--- /dev/null
+/*
+ * kdbus is free software; you can redistribute it and/or modify it under
+ * 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.
+ */
+
+#ifndef _UAPI_KDBUS_H_
+#define _UAPI_KDBUS_H_
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define KDBUS_IOCTL_MAGIC 0x95
+#define KDBUS_SRC_ID_KERNEL (0)
+#define KDBUS_DST_ID_NAME (0)
+#define KDBUS_MATCH_ID_ANY (~0ULL)
+#define KDBUS_DST_ID_BROADCAST (~0ULL)
+#define KDBUS_FLAG_NEGOTIATE (1ULL << 63)
+
+/**
+ * struct kdbus_notify_id_change - name registry change message
+ * @id: New or former owner of the name
+ * @flags: flags field from KDBUS_HELLO_*
+ *
+ * Sent from kernel to userspace when the owner or activator of
+ * a well-known name changes.
+ *
+ * Attached to:
+ * KDBUS_ITEM_ID_ADD
+ * KDBUS_ITEM_ID_REMOVE
+ */
+struct kdbus_notify_id_change {
+ __u64 id;
+ __u64 flags;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_notify_name_change - name registry change message
+ * @old_id: ID and flags of former owner of a name
+ * @new_id: ID and flags of new owner of a name
+ * @name: Well-known name
+ *
+ * Sent from kernel to userspace when the owner or activator of
+ * a well-known name changes.
+ *
+ * Attached to:
+ * KDBUS_ITEM_NAME_ADD
+ * KDBUS_ITEM_NAME_REMOVE
+ * KDBUS_ITEM_NAME_CHANGE
+ */
+struct kdbus_notify_name_change {
+ struct kdbus_notify_id_change old_id;
+ struct kdbus_notify_id_change new_id;
+ char name[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_creds - process credentials
+ * @uid: User ID
+ * @euid: Effective UID
+ * @suid: Saved UID
+ * @fsuid: Filesystem UID
+ * @gid: Group ID
+ * @egid: Effective GID
+ * @sgid: Saved GID
+ * @fsgid: Filesystem GID
+ *
+ * Attached to:
+ * KDBUS_ITEM_CREDS
+ */
+struct kdbus_creds {
+ __u64 uid;
+ __u64 euid;
+ __u64 suid;
+ __u64 fsuid;
+ __u64 gid;
+ __u64 egid;
+ __u64 sgid;
+ __u64 fsgid;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_pids - process identifiers
+ * @pid: Process ID
+ * @tid: Thread ID
+ * @ppid: Parent process ID
+ *
+ * The PID and TID of a process.
+ *
+ * Attached to:
+ * KDBUS_ITEM_PIDS
+ */
+struct kdbus_pids {
+ __u64 pid;
+ __u64 tid;
+ __u64 ppid;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_caps - process capabilities
+ * @last_cap: Highest currently known capability bit
+ * @caps: Variable number of 32-bit capabilities flags
+ *
+ * Contains a variable number of 32-bit capabilities flags.
+ *
+ * Attached to:
+ * KDBUS_ITEM_CAPS
+ */
+struct kdbus_caps {
+ __u32 last_cap;
+ __u32 caps[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_audit - audit information
+ * @sessionid: The audit session ID
+ * @loginuid: The audit login uid
+ *
+ * Attached to:
+ * KDBUS_ITEM_AUDIT
+ */
+struct kdbus_audit {
+ __u32 sessionid;
+ __u32 loginuid;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_timestamp
+ * @seqnum: Global per-domain message sequence number
+ * @monotonic_ns: Monotonic timestamp, in nanoseconds
+ * @realtime_ns: Realtime timestamp, in nanoseconds
+ *
+ * Attached to:
+ * KDBUS_ITEM_TIMESTAMP
+ */
+struct kdbus_timestamp {
+ __u64 seqnum;
+ __u64 monotonic_ns;
+ __u64 realtime_ns;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_vec - I/O vector for kdbus payload items
+ * @size: The size of the vector
+ * @address: Memory address of data buffer
+ * @offset: Offset in the in-message payload memory,
+ * relative to the message head
+ *
+ * Attached to:
+ * KDBUS_ITEM_PAYLOAD_VEC, KDBUS_ITEM_PAYLOAD_OFF
+ */
+struct kdbus_vec {
+ __u64 size;
+ union {
+ __u64 address;
+ __u64 offset;
+ };
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_bloom_parameter - bus-wide bloom parameters
+ * @size: Size of the bit field in bytes (m / 8)
+ * @n_hash: Number of hash functions used (k)
+ */
+struct kdbus_bloom_parameter {
+ __u64 size;
+ __u64 n_hash;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_bloom_filter - bloom filter containing n elements
+ * @generation: Generation of the element set in the filter
+ * @data: Bit field, multiple of 8 bytes
+ */
+struct kdbus_bloom_filter {
+ __u64 generation;
+ __u64 data[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_memfd - a kdbus memfd
+ * @start: The offset into the memfd where the segment starts
+ * @size: The size of the memfd segment
+ * @fd: The file descriptor number
+ * @__pad: Padding to ensure proper alignment and size
+ *
+ * Attached to:
+ * KDBUS_ITEM_PAYLOAD_MEMFD
+ */
+struct kdbus_memfd {
+ __u64 start;
+ __u64 size;
+ int fd;
+ __u32 __pad;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_name - a registered well-known name with its flags
+ * @flags: Flags from KDBUS_NAME_*
+ * @name: Well-known name
+ *
+ * Attached to:
+ * KDBUS_ITEM_OWNED_NAME
+ */
+struct kdbus_name {
+ __u64 flags;
+ char name[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_policy_access_type - permissions of a policy record
+ * @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
+ * @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
+ * @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
+ * @KDBUS_POLICY_ACCESS_WORLD: World-accessible
+ */
+enum kdbus_policy_access_type {
+ _KDBUS_POLICY_ACCESS_NULL,
+ KDBUS_POLICY_ACCESS_USER,
+ KDBUS_POLICY_ACCESS_GROUP,
+ KDBUS_POLICY_ACCESS_WORLD,
+};
+
+/**
+ * enum kdbus_policy_access_flags - mode flags
+ * @KDBUS_POLICY_OWN: Allow to own a well-known name
+ * Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE
+ * @KDBUS_POLICY_TALK: Allow communication to a well-known name
+ * Implies KDBUS_POLICY_SEE
+ * @KDBUS_POLICY_SEE: Allow to see a well-known name
+ */
+enum kdbus_policy_type {
+ KDBUS_POLICY_SEE = 0,
+ KDBUS_POLICY_TALK,
+ KDBUS_POLICY_OWN,
+};
+
+/**
+ * struct kdbus_policy_access - policy access item
+ * @type: One of KDBUS_POLICY_ACCESS_* types
+ * @access: Access to grant
+ * @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 access; /* OWN, TALK, SEE */
+ __u64 id; /* uid, gid, 0 */
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_attach_flags - flags for metadata attachments
+ * @KDBUS_ATTACH_TIMESTAMP: Timestamp
+ * @KDBUS_ATTACH_CREDS: Credentials
+ * @KDBUS_ATTACH_PIDS: PIDs
+ * @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
+ * @KDBUS_ATTACH_NAMES: Well-known names
+ * @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID
+ * @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID
+ * @KDBUS_ATTACH_EXE: The path of the executable
+ * @KDBUS_ATTACH_CMDLINE: The process command line
+ * @KDBUS_ATTACH_CGROUP: The croup membership
+ * @KDBUS_ATTACH_CAPS: The process capabilities
+ * @KDBUS_ATTACH_SECLABEL: The security label
+ * @KDBUS_ATTACH_AUDIT: The audit IDs
+ * @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name
+ * @_KDBUS_ATTACH_ALL: All of the above
+ * @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of
+ * metatdata.
