/*
* Audit information about a file, either the file's vnode info, or its
* socket address info.
*/
void
audit_arg_file(struct proc *p, struct file *fp)
{
struct kaudit_record *ar;
struct socket *so;
struct inpcb *pcb;
struct vnode *vp;
int vfslocked;
ar = currecord();
if (ar == NULL)
return;
switch (fp->f_type) {
case DTYPE_VNODE:
case DTYPE_FIFO:
/*
* XXXAUDIT: Only possibly to record as first vnode?
*/
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
audit_arg_vnode1(vp);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
break;
case DTYPE_SOCKET:
so = (struct socket *)fp->f_data;
if (INP_CHECK_SOCKAF(so, PF_INET)) {
SOCK_LOCK(so);
ar->k_ar.ar_arg_sockinfo.so_type =
so->so_type;
ar->k_ar.ar_arg_sockinfo.so_domain =
INP_SOCKAF(so);
ar->k_ar.ar_arg_sockinfo.so_protocol =
so->so_proto->pr_protocol;
SOCK_UNLOCK(so);
pcb = (struct inpcb *)so->so_pcb;
INP_RLOCK(pcb);
ar->k_ar.ar_arg_sockinfo.so_raddr =
pcb->inp_faddr.s_addr;
ar->k_ar.ar_arg_sockinfo.so_laddr =
pcb->inp_laddr.s_addr;
ar->k_ar.ar_arg_sockinfo.so_rport =
pcb->inp_fport;
ar->k_ar.ar_arg_sockinfo.so_lport =
pcb->inp_lport;
INP_RUNLOCK(pcb);
ARG_SET_VALID(ar, ARG_SOCKINFO);
}
break;
default:
/* XXXAUDIT: else? */
break;
}
}
__private_extern__ uint32_t
inpcb_count_opportunistic(unsigned int ifindex, struct inpcbinfo *pcbinfo,
u_int32_t flags)
{
uint32_t opportunistic = 0;
lck_rw_lock_shared(pcbinfo->mtx);
struct inpcb *inp;
inp_gen_t gencnt = pcbinfo->ipi_gencnt;
for (inp = LIST_FIRST(pcbinfo->listhead);
inp; inp = LIST_NEXT(inp, inp_list)) {
if (inp->inp_gencnt <= gencnt &&
inp->inp_state != INPCB_STATE_DEAD &&
inp->inp_socket != NULL &&
so_get_opportunistic(inp->inp_socket) &&
inp->inp_last_outifp != NULL &&
ifindex == inp->inp_last_outifp->if_index) {
opportunistic++;
struct socket *so = inp->inp_socket;
if ((flags & INPCB_OPPORTUNISTIC_SETCMD) &&
(so->so_state & SS_ISCONNECTED)) {
socket_lock(so, 1);
if (flags & INPCB_OPPORTUNISTIC_THROTTLEON) {
so->so_flags |= SOF_SUSPENDED;
soevent(so,
(SO_FILT_HINT_LOCKED |
SO_FILT_HINT_SUSPEND));
} else {
so->so_flags &= ~(SOF_SUSPENDED);
soevent(so,
(SO_FILT_HINT_LOCKED |
SO_FILT_HINT_RESUME));
}
SOTHROTTLELOG(("throttle[%d]: so %p [%d,%d] "
"%s\n", so->last_pid, so, INP_SOCKAF(so),
INP_SOCKTYPE(so),
(so->so_flags & SOF_SUSPENDED) ?
"SUSPENDED" : "RESUMED"));
socket_unlock(so, 1);
}
}
}
lck_rw_done(pcbinfo->mtx);
return (opportunistic);
}
int
in6_pcbbind(
struct inpcb *inp,
struct sockaddr *nam,
struct proc *p)
{
struct socket *so = inp->inp_socket;
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL;
struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
u_short lport = 0;
int wild = 0, reuseport = (so->so_options & SO_REUSEPORT);
if (!in6_ifaddrs) /* XXX broken! */
return (EADDRNOTAVAIL);
if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
return(EINVAL);
if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
wild = 1;
socket_unlock(so, 0); /* keep reference */
lck_rw_lock_exclusive(pcbinfo->mtx);
if (nam) {
sin6 = (struct sockaddr_in6 *)nam;
if (nam->sa_len != sizeof(*sin6)) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EINVAL);
}
/*
* family check.
