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="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ]) # LC_PATH_DEFAULTS
  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*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ]) # LC_TARGET_SUPPORTED
  48
  49 #
  50 # LC_CONFIG_OBD_BUFFER_SIZE
  51 #
  52 # the maximum buffer size of lctl ioctls
  53 #
  54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE], [
  55 AC_MSG_CHECKING([for maximum OBD ioctl size])
  56 AC_ARG_WITH([obd-buffer-size],
  57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  58                 [set lctl ioctl maximum bytes (default=8192)]),
  59         [OBD_BUFFER_SIZE=$with_obd_buffer_size],
  60         [OBD_BUFFER_SIZE=8192])
  61 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  62 AC_DEFINE_UNQUOTED(CONFIG_LUSTRE_OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE,
  63         [IOCTL Buffer Size])
  64 ]) # LC_CONFIG_OBD_BUFFER_SIZE
  65
  66 #
  67 # LC_GLIBC_SUPPORT_FHANDLES
  68 #
  69 AC_DEFUN([LC_GLIBC_SUPPORT_FHANDLES], [
  70 AC_CHECK_FUNCS([name_to_handle_at],
  71         [AC_DEFINE(HAVE_FHANDLE_GLIBC_SUPPORT, 1,
  72                 [file handle and related syscalls are supported])],
  73         [AC_MSG_WARN([file handle and related syscalls are not supported])])
  74 ]) # LC_GLIBC_SUPPORT_FHANDLES
  75
  76 #
  77 # LC_FUNC_DEV_SET_RDONLY
  78 #
  79 # check whether dev_set_rdonly is exported.  This is needed until we
  80 # have another mechanism to fence IO from the underlying device.
  81 #
  82 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY], [
  83 LB_CHECK_EXPORT([dev_set_rdonly], [block/ll_rw_block.c block/blk-core.c],
  84         [AC_DEFINE(HAVE_DEV_SET_RDONLY, 1,
  85                 [kernel exports dev_set_rdonly])],
  86         [AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])])
  87 ]) # LC_FUNC_DEV_SET_RDONLY
  88
  89 #
  90 # LC_STACK_SIZE
  91 #
  92 # Ensure the stack size is at least 8k in Lustre server (all kernels)
  93 #
  94 AC_DEFUN([LC_STACK_SIZE], [
  95 LB_CHECK_COMPILE([if stack size is at least 8k],
  96 stack_size_8k, [
  97         #include <linux/thread_info.h>
  98 ], [
  99         #if THREAD_SIZE < 8192
 100         #error "stack size < 8192"
 101         #endif
 102 ], [], [AC_MSG_ERROR([
 103
 104 Lustre requires that Linux is configured with at least a 8KB stack.
 105 ])])
 106 ]) # LC_STACK_SIZE
 107
 108 #
 109 # LC_MDS_MAX_THREADS
 110 #
 111 # Allow the user to set the MDS thread upper limit
 112 #
 113 AC_DEFUN([LC_MDS_MAX_THREADS], [
 114 AC_MSG_CHECKING([for maximum number of MDS threads])
 115 AC_ARG_WITH([mds_max_threads],
 116         AC_HELP_STRING([--with-mds-max-threads=count],
 117                 [maximum threads available on the MDS: (default=512)]),
 118         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
 119                 [maximum number of MDS threads])])
 120 AC_MSG_RESULT([$with_mds_max_threads])
 121 ]) # LC_MDS_MAX_THREADS
 122
 123 #
 124 # LC_CONFIG_PINGER
 125 #
 126 # the pinger is temporary, until we have the recovery node in place
 127 #
 128 AC_DEFUN([LC_CONFIG_PINGER], [
 129 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 130 AC_ARG_ENABLE([pinger],
 131         AC_HELP_STRING([--disable-pinger],
 132                 [disable recovery pinger support]),
 133         [], [enable_pinger="yes"])
 134 AC_MSG_RESULT([$enable_pinger])
 135 AS_IF([test "x$enable_pinger" != xno],
 136         [AC_DEFINE(ENABLE_PINGER, 1,[Use the Pinger])])
 137 ]) # LC_CONFIG_PINGER
 138
 139 #
 140 # LC_CONFIG_CHECKSUM
 141 #
 142 # do checksum of bulk data between client and OST
 143 #
 144 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 145 AC_MSG_CHECKING([whether to enable data checksum support])
 146 AC_ARG_ENABLE([checksum],
 147         AC_HELP_STRING([--disable-checksum],
 148                 [disable data checksum support]),
 149         [], [enable_checksum="yes"])
 150 AC_MSG_RESULT([$enable_checksum])
 151 AS_IF([test "x$enable_checksum" != xno],
 152         [AC_DEFINE(ENABLE_CHECKSUM, 1, [do data checksums])])
 153 ]) # LC_CONFIG_CHECKSUM
 154
 155 #
 156 # LC_CONFIG_HEALTH_CHECK_WRITE
 157 #
 158 # Turn off the actual write to the disk
 159 #
 160 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 161 AC_MSG_CHECKING([whether to enable a write with the health check])
 162 AC_ARG_ENABLE([health_write],
 163         AC_HELP_STRING([--enable-health_write],
 164                 [enable disk writes when doing health check]),
 165         [], [enable_health_write="no"])
 166 AC_MSG_RESULT([$enable_health_write])
 167 AS_IF([test "x$enable_health_write" != xno],
 168         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 169 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 170
 171 #
 172 # LC_CONFIG_LRU_RESIZE
 173 #
 174 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 175 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 176 AC_ARG_ENABLE([lru_resize],
 177         AC_HELP_STRING([--enable-lru-resize],
 178                 [enable lru resize support]),
 179         [], [enable_lru_resize="yes"])
 180 AC_MSG_RESULT([$enable_lru_resize])
 181 AS_IF([test "x$enable_lru_resize" != xno],
 182         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 183 ]) # LC_CONFIG_LRU_RESIZE
 184
 185 #
 186 # LC_QUOTA_CONFIG
 187 #
 188 # Quota support. The kernel must support CONFIG_QUOTA.
 189 #
 190 AC_DEFUN([LC_QUOTA_CONFIG], [
 191 LB_CHECK_CONFIG_IM([QUOTA], [],
 192         [AC_MSG_ERROR([
 193
 194 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 195 ])])
 196 ]) # LC_QUOTA_CONFIG
 197
 198 #
 199 # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 200 #
 201 # truncate_complete_page() has never been exported from an upstream kernel
 202 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 203 # delete_from_page_cache() is exported from 2.6.39
 204 #
 205 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE], [
 206 LB_CHECK_EXPORT([truncate_complete_page], [mm/truncate.c],
 207         [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 208                 [kernel export truncate_complete_page])])
 209 LB_CHECK_EXPORT([remove_from_page_cache], [mm/filemap.c],
 210         [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 211                 [kernel export remove_from_page_cache])])
 212 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
 213         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 214                 [kernel export delete_from_page_cache])])
 215 ]) # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 216
 217 #
 218 # LC_CONFIG_GSS_KEYRING
 219 #
 220 # default 'auto', tests for dependencies, if found, enables;
 221 # only called if gss is enabled
 222 #
 223 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 224 AC_MSG_CHECKING([whether to enable gss keyring backend])
 225 AC_ARG_ENABLE([gss_keyring],
 226         [AC_HELP_STRING([--disable-gss-keyring],
 227                 [disable gss keyring backend])],
 228         [], [enable_gss_keyring="auto"])
 229 AC_MSG_RESULT([$enable_gss_keyring])
 230 AS_IF([test "x$enable_gss_keyring" != xno], [
 231         LB_CHECK_CONFIG_IM([KEYS], [], [
 232                 gss_keyring_conf_test="fail"
 233                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 234
 235         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 236                 gss_keyring_conf_test="fail"
 237                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 238
 239         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 240                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 241                         [Define this if you enable gss keyring backend])
 242                 enable_gss_keyring="yes"
 243         ], [
 244                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 245                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 246                 ])
 247         ])
 248 ])
 249 ]) # LC_CONFIG_GSS_KEYRING
 250
 251 #
 252 # LC_HAVE_CRED_TGCRED
 253 #
 254 # rhel7 struct cred has no member tgcred
 255 #
 256 AC_DEFUN([LC_HAVE_CRED_TGCRED], [
 257 LB_CHECK_COMPILE([if 'struct cred' has member 'tgcred'],
 258 cred_tgcred, [
 259         #include <linux/cred.h>
 260 ],[
 261         ((struct cred *)0)->tgcred = NULL;
 262 ],[
 263         AC_DEFINE(HAVE_CRED_TGCRED, 1,
 264                 [struct cred has member tgcred])
 265 ])
 266 ]) # LC_HAVE_CRED_TGCRED
 267
 268 #
 269 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 270 #
 271 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 272 #
 273 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 274 LB_CHECK_COMPILE([if 'key_type->instantiate' has two args],
 275 key_type_instantiate_2args, [
 276         #include <linux/key-type.h>
 277 ],[
 278         ((struct key_type *)0)->instantiate(0, NULL);
 279 ],[
 280         AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 281                 [key_type->instantiate has two args])
 282 ])
 283 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 284
 285 #
 286 # LC_CONFIG_SUNRPC
 287 #
 288 AC_DEFUN([LC_CONFIG_SUNRPC], [
 289 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 290         AS_IF([test "x$sunrpc_required" = xyes], [
 291                 AC_MSG_ERROR([
 292
 293 kernel SUNRPC support is required by using GSS.
 294 ])
 295         ])])
 296 ]) # LC_CONFIG_SUNRPC
 297
 298 #
 299 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 300 #
 301 # Build gss and related tools of Lustre. Currently both kernel and user space
 302 # parts are depend on linux platform.
 303 #
 304 AC_DEFUN([LC_CONFIG_GSS], [
 305 AC_MSG_CHECKING([whether to enable gss support])
 306 AC_ARG_ENABLE([gss],
 307         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 308         [], [enable_gss="auto"])
 309 AC_MSG_RESULT([$enable_gss])
 310
 311 AS_IF([test "x$enable_gss" != xno], [
 312         LC_CONFIG_GSS_KEYRING
 313         LC_HAVE_CRED_TGCRED
 314         LC_KEY_TYPE_INSTANTIATE_2ARGS
 315         sunrpc_required=$enable_gss
 316         LC_CONFIG_SUNRPC
 317         sunrpc_required="no"
 318
 319         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 320                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 321         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 322                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 323         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 324                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 325         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 326                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 327
 328         require_krb5=$enable_gss
 329         AC_KERBEROS_V5
 330         require_krb5="no"
 331
 332         AS_IF([test -n "$KRBDIR"], [
 333                 gss_conf_test="success"
 334         ], [
 335                 gss_conf_test="failure"
 336         ])
 337
 338         AS_IF([test "x$gss_conf_test" = xsuccess], [
 339                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 340                 enable_gss="yes"
 341         ], [
 342                 enable_gss="no"
 343         ])
 344
 345         enable_ssk=$enable_gss
 346 ])
 347 ]) # LC_CONFIG_GSS
 348
 349 # LC_OPENSSL_SSK
 350 #
 351 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 352 AC_DEFUN([LC_OPENSSL_SSK], [
 353 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 354 AS_IF([test "x$enable_ssk" != xno], [
 355 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 356         #include <openssl/hmac.h>
 357         #include <openssl/evp.h>
 358
 359         int main(void) {
 360                 int rc;
 361                 HMAC_CTX ctx;
 362                 HMAC_CTX_init(&ctx);
 363                 rc = HMAC_Init_ex(&ctx, "test", 4, EVP_md_null(), NULL);
 364         }
 365 ])],[AC_DEFINE(HAVE_OPENSSL_SSK, 1,
 366                [OpenSSL HMAC functions needed for SSK])],
 367         [enable_ssk="no"])
 368 ])
 369 AC_MSG_RESULT([$enable_ssk])
 370 ]) # LC_OPENSSL_SSK
 371
 372 # LC_INODE_PERMISION_2ARGS
 373 #
 374 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 375 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 376 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 377 # v3.1 onward have a 2 arg version (inode, mask)
 378 #
 379 AC_DEFUN([LC_INODE_PERMISION_2ARGS], [
 380 LB_CHECK_COMPILE([if 'inode_operations->permission' has two args],
 381 inode_ops_permission_2args, [
 382         #include <linux/fs.h>
 383 ],[
 384         struct inode *inode __attribute__ ((unused));
 385
 386         inode = NULL;
 387         inode->i_op->permission(NULL, 0);
 388 ],[
 389         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 390                 [inode_operations->permission has two args])
 391 ])
 392 ]) # LC_INODE_PERMISION_2ARGS
 393
 394 #
 395 # LC_BLK_QUEUE_MAX_SEGMENTS
 396 #
 397 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 398 #
 399 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS], [
 400 LB_CHECK_COMPILE([if 'blk_queue_max_segments' is defined],
 401 blk_queue_max_segments, [
 402         #include <linux/blkdev.h>
 403 ],[
 404         blk_queue_max_segments(NULL, 0);
 405 ],[
 406         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 407                 [blk_queue_max_segments is defined])
 408 ])
 409 ]) # LC_BLK_QUEUE_MAX_SEGMENTS
 410
 411 #
 412 # LC_HAVE_DQUOT_FS_DISK_QUOTA
 413 #
 414 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 415 #
 416 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA], [
 417 tmp_flags="$EXTRA_KCFLAGS"
 418 EXTRA_KCFLAGS="-Werror"
 419 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct fs_disk_quota],
 420 fs_disk_quota, [
 421         #include <linux/fs.h>
 422         #include <linux/quota.h>
 423 ],[
 424         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 425 ],[
 426         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 427                 [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 428 ],[
 429         LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct kqid & fs_disk_quota],
 430         kqid_fs_disk_quota, [
 431                 #include <linux/fs.h>
 432                 #include <linux/quota.h>
 433         ],[
 434                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 435         ],[
 436                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 437                         [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 438                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
 439                         [quotactl_ops.set_dqblk takes struct kqid])
 440         ])
 441 ])
 442 EXTRA_KCFLAGS="$tmp_flags"
 443 ]) # LC_HAVE_DQUOT_FS_DISK_QUOTA
 444
 445 #
 446 # LC_HAVE_DQUOT_SUSPEND
 447 #
 448 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 449 #
 450 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND], [
 451 LB_CHECK_COMPILE([if 'dquot_suspend' is defined],
 452 dquot_suspend, [
 453         #include <linux/quotaops.h>
 454 ],[
 455         dquot_suspend(NULL, -1);
 456 ],[
 457         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 458 ])
 459 ]) # LC_HAVE_DQUOT_SUSPEND
 460
 461 #
 462 # LC_QUOTA64
 463 #
 464 # Check if kernel has been patched for 64-bit quota limits support.
