Programming :: SSL_write Returns SSL_ERROR_SYSCALL, EOF On Second Call

Oct 8, 2010

I am facing issue in my OPENSSL code. I have written openssl client. It sends request to the host and receives response for that request.

My problem is, it connects, sends request successfully to host at first time only in sencond attempt it fails on SSL_write(). where SSL_get_error() returns SSL_ERROR_SYSCALL error.

In that ERR_get_error() returns 0. man page shows "If ret == 0, an EOF was observed that violates the protocol".

Code Snippet.
w=SSL_write(SSLRequestData.ssl,c2s,c2sl);
switch(SSL_get_error(SSLRequestData.ssl,w))
{
case SSL_ERROR_NONE:
if(c2sl!=w)

[Code]....

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Programming :: Inotify_rm_watch Returns EINVAL On Legitimate Call?

Jul 29, 2011

I am working on software that is to run on a variety of linux machines where changing the os/version is not an option.My software uses the inotify_rm_watch call, and this is occassionally failing. In every case the operands are both valid, yet the result is EINVAL. This appears to only occurr when a watched file is deleted, and the read command on the inotify yeilds two events IN_DELETE_SELF AND IN_IGNORE (at the same time).I have seen a few messages detailing this same scenario - but no workarounds.

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Programming :: C++ - Basic Math Always Returns 0 ?

May 16, 2010

Code:

Why are basic math problems returning 0? I know that Integers can only hold whole numbers, and it had the exact same problem when I used floats. I am using GCC 4.4.4.

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Programming :: Setting Var Returns Command Not Found?

May 7, 2010

I have the following function, and it appears to set the var correctly, but then tries and executes the line as a command. Anyone know how to keep it from doing that?

PHP Code: SMALL_FILE_PERCENTAGE=88
MEDIUM_FILE_PERCENTAGE=10
LARGE_FILE_PERCENTAGE=2

[code]....

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Programming :: Use If Else Condition When Returns Empty Data?

Apr 27, 2010

Let say I would like to check /etc/profile whether defined umask 022

umaskcheck=$(What to defined here?)
if [ What to define here? ]
then

[code]....

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Programming :: C++ Class Member Pointer Changes After Function Returns?

Mar 30, 2011

I'm venturing into the world of OpenGL, but in the process of writing my graphics library I ran into a problem... My code is:

Code:
#include <stdio.h>
#include <stdlib.h>

[code]...

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Programming :: C Language Fuction Returns : Where And How Is The Fuctions Value Stored

May 23, 2010

I'm studying the C Language, None of the documents I'm reading covers returning values from a function. They state that the function sends the valve to the caller but that is the only info I have. Do I have to create a varible with the name of the function I called and is it stored there?

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Programming :: Query That Returns Columns Where Some Of The Values Are NULL

Dec 23, 2010

If I have a Query that returns columns where some of the values are NULL, is it possible to tell SQL to return all the NULL values as empty strings instead of the NULL datatype?

If the solution is vendor specific I am (unfortunately) using a Microsoft 2008 SQL server.

Example:

Code:
Select * from imaginary_table where id = 1
Might return:
Code:
Id: 1
Name:xyz

[Code].....

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Programming :: Struct Timeval Doesn't Keep After Function Returns

Jun 2, 2010

int GetTime(struct timeval tv)
{
gettimeofday(&tv, NULL)
printf("%d
", tv.tv_sec); /* here is the right value */
return 0;
}

[Code]....

What happend? struct timeval has a self timer?

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Programming :: Add Switch To Every Gcc/g++ Call?

Feb 23, 2009

I was wondering if there was a way to add a switch to a gcc/g++ call everytime. I have a few libraries that I need to compile for different processors. Each has a makefile which calls gcc to compile. Here is the best option I could come up with so far:Include a Makefile and define CC as gcc -mcpu=xxx.

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Programming :: System() Routine Returns: Access: Unix Error (2) No Such File Or Directory

Oct 23, 2010

I am running shell command through C program using system() routine.

I am executing "opcontrol --status" an executable using the this routine and I get the following error. access: unix error (2) No such file or directory

But when I give the complete path to the executable it runs perfectly.

The executable is installed in "/usr/local/bin/" And the path variable has this path.

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Programming :: Create A Script That Returns A List Of The Users Who Have Never Changed Their Password From /etc/shadow

May 17, 2011

I need to create a script that returns a list of the users who have never changed their password from /etc/shadow. As I know on linux there is a command "chage" used for find last password change.

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Programming :: Call C Executable Inside C

Jan 8, 2010

i have only basic knowledge of C so guys plz help me...is C language support call the C executable inside the C ?example contect mainA.c have a many function define in the struct,when i compile mainA and make a executable the name is ( A ),can i use executable C inside the C <my C program call the executable ( A ) > .

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Programming :: Execvp System Call?

Apr 3, 2011

in below program why was new_args[0], rather than the reference the_cmd, passed to the execvp system call?

Code:
/*
A _very_ limited shell program

[code]....

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Programming :: Call The Executable File From The GUI?

Jun 1, 2010

I have created a executable file using c and I have also created a GUI using GTK+. Now how can I call the executable file from the GUI with arguments passing to the executable file.

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Programming :: How To Call Fortran Subroutine From IDL

Sep 29, 2010

There are examples everywhere about calling f77 subroutine from IDL, but I have not found any material about IDL calling fortran written in f90 way(free style). I tried the following example, but write the subroutines in free style. When I run the makefile, it gives an error 'undefined reference to main_'.

Code:

SUBROUTINE SUM_ARRAY(argc, argv) !Called by IDL
INTEGER*4 argc, argv(*) !Argc and Argv are integers
j = LOC(argc) !Obtains the number of arguments (argc)

[code]....

