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      1 /*
      2  * This testing program makes sure the byteswap functions work
      3  *
      4  * Copyright (C) 2000 by Theodore Ts'o.
      5  *
      6  * %Begin-Header%
      7  * This file may be redistributed under the terms of the GNU Library
      8  * General Public License, version 2.
      9  * %End-Header%
     10  */
     11 
     12 #include <stdio.h>
     13 #include <string.h>
     14 #if HAVE_UNISTD_H
     15 #include <unistd.h>
     16 #endif
     17 #include <fcntl.h>
     18 #include <time.h>
     19 #include <sys/stat.h>
     20 #include <sys/types.h>
     21 #if HAVE_ERRNO_H
     22 #include <errno.h>
     23 #endif
     24 
     25 #include "ext2_fs.h"
     26 #include "ext2fs.h"
     27 
     28 __u16 test1[] = {
     29 	0x0001, 0x0100,
     30 	0x1234, 0x3412,
     31 	0xff00, 0x00ff,
     32 	0x4000, 0x0040,
     33 	0xfeff, 0xfffe,
     34 	0x0000, 0x0000
     35 	};
     36 
     37 __u32 test2[] = {
     38 	0x00000001, 0x01000000,
     39 	0x80000000, 0x00000080,
     40 	0x12345678, 0x78563412,
     41 	0xffff0000, 0x0000ffff,
     42 	0x00ff0000, 0x0000ff00,
     43 	0xff000000, 0x000000ff,
     44 	0x00000000, 0x00000000
     45 	};
     46 
     47 int main(int argc, char **argv)
     48 {
     49 	int	i;
     50 	int	errors = 0;
     51 
     52 	printf("Testing ext2fs_swab16\n");
     53 	i=0;
     54 	do {
     55 		printf("swab16(0x%04x) = 0x%04x\n", test1[i],
     56 		       ext2fs_swab16(test1[i]));
     57 		if (ext2fs_swab16(test1[i]) != test1[i+1]) {
     58 			printf("Error!!!   %04x != %04x\n",
     59 			       ext2fs_swab16(test1[i]), test1[i+1]);
     60 			errors++;
     61 		}
     62 		if (ext2fs_swab16(test1[i+1]) != test1[i]) {
     63 			printf("Error!!!   %04x != %04x\n",
     64 			       ext2fs_swab16(test1[i+1]), test1[i]);
     65 			errors++;
     66 		}
     67 		i += 2;
     68 	} while (test1[i] != 0);
     69 
     70 	printf("Testing ext2fs_swab32\n");
     71 	i = 0;
     72 	do {
     73 		printf("swab32(0x%08x) = 0x%08x\n", test2[i],
     74 		       ext2fs_swab32(test2[i]));
     75 		if (ext2fs_swab32(test2[i]) != test2[i+1]) {
     76 			printf("Error!!!   %04x != %04x\n",
     77 			       ext2fs_swab32(test2[i]), test2[i+1]);
     78 			errors++;
     79 		}
     80 		if (ext2fs_swab32(test2[i+1]) != test2[i]) {
     81 			printf("Error!!!   %04x != %04x\n",
     82 			       ext2fs_swab32(test2[i+1]), test2[i]);
     83 			errors++;
     84 		}
     85 		i += 2;
     86 	} while (test2[i] != 0);
     87 
     88 	if (!errors)
     89 		printf("No errors found in the byteswap implementation!\n");
     90 
     91 	return errors;
     92 }
     93