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bus: set cookie_reply and update kdbus.h

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This commit is contained in:
Kay Sievers 2013-12-25 05:02:58 +01:00
parent 2e3db52da9
commit 28f45c1c2e
2 changed files with 16 additions and 14 deletions
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2
src/libsystemd-bus/bus-kernel.c
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@ -257,7 +257,7 @@ static int bus_message_setup_kmsg(sd_bus *b, sd_bus_message *m) {
m->destination ? unique : KDBUS_DST_ID_BROADCAST;
m->kdbus->payload_type = KDBUS_PAYLOAD_DBUS;
m->kdbus->cookie = m->header->serial;
m->kdbus->cookie_reply = m->reply_serial;
m->kdbus->timeout_ns = m->timeout * NSEC_PER_USEC;
d = m->kdbus->items;

28
src/libsystemd-bus/kdbus.h
View File

@ -314,8 +314,9 @@ struct kdbus_item {
/**
* enum kdbus_msg_flags - type of message
* @KDBUS_MSG_FLAGS_EXPECT_REPLY: Expect a reply message, used for method
* calls. The cookie identifies the
* message and the respective reply
* calls. The userspace-supplied cookie identifies
* the message and the respective reply
* carries the cookie in cookie_reply
* @KDBUS_MSG_FLAGS_NO_AUTO_START: Do not start a service, if the addressed
* name is not currently active
*/
@ -341,9 +342,11 @@ enum kdbus_payload_type {
* @dst_id: 64-bit ID of the destination connection
* @src_id: 64-bit ID of the source connection
* @payload_type: Payload type (KDBUS_PAYLOAD_*)
* @cookie: Userspace-supplied cookie
* @cookie_reply: For kernel-generated messages, this is the cookie
* the message is a reply to
* @cookie: Userspace-supplied cookie to uniquely identify a
* message, unsually all messages carry this
* @cookie_reply: A reply to the message with the same cookie. The
* reply itself has its own unique cookie, @cookie_reply
* connects the reply to the request message.
* @timeout_ns: For non-kernel-generated messages, this denotes the
* message timeout in nanoseconds. A message has to be
* received with KDBUS_CMD_MSG_RECV by the destination
@ -365,10 +368,8 @@ struct kdbus_msg {
__u64 src_id;
__u64 payload_type;
__u64 cookie;
union {
__u64 cookie_reply;
__u64 timeout_ns;
};
__u64 cookie_reply;
__u64 timeout_ns;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
@ -528,8 +529,9 @@ enum kdbus_name_flags {
* struct kdbus_cmd_name - struct to describe a well-known name
* @size: The total size of the struct
* @flags: Flags for a name entry (KDBUS_NAME_*)
* @owner_id: Privileged users may use this field to (de)register
* names on behalf of other peers.
* @owner_id: The current owner of the name. For requests,
* privileged users may set this field to
* (de)register names on behalf of other connections.
* @conn_flags: The flags of the owning connection (KDBUS_HELLO_*)
* @name: The well-known name
*
@ -630,9 +632,9 @@ struct kdbus_conn_info {
* struct kdbus_cmd_match - struct to add or remove matches
* @size: The total size of the struct
* @owner_id: Privileged users may (de)register matches on behalf
* of other peers. In other cases, set to 0.
* of other peers
* @cookie: Userspace supplied cookie. When removing, the cookie
* identifies the match to remove.
* identifies the match to remove
* @items: A list of items for additional information
*
* This structure is used with the KDBUS_CMD_ADD_MATCH and