lustre/autoconf/lustre-core.m4

   1 #
   2 # LC_CONFIG_SRCDIR
   3 #
   4 # Wrapper for AC_CONFIG_SUBDIR
   5 #
   6 AC_DEFUN([LC_CONFIG_SRCDIR], [
   7 AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
   8 libcfs_is_module="yes"
   9 ldiskfs_is_ext4="yes"
  10 ])
  11
  12 #
  13 # LC_PATH_DEFAULTS
  14 #
  15 # lustre specific paths
  16 #
  17 AC_DEFUN([LC_PATH_DEFAULTS], [
  18 # ptlrpc kernel build requires this
  19 LUSTRE="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ]) # LC_PATH_DEFAULTS
  32
  33 #
  34 # LC_TARGET_SUPPORTED
  35 #
  36 # is the target os supported?
  37 #
  38 AC_DEFUN([LC_TARGET_SUPPORTED], [
  39 case $target_os in
  40         linux*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ]) # LC_TARGET_SUPPORTED
  48
  49 #
  50 # LC_CONFIG_OBD_BUFFER_SIZE
  51 #
  52 # the maximum buffer size of lctl ioctls
  53 #
  54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE], [
  55 AC_MSG_CHECKING([for maximum OBD ioctl size])
  56 AC_ARG_WITH([obd-buffer-size],
  57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  58                 [set lctl ioctl maximum bytes (default=8192)]),
  59         [OBD_BUFFER_SIZE=$with_obd_buffer_size],
  60         [OBD_BUFFER_SIZE=8192])
  61 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  62 AC_DEFINE_UNQUOTED(CONFIG_LUSTRE_OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE,
  63         [IOCTL Buffer Size])
  64 ]) # LC_CONFIG_OBD_BUFFER_SIZE
  65
  66 #
  67 # LC_GLIBC_SUPPORT_FHANDLES
  68 #
  69 AC_DEFUN([LC_GLIBC_SUPPORT_FHANDLES], [
  70 AC_CHECK_FUNCS([name_to_handle_at],
  71         [AC_DEFINE(HAVE_FHANDLE_GLIBC_SUPPORT, 1,
  72                 [file handle and related syscalls are supported])],
  73         [AC_MSG_WARN([file handle and related syscalls are not supported])])
  74 ]) # LC_GLIBC_SUPPORT_FHANDLES
  75
  76 #
  77 # LC_STACK_SIZE
  78 #
  79 # Ensure the stack size is at least 8k in Lustre server (all kernels)
  80 #
  81 AC_DEFUN([LC_STACK_SIZE], [
  82 LB_CHECK_COMPILE([if stack size is at least 8k],
  83 stack_size_8k, [
  84         #include <linux/thread_info.h>
  85 ], [
  86         #if THREAD_SIZE < 8192
  87         #error "stack size < 8192"
  88         #endif
  89 ], [], [AC_MSG_ERROR([
  90
  91 Lustre requires that Linux is configured with at least a 8KB stack.
  92 ])])
  93 ]) # LC_STACK_SIZE
  94
  95 #
  96 # LC_MDS_MAX_THREADS
  97 #
  98 # Allow the user to set the MDS thread upper limit
  99 #
 100 AC_DEFUN([LC_MDS_MAX_THREADS], [
 101 AC_MSG_CHECKING([for maximum number of MDS threads])
 102 AC_ARG_WITH([mds_max_threads],
 103         AC_HELP_STRING([--with-mds-max-threads=count],
 104                 [maximum threads available on the MDS: (default=512)]),
 105         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
 106                 [maximum number of MDS threads])])
 107 AC_MSG_RESULT([$with_mds_max_threads])
 108 ]) # LC_MDS_MAX_THREADS
 109
 110 #
 111 # LC_CONFIG_PINGER
 112 #
 113 # the pinger is temporary, until we have the recovery node in place
 114 #
 115 AC_DEFUN([LC_CONFIG_PINGER], [
 116 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 117 AC_ARG_ENABLE([pinger],
 118         AC_HELP_STRING([--disable-pinger],
 119                 [disable recovery pinger support]),
 120         [], [enable_pinger="yes"])
 121 AC_MSG_RESULT([$enable_pinger])
 122 AS_IF([test "x$enable_pinger" != xno],
 123         [AC_DEFINE(ENABLE_PINGER, 1,[Use the Pinger])])
 124 ]) # LC_CONFIG_PINGER
 125
 126 #
 127 # LC_CONFIG_CHECKSUM
 128 #
 129 # do checksum of bulk data between client and OST
 130 #
 131 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 132 AC_MSG_CHECKING([whether to enable data checksum support])
 133 AC_ARG_ENABLE([checksum],
 134         AC_HELP_STRING([--disable-checksum],
 135                 [disable data checksum support]),
 136         [], [enable_checksum="yes"])
 137 AC_MSG_RESULT([$enable_checksum])
 138 AS_IF([test "x$enable_checksum" != xno],
 139         [AC_DEFINE(ENABLE_CHECKSUM, 1, [do data checksums])])
 140 ]) # LC_CONFIG_CHECKSUM
 141
 142 #
 143 # LC_CONFIG_HEALTH_CHECK_WRITE
 144 #
 145 # Turn off the actual write to the disk
 146 #
 147 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 148 AC_MSG_CHECKING([whether to enable a write with the health check])
 149 AC_ARG_ENABLE([health_write],
 150         AC_HELP_STRING([--enable-health_write],
 151                 [enable disk writes when doing health check]),
 152         [], [enable_health_write="no"])
 153 AC_MSG_RESULT([$enable_health_write])
 154 AS_IF([test "x$enable_health_write" != xno],
 155         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 156 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 157
 158 #
 159 # LC_CONFIG_LRU_RESIZE
 160 #
 161 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 162 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 163 AC_ARG_ENABLE([lru_resize],
 164         AC_HELP_STRING([--enable-lru-resize],
 165                 [enable lru resize support]),
 166         [], [enable_lru_resize="yes"])
 167 AC_MSG_RESULT([$enable_lru_resize])
 168 AS_IF([test "x$enable_lru_resize" != xno],
 169         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 170 ]) # LC_CONFIG_LRU_RESIZE
 171
 172 #
 173 # LC_QUOTA_CONFIG
 174 #
 175 # Quota support. The kernel must support CONFIG_QUOTA.
 176 #
 177 AC_DEFUN([LC_QUOTA_CONFIG], [
 178 LB_CHECK_CONFIG_IM([QUOTA], [],
 179         [AC_MSG_ERROR([
 180
 181 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 182 ])])
 183 ]) # LC_QUOTA_CONFIG
 184
 185 #
 186 # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 187 #
 188 # truncate_complete_page() has never been exported from an upstream kernel
 189 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 190 # delete_from_page_cache() is exported from 2.6.39
 191 #
 192 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE], [
 193 LB_CHECK_EXPORT([truncate_complete_page], [mm/truncate.c],
 194         [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 195                 [kernel export truncate_complete_page])])
 196 LB_CHECK_EXPORT([remove_from_page_cache], [mm/filemap.c],
 197         [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 198                 [kernel export remove_from_page_cache])])
 199 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
 200         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 201                 [kernel export delete_from_page_cache])])
 202 ]) # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 203
 204 #
 205 # LC_CONFIG_GSS_KEYRING
 206 #
 207 # default 'auto', tests for dependencies, if found, enables;
 208 # only called if gss is enabled
 209 #
 210 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 211 AC_MSG_CHECKING([whether to enable gss keyring backend])
 212 AC_ARG_ENABLE([gss_keyring],
 213         [AC_HELP_STRING([--disable-gss-keyring],
 214                 [disable gss keyring backend])],
 215         [], [enable_gss_keyring="auto"])
 216 AC_MSG_RESULT([$enable_gss_keyring])
 217 AS_IF([test "x$enable_gss_keyring" != xno], [
 218         LB_CHECK_CONFIG_IM([KEYS], [], [
 219                 gss_keyring_conf_test="fail"
 220                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 221
 222         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 223                 gss_keyring_conf_test="fail"
 224                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 225
 226         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 227                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 228                         [Define this if you enable gss keyring backend])
 229                 enable_gss_keyring="yes"
 230         ], [
 231                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 232                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 233                 ])
 234         ])
 235 ])
 236 ]) # LC_CONFIG_GSS_KEYRING
 237
 238 #
 239 # LC_HAVE_CRED_TGCRED
 240 #
 241 # rhel7 struct cred has no member tgcred
 242 #
 243 AC_DEFUN([LC_HAVE_CRED_TGCRED], [
 244 LB_CHECK_COMPILE([if 'struct cred' has member 'tgcred'],
 245 cred_tgcred, [
 246         #include <linux/cred.h>
 247 ],[
 248         ((struct cred *)0)->tgcred = NULL;
 249 ],[
 250         AC_DEFINE(HAVE_CRED_TGCRED, 1,
 251                 [struct cred has member tgcred])
 252 ])
 253 ]) # LC_HAVE_CRED_TGCRED
 254
 255 #
 256 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 257 #
 258 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 259 #
 260 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 261 LB_CHECK_COMPILE([if 'key_type->instantiate' has two args],
 262 key_type_instantiate_2args, [
 263         #include <linux/key-type.h>
 264 ],[
 265         ((struct key_type *)0)->instantiate(0, NULL);
 266 ],[
 267         AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 268                 [key_type->instantiate has two args])
 269 ])
 270 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 271
 272 #
 273 # LC_CONFIG_SUNRPC
 274 #
 275 AC_DEFUN([LC_CONFIG_SUNRPC], [
 276 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 277         AS_IF([test "x$sunrpc_required" = xyes], [
 278                 AC_MSG_ERROR([
 279
 280 kernel SUNRPC support is required by using GSS.
 281 ])
 282         ])])
 283 ]) # LC_CONFIG_SUNRPC
 284
 285 #
 286 # LC_HAVE_CRYPTO_HASH
 287 #
 288 # 4.6 kernel commit 896545098777564212b9e91af4c973f094649aa7
 289 # removed crypto_hash support. Since GSS only works with
 290 # crypto_hash it has to be disabled for newer distros.
 291 #
 292 AC_DEFUN([LC_HAVE_CRYPTO_HASH], [
 293 LB_CHECK_COMPILE([if crypto_hash API is supported],
 294 crypto_hash, [
 295         #include <linux/crypto.h>
 296 ],[
 297         crypto_hash_digestsize(NULL);
 298 ], [], [enable_gss="no"])
 299 ])
 300 ]) # LC_HAVE_CRYPTO_HASH
 301
 302 #
 303 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 304 #
 305 # Build gss and related tools of Lustre. Currently both kernel and user space
 306 # parts are depend on linux platform.
 307 #
 308 AC_DEFUN([LC_CONFIG_GSS], [
 309 AC_MSG_CHECKING([whether to enable gss support])
 310 AC_ARG_ENABLE([gss],
 311         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 312         [], [enable_gss="auto"])
 313 AC_MSG_RESULT([$enable_gss])
 314
 315 AS_IF([test "x$enable_gss" != xno], [
 316         LC_CONFIG_GSS_KEYRING
 317         LC_HAVE_CRYPTO_HASH
 318         LC_HAVE_CRED_TGCRED
 319         LC_KEY_TYPE_INSTANTIATE_2ARGS
 320         sunrpc_required=$enable_gss
 321         LC_CONFIG_SUNRPC
 322         sunrpc_required="no"
 323
 324         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 325                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 326         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 327                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 328         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 329                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 330         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 331                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 332
 333         require_krb5=$enable_gss
 334         AC_KERBEROS_V5
 335         require_krb5="no"
 336
 337         AS_IF([test -n "$KRBDIR"], [
 338                 gss_conf_test="success"
 339         ], [
 340                 gss_conf_test="failure"
 341         ])
 342
 343         AS_IF([test "x$gss_conf_test" = xsuccess], [
 344                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 345                 enable_gss="yes"
 346         ], [
 347                 enable_gss="no"
 348         ])
 349
 350         enable_ssk=$enable_gss
 351 ])
 352 ]) # LC_CONFIG_GSS
 353
 354 # LC_OPENSSL_SSK
 355 #
 356 # OpenSSL 1.0+ return int for HMAC functions but older SLES11 versions do not
 357 AC_DEFUN([LC_OPENSSL_SSK], [
 358 AC_MSG_CHECKING([whether OpenSSL has functions needed for SSK])
 359 AS_IF([test "x$enable_ssk" != xno], [
 360 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 361         #include <openssl/hmac.h>
 362         #include <openssl/evp.h>
 363
 364         int main(void) {
 365                 int rc;
 366                 HMAC_CTX ctx;
 367                 HMAC_CTX_init(&ctx);
 368                 rc = HMAC_Init_ex(&ctx, "test", 4, EVP_md_null(), NULL);
 369         }
 370 ])],[AC_DEFINE(HAVE_OPENSSL_SSK, 1,
 371                [OpenSSL HMAC functions needed for SSK])],
 372         [enable_ssk="no"])
 373 ])
 374 AC_MSG_RESULT([$enable_ssk])
 375 ]) # LC_OPENSSL_SSK
 376
 377 # LC_INODE_PERMISION_2ARGS
 378 #
 379 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 380 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 381 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 382 # v3.1 onward have a 2 arg version (inode, mask)
 383 #
 384 AC_DEFUN([LC_INODE_PERMISION_2ARGS], [
 385 LB_CHECK_COMPILE([if 'inode_operations->permission' has two args],
 386 inode_ops_permission_2args, [
 387         #include <linux/fs.h>
 388 ],[
 389         struct inode *inode __attribute__ ((unused));
 390
 391         inode = NULL;
 392         inode->i_op->permission(NULL, 0);
 393 ],[
 394         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 395                 [inode_operations->permission has two args])
 396 ])
 397 ]) # LC_INODE_PERMISION_2ARGS
 398
 399 #
 400 # LC_BLK_QUEUE_MAX_SEGMENTS
 401 #
 402 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 403 #
 404 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS], [
 405 LB_CHECK_COMPILE([if 'blk_queue_max_segments' is defined],
 406 blk_queue_max_segments, [
 407         #include <linux/blkdev.h>
 408 ],[
 409         blk_queue_max_segments(NULL, 0);
 410 ],[
 411         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 412                 [blk_queue_max_segments is defined])
 413 ])
 414 ]) # LC_BLK_QUEUE_MAX_SEGMENTS
 415
 416 #
 417 # LC_HAVE_XATTR_HANDLER_FLAGS
 418 #
 419 # 2.6.33 added a private flag to xattr_handler
 420 #
 421 AC_DEFUN([LC_HAVE_XATTR_HANDLER_FLAGS], [
 422 LB_CHECK_COMPILE([if 'struct xattr_handler' has flags field],
 423 xattr_handler_flags, [
 424         #include <linux/xattr.h>
 425 ],[
 426         struct xattr_handler handler;
 427
 428         handler.flags = 0;
 429 ],[
 430         AC_DEFINE(HAVE_XATTR_HANDLER_FLAGS, 1, [flags field exist])
 431 ])
 432 ]) # LC_HAVE_XATTR_HANDLER_FLAGS
 433
 434 #
 435 # LC_HAVE_DQUOT_FS_DISK_QUOTA
 436 #
 437 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 438 #
 439 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA], [
 440 tmp_flags="$EXTRA_KCFLAGS"
 441 EXTRA_KCFLAGS="-Werror"
 442 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct fs_disk_quota],
 443 fs_disk_quota, [
 444         #include <linux/fs.h>
 445         #include <linux/quota.h>
 446 ],[
 447         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 448 ],[
 449         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 450                 [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 451 ],[
 452         LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct kqid & fs_disk_quota],
 453         kqid_fs_disk_quota, [
 454                 #include <linux/fs.h>
 455                 #include <linux/quota.h>
 456         ],[
 457                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 458         ],[
 459                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 460                         [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 461                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
 462                         [quotactl_ops.set_dqblk takes struct kqid])
 463         ])
 464 ])
 465 EXTRA_KCFLAGS="$tmp_flags"
 466 ]) # LC_HAVE_DQUOT_FS_DISK_QUOTA
 467
 468 #
 469 # LC_HAVE_DQUOT_SUSPEND
 470 #
 471 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 472 #
 473 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND], [
 474 LB_CHECK_COMPILE([if 'dquot_suspend' is defined],
 475 dquot_suspend, [
 476         #include <linux/quotaops.h>
 477 ],[
 478         dquot_suspend(NULL, -1);
 479 ],[
 480         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 481 ])
 482 ]) # LC_HAVE_DQUOT_SUSPEND
 483
 484 #
 485 # LC_QUOTA64
 486 #
 487 # Check if kernel has been patched for 64-bit quota limits support.
