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// by Anamika The harmonious concert of operations within an operating system is often marred by miscommunications and lags. How do processes within this intricate system speak to each other? Signals, an age-old mechanism in the annals of Unix-like systems, offer a solution. Let’s decode the mysteries of signals and their pivotal role in IPC. …
Shared Memory in IPC: An In-depth Analysis Hello tech enthusiasts! Let’s embark on an analytical journey, exploring the intricacies of Inter-Process Communication (IPC) via Shared Memory. We’ll further dissect the trio that makes it possible: mmap, munmap, and msync. 1. What is Shared Memory? Shared memory is a method of IPC where multiple processes share …
DEMYSTIFYING SHARED MEMORY IN IPC: A DEEP DIVE! 🌊 Read More »
Table of Contents “Socket Programming Essentials in C” is your ultimate guide to gaining the foundational knowledge necessary for proficient network programming. In this blog, we delve into the intricacies of socket programming, exploring key concepts, techniques, and tools essential for building robust network applications using the C programming language sock_common The struct sock_common structure represents a …
connect() static __always_inline int trace_ret_generic(u32 id, struct pt_regs *ctx, u64 types, u32 scope) { if (skip_syscall()) return 0; sys_context_t context = {}; args_t args = {}; if (ctx == NULL) return 0; if (load_args(id, &args) != 0) return 0; init_context(&context); context.event_id = id; context.argnum = get_arg_num(types); context.retval = PT_REGS_RC(ctx); // skip if No such file/directory …
Read IP Function to extract addrress of the socket using connect() system call func readSockaddrFromBuff(buff io.Reader) (map[string]string, error) { res := make(map[string]string, 3) family, err := readInt16FromBuff(buff) if err != nil { return nil, err } res[“sa_family”] = getSocketDomain(uint32(family)) switch family { case 1: // AF_UNIX /* http://man7.org/linux/man-pages/man7/unix.7.html struct sockaddr_un { sa_family_t sun_family; // AF_UNIX …
connect() Table of Contents The connect() system call is a crucial function in Linux that enables processes to establish connections between sockets. By initiating a connection request to a remote host, connect() plays a pivotal role in network communication, allowing programs to connect and exchange data over various types of connections, such as TCP/IP. Understanding the connect() system call is essential …
Table of Contents Interacting with Linux BPF Ring Buffer using Package ringbuf in libbpfgo Introduction Linux BPF (Berkeley Packet Filter) ring buffer is a powerful mechanism that allows userspace programs to interact with custom events submitted by BPF programs. These events can be essential for tasks such as pushing packet samples from BPF to user …
Table of Contents Writing an eBPF Program Using Ringbuf Map with libbpfgo In this blog post, we will explore how to write an eBPF (extended Berkeley Packet Filter) program that utilizes a ringbuf map to transfer data. We will also learn how to process the data stored in the ringbuf map using libbpfgo, a …
Table of Contents The BPF ring buffer provides a flexible and efficient mechanism for data exchange between the Linux kernel and user-space programs. In this section, we will dive into the design and implementation details of the BPF ring buffer, exploring its features and underlying principles. Reserve/Commit Schema for Multiple Producers The BPF ring buffer …
Table of Contents The BPF ring buffer (ringbuf) introduces a new and powerful mechanism for efficient data exchange between the Linux kernel and user-space. As a part of the BPF subsystem, the ring buffer provides a flexible and performant solution for transferring data collected by BPF programs. In this blog post, we will explore the …
