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swaybar: ensure correct init order for status_line

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`$WAYLAND_SOCKET` is unset by `wl_display_connect` after it has
successfully connected to the wayland socket.

However, subprocesses spawned by swaybar (status-command) don't have
access to waybar's fds as $WAYLAND_SOCKET is O_CLOEXEC. This means any
status command which itself tries to connect to wayland will fail if
this environment variable is set.

Reorder display and status-command initialization so that this variable
is not set and add an assert so we can enforce this invariant in future.
This commit is contained in:
Luke Drummond 2020-06-11 01:29:07 +01:00 • committed by Simon Ser
parent bf8d23a836
commit c22caa54a8
2 changed files with 8 additions and 4 deletions
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9
swaybar/bar.c
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@ -413,10 +413,6 @@ bool bar_setup(struct swaybar *bar, const char *socket_path) {
if (!ipc_initialize(bar)) {
return false;
}
if (bar->config->status_command) {
bar->status = status_line_init(bar->config->status_command);
bar->status->bar = bar;
}
bar->display = wl_display_connect(NULL);
if (!bar->display) {
@ -445,6 +441,11 @@ bool bar_setup(struct swaybar *bar, const char *socket_path) {
assert(pointer->cursor_surface);
}
if (bar->config->status_command) {
bar->status = status_line_init(bar->config->status_command);
bar->status->bar = bar;
}
#if HAVE_TRAY
if (!bar->config->tray_hidden) {
bar->tray = create_tray(bar);