#define KDBUS_MATCH_SRC_ID_ANY (~0ULL)
#define KDBUS_DST_ID_BROADCAST (~0ULL)
-/* Common first elements in a structure which are used to iterate over
- * a list of elements. */
-#define KDBUS_PART_HEADER \
- struct { \
- __u64 size; \
- __u64 type; \
- }
-
-/* Message sent from kernel to userspace, when the owner or starter of
- * a well-known name changes */
+/**
+ * struct kdbus_notify_name_change - name registry change message
+ * @old_id: Former owner of a name
+ * @new_id: New owner of a name
+ * @flags: flags from KDBUS_NAME_*
+ * @name: Well-known name
+ *
+ * Data attached to:
+ * KDBUS_ITEM_NAME_ADD
+ * KDBUS_ITEM_NAME_REMOVE
+ * KDBUS_ITEM_NAME_CHANGE
+ *
+ * Sent from kernel to userspace when the owner or starter of
+ * a well-known name changes.
+ */
struct kdbus_notify_name_change {
__u64 old_id;
__u64 new_id;
- __u64 flags; /* 0 or (possibly?) KDBUS_NAME_IN_QUEUE */
+ __u64 flags;
char name[0];
};
+/**
+ * struct kdbus_notify_id_change - name registry change message
+ * @id: New or former owner of the name
+ * @flags: flags field from KDBUS_HELLO_*
+ *
+ * Data attached to:
+ * KDBUS_ITEM_ID_ADD
+ * KDBUS_ITEM_ID_REMOVE
+ *
+ * Sent from kernel to userspace when the owner or starter of
+ * a well-known name changes.
+ */
struct kdbus_notify_id_change {
__u64 id;
- __u64 flags; /* The kernel flags field from KDBUS_HELLO */
+ __u64 flags;
};
+/**
+ * struct kdbus_creds - process credentials
+ * @uid: User ID
+ * @gid: Group ID
+ * @pid: Process ID
+ * @tid: Thread ID
+ * @starttime: Starttime of the process
+ *
+ * The starttime of the process PID. This is useful to detect PID overruns
+ * from the client side. i.e. if you use the PID to look something up in
+ * /proc/$PID/ you can afterwards check the starttime field of it, to ensure
+ * you didn't run into a PID overrun.
+ */
struct kdbus_creds {
__u64 uid;
__u64 gid;
__u64 pid;
__u64 tid;
-
- /* The starttime of the process PID. This is useful to detect
- PID overruns from the client side. i.e. if you use the PID to
- look something up in /proc/$PID/ you can afterwards check the
- starttime field of it to ensure you didn't run into a PID
- ovretun. */
__u64 starttime;
};
/**
* struct kdbus_audit - audit information
- * @sessionid The audit session ID
- * @loginuid The audit login uid
+ * @sessionid: The audit session ID
+ * @loginuid: The audit login uid
*/
struct kdbus_audit {
__u64 sessionid;
/**
* struct kdbus_vec - I/O vector for kdbus payload items
* @size: The size of the vector
- * @address Memory address for memory addresses
- * @offset Offset in the in-message payload memory
+ * @address: Memory address for memory addresses
+ * @offset: Offset in the in-message payload memory
*/
struct kdbus_vec {
__u64 size;
__u32 __pad;
};
+/**
+ * struct kdbus_name - a registered well-known name with its flags
+ * @flags: flags from KDBUS_NAME_*
+ * @name: well-known name
+ */
+struct kdbus_name {
+ __u64 flags;
+ char name[0];
+};
+
+/**
+ * struct kdbus_policy_access - policy access item
+ * @type: One of KDBUS_POLICY_ACCESS_* types
+ * @bits: Access to grant. One of KDBUS_POLICY_*
+ * @id: For KDBUS_POLICY_ACCESS_USER, the uid
+ * For KDBUS_POLICY_ACCESS_GROUP, the gid
+ */
+struct kdbus_policy_access {
+ __u64 type; /* USER, GROUP, WORLD */
+ __u64 bits; /* RECV, SEND, OWN */
+ __u64 id; /* uid, gid, 0 */
+};
+
+/*
+ * struct kdbus_policy - a policy to upload
+ * @size: The total size of the structure
+ * @type: KDBUS_POLICY_NAME or KDBUS_POLICY_ACCESS
+ * @name: The well-known name to grant access to,
+ * if @type is KDBUS_POLICY_NAME
+ * @access: The policy access details,
+ * if @type is KDBUS_POLICY_ACCESS
+ */
+struct kdbus_policy {
+ union {
+ struct kdbus_policy_access access;
+ char name[0];
+ };
+};
+
/* Message Item Types */
enum {
_KDBUS_ITEM_NULL,
/* Filled in by userspace */
- _KDBUS_ITEM_USER_BASE = 1,
- KDBUS_ITEM_PAYLOAD_VEC = 1, /* .data_vec, reference to memory area */
