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 calling process. geteuid() returns the effective user ID of the calling process.

ERRORS
These functions are always successful.

CONFORMING TO
POSIX.1-2001, 4.3BSD.

NOTES

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

SEE ALSO
getresuid(2), setreuid(2), setuid(2), credentials(7)

COLOPHON
This page is part of release 3.17 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.