Changeset 7fcb74c in mainline for uspace/lib/libc

Timestamp:

2009-06-29T16:02:32Z (16 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f49cf64

Parents:

bfd247f

Message:

add support for creating null devices on demand

Location:

uspace/lib/libc

Files:

• generic/devmap.c (modified) (1 diff)
• include/devmap.h (modified) (1 diff)
• include/ipc/devmap.h (modified) (2 diffs)

uspace/lib/libc/generic/devmap.c

@@ -219 +219 @@
 }
 
+int devmap_null_create(void)
+{
+        int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
+        
+        if (phone < 0)
+                return -1;
+        
+        ipcarg_t null_id;
+        int retval = async_req_0_1(phone, DEVMAP_DEVICE_NULL_CREATE, &null_id);
+        if (retval != EOK)
+                return -1;
+        
+        return (int) null_id;
+}
+
+void devmap_null_destroy(int null_id)
+{
+        int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
+        
+        if (phone < 0)
+                return;
+        
+        async_req_1_0(phone, DEVMAP_DEVICE_NULL_DESTROY, (ipcarg_t) null_id);
+}
+
 ipcarg_t devmap_device_get_count(void)
 {

uspace/lib/libc/include/devmap.h

@@ -48 +48 @@
 extern int devmap_device_connect(dev_handle_t, unsigned int);
 
+extern int devmap_null_create(void);
+extern void devmap_null_destroy(int);
+
 extern ipcarg_t devmap_device_get_count(void);
 extern ipcarg_t devmap_device_get_devices(ipcarg_t, dev_desc_t *);

uspace/lib/libc/include/ipc/devmap.h

@@ -29 +29 @@
 /** @addtogroup devmap
  * @{
- */ 
+ */
 
 #ifndef DEVMAP_DEVMAP_H_
@@ -49 +49 @@
         DEVMAP_DEVICE_GET_NAME,
         DEVMAP_DEVICE_GET_HANDLE,
+        DEVMAP_DEVICE_NULL_CREATE,
+        DEVMAP_DEVICE_NULL_DESTROY,
         DEVMAP_DEVICE_GET_COUNT,
         DEVMAP_DEVICE_GET_DEVICES