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[fs/lustre-release.git] / lustre / autoconf / lustre-core.m4
1 #
2 # LC_CONFIG_SRCDIR
3 #
4 # Wrapper for AC_CONFIG_SUBDIR
5 #
6 AC_DEFUN([LC_CONFIG_SRCDIR],
7 [AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
8 libcfs_is_module=yes
9 ldiskfs_is_ext4=yes
10 ])
11
12 #
13 # LC_PATH_DEFAULTS
14 #
15 # lustre specific paths
16 #
17 AC_DEFUN([LC_PATH_DEFAULTS],
18 [# ptlrpc kernel build requires this
19 LUSTRE="$PWD/lustre"
20 AC_SUBST(LUSTRE)
21
22 # mount.lustre
23 rootsbindir='$(CROSS_PATH)/sbin'
24 AC_SUBST(rootsbindir)
25
26 demodir='$(docdir)/demo'
27 AC_SUBST(demodir)
28
29 pkgexampledir='${pkgdatadir}/examples'
30 AC_SUBST(pkgexampledir)
31 ])
32
33 #
34 # LC_TARGET_SUPPORTED
35 #
36 # is the target os supported?
37 #
38 AC_DEFUN([LC_TARGET_SUPPORTED],
39 [case $target_os in
40         linux* | darwin*)
41 $1
42                 ;;
43         *)
44 $2
45                 ;;
46 esac
47 ])
48
49 #
50 # LC_CONFIG_OBD_BUFFER_SIZE
51 #
52 # the maximum buffer size of lctl ioctls
53 #
54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
55 [AC_MSG_CHECKING([maximum OBD ioctl size])
56 AC_ARG_WITH([obd-buffer-size],
57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
58                         [set lctl ioctl maximum bytes (default=8192)]),
59         [
60                 OBD_BUFFER_SIZE=$with_obd_buffer_size
61         ],[
62                 OBD_BUFFER_SIZE=8192
63         ])
64 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
65 AC_DEFINE_UNQUOTED(CONFIG_LUSTRE_OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
66 ])
67
68 #
69 # LC_READLINK_SSIZE_T
70 #
71 AC_DEFUN([LC_READLINK_SSIZE_T],
72 [AC_MSG_CHECKING([if readlink returns ssize_t])
73 AC_TRY_COMPILE([
74         #include <unistd.h>
75 ],[
76         ssize_t readlink(const char *, char *, size_t);
77 ],[
78         AC_MSG_RESULT([yes])
79         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
80 ],[
81         AC_MSG_RESULT([no])
82 ])
83 ])
84
85 #
86 # LC_FUNC_DEV_SET_RDONLY
87 #
88 # check whether dev_set_rdonly is exported.  This is needed until we
89 # have another mechanism to fence IO from the underlying device.
90 #
91 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
92 [LB_CHECK_SYMBOL_EXPORT([dev_set_rdonly],
93 [block/ll_rw_block.c,block/blk-core.c],[
94         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel exports dev_set_rdonly])
95 ],[
96         AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])
97 ])
98 ])
99
100 #
101 # Ensure stack size big than 8k in Lustre server (all kernels)
102 #
103 AC_DEFUN([LC_STACK_SIZE],
104 [AC_MSG_CHECKING([stack size big than 8k])
105 LB_LINUX_TRY_COMPILE([
106         #include <linux/thread_info.h>
107 ],[
108         #if THREAD_SIZE < 8192
109         #error "stack size < 8192"
110         #endif
111 ],[
112         AC_MSG_RESULT(yes)
113 ],[
114         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
115 ])
116 ])
117
118 #
119 # Allow the user to set the MDS thread upper limit
120 #
121 AC_DEFUN([LC_MDS_MAX_THREADS],
122 [
123         AC_ARG_WITH([mds_max_threads],
124         AC_HELP_STRING([--with-mds-max-threads=count],
125                        [maximum threads available on the MDS: (default=512)]),
126         [
127                 MDS_THREAD_COUNT=$with_mds_max_threads
128                 AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of MDS threads])
129         ])
130 ])
131
132 #
133 # LC_CONFIG_PINGER
134 #
135 # the pinger is temporary, until we have the recovery node in place
136 #
137 AC_DEFUN([LC_CONFIG_PINGER],
138 [AC_MSG_CHECKING([whether to enable pinger support])
139 AC_ARG_ENABLE([pinger],
140         AC_HELP_STRING([--disable-pinger],
141                         [disable recovery pinger support]),
142         [],[enable_pinger='yes'])
143 AC_MSG_RESULT([$enable_pinger])
144 if test x$enable_pinger != xno ; then
145   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
146 fi
147 ])
148
149 #
150 # LC_CONFIG_CHECKSUM
151 #
152 # do checksum of bulk data between client and OST
153 #
154 AC_DEFUN([LC_CONFIG_CHECKSUM],
155 [AC_MSG_CHECKING([whether to enable data checksum support])
156 AC_ARG_ENABLE([checksum],
157        AC_HELP_STRING([--disable-checksum],
158                        [disable data checksum support]),
159        [],[enable_checksum='yes'])
160 AC_MSG_RESULT([$enable_checksum])
161 if test x$enable_checksum != xno ; then
162   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
163 fi
164 ])
165
166 #
167 # LC_CONFIG_LIBLUSTRE_RECOVERY
168 #
169 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
170 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
171 AC_ARG_ENABLE([liblustre-recovery],
172         AC_HELP_STRING([--disable-liblustre-recovery],
173                         [disable liblustre recovery support]),
174         [],[enable_liblustre_recovery='yes'])
175 AC_MSG_RESULT([$enable_liblustre_recovery])
176 if test x$enable_liblustre_recovery != xno ; then
177   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
178 fi
179 ])
180
181 #
182 # LC_CONFIG_HEALTH_CHECK_WRITE
183 #
184 # Turn off the actual write to the disk
185 #
186 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
187 [AC_MSG_CHECKING([whether to enable a write with the health check])
188 AC_ARG_ENABLE([health_write],
189         AC_HELP_STRING([--enable-health_write],
190                         [enable disk writes when doing health check]),
191         [],[enable_health_write='no'])
192 AC_MSG_RESULT([$enable_health_write])
193 if test x$enable_health_write != xno ; then
194   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
195 fi
196 ])
197
198 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
199 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
200 AC_ARG_ENABLE([lru_resize],
201         AC_HELP_STRING([--enable-lru-resize],
202                         [enable lru resize support]),
203         [],[enable_lru_resize='yes'])
204 AC_MSG_RESULT([$enable_lru_resize])
205 if test x$enable_lru_resize != xno; then
206    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
207 fi
208 ])
209
210 #
211 # Quota support. The kernel must support CONFIG_QUOTA.
