22da590f11
Just accept a thread instead. This makes it consistent with fdalloc. No functional changes.
352 lines
8.9 KiB
C
352 lines
8.9 KiB
C
/*-
|
|
* Copyright (c) 1998 Mark Newton
|
|
* Copyright (c) 1994 Christos Zoulas
|
|
* Copyright (c) 1997 Todd Vierling
|
|
* 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.
|
|
* 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 names of the authors 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.
|
|
*
|
|
* Stolen from NetBSD /sys/compat/svr4/svr4_net.c. Pseudo-device driver
|
|
* skeleton produced from /usr/share/examples/drivers/make_pseudo_driver.sh
|
|
* in 3.0-980524-SNAP then hacked a bit (but probably not enough :-).
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h> /* SYSINIT stuff */
|
|
#include <sys/conf.h> /* cdevsw stuff */
|
|
#include <sys/malloc.h> /* malloc region definitions */
|
|
#include <sys/file.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/unistd.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/syscallsubr.h>
|
|
#include <sys/un.h>
|
|
#include <sys/domain.h>
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <sys/sysproto.h>
|
|
|
|
#include <compat/svr4/svr4_types.h>
|
|
#include <compat/svr4/svr4_util.h>
|
|
#include <compat/svr4/svr4_signal.h>
|
|
#include <compat/svr4/svr4_ioctl.h>
|
|
#include <compat/svr4/svr4_stropts.h>
|
|
#include <compat/svr4/svr4_socket.h>
|
|
|
|
static int svr4_soo_close(struct file *, struct thread *);
|
|
static int svr4_ptm_alloc(struct thread *);
|
|
static d_open_t streamsopen;
|
|
|
|
/*
|
|
* Device minor numbers
|
|
*/
|
|
enum {
|
|
dev_ptm = 10,
|
|
dev_arp = 26,
|
|
dev_icmp = 27,
|
|
dev_ip = 28,
|
|
dev_tcp = 35,
|
|
dev_udp = 36,
|
|
dev_rawip = 37,
|
|
dev_unix_dgram = 38,
|
|
dev_unix_stream = 39,
|
|
dev_unix_ord_stream = 40
|
|
};
|
|
|
|
static struct cdev *dt_ptm, *dt_arp, *dt_icmp, *dt_ip, *dt_tcp, *dt_udp,
|
|
*dt_rawip, *dt_unix_dgram, *dt_unix_stream, *dt_unix_ord_stream;
|
|
|
|
static struct fileops svr4_netops;
|
|
|
|
static struct cdevsw streams_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_open = streamsopen,
|
|
.d_name = "streams",
|
|
};
|
|
|
|
struct streams_softc {
|
|
struct isa_device *dev;
|
|
} ;
|
|
|
|
#define UNIT(dev) dev2unit(dev) /* assume one minor number per unit */
|
|
|
|
typedef struct streams_softc *sc_p;
|
|
|
|
static int
|
|
streams_modevent(module_t mod, int type, void *unused)
|
|
{
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
dt_ptm = make_dev(&streams_cdevsw, dev_ptm, 0, 0, 0666,
|
|
"ptm");
|
|
dt_arp = make_dev(&streams_cdevsw, dev_arp, 0, 0, 0666,
|
|
"arp");
|
|
dt_icmp = make_dev(&streams_cdevsw, dev_icmp, 0, 0, 0666,
|
|
"icmp");
|
|
dt_ip = make_dev(&streams_cdevsw, dev_ip, 0, 0, 0666,
|
|
"ip");
|
|
dt_tcp = make_dev(&streams_cdevsw, dev_tcp, 0, 0, 0666,
|
|
"tcp");
|
|
dt_udp = make_dev(&streams_cdevsw, dev_udp, 0, 0, 0666,
|
|
"udp");
|
|
dt_rawip = make_dev(&streams_cdevsw, dev_rawip, 0, 0, 0666,
|
|
"rawip");
|
|
dt_unix_dgram = make_dev(&streams_cdevsw, dev_unix_dgram,
|
|
0, 0, 0666, "ticlts");
|
|
dt_unix_stream = make_dev(&streams_cdevsw, dev_unix_stream,
