/**
* Release all connections for unix user xu at server xs
* @param xu
* @param xs
*/
static void
release_conns_user_server(struct unixuser *xu, struct server *xs)
{
int cix, glocked;
struct srvAddr *sa;
struct afs_conn *tc;
struct sa_conn_vector *tcv, **lcv;
for (sa = (xs)->addr; sa; sa = sa->next_sa) {
lcv = &sa->conns;
for (tcv = *lcv; tcv; lcv = &tcv->next, tcv = *lcv) {
if (tcv->user == (xu) && tcv->refCount == 0) {
*lcv = tcv->next;
/* our old friend, the GLOCK */
glocked = ISAFS_GLOCK();
if (glocked)
AFS_GUNLOCK();
for(cix = 0; cix < CVEC_LEN; ++cix) {
tc = &(tcv->cvec[cix]);
if (tc->activated) {
rx_SetConnSecondsUntilNatPing(tc->id, 0);
rx_DestroyConnection(tc->id);
}
}
if (glocked)
AFS_GLOCK();
afs_osi_Free(tcv, sizeof(struct sa_conn_vector));
break; /* at most one instance per server */
} /*Found unreferenced connection for user */
}
} /*For each connection on the server */
} /* release_conns_user_server */
static void
release_conns_vector(struct sa_conn_vector *xcv)
{
int cix, glocked;
struct afs_conn *tc;
struct sa_conn_vector *tcv = NULL;
struct sa_conn_vector **lcv = NULL;
for (tcv = xcv; tcv; lcv = &tcv->next, tcv = *lcv) {
*lcv = tcv->next;
/* you know it, you love it, the GLOCK */
glocked = ISAFS_GLOCK();
if (glocked)
AFS_GUNLOCK(); \
for(cix = 0; cix < CVEC_LEN; ++cix) {
tc = &(tcv->cvec[cix]);
if (tc->activated) {
rx_SetConnSecondsUntilNatPing(tc->id, 0);
rx_DestroyConnection(tc->id);
}
}
if (glocked)
AFS_GLOCK();
afs_osi_Free(tcv, sizeof(struct sa_conn_vector));
}
} /* release_conns_vector */
void
afs_cv_timedwait(afs_kcondvar_t * cv, afs_kmutex_t * l, int waittime)
{
int seq, isAFSGlocked = ISAFS_GLOCK();
long t = waittime * HZ / 1000;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
seq = cv->seq;
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&cv->waitq, &wait);
if (isAFSGlocked)
AFS_GUNLOCK();
MUTEX_EXIT(l);
while(seq == cv->seq) {
t = schedule_timeout(t);
if (!t) /* timeout */
break;
}
remove_wait_queue(&cv->waitq, &wait);
set_current_state(TASK_RUNNING);
if (isAFSGlocked)
AFS_GLOCK();
MUTEX_ENTER(l);
}
int
osi_NetReceive(osi_socket asocket, struct sockaddr_in *addr,
struct iovec *dvec, int nvecs, int *alength)
{
struct uio u;
int i;
struct iovec iov[RX_MAXIOVECS];
struct sockaddr *sa = NULL;
int code;
int haveGlock = ISAFS_GLOCK();
/*AFS_STATCNT(osi_NetReceive); */
if (nvecs > RX_MAXIOVECS)
osi_Panic("osi_NetReceive: %d: Too many iovecs.\n", nvecs);
for (i = 0; i < nvecs; i++)
iov[i] = dvec[i];
u.uio_iov = &iov[0];
u.uio_iovcnt = nvecs;
u.uio_offset = 0;
u.uio_resid = *alength;
u.uio_segflg = UIO_SYSSPACE;
u.uio_rw = UIO_READ;
#ifdef AFS_FBSD50_ENV
u.uio_td = NULL;
#else
u.uio_procp = NULL;
#endif
if (haveGlock)
AFS_GUNLOCK();
code = soreceive(asocket, &sa, &u, NULL, NULL, NULL);
if (haveGlock)
AFS_GLOCK();
if (code) {
