ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS
ZFS_AC_KERNEL_TYPE_FMODE_T
ZFS_AC_KERNEL_KOBJ_NAME_LEN
+ ZFS_AC_KERNEL_3ARG_BLKDEV_GET
+ ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH
ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE
ZFS_AC_KERNEL_INVALIDATE_BDEV_ARGS
ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE
ZFS_AC_KERNEL_BIO_FAILFAST_DTD
ZFS_AC_KERNEL_REQ_FAILFAST_MASK
ZFS_AC_KERNEL_BIO_END_IO_T_ARGS
+ ZFS_AC_KERNEL_BIO_RW_SYNC
ZFS_AC_KERNEL_BIO_RW_SYNCIO
+ ZFS_AC_KERNEL_REQ_SYNC
ZFS_AC_KERNEL_BLK_END_REQUEST
+ ZFS_AC_KERNEL_BLK_QUEUE_FLUSH
+ ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
+ ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
+ ZFS_AC_KERNEL_BLK_QUEUE_PHYSICAL_BLOCK_SIZE
+ ZFS_AC_KERNEL_BLK_QUEUE_IO_OPT
+ ZFS_AC_KERNEL_BLK_QUEUE_NONROT
+ ZFS_AC_KERNEL_BLK_QUEUE_DISCARD
ZFS_AC_KERNEL_BLK_FETCH_REQUEST
ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST
ZFS_AC_KERNEL_BLK_RQ_BYTES
ZFS_AC_KERNEL_BLK_RQ_POS
ZFS_AC_KERNEL_BLK_RQ_SECTORS
ZFS_AC_KERNEL_GET_DISK_RO
+ ZFS_AC_KERNEL_GET_GENDISK
ZFS_AC_KERNEL_RQ_IS_SYNC
ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT
-
- if test "$LINUX_OBJ" != "$LINUX"; then
+ ZFS_AC_KERNEL_CONST_XATTR_HANDLER
+ ZFS_AC_KERNEL_XATTR_HANDLER_GET
+ ZFS_AC_KERNEL_XATTR_HANDLER_SET
+ ZFS_AC_KERNEL_SHOW_OPTIONS
+ ZFS_AC_KERNEL_FSYNC
+ ZFS_AC_KERNEL_EVICT_INODE
+ ZFS_AC_KERNEL_NR_CACHED_OBJECTS
+ ZFS_AC_KERNEL_FREE_CACHED_OBJECTS
+ ZFS_AC_KERNEL_FALLOCATE
+ ZFS_AC_KERNEL_TRUNCATE_RANGE
+ ZFS_AC_KERNEL_CREATE_UMODE_T
+ ZFS_AC_KERNEL_AUTOMOUNT
+ ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE
+ ZFS_AC_KERNEL_INSERT_INODE_LOCKED
+ ZFS_AC_KERNEL_D_MAKE_ROOT
+ ZFS_AC_KERNEL_D_OBTAIN_ALIAS
+ ZFS_AC_KERNEL_CHECK_DISK_SIZE_CHANGE
+ ZFS_AC_KERNEL_TRUNCATE_SETSIZE
+ ZFS_AC_KERNEL_6ARGS_SECURITY_INODE_INIT_SECURITY
+ ZFS_AC_KERNEL_CALLBACK_SECURITY_INODE_INIT_SECURITY
+ ZFS_AC_KERNEL_MOUNT_NODEV
+ ZFS_AC_KERNEL_SHRINK
+ ZFS_AC_KERNEL_BDI
+ ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER
+ ZFS_AC_KERNEL_SET_NLINK
+
+ AS_IF([test "$LINUX_OBJ" != "$LINUX"], [
KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
- fi
+ ])
AC_SUBST(KERNELMAKE_PARAMS)
dnl # -Wall -fno-strict-aliasing -Wstrict-prototypes and other
dnl # compiler options are added by the kernel build system.
