DEV_SET_RDONLY
2301              LC_STACK_SIZE
2302              LC_QUOTA64
2303          fi
2304 ])
2305
2306 #
2307 # LC_CONFIG_CLIENT_SERVER
2308 #
2309 # Build client/server sides of Lustre
2310 #
2311 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
2312 [AC_MSG_CHECKING([whether to build Lustre server support])
2313 AC_ARG_ENABLE([server],
2314         AC_HELP_STRING([--disable-server],
2315                         [disable Lustre server support]),
2316         [],[enable_server='yes'])
2317 AC_MSG_RESULT([$enable_server])
2318
2319 AC_MSG_CHECKING([whether to build Lustre client support])
2320 AC_ARG_ENABLE([client],
2321         AC_HELP_STRING([--disable-client],
2322                         [disable Lustre client support]),
2323         [],[enable_client='yes'])
2324 AC_MSG_RESULT([$enable_client])])
2325
2326 #
2327 # LC_CONFIG_LIBLUSTRE
2328 #
2329 # whether to build liblustre
2330 #
2331 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
2332 [AC_MSG_CHECKING([whether to build Lustre library])
2333 AC_ARG_ENABLE([liblustre],
2334         AC_HELP_STRING([--disable-liblustre],
2335                         [disable building of Lustre library]),
2336         [],[enable_liblustre=$with_sysio])
2337 AC_MSG_RESULT([$enable_liblustre])
2338 # only build sysio if liblustre is built
2339 with_sysio="$enable_liblustre"
2340
2341 AC_MSG_CHECKING([whether to build liblustre tests])
2342 AC_ARG_ENABLE([liblustre-tests],
2343         AC_HELP_STRING([--enable-liblustre-tests],
2344                         [enable liblustre tests, if --disable-tests is used]),
2345         [],[enable_liblustre_tests=$enable_tests])
2346 if test x$enable_liblustre != xyes ; then
2347    enable_liblustre_tests='no'
2348 fi
2349 AC_MSG_RESULT([$enable_liblustre_tests])
2350
2351 AC_MSG_CHECKING([whether to enable liblustre acl])
2352 AC_ARG_ENABLE([liblustre-acl],
2353         AC_HELP_STRING([--disable-liblustre-acl],
2354                         [disable ACL support for liblustre]),
2355         [],[enable_liblustre_acl=yes])
2356 AC_MSG_RESULT([$enable_liblustre_acl])
2357 if test x$enable_liblustre_acl = xyes ; then
2358   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
2359 fi
2360
2361 # 2.6.29 change prepare/commit_write to write_begin/end
2362 AC_DEFUN([LC_WRITE_BEGIN_END],
2363 [AC_MSG_CHECKING([if kernel has .write_begin/end])
2364 LB_LINUX_TRY_COMPILE([
2365         #include <linux/fs.h>
2366         #include <linux/pagemap.h>
2367 #ifdef HAVE_LINUX_MMTYPES_H
2368         #include <linux/mm_types.h>
2369 #endif
2370 ],[
2371         struct address_space_operations aops;
2372         struct page *page;
2373
2374         aops.write_begin = NULL;
2375         aops.write_end = NULL;
2376         page = grab_cache_page_write_begin(NULL, 0, 0);
2377 ], [
2378         AC_MSG_RESULT([yes])
2379         AC_DEFINE(HAVE_KERNEL_WRITE_BEGIN_END, 1,
2380                 [kernel has .write_begin/end])
2381 ],[
2382         AC_MSG_RESULT([no])
2383 ])
2384 ])
2385
2386 # 2.6.29 blkdev_put has 2 arguments
2387 AC_DEFUN([LC_BLKDEV_PUT_2ARGS],
2388 [AC_MSG_CHECKING([blkdev_put needs 2 parameters])
2389 LB_LINUX_TRY_COMPILE([
2390         #include <linux/fs.h>
2391 ],[
2392         blkdev_put(NULL, 0);
2393 ],[
2394         AC_DEFINE(HAVE_BLKDEV_PUT_2ARGS, 1,
2395                 [blkdev_put needs 2 paramters])
2396         AC_MSG_RESULT([yes])
2397 ],[
2398         AC_MSG_RESULT([no])
2399 ])
2400 ])
2401
2402 # 2.6.29 dentry_open has 4 arguments
2403 AC_DEFUN([LC_DENTRY_OPEN_4ARGS],
2404 [AC_MSG_CHECKING([dentry_open needs 4 parameters])
2405 LB_LINUX_TRY_COMPILE([
2406         #include <linux/fs.h>
2407 ],[
2408         dentry_open(NULL, NULL, 0, NULL);
2409 ],[
2410         AC_DEFINE(HAVE_DENTRY_OPEN_4ARGS, 1,
2411                 [dentry_open needs 4 paramters])
2412         AC_MSG_RESULT([yes])
2413 ],[
