kernel-is_owner_or_cap.m4

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    1 dnl #
    2 dnl # 2.6.39 API change,
    3 dnl # The is_owner_or_cap() macro was renamed to inode_owner_or_capable(),
    4 dnl # This is used for permission checks in the xattr and file attribute call
    5 dnl # paths.
    6 dnl #
    7 dnl # 5.12 API change,
    8 dnl # inode_owner_or_capable() now takes struct user_namespace *
    9 dnl # to support idmapped mounts
   10 dnl #
   11 AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OWNER_OR_CAPABLE], [
   12         ZFS_LINUX_TEST_SRC([inode_owner_or_capable], [
   13                 #include <linux/fs.h>
   14         ],[
   15                 struct inode *ip = NULL;
   16                 (void) inode_owner_or_capable(ip);
   17         ])
   18 
   19         ZFS_LINUX_TEST_SRC([inode_owner_or_capable_idmapped], [
   20                 #include <linux/fs.h>
   21         ],[
   22                 struct inode *ip = NULL;
   23                 (void) inode_owner_or_capable(&init_user_ns, ip);
   24         ])
   25 ])
   26 
   27 AC_DEFUN([ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE], [
   28         AC_MSG_CHECKING([whether inode_owner_or_capable() exists])
   29         ZFS_LINUX_TEST_RESULT([inode_owner_or_capable], [
   30                 AC_MSG_RESULT(yes)
   31                 AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
   32                     [inode_owner_or_capable() exists])
   33         ], [
   34                 AC_MSG_RESULT(no)
   35 
   36                 AC_MSG_CHECKING(
   37                     [whether inode_owner_or_capable() takes user_ns])
   38                 ZFS_LINUX_TEST_RESULT([inode_owner_or_capable_idmapped], [
   39                         AC_MSG_RESULT(yes)
   40                         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE_IDMAPPED, 1,
   41                             [inode_owner_or_capable() takes user_ns])
   42                 ],[
   43                         ZFS_LINUX_TEST_ERROR([capability])
   44                 ])
   45         ])
   46 ])

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/config/kernel-is_owner_or_cap.m4

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel-is_owner_or_cap.m4