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;
}
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_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_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;
}
/*
* 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 __wind_task_resume(struct task_struct *curr, struct pt_regs *regs)
{
WIND_TCB *pTcb = (WIND_TCB *)xnregistry_fetch(__xn_reg_arg1(regs));
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
if (taskResume((TASK_ID) pTcb) == ERROR)
return wind_errnoget();
return 0;
}
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_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_msgq_send(struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
char tmp_buf[128], *msgbuf;
wind_msgq_t *msgq;
int timeout, prio;
unsigned nbytes;
STATUS err;
nbytes = __xn_reg_arg3(regs);
timeout = __xn_reg_arg4(regs);
prio = __xn_reg_arg5(regs);
if (timeout != NO_WAIT && !xnpod_primary_p())
return -EPERM;
msgq = (wind_msgq_t *)xnregistry_fetch(handle);
if (!msgq)
return S_objLib_OBJ_ID_ERROR;
if (nbytes > msgq->msg_length)
return S_msgQLib_INVALID_MSG_LENGTH;
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. */
if (__xn_safe_copy_from_user(msgbuf, (void __user *)__xn_reg_arg2(regs), nbytes))
err = -EFAULT;
else {
if (msgQSend((MSG_Q_ID)msgq, msgbuf, nbytes, timeout, prio) == ERROR)
err = wind_errnoget();
else
err = 0;
}
if (msgbuf != tmp_buf)
xnfree(msgbuf);
return err;
}
static int __wind_task_verifyid(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
WIND_TCB *pTcb;
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
if (taskIdVerify((TASK_ID) pTcb) == ERROR)
return wind_errnoget();
return 0;
}
static int __wind_wd_cancel(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
wind_wd_t *wd;
wd = (wind_wd_t *)xnregistry_fetch(handle);
if (!wd)
return S_objLib_OBJ_ID_ERROR;
if (wdCancel((WDOG_ID)wd) == ERROR)
return wind_errnoget();
return 0;
}
static int __wind_sem_flush(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
wind_sem_t *sem;
sem = (wind_sem_t *)xnregistry_fetch(handle);
if (!sem)
return S_objLib_OBJ_ID_ERROR;
if (semFlush((SEM_ID)sem) == ERROR)
return wind_errnoget();
return 0;
}
static int __wind_msgq_delete(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
wind_msgq_t *msgq;
msgq = (wind_msgq_t *)xnregistry_fetch(handle);
if (!msgq)
return S_objLib_OBJ_ID_ERROR;
if (msgQDelete((MSG_Q_ID)msgq) == ERROR)
return wind_errnoget();
return 0;
}
static int __wind_sem_take(struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
int timeout = __xn_reg_arg2(regs);
wind_sem_t *sem;
sem = (wind_sem_t *)xnregistry_fetch(handle);
if (!sem)
return S_objLib_OBJ_ID_ERROR;
if (semTake((SEM_ID)sem, timeout) == ERROR)
return wind_errnoget();
return 0;
}
static int __wind_task_suspend(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
WIND_TCB *pTcb;
if (handle)
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
else
pTcb = __wind_task_current(curr);
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
if (taskSuspend((TASK_ID) pTcb) == ERROR)
return wind_errnoget();
return 0;
}
static int __wind_msgq_nummsgs(struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
wind_msgq_t *msgq;
int nummsgs;
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();
return __xn_safe_copy_to_user((void __user *)__xn_reg_arg2(regs), &nummsgs,
sizeof(nummsgs));
}
static int __wind_errno_taskset(struct task_struct *curr, struct pt_regs *regs)
{
xnhandle_t handle = __xn_reg_arg1(regs);
int errcode = __xn_reg_arg2(regs);
WIND_TCB *pTcb;
if (!handle) {
wind_errnoset(errcode);
return 0;
}
pTcb = (WIND_TCB *)xnregistry_fetch(handle);
if (!pTcb)
return S_objLib_OBJ_ID_ERROR;
if (errnoOfTaskSet((TASK_ID) pTcb, errcode) == ERROR)
return wind_errnoget();
return 0;
}