/*
- * Copyright (c) 2003-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2003-2011 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <sys/filio.h>
#include <sys/uio_internal.h>
#include <kern/lock.h>
+#include <netinet/in.h>
+#include <libkern/OSAtomic.h>
extern int soclose_locked(struct socket *so);
extern void soclose_wait_locked(struct socket *so);
+extern int so_isdstlocal(struct socket *so);
errno_t sock_send_internal(
socket_t sock,
if (sa) FREE(sa, M_SONAME);
/*
- * If the socket has been marked as inactive by soacceptfilter(),
- * disallow further operations on it. We explicitly call shutdown
- * on both data directions to ensure that SS_CANT{RCV,SEND}MORE
- * states are set for the socket. This would also flush out data
- * hanging off the receive list of this socket.
+ * If the socket has been marked as inactive by sosetdefunct(),
+ * disallow further operations on it.
*/
if (new_so->so_flags & SOF_DEFUNCT) {
- (void) soshutdownlock(new_so, SHUT_RD);
- (void) soshutdownlock(new_so, SHUT_WR);
- (void) sodisconnectlocked(new_so);
+ (void) sodefunct(current_proc(), new_so,
+ SHUTDOWN_SOCKET_LEVEL_DISCONNECT_INTERNAL);
}
-
*new_sock = new_so;
if (dosocklock)
socket_unlock(new_so, 1);
socket_t sock,
const struct sockaddr *to)
{
- if (sock == NULL || to == NULL) return EINVAL;
+ int error = 0;
+ struct sockaddr *sa = NULL;
+ struct sockaddr_storage ss;
+ boolean_t want_free = TRUE;
+
+ if (sock == NULL || to == NULL)
+ return EINVAL;
+
+ if (to->sa_len > sizeof(ss)) {
+ MALLOC(sa, struct sockaddr *, to->sa_len, M_SONAME, M_WAITOK);
+ if (sa == NULL)
+ return ENOBUFS;
+ } else {
+ sa = (struct sockaddr *)&ss;
+ want_free = FALSE;
+ }
+ memcpy(sa, to, to->sa_len);
+
+ error = sobind(sock, sa);
- return sobind(sock, (struct sockaddr*)to);
+ if (sa != NULL && want_free == TRUE)
+ FREE(sa, M_SONAME);
+
+ return error;
}
errno_t
{
int error = 0;
lck_mtx_t *mutex_held;
+ struct sockaddr *sa = NULL;
+ struct sockaddr_storage ss;
+ boolean_t want_free = TRUE;
if (sock == NULL || to == NULL) return EINVAL;
+
+ if (to->sa_len > sizeof(ss)) {
+ MALLOC(sa, struct sockaddr *, to->sa_len, M_SONAME,
+ (flags & MSG_DONTWAIT) ? M_NOWAIT : M_WAITOK);
+ if (sa == NULL)
+ return ENOBUFS;
+ } else {
+ sa = (struct sockaddr *)&ss;
+ want_free = FALSE;
+ }
+ memcpy(sa, to, to->sa_len);
socket_lock(sock, 1);
if ((sock->so_state & SS_ISCONNECTING) &&
((sock->so_state & SS_NBIO) != 0 ||
(flags & MSG_DONTWAIT) != 0)) {
- socket_unlock(sock, 1);
- return EALREADY;
+ error = EALREADY;
+ goto out;
}
- error = soconnectlock(sock, (struct sockaddr*)to, 0);
+ error = soconnectlock(sock, sa, 0);
if (!error) {
if ((sock->so_state & SS_ISCONNECTING) &&
((sock->so_state & SS_NBIO) != 0 || (flags & MSG_DONTWAIT) != 0)) {
- socket_unlock(sock, 1);
- return EINPROGRESS;
+ error = EINPROGRESS;
+ goto out;
}
if (sock->so_proto->pr_getlock != NULL)
else {
sock->so_state &= ~SS_ISCONNECTING;
}
+out:
socket_unlock(sock, 1);
+
+ if (sa != NULL && want_free == TRUE)
+ FREE(sa, M_SONAME);
+
return error;
}
socket_unlock(sock, 1);
return (ENOTCONN);
}
- error = sock_getaddr(sock, &sa, 1);
+ error = sogetaddr_locked(sock, &sa, 1);
socket_unlock(sock, 1);
if (error == 0) {
if (peernamelen > sa->sa_len)
return (EINVAL);
socket_lock(sock, 1);
- error = sock_getaddr(sock, &sa, 0);
+ error = sogetaddr_locked(sock, &sa, 0);
