mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
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dbus: Drop unused linux/kdbus.h src/kdbus.c
Drop the functions that duplicated ell functionality and the now unneeded kdbus.h copy.
This commit is contained in:
Andrew Zaborowski
Denis Kenzior
parent
79839dbfd6
commit
a64030069e
@ -52,8 +52,7 @@ ell_libell_internal_la_SOURCES = $(ell_sources)
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bin_PROGRAMS = src/iwd client/iwctl monitor/iwmon
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src_iwd_SOURCES = src/main.c linux/nl80211.h linux/kdbus.h \
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src/kdbus.h src/kdbus.c \
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src_iwd_SOURCES = src/main.c linux/nl80211.h \
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src/netdev.h src/netdev.c \
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src/wiphy.h src/wiphy.c \
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src/ie.h src/ie.c \
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@ -74,8 +73,7 @@ src_iwd_SOURCES = src/main.c linux/nl80211.h linux/kdbus.h \
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src/iwd.h
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src_iwd_LDADD = ell/libell-internal.la
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client_iwctl_SOURCES = client/main.c linux/kdbus.h \
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src/kdbus.h src/kdbus.c
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client_iwctl_SOURCES = client/main.c src/kdbus.h src/kdbus.c
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client_iwctl_LDADD = ell/libell-internal.la
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monitor_iwmon_SOURCES = monitor/main.c linux/nl80211.h \
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951
linux/kdbus.h
951
linux/kdbus.h
@ -1,951 +0,0 @@
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/*
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* Copyright (C) 2013 Kay Sievers
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* Copyright (C) 2013 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* Copyright (C) 2013 Linux Foundation
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* Copyright (C) 2013 Lennart Poettering
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* Copyright (C) 2013 Daniel Mack <daniel@zonque.org>
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*
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* kdbus is free software; you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation; either version 2.1 of the License, or (at
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* your option) any later version.
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*
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* "Everything should be made as simple as possible, but not simpler."
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* -- Albert Einstein
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*/
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#ifndef _KDBUS_H_
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#define _KDBUS_H_
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#ifndef __KERNEL__
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <linux/types.h>
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#endif
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#define KDBUS_IOCTL_MAGIC 0x95
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#define KDBUS_SRC_ID_KERNEL (0)
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#define KDBUS_DST_ID_NAME (0)
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#define KDBUS_MATCH_ID_ANY (~0ULL)
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#define KDBUS_DST_ID_BROADCAST (~0ULL)
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/**
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* struct kdbus_notify_id_change - name registry change message
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* @id: New or former owner of the name
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* @flags: flags field from KDBUS_HELLO_*
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*
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* Sent from kernel to userspace when the owner or activator of
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* a well-known name changes.
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*
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* Attached to:
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* KDBUS_ITEM_ID_ADD
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* KDBUS_ITEM_ID_REMOVE
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*/
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struct kdbus_notify_id_change {
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__u64 id;
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__u64 flags;
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};
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/**
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* struct kdbus_notify_name_change - name registry change message
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* @old: ID and flags of former owner of a name
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* @new: ID and flags of new owner of a name
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* @name: Well-known name
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*
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* Sent from kernel to userspace when the owner or activator of
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* a well-known name changes.
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*
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* Attached to:
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* KDBUS_ITEM_NAME_ADD
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* KDBUS_ITEM_NAME_REMOVE
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* KDBUS_ITEM_NAME_CHANGE
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*/
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struct kdbus_notify_name_change {
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struct kdbus_notify_id_change old;
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struct kdbus_notify_id_change new;
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char name[0];
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};
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/**
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* struct kdbus_creds - process credentials
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* @uid: User ID
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* @gid: Group ID
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* @pid: Process ID
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* @tid: Thread ID
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* @starttime: Starttime of the process
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*
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* The starttime of the process PID. This is useful to detect PID overruns
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* from the client side. i.e. if you use the PID to look something up in
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* /proc/$PID/ you can afterwards check the starttime field of it, to ensure
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* you didn't run into a PID overrun.
