file_list: add file_list_detect_all()

This is a common theme along the code that uses file_lists.
Add a function that abstracts it. This could later be used
to simplify this operation in the fastboot code.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210503114901.13095-15-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 17 insertions, 0 deletions

diff --git a/common/file-list.c b/common/file-list.c
index 55e6f0e6b6..05f44514fb 100644
--- a/common/file-list.c
+++ b/common/file-list.c
@@ -8,6 +8,7 @@
 #include <file-list.h>
 #include <stringlist.h>
 #include <linux/err.h>
+#include <driver.h>
 
 #define PARSE_DEVICE	0
 #define PARSE_NAME	1
@@ -217,3 +218,19 @@ out:
 
 	return str;
 }
+
+int file_list_detect_all(const struct file_list *files)
+{
+	struct file_list_entry *fentry;
+	struct stat s;
+	int i = 0;
+
+	list_for_each_entry(fentry, &files->list, list) {
+		if (stat(fentry->filename, &s))
+			continue;
+		if (device_detect_by_name(devpath_to_name(fentry->filename)) == 0)
+			i++;
+	}
+
+	return i;
+}