Xref: utzoo comp.unix.questions:28860 comp.unix.ultrix:6292
Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uunet!bria!mike
Newsgroups: comp.unix.questions,comp.unix.ultrix
Subject: Re: Pre-set file permissions
Message-ID: <467@bria>
Date: 18 Feb 91 17:36:49 GMT
References: <509@anselm.UUCP>
Reply-To: uunet!bria!mike
Followup-To: comp.unix.questions
Organization: MGI Group International, Los Angeles, CA
Lines: 28

In an article, anselm.UUCP!ebertran (Erik S. Bertrand) writes:
>I would like to know if there is such a way to preset (say, in a .login file)
>file permissions so that each time a file is saved, it's permissions will be
>those of the preset ones.  Thank you in advance for your reply.

Set the umask to the permission bits that you want turned _off_ when a
file is created; a common umask is 022.  To set the umask, simply use
the umask(1) command, such as ``umask 022''.

Whenever you create a file, the creat() call gets your file creation
mask from your U area, and does something like this:

	creat(path,mode)
	char *path;
	int mode;
	{
	struct user	*u;
		...
		mode &= ~(u->u_cmask);
		...
	}

Cheers,
-- 
Michael Stefanik, MGI Inc., Los Angeles| Opinions stated are not even my own.
Title of the week: Systems Engineer    | UUCP: ...!uunet!bria!mike
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