static int __sc_qinquiry(struct task_struct *curr, struct pt_regs *regs)
{
int qid, count, err;
char *msg;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(count)))
return -EFAULT;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg3(regs), sizeof(msg)))
return -EFAULT;
qid = __xn_reg_arg1(regs);
msg = sc_qinquiry(qid, &count, &err);
if (!err) {
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs),
&count, sizeof(count));
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg3(regs),
&msg, sizeof(msg));
}
return err;
}
static int __sc_gclock(struct task_struct *curr, struct pt_regs *regs)
{
struct timespec time;
unsigned long ns;
int err;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(time)))
return -EFAULT;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(ns)))
return -EFAULT;
sc_gclock(&time, &ns, &err);
if (!err) {
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs),
&time, sizeof(time));
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &ns,
sizeof(ns));
}
return err;
}
static int __sc_tinquiry(struct task_struct *curr, struct pt_regs *regs)
{
int err, tid, pinfo[3];
TCB *tcb;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(pinfo)))
return -EFAULT;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(*tcb)))
return -EFAULT;
tid = __xn_reg_arg3(regs);
tcb = sc_tinquiry(pinfo, tid, &err);
if (!err) {
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs),
pinfo, sizeof(pinfo));
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), tcb,
sizeof(*tcb));
}
return err;
}
static int __wind_msgq_receive(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
char tmp_buf[128], *msgbuf;
wind_msgq_t *msgq;
int timeout, err;
unsigned nbytes;
nbytes = __xn_reg_arg3(regs);
timeout = __xn_reg_arg4(regs);
if (!__xn_access_ok(curr, VERIFY_WRITE, __xn_reg_arg2(regs), nbytes))
return -EFAULT;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg5(regs), sizeof(nbytes)))
return -EFAULT;
msgq = (wind_msgq_t *)xnregistry_fetch(handle);
if (!msgq)
return S_objLib_OBJ_ID_ERROR;
if (nbytes <= sizeof(tmp_buf))
msgbuf = tmp_buf;
else {
msgbuf = (char *)xnmalloc(nbytes);
if (!msgbuf)
return S_memLib_NOT_ENOUGH_MEMORY;
}
/* This is sub-optimal since we end up copying the data twice. */
err = msgQReceive((MSG_Q_ID)msgq, msgbuf, nbytes, timeout);
if (err != ERROR) {
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs),
msgbuf, err);
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg5(regs),
&err, sizeof(err));
err = 0;
} else
err = wind_errnoget();
if (msgbuf != tmp_buf)
xnfree(msgbuf);
return err;
}
static int __wind_taskinfo_name(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
const char *name;
WIND_TCB *pTcb;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), XNOBJECT_NAME_LEN))
return -EFAULT;
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
name = taskName((TASK_ID) pTcb);
if (!name)
return S_objLib_OBJ_ID_ERROR;
/* We assume that a VxWorks task name fits in XNOBJECT_NAME_LEN
bytes, including the trailing \0. */
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), name,
strlen(name) + 1);
return 0;
}
static int __wind_taskinfo_status(struct task_struct *curr,
struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
unsigned long status;
WIND_TCB *pTcb;
spl_t s;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(status)))
return -EFAULT;
xnlock_get_irqsave(&nklock, s);
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
if (!pTcb || pTcb->magic != WIND_TASK_MAGIC) {
xnlock_put_irqrestore(&nklock, s);
return S_objLib_OBJ_ID_ERROR;
}
status = xnthread_state_flags(&pTcb->threadbase);
xnlock_put_irqrestore(&nklock, s);
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &status,
sizeof(status));
return 0;
}
/*
* int __wind_taskinfo_get(TASK_ID task_id, TASK_DESC *desc)
*/
static int __wind_taskinfo_get(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
TASK_DESC desc;
WIND_TCB *pTcb;
int err;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(desc)))
return -EFAULT;
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
err = taskInfoGet((TASK_ID)pTcb, &desc);
if (!err) {
/* Replace the kernel-based pointer by the userland handle. */
desc.td_tid = handle;
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &desc,
sizeof(desc));
}
return err;
}
static int __sc_pend(struct task_struct *curr, struct pt_regs *regs)
{
char **mboxp, *msg;
long timeout;
int err;
/* We should be able to write to a mailbox storage, even if we
* actually don't. */
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(msg)))
return -EFAULT;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg3(regs), sizeof(msg)))
return -EFAULT;
mboxp = (char **)__xn_reg_arg1(regs);
timeout = __xn_reg_arg2(regs);
msg = sc_pend(mboxp, timeout, &err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg3(regs),
&msg, sizeof(msg));
return err;
}
static int __wind_task_priorityget(struct task_struct *curr,
struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
WIND_TCB *pTcb;
int prio;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(prio)))
return -EFAULT;
if (handle)
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
else
pTcb = __wind_task_current(curr);
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
if (taskPriorityGet((TASK_ID) pTcb, &prio) == ERROR)
return wind_errnoget();
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &prio,
sizeof(prio));
return 0;
}
static int __wind_msgq_nummsgs(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
wind_msgq_t *msgq;
int nummsgs;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(nummsgs)))
return -EFAULT;
msgq = (wind_msgq_t *)xnregistry_fetch(handle);
if (!msgq)
return S_objLib_OBJ_ID_ERROR;
nummsgs = msgQNumMsgs((MSG_Q_ID)msgq);
if (nummsgs == ERROR)
return wind_errnoget();
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &nummsgs,
sizeof(nummsgs));
return 0;
}
static int __wind_task_nametoid(struct task_struct *curr, struct pt_regs *regs)
{
char name[XNOBJECT_NAME_LEN];
WIND_TCB_PLACEHOLDER ph;
xnhandle_t handle;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(ph)))
return -EFAULT;
if (!__xn_reg_arg1(regs))
return S_taskLib_NAME_NOT_FOUND;
if (!__xn_access_ok
(curr, VERIFY_READ, __xn_reg_arg1(regs), sizeof(name)))
return -EFAULT;
__xn_strncpy_from_user(curr, name,
(const char __user *)__xn_reg_arg1(regs),
sizeof(name) - 1);
name[sizeof(name) - 1] = '\0';
handle = taskNameToHandle(name);
if (handle == XN_NO_HANDLE)
return wind_errnoget();
ph.handle = handle; /* Copy back the task handle. */
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &ph,
sizeof(ph));
return 0;
}
static int __wind_errno_taskget(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
WIND_TCB *pTcb;
int errcode;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(errcode)))
return -EFAULT;
if (!handle)
errcode = wind_errnoget();
else {
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
errcode = errnoOfTaskGet((TASK_ID) pTcb);
if (errcode == ERROR)
return wind_errnoget();
}
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &errcode,
sizeof(errcode));
return 0;
}
static int __wind_wd_wait(struct task_struct *curr, struct pt_regs *regs)
{
xnholder_t *holder;
wind_rholder_t *rh;
WIND_TCB *pTcb;
wind_wd_t *wd;
int err = 0;
spl_t s;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(wd->wdt)))
return -EFAULT;
rh = wind_get_rholder();
xnlock_get_irqsave(&nklock, s);
pTcb = __wind_task_current(curr);
if (xnthread_base_priority(&pTcb->threadbase) != XNCORE_IRQ_PRIO)
/* Renice the waiter above all regular tasks if needed. */
xnpod_renice_thread(&pTcb->threadbase, XNCORE_IRQ_PRIO);
if (!emptyq_p(&rh->wdpending))
goto pull_event;
xnsynch_sleep_on(&rh->wdsynch, XN_INFINITE, XN_RELATIVE);
if (xnthread_test_info(&pTcb->threadbase, XNBREAK)) {
err = -EINTR; /* Unblocked. */
goto unlock_and_exit;
}
if (xnthread_test_info(&pTcb->threadbase, XNRMID)) {
err = -EIDRM; /* Watchdog deleted while pending. */
goto unlock_and_exit;
}
pull_event:
holder = getq(&rh->wdpending);
if (holder) {
wd = link2wind_wd(holder);
/* We need the following to mark the watchdog as unqueued. */
inith(holder);
xnlock_put_irqrestore(&nklock, s);
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs),
&wd->wdt, sizeof(wd->wdt));
return 0;
}
unlock_and_exit:
xnlock_put_irqrestore(&nklock, s);
return err;
}
static int __rt_shm_heap_open(struct task_struct *curr, struct pt_regs *regs)
{
unsigned long name;
int size;
int suprt, in_kheap;
unsigned long off;
unsigned long opaque;
void *ret;
extern void *_shm_alloc(unsigned long name, int size, int suprt,
int in_kheap, unsigned long *opaque);
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(size))
|| !__xn_access_ok(curr, VERIFY_WRITE, __xn_reg_arg5(regs),
sizeof(off)))
return 0;
name = (unsigned long)__xn_reg_arg1(regs);
/* Size of heap space. */
__xn_copy_from_user(curr, &size, (void __user *)__xn_reg_arg2(regs),
sizeof(size));
/* Creation mode. */
suprt = (int)__xn_reg_arg3(regs);
in_kheap = (int)__xn_reg_arg4(regs);
ret = _shm_alloc(name, size, suprt, in_kheap, &opaque);
if (!ret)
goto free_and_fail;
off = xnheap_mapped_offset((xnheap_t *)opaque, ret);
size = (int)((xnheap_t *)opaque)->extentsize;
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &size,
sizeof(size));
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg5(regs), &off,
sizeof(off));
return (int)opaque;
free_and_fail:
return 0;
}
static int __sc_tecreate(struct task_struct *curr, struct pt_regs *regs)
{
xncompletion_t __user *u_completion;
struct vrtx_arg_bulk bulk;
int prio, mode, tid, err;
vrtxtask_t *task;
if (!__xn_access_ok
(curr, VERIFY_READ, __xn_reg_arg1(regs), sizeof(bulk)))
return -EFAULT;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(tid)))
return -EFAULT;
__xn_copy_from_user(curr, &bulk, (void __user *)__xn_reg_arg1(regs),
sizeof(bulk));
/* Suggested task id. */
tid = bulk.a1;
/* Task priority. */
prio = bulk.a2;
/* Task mode. */
mode = bulk.a3 | 0x100;
/* Completion descriptor our parent thread is pending on. */
u_completion = (xncompletion_t __user *)__xn_reg_arg3(regs);
task = xnmalloc(sizeof(*task));
if (!task) {
err = ER_TCB;
goto done;
}
xnthread_clear_state(&task->threadbase, XNZOMBIE);
tid =
sc_tecreate_inner(task, NULL, tid, prio, mode, 0, 0, NULL, 0, &err);
if (tid < 0) {
if (u_completion)
xnshadow_signal_completion(u_completion, err);
} else {
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs),
&tid, sizeof(tid));
err = xnshadow_map(&task->threadbase, u_completion);
}
if (err && !xnthread_test_state(&task->threadbase, XNZOMBIE))
xnfree(task);
done:
return err;
}
static int __wind_wd_start(struct task_struct *curr, struct pt_regs *regs)
{
wind_rholder_t *rh;
long start_server;
xnhandle_t handle;
wind_wd_t *wd;
int timeout;
spl_t s;
if (!__xn_access_ok(curr, VERIFY_WRITE, __xn_reg_arg5(regs), sizeof(start_server)))
return -EFAULT;
handle = __xn_reg_arg1(regs);
wd = (wind_wd_t *)xnregistry_fetch(handle);
if (!wd)
return S_objLib_OBJ_ID_ERROR;
rh = wind_get_rholder();
if (wd->rh != rh)
/*
* User may not fiddle with watchdogs created from
* other processes.
*/
return S_objLib_OBJ_UNAVAILABLE;
timeout = __xn_reg_arg2(regs);
xnlock_get_irqsave(&nklock, s);
if (wdStart
((WDOG_ID)wd, timeout, (wind_timer_t) & __wind_wd_handler,
(long)wd) == ERROR) {
xnlock_put_irqrestore(&nklock, s);
return wind_errnoget();
}
wd->wdt.handler = (wind_timer_t) __xn_reg_arg3(regs);
wd->wdt.arg = (long)__xn_reg_arg4(regs);
start_server = rh->wdcount++ == 0;
xnlock_put_irqrestore(&nklock, s);
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg5(regs), &start_server,
sizeof(start_server));
return 0;
}
static int __wind_sys_clkrateget(struct task_struct *curr, struct pt_regs *regs)
{
int hz;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(hz)))
return -EFAULT;
hz = sysClkRateGet();
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs), &hz,
sizeof(hz));
return 0;
}
static int __sc_gtime(struct task_struct *curr, struct pt_regs *regs)
{
unsigned long ticks;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(ticks)))
return -EFAULT;
ticks = sc_gtime();
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs), &ticks,
sizeof(ticks));
return 0;
}
static int __wind_tick_get(struct task_struct *curr, struct pt_regs *regs)
{
ULONG ticks;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(ticks)))
return -EFAULT;
ticks = tickGet();
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs), &ticks,
sizeof(ticks));
return 0;
}
static int __sc_fcreate(struct task_struct *curr, struct pt_regs *regs)
{
int fid, err;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(fid)))
return -EFAULT;
fid = sc_fcreate(&err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs),
&fid, sizeof(fid));
return err;
}
static int __wind_taskinfo_iddfl(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
