config/lustre-build-ldiskfs.m4

   1 #
   2 # LDISKFS_LINUX_SERIES
   3 #
   4 AC_DEFUN([LDISKFS_LINUX_SERIES], [
   5 AC_MSG_CHECKING([which ldiskfs series to use])
   6 case x$LDISKFS_SERIES in
   7         x)                      # not set
   8                 ;;
   9         *.series)               # set externally
  10                 ;;
  11         *) LDISKFS_SERIES=
  12 esac
  13 AS_IF([test -z "$LDISKFS_SERIES"], [
  14 AS_IF([test x$RHEL_KERNEL = xyes], [
  15         case $RHEL_RELEASE_NO in
  16         82)     LDISKFS_SERIES="4.18-rhel8.2.series"    ;;
  17         81)     LDISKFS_SERIES="4.18-rhel8.1.series"    ;;
  18         80)     LDISKFS_SERIES="4.18-rhel8.series"      ;;
  19         79)     LDISKFS_SERIES="3.10-rhel7.9.series"    ;;
  20         78)     LDISKFS_SERIES="3.10-rhel7.8.series"    ;;
  21         77)     LDISKFS_SERIES="3.10-rhel7.7.series"    ;;
  22         76)     LDISKFS_SERIES="3.10-rhel7.6.series"    ;;
  23         esac
  24 ], [test x$SUSE_KERNEL = xyes], [
  25         AS_VERSION_COMPARE([$LINUXRELEASE],[5.3.18],[
  26         AS_VERSION_COMPARE([$LINUXRELEASE],[4.12.14],[], [], [
  27                 suse_conf=$LINUX_OBJ/include/generated/uapi/linux/suse_version.h
  28                 suse_vers=$(awk '[$]2 == "SUSE_VERSION" {print [$]3 }' $suse_conf)
  29                 suse_patchlevel=$(awk '[$]2 == "SUSE_PATCHLEVEL" {print [$]3 }' $suse_conf)
  30                 echo "$suse_conf $suse_vers $suse_patchlevel  ${suse_vers}sp$suse_patchlevel" >> /tmp/log-nb
  31                 case ${suse_vers}sp$suse_patchlevel in # (
  32                 15sp0 ) LDISKFS_SERIES="4.12-sles15.series"
  33                         if test ! -f $LINUX/arch/x86/kernel/cpu/hygon.c ; then
  34                                 # This file was added shortly after -150.22 so
  35                                 # this must be 150.22 or earlier
  36                                 LDISKFS_SERIES="4.12-sles15-22.series"
  37                         fi
  38                         ;; # (
  39                 15sp1 ) LDISKFS_SERIES="4.12-sles15sp1.series"
  40                         if test ! -f $LINUX/arch/x86/kernel/cpu/umwait.c ; then
  41                                 # This file was added after -197.7 so
  42                                 # this must be -197.7 or earlier
  43                                 LDISKFS_SERIES="4.12-sles15sp1-7.series"
  44                         fi
  45                         ;;
  46                 esac
  47         ]
  48         )], [LDISKFS_SERIES="5.4.21-ml.series"],
  49             [LDISKFS_SERIES="5.4.21-ml.series"])