 488 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 489 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 490 # that in the absence of quotaio_v1.h in the kernel headers.
 491 #
 492 AC_DEFUN([LC_QUOTA64], [
 493 tmp_flags="$EXTRA_KCFLAGS"
 494 EXTRA_KCFLAGS="-I$LINUX/fs"
 495 LB_CHECK_COMPILE([if kernel has 64-bit quota limits support],
 496 quota64, [
 497         #include <linux/kernel.h>
 498         #include <linux/fs.h>
 499         #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 500         #include <quota/quotaio_v2.h>
 501         struct v2r1_disk_dqblk dqblk_r1;
 502         #else
 503         #include <linux/quota.h>
 504         int ver = QFMT_VFS_V1;
 505         #endif
 506 ], [], [
 507         AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 508 ],[
 509         LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],
 510                 [AC_MSG_ERROR([You have got no 64-bit kernel quota support.])])
 511 ])
 512 EXTRA_KCFLAGS=$tmp_flags
 513 ]) # LC_QUOTA64
 514
 515 #
 516 # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 517 #
 518 # 2.6.34 adds __add_wait_queue_exclusive
 519 #
 520 AC_DEFUN([LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE], [
 521 LB_CHECK_COMPILE([if '__add_wait_queue_exclusive' exists],
 522 __add_wait_queue_exclusive, [
 523         #include <linux/wait.h>
 524 ],[
 525         wait_queue_head_t queue;
 526         wait_queue_t      wait;
 527         __add_wait_queue_exclusive(&queue, &wait);
 528 ],[
 529         AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
 530                   [__add_wait_queue_exclusive exists])
 531 ])
 532 ]) # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 533
 534 #
 535 # LC_FS_STRUCT_RWLOCK
 536 #
 537 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 538 #
 539 AC_DEFUN([LC_FS_STRUCT_RWLOCK], [
 540 LB_CHECK_COMPILE([if 'fs_struct.lock' use rwlock],
 541 fs_struct_rwlock, [
 542         #include <asm/atomic.h>
 543         #include <linux/spinlock.h>
 544         #include <linux/fs_struct.h>
 545 ],[
 546         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 547 ],[
 548         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1, [fs_struct.lock use rwlock])
 549 ])
 550 ]) # LC_FS_STRUCT_RWLOCK
 551
 552 #
 553 # LC_SBOPS_EVICT_INODE
 554 #
 555 # 2.6.36 super_operations add evict_inode method. it hybird of
 556 # delete_inode & clear_inode.
 557 #
 558 AC_DEFUN([LC_SBOPS_EVICT_INODE], [
 559 LB_CHECK_COMPILE([if 'super_operations.evict_inode' exist],
 560 super_ops_evict_inode, [
 561         #include <linux/fs.h>
 562 ],[
 563         ((struct super_operations *)0)->evict_inode(NULL);
 564 ],[
 565         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 566                 [super_operations.evict_inode() is exist in kernel])
 567 ])
 568 ]) # LC_SBOPS_EVICT_INODE
 569
 570 #
 571 # LC_FILE_FSYNC
 572 #
 573 # 2.6.35 file_operations.fsync taken 2 arguments.
 574 # 3.0.0 file_operations.fsync takes 4 arguments.
 575 #
 576 AC_DEFUN([LC_FILE_FSYNC], [
 577 LB_CHECK_COMPILE([if 'file_operations.fsync' takes 4 arguments],
 578 file_ops_fsync_4args, [
 579         #include <linux/fs.h>
 580 ],[
 581         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 582 ],[
 583         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 584                 [file_operations.fsync takes 4 arguments])
 585 ],[
 586         LB_CHECK_COMPILE([if 'file_operations.fsync' takes 2 arguments],
 587         file_ops_fsync_2args, [
 588                 #include <linux/fs.h>
 589         ],[
 590                 ((struct file_operations *)0)->fsync(NULL, 0);
 591         ],[
 592                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 593                         [file_operations.fsync takes 2 arguments])
 594         ])
 595 ])
 596 ]) # LC_FILE_FSYNC
 597
 598 #
 599 # LC_KERNEL_LOCKED
 600 #
 601 # 2.6.37 remove kernel_locked
 602 #
 603 AC_DEFUN([LC_KERNEL_LOCKED], [
 604 LB_CHECK_COMPILE([if 'kernel_locked' is defined],
 605 kernel_locked, [
 606         #include <linux/smp_lock.h>
 607 ],[
 608         kernel_locked();
 609 ],[
 610         AC_DEFINE(HAVE_KERNEL_LOCKED, 1, [kernel_locked is defined])
 611 ])
 612 ]) # LC_KERNEL_LOCKED
 613
 614 #
 615 # LC_D_COMPARE_7ARGS
 616 #
 617 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 618 #
 619 AC_DEFUN([LC_D_COMPARE_7ARGS], [
 620 LB_CHECK_COMPILE([if 'dentry_operations.d_compare()' taken 7 arguments],
 621 dentry_ops_d_compare_7arg, [
 622         #include <linux/dcache.h>
 623 ],[
 624         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 625 ],[
 626         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1, [d_compare need 7 arguments])
 627 ])
 628 ]) # LC_D_COMPARE_7ARGS
 629
 630 #
 631 # LC_D_DELETE_CONST
 632 #
 633 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 634 #
 635 AC_DEFUN([LC_D_DELETE_CONST], [
 636 tmp_flags="$EXTRA_KCFLAGS"
 637 EXTRA_KCFLAGS="-Werror"
 638 LB_CHECK_COMPILE([if 'dentry_operations.d_delete()' has const declare on first parameter],
 639 dentry_ops_d_delete_1st_const, [
 640         #include <linux/dcache.h>
 641 ],[
 642         const struct dentry *d = NULL;
 643         ((struct dentry_operations*)0)->d_delete(d);
 644 ],[
 645         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 646                 [d_delete first parameter declared const])
 647 ],[
 648         AC_DEFINE(HAVE_D_DELETE_CONST, [],
 649                 [d_delete first parameter declared is not const])
 650 ])
 651 EXTRA_KCFLAGS="$tmp_flags"
 652 ]) # LC_D_DELETE_CONST
 653
 654 #
 655 # LC_DCACHE_LOCK
 656 #
 657 # 2.6.38 dcache_lock removed. rcu-walk committed.
 658 #
 659 AC_DEFUN([LC_DCACHE_LOCK], [
 660 LB_CHECK_COMPILE([if 'dcache_lock' is exist],
 661 dcache_lock, [
 662         #include <linux/dcache.h>
 663 ],[
 664         spin_lock(&dcache_lock);
 665 ],[
 666         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 667                 [dcache_lock is exist])
 668 ])
 669 ]) # LC_DCACHE_LOCK
 670
 671 #
 672 # LC_INODE_I_RCU
 673 #
 674 # 2.6.38 inode.i_rcu added.
 675 #
 676 AC_DEFUN([LC_INODE_I_RCU], [
 677 LB_CHECK_COMPILE([if 'inode.i_rcu' exists],
 678 inode_i_rcu, [
 679         #include <linux/fs.h>
 680 ],[
 681         struct inode ino;
 682         struct rcu_head rcu = {};
 683         ino.i_rcu = rcu;
 684 ],[
 685         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 686                 [inode.i_rcu exists])
 687 ])
 688 ]) # LC_INODE_I_RCU
 689
 690 #
 691 # LC_BLKDEV_GET_BY_DEV
 692 #
 693 # 2.6.38 export blkdev_get_by_dev
 694 #
 695 AC_DEFUN([LC_BLKDEV_GET_BY_DEV], [
 696 LB_CHECK_EXPORT([blkdev_get_by_dev], [fs/block_dev.c],
 697         [AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 698                 [blkdev_get_by_dev is exported by the kernel])])
 699 ]) # LC_BLKDEV_GET_BY_DEV
 700
 701 #
 702 # LC_EXPORT_SIMPLE_SETATTR
 703 #
 704 # 2.6.38 export simple_setattr
 705 #
 706 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR], [
 707 LB_CHECK_EXPORT([simple_setattr], [fs/libfs.c],
 708         [AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 709                 [simple_setattr is exported by the kernel])])
 710 ]) # LC_EXPORT_SIMPLE_SETATTR
 711
 712 #
 713 # LC_HAVE_BLK_PLUG
 714 #
 715 # 2.6.38 add struct blk_plug
 716 #
 717 AC_DEFUN([LC_HAVE_BLK_PLUG], [
 718 LB_CHECK_COMPILE([if 'struct blk_plug' exists],
 719 blk_plug, [
 720         #include <linux/blkdev.h>
 721 ],[
 722         struct blk_plug plug;
 723
 724         blk_start_plug(&plug);
 725         blk_finish_plug(&plug);
 726 ],[
 727         AC_DEFINE(HAVE_BLK_PLUG, 1,
 728                 [blk_plug struct exists])
 729 ])
 730 ]) # LC_HAVE_BLK_PLUG
 731
 732 #
 733 # LC_IOP_TRUNCATE
 734 #
 735 # truncate callback removed since 2.6.39
 736 #
 737 AC_DEFUN([LC_IOP_TRUNCATE], [
 738 LB_CHECK_COMPILE([if 'inode_operations' has '.truncate' member function],
 739 inode_ops_truncate, [
 740         #include <linux/fs.h>
 741 ],[
 742         ((struct inode_operations *)0)->truncate(NULL);
 743 ],[
 744         AC_DEFINE(HAVE_INODEOPS_TRUNCATE, 1,
 745                 [inode_operations has .truncate member function])
 746 ])
 747 ]) # LC_IOP_TRUNCATE
 748
 749 #
 750 # LC_HAVE_FSTYPE_MOUNT
 751 #
 752 # 2.6.39 replace get_sb with mount in struct file_system_type
 753 #
 754 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT], [
 755 LB_CHECK_COMPILE([if 'file_system_type' has 'mount' field],
 756 file_system_type_mount, [
 757         #include <linux/fs.h>
 758 ],[
 759         struct file_system_type fst;
 760         void *i = (void *) fst.mount;
 761 ],[
 762         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 763                 [struct file_system_type has mount field])
 764 ])
 765 ]) # LC_HAVE_FSTYPE_MOUNT
 766
 767 #
 768 # LC_HAVE_FHANDLE_SYSCALLS
 769 #
 770 # 2.6.39 The open_by_handle_at() and name_to_handle_at() system calls were
 771 # added to Linux kernel 2.6.39.
 772 # Check if client supports these functions
 773 #
 774 AC_DEFUN([LC_HAVE_FHANDLE_SYSCALLS], [
 775 LB_CHECK_CONFIG_IM([FHANDLE],[
 776         AC_DEFINE(HAVE_FHANDLE_SYSCALLS, 1,
 777                 [kernel supports fhandles and related syscalls])
 778         ])
 779 ]) # LC_HAVE_FHANDLE_SYSCALLS
 780
 781 #
 782 # LC_HAVE_INODE_OWNER_OR_CAPABLE
 783 #
 784 # 2.6.39 renames is_owner_or_cap to inode_owner_or_capable
 785 #
 786 AC_DEFUN([LC_HAVE_INODE_OWNER_OR_CAPABLE], [
 787 LB_CHECK_COMPILE([if 'inode_owner_or_capable' exist],
 788 inode_owner_or_capable, [
 789         #include <linux/fs.h>
 790 ],[
 791         inode_owner_or_capable(NULL);
 792 ],[
 793         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
 794                 [inode_owner_or_capable exist])
 795 ])
 796 ]) # LC_HAVE_INODE_OWNER_OR_CAPABLE
 797
 798 #
 799 # LC_DIRTY_INODE_WITH_FLAG
 800 #
 801 # 3.0 dirty_inode() has a flag parameter
 802 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 803 #
 804 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG], [
 805 LB_CHECK_COMPILE([if 'dirty_inode' super_operation takes flag],
 806 dirty_inode_super_operation_flag, [
 807         #include <linux/fs.h>
 808 ],[
 809         struct inode *inode;
 810         inode->i_sb->s_op->dirty_inode(NULL, 0);
 811 ],[
 812         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 813                 [dirty_inode super_operation takes flag])
 814 ])
 815 ]) # LC_DIRTY_INODE_WITH_FLAG
 816
 817 #
 818 # LC_SETNS
 819 #
 820 # 3.0 introduced setns
 821 #
 822 AC_DEFUN([LC_SETNS], [
 823 AC_CHECK_HEADERS([sched.h], [], [],
 824                  [#define _GNU_SOURCE
 825                  ])
 826 AC_CHECK_FUNCS([setns])
 827 ]) # LC_SETNS
 828
 829 #
 830 # LC_GENERIC_PERMISSION
 831 #
 832 # 2.6.38 generic_permission taken 4 parameters.
 833 # in fact, it means rcu-walk aware permission bring.
 834 #
 835 # 3.1 generic_permission taken 2 parameters.
