nfsdcld: add function to remove unreclaimed client records

This should remove any client record that has a timestamp prior to
the given time.

Eventually, this call will need to be made cluster aware when this is
run in a clustered configuration. For now, this is only suitable for
single-host configurations.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/utils/nfsdcld/nfsdcld.c b/utils/nfsdcld/nfsdcld.c
index 2dfd7ec..2d11868 100644
--- a/utils/nfsdcld/nfsdcld.c
+++ b/utils/nfsdcld/nfsdcld.c
@@ -232,6 +232,37 @@ cld_check(struct cld_client *clnt)
 }
 
 static void
+cld_gracedone(struct cld_client *clnt)
+{
+	int ret;
+	ssize_t bsize, wsize;
+	struct cld_msg *cmsg = &clnt->cl_msg;
+
+	xlog(D_GENERAL, "%s: grace done. cm_gracetime=%ld", __func__,
+			cmsg->cm_u.cm_gracetime);
+
+	ret = sqlite_remove_unreclaimed(cmsg->cm_u.cm_gracetime);
+
+	/* set up reply: downcall with 0 status */
+	cmsg->cm_status = ret ? -EREMOTEIO : ret;
+
+	bsize = sizeof(*cmsg);
+
+	xlog(D_GENERAL, "Doing downcall with status %d", cmsg->cm_status);
+	wsize = atomicio((void *)write, clnt->cl_fd, cmsg, bsize);
+	if (wsize != bsize) {
+		xlog(L_ERROR, "%s: problem writing to cld pipe (%ld): %m",
+			 __func__, wsize);
+		ret = cld_pipe_open(clnt);
+		if (ret) {
+			xlog(L_FATAL, "%s: unable to reopen pipe: %d",
+					__func__, ret);
+			exit(ret);
+		}
+	}
+}
+
+static void
 cldcb(int UNUSED(fd), short which, void *data)
 {
 	ssize_t len;
@@ -265,6 +296,9 @@ cldcb(int UNUSED(fd), short which, void *data)
 	case Cld_Check:
 		cld_check(clnt);
 		break;
+	case Cld_GraceDone:
+		cld_gracedone(clnt);
+		break;
 	default:
 		xlog(L_WARNING, "%s: command %u is not yet implemented",
 				__func__, cmsg->cm_cmd);