212 #
213 AC_DEFUN([LC_QUOTA_CONFIG],
214 [LB_LINUX_CONFIG_IM([QUOTA],[],[
215         AC_MSG_ERROR([Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.])
216         ])
217 ])
218
219 # truncate_complete_page() has never been exported from an upstream kernel
220 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
221 # delete_from_page_cache() is exported from 2.6.39
222 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE],
223          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
224                                  [mm/truncate.c],
225                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
226                                             [kernel export truncate_complete_page])])
227           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
228                                  [mm/filemap.c],
229                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
230                                             [kernel export remove_from_page_cache])])
231           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
232                                  [mm/filemap.c],
233                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
234                                             [kernel export delete_from_page_cache])])
235          ])
236
237 #
238 # LC_CAPA_CRYPTO
239 #
240 AC_DEFUN([LC_CAPA_CRYPTO],
241 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
242         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
243 ])
244 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
245         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
246 ])
247 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
248         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
249 ])
250 ])
251
252 #
253 # LC_CONFIG_RMTCLIENT
254 #
255 dnl FIXME
256 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
257 dnl FIXME
258 AC_DEFUN([LC_CONFIG_RMTCLIENT],
259 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
260         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
261 ])
262 ])
263
264 #
265 # LC_CONFIG_GSS_KEYRING (default 'auto', tests for dependencies, if found, enables; only called if gss is enabled)
266 #
267 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
268 [AC_MSG_CHECKING([whether to enable gss keyring backend])
269  AC_ARG_ENABLE([gss_keyring],
270                [AC_HELP_STRING([--disable-gss-keyring],
271                                [disable gss keyring backend])],
272                [],[enable_gss_keyring='auto'])
273  AC_MSG_RESULT([$enable_gss_keyring])
274
275  if test x$enable_gss_keyring != xno; then
276         LB_LINUX_CONFIG_IM([KEYS],[],
277                            [gss_keyring_conf_test='fail';
278                             AC_MSG_WARN([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
279
280         AC_CHECK_LIB([keyutils], [keyctl_search], [],
281                      [gss_keyring_conf_test='fail';
282                       AC_MSG_WARN([libkeyutils is not found, which is required by gss keyring backend])],)
283
284         if test x$gss_keyring_conf_test != xfail; then
285                 AC_DEFINE([HAVE_GSS_KEYRING], [1], [Define this if you enable gss keyring backend])
286                 enable_gss_keyring='yes'
287         else
288                 if test x$enable_gss_keyring == xyes; then
289                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
290                 else
291                         AC_MSG_WARN([Cannot enable gss keyring.  See above for details.])
292                 fi
293         fi
294  fi
295 ])
296
297 AC_DEFUN([LC_CONFIG_SUNRPC],
298 [LB_LINUX_CONFIG_IM([SUNRPC],[],
299                     [if test x$sunrpc_required == xyes; then
300                          AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])
301                      fi])
302 ])
303
304 #
305 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
306 #
307 # Build gss and related tools of Lustre. Currently both kernel and user space
308 # parts are depend on linux platform.
309 #
310 AC_DEFUN([LC_CONFIG_GSS],
311 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
312  AC_ARG_ENABLE([gss],
313                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
314                [],[enable_gss='auto'])
315  AC_MSG_RESULT([$enable_gss])
316
317  if test x$enable_gss != xno; then
318         LC_CONFIG_GSS_KEYRING
319         sunrpc_required=$enable_gss
320         LC_CONFIG_SUNRPC
321         sunrpc_required=no
322
323         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
324                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
325         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
326                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
327         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
328                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
329         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
330                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
331
332         require_krb5=$enable_gss
333         AC_KERBEROS_V5
334         require_krb5=no
335
336         if test x$KRBDIR != x; then
337                 AC_CHECK_LIB([gssapi], [gss_export_lucid_sec_context],
338                              [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi";
339                               gss_conf_test='success'],
340                              [AC_CHECK_LIB([gssglue], [gss_export_lucid_sec_context],
341                                            [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue";
342                                             gss_conf_test='success'],
343                                            [if test x$enable_gss == xyes; then
344                                                 AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])
345                                             else
346                                                 AC_MSG_WARN([libgssapi or libgssglue is not found, which is required by GSS.])
347                                             fi])],)
348                 AC_SUBST(GSSAPI_LIBS)
349         fi
350
351         if test x$gss_conf_test == xsuccess; then
352                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
353                 enable_gss='yes'
354         fi
355
356  fi
357 ])
358
359 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
360 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
361 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
362 # v3.1 onward have a 2 arg version (inode, mask)
363 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
364 [AC_MSG_CHECKING([inode_operations->permission has two args])
365 LB_LINUX_TRY_COMPILE([
366         #include <linux/fs.h>
367 ],[
368         struct inode *inode __attribute__ ((unused));
369
370         inode = NULL;
371         inode->i_op->permission(NULL, 0);
372 ],[
373         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
374                   [inode_operations->permission has two args])
375         AC_MSG_RESULT([yes])
376 ],[
377         AC_MSG_RESULT([no])
378 ])
379 ])
380
381 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
382 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
383 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
384 LB_LINUX_TRY_COMPILE([
385         #include <linux/blkdev.h>
386 ],[
387         blk_queue_max_segments(NULL, 0);
388 ],[
389         AC_MSG_RESULT(yes)
390         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
391                   [blk_queue_max_segments is defined])
392 ],[
393         AC_MSG_RESULT(no)
394 ])
395 ])
396
397 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
398 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA],
399 tmp_flags="$EXTRA_KCFLAGS"
400 EXTRA_KCFLAGS="-Werror"
401 [AC_MSG_CHECKING([if quotactl_ops.set_dqblk takes struct fs_disk_quota])
402 LB_LINUX_TRY_COMPILE([
403         #include <linux/fs.h>
404         #include <linux/quota.h>
405 ],[
406         struct quotactl_ops qops = {};
407         struct fs_disk_quota fdq;
408         qops.set_dqblk(NULL, 0, 0, &fdq);
409 ],[
410         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1, [quotactl_ops.set_dqblk takes struct fs_disk_quota])
411         AC_MSG_RESULT([yes])
412 ],[
413         AC_MSG_RESULT([no])
414 ])
415 EXTRA_KCFLAGS="$tmp_flags"
416 ])
417
418 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
419 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND],
420 [AC_MSG_CHECKING([if dquot_suspend is defined])
421 LB_LINUX_TRY_COMPILE([
422         #include <linux/quotaops.h>
423 ],[
424         dquot_suspend(NULL, -1);
425 ],[
426         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
427         AC_MSG_RESULT([yes])
428 ],[
429         AC_MSG_RESULT([no])
430 ])
431 ])
432
433 #
434 # LC_QUOTA64
435 #
436 # Check if kernel has been patched for 64-bit quota limits support.
437 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
438 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
439 # that in the absence of quotaio_v1.h in the kernel headers.
440 #
441 AC_DEFUN([LC_QUOTA64],[
442         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
443 tmp_flags="$EXTRA_KCFLAGS"
444 EXTRA_KCFLAGS="-I$LINUX/fs"
445         LB_LINUX_TRY_COMPILE([
446                 #include <linux/kernel.h>
447                 #include <linux/fs.h>
448                 #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
449                 # include <quota/quotaio_v2.h>
450                 struct v2r1_disk_dqblk dqblk_r1;
451                 #else
452                 #include <linux/quota.h>
453                 int ver = QFMT_VFS_V1;
454                 #endif
455         ],[],[
456                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
457                 AC_MSG_RESULT([yes])
458         ],[
459                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
460                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
461                 ],[])
462                 AC_MSG_RESULT([no])
463         ])
464 EXTRA_KCFLAGS=$tmp_flags
465 ])
466
467 #
468 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
469 #
470 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
471 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
472 LB_LINUX_TRY_COMPILE([
473         #include <asm/atomic.h>
474         #include <linux/spinlock.h>
475         #include <linux/fs_struct.h>
476 ],[
477         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
478 ],[
479         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
480                   [fs_struct.lock use rwlock])
481         AC_MSG_RESULT([yes])
482 ],[
483         AC_MSG_RESULT([no])
484 ])
485 ])
486
487 #
488 # 2.6.36 super_operations add evict_inode method. it hybird of
489 # delete_inode & clear_inode.
