Merge functionality of file on disk and file in sqfs compare functions

Moving towards unified sqfs vs sqfs, sqfs vs dir, dir vs sqfs
comparisions.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 78 deletions

diff --git a/difftool/compare_file.c b/difftool/compare_file.c
deleted file mode 100644
index c427f38..0000000
--- a/difftool/compare_file.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * compare_file.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "difftool.h"
-
-int compare_files(file_info_t *a, file_info_t *b, const char *path)
-{
-	uint64_t offset, size, diff;
-	int ret = 0, afd, bfd;
-	void *aptr, *bptr;
-
-	if (a->size != b->size)
-		return 1;
-
-	if (pushd(first_path))
-		return -1;
-	afd = open(path, O_RDONLY);
-	if (afd < 0) {
-		fprintf(stderr, "%s/%s: %s\n", first_path, path,
-			strerror(errno));
-		return -1;
-	}
-	if (popd())
-		goto fail_afd;
-
-	if (pushd(second_path))
-		goto fail_afd;
-	bfd = open(path, O_RDONLY);
-	if (bfd < 0) {
-		fprintf(stderr, "%s/%s: %s\n", second_path, path,
-			strerror(errno));
-		goto fail_afd;
-	}
-	if (popd())
-		goto fail_bfd;
-
-	size = a->size;
-
-	for (offset = 0; offset < size; offset += diff) {
-		diff = size - offset;
-		if (diff > MAX_WINDOW_SIZE)
-			diff = MAX_WINDOW_SIZE;
-
-		aptr = mmap(NULL, diff, PROT_READ, MAP_SHARED, afd, offset);
-		if (aptr == MAP_FAILED) {
-			fprintf(stderr, "mmap %s/%s: %s\n", first_path, path,
-				strerror(errno));
-			goto fail_bfd;
-		}
-
-		bptr = mmap(NULL, diff, PROT_READ, MAP_SHARED, bfd, offset);
-		if (bptr == MAP_FAILED) {
-			fprintf(stderr, "mmap %s/%s: %s\n", second_path, path,
-				strerror(errno));
-			munmap(aptr, diff);
-			goto fail_bfd;
-		}
-
-		ret = memcmp(aptr, bptr, diff);
-		munmap(aptr, diff);
-		munmap(bptr, diff);
-
-		if (ret != 0)
-			break;
-	}
-
-	close(afd);
-	close(bfd);
-	return ret;
-fail_bfd:
-	close(bfd);
-fail_afd:
-	close(afd);
-	return -1;
-}