file/fat: add utime function

This emulates the traditional utime function from UNIX clones to allow
for manual updates of the modification timestamp on files and directories.

This should only prove useful for non-native targets as those usually
have a libc version of utime.

Change-Id: Iea8a1d328e78b92c400d3354ee80689c7cf53af8

1 files changed, 3 insertions, 0 deletions

diff --git a/firmware/include/file.h b/firmware/include/file.h
index 040f48dfc5..f17f14f98e 100644
--- a/firmware/include/file.h
+++ b/firmware/include/file.h
@@ -85,6 +85,9 @@ int fdprintf(int fildes, const char *fmt, ...) ATTRIBUTE_PRINTF(2, 3);
 #ifndef rename
 #define rename          FS_PREFIX(rename)
 #endif
+#ifndef utime
+#define utime           FS_PREFIX(utime)
+#endif
 #ifndef filesize
 #define filesize        FS_PREFIX(filesize)
 #endif