Programming :: IOCTL Error - To Get The Ssid Through C Program
Feb 28, 2011I was trying to get the ssid of WLAN through the following C program
What is the cause of this error?
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Programming :: Return Error From Ioctl Command?
Jul 21, 2010I'm creating a usb device driver that needs to be able to read from two different endpoints. I couldn't see any way of having two read functions in the driver, so I got round this by reading from one of the endpoints with read, and the other with ioctl.However this hasn't worked, the ioctl call from c returns -1. I added a printk command in the driver in the ioctl function, however looking at kern.log I can see that this function is never being called. Does anyone have any ideas as to what the problem called be, or a better method of being able to read from two different endpoints?
View 2 Replies View RelatedFedora :: Modify Ioctl TIOCMWAIT To Return The Same Thing That Ioctl TIOCMGET Returns?
Jul 4, 2011I want to modify ioctl TIOCMWAIT to return the same thing that ioctl TIOCMGET returns. Currently wait returns an int of zero or -1 when a change in status occurs. Why not make it return the new status?
This will make the operation faster by not requiring another call to ioctl.The extra call requires 2 to 16 uSeconds to complete on my x64 laptop. How would I make this proposal to the kernal people?
Programming :: Writing And Reading Driver Value In Ioctl?
Jan 18, 2011I just want to read and write some values (integer) to my driver. I used put/get user but always getting errors.
driver
Quote:
int Wert;
static int device_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsinged long arg)
int ret;
[code]...
Quote:
int WERT
ret=ioctl(fd, SETIT, WERT)
ret=ioctl(fd, GETIT, WERT)
if i say in C++ WERT is 5 the value arg of the driver becomes 5 but not WERT the returnvalue of get and put user is -1 so it failed.
Programming :: Find The Device Name For Ioctl (sd, SIOCGIFINDEX, &ifr) Call?
Feb 12, 2010Hi I am trying to add the device by using followig code strip and it says that eth1 is not defind in the code.
strncpy(ifr.ifr_name,eth1,IFNAMSIZ);
if (ioctl(sd, SIOCGIFINDEX, &ifr) == -1) {
return 0;
}
How do I write down the DEVICE name in the ifr.ifr_name structure ?
Programming :: Console Window Size - Why Ioctl Always Return 0 Width
Jul 1, 2010I use ioctl to get the console window size (the SSH window). I use the following code:
struct winsize ws;
int returnValue = ioctl(pCommandStructure->terminal, TIOCGWINSZ, &ws);
int numberOfColumnsOfTerminalWindow = ws.ws_col;
When I debug on linux pc, it gives me the correct window width. But after I try it on router (this is my enventual place where my code shall run), ioctl always give me 0 width, that is, numberOfColumnsOfTerminalWindow == 0. but the returnValue is 0 which means that the function call succeeds.
Programming :: Ioctl TIOCMGET Call Doesn't Detect TIOCM_CTS
Apr 6, 2011I am having the following problem. The following code works fine on my P.C. Ubuntu x64, and on a jetway mini-itx board with an atom processor. The problem is, the same code doesn't work on the intel equivalent of the jetway board. I thought the maybe, I didn't have the port configured right, so I turned on Hardware Flow control and also tried turning on the modem bits I needed with TIOCMBIS. Neither worked. Here is the code. There are two threads, one of them, respsponding to the client, and using the RTS and DTR pins to power two relays. The other, manages listening to CTS and DSR for input. Here is the class with the first thread.
Code:
/*
* DigitalIOCore.cpp
*
* Created on: Nov 1, 2010
* Author: jonathan
[code]....
Ubuntu :: Error: Device-mapper: Reload Ioctl Failed: Invalid Argument
Jun 13, 2010I'm having some difficulities with truecrypt and cannot figure out what's wrong since this is my first attempt to create hidden encrypted partition. I'm using ubuntu 9.10 64b with latest 6.3a truecrypt. After using truecrypt gui (just command truecrypt) I've tried: create volume-->create volumne within a partition/drive-->hidden trucrypt volume --> select some /dev/sdX by my choice --> select aes & sha512 --> password --> and format it.
when formating finished message "wrong ss, swith or wrong superblock of /dev/loop0" appeared. I've got no idea what could I do with it neither know whats program trying to do! Ok formating's done, then if you're trying to mount that partition then I would expect prompt for password, but that did not happen ...
EDIT: sudo mount /dev/loop0 /media/tmp/ also complaint about wrong superblock, but that does not ring any bell since i've got no idea what /dev/loop0 is or is for...