*/
if (nam->sa_family != AF_INET6) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EAFNOSUPPORT);
}
/* KAME hack: embed scopeid */
if (in6_embedscope(&sin6->sin6_addr, sin6, inp, NULL) != 0) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return EINVAL;
}
/* this must be cleared for ifa_ifwithaddr() */
sin6->sin6_scope_id = 0;
lport = sin6->sin6_port;
if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
/*
* Treat SO_REUSEADDR as SO_REUSEPORT for multicast;
* allow compepte duplication of binding if
* SO_REUSEPORT is set, or if SO_REUSEADDR is set
* and a multicast address is bound on both
* new and duplicated sockets.
*/
if (so->so_options & SO_REUSEADDR)
reuseport = SO_REUSEADDR|SO_REUSEPORT;
} else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
struct ifaddr *ia = NULL;
sin6->sin6_port = 0; /* yech... */
if ((ia = ifa_ifwithaddr((struct sockaddr *)sin6)) == 0) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EADDRNOTAVAIL);
}
/*
* XXX: bind to an anycast address might accidentally
* cause sending a packet with anycast source address.
* We should allow to bind to a deprecated address, since
* the application dare to use it.
*/
if (ia &&
((struct in6_ifaddr *)ia)->ia6_flags &
(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) {
ifafree(ia);
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EADDRNOTAVAIL);
}
ifafree(ia);
ia = NULL;
}
if (lport) {
struct inpcb *t;
/* GROSS */
if (ntohs(lport) < IPV6PORT_RESERVED && p &&
((so->so_state & SS_PRIV) == 0)) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EACCES);
}
if (so->so_uid &&
!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
t = in6_pcblookup_local_and_cleanup(pcbinfo,
&sin6->sin6_addr, lport,
INPLOOKUP_WILDCARD);
if (t &&
(!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
!IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) ||
(t->inp_socket->so_options &
SO_REUSEPORT) == 0) &&
(so->so_uid != t->inp_socket->so_uid) &&
((t->inp_socket->so_flags & SOF_REUSESHAREUID) == 0)) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return (EADDRINUSE);
}
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
struct sockaddr_in sin;
in6_sin6_2_sin(&sin, sin6);
t = in_pcblookup_local_and_cleanup(pcbinfo,
sin.sin_addr, lport,
INPLOOKUP_WILDCARD);
if (t && (t->inp_socket->so_options & SO_REUSEPORT) == 0 &&
(so->so_uid !=
t->inp_socket->so_uid) &&
(ntohl(t->inp_laddr.s_addr) !=
INADDR_ANY ||
INP_SOCKAF(so) ==
INP_SOCKAF(t->inp_socket))) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return (EADDRINUSE);
}
}
}
t = in6_pcblookup_local_and_cleanup(pcbinfo, &sin6->sin6_addr,
lport, wild);
if (t && (reuseport & t->inp_socket->so_options) == 0) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EADDRINUSE);
}
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
struct sockaddr_in sin;
in6_sin6_2_sin(&sin, sin6);
t = in_pcblookup_local_and_cleanup(pcbinfo, sin.sin_addr,
lport, wild);
if (t &&
(reuseport & t->inp_socket->so_options)
== 0 &&
(ntohl(t->inp_laddr.s_addr)
!= INADDR_ANY ||
INP_SOCKAF(so) ==
INP_SOCKAF(t->inp_socket))) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return (EADDRINUSE);
}
}
}
inp->in6p_laddr = sin6->sin6_addr;
}
socket_lock(so, 0);
if (lport == 0) {
int e;
if ((e = in6_pcbsetport(&inp->in6p_laddr, inp, p, 1)) != 0) {
lck_rw_done(pcbinfo->mtx);
return(e);
}
}
else {
inp->inp_lport = lport;
if (in_pcbinshash(inp, 1) != 0) {
inp->in6p_laddr = in6addr_any;
inp->inp_lport = 0;
lck_rw_done(pcbinfo->mtx);
return (EAGAIN);
}
}
lck_rw_done(pcbinfo->mtx);
sflt_notify(so, sock_evt_bound, NULL);
return(0);
}