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freebsd-dev/sys/compat/svr4/svr4_stream.c
Jeff Roberson 397c19d175 Remove explicit locking of struct file. 
- Introduce a finit() which is used to initailize the fields of struct file
   in such a way that the ops vector is only valid after the data, type,
   and flags are valid.
 - Protect f_flag and f_count with atomic operations.
 - Remove the global list of all files and associated accounting.
 - Rewrite the unp garbage collection such that it no longer requires
   the global list of all files and instead uses a list of all unp sockets.
 - Mark sockets in the accept queue so we don't incorrectly gc them.

Tested by:	kris, pho
2007-12-30 01:42:15 +00:00

2030 lines
41 KiB
C
Raw Blame History

/*-
* Copyright (c) 1998 Mark Newton. All rights reserved.
* Copyright (c) 1994, 1996 Christos Zoulas. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christos Zoulas.
* 4. 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.
*/
/*
* Pretend that we have streams...
* Yes, this is gross.
*
* ToDo: The state machine for getmsg needs re-thinking
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_compat.h"
#include "opt_ktrace.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/fcntl.h>
#include <sys/filedesc.h>
#include <sys/filio.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/file.h> /* Must come after sys/malloc.h */
#include <sys/mbuf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/protosw.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/stat.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/uio.h>
#include <sys/ktrace.h> /* Must come after sys/uio.h */
#include <sys/un.h>
#include <netinet/in.h>
#include <compat/svr4/svr4.h>
#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_signal.h>
#include <compat/svr4/svr4_proto.h>
#include <compat/svr4/svr4_stropts.h>
#include <compat/svr4/svr4_timod.h>
#include <compat/svr4/svr4_sockmod.h>
#include <compat/svr4/svr4_ioctl.h>
#include <compat/svr4/svr4_socket.h>
/* Utils */
static int clean_pipe(struct thread *, char *);
static void getparm(struct file *, struct svr4_si_sockparms *);
static int svr4_do_putmsg(struct thread *, struct svr4_sys_putmsg_args *,
struct file *);
static int svr4_do_getmsg(struct thread *, struct svr4_sys_getmsg_args *,
struct file *);
/* Address Conversions */
static void sockaddr_to_netaddr_in(struct svr4_strmcmd *,
const struct sockaddr_in *);
static void sockaddr_to_netaddr_un(struct svr4_strmcmd *,
const struct sockaddr_un *);
static void netaddr_to_sockaddr_in(struct sockaddr_in *,
const struct svr4_strmcmd *);
static void netaddr_to_sockaddr_un(struct sockaddr_un *,
const struct svr4_strmcmd *);
/* stream ioctls */
static int i_nread(struct file *, struct thread *, register_t *, int,
u_long, caddr_t);
static int i_fdinsert(struct file *, struct thread *, register_t *, int,
u_long, caddr_t);
static int i_str(struct file *, struct thread *, register_t *, int,
u_long, caddr_t);
static int i_setsig(struct file *, struct thread *, register_t *, int,
u_long, caddr_t);
static int i_getsig(struct file *, struct thread *, register_t *, int,
u_long, caddr_t);
static int _i_bind_rsvd(struct file *, struct thread *, register_t *, int,
u_long, caddr_t);
static int _i_rele_rsvd(struct file *, struct thread *, register_t *, int,
u_long, caddr_t);
/* i_str sockmod calls */
static int sockmod(struct file *, int, struct svr4_strioctl *,
struct thread *);
static int si_listen(struct file *, int, struct svr4_strioctl *,
struct thread *);
static int si_ogetudata(struct file *, int, struct svr4_strioctl *,
struct thread *);
static int si_sockparams(struct file *, int, struct svr4_strioctl *,
struct thread *);
