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container: remove global msg

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This frees all container instances of side effects.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-09-29 02:33:10 +09:00
parent ad1bc6794f
commit 46cd3a28c8
69 changed files with 987 additions and 838 deletions
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41
container/sysctl.go
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@@ -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) }