Here at 42 we are allowed to use the following functions for this project:
Everything in C++ 98. execve, dup, dup2, pipe, strerror, gai_strerror, errno, dup, dup2, fork, socketpair, htons, htonl, ntohs, ntohl, select, poll, epoll (epoll_create, epoll_ctl, epoll_wait), kqueue (kqueue, kevent),
| Function | Description |
|---|---|
execve() |
Executes a program specified by a filename. |
dup() |
Duplicates an open file descriptor. |
dup2() |
Duplicates an open file descriptor to a specified file descriptor. |
pipe() |
Creates a pipe, a unidirectional data channel. |
strerror() |
Returns a string describing the error code passed in the argument. |
gai_strerror() |
Returns a string describing an error code returned by the getaddrinfo() function. |
errno |
Contains the error code of the last failed function call. |
fork() |
Creates a new process by duplicating the calling process. |
socketpair() |
Creates a pair of connected sockets. |
htons() |
Converts a 16-bit host byte order to network byte order. |
htonl() |
Converts a 32-bit host byte order to network byte order. |
ntohs() |
Converts a 16-bit network byte order to host byte order. |
ntohl() |
Converts a 32-bit network byte order to host byte order. |
select() |
Monitors multiple file descriptors, waiting until one or more of the file descriptors become “ready” for some class of I/O operation. |
poll() |
Polls multiple file descriptors to see if I/O is possible on any of them. |
epoll() |
A scalable I/O event notification interface. |
epoll_create() |
Creates an epoll instance. |
epoll_ctl() |
Controls an epoll instance. |
epoll_wait() |
Waits for events on an epoll instance. |
kqueue() |
A scalable event notification interface. |
kevent() |
Controls the kernel event queue. |
socket() |
Creates an endpoint for communication and returns a file descriptor. |
accept() |
Accepts a new incoming connection on a socket. |
listen() |
Listens for incoming connections on a socket. |
send() |
Sends a message on a socket. |
recv() |
Receives a message from a socket. |
chdir() |
Changes the current working directory. |
bind() |
Binds a socket to an address. |
connect() |
Initiates a connection on a socket. |
getaddrinfo() |
Resolves the domain name into a set of socket addresses. |
freeaddrinfo() |
Frees the memory allocated for the linked list of addrinfo structures. |
setsockopt() |
Sets the socket options. |
getsockname() |
Returns the local address of the socket. |
getprotobyname() |
Returns a pointer to a structure containing the information about the protocol. |
fcntl() |
Performs various operations on file descriptors. |
close() |
Closes a file descriptor. |
read() |
Reads data from a file descriptor. |
write() |
Writes data to a file descriptor. |
waitpid() |
Waits for a specific child process to terminate. |
kill() |
Sends a signal to a process. |
signal() |
Sets a function to handle a signal. |
access() |
Checks the real user’s permissions for the file. |
stat() |
Returns information about a file. |
open() |
Opens a file. |
opendir() |
Opens a directory. |
readdir() |
Reads a directory. |
closedir() |
Closes a directory. |
Some error codes to handle: 400,403,404,405,413,431,408 for timeout