freebsd-dev/sys/compat/linux/linux_socket.h
Dmitry Chagin d5368bf3df Our bsd_to_linux_sockaddr() and linux_to_bsd_sockaddr() functions
alter the userspace sockaddr to convert the format between linux and BSD versions.
That's the minimum 3 of copyin/copyout operations for one syscall.

Also some syscall uses linux_sa_put() and linux_getsockaddr() when load
sockaddr to userspace or from userspace accordingly.

To avoid this chaos, especially converting sockaddr in the userspace,
rewrite these 4 functions to convert sockaddr only in kernel and leave
only 2 of this functions.

Also in order to reduce duplication between MD parts of the Linuxulator put
struct sockaddr conversion functions that are MI out into linux_common module.

PR:		232920
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D20157
2019-05-13 17:48:16 +00:00

245 lines
7.0 KiB
C

/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2000 Assar Westerlund
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_SOCKET_H_
#define _LINUX_SOCKET_H_
/* msg flags in recvfrom/recvmsg */
#define LINUX_MSG_OOB 0x01
#define LINUX_MSG_PEEK 0x02
#define LINUX_MSG_DONTROUTE 0x04
#define LINUX_MSG_CTRUNC 0x08
#define LINUX_MSG_PROXY 0x10
#define LINUX_MSG_TRUNC 0x20
#define LINUX_MSG_DONTWAIT 0x40
#define LINUX_MSG_EOR 0x80
#define LINUX_MSG_WAITALL 0x100
#define LINUX_MSG_FIN 0x200
#define LINUX_MSG_SYN 0x400
#define LINUX_MSG_CONFIRM 0x800
#define LINUX_MSG_RST 0x1000
#define LINUX_MSG_ERRQUEUE 0x2000
#define LINUX_MSG_NOSIGNAL 0x4000
#define LINUX_MSG_WAITFORONE 0x10000
#define LINUX_MSG_CMSG_CLOEXEC 0x40000000
/* Socket-level control message types */
#define LINUX_SCM_RIGHTS 0x01
#define LINUX_SCM_CREDENTIALS 0x02
#define LINUX_SCM_TIMESTAMP 0x1D
struct l_msghdr {
l_uintptr_t msg_name;
l_int msg_namelen;
l_uintptr_t msg_iov;
l_size_t msg_iovlen;
l_uintptr_t msg_control;
l_size_t msg_controllen;
l_uint msg_flags;
};
struct l_mmsghdr {
struct l_msghdr msg_hdr;
l_uint msg_len;
};
struct l_cmsghdr {
l_size_t cmsg_len;
l_int cmsg_level;
l_int cmsg_type;
};
/* Ancillary data object information macros */
#define LINUX_CMSG_ALIGN(len) roundup2(len, sizeof(l_ulong))
#define LINUX_CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + \
LINUX_CMSG_ALIGN(sizeof(struct l_cmsghdr))))
#define LINUX_CMSG_SPACE(len) (LINUX_CMSG_ALIGN(sizeof(struct l_cmsghdr)) + \
LINUX_CMSG_ALIGN(len))
#define LINUX_CMSG_LEN(len) (LINUX_CMSG_ALIGN(sizeof(struct l_cmsghdr)) + \
(len))
#define LINUX_CMSG_FIRSTHDR(msg) \
((msg)->msg_controllen >= \
sizeof(struct l_cmsghdr) ? \
(struct l_cmsghdr *) \
PTRIN((msg)->msg_control) : \
(struct l_cmsghdr *)(NULL))
#define LINUX_CMSG_NXTHDR(msg, cmsg) \
((((char *)(cmsg) + \
LINUX_CMSG_ALIGN((cmsg)->cmsg_len) + \
sizeof(*(cmsg))) > \
(((char *)PTRIN((msg)->msg_control)) + \
(msg)->msg_controllen)) ? \
(struct l_cmsghdr *) NULL : \
(struct l_cmsghdr *)((char *)(cmsg) + \
LINUX_CMSG_ALIGN((cmsg)->cmsg_len)))
#define CMSG_HDRSZ CMSG_LEN(0)
#define L_CMSG_HDRSZ LINUX_CMSG_LEN(0)
/* Supported socket types */
#define LINUX_SOCK_STREAM 1
#define LINUX_SOCK_DGRAM 2
#define LINUX_SOCK_RAW 3
#define LINUX_SOCK_RDM 4
#define LINUX_SOCK_SEQPACKET 5
