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Kernel+LibC+Userland: Start working on an IPv4 socket backend.

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The first userland networking program will be "ping" :^)
This commit is contained in:
Andreas Kling 2019-03-12 15:51:42 +01:00
parent 8e667747f0
commit a017a77442
23 changed files with 374 additions and 3 deletions
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19
LibC/arpa/inet.cpp Normal file
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#include <arpa/inet.h>
#include <stdio.h>
#include <errno.h>
extern "C" {
const char* inet_ntop(int af, const void* src, char* dst, socklen_t len)
{
if (af != AF_INET) {
errno = EAFNOSUPPORT;
return nullptr;
}
auto* bytes = (const unsigned char*)src;
snprintf(dst, len, "%u.%u.%u.%u", bytes[3], bytes[2], bytes[1], bytes[0]);
return (const char*)dst;
}
}

22
LibC/arpa/inet.h Normal file
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#pragma once
#include <sys/cdefs.h>
#include <sys/socket.h>
__BEGIN_DECLS
const char* inet_ntop(int af, const void* src, char* dst, socklen_t);
static inline uint16_t htons(uint16_t hs)
{
uint8_t* s = (uint8_t*)&hs;
return (uint16_t)(s[0] << 8 | s[1]);
}
static inline uint16_t ntohs(uint16_t ns)
{
return htons(ns);
}
__END_DECLS