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f0aca5f7bb
Linux kernel 6.3 changed a bunch of APIs to use the dedicated idmap type for mounts (struct mnt_idmap), we need to detect these changes and make zfs work with the new APIs. NOTE: This backport only includes the configure checks to detect the 6.3 idmap API changes. It does not include support for idmap. When provided the idmap variable is ignored in most case in the same way the user_ns argument was ignored. This change is solely to provide compatibility with the new interfaces. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Youzhong Yang <yyang@mathworks.com> Closes #14682
88 lines
2.1 KiB
Plaintext
88 lines
2.1 KiB
Plaintext
AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_SETATTR], [
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dnl #
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dnl # Linux 6.3 API
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dnl # The first arg of setattr I/O operations handler type
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dnl # is changed to struct mnt_idmap*
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_setattr_mnt_idmap], [
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#include <linux/fs.h>
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int test_setattr(
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struct mnt_idmap *idmap,
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struct dentry *de, struct iattr *ia)
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{ return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.setattr = test_setattr,
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};
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],[])
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dnl #
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dnl # Linux 5.12 API
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dnl # The setattr I/O operations handler type was extended to require
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dnl # a struct user_namespace* as its first arg, to support idmapped
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dnl # mounts.
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_setattr_userns], [
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#include <linux/fs.h>
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int test_setattr(
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struct user_namespace *userns,
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struct dentry *de, struct iattr *ia)
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{ return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.setattr = test_setattr,
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};
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],[])
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ZFS_LINUX_TEST_SRC([inode_operations_setattr], [
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#include <linux/fs.h>
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int test_setattr(
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struct dentry *de, struct iattr *ia)
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{ return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.setattr = test_setattr,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_INODE_SETATTR], [
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dnl #
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dnl # Kernel 6.3 test
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dnl #
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AC_MSG_CHECKING([whether iops->setattr() takes mnt_idmap])
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ZFS_LINUX_TEST_RESULT([inode_operations_setattr_mnt_idmap], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_IDMAP_IOPS_SETATTR, 1,
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[iops->setattr() takes struct mnt_idmap*])
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],[
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AC_MSG_RESULT(no)
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dnl #
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dnl # Kernel 5.12 test
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dnl #
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AC_MSG_CHECKING([whether iops->setattr() takes user_namespace])
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ZFS_LINUX_TEST_RESULT([inode_operations_setattr_userns], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_USERNS_IOPS_SETATTR, 1,
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[iops->setattr() takes struct user_namespace*])
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],[
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING([whether iops->setattr() exists])
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ZFS_LINUX_TEST_RESULT([inode_operations_setattr], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_IOPS_SETATTR, 1,
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[iops->setattr() 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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])
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])
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