syscall

¶Errno = fn()source

¶SetErrno = fn(err)source

¶Strerror = fn(err)source

Strerror returns the message of an errno value.

¶Error = fn(what)source

Error builds an error for a failed call, with the message of the errno.

¶O_RDONLY = 0x0000valuesource

open() flags - Linux/macOS values (POSIX)

¶O_WRONLY = 0x0001valuesource

¶O_RDWR = 0x0002valuesource

¶O_CREAT = 0x0040valuesource

¶O_EXCL = 0x0080valuesource

¶O_TRUNC = 0x0200valuesource

¶O_APPEND = 0x0400valuesource

¶O_NONBLOCK = 0x0800valuesource

¶O_SYNC = 0x1000valuesource

¶S_IRWXU = 0x01C0valuesource

File permissions

¶S_IRUSR = 0x0100valuesource

¶S_IWUSR = 0x0080valuesource

¶S_IXUSR = 0x0040valuesource

¶S_IRWXG = 0x0038valuesource

¶S_IRGRP = 0x0020valuesource

¶S_IWGRP = 0x0010valuesource

¶S_IXGRP = 0x0008valuesource

¶S_IRWXO = 0x0007valuesource

¶S_IROTH = 0x0004valuesource

¶S_IWOTH = 0x0002valuesource

¶S_IXOTH = 0x0001valuesource

¶SEEK_SET = 0valuesource

lseek() whence

¶SEEK_CUR = 1valuesource

¶SEEK_END = 2valuesource

¶F_OK = 0valuesource

access() mode

¶X_OK = 1valuesource

¶W_OK = 2valuesource

¶R_OK = 4valuesource

¶AF_INET = 2valuesource

Address families

¶AF_INET6 = 10valuesource

¶AF_UNIX = 1valuesource

¶SOCK_STREAM = 1valuesource

Socket types

¶SOCK_DGRAM = 2valuesource

¶SOCK_RAW = 3valuesource

¶IPPROTO_IP = 0valuesource

Protocols

¶IPPROTO_TCP = 6valuesource

¶IPPROTO_UDP = 17valuesource

¶SOL_SOCKET = 1valuesource

Socket options - level

¶SO_REUSEADDR = 2valuesource

Socket options - names

¶SO_REUSEPORT = 15valuesource

¶SO_KEEPALIVE = 9valuesource

¶SO_BROADCAST = 6valuesource

¶SO_LINGER = 13valuesource

¶SO_RCVBUF = 8valuesource

¶SO_SNDBUF = 7valuesource

¶SO_RCVTIMEO = 20valuesource

¶SO_SNDTIMEO = 21valuesource

¶SHUT_RD = 0valuesource

shutdown() how

¶SHUT_WR = 1valuesource

¶SHUT_RDWR = 2valuesource

¶SOMAXCONN = 128valuesource

Listen backlog

¶Open = fn(path, flags, mode)source

¶Close = fn(fd)source

¶Read = fn(fd, buf, count)source

¶Write = fn(fd, buf, count)source

¶Lseek = fn(fd, offset, whence)source

¶Unlink = fn(path)source

¶Mkdir = fn(path, mode)source

¶Rmdir = fn(path)source

¶Chmod = fn(path, mode)source

¶Access = fn(path, mode)source

¶Socket = fn(domain, socktype, protocol)source

¶Bind = fn(sockfd, addr, addrlen)source

¶Listen = fn(sockfd, backlog)source

¶Accept = fn(sockfd, addr, addrlen)source

¶Getsockname = fn(sockfd, addr, addrlen)source

¶Connect = fn(sockfd, addr, addrlen)source

¶Send = fn(sockfd, buf, len, flags)source

¶Recv = fn(sockfd, buf, len, flags)source

¶Sendto = fn(sockfd, buf, len, flags, dest_addr, addrlen)source

¶Recvfrom = fn(sockfd, buf, len, flags, src_addr, addrlen)source

¶Setsockopt = fn(sockfd, level, optname, optval, optlen)source

¶Getsockopt = fn(sockfd, level, optname, optval, optlen)source

¶Shutdown = fn(sockfd, how)source

¶Htons = fn(hostshort)source

¶Ntohs = fn(netshort)source

¶Htonl = fn(hostlong)source

¶Ntohl = fn(netlong)source

¶InetAddr = fn(cp)source

¶SockaddrInSize = fn()source

SockaddrInSize is the length of a sockaddr_in.

¶SockaddrIn = fn(ip, port)source

SockaddrIn returns a sockaddr_in filled for ip:port, ready for Bind, Connect and Sendto. An empty ip means "any address".

¶SockaddrPort = fn(sa)source

SockaddrPort returns the port stored in a sockaddr_in.

¶SockaddrIP = fn(sa)source

SockaddrIP returns the dotted address stored in a sockaddr_in.

¶Int32 = fn(n)source

Int32 returns the bytes of a native int32, for the calls that want a pointer to one.

¶Timeval = fn(ms)source

Timeval returns the bytes of a struct timeval of ms milliseconds, for the timeout options of setsockopt.

¶TimeUnix = fn()source

TimeUnix returns the wall clock time in seconds since the Unix epoch.

¶TimeMillis = fn()source

TimeMillis returns the wall clock time in milliseconds.

¶TimeMono = fn()source

TimeMono returns a monotonic timestamp in milliseconds.

¶SleepMillis = fn(ms)source

SleepMillis pauses the current tau routine for ms milliseconds.

¶Getenv = fn(name)source

Getenv returns the value of the variable name, or null when it isn't set.

¶Setenv = fn(name, value)source

Setenv sets the variable name to value, overwriting what was there.

¶Unsetenv = fn(name)source

Unsetenv removes the variable name.

¶S_IFMT = 0170000valuesource

The bits of a file mode, as returned by StatMode.

¶S_IFDIR = 0040000valuesource

¶S_IFREG = 0100000valuesource

¶S_IFLNK = 0120000valuesource

¶StatSize = fn(path)source

StatSize returns the size of the file at path in bytes.

¶StatMode = fn(path)source

StatMode returns the mode of the file at path, permissions and type.

¶StatMtime = fn(path)source

StatMtime returns when the file at path was last modified, in seconds since the Unix epoch.

¶StatIsDir = fn(path)source

StatIsDir reports whether path is a directory.

¶Rename = fn(from, to)source

¶Getwd = fn()source

Getwd returns the working directory.

¶Chdir = fn(path)source

¶Readdirnames = fn(path)source

Readdirnames returns the names inside the directory at path, "." and ".." included, the way the system hands them over.

¶TzOffset = fn(sec)source

TzOffset returns the seconds between local time and UTC at the instant sec, daylight saving included.

¶TzName = fn(sec)source

TzName returns the abbreviation of the local zone at the instant sec.

¶Spawn = fn(blob, nargs, input, out, flags)source

Spawn runs a program and waits for it. blob holds the program and its arguments one after the other, each one ended by a zero byte, and nargs says how many there are. What the program writes on its standard output is copied into out, and the return value is how many bytes it wrote in all: more than len(out) means the rest was thrown away.

input is written to the standard input of the program, or null for nothing. The flags are 1 to fold standard error into the output and 2 to leave both alone, inherited from this process.

The exit status is read with SpawnStatus after the call. See the exec module for the usual way to reach all this.

¶SpawnStatus = fn()source

SpawnStatus is the exit status of the last Spawn: what the program passed to exit, or 128 plus the signal that killed it, or 127 when it wasn't found.