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_GLIBC_SUPPORT_FHANDLES
  51 #
  52 AC_DEFUN([LC_GLIBC_SUPPORT_FHANDLES], [
  53 AC_CHECK_FUNCS([name_to_handle_at],
  54         [AC_DEFINE(HAVE_FHANDLE_GLIBC_SUPPORT, 1,
  55                 [file handle and related syscalls are supported])],
  56         [AC_MSG_WARN([file handle and related syscalls are not supported])])
  57 ]) # LC_GLIBC_SUPPORT_FHANDLES
  58
  59 #
  60 # LC_STACK_SIZE
  61 #
  62 # Ensure the stack size is at least 8k in Lustre server (all kernels)
  63 #
  64 AC_DEFUN([LC_STACK_SIZE], [
  65 LB_CHECK_COMPILE([if stack size is at least 8k],
  66 stack_size_8k, [
  67         #include <linux/thread_info.h>
  68 ], [
  69         #if THREAD_SIZE < 8192
  70         #error "stack size < 8192"
  71         #endif
  72 ], [], [AC_MSG_ERROR([
  73
  74 Lustre requires that Linux is configured with at least a 8KB stack.
  75 ])])
  76 ]) # LC_STACK_SIZE
  77
  78 #
  79 # LC_MDS_MAX_THREADS
  80 #
  81 # Allow the user to set the MDS thread upper limit
  82 #
  83 AC_DEFUN([LC_MDS_MAX_THREADS], [
  84 AC_MSG_CHECKING([for maximum number of MDS threads])
  85 AC_ARG_WITH([mds_max_threads],
  86         AC_HELP_STRING([--with-mds-max-threads=count],
  87                 [maximum threads available on the MDS: (default=512)]),
  88         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
  89                 [maximum number of MDS threads])])
  90 AC_MSG_RESULT([$with_mds_max_threads])
  91 ]) # LC_MDS_MAX_THREADS
  92
  93 #
  94 # LC_CONFIG_PINGER
  95 #
  96 # the pinger is temporary, until we have the recovery node in place
  97 #
  98 AC_DEFUN([LC_CONFIG_PINGER], [
  99 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 100 AC_ARG_ENABLE([pinger],
 101         AC_HELP_STRING([--disable-pinger],
 102                 [disable recovery pinger support]),
 103         [], [enable_pinger="yes"])
 104 AC_MSG_RESULT([$enable_pinger])
 105 AS_IF([test "x$enable_pinger" != xno],
 106         [AC_DEFINE(ENABLE_PINGER, 1,[Use the Pinger])])
 107 ]) # LC_CONFIG_PINGER
 108
 109 #
 110 # LC_CONFIG_CHECKSUM
 111 #
 112 # do checksum of bulk data between client and OST
 113 #
 114 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 115 AC_MSG_CHECKING([whether to enable data checksum support])
 116 AC_ARG_ENABLE([checksum],
 117         AC_HELP_STRING([--disable-checksum],
 118                 [disable data checksum support]),
 119         [], [enable_checksum="yes"])
 120 AC_MSG_RESULT([$enable_checksum])
 121 AS_IF([test "x$enable_checksum" != xno],
 122         [AC_DEFINE(ENABLE_CHECKSUM, 1, [do data checksums])])
 123 ]) # LC_CONFIG_CHECKSUM
 124
 125 #
 126 # LC_CONFIG_HEALTH_CHECK_WRITE
 127 #
 128 # Turn off the actual write to the disk
 129 #
 130 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 131 AC_MSG_CHECKING([whether to enable a write with the health check])
 132 AC_ARG_ENABLE([health_write],
 133         AC_HELP_STRING([--enable-health_write],
 134                 [enable disk writes when doing health check]),
 135         [], [enable_health_write="no"])
 136 AC_MSG_RESULT([$enable_health_write])
 137 AS_IF([test "x$enable_health_write" != xno],
 138         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 139 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 140
 141 #
 142 # LC_CONFIG_LRU_RESIZE
 143 #
 144 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 145 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 146 AC_ARG_ENABLE([lru_resize],
 147         AC_HELP_STRING([--enable-lru-resize],
 148                 [enable lru resize support]),
 149         [], [enable_lru_resize="yes"])
 150 AC_MSG_RESULT([$enable_lru_resize])
 151 AS_IF([test "x$enable_lru_resize" != xno],
 152         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 153 ]) # LC_CONFIG_LRU_RESIZE
 154
 155 #
 156 # LC_QUOTA_CONFIG
 157 #
 158 # Quota support. The kernel must support CONFIG_QUOTA.
 159 #
 160 AC_DEFUN([LC_QUOTA_CONFIG], [
 161 LB_CHECK_CONFIG_IM([QUOTA], [],
 162         [AC_MSG_ERROR([
 163
 164 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 165 ])])
 166 ]) # LC_QUOTA_CONFIG
 167
 168 #
 169 # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 170 #
 171 # truncate_complete_page() has never been exported from an upstream kernel
 172 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 173 # delete_from_page_cache() is exported from 2.6.39
 174 #
 175 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE], [
 176 LB_CHECK_EXPORT([truncate_complete_page], [mm/truncate.c],
 177         [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 178                 [kernel export truncate_complete_page])])
 179 LB_CHECK_EXPORT([remove_from_page_cache], [mm/filemap.c],
 180         [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 181                 [kernel export remove_from_page_cache])])
 182 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
 183         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 184                 [kernel export delete_from_page_cache])])
 185 ]) # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 186
 187 #
 188 # LC_CONFIG_GSS_KEYRING
 189 #
 190 # default 'auto', tests for dependencies, if found, enables;
 191 # only called if gss is enabled
 192 #
 193 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 194 AC_MSG_CHECKING([whether to enable gss keyring backend])
 195 AC_ARG_ENABLE([gss_keyring],
 196         [AC_HELP_STRING([--disable-gss-keyring],
 197                 [disable gss keyring backend])],
 198         [], [enable_gss_keyring="auto"])
 199 AC_MSG_RESULT([$enable_gss_keyring])
 200 AS_IF([test "x$enable_gss_keyring" != xno], [
 201         LB_CHECK_CONFIG_IM([KEYS], [], [
 202                 gss_keyring_conf_test="fail"
 203                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 204
 205         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 206                 gss_keyring_conf_test="fail"
 207                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 208
 209         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 210                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 211                         [Define this if you enable gss keyring backend])
 212                 enable_gss_keyring="yes"
 213         ], [
 214                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 215                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 216                 ])
 217         ])
 218 ])
 219 ]) # LC_CONFIG_GSS_KEYRING
 220
 221 #
 222 # LC_HAVE_CRED_TGCRED
 223 #
 224 # rhel7 struct cred has no member tgcred
 225 #
 226 AC_DEFUN([LC_HAVE_CRED_TGCRED], [
 227 LB_CHECK_COMPILE([if 'struct cred' has member 'tgcred'],
 228 cred_tgcred, [
 229         #include <linux/cred.h>
 230 ],[
 231         ((struct cred *)0)->tgcred = NULL;
 232 ],[
 233         AC_DEFINE(HAVE_CRED_TGCRED, 1,
 234                 [struct cred has member tgcred])
 235 ])
 236 ]) # LC_HAVE_CRED_TGCRED
 237
 238 #
 239 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 240 #
 241 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 242 #
 243 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 244 LB_CHECK_COMPILE([if 'key_type->instantiate' has two args],
 245 key_type_instantiate_2args, [
 246         #include <linux/key-type.h>
 247 ],[
 248         ((struct key_type *)0)->instantiate(0, NULL);
 249 ],[
 250         AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 251                 [key_type->instantiate has two args])
 252 ])
 253 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 254
 255 #
 256 # LC_CONFIG_SUNRPC
 257 #
 258 AC_DEFUN([LC_CONFIG_SUNRPC], [
 259 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 260         AS_IF([test "x$sunrpc_required" = xyes], [
 261                 AC_MSG_ERROR([
 262
 263 kernel SUNRPC support is required by using GSS.
 264 ])
 265         ])])
 266 ]) # LC_CONFIG_SUNRPC
 267
 268 #
 269 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 270 #
 271 # Build gss and related tools of Lustre. Currently both kernel and user space
 272 # parts are depend on linux platform.
 273 #
 274 AC_DEFUN([LC_CONFIG_GSS], [
 275 AC_MSG_CHECKING([whether to enable gss support])
 276 AC_ARG_ENABLE([gss],
 277         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 278         [], [enable_gss="auto"])
 279 AC_MSG_RESULT([$enable_gss])
 280
 281 AS_IF([test "x$enable_gss" != xno], [
 282         LC_CONFIG_GSS_KEYRING
 283         LC_HAVE_CRED_TGCRED
 284         LC_KEY_TYPE_INSTANTIATE_2ARGS
 285         sunrpc_required=$enable_gss
 286         LC_CONFIG_SUNRPC
 287         sunrpc_required="no"
 288
 289         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 290                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 291         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 292                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 293         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 294                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 295         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 296                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 297
 298         require_krb5=$enable_gss
 299         AC_KERBEROS_V5
 300         require_krb5="no"
 301
 302         AS_IF([test -n "$KRBDIR"], [
 303                 gss_conf_test="success"
 304         ], [
 305                 gss_conf_test="failure"
 306         ])
 307
 308         AS_IF([test "x$gss_conf_test" = xsuccess && test "x$enable_gss" != xno], [
 309                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 310                 enable_gss="yes"
 311         ], [
 312                 enable_gss_keyring="no"
 313                 enable_gss="no"
 314         ])
 315
 316         enable_ssk=$enable_gss
 317 ], [
 318         enable_gss_keyring="no"
 319 ])
 320 ]) # LC_CONFIG_GSS
 321
 322 # LC_OPENSSL_SSK
 323 #
 324 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 325 AC_DEFUN([LC_OPENSSL_SSK], [
 326 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 327 AS_IF([test "x$enable_ssk" != xno], [
 328 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 329         #include <openssl/hmac.h>
 330         #include <openssl/evp.h>
 331
 332         int main(void) {
 333                 int rc;
 334                 rc = HMAC_Init_ex(NULL, "test", 4, EVP_md_null(), NULL);
 335         }
 336 ])],[AC_DEFINE(HAVE_OPENSSL_SSK, 1,
 337                [OpenSSL HMAC functions needed for SSK])],
 338         [enable_ssk="no"])
 339 ])
 340 AC_MSG_RESULT([$enable_ssk])
 341 ]) # LC_OPENSSL_SSK
 342
 343 # LC_INODE_PERMISION_2ARGS
 344 #
 345 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 346 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 347 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 348 # v3.1 onward have a 2 arg version (inode, mask)
 349 #
 350 AC_DEFUN([LC_INODE_PERMISION_2ARGS], [
 351 LB_CHECK_COMPILE([if 'inode_operations->permission' has two args],
 352 inode_ops_permission_2args, [
 353         #include <linux/fs.h>
 354 ],[
 355         struct inode *inode __attribute__ ((unused));
 356
 357         inode = NULL;
 358         inode->i_op->permission(NULL, 0);
 359 ],[
 360         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 361                 [inode_operations->permission has two args])
 362 ])
 363 ]) # LC_INODE_PERMISION_2ARGS
 364
 365 #
 366 # LC_BLK_QUEUE_MAX_SEGMENTS
 367 #
 368 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 369 #
 370 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS], [
 371 LB_CHECK_COMPILE([if 'blk_queue_max_segments' is defined],
 372 blk_queue_max_segments, [
 373         #include <linux/blkdev.h>
 374 ],[
 375         blk_queue_max_segments(NULL, 0);
 376 ],[
 377         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 378                 [blk_queue_max_segments is defined])
 379 ])
 380 ]) # LC_BLK_QUEUE_MAX_SEGMENTS
 381
 382 #
 383 # LC_HAVE_XATTR_HANDLER_FLAGS
 384 #
 385 # 2.6.33 added a private flag to xattr_handler
 386 #
 387 AC_DEFUN([LC_HAVE_XATTR_HANDLER_FLAGS], [
 388 LB_CHECK_COMPILE([if 'struct xattr_handler' has flags field],
 389 xattr_handler_flags, [
 390         #include <linux/xattr.h>
 391 ],[
 392         struct xattr_handler handler;
 393
 394         handler.flags = 0;
 395 ],[
 396         AC_DEFINE(HAVE_XATTR_HANDLER_FLAGS, 1, [flags field exist])
 397 ])
 398 ]) # LC_HAVE_XATTR_HANDLER_FLAGS
 399
 400 #
 401 # LC_HAVE_DQUOT_FS_DISK_QUOTA
 402 #
 403 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 404 #
 405 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA], [
 406 tmp_flags="$EXTRA_KCFLAGS"
 407 EXTRA_KCFLAGS="-Werror"
 408 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct fs_disk_quota],
 409 fs_disk_quota, [
 410         #include <linux/fs.h>
 411         #include <linux/quota.h>
 412 ],[
 413         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 414 ],[
 415         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 416                 [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 417 ],[
 418         LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct kqid & fs_disk_quota],
 419         kqid_fs_disk_quota, [
 420                 #include <linux/fs.h>
 421                 #include <linux/quota.h>
 422         ],[
 423                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 424         ],[
 425                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 426                         [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 427                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
 428                         [quotactl_ops.set_dqblk takes struct kqid])
 429         ])
 430 ])
 431 EXTRA_KCFLAGS="$tmp_flags"
 432 ]) # LC_HAVE_DQUOT_FS_DISK_QUOTA
 433
 434 #
 435 # LC_HAVE_DQUOT_SUSPEND
 436 #
 437 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 438 #
 439 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND], [
 440 LB_CHECK_COMPILE([if 'dquot_suspend' is defined],
 441 dquot_suspend, [
 442         #include <linux/quotaops.h>
 443 ],[
 444         dquot_suspend(NULL, -1);
 445 ],[
 446         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 447 ])
 448 ]) # LC_HAVE_DQUOT_SUSPEND
 449
 450 #
 451 # LC_QUOTA64
 452 #
 453 # Check if kernel has been patched for 64-bit quota limits support.
 454 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 455 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 456 # that in the absence of quotaio_v1.h in the kernel headers.
 457 #
 458 AC_DEFUN([LC_QUOTA64], [
 459 tmp_flags="$EXTRA_KCFLAGS"
 460 EXTRA_KCFLAGS="-I$LINUX/fs"
 461 LB_CHECK_COMPILE([if kernel has 64-bit quota limits support],
 462 quota64, [
 463         #include <linux/kernel.h>
 464         #include <linux/fs.h>
 465         #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 466         #include <quota/quotaio_v2.h>
 467         struct v2r1_disk_dqblk dqblk_r1;
 468         #else
 469         #include <linux/quota.h>
 470         int ver = QFMT_VFS_V1;
 471         #endif
 472 ], [], [
 473         AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 474 ],[
 475         LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],
 476                 [AC_MSG_ERROR([You have got no 64-bit kernel quota support.])])
 477 ])
 478 EXTRA_KCFLAGS=$tmp_flags
 479 ]) # LC_QUOTA64
 480
 481 #
 482 # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 483 #
 484 # 2.6.34 adds __add_wait_queue_exclusive
 485 #
 486 AC_DEFUN([LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE], [
 487 LB_CHECK_COMPILE([if '__add_wait_queue_exclusive' exists],
 488 __add_wait_queue_exclusive, [
 489         #include <linux/wait.h>
 490 ],[
 491         wait_queue_head_t queue = { };
 492         wait_queue_t wait = { };
 493
 494         __add_wait_queue_exclusive(&queue, &wait);
 495 ],[
 496         AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
 497                   [__add_wait_queue_exclusive exists])
 498 ])
 499 ]) # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 500
 501 #
 502 # LC_FS_STRUCT_RWLOCK
 503 #
 504 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 505 #
 506 AC_DEFUN([LC_FS_STRUCT_RWLOCK], [
 507 LB_CHECK_COMPILE([if 'fs_struct.lock' use rwlock],
 508 fs_struct_rwlock, [
 509         #include <asm/atomic.h>
 510         #include <linux/spinlock.h>
 511         #include <linux/fs_struct.h>
 512 ],[
 513         struct fs_struct fss = { };
 514         rwlock_t rwl = { };
 515
 516         fss.lock = rwl;
 517 ],[
 518         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1, [fs_struct.lock use rwlock])
 519 ])
 520 ]) # LC_FS_STRUCT_RWLOCK
 521
 522 #
 523 # LC_SBOPS_EVICT_INODE
 524 #
 525 # 2.6.36 super_operations add evict_inode method. it hybird of
 526 # delete_inode & clear_inode.
