302 lines
6.6 KiB
C
302 lines
6.6 KiB
C
/* $NetBSD: svr4_net.c,v 1.13 1997/11/16 22:50:57 christos Exp $ */
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/*
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* Copyright (c) 1994 Christos Zoulas
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* Copyright (c) 1997 Todd Vierling
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Emulate /dev/{udp,tcp,...}
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/fcntl.h>
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#include <sys/select.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <sys/mount.h>
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#include <sys/syscallargs.h>
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#include <compat/svr4/svr4_types.h>
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#include <compat/svr4/svr4_util.h>
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#include <compat/svr4/svr4_signal.h>
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#include <compat/svr4/svr4_syscallargs.h>
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#include <compat/svr4/svr4_ioctl.h>
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#include <compat/svr4/svr4_stropts.h>
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#include <compat/svr4/svr4_socket.h>
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/*
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* Device minor numbers
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*/
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enum {
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dev_ptm = 10,
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dev_arp = 26,
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dev_icmp = 27,
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dev_ip = 28,
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dev_tcp = 35,
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dev_udp = 36,
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dev_rawip = 37,
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dev_unix_dgram = 38,
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dev_unix_stream = 39,
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dev_unix_ord_stream = 40
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};
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int svr4_netattach __P((int));
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static int svr4_soo_close __P((struct file *, struct proc *));
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static int svr4_ptm_alloc __P((struct proc *));
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static struct fileops svr4_netops = {
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soo_read, soo_write, soo_ioctl, soo_poll, svr4_soo_close
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};
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/*
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* Used by new config, but we don't need it.
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*/
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int
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svr4_netattach(n)
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int n;
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{
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return 0;
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}
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int
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svr4_netopen(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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int type, protocol;
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int fd;
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struct file *fp;
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struct socket *so;
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int error;
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int family;
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DPRINTF(("netopen("));
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if (p->p_dupfd >= 0)
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return ENODEV;
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switch (minor(dev)) {
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case dev_udp:
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family = AF_INET;
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type = SOCK_DGRAM;
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protocol = IPPROTO_UDP;
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DPRINTF(("udp, "));
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break;
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case dev_tcp:
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family = AF_INET;
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type = SOCK_STREAM;
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protocol = IPPROTO_TCP;
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DPRINTF(("tcp, "));
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break;
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case dev_ip:
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case dev_rawip:
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family = AF_INET;
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type = SOCK_RAW;
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protocol = IPPROTO_IP;
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DPRINTF(("ip, "));
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break;
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case dev_icmp:
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family = AF_INET;
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type = SOCK_RAW;
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protocol = IPPROTO_ICMP;
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DPRINTF(("icmp, "));
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break;
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case dev_unix_dgram:
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family = AF_UNIX;
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type = SOCK_DGRAM;
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protocol = 0;
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DPRINTF(("unix-dgram, "));
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break;
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case dev_unix_stream:
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case dev_unix_ord_stream:
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family = AF_UNIX;
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type = SOCK_STREAM;
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protocol = 0;
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DPRINTF(("unix-stream, "));
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break;
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case dev_ptm:
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DPRINTF(("ptm);\n"));
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return svr4_ptm_alloc(p);
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default:
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DPRINTF(("%d);\n", minor(dev)));
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return EOPNOTSUPP;
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}
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if ((error = falloc(p, &fp, &fd)) != 0)
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return error;
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if ((error = socreate(family, &so, type, protocol)) != 0) {
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DPRINTF(("socreate error %d\n", error));
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p->p_fd->fd_ofiles[fd] = 0;
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ffree(fp);
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return error;
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}
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fp->f_flag = FREAD|FWRITE;
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fp->f_type = DTYPE_SOCKET;
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fp->f_ops = &svr4_netops;
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fp->f_data = (caddr_t)so;
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(void) svr4_stream_get(fp);
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DPRINTF(("ok);\n"));
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p->p_dupfd = fd;
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return ENXIO;
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}
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static int
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svr4_soo_close(fp, p)
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struct file *fp;
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struct proc *p;
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{
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struct socket *so = (struct socket *) fp->f_data;
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svr4_delete_socket(p, fp);
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free(so->so_internal, M_NETADDR);
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return soo_close(fp, p);
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}
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static int
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svr4_ptm_alloc(p)
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struct proc *p;
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{
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/*
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* XXX this is very, very ugly. But I can't find a better
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* way that won't duplicate a big amount of code from
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* sys_open(). Ho hum...
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*
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* Fortunately for us, Solaris (at least 2.5.1) makes the
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* /dev/ptmx open automatically just open a pty, that (after
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* STREAMS I_PUSHes), is just a plain pty. fstat() is used
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* to get the minor device number to map to a tty.
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*
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* Cycle through the names. If sys_open() returns ENOENT (or
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* ENXIO), short circuit the cycle and exit.
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*/
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static char ptyname[] = "/dev/ptyXX";
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#if _MACHINE_ARCH == i386
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/* XXX. Fix this, pcvt people! */
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static char ttyletters[] = "pqrstuwxyzPQRST";
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#else
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static char ttyletters[] = "pqrstuvwxyzPQRST";
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#endif
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static char ttynumbers[] = "0123456789abcdef";
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caddr_t sg = stackgap_init(p->p_emul);
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char *path = stackgap_alloc(&sg, sizeof(ptyname));
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struct sys_open_args oa;
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int l = 0, n = 0;
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register_t fd = -1;
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int error;
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SCARG(&oa, path) = path;
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SCARG(&oa, flags) = O_RDWR;
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SCARG(&oa, mode) = 0;
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while (fd == -1) {
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ptyname[8] = ttyletters[l];
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ptyname[9] = ttynumbers[n];
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if ((error = copyout(ptyname, path, sizeof(ptyname))) != 0)
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return error;
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switch (error = sys_open(p, &oa, &fd)) {
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case ENOENT:
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case ENXIO:
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return error;
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case 0:
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p->p_dupfd = fd;
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return ENXIO;
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default:
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if (ttynumbers[++n] == '\0') {
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if (ttyletters[++l] == '\0')
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break;
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n = 0;
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}
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}
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}
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return ENOENT;
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}
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struct svr4_strm *
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svr4_stream_get(fp)
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struct file *fp;
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{
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struct socket *so;
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struct svr4_strm *st;
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if (fp == NULL || fp->f_type != DTYPE_SOCKET)
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return NULL;
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so = (struct socket *) fp->f_data;
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if (so->so_internal)
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return so->so_internal;
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/* Allocate a new one. */
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fp->f_ops = &svr4_netops;
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st = malloc(sizeof(struct svr4_strm), M_NETADDR, M_WAITOK);
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st->s_family = so->so_proto->pr_domain->dom_family;
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st->s_cmd = ~0;
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st->s_afd = -1;
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so->so_internal = st;
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return st;
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}
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