  50 ], [test x$UBUNTU_KERNEL = xyes], [
  51         AS_VERSION_COMPARE([$LINUXRELEASE],[5.4.0],[
  52         AS_VERSION_COMPARE([$LINUXRELEASE],[5.0.0],[
  53         AS_VERSION_COMPARE([$LINUXRELEASE],[4.15.0],[
  54         AS_VERSION_COMPARE([$LINUXRELEASE],[4.4.0], [],
  55         [
  56                 KPLEV=$(echo $LINUXRELEASE | sed -n 's/.*-\([0-9]\+\).*/\1/p')
  57                 AS_IF(
  58                         [test -z "$KPLEV"], [
  59                                 AC_MSG_WARN([Failed to determine Kernel patch level. Assume latest.])
  60                                 LDISKFS_SERIES="4.4.0-73-ubuntu14+16.series"
  61                         ],
  62                         [test $KPLEV -ge 73], [LDISKFS_SERIES="4.4.0-73-ubuntu14+16.series"],
  63                         [test $KPLEV -ge 62], [LDISKFS_SERIES="4.4.0-62-ubuntu14+16.series"],
  64                         [test $KPLEV -ge 49], [LDISKFS_SERIES="4.4.0-49-ubuntu14+16.series"],
  65                         [LDISKFS_SERIES="4.4.0-45-ubuntu14+16.series"]
  66                 )
  67         ],
  68         [LDISKFS_SERIES="4.4.0-73-ubuntu14+16.series"])],
  69         [
  70                 KPLEV=$(echo $LINUXRELEASE | sed -n 's/.*-\([0-9]\+\).*/\1/p')
  71                 AS_IF(
  72                         [test -z "$KPLEV"], [
  73                                 AC_MSG_WARN([Failed to determine Kernel patch level. Assume latest.])
  74                                 LDISKFS_SERIES="4.15.0-24-ubuntu18.series"
  75                         ],
  76                         [test $KPLEV -ge 24], [LDISKFS_SERIES="4.15.0-24-ubuntu18.series"],
  77                         [test $KPLEV -ge 20], [LDISKFS_SERIES="4.15.0-20-ubuntu18.series"]
  78                 )
  79         ],
  80         [LDISKFS_SERIES="4.15.0-24-ubuntu18.series"])],
  81         [LDISKFS_SERIES="5.0.0-13-ubuntu19.series"],
  82         [LDISKFS_SERIES="5.0.0-13-ubuntu19.series"])],
  83         [LDISKFS_SERIES="5.4.0-42-ubuntu20.series"],
  84         [LDISKFS_SERIES="5.4.0-42-ubuntu20.series"],
  85         [LDISKFS_SERIES="5.4.0-ml.series"])
  86 ])
  87 ])
  88 # Not RHEL/SLES or Ubuntu .. probably mainline
  89 AS_IF([test -z "$LDISKFS_SERIES"],
  90         [
  91         AS_VERSION_COMPARE([$LINUXRELEASE],[5.4.0],[],
  92         [LDISKFS_SERIES="5.4.0-ml.series"],[
  93         AS_VERSION_COMPARE([$LINUXRELEASE],[5.4.21],
  94                 [LDISKFS_SERIES="5.4.0-ml.series"],  # lt
  95                 [LDISKFS_SERIES="5.4.21-ml.series"], # eq
  96                 [LDISKFS_SERIES="5.4.21-ml.series"]  # gt
  97                 )])
  98         ],
  99 [])
 100 AS_IF([test -z "$LDISKFS_SERIES"],
 101         [AC_MSG_RESULT([failed to identify series])],
 102         [AC_MSG_RESULT([$LDISKFS_SERIES for $LINUXRELEASE])])
 103 AC_SUBST(LDISKFS_SERIES)
 104 ]) # LDISKFS_LINUX_SERIES
 105
 106 #
 107 # LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD
 108 #
 109 # 2.6.32-rc7 ext4_free_blocks requires struct buffer_head
 110 # Note that RHEL6 is pre 2.6.32-rc7 so this check is still needed.
 111 #
 112 AC_DEFUN([LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD], [
 113 LB_CHECK_COMPILE([if 'ext4_free_blocks' needs 'struct buffer_head'],
 114 ext4_free_blocks_with_buffer_head, [
 115         #include <linux/fs.h>
 116         #include "$EXT4_SRC_DIR/ext4.h"
 117 ],[
 118         ext4_free_blocks(NULL, NULL, NULL, 0, 0, 0);
 119 ],[
 120         AC_DEFINE(HAVE_EXT_FREE_BLOCK_WITH_BUFFER_HEAD, 1,
 121                 [ext4_free_blocks do not require struct buffer_head])
 122 ])
 123 ]) # LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD
 124
 125 #
 126 # LB_EXT4_JOURNAL_START_3ARGS
 127 #
 128 # 3.9 added a type argument to ext4_journal_start and friends
 129 #
 130 AC_DEFUN([LB_EXT4_JOURNAL_START_3ARGS], [
 131 LB_CHECK_COMPILE([if ext4_journal_start takes 3 arguments],
 132 ext4_journal_start, [
 133         #include <linux/fs.h>
 134         #include "$EXT4_SRC_DIR/ext4_jbd2.h"
 135 ],[
 136         ext4_journal_start(NULL, 0, 0);
 137 ],[
 138         AC_DEFINE(JOURNAL_START_HAS_3ARGS, 1, [ext4_journal_start takes 3 arguments])
 139 ])
 140 ]) # LB_EXT4_JOURNAL_START_3ARGS
 141
 142 #
 143 # LB_EXT4_BREAD_4ARGS
 144 #
 145 # 3.18 ext4_bread has 4 arguments
 146 # NOTE: It may not be exported for modules, use a positive compiler test here.