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*
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* Attached to:
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* KDBUS_ITEM_CREDS
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*/
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struct kdbus_creds {
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__u64 uid;
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__u64 gid;
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__u64 pid;
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__u64 tid;
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__u64 starttime;
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};
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/**
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* struct kdbus_audit - audit information
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* @sessionid: The audit session ID
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* @loginuid: The audit login uid
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*
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* Attached to:
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* KDBUS_ITEM_AUDIT
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*/
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struct kdbus_audit {
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__u64 sessionid;
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__u64 loginuid;
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};
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/**
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* struct kdbus_timestamp
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* @seqnum: Global per-domain message sequence number
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* @monotonic_ns: Monotonic timestamp, in nanoseconds
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* @realtime_ns: Realtime timestamp, in nanoseconds
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*
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* Attached to:
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* KDBUS_ITEM_TIMESTAMP
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*/
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struct kdbus_timestamp {
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__u64 seqnum;
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__u64 monotonic_ns;
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__u64 realtime_ns;
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};
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/**
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* struct kdbus_vec - I/O vector for kdbus payload items
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* @size: The size of the vector
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* @address: Memory address for memory addresses
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* @offset: Offset in the in-message payload memory,
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* relative to the message head
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*
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* Attached to:
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* KDBUS_ITEM_PAYLOAD_VEC
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*/
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struct kdbus_vec {
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__u64 size;
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union {
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__u64 address;
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__u64 offset;
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};
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};
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/**
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* struct kdbus_bloom_parameter - bus-wide bloom parameters
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* @size: Size of the bit field in bytes (m / 8)
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* @n_hash: Number of hash functions used (k)
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*/
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struct kdbus_bloom_parameter {
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__u64 size;
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__u64 n_hash;
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};
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/**
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* struct kdbus_bloom_filter - bloom filter containing n elements
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* @generation: Generation of the element set in the filter
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* @data: Bit field, multiple of 8 bytes
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*/
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struct kdbus_bloom_filter {
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__u64 generation;
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__u64 data[0];
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};
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/**
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* struct kdbus_memfd - a kdbus memfd
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* @size: The memfd's size
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* @fd: The file descriptor number
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* @__pad: Padding to ensure proper alignement and size
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*
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* Attached to:
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* KDBUS_ITEM_PAYLOAD_MEMFD
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*/
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struct kdbus_memfd {
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__u64 size;
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int fd;
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__u32 __pad;
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};
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/**
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* struct kdbus_name - a registered well-known name with its flags
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* @flags: Flags from KDBUS_NAME_*
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* @name: Well-known name
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*
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* Attached to:
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* KDBUS_ITEM_NAME
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*/
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struct kdbus_name {
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__u64 flags;
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char name[0];
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};
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/**
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* struct kdbus_policy_access - policy access item
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* @type: One of KDBUS_POLICY_ACCESS_* types
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* @access: Access to grant
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* @id: For KDBUS_POLICY_ACCESS_USER, the uid
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* For KDBUS_POLICY_ACCESS_GROUP, the gid
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*/
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struct kdbus_policy_access {
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__u64 type; /* USER, GROUP, WORLD */
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__u64 access; /* OWN, TALK, SEE */
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__u64 id; /* uid, gid, 0 */
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};
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/**