490 #
491 AC_DEFUN([LC_SBOPS_EVICT_INODE],
492 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
493 LB_LINUX_TRY_COMPILE([
494         #include <linux/fs.h>
495 ],[
496         ((struct super_operations *)0)->evict_inode(NULL);
497 ],[
498         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
499                 [super_operations.evict_inode() is exist in kernel])
500         AC_MSG_RESULT([yes])
501 ],[
502         AC_MSG_RESULT([no])
503 ])
504 ])
505
506 #
507 # 2.6.35 file_operations.fsync taken 2 arguments.
508 # 3.0.0 file_operations.fsync takes 4 arguments.
509 #
510 AC_DEFUN([LC_FILE_FSYNC],
511 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
512 LB_LINUX_TRY_COMPILE([
513         #include <linux/fs.h>
514 ],[
515         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
516 ],[
517         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
518                 [file_operations.fsync takes 4 arguments])
519         AC_MSG_RESULT([yes, 4 args])
520 ],[
521         LB_LINUX_TRY_COMPILE([
522                 #include <linux/fs.h>
523         ],[
524            ((struct file_operations *)0)->fsync(NULL, 0);
525         ],[
526                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
527                         [file_operations.fsync takes 2 arguments])
528                 AC_MSG_RESULT([yes, 2 args])
529         ],[
530                 AC_MSG_RESULT([no])
531         ])
532 ])
533 ])
534
535 #
536 # 2.6.37 remove kernel_locked
537 #
538 AC_DEFUN([LC_KERNEL_LOCKED],
539 [AC_MSG_CHECKING([if kernel_locked is defined])
540 LB_LINUX_TRY_COMPILE([
541         #include <linux/smp_lock.h>
542 ],[
543         kernel_locked();
544 ],[
545         AC_MSG_RESULT([yes])
546         AC_DEFINE(HAVE_KERNEL_LOCKED, 1,
547                 [kernel_locked is defined])
548 ],[
549         AC_MSG_RESULT([no])
550 ])
551 ])
552
553 #
554 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
555 #
556 AC_DEFUN([LC_D_COMPARE_7ARGS],
557 [AC_MSG_CHECKING([if d_compare taken 7 arguments])
558 LB_LINUX_TRY_COMPILE([
559         #include <linux/dcache.h>
560 ],[
561         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
562 ],[
563         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1,
564                 [d_compare need 7 arguments])
565         AC_MSG_RESULT([yes])
566 ],[
567         AC_MSG_RESULT([no])
568 ])
569 ])
570
571 #
572 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
573 #
574 AC_DEFUN([LC_D_DELETE_CONST],
575 [AC_MSG_CHECKING([if d_delete has const declare on first parameter])
576 tmp_flags="$EXTRA_KCFLAGS"
577 EXTRA_KCFLAGS="-Werror"
578 LB_LINUX_TRY_COMPILE([
579         #include <linux/dcache.h>
580 ],[
581         const struct dentry *d = NULL;
582         ((struct dentry_operations*)0)->d_delete(d);
583 ],[
584         AC_DEFINE(HAVE_D_DELETE_CONST, const,
585                 [d_delete first parameter declared const])
586         AC_MSG_RESULT([yes])
587 ],[
588         AC_DEFINE(HAVE_D_DELETE_CONST, , [])
589         AC_MSG_RESULT([no])
590 ])
591 EXTRA_KCFLAGS="$tmp_flags"
592 ])
593
594 #
595 # 2.6.38 dcache_lock removed. rcu-walk commited.
596 #
597 AC_DEFUN([LC_DCACHE_LOCK],
598 [AC_MSG_CHECKING([if dcache_lock is exist])
599 LB_LINUX_TRY_COMPILE([
600         #include <linux/dcache.h>
601 ],[
602         spin_lock(&dcache_lock);
603 ],[
604         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
605                 [dcache_lock is exist])
606         AC_MSG_RESULT([yes])
607 ],[
608         AC_MSG_RESULT([no])
609 ])
610 ])
611
612 #
613 # 2.6.38 inode.i_rcu added.
614 #
615 AC_DEFUN([LC_INODE_I_RCU],
616 [AC_MSG_CHECKING([if inode.i_rcu exists])
617 LB_LINUX_TRY_COMPILE([
618         #include <linux/fs.h>
619 ],[
620         struct inode ino;
621         struct rcu_head rcu = {};
622         ino.i_rcu = rcu;
623 ],[
624         AC_DEFINE(HAVE_INODE_I_RCU, 1,
625                 [inode.i_rcu exists])
626         AC_MSG_RESULT([yes])
627 ],[
628         AC_MSG_RESULT([no])
629 ])
630 ])
631
632 #
633 # 2.6.38 export blkdev_get_by_dev
634 #
635 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
636 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
637 [fs/block_dev.c],[
638 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
639             [blkdev_get_by_dev is exported by the kernel])
640 ],[
641 ])
642 ])
643
644 #
645 # 2.6.38 export simple_setattr
646 #
647 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
648 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
649 [fs/libfs.c],[
650 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
651             [simple_setattr is exported by the kernel])
652 ],[
653 ])
654 ])
655
656 #
657 # 2.6.39 remove unplug_fn from request_queue.
658 #
659 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
660 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
661 LB_LINUX_TRY_COMPILE([
662         #include <linux/blkdev.h>
663 ],[
664         do{ }while(sizeof(((struct request_queue *)0)->unplug_fn));
665 ],[
666         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
667                   [request_queue has unplug_fn field])
668         AC_MSG_RESULT([yes])
669 ],[
670         AC_MSG_RESULT([no])
671 ])
672 ])
673
674 #
675 # 2.6.39 replace get_sb with mount in struct file_system_type
676 #
677 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT],
678 [AC_MSG_CHECKING([if file_system_type has mount field])
679 LB_LINUX_TRY_COMPILE([
680         #include <linux/fs.h>
681 ],[
682         struct file_system_type fst;
683         void *i = (void *) fst.mount;
684 ],[
685         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
686                 [struct file_system_type has mount field])
687         AC_MSG_RESULT([yes])
688 ],[
689         AC_MSG_RESULT([no])
690 ])
691 ])
692
693 #
694 # 3.0 dirty_inode() has a flag parameter
695 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
696 #
697 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG],
698 [AC_MSG_CHECKING([if dirty_inode super_operation takes flag])
699 LB_LINUX_TRY_COMPILE([
700         #include <linux/fs.h>
701 ],[
702         struct inode *inode;
703         inode->i_sb->s_op->dirty_inode(NULL, 0);
704 ],[
705         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
706                   [dirty_inode super_operation takes flag])
707         AC_MSG_RESULT([yes])
708 ],[
709         AC_MSG_RESULT([no])
710 ])
711 ])
712
713 #
714 # 2.6.38 generic_permission taken 4 parameters.
715 # in fact, it means rcu-walk aware permission bring.
716 #
717 # 3.1 generic_permission taken 2 parameters.
