From 4a089fcfe4faf0e9cc08cd4fce04ba307047754d Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Wed, 15 Oct 2025 12:05:37 -0400
Subject: kern: vfs: Add NULL check for write vop

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/os/vfs_subr.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/sys/os/vfs_subr.c')

diff --git a/src/sys/os/vfs_subr.c b/src/sys/os/vfs_subr.c
index b82b683..8d5b032 100644
--- a/src/sys/os/vfs_subr.c
+++ b/src/sys/os/vfs_subr.c
@@ -163,6 +163,10 @@ vop_write(struct vnode *vp, char *data, size_t len)
         return -EIO;
     }
 
+    if (vops->write == NULL) {
+        return -ENOTSUP;
+    }
+
     rwdata.data = data;
     rwdata.len = len;
     rwdata.vp = vp;
-- 
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