Add solaris build support

Signed-off-by: Edward Pilatowicz <edward.pilatowicz@oracle.com>

content/local/store_unix.go

@@ -1,4 +1,4 @@
-// +build darwin freebsd
+// +build linux solaris darwin freebsd
 
 package local
 
@@ -6,11 +6,14 @@ import (
 	"os"
 	"syscall"
 	"time"
+
+	"github.com/containerd/containerd/sys"
 )
 
 func getStartTime(fi os.FileInfo) time.Time {
 	if st, ok := fi.Sys().(*syscall.Stat_t); ok {
-		return time.Unix(int64(st.Ctimespec.Sec), int64(st.Ctimespec.Nsec))
+		return time.Unix(int64(sys.StatCtime(st).Sec),
+			int64(sys.StatCtime(st).Nsec))
 	}
 
 	return fi.ModTime()