NAME

umask − set and get file creation mask

SYNOPSIS

#include <sys/types.h>
#include <sys/stat.h>
mode_t umask (cmask)
mode_t cmask;

DESCRIPTION

umask sets the process’s file mode creation mask to cmask and returns the previous value of the mask.  Only the low-order 9 bits of cmask and the file mode creation mask are used. 

RETURN VALUE

The previous value of the file mode creation mask is returned. 

SEE ALSO

chmod(2), creat(2), mknod(2), open(2). 
mkdir(1), sh(1) in the CX/UX User’s Reference Manual. 

CX/UX Programmer’s Reference Manual