similar to: Can copying a file damage the original?

What happens when rsync'ing a file that is damaged bacause of a bad sector on the source medium? I assume that the file will be synchronized partially, overwriting any file of the same name on the destination medium. If that is the case, is there a way to make rsync check readability of files before overwriting them on the target medium (e.g. by synching to a temp. file and, once

I just discovered two directories with the same number of files and the same number of hard links but different size: # stat /home/david/linuxburg/fax.old/docq_ps.nnnn \ /hdsync/home/david/linuxburg/fax.old/docq_ps.nnnn File: `/home/david/linuxburg/fax.old/docq_ps.nnnn' Size: 8192 Blocks: 16 IO Block: 4096 directory Device: 801h/2049d Inode: 52060

On a customer's machine running SuSE 9.2, the size of the occupied space on the harddisk is reported incorrectly by "df -h". After we noticed the problem, I rebooted the machine and had it checked by "e2fsck" (check forced with "tune2fs -C 40", we are not on location). Right after the reboot I proceeded as follows, but I could not find any information about

Hi, The klee library directory is determined at compile time and cannot be changed afterwards. Have a look at tools/klee/main.cpp to see how it is computed. I usually use Klee without any install step, right from the build directory. This has never given me the error you see. Hope this helps, Jonas On Wed, Jun 5, 2013 at 5:26 PM, Alexandru Ionut Diaconescu < alexandruionutdiaconescu at

Hi all, I'm new to llvm and klee. Now I'm trying to build up coreutil with klee. Following the steps online (http://klee.llvm.org/TestingCoreutils.html), I went to step 3 and stuck. When I try to run: klee --libc=uclibc --posix-runtime ./cat.bc -version Error occurred like: klee: error: Cannot find linker input '/lib/libc.a' klee: ModuleUtil.cpp:42: llvm::Module*

Hello everyone, I am a novice with KLEE under LLVM. I am trying to build a KLEE project (on a new LLVM environment) and I have the following problem: echo Testing... Testing... echo There should be no assertion fails! There should be no assertion fails! klee -taint=direct taint_direct.o KLEE: output directory = "klee-out-8" klee: error: Cannot find linker input

Hi, I'm currently trying to find and fix memory leaks (compiling with ``-fsanitize=address``) in the KLEE tool [1] an having found some leaks and I'm having trouble suppressing them. I'm trying to suppress them using the ``-fsanitize-blacklist=blacklist.txt`` option as documented at [2]. I'm using Clang 3.7 ( Arch Linux package 3.7.0-6). The sort of reported leaks I see are ```

> Excuse me for the diversion but, is that interpreter of LLVM IR available > somewhere? Details on how it works, performance, etc? I'd be interested Yes it is available. The tool (KLEE [1]) is actually a lot more than an interpreter (although it can be used as one). KLEE allows you to mark certain variables (e.g. program inputs) as "symbolic". What this means is that the

Dear Developers, I am a Master's student at the ECE department of the University of Florida, USA.​​ For my research project, supervised by Prof. Mark Tehranipoor<http://tehranipoor.ece.ufl.edu/> and Prof. Farimah Farahmandi<http://farimah.ece.ufl.edu/>, I need to use Clang LLVM DataflowSanitizer library in KLEE. However, I have faced some difficulties (explained below) while

Hi, I am trying to evaluate how complex would be to modify KLEE ( http://klee.llvm.org/ ) so that it can run LLVM bitcode compiled from Java code obtained with vmjc (from the VMKIT project). Your feedback will be very appreciated. I am familiar with KLEE but I would like to know more about VMKIT, so please point me to the right docs/source code if appropriate. After a quick look over

Hi Andreas, Cloud9 is a project that has an extensive POSIX environment model which also lets you symbolically execute multithreaded programs. It is based on KLEE. http://dslab.epfl.ch/pubs/cloud9.pdf Portend builds on top of Cloud9 to perform race detection/classification: http://dslab.epfl.ch/pubs/portend.pdf Cloud9 code base is also public, it might be of interest to you:

Are there any "current" Linux distros that have installable packages for llvm, clang, nad klee? I am struggling to get klee built and need a working klee setup asap. Thanks in advance, Donald

Hi, I'm currently working on the KLEE tool that uses LLVM (2.9 because that's what KLEE currently uses) and in particular I'm having an unexpected problem with the llvm::cl::bits class. I try something like this... enum testx { A,B }; cl::bits<testx> queryLoggingOptions("option",cl::values( clEnumVal(A,"this is a"),

Hi, I'm a contributor to the KLEE project (based on LLVM) and I'm currently looking at trying to add the following functionality to KLEE... (1). Be able to iterate through registered command line options and programmatically hide them. We're interested in this because we wish to hide (unless -help-hidden is called) several LLVM options. (2). Be able to place an option into a category

What did you mean by "array access bounds expressions"? If you want to do something along the lines of constraint-based bounds check elimination, you can check out SAFECode. I don't think KLEE would be very useful for proving the safety of memory accesses, rather the lack thereof. Also, KLEE doesn't handle symbolic array sizes. If you can give more details about your project,

Hi, I am using klee-gcc to compile 'findutils', but I don't know why the variables are all replaced with temp variables(such as %10) and instructions are reordered for optimizations, how can I generate the bytecode and reserve the program variables. I used the next commands without any optimization options: 1. $ ../configure --disable-nls CFLAGS="-g" 2. $

Hi all, I start this on in a new thread. I setup the deny-user setting to temporarily prevent users from logging in and (that would be great) also stop mail delivery for said user. All this is because of our upcoming migration. Now it seems that lmtp is ignoring this setting. This is from the logfile: Aug 21 13:01:00 klee dovecot: lmtp(pid): Connect from IP Aug 21 13:01:00 klee dovecot:

When I try to execute the following example, I get an error message: /usr/local/lib/ruby/gems/1.8/gems/mocha-0.5.4/lib/mocha/object.rb:40: in `expects'': undefined method `stub'' for nil:NilClass (NoMethodError) from test8.rb:5 What could be the reason? I tried with the latest Mocha Ruby gem, and I also tried it with the Rails plugin. The example: require

Hi I need a concolic execution framework based on LLVM. As far as I know, KLEE might be the best choice. However, KLEE(the stable version) is based on LLVM 3.4. I compiled my code with the latest LLVM, whose version is 7.0. Anyone know whether the bitcode could be used by KLEE. Or do I have to compile with the old version of LLVM again. Furthermore, if you have any other concolic execution

Hi, I'm working on a tool (KLEE) that interprets LLVM bitcode. One of the things it does is it instruments the LLVM bitcode with checks for division by zero. It does this by injecting calls to a function "klee_div_zero_check(long long divisor)" just before every division instruction (e.g. SDiv). These checks are injected by a pass that has been implemented in KLEE. This