FIFO's and asynchronousity?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Mplayer fifo.

Hi all, First of all, sorry for the pastebin link. The code tags aren't working for me. #!/bin/bash # while-menu-dialog: a menu driven - Pastebin.com This is a channel "changer" shell script i'm working on. It uses dialog to display the menus. It...

2. UNIX and Linux Applications

FIFO

Hello , I am working on unix FIFO IPC. i have a doubt regarding that. If the fifo is updated(write()) through one process....can we able to send any signal that fifo is updated and ready to get read...to other process.??

3. Programming

Help With FIFO problem...

=server.c= #include <stdio.h> #include <stdlib.h> #include <sys/stat.h> #include <sys/types.h> #include <unistd.h> #include <errno.h> #include <fcntl.h> #include <string.h> #include <signal.h> #define MSGSIZE 50

4. Programming

fifo

Dear friends i'm want to implement a program which one file is split into fragments by the server (by some random size) and sent to some processes, so these processes get randomly the fragments of the original file from the server, then the downloader randomly connects to some of these processes...

5. Programming

How to see a FIFO from all the threads?

Hello C programming fellows!!! I'm doing a program with multiple threads in gnu/linux, ubuntu for beeing precise... This program consist in multiple threads, as logical each thread do different things and communicate to each other using IPC. The problem is that in "process 1" I have a...

6. Programming

help About fifo and thread

hi, my problem is i have 10 thread for produces double two dimensional array these will produces 2d array 400 times ,then i have a thread to takes a two dimensional array then it inverse , and most 10 array can be in the fifo , and threads given takes one by one, now my problem is , i cant...

7. UNIX for Dummies Questions & Answers

Doubts on FIFO

Hi , I m beginner for Unix and i want to use FIFO in my 2 Scripts . I want 1 script to read data from FIFO and other will write into FIFO. Despite reading so many articles/posts i am still unable sunchronize my scripts. My doubts are 1> Do We require both scripts as daemons to use...

8. Programming

how to use fifo

hi, I have a problem. I've done a lil program which gets from the server the given persons username a personal folder. I made it with a pipe calling popen with a command, but how can i make the same thing using fifo. I make the fifo with mkfifo() func. and than what. How do I tell the sertver using...

9. UNIX for Advanced & Expert Users

FIFO Pipes

Hi...Can anyone please guide me on FIFO Pipes in UNIX.I have lerant things like creating fifo pipes,using them for reads and writes etc.I want to know what is the maximum amount of memory that such a pipe may have? Also can anyone guide me on where to get info on this topic from?

10. UNIX for Advanced & Expert Users

FIFO over NFS

Hi All L2000-44 HP-UX 11.00 I am attempting to setup a FIFO over NFS. Directing and reading from the FIFO works fine on the local machine - however when I direct to the FIFO from a server which has the directory NFS mounted it does not work. The a process to read from the FIFO on the local...

LEARN ABOUT DEBIAN

askpass-fifo

ASKPASS-FIFO(8mandos)						   Mandos Manual					     ASKPASS-FIFO(8mandos)

NAME

       askpass-fifo - Mandos plugin to get a password from a FIFO.

SYNOPSIS

       askpass-fifo

DESCRIPTION

       This program reads a password from a FIFO and outputs it to standard output.

       This program is not very useful on its own. This program is really meant to run as a plugin in the Mandos client-side system, where it is
       used as a fallback and alternative to retrieving passwords from a Mandos server.

       This program is meant to be imitate a feature of the askpass program, so that programs written to interface with it can keep working under
       the Mandos system.

OPTIONS

       This program takes no options.

EXIT STATUS

       If exit status is 0, the output from the program is the password as it was read. Otherwise, if exit status is other than 0, the program was
       interrupted or encountered an error, and any output so far could be corrupt and/or truncated, and should therefore be ignored.

FILES

       /lib/cryptsetup/passfifo
	   This is the FIFO where this program will read the password. If it does not exist, it will be created.

EXAMPLE

       Note that normally, this program will not be invoked directly, but instead started by the Mandos plugin-runner(8mandos).

       This program takes no options.

       askpass-fifo

SECURITY

       The only thing that could be considered worthy of note is this: This program is meant to be run by plugin-runner(8mandos), and will, when
       run standalone, outside, in a normal environment, immediately output on its standard output any presumably secret password it just
       received. Therefore, when running this program standalone (which should never normally be done), take care not to type in any real secret
       password by force of habit, since it would then immediately be shown as output.

SEE ALSO

       intro(8mandos), fifo(7), plugin-runner(8mandos)

COPYRIGHT

       Copyright (C) 2008-2009, 2011-2012 Teddy Hogeborn, Bjorn Pahlsson

       This manual page is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published
       by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

       This manual page is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Mandos 1.5.5							    2012-01-01						     ASKPASS-FIFO(8mandos)

Programming