/*
- * Copyright (C) 2013 Kay Sievers
- * Copyright (C) 2013 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- * Copyright (C) 2013 Linux Foundation
- * Copyright (C) 2013 Lennart Poettering
- * Copyright (C) 2013 Daniel Mack <daniel@zonque.org>
- *
* 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.
- *
- * "Everything should be made as simple as possible, but not simpler."
- * -- Albert Einstein
*/
-#ifndef _KDBUS_H_
-#define _KDBUS_H_
+#ifndef _KDBUS_UAPI_H_
+#define _KDBUS_UAPI_H_
-#ifndef __KERNEL__
-#include <sys/ioctl.h>
-#include <sys/types.h>
+#include <linux/ioctl.h>
#include <linux/types.h>
-#endif
-#define KDBUS_IOC_MAGIC 0x95
+#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_KERNEL (1ULL << 63)
/**
* struct kdbus_notify_id_change - name registry change message
/**
* struct kdbus_notify_name_change - name registry change message
- * @old: ID and flags of former owner of a name
- * @new: ID and flags of new owner of a name
+ * @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
* KDBUS_ITEM_NAME_CHANGE
*/
struct kdbus_notify_name_change {
- struct kdbus_notify_id_change old;
- struct kdbus_notify_id_change new;
+ struct kdbus_notify_id_change old_id;
+ struct kdbus_notify_id_change new_id;
char name[0];
};
/**
* struct kdbus_creds - process credentials
* @uid: User ID
+ * @euid: Effective UID
+ * @suid: Saved UID
+ * @fsuid: Filesystem UID
* @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/$PID/ you can afterwards check the starttime field of it, to ensure
- * you didn't run into a PID overrun.
+ * @egid: Effective GID
+ * @sgid: Saved GID
+ * @fsgid: Filesystem GID
*
* Attached to:
* KDBUS_ITEM_CREDS
*/
struct kdbus_creds {
__u64 uid;
+ __u64 euid;
+ __u64 suid;
+ __u64 fsuid;
__u64 gid;
+ __u64 egid;
+ __u64 sgid;
+ __u64 fsgid;
+};
+
+/**
+ * struct kdbus_pids - process identifiers
+ * @pid: Process ID
+ * @tid: Thread ID
+ * @starttime: Starttime of the process
+ *
+ * The PID, TID and starttime of a process. The start tmie is useful to detect
+ * PID overruns from the client side. i.e. if you use the PID to look something
+ * up in /proc/$PID/ you can afterwards check the starttime field of it, to
+ * ensure you didn't run into a PID overrun.
+ *
+ * Attached to:
+ * KDBUS_ITEM_PIDS
+ */
+struct kdbus_pids {
__u64 pid;
__u64 tid;
__u64 starttime;
};
+/**
+ * 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];
+};
+
/**
* struct kdbus_audit - audit information
* @sessionid: The audit session ID
/**
* struct kdbus_vec - I/O vector for kdbus payload items
* @size: The size of the vector
- * @address: Memory address for memory addresses
+ * @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_VEC, KDBUS_ITEM_PAYLOAD_OFF
*/
struct kdbus_vec {
__u64 size;
* struct kdbus_memfd - a kdbus memfd
* @size: The memfd's size
* @fd: The file descriptor number
- * @__pad: Padding to ensure proper alignement and size
+ * @__pad: Padding to ensure proper alignment and size
*
* Attached to:
* KDBUS_ITEM_PAYLOAD_MEMFD
/**
* struct kdbus_name - a registered well-known name with its flags
- * @flags: flags from KDBUS_NAME_*
- * @name: well-known name
+ * @flags: Flags from KDBUS_NAME_*
+ * @name: Well-known name
*
* Attached to:
- * KDBUS_ITEM_NAME
+ * KDBUS_ITEM_OWNED_NAME
*/
struct kdbus_name {
__u64 flags;
/**
* struct kdbus_policy_access - policy access item
* @type: One of KDBUS_POLICY_ACCESS_* types
- * @bits: Access to grant. One of KDBUS_POLICY_*
+ * @access: Access to grant
* @id: For KDBUS_POLICY_ACCESS_USER, the uid
* For KDBUS_POLICY_ACCESS_GROUP, the gid
*/
/**
* 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_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_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's
