lustre/autoconf/lustre-core.m4

   1 #
   2 # LC_CONFIG_SRCDIR
   3 #
   4 # Wrapper for AC_CONFIG_SUBDIR
   5 #
   6 AC_DEFUN([LC_CONFIG_SRCDIR], [
   7 AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
   8 libcfs_is_module="yes"
   9 ldiskfs_is_ext4="yes"
  10 ])
  11
  12 #
  13 # LC_PATH_DEFAULTS
  14 #
  15 # lustre specific paths
  16 #
  17 AC_DEFUN([LC_PATH_DEFAULTS], [
  18 # ptlrpc kernel build requires this
  19 LUSTRE="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ]) # LC_PATH_DEFAULTS
  32
  33 #
  34 # LC_TARGET_SUPPORTED
  35 #
  36 # is the target os supported?
  37 #
  38 AC_DEFUN([LC_TARGET_SUPPORTED], [
  39 case $target_os in
  40         linux*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ]) # LC_TARGET_SUPPORTED
  48
  49 #
  50 # LC_CONFIG_OBD_BUFFER_SIZE
  51 #
  52 # the maximum buffer size of lctl ioctls
  53 #
  54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE], [
  55 AC_MSG_CHECKING([for maximum OBD ioctl size])
  56 AC_ARG_WITH([obd-buffer-size],
  57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  58                 [set lctl ioctl maximum bytes (default=8192)]),
  59         [OBD_BUFFER_SIZE=$with_obd_buffer_size],
  60         [OBD_BUFFER_SIZE=8192])
  61 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  62 AC_DEFINE_UNQUOTED(CONFIG_LUSTRE_OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE,
  63         [IOCTL Buffer Size])
  64 ]) # LC_CONFIG_OBD_BUFFER_SIZE
  65
  66 #
  67 # LC_GLIBC_SUPPORT_FHANDLES
  68 #
  69 AC_DEFUN([LC_GLIBC_SUPPORT_FHANDLES], [
  70 AC_CHECK_FUNCS([name_to_handle_at],
  71         [AC_DEFINE(HAVE_FHANDLE_GLIBC_SUPPORT, 1,
  72                 [file handle and related syscalls are supported])],
  73         [AC_MSG_WARN([file handle and related syscalls are not supported])])
  74 ]) # LC_GLIBC_SUPPORT_FHANDLES
  75
  76 #
  77 # LC_FUNC_DEV_SET_RDONLY
  78 #
  79 # check whether dev_set_rdonly is exported.  This is needed until we
  80 # have another mechanism to fence IO from the underlying device.
  81 #
  82 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY], [
  83 LB_CHECK_EXPORT([dev_set_rdonly], [block/ll_rw_block.c block/blk-core.c],
  84         [AC_DEFINE(HAVE_DEV_SET_RDONLY, 1,
  85                 [kernel exports dev_set_rdonly])],
  86         [AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])])
  87 ]) # LC_FUNC_DEV_SET_RDONLY
  88
  89 #
  90 # LC_STACK_SIZE
  91 #
  92 # Ensure the stack size is at least 8k in Lustre server (all kernels)
  93 #
  94 AC_DEFUN([LC_STACK_SIZE], [
  95 LB_CHECK_COMPILE([if stack size is at least 8k],
  96 stack_size_8k, [
  97         #include <linux/thread_info.h>
  98 ], [
  99         #if THREAD_SIZE < 8192
 100         #error "stack size < 8192"
 101         #endif
 102 ], [], [AC_MSG_ERROR([
 103
 104 Lustre requires that Linux is configured with at least a 8KB stack.
 105 ])])
 106 ]) # LC_STACK_SIZE
 107
 108 #
 109 # LC_MDS_MAX_THREADS
 110 #
 111 # Allow the user to set the MDS thread upper limit
 112 #
 113 AC_DEFUN([LC_MDS_MAX_THREADS], [
 114 AC_MSG_CHECKING([for maximum number of MDS threads])
 115 AC_ARG_WITH([mds_max_threads],
 116         AC_HELP_STRING([--with-mds-max-threads=count],
 117                 [maximum threads available on the MDS: (default=512)]),
 118         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
 119                 [maximum number of MDS threads])])
 120 AC_MSG_RESULT([$with_mds_max_threads])
 121 ]) # LC_MDS_MAX_THREADS
 122
 123 #
 124 # LC_CONFIG_PINGER
 125 #
 126 # the pinger is temporary, until we have the recovery node in place
 127 #
 128 AC_DEFUN([LC_CONFIG_PINGER], [
 129 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 130 AC_ARG_ENABLE([pinger],
 131         AC_HELP_STRING([--disable-pinger],
 132                 [disable recovery pinger support]),
 133         [], [enable_pinger="yes"])
 134 AC_MSG_RESULT([$enable_pinger])
 135 AS_IF([test "x$enable_pinger" != xno],
 136         [AC_DEFINE(ENABLE_PINGER, 1,[Use the Pinger])])
 137 ]) # LC_CONFIG_PINGER
 138
 139 #
 140 # LC_CONFIG_CHECKSUM
 141 #
 142 # do checksum of bulk data between client and OST
 143 #
 144 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 145 AC_MSG_CHECKING([whether to enable data checksum support])
 146 AC_ARG_ENABLE([checksum],
 147         AC_HELP_STRING([--disable-checksum],
 148                 [disable data checksum support]),
 149         [], [enable_checksum="yes"])
 150 AC_MSG_RESULT([$enable_checksum])
 151 AS_IF([test "x$enable_checksum" != xno],
 152         [AC_DEFINE(ENABLE_CHECKSUM, 1, [do data checksums])])
 153 ]) # LC_CONFIG_CHECKSUM
 154
 155 #
 156 # LC_CONFIG_HEALTH_CHECK_WRITE
 157 #
 158 # Turn off the actual write to the disk
 159 #
 160 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 161 AC_MSG_CHECKING([whether to enable a write with the health check])
 162 AC_ARG_ENABLE([health_write],
 163         AC_HELP_STRING([--enable-health_write],
 164                 [enable disk writes when doing health check]),
 165         [], [enable_health_write="no"])
 166 AC_MSG_RESULT([$enable_health_write])
 167 AS_IF([test "x$enable_health_write" != xno],
 168         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 169 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 170
 171 #
 172 # LC_CONFIG_LRU_RESIZE
 173 #
 174 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 175 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 176 AC_ARG_ENABLE([lru_resize],
 177         AC_HELP_STRING([--enable-lru-resize],
 178                 [enable lru resize support]),
 179         [], [enable_lru_resize="yes"])
 180 AC_MSG_RESULT([$enable_lru_resize])
 181 AS_IF([test "x$enable_lru_resize" != xno],
 182         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 183 ]) # LC_CONFIG_LRU_RESIZE
 184
 185 #
 186 # LC_QUOTA_CONFIG
 187 #
 188 # Quota support. The kernel must support CONFIG_QUOTA.
 189 #
 190 AC_DEFUN([LC_QUOTA_CONFIG], [
 191 LB_CHECK_CONFIG_IM([QUOTA], [],
 192         [AC_MSG_ERROR([
 193
 194 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 195 ])])
 196 ]) # LC_QUOTA_CONFIG
 197
 198 #
 199 # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 200 #
 201 # truncate_complete_page() has never been exported from an upstream kernel
 202 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 203 # delete_from_page_cache() is exported from 2.6.39
 204 #
 205 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE], [
 206 LB_CHECK_EXPORT([truncate_complete_page], [mm/truncate.c],
 207         [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 208                 [kernel export truncate_complete_page])])
 209 LB_CHECK_EXPORT([remove_from_page_cache], [mm/filemap.c],
 210         [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 211                 [kernel export remove_from_page_cache])])
 212 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
 213         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 214                 [kernel export delete_from_page_cache])])
 215 ]) # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 216
 217 #
 218 # LC_CONFIG_GSS_KEYRING
 219 #
 220 # default 'auto', tests for dependencies, if found, enables;
 221 # only called if gss is enabled
 222 #
 223 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 224 AC_MSG_CHECKING([whether to enable gss keyring backend])
 225 AC_ARG_ENABLE([gss_keyring],
 226         [AC_HELP_STRING([--disable-gss-keyring],
 227                 [disable gss keyring backend])],
 228         [], [enable_gss_keyring="auto"])
 229 AC_MSG_RESULT([$enable_gss_keyring])
 230 AS_IF([test "x$enable_gss_keyring" != xno], [
 231         LB_CHECK_CONFIG_IM([KEYS], [], [
 232                 gss_keyring_conf_test="fail"
 233                 AC_MSG_WARN([GSS keyring backend requires that CONFIG_KEYS be enabled in your kernel.])])
 234
 235         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 236                 gss_keyring_conf_test="fail"
 237                 AC_MSG_WARN([GSS keyring backend requires libkeyutils])])
 238
 239         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 240                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 241                         [Define this if you enable gss keyring backend])
 242                 enable_gss_keyring="yes"
 243         ], [
 244                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 245                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 246                 ])
 247         ])
 248 ])
 249 ]) # LC_CONFIG_GSS_KEYRING
 250
 251 #
 252 # LC_HAVE_CRED_TGCRED
 253 #
 254 # rhel7 struct cred has no member tgcred
 255 #
 256 AC_DEFUN([LC_HAVE_CRED_TGCRED], [
 257 LB_CHECK_COMPILE([if 'struct cred' has member 'tgcred'],
 258 cred_tgcred, [
 259         #include <linux/cred.h>
 260 ],[
 261         ((struct cred *)0)->tgcred = NULL;
 262 ],[
 263         AC_DEFINE(HAVE_CRED_TGCRED, 1,
 264                 [struct cred has member tgcred])
 265 ])
 266 ]) # LC_HAVE_CRED_TGCRED
 267
 268 #
 269 # LC_KEY_TYPE_INSTANTIATE_2ARGS
 270 #
 271 # rhel7 key_type->instantiate takes 2 args (struct key, struct key_preparsed_payload)
 272 #
 273 AC_DEFUN([LC_KEY_TYPE_INSTANTIATE_2ARGS], [
 274 LB_CHECK_COMPILE([if 'key_type->instantiate' has two args],
 275 key_type_instantiate_2args, [
 276         #include <linux/key-type.h>
 277 ],[
 278         ((struct key_type *)0)->instantiate(0, NULL);
 279 ],[
 280         AC_DEFINE(HAVE_KEY_TYPE_INSTANTIATE_2ARGS, 1,
 281                 [key_type->instantiate has two args])
 282 ])
 283 ]) # LC_KEY_TYPE_INSTANTIATE_2ARGS
 284
 285 #
 286 # LC_CONFIG_SUNRPC
 287 #
 288 AC_DEFUN([LC_CONFIG_SUNRPC], [
 289 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 290         AS_IF([test "x$sunrpc_required" = xyes], [
 291                 AC_MSG_ERROR([
 292
 293 kernel SUNRPC support is required by using GSS.
 294 ])
 295         ])])
 296 ]) # LC_CONFIG_SUNRPC
 297
 298 #
 299 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 300 #
 301 # Build gss and related tools of Lustre. Currently both kernel and user space
 302 # parts are depend on linux platform.
