diff --git a/libisoburn/trunk/test/compare_file.c b/libisoburn/trunk/test/compare_file.c
new file mode 100644
index 00000000..714213f7
--- /dev/null
+++ b/libisoburn/trunk/test/compare_file.c
@@ -0,0 +1,172 @@
+/*
+  Compare two copies of a file object in as many aspects as i can imagine.
+
+  To compare tree /media/dvd and /original/dir :
+      find /media/dvd -exec compare_file '{}' /media/dvd /original/dir ';'
+
+  Copyright 2008 Thomas Schmitt, <scdbackup@gmx.net>
+
+  Provided under GPL version 2.
+
+
+  cc -g -o compare_file compare_file.c
+*/
+
+#include <ctype.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+
+
+/* @param flag bit0= compare atime
+               bit1= compare ctime
+*/
+int Compare_2_files(char *adr1, char *adr2, char *adrc,int flag)
+{
+ struct stat s1, s2;
+ int ret, differs= 0, r1, r2, fd1, fd2, i;
+ char buf1[4096], buf2[4096];
+ off_t r1count= 0, r2count= 0, diffcount= 0, first_diff= -1;
+
+ ret= lstat(adr1, &s1);
+ if(ret==-1) {
+   printf("%s : cannot lstat() : %s\n", adr1, strerror(errno));
+   return(0);
+ }
+
+ ret= lstat(adr2, &s2);
+ if(ret==-1) {
+   printf("%s : cannot lstat() : %s\n", adr2, strerror(errno));
+   return(0);
+ }
+
+ /* Attributes */
+ if(s1.st_mode != s2.st_mode) {
+   printf("%s : st_mode :  %7.7o  <>  %7.7o\n", adrc, s1.st_mode, s2.st_mode);
+   differs= 1;
+ }
+ if(s1.st_uid != s2.st_uid) {
+   printf("%s : st_uid :   %d  <>  %d\n", adrc, s1.st_uid, s2.st_uid);
+   differs= 1;
+ }
+ if(s1.st_gid != s2.st_gid) {
+   printf("%s : st_gid :   %d  <>  %d\n", adrc, s1.st_gid, s2.st_gid);
+   differs= 1;
+ }
+ if((S_ISCHR(s1.st_mode) && S_ISCHR(s2.st_mode)) ||
+    (S_ISBLK(s1.st_mode) && S_ISBLK(s2.st_mode))) {
+   if(s1.st_rdev != s2.st_rdev) {
+     printf("%s : %s st_rdev :  %lu  <>  %lu\n", adrc,
+            (S_ISCHR(s1.st_mode) ? "S_IFCHR" : "S_IFBLK"),
+            (unsigned long) s1.st_rdev, (unsigned long) s1.st_rdev);
+     differs= 1;
+   }
+ }
+ if(S_ISREG(s2.st_mode) && s1.st_size!= s2.st_size) {
+   printf("%s : st_size :  %.f  <>  %.f\n",
+          adrc, (double) s1.st_size, (double) s2.st_size);
+   differs= 1;
+ }
+ if(s1.st_mtime != s2.st_mtime) {
+   printf("%s : st_mtime :  %u  <>  %u\n",
+          adrc, (unsigned int) s1.st_mtime, (unsigned int) s2.st_mtime);
+   differs= 1;
+ }
+ if(flag&1) {
+   if(s1.st_atime != s2.st_atime) {
+     printf("%s : st_atime :  %u  <>  %u\n",
+            adrc, (unsigned int) s1.st_atime, (unsigned int) s2.st_atime);
+     differs= 1;
+   }
+ }
+ if(flag&2) {
+   if(s1.st_ctime != s2.st_ctime) {
+     printf("%s : st_ctime :  %u  <>  %u\n",
+            adrc, (unsigned int) s1.st_ctime, (unsigned int) s2.st_ctime);
+     differs= 1;
+   }
+ }
+ if(S_ISREG(s1.st_mode)) {
+   fd1= open(adr1, O_RDONLY);
+   if(fd1==-1) {
+     printf("%s : cannot open() : %s\n", adr1, strerror(errno));
+     return(0);
+   }
+   fd2= open(adr1, O_RDONLY);
+   if(fd2==-1) {
+     printf("%s : cannot open() : %s\n", adr2, strerror(errno));
+     close(fd1);
+     return(0);
+   }
+  
+   /* Content */
+   while(1) {
+     r1= read(fd1, buf1, sizeof(buf1));
+     r2= read(fd2, buf2, sizeof(buf2));
+     if((r1==EOF && r2==EOF) || (r1==0 && r2==0))
+   break;
+     if(r1==EOF || r1==0) {
+       printf("%s : early EOF after %d bytes\n", adr1, r1count);
+       differs= 1;
+   break;
+     }
+     r1count+= r1;
+     if(r2==EOF || r2<r1) {
+       printf("%s : early EOF after %d bytes\n", adr2, r2count);
+       differs= 1;
+   break;
+     }
+     if(r2>r1) {
+       printf("%s : early EOF after %d bytes\n", adr1, r1count);
+       differs= 1;
+   break;
+     }
+     r2count+= r2;
+     for(i= 0; i<r1; i++) {
+       if(buf1[i]!=buf2[i]) {
+         if(first_diff<0)
+           first_diff= i;
+         diffcount++;
+       }
+     }
+   }
+   if(diffcount>0) {
+     printf("%s : Content differs by %.f bytes. First at %.f\n",
+            adr1, (double) diffcount, (double) first_diff);
+     differs= 1;
+   }
+ }
+ close(fd1);
+ close(fd2);
+ return(!differs);
+}
+
+
+int main(int argc, char **argv)
+{
+ int ret;
+ char adr1[4096], adr2[4096], adrc[4096];
+
+ if(argc<4) {
+   fprintf(stderr, "usage: %s  path  prefix1  prefix2\n", argv[0]);
+   exit(2);
+ }
+
+ if(strncmp(argv[1], argv[2], strlen(argv[2]))!=0) {
+   fprintf(stderr, "%s: path '%s' does not match prefix1 '%s'\n",
+          argv[0], argv[1], argv[2]);
+   exit(2);
+ }
+ strcpy(adr1, argv[1]);
+ strcpy(adrc, argv[1]+strlen(argv[2]));
+ sprintf(adr2, "%s%s%s", argv[3], (adrc[0]=='/' ? "" : "/"), adrc);
+
+ ret=  Compare_2_files(adr1, adr2, adrc, 2);
+ exit(ret<=0);
+}
+