 147 #
 148 AC_DEFUN([LB_EXT4_BREAD_4ARGS], [
 149 LB_CHECK_COMPILE([if ext4_bread takes 4 arguments],
 150 ext4_bread, [
 151         #include <linux/fs.h>
 152         #include "$EXT4_SRC_DIR/ext4.h"
 153
 154         struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode,
 155                                        ext4_lblk_t block, int map_flags)
 156         {
 157                 struct buffer_head *bh = NULL;
 158                 (void)handle;
 159                 (void)inode;
 160                 (void)block;
 161                 (void)map_flags;
 162                 return bh;
 163         }
 164 ],[
 165         ext4_bread(NULL, NULL, 0, 0);
 166 ],[
 167         AC_DEFINE(HAVE_EXT4_BREAD_4ARGS, 1, [ext4_bread takes 4 arguments])
 168 ])
 169 ]) # LB_EXT4_BREAD_4ARGS
 170
 171 #
 172 # LB_EXT4_HAVE_INFO_DQUOT
 173 #
 174 # in linux 4.4 i_dqout is in ext4_inode_info, not in struct inode
 175 #
 176 AC_DEFUN([LB_EXT4_HAVE_INFO_DQUOT], [
 177 LB_CHECK_COMPILE([if i_dquot is in ext4_inode_info],
 178 ext4_info_dquot, [
 179         #include <linux/fs.h>
 180         #include <linux/quota.h>
 181         #include "$EXT4_SRC_DIR/ext4.h"
 182 ],[
 183         struct ext4_inode_info in;
 184         struct dquot *dq;
 185
 186         dq = in.i_dquot[0];
 187 ],[
 188         AC_DEFINE(HAVE_EXT4_INFO_DQUOT, 1, [i_dquot is in ext4_inode_info])
 189 ])
 190 ]) # LB_EXT4_HAVE_INFO_DQUOT
 191
 192 #
 193 # LB_EXT4_HAVE_I_CRYPT_INFO
 194 #
 195 # in linux 4.8 i_crypt_info moved from ext4_inode_info to struct inode
 196 #
 197 # Determine if we need to enable CONFIG_LDISKFS_FS_ENCRYPTION.
 198 # If we have i_crypt_info in ext4_inode_info, the config option
 199 # should be enabled to make the ldiskfs module compilation happy.
 200 # Otherwise i_crypy_info is in struct inode, we need to check kernel
 201 # config option to determine that.
 202 #
 203 AC_DEFUN([LB_EXT4_HAVE_I_CRYPT_INFO], [
 204 LB_CHECK_COMPILE([if i_crypt_info is in ext4_inode_info],
 205 ext4_i_crypt_info, [
 206         #define CONFIG_EXT4_FS_ENCRYPTION 1
 207         #include <linux/fs.h>
 208         #include "$EXT4_SRC_DIR/ext4.h"
 209 ],[
 210         struct ext4_inode_info in;
 211
 212         in.i_crypt_info = NULL;
 213 ],[
 214         AC_DEFINE(
 215                 CONFIG_LDISKFS_FS_ENCRYPTION, 1,
 216                 [enable encryption for ldiskfs]
 217         )
 218 ],[
 219         LB_CHECK_CONFIG([EXT4_FS_ENCRYPTION],[
 220                 AC_DEFINE(
 221                         CONFIG_LDISKFS_FS_ENCRYPTION, 1,
 222                         [enable encryption for ldiskfs]
 223                 )
 224         ])
 225 ])
 226 ]) # LB_EXT4_HAVE_I_CRYPT_INFO
 227
 228 #
 229 # LB_LDISKFS_IGET_HAS_FLAGS_ARG
 230 #
 231 # kernel 4.19 commit 8a363970d1dc38c4ec4ad575c862f776f468d057
 232 # ext4_iget changed to a macro with 3 args was function with 2 args
 233 #
 234 AC_DEFUN([LB_LDISKFS_IGET_HAS_FLAGS_ARG], [
 235 tmp_flags="$EXTRA_KCFLAGS"
 236 EXTRA_KCFLAGS="-Werror"
 237 LB_CHECK_COMPILE([if ldiskfs_iget takes a flags argument],
 238 ext4_iget_3args, [
 239         #include <linux/fs.h>
 240         #include "$EXT4_SRC_DIR/ext4.h"
 241 ],[
 242         int f = EXT4_IGET_SPECIAL;
 243         (void)f;
 244 ],[
 245         AC_DEFINE(HAVE_LDISKFS_IGET_WITH_FLAGS, 1,
 246                 [if ldiskfs_iget takes a flags argument])
 247 ])
 248 EXTRA_KCFLAGS="$tmp_flags"
 249 ]) # LB_LDISKFS_IGET_HAS_FLAGS_ARG
 250
 251 #
 252 # LDISKFS_AC_PATCH_PROGRAM
 253 #
 254 # Determine which program should be used to apply the patches to
 255 # the ext4 source code to produce the ldiskfs source code.
