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Add xattr_handler support for Android kernels

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Some ARM BSPs run the Android kernel, which has
a modified xattr_handler->get() function signature.
This adds support to compile against these kernels.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Walter Huf <hufman@gmail.com>
Closes #13824
This commit is contained in:
Walter Huf
2022-09-06 10:02:18 -07:00
committed by Tony Hutter
parent aa9e887d2a
commit 2010c183bc
2 changed files with 42 additions and 1 deletions
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config/kernel-xattr-handler.m4
+28 -1
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@@ -100,6 +100,19 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET], [
.get = get,
};
],[])
ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry_inode_flags], [
#include <linux/xattr.h>
int get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
const char *name, void *buffer,
size_t size, int flags) { return 0; }
static const struct xattr_handler
xops __attribute__ ((unused)) = {
.get = get,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_GET], [
@@ -142,7 +155,21 @@ AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_GET], [
AC_DEFINE(HAVE_XATTR_GET_DENTRY, 1,
[xattr_handler->get() wants dentry])
],[
ZFS_LINUX_TEST_ERROR([xattr get()])
dnl #
dnl # Android API change,
dnl # The xattr_handler->get() callback was
dnl # changed to take dentry, inode and flags.
dnl #
AC_MSG_RESULT(no)
AC_MSG_CHECKING(
[whether xattr_handler->get() wants dentry and inode and flags])
ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry_inode_flags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_XATTR_GET_DENTRY_INODE_FLAGS, 1,
[xattr_handler->get() wants dentry and inode and flags])
],[
ZFS_LINUX_TEST_ERROR([xattr get()])
])
])
])
])