config/kernel-set-fs-pwd.m4

   1 dnl #
   2 dnl # 3.9 API change
   3 dnl # set_fs_pwd takes const struct path *
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_SET_FS_PWD_WITH_CONST],
   6         tmp_flags="$EXTRA_KCFLAGS"
   7         EXTRA_KCFLAGS="-Werror"
   8         [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *])
   9         ZFS_LINUX_TRY_COMPILE([
  10                 #include <linux/spinlock.h>
  11                 #include <linux/fs_struct.h>
  12                 #include <linux/path.h>
  13                 void (*const set_fs_pwd_func)
  14                         (struct fs_struct *, const struct path *)
  15                         = set_fs_pwd;
  16         ],[
  17                 return 0;
  18         ],[
  19                 AC_MSG_RESULT(yes)
  20                 AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1,
  21                         [set_fs_pwd() needs const path *])
  22         ],[
  23                 ZFS_LINUX_TRY_COMPILE([
  24                         #include <linux/spinlock.h>
  25                         #include <linux/fs_struct.h>
  26                         #include <linux/path.h>
  27                         void (*const set_fs_pwd_func)
  28                                 (struct fs_struct *, struct path *)
  29                                 = set_fs_pwd;
  30                 ],[
  31                         return 0;
  32                 ],[
  33                         AC_MSG_RESULT(no)
  34                 ],[
  35                         AC_MSG_ERROR(unknown)
  36                 ])
  37         ])
  38         EXTRA_KCFLAGS="$tmp_flags"
  39 ])