 836 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 837 #
 838 AC_DEFUN([LC_GENERIC_PERMISSION], [
 839 LB_CHECK_COMPILE([if 'generic_permission' take 2 arguments],
 840 generic_permission_2args, [
 841         #include <linux/fs.h>
 842 ],[
 843         generic_permission(NULL, 0);
 844 ],[
 845         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 846                 [generic_permission taken 2 arguments])
 847 ],[
 848         LB_CHECK_COMPILE([if 'generic_permission' take 4 arguments],
 849         generic_permission_4args, [
 850                 #include <linux/fs.h>
 851         ],[
 852                 generic_permission(NULL, 0, 0, NULL);
 853         ],[
 854                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 855                         [generic_permission taken 4 arguments])
 856         ])
 857 ])
 858 ]) # LC_GENERIC_PERMISSION
 859
 860 #
 861 # LC_LM_XXX_LOCK_MANAGER_OPS
 862 #
 863 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 864 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 865 #
 866 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS], [
 867 LB_CHECK_COMPILE([if 'lock-manager' ops renamed to 'lm_xxx'],
 868 lock_manager_ops_lm_xxx, [
 869         #include <linux/fs.h>
 870 ],[
 871         struct lock_manager_operations lm_ops;
 872         lm_ops.lm_compare_owner = NULL;
 873 ],[
 874         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 875                 [lock-manager ops renamed to lm_xxx])
 876 ])
 877 ]) # LC_LM_XXX_LOCK_MANAGER_OPS
 878
 879 #
 880 # LC_INODE_DIO_WAIT
 881 #
 882 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait
 883 #     instead.
 884 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 885 #
 886 AC_DEFUN([LC_INODE_DIO_WAIT], [
 887 LB_CHECK_COMPILE([if 'inode->i_alloc_sem' is killed and use inode_dio_wait],
 888 inode_dio_wait, [
 889         #include <linux/fs.h>
 890 ],[
 891         inode_dio_wait((struct inode *)0);
 892 ],[
 893         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 894                 [inode->i_alloc_sem is killed and use inode_dio_wait])
 895 ])
 896 ]) # LC_INODE_DIO_WAIT
 897
 898 #
 899 # LC_IOP_GET_ACL
 900 #
 901 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 902 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 903 #
 904 AC_DEFUN([LC_IOP_GET_ACL], [
 905 LB_CHECK_COMPILE([if 'inode_operations' has '.get_acl' member function],
 906 inode_ops_get_acl, [
 907         #include <linux/fs.h>
 908 ],[
 909         struct inode_operations iop;
 910         iop.get_acl = NULL;
 911 ],[
 912         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 913                 [inode_operations has .get_acl member function])
 914 ])
 915 ]) # LC_IOP_GET_ACL
 916
 917 #
 918 # LC_FILE_LLSEEK_SIZE
 919 #
 920 # 3.1 introduced generic_file_llseek_size()
 921 #
 922 AC_DEFUN([LC_FILE_LLSEEK_SIZE], [
 923 LB_CHECK_EXPORT([generic_file_llseek_size], [fs/read_write.c],
 924         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 925                 [generic_file_llseek_size is exported by the kernel])])
 926 ]) # LC_FILE_LLSEEK_SIZE
 927
 928 #
 929 # LC_RADIX_EXCEPTION_ENTRY
 930 # 3.1 adds radix_tree_exception_entry.
 931 #
 932 AC_DEFUN([LC_RADIX_EXCEPTION_ENTRY], [
 933 LB_CHECK_COMPILE([radix_tree_exceptional_entry exist],
 934 radix_tree_exceptional_entry, [
 935         #include <linux/radix-tree.h>
 936 ],[
 937         radix_tree_exceptional_entry(NULL);
 938 ],[
 939         AC_DEFINE(HAVE_RADIX_EXCEPTION_ENTRY, 1,
 940                 [radix_tree_exceptional_entry exist])
 941 ])
 942 ]) # LC_RADIX_EXCEPTION_ENTRY
 943
 944 #
 945 # LC_HAVE_PROTECT_I_NLINK
 946 #
 947 # 3.2 protects inode->i_nlink from direct modification
 948 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 949 # at the same time adds set_nlink(), so checks set_nlink() for it.
 950 #
 951 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK], [
 952 LB_CHECK_COMPILE([if 'inode->i_nlink' is protected from direct modification],
 953 inode_i_nlink_protected, [
 954         #include <linux/fs.h>
 955 ],[
 956         struct inode i;
 957         set_nlink(&i, 1);
 958 ],[
 959         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 960                 [inode->i_nlink is protected from direct modification])
 961 ])
 962 ]) # LC_HAVE_PROTECT_I_NLINK
 963
 964 #
 965 # 2.6.39 security_inode_init_security takes a 'struct qstr' parameter
 966 #
 967 # 3.2 security_inode_init_security takes a callback to set xattrs
 968 #
 969 AC_DEFUN([LC_HAVE_SECURITY_IINITSEC], [
 970 LB_CHECK_COMPILE([if security_inode_init_security takes a callback],
 971 security_inode_init_security_callback, [
 972         #include <linux/security.h>
 973 ],[
 974         security_inode_init_security(NULL, NULL, NULL, (const initxattrs)NULL, NULL);
 975 ],[
 976         AC_DEFINE(HAVE_SECURITY_IINITSEC_CALLBACK, 1,
 977                   [security_inode_init_security takes a callback to set xattrs])
 978 ],[
 979         LB_CHECK_COMPILE([if security_inode_init_security takes a 'struct qstr' parameter],
 980         security_inode_init_security_qstr, [
 981                 #include <linux/security.h>
 982         ],[
 983                 security_inode_init_security(NULL, NULL, (struct qstr *)NULL, NULL, NULL, NULL);
 984         ],[
 985                 AC_DEFINE(HAVE_SECURITY_IINITSEC_QSTR, 1,
 986                           [security_inode_init_security takes a 'struct qstr' parameter])
 987         ])
 988 ])
 989 ]) # LC_HAVE_SECURITY_IINITSEC
 990
 991 #
 992 # LC_HAVE_MIGRATE_HEADER
 993 #
 994 # 3.3 introduces migrate_mode.h and migratepage has 4 args
 995 #
 996 AC_DEFUN([LC_HAVE_MIGRATE_HEADER], [
 997 LB_CHECK_FILE([$LINUX/include/linux/migrate.h], [
 998         AC_DEFINE(HAVE_MIGRATE_H, 1,
 999                 [kernel has include/linux/migrate.h])
1000 ],[
1001         LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h], [
1002                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
1003                         [kernel has include/linux/migrate_mode.h])
1004         ])
1005 ])
1006 ]) # LC_HAVE_MIGRATE_HEADER
1007
1008 #
1009 # LC_MIGRATEPAGE_4ARGS
1010 #
1011 AC_DEFUN([LC_MIGRATEPAGE_4ARGS], [
1012 LB_CHECK_COMPILE([if 'address_space_operations.migratepage' has 4 args],
1013 address_space_ops_migratepage_4args, [
1014         #include <linux/fs.h>
1015 #ifdef HAVE_MIGRATE_H
1016         #include <linux/migrate.h>
1017 #elif defined(HAVE_MIGRATE_MODE_H)
1018         #include <linux/migrate_mode.h>
1019 #endif
1020 ],[
1021         struct address_space_operations aops;
1022         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
1023 ],[
1024         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
1025                 [address_space_operations.migratepage has 4 args])
1026 ])
1027 ]) # LC_MIGRATEPAGE_4ARGS
1028
1029 #
1030 # LC_SUPEROPS_USE_DENTRY
1031 #
1032 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1033 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1034 #
1035 AC_DEFUN([LC_SUPEROPS_USE_DENTRY], [
1036 tmp_flags="$EXTRA_KCFLAGS"
1037 EXTRA_KCFLAGS="-Werror"
1038 LB_CHECK_COMPILE([if 'super_operations' use 'dentry' as parameter],
1039 super_ops_dentry, [
1040         #include <linux/fs.h>
1041         int show_options(struct seq_file *seq, struct dentry *root) {
1042                 return 0;
1043         }
1044 ],[
1045         struct super_operations ops;
1046         ops.show_options = show_options;
1047 ],[
1048         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1049                 [super_operations use dentry as parameter])
1050 ])
1051 EXTRA_KCFLAGS="$tmp_flags"
1052 ]) # LC_SUPEROPS_USE_DENTRY
1053
1054 #
1055 # LC_INODEOPS_USE_UMODE_T
1056 #
1057 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1058 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1059 #
1060 AC_DEFUN([LC_INODEOPS_USE_UMODE_T], [
1061 tmp_flags="$EXTRA_KCFLAGS"
1062 EXTRA_KCFLAGS="-Werror"
1063 LB_CHECK_COMPILE([if 'inode_operations' use 'umode_t' as parameter],
1064 inode_ops_umode_t, [
1065         #include <linux/fs.h>
1066         #include <linux/types.h>
1067         int my_mknod(struct inode *dir, struct dentry *dchild,
1068                      umode_t mode, dev_t dev)
1069         {
1070                 return 0;
1071         }
1072 ],[
1073         struct inode_operations ops;
1074         ops.mknod = my_mknod;
1075 ],[
1076         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1077                 [inode_operations use umode_t as parameter])
1078 ])
1079 EXTRA_KCFLAGS="$tmp_flags"
1080 ]) # LC_INODEOPS_USE_UMODE_T
1081
1082 #
1083 # LC_KMAP_ATOMIC_HAS_1ARG
1084 #
1085 # 3.4 kmap_atomic removes second argument
1086 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1087 #
1088 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG], [
1089 LB_CHECK_COMPILE([if 'kmap_atomic' has only 1 argument],
1090 kmap_atomic_1arg, [
1091         #include <linux/highmem.h>
1092 ],[
1093         kmap_atomic(NULL);
1094 ],[
1095         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1096                 [have kmap_atomic has only 1 argument])
1097 ])
1098 ]) # LC_KMAP_ATOMIC_HAS_1ARG
1099
1100 #
1101 # LC_HAVE_D_MAKE_ROOT
1102 #
1103 # 3.4 converts d_alloc_root to d_make_root
1104 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1105 #
1106 AC_DEFUN([LC_HAVE_D_MAKE_ROOT], [
1107 LB_CHECK_COMPILE([if have 'd_make_root'],
1108 d_make_root, [
1109         #include <linux/fs.h>
1110 ],[
1111         d_make_root((struct inode *)NULL);
1112 ],[
1113         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1114                 [have d_make_root])
1115 ])
1116 ]) # LC_HAVE_D_MAKE_ROOT
1117
1118 #
1119 # LC_HAVE_CACHE_REGISTER
1120 #
1121 # 3.4 cache_register/cache_unregister are removed
1122 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1123 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1124 # are defined, but not exported.
1125 # 3.3 cache_register_net/cache_unregister_net are
1126 # exported and replacing cache_register/cache_unregister in 3.4
1127 #
1128 AC_DEFUN([LC_HAVE_CACHE_REGISTER], [
1129 LB_CHECK_COMPILE([if have 'cache_register'],
1130 cache_register, [
1131         #include <linux/sunrpc/cache.h>
1132 ],[
1133         cache_register(NULL);
1134 ],[
1135         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1136                 [have cache_register])
1137 ])
1138 ]) # LC_HAVE_CACHE_REGISTER
1139
1140 #
1141 # LC_HAVE_CLEAR_INODE
1142 #
1143 # 3.5 renames end_writeback() back to clear_inode()...
1144 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1145 #
1146 AC_DEFUN([LC_HAVE_CLEAR_INODE], [
1147 LB_CHECK_COMPILE([if have 'clear_inode'],
1148 clear_inode, [
1149         #include <linux/fs.h>
1150 ],[
1151         clear_inode((struct inode *)NULL);
1152 ],[
1153         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1154                 [have clear_inode])
1155 ])
1156 ]) # LC_HAVE_CLEAR_INODE
1157
1158 #
1159 # LC_HAVE_ENCODE_FH_PARENT
1160 #
1161 # 3.5 encode_fh has parent inode passed in directly
1162 # see kernel commit b0b0382b
1163 #
1164 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT], [
1165 tmp_flags="$EXTRA_KCFLAGS"
1166 EXTRA_KCFLAGS="-Werror"
1167 LB_CHECK_COMPILE([if 'encode_fh' have parent inode as parameter],
1168 encode_fh_parent_inode, [
1169         #include <linux/exportfs.h>
1170         #include <linux/fs.h>
1171         #include <linux/types.h>
1172         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1173         {
1174                 return 0;
1175         }
1176 ],[
1177         struct export_operations exp_op;
1178         exp_op.encode_fh = ll_encode_fh;
1179 ],[
1180         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1181                 [have parent inode as parameter])
1182 ])
1183 EXTRA_KCFLAGS="$tmp_flags"
1184 ]) # LC_HAVE_ENCODE_FH_PARENT
1185
1186 #
1187 # LC_FILE_LLSEEK_SIZE_5ARG
1188 #
1189 # 3.5 has generic_file_llseek_size with 5 args
1190 #
1191 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG], [
1192 LB_CHECK_COMPILE([if Linux kernel has 'generic_file_llseek_size' with 5 args],
1193 generic_file_llseek_size_5args, [
1194         #include <linux/fs.h>
1195 ],[
1196         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1197 ], [
1198         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1199                 [kernel has generic_file_llseek_size with 5 args])
1200 ])
1201 ]) # LC_FILE_LLSEEK_SIZE_5ARG
1202
1203 #
1204 # LC_LLITE_DATA_IS_LIST
1205 #
1206 # 3.6 switch i_dentry/d_alias from list to hlist
1207 #
1208 # In the upstream kernels d_alias first changes
1209 # to a hlist and then in later version, 3.11, gets
1210 # moved to the union d_u. Due to some distros having
1211 # d_alias in the d_u union as a struct list, which
1212 # has never existed upstream stream, we can't test
1213 # if d_alias is a list or hlist directly. If ever
1214 # i_dentry and d_alias even up different combos then
1215 # the build will fail. In that case then we will need
1216 # to separate out the i_dentry and d_alias test below.
