system call

Listing 5-5 is the user space program designed to execute the system call above.

清单5-5是设计来执行上面系统调用的用户空间程序.

This system call returns a file descriptor.

这个系统调用返回一个文件描述符。

System calls are made by user code running a system call instruction, which causes the system call handler to be entered.

系统调用由运行系统调用指令的用户代码发出，该指令使得用户可以进入系统调用处理程序。

The method to get function descriptor of a system call is different when kernel storage protection keys state is different.

不同的内核存储保护键状态对应获得系统调用函数描述符的不同方法。

The send() system call returns, creating the fourth context switch.

send（）系统调用返回，结果导致了第四次的上下文切换。

This function is a high-level way of opening a file; but, since the only way to open a file in Linux is to use the open() system call, fopen() makes use of open() in its implementation.

该函数是打开文件的高层次方式；但是，因为在Linux中打开文件的唯一方法是使用open（）系统调用，所以fopen（）在其实现中利用open（）。

Step four: the write system call returns, creating our fourth context switch.

步骤四：系统调用返回，导致了第4次上下文切换。

See, that's what I would call a flaw in the system.

瞧？这就是我所说的方案的缺陷。

An Anomaly Detection Model Based on System Call Sequences

一种基于系统调用序列的异常检测模型

Here's an example. Oftentimes, find is helpful for locating a needle in a haystack, such as locating all the uses of a particular system call in a large body of application code.

例如，用户经常使用find在大范围内寻找很小的东西，比如在大量应用程序代码中寻找使用某个系统调用的所有地方。

The Linux device drive is involve with the processor platform, the hardware platform, the bus and the Linux knowledge related kernel, the device drive module run in the kernel state through Linux the system call.

Linux设备驱动涉及到处理器平台、硬件平台、总线和Linux内核的相关知识，设备驱动模块通过Linux系统调用运行在内核态。

Access to files ( input and output ) is handled through Condor's remote system call mechanism.

对文件 ( 输入和输出 ) 的访问通过Condor的远程系统调用机制来控制.

Proper use of complex system call requires careful coordination between the operating system and CPU.

复杂的系统调用需要在操作系统和CPU之间做小心的协调.

A new method is proposed parameter model of detection system by using parameters of system call.

针对上述攻击行为,提出一种基于系统调用参数的入侵检测系统模型.

Step three: the write system call causes a context switch from user mode to kernel mode.

步骤三：系统调用write导致从用户空间到内核空间的上下文切换。

Faults are injected by the ptrace(), a system call of Linux. Also, some valuable experimental data are obtained.

本文针对基于Linux的计算机系统提出了一种软件实现的故障注入方案，它通过Linux的ptrace（）调用实现了故障注入，初步获得了一批有价值的实验数据。

System call which bridges programs and the operating system can be observed to detect whether programs are running in the course of nature or not.

作为应用程序与操作系统的桥梁，系统调用能反映并可被用来检测特定程序是否运行正常。

Also note that the result of the write system call is the number of characters written& in this case, 17 plus one carriage return.

还可以注意到，write系统调用的结果是写入字符的个数数目，在这个示例中为17加上一个回车。

If you have a short in your electrical system, call an electrician.

如果你的线路短路了, 那就叫个电工来.

Finally a prototype of grid message service system with functions of the service registration, publishment and call is implemented, and the implementation processes of WS-Resource programming, the notification mechanism and the information service are described.

最后实现了一个具有服务注册、发布与调用功能的网格信息服务原型系统，并阐明了WS资源的编程、通知机制和信息服务等模块的实现过程。

An example of a library function that does have an associated system call is the fopen() function declared in stdio. h.

有相关系统调用的库函数的一个示例是stdio.h中声明的fopen（）函数。

System Call Entry/ Exit probes ( or syscall probes)

系统调用进入/退出探测（即syscall探测）

In this example, you modify your last script slightly to collect system call data for a single process.

在这个例子中，您稍微修改了上一个脚本，让它收集一个进程的系统调用数据。

Through the system call interface in the DOS call a very detailed menu interface.

通过系统的调用在DOS界面 上调用出非常细致的菜单界面.

Brk: brk() is a very simple system call.

brk：brk（）是一个非常简单的系统调用。

The real-time microkernel we designed includes the following parts: task management, synchronization and communication, memory management, time management, interrupt handling and system call.

设计的实时操作系统内核，包括任务管理、任务间通信、存储管理、时钟管理和异常处理系统调用等部分。

At first, linear prediction technique is employed to extract features from system call sequences of the privileged processes which are used to make up of the character database of those processes, and then the Markov model is founded based on the features;

首先提取特权进程的行为特征，引入时间序列分析技术&用线性预测技术对特权进程产生的系统调用序列提取特征向量来建立正常特征库，并在此基础上建立了马尔可夫模型。

The close system call closes or aborts any pending connections on the socket.

close系统调用可关闭或中止套接字上任何挂起的连接。

This system call sends control code and other data to a specified device.

这个系统调用向指定设备发送控制代码和其他数据。

Any TCP system call that is made is received by the socket layer.

套接字层接收进行的任何TCP系统调用。