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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-symlink.m4
+28 -5
View File
@@ -1,4 +1,20 @@
AC_DEFUN([ZFS_AC_KERNEL_SRC_SYMLINK], [
dnl #
dnl # 6.3 API change that changed the first arg
dnl # to struct mnt_idmap*
dnl #
ZFS_LINUX_TEST_SRC([symlink_mnt_idmap], [
#include <linux/fs.h>
#include <linux/sched.h>
int tmp_symlink(struct mnt_idmap *idmap,
struct inode *inode ,struct dentry *dentry,
const char *path) { return 0; }
static const struct inode_operations
iops __attribute__ ((unused)) = {
.symlink = tmp_symlink,
};
],[])
dnl #
dnl # 5.12 API change that added the struct user_namespace* arg
dnl # to the front of this function type's arg list.
@@ -19,12 +35,19 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SYMLINK], [
])
AC_DEFUN([ZFS_AC_KERNEL_SYMLINK], [
AC_MSG_CHECKING([whether iops->symlink() takes struct user_namespace*])
ZFS_LINUX_TEST_RESULT([symlink_userns], [
AC_MSG_CHECKING([whether iops->symlink() takes struct mnt_idmap*])
ZFS_LINUX_TEST_RESULT([symlink_mnt_idmap], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_IOPS_SYMLINK_USERNS, 1,
[iops->symlink() takes struct user_namespace*])
AC_DEFINE(HAVE_IOPS_SYMLINK_IDMAP, 1,
[iops->symlink() takes struct mnt_idmap*])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether iops->symlink() takes struct user_namespace*])
ZFS_LINUX_TEST_RESULT([symlink_userns], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_IOPS_SYMLINK_USERNS, 1,
[iops->symlink() takes struct user_namespace*])
],[
AC_MSG_RESULT(no)
])
])
])