#if KNET_DEBUG
if (code == EINVAL)
Debugger("afs NetReceive busted");
else
printf("y");
#else
return code;
#endif
}
*alength -= u.uio_resid;
if (sa) {
if (sa->sa_family == AF_INET) {
if (addr)
*addr = *(struct sockaddr_in *)sa;
} else
printf("Unknown socket family %d in NetReceive\n", sa->sa_family);
FREE(sa, M_SONAME);
}
return code;
}
int
osi_NetSend(osi_socket asocket, struct sockaddr_in *addr, struct iovec *dvec,
int nvecs, afs_int32 alength, int istack)
{
register afs_int32 code;
int i;
struct iovec iov[RX_MAXIOVECS];
struct uio u;
int haveGlock = ISAFS_GLOCK();
AFS_STATCNT(osi_NetSend);
if (nvecs > RX_MAXIOVECS)
osi_Panic("osi_NetSend: %d: Too many iovecs.\n", nvecs);
for (i = 0; i < nvecs; i++)
iov[i] = dvec[i];
u.uio_iov = &iov[0];
u.uio_iovcnt = nvecs;
u.uio_offset = 0;
u.uio_resid = alength;
u.uio_segflg = UIO_SYSSPACE;
u.uio_rw = UIO_WRITE;
#ifdef AFS_FBSD50_ENV
u.uio_td = NULL;
#else
u.uio_procp = NULL;
#endif
addr->sin_len = sizeof(struct sockaddr_in);
if (haveGlock)
AFS_GUNLOCK();
#if KNET_DEBUG
printf("+");
#endif
#ifdef AFS_FBSD50_ENV
code =
sosend(asocket, (struct sockaddr *)addr, &u, NULL, NULL, 0,
curthread);
#else
code =
sosend(asocket, (struct sockaddr *)addr, &u, NULL, NULL, 0, curproc);
#endif
#if KNET_DEBUG
if (code) {
if (code == EINVAL)
Debugger("afs NetSend busted");
else
printf("z");
}
#endif
if (haveGlock)
AFS_GLOCK();
return code;
}
int
osi_NetReceive(osi_socket asocket, struct sockaddr_in *addr,
struct iovec *dvec, int nvecs, int *alength)
{
struct uio u;
int i, code;
struct iovec iov[RX_MAXIOVECS];
struct mbuf *nam = NULL;
int haveGlock = ISAFS_GLOCK();
memset(&u, 0, sizeof(u));
memset(&iov, 0, sizeof(iov));
if (nvecs > RX_MAXIOVECS)
osi_Panic("osi_NetReceive: %d: too many iovecs\n", nvecs);
for (i = 0; i < nvecs; i++)
iov[i] = dvec[i];
u.uio_iov = &iov[0];
u.uio_iovcnt = nvecs;
u.uio_offset = 0;
u.uio_resid = *alength;
u.uio_segflg = UIO_SYSSPACE;
u.uio_rw = UIO_READ;
u.uio_procp = NULL;
if (haveGlock)
AFS_GUNLOCK();
code = soreceive(asocket, (addr ? &nam : NULL), &u, NULL, NULL, NULL
#if defined(AFS_OBSD45_ENV)
, 0
#endif
);
if (haveGlock)
AFS_GLOCK();
if (code) {
#ifdef RXKNET_DEBUG
printf("rx code %d termState %d\n", code, afs_termState);
#endif
while (afs_termState == AFSOP_STOP_RXEVENT)
afs_osi_Sleep(&afs_termState);
return code;
}
*alength -= u.uio_resid;
if (addr && nam) {
memcpy(addr, mtod(nam, caddr_t), nam->m_len);
m_freem(nam);
}
return code;
}
int
osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
{
struct vattr tvattr;
struct vnode *vp;
register afs_int32 code, glocked;
AFS_STATCNT(osi_Truncate);
ObtainWriteLock(&afs_xosi, 321);
vp = afile->vnode;
/*
* This routine only shrinks files, and most systems
* have very slow truncates, even when the file is already
* small enough. Check now and save some time.