718 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
719 #
720 AC_DEFUN([LC_GENERIC_PERMISSION],
721 [AC_MSG_CHECKING([if generic_permission take 2 or 4 arguments])
722 LB_LINUX_TRY_COMPILE([
723         #include <linux/fs.h>
724 ],[
725         generic_permission(NULL, 0);
726 ],[
727         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
728                   [generic_permission taken 2 arguments])
729         AC_MSG_RESULT([yes, 2 args])
730 ],[
731         LB_LINUX_TRY_COMPILE([
732                 #include <linux/fs.h>
733         ],[
734                 generic_permission(NULL, 0, 0, NULL);
735         ],[
736                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
737                           [generic_permission taken 4 arguments])
738                 AC_MSG_RESULT([yes, 4 args])
739         ],[
740                 AC_MSG_RESULT([no])
741         ])
742 ])
743 ])
744
745 #
746 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
747 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
748 #
749 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS],
750 [AC_MSG_CHECKING([if lock-manager ops renamed to lm_xxx])
751 LB_LINUX_TRY_COMPILE([
752         #include <linux/fs.h>
753 ],[
754         struct lock_manager_operations lm_ops;
755         lm_ops.lm_compare_owner = NULL;
756 ],[
757         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
758                   [lock-manager ops renamed to lm_xxx])
759         AC_MSG_RESULT([yes])
760 ],[
761         AC_MSG_RESULT([no])
762 ])
763 ])
764
765 #
766 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait/
767 #     inode_dio_done instead.
768 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
769 #
770 AC_DEFUN([LC_INODE_DIO_WAIT],
771 [AC_MSG_CHECKING([if inode->i_alloc_sem is killed and use inode_dio_wait/done.])
772 LB_LINUX_TRY_COMPILE([
773         #include <linux/fs.h>
774 ],[
775         inode_dio_wait((struct inode *)0);
776         inode_dio_done((struct inode *)0);
777 ],[
778         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
779                   [inode->i_alloc_sem is killed and use inode_dio_wait/done])
780         AC_MSG_RESULT([yes])
781 ],[
782         AC_MSG_RESULT([no])
783 ])
784 ])
785
786 #
787 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
788 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
789 #
790 AC_DEFUN([LC_IOP_GET_ACL],
791 [AC_MSG_CHECKING([inode_operations has .get_acl member function])
792 LB_LINUX_TRY_COMPILE([
793         #include <linux/fs.h>
794 ],[
795         struct inode_operations iop;
796         iop.get_acl = NULL;
797 ],[
798         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
799                   [inode_operations has .get_acl member function])
800         AC_MSG_RESULT([yes])
801 ],[
802         AC_MSG_RESULT([no])
803 ])
804 ])
805
806 #
807 # 3.1 introduced generic_file_llseek_size()
808 #
809 AC_DEFUN([LC_FILE_LLSEEK_SIZE],
810         [LB_CHECK_SYMBOL_EXPORT([generic_file_llseek_size],
811         [fs/read_write.c],
812         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
813                    [generic_file_llseek_size is exported by the kernel])])
814 ])
815
816 #
817 # 3.2 request_queue.make_request_fn defined as function returns with void
818 # see kernel commit 5a7bbad27a410350e64a2d7f5ec18fc73836c14f
819 #
820 AC_DEFUN([LC_HAVE_VOID_MAKE_REQUEST_FN],
821 [AC_MSG_CHECKING([if request_queue.make_request_fn returns void but not int])
822 LB_LINUX_TRY_COMPILE([
823         #include <linux/blkdev.h>
824 ],[
825         int ret;
826         make_request_fn         *mrf;
827         ret = mrf(NULL, NULL);
828 ],[
829         AC_MSG_RESULT([no])
830 ],[
831         AC_DEFINE(HAVE_VOID_MAKE_REQUEST_FN, 1,
832                   [request_queue.make_request_fn returns void but not int])
833         AC_MSG_RESULT([yes])
834 ])
835 ])
836
837 #
838 # 3.2 protects inode->i_nlink from direct modification
839 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
840 # at the same time adds set_nlink(), so checks set_nlink() for it.
841 #
842 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK],
843 [AC_MSG_CHECKING([if inode->i_nlink is protected from direct modification])
844 LB_LINUX_TRY_COMPILE([
845         #include <linux/fs.h>
846 ],[
847         struct inode i;
848         set_nlink(&i, 1);
849 ],[
850         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
851                   [inode->i_nlink is protected from direct modification])
852         AC_MSG_RESULT([yes])
853 ],[
854         AC_MSG_RESULT([no])
855 ])
856 ])
857
858 #
859 # 3.3 introduces migrate_mode.h and migratepage has 4 args
860 #
861 AC_DEFUN([LC_HAVE_MIGRATE_HEADER],
862 [LB_CHECK_FILE([$LINUX/include/linux/migrate.h],[
863                 AC_DEFINE(HAVE_MIGRATE_H, 1,
864                 [kernel has include/linux/migrate.h])
865 ],[LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h],[
866                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
867                         [kernel has include/linux/migrate_mode.h])
868 ],[
869         AC_MSG_RESULT([no])
870 ])
871 ])
872 ])
873
874 AC_DEFUN([LC_MIGRATEPAGE_4ARGS],
875 [AC_MSG_CHECKING([if address_space_operations.migratepage has 4 args])
876 LB_LINUX_TRY_COMPILE([
877         #include <linux/fs.h>
878 #ifdef HAVE_MIGRATE_H
879         #include <linux/migrate.h>
880 #elif defined(HAVE_MIGRATE_MODE_H)
881         #include <linux/migrate_mode.h>
882 #endif
883 ],[
884         struct address_space_operations aops;
885
886         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
887 ],[
888         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
889                 [address_space_operations.migratepage has 4 args])
890         AC_MSG_RESULT([yes])
891 ],[
892         AC_MSG_RESULT([no])
893 ])
894 ])
895
896 #
897 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
898 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
899 #
900 AC_DEFUN([LC_SUPEROPS_USE_DENTRY],
901 [AC_MSG_CHECKING([if super_operations use dentry as parameter])
902 tmp_flags="$EXTRA_KCFLAGS"
903 EXTRA_KCFLAGS="-Werror"
904 LB_LINUX_TRY_COMPILE([
905         #include <linux/fs.h>
906         int show_options(struct seq_file *seq, struct dentry *root){
907                 return 0;
908         }
909 ],[
910         struct super_operations ops;
911         ops.show_options = show_options;
912 ],[
913         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
914                   [super_operations use dentry as parameter])
915         AC_MSG_RESULT([yes])
916 ],[
917         AC_MSG_RESULT([no])
918 ])
919 EXTRA_KCFLAGS="$tmp_flags"
920 ])
921
922 #
923 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
924 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
925 #
926 AC_DEFUN([LC_INODEOPS_USE_UMODE_T],
927 [AC_MSG_CHECKING([if inode_operations use umode_t as parameter])
928 tmp_flags="$EXTRA_KCFLAGS"
929 EXTRA_KCFLAGS="-Werror"
930 LB_LINUX_TRY_COMPILE([
931         #include <linux/fs.h>
932         #include <linux/types.h>
933         int my_mknod(struct inode *dir, struct dentry *dchild,
934                      umode_t mode, dev_t dev)
935         {
936                 return 0;
937         }
938 ],[
939         struct inode_operations ops;
940         ops.mknod = my_mknod;
941 ],[
942         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
943                   [inode_operations use umode_t as parameter])
944         AC_MSG_RESULT([yes])
945 ],[
946         AC_MSG_RESULT([no])
947 ])
948 EXTRA_KCFLAGS="$tmp_flags"
949 ])
950
951 # 3.4 kmap_atomic removes second argument
952 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
953 #
954 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG],
955 [AC_MSG_CHECKING([if kmap_atomic has only 1 argument])
956 LB_LINUX_TRY_COMPILE([
957         #include <linux/highmem.h>
958 ],[
959         kmap_atomic(NULL);
960 ],[
961         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
962                   [have kmap_atomic has only 1 argument])
963         AC_MSG_RESULT([yes])
964 ],[
965         AC_MSG_RESULT([no])
966 ])
967 ])
968
969 #
970 # 3.4 switchs touch_atime to struct path
971 # see kernel commit 68ac1234fb949b66941d94dce4157742799fc581
972 #
973 AC_DEFUN([LC_TOUCH_ATIME_1ARG],
974 [AC_MSG_CHECKING([if touch_atime use one argument])
975 LB_LINUX_TRY_COMPILE([
976         #include <linux/fs.h>
977 ],[
978         touch_atime((struct path *)NULL);
979 ],[
980         AC_DEFINE(HAVE_TOUCH_ATIME_1ARG, 1,
981                   [touch_atime use one argument])
982         AC_MSG_RESULT([yes])
983 ],[
984         AC_MSG_RESULT([no])
985 ])
986 ])
987
988 #
989 # 3.4 converts d_alloc_root to d_make_root
990 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
991 #
992 AC_DEFUN([LC_HAVE_D_MAKE_ROOT],
993 [AC_MSG_CHECKING([if have d_make_root])
994 LB_LINUX_TRY_COMPILE([
995         #include <linux/fs.h>
996 ],[
997         d_make_root((struct inode *)NULL);
998 ],[
999         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1000                   [have d_make_root])
1001         AC_MSG_RESULT([yes])
1002 ],[
1003         AC_MSG_RESULT([no])
1004 ])
1005 ])
1006
1007 #
1008 # 3.5 renames end_writeback() back to clear_inode()...
