home *** CD-ROM | disk | FTP | other *** search
Text File | 1991-04-23 | 28.7 KB | 1,153 lines |
- /*
- * socket.c --
- *
- * Routines to emulate 4.3 BSD socket-related system calls for IPC
- * using the Internet protocol suite. The routines make calls to
- * the Sprite Internet Server using Sprite system calls.
- *
- * Copyright 1987 Regents of the University of California
- * All rights reserved.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/socket.c,v 1.11 89/09/12 11:43:48 nelson Exp Locker: shirriff $ SPRITE (Berkeley)";
- #endif not lint
-
- #include <sprite.h>
- #include <bit.h>
- #include <dev/net.h>
- #include <fs.h>
- #include <inet.h>
- #include <status.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <sys.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <sys/uio.h>
- #include <netinet/in.h>
- #include <errno.h>
-
- #include "compatInt.h"
-
- static ReturnStatus Wait();
-
- #ifdef DEBUG
- # define DebugMsg(status, string) Stat_PrintMsg(status, string)
- #else
- # define DebugMsg(status, string) ;
- #endif
-
- static Boolean gotHostName = FALSE;
- static char myHostName[100];
- static char streamDevice[100];
- static char dgramDevice[100];
- static char rawDevice[100];
-
-
- /*
- *----------------------------------------------------------------------
- *
- * accept --
- *
- * Accept a stream connection request. This call will create a new
- * connection to the Inet server upon notification that a remote
- * connection request is pending.
- *
- * If the socket is non-blocking and no remote connection requests are
- * pending, EWOULDBLOCK is returned. If the socket is blockable,
- * this routine will wait until a remote connection request arrives.
- *
- * Results:
- * If > 0, the stream ID of the new connection.
- * If UNIX_ERROR, errno =
- * EINVAL - Bad size for *namePtr.
- * EWOULDBLOCK - Non pending requests.
- *
- * Side effects:
- * A new stream is created.
- *
- *----------------------------------------------------------------------
- */
-
- int
- accept(socketID, addrPtr, addrLenPtr)
- int socketID; /* Socket to listen on. */
- struct sockaddr_in *addrPtr; /* Address of newly-accepted
- * connection. (out) */
- int *addrLenPtr; /* Size of *addrPtr. (in/out) */
- {
- ReturnStatus status;
- int newSocket;
- ClientData acceptToken;
- int addrLen;
-
- if (addrLenPtr == (int *) NULL) {
- addrLen = 0;
- addrPtr = (struct sockaddr_in *) NULL;
- } else {
- /*
- * We deal with just Internet sockets.
- */
-
- addrLen = *addrLenPtr;
- if (addrLen != sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
- }
-
-
- /*
- * Tell the Inet server to accept connections on the socket. If a
- * connection is made, a token is returned that is used to convert the
- * connection into a new socket. If no connections are currently
- * available and the socket is non-blocking, FS_WOULD_BLOCK is
- * returned. If the socket is blockable, the ioctl returns
- * NET_NO_CONNECTS so and Wait() must be used to wait for a
- * connection.
- */
-
- status = Fs_IOControl(socketID, IOC_NET_ACCEPT_CONN_1,
- 0, (Address) NULL,
- sizeof(acceptToken), (Address) &acceptToken);
-
- switch (status) {
- case SUCCESS:
- break;
-
- case FS_WOULD_BLOCK:
- errno = EWOULDBLOCK;
- return(UNIX_ERROR);
- break;
-
- case NET_NO_CONNECTS:
- /*
- * Wait for the server to tell us that a request has arrived.
- */
- (void) Wait(socketID, TRUE, (Time *) NULL);
-
- /*
- * There's a pending connection so retry the ioctl.