 303 #
 304 AC_DEFUN([LC_CONFIG_GSS], [
 305 AC_MSG_CHECKING([whether to enable gss support])
 306 AC_ARG_ENABLE([gss],
 307         [AC_HELP_STRING([--enable-gss], [enable gss support])],
 308         [], [enable_gss="auto"])
 309 AC_MSG_RESULT([$enable_gss])
 310
 311 AS_IF([test "x$enable_gss" != xno], [
 312         LC_CONFIG_GSS_KEYRING
 313         LC_HAVE_CRED_TGCRED
 314         LC_KEY_TYPE_INSTANTIATE_2ARGS
 315         sunrpc_required=$enable_gss
 316         LC_CONFIG_SUNRPC
 317         sunrpc_required="no"
 318
 319         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 320                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 321         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 322                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 323         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 324                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 325         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 326                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 327
 328         require_krb5=$enable_gss
 329         AC_KERBEROS_V5
 330         require_krb5="no"
 331
 332         AS_IF([test -n "$KRBDIR"], [
 333                 gss_conf_test="success"
 334         ], [
 335                 gss_conf_test="failure"
 336         ])
 337
 338         AS_IF([test "x$gss_conf_test" = xsuccess], [
 339                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 340                 enable_gss="yes"
 341         ], [
 342                 enable_gss="no"
 343         ])
 344 ])
 345 ]) # LC_CONFIG_GSS
 346
 347 # LC_HAVE_VOID_OPENSSL_HMAC_FUNCS
 348 #
 349 # OpenSSL 1.0+ return int for HMAC functions but previous versions do not
 350 AC_DEFUN([LC_HAVE_VOID_OPENSSL_HMAC_FUNCS], [
 351 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 352         #include <openssl/hmac.h>
 353         #include <openssl/evp.h>
 354
 355         int main(void) {
 356                 int rc;
 357                 HMAC_CTX ctx;
 358                 HMAC_CTX_init(&ctx);
 359                 rc = HMAC_Init_ex(&ctx, "test", 4, EVP_md_null(), NULL);
 360         }
 361 ])],[],[AC_DEFINE(HAVE_VOID_OPENSSL_HMAC_FUNCS, 1,
 362                 [OpenSSL HMAC functions return void instead of int])
 363 ])
 364 ]) # LC_HAVE_VOID_OPENSSL_HMAC_FUNCS
 365
 366 # LC_INODE_PERMISION_2ARGS
 367 #
 368 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 369 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 370 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 371 # v3.1 onward have a 2 arg version (inode, mask)
 372 #
 373 AC_DEFUN([LC_INODE_PERMISION_2ARGS], [
 374 LB_CHECK_COMPILE([if 'inode_operations->permission' has two args],
 375 inode_ops_permission_2args, [
 376         #include <linux/fs.h>
 377 ],[
 378         struct inode *inode __attribute__ ((unused));
 379
 380         inode = NULL;
 381         inode->i_op->permission(NULL, 0);
 382 ],[
 383         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 384                 [inode_operations->permission has two args])
 385 ])
 386 ]) # LC_INODE_PERMISION_2ARGS
 387
 388 #
 389 # LC_BLK_QUEUE_MAX_SEGMENTS
 390 #
 391 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 392 #
 393 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS], [
 394 LB_CHECK_COMPILE([if 'blk_queue_max_segments' is defined],
 395 blk_queue_max_segments, [
 396         #include <linux/blkdev.h>
 397 ],[
 398         blk_queue_max_segments(NULL, 0);
 399 ],[
 400         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 401                 [blk_queue_max_segments is defined])
 402 ])
 403 ]) # LC_BLK_QUEUE_MAX_SEGMENTS
 404
 405 #
 406 # LC_HAVE_DQUOT_FS_DISK_QUOTA
 407 #
 408 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 409 #
 410 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA], [
 411 tmp_flags="$EXTRA_KCFLAGS"
 412 EXTRA_KCFLAGS="-Werror"
 413 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct fs_disk_quota],
 414 fs_disk_quota, [
 415         #include <linux/fs.h>
 416         #include <linux/quota.h>
 417 ],[
 418         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 419 ],[
 420         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 421                 [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 422 ],[
 423         LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct kqid & fs_disk_quota],
 424         kqid_fs_disk_quota, [
 425                 #include <linux/fs.h>
 426                 #include <linux/quota.h>
 427         ],[
 428                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 429         ],[
 430                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 431                         [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 432                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
 433                         [quotactl_ops.set_dqblk takes struct kqid])
 434         ])
 435 ])
 436 EXTRA_KCFLAGS="$tmp_flags"
 437 ]) # LC_HAVE_DQUOT_FS_DISK_QUOTA
 438
 439 #
 440 # LC_HAVE_DQUOT_SUSPEND
 441 #
 442 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 443 #
 444 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND], [
 445 LB_CHECK_COMPILE([if 'dquot_suspend' is defined],
 446 dquot_suspend, [
 447         #include <linux/quotaops.h>
 448 ],[
 449         dquot_suspend(NULL, -1);
 450 ],[
 451         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 452 ])
 453 ]) # LC_HAVE_DQUOT_SUSPEND
 454
 455 #
 456 # LC_QUOTA64
 457 #
 458 # Check if kernel has been patched for 64-bit quota limits support.
 459 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 460 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 461 # that in the absence of quotaio_v1.h in the kernel headers.
 462 #
 463 AC_DEFUN([LC_QUOTA64], [
 464 tmp_flags="$EXTRA_KCFLAGS"
 465 EXTRA_KCFLAGS="-I$LINUX/fs"
 466 LB_CHECK_COMPILE([if kernel has 64-bit quota limits support],
 467 quota64, [
 468         #include <linux/kernel.h>
 469         #include <linux/fs.h>
 470         #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 471         #include <quota/quotaio_v2.h>
 472         struct v2r1_disk_dqblk dqblk_r1;
 473         #else
 474         #include <linux/quota.h>
 475         int ver = QFMT_VFS_V1;
 476         #endif
 477 ], [], [
 478         AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 479 ],[
 480         LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],
 481                 [AC_MSG_ERROR([You have got no 64-bit kernel quota support.])])
 482 ])
 483 EXTRA_KCFLAGS=$tmp_flags
 484 ]) # LC_QUOTA64
 485
 486 #
 487 # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 488 #
 489 # 2.6.34 adds __add_wait_queue_exclusive
 490 #
 491 AC_DEFUN([LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE], [
 492 LB_CHECK_COMPILE([if '__add_wait_queue_exclusive' exists],
 493 __add_wait_queue_exclusive, [
 494         #include <linux/wait.h>
 495 ],[
 496         wait_queue_head_t queue;
 497         wait_queue_t      wait;
 498         __add_wait_queue_exclusive(&queue, &wait);
 499 ],[
 500         AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
 501                   [__add_wait_queue_exclusive exists])
 502 ])
 503 ]) # LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
 504
 505 #
 506 # LC_FS_STRUCT_RWLOCK
 507 #
 508 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 509 #
 510 AC_DEFUN([LC_FS_STRUCT_RWLOCK], [
 511 LB_CHECK_COMPILE([if 'fs_struct.lock' use rwlock],
 512 fs_struct_rwlock, [
 513         #include <asm/atomic.h>
 514         #include <linux/spinlock.h>
 515         #include <linux/fs_struct.h>
 516 ],[
 517         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 518 ],[
 519         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1, [fs_struct.lock use rwlock])
 520 ])
 521 ]) # LC_FS_STRUCT_RWLOCK
 522
 523 #
 524 # LC_SBOPS_EVICT_INODE
 525 #
 526 # 2.6.36 super_operations add evict_inode method. it hybird of
 527 # delete_inode & clear_inode.
 528 #
 529 AC_DEFUN([LC_SBOPS_EVICT_INODE], [
 530 LB_CHECK_COMPILE([if 'super_operations.evict_inode' exist],
 531 super_ops_evict_inode, [
 532         #include <linux/fs.h>
 533 ],[
 534         ((struct super_operations *)0)->evict_inode(NULL);
 535 ],[
 536         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 537                 [super_operations.evict_inode() is exist in kernel])
 538 ])
 539 ]) # LC_SBOPS_EVICT_INODE
 540
 541 #
 542 # LC_FILE_FSYNC
 543 #
 544 # 2.6.35 file_operations.fsync taken 2 arguments.
 545 # 3.0.0 file_operations.fsync takes 4 arguments.
 546 #
 547 AC_DEFUN([LC_FILE_FSYNC], [
 548 LB_CHECK_COMPILE([if 'file_operations.fsync' takes 4 arguments],
 549 file_ops_fsync_4args, [
 550         #include <linux/fs.h>
 551 ],[
 552         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 553 ],[
 554         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 555                 [file_operations.fsync takes 4 arguments])
 556 ],[
 557         LB_CHECK_COMPILE([if 'file_operations.fsync' takes 2 arguments],
 558         file_ops_fsync_2args, [
 559                 #include <linux/fs.h>
 560         ],[
 561                 ((struct file_operations *)0)->fsync(NULL, 0);
 562         ],[
 563                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 564                         [file_operations.fsync takes 2 arguments])
 565         ])
 566 ])
 567 ]) # LC_FILE_FSYNC
 568
 569 #
 570 # LC_KERNEL_LOCKED
 571 #
 572 # 2.6.37 remove kernel_locked
 573 #
 574 AC_DEFUN([LC_KERNEL_LOCKED], [
 575 LB_CHECK_COMPILE([if 'kernel_locked' is defined],
 576 kernel_locked, [
 577         #include <linux/smp_lock.h>
 578 ],[
 579         kernel_locked();
 580 ],[
 581         AC_DEFINE(HAVE_KERNEL_LOCKED, 1, [kernel_locked is defined])
 582 ])
 583 ]) # LC_KERNEL_LOCKED
 584
 585 #
 586 # LC_D_COMPARE_7ARGS
 587 #
 588 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 589 #
 590 AC_DEFUN([LC_D_COMPARE_7ARGS], [
 591 LB_CHECK_COMPILE([if 'dentry_operations.d_compare()' taken 7 arguments],
 592 dentry_ops_d_compare_7arg, [
 593         #include <linux/dcache.h>
 594 ],[
 595         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 596 ],[
 597         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1, [d_compare need 7 arguments])
 598 ])
 599 ]) # LC_D_COMPARE_7ARGS
 600
 601 #
 602 # LC_D_DELETE_CONST
 603 #
 604 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 605 #
 606 AC_DEFUN([LC_D_DELETE_CONST], [
 607 tmp_flags="$EXTRA_KCFLAGS"
 608 EXTRA_KCFLAGS="-Werror"
 609 LB_CHECK_COMPILE([if 'dentry_operations.d_delete()' has const declare on first parameter],
 610 dentry_ops_d_delete_1st_const, [
 611         #include <linux/dcache.h>
 612 ],[
 613         const struct dentry *d = NULL;
 614         ((struct dentry_operations*)0)->d_delete(d);
 615 ],[
 616         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 617                 [d_delete first parameter declared const])
 618 ],[
 619         AC_DEFINE(HAVE_D_DELETE_CONST, [],
 620                 [d_delete first parameter declared is not const])
 621 ])
 622 EXTRA_KCFLAGS="$tmp_flags"
 623 ]) # LC_D_DELETE_CONST
 624
 625 #
 626 # LC_DCACHE_LOCK
 627 #
 628 # 2.6.38 dcache_lock removed. rcu-walk committed.
 629 #
 630 AC_DEFUN([LC_DCACHE_LOCK], [
 631 LB_CHECK_COMPILE([if 'dcache_lock' is exist],
 632 dcache_lock, [
 633         #include <linux/dcache.h>
 634 ],[
 635         spin_lock(&dcache_lock);
 636 ],[
 637         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 638                 [dcache_lock is exist])
 639 ])
 640 ]) # LC_DCACHE_LOCK
 641
 642 #
 643 # LC_INODE_I_RCU
 644 #
 645 # 2.6.38 inode.i_rcu added.
 646 #
 647 AC_DEFUN([LC_INODE_I_RCU], [
 648 LB_CHECK_COMPILE([if 'inode.i_rcu' exists],
 649 inode_i_rcu, [
 650         #include <linux/fs.h>
 651 ],[
 652         struct inode ino;
 653         struct rcu_head rcu = {};
 654         ino.i_rcu = rcu;
 655 ],[
 656         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 657                 [inode.i_rcu exists])
 658 ])
 659 ]) # LC_INODE_I_RCU
 660
 661 #
 662 # LC_BLKDEV_GET_BY_DEV
 663 #
 664 # 2.6.38 export blkdev_get_by_dev
 665 #
 666 AC_DEFUN([LC_BLKDEV_GET_BY_DEV], [
 667 LB_CHECK_EXPORT([blkdev_get_by_dev], [fs/block_dev.c],
 668         [AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 669                 [blkdev_get_by_dev is exported by the kernel])])
 670 ]) # LC_BLKDEV_GET_BY_DEV
 671
 672 #
 673 # LC_EXPORT_SIMPLE_SETATTR
 674 #
 675 # 2.6.38 export simple_setattr
 676 #
 677 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR], [
 678 LB_CHECK_EXPORT([simple_setattr], [fs/libfs.c],
 679         [AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 680                 [simple_setattr is exported by the kernel])])
 681 ]) # LC_EXPORT_SIMPLE_SETATTR
 682
 683 #
 684 # LC_IOP_TRUNCATE
 685 #
 686 # truncate callback removed since 2.6.39
 687 #
 688 AC_DEFUN([LC_IOP_TRUNCATE], [
 689 LB_CHECK_COMPILE([if 'inode_operations' has '.truncate' member function],
 690 inode_ops_truncate, [
 691         #include <linux/fs.h>
 692 ],[
 693         ((struct inode_operations *)0)->truncate(NULL);
 694 ],[
 695         AC_DEFINE(HAVE_INODEOPS_TRUNCATE, 1,
 696                 [inode_operations has .truncate member function])
 697 ])
 698 ]) # LC_IOP_TRUNCATE
 699
 700 #
 701 # LC_REQUEST_QUEUE_UNPLUG_FN
 702 #
 703 # 2.6.39 remove unplug_fn from request_queue.
