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System Calls - Manual Reference Pages  - GETUID (2)

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getuid, geteuid - get user identity

CONTENTS

Synopsis
Description
Errors
History

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

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

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

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

These functions are always successful.

POSIX.1-2001, 4.3BSD.

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

setreuid(2), setuid(2) or go to Top of page |  Section 2 |  Main Man Index.