 527 #
 528 AC_DEFUN([LC_SBOPS_EVICT_INODE], [
 529 LB_CHECK_COMPILE([if 'super_operations.evict_inode' exist],
 530 super_ops_evict_inode, [
 531         #include <linux/fs.h>
 532 ],[
 533         ((struct super_operations *)0)->evict_inode(NULL);
 534 ],[
 535         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 536                 [super_operations.evict_inode() is exist in kernel])
 537 ])
 538 ]) # LC_SBOPS_EVICT_INODE
 539
 540 #
 541 # LC_FILE_FSYNC
 542 #
 543 # 2.6.35 file_operations.fsync taken 2 arguments.
 544 # 3.0.0 file_operations.fsync takes 4 arguments.
 545 #
 546 AC_DEFUN([LC_FILE_FSYNC], [
 547 LB_CHECK_COMPILE([if 'file_operations.fsync' takes 4 arguments],
 548 file_ops_fsync_4args, [
 549         #include <linux/fs.h>
 550 ],[
 551         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 552 ],[
 553         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 554                 [file_operations.fsync takes 4 arguments])
 555 ],[
 556         LB_CHECK_COMPILE([if 'file_operations.fsync' takes 2 arguments],
 557         file_ops_fsync_2args, [
 558                 #include <linux/fs.h>
 559         ],[
 560                 ((struct file_operations *)0)->fsync(NULL, 0);
 561         ],[
 562                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 563                         [file_operations.fsync takes 2 arguments])
 564         ])
 565 ])
 566 ]) # LC_FILE_FSYNC
 567
 568 #
 569 # LC_KERNEL_LOCKED
 570 #
 571 # 2.6.37 remove kernel_locked
 572 #
 573 AC_DEFUN([LC_KERNEL_LOCKED], [
 574 LB_CHECK_COMPILE([if 'kernel_locked' is defined],
 575 kernel_locked, [
 576         #include <linux/smp_lock.h>
 577 ],[
 578         kernel_locked();
 579 ],[
 580         AC_DEFINE(HAVE_KERNEL_LOCKED, 1, [kernel_locked is defined])
 581 ])
 582 ]) # LC_KERNEL_LOCKED
 583
 584 #
 585 # LC_FS_STRUCT_SEQCOUNT
 586 #
 587 # 2.6.37 uses seqlock in fs_struct
 588 #
 589 AC_DEFUN([LC_FS_STRUCT_SEQCOUNT], [
 590 LB_CHECK_COMPILE([if fs_struct use seqcount],
 591 fs_struct_seqcount, [
 592         #include <linux/fs_struct.h>
 593 ],[
 594         ((struct fs_struct *)0)->seq = (struct seqcount){ 0 };
 595 ],[
 596         AC_DEFINE(HAVE_FS_STRUCT_SEQCOUNT, 1, [fs_struct use seqcount])
 597 ])
 598 ]) # LC_FS_STRUCT_SEQCOUNT
 599
 600 #
 601 # LC_D_COMPARE_7ARGS
 602 #
 603 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 604 #
 605 AC_DEFUN([LC_D_COMPARE_7ARGS], [
 606 LB_CHECK_COMPILE([if 'dentry_operations.d_compare()' taken 7 arguments],
 607 dentry_ops_d_compare_7arg, [
 608         #include <linux/dcache.h>
 609 ],[
 610         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 611 ],[
 612         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1, [d_compare need 7 arguments])
 613 ])
 614 ]) # LC_D_COMPARE_7ARGS
 615
 616 #
 617 # LC_D_DELETE_CONST
 618 #
 619 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 620 #
 621 AC_DEFUN([LC_D_DELETE_CONST], [
 622 tmp_flags="$EXTRA_KCFLAGS"
 623 EXTRA_KCFLAGS="-Werror"
 624 LB_CHECK_COMPILE([if 'dentry_operations.d_delete()' has const declare on first parameter],
 625 dentry_ops_d_delete_1st_const, [
 626         #include <linux/dcache.h>
 627 ],[
 628         const struct dentry *d = NULL;
 629         ((struct dentry_operations*)0)->d_delete(d);
 630 ],[
 631         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 632                 [d_delete first parameter declared const])
 633 ],[
 634         AC_DEFINE(HAVE_D_DELETE_CONST, [],
 635                 [d_delete first parameter declared is not const])
 636 ])
 637 EXTRA_KCFLAGS="$tmp_flags"
 638 ]) # LC_D_DELETE_CONST
 639
 640 #
 641 # LC_DCACHE_LOCK
 642 #
 643 # 2.6.38 dcache_lock removed. rcu-walk committed.
 644 #
 645 AC_DEFUN([LC_DCACHE_LOCK], [
 646 LB_CHECK_COMPILE([if 'dcache_lock' is exist],
 647 dcache_lock, [
 648         #include <linux/dcache.h>
 649 ],[
 650         spin_lock(&dcache_lock);
 651 ],[
 652         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 653                 [dcache_lock is exist])
 654 ])
 655 ]) # LC_DCACHE_LOCK
 656
 657 #
 658 # LC_INODE_I_RCU
 659 #
 660 # 2.6.38 inode.i_rcu added.
 661 #
 662 AC_DEFUN([LC_INODE_I_RCU], [
 663 LB_CHECK_COMPILE([if 'inode.i_rcu' exists],
 664 inode_i_rcu, [
 665         #include <linux/fs.h>
 666 ],[
 667         struct inode ino;
 668         struct rcu_head rcu = {};
 669         ino.i_rcu = rcu;
 670 ],[
 671         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 672                 [inode.i_rcu exists])
 673 ])
 674 ]) # LC_INODE_I_RCU
 675
 676 #
 677 # LC_BLKDEV_GET_BY_DEV
 678 #
 679 # 2.6.38 export blkdev_get_by_dev
 680 #
 681 AC_DEFUN([LC_BLKDEV_GET_BY_DEV], [
 682 LB_CHECK_EXPORT([blkdev_get_by_dev], [fs/block_dev.c],
 683         [AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 684                 [blkdev_get_by_dev is exported by the kernel])])
 685 ]) # LC_BLKDEV_GET_BY_DEV
 686
 687 #
 688 # LC_EXPORT_SIMPLE_SETATTR
 689 #
 690 # 2.6.38 export simple_setattr
 691 #
 692 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR], [
 693 LB_CHECK_EXPORT([simple_setattr], [fs/libfs.c],
 694         [AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 695                 [simple_setattr is exported by the kernel])])
 696 ]) # LC_EXPORT_SIMPLE_SETATTR
 697
 698 #
 699 # LC_HAVE_BLK_PLUG
 700 #
 701 # 2.6.38 add struct blk_plug
 702 #
 703 AC_DEFUN([LC_HAVE_BLK_PLUG], [
 704 LB_CHECK_COMPILE([if 'struct blk_plug' exists],
 705 blk_plug, [
 706         #include <linux/blkdev.h>
 707 ],[
 708         struct blk_plug plug;
 709
 710         blk_start_plug(&plug);
 711         blk_finish_plug(&plug);
 712 ],[
 713         AC_DEFINE(HAVE_BLK_PLUG, 1,
 714                 [blk_plug struct exists])
 715 ])
 716 ]) # LC_HAVE_BLK_PLUG
 717
 718 #
 719 # LC_IOP_TRUNCATE
 720 #
 721 # truncate callback removed since 2.6.39
 722 #
 723 AC_DEFUN([LC_IOP_TRUNCATE], [
 724 LB_CHECK_COMPILE([if 'inode_operations' has '.truncate' member function],
 725 inode_ops_truncate, [
 726         #include <linux/fs.h>
 727 ],[
 728         ((struct inode_operations *)0)->truncate(NULL);
 729 ],[
 730         AC_DEFINE(HAVE_INODEOPS_TRUNCATE, 1,
 731                 [inode_operations has .truncate member function])
 732 ])
 733 ]) # LC_IOP_TRUNCATE
 734
 735 #
 736 # LC_HAVE_FSTYPE_MOUNT
 737 #
 738 # 2.6.39 replace get_sb with mount in struct file_system_type
 739 #
 740 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT], [
 741 LB_CHECK_COMPILE([if 'file_system_type' has 'mount' field],
 742 file_system_type_mount, [
 743         #include <linux/fs.h>
 744 ],[
 745         struct file_system_type fst = { };
 746         void *mount;
 747
 748         mount = (void *)fst.mount;
 749 ],[
 750         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 751                 [struct file_system_type has mount field])
 752 ])
 753 ]) # LC_HAVE_FSTYPE_MOUNT
 754
 755 #
 756 # LC_HAVE_FHANDLE_SYSCALLS
 757 #
 758 # 2.6.39 The open_by_handle_at() and name_to_handle_at() system calls were
 759 # added to Linux kernel 2.6.39.
 760 # Check if client supports these functions
 761 #
 762 AC_DEFUN([LC_HAVE_FHANDLE_SYSCALLS], [
 763 LB_CHECK_CONFIG_IM([FHANDLE],[
 764         AC_DEFINE(HAVE_FHANDLE_SYSCALLS, 1,
 765                 [kernel supports fhandles and related syscalls])
 766         ])
 767 ]) # LC_HAVE_FHANDLE_SYSCALLS
 768
 769 #
 770 # LC_HAVE_INODE_OWNER_OR_CAPABLE
 771 #
 772 # 2.6.39 renames is_owner_or_cap to inode_owner_or_capable
 773 #
 774 AC_DEFUN([LC_HAVE_INODE_OWNER_OR_CAPABLE], [
 775 LB_CHECK_COMPILE([if 'inode_owner_or_capable' exist],
 776 inode_owner_or_capable, [
 777         #include <linux/fs.h>
 778 ],[
 779         inode_owner_or_capable(NULL);
 780 ],[
 781         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
 782                 [inode_owner_or_capable exist])
 783 ])
 784 ]) # LC_HAVE_INODE_OWNER_OR_CAPABLE
 785
 786 #
 787 # LC_DIRTY_INODE_WITH_FLAG
 788 #
 789 # 3.0 dirty_inode() has a flag parameter
 790 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 791 #
 792 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG], [
 793 LB_CHECK_COMPILE([if 'dirty_inode' super_operation takes flag],
 794 dirty_inode_super_operation_flag, [
 795         #include <linux/fs.h>
 796 ],[
 797         struct inode *inode = NULL;
 798         inode->i_sb->s_op->dirty_inode(NULL, 0);
 799 ],[
 800         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 801                 [dirty_inode super_operation takes flag])
 802 ])
 803 ]) # LC_DIRTY_INODE_WITH_FLAG
 804
 805 #
 806 # LC_SETNS
 807 #
 808 # 3.0 introduced setns
 809 #
 810 AC_DEFUN([LC_SETNS], [
 811 AC_CHECK_HEADERS([sched.h], [], [],
 812                  [#define _GNU_SOURCE
 813                  ])
 814 AC_CHECK_FUNCS([setns])
 815 ]) # LC_SETNS
 816
 817 #
 818 # LC_GENERIC_PERMISSION
 819 #
 820 # 2.6.38 generic_permission taken 4 parameters.
 821 # in fact, it means rcu-walk aware permission bring.
 822 #
 823 # 3.1 generic_permission taken 2 parameters.
 824 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 825 #
 826 AC_DEFUN([LC_GENERIC_PERMISSION], [
 827 LB_CHECK_COMPILE([if 'generic_permission' take 2 arguments],
 828 generic_permission_2args, [
 829         #include <linux/fs.h>
 830 ],[
 831         generic_permission(NULL, 0);
 832 ],[
 833         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 834                 [generic_permission taken 2 arguments])
 835 ],[
 836         LB_CHECK_COMPILE([if 'generic_permission' take 4 arguments],
 837         generic_permission_4args, [
 838                 #include <linux/fs.h>
 839         ],[
 840                 generic_permission(NULL, 0, 0, NULL);
 841         ],[
 842                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 843                         [generic_permission taken 4 arguments])
 844         ])
 845 ])
 846 ]) # LC_GENERIC_PERMISSION
 847
 848 #
 849 # LC_LM_XXX_LOCK_MANAGER_OPS
 850 #
 851 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 852 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 853 #
 854 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS], [
 855 LB_CHECK_COMPILE([if 'lock-manager' ops renamed to 'lm_xxx'],
 856 lock_manager_ops_lm_xxx, [
 857         #include <linux/fs.h>
 858 ],[
 859         struct lock_manager_operations lm_ops;
 860         lm_ops.lm_compare_owner = NULL;
 861 ],[
 862         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 863                 [lock-manager ops renamed to lm_xxx])
 864 ])
 865 ]) # LC_LM_XXX_LOCK_MANAGER_OPS
 866
 867 #
 868 # LC_INODE_DIO_WAIT
 869 #
 870 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait
 871 #     instead.
 872 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 873 #
 874 AC_DEFUN([LC_INODE_DIO_WAIT], [
 875 LB_CHECK_COMPILE([if 'inode->i_alloc_sem' is killed and use inode_dio_wait],
 876 inode_dio_wait, [
 877         #include <linux/fs.h>
 878 ],[
 879         inode_dio_wait((struct inode *)0);
 880 ],[
 881         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 882                 [inode->i_alloc_sem is killed and use inode_dio_wait])
 883 ])
 884 ]) # LC_INODE_DIO_WAIT
 885
 886 #
 887 # LC_IOP_GET_ACL
 888 #
 889 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 890 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 891 #
 892 AC_DEFUN([LC_IOP_GET_ACL], [
 893 LB_CHECK_COMPILE([if 'inode_operations' has '.get_acl' member function],
 894 inode_ops_get_acl, [
 895         #include <linux/fs.h>
 896 ],[
 897         struct inode_operations iop;
 898         iop.get_acl = NULL;
 899 ],[
 900         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 901                 [inode_operations has .get_acl member function])
 902 ])
 903 ]) # LC_IOP_GET_ACL
 904
 905 #
 906 # LC_FILE_LLSEEK_SIZE
 907 #
 908 # 3.1 introduced generic_file_llseek_size()
 909 #
 910 AC_DEFUN([LC_FILE_LLSEEK_SIZE], [
 911 LB_CHECK_EXPORT([generic_file_llseek_size], [fs/read_write.c],
 912         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 913                 [generic_file_llseek_size is exported by the kernel])])
 914 ]) # LC_FILE_LLSEEK_SIZE
 915
 916 #
 917 # LC_RADIX_EXCEPTION_ENTRY
 918 # 3.1 adds radix_tree_exception_entry.
 919 #
 920 AC_DEFUN([LC_RADIX_EXCEPTION_ENTRY], [
 921 LB_CHECK_COMPILE([radix_tree_exceptional_entry exist],
 922 radix_tree_exceptional_entry, [
 923         #include <linux/radix-tree.h>
 924 ],[
 925         radix_tree_exceptional_entry(NULL);
 926 ],[
 927         AC_DEFINE(HAVE_RADIX_EXCEPTION_ENTRY, 1,
 928                 [radix_tree_exceptional_entry exist])
 929 ])
 930 ]) # LC_RADIX_EXCEPTION_ENTRY
 931
 932 #
 933 # LC_HAVE_PROTECT_I_NLINK
 934 #
 935 # 3.2 protects inode->i_nlink from direct modification
 936 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 937 # at the same time adds set_nlink(), so checks set_nlink() for it.
