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Add system.SetKeepCaps and system.ClearKeepCaps

Docker-DCO-1.1-Signed-off-by: Bernerd Schaefer <bj.schaefer@gmail.com> (github: bernerdschaefer)
Bernerd Schaefer 11 年之前
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共有 1 個文件被更改,包括 16 次插入0 次删除
  1. 16 0
      pkg/system/calls_linux.go

+ 16 - 0
pkg/system/calls_linux.go

@@ -135,6 +135,22 @@ func GetParentDeathSignal() (int, error) {
 	return sig, nil
 }
 
+func SetKeepCaps() error {
+	if _, _, err := syscall.RawSyscall(syscall.SYS_PRCTL, syscall.PR_SET_KEEPCAPS, 1, 0); err != 0 {
+		return err
+	}
+
+	return nil
+}
+
+func ClearKeepCaps() error {
+	if _, _, err := syscall.RawSyscall(syscall.SYS_PRCTL, syscall.PR_SET_KEEPCAPS, 0, 0); err != 0 {
+		return err
+	}
+
+	return nil
+}
+
 func Setctty() error {
 	if _, _, err := syscall.RawSyscall(syscall.SYS_IOCTL, 0, uintptr(syscall.TIOCSCTTY), 0); err != 0 {
 		return err