start on a more complex example

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/doc/examples/daemon-depedencies/test-daemon.c b/doc/examples/daemon-depedencies/test-daemon.c
new file mode 100644
index 0000000..86095a1
--- /dev/null
+++ b/doc/examples/daemon-depedencies/test-daemon.c
@@ -0,0 +1,34 @@
+#include <bus.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define t(stmt)  if (stmt) goto fail
+
+
+static char arg[4098];
+
+
+int main(int argc, char *argv[])
+{
+	bus_t bus;
+	if (argc != 3)
+		return fprintf(stderr, "This program should be called from ./init\n"), 2;
+retry:
+	sprintf(arg, "grep '^%s$' < \"${XDG_RUNTIME_DIR}/%s-daemons\" >/dev/null", argv[1], argv[2]);
+	if (!WEXITSTATUS(system(arg))) {
+		t(bus_open(&bus, getenv("BUS_INIT"), BUS_WRONLY));
+		sprintf(arg, "0 %s %s", argv[2], argv[1]);
+		t(bus_write(&bus, arg));
+		bus_close(&bus);
+	} else if (!strcmp(argv[2], "started")) {
+		argv[2] = "ready";
+		goto retry;
+	}
+	return 0;
+
+fail:
+	perror("test-daemon");
+	return 1;
+}
+