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-rw-r--r--lib/ext2fs/tst_bitops.c288
1 files changed, 288 insertions, 0 deletions
diff --git a/lib/ext2fs/tst_bitops.c b/lib/ext2fs/tst_bitops.c
new file mode 100644
index 0000000..adef12d
--- /dev/null
+++ b/lib/ext2fs/tst_bitops.c
@@ -0,0 +1,288 @@
+/*
+ * This testing program makes sure the bitops functions work
+ *
+ * Copyright (C) 2001 by Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <fcntl.h>
+#include <time.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+unsigned char bitarray[] = {
+ 0x80, 0xF0, 0x40, 0x40, 0x0, 0x0, 0x0, 0x0, 0x10, 0x20, 0x00, 0x00
+ };
+
+int bits_list[] = {
+ 7, 12, 13, 14,15, 22, 30, 68, 77, -1,
+};
+
+#define BIG_TEST_BIT (((unsigned) 1 << 31) + 42)
+
+
+int main(int argc, char **argv)
+{
+ int i, j, size;
+ unsigned char testarray[12];
+ unsigned char *bigarray;
+
+ size = sizeof(bitarray)*8;
+#if 0
+ i = ext2fs_find_first_bit_set(bitarray, size);
+ while (i < size) {
+ printf("Bit set: %d\n", i);
+ i = ext2fs_find_next_bit_set(bitarray, size, i+1);
+ }
+#endif
+
+ /* Test test_bit */
+ for (i=0,j=0; i < size; i++) {
+ if (ext2fs_test_bit(i, bitarray)) {
+ if (bits_list[j] == i) {
+ j++;
+ } else {
+ printf("Bit %d set, not expected\n", i);
+ exit(1);
+ }
+ } else {
+ if (bits_list[j] == i) {
+ printf("Expected bit %d to be clear.\n", i);
+ exit(1);
+ }
+ }
+ }
+ printf("ext2fs_test_bit appears to be correct\n");
+
+ /* Test ext2fs_set_bit */
+ memset(testarray, 0, sizeof(testarray));
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_set_bit(bits_list[i], testarray);
+ }
+ if (memcmp(testarray, bitarray, sizeof(testarray)) == 0) {
+ printf("ext2fs_set_bit test succeeded.\n");
+ } else {
+ printf("ext2fs_set_bit test failed.\n");
+ for (i=0; i < sizeof(testarray); i++) {
+ printf("%02x ", testarray[i]);
+ }
+ printf("\n");
+ exit(1);
+ }
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_clear_bit(bits_list[i], testarray);
+ }
+ for (i=0; i < sizeof(testarray); i++) {
+ if (testarray[i]) {
+ printf("ext2fs_clear_bit failed, "
+ "testarray[%d] is %d\n", i, testarray[i]);
+ exit(1);
+ }
+ }
+ printf("ext2fs_clear_bit test succeed.\n");
+
+
+ /* Do bigarray test */
+ bigarray = malloc(1 << 29);
+ if (!bigarray) {
+ fprintf(stderr, "Failed to allocate scratch memory!\n");
+ exit(0);
+ }
+
+ bigarray[BIG_TEST_BIT >> 3] = 0;
+
+ ext2fs_set_bit(BIG_TEST_BIT, bigarray);
+ printf("big bit number (%u) test: %d, expected %d\n", BIG_TEST_BIT,
+ bigarray[BIG_TEST_BIT >> 3], (1 << (BIG_TEST_BIT & 7)));
+ if (bigarray[BIG_TEST_BIT >> 3] != (1 << (BIG_TEST_BIT & 7)))
+ exit(1);
+
+ ext2fs_clear_bit(BIG_TEST_BIT, bigarray);
+
+ printf("big bit number (%u) test: %d, expected 0\n", BIG_TEST_BIT,
+ bigarray[BIG_TEST_BIT >> 3]);
+ if (bigarray[BIG_TEST_BIT >> 3] != 0)
+ exit(1);
+
+ printf("ext2fs_set_bit big_test successful\n");
+
+
+ /* Now test ext2fs_fast_set_bit */
+ memset(testarray, 0, sizeof(testarray));
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_fast_set_bit(bits_list[i], testarray);
+ }
+ if (memcmp(testarray, bitarray, sizeof(testarray)) == 0) {
+ printf("ext2fs_fast_set_bit test succeeded.\n");
+ } else {
+ printf("ext2fs_fast_set_bit test failed.\n");
+ for (i=0; i < sizeof(testarray); i++) {
+ printf("%02x ", testarray[i]);
+ }
+ printf("\n");
+ exit(1);
+ }
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_clear_bit(bits_list[i], testarray);
+ }
+ for (i=0; i < sizeof(testarray); i++) {
+ if (testarray[i]) {
+ printf("ext2fs_clear_bit failed, "
+ "testarray[%d] is %d\n", i, testarray[i]);
+ exit(1);
+ }
+ }
+ printf("ext2fs_clear_bit test succeed.\n");
+
+
+ bigarray[BIG_TEST_BIT >> 3] = 0;
+
+ ext2fs_fast_set_bit(BIG_TEST_BIT, bigarray);
