5982af4969
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
32 lines
772 B
Go
32 lines
772 B
Go
package system
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import (
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"errors"
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"fmt"
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"runtime"
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"syscall"
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)
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var (
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ErrNotSupportedPlatform = errors.New("platform and architecture is not supported")
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)
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// Via http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b21fddd087678a70ad64afc0f632e0f1071b092
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//
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// We need different setns values for the different platforms and arch
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// We are declaring the macro here because the SETNS syscall does not exist in th stdlib
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var setNsMap = map[string]uintptr{
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"linux/amd64": 308,
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}
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func Setns(fd uintptr, flags uintptr) error {
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ns, exists := setNsMap[fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH)]
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if !exists {
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return ErrNotSupportedPlatform
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}
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_, _, err := syscall.RawSyscall(ns, fd, flags, 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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