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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
87 lines
2.7 KiB
Plaintext
87 lines
2.7 KiB
Plaintext
dnl #
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dnl # 3.11 API change
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dnl # Add support for i_op->tmpfile
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_TMPFILE], [
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dnl #
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dnl # 6.3 API change
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dnl # The first arg is now struct mnt_idmap *
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_tmpfile_mnt_idmap], [
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#include <linux/fs.h>
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int tmpfile(struct mnt_idmap *idmap,
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struct inode *inode, struct file *file,
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umode_t mode) { return 0; }
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static struct inode_operations
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iops __attribute__ ((unused)) = {
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.tmpfile = tmpfile,
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};
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],[])
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dnl # 6.1 API change
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dnl # use struct file instead of struct dentry
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_tmpfile], [
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#include <linux/fs.h>
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int tmpfile(struct user_namespace *userns,
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struct inode *inode, struct file *file,
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umode_t mode) { return 0; }
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static struct inode_operations
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iops __attribute__ ((unused)) = {
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.tmpfile = tmpfile,
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};
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],[])
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dnl #
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dnl # 5.11 API change
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dnl # add support for userns parameter to tmpfile
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_tmpfile_dentry_userns], [
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#include <linux/fs.h>
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int tmpfile(struct user_namespace *userns,
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struct inode *inode, struct dentry *dentry,
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umode_t mode) { return 0; }
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static struct inode_operations
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iops __attribute__ ((unused)) = {
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.tmpfile = tmpfile,
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};
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],[])
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ZFS_LINUX_TEST_SRC([inode_operations_tmpfile_dentry], [
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#include <linux/fs.h>
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int tmpfile(struct inode *inode, struct dentry *dentry,
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umode_t mode) { return 0; }
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static struct inode_operations
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iops __attribute__ ((unused)) = {
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.tmpfile = tmpfile,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_TMPFILE], [
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AC_MSG_CHECKING([whether i_op->tmpfile() exists])
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ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_mnt_idmap], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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AC_DEFINE(HAVE_TMPFILE_IDMAP, 1, [i_op->tmpfile() has mnt_idmap])
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], [
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ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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AC_DEFINE(HAVE_TMPFILE_USERNS, 1, [i_op->tmpfile() has userns])
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],[
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ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry_userns], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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AC_DEFINE(HAVE_TMPFILE_USERNS, 1, [i_op->tmpfile() has userns])
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AC_DEFINE(HAVE_TMPFILE_DENTRY, 1, [i_op->tmpfile() uses old dentry signature])
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],[
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ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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AC_DEFINE(HAVE_TMPFILE_DENTRY, 1, [i_op->tmpfile() uses old dentry signature])
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],[
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ZFS_LINUX_REQUIRE_API([i_op->tmpfile()], [3.11])
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])
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])
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])
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])
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])
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