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https://github.com/freebsd/freebsd-src
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inpcb: use family specific sockaddr argument for bind functions
Do the cast from sockaddr to either IPv4 or IPv6 sockaddr in the protocol's pr_bind method and from there on go down the call stack with family specific argument. Reviewed by: zlei, melifaro, markj Differential Revision: https://reviews.freebsd.org/D38601
This commit is contained in:
parent
5dc00f00b7
commit
96871af013
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@ -655,21 +655,21 @@ in_pcballoc(struct socket *so, struct inpcbinfo *pcbinfo)
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#ifdef INET
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int
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in_pcbbind(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
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in_pcbbind(struct inpcb *inp, struct sockaddr_in *sin, struct ucred *cred)
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{
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int anonport, error;
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KASSERT(nam == NULL || nam->sa_family == AF_INET,
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("%s: invalid address family for %p", __func__, nam));
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KASSERT(nam == NULL || nam->sa_len == sizeof(struct sockaddr_in),
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("%s: invalid address length for %p", __func__, nam));
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KASSERT(sin == NULL || sin->sin_family == AF_INET,
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("%s: invalid address family for %p", __func__, sin));
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KASSERT(sin == NULL || sin->sin_len == sizeof(struct sockaddr_in),
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("%s: invalid address length for %p", __func__, sin));
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INP_WLOCK_ASSERT(inp);
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INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
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if (inp->inp_lport != 0 || inp->inp_laddr.s_addr != INADDR_ANY)
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return (EINVAL);
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anonport = nam == NULL || ((struct sockaddr_in *)nam)->sin_port == 0;
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error = in_pcbbind_setup(inp, nam, &inp->inp_laddr.s_addr,
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anonport = sin == NULL || sin->sin_port == 0;
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error = in_pcbbind_setup(inp, sin, &inp->inp_laddr.s_addr,
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&inp->inp_lport, cred);
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if (error)
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return (error);
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@ -901,11 +901,10 @@ in_pcbbind_check_bindmulti(const struct inpcb *ni, const struct inpcb *oi)
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* On error, the values of *laddrp and *lportp are not changed.
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*/
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int
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in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
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in_pcbbind_setup(struct inpcb *inp, struct sockaddr_in *sin, in_addr_t *laddrp,
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u_short *lportp, struct ucred *cred)
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{
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struct socket *so = inp->inp_socket;
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struct sockaddr_in *sin;
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struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
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struct in_addr laddr;
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u_short lport = 0;
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@ -925,15 +924,14 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
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INP_HASH_LOCK_ASSERT(pcbinfo);
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laddr.s_addr = *laddrp;
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if (nam != NULL && laddr.s_addr != INADDR_ANY)
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if (sin != NULL && laddr.s_addr != INADDR_ANY)
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return (EINVAL);
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if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
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lookupflags = INPLOOKUP_WILDCARD;
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if (nam == NULL) {
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if (sin == NULL) {
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if ((error = prison_local_ip4(cred, &laddr)) != 0)
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return (error);
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} else {
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sin = (struct sockaddr_in *)nam;
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KASSERT(sin->sin_family == AF_INET,
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("%s: invalid family for address %p", __func__, sin));
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KASSERT(sin->sin_len == sizeof(*sin),
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@ -739,8 +739,8 @@ int in_pcbbind_check_bindmulti(const struct inpcb *ni,
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void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
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int in_pcballoc(struct socket *, struct inpcbinfo *);
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int in_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *);
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int in_pcbbind_setup(struct inpcb *, struct sockaddr *, in_addr_t *,
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int in_pcbbind(struct inpcb *, struct sockaddr_in *, struct ucred *);
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int in_pcbbind_setup(struct inpcb *, struct sockaddr_in *, in_addr_t *,
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u_short *, struct ucred *);
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int in_pcbconnect(struct inpcb *, struct sockaddr_in *, struct ucred *,
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bool);
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@ -245,7 +245,7 @@ tcp_usr_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
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tp = intotcpcb(inp);
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#endif
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INP_HASH_WLOCK(&V_tcbinfo);
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error = in_pcbbind(inp, nam, td->td_ucred);
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error = in_pcbbind(inp, sinp, td->td_ucred);
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INP_HASH_WUNLOCK(&V_tcbinfo);
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out:
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TCP_PROBE2(debug__user, tp, PRU_BIND);
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@ -309,14 +309,13 @@ tcp6_usr_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
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}
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inp->inp_vflag |= INP_IPV4;
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inp->inp_vflag &= ~INP_IPV6;
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error = in_pcbbind(inp, (struct sockaddr *)&sin,
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td->td_ucred);
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error = in_pcbbind(inp, &sin, td->td_ucred);
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INP_HASH_WUNLOCK(&V_tcbinfo);
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goto out;
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}
