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2001-11-09 Roland McGrath <roland@frob.com>

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* hurd/privports.c (__get_privileged_ports):
	Only contact the proc server if necessary for this call.
	Suggested by Neal H Walfield <neal@cs.uml.edu>.
	Check error return for mach_port_mod_refs.
This commit is contained in:
Roland McGrath 2001-11-10 00:11:33 +00:00
parent 7fd52cc83c
commit 377f22d8ec
1 changed files with 14 additions and 5 deletions
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19
hurd/privports.c
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@ -28,7 +28,8 @@ kern_return_t
__get_privileged_ports (host_priv_t *host_priv_ptr,
device_t *device_master_ptr)
{
if (! _hurd_host_priv)
if ((host_priv_ptr && _hurd_host_priv == MACH_PORT_NULL)
|| (device_master_ptr && _hurd_device_master == MACH_PORT_NULL))
{
error_t err;
@ -47,16 +48,24 @@ __get_privileged_ports (host_priv_t *host_priv_ptr,
if (host_priv_ptr)
{
__mach_port_mod_refs (mach_task_self (),
_hurd_host_priv, MACH_PORT_RIGHT_SEND, 1);
error_t err = _hurd_host_priv == MACH_PORT_NULL ? 0
: __mach_port_mod_refs (mach_task_self (),
_hurd_host_priv, MACH_PORT_RIGHT_SEND, +1);
if (err)
return err;
*host_priv_ptr = _hurd_host_priv;
}
if (device_master_ptr)
{
__mach_port_mod_refs (mach_task_self (),
_hurd_device_master, MACH_PORT_RIGHT_SEND, 1);
error_t err = _hurd_device_master == MACH_PORT_NULL ? 0
: __mach_port_mod_refs (mach_task_self (),
_hurd_device_master, MACH_PORT_RIGHT_SEND, +1);
if (err)
return err;
*device_master_ptr = _hurd_device_master;
}
return KERN_SUCCESS;
}
weak_alias (__get_privileged_ports, get_privileged_ports)