rm: implement -r

To recursively remove files and directories.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 57 insertions, 1 deletions

diff --git a/lib/Makefile b/lib/Makefile
index eb0af9248..635d52e65 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -36,3 +36,4 @@ obj-$(CONFIG_BITREV)	+= bitrev.o
 obj-$(CONFIG_QSORT)	+= qsort.o
 obj-y			+= gui/
 obj-$(CONFIG_XYMODEM)	+= xymodem.o
+obj-y			+= unlink-recursive.o
diff --git a/lib/recursive_action.c b/lib/recursive_action.c
index 5bc2595db..345d3db0c 100644
--- a/lib/recursive_action.c
+++ b/lib/recursive_action.c
@@ -130,7 +130,6 @@ int recursive_action(const char *fileName,
 		return 0;
 	return 1;
 done_nak_warn:
-	printf("%s", fileName);
 	return 0;
 }
 
diff --git a/lib/unlink-recursive.c b/lib/unlink-recursive.c
new file mode 100644
index 000000000..a4885538c
--- /dev/null
+++ b/lib/unlink-recursive.c
@@ -0,0 +1,56 @@
+#include <common.h>
+#include <libbb.h>
+#include <fs.h>
+
+static char unlink_recursive_failedpath[PATH_MAX];
+
+struct data {
+	int error;
+};
+
+static int file_action(const char *filename, struct stat *statbuf,
+			    void *userdata, int depth)
+{
+	struct data *data = userdata;
+	int ret;
+
+	ret = unlink(filename);
+	if (ret) {
+		strcpy(unlink_recursive_failedpath, filename);
+		data->error = ret;
+	}
+
+	return ret ? 0 : 1;
+}
+
+static int dir_action(const char *dirname, struct stat *statbuf,
+			    void *userdata, int depth)
+{
+	struct data *data = userdata;
+	int ret;
+
+	ret = rmdir(dirname);
+	if (ret) {
+		strcpy(unlink_recursive_failedpath, dirname);
+		data->error = ret;
+	}
+
+	return ret ? 0 : 1;
+}
+
+int unlink_recursive(const char *path, char **failedpath)
+{
+	struct data data = {};
+	int ret;
+
+	if (failedpath)
+		*failedpath = NULL;
+
+	ret = recursive_action(path, ACTION_RECURSE | ACTION_DEPTHFIRST,
+			file_action, dir_action, &data, 0);
+
+	if (!ret && failedpath)
+		*failedpath = unlink_recursive_failedpath;
+
+	return ret ? 0 : errno;
+}