kern: systm: Add copyoutstr()

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/sys/include/os/systm.h b/src/sys/include/os/systm.h
index 24f21db..4cb526e 100644
--- a/src/sys/include/os/systm.h
+++ b/src/sys/include/os/systm.h
@@ -68,4 +68,16 @@ int copyin(const void *uaddr, void *kaddr, size_t len);
  */
 int copyout(const void *kaddr, void *uaddr, size_t len);
 
+/*
+ * Copy kernel string to userland safely
+ *
+ * @kaddr: Kernel space address to copy from
+ * @uaddr: User space address to copy to
+ * @len: Length of bytes to copy
+ *
+ * Returns zero on success, otherwise a less than
+ * zero value.
+ */
+int copyoutstr(const void *kaddr, void *addr, size_t len);
+
 #endif  /* !_OS_SYSTM_H_ */