EDIT2: I've tried another approach also:
sudo truecrypt -t -c
sudo truecrypt -t /dev/sda3 --filesystem=none
but the first command finished creating 100G drive in 1 sec (nonsense) and latter one prints:
Error: device-mapper: reload ioctl failed: Invalid argument
Command failed
OpenSUSE Hardware :: Mounting Encrypted Fs Error : Remove Ioctl Failed: Device Or Resource Busy
Dec 5, 2010The error message I keep getting during mounting is:-
device-mapper: remove ioctl failed: Device or resource busy
This is from ane external USB HDD I use as a backup device. I've tried formatting it as ext4 ane encrypting it from the command line
# mkfs.ext4 /dev/sdc1
# cryptestup luksFormat /dev/sdc1
which run without errors but an attempt to mount throws up the above error as well as saying - you must specify the file type (tried that) - and fails to mount. I've tried using YaST to format and encrypt it which throws up the same error when I run mount but actually does actually mount the filesystem Googling around has brought up info saying that it's probably a race condition brought on by invalid udev rules. I've got a (mostly) working system and the udev rules documentation leaves more confused than when I started.
Programming :: Error In My C++ Program ?
Mar 15, 2011The following is the error in my program :
Here is my program...
Programming :: Error In A Program For Udpserver
Oct 28, 2010Code:
Above is a code for UDP server which I am trying.
When I compile it I get following errors
Code:
Programming :: Error In Ruby Program
Nov 18, 2010I have the following code:
Code:
And it gives this error:
Code:
Programming :: C++ Compiler(G++) Comes Up With Error When Try To Compile A Program Using Qt
May 26, 2010I am using the C++ compiler G++ to compile my programs on Linux Mint 8 - Gnome.
I recently installed QT and when I tried to compile a simple "Hello World!" program it gave me this error:
Quote:
This is the code in HelloWorldQt.cpp:
Code:
I have tried using GTK instead but I get a similar error.
Programming :: C Program - Undefined Reference Error ?
Jul 21, 2010I'm building my main program on SUSE using C, but the compiler returns the error below.
Code:
Here's my code to which the errors are pointing to:
Code:
Programming :: Error Compiling C++ Program Using C Library
May 8, 2010I've created 3 files: swap.h and swap.c then make static library from it
Code:
Then I write 2 program to test this library: test_swap.c and test_swap.cpp
I compile
Code:
What's wrong with this in C++? And how can I make a library that can work both for any C and C++ program?
Here the source code
Code:
Code:
Code:
Programming :: Get An Error Using A Namelist In A Fortran 90 Program ?
Aug 26, 2010I have a program which reads some parameters in from an input file before solving a differential equation. This program compiles fine, I'm using Numerical Algorithms Group (NAG) libraries to solve the differential equation so I'm also the NAG compiler called nagfor.
The namelist I have is declared as follows:
And the input file is:
When I run the code I get the following error message:
I really can't see what's wrong with this code.
Also, I'm using Fedora 11, and running the code in tcsh if this is relevant.
Programming :: Linker Error - Couldn't Get The Program To Link
Jul 9, 2010I have a simple C program which uses ncurses library and I am having linker issues and couldn't get the program to link.
[Code]...
So I think the ncurses libraries are in place but gcc still couldn't link. I am totally stumped.
Programming :: C - When Write A Program That Gives The Segmentation Fault Error
Jun 9, 2010I am using Ubuntu 9.04 linux 2.6.28-11-generic. When I write a program that gives the "Segmentation fault" error, or when I send this signal (SIGSEGV) to a program, the "Segmentation fault" is shown and no core dumped. When I look for "core" file in the current directory, I can't find it, too.
View 2 Replies View RelatedProgramming :: Fortran Program--encountered Run Time Error?
May 19, 2011i am graduate student and my X colleague gave me this Fortran 77 program to run my result files with. She is no longer reachable. I compiled the following program with gfortran, it compiled well but, when i run it, gave me end of file error. My output file (which is the input file for this program (DFILE1) ) has about 78,000 lines of velocities of atoms (Vx, Vy, Vz with 1000 steps.. an example of some of the atom's velocities in the 1st step is given at the end of this program). I will be highly obliged if any one can help me with this.I run this program on opensuse linux 11.3 version /32 bit/i586
error message:
Code:
At line 124 of file v.autocorrelation.f (unit = 10, file = 'DFILE1')
Fortran runtime error: End of file
Code:
PROGRAM TCORR
COMMON / BLOCK1 / STORX, STORY, STORZ
COMMON / BLOCK2 / VX, VY, VZ
COMMON / BLOCK3 / VACF, ANORM
C *******************************************************************
code....