|
|
0, 0, 0666, "ticots");
|
|
dt_unix_ord_stream = make_dev(&streams_cdevsw,
|
|
dev_unix_ord_stream, 0, 0, 0666, "ticotsord");
|
|
|
|
if (! (dt_ptm && dt_arp && dt_icmp && dt_ip && dt_tcp &&
|
|
dt_udp && dt_rawip && dt_unix_dgram &&
|
|
dt_unix_stream && dt_unix_ord_stream)) {
|
|
printf("WARNING: device config for STREAMS failed\n");
|
|
printf("Suggest unloading streams KLD\n");
|
|
}
|
|
|
|
/* Inherit generic socket file operations, except close(2). */
|
|
bcopy(&socketops, &svr4_netops, sizeof(struct fileops));
|
|
svr4_netops.fo_close = svr4_soo_close;
|
|
|
|
return 0;
|
|
case MOD_UNLOAD:
|
|
/* XXX should check to see if it's busy first */
|
|
destroy_dev(dt_ptm);
|
|
destroy_dev(dt_arp);
|
|
destroy_dev(dt_icmp);
|
|
destroy_dev(dt_ip);
|
|
destroy_dev(dt_tcp);
|
|
destroy_dev(dt_udp);
|
|
destroy_dev(dt_rawip);
|
|
destroy_dev(dt_unix_dgram);
|
|
destroy_dev(dt_unix_stream);
|
|
destroy_dev(dt_unix_ord_stream);
|
|
|
|
return 0;
|
|
default:
|
|
return EOPNOTSUPP;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static moduledata_t streams_mod = {
|
|
"streams",
|
|
streams_modevent,
|
|
0
|
|
};
|
|
DECLARE_MODULE(streams, streams_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
|
|
MODULE_VERSION(streams, 1);
|
|
|
|
/*
|
|
* We only need open() and close() routines. open() calls socreate()
|
|
* to allocate a "real" object behind the stream and mallocs some state
|
|
* info for use by the svr4 emulator; close() deallocates the state
|
|
* information and passes the underlying object to the normal socket close
|
|
* routine.
|
|
*/
|
|
static int
|
|
streamsopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
|
|
{
|
|
struct svr4_strm *st;
|
|
struct socket *so;
|
|
struct file *fp;
|
|
int family, type, protocol;
|
|
int error, fd;
|
|
|
|
if (td->td_dupfd >= 0)
|
|
return ENODEV;
|
|
|
|
switch (dev2unit(dev)) {
|
|
case dev_udp:
|
|
family = AF_INET;
|
|
type = SOCK_DGRAM;
|
|
protocol = IPPROTO_UDP;
|
|
break;
|
|
|
|
case dev_tcp:
|
|
family = AF_INET;
|
|
type = SOCK_STREAM;
|
|
protocol = IPPROTO_TCP;
|
|
break;
|
|
|
|
case dev_ip:
|
|
case dev_rawip:
|
|
family = AF_INET;
|
|
type = SOCK_RAW;
|
|
protocol = IPPROTO_IP;
|
|
break;
|
|
|
|
case dev_icmp:
|
|
family = AF_INET;
|
|
type = SOCK_RAW;
|
|
protocol = IPPROTO_ICMP;
|
|
break;
|
|
|
|
case dev_unix_dgram:
|
|
family = AF_LOCAL;
|
|
type = SOCK_DGRAM;
|
|
protocol = 0;
|
|
break;
|
|
|
|
case dev_unix_stream:
|
|
case dev_unix_ord_stream:
|
|
family = AF_LOCAL;
|
|
type = SOCK_STREAM;
|
|
protocol = 0;
|
|
break;
|
|
|
|
case dev_ptm:
|
|
return svr4_ptm_alloc(td);
|
|
|
|
default:
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
if ((error = falloc(td, &fp, &fd, 0)) != 0)
|
|
return error;
|
|
/* An extra reference on `fp' has been held for us by falloc(). */
|
|
|
|
error = socreate(family, &so, type, protocol, td->td_ucred, td);
|
|
if (error) {
|
|
fdclose(td, fp, fd);
|
|
fdrop(fp, td);
|
|
return error;
|
|
}
|
|
|
|
finit(fp, FREAD | FWRITE, DTYPE_SOCKET, so, &svr4_netops);
|
|
|
|
/*
|
|
* Allocate a stream structure and attach it to this socket.