1009 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1010 #
1011 AC_DEFUN([LC_HAVE_CLEAR_INODE],
1012 [AC_MSG_CHECKING([if have clear_inode])
1013 LB_LINUX_TRY_COMPILE([
1014         #include <linux/fs.h>
1015 ],[
1016         clear_inode((struct inode *)NULL);
1017 ],[
1018         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1019                   [have clear_inode])
1020         AC_MSG_RESULT([yes])
1021 ],[
1022         AC_MSG_RESULT([no])
1023 ])
1024 ])
1025
1026 #
1027 # 3.5 encode_fh has parent inode passed in directly
1028 # see kernel commit b0b0382b
1029 #
1030 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT],
1031 [AC_MSG_CHECKING([if encode_fh have parent inode as parameter])
1032 tmp_flags="$EXTRA_KCFLAGS"
1033 EXTRA_KCFLAGS="-Werror"
1034 LB_LINUX_TRY_COMPILE([
1035         #include <linux/exportfs.h>
1036         #include <linux/fs.h>
1037         #include <linux/types.h>
1038         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1039         {
1040                 return 0;
1041         }
1042 ],[
1043         struct export_operations exp_op;
1044         exp_op.encode_fh = ll_encode_fh;
1045 ],[
1046         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1047                   [have parent inode as parameter])
1048         AC_MSG_RESULT([yes])
1049 ],[
1050         AC_MSG_RESULT([no])
1051 ])
1052 EXTRA_KCFLAGS="$tmp_flags"
1053 ])
1054
1055 # 3.5 has generic_file_llseek_size with 5 args
1056 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG],
1057 [AC_MSG_CHECKING([if kernel has generic_file_llseek_size with 5 args])
1058 LB_LINUX_TRY_COMPILE([
1059         #include <linux/fs.h>
1060 ],[
1061         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1062 ], [
1063         AC_MSG_RESULT([yes])
1064         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1065                 [kernel has generic_file_llseek_size with 5 args])
1066 ],[
1067         AC_MSG_RESULT([no])
1068 ])
1069 ])
1070
1071 #
1072 # 3.6 switch i_dentry/d_alias from list to hlist
1073 #
1074 AC_DEFUN([LC_HAVE_DENTRY_D_ALIAS_HLIST],
1075 [AC_MSG_CHECKING([if i_dentry/d_alias uses hlist])
1076 tmp_flags="$EXTRA_KCFLAGS"
1077 EXTRA_KCFLAGS="-Werror"
1078 LB_LINUX_TRY_COMPILE([
1079         #include <linux/fs.h>
1080         #include <linux/list.h>
1081 ],[
1082         struct inode inode;
1083         struct dentry dentry;
1084         struct hlist_head head;
1085         struct hlist_node node;
1086         inode.i_dentry = head;
1087         dentry.d_alias = node;
1088 ],[
1089         AC_DEFINE(HAVE_DENTRY_D_ALIAS_HLIST, 1,
1090                   [have i_dentry/d_alias uses hlist])
1091         AC_MSG_RESULT([yes])
1092 ],[
1093         AC_MSG_RESULT([no])
1094 ])
1095 EXTRA_KCFLAGS="$tmp_flags"
1096 ])
1097
1098 #
1099 # 3.6 dentry_open uses struct path as first argument
1100 # see kernel commit 765927b2
1101 #
1102 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH],
1103 [AC_MSG_CHECKING([if dentry_open uses struct path as first argument])
1104 tmp_flags="$EXTRA_KCFLAGS"
1105 EXTRA_KCFLAGS="-Werror"
1106 LB_LINUX_TRY_COMPILE([
1107         #include <linux/fs.h>
1108         #include <linux/path.h>
1109 ],[
1110         struct path path;
1111         dentry_open(&path, 0, NULL);
1112 ],[
1113         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1114                   [dentry_open uses struct path as first argument])
1115         AC_MSG_RESULT([yes])
1116 ],[
1117         AC_MSG_RESULT([no])
1118 ])
1119 EXTRA_KCFLAGS="$tmp_flags"
1120 ])
1121
1122 #
1123 # 3.6 vfs adds iop->atomic_open
1124 #
1125 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN],
1126 [AC_MSG_CHECKING([if iop has atomic_open])
1127 LB_LINUX_TRY_COMPILE([
1128         #include <linux/fs.h>
1129 ],[
1130         struct inode_operations iop;
1131         iop.atomic_open = NULL;
1132 ],[
1133         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1134                   [have iop atomic_open])
1135         AC_MSG_RESULT([yes])
1136 ],[
1137         AC_MSG_RESULT([no])
1138 ])
1139 ])
1140
1141 #
1142 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1143 #
1144 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS],
1145 [AC_MSG_CHECKING([if posix_acl_to_xattr takes struct user_namespace])
1146 LB_LINUX_TRY_COMPILE([
1147         #include <linux/fs.h>
1148         #include <linux/posix_acl_xattr.h>
1149 ],[
1150         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1151 ],[
1152         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1153                   [posix_acl_to_xattr takes struct user_namespace])
1154         AC_MSG_RESULT([yes])
1155 ],[
1156         AC_MSG_RESULT([no])
1157 ])
1158 ])
1159
1160 #
1161 # 3.8 struct file has new memeber f_inode
1162 #
1163 AC_DEFUN([LC_HAVE_FILE_F_INODE],
1164 [AC_MSG_CHECKING([if struct file has memeber f_inode])
1165 LB_LINUX_TRY_COMPILE([
1166         #include <linux/fs.h>
1167 ],[
1168         ((struct file *)0)->f_inode = NULL;
1169 ],[
1170         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1171                   [struct file has memeber f_inode])
1172         AC_MSG_RESULT([yes])
1173 ],[
1174         AC_MSG_RESULT([no])
1175 ])
1176 ])
1177
1178 #
1179 # 3.9 uses hlist_for_each_entry with 3 args
1180 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1181 #
1182 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG],
1183 [AC_MSG_CHECKING([if hlist_for_each_entry has 3 args])
1184 LB_LINUX_TRY_COMPILE([
1185         #include <linux/list.h>
1186         #include <linux/fs.h>
1187 ],[
1188         struct inode *inode;
1189         struct dentry *dentry;
1190         hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
1191                 continue;
1192         }
1193 ],[
1194         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1, [3 args])
1195         AC_MSG_RESULT([yes])
1196 ],[
1197         AC_MSG_RESULT([no])
1198 ])
1199 ])
1200
1201 #
1202 # 3.9 killed f_vfsmnt by
1203 # 182be684784334598eee1d90274e7f7aa0063616
1204 # replacement is f_path.mnt
