X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flibsystemd%2Fsd-bus%2Fkdbus.h;h=b060330cb61fdd10c106855f8d2ebc021acec2ea;hp=fe0bb48728b163a22c957d9e7223e9ef21750b03;hb=b5af2aca120f1bf13cffc270803c2232918dd967;hpb=607553f9306286fdccf0b356bc3d1087adfe21c4 diff --git a/src/libsystemd/sd-bus/kdbus.h b/src/libsystemd/sd-bus/kdbus.h index fe0bb4872..b060330cb 100644 --- a/src/libsystemd/sd-bus/kdbus.h +++ b/src/libsystemd/sd-bus/kdbus.h @@ -23,7 +23,7 @@ #include #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) @@ -105,7 +105,7 @@ struct kdbus_audit { /** * struct kdbus_timestamp - * @seqnum: Global per-namespace message sequence number + * @seqnum: Global per-domain message sequence number * @monotonic_ns: Monotonic timestamp, in nanoseconds * @realtime_ns: Realtime timestamp, in nanoseconds * @@ -136,6 +136,26 @@ struct kdbus_vec { }; }; +/** + * 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; +}; + +/** + * 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]; +}; + /** * struct kdbus_memfd - a kdbus memfd * @size: The memfd's size @@ -153,8 +173,8 @@ struct kdbus_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 @@ -167,35 +187,16 @@ struct kdbus_name { /** * 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 - * - * Embedded in: - * struct kdbus_policy */ struct kdbus_policy_access { __u64 type; /* USER, GROUP, WORLD */ - __u64 bits; /* RECV, SEND, OWN */ + __u64 access; /* OWN, TALK, SEE */ __u64 id; /* uid, gid, 0 */ }; -/** - * struct kdbus_policy - a policy item - * @access: Policy access details - * @name: Well-known name to grant access to - * - * Attached to: - * KDBUS_POLICY_ACCESS - * KDBUS_ITEM_POLICY_NAME - */ -struct kdbus_policy { - union { - struct kdbus_policy_access access; - char name[0]; - }; -}; - /** * enum kdbus_item_type - item types to chain data in a list * @_KDBUS_ITEM_NULL: Uninitialized/invalid @@ -204,19 +205,25 @@ struct kdbus_policy { * @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: For broadcasts, carries bloom filter - * @KDBUS_ITEM_BLOOM_SIZE: Desired bloom size, used by KDBUS_CMD_BUS_MAKE + * @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 namespace, bus, endpoint + * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint * @KDBUS_ITEM_MEMFD_NAME: The human readable name of a memfd (debugging) - * @_KDBUS_ITEM_POLICY_BASE: Start of policy items - * @KDBUS_ITEM_POLICY_NAME: Policy in struct kdbus_policy - * @KDBUS_ITEM_POLICY_ACCESS: Policy in struct kdbus_policy + * @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_AUXGROUPS: Auxiliary process groups * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier * @KDBUS_ITEM_EXE: The path of the executable @@ -226,6 +233,8 @@ struct kdbus_policy { * @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 @@ -242,21 +251,20 @@ enum kdbus_item_type { KDBUS_ITEM_PAYLOAD_OFF, KDBUS_ITEM_PAYLOAD_MEMFD, KDBUS_ITEM_FDS, - KDBUS_ITEM_BLOOM, - KDBUS_ITEM_BLOOM_SIZE, + KDBUS_ITEM_BLOOM_PARAMETER, + KDBUS_ITEM_BLOOM_FILTER, + KDBUS_ITEM_BLOOM_MASK, KDBUS_ITEM_DST_NAME, KDBUS_ITEM_MAKE_NAME, KDBUS_ITEM_MEMFD_NAME, + KDBUS_ITEM_ATTACH_FLAGS, - _KDBUS_ITEM_POLICY_BASE = 0x1000, - KDBUS_ITEM_POLICY_NAME = _KDBUS_ITEM_POLICY_BASE, - KDBUS_ITEM_POLICY_ACCESS, - - _KDBUS_ITEM_ATTACH_BASE = 0x2000, + _KDBUS_ITEM_ATTACH_BASE = 0x1000, KDBUS_ITEM_NAME = _KDBUS_ITEM_ATTACH_BASE, KDBUS_ITEM_ID, KDBUS_ITEM_TIMESTAMP, KDBUS_ITEM_CREDS, + KDBUS_ITEM_AUXGROUPS, KDBUS_ITEM_PID_COMM, KDBUS_ITEM_TID_COMM, KDBUS_ITEM_EXE, @@ -267,7 +275,10 @@ enum kdbus_item_type { KDBUS_ITEM_AUDIT, KDBUS_ITEM_CONN_NAME, - _KDBUS_ITEM_KERNEL_BASE = 0x3000, + _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, @@ -291,14 +302,15 @@ enum kdbus_item_type { * @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_NAME - * KDBUS_ITEM_POLICY_ACCESS + * @policy: KDBUS_ITEM_POLICY_ACCESS */ struct kdbus_item { __u64 size; @@ -315,11 +327,13 @@ struct kdbus_item { struct kdbus_audit audit; 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 policy; + struct kdbus_policy_access policy_access; }; }; @@ -331,15 +345,15 @@ struct kdbus_item { * 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 */ @@ -376,7 +390,7 @@ enum kdbus_payload_type { * @cookie_reply: A reply to the requesting message with the same * cookie. The requesting connection can match its * request and the reply with this value - * @offset_reply: If KDBUS_MSG_FLAGS_WAIT_FOR_REPLY, this field will + * @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 @@ -407,8 +421,8 @@ struct kdbus_msg { * @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, @@ -422,8 +436,8 @@ enum kdbus_recv_flags { * @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. * * This struct is used with the KDBUS_CMD_MSG_RECV ioctl. */ @@ -449,30 +463,18 @@ enum kdbus_policy_access_type { /** * enum kdbus_policy_access_flags - mode flags - * @KDBUS_POLICY_RECV: Allow receive - * @KDBUS_POLICY_SEND: Allow send * @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_RECV = 1 << 2, - KDBUS_POLICY_SEND = 1 << 1, - KDBUS_POLICY_OWN = 1 << 0, + KDBUS_POLICY_SEE = 0, + KDBUS_POLICY_TALK, + KDBUS_POLICY_OWN, }; -/** - * struct kdbus_cmd_policy - a series of policies to upload - * @size: The total size of the structure - * @policies: The policies to upload - * - * A KDBUS_POLICY_NAME must always preceeds a KDBUS_POLICY_ACCESS entry. - * A new KDBUS_POLICY_NAME can be added after KDBUS_POLICY_ACCESS for - * chaining multiple policies together. - */ -struct kdbus_cmd_policy { - __u64 size; - struct kdbus_item policies[0]; -} __attribute__((aligned(8))); - /** * enum kdbus_hello_flags - flags for struct kdbus_cmd_hello * @KDBUS_HELLO_ACCEPT_FD: The connection allows the receiving of @@ -480,19 +482,27 @@ struct kdbus_cmd_policy { * @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 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_MONITOR = 1 << 2, + KDBUS_HELLO_POLICY_HOLDER = 1 << 2, + KDBUS_HELLO_MONITOR = 1 << 3, }; /** * enum kdbus_attach_flags - flags for metadata attachments * @KDBUS_ATTACH_TIMESTAMP: Timestamp * @KDBUS_ATTACH_CREDS: Credentials + * @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups * @KDBUS_ATTACH_NAMES: Well-known names * @KDBUS_ATTACH_COMM: The "comm" process identifier * @KDBUS_ATTACH_EXE: The path of the executable @@ -502,19 +512,22 @@ enum kdbus_hello_flags { * @KDBUS_ATTACH_SECLABEL: The security label * @KDBUS_ATTACH_AUDIT: The audit IDs * @KDBUS_ATTACH_CONN_NAME: The human-readable connection name + * @_KDBUS_ATTACH_ALL: All of the above */ 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_AUXGROUPS = 1 << 2, + KDBUS_ATTACH_NAMES = 1 << 3, + KDBUS_ATTACH_COMM = 1 << 4, + KDBUS_ATTACH_EXE = 1 << 5, + KDBUS_ATTACH_CMDLINE = 1 << 6, + KDBUS_ATTACH_CGROUP = 1 << 7, + KDBUS_ATTACH_CAPS = 1 << 8, + KDBUS_ATTACH_SECLABEL = 1 << 9, + KDBUS_ATTACH_AUDIT = 1 << 10, + KDBUS_ATTACH_CONN_NAME = 1 << 11, + _KDBUS_ATTACH_ALL = (1 << 12) - 1, }; /** @@ -529,10 +542,10 @@ enum kdbus_attach_flags { * to do negotiation of features of the payload that is * transferred (kernel → userspace) * @id: The