socket_unlock(sock, 1);
if (error == 0) {
if (socknamelen > sa->sa_len)
return (error);
}
-errno_t
-sock_getaddr(socket_t sock, struct sockaddr **psa, int peer)
+__private_extern__ int
+sogetaddr_locked(struct socket *so, struct sockaddr **psa, int peer)
{
int error;
- if (sock == NULL || psa == NULL)
+ if (so == NULL || psa == NULL)
return (EINVAL);
*psa = NULL;
- error = peer ? sock->so_proto->pr_usrreqs->pru_peeraddr(sock, psa) :
- sock->so_proto->pr_usrreqs->pru_sockaddr(sock, psa);
+ error = peer ? so->so_proto->pr_usrreqs->pru_peeraddr(so, psa) :
+ so->so_proto->pr_usrreqs->pru_sockaddr(so, psa);
if (error == 0 && *psa == NULL) {
error = ENOMEM;
return (error);
}
+errno_t
+sock_getaddr(socket_t sock, struct sockaddr **psa, int peer)
+{
+ int error;
+
+ if (sock == NULL || psa == NULL)
+ return (EINVAL);
+
+ socket_lock(sock, 1);
+ error = sogetaddr_locked(sock, psa, peer);
+ socket_unlock(sock, 1);
+
+ return (error);
+}
+
void
sock_freeaddr(struct sockaddr *sa)
{
sopt.sopt_name = optname;
sopt.sopt_val = CAST_USER_ADDR_T(optval);
sopt.sopt_valsize = *optlen;
- sopt.sopt_p = NULL;
+ sopt.sopt_p = kernproc;
error = sogetopt(sock, &sopt); /* will lock socket */
if (error == 0) *optlen = sopt.sopt_valsize;
return error;
unsigned long request,
void *argp)
{
- return soioctl(sock, request, argp, NULL); /* will lock socket */
+ return soioctl(sock, request, argp, kernproc); /* will lock socket */
}
errno_t
sopt.sopt_name = optname;
sopt.sopt_val = CAST_USER_ADDR_T(optval);
sopt.sopt_valsize = optlen;
- sopt.sopt_p = NULL;
+ sopt.sopt_p = kernproc;
return sosetopt(sock, &sopt); /* will lock socket */
}
+/*
+ * This follows the recommended mappings between DSCP code points and WMM access classes
+ */
+static u_int32_t so_tc_from_dscp(u_int8_t dscp);
+static u_int32_t
+so_tc_from_dscp(u_int8_t dscp)
+{
+ u_int32_t tc;
+
+ if (dscp >= 0x30 && dscp <= 0x3f)
+ tc = SO_TC_VO;
+ else if (dscp >= 0x20 && dscp <= 0x2f)
+ tc = SO_TC_VI;
+ else if (dscp >= 0x08 && dscp <= 0x17)
+ tc = SO_TC_BK;
+ else
+ tc = SO_TC_BE;
+
+ return (tc);
+}
+
+errno_t
+sock_settclassopt(
+ socket_t sock,
+ const void *optval,
+ size_t optlen) {
+
+ errno_t error = 0;
+ struct sockopt sopt;
+ int sotc;
+
+ if (sock == NULL || optval == NULL || optlen != sizeof(int)) return EINVAL;
+
+ socket_lock(sock, 1);
+ if (!(sock->so_state & SS_ISCONNECTED)) {
+ /* If the socket is not connected then we don't know
+ * if the destination is on LAN or not. Skip
+ * setting traffic class in this case
+ */
+ error = ENOTCONN;
+ goto out;
+ }
+
+ if (sock->so_proto == NULL || sock->so_proto->pr_domain == NULL || sock->so_pcb == NULL) {
+ error = EINVAL;
+ goto out;
+ }
+
+ /*
+ * Set the socket traffic class based on the passed DSCP code point
+ * regardless of the scope of the destination
+ */
+ sotc = so_tc_from_dscp((*(const int *)optval) >> 2);
+
+ sopt.sopt_dir = SOPT_SET;
+ sopt.sopt_val = CAST_USER_ADDR_T(&sotc);
+ sopt.sopt_valsize = sizeof(sotc);
+ sopt.sopt_p = kernproc;
+ sopt.sopt_level = SOL_SOCKET;
+ sopt.sopt_name = SO_TRAFFIC_CLASS;
+
+ socket_unlock(sock, 0);
+ error = sosetopt(sock, &sopt);
+ socket_lock(sock, 0);
+
+ if (error != 0) {
+ printf("sock_settclassopt: sosetopt SO_TRAFFIC_CLASS failed %d\n", error);
+ goto out;
+ }
+
+ /* Check if the destination address is LAN or link local address.