1217 #
1218 AC_DEFUN([LC_DATA_FOR_LLITE_IS_LIST], [
1219 tmp_flags="$EXTRA_KCFLAGS"
1220 EXTRA_KCFLAGS="-Werror"
1221 LB_CHECK_COMPILE([if 'i_dentry/d_alias' uses 'list'],
1222 i_dentry_d_alias_list, [
1223         #include <linux/fs.h>
1224 ],[
1225         struct inode inode;
1226         INIT_LIST_HEAD(&inode.i_dentry);
1227 ],[
1228         AC_DEFINE(DATA_FOR_LLITE_IS_LIST, 1,
1229                 [both i_dentry/d_alias uses list])
1230 ])
1231 EXTRA_KCFLAGS="$tmp_flags"
1232 ]) # LC_DATA_FOR_LLITE_IS_LIST
1233
1234 #
1235 # LC_DENTRY_OPEN_USE_PATH
1236 #
1237 # 3.6 dentry_open uses struct path as first argument
1238 # see kernel commit 765927b2
1239 #
1240 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH], [
1241 tmp_flags="$EXTRA_KCFLAGS"
1242 EXTRA_KCFLAGS="-Werror"
1243 LB_CHECK_COMPILE([if 'dentry_open' uses 'struct path' as first argument],
1244 dentry_open_path, [
1245         #include <linux/fs.h>
1246         #include <linux/path.h>
1247 ],[
1248         struct path path;
1249         dentry_open(&path, 0, NULL);
1250 ],[
1251         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1252                 [dentry_open uses struct path as first argument])
1253 ])
1254 EXTRA_KCFLAGS="$tmp_flags"
1255 ]) # LC_DENTRY_OPEN_USE_PATH
1256
1257 #
1258 # LC_HAVE_IOP_ATOMIC_OPEN
1259 #
1260 # 3.6 vfs adds iop->atomic_open
1261 #
1262 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN], [
1263 LB_CHECK_COMPILE([if 'iop' has 'atomic_open'],
1264 inode_ops_atomic_open, [
1265         #include <linux/fs.h>
1266 ],[
1267         struct inode_operations iop;
1268         iop.atomic_open = NULL;
1269 ],[
1270         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1271                 [have iop atomic_open])
1272 ])
1273 ]) # LC_HAVE_IOP_ATOMIC_OPEN
1274
1275 #
1276 # LC_HAVE_SB_START_WRITE
1277 #
1278 # RHEL6 2.6.32, 3.6 or newer support wrapped FS freeze functions
1279 #
1280 AC_DEFUN([LC_HAVE_SB_START_WRITE], [
1281 LB_CHECK_COMPILE([if kernel supports wrapped FS freeze functions],
1282 sb_start_write, [
1283         #include <linux/fs.h>
1284 ],[
1285         sb_start_write(NULL);
1286 ],[
1287         AC_DEFINE(HAVE_SB_START_WRITE, 1,
1288                 [kernel supports wrapped FS freeze functions])
1289 ])
1290 ]) # LC_HAVE_SB_START_WRITE
1291
1292 #
1293 # LC_HAVE_POSIXACL_USER_NS
1294 #
1295 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1296 #
1297 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS], [
1298 LB_CHECK_COMPILE([if 'posix_acl_to_xattr' takes 'struct user_namespace'],
1299 posix_acl_to_xattr_user_namespace, [
1300         #include <linux/fs.h>
1301         #include <linux/posix_acl_xattr.h>
1302 ],[
1303         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1304 ],[
1305         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1306                 [posix_acl_to_xattr takes struct user_namespace])
1307 ])
1308 ]) # LC_HAVE_POSIXACL_USER_NS
1309
1310 #
1311 # LC_HAVE_FILE_F_INODE
1312 #
1313 # 3.8 struct file has new member f_inode
1314 #
1315 AC_DEFUN([LC_HAVE_FILE_F_INODE], [
1316 LB_CHECK_COMPILE([if 'struct file' has member 'f_inode'],
1317 file_f_inode, [
1318         #include <linux/fs.h>
1319 ],[
1320         ((struct file *)0)->f_inode = NULL;
1321 ],[
1322         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1323                 [struct file has member f_inode])
1324 ])
1325 ]) # LC_HAVE_FILE_F_INODE
1326
1327 #
1328 # LC_HAVE_FILE_INODE
1329 #
1330 # 3.8 has introduced inline function file_inode
1331 #
1332 AC_DEFUN([LC_HAVE_FILE_INODE], [
1333 LB_CHECK_COMPILE([if file_inode() exists],
1334 file_inode, [
1335         #include <linux/fs.h>
1336 ],[
1337         file_inode(NULL);
1338 ],[
1339         AC_DEFINE(HAVE_FILE_INODE, 1,
1340                 [file_inode() has been defined])
1341 ])
1342 ]) # LC_HAVE_FILE_INODE
1343
1344 #
1345 # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1346 #
1347 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS], [
1348 LB_CHECK_COMPILE([if 'sunrpc_cache_pipe_upcall' takes 3 args],
1349 sunrpc_cache_pipe_upcall_3args, [
1350         #include <linux/sunrpc/cache.h>
1351 ],[
1352         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1353 ],[
1354         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1355                 [sunrpc_cache_pipe_upcall takes 3 args])
1356 ])
1357 ]) # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1358
1359 #
1360 # LC_HAVE_HLIST_FOR_EACH_3ARG
1361 #
1362 # 3.9 uses hlist_for_each_entry with 3 args
1363 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1364 #
1365 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG], [
1366 LB_CHECK_COMPILE([if 'hlist_for_each_entry' has 3 args],
1367 hlist_for_each_entry_3args, [
1368         #include <linux/list.h>
1369         #include <linux/fs.h>
1370 ],[
1371         struct hlist_head *head = NULL;
1372         struct inode *inode;
1373
1374         hlist_for_each_entry(inode, head, i_hash) {
1375                 continue;
1376         }
1377 ],[
1378         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1,
1379                 [hlist_for_each_entry has 3 args])
1380 ])
1381 ]) # LC_HAVE_HLIST_FOR_EACH_3ARG
1382
1383 #
1384 # LC_HAVE_BIO_END_SECTOR
1385 #
1386 # 3.9 introduces bio_end_sector macro
1387 # f73a1c7d117d07a96d89475066188a2b79e53c48
1388 #
1389 AC_DEFUN([LC_HAVE_BIO_END_SECTOR], [
1390 LB_CHECK_COMPILE([if 'bio_end_sector' is defined],
1391 bio_end_sector, [
1392         #include <linux/bio.h>
1393 ],[
1394         struct bio bio;
1395
1396         bio_end_sector(&bio);
1397 ],[
1398         AC_DEFINE(HAVE_BIO_END_SECTOR, 1,
1399                   [bio_end_sector is defined])
1400 ])
1401 ]) # LC_HAVE_BIO_END_SECTOR
1402
1403 #
1404 # 3.9 created is_sxid
1405 #
1406 AC_DEFUN([LC_HAVE_IS_SXID], [
1407 LB_CHECK_COMPILE([if 'is_sxid' is defined],
1408 is_sxid, [
1409         #include <linux/fs.h>
1410 ],[
1411         struct inode inode;
1412
1413         is_sxid(inode.i_mode);
1414 ],[
1415         AC_DEFINE(HAVE_IS_SXID, 1, [is_sxid is defined])
1416 ])
1417 ]) # LC_HAVE_IS_SXID
1418
1419 #
1420 # LC_HAVE_REMOVE_PROC_SUBTREE
1421 #
1422 # 3.10 introduced remove_proc_subtree
1423 #
1424 AC_DEFUN([LC_HAVE_REMOVE_PROC_SUBTREE], [
1425 LB_CHECK_COMPILE([if 'remove_proc_subtree' is defined],
1426 remove_proc_subtree, [
1427         #include <linux/proc_fs.h>
1428 ],[
1429         remove_proc_subtree(NULL, NULL);
1430 ], [
1431         AC_DEFINE(HAVE_REMOVE_PROC_SUBTREE, 1,
1432                   [remove_proc_subtree is defined])
1433 ])
1434 ]) # LC_HAVE_REMOVE_PROC_SUBTREE
1435
1436 #
1437 # LC_HAVE_PROC_REMOVE
1438 #
1439 # 3.10 introduced proc_remove
1440 #
1441 AC_DEFUN([LC_HAVE_PROC_REMOVE], [
1442 LB_CHECK_COMPILE([if 'proc_remove' is defined],
1443 proc_remove, [
1444         #include <linux/proc_fs.h>
1445 ],[
1446         proc_remove(NULL);
1447 ], [
1448         AC_DEFINE(HAVE_PROC_REMOVE, 1,
1449                   [proc_remove is defined])
1450 ])
1451 ]) # LC_HAVE_PROC_REMOVE
1452
1453 AC_DEFUN([LC_HAVE_PROJECT_QUOTA], [
1454 LB_CHECK_COMPILE([if get_projid exists],
1455 get_projid, [
1456         #include <linux/quota.h>
1457 ],[
1458         struct dquot_operations ops;
1459
1460         ops.get_projid(NULL, NULL);
1461 ],[
1462         AC_DEFINE(HAVE_PROJECT_QUOTA, 1,
1463                 [get_projid function exists])
1464 ])
1465 ]) # LC_HAVE_PROJECT_QUOTA
1466
1467
1468 #
1469 # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1470 #
1471 # 3.10 introduced security_dentry_init_security()
1472 #
1473 AC_DEFUN([LC_HAVE_SECURITY_DENTRY_INIT_SECURITY], [
1474 LB_CHECK_COMPILE([if 'security_dentry_init_security' is defined],
1475 security_dentry_init_security, [
1476         #include <linux/security.h>
1477 ],[
1478         security_dentry_init_security(NULL, 0, NULL, NULL, NULL);
1479 ],[
1480         AC_DEFINE(HAVE_SECURITY_DENTRY_INIT_SECURITY, 1,
1481                 [security_dentry_init_security' is defined])
1482 ])
1483 ]) # LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
1484
1485 #
1486 # LC_INVALIDATE_RANGE
1487 #
1488 # 3.11 invalidatepage requires the length of the range to invalidate
1489 #
1490 AC_DEFUN([LC_INVALIDATE_RANGE], [
1491 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
1492 address_space_ops_invalidatepage_3args, [
1493         #include <linux/fs.h>
1494 ],[
1495         struct address_space_operations a_ops;
1496         a_ops.invalidatepage(NULL, 0, 0);
1497 ],[
1498         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
1499                 [address_space_operations.invalidatepage needs 3 arguments])
1500 ])
1501 ]) # LC_INVALIDATE_RANGE
1502
1503 #
1504 # LC_HAVE_DIR_CONTEXT
1505 #
1506 # 3.11 readdir now takes the new struct dir_context
1507 #
1508 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
1509 LB_CHECK_COMPILE([if 'dir_context' exist],
1510 dir_context, [
1511         #include <linux/fs.h>
1512 ],[
1513         struct dir_context ctx;
1514         ctx.pos = 0;
1515 ],[
1516         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
1517                 [dir_context exist])
1518 ])
1519 ]) # LC_HAVE_DIR_CONTEXT
1520
1521 #
1522 # LC_D_COMPARE_5ARGS
1523 #
1524 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1525 #
1526 AC_DEFUN([LC_D_COMPARE_5ARGS], [
1527 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
1528 d_compare_5args, [
1529         #include <linux/dcache.h>
1530 ],[
1531         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1532 ],[
1533         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1534                 [d_compare need 5 arguments])
1535 ])
1536 ]) # LC_D_COMPARE_5ARGS
1537
1538 #
1539 # LC_HAVE_DCOUNT
1540 #
1541 # 3.11 need to access d_count to get dentry reference count
1542 #
1543 AC_DEFUN([LC_HAVE_DCOUNT], [
1544 LB_CHECK_COMPILE([if 'd_count' exist],
1545 d_count, [
1546         #include <linux/dcache.h>
1547 ],[
1548         struct dentry de;
1549         d_count(&de);
1550 ],[
1551         AC_DEFINE(HAVE_D_COUNT, 1,
1552                 [d_count exist])
1553 ])
1554 ]) # LC_HAVE_DCOUNT
1555
1556 #
1557 # LC_PID_NS_FOR_CHILDREN
1558 #
1559 # 3.11 replaces pid_ns by pid_ns_for_children in struct nsproxy
1560 #
1561 AC_DEFUN([LC_PID_NS_FOR_CHILDREN], [
1562 LB_CHECK_COMPILE([if 'struct nsproxy' has 'pid_ns_for_children'],
1563 pid_ns_for_children, [
1564         #include <linux/nsproxy.h>
1565 ],[
1566         struct nsproxy ns;
1567         ns.pid_ns_for_children = NULL;
1568 ],[
1569         AC_DEFINE(HAVE_PID_NS_FOR_CHILDREN, 1,
1570                   ['struct nsproxy' has 'pid_ns_for_children'])
1571 ])
1572 ]) # LC_PID_NS_FOR_CHILDREN
1573
1574 #
1575 # LC_OLDSIZE_TRUNCATE_PAGECACHE
1576 #
1577 # 3.12 truncate_pagecache without oldsize parameter
1578 #
1579 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
1580 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
1581 truncate_pagecache_old_size, [
1582         #include <linux/mm.h>
1583 ],[
1584         truncate_pagecache(NULL, 0, 0);
1585 ],[
1586         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
1587                 [with oldsize])
1588 ])
1589 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
1590
1591 #
1592 # LC_HAVE_DENTRY_D_U_D_ALIAS
1593 #
1594 # 3.11 kernel moved d_alias to the union d_u in struct dentry
1595 #
1596 # Some distros move d_alias to d_u but it is still a struct list
1597 #
1598 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
1599 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
1600         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
1601         d_alias, [
1602                 #include <linux/list.h>
1603                 #include <linux/dcache.h>
1604         ],[
1605                 struct dentry de;
1606                 INIT_LIST_HEAD(&de.d_u.d_alias);
1607         ],[
1608                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1609                         [list dentry.d_u.d_alias exist])
1610         ])
1611 ],[
1612         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
1613         d_alias, [
1614                 #include <linux/list.h>
1615                 #include <linux/dcache.h>
1616         ],[
1617                 struct dentry de;
1618                 INIT_HLIST_NODE(&de.d_u.d_alias);
1619         ],[
1620                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1621                         [hlist dentry.d_u.d_alias exist])
1622         ])
1623 ])
1624 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
1625
1626 #
1627 # LC_HAVE_DENTRY_D_CHILD
1628 #
1629 # 3.11 kernel d_child has been moved out of the union d_u
1630 # in struct dentry
1631 #
1632 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
1633 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
1634 d_child, [
1635         #include <linux/list.h>
1636         #include <linux/dcache.h>
1637 ],[
1638         struct dentry de;
1639         INIT_LIST_HEAD(&de.d_child);
1640 ],[
1641         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
1642                 [dentry.d_child exist])
1643 ])
1644 ]) # LC_HAVE_DENTRY_D_CHILD
1645
1646 #
1647 # LC_KIOCB_KI_LEFT
1648 #
1649 # 3.12 ki_left removed from struct kiocb
1650 #
1651 AC_DEFUN([LC_KIOCB_KI_LEFT], [
1652 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
1653 kiocb_ki_left, [
1654         #include <linux/aio.h>
1655 ],[
1656         ((struct kiocb*)0)->ki_left = 0;
1657 ],[
1658         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
1659                 [ki_left exist])
1660 ])
1661 ]) # LC_KIOCB_KI_LEFT
1662
1663 #
1664 # LC_VFS_RENAME_5ARGS
1665 #
1666 # 3.13 has vfs_rename with 5 args
1667 #
1668 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
1669 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
1670 vfs_rename_5args, [
1671         #include <linux/fs.h>
1672 ],[
1673         vfs_rename(NULL, NULL, NULL, NULL, NULL);
1674 ], [
1675         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
1676                 [kernel has vfs_rename with 5 args])