2414         AC_MSG_RESULT([no])
2415 ])
2416 ])
2417
2418 # 2.6.29 split file and anonymous page queues
2419 AC_DEFUN([LC_PAGEVEC_LRU_ADD_FILE],
2420 [AC_MSG_CHECKING([if kernel has .pagevec_lru_add_file])
2421 LB_LINUX_TRY_COMPILE([
2422         #include <linux/mm.h>
2423         #include <linux/pagevec.h>
2424 ],[
2425         struct pagevec lru_pagevec;
2426
2427         pagevec_init(&lru_pagevec, 0);
2428         pagevec_lru_add_file(&lru_pagevec);
2429 ],[
2430         AC_MSG_RESULT([yes])
2431         AC_DEFINE(HAVE_PAGEVEC_LRU_ADD_FILE, 1,
2432                 [kernel has .pagevec_lru_add_file])
2433 ],[
2434         AC_MSG_RESULT([no])
2435 ])
2436 ])
2437
2438 #
2439 # --enable-mpitest
2440 #
2441 AC_ARG_ENABLE(mpitests,
2442         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
2443                            [include mpi tests]),
2444         [
2445          enable_mpitests=yes
2446          case $enableval in
2447          yes)
2448                 MPICC_WRAPPER=mpicc
2449                 ;;
2450          no)
2451                 enable_mpitests=no
2452                 ;;
2453          *)
2454                 MPICC_WRAPPER=$enableval
2455                  ;;
2456          esac
2457         ],
2458         [
2459         MPICC_WRAPPER=mpicc
2460         enable_mpitests=yes
2461         ]
2462 )
2463
2464 if test x$enable_mpitests != xno; then
2465         AC_MSG_CHECKING([whether mpitests can be built])
2466         oldcc=$CC
2467         CC=$MPICC_WRAPPER
2468         AC_LINK_IFELSE(
2469             [AC_LANG_PROGRAM([[
2470                     #include <mpi.h>
2471                 ]],[[
2472                     int flag;
2473                     MPI_Initialized(&flag);
2474                 ]])],
2475             [
2476                     AC_MSG_RESULT([yes])
2477             ],[
2478                     AC_MSG_RESULT([no])
2479                     enable_mpitests=no
2480         ])
2481         CC=$oldcc
2482 fi
2483 AC_SUBST(MPICC_WRAPPER)
2484
2485 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
2486 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
2487
2488 LC_CONFIG_PINGER
2489 LC_CONFIG_LIBLUSTRE_RECOVERY
2490 ])
2491
2492 #
2493 # LC_CONFIG_QUOTA
2494 #
2495 # whether to enable quota support global control
2496 #
2497 AC_DEFUN([LC_CONFIG_QUOTA],
2498 [AC_ARG_ENABLE([quota],
2499         AC_HELP_STRING([--enable-quota],
2500                         [enable quota support]),
2501         [],[enable_quota='yes'])
2502 ])
2503
2504 AC_DEFUN([LC_QUOTA],
2505 [#check global
2506 LC_CONFIG_QUOTA
2507 #check for utils
2508 AC_CHECK_HEADER(sys/quota.h,
2509                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
2510                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2511 ])
2512
2513 #
2514 # LC_CONFIG_SPLIT
2515 #
2516 # whether to enable split support
2517 #
2518 AC_DEFUN([LC_CONFIG_SPLIT],
2519 [AC_MSG_CHECKING([whether to enable split support])
2520 AC_ARG_ENABLE([split],
2521         AC_HELP_STRING([--enable-split],
2522                         [enable split support]),
2523         [],[enable_split='no'])
2524 AC_MSG_RESULT([$enable_split])
2525 if test x$enable_split != xno; then
2526    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
2527 fi
2528 ])
2529
2530 AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
2531 [AC_MSG_CHECKING([tux_info])
2532 LB_LINUX_TRY_COMPILE([
2533         #include <linux/sched.h>
2534 ],[
2535         struct task_struct task;
2536         &task.tux_info;
2537 ],[
2538         AC_MSG_RESULT([yes])
2539         AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
2540         have_task_clenv_store='yes'
2541 ],[
2542         AC_MSG_RESULT([no])
2543 ])
2544 ])
2545
2546 #
2547 # LC_LLITE_LLOOP_MODULE
2548 # lloop_llite.ko does not currently work with page sizes
2549 # of 64k or larger.