#define LINUX_SOCK_MAX LINUX_SOCK_SEQPACKET
#define LINUX_SOCK_TYPE_MASK 0xf
/* Flags for socket, socketpair, accept4 */
#define LINUX_SOCK_CLOEXEC LINUX_O_CLOEXEC
#define LINUX_SOCK_NONBLOCK LINUX_O_NONBLOCK
struct l_ucred {
uint32_t pid;
uint32_t uid;
uint32_t gid;
};
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
struct linux_accept_args {
register_t s;
register_t addr;
register_t namelen;
};
int linux_accept(struct thread *td, struct linux_accept_args *args);
/* Operations for socketcall */
#define LINUX_SOCKET 1
#define LINUX_BIND 2
#define LINUX_CONNECT 3
#define LINUX_LISTEN 4
#define LINUX_ACCEPT 5
#define LINUX_GETSOCKNAME 6
#define LINUX_GETPEERNAME 7
#define LINUX_SOCKETPAIR 8
#define LINUX_SEND 9
#define LINUX_RECV 10
#define LINUX_SENDTO 11
#define LINUX_RECVFROM 12
#define LINUX_SHUTDOWN 13
#define LINUX_SETSOCKOPT 14
#define LINUX_GETSOCKOPT 15
#define LINUX_SENDMSG 16
#define LINUX_RECVMSG 17
#define LINUX_ACCEPT4 18
#define LINUX_RECVMMSG 19
#define LINUX_SENDMMSG 20
#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
/* Socket defines */
#define LINUX_SOL_SOCKET 1
#define LINUX_SOL_IP 0
#define LINUX_SOL_TCP 6
#define LINUX_SOL_UDP 17
#define LINUX_SOL_IPV6 41
#define LINUX_SOL_IPX 256
#define LINUX_SOL_AX25 257
#define LINUX_SO_DEBUG 1
#define LINUX_SO_REUSEADDR 2
#define LINUX_SO_TYPE 3
#define LINUX_SO_ERROR 4
#define LINUX_SO_DONTROUTE 5
#define LINUX_SO_BROADCAST 6
#define LINUX_SO_SNDBUF 7
#define LINUX_SO_RCVBUF 8
#define LINUX_SO_KEEPALIVE 9
#define LINUX_SO_OOBINLINE 10
#define LINUX_SO_NO_CHECK 11
#define LINUX_SO_PRIORITY 12
#define LINUX_SO_LINGER 13
#ifndef LINUX_SO_PASSCRED /* powerpc differs */
#define LINUX_SO_PASSCRED 16
#define LINUX_SO_PEERCRED 17
#define LINUX_SO_RCVLOWAT 18
#define LINUX_SO_SNDLOWAT 19
#define LINUX_SO_RCVTIMEO 20
#define LINUX_SO_SNDTIMEO 21
#endif
#define LINUX_SO_TIMESTAMP 29
#define LINUX_SO_ACCEPTCONN 30
/* Socket options */
#define LINUX_IP_TOS 1
#define LINUX_IP_TTL 2
#define LINUX_IP_HDRINCL 3
#define LINUX_IP_OPTIONS 4
#define LINUX_IP_MULTICAST_IF 32
#define LINUX_IP_MULTICAST_TTL 33
#define LINUX_IP_MULTICAST_LOOP 34
#define LINUX_IP_ADD_MEMBERSHIP 35
#define LINUX_IP_DROP_MEMBERSHIP 36
#define LINUX_IPV6_CHECKSUM 7
#define LINUX_IPV6_NEXTHOP 9
#define LINUX_IPV6_UNICAST_HOPS 16
#define LINUX_IPV6_MULTICAST_IF 17
#define LINUX_IPV6_MULTICAST_HOPS 18
#define LINUX_IPV6_MULTICAST_LOOP 19
#define LINUX_IPV6_ADD_MEMBERSHIP 20
#define LINUX_IPV6_DROP_MEMBERSHIP 21
#define LINUX_IPV6_V6ONLY 26
#define LINUX_IPV6_RECVPKTINFO 49
#define LINUX_IPV6_PKTINFO 50
#define LINUX_IPV6_RECVHOPLIMIT 51
#define LINUX_IPV6_HOPLIMIT 52
#define LINUX_IPV6_RECVHOPOPTS 53
#define LINUX_IPV6_HOPOPTS 54
#define LINUX_IPV6_RTHDRDSTOPTS 55
#define LINUX_IPV6_RECVRTHDR 56
#define LINUX_IPV6_RTHDR 57
#define LINUX_IPV6_RECVDSTOPTS 58
#define LINUX_IPV6_DSTOPTS 59
#define LINUX_IPV6_RECVPATHMTU 60
#define LINUX_IPV6_PATHMTU 61
#define LINUX_IPV6_DONTFRAG 62
#define LINUX_TCP_NODELAY 1
#define LINUX_TCP_MAXSEG 2
#define LINUX_TCP_KEEPIDLE 4
#define LINUX_TCP_KEEPINTVL 5
#define LINUX_TCP_KEEPCNT 6
#define LINUX_TCP_MD5SIG 14
#endif /* _LINUX_SOCKET_H_ */