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OpenSolaris 2009.06 - man page for umask (opensolaris section 2)

umask(2)							   System Calls 							  umask(2)

NAME
umask - set and get file creation mask
SYNOPSIS
#include <sys/types.h> #include <sys/stat.h> mode_t umask(mode_t cmask);
DESCRIPTION
The umask() function sets the process's file mode creation mask to cmask and returns the previous value of the mask. Only the access per- mission bits of cmask and the file mode creation mask are used. The mask is inherited by child processes. See Intro(2) for more information on masks.
RETURN VALUES
The previous value of the file mode creation mask is returned.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+
SEE ALSO
mkdir(1), sh(1), Intro(2), chmod(2), creat(2), mknod(2), open(2), stat.h(3HEAD), attributes(5), standards(5) SunOS 5.11 28 Dec 1996 umask(2)