 256 #
 257 AC_DEFUN([LDISKFS_AC_PATCH_PROGRAM], [
 258         AC_ARG_ENABLE([quilt],
 259                 [AC_HELP_STRING([--disable-quilt],
 260                         [disable use of quilt for ldiskfs])],
 261                 [AS_IF([test "x$enableval" = xno],
 262                         [use_quilt=no],
 263                         [use_quilt=maybe])],
 264                 [use_quilt=maybe]
 265         )
 266
 267         AS_IF([test x$use_quilt = xmaybe], [
 268                 AC_PATH_PROG([quilt_avail], [quilt], [no])
 269                 AS_IF([test x$quilt_avail = xno], [
 270                         use_quilt=no
 271                 ], [
 272                         use_quilt=yes
 273                 ])
 274         ])
 275
 276         AS_IF([test x$use_quilt = xno], [
 277                 AC_PATH_PROG([patch_avail], [patch], [no])
 278                 AS_IF([test x$patch_avail = xno], [
 279                         AC_MSG_ERROR([*** Need "quilt" or "patch" command])
 280                 ])
 281         ])
 282 ]) # LDISKFS_AC_PATCH_PROGRAM
 283
 284 #
 285 # LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS
 286 #
 287 # kernel 5.2 commit 8a363970d1dc38c4ec4ad575c862f776f468d057
 288 # ext4: avoid declaring fs inconsistent due to invalid file handles
 289 # __ext4_find_entry became a helper function for ext4_find_entry
 290 # conflicting with previous ldiskfs patches.
 291 # ldiskfs patches map ext4_find_entry to ldiskfs_find_entry_locked to
 292 # avoid conflicting with __ext4_find_entry
 293 #
 294 # When the following check succeeds __ext4_find_entry helper is not
 295 # used.
 296 #
 297 AC_DEFUN([LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS], [
 298 tmp_flags="$EXTRA_KCFLAGS"
 299 EXTRA_KCFLAGS="-Werror"
 300 LB_CHECK_COMPILE([if __ldiskfs_find_entry is available],
 301 ldiskfs_find_entry_locked, [
 302         #include <linux/fs.h>
 303         #include "$EXT4_SRC_DIR/ext4.h"
 304         #include "$EXT4_SRC_DIR/namei.c"
 305
 306         static int __ext4_find_entry(void) { return 0; }
 307 ],[
 308         int x = __ext4_find_entry();
 309         (void)x;
 310 ],[
 311         AC_DEFINE(HAVE___LDISKFS_FIND_ENTRY, 1,
 312                 [if __ldiskfs_find_entry is available])
 313 ])
 314 EXTRA_KCFLAGS="$tmp_flags"
 315 ]) # LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS
 316
 317 #
 318 # LB_LDISKFSFS_DIRHASH_WANTS_DIR
 319 #
 320 # kernel 5.2 commit 8a363970d1dc38c4ec4ad575c862f776f468d057
 321 # ext4fs_dirhash UNICODE support
 322 #
 323 AC_DEFUN([LB_LDISKFSFS_DIRHASH_WANTS_DIR], [
 324 tmp_flags="$EXTRA_KCFLAGS"
 325 EXTRA_KCFLAGS="-Werror"
 326 LB_CHECK_COMPILE([if ldiskfsfs_dirhash takes an inode argument],
 327 ext4fs_dirhash, [
 328         #include <linux/fs.h>
 329         #include "$EXT4_SRC_DIR/ext4.h"
 330
 331         int ext4fs_dirhash(const struct inode *dir, const char *name, int len,