 465 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 466 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 467 # that in the absence of quotaio_v1.h in the kernel headers.
 468 #
 469 AC_DEFUN([LC_QUOTA64], [
 470 tmp_flags="$EXTRA_KCFLAGS"
 471 EXTRA_KCFLAGS="-I$LINUX/fs"
 472 LB_CHECK_COMPILE([if kernel has 64-bit quota limits support],
 473 quota64, [
 474         #include <linux/kernel.h>
 475         #include <linux/fs.h>
 476         #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 477         #include <quota/quotaio_v2.h>
 478         struct v2r1_disk_dqblk dqblk_r1;
 479         #else
 480         #include <linux/quota.h>
 481         int ver = QFMT_VFS_V1;
 482         #endif
 483 ], [], [
 484         AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 485 ],[
 486         LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],
 487                 [AC_MSG_ERROR([You have got no 64-bit kernel quota support.])])
 488 ])
 489 EXTRA_KCFLAGS=$tmp_flags
 490 ]) # LC_QUOTA64
 491
 492 #
 493 # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 494 #
 495 # 2.6.34 adds __add_wait_queue_exclusive
 496 #
 497 AC_DEFUN([LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE], [
 498 LB_CHECK_COMPILE([if '__add_wait_queue_exclusive' exists],
 499 __add_wait_queue_exclusive, [
 500         #include <linux/wait.h>
 501 ],[
 502         wait_queue_head_t queue;
 503         wait_queue_t      wait;
 504         __add_wait_queue_exclusive(&queue, &wait);
 505 ],[
 506         AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
 507                   [__add_wait_queue_exclusive exists])
 508 ])
 509 ]) # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 510
 511 #
 512 # LC_FS_STRUCT_RWLOCK
 513 #
 514 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 515 #
 516 AC_DEFUN([LC_FS_STRUCT_RWLOCK], [
 517 LB_CHECK_COMPILE([if 'fs_struct.lock' use rwlock],
 518 fs_struct_rwlock, [
 519         #include <asm/atomic.h>
 520         #include <linux/spinlock.h>
 521         #include <linux/fs_struct.h>
 522 ],[
 523         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 524 ],[
 525         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1, [fs_struct.lock use rwlock])
 526 ])
 527 ]) # LC_FS_STRUCT_RWLOCK
 528
 529 #
 530 # LC_SBOPS_EVICT_INODE
 531 #
 532 # 2.6.36 super_operations add evict_inode method. it hybird of
 533 # delete_inode & clear_inode.
 534 #
 535 AC_DEFUN([LC_SBOPS_EVICT_INODE], [
 536 LB_CHECK_COMPILE([if 'super_operations.evict_inode' exist],
 537 super_ops_evict_inode, [
 538         #include <linux/fs.h>
 539 ],[
 540         ((struct super_operations *)0)->evict_inode(NULL);
 541 ],[
 542         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 543                 [super_operations.evict_inode() is exist in kernel])
 544 ])
 545 ]) # LC_SBOPS_EVICT_INODE
 546
 547 #
 548 # LC_FILE_FSYNC
 549 #
 550 # 2.6.35 file_operations.fsync taken 2 arguments.
 551 # 3.0.0 file_operations.fsync takes 4 arguments.
 552 #
 553 AC_DEFUN([LC_FILE_FSYNC], [
 554 LB_CHECK_COMPILE([if 'file_operations.fsync' takes 4 arguments],
 555 file_ops_fsync_4args, [
 556         #include <linux/fs.h>
 557 ],[
 558         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 559 ],[
 560         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 561                 [file_operations.fsync takes 4 arguments])
 562 ],[
 563         LB_CHECK_COMPILE([if 'file_operations.fsync' takes 2 arguments],
 564         file_ops_fsync_2args, [
 565                 #include <linux/fs.h>
 566         ],[
 567                 ((struct file_operations *)0)->fsync(NULL, 0);
 568         ],[
 569                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 570                         [file_operations.fsync takes 2 arguments])
 571         ])
 572 ])
 573 ]) # LC_FILE_FSYNC
 574
 575 #
 576 # LC_KERNEL_LOCKED
 577 #
 578 # 2.6.37 remove kernel_locked
 579 #
 580 AC_DEFUN([LC_KERNEL_LOCKED], [
 581 LB_CHECK_COMPILE([if 'kernel_locked' is defined],
 582 kernel_locked, [
 583         #include <linux/smp_lock.h>
 584 ],[
 585         kernel_locked();
 586 ],[
 587         AC_DEFINE(HAVE_KERNEL_LOCKED, 1, [kernel_locked is defined])
 588 ])
 589 ]) # LC_KERNEL_LOCKED
 590
 591 #
 592 # LC_D_COMPARE_7ARGS
 593 #
 594 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 595 #
 596 AC_DEFUN([LC_D_COMPARE_7ARGS], [
 597 LB_CHECK_COMPILE([if 'dentry_operations.d_compare()' taken 7 arguments],
 598 dentry_ops_d_compare_7arg, [
 599         #include <linux/dcache.h>
 600 ],[
 601         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 602 ],[
 603         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1, [d_compare need 7 arguments])
 604 ])
 605 ]) # LC_D_COMPARE_7ARGS
 606
 607 #
 608 # LC_D_DELETE_CONST
 609 #
 610 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 611 #
 612 AC_DEFUN([LC_D_DELETE_CONST], [
 613 tmp_flags="$EXTRA_KCFLAGS"
 614 EXTRA_KCFLAGS="-Werror"
 615 LB_CHECK_COMPILE([if 'dentry_operations.d_delete()' has const declare on first parameter],
 616 dentry_ops_d_delete_1st_const, [
 617         #include <linux/dcache.h>
 618 ],[
 619         const struct dentry *d = NULL;
 620         ((struct dentry_operations*)0)->d_delete(d);
 621 ],[
 622         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 623                 [d_delete first parameter declared const])
 624 ],[
 625         AC_DEFINE(HAVE_D_DELETE_CONST, [],
 626                 [d_delete first parameter declared is not const])
 627 ])
 628 EXTRA_KCFLAGS="$tmp_flags"
 629 ]) # LC_D_DELETE_CONST
 630
 631 #
 632 # LC_DCACHE_LOCK
 633 #
 634 # 2.6.38 dcache_lock removed. rcu-walk committed.
 635 #
 636 AC_DEFUN([LC_DCACHE_LOCK], [
 637 LB_CHECK_COMPILE([if 'dcache_lock' is exist],
 638 dcache_lock, [
 639         #include <linux/dcache.h>
 640 ],[
 641         spin_lock(&dcache_lock);
 642 ],[
 643         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 644                 [dcache_lock is exist])
 645 ])
 646 ]) # LC_DCACHE_LOCK
 647
 648 #
 649 # LC_INODE_I_RCU
 650 #
 651 # 2.6.38 inode.i_rcu added.
 652 #
 653 AC_DEFUN([LC_INODE_I_RCU], [
 654 LB_CHECK_COMPILE([if 'inode.i_rcu' exists],
 655 inode_i_rcu, [
 656         #include <linux/fs.h>
 657 ],[
 658         struct inode ino;
 659         struct rcu_head rcu = {};
 660         ino.i_rcu = rcu;
 661 ],[
 662         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 663                 [inode.i_rcu exists])
 664 ])
 665 ]) # LC_INODE_I_RCU
 666
 667 #
 668 # LC_BLKDEV_GET_BY_DEV
 669 #
 670 # 2.6.38 export blkdev_get_by_dev
 671 #
 672 AC_DEFUN([LC_BLKDEV_GET_BY_DEV], [
 673 LB_CHECK_EXPORT([blkdev_get_by_dev], [fs/block_dev.c],
 674         [AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 675                 [blkdev_get_by_dev is exported by the kernel])])
 676 ]) # LC_BLKDEV_GET_BY_DEV
 677
 678 #
 679 # LC_EXPORT_SIMPLE_SETATTR
 680 #
 681 # 2.6.38 export simple_setattr
 682 #
 683 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR], [
 684 LB_CHECK_EXPORT([simple_setattr], [fs/libfs.c],
 685         [AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 686                 [simple_setattr is exported by the kernel])])
 687 ]) # LC_EXPORT_SIMPLE_SETATTR
 688
 689 #
 690 # LC_HAVE_BLK_PLUG
 691 #
 692 # 2.6.38 add struct blk_plug
 693 #
 694 AC_DEFUN([LC_HAVE_BLK_PLUG], [
 695 LB_CHECK_COMPILE([if 'struct blk_plug' exists],
 696 blk_plug, [
 697         #include <linux/blkdev.h>
 698 ],[
 699         struct blk_plug plug;
 700
 701         blk_start_plug(&plug);
 702         blk_finish_plug(&plug);
 703 ],[
 704         AC_DEFINE(HAVE_BLK_PLUG, 1,
 705                 [blk_plug struct exists])
 706 ])
 707 ]) # LC_HAVE_BLK_PLUG
 708
 709 #
 710 # LC_IOP_TRUNCATE
 711 #
 712 # truncate callback removed since 2.6.39
 713 #
 714 AC_DEFUN([LC_IOP_TRUNCATE], [
 715 LB_CHECK_COMPILE([if 'inode_operations' has '.truncate' member function],
 716 inode_ops_truncate, [
 717         #include <linux/fs.h>
 718 ],[
 719         ((struct inode_operations *)0)->truncate(NULL);
 720 ],[
 721         AC_DEFINE(HAVE_INODEOPS_TRUNCATE, 1,
 722                 [inode_operations has .truncate member function])
 723 ])
 724 ]) # LC_IOP_TRUNCATE
 725
 726 #
 727 # LC_REQUEST_QUEUE_UNPLUG_FN
 728 #
 729 # 2.6.39 remove unplug_fn from request_queue.
 730 #
 731 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN], [
 732 LB_CHECK_COMPILE([if 'request_queue' has 'unplug_fn' field],
 733 request_queue_unplug_fn, [
 734         #include <linux/blkdev.h>
 735 ],[
 736         do {} while(sizeof(((struct request_queue *)0)->unplug_fn));
 737 ],[
 738         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
 739                 [request_queue has unplug_fn field])
 740 ])
 741 ]) # LC_REQUEST_QUEUE_UNPLUG_FN
 742
 743 #
 744 # LC_HAVE_FSTYPE_MOUNT
 745 #
 746 # 2.6.39 replace get_sb with mount in struct file_system_type
 747 #
 748 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT], [
 749 LB_CHECK_COMPILE([if 'file_system_type' has 'mount' field],
 750 file_system_type_mount, [
 751         #include <linux/fs.h>
 752 ],[
 753         struct file_system_type fst;
 754         void *i = (void *) fst.mount;
 755 ],[
 756         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 757                 [struct file_system_type has mount field])
 758 ])
 759 ]) # LC_HAVE_FSTYPE_MOUNT
 760
 761 #
 762 # LC_HAVE_FHANDLE_SYSCALLS
 763 #
 764 # 2.6.39 The open_by_handle_at() and name_to_handle_at() system calls were
 765 # added to Linux kernel 2.6.39.