 938 #
 939 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK], [
 940 LB_CHECK_COMPILE([if 'inode->i_nlink' is protected from direct modification],
 941 inode_i_nlink_protected, [
 942         #include <linux/fs.h>
 943 ],[
 944         struct inode i;
 945         set_nlink(&i, 1);
 946 ],[
 947         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 948                 [inode->i_nlink is protected from direct modification])
 949 ])
 950 ]) # LC_HAVE_PROTECT_I_NLINK
 951
 952 #
 953 # 2.6.39 security_inode_init_security takes a 'struct qstr' parameter
 954 #
 955 # 3.2 security_inode_init_security takes a callback to set xattrs
 956 #
 957 AC_DEFUN([LC_HAVE_SECURITY_IINITSEC], [
 958 LB_CHECK_COMPILE([if security_inode_init_security takes a callback],
 959 security_inode_init_security_callback, [
 960         #include <linux/security.h>
 961 ],[
 962         security_inode_init_security(NULL, NULL, NULL, (const initxattrs)NULL, NULL);
 963 ],[
 964         AC_DEFINE(HAVE_SECURITY_IINITSEC_CALLBACK, 1,
 965                   [security_inode_init_security takes a callback to set xattrs])
 966 ],[
 967         LB_CHECK_COMPILE([if security_inode_init_security takes a 'struct qstr' parameter],
 968         security_inode_init_security_qstr, [
 969                 #include <linux/security.h>
 970         ],[
 971                 security_inode_init_security(NULL, NULL, (struct qstr *)NULL, NULL, NULL, NULL);
 972         ],[
 973                 AC_DEFINE(HAVE_SECURITY_IINITSEC_QSTR, 1,
 974                           [security_inode_init_security takes a 'struct qstr' parameter])
 975         ])
 976 ])
 977 ]) # LC_HAVE_SECURITY_IINITSEC
 978
 979 #
 980 # LC_HAVE_MIGRATE_HEADER
 981 #
 982 # 3.3 introduces migrate_mode.h and migratepage has 4 args
 983 #
 984 AC_DEFUN([LC_HAVE_MIGRATE_HEADER], [
 985 LB_CHECK_FILE([$LINUX/include/linux/migrate.h], [
 986         AC_DEFINE(HAVE_MIGRATE_H, 1,
 987                 [kernel has include/linux/migrate.h])
 988 ],[
 989         LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h], [
 990                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
 991                         [kernel has include/linux/migrate_mode.h])
 992         ])
 993 ])
 994 ]) # LC_HAVE_MIGRATE_HEADER
 995
 996 #
 997 # LC_MIGRATEPAGE_4ARGS
 998 #
 999 AC_DEFUN([LC_MIGRATEPAGE_4ARGS], [
1000 LB_CHECK_COMPILE([if 'address_space_operations.migratepage' has 4 args],
1001 address_space_ops_migratepage_4args, [
1002         #include <linux/fs.h>
1003 #ifdef HAVE_MIGRATE_H
1004         #include <linux/migrate.h>
1005 #elif defined(HAVE_MIGRATE_MODE_H)
1006         #include <linux/migrate_mode.h>
1007 #endif
1008 ],[
1009         struct address_space_operations aops = { };
1010         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
1011 ],[
1012         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
1013                 [address_space_operations.migratepage has 4 args])
1014 ])
1015 ]) # LC_MIGRATEPAGE_4ARGS
1016
1017 #
1018 # LC_SUPEROPS_USE_DENTRY
1019 #
1020 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1021 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1022 #
1023 AC_DEFUN([LC_SUPEROPS_USE_DENTRY], [
1024 tmp_flags="$EXTRA_KCFLAGS"
1025 EXTRA_KCFLAGS="-Werror"
1026 LB_CHECK_COMPILE([if 'super_operations' use 'dentry' as parameter],
1027 super_ops_dentry, [
1028         #include <linux/fs.h>
1029         int show_options(struct seq_file *seq, struct dentry *root) {
1030                 return 0;
1031         }
1032 ],[
1033         struct super_operations ops;
1034         ops.show_options = show_options;
1035 ],[
1036         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1037                 [super_operations use dentry as parameter])
1038 ])
1039 EXTRA_KCFLAGS="$tmp_flags"
1040 ]) # LC_SUPEROPS_USE_DENTRY
1041
1042 #
1043 # LC_INODEOPS_USE_UMODE_T
1044 #
1045 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1046 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1047 #
1048 AC_DEFUN([LC_INODEOPS_USE_UMODE_T], [
1049 tmp_flags="$EXTRA_KCFLAGS"
1050 EXTRA_KCFLAGS="-Werror"
1051 LB_CHECK_COMPILE([if 'inode_operations' use 'umode_t' as parameter],
1052 inode_ops_umode_t, [
1053         #include <linux/fs.h>
1054         #include <linux/types.h>
1055         int my_mknod(struct inode *dir, struct dentry *dchild,
1056                      umode_t mode, dev_t dev)
1057         {
1058                 return 0;
1059         }
1060 ],[
1061         struct inode_operations ops;
1062         ops.mknod = my_mknod;
1063 ],[
1064         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1065                 [inode_operations use umode_t as parameter])
1066 ])
1067 EXTRA_KCFLAGS="$tmp_flags"
1068 ]) # LC_INODEOPS_USE_UMODE_T
1069
1070 #
1071 # LC_KMAP_ATOMIC_HAS_1ARG
1072 #
1073 # 3.4 kmap_atomic removes second argument
1074 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1075 #
1076 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG], [
1077 LB_CHECK_COMPILE([if 'kmap_atomic' has only 1 argument],
1078 kmap_atomic_1arg, [
1079         #include <linux/highmem.h>
1080 ],[
1081         kmap_atomic(NULL);
1082 ],[
1083         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1084                 [have kmap_atomic has only 1 argument])
1085 ])
1086 ]) # LC_KMAP_ATOMIC_HAS_1ARG
1087
1088 #
1089 # LC_HAVE_D_MAKE_ROOT
1090 #
1091 # 3.4 converts d_alloc_root to d_make_root
1092 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1093 #
1094 AC_DEFUN([LC_HAVE_D_MAKE_ROOT], [
1095 LB_CHECK_COMPILE([if have 'd_make_root'],
1096 d_make_root, [
1097         #include <linux/fs.h>
1098 ],[
1099         d_make_root((struct inode *)NULL);
1100 ],[
1101         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1102                 [have d_make_root])
1103 ])
1104 ]) # LC_HAVE_D_MAKE_ROOT
1105
1106 #
1107 # LC_HAVE_CACHE_REGISTER
1108 #
1109 # 3.4 cache_register/cache_unregister are removed
1110 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1111 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1112 # are defined, but not exported.
1113 # 3.3 cache_register_net/cache_unregister_net are
1114 # exported and replacing cache_register/cache_unregister in 3.4
1115 #
1116 AC_DEFUN([LC_HAVE_CACHE_REGISTER], [
1117 LB_CHECK_COMPILE([if have 'cache_register'],
1118 cache_register, [
1119         #include <linux/sunrpc/cache.h>
1120 ],[
1121         cache_register(NULL);
1122 ],[
1123         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1124                 [have cache_register])
1125 ])
1126 ]) # LC_HAVE_CACHE_REGISTER
1127
1128 #
1129 # LC_HAVE_CLEAR_INODE
1130 #
1131 # 3.5 renames end_writeback() back to clear_inode()...
1132 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1133 #
1134 AC_DEFUN([LC_HAVE_CLEAR_INODE], [
1135 LB_CHECK_COMPILE([if have 'clear_inode'],
1136 clear_inode, [
1137         #include <linux/fs.h>
1138 ],[
1139         clear_inode((struct inode *)NULL);
1140 ],[
1141         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1142                 [have clear_inode])
1143 ])
1144 ]) # LC_HAVE_CLEAR_INODE
1145
1146 #
1147 # LC_HAVE_ENCODE_FH_PARENT
1148 #
1149 # 3.5 encode_fh has parent inode passed in directly
1150 # see kernel commit b0b0382b
1151 #
1152 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT], [
1153 tmp_flags="$EXTRA_KCFLAGS"
1154 EXTRA_KCFLAGS="-Werror"
1155 LB_CHECK_COMPILE([if 'encode_fh' have parent inode as parameter],
1156 encode_fh_parent_inode, [
1157         #include <linux/exportfs.h>
1158         #include <linux/fs.h>
1159         #include <linux/types.h>
1160         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1161         {
1162                 return 0;
1163         }
1164 ],[
1165         struct export_operations exp_op;
1166         exp_op.encode_fh = ll_encode_fh;
1167 ],[
1168         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1169                 [have parent inode as parameter])
1170 ])
1171 EXTRA_KCFLAGS="$tmp_flags"
1172 ]) # LC_HAVE_ENCODE_FH_PARENT
1173
1174 #
1175 # LC_FILE_LLSEEK_SIZE_5ARG
1176 #
1177 # 3.5 has generic_file_llseek_size with 5 args
1178 #
1179 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG], [
1180 LB_CHECK_COMPILE([if Linux kernel has 'generic_file_llseek_size' with 5 args],
1181 generic_file_llseek_size_5args, [
1182         #include <linux/fs.h>
1183 ],[
1184         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1185 ], [
1186         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1187                 [kernel has generic_file_llseek_size with 5 args])
1188 ])
1189 ]) # LC_FILE_LLSEEK_SIZE_5ARG
1190
1191 #
1192 # LC_LLITE_DATA_IS_LIST
1193 #
1194 # 3.6 switch i_dentry/d_alias from list to hlist
1195 #
1196 # In the upstream kernels d_alias first changes
1197 # to a hlist and then in later version, 3.11, gets
1198 # moved to the union d_u. Due to some distros having
1199 # d_alias in the d_u union as a struct list, which
1200 # has never existed upstream stream, we can't test
1201 # if d_alias is a list or hlist directly. If ever
1202 # i_dentry and d_alias even up different combos then
1203 # the build will fail. In that case then we will need
1204 # to separate out the i_dentry and d_alias test below.
1205 #
1206 AC_DEFUN([LC_DATA_FOR_LLITE_IS_LIST], [
1207 tmp_flags="$EXTRA_KCFLAGS"
1208 EXTRA_KCFLAGS="-Werror"
1209 LB_CHECK_COMPILE([if 'i_dentry/d_alias' uses 'list'],
1210 i_dentry_d_alias_list, [
1211         #include <linux/fs.h>
1212 ],[
1213         struct inode inode;
1214         INIT_LIST_HEAD(&inode.i_dentry);
1215 ],[
1216         AC_DEFINE(DATA_FOR_LLITE_IS_LIST, 1,
1217                 [both i_dentry/d_alias uses list])
1218 ])
1219 EXTRA_KCFLAGS="$tmp_flags"
1220 ]) # LC_DATA_FOR_LLITE_IS_LIST
1221
1222 #
1223 # LC_DENTRY_OPEN_USE_PATH
1224 #
1225 # 3.6 dentry_open uses struct path as first argument
1226 # see kernel commit 765927b2
1227 #
1228 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH], [
1229 tmp_flags="$EXTRA_KCFLAGS"
1230 EXTRA_KCFLAGS="-Werror"
1231 LB_CHECK_COMPILE([if 'dentry_open' uses 'struct path' as first argument],
1232 dentry_open_path, [
1233         #include <linux/fs.h>
1234         #include <linux/path.h>
1235 ],[
1236         struct path path;
1237         dentry_open(&path, 0, NULL);
1238 ],[
1239         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1240                 [dentry_open uses struct path as first argument])
1241 ])
1242 EXTRA_KCFLAGS="$tmp_flags"
1243 ]) # LC_DENTRY_OPEN_USE_PATH
1244
1245 #
1246 # LC_HAVE_IOP_ATOMIC_OPEN
1247 #
1248 # 3.6 vfs adds iop->atomic_open
1249 #
1250 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN], [
1251 LB_CHECK_COMPILE([if 'iop' has 'atomic_open'],
1252 inode_ops_atomic_open, [
1253         #include <linux/fs.h>
1254 ],[
1255         struct inode_operations iop;
1256         iop.atomic_open = NULL;
1257 ],[
1258         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1259                 [have iop atomic_open])
1260 ])
1261 ]) # LC_HAVE_IOP_ATOMIC_OPEN
1262
1263 #
1264 # LC_HAVE_SB_START_WRITE
1265 #
1266 # RHEL6 2.6.32, 3.6 or newer support wrapped FS freeze functions
1267 #
1268 AC_DEFUN([LC_HAVE_SB_START_WRITE], [
1269 LB_CHECK_COMPILE([if kernel supports wrapped FS freeze functions],
1270 sb_start_write, [
1271         #include <linux/fs.h>
1272 ],[
1273         sb_start_write(NULL);
1274 ],[
1275         AC_DEFINE(HAVE_SB_START_WRITE, 1,
1276                 [kernel supports wrapped FS freeze functions])
1277 ])
1278 ]) # LC_HAVE_SB_START_WRITE
1279
1280 #
1281 # LC_HAVE_POSIXACL_USER_NS
1282 #
1283 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1284 #
1285 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS], [
1286 LB_CHECK_COMPILE([if 'posix_acl_to_xattr' takes 'struct user_namespace'],
1287 posix_acl_to_xattr_user_namespace, [
1288         #include <linux/fs.h>
1289         #include <linux/posix_acl_xattr.h>
1290 ],[
1291         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1292 ],[
1293         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1294                 [posix_acl_to_xattr takes struct user_namespace])
1295 ])
1296 ]) # LC_HAVE_POSIXACL_USER_NS
1297
1298 #
1299 # LC_HAVE_FILE_F_INODE
1300 #
1301 # 3.8 struct file has new member f_inode
1302 #
1303 AC_DEFUN([LC_HAVE_FILE_F_INODE], [
1304 LB_CHECK_COMPILE([if 'struct file' has member 'f_inode'],
1305 file_f_inode, [
1306         #include <linux/fs.h>
1307 ],[
1308         ((struct file *)0)->f_inode = NULL;
1309 ],[
1310         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1311                 [struct file has member f_inode])
1312 ])
1313 ]) # LC_HAVE_FILE_F_INODE
1314
1315 #
1316 # LC_HAVE_FILE_INODE
1317 #
1318 # 3.8 has introduced inline function file_inode
1319 #
1320 AC_DEFUN([LC_HAVE_FILE_INODE], [
1321 LB_CHECK_COMPILE([if file_inode() exists],
1322 file_inode, [
1323         #include <linux/fs.h>
1324 ],[
1325         file_inode(NULL);
1326 ],[
1327         AC_DEFINE(HAVE_FILE_INODE, 1,
1328                 [file_inode() has been defined])
1329 ])
1330 ]) # LC_HAVE_FILE_INODE
1331
1332 #
1333 # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1334 #
1335 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS], [
1336 LB_CHECK_COMPILE([if 'sunrpc_cache_pipe_upcall' takes 3 args],
1337 sunrpc_cache_pipe_upcall_3args, [
1338         #include <linux/sunrpc/cache.h>
1339 ],[
1340         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1341 ],[
1342         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1343                 [sunrpc_cache_pipe_upcall takes 3 args])
1344 ])
1345 ]) # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1346
1347 #
1348 # LC_HAVE_HLIST_FOR_EACH_3ARG
1349 #
1350 # 3.9 uses hlist_for_each_entry with 3 args
1351 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1352 #
1353 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG], [
1354 LB_CHECK_COMPILE([if 'hlist_for_each_entry' has 3 args],
1355 hlist_for_each_entry_3args, [
1356         #include <linux/list.h>
1357         #include <linux/fs.h>
1358 ],[
1359         struct hlist_head *head = NULL;
1360         struct inode *inode;
1361
1362         hlist_for_each_entry(inode, head, i_hash) {
1363                 continue;
1364         }
1365 ],[
1366         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1,
1367                 [hlist_for_each_entry has 3 args])
1368 ])
1369 ]) # LC_HAVE_HLIST_FOR_EACH_3ARG
1370
1371 #
1372 # LC_HAVE_BIO_END_SECTOR
1373 #
1374 # 3.9 introduces bio_end_sector macro
1375 # f73a1c7d117d07a96d89475066188a2b79e53c48
1376 #
1377 AC_DEFUN([LC_HAVE_BIO_END_SECTOR], [
1378 LB_CHECK_COMPILE([if 'bio_end_sector' is defined],
1379 bio_end_sector, [
1380         #include <linux/bio.h>
1381 ],[
1382         struct bio bio = { };
1383         unsigned long long end;
1384
1385         end = bio_end_sector(&bio);
1386 ],[
1387         AC_DEFINE(HAVE_BIO_END_SECTOR, 1,
