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Strengthen Linux kernel capabilities detection

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- Add `CONFIG_BLOCK` Linux config requirement to
  `ZFS_AC_KERNEL_CONFIG_DEFINED`. OpenZFS won't compile without
  that block device support due to large amount of functional
  dependencies on it.

- Remove dependency on `groups_alloc()` in
  `ZFS_AC_KERNEL_SRC_GROUP_INFO_GID` to circumvent the missing stub
  in Linux 4.X kernel headers.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #13351
This commit is contained in:
Damian Szuberski 2022-04-21 18:37:11 +02:00 committed by GitHub
parent 47a02e3972
commit 2f31b585e7
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 31 additions and 4 deletions
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31
config/kernel-config-defined.m4
View File

@ -19,19 +19,46 @@ AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEFINED], [
])
])
ZFS_AC_KERNEL_SRC_CONFIG_BLOCK
ZFS_AC_KERNEL_SRC_CONFIG_DEBUG_LOCK_ALLOC
ZFS_AC_KERNEL_SRC_CONFIG_TRIM_UNUSED_KSYMS
ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_INFLATE
ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_DEFLATE
ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_INFLATE
AC_MSG_CHECKING([for kernel config option compatibility])
ZFS_LINUX_TEST_COMPILE_ALL([config])
AC_MSG_RESULT([done])
ZFS_AC_KERNEL_CONFIG_BLOCK
ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC
ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS
ZFS_AC_KERNEL_CONFIG_ZLIB_INFLATE
ZFS_AC_KERNEL_CONFIG_ZLIB_DEFLATE
ZFS_AC_KERNEL_CONFIG_ZLIB_INFLATE
])
dnl #
dnl # Check CONFIG_BLOCK
dnl #
dnl # Verify the kernel has CONFIG_BLOCK support enabled.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_BLOCK], [
ZFS_LINUX_TEST_SRC([config_block], [
#if !defined(CONFIG_BLOCK)
#error CONFIG_BLOCK not defined
#endif
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_BLOCK], [
AC_MSG_CHECKING([whether CONFIG_BLOCK is defined])
ZFS_LINUX_TEST_RESULT([config_block], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR([
*** This kernel does not include the required block device support.
*** Rebuild the kernel with CONFIG_BLOCK=y set.])
])
])
dnl #

4
config/kernel-group-info.m4
View File

@ -6,8 +6,8 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GROUP_INFO_GID], [
ZFS_LINUX_TEST_SRC([group_info_gid], [
#include <linux/cred.h>
],[
struct group_info *gi = groups_alloc(1);
gi->gid[0] = KGIDT_INIT(0);
struct group_info gi __attribute__ ((unused)) = {};
gi.gid[0] = KGIDT_INIT(0);
])
])