+ */
+enum kdbus_attach_flags {
+ KDBUS_ATTACH_TIMESTAMP = 1ULL << 0,
+ KDBUS_ATTACH_CREDS = 1ULL << 1,
+ KDBUS_ATTACH_PIDS = 1ULL << 2,
+ KDBUS_ATTACH_AUXGROUPS = 1ULL << 3,
+ KDBUS_ATTACH_NAMES = 1ULL << 4,
+ KDBUS_ATTACH_TID_COMM = 1ULL << 5,
+ KDBUS_ATTACH_PID_COMM = 1ULL << 6,
+ KDBUS_ATTACH_EXE = 1ULL << 7,
+ KDBUS_ATTACH_CMDLINE = 1ULL << 8,
+ KDBUS_ATTACH_CGROUP = 1ULL << 9,
+ KDBUS_ATTACH_CAPS = 1ULL << 10,
+ KDBUS_ATTACH_SECLABEL = 1ULL << 11,
+ KDBUS_ATTACH_AUDIT = 1ULL << 12,
+ KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13,
+ _KDBUS_ATTACH_ALL = (1ULL << 14) - 1,
+ _KDBUS_ATTACH_ANY = ~0ULL
+};
+
+/**
+ * enum kdbus_item_type - item types to chain data in a list
+ * @_KDBUS_ITEM_NULL: Uninitialized/invalid
+ * @_KDBUS_ITEM_USER_BASE: Start of user items
+ * @KDBUS_ITEM_NEGOTIATE: Negotiate supported items
+ * @KDBUS_ITEM_PAYLOAD_VEC: Vector to data
+ * @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head
+ * @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd
+ * @KDBUS_ITEM_FDS: Attached file descriptors
+ * @KDBUS_ITEM_CANCEL_FD: FD used to cancel a synchronous
+ * operation by writing to it from
+ * userspace
+ * @KDBUS_ITEM_BLOOM_PARAMETER: Bus-wide bloom parameters, used with
+ * KDBUS_CMD_BUS_MAKE, carries a
+ * struct kdbus_bloom_parameter
+ * @KDBUS_ITEM_BLOOM_FILTER: Bloom filter carried with a message,
+ * used to match against a bloom mask of a
+ * connection, carries a struct
+ * kdbus_bloom_filter
+ * @KDBUS_ITEM_BLOOM_MASK: Bloom mask used to match against a
+ * message'sbloom filter
+ * @KDBUS_ITEM_DST_NAME: Destination's well-known name
+ * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint
+ * @KDBUS_ITEM_ATTACH_FLAGS_SEND: Attach-flags, used for updating which
+ * metadata a connection opts in to send
+ * @KDBUS_ITEM_ATTACH_FLAGS_RECV: Attach-flags, used for updating which
+ * metadata a connection requests to
+ * receive for each reeceived message
+ * @KDBUS_ITEM_ID: Connection ID
+ * @KDBUS_ITEM_NAME: Well-know name with flags
+ * @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items
+ * @KDBUS_ITEM_TIMESTAMP: Timestamp
+ * @KDBUS_ITEM_CREDS: Process credentials
+ * @KDBUS_ITEM_PIDS: Process identifiers
+ * @KDBUS_ITEM_AUXGROUPS: Auxiliary process groups
+ * @KDBUS_ITEM_OWNED_NAME: A name owned by the associated
+ * connection
+ * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_EXE: The path of the executable
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_CMDLINE: The process command line
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_CGROUP: The croup membership
+ * @KDBUS_ITEM_CAPS: The process capabilities
+ * @KDBUS_ITEM_SECLABEL: The security label
+ * @KDBUS_ITEM_AUDIT: The audit IDs
+ * @KDBUS_ITEM_CONN_DESCRIPTION: The connection's human-readable name
+ * (debugging)
+ * @_KDBUS_ITEM_POLICY_BASE: Start of policy items
+ * @KDBUS_ITEM_POLICY_ACCESS: Policy access block
+ * @_KDBUS_ITEM_KERNEL_BASE: Start of kernel-generated message items
+ * @KDBUS_ITEM_NAME_ADD: Notification in kdbus_notify_name_change
+ * @KDBUS_ITEM_NAME_REMOVE: Notification in kdbus_notify_name_change
+ * @KDBUS_ITEM_NAME_CHANGE: Notification in kdbus_notify_name_change
+ * @KDBUS_ITEM_ID_ADD: Notification in kdbus_notify_id_change
+ * @KDBUS_ITEM_ID_REMOVE: Notification in kdbus_notify_id_change
+ * @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached
+ * @KDBUS_ITEM_REPLY_DEAD: Destination died
+ *
+ * N.B: The process and thread COMM fields, as well as the CMDLINE and
+ * EXE fields may be altered by unprivileged processes und should
+ * hence *not* used for security decisions. Peers should make use of
+ * these items only for informational purposes, such as generating log
+ * records.
+ */
+enum kdbus_item_type {
+ _KDBUS_ITEM_NULL,
+ _KDBUS_ITEM_USER_BASE,
+ KDBUS_ITEM_NEGOTIATE = _KDBUS_ITEM_USER_BASE,
+ KDBUS_ITEM_PAYLOAD_VEC,
+ KDBUS_ITEM_PAYLOAD_OFF,
+ KDBUS_ITEM_PAYLOAD_MEMFD,
+ KDBUS_ITEM_FDS,
+ KDBUS_ITEM_CANCEL_FD,
+ KDBUS_ITEM_BLOOM_PARAMETER,
+ KDBUS_ITEM_BLOOM_FILTER,
+ KDBUS_ITEM_BLOOM_MASK,
+ KDBUS_ITEM_DST_NAME,
+ KDBUS_ITEM_MAKE_NAME,
+ KDBUS_ITEM_ATTACH_FLAGS_SEND,
+ KDBUS_ITEM_ATTACH_FLAGS_RECV,
+ KDBUS_ITEM_ID,
+ KDBUS_ITEM_NAME,
+ KDBUS_ITEM_DST_ID,
+
+ /* keep these item types in sync with KDBUS_ATTACH_* flags */
+ _KDBUS_ITEM_ATTACH_BASE = 0x1000,
+ KDBUS_ITEM_TIMESTAMP = _KDBUS_ITEM_ATTACH_BASE,
+ KDBUS_ITEM_CREDS,
+ KDBUS_ITEM_PIDS,
+ KDBUS_ITEM_AUXGROUPS,
+ KDBUS_ITEM_OWNED_NAME,
+ KDBUS_ITEM_TID_COMM,
+ KDBUS_ITEM_PID_COMM,
+ KDBUS_ITEM_EXE,
+ KDBUS_ITEM_CMDLINE,
+ KDBUS_ITEM_CGROUP,
+ KDBUS_ITEM_CAPS,
+ KDBUS_ITEM_SECLABEL,
+ KDBUS_ITEM_AUDIT,
+ KDBUS_ITEM_CONN_DESCRIPTION,
+
+ _KDBUS_ITEM_POLICY_BASE = 0x2000,
+ KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE,
+
+ _KDBUS_ITEM_KERNEL_BASE = 0x8000,
+ KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
+ KDBUS_ITEM_NAME_REMOVE,
+ KDBUS_ITEM_NAME_CHANGE,
+ KDBUS_ITEM_ID_ADD,
+ KDBUS_ITEM_ID_REMOVE,
+ KDBUS_ITEM_REPLY_TIMEOUT,
+ KDBUS_ITEM_REPLY_DEAD,
+};
+
+/**
+ * struct kdbus_item - chain of data blocks
+ * @size: Overall data record size
+ * @type: Kdbus_item type of data
+ * @data: Generic bytes
+ * @data32: Generic 32 bit array
+ * @data64: Generic 64 bit array
+ * @str: Generic string
+ * @id: Connection ID
+ * @vec: KDBUS_ITEM_PAYLOAD_VEC
+ * @creds: KDBUS_ITEM_CREDS
+ * @audit: KDBUS_ITEM_AUDIT
+ * @timestamp: KDBUS_ITEM_TIMESTAMP
+ * @name: KDBUS_ITEM_NAME
+ * @bloom_parameter: KDBUS_ITEM_BLOOM_PARAMETER
+ * @bloom_filter: KDBUS_ITEM_BLOOM_FILTER
+ * @memfd: KDBUS_ITEM_PAYLOAD_MEMFD
+ * @name_change: KDBUS_ITEM_NAME_ADD
+ * KDBUS_ITEM_NAME_REMOVE
+ * KDBUS_ITEM_NAME_CHANGE
+ * @id_change: KDBUS_ITEM_ID_ADD
+ * KDBUS_ITEM_ID_REMOVE
+ * @policy: KDBUS_ITEM_POLICY_ACCESS
+ */
+struct kdbus_item {
+ __u64 size;
+ __u64 type;
+ union {
+ __u8 data[0];
+ __u32 data32[0];
+ __u64 data64[0];
+ char str[0];
+
+ __u64 id;
+ struct kdbus_vec vec;
+ struct kdbus_creds creds;
+ struct kdbus_pids pids;
+ struct kdbus_audit audit;
+ struct kdbus_caps caps;
+ struct kdbus_timestamp timestamp;
+ struct kdbus_name name;
+ struct kdbus_bloom_parameter bloom_parameter;
+ struct kdbus_bloom_filter bloom_filter;
+ struct kdbus_memfd memfd;
+ int fds[0];
+ struct kdbus_notify_name_change name_change;
+ struct kdbus_notify_id_change id_change;
+ struct kdbus_policy_access policy_access;
+ };
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_msg_flags - type of message
+ * @KDBUS_MSG_EXPECT_REPLY: Expect a reply message, used for
+ * method calls. The userspace-supplied
+ * cookie identifies the message and the
+ * respective reply carries the cookie
+ * in cookie_reply
+ * @KDBUS_MSG_NO_AUTO_START: Do not start a service if the addressed
+ * name is not currently active. This flag is
+ * not looked at by the kernel but only
+ * serves as hint for userspace implementations.
+ * @KDBUS_MSG_SIGNAL: Treat this message as signal
+ */
+enum kdbus_msg_flags {
+ KDBUS_MSG_EXPECT_REPLY = 1ULL << 0,
+ KDBUS_MSG_NO_AUTO_START = 1ULL << 1,
+ KDBUS_MSG_SIGNAL = 1ULL << 2,
+};
+
+/**
+ * enum kdbus_payload_type - type of payload carried by message
+ * @KDBUS_PAYLOAD_KERNEL: Kernel-generated simple message
+ * @KDBUS_PAYLOAD_DBUS: D-Bus marshalling "DBusDBus"
+ *
+ * Any payload-type is accepted. Common types will get added here once
+ * established.
+ */
+enum kdbus_payload_type {
+ KDBUS_PAYLOAD_KERNEL,
+ KDBUS_PAYLOAD_DBUS = 0x4442757344427573ULL,
+};
+
+/**
+ * struct kdbus_msg - the representation of a kdbus message
+ * @size: Total size of the message
+ * @flags: Message flags (KDBUS_MSG_*), userspace → kernel
+ * @priority: Message queue priority value
+ * @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, for the connection
+ * to identify its messages
+ * @timeout_ns: The time to wait for a message reply from the peer.
+ * If there is no reply, and the send command is
+ * executed asynchronously, a kernel-generated message
+ * with an attached KDBUS_ITEM_REPLY_TIMEOUT item
+ * is sent to @src_id. For synchronously executed send
+ * command, the value denotes the maximum time the call
+ * blocks to wait for a reply. The timeout is expected in
+ * nanoseconds and as absolute CLOCK_MONOTONIC value.
