kdbus.h taken from git://github.com/gregkh/kdbus, commit cc5b49c0d. --- gio/kdbus.h | 436 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 436 insertions(+) create mode 100644 gio/kdbus.h
diff --git a/gio/kdbus.h b/gio/kdbus.h new file mode 100644 index 0000000..06c2c24 --- /dev/null +++ b/gio/kdbus.h @@ -0,0 +1,436 @@ +/* + * Copyright (C) 2013 Kay Sievers + * Copyright (C) 2013 Greg Kroah-Hartman <gre...@linuxfoundation.org> + * Copyright (C) 2013 Linux Foundation + * Copyright (C) 2013 Lennart Poettering + * Copyright (C) 2013 Daniel Mack <dan...@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. + */ + +#ifndef _KDBUS_H_ +#define _KDBUS_H_ + +#ifndef __KERNEL__ +#include <sys/ioctl.h> +#include <sys/types.h> +#include <linux/types.h> +#endif + +#define KDBUS_IOC_MAGIC 0x95 +#define KDBUS_SRC_ID_KERNEL (0) +#define KDBUS_DST_ID_WELL_KNOWN_NAME (0) +#define KDBUS_MATCH_SRC_ID_ANY (~0ULL) +#define KDBUS_DST_ID_BROADCAST (~0ULL) + +/* Common first elements in a structure which are used to iterate over + * a list of elements. */ +#define KDBUS_PART_HEADER \ + struct { \ + __u64 size; \ + __u64 type; \ + } + +/* Message sent from kernel to userspace, when the owner or starter of + * a well-known name changes */ +struct kdbus_manager_msg_name_change { + __u64 old_id; + __u64 new_id; + __u64 flags; /* 0 or (possibly?) KDBUS_NAME_IN_QUEUE */ + char name[0]; +}; + +struct kdbus_manager_msg_id_change { + __u64 id; + __u64 flags; /* The kernel flags field from KDBUS_HELLO */ +}; + +struct kdbus_creds { + __u64 uid; + __u64 gid; + __u64 pid; + __u64 tid; + + /* 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 + ovretun. */ + __u64 starttime; +}; + +struct kdbus_audit { + __u64 sessionid; + __u64 loginuid; +}; + +struct kdbus_timestamp { + __u64 monotonic_ns; + __u64 realtime_ns; +}; + +struct kdbus_vec { + __u64 size; + union { + __u64 address; + __u64 offset; + }; +}; + +struct kdbus_memfd { + __u64 size; + int fd; + __u32 __pad; +}; + +/* Message Item Types */ +enum { + _KDBUS_MSG_NULL, + + /* Filled in by userspace */ + KDBUS_MSG_PAYLOAD_VEC, /* .data_vec, reference to memory area */ + KDBUS_MSG_PAYLOAD_OFF, /* .data_vec, reference to memory area */ + KDBUS_MSG_PAYLOAD_MEMFD, /* file descriptor of a special data file */ + KDBUS_MSG_FDS, /* .data_fds of file descriptors */ + KDBUS_MSG_BLOOM, /* for broadcasts, carries bloom filter blob in .data */ + KDBUS_MSG_DST_NAME, /* destination's well-known name, in .str */ + KDBUS_MSG_PRIORITY, /* queue priority for message */ + + /* Filled in by kernelspace */ + KDBUS_MSG_SRC_NAMES = 0x400,/* NUL separated string list with well-known names of source */ + KDBUS_MSG_TIMESTAMP, /* .timestamp */ + KDBUS_MSG_SRC_CREDS, /* .creds */ + KDBUS_MSG_SRC_PID_COMM, /* optional, in .str */ + KDBUS_MSG_SRC_TID_COMM, /* optional, in .str */ + KDBUS_MSG_SRC_EXE, /* optional, in .str */ + KDBUS_MSG_SRC_CMDLINE, /* optional, in .str (a chain of NUL str) */ + KDBUS_MSG_SRC_CGROUP, /* optional, in .str */ + KDBUS_MSG_SRC_CAPS, /* caps data blob, in .data */ + KDBUS_MSG_SRC_SECLABEL, /* NUL terminated string, in .str */ + KDBUS_MSG_SRC_AUDIT, /* .audit */ + + /* Special messages from kernel, consisting of one and only one of these data blocks */ + KDBUS_MSG_NAME_ADD = 0x800,/* .name_change */ + KDBUS_MSG_NAME_REMOVE, /* .name_change */ + KDBUS_MSG_NAME_CHANGE, /* .name_change */ + KDBUS_MSG_ID_ADD, /* .id_change */ + KDBUS_MSG_ID_REMOVE, /* .id_change */ + KDBUS_MSG_REPLY_TIMEOUT, /* empty, but .reply_cookie in .kdbus_msg is filled in */ + KDBUS_MSG_REPLY_DEAD, /* dito */ +}; + +/** + * struct kdbus_item - chain of data blocks + * + * size: overall data record size + * type: kdbus_item type of data + */ +struct kdbus_item { + KDBUS_PART_HEADER; + union { + /* inline data */ + __u8 data[0]; + __u32 data32[0]; + __u64 data64[0]; + char str[0]; + + /* connection */ + __u64 id; + + /* data vector */ + struct kdbus_vec vec; + + /* process credentials and properties*/ + struct kdbus_creds creds; + struct kdbus_audit audit; + struct kdbus_timestamp timestamp; + + /* specific fields */ + struct kdbus_memfd memfd; + int fds[0]; + struct kdbus_manager_msg_name_change name_change; + struct kdbus_manager_msg_id_change id_change; + }; +}; + +enum { + KDBUS_MSG_FLAGS_EXPECT_REPLY = 1 << 0, + KDBUS_MSG_FLAGS_NO_AUTO_START = 1 << 1, +}; + +enum { + KDBUS_PAYLOAD_KERNEL, + KDBUS_PAYLOAD_DBUS1 = 0x4442757356657231ULL, /* 'DBusVer1' */ + KDBUS_PAYLOAD_GVARIANT = 0x4756617269616e74ULL, /* 'GVariant' */ +}; + +/** + * struct kdbus_msg + * + * set by userspace: + * dst_id: destination id + * flags: KDBUS_MSG_FLAGS_* + * items: data records + * + * set by kernel: + * src_id: who sent the message + */ +struct kdbus_msg { + __u64 size; + __u64 flags; + __u64 dst_id; /* connection, 0 == name in data, ~0 broadcast */ + __u64 src_id; /* connection, 0 == kernel */ + __u64 payload_type; /* 'DBusVer1', 'GVariant', ... */ + __u64 cookie; /* userspace-supplied cookie */ + union { + __u64 cookie_reply; /* cookie we reply to */ + __u64 timeout_ns; /* timespan to wait for reply */ + }; + struct kdbus_item items[0]; +}; + +enum { + _KDBUS_POLICY_NULL, + KDBUS_POLICY_NAME, + KDBUS_POLICY_ACCESS, +}; + +enum { + _KDBUS_POLICY_ACCESS_NULL, + KDBUS_POLICY_ACCESS_USER, + KDBUS_POLICY_ACCESS_GROUP, + KDBUS_POLICY_ACCESS_WORLD, +}; + +enum { + KDBUS_POLICY_RECV = 1 << 2, + KDBUS_POLICY_SEND = 1 << 1, + KDBUS_POLICY_OWN = 1 << 0, +}; + +struct kdbus_policy_access { + __u64 type; /* USER, GROUP, WORLD */ + __u64 bits; /* RECV, SEND, OWN */ + __u64 id; /* uid, gid, 0 */ +}; + +//FIXME: convert access to access[] +struct kdbus_policy { + KDBUS_PART_HEADER; + union { + char name[0]; + struct kdbus_policy_access access; + }; +}; + +/* A series of KDBUS_POLICY_NAME, plus one or more KDBUS_POLICY_ACCESS */ +struct kdbus_cmd_policy { + __u64 size; + struct kdbus_policy policies[0]; +}; + +/* Flags for struct kdbus_cmd_hello */ +enum { + KDBUS_HELLO_STARTER = 1 << 0, + KDBUS_HELLO_ACCEPT_FD = 1 << 1, + + /* The following have an effect on directed messages only -- + * not for broadcasts */ + KDBUS_HELLO_ATTACH_COMM = 1 << 10, + KDBUS_HELLO_ATTACH_EXE = 1 << 11, + KDBUS_HELLO_ATTACH_CMDLINE = 1 << 12, + KDBUS_HELLO_ATTACH_CGROUP = 1 << 13, + KDBUS_HELLO_ATTACH_CAPS = 1 << 14, + KDBUS_HELLO_ATTACH_SECLABEL = 1 << 15, + KDBUS_HELLO_ATTACH_AUDIT = 1 << 16, +}; + +struct kdbus_cmd_hello { + __u64 size; + + /* userspace → kernel, kernel → userspace */ + __u64 conn_flags; /* userspace specifies its + * capabilities and more, kernel + * returns its capabilites and + * more. Kernel might refuse client's + * capabilities by returning an error + * from KDBUS_HELLO */ + + /* kernel → userspace */ + __u64 bus_flags; /* this is .flags copied verbatim from + * from original KDBUS_CMD_BUS_MAKE + * ioctl. It's intended to be useful + * to do negotiation of features of + * the payload that is transfreted. */ + __u64 id; /* id assigned to this connection */ + __u64 bloom_size; /* The bloom filter size chosen by the + * bus owner */ + __u64 pool_size; /* maximum size of pool buffer */ + struct kdbus_item items[0]; +}; + +/* Flags for kdbus_cmd_{bus,ep,ns}_make */ +enum { + KDBUS_MAKE_ACCESS_GROUP = 1 << 0, + KDBUS_MAKE_ACCESS_WORLD = 1 << 1, + KDBUS_MAKE_POLICY_OPEN = 1 << 2, +}; + +/* Items to append to kdbus_cmd_{bus,ep,ns}_make */ +enum { + _KDBUS_MAKE_NULL, + KDBUS_MAKE_NAME, + KDBUS_MAKE_CRED, /* allow translator services which connect + * to the bus on behalf of somebody else, + * allow specifiying the credentials of the + * client to connect on behalf on. Needs + * privileges */ +}; + +struct kdbus_cmd_bus_make { + __u64 size; + __u64 flags; /* userspace → kernel, kernel → userspace + * When creating a bus feature + * kernel negotiation. */ + __u64 bus_flags; /* userspace → kernel + * When a bus is created this value is + * copied verbatim into the bus + * structure and returned from + * KDBUS_CMD_HELLO, later */ + __u64 bloom_size; /* size of the bloom filter for this bus */ + struct kdbus_item items[0]; +}; + +struct kdbus_cmd_ep_make { + __u64 size; + __u64 flags; /* userspace → kernel, kernel → userspace + * When creating an entry point + * feature kernel negotiation done the + * same way as for + * KDBUS_CMD_BUS_MAKE. Unused for + * now. */ + struct kdbus_item items[0]; +}; + +struct kdbus_cmd_ns_make { + __u64 size; + __u64 flags; /* userspace → kernel, kernel → userspace + * When creating an entry point + * feature kernel negotiation done the + * same way as for + * KDBUS_CMD_BUS_MAKE. Unused for + * now. */ + struct kdbus_item items[0]; +}; + +enum { + /* userspace → kernel */ + KDBUS_NAME_REPLACE_EXISTING = 1 << 0, + KDBUS_NAME_QUEUE = 1 << 1, + KDBUS_NAME_ALLOW_REPLACEMENT = 1 << 2, + + /* kernel → userspace */ + KDBUS_NAME_IN_QUEUE = 1 << 16, +}; + +/* We allow (de)regestration of names of other peers */ +struct kdbus_cmd_name { + __u64 size; + __u64 flags; + __u64 id; + __u64 conn_flags; + char name[0]; +}; + +struct kdbus_cmd_names { + __u64 size; + struct kdbus_cmd_name names[0]; +}; + +enum { + _KDBUS_NAME_INFO_ITEM_NULL, + KDBUS_NAME_INFO_ITEM_NAME, /* userspace → kernel */ + KDBUS_NAME_INFO_ITEM_SECLABEL, /* kernel → userspace */ + KDBUS_NAME_INFO_ITEM_AUDIT, /* kernel → userspace */ +}; + +struct kdbus_cmd_name_info { + __u64 size; /* overall size of info */ + __u64 flags; + __u64 id; /* either ID, or 0 and _ITEM_NAME follows */ + struct kdbus_creds creds; + struct kdbus_item items[0]; /* list of item records */ +}; + +enum { + _KDBUS_MATCH_NULL, + KDBUS_MATCH_BLOOM, /* Matches a mask blob against KDBUS_MSG_BLOOM */ + KDBUS_MATCH_SRC_NAME, /* Matches a name string against KDBUS_MSG_SRC_NAMES */ + KDBUS_MATCH_NAME_ADD, /* Matches a name string against KDBUS_MSG_NAME_ADD */ + KDBUS_MATCH_NAME_REMOVE, /* Matches a name string against KDBUS_MSG_NAME_REMOVE */ + KDBUS_MATCH_NAME_CHANGE, /* Matches a name string against KDBUS_MSG_NAME_CHANGE */ + KDBUS_MATCH_ID_ADD, /* Matches an ID against KDBUS_MSG_ID_ADD */ + KDBUS_MATCH_ID_REMOVE, /* Matches an ID against KDBUS_MSG_ID_REMOVE */ +}; + +struct kdbus_cmd_match { + __u64 size; + __u64 id; /* We allow registration/deregestration of matches for other peers */ + __u64 cookie; /* userspace supplied cookie; when removing; kernel deletes everything with same cookie */ + __u64 src_id; /* ~0: any. other: exact unique match */ + struct kdbus_item items[0]; +}; + +struct kdbus_cmd_monitor { + __u64 id; /* We allow setting the monitor flag of other peers */ + unsigned int enable; /* A boolean to enable/disable monitoring */ + __u32 __pad; +}; + +/* FD states: + * control nodes: unset + * bus owner (via KDBUS_CMD_BUS_MAKE) + * ns owner (via KDBUS_CMD_NS_MAKE) + * + * ep nodes: unset + * connected (via KDBUS_CMD_HELLO) + * starter (via KDBUS_CMD_HELLO with KDBUS_CMD_HELLO_STARTER) + * ep owner (via KDBUS_CMD_EP_MAKE) + */ +enum { + /* kdbus control node commands: require unset state */ + KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOC_MAGIC, 0x00, struct kdbus_cmd_bus_make), + KDBUS_CMD_NS_MAKE = _IOR(KDBUS_IOC_MAGIC, 0x10, struct kdbus_cmd_ns_make), + + /* kdbus ep node commands: require unset state */ + KDBUS_CMD_EP_MAKE = _IOW(KDBUS_IOC_MAGIC, 0x20, struct kdbus_cmd_ep_make), + KDBUS_CMD_HELLO = _IOWR(KDBUS_IOC_MAGIC, 0x30, struct kdbus_cmd_hello), + + /* kdbus ep node commands: require connected state */ + KDBUS_CMD_MSG_SEND = _IOW(KDBUS_IOC_MAGIC, 0x40, struct kdbus_msg), + KDBUS_CMD_MSG_RECV = _IOR(KDBUS_IOC_MAGIC, 0x41, __u64 *), + KDBUS_CMD_MSG_RELEASE = _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_names), + KDBUS_CMD_NAME_QUERY = _IOWR(KDBUS_IOC_MAGIC, 0x53, struct kdbus_cmd_name_info), + + KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOC_MAGIC, 0x60, struct kdbus_cmd_match), + KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOC_MAGIC, 0x61, struct kdbus_cmd_match), + KDBUS_CMD_MONITOR = _IOW(KDBUS_IOC_MAGIC, 0x62, struct kdbus_cmd_monitor), + + /* kdbus ep node commands: require ep owner state */ + KDBUS_CMD_EP_POLICY_SET = _IOW(KDBUS_IOC_MAGIC, 0x70, struct kdbus_cmd_policy), + + /* kdbus memfd commands: */ + KDBUS_CMD_MEMFD_NEW = _IOR(KDBUS_IOC_MAGIC, 0x80, int *), + KDBUS_CMD_MEMFD_SIZE_GET = _IOR(KDBUS_IOC_MAGIC, 0x81, __u64 *), + KDBUS_CMD_MEMFD_SIZE_SET = _IOW(KDBUS_IOC_MAGIC, 0x82, __u64 *), + KDBUS_CMD_MEMFD_SEAL_GET = _IOR(KDBUS_IOC_MAGIC, 0x83, int *), + KDBUS_CMD_MEMFD_SEAL_SET = _IO(KDBUS_IOC_MAGIC, 0x84), +}; +#endif -- 1.8.4.rc3 _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel