e51fe8759d
goto and abstracted by the itry, ithrow and icatch macros (among others). The problem with this code is that it doesn't compile on ia64. The compiler is sufficiently confused that it inserts a call to __ia64_save_stack_nonlock(). This is a magic function that saves enough of the stack to allow for non-local gotos, such as would be the case for nested functions. Since it's not a compiler defined function, it needs a runtime implementation. This we have not in a standalone compilation as is the kernel. There's no indication that the compiler is not confused on other platforms. It's likely that saving the stack in those cases is trivial enough that the compiler doesn't need to off-load the complexity to a runtime function. The code is believed to be correctly translated, but has not been tested. The overall structure remained the same, except that it's made explicit. The macros that implement the try/catch construct have been removed to avoid reintroduction of their use. It's not a good idea. In general the rewritten code is slightly more optimal in that it doesn't need as much stack space and generally is smaller in size. Found by: LINT
722 lines
17 KiB
C
722 lines
17 KiB
C
/*
|
|
* Copyright (c) 2000-2001 Boris Popov
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Boris Popov.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/endian.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/kthread.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/unistd.h>
|
|
|
|
#include <netsmb/smb.h>
|
|
#include <netsmb/smb_conn.h>
|
|
#include <netsmb/smb_rq.h>
|
|
#include <netsmb/smb_tran.h>
|
|
#include <netsmb/smb_trantcp.h>
|
|
|
|
|
|
#define SMBIOD_SLEEP_TIMO 2
|
|
#define SMBIOD_PING_TIMO 60 /* seconds */
|
|
|
|
#define SMB_IOD_EVLOCKPTR(iod) (&((iod)->iod_evlock))
|
|
#define SMB_IOD_EVLOCK(iod) smb_sl_lock(&((iod)->iod_evlock))
|
|
#define SMB_IOD_EVUNLOCK(iod) smb_sl_unlock(&((iod)->iod_evlock))
|
|
|
|
#define SMB_IOD_RQLOCKPTR(iod) (&((iod)->iod_rqlock))
|
|
#define SMB_IOD_RQLOCK(iod) smb_sl_lock(&((iod)->iod_rqlock))
|
|
#define SMB_IOD_RQUNLOCK(iod) smb_sl_unlock(&((iod)->iod_rqlock))
|
|
|
|
#define smb_iod_wakeup(iod) wakeup(&(iod)->iod_flags)
|
|
|
|
|
|
static MALLOC_DEFINE(M_SMBIOD, "SMBIOD", "SMB network io daemon");
|
|
|
|
static int smb_iod_next;
|
|
|
|
static int smb_iod_sendall(struct smbiod *iod);
|
|
static int smb_iod_disconnect(struct smbiod *iod);
|
|
static void smb_iod_thread(void *);
|
|
|
|
static __inline void
|
|
smb_iod_rqprocessed(struct smb_rq *rqp, int error)
|
|
{
|
|
SMBRQ_SLOCK(rqp);
|
|
rqp->sr_lerror = error;
|
|
rqp->sr_rpgen++;
|
|
rqp->sr_state = SMBRQ_NOTIFIED;
|
|
wakeup(&rqp->sr_state);
|
|
SMBRQ_SUNLOCK(rqp);
|
|
}
|
|
|
|
static void
|
|
smb_iod_invrq(struct smbiod *iod)
|
|
{
|
|
struct smb_rq *rqp;
|
|
|
|
/*
|
|
* Invalidate all outstanding requests for this connection
|
|
*/
|
|
SMB_IOD_RQLOCK(iod);
|
|
TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) {
|
|
if (rqp->sr_flags & SMBR_INTERNAL)
|
|
SMBRQ_SUNLOCK(rqp);
|
|
rqp->sr_flags |= SMBR_RESTART;
|
|
smb_iod_rqprocessed(rqp, ENOTCONN);
|
|
}
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
}
|
|
|
|
static void
|
|
smb_iod_closetran(struct smbiod *iod)
|
|
{
|
|
struct smb_vc *vcp = iod->iod_vc;
|
|
struct thread *td = iod->iod_td;
|
|
|
|
if (vcp->vc_tdata == NULL)
|
|
return;
|
|
SMB_TRAN_DISCONNECT(vcp, td);
|
|
SMB_TRAN_DONE(vcp, td);
|
|
vcp->vc_tdata = NULL;
|
|
}
|
|
|
|
static void
|
|
smb_iod_dead(struct smbiod *iod)
|
|
{
|
|
iod->iod_state = SMBIOD_ST_DEAD;
|
|
smb_iod_closetran(iod);
|
|
smb_iod_invrq(iod);
|
|
}
|
|
|
|
static int
|
|
smb_iod_connect(struct smbiod *iod)
|
|
{
|
|
struct smb_vc *vcp = iod->iod_vc;
|
|
struct thread *td = iod->iod_td;
|
|
int error;
|
|
|
|
SMBIODEBUG("%d\n", iod->iod_state);
|
|
switch(iod->iod_state) {
|
|
case SMBIOD_ST_VCACTIVE:
|
|
SMBERROR("called for already opened connection\n");
|
|
return EISCONN;
|
|
case SMBIOD_ST_DEAD:
|
|
return ENOTCONN; /* XXX: last error code ? */
|
|
default:
|
|
break;
|
|
}
|
|
vcp->vc_genid++;
|
|
error = 0;
|
|
|
|
error = (int)SMB_TRAN_CREATE(vcp, td);
|
|
if (error)
|
|
goto fail;
|
|
SMBIODEBUG("tcreate\n");
|
|
if (vcp->vc_laddr) {
|
|
error = (int)SMB_TRAN_BIND(vcp, vcp->vc_laddr, td);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
SMBIODEBUG("tbind\n");
|
|
error = (int)SMB_TRAN_CONNECT(vcp, vcp->vc_paddr, td);
|
|
if (error)
|
|
goto fail;
|
|
SMB_TRAN_SETPARAM(vcp, SMBTP_SELECTID, &iod->iod_flags);
|
|
iod->iod_state = SMBIOD_ST_TRANACTIVE;
|
|
SMBIODEBUG("tconnect\n");
|
|
/* vcp->vc_mid = 0;*/
|
|
error = (int)smb_smb_negotiate(vcp, &iod->iod_scred);
|
|
if (error)
|
|
goto fail;
|
|
SMBIODEBUG("snegotiate\n");
|
|
error = (int)smb_smb_ssnsetup(vcp, &iod->iod_scred);
|
|
if (error)
|
|
goto fail;
|
|
iod->iod_state = SMBIOD_ST_VCACTIVE;
|
|
SMBIODEBUG("completed\n");
|
|
smb_iod_invrq(iod);
|
|
return (0);
|
|
|
|
fail:
|
|
smb_iod_dead(iod);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
smb_iod_disconnect(struct smbiod *iod)
|
|
{
|
|
struct smb_vc *vcp = iod->iod_vc;
|
|
|
|
SMBIODEBUG("\n");
|
|
if (iod->iod_state == SMBIOD_ST_VCACTIVE) {
|
|
smb_smb_ssnclose(vcp, &iod->iod_scred);
|
|
iod->iod_state = SMBIOD_ST_TRANACTIVE;
|
|
}
|
|
vcp->vc_smbuid = SMB_UID_UNKNOWN;
|
|
smb_iod_closetran(iod);
|
|
iod->iod_state = SMBIOD_ST_NOTCONN;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
smb_iod_treeconnect(struct smbiod *iod, struct smb_share *ssp)
|
|
{
|
|
int error;
|
|
|
|
if (iod->iod_state != SMBIOD_ST_VCACTIVE) {
|
|
if (iod->iod_state != SMBIOD_ST_DEAD)
|
|
return ENOTCONN;
|
|
iod->iod_state = SMBIOD_ST_RECONNECT;
|
|
error = smb_iod_connect(iod);
|
|
if (error)
|
|
return error;
|
|
}
|
|
SMBIODEBUG("tree reconnect\n");
|
|
SMBS_ST_LOCK(ssp);
|
|
ssp->ss_flags |= SMBS_RECONNECTING;
|
|
SMBS_ST_UNLOCK(ssp);
|
|
error = smb_smb_treeconnect(ssp, &iod->iod_scred);
|
|
SMBS_ST_LOCK(ssp);
|
|
ssp->ss_flags &= ~SMBS_RECONNECTING;
|
|
SMBS_ST_UNLOCK(ssp);
|
|
wakeup(&ssp->ss_vcgenid);
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
smb_iod_sendrq(struct smbiod *iod, struct smb_rq *rqp)
|
|
{
|
|
struct thread *td = iod->iod_td;
|
|
struct smb_vc *vcp = iod->iod_vc;
|
|
struct smb_share *ssp = rqp->sr_share;
|
|
struct mbuf *m;
|
|
int error;
|
|
|
|
SMBIODEBUG("iod_state = %d\n", iod->iod_state);
|
|
switch (iod->iod_state) {
|
|
case SMBIOD_ST_NOTCONN:
|
|
smb_iod_rqprocessed(rqp, ENOTCONN);
|
|
return 0;
|
|
case SMBIOD_ST_DEAD:
|
|
iod->iod_state = SMBIOD_ST_RECONNECT;
|
|
return 0;
|
|
case SMBIOD_ST_RECONNECT:
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
if (rqp->sr_sendcnt == 0) {
|
|
#ifdef movedtoanotherplace
|
|
if (vcp->vc_maxmux != 0 && iod->iod_muxcnt >= vcp->vc_maxmux)
|
|
return 0;
|
|
#endif
|
|
*rqp->sr_rqtid = htole16(ssp ? ssp->ss_tid : SMB_TID_UNKNOWN);
|
|
*rqp->sr_rquid = htole16(vcp ? vcp->vc_smbuid : 0);
|
|
mb_fixhdr(&rqp->sr_rq);
|
|
}
|
|
if (rqp->sr_sendcnt++ > 5) {
|
|
rqp->sr_flags |= SMBR_RESTART;
|
|
smb_iod_rqprocessed(rqp, rqp->sr_lerror);
|
|
/*
|
|
* If all attempts to send a request failed, then
|
|
* something is seriously hosed.
|
|
*/
|
|
return ENOTCONN;
|
|
}
|
|
SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x\n", rqp->sr_mid, 0, 0, 0);
|
|
m_dumpm(rqp->sr_rq.mb_top);
|
|
m = m_copym(rqp->sr_rq.mb_top, 0, M_COPYALL, M_TRYWAIT);
|
|
error = rqp->sr_lerror = m ? SMB_TRAN_SEND(vcp, m, td) : ENOBUFS;
|
|
if (error == 0) {
|
|
getnanotime(&rqp->sr_timesent);
|
|
iod->iod_lastrqsent = rqp->sr_timesent;
|
|
rqp->sr_flags |= SMBR_SENT;
|
|
rqp->sr_state = SMBRQ_SENT;
|
|
return 0;
|
|
}
|
|
/*
|
|
* Check for fatal errors
|
|
*/
|
|
if (SMB_TRAN_FATAL(vcp, error)) {
|
|
/*
|
|
* No further attempts should be made
|
|
*/
|
|
return ENOTCONN;
|
|
}
|
|
if (smb_rq_intr(rqp))
|
|
smb_iod_rqprocessed(rqp, EINTR);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Process incoming packets
|
|
*/
|
|
static int
|
|
smb_iod_recvall(struct smbiod *iod)
|
|
{
|
|
struct smb_vc *vcp = iod->iod_vc;
|
|
struct thread *td = iod->iod_td;
|
|
struct smb_rq *rqp;
|
|
struct mbuf *m;
|
|
u_char *hp;
|
|
u_short mid;
|
|
int error;
|
|
|
|
switch (iod->iod_state) {
|
|
case SMBIOD_ST_NOTCONN:
|
|
case SMBIOD_ST_DEAD:
|
|
case SMBIOD_ST_RECONNECT:
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
for (;;) {
|
|
m = NULL;
|
|
error = SMB_TRAN_RECV(vcp, &m, td);
|
|
if (error == EWOULDBLOCK)
|
|
break;
|
|
if (SMB_TRAN_FATAL(vcp, error)) {
|
|
smb_iod_dead(iod);
|
|
break;
|
|
}
|
|
if (error)
|
|
break;
|
|
if (m == NULL) {
|
|
SMBERROR("tran return NULL without error\n");
|
|
error = EPIPE;
|
|
continue;
|
|
}
|
|
m = m_pullup(m, SMB_HDRLEN);
|
|
if (m == NULL)
|
|
continue; /* wait for a good packet */
|
|
/*
|
|
* Now we got an entire and possibly invalid SMB packet.
