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d4dc53dad2
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
134 lines
3.9 KiB
Plaintext
134 lines
3.9 KiB
Plaintext
AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
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dnl #
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dnl # 3.9 (to 4.9) API change,
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dnl #
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dnl # A new version of iops->rename() was added (rename2) that takes a flag
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dnl # argument (to support renameat2). However this separate function was
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dnl # merged back into iops->rename() in Linux 4.9.
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_rename2], [
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#include <linux/fs.h>
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int rename2_fn(struct inode *sip, struct dentry *sdp,
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struct inode *tip, struct dentry *tdp,
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unsigned int flags) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.rename2 = rename2_fn,
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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 #
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dnl # iops->rename2() merged into iops->rename(), and iops->rename() now
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dnl # wants flags.
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_rename_flags], [
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#include <linux/fs.h>
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int rename_fn(struct inode *sip, struct dentry *sdp,
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struct inode *tip, struct dentry *tdp,
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unsigned int flags) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.rename = rename_fn,
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};
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],[])
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dnl #
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dnl # EL7 compatibility
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dnl #
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dnl # EL7 has backported renameat2 support, but it's done by defining a
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dnl # separate iops wrapper structure that takes the .renameat2 function.
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dnl #
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ZFS_LINUX_TEST_SRC([dir_inode_operations_wrapper_rename2], [
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#include <linux/fs.h>
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int rename2_fn(struct inode *sip, struct dentry *sdp,
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struct inode *tip, struct dentry *tdp,
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unsigned int flags) { return 0; }
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static const struct inode_operations_wrapper
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iops __attribute__ ((unused)) = {
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.rename2 = rename2_fn,
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};
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],[])
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dnl #
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dnl # 5.12 API change,
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dnl #
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dnl # Linux 5.12 introduced passing struct user_namespace* as the first
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dnl # argument of the rename() and other inode_operations members.
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_rename_userns], [
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#include <linux/fs.h>
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int rename_fn(struct user_namespace *user_ns, struct inode *sip,
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struct dentry *sdp, struct inode *tip, struct dentry *tdp,
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unsigned int flags) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.rename = rename_fn,
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};
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],[])
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dnl #
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dnl # 6.3 API change - the first arg is now struct mnt_idmap*
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_rename_mnt_idmap], [
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#include <linux/fs.h>
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int rename_fn(struct mnt_idmap *idmap, struct inode *sip,
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struct dentry *sdp, struct inode *tip, struct dentry *tdp,
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unsigned int flags) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.rename = rename_fn,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_RENAME], [
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AC_MSG_CHECKING([whether iops->rename() takes struct mnt_idmap*])
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ZFS_LINUX_TEST_RESULT([inode_operations_rename_mnt_idmap], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_IOPS_RENAME_IDMAP, 1,
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[iops->rename() takes struct mnt_idmap*])
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],[
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AC_MSG_CHECKING([whether iops->rename() takes struct user_namespace*])
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ZFS_LINUX_TEST_RESULT([inode_operations_rename_userns], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_IOPS_RENAME_USERNS, 1,
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[iops->rename() 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->rename2() exists])
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ZFS_LINUX_TEST_RESULT([inode_operations_rename2], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RENAME2, 1, [iops->rename2() exists])
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],[
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING([whether iops->rename() wants flags])
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ZFS_LINUX_TEST_RESULT([inode_operations_rename_flags], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RENAME_WANTS_FLAGS, 1,
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[iops->rename() wants flags])
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],[
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AC_MSG_RESULT(no)
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AC_MSG_CHECKING([whether struct inode_operations_wrapper takes .rename2()])
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ZFS_LINUX_TEST_RESULT([dir_inode_operations_wrapper_rename2], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RENAME2_OPERATIONS_WRAPPER, 1,
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[struct inode_operations_wrapper takes .rename2()])
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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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])
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])
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