Add clean-logs-older-than option

jay-config/src/_private/client.rs

@@ -60,7 +60,7 @@ use {
             atomic::{AtomicBool, Ordering::Relaxed},
         },
         task::{Context, Poll, Waker},
-        time::Duration,
+        time::{Duration, SystemTime},
     },
 };
 
@@ -776,6 +776,10 @@ impl ConfigClient {
         self.send(&ClientMessage::SetLogLevel { level })
     }
 
+    pub fn clean_logs_older_than(&self, time: SystemTime) {
+        self.send(&ClientMessage::CleanLogsOlderThan { time })
+    }
+
     pub fn unset_env(&self, key: &str) {
         self.send(&ClientMessage::UnsetEnv { key });
     }

jay-config/src/_private/ipc.rs

@@ -21,7 +21,7 @@ use {
         xwayland::XScalingMode,
     },
     serde::{Deserialize, Serialize},
-    std::time::Duration,
+    std::time::{Duration, SystemTime},
 };
 
 #[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]
@@ -861,6 +861,9 @@ pub enum ClientMessage<'a> {
     SeatWarpMouseToFocus {
         seat: Seat,
     },
+    CleanLogsOlderThan {
+        time: SystemTime,
+    },
 }
 
 #[derive(Serialize, Deserialize, Debug)]

jay-config/src/logging.rs

@@ -3,7 +3,10 @@
 //! Note that you can use the `log` crate for logging. All invocations of `log::info` etc.
 //! automatically log into the compositors log.
 
-use serde::{Deserialize, Serialize};
+use {
+    serde::{Deserialize, Serialize},
+    std::time::SystemTime,
+};
 
 /// The log level of the compositor or a log message.
 #[derive(Serialize, Deserialize, Copy, Clone, Debug)]
@@ -19,3 +22,13 @@ pub enum LogLevel {
 pub fn set_log_level(level: LogLevel) {
     get!().set_log_level(level);
 }
+
+/// If this function is called during startup, Jay's log files before `time` are deleted.
+///
+/// The current log file is never deleted, nor are any other logfiles of active Jay instances (e.g.
+/// on another VT), even if `time` is in the future.
+///
+/// Calling this function after startup has no effect.
+pub fn clean_logs_older_than(time: SystemTime) {
+    get!().clean_logs_older_than(time);
+}