Originální popis anglicky:
getumask - get file creation mask
Návod, kniha: Linux Programmer's Manual
#include <sys/types.h>
#include <sys/stat.h>
mode_t getumask(void);
This function returns the current file creation mask. It is equivalent to
mode_t getumask(void) {
mode_t mask = umask(0);
umask(mask);
return mask;
}
except that it is documented to be thread-safe (that is, shares a lock with the
umask() library call).
This function is documented but not implemented yet in glibc 2.2.5.
This is a vapourware GNU extension.
umask(2)
