bus: add basic implementation of a native bus client library

1 files changed, 68 insertions, 0 deletions

diff --git a/src/libsystemd-bus/busctl.c b/src/libsystemd-bus/busctl.c
new file mode 100644
index 0000000000..88446fcc7c
--- /dev/null
+++ b/src/libsystemd-bus/busctl.c
@@ -0,0 +1,68 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "sd-bus.h"
+
+int main(int argc, char *argv[]) {
+        _cleanup_bus_unref_ sd_bus *bus = NULL;
+        _cleanup_strv_free_ char **l = NULL;
+        char **i;
+        int r;
+
+        r = bus_open_system(&bus);
+        if (r < 0) {
+                log_error("Failed to connect to bus: %s", strerror(-r));
+                goto fail;
+        }
+
+        r = sd_bus_list_names(bus, &l);
+        if (r < 0) {
+                log_error("Failed to list names: %s", strerror(-r));
+                goto fail;
+        }
+
+        STRV_FOREACH(i, l) {
+                _cleanup_free_ char *owner = NULL;
+                pid_t pid = 0;
+                uid_t uid;
+                bool uid_valid;
+
+                r = sd_bus_get_owner(bus, *i, &owner);
+                if (r == -ENXIO)
+                        continue;
+
+                r = sd_get_owner_pid(bus, *i, &pid);
+                if (r == -ENXIO)
+                        continue;
+
+                r = sd_get_owner_uid(bus, *i, &pid);
+                if (r == -ENXIO)
+                        continue;
+                uid_valid = r >= 0;
+
+                printf("%s (%s) %llu %llu\n", *i, owner, (unsigned long long) pid, (unsigned long long) uid);
+        }
+
+        r = 0;
+
+fail:
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}