Printing Problems

Printing Problems

Post by Cyril LeBoeuf J » Mon, 15 Mar 1999 04:00:00

I installed MkLinux on a Power Mac 6100/60 two weeks ago. However, I have been
unsuccessful in being able to print either from a direct connection or from
AppleTalk Can anyone shade some light on my problem.
C. W. Le Boeuf, Jr.

(323) 758-9200

1. Solaris 2.7 Print then No Print Problem

Server Configuration: Sun UltraSPARC-10, 300MHz UltraSPARC processor, with
256MB of RAM running Sun Solaris 2.7

I've been struggling with a, for me, perplexing problem in getting a cgi to
compile and work.  Note that this
software has been working under SUN 2.5 and 2.6.

The program uses a number of i/o functions, including lseek, open, close,
read, printf, fprintf, fwrite, and fgetc, as well as mSQL database
functions.  The problem is that the printf works initially, but then later
stops working; albeit without error.

I've stepped through the code with gdb and see nothing unusual.

Although I wouldn't doubt that there could well be a program problem on my
part, I don't see it.

The program flow is as follows.  Please note that while the program is
substantial in size, the process flow is exactly as shown; hence 99% of the
program doesn't execute prior to the difficulty.  The difficulty remains
consistent whether run from the prompt or as a database maintenance utility
in which HTML is parsed and written back to the server.

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
. . .

int main()
    .  .  .

void initialization()
    llist entries;
    cgiHTMLStatus = read_cgi_input(&entries);
    formActionString = cgi_val(entries, "formAction");

    . . .

The second print statement doesn't appear!  the read_input_entries(...) is's cgihtml which is heavily used.  However, thinking
that it might be somehow connected with his code, I replaced
it with a version of my own and got exactly the same result - no printf
"after" output to stdout.

All software and libraries have been compiled on the same 2.7 system.

I have a hunch that somehow I have some incompatible headers or libraries in
the mix, but my checking has thusfar ruled that out.

I've tried lots of combinations in an effort to isolate the point where it
fails, but every combination has worked except for the combination I need to
produce the required functionality.  For instance, I have tried making a
program which contains all the same headers, but only the logic which is
exercised prior to the problem.  It worked!

I have several more things to try, but thought while I was trying them, I'd
check to see whether anyone was having any similar problems.  Any thoughts,
suggestions, clues, etc., would be appreciated.


Phil Welch


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