config/kernel-inode-getattr.m4

   1 AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_GETATTR], [
   2         dnl #
   3         dnl # Linux 5.12 API
   4         dnl # The getattr I/O operations handler type was extended to require
   5         dnl # a struct user_namespace* as its first arg, to support idmapped
   6         dnl # mounts.
   7         dnl #
   8         ZFS_LINUX_TEST_SRC([inode_operations_getattr_userns], [
   9                 #include <linux/fs.h>
  10
  11                 int test_getattr(
  12                         struct user_namespace *userns,
  13                     const struct path *p, struct kstat *k,
  14                     u32 request_mask, unsigned int query_flags)
  15                     { return 0; }
  16
  17                 static const struct inode_operations
  18                     iops __attribute__ ((unused)) = {
  19                         .getattr = test_getattr,
  20                 };
  21         ],[])
  22
  23         dnl #
  24         dnl # Linux 4.11 API
  25         dnl # See torvalds/linux@a528d35
  26         dnl #
  27         ZFS_LINUX_TEST_SRC([inode_operations_getattr_path], [
  28                 #include <linux/fs.h>
  29
  30                 int test_getattr(
  31                     const struct path *p, struct kstat *k,
  32                     u32 request_mask, unsigned int query_flags)
  33                     { return 0; }
  34
  35                 static const struct inode_operations
  36                     iops __attribute__ ((unused)) = {
  37                         .getattr = test_getattr,
  38                 };
  39         ],[])
  40
  41         ZFS_LINUX_TEST_SRC([inode_operations_getattr_vfsmount], [
  42                 #include <linux/fs.h>
  43
  44                 int test_getattr(
  45                     struct vfsmount *mnt, struct dentry *d,
  46                     struct kstat *k)
  47                     { return 0; }
  48
  49                 static const struct inode_operations
  50                     iops __attribute__ ((unused)) = {
  51                         .getattr = test_getattr,
  52                 };
  53         ],[])
  54 ])
  55
  56 AC_DEFUN([ZFS_AC_KERNEL_INODE_GETATTR], [
  57         dnl #
  58         dnl # Kernel 5.12 test
  59         dnl #
  60         AC_MSG_CHECKING([whether iops->getattr() takes user_namespace])
  61         ZFS_LINUX_TEST_RESULT([inode_operations_getattr_userns], [
  62                 AC_MSG_RESULT(yes)
  63                 AC_DEFINE(HAVE_USERNS_IOPS_GETATTR, 1,
  64                     [iops->getattr() takes struct user_namespace*])
  65         ],[
  66                 AC_MSG_RESULT(no)
  67
  68                 dnl #
  69                 dnl # Kernel 4.11 test
  70                 dnl #
  71                 AC_MSG_CHECKING([whether iops->getattr() takes a path])
  72                 ZFS_LINUX_TEST_RESULT([inode_operations_getattr_path], [
  73                         AC_MSG_RESULT(yes)
  74                         AC_DEFINE(HAVE_PATH_IOPS_GETATTR, 1,
  75                                 [iops->getattr() takes a path])
  76                 ],[
  77                         AC_MSG_RESULT(no)
  78
  79                         dnl #
  80                         dnl # Kernel < 4.11 test
  81                         dnl #
  82                         AC_MSG_CHECKING([whether iops->getattr() takes a vfsmount])
  83                         ZFS_LINUX_TEST_RESULT([inode_operations_getattr_vfsmount], [
  84                                 AC_MSG_RESULT(yes)
  85                                 AC_DEFINE(HAVE_VFSMOUNT_IOPS_GETATTR, 1,
  86                                         [iops->getattr() takes a vfsmount])
  87                         ],[
  88                                 AC_MSG_RESULT(no)
  89                         ])
  90                 ])
  91         ])
  92 ])