- * bloom filter
- * @KDBUS_ITEM_DST_NAME: Destination's well-known name
- * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint
- * @KDBUS_ITEM_MEMFD_NAME: The human readable name of a memfd (debugging)
- * @KDBUS_ITEM_ATTACH_FLAGS: Attach-flags, used for updating which metadata
- * a connection subscribes to
- * @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items
- * @KDBUS_ITEM_NAME: Well-know name with flags
- * @KDBUS_ITEM_ID: Connection ID
- * @KDBUS_ITEM_TIMESTAMP: Timestamp
- * @KDBUS_ITEM_CREDS: Process credential
- * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier
- * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier
- * @KDBUS_ITEM_EXE: The path of the executable
- * @KDBUS_ITEM_CMDLINE: The process command line
- * @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_NAME: 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: Notify in struct kdbus_notify_name_change
- * @KDBUS_ITEM_NAME_REMOVE: Notify in struct kdbus_notify_name_change
- * @KDBUS_ITEM_NAME_CHANGE: Notify in struct kdbus_notify_name_change
- * @KDBUS_ITEM_ID_ADD: Notify in struct kdbus_notify_id_change
- * @KDBUS_ITEM_ID_REMOVE: Notify in struct kdbus_notify_id_change
- * @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached
- * @KDBUS_ITEM_REPLY_DEAD: Destination died
+ * @_KDBUS_ITEM_NULL: Uninitialized/invalid
+ * @_KDBUS_ITEM_USER_BASE: Start of user 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_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_BLOOM_MASK,
KDBUS_ITEM_DST_NAME,
KDBUS_ITEM_MAKE_NAME,
- KDBUS_ITEM_MEMFD_NAME,
- KDBUS_ITEM_ATTACH_FLAGS,
+ KDBUS_ITEM_ATTACH_FLAGS_SEND,
+ KDBUS_ITEM_ATTACH_FLAGS_RECV,
+ KDBUS_ITEM_ID,
+ KDBUS_ITEM_NAME,
+ /* keep these item types in sync with KDBUS_ATTACH_* flags */
_KDBUS_ITEM_ATTACH_BASE = 0x1000,
- KDBUS_ITEM_NAME = _KDBUS_ITEM_ATTACH_BASE,
- KDBUS_ITEM_ID,
- KDBUS_ITEM_TIMESTAMP,
+ KDBUS_ITEM_TIMESTAMP = _KDBUS_ITEM_ATTACH_BASE,
KDBUS_ITEM_CREDS,
- KDBUS_ITEM_PID_COMM,
+ 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_NAME,
+ KDBUS_ITEM_CONN_DESCRIPTION,
_KDBUS_ITEM_POLICY_BASE = 0x2000,
KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE,
__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;
* 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.
+ * 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_SYNC_REPLY = 1 << 1,
- KDBUS_MSG_FLAGS_NO_AUTO_START = 1 << 2,
+ KDBUS_MSG_FLAGS_EXPECT_REPLY = 1ULL << 0,
+ KDBUS_MSG_FLAGS_SYNC_REPLY = 1ULL << 1,
+ KDBUS_MSG_FLAGS_NO_AUTO_START = 1ULL << 2,
};
/**
/**
* struct kdbus_msg - the representation of a kdbus message
* @size: Total size of the message
- * @flags: Message flags (KDBUS_MSG_FLAGS_*)
+ * @flags: Message flags (KDBUS_MSG_FLAGS_*), userspace → kernel
+ * @kernel_flags: Supported message flags, kernel → userspace
* @priority: Message queue priority value
* @dst_id: 64-bit ID of the destination connection
* @src_id: 64-bit ID of the source connection
* @timeout_ns: The time to wait for a message reply from the peer.
* If there is no reply, a kernel-generated message
* with an attached KDBUS_ITEM_REPLY_TIMEOUT item
- * is sent to @src_id.
+ * is sent to @src_id. 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
- * @offset_reply: If KDBUS_MSG_FLAGS_WAIT_FOR_REPLY, this field will
+ * @offset_reply: If KDBUS_MSG_FLAGS_EXPECT_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 {
__u64 size;
__u64 flags;
+ __u64 kernel_flags;
__s64 priority;
__u64 dst_id;
__u64 src_id;
* @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.
+ * higher priority (lowest values); if not set,
+ * the priority value is ignored.
