Download Character drivers by Hyde R. PDF

By Hyde R.

Show description

Read Online or Download Character drivers PDF

Best programming: programming languages books

Test Driven .NET Development with FitNesse

Attempt pushed . internet improvement with FitNesse takes you on a trip in the course of the incredible global of FitNesse, a very good web-based instrument for software program reputation checking out. FitNesse permits software program builders and enterprise humans to construct a shared knowing of the area and is helping produce software program that's certainly healthy for objective.

Information Flow Control for Java: A Comprehensive Approach Based on Path Conditions in Dependence Graphs

Details circulation regulate (IFC) is a method to claim the protection of a given software with appreciate to a given safety coverage. The classical coverage noninterference calls for that public output of a software is probably not stimulated from mystery enter. This paintings leverages a strategy known as application cutting, that's heavily attached to IFC and provides many dimensions for making improvements to research precision, the main strong are direction stipulations.

Essential ASP.NET™ fast : with examples in VB .Net

The way to create dynamic net environments utilizing the ASP . internet framework! The ASP . web framework permits the improvement of dynamic web content, which may interface to numerous database structures. utilizing the visible simple . web language it is possible for you to to start to create your individual net structures conveniently. This fast and functional advent explains: tips to setup an ASP.

Extra resources for Character drivers

Example text

6 The read and write Procedures Since the read and write procedures in the scullc module are nearly identical, it makes sense to discuss these two procedures together in the same section. file structure for the object. The count parameter is the number of bytes to read or write (depending on the procedure). The f_pos parameter is a pointer to the 64-bit file position pointer for the file; usually (but not always) this is the f_pos field of the filp structure; you should, however, never count on this because sometimes f_pos can point at a different variable.

In fact, there is no way for this function to fail, so returning zero in EAX is somewhat redundant. However, by convention functions like this one should return a success/error code in EAX. This code does that to adhere to convention (so you won’t have to remember whether it really returns a value or not). If you prefer, you could easily modify this function so that it also zeros out the data array in the scull_dev data structure. However, since the device driver never allows read/write access to the data beyond the byte indexed by the scull_dev len field, there is really no need to do this.

In fact, there is no way for this function to fail, so returning zero in EAX is somewhat redundant. However, by convention functions like this one should return a success/error code in EAX. This code does that to adhere to convention (so you won’t have to remember whether it really returns a value or not). If you prefer, you could easily modify this function so that it also zeros out the data array in the scull_dev data structure. However, since the device driver never allows read/write access to the data beyond the byte indexed by the scull_dev len field, there is really no need to do this.

Download PDF sample

Rated 4.01 of 5 – based on 7 votes