+ KERNELCPPFLAGS="$KERNELCPPFLAGS $NO_UNUSED_BUT_SET_VARIABLE"
KERNELCPPFLAGS="$KERNELCPPFLAGS -DHAVE_SPL -D_KERNEL"
KERNELCPPFLAGS="$KERNELCPPFLAGS -DTEXT_DOMAIN=\\\"zfs-linux-kernel\\\""
AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [
modpost=$LINUX/scripts/Makefile.modpost
AC_MSG_CHECKING([kernel file name for module symbols])
- if test -f "$modpost"; then
- if grep -q Modules.symvers $modpost; then
+ AS_IF([test -f "$modpost"], [
+ AS_IF([grep -q Modules.symvers $modpost], [
LINUX_SYMBOLS=Modules.symvers
- else
+ ], [
LINUX_SYMBOLS=Module.symvers
- fi
- else
+ ])
+
+ AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [
+ AC_MSG_ERROR([
+ *** Please make sure the kernel devel package for your distribution
+ *** is installed. If your building with a custom kernel make sure the
+ *** kernel is configured, built, and the '--with-linux=PATH' configure
+ *** option refers to the location of the kernel source.])
+ ])
+ ], [
LINUX_SYMBOLS=NONE
- fi
+ ])
AC_MSG_RESULT($LINUX_SYMBOLS)
AC_SUBST(LINUX_SYMBOLS)
])
[kernelbuild="$withval"])
AC_MSG_CHECKING([kernel source directory])
- if test -z "$kernelsrc"; then
- headersdir="/lib/modules/$(uname -r)/build"
- if test -e "$headersdir"; then
+ AS_IF([test -z "$kernelsrc"], [
+ AS_IF([test -e "/lib/modules/$(uname -r)/source"], [
+ headersdir="/lib/modules/$(uname -r)/source"
+ sourcelink=$(readlink -f "$headersdir")
+ ], [test -e "/lib/modules/$(uname -r)/build"], [
+ headersdir="/lib/modules/$(uname -r)/build"
sourcelink=$(readlink -f "$headersdir")
- else
+ ], [
sourcelink=$(ls -1d /usr/src/kernels/* \
- /usr/src/linux-* \
+ /usr/src/linux-* \
2>/dev/null | grep -v obj | tail -1)
- fi
+ ])
- if test -n "$sourcelink" && test -e ${sourcelink}; then
+ AS_IF([test -n "$sourcelink" && test -e ${sourcelink}], [
kernelsrc=`readlink -f ${sourcelink}`
- else
+ ], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([
*** Please make sure the kernel devel package for your distribution
*** is installed then try again. If that fails you can specify the
*** location of the kernel source with the '--with-linux=PATH' option.])
- fi
- else
- if test "$kernelsrc" = "NONE"; then
+ ])
+ ], [
+ AS_IF([test "$kernelsrc" = "NONE"], [
kernsrcver=NONE
- fi
- fi
+ ])
+ ])
AC_MSG_RESULT([$kernelsrc])
AC_MSG_CHECKING([kernel build directory])
- if test -z "$kernelbuild"; then
- if test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then
+ AS_IF([test -z "$kernelbuild"], [
+ AS_IF([test -e "/lib/modules/$(uname -r)/build"], [
+ kernelbuild=`readlink -f /lib/modules/$(uname -r)/build`
+ ], [test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}], [
kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu}
- elif test -d ${kernelsrc}-obj/${target_cpu}/default; then
+ ], [test -d ${kernelsrc}-obj/${target_cpu}/default], [
kernelbuild=${kernelsrc}-obj/${target_cpu}/default
- elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then
+ ], [test -d `dirname ${kernelsrc}`/build-${target_cpu}], [
kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu}
- else
+ ], [
kernelbuild=${kernelsrc}
- fi
- fi
+ ])
+ ])
AC_MSG_RESULT([$kernelbuild])
AC_MSG_CHECKING([kernel source version])
utsrelease1=$kernelbuild/include/linux/version.h
utsrelease2=$kernelbuild/include/linux/utsrelease.h
utsrelease3=$kernelbuild/include/generated/utsrelease.h
- if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then
+ AS_IF([test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1], [
utsrelease=linux/version.h
- elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then
+ ], [test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2], [
utsrelease=linux/utsrelease.h
- elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then
+ ], [test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3], [
utsrelease=generated/utsrelease.h
- fi
+ ])
- if test "$utsrelease"; then
+ AS_IF([test "$utsrelease"], [
kernsrcver=`(echo "#include <$utsrelease>";
echo "kernsrcver=UTS_RELEASE") |
cpp -I $kernelbuild/include |
grep "^kernsrcver=" | cut -d \" -f 2`
- if test -z "$kernsrcver"; then
+ AS_IF([test -z "$kernsrcver"], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([*** Cannot determine kernel version.])