*/
glocked = ISAFS_GLOCK();
if (glocked)
AFS_GUNLOCK();
#if defined(AFS_FBSD80_ENV)
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp);
#elif defined(AFS_FBSD50_ENV)
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread);
code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
#else
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curproc);
code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
#endif
if (code != 0 || tvattr.va_size <= asize)
goto out;
VATTR_NULL(&tvattr);
tvattr.va_size = asize;
#if defined(AFS_FBSD80_ENV)
code = VOP_SETATTR(vp, &tvattr, afs_osi_credp);
#elif defined(AFS_FBSD50_ENV)
code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curthread);
#else
code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curproc);
#endif
out:
#if defined(AFS_FBSD80_ENV)
VOP_UNLOCK(vp, 0);
#elif defined(AFS_FBSD50_ENV)
VOP_UNLOCK(vp, LK_EXCLUSIVE, curthread);
#else
VOP_UNLOCK(vp, LK_EXCLUSIVE, curproc);
#endif
if (glocked)
AFS_GLOCK();
ReleaseWriteLock(&afs_xosi);
return code;
}
void
osi_StopListener(void)
{
struct proc *p;
/*
* Have to drop global lock to safely do this.
* soclose() is currently protected by Giant,
* but pfind and psignal are MPSAFE.
*/
int haveGlock = ISAFS_GLOCK();
if (haveGlock)
AFS_GUNLOCK();
soshutdown(rx_socket, 2);
#ifndef AFS_FBSD70_ENV
soclose(rx_socket);
#endif
p = pfind(rxk_ListenerPid);
afs_warn("osi_StopListener: rxk_ListenerPid %lx\n", p);
if (p)
psignal(p, SIGUSR1);
#ifdef AFS_FBSD50_ENV
PROC_UNLOCK(p);
#endif
#ifdef AFS_FBSD70_ENV
{
/* Avoid destroying socket until osi_NetReceive has
* had a chance to clean up */
int tries;
struct mtx s_mtx;
MUTEX_INIT(&s_mtx, "rx_shutdown_mutex", MUTEX_DEFAULT, 0);
MUTEX_ENTER(&s_mtx);
tries = 3;
while ((tries > 0) && (!so_is_disconn(rx_socket))) {
msleep(&osi_StopListener, &s_mtx, PSOCK | PCATCH,
"rx_shutdown_timedwait", 1 * hz);
--tries;
}
if (so_is_disconn(rx_socket))
soclose(rx_socket);
MUTEX_EXIT(&s_mtx);
MUTEX_DESTROY(&s_mtx);
}
#endif
if (haveGlock)
AFS_GLOCK();
}
int
osi_lookupname(char *aname, enum uio_seg seg, int followlink,
struct vnode **vpp)
{
struct nameidata n;
int flags, error, glocked;
#ifdef AFS_FBSD50_ENV
glocked = ISAFS_GLOCK();
if (glocked)
AFS_GUNLOCK();
#endif
flags = 0;
flags = LOCKLEAF;
if (followlink)
flags |= FOLLOW;
else
flags |= NOFOLLOW;
#ifdef AFS_FBSD80_ENV
flags |= MPSAFE; /* namei must take GIANT if needed */
#endif
NDINIT(&n, LOOKUP, flags, seg, aname, curproc);
if ((error = namei(&n)) != 0) {
#ifdef AFS_FBSD50_ENV
if (glocked)
AFS_GLOCK();
#endif
return error;
}
*vpp = n.ni_vp;
/* XXX should we do this? Usually NOT (matt) */
#if defined(AFS_FBSD80_ENV)
/*VOP_UNLOCK(n.ni_vp, 0);*/
#elif defined(AFS_FBSD50_ENV)
VOP_UNLOCK(n.ni_vp, 0, curthread);
#else
VOP_UNLOCK(n.ni_vp, 0, curproc);
#endif
NDFREE(&n, NDF_ONLY_PNBUF);
#ifdef AFS_FBSD50_ENV
if (glocked)
AFS_GLOCK();
#endif
return 0;
}
/*
* Replace all of the bogus special-purpose memory allocators...