- */
- status = Fs_IOControl(socketID, IOC_NET_ACCEPT_CONN_1,
- 0, (Address) NULL,
- sizeof(acceptToken), (Address) &acceptToken);
- if (status != SUCCESS) {
- DebugMsg(status, "accept (ioctl 1b)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- break;
-
- default:
- DebugMsg(status, "accept (ioctl 1a)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- break;
- }
-
-
- /*
- * Create the new socket. This socket will be converted into the new
- * connection.
- */
-
- status = Fs_Open(streamDevice, FS_READ|FS_WRITE, 0666, &newSocket);
- if (status != SUCCESS) {
-
- DebugMsg(status, "accept (open)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
-
- /*
- * Make the new socket have the same characteristics as the
- * connection socket. Also, find out who we are connected to.
- */
- status = Fs_IOControl(newSocket, IOC_NET_ACCEPT_CONN_2,
- sizeof(acceptToken), (Address) &acceptToken,
- addrLen, (Address) addrPtr);
-
- if (status != SUCCESS) {
- DebugMsg(status, "accept (ioctl 2)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- if (addrLen > 0) {
- addrPtr->sin_family = AF_INET;
- }
-
- return(newSocket);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * bind --
- *
- * Assigns a local <address,port> tuple to a socket that does
- * not have one.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size for *namePtr, already bound to an address.
- * EADDRINUSE - The address is already in use.
- * EADDRNOTAVAIL - The address is not valid for this host.
- *
- * Side effects:
- * The socket local address is set.
- *
- *----------------------------------------------------------------------
- */
-
- int
- bind(socketID, namePtr, nameLen)
- int socketID; /* Stream ID of unnamed socket. */
- struct sockaddr *namePtr; /* Local address,port for this socket.*/
- int nameLen; /* Size of *namePtr. */
- {
- ReturnStatus status;
-
- if (nameLen != sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- status = Fs_IOControl(socketID, IOC_NET_SET_LOCAL_ADDR,
- nameLen, (Address) namePtr,
- 0, (Address) NULL);
-
- if (status != SUCCESS) {
- DebugMsg(status, "bind");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * connect --
- *
- * For a stream socket, create a connection to a remote host.
- * For a datagram socket, only receive datagrams from this remote
- * address.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size for *namePtr,
- * EADDRINUSE - The address is already in use.
- * EADDRNOTAVAIL - The address is not valid for this host.
- * EISCONN - The socket is already connected.
- * ETIMEDOUT - The connection request timed-out.
- * ECONNREFUSED - The remote host refused the connection.
- * ENETUNREACH - The network isn't reachable from this host.
- * EWOULDBLOCK - If non-blocking, the connection can't be completed
- * immediately.
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * A local address for the socket is given if it did not have one
- * already.
- *
- *----------------------------------------------------------------------
- */
-
- int
- connect(socketID, namePtr, nameLen)
- int socketID; /* Stream ID of socket. */
- struct sockaddr *namePtr; /* Remote address,port to connect to.*/
- int nameLen; /* Size of *namePtr. */
- {
- ReturnStatus status;
-
- if (nameLen != sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- status = Fs_IOControl(socketID, IOC_NET_CONNECT,
- nameLen, (Address) namePtr,
- 0, (Address) NULL);
-
- if (status == FS_WOULD_BLOCK) {
- int flags = 0;
- int statLen = sizeof(status);
-
- /*
- * The connection didn't immeadiately complete, so wait if
- * we're blocking or return EWOULDBLOCK if we're non-blocking.
- */
- status = Fs_IOControl(socketID, IOC_GET_FLAGS,
- 0, (Address) NULL,
- sizeof(flags), (Address) &flags);
-
- if (status != SUCCESS) {
- DebugMsg(status, "connect (ioctl)");
- panic("connect: GET_FLAGS failed.\n");
- }
-
- if (flags & IOC_NON_BLOCKING) {
- errno = EWOULDBLOCK;
- return(UNIX_ERROR);
- }
-
- status = Wait(socketID, FALSE, &time_OneMinute);
-
- if (status == FS_TIMEOUT) {
- DebugMsg(status, "connect (select)");
- errno = ETIMEDOUT;
- return(UNIX_ERROR);
- }
-
- /*
- * See if the connection successfully completed. getsockopt converts
- * the status to its Unix equivalent.