+ * @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
+ * @items: A list of kdbus_items containing the message payload
+ */
+struct kdbus_msg {
+ __u64 size;
+ __u64 flags;
+ __s64 priority;
+ __u64 dst_id;
+ __u64 src_id;
+ __u64 payload_type;
+ __u64 cookie;
+ union {
+ __u64 timeout_ns;
+ __u64 cookie_reply;
+ };
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_msg_info - returned message container
+ * @offset: Offset of kdbus_msg slice in pool
+ * @msg_size: Copy of the kdbus_msg.size field
+ * @return_flags: Command return flags, kernel → userspace
+ */
+struct kdbus_msg_info {
+ __u64 offset;
+ __u64 msg_size;
+ __u64 return_flags;
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_send_flags - flags for sending messages
+ * @KDBUS_SEND_SYNC_REPLY: Wait for destination connection to
+ * reply to this message. The
+ * KDBUS_CMD_SEND ioctl() will block
+ * until the reply is received, and
+ * reply in struct kdbus_cmd_send will
+ * yield the offset in the sender's pool
+ * where the reply can be found.
+ * This flag is only valid if
+ * @KDBUS_MSG_EXPECT_REPLY is set as well.
+ */
+enum kdbus_send_flags {
+ KDBUS_SEND_SYNC_REPLY = 1ULL << 0,
+};
+
+/**
+ * struct kdbus_cmd_send - send message
+ * @size: Overall size of this structure
+ * @flags: Flags to change send behavior (KDBUS_SEND_*)
+ * @return_flags: Command return flags, kernel → userspace
+ * @msg_address: Storage address of the kdbus_msg to send
+ * @reply: Storage for message reply if KDBUS_SEND_SYNC_REPLY
+ * was given
+ * @items: Additional items for this command
+ */
+struct kdbus_cmd_send {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 msg_address;
+ struct kdbus_msg_info reply;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_recv_flags - flags for de-queuing messages
+ * @KDBUS_RECV_PEEK: Return the next queued message without
+ * actually de-queuing it, and without installing
+ * any file descriptors or other resources. It is
+ * usually used to determine the activating
+ * connection of a bus name.
+ * @KDBUS_RECV_DROP: Drop and free the next queued message and all
+ * its resources without actually receiving it.
+ * @KDBUS_RECV_USE_PRIORITY: Only de-queue messages with the specified or
+ * higher priority (lowest values); if not set,
+ * the priority value is ignored.
+ */
+enum kdbus_recv_flags {
+ KDBUS_RECV_PEEK = 1ULL << 0,
+ KDBUS_RECV_DROP = 1ULL << 1,
+ KDBUS_RECV_USE_PRIORITY = 1ULL << 2,
+};
+
+/**
+ * enum kdbus_recv_return_flags - return flags for message receive commands
+ * @KDBUS_RECV_RETURN_INCOMPLETE_FDS: One or more file descriptors could not
+ * be installed. These descriptors in
+ * KDBUS_ITEM_FDS will carry the value -1.
+ * @KDBUS_RECV_RETURN_DROPPED_MSGS: There have been dropped messages since
+ * the last time a message was received.
+ * The 'dropped_msgs' counter contains the
+ * number of messages dropped pool
+ * overflows or other missed broadcasts.
+ */
+enum kdbus_recv_return_flags {
+ KDBUS_RECV_RETURN_INCOMPLETE_FDS = 1ULL << 0,
+ KDBUS_RECV_RETURN_DROPPED_MSGS = 1ULL << 1,
+};
+
+/**
+ * struct kdbus_cmd_recv - struct to de-queue a buffered message
+ * @size: Overall size of this object
+ * @flags: KDBUS_RECV_* flags, userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @priority: Minimum priority of the messages to de-queue. Lowest
+ * values have the highest priority.
+ * @dropped_msgs: In case there were any dropped messages since the last
+ * time a message was received, this will be set to the
+ * number of lost messages and
+ * KDBUS_RECV_RETURN_DROPPED_MSGS will be set in
+ * 'return_flags'. This can only happen if the ioctl
+ * returns 0 or EAGAIN.
+ * @msg: Return storage for received message.
+ * @items: Additional items for this command.
+ *
+ * This struct is used with the KDBUS_CMD_RECV ioctl.
+ */
+struct kdbus_cmd_recv {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __s64 priority;
+ __u64 dropped_msgs;
+ struct kdbus_msg_info msg;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_cmd_free - struct to free a slice of memory in the pool
+ * @size: Overall size of this structure
+ * @flags: Flags for the free command, userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @offset: The offset of the memory slice, as returned by other
+ * ioctls
+ * @items: Additional items to modify the behavior
+ *
+ * This struct is used with the KDBUS_CMD_FREE ioctl.
+ */
+struct kdbus_cmd_free {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 offset;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
+ * @KDBUS_HELLO_ACCEPT_FD: The connection allows the reception of
+ * any passed file descriptors
+ * @KDBUS_HELLO_ACTIVATOR: Special-purpose connection which registers
+ * a well-know name for a process to be started
+ * when traffic arrives
+ * @KDBUS_HELLO_POLICY_HOLDER: Special-purpose connection which registers
+ * policy entries for a name. The provided name
+ * is not activated and not registered with the
+ * name database, it only allows unprivileged
+ * connections to acquire a name, talk or discover
+ * a service
+ * @KDBUS_HELLO_MONITOR: Special-purpose connection to monitor
+ * bus traffic
+ */
+enum kdbus_hello_flags {
+ KDBUS_HELLO_ACCEPT_FD = 1ULL << 0,
+ KDBUS_HELLO_ACTIVATOR = 1ULL << 1,
+ KDBUS_HELLO_POLICY_HOLDER = 1ULL << 2,
+ KDBUS_HELLO_MONITOR = 1ULL << 3,
+};
+
+/**
+ * struct kdbus_cmd_hello - struct to say hello to kdbus
+ * @size: The total size of the structure
+ * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @attach_flags_send: Mask of metadata to attach to each message sent
+ * off by this connection (KDBUS_ATTACH_*)
+ * @attach_flags_recv: Mask of metadata to attach to each message receieved
+ * by the new connection (KDBUS_ATTACH_*)
+ * @bus_flags: The flags field copied verbatim from the original
+ * 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)
+ * @pool_size: Size of the connection's buffer where the received
+ * messages are placed
+ * @offset: Pool offset where items are returned to report
+ * additional information about the bus and the newly
+ * created connection.
+ * @items_size: Size of buffer returned in the pool slice at @offset.
+ * @id128: Unique 128-bit ID of the bus (kernel → userspace)
+ * @items: A list of items
+ *
+ * This struct is used with the KDBUS_CMD_HELLO ioctl.
+ */
+struct kdbus_cmd_hello {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 attach_flags_send;
+ __u64 attach_flags_recv;
+ __u64 bus_flags;
+ __u64 id;
+ __u64 pool_size;
+ __u64 offset;
+ __u64 items_size;
+ __u8 id128[16];
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_info - connection information
+ * @size: total size of the struct
+ * @id: 64bit object ID
+ * @flags: object creation flags
+ * @items: list of items
+ *
+ * Note that the user is responsible for freeing the allocated memory with
+ * the KDBUS_CMD_FREE ioctl.
+ */
+struct kdbus_info {
+ __u64 size;
+ __u64 id;
+ __u64 flags;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_list_flags - what to include into the returned list
+ * @KDBUS_LIST_UNIQUE: active connections
+ * @KDBUS_LIST_ACTIVATORS: activator connections
+ * @KDBUS_LIST_NAMES: known well-known names
+ * @KDBUS_LIST_QUEUED: queued-up names
+ */
+enum kdbus_list_flags {
+ KDBUS_LIST_UNIQUE = 1ULL << 0,
+ KDBUS_LIST_NAMES = 1ULL << 1,
+ KDBUS_LIST_ACTIVATORS = 1ULL << 2,
+ KDBUS_LIST_QUEUED = 1ULL << 3,
+};
+
+/**
+ * struct kdbus_cmd_list - list connections
+ * @size: overall size of this object
+ * @flags: flags for the query (KDBUS_LIST_*), userspace → kernel
+ * @return_flags: command return flags, kernel → userspace
+ * @offset: Offset in the caller's pool buffer where an array of
+ * kdbus_info objects is stored.
+ * The user must use KDBUS_CMD_FREE to free the
+ * allocated memory.
+ * @list_size: size of returned list in bytes
+ * @items: Items for the command. Reserved for future use.
+ *
+ * This structure is used with the KDBUS_CMD_LIST ioctl.
+ */
+struct kdbus_cmd_list {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 offset;
+ __u64 list_size;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl
+ * @size: The total size of the struct
+ * @flags: Flags for this ioctl, userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @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.
+ * @attach_flags: Set of attach flags to specify the set of information
+ * to receive, userspace → kernel
+ * @offset: Returned offset in the caller's pool buffer where the
+ * kdbus_info struct result is stored. The user must
+ * use KDBUS_CMD_FREE to free the allocated memory.
+ * @info_size: Output buffer to report size of data at @offset.
+ * @items: The optional item list, containing the
+ * well-known name to look up as a KDBUS_ITEM_NAME.
+ * Only needed in 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
+ * result in a struct kdbus_info.
+ */
+struct kdbus_cmd_info {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 id;
+ __u64 attach_flags;
+ __u64 offset;
+ __u64 info_size;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_cmd_match_flags - flags to control the KDBUS_CMD_MATCH_ADD ioctl
+ * @KDBUS_MATCH_REPLACE: If entries with the supplied cookie already
+ * exists, remove them before installing the new
+ * matches.
+ */
+enum kdbus_cmd_match_flags {
+ KDBUS_MATCH_REPLACE = 1ULL << 0,
+};
+
+/**
+ * struct kdbus_cmd_match - struct to add or remove matches
+ * @size: The total size of the struct
+ * @flags: Flags for match command (KDBUS_MATCH_*),
+ * userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @cookie: Userspace supplied cookie. When removing, the cookie
+ * identifies the match to remove
+ * @items: A list of items for additional information
+ *
+ * This structure is used with the KDBUS_CMD_MATCH_ADD and
+ * KDBUS_CMD_MATCH_REMOVE ioctl.
