From 27e95c346ac2a821df8fcd276d5e6addf66d705c Mon Sep 17 00:00:00 2001
From: Augustin Cavalier <waddlesplash@gmail.com>
Date: Fri, 27 Feb 2026 10:13:46 -0500
Subject: [PATCH] posix_spawn: Fix implementation of POSIX_SPAWN_SETSID.

setsid() returns -1 in case of error, and a pid_t in case of success.
---
 src/system/libroot/posix/spawn.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/system/libroot/posix/spawn.cpp b/src/system/libroot/posix/spawn.cpp
index 111c089b46..2e036667bd 100644
--- a/src/system/libroot/posix/spawn.cpp
+++ b/src/system/libroot/posix/spawn.cpp
@@ -430,7 +430,7 @@ process_spawnattr(const posix_spawnattr_t *_attr)
 	}
 
 	if ((attr->flags & POSIX_SPAWN_SETSID) != 0) {
-		if (setsid() != 0)
+		if (setsid() < 0)
 			return errno;
 	}