+ * We do not want to set traffic class bits if the destination
+ * is not local
+ */
+ if (!so_isdstlocal(sock)) {
+ goto out;
+ }
+
+ sopt.sopt_dir = SOPT_SET;
+ sopt.sopt_val = CAST_USER_ADDR_T(optval);
+ sopt.sopt_valsize = optlen;
+ sopt.sopt_p = kernproc;
+
+ switch (sock->so_proto->pr_domain->dom_family) {
+ case AF_INET:
+ sopt.sopt_level = IPPROTO_IP;
+ sopt.sopt_name = IP_TOS;
+ break;
+ case AF_INET6:
+ sopt.sopt_level = IPPROTO_IPV6;
+ sopt.sopt_name = IPV6_TCLASS;
+ break;
+ default:
+ error = EINVAL;
+ goto out;
+ }
+
+ socket_unlock(sock, 1);
+ return sosetopt(sock, &sopt);
+out:
+ socket_unlock(sock, 1);
+ return error;
+}
+
+errno_t
+sock_gettclassopt(
+ socket_t sock,
+ void *optval,
+ size_t *optlen) {
+
+ errno_t error = 0;
+ struct sockopt sopt;
+
+ if (sock == NULL || optval == NULL || optlen == NULL) return EINVAL;
+
+ sopt.sopt_dir = SOPT_GET;
+ sopt.sopt_val = CAST_USER_ADDR_T(optval);
+ sopt.sopt_valsize = *optlen;
+ sopt.sopt_p = kernproc;
+
+ socket_lock(sock, 1);
+ if (sock->so_proto == NULL || sock->so_proto->pr_domain == NULL) {
+ socket_unlock(sock, 1);
+ return EINVAL;
+ }
+
+ switch (sock->so_proto->pr_domain->dom_family) {
+ case AF_INET:
+ sopt.sopt_level = IPPROTO_IP;
+ sopt.sopt_name = IP_TOS;
+ break;
+ case AF_INET6:
+ sopt.sopt_level = IPPROTO_IPV6;
+ sopt.sopt_name = IPV6_TCLASS;
+ break;
+ default:
+ socket_unlock(sock, 1);
+ return EINVAL;
+
+ }
+ socket_unlock(sock, 1);
+ error = sogetopt(sock, &sopt); /* will lock socket */
+ if (error == 0) *optlen = sopt.sopt_valsize;
+ return error;
+}
+
errno_t
sock_listen(
socket_t sock,
&uio_buf[0], sizeof(uio_buf));
if (msg && data == NULL) {
int i;
- struct iovec_32 *tempp = (struct iovec_32 *) msg->msg_iov;
+ struct iovec *tempp = msg->msg_iov;
for (i = 0; i < msg->msg_iovlen; i++) {
uio_addiov(auio, CAST_USER_ADDR_T((tempp + i)->iov_base), (tempp + i)->iov_len);
if (recvdlen)
*recvdlen = 0;
-
- if (msg && msg->msg_control) {
- if ((size_t)msg->msg_controllen < sizeof(struct cmsghdr)) return EINVAL;
- if ((size_t)msg->msg_controllen > MLEN) return EINVAL;
- control = m_get(M_NOWAIT, MT_CONTROL);
- if (control == NULL) return ENOMEM;
- memcpy(mtod(control, caddr_t), msg->msg_control, msg->msg_controllen);
- control->m_len = msg->msg_controllen;
- }
/* let pru_soreceive handle the socket locking */
error = sock->so_proto->pr_usrreqs->pru_soreceive(sock, &fromsa, auio,
- data, control ? &control : NULL, &flags);
+ data, (msg && msg->msg_control) ? &control : NULL, &flags);
if (error) goto cleanup;
if (recvdlen)
clen -= tocopy;
m = m->m_next;
}
- msg->msg_controllen = (u_int32_t)ctlbuf - (u_int32_t)msg->msg_control;
+ msg->msg_controllen = (uintptr_t)ctlbuf - (uintptr_t)msg->msg_control;
}
}
}
if (data == 0 && msg != NULL) {
- struct iovec_32 *tempp = (struct iovec_32 *) msg->msg_iov;
+ struct iovec *tempp = msg->msg_iov;
auio = uio_createwithbuffer(msg->msg_iovlen, 0, UIO_SYSSPACE, UIO_WRITE,
&uio_buf[0], sizeof(uio_buf));
#endif
(*new_so)->so_upcall = (so_upcall)callback;
(*new_so)->so_upcallarg = context;
+ (*new_so)->last_pid = 0;
+ (*new_so)->last_upid = 0;
}
return error;
}
return;
socket_lock(sock, 1);
- if (sock->so_flags & SOF_UPCALLINUSE)
+ if (sock->so_upcallusecount)
soclose_wait_locked(sock);
sock->so_retaincnt--;
{
return (sock->so_head);
}
+
+static inline void
+sock_set_tcp_stream_priority(socket_t sock)
+{
+ if ((sock->so_proto->pr_domain->dom_family == AF_INET ||
+ sock->so_proto->pr_domain->dom_family == AF_INET6) &&
+ sock->so_proto->pr_type == SOCK_STREAM) {
+
+ set_tcp_stream_priority(sock);
+
+ }
+}
+
+/*
+ * Caller must have ensured socket is valid and won't be going away.