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* enum kdbus_item_type - item types to chain data in a list
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* @_KDBUS_ITEM_NULL: Uninitialized/invalid
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* @_KDBUS_ITEM_USER_BASE: Start of user items
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* @KDBUS_ITEM_PAYLOAD_VEC: Vector to data
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* @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head
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* @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd
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* @KDBUS_ITEM_FDS: Attached file descriptors
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* @KDBUS_ITEM_BLOOM_PARAMETER: Bus-wide bloom parameters, used with
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* KDBUS_CMD_BUS_MAKE, carries a
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* struct kdbus_bloom_parameter
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* @KDBUS_ITEM_BLOOM_FILTER: Bloom filter carried with a message, used to
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* match against a bloom mask of a connection,
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* carries a struct kdbus_bloom_filter
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* @KDBUS_ITEM_BLOOM_MASK: Bloom mask used to match against a message's
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* bloom filter
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* @KDBUS_ITEM_DST_NAME: Destination's well-known name
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* @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint
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* @KDBUS_ITEM_MEMFD_NAME: The human readable name of a memfd (debugging)
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* @KDBUS_ITEM_ATTACH_FLAGS: Attach-flags, used for updating which metadata
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* a connection subscribes to
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* @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items
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* @KDBUS_ITEM_NAME: Well-know name with flags
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* @KDBUS_ITEM_ID: Connection ID
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* @KDBUS_ITEM_TIMESTAMP: Timestamp
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* @KDBUS_ITEM_CREDS: Process credential
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* @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier
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* @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier
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* @KDBUS_ITEM_EXE: The path of the executable
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* @KDBUS_ITEM_CMDLINE: The process command line
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* @KDBUS_ITEM_CGROUP: The croup membership
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* @KDBUS_ITEM_CAPS: The process capabilities
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* @KDBUS_ITEM_SECLABEL: The security label
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* @KDBUS_ITEM_AUDIT: The audit IDs
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* @KDBUS_ITEM_CONN_NAME: The connection's human-readable name (debugging)
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* @_KDBUS_ITEM_POLICY_BASE: Start of policy items
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* @KDBUS_ITEM_POLICY_ACCESS: Policy access block
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* @_KDBUS_ITEM_KERNEL_BASE: Start of kernel-generated message items
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* @KDBUS_ITEM_NAME_ADD: Notify in struct kdbus_notify_name_change
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* @KDBUS_ITEM_NAME_REMOVE: Notify in struct kdbus_notify_name_change
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* @KDBUS_ITEM_NAME_CHANGE: Notify in struct kdbus_notify_name_change
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* @KDBUS_ITEM_ID_ADD: Notify in struct kdbus_notify_id_change
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* @KDBUS_ITEM_ID_REMOVE: Notify in struct kdbus_notify_id_change
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* @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached
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* @KDBUS_ITEM_REPLY_DEAD: Destination died
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*/
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enum kdbus_item_type {
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_KDBUS_ITEM_NULL,
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_KDBUS_ITEM_USER_BASE,
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KDBUS_ITEM_PAYLOAD_VEC = _KDBUS_ITEM_USER_BASE,
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KDBUS_ITEM_PAYLOAD_OFF,
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KDBUS_ITEM_PAYLOAD_MEMFD,
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KDBUS_ITEM_FDS,
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KDBUS_ITEM_BLOOM_PARAMETER,
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KDBUS_ITEM_BLOOM_FILTER,
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KDBUS_ITEM_BLOOM_MASK,
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KDBUS_ITEM_DST_NAME,
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KDBUS_ITEM_MAKE_NAME,
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KDBUS_ITEM_MEMFD_NAME,
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KDBUS_ITEM_ATTACH_FLAGS,
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_KDBUS_ITEM_ATTACH_BASE = 0x1000,
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KDBUS_ITEM_NAME = _KDBUS_ITEM_ATTACH_BASE,
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KDBUS_ITEM_ID,
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KDBUS_ITEM_TIMESTAMP,
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KDBUS_ITEM_CREDS,
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KDBUS_ITEM_PID_COMM,
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KDBUS_ITEM_TID_COMM,
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KDBUS_ITEM_EXE,
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KDBUS_ITEM_CMDLINE,
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KDBUS_ITEM_CGROUP,
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KDBUS_ITEM_CAPS,
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KDBUS_ITEM_SECLABEL,
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KDBUS_ITEM_AUDIT,
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KDBUS_ITEM_CONN_NAME,
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_KDBUS_ITEM_POLICY_BASE = 0x2000,
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KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE,
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_KDBUS_ITEM_KERNEL_BASE = 0x8000,
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KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
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KDBUS_ITEM_NAME_REMOVE,
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KDBUS_ITEM_NAME_CHANGE,
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KDBUS_ITEM_ID_ADD,
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KDBUS_ITEM_ID_REMOVE,
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KDBUS_ITEM_REPLY_TIMEOUT,
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KDBUS_ITEM_REPLY_DEAD,
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};
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/**
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* struct kdbus_item - chain of data blocks
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* @size: Overall data record size
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* @type: Kdbus_item type of data
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* @data: Generic bytes
