[PATCH v2 07/13] fs: fix st_size for device files

[Sascha Hauer <s.hauer@pengutronix.de>]

In Linux device special files have zero size, but in barebox the
device files traditionally have the size of the underlying device.
Initialize struct stat::s_size with the cdev size.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 fs/fs.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/fs/fs.c b/fs/fs.c
index 45bf89653c7c2e4e9546f1d41f79a6389e0b796d..9e2c95c6352cc63400f997bb8de53af44f4741cf 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -1100,11 +1100,23 @@ EXPORT_SYMBOL(readdir);
 
 static void stat_inode(struct inode *inode, struct stat *s)
 {
+	if (inode->cdevname) {
+		struct cdev *cdev;
+
+		cdev = cdev_by_name(inode->cdevname);
+		if (cdev) {
+			s->st_size = cdev_size(cdev);
+		} else {
+			s->st_size = 0;
+		}
+	} else {
+		s->st_size = inode->i_size;
+	}
+
 	s->st_ino = inode->i_ino;
 	s->st_mode = inode->i_mode;
 	s->st_uid = inode->i_uid;
 	s->st_gid = inode->i_gid;
-	s->st_size = inode->i_size;
 }
 
 int fstat(int fd, struct stat *s)

-- 
2.47.3