mirror of
https://github.com/opencontainers/runc.git
synced 2026-07-11 06:03:57 +08:00
Kir Kolyshkin
f62f0bdfbf
golangci-lint v1.54.2 comes with errorlint v1.4.4, which contains the fix [1] whitelisting all errno comparisons for errors coming from x/sys/unix. Thus, these annotations are no longer necessary. Hooray! [1] https://github.com/polyfloyd/go-errorlint/pull/47 Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
105 lines
1.9 KiB
Go
105 lines
1.9 KiB
Go
//go:build linux
|
|
// +build linux
|
|
|
|
package system
|
|
|
|
import (
|
|
"os"
|
|
"os/exec"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
type ParentDeathSignal int
|
|
|
|
func (p ParentDeathSignal) Restore() error {
|
|
if p == 0 {
|
|
return nil
|
|
}
|
|
current, err := GetParentDeathSignal()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if p == current {
|
|
return nil
|
|
}
|
|
return p.Set()
|
|
}
|
|
|
|
func (p ParentDeathSignal) Set() error {
|
|
return SetParentDeathSignal(uintptr(p))
|
|
}
|
|
|
|
func Execv(cmd string, args []string, env []string) error {
|
|
name, err := exec.LookPath(cmd)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return Exec(name, args, env)
|
|
}
|
|
|
|
func Exec(cmd string, args []string, env []string) error {
|
|
for {
|
|
err := unix.Exec(cmd, args, env)
|
|
if err != unix.EINTR {
|
|
return &os.PathError{Op: "exec", Path: cmd, Err: err}
|
|
}
|
|
}
|
|
}
|
|
|
|
func SetParentDeathSignal(sig uintptr) error {
|
|
if err := unix.Prctl(unix.PR_SET_PDEATHSIG, sig, 0, 0, 0); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func GetParentDeathSignal() (ParentDeathSignal, error) {
|
|
var sig int
|
|
if err := unix.Prctl(unix.PR_GET_PDEATHSIG, uintptr(unsafe.Pointer(&sig)), 0, 0, 0); err != nil {
|
|
return -1, err
|
|
}
|
|
return ParentDeathSignal(sig), nil
|
|
}
|
|
|
|
func SetKeepCaps() error {
|
|
if err := unix.Prctl(unix.PR_SET_KEEPCAPS, 1, 0, 0, 0); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func ClearKeepCaps() error {
|
|
if err := unix.Prctl(unix.PR_SET_KEEPCAPS, 0, 0, 0, 0); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func Setctty() error {
|
|
if err := unix.IoctlSetInt(0, unix.TIOCSCTTY, 0); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// SetSubreaper sets the value i as the subreaper setting for the calling process
|
|
func SetSubreaper(i int) error {
|
|
return unix.Prctl(unix.PR_SET_CHILD_SUBREAPER, uintptr(i), 0, 0, 0)
|
|
}
|
|
|
|
// GetSubreaper returns the subreaper setting for the calling process
|
|
func GetSubreaper() (int, error) {
|
|
var i uintptr
|
|
|
|
if err := unix.Prctl(unix.PR_GET_CHILD_SUBREAPER, uintptr(unsafe.Pointer(&i)), 0, 0, 0); err != nil {
|
|
return -1, err
|
|
}
|
|
|
|
return int(i), nil
|
|
}
|