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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
95 lines
2.6 KiB
Plaintext
95 lines
2.6 KiB
Plaintext
dnl #
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dnl # Supported mkdir() interfaces checked newest to oldest.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_MKDIR], [
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dnl #
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dnl # 6.3 API change
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dnl # mkdir() takes struct mnt_idmap * as the first arg
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dnl #
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ZFS_LINUX_TEST_SRC([mkdir_mnt_idmap], [
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#include <linux/fs.h>
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int mkdir(struct mnt_idmap *idmap,
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struct inode *inode, struct dentry *dentry,
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umode_t umode) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.mkdir = mkdir,
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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 # The struct user_namespace arg was added as the first argument to
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dnl # mkdir()
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dnl #
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ZFS_LINUX_TEST_SRC([mkdir_user_namespace], [
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#include <linux/fs.h>
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int mkdir(struct user_namespace *userns,
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struct inode *inode, struct dentry *dentry,
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umode_t umode) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.mkdir = mkdir,
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};
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],[])
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dnl #
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dnl # 3.3 API change
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dnl # The VFS .create, .mkdir and .mknod callbacks were updated to take a
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dnl # umode_t type rather than an int. The expectation is that any backport
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dnl # would also change all three prototypes. However, if it turns out that
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dnl # some distribution doesn't backport the whole thing this could be
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dnl # broken apart into three separate checks.
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dnl #
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ZFS_LINUX_TEST_SRC([inode_operations_mkdir], [
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#include <linux/fs.h>
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int mkdir(struct inode *inode, struct dentry *dentry,
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umode_t umode) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.mkdir = mkdir,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_MKDIR], [
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dnl #
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dnl # 6.3 API change
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dnl # mkdir() takes struct mnt_idmap * as the first arg
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dnl #
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AC_MSG_CHECKING([whether iops->mkdir() takes struct mnt_idmap*])
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ZFS_LINUX_TEST_RESULT([mkdir_mnt_idmap], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_IOPS_MKDIR_IDMAP, 1,
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[iops->mkdir() takes struct mnt_idmap*])
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],[
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dnl #
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dnl # 5.12 API change
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dnl # The struct user_namespace arg was added as the first argument to
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dnl # mkdir() of the iops structure.
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dnl #
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AC_MSG_CHECKING([whether iops->mkdir() takes struct user_namespace*])
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ZFS_LINUX_TEST_RESULT([mkdir_user_namespace], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_IOPS_MKDIR_USERNS, 1,
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[iops->mkdir() 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->mkdir() takes umode_t])
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ZFS_LINUX_TEST_RESULT([inode_operations_mkdir], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_MKDIR_UMODE_T, 1,
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[iops->mkdir() takes umode_t])
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],[
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ZFS_LINUX_TEST_ERROR([mkdir()])
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])
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])
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])
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])
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