fs: implement fstat

fstat is useful to get information about an already opened file. Add
it to barebox.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/include/fs.h b/include/fs.h
index 6eddb2312f..63e35ca815 100644
--- a/include/fs.h
+++ b/include/fs.h
@@ -114,6 +114,7 @@ int close(int fd);
 int flush(int fd);
 int lstat(const char *filename, struct stat *s);
 int stat(const char *filename, struct stat *s);
+int fstat(int fd, struct stat *s);
 ssize_t read(int fd, void *buf, size_t count);
 ssize_t pread(int fd, void *buf, size_t count, loff_t offset);
 int ioctl(int fd, int request, void *buf);