066e825221
Increase the minimum supported kernel version from 2.6.32 to 3.10.
This removes support for the following Linux enterprise distributions.
Distribution | Kernel | End of Life
---------------- | ------ | -------------
Ubuntu 12.04 LTS | 3.2 | Apr 28, 2017
SLES 11 | 3.0 | Mar 32, 2019
RHEL / CentOS 6 | 2.6.32 | Nov 30, 2020
The following changes were made as part of removing support.
* Updated `configure` to enforce a minimum kernel version as
specified in the META file (Linux-Minimum: 3.10).
configure: error:
*** Cannot build against kernel version 2.6.32.
*** The minimum supported kernel version is 3.10.
* Removed all `configure` kABI checks and matching C code for
interfaces which solely predate the Linux 3.10 kernel.
* Updated all `configure` kABI checks to fail when an interface is
missing which was in the 3.10 kernel up to the latest 5.1 kernel.
Removed the HAVE_* preprocessor defines for these checks and
updated the code to unconditionally use the verified interface.
* Inverted the detection logic in several kABI checks to match
the new interface as it appears in 3.10 and newer and not the
legacy interface.
* Consolidated the following checks in to individual files. Due
the large number of changes in the checks it made sense to handle
this now. It would be desirable to group other related checks in
the same fashion, but this as left as future work.
- config/kernel-blkdev.m4 - Block device kABI checks
- config/kernel-blk-queue.m4 - Block queue kABI checks
- config/kernel-bio.m4 - Bio interface kABI checks
* Removed the kABI checks for sops->nr_cached_objects() and
sops->free_cached_objects(). These interfaces are currently unused.
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #9566
398 lines
11 KiB
Plaintext
398 lines
11 KiB
Plaintext
dnl #
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dnl # 2.6.35 API change,
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dnl # The 'struct xattr_handler' was constified in the generic
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dnl # super_block structure.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CONST_XATTR_HANDLER], [
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ZFS_LINUX_TEST_SRC([const_xattr_handler], [
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#include <linux/fs.h>
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#include <linux/xattr.h>
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const struct xattr_handler xattr_test_handler = {
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.prefix = "test",
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.get = NULL,
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.set = NULL,
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};
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const struct xattr_handler *xattr_handlers[] = {
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&xattr_test_handler,
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};
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const struct super_block sb __attribute__ ((unused)) = {
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.s_xattr = xattr_handlers,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CONST_XATTR_HANDLER], [
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AC_MSG_CHECKING([whether super_block uses const struct xattr_handler])
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ZFS_LINUX_TEST_RESULT([const_xattr_handler], [
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AC_MSG_RESULT([yes])
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],[
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ZFS_LINUX_TEST_ERROR([const xattr_handler])
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])
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])
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dnl #
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dnl # 4.5 API change,
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dnl # struct xattr_handler added new member "name".
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dnl # xattr_handler which matches to whole name rather than prefix should use
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dnl # "name" instead of "prefix", e.g. "system.posix_acl_access"
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_NAME], [
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ZFS_LINUX_TEST_SRC([xattr_handler_name], [
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#include <linux/xattr.h>
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.name = XATTR_NAME_POSIX_ACL_ACCESS,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_NAME], [
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AC_MSG_CHECKING([whether xattr_handler has name])
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ZFS_LINUX_TEST_RESULT([xattr_handler_name], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1,
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[xattr_handler has name])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Supported xattr handler get() interfaces checked newest to oldest.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET], [
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ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry_inode], [
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#include <linux/xattr.h>
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int get(const struct xattr_handler *handler,
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struct dentry *dentry, struct inode *inode,
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const char *name, void *buffer, size_t size) { return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.get = get,
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};
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],[])
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ZFS_LINUX_TEST_SRC([xattr_handler_get_xattr_handler], [
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#include <linux/xattr.h>
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int get(const struct xattr_handler *handler,
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struct dentry *dentry, const char *name,
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void *buffer, size_t size) { return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.get = get,
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};
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],[])
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ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry], [
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#include <linux/xattr.h>
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int get(struct dentry *dentry, const char *name,
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void *buffer, size_t size, int handler_flags)
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{ return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.get = get,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_GET], [
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dnl #
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dnl # 4.7 API change,
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dnl # The xattr_handler->get() callback was changed to take both
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dnl # dentry and inode.