1388                   [bio_end_sector is defined])
1389 ])
1390 ]) # LC_HAVE_BIO_END_SECTOR
1391
1392 #
1393 # 3.9 created is_sxid
1394 #
1395 AC_DEFUN([LC_HAVE_IS_SXID], [
1396 LB_CHECK_COMPILE([if 'is_sxid' is defined],
1397 is_sxid, [
1398         #include <linux/fs.h>
1399 ],[
1400         struct inode inode = { };
1401
1402         is_sxid(inode.i_mode);
1403 ],[
1404         AC_DEFINE(HAVE_IS_SXID, 1, [is_sxid is defined])
1405 ])
1406 ]) # LC_HAVE_IS_SXID
1407
1408 #
1409 # LC_HAVE_REMOVE_PROC_SUBTREE
1410 #
1411 # 3.10 introduced remove_proc_subtree
1412 #
1413 AC_DEFUN([LC_HAVE_REMOVE_PROC_SUBTREE], [
1414 LB_CHECK_COMPILE([if 'remove_proc_subtree' is defined],
1415 remove_proc_subtree, [
1416         #include <linux/proc_fs.h>
1417 ],[
1418         remove_proc_subtree(NULL, NULL);
1419 ], [
1420         AC_DEFINE(HAVE_REMOVE_PROC_SUBTREE, 1,
1421                   [remove_proc_subtree is defined])
1422 ])
1423 ]) # LC_HAVE_REMOVE_PROC_SUBTREE
1424
1425 #
1426 # LC_HAVE_PROC_REMOVE
1427 #
1428 # 3.10 introduced proc_remove
1429 #
1430 AC_DEFUN([LC_HAVE_PROC_REMOVE], [
1431 LB_CHECK_COMPILE([if 'proc_remove' is defined],
1432 proc_remove, [
1433         #include <linux/proc_fs.h>
1434 ],[
1435         proc_remove(NULL);
1436 ], [
1437         AC_DEFINE(HAVE_PROC_REMOVE, 1,
1438                   [proc_remove is defined])
1439 ])
1440 ]) # LC_HAVE_PROC_REMOVE
1441
1442 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
1443 LB_CHECK_COMPILE([if get_projid exists],
1444 get_projid, [
1445         struct inode;
1446         #include <linux/quota.h>
1447 ],[
1448         struct dquot_operations ops = { };
1449
1450         ops.get_projid(NULL, NULL);
1451 ],[
1452         AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
1453                 [get_projid function exists])
1454 ])
1455 ]) # LC_HAVE_PROJECT_QUOTA
1456
1457
1458 #
1459 # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1460 #
1461 # 3.10 introduced security_dentry_init_security()
1462 #
1463 AC_DEFUN([LC_HAVE_SECURITY_DENTRY_INIT_SECURITY], [
1464 LB_CHECK_COMPILE([if 'security_dentry_init_security' is defined],
1465 security_dentry_init_security, [
1466         #include <linux/security.h>
1467 ],[
1468         security_dentry_init_security(NULL, 0, NULL, NULL, NULL);
1469 ],[
1470         AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_SECURITY, 1,
1471                 [security_dentry_init_security' is defined])
1472 ])
1473 ]) # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1474
1475 #
1476 # LC_INVALIDATE_RANGE
1477 #
1478 # 3.11 invalidatepage requires the length of the range to invalidate
1479 #
1480 AC_DEFUN([LC_INVALIDATE_RANGE], [
1481 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
1482 address_space_ops_invalidatepage_3args, [
1483         #include <linux/fs.h>
1484 ],[
1485         struct address_space_operations a_ops;
1486         a_ops.invalidatepage(NULL, 0, 0);
1487 ],[
1488         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
1489                 [address_space_operations.invalidatepage needs 3 arguments])
1490 ])
1491 ]) # LC_INVALIDATE_RANGE
1492
1493 #
1494 # LC_HAVE_DIR_CONTEXT
1495 #
1496 # 3.11 readdir now takes the new struct dir_context
1497 #
1498 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
1499 LB_CHECK_COMPILE([if 'dir_context' exist],
1500 dir_context, [
1501         #include <linux/fs.h>
1502 ],[
1503 #ifdef FMODE_KABI_ITERATE
1504 #error "back to use readdir in kabi_extand mode"
1505 #else
1506         struct dir_context ctx;
1507
1508         ctx.pos = 0;
1509 #endif
1510 ],[
1511         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
1512                 [dir_context exist])
1513 ])
1514 ]) # LC_HAVE_DIR_CONTEXT
1515
1516 #
1517 # LC_D_COMPARE_5ARGS
1518 #
1519 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1520 #
1521 AC_DEFUN([LC_D_COMPARE_5ARGS], [
1522 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
1523 d_compare_5args, [
1524         #include <linux/dcache.h>
1525 ],[
1526         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1527 ],[
1528         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1529                 [d_compare need 5 arguments])
1530 ])
1531 ]) # LC_D_COMPARE_5ARGS
1532
1533 #
1534 # LC_HAVE_DCOUNT
1535 #
1536 # 3.11 need to access d_count to get dentry reference count
1537 #
1538 AC_DEFUN([LC_HAVE_DCOUNT], [
1539 LB_CHECK_COMPILE([if 'd_count' exists],
1540 d_count, [
1541         #include <linux/dcache.h>
1542 ],[
1543         struct dentry de = { };
1544         int count;
1545
1546         count = d_count(&de);
1547 ],[
1548         AC_DEFINE(HAVE_D_COUNT, 1,
1549                 [d_count exist])
1550 ])
1551 ]) # LC_HAVE_DCOUNT
1552
1553 #
1554 # LC_PID_NS_FOR_CHILDREN
1555 #
1556 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
1557 #
1558 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
1559 LB_CHECK_COMPILE([if 'struct nsproxy' has 'pid_ns_for_children'],
1560 pid_ns_for_children, [
1561         #include <linux/nsproxy.h>
1562 ],[
1563         struct nsproxy ns;
1564         ns.pid_ns_for_children = NULL;
1565 ],[
1566         AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
1567                   ['struct nsproxy' has 'pid_ns_for_children'])
1568 ])
1569 ]) # LC_PID_NS_FOR_CHILDREN
1570
1571 #
1572 # LC_OLDSIZE_TRUNCATE_PAGECACHE
1573 #
1574 # 3.12 truncate_pagecache without oldsize parameter
1575 #
1576 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
1577 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
1578 truncate_pagecache_old_size, [
1579         #include <linux/mm.h>
1580 ],[
1581         truncate_pagecache(NULL, 0, 0);
1582 ],[
1583         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
1584                 [with oldsize])
1585 ])
1586 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
1587
1588 #
1589 # LC_PTR_ERR_OR_ZERO
1590 #
1591 # For some reason SLES11SP4 is missing the PTR_ERR_OR_ZERO macro
1592 # It was added to linux kernel 3.12
1593 #
1594 AC_DEFUN([LC_PTR_ERR_OR_ZERO_MISSING], [
1595 LB_CHECK_COMPILE([if 'PTR_ERR_OR_ZERO' is missing],
1596 is_err_or_null, [
1597         #include <linux/err.h>
1598 ],[
1599         if (PTR_ERR_OR_ZERO(NULL)) return 0;
1600 ],[
1601         AC_DEFINE(HAVE_PTR_ERR_OR_ZERO, 1,
1602                 ['PTR_ERR_OR_ZERO' exist])
1603 ])
1604 ]) # LC_PTR_ERR_OR_ZERO_MISSING
1605
1606 #
1607 # LC_HAVE_DENTRY_D_U_D_ALIAS
1608 #
1609 # 3.11 kernel moved d_alias to the union d_u in struct dentry
1610 #
1611 # Some distros move d_alias to d_u but it is still a struct list
1612 #
1613 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
1614 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
1615         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
1616         d_alias, [
1617                 #include <linux/list.h>
1618                 #include <linux/dcache.h>
1619         ],[
1620                 struct dentry de;
1621                 INIT_LIST_HEAD(&de.d_u.d_alias);
1622         ],[
1623                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1624                         [list dentry.d_u.d_alias exist])
1625         ])
1626 ],[
1627         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
1628         d_alias, [
1629                 #include <linux/list.h>
1630                 #include <linux/dcache.h>
1631         ],[
1632                 struct dentry de;
1633                 INIT_HLIST_NODE(&de.d_u.d_alias);
1634         ],[
1635                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1636                         [hlist dentry.d_u.d_alias exist])
1637         ])
1638 ])
1639 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
1640
1641 #
1642 # LC_HAVE_DENTRY_D_CHILD
1643 #
1644 # 3.11 kernel d_child has been moved out of the union d_u
1645 # in struct dentry
1646 #
1647 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
1648 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
1649 d_child, [
1650         #include <linux/list.h>
1651         #include <linux/dcache.h>
1652 ],[
1653         struct dentry de;
1654         INIT_LIST_HEAD(&de.d_child);
1655 ],[
1656         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
1657                 [dentry.d_child exist])
1658 ])
1659 ]) # LC_HAVE_DENTRY_D_CHILD
1660
1661 #
1662 # LC_KIOCB_KI_LEFT
1663 #
1664 # 3.12 ki_left removed from struct kiocb
1665 #
1666 AC_DEFUN([LC_KIOCB_KI_LEFT], [
1667 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
1668 kiocb_ki_left, [
1669         #include <linux/aio.h>
1670 ],[
1671         ((struct kiocb*)0)->ki_left = 0;
1672 ],[
1673         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
1674                 [ki_left exist])
1675 ])
1676 ]) # LC_KIOCB_KI_LEFT
1677
1678 #
1679 # LC_VFS_RENAME_5ARGS
1680 #
1681 # 3.13 has vfs_rename with 5 args
1682 #
1683 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
1684 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
1685 vfs_rename_5args, [
1686         #include <linux/fs.h>
1687 ],[
1688         vfs_rename(NULL, NULL, NULL, NULL, NULL);
1689 ], [
1690         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
1691                 [kernel has vfs_rename with 5 args])
1692 ])
1693 ]) # LC_VFS_RENAME_5ARGS
1694
1695 #
1696 # LC_VFS_UNLINK_3ARGS
1697 #
1698 # 3.13 has vfs_unlink with 3 args
1699 #
1700 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
1701 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
1702 vfs_unlink_3args, [
1703         #include <linux/fs.h>
1704 ],[
1705         vfs_unlink(NULL, NULL, NULL);
1706 ], [
1707         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
1708                 [kernel has vfs_unlink with 3 args])
1709 ])
1710 ]) # LC_VFS_UNLINK_3ARGS
1711
1712 #
1713 # LC_HAVE_BVEC_ITER
1714 #
1715 # 3.14 move some of its data in struct bio into the new
1716 # struct bvec_iter
1717 #
1718 AC_DEFUN([LC_HAVE_BVEC_ITER], [
1719 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
1720 have_bvec_iter, [
1721         #include <linux/bio.h>
1722 ],[
1723         struct bvec_iter iter;
1724
1725         iter.bi_bvec_done = 0;
1726 ], [
1727         AC_DEFINE(HAVE_BVEC_ITER, 1,
1728                 [kernel has struct bvec_iter])
1729 ])
1730 ]) # LC_HAVE_BVEC_ITER
1731
1732 #
1733 # LC_IOP_SET_ACL
1734 #
1735 # 3.14 adds set_acl method to inode_operations
1736 # see kernel commit 893d46e443346370cd4ea81d9d35f72952c62a37
1737 #
1738 AC_DEFUN([LC_IOP_SET_ACL], [
1739 LB_CHECK_COMPILE([if 'inode_operations' has '.set_acl' member function],
1740 inode_ops_set_acl, [
1741         #include <linux/fs.h>
1742 ],[
1743         struct inode_operations iop;
1744         iop.set_acl = NULL;
1745 ],[
1746         AC_DEFINE(HAVE_IOP_SET_ACL, 1,
1747                 [inode_operations has .set_acl member function])
1748 ])
1749 ]) # LC_IOP_SET_ACL
1750
1751 #
1752 # LC_HAVE_BI_CNT
1753 #
1754 # 4.4 redefined bi_cnt as __bi_cnt
1755 #
1756 AC_DEFUN([LC_HAVE_BI_CNT], [
1757 LB_CHECK_COMPILE([if Linux kernel has bi_cnt in struct bio],
1758 have_bi_cnt, [
1759         #include <asm/atomic.h>
1760         #include <linux/bio.h>
1761 ],[
1762         struct bio bio = { };
1763         int cnt;
1764         cnt = atomic_read(&bio.bi_cnt);
1765 ], [
1766         AC_DEFINE(HAVE_BI_CNT, 1,
1767                 [struct bio has bi_cnt])
1768 ])
1769 ]) # LC_HAVE_BI_CNT
1770
1771 #
1772 # LC_HAVE_BI_RW
1773 #
1774 # 4.4 redefined bi_rw as bi_opf
1775 #
1776 AC_DEFUN([LC_HAVE_BI_RW], [
1777 LB_CHECK_COMPILE([if Linux kernel has bi_rw in struct bio],
1778 have_bi_rw, [
1779         #include <linux/bio.h>
1780 ],[
1781         struct bio bio;
1782
1783         bio.bi_rw = 0;
1784 ], [
1785         AC_DEFINE(HAVE_BI_RW, 1,
1786                 [struct bio has bi_rw])
1787 ])
1788 ]) # LC_HAVE_BI_RW
1789
1790 #
1791 # LC_HAVE_SUBMIT_BIO_2ARGS
1792 #
1793 # 4.4 removed an argument from submit_bio
1794 #
1795 AC_DEFUN([LC_HAVE_SUBMIT_BIO_2ARGS], [
1796 LB_CHECK_COMPILE([if submit_bio takes two arguments],
1797 have_submit_bio_2args, [
1798         #include <linux/bio.h>
1799 ],[
1800         struct bio bio;
1801         submit_bio(READ, &bio);
1802 ], [
1803         AC_DEFINE(HAVE_SUBMIT_BIO_2ARGS, 1,
1804                 [submit_bio takes two arguments])
1805 ])
1806 ]) # LC_HAVE_SUBMIT_BIO_2_ARGS
1807
1808 #
1809 # LC_HAVE_CLEAN_BDEV_ALIASES
1810 #
1811 # 4.4 unmap_underlying_metadata was replaced by clean_bdev_aliases
1812 #
1813 AC_DEFUN([LC_HAVE_CLEAN_BDEV_ALIASES], [
1814 LB_CHECK_COMPILE([if kernel has clean_bdev_aliases],
1815 have_clean_bdev_aliases, [
1816         #include <linux/buffer_head.h>
1817 ],[
1818         struct block_device bdev;
1819         clean_bdev_aliases(&bdev,1,1);
1820 ], [
1821         AC_DEFINE(HAVE_CLEAN_BDEV_ALIASES, 1,
1822                 [kernel has clean_bdev_aliases])
1823 ])
1824 ]) # LC_HAVE_CLEAN_BDEV_ALIASES
1825
1826 #
1827 # LC_HAVE_TRUNCATE_IPAGE_FINAL
1828 #
1829 # 3.14 bring truncate_inode_pages_final for evict_inode
1830 #
1831 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
1832 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
1833 truncate_ipages_final, [
1834         #include <linux/mm.h>
1835 ],[
1836         truncate_inode_pages_final(NULL);
1837 ], [
1838         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
1839                 [kernel has truncate_inode_pages_final])
1840 ])
1841 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
1842
1843 #
1844 # LC_IOPS_RENAME_WITH_FLAGS
1845 #
1846 # 3.14 has inode_operations->rename with 5 args
1847 # commit 520c8b16505236fc82daa352e6c5e73cd9870cff
1848 #
1849 AC_DEFUN([LC_IOPS_RENAME_WITH_FLAGS], [
1850 LB_CHECK_COMPILE([if 'inode_operations->rename' taken flags as argument],
1851 iops_rename_with_flags, [
1852         #include <linux/fs.h>
1853 ],[
1854         struct inode *i1 = NULL, *i2 = NULL;
1855         struct dentry *d1 = NULL, *d2 = NULL;
1856         int rc;
1857         rc = ((struct inode_operations *)0)->rename(i1, d1, i2, d2, 0);
1858 ], [
1859         AC_DEFINE(HAVE_IOPS_RENAME_WITH_FLAGS, 1,
1860                 [inode_operations->rename need flags as argument])
1861 ])
1862 ]) # LC_IOPS_RENAME_WITH_FLAGS
1863
1864 #
1865 # LC_VFS_RENAME_6ARGS
1866 #
1867 # 3.15 has vfs_rename with 6 args
1868 #
1869 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
1870 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
1871 vfs_rename_6args, [
1872         #include <linux/fs.h>
1873 ],[
1874         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
1875 ], [
1876         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
1877                 [kernel has vfs_rename with 6 args])
1878 ])
1879 ]) # LC_VFS_RENAME_6ARGS
1880
1881 #
1882 # LC_DIRECTIO_USE_ITER
1883 #
1884 # 3.16 kernel changes direct IO to use iov_iter
1885 #
1886 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
1887 LB_CHECK_COMPILE([if direct IO uses iov_iter],
1888 direct_io_iter, [
1889         #include <linux/fs.h>
1890 ],[
