Previously, assembly of the theme paths for custom paths (based on
`XDG_DATA_DIRS`) was performed using `g_strconcat`, which produced erroneous
file paths with missing path separators due to a typo in the code.
Instead, make use of `g_build_filename` to assemble the theme paths from
`XDG_DATA_DIRS` to look for custom themes, which automatically introduces
host-specific path separators between individual path components. This
introduces another temporary variable to ensure that the filename (which is
itself assembled from a name and the file ending) isn't mangled by introduction
of a path separator between these two "parts".
The current logic was fragile and failed e.g. when the
FEEDBACKD_UDEV_VAL_LED would not match leaking the dev since the
g_object_unref() at the end of the loop was never hit.
Prevent that with automatic cleanup and explicitly ref'ing the
devs we want to use.
When the client goes away we build up a list of events to end feedback
for to make sure the hash table isn't modified in place. tThe alternative
approach would be to disconnect the on_event_feedbacks_ended handler,
duplicate the DBus signal emission and use g_hash_table_foreach_remove
but that looks less robust than using the same code path.
Closes: #25
If the trigger is the last thing in sysfs_path/LED_TRIGGER_ATTR, then
the new-line at the end of the output causes g_strv_contains to fail to
find the trigger in the list. This strips the new-line before splitting
the output into a list for searching.
You can see the problem this patch fixes with the librem 5, by:
$ rmmod ledtrig-timer # or whatever is listed at the end, so 'pattern' is the last thing
$ cat /sys/devices/platform/pwmleds/leds/blue:status/trigger
[none] kbd-scrolllock ... pattern
$ fbd-ledctrl -p /sys/devices/platform/pwmleds/leds/blue:status -t pattern
Failed to set perms of /sys/devices/platform/pwmleds/leds/blue:status/pattern to 101: No such file or directory
$ modprobe ledtrig-timer
$ cat /sys/devices/platform/pwmleds/leds/blue:status/trigger
[none] kbd-scrolllock ... pattern timer
$ fbd-ledctrl -p /sys/devices/platform/pwmleds/leds/blue:status -t pattern
<success>
Reads the compatible list of the device and tries to find a device-specific theme file in all directories. If no configuration is found, we fall back to a default theme file. The device-specific theme file can always be overriden by specifying the FEEDBACK_THEME environment variable
Instead of freeing each elemnt after each iteration and then the list
itself at the very end just fully free the list. g_autoslist does
not work well on oder glib so do that manually.
This is just cosmetics.
Andreas Hartmann
Evangelos Ribeiro Tzaras
Guido Günther
Sebastian Spaeth
Clayton Craft
Martin Bürgmann
Dylan Van Assche
Luca Weiss