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dnl #
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AC_MSG_CHECKING([whether xattr_handler->get() wants dentry and inode])
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ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry_inode], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_GET_DENTRY_INODE, 1,
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[xattr_handler->get() wants both dentry and inode])
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],[
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dnl #
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dnl # 4.4 API change,
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dnl # The xattr_handler->get() callback was changed to take a
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dnl # attr_handler, and handler_flags argument was removed and
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dnl # should be accessed by handler->flags.
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dnl #
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(
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[whether xattr_handler->get() wants xattr_handler])
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ZFS_LINUX_TEST_RESULT([xattr_handler_get_xattr_handler], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_GET_HANDLER, 1,
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[xattr_handler->get() wants xattr_handler])
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],[
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dnl #
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dnl # 2.6.33 API change,
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dnl # The xattr_handler->get() callback was changed
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dnl # to take a dentry instead of an inode, and a
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dnl # handler_flags argument was added.
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dnl #
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(
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[whether xattr_handler->get() wants dentry])
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ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_GET_DENTRY, 1,
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[xattr_handler->get() wants dentry])
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],[
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ZFS_LINUX_TEST_ERROR([xattr get()])
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])
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])
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])
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])
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dnl #
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dnl # Supported xattr handler set() interfaces checked newest to oldest.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET], [
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ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry_inode], [
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#include <linux/xattr.h>
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int set(const struct xattr_handler *handler,
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struct dentry *dentry, struct inode *inode,
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const char *name, const void *buffer,
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size_t size, int flags)
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{ return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.set = set,
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};
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],[])
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ZFS_LINUX_TEST_SRC([xattr_handler_set_xattr_handler], [
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#include <linux/xattr.h>
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int set(const struct xattr_handler *handler,
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struct dentry *dentry, const char *name,
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const void *buffer, size_t size, int flags)
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{ return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.set = set,
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};
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],[])
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ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry], [
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#include <linux/xattr.h>
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int set(struct dentry *dentry, const char *name,
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const void *buffer, size_t size, int flags,
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int handler_flags) { return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.set = set,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_SET], [
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dnl #
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dnl # 4.7 API change,
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dnl # The xattr_handler->set() callback was changed to take both
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dnl # dentry and inode.
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dnl #
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AC_MSG_CHECKING([whether xattr_handler->set() wants dentry and inode])
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ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry_inode], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_SET_DENTRY_INODE, 1,
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[xattr_handler->set() wants both dentry and inode])
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],[
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dnl #
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dnl # 4.4 API change,
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dnl # The xattr_handler->set() callback was changed to take a
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dnl # xattr_handler, and handler_flags argument was removed and
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dnl # should be accessed by handler->flags.
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dnl #
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(
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[whether xattr_handler->set() wants xattr_handler])
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ZFS_LINUX_TEST_RESULT([xattr_handler_set_xattr_handler], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_SET_HANDLER, 1,
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[xattr_handler->set() wants xattr_handler])
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],[
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dnl #
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dnl # 2.6.33 API change,
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dnl # The xattr_handler->set() callback was changed
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dnl # to take a dentry instead of an inode, and a
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dnl # handler_flags argument was added.
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dnl #
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(
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[whether xattr_handler->set() wants dentry])
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ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_SET_DENTRY, 1,
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[xattr_handler->set() wants dentry])
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],[
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ZFS_LINUX_TEST_ERROR([xattr set()])
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])
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])
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])
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])
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dnl #
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dnl # Supported xattr handler list() interfaces checked newest to oldest.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST], [
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ZFS_LINUX_TEST_SRC([xattr_handler_list_simple], [
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#include <linux/xattr.h>
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bool list(struct dentry *dentry) { return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.list = list,
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};
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],[])
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ZFS_LINUX_TEST_SRC([xattr_handler_list_xattr_handler], [
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#include <linux/xattr.h>
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size_t list(const struct xattr_handler *handler,
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struct dentry *dentry, char *list, size_t list_size,
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const char *name, size_t name_len) { return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.list = list,
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};
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],[])
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ZFS_LINUX_TEST_SRC([xattr_handler_list_dentry], [
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#include <linux/xattr.h>
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size_t list(struct dentry *dentry,
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char *list, size_t list_size,
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const char *name, size_t name_len,
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int handler_flags) { return 0; }
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static const struct xattr_handler
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xops __attribute__ ((unused)) = {
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.list = list,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_LIST], [
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dnl # 4.5 API change,
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dnl # The xattr_handler->list() callback was changed to take only a
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dnl # dentry and it only needs to return if it's accessible.
