diff options
Diffstat (limited to 'lib/util/file_cmp.c')
-rw-r--r-- | lib/util/file_cmp.c | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/lib/util/file_cmp.c b/lib/util/file_cmp.c deleted file mode 100644 index 2aa0cc2..0000000 --- a/lib/util/file_cmp.c +++ /dev/null @@ -1,41 +0,0 @@ -/* SPDX-License-Identifier: LGPL-3.0-or-later */ -/* - * file_cmp.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#include "config.h" - -#include "util/util.h" -#include "sqfs/io.h" - -#include <string.h> - -int check_file_range_equal(sqfs_file_t *file, void *scratch, size_t scratch_sz, - sqfs_u64 loc_a, sqfs_u64 loc_b, sqfs_u64 size) -{ - sqfs_u8 *ptr_a = scratch, *ptr_b = ptr_a + scratch_sz / 2; - int ret; - - while (size > 0) { - size_t diff = scratch_sz / 2; - diff = (sqfs_u64)diff > size ? size : diff; - - ret = file->read_at(file, loc_a, ptr_a, diff); - if (ret != 0) - return ret; - - ret = file->read_at(file, loc_b, ptr_b, diff); - if (ret != 0) - return ret; - - if (memcmp(ptr_a, ptr_b, diff) != 0) - return 1; - - size -= diff; - loc_a += diff; - loc_b += diff; - } - - return 0; -} |