2550 #
2551 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
2552 [AC_MSG_CHECKING([whether to enable llite_lloop module])
2553 LB_LINUX_TRY_COMPILE([
2554         #include <asm/page.h>
2555 ],[
2556         #if PAGE_SIZE >= 65536
2557         #error "PAGE_SIZE >= 65536"
2558         #endif
2559 ],[
2560         enable_llite_lloop_module='yes'
2561         AC_MSG_RESULT([yes])
2562 ],[
2563         enable_llite_lloop_module='no'
2564         AC_MSG_RESULT([no])
2565 ])
2566 ])
2567
2568 #
2569 # LC_CONFIGURE
2570 #
2571 # other configure checks
2572 #
2573 AC_DEFUN([LC_CONFIGURE],
2574 [LC_CONFIG_OBD_BUFFER_SIZE
2575
2576 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
2577         CFLAGS="$CFLAGS -Werror"
2578 fi
2579
2580 # maximum MDS thread count
2581 LC_MDS_MAX_THREADS
2582
2583 # include/liblustre.h
2584 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
2585
2586 # liblustre/llite_lib.h
2587 AC_CHECK_HEADERS([xtio.h file.h])
2588
2589 # liblustre/dir.c
2590 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2591
2592 # liblustre/lutil.c
2593 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2594 AC_CHECK_FUNCS([inet_ntoa])
2595
2596 # libsysio/src/readlink.c
2597 LC_READLINK_SSIZE_T
2598
2599 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2600 AC_CHECK_HEADERS([linux/random.h], [], [],
2601                  [#ifdef HAVE_LINUX_TYPES_H
2602                   # include <linux/types.h>
2603                   #endif
2604                  ])
2605
2606 # utils/llverfs.c
2607 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2608
2609 # check for -lz support
2610 ZLIB=""
2611 AC_CHECK_LIB([z],
2612              [adler32],
2613              [AC_CHECK_HEADERS([zlib.h],
2614                                [ZLIB="-lz"
2615                                 AC_DEFINE([HAVE_ADLER], 1,
2616                                           [support alder32 checksum type])],
2617                                [AC_MSG_WARN([No zlib-devel package found,
2618                                              unable to use adler32 checksum])])],
2619              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2620 )
2621 AC_SUBST(ZLIB)
2622
2623 # Super safe df
2624 AC_ARG_ENABLE([mindf],
2625       AC_HELP_STRING([--enable-mindf],
2626                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2627       [],[])
2628 if test "$enable_mindf" = "yes" ;  then
2629       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2630 fi
2631
2632 AC_ARG_ENABLE([fail_alloc],
2633         AC_HELP_STRING([--disable-fail-alloc],
2634                 [disable randomly alloc failure]),
2635         [],[enable_fail_alloc=yes])
2636 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2637 AC_MSG_RESULT([$enable_fail_alloc])
2638 if test x$enable_fail_alloc != xno ; then
2639         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2640 fi
2641
2642 AC_ARG_ENABLE([invariants],
2643         AC_HELP_STRING([--enable-invariants],
2644                 [enable invariant checking (cpu intensive)]),
2645         [],[])
2646 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2647 AC_MSG_RESULT([$enable_invariants])
2648 if test x$enable_invariants = xyes ; then
2649         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2650 fi
2651
2652 AC_ARG_ENABLE([lu_ref],
2653         AC_HELP_STRING([--enable-lu_ref],
2654                 [enable lu_ref reference tracking code]),
2655         [],[])
2656 AC_MSG_CHECKING([whether to track references with lu_ref])
2657 AC_MSG_RESULT([$enable_lu_ref])
2658 if test x$enable_lu_ref = xyes ; then
2659         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2660 fi
2661
2662 AC_ARG_ENABLE([pgstate-track],
2663               AC_HELP_STRING([--enable-pgstate-track],
2664                              [enable page state tracking]),
2665               [enable_pgstat_track='yes'],[])
2666 AC_MSG_CHECKING([whether to enable page state tracking])
