/**
 * @file arp.c
 * @brief Display the ARP table.
 *
 * Reads the ARP cache from /sys/arp/table and displays it.
 *
 * Usage:
 *   arp       - Show the ARP table
 */

#include "syscalls.h"

int main(void) {
    /* Open the ARP table sysfs file */
    int32_t fd = open("/sys/arp/table", 0);
    if (fd < 0) {
        puts("arp: failed to open /sys/arp/table\n");
        return 1;
    }

    /* Read and display contents */
    char buf[512];
    int32_t n;
    while ((n = read(fd, buf, sizeof(buf))) > 0) {
        write(1, buf, (uint32_t)n);
    }

    close(fd);
    return 0;
}