eb5df869ba
The commands used were (roughly): hack/pin-dependency.sh github.com/opencontainers/runc v1.0.1 hack/lint-dependencies.sh # Follow its recommendations. hack/pin-dependency.sh github.com/cilium/ebpf v0.6.2 hack/pin-dependency.sh github.com/opencontainers/selinux v1.8.2 hack/pin-dependency.sh github.com/sirupsen/logrus v1.8.1 # Recheck. hack/lint-dependencies.sh GO111MODULE=on go mod edit -dropreplace github.com/willf/bitset hack/update-vendor.sh # Recheck. hack/lint-dependencies.sh hack/update-internal-modules.sh # Recheck. hack/lint-dependencies.sh Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
111 lines
2.2 KiB
Go
111 lines
2.2 KiB
Go
// +build linux
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package system
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import (
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"os/exec"
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"unsafe"
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"golang.org/x/sys/unix"
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)
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type ParentDeathSignal int
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func (p ParentDeathSignal) Restore() error {
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if p == 0 {
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return nil
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}
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current, err := GetParentDeathSignal()
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if err != nil {
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return err
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}
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if p == current {
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return nil
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}
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return p.Set()
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}
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func (p ParentDeathSignal) Set() error {
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return SetParentDeathSignal(uintptr(p))
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}
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func Execv(cmd string, args []string, env []string) error {
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name, err := exec.LookPath(cmd)
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if err != nil {
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return err
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}
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return Exec(name, args, env)
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}
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func Exec(cmd string, args []string, env []string) error {
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for {
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err := unix.Exec(cmd, args, env)
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if err != unix.EINTR { //nolint:errorlint // unix errors are bare
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return err
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}
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}
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}
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func Prlimit(pid, resource int, limit unix.Rlimit) error {
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_, _, err := unix.RawSyscall6(unix.SYS_PRLIMIT64, uintptr(pid), uintptr(resource), uintptr(unsafe.Pointer(&limit)), uintptr(unsafe.Pointer(&limit)), 0, 0)
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if err != 0 {
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return err
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}
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return nil
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}
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func SetParentDeathSignal(sig uintptr) error {
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if err := unix.Prctl(unix.PR_SET_PDEATHSIG, sig, 0, 0, 0); err != nil {
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return err
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}
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return nil
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}
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func GetParentDeathSignal() (ParentDeathSignal, error) {
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var sig int
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if err := unix.Prctl(unix.PR_GET_PDEATHSIG, uintptr(unsafe.Pointer(&sig)), 0, 0, 0); err != nil {
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return -1, err
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}
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return ParentDeathSignal(sig), nil
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}
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func SetKeepCaps() error {
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if err := unix.Prctl(unix.PR_SET_KEEPCAPS, 1, 0, 0, 0); err != nil {
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return err
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}
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return nil
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}
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func ClearKeepCaps() error {
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if err := unix.Prctl(unix.PR_SET_KEEPCAPS, 0, 0, 0, 0); err != nil {
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return err
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}
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return nil
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}
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func Setctty() error {
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if err := unix.IoctlSetInt(0, unix.TIOCSCTTY, 0); err != nil {
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return err
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}
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return nil
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}
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// SetSubreaper sets the value i as the subreaper setting for the calling process
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func SetSubreaper(i int) error {
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return unix.Prctl(unix.PR_SET_CHILD_SUBREAPER, uintptr(i), 0, 0, 0)
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}
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// GetSubreaper returns the subreaper setting for the calling process
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func GetSubreaper() (int, error) {
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var i uintptr
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if err := unix.Prctl(unix.PR_GET_CHILD_SUBREAPER, uintptr(unsafe.Pointer(&i)), 0, 0, 0); err != nil {
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return -1, err
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}
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return int(i), nil
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}
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