1205 #
1206 AC_DEFUN([LC_HAVE_F_PATH_MNT],
1207 [AC_MSG_CHECKING([if struct file has f_path.mnt])
1208 LB_LINUX_TRY_COMPILE([
1209         #include <linux/fs.h>
1210 ],[
1211         struct file *fp = NULL;
1212         struct path  path;
1213
1214         path.mnt = fp->f_path.mnt;
1215 ],[
1216         AC_DEFINE(HAVE_F_PATH_MNT,1,[yes])
1217         AC_MSG_RESULT([yes])
1218 ],[
1219         AC_MSG_RESULT([no])
1220 ])
1221 ])
1222
1223 #
1224 # 3.10+ only supports procfs seq_files handling
1225 #
1226 AC_DEFUN([LC_HAVE_ONLY_PROCFS_SEQ],
1227 [AC_MSG_CHECKING([if procfs only supports using seq_files])
1228 LB_LINUX_TRY_COMPILE([
1229         #include <linux/proc_fs.h>
1230 ],[
1231         struct inode *inode = NULL;
1232         PDE_DATA(inode);
1233 ],[
1234         AC_DEFINE(HAVE_ONLY_PROCFS_SEQ, 1, [only seq_files supported])
1235         AC_MSG_RESULT([yes])
1236 ],[
1237         AC_MSG_RESULT([no])
1238 ])
1239 ])
1240
1241 #
1242 # LC_PROG_LINUX
1243 #
1244 # Lustre linux kernel checks
1245 #
1246 AC_DEFUN([LC_PROG_LINUX],
1247          [
1248          LC_CONFIG_PINGER
1249          LC_CONFIG_CHECKSUM
1250          LC_CONFIG_LIBLUSTRE_RECOVERY
1251          LC_CONFIG_HEALTH_CHECK_WRITE
1252          LC_CONFIG_LRU_RESIZE
1253          LC_LLITE_LLOOP_MODULE
1254
1255          LC_CAPA_CRYPTO
1256          LC_CONFIG_RMTCLIENT
1257          LC_CONFIG_GSS
1258
1259          # 2.6.32
1260          LC_BLK_QUEUE_MAX_SEGMENTS
1261
1262          # 2.6.34
1263          LC_HAVE_DQUOT_FS_DISK_QUOTA
1264          LC_HAVE_DQUOT_SUSPEND
1265
1266          # 2.6.35, 3.0.0
1267          LC_FILE_FSYNC
1268          LC_EXPORT_SIMPLE_SETATTR
1269          LC_EXPORT_TRUNCATE_COMPLETE_PAGE
1270
1271          # 2.6.36
1272          LC_FS_STRUCT_RWLOCK
1273          LC_SBOPS_EVICT_INODE
1274
1275          # 2.6.37
1276          LC_KERNEL_LOCKED
1277
1278          # 2.6.38
1279          LC_BLKDEV_GET_BY_DEV
1280          LC_GENERIC_PERMISSION
1281          LC_DCACHE_LOCK
1282          LC_INODE_I_RCU
1283          LC_D_COMPARE_7ARGS
1284          LC_D_DELETE_CONST
1285
1286          # 2.6.39
1287          LC_REQUEST_QUEUE_UNPLUG_FN
1288          LC_HAVE_FSTYPE_MOUNT
1289
1290          # 3.0
1291          LC_DIRTY_INODE_WITH_FLAG
1292
1293          # 3.1
1294          LC_LM_XXX_LOCK_MANAGER_OPS
1295          LC_INODE_DIO_WAIT
1296          LC_IOP_GET_ACL
1297          LC_FILE_LLSEEK_SIZE
1298          LC_INODE_PERMISION_2ARGS
1299
1300          # 3.2
1301          LC_HAVE_VOID_MAKE_REQUEST_FN
1302          LC_HAVE_PROTECT_I_NLINK
1303
1304          # 3.3
1305          LC_HAVE_MIGRATE_HEADER
1306          LC_MIGRATEPAGE_4ARGS
1307          LC_SUPEROPS_USE_DENTRY
1308          LC_INODEOPS_USE_UMODE_T
1309
1310          # 3.4
1311          LC_TOUCH_ATIME_1ARG
1312          LC_HAVE_D_MAKE_ROOT
1313          LC_KMAP_ATOMIC_HAS_1ARG
1314
1315          # 3.5
1316          LC_HAVE_CLEAR_INODE
1317          LC_HAVE_ENCODE_FH_PARENT
1318          LC_FILE_LLSEEK_SIZE_5ARG
1319
1320          # 3.6
1321          LC_HAVE_DENTRY_D_ALIAS_HLIST
1322          LC_DENTRY_OPEN_USE_PATH
1323          LC_HAVE_IOP_ATOMIC_OPEN
1324
1325          # 3.7
1326          LC_HAVE_POSIXACL_USER_NS
1327
1328          # 3.8
1329          LC_HAVE_FILE_F_INODE
1330
1331          # 3.9
1332          LC_HAVE_HLIST_FOR_EACH_3ARG
1333          LC_HAVE_F_PATH_MNT
1334
1335          # 3.10
1336          LC_HAVE_ONLY_PROCFS_SEQ
1337
1338          #
1339          if test x$enable_server != xno ; then
1340                 LC_FUNC_DEV_SET_RDONLY
1341                 LC_STACK_SIZE
1342                 LC_QUOTA64
1343                 LC_QUOTA_CONFIG
1344          fi
1345 ])
1346
1347 #
1348 # LC_CONFIG_CLIENT
1349 #
1350 # Check whether to build the client side of Lustre
1351 #
1352 AC_DEFUN([LC_CONFIG_CLIENT],
1353 [AC_MSG_CHECKING([whether to build Lustre client support])
1354 AC_ARG_ENABLE([client],
1355         AC_HELP_STRING([--disable-client],
1356                         [disable Lustre client support]),
1357         [],[enable_client='yes'])
1358 AC_MSG_RESULT([$enable_client])
1359 ])
1360
1361 #
1362 # LC_CONFIG_LIBLUSTRE
1363 #
1364 # whether to build liblustre
1365 #
1366 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1367 [AC_MSG_CHECKING([whether to build Lustre library])
1368 AC_ARG_ENABLE([liblustre],
1369         AC_HELP_STRING([--disable-liblustre],
1370                         [disable building of Lustre library]),
1371         [],[enable_liblustre=$with_sysio])
1372 AC_MSG_RESULT([$enable_liblustre])
1373 # only build sysio if liblustre is built
1374 with_sysio="$enable_liblustre"
1375
1376 AC_MSG_CHECKING([whether to build liblustre tests])
1377 AC_ARG_ENABLE([liblustre-tests],
1378         AC_HELP_STRING([--enable-liblustre-tests],
1379                         [enable liblustre tests, if --disable-tests is used]),
1380         [],[enable_liblustre_tests=$enable_tests])
1381 if test x$enable_liblustre != xyes ; then
1382    enable_liblustre_tests='no'
1383 fi
1384 AC_MSG_RESULT([$enable_liblustre_tests])
1385
1386 AC_MSG_CHECKING([whether to enable liblustre acl])
1387 AC_ARG_ENABLE([liblustre-acl],
1388         AC_HELP_STRING([--disable-liblustre-acl],
1389                         [disable ACL support for liblustre]),
1390         [],[enable_liblustre_acl=yes])
1391 AC_MSG_RESULT([$enable_liblustre_acl])
1392 if test x$enable_liblustre_acl = xyes ; then
1393   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1394 fi
1395
1396 #
1397 # --enable-mpitest
1398 #
1399 AC_ARG_ENABLE(mpitests,
1400         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
1401                            [include mpi tests]),
1402         [
1403          enable_mpitests=yes
1404          case $enableval in
1405          yes)
1406                 MPICC_WRAPPER=mpicc
1407                 ;;
1408          no)
1409                 enable_mpitests=no
1410                 ;;
1411          *)
1412                 MPICC_WRAPPER=$enableval
1413                  ;;
1414          esac
