Fixes hide_playlist_targets not working after server restart
Currently, `hide_playlists_targets` works by skipping songs with
`in_playlist` value set to true in
[`Directory::Walk`](a57bcd0238/src/db/plugins/simple/Directory.cxx (L237)). But
`in_playlist` is not stored and only updated in
[`UpdateWalk::PurgeDanglingFromPlaylists`](a57bcd0238/src/db/update/Playlist.cxx (L139)),
which will only be executed while updating DB.
This causes the problem that playlist target songs are correctly
hidden after database update, but will remain visible after mpd server
restarted. This pr solves the problem by storing `in_playlist` value
of songs into the `SimpleDatabase` file.
By default, if the parent of a process dies, the process gets SIGHUP
and is supposed to shut down. This however doesn't work for MPD,
because MPD redefines SIGHUP with a different meaning (like most
daemons do).
To work around this, we configure the kernel to send SIGTERM instead
of SIGHUP.
Closes https://github.com/MusicPlayerDaemon/MPD/issues/1706
Fixes a busy loop in BufferingInputStream::RunThreadLocked() because
the method never learns that seeking is ignored, even though the HTTP
stream is already broken and can never be read; nobody cared to check
for errors.
Closes https://github.com/MusicPlayerDaemon/MPD/issues/1727
If the environment variable $HOME does not exist, don't attempt to
obtain it from /etc/passwd; without $HOME, the calling process
indicates that it does not wish MPD to access the home directory.
This also prevents MPD from attempting to load
`/root/.config/mpd/mpd.conf` if MPD got started as global systemd
service. Reading from there makes no sense, only /etc/mpd.conf shall
be used then.
This piece of code was initially added by commit 5d85792178.
Closes https://github.com/MusicPlayerDaemon/MPD/issues/1687
When drop_start_samples and drop_end_samples overlap and are greater
than the actual number of samples, the `num_samples` calculation in
SubmitPCM() could underflow.
Closes https://github.com/MusicPlayerDaemon/MPD/issues/1712
Max Kellermann