 766 # Check if client supports these functions
 767 #
 768 AC_DEFUN([LC_HAVE_FHANDLE_SYSCALLS], [
 769 LB_CHECK_CONFIG_IM([FHANDLE],[
 770         AC_DEFINE(HAVE_FHANDLE_SYSCALLS, 1,
 771                 [kernel supports fhandles and related syscalls])
 772         ])
 773 ]) # LC_HAVE_FHANDLE_SYSCALLS
 774
 775 #
 776 # LC_HAVE_INODE_OWNER_OR_CAPABLE
 777 #
 778 # 2.6.39 renames is_owner_or_cap to inode_owner_or_capable
 779 #
 780 AC_DEFUN([LC_HAVE_INODE_OWNER_OR_CAPABLE], [
 781 LB_CHECK_COMPILE([if 'inode_owner_or_capable' exist],
 782 inode_owner_or_capable, [
 783         #include <linux/fs.h>
 784 ],[
 785         inode_owner_or_capable(NULL);
 786 ],[
 787         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
 788                 [inode_owner_or_capable exist])
 789 ])
 790 ]) # LC_HAVE_INODE_OWNER_OR_CAPABLE
 791
 792 #
 793 # LC_DIRTY_INODE_WITH_FLAG
 794 #
 795 # 3.0 dirty_inode() has a flag parameter
 796 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 797 #
 798 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG], [
 799 LB_CHECK_COMPILE([if 'dirty_inode' super_operation takes flag],
 800 dirty_inode_super_operation_flag, [
 801         #include <linux/fs.h>
 802 ],[
 803         struct inode *inode;
 804         inode->i_sb->s_op->dirty_inode(NULL, 0);
 805 ],[
 806         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 807                 [dirty_inode super_operation takes flag])
 808 ])
 809 ]) # LC_DIRTY_INODE_WITH_FLAG
 810
 811 #
 812 # LC_SETNS
 813 #
 814 # 3.0 introduced setns
 815 #
 816 AC_DEFUN([LC_SETNS], [
 817 AC_CHECK_HEADERS([sched.h], [], [],
 818                  [#define _GNU_SOURCE
 819                  ])
 820 AC_CHECK_FUNCS([setns])
 821 ]) # LC_SETNS
 822
 823 #
 824 # LC_GENERIC_PERMISSION
 825 #
 826 # 2.6.38 generic_permission taken 4 parameters.
 827 # in fact, it means rcu-walk aware permission bring.
 828 #
 829 # 3.1 generic_permission taken 2 parameters.
 830 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 831 #
 832 AC_DEFUN([LC_GENERIC_PERMISSION], [
 833 LB_CHECK_COMPILE([if 'generic_permission' take 2 arguments],
 834 generic_permission_2args, [
 835         #include <linux/fs.h>
 836 ],[
 837         generic_permission(NULL, 0);
 838 ],[
 839         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 840                 [generic_permission taken 2 arguments])
 841 ],[
 842         LB_CHECK_COMPILE([if 'generic_permission' take 4 arguments],
 843         generic_permission_4args, [
 844                 #include <linux/fs.h>
 845         ],[
 846                 generic_permission(NULL, 0, 0, NULL);
 847         ],[
 848                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 849                         [generic_permission taken 4 arguments])
 850         ])
 851 ])
 852 ]) # LC_GENERIC_PERMISSION
 853
 854 #
 855 # LC_LM_XXX_LOCK_MANAGER_OPS
 856 #
 857 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 858 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 859 #
 860 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS], [
 861 LB_CHECK_COMPILE([if 'lock-manager' ops renamed to 'lm_xxx'],
 862 lock_manager_ops_lm_xxx, [
 863         #include <linux/fs.h>
 864 ],[
 865         struct lock_manager_operations lm_ops;
 866         lm_ops.lm_compare_owner = NULL;
 867 ],[
 868         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 869                 [lock-manager ops renamed to lm_xxx])
 870 ])
 871 ]) # LC_LM_XXX_LOCK_MANAGER_OPS
 872
 873 #
 874 # LC_INODE_DIO_WAIT
 875 #
 876 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait
 877 #     instead.
 878 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 879 #
 880 AC_DEFUN([LC_INODE_DIO_WAIT], [
 881 LB_CHECK_COMPILE([if 'inode->i_alloc_sem' is killed and use inode_dio_wait],
 882 inode_dio_wait, [
 883         #include <linux/fs.h>
 884 ],[
 885         inode_dio_wait((struct inode *)0);
 886 ],[
 887         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 888                 [inode->i_alloc_sem is killed and use inode_dio_wait])
 889 ])
 890 ]) # LC_INODE_DIO_WAIT
 891
 892 #
 893 # LC_IOP_GET_ACL
 894 #
 895 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 896 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 897 #
 898 AC_DEFUN([LC_IOP_GET_ACL], [
 899 LB_CHECK_COMPILE([if 'inode_operations' has '.get_acl' member function],
 900 inode_ops_get_acl, [
 901         #include <linux/fs.h>
 902 ],[
 903         struct inode_operations iop;
 904         iop.get_acl = NULL;
 905 ],[
 906         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 907                 [inode_operations has .get_acl member function])
 908 ])
 909 ]) # LC_IOP_GET_ACL
 910
 911 #
 912 # LC_FILE_LLSEEK_SIZE
 913 #
 914 # 3.1 introduced generic_file_llseek_size()
 915 #
 916 AC_DEFUN([LC_FILE_LLSEEK_SIZE], [
 917 LB_CHECK_EXPORT([generic_file_llseek_size], [fs/read_write.c],
 918         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 919                 [generic_file_llseek_size is exported by the kernel])])
 920 ]) # LC_FILE_LLSEEK_SIZE
 921
 922 #
 923 # LC_RADIX_EXCEPTION_ENTRY
 924 # 3.1 adds radix_tree_exception_entry.
 925 #
 926 AC_DEFUN([LC_RADIX_EXCEPTION_ENTRY], [
 927 LB_CHECK_COMPILE([radix_tree_exceptional_entry exist],
 928 radix_tree_exceptional_entry, [
 929         #include <linux/radix-tree.h>
 930 ],[
 931         radix_tree_exceptional_entry(NULL);
 932 ],[
 933         AC_DEFINE(HAVE_RADIX_EXCEPTION_ENTRY, 1,
 934                 [radix_tree_exceptional_entry exist])
 935 ])
 936 ]) # LC_RADIX_EXCEPTION_ENTRY
 937
 938 #
 939 # LC_HAVE_VOID_MAKE_REQUEST_FN
 940 #
 941 # 3.2 request_queue.make_request_fn defined as function returns with void
 942 # see kernel commit 5a7bbad27a410350e64a2d7f5ec18fc73836c14f
 943 #
 944 AC_DEFUN([LC_HAVE_VOID_MAKE_REQUEST_FN], [
 945 LB_CHECK_COMPILE([if 'request_queue.make_request_fn' returns void but not int],
 946 make_request_fn_void, [
 947         #include <linux/blkdev.h>
 948 ],[
 949         int ret;
 950         make_request_fn *mrf;
 951         ret = mrf(NULL, NULL);
 952 ],[],[
 953         AC_DEFINE(HAVE_VOID_MAKE_REQUEST_FN, 1,
 954                 [request_queue.make_request_fn returns void but not int])
 955 ])
 956 ]) # LC_HAVE_VOID_MAKE_REQUEST_FN
 957
 958 #
 959 # LC_HAVE_PROTECT_I_NLINK
 960 #
 961 # 3.2 protects inode->i_nlink from direct modification
 962 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 963 # at the same time adds set_nlink(), so checks set_nlink() for it.
 964 #
 965 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK], [
 966 LB_CHECK_COMPILE([if 'inode->i_nlink' is protected from direct modification],
 967 inode_i_nlink_protected, [
 968         #include <linux/fs.h>
 969 ],[
 970         struct inode i;
 971         set_nlink(&i, 1);
 972 ],[
 973         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 974                 [inode->i_nlink is protected from direct modification])
 975 ])
 976 ]) # LC_HAVE_PROTECT_I_NLINK
 977
 978 #
 979 # 2.6.39 security_inode_init_security takes a 'struct qstr' parameter
 980 #
 981 # 3.2 security_inode_init_security takes a callback to set xattrs
 982 #
 983 AC_DEFUN([LC_HAVE_SECURITY_IINITSEC], [
 984 LB_CHECK_COMPILE([if security_inode_init_security takes a callback],
 985 security_inode_init_security_callback, [
 986         #include <linux/security.h>
 987 ],[
 988         security_inode_init_security(NULL, NULL, NULL, (const initxattrs)NULL, NULL);
 989 ],[
 990         AC_DEFINE(HAVE_SECURITY_IINITSEC_CALLBACK, 1,
 991                   [security_inode_init_security takes a callback to set xattrs])
 992 ],[
 993         LB_CHECK_COMPILE([if security_inode_init_security takes a 'struct qstr' parameter],
 994         security_inode_init_security_qstr, [
 995                 #include <linux/security.h>
 996         ],[
 997                 security_inode_init_security(NULL, NULL, (struct qstr *)NULL, NULL, NULL, NULL);
 998         ],[
 999                 AC_DEFINE(HAVE_SECURITY_IINITSEC_QSTR, 1,
1000                           [security_inode_init_security takes a 'struct qstr' parameter])
1001         ])
1002 ])
1003 ]) # LC_HAVE_SECURITY_IINITSEC
1004
1005 #
1006 # LC_HAVE_MIGRATE_HEADER
1007 #
1008 # 3.3 introduces migrate_mode.h and migratepage has 4 args
1009 #
1010 AC_DEFUN([LC_HAVE_MIGRATE_HEADER], [
1011 LB_CHECK_FILE([$LINUX/include/linux/migrate.h], [
1012         AC_DEFINE(HAVE_MIGRATE_H, 1,
1013                 [kernel has include/linux/migrate.h])
1014 ],[
1015         LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h], [
1016                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
1017                         [kernel has include/linux/migrate_mode.h])
1018         ])
1019 ])
1020 ]) # LC_HAVE_MIGRATE_HEADER
1021
1022 #
1023 # LC_MIGRATEPAGE_4ARGS
1024 #
1025 AC_DEFUN([LC_MIGRATEPAGE_4ARGS], [
1026 LB_CHECK_COMPILE([if 'address_space_operations.migratepage' has 4 args],
1027 address_space_ops_migratepage_4args, [
1028         #include <linux/fs.h>
1029 #ifdef HAVE_MIGRATE_H
1030         #include <linux/migrate.h>
1031 #elif defined(HAVE_MIGRATE_MODE_H)
1032         #include <linux/migrate_mode.h>
1033 #endif
1034 ],[
1035         struct address_space_operations aops;
1036         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
1037 ],[
1038         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
1039                 [address_space_operations.migratepage has 4 args])
1040 ])
1041 ]) # LC_MIGRATEPAGE_4ARGS
1042
1043 #
1044 # LC_SUPEROPS_USE_DENTRY
1045 #
1046 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1047 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1048 #
1049 AC_DEFUN([LC_SUPEROPS_USE_DENTRY], [
1050 tmp_flags="$EXTRA_KCFLAGS"
1051 EXTRA_KCFLAGS="-Werror"
1052 LB_CHECK_COMPILE([if 'super_operations' use 'dentry' as parameter],
1053 super_ops_dentry, [
1054         #include <linux/fs.h>
1055         int show_options(struct seq_file *seq, struct dentry *root) {
1056                 return 0;
1057         }
1058 ],[
1059         struct super_operations ops;
1060         ops.show_options = show_options;
1061 ],[
1062         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1063                 [super_operations use dentry as parameter])
1064 ])
1065 EXTRA_KCFLAGS="$tmp_flags"
1066 ]) # LC_SUPEROPS_USE_DENTRY
1067
1068 #
1069 # LC_INODEOPS_USE_UMODE_T
1070 #
1071 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1072 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1073 #
1074 AC_DEFUN([LC_INODEOPS_USE_UMODE_T], [
1075 tmp_flags="$EXTRA_KCFLAGS"
1076 EXTRA_KCFLAGS="-Werror"
1077 LB_CHECK_COMPILE([if 'inode_operations' use 'umode_t' as parameter],
1078 inode_ops_umode_t, [
1079         #include <linux/fs.h>
1080         #include <linux/types.h>
1081         int my_mknod(struct inode *dir, struct dentry *dchild,
1082                      umode_t mode, dev_t dev)
1083         {
1084                 return 0;
1085         }
1086 ],[
1087         struct inode_operations ops;
1088         ops.mknod = my_mknod;
1089 ],[
1090         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1091                 [inode_operations use umode_t as parameter])
1092 ])
1093 EXTRA_KCFLAGS="$tmp_flags"
1094 ]) # LC_INODEOPS_USE_UMODE_T
1095
1096 #
1097 # LC_KMAP_ATOMIC_HAS_1ARG
1098 #
1099 # 3.4 kmap_atomic removes second argument
1100 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1101 #
1102 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG], [
1103 LB_CHECK_COMPILE([if 'kmap_atomic' has only 1 argument],
1104 kmap_atomic_1arg, [
1105         #include <linux/highmem.h>
1106 ],[
1107         kmap_atomic(NULL);
1108 ],[
1109         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1110                 [have kmap_atomic has only 1 argument])
1111 ])
1112 ]) # LC_KMAP_ATOMIC_HAS_1ARG
1113
1114 #
1115 # LC_HAVE_D_MAKE_ROOT
1116 #
1117 # 3.4 converts d_alloc_root to d_make_root
1118 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1119 #
1120 AC_DEFUN([LC_HAVE_D_MAKE_ROOT], [
1121 LB_CHECK_COMPILE([if have 'd_make_root'],
1122 d_make_root, [
1123         #include <linux/fs.h>
1124 ],[
1125         d_make_root((struct inode *)NULL);
1126 ],[
1127         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1128                 [have d_make_root])
1129 ])
1130 ]) # LC_HAVE_D_MAKE_ROOT
1131
1132 #
1133 # LC_HAVE_CACHE_REGISTER
1134 #
1135 # 3.4 cache_register/cache_unregister are removed
1136 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1137 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1138 # are defined, but not exported.