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}
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#endif
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error = in6_pcbbind(inp, nam, td->td_ucred);
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error = in6_pcbbind(inp, sin6, td->td_ucred);
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INP_HASH_WUNLOCK(&V_tcbinfo);
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out:
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if (error != 0)
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@ -1206,8 +1206,8 @@ udp_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
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goto release;
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}
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INP_HASH_WLOCK(pcbinfo);
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error = in_pcbbind_setup(inp, (struct sockaddr *)&src,
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&laddr.s_addr, &lport, td->td_ucred);
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error = in_pcbbind_setup(inp, &src, &laddr.s_addr, &lport,
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td->td_ucred);
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INP_HASH_WUNLOCK(pcbinfo);
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if (error)
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goto release;
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@ -1546,7 +1546,7 @@ udp_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
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INP_WLOCK(inp);
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INP_HASH_WLOCK(pcbinfo);
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error = in_pcbbind(inp, nam, td->td_ucred);
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error = in_pcbbind(inp, sinp, td->td_ucred);
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INP_HASH_WUNLOCK(pcbinfo);
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INP_WUNLOCK(inp);
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return (error);
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@ -153,11 +153,9 @@ in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred)
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}
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int
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in6_pcbbind(struct inpcb *inp, struct sockaddr *nam,
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struct ucred *cred)
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in6_pcbbind(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred)
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{
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struct socket *so = inp->inp_socket;
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struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL;
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struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
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u_short lport = 0;
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int error, lookupflags = 0;
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@ -176,12 +174,11 @@ in6_pcbbind(struct inpcb *inp, struct sockaddr *nam,
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return (EINVAL);
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if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
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lookupflags = INPLOOKUP_WILDCARD;
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if (nam == NULL) {
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if (sin6 == NULL) {
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if ((error = prison_local_ip6(cred, &inp->in6p_laddr,
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((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
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return (error);
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} else {
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sin6 = (struct sockaddr_in6 *)nam;
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KASSERT(sin6->sin6_family == AF_INET6,
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("%s: invalid address family for %p", __func__, sin6));
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KASSERT(sin6->sin6_len == sizeof(*sin6),
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@ -73,7 +73,7 @@
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void in6_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
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void in6_losing(struct inpcb *);
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int in6_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *);
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int in6_pcbbind(struct inpcb *, struct sockaddr_in6 *, struct ucred *);
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int in6_pcbconnect(struct inpcb *, struct sockaddr_in6 *, struct ucred *,
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bool);
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void in6_pcbdisconnect(struct inpcb *);
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@ -1020,6 +1020,7 @@ udp6_attach(struct socket *so, int proto, struct thread *td)
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static int
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udp6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
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{
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struct sockaddr_in6 *sin6_p;
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struct inpcb *inp;
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struct inpcbinfo *pcbinfo;
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int error;
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@ -1034,16 +1035,14 @@ udp6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
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if (nam->sa_len != sizeof(struct sockaddr_in6))
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return (EINVAL);
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sin6_p = (struct sockaddr_in6 *)nam;
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INP_WLOCK(inp);
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INP_HASH_WLOCK(pcbinfo);
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vflagsav = inp->inp_vflag;
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inp->inp_vflag &= ~INP_IPV4;
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inp->inp_vflag |= INP_IPV6;
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if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0) {
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struct sockaddr_in6 *sin6_p;
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sin6_p = (struct sockaddr_in6 *)nam;
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if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr))
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inp->inp_vflag |= INP_IPV4;
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#ifdef INET
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in6_sin6_2_sin(&sin, sin6_p);
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inp->inp_vflag |= INP_IPV4;
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inp->inp_vflag &= ~INP_IPV6;
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error = in_pcbbind(inp, (struct sockaddr *)&sin,
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td->td_ucred);
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error = in_pcbbind(inp, &sin, td->td_ucred);
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goto out;
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}
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#endif
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}
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error = in6_pcbbind(inp, nam, td->td_ucred);
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error = in6_pcbbind(inp, sin6_p, td->td_ucred);
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#ifdef INET
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out:
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#endif
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