- */
- if (getsockopt(socketID, SOL_SOCKET, SO_ERROR, (char *) &status,
- &statLen) < 0) {
- return(UNIX_ERROR);
- }
- if (status != UNIX_SUCCESS) {
- errno = status;
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
-
- } else if (status != SUCCESS) {
- DebugMsg(status, "connect");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * getpeername --
- *
- * Find out the remote address that this socket is connected to.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size for *namePtr.
- * ENOTCONN - The socket is not connected.
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- getpeername(socketID, namePtr, nameLenPtr)
- int socketID; /* Stream ID of socket connected to
- * remote peer. */
- struct sockaddr *namePtr; /* Upon return, <addr,port> for
- * remote peer. */
- int *nameLenPtr; /* Size of *namePtr. (in/out) */
- {
- ReturnStatus status;
-
- /*
- * Make sure the struct is at least as big as an internet address.
- * It can be bigger because of unions with dec net structures.
- */
- if (nameLenPtr == (int *) NULL ||
- *nameLenPtr < sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
- *nameLenPtr = sizeof(struct sockaddr_in);
-
- status = Fs_IOControl(socketID, IOC_NET_GET_REMOTE_ADDR,
- 0, (Address) NULL,
- *nameLenPtr, (Address) namePtr);
-
- if (status != SUCCESS) {
- DebugMsg(status, "getpeername");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * getsockname --
- *
- * Find out the local address for this socket, which was
- * set with the bind routine or by the connect routine.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size for *namePtr.
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- getsockname(socketID, namePtr, nameLenPtr)
- int socketID; /* Stream ID of socket to get name of.*/
- struct sockaddr *namePtr; /* Upon return, current <addr,port> for
- * this socket. */
- int *nameLenPtr; /* Size of *namePtr. (in/out) */
- {
- ReturnStatus status;
-
- if (nameLenPtr == (int *) NULL ||
- *nameLenPtr != sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- status = Fs_IOControl(socketID, IOC_NET_GET_LOCAL_ADDR,
- 0, (Address) NULL,
- *nameLenPtr, (Address) namePtr);
-
- if (status != SUCCESS) {
- DebugMsg(status, "getsockname");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * getsockopt --
- *
- * Get the value for a socket option.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- getsockopt(socketID, level, optName, optVal, optLenPtr)
- int socketID; /* Stream ID of socket to get options on. */
- int level; /* Socket or protocol level to get the option.*/
- int optName; /* Type of option to get. */
- char *optVal; /* Address of buffer to store the result. */
- int *optLenPtr; /* In: Size of *optVal, out: # of bytes stored
- * in *optVal. */
- {
- ReturnStatus status;
- int optionsArray[2];
-
- /*
- * OptionsArray is used to give the server the values of "level"
- * and "optName". A buffer ("newBufPtr") is needed to get the option
- * value and the length of the value.
- */
- optionsArray[0] = level;
- optionsArray[1] = optName;
-
- status = Fs_IOControl(socketID, IOC_NET_GET_OPTION,
- sizeof(optionsArray), (Address) optionsArray,
- *optLenPtr, (Address) optVal);
-
- if (status != SUCCESS) {
- DebugMsg(status, "getsockopt");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
-
- if (optName == SO_ERROR) {
- /*
- * The error value is a Sprite ReturnStatus so we must convert it
- * to the equivalent Unix value.
