From c7c3a4cd53d4684e9085924ab80a784bd4a9123e Mon Sep 17 00:00:00 2001 From: Cyril Bur Date: Tue, 23 Jun 2015 13:22:11 +1000 Subject: libflash/file: Add a file access backend to for the blocklevel interface. Currently libflash reads from files by using the dodgy file_flash.c which implements a very flash hardware themed interface but subverts it to read, write and erase from a file descriptor. With the introduction of this file backend, this will no longer be needed. Reviewed-By: Alistair Popple Signed-off-by: Cyril Bur Signed-off-by: Stewart Smith --- libflash/file.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 libflash/file.h (limited to 'libflash/file.h') diff --git a/libflash/file.h b/libflash/file.h new file mode 100644 index 0000000..a9a89fe --- /dev/null +++ b/libflash/file.h @@ -0,0 +1,45 @@ +/* Copyright 2013-2015 IBM Corp. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + * implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __LIBFLASH_FILE_H +#define __LIBFLASH_FILE_H + +#include "blocklevel.h" + +/* + * Blockevel functions created leave errno set on errors, as these calls + * often boil down to standard read() and write() calls, inspecting errno + * may prove useful + */ + +int file_init(int fd, struct blocklevel_device **bl); +void file_exit(struct blocklevel_device *bl); + +/* + * file_init_path() is a convenience wrapper which will open the path and call + * file_init(). The call to open happens with O_RDWR and no additional flags + * Because file_exit() doesn't close the file descriptor, file_init_path() + * makes it available. + */ +int file_init_path(const char *path, int *fd, struct blocklevel_device **bl); + +/* + * file_exit_close is a convenience wrapper which will close the open + * file descriptor and call file_exit(). + */ +void file_exit_close(struct blocklevel_device *bl); + +#endif /* __LIBFLASH_FILE_H */ -- cgit v1.1