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Linux 6.3 compat: idmapped mount API changes

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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.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Youzhong Yang <yyang@mathworks.com>
Closes #14682
This commit is contained in:
youzhongyang
2023-04-10 17:15:36 -04:00
committed by GitHub
parent d0cbd9feaf
commit d4dc53dad2
40 changed files with 823 additions and 296 deletions
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config/kernel-rename.m4
+39 -17
View File
@@ -71,39 +71,61 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
.rename = rename_fn,
};
],[])
dnl #
dnl # 6.3 API change - the first arg is now struct mnt_idmap*
dnl #
ZFS_LINUX_TEST_SRC([inode_operations_rename_mnt_idmap], [
#include <linux/fs.h>
int rename_fn(struct mnt_idmap *idmap, struct inode *sip,
struct dentry *sdp, struct inode *tip, struct dentry *tdp,
unsigned int flags) { return 0; }
static const struct inode_operations
iops __attribute__ ((unused)) = {
.rename = rename_fn,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_RENAME], [
AC_MSG_CHECKING([whether iops->rename() takes struct user_namespace*])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_userns], [
AC_MSG_CHECKING([whether iops->rename() takes struct mnt_idmap*])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_mnt_idmap], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_IOPS_RENAME_USERNS, 1,
[iops->rename() takes struct user_namespace*])
AC_DEFINE(HAVE_IOPS_RENAME_IDMAP, 1,
[iops->rename() takes struct mnt_idmap*])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether iops->rename2() exists])
ZFS_LINUX_TEST_RESULT([inode_operations_rename2], [
AC_MSG_CHECKING([whether iops->rename() takes struct user_namespace*])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_userns], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RENAME2, 1, [iops->rename2() exists])
AC_DEFINE(HAVE_IOPS_RENAME_USERNS, 1,
[iops->rename() takes struct user_namespace*])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether iops->rename() wants flags])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_flags], [
AC_MSG_CHECKING([whether iops->rename2() exists])
ZFS_LINUX_TEST_RESULT([inode_operations_rename2], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RENAME_WANTS_FLAGS, 1,
[iops->rename() wants flags])
AC_DEFINE(HAVE_RENAME2, 1, [iops->rename2() exists])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether struct inode_operations_wrapper takes .rename2()])
ZFS_LINUX_TEST_RESULT([dir_inode_operations_wrapper_rename2], [
AC_MSG_CHECKING([whether iops->rename() wants flags])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_flags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RENAME2_OPERATIONS_WRAPPER, 1,
[struct inode_operations_wrapper takes .rename2()])
AC_DEFINE(HAVE_RENAME_WANTS_FLAGS, 1,
[iops->rename() wants flags])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether struct inode_operations_wrapper takes .rename2()])
ZFS_LINUX_TEST_RESULT([dir_inode_operations_wrapper_rename2], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RENAME2_OPERATIONS_WRAPPER, 1,
[struct inode_operations_wrapper takes .rename2()])
],[
AC_MSG_RESULT(no)
])
])
])
])