GETUID(2)

NAME
getuid, geteuid - get user identity

SYNOPSIS
#include <unistd.h>
#include <sys/types.h>

uid_t getuid(void);
uid_t geteuid(void);

DESCRIPTION
getuid() returns the real user ID of the current process. geteuid() returns the effective user ID of the current process.

ERRORS
These functions are always successful.

CONFORMING TO
POSIX.1-2001, 4.3BSD.

HISTORY
In Unix V6 the getuid() call returned (euid << 8) + uid. Unix V7 introduced separate calls getuid() and geteuid().

SEE ALSO
setreuid(2), setuid(2)