+ printf("big bit number (%u) test: %d, expected %d\n", BIG_TEST_BIT,
+ bigarray[BIG_TEST_BIT >> 3], (1 << (BIG_TEST_BIT & 7)));
+ if (bigarray[BIG_TEST_BIT >> 3] != (1 << (BIG_TEST_BIT & 7)))
+ exit(1);
+
+ ext2fs_fast_clear_bit(BIG_TEST_BIT, bigarray);
+
+ printf("big bit number (%u) test: %d, expected 0\n", BIG_TEST_BIT,
+ bigarray[BIG_TEST_BIT >> 3]);
+ if (bigarray[BIG_TEST_BIT >> 3] != 0)
+ exit(1);
+
+ printf("ext2fs_fast_set_bit big_test successful\n");
+
+ /* Repeat foregoing tests for 64-bit bitops */
+
+ /* Test test_bit */
+ for (i=0,j=0; i < size; i++) {
+ if (ext2fs_test_bit64(i, bitarray)) {
+ if (bits_list[j] == i) {
+ j++;
+ } else {
+ printf("64-bit: Bit %d set, not expected\n",
+ i);
+ exit(1);
+ }
+ } else {
+ if (bits_list[j] == i) {
+ printf("64-bit: "
+ "Expected bit %d to be clear.\n", i);
+ exit(1);
+ }
+ }
+ }
+ printf("64-bit: ext2fs_test_bit appears to be correct\n");
+
+ /* Test ext2fs_set_bit */
+ memset(testarray, 0, sizeof(testarray));
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_set_bit64(bits_list[i], testarray);
+ }
+ if (memcmp(testarray, bitarray, sizeof(testarray)) == 0) {
+ printf("64-bit: ext2fs_set_bit test succeeded.\n");
+ } else {
+ printf("64-bit: ext2fs_set_bit test failed.\n");
+ for (i=0; i < sizeof(testarray); i++) {
+ printf("%02x ", testarray[i]);
+ }
+ printf("\n");
+ exit(1);
+ }
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_clear_bit64(bits_list[i], testarray);
+ }
+ for (i=0; i < sizeof(testarray); i++) {
+ if (testarray[i]) {
+ printf("64-bit: ext2fs_clear_bit failed, "
+ "testarray[%d] is %d\n", i, testarray[i]);
+ exit(1);
+ }
+ }
+ printf("64-bit: ext2fs_clear_bit test succeed.\n");
+
+ /* Do bigarray test */
+ bigarray[BIG_TEST_BIT >> 3] = 0;
+
+ ext2fs_set_bit64(BIG_TEST_BIT, bigarray);
+ printf("64-bit: big bit number (%u) test: %d, expected %d\n",
+ BIG_TEST_BIT, bigarray[BIG_TEST_BIT >> 3],
+ (1 << (BIG_TEST_BIT & 7)));
+ if (bigarray[BIG_TEST_BIT >> 3] != (1 << (BIG_TEST_BIT & 7)))
+ exit(1);
+
+ ext2fs_clear_bit64(BIG_TEST_BIT, bigarray);
+
+ printf("64-bit: big bit number (%u) test: %d, expected 0\n",
+ BIG_TEST_BIT,
+ bigarray[BIG_TEST_BIT >> 3]);
+ if (bigarray[BIG_TEST_BIT >> 3] != 0)
+ exit(1);
+
+ printf("64-bit: ext2fs_set_bit big_test successful\n");
+
+ /* Now test ext2fs_fast_set_bit */
+ memset(testarray, 0, sizeof(testarray));
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_fast_set_bit64(bits_list[i], testarray);
+ }
+ if (memcmp(testarray, bitarray, sizeof(testarray)) == 0) {
+ printf("64-bit: ext2fs_fast_set_bit test succeeded.\n");
+ } else {
+ printf("64-bit: ext2fs_fast_set_bit test failed.\n");
+ for (i=0; i < sizeof(testarray); i++) {
+ printf("%02x ", testarray[i]);
+ }
+ printf("\n");
+ exit(1);
+ }
+ for (i=0; bits_list[i] > 0; i++) {
+ ext2fs_clear_bit64(bits_list[i], testarray);
+ }
+ for (i=0; i < sizeof(testarray); i++) {
+ if (testarray[i]) {
+ printf("64-bit: ext2fs_clear_bit failed, "
+ "testarray[%d] is %d\n", i, testarray[i]);
+ exit(1);
+ }
+ }
+ printf("64-bit: ext2fs_clear_bit test succeed.\n");
+
+ bigarray[BIG_TEST_BIT >> 3] = 0;
+
+ ext2fs_fast_set_bit64(BIG_TEST_BIT, bigarray);
+ printf("64-bit: big bit number (%u) test: %d, expected %d\n",
+ BIG_TEST_BIT, bigarray[BIG_TEST_BIT >> 3],
+ (1 << (BIG_TEST_BIT & 7)));
+ if (bigarray[BIG_TEST_BIT >> 3] != (1 << (BIG_TEST_BIT & 7)))
+ exit(1);
+
+ ext2fs_fast_clear_bit64(BIG_TEST_BIT, bigarray);
+
+ printf("64-bit: big bit number (%u) test: %d, expected 0\n",
+ BIG_TEST_BIT, bigarray[BIG_TEST_BIT >> 3]);
+ if (bigarray[BIG_TEST_BIT >> 3] != 0)
+ exit(1);
+
+ printf("64-bit: ext2fs_fast_set_bit big_test successful\n");
+ free(bigarray);
+ exit(0);
+}
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