Tài liệu Advanced Linux Programming: 8-Linux System Calls doc

... 188 168 Chapter 8 Linux System Calls The set of Linux system calls forms the most basic interface between programs and the Linux kernel. Each call presents a basic operation or capability. Some system calls ... provided with GNU /Linux systems) wraps Linux system calls with functions so that you can call them easily. Low-level I/O functions such as open and read are e...

Ngày tải lên: 26/01/2014, 07:20

... and File Systems The /proc file system also contains information about the disk drives present in the system and the file systems mounted from them. 7.5.1 File Systems The /proc/filesystems entry ... File System n The third element is the file system type. Currently, most GNU /Linux systems use the ext2 file system for disk drives, but DOS or Windows drives may be mounted with othe...

Ngày tải lên: 26/01/2014, 07:20

... Tools A DEVELOPING CORRECT, FAST C OR C++ GNU /LINUX PROGRAMS requires more than just understanding the GNU /Linux operating system and its system calls. In this appendix, we discuss development ... dynamic memory use include these: n The number of allocation calls (calls to malloc) must exactly match the number of deallocation calls (calls to free). n Reads and writes to the all...

Ngày tải lên: 21/01/2014, 07:20

... of the ext2 file system that’s typically used for GNU /Linux disks. If you try to use lseek-huge to create a file on some other type of file system, such as the fat or vfat file systems used to ... functions. Often there are good reasons to use Linux s low-level I/O functions. Many of these are kernel system calls 2 and provide the most direct access to underlying system capa- bili...

Ngày tải lên: 21/01/2014, 07:20

... following: % man 7 signal Table C.1 Linux Signals Name Description SIGHUP Linux sends a process this signal when it becomes disconnected from a terminal. Many Linux programs use SIGHUP for an ... in /usr/include/sys/signum.h, which is included as part of <signal.h>. For a full list of Linux signals, including a short description of each and the default behavior when the signal...

Ngày tải lên: 21/01/2014, 07:20

... GNU /Linux. The same information can also be found at http://www.newriders.com. n http://www.linuxdoc.org is the home of the Linux Documentation Project. This site is a repository for a wealth of documentation, ... VISIT ON THE INTERNET to learn more about programming for the GNU /Linux system. D.1 General Information n http://www.advancedlinuxprogramming.com is this book’s home on the I...

Ngày tải lên: 21/01/2014, 07:20

... Requirements on Modified Works All modified versions of documents covered by this license, including translations, anthologies, compilations, and partial documents, must meet the following requirements: 1. ... of the original unmodified document must be identified. 5. The original author’s (or authors’) name(s) may not be used to assert or imply endorsement of the resulting document without the...

Ngày tải lên: 21/01/2014, 07:20

... software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance ... reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot im...

Ngày tải lên: 21/01/2014, 07:20

... Info The Info documentation system contains more detailed documentation for many core components of the GNU /Linux system, plus several other programs. Info pages are hypertext documents, similar ... User commands (2) System calls (3) Standard library functions (8) System/ administrative commands The numbers denote man page sections. Linux s man pages come installed on your system;...

Ngày tải lên: 21/01/2014, 07:20

... boundary between the application and the operating system that these realities exhibit themselves.Therefore, when using system calls to access system resources, to perform I/O, or for other pur- poses, ... when the call can fail. System calls can fail in many ways. For example: n The system can run out of resources (or the program can exceed the resource limits enforced by the...

Ngày tải lên: 21/01/2014, 07:20