1139 # 3.3 cache_register_net/cache_unregister_net are
1140 # exported and replacing cache_register/cache_unregister in 3.4
1141 #
1142 AC_DEFUN([LC_HAVE_CACHE_REGISTER], [
1143 LB_CHECK_COMPILE([if have 'cache_register'],
1144 cache_register, [
1145         #include <linux/sunrpc/cache.h>
1146 ],[
1147         cache_register(NULL);
1148 ],[
1149         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1150                 [have cache_register])
1151 ])
1152 ]) # LC_HAVE_CACHE_REGISTER
1153
1154 #
1155 # LC_HAVE_CLEAR_INODE
1156 #
1157 # 3.5 renames end_writeback() back to clear_inode()...
1158 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1159 #
1160 AC_DEFUN([LC_HAVE_CLEAR_INODE], [
1161 LB_CHECK_COMPILE([if have 'clear_inode'],
1162 clear_inode, [
1163         #include <linux/fs.h>
1164 ],[
1165         clear_inode((struct inode *)NULL);
1166 ],[
1167         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1168                 [have clear_inode])
1169 ])
1170 ]) # LC_HAVE_CLEAR_INODE
1171
1172 #
1173 # LC_HAVE_ENCODE_FH_PARENT
1174 #
1175 # 3.5 encode_fh has parent inode passed in directly
1176 # see kernel commit b0b0382b
1177 #
1178 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT], [
1179 tmp_flags="$EXTRA_KCFLAGS"
1180 EXTRA_KCFLAGS="-Werror"
1181 LB_CHECK_COMPILE([if 'encode_fh' have parent inode as parameter],
1182 encode_fh_parent_inode, [
1183         #include <linux/exportfs.h>
1184         #include <linux/fs.h>
1185         #include <linux/types.h>
1186         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1187         {
1188                 return 0;
1189         }
1190 ],[
1191         struct export_operations exp_op;
1192         exp_op.encode_fh = ll_encode_fh;
1193 ],[
1194         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1195                 [have parent inode as parameter])
1196 ])
1197 EXTRA_KCFLAGS="$tmp_flags"
1198 ]) # LC_HAVE_ENCODE_FH_PARENT
1199
1200 #
1201 # LC_FILE_LLSEEK_SIZE_5ARG
1202 #
1203 # 3.5 has generic_file_llseek_size with 5 args
1204 #
1205 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG], [
1206 LB_CHECK_COMPILE([if Linux kernel has 'generic_file_llseek_size' with 5 args],
1207 generic_file_llseek_size_5args, [
1208         #include <linux/fs.h>
1209 ],[
1210         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1211 ], [
1212         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1213                 [kernel has generic_file_llseek_size with 5 args])
1214 ])
1215 ]) # LC_FILE_LLSEEK_SIZE_5ARG
1216
1217 #
1218 # LC_LLITE_DATA_IS_LIST
1219 #
1220 # 3.6 switch i_dentry/d_alias from list to hlist
1221 #
1222 # In the upstream kernels d_alias first changes
1223 # to a hlist and then in later version, 3.11, gets
1224 # moved to the union d_u. Due to some distros having
1225 # d_alias in the d_u union as a struct list, which
1226 # has never existed upstream stream, we can't test
1227 # if d_alias is a list or hlist directly. If ever
1228 # i_dentry and d_alias even up different combos then
1229 # the build will fail. In that case then we will need
1230 # to separate out the i_dentry and d_alias test below.
1231 #
1232 AC_DEFUN([LC_DATA_FOR_LLITE_IS_LIST], [
1233 tmp_flags="$EXTRA_KCFLAGS"
1234 EXTRA_KCFLAGS="-Werror"
1235 LB_CHECK_COMPILE([if 'i_dentry/d_alias' uses 'list'],
1236 i_dentry_d_alias_list, [
1237         #include <linux/fs.h>
1238 ],[
1239         struct inode inode;
1240         INIT_LIST_HEAD(&inode.i_dentry);
1241 ],[
1242         AC_DEFINE(DATA_FOR_LLITE_IS_LIST, 1,
1243                 [both i_dentry/d_alias uses list])
1244 ])
1245 EXTRA_KCFLAGS="$tmp_flags"
1246 ]) # LC_DATA_FOR_LLITE_IS_LIST
1247
1248 #
1249 # LC_DENTRY_OPEN_USE_PATH
1250 #
1251 # 3.6 dentry_open uses struct path as first argument
1252 # see kernel commit 765927b2
1253 #
1254 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH], [
1255 tmp_flags="$EXTRA_KCFLAGS"
1256 EXTRA_KCFLAGS="-Werror"
1257 LB_CHECK_COMPILE([if 'dentry_open' uses 'struct path' as first argument],
1258 dentry_open_path, [
1259         #include <linux/fs.h>
1260         #include <linux/path.h>
1261 ],[
1262         struct path path;
1263         dentry_open(&path, 0, NULL);
1264 ],[
1265         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1266                 [dentry_open uses struct path as first argument])
1267 ])
1268 EXTRA_KCFLAGS="$tmp_flags"
1269 ]) # LC_DENTRY_OPEN_USE_PATH
1270
1271 #
1272 # LC_HAVE_IOP_ATOMIC_OPEN
1273 #
1274 # 3.6 vfs adds iop->atomic_open
1275 #
1276 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN], [
1277 LB_CHECK_COMPILE([if 'iop' has 'atomic_open'],
1278 inode_ops_atomic_open, [
1279         #include <linux/fs.h>
1280 ],[
1281         struct inode_operations iop;
1282         iop.atomic_open = NULL;
1283 ],[
1284         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1285                 [have iop atomic_open])
1286 ])
1287 ]) # LC_HAVE_IOP_ATOMIC_OPEN
1288
1289 #
1290 # LC_HAVE_SB_START_WRITE
1291 #
1292 # RHEL6 2.6.32, 3.6 or newer support wrapped FS freeze functions
1293 #
1294 AC_DEFUN([LC_HAVE_SB_START_WRITE], [
1295 LB_CHECK_COMPILE([if kernel supports wrapped FS freeze functions],
1296 sb_start_write, [
1297         #include <linux/fs.h>
1298 ],[
1299         sb_start_write(NULL);
1300 ],[
1301         AC_DEFINE(HAVE_SB_START_WRITE, 1,
1302                 [kernel supports wrapped FS freeze functions])
1303 ])
1304 ]) # LC_HAVE_SB_START_WRITE
1305
1306 #
1307 # LC_HAVE_POSIXACL_USER_NS
1308 #
1309 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1310 #
1311 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS], [
1312 LB_CHECK_COMPILE([if 'posix_acl_to_xattr' takes 'struct user_namespace'],
1313 posix_acl_to_xattr_user_namespace, [
1314         #include <linux/fs.h>
1315         #include <linux/posix_acl_xattr.h>
1316 ],[
1317         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1318 ],[
1319         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1320                 [posix_acl_to_xattr takes struct user_namespace])
1321 ])
1322 ]) # LC_HAVE_POSIXACL_USER_NS
1323
1324 #
1325 # LC_HAVE_FILE_F_INODE
1326 #
1327 # 3.8 struct file has new member f_inode
1328 #
1329 AC_DEFUN([LC_HAVE_FILE_F_INODE], [
1330 LB_CHECK_COMPILE([if 'struct file' has member 'f_inode'],
1331 file_f_inode, [
1332         #include <linux/fs.h>
1333 ],[
1334         ((struct file *)0)->f_inode = NULL;
1335 ],[
1336         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1337                 [struct file has member f_inode])
1338 ])
1339 ]) # LC_HAVE_FILE_F_INODE
1340
1341 #
1342 # LC_HAVE_FILE_INODE
1343 #
1344 # 3.8 has introduced inline function file_inode
1345 #
1346 AC_DEFUN([LC_HAVE_FILE_INODE], [
1347 LB_CHECK_COMPILE([if file_inode() exists],
1348 file_inode, [
1349         #include <linux/fs.h>
1350 ],[
1351         file_inode(NULL);
1352 ],[
1353         AC_DEFINE(HAVE_FILE_INODE, 1,
1354                 [file_inode() has been defined])
1355 ])
1356 ]) # LC_HAVE_FILE_INODE
1357
1358 #
1359 # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1360 #
1361 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS], [
1362 LB_CHECK_COMPILE([if 'sunrpc_cache_pipe_upcall' takes 3 args],
1363 sunrpc_cache_pipe_upcall_3args, [
1364         #include <linux/sunrpc/cache.h>
1365 ],[
1366         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1367 ],[
1368         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1369                 [sunrpc_cache_pipe_upcall takes 3 args])
1370 ])
1371 ]) # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1372
1373 #
1374 # LC_HAVE_HLIST_FOR_EACH_3ARG
1375 #
1376 # 3.9 uses hlist_for_each_entry with 3 args
1377 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1378 #
1379 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG], [
1380 LB_CHECK_COMPILE([if 'hlist_for_each_entry' has 3 args],
1381 hlist_for_each_entry_3args, [
1382         #include <linux/list.h>
1383         #include <linux/fs.h>
1384 ],[
1385         struct hlist_head *head = NULL;
1386         struct inode *inode;
1387
1388         hlist_for_each_entry(inode, head, i_hash) {
1389                 continue;
1390         }
1391 ],[
1392         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1,
1393                 [hlist_for_each_entry has 3 args])
1394 ])
1395 ]) # LC_HAVE_HLIST_FOR_EACH_3ARG
1396
1397 #
1398 # LC_HAVE_BIO_END_SECTOR
1399 #
1400 # 3.9 introduces bio_end_sector macro
1401 # f73a1c7d117d07a96d89475066188a2b79e53c48
1402 #
1403 AC_DEFUN([LC_HAVE_BIO_END_SECTOR], [
1404 LB_CHECK_COMPILE([if 'bio_end_sector' is defined],
1405 bio_end_sector, [
1406         #include <linux/bio.h>
1407 ],[
1408         struct bio bio;
1409
1410         bio_end_sector(&bio);
1411 ],[
1412         AC_DEFINE(HAVE_BIO_END_SECTOR, 1,
1413                   [bio_end_sector is defined])
1414 ])
1415 ]) # LC_HAVE_BIO_END_SECTOR
1416
1417 #
1418 # 3.9 created is_sxid
1419 #
1420 AC_DEFUN([LC_HAVE_IS_SXID], [
1421 LB_CHECK_COMPILE([if 'is_sxid' is defined],
1422 is_sxid, [
1423         #include <linux/fs.h>
1424 ],[
1425         struct inode inode;
1426
1427         is_sxid(inode.i_mode);
1428 ],[
1429         AC_DEFINE(HAVE_IS_SXID, 1, [is_sxid is defined])
1430 ])
1431 ]) # LC_HAVE_IS_SXID
1432
1433 #
1434 # LC_HAVE_REMOVE_PROC_SUBTREE
1435 #
1436 # 3.10 introduced remove_proc_subtree
1437 #
1438 AC_DEFUN([LC_HAVE_REMOVE_PROC_SUBTREE], [
1439 LB_CHECK_COMPILE([if 'remove_proc_subtree' is defined],
1440 remove_proc_subtree, [
1441         #include <linux/proc_fs.h>
1442 ],[
1443         remove_proc_subtree(NULL, NULL);
1444 ], [
1445         AC_DEFINE(HAVE_REMOVE_PROC_SUBTREE, 1,
1446                   [remove_proc_subtree is defined])
1447 ])
1448 ]) # LC_HAVE_REMOVE_PROC_SUBTREE
1449
1450 #
1451 # LC_HAVE_PROC_REMOVE
1452 #
1453 # 3.10 introduced proc_remove
1454 #
1455 AC_DEFUN([LC_HAVE_PROC_REMOVE], [
1456 LB_CHECK_COMPILE([if 'proc_remove' is defined],
1457 proc_remove, [
1458         #include <linux/proc_fs.h>
1459 ],[
1460         proc_remove(NULL);
1461 ], [
1462         AC_DEFINE(HAVE_PROC_REMOVE, 1,
1463                   [proc_remove is defined])
1464 ])
1465 ]) # LC_HAVE_PROC_REMOVE
1466
1467 #
1468 # LC_BLKDEV_RELEASE_RETURN_INT
1469 #
1470 # 3.10 release for block device doesn't return int
1471 #
1472 AC_DEFUN([LC_BLKDEV_RELEASE_RETURN_INT], [
1473 LB_CHECK_COMPILE([if 'block_device_operations' release returns 'int'],
1474 block_device_ops_release_return_int, [
1475         #include <linux/blkdev.h>
1476 ],[
1477         struct block_device_operations fops;
1478         int i __attribute__ ((unused));
1479
1480         i = fops.release(NULL, 0);
1481 ],[
1482         AC_DEFINE(HAVE_BLKDEV_RELEASE_RETURN_INT, 1,
1483                 [block device release returns int])
1484 ])
1485 ]) # LC_BLKDEV_RELEASE_RETURN_INT
1486
1487 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
1488 LB_CHECK_COMPILE([if get_projid exists],
1489 get_projid, [
1490         #include <linux/quota.h>
1491 ],[
1492         struct dquot_operations ops;
1493
1494         ops.get_projid(NULL, NULL);
1495 ],[
1496         AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
1497                 [get_projid function exists])
1498 ])
1499 ]) # LC_HAVE_PROJECT_QUOTA
1500
1501
1502 #
1503 # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1504 #
1505 # 3.10 introduced security_dentry_init_security()
1506 #
1507 AC_DEFUN([LC_HAVE_SECURITY_DENTRY_INIT_SECURITY], [
1508 LB_CHECK_COMPILE([if 'security_dentry_init_security' is defined],
1509 security_dentry_init_security, [
1510         #include <linux/security.h>
1511 ],[
1512         security_dentry_init_security(NULL, 0, NULL, NULL, NULL);
1513 ],[
1514         AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_SECURITY, 1,
1515                 [security_dentry_init_security' is defined])
1516 ])
1517 ]) # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1518
1519 #
1520 # LC_INVALIDATE_RANGE
1521 #
1522 # 3.11 invalidatepage requires the length of the range to invalidate
1523 #
1524 AC_DEFUN([LC_INVALIDATE_RANGE], [
1525 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
1526 address_space_ops_invalidatepage_3args, [
1527         #include <linux/fs.h>
1528 ],[
1529         struct address_space_operations a_ops;
1530         a_ops.invalidatepage(NULL, 0, 0);
1531 ],[
1532         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
1533                 [address_space_operations.invalidatepage needs 3 arguments])
1534 ])
1535 ]) # LC_INVALIDATE_RANGE
1536
1537 #
