[DFS] Add fd checking in dfs_file_close API.
@@ -136,6 +136,9 @@ int dfs_file_close(struct dfs_fd *fd)
{
int result = 0;
+ if (fd == RT_NULL)
+ return -DFS_STATUS_ENXIO;
+
if (fd != RT_NULL && fd->fs->ops->close != RT_NULL)
result = fd->fs->ops->close(fd);
@@ -568,6 +571,7 @@ void rm(const char *filename)
}
}
FINSH_FUNCTION_EXPORT(rm, remove files or directories);
+
void cat(const char* filename)
{
rt_uint32_t length;