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* @data32: Generic 32 bit array
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* @data64: Generic 64 bit array
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* @str: Generic string
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* @id: Connection ID
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* @vec: KDBUS_ITEM_PAYLOAD_VEC
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* @creds: KDBUS_ITEM_CREDS
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* @audit: KDBUS_ITEM_AUDIT
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* @timestamp: KDBUS_ITEM_TIMESTAMP
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* @name: KDBUS_ITEM_NAME
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* @bloom_parameter: KDBUS_ITEM_BLOOM_PARAMETER
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* @bloom_filter: KDBUS_ITEM_BLOOM_FILTER
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* @memfd: KDBUS_ITEM_PAYLOAD_MEMFD
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* @name_change: KDBUS_ITEM_NAME_ADD
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* KDBUS_ITEM_NAME_REMOVE
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* KDBUS_ITEM_NAME_CHANGE
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* @id_change: KDBUS_ITEM_ID_ADD
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* KDBUS_ITEM_ID_REMOVE
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* @policy: KDBUS_ITEM_POLICY_ACCESS
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*/
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struct kdbus_item {
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__u64 size;
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__u64 type;
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union {
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__u8 data[0];
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__u32 data32[0];
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__u64 data64[0];
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char str[0];
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__u64 id;
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struct kdbus_vec vec;
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struct kdbus_creds creds;
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struct kdbus_audit audit;
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struct kdbus_timestamp timestamp;
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struct kdbus_name name;
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struct kdbus_bloom_parameter bloom_parameter;
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struct kdbus_bloom_filter bloom_filter;
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struct kdbus_memfd memfd;
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int fds[0];
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struct kdbus_notify_name_change name_change;
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struct kdbus_notify_id_change id_change;
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struct kdbus_policy_access policy_access;
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};
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};
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/**
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* enum kdbus_msg_flags - type of message
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* @KDBUS_MSG_FLAGS_EXPECT_REPLY: Expect a reply message, used for
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* method calls. The userspace-supplied
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* cookie identifies the message and the
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* respective reply carries the cookie
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* in cookie_reply
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* @KDBUS_MSG_FLAGS_SYNC_REPLY: Wait for destination connection to
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* reply to this message. The
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* KDBUS_CMD_MSG_SEND ioctl() will block
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* until the reply is received, and
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* offset_reply in struct kdbus_msg will
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* yield the offset in the sender's pool
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* where the reply can be found.
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* This flag is only valid if
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* @KDBUS_MSG_FLAGS_EXPECT_REPLY is set as
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* well.
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* @KDBUS_MSG_FLAGS_NO_AUTO_START: Do not start a service, if the addressed
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* name is not currently active
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*/
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enum kdbus_msg_flags {
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KDBUS_MSG_FLAGS_EXPECT_REPLY = 1 << 0,
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KDBUS_MSG_FLAGS_SYNC_REPLY = 1 << 1,
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KDBUS_MSG_FLAGS_NO_AUTO_START = 1 << 2,
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};
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/**
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* enum kdbus_payload_type - type of payload carried by message
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* @KDBUS_PAYLOAD_KERNEL: Kernel-generated simple message
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* @KDBUS_PAYLOAD_DBUS: D-Bus marshalling "DBusDBus"
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*/
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enum kdbus_payload_type {
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KDBUS_PAYLOAD_KERNEL,
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KDBUS_PAYLOAD_DBUS = 0x4442757344427573ULL,
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};
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/**
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* struct kdbus_msg - the representation of a kdbus message
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* @size: Total size of the message
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* @flags: Message flags (KDBUS_MSG_FLAGS_*)
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* @priority: Message queue priority value
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* @dst_id: 64-bit ID of the destination connection
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* @src_id: 64-bit ID of the source connection
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* @payload_type: Payload type (KDBUS_PAYLOAD_*)
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* @cookie: Userspace-supplied cookie, for the connection
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* to identify its messages
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* @timeout_ns: The time to wait for a message reply from the peer.
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* If there is no reply, a kernel-generated message
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* with an attached KDBUS_ITEM_REPLY_TIMEOUT item
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* is sent to @src_id.
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* @cookie_reply: A reply to the requesting message with the same
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* cookie. The requesting connection can match its
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* request and the reply with this value
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* @offset_reply: If KDBUS_MSG_FLAGS_EXPECT_REPLY, this field will
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* contain the offset in the sender's pool where the
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* reply is stored.