*/
enum kdbus_recv_flags {
- KDBUS_RECV_PEEK = 1 << 0,
- KDBUS_RECV_DROP = 1 << 1,
- KDBUS_RECV_USE_PRIORITY = 1 << 2,
+ KDBUS_RECV_PEEK = 1ULL << 0,
+ KDBUS_RECV_DROP = 1ULL << 1,
+ KDBUS_RECV_USE_PRIORITY = 1ULL << 2,
};
/**
* struct kdbus_cmd_recv - struct to de-queue a buffered message
- * @flags: KDBUS_RECV_* flags
+ * @flags: KDBUS_RECV_* flags, userspace → kernel
+ * @kernel_flags: Supported KDBUS_RECV_* flags, kernel → userspace
* @priority: Minimum priority of the messages to de-queue. Lowest
* values have the highest priority.
* @offset: Returned offset in the pool where the message is
- * stored. The user must use KDBUS_CMD_FREE to free
- * the allocated memory.
+ * stored. The user must use KDBUS_CMD_FREE to free
+ * the allocated memory.
+ * @dropped_msgs: In case the KDBUS_CMD_MSG_RECV ioctl returns
+ * -EOVERFLOW, this field will contain the number of
+ * broadcast messages that have been lost since the
+ * last call.
*
* This struct is used with the KDBUS_CMD_MSG_RECV ioctl.
*/
struct kdbus_cmd_recv {
__u64 flags;
+ __u64 kernel_flags;
__s64 priority;
+ union {
+ __u64 offset;
+ __u64 dropped_msgs;
+ };
+} __attribute__((aligned(8)));
+
+/**
+ * struct kdbus_cmd_cancel - struct to cancel a synchronously pending message
+ * @cookie: The cookie of the pending message
+ * @flags: Flags for the free command. Currently unused.
+ *
+ * This struct is used with the KDBUS_CMD_CANCEL ioctl.
+ */
+struct kdbus_cmd_cancel {
+ __u64 cookie;
+ __u64 flags;
+} __attribute__((aligned(8)));
+
+/**
+ * struct kdbus_cmd_free - struct to free a slice of memory in the pool
+ * @offset: The offset of the memory slice, as returned by other
+ * ioctls
+ * @flags: Flags for the free command, userspace → kernel
+ * @kernel_flags: Supported flags of the free command, userspace → kernel
+ *
+ * This struct is used with the KDBUS_CMD_FREE ioctl.
+ */
+struct kdbus_cmd_free {
__u64 offset;
+ __u64 flags;
+ __u64 kernel_flags;
} __attribute__((aligned(8)));
/**
/**
* enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
- * @KDBUS_HELLO_ACCEPT_FD: The connection allows the receiving of
+ * @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 one or multiple names. The
- * provided names are not activated, and are not
- * registered with the name database
+ * policy entries for a name. The provided name
+ * is not activated and not registered with the
+ * name database, it only allows unprivileged
+ * connections to aquire 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 = 1 << 0,
- KDBUS_HELLO_ACTIVATOR = 1 << 1,
- KDBUS_HELLO_POLICY_HOLDER = 1 << 2,
- KDBUS_HELLO_MONITOR = 1 << 3,
+ KDBUS_HELLO_ACCEPT_FD = 1ULL << 0,
+ KDBUS_HELLO_ACTIVATOR = 1ULL << 1,
+ KDBUS_HELLO_POLICY_HOLDER = 1ULL << 2,
+ KDBUS_HELLO_MONITOR = 1ULL << 3,
};
/**
* enum kdbus_attach_flags - flags for metadata attachments
- * @KDBUS_ATTACH_TIMESTAMP: Timestamp
- * @KDBUS_ATTACH_CREDS: Credentials
- * @KDBUS_ATTACH_NAMES: Well-known names
- * @KDBUS_ATTACH_COMM: The "comm" process identifier
- * @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_NAME: The human-readable connection name
+ * @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 = 1 << 0,
- KDBUS_ATTACH_CREDS = 1 << 1,
- KDBUS_ATTACH_NAMES = 1 << 2,
- KDBUS_ATTACH_COMM = 1 << 3,
- KDBUS_ATTACH_EXE = 1 << 4,
- KDBUS_ATTACH_CMDLINE = 1 << 5,
- KDBUS_ATTACH_CGROUP = 1 << 6,
- KDBUS_ATTACH_CAPS = 1 << 7,
- KDBUS_ATTACH_SECLABEL = 1 << 8,
- KDBUS_ATTACH_AUDIT = 1 << 9,
- KDBUS_ATTACH_CONN_NAME = 1 << 10,
+ 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
};
/**
* struct kdbus_cmd_hello - struct to say hello to kdbus
* @size: The total size of the structure
- * @conn_flags: Connection flags (KDBUS_HELLO_*). The kernel will
- * return its capabilities in that field.