+ _KDBUS_ITEM_USER_BASE,
+ KDBUS_ITEM_PAYLOAD_VEC = _KDBUS_ITEM_USER_BASE,
KDBUS_ITEM_PAYLOAD_OFF, /* .data_vec, reference to memory area */
KDBUS_ITEM_PAYLOAD_MEMFD, /* file descriptor of a special data file */
KDBUS_ITEM_FDS, /* .data_fds of file descriptors */
KDBUS_ITEM_DST_NAME, /* destination's well-known name, in .str */
KDBUS_ITEM_PRIORITY, /* queue priority for message */
+ _KDBUS_ITEM_POLICY_BASE = 0x400,
+ KDBUS_ITEM_POLICY_NAME = _KDBUS_ITEM_POLICY_BASE,
+ KDBUS_ITEM_POLICY_ACCESS,
+
/* Filled in by kernelspace */
- _KDBUS_ITEM_ATTACH_BASE = 0x400,
- KDBUS_ITEM_NAMES = 0x400,/* NUL separated string list with well-known names of source */
+ _KDBUS_ITEM_ATTACH_BASE = 0x600,
+ KDBUS_ITEM_NAME = _KDBUS_ITEM_ATTACH_BASE,
KDBUS_ITEM_STARTER_NAME, /* Only used in HELLO for starter connection */
KDBUS_ITEM_TIMESTAMP, /* .timestamp */
-
- /* when appended to a message, the following items refer to the sender */
KDBUS_ITEM_CREDS, /* .creds */
KDBUS_ITEM_PID_COMM, /* optional, in .str */
KDBUS_ITEM_TID_COMM, /* optional, in .str */
/* Special messages from kernel, consisting of one and only one of these data blocks */
_KDBUS_ITEM_KERNEL_BASE = 0x800,
- KDBUS_ITEM_NAME_ADD = 0x800,/* .name_change */
+ KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
KDBUS_ITEM_NAME_REMOVE, /* .name_change */
KDBUS_ITEM_NAME_CHANGE, /* .name_change */
KDBUS_ITEM_ID_ADD, /* .id_change */
KDBUS_ITEM_REPLY_DEAD, /* dito */
};
-/**
+/*
* struct kdbus_item - chain of data blocks
- * @size : overall data record size
+ * @size: : overall data record size
* @type: kdbus_item type of data
*/
struct kdbus_item {
- KDBUS_PART_HEADER;
+ __u64 size;
+ __u64 type;
union {
/* inline data */
__u8 data[0];
struct kdbus_creds creds;
struct kdbus_audit audit;
struct kdbus_timestamp timestamp;
+ struct kdbus_name name;
/* specific fields */
struct kdbus_memfd memfd;
int fds[0];
struct kdbus_notify_name_change name_change;
struct kdbus_notify_id_change id_change;
+ struct kdbus_policy policy;
};
};
struct kdbus_item items[0];
};
-enum {
- _KDBUS_POLICY_NULL,
- KDBUS_POLICY_NAME,
- KDBUS_POLICY_ACCESS,
-};
-
enum {
_KDBUS_POLICY_ACCESS_NULL,
KDBUS_POLICY_ACCESS_USER,
KDBUS_POLICY_OWN = 1 << 0,
};
-/**
- * struct kdbus_policy_access - policy access item
- * @type: One of KDBUS_POLICY_ACCESS_* types
- * @bits: Access to grant. One of KDBUS_POLICY_*
- * @id: For KDBUS_POLICY_ACCESS_USER, the uid
- * For KDBUS_POLICY_ACCESS_GROUP, the gid
- */
-struct kdbus_policy_access {
- __u64 type; /* USER, GROUP, WORLD */
- __u64 bits; /* RECV, SEND, OWN */
- __u64 id; /* uid, gid, 0 */
-};
-
-/**
- * struct kdbus_policy - a policy to upload
- * @size: The total size of the structure
- * @type: KDBUS_POLICY_NAME or KDBUS_POLICY_ACCESS
- * @name: The well-known name to grant access to,
- * if @type is KDBUS_POLICY_NAME
- * @access: The policy access details,
- * if @type is KDBUS_POLICY_ACCESS
- */
-struct kdbus_policy {
- KDBUS_PART_HEADER;
- union {
- char name[0];
- struct kdbus_policy_access access;
- };
-};
-
/**
* struct kdbus_cmd_policy - a series of policies to upload
* @size: The total size of the structure
*/
struct kdbus_cmd_policy {
__u64 size;
- struct kdbus_policy policies[0];
+ struct kdbus_item policies[0];
};
/* Flags for struct kdbus_cmd_hello */
* KDBUS_CMD_BUS_MAKE ioctl. It's intended to be useful
* to do negotiation of features of the payload that is
* transferred (kernel → userspace)
- * @id: The id of this connection (kernel → userspace)
+ * @id: The ID of this connection (kernel → userspace)
* @bloom_size: The bloom filter size chosen by the owner
* (kernel → userspace)
* @pool_size: Maximum size of the pool buffer (kernel → userspace)
* @id128: Unique 128-bit ID of the bus (kernel → userspace)
- * @items; A list of items
+ * @items: A list of items
*
* This struct is used with the KDBUS_CMD_HELLO ioctl. See the ioctl
* documentation for more information.
