NAME

umask − set and get file creation mask

SYNOPSIS

#include <sys/types.h>
#include <sys/stat.h>

mode_t umask(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 access permission bits of cmask and the file mode creation mask are used. 

SEE ALSO

mkdir(1), sh(1), chmod(2), creat(2), mknod(2), open(2), stat(5). 

DIAGNOSTICS

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