1891         struct address_space_operations ops = { };
1892         struct iov_iter *iter = NULL;
1893         loff_t offset = 0;
1894
1895         ops.direct_IO(0, NULL, iter, offset);
1896 ],[
1897         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
1898                 [direct IO uses iov_iter])
1899 ])
1900 ]) # LC_DIRECTIO_USE_ITER
1901
1902 #
1903 # LC_HAVE_IOV_ITER_INIT_DIRECTION
1904 #
1905 #
1906 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
1907 #      changed iov_iter_init api to start accepting a tag
1908 #      that defines if its a read or write operation
1909 #
1910 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
1911 tmp_flags="$EXTRA_KCFLAGS"
1912 EXTRA_KCFLAGS="-Werror"
1913 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
1914 iter_init, [
1915         #include <linux/uio.h>
1916         #include <linux/fs.h>
1917 ],[
1918         const struct iovec *iov = NULL;
1919
1920         iov_iter_init(NULL, READ, iov, 1, 0);
1921 ],[
1922         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
1923                 [iov_iter_init handles directional tag])
1924 ])
1925 EXTRA_KCFLAGS="$tmp_flags"
1926 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
1927
1928 #
1929 # LC_HAVE_IOV_ITER_TRUNCATE
1930 #
1931 #
1932 # 3.16 introduces a new API iov_iter_truncate()
1933 #
1934 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
1935 tmp_flags="$EXTRA_KCFLAGS"
1936 EXTRA_KCFLAGS="-Werror"
1937 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
1938 iter_truncate, [
1939         #include <linux/uio.h>
1940         #include <linux/fs.h>
1941 ],[
1942         struct iov_iter *i = NULL;
1943
1944         iov_iter_truncate(i, 0);
1945 ],[
1946         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
1947 ])
1948 EXTRA_KCFLAGS="$tmp_flags"
1949 ]) # LC_HAVE_IOV_ITER_TRUNCATE
1950
1951 #
1952 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1953 #
1954 # 3.16 introduces [read|write]_iter to struct file_operations
1955 #
1956 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1957 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
1958 file_function_iter, [
1959         #include <linux/fs.h>
1960 ],[
1961         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
1962         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
1963 ],[
1964         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
1965                 [file_operations.[read|write]_iter functions exist])
1966 ])
1967 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1968
1969 #
1970 # LC_HAVE_INTERVAL_BLK_INTEGRITY
1971 #
1972 # 3.17 replace sector_size with interval in struct blk_integrity
1973 #
1974 AC_DEFUN([LC_HAVE_INTERVAL_BLK_INTEGRITY], [
1975 LB_CHECK_COMPILE([if 'blk_integrity.interval' exist],
1976 interval_blk_integrity, [
1977         #include <linux/blkdev.h>
1978 ],[
1979         ((struct blk_integrity *)0)->interval = 0;
1980 ],[
1981         AC_DEFINE(HAVE_INTERVAL_BLK_INTEGRITY, 1,
1982                 [blk_integrity.interval exist])
1983 ])
1984 ]) # LC_HAVE_INTERVAL_BLK_INTEGRITY
1985
1986 #
1987 # LC_KEY_MATCH_DATA
1988 #
1989 # 3.17  replaces key_type::match with match_preparse
1990 #       and has new struct key_match_data
1991 #
1992 AC_DEFUN([LC_KEY_MATCH_DATA], [
1993 LB_CHECK_COMPILE([if struct key_match field exist],
1994 key_match, [
1995         #include <linux/key-type.h>
1996 ],[
1997         struct key_match_data data;
1998
1999         data.raw_data = NULL;
2000 ],[
2001         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
2002                 [struct key_match_data exist])
2003 ])
2004 ]) # LC_KEY_MATCH_DATA
2005
2006 #
2007 # LC_NFS_FILLDIR_USE_CTX
2008 #
2009 # 3.18 kernel moved from void cookie to struct dir_context
2010 #
2011 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
2012 tmp_flags="$EXTRA_KCFLAGS"
2013 EXTRA_KCFLAGS="-Werror"
2014 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
2015 filldir_ctx, [
2016         #include <linux/fs.h>
2017 ],[
2018         int filldir(struct dir_context *ctx, const char* name,
2019                     int i, loff_t off, u64 tmp, unsigned temp)
2020         {
2021                 return 0;
2022         }
2023
2024         struct dir_context ctx = {
2025                 .actor = filldir,
2026         };
2027
2028         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
2029 ],[
2030         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
2031                 [filldir_t needs struct dir_context as argument])
2032 ])
2033 EXTRA_KCFLAGS="$tmp_flags"
2034 ]) # LC_NFS_FILLDIR_USE_CTX
2035
2036 #
2037 # LC_PERCPU_COUNTER_INIT
2038 #
2039 # 3.18  For kernels 3.18 and after percpu_counter_init starts
2040 #       to pass a GFP_* memory allocation flag for internal
2041 #       memory allocation purposes.
2042 #
2043 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
2044 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
2045 percpu_counter_init, [
2046         #include <linux/percpu_counter.h>
2047 ],[
2048         percpu_counter_init(NULL, 0, GFP_KERNEL);
2049 ],[
2050         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
2051                 [percpu_counter_init uses GFP_* flag])
2052 ])
2053 ]) # LC_PERCPU_COUNTER_INIT
2054
2055 #
2056 # LC_KIOCB_HAS_NBYTES
2057 #
2058 # 3.19 kernel removed ki_nbytes from struct kiocb
2059 #
2060 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
2061 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
2062 ki_nbytes, [
2063         #include <linux/fs.h>
2064 ],[
2065         struct kiocb iocb = { };
2066
2067         iocb.ki_nbytes = 0;
2068 ],[
2069         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
2070 ])
2071 ]) # LC_KIOCB_HAS_NBYTES
2072
2073 #
2074 # LC_HAVE_DQUOT_QC_DQBLK
2075 #
2076 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
2077 # Added in commit 14bf61ffe
2078 #
2079 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
2080 tmp_flags="$EXTRA_KCFLAGS"
2081 EXTRA_KCFLAGS="-Werror"
2082 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk],
2083 qc_dqblk, [
2084         #include <linux/fs.h>
2085         #include <linux/quota.h>
2086 ],[
2087         ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
2088 ],[
2089         AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
2090                 [quotactl_ops.set_dqblk takes struct qc_dqblk])
2091         AC_DEFINE(HAVE_DQUOT_KQID, 1,
2092                 [quotactl_ops.set_dqblk takes struct kqid])
2093 ])
2094 EXTRA_KCFLAGS="$tmp_flags"
2095 ]) # LC_HAVE_DQUOT_QC_DQBLK
2096
2097 #
2098 # LC_BACKING_DEV_INFO_REMOVAL
2099 #
2100 # 3.20 kernel removed backing_dev_info from address_space
2101 #
2102 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
2103 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
2104 backing_dev_info, [
2105         #include <linux/fs.h>
2106 ],[
2107         struct address_space mapping;
2108
2109         mapping.backing_dev_info = NULL;
2110 ],[
2111         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
2112 ])
2113 ]) # LC_BACKING_DEV_INFO_REMOVAL
2114
2115 #
2116 # LC_HAVE_BDI_CAP_MAP_COPY
2117 #
2118 # 3.20  removed mmap handling for backing devices since
2119 #       it breaks on non-MMU systems. See kernel commit
2120 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
2121 #
2122 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
2123 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
2124 bdi_cap_map_copy, [
2125         #include <linux/backing-dev.h>
2126 ],[
2127         struct backing_dev_info info;
2128
2129         info.capabilities = BDI_CAP_MAP_COPY;
2130 ],[
2131         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
2132                 [BDI_CAP_MAP_COPY exist])
2133 ])
2134 ]) # LC_HAVE_BDI_CAP_MAP_COPY
2135
2136 #
2137 # LC_CANCEL_DIRTY_PAGE
2138 #
2139 # 4.0.0 kernel removed cancel_dirty_page
2140 #
2141 AC_DEFUN([LC_CANCEL_DIRTY_PAGE], [
2142 LB_CHECK_COMPILE([if cancel_dirty_page still exist],
2143 cancel_dirty_page, [
2144         #include <linux/mm.h>
2145 ],[
2146         cancel_dirty_page(NULL, PAGE_SIZE);
2147 ],[
2148         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
2149                 [cancel_dirty_page is still available])
2150 ])
2151 ]) # LC_CANCEL_DIRTY_PAGE
2152
2153 #
2154 # LC_IOV_ITER_RW
2155 #
2156 # 4.1 kernel has iov_iter_rw
2157 #
2158 AC_DEFUN([LC_IOV_ITER_RW], [
2159 LB_CHECK_COMPILE([if iov_iter_rw exist],
2160 iov_iter_rw, [
2161         #include <linux/fs.h>
2162         #include <linux/uio.h>
2163 ],[
2164         struct iov_iter *iter = NULL;
2165
2166         iov_iter_rw(iter);
2167 ],[
2168         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
2169                 [iov_iter_rw exist])
2170 ])
2171 ]) # LC_IOV_ITER_RW
2172
2173 #
2174 # LC_HAVE_SYNC_READ_WRITE
2175 #
2176 # 4.1 new_sync_[read|write] no longer exported
2177 #
2178 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
2179 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
2180         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
2181                         [new_sync_[read|write] is exported by the kernel])])
2182 ]) # LC_HAVE_SYNC_READ_WRITE
2183
2184 #
2185 # LC_NEW_CANCEL_DIRTY_PAGE
2186 #
2187 # 4.2 kernel has new cancel_dirty_page
2188 #
2189 AC_DEFUN([LC_NEW_CANCEL_DIRTY_PAGE], [
2190 LB_CHECK_COMPILE([if cancel_dirty_page with one argument exist],
2191 new_cancel_dirty_page, [
2192         #include <linux/mm.h>
2193 ],[
2194         cancel_dirty_page(NULL);
2195 ],[
2196         AC_DEFINE(HAVE_NEW_CANCEL_DIRTY_PAGE, 1,
2197                 [cancel_dirty_page with one arguement is available])
2198 ])
2199 ]) # LC_NEW_CANCEL_DIRTY_PAGE
2200
2201 #
2202 # LC_SYMLINK_OPS_USE_NAMEIDATA
2203 #
2204 # For the 4.2+ kernels the file system internal symlink api no
2205 # longer uses struct nameidata as a argument
2206 #
2207 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
2208 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
2209 symlink_use_nameidata, [
2210         #include <linux/namei.h>
2211         #include <linux/fs.h>
2212 ],[
2213         struct nameidata *nd = NULL;
2214
2215         ((struct inode_operations *)0)->follow_link(NULL, nd);
2216         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
2217 ],[
2218         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
2219                 [symlink inode operations need struct nameidata argument])
2220 ])
2221 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
2222
2223 #
2224 # LC_BIO_ENDIO_USES_ONE_ARG
2225 #
2226 # 4.2 kernel bio_endio now only takes one argument
2227 #
2228 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
2229 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
2230 bio_endio, [
2231         #include <linux/bio.h>
2232 ],[
2233         bio_endio(NULL);
2234 ],[
2235         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
2236                 [bio_endio takes only one argument])
2237 ])
2238 ]) # LC_BIO_ENDIO_USES_ONE_ARG
2239
2240 #
2241 # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
2242 #
2243 # 4.3 replace interval with interval_exp in 'struct blk_integrity'
2244 # 'struct blk_integrity_profile' is also added in this version,
2245 # thus use this to determine whether 'struct blk_integrity' has profile
2246 #
2247 AC_DEFUN([LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY], [
2248 LB_CHECK_COMPILE([if 'blk_integrity.interval_exp' exist],
2249 blk_integrity_interval_exp, [
2250         #include <linux/blkdev.h>
2251 ],[
2252         ((struct blk_integrity *)0)->interval_exp = 0;
2253 ],[
2254         AC_DEFINE(HAVE_INTERVAL_EXP_BLK_INTEGRITY, 1,
2255                 [blk_integrity.interval_exp exist])
2256 ])
2257 ]) # LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
2258
2259 #
2260 # LC_HAVE_LOOP_CTL_GET_FREE
2261 #
2262 # 4.x kernel have moved userspace APIs to
2263 # the separate directory and all of them
2264 # support LOOP_CTL_GET_FREE
2265 #
2266 AC_DEFUN([LC_HAVE_LOOP_CTL_GET_FREE], [
2267 LB_CHECK_FILE([$LINUX/include/linux/loop.h], [
2268         LB_CHECK_COMPILE([if have 'HAVE_LOOP_CTL_GET_FREE'],
2269         LOOP_CTL_GET_FREE, [
2270                 #include <linux/loop.h>
2271         ],[
2272                 int i;
2273
2274                 i = LOOP_CTL_GET_FREE;
2275         ],[
2276                 AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2277                         [LOOP_CTL_GET_FREE exist])
2278         ])
2279 ],[
2280         AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2281                 [kernel has LOOP_CTL_GET_FREE])
2282 ])
2283 ]) # LC_HAVE_LOOP_CTL_GET_FREE
2284
2285 #
2286 # LC_HAVE_CACHE_HEAD_HLIST
2287 #
2288 # 4.3 kernel swiched to hlist for cache_head
2289 #
2290 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
2291 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
2292 cache_head_has_hlist, [
2293         #include <linux/sunrpc/cache.h>
2294 ],[
2295         do {} while(sizeof(((struct cache_head *)0)->cache_list));
2296 ],[
2297         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
2298                 [cache_head has hlist cache_list])
2299 ])
2300 ]) # LC_HAVE_CACHE_HEAD_HLIST
2301
2302 #
2303 # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2304 #
2305 # Kernel version 4.3 commit e409de992e3ea3674393465f07cc71c948edd87a
2306 # simplified xattr_handler handling by passing in the handler pointer
2307 #
2308 AC_DEFUN([LC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
2309 tmp_flags="$EXTRA_KCFLAGS"
2310 EXTRA_KCFLAGS="-Werror"
2311 LB_CHECK_COMPILE([if 'struct xattr_handler' functions pass in handler pointer],
2312 xattr_handler_simplified, [
2313         #include <linux/xattr.h>
2314 ],[
2315         struct xattr_handler handler;
2316
2317         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, 0);
2318         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, 0, 0);
2319 ],[
2320         AC_DEFINE(HAVE_XATTR_HANDLER_SIMPLIFIED, 1, [handler pointer is parameter])
2321 ])
2322 EXTRA_KCFLAGS="$tmp_flags"
2323 ]) # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2324
2325 #
2326 # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
2327 #
2328 # 4.3 replace interval with interval_exp in 'struct blk_integrity'.
2329 #
2330 AC_DEFUN([LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD], [
2331 LB_CHECK_COMPILE([if 'bio_integrity_payload.bip_iter' exist],
2332 bio_integrity_payload_bip_iter, [
2333         #include <linux/bio.h>
2334 ],[
2335         ((struct bio_integrity_payload *)0)->bip_iter.bi_size = 0;
2336 ],[
2337         AC_DEFINE(HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD, 1,
2338                 [bio_integrity_payload.bip_iter exist])
2339 ])
2340 ]) # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
2341
2342 #
2343 # LC_BIO_INTEGRITY_PREP_FN
2344 #
2345 # Lustre kernel patch extents bio_integrity_prep to accept optional
2346 # generate/verify_fn as extra args.
