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libcontainer: use x/sys/unix instead of the hardcoded value 

PR_SET_CHILD_SUBREAPER is defined in x/sys/unix.

Signed-off-by: Kenta Tada <Kenta.Tada@sony.com>
This commit is contained in:
Kenta Tada 2020-04-23 10:45:40 +09:00
parent cdce577dcf
commit 4474795388
1 changed files with 1 additions and 14 deletions
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15
libcontainer/system/linux.go
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@ -11,19 +11,6 @@ import (
"golang.org/x/sys/unix"
)
// If arg2 is nonzero, set the "child subreaper" attribute of the
// calling process; if arg2 is zero, unset the attribute. When a
// process is marked as a child subreaper, all of the children
// that it creates, and their descendants, will be marked as
// having a subreaper. In effect, a subreaper fulfills the role
// of init(1) for its descendant processes. Upon termination of
// a process that is orphaned (i.e., its immediate parent has
// already terminated) and marked as having a subreaper, the
// nearest still living ancestor subreaper will receive a SIGCHLD
// signal and be able to wait(2) on the process to discover its
// termination status.
const PR_SET_CHILD_SUBREAPER = 36
type ParentDeathSignal int
func (p ParentDeathSignal) Restore() error {
@ -139,7 +126,7 @@ func GetParentNSeuid() int64 {
// SetSubreaper sets the value i as the subreaper setting for the calling process
func SetSubreaper(i int) error {
return unix.Prctl(PR_SET_CHILD_SUBREAPER, uintptr(i), 0, 0, 0)
return unix.Prctl(unix.PR_SET_CHILD_SUBREAPER, uintptr(i), 0, 0, 0)
}
// GetSubreaper returns the subreaper setting for the calling process