Function change_ruid

freebsd/kern/kern_prot.c:2438–2448

- * Change a process's real uid. * Side effects: newcred->cr_ruid will be updated, newcred->cr_ruidinfo * will be updated, and the old and new cr_ruidinfo proc * counts will be updated. * References: newcred must be an exclusive credential reference for the * duration of the call. */

 *             duration of the call.
 */
void
change_ruid(struct ucred *newcred, struct uidinfo *ruip)
{

	(void)chgproccnt(newcred->cr_ruidinfo, -1, 0);
	newcred->cr_ruid = ruip->ui_uid;
	uihold(ruip);
	uifree(newcred->cr_ruidinfo);
	newcred->cr_ruidinfo = ruip;
	(void)chgproccnt(newcred->cr_ruidinfo, 1, 0);
}

/*-
 * Change a process's real gid.