 704 #
 705 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN], [
 706 LB_CHECK_COMPILE([if 'request_queue' has 'unplug_fn' field],
 707 request_queue_unplug_fn, [
 708         #include <linux/blkdev.h>
 709 ],[
 710         do {} while(sizeof(((struct request_queue *)0)->unplug_fn));
 711 ],[
 712         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
 713                 [request_queue has unplug_fn field])
 714 ])
 715 ]) # LC_REQUEST_QUEUE_UNPLUG_FN
 716
 717 #
 718 # LC_HAVE_FSTYPE_MOUNT
 719 #
 720 # 2.6.39 replace get_sb with mount in struct file_system_type
 721 #
 722 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT], [
 723 LB_CHECK_COMPILE([if 'file_system_type' has 'mount' field],
 724 file_system_type_mount, [
 725         #include <linux/fs.h>
 726 ],[
 727         struct file_system_type fst;
 728         void *i = (void *) fst.mount;
 729 ],[
 730         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 731                 [struct file_system_type has mount field])
 732 ])
 733 ]) # LC_HAVE_FSTYPE_MOUNT
 734
 735 #
 736 # LC_HAVE_FHANDLE_SYSCALLS
 737 #
 738 # 2.6.39 The open_by_handle_at() and name_to_handle_at() system calls were
 739 # added to Linux kernel 2.6.39.
 740 # Check if client supports these functions
 741 #
 742 AC_DEFUN([LC_HAVE_FHANDLE_SYSCALLS], [
 743 LB_CHECK_CONFIG_IM([FHANDLE],[
 744         AC_DEFINE(HAVE_FHANDLE_SYSCALLS, 1,
 745                 [kernel supports fhandles and related syscalls])
 746         ])
 747 ]) # LC_HAVE_FHANDLE_SYSCALLS
 748
 749 #
 750 # LC_HAVE_INODE_OWNER_OR_CAPABLE
 751 #
 752 # 2.6.39 renames is_owner_or_cap to inode_owner_or_capable
 753 #
 754 AC_DEFUN([LC_HAVE_INODE_OWNER_OR_CAPABLE], [
 755 LB_CHECK_COMPILE([if 'inode_owner_or_capable' exist],
 756 inode_owner_or_capable, [
 757         #include <linux/fs.h>
 758 ],[
 759         inode_owner_or_capable(NULL);
 760 ],[
 761         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
 762                 [inode_owner_or_capable exist])
 763 ])
 764 ]) # LC_HAVE_INODE_OWNER_OR_CAPABLE
 765
 766 #
 767 # LC_DIRTY_INODE_WITH_FLAG
 768 #
 769 # 3.0 dirty_inode() has a flag parameter
 770 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 771 #
 772 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG], [
 773 LB_CHECK_COMPILE([if 'dirty_inode' super_operation takes flag],
 774 dirty_inode_super_operation_flag, [
 775         #include <linux/fs.h>
 776 ],[
 777         struct inode *inode;
 778         inode->i_sb->s_op->dirty_inode(NULL, 0);
 779 ],[
 780         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 781                 [dirty_inode super_operation takes flag])
 782 ])
 783 ]) # LC_DIRTY_INODE_WITH_FLAG
 784
 785 #
 786 # LC_GENERIC_PERMISSION
 787 #
 788 # 2.6.38 generic_permission taken 4 parameters.
 789 # in fact, it means rcu-walk aware permission bring.
 790 #
 791 # 3.1 generic_permission taken 2 parameters.
 792 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 793 #
 794 AC_DEFUN([LC_GENERIC_PERMISSION], [
 795 LB_CHECK_COMPILE([if 'generic_permission' take 2 arguments],
 796 generic_permission_2args, [
 797         #include <linux/fs.h>
 798 ],[
 799         generic_permission(NULL, 0);
 800 ],[
 801         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 802                 [generic_permission taken 2 arguments])
 803 ],[
 804         LB_CHECK_COMPILE([if 'generic_permission' take 4 arguments],
 805         generic_permission_4args, [
 806                 #include <linux/fs.h>
 807         ],[
 808                 generic_permission(NULL, 0, 0, NULL);
 809         ],[
 810                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 811                         [generic_permission taken 4 arguments])
 812         ])
 813 ])
 814 ]) # LC_GENERIC_PERMISSION
 815
 816 #
 817 # LC_LM_XXX_LOCK_MANAGER_OPS
 818 #
 819 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 820 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 821 #
 822 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS], [
 823 LB_CHECK_COMPILE([if 'lock-manager' ops renamed to 'lm_xxx'],
 824 lock_manager_ops_lm_xxx, [
 825         #include <linux/fs.h>
 826 ],[
 827         struct lock_manager_operations lm_ops;
 828         lm_ops.lm_compare_owner = NULL;
 829 ],[
 830         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 831                 [lock-manager ops renamed to lm_xxx])
 832 ])
 833 ]) # LC_LM_XXX_LOCK_MANAGER_OPS
 834
 835 #
 836 # LC_INODE_DIO_WAIT
 837 #
 838 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait
 839 #     instead.
 840 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 841 #
 842 AC_DEFUN([LC_INODE_DIO_WAIT], [
 843 LB_CHECK_COMPILE([if 'inode->i_alloc_sem' is killed and use inode_dio_wait],
 844 inode_dio_wait, [
 845         #include <linux/fs.h>
 846 ],[
 847         inode_dio_wait((struct inode *)0);
 848 ],[
 849         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 850                 [inode->i_alloc_sem is killed and use inode_dio_wait])
 851 ])
 852 ]) # LC_INODE_DIO_WAIT
 853
 854 #
 855 # LC_IOP_GET_ACL
 856 #
 857 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 858 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 859 #
 860 AC_DEFUN([LC_IOP_GET_ACL], [
 861 LB_CHECK_COMPILE([if 'inode_operations' has '.get_acl' member function],
 862 inode_ops_get_acl, [
 863         #include <linux/fs.h>
 864 ],[
 865         struct inode_operations iop;
 866         iop.get_acl = NULL;
 867 ],[
 868         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 869                 [inode_operations has .get_acl member function])
 870 ])
 871 ]) # LC_IOP_GET_ACL
 872
 873 #
 874 # LC_FILE_LLSEEK_SIZE
 875 #
 876 # 3.1 introduced generic_file_llseek_size()
 877 #
 878 AC_DEFUN([LC_FILE_LLSEEK_SIZE], [
 879 LB_CHECK_EXPORT([generic_file_llseek_size], [fs/read_write.c],
 880         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 881                 [generic_file_llseek_size is exported by the kernel])])
 882 ]) # LC_FILE_LLSEEK_SIZE
 883
 884 #
 885 # LC_RADIX_EXCEPTION_ENTRY
 886 # 3.1 adds radix_tree_exception_entry.
 887 #
 888 AC_DEFUN([LC_RADIX_EXCEPTION_ENTRY], [
 889 LB_CHECK_COMPILE([radix_tree_exceptional_entry exist],
 890 radix_tree_exceptional_entry, [
 891         #include <linux/radix-tree.h>
 892 ],[
 893         radix_tree_exceptional_entry(NULL);
 894 ],[
 895         AC_DEFINE(HAVE_RADIX_EXCEPTION_ENTRY, 1,
 896                 [radix_tree_exceptional_entry exist])
 897 ])
 898 ]) # LC_RADIX_EXCEPTION_ENTRY
 899
 900 #
 901 # LC_HAVE_VOID_MAKE_REQUEST_FN
 902 #
 903 # 3.2 request_queue.make_request_fn defined as function returns with void
 904 # see kernel commit 5a7bbad27a410350e64a2d7f5ec18fc73836c14f
 905 #
 906 AC_DEFUN([LC_HAVE_VOID_MAKE_REQUEST_FN], [
 907 LB_CHECK_COMPILE([if 'request_queue.make_request_fn' returns void but not int],
 908 make_request_fn_void, [
 909         #include <linux/blkdev.h>
 910 ],[
 911         int ret;
 912         make_request_fn *mrf;
 913         ret = mrf(NULL, NULL);
 914 ],[],[
 915         AC_DEFINE(HAVE_VOID_MAKE_REQUEST_FN, 1,
 916                 [request_queue.make_request_fn returns void but not int])
 917 ])
 918 ]) # LC_HAVE_VOID_MAKE_REQUEST_FN
 919
 920 #
 921 # LC_HAVE_PROTECT_I_NLINK
 922 #
 923 # 3.2 protects inode->i_nlink from direct modification
 924 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 925 # at the same time adds set_nlink(), so checks set_nlink() for it.
 926 #
 927 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK], [
 928 LB_CHECK_COMPILE([if 'inode->i_nlink' is protected from direct modification],
 929 inode_i_nlink_protected, [
 930         #include <linux/fs.h>
 931 ],[
 932         struct inode i;
 933         set_nlink(&i, 1);
 934 ],[
 935         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 936                 [inode->i_nlink is protected from direct modification])
 937 ])
 938 ]) # LC_HAVE_PROTECT_I_NLINK
 939
 940 #
 941 # 2.6.39 security_inode_init_security takes a 'struct qstr' parameter
 942 #
 943 # 3.2 security_inode_init_security takes a callback to set xattrs
 944 #
 945 AC_DEFUN([LC_HAVE_SECURITY_IINITSEC], [
 946 LB_CHECK_COMPILE([if security_inode_init_security takes a callback],
 947 security_inode_init_security_callback, [
 948         #include <linux/security.h>
 949 ],[
 950         security_inode_init_security(NULL, NULL, NULL, (const initxattrs)NULL, NULL);
 951 ],[
 952         AC_DEFINE(HAVE_SECURITY_IINITSEC_CALLBACK, 1,
 953                   [security_inode_init_security takes a callback to set xattrs])
 954 ],[
 955         LB_CHECK_COMPILE([if security_inode_init_security takes a 'struct qstr' parameter],
 956         security_inode_init_security_qstr, [
 957                 #include <linux/security.h>
 958         ],[
 959                 security_inode_init_security(NULL, NULL, (struct qstr *)NULL, NULL, NULL, NULL);
 960         ],[
 961                 AC_DEFINE(HAVE_SECURITY_IINITSEC_QSTR, 1,
 962                           [security_inode_init_security takes a 'struct qstr' parameter])
 963         ])
 964 ])
 965 ]) # LC_HAVE_SECURITY_IINITSEC
 966
 967 #
 968 # LC_HAVE_MIGRATE_HEADER
 969 #
 970 # 3.3 introduces migrate_mode.h and migratepage has 4 args
 971 #
 972 AC_DEFUN([LC_HAVE_MIGRATE_HEADER], [
 973 LB_CHECK_FILE([$LINUX/include/linux/migrate.h], [
 974         AC_DEFINE(HAVE_MIGRATE_H, 1,
 975                 [kernel has include/linux/migrate.h])
 976 ],[
 977         LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h], [
 978                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
 979                         [kernel has include/linux/migrate_mode.h])
 980         ])
 981 ])
 982 ]) # LC_HAVE_MIGRATE_HEADER
 983
 984 #
 985 # LC_MIGRATEPAGE_4ARGS
 986 #
 987 AC_DEFUN([LC_MIGRATEPAGE_4ARGS], [
 988 LB_CHECK_COMPILE([if 'address_space_operations.migratepage' has 4 args],
 989 address_space_ops_migratepage_4args, [
 990         #include <linux/fs.h>
 991 #ifdef HAVE_MIGRATE_H
 992         #include <linux/migrate.h>
 993 #elif defined(HAVE_MIGRATE_MODE_H)
 994         #include <linux/migrate_mode.h>
 995 #endif
 996 ],[
 997         struct address_space_operations aops;
 998         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
 999 ],[
1000         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
1001                 [address_space_operations.migratepage has 4 args])
1002 ])
1003 ]) # LC_MIGRATEPAGE_4ARGS
1004
1005 #
1006 # LC_SUPEROPS_USE_DENTRY
1007 #
1008 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1009 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1010 #
1011 AC_DEFUN([LC_SUPEROPS_USE_DENTRY], [
1012 tmp_flags="$EXTRA_KCFLAGS"
1013 EXTRA_KCFLAGS="-Werror"
1014 LB_CHECK_COMPILE([if 'super_operations' use 'dentry' as parameter],
1015 super_ops_dentry, [
1016         #include <linux/fs.h>
1017         int show_options(struct seq_file *seq, struct dentry *root) {
1018                 return 0;
1019         }
1020 ],[
1021         struct super_operations ops;
1022         ops.show_options = show_options;
1023 ],[
1024         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1025                 [super_operations use dentry as parameter])
1026 ])
1027 EXTRA_KCFLAGS="$tmp_flags"
1028 ]) # LC_SUPEROPS_USE_DENTRY
1029
1030 #
1031 # LC_INODEOPS_USE_UMODE_T
1032 #
1033 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1034 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1035 #
1036 AC_DEFUN([LC_INODEOPS_USE_UMODE_T], [
1037 tmp_flags="$EXTRA_KCFLAGS"
1038 EXTRA_KCFLAGS="-Werror"
1039 LB_CHECK_COMPILE([if 'inode_operations' use 'umode_t' as parameter],
1040 inode_ops_umode_t, [
1041         #include <linux/fs.h>
1042         #include <linux/types.h>
1043         int my_mknod(struct inode *dir, struct dentry *dchild,
1044                      umode_t mode, dev_t dev)
1045         {
1046                 return 0;
1047         }
1048 ],[
1049         struct inode_operations ops;
1050         ops.mknod = my_mknod;
1051 ],[
1052         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1053                 [inode_operations use umode_t as parameter])
1054 ])
1055 EXTRA_KCFLAGS="$tmp_flags"
1056 ]) # LC_INODEOPS_USE_UMODE_T
1057
1058 #
1059 # LC_KMAP_ATOMIC_HAS_1ARG
1060 #
1061 # 3.4 kmap_atomic removes second argument
1062 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1063 #
1064 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG], [
1065 LB_CHECK_COMPILE([if 'kmap_atomic' has only 1 argument],
1066 kmap_atomic_1arg, [
1067         #include <linux/highmem.h>
1068 ],[
1069         kmap_atomic(NULL);
1070 ],[
1071         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1072                 [have kmap_atomic has only 1 argument])
1073 ])
1074 ]) # LC_KMAP_ATOMIC_HAS_1ARG
1075
1076 #
1077 # LC_HAVE_D_MAKE_ROOT
1078 #
1079 # 3.4 converts d_alloc_root to d_make_root
1080 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1081 #
1082 AC_DEFUN([LC_HAVE_D_MAKE_ROOT], [
1083 LB_CHECK_COMPILE([if have 'd_make_root'],
1084 d_make_root, [
1085         #include <linux/fs.h>
1086 ],[
1087         d_make_root((struct inode *)NULL);
1088 ],[
1089         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1090                 [have d_make_root])
1091 ])
1092 ]) # LC_HAVE_D_MAKE_ROOT
1093
1094 #
1095 # LC_HAVE_CACHE_REGISTER
1096 #
1097 # 3.4 cache_register/cache_unregister are removed
1098 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1099 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1100 # are defined, but not exported.