 332                           struct dx_hash_info *hinfo)
 333         {
 334                 (void)dir;
 335                 (void)name;
 336                 (void)len;
 337                 (void)hinfo;
 338                 return 0;
 339         }
 340 ],[
 341         int f = ext4fs_dirhash(NULL, NULL, 0, NULL);
 342         (void)f;
 343 ],[
 344         AC_DEFINE(HAVE_LDISKFSFS_GETHASH_INODE_ARG, 1,
 345                 [ldiskfsfs_dirhash takes an inode argument])
 346 ])
 347 EXTRA_KCFLAGS="$tmp_flags"
 348 ]) # LB_LDISKFSFS_DIRHASH_WANTS_DIR
 349
 350 #
 351 # LB_JBD2_H_TOTAL_CREDITS
 352 #
 353 # kernel 5.5 commit 933f1c1e0b75bbc29730eef07c9e196c6dfd37e5
 354 # jbd2: Reserve space for revoke descriptor blocks
 355 #
 356 AC_DEFUN([LB_JBD2_H_TOTAL_CREDITS], [
 357 tmp_flags="$EXTRA_KCFLAGS"
 358 EXTRA_KCFLAGS="-Werror"
 359 LB_CHECK_COMPILE([if struct jbd2_journal_handle has h_total_credits member],
 360 handle_t_h_revoke_credits, [
 361         #include <linux/jbd2.h>
 362 ],[
 363         int x = offsetof(struct jbd2_journal_handle, h_total_credits);
 364         (void)x;
 365 ],[
 366         AC_DEFINE(HAVE_JOURNAL_TOTAL_CREDITS, 1,
 367                 [struct jbd2_journal_handle has h_total_credits member])
 368 ])
 369 EXTRA_KCFLAGS="$tmp_flags"
 370 ]) # LB_JBD2_H_TOTAL_CREDITS
 371
 372 #
 373 # LB_CONFIG_LDISKFS
 374 #
 375 AC_DEFUN([LB_CONFIG_LDISKFS], [
 376 # --with-ldiskfs is deprecated now that ldiskfs is fully merged with lustre.
 377 # However we continue to support this option through Lustre 2.5.
 378 AC_ARG_WITH([ldiskfs],
 379         [],
 380         [AC_MSG_WARN([--with-ldiskfs is deprecated, please use --enable-ldiskfs])
 381         AS_IF([test x$withval != xyes -a x$withval != xno],
 382                 [AC_MSG_ERROR([
 383
 384 The ldiskfs option is deprecated,
 385 and no longer supports paths to external ldiskfs source
 386 ])])
 387 ])
 388
 389 AC_ARG_ENABLE([ldiskfs],
 390         [AS_HELP_STRING([--disable-ldiskfs],
 391                 [disable ldiskfs osd (default is enable)])],
 392         [AS_IF([test x$enable_ldiskfs != xyes -a x$enable_ldiskfs != xno],
 393                 [AC_MSG_ERROR([ldiskfs valid options are "yes" or "no"])])],
 394         [AS_IF([test "${with_ldiskfs+set}" = set],
 395                 [enable_ldiskfs=$with_ldiskfs],
 396                 [enable_ldiskfs=maybe])
 397 ])
 398
 399 AS_IF([test x$enable_server = xno],
 400         [AS_CASE([$enable_ldiskfs],
 401                 [maybe], [enable_ldiskfs=no],
 402                 [yes], [AC_MSG_ERROR([cannot build ldiskfs when servers are disabled])]
 403         )])
 404
 405 AS_IF([test x$enable_ldiskfs != xno],[
 406         # In the future, we chould change enable_ldiskfs from maybe to
 407         # either yes or no based on additional tests, e.g.  whether a patch
 408         # set is available for the detected kernel.  For now, we just always
 409         # set it to "yes".