2347 #
2348 AC_DEFUN([LC_BIO_INTEGRITY_PREP_FN], [
2349 LB_CHECK_COMPILE([if 'bio_integrity_prep_fn' exists],
2350 bio_integrity_prep_fn, [
2351         #include <linux/bio.h>
2352 ],[
2353         bio_integrity_prep_fn(NULL, NULL, NULL);
2354 ],[
2355         AC_DEFINE(HAVE_BIO_INTEGRITY_PREP_FN, 1,
2356                 [kernel has bio_integrity_prep_fn])
2357         AC_SUBST(PATCHED_INTEGRITY_INTF)
2358 ],[
2359         AC_SUBST(PATCHED_INTEGRITY_INTF, [#])
2360 ])
2361 ]) # LC_BIO_INTEGRITY_PREP_FN
2362
2363 #
2364 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2365 #
2366 # 4.4 kernel have moved locks API users to
2367 # locks_lock_inode_wait()
2368 #
2369 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
2370 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
2371 locks_lock_file_wait, [
2372         #include <linux/fs.h>
2373 ],[
2374         locks_lock_file_wait(NULL, NULL);
2375 ],[
2376         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
2377                 [kernel has locks_lock_file_wait])
2378 ])
2379 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2380
2381 #
2382 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2383 #
2384 # 4.4 kernel merged type-specific data with the payload data for keys
2385 #
2386 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
2387 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
2388 key_payload_data_array, [
2389         #include <linux/key.h>
2390 ],[
2391         struct key key = { };
2392
2393         key.payload.data[0] = NULL;
2394 ],[
2395         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
2396 ])
2397 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2398
2399 #
2400 # LC_HAVE_XATTR_HANDLER_NAME
2401 #
2402 # Kernel version 4.4 commit 98e9cb5711c68223f0e4d5201b9a6add255ec550
2403 # add a name member to struct xattr_handler
2404 #
2405 AC_DEFUN([LC_HAVE_XATTR_HANDLER_NAME], [
2406 tmp_flags="$EXTRA_KCFLAGS"
2407 EXTRA_KCFLAGS="-Werror"
2408 LB_CHECK_COMPILE([if 'struct xattr_handler' has a name member],
2409 xattr_handler_name, [
2410         #include <linux/xattr.h>
2411 ],[
2412         ((struct xattr_handler *)NULL)->name = NULL;
2413 ],[
2414         AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1, [xattr_handler has a name member])
2415 ])
2416 EXTRA_KCFLAGS="$tmp_flags"
2417 ]) # LC_HAVE_XATTR_HANDLER_NAME
2418
2419 #
2420 # LC_HAVE_FILE_DENTRY
2421 #
2422 # 4.5 adds wrapper file_dentry
2423 #
2424 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
2425 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
2426 file_dentry, [
2427         #include <linux/fs.h>
2428 ],[
2429         file_dentry(NULL);
2430 ], [
2431         AC_DEFINE(HAVE_FILE_DENTRY, 1,
2432                 [kernel has file_dentry])
2433 ])
2434 ]) # LC_HAVE_FILE_DENTRY
2435
2436 #
2437 # LC_HAVE_INODE_LOCK
2438 #
2439 # 4.5 introduced inode_lock
2440 #
2441 AC_DEFUN([LC_HAVE_INODE_LOCK], [
2442 LB_CHECK_COMPILE([if 'inode_lock' is defined],
2443 inode_lock, [
2444         #include <linux/fs.h>
2445 ],[
2446         inode_lock(NULL);
2447 ], [
2448         AC_DEFINE(HAVE_INODE_LOCK, 1,
2449                   [inode_lock is defined])
2450 ])
2451 ]) # LC_HAVE_INODE_LOCK
2452
2453 #
2454 # LC_HAVE_IOP_GET_LINK
2455 #
2456 # 4.5 vfs replaced iop->follow_link with
2457 # iop->get_link
2458 #
2459 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
2460 LB_CHECK_COMPILE([if 'iop' has 'get_link'],
2461 inode_ops_get_link, [
2462         #include <linux/fs.h>
2463 ],[
2464         struct inode_operations iop;
2465         iop.get_link = NULL;
2466 ],[
2467         AC_DEFINE(HAVE_IOP_GET_LINK, 1,
2468                 [have iop get_link])
2469 ])
2470 ]) # LC_HAVE_IOP_GET_LINK
2471
2472 #
2473 # LC_HAVE_IN_COMPAT_SYSCALL
2474 #
2475 # 4.6 renamed is_compat_task to in_compat_syscall
2476 #
2477 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
2478 LB_CHECK_COMPILE([if 'in_compat_syscall' is defined],
2479 in_compat_syscall, [
2480         #include <linux/compat.h>
2481 ],[
2482         in_compat_syscall();
2483 ],[
2484         AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1,
2485                 [have in_compat_syscall])
2486 ])
2487 ]) # LC_HAVE_IN_COMPAT_SYSCALL
2488
2489 #
2490 # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2491 #
2492 # Kernel version 4.6 commit b296821a7c42fa58baa17513b2b7b30ae66f3336
2493 # and commit 5930122683dff58f0846b0f0405b4bd598a3ba6a added inode parameter
2494 # to xattr_handler functions
2495 #
2496 AC_DEFUN([LC_HAVE_XATTR_HANDLER_INODE_PARAM], [
2497 tmp_flags="$EXTRA_KCFLAGS"
2498 EXTRA_KCFLAGS="-Werror"
2499 LB_CHECK_COMPILE([if 'struct xattr_handler' functions have inode parameter],
2500 xattr_handler_inode_param, [
2501         #include <linux/xattr.h>
2502 ],[
2503         const struct xattr_handler handler;
2504
2505         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, NULL, 0);
2506         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, NULL, 0, 0);
2507 ],[
2508         AC_DEFINE(HAVE_XATTR_HANDLER_INODE_PARAM, 1, [needs inode parameter])
2509 ])
2510 EXTRA_KCFLAGS="$tmp_flags"
2511 ]) # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2512
2513 #
2514 # LC_DIRECTIO_2ARGS
2515 #
2516 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2517 # direct-io: eliminate the offset argument to ->direct_IO
2518 #
2519 AC_DEFUN([LC_DIRECTIO_2ARGS], [
2520 LB_CHECK_COMPILE([if '->direct_IO()' taken 2 arguments],
2521 direct_io_2args, [
2522         #include <linux/fs.h>
2523 ],[
2524         struct address_space_operations ops = { };
2525         struct iov_iter *iter = NULL;
2526         struct kiocb *iocb = NULL;
2527         int rc;
2528
2529         rc = ops.direct_IO(iocb, iter);
2530 ],[
2531         AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1,
2532                 [direct_IO need 2 arguments])
2533 ])
2534 ]) # LC_DIRECTIO_2ARGS
2535
2536 #
2537 # LC_GENERIC_WRITE_SYNC_2ARGS
2538 #
2539 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2540 # direct-io: eliminate the offset argument to ->direct_IO
2541 #
2542 AC_DEFUN([LC_GENERIC_WRITE_SYNC_2ARGS], [
2543 LB_CHECK_COMPILE([if 'generic_write_sync()' taken 2 arguments],
2544 generic_write_sync_2args, [
2545         #include <linux/fs.h>
2546 ],[
2547         struct kiocb *iocb = NULL;
2548         ssize_t rc;
2549
2550         rc = generic_write_sync(iocb, 0);
2551 ],[
2552         AC_DEFINE(HAVE_GENERIC_WRITE_SYNC_2ARGS, 1,
2553                 [generic_write_sync need 2 arguments])
2554 ])
2555 ]) # LC_GENERIC_WRITE_SYNC_2ARGS
2556
2557 #
2558 # LC_FOP_ITERATE_SHARED
2559 #
2560 # Kernel version 4.7 adds iterate_shared method to file_operations
2561 #
2562 AC_DEFUN([LC_FOP_ITERATE_SHARED], [
2563 LB_CHECK_COMPILE([if 'file_operations' has 'iterate_shared'],
2564 fop_iterate_shared, [
2565         #include <linux/fs.h>
2566 ],[
2567         struct file_operations fop;
2568         fop.iterate_shared = NULL;
2569 ],[
2570         AC_DEFINE(HAVE_FOP_ITERATE_SHARED, 1,
2571                 [file_operations has iterate_shared])
2572 ])
2573 ]) # LC_FOP_ITERATE_SHARED
2574
2575 #
2576 # LC_FOPS_ITERATE_SHARED
2577 #
2578 # 4.7 commit ae05327a00fd47c34dfe25294b359a3f3fef96e8
2579 # ext4: switch to ->iterate_shared()
2580 # this replaces ext4_dir_operations iterate with iterate_shared.
2581 # dir_relaxed_shared() was also added in this commit, so we can
2582 # use that function to verify that the ext4_dir_operations is using
2583 # iterate_shared.
2584 #
2585 AC_DEFUN([LC_FOPS_ITERATE_SHARED], [
2586 LB_CHECK_COMPILE([if ext4_dir_operations uses iterate_shared],
2587 iterate_shared, [
2588         #include <linux/fs.h>
2589 ],[
2590         ((struct file_operations *)0)->iterate_shared(NULL, NULL);
2591         dir_relax_shared(NULL);
2592 ],[
2593         AC_DEFINE(HAVE_ITERATE_SHARED, 1,
2594                 ['iterate_shared' is available])
2595 ])
2596 ]) # LC_FOPS_ITERATE_SHARED
2597
2598 #
2599 # LC_HAVE_POSIX_ACL_VALID_USER_NS
2600 #
2601 # 4.8 posix_acl_valid takes struct user_namespace
2602 #
2603 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
2604 LB_CHECK_COMPILE([if 'posix_acl_valid' takes 'struct user_namespace'],
2605 posix_acl_valid, [
2606         #include <linux/fs.h>
2607         #include <linux/posix_acl.h>
2608 ],[
2609         posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
2610 ],[
2611         AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
2612                 [posix_acl_valid takes struct user_namespace])
2613 ])
2614 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
2615
2616 #
2617 # LC_D_COMPARE_4ARGS
2618 #
2619 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
2620 # get rid of 'parent' argument of ->d_compare()
2621 #
2622 AC_DEFUN([LC_D_COMPARE_4ARGS], [
2623 LB_CHECK_COMPILE([if 'd_compare' taken 4 arguments],
2624 d_compare_4args, [
2625         #include <linux/dcache.h>
2626 ],[
2627         ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
2628 ],[
2629         AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
2630                 [d_compare need 4 arguments])
2631 ])
2632 ]) # LC_D_COMPARE_4ARGS
2633
2634 #
2635 # LC_FULL_NAME_HASH_3ARGS
2636 #
2637 # Kernel version 4.8 commit 8387ff2577eb9ed245df9a39947f66976c6bcd02
2638 # vfs: make the string hashes salt the hash
2639 #
2640 AC_DEFUN([LC_FULL_NAME_HASH_3ARGS], [
2641 LB_CHECK_COMPILE([if 'full_name_hash' taken 3 arguments],
2642 full_name_hash_3args, [
2643         #include <linux/stringhash.h>
2644 ],[
2645         unsigned int hash;
2646         hash = full_name_hash(NULL,NULL,0);
2647 ],[
2648         AC_DEFINE(HAVE_FULL_NAME_HASH_3ARGS, 1,
2649                 [full_name_hash need 3 arguments])
2650 ])
2651 ]) # LC_FULL_NAME_HASH_3ARGS
2652
2653 #
2654 # LC_STRUCT_POSIX_ACL_XATTR
2655 #
2656 # Kernel version 4.8 commit 2211d5ba5c6c4e972ba6dbc912b2897425ea6621
2657 # posix_acl: xattr representation cleanups
2658 #
2659 AC_DEFUN([LC_STRUCT_POSIX_ACL_XATTR], [
2660 LB_CHECK_COMPILE([if 'struct posix_acl_xattr_{header,entry}' defined],
2661 struct_posix_acl_xattr, [
2662         #include <linux/fs.h>
2663         #include <linux/posix_acl_xattr.h>
2664 ],[
2665         struct posix_acl_xattr_header *h = NULL;
2666         struct posix_acl_xattr_entry  *e;
2667         e = (void *)(h + 1);
2668 ],[
2669         AC_DEFINE(HAVE_STRUCT_POSIX_ACL_XATTR, 1,
2670                 [struct posix_acl_xattr_{header,entry} defined])
2671 ])
2672 ]) # LC_STRUCT_POSIX_ACL_XATTR
2673
2674 #
2675 # LC_IOP_XATTR
2676 #
2677 # Kernel version 4.8 commit fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42
2678 # removed {get,set,remove}xattr inode operations
2679 #
2680 AC_DEFUN([LC_IOP_XATTR], [
2681 LB_CHECK_COMPILE([if 'inode_operations' has {get,set,remove}xattr members],
2682 inode_ops_xattr, [
2683         #include <linux/fs.h>
2684 ],[
2685         struct inode_operations iop;
2686         iop.setxattr = NULL;
2687         iop.getxattr = NULL;
2688         iop.removexattr = NULL;
2689 ],[
2690         AC_DEFINE(HAVE_IOP_XATTR, 1,
2691                 [inode_operations has {get,set,remove}xattr members])
2692 ])
2693 ]) # LC_IOP_XATTR
2694
2695 #
2696 # LC_GROUP_INFO_GID
2697 #
2698 # Kernel version 4.9 commit 81243eacfa400f5f7b89f4c2323d0de9982bb0fb
2699 # cred: simpler, 1D supplementary groups
2700 #
2701 AC_DEFUN([LC_GROUP_INFO_GID], [
2702 LB_CHECK_COMPILE([if 'struct group_info' has member 'gid'],
2703 group_info_gid, [
2704         #include <linux/cred.h>
2705 ],[
2706         kgid_t *p;
2707         p = ((struct group_info *)0)->gid;
2708 ],[
2709         AC_DEFINE(HAVE_GROUP_INFO_GID, 1,
2710                 [struct group_info has member gid])
2711 ])
2712 ]) # LC_GROUP_INFO_GID
2713
2714 #
2715 # LC_VFS_SETXATTR
2716 #
2717 # Kernel version 4.9 commit 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4
2718 # added __vfs_{get,set,remove}xattr helpers
2719 #
2720 AC_DEFUN([LC_VFS_SETXATTR], [
2721 LB_CHECK_COMPILE([if '__vfs_setxattr' helper is available],
2722 vfs_setxattr, [
2723         #include <linux/xattr.h>
2724 ],[
2725         __vfs_setxattr(NULL, NULL, NULL, NULL, 0, 0);
2726 ],[
2727         AC_DEFINE(HAVE_VFS_SETXATTR, 1,
2728                 ['__vfs_setxattr is available])
2729 ])
2730 ]) # LC_VFS_SETXATTR
2731
2732 #
2733 # LC_POSIX_ACL_UPDATE_MODE
2734 #
2735 # Kernel version 4.9 commit 073931017b49d9458aa351605b43a7e34598caef
2736 # posix_acl: Clear SGID bit when setting file permissions
2737 #
2738 AC_DEFUN([LC_POSIX_ACL_UPDATE_MODE], [
2739 LB_CHECK_COMPILE([if 'posix_acl_update_mode' exists],
2740 posix_acl_update_mode, [
2741         #include <linux/fs.h>
2742         #include <linux/posix_acl.h>
2743 ],[
2744         posix_acl_update_mode(NULL, NULL, NULL);
2745 ],[
2746         AC_DEFINE(HAVE_POSIX_ACL_UPDATE_MODE, 1,
2747                 ['posix_acl_update_mode' is available])
2748 ])
2749 ]) # LC_POSIX_ACL_UPDATE_MODE
2750
2751 #
2752 # LC_IOP_GENERIC_READLINK
2753 #
2754 # Kernel version 4.10 commit dfeef68862edd7d4bafe68ef7aeb5f658ef24bb5
2755 # removed generic_readlink from individual file systems
2756 #
2757 AC_DEFUN([LC_IOP_GENERIC_READLINK], [
2758 LB_CHECK_COMPILE([if 'generic_readlink' still exist],
2759 inode_ops_readlink, [
2760         #include <linux/fs.h>
2761 ],[
2762         struct inode_operations iop;
2763         iop.readlink = generic_readlink;
2764 ],[
2765         AC_DEFINE(HAVE_IOP_GENERIC_READLINK, 1,
2766                 [generic_readlink has been removed])
2767 ])
2768 ]) # LC_IOP_GENERIC_READLINK
2769
2770 #
2771 # LC_HAVE_VM_FAULT_ADDRESS
2772 #
2773 # Kernel version 4.10 commit 1a29d85eb0f19b7d8271923d8917d7b4f5540b3e
2774 # removed virtual_address field. Need to use address field instead
2775 #
2776 AC_DEFUN([LC_HAVE_VM_FAULT_ADDRESS], [
2777 LB_CHECK_COMPILE([if 'struct vm_fault' replaced virtual_address with address field],
2778 vm_fault_address, [
2779         #include <linux/mm.h>
2780 ],[
2781         struct vm_fault vmf;
2782         vmf.address = NULL;
2783 ],[
2784         AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
2785                 [virtual_address has been replaced by address field])
2786 ])
2787 ]) # LC_HAVE_VM_FAULT_ADDRESS
2788
2789 #
2790 # LC_INODEOPS_ENHANCED_GETATTR
2791 #
2792 # Kernel version 4.11 commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
2793 # expanded getattr to be able to get more stat information.
