Implement sd_pid_notify_with_fds

Signed-off-by: Peter Lemenkov <lemenkov@redhat.com>

Author: lemenkov

c_src/sd_notify.c

@@ -24,20 +24,33 @@ OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "erl_nif.h"
 #include <systemd/sd-daemon.h>
 
-static ERL_NIF_TERM sd_pid_notify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+static ERL_NIF_TERM sd_pid_notify_with_fds_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 {
-	int pid = 0;
+	ERL_NIF_TERM head, tail;
+	unsigned int length = 0;
+
+	pid_t pid = 0;
 	enif_get_int(env, argv[0], &pid);
 
 	int unset_environment = 0;
 	enif_get_int(env, argv[1], &unset_environment);
 
-	unsigned int length = 0;
 	enif_get_list_length(env, argv[2], &length);
-
 	char* state = (char*)enif_alloc(++length);
 	enif_get_string(env, argv[2], state, length, ERL_NIF_LATIN1);
-	int result = sd_pid_notify(pid, unset_environment, state);
+
+	enif_get_list_length(env, argv[3], &length);
+	int* fds = (int*)enif_alloc(++length * sizeof(int));
+	ERL_NIF_TERM list = argv[3];
+	int i = 0;
+	while(enif_get_list_cell(env, list, &head, &tail)) {
+		enif_get_int(env, head, &fds[i]);
+		i++;
+		list = tail;
+	}
+	int result = sd_pid_notify_with_fds(pid, unset_environment, state, fds, length);
+
+	enif_free(fds);
 	enif_free(state);
 
 	return enif_make_int(env, result);
@@ -46,7 +59,7 @@ static ERL_NIF_TERM sd_pid_notify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TE
 
 static ErlNifFunc nif_funcs[] =
 {
-	{"sd_pid_notify", 3, sd_pid_notify_nif},
+	{"sd_pid_notify_with_fds", 4, sd_pid_notify_with_fds_nif},
 
 };
 

src/sd_notify.erl

@@ -27,7 +27,7 @@
 
 -module(sd_notify).
 
--export([sd_notify/2, sd_notifyf/3, sd_pid_notify/3, sd_pid_notifyf/4]).
+-export([sd_notify/2, sd_notifyf/3, sd_pid_notify/3, sd_pid_notifyf/4, sd_pid_notify_with_fds/4]).
 
 -on_load(init/0).
 
@@ -52,17 +52,19 @@ init() ->
 	erlang:load_nif(filename:join(PrivDir, ?MODULE) ++ "_drv", 0).
 
 sd_notify(UnsetEnv, Data) ->
-	sd_pid_notify(0, UnsetEnv, Data).
+	sd_pid_notify_with_fds(0, UnsetEnv, Data, []).
 
-sd_pid_notify(_, _, _) ->
-	?nif_stub.
+sd_pid_notify(Pid, UnsetEnv, Data) ->
+	sd_pid_notify_with_fds(Pid, UnsetEnv, Data, []).
 
 sd_notifyf(UnsetEnv, Format, Data) ->
-	sd_notify(UnsetEnv, lists:flatten(io_lib:format(Format, Data))).
-
+	sd_pid_notify_with_fds(0, UnsetEnv, lists:flatten(io_lib:format(Format, Data)), []).
 
 sd_pid_notifyf(Pid, UnsetEnv, Format, Data) ->
-	sd_pid_notify(Pid, UnsetEnv, lists:flatten(io_lib:format(Format, Data))).
+	sd_pid_notify_with_fds(Pid, UnsetEnv, lists:flatten(io_lib:format(Format, Data)), []).
+
+sd_pid_notify_with_fds(_, _, _, _) ->
+	?nif_stub.
 
 %% ===================================================================
 %% EUnit tests