1538 # LC_HAVE_DIR_CONTEXT
1539 #
1540 # 3.11 readdir now takes the new struct dir_context
1541 #
1542 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
1543 LB_CHECK_COMPILE([if 'dir_context' exist],
1544 dir_context, [
1545         #include <linux/fs.h>
1546 ],[
1547         struct dir_context ctx;
1548         ctx.pos = 0;
1549 ],[
1550         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
1551                 [dir_context exist])
1552 ])
1553 ]) # LC_HAVE_DIR_CONTEXT
1554
1555 #
1556 # LC_D_COMPARE_5ARGS
1557 #
1558 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1559 #
1560 AC_DEFUN([LC_D_COMPARE_5ARGS], [
1561 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
1562 d_compare_5args, [
1563         #include <linux/dcache.h>
1564 ],[
1565         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1566 ],[
1567         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1568                 [d_compare need 5 arguments])
1569 ])
1570 ]) # LC_D_COMPARE_5ARGS
1571
1572 #
1573 # LC_HAVE_DCOUNT
1574 #
1575 # 3.11 need to access d_count to get dentry reference count
1576 #
1577 AC_DEFUN([LC_HAVE_DCOUNT], [
1578 LB_CHECK_COMPILE([if 'd_count' exist],
1579 d_count, [
1580         #include <linux/dcache.h>
1581 ],[
1582         struct dentry de;
1583         d_count(&de);
1584 ],[
1585         AC_DEFINE(HAVE_D_COUNT, 1,
1586                 [d_count exist])
1587 ])
1588 ]) # LC_HAVE_DCOUNT
1589
1590 #
1591 # LC_PID_NS_FOR_CHILDREN
1592 #
1593 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
1594 #
1595 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
1596 LB_CHECK_COMPILE([if 'struct nsproxy' has 'pid_ns_for_children'],
1597 pid_ns_for_children, [
1598         #include <linux/nsproxy.h>
1599 ],[
1600         struct nsproxy ns;
1601         ns.pid_ns_for_children = NULL;
1602 ],[
1603         AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
1604                   ['struct nsproxy' has 'pid_ns_for_children'])
1605 ])
1606 ]) # LC_PID_NS_FOR_CHILDREN
1607
1608 #
1609 # LC_OLDSIZE_TRUNCATE_PAGECACHE
1610 #
1611 # 3.12 truncate_pagecache without oldsize parameter
1612 #
1613 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
1614 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
1615 truncate_pagecache_old_size, [
1616         #include <linux/mm.h>
1617 ],[
1618         truncate_pagecache(NULL, 0, 0);
1619 ],[
1620         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
1621                 [with oldsize])
1622 ])
1623 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
1624
1625 #
1626 # LC_HAVE_DENTRY_D_U_D_ALIAS
1627 #
1628 # 3.11 kernel moved d_alias to the union d_u in struct dentry
1629 #
1630 # Some distros move d_alias to d_u but it is still a struct list
1631 #
1632 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
1633 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
1634         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
1635         d_alias, [
1636                 #include <linux/list.h>
1637                 #include <linux/dcache.h>
1638         ],[
1639                 struct dentry de;
1640                 INIT_LIST_HEAD(&de.d_u.d_alias);
1641         ],[
1642                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1643                         [list dentry.d_u.d_alias exist])
1644         ])
1645 ],[
1646         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
1647         d_alias, [
1648                 #include <linux/list.h>
1649                 #include <linux/dcache.h>
1650         ],[
1651                 struct dentry de;
1652                 INIT_HLIST_NODE(&de.d_u.d_alias);
1653         ],[
1654                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1655                         [hlist dentry.d_u.d_alias exist])
1656         ])
1657 ])
1658 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
1659
1660 #
1661 # LC_HAVE_DENTRY_D_CHILD
1662 #
1663 # 3.11 kernel d_child has been moved out of the union d_u
1664 # in struct dentry
1665 #
1666 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
1667 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
1668 d_child, [
1669         #include <linux/list.h>
1670         #include <linux/dcache.h>
1671 ],[
1672         struct dentry de;
1673         INIT_LIST_HEAD(&de.d_child);
1674 ],[
1675         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
1676                 [dentry.d_child exist])
1677 ])
1678 ]) # LC_HAVE_DENTRY_D_CHILD
1679
1680 #
1681 # LC_KIOCB_KI_LEFT
1682 #
1683 # 3.12 ki_left removed from struct kiocb
1684 #
1685 AC_DEFUN([LC_KIOCB_KI_LEFT], [
1686 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
1687 kiocb_ki_left, [
1688         #include <linux/aio.h>
1689 ],[
1690         ((struct kiocb*)0)->ki_left = 0;
1691 ],[
1692         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
1693                 [ki_left exist])
1694 ])
1695 ]) # LC_KIOCB_KI_LEFT
1696
1697 #
1698 # LC_VFS_RENAME_5ARGS
1699 #
1700 # 3.13 has vfs_rename with 5 args
1701 #
1702 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
1703 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
1704 vfs_rename_5args, [
1705         #include <linux/fs.h>
1706 ],[
1707         vfs_rename(NULL, NULL, NULL, NULL, NULL);
1708 ], [
1709         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
1710                 [kernel has vfs_rename with 5 args])
1711 ])
1712 ]) # LC_VFS_RENAME_5ARGS
1713
1714 #
1715 # LC_VFS_UNLINK_3ARGS
1716 #
1717 # 3.13 has vfs_unlink with 3 args
1718 #
1719 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
1720 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
1721 vfs_unlink_3args, [
1722         #include <linux/fs.h>
1723 ],[
1724         vfs_unlink(NULL, NULL, NULL);
1725 ], [
1726         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
1727                 [kernel has vfs_unlink with 3 args])
1728 ])
1729 ]) # LC_VFS_UNLINK_3ARGS
1730
1731 #
1732 # LC_HAVE_BVEC_ITER
1733 #
1734 # 3.14 move some of its data in struct bio into the new
1735 # struct bvec_iter
1736 #
1737 AC_DEFUN([LC_HAVE_BVEC_ITER], [
1738 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
1739 have_bvec_iter, [
1740         #include <linux/bio.h>
1741 ],[
1742         struct bvec_iter iter;
1743         iter.bi_bvec_done = 0;
1744 ], [
1745         AC_DEFINE(HAVE_BVEC_ITER, 1,
1746                 [kernel has struct bvec_iter])
1747 ])
1748 ]) # LC_HAVE_BVEC_ITER
1749
1750 #
1751 # LC_HAVE_BI_CNT
1752 #
1753 # 4.4 redefined bi_cnt as __bi_cnt
1754 #
1755 AC_DEFUN([LC_HAVE_BI_CNT], [
1756 LB_CHECK_COMPILE([if Linux kernel has bi_cnt in struct bio],
1757 have_bi_cnt, [
1758         #include <asm/atomic.h>
1759         #include <linux/bio.h>
1760 ],[
1761         struct bio bio;
1762         int cnt;
1763         cnt = atomic_read(&bio.bi_cnt);
1764 ], [
1765         AC_DEFINE(HAVE_BI_CNT, 1,
1766                 [struct bio has bi_cnt])
1767 ])
1768 ]) # LC_HAVE_BI_CNT
1769
1770 #
1771 # LC_HAVE_TRUNCATE_IPAGE_FINAL
1772 #
1773 # 3.14 bring truncate_inode_pages_final for evict_inode
1774 #
1775 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
1776 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
1777 truncate_ipages_final, [
1778         #include <linux/mm.h>
1779 ],[
1780         truncate_inode_pages_final(NULL);
1781 ], [
1782         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
1783                 [kernel has truncate_inode_pages_final])
1784 ])
1785 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
1786
1787 #
1788 # LC_VFS_RENAME_6ARGS
1789 #
1790 # 3.15 has vfs_rename with 6 args
1791 #
1792 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
1793 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
1794 vfs_rename_6args, [
1795         #include <linux/fs.h>
1796 ],[
1797         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
1798 ], [
1799         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
1800                 [kernel has vfs_rename with 6 args])
1801 ])
1802 ]) # LC_VFS_RENAME_6ARGS
1803
1804 #
1805 # LC_DIRECTIO_USE_ITER
1806 #
1807 # 3.16 kernel changes direct IO to use iov_iter
1808 #
1809 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
1810 LB_CHECK_COMPILE([if direct IO uses iov_iter],
1811 direct_io_iter, [
1812         #include <linux/fs.h>
1813 ],[
1814         struct address_space_operations ops;
1815         struct iov_iter *iter = NULL;
1816         loff_t offset = 0;
1817
1818         ops.direct_IO(0, NULL, iter, offset);
1819 ],[
1820         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
1821                 [direct IO uses iov_iter])
1822 ])
1823 ]) # LC_DIRECTIO_USE_ITER
1824
1825 #
1826 # LC_HAVE_IOV_ITER_INIT_DIRECTION
1827 #
1828 #
1829 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
1830 #      changed iov_iter_init api to start accepting a tag
1831 #      that defines if its a read or write operation
1832 #
1833 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
1834 tmp_flags="$EXTRA_KCFLAGS"
1835 EXTRA_KCFLAGS="-Werror"
1836 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
1837 iter_init, [
1838         #include <linux/uio.h>
1839         #include <linux/fs.h>
1840 ],[
1841         const struct iovec *iov = NULL;
1842
1843         iov_iter_init(NULL, READ, iov, 1, 0);
1844 ],[
1845         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
1846                 [iov_iter_init handles directional tag])
1847 ])
1848 EXTRA_KCFLAGS="$tmp_flags"
1849 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
1850
1851 #
1852 # LC_HAVE_IOV_ITER_TRUNCATE
1853 #
1854 #
1855 # 3.16 introduces a new API iov_iter_truncate()
1856 #
1857 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
1858 tmp_flags="$EXTRA_KCFLAGS"
1859 EXTRA_KCFLAGS="-Werror"
1860 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
1861 iter_truncate, [
1862         #include <linux/uio.h>
1863         #include <linux/fs.h>
1864 ],[
1865         struct iov_iter *i = NULL;
1866
1867         iov_iter_truncate(i, 0);
1868 ],[
1869         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
1870 ])
1871 EXTRA_KCFLAGS="$tmp_flags"
1872 ]) # LC_HAVE_IOV_ITER_TRUNCATE
1873
1874 #
1875 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1876 #
1877 # 3.16 introduces [read|write]_iter to struct file_operations
1878 #
1879 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1880 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
1881 file_function_iter, [
1882         #include <linux/fs.h>
1883 ],[
1884         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
1885         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
1886 ],[
1887         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
1888                 [file_operations.[read|write]_iter functions exist])
1889 ])
1890 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1891
1892 #
1893 # LC_KEY_MATCH_DATA
1894 #
1895 # 3.17  replaces key_type::match with match_preparse
1896 #       and has new struct key_match_data
1897 #
1898 AC_DEFUN([LC_KEY_MATCH_DATA], [
1899 LB_CHECK_COMPILE([if struct key_match field exist],
1900 key_match, [
1901         #include <linux/key-type.h>
1902 ],[
1903         struct key_match_data data;
1904 ],[
1905         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
1906                 [struct key_match_data exist])
1907 ])
1908 ]) # LC_KEY_MATCH_DATA
1909
1910 #
1911 # LC_NFS_FILLDIR_USE_CTX
1912 #
1913 # 3.18 kernel moved from void cookie to struct dir_context
1914 #
1915 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
1916 tmp_flags="$EXTRA_KCFLAGS"
1917 EXTRA_KCFLAGS="-Werror"
1918 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
1919 filldir_ctx, [
1920         #include <linux/fs.h>
1921 ],[
1922         int filldir(struct dir_context *ctx, const char* name,
1923                     int i, loff_t off, u64 tmp, unsigned temp)
1924         {
1925                 return 0;
1926         }
1927
1928         struct dir_context ctx = {
1929                 .actor = filldir,
1930         };
1931
1932         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
1933 ],[
1934         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
1935                 [filldir_t needs struct dir_context as argument])
1936 ])
1937 EXTRA_KCFLAGS="$tmp_flags"
1938 ]) # LC_NFS_FILLDIR_USE_CTX
1939
1940 #
1941 # LC_PERCPU_COUNTER_INIT
1942 #
1943 # 3.18  For kernels 3.18 and after percpu_counter_init starts
1944 #       to pass a GFP_* memory allocation flag for internal
1945 #       memory allocation purposes.