- fi
- else
+ ])
+ ], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.])
- fi
+ ])
AC_MSG_RESULT([$kernsrcver])
dnl #
AC_DEFUN([ZFS_AC_SPL_MODULE_SYMVERS], [
AC_MSG_CHECKING([spl file name for module symbols])
- if test -r $SPL_OBJ/Module.symvers; then
+ AS_IF([test -r $SPL_OBJ/Module.symvers], [
SPL_SYMBOLS=Module.symvers
- elif test -r $SPL_OBJ/Modules.symvers; then
+ ], [test -r $SPL_OBJ/Modules.symvers], [
SPL_SYMBOLS=Modules.symvers
- elif test -r $SPL_OBJ/module/Module.symvers; then
+ ], [test -r $SPL_OBJ/module/Module.symvers], [
SPL_SYMBOLS=Module.symvers
- elif test -r $SPL_OBJ/module/Modules.symvers; then
+ ], [test -r $SPL_OBJ/module/Modules.symvers], [
SPL_SYMBOLS=Modules.symvers
- else
+ ], [
SPL_SYMBOLS=$LINUX_SYMBOLS
- fi
+ ])
AC_MSG_RESULT([$SPL_SYMBOLS])
AC_SUBST(SPL_SYMBOLS)
AC_MSG_CHECKING([spl source directory])
- if test -z "$splsrc"; then
+ AS_IF([test -z "$splsrc"], [
sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
2>/dev/null | tail -1`
- if test -z "$sourcelink" || test ! -e $sourcelink; then
+ AS_IF([test -z "$sourcelink" || test ! -e $sourcelink], [
sourcelink=../spl
- fi
+ ])
- if test -e $sourcelink; then
+ AS_IF([test -e $sourcelink], [
splsrc=`readlink -f ${sourcelink}`
- else
+ ], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([
*** Please make sure the spl devel package for your distribution
*** is installed then try again. If that fails you can specify the
*** location of the spl source with the '--with-spl=PATH' option.])
- fi
- else
- if test "$splsrc" = "NONE"; then
+ ])
+ ], [
+ AS_IF([test "$splsrc" = "NONE"], [
splbuild=NONE
splsrcver=NONE
- fi
- fi
+ ])
+ ])
AC_MSG_RESULT([$splsrc])
AC_MSG_CHECKING([spl build directory])
- if test -z "$splbuild"; then
+ AS_IF([test -z "$splbuild"], [
splbuild=${splsrc}
- fi
+ ])
AC_MSG_RESULT([$splbuild])
AC_MSG_CHECKING([spl source version])
- if test -r $splbuild/spl_config.h &&
- fgrep -q SPL_META_VERSION $splbuild/spl_config.h; then
+ AS_IF([test -r $splbuild/spl_config.h &&
+ fgrep -q SPL_META_VERSION $splbuild/spl_config.h], [
splsrcver=`(echo "#include <spl_config.h>";
- echo "splsrcver=SPL_META_VERSION") |
+ echo "splsrcver=SPL_META_VERSION-SPL_META_RELEASE") |
cpp -I $splbuild |
- grep "^splsrcver=" | cut -d \" -f 2`
- fi
+ grep "^splsrcver=" | tr -d \" | cut -d= -f2`
+ ])
- if test -z "$splsrcver"; then
+ AS_IF([test -z "$splsrcver"], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([
- *** Cannot determine the version of the spl source.
- *** Please prepare the spl source before running this script])
- fi
+ *** Cannot determine the version of the spl source.
+ *** Please prepare the spl source before running this script])
+ ])
AC_MSG_RESULT([$splsrcver])
])
dnl #
-dnl # There are certain kernel build options which when enabled are
-dnl # completely incompatible with non GPL kernel modules. It is best
-dnl # to detect these at configure time and fail with a clear error
-dnl # rather than build everything and fail during linking.
