/*
- * Copyright (C) 2013-2014 Kay Sievers
- * Copyright (C) 2013-2014 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- * Copyright (C) 2013-2014 Linux Foundation
- * Copyright (C) 2013-2014 Lennart Poettering
- * Copyright (C) 2013-2014 Daniel Mack <daniel@zonque.org>
- * Copyright (C) 2013-2014 David Herrmann <dh.herrmann@gmail.com>
- *
* 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_UAPI_H_
#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
__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 vec;
struct kdbus_creds creds;
struct kdbus_audit audit;
+ struct kdbus_caps caps;
struct kdbus_timestamp timestamp;
struct kdbus_name name;
struct kdbus_bloom_parameter bloom_parameter;
/**
* 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
struct kdbus_msg {
__u64 size;
__u64 flags;
+ __u64 kernel_flags;
__s64 priority;
__u64 dst_id;
__u64 src_id;
/**
* 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
*/
struct kdbus_cmd_recv {
__u64 flags;
+ __u64 kernel_flags;
__s64 priority;
__u64 offset;
} __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_policy_access_type - permissions of a policy record
* @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
* @KDBUS_ATTACH_CREDS: Credentials
* @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
* @KDBUS_ATTACH_NAMES: Well-known names
- * @KDBUS_ATTACH_COMM: The "comm" process identifier
+ * @KDBUS_ATTACH_COMM_TID: The "comm" process identifier of the TID
+ * @KDBUS_ATTACH_COMM_PID: 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_CREDS = 1ULL << 1,
KDBUS_ATTACH_AUXGROUPS = 1ULL << 2,
KDBUS_ATTACH_NAMES = 1ULL << 3,
- KDBUS_ATTACH_COMM = 1ULL << 4,
- KDBUS_ATTACH_EXE = 1ULL << 5,
- KDBUS_ATTACH_CMDLINE = 1ULL << 6,
- KDBUS_ATTACH_CGROUP = 1ULL << 7,
- KDBUS_ATTACH_CAPS = 1ULL << 8,
- KDBUS_ATTACH_SECLABEL = 1ULL << 9,
- KDBUS_ATTACH_AUDIT = 1ULL << 10,
- KDBUS_ATTACH_CONN_NAME = 1ULL << 11,
- _KDBUS_ATTACH_ALL = (1ULL << 12) - 1,
+ KDBUS_ATTACH_TID_COMM = 1ULL << 4,
+ KDBUS_ATTACH_PID_COMM = 1ULL << 5,
+ KDBUS_ATTACH_EXE = 1ULL << 6,
+ KDBUS_ATTACH_CMDLINE = 1ULL << 7,
+ KDBUS_ATTACH_CGROUP = 1ULL << 8,
+ KDBUS_ATTACH_CAPS = 1ULL << 9,
+ KDBUS_ATTACH_SECLABEL = 1ULL << 10,
+ KDBUS_ATTACH_AUDIT = 1ULL << 11,
+ KDBUS_ATTACH_CONN_NAME = 1ULL << 12,
+ _KDBUS_ATTACH_ALL = (1ULL << 13) - 1,
};
/**
* struct kdbus_cmd_hello - struct to say hello to kdbus
* @size: The total size of the structure
- * @conn_flags: Connection flags (KDBUS_HELLO_*).
+ * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
+ * @kernel_flags: Supported connection flags, kernel → userspace
* @attach_flags: Mask of metadata to attach to each message sent
* (KDBUS_ATTACH_*)
* @bus_flags: The flags field copied verbatim from the original
*/
struct kdbus_cmd_hello {
__u64 size;
- __u64 conn_flags;
+ __u64 flags;
+ __u64 kernel_flags;
__u64 attach_flags;
__u64 bus_flags;
__u64 id;
/**
* 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, KDBUS_CMD_ENDPOINT_MAKE
+ * and KDBUS_CMD_DOMAIN_MAKE ioctls.
*/
struct kdbus_cmd_make {
__u64 size;
__u64 flags;
+ __u64 kernel_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* 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
- * @conn_flags: The flags of the owning connection (KDBUS_HELLO_*)
+ * @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
*
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
+ * @flags: Flags for a name entry (KDBUS_NAME_*),
+ * @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_NAME
+ *
+ * This structure is used as return struct for the KDBUS_CMD_NAME_LIST ioctl.
+ */
+struct kdbus_name_info {
+ __u64 size;
+ __u64 flags;
__u64 conn_flags;
+ __u64 owner_id;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* 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;
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
* @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 cookie;
+ __u64 flags;
+ __u64 kernel_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
* 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
+ * @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_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
+ * @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.
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,
+ KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x20,
struct kdbus_cmd_make),
KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x30,
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_MSG_CANCEL = _IOW(KDBUS_IOCTL_MAGIC, 0x42,
+ struct kdbus_cmd_cancel),
+ KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x43,
+ struct kdbus_cmd_free),
KDBUS_CMD_NAME_ACQUIRE = _IOWR(KDBUS_IOCTL_MAGIC, 0x50,
struct kdbus_cmd_name),
struct kdbus_cmd_name_list),
KDBUS_CMD_CONN_INFO = _IOWR(KDBUS_IOCTL_MAGIC, 0x60,
- struct kdbus_cmd_conn_info),
+ struct kdbus_cmd_info),
KDBUS_CMD_CONN_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x61,
struct kdbus_cmd_update),
+ KDBUS_CMD_BUS_CREATOR_INFO = _IOWR(KDBUS_IOCTL_MAGIC, 0x62,
+ struct kdbus_cmd_info),
- KDBUS_CMD_EP_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x71,
+ KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x71,
struct kdbus_cmd_update),
KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0x80,
~ianmdlvl / elogind.git / blobdiff