1415         ],
1416         [
1417         MPICC_WRAPPER=mpicc
1418         enable_mpitests=yes
1419         ]
1420 )
1421
1422 if test x$enable_mpitests != xno; then
1423         AC_MSG_CHECKING([whether mpitests can be built])
1424         oldcc=$CC
1425         CC=$MPICC_WRAPPER
1426         AC_LINK_IFELSE(
1427             [AC_LANG_PROGRAM([[
1428                     #include <mpi.h>
1429                 ]],[[
1430                     int flag;
1431                     MPI_Initialized(&flag);
1432                 ]])],
1433             [
1434                     AC_MSG_RESULT([yes])
1435             ],[
1436                     AC_MSG_RESULT([no])
1437                     enable_mpitests=no
1438         ])
1439         CC=$oldcc
1440 fi
1441 AC_SUBST(MPICC_WRAPPER)
1442
1443 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1444 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1445
1446 LC_CONFIG_PINGER
1447 LC_CONFIG_LIBLUSTRE_RECOVERY
1448 ])
1449
1450 #
1451 # LC_CONFIG_QUOTA
1452 #
1453 # whether to enable quota support global control
1454 #
1455 AC_DEFUN([LC_CONFIG_QUOTA],
1456 [AC_ARG_ENABLE([quota],
1457         AC_HELP_STRING([--enable-quota],
1458                         [enable quota support]),
1459         [],[enable_quota='yes'])
1460 ])
1461
1462 AC_DEFUN([LC_QUOTA],
1463 [#check global
1464 LC_CONFIG_QUOTA
1465 #check for utils
1466 if test x$enable_quota != xno -a x$enable_utils != xno; then
1467 AC_CHECK_HEADER(sys/quota.h,
1468                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
1469                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
1470 fi
1471 ])
1472
1473 #
1474 # LC_CONFIG_SPLIT
1475 #
1476 # whether to enable split support
1477 #
1478 AC_DEFUN([LC_CONFIG_SPLIT],
1479 [AC_MSG_CHECKING([whether to enable split support])
1480 AC_ARG_ENABLE([split],
1481         AC_HELP_STRING([--enable-split],
1482                         [enable split support]),
1483         [],[enable_split='no'])
1484 AC_MSG_RESULT([$enable_split])
1485 if test x$enable_split != xno; then
1486    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1487 fi
1488 ])
1489
1490 #
1491 # LC_LLITE_LLOOP_MODULE
1492 # lloop_llite.ko does not currently work with page sizes
1493 # of 64k or larger.
1494 #
1495 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
1496 [AC_MSG_CHECKING([whether to enable llite_lloop module])
1497 LB_LINUX_TRY_COMPILE([
1498         #include <asm/page.h>
1499 ],[
1500         #if PAGE_SIZE >= 65536
1501         #error "PAGE_SIZE >= 65536"
1502         #endif
1503 ],[
1504         enable_llite_lloop_module='yes'
1505         AC_MSG_RESULT([yes])
1506 ],[
1507         enable_llite_lloop_module='no'
1508         AC_MSG_RESULT([no])
1509 ])
1510 ])
1511
1512 #
1513 # LC_OSD_ADDON
1514 #
1515 # configure support for optional OSD implementation
1516 #
1517 AC_DEFUN([LC_OSD_ADDON],
1518 [AC_MSG_CHECKING([for osd])
1519 AC_ARG_WITH([osd],
1520         AC_HELP_STRING([--with-osd=path],
1521                        [set path to optional osd]),
1522         [
1523                 case $with_osd in
1524                         no)     ENABLEOSDADDON=0
1525                                 ;;
1526                         *)      OSDADDON="${with_osd}"
1527                                 ENABLEOSDADDON=1
1528                                 ;;
1529                 esac
1530         ], [
1531                 ENABLEOSDADDON=0
1532         ])
1533 if test $ENABLEOSDADDON -eq 0; then
1534         AC_MSG_RESULT([no])
1535         OSDADDON=
1536 else
1537         OSDMODNAME=`basename $OSDADDON`
1538         if test -e $LUSTRE/$OSDMODNAME; then
1539                 AC_MSG_RESULT([can't link])
1540                 OSDADDON=
1541         elif ln -s $OSDADDON $LUSTRE/$OSDMODNAME; then
1542                 AC_MSG_RESULT([$OSDMODNAME])
1543                 OSDADDON="subdir-m += $OSDMODNAME"
1544         else
1545                 AC_MSG_RESULT([can't link])
1546                 OSDADDON=
1547         fi
1548 fi
1549 AC_SUBST(OSDADDON)
1550 ])
1551
1552 #
1553 # LC_CONFIGURE
1554 #
1555 # other configure checks
1556 #
1557 AC_DEFUN([LC_CONFIGURE],
1558 [LC_CONFIG_OBD_BUFFER_SIZE
1559
1560 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
1561         CFLAGS="$CFLAGS -Werror"
1562 fi
1563
1564 # maximum MDS thread count
1565 LC_MDS_MAX_THREADS
1566
1567 # include/liblustre.h
1568 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1569
1570 # liblustre/llite_lib.h
1571 AC_CHECK_HEADERS([xtio.h file.h])
1572
1573 # liblustre/dir.c
1574 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1575
1576 # liblustre/lutil.c
1577 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1578 AC_CHECK_FUNCS([inet_ntoa])
1579
1580 # libsysio/src/readlink.c
1581 LC_READLINK_SSIZE_T
1582
1583 # libcfs prng.c - depends on linux/types.h from liblustre/dir.c
1584 AC_CHECK_HEADERS([linux/random.h], [], [],
1585                  [#ifdef HAVE_LINUX_TYPES_H
1586                   # include <linux/types.h>
1587                   #endif
1588                  ])
1589
1590 # utils/llverfs.c
1591 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1592
1593 # check for -lz support
1594 ZLIB=""
1595 AC_CHECK_LIB([z],
1596              [adler32],
1597              [AC_CHECK_HEADERS([zlib.h],
1598                                [ZLIB="-lz"
1599                                 AC_DEFINE([HAVE_ADLER], 1,
1600                                           [support alder32 checksum type])],
1601                                [AC_MSG_WARN([No zlib-devel package found,
1602                                              unable to use adler32 checksum])])],
1603              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
1604 )
1605 AC_SUBST(ZLIB)
1606
1607 SELINUX=""
1608 AC_CHECK_LIB([selinux],
1609                 [is_selinux_enabled],
1610                 [AC_CHECK_HEADERS([selinux.h],
1611                                 [SELINUX="-lselinux"
1612                                 AC_DEFINE([HAVE_SELINUX], 1,
1613                                                 [support for selinux ])],