 410         AS_IF([test x$enable_ldiskfs = xmaybe], [enable_ldiskfs=yes])
 411         AC_SUBST(ENABLE_LDISKFS, yes)
 412
 413         LDISKFS_LINUX_SERIES
 414         LDISKFS_AC_PATCH_PROGRAM
 415         LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD
 416         LB_EXT4_JOURNAL_START_3ARGS
 417         LB_EXT4_BREAD_4ARGS
 418         LB_EXT4_HAVE_INFO_DQUOT
 419         LB_EXT4_HAVE_I_CRYPT_INFO
 420         LB_LDISKFS_IGET_HAS_FLAGS_ARG
 421         LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS
 422         LB_LDISKFSFS_DIRHASH_WANTS_DIR
 423         LB_JBD2_H_TOTAL_CREDITS
 424         AC_DEFINE(CONFIG_LDISKFS_FS_POSIX_ACL, 1, [posix acls for ldiskfs])
 425         AC_DEFINE(CONFIG_LDISKFS_FS_SECURITY, 1, [fs security for ldiskfs])
 426         AC_DEFINE(CONFIG_LDISKFS_FS_XATTR, 1, [extened attributes for ldiskfs])
 427         AC_DEFINE(CONFIG_LDISKFS_FS_RW, 1, [enable rw access for ldiskfs])
 428         AC_SUBST(LDISKFS_SUBDIR, ldiskfs)
 429         AC_DEFINE(HAVE_LDISKFS_OSD, 1, Enable ldiskfs osd)
 430 ], [
 431         AC_SUBST(ENABLE_LDISKFS, no)
 432 ])
 433
 434 AC_MSG_CHECKING([whether to build ldiskfs])
 435 AC_MSG_RESULT([$enable_ldiskfs])
 436
 437 AM_CONDITIONAL([LDISKFS_ENABLED], [test x$enable_ldiskfs = xyes])
 438 ]) # LB_CONFIG_LDISKFS
 439
 440
 441 AC_DEFUN([LB_EXT4_SRC_DIR_SRC], [])
 442 AC_DEFUN([LB_EXT4_SRC_DIR_RESULTS], [])
 443
 444 #
 445 # LB_VALIDATE_EXT4_SRC_DIR
 446 #
 447 # Spot check the existence of several source files common to ext4.
 448 # Detecting this at configure time allows us to avoid a potential build
 449 # failure and provide a useful error message to explain what is wrong.
 450 #
 451 AC_DEFUN([LB_VALIDATE_EXT4_SRC_DIR], [
 452 enable_ldiskfs_build="no"
 453 AS_IF([test -n "$EXT4_SRC_DIR"], [
 454         enable_ldiskfs_build="yes"
 455         LB_CHECK_FILE([$EXT4_SRC_DIR/dir.c], [], [
 456                 enable_ldiskfs_build="no"
 457                 AC_MSG_WARN([ext4 must exist for ldiskfs build])
 458         ])
 459         LB_CHECK_FILE([$EXT4_SRC_DIR/file.c], [], [
 460                 enable_ldiskfs_build="no"
 461                 AC_MSG_WARN([ext4 must exist for ldiskfs build])
 462         ])
 463         LB_CHECK_FILE([$EXT4_SRC_DIR/inode.c], [], [
 464                 enable_ldiskfs_build="no"
 465                 AC_MSG_WARN([ext4 must exist for ldiskfs build])
 466         ])
 467         LB_CHECK_FILE([$EXT4_SRC_DIR/super.c], [], [
 468                 enable_ldiskfs_build="no"
 469                 AC_MSG_WARN([ext4 must exist for ldiskfs build])
 470         ])
 471 ])
 472
 473 AS_IF([test "x$enable_ldiskfs_build" = xno], [
 474         enable_ldiskfs="no"
 475
 476         AC_MSG_WARN([
 477
 478 Disabling ldiskfs support because complete ext4 source does not exist.
 479
 480 If you are building using kernel-devel packages and require ldiskfs
 481 server support then ensure that the matching kernel-debuginfo-common
 482 and kernel-debuginfo-common-<arch> packages are installed.
 483 ])
 484 ])
 485 ]) # LB_VALIDATE_EXT4_SRC_DIR
 486
 487 #
 488 # LB_EXT4_SRC_DIR
 489 #
 490 # Determine the location of the ext4 source code.  It it required
 491 # for several configure tests and to build ldiskfs.
