sandbox: cache kernel.cap_last_cap value

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

1 files changed, 0 insertions, 37 deletions

diff --git a/sandbox/overflow.go b/sandbox/overflow.go
deleted file mode 100644
index ebaad704..00000000
--- a/sandbox/overflow.go
+++ /dev/null
@@ -1,37 +0,0 @@
-package sandbox
-
-import (
-	"bytes"
-	"log"
-	"os"
-	"strconv"
-	"sync"
-)
-
-var (
-	ofUid  int
-	ofGid  int
-	ofOnce sync.Once
-)
-
-const (
-	ofUidPath = "/proc/sys/kernel/overflowuid"
-	ofGidPath = "/proc/sys/kernel/overflowgid"
-)
-
-func mustReadOverflow() {
-	if v, err := os.ReadFile(ofUidPath); err != nil {
-		log.Fatalf("cannot read %q: %v", ofUidPath, err)
-	} else if ofUid, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil {
-		log.Fatalf("cannot interpret %q: %v", ofUidPath, err)
-	}
-
-	if v, err := os.ReadFile(ofGidPath); err != nil {
-		log.Fatalf("cannot read %q: %v", ofGidPath, err)
-	} else if ofGid, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil {
-		log.Fatalf("cannot interpret %q: %v", ofGidPath, err)
-	}
-}
-
-func OverflowUid() int { ofOnce.Do(mustReadOverflow); return ofUid }
-func OverflowGid() int { ofOnce.Do(mustReadOverflow); return ofGid }