*/
void *
osi_fbsd_alloc(size_t size, int dropglobal)
{
void *rv;
int glocked;
if (dropglobal) {
glocked = ISAFS_GLOCK();
if (glocked)
AFS_GUNLOCK();
rv = malloc(size, M_AFS, M_WAITOK);
if (glocked)
AFS_GLOCK();
} else
rv = malloc(size, M_AFS, M_NOWAIT);
return (rv);
}
int
osi_NetSend(osi_socket asocket, struct sockaddr_in *addr, struct iovec *dvec,
int nvecs, afs_int32 alength, int istack)
{
int i, code;
struct iovec iov[RX_MAXIOVECS];
struct uio u;
struct mbuf *nam;
int haveGlock = ISAFS_GLOCK();
memset(&u, 0, sizeof(u));
memset(&iov, 0, sizeof(iov));
AFS_STATCNT(osi_NetSend);
if (nvecs > RX_MAXIOVECS)
osi_Panic("osi_NetSend: %d: Too many iovecs.\n", nvecs);
for (i = 0; i < nvecs; i++)
iov[i] = dvec[i];
u.uio_iov = &iov[0];
u.uio_iovcnt = nvecs;
u.uio_offset = 0;
u.uio_resid = alength;
u.uio_segflg = UIO_SYSSPACE;
u.uio_rw = UIO_WRITE;
u.uio_procp = NULL;
nam = m_get(M_DONTWAIT, MT_SONAME);
if (!nam)
return ENOBUFS;
nam->m_len = addr->sin_len = sizeof(struct sockaddr_in);
memcpy(mtod(nam, caddr_t), addr, addr->sin_len);
if (haveGlock)
AFS_GUNLOCK();
code = sosend(asocket, nam, &u, NULL, NULL, 0);
if (haveGlock)
AFS_GLOCK();
m_freem(nam);
return code;
}
void
put_vfs_context(void)
{
int isglock = ISAFS_GLOCK();
if (!isglock)
AFS_GLOCK();
if (afs_osi_ctxtp_initialized) {
if (!isglock)
AFS_GUNLOCK();
return;
}
if (vfs_context_owner == current_thread())
vfs_context_owner = (thread_t)0;
vfs_context_ref--;
afs_osi_Wakeup(&afs_osi_ctxtp);
if (!isglock)
AFS_GUNLOCK();
}
/*
* Replace all of the bogus special-purpose memory allocators...
*/
void *
osi_fbsd_alloc(size_t size, int dropglobal)
{
void *rv;
#ifdef AFS_FBSD50_ENV
int glocked;
if (dropglobal) {
glocked = ISAFS_GLOCK();
if (glocked)
AFS_GUNLOCK();
rv = malloc(size, M_AFS, M_WAITOK);
if (glocked)
AFS_GLOCK();
} else
#endif
rv = malloc(size, M_AFS, M_NOWAIT);
return (rv);
}
int
osi_lookupname(char *aname, enum uio_seg seg, int followlink,
struct vnode **vpp)
{
struct nameidata n;
int flags, error, glocked;
glocked = ISAFS_GLOCK();
if (glocked)
AFS_GUNLOCK();
#if __FreeBSD_version >= 1000021 /* MPSAFE is gone for good! */
flags = 0;
#else
flags = MPSAFE; /* namei must take Giant if needed */
#endif
if (followlink)
flags |= FOLLOW;
else
flags |= NOFOLLOW;
NDINIT(&n, LOOKUP, flags, seg, aname, curthread);
if ((error = namei(&n)) != 0) {
if (glocked)
AFS_GLOCK();
return error;
}
*vpp = n.ni_vp;
/* XXX should we do this? Usually NOT (matt) */
#if defined(AFS_FBSD80_ENV)
/*VOP_UNLOCK(n.ni_vp, 0);*/
#else
VOP_UNLOCK(n.ni_vp, 0, curthread);
#endif
NDFREE(&n, NDF_ONLY_PNBUF);
if (glocked)
AFS_GLOCK();
return 0;
}
void
get_vfs_context(void)
{
int isglock = ISAFS_GLOCK();
if (!isglock)
AFS_GLOCK();
if (afs_osi_ctxtp_initialized) {
if (!isglock)
AFS_GUNLOCK();
return;
}
osi_Assert(vfs_context_owner != current_thread());
if (afs_osi_ctxtp && current_proc() == vfs_context_curproc) {
vfs_context_ref++;
vfs_context_owner = current_thread();
if (!isglock)
AFS_GUNLOCK();
return;
}
while (afs_osi_ctxtp && vfs_context_ref) {
afs_osi_Sleep(&afs_osi_ctxtp);
if (afs_osi_ctxtp_initialized) {
if (!isglock)
AFS_GUNLOCK();
return;
}
}
vfs_context_rele(afs_osi_ctxtp);
vfs_context_ref=1;
afs_osi_ctxtp = vfs_context_create(NULL);
vfs_context_owner = current_thread();
vfs_context_curproc = current_proc();
if (!isglock)
AFS_GUNLOCK();
}
/**
* Connects to a server by it's server address.