1614                                 [AC_MSG_WARN([No selinux-devel package found,
1615                                                 unable to build selinux enabled
1616                                                 tools])])],
1617                 [AC_MSG_WARN([No selinux package found, unable to build selinux
1618                                 enabled tools])]
1619 )
1620 AC_SUBST(SELINUX)
1621
1622 # Super safe df
1623 AC_ARG_ENABLE([mindf],
1624       AC_HELP_STRING([--enable-mindf],
1625                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1626       [],[])
1627 if test "$enable_mindf" = "yes" ;  then
1628       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1629 fi
1630
1631 AC_ARG_ENABLE([fail_alloc],
1632         AC_HELP_STRING([--disable-fail-alloc],
1633                 [disable randomly alloc failure]),
1634         [],[enable_fail_alloc=yes])
1635 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1636 AC_MSG_RESULT([$enable_fail_alloc])
1637 if test x$enable_fail_alloc != xno ; then
1638         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1639 fi
1640
1641 AC_ARG_ENABLE([invariants],
1642         AC_HELP_STRING([--enable-invariants],
1643                 [enable invariant checking (cpu intensive)]),
1644         [],[])
1645 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
1646 AC_MSG_RESULT([$enable_invariants])
1647 if test x$enable_invariants = xyes ; then
1648         AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1, [enable invariant checking])
1649 fi
1650
1651 AC_ARG_ENABLE([lu_ref],
1652         AC_HELP_STRING([--enable-lu_ref],
1653                 [enable lu_ref reference tracking code]),
1654         [],[])
1655 AC_MSG_CHECKING([whether to track references with lu_ref])
1656 AC_MSG_RESULT([$enable_lu_ref])
1657 if test x$enable_lu_ref = xyes ; then
1658         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
1659 fi
1660
1661 AC_ARG_ENABLE([pgstate-track],
1662               AC_HELP_STRING([--enable-pgstate-track],
1663                              [enable page state tracking]),
1664               [enable_pgstat_track='yes'],[])
1665 AC_MSG_CHECKING([whether to enable page state tracking])
1666 AC_MSG_RESULT([$enable_pgstat_track])
1667 if test x$enable_pgstat_track = xyes ; then
1668         AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
1669                   [enable page state tracking code])
1670 fi
1671 ])
1672
1673 #
1674 # LC_CONDITIONALS
1675 #
1676 # AM_CONDITIONALS for lustre
1677 #
1678 AC_DEFUN([LC_CONDITIONALS],
1679 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1680 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1681 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1682 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1683 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1684 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1685 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1686 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1687 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1688 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1689 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1690 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1691 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
1692 ])
1693
1694 #
1695 # LC_CONFIG_FILES
1696 #
1697 # files that should be generated with AC_OUTPUT
1698 #
1699 AC_DEFUN([LC_CONFIG_FILES],
1700 [AC_CONFIG_FILES([
1701 lustre/Makefile
1702 lustre/autoMakefile
1703 lustre/autoconf/Makefile
1704 lustre/conf/Makefile
1705 lustre/contrib/Makefile
1706 lustre/doc/Makefile
1707 lustre/include/Makefile
1708 lustre/include/lustre_ver.h
1709 lustre/include/linux/Makefile
1710 lustre/include/darwin/Makefile
1711 lustre/include/lustre/Makefile
1712 lustre/kernel_patches/targets/2.6-rhel6.target
1713 lustre/kernel_patches/targets/2.6-rhel5.target
1714 lustre/kernel_patches/targets/2.6-sles11.target
1715 lustre/kernel_patches/targets/3.0-sles11.target
1716 lustre/kernel_patches/targets/3.0-sles11sp3.target
1717 lustre/kernel_patches/targets/2.6-fc11.target
1718 lustre/kernel_patches/targets/2.6-fc12.target
1719 lustre/kernel_patches/targets/2.6-fc15.target
1720 lustre/kernel_patches/targets/3.x-fc18.target
1721 lustre/ldlm/Makefile
1722 lustre/fid/Makefile
1723 lustre/fid/autoMakefile
1724 lustre/liblustre/Makefile
1725 lustre/liblustre/tests/Makefile
1726 lustre/liblustre/tests/mpi/Makefile
1727 lustre/llite/Makefile
1728 lustre/llite/autoMakefile
1729 lustre/lclient/Makefile
1730 lustre/lov/Makefile
1731 lustre/lov/autoMakefile
1732 lustre/mdc/Makefile
1733 lustre/mdc/autoMakefile
1734 lustre/lmv/Makefile
1735 lustre/lmv/autoMakefile
1736 lustre/lfsck/Makefile
1737 lustre/lfsck/autoMakefile
1738 lustre/mdt/Makefile
1739 lustre/mdt/autoMakefile
1740 lustre/mdd/Makefile
1741 lustre/mdd/autoMakefile
1742 lustre/fld/Makefile
1743 lustre/fld/autoMakefile
1744 lustre/obdclass/Makefile
1745 lustre/obdclass/autoMakefile
1746 lustre/obdclass/linux/Makefile
1747 lustre/obdecho/Makefile
1748 lustre/obdecho/autoMakefile
1749 lustre/ofd/Makefile
1750 lustre/ofd/autoMakefile
1751 lustre/osc/Makefile
1752 lustre/osc/autoMakefile
1753 lustre/ost/Makefile
1754 lustre/ost/autoMakefile
1755 lustre/osd-ldiskfs/Makefile
1756 lustre/osd-ldiskfs/autoMakefile
1757 lustre/osd-zfs/Makefile
1758 lustre/osd-zfs/autoMakefile
1759 lustre/mgc/Makefile
1760 lustre/mgc/autoMakefile
1761 lustre/mgs/Makefile
1762 lustre/mgs/autoMakefile
1763 lustre/target/Makefile
1764 lustre/ptlrpc/Makefile
1765 lustre/ptlrpc/autoMakefile
1766 lustre/ptlrpc/gss/Makefile
1767 lustre/ptlrpc/gss/autoMakefile
1768 lustre/quota/Makefile
1769 lustre/quota/autoMakefile
1770 lustre/scripts/Makefile
1771 lustre/tests/Makefile
1772 lustre/tests/mpi/Makefile
1773 lustre/utils/Makefile
1774 lustre/utils/gss/Makefile
1775 lustre/osp/Makefile
1776 lustre/osp/autoMakefile
1777 lustre/lod/Makefile
1778 lustre/lod/autoMakefile
1779 lustre/obdclass/darwin/Makefile
1780 ])
1781 ])