1101 # 3.3 cache_register_net/cache_unregister_net are
1102 # exported and replacing cache_register/cache_unregister in 3.4
1103 #
1104 AC_DEFUN([LC_HAVE_CACHE_REGISTER], [
1105 LB_CHECK_COMPILE([if have 'cache_register'],
1106 cache_register, [
1107         #include <linux/sunrpc/cache.h>
1108 ],[
1109         cache_register(NULL);
1110 ],[
1111         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1112                 [have cache_register])
1113 ])
1114 ]) # LC_HAVE_CACHE_REGISTER
1115
1116 #
1117 # LC_HAVE_CLEAR_INODE
1118 #
1119 # 3.5 renames end_writeback() back to clear_inode()...
1120 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1121 #
1122 AC_DEFUN([LC_HAVE_CLEAR_INODE], [
1123 LB_CHECK_COMPILE([if have 'clear_inode'],
1124 clear_inode, [
1125         #include <linux/fs.h>
1126 ],[
1127         clear_inode((struct inode *)NULL);
1128 ],[
1129         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1130                 [have clear_inode])
1131 ])
1132 ]) # LC_HAVE_CLEAR_INODE
1133
1134 #
1135 # LC_HAVE_ENCODE_FH_PARENT
1136 #
1137 # 3.5 encode_fh has parent inode passed in directly
1138 # see kernel commit b0b0382b
1139 #
1140 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT], [
1141 tmp_flags="$EXTRA_KCFLAGS"
1142 EXTRA_KCFLAGS="-Werror"
1143 LB_CHECK_COMPILE([if 'encode_fh' have parent inode as parameter],
1144 encode_fh_parent_inode, [
1145         #include <linux/exportfs.h>
1146         #include <linux/fs.h>
1147         #include <linux/types.h>
1148         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1149         {
1150                 return 0;
1151         }
1152 ],[
1153         struct export_operations exp_op;
1154         exp_op.encode_fh = ll_encode_fh;
1155 ],[
1156         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1157                 [have parent inode as parameter])
1158 ])
1159 EXTRA_KCFLAGS="$tmp_flags"
1160 ]) # LC_HAVE_ENCODE_FH_PARENT
1161
1162 #
1163 # LC_FILE_LLSEEK_SIZE_5ARG
1164 #
1165 # 3.5 has generic_file_llseek_size with 5 args
1166 #
1167 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG], [
1168 LB_CHECK_COMPILE([if Linux kernel has 'generic_file_llseek_size' with 5 args],
1169 generic_file_llseek_size_5args, [
1170         #include <linux/fs.h>
1171 ],[
1172         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1173 ], [
1174         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1175                 [kernel has generic_file_llseek_size with 5 args])
1176 ])
1177 ]) # LC_FILE_LLSEEK_SIZE_5ARG
1178
1179 #
1180 # LC_LLITE_DATA_IS_LIST
1181 #
1182 # 3.6 switch i_dentry/d_alias from list to hlist
1183 #
1184 # In the upstream kernels d_alias first changes
1185 # to a hlist and then in later version, 3.11, gets
1186 # moved to the union d_u. Due to some distros having
1187 # d_alias in the d_u union as a struct list, which
1188 # has never existed upstream stream, we can't test
1189 # if d_alias is a list or hlist directly. If ever
1190 # i_dentry and d_alias even up different combos then
1191 # the build will fail. In that case then we will need
1192 # to separate out the i_dentry and d_alias test below.
1193 #
1194 AC_DEFUN([LC_DATA_FOR_LLITE_IS_LIST], [
1195 tmp_flags="$EXTRA_KCFLAGS"
1196 EXTRA_KCFLAGS="-Werror"
1197 LB_CHECK_COMPILE([if 'i_dentry/d_alias' uses 'list'],
1198 i_dentry_d_alias_list, [
1199         #include <linux/fs.h>
1200 ],[
1201         struct inode inode;
1202         INIT_LIST_HEAD(&inode.i_dentry);
1203 ],[
1204         AC_DEFINE(DATA_FOR_LLITE_IS_LIST, 1,
1205                 [both i_dentry/d_alias uses list])
1206 ])
1207 EXTRA_KCFLAGS="$tmp_flags"
1208 ]) # LC_DATA_FOR_LLITE_IS_LIST
1209
1210 #
1211 # LC_DENTRY_OPEN_USE_PATH
1212 #
1213 # 3.6 dentry_open uses struct path as first argument
1214 # see kernel commit 765927b2
1215 #
1216 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH], [
1217 tmp_flags="$EXTRA_KCFLAGS"
1218 EXTRA_KCFLAGS="-Werror"
1219 LB_CHECK_COMPILE([if 'dentry_open' uses 'struct path' as first argument],
1220 dentry_open_path, [
1221         #include <linux/fs.h>
1222         #include <linux/path.h>
1223 ],[
1224         struct path path;
1225         dentry_open(&path, 0, NULL);
1226 ],[
1227         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1228                 [dentry_open uses struct path as first argument])
1229 ])
1230 EXTRA_KCFLAGS="$tmp_flags"
1231 ]) # LC_DENTRY_OPEN_USE_PATH
1232
1233 #
1234 # LC_HAVE_IOP_ATOMIC_OPEN
1235 #
1236 # 3.6 vfs adds iop->atomic_open
1237 #
1238 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN], [
1239 LB_CHECK_COMPILE([if 'iop' has 'atomic_open'],
1240 inode_ops_atomic_open, [
1241         #include <linux/fs.h>
1242 ],[
1243         struct inode_operations iop;
1244         iop.atomic_open = NULL;
1245 ],[
1246         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1247                 [have iop atomic_open])
1248 ])
1249 ]) # LC_HAVE_IOP_ATOMIC_OPEN
1250
1251 #
1252 # LC_HAVE_SB_START_WRITE
1253 #
1254 # RHEL6 2.6.32, 3.6 or newer support wrapped FS freeze functions
1255 #
1256 AC_DEFUN([LC_HAVE_SB_START_WRITE], [
1257 LB_CHECK_COMPILE([if kernel supports wrapped FS freeze functions],
1258 sb_start_write, [
1259         #include <linux/fs.h>
1260 ],[
1261         sb_start_write(NULL);
1262 ],[
1263         AC_DEFINE(HAVE_SB_START_WRITE, 1,
1264                 [kernel supports wrapped FS freeze functions])
1265 ])
1266 ]) # LC_HAVE_SB_START_WRITE
1267
1268 #
1269 # LC_HAVE_POSIXACL_USER_NS
1270 #
1271 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1272 #
1273 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS], [
1274 LB_CHECK_COMPILE([if 'posix_acl_to_xattr' takes 'struct user_namespace'],
1275 posix_acl_to_xattr_user_namespace, [
1276         #include <linux/fs.h>
1277         #include <linux/posix_acl_xattr.h>
1278 ],[
1279         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1280 ],[
1281         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1282                 [posix_acl_to_xattr takes struct user_namespace])
1283 ])
1284 ]) # LC_HAVE_POSIXACL_USER_NS
1285
1286 #
1287 # LC_HAVE_FILE_F_INODE
1288 #
1289 # 3.8 struct file has new member f_inode
1290 #
1291 AC_DEFUN([LC_HAVE_FILE_F_INODE], [
1292 LB_CHECK_COMPILE([if 'struct file' has member 'f_inode'],
1293 file_f_inode, [
1294         #include <linux/fs.h>
1295 ],[
1296         ((struct file *)0)->f_inode = NULL;
1297 ],[
1298         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1299                 [struct file has member f_inode])
1300 ])
1301 ]) # LC_HAVE_FILE_F_INODE
1302
1303 #
1304 # LC_HAVE_FILE_INODE
1305 #
1306 # 3.8 has introduced inline function file_inode
1307 #
1308 AC_DEFUN([LC_HAVE_FILE_INODE], [
1309 LB_CHECK_COMPILE([if file_inode() exists],
1310 file_inode, [
1311         #include <linux/fs.h>
1312 ],[
1313         file_inode(NULL);
1314 ],[
1315         AC_DEFINE(HAVE_FILE_INODE, 1,
1316                 [file_inode() has been defined])
1317 ])
1318 ]) # LC_HAVE_FILE_INODE
1319
1320 #
1321 # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1322 #
1323 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS], [
1324 LB_CHECK_COMPILE([if 'sunrpc_cache_pipe_upcall' takes 3 args],
1325 sunrpc_cache_pipe_upcall_3args, [
1326         #include <linux/sunrpc/cache.h>
1327 ],[
1328         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1329 ],[
1330         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1331                 [sunrpc_cache_pipe_upcall takes 3 args])
1332 ])
1333 ]) # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1334
1335 #
1336 # LC_HAVE_HLIST_FOR_EACH_3ARG
1337 #
1338 # 3.9 uses hlist_for_each_entry with 3 args
1339 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1340 #
1341 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG], [
1342 LB_CHECK_COMPILE([if 'hlist_for_each_entry' has 3 args],
1343 hlist_for_each_entry_3args, [
1344         #include <linux/list.h>
1345         #include <linux/fs.h>
1346 ],[
1347         struct hlist_head *head = NULL;
1348         struct inode *inode;
1349
1350         hlist_for_each_entry(inode, head, i_hash) {
1351                 continue;
1352         }
1353 ],[
1354         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1,
1355                 [hlist_for_each_entry has 3 args])
1356 ])
1357 ]) # LC_HAVE_HLIST_FOR_EACH_3ARG
1358
1359 #
1360 # LC_HAVE_BIO_END_SECTOR
1361 #
1362 # 3.9 introduces bio_end_sector macro
1363 # f73a1c7d117d07a96d89475066188a2b79e53c48
1364 #
1365 AC_DEFUN([LC_HAVE_BIO_END_SECTOR], [
1366 LB_CHECK_COMPILE([if 'bio_end_sector' is defined],
1367 bio_end_sector, [
1368         #include <linux/bio.h>
1369 ],[
1370         struct bio bio;
1371
1372         bio_end_sector(&bio);
1373 ],[
1374         AC_DEFINE(HAVE_BIO_END_SECTOR, 1,
1375                   [bio_end_sector is defined])
1376 ])
1377 ]) # LC_HAVE_BIO_END_SECTOR
1378
1379 #
1380 # LC_HAVE_REMOVE_PROC_SUBTREE
1381 #
1382 # 3.10 introduced remove_proc_subtree
1383 #
1384 AC_DEFUN([LC_HAVE_REMOVE_PROC_SUBTREE], [
1385 LB_CHECK_COMPILE([if 'remove_proc_subtree' is defined],
1386 remove_proc_subtree, [
1387         #include <linux/proc_fs.h>
1388 ],[
1389         remove_proc_subtree(NULL, NULL);
1390 ], [
1391         AC_DEFINE(HAVE_REMOVE_PROC_SUBTREE, 1,
1392                   [remove_proc_subtree is defined])
1393 ])
1394 ]) # LC_HAVE_REMOVE_PROC_SUBTREE
1395
1396 #
1397 # LC_HAVE_PROC_REMOVE
1398 #
1399 # 3.10 introduced proc_remove
1400 #
1401 AC_DEFUN([LC_HAVE_PROC_REMOVE], [
1402 LB_CHECK_COMPILE([if 'proc_remove' is defined],
1403 proc_remove, [
1404         #include <linux/proc_fs.h>
1405 ],[
1406         proc_remove(NULL);
1407 ], [
1408         AC_DEFINE(HAVE_PROC_REMOVE, 1,
1409                   [proc_remove is defined])
1410 ])
1411 ]) # LC_HAVE_PROC_REMOVE
1412
1413 #
1414 # LC_BLKDEV_RELEASE_RETURN_INT
1415 #
1416 # 3.10 release for block device doesn't return int
1417 #
1418 AC_DEFUN([LC_BLKDEV_RELEASE_RETURN_INT], [
1419 LB_CHECK_COMPILE([if 'block_device_operations' release returns 'int'],
1420 block_device_ops_release_return_int, [
1421         #include <linux/blkdev.h>
1422 ],[
1423         struct block_device_operations fops;
1424         int i __attribute__ ((unused));
1425
1426         i = fops.release(NULL, 0);
1427 ],[
1428         AC_DEFINE(HAVE_BLKDEV_RELEASE_RETURN_INT, 1,
1429                 [block device release returns int])
1430 ])
1431 ]) # LC_BLKDEV_RELEASE_RETURN_INT
1432
1433 #
1434 # LC_INVALIDATE_RANGE
1435 #
1436 # 3.11 invalidatepage requires the length of the range to invalidate
1437 #
1438 AC_DEFUN([LC_INVALIDATE_RANGE], [
1439 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
1440 address_space_ops_invalidatepage_3args, [
1441         #include <linux/fs.h>
1442 ],[
1443         struct address_space_operations a_ops;
1444         a_ops.invalidatepage(NULL, 0, 0);
1445 ],[
1446         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
1447                 [address_space_operations.invalidatepage needs 3 arguments])
1448 ])
1449 ]) # LC_INVALIDATE_RANGE
1450
1451 #
1452 # LC_HAVE_DIR_CONTEXT
1453 #
1454 # 3.11 readdir now takes the new struct dir_context
