General

The course Linux system programming teaches C programmers the advanced mechanisms of the Linux kernel. This course does not offer a monotonous list of available system calls and library functions, but especially covers the underlying concepts. In this LSP course we discuss subjects like process management (creation and transformation of processes), file access (the conventional way, but also the more advanced way via memory mapping) and directories, and all implementations of interprocess communication (pipes, signals, TCP/UDP sockets, POSIX IPC message queues/shared memory/semaphores).
Furthermore, we extensively discuss the way to develop multithreaded applications with help of the pthread library. This includes subjects like the life cycle of a thread (creation and termination), synchronisation techniques and the recognition of pit falls.

Course attendees receive the following documentation:

Course attendants will receive a student pack containing copies of the presentations, lab exercises, answers to the exercises, and background information.
Shortly after the course the student will receive a certificate as a proof of participation

Objectives

After completing this course, you can use the most advanced possibilities that are offered by the Linux kernel.

Target audience

Experienced programmers and software developers with extensive knowledge of the programming language C and Linux that develop specialized system programs, like daemons or software for embedded applications.
The course material is in English, and the teaching language will be English unless the attendants prefer the Dutch language unanimously.

Voorkennis

Onderstaande voorkennis is vereist:

Knowledge of the programming language C is a must.
At least six months of practical experience with Linux (or another UNIX implementations) is desirable.

Topics

Process management
File I/O
Directory I/O
Device I/O
Pipes

Signals
POSIX IPC
Sockets
Daemonising
POSIX pthreads

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Process management
- Process creation, process transformation and process synchronisation. Influencing scheduling priority. Enquire and modify process limits. Enquire and modify process capabilities. Safe use of setuid bit and capabilities on executable file. System calls: fork, execl, execv, exit, wait, waitpid, sched_setscheduler, nice, setpriority, getrlimit, setrlimit, getpid, getppid, cap_get_proc, cap_set_proc, cap_free, cap_set_flag, getuid, setuid, seteuid.
File I/O
- System calls to create, open, read and write files, and system call to manipulate with the current offset of an opened file. Influence of various options when opening a file. Manipulate with file descriptors. Alternative access on files via memory mapping. Enquire and modify file properties. Monitor modifications on files and directories. File and record locking. System calls: open, creat, close, umask, read, write, lseek, fcntl, dup, mmap, munmap, stat, access, truncate, link, unlink, symlink, readlink, chmod, chown, utime, inotify_init, inotify_add_watch.
Directory I/O
- Enquire file names from directories. Enquire and modify current directory. Create and remove directories. System calls and functions: opendir, readdir, rewinddir, mkdir, rmdir, chdir, getcwd.
Device I/O
- Enquire and modify device properties. I/O multiplexing (monitor multiple file descriptors simultaneously). System calls: ioctl, select.
Pipes
- Setup new pipes. Properties of pipes. Communication via pipes. Pipes with more than one reader and/or writer. Properties and use of named pipes (fifo files) System calls and functions: pipe, mknod, mkfifo.

Signals
- Signal types. Sending conventional signals and realtime signals. Use of timers. Signal handling in a conventional way. Block and release signals by receiveing process (reliable). System calls: kill, signal, pause, alarm, getitimer, setitimer, sigprocmask, sigaction, sigpending, sigsuspend.
POSIX IPC
- Setup and gain access to shared memory segments. Synchronise processes/threads with semaphores. Send en receive messages between processes via message queues. System calls: shm_open, shm_unlink, sem_open, sem_close, sem_unlink, sem_post, sem_wait, sem_post, sem_init, sem_destroy, mq_open, mq_close, mq_send, mq_receive, mq_setattr, mq_getattr.
Sockets
- The socket API. Streams sockets versus datagram sockets. Client-server model. Setup of active socket from client process. Setup of passive socket from server proces. Socket domains and addresses. UNIX domain sockets. TCP/IP sockets (TCP and UDP communication). Translate host names and service names to address info (for IPv4 and for IPv6). Sending broadcasts. System calls and functions: socket, connect, bind, listen, accept, getaddrinfo, recvfrom, sendto.
Daemonising
- Relations between processes (sessions, process groups, controlling tty). Sequence of actions that allow permanently active processes to run autonomously. System calls and functions: getsid, setsid, getpgrp, setpgid.
POSIX pthreads
- Thread model used by Linux (tasks, thread group). Thread creation and termination (voluntary or forced). Synchronisation of threads with help of mutexes and condition variables. Use of global variables. Use of thread-safe system calls and functions. Attributes of a thread. Per-thread variables. Threads and signals. Consequences for specific Linux system calls. System calls and functions: clone, pthread_create, pthread_self, pthread_equal, pthread_exit, pthread_cancel, pthread_setcancelstate, pthread_testcancel, pthread_join, pthread_detach, pthread_mutex_lock, pthread_mutex_unlock, pthread_mutex_trylock, pthread_cond_wait, pthread_cond_timedwait, pthread_cond_signal, pthread_cond_broadcast, pthread_attr_…, pthread_sigmask, pthread_cleanup_push, pthread_cleanup_pop, pthread_key_create, pthread_key_getspecific, pthread_key_setspecific..

Schedule & Price

* This course event is guaranteed to run.
*A course with falls under the Summer Academy action.

All prices are exclusive of VAT.

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Linux system programming (English course)

General

Objectives

Target audience

Voorkennis

Topics

Schedule & Price

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Categorieën

Onderwerpen

Prijs

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Why would you learn Fortran?

Drie voordelen van het inhuren van een consultant of specialist

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Cursus: Linux system programming (English course)

Cursus: Linux system programming (English course)

Linux system programming (English course)