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* @items: A list of kdbus_items containing the message payload
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*/
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struct kdbus_msg {
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__u64 size;
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__u64 flags;
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__s64 priority;
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__u64 dst_id;
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__u64 src_id;
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__u64 payload_type;
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__u64 cookie;
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union {
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__u64 timeout_ns;
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__u64 cookie_reply;
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__u64 offset_reply;
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};
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struct kdbus_item items[0];
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} __attribute__((aligned(8)));
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/**
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* enum kdbus_recv_flags - flags for de-queuing messages
|
||||
* @KDBUS_RECV_PEEK: Return the next queued message without
|
||||
* actually de-queuing it, and without installing
|
||||
* any file descriptors or other resources. It is
|
||||
* usually used to determine the activating
|
||||
* connection of a bus name.
|
||||
* @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.
|
||||
*/
|
||||
enum kdbus_recv_flags {
|
||||
KDBUS_RECV_PEEK = 1 << 0,
|
||||
KDBUS_RECV_DROP = 1 << 1,
|
||||
KDBUS_RECV_USE_PRIORITY = 1 << 2,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct kdbus_cmd_recv - struct to de-queue a buffered message
|
||||
* @flags: 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.
|
||||
*
|
||||
* This struct is used with the KDBUS_CMD_MSG_RECV ioctl.
|
||||
*/
|
||||
struct kdbus_cmd_recv {
|
||||
__u64 flags;
|
||||
__s64 priority;
|
||||
__u64 offset;
|
||||
} __attribute__((aligned(8)));
|
||||
|
||||
/**
|
||||
* enum kdbus_policy_access_type - permissions of a policy record
|
||||
* @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
|
||||
* @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
|
||||
* @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
|
||||
* @KDBUS_POLICY_ACCESS_WORLD: World-accessible
|
||||
*/
|
||||
enum kdbus_policy_access_type {
|
||||
_KDBUS_POLICY_ACCESS_NULL,
|
||||
KDBUS_POLICY_ACCESS_USER,
|
||||
KDBUS_POLICY_ACCESS_GROUP,
|
||||
KDBUS_POLICY_ACCESS_WORLD,
|
||||
};
|
||||
|
||||
/**
|
||||
* enum kdbus_policy_access_flags - mode flags
|
||||
* @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_SEE = 0,
|
||||
KDBUS_POLICY_TALK,
|
||||
KDBUS_POLICY_OWN,
|
||||
};
|
||||
|
||||
/**
|
||||
* enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
|
||||
* @KDBUS_HELLO_ACCEPT_FD: The connection allows the receiving 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 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,
|
||||
};
|
||||
|
||||
/**
|
||||
* 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_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,
|
||||
};
|
||||
|
||||
/**
|
||||
* 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_*)
|
||||
* @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
|
||||
* transferred (kernel → userspace)
|
||||
* @id: The ID of this connection (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
|
||||
*
|
||||
* This struct is used with the KDBUS_CMD_HELLO ioctl.
|
||||
*/
|
||||
struct kdbus_cmd_hello {
|
||||
__u64 size;
|
||||
__u64 conn_flags;
|
||||
__u64 attach_flags;
|
||||
__u64 bus_flags;
|
||||
__u64 id;
|
||||
__u64 pool_size;
|
||||
struct kdbus_bloom_parameter bloom;
|
||||
__u8 id128[16];
|
||||
struct kdbus_item items[0];
|
||||
} __attribute__((aligned(8)));
|
||||
|
||||
/**
|
||||
* 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,
|
||||
};
|
||||
|
||||
/**
|
||||
* 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
|
||||
* @items: Items describing details
|
||||
*
|
||||
* This structure is used with the KDBUS_CMD_BUS_MAKE, KDBUS_CMD_EP_MAKE and
|
||||
* KDBUS_CMD_DOMAIN_MAKE ioctls.
|
||||
*/
|
||||
struct kdbus_cmd_make {
|
||||
__u64 size;
|
||||
__u64 flags;
|
||||
struct kdbus_item items[0];
|
||||
} __attribute__((aligned(8)));
|
||||
|
||||
/**
|
||||
* enum kdbus_name_flags - properties of a well-known name
|
||||
* @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
|
||||
* @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
|
||||
* @KDBUS_NAME_QUEUE: Name should be queued if busy
|
||||
* @KDBUS_NAME_IN_QUEUE: Name is queued
|
||||
* @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,
|
||||
};
|
||||
|
||||
/**
|
||||
* 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_*)
|
||||
* @name: The well-known name
|
||||
*
|
||||
* This structure is used with the KDBUS_CMD_NAME_ACQUIRE ioctl.