1677 ])
1678 ]) # LC_VFS_RENAME_5ARGS
1679
1680 #
1681 # LC_VFS_UNLINK_3ARGS
1682 #
1683 # 3.13 has vfs_unlink with 3 args
1684 #
1685 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
1686 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
1687 vfs_unlink_3args, [
1688         #include <linux/fs.h>
1689 ],[
1690         vfs_unlink(NULL, NULL, NULL);
1691 ], [
1692         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
1693                 [kernel has vfs_unlink with 3 args])
1694 ])
1695 ]) # LC_VFS_UNLINK_3ARGS
1696
1697 #
1698 # LC_HAVE_BVEC_ITER
1699 #
1700 # 3.14 move some of its data in struct bio into the new
1701 # struct bvec_iter
1702 #
1703 AC_DEFUN([LC_HAVE_BVEC_ITER], [
1704 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
1705 have_bvec_iter, [
1706         #include <linux/bio.h>
1707 ],[
1708         struct bvec_iter iter;
1709         iter.bi_bvec_done = 0;
1710 ], [
1711         AC_DEFINE(HAVE_BVEC_ITER, 1,
1712                 [kernel has struct bvec_iter])
1713 ])
1714 ]) # LC_HAVE_BVEC_ITER
1715
1716 #
1717 # LC_IOP_SET_ACL
1718 #
1719 # 3.14 adds set_acl method to inode_operations
1720 # see kernel commit 893d46e443346370cd4ea81d9d35f72952c62a37
1721 #
1722 AC_DEFUN([LC_IOP_SET_ACL], [
1723 LB_CHECK_COMPILE([if 'inode_operations' has '.set_acl' member function],
1724 inode_ops_set_acl, [
1725         #include <linux/fs.h>
1726 ],[
1727         struct inode_operations iop;
1728         iop.set_acl = NULL;
1729 ],[
1730         AC_DEFINE(HAVE_IOP_SET_ACL, 1,
1731                 [inode_operations has .set_acl member function])
1732 ])
1733 ]) # LC_IOP_SET_ACL
1734
1735 #
1736 # LC_HAVE_BI_CNT
1737 #
1738 # 4.4 redefined bi_cnt as __bi_cnt
1739 #
1740 AC_DEFUN([LC_HAVE_BI_CNT], [
1741 LB_CHECK_COMPILE([if Linux kernel has bi_cnt in struct bio],
1742 have_bi_cnt, [
1743         #include <asm/atomic.h>
1744         #include <linux/bio.h>
1745 ],[
1746         struct bio bio;
1747         int cnt;
1748         cnt = atomic_read(&bio.bi_cnt);
1749 ], [
1750         AC_DEFINE(HAVE_BI_CNT, 1,
1751                 [struct bio has bi_cnt])
1752 ])
1753 ]) # LC_HAVE_BI_CNT
1754
1755 #
1756 # LC_HAVE_TRUNCATE_IPAGE_FINAL
1757 #
1758 # 3.14 bring truncate_inode_pages_final for evict_inode
1759 #
1760 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
1761 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
1762 truncate_ipages_final, [
1763         #include <linux/mm.h>
1764 ],[
1765         truncate_inode_pages_final(NULL);
1766 ], [
1767         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
1768                 [kernel has truncate_inode_pages_final])
1769 ])
1770 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
1771
1772 #
1773 # LC_IOPS_RENAME_WITH_FLAGS
1774 #
1775 # 3.14 has inode_operations->rename with 5 args
1776 # commit 520c8b16505236fc82daa352e6c5e73cd9870cff
1777 #
1778 AC_DEFUN([LC_IOPS_RENAME_WITH_FLAGS], [
1779 LB_CHECK_COMPILE([if 'inode_operations->rename' taken flags as argument],
1780 iops_rename_with_flags, [
1781         #include <linux/fs.h>
1782 ],[
1783         struct inode *i1 = NULL, *i2 = NULL;
1784         struct dentry *d1 = NULL, *d2 = NULL;
1785         int rc;
1786         rc = ((struct inode_operations *)0)->rename(i1, d1, i2, d2, 0);
1787 ], [
1788         AC_DEFINE(HAVE_IOPS_RENAME_WITH_FLAGS, 1,
1789                 [inode_operations->rename need flags as argument])
1790 ])
1791 ]) # LC_IOPS_RENAME_WITH_FLAGS
1792
1793 #
1794 # LC_VFS_RENAME_6ARGS
1795 #
1796 # 3.15 has vfs_rename with 6 args
1797 #
1798 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
1799 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
1800 vfs_rename_6args, [
1801         #include <linux/fs.h>
1802 ],[
1803         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
1804 ], [
1805         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
1806                 [kernel has vfs_rename with 6 args])
1807 ])
1808 ]) # LC_VFS_RENAME_6ARGS
1809
1810 #
1811 # LC_DIRECTIO_USE_ITER
1812 #
1813 # 3.16 kernel changes direct IO to use iov_iter
1814 #
1815 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
1816 LB_CHECK_COMPILE([if direct IO uses iov_iter],
1817 direct_io_iter, [
1818         #include <linux/fs.h>
1819 ],[
1820         struct address_space_operations ops;
1821         struct iov_iter *iter = NULL;
1822         loff_t offset = 0;
1823
1824         ops.direct_IO(0, NULL, iter, offset);
1825 ],[
1826         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
1827                 [direct IO uses iov_iter])
1828 ])
1829 ]) # LC_DIRECTIO_USE_ITER
1830
1831 #
1832 # LC_HAVE_IOV_ITER_INIT_DIRECTION
1833 #
1834 #
1835 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
1836 #      changed iov_iter_init api to start accepting a tag
1837 #      that defines if its a read or write operation
1838 #
1839 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
1840 tmp_flags="$EXTRA_KCFLAGS"
1841 EXTRA_KCFLAGS="-Werror"
1842 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
1843 iter_init, [
1844         #include <linux/uio.h>
1845         #include <linux/fs.h>
1846 ],[
1847         const struct iovec *iov = NULL;
1848
1849         iov_iter_init(NULL, READ, iov, 1, 0);
1850 ],[
1851         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
1852                 [iov_iter_init handles directional tag])
1853 ])
1854 EXTRA_KCFLAGS="$tmp_flags"
1855 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
1856
1857 #
1858 # LC_HAVE_IOV_ITER_TRUNCATE
1859 #
1860 #
1861 # 3.16 introduces a new API iov_iter_truncate()
1862 #
1863 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
1864 tmp_flags="$EXTRA_KCFLAGS"
1865 EXTRA_KCFLAGS="-Werror"
1866 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
1867 iter_truncate, [
1868         #include <linux/uio.h>
1869         #include <linux/fs.h>
1870 ],[
1871         struct iov_iter *i = NULL;
1872
1873         iov_iter_truncate(i, 0);
1874 ],[
1875         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
1876 ])
1877 EXTRA_KCFLAGS="$tmp_flags"
1878 ]) # LC_HAVE_IOV_ITER_TRUNCATE
1879
1880 #
1881 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1882 #
1883 # 3.16 introduces [read|write]_iter to struct file_operations
1884 #
1885 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1886 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
1887 file_function_iter, [
1888         #include <linux/fs.h>
1889 ],[
1890         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
1891         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
1892 ],[
1893         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
1894                 [file_operations.[read|write]_iter functions exist])
1895 ])
1896 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1897
1898 #
1899 # LC_KEY_MATCH_DATA
1900 #
1901 # 3.17  replaces key_type::match with match_preparse
1902 #       and has new struct key_match_data
1903 #
1904 AC_DEFUN([LC_KEY_MATCH_DATA], [
1905 LB_CHECK_COMPILE([if struct key_match field exist],
1906 key_match, [
1907         #include <linux/key-type.h>
1908 ],[
1909         struct key_match_data data;
1910 ],[
1911         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
1912                 [struct key_match_data exist])
1913 ])
1914 ]) # LC_KEY_MATCH_DATA
1915
1916 #
1917 # LC_NFS_FILLDIR_USE_CTX
1918 #
1919 # 3.18 kernel moved from void cookie to struct dir_context
1920 #
1921 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
1922 tmp_flags="$EXTRA_KCFLAGS"
1923 EXTRA_KCFLAGS="-Werror"
1924 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
1925 filldir_ctx, [
1926         #include <linux/fs.h>
1927 ],[
1928         int filldir(struct dir_context *ctx, const char* name,
1929                     int i, loff_t off, u64 tmp, unsigned temp)
1930         {
1931                 return 0;
1932         }
1933
1934         struct dir_context ctx = {
1935                 .actor = filldir,
1936         };
1937
1938         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
1939 ],[
1940         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
1941                 [filldir_t needs struct dir_context as argument])
1942 ])
1943 EXTRA_KCFLAGS="$tmp_flags"
1944 ]) # LC_NFS_FILLDIR_USE_CTX
1945
1946 #
1947 # LC_PERCPU_COUNTER_INIT
1948 #
1949 # 3.18  For kernels 3.18 and after percpu_counter_init starts
1950 #       to pass a GFP_* memory allocation flag for internal
1951 #       memory allocation purposes.
1952 #
1953 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
1954 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
1955 percpu_counter_init, [
1956         #include <linux/percpu_counter.h>
1957 ],[
1958         percpu_counter_init(NULL, 0, GFP_KERNEL);
1959 ],[
1960         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
1961                 [percpu_counter_init uses GFP_* flag])
1962 ])
1963 ]) # LC_PERCPU_COUNTER_INIT
1964
1965 #
1966 # LC_KIOCB_HAS_NBYTES
1967 #
1968 # 3.19 kernel removed ki_nbytes from struct kiocb
1969 #
1970 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
1971 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
1972 ki_nbytes, [
1973         #include <linux/fs.h>
1974 ],[
1975         struct kiocb iocb;
1976
1977         iocb.ki_nbytes = 0;
1978 ],[
1979         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
1980 ])
1981 ]) # LC_KIOCB_HAS_NBYTES
1982
1983 #
1984 # LC_HAVE_DQUOT_QC_DQBLK
1985 #
1986 # 3.19 has quotactl_ops->[sg]et_dqblk that take struct kqid and qc_dqblk
1987 # Added in commit 14bf61ffe
1988 #
1989 AC_DEFUN([LC_HAVE_DQUOT_QC_DQBLK], [
1990 tmp_flags="$EXTRA_KCFLAGS"
1991 EXTRA_KCFLAGS="-Werror"
1992 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct qc_dqblk],
1993 qc_dqblk, [
1994         #include <linux/fs.h>
1995         #include <linux/quota.h>
1996 ],[
1997         ((struct quotactl_ops *)0)->set_dqblk(NULL, *((struct kqid*)0), (struct qc_dqblk*)0);
1998 ],[
1999         AC_DEFINE(HAVE_DQUOT_QC_DQBLK, 1,
2000                 [quotactl_ops.set_dqblk takes struct qc_dqblk])
2001         AC_DEFINE(HAVE_DQUOT_KQID, 1,
2002                 [quotactl_ops.set_dqblk takes struct kqid])
2003 ])
2004 EXTRA_KCFLAGS="$tmp_flags"
2005 ]) # LC_HAVE_DQUOT_QC_DQBLK
2006
2007 #
2008 # LC_BACKING_DEV_INFO_REMOVAL
2009 #
2010 # 3.20 kernel removed backing_dev_info from address_space
2011 #
2012 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
2013 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
2014 backing_dev_info, [
2015         #include <linux/fs.h>
2016 ],[
2017         struct address_space mapping;
2018
2019         mapping.backing_dev_info = NULL;
2020 ],[
2021         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
2022 ])
2023 ]) # LC_BACKING_DEV_INFO_REMOVAL
2024
2025 #
2026 # LC_HAVE_BDI_CAP_MAP_COPY
2027 #
2028 # 3.20  removed mmap handling for backing devices since
2029 #       it breaks on non-MMU systems. See kernel commit
2030 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
2031 #
2032 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
2033 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
2034 bdi_cap_map_copy, [
2035         #include <linux/backing-dev.h>
2036 ],[
2037         struct backing_dev_info info;
2038
2039         info.capabilities = BDI_CAP_MAP_COPY;
2040 ],[
2041         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
2042                 [BDI_CAP_MAP_COPY exist])
2043 ])
2044 ]) # LC_HAVE_BDI_CAP_MAP_COPY
2045
2046 #
2047 # LC_CANCEL_DIRTY_PAGE
2048 #
2049 # 4.0.0 kernel removed cancel_dirty_page
2050 #
2051 AC_DEFUN([LC_CANCEL_DIRTY_PAGE], [
2052 LB_CHECK_COMPILE([if cancel_dirty_page still exist],
2053 cancel_dirty_page, [
2054         #include <linux/mm.h>
2055 ],[
2056         cancel_dirty_page(NULL, PAGE_SIZE);
2057 ],[
2058         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
2059                 [cancel_dirty_page is still available])
2060 ])
2061 ]) # LC_CANCEL_DIRTY_PAGE
2062
2063 #
2064 # LC_IOV_ITER_RW
2065 #
2066 # 4.1 kernel has iov_iter_rw
2067 #
2068 AC_DEFUN([LC_IOV_ITER_RW], [
2069 LB_CHECK_COMPILE([if iov_iter_rw exist],
2070 iov_iter_rw, [
2071         #include <linux/fs.h>
2072         #include <linux/uio.h>
2073 ],[
2074         struct iov_iter *iter = NULL;
2075
2076         iov_iter_rw(iter);
2077 ],[
2078         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
2079                 [iov_iter_rw exist])
2080 ])
2081 ]) # LC_IOV_ITER_RW
2082
2083 #
2084 # LC_HAVE_SYNC_READ_WRITE
2085 #
2086 # 4.1 new_sync_[read|write] no longer exported
2087 #
2088 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
2089 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
2090         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
2091                         [new_sync_[read|write] is exported by the kernel])])
2092 ]) # LC_HAVE_SYNC_READ_WRITE
2093
2094 #
2095 # LC_NEW_CANCEL_DIRTY_PAGE
2096 #
2097 # 4.2 kernel has new cancel_dirty_page
2098 #
2099 AC_DEFUN([LC_NEW_CANCEL_DIRTY_PAGE], [
2100 LB_CHECK_COMPILE([if cancel_dirty_page with one argument exist],
2101 new_cancel_dirty_page, [
2102         #include <linux/mm.h>
2103 ],[
2104         cancel_dirty_page(NULL);
2105 ],[
2106         AC_DEFINE(HAVE_NEW_CANCEL_DIRTY_PAGE, 1,
2107                 [cancel_dirty_page with one arguement is available])
2108 ])
2109 ]) # LC_NEW_CANCEL_DIRTY_PAGE
2110
2111 #
2112 # LC_SYMLINK_OPS_USE_NAMEIDATA
2113 #
2114 # For the 4.2+ kernels the file system internal symlink api no
2115 # longer uses struct nameidata as a argument
2116 #
2117 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
2118 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
2119 symlink_use_nameidata, [
2120         #include <linux/namei.h>
2121         #include <linux/fs.h>
2122 ],[
2123         struct nameidata *nd = NULL;
2124
2125         ((struct inode_operations *)0)->follow_link(NULL, nd);
2126         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
2127 ],[
2128         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