- */
-
- *(int *)optVal = Compat_MapCode(*(int *)optVal);
- }
-
- return(UNIX_SUCCESS);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * setsockopt --
- *
- * Set the value for a socket option.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- /*VARARGS (makes lint happy) */
- int
- setsockopt(socketID, level, optName, optVal, optLen)
- int socketID; /* Stream ID of socket to set options on. */
- int level; /* Socket or protocol level to get the option.*/
- int optName; /* Type of option to get. */
- char *optVal; /* Address of buffer to store the result. */
- int optLen; /* Size of *optVal. */
- {
- ReturnStatus status;
- int *newBufPtr;
-
- /*
- * To pass the level, the type of option and the option value to the
- * server, we allocate a new buffer and put the level and type in the
- * first 2 slots and then copy the value to the rest of the buffer.
- */
- newBufPtr = (int *) malloc((unsigned) (2 * sizeof(int) + optLen));
- newBufPtr[0] = level;
- newBufPtr[1] = optName;
- bcopy(optVal, (char *) &newBufPtr[2], optLen);
-
- status = Fs_IOControl(socketID, IOC_NET_SET_OPTION,
- 2 * sizeof(int) + optLen, (Address) newBufPtr,
- 0, (Address) NULL);
-
- free((char *) newBufPtr);
-
- if (status != SUCCESS) {
- DebugMsg(status, "getsockopt");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * listen --
- *
- * Allows a stream socket to accept remote connection requests and to
- * specify how many such requests will be queued up before they
- * are refused.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EOPNOTSUPP - The socket type doesn't allow a listen operation.
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- listen(socketID, backlog)
- int socketID; /* Stream ID of socket to be put in listen mode. */
- int backlog; /* How many connection requests to queue. */
- {
- ReturnStatus status;
-
- status = Fs_IOControl(socketID, IOC_NET_LISTEN,
- sizeof(backlog), (Address) &backlog,
- 0, (Address) NULL);
-
- if (status != SUCCESS) {
- DebugMsg(status, "listen");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * recv --
- *
- * Read data from a connected socket.
- *
- * Results:
- * See recvfrom().
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- recv(socketID, bufPtr, bufSize, flags)
- int socketID;
- char *bufPtr; /* Address of buffer to place the data in. */
- int bufSize; /* Size of *bufPtr. */
- int flags; /* Type of operatrion: OR of MSG_OOB, MSG_PEEK*/
- {
- return(recvfrom(socketID, bufPtr, bufSize, flags,
- (struct sockaddr *) NULL, (int *) NULL));
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * recvfrom --
- *
- * Read data from a socket.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size or address for senderPtr, senderLenPtr.
- * EWOULDBLOCK - If non-blocking, no data are available.
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- recvfrom(socketID, bufPtr, bufSize, flags, senderPtr, senderLenPtr)
- int socketID; /* Socket to read. */
- char *bufPtr; /* Buffer to place the data in. */
- int bufSize; /* Size of *bufPtr. */
- int flags; /* Type of operatrion: OR of
- * MSG_OOB, MSG_PEEK*/
- struct sockaddr *senderPtr; /* Address of sender of the data. */
- int *senderLenPtr; /* Size of *senderPtr. (in/out) */
- {
- ReturnStatus status;
- int amountRead;
-
- if (senderPtr != (struct sockaddr *) NULL) {
- if ((senderLenPtr == (int *) NULL) ||
- (*senderLenPtr != sizeof(struct sockaddr_in))) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
- }
-
- /*
- * If there are flags, ship them to the server.
- */
- if (flags != 0) {
- status = Fs_IOControl(socketID, IOC_NET_RECV_FLAGS,
- sizeof(flags), (Address) &flags,
- 0, (Address) NULL);
- if (status != SUCCESS) {
- DebugMsg(status, "recvfrom (ioctl recv_flags)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
-
- status = Fs_Read(socketID, bufSize, bufPtr, &amountRead);
- if (status != SUCCESS) {
- DebugMsg(status, "recvfrom (read)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
-
- /*
- * If the caller wants the address of the sender, ask the server for it.
