config/kernel-mknod.m4

   1 AC_DEFUN([ZFS_AC_KERNEL_SRC_MKNOD], [
   2         dnl #
   3         dnl # 6.3 API change
   4         dnl # The first arg is now struct mnt_idmap*
   5         dnl #
   6         ZFS_LINUX_TEST_SRC([mknod_mnt_idmap], [
   7                 #include <linux/fs.h>
   8                 #include <linux/sched.h>
   9
  10                 static int tmp_mknod(struct mnt_idmap *idmap,
  11                     struct inode *inode ,struct dentry *dentry,
  12                     umode_t u, dev_t d) { return 0; }
  13
  14                 static const struct inode_operations
  15                         iops __attribute__ ((unused)) = {
  16                         .mknod          = tmp_mknod,
  17                 };
  18         ],[])
  19
  20         dnl #
  21         dnl # 5.12 API change that added the struct user_namespace* arg
  22         dnl # to the front of this function type's arg list.
  23         dnl #
  24         ZFS_LINUX_TEST_SRC([mknod_userns], [
  25                 #include <linux/fs.h>
  26                 #include <linux/sched.h>
  27
  28                 static int tmp_mknod(struct user_namespace *userns,
  29                     struct inode *inode ,struct dentry *dentry,
  30                     umode_t u, dev_t d) { return 0; }
  31
  32                 static const struct inode_operations
  33                         iops __attribute__ ((unused)) = {
  34                         .mknod          = tmp_mknod,
  35                 };
  36         ],[])
  37 ])
  38
  39 AC_DEFUN([ZFS_AC_KERNEL_MKNOD], [
  40         AC_MSG_CHECKING([whether iops->mknod() takes struct mnt_idmap*])
  41         ZFS_LINUX_TEST_RESULT([mknod_mnt_idmap], [
  42                 AC_MSG_RESULT(yes)
  43                 AC_DEFINE(HAVE_IOPS_MKNOD_IDMAP, 1,
  44                     [iops->mknod() takes struct mnt_idmap*])
  45         ],[
  46                 AC_MSG_RESULT(no)
  47                 AC_MSG_CHECKING([whether iops->mknod() takes struct user_namespace*])
  48                 ZFS_LINUX_TEST_RESULT([mknod_userns], [
  49                         AC_MSG_RESULT(yes)
  50                         AC_DEFINE(HAVE_IOPS_MKNOD_USERNS, 1,
  51                             [iops->mknod() takes struct user_namespace*])
  52                 ],[
  53                         AC_MSG_RESULT(no)
  54                 ])
  55         ])
  56 ])