ID of this connection (kernel → userspace) - * @bloom_size: The bloom filter size chosen by the owner - * (kernel → userspace) * @pool_size: Size of the connection's buffer where the received * messages are placed + * @bloom: The bloom properties of the bus, specified + * by the bus creator (kernel → userspace) * @id128: Unique 128-bit ID of the bus (kernel → userspace) * @items: A list of items * @@ -544,27 +557,30 @@ struct kdbus_cmd_hello { __u64 attach_flags; __u64 bus_flags; __u64 id; - __u64 bloom_size; __u64 pool_size; + struct kdbus_bloom_parameter bloom; __u8 id128[16]; struct kdbus_item items[0]; } __attribute__((aligned(8))); -/* Flags for KDBUS_CMD_{BUS,EP,NS}_MAKE */ +/** + * 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 + */ enum kdbus_make_flags { KDBUS_MAKE_ACCESS_GROUP = 1 << 0, KDBUS_MAKE_ACCESS_WORLD = 1 << 1, - KDBUS_MAKE_POLICY_OPEN = 1 << 2, }; /** - * struct kdbus_cmd_make - struct to make a bus, an endpoint or a namespace + * 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/ns to create + * @flags: Properties for the bus/ep/domain to create * @items: Items describing details * * This structure is used with the KDBUS_CMD_BUS_MAKE, KDBUS_CMD_EP_MAKE and - * KDBUS_CMD_NS_MAKE ioctls. + * KDBUS_CMD_DOMAIN_MAKE ioctls. */ struct kdbus_cmd_make { __u64 size; @@ -592,9 +608,7 @@ enum kdbus_name_flags { * struct kdbus_cmd_name - struct to describe a well-known name * @size: The total size of the struct * @flags: Flags for a name entry (KDBUS_NAME_*) - * @owner_id: The current owner of the name. For requests, - * privileged users may set this field to - * (de)register names on behalf of other connections. + * @owner_id: The current owner of the name. * @conn_flags: The flags of the owning connection (KDBUS_HELLO_*) * @name: The well-known name * @@ -691,11 +705,21 @@ struct kdbus_conn_info { struct kdbus_item items[0]; }; +/** + * struct kdbus_cmd_update - update flags of a connection + * @size: The total size of the struct + * @items: A list of struct kdbus_item + * + * This struct is used with the KDBUS_CMD_CONN_UPDATE ioctl. + */ +struct kdbus_cmd_update { + __u64 size; + struct kdbus_item items[0]; +} __attribute__((aligned(8))); + /** * 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 * @items: A list of items for additional information @@ -705,7 +729,6 @@ struct kdbus_conn_info { */ struct kdbus_cmd_match { __u64 size; - __u64 owner_id; __u64 cookie; struct kdbus_item items[0]; } __attribute__((aligned(8))); @@ -735,8 +758,8 @@ struct kdbus_cmd_memfd_make { * name. The bus is immediately shut down and * cleaned up when the opened "control" device node * is closed. - * @KDBUS_CMD_NS_MAKE: Similar to KDBUS_CMD_BUS_MAKE, but it creates a - * new kdbus namespace. + * @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 * the bus. Such endpoints usually carry a more * restrictive policy and grant restricted access @@ -753,6 +776,9 @@ struct kdbus_cmd_memfd_make { * the kernel. * @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 * pool. * @KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with @@ -767,12 +793,14 @@ struct kdbus_cmd_memfd_make { * 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 mask and + * policy. + * @KDBUS_CMD_EP_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. @@ -801,33 +829,50 @@ struct kdbus_cmd_memfd_make { * 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_NS_MAKE = _IOR (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 = _IOW (KDBUS_IOC_MAGIC, 0x40, struct kdbus_msg), - KDBUS_CMD_MSG_RECV = _IOWR(KDBUS_IOC_MAGIC, 0x41, struct kdbus_cmd_recv), - KDBUS_CMD_FREE = _IOW (KDBUS_IOC_MAGIC, 0x42, __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_MATCH_ADD = _IOW (KDBUS_IOC_MAGIC, 0x70, struct kdbus_cmd_match), - KDBUS_CMD_MATCH_REMOVE = _IOW (KDBUS_IOC_MAGIC, 0x71, struct kdbus_cmd_match), - - KDBUS_CMD_EP_POLICY_SET = _IOW (KDBUS_IOC_MAGIC, 0x80, struct kdbus_cmd_policy), - - 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), + KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00, + struct kdbus_cmd_make), + KDBUS_CMD_DOMAIN_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10, + struct kdbus_cmd_make), + KDBUS_CMD_EP_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x20, + struct kdbus_cmd_make), + + KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x30, + struct kdbus_cmd_hello), + KDBUS_CMD_BYEBYE = _IO(KDBUS_IOCTL_MAGIC, 0x31), + + KDBUS_CMD_MSG_SEND = _IOWR(KDBUS_IOCTL_MAGIC, 0x40, + struct kdbus_msg), + KDBUS_CMD_MSG_RECV = _IOWR(KDBUS_IOCTL_MAGIC, 0x41, + struct kdbus_cmd_recv), + KDBUS_CMD_MSG_CANCEL = _IOW(KDBUS_IOCTL_MAGIC, 0x42, __u64 *), + KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x43, __u64 *), + + KDBUS_CMD_NAME_ACQUIRE = _IOWR(KDBUS_IOCTL_MAGIC, 0x50, + struct kdbus_cmd_name), + KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0x51, + struct kdbus_cmd_name), + KDBUS_CMD_NAME_LIST = _IOWR(KDBUS_IOCTL_MAGIC, 0x52, + struct kdbus_cmd_name_list), + + KDBUS_CMD_CONN_INFO = _IOWR(KDBUS_IOCTL_MAGIC, 0x60, + struct kdbus_cmd_conn_info), + KDBUS_CMD_CONN_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x61, + struct kdbus_cmd_update), + + KDBUS_CMD_EP_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x71, + struct kdbus_cmd_update), + + KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0x80, + struct kdbus_cmd_match), + KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0x81, + struct kdbus_cmd_match), + + KDBUS_CMD_MEMFD_NEW = _IOWR(KDBUS_IOCTL_MAGIC, 0xc0, + struct kdbus_cmd_memfd_make), + KDBUS_CMD_MEMFD_SIZE_GET = _IOR(KDBUS_IOCTL_MAGIC, 0xc1, __u64 *), + KDBUS_CMD_MEMFD_SIZE_SET = _IOW(KDBUS_IOCTL_MAGIC, 0xc2, __u64 *), + KDBUS_CMD_MEMFD_SEAL_GET = _IOR(KDBUS_IOCTL_MAGIC, 0xc3, int *), + KDBUS_CMD_MEMFD_SEAL_SET = _IO(KDBUS_IOCTL_MAGIC, 0xc4), }; /* @@ -838,24 +883,29 @@ enum kdbus_ioctl_type { * @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 the size of the bloom filter bit field. - * @EEXIST: A requested namespace, bus or endpoint with the same + * 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. + * @EFAULT: The supplied memory could not be accessed, the data + * is not properly aligned, or the current task's memory + * is inaccessible. * @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 @@ -864,6 +914,8 @@ enum kdbus_ioctl_type { * 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 @@ -872,25 +924,29 @@ enum kdbus_ioctl_type { * 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. + * @ENOENT: The to be cancelled message was not found. * @ENOMEM: Out of memory. * @ENOMSG: The queue is not empty, but no message with a matching - * priority is currently queued. + * 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. + * @EOPNOTSUPP: The feature negotiation failed, a not supported feature + * was requested, or an unknown item type was received. * @EPERM: The policy prevented an operation. The requested * resource is owned by another entity. - * @ESHUTDOWN: A namespace or endpoint is currently shutting down; + * @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.