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hurd: Implement _S_msg_get_dtable

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This will be needed for implementing lsof.
This commit is contained in:
Samuel Thibault 2022-01-02 02:22:13 +01:00
parent b92a49359f
commit a51faeee6a
1 changed files with 47 additions and 4 deletions
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51
hurd/hurdmsg.c
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@ -385,15 +385,58 @@ _S_msg_set_environment (mach_port_t msgport, mach_port_t auth,
}
/* XXX */
kern_return_t
_S_msg_get_dtable (mach_port_t process,
mach_port_t refport,
mach_port_t auth,
portarray_t *dtable,
mach_msg_type_name_t *dtablePoly,
mach_msg_type_number_t *dtableCnt)
{ return EOPNOTSUPP; }
{
mach_port_t *ports;
mach_msg_type_number_t i;
error_t err;
AUTHCHECK;
HURD_CRITICAL_BEGIN;
__mutex_lock (&_hurd_dtable_lock);
if (err = __vm_allocate (__mach_task_self (), (vm_address_t *) &ports,
_hurd_dtablesize * sizeof(mach_port_t), 1))
goto out;
for (i = 0; i < _hurd_dtablesize; i++)
{
struct hurd_fd *cell = _hurd_dtable[i];
if (cell == NULL)
ports[i] = MACH_PORT_NULL;
else
{
__spin_lock (&cell->port.lock);
if (cell->port.port == MACH_PORT_NULL)
ports[i] = MACH_PORT_NULL;
else
{
ports[i] = cell->port.port;
/* We will move this send right. */
__mach_port_mod_refs (__mach_task_self (), ports[i],
MACH_PORT_RIGHT_SEND, +1);
}
__spin_unlock (&cell->port.lock);
}
}
*dtable = ports;
*dtablePoly = MACH_MSG_TYPE_MOVE_SEND;
*dtableCnt = _hurd_dtablesize;
out:
__mutex_unlock (&_hurd_dtable_lock);
HURD_CRITICAL_END;
return err;
}
/* XXX */
kern_return_t
_S_msg_set_dtable (mach_port_t process,