enum {
_KDBUS_MAKE_NULL,
KDBUS_MAKE_NAME,
- KDBUS_MAKE_CRED,/* allow translator services which connect
- * to the bus on behalf of somebody else,
- * allow specifying the credentials of the
- * client to connect on behalf on. Needs
- * privileges */
};
/**
* struct kdbus_cmd_bus_make - struct to make a bus
* @size: The total size of the struct
- * @flags: FIXME
- * @bus_flags:
- * @bloom_filter: Size of the bloom filter for this bus
+ * @flags: Properties for the bus to create
+ * @bloom_size: Size of the bloom filter for this bus
* @items: Items describing details such as the name of the bus
*
* This structure is used with the KDBUS_CMD_BUS_MAKE ioctl. Refer to the
struct kdbus_cmd_bus_make {
__u64 size;
__u64 flags;
- __u64 bus_flags;
__u64 bloom_size;
struct kdbus_item items[0];
};
/**
* struct kdbus_cmd_conn_info - struct used for KDBUS_CMD_CONN_INFO ioctl
* @size: The total size of the struct
- * @flags: Query flags, currently unused
+ * @flags: KDBUS_ATTACH_* flags
* @id: The 64-bit ID of the connection. If set to zero, passing
* @name is required. kdbus will look up the name to determine
* the ID in this case.
* kdbus_name_info struct result is stored. The user must
* use KDBUS_CMD_FREE to free the allocated memory.
* @name: The optional well-known name to look up. Only needed in
- * case @if is zero.
+ * case @id is zero.
*
* On success, the KDBUS_CMD_CONN_INFO ioctl will return 0 and @offset will
* tell the user the offset in the connection pool buffer at which to find the
enum {
_KDBUS_MATCH_NULL,
KDBUS_MATCH_BLOOM, /* Matches a mask blob against KDBUS_MSG_BLOOM */
- KDBUS_MATCH_SRC_NAME, /* Matches a name string against KDBUS_MSG_SRC_NAMES */
- KDBUS_MATCH_NAME_ADD, /* Matches a name string against KDBUS_MSG_NAME_ADD */
- KDBUS_MATCH_NAME_REMOVE, /* Matches a name string against KDBUS_MSG_NAME_REMOVE */
- KDBUS_MATCH_NAME_CHANGE, /* Matches a name string against KDBUS_MSG_NAME_CHANGE */
+ KDBUS_MATCH_SRC_NAME, /* Matches a name string against KDBUS_ITEM_NAME */
+ KDBUS_MATCH_NAME_ADD, /* Matches a name string against KDBUS_ITEM_NAME_ADD */
+ KDBUS_MATCH_NAME_REMOVE, /* Matches a name string against KDBUS_ITEM_NAME_REMOVE */
+ KDBUS_MATCH_NAME_CHANGE, /* Matches a name string against KDBUS_ITEM_NAME_CHANGE */
KDBUS_MATCH_ID_ADD, /* Matches an ID against KDBUS_MSG_ID_ADD */
KDBUS_MATCH_ID_REMOVE, /* Matches an ID against KDBUS_MSG_ID_REMOVE */
};