Symbol: mac_cred_check_setresgid
sys/kern/kern_prot.c
1601
error = mac_cred_check_setresgid(oldcred, rgid, egid, sgid);
sys/security/mac/mac_framework.h
130
int mac_cred_check_setresgid(struct ucred *cred, gid_t rgid, gid_t egid,