*
* @param sap Server address.
* @param aport Server port.
* @param acell
* @param tu Connect as this user.
* @param force_if_down
* @param create
* @param locktype Specifies type of lock to be used for this function.
*
* @return The new connection.
*/
struct afs_conn *
afs_ConnBySA(struct srvAddr *sap, unsigned short aport, afs_int32 acell,
struct unixuser *tu, int force_if_down, afs_int32 create,
afs_int32 locktype, struct rx_connection **rxconn)
{
int glocked, foundvec;
struct afs_conn *tc = NULL;
struct sa_conn_vector *tcv = NULL;
struct rx_securityClass *csec; /*Security class object */
int isec; /*Security index */
int service;
*rxconn = NULL;
/* find cached connection */
ObtainSharedLock(&afs_xconn, 15);
foundvec = 0;
for (tcv = sap->conns; tcv; tcv = tcv->next) {
if (tcv->user == tu && tcv->port == aport) {
/* return most eligible conn */
if (!foundvec)
foundvec = 1;
UpgradeSToWLock(&afs_xconn, 37);
tc = find_preferred_connection(tcv, create);
ConvertWToSLock(&afs_xconn);
break;
}
}
if (!tc && !create) {
/* Not found and can't create a new one. */
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (AFS_IS_DISCONNECTED && !AFS_IN_SYNC) {
afs_warnuser("afs_ConnBySA: disconnected\n");
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (!foundvec && create) {
/* No such connection vector exists. Create one and splice it in.
* Make sure the server record has been marked as used (for the purposes
* of calculating up & down times, it's now considered to be an
* ``active'' server). Also make sure the server's lastUpdateEvalTime
* gets set, marking the time of its ``birth''.
*/
UpgradeSToWLock(&afs_xconn, 37);
new_conn_vector(tcv);
tcv->user = tu;
tcv->port = aport;
tcv->srvr = sap;
tcv->next = sap->conns;
sap->conns = tcv;
/* all struct afs_conn ptrs come from here */
tc = find_preferred_connection(tcv, create);
afs_ActivateServer(sap);
ConvertWToSLock(&afs_xconn);
} /* end of if (!tcv) */
if (!tc) {
/* Not found and no alternatives. */
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (tu->states & UTokensBad) {
/* we may still have an authenticated RPC connection here,
* we'll have to create a new, unauthenticated, connection.
* Perhaps a better way to do this would be to set
* conn->forceConnectFS on all conns when the token first goes
* bad, but that's somewhat trickier, due to locking
* constraints (though not impossible).
*/
if (tc->id && (rx_SecurityClassOf(tc->id) != 0)) {
tc->forceConnectFS = 1; /* force recreation of connection */
}
tu->states &= ~UHasTokens; /* remove the authentication info */
}
glocked = ISAFS_GLOCK();
if (tc->forceConnectFS) {
UpgradeSToWLock(&afs_xconn, 38);
csec = (struct rx_securityClass *)0;
if (tc->id) {
if (glocked)
AFS_GUNLOCK();
rx_SetConnSecondsUntilNatPing(tc->id, 0);
rx_DestroyConnection(tc->id);
if (glocked)
AFS_GLOCK();
}
/*
* Stupid hack to determine if using vldb service or file system
* service.
*/
if (aport == sap->server->cell->vlport)
service = 52;
else
service = 1;
isec = 0;
csec = afs_pickSecurityObject(tc, &isec);
if (glocked)
AFS_GUNLOCK();
tc->id = rx_NewConnection(sap->sa_ip, aport, service, csec, isec);
if (glocked)
AFS_GLOCK();
if (service == 52) {
rx_SetConnHardDeadTime(tc->id, afs_rx_harddead);
}
/* set to a RX_CALL_TIMEOUT error to allow MTU retry to trigger */
rx_SetServerConnIdleDeadErr(tc->id, RX_CALL_DEAD);
rx_SetConnIdleDeadTime(tc->id, afs_rx_idledead);
/*
* Only do this for the base connection, not per-user.
* Will need to be revisited if/when CB gets security.