- * @attach_flags: Mask of metadata to attach to each message sent
- * (KDBUS_ATTACH_*)
+ * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
+ * @kernel_flags: Supported connection 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
*/
struct kdbus_cmd_hello {
__u64 size;
- __u64 conn_flags;
- __u64 attach_flags;
+ __u64 flags;
+ __u64 kernel_flags;
+ __u64 attach_flags_send;
+ __u64 attach_flags_recv;
__u64 bus_flags;
__u64 id;
__u64 pool_size;
/**
* enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,EP,NS}_MAKE
- * @KDBUS_MAKE_ACCESS_GROUP: Make the device node group-accessible
- * @KDBUS_MAKE_ACCESS_WORLD: Make the device node world-accessible
+ * @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 = 1 << 0,
- KDBUS_MAKE_ACCESS_WORLD = 1 << 1,
+ KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
+ KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
};
/**
* struct kdbus_cmd_make - struct to make a bus, an endpoint or a domain
* @size: The total size of the struct
- * @flags: Properties for the bus/ep/domain to create
+ * @flags: Properties for the bus/ep/domain to create,
+ * userspace → kernel
+ * @kernel_flags: Supported flags for the used command, kernel → userspace
* @items: Items describing details
*
- * This structure is used with the KDBUS_CMD_BUS_MAKE, KDBUS_CMD_EP_MAKE and
- * KDBUS_CMD_DOMAIN_MAKE ioctls.
+ * This structure is used with the KDBUS_CMD_BUS_MAKE and
+ * KDBUS_CMD_ENDPOINT_MAKE ioctls.
*/
struct kdbus_cmd_make {
__u64 size;
__u64 flags;
+ __u64 kernel_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
* @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
*/
enum kdbus_name_flags {
- KDBUS_NAME_REPLACE_EXISTING = 1 << 0,
- KDBUS_NAME_ALLOW_REPLACEMENT = 1 << 1,
- KDBUS_NAME_QUEUE = 1 << 2,
- KDBUS_NAME_IN_QUEUE = 1 << 3,
- KDBUS_NAME_ACTIVATOR = 1 << 4,
+ 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,
};
/**
* 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: 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
+ * @flags: Flags for a name entry (KDBUS_NAME_*),
+ * userspace → kernel, kernel → userspace
+ * @kernel_flags: Supported flags for a name entry, kernel → userspace
+ * @items: Item list, containing the well-known name as
+ * KDBUS_ITEM_NAME
*
* This structure is used with the KDBUS_CMD_NAME_ACQUIRE ioctl.
*/
struct kdbus_cmd_name {
__u64 size;
__u64 flags;
- __u64 owner_id;
+ __u64 kernel_flags;
+ struct kdbus_item items[0];
+} __attribute__((aligned(8)));
+
+/**
+ * struct kdbus_name_info - struct to describe a well-known name
+ * @size: The total size of the struct
+ * @conn_flags: The flags of the owning connection (KDBUS_HELLO_*)
+ * @owner_id: The current owner of the name
+ * @items: Item list, containing the well-known name as
+ * KDBUS_ITEM_OWNED_NAME
+ *
+ * This structure is used as return struct for the KDBUS_CMD_NAME_LIST ioctl.
+ */
+struct kdbus_name_info {
+ __u64 size;
__u64 conn_flags;
- char name[0];
+ __u64 owner_id;
+ struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* @KDBUS_NAME_LIST_QUEUED: All queued-up names
*/
enum kdbus_name_list_flags {
- KDBUS_NAME_LIST_UNIQUE = 1 << 0,
- KDBUS_NAME_LIST_NAMES = 1 << 1,
- KDBUS_NAME_LIST_ACTIVATORS = 1 << 2,
- KDBUS_NAME_LIST_QUEUED = 1 << 3,
+ KDBUS_NAME_LIST_UNIQUE = 1ULL << 0,
+ KDBUS_NAME_LIST_NAMES = 1ULL << 1,
+ KDBUS_NAME_LIST_ACTIVATORS = 1ULL << 2,
+ KDBUS_NAME_LIST_QUEUED = 1ULL << 3,
};
/**
* struct kdbus_cmd_name_list - request a list of name entries
- * @flags: Flags for the query (KDBUS_NAME_LIST_*)
+ * @flags: Flags for the query (KDBUS_NAME_LIST_*),
+ * userspace → kernel
+ * @kernel_flags: Supported flags for queries, kernel → userspace
* @offset: The returned offset in the caller's pool buffer.