|
||||
*/
|
||||
struct kdbus_cmd_name {
|
||||
__u64 size;
|
||||
__u64 flags;
|
||||
__u64 owner_id;
|
||||
__u64 conn_flags;
|
||||
char name[0];
|
||||
} __attribute__((aligned(8)));
|
||||
|
||||
/**
|
||||
* enum kdbus_name_list_flags - what to include into the returned list
|
||||
* @KDBUS_NAME_LIST_UNIQUE: All active connections
|
||||
* @KDBUS_NAME_LIST_NAMES: All known well-known names
|
||||
* @KDBUS_NAME_LIST_ACTIVATORS: All activator connections
|
||||
* @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,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct kdbus_cmd_name_list - request a list of name entries
|
||||
* @flags: Flags for the query (KDBUS_NAME_LIST_*)
|
||||
* @offset: The returned offset in the caller's pool buffer.
|
||||
* The user must use KDBUS_CMD_FREE to free the
|
||||
* allocated memory.
|
||||
*
|
||||
* This structure is used with the KDBUS_CMD_NAME_LIST ioctl.
|
||||
*/
|
||||
struct kdbus_cmd_name_list {
|
||||
__u64 flags;
|
||||
__u64 offset;
|
||||
} __attribute__((aligned(8)));
|
||||
|
||||
/**
|
||||
* struct kdbus_name_list - information returned by KDBUS_CMD_NAME_LIST
|
||||
* @size: The total size of the structure
|
||||
* @names: A list of names
|
||||
*
|
||||
* Note that the user is responsible for freeing the allocated memory with
|
||||
* the KDBUS_CMD_FREE ioctl.
|
||||
*/
|
||||
struct kdbus_name_list {
|
||||
__u64 size;
|
||||
struct kdbus_cmd_name names[0];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct kdbus_cmd_conn_info - struct used for KDBUS_CMD_CONN_INFO ioctl
|
||||
* @size: The total size of the struct
|
||||
* @flags: KDBUS_ATTACH_* flags
|
||||
* @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
|
||||
* 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.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
struct kdbus_cmd_conn_info {
|
||||
__u64 size;
|
||||
__u64 flags;
|
||||
__u64 id;
|
||||
__u64 offset;
|
||||
char name[0];
|
||||
} __attribute__((aligned(8)));
|
||||
|
||||
/**
|
||||
* struct kdbus_conn_info - information returned by KDBUS_CMD_CONN_INFO
|
||||
* @size: The total size of the struct
|
||||
* @id: The connection's 64-bit ID
|
||||
* @flags: The connection's 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 {
|
||||
__u64 size;
|
||||
__u64 id;
|
||||
__u64 flags;
|
||||
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
|
||||
* @cookie: Userspace supplied cookie. When removing, the cookie
|
||||
* identifies the match to remove
|
||||
* @items: A list of items for additional information
|
||||
*
|
||||
* This structure is used with the KDBUS_CMD_ADD_MATCH and
|
||||
* KDBUS_CMD_REMOVE_MATCH ioctl.
|
||||
*/
|
||||
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;
|
||||
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
|
||||
* 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
|
||||
* 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_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
|
||||
* 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
|
||||
* 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
|
||||
* currently owns.
