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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

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 pid, fd;

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

#ifdef SIGTTOU
#ifdef SIGTTIN
#ifdef SIGTSTP

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

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

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

/*for (fd = 3; fd < NOFILE; fd++)
/* In child detach from the parents session */

return 0;

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kcfd(1M)						  System Administration Commands						  kcfd(1M)

kcfd - kernel-level cryptographic framework daemon SYNOPSIS
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)

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