Debian: fix autologin

For some reason, PAM on Debian really wants the full path to
the console device in its rules.
eg, this fails:

auth sufficient pam_succeed_if.so tty = ttyS0

But this works:

auth sufficient pam_succeed_if.so tty = /dev/ttyS0

diff --git a/mkosi/__init__.py b/mkosi/__init__.py
index d405c4b5bcce741dc8cb53f85971a301b102d6c4..82b17392bd01ea9896404b47159a1b7f84d3def0 100644 (file)
--- a/mkosi/__init__.py
+++ b/mkosi/__init__.py
@@ -2867,6 +2867,9 @@ def set_autologin(args: CommandLineArguments, root: str, do_run_build_script: bo
     if do_run_build_script or for_cache or not args.autologin:
         return
 
+    # On Debian, PAM wants the full path to the console device or it will refuse access
+    device_prefix = "/dev/" if args.distribution is Distribution.debian else ""
+
     override_dir = os.path.join(root, "etc/systemd/system/console-getty.service.d")
     os.makedirs(override_dir, mode=0o755, exist_ok=True)
 
@@ -2884,7 +2887,7 @@ def set_autologin(args: CommandLineArguments, root: str, do_run_build_script: bo
 
     os.chmod(override_file, 0o644)
 
-    pam_add_autologin(root, "pts/0")
+    pam_add_autologin(root, f"{device_prefix}pts/0")
 
     override_dir = os.path.join(root, "etc/systemd/system/serial-getty@ttyS0.service.d")
     os.makedirs(override_dir, mode=0o755, exist_ok=True)
@@ -2903,7 +2906,7 @@ def set_autologin(args: CommandLineArguments, root: str, do_run_build_script: bo
 
     os.chmod(override_file, 0o644)
 
-    pam_add_autologin(root, "ttyS0")
+    pam_add_autologin(root, f"{device_prefix}ttyS0")
 
     override_dir = os.path.join(root, "etc/systemd/system/getty@tty1.service.d")
     os.makedirs(override_dir, mode=0o755, exist_ok=True)
@@ -2922,7 +2925,7 @@ def set_autologin(args: CommandLineArguments, root: str, do_run_build_script: bo
 
     os.chmod(override_file, 0o644)
 
-    pam_add_autologin(root, "tty1")
+    pam_add_autologin(root, f"{device_prefix}tty1")
 
 
 def set_serial_terminal(args: CommandLineArguments, root: str, do_run_build_script: bool, for_cache: bool) -> None: