From 80bd797737440239c13a7e01698dd0c518eb0ad3 Mon Sep 17 00:00:00 2001
From: backslashxx <118538522+backslashxx@users.noreply.github.com>
Date: Fri, 13 Jun 2025 18:53:15 +0800
Subject: [PATCH] kernel: ksud: remove remove read_iter requirement

nothing uses this on old kernels, so even backporting this to file_operations
is not really needed

https://elixir.bootlin.com/linux/v3.16.85/source/include/linux/fs.h#L1487

Signed-off-by: backslashxx <118538522+backslashxx@users.noreply.github.com>
---
 kernel/ksud.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/ksud.c b/kernel/ksud.c
index 113bf24c..ae336a13 100644
--- a/kernel/ksud.c
+++ b/kernel/ksud.c
@@ -396,10 +396,12 @@ int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
 	if (orig_read) {
 		fops_proxy.read = read_proxy;
 	}
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 16, 0) 
 	orig_read_iter = file->f_op->read_iter;
 	if (orig_read_iter) {
 		fops_proxy.read_iter = read_iter_proxy;
 	}
+#endif
 	// replace the file_operations
 	file->f_op = &fops_proxy;
 	read_count_append = rc_count;