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-rw-r--r--src/cgroups-agent/cgroups-agent.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/cgroups-agent/cgroups-agent.c b/src/cgroups-agent/cgroups-agent.c
new file mode 100644
index 0000000..16c5a2a
--- /dev/null
+++ b/src/cgroups-agent/cgroups-agent.c
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <stdlib.h>
+
+#include "fd-util.h"
+#include "log.h"
+#include "socket-util.h"
+
+int main(int argc, char *argv[]) {
+
+ static const union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/run/systemd/cgroups-agent",
+ };
+
+ _cleanup_close_ int fd = -EBADF;
+ ssize_t n;
+ size_t l;
+ int r;
+
+ r = make_null_stdio();
+ if (r < 0) {
+ log_error_errno(r, "Failed to connect stdin/stdout/stderr with /dev/null: %m");
+ return EXIT_FAILURE;
+ }
+
+ if (argc != 2) {
+ log_error("Incorrect number of arguments.");
+ return EXIT_FAILURE;
+ }
+
+ log_setup();
+
+ fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
+ if (fd < 0) {
+ log_debug_errno(errno, "Failed to allocate socket: %m");
+ return EXIT_FAILURE;
+ }
+
+ l = strlen(argv[1]);
+
+ n = sendto(fd, argv[1], l, 0, &sa.sa, SOCKADDR_UN_LEN(sa.un));
+ if (n < 0) {
+ log_debug_errno(errno, "Failed to send cgroups agent message: %m");
+ return EXIT_FAILURE;
+ }
+
+ if ((size_t) n != l) {
+ log_debug("Datagram size mismatch");
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}