[unix-history] / usr / man / man2 / umask.2

.TH UMASK 2 "12 February 1983"
.UC 4
.SH NAME
umask \- set file creation mode mask
.SH SYNOPSIS
.ft B
oumask = umask(numask)
.br
int oumask, numask;
.ft R
.SH DESCRIPTION
.I Umask
sets the process's file mode creation mask to \fInumask\fP
and returns the previous value of the mask.  The low-order
9 bits of \fInumask\fP are used whenever a file is created,
clearing corresponding bits in the file mode
(see
.IR chmod (2)).
This clearing allows each user to restrict the default access
to his files.
.PP
The value is initially 022 (write access for owner only).
The mask is inherited by child processes.
.SH "RETURN VALUE
The previous value of the file mode mask is returned by the call.
.SH SEE ALSO
chmod(2), mknod(2), open(2)
Commit	Line	Data
3d387ed6 C	1	.TH UMASK 2 "12 February 1983"
	2	.UC 4
	3	.SH NAME
	4	umask \- set file creation mode mask
	5	.SH SYNOPSIS
	6	.ft B
	7	oumask = umask(numask)
	8	.br
	9	int oumask, numask;
	10	.ft R
	11	.SH DESCRIPTION
	12	.I Umask
	13	sets the process's file mode creation mask to \fInumask\fP
	14	and returns the previous value of the mask. The low-order
	15	9 bits of \fInumask\fP are used whenever a file is created,
	16	clearing corresponding bits in the file mode
	17	(see
	18	.IR chmod (2)).
	19	This clearing allows each user to restrict the default access
	20	to his files.
	21	.PP
	22	The value is initially 022 (write access for owner only).
	23	The mask is inherited by child processes.
	24	.SH "RETURN VALUE
	25	The previous value of the file mode mask is returned by the call.
	26	.SH SEE ALSO
	27	chmod(2), mknod(2), open(2)