2129                 [symlink inode operations need struct nameidata argument])
2130 ])
2131 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
2132
2133 #
2134 # LC_BIO_ENDIO_USES_ONE_ARG
2135 #
2136 # 4.2 kernel bio_endio now only takes one argument
2137 #
2138 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
2139 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
2140 bio_endio, [
2141         #include <linux/bio.h>
2142 ],[
2143         bio_endio(NULL);
2144 ],[
2145         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
2146                 [bio_endio takes only one argument])
2147 ])
2148 ]) # LC_BIO_ENDIO_USES_ONE_ARG
2149
2150 #
2151 # LC_HAVE_LOOP_CTL_GET_FREE
2152 #
2153 # 4.x kernel have moved userspace APIs to
2154 # the separate directory and all of them
2155 # support LOOP_CTL_GET_FREE
2156 #
2157 AC_DEFUN([LC_HAVE_LOOP_CTL_GET_FREE], [
2158 LB_CHECK_FILE([$LINUX/include/linux/loop.h], [
2159         LB_CHECK_COMPILE([if have 'HAVE_LOOP_CTL_GET_FREE'],
2160         LOOP_CTL_GET_FREE, [
2161                 #include <linux/loop.h>
2162         ],[
2163                 int i;
2164
2165                 i = LOOP_CTL_GET_FREE;
2166         ],[
2167                 AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2168                         [LOOP_CTL_GET_FREE exist])
2169         ])
2170 ],[
2171         AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2172                 [kernel has LOOP_CTL_GET_FREE])
2173 ])
2174 ]) # LC_HAVE_LOOP_CTL_GET_FREE
2175
2176 #
2177 # LC_HAVE_CACHE_HEAD_HLIST
2178 #
2179 # 4.3 kernel swiched to hlist for cache_head
2180 #
2181 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
2182 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
2183 cache_head_has_hlist, [
2184         #include <linux/sunrpc/cache.h>
2185 ],[
2186         do {} while(sizeof(((struct cache_head *)0)->cache_list));
2187 ],[
2188         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
2189                 [cache_head has hlist cache_list])
2190 ])
2191 ]) # LC_HAVE_CACHE_HEAD_HLIST
2192
2193 #
2194 # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2195 #
2196 # Kernel version 4.3 commit e409de992e3ea3674393465f07cc71c948edd87a
2197 # simplified xattr_handler handling by passing in the handler pointer
2198 #
2199 AC_DEFUN([LC_HAVE_XATTR_HANDLER_SIMPLIFIED], [
2200 tmp_flags="$EXTRA_KCFLAGS"
2201 EXTRA_KCFLAGS="-Werror"
2202 LB_CHECK_COMPILE([if 'struct xattr_handler' functions pass in handler pointer],
2203 xattr_handler_simplified, [
2204         #include <linux/xattr.h>
2205 ],[
2206         struct xattr_handler handler;
2207
2208         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, 0);
2209         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, 0, 0);
2210 ],[
2211         AC_DEFINE(HAVE_XATTR_HANDLER_SIMPLIFIED, 1, [handler pointer is parameter])
2212 ])
2213 EXTRA_KCFLAGS="$tmp_flags"
2214 ]) # LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2215
2216 #
2217 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2218 #
2219 # 4.4 kernel have moved locks API users to
2220 # locks_lock_inode_wait()
2221 #
2222 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
2223 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
2224 locks_lock_file_wait, [
2225         #include <linux/fs.h>
2226 ],[
2227         locks_lock_file_wait(NULL, NULL);
2228 ],[
2229         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
2230                 [kernel has locks_lock_file_wait])
2231 ])
2232 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2233
2234 #
2235 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2236 #
2237 # 4.4 kernel merged type-specific data with the payload data for keys
2238 #
2239 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
2240 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
2241 key_payload_data_array, [
2242         #include <linux/key.h>
2243 ],[
2244         ((struct key *)0)->payload.data[0] = NULL;
2245 ],[
2246         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
2247 ])
2248 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2249
2250 #
2251 # LC_HAVE_FILE_DENTRY
2252 #
2253 # 4.5 adds wrapper file_dentry
2254 #
2255 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
2256 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
2257 file_dentry, [
2258         #include <linux/fs.h>
2259 ],[
2260         file_dentry(NULL);
2261 ], [
2262         AC_DEFINE(HAVE_FILE_DENTRY, 1,
2263                 [kernel has file_dentry])
2264 ])
2265 ]) # LC_HAVE_FILE_DENTRY
2266
2267 #
2268 # LC_HAVE_INODE_LOCK
2269 #
2270 # 4.5 introduced inode_lock
2271 #
2272 AC_DEFUN([LC_HAVE_INODE_LOCK], [
2273 LB_CHECK_COMPILE([if 'inode_lock' is defined],
2274 inode_lock, [
2275         #include <linux/fs.h>
2276 ],[
2277         inode_lock(NULL);
2278 ], [
2279         AC_DEFINE(HAVE_INODE_LOCK, 1,
2280                   [inode_lock is defined])
2281 ])
2282 ]) # LC_HAVE_INODE_LOCK
2283
2284 #
2285 # LC_HAVE_IOP_GET_LINK
2286 #
2287 # 4.5 vfs replaced iop->follow_link with
2288 # iop->get_link
2289 #
2290 AC_DEFUN([LC_HAVE_IOP_GET_LINK], [
2291 LB_CHECK_COMPILE([if 'iop' has 'get_link'],
2292 inode_ops_get_link, [
2293         #include <linux/fs.h>
2294 ],[
2295         struct inode_operations iop;
2296         iop.get_link = NULL;
2297 ],[
2298         AC_DEFINE(HAVE_IOP_GET_LINK, 1,
2299                 [have iop get_link])
2300 ])
2301 ]) # LC_HAVE_IOP_GET_LINK
2302
2303 #
2304 # LC_HAVE_IN_COMPAT_SYSCALL
2305 #
2306 # 4.6 renamed is_compat_task to in_compat_syscall
2307 #
2308 AC_DEFUN([LC_HAVE_IN_COMPAT_SYSCALL], [
2309 LB_CHECK_COMPILE([if 'in_compat_syscall' is defined],
2310 in_compat_syscall, [
2311         #include <linux/compat.h>
2312 ],[
2313         in_compat_syscall();
2314 ],[
2315         AC_DEFINE(HAVE_IN_COMPAT_SYSCALL, 1,
2316                 [have in_compat_syscall])
2317 ])
2318 ]) # LC_HAVE_IN_COMPAT_SYSCALL
2319
2320 #
2321 # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2322 #
2323 # Kernel version 4.6 commit b296821a7c42fa58baa17513b2b7b30ae66f3336
2324 # and commit 5930122683dff58f0846b0f0405b4bd598a3ba6a added inode parameter
2325 # to xattr_handler functions
2326 #
2327 AC_DEFUN([LC_HAVE_XATTR_HANDLER_INODE_PARAM], [
2328 tmp_flags="$EXTRA_KCFLAGS"
2329 EXTRA_KCFLAGS="-Werror"
2330 LB_CHECK_COMPILE([if 'struct xattr_handler' functions have inode parameter],
2331 xattr_handler_inode_param, [
2332         #include <linux/xattr.h>
2333 ],[
2334         const struct xattr_handler handler;
2335
2336         ((struct xattr_handler *)0)->get(&handler, NULL, NULL, NULL, NULL, 0);
2337         ((struct xattr_handler *)0)->set(&handler, NULL, NULL, NULL, NULL, 0, 0);
2338 ],[
2339         AC_DEFINE(HAVE_XATTR_HANDLER_INODE_PARAM, 1, [needs inode parameter])
2340 ])
2341 EXTRA_KCFLAGS="$tmp_flags"
2342 ]) # LC_HAVE_XATTR_HANDLER_INODE_PARAM
2343
2344 #
2345 # LC_DIRECTIO_2ARGS
2346 #
2347 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2348 # direct-io: eliminate the offset argument to ->direct_IO
2349 #
2350 AC_DEFUN([LC_DIRECTIO_2ARGS], [
2351 LB_CHECK_COMPILE([if '->direct_IO()' taken 2 arguments],
2352 direct_io_2args, [
2353         #include <linux/fs.h>
2354 ],[
2355         struct address_space_operations ops;
2356         struct iov_iter *iter = NULL;
2357         struct kiocb *iocb = NULL;
2358         int rc;
2359         rc = ops.direct_IO(iocb, iter);
2360 ],[
2361         AC_DEFINE(HAVE_DIRECTIO_2ARGS, 1,
2362                 [direct_IO need 2 arguments])
2363 ])
2364 ]) # LC_DIRECTIO_2ARGS
2365
2366 #
2367 # LC_GENERIC_WRITE_SYNC_2ARGS
2368 #
2369 # Kernel version 4.7 commit c8b8e32d700fe943a935e435ae251364d016c497
2370 # direct-io: eliminate the offset argument to ->direct_IO
2371 #
2372 AC_DEFUN([LC_GENERIC_WRITE_SYNC_2ARGS], [
2373 LB_CHECK_COMPILE([if 'generic_write_sync()' taken 2 arguments],
2374 generic_write_sync_2args, [
2375         #include <linux/fs.h>
2376 ],[
2377         struct kiocb *iocb = NULL;
2378         ssize_t rc;
2379         rc = generic_write_sync(iocb, 0);
2380 ],[
2381         AC_DEFINE(HAVE_GENERIC_WRITE_SYNC_2ARGS, 1,
2382                 [generic_write_sync need 2 arguments])
2383 ])
2384 ]) # LC_GENERIC_WRITE_SYNC_2ARGS
2385
2386 #
2387 # LC_HAVE_POSIX_ACL_VALID_USER_NS
2388 #
2389 # 4.8 posix_acl_valid takes struct user_namespace
2390 #
2391 AC_DEFUN([LC_HAVE_POSIX_ACL_VALID_USER_NS], [
2392 LB_CHECK_COMPILE([if 'posix_acl_valid' takes 'struct user_namespace'],
2393 posix_acl_valid, [
2394         #include <linux/fs.h>
2395         #include <linux/posix_acl.h>
2396 ],[
2397         posix_acl_valid((struct user_namespace*)NULL, (const struct posix_acl*)NULL);
2398 ],[
2399         AC_DEFINE(HAVE_POSIX_ACL_VALID_USER_NS, 1,
2400                 [posix_acl_valid takes struct user_namespace])
2401 ])
2402 ]) # LC_HAVE_POSIX_ACL_VALID_USER_NS
2403
2404 #
2405 # LC_D_COMPARE_4ARGS
2406 #
2407 # Kernel version 4.8 commit 6fa67e707559303e086303aeecc9e8b91ef497d5
2408 # get rid of 'parent' argument of ->d_compare()
2409 #
2410 AC_DEFUN([LC_D_COMPARE_4ARGS], [
2411 LB_CHECK_COMPILE([if 'd_compare' taken 4 arguments],
2412 d_compare_4args, [
2413         #include <linux/dcache.h>
2414 ],[
2415         ((struct dentry_operations*)0)->d_compare(NULL,0,NULL,NULL);
2416 ],[
2417         AC_DEFINE(HAVE_D_COMPARE_4ARGS, 1,
2418                 [d_compare need 4 arguments])
2419 ])
2420 ]) # LC_D_COMPARE_4ARGS
2421
2422 #
2423 # LC_FULL_NAME_HASH_3ARGS
2424 #
2425 # Kernel version 4.8 commit 8387ff2577eb9ed245df9a39947f66976c6bcd02
2426 # vfs: make the string hashes salt the hash
2427 #
2428 AC_DEFUN([LC_FULL_NAME_HASH_3ARGS], [
2429 LB_CHECK_COMPILE([if 'full_name_hash' taken 3 arguments],
2430 full_name_hash_3args, [
2431         #include <linux/stringhash.h>
2432 ],[
2433         unsigned int hash;
2434         hash = full_name_hash(NULL,NULL,0);
2435 ],[
2436         AC_DEFINE(HAVE_FULL_NAME_HASH_3ARGS, 1,
2437                 [full_name_hash need 3 arguments])
2438 ])
2439 ]) # LC_FULL_NAME_HASH_3ARGS
2440
2441 #
2442 # LC_STRUCT_POSIX_ACL_XATTR
2443 #
2444 # Kernel version 4.8 commit 2211d5ba5c6c4e972ba6dbc912b2897425ea6621
2445 # posix_acl: xattr representation cleanups
2446 #
2447 AC_DEFUN([LC_STRUCT_POSIX_ACL_XATTR], [
2448 LB_CHECK_COMPILE([if 'struct posix_acl_xattr_{header,entry}' defined],
2449 struct_posix_acl_xattr, [
2450         #include <linux/fs.h>
2451         #include <linux/posix_acl_xattr.h>
2452 ],[
2453         struct posix_acl_xattr_header *h = NULL;
2454         struct posix_acl_xattr_entry  *e;
2455         e = (void *)(h + 1);
2456 ],[
2457         AC_DEFINE(HAVE_STRUCT_POSIX_ACL_XATTR, 1,
2458                 [struct posix_acl_xattr_{header,entry} defined])
2459 ])
2460 ]) # LC_STRUCT_POSIX_ACL_XATTR
2461
2462 #
2463 # LC_IOP_XATTR
2464 #
2465 # Kernel version 4.8 commit fd50ecaddf8372a1d96e0daeaac0f93cf04e4d42
2466 # removed {get,set,remove}xattr inode operations
2467 #
2468 AC_DEFUN([LC_IOP_XATTR], [
2469 LB_CHECK_COMPILE([if 'inode_operations' has {get,set,remove}xattr members],
2470 inode_ops_xattr, [
2471         #include <linux/fs.h>
2472 ],[
2473         struct inode_operations iop;
2474         iop.setxattr = NULL;
2475         iop.getxattr = NULL;
2476         iop.removexattr = NULL;
2477 ],[
2478         AC_DEFINE(HAVE_IOP_XATTR, 1,
2479                 [inode_operations has {get,set,remove}xattr members])
2480 ])
2481 ]) # LC_IOP_XATTR
2482
2483 #
2484 # LC_GROUP_INFO_GID
2485 #
2486 # Kernel version 4.9 commit 81243eacfa400f5f7b89f4c2323d0de9982bb0fb
2487 # cred: simpler, 1D supplementary groups
2488 #
2489 AC_DEFUN([LC_GROUP_INFO_GID], [
2490 LB_CHECK_COMPILE([if 'struct group_info' has member 'gid'],
2491 group_info_gid, [
2492         #include <linux/cred.h>
2493 ],[
2494         kgid_t *p;
2495         p = ((struct group_info *)0)->gid;
2496 ],[
2497         AC_DEFINE(HAVE_GROUP_INFO_GID, 1,
2498                 [struct group_info has member gid])
2499 ])
2500 ]) # LC_GROUP_INFO_GID
2501
2502 #
2503 # LC_VFS_SETXATTR
2504 #
2505 # Kernel version 4.9 commit 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4
2506 # added __vfs_{get,set,remove}xattr helpers
2507 #
2508 AC_DEFUN([LC_VFS_SETXATTR], [
2509 LB_CHECK_COMPILE([if '__vfs_setxattr' helper is available],
2510 vfs_setxattr, [
2511         #include <linux/xattr.h>
2512 ],[
2513         __vfs_setxattr(NULL, NULL, NULL, NULL, 0, 0);
2514 ],[
2515         AC_DEFINE(HAVE_VFS_SETXATTR, 1,
2516                 ['__vfs_setxattr is available])
2517 ])
2518 ]) # LC_VFS_SETXATTR
2519
2520 #
2521 # LC_IOP_GENERIC_READLINK
2522 #
2523 # Kernel version 4.10 commit dfeef68862edd7d4bafe68ef7aeb5f658ef24bb5
2524 # removed generic_readlink from individual file systems
2525 #
2526 AC_DEFUN([LC_IOP_GENERIC_READLINK], [
2527 LB_CHECK_COMPILE([if 'generic_readlink' still exist],
2528 inode_ops_readlink, [
2529         #include <linux/fs.h>
2530 ],[
2531         struct inode_operations iop;
2532         iop.readlink = generic_readlink;
2533 ],[
2534         AC_DEFINE(HAVE_IOP_GENERIC_READLINK, 1,
2535                 [generic_readlink has been removed])
2536 ])
2537 ]) # LC_IOP_GENERIC_READLINK
2538
2539 #
2540 # LC_HAVE_VM_FAULT_ADDRESS
2541 #
2542 # Kernel version 4.10 commit 1a29d85eb0f19b7d8271923d8917d7b4f5540b3e
2543 # removed virtual_address field. Need to use address field instead
2544 #
2545 AC_DEFUN([LC_HAVE_VM_FAULT_ADDRESS], [
2546 LB_CHECK_COMPILE([if 'struct vm_fault' replaced virtual_address with address field],
2547 vm_fault_address, [
2548         #include <linux/mm.h>
2549 ],[
2550         struct vm_fault vmf;
2551         vmf.address = NULL;
2552 ],[
2553         AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
2554                 [virtual_address has been replaced by address field])
2555 ])
2556 ]) # LC_HAVE_VM_FAULT_ADDRESS
2557
2558 #
2559 # LC_INODEOPS_ENHANCED_GETATTR
2560 #
2561 # Kernel version 4.11 commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
2562 # expanded getattr to be able to get more stat information.