1946 #
1947 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
1948 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
1949 percpu_counter_init, [
1950         #include <linux/percpu_counter.h>
1951 ],[
1952         percpu_counter_init(NULL, 0, GFP_KERNEL);
1953 ],[
1954         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
1955                 [percpu_counter_init uses GFP_* flag])
1956 ])
1957 ]) # LC_PERCPU_COUNTER_INIT
1958
1959 #
1960 # LC_KIOCB_HAS_NBYTES
1961 #
1962 # 3.19 kernel removed ki_nbytes from struct kiocb
1963 #
1964 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
1965 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
1966 ki_nbytes, [
1967         #include <linux/fs.h>
1968 ],[
1969         struct kiocb iocb;
1970
1971         iocb.ki_nbytes = 0;
1972 ],[
1973         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
1974 ])
1975 ]) # LC_KIOCB_HAS_NBYTES
1976
1977 #
1978 # LC_HAVE_DQUOT_QC_DQBLK
1979 #
1980 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
1981 # Added in commit 14bf61ffe
1982 #
1983 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
1984 tmp_flags="$EXTRA_KCFLAGS"
1985 EXTRA_KCFLAGS="-Werror"
1986 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk],
1987 qc_dqblk, [
1988         #include <linux/fs.h>
1989         #include <linux/quota.h>
1990 ],[
1991         ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
1992 ],[
1993         AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
1994                 [quotactl_ops.set_dqblk takes struct qc_dqblk])
1995         AC_DEFINE(HAVE_DQUOT_KQID, 1,
1996                 [quotactl_ops.set_dqblk takes struct kqid])
1997 ])
1998 EXTRA_KCFLAGS="$tmp_flags"
1999 ]) # LC_HAVE_DQUOT_QC_DQBLK
2000
2001 #
2002 # LC_BACKING_DEV_INFO_REMOVAL
2003 #
2004 # 3.20 kernel removed backing_dev_info from address_space
2005 #
2006 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
2007 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
2008 backing_dev_info, [
2009         #include <linux/fs.h>
2010 ],[
2011         struct address_space mapping;
2012
2013         mapping.backing_dev_info = NULL;
2014 ],[
2015         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
2016 ])
2017 ]) # LC_BACKING_DEV_INFO_REMOVAL
2018
2019 #
2020 # LC_HAVE_BDI_CAP_MAP_COPY
2021 #
2022 # 3.20  removed mmap handling for backing devices since
2023 #       it breaks on non-MMU systems. See kernel commit
2024 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
2025 #
2026 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
2027 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
2028 bdi_cap_map_copy, [
2029         #include <linux/backing-dev.h>
2030 ],[
2031         struct backing_dev_info info;
2032
2033         info.capabilities = BDI_CAP_MAP_COPY;
2034 ],[
2035         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
2036                 [BDI_CAP_MAP_COPY exist])
2037 ])
2038 ]) # LC_HAVE_BDI_CAP_MAP_COPY
2039
2040 #
2041 # LC_CANCEL_DIRTY_PAGE
2042 #
2043 # 4.0.0 kernel removed cancel_dirty_page
2044 #
2045 AC_DEFUN([LC_CANCEL_DIRTY_PAGE], [
2046 LB_CHECK_COMPILE([if cancel_dirty_page still exist],
2047 cancel_dirty_page, [
2048         #include <linux/mm.h>
2049 ],[
2050         cancel_dirty_page(NULL, PAGE_SIZE);
2051 ],[
2052         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
2053                 [cancel_dirty_page is still available])
2054 ])
2055 ]) # LC_CANCEL_DIRTY_PAGE
2056
2057 #
2058 # LC_IOV_ITER_RW
2059 #
2060 # 4.1 kernel has iov_iter_rw
2061 #
2062 AC_DEFUN([LC_IOV_ITER_RW], [
2063 LB_CHECK_COMPILE([if iov_iter_rw exist],
2064 iov_iter_rw, [
2065         #include <linux/fs.h>
2066         #include <linux/uio.h>
2067 ],[
2068         struct iov_iter *iter = NULL;
2069
2070         iov_iter_rw(iter);
2071 ],[
2072         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
2073                 [iov_iter_rw exist])
2074 ])
2075 ]) # LC_IOV_ITER_RW
2076
2077 #
2078 # LC_HAVE_SYNC_READ_WRITE
2079 #
2080 # 4.1 new_sync_[read|write] no longer exported
2081 #
2082 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
2083 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
2084         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
2085                         [new_sync_[read|write] is exported by the kernel])])
2086 ]) # LC_HAVE_SYNC_READ_WRITE
2087
2088 #
2089 # LC_NEW_CANCEL_DIRTY_PAGE
2090 #
2091 # 4.2 kernel has new cancel_dirty_page
2092 #
2093 AC_DEFUN([LC_NEW_CANCEL_DIRTY_PAGE], [
2094 LB_CHECK_COMPILE([if cancel_dirty_page with one argument exist],
2095 new_cancel_dirty_page, [
2096         #include <linux/mm.h>
2097 ],[
2098         cancel_dirty_page(NULL);
2099 ],[
2100         AC_DEFINE(HAVE_NEW_CANCEL_DIRTY_PAGE, 1,
2101                 [cancel_dirty_page with one arguement is available])
2102 ])
2103 ]) # LC_NEW_CANCEL_DIRTY_PAGE
2104
2105 #
2106 # LC_SYMLINK_OPS_USE_NAMEIDATA
2107 #
2108 # For the 4.2+ kernels the file system internal symlink api no
2109 # longer uses struct nameidata as a argument
2110 #
2111 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
2112 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
2113 symlink_use_nameidata, [
2114         #include <linux/namei.h>
2115         #include <linux/fs.h>
2116 ],[
2117         struct nameidata *nd = NULL;
2118
2119         ((struct inode_operations *)0)->follow_link(NULL, nd);
2120         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
2121 ],[
2122         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
2123                 [symlink inode operations need struct nameidata argument])
2124 ])
2125 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
2126
2127 #
2128 # LC_BIO_ENDIO_USES_ONE_ARG
2129 #
2130 # 4.2 kernel bio_endio now only takes one argument
2131 #
2132 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
2133 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
2134 bio_endio, [
2135         #include <linux/bio.h>
2136 ],[
2137         bio_endio(NULL);
2138 ],[
2139         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
2140                 [bio_endio takes only one argument])
2141 ])
2142 ]) # LC_BIO_ENDIO_USES_ONE_ARG
2143
2144 #
2145 # LC_HAVE_LOOP_CTL_GET_FREE
2146 #
2147 # 4.x kernel have moved userspace APIs to
2148 # the separate directory and all of them
2149 # support LOOP_CTL_GET_FREE
2150 #
2151 AC_DEFUN([LC_HAVE_LOOP_CTL_GET_FREE], [
2152 LB_CHECK_FILE([$LINUX/include/linux/loop.h], [
2153         LB_CHECK_COMPILE([if have 'HAVE_LOOP_CTL_GET_FREE'],
2154         LOOP_CTL_GET_FREE, [
2155                 #include <linux/loop.h>
2156         ],[
2157                 int i;
2158
2159                 i = LOOP_CTL_GET_FREE;
2160         ],[
2161                 AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2162                         [LOOP_CTL_GET_FREE exist])
2163         ])
2164 ],[
2165         AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2166                 [kernel has LOOP_CTL_GET_FREE])
2167 ])
2168 ]) # LC_HAVE_LOOP_CTL_GET_FREE
2169
2170 #
2171 # LC_HAVE_CACHE_HEAD_HLIST
2172 #
2173 # 4.3 kernel swiched to hlist for cache_head
2174 #
2175 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
2176 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
2177 cache_head_has_hlist, [
2178         #include <linux/sunrpc/cache.h>
2179 ],[
2180         do {} while(sizeof(((struct cache_head *)0)->cache_list));
2181 ],[
2182         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
2183                 [cache_head has hlist cache_list])
2184 ])
2185 ]) # LC_HAVE_CACHE_HEAD_HLIST
2186
2187 #
2188 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2189 #
2190 # 4.4 kernel have moved locks API users to
2191 # locks_lock_inode_wait()
2192 #
2193 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
2194 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
2195 locks_lock_file_wait, [
2196         #include <linux/fs.h>
2197 ],[
2198         locks_lock_file_wait(NULL, NULL);
2199 ],[
2200         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
2201                 [kernel has locks_lock_file_wait])
2202 ])
2203 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2204
2205 #
2206 # LC_HAVE_QC_MAKE_REQUEST_FN
2207 #
2208 # 4.4 request_queue.make_request_fn defined as function returns with blk_qc_t
2209 # see kernel commit dece16353ef47d8d33f5302bc158072a9d65e26f
2210 #
2211 AC_DEFUN([LC_HAVE_QC_MAKE_REQUEST_FN], [
2212 LB_CHECK_COMPILE([if 'request_queue.make_request_fn' returns blk_qc_t],
2213 make_request_fn_blk_qc_t, [
2214         #include <linux/blkdev.h>
2215 ],[
2216         blk_qc_t ret;
2217         make_request_fn *mrf;
2218         ret = mrf(NULL, NULL);
2219 ],[
2220         AC_DEFINE(HAVE_QC_MAKE_REQUEST_FN, 1,
2221                 [request_queue.make_request_fn returns blk_qc_t])
2222 ])
2223 ]) # LC_HAVE_QC_MAKE_REQUEST_FN
2224
2225 #
2226 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2227 #
2228 # 4.4 kernel merged type-specific data with the payload data for keys
2229 #
2230 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
2231 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
2232 key_payload_data_array, [
2233         #include <linux/key.h>
2234 ],[
2235         ((struct key *)0)->payload.data[0] = NULL;
2236 ],[
2237         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
2238 ])
2239 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2240
2241 #
2242 # LC_HAVE_FILE_DENTRY
2243 #
2244 # 4.5 adds wrapper file_dentry
2245 #
2246 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
2247 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
2248 file_dentry, [
2249         #include <linux/fs.h>
2250 ],[
2251         file_dentry(NULL);
2252 ], [
2253         AC_DEFINE(HAVE_FILE_DENTRY, 1,
2254                 [kernel has file_dentry])
2255 ])
2256 ]) # LC_HAVE_FILE_DENTRY
2257
2258 #
2259 # LC_HAVE_INODE_LOCK
2260 #
2261 # 4.5 introduced inode_lock
2262 #
2263 AC_DEFUN([LC_HAVE_INODE_LOCK], [
2264 LB_CHECK_COMPILE([if 'inode_lock' is defined],
2265 inode_lock, [
2266         #include <linux/fs.h>
2267 ],[
2268         inode_lock(NULL);
2269 ], [
2270         AC_DEFINE(HAVE_INODE_LOCK, 1,
2271                   [inode_lock is defined])
2272 ])
2273 ]) # LC_HAVE_INODE_LOCK
2274
2275 #
2276 # LC_HAVE_IOP_GET_LINK
2277 #
2278 # 4.5 vfs replaced iop->follow_link with