*/
if ((isec == 0) && (service != 52) && !(tu->states & UTokensBad) &&
(tu->viceId == UNDEFVID)
#ifndef UKERNEL /* ukernel runs as just one uid anyway */
&& (tu->uid == 0)
#endif
)
rx_SetConnSecondsUntilNatPing(tc->id, 20);
tc->forceConnectFS = 0; /* apparently we're appropriately connected now */
if (csec)
rxs_Release(csec);
ConvertWToSLock(&afs_xconn);
} /* end of if (tc->forceConnectFS)*/
*rxconn = tc->id;
rx_GetConnection(*rxconn);
ReleaseSharedLock(&afs_xconn);
return tc;
}
/* CV_WAIT and CV_TIMEDWAIT sleep until the specified event occurs, or, in the
* case of CV_TIMEDWAIT, until the specified timeout occurs.
* - NOTE: that on Linux, there are circumstances in which TASK_INTERRUPTIBLE
* can wake up, even if all signals are blocked
* - TODO: handle signals correctly by passing an indication back to the
* caller that the wait has been interrupted and the stack should be cleaned
* up preparatory to signal delivery
*/
int
afs_cv_wait(afs_kcondvar_t * cv, afs_kmutex_t * l, int sigok)
{
int seq, isAFSGlocked = ISAFS_GLOCK();
sigset_t saved_set;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
sigemptyset(&saved_set);
seq = cv->seq;
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&cv->waitq, &wait);
if (isAFSGlocked)
AFS_GUNLOCK();
MUTEX_EXIT(l);
if (!sigok) {
SIG_LOCK(current);
saved_set = current->blocked;
sigfillset(¤t->blocked);
RECALC_SIGPENDING(current);
SIG_UNLOCK(current);
}
while(seq == cv->seq) {
schedule();
#ifdef AFS_LINUX26_ENV
#ifdef CONFIG_PM
if (
#ifdef PF_FREEZE
current->flags & PF_FREEZE
#else
#if defined(STRUCT_TASK_STRUCT_HAS_TODO)
!current->todo
#else
#if defined(STRUCT_TASK_STRUCT_HAS_THREAD_INFO)
test_ti_thread_flag(current->thread_info, TIF_FREEZE)
#else
test_ti_thread_flag(task_thread_info(current), TIF_FREEZE)
#endif
#endif
#endif
)
#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
refrigerator(PF_FREEZE);
#else
refrigerator();
#endif
set_current_state(TASK_INTERRUPTIBLE);
#endif
#endif
}
remove_wait_queue(&cv->waitq, &wait);
set_current_state(TASK_RUNNING);
if (!sigok) {
SIG_LOCK(current);
current->blocked = saved_set;
RECALC_SIGPENDING(current);
SIG_UNLOCK(current);
}
if (isAFSGlocked)
AFS_GLOCK();
MUTEX_ENTER(l);
return (sigok && signal_pending(current)) ? EINTR : 0;
}
int
osi_NetReceive(osi_socket so, struct sockaddr_in *addr, struct iovec *dvec,
int nvecs, int *alength)
{
#ifdef AFS_DARWIN80_ENV
socket_t asocket = (socket_t)so;
struct msghdr msg;
struct sockaddr_storage ss;
int rlen;
mbuf_t m;
#else
struct socket *asocket = (struct socket *)so;
struct uio u;
#endif
int i;
struct iovec iov[RX_MAXIOVECS];
struct sockaddr *sa = NULL;
int code;
size_t resid;
int haveGlock = ISAFS_GLOCK();
/*AFS_STATCNT(osi_NetReceive); */
if (nvecs > RX_MAXIOVECS)
osi_Panic("osi_NetReceive: %d: Too many iovecs.\n", nvecs);
for (i = 0; i < nvecs; i++)
iov[i] = dvec[i];
if ((afs_termState == AFSOP_STOP_RXK_LISTENER) ||
(afs_termState == AFSOP_STOP_COMPLETE))
return -1;
if (haveGlock)
AFS_GUNLOCK();
#if defined(KERNEL_FUNNEL)
thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
#endif
