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

2 files changed, 6 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
diff --git a/firmware/include/filesystem-native.h b/firmware/include/filesystem-native.h
index 640e179890..800e7bb23b 100644
--- a/firmware/include/filesystem-native.h
+++ b/firmware/include/filesystem-native.h
@@ -43,6 +43,8 @@
 #define __OPEN_MODE_ARG
 #define __CREAT_MODE_ARG
 
+#include <time.h>
+
 int     open(const char *name, int oflag);
 int     creat(const char *name);
 int     close(int fildes);
@@ -53,6 +55,7 @@ ssize_t read(int fildes, void *buf, size_t nbyte);
 ssize_t write(int fildes, const void *buf, size_t nbyte);
 int     remove(const char *path);
 int     rename(const char *old, const char *new);
+int     utime(const char *path, const struct utimbuf* times);
 off_t   filesize(int fildes);
 int     fsamefile(int fildes1, int fildes2);
 int     relate(const char *path1, const char *path2);