- */
- if (senderPtr != (struct sockaddr *) NULL) {
- status = Fs_IOControl(socketID, IOC_NET_RECV_FROM,
- 0, (Address) NULL,
- *senderLenPtr, (Address) senderPtr);
- if (status != SUCCESS) {
- DebugMsg(status, "recvfrom (ioctl get_remote)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
- return(amountRead);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * recvmsg --
- *
- * Read data from a socket using multiple buffers.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size or address for msg_name, msg_namelen;
- * I/O vector length too big.
- * EWOULDBLOCK - If non-blocking, no data are available.
- * EFAULT - Invalid argument to the ioctl, null address
- * for msgPtr.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- recvmsg(socketID, msgPtr, flags)
- int socketID; /* Sokect to read data from. */
- struct msghdr *msgPtr; /* I/O vector of buffers to store the
- * data. */
- int flags; /* Type of operatrion: OR of
- * MSG_OOB, MSG_PEEK*/
- {
- ReturnStatus status;
- int amountRead;
-
-
- if (msgPtr == (struct msghdr *) NULL) {
- errno = EFAULT;
- return(UNIX_ERROR);
- }
-
- if (msgPtr->msg_name != (Address) NULL) {
- if (msgPtr->msg_namelen != sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
- }
-
- if (msgPtr->msg_iovlen > MSG_MAXIOVLEN) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- /*
- * If there are flags, ship them to the server.
- */
- if (flags != 0) {
- status = Fs_IOControl(socketID, IOC_NET_RECV_FLAGS,
- sizeof(flags), (Address) &flags,
- 0, (Address) NULL);
- if (status != SUCCESS) {
- DebugMsg(status, "recvmsg (ioctl recv_flags)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
-
- amountRead = readv(socketID, msgPtr->msg_iov, msgPtr->msg_iovlen);
- if (amountRead < 0) {
- DebugMsg(errno, "recvmsg (readv)");
- }
-
- /*
- * If the caller wants the address of the sender, ask the server for it.
- */
- if (msgPtr->msg_name != (Address) NULL) {
- status = Fs_IOControl(socketID, IOC_NET_RECV_FROM,
- 0, (Address) NULL,
- msgPtr->msg_namelen, (Address) msgPtr->msg_name);
- if (status != SUCCESS) {
- DebugMsg(status, "recvmsg (ioctl recv_from)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
-
- return(amountRead);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * send --
- *
- * Write data to a connected socket.
- *
- * Results:
- * See sendto().
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- send(socketID, bufPtr, bufSize, flags)
- int socketID; /* Socket to send data on. */
- char *bufPtr; /* Address of buffer to send. */
- int bufSize; /* Size of *bufPtr. */
- int flags; /* Type of operatrion: OR of
- * MSG_OOB, MSG_PEEK, MSG_DONTROUTE. */
- {
- return(sendto(socketID, bufPtr, bufSize, flags,(struct sockaddr *)NULL, 0));
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * sendto --
- *
- * Send a message from a socket.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size or address for destPtr, destLen..
- * EWOULDBLOCK - If non-blocking, the server buffers are too
- * full to accept the data.
- * EMSGSIZE - The buffer is too large to be sent in 1 packet.
- * EFAULT - Invalid argument to the ioctl.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- sendto(socketID, bufPtr, bufSize, flags, destPtr, destLen)
- int socketID; /* Socket to send data on. */
- char *bufPtr; /* Address of buffer to send. */
- int bufSize; /* Size of *bufPtr. */
- int flags; /* Type of operatrion: OR of
- * MSG_OOB, MSG_PEEK, MSG_DONTROUTE. */
- struct sockaddr *destPtr; /* Destination to send the data to. */
- int destLen; /* Size of *destPtr. */
- {
- ReturnStatus status;
- int numWritten;
-
- /*
- * If either the flags or a destination are given, send them to the server.
