From 2e42d32407165f437549abddd319f8feab0051d6 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sun, 5 Oct 2025 19:13:44 -0400
Subject: kern: os: Add copyinstr()

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/include/os/systm.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/sys/include/os')

diff --git a/src/sys/include/os/systm.h b/src/sys/include/os/systm.h
index 33de08a..24f21db 100644
--- a/src/sys/include/os/systm.h
+++ b/src/sys/include/os/systm.h
@@ -32,6 +32,18 @@
 
 #include <sys/types.h>
 
+/*
+ * Copy userland string to kernel space safely
+ *
+ * @uaddr: Userspace source address to copy from
+ * @kaddr: Kernel address dest address to copy to
+ * @len: Length of buffer
+ *
+ * Returns 0 on success, otherwise a less than zero value
+ * on failure.
+ */
+int copyinstr(const void *uaddr, char *kaddr, size_t len);
+
 /*
  * Copy userland data to kernel space safely
  *
-- 
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