|
|
* We don't bother locking so_emuldata for SVR4 stream sockets as
|
|
* its value is constant for the lifetime of the stream once it
|
|
* is initialized here.
|
|
*/
|
|
st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
|
|
st->s_family = so->so_proto->pr_domain->dom_family;
|
|
st->s_cmd = ~0;
|
|
st->s_afd = -1;
|
|
st->s_eventmask = 0;
|
|
so->so_emuldata = st;
|
|
|
|
fdrop(fp, td);
|
|
td->td_dupfd = fd;
|
|
return ENXIO;
|
|
}
|
|
|
|
static int
|
|
svr4_ptm_alloc(td)
|
|
struct thread *td;
|
|
{
|
|
/*
|
|
* XXX this is very, very ugly. But I can't find a better
|
|
* way that won't duplicate a big amount of code from
|
|
* sys_open(). Ho hum...
|
|
*
|
|
* Fortunately for us, Solaris (at least 2.5.1) makes the
|
|
* /dev/ptmx open automatically just open a pty, that (after
|
|
* STREAMS I_PUSHes), is just a plain pty. fstat() is used
|
|
* to get the minor device number to map to a tty.
|
|
*
|
|
* Cycle through the names. If sys_open() returns ENOENT (or
|
|
* ENXIO), short circuit the cycle and exit.
|
|
*
|
|
* XXX: Maybe this can now be implemented by posix_openpt()?
|
|
*/
|
|
static char ptyname[] = "/dev/ptyXX";
|
|
static char ttyletters[] = "pqrstuwxyzPQRST";
|
|
static char ttynumbers[] = "0123456789abcdef";
|
|
struct proc *p;
|
|
register_t fd;
|
|
int error, l, n;
|
|
|
|
fd = -1;
|
|
n = 0;
|
|
l = 0;
|
|
p = td->td_proc;
|
|
while (fd == -1) {
|
|
ptyname[8] = ttyletters[l];
|
|
ptyname[9] = ttynumbers[n];
|
|
|
|
error = kern_openat(td, AT_FDCWD, ptyname, UIO_SYSSPACE,
|
|
O_RDWR, 0);
|
|
switch (error) {
|
|
case ENOENT:
|
|
case ENXIO:
|
|
return error;
|
|
case 0:
|
|
td->td_dupfd = td->td_retval[0];
|
|
return ENXIO;
|
|
default:
|
|
if (ttynumbers[++n] == '\0') {
|
|
if (ttyletters[++l] == '\0')
|
|
break;
|
|
n = 0;
|
|
}
|
|
}
|
|
}
|
|
return ENOENT;
|
|
}
|
|
|
|
|
|
struct svr4_strm *
|
|
svr4_stream_get(fp)
|
|
struct file *fp;
|
|
{
|
|
struct socket *so;
|
|
|
|
if (fp == NULL || fp->f_type != DTYPE_SOCKET)
|
|
return NULL;
|
|
|
|
so = fp->f_data;
|
|
return so->so_emuldata;
|
|
}
|
|
|
|
static int
|
|
svr4_soo_close(struct file *fp, struct thread *td)
|
|
{
|
|
struct socket *so = fp->f_data;
|
|
|
|
/* CHECKUNIT_DIAG(ENXIO);*/
|
|
|
|
svr4_delete_socket(td->td_proc, fp);
|
|
free(so->so_emuldata, M_TEMP);
|
|
|
|
fp->f_ops = &badfileops;
|
|
fp->f_data = NULL;
|
|
|
|
return soclose(so);
|
|
}
|