Age | Commit message (Collapse) | Author |
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Now that we no longer propagate callback return values, we can safely call
into user-callbacks during sysview_context_stop(). This way, users can
rely on all objects to be removed via callbacks (except if they failed
during object creation). This avoids duplicating any object hashtables on
the users' side and reduces memory consumption.
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We cannot sanely propagate error codes if we call into user-callbacks
multiple times for multiple objects. There is no way to merge those errors
or somehow propagate them.
However, we can just act similar to sd-event and print a log-message while
discarding the values. This way, we allow error-returns, but can properly
continue working on our objects.
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Add "userdata" storage to a bunch of external objects, namely displays and
sessions. Furthermore, add some property retrieval helpers.
This is required if we want external API users to not duplicate our own
object hashtables, but retrieve context from the objects themselves.
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Instead of raising DEVICE_CHANGE only per device, we now raise it per
device-session attachment. This is what we want for all sysview users,
anyway, as sessions are meant to be independent of each other. Lets avoid
any external session iterators and just do that in sysview itself.
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So far, we only forward DRM cards via sysview APIs. However, with MST,
connectors can be hotplugged, too. Forward the connectors as first-level
devices via sysview so API users can react to changing DRM connectors.
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Whe need to react to "change" events on devices, but we want to avoid
duplicating udev-monitors everywhere. Therefore, make sysview forward
change events to the sysview controllers, which can then properly react
to it.
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When deciding what seat a device is on, we have to traverse all parents
to find one with an ID_SEAT tag, otherwise, input devices plugged on a
seated USB-hub are not automatically attached to the right seat. But any
tags on the main device still overwrite the tags of the childs, so fix our
logic to check the device itself first, before traversing the parents.
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The 3 calls to sd_bus_error_get_errno appear to expect a negative
return value.
This patch negates the returned value so it matches the other error
cases in the 3 functions where sd_bus_error_get_errno is used.
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hashmap_new() now takes *_ops instead of individual functions. Fix up any
missing invokations of it that haven't been converted already.
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Don't leak the device-names during device destruction in sysview. Somehow,
the device-name is "const char*", so make it "char*" first to avoid
warnings when calling free() on it.
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In case 'scan_evdev' and 'scan_drm' are both false, we never set 'r' to
anyhting, thus return an uninitialized error code. Fix this by always
returning 0 as we catch negative codes earlier, anyway. Thanks to Thomas
H.P. Anderson for the report.
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We're going to need multiple binaries that provide session-services via
logind device management. To avoid re-writing the seat/session/device
scan/monitor interface for each of them, this commit adds a generic helper
to libsystemd-terminal:
The sysview interface scans and tracks seats, sessions and devices on a
system. It basically mirrors the state of logind on the application side.
Now, each session-service can listen for matching sessions and
attach to them. On each session, managed device access is provided. This
way, it is pretty simple to write session-services that attach to multiple
sessions (even split across seats).
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