static int si_shutdown (struct file *, int, struct svr4_strioctl *,
struct thread *);
static int si_getudata(struct file *, int, struct svr4_strioctl *,
struct thread *);
/* i_str timod calls */
static int timod(struct file *, int, struct svr4_strioctl *, struct thread *);
static int ti_getinfo(struct file *, int, struct svr4_strioctl *,
struct thread *);
static int ti_bind(struct file *, int, struct svr4_strioctl *, struct thread *);
#ifdef DEBUG_SVR4
static void bufprint(u_char *, size_t);
static int show_ioc(const char *, struct svr4_strioctl *);
static int show_strbuf(struct svr4_strbuf *);
static void show_msg(const char *, int, struct svr4_strbuf *,
struct svr4_strbuf *, int);
static void
bufprint(buf, len)
u_char *buf;
size_t len;
{
size_t i;
uprintf("\n\t");
for (i = 0; i < len; i++) {
uprintf("%x ", buf[i]);
if (i && (i % 16) == 0)
uprintf("\n\t");
}
}
static int
show_ioc(str, ioc)
const char *str;
struct svr4_strioctl *ioc;
{
u_char *ptr = NULL;
int len;
int error;
len = ioc->len;
if (len > 1024)
len = 1024;
if (len > 0) {
ptr = (u_char *) malloc(len, M_TEMP, M_WAITOK);
if ((error = copyin(ioc->buf, ptr, len)) != 0) {
free((char *) ptr, M_TEMP);
return error;
}
}
uprintf("%s cmd = %ld, timeout = %d, len = %d, buf = %p { ",
str, ioc->cmd, ioc->timeout, ioc->len, ioc->buf);
if (ptr != NULL)
bufprint(ptr, len);
uprintf("}\n");
if (ptr != NULL)
free((char *) ptr, M_TEMP);
return 0;
}
static int
show_strbuf(str)
struct svr4_strbuf *str;
{
int error;
u_char *ptr = NULL;
int maxlen = str->maxlen;
int len = str->len;
if (maxlen > 8192)
maxlen = 8192;
if (maxlen < 0)
maxlen = 0;
if (len >= maxlen)
len = maxlen;
if (len > 0) {
ptr = (u_char *) malloc(len, M_TEMP, M_WAITOK);
if ((error = copyin(str->buf, ptr, len)) != 0) {
free((char *) ptr, M_TEMP);
return error;
}
}
uprintf(", { %d, %d, %p=[ ", str->maxlen, str->len, str->buf);
if (ptr)
bufprint(ptr, len);
uprintf("]}");
if (ptr)
free((char *) ptr, M_TEMP);
return 0;
}
static void
show_msg(str, fd, ctl, dat, flags)
const char *str;
int fd;
struct svr4_strbuf *ctl;
struct svr4_strbuf *dat;
int flags;
{
struct svr4_strbuf buf;
int error;
uprintf("%s(%d", str, fd);
if (ctl != NULL) {
if ((error = copyin(ctl, &buf, sizeof(buf))) != 0)
return;
show_strbuf(&buf);
}
else
uprintf(", NULL");
if (dat != NULL) {
if ((error = copyin(dat, &buf, sizeof(buf))) != 0)
return;
show_strbuf(&buf);
}
else
uprintf(", NULL");
uprintf(", %x);\n", flags);
}
#endif /* DEBUG_SVR4 */
/*
* We are faced with an interesting situation. On svr4 unix sockets
* are really pipes. But we really have sockets, and we might as
* well use them. At the point where svr4 calls TI_BIND, it has
* already created a named pipe for the socket using mknod(2).
* We need to create a socket with the same name when we bind,
* so we need to remove the pipe before, otherwise we'll get address
* already in use. So we *carefully* remove the pipe, to avoid
* using this as a random file removal tool. We use system calls
* to avoid code duplication.
*/
static int
clean_pipe(td, path)
struct thread *td;
char *path;
{
struct stat st;
int error;
error = kern_lstat(td, path, UIO_SYSSPACE, &st);
/*
* Make sure we are dealing with a mode 0 named pipe.
*/
if ((st.st_mode & S_IFMT) != S_IFIFO)
return (0);
if ((st.st_mode & ALLPERMS) != 0)
return (0);
error = kern_unlink(td, path, UIO_SYSSPACE);
if (error)
DPRINTF(("clean_pipe: unlink failed %d\n", error));
return (error);
}
static void
sockaddr_to_netaddr_in(sc, sain)
struct svr4_strmcmd *sc;
const struct sockaddr_in *sain;
{
struct svr4_netaddr_in *na;
na = SVR4_ADDROF(sc);
na->family = sain->sin_family;
na->port = sain->sin_port;
na->addr = sain->sin_addr.s_addr;
DPRINTF(("sockaddr_in -> netaddr %d %d %lx\n", na->family, na->port,
