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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/inittmpfs.go
View File

@@ -3,6 +3,7 @@ package container
import (
"encoding/gob"
"fmt"
"io/fs"
"math"
"os"
. "syscall"
@@ -31,13 +32,13 @@ type MountTmpfsOp struct {
Perm os.FileMode
}
func (t *MountTmpfsOp) Valid() bool { return t != nil && t.Path != nil && t.FSName != zeroString }
func (t *MountTmpfsOp) early(*setupState) error { return nil }
func (t *MountTmpfsOp) apply(*setupState) error {
func (t *MountTmpfsOp) Valid() bool { return t != nil && t.Path != nil && t.FSName != zeroString }
func (t *MountTmpfsOp) early(*setupState, syscallDispatcher) error { return nil }
func (t *MountTmpfsOp) apply(_ *setupState, k syscallDispatcher) error {
if t.Size < 0 || t.Size > math.MaxUint>>1 {
return msg.WrapErr(EBADE, fmt.Sprintf("size %d out of bounds", t.Size))
return msg.WrapErr(fs.ErrInvalid, fmt.Sprintf("size %d out of bounds", t.Size))
}
return mountTmpfs(t.FSName, toSysroot(t.Path.String()), t.Flags, t.Size, t.Perm)
return k.mountTmpfs(t.FSName, toSysroot(t.Path.String()), t.Flags, t.Size, t.Perm)
}
func (t *MountTmpfsOp) Is(op Op) bool {