tree ff0b542a2262a30a305ea24230730365ab8c5a17
parent ff74ba5f1491b4121e0e7c28c4f1f9250cef3a4c
author Caspar Zhang <caspar@casparzhang.com> 1330333893 +0800
committer Caspar Zhang <caspar@casparzhang.com> 1330345976 +0800

mm/lib: add write_file & read_file functions

mm tests often read and write memory-related files, so adding 2
functions: write_file and read_file to mmlib.

Usage:

  void write_file(char *filename, char *buf);
    @param: filename - full path of file to be written
    @param: buf - a buffer string to be written to file

  void read_file(char *filename, char *retbuf);
    @param: filename - full path of file to be read
    @param (as return): retbuf - stores fetched buffer string from file

Signed-off-by: Caspar Zhang <caspar@casparzhang.com>