2563 #
2564 AC_DEFUN([LC_INODEOPS_ENHANCED_GETATTR], [
2565 LB_CHECK_COMPILE([if 'inode_operations' getattr member can gather advance stats],
2566 getattr_path, [
2567         #include <linux/fs.h>
2568 ],[
2569         struct path path;
2570
2571         ((struct inode_operations *)1)->getattr(&path, NULL, 0, 0);
2572 ],[
2573         AC_DEFINE(HAVE_INODEOPS_ENHANCED_GETATTR, 1,
2574                 [inode_operations .getattr member function can gather advance stats])
2575 ])
2576 ]) # LC_INODEOPS_ENHANCED_GETATTR
2577
2578 #
2579 # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2580 #
2581 # Kernel version 4.11 commit 11bac80004499ea59f361ef2a5516c84b6eab675
2582 # removed struct vm_area_struct as an argument for vm_operations since
2583 # in the same kernel version struct vma_area_struct was folded into
2584 # struct vm_fault.
2585 #
2586 AC_DEFUN([LC_VM_OPERATIONS_REMOVE_VMF_ARG], [
2587 LB_CHECK_COMPILE([if 'struct vm_operations' removed struct vm_area_struct],
2588 vm_operations_no_vm_area_struct, [
2589         #include <linux/mm.h>
2590 ],[
2591         struct vm_fault vmf;
2592
2593         ((struct vm_operations_struct *)0)->fault(&vmf);
2594         ((struct vm_operations_struct *)0)->page_mkwrite(&vmf);
2595 ],[
2596         AC_DEFINE(HAVE_VM_OPS_USE_VM_FAULT_ONLY, 1,
2597                 ['struct vm_operations' remove struct vm_area_struct argument])
2598 ])
2599 ]) # LC_VM_OPERATIONS_REMOVE_VMF_ARG
2600
2601 #
2602 # Kernel version 4.12 commit 47f38c539e9a42344ff5a664942075bd4df93876
2603 # CURRENT_TIME is not 64 bit time safe so it was replaced with
2604 # current_time()
2605 #
2606 AC_DEFUN([LC_CURRENT_TIME], [
2607 LB_CHECK_COMPILE([if CURRENT_TIME has been replaced with current_time],
2608 current_time, [
2609         #include <linux/fs.h>
2610 ],[
2611         struct timespec ts = current_time(NULL);
2612 ],[
2613         AC_DEFINE(HAVE_CURRENT_TIME, 1,
2614                 [current_time() has replaced CURRENT_TIME])
2615 ])
2616 ]) # LIBCFS_CURRENT_TIME
2617
2618 #
2619 # LC_PROG_LINUX
2620 #
2621 # Lustre linux kernel checks
2622 #
2623 AC_DEFUN([LC_PROG_LINUX], [
2624         AC_MSG_NOTICE([Lustre kernel checks
2625 ==============================================================================])
2626
2627         LC_CONFIG_PINGER
2628         LC_CONFIG_CHECKSUM
2629         LC_CONFIG_HEALTH_CHECK_WRITE
2630         LC_CONFIG_LRU_RESIZE
2631
2632         LC_GLIBC_SUPPORT_FHANDLES
2633         LC_CONFIG_GSS
2634         LC_OPENSSL_SSK
2635
2636         # 2.6.32
2637         LC_BLK_QUEUE_MAX_SEGMENTS
2638
2639         # 2.6.33
2640         LC_HAVE_XATTR_HANDLER_FLAGS
2641
2642         # 2.6.34
2643         LC_HAVE_DQUOT_FS_DISK_QUOTA
2644         LC_HAVE_DQUOT_SUSPEND
2645         LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
2646
2647         # 2.6.35, 3.0.0
2648         LC_FILE_FSYNC
2649         LC_EXPORT_SIMPLE_SETATTR
2650         LC_EXPORT_TRUNCATE_COMPLETE_PAGE
2651
2652         # 2.6.36
2653         LC_FS_STRUCT_RWLOCK
2654         LC_SBOPS_EVICT_INODE
2655
2656         # 2.6.37
2657         LC_KERNEL_LOCKED
2658
2659         # 2.6.38
2660         LC_BLKDEV_GET_BY_DEV
2661         LC_GENERIC_PERMISSION
2662         LC_DCACHE_LOCK
2663         LC_INODE_I_RCU
2664         LC_D_COMPARE_7ARGS
2665         LC_D_DELETE_CONST
2666         LC_HAVE_BLK_PLUG
2667
2668         # 2.6.39
2669         LC_HAVE_FHANDLE_SYSCALLS
2670         LC_HAVE_FSTYPE_MOUNT
2671         LC_IOP_TRUNCATE
2672         LC_HAVE_INODE_OWNER_OR_CAPABLE
2673         LC_HAVE_SECURITY_IINITSEC
2674
2675         # 3.0
2676         LC_DIRTY_INODE_WITH_FLAG
2677         LC_SETNS
2678
2679         # 3.1
2680         LC_LM_XXX_LOCK_MANAGER_OPS
2681         LC_INODE_DIO_WAIT
2682         LC_IOP_GET_ACL
2683         LC_FILE_LLSEEK_SIZE
2684         LC_INODE_PERMISION_2ARGS
2685         LC_RADIX_EXCEPTION_ENTRY
2686         LC_HAVE_LOOP_CTL_GET_FREE
2687
2688         # 3.2
2689         LC_HAVE_PROTECT_I_NLINK
2690
2691         # 3.3
2692         LC_HAVE_MIGRATE_HEADER
2693         LC_MIGRATEPAGE_4ARGS
2694         LC_SUPEROPS_USE_DENTRY
2695         LC_INODEOPS_USE_UMODE_T
2696         LC_HAVE_CACHE_REGISTER
2697
2698         # 3.4
2699         LC_HAVE_D_MAKE_ROOT
2700         LC_KMAP_ATOMIC_HAS_1ARG
2701
2702         # 3.5
2703         LC_HAVE_CLEAR_INODE
2704         LC_HAVE_ENCODE_FH_PARENT
2705         LC_FILE_LLSEEK_SIZE_5ARG
2706
2707         # 3.6
2708         LC_DATA_FOR_LLITE_IS_LIST
2709         LC_DENTRY_OPEN_USE_PATH
2710         LC_HAVE_IOP_ATOMIC_OPEN
2711         LC_HAVE_SB_START_WRITE
2712
2713         # 3.7
2714         LC_HAVE_POSIXACL_USER_NS
2715
2716         # 3.8
2717         LC_HAVE_FILE_F_INODE
2718         LC_HAVE_FILE_INODE
2719         LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
2720
2721         # 3.9
2722         LC_HAVE_HLIST_FOR_EACH_3ARG
2723         LC_HAVE_BIO_END_SECTOR
2724         LC_HAVE_IS_SXID
2725
2726         # 3.10
2727         LC_HAVE_REMOVE_PROC_SUBTREE
2728         LC_HAVE_PROC_REMOVE
2729         LC_HAVE_PROJECT_QUOTA
2730         LC_HAVE_SECURITY_DENTRY_INIT_SECURITY
2731
2732         # 3.11
2733         LC_INVALIDATE_RANGE
2734         LC_HAVE_DIR_CONTEXT
2735         LC_D_COMPARE_5ARGS
2736         LC_HAVE_DCOUNT
2737         LC_HAVE_DENTRY_D_U_D_ALIAS
2738         LC_HAVE_DENTRY_D_CHILD
2739         LC_PID_NS_FOR_CHILDREN
2740
2741         # 3.12
2742         LC_OLDSIZE_TRUNCATE_PAGECACHE
2743         LC_KIOCB_KI_LEFT
2744
2745         # 3.13
2746         LC_VFS_RENAME_5ARGS
2747         LC_VFS_UNLINK_3ARGS
2748
2749         # 3.14
2750         LC_HAVE_BVEC_ITER
2751         LC_HAVE_TRUNCATE_IPAGES_FINAL
2752         LC_IOPS_RENAME_WITH_FLAGS
2753         LC_IOP_SET_ACL
2754
2755         # 3.15
2756         LC_VFS_RENAME_6ARGS
2757
2758         # 3.16
2759         LC_DIRECTIO_USE_ITER
2760         LC_HAVE_IOV_ITER_INIT_DIRECTION
2761         LC_HAVE_IOV_ITER_TRUNCATE
2762         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
2763
2764         # 3.17
2765         LC_KEY_MATCH_DATA
2766
2767         # 3.18
2768         LC_PERCPU_COUNTER_INIT
2769         LC_NFS_FILLDIR_USE_CTX
2770
2771         # 3.19
2772         LC_KIOCB_HAS_NBYTES
2773         LC_HAVE_DQUOT_QC_DQBLK
2774
2775         # 3.20
2776         LC_BACKING_DEV_INFO_REMOVAL
2777         LC_HAVE_BDI_CAP_MAP_COPY
2778
2779         # 4.0.0
2780         LC_CANCEL_DIRTY_PAGE
2781
2782         # 4.1.0
2783         LC_IOV_ITER_RW
2784         LC_HAVE_SYNC_READ_WRITE
2785
2786         # 4.2
2787         LC_NEW_CANCEL_DIRTY_PAGE
2788         LC_BIO_ENDIO_USES_ONE_ARG
2789         LC_SYMLINK_OPS_USE_NAMEIDATA
2790
2791         # 4.3
2792         LC_HAVE_CACHE_HEAD_HLIST
2793         LC_HAVE_XATTR_HANDLER_SIMPLIFIED
2794
2795         # 4.4
2796         LC_HAVE_LOCKS_LOCK_FILE_WAIT
2797         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2798         LC_HAVE_BI_CNT
2799
2800         # 4.5
2801         LC_HAVE_FILE_DENTRY
2802
2803         # 4.5
2804         LC_HAVE_INODE_LOCK
2805         LC_HAVE_IOP_GET_LINK
2806
2807         # 4.6
2808         LC_HAVE_IN_COMPAT_SYSCALL
2809         LC_HAVE_XATTR_HANDLER_INODE_PARAM
2810
2811         # 4.7
2812         LC_DIRECTIO_2ARGS
2813         LC_GENERIC_WRITE_SYNC_2ARGS
2814
2815         # 4.8
2816         LC_HAVE_POSIX_ACL_VALID_USER_NS
2817         LC_D_COMPARE_4ARGS
2818         LC_FULL_NAME_HASH_3ARGS
2819         LC_STRUCT_POSIX_ACL_XATTR
2820         LC_IOP_XATTR
2821
2822         # 4.9
2823         LC_GROUP_INFO_GID
2824         LC_VFS_SETXATTR
2825
2826         # 4.10
2827         LC_IOP_GENERIC_READLINK
2828         LC_HAVE_VM_FAULT_ADDRESS
2829
2830         # 4.11
2831         LC_INODEOPS_ENHANCED_GETATTR
2832         LC_VM_OPERATIONS_REMOVE_VMF_ARG
2833
2834         # 4.12
2835         LC_CURRENT_TIME
2836
2837         #
2838         AS_IF([test "x$enable_server" != xno], [
2839                 LC_STACK_SIZE
2840                 LC_QUOTA64
2841                 LC_QUOTA_CONFIG
2842         ])
2843 ]) # LC_PROG_LINUX
2844
2845 #
2846 # LC_CONFIG_CLIENT
2847 #
2848 # Check whether to build the client side of Lustre
2849 #
2850 AC_DEFUN([LC_CONFIG_CLIENT], [
2851 AC_MSG_CHECKING([whether to build Lustre client support])
2852 AC_ARG_ENABLE([client],
2853         AC_HELP_STRING([--disable-client],
2854                 [disable Lustre client support]),
2855         [], [enable_client="yes"])
2856 AC_MSG_RESULT([$enable_client])
2857 ]) # LC_CONFIG_CLIENT
2858
2859 #
2860 # --enable-mpitests
2861 #
2862 AC_DEFUN([LB_CONFIG_MPITESTS], [
2863 AC_ARG_ENABLE([mpitests],
2864         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
2865                        [include mpi tests]), [
2866                 enable_mpitests="yes"
2867                 case $enableval in
2868                 yes)
2869                         MPICC_WRAPPER="mpicc"
2870                         ;;
2871                 no)
2872                         enable_mpitests="no"
2873                         ;;
2874                 *)
2875                         MPICC_WRAPPER=$enableval
2876                         ;;
2877                 esac
2878         ], [
2879                 enable_mpitests="yes"
2880                 MPICC_WRAPPER="mpicc"
2881         ])
2882
2883         if test "x$enable_mpitests" != "xno"; then
2884                 oldcc=$CC
2885                 CC=$MPICC_WRAPPER
2886                 AC_CACHE_CHECK([whether mpitests can be built],
2887                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2888                         #include <mpi.h>
2889                         int main(void) {
2890                                 int flag;
2891                                 MPI_Initialized(&flag);
2892                                 return 0;
2893                         }
2894                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
2895                 ])
2896                 enable_mpitests=$lb_cv_mpi_tests
2897                 CC=$oldcc
2898         fi
2899         AC_SUBST(MPICC_WRAPPER)
2900 ]) # LB_CONFIG_MPITESTS
2901
2902 #
2903 # LC_CONFIG_QUOTA
2904 #
2905 # whether to enable quota support global control
2906 #
2907 AC_DEFUN([LC_CONFIG_QUOTA], [
2908 AC_MSG_CHECKING([whether to enable quota support global control])
2909 AC_ARG_ENABLE([quota],
2910         AC_HELP_STRING([--enable-quota],
2911                 [enable quota support]),
2912         [], [enable_quota="yes"])
2913 AS_IF([test "x$enable_quota" = xyes],
2914         [AC_MSG_RESULT([yes])],
2915         [AC_MSG_RESULT([no])])
2916 ]) # LC_CONFIG_QUOTA
2917
2918 #
2919 # LC_QUOTA
2920 #
2921 AC_DEFUN([LC_QUOTA], [
2922 #check global
2923 LC_CONFIG_QUOTA
2924 #check for utils
2925 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
2926         AC_CHECK_HEADER([sys/quota.h],
