From 5d25bee7869e5ecec20e9bddc9f27d9b4a0b0988 Mon Sep 17 00:00:00 2001
From: Ophestra Umiker <cat@ophivana.moe>
Date: Thu, 19 Dec 2024 11:14:31 +0900
Subject: [PATCH] fortify: remove systemd check

This is no longer necessary as fortify no longer integrates with external user switchers.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
---
 internal/linux/interface.go |  2 --
 internal/linux/std.go       | 32 --------------------------------
 main.go                     |  4 ----
 3 files changed, 38 deletions(-)

diff --git a/internal/linux/interface.go b/internal/linux/interface.go
index a920492..ff54284 100644
--- a/internal/linux/interface.go
+++ b/internal/linux/interface.go
@@ -39,8 +39,6 @@ type System interface {
 	Paths() Paths
 	// Uid invokes fsu and returns target uid.
 	Uid(aid int) (int, error)
-	// SdBooted implements https://www.freedesktop.org/software/systemd/man/sd_booted.html
-	SdBooted() bool
 }
 
 // Paths contains environment dependent paths used by fortify.
diff --git a/internal/linux/std.go b/internal/linux/std.go
index 4ea5b90..61864be 100644
--- a/internal/linux/std.go
+++ b/internal/linux/std.go
@@ -1,7 +1,6 @@
 package linux
 
 import (
-	"errors"
 	"io"
 	"io/fs"
 	"os"
@@ -19,9 +18,6 @@ type Std struct {
 	paths     Paths
 	pathsOnce sync.Once
 
-	sdBooted     bool
-	sdBootedOnce sync.Once
-
 	uidOnce sync.Once
 	uidCopy map[int]struct {
 		uid int
@@ -90,31 +86,3 @@ func (s *Std) Uid(aid int) (int, error) {
 		return u.uid, u.err
 	}
 }
-
-func (s *Std) SdBooted() bool {
-	s.sdBootedOnce.Do(func() { s.sdBooted = copySdBooted() })
-	return s.sdBooted
-}
-
-const systemdCheckPath = "/run/systemd/system"
-
-func copySdBooted() bool {
-	if v, err := sdBooted(); err != nil {
-		fmsg.Println("cannot read systemd marker:", err)
-		return false
-	} else {
-		return v
-	}
-}
-
-func sdBooted() (bool, error) {
-	_, err := os.Stat(systemdCheckPath)
-	if err != nil {
-		if errors.Is(err, fs.ErrNotExist) {
-			err = nil
-		}
-		return false, err
-	}
-
-	return true, nil
-}
diff --git a/main.go b/main.go
index e391435..65c5a81 100644
--- a/main.go
+++ b/main.go
@@ -277,10 +277,6 @@ func main() {
 }
 
 func runApp(config *fst.Config) {
-	if os.SdBooted() {
-		fmsg.VPrintln("system booted with systemd as init system")
-	}
-
 	a, err := app.New(os)
 	if err != nil {
 		fmsg.Fatalf("cannot create app: %s\n", err)