strv: introduce new strv_from_stdarg_alloca() macro to generate a string array from stdarg function parameters

This allows us to turn lists of strings passed in easily into string
arrays without having to allocate memory.

1 files changed, 2 insertions, 8 deletions

diff --git a/src/shared/conf-files.c b/src/shared/conf-files.c
index ed4070c662..7ba4bee43b 100644
--- a/src/shared/conf-files.c
+++ b/src/shared/conf-files.c
@@ -148,18 +148,12 @@ int conf_files_list_strv(char ***strv, const char *suffix, const char *root, con
 }
 
 int conf_files_list(char ***strv, const char *suffix, const char *root, const char *dir, ...) {
-        _cleanup_strv_free_ char **dirs = NULL;
-        va_list ap;
+        char **dirs;
 
         assert(strv);
         assert(suffix);
 
-        va_start(ap, dir);
-        dirs = strv_new_ap(dir, ap);
-        va_end(ap);
-
-        if (!dirs)
-                return -ENOMEM;
+        dirs = strv_from_stdarg_alloca(dir);
 
         return conf_files_list_strv_internal(strv, suffix, root, dirs);
 }