* The user must use KDBUS_CMD_FREE to free the
* allocated memory.
*/
struct kdbus_cmd_name_list {
__u64 flags;
+ __u64 kernel_flags;
__u64 offset;
} __attribute__((aligned(8)));
*/
struct kdbus_name_list {
__u64 size;
- struct kdbus_cmd_name names[0];
+ struct kdbus_name_info names[0];
};
/**
- * struct kdbus_cmd_conn_info - struct used for KDBUS_CMD_CONN_INFO ioctl
+ * struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl
* @size: The total size of the struct
- * @flags: KDBUS_ATTACH_* flags
+ * @flags: KDBUS_ATTACH_* flags, userspace → kernel
+ * @kernel_flags: Supported KDBUS_ATTACH_* 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.
* @offset: Returned offset in the caller's pool buffer where the
- * kdbus_conn_info struct result is stored. The user must
+ * kdbus_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 @id is zero.
+ * @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_conn_info.
+ * result in a struct kdbus_info.
*/
-struct kdbus_cmd_conn_info {
+struct kdbus_cmd_info {
__u64 size;
__u64 flags;
+ __u64 kernel_flags;
__u64 id;
__u64 offset;
- char name[0];
+ struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
- * struct kdbus_conn_info - information returned by KDBUS_CMD_CONN_INFO
+ * struct kdbus_info - information returned by KDBUS_CMD_*_INFO
* @size: The total size of the struct
- * @id: The connection's 64-bit ID
- * @flags: The connection's flags
+ * @id: The connection's or bus' 64-bit ID
+ * @flags: The connection's or bus' flags
* @items: A list of struct kdbus_item
*
* Note that the user is responsible for freeing the allocated memory with
* the KDBUS_CMD_FREE ioctl.
*/
-struct kdbus_conn_info {
+struct kdbus_info {
__u64 size;
__u64 id;
__u64 flags;
/**
* struct kdbus_cmd_update - update flags of a connection
* @size: The total size of the struct
+ * @flags: Flags for the update command, userspace → kernel
+ * @kernel_flags: Supported flags for this command, kernel → userspace
* @items: A list of struct kdbus_item
*
* This struct is used with the KDBUS_CMD_CONN_UPDATE ioctl.
*/
struct kdbus_cmd_update {
__u64 size;
+ __u64 flags;
+ __u64 kernel_flags;
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
- * @owner_id: Privileged users may (de)register matches on behalf
- * of other peers
* @cookie: Userspace supplied cookie. When removing, the cookie
* identifies the match to remove
+ * @flags: Flags for match command (KDBUS_MATCH_*),
+ * userspace → kernel
+ * @kernel_flags: Supported flags of the used command, kernel → userspace
* @items: A list of items for additional information
*
- * This structure is used with the KDBUS_CMD_ADD_MATCH and
- * KDBUS_CMD_REMOVE_MATCH ioctl.
+ * This structure is used with the KDBUS_CMD_MATCH_ADD and
+ * KDBUS_CMD_MATCH_REMOVE ioctl.
*/
struct kdbus_cmd_match {
__u64 size;
- __u64 owner_id;
__u64 cookie;
+ __u64 flags;
+ __u64 kernel_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
- * struct kdbus_cmd_memfd_make - create a kdbus memfd
- * @size: The total size of the struct
- * @file_size: The initial file size
- * @fd: The returned file descriptor number
- * @__pad: Padding to ensure proper alignement
- * @items: A list of items for additional information
- *
- * This structure is used with the KDBUS_CMD_MEMFD_NEW ioctl.
- */
-struct kdbus_cmd_memfd_make {
- __u64 size;
- __u64 file_size;
- int fd;
- __u32 __pad;
- struct kdbus_item items[0];
-} __attribute__((aligned(8)));
-
-/**
- * enum kdbus_ioctl_type - Ioctl API
- * @KDBUS_CMD_BUS_MAKE: After opening the "control" device node, this
- * command creates a new bus with the specified
+ * 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 "control" device node
- * is closed.
- * @KDBUS_CMD_DOMAIN_MAKE: Similar to KDBUS_CMD_BUS_MAKE, but it creates a
- * new kdbus domain.