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AC_MSG_CHECKING([whether xattr_handler->list() wants simple])
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ZFS_LINUX_TEST_RESULT([xattr_handler_list_simple], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_LIST_SIMPLE, 1,
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[xattr_handler->list() wants simple])
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],[
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dnl #
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dnl # 4.4 API change,
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dnl # The xattr_handler->list() callback was changed to take a
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dnl # xattr_handler, and handler_flags argument was removed
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dnl # and should be accessed by handler->flags.
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dnl #
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(
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[whether xattr_handler->list() wants xattr_handler])
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ZFS_LINUX_TEST_RESULT([xattr_handler_list_xattr_handler], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_LIST_HANDLER, 1,
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[xattr_handler->list() wants xattr_handler])
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],[
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dnl #
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dnl # 2.6.33 API change,
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dnl # The xattr_handler->list() callback was changed
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dnl # to take a dentry instead of an inode, and a
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dnl # handler_flags argument was added.
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dnl #
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING(
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[whether xattr_handler->list() wants dentry])
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ZFS_LINUX_TEST_RESULT([xattr_handler_list_dentry], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_XATTR_LIST_DENTRY, 1,
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[xattr_handler->list() wants dentry])
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],[
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ZFS_LINUX_TEST_ERROR([xattr list()])
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])
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])
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])
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])
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dnl #
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dnl # 3.7 API change,
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dnl # The posix_acl_{from,to}_xattr functions gained a new
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dnl # parameter: user_ns
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS], [
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ZFS_LINUX_TEST_SRC([posix_acl_from_xattr_userns], [
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#include <linux/cred.h>
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#include <linux/fs.h>
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#include <linux/posix_acl_xattr.h>
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],[
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posix_acl_from_xattr(&init_user_ns, NULL, 0);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS], [
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AC_MSG_CHECKING([whether posix_acl_from_xattr() needs user_ns])
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ZFS_LINUX_TEST_RESULT([posix_acl_from_xattr_userns], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_POSIX_ACL_FROM_XATTR_USERNS, 1,
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[posix_acl_from_xattr() needs user_ns])
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],[
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ZFS_LINUX_TEST_ERROR([posix_acl_from_xattr()])
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])
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])
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dnl #
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dnl # 4.9 API change,
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dnl # iops->{set,get,remove}xattr and generic_{set,get,remove}xattr are
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dnl # removed. xattr operations will directly go through sb->s_xattr.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR], [
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ZFS_LINUX_TEST_SRC([have_generic_setxattr], [
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#include <linux/fs.h>
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#include <linux/xattr.h>
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.setxattr = generic_setxattr
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_GENERIC_SETXATTR], [
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AC_MSG_CHECKING([whether generic_setxattr() exists])
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ZFS_LINUX_TEST_RESULT([have_generic_setxattr], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_GENERIC_SETXATTR, 1,
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[generic_setxattr() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR], [
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ZFS_AC_KERNEL_SRC_CONST_XATTR_HANDLER
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ZFS_AC_KERNEL_SRC_XATTR_HANDLER_NAME
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ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET
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ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET
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ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST
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ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS
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ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR
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])
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AC_DEFUN([ZFS_AC_KERNEL_XATTR], [
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ZFS_AC_KERNEL_CONST_XATTR_HANDLER
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ZFS_AC_KERNEL_XATTR_HANDLER_NAME
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ZFS_AC_KERNEL_XATTR_HANDLER_GET
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ZFS_AC_KERNEL_XATTR_HANDLER_SET
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ZFS_AC_KERNEL_XATTR_HANDLER_LIST
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ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS
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ZFS_AC_KERNEL_GENERIC_SETXATTR
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])
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