- */
- if ((flags != 0) || (destPtr != (struct sockaddr *) NULL)) {
- Net_SendInfo sendInfo;
-
- if (destPtr != (struct sockaddr *) NULL) {
- if (destLen != sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
- sendInfo.addressValid = TRUE;
- sendInfo.address.inet = *(Net_InetSocketAddr *) destPtr;
- } else {
- sendInfo.addressValid = FALSE;
- }
- sendInfo.flags = flags;
-
- status = Fs_IOControl(socketID, IOC_NET_SEND_INFO,
- sizeof(sendInfo), (Address) &sendInfo,
- 0, (Address) NULL);
- if (status != SUCCESS) {
- DebugMsg(status, "sendto (ioctl)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
-
- status = Fs_Write(socketID, bufSize, bufPtr, &numWritten);
- if (status != SUCCESS) {
- DebugMsg(status, "sendto (write)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(numWritten);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * sendmsg --
- *
- * Send a message from a socket.
- *
- * Results:
- * If 0 - Successful.
- * If UNIX_ERROR, then errno =
- * EINVAL - Bad size or address for msg_name, msg_namelen;
- * I/O vector length too big.
- * EWOULDBLOCK - If non-blocking, the server buffers are too full
- * accept the data.
- * EFAULT - Invalid argument to the ioctl, null address
- * for msgPtr.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- sendmsg(socketID, msgPtr, flags)
- int socketID; /* Socket to send data on. */
- struct msghdr *msgPtr; /* I/O vector of buffers containing
- * data to send. */
- int flags; /* Type of operatrion: OR of
- * MSG_OOB, MSG_PEEK, MSG_DONTROUTE. */
- {
- ReturnStatus status;
- int numWritten;
-
- if (msgPtr == (struct msghdr *) NULL) {
- errno = EFAULT;
- return(UNIX_ERROR);
- }
-
- if (msgPtr->msg_iovlen > MSG_MAXIOVLEN) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- if ((flags != 0) || (msgPtr->msg_name != (Address) NULL)) {
- Net_SendInfo sendInfo;
-
- if (msgPtr->msg_name != (Address) NULL) {
- if (msgPtr->msg_namelen != sizeof(struct sockaddr_in)) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
- sendInfo.addressValid = TRUE;
- sendInfo.address.inet = *(Net_InetSocketAddr *)msgPtr->msg_name;
- } else {
- sendInfo.addressValid = FALSE;
- }
- sendInfo.flags = flags;
-
- status = Fs_IOControl(socketID, IOC_NET_SEND_INFO,
- sizeof(sendInfo), (Address) &sendInfo,
- 0, (Address) NULL);
-
- if (status != SUCCESS) {
- DebugMsg(status, "sendmsg (ioctl)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
-
- numWritten = writev(socketID, msgPtr->msg_iov, msgPtr->msg_iovlen);
- if (numWritten < 0) {
- DebugMsg(errno, "sendmsg (writev)");
- }
- return(numWritten);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * socket --
- *
- * Create a socket in the Internet domain.
- *
- * Results:
- * If > 0, the stream ID of the new socket.
- * If UNIX_ERROR, then errno =
- * EINVAL - "domain" did not specify the Internet domain.
- * ? - Error from Fs_Open, Fs_IOControl.
- *
- * Side effects:
- * A new stream is created.