|
||||
* @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
|
||||
* 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 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_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,
|
||||
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),
|
||||
};
|
||||
|
||||
/*
|
||||
* 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
|
||||
203
src/kdbus.c
203
src/kdbus.c
@ -24,96 +24,11 @@
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <fcntl.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
#include <glob.h>
|
||||
#include <ell/ell.h>
|
||||
|
||||
#include "linux/kdbus.h"
|
||||
#include "src/kdbus.h"
|
||||
|
||||
#define POOL_SIZE (16 * 1024LU * 1024LU)
|
||||
|
||||
static int kdbus_control = -1;
|
||||
|
||||
static int kdbus_conn = -1;
|
||||
static uint8_t kdbus_id128[16];
|
||||
|
||||
bool kdbus_create_bus(void)
|
||||
{
|
||||
struct {
|
||||
struct kdbus_cmd_make head;
|
||||
/* bloom size item */
|
||||
uint64_t bloom_size;
|
||||
uint64_t bloom_type;
|
||||
struct kdbus_bloom_parameter bloom_param;
|
||||
/* name item */
|
||||
uint64_t name_size;
|
||||
uint64_t name_type;
|
||||
char name_param[64];
|
||||
} bus_make;
|
||||
|
||||
if (kdbus_control >= 0)
|
||||
return false;
|
||||
|
||||
l_debug("Opening /dev/kdbus/control");
|
||||
|
||||
kdbus_control = open("/dev/kdbus/control", O_RDWR | O_CLOEXEC);
|
||||
if (kdbus_control < 0) {
|
||||
l_error("Failed to open kdbus control interface: %m");
|
||||
return false;
|
||||
}
|
||||
|
||||
memset(&bus_make, 0, sizeof(bus_make));
|
||||
/* bloom size item */
|
||||
bus_make.bloom_size = 16 + sizeof(bus_make.bloom_param);
|
||||
bus_make.bloom_type = KDBUS_ITEM_BLOOM_PARAMETER;
|
||||
bus_make.bloom_param.size = 64;
|
||||
bus_make.bloom_param.n_hash = 1;
|
||||
/* name item */
|
||||
snprintf(bus_make.name_param, sizeof(bus_make.name_param),
|
||||
"%u-iwd", getuid());
|
||||
bus_make.name_size = 16 + strlen(bus_make.name_param) + 1;
|
||||
bus_make.name_type = KDBUS_ITEM_MAKE_NAME;
|
||||
/* bus make head */
|
||||
bus_make.head.size = sizeof(bus_make.head) +
|
||||
bus_make.bloom_size + bus_make.name_size;
|
||||
bus_make.head.flags = KDBUS_MAKE_ACCESS_WORLD;
|
||||
|
||||
l_debug("Creating bus %s", bus_make.name_param);
|
||||
|
||||
if (ioctl(kdbus_control, KDBUS_CMD_BUS_MAKE, &bus_make) < 0) {
|
||||
l_error("Failed to create bus: %m");
|
||||
close(kdbus_control);
|
||||
kdbus_control = -1;
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool kdbus_destroy_bus(void)
|
||||
{
|
||||
if (kdbus_control < 0)
|
||||
return false;
|
||||
|
||||
if (kdbus_conn >= 0) {
|
||||
l_debug("Closing bus endpoint");
|
||||
|
||||
close(kdbus_conn);
|
||||
kdbus_conn = -1;
|
||||
}
|
||||
|
||||
l_debug("Closing kdbus control interface");
|
||||
|
||||
close(kdbus_control);
|
||||
kdbus_control = -1;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
char *kdbus_lookup_bus(void)
|
||||
{
|
||||
glob_t gl;
|
||||
@ -135,121 +50,3 @@ char *kdbus_lookup_bus(void)
|
||||
|
||||
return path;
|
||||
}
|
||||
|
||||
static bool name_acquire(const char *name)
|
||||
{
|
||||
struct {
|
||||
struct kdbus_cmd_name head;
|
||||
char param[64];
|
||||
} cmd_name;
|
||||
|
||||
if (!name)
|
||||
return true;
|
||||
|
||||
memset(&cmd_name, 0, sizeof(cmd_name));
|
||||
/* cmd name head */
|
||||
snprintf(cmd_name.param, sizeof(cmd_name.param), "%s", name);
|