1455 #
1456 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
1457 LB_CHECK_COMPILE([if 'dir_context' exist],
1458 dir_context, [
1459         #include <linux/fs.h>
1460 ],[
1461         struct dir_context ctx;
1462         ctx.pos = 0;
1463 ],[
1464         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
1465                 [dir_context exist])
1466 ])
1467 ]) # LC_HAVE_DIR_CONTEXT
1468
1469 #
1470 # LC_D_COMPARE_5ARGS
1471 #
1472 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1473 #
1474 AC_DEFUN([LC_D_COMPARE_5ARGS], [
1475 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
1476 d_compare_5args, [
1477         #include <linux/dcache.h>
1478 ],[
1479         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1480 ],[
1481         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1482                 [d_compare need 5 arguments])
1483 ])
1484 ]) # LC_D_COMPARE_5ARGS
1485
1486 #
1487 # LC_HAVE_DCOUNT
1488 #
1489 # 3.11 need to access d_count to get dentry reference count
1490 #
1491 AC_DEFUN([LC_HAVE_DCOUNT], [
1492 LB_CHECK_COMPILE([if 'd_count' exist],
1493 d_count, [
1494         #include <linux/dcache.h>
1495 ],[
1496         struct dentry de;
1497         d_count(&de);
1498 ],[
1499         AC_DEFINE(HAVE_D_COUNT, 1,
1500                 [d_count exist])
1501 ])
1502 ]) # LC_HAVE_DCOUNT
1503
1504 #
1505 # LC_OLDSIZE_TRUNCATE_PAGECACHE
1506 #
1507 # 3.12 truncate_pagecache without oldsize parameter
1508 #
1509 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
1510 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
1511 truncate_pagecache_old_size, [
1512         #include <linux/mm.h>
1513 ],[
1514         truncate_pagecache(NULL, 0, 0);
1515 ],[
1516         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
1517                 [with oldsize])
1518 ])
1519 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
1520
1521 #
1522 # LC_HAVE_DENTRY_D_U_D_ALIAS
1523 #
1524 # 3.11 kernel moved d_alias to the union d_u in struct dentry
1525 #
1526 # Some distros move d_alias to d_u but it is still a struct list
1527 #
1528 AC_DEFUN([LC_HAVE_DENTRY_D_U_D_ALIAS], [
1529 AS_IF([test "x$lb_cv_compile_i_dentry_d_alias_list" = xyes], [
1530         LB_CHECK_COMPILE([if list 'dentry.d_u.d_alias' exist],
1531         d_alias, [
1532                 #include <linux/list.h>
1533                 #include <linux/dcache.h>
1534         ],[
1535                 struct dentry de;
1536                 INIT_LIST_HEAD(&de.d_u.d_alias);
1537         ],[
1538                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1539                         [list dentry.d_u.d_alias exist])
1540         ])
1541 ],[
1542         LB_CHECK_COMPILE([if hlist 'dentry.d_u.d_alias' exist],
1543         d_alias, [
1544                 #include <linux/list.h>
1545                 #include <linux/dcache.h>
1546         ],[
1547                 struct dentry de;
1548                 INIT_HLIST_NODE(&de.d_u.d_alias);
1549         ],[
1550                 AC_DEFINE(HAVE_DENTRY_D_U_D_ALIAS, 1,
1551                         [hlist dentry.d_u.d_alias exist])
1552         ])
1553 ])
1554 ]) # LC_HAVE_DENTRY_D_U_D_ALIAS
1555
1556 #
1557 # LC_HAVE_DENTRY_D_CHILD
1558 #
1559 # 3.11 kernel d_child has been moved out of the union d_u
1560 # in struct dentry
1561 #
1562 AC_DEFUN([LC_HAVE_DENTRY_D_CHILD], [
1563 LB_CHECK_COMPILE([if 'dentry.d_child' exist],
1564 d_child, [
1565         #include <linux/list.h>
1566         #include <linux/dcache.h>
1567 ],[
1568         struct dentry de;
1569         INIT_LIST_HEAD(&de.d_child);
1570 ],[
1571         AC_DEFINE(HAVE_DENTRY_D_CHILD, 1,
1572                 [dentry.d_child exist])
1573 ])
1574 ]) # LC_HAVE_DENTRY_D_CHILD
1575
1576 #
1577 # LC_KIOCB_KI_LEFT
1578 #
1579 # 3.12 ki_left removed from struct kiocb
1580 #
1581 AC_DEFUN([LC_KIOCB_KI_LEFT], [
1582 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
1583 kiocb_ki_left, [
1584         #include <linux/aio.h>
1585 ],[
1586         ((struct kiocb*)0)->ki_left = 0;
1587 ],[
1588         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
1589                 [ki_left exist])
1590 ])
1591 ]) # LC_KIOCB_KI_LEFT
1592
1593 #
1594 # LC_VFS_RENAME_5ARGS
1595 #
1596 # 3.13 has vfs_rename with 5 args
1597 #
1598 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
1599 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
1600 vfs_rename_5args, [
1601         #include <linux/fs.h>
1602 ],[
1603         vfs_rename(NULL, NULL, NULL, NULL, NULL);
1604 ], [
1605         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
1606                 [kernel has vfs_rename with 5 args])
1607 ])
1608 ]) # LC_VFS_RENAME_5ARGS
1609
1610 #
1611 # LC_VFS_UNLINK_3ARGS
1612 #
1613 # 3.13 has vfs_unlink with 3 args
1614 #
1615 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
1616 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
1617 vfs_unlink_3args, [
1618         #include <linux/fs.h>
1619 ],[
1620         vfs_unlink(NULL, NULL, NULL);
1621 ], [
1622         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
1623                 [kernel has vfs_unlink with 3 args])
1624 ])
1625 ]) # LC_VFS_UNLINK_3ARGS
1626
1627 #
1628 # LC_HAVE_BVEC_ITER
1629 #
1630 # 3.14 move some of its data in struct bio into the new
1631 # struct bvec_iter
1632 #
1633 AC_DEFUN([LC_HAVE_BVEC_ITER], [
1634 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
1635 have_bvec_iter, [
1636         #include <linux/bio.h>
1637 ],[
1638         struct bvec_iter iter;
1639         iter.bi_bvec_done = 0;
1640 ], [
1641         AC_DEFINE(HAVE_BVEC_ITER, 1,
1642                 [kernel has struct bvec_iter])
1643 ])
1644 ]) # LC_HAVE_BVEC_ITER
1645
1646 #
1647 # LC_HAVE_TRUNCATE_IPAGE_FINAL
1648 #
1649 # 3.14 bring truncate_inode_pages_final for evict_inode
1650 #
1651 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
1652 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
1653 truncate_ipages_final, [
1654         #include <linux/mm.h>
1655 ],[
1656         truncate_inode_pages_final(NULL);
1657 ], [
1658         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
1659                 [kernel has truncate_inode_pages_final])
1660 ])
1661 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
1662
1663 #
1664 # LC_VFS_RENAME_6ARGS
1665 #
1666 # 3.15 has vfs_rename with 6 args
1667 #
1668 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
1669 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
1670 vfs_rename_6args, [
1671         #include <linux/fs.h>
1672 ],[
1673         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
1674 ], [
1675         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
1676                 [kernel has vfs_rename with 6 args])
1677 ])
1678 ]) # LC_VFS_RENAME_6ARGS
1679
1680 #
1681 # LC_DIRECTIO_USE_ITER
1682 #
1683 # 3.16 kernel changes direct IO to use iov_iter
1684 #
1685 AC_DEFUN([LC_DIRECTIO_USE_ITER], [
1686 LB_CHECK_COMPILE([if direct IO uses iov_iter],
1687 direct_io_iter, [
1688         #include <linux/fs.h>
1689 ],[
1690         struct address_space_operations ops;
1691         struct iov_iter *iter = NULL;
1692         loff_t offset = 0;
1693
1694         ops.direct_IO(0, NULL, iter, offset);
1695 ],[
1696         AC_DEFINE(HAVE_DIRECTIO_ITER, 1,
1697                 [direct IO uses iov_iter])
1698 ])
1699 ]) # LC_DIRECTIO_USE_ITER
1700
1701 #
1702 # LC_HAVE_IOV_ITER_INIT_DIRECTION
1703 #
1704 #
1705 # 3.16 linux commit 71d8e532b1549a478e6a6a8a44f309d050294d00
1706 #      changed iov_iter_init api to start accepting a tag
1707 #      that defines if its a read or write operation
1708 #
1709 AC_DEFUN([LC_HAVE_IOV_ITER_INIT_DIRECTION], [
1710 tmp_flags="$EXTRA_KCFLAGS"
1711 EXTRA_KCFLAGS="-Werror"
1712 LB_CHECK_COMPILE([if 'iov_iter_init' takes a tag],
1713 iter_init, [
1714         #include <linux/uio.h>
1715         #include <linux/fs.h>
1716 ],[
1717         const struct iovec *iov = NULL;
1718
1719         iov_iter_init(NULL, READ, iov, 1, 0);
1720 ],[
1721         AC_DEFINE(HAVE_IOV_ITER_INIT_DIRECTION, 1,
1722                 [iov_iter_init handles directional tag])
1723 ])
1724 EXTRA_KCFLAGS="$tmp_flags"
1725 ]) # LC_HAVE_IOV_ITER_INIT_DIRECTION
1726
1727 #
1728 # LC_HAVE_IOV_ITER_TRUNCATE
1729 #
1730 #
1731 # 3.16 introduces a new API iov_iter_truncate()
1732 #
1733 AC_DEFUN([LC_HAVE_IOV_ITER_TRUNCATE], [
1734 tmp_flags="$EXTRA_KCFLAGS"
1735 EXTRA_KCFLAGS="-Werror"
1736 LB_CHECK_COMPILE([if 'iov_iter_truncate' exists ],
1737 iter_truncate, [
1738         #include <linux/uio.h>
1739         #include <linux/fs.h>
1740 ],[
1741         struct iov_iter *i = NULL;
1742
1743         iov_iter_truncate(i, 0);
1744 ],[
1745         AC_DEFINE(HAVE_IOV_ITER_TRUNCATE, 1, [iov_iter_truncate exists])
1746 ])
1747 EXTRA_KCFLAGS="$tmp_flags"
1748 ]) # LC_HAVE_IOV_ITER_TRUNCATE
1749
1750 #
1751 # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1752 #
1753 # 3.16 introduces [read|write]_iter to struct file_operations
1754 #
1755 AC_DEFUN([LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER], [
1756 LB_CHECK_COMPILE([if 'file_operations.[read|write]_iter' exist],
1757 file_function_iter, [
1758         #include <linux/fs.h>
1759 ],[
1760         ((struct file_operations *)NULL)->read_iter(NULL, NULL);
1761         ((struct file_operations *)NULL)->write_iter(NULL, NULL);
1762 ],[
1763         AC_DEFINE(HAVE_FILE_OPERATIONS_READ_WRITE_ITER, 1,
1764                 [file_operations.[read|write]_iter functions exist])
1765 ])
1766 ]) # LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1767
1768 #
1769 # LC_KEY_MATCH_DATA
1770 #
1771 # 3.17  replaces key_type::match with match_preparse
1772 #       and has new struct key_match_data
1773 #
1774 AC_DEFUN([LC_KEY_MATCH_DATA], [
1775 LB_CHECK_COMPILE([if struct key_match field exist],
1776 key_match, [
1777         #include <linux/key-type.h>
1778 ],[
1779         struct key_match_data data;
1780 ],[
1781         AC_DEFINE(HAVE_KEY_MATCH_DATA, 1,
1782                 [struct key_match_data exist])
1783 ])
1784 ]) # LC_KEY_MATCH_DATA
1785
1786 #
1787 # LC_NFS_FILLDIR_USE_CTX
1788 #
1789 # 3.18 kernel moved from void cookie to struct dir_context
1790 #
1791 AC_DEFUN([LC_NFS_FILLDIR_USE_CTX], [
1792 tmp_flags="$EXTRA_KCFLAGS"
1793 EXTRA_KCFLAGS="-Werror"
1794 LB_CHECK_COMPILE([if filldir_t uses struct dir_context],
1795 filldir_ctx, [
1796         #include <linux/fs.h>
1797 ],[
1798         int filldir(struct dir_context *ctx, const char* name,
1799                     int i, loff_t off, u64 tmp, unsigned temp)
1800         {
1801                 return 0;
1802         }
1803
1804         struct dir_context ctx = {
1805                 .actor = filldir,
1806         };
1807
1808         ctx.actor(NULL, "test", 0, (loff_t) 0, 0, 0);
1809 ],[
1810         AC_DEFINE(HAVE_FILLDIR_USE_CTX, 1,
1811                 [filldir_t needs struct dir_context as argument])
1812 ])
1813 EXTRA_KCFLAGS="$tmp_flags"
1814 ]) # LC_NFS_FILLDIR_USE_CTX
1815
1816 #
1817 # LC_PERCPU_COUNTER_INIT
1818 #
1819 # 3.18  For kernels 3.18 and after percpu_counter_init starts
1820 #       to pass a GFP_* memory allocation flag for internal
1821 #       memory allocation purposes.
1822 #
1823 AC_DEFUN([LC_PERCPU_COUNTER_INIT], [
1824 LB_CHECK_COMPILE([if percpu_counter_init uses GFP_* flag as argument],
1825 percpu_counter_init, [
1826         #include <linux/percpu_counter.h>
1827 ],[
1828         percpu_counter_init(NULL, 0, GFP_KERNEL);
1829 ],[
1830         AC_DEFINE(HAVE_PERCPU_COUNTER_INIT_GFP_FLAG, 1,
1831                 [percpu_counter_init uses GFP_* flag])
1832 ])
1833 ]) # LC_PERCPU_COUNTER_INIT
1834
1835 #
1836 # LC_KIOCB_HAS_NBYTES
1837 #
1838 # 3.19 kernel removed ki_nbytes from struct kiocb
1839 #
1840 AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
1841 LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
1842 ki_nbytes, [
1843         #include <linux/fs.h>
1844 ],[
1845         struct kiocb iocb;
1846
1847         iocb.ki_nbytes = 0;
1848 ],[
1849         AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
1850 ])
1851 ]) # LC_KIOCB_HAS_NBYTES
1852
1853 #
1854 # LC_BACKING_DEV_INFO_REMOVAL
1855 #
1856 # 3.20 kernel removed backing_dev_info from address_space
1857 #
1858 AC_DEFUN([LC_BACKING_DEV_INFO_REMOVAL], [
1859 LB_CHECK_COMPILE([if struct address_space has backing_dev_info],
1860 backing_dev_info, [
1861         #include <linux/fs.h>
1862 ],[
1863         struct address_space mapping;
1864
1865         mapping.backing_dev_info = NULL;
1866 ],[
1867         AC_DEFINE(HAVE_BACKING_DEV_INFO, 1, [backing_dev_info exist])
1868 ])
1869 ]) # LC_BACKING_DEV_INFO_REMOVAL
1870
1871 #
1872 # LC_HAVE_BDI_CAP_MAP_COPY
1873 #
1874 # 3.20  removed mmap handling for backing devices since
1875 #       it breaks on non-MMU systems. See kernel commit
1876 #       b4caecd48005fbed3949dde6c1cb233142fd69e9
1877 #
1878 AC_DEFUN([LC_HAVE_BDI_CAP_MAP_COPY], [
1879 LB_CHECK_COMPILE([if have 'BDI_CAP_MAP_COPY'],
1880 bdi_cap_map_copy, [
1881         #include <linux/backing-dev.h>
1882 ],[
1883         struct backing_dev_info info;
1884
1885         info.capabilities = BDI_CAP_MAP_COPY;
1886 ],[
1887         AC_DEFINE(HAVE_BDI_CAP_MAP_COPY, 1,
1888                 [BDI_CAP_MAP_COPY exist])
1889 ])
1890 ]) # LC_HAVE_BDI_CAP_MAP_COPY
1891
1892 #
1893 # LC_CANCEL_DIRTY_PAGE
1894 #
1895 # 4.0.0 kernel removed cancel_dirty_page
1896 #
1897 AC_DEFUN([LC_CANCEL_DIRTY_PAGE], [
1898 LB_CHECK_COMPILE([if cancel_dirty_page still exist],
1899 cancel_dirty_page, [
1900         #include <linux/mm.h>
1901 ],[
1902         cancel_dirty_page(NULL, PAGE_SIZE);
1903 ],[
1904         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1905                 [cancel_dirty_page is still available])
1906 ])
1907 ]) # LC_CANCEL_DIRTY_PAGE
1908
1909 #
1910 # LC_IOV_ITER_RW
1911 #
1912 # 4.1 kernel has iov_iter_rw
1913 #
1914 AC_DEFUN([LC_IOV_ITER_RW], [
1915 LB_CHECK_COMPILE([if iov_iter_rw exist],
1916 iov_iter_rw, [
1917         #include <linux/fs.h>
1918         #include <linux/uio.h>
1919 ],[
1920         struct iov_iter *iter = NULL;
1921
1922         iov_iter_rw(iter);
1923 ],[
1924         AC_DEFINE(HAVE_IOV_ITER_RW, 1,
1925                 [iov_iter_rw exist])
1926 ])
1927 ]) # LC_IOV_ITER_RW
1928
1929 #
1930 # LC_HAVE_SYNC_READ_WRITE
1931 #
1932 # 4.1 new_sync_[read|write] no longer exported
1933 #
1934 AC_DEFUN([LC_HAVE_SYNC_READ_WRITE], [
1935 LB_CHECK_EXPORT([new_sync_read], [fs/read_write.c],
1936         [AC_DEFINE(HAVE_SYNC_READ_WRITE, 1,
1937                         [new_sync_[read|write] is exported by the kernel])])
1938 ]) # LC_HAVE_SYNC_READ_WRITE
1939
1940 #
1941 # LC_NEW_CANCEL_DIRTY_PAGE
1942 #
1943 # 4.2 kernel has new cancel_dirty_page
1944 #
1945 AC_DEFUN([LC_NEW_CANCEL_DIRTY_PAGE], [
1946 LB_CHECK_COMPILE([if cancel_dirty_page with one argument exist],
1947 new_cancel_dirty_page, [
1948         #include <linux/mm.h>
1949 ],[
1950         cancel_dirty_page(NULL);
1951 ],[
1952         AC_DEFINE(HAVE_NEW_CANCEL_DIRTY_PAGE, 1,
1953                 [cancel_dirty_page with one arguement is available])
1954 ])
1955 ]) # LC_NEW_CANCEL_DIRTY_PAGE
1956
1957 #
1958 # LC_SYMLINK_OPS_USE_NAMEIDATA
1959 #
1960 # For the 4.2+ kernels the file system internal symlink api no
1961 # longer uses struct nameidata as a argument
1962 #
1963 AC_DEFUN([LC_SYMLINK_OPS_USE_NAMEIDATA], [
1964 LB_CHECK_COMPILE([if symlink inode operations have struct nameidata argument],
1965 symlink_use_nameidata, [
1966         #include <linux/namei.h>
1967         #include <linux/fs.h>
1968 ],[
1969         struct nameidata *nd = NULL;
1970
1971         ((struct inode_operations *)0)->follow_link(NULL, nd);
1972         ((struct inode_operations *)0)->put_link(NULL, nd, NULL);
1973 ],[
1974         AC_DEFINE(HAVE_SYMLINK_OPS_USE_NAMEIDATA, 1,
1975                 [symlink inode operations need struct nameidata argument])
1976 ])
1977 ]) # LC_SYMLINK_OPS_USE_NAMEIDATA
1978
1979 #
1980 # LC_BIO_ENDIO_USES_ONE_ARG
1981 #
1982 # 4.2 kernel bio_endio now only takes one argument
1983 #
1984 AC_DEFUN([LC_BIO_ENDIO_USES_ONE_ARG], [
1985 LB_CHECK_COMPILE([if 'bio_endio' with one argument exist],
1986 bio_endio, [
1987         #include <linux/bio.h>
1988 ],[
1989         bio_endio(NULL);
1990 ],[
1991         AC_DEFINE(HAVE_BIO_ENDIO_USES_ONE_ARG, 1,
1992                 [bio_endio takes only one argument])
1993 ])
1994 ]) # LC_BIO_ENDIO_USES_ONE_ARG
1995
1996 #
1997 # LC_HAVE_LOOP_CTL_GET_FREE
1998 #
1999 # 4.x kernel have moved userspace APIs to
2000 # the separate directory and all of them
2001 # support LOOP_CTL_GET_FREE
2002 #
2003 AC_DEFUN([LC_HAVE_LOOP_CTL_GET_FREE], [
2004 LB_CHECK_FILE([$LINUX/include/linux/loop.h], [
2005         LB_CHECK_COMPILE([if have 'HAVE_LOOP_CTL_GET_FREE'],
2006         LOOP_CTL_GET_FREE, [
2007                 #include <linux/loop.h>
2008         ],[
2009                 int i;
2010
2011                 i = LOOP_CTL_GET_FREE;
2012         ],[
2013                 AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2014                         [LOOP_CTL_GET_FREE exist])
2015         ])
2016 ],[
2017         AC_DEFINE(HAVE_LOOP_CTL_GET_FREE, 1,
2018                 [kernel has LOOP_CTL_GET_FREE])
2019 ])
2020 ]) # LC_HAVE_LOOP_CTL_GET_FREE
2021
2022 #
2023 # LC_HAVE_CACHE_HEAD_HLIST
2024 #
2025 # 4.3 kernel swiched to hlist for cache_head
2026 #
2027 AC_DEFUN([LC_HAVE_CACHE_HEAD_HLIST], [
2028 LB_CHECK_COMPILE([if 'struct cache_head' has 'cache_list' field],
2029 cache_head_has_hlist, [
2030         #include <linux/sunrpc/cache.h>
2031 ],[
2032         do {} while(sizeof(((struct cache_head *)0)->cache_list));
2033 ],[
2034         AC_DEFINE(HAVE_CACHE_HEAD_HLIST, 1,
2035                 [cache_head has hlist cache_list])
2036 ])
2037 ]) # LC_HAVE_CACHE_HEAD_HLIST
2038
2039 #
2040 # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2041 #
2042 # 4.4 kernel have moved locks API users to
2043 # locks_lock_inode_wait()
2044 #
2045 AC_DEFUN([LC_HAVE_LOCKS_LOCK_FILE_WAIT], [
2046 LB_CHECK_COMPILE([if 'locks_lock_file_wait' exists],
2047 locks_lock_file_wait, [
2048         #include <linux/fs.h>
2049 ],[
2050         locks_lock_file_wait(NULL, NULL);
2051 ],[
2052         AC_DEFINE(HAVE_LOCKS_LOCK_FILE_WAIT, 1,
2053                 [kernel has locks_lock_file_wait])
2054 ])
2055 ]) # LC_HAVE_LOCKS_LOCK_FILE_WAIT
2056
2057 #
2058 # LC_HAVE_QC_MAKE_REQUEST_FN
2059 #
2060 # 4.4 request_queue.make_request_fn defined as function returns with blk_qc_t
2061 # see kernel commit dece16353ef47d8d33f5302bc158072a9d65e26f
2062 #
2063 AC_DEFUN([LC_HAVE_QC_MAKE_REQUEST_FN], [
2064 LB_CHECK_COMPILE([if 'request_queue.make_request_fn' returns blk_qc_t],
2065 make_request_fn_blk_qc_t, [
2066         #include <linux/blkdev.h>
2067 ],[
2068         blk_qc_t ret;
2069         make_request_fn *mrf;
2070         ret = mrf(NULL, NULL);
2071 ],[
2072         AC_DEFINE(HAVE_QC_MAKE_REQUEST_FN, 1,
2073                 [request_queue.make_request_fn returns blk_qc_t])
2074 ])
2075 ]) # LC_HAVE_QC_MAKE_REQUEST_FN
2076
2077 #
2078 # LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2079 #
2080 # 4.4 kernel merged type-specific data with the payload data for keys
2081 #
2082 AC_DEFUN([LC_HAVE_KEY_PAYLOAD_DATA_ARRAY], [
2083 LB_CHECK_COMPILE([if 'struct key' has 'payload.data' as an array],
2084 key_payload_data_array, [
2085         #include <linux/key.h>
2086 ],[
2087         ((struct key *)0)->payload.data[0] = NULL;
2088 ],[
2089         AC_DEFINE(HAVE_KEY_PAYLOAD_DATA_ARRAY, 1, [payload.data is an array])
2090 ])
2091 ]) #LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2092
2093 #
2094 # LC_HAVE_FILE_DENTRY
2095 #
2096 # 4.5 adds wrapper file_dentry
2097 #
2098 AC_DEFUN([LC_HAVE_FILE_DENTRY], [
2099 LB_CHECK_COMPILE([if Linux kernel has 'file_dentry'],
2100 file_dentry, [
2101         #include <linux/fs.h>
2102 ],[
2103         file_dentry(NULL);
2104 ], [
2105         AC_DEFINE(HAVE_FILE_DENTRY, 1,
2106                 [kernel has file_dentry])
2107 ])
2108 ]) # LC_HAVE_FILE_DENTRY
2109
2110 #
2111 # LC_HAVE_INODE_LOCK
2112 #
2113 # 4.5 introduced inode_lock
2114 #
2115 AC_DEFUN([LC_HAVE_INODE_LOCK], [
2116 LB_CHECK_COMPILE([if 'inode_lock' is defined],
