Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 101 insertions, 0 deletions

diff --git a/ctdb/common/pkt_write.c b/ctdb/common/pkt_write.c
new file mode 100644
index 0000000..b1c1730
--- /dev/null
+++ b/ctdb/common/pkt_write.c
@@ -0,0 +1,101 @@
+/*
+   Write a packet
+
+   Copyright (C) Amitay Isaacs 2015
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "system/network.h"
+
+#include <talloc.h>
+#include <tevent.h>
+
+#include "lib/util/tevent_unix.h"
+
+#include "pkt_write.h"
+
+/*
+ * Write a packet
+ */
+
+struct pkt_write_state {
+	int fd;
+	uint8_t *buf;
+	size_t buflen, offset;
+};
+
+struct tevent_req *pkt_write_send(TALLOC_CTX *mem_ctx,
+				  struct tevent_context *ev,
+				  int fd, uint8_t *buf, size_t buflen)
+{
+	struct tevent_req *req;
+	struct pkt_write_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct pkt_write_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	state->fd = fd;
+	state->buf = buf;
+	state->buflen = buflen;
+	state->offset = 0;
+
+	return req;
+}
+
+void pkt_write_handler(struct tevent_context *ev, struct tevent_fd *fde,
+		       uint16_t flags, struct tevent_req *req)
+{
+	struct pkt_write_state *state = tevent_req_data(
+		req, struct pkt_write_state);
+	ssize_t nwritten;
+
+	nwritten = write(state->fd, state->buf + state->offset,
+			 state->buflen - state->offset);
+	if ((nwritten == -1) && (errno == EINTR)) {
+		/* retry */
+		return;
+	}
+	if (nwritten == -1) {
+		tevent_req_error(req, errno);
+		return;
+	}
+	if (nwritten == 0) {
+		/* retry */
+		return;
+	}
+
+	state->offset += nwritten;
+	if (state->offset < state->buflen) {
+		/* come back later */
+		return;
+	}
+
+	tevent_req_done(req);
+}
+
+ssize_t pkt_write_recv(struct tevent_req *req, int *perrno)
+{
+	struct pkt_write_state *state = tevent_req_data(
+		req, struct pkt_write_state);
+
+	if (tevent_req_is_unix_error(req, perrno)) {
+		return -1;
+	}
+
+	return state->offset;
+}