-dnl #
-dnl # CONFIG_DEBUG_LOCK_ALLOC - Maps mutex_lock() to mutex_lock_nested()
+dnl # Certain kernel build options are not supported. These must be
+dnl # detected at configure time and cause a build failure. Otherwise
+dnl # modules may be successfully built that behave incorrectly.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_CONFIG], [
- if test "$ZFS_META_LICENSE" = CDDL; then
- ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC],
- AC_MSG_ERROR([
- *** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is
- *** incompatible with the CDDL license. You must rebuild
- *** your kernel without this option.]), [])
- fi
-
- if test "$ZFS_META_LICENSE" = GPL; then
+ AS_IF([test "$ZFS_META_LICENSE" = GPL], [
AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
[Define to 1 if licensed under the GPL])
- fi
+ ])
+
+ ZFS_AC_KERNEL_CONFIG_PREEMPT
+ ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC
+])
+
+dnl #
+dnl # Check CONFIG_PREEMPT
+dnl #
+dnl # Premptible kernels will be supported in the future. But at the
+dnl # moment there are a few places in the code which need to be updated
+dnl # to accomidate them. Until that work occurs we should detect this
+dnl # at configure time and fail with a sensible message. Otherwise,
+dnl # people will be able to build successfully, however they will have
+dnl # stability problems. See https://github.com/zfsonlinux/zfs/issues/83
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_CONFIG_PREEMPT], [
+
+ ZFS_LINUX_CONFIG([PREEMPT],
+ AC_MSG_ERROR([
+ *** Kernel built with CONFIG_PREEMPT which is not supported.
+ *** You must rebuild your kernel without this option.]), [])
+])
+
+dnl #
+dnl # Check CONFIG_DEBUG_LOCK_ALLOC
+dnl #
+dnl # This is typically only set for debug kernels because it comes with
+dnl # a performance penalty. However, when it is set it maps the non-GPL
+dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol.
+dnl # This will cause a failure at link time which we'd rather know about
+dnl # at compile time.
+dnl #
+dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol
+dnl # with the upstream community we add a check to detect this case.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [
+
+ ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC], [
+ AC_MSG_CHECKING([whether mutex_lock() is GPL-only])
+ tmp_flags="$EXTRA_KCFLAGS"
+ ZFS_LINUX_TRY_COMPILE([
+ #include <linux/module.h>
+ #include <linux/mutex.h>
+
+ MODULE_LICENSE("$ZFS_META_LICENSE");
+ ],[
+ struct mutex lock;
+
+ mutex_init(&lock);
+ mutex_lock(&lock);
+ mutex_unlock(&lock);
+ ],[
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_MSG_ERROR([
+ *** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is incompatible
+ *** with the CDDL license and will prevent the module linking stage
+ *** from succeeding. You must rebuild your kernel without this
+ *** option enabled.])
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+ ], [])
])
dnl #
AC_DEFUN([ZFS_LINUX_CONFIG],
[AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
ZFS_LINUX_TRY_COMPILE([
- #ifndef AUTOCONF_INCLUDED
- #include <linux/config.h>
- #endif
+ #include <linux/module.h>
],[
#ifndef CONFIG_$1
#error CONFIG_$1 not #defined
grep -q -E '[[[:space:]]]$1[[[:space:]]]' \
$LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null
rc=$?
- if test $rc -ne 0; then
+ AS_IF([test $rc -ne 0], [
export=0
for file in $2; do
grep -q -E "EXPORT_SYMBOL.*($1)" "$LINUX/$file" 2>/dev/null
rc=$?
- if test $rc -eq 0; then
- export=1
- break;
- fi
+ AS_IF([test $rc -eq 0], [
+ export=1
+ break;
+ ])
done
- if test $export -eq 0; then
+ AS_IF([test $export -eq 0], [
AC_MSG_RESULT([no])
$4
- else
+ ], [
AC_MSG_RESULT([yes])
$3
- fi
- else
+ ])
+ ], [
AC_MSG_RESULT([yes])
$3
- fi
+ ])
])
git://git.camperquake.de / zfs.git / blobdiff