2667 AC_MSG_RESULT([$enable_pgstat_track])
2668 if test x$enable_pgstat_track = xyes ; then
2669         AC_DEFINE([LUSTRE_PAGESTATE_TRACKING], 1,
2670                   [enable page state tracking code])
2671 fi
2672
2673          #2.6.29
2674          LC_WRITE_BEGIN_END
2675          LC_D_OBTAIN_ALIAS
2676          LC_BLKDEV_PUT_2ARGS
2677          LC_DENTRY_OPEN_4ARGS
2678          LC_PAGEVEC_LRU_ADD_FILE
2679
2680 ])
2681
2682 #
2683 # LC_CONDITIONALS
2684 #
2685 # AM_CONDITIONALS for lustre
2686 #
2687 AC_DEFUN([LC_CONDITIONALS],
2688 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2689 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2690 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2691 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2692 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2693 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2694 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2695 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2696 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2697 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2698 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2699 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2700 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2701 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2702 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2703 ])
2704
2705 #
2706 # LC_CONFIG_FILES
2707 #
2708 # files that should be generated with AC_OUTPUT
2709 #
2710 AC_DEFUN([LC_CONFIG_FILES],
2711 [AC_CONFIG_FILES([
2712 lustre/Makefile
2713 lustre/autoMakefile
2714 lustre/autoconf/Makefile
2715 lustre/conf/Makefile
2716 lustre/contrib/Makefile
2717 lustre/doc/Makefile
2718 lustre/include/Makefile
2719 lustre/include/lustre_ver.h
2720 lustre/include/linux/Makefile
2721 lustre/include/lustre/Makefile
2722 lustre/kernel_patches/targets/2.6-rhel6.target
2723 lustre/kernel_patches/targets/2.6-rhel5.target
2724 lustre/kernel_patches/targets/2.6-sles10.target
2725 lustre/kernel_patches/targets/2.6-sles11.target
2726 lustre/kernel_patches/targets/2.6-oel5.target
2727 lustre/kernel_patches/targets/2.6-fc11.target
2728 lustre/kernel_patches/targets/2.6-fc12.target
2729 lustre/ldlm/Makefile
2730 lustre/fid/Makefile
2731 lustre/fid/autoMakefile
2732 lustre/liblustre/Makefile
2733 lustre/liblustre/tests/Makefile
2734 lustre/liblustre/tests/mpi/Makefile
2735 lustre/llite/Makefile
2736 lustre/llite/autoMakefile
2737 lustre/lclient/Makefile
2738 lustre/lov/Makefile
2739 lustre/lov/autoMakefile
2740 lustre/lvfs/Makefile
2741 lustre/lvfs/autoMakefile
2742 lustre/mdc/Makefile
2743 lustre/mdc/autoMakefile
2744 lustre/lmv/Makefile
2745 lustre/lmv/autoMakefile
2746 lustre/mds/Makefile
2747 lustre/mds/autoMakefile
2748 lustre/mdt/Makefile
2749 lustre/mdt/autoMakefile
2750 lustre/cmm/Makefile
2751 lustre/cmm/autoMakefile
2752 lustre/mdd/Makefile
2753 lustre/mdd/autoMakefile
2754 lustre/fld/Makefile
2755 lustre/fld/autoMakefile
2756 lustre/obdclass/Makefile
2757 lustre/obdclass/autoMakefile
2758 lustre/obdclass/linux/Makefile
2759 lustre/obdecho/Makefile
2760 lustre/obdecho/autoMakefile
2761 lustre/obdfilter/Makefile
2762 lustre/obdfilter/autoMakefile
2763 lustre/osc/Makefile
2764 lustre/osc/autoMakefile
2765 lustre/ost/Makefile
2766 lustre/ost/autoMakefile
2767 lustre/osd-ldiskfs/Makefile
2768 lustre/osd-ldiskfs/autoMakefile
2769 lustre/mgc/Makefile
2770 lustre/mgc/autoMakefile
2771 lustre/mgs/Makefile
2772 lustre/mgs/autoMakefile
2773 lustre/ptlrpc/Makefile
2774 lustre/ptlrpc/autoMakefile
2775 lustre/ptlrpc/gss/Makefile
2776 lustre/ptlrpc/gss/autoMakefile
2777 lustre/quota/Makefile
2778 lustre/quota/autoMakefile
2779 lustre/scripts/Makefile
2780 lustre/tests/Makefile
2781 lustre/tests/mpi/Makefile
2782 lustre/utils/Makefile
2783 lustre/utils/gss/Makefile
2784 lustre/obdclass/darwin/Makefile
2785 ])
2786 ])