install: treat non-existent directory as empty

When looking for symlinks, it doesn't make sense to error-out if
the directory is missing. The user might delete an empty directory.

This check caused test-unit-file to fail when run before installation.

2 files changed, 5 insertions, 2 deletions

diff --git a/src/shared/install.c b/src/shared/install.c
index 1a69337f5a..0d38bccd72 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -524,8 +524,11 @@ static int find_symlinks(
         assert(same_name_link);
 
         fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
-        if (fd < 0)
+        if (fd < 0) {
+                if (errno == ENOENT)
+                        return 0;
                 return -errno;
+        }
 
         /* This takes possession of fd and closes it */
         return find_symlinks_fd(name, fd, config_path, config_path, same_name_link);
diff --git a/src/test/test-unit-file.c b/src/test/test-unit-file.c
index b390c44b05..95e2b68015 100644
--- a/src/test/test-unit-file.c
+++ b/src/test/test-unit-file.c
@@ -40,7 +40,7 @@ int main(int argc, char *argv[]) {
         assert(h);
 
         r = unit_file_get_list(UNIT_FILE_SYSTEM, NULL, h);
-        log_info("%s", strerror(-r));
+        log_info("unit_file_get_list: %s", strerror(-r));
         assert(r >= 0);
 
         HASHMAP_FOREACH(p, h, i)