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moby--moby/libnetwork/system.go
Arnaud Porterie 0d29ca540f Initial import
Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
2015-02-19 17:30:18 -08:00

34 lines
839 B
Go

package libnetwork
import (
"fmt"
"runtime"
"syscall"
)
// Via http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b21fddd087678a70ad64afc0f632e0f1071b092
//
// We need different setns values for the different platforms and arch
// We are declaring the macro here because the SETNS syscall does not exist in th stdlib
var setNsMap = map[string]uintptr{
"linux/386": 346,
"linux/amd64": 308,
"linux/arm": 374,
"linux/ppc64": 350,
"linux/ppc64le": 350,
"linux/s390x": 339,
}
func Setns(fd uintptr, flags uintptr) error {
ns, exists := setNsMap[fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH)]
if !exists {
return fmt.Errorf("unsupported platform %s/%s", runtime.GOOS, runtime.GOARCH)
}
_, _, err := syscall.RawSyscall(ns, fd, flags, 0)
if err != 0 {
return err
}
return nil
}