The Open Group Base Specifications Issue 7
IEEE Std 1003.1, 2013 Edition
Copyright © 2001-2013 The IEEE and The Open Group

NAME

geteuid - get the effective user ID

SYNOPSIS

#include <unistd.h>

uid_t geteuid(void);

DESCRIPTION

The geteuid() function shall return the effective user ID of the calling process.

RETURN VALUE

The geteuid() function shall always be successful and no return value is reserved to indicate an error.

ERRORS

No errors are defined.


The following sections are informative.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

getegid, getgid, getuid, setegid, seteuid, setgid, setregid, setreuid, setuid

XBD <sys/types.h>, <unistd.h>

CHANGE HISTORY

First released in Issue 1. Derived from Issue 1 of the SVID.

Issue 6

In the SYNOPSIS, the optional include of the <sys/types.h> header is removed.

The following new requirements on POSIX implementations derive from alignment with the Single UNIX Specification:

End of informative text.

 

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