fs: Introduce devpath_to_name()

Add a simple function to simplify the task of accepting both full path
in "/dev" and just device name as a parameter.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/fs.h b/include/fs.h
index 5c5fff8701..3d88bfad4a 100644
--- a/include/fs.h
+++ b/include/fs.h
@@ -10,6 +10,7 @@
 #include <driver.h>
 #include <filetype.h>
 #include <linux/fs.h>
+#include <linux/string.h>
 
 #define PATH_MAX       1024        /* include/linux/limits.h */
 
@@ -171,4 +172,12 @@ void mount_all(void);
 void fsdev_set_linux_rootarg(struct fs_device_d *fsdev, const char *str);
 char *path_get_linux_rootarg(const char *path);
 
+static inline const char *devpath_to_name(const char *devpath)
+{
+	if (devpath && !strncmp(devpath, "/dev/", 5))
+		return devpath + 5;
+
+	return devpath;
+}
+
 #endif /* __FS_H */