X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flibsystemd%2Fsd-bus%2Fkdbus.h;h=1ea4329ea2642bbd572c5937624f389028ed169b;hp=e9f7d44bcb1a3a2236dc5f85000abf3a9fa34a26;hb=1a2409e262da65a4b0ca8ab18fcf5eabd2d404ca;hpb=1d49b5aea98ad0ad3ccafc3f83943811219729e0 diff --git a/src/libsystemd/sd-bus/kdbus.h b/src/libsystemd/sd-bus/kdbus.h index e9f7d44bc..1ea4329ea 100644 --- a/src/libsystemd/sd-bus/kdbus.h +++ b/src/libsystemd/sd-bus/kdbus.h @@ -1,9 +1,10 @@ /* - * Copyright (C) 2013 Kay Sievers - * Copyright (C) 2013 Greg Kroah-Hartman - * Copyright (C) 2013 Linux Foundation - * Copyright (C) 2013 Lennart Poettering - * Copyright (C) 2013 Daniel Mack + * Copyright (C) 2013-2014 Kay Sievers + * Copyright (C) 2013-2014 Greg Kroah-Hartman + * Copyright (C) 2013-2014 Linux Foundation + * Copyright (C) 2013-2014 Lennart Poettering + * Copyright (C) 2013-2014 Daniel Mack + * Copyright (C) 2013-2014 David Herrmann * * 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 @@ -14,14 +15,11 @@ * -- Albert Einstein */ -#ifndef _KDBUS_H_ -#define _KDBUS_H_ +#ifndef _KDBUS_UAPI_H_ +#define _KDBUS_UAPI_H_ -#ifndef __KERNEL__ -#include -#include +#include #include -#endif #define KDBUS_IOCTL_MAGIC 0x95 #define KDBUS_SRC_ID_KERNEL (0) @@ -48,8 +46,8 @@ struct kdbus_notify_id_change { /** * 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 @@ -61,8 +59,8 @@ struct kdbus_notify_id_change { * 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]; }; @@ -121,12 +119,12 @@ struct kdbus_timestamp { /** * 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; @@ -160,7 +158,7 @@ struct kdbus_bloom_filter { * 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 @@ -215,7 +213,6 @@ struct kdbus_policy_access { * 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 @@ -223,6 +220,7 @@ struct kdbus_policy_access { * @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 @@ -255,7 +253,6 @@ enum kdbus_item_type { KDBUS_ITEM_BLOOM_MASK, KDBUS_ITEM_DST_NAME, KDBUS_ITEM_MAKE_NAME, - KDBUS_ITEM_MEMFD_NAME, KDBUS_ITEM_ATTACH_FLAGS, _KDBUS_ITEM_ATTACH_BASE = 0x1000, @@ -263,6 +260,7 @@ enum kdbus_item_type { KDBUS_ITEM_ID, KDBUS_ITEM_TIMESTAMP, KDBUS_ITEM_CREDS, + KDBUS_ITEM_AUXGROUPS, KDBUS_ITEM_PID_COMM, KDBUS_ITEM_TID_COMM, KDBUS_ITEM_EXE, @@ -356,9 +354,9 @@ struct kdbus_item { * 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, }; /** @@ -423,9 +421,9 @@ struct kdbus_msg { * 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, }; /** @@ -445,6 +443,31 @@ struct kdbus_cmd_recv { __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. Currently unused. + * + * This struct is used with the KDBUS_CMD_FREE ioctl. + */ +struct kdbus_cmd_free { + __u64 offset; + __u64 flags; +} __attribute__((aligned(8))); + /** * enum kdbus_policy_access_type - permissions of a policy record * @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid @@ -475,29 +498,35 @@ enum kdbus_policy_type { /** * 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_ACCEPT_MEMFD: The connection allows the reception of + * any passed memfd 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_ACCEPT_MEMFD = 1ULL << 1, + KDBUS_HELLO_ACTIVATOR = 1ULL << 2, + KDBUS_HELLO_POLICY_HOLDER = 1ULL << 3, + KDBUS_HELLO_MONITOR = 1ULL << 4, }; /** * 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 @@ -510,25 +539,26 @@ enum kdbus_hello_flags { * @_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_ALL = (1 << 11) - 1, + KDBUS_ATTACH_TIMESTAMP = 1ULL << 0, + 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, }; /** * 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. + * @features: Feature negotiation bitmask + * @conn_flags: Connection flags (KDBUS_HELLO_*). * @attach_flags: Mask of metadata to attach to each message sent * (KDBUS_ATTACH_*) * @bus_flags: The flags field copied verbatim from the original @@ -547,6 +577,7 @@ enum kdbus_attach_flags { */ struct kdbus_cmd_hello { __u64 size; + __u64 features; __u64 conn_flags; __u64 attach_flags; __u64 bus_flags; @@ -563,21 +594,23 @@ struct kdbus_cmd_hello { * @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_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 + * @features: Feature negotiation bitmask * @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_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 features; __u64 flags; struct kdbus_item items[0]; } __attribute__((aligned(8))); @@ -591,22 +624,21 @@ struct kdbus_cmd_make { * @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. + * @owner_id: The current owner of the name * @conn_flags: The flags of the owning connection (KDBUS_HELLO_*) - * @name: The well-known name + * @items: Item list, containing the well-known name as + * KDBUS_ITEM_NAME * * This structure is used with the KDBUS_CMD_NAME_ACQUIRE ioctl. */ @@ -615,7 +647,7 @@ struct kdbus_cmd_name { __u64 flags; __u64 owner_id; __u64 conn_flags; - char name[0]; + struct kdbus_item items[0]; } __attribute__((aligned(8))); /** @@ -626,10 +658,10 @@ struct kdbus_cmd_name { * @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, }; /** @@ -681,7 +713,7 @@ struct kdbus_cmd_conn_info { __u64 flags; __u64 id; __u64 offset; - char name[0]; + struct kdbus_item items[0]; } __attribute__((aligned(8))); /** @@ -710,9 +742,20 @@ struct kdbus_conn_info { */ struct kdbus_cmd_update { __u64 size; + __u64 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 @@ -726,24 +769,7 @@ struct kdbus_cmd_update { struct kdbus_cmd_match { __u64 size; __u64 cookie; - 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; + __u64 flags; struct kdbus_item items[0]; } __attribute__((aligned(8))); @@ -756,18 +782,18 @@ struct kdbus_cmd_memfd_make { * 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_HELLO: By opening the bus device 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_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 @@ -792,44 +818,18 @@ struct kdbus_cmd_memfd_make { * @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_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_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_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, + KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x20, struct kdbus_cmd_make), KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x30, @@ -840,112 +840,30 @@ enum kdbus_ioctl_type { 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), 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), + 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, + KDBUS_CMD_ENDPOINT_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), }; -/* - * 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 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. - * @ENOSYS: The requested functionality is not available. - * @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. - * @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 +#endif /* _KDBUS_UAPI_H_ */