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Re: daemon

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On Tue, Apr 10, 2007 at 11:20:58AM +0530, Srinivas G. wrote:
> 	/* second child continues here */
> 	
> 	/* change the current working directory to root directory */
> 	chdir("/");	
> 	
> 	/* clearing the file mode creation mask to 0 */
> 	umask(0);	
> 

You forgot:

	close(0);
	close(1);
	close(2);

> 	/* undefined file descriptor should be closed */
> 	fileDesc=open("/dev/null",O_RDWR);	/* stdin */
> 	
> 	(void) dup(fileDesc);			/* stdout */
> 	
> 	(void) dup(fileDesc);			/* stderr */

Without the three close()s the above three lines will not work as
expected.


Erik

- -- 
They're all fools. Don't worry. Darwin may be slow, but he'll
eventually get them. -- Matthew Lammers in alt.sysadmin.recovery
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