TASK_ID ret_id;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(ret_id)))
return -EFAULT;
ret_id = taskIdDefault(handle);
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs), &ret_id,
sizeof(ret_id));
return 0;
}
static int __wind_task_setmode(struct task_struct *curr, struct pt_regs *regs)
{
int setmask, clrmask, mode_r;
clrmask = __xn_reg_arg1(regs);
setmask = __xn_reg_arg2(regs);
/* Primary required: current thread must be valid. */
mode_r = xnpod_set_thread_mode(xnpod_current_thread(),
clrmask, setmask);
if (__xn_reg_arg3(regs))
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg3(regs),
&mode_r, sizeof(mode_r));
return 0;
}
static RTAI_SYSCALL_MODE int sys_rtdm_recvmsg(long fd, struct msghdr *msg, long flags)
{
struct msghdr krnl_msg;
struct task_struct *curr = current;
int ret;
if (unlikely(!__xn_access_ok(curr, VERIFY_WRITE, msg, sizeof(krnl_msg)))) {
return -EFAULT;
}
__xn_copy_from_user(curr, &krnl_msg, msg, sizeof(krnl_msg));
if ((ret = __rt_dev_recvmsg(curr, fd, &krnl_msg, flags)) >= 0) {
__xn_copy_to_user(curr, msg, &krnl_msg, sizeof(krnl_msg));
}
return ret;
}
static int __sc_minquiry(struct task_struct *curr, struct pt_regs *regs)
{
int mid, status, err;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(status)))
return -EFAULT;
mid = __xn_reg_arg1(regs);
status = sc_minquiry(mid, &err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs),
&status, sizeof(status));
return err;
}
static int __sc_sinquiry(struct task_struct *curr, struct pt_regs *regs)
{
int semid, count_r, err;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg2(regs), sizeof(count_r)))
return -EFAULT;
semid = __xn_reg_arg1(regs);
count_r = sc_sinquiry(semid, &err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg2(regs),
&count_r, sizeof(count_r));
return err;
}
static int __sc_hinquiry(struct task_struct *curr, struct pt_regs *regs)
{
int err, hid, pinfo[3];
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg1(regs), sizeof(pinfo)))
return -EFAULT;
hid = __xn_reg_arg2(regs);
sc_tinquiry(pinfo, hid, &err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg1(regs),
pinfo, sizeof(pinfo));
return err;
}
static int __sc_fclear(struct task_struct *curr, struct pt_regs *regs)
{
int fid, mask, mask_r, err;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg3(regs), sizeof(mask_r)))
return -EFAULT;
fid = __xn_reg_arg1(regs);
mask = __xn_reg_arg2(regs);
mask_r = sc_fclear(fid, mask, &err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg3(regs),
&mask_r, sizeof(mask_r));
return err;
}
static int __sc_qecreate(struct task_struct *curr, struct pt_regs *regs)
{
int qid, qsize, opt, err;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg4(regs), sizeof(qid)))
return -EFAULT;
qid = __xn_reg_arg1(regs);
qsize = __xn_reg_arg2(regs);
opt = __xn_reg_arg3(regs);
qid = sc_qecreate(qid, qsize, opt, &err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg4(regs),
&qid, sizeof(qid));
return err;
}
static int __sc_screate(struct task_struct *curr, struct pt_regs *regs)
{
int semid, opt, err;
unsigned initval;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg3(regs), sizeof(semid)))
return -EFAULT;
initval = __xn_reg_arg1(regs);
opt = __xn_reg_arg2(regs);
semid = sc_screate(initval, opt, &err);
if (!err)
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg3(regs),
&semid, sizeof(semid));
return err;
}
static int __sc_hcreate(struct task_struct *curr, struct pt_regs *regs)
{
unsigned log2psize;
vrtx_hdesc_t hdesc;
vrtxheap_t *heap;
u_long heapsize;
int err, hid;
spl_t s;
if (!__xn_access_ok
(curr, VERIFY_WRITE, __xn_reg_arg3(regs), sizeof(hdesc)))
return -EFAULT;
/* Size of heap space. */
heapsize = __xn_reg_arg1(regs);
/* Page size. */
log2psize = (int)__xn_reg_arg2(regs);
hid = sc_hcreate(NULL, heapsize, log2psize, &err);
if (err)
return err;
xnlock_get_irqsave(&nklock, s);
heap = xnmap_fetch(vrtx_heap_idmap, hid);
if (heap) { /* Paranoid. */
heap->mm = curr->mm;
hdesc.hid = hid;
hdesc.hcb = &heap->sysheap;
hdesc.hsize = xnheap_extentsize(&heap->sysheap);
xnlock_put_irqrestore(&nklock, s);
__xn_copy_to_user(curr, (void __user *)__xn_reg_arg3(regs),
&hdesc, sizeof(hdesc));
} else {
xnlock_put_irqrestore(&nklock, s);
err = ER_ID;
}
return err;
}