Programming :: Linker Error For A Singleton Class Program
May 5, 2011I am getting a linker error for a simple program to represent a singleton class.
Find below the program which I have written:
Programming :: Error With Compiling Program 'can Not Be Used When Making Shared Object'
Oct 14, 2010I've got an error with compiling a program: relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC /usr/lib/python2.5/config/libpython2.5.a: could not read symbols: Bad value collect2: ld a retourn 1 code dtat d'excution make[2]: *** [bindings/_yafqt.so] Erreur 1.
View 1 Replies View RelatedProgramming :: Writting A C++ Program Using Netbeans And Keep Getting Error About Finding My Header
Feb 14, 2011Below are the header files and the program:
using namespace std:
Programming :: Get Console Window Width - Why Ioctl Always Return 0 Width
Jul 1, 2010I use ioctl to get the cosole window size (the SSH window).
I use the following code:
When I debug on linux pc, it gives me the correct window width. But after I try it on router (this is my enventual place where my code shall run), ioctl always give me 0 width, that is, numberOfColumnsOfTerminalWindow == 0. but the returnValue is 0 which means that the function call succeeds.
Programming :: Program Stops Working After A Time With "libncurses.so.5 Error 24"
Oct 6, 2010The error is: error while loading shared libraries: libncurses.so.5: cannot open shared object file: Error 24 This occurs after a good time of running, after I added some file stuff to my code. I can't see why this is happening.
Code: Code:
// Get CPU Temperature
char sensorsRaw[128];
system("sensors >& .sensors");
std::ifstream fileIn;
fileIn.open(".sensors");
[Code]...
Programming :: Program A SH - Bash Program With Zenity To Play Radio Based On A Site?
Feb 15, 2011I will have to code this. However I am lacking of time since I have too much to do. make a short code bash/dash to prompt the country with Zenity, then, get the PLS or m3u url and prompt with another zenity which radio to play. http://www.listenlive.eu/index.html
My code to get url's radio country.htm is:
Code:
Programming :: Open Or Run A File/program Through A C++ Program
Jan 15, 2010Ok so Basically i have 2 questions
1. i know how to create a file with c++ using but is there a way to save it to a specific location on your computer with windows and linux
Code:
2. i need to know how to run/execute/open a file in a c++ program im using and its not working
Code:
Ubuntu Networking :: What Is SSID And What Is It Used For ?
Jun 10, 2010I am setting up a netbook with linux.I need to edit a file and must know my SSID. What is a SSID and what is it used for how do I find out what mine is?
View 3 Replies View RelatedOpenSUSE Wireless :: Cannot Connect To A Hidden SSID
Nov 13, 2009Installed 11.2 last night with KDE4. Using "Connect to other network" I could see all the private networks around, including my own.
Mine has an hidden SSID and WPA2-PSK security. Regardless of what I tried I couldn't connect. Both BSSID and password are correct (but there was no other choice than "WPA/WPA2 personal" under security).
So I go to work today and connect to an unsecure network with a visible SSID (and a lower signal quality) without any problems.
OpenSUSE Wireless :: Fix For Knetworkmanagers Hidden SSID?
Mar 26, 2011Summary of issue: You cannot connect to a wireless network with a hidden ssid, while using knetworkmanager.This leaves you with the choice of using ifup, yast which uses ifup but provides a gui for new users, etc. But thanks to glistwan helpful post there is a simple way to fix this issue, while continuing to use knetworkmanager.Step 1 Get the wireless name of the hidden network, for example we will be looking for "Tree".Tree is not on the list of courseStep 2 Open the Terminal and enter super user mode.
Code:
Lin@Lin1:~> su
Password:
[code]....
Ubuntu Networking :: How To Choose Which Of Three Ap's To Connect To - Same Ssid ?
Jun 16, 2010I have three routers (linksys wrt54gl, ddwrt). I'm trying to use wds bridging, got two of them linked, but not the third. All three routers have the same SSID. I'm using Ubuntu 10.04 netbook remix.
My problem is I need to choose which of these my laptop connects to. Right now it connects to the one router which isn't playing nice with wds. I need it to connect to one of my other routers. I see the other signals using nm-tool, but they don't show in nm-applet. I created a connection in NetworkManager specifying the SSID + mac address of the correct router, but the tray applet doesn't show any options for connecting to manually configured networks, and I can't find any other useful app. I suppose I could rtfm for iwconfig et al, but Ubuntu ought to have an easier way.