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daemon_unix.go
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daemon_unix.go
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// +build !windows
package daemon // import "github.com/docker/docker/internal/test/daemon"
import (
"fmt"
"os"
"path/filepath"
"strings"
"github.com/docker/docker/internal/test"
"golang.org/x/sys/unix"
"gotest.tools/assert"
)
func cleanupNetworkNamespace(t testingT, execRoot string) {
if ht, ok := t.(test.HelperT); ok {
ht.Helper()
}
// Cleanup network namespaces in the exec root of this
// daemon because this exec root is specific to this
// daemon instance and has no chance of getting
// cleaned up when a new daemon is instantiated with a
// new exec root.
netnsPath := filepath.Join(execRoot, "netns")
filepath.Walk(netnsPath, func(path string, info os.FileInfo, err error) error {
if err := unix.Unmount(path, unix.MNT_DETACH); err != nil && err != unix.EINVAL && err != unix.ENOENT {
t.Logf("unmount of %s failed: %v", path, err)
}
os.Remove(path)
return nil
})
}
// CgroupNamespace returns the cgroup namespace the daemon is running in
func (d *Daemon) CgroupNamespace(t assert.TestingT) string {
link, err := os.Readlink(fmt.Sprintf("/proc/%d/ns/cgroup", d.Pid()))
assert.NilError(t, err)
return strings.TrimSpace(link)
}
// SignalDaemonDump sends a signal to the daemon to write a dump file
func SignalDaemonDump(pid int) {
unix.Kill(pid, unix.SIGQUIT)
}
func signalDaemonReload(pid int) error {
return unix.Kill(pid, unix.SIGHUP)
}