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container/init: wrap syscall helper functions
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Browse Source 
This allows tests to stub all kernel behaviour, enabling measurement of all function call arguments and error injection.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-08-21 21:59:07 +09:00
parent d500d6e559
commit 09d2844981
32 changed files with 2835 additions and 362 deletions
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11
container/initproc.go
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@@ -3,7 +3,6 @@ package container
import (
"encoding/gob"
"fmt"
"os"
. "syscall"
)
@@ -18,14 +17,14 @@ func (f *Ops) Proc(target *Absolute) *Ops {
// MountProcOp mounts a new instance of [FstypeProc] on container path Target.
type MountProcOp struct{ Target *Absolute }
func (p *MountProcOp) Valid() bool { return p != nil && p.Target != nil }
func (p *MountProcOp) early(*setupState) error { return nil }
func (p *MountProcOp) apply(state *setupState) error {
func (p *MountProcOp) Valid() bool { return p != nil && p.Target != nil }
func (p *MountProcOp) early(*setupState, syscallDispatcher) error { return nil }
func (p *MountProcOp) apply(state *setupState, k syscallDispatcher) error {
target := toSysroot(p.Target.String())
if err := os.MkdirAll(target, state.ParentPerm); err != nil {
if err := k.mkdirAll(target, state.ParentPerm); err != nil {
return wrapErrSelf(err)
}
return wrapErrSuffix(Mount(SourceProc, target, FstypeProc, MS_NOSUID|MS_NOEXEC|MS_NODEV, zeroString),
return wrapErrSuffix(k.mount(SourceProc, target, FstypeProc, MS_NOSUID|MS_NOEXEC|MS_NODEV, zeroString),
fmt.Sprintf("cannot mount proc on %q:", p.Target.String()))
}