2117 inode_lock, [
2118         #include <linux/fs.h>
2119 ],[
2120         inode_lock(NULL);
2121 ], [
2122         AC_DEFINE(HAVE_INODE_LOCK, 1,
2123                   [inode_lock is defined])
2124 ])
2125 ]) # LC_HAVE_INODE_LOCK
2126
2127 #
2128 # LC_PROG_LINUX
2129 #
2130 # Lustre linux kernel checks
2131 #
2132 AC_DEFUN([LC_PROG_LINUX], [
2133         AC_MSG_NOTICE([Lustre kernel checks
2134 ==============================================================================])
2135
2136         LC_CONFIG_PINGER
2137         LC_CONFIG_CHECKSUM
2138         LC_CONFIG_HEALTH_CHECK_WRITE
2139         LC_CONFIG_LRU_RESIZE
2140         LC_LLITE_LLOOP_MODULE
2141
2142         LC_GLIBC_SUPPORT_FHANDLES
2143         LC_CONFIG_GSS
2144         LC_HAVE_VOID_OPENSSL_HMAC_FUNCS
2145
2146         # 2.6.32
2147         LC_BLK_QUEUE_MAX_SEGMENTS
2148
2149         # 2.6.34
2150         LC_HAVE_DQUOT_FS_DISK_QUOTA
2151         LC_HAVE_DQUOT_SUSPEND
2152         LC_HAVE_ADD_WAIT_QUEUE_EXCLUSIVE
2153
2154         # 2.6.35, 3.0.0
2155         LC_FILE_FSYNC
2156         LC_EXPORT_SIMPLE_SETATTR
2157         LC_EXPORT_TRUNCATE_COMPLETE_PAGE
2158
2159         # 2.6.36
2160         LC_FS_STRUCT_RWLOCK
2161         LC_SBOPS_EVICT_INODE
2162
2163         # 2.6.37
2164         LC_KERNEL_LOCKED
2165
2166         # 2.6.38
2167         LC_BLKDEV_GET_BY_DEV
2168         LC_GENERIC_PERMISSION
2169         LC_DCACHE_LOCK
2170         LC_INODE_I_RCU
2171         LC_D_COMPARE_7ARGS
2172         LC_D_DELETE_CONST
2173
2174         # 2.6.39
2175         LC_REQUEST_QUEUE_UNPLUG_FN
2176         LC_HAVE_FHANDLE_SYSCALLS
2177         LC_HAVE_FSTYPE_MOUNT
2178         LC_IOP_TRUNCATE
2179         LC_HAVE_INODE_OWNER_OR_CAPABLE
2180         LC_HAVE_SECURITY_IINITSEC
2181
2182         # 3.0
2183         LC_DIRTY_INODE_WITH_FLAG
2184
2185         # 3.1
2186         LC_LM_XXX_LOCK_MANAGER_OPS
2187         LC_INODE_DIO_WAIT
2188         LC_IOP_GET_ACL
2189         LC_FILE_LLSEEK_SIZE
2190         LC_INODE_PERMISION_2ARGS
2191         LC_RADIX_EXCEPTION_ENTRY
2192         LC_HAVE_LOOP_CTL_GET_FREE
2193
2194         # 3.2
2195         LC_HAVE_VOID_MAKE_REQUEST_FN
2196         LC_HAVE_PROTECT_I_NLINK
2197
2198         # 3.3
2199         LC_HAVE_MIGRATE_HEADER
2200         LC_MIGRATEPAGE_4ARGS
2201         LC_SUPEROPS_USE_DENTRY
2202         LC_INODEOPS_USE_UMODE_T
2203         LC_HAVE_CACHE_REGISTER
2204
2205         # 3.4
2206         LC_HAVE_D_MAKE_ROOT
2207         LC_KMAP_ATOMIC_HAS_1ARG
2208
2209         # 3.5
2210         LC_HAVE_CLEAR_INODE
2211         LC_HAVE_ENCODE_FH_PARENT
2212         LC_FILE_LLSEEK_SIZE_5ARG
2213
2214         # 3.6
2215         LC_DATA_FOR_LLITE_IS_LIST
2216         LC_DENTRY_OPEN_USE_PATH
2217         LC_HAVE_IOP_ATOMIC_OPEN
2218         LC_HAVE_SB_START_WRITE
2219
2220         # 3.7
2221         LC_HAVE_POSIXACL_USER_NS
2222
2223         # 3.8
2224         LC_HAVE_FILE_F_INODE
2225         LC_HAVE_FILE_INODE
2226         LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
2227
2228         # 3.9
2229         LC_HAVE_HLIST_FOR_EACH_3ARG
2230         LC_HAVE_BIO_END_SECTOR
2231
2232         # 3.10
2233         LC_BLKDEV_RELEASE_RETURN_INT
2234         LC_HAVE_REMOVE_PROC_SUBTREE
2235         LC_HAVE_PROC_REMOVE
2236
2237         # 3.11
2238         LC_INVALIDATE_RANGE
2239         LC_HAVE_DIR_CONTEXT
2240         LC_D_COMPARE_5ARGS
2241         LC_HAVE_DCOUNT
2242         LC_HAVE_DENTRY_D_U_D_ALIAS
2243         LC_HAVE_DENTRY_D_CHILD
2244
2245         # 3.12
2246         LC_OLDSIZE_TRUNCATE_PAGECACHE
2247         LC_KIOCB_KI_LEFT
2248
2249         # 3.13
2250         LC_VFS_RENAME_5ARGS
2251         LC_VFS_UNLINK_3ARGS
2252
2253         # 3.14
2254         LC_HAVE_BVEC_ITER
2255         LC_HAVE_TRUNCATE_IPAGES_FINAL
2256
2257         # 3.15
2258         LC_VFS_RENAME_6ARGS
2259
2260         # 3.16
2261         LC_DIRECTIO_USE_ITER
2262         LC_HAVE_IOV_ITER_INIT_DIRECTION
2263         LC_HAVE_IOV_ITER_TRUNCATE
2264         LC_HAVE_FILE_OPERATIONS_READ_WRITE_ITER
2265
2266         # 3.17
2267         LC_KEY_MATCH_DATA
2268
2269         # 3.18
2270         LC_PERCPU_COUNTER_INIT
2271         LC_NFS_FILLDIR_USE_CTX
2272
2273         # 3.19
2274         LC_KIOCB_HAS_NBYTES
2275
2276         # 3.20
2277         LC_BACKING_DEV_INFO_REMOVAL
2278         LC_HAVE_BDI_CAP_MAP_COPY
2279
2280         # 4.0.0
2281         LC_CANCEL_DIRTY_PAGE
2282
2283         # 4.1.0
2284         LC_IOV_ITER_RW
2285         LC_HAVE_SYNC_READ_WRITE
2286
2287         # 4.2
2288         LC_NEW_CANCEL_DIRTY_PAGE
2289         LC_BIO_ENDIO_USES_ONE_ARG
2290         LC_SYMLINK_OPS_USE_NAMEIDATA
2291
2292         # 4.3
2293         LC_HAVE_CACHE_HEAD_HLIST
2294
2295         # 4.4
2296         LC_HAVE_LOCKS_LOCK_FILE_WAIT
2297         LC_HAVE_QC_MAKE_REQUEST_FN
2298         LC_HAVE_KEY_PAYLOAD_DATA_ARRAY
2299
2300         # 4.5
2301         LC_HAVE_FILE_DENTRY
2302
2303         # 4.5
2304         LC_HAVE_INODE_LOCK
2305
2306         #
2307         AS_IF([test "x$enable_server" != xno], [
2308                 LC_FUNC_DEV_SET_RDONLY
2309                 LC_STACK_SIZE
2310                 LC_QUOTA64
2311                 LC_QUOTA_CONFIG
2312         ])
2313 ]) # LC_PROG_LINUX
2314
2315 #
2316 # LC_CONFIG_CLIENT
2317 #
2318 # Check whether to build the client side of Lustre
2319 #
2320 AC_DEFUN([LC_CONFIG_CLIENT], [
2321 AC_MSG_CHECKING([whether to build Lustre client support])
2322 AC_ARG_ENABLE([client],
2323         AC_HELP_STRING([--disable-client],
2324                 [disable Lustre client support]),
2325         [], [enable_client="yes"])
2326 AC_MSG_RESULT([$enable_client])
2327 ]) # LC_CONFIG_CLIENT
2328
2329 #
2330 # --enable-mpitests
2331 #
2332 AC_DEFUN([LB_CONFIG_MPITESTS], [
2333 AC_ARG_ENABLE([mpitests],
2334         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
2335                        [include mpi tests]), [
2336                 enable_mpitests="yes"
2337                 case $enableval in
2338                 yes)
2339                         MPICC_WRAPPER="mpicc"
2340                         ;;
2341                 no)
2342                         enable_mpitests="no"
2343                         ;;
2344                 *)
2345                         MPICC_WRAPPER=$enableval
2346                         ;;
2347                 esac
2348         ], [
2349                 enable_mpitests="yes"
2350                 MPICC_WRAPPER="mpicc"
2351         ])
2352
2353         if test "x$enable_mpitests" != "xno"; then
2354                 oldcc=$CC
2355                 CC=$MPICC_WRAPPER
2356                 AC_CACHE_CHECK([whether mpitests can be built],
2357                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2358                         #include <mpi.h>
2359                         int main(void) {
2360                                 int flag;
2361                                 MPI_Initialized(&flag);
2362                                 return 0;
2363                         }
2364                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"])
2365                 ])
2366                 enable_mpitests=$lb_cv_mpi_tests
2367                 CC=$oldcc
2368         fi
2369         AC_SUBST(MPICC_WRAPPER)
2370 ]) # LB_CONFIG_MPITESTS
2371
2372 #
2373 # LC_CONFIG_QUOTA
2374 #
2375 # whether to enable quota support global control
2376 #
2377 AC_DEFUN([LC_CONFIG_QUOTA], [
2378 AC_MSG_CHECKING([whether to enable quota support global control])
2379 AC_ARG_ENABLE([quota],
2380         AC_HELP_STRING([--enable-quota],
2381                 [enable quota support]),
2382         [], [enable_quota="yes"])
2383 AS_IF([test "x$enable_quota" = xyes],
2384         [AC_MSG_RESULT([yes])],
2385         [AC_MSG_RESULT([no])])
2386 ]) # LC_CONFIG_QUOTA
2387
2388 #
2389 # LC_QUOTA
2390 #
2391 AC_DEFUN([LC_QUOTA], [
2392 #check global
2393 LC_CONFIG_QUOTA
2394 #check for utils
2395 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
2396         AC_CHECK_HEADER([sys/quota.h],
2397                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
2398                         [Define to 1 if you have <sys/quota.h>.])],
2399                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
2400 ])
2401 ]) # LC_QUOTA
2402
2403 #
2404 # LC_CONFIG_NODEMAP_PROC_DEBUG
2405 #
2406 # enable nodemap proc file debugging
2407 #
2408 AC_DEFUN([LC_NODEMAP_PROC_DEBUG], [
2409 AC_MSG_CHECKING([whether to enable nodemap proc debug])
2410 AC_ARG_ENABLE([nodemap_proc_debug],
2411         AC_HELP_STRING([--enable-nodemap-proc-debug],
2412                 [enable nodemap proc debug]),
2413         [], [enable_nodemap_proc_debug="no"])
2414 AC_MSG_RESULT([$enable_nodemap_proc_debug])
2415 AS_IF([test "x$enable_nodemap_proc_debug" != xno],
2416         [AC_DEFINE(NODEMAP_PROC_DEBUG, 1,
2417                 [enable nodemap proc debug support])])
2418 ]) # LC_NODEMAP_PROC_DEBUG
2419
2420 #
2421 # LC_LLITE_LLOOP_MODULE
2422 #
2423 # lloop_llite.ko does not currently work with page sizes
2424 # of 64k or larger.
