From bfe12c805277bdb4614143c22f3daea31ab90a1c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=89=E5=92=B2=E9=9B=85=20misaki=20masa?=
 <sxyazi@gmail.com>
Date: Mon, 21 Jul 2025 14:42:10 +0800
Subject: [PATCH] fix: suspend only when there is a parent process (#3008)

---
 Cargo.lock                     | 10 +++++-----
 yazi-actor/src/mgr/suspend.rs  |  6 ++++--
 yazi-boot/src/actions/debug.rs |  2 +-
 yazi-macro/src/actor.rs        |  4 ++--
 yazi-shared/src/os.rs          |  3 +++
 5 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 257acce1..5e0d52c9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2026,9 +2026,9 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.9.1"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fbfd9d094a40bf3ae768db9361049ace4c0e04a4fd6b359518bd7b73a73dd97"
+checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
 dependencies = [
  "rand_chacha 0.9.0",
  "rand_core 0.9.3",
@@ -2155,9 +2155,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.5.13"
+version = "0.5.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d04b7d0ee6b4a0207a0a7adb104d23ecb0b47d6beae7152d0fa34b692b29fd6"
+checksum = "de3a5d9f0aba1dbcec1cc47f0ff94a4b778fe55bca98a6dfa92e4e094e57b1c4"
 dependencies = [
  "bitflags 2.9.1",
 ]
@@ -2907,7 +2907,7 @@ version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b907da542cbced5261bd3256de1b3a1bf340a3d37f93425a07362a1d687de56"
 dependencies = [
- "rand 0.9.1",
+ "rand 0.9.2",
 ]
 
 [[package]]
diff --git a/yazi-actor/src/mgr/suspend.rs b/yazi-actor/src/mgr/suspend.rs
index c8b881f3..61da21fb 100644
--- a/yazi-actor/src/mgr/suspend.rs
+++ b/yazi-actor/src/mgr/suspend.rs
@@ -14,8 +14,10 @@ impl Actor for Suspend {
 
 	fn act(_: &mut Ctx, _: Self::Options) -> Result<Data> {
 		#[cfg(unix)]
-		unsafe {
-			libc::raise(libc::SIGTSTP);
+		if !yazi_shared::session_leader() {
+			unsafe {
+				libc::raise(libc::SIGTSTP);
+			}
 		}
 		succ!();
 	}
diff --git a/yazi-boot/src/actions/debug.rs b/yazi-boot/src/actions/debug.rs
index 07ae04dd..9ee15264 100644
--- a/yazi-boot/src/actions/debug.rs
+++ b/yazi-boot/src/actions/debug.rs
@@ -39,7 +39,7 @@ impl Actions {
 		writeln!(s, "    WAYFIRE_SOCKET             : {:?}", env::var_os("WAYFIRE_SOCKET"))?;
 
 		writeln!(s, "\nSSH")?;
-		writeln!(s, "    shared.in_ssh_connection: {:?}", yazi_shared::in_ssh_connection())?;
+		writeln!(s, "    shared.in_ssh_connection: {}", yazi_shared::in_ssh_connection())?;
 
 		writeln!(s, "\nWSL")?;
 		writeln!(s, "    WSL: {:?}", yazi_adapter::WSL)?;
diff --git a/yazi-macro/src/actor.rs b/yazi-macro/src/actor.rs
index f73b1199..df72cf68 100644
--- a/yazi-macro/src/actor.rs
+++ b/yazi-macro/src/actor.rs
@@ -8,8 +8,8 @@ macro_rules! act {
 	(@impl $layer:ident : $name:ident, $cx:ident, $opt:ident) => {{
 		$cx.level += 1;
 		let result = match act!(@pre $layer:$name, $cx, $opt) {
-			None | Some(Ok(yazi_shared::event::Data::Boolean(false))) => <act!($layer:$name) as yazi_actor::Actor>::act($cx, $opt),
-			Some(Ok(_)) => Err(anyhow::anyhow!("canceled on preflight")),
+			Some(Ok(yazi_shared::event::Data::Boolean(true))) => Err(anyhow::anyhow!("canceled on preflight")),
+			None | Some(Ok(_)) => <act!($layer:$name) as yazi_actor::Actor>::act($cx, $opt),
 			Some(e @ Err(_)) => e,
 		};
 		$cx.level -= 1;
diff --git a/yazi-shared/src/os.rs b/yazi-shared/src/os.rs
index fa9f213a..3eaf57ea 100644
--- a/yazi-shared/src/os.rs
+++ b/yazi-shared/src/os.rs
@@ -25,3 +25,6 @@ fn hostname_impl() -> Result<String, std::io::Error> {
 		.map_err(|_| std::io::Error::other("invalid hostname"))
 		.map(|s| s.to_owned())
 }
+
+#[cfg(unix)]
+pub fn session_leader() -> bool { unsafe { libc::getsid(0) == libc::getpid() } }