|
|
* Be careful while parsing it.
|
|
*/
|
|
m_dumpm(m);
|
|
hp = mtod(m, u_char*);
|
|
if (bcmp(hp, SMB_SIGNATURE, SMB_SIGLEN) != 0) {
|
|
m_freem(m);
|
|
continue;
|
|
}
|
|
mid = SMB_HDRMID(hp);
|
|
SMBSDEBUG("mid %04x\n", (u_int)mid);
|
|
SMB_IOD_RQLOCK(iod);
|
|
TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) {
|
|
if (rqp->sr_mid != mid)
|
|
continue;
|
|
SMBRQ_SLOCK(rqp);
|
|
if (rqp->sr_rp.md_top == NULL) {
|
|
md_initm(&rqp->sr_rp, m);
|
|
} else {
|
|
if (rqp->sr_flags & SMBR_MULTIPACKET) {
|
|
md_append_record(&rqp->sr_rp, m);
|
|
} else {
|
|
SMBRQ_SUNLOCK(rqp);
|
|
SMBERROR("duplicate response %d (ignored)\n", mid);
|
|
break;
|
|
}
|
|
}
|
|
SMBRQ_SUNLOCK(rqp);
|
|
smb_iod_rqprocessed(rqp, 0);
|
|
break;
|
|
}
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
if (rqp == NULL) {
|
|
SMBERROR("drop resp with mid %d\n", (u_int)mid);
|
|
/* smb_printrqlist(vcp);*/
|
|
m_freem(m);
|
|
}
|
|
}
|
|
/*
|
|
* check for interrupts
|
|
*/
|
|
SMB_IOD_RQLOCK(iod);
|
|
TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) {
|
|
if (smb_td_intr(rqp->sr_cred->scr_td)) {
|
|
smb_iod_rqprocessed(rqp, EINTR);
|
|
}
|
|
}
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
smb_iod_request(struct smbiod *iod, int event, void *ident)
|
|
{
|
|
struct smbiod_event *evp;
|
|
int error;
|
|
|
|
SMBIODEBUG("\n");
|
|
evp = smb_zmalloc(sizeof(*evp), M_SMBIOD, M_WAITOK);
|
|
evp->ev_type = event;
|
|
evp->ev_ident = ident;
|
|
SMB_IOD_EVLOCK(iod);
|
|
STAILQ_INSERT_TAIL(&iod->iod_evlist, evp, ev_link);
|
|
if ((event & SMBIOD_EV_SYNC) == 0) {
|
|
SMB_IOD_EVUNLOCK(iod);
|
|
smb_iod_wakeup(iod);
|
|
return 0;
|
|
}
|
|
smb_iod_wakeup(iod);
|
|
msleep(evp, SMB_IOD_EVLOCKPTR(iod), PWAIT | PDROP, "90evw", 0);
|
|
error = evp->ev_error;
|
|
free(evp, M_SMBIOD);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Place request in the queue.
|
|
* Request from smbiod have a high priority.
