76 lines
1.9 KiB
Plaintext
76 lines
1.9 KiB
Plaintext
AC_DEFUN([ZFS_AC_KERNEL_VFS_ITERATE], [
|
|
dnl #
|
|
dnl # 4.7 API change
|
|
dnl #
|
|
AC_MSG_CHECKING([whether fops->iterate_shared() is available])
|
|
ZFS_LINUX_TRY_COMPILE([
|
|
#include <linux/fs.h>
|
|
int iterate(struct file *filp, struct dir_context * context)
|
|
{ return 0; }
|
|
|
|
static const struct file_operations fops
|
|
__attribute__ ((unused)) = {
|
|
.iterate_shared = iterate,
|
|
};
|
|
],[
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_VFS_ITERATE_SHARED, 1,
|
|
[fops->iterate_shared() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
|
|
dnl #
|
|
dnl # 3.11 API change
|
|
dnl #
|
|
dnl # RHEL 7.5 compatibility; the fops.iterate() method was
|
|
dnl # added to the file_operations structure but in order to
|
|
dnl # maintain KABI compatibility all callers must set
|
|
dnl # FMODE_KABI_ITERATE which is checked in iterate_dir().
|
|
dnl # When detected ignore this interface and fallback to
|
|
dnl # to using fops.readdir() to retain KABI compatibility.
|
|
dnl #
|
|
AC_MSG_CHECKING([whether fops->iterate() is available])
|
|
ZFS_LINUX_TRY_COMPILE([
|
|
#include <linux/fs.h>
|
|
int iterate(struct file *filp,
|
|
struct dir_context *context) { return 0; }
|
|
|
|
static const struct file_operations fops
|
|
__attribute__ ((unused)) = {
|
|
.iterate = iterate,
|
|
};
|
|
|
|
#if defined(FMODE_KABI_ITERATE)
|
|
#error "RHEL 7.5, FMODE_KABI_ITERATE interface"
|
|
#endif
|
|
],[
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_VFS_ITERATE, 1,
|
|
[fops->iterate() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
|
|
AC_MSG_CHECKING([whether fops->readdir() is available])
|
|
ZFS_LINUX_TRY_COMPILE([
|
|
#include <linux/fs.h>
|
|
int readdir(struct file *filp, void *entry,
|
|
filldir_t func) { return 0; }
|
|
|
|
static const struct file_operations fops
|
|
__attribute__ ((unused)) = {
|
|
.readdir = readdir,
|
|
};
|
|
],[
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_VFS_READDIR, 1,
|
|
[fops->readdir() is available])
|
|
],[
|
|
AC_MSG_ERROR(no; file a bug report with ZoL)
|
|
])
|
|
])
|
|
])
|
|
])
|