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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /man/vtable-example.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/vtable-example.c')
-rw-r--r--man/vtable-example.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/man/vtable-example.c b/man/vtable-example.c
new file mode 100644
index 0000000..e3346a8
--- /dev/null
+++ b/man/vtable-example.c
@@ -0,0 +1,112 @@
+/* SPDX-License-Identifier: MIT-0 */
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <systemd/sd-bus.h>
+
+#define _cleanup_(f) __attribute__((cleanup(f)))
+
+#define check(x) ({ \
+ int r = (x); \
+ errno = r < 0 ? -r : 0; \
+ printf(#x ": %m\n"); \
+ if (r < 0) \
+ return EXIT_FAILURE; \
+ })
+
+typedef struct object {
+ char *name;
+ uint32_t number;
+} object;
+
+static int method(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ printf("Got called with userdata=%p\n", userdata);
+
+ if (sd_bus_message_is_method_call(m,
+ "org.freedesktop.systemd.VtableExample",
+ "Method4"))
+ return 1;
+
+ const char *string;
+ check(sd_bus_message_read(m, "s", &string));
+ check(sd_bus_reply_method_return(m, "s", string));
+
+ return 1;
+}
+
+static const sd_bus_vtable vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_METHOD(
+ "Method1", "s", "s", method, 0),
+ SD_BUS_METHOD_WITH_NAMES_OFFSET(
+ "Method2",
+ "so", SD_BUS_PARAM(string) SD_BUS_PARAM(path),
+ "s", SD_BUS_PARAM(returnstring),
+ method, offsetof(object, number),
+ SD_BUS_VTABLE_DEPRECATED),
+ SD_BUS_METHOD_WITH_ARGS_OFFSET(
+ "Method3",
+ SD_BUS_ARGS("s", string, "o", path),
+ SD_BUS_RESULT("s", returnstring),
+ method, offsetof(object, number),
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS(
+ "Method4",
+ SD_BUS_NO_ARGS,
+ SD_BUS_NO_RESULT,
+ method,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_SIGNAL(
+ "Signal1",
+ "so",
+ 0),
+ SD_BUS_SIGNAL_WITH_NAMES(
+ "Signal2",
+ "so", SD_BUS_PARAM(string) SD_BUS_PARAM(path),
+ 0),
+ SD_BUS_SIGNAL_WITH_ARGS(
+ "Signal3",
+ SD_BUS_ARGS("s", string, "o", path),
+ 0),
+ SD_BUS_WRITABLE_PROPERTY(
+ "AutomaticStringProperty", "s", NULL, NULL,
+ offsetof(object, name),
+ SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_WRITABLE_PROPERTY(
+ "AutomaticIntegerProperty", "u", NULL, NULL,
+ offsetof(object, number),
+ SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
+ SD_BUS_VTABLE_END
+};
+
+int main(int argc, char **argv) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+
+ sd_bus_default(&bus);
+
+ object object = { .number = 666 };
+ check((object.name = strdup("name")) != NULL);
+
+ check(sd_bus_add_object_vtable(bus, NULL,
+ "/org/freedesktop/systemd/VtableExample",
+ "org.freedesktop.systemd.VtableExample",
+ vtable,
+ &object));
+
+ check(sd_bus_request_name(bus,
+ "org.freedesktop.systemd.VtableExample",
+ 0));
+
+ for (;;) {
+ check(sd_bus_wait(bus, UINT64_MAX));
+ check(sd_bus_process(bus, NULL));
+ }
+
+ check(sd_bus_release_name(bus, "org.freedesktop.systemd.VtableExample"));
+ free(object.name);
+
+ return 0;
+}