NAME

setuid, setgid − set user and group ID

SYNOPSIS

setuid(uid)
int uid;

setgid(gid)
int gid;

DESCRIPTION

The user ID (group ID) of the current process is set to the argument.  Both the effective and the real ID are set.  These calls are only permitted to the super-user or if the argument is the real or effective ID. 

SEE ALSO

getuid(2)

DIAGNOSTICS

Zero is returned if the user (group) ID is set; −1 is returned otherwise. 

7th Edition