|
|
*/
|
|
int
|
|
smb_iod_addrq(struct smb_rq *rqp)
|
|
{
|
|
struct smb_vc *vcp = rqp->sr_vc;
|
|
struct smbiod *iod = vcp->vc_iod;
|
|
int error;
|
|
|
|
SMBIODEBUG("\n");
|
|
if (rqp->sr_cred->scr_td != NULL &&
|
|
rqp->sr_cred->scr_td->td_proc == iod->iod_p) {
|
|
rqp->sr_flags |= SMBR_INTERNAL;
|
|
SMB_IOD_RQLOCK(iod);
|
|
TAILQ_INSERT_HEAD(&iod->iod_rqlist, rqp, sr_link);
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
for (;;) {
|
|
if (smb_iod_sendrq(iod, rqp) != 0) {
|
|
smb_iod_dead(iod);
|
|
break;
|
|
}
|
|
/*
|
|
* we don't need to lock state field here
|
|
*/
|
|
if (rqp->sr_state != SMBRQ_NOTSENT)
|
|
break;
|
|
tsleep(&iod->iod_flags, PWAIT, "90sndw", hz);
|
|
}
|
|
if (rqp->sr_lerror)
|
|
smb_iod_removerq(rqp);
|
|
return rqp->sr_lerror;
|
|
}
|
|
|
|
switch (iod->iod_state) {
|
|
case SMBIOD_ST_NOTCONN:
|
|
return ENOTCONN;
|
|
case SMBIOD_ST_DEAD:
|
|
error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_CONNECT | SMBIOD_EV_SYNC, NULL);
|
|
if (error)
|
|
return error;
|
|
return EXDEV;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
SMB_IOD_RQLOCK(iod);
|
|
for (;;) {
|
|
if (vcp->vc_maxmux == 0) {
|
|
SMBERROR("maxmux == 0\n");
|
|
break;
|
|
}
|
|
if (iod->iod_muxcnt < vcp->vc_maxmux)
|
|
break;
|
|
iod->iod_muxwant++;
|
|
msleep(&iod->iod_muxwant, SMB_IOD_RQLOCKPTR(iod),
|
|
PWAIT, "90mux", 0);
|
|
}
|
|
iod->iod_muxcnt++;
|
|
TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link);
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
smb_iod_wakeup(iod);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
smb_iod_removerq(struct smb_rq *rqp)
|
|
{
|
|
struct smb_vc *vcp = rqp->sr_vc;
|
|
struct smbiod *iod = vcp->vc_iod;
|
|
|
|
SMBIODEBUG("\n");
|
|
if (rqp->sr_flags & SMBR_INTERNAL) {
|
|
SMB_IOD_RQLOCK(iod);
|
|
TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link);
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
return 0;
|
|
}
|
|
SMB_IOD_RQLOCK(iod);
|
|
while (rqp->sr_flags & SMBR_XLOCK) {
|
|
rqp->sr_flags |= SMBR_XLOCKWANT;
|
|
msleep(rqp, SMB_IOD_RQLOCKPTR(iod), PWAIT, "90xrm", 0);
|
|
}
|
|
TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link);
|
|
iod->iod_muxcnt--;
|
|
if (iod->iod_muxwant) {
|
|
iod->iod_muxwant--;
|
|
wakeup(&iod->iod_muxwant);
|
|
}
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
smb_iod_waitrq(struct smb_rq *rqp)
|
|
{
|
|
struct smbiod *iod = rqp->sr_vc->vc_iod;
|
|
int error;
|
|
|
|
SMBIODEBUG("\n");
|
|
if (rqp->sr_flags & SMBR_INTERNAL) {
|
|
for (;;) {
|
|
smb_iod_sendall(iod);
|
|
smb_iod_recvall(iod);
|
|
if (rqp->sr_rpgen != rqp->sr_rplast)
|
|
break;
|
|
tsleep(&iod->iod_flags, PWAIT, "90irq", hz);
|
|
}
|
|
smb_iod_removerq(rqp);
