Conventions Used in this Book This book uses the following typographical conventions to emphasize various elements of the Linux kernel, source texts, and other things. Functions A gray bar denotes important functions. A bar describes the function name on the left and the file name (within the kernel's source-code tree) on the right. When giving a function name in such a place and throughout the body of this book, we normally leave out the parameters, because they would take up much space and impair the readability and text flow. In general, when introducing a function, we describe the entire parameter set and give a brief description. The variable type is normally left out. For example, the description of the function int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt) from the file net/ipv4/ip_input.c is denoted as follows: ip_rcv() | net/ipv4/ip_input.c |
Throughout the body of this book, we would then refer to this function as ip_rcv() or ip_rcv(skb, dev, pt). Variables, Function Names, Source Text Excerpts, and so on A sans-serif font is used for excerpts from the source code, variable and function names, and other keywords referred to in the text. Commands, Program Names, and so on A sans-serif font is used for the names of programs and command-line tools. Parameters that should be passed unchanged are also printed in sans-serif; those parameters that have to be replaced by values are printed in sans-serif italic. Direct input in the command line is often denoted by a leading shell prompt for example, Files, Directories, Web Links, and so on A sans-serif font is used for files and directories. We generally give the relative path in the kernel source code for files of the Linux kernel (e.g., net/ivp4/ip_input.c). Web links are also printed in sans-serif font (e.g., http://www.Linux-netzwerkarchitektur.de). Other Conventions Italic text denotes emphasis, or an introduction to a key term or concept. |
