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-rw-r--r--src/libsystemd/kdbus.h22
1 files changed, 20 insertions, 2 deletions
diff --git a/src/libsystemd/kdbus.h b/src/libsystemd/kdbus.h
index 10102d4335..fe0bb48728 100644
--- a/src/libsystemd/kdbus.h
+++ b/src/libsystemd/kdbus.h
@@ -9,6 +9,9 @@
* the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
+ *
+ * "Everything should be made as simple as possible, but not simpler."
+ * -- Albert Einstein
*/
#ifndef _KDBUS_H_
@@ -327,12 +330,23 @@ struct kdbus_item {
* cookie identifies the message and the
* respective reply carries the cookie
* in cookie_reply
+ * @KDBUS_MSG_FLAGS_SYNC_REPLY: Wait for destination connection to
+ * reply to this message. The
+ * KDBUS_CMD_MSG_SEND ioctl() will block
+ * until the reply is received, and
+ * offset_reply in struct kdbus_msg will
+ * yield the offset in the sender's pool
+ * where the reply can be found.
+ * This flag is only valid if
+ * @KDBUS_MSG_FLAGS_EXPECT_REPLY is set as
+ * well.
* @KDBUS_MSG_FLAGS_NO_AUTO_START: Do not start a service, if the addressed
* name is not currently active
*/
enum kdbus_msg_flags {
KDBUS_MSG_FLAGS_EXPECT_REPLY = 1 << 0,
- KDBUS_MSG_FLAGS_NO_AUTO_START = 1 << 1,
+ KDBUS_MSG_FLAGS_SYNC_REPLY = 1 << 1,
+ KDBUS_MSG_FLAGS_NO_AUTO_START = 1 << 2,
};
/**
@@ -362,6 +376,9 @@ enum kdbus_payload_type {
* @cookie_reply: A reply to the requesting message with the same
* cookie. The requesting connection can match its
* request and the reply with this value
+ * @offset_reply: If KDBUS_MSG_FLAGS_WAIT_FOR_REPLY, this field will
+ * contain the offset in the sender's pool where the
+ * reply is stored.
* @items: A list of kdbus_items containing the message payload
*/
struct kdbus_msg {
@@ -375,6 +392,7 @@ struct kdbus_msg {
union {
__u64 timeout_ns;
__u64 cookie_reply;
+ __u64 offset_reply;
};
struct kdbus_item items[0];
} __attribute__((aligned(8)));
@@ -399,7 +417,7 @@ enum kdbus_recv_flags {
};
/**
- * kdbus_cmd_recv - struct to de-queue a buffered message
+ * struct kdbus_cmd_recv - struct to de-queue a buffered message
* @flags: KDBUS_RECV_* flags
* @priority: Minimum priority of the messages to de-queue. Lowest
* values have the highest priority.