+ */
+void
+socket_set_traffic_mgt_flags_locked(socket_t sock, u_int32_t flags)
+{
+ (void) OSBitOrAtomic(flags, &sock->so_traffic_mgt_flags);
+ sock_set_tcp_stream_priority(sock);
+}
+
+void
+socket_set_traffic_mgt_flags(socket_t sock, u_int32_t flags)
+{
+ socket_lock(sock, 1);
+ socket_set_traffic_mgt_flags_locked(sock, flags);
+ socket_unlock(sock, 1);
+}
+
+/*
+ * Caller must have ensured socket is valid and won't be going away.
+ */
+void
+socket_clear_traffic_mgt_flags_locked(socket_t sock, u_int32_t flags)
+{
+ (void) OSBitAndAtomic(~flags, &sock->so_traffic_mgt_flags);
+ sock_set_tcp_stream_priority(sock);
+}
+
+void
+socket_clear_traffic_mgt_flags(socket_t sock, u_int32_t flags)
+{
+ socket_lock(sock, 1);
+ socket_clear_traffic_mgt_flags_locked(sock, flags);
+ socket_unlock(sock, 1);
+}
+
+
+/*
+ * Caller must have ensured socket is valid and won't be going away.
+ */
+errno_t
+socket_defunct(struct proc *p, socket_t so, int level)
+{
+ errno_t retval;
+
+ if (level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_SVC &&
+ level != SHUTDOWN_SOCKET_LEVEL_DISCONNECT_ALL)
+ return (EINVAL);
+
+ socket_lock(so, 1);
+ /*
+ * SHUTDOWN_SOCKET_LEVEL_DISCONNECT_SVC level is meant to tear down
+ * all of mDNSResponder IPC sockets, currently those of AF_UNIX; note
+ * that this is an implementation artifact of mDNSResponder. We do
+ * a quick test against the socket buffers for SB_UNIX, since that
+ * would have been set by unp_attach() at socket creation time.
+ */
+ if (level == SHUTDOWN_SOCKET_LEVEL_DISCONNECT_SVC &&
+ (so->so_rcv.sb_flags & so->so_snd.sb_flags & SB_UNIX) != SB_UNIX) {
+ socket_unlock(so, 1);
+ return (EOPNOTSUPP);
+ }
+ retval = sosetdefunct(p, so, level, TRUE);
+ if (retval == 0)
+ retval = sodefunct(p, so, level);
+ socket_unlock(so, 1);
+ return (retval);
+}
+
+errno_t
+sock_setupcall(socket_t sock, sock_upcall callback, void* context)
+{
+ if (sock == NULL)
+ return EINVAL;
+
+ /*
+ * Note that we don't wait for any in progress upcall to complete.
+ */
+ socket_lock(sock, 1);
+
+ sock->so_upcall = (so_upcall) callback;
+ sock->so_upcallarg = context;
+ if (callback) {
+ sock->so_rcv.sb_flags |= SB_UPCALL;
+#if CONFIG_SOWUPCALL
+ sock->so_snd.sb_flags |= SB_UPCALL;
+#endif /* CONFIG_SOWUPCALL */
+ } else {
+ sock->so_rcv.sb_flags &= ~SB_UPCALL;
+#if CONFIG_SOWUPCALL
+ sock->so_snd.sb_flags &= ~SB_UPCALL;
+#endif /* CONFIG_SOWUPCALL */
+ }
+
+ socket_unlock(sock, 1);
+
+ return 0;
+}
+
projects / apple / xnu.git / blobdiff