2279 # iop->get_link
2280 #
2281 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
2282 LB_CHECK_COMPILE([if 'iop' has 'get_link'],
2283 inode_ops_get_link, [
2284         #include <linux/fs.h>
2285 ],[
2286         struct inode_operations iop;
2287         iop.get_link = NULL;
2288 ],[
2289         AC_DEFINE(HAVE_IOP_GET_LINK, 1,
2290                 [have iop get_link])
2291 ])
2292 ]) # LC_HAVE_IOP_GET_LINK
2293
2294 #
2295 # LC_HAVE_IN_COMPAT_SYSCALL
2296 #
2297 # 4.6 renamed is_compat_task to in_compat_syscall
2298 #
2299 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
2300 LB_CHECK_COMPILE([if 'in_compat_syscall' is defined],
2301 in_compat_syscall, [
2302         #include <linux/compat.h>
2303 ],[
2304         in_compat_syscall();
2305 ],[
2306         AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1,
2307                 [have in_compat_syscall])
2308 ])
2309 ]) # LC_HAVE_IN_COMPAT_SYSCALL
2310
2311 #
2312 # LC_DIRECTIO_2ARGS
2313 #
2314 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2315 # direct-io: eliminate the offset argument to ->direct_IO
2316 #
2317 AC_DEFUN([LC_DIRECTIO_2ARGS], [
2318 LB_CHECK_COMPILE([if '->direct_IO()' taken 2 arguments],
2319 direct_io_2args, [
2320         #include <linux/fs.h>
2321 ],[
2322         struct address_space_operations ops;
2323         struct iov_iter *iter = NULL;
2324         struct kiocb *iocb = NULL;
2325         int rc;
2326         rc = ops.direct_IO(iocb, iter);
2327 ],[
2328         AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1,
2329                 [direct_IO need 2 arguments])
2330 ])
2331 ]) # LC_DIRECTIO_2ARGS
2332
2333 #
2334 # LC_HAVE_POSIX_ACL_VALID_USER_NS
2335 #
2336 # 4.8 posix_acl_valid takes struct user_namespace
2337 #
2338 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
2339 LB_CHECK_COMPILE([if 'posix_acl_valid' takes 'struct user_namespace'],
2340 posix_acl_valid, [
2341         #include <linux/fs.h>
2342         #include <linux/posix_acl.h>
2343 ],[
2344         posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
2345 ],[
2346         AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
2347                 [posix_acl_valid takes struct user_namespace])
2348 ])
2349 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
2350
2351 #
2352 # LC_D_COMPARE_4ARGS
2353 #
2354 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
2355 # get rid of 'parent' argument of ->d_compare()
2356 #
2357 AC_DEFUN([LC_D_COMPARE_4ARGS], [
2358 LB_CHECK_COMPILE([if 'd_compare' taken 4 arguments],
2359 d_compare_4args, [
2360         #include <linux/dcache.h>
2361 ],[
2362         ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
2363 ],[
2364         AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
2365                 [d_compare need 4 arguments])
2366 ])
2367 ]) # LC_D_COMPARE_4ARGS
2368
2369 #
2370 # LC_PROG_LINUX
2371 #
2372 # Lustre linux kernel checks
2373 #
2374 AC_DEFUN([LC_PROG_LINUX], [
2375         AC_MSG_NOTICE([Lustre kernel checks
2376 ==============================================================================])
2377
2378         LC_CONFIG_PINGER
2379         LC_CONFIG_CHECKSUM
2380         LC_CONFIG_HEALTH_CHECK_WRITE
2381         LC_CONFIG_LRU_RESIZE
2382
2383         LC_GLIBC_SUPPORT_FHANDLES
2384         LC_CONFIG_GSS
2385         LC_OPENSSL_SSK
2386
2387         # 2.6.32
2388         LC_BLK_QUEUE_MAX_SEGMENTS
2389
2390         # 2.6.34
2391         LC_HAVE_DQUOT_FS_DISK_QUOTA
2392         LC_HAVE_DQUOT_SUSPEND
2393         LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
2394
2395         # 2.6.35, 3.0.0
2396         LC_FILE_FSYNC
2397         LC_EXPORT_SIMPLE_SETATTR
2398         LC_EXPORT_TRUNCATE_COMPLETE_PAGE
2399
2400         # 2.6.36
2401         LC_FS_STRUCT_RWLOCK
2402         LC_SBOPS_EVICT_INODE
2403
2404         # 2.6.37
2405         LC_KERNEL_LOCKED
2406
2407         # 2.6.38
2408         LC_BLKDEV_GET_BY_DEV
2409         LC_GENERIC_PERMISSION
2410         LC_DCACHE_LOCK
2411         LC_INODE_I_RCU
2412         LC_D_COMPARE_7ARGS
2413         LC_D_DELETE_CONST
2414         LC_HAVE_BLK_PLUG
2415
2416         # 2.6.39
2417         LC_REQUEST_QUEUE_UNPLUG_FN
2418         LC_HAVE_FHANDLE_SYSCALLS
2419         LC_HAVE_FSTYPE_MOUNT
2420         LC_IOP_TRUNCATE
2421         LC_HAVE_INODE_OWNER_OR_CAPABLE
2422         LC_HAVE_SECURITY_IINITSEC
2423
2424         # 3.0
2425         LC_DIRTY_INODE_WITH_FLAG
2426         LC_SETNS
2427
2428         # 3.1
2429         LC_LM_XXX_LOCK_MANAGER_OPS
2430         LC_INODE_DIO_WAIT
2431         LC_IOP_GET_ACL
2432         LC_FILE_LLSEEK_SIZE
2433         LC_INODE_PERMISION_2ARGS
2434         LC_RADIX_EXCEPTION_ENTRY
2435         LC_HAVE_LOOP_CTL_GET_FREE
2436
2437         # 3.2
2438         LC_HAVE_VOID_MAKE_REQUEST_FN
2439         LC_HAVE_PROTECT_I_NLINK
2440
2441         # 3.3
2442         LC_HAVE_MIGRATE_HEADER
2443         LC_MIGRATEPAGE_4ARGS
2444         LC_SUPEROPS_USE_DENTRY
2445         LC_INODEOPS_USE_UMODE_T
2446         LC_HAVE_CACHE_REGISTER
2447
2448         # 3.4
2449         LC_HAVE_D_MAKE_ROOT
2450         LC_KMAP_ATOMIC_HAS_1ARG
2451
2452         # 3.5
2453         LC_HAVE_CLEAR_INODE
2454         LC_HAVE_ENCODE_FH_PARENT
2455         LC_FILE_LLSEEK_SIZE_5ARG
2456
2457         # 3.6
2458         LC_DATA_FOR_LLITE_IS_LIST
2459         LC_DENTRY_OPEN_USE_PATH
2460         LC_HAVE_IOP_ATOMIC_OPEN
2461         LC_HAVE_SB_START_WRITE
2462
2463         # 3.7
2464         LC_HAVE_POSIXACL_USER_NS
2465
2466         # 3.8
2467         LC_HAVE_FILE_F_INODE
2468         LC_HAVE_FILE_INODE
2469         LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
2470
2471         # 3.9
2472         LC_HAVE_HLIST_FOR_EACH_3ARG
2473         LC_HAVE_BIO_END_SECTOR
2474         LC_HAVE_IS_SXID
2475
2476         # 3.10
2477         LC_BLKDEV_RELEASE_RETURN_INT
2478         LC_HAVE_REMOVE_PROC_SUBTREE
2479         LC_HAVE_PROC_REMOVE
2480         LC_HAVE_PROJECT_QUOTA
2481         LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
2482
2483         # 3.11
2484         LC_INVALIDATE_RANGE
2485         LC_HAVE_DIR_CONTEXT
2486         LC_D_COMPARE_5ARGS
2487         LC_HAVE_DCOUNT
2488         LC_HAVE_DENTRY_D_U_D_ALIAS
2489         LC_HAVE_DENTRY_D_CHILD
2490         LC_PID_NS_FOR_CHILDREN
2491
2492         # 3.12
2493         LC_OLDSIZE_TRUNCATE_PAGECACHE
2494         LC_KIOCB_KI_LEFT
2495
2496         # 3.13
2497         LC_VFS_RENAME_5ARGS
2498         LC_VFS_UNLINK_3ARGS
2499
2500         # 3.14
2501         LC_HAVE_BVEC_ITER
2502         LC_HAVE_TRUNCATE_IPAGES_FINAL
2503
2504         # 3.15
2505         LC_VFS_RENAME_6ARGS
2506
2507         # 3.16
2508         LC_DIRECTIO_USE_ITER
2509         LC_HAVE_IOV_ITER_INIT_DIRECTION
2510         LC_HAVE_IOV_ITER_TRUNCATE
2511         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
2512
2513         # 3.17
2514         LC_KEY_MATCH_DATA
2515
2516         # 3.18
2517         LC_PERCPU_COUNTER_INIT
2518         LC_NFS_FILLDIR_USE_CTX
2519
2520         # 3.19
2521         LC_KIOCB_HAS_NBYTES
2522         LC_HAVE_DQUOT_QC_DQBLK
2523
2524         # 3.20
2525         LC_BACKING_DEV_INFO_REMOVAL
2526         LC_HAVE_BDI_CAP_MAP_COPY
2527
2528         # 4.0.0
2529         LC_CANCEL_DIRTY_PAGE
2530
2531         # 4.1.0
2532         LC_IOV_ITER_RW
2533         LC_HAVE_SYNC_READ_WRITE
2534
2535         # 4.2
2536         LC_NEW_CANCEL_DIRTY_PAGE
2537         LC_BIO_ENDIO_USES_ONE_ARG
2538         LC_SYMLINK_OPS_USE_NAMEIDATA
2539
2540         # 4.3
2541         LC_HAVE_CACHE_HEAD_HLIST
2542
2543         # 4.4
2544         LC_HAVE_LOCKS_LOCK_FILE_WAIT
2545         LC_HAVE_QC_MAKE_REQUEST_FN
2546         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2547         LC_HAVE_BI_CNT
2548
2549         # 4.5
2550         LC_HAVE_FILE_DENTRY
2551
2552         # 4.5
2553         LC_HAVE_INODE_LOCK
2554         LC_HAVE_IOP_GET_LINK
2555
2556         # 4.6
2557         LC_HAVE_IN_COMPAT_SYSCALL
2558
2559         # 4.7
2560         LC_DIRECTIO_2ARGS
2561
2562         # 4.8
2563         LC_HAVE_POSIX_ACL_VALID_USER_NS
2564         LC_D_COMPARE_4ARGS
2565
2566         #
2567         AS_IF([test "x$enable_server" != xno], [
2568                 LC_FUNC_DEV_SET_RDONLY
2569                 LC_STACK_SIZE
2570                 LC_QUOTA64
2571                 LC_QUOTA_CONFIG
2572         ])
2573 ]) # LC_PROG_LINUX
2574
2575 #
2576 # LC_CONFIG_CLIENT
2577 #
2578 # Check whether to build the client side of Lustre
2579 #
2580 AC_DEFUN([LC_CONFIG_CLIENT], [
2581 AC_MSG_CHECKING([whether to build Lustre client support])
2582 AC_ARG_ENABLE([client],
2583         AC_HELP_STRING([--disable-client],
2584                 [disable Lustre client support]),
2585         [], [enable_client="yes"])
2586 AC_MSG_RESULT([$enable_client])
2587 ]) # LC_CONFIG_CLIENT
2588
2589 #
2590 # --enable-mpitests
2591 #
2592 AC_DEFUN([LB_CONFIG_MPITESTS], [
2593 AC_ARG_ENABLE([mpitests],
2594         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
2595                        [include mpi tests]), [
2596                 enable_mpitests="yes"
2597                 case $enableval in
2598                 yes)
2599                         MPICC_WRAPPER="mpicc"
2600                         ;;
2601                 no)
2602                         enable_mpitests="no"
2603                         ;;
2604                 *)
2605                         MPICC_WRAPPER=$enableval
2606                         ;;
2607                 esac
2608         ], [
2609                 enable_mpitests="yes"
2610                 MPICC_WRAPPER="mpicc"
2611         ])
2612
2613         if test "x$enable_mpitests" != "xno"; then
2614                 oldcc=$CC
2615                 CC=$MPICC_WRAPPER
2616                 AC_CACHE_CHECK([whether mpitests can be built],
2617                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2618                         #include <mpi.h>
2619                         int main(void) {
2620                                 int flag;
2621                                 MPI_Initialized(&flag);
2622                                 return 0;
2623                         }
2624                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
2625                 ])
2626                 enable_mpitests=$lb_cv_mpi_tests
2627                 CC=$oldcc
2628         fi
2629         AC_SUBST(MPICC_WRAPPER)
