diff options
Diffstat (limited to 'libmachdev/ds_routines.c')
| -rw-r--r-- | libmachdev/ds_routines.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/libmachdev/ds_routines.c b/libmachdev/ds_routines.c index da5e47e2..53e0c080 100644 --- a/libmachdev/ds_routines.c +++ b/libmachdev/ds_routines.c @@ -65,6 +65,7 @@ #include <hurd.h> #include <mach.h> +#include <device/device.h> /* fallback to kernel device */ #include "device_S.h" #include "notify_S.h" @@ -94,7 +95,8 @@ ds_device_open (mach_port_t open_port, mach_port_t reply_port, char *name, device_t *devp, mach_msg_type_name_t *devicePoly) { int i; - io_return_t err; + mach_port_t dev_master; + io_return_t err = D_NO_SUCH_DEVICE; /* Open must be called on the master device port. */ if (!machdev_is_master_device (open_port)) @@ -108,11 +110,18 @@ ds_device_open (mach_port_t open_port, mach_port_t reply_port, for (i = 0; i < num_emul; i++) { err = (*emulation_list[i]->open) (reply_port, reply_port_type, - mode, name, devp, devicePoly); + mode, name, devp, devicePoly); if (err != D_NO_SUCH_DEVICE) - break; + break; } + /* Fall back to opening kernel device master */ + if (err) + { + get_privileged_ports(NULL, &dev_master); + err = device_open (dev_master, mode, name, devp); + *devicePoly = MACH_MSG_TYPE_MOVE_SEND; + } return err; } |