#ifdef AFS_DARWIN80_ENV
resid = *alength;
memset(&msg, 0, sizeof(struct msghdr));
msg.msg_name = &ss;
msg.msg_namelen = sizeof(struct sockaddr_storage);
sa =(struct sockaddr *) &ss;
code = sock_receivembuf(asocket, &msg, &m, 0, alength);
if (!code) {
size_t offset=0,sz;
resid = *alength;
for (i=0;i<nvecs && resid;i++) {
sz=MIN(resid, iov[i].iov_len);
code = mbuf_copydata(m, offset, sz, iov[i].iov_base);
if (code)
break;
resid-=sz;
offset+=sz;
}
}
mbuf_freem(m);
#else
u.uio_iov = &iov[0];
u.uio_iovcnt = nvecs;
u.uio_offset = 0;
u.uio_resid = *alength;
u.uio_segflg = UIO_SYSSPACE;
u.uio_rw = UIO_READ;
u.uio_procp = NULL;
code = soreceive(asocket, &sa, &u, NULL, NULL, NULL);
resid = u.uio_resid;
#endif
#if defined(KERNEL_FUNNEL)
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
#endif
if (haveGlock)
AFS_GLOCK();
if (code)
return code;
*alength -= resid;
if (sa) {
if (sa->sa_family == AF_INET) {
if (addr)
*addr = *(struct sockaddr_in *)sa;
} else
printf("Unknown socket family %d in NetReceive\n", sa->sa_family);
#ifndef AFS_DARWIN80_ENV
FREE(sa, M_SONAME);
#endif
}
return code;
}
/* works like PFlushVolumeData */
void
darwin_notify_perms(struct unixuser *auser, int event)
{
int i;
struct afs_q *tq, *uq = NULL;
struct vcache *tvc, *hnext;
int isglock = ISAFS_GLOCK();
struct vnode *vp;
struct vnode_attr va;
int isctxtowner = 0;
if (!afs_darwin_fsevents)
return;
VATTR_INIT(&va);
VATTR_SET(&va, va_mode, 0777);
if (event & UTokensObtained)
VATTR_SET(&va, va_uid, auser->uid);
else
VATTR_SET(&va, va_uid, -2); /* nobody */
if (!isglock)
AFS_GLOCK();
if (!(vfs_context_owner == current_thread())) {
get_vfs_context();
isctxtowner = 1;
}
loop:
ObtainReadLock(&afs_xvcache);
for (i = 0; i < VCSIZE; i++) {
for (tq = afs_vhashTV[i].prev; tq != &afs_vhashTV[i]; tq = uq) {
uq = QPrev(tq);
tvc = QTOVH(tq);
if (tvc->f.states & CDeadVnode) {
/* we can afford to be best-effort */
continue;
}
/* no per-file acls, so only notify on directories */
if (!(vp = AFSTOV(tvc)) || !vnode_isdir(AFSTOV(tvc)))
continue;
/* dynroot object. no callbacks. anonymous ACL. just no. */
if (afs_IsDynrootFid(&tvc->f.fid))
continue;
/* no fake fsevents on mount point sources. leaks refs */
if (tvc->mvstat == 1)
continue;
/* if it's being reclaimed, just pass */
if (vnode_get(vp))
continue;
if (vnode_ref(vp)) {
AFS_GUNLOCK();
vnode_put(vp);
AFS_GLOCK();
continue;
}
ReleaseReadLock(&afs_xvcache);
/* Avoid potentially re-entering on this lock */
if (0 == NBObtainWriteLock(&tvc->lock, 234)) {
tvc->f.states |= CEvent;
AFS_GUNLOCK();
vnode_setattr(vp, &va, afs_osi_ctxtp);
tvc->f.states &= ~CEvent;
vnode_put(vp);
AFS_GLOCK();
ReleaseWriteLock(&tvc->lock);
}
ObtainReadLock(&afs_xvcache);
uq = QPrev(tq);
/* our tvc ptr is still good until now */
AFS_FAST_RELE(tvc);
}
}
ReleaseReadLock(&afs_xvcache);
if (isctxtowner)
put_vfs_context();
if (!isglock)
AFS_GUNLOCK();
}
int
osi_NetSend(osi_socket so, struct sockaddr_in *addr, struct iovec *dvec,
int nvecs, afs_int32 alength, int istack)
{
#ifdef AFS_DARWIN80_ENV
socket_t asocket = (socket_t)so;
struct msghdr msg;
