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fs: fs_seek and fs_tell return -ENOTSUP when not implemented

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Simple change that makes fs_seek and fs_tell return -ENOTSUP when
file system does not implement the seek/tell.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
This commit is contained in:
Dominik Ermel 2020-10-01 14:19:18 +00:00 • committed by Carles Cufí
commit d795f2dbfe
2 changed files with 9 additions and 4 deletions
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8
include/fs/fs.h
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2016 Intel Corporation.
* Copyright (c) 2020 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -320,7 +321,8 @@ ssize_t fs_write(struct fs_file_t *zfp, const void *ptr, size_t size);
* - FS_SEEK_END = from end of file.
*
* @retval 0 Success
* @retval -ERRNO errno code if error.
* @retval -ENOTSUP if underlying file system does not support seeking
* @retval < 0 negative errno code
*/
int fs_seek(struct fs_file_t *zfp, off_t offset, int whence);
@ -331,7 +333,9 @@ int fs_seek(struct fs_file_t *zfp, off_t offset, int whence);
*
* @param zfp Pointer to the file object
*
* @retval position Current position in file
* @retval >= 0 position Current position in file
* @retval -ENOTSUP if underlying file system does not support seeking
* @retval < 0 negative errno code
* Current revision does not validate the file object.
*/
off_t fs_tell(struct fs_file_t *zfp);