tree-wide: drop license boilerplate

[thirdparty/systemd.git] / src / shared / install-printf.c

diff --git a/src/shared/install-printf.c b/src/shared/install-printf.c
index 85aebc42cc010045bad17445afc7a9b2c715080c..c2cbf348e2fff860425cd4806dc02e8a07fb5f65 100644 (file)
--- a/src/shared/install-printf.c
+++ b/src/shared/install-printf.c
@@ -1,47 +1,74 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
   This file is part of systemd.
 
   Copyright 2013 Zbigniew Jędrzejewski-Szmek
-
-  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 <assert.h>
-#include <stdlib.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
 
+#include "format-util.h"
+#include "install-printf.h"
+#include "install.h"
+#include "macro.h"
 #include "specifier.h"
+#include "string-util.h"
 #include "unit-name.h"
-#include "install-printf.h"
+#include "user-util.h"
+
+static int specifier_prefix_and_instance(char specifier, void *data, void *userdata, char **ret) {
+        const UnitFileInstallInfo *i = userdata;
+        _cleanup_free_ char *prefix = NULL;
+        int r;
 
-static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
-        InstallInfo *i = userdata;
         assert(i);
 
-        return unit_name_to_prefix_and_instance(i->name);
+        r = unit_name_to_prefix_and_instance(i->name, &prefix);
+        if (r < 0)
+                return r;
+
+        if (endswith(prefix, "@") && i->default_instance) {
+                char *ans;
+
+                ans = strjoin(prefix, i->default_instance);
+                if (!ans)
+                        return -ENOMEM;
+                *ret = ans;
+        } else
+                *ret = TAKE_PTR(prefix);
+
+        return 0;
+}
+
+static int specifier_name(char specifier, void *data, void *userdata, char **ret) {
+        const UnitFileInstallInfo *i = userdata;
+        char *ans;
+
+        assert(i);
+
+        if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE) && i->default_instance)
+                return unit_name_replace_instance(i->name, i->default_instance, ret);
+
+        ans = strdup(i->name);
+        if (!ans)
+                return -ENOMEM;
+        *ret = ans;
+        return 0;
 }
 
-static char *specifier_prefix(char specifier, void *data, void *userdata) {
-        InstallInfo *i = userdata;
+static int specifier_prefix(char specifier, void *data, void *userdata, char **ret) {
+        const UnitFileInstallInfo *i = userdata;
+
         assert(i);
 
-        return unit_name_to_prefix(i->name);
+        return unit_name_to_prefix(i->name, ret);
 }
 
-static char *specifier_instance(char specifier, void *data, void *userdata) {
-        InstallInfo *i = userdata;
+static int specifier_instance(char specifier, void *data, void *userdata, char **ret) {
+        const UnitFileInstallInfo *i = userdata;
         char *instance;
         int r;
 
@@ -49,14 +76,19 @@ static char *specifier_instance(char specifier, void *data, void *userdata) {
 
         r = unit_name_to_instance(i->name, &instance);
         if (r < 0)
-                return NULL;
-        if (instance != NULL)
-                return instance;
-        else
-                return strdup("");
+                return r;
+
+        if (isempty(instance)) {
+                r = free_and_strdup(&instance, strempty(i->default_instance));
+                if (r < 0)
+                        return r;
+        }
+
+        *ret = instance;
+        return 0;
 }
 
-char *install_full_printf(InstallInfo *i, const char *format) {
+int install_full_printf(UnitFileInstallInfo *i, const char *format, char **ret) {
 
         /* This is similar to unit_full_printf() but does not support
          * anything path-related.
@@ -66,30 +98,33 @@ char *install_full_printf(InstallInfo *i, const char *format) {
          * %p: the prefix                              (foo)
          * %i: the instance                            (bar)
 
-         * %U the UID of the configured user or running user
-         * %u the username of the configured user or running user
+         * %U the UID of the running user
+         * %u the username of running user
          * %m the machine ID of the running system
          * %H the host name of the running system
          * %b the boot ID of the running system
+         * %v `uname -r` of the running system
          */
 
         const Specifier table[] = {
-                { 'n', specifier_string,              i->name },
+                { 'n', specifier_name,                NULL },
                 { 'N', specifier_prefix_and_instance, NULL },
                 { 'p', specifier_prefix,              NULL },
                 { 'i', specifier_instance,            NULL },
 
-//                { 'U', specifier_user_name,           NULL },
-//                { 'u', specifier_user_name,           NULL },
+                { 'U', specifier_user_id,             NULL },
+                { 'u', specifier_user_name,           NULL },
 
                 { 'm', specifier_machine_id,          NULL },
                 { 'H', specifier_host_name,           NULL },
                 { 'b', specifier_boot_id,             NULL },
-                { 0, NULL, NULL }
+                { 'v', specifier_kernel_release,      NULL },
+                {}
         };
 
         assert(i);
         assert(format);
+        assert(ret);
 
-        return specifier_printf(format, table, i);
+        return specifier_printf(format, table, i, ret);
 }