2794 #
2795 AC_DEFUN([LC_INODEOPS_ENHANCED_GETATTR], [
2796 LB_CHECK_COMPILE([if 'inode_operations' getattr member can gather advance stats],
2797 getattr_path, [
2798         #include <linux/fs.h>
2799 ],[
2800         struct path path;
2801
2802         ((struct inode_operations *)1)->getattr(&path, NULL, 0, 0);
2803 ],[
2804         AC_DEFINE(HAVE_INODEOPS_ENHANCED_GETATTR, 1,
2805                 [inode_operations .getattr member function can gather advance stats])
2806 ])
2807 ]) # LC_INODEOPS_ENHANCED_GETATTR
2808
2809 #
2810 # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2811 #
2812 # Kernel version 4.11 commit 11bac80004499ea59f361ef2a5516c84b6eab675
2813 # removed struct vm_area_struct as an argument for vm_operations since
2814 # in the same kernel version struct vma_area_struct was folded into
2815 # struct vm_fault.
2816 #
2817 AC_DEFUN([LC_VM_OPERATIONS_REMOVE_VMF_ARG], [
2818 LB_CHECK_COMPILE([if 'struct vm_operations' removed struct vm_area_struct],
2819 vm_operations_no_vm_area_struct, [
2820         #include <linux/mm.h>
2821 ],[
2822         struct vm_fault vmf;
2823
2824         ((struct vm_operations_struct *)0)->fault(&vmf);
2825         ((struct vm_operations_struct *)0)->page_mkwrite(&vmf);
2826 ],[
2827         AC_DEFINE(HAVE_VM_OPS_USE_VM_FAULT_ONLY, 1,
2828                 ['struct vm_operations' remove struct vm_area_struct argument])
2829 ])
2830 ]) # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2831
2832 #
2833 # LC_HAVE_KEY_USAGE_REFCOUNT
2834 #
2835 # Kernel version 4.11 commit fff292914d3a2f1efd05ca71c2ba72a3c663201e
2836 # converted key.usage from atomic_t to refcount_t.
2837 #
2838 AC_DEFUN([LC_HAVE_KEY_USAGE_REFCOUNT], [
2839 LB_CHECK_COMPILE([if 'key.usage' is refcount_t],
2840 key_usage_refcount, [
2841         #include <linux/key.h>
2842 ],[
2843         struct key key = { };
2844
2845         refcount_read(&key.usage);
2846 ],[
2847         AC_DEFINE(HAVE_KEY_USAGE_REFCOUNT, 1, [key.usage is of type refcount_t])
2848 ])
2849 ]) #LC_HAVE_KEY_USAGE_REFCOUNT
2850
2851 #
2852 # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2853 #
2854 # Kernel version 4.11 commit f437a3f477cce402dbec6537b29e9e33962c9f73
2855 # switched CRYPTO_MAX_ALG_NAME from 64 to 128.
2856 #
2857 AC_DEFUN([LC_HAVE_CRYPTO_MAX_ALG_NAME_128], [
2858 LB_CHECK_COMPILE([if 'CRYPTO_MAX_ALG_NAME' is 128],
2859 crypto_max_alg_name, [
2860         #include <linux/crypto.h>
2861 ],[
2862         #if CRYPTO_MAX_ALG_NAME != 128
2863         exit(1);
2864         #endif
2865 ],[
2866         AC_DEFINE(HAVE_CRYPTO_MAX_ALG_NAME_128, 1,
2867                 ['CRYPTO_MAX_ALG_NAME' is 128])
2868 ])
2869 ]) # LC_HAVE_CRYPTO_MAX_ALG_NAME_128
2870
2871 #
2872 # Kernel version 4.12 commit 47f38c539e9a42344ff5a664942075bd4df93876
2873 # CURRENT_TIME is not 64 bit time safe so it was replaced with
2874 # current_time()
2875 #
2876 AC_DEFUN([LC_CURRENT_TIME], [
2877 LB_CHECK_COMPILE([if CURRENT_TIME has been replaced with current_time],
2878 current_time, [
2879         #include <linux/fs.h>
2880 ],[
2881         struct timespec ts = current_time(NULL);
2882 ],[
2883         AC_DEFINE(HAVE_CURRENT_TIME, 1,
2884                 [current_time() has replaced CURRENT_TIME])
2885 ])
2886 ]) # LIBCFS_CURRENT_TIME
2887
2888 #
2889 # LC_SUPER_SETUP_BDI_NAME
2890 #
2891 # Kernel version 4.12 commit 9594caf216dc0fe3e318b34af0127276db661241
2892 # unified bdi handling
2893 #
2894 AC_DEFUN([LC_SUPER_SETUP_BDI_NAME], [
2895 LB_CHECK_COMPILE([if 'super_setup_bdi_name' exist],
2896 super_setup_bdi_name, [
2897         #include <linux/fs.h>
2898 ],[
2899         super_setup_bdi_name(NULL, "lustre");
2900 ],[
2901         AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1,
2902                 ['super_setup_bdi_name' is available])
2903 ])
2904 ]) # LC_SUPER_SETUP_BDI_NAME
2905
2906 #
2907 # LC_BI_STATUS
2908 #
2909 # 4.12 replace bi_error to bi_status
2910 #
2911 AC_DEFUN([LC_BI_STATUS], [
2912 LB_CHECK_COMPILE([if 'bi_status' exist],
2913 bi_status, [
2914         #include <linux/blk_types.h>
2915 ],[
2916         ((struct bio *)0)->bi_status = 0;
2917 ],[
2918         AC_DEFINE(HAVE_BI_STATUS, 1,
2919                 ['bi_status' is available])
2920 ])
2921 ]) # LC_BI_STATUS
2922
2923 #
2924 # LC_BIO_INTEGRITY_ENABLED
2925 #
2926 # 4.13 removed bio_integrity_enabled
2927 #
2928 AC_DEFUN([LC_BIO_INTEGRITY_ENABLED], [
2929 LB_CHECK_COMPILE([if 'bio_integrity_enabled' exist],
2930 bio_integrity_enabled, [
2931         #include <linux/bio.h>
2932 ],[
2933         bio_integrity_enabled(NULL);
2934 ],[
2935         AC_DEFINE(HAVE_BIO_INTEGRITY_ENABLED, 1,
2936                 ['bio_integrity_enabled' is available])
2937 ])
2938 ]) # LC_BIO_INTEGRITY_ENABLED
2939
2940 #
2941 # LC_PAGEVEC_INIT_ONE_PARAM
2942 #
2943 # 4.14 pagevec_init takes one parameter
2944 #
2945 AC_DEFUN([LC_PAGEVEC_INIT_ONE_PARAM], [
2946 LB_CHECK_COMPILE([if 'pagevec_init' takes one parameter],
2947 pagevec_init, [
2948         #include <linux/pagevec.h>
2949 ],[
2950         pagevec_init(NULL);
2951 ],[
2952         AC_DEFINE(HAVE_PAGEVEC_INIT_ONE_PARAM, 1,
2953                 ['pagevec_init' takes one parameter])
2954 ])
2955 ]) # LC_PAGEVEC_INIT_ONE_PARAM
2956
2957 #
2958 # LC_BI_BDEV
2959 #
2960 # 4.14 replaced bi_bdev to bi_disk
2961 #
2962 AC_DEFUN([LC_BI_BDEV], [
2963 LB_CHECK_COMPILE([if 'bi_bdev' exist],
2964 bi_bdev, [
2965         #include <linux/bio.h>
2966 ],[
2967         ((struct bio *)0)->bi_bdev = NULL;
2968 ],[
2969         AC_DEFINE(HAVE_BI_BDEV, 1,
2970                 ['bi_bdev' is available])
2971 ])
2972 ]) # LC_BI_BDEV
2973
2974 #
2975 # LC_PROG_LINUX
2976 #
2977 # Lustre linux kernel checks
2978 #
2979 AC_DEFUN([LC_PROG_LINUX], [
2980         AC_MSG_NOTICE([Lustre kernel checks
2981 ==============================================================================])
2982
2983         LC_CONFIG_PINGER
2984         LC_CONFIG_CHECKSUM
2985         LC_CONFIG_HEALTH_CHECK_WRITE
2986         LC_CONFIG_LRU_RESIZE
2987
2988         LC_GLIBC_SUPPORT_FHANDLES
2989         LC_CONFIG_GSS
2990         LC_OPENSSL_SSK
2991
2992         # 2.6.32
2993         LC_BLK_QUEUE_MAX_SEGMENTS
2994
2995         # 2.6.33
2996         LC_HAVE_XATTR_HANDLER_FLAGS
2997
2998         # 2.6.34
2999         LC_HAVE_DQUOT_FS_DISK_QUOTA
3000         LC_HAVE_DQUOT_SUSPEND
3001         LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
3002
3003         # 2.6.35, 3.0.0
3004         LC_FILE_FSYNC
3005         LC_EXPORT_SIMPLE_SETATTR
3006         LC_EXPORT_TRUNCATE_COMPLETE_PAGE
3007
3008         # 2.6.36
3009         LC_FS_STRUCT_RWLOCK
3010         LC_SBOPS_EVICT_INODE
3011
3012         # 2.6.37
3013         LC_KERNEL_LOCKED
3014         LC_FS_STRUCT_SEQCOUNT
3015
3016         # 2.6.38
3017         LC_BLKDEV_GET_BY_DEV
3018         LC_GENERIC_PERMISSION
3019         LC_DCACHE_LOCK
3020         LC_INODE_I_RCU
3021         LC_D_COMPARE_7ARGS
3022         LC_D_DELETE_CONST
3023         LC_HAVE_BLK_PLUG
3024
3025         # 2.6.39
3026         LC_HAVE_FHANDLE_SYSCALLS
3027         LC_HAVE_FSTYPE_MOUNT
3028         LC_IOP_TRUNCATE
3029         LC_HAVE_INODE_OWNER_OR_CAPABLE
3030         LC_HAVE_SECURITY_IINITSEC
3031
3032         # 3.0
3033         LC_DIRTY_INODE_WITH_FLAG
3034         LC_SETNS
3035
3036         # 3.1
3037         LC_LM_XXX_LOCK_MANAGER_OPS
3038         LC_INODE_DIO_WAIT
3039         LC_IOP_GET_ACL
3040         LC_FILE_LLSEEK_SIZE
3041         LC_INODE_PERMISION_2ARGS
3042         LC_RADIX_EXCEPTION_ENTRY
3043         LC_HAVE_LOOP_CTL_GET_FREE
3044
3045         # 3.2
3046         LC_HAVE_PROTECT_I_NLINK
3047
3048         # 3.3
3049         LC_HAVE_MIGRATE_HEADER
3050         LC_MIGRATEPAGE_4ARGS
3051         LC_SUPEROPS_USE_DENTRY
3052         LC_INODEOPS_USE_UMODE_T
3053         LC_HAVE_CACHE_REGISTER
3054
3055         # 3.4
3056         LC_HAVE_D_MAKE_ROOT
3057         LC_KMAP_ATOMIC_HAS_1ARG
3058
3059         # 3.5
3060         LC_HAVE_CLEAR_INODE
3061         LC_HAVE_ENCODE_FH_PARENT
3062         LC_FILE_LLSEEK_SIZE_5ARG
3063
3064         # 3.6
3065         LC_DATA_FOR_LLITE_IS_LIST
3066         LC_DENTRY_OPEN_USE_PATH
3067         LC_HAVE_IOP_ATOMIC_OPEN
3068         LC_HAVE_SB_START_WRITE
3069
3070         # 3.7
3071         LC_HAVE_POSIXACL_USER_NS
3072
3073         # 3.8
3074         LC_HAVE_FILE_F_INODE
3075         LC_HAVE_FILE_INODE
3076         LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
3077
3078         # 3.9
3079         LC_HAVE_HLIST_FOR_EACH_3ARG
3080         LC_HAVE_BIO_END_SECTOR
3081         LC_HAVE_IS_SXID
3082
3083         # 3.10
3084         LC_HAVE_REMOVE_PROC_SUBTREE
3085         LC_HAVE_PROC_REMOVE
3086         LC_HAVE_PROJECT_QUOTA
3087         LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
3088
3089         # 3.11
3090         LC_INVALIDATE_RANGE
3091         LC_HAVE_DIR_CONTEXT
3092         LC_D_COMPARE_5ARGS
3093         LC_HAVE_DCOUNT
3094         LC_HAVE_DENTRY_D_U_D_ALIAS
3095         LC_HAVE_DENTRY_D_CHILD
3096         LC_PID_NS_FOR_CHILDREN
3097
3098         # 3.12
3099         LC_OLDSIZE_TRUNCATE_PAGECACHE
3100         LC_PTR_ERR_OR_ZERO_MISSING
3101         LC_KIOCB_KI_LEFT
3102
3103         # 3.13
3104         LC_VFS_RENAME_5ARGS
3105         LC_VFS_UNLINK_3ARGS
3106
3107         # 3.14
3108         LC_HAVE_BVEC_ITER
3109         LC_HAVE_TRUNCATE_IPAGES_FINAL
3110         LC_IOPS_RENAME_WITH_FLAGS
3111         LC_IOP_SET_ACL
3112
3113         # 3.15
3114         LC_VFS_RENAME_6ARGS
3115
3116         # 3.16
3117         LC_DIRECTIO_USE_ITER
3118         LC_HAVE_IOV_ITER_INIT_DIRECTION
3119         LC_HAVE_IOV_ITER_TRUNCATE
3120         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
3121
3122         # 3.17
3123         LC_HAVE_INTERVAL_BLK_INTEGRITY
3124         LC_KEY_MATCH_DATA
3125
3126         # 3.18
3127         LC_PERCPU_COUNTER_INIT
3128         LC_NFS_FILLDIR_USE_CTX
3129
3130         # 3.19
3131         LC_KIOCB_HAS_NBYTES
3132         LC_HAVE_DQUOT_QC_DQBLK
3133
3134         # 3.20
3135         LC_BACKING_DEV_INFO_REMOVAL
3136         LC_HAVE_BDI_CAP_MAP_COPY
3137
3138         # 4.0.0
3139         LC_CANCEL_DIRTY_PAGE
3140
3141         # 4.1.0
3142         LC_IOV_ITER_RW
3143         LC_HAVE_SYNC_READ_WRITE
3144
3145         # 4.2
3146         LC_NEW_CANCEL_DIRTY_PAGE
3147         LC_BIO_ENDIO_USES_ONE_ARG
3148         LC_SYMLINK_OPS_USE_NAMEIDATA
3149
3150         # 4.3
3151         LC_HAVE_INTERVAL_EXP_BLK_INTEGRITY
3152         LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
3153         LC_HAVE_CACHE_HEAD_HLIST
3154         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
3155
3156         # 4.4
3157         LC_HAVE_LOCKS_LOCK_FILE_WAIT
3158         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
3159         LC_HAVE_XATTR_HANDLER_NAME
3160         LC_HAVE_BI_CNT
3161         LC_HAVE_BI_RW
3162         LC_HAVE_SUBMIT_BIO_2ARGS
3163         LC_HAVE_CLEAN_BDEV_ALIASES
3164
3165         # 4.5
3166         LC_HAVE_FILE_DENTRY
3167
3168         # 4.5
3169         LC_HAVE_INODE_LOCK
3170         LC_HAVE_IOP_GET_LINK
3171
3172         # 4.6
3173         LC_HAVE_IN_COMPAT_SYSCALL
3174         LC_HAVE_XATTR_HANDLER_INODE_PARAM
3175
3176         # 4.7
3177         LC_DIRECTIO_2ARGS
3178         LC_GENERIC_WRITE_SYNC_2ARGS
3179         LC_FOPS_ITERATE_SHARED
3180
3181         # 4.8
3182         LC_HAVE_POSIX_ACL_VALID_USER_NS
3183         LC_D_COMPARE_4ARGS
3184         LC_FULL_NAME_HASH_3ARGS
3185         LC_STRUCT_POSIX_ACL_XATTR
3186         LC_IOP_XATTR
3187
3188         # 4.9
3189         LC_GROUP_INFO_GID
3190         LC_VFS_SETXATTR
3191         LC_POSIX_ACL_UPDATE_MODE
3192
3193         # 4.10
3194         LC_IOP_GENERIC_READLINK
3195         LC_HAVE_VM_FAULT_ADDRESS
3196
3197         # 4.11
3198         LC_INODEOPS_ENHANCED_GETATTR
3199         LC_VM_OPERATIONS_REMOVE_VMF_ARG
3200         LC_HAVE_KEY_USAGE_REFCOUNT
3201         LC_HAVE_CRYPTO_MAX_ALG_NAME_128
3202
3203         # 4.12
3204         LC_CURRENT_TIME
3205         LC_SUPER_SETUP_BDI_NAME
3206         LC_BI_STATUS
3207
3208         # 4.13
3209         LC_BIO_INTEGRITY_ENABLED
3210
3211         # 4.14
3212         LC_PAGEVEC_INIT_ONE_PARAM
3213         LC_BI_BDEV
3214
3215         # kernel patch to extend integrity interface
3216         LC_BIO_INTEGRITY_PREP_FN
3217
3218         #
3219         AS_IF([test "x$enable_server" != xno], [
3220                 LC_STACK_SIZE
3221                 LC_QUOTA64
3222                 LC_QUOTA_CONFIG
3223         ])
3224 ]) # LC_PROG_LINUX
3225
3226 #
3227 # LC_CONFIG_CLIENT
3228 #
3229 # Check whether to build the client side of Lustre
3230 #
3231 AC_DEFUN([LC_CONFIG_CLIENT], [
3232 AC_MSG_CHECKING([whether to build Lustre client support])
3233 AC_ARG_ENABLE([client],
3234         AC_HELP_STRING([--disable-client],
3235                 [disable Lustre client support]),
3236         [], [enable_client="yes"])
3237 AC_MSG_RESULT([$enable_client])
3238 ]) # LC_CONFIG_CLIENT
3239
3240 #
3241 # --enable-mpitests
3242 #
3243 AC_DEFUN([LB_CONFIG_MPITESTS], [
3244 AC_ARG_ENABLE([mpitests],
3245         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
3246                        [include mpi tests]), [
3247                 enable_mpitests="yes"
3248                 case $enableval in
3249                 yes)
