advanced linux programming mark mitchell jeffrey oldham and alex samuel
Advanced Linux Programming: 11-A Sample GNU/Linux Application
... respon-sibility is to parse command-line options, detect and report command-line errors, and configure and run the server.Listing 11.5 (main.c) Main Server Program and Command-Line Parsing#include ... serverprogram and the server module shared libraries.% ls -l server *.so-rwxr-xr-x 1 samuel samuel 25769 Mar 11 01:15 diskfree.so-rwxr-xr-x 1 samuel samuel 31184 Mar 11 01:15 issue.so-rwxr-xr-x 1 samuel ... descriptor to file descriptors STDOUT_FILENO and STDERR_FILENO, which correspond to standard output and standard error (see Section 2.1.4, “Standard I/O,” in Chapter 2).The file descrip-tors...
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Tài liệu Advanced Linux Programming: A-Other Development Tools pdf
... commands. */while (!error) {printf (“Please enter a command: “);command_letter = getchar ();assert (command_letter != EOF);switch (command_letter) {case ‘a’:fgets (command, sizeof (command), ... operand2;if (empty_stack (*stack))return 0;operand2 = pop_stack (stack);if (empty_stack (*stack))return 0;operand1 = pop_stack (stack);push_stack (stack, (*function) (operand1, operand2));destroy_number ... a binary operator is placed after its operands instead of between them.So, for example, to multiply 6 and 8, you would use 6 8 ì.To multiply 6 and 8 and then add 5to the result, you would use...
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Tài liệu Advanced Linux Programming: B Low-Level I/O docx
... filedescriptor, Linux automatically expands the file to make room for the new data. If youposition a file descriptor beyond the end of a file and then write to it, Linux firstexpands the file ... information.nst_uid and st_gid contain the IDs of the user and group, respectively, to whichthe file belongs. User and group IDs are described in Section 10.1,“Users and Groups.”nst_size ... functions as fputc, fputs, and fwrite to write data to the stream, orfscanf, fgetc, fgets, and fread to read data.With the Linux low-level I/O operations, you use a handle called a file descriptorinstead...
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Tài liệu Advanced Linux Programming: C Table of Signals ppt
... (not a number) instead of raisingSIGFPE.SIGKILL This signal ends a process immediately and cannot be handled.SIGUSR1 This signal is reserved for application use.SIGUSR2 This signal is reserved ... 8, Linux System Calls,” for information aboutsetitimer, a generalized version of alarm.SIGTERM This signal requests that a process terminate.This is the defaultsignal sent by the kill command.SIGCHLD ... kill command.SIGCHLD Linux sends a process this signal when a child process exits. SeeSection 3.4.4,“Cleaning Up Children Asynchronously,” inChapter 3,“Processes.”SIGXCPU Linux sends a process...
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Tài liệu Advanced Linux Programming: D Online Resources pptx
... C++, Objective C, Java, Chill, and Fortran.nhttp://www.gnome.org and http://www.kde.org are the homes of the two mostpopular GNU /Linux windowing environments, Gnome and KDE. If you planto write ... GNU /Linux software, from core system components to moreobscure, specialized applications.mhttp://www.linuxsecurity.com contains information, techniques, and links tosoftware related to GNU /Linux ... about how Linux works, the source code is the best place to look. See also theDocumentation directory for explanation of the kernel internals.nhttp://www.linuxhq.com also distributes Linux kernel...
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Tài liệu Advanced Linux Programming: E Open Publication License doc
... material is permitted.Any publication in standard (paper) book form shall require the citation of theoriginal publisher and author.The publisher and author’s names shall appear on allouter ... that the terms of this license areadhered to and that this license or an incorporation of it by reference (with anyoptions elected by the author(s) and/ or publisher) is displayed in the reproduction.Proper ... Publication License Version 1.0EI. Requirements on Both Unmodified and Modified Versions The Open Publication works may be reproduced and distributed in whole or in part,in any medium, physical or...
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Tài liệu Advanced Linux Programming:F GNU General Public docx
... http://www.gnu.org/copyleft/gpl.html.20 0430 APPF 5/22/01 11:02 AM Page 309 311TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATIONof any warranty; and give any other recipients of the Program a copy of thisLicense ... anappropriate copyright notice and a notice that there is no warranty (orelse, saying that you provide a warranty) and that users may redistributethe program under these conditions, and telling the user ... of that work are not derived from the Program, and can be reasonablyconsidered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when...