||||
cmd_name.head.size = sizeof(cmd_name.head) + strlen(cmd_name.param) + 1;
|
||||
|
||||
l_debug("Acquiring name %s", cmd_name.param);
|
||||
|
||||
if (ioctl(kdbus_conn, KDBUS_CMD_NAME_ACQUIRE, &cmd_name) < 0) {
|
||||
l_error("Failed to acquire name: %m");
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool kdbus_open_bus(const char *path, const char *name, const char *conn_name)
|
||||
{
|
||||
struct {
|
||||
struct kdbus_cmd_hello head;
|
||||
/* conn name item */
|
||||
uint64_t name_size;
|
||||
uint64_t name_type;
|
||||
char name_param[16];
|
||||
} cmd_hello;
|
||||
uint64_t id, size, n_hash;
|
||||
|
||||
if (kdbus_conn >= 0)
|
||||
return false;
|
||||
|
||||
l_debug("Opening %s", path);
|
||||
|
||||
kdbus_conn = open(path, O_RDWR | O_CLOEXEC);
|
||||
if (kdbus_conn < 0) {
|
||||
l_error("Failed to open bus endpoint: %m");
|
||||
return false;
|
||||
}
|
||||
|
||||
memset(&cmd_hello, 0, sizeof(cmd_hello));
|
||||
/* conn name item */
|
||||
snprintf(cmd_hello.name_param, sizeof(cmd_hello.name_param),
|
||||
"%s", conn_name);
|
||||
cmd_hello.name_size = 16 + strlen(cmd_hello.name_param) + 1;
|
||||
cmd_hello.name_type = KDBUS_ITEM_CONN_NAME;
|
||||
/* cmd hello head */
|
||||
cmd_hello.head.size = sizeof(cmd_hello.head) + cmd_hello.name_size;
|
||||
cmd_hello.head.conn_flags = KDBUS_HELLO_ACCEPT_FD;
|
||||
cmd_hello.head.attach_flags = KDBUS_ATTACH_TIMESTAMP |
|
||||
KDBUS_ATTACH_NAMES |
|
||||
KDBUS_ATTACH_CREDS |
|
||||
KDBUS_ATTACH_CAPS |
|
||||
KDBUS_ATTACH_CGROUP |
|
||||
KDBUS_ATTACH_CONN_NAME;
|
||||
cmd_hello.head.pool_size = POOL_SIZE;
|
||||
|
||||
l_debug("Sending hello message for %s", cmd_hello.name_param);
|
||||
|
||||
if (ioctl(kdbus_conn, KDBUS_CMD_HELLO, &cmd_hello) < 0) {
|
||||
l_error("Failed to send hello: %m");
|
||||
close(kdbus_conn);
|
||||
kdbus_conn = -1;
|
||||
return false;
|
||||
}
|
||||
|
||||
id = cmd_hello.head.id;
|
||||
|
||||
l_debug("Name: :1.%" PRIu64, id);
|
||||
|
||||
memcpy(kdbus_id128, cmd_hello.head.id128, sizeof(kdbus_id128));
|
||||
|
||||
l_debug("UUID: %02x%02x%02x%02x-%02x%02x%02x%02x-"
|
||||
"%02x%02x%02x%02x-%02x%02x%02x%02x",
|
||||
kdbus_id128[0], kdbus_id128[1],
|
||||
kdbus_id128[2], kdbus_id128[3],
|
||||
kdbus_id128[4], kdbus_id128[5],
|
||||
kdbus_id128[6], kdbus_id128[7],
|
||||
kdbus_id128[8], kdbus_id128[9],
|
||||
kdbus_id128[10], kdbus_id128[11],
|
||||
kdbus_id128[12], kdbus_id128[13],
|
||||
kdbus_id128[14], kdbus_id128[15]);
|
||||
|
||||
size = cmd_hello.head.bloom.size;
|
||||
n_hash = cmd_hello.head.bloom.n_hash;
|
||||
|
||||
l_debug("Bloom size: %" PRIu64, size);
|
||||
l_debug("Bloom hashes: %" PRIu64, n_hash);
|
||||
|
||||
if (!name_acquire(name)) {
|
||||
close(kdbus_conn);
|
||||
kdbus_conn = -1;
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
};
|
||||
|
||||
bool kdbus_close_bus(void)
|
||||
{
|
||||
if (kdbus_conn < 0)
|
||||
return false;
|
||||
|
||||
l_debug("Closing bus endpoint");
|
||||
|
||||
close(kdbus_conn);
|
||||
kdbus_conn = -1;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -20,11 +20,4 @@
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdbool.h>
|
||||
|
||||
bool kdbus_create_bus(void);
|
||||
bool kdbus_destroy_bus(void);
|
||||
|
||||
char *kdbus_lookup_bus(void);
|
||||
bool kdbus_open_bus(const char *path, const char *name, const char *conn_name);
|
||||
bool kdbus_close_bus(void);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user