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libmount/src/iter.c
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Karel Zak
libmount: cleanup licenses sections in the files
16 авг 2018, 16:43
16 авг 2018, 16:43
2c37ca7
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/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * This file is part of libmount from util-linux project. * * Copyright (C) 2009-2018 Karel Zak <kzak@redhat.com> * * libmount is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. */ /** * SECTION: iter * @title: Iterator * @short_description: unified iterator * * The iterator keeps the direction and the last position * for access to the internal library tables/lists. */ #include <stdio.h> #include <string.h> #include <stdlib.h> #include "mountP.h" /** * mnt_new_iter: * @direction: MNT_INTER_{FOR,BACK}WARD direction * * Returns: newly allocated generic libmount iterator. */ struct libmnt_iter *mnt_new_iter(int direction) { struct libmnt_iter *itr = calloc(1, sizeof(*itr)); if (!itr) return NULL; itr->direction = direction; return itr; } /** * mnt_free_iter: * @itr: iterator pointer * * Deallocates the iterator. */ void mnt_free_iter(struct libmnt_iter *itr) { free(itr); } /** * mnt_reset_iter: * @itr: iterator pointer * @direction: MNT_INTER_{FOR,BACK}WARD or -1 to keep the direction unchanged * * Resets the iterator. */ void mnt_reset_iter(struct libmnt_iter *itr, int direction) { if (direction == -1) direction = itr->direction; memset(itr, 0, sizeof(*itr)); itr->direction = direction; } /** * mnt_iter_get_direction: * @itr: iterator pointer * * Returns: MNT_INTER_{FOR,BACK}WARD */ int mnt_iter_get_direction(struct libmnt_iter *itr) { return itr->direction; }