Changeset 84afc7b in mainline for uspace/lib/libc

Timestamp:

2009-03-18T10:53:12Z (17 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

e749794

Parents:

8015eeec

Message:

as kernel little brother drivers are not needed anymore, the device numbers do not have to be correlated between kernel and uspace in any way
introduce new syscall sys_device_assign_devno() for generating system-wide unique device numbers for uspace

Location:

uspace/lib/libc

Files:

• generic/ddi.c (modified) (1 diff)
• include/ddi.h (modified) (1 diff)

uspace/lib/libc/generic/ddi.c

@@ -41 +41 @@
 #include <libarch/config.h>
 #include <kernel/ddi/ddi_arg.h>
+
+/** Return unique device number.
+ *
+ * @return New unique device number.
+ *
+ */
+int device_assign_devno(void)
+{
+        return __SYSCALL0(SYS_DEVICE_ASSIGN_DEVNO);
+}
 
 /** Map piece of physical memory to task.

uspace/lib/libc/include/ddi.h

@@ -38 +38 @@
 #include <task.h>
 
+extern int device_assign_devno(void);
 extern int physmem_map(void *, void *, unsigned long, int);
 extern int iospace_enable(task_id_t, void *, unsigned long);