Format Rust sources at 100 columns

shell/ferese-lock/src/auth.rs

@@ -14,7 +14,8 @@ struct Response {
 }
 #[repr(C)]
 struct Conversation {
-    callback: unsafe extern "C" fn(c_int, *mut *const Message, *mut *mut Response, *mut c_void) -> c_int,
+    callback:
+        unsafe extern "C" fn(c_int, *mut *const Message, *mut *mut Response, *mut c_void) -> c_int,
     data: *mut c_void,
 }
 struct Credentials {
@@ -38,7 +39,8 @@ unsafe extern "C" fn converse(
     unsafe {
         *out = std::ptr::null_mut();
         let credentials = &mut *(data as *mut Credentials);
-        let responses = libc::calloc(count as usize, std::mem::size_of::<Response>()) as *mut Response;
+        let responses =
+            libc::calloc(count as usize, std::mem::size_of::<Response>()) as *mut Response;
         if responses.is_null() {
             return CONV_ERR;
         }
@@ -49,11 +51,13 @@ unsafe extern "C" fn converse(
             } else {
                 match (*msg).style {
                     1 => {
-                        credentials.password_prompts = credentials.password_prompts.saturating_add(1);
-                        (credentials.password_prompts == 1).then_some(credentials.password.as_slice())
+                        credentials.password_prompts =
+                            credentials.password_prompts.saturating_add(1);
+                        (credentials.password_prompts == 1)
+                            .then_some(credentials.password.as_slice())
                     } // Never send the password as a second-factor response.
                     2 => Some(credentials.user.as_bytes_with_nul()), // PAM_PROMPT_ECHO_ON
-                    3 | 4 => Some(&[][..]),                          // PAM_ERROR_MSG / PAM_TEXT_INFO
+                    3 | 4 => Some(&[][..]), // PAM_ERROR_MSG / PAM_TEXT_INFO
                     _ => None,
                 }
             };
@@ -61,7 +65,11 @@ unsafe extern "C" fn converse(
                 if !bytes.is_empty() {
                     let allocation = libc::malloc(bytes.len()) as *mut c_char;
                     if !allocation.is_null() {
-                        std::ptr::copy_nonoverlapping(bytes.as_ptr(), allocation.cast(), bytes.len());
+                        std::ptr::copy_nonoverlapping(
+                            bytes.as_ptr(),
+                            allocation.cast(),
+                            bytes.len(),
+                        );
                         (*responses.add(i)).text = allocation;
                         continue;
                     }
@@ -131,7 +139,12 @@ fn authenticate_with(user: &str, password: &str, config: Option<&CStr>) -> bool
         let Ok(library) = libloading::Library::new("libpam.so.0") else {
             return false;
         };
-        type Start = unsafe extern "C" fn(*const c_char, *const c_char, *const Conversation, *mut *mut c_void) -> c_int;
+        type Start = unsafe extern "C" fn(
+            *const c_char,
+            *const c_char,
+            *const Conversation,
+            *mut *mut c_void,
+        ) -> c_int;
         type StartConf = unsafe extern "C" fn(
             *const c_char,
             *const c_char,