|
|
return rqp->sr_lerror;
|
|
|
|
}
|
|
SMBRQ_SLOCK(rqp);
|
|
if (rqp->sr_rpgen == rqp->sr_rplast)
|
|
msleep(&rqp->sr_state, SMBRQ_SLOCKPTR(rqp), PWAIT, "90wrq", 0);
|
|
rqp->sr_rplast++;
|
|
SMBRQ_SUNLOCK(rqp);
|
|
error = rqp->sr_lerror;
|
|
if (rqp->sr_flags & SMBR_MULTIPACKET) {
|
|
/*
|
|
* If request should stay in the list, then reinsert it
|
|
* at the end of queue so other waiters have chance to concur
|
|
*/
|
|
SMB_IOD_RQLOCK(iod);
|
|
TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link);
|
|
TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link);
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
} else
|
|
smb_iod_removerq(rqp);
|
|
return error;
|
|
}
|
|
|
|
|
|
static int
|
|
smb_iod_sendall(struct smbiod *iod)
|
|
{
|
|
struct smb_vc *vcp = iod->iod_vc;
|
|
struct smb_rq *rqp;
|
|
struct timespec ts, tstimeout;
|
|
int herror;
|
|
|
|
herror = 0;
|
|
/*
|
|
* Loop through the list of requests and send them if possible
|
|
*/
|
|
SMB_IOD_RQLOCK(iod);
|
|
TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) {
|
|
switch (rqp->sr_state) {
|
|
case SMBRQ_NOTSENT:
|
|
rqp->sr_flags |= SMBR_XLOCK;
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
herror = smb_iod_sendrq(iod, rqp);
|
|
SMB_IOD_RQLOCK(iod);
|
|
rqp->sr_flags &= ~SMBR_XLOCK;
|
|
if (rqp->sr_flags & SMBR_XLOCKWANT) {
|
|
rqp->sr_flags &= ~SMBR_XLOCKWANT;
|
|
wakeup(rqp);
|
|
}
|
|
break;
|
|
case SMBRQ_SENT:
|
|
SMB_TRAN_GETPARAM(vcp, SMBTP_TIMEOUT, &tstimeout);
|
|
timespecadd(&tstimeout, &tstimeout);
|
|
getnanotime(&ts);
|
|
timespecsub(&ts, &tstimeout);
|
|
if (timespeccmp(&ts, &rqp->sr_timesent, >)) {
|
|
smb_iod_rqprocessed(rqp, ETIMEDOUT);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (herror)
|
|
break;
|
|
}
|
|
SMB_IOD_RQUNLOCK(iod);
|
|
if (herror == ENOTCONN)
|
|
smb_iod_dead(iod);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* "main" function for smbiod daemon
|
|
*/
|
|
static __inline void
|
|
smb_iod_main(struct smbiod *iod)
|
|
{
|
|
/* struct smb_vc *vcp = iod->iod_vc;*/
|
|
struct smbiod_event *evp;
|
|
/* struct timespec tsnow;*/
|
|
int error;
|
|
|
|
SMBIODEBUG("\n");
|
|
error = 0;
|
|
|
|
/*
|
|
* Check all interesting events
|
|
*/
|
|
for (;;) {
|
|
SMB_IOD_EVLOCK(iod);
|
|
evp = STAILQ_FIRST(&iod->iod_evlist);
|
|
if (evp == NULL) {
|
|
SMB_IOD_EVUNLOCK(iod);
|
|
break;
|
|
}
|
|
STAILQ_REMOVE_HEAD(&iod->iod_evlist, ev_link);
|
|
evp->ev_type |= SMBIOD_EV_PROCESSING;
|
|
SMB_IOD_EVUNLOCK(iod);
|
|
switch (evp->ev_type & SMBIOD_EV_MASK) {
|
|
case SMBIOD_EV_CONNECT:
|
|
iod->iod_state = SMBIOD_ST_RECONNECT;
|
|
evp->ev_error = smb_iod_connect(iod);
|
|
break;
|
|
case SMBIOD_EV_DISCONNECT:
