run: also show a pretty string for main exit status, if any

[thirdparty/systemd.git] / src / shared / nsflags.c

diff --git a/src/shared/nsflags.c b/src/shared/nsflags.c
index a8ddc9a57f4fe6db3c2b09c2067e35bc6fdc7b6d..d4cee069dd651a79382f0046c16897b7091f5f2b 100644 (file)
--- a/src/shared/nsflags.c
+++ b/src/shared/nsflags.c
@@ -1,69 +1,14 @@
-/* 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;
 
@@ -71,7 +16,8 @@ int namespace_flag_from_string_many(const char *name, unsigned long *ret) {
 
         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)
@@ -79,7 +25,12 @@ int namespace_flag_from_string_many(const char *name, unsigned long *ret) {
                 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;
 
@@ -90,27 +41,15 @@ int namespace_flag_from_string_many(const char *name, unsigned long *ret) {
         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;
         }
 
@@ -118,3 +57,11 @@ int namespace_flag_to_string_many(unsigned long flags, char **ret) {
 
         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;
+}