systemd provides a feature of socket-based activation, details in [1] This commit adds an implementation to check if sockets were provided by systemd and adds this as an additional socket to wayland display. before adding sockets are checked for the correctness: only AF_UNIX of type SOCK_STREAM are accepted
This is usefull for early rendering use-cases where weston and early-rendering-application can be started parallel. [1] https://www.freedesktop.org/software/systemd/man/systemd.socket.html Signed-off-by: Eugen Friedrich <efriedr...@de.adit-jv.com> --- configure.ac | 5 ++++- src/systemd-notify.c | 27 +++++++++++++++++++++++++++ 2 files changed, 31 insertions(+), 1 deletion(-) mode change 100644 => 100755 src/systemd-notify.c diff --git a/configure.ac b/configure.ac index 9e8115a..447cf6b 100644 --- a/configure.ac +++ b/configure.ac @@ -634,7 +634,10 @@ AC_ARG_ENABLE(systemd_notify, AS_HELP_STRING([--enable-systemd-notify], [Enables systemd notifications to notify systemd about weston state - and update watchdog.]),, + and update watchdog. + Also sockets provided by systemd + in case of socket-base activation + are added to wayland display]),, enable_systemd_notify=no) AM_CONDITIONAL(SYSTEMD_NOTIFY_SUPPORT, test x$enable_systemd_notify = xyes) if test "x$enable_systemd_notify" = "xyes"; then diff --git a/src/systemd-notify.c b/src/systemd-notify.c old mode 100644 new mode 100755 index e61db0f..0be1f6f --- a/src/systemd-notify.c +++ b/src/systemd-notify.c @@ -28,6 +28,7 @@ #include <errno.h> #include <stdlib.h> #include <systemd/sd-daemon.h> +#include <sys/socket.h> #include <wayland-server.h> #include "shared/helpers.h" #include "shared/zalloc.h" @@ -79,6 +80,8 @@ module_init(struct weston_compositor *compositor, struct wl_event_loop *loop; long watchdog_time_conv; struct systemd_notifier *notifier; + int fd; + int systemd_socket_fds = 0; notifier = zalloc(sizeof *notifier); if (notifier == NULL) @@ -89,6 +92,30 @@ module_init(struct weston_compositor *compositor, wl_signal_add(&compositor->destroy_signal, ¬ifier->compositor_destroy_listener); + /*take additional display sockets if provided by systemd*/ + systemd_socket_fds = sd_listen_fds(1); + + if (systemd_socket_fds > 0) { + int current_fd = 0; + + for (;current_fd < systemd_socket_fds; current_fd++) { + fd = SD_LISTEN_FDS_START + current_fd; + + if (sd_is_socket(fd, AF_UNIX, SOCK_STREAM,1) > 0) { + if (wl_display_add_socket_fd(compositor->wl_display, fd)) { + weston_log("wl_display_add_socket_fd failed\n"); + return -1; + } + } else { + weston_log("invalid socket provided from systemd\n"); + return -1; + } + } + + weston_log("info: add %d socket(s) provided by systemd\n", + current_fd); + } + sd_notify(0, "READY=1"); /* 'WATCHDOG_USEC' is environment variable that is set -- 2.4.11 _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/wayland-devel
