Mark deprecated functions using the deprecated attribute

nitrokey-sys currently contains two deprecated functions: `NK_status`
and `NK_totp_get_time`.  This patch adds Rust’s `deprecated` attribute
to the functions.

2 files changed, 3 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5bf152..feca334 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,5 @@
 # Unreleased
+- Mark deprecated functions using the `deprecated` attribute.
 - Update to libnitrokey 3.5, causing all following changes.
 - New constant `NK_PWS_SLOT_COUNT`.
 - New structures:
diff --git a/src/ffi.rs b/src/ffi.rs
index d003cf1..a01eae8 100644
--- a/src/ffi.rs
+++ b/src/ffi.rs
@@ -759,6 +759,7 @@ extern "C" {
     /// deprecated in favor of NK_get_status_as_string.
     /// @return string representation of the status or an empty string
     /// if the command failed
+    #[deprecated(since = "3.5.0", note="use `NK_get_status_as_string` instead")]
     pub fn NK_status() -> *mut ::std::os::raw::c_char;
 }
 extern "C" {
@@ -1013,6 +1014,7 @@ extern "C" {
     pub fn NK_totp_set_time_soft(time: u64) -> ::std::os::raw::c_int;
 }
 extern "C" {
+    #[deprecated(since = "3.4.0", note="use `NK_totp_set_time_soft` instead")]
     pub fn NK_totp_get_time() -> ::std::os::raw::c_int;
 }
 extern "C" {