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Software :: Script That Call A Java Program That Call A System Command?

Nov 29, 2010

In practice I have a script that call a java program that call a linux system command. The script if I run it, from a shell functions well,so it is not a java problem. The problem come out when i put this script in a crontab schedulation. The result in this case is that java do not execute the system command. I think it depends on crontab

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Programming :: Clarification In The Select System Call?

Dec 8, 2010

I have a process that forks, where the childs puts some data of random size and exits while the parent should get the data and does some manipulation.. here I have used a pipe for child to write the data and parent to read the data.. Child simply dumps the data, and the data is of any size even child and parent doesnt know.
I have used select in the parent to see whether there is any data coming on the reading end of the pipe.. if there is a data.. I copy into a buffer.. Im reading the data continusly when the child exits after closing the writing end of pipe. Parent gets blocked on the read part But my question is how parent know the other of pipe is closed when using the select call. In otherwords.. while using select in readfds, how would i know the other end has closed the pipe..

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Programming :: C - System Call & Error Checking?

Sep 18, 2010

I am trying to figure out how i would go about finding out where system call is made and error checking is not done. I have code below, if somebody can point me in the right direction where system call is made but error checking is not done.Quote:

#include "shell.h"
#include <stdio.h>
#include <string.h>

[code]....

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Programming :: Call Shell Script In Perl Pm

Sep 4, 2010

i used ldap for authentication.now i have a perl script that users use it for login(contact.pl),then this script calls a shell script(ip.sh) for create iptables chain.

when i call that into contact.pl ,it just prints: usr/sbin/iptables but ip chains didn't change.what is problem? whenever run ip.sh in bash it works correctly

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Programming :: How To Use Bashrc To Redirect Executable Call?

May 24, 2011

I need to redirect a /usr/sbin/sendmail command to $HOME/bin/msmtp .The sendmail command would be coming from a PHP5 application. I'm assuming the best way is to use .bashrc, but .htaccess is also available.The remote server is a shared web host which is running Debian 4.0.I do not have root access.I have SSH access.

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Programming :: How To Call Array Dynamically Into Script?

Jul 20, 2011

I have a script which takes an array as an input to the file.ex: test.ksh -l <array_value>

Every time I dont get the same array name.EX: test.ksh -l x ; where x="a b"test.ksh -l y ; where y="c d"

I store the value I get in l in varaible myLvalue.Now indise my Script I want to run a for loop for thevalue I get in -l.If I write the for loop as below. I'm getting value x.However I'm expecting the loop to run for a and b.

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Programming :: How To View New Added System Call

Aug 30, 2010

I successfully added a new system call in CentOS Kernel but I don't know where to view it! My kernel version is -2.6.32.5

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Programming :: Process Of Creating System Call?

Mar 24, 2011

how to create a new system call Linux? what is the process of creating ?my project is to create a system call for displaying owner of a file..where exactly we have to write the system call code? and where are the places need to change ?

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Programming :: Write A Bash Script To Call From A Terminal?

May 24, 2010

I am trying to write a bash script to call from a terminal that will change the terminal title. I am using ubuntu 10.04. The script is meant to be used in the gnome-terminal.

Here is what I have:

Code: #! bin/bash
echo "New title: c"
read title
echo "33]0;$titl07c" -e

[Code]....

it doesn't work

I think the problem has to do with modifying PS1 inside the bash so i tried this:

Code: echo `export PS1="[e]1;u@h:wa]${debian_chroot:+($debian_chroot)}u@h:w$ "` and it still didn't work.

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Programming :: C / C++ Scripts For Make Hunting Call In Open IMS

Nov 15, 2010

I am a newbie in linux n programming, I need to use ubuntu for my research at school about building an IMS server use openims.

The problem is I need an additional script in C/C++ for my openims server to make an extension call. I hope one number can represent 3 client as receiver/operator. So, when I call the number, the server can forward the call to those three receiver by hunt.
1st call will be forward to the 1st receiver.
2nd call will be forward to the 2nd receiver.
3rd call will be forward to the 3rd receiver.
then, 4th call will be forward back to the 1st receiver, etc.

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Programming :: Block On Write Call To TtyACM Device

Nov 1, 2010

I have a write call to a ttyACM serial device that blocks after several hundreds bytes are written.I'm writing in ~25 byte chunks, so I have 5-8 successful writes, then the next write blocks forever.I can bypass the blocked call using select, but I can never call write again without closing and re-opening the port.

The serial port is opened correctly because I can read from it just fine. Write permissions are correct, and it's opened RW.The code is likely correct because I tested the same code using the same device on a pure RS-232 serial port, and it worked fine - no block. Is there anything to know about the linux ACM module?It's my understanding that write calls basically shouldn't block.They're supposed to return -1 if there's an error.

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Programming :: Scenario For Call Shell Function From Mysql?

Apr 18, 2011

I am trying a scenario for calling a shell script when ever a trigger is called. Can some one guide me how to achieve this scenario. Also it should passes the value from the table to the shell script. Can some one explain me along with the example.

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Programming :: Test New System Call Before Compiling Kernel?

Apr 2, 2009

I want to test my system call that be goint to add to kernel, But when i finish compiling kernel, i found my system call code not work. the code i want to return the system time "struct timespec":

/*----------Start of mycall.c----------*/
#include <linux/linkage.h>
#include <linux/time.h>
#include <linux/kernel.h>

[code]....

so i want a method to test the new system call before compiling kernel.

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Programming :: CGI Shell Scripting : Possible To Call Function From Other Script?

Mar 15, 2011

I got two cgi shell scripting files. Is it possible when i am in file 1, to call a function from file 2?

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