embedded: reduce stack usage

Allocate working structures on stack to avoid issues with
path lengths + reduce stack usage.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

diff --git a/src/helper/configuration.c b/src/helper/configuration.c
index 2ea5da480cb81cc26b2bc95581c5165db1d93d11..007246c58b9cc2042c2c9b464a42bbf056ccf22d 100644 (file)
--- a/src/helper/configuration.c
+++ b/src/helper/configuration.c
@@ -61,21 +61,23 @@ char *find_file(const char *file)
        char **search_dirs = script_search_dirs;
        char *dir;
        char const *mode="r";
-       char full_path[1024];
+       char *full_path;
 
        /* Check absolute and relative to current working dir first.
         * This keeps full_path reporting belowing working. */
-       snprintf(full_path, 1024, "%s", file);
+       full_path = alloc_printf("%s", file);
        fp = fopen(full_path, mode);
 
        while (!fp)
        {
+               free(full_path);
+               full_path = NULL;
                dir = *search_dirs++;
 
                if (!dir)
                        break;
 
-               snprintf(full_path, 1024, "%s/%s", dir, file);
+               full_path = alloc_printf("%s/%s", dir, file);
                fp = fopen(full_path, mode);
        }
 
@@ -83,8 +85,11 @@ char *find_file(const char *file)
        {
                fclose(fp);
                LOG_DEBUG("found %s", full_path);
-               return strdup(full_path);
+               return full_path;
        }
+
+       free(full_path);
+
        return NULL;
 }