• C

Help with execl()

I wrote this program that does a few things and then is supposed to call another program. I tried using system(), but i kept getting a message about "Program too big to fit in memory". So i tried using the function execl(). If i try and run it through a DOS box under win95, works like a charm. But if i try and run it from DOS, it dumps and doesnt run.

Here is the basic pseudo-code:
couple of print statments
call one function
execl("C:\\windows\\scan.exe");

NOw when i run it through does i get a message about an error due to SIGNAL SIGSEVE. What does that mean? ANyone know how i can fix this problem?
GreatOneAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

marvinmCommented:
Your call should really be execl("C:\\windows\\scan.exe","C:\\windows\\scan.exe",NULL);
I'm not familiar with SIGNAL SIGSEVE
0
alexoCommented:
SIGSEGV == Illegal storage access. A.k.a. Segment violation.

Check the arguments to execl().  My documentation says:
    int _execl( const char *cmdname, const char *arg0, ... const char *argn, NULL );

Also, I'd suggest using execv() instead of execl()

Example:

    char* prog = "myprog.exe"
    char* args[2] = { prog, NULL };
    execv(prog, args);

If you want to pass command line arguments, make the "args" array bigger and assing the items between the "prog" and the "NULL" to point to the arguments.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C

From novice to tech pro — start learning today.