NAME

setreuid − set real and effective user ID’s

SYNOPSIS

setreuid(ruid, euid)
int ruid, euid;

DESCRIPTION

The real and effective user ID’s of the current process are set according to the arguments.  If ruid or euid is −1, the current uid is filled in by the system.  Unprivileged users may change the real user ID to the effective user ID and vice-versa; only the super-user may make other changes. 

RETURN VALUE

Upon successful completion, a value of 0 is returned.  Otherwise, a value of −1 is returned and errno is set to indicate the error. 

ERRORS

[EPERM] The current process is not the super-user and a change other than changing the effective user-id to the real user-id was specified. 

SEE ALSO

getuid(2), setregid(2), setuid(3)

Sprite version 1.0  —  May 9, 1985