+ */
+struct kdbus_cmd_match {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 cookie;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,ENDPOINT}_MAKE
+ * @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible
+ * @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible
+ */
+enum kdbus_make_flags {
+ KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
+ KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
+};
+
+/**
+ * enum kdbus_name_flags - flags for KDBUS_CMD_NAME_ACQUIRE
+ * @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
+ * @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
+ * @KDBUS_NAME_QUEUE: Name should be queued if busy
+ * @KDBUS_NAME_IN_QUEUE: Name is queued
+ * @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
+ * @KDBUS_NAME_PRIMARY: Primary owner of the name
+ * @KDBUS_NAME_ACQUIRED: Name was acquired/queued _now_
+ */
+enum kdbus_name_flags {
+ KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
+ KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
+ KDBUS_NAME_QUEUE = 1ULL << 2,
+ KDBUS_NAME_IN_QUEUE = 1ULL << 3,
+ KDBUS_NAME_ACTIVATOR = 1ULL << 4,
+ KDBUS_NAME_PRIMARY = 1ULL << 5,
+ KDBUS_NAME_ACQUIRED = 1ULL << 6,
+};
+
+/**
+ * struct kdbus_cmd - generic ioctl payload
+ * @size: Overall size of this structure
+ * @flags: Flags for this ioctl, userspace → kernel
+ * @return_flags: Ioctl return flags, kernel → userspace
+ * @items: Additional items to modify the behavior
+ *
+ * This is a generic ioctl payload object. It's used by all ioctls that only
+ * take flags and items as input.
+ */
+struct kdbus_cmd {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * Ioctl API
+ *
+ * KDBUS_CMD_BUS_MAKE: After opening the "control" node, this command
+ * creates a new bus with the specified
+ * name. The bus is immediately shut down and
+ * cleaned up when the opened file descriptor is
+ * closed.
+ *
+ * KDBUS_CMD_ENDPOINT_MAKE: Creates a new named special endpoint to talk to
+ * the bus. Such endpoints usually carry a more
+ * restrictive policy and grant restricted access
+ * to specific applications.
+ * KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
+ * to update the policy.
+ *
+ * KDBUS_CMD_HELLO: By opening the bus node, a connection is
+ * created. After a HELLO the opened connection
+ * becomes an active peer on the bus.
+ * KDBUS_CMD_UPDATE: Update the properties of a connection. Used to
+ * update the metadata subscription mask and
+ * policy.
+ * KDBUS_CMD_BYEBYE: Disconnect a connection. If there are no
+ * messages queued up in the connection's pool,
+ * the call succeeds, and the handle is rendered
+ * unusable. Otherwise, -EBUSY is returned without
+ * any further side-effects.
+ * KDBUS_CMD_FREE: Release the allocated memory in the receiver's
+ * pool.
+ * KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the
+ * initial creator of the connection. The data was
+ * stored at registration time and does not
+ * necessarily represent the connected process or
+ * the actual state of the process.
+ * KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus
+ * a connection is attached to.
+ *
+ * KDBUS_CMD_SEND: Send a message and pass data from userspace to
+ * the kernel.
+ * KDBUS_CMD_RECV: Receive a message from the kernel which is
+ * placed in the receiver's pool.
+ *
+ * KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
+ * the connection. Well-known names are used to
+ * address a peer on the bus.
+ * KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
+ * currently owns.
+ * KDBUS_CMD_LIST: Retrieve the list of all currently registered
+ * well-known and unique names.
+ *
+ * KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
+ * be delivered to the connection.
+ * KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages.
+ */
+enum kdbus_ioctl_type {
+ /* bus owner (00-0f) */
+ KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00,
+ struct kdbus_cmd),
+
+ /* endpoint owner (10-1f) */
+ KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10,
+ struct kdbus_cmd),
+ KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x11,
+ struct kdbus_cmd),
+
+ /* connection owner (80-ff) */
+ KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x80,
+ struct kdbus_cmd_hello),
+ KDBUS_CMD_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x81,
+ struct kdbus_cmd),
+ KDBUS_CMD_BYEBYE = _IOW(KDBUS_IOCTL_MAGIC, 0x82,
+ struct kdbus_cmd),
+ KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x83,
+ struct kdbus_cmd_free),
+ KDBUS_CMD_CONN_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x84,
+ struct kdbus_cmd_info),
+ KDBUS_CMD_BUS_CREATOR_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x85,
+ struct kdbus_cmd_info),
+ KDBUS_CMD_LIST = _IOR(KDBUS_IOCTL_MAGIC, 0x86,
+ struct kdbus_cmd_list),
+
+ KDBUS_CMD_SEND = _IOW(KDBUS_IOCTL_MAGIC, 0x90,
+ struct kdbus_cmd_send),
+ KDBUS_CMD_RECV = _IOR(KDBUS_IOCTL_MAGIC, 0x91,
+ struct kdbus_cmd_recv),
+
+ KDBUS_CMD_NAME_ACQUIRE = _IOW(KDBUS_IOCTL_MAGIC, 0xa0,
+ struct kdbus_cmd),
+ KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0xa1,
+ struct kdbus_cmd),
+
+ KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0xb0,
+ struct kdbus_cmd_match),
+ KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0xb1,
+ struct kdbus_cmd_match),
+};
+
+#endif /* _UAPI_KDBUS_H_ */
--- /dev/null
+/* include/linux/logger.h
+ *
+ * Copyright (C) 2007-2008 Google, Inc.
+ * Author: Robert Love <rlove@android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#ifndef _LINUX_LOGGER_H
+#define _LINUX_LOGGER_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/**
+ * struct user_logger_entry_compat - defines a single entry that is given to a logger
+ * @len: The length of the payload
+ * @__pad: Two bytes of padding that appear to be required
+ * @pid: The generating process' process ID
+ * @tid: The generating process' thread ID
+ * @sec: The number of seconds that have elapsed since the Epoch
+ * @nsec: The number of nanoseconds that have elapsed since @sec
+ * @msg: The message that is to be logged
+ *
+ * The userspace structure for version 1 of the logger_entry ABI.
+ * This structure is returned to userspace unless the caller requests
+ * an upgrade to a newer ABI version.
+ */
+struct user_logger_entry_compat {
+ __u16 len;
+ __u16 __pad;
+ __s32 pid;
+ __s32 tid;
+ __s32 sec;
+ __s32 nsec;
+ char msg[0];
+};
+
+/**
+ * struct logger_entry - defines a single entry that is given to a logger
+ * @len: The length of the payload
+ * @hdr_size: sizeof(struct logger_entry_v2)
+ * @pid: The generating process' process ID
+ * @tid: The generating process' thread ID
+ * @sec: The number of seconds that have elapsed since the Epoch
+ * @nsec: The number of nanoseconds that have elapsed since @sec
+ * @euid: Effective UID of logger
+ * @msg: The message that is to be logged
+ *
+ * The structure for version 2 of the logger_entry ABI.
+ * This structure is returned to userspace if ioctl(LOGGER_SET_VERSION)
+ * is called with version >= 2
+ */
+struct logger_entry {
+ __u16 len;
+ __u16 hdr_size;
+ __s32 pid;
+ __s32 tid;
+ __s32 sec;
+ __s32 nsec;
+#ifndef __KERNEL__
+ __s32 euid;
+#else
+ kuid_t euid;
+#endif
+ char msg[0];
+};
+
+/**
+ * struct logger_set_tag
+ * @len: Length of a NULL-terminated tag including '\0'
+ * @ptr: Pointer to a user buffer containing the tag
+ */
+struct logger_set_tag {
+ __u64 len;
+ __u64 ptr;
+};
+
+#define LOGGER_LOG_RADIO "log_radio" /* radio-related messages */
+#define LOGGER_LOG_EVENTS "log_events" /* system/hardware events */
+#define LOGGER_LOG_SYSTEM "log_system" /* system/framework messages */
+#define LOGGER_LOG_MAIN "log_main" /* everything else */
+
+#define LOGGER_ENTRY_MAX_PAYLOAD 4076
+
+#define __LOGGERIO 0xAE
+
+#define LOGGER_GET_LOG_BUF_SIZE _IO(__LOGGERIO, 1) /* size of log */
+#define LOGGER_GET_LOG_LEN _IO(__LOGGERIO, 2) /* used log len */
+#define LOGGER_GET_NEXT_ENTRY_LEN _IO(__LOGGERIO, 3) /* next entry len */
+#define LOGGER_FLUSH_LOG _IO(__LOGGERIO, 4) /* flush log */
+#define LOGGER_GET_VERSION _IO(__LOGGERIO, 5) /* abi version */
+#define LOGGER_SET_VERSION _IO(__LOGGERIO, 6) /* abi version */
+#define LOGGER_SET_TAG _IO(__LOGGERIO, 7) /* stdio tag */
+#define LOGGER_SET_PRIO _IO(__LOGGERIO, 8) /* stdio priority */
+
+#endif /* _LINUX_LOGGER_H */
obj-$(BUILD_kdbus) += kdbus/
all:
- make -C $(KERNELDIR) M=$(PWD) modules
+ make -C $(KERNELDIR) M=$(PWD) CFLAGS_MODULE=-I$(PWD)/include modules
modules_install:
make -C $(KERNELDIR) M=$(PWD) INSTALL_MOD_STRIP=$(INSTALL_MOD_STRIP) INSTALL_MOD_PATH=$(PWD)/../$(INSTALL_MOD_PATH) modules_install
#include <linux/mutex.h>
#include <linux/rwsem.h>
#include <linux/spinlock.h>
-#include "kdbus.h"
+#include <uapi/linux/kdbus.h>
#include "metadata.h"
#include "names.h"
#define __KDBUS_HANDLE_H
#include <linux/fs.h>
-#include "kdbus.h"
+#include <uapi/linux/kdbus.h>
extern const struct file_operations kdbus_handle_ops;
#define __KDBUS_ITEM_H
#include <linux/kernel.h>
-#include "kdbus.h"
+#include <uapi/linux/kdbus.h>
#include "util.h"
+++ /dev/null
-/*
- * kdbus is free software; you can redistribute it and/or modify it under
- * 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.