- * @KDBUS_CMD_EP_MAKE: Creates a new named special endpoint to talk to
+ * 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_HELLO: By opening the bus device node a connection is
+ * 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_BYEBYE: Disconnect a connection. If the connection's
- * message list is empty, the calls succeeds, and
- * the handle is rendered unusable. Otherwise,
- * -EAGAIN is returned without any further side-
- * effects.
- * @KDBUS_CMD_MSG_SEND: Send a message and pass data from userspace to
+ * 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_MSG_SEND: Send a message and pass data from userspace to
* the kernel.
- * @KDBUS_CMD_MSG_RECV: Receive a message from the kernel which is
+ * KDBUS_CMD_MSG_RECV: Receive a message from the kernel which is
* placed in the receiver's pool.
- * @KDBUS_CMD_MSG_CANCEL: Cancel a pending request of a message that
- * blocks while waiting for a reply. The parameter
- * denotes the cookie of the message in flight.
- * @KDBUS_CMD_FREE: Release the allocated memory in the receiver's
+ * KDBUS_CMD_MSG_CANCEL: Cancel a pending request of a message that
+ * blocks while waiting for a reply. The parameter
+ * denotes the cookie of the message in flight.
+ * KDBUS_CMD_FREE: Release the allocated memory in the receiver's
* pool.
- * @KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
+ * 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
+ * KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
* currently owns.
- * @KDBUS_CMD_NAME_LIST: Retrieve the list of all currently registered
+ * KDBUS_CMD_NAME_LIST: Retrieve the list of all currently registered
* well-known and unique names.
- * @KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the
+ * 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_CONN_UPDATE: Update the properties of a connection. Used to
- * update the metadata subscription.
- * @KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
+ * KDBUS_CMD_CONN_UPDATE: Update the properties of a connection. Used to
+ * update the metadata subscription mask and
+ * policy.
+ * KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus
+ * a connection is attached to.
+ * KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
+ * to update the policy.
+ * 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.
- * @KDBUS_CMD_EP_POLICY_SET: Set the policy of an endpoint. It is used to
- * restrict the access for endpoints created with
- * KDBUS_CMD_EP_MAKE.
- * @KDBUS_CMD_MEMFD_NEW: Return a new file descriptor which provides an
- * anonymous shared memory file and which can be
- * used to pass around larger chunks of data.
- * Kdbus memfd files can be sealed, which allows
- * the receiver to trust the data it has received.
- * Kdbus memfd files expose only very limited
- * operations, they can be mmap()ed, seek()ed,
- * (p)read(v)() and (p)write(v)(); most other
- * common file operations are not implemented.
- * Special caution needs to be taken with
- * read(v)()/write(v)() on a shared file; the
- * underlying file position is always shared
- * between all users of the file and race against
- * each other, pread(v)()/pwrite(v)() avoid these
- * issues.
- * @KDBUS_CMD_MEMFD_SIZE_GET: Return the size of the underlying file, which
- * changes with write().
- * @KDBUS_CMD_MEMFD_SIZE_SET: Truncate the underlying file to the specified
- * size.
- * @KDBUS_CMD_MEMFD_SEAL_GET: Return the state of the file sealing.
- * @KDBUS_CMD_MEMFD_SEAL_SET: Seal or break a seal of the file. Only files
- * which are not shared with other processes and
- * which are currently not mapped can be sealed.
- * The current process needs to be the one and
- * single owner of the file, the sealing cannot
- * be changed as long as the file is shared.