- *
- *----------------------------------------------------------------------
- */
-
- int
- socket(domain, type, protocol)
- int domain; /* Type of communications domain */
- int type; /* Type of socket: SOCK_STREAM, SOCK_DGRAM, SOCK_RAW. */
- int protocol; /* Specific protocol to use. */
- {
- ReturnStatus status;
- int streamID;
-
- if (domain != PF_INET) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- if (!gotHostName) {
- gotHostName = TRUE;
- if (gethostname(myHostName, sizeof(myHostName)) != 0) {
- panic("socket: Can't find my hostname\n");
- }
- sprintf(streamDevice, INET_STREAM_NAME_FORMAT, myHostName);
- sprintf(dgramDevice, INET_DGRAM_NAME_FORMAT, myHostName);
- sprintf(rawDevice, INET_RAW_NAME_FORMAT, myHostName);
- }
-
- if (type == SOCK_STREAM) {
- status = Fs_Open(streamDevice, FS_READ|FS_WRITE, 0666, &streamID);
- if (status != SUCCESS) {
- DebugMsg(status, "socket (stream)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- } else if (type == SOCK_DGRAM) {
- status = Fs_Open(dgramDevice, FS_READ|FS_WRITE, 0666, &streamID);
- if (status != SUCCESS) {
- DebugMsg(status, "socket (datagram)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- } else if (type == SOCK_RAW) {
- status = Fs_Open(rawDevice, FS_READ|FS_WRITE, 0666, &streamID);
- if (status != SUCCESS) {
- DebugMsg(status, "socket (raw)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- } else {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- if (protocol != 0) {
- status = Fs_IOControl(streamID, IOC_NET_SET_PROTOCOL,
- sizeof(protocol), (Address) &protocol,
- 0, (Address) NULL);
- if (status != SUCCESS) {
- DebugMsg(status, "socket (ioctl)");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
-
- return(streamID);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * shutdown --
- *
- * Shut down part of a full-duplex connection.
- *
- * Results:
- * 0 - The action was successful.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- shutdown(socketID, action)
- int socketID; /* Socket to shut down. */
- int action; /* 0 -> disallow further recvs,
- * 1 -> disallow further sends,
- * 2 -> combination of above. */
- {
- ReturnStatus status;
-
- status = Fs_IOControl(socketID, IOC_NET_SHUTDOWN,
- sizeof(action), (Address) &action,
- 0, (Address) NULL);
-
- if (status != SUCCESS) {
- DebugMsg(status, "shutdown");
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- return(UNIX_SUCCESS);
- }
-
-
- /*
- *----------------------------------------------------------------------
- *
- * Wait --
- *
- * Wait for the Inet server to indicate that a socket is ready
- * for some action.
- *
- * Results:
- * SUCCESS, or FS_TIMEOUT if a timeout occurred.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static ReturnStatus
- Wait(socketID, readSelect, timeOutPtr)
- int socketID; /* Socket to wait on. */
- Boolean readSelect; /* If TRUE, select for reading, else select for
- * writing. */
- Time *timeOutPtr; /* Timeout to use for select. */
- {
- ReturnStatus status;
- int numReady;
-
- /*
- * Wait until the Inet server indicates the socket is ready.
- */
-
- if (socketID < 32) {
- int mask;
-
- mask = 1 << socketID;
- if (readSelect) {
- status = Fs_Select(socketID, timeOutPtr, &mask,
- (int *) NULL, (int *) NULL, &numReady);
- } else {
- status = Fs_Select(socketID, timeOutPtr, (int *) NULL,
- &mask, (int *) NULL, &numReady);
- }
- } else {
- int *maskPtr;
-
- Bit_Alloc(socketID, maskPtr);
- Bit_Set(socketID, maskPtr);
-
- if (readSelect) {
- status = Fs_Select(socketID, timeOutPtr, maskPtr,
- (int *) NULL, (int *) NULL, &numReady);
- } else {
- status = Fs_Select(socketID, timeOutPtr, (int *) NULL,
- maskPtr, (int *) NULL, &numReady);
- }
- free((char *) maskPtr);
- }
-
- if (status == FS_TIMEOUT) {
- return(status);
- } else if (status != SUCCESS) {
- Stat_PrintMsg(status, "Wait (socket.c)");
- panic("Wait (socket.c): Fs_Select failed.\n");
- }
-
- if (numReady != 1) {
- /*
- * This is a hack around a kernel bug 12/15/90 that should go away soon.
- * The problem is that Fs_Select returns SUCCESS, when it means TIMEOUT.
- * The way to distinguish this is by numReady != 1.
- */
- #if 1
- return(FS_TIMEOUT);
- #else
- panic("Wait (socket.c): Fs_Select returned %d ready\n",
- numReady);
- #endif
- }
-
- return(SUCCESS);
- }
-