[PATCH 10/11] command: Let builtin command take precedence

[Sascha Hauer]

In theory we can overwrite a builtin command with a script. However,
I don't know a single case where this has been done. Scripts are
often more unflexible than commands so it's unlikely that a script
can extend the functionality of a builtin command. Moreover, the
internal command is no longer accessible once it's overwritten by
a script.

Invert this logic so that a builtin command can overwrite an existing
script. This will help when the 'boot' script is converted to a
builting command. Then with old environments the builtin command will
be used instead of the script.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 common/binfmt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/binfmt.c b/common/binfmt.c
index 7dcf5d7..f2ff624 100644
--- a/common/binfmt.c
+++ b/common/binfmt.c
@@ -60,6 +60,9 @@ int execute_binfmt(int argc, char **argv)
 	if (strchr(argv[0], '/'))
 		return binfmt_run(argv[0], argc, argv);
 
+	if (find_cmd(argv[0]))
+		return execute_command(argc, &argv[0]);
+
 	path = find_execable(argv[0]);
 	if (path) {
 		ret = binfmt_run(path, argc, argv);
@@ -67,7 +70,7 @@ int execute_binfmt(int argc, char **argv)
 		return ret;
 	}
 
-	return execute_command(argc, &argv[0]);
+	return -ENOENT;
 }
 
 int binfmt_register(struct binfmt_hook *b)
-- 
1.8.4.rc3