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Tài liệu Advanced Linux Programming: 1-Advanced UNIX Programming with Linux pdf
... information and should be the first placeyou turn for help.The man page for a command describes command-line options and arguments, input and output, error codes, configuration, and the like.The ... for most standard commands, system calls, and standard library functions.The man pages are divided into numbered sections; for pro-grammers, the most important are these:(1) User commands(2) ... C or C++ Linux program. In particular, this chapter shows you how to create and modify C and C++ source code, compile that code, and debug the result. If you’realready accustomed to programming...
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Tài liệu Advanced Linux Programming: 2-Writing Good GNU/Linux Software pptx
... from the more advanced features and stick with the basic option structure described.2.1.4 Standard I/OThe standard C library provides standard input and output streams (stdin and stdout,respectively).These ... cout and cin streams in C++) thatprovide console input and output.These features are provided by the C and C++ languages, and they interact with the GNU /Linux system in certain ways. GNU/ Linux ... printf, and other library functions. In theUNIX tradition, use of standard input and output is customary for GNU /Linux pro-grams.This allows the chaining of multiple programs using shell pipes and...
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Tài liệu Advanced Linux Programming: 3-Processes pdf
... a command from within a program, much as if the command had been typed into ashell. In fact, system creates a subprocess running the standard Bourne shell (/bin/sh) and hands the command to ... processed and thus while a signal handler function executes.Therefore, you should avoid performing any I/O operations or calling most library and system functions from signal handlers.A signal handler ... special signal-handler function to respond to the signal. If a signal handler isused, the currently executing program is paused, the signal handler is executed, and, when the signal handler returns,...
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Tài liệu Advanced Linux Programming: 4-Threads docx
... the loop and stores the pointer to the job object innext_job. At this point, Linux happens to interrupt the first thread and schedules thesecond.The second thread also checks job_queue and finding ... Page 63 834.4 Synchronization and Critical SectionsAs suggested by the “np” suffix, the recursive and error-checking mutex kinds are spe-cific to GNU /Linux and are not portable.Therefore, ... mutex 1 and then mutex 2, and thread B happens to lock mutex 2 before mutex 1. In a sufficiently unfortunatescheduling scenario, Linux may schedule thread A long enough to lock mutex 1, and then...
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Tài liệu Advanced Linux Programming: 5-Interprocess Communication pptx
... man page.1For example,S_IRUSR and S_IWUSR specify read and write permissions for the owner of theshared memory segment, and S_IROTH and S_IWOTH specify read and write per-missions for others.For ... 5.4.5,“FIFOs.”5.4.3 Redirecting the Standard Input, Output, and ErrorStreamsFrequently, you’ll want to create a child process and set up one end of a pipe as itsstandard input or standard output. Using the ... to read and write to files.The first program, Listing 5.5, generates a random number and writes itto a memory-mapped file.The second program, Listing 5.6, reads the number, printsit, and replaces...
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Tài liệu Advanced Linux Programming: 6-Mastering Linux ppt
... /dev/random. */if (dev_random_fd == -1) {dev_random_fd = open (“/dev/random”, O_RDONLY);assert (dev_random_fd != -1);}/* Read enough random bytes to fill an integer variable. */next_random_byte ... space while writing to a file.6.5.4 Random Number DevicesThe special devices /dev/random and /dev/urandom provide access to the Linux ker-nel’s built-in random number–generation facility.Most ... askeystrokes and mouse movements, Linux is capable of generating an unpredictablestream of high-quality random numbers.You can access this stream by reading from/dev/random and /dev/urandom.The...
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Tài liệu Advanced Linux Programming: 7-The /proc File System pdf
... 158Chapter 7 The /proc File Systemlrwx 1 samuel samuel 64 Jan 30 01:30 1 -> /dev/pts/2lrwx 1 samuel samuel 64 Jan 30 01:30 2 -> /dev/pts/2lr-x 1 samuel samuel 64 Jan 30 01:30 3 -> /etc/fstabNotice ... second window, and look at the contents of the fd subdirectory for that process.% ls -l /proc/1261/fdtotal 0lrwx 1 samuel samuel 64 Jan 30 01:02 0 -> /dev/pts/4lrwx 1 samuel samuel 64 Jan ... information is the process ID and parentprocess ID, the real and effective user and group IDs, memory usage, and bit masksspecifying which signals are caught, ignored, and blocked.7.3 Hardware...
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Tài liệu Linux Device Drivers-Chapter 11 : kmod and Advanced docx
... modprobe -r run. pre-install module command post-install module command pre-remove module command post-remove module command The first two specify a command to be run either before or after ... requested this way: char and block drivers, filesystems, line disciplines, network protocols, and so on. One example of a driver that benefits from demand loading is the Advanced Linux Sound Architecture ... the configuration file for modprobeand depmod. It is used to configure demand loading and is described in the manpages for the two programs. #include < ;linux/ kmod.h> int request_module(const...
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