- */
-
-#ifndef _UAPI_KDBUS_H_
-#define _UAPI_KDBUS_H_
-
-#include <linux/ioctl.h>
-#include <linux/types.h>
-
-#define KDBUS_IOCTL_MAGIC 0x95
-#define KDBUS_SRC_ID_KERNEL (0)
-#define KDBUS_DST_ID_NAME (0)
-#define KDBUS_MATCH_ID_ANY (~0ULL)
-#define KDBUS_DST_ID_BROADCAST (~0ULL)
-#define KDBUS_FLAG_NEGOTIATE (1ULL << 63)
-
-/**
- * struct kdbus_notify_id_change - name registry change message
- * @id: New or former owner of the name
- * @flags: flags field from KDBUS_HELLO_*
- *
- * Sent from kernel to userspace when the owner or activator of
- * a well-known name changes.
- *
- * Attached to:
- * KDBUS_ITEM_ID_ADD
- * KDBUS_ITEM_ID_REMOVE
- */
-struct kdbus_notify_id_change {
- __u64 id;
- __u64 flags;
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_notify_name_change - name registry change message
- * @old_id: ID and flags of former owner of a name
- * @new_id: ID and flags of new owner of a name
- * @name: Well-known name
- *
- * Sent from kernel to userspace when the owner or activator of
- * a well-known name changes.
- *
- * Attached to:
- * KDBUS_ITEM_NAME_ADD
- * KDBUS_ITEM_NAME_REMOVE
- * KDBUS_ITEM_NAME_CHANGE
- */
-struct kdbus_notify_name_change {
- struct kdbus_notify_id_change old_id;
- struct kdbus_notify_id_change new_id;
- char name[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_creds - process credentials
- * @uid: User ID
- * @euid: Effective UID
- * @suid: Saved UID
- * @fsuid: Filesystem UID
- * @gid: Group ID
- * @egid: Effective GID
- * @sgid: Saved GID
- * @fsgid: Filesystem GID
- *
- * Attached to:
- * KDBUS_ITEM_CREDS
- */
-struct kdbus_creds {
- __u64 uid;
- __u64 euid;
- __u64 suid;
- __u64 fsuid;
- __u64 gid;
- __u64 egid;
- __u64 sgid;
- __u64 fsgid;
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_pids - process identifiers
- * @pid: Process ID
- * @tid: Thread ID
- * @ppid: Parent process ID
- *
- * The PID and TID of a process.
- *
- * Attached to:
- * KDBUS_ITEM_PIDS
- */
-struct kdbus_pids {
- __u64 pid;
- __u64 tid;
- __u64 ppid;
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_caps - process capabilities
- * @last_cap: Highest currently known capability bit
- * @caps: Variable number of 32-bit capabilities flags
- *
- * Contains a variable number of 32-bit capabilities flags.
- *
- * Attached to:
- * KDBUS_ITEM_CAPS
- */
-struct kdbus_caps {
- __u32 last_cap;
- __u32 caps[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_audit - audit information
- * @sessionid: The audit session ID
- * @loginuid: The audit login uid
- *
- * Attached to:
- * KDBUS_ITEM_AUDIT
- */
-struct kdbus_audit {
- __u32 sessionid;
- __u32 loginuid;
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_timestamp
- * @seqnum: Global per-domain message sequence number
- * @monotonic_ns: Monotonic timestamp, in nanoseconds
- * @realtime_ns: Realtime timestamp, in nanoseconds
- *
- * Attached to:
- * KDBUS_ITEM_TIMESTAMP
- */
-struct kdbus_timestamp {
- __u64 seqnum;
- __u64 monotonic_ns;
- __u64 realtime_ns;
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_vec - I/O vector for kdbus payload items
- * @size: The size of the vector
- * @address: Memory address of data buffer
- * @offset: Offset in the in-message payload memory,
- * relative to the message head
- *
- * Attached to:
- * KDBUS_ITEM_PAYLOAD_VEC, KDBUS_ITEM_PAYLOAD_OFF
- */
-struct kdbus_vec {
- __u64 size;
- union {
- __u64 address;
- __u64 offset;
- };
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_bloom_parameter - bus-wide bloom parameters
- * @size: Size of the bit field in bytes (m / 8)
- * @n_hash: Number of hash functions used (k)
- */
-struct kdbus_bloom_parameter {
- __u64 size;
- __u64 n_hash;
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_bloom_filter - bloom filter containing n elements
- * @generation: Generation of the element set in the filter
- * @data: Bit field, multiple of 8 bytes
- */
-struct kdbus_bloom_filter {
- __u64 generation;
- __u64 data[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_memfd - a kdbus memfd
- * @start: The offset into the memfd where the segment starts
- * @size: The size of the memfd segment
- * @fd: The file descriptor number
- * @__pad: Padding to ensure proper alignment and size
- *
- * Attached to:
- * KDBUS_ITEM_PAYLOAD_MEMFD
- */
-struct kdbus_memfd {
- __u64 start;
- __u64 size;
- int fd;
- __u32 __pad;
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_name - a registered well-known name with its flags
- * @flags: Flags from KDBUS_NAME_*
- * @name: Well-known name
- *
- * Attached to:
- * KDBUS_ITEM_OWNED_NAME
- */
-struct kdbus_name {
- __u64 flags;
- char name[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_policy_access_type - permissions of a policy record
- * @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
- * @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
- * @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
- * @KDBUS_POLICY_ACCESS_WORLD: World-accessible
- */
-enum kdbus_policy_access_type {
- _KDBUS_POLICY_ACCESS_NULL,
- KDBUS_POLICY_ACCESS_USER,
- KDBUS_POLICY_ACCESS_GROUP,
- KDBUS_POLICY_ACCESS_WORLD,
-};
-
-/**
- * enum kdbus_policy_access_flags - mode flags
- * @KDBUS_POLICY_OWN: Allow to own a well-known name
- * Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE
- * @KDBUS_POLICY_TALK: Allow communication to a well-known name
- * Implies KDBUS_POLICY_SEE
- * @KDBUS_POLICY_SEE: Allow to see a well-known name
- */
-enum kdbus_policy_type {
- KDBUS_POLICY_SEE = 0,
- KDBUS_POLICY_TALK,
- KDBUS_POLICY_OWN,
-};
-
-/**
- * struct kdbus_policy_access - policy access item
- * @type: One of KDBUS_POLICY_ACCESS_* types
- * @access: Access to grant
- * @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 access; /* OWN, TALK, SEE */
- __u64 id; /* uid, gid, 0 */
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_attach_flags - flags for metadata attachments
- * @KDBUS_ATTACH_TIMESTAMP: Timestamp
- * @KDBUS_ATTACH_CREDS: Credentials
- * @KDBUS_ATTACH_PIDS: PIDs
- * @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
- * @KDBUS_ATTACH_NAMES: Well-known names
- * @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID
- * @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID
- * @KDBUS_ATTACH_EXE: The path of the executable
- * @KDBUS_ATTACH_CMDLINE: The process command line
- * @KDBUS_ATTACH_CGROUP: The croup membership
- * @KDBUS_ATTACH_CAPS: The process capabilities
- * @KDBUS_ATTACH_SECLABEL: The security label
- * @KDBUS_ATTACH_AUDIT: The audit IDs
- * @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name
- * @_KDBUS_ATTACH_ALL: All of the above
- * @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of
- * metatdata.
- */
-enum kdbus_attach_flags {
- KDBUS_ATTACH_TIMESTAMP = 1ULL << 0,
- KDBUS_ATTACH_CREDS = 1ULL << 1,
- KDBUS_ATTACH_PIDS = 1ULL << 2,
- KDBUS_ATTACH_AUXGROUPS = 1ULL << 3,
- KDBUS_ATTACH_NAMES = 1ULL << 4,
- KDBUS_ATTACH_TID_COMM = 1ULL << 5,
- KDBUS_ATTACH_PID_COMM = 1ULL << 6,
- KDBUS_ATTACH_EXE = 1ULL << 7,
- KDBUS_ATTACH_CMDLINE = 1ULL << 8,
- KDBUS_ATTACH_CGROUP = 1ULL << 9,
- KDBUS_ATTACH_CAPS = 1ULL << 10,
- KDBUS_ATTACH_SECLABEL = 1ULL << 11,
- KDBUS_ATTACH_AUDIT = 1ULL << 12,
- KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13,
- _KDBUS_ATTACH_ALL = (1ULL << 14) - 1,
- _KDBUS_ATTACH_ANY = ~0ULL
-};
-
-/**
- * enum kdbus_item_type - item types to chain data in a list
- * @_KDBUS_ITEM_NULL: Uninitialized/invalid
- * @_KDBUS_ITEM_USER_BASE: Start of user items
- * @KDBUS_ITEM_NEGOTIATE: Negotiate supported items
- * @KDBUS_ITEM_PAYLOAD_VEC: Vector to data
- * @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head
- * @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd
- * @KDBUS_ITEM_FDS: Attached file descriptors
- * @KDBUS_ITEM_CANCEL_FD: FD used to cancel a synchronous
- * operation by writing to it from
- * userspace
- * @KDBUS_ITEM_BLOOM_PARAMETER: Bus-wide bloom parameters, used with
- * KDBUS_CMD_BUS_MAKE, carries a
- * struct kdbus_bloom_parameter
- * @KDBUS_ITEM_BLOOM_FILTER: Bloom filter carried with a message,
- * used to match against a bloom mask of a
- * connection, carries a struct
- * kdbus_bloom_filter
- * @KDBUS_ITEM_BLOOM_MASK: Bloom mask used to match against a
- * message'sbloom filter
- * @KDBUS_ITEM_DST_NAME: Destination's well-known name
- * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint
- * @KDBUS_ITEM_ATTACH_FLAGS_SEND: Attach-flags, used for updating which
- * metadata a connection opts in to send
- * @KDBUS_ITEM_ATTACH_FLAGS_RECV: Attach-flags, used for updating which
- * metadata a connection requests to
- * receive for each reeceived message
- * @KDBUS_ITEM_ID: Connection ID
- * @KDBUS_ITEM_NAME: Well-know name with flags
- * @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items
- * @KDBUS_ITEM_TIMESTAMP: Timestamp
- * @KDBUS_ITEM_CREDS: Process credentials
- * @KDBUS_ITEM_PIDS: Process identifiers
- * @KDBUS_ITEM_AUXGROUPS: Auxiliary process groups
- * @KDBUS_ITEM_OWNED_NAME: A name owned by the associated
- * connection
- * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier
- * (Don't trust this, see below.)
- * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier
- * (Don't trust this, see below.)
- * @KDBUS_ITEM_EXE: The path of the executable
- * (Don't trust this, see below.)
- * @KDBUS_ITEM_CMDLINE: The process command line
- * (Don't trust this, see below.)
- * @KDBUS_ITEM_CGROUP: The croup membership
- * @KDBUS_ITEM_CAPS: The process capabilities
- * @KDBUS_ITEM_SECLABEL: The security label
- * @KDBUS_ITEM_AUDIT: The audit IDs
- * @KDBUS_ITEM_CONN_DESCRIPTION: The connection's human-readable name
- * (debugging)
- * @_KDBUS_ITEM_POLICY_BASE: Start of policy items
- * @KDBUS_ITEM_POLICY_ACCESS: Policy access block
- * @_KDBUS_ITEM_KERNEL_BASE: Start of kernel-generated message items
- * @KDBUS_ITEM_NAME_ADD: Notification in kdbus_notify_name_change
- * @KDBUS_ITEM_NAME_REMOVE: Notification in kdbus_notify_name_change
- * @KDBUS_ITEM_NAME_CHANGE: Notification in kdbus_notify_name_change
- * @KDBUS_ITEM_ID_ADD: Notification in kdbus_notify_id_change
- * @KDBUS_ITEM_ID_REMOVE: Notification in kdbus_notify_id_change
- * @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached
- * @KDBUS_ITEM_REPLY_DEAD: Destination died
- *
- * N.B: The process and thread COMM fields, as well as the CMDLINE and
- * EXE fields may be altered by unprivileged processes und should
- * hence *not* used for security decisions. Peers should make use of
- * these items only for informational purposes, such as generating log
- * records.
- */
-enum kdbus_item_type {
- _KDBUS_ITEM_NULL,
- _KDBUS_ITEM_USER_BASE,
- KDBUS_ITEM_NEGOTIATE = _KDBUS_ITEM_USER_BASE,
- KDBUS_ITEM_PAYLOAD_VEC,
- KDBUS_ITEM_PAYLOAD_OFF,
- KDBUS_ITEM_PAYLOAD_MEMFD,
- KDBUS_ITEM_FDS,
- KDBUS_ITEM_CANCEL_FD,
- KDBUS_ITEM_BLOOM_PARAMETER,
- KDBUS_ITEM_BLOOM_FILTER,
- KDBUS_ITEM_BLOOM_MASK,
- KDBUS_ITEM_DST_NAME,
- KDBUS_ITEM_MAKE_NAME,
- KDBUS_ITEM_ATTACH_FLAGS_SEND,
- KDBUS_ITEM_ATTACH_FLAGS_RECV,
- KDBUS_ITEM_ID,
- KDBUS_ITEM_NAME,
- KDBUS_ITEM_DST_ID,
-
- /* keep these item types in sync with KDBUS_ATTACH_* flags */
- _KDBUS_ITEM_ATTACH_BASE = 0x1000,
- KDBUS_ITEM_TIMESTAMP = _KDBUS_ITEM_ATTACH_BASE,
- KDBUS_ITEM_CREDS,
- KDBUS_ITEM_PIDS,
- KDBUS_ITEM_AUXGROUPS,
- KDBUS_ITEM_OWNED_NAME,
- KDBUS_ITEM_TID_COMM,
- KDBUS_ITEM_PID_COMM,
- KDBUS_ITEM_EXE,
- KDBUS_ITEM_CMDLINE,
- KDBUS_ITEM_CGROUP,
- KDBUS_ITEM_CAPS,
- KDBUS_ITEM_SECLABEL,
- KDBUS_ITEM_AUDIT,
- KDBUS_ITEM_CONN_DESCRIPTION,
-
- _KDBUS_ITEM_POLICY_BASE = 0x2000,
- KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE,
-
- _KDBUS_ITEM_KERNEL_BASE = 0x8000,
- KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
- KDBUS_ITEM_NAME_REMOVE,
- KDBUS_ITEM_NAME_CHANGE,
- KDBUS_ITEM_ID_ADD,
- KDBUS_ITEM_ID_REMOVE,
- KDBUS_ITEM_REPLY_TIMEOUT,
- KDBUS_ITEM_REPLY_DEAD,
-};
-
-/**
- * struct kdbus_item - chain of data blocks
- * @size: Overall data record size
- * @type: Kdbus_item type of data
- * @data: Generic bytes
- * @data32: Generic 32 bit array
- * @data64: Generic 64 bit array
- * @str: Generic string
- * @id: Connection ID
- * @vec: KDBUS_ITEM_PAYLOAD_VEC
- * @creds: KDBUS_ITEM_CREDS
- * @audit: KDBUS_ITEM_AUDIT
- * @timestamp: KDBUS_ITEM_TIMESTAMP
- * @name: KDBUS_ITEM_NAME
- * @bloom_parameter: KDBUS_ITEM_BLOOM_PARAMETER
- * @bloom_filter: KDBUS_ITEM_BLOOM_FILTER
- * @memfd: KDBUS_ITEM_PAYLOAD_MEMFD
- * @name_change: KDBUS_ITEM_NAME_ADD
- * KDBUS_ITEM_NAME_REMOVE
- * KDBUS_ITEM_NAME_CHANGE
- * @id_change: KDBUS_ITEM_ID_ADD
- * KDBUS_ITEM_ID_REMOVE
- * @policy: KDBUS_ITEM_POLICY_ACCESS
- */
-struct kdbus_item {
- __u64 size;
- __u64 type;
- union {
- __u8 data[0];
- __u32 data32[0];
- __u64 data64[0];
- char str[0];
-
- __u64 id;
- struct kdbus_vec vec;
- struct kdbus_creds creds;
- struct kdbus_pids pids;
- struct kdbus_audit audit;
- struct kdbus_caps caps;
- struct kdbus_timestamp timestamp;
- struct kdbus_name name;
- struct kdbus_bloom_parameter bloom_parameter;
- struct kdbus_bloom_filter bloom_filter;
- struct kdbus_memfd memfd;
- int fds[0];
- struct kdbus_notify_name_change name_change;
- struct kdbus_notify_id_change id_change;
- struct kdbus_policy_access policy_access;
- };
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_msg_flags - type of message
- * @KDBUS_MSG_EXPECT_REPLY: Expect a reply message, used for
- * method calls. The userspace-supplied
- * cookie identifies the message and the
- * respective reply carries the cookie
- * in cookie_reply
- * @KDBUS_MSG_NO_AUTO_START: Do not start a service if the addressed
- * name is not currently active. This flag is
- * not looked at by the kernel but only
- * serves as hint for userspace implementations.
- * @KDBUS_MSG_SIGNAL: Treat this message as signal
- */
-enum kdbus_msg_flags {
- KDBUS_MSG_EXPECT_REPLY = 1ULL << 0,
- KDBUS_MSG_NO_AUTO_START = 1ULL << 1,
- KDBUS_MSG_SIGNAL = 1ULL << 2,
-};
-
-/**
- * enum kdbus_payload_type - type of payload carried by message
- * @KDBUS_PAYLOAD_KERNEL: Kernel-generated simple message
- * @KDBUS_PAYLOAD_DBUS: D-Bus marshalling "DBusDBus"
- *
- * Any payload-type is accepted. Common types will get added here once
- * established.
- */
-enum kdbus_payload_type {
- KDBUS_PAYLOAD_KERNEL,
- KDBUS_PAYLOAD_DBUS = 0x4442757344427573ULL,
-};
-
-/**
- * struct kdbus_msg - the representation of a kdbus message
- * @size: Total size of the message
- * @flags: Message flags (KDBUS_MSG_*), userspace → kernel
- * @priority: Message queue priority value
- * @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, for the connection
- * to identify its messages
- * @timeout_ns: The time to wait for a message reply from the peer.
- * If there is no reply, and the send command is
- * executed asynchronously, a kernel-generated message
- * with an attached KDBUS_ITEM_REPLY_TIMEOUT item
- * is sent to @src_id. For synchronously executed send
- * command, the value denotes the maximum time the call
- * blocks to wait for a reply. The timeout is expected in
- * nanoseconds and as absolute CLOCK_MONOTONIC value.
- * @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
- * @items: A list of kdbus_items containing the message payload
- */
-struct kdbus_msg {
- __u64 size;
- __u64 flags;
- __s64 priority;
- __u64 dst_id;
- __u64 src_id;
- __u64 payload_type;
- __u64 cookie;
- union {
- __u64 timeout_ns;
- __u64 cookie_reply;
- };
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_msg_info - returned message container
- * @offset: Offset of kdbus_msg slice in pool
- * @msg_size: Copy of the kdbus_msg.size field
- * @return_flags: Command return flags, kernel → userspace
- */
-struct kdbus_msg_info {
- __u64 offset;
- __u64 msg_size;
- __u64 return_flags;
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_send_flags - flags for sending messages
- * @KDBUS_SEND_SYNC_REPLY: Wait for destination connection to
- * reply to this message. The
- * KDBUS_CMD_SEND ioctl() will block
- * until the reply is received, and
- * reply in struct kdbus_cmd_send will
- * yield the offset in the sender's pool
- * where the reply can be found.
- * This flag is only valid if
- * @KDBUS_MSG_EXPECT_REPLY is set as well.