- */
-enum kdbus_ioctl_type {
- KDBUS_CMD_BUS_MAKE = _IOW (KDBUS_IOC_MAGIC, 0x00, struct kdbus_cmd_make),
- KDBUS_CMD_DOMAIN_MAKE = _IOW (KDBUS_IOC_MAGIC, 0x10, struct kdbus_cmd_make),
- KDBUS_CMD_EP_MAKE = _IOW (KDBUS_IOC_MAGIC, 0x20, struct kdbus_cmd_make),
-
- KDBUS_CMD_HELLO = _IOWR(KDBUS_IOC_MAGIC, 0x30, struct kdbus_cmd_hello),
- KDBUS_CMD_BYEBYE = _IO (KDBUS_IOC_MAGIC, 0x31),
-
- KDBUS_CMD_MSG_SEND = _IOWR(KDBUS_IOC_MAGIC, 0x40, struct kdbus_msg),
- KDBUS_CMD_MSG_RECV = _IOWR(KDBUS_IOC_MAGIC, 0x41, struct kdbus_cmd_recv),
- KDBUS_CMD_MSG_CANCEL = _IOW (KDBUS_IOC_MAGIC, 0x42, __u64 *),
- KDBUS_CMD_FREE = _IOW (KDBUS_IOC_MAGIC, 0x43, __u64 *),
-
- KDBUS_CMD_NAME_ACQUIRE = _IOWR(KDBUS_IOC_MAGIC, 0x50, struct kdbus_cmd_name),
- KDBUS_CMD_NAME_RELEASE = _IOW (KDBUS_IOC_MAGIC, 0x51, struct kdbus_cmd_name),
- KDBUS_CMD_NAME_LIST = _IOWR(KDBUS_IOC_MAGIC, 0x52, struct kdbus_cmd_name_list),
-
- KDBUS_CMD_CONN_INFO = _IOWR(KDBUS_IOC_MAGIC, 0x60, struct kdbus_cmd_conn_info),
- KDBUS_CMD_CONN_UPDATE = _IOW (KDBUS_IOC_MAGIC, 0x61, struct kdbus_cmd_update),
-
- KDBUS_CMD_EP_UPDATE = _IOW (KDBUS_IOC_MAGIC, 0x71, struct kdbus_cmd_update),
-
- KDBUS_CMD_MATCH_ADD = _IOW (KDBUS_IOC_MAGIC, 0x80, struct kdbus_cmd_match),
- KDBUS_CMD_MATCH_REMOVE = _IOW (KDBUS_IOC_MAGIC, 0x81, struct kdbus_cmd_match),
-
- KDBUS_CMD_MEMFD_NEW = _IOWR(KDBUS_IOC_MAGIC, 0xc0, struct kdbus_cmd_memfd_make),
- KDBUS_CMD_MEMFD_SIZE_GET = _IOR (KDBUS_IOC_MAGIC, 0xc1, __u64 *),
- KDBUS_CMD_MEMFD_SIZE_SET = _IOW (KDBUS_IOC_MAGIC, 0xc2, __u64 *),
- KDBUS_CMD_MEMFD_SEAL_GET = _IOR (KDBUS_IOC_MAGIC, 0xc3, int *),
- KDBUS_CMD_MEMFD_SEAL_SET = _IO (KDBUS_IOC_MAGIC, 0xc4),
-};
-
-/*
- * errno - api error codes
- * @E2BIG: A message contains too many records or items.
- * @EADDRINUSE: A well-known bus name is already taken by another
- * connection.
- * @EADDRNOTAVAIL: A message flagged not to activate a service, addressed
- * a service which is not currently running.
- * @EAGAIN: No messages are queued at the moment.
- * @EALREADY: A requested name is already owned by the connection,
- * a connection is already disconnected, memfd is already
- * sealed or has the requested size.
- * @EBADF: File descriptors passed with the message are not valid.
- * @EBADFD: A bus connection is in a corrupted state.
- * @EBADMSG: Passed data contains a combination of conflicting or
- * inconsistent types.
- * @EBUSY: The user tried to say BYEBYE to a connection, but the
- * connection had a non-empty message list.
- * @ECANCELED: A synchronous message sending was cancelled.
- * @ECONNRESET: A connection is shut down, no further operations are
- * possible.
- * @ECOMM: A peer does not accept the file descriptors addressed
- * to it.
- * @EDESTADDRREQ: The well-known bus name is required but missing.
- * @EDOM: The size of data does not match the expectations. Used
- * for bloom bit field sizes.
- * @EEXIST: A requested domain, bus or endpoint with the same
- * name already exists. A specific data type, which is
- * only expected once, is provided multiple times.
- * @EFAULT: The supplied memory could not be accessed, or the data
- * is not properly aligned.
- * @EINVAL: The provided data does not match its type or other
- * expectations, like a string which is not NUL terminated,
- * or a string length that points behind the first
- * \0-byte in the string.
- * @EMEDIUMTYPE: A file descriptor which is not a kdbus memfd was
- * refused to send as KDBUS_MSG_PAYLOAD_MEMFD.
- * @EMFILE: Too many file descriptors have been supplied with a
- * message.
- * Too many connections or buses are created for a given
- * user.
- * @EMLINK: Too many requests from this connection to other peers
- * are queued and waiting for a reply
- * @EMSGSIZE: The supplied data is larger than the allowed maximum
- * size.
- * @ENAMETOOLONG: The requested name is larger than the allowed maximum
- * size.
- * @ENOBUFS: There is no space left for the submitted data to fit
- * into the receiver's pool.
