systemctl: fail in the case that no unit files were found

[elogind.git] / src / shared / install.c

diff --git a/src/shared/install.c b/src/shared/install.c
index c7cb5220281a84f913db6576446a655a600321f1..03c7a9da2eb08e91031f51085f77a4a759bf1b7b 100644 (file)
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -88,15 +88,10 @@ static int get_config_path(UnitFileScope scope, bool runtime, const char *root_d
 
         case UNIT_FILE_SYSTEM:
 
-                if (root_dir && runtime)
-                        asprintf(&p, "%s/run/systemd/system", root_dir);
-                else if (runtime)
-                        p = strdup("/run/systemd/system");
-                else if (root_dir)
-                        asprintf(&p, "%s/%s", root_dir, SYSTEM_CONFIG_UNIT_PATH);
+                if (runtime)
+                        p = path_join(root_dir, "/run/systemd/system", NULL);
                 else
-                        p = strdup(SYSTEM_CONFIG_UNIT_PATH);
-
+                        p = path_join(root_dir, SYSTEM_CONFIG_UNIT_PATH, NULL);
                 break;
 
         case UNIT_FILE_GLOBAL:
@@ -951,20 +946,19 @@ static int config_parse_also(
                 void *data,
                 void *userdata) {
 
-        char *w;
         size_t l;
-        char *state;
+        const char *word, *state;
         InstallContext *c = data;
 
         assert(filename);
         assert(lvalue);
         assert(rvalue);
 
-        FOREACH_WORD_QUOTED(w, l, rvalue, state) {
+        FOREACH_WORD_QUOTED(word, l, rvalue, state) {
                 _cleanup_free_ char *n;
                 int r;
 
-                n = strndup(w, l);
+                n = strndup(word, l);
                 if (!n)
                         return -ENOMEM;
 
@@ -972,6 +966,9 @@ static int config_parse_also(
                 if (r < 0)
                         return r;
         }
+        if (!isempty(state))
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Trailing garbage, ignoring.");
 
         return 0;
 }
@@ -1064,7 +1061,7 @@ static int unit_file_load(
         assert(path);
 
         if (!isempty(root_dir))
-                path = strappenda3(root_dir, "/", path);
+                path = strappenda(root_dir, "/", path);
 
         fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|(allow_symlink ? 0 : O_NOFOLLOW));
         if (fd < 0)
@@ -1076,7 +1073,10 @@ static int unit_file_load(
                 return -ENOMEM;
         }
 
-        r = config_parse(NULL, path, f, NULL, config_item_table_lookup, (void*) items, true, true, info);
+        r = config_parse(NULL, path, f,
+                         NULL,
+                         config_item_table_lookup, items,
+                         true, true, false, info);
         if (r < 0)
                 return r;
 
@@ -1128,7 +1128,7 @@ static int unit_file_search(
                  * enablement was requested.  We will check if it is
                  * possible to load template unit file. */
 
-                _cleanup_free_ char *template = NULL, *template_dir = NULL;
+                _cleanup_free_ char *template = NULL;
 
                 template = unit_name_template(info->name);
                 if (!template)
@@ -1658,11 +1658,7 @@ int unit_file_get_default(
                 _cleanup_free_ char *path = NULL, *tmp = NULL;
                 char *n;
 
-                if (isempty(root_dir))
-                        path = strappend(*p, "/" SPECIAL_DEFAULT_TARGET);
-                else
-                        path = strjoin(root_dir, "/", *p, "/" SPECIAL_DEFAULT_TARGET, NULL);
-
+                path = path_join(root_dir, *p, SPECIAL_DEFAULT_TARGET);
                 if (!path)
                         return -ENOMEM;
 
@@ -1719,15 +1715,12 @@ UnitFileState unit_file_get_state(
                 free(path);
                 path = NULL;
 
-                if (root_dir)
-                        asprintf(&path, "%s/%s/%s", root_dir, *i, name);
-                else
-                        asprintf(&path, "%s/%s", *i, name);
+                path = path_join(root_dir, *i, name);
                 if (!path)
                         return -ENOMEM;
 
                 if (root_dir)
-                        partial = path + strlen(root_dir) + 1;
+                        partial = path + strlen(root_dir);
                 else
                         partial = path;
 