na->addr));
}
static void
sockaddr_to_netaddr_un(sc, saun)
struct svr4_strmcmd *sc;
const struct sockaddr_un *saun;
{
struct svr4_netaddr_un *na;
char *dst, *edst = ((char *) sc) + sc->offs + sizeof(na->family) + 1 -
sizeof(*sc);
const char *src;
na = SVR4_ADDROF(sc);
na->family = saun->sun_family;
for (src = saun->sun_path, dst = na->path; (*dst++ = *src++) != '\0'; )
if (dst == edst)
break;
DPRINTF(("sockaddr_un -> netaddr %d %s\n", na->family, na->path));
}
static void
netaddr_to_sockaddr_in(sain, sc)
struct sockaddr_in *sain;
const struct svr4_strmcmd *sc;
{
const struct svr4_netaddr_in *na;
na = SVR4_C_ADDROF(sc);
memset(sain, 0, sizeof(*sain));
sain->sin_len = sizeof(*sain);
sain->sin_family = na->family;
sain->sin_port = na->port;
sain->sin_addr.s_addr = na->addr;
DPRINTF(("netaddr -> sockaddr_in %d %d %x\n", sain->sin_family,
sain->sin_port, sain->sin_addr.s_addr));
}
static void
netaddr_to_sockaddr_un(saun, sc)
struct sockaddr_un *saun;
const struct svr4_strmcmd *sc;
{
const struct svr4_netaddr_un *na;
char *dst, *edst = &saun->sun_path[sizeof(saun->sun_path) - 1];
const char *src;
na = SVR4_C_ADDROF(sc);
memset(saun, 0, sizeof(*saun));
saun->sun_family = na->family;
for (src = na->path, dst = saun->sun_path; (*dst++ = *src++) != '\0'; )
if (dst == edst)
break;
saun->sun_len = dst - saun->sun_path;
DPRINTF(("netaddr -> sockaddr_un %d %s\n", saun->sun_family,
saun->sun_path));
}
static void
getparm(fp, pa)
struct file *fp;
struct svr4_si_sockparms *pa;
{
struct svr4_strm *st;
struct socket *so;
st = svr4_stream_get(fp);
if (st == NULL)
return;
so = fp->f_data;
pa->family = st->s_family;
switch (so->so_type) {
case SOCK_DGRAM:
pa->type = SVR4_T_CLTS;
pa->protocol = IPPROTO_UDP;
DPRINTF(("getparm(dgram)\n"));
return;
case SOCK_STREAM:
pa->type = SVR4_T_COTS; /* What about T_COTS_ORD? XXX */
pa->protocol = IPPROTO_IP;
DPRINTF(("getparm(stream)\n"));
return;
case SOCK_RAW:
pa->type = SVR4_T_CLTS;
pa->protocol = IPPROTO_RAW;
DPRINTF(("getparm(raw)\n"));
return;
default:
pa->type = 0;
pa->protocol = 0;
DPRINTF(("getparm(type %d?)\n", so->so_type));
return;
}
}
static int
si_ogetudata(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
int error;
struct svr4_si_oudata ud;
struct svr4_si_sockparms pa;
if (ioc->len != sizeof(ud) && ioc->len != sizeof(ud) - sizeof(int)) {
DPRINTF(("SI_OGETUDATA: Wrong size %d != %d\n",
sizeof(ud), ioc->len));
return EINVAL;
}
if ((error = copyin(ioc->buf, &ud, sizeof(ud))) != 0)
return error;
getparm(fp, &pa);
switch (pa.family) {
case AF_INET:
ud.tidusize = 16384;
ud.addrsize = sizeof(struct svr4_sockaddr_in);
if (pa.type == SVR4_SOCK_STREAM)
ud.etsdusize = 1;
else
ud.etsdusize = 0;
break;
case AF_LOCAL:
ud.tidusize = 65536;
ud.addrsize = 128;
ud.etsdusize = 128;
break;
default:
DPRINTF(("SI_OGETUDATA: Unsupported address family %d\n",
pa.family));
return ENOSYS;
}
/* I have no idea what these should be! */
ud.optsize = 128;
ud.tsdusize = 128;
ud.servtype = pa.type;
/* XXX: Fixme */
ud.so_state = 0;
ud.so_options = 0;
return copyout(&ud, ioc->buf, ioc->len);
}
static int
si_sockparams(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
struct svr4_si_sockparms pa;
getparm(fp, &pa);
return copyout(&pa, ioc->buf, sizeof(pa));
}
static int
si_listen(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
int error;
struct svr4_strm *st = svr4_stream_get(fp);
struct svr4_strmcmd lst;
struct listen_args la;
if (st == NULL)
return EINVAL;
if (ioc->len < 0 || ioc->len > sizeof(lst))
return EINVAL;
if ((error = copyin(ioc->buf, &lst, ioc->len)) != 0)
return error;
if (lst.cmd != SVR4_TI_OLD_BIND_REQUEST) {
DPRINTF(("si_listen: bad request %ld\n", lst.cmd));
return EINVAL;
}
/*
* We are making assumptions again...
