150 lines
3.4 KiB
C
Executable File
150 lines
3.4 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)getsockopt.c 1.9 93/09/30 SMI" /* SVr4.0 1.5 */
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/*
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* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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* PROPRIETARY NOTICE (Combined)
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*
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* This source code is unpublished proprietary information
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* constituting, or derived under license from AT&T's UNIX(r) System V.
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* In addition, portions of such source code were derived from Berkeley
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* 4.3 BSD under license from the Regents of the University of
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* California.
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*
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*
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*
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* Copyright Notice
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*
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* Notice of copyright on this source code product does not indicate
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* publication.
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*
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* (c) 1986,1987,1988.1989 Sun Microsystems, Inc
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* (c) 1983,1984,1985,1986,1987,1988,1989 AT&T.
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* All rights reserved.
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*
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*/
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#include "sockmt.h"
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#include <sys/param.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <sys/stream.h>
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#include <sys/ioctl.h>
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#include <stropts.h>
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#include <sys/tihdr.h>
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#include <sys/timod.h>
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#include <sys/socket.h>
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#include <tiuser.h>
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#include <sys/sockmod.h>
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#include <signal.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include "sock.h"
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#pragma weak getsockopt = _getsockopt
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int
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_getsockopt(s, level, optname, optval, optlen)
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register int s;
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register int level;
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register int optname;
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register char *optval;
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register int *optlen;
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{
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register struct T_optmgmt_req *opt_req;
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register struct T_optmgmt_ack *opt_ack;
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register struct _si_user *siptr;
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register int size;
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register struct opthdr *opt;
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char *cbuf;
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int retlen;
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int rval;
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sigset_t mask;
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int didalloc = 0;
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if ((siptr = _s_checkfd(s)) == NULL)
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return (-1);
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MUTEX_LOCK_SIGMASK(&siptr->lock, mask);
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if (level == SOL_SOCKET && optname == SO_TYPE) {
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if (*optlen < sizeof (int)) {
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MUTEX_UNLOCK_SIGMASK(&siptr->lock, mask);
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errno = EINVAL;
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return (-1);
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}
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if (siptr->udata.servtype == T_CLTS)
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*(int *)optval = SOCK_DGRAM;
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else *(int *)optval = SOCK_STREAM;
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*optlen = sizeof (int);
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MUTEX_UNLOCK_SIGMASK(&siptr->lock, mask);
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return (0);
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}
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if (siptr->ctlbuf) {
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cbuf = siptr->ctlbuf;
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siptr->ctlbuf = NULL;
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} else {
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/*
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* siptr->ctlbuf is in use
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* allocate and free after use.
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*/
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if (_s_cbuf_alloc(siptr, &cbuf) < 0)
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return (-1);
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didalloc = 1;
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}
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opt_req = (struct T_optmgmt_req *)cbuf;
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opt_req->PRIM_type = T_OPTMGMT_REQ;
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opt_req->OPT_length = sizeof (*opt) + *optlen;
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opt_req->OPT_offset = sizeof (*opt_req);
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opt_req->MGMT_flags = T_CHECK;
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size = sizeof (*opt_req) + opt_req->OPT_length;
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opt = (struct opthdr *)(cbuf + opt_req->OPT_offset);
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opt->level = level;
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opt->name = optname;
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opt->len = *optlen;
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do {
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rval = _s_do_ioctl(s, cbuf, size, TI_OPTMGMT, &retlen);
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} while (! rval && errno == EINTR);
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if (! rval) {
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goto err_out;
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}
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if (retlen < (sizeof (*opt_ack) + sizeof (*opt))) {
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errno = EPROTO;
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goto err_out;
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}
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opt_ack = (struct T_optmgmt_ack *)cbuf;
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opt = (struct opthdr *)(cbuf + opt_ack->OPT_offset);
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(void) memcpy(optval, (caddr_t)opt + sizeof (*opt), opt->len);
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*optlen = opt->len;
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if (didalloc)
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free(cbuf);
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else
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siptr->ctlbuf = cbuf;
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MUTEX_UNLOCK_SIGMASK(&siptr->lock, mask);
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return (0);
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err_out:
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if (didalloc)
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free(cbuf);
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else
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siptr->ctlbuf = cbuf;
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MUTEX_UNLOCK_SIGMASK(&siptr->lock, mask);
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return (-1);
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}
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