-/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
- This file is part of systemd.
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
- Copyright 2016 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 <sched.h>
+#include <errno.h>
#include "alloc-util.h"
#include "extract-word.h"
+#include "namespace-util.h"
#include "nsflags.h"
#include "string-util.h"
-const struct namespace_flag_map namespace_flag_map[] = {
- { CLONE_NEWCGROUP, "cgroup" },
- { CLONE_NEWIPC, "ipc" },
- { CLONE_NEWNET, "net" },
- /* So, the mount namespace flag is called CLONE_NEWNS for historical reasons. Let's expose it here under a more
- * explanatory name: "mnt". This is in-line with how the kernel exposes namespaces in /proc/$PID/ns. */
- { CLONE_NEWNS, "mnt" },
- { CLONE_NEWPID, "pid" },
- { CLONE_NEWUSER, "user" },
- { CLONE_NEWUTS, "uts" },
- {}
-};
-
-const char* namespace_flag_to_string(unsigned long flag) {
- unsigned i;
-
- flag &= NAMESPACE_FLAGS_ALL;
-
- for (i = 0; namespace_flag_map[i].name; i++)
- if (flag == namespace_flag_map[i].flag)
- return namespace_flag_map[i].name;
-
- return NULL; /* either unknown namespace flag, or a combination of many. This call supports neither. */
-}
-
-unsigned long namespace_flag_from_string(const char *name) {
- unsigned i;
-
- if (isempty(name))
- return 0;
-
- for (i = 0; namespace_flag_map[i].name; i++)
- if (streq(name, namespace_flag_map[i].name))
- return namespace_flag_map[i].flag;
-
- return 0;
-}
-
-int namespace_flag_from_string_many(const char *name, unsigned long *ret) {
+int namespace_flags_from_string(const char *name, unsigned long *ret) {
unsigned long flags = 0;
int r;
for (;;) {
_cleanup_free_ char *word = NULL;
- unsigned long f;
+ unsigned long f = 0;
+ unsigned i;
r = extract_first_word(&name, &word, NULL, 0);
if (r < 0)
if (r == 0)
break;
- f = namespace_flag_from_string(word);
+ for (i = 0; namespace_info[i].proc_name; i++)
+ if (streq(word, namespace_info[i].proc_name)) {
+ f = namespace_info[i].clone_flag;
+ break;
+ }
+
if (f == 0)
return -EINVAL;
return 0;
}
-int namespace_flag_to_string_many(unsigned long flags, char **ret) {
+int namespace_flags_to_string(unsigned long flags, char **ret) {
_cleanup_free_ char *s = NULL;
unsigned i;
- for (i = 0; namespace_flag_map[i].name; i++) {
- if ((flags & namespace_flag_map[i].flag) != namespace_flag_map[i].flag)
+ for (i = 0; namespace_info[i].proc_name; i++) {
+ if ((flags & namespace_info[i].clone_flag) != namespace_info[i].clone_flag)
continue;
- if (!s) {
- s = strdup(namespace_flag_map[i].name);
- if (!s)
- return -ENOMEM;
- } else {
- if (!strextend(&s, " ", namespace_flag_map[i].name, NULL))
- return -ENOMEM;
- }
- }
-
- if (!s) {
- s = strdup("");
- if (!s)
+ if (!strextend_with_separator(&s, " ", namespace_info[i].proc_name))
return -ENOMEM;
}
- *ret = s;
- s = NULL;
+ *ret = TAKE_PTR(s);
return 0;
}
+
+const char *namespace_single_flag_to_string(unsigned long flag) {
+ for (unsigned i = 0; namespace_info[i].proc_name; i++)
+ if (namespace_info[i].clone_flag == flag)
+ return namespace_info[i].proc_name;
+
+ return NULL;
+}