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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-setattr-prepare.m4
+33 -11
View File
@@ -27,26 +27,48 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SETATTR_PREPARE], [
int error __attribute__ ((unused)) =
setattr_prepare(userns, dentry, attr);
])
dnl #
dnl # 6.3 API change
dnl # The first arg of setattr_prepare() is changed to struct mnt_idmap*
dnl #
ZFS_LINUX_TEST_SRC([setattr_prepare_mnt_idmap], [
#include <linux/fs.h>
], [
struct dentry *dentry = NULL;
struct iattr *attr = NULL;
struct mnt_idmap *idmap = NULL;
int error __attribute__ ((unused)) =
setattr_prepare(idmap, dentry, attr);
])
])
AC_DEFUN([ZFS_AC_KERNEL_SETATTR_PREPARE], [
AC_MSG_CHECKING([whether setattr_prepare() is available and accepts struct user_namespace*])
ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare_userns],
AC_MSG_CHECKING([whether setattr_prepare() is available and accepts struct mnt_idmap*])
ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare_mnt_idmap],
[setattr_prepare], [fs/attr.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SETATTR_PREPARE_USERNS, 1,
[setattr_prepare() accepts user_namespace])
AC_DEFINE(HAVE_SETATTR_PREPARE_IDMAP, 1,
[setattr_prepare() accepts mnt_idmap])
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether setattr_prepare() is available, doesn't accept user_namespace])
ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare],
[setattr_prepare], [fs/attr.c], [
AC_MSG_CHECKING([whether setattr_prepare() is available and accepts struct user_namespace*])
ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare_userns],
[setattr_prepare], [fs/attr.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SETATTR_PREPARE_NO_USERNS, 1,
[setattr_prepare() is available, doesn't accept user_namespace])
AC_DEFINE(HAVE_SETATTR_PREPARE_USERNS, 1,
[setattr_prepare() accepts user_namespace])
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether setattr_prepare() is available, doesn't accept user_namespace])
ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare],
[setattr_prepare], [fs/attr.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SETATTR_PREPARE_NO_USERNS, 1,
[setattr_prepare() is available, doesn't accept user_namespace])
], [
AC_MSG_RESULT(no)
])
])
])
])