split selinux label operations out of cgroup-util, socket-util

This prevents linking of selinux and libdl for another 15 binaries.

1 files changed, 81 insertions, 0 deletions

diff --git a/src/shared/cgroup-label.c b/src/shared/cgroup-label.c
new file mode 100644
index 0000000000..f9a42c679e
--- /dev/null
+++ b/src/shared/cgroup-label.c
@@ -0,0 +1,81 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 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
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+#include <stdlib.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <ftw.h>
+
+#include "cgroup-util.h"
+#include "log.h"
+#include "set.h"
+#include "macro.h"
+#include "util.h"
+#include "mkdir.h"
+
+int cg_create(const char *controller, const char *path) {
+        char *fs;
+        int r;
+
+        assert(controller);
+        assert(path);
+
+        if ((r = cg_get_path(controller, path, NULL, &fs)) < 0)
+                return r;
+
+        r = mkdir_parents(fs, 0755);
+
+        if (r >= 0) {
+                if (mkdir(fs, 0755) >= 0)
+                        r = 1;
+                else if (errno == EEXIST)
+                        r = 0;
+                else
+                        r = -errno;
+        }
+
+        free(fs);
+
+        return r;
+}
+
+int cg_create_and_attach(const char *controller, const char *path, pid_t pid) {
+        int r, q;
+
+        assert(controller);
+        assert(path);
+        assert(pid >= 0);
+
+        if ((r = cg_create(controller, path)) < 0)
+                return r;
+
+        if ((q = cg_attach(controller, path, pid)) < 0)
+                return q;
+
+        /* This does not remove the cgroup on failure */
+
+        return r;
+}