- */
-enum kdbus_send_flags {
- KDBUS_SEND_SYNC_REPLY = 1ULL << 0,
-};
-
-/**
- * struct kdbus_cmd_send - send message
- * @size: Overall size of this structure
- * @flags: Flags to change send behavior (KDBUS_SEND_*)
- * @return_flags: Command return flags, kernel → userspace
- * @msg_address: Storage address of the kdbus_msg to send
- * @reply: Storage for message reply if KDBUS_SEND_SYNC_REPLY
- * was given
- * @items: Additional items for this command
- */
-struct kdbus_cmd_send {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- __u64 msg_address;
- struct kdbus_msg_info reply;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_recv_flags - flags for de-queuing messages
- * @KDBUS_RECV_PEEK: Return the next queued message without
- * actually de-queuing it, and without installing
- * any file descriptors or other resources. It is
- * usually used to determine the activating
- * connection of a bus name.
- * @KDBUS_RECV_DROP: Drop and free the next queued message and all
- * its resources without actually receiving it.
- * @KDBUS_RECV_USE_PRIORITY: Only de-queue messages with the specified or
- * higher priority (lowest values); if not set,
- * the priority value is ignored.
- */
-enum kdbus_recv_flags {
- KDBUS_RECV_PEEK = 1ULL << 0,
- KDBUS_RECV_DROP = 1ULL << 1,
- KDBUS_RECV_USE_PRIORITY = 1ULL << 2,
-};
-
-/**
- * enum kdbus_recv_return_flags - return flags for message receive commands
- * @KDBUS_RECV_RETURN_INCOMPLETE_FDS: One or more file descriptors could not
- * be installed. These descriptors in
- * KDBUS_ITEM_FDS will carry the value -1.
- * @KDBUS_RECV_RETURN_DROPPED_MSGS: There have been dropped messages since
- * the last time a message was received.
- * The 'dropped_msgs' counter contains the
- * number of messages dropped pool
- * overflows or other missed broadcasts.
- */
-enum kdbus_recv_return_flags {
- KDBUS_RECV_RETURN_INCOMPLETE_FDS = 1ULL << 0,
- KDBUS_RECV_RETURN_DROPPED_MSGS = 1ULL << 1,
-};
-
-/**
- * struct kdbus_cmd_recv - struct to de-queue a buffered message
- * @size: Overall size of this object
- * @flags: KDBUS_RECV_* flags, userspace → kernel
- * @return_flags: Command return flags, kernel → userspace
- * @priority: Minimum priority of the messages to de-queue. Lowest
- * values have the highest priority.
- * @dropped_msgs: In case there were any dropped messages since the last
- * time a message was received, this will be set to the
- * number of lost messages and
- * KDBUS_RECV_RETURN_DROPPED_MSGS will be set in
- * 'return_flags'. This can only happen if the ioctl
- * returns 0 or EAGAIN.
- * @msg: Return storage for received message.
- * @items: Additional items for this command.
- *
- * This struct is used with the KDBUS_CMD_RECV ioctl.
- */
-struct kdbus_cmd_recv {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- __s64 priority;
- __u64 dropped_msgs;
- struct kdbus_msg_info msg;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_cmd_free - struct to free a slice of memory in the pool
- * @size: Overall size of this structure
- * @flags: Flags for the free command, userspace → kernel
- * @return_flags: Command return flags, kernel → userspace
- * @offset: The offset of the memory slice, as returned by other
- * ioctls
- * @items: Additional items to modify the behavior
- *
- * This struct is used with the KDBUS_CMD_FREE ioctl.
- */
-struct kdbus_cmd_free {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- __u64 offset;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
- * @KDBUS_HELLO_ACCEPT_FD: The connection allows the reception of
- * any passed file descriptors
- * @KDBUS_HELLO_ACTIVATOR: Special-purpose connection which registers
- * a well-know name for a process to be started
- * when traffic arrives
- * @KDBUS_HELLO_POLICY_HOLDER: Special-purpose connection which registers
- * policy entries for a name. The provided name
- * is not activated and not registered with the
- * name database, it only allows unprivileged
- * connections to acquire a name, talk or discover
- * a service
- * @KDBUS_HELLO_MONITOR: Special-purpose connection to monitor
- * bus traffic
- */
-enum kdbus_hello_flags {
- KDBUS_HELLO_ACCEPT_FD = 1ULL << 0,
- KDBUS_HELLO_ACTIVATOR = 1ULL << 1,
- KDBUS_HELLO_POLICY_HOLDER = 1ULL << 2,
- KDBUS_HELLO_MONITOR = 1ULL << 3,
-};
-
-/**
- * struct kdbus_cmd_hello - struct to say hello to kdbus
- * @size: The total size of the structure
- * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
- * @return_flags: Command return flags, kernel → userspace
- * @attach_flags_send: Mask of metadata to attach to each message sent
- * off by this connection (KDBUS_ATTACH_*)
- * @attach_flags_recv: Mask of metadata to attach to each message receieved
- * by the new connection (KDBUS_ATTACH_*)
- * @bus_flags: The flags field copied verbatim from the original
- * 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)
- * @pool_size: Size of the connection's buffer where the received
- * messages are placed
- * @offset: Pool offset where items are returned to report
- * additional information about the bus and the newly
- * created connection.
- * @items_size: Size of buffer returned in the pool slice at @offset.
- * @id128: Unique 128-bit ID of the bus (kernel → userspace)
- * @items: A list of items
- *
- * This struct is used with the KDBUS_CMD_HELLO ioctl.
- */
-struct kdbus_cmd_hello {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- __u64 attach_flags_send;
- __u64 attach_flags_recv;
- __u64 bus_flags;
- __u64 id;
- __u64 pool_size;
- __u64 offset;
- __u64 items_size;
- __u8 id128[16];
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_info - connection information
- * @size: total size of the struct
- * @id: 64bit object ID
- * @flags: object creation flags
- * @items: list of items
- *
- * Note that the user is responsible for freeing the allocated memory with
- * the KDBUS_CMD_FREE ioctl.
- */
-struct kdbus_info {
- __u64 size;
- __u64 id;
- __u64 flags;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_list_flags - what to include into the returned list
- * @KDBUS_LIST_UNIQUE: active connections
- * @KDBUS_LIST_ACTIVATORS: activator connections
- * @KDBUS_LIST_NAMES: known well-known names
- * @KDBUS_LIST_QUEUED: queued-up names
- */
-enum kdbus_list_flags {
- KDBUS_LIST_UNIQUE = 1ULL << 0,
- KDBUS_LIST_NAMES = 1ULL << 1,
- KDBUS_LIST_ACTIVATORS = 1ULL << 2,
- KDBUS_LIST_QUEUED = 1ULL << 3,
-};
-
-/**
- * struct kdbus_cmd_list - list connections
- * @size: overall size of this object
- * @flags: flags for the query (KDBUS_LIST_*), userspace → kernel
- * @return_flags: command return flags, kernel → userspace
- * @offset: Offset in the caller's pool buffer where an array of
- * kdbus_info objects is stored.
- * The user must use KDBUS_CMD_FREE to free the
- * allocated memory.
- * @list_size: size of returned list in bytes
- * @items: Items for the command. Reserved for future use.
- *
- * This structure is used with the KDBUS_CMD_LIST ioctl.
- */
-struct kdbus_cmd_list {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- __u64 offset;
- __u64 list_size;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl
- * @size: The total size of the struct
- * @flags: Flags for this ioctl, userspace → kernel
- * @return_flags: Command return flags, kernel → userspace
- * @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.
- * @attach_flags: Set of attach flags to specify the set of information
- * to receive, userspace → kernel
- * @offset: Returned offset in the caller's pool buffer where the
- * kdbus_info struct result is stored. The user must
- * use KDBUS_CMD_FREE to free the allocated memory.
- * @info_size: Output buffer to report size of data at @offset.
- * @items: The optional item list, containing the
- * well-known name to look up as a KDBUS_ITEM_NAME.
- * Only needed in 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
- * result in a struct kdbus_info.
- */
-struct kdbus_cmd_info {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- __u64 id;
- __u64 attach_flags;
- __u64 offset;
- __u64 info_size;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_cmd_match_flags - flags to control the KDBUS_CMD_MATCH_ADD ioctl
- * @KDBUS_MATCH_REPLACE: If entries with the supplied cookie already
- * exists, remove them before installing the new
- * matches.
- */
-enum kdbus_cmd_match_flags {
- KDBUS_MATCH_REPLACE = 1ULL << 0,
-};
-
-/**
- * struct kdbus_cmd_match - struct to add or remove matches
- * @size: The total size of the struct
- * @flags: Flags for match command (KDBUS_MATCH_*),
- * userspace → kernel
- * @return_flags: Command return flags, kernel → userspace
- * @cookie: Userspace supplied cookie. When removing, the cookie
- * identifies the match to remove
- * @items: A list of items for additional information
- *
- * This structure is used with the KDBUS_CMD_MATCH_ADD and
- * KDBUS_CMD_MATCH_REMOVE ioctl.
- */
-struct kdbus_cmd_match {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- __u64 cookie;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,ENDPOINT}_MAKE
- * @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible
- * @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible
- */
-enum kdbus_make_flags {
- KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
- KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
-};
-
-/**
- * enum kdbus_name_flags - flags for KDBUS_CMD_NAME_ACQUIRE
- * @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
- * @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
- * @KDBUS_NAME_QUEUE: Name should be queued if busy
- * @KDBUS_NAME_IN_QUEUE: Name is queued
- * @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
- * @KDBUS_NAME_PRIMARY: Primary owner of the name
- * @KDBUS_NAME_ACQUIRED: Name was acquired/queued _now_
- */
-enum kdbus_name_flags {
- KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
- KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
- KDBUS_NAME_QUEUE = 1ULL << 2,
- KDBUS_NAME_IN_QUEUE = 1ULL << 3,
- KDBUS_NAME_ACTIVATOR = 1ULL << 4,
- KDBUS_NAME_PRIMARY = 1ULL << 5,
- KDBUS_NAME_ACQUIRED = 1ULL << 6,
-};
-
-/**
- * struct kdbus_cmd - generic ioctl payload
- * @size: Overall size of this structure
- * @flags: Flags for this ioctl, userspace → kernel
- * @return_flags: Ioctl return flags, kernel → userspace
- * @items: Additional items to modify the behavior
- *
- * This is a generic ioctl payload object. It's used by all ioctls that only
- * take flags and items as input.