2927                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
2928                         [Define to 1 if you have <sys/quota.h>.])],
2929                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2930 ])
2931 ]) # LC_QUOTA
2932
2933 #
2934 # LC_CONFIG_NODEMAP_PROC_DEBUG
2935 #
2936 # enable nodemap proc file debugging
2937 #
2938 AC_DEFUN([LC_NODEMAP_PROC_DEBUG], [
2939 AC_MSG_CHECKING([whether to enable nodemap proc debug])
2940 AC_ARG_ENABLE([nodemap_proc_debug],
2941         AC_HELP_STRING([--enable-nodemap-proc-debug],
2942                 [enable nodemap proc debug]),
2943         [], [enable_nodemap_proc_debug="no"])
2944 AC_MSG_RESULT([$enable_nodemap_proc_debug])
2945 AS_IF([test "x$enable_nodemap_proc_debug" != xno],
2946         [AC_DEFINE(NODEMAP_PROC_DEBUG, 1,
2947                 [enable nodemap proc debug support])])
2948 ]) # LC_NODEMAP_PROC_DEBUG
2949
2950 #
2951 # LC_OSD_ADDON
2952 #
2953 # configure support for optional OSD implementation
2954 #
2955 AC_DEFUN([LC_OSD_ADDON], [
2956 AC_MSG_CHECKING([whether to use OSD addon])
2957 AC_ARG_WITH([osd],
2958         AC_HELP_STRING([--with-osd=path],
2959                 [set path to optional osd]),
2960         [
2961         case "$with_osd" in
2962         no)
2963                 ENABLEOSDADDON=0
2964                 ;;
2965         *)
2966                 OSDADDON="$with_osd"
2967                 ENABLEOSDADDON=1
2968                 ;;
2969         esac
2970         ], [
2971                 ENABLEOSDADDON=0
2972         ])
2973 AS_IF([test $ENABLEOSDADDON -eq 0], [
2974         AC_MSG_RESULT([no])
2975         OSDADDON=""
2976 ], [
2977         OSDMODNAME=$(basename $OSDADDON)
2978         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
2979                 AC_MSG_RESULT([can't link])
2980                 OSDADDON=""
2981         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
2982                 AC_MSG_RESULT([$OSDMODNAME])
2983                 OSDADDON="subdir-m += $OSDMODNAME"
2984         ], [
2985                 AC_MSG_RESULT([can't link])
2986                 OSDADDON=""
2987         ])
2988 ])
2989 AC_SUBST(OSDADDON)
2990 ]) # LC_OSD_ADDON
2991
2992 #
2993 # LC_CONFIGURE
2994 #
2995 # other configure checks
2996 #
2997 AC_DEFUN([LC_CONFIGURE], [
2998 AC_MSG_NOTICE([Lustre core checks
2999 ==============================================================================])
3000
3001 LC_CONFIG_OBD_BUFFER_SIZE
3002
3003 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
3004         [CFLAGS="$CFLAGS -Wall -Werror"])
3005
3006 # maximum MDS thread count
3007 LC_MDS_MAX_THREADS
3008
3009 # lustre/utils/gss/gss_util.c
3010 # lustre/utils/gss/gssd_proc.c
3011 # lustre/utils/gss/krb5_util.c
3012 # lustre/utils/llog_reader.c
3013 # lustre/utils/create_iam.c
3014 # lustre/utils/libiam.c
3015 AC_CHECK_HEADERS([netdb.h endian.h])
3016 AC_CHECK_FUNCS([gethostbyname])
3017
3018 # lustre/utils/llverdev.c
3019 AC_CHECK_HEADERS([blkid/blkid.h])
3020
3021 # lustre/utils/llverfs.c
3022 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
3023
3024 SELINUX=""
3025 AC_CHECK_LIB([selinux], [is_selinux_enabled],
3026         [AC_CHECK_HEADERS([selinux/selinux.h],
3027                         [SELINUX="-lselinux"
3028                         AC_DEFINE([HAVE_SELINUX], 1,
3029                                 [support for selinux ])],
3030                         [AC_MSG_WARN([
3031
3032 No libselinux-devel package found, unable to build selinux enabled tools
3033 ])
3034 ])],
3035         [AC_MSG_WARN([
3036
3037 No selinux package found, unable to build selinux enabled tools
3038 ])
3039 ])
3040 AC_SUBST(SELINUX)
3041
3042 # Super safe df
3043 AC_MSG_CHECKING([whether to report minimum OST free space])
3044 AC_ARG_ENABLE([mindf],
3045         AC_HELP_STRING([--enable-mindf],
3046                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
3047         [], [enable_mindf="no"])
3048 AC_MSG_RESULT([$enable_mindf])
3049 AS_IF([test "$enable_mindf" = "yes"],
3050         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
3051
3052 AC_MSG_CHECKING([whether to randomly failing memory alloc])
3053 AC_ARG_ENABLE([fail_alloc],
3054         AC_HELP_STRING([--disable-fail-alloc],
3055                 [disable randomly alloc failure]),
3056         [], [enable_fail_alloc="yes"])
3057 AC_MSG_RESULT([$enable_fail_alloc])
3058 AS_IF([test "x$enable_fail_alloc" != xno],
3059         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
3060                 [enable randomly alloc failure])])
3061
3062 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
3063 AC_ARG_ENABLE([invariants],
3064         AC_HELP_STRING([--enable-invariants],
3065                 [enable invariant checking (cpu intensive)]),
3066         [], [enable_invariants="no"])
3067 AC_MSG_RESULT([$enable_invariants])
3068 AS_IF([test "x$enable_invariants" = xyes],
3069         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
3070                 [enable invariant checking])])
3071
3072 AC_MSG_CHECKING([whether to track references with lu_ref])
3073 AC_ARG_ENABLE([lu_ref],
3074         AC_HELP_STRING([--enable-lu_ref],
3075                 [enable lu_ref reference tracking code]),
3076         [], [enable_lu_ref="no"])
3077 AC_MSG_RESULT([$enable_lu_ref])
3078 AS_IF([test "x$enable_lu_ref" = xyes],
3079         [AC_DEFINE([USE_LU_REF], 1,
3080                 [enable lu_ref reference tracking code])])
3081
3082 AC_MSG_CHECKING([whether to enable page state tracking])
3083 AC_ARG_ENABLE([pgstate-track],
3084         AC_HELP_STRING([--enable-pgstate-track],
3085                 [enable page state tracking]),
3086         [], [enable_pgstat_track="no"])
3087 AC_MSG_RESULT([$enable_pgstat_track])
3088 AS_IF([test "x$enable_pgstat_track" = xyes],
3089         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
3090                 [enable page state tracking code])])
3091
3092 PKG_PROG_PKG_CONFIG
3093 AC_MSG_CHECKING([systemd unit file directory])
3094 AC_ARG_WITH([systemdsystemunitdir],
3095         [AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
3096                 [Directory for systemd service files])],
3097         [], [with_systemdsystemunitdir=auto])
3098 AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
3099         [def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
3100         AS_IF([test "x$def_systemdsystemunitdir" = "x"],
3101                 [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
3102                 [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
3103                 with_systemdsystemunitdir=no],
3104         [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
3105 AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
3106         [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
3107 AC_MSG_RESULT([$with_systemdsystemunitdir])
3108 ]) # LC_CONFIGURE
3109
3110 #
3111 # LC_CONDITIONALS
3112 #
3113 # AM_CONDITIONALS for lustre
3114 #
3115 AC_DEFUN([LC_CONDITIONALS], [
3116 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
3117 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
3118 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
3119 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
3120 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
3121 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
3122 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
3123 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
3124 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
3125 AM_CONDITIONAL(GSS_SSK, test x$enable_ssk = xyes)
3126 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
3127 AM_CONDITIONAL(HAVE_SYSTEMD, test "x$with_systemdsystemunitdir" != "xno")
3128 AM_CONDITIONAL(XATTR_HANDLER, test "x$lb_cv_compile_xattr_handler_flags" = xyes)
3129 ]) # LC_CONDITIONALS
3130
3131 #
3132 # LC_CONFIG_FILES
3133 #
3134 # files that should be generated with AC_OUTPUT
3135 #
3136 AC_DEFUN([LC_CONFIG_FILES],
3137 [AC_CONFIG_FILES([
3138 lustre/Makefile
3139 lustre/autoMakefile
3140 lustre/autoconf/Makefile
3141 lustre/conf/Makefile
3142 lustre/contrib/Makefile
3143 lustre/doc/Makefile
3144 lustre/include/Makefile
3145 lustre/include/lustre/Makefile
3146 lustre/include/uapi/linux/Makefile
3147 lustre/kernel_patches/targets/3.10-rhel7.target
3148 lustre/kernel_patches/targets/2.6-rhel6.9.target
3149 lustre/kernel_patches/targets/2.6-rhel6.8.target
3150 lustre/kernel_patches/targets/2.6-rhel6.7.target
3151 lustre/kernel_patches/targets/2.6-rhel6.6.target
3152 lustre/kernel_patches/targets/2.6-rhel6.target
3153 lustre/kernel_patches/targets/2.6-rhel5.target
3154 lustre/kernel_patches/targets/2.6-sles11.target
3155 lustre/kernel_patches/targets/3.0-sles11.target
3156 lustre/kernel_patches/targets/3.0-sles11sp3.target
3157 lustre/kernel_patches/targets/3.0-sles11sp4.target
3158 lustre/kernel_patches/targets/3.12-sles12.target
3159 lustre/kernel_patches/targets/4.4-sles12.target
3160 lustre/kernel_patches/targets/2.6-fc11.target
3161 lustre/kernel_patches/targets/2.6-fc12.target
3162 lustre/kernel_patches/targets/2.6-fc15.target
3163 lustre/kernel_patches/targets/3.x-fc18.target
3164 lustre/ldlm/Makefile
3165 lustre/fid/Makefile
3166 lustre/fid/autoMakefile
3167 lustre/llite/Makefile
3168 lustre/llite/autoMakefile
3169 lustre/lov/Makefile
3170 lustre/lov/autoMakefile
3171 lustre/mdc/Makefile
3172 lustre/mdc/autoMakefile
3173 lustre/lmv/Makefile
3174 lustre/lmv/autoMakefile
3175 lustre/lfsck/Makefile
3176 lustre/lfsck/autoMakefile
3177 lustre/mdt/Makefile
3178 lustre/mdt/autoMakefile
3179 lustre/mdd/Makefile
3180 lustre/mdd/autoMakefile
3181 lustre/fld/Makefile
3182 lustre/fld/autoMakefile
3183 lustre/obdclass/Makefile
3184 lustre/obdclass/autoMakefile
3185 lustre/obdclass/linux/Makefile
3186 lustre/obdecho/Makefile
3187 lustre/obdecho/autoMakefile
3188 lustre/ofd/Makefile
3189 lustre/ofd/autoMakefile
3190 lustre/osc/Makefile
3191 lustre/osc/autoMakefile
3192 lustre/ost/Makefile
3193 lustre/ost/autoMakefile
3194 lustre/osd-ldiskfs/Makefile
3195 lustre/osd-ldiskfs/autoMakefile
3196 lustre/osd-zfs/Makefile
3197 lustre/osd-zfs/autoMakefile
3198 lustre/mgc/Makefile
3199 lustre/mgc/autoMakefile
3200 lustre/mgs/Makefile
3201 lustre/mgs/autoMakefile
3202 lustre/target/Makefile
3203 lustre/ptlrpc/Makefile
3204 lustre/ptlrpc/autoMakefile
3205 lustre/ptlrpc/gss/Makefile
3206 lustre/ptlrpc/gss/autoMakefile
3207 lustre/quota/Makefile
3208 lustre/quota/autoMakefile
3209 lustre/scripts/Makefile
3210 lustre/scripts/systemd/Makefile
3211 lustre/tests/Makefile
3212 lustre/tests/mpi/Makefile
3213 lustre/tests/kernel/Makefile
3214 lustre/tests/kernel/autoMakefile
3215 lustre/utils/Makefile
3216 lustre/utils/gss/Makefile
3217 lustre/osp/Makefile
3218 lustre/osp/autoMakefile
3219 lustre/lod/Makefile
3220 lustre/lod/autoMakefile
3221 ])
3222 ]) # LC_CONFIG_FILES