Update init service for FreeBSD

Signed-off-by: AnErrupTion <anerruption@disroot.org>

build.zig

@@ -320,13 +320,12 @@ fn install_service(allocator: std.mem.Allocator, patch_map: PatchMap) !void {
             try installText(patched_service, service_dir, service_path, "ly", .{ .mode = 0o755 });
         },
         .freebsd => {
-            const service_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, config_directory, "/rc.d" });
-            std.fs.cwd().makePath(service_path) catch {};
-            var service_dir = std.fs.cwd().openDir(service_path, .{}) catch unreachable;
-            defer service_dir.close();
+            const exe_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, prefix_directory, "/bin" });
+            var executable_dir = std.fs.cwd().openDir(exe_path, .{}) catch unreachable;
+            defer executable_dir.close();
 
-            const patched_service = try patchFile(allocator, "res/ly-freebsd", patch_map);
-            try installText(patched_service, service_dir, service_path, "ly", .{ .mode = 0o755 });
+            const patched_wrapper = try patchFile(allocator, "res/ly-freebsd-wrapper", patch_map);
+            try installText(patched_wrapper, executable_dir, exe_path, "ly_wrapper", .{ .mode = 0o755 });
         },
     }
 }

readme.md

@@ -180,10 +180,22 @@ To disable TTY 2, go to `/etc/inittab` and comment out the line containing `tty2
 ```
 # zig build installexe -Dprefix_directory=/usr/local -Dinit_system=freebsd
 # sysrc lightdm_enable="NO"
-# sysrc ly_enable="YES"
 ```
 
-To disable TTY 2, go to `/etc/ttys` and comment out the line starting with `ttyv1` (TTYs start at 0 in FreeBSD).
+To enable Ly, add the following entry to `/etc/gettytab`:
+
+```
+Ly:\
+	:lo=/usr/local/bin/ly_wrapper:\
+	:al=root:
+```
+
+Then, modify the command field of the `ttyv1` terminal entry in `/etc/ttys`
+(TTYs in FreeBSD start at 0):
+
+```
+ttyv1 "/usr/libexec/getty Ly" xterm on secure
+```
 
 ### Updating
 

res/ly-freebsd

@@ -1,23 +0,0 @@
-#!/bin/sh
-#
-# PROVIDE: ly
-# REQUIRE: DAEMON
-# KEYWORD: shutdown
-
-. /etc/rc.subr
-
-name=ly
-rcvar=ly_enable
-
-command="/usr/local/bin/ly"
-
-load_rc_config $name
-
-#
-# DO NOT CHANGE THESE DEFAULT VALUES HERE
-# SET THEM IN THE /etc/rc.conf FILE
-#
-ly_enable=${ly_enable-"NO"}
-pidfile=${ly_pidfile-"/var/run/ly.pid"}
-
-run_rc_command "$1"

res/ly-freebsd-wrapper

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# On FreeBSD, even if we override the default login program, getty will still
+# try to append "login -fp root" as arguments to Ly, which is not supported.
+# To avoid this, we use a wrapper script that ignores these arguments before
+# actually executing Ly.
+exec $PREFIX_DIRECTORY/bin/$EXECUTABLE_NAME