diff options
Diffstat (limited to 'container/sysctl.go')
| -rw-r--r-- | container/sysctl.go | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/container/sysctl.go b/container/sysctl.go index bfcf2788..327872b5 100644 --- a/container/sysctl.go +++ b/container/sysctl.go @@ -2,7 +2,6 @@ package container import ( "bytes" - "log" "os" "strconv" "sync" @@ -22,26 +21,28 @@ const ( kernelCapLastCapPath = FHSProcSys + "kernel/cap_last_cap" ) -func mustReadSysctl() { - if v, err := os.ReadFile(kernelOverflowuidPath); err != nil { - log.Fatalf("cannot read %q: %v", kernelOverflowuidPath, err) - } else if kernelOverflowuid, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil { - log.Fatalf("cannot interpret %q: %v", kernelOverflowuidPath, err) - } +func mustReadSysctl(msg Msg) { + sysctlOnce.Do(func() { + if v, err := os.ReadFile(kernelOverflowuidPath); err != nil { + msg.GetLogger().Fatalf("cannot read %q: %v", kernelOverflowuidPath, err) + } else if kernelOverflowuid, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil { + msg.GetLogger().Fatalf("cannot interpret %q: %v", kernelOverflowuidPath, err) + } - if v, err := os.ReadFile(kernelOverflowgidPath); err != nil { - log.Fatalf("cannot read %q: %v", kernelOverflowgidPath, err) - } else if kernelOverflowgid, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil { - log.Fatalf("cannot interpret %q: %v", kernelOverflowgidPath, err) - } + if v, err := os.ReadFile(kernelOverflowgidPath); err != nil { + msg.GetLogger().Fatalf("cannot read %q: %v", kernelOverflowgidPath, err) + } else if kernelOverflowgid, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil { + msg.GetLogger().Fatalf("cannot interpret %q: %v", kernelOverflowgidPath, err) + } - if v, err := os.ReadFile(kernelCapLastCapPath); err != nil { - log.Fatalf("cannot read %q: %v", kernelCapLastCapPath, err) - } else if kernelCapLastCap, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil { - log.Fatalf("cannot interpret %q: %v", kernelCapLastCapPath, err) - } + if v, err := os.ReadFile(kernelCapLastCapPath); err != nil { + msg.GetLogger().Fatalf("cannot read %q: %v", kernelCapLastCapPath, err) + } else if kernelCapLastCap, err = strconv.Atoi(string(bytes.TrimSpace(v))); err != nil { + msg.GetLogger().Fatalf("cannot interpret %q: %v", kernelCapLastCapPath, err) + } + }) } -func OverflowUid() int { sysctlOnce.Do(mustReadSysctl); return kernelOverflowuid } -func OverflowGid() int { sysctlOnce.Do(mustReadSysctl); return kernelOverflowgid } -func LastCap() uintptr { sysctlOnce.Do(mustReadSysctl); return uintptr(kernelCapLastCap) } +func OverflowUid(msg Msg) int { mustReadSysctl(msg); return kernelOverflowuid } +func OverflowGid(msg Msg) int { mustReadSysctl(msg); return kernelOverflowgid } +func LastCap(msg Msg) uintptr { mustReadSysctl(msg); return uintptr(kernelCapLastCap) } |