Sponsored Content
Full Discussion: Daemon process
Top Forums Programming Daemon process Post 12303 by s_chordia on Wednesday 26th of December 2001 05:19:16 AM
Old 12-26-2001
Network Daemon process

Hi,
I have to write a daemon process, which performs certain operations in the background.
Now since it performs operations in the background, it should not display anything to the standard output.
The problem is that it still displays, text on standard output.
Can anyone tell me (it is urgent) how to avoid this.
I have written the following function to initialize the daemon code ...

int
daemon_init()
{
int pid, fd;

if (getppid() == 1)
{
goto out;
}

#ifdef SIGTTOU
signal(SIGTTOU, SIG_IGN);
#endif
#ifdef SIGTTIN
signal(SIGTTIN, SIG_IGN);
#endif
#ifdef SIGTSTP
signal(SIGTSTP, SIG_IGN);
#endif

pid = fork();
if (pid < 0)
{
return -1;
}
else if (pid > 0)
{
/* In parent exit leaving the child to work */
exit(0);
}

if (setpgrp() == -1)
{
return -1;
}
signal(SIGHUP, SIG_IGN);

pid = fork();
if (pid < 0)
{
return -1;
}
else if (pid > 0)
{
/* first child exits */
exit(0);
}

out:
/*for (fd = 3; fd < NOFILE; fd++)
close(fd);*/
/* In child detach from the parents session */
/*setsid();*/
chdir("/");
umask(0);

return 0;
}
 

10 More Discussions You Might Find Interesting

1. Programming

What is a daemon process?

This is gonna seem really silly to almost evryone here - but I need to know : what is a daemon process? Thanks (6 Replies)
Discussion started by: Kanu77
6 Replies

2. UNIX for Advanced & Expert Users

zombie daemon process!!

My daemon process is the child of init and init has the responsibility to remove it, once it turns zombie. But I want to ask why the daemon process which is child of init turns zombie in the first place. What measures I have to take to avoid this? rish (1 Reply)
Discussion started by: rish2005
1 Replies

3. Linux

daemon process

how i will write the daemon process,if any body have sample daemon process send me. (1 Reply)
Discussion started by: suresh_rupineni
1 Replies

4. Shell Programming and Scripting

How to starting process as daemon using ssh command?

Hello, I need to run a command on remote Linux using the ssh command from my local machine. I am able to execute the command on remote machine using ssh but it's behaving strangely. The command is supposed to start a daemon process on remote linux box and the control should return back to me... (5 Replies)
Discussion started by: nitinshukla
5 Replies

5. UNIX for Dummies Questions & Answers

How to write Pro*C daemon process using multithreading?

Hello, I am new to this forum and this is my first post here... I have never worked on either Pro*C or Multithreading..Now, i have to write a Pro*C, Multithreading daemon process.. I dont know where to start.. Can anybody help me with examples? 1. need to write a Pro*C multithreading... (0 Replies)
Discussion started by: kachiraju
0 Replies

6. Programming

How to find if a process a daemon ?

I have a scenario where I need to find if a process is a daemon process or not. This check needs to be done from within the process. I know there are no direct API's to do so. I have explored these options. 1. ctermid() - this can be unsuccessful as per the man pages 2. int devtty; if ((devtty... (7 Replies)
Discussion started by: vino
7 Replies

7. Shell Programming and Scripting

Diff between Bg and daemon process

Dear Unix Gurus, Plz provide major diff between background process and daemon process. Is it control available for daemon process?. (3 Replies)
Discussion started by: kkl
3 Replies

8. UNIX for Advanced & Expert Users

Needs help in launching a console application with the help of daemon process

Hi All, I am facing problem in launching a application with the help of a daemon process. Actually the application is based on command line that reads various commands for controlling the application from the console and accordingly executes those commands. The application always interact with... (3 Replies)
Discussion started by: gopallinux
3 Replies

9. Shell Programming and Scripting

run this script as a daemon process

Hi, HI , I have a simple script that moves files from one folder to another folder, I have already done the open-ssh server settings and the script is working fine and is able to transfer the files from one folder to another but right now I myself execute this script by using my creditianls to... (3 Replies)
Discussion started by: nks342
3 Replies

10. Programming

Daemon process

I wish to make a process run in the background, but only one instance of it, and not many, so when the program is loaded, it has to check whether another instance of the same program is running and if so to exit. How do I do this ? (4 Replies)
Discussion started by: sundaresh
4 Replies
kcfd(1M)						  System Administration Commands						  kcfd(1M)

NAME
kcfd - kernel-level cryptographic framework daemon SYNOPSIS
kcfd DESCRIPTION
The kcfd daemon helps in managing CPU usage by cryptographic operations performed in software by kernel threads. The system utilization associated with these threads is charged to the kcfd process. It also does module verification for kernel cryptographic modules. Only a privileged user can run this daemon. The kcfd daemon is automatically invoked in run level 1, after /usr is mounted. A previously invoked kcfd daemon that is still running must be stopped before invoking another kcfd command. Manually starting and restarting kcfd is not recommended. If it is necessary to do so, use the cryptoadm(1M) start and stop subcommands. EXIT STATUS
The following exit values are returned: 0 Daemon started successfully. > 1 Daemon failed to start. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsl/SUNWcslx | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
cryptoadm(1M), attributes(5) SunOS 5.11 30 Sep 2003 kcfd(1M)

Featured Tech Videos

All times are GMT -4. The time now is 08:41 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy