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Replace ENOTSUP by EOPNOTSUPP as this is what linux actually uses.
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After some reconsideration, we decided to move the binary protocol
back to 64-bit wide UIDs and GIDs. After all, it should be possible
to redefine [gu]id_t to uint64_t and things should continue to
work. As we want to avoid such data types in kdbus.h, let's move
back to 64-bit values and be safe.
In sd-bus, we have to do a translation between uint64_t and gid_t
now for supplementary gids.
Some inline comments have also been updated in kdbus upstream.
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Follow two small changes in the kdbus API:
* Flags are now returned in cmd->return_flags by KDBUS_CMD_NAME_ACQUIRE
* struct kdbus_item_list has been dropped. The information stored in
this struct was redundant since awhile already, as all commands
report their returned slice size anyway.
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This patch removes includes that are not used. The removals were found with
include-what-you-use which checks if any of the symbols from a header is
in use.
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Pull in new kdbus changes, namely:
- EOVERFLOW is replaces by KDBUS_RECV_RETURN_DROPPED_MSGS
- ENOMSG is merged with EAGAIN for consistency
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and 32bit on dbus1
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their entirety as gvariant objects""
This reverts commit 954871d8ba15911d014f76ed2c7a9492953cf39d.
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Another slice logic rework in kdbus made KDBUS_ITEM_PAYLOAD_OFF items
relative to the message header again. Catch up with that in sd-bus.
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Also, document in adjacent comments and in CODING_STYLE why we do that.
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entirety as gvariant objects"
This breaks booting with kdbus.
This reverts commit b381de4197157748ed96e469fcc372c23f842ae1.
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as gvariant objects
Previously, we only minimally altered the dbus1 framing for kdbus, and
while the header and its fields where compliant Gvariant objects, and so
was the body, the entire message together was not.
As result of discussions with Ryan Lortie this is now changed, so that
the messages in there entirely are fully compliant GVariants. This
follows the framing description described here:
https://wiki.gnome.org/Projects/GLib/GDBus/Version2
Note that this change changes the framing of *all* messages sent via
kdbus, this means you have to reboot your kdbus system, after compiling
and installing this new version.
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There is no reason to provide our own attach_flags_mask. We can simply
rely on kdbus.attach_flags_mask= which is read by the kernel *and* kmod.
If it's set, we assume the user wants to override our setting, so we
simply skip setting it.
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Just a simple variable rename, and a dropped flag that sd-bus didn't make
use of.
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Make sure to append bloom-filters to all signal-messages, not only
broadcasts.
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Catch up with latest changes in kdbus.ko:
* Signals can be sent as unicast now, hence they need to be marked as
such with the KDBUS_MSG_SIGNAL in the message flags.
* Follow ioctl number change for KDBUS_CMD_FREE
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The kernel provides capabilities as a u32 array, sd-bus uses an u8 array.
This works fine on little-endian as both are encoded the same way.
However, this fails on big-endian if we do not perform sufficient
byte-swapping on each u32 entry.
This patch makes sd-bus use u32, too. We avoid changing any kernel
provided data so we can keep pointing into kdbus pool buffers which
contain u32 arrays.
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The number of available caps can be read from
/proc/sys/kernel/cap_last_cap during runtime. Our helper cap_last_cap()
does that, so there's no reason to remember the size of any capability
cache. We can just pre-allocate arrays with a suitable size for all
available caps and reject any higher caps.
The kernel capability API uses u32 as base so make sure we do the same.
Note that this is specified by POSIX, so it's unlikely to change.
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Drop spurious 'we'.
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files from core
Stuff in src/shared or src/libsystemd should *never* include code from
src/core or any of the tools, so don't do that here either. It's not OK!
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Kernel notifications carry a timestamp now, so make sure
bus_kernel_translate_message() doesn't complain when it stumbles across
them.
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Make sure to set send-attach-flags on BUS_MAKE. These control which
information is revealed about the bus-owner.
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Make sure we don't call into any bus_kernel_*() functions before
b->is_kernel is set to true. Hard-code the CMD_FREE just like the other
helpers do.
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Changes:
* bloom parameters are returned in an offset via HELLO
* FREE now takes items just like any other ioctl
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Sync up with recent kdbus changed:
* several ioctls gained .size and .items members (but still unused)
* CMD_SEND gained its own ioctl structure
* several members of kdbus_msg were dropped as they were only used during
SEND, not during RECV etc.
* CMD_RECV and CMD_SEND now share a kdbus_reply member which contains the
offset and size of the returned message.
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kdbus is not available
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As kdbus no longer exports this, remove all traces from sd-bus too
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kdbus-git gained two new features:
* memfd offsets: This allows to specify a 'start' offset in kdbus_memfd
so you can send partial memfd hunks instead of always
the full memfd
* KDBUS_HELLO_UNPRIVILEGED: If passed during HELLO, the client will be
treated as unprivileged.
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Implement a recent change in the kdbus pool logic:
PAYLOAD_VEC_OFF items are now referencing offsets relative to the
connection's pool, not to the item itself. Follow this change in
sd-bus.
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Let's do this right from the beginning, to prepare ground for udev
messages that most likely want to store list of strings (for device
tags) in messages, and filter on them.
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connected to a system or a user bus
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Also, make the call to free kdbus slices generic and use it everywhere
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It corrrectly handles both positive and negative errno values.
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As a followup to 086891e5c1 "log: add an "error" parameter to all
low-level logging calls and intrdouce log_error_errno() as log calls
that take error numbers", use sed to convert the simple cases to use
the new macros:
find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\("(.*)%s"(.*), strerror\(-([a-zA-Z_]+)\)\);/log_\1_errno(-\4, "\2%m"\3);/'
Multi-line log_*() invocations are not covered.
And we also should add log_unit_*_errno().
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initialize it as such
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shouldn't confuse the empty list with unknown information
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kdbus
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The kdbus module will later get a policy that endpoint-names are
restricted to "<uid>-<name>" just like bus-names. Make sure that systemd
is already compatible to that.
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to us, no need to convert to uid_t manually
This way, we can save one allocation and avoid copying the array
unnecesarily.
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We changed creds to u32, so fix systemd sd-bus to acknowledge that.
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attached to incoming messages
We don't know what the activated service might want in the end, hence
enable everything current and future, just to be sure.
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