sys/darwin/socket_unix.txt

# Copyright 2021 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

# AF_UNIX support.

include <sys/types.h>
include <sys/socket.h>
include <netinet/in.h>

resource sock_unix[sock]

socket$unix(domain const[AF_UNIX], type flags[unix_socket_type], proto const[0]) sock_unix
socketpair$unix(domain const[AF_UNIX], type flags[unix_socket_type], proto const[0], fds ptr[out, unix_pair])
bind$unix(fd sock_unix, addr ptr[in, sockaddr_un], addrlen len[addr])
connect$unix(fd sock_unix, addr ptr[in, sockaddr_un], addrlen len[addr])
accept$unix(fd sock_unix, peer ptr[out, sockaddr_un, opt], peerlen ptr[inout, len[peer, int32]]) sock_unix

sendto$unix(fd sock_unix, buf buffer[in], len len[buf], f flags[send_flags], addr ptr[in, sockaddr_un, opt], addrlen len[addr])
recvfrom$unix(fd sock_unix, buf buffer[out], len len[buf], f flags[recv_flags], addr ptr[in, sockaddr_un, opt], addrlen len[addr])
getsockname$unix(fd sock_unix, addr ptr[out, sockaddr_un], addrlen ptr[inout, len[addr, int32]])
getpeername$unix(fd sock_unix, peer ptr[out, sockaddr_un], peerlen ptr[inout, len[peer, int32]])

unix_socket_type = SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET
unix_socket_family = AF_UNIX, AF_UNSPEC

unix_pair {
	fd0	sock_unix
	fd1	sock_unix
}

sockaddr_un [
	file	sockaddr_un_file
	abs	sockaddr_un_abstract
] [varlen]

sockaddr_un_file {
	len	len[parent, int8]
	family	flags[unix_socket_family, int8]
	path	filename
} [packed]

sockaddr_un_abstract {
	len	len[parent, int8]
	family	flags[unix_socket_family, int8]
	ind	const[0, int8]
	id	proc[20000, 4, int32]
}