internal: remove sys package

This package is replaced by container/stub. Remove and replace it with unexported implementation for the upcoming test suite rewrite.

Signed-off-by: Ophestra <cat@gensokyo.uk>

1 files changed, 0 insertions, 88 deletions

diff --git a/internal/sys/hsu.go b/internal/sys/hsu.go
deleted file mode 100644
index 5ae12046..00000000
--- a/internal/sys/hsu.go
+++ /dev/null
@@ -1,88 +0,0 @@
-package sys
-
-import (
-	"errors"
-	"fmt"
-	"log"
-	"os"
-	"os/exec"
-	"strconv"
-	"sync"
-
-	"hakurei.app/container"
-	"hakurei.app/hst"
-	"hakurei.app/internal"
-	"hakurei.app/internal/hlog"
-)
-
-// Hsu caches responses from cmd/hsu.
-type Hsu struct {
-	idOnce sync.Once
-	idErr  error
-	id     int
-}
-
-var ErrHsuAccess = errors.New("current user is not in the hsurc file")
-
-// ID returns the current user hsurc identifier. ErrHsuAccess is returned if the current user is not in hsurc.
-func (h *Hsu) ID() (int, error) {
-	h.idOnce.Do(func() {
-		h.id = -1
-		hsuPath := internal.MustHsuPath()
-
-		cmd := exec.Command(hsuPath)
-		cmd.Path = hsuPath
-		cmd.Stderr = os.Stderr // pass through fatal messages
-		cmd.Env = make([]string, 0)
-		cmd.Dir = container.FHSRoot
-		var (
-			p         []byte
-			exitError *exec.ExitError
-		)
-
-		const step = "obtain uid from hsu"
-		if p, h.idErr = cmd.Output(); h.idErr == nil {
-			h.id, h.idErr = strconv.Atoi(string(p))
-			if h.idErr != nil {
-				h.idErr = &hst.AppError{Step: step, Err: h.idErr, Msg: "invalid uid string from hsu"}
-			}
-		} else if errors.As(h.idErr, &exitError) && exitError != nil && exitError.ExitCode() == 1 {
-			// hsu prints an error message in this case
-			h.idErr = &hst.AppError{Step: step, Err: ErrHsuAccess}
-		} else if os.IsNotExist(h.idErr) {
-			h.idErr = &hst.AppError{Step: step, Err: os.ErrNotExist,
-				Msg: fmt.Sprintf("the setuid helper is missing: %s", hsuPath)}
-		}
-	})
-
-	return h.id, h.idErr
-}
-
-func (h *Hsu) Uid(identity int) (int, error) {
-	id, err := h.ID()
-	if err == nil {
-		return 1000000 + id*10000 + identity, nil
-	}
-	return id, err
-}
-
-// MustUid calls [State.Uid] and terminates on error.
-func MustUid(s State, identity int) int {
-	uid, err := s.Uid(identity)
-	if err == nil {
-		return uid
-	}
-
-	const fallback = "cannot obtain uid from setuid wrapper:"
-	if errors.Is(err, ErrHsuAccess) {
-		hlog.Verbose("*"+fallback, err)
-		os.Exit(1)
-		return -0xdeadbeef
-	} else if m, ok := container.GetErrorMessage(err); ok {
-		log.Fatal(m)
-		return -0xdeadbeef
-	} else {
-		log.Fatalln(fallback, err)
-		return -0xdeadbeef
-	}
-}