|
|
evp->ev_error = smb_iod_disconnect(iod);
|
|
break;
|
|
case SMBIOD_EV_TREECONNECT:
|
|
evp->ev_error = smb_iod_treeconnect(iod, evp->ev_ident);
|
|
break;
|
|
case SMBIOD_EV_SHUTDOWN:
|
|
iod->iod_flags |= SMBIOD_SHUTDOWN;
|
|
break;
|
|
case SMBIOD_EV_NEWRQ:
|
|
break;
|
|
}
|
|
if (evp->ev_type & SMBIOD_EV_SYNC) {
|
|
SMB_IOD_EVLOCK(iod);
|
|
wakeup(evp);
|
|
SMB_IOD_EVUNLOCK(iod);
|
|
} else
|
|
free(evp, M_SMBIOD);
|
|
}
|
|
#if 0
|
|
if (iod->iod_state == SMBIOD_ST_VCACTIVE) {
|
|
getnanotime(&tsnow);
|
|
timespecsub(&tsnow, &iod->iod_pingtimo);
|
|
if (timespeccmp(&tsnow, &iod->iod_lastrqsent, >)) {
|
|
smb_smb_echo(vcp, &iod->iod_scred);
|
|
}
|
|
}
|
|
#endif
|
|
smb_iod_sendall(iod);
|
|
smb_iod_recvall(iod);
|
|
return;
|
|
}
|
|
|
|
void
|
|
smb_iod_thread(void *arg)
|
|
{
|
|
struct smbiod *iod = arg;
|
|
|
|
mtx_lock(&Giant);
|
|
/*
|
|
* Here we assume that the thread structure will be the same
|
|
* for an entire kthread (kproc, to be more precise) life.
|
|
*/
|
|
iod->iod_td = curthread;
|
|
smb_makescred(&iod->iod_scred, iod->iod_td, NULL);
|
|
while ((iod->iod_flags & SMBIOD_SHUTDOWN) == 0) {
|
|
smb_iod_main(iod);
|
|
SMBIODEBUG("going to sleep for %d ticks\n", iod->iod_sleeptimo);
|
|
/* mtx_unlock(&Giant, MTX_DEF);*/
|
|
if (iod->iod_flags & SMBIOD_SHUTDOWN)
|
|
break;
|
|
tsleep(&iod->iod_flags, PWAIT, "90idle", iod->iod_sleeptimo);
|
|
}
|
|
/* mtx_lock(&Giant, MTX_DEF);*/
|
|
kthread_exit(0);
|
|
}
|
|
|
|
int
|
|
smb_iod_create(struct smb_vc *vcp)
|
|
{
|
|
struct smbiod *iod;
|
|
int error;
|
|
|
|
iod = smb_zmalloc(sizeof(*iod), M_SMBIOD, M_WAITOK);
|
|
iod->iod_id = smb_iod_next++;
|
|
iod->iod_state = SMBIOD_ST_NOTCONN;
|
|
iod->iod_vc = vcp;
|
|
iod->iod_sleeptimo = hz * SMBIOD_SLEEP_TIMO;
|
|
iod->iod_pingtimo.tv_sec = SMBIOD_PING_TIMO;
|
|
getnanotime(&iod->iod_lastrqsent);
|
|
vcp->vc_iod = iod;
|
|
smb_sl_init(&iod->iod_rqlock, "90rql");
|
|
TAILQ_INIT(&iod->iod_rqlist);
|
|
smb_sl_init(&iod->iod_evlock, "90evl");
|
|
STAILQ_INIT(&iod->iod_evlist);
|
|
error = kthread_create(smb_iod_thread, iod, &iod->iod_p,
|
|
RFNOWAIT, 0, "smbiod%d", iod->iod_id);
|
|
if (error) {
|
|
SMBERROR("can't start smbiod: %d", error);
|
|
free(iod, M_SMBIOD);
|
|
return error;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
smb_iod_destroy(struct smbiod *iod)
|
|
{
|
|
smb_iod_request(iod, SMBIOD_EV_SHUTDOWN | SMBIOD_EV_SYNC, NULL);
|
|
smb_sl_destroy(&iod->iod_rqlock);
|
|
smb_sl_destroy(&iod->iod_evlock);
|
|
free(iod, M_SMBIOD);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
smb_iod_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
smb_iod_done(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|