@@ -1776,7 +1769,7 @@ UnitFileState unit_file_get_state(
 
 int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) {
         _cleanup_strv_free_ char **files = NULL;
-        char **i;
+        char **p;
         int r;
 
         assert(scope >= 0);
@@ -1804,17 +1797,10 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char
         if (r < 0)
                 return r;
 
-        STRV_FOREACH(i, files) {
-                _cleanup_free_ char *buf = NULL;
+        STRV_FOREACH(p, files) {
                 _cleanup_fclose_ FILE *f;
-                const char *p;
-
-                if (root_dir)
-                        p = buf = strjoin(root_dir, "/", *i, NULL);
-                else
-                        p = *i;
 
-                f = fopen(p, "re");
+                f = fopen(*p, "re");
                 if (!f) {
                         if (errno == ENOENT)
                                 continue;
@@ -1881,7 +1867,7 @@ int unit_file_preset(
 
         assert(scope >= 0);
         assert(scope < _UNIT_FILE_SCOPE_MAX);
-        assert(mode < _UNIT_FILE_PRESET_MODE_MAX);
+        assert(mode < _UNIT_FILE_PRESET_MAX);
 
         r = lookup_paths_init_from_scope(&paths, scope, root_dir);
         if (r < 0)
@@ -1949,7 +1935,7 @@ int unit_file_preset_all(
 
         assert(scope >= 0);
         assert(scope < _UNIT_FILE_SCOPE_MAX);
-        assert(mode < _UNIT_FILE_PRESET_MODE_MAX);
+        assert(mode < _UNIT_FILE_PRESET_MAX);
 
         r = lookup_paths_init_from_scope(&paths, scope, root_dir);
         if (r < 0)
@@ -1961,17 +1947,11 @@ int unit_file_preset_all(
 
         STRV_FOREACH(i, paths.unit_path) {
                 _cleanup_closedir_ DIR *d = NULL;
-                _cleanup_free_ char *buf = NULL;
-                const char *units_dir;
+                _cleanup_free_ char *units_dir;
 
-                if (!isempty(root_dir)) {
-                        buf = strjoin(root_dir, "/", *i, NULL);
-                        if (!buf)
-                                return -ENOMEM;
-
-                        units_dir = buf;
-                } else
-                        units_dir = *i;
+                units_dir = path_join(root_dir, *i, NULL);
+                if (!units_dir)
+                        return -ENOMEM;
 
                 d = opendir(units_dir);
                 if (!d) {
@@ -2064,23 +2044,23 @@ int unit_file_get_list(
         if (root_dir && scope != UNIT_FILE_SYSTEM)
                 return -EINVAL;
 
+        if (root_dir) {
+                r = access(root_dir, F_OK);
+                if (r < 0)
+                        return -errno;
+        }
+
         r = lookup_paths_init_from_scope(&paths, scope, root_dir);
         if (r < 0)
                 return r;
 
         STRV_FOREACH(i, paths.unit_path) {
                 _cleanup_closedir_ DIR *d = NULL;
-                _cleanup_free_ char *buf = NULL;
-                const char *units_dir;
-
-                if (!isempty(root_dir)) {
-                        buf = strjoin(root_dir, "/", *i, NULL);
-                        if (!buf)
-                                return -ENOMEM;
+                _cleanup_free_ char *units_dir;
 
-                        units_dir = buf;
-                } else
-                        units_dir = *i;
+                units_dir = path_join(root_dir, *i, NULL);
+                if (!units_dir)
+                        return -ENOMEM;
 
                 d = opendir(units_dir);
                 if (!d) {
@@ -2186,7 +2166,7 @@ static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX]
 
 DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType);
 
-static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MODE_MAX] = {
+static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MAX] = {
         [UNIT_FILE_PRESET_FULL] = "full",
         [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only",
         [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only",