- */
-struct kdbus_cmd {
- __u64 size;
- __u64 flags;
- __u64 return_flags;
- struct kdbus_item items[0];
-} __attribute__((__aligned__(8)));
-
-/**
- * Ioctl API
- *
- * KDBUS_CMD_BUS_MAKE: After opening the "control" node, this command
- * creates a new bus with the specified
- * name. The bus is immediately shut down and
- * cleaned up when the opened file descriptor is
- * closed.
- *
- * KDBUS_CMD_ENDPOINT_MAKE: Creates a new named special endpoint to talk to
- * the bus. Such endpoints usually carry a more
- * restrictive policy and grant restricted access
- * to specific applications.
- * KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
- * to update the policy.
- *
- * KDBUS_CMD_HELLO: By opening the bus node, a connection is
- * created. After a HELLO the opened connection
- * becomes an active peer on the bus.
- * KDBUS_CMD_UPDATE: Update the properties of a connection. Used to
- * update the metadata subscription mask and
- * policy.
- * KDBUS_CMD_BYEBYE: Disconnect a connection. If there are no
- * messages queued up in the connection's pool,
- * the call succeeds, and the handle is rendered
- * unusable. Otherwise, -EBUSY is returned without
- * any further side-effects.
- * KDBUS_CMD_FREE: Release the allocated memory in the receiver's
- * pool.
- * KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the
- * initial creator of the connection. The data was
- * stored at registration time and does not
- * necessarily represent the connected process or
- * the actual state of the process.
- * KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus
- * a connection is attached to.
- *
- * KDBUS_CMD_SEND: Send a message and pass data from userspace to
- * the kernel.
- * KDBUS_CMD_RECV: Receive a message from the kernel which is
- * placed in the receiver's pool.
- *
- * KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
- * the connection. Well-known names are used to
- * address a peer on the bus.
- * KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
- * currently owns.
- * KDBUS_CMD_LIST: Retrieve the list of all currently registered
- * well-known and unique names.
- *
- * KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
- * be delivered to the connection.
- * KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages.
- */
-enum kdbus_ioctl_type {
- /* bus owner (00-0f) */
- KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00,
- struct kdbus_cmd),
-
- /* endpoint owner (10-1f) */
- KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10,
- struct kdbus_cmd),
- KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x11,
- struct kdbus_cmd),
-
- /* connection owner (80-ff) */
- KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x80,
- struct kdbus_cmd_hello),
- KDBUS_CMD_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x81,
- struct kdbus_cmd),
- KDBUS_CMD_BYEBYE = _IOW(KDBUS_IOCTL_MAGIC, 0x82,
- struct kdbus_cmd),
- KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x83,
- struct kdbus_cmd_free),
- KDBUS_CMD_CONN_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x84,
- struct kdbus_cmd_info),
- KDBUS_CMD_BUS_CREATOR_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x85,
- struct kdbus_cmd_info),
- KDBUS_CMD_LIST = _IOR(KDBUS_IOCTL_MAGIC, 0x86,
- struct kdbus_cmd_list),
-
- KDBUS_CMD_SEND = _IOW(KDBUS_IOCTL_MAGIC, 0x90,
- struct kdbus_cmd_send),
- KDBUS_CMD_RECV = _IOR(KDBUS_IOCTL_MAGIC, 0x91,
- struct kdbus_cmd_recv),
-
- KDBUS_CMD_NAME_ACQUIRE = _IOW(KDBUS_IOCTL_MAGIC, 0xa0,
- struct kdbus_cmd),
- KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0xa1,
- struct kdbus_cmd),
-
- KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0xb0,
- struct kdbus_cmd_match),
- KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0xb1,
- struct kdbus_cmd_match),
-};
-
-#endif /* _UAPI_KDBUS_H_ */
#include <linux/fs.h>
#include <linux/kref.h>
-#include "kdbus.h"
+#include <uapi/linux/kdbus.h>
struct kdbus_bus;
struct kdbus_conn;
#include <linux/ioctl.h>
#include <linux/stddef.h>
-#include "kdbus.h"
+#include <uapi/linux/kdbus.h>
/* all exported addresses are 64 bit */
#define KDBUS_PTR(addr) ((void __user *)(uintptr_t)(addr))
#include <linux/fdtable.h>
#include <linux/file.h>
-#include "logger.h"
+#include <uapi/linux/logger.h>
/**
* struct logger_log - represents a specific log, such as 'main' or 'radio'
+++ /dev/null
-/* include/linux/logger.h
- *
- * Copyright (C) 2007-2008 Google, Inc.
- * Author: Robert Love <rlove@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#ifndef _LINUX_LOGGER_H
-#define _LINUX_LOGGER_H
-
-#include <linux/types.h>
-#include <linux/ioctl.h>
-
-/**
- * struct user_logger_entry_compat - defines a single entry that is given to a logger
- * @len: The length of the payload
- * @__pad: Two bytes of padding that appear to be required
- * @pid: The generating process' process ID
- * @tid: The generating process' thread ID
- * @sec: The number of seconds that have elapsed since the Epoch
- * @nsec: The number of nanoseconds that have elapsed since @sec
- * @msg: The message that is to be logged
- *
- * The userspace structure for version 1 of the logger_entry ABI.
- * This structure is returned to userspace unless the caller requests
- * an upgrade to a newer ABI version.
- */
-struct user_logger_entry_compat {
- __u16 len;
- __u16 __pad;
- __s32 pid;
- __s32 tid;
- __s32 sec;
- __s32 nsec;
- char msg[0];
-};
-
-/**
- * struct logger_entry - defines a single entry that is given to a logger
- * @len: The length of the payload
- * @hdr_size: sizeof(struct logger_entry_v2)
- * @pid: The generating process' process ID
- * @tid: The generating process' thread ID
- * @sec: The number of seconds that have elapsed since the Epoch
- * @nsec: The number of nanoseconds that have elapsed since @sec
- * @euid: Effective UID of logger
- * @msg: The message that is to be logged
- *
- * The structure for version 2 of the logger_entry ABI.
- * This structure is returned to userspace if ioctl(LOGGER_SET_VERSION)
- * is called with version >= 2
- */
-struct logger_entry {
- __u16 len;
- __u16 hdr_size;
- __s32 pid;
- __s32 tid;
- __s32 sec;
- __s32 nsec;
-#ifndef __KERNEL__
- __s32 euid;
-#else
- kuid_t euid;
-#endif
- char msg[0];
-};
-
-/**
- * struct logger_set_tag
- * @len: Length of a NULL-terminated tag including '\0'
- * @ptr: Pointer to a user buffer containing the tag
- */
-struct logger_set_tag {
- __u64 len;
- __u64 ptr;
-};
-
-#define LOGGER_LOG_RADIO "log_radio" /* radio-related messages */
-#define LOGGER_LOG_EVENTS "log_events" /* system/hardware events */
-#define LOGGER_LOG_SYSTEM "log_system" /* system/framework messages */
-#define LOGGER_LOG_MAIN "log_main" /* everything else */
-
-#define LOGGER_ENTRY_MAX_PAYLOAD 4076
-
-#define __LOGGERIO 0xAE
-
-#define LOGGER_GET_LOG_BUF_SIZE _IO(__LOGGERIO, 1) /* size of log */
-#define LOGGER_GET_LOG_LEN _IO(__LOGGERIO, 2) /* used log len */
-#define LOGGER_GET_NEXT_ENTRY_LEN _IO(__LOGGERIO, 3) /* next entry len */
-#define LOGGER_FLUSH_LOG _IO(__LOGGERIO, 4) /* flush log */
-#define LOGGER_GET_VERSION _IO(__LOGGERIO, 5) /* abi version */
-#define LOGGER_SET_VERSION _IO(__LOGGERIO, 6) /* abi version */
-#define LOGGER_SET_TAG _IO(__LOGGERIO, 7) /* stdio tag */
-#define LOGGER_SET_PRIO _IO(__LOGGERIO, 8) /* stdio priority */
-
-#endif /* _LINUX_LOGGER_H */
mkdir -p %{buildroot}/usr/src/%{name}/kdbus
mkdir -p %{buildroot}/%{_includedir}/linux
+cp -a include/ %{buildroot}/usr/src/%{name}
cp kernel/*.[ch] kernel/Makefile COPYING %{buildroot}/usr/src/%{name}
cp kernel/kdbus/*.[ch] kernel/kdbus/Makefile %{buildroot}/usr/src/%{name}/kdbus
-# TODO: Consider adding logger.h
-cp kernel/kdbus/kdbus.h %{buildroot}/%{_includedir}/linux
+cp include/uapi/linux/kdbus.h %{buildroot}/%{_includedir}/linux
+cp include/uapi/linux/logger.h %{buildroot}/%{_includedir}/linux
%files
%manifest %{name}.manifest
%license COPYING
/usr/src/%{name}/COPYING
/usr/src/%{name}/*.c
-/usr/src/%{name}/*.h
/usr/src/%{name}/Makefile
/usr/src/%{name}/kdbus/*.c
/usr/src/%{name}/kdbus/*.h
/usr/src/%{name}/kdbus/Makefile
+/usr/src/%{name}/include/uapi/linux/*.h
%files headers
%manifest %{name}.manifest
%license COPYING
%{_includedir}/linux/kdbus.h
+%{_includedir}/linux/logger.h
projects / platform / kernel / linux-tizen-modules-source.git / commitdiff