fix: keep remote sessions alive across disconnects

3 files changed, 34 insertions, 0 deletions

diff --git a/src/platform/fallback.rs b/src/platform/fallback.rs
index b27f181e..25bc761c 100644
--- a/src/platform/fallback.rs
+++ b/src/platform/fallback.rs
@@ -1,4 +1,5 @@
 use std::path::PathBuf;
+use std::process::Command;
 
 use super::{ClipboardImage, ForegroundJob, Signal};
 
@@ -6,6 +7,14 @@ use super::{ClipboardImage, ForegroundJob, Signal};
 pub fn raise_server_nofile_limit() {}
 
 /// Unsupported platform stub.
+pub fn detach_server_daemon_command(_command: &mut Command) {}
+
+/// Unsupported platform stub.
+pub fn current_process_is_detached_server_daemon() -> bool {
+    false
+}
+
+/// Unsupported platform stub.
 pub fn foreground_job(_child_pid: u32) -> Option<ForegroundJob> {
     None
 }
diff --git a/src/platform/mod.rs b/src/platform/mod.rs
index 0b5f9ecb..169b7c1c 100644
--- a/src/platform/mod.rs
+++ b/src/platform/mod.rs
@@ -40,6 +40,25 @@ pub(crate) const fn capabilities() -> PlatformCapabilities {
     }
 }
 
+#[cfg(any(target_os = "linux", target_os = "macos"))]
+pub fn detach_server_daemon_command(command: &mut std::process::Command) {
+    use std::os::unix::process::CommandExt;
+
+    unsafe {
+        command.pre_exec(|| {
+            if libc::setsid() < 0 {
+                return Err(std::io::Error::last_os_error());
+            }
+            Ok(())
+        });
+    }
+}
+
+#[cfg(any(target_os = "linux", target_os = "macos"))]
+pub fn current_process_is_detached_server_daemon() -> bool {
+    unsafe { libc::getsid(0) == libc::getpid() }
+}
+
 #[cfg(unix)]
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct ClipboardCommand {
diff --git a/src/platform/windows.rs b/src/platform/windows.rs
index 12a8345f..e7a77e35 100644
--- a/src/platform/windows.rs
+++ b/src/platform/windows.rs
@@ -46,6 +46,12 @@ struct WindowsProcessEntry {
 
 pub fn raise_server_nofile_limit() {}
 
+pub fn detach_server_daemon_command(_command: &mut std::process::Command) {}
+
+pub fn current_process_is_detached_server_daemon() -> bool {
+    false
+}
+
 pub fn foreground_job(child_pid: u32) -> Option<ForegroundJob> {
     let entries = snapshot_processes();
     select_pane_foreground_job(child_pid, &entries)