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iotlcm/bot/internal/notify/health_linux.go

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//go:build linux
package notify
import (
"os"
"syscall"
)
// linkCount 返回目录的硬链接数。
// 宿主机把 bind mount 的源目录删掉后,容器内该目录的 nlink 会变成 0
// (mountinfo 里也能看到 "//deleted"),这是唯一可靠的失效信号。
func linkCount(info os.FileInfo) (uint64, bool) {
st, ok := info.Sys().(*syscall.Stat_t)
if !ok {
return 0, false
}
return uint64(st.Nlink), true
}