2630 ]) # LB_CONFIG_MPITESTS
2631
2632 #
2633 # LC_CONFIG_QUOTA
2634 #
2635 # whether to enable quota support global control
2636 #
2637 AC_DEFUN([LC_CONFIG_QUOTA], [
2638 AC_MSG_CHECKING([whether to enable quota support global control])
2639 AC_ARG_ENABLE([quota],
2640         AC_HELP_STRING([--enable-quota],
2641                 [enable quota support]),
2642         [], [enable_quota="yes"])
2643 AS_IF([test "x$enable_quota" = xyes],
2644         [AC_MSG_RESULT([yes])],
2645         [AC_MSG_RESULT([no])])
2646 ]) # LC_CONFIG_QUOTA
2647
2648 #
2649 # LC_QUOTA
2650 #
2651 AC_DEFUN([LC_QUOTA], [
2652 #check global
2653 LC_CONFIG_QUOTA
2654 #check for utils
2655 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
2656         AC_CHECK_HEADER([sys/quota.h],
2657                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
2658                         [Define to 1 if you have <sys/quota.h>.])],
2659                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2660 ])
2661 ]) # LC_QUOTA
2662
2663 #
2664 # LC_CONFIG_NODEMAP_PROC_DEBUG
2665 #
2666 # enable nodemap proc file debugging
2667 #
2668 AC_DEFUN([LC_NODEMAP_PROC_DEBUG], [
2669 AC_MSG_CHECKING([whether to enable nodemap proc debug])
2670 AC_ARG_ENABLE([nodemap_proc_debug],
2671         AC_HELP_STRING([--enable-nodemap-proc-debug],
2672                 [enable nodemap proc debug]),
2673         [], [enable_nodemap_proc_debug="no"])
2674 AC_MSG_RESULT([$enable_nodemap_proc_debug])
2675 AS_IF([test "x$enable_nodemap_proc_debug" != xno],
2676         [AC_DEFINE(NODEMAP_PROC_DEBUG, 1,
2677                 [enable nodemap proc debug support])])
2678 ]) # LC_NODEMAP_PROC_DEBUG
2679
2680 #
2681 # LC_OSD_ADDON
2682 #
2683 # configure support for optional OSD implementation
2684 #
2685 AC_DEFUN([LC_OSD_ADDON], [
2686 AC_MSG_CHECKING([whether to use OSD addon])
2687 AC_ARG_WITH([osd],
2688         AC_HELP_STRING([--with-osd=path],
2689                 [set path to optional osd]),
2690         [
2691         case "$with_osd" in
2692         no)
2693                 ENABLEOSDADDON=0
2694                 ;;
2695         *)
2696                 OSDADDON="$with_osd"
2697                 ENABLEOSDADDON=1
2698                 ;;
2699         esac
2700         ], [
2701                 ENABLEOSDADDON=0
2702         ])
2703 AS_IF([test $ENABLEOSDADDON -eq 0], [
2704         AC_MSG_RESULT([no])
2705         OSDADDON=""
2706 ], [
2707         OSDMODNAME=$(basename $OSDADDON)
2708         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
2709                 AC_MSG_RESULT([can't link])
2710                 OSDADDON=""
2711         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
2712                 AC_MSG_RESULT([$OSDMODNAME])
2713                 OSDADDON="subdir-m += $OSDMODNAME"
2714         ], [
2715                 AC_MSG_RESULT([can't link])
2716                 OSDADDON=""
2717         ])
2718 ])
2719 AC_SUBST(OSDADDON)
2720 ]) # LC_OSD_ADDON
2721
2722 #
2723 # LC_CONFIGURE
2724 #
2725 # other configure checks
2726 #
2727 AC_DEFUN([LC_CONFIGURE], [
2728 AC_MSG_NOTICE([Lustre core checks
2729 ==============================================================================])
2730
2731 LC_CONFIG_OBD_BUFFER_SIZE
2732
2733 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
2734         [CFLAGS="$CFLAGS -Wall -Werror"])
2735
2736 # maximum MDS thread count
2737 LC_MDS_MAX_THREADS
2738
2739 # lustre/utils/gss/gss_util.c
2740 # lustre/utils/gss/gssd_proc.c
2741 # lustre/utils/gss/krb5_util.c
2742 # lustre/utils/llog_reader.c
2743 # lustre/utils/create_iam.c
2744 # lustre/utils/libiam.c
2745 AC_CHECK_HEADERS([netdb.h endian.h])
2746 AC_CHECK_FUNCS([gethostbyname])
2747
2748 # lustre/utils/llverdev.c
2749 AC_CHECK_HEADERS([blkid/blkid.h])
2750
2751 # lustre/utils/llverfs.c
2752 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2753
2754 SELINUX=""
2755 AC_CHECK_LIB([selinux], [is_selinux_enabled],
2756         [AC_CHECK_HEADERS([selinux/selinux.h],
2757                         [SELINUX="-lselinux"
2758                         AC_DEFINE([HAVE_SELINUX], 1,
2759                                 [support for selinux ])],
2760                         [AC_MSG_WARN([
2761
2762 No libselinux-devel package found, unable to build selinux enabled tools
2763 ])
2764 ])],
2765         [AC_MSG_WARN([
2766
2767 No selinux package found, unable to build selinux enabled tools
2768 ])
2769 ])
2770 AC_SUBST(SELINUX)
2771
2772 # Super safe df
2773 AC_MSG_CHECKING([whether to report minimum OST free space])
2774 AC_ARG_ENABLE([mindf],
2775         AC_HELP_STRING([--enable-mindf],
2776                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2777         [], [enable_mindf="no"])
2778 AC_MSG_RESULT([$enable_mindf])
2779 AS_IF([test "$enable_mindf" = "yes"],
2780         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
2781
2782 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2783 AC_ARG_ENABLE([fail_alloc],
2784         AC_HELP_STRING([--disable-fail-alloc],
2785                 [disable randomly alloc failure]),
2786         [], [enable_fail_alloc="yes"])
2787 AC_MSG_RESULT([$enable_fail_alloc])
2788 AS_IF([test "x$enable_fail_alloc" != xno],
2789         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
2790                 [enable randomly alloc failure])])
2791
2792 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2793 AC_ARG_ENABLE([invariants],
2794         AC_HELP_STRING([--enable-invariants],
2795                 [enable invariant checking (cpu intensive)]),
2796         [], [enable_invariants="no"])
2797 AC_MSG_RESULT([$enable_invariants])
2798 AS_IF([test "x$enable_invariants" = xyes],
2799         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
2800                 [enable invariant checking])])
2801
2802 AC_MSG_CHECKING([whether to track references with lu_ref])
2803 AC_ARG_ENABLE([lu_ref],
2804         AC_HELP_STRING([--enable-lu_ref],
2805                 [enable lu_ref reference tracking code]),
2806         [], [enable_lu_ref="no"])
2807 AC_MSG_RESULT([$enable_lu_ref])
2808 AS_IF([test "x$enable_lu_ref" = xyes],
2809         [AC_DEFINE([USE_LU_REF], 1,
2810                 [enable lu_ref reference tracking code])])
2811
2812 AC_MSG_CHECKING([whether to enable page state tracking])
2813 AC_ARG_ENABLE([pgstate-track],
2814         AC_HELP_STRING([--enable-pgstate-track],
2815                 [enable page state tracking]),
2816         [], [enable_pgstat_track="no"])
2817 AC_MSG_RESULT([$enable_pgstat_track])
2818 AS_IF([test "x$enable_pgstat_track" = xyes],
2819         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
2820                 [enable page state tracking code])])
2821 ]) # LC_CONFIGURE
2822
2823 #
2824 # LC_CONDITIONALS
2825 #
2826 # AM_CONDITIONALS for lustre
2827 #
2828 AC_DEFUN([LC_CONDITIONALS], [
2829 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2830 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2831 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2832 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2833 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2834 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2835 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2836 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2837 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2838 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
2839 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2840 ]) # LC_CONDITIONALS
2841
2842 #
2843 # LC_CONFIG_FILES
2844 #
2845 # files that should be generated with AC_OUTPUT
2846 #
2847 AC_DEFUN([LC_CONFIG_FILES],
2848 [AC_CONFIG_FILES([
2849 lustre/Makefile
2850 lustre/autoMakefile
2851 lustre/autoconf/Makefile
2852 lustre/conf/Makefile
2853 lustre/contrib/Makefile
2854 lustre/doc/Makefile
2855 lustre/include/Makefile
2856 lustre/include/lustre/Makefile
2857 lustre/include/uapi/linux/Makefile
2858 lustre/kernel_patches/targets/3.10-rhel7.target
2859 lustre/kernel_patches/targets/2.6-rhel6.9.target
2860 lustre/kernel_patches/targets/2.6-rhel6.8.target
2861 lustre/kernel_patches/targets/2.6-rhel6.7.target
2862 lustre/kernel_patches/targets/2.6-rhel6.6.target
2863 lustre/kernel_patches/targets/2.6-rhel6.target
2864 lustre/kernel_patches/targets/2.6-rhel5.target
2865 lustre/kernel_patches/targets/2.6-sles11.target
2866 lustre/kernel_patches/targets/3.0-sles11.target
2867 lustre/kernel_patches/targets/3.0-sles11sp3.target
2868 lustre/kernel_patches/targets/3.0-sles11sp4.target
2869 lustre/kernel_patches/targets/3.12-sles12.target
2870 lustre/kernel_patches/targets/4.4-sles12.target
2871 lustre/kernel_patches/targets/2.6-fc11.target
2872 lustre/kernel_patches/targets/2.6-fc12.target
2873 lustre/kernel_patches/targets/2.6-fc15.target
2874 lustre/kernel_patches/targets/3.x-fc18.target
2875 lustre/ldlm/Makefile
2876 lustre/fid/Makefile
2877 lustre/fid/autoMakefile
2878 lustre/llite/Makefile
2879 lustre/llite/autoMakefile
2880 lustre/lov/Makefile
2881 lustre/lov/autoMakefile
2882 lustre/mdc/Makefile
2883 lustre/mdc/autoMakefile
2884 lustre/lmv/Makefile
2885 lustre/lmv/autoMakefile
2886 lustre/lfsck/Makefile
2887 lustre/lfsck/autoMakefile
2888 lustre/mdt/Makefile
2889 lustre/mdt/autoMakefile
2890 lustre/mdd/Makefile
2891 lustre/mdd/autoMakefile
2892 lustre/fld/Makefile
2893 lustre/fld/autoMakefile
2894 lustre/obdclass/Makefile
2895 lustre/obdclass/autoMakefile
2896 lustre/obdclass/linux/Makefile
2897 lustre/obdecho/Makefile
2898 lustre/obdecho/autoMakefile
2899 lustre/ofd/Makefile
2900 lustre/ofd/autoMakefile
2901 lustre/osc/Makefile
2902 lustre/osc/autoMakefile
2903 lustre/ost/Makefile
2904 lustre/ost/autoMakefile
2905 lustre/osd-ldiskfs/Makefile
2906 lustre/osd-ldiskfs/autoMakefile
2907 lustre/osd-zfs/Makefile
2908 lustre/osd-zfs/autoMakefile
2909 lustre/mgc/Makefile
2910 lustre/mgc/autoMakefile
2911 lustre/mgs/Makefile
2912 lustre/mgs/autoMakefile
2913 lustre/target/Makefile
2914 lustre/ptlrpc/Makefile
2915 lustre/ptlrpc/autoMakefile
2916 lustre/ptlrpc/gss/Makefile
2917 lustre/ptlrpc/gss/autoMakefile
2918 lustre/quota/Makefile
2919 lustre/quota/autoMakefile
2920 lustre/scripts/Makefile
2921 lustre/tests/Makefile
2922 lustre/tests/mpi/Makefile
2923 lustre/utils/Makefile
2924 lustre/utils/gss/Makefile
2925 lustre/osp/Makefile
2926 lustre/osp/autoMakefile
2927 lustre/lod/Makefile
2928 lustre/lod/autoMakefile
2929 ])
2930 ]) # LC_CONFIG_FILES