- * @ENOENT: The name to query information about is currently not on
- * the bus.
- * @ENOMEM: Out of memory.
- * @ENOMSG: The queue is not empty, but no message with a matching
- * priority is currently queued.
- * @ENOSYS: The requested functionality is not available.
- * @ENOTSUPP: The feature negotiation failed, a not supported feature
- * was requested, or an unknown item type was received.
- * @ENOTTY: An unknown ioctl command was received.
- * @ENOTUNIQ: A specific data type was addressed to a broadcast
- * address, but only direct addresses support this kind of
- * data.
- * @ENXIO: A unique address does not exist, or an offset in the
- * receiver's pool does not represent a queued message.
- * @EPERM: The policy prevented an operation. The requested
- * resource is owned by another entity.
- * @EPIPE: When sending a message, a synchronous reply from the
- * receiving connection was expected but the connection
- * died before answering.
- * @ESHUTDOWN: A domain, bus or endpoint is currently shutting down;
- * no further operations will be possible.
- * @ESRCH: A requested well-known bus name is not found.
- * @ETIMEDOUT: A synchronous wait for a message reply did not arrive
- * within the specified time frame.
- * @ETXTBSY: A kdbus memfd file cannot be sealed or the seal removed,
- * because it is shared with other processes or still
- * mmap()ed.
- * @EXFULL: The size limits in the pool are reached, no data of
- * the size tried to submit can be queued.
- */
-#endif
+ * KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages.
+ */
+#define KDBUS_CMD_BUS_MAKE _IOW(KDBUS_IOCTL_MAGIC, 0x00, \
+ struct kdbus_cmd_make)
+#define KDBUS_CMD_ENDPOINT_MAKE _IOW(KDBUS_IOCTL_MAGIC, 0x10, \
+ struct kdbus_cmd_make)
+
+#define KDBUS_CMD_HELLO _IOWR(KDBUS_IOCTL_MAGIC, 0x20, \
+ struct kdbus_cmd_hello)
+#define KDBUS_CMD_BYEBYE _IO(KDBUS_IOCTL_MAGIC, 0x21) \
+
+#define KDBUS_CMD_MSG_SEND _IOWR(KDBUS_IOCTL_MAGIC, 0x30, \
+ struct kdbus_msg)
+#define KDBUS_CMD_MSG_RECV _IOWR(KDBUS_IOCTL_MAGIC, 0x31, \
+ struct kdbus_cmd_recv)
+#define KDBUS_CMD_MSG_CANCEL _IOW(KDBUS_IOCTL_MAGIC, 0x32, \
+ struct kdbus_cmd_cancel)
+#define KDBUS_CMD_FREE _IOW(KDBUS_IOCTL_MAGIC, 0x33, \
+ struct kdbus_cmd_free)
+
+#define KDBUS_CMD_NAME_ACQUIRE _IOWR(KDBUS_IOCTL_MAGIC, 0x40, \
+ struct kdbus_cmd_name)
+#define KDBUS_CMD_NAME_RELEASE _IOW(KDBUS_IOCTL_MAGIC, 0x41, \
+ struct kdbus_cmd_name)
+#define KDBUS_CMD_NAME_LIST _IOWR(KDBUS_IOCTL_MAGIC, 0x42, \
+ struct kdbus_cmd_name_list)
+
+#define KDBUS_CMD_CONN_INFO _IOWR(KDBUS_IOCTL_MAGIC, 0x50, \
+ struct kdbus_cmd_info)
+#define KDBUS_CMD_CONN_UPDATE _IOW(KDBUS_IOCTL_MAGIC, 0x51, \
+ struct kdbus_cmd_update)
+#define KDBUS_CMD_BUS_CREATOR_INFO _IOWR(KDBUS_IOCTL_MAGIC, 0x52, \
+ struct kdbus_cmd_info)
+
+#define KDBUS_CMD_ENDPOINT_UPDATE _IOW(KDBUS_IOCTL_MAGIC, 0x61, \
+ struct kdbus_cmd_update)
+
+#define KDBUS_CMD_MATCH_ADD _IOW(KDBUS_IOCTL_MAGIC, 0x70, \
+ struct kdbus_cmd_match)
+#define KDBUS_CMD_MATCH_REMOVE _IOW(KDBUS_IOCTL_MAGIC, 0x71, \
+ struct kdbus_cmd_match)
+
+#endif /* _KDBUS_UAPI_H_ */
~ianmdlvl / elogind.git / blobdiff