package dmesg // import "github.com/docker/docker/pkg/dmesg" import ( "unsafe" "golang.org/x/sys/unix" ) // Dmesg returns last messages from the kernel log, up to size bytes func Dmesg(size int) []byte { t := uintptr(3) // SYSLOG_ACTION_READ_ALL b := make([]byte, size) amt, _, err := unix.Syscall(unix.SYS_SYSLOG, t, uintptr(unsafe.Pointer(&b[0])), uintptr(len(b))) if err != 0 { return []byte{} } return b[:amt] }