2425 #
2426 AC_DEFUN([LC_LLITE_LLOOP_MODULE], [
2427 LB_CHECK_COMPILE([whether to enable 'llite_lloop' module],
2428 enable_llite_lloop_module, [
2429         #include <asm/page.h>
2430 ],[
2431         #if PAGE_SIZE >= 65536
2432         #error "PAGE_SIZE >= 65536"
2433         #endif
2434 ],
2435         [enable_llite_lloop_module="yes"],
2436         [enable_llite_lloop_module="no"])
2437 ]) # LC_LLITE_LLOOP_MODULE
2438
2439 #
2440 # LC_OSD_ADDON
2441 #
2442 # configure support for optional OSD implementation
2443 #
2444 AC_DEFUN([LC_OSD_ADDON], [
2445 AC_MSG_CHECKING([whether to use OSD addon])
2446 AC_ARG_WITH([osd],
2447         AC_HELP_STRING([--with-osd=path],
2448                 [set path to optional osd]),
2449         [
2450         case "$with_osd" in
2451         no)
2452                 ENABLEOSDADDON=0
2453                 ;;
2454         *)
2455                 OSDADDON="$with_osd"
2456                 ENABLEOSDADDON=1
2457                 ;;
2458         esac
2459         ], [
2460                 ENABLEOSDADDON=0
2461         ])
2462 AS_IF([test $ENABLEOSDADDON -eq 0], [
2463         AC_MSG_RESULT([no])
2464         OSDADDON=""
2465 ], [
2466         OSDMODNAME=$(basename $OSDADDON)
2467         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
2468                 AC_MSG_RESULT([can't link])
2469                 OSDADDON=""
2470         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
2471                 AC_MSG_RESULT([$OSDMODNAME])
2472                 OSDADDON="subdir-m += $OSDMODNAME"
2473         ], [
2474                 AC_MSG_RESULT([can't link])
2475                 OSDADDON=""
2476         ])
2477 ])
2478 AC_SUBST(OSDADDON)
2479 ]) # LC_OSD_ADDON
2480
2481 #
2482 # LC_CONFIGURE
2483 #
2484 # other configure checks
2485 #
2486 AC_DEFUN([LC_CONFIGURE], [
2487 AC_MSG_NOTICE([Lustre core checks
2488 ==============================================================================])
2489
2490 LC_CONFIG_OBD_BUFFER_SIZE
2491
2492 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
2493         [CFLAGS="$CFLAGS -Wall -Werror"])
2494
2495 # maximum MDS thread count
2496 LC_MDS_MAX_THREADS
2497
2498 # lustre/utils/gss/gss_util.c
2499 # lustre/utils/gss/gssd_proc.c
2500 # lustre/utils/gss/krb5_util.c
2501 # lustre/utils/llog_reader.c
2502 # lustre/utils/create_iam.c
2503 # lustre/utils/libiam.c
2504 AC_CHECK_HEADERS([netdb.h endian.h])
2505 AC_CHECK_FUNCS([gethostbyname])
2506
2507 # lustre/utils/llverdev.c
2508 AC_CHECK_HEADERS([blkid/blkid.h])
2509
2510 # lustre/utils/llverfs.c
2511 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2512
2513 SELINUX=""
2514 AC_CHECK_LIB([selinux], [is_selinux_enabled],
2515         [AC_CHECK_HEADERS([selinux/selinux.h],
2516                         [SELINUX="-lselinux"
2517                         AC_DEFINE([HAVE_SELINUX], 1,
2518                                 [support for selinux ])],
2519                         [AC_MSG_WARN([
2520
2521 No libselinux-devel package found, unable to build selinux enabled tools
2522 ])
2523 ])],
2524         [AC_MSG_WARN([
2525
2526 No selinux package found, unable to build selinux enabled tools
2527 ])
2528 ])
2529 AC_SUBST(SELINUX)
2530
2531 # Super safe df
2532 AC_MSG_CHECKING([whether to report minimum OST free space])
2533 AC_ARG_ENABLE([mindf],
2534         AC_HELP_STRING([--enable-mindf],
2535                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2536         [], [enable_mindf="no"])
2537 AC_MSG_RESULT([$enable_mindf])
2538 AS_IF([test "$enable_mindf" = "yes"],
2539         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
2540
2541 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2542 AC_ARG_ENABLE([fail_alloc],
2543         AC_HELP_STRING([--disable-fail-alloc],
2544                 [disable randomly alloc failure]),
2545         [], [enable_fail_alloc="yes"])
2546 AC_MSG_RESULT([$enable_fail_alloc])
2547 AS_IF([test "x$enable_fail_alloc" != xno],
2548         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
2549                 [enable randomly alloc failure])])
2550
2551 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2552 AC_ARG_ENABLE([invariants],
2553         AC_HELP_STRING([--enable-invariants],
2554                 [enable invariant checking (cpu intensive)]),
2555         [], [enable_invariants="no"])
2556 AC_MSG_RESULT([$enable_invariants])
2557 AS_IF([test "x$enable_invariants" = xyes],
2558         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
2559                 [enable invariant checking])])
2560
2561 AC_MSG_CHECKING([whether to track references with lu_ref])
2562 AC_ARG_ENABLE([lu_ref],
2563         AC_HELP_STRING([--enable-lu_ref],
2564                 [enable lu_ref reference tracking code]),
2565         [], [enable_lu_ref="no"])
2566 AC_MSG_RESULT([$enable_lu_ref])
2567 AS_IF([test "x$enable_lu_ref" = xyes],
2568         [AC_DEFINE([USE_LU_REF], 1,
2569                 [enable lu_ref reference tracking code])])
2570
2571 AC_MSG_CHECKING([whether to enable page state tracking])
2572 AC_ARG_ENABLE([pgstate-track],
2573         AC_HELP_STRING([--enable-pgstate-track],
2574                 [enable page state tracking]),
2575         [], [enable_pgstat_track="no"])
2576 AC_MSG_RESULT([$enable_pgstat_track])
2577 AS_IF([test "x$enable_pgstat_track" = xyes],
2578         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
2579                 [enable page state tracking code])])
2580 ]) # LC_CONFIGURE
2581
2582 #
2583 # LC_CONDITIONALS
2584 #
2585 # AM_CONDITIONALS for lustre
2586 #
2587 AC_DEFUN([LC_CONDITIONALS], [
2588 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2589 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2590 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2591 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2592 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2593 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2594 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2595 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2596 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2597 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2598 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
2599 ]) # LC_CONDITIONALS
2600
2601 #
2602 # LC_CONFIG_FILES
2603 #
2604 # files that should be generated with AC_OUTPUT
2605 #
2606 AC_DEFUN([LC_CONFIG_FILES],
2607 [AC_CONFIG_FILES([
2608 lustre/Makefile
2609 lustre/autoMakefile
2610 lustre/autoconf/Makefile
2611 lustre/conf/Makefile
2612 lustre/contrib/Makefile
2613 lustre/doc/Makefile
2614 lustre/include/Makefile
2615 lustre/include/lustre/Makefile
2616 lustre/kernel_patches/targets/3.10-rhel7.target
2617 lustre/kernel_patches/targets/2.6-rhel6.8.target
2618 lustre/kernel_patches/targets/2.6-rhel6.7.target
2619 lustre/kernel_patches/targets/2.6-rhel6.6.target
2620 lustre/kernel_patches/targets/2.6-rhel6.target
2621 lustre/kernel_patches/targets/2.6-rhel5.target
2622 lustre/kernel_patches/targets/2.6-sles11.target
2623 lustre/kernel_patches/targets/3.0-sles11.target
2624 lustre/kernel_patches/targets/3.0-sles11sp3.target
2625 lustre/kernel_patches/targets/3.0-sles11sp4.target
2626 lustre/kernel_patches/targets/3.12-sles12.target
2627 lustre/kernel_patches/targets/2.6-fc11.target
2628 lustre/kernel_patches/targets/2.6-fc12.target
2629 lustre/kernel_patches/targets/2.6-fc15.target
2630 lustre/kernel_patches/targets/3.x-fc18.target
2631 lustre/ldlm/Makefile
2632 lustre/fid/Makefile
2633 lustre/fid/autoMakefile
2634 lustre/llite/Makefile
2635 lustre/llite/autoMakefile
2636 lustre/lov/Makefile
2637 lustre/lov/autoMakefile
2638 lustre/mdc/Makefile
2639 lustre/mdc/autoMakefile
2640 lustre/lmv/Makefile
2641 lustre/lmv/autoMakefile
2642 lustre/lfsck/Makefile
2643 lustre/lfsck/autoMakefile
2644 lustre/mdt/Makefile
2645 lustre/mdt/autoMakefile
2646 lustre/mdd/Makefile
2647 lustre/mdd/autoMakefile
2648 lustre/fld/Makefile
2649 lustre/fld/autoMakefile
2650 lustre/obdclass/Makefile
2651 lustre/obdclass/autoMakefile
2652 lustre/obdclass/linux/Makefile
2653 lustre/obdecho/Makefile
2654 lustre/obdecho/autoMakefile
2655 lustre/ofd/Makefile
2656 lustre/ofd/autoMakefile
2657 lustre/osc/Makefile
2658 lustre/osc/autoMakefile
2659 lustre/ost/Makefile
2660 lustre/ost/autoMakefile
2661 lustre/osd-ldiskfs/Makefile
2662 lustre/osd-ldiskfs/autoMakefile
2663 lustre/osd-zfs/Makefile
2664 lustre/osd-zfs/autoMakefile
2665 lustre/mgc/Makefile
2666 lustre/mgc/autoMakefile
2667 lustre/mgs/Makefile
2668 lustre/mgs/autoMakefile
2669 lustre/target/Makefile
2670 lustre/ptlrpc/Makefile
2671 lustre/ptlrpc/autoMakefile
2672 lustre/ptlrpc/gss/Makefile
2673 lustre/ptlrpc/gss/autoMakefile
2674 lustre/quota/Makefile
2675 lustre/quota/autoMakefile
2676 lustre/scripts/Makefile
2677 lustre/tests/Makefile
2678 lustre/tests/mpi/Makefile
2679 lustre/utils/Makefile
2680 lustre/utils/gss/Makefile
2681 lustre/osp/Makefile
2682 lustre/osp/autoMakefile
2683 lustre/lod/Makefile
2684 lustre/lod/autoMakefile
2685 ])
2686 ]) # LC_CONFIG_FILES