3250                         MPICC_WRAPPER="mpicc"
3251                         ;;
3252                 no)
3253                         enable_mpitests="no"
3254                         ;;
3255                 *)
3256                         MPICC_WRAPPER=$enableval
3257                         ;;
3258                 esac
3259         ], [
3260                 enable_mpitests="yes"
3261                 MPICC_WRAPPER="mpicc"
3262         ])
3263
3264         if test "x$enable_mpitests" != "xno"; then
3265                 oldcc=$CC
3266                 CC=$MPICC_WRAPPER
3267                 AC_CACHE_CHECK([whether mpitests can be built],
3268                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
3269                         #include <mpi.h>
3270                         int main(void) {
3271                                 int flag;
3272                                 MPI_Initialized(&flag);
3273                                 return 0;
3274                         }
3275                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
3276                 ])
3277                 enable_mpitests=$lb_cv_mpi_tests
3278                 CC=$oldcc
3279         fi
3280         AC_SUBST(MPICC_WRAPPER)
3281 ]) # LB_CONFIG_MPITESTS
3282
3283 #
3284 # LC_CONFIG_QUOTA
3285 #
3286 # whether to enable quota support global control
3287 #
3288 AC_DEFUN([LC_CONFIG_QUOTA], [
3289 AC_MSG_CHECKING([whether to enable quota support global control])
3290 AC_ARG_ENABLE([quota],
3291         AC_HELP_STRING([--enable-quota],
3292                 [enable quota support]),
3293         [], [enable_quota="yes"])
3294 AS_IF([test "x$enable_quota" = xyes],
3295         [AC_MSG_RESULT([yes])],
3296         [AC_MSG_RESULT([no])])
3297 ]) # LC_CONFIG_QUOTA
3298
3299 #
3300 # LC_QUOTA
3301 #
3302 AC_DEFUN([LC_QUOTA], [
3303 #check global
3304 LC_CONFIG_QUOTA
3305 #check for utils
3306 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
3307         AC_CHECK_HEADER([sys/quota.h],
3308                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
3309                         [Define to 1 if you have <sys/quota.h>.])],
3310                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
3311 ])
3312 ]) # LC_QUOTA
3313
3314 #
3315 # LC_CONFIG_NODEMAP_PROC_DEBUG
3316 #
3317 # enable nodemap proc file debugging
3318 #
3319 AC_DEFUN([LC_NODEMAP_PROC_DEBUG], [
3320 AC_MSG_CHECKING([whether to enable nodemap proc debug])
3321 AC_ARG_ENABLE([nodemap_proc_debug],
3322         AC_HELP_STRING([--enable-nodemap-proc-debug],
3323                 [enable nodemap proc debug]),
3324         [], [enable_nodemap_proc_debug="no"])
3325 AC_MSG_RESULT([$enable_nodemap_proc_debug])
3326 AS_IF([test "x$enable_nodemap_proc_debug" != xno],
3327         [AC_DEFINE(NODEMAP_PROC_DEBUG, 1,
3328                 [enable nodemap proc debug support])])
3329 ]) # LC_NODEMAP_PROC_DEBUG
3330
3331 #
3332 # LC_OSD_ADDON
3333 #
3334 # configure support for optional OSD implementation
3335 #
3336 AC_DEFUN([LC_OSD_ADDON], [
3337 AC_MSG_CHECKING([whether to use OSD addon])
3338 AC_ARG_WITH([osd],
3339         AC_HELP_STRING([--with-osd=path],
3340                 [set path to optional osd]),
3341         [
3342         case "$with_osd" in
3343         no)
3344                 ENABLEOSDADDON=0
3345                 ;;
3346         *)
3347                 OSDADDON="$with_osd"
3348                 ENABLEOSDADDON=1
3349                 ;;
3350         esac
3351         ], [
3352                 ENABLEOSDADDON=0
3353         ])
3354 AS_IF([test $ENABLEOSDADDON -eq 0], [
3355         AC_MSG_RESULT([no])
3356         OSDADDON=""
3357 ], [
3358         OSDMODNAME=$(basename $OSDADDON)
3359         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
3360                 AC_MSG_RESULT([can't link])
3361                 OSDADDON=""
3362         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
3363                 AC_MSG_RESULT([$OSDMODNAME])
3364                 OSDADDON="subdir-m += $OSDMODNAME"
3365         ], [
3366                 AC_MSG_RESULT([can't link])
3367                 OSDADDON=""
3368         ])
3369 ])
3370 AC_SUBST(OSDADDON)
3371 ]) # LC_OSD_ADDON
3372
3373 #
3374 # LC_CONFIGURE
3375 #
3376 # other configure checks
3377 #
3378 AC_DEFUN([LC_CONFIGURE], [
3379 AC_MSG_NOTICE([Lustre core checks
3380 ==============================================================================])
3381
3382 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
3383         [CFLAGS="$CFLAGS -Wall -Werror"])
3384
3385 # maximum MDS thread count
3386 LC_MDS_MAX_THREADS
3387
3388 # lustre/utils/gss/gss_util.c
3389 # lustre/utils/gss/gssd_proc.c
3390 # lustre/utils/gss/krb5_util.c
3391 # lustre/utils/llog_reader.c
3392 # lustre/utils/create_iam.c
3393 # lustre/utils/libiam.c
3394 AC_CHECK_HEADERS([netdb.h endian.h])
3395 AC_CHECK_FUNCS([gethostbyname])
3396
3397 # lustre/utils/llverdev.c
3398 AC_CHECK_HEADERS([blkid/blkid.h])
3399
3400 # lustre/utils/llverfs.c
3401 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
3402
3403 # lustre/utils/lfs.c
3404 AC_CHECK_LIB([z], [crc32], [
3405              AC_CHECK_HEADER([zlib.h], [], [
3406                              AC_MSG_ERROR([zlib.h not found.])])
3407              ], [
3408              AC_MSG_ERROR([
3409 zlib library not found. Please install zlib development package.])
3410 ])
3411
3412 SELINUX=""
3413 AC_CHECK_LIB([selinux], [is_selinux_enabled],
3414         [AC_CHECK_HEADERS([selinux/selinux.h],
3415                         [SELINUX="-lselinux"
3416                         AC_DEFINE([HAVE_SELINUX], 1,
3417                                 [support for selinux ])],
3418                         [AC_MSG_WARN([
3419
3420 No libselinux-devel package found, unable to build selinux enabled tools
3421 ])
3422 ])],
3423         [AC_MSG_WARN([
3424
3425 No selinux package found, unable to build selinux enabled tools
3426 ])
3427 ])
3428 AC_SUBST(SELINUX)
3429
3430 # Super safe df
3431 AC_MSG_CHECKING([whether to report minimum OST free space])
3432 AC_ARG_ENABLE([mindf],
3433         AC_HELP_STRING([--enable-mindf],
3434                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
3435         [], [enable_mindf="no"])
3436 AC_MSG_RESULT([$enable_mindf])
3437 AS_IF([test "$enable_mindf" = "yes"],
3438         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
3439
3440 AC_MSG_CHECKING([whether to randomly failing memory alloc])
3441 AC_ARG_ENABLE([fail_alloc],
3442         AC_HELP_STRING([--disable-fail-alloc],
3443                 [disable randomly alloc failure]),
3444         [], [enable_fail_alloc="yes"])
3445 AC_MSG_RESULT([$enable_fail_alloc])
3446 AS_IF([test "x$enable_fail_alloc" != xno],
3447         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
3448                 [enable randomly alloc failure])])
3449
3450 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
3451 AC_ARG_ENABLE([invariants],
3452         AC_HELP_STRING([--enable-invariants],
3453                 [enable invariant checking (cpu intensive)]),
3454         [], [enable_invariants="no"])
3455 AC_MSG_RESULT([$enable_invariants])
3456 AS_IF([test "x$enable_invariants" = xyes],
3457         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
3458                 [enable invariant checking])])
3459
3460 AC_MSG_CHECKING([whether to track references with lu_ref])
3461 AC_ARG_ENABLE([lu_ref],
3462         AC_HELP_STRING([--enable-lu_ref],
3463                 [enable lu_ref reference tracking code]),
3464         [], [enable_lu_ref="no"])
3465 AC_MSG_RESULT([$enable_lu_ref])
3466 AS_IF([test "x$enable_lu_ref" = xyes],
3467         [AC_DEFINE([USE_LU_REF], 1,
3468                 [enable lu_ref reference tracking code])])
3469
3470 AC_MSG_CHECKING([whether to enable page state tracking])
3471 AC_ARG_ENABLE([pgstate-track],
3472         AC_HELP_STRING([--enable-pgstate-track],
3473                 [enable page state tracking]),
3474         [], [enable_pgstat_track="no"])
3475 AC_MSG_RESULT([$enable_pgstat_track])
3476 AS_IF([test "x$enable_pgstat_track" = xyes],
3477         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
3478                 [enable page state tracking code])])
3479
3480 PKG_PROG_PKG_CONFIG
3481 AC_MSG_CHECKING([systemd unit file directory])
3482 AC_ARG_WITH([systemdsystemunitdir],
3483         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
3484                 [Directory for systemd service files])],
3485         [], [with_systemdsystemunitdir=auto])
3486 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
3487         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
3488         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
3489                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
3490                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
3491                 with_systemdsystemunitdir=no],
3492         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
3493 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
3494         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
3495 AC_MSG_RESULT([$with_systemdsystemunitdir])
3496 ]) # LC_CONFIGURE
3497
3498 #
3499 # LC_CONDITIONALS
3500 #
3501 # AM_CONDITIONALS for lustre
3502 #
3503 AC_DEFUN([LC_CONDITIONALS], [
3504 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
3505 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
3506 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
3507 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
3508 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
3509 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
3510 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
3511 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
3512 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
3513 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
3514 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
3515 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
3516 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
3517 ]) # LC_CONDITIONALS
3518
3519 #
3520 # LC_CONFIG_FILES
3521 #
3522 # files that should be generated with AC_OUTPUT
3523 #
3524 AC_DEFUN([LC_CONFIG_FILES],
3525 [AC_CONFIG_FILES([
3526 lustre/Makefile
3527 lustre/autoMakefile
3528 lustre/autoconf/Makefile
3529 lustre/conf/Makefile
3530 lustre/conf/resource/Makefile
3531 lustre/contrib/Makefile
3532 lustre/doc/Makefile
3533 lustre/include/Makefile
3534 lustre/include/lustre/Makefile
3535 lustre/include/uapi/linux/lustre/Makefile
3536 lustre/kernel_patches/targets/3.10-rhel7.6.target
3537 lustre/kernel_patches/targets/3.10-rhel7.5.target
3538 lustre/kernel_patches/targets/4.14-rhel7.5.target
3539 lustre/kernel_patches/targets/4.14-rhel7.6.target
3540 lustre/kernel_patches/targets/2.6-rhel6.9.target
3541 lustre/kernel_patches/targets/2.6-rhel6.8.target
3542 lustre/kernel_patches/targets/2.6-rhel6.7.target
3543 lustre/kernel_patches/targets/2.6-rhel6.6.target
3544 lustre/kernel_patches/targets/2.6-rhel6.target
3545 lustre/kernel_patches/targets/2.6-rhel5.target
3546 lustre/kernel_patches/targets/2.6-sles11.target
3547 lustre/kernel_patches/targets/3.0-sles11.target
3548 lustre/kernel_patches/targets/3.0-sles11sp3.target
3549 lustre/kernel_patches/targets/3.0-sles11sp4.target
3550 lustre/kernel_patches/targets/3.12-sles12.target
3551 lustre/kernel_patches/targets/4.4-sles12.target
3552 lustre/kernel_patches/targets/4.4-sles12sp3.target
3553 lustre/kernel_patches/targets/2.6-fc11.target
3554 lustre/kernel_patches/targets/2.6-fc12.target
3555 lustre/kernel_patches/targets/2.6-fc15.target
3556 lustre/kernel_patches/targets/3.x-fc18.target
3557 lustre/ldlm/Makefile
3558 lustre/fid/Makefile
3559 lustre/fid/autoMakefile
3560 lustre/llite/Makefile
3561 lustre/llite/autoMakefile
3562 lustre/lov/Makefile
3563 lustre/lov/autoMakefile
3564 lustre/mdc/Makefile
3565 lustre/mdc/autoMakefile
3566 lustre/lmv/Makefile
3567 lustre/lmv/autoMakefile
3568 lustre/lfsck/Makefile
3569 lustre/lfsck/autoMakefile
3570 lustre/mdt/Makefile
3571 lustre/mdt/autoMakefile
3572 lustre/mdd/Makefile
3573 lustre/mdd/autoMakefile
3574 lustre/fld/Makefile
3575 lustre/fld/autoMakefile
3576 lustre/obdclass/Makefile
3577 lustre/obdclass/autoMakefile
3578 lustre/obdecho/Makefile
3579 lustre/obdecho/autoMakefile
3580 lustre/ofd/Makefile
3581 lustre/ofd/autoMakefile
3582 lustre/osc/Makefile
3583 lustre/osc/autoMakefile
3584 lustre/ost/Makefile
3585 lustre/ost/autoMakefile
3586 lustre/osd-ldiskfs/Makefile
3587 lustre/osd-ldiskfs/autoMakefile
3588 lustre/osd-zfs/Makefile
3589 lustre/osd-zfs/autoMakefile
3590 lustre/mgc/Makefile
3591 lustre/mgc/autoMakefile
3592 lustre/mgs/Makefile
3593 lustre/mgs/autoMakefile
3594 lustre/target/Makefile
3595 lustre/ptlrpc/Makefile
3596 lustre/ptlrpc/autoMakefile
3597 lustre/ptlrpc/gss/Makefile
3598 lustre/ptlrpc/gss/autoMakefile
3599 lustre/quota/Makefile
3600 lustre/quota/autoMakefile
3601 lustre/scripts/Makefile
3602 lustre/scripts/systemd/Makefile
3603 lustre/tests/Makefile
3604 lustre/tests/mpi/Makefile
3605 lustre/tests/kernel/Makefile
3606 lustre/tests/kernel/autoMakefile
3607 lustre/utils/Makefile
3608 lustre/utils/gss/Makefile
3609 lustre/osp/Makefile
3610 lustre/osp/autoMakefile
3611 lustre/lod/Makefile
3612 lustre/lod/autoMakefile
3613 ])
3614 ]) # LC_CONFIG_FILES