 492 #
 493 AC_DEFUN([LB_EXT4_SRC_DIR], [
 494 AC_MSG_CHECKING([ext4 source directory])
 495 # Kernel ext source located with devel headers
 496 linux_src=$LINUX
 497 AS_IF([test -e "$linux_src/fs/ext4/super.c"], [
 498         EXT4_SRC_DIR="$linux_src/fs/ext4"
 499 ], [
 500         # Kernel ext source provided by kernel-debuginfo-common package
 501         # that extracted to $LINUX
 502         linux_src=$(ls -1d $linux_src/../../debug/*/linux-${LINUXRELEASE%.*}* \
 503                 2>/dev/null | tail -1)
 504         AS_IF([test -e "$linux_src/fs/ext4/super.c"], [
 505                 EXT4_SRC_DIR="$linux_src/fs/ext4"
 506         ], [
 507                 # Kernel ext source provided by kernel-debuginfo-common package
 508                 linux_src=$(ls -1d /usr/src/debug/*/linux-${LINUXRELEASE%.*}* \
 509                         2>/dev/null | tail -1)
 510                 AS_IF([test -e "$linux_src/fs/ext4/super.c"], [
 511                         EXT4_SRC_DIR="$linux_src/fs/ext4"
 512                 ], [
 513                         EXT4_SRC_DIR=""
 514                 ])
 515         ])
 516 ])
 517 AC_MSG_RESULT([$EXT4_SRC_DIR])
 518 AC_SUBST(EXT4_SRC_DIR)
 519
 520 LB_VALIDATE_EXT4_SRC_DIR
 521 ]) # LB_EXT4_SRC_DIR
 522
 523 #
 524 # LB_DEFINE_E2FSPROGS_NAMES
 525 #
 526 # Enable the use of alternate naming of ldiskfs-enabled e2fsprogs package.
 527 #
 528 AC_DEFUN([LB_DEFINE_E2FSPROGS_NAMES], [
 529 AC_MSG_CHECKING([whether to use alternate names for e2fsprogs])
 530 AC_ARG_WITH([ldiskfsprogs],
 531         AC_HELP_STRING([--with-ldiskfsprogs],
 532                 [use alternate names for ldiskfs-enabled e2fsprogs]),
 533         [], [withval="no"])
 534
 535 AS_IF([test "x$withval" = xyes], [
 536         AC_MSG_RESULT([enabled])
 537         AC_DEFINE(HAVE_LDISKFSPROGS, 1, [enable use of ldiskfsprogs package])
 538         E2FSPROGS="ldiskfsprogs"
 539         MKE2FS="mkfs.ldiskfs"
 540         DEBUGFS="debugfs.ldiskfs"
 541         TUNE2FS="tunefs.ldiskfs"
 542         E2LABEL="label.ldiskfs"
 543         DUMPE2FS="dumpfs.ldiskfs"
 544         E2FSCK="fsck.ldiskfs"
 545         PFSCK="pfsck.ldiskfs"
 546 ], [
 547         AC_MSG_RESULT([disabled])
 548         E2FSPROGS="e2fsprogs"
 549         MKE2FS="mke2fs"
 550         DEBUGFS="debugfs"
 551         TUNE2FS="tune2fs"
 552         E2LABEL="e2label"
 553         DUMPE2FS="dumpe2fs"
 554         E2FSCK="e2fsck"
 555         PFSCK="fsck"
 556 ])
 557
 558 AC_DEFINE_UNQUOTED(E2FSPROGS, "$E2FSPROGS", [name of ldiskfs e2fsprogs package])
 559 AC_DEFINE_UNQUOTED(MKE2FS, "$MKE2FS", [name of ldiskfs mkfs program])
 560 AC_DEFINE_UNQUOTED(DEBUGFS, "$DEBUGFS", [name of ldiskfs debug program])
 561 AC_DEFINE_UNQUOTED(TUNE2FS, "$TUNE2FS", [name of ldiskfs tune program])
 562 AC_DEFINE_UNQUOTED(E2LABEL, "$E2LABEL", [name of ldiskfs label program])
 563 AC_DEFINE_UNQUOTED(DUMPE2FS,"$DUMPE2FS", [name of ldiskfs dump program])
 564 AC_DEFINE_UNQUOTED(E2FSCK, "$E2FSCK", [name of ldiskfs fsck program])
 565 AC_DEFINE_UNQUOTED(PFSCK, "$PFSCK", [name of parallel fsck program])
 566
 567 AC_SUBST([E2FSPROGS], [$E2FSPROGS])
 568 AC_SUBST([MKE2FS], [$MKE2FS])
 569 AC_SUBST([DEBUGFS], [$DEBUGFS])
 570 AC_SUBST([TUNE2FS], [$TUNE2FS])
 571 AC_SUBST([E2LABEL], [$E2LABEL])
 572 AC_SUBST([DUMPE2FS], [$DUMPE2FS])
 573 AC_SUBST([E2FSCK], [$E2FSCK])
 574 AC_SUBST([PFSCK], [$PFSCK])
 575 ]) # LB_DEFINE_E2FSPROGS_NAMES