size_t slen;
#else
struct socket *asocket = (struct socket *)so;
struct uio u;
#endif
afs_int32 code;
int i;
struct iovec iov[RX_MAXIOVECS];
int haveGlock = ISAFS_GLOCK();
AFS_STATCNT(osi_NetSend);
if (nvecs > RX_MAXIOVECS)
osi_Panic("osi_NetSend: %d: Too many iovecs.\n", nvecs);
for (i = 0; i < nvecs; i++)
iov[i] = dvec[i];
addr->sin_len = sizeof(struct sockaddr_in);
if ((afs_termState == AFSOP_STOP_RXK_LISTENER) ||
(afs_termState == AFSOP_STOP_COMPLETE))
return -1;
if (haveGlock)
AFS_GUNLOCK();
#if defined(KERNEL_FUNNEL)
thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
#endif
#ifdef AFS_DARWIN80_ENV
memset(&msg, 0, sizeof(struct msghdr));
msg.msg_name = addr;
msg.msg_namelen = ((struct sockaddr *)addr)->sa_len;
msg.msg_iov = &iov[0];
msg.msg_iovlen = nvecs;
code = sock_send(asocket, &msg, 0, &slen);
#else
u.uio_iov = &iov[0];
u.uio_iovcnt = nvecs;
u.uio_offset = 0;
u.uio_resid = alength;
u.uio_segflg = UIO_SYSSPACE;
u.uio_rw = UIO_WRITE;
u.uio_procp = NULL;
code = sosend(asocket, (struct sockaddr *)addr, &u, NULL, NULL, 0);
#endif
#if defined(KERNEL_FUNNEL)
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
#endif
if (haveGlock)
AFS_GLOCK();
return code;
}
/* Flush any buffered data to the stream, switch to read mode
* (clients) or to EOF mode (servers)
*
* LOCKS HELD: called at netpri.
*/
void
rxi_FlushWrite(struct rx_call *call)
{
struct rx_packet *cp = NULL;
/* Free any packets from the last call to ReadvProc/WritevProc */
if (queue_IsNotEmpty(&call->iovq)) {
#ifdef RXDEBUG_PACKET
call->iovqc -=
#endif /* RXDEBUG_PACKET */
rxi_FreePackets(0, &call->iovq);
}
if (call->mode == RX_MODE_SENDING) {
call->mode =
(call->conn->type ==
RX_CLIENT_CONNECTION ? RX_MODE_RECEIVING : RX_MODE_EOF);
#ifdef RX_KERNEL_TRACE
{
int glockOwner = ISAFS_GLOCK();
if (!glockOwner)
AFS_GLOCK();
afs_Trace3(afs_iclSetp, CM_TRACE_WASHERE, ICL_TYPE_STRING,
__FILE__, ICL_TYPE_INT32, __LINE__, ICL_TYPE_POINTER,
call);
if (!glockOwner)
AFS_GUNLOCK();
}
#endif
MUTEX_ENTER(&call->lock);
#ifdef AFS_GLOBAL_RXLOCK_KERNEL
rxi_WaitforTQBusy(call);
#endif /* AFS_GLOBAL_RXLOCK_KERNEL */
if (call->error)
call->mode = RX_MODE_ERROR;
cp = call->currentPacket;
if (cp) {
/* cp->length is only supposed to be the user's data */
/* cp->length was already set to (then-current)
* MaxUserDataSize or less. */
#ifdef RX_TRACK_PACKETS
cp->flags &= ~RX_PKTFLAG_CP;
#endif
cp->length -= call->nFree;
call->currentPacket = (struct rx_packet *)0;
call->nFree = 0;
} else {
cp = rxi_AllocSendPacket(call, 0);
if (!cp) {
/* Mode can no longer be MODE_SENDING */
return;
}
cp->length = 0;
cp->niovecs = 2; /* header + space for rxkad stuff */
call->nFree = 0;
}
/* The 1 specifies that this is the last packet */
hadd32(call->bytesSent, cp->length);
rxi_PrepareSendPacket(call, cp, 1);
#ifdef RX_TRACK_PACKETS
cp->flags |= RX_PKTFLAG_TQ;
#endif
queue_Append(&call->tq, cp);
#ifdef RXDEBUG_PACKET
call->tqc++;
#endif /* RXDEBUG_PACKET */
if (!
(call->
flags & (RX_CALL_FAST_RECOVER | RX_CALL_FAST_RECOVER_WAIT))) {
rxi_Start(0, call, 0, 0);
}
MUTEX_EXIT(&call->lock);
}
}
