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Diffstat (limited to 'man2/umask.2')
| -rw-r--r-- | man2/umask.2 | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/man2/umask.2 b/man2/umask.2 new file mode 100644 index 000000000..a01f18a3b --- /dev/null +++ b/man2/umask.2 @@ -0,0 +1,61 @@ +.\" Hey Emacs! This file is -*- nroff -*- source. +.\" +.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992 +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" Modified by Michael Haardt <michael@moria.de> +.\" Modified Sat Jul 24 12:51:53 1993 by Rik Faith <faith@cs.unc.edu> +.\" Modified Tue Oct 22 22:39:04 1996 by Eric S. Raymond <esr@thyrsus.com> +.\" Modified Thu May 1 06:05:54 UTC 1997 by Nicolás Lichtmaier +.\" <nick@debian.com> with Lars Wirzenius <liw@iki.fi> suggestion +.TH UMASK 2 1998-08-09 "Linux" "Linux Programmer's Manual" +.SH NAME +umask \- set file creation mask +.SH SYNOPSIS +.B #include <sys/types.h> +.br +.B #include <sys/stat.h> +.sp +.BI "mode_t umask(mode_t " mask ); +.SH DESCRIPTION +.B umask +sets the umask to +.I mask +& 0777. + +The umask is used by +.BR open (2) +to set initial file permissions on a newly-created file. +Specifically, permissions in the umask are turned off from +the \fBmode\fR argument to +.BR open (2) +(so, for example, the common umask default value of 022 results in new +files being created with permissions 0666 & ~022 = 0644 = rw-r--r-- +in the usual case where the \fBmode\fR is specified as 0666). +.SH "RETURN VALUE" +This system call always succeeds and the previous value of the mask +is returned. +.SH "CONFORMING TO" +SVr4, SVID, POSIX, X/OPEN, BSD 4.3 +.SH "SEE ALSO" +.BR creat (2), +.BR open (2) |