*/
la.s = fd;
DPRINTF(("SI_LISTEN: fileno %d backlog = %d\n", fd, 5));
la.backlog = 5;
if ((error = listen(td, &la)) != 0) {
DPRINTF(("SI_LISTEN: listen failed %d\n", error));
return error;
}
st->s_cmd = SVR4_TI__ACCEPT_WAIT;
lst.cmd = SVR4_TI_BIND_REPLY;
switch (st->s_family) {
case AF_INET:
/* XXX: Fill the length here */
break;
case AF_LOCAL:
lst.len = 140;
lst.pad[28] = 0x00000000; /* magic again */
lst.pad[29] = 0x00000800; /* magic again */
lst.pad[30] = 0x80001400; /* magic again */
break;
default:
DPRINTF(("SI_LISTEN: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
if ((error = copyout(&lst, ioc->buf, ioc->len)) != 0)
return error;
return 0;
}
static int
si_getudata(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
int error;
struct svr4_si_udata ud;
if (sizeof(ud) != ioc->len) {
DPRINTF(("SI_GETUDATA: Wrong size %d != %d\n",
sizeof(ud), ioc->len));
return EINVAL;
}
if ((error = copyin(ioc->buf, &ud, sizeof(ud))) != 0)
return error;
getparm(fp, &ud.sockparms);
switch (ud.sockparms.family) {
case AF_INET:
DPRINTF(("getudata_inet\n"));
ud.tidusize = 16384;
ud.tsdusize = 16384;
ud.addrsize = sizeof(struct svr4_sockaddr_in);
if (ud.sockparms.type == SVR4_SOCK_STREAM)
ud.etsdusize = 1;
else
ud.etsdusize = 0;
ud.optsize = 0;
break;
case AF_LOCAL:
DPRINTF(("getudata_local\n"));
ud.tidusize = 65536;
ud.tsdusize = 128;
ud.addrsize = 128;
ud.etsdusize = 128;
ud.optsize = 128;
break;
default:
DPRINTF(("SI_GETUDATA: Unsupported address family %d\n",
ud.sockparms.family));
return ENOSYS;
}
ud.servtype = ud.sockparms.type;
DPRINTF(("ud.servtype = %d\n", ud.servtype));
/* XXX: Fixme */
ud.so_state = 0;
ud.so_options = 0;
return copyout(&ud, ioc->buf, sizeof(ud));
}
static int
si_shutdown(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
int error;
struct shutdown_args ap;
if (ioc->len != sizeof(ap.how)) {
DPRINTF(("SI_SHUTDOWN: Wrong size %d != %d\n",
sizeof(ap.how), ioc->len));
return EINVAL;
}
if ((error = copyin(ioc->buf, &ap.how, ioc->len)) != 0)
return error;
ap.s = fd;
return shutdown(td, &ap);
}
static int
sockmod(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
switch (ioc->cmd) {
case SVR4_SI_OGETUDATA:
DPRINTF(("SI_OGETUDATA\n"));
return si_ogetudata(fp, fd, ioc, td);
case SVR4_SI_SHUTDOWN:
DPRINTF(("SI_SHUTDOWN\n"));
return si_shutdown(fp, fd, ioc, td);
case SVR4_SI_LISTEN:
DPRINTF(("SI_LISTEN\n"));
return si_listen(fp, fd, ioc, td);
case SVR4_SI_SETMYNAME:
DPRINTF(("SI_SETMYNAME\n"));
return 0;
case SVR4_SI_SETPEERNAME:
DPRINTF(("SI_SETPEERNAME\n"));
return 0;
case SVR4_SI_GETINTRANSIT:
DPRINTF(("SI_GETINTRANSIT\n"));
return 0;
case SVR4_SI_TCL_LINK:
DPRINTF(("SI_TCL_LINK\n"));
return 0;
case SVR4_SI_TCL_UNLINK:
DPRINTF(("SI_TCL_UNLINK\n"));
return 0;
case SVR4_SI_SOCKPARAMS:
DPRINTF(("SI_SOCKPARAMS\n"));
return si_sockparams(fp, fd, ioc, td);
case SVR4_SI_GETUDATA:
DPRINTF(("SI_GETUDATA\n"));
return si_getudata(fp, fd, ioc, td);
default:
DPRINTF(("Unknown sockmod ioctl %lx\n", ioc->cmd));
return 0;
}
}
static int
ti_getinfo(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
int error;
struct svr4_infocmd info;
memset(&info, 0, sizeof(info));
if (ioc->len < 0 || ioc->len > sizeof(info))
return EINVAL;
if ((error = copyin(ioc->buf, &info, ioc->len)) != 0)
return error;
if (info.cmd != SVR4_TI_INFO_REQUEST)
return EINVAL;
info.cmd = SVR4_TI_INFO_REPLY;
info.tsdu = 0;
info.etsdu = 1;
info.cdata = -2;
info.ddata = -2;
info.addr = 16;
info.opt = -1;
info.tidu = 16384;
info.serv = 2;
info.current = 0;
info.provider = 2;
ioc->len = sizeof(info);
if ((error = copyout(&info, ioc->buf, ioc->len)) != 0)
return error;
return 0;
}
static int
ti_bind(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
int error;
struct svr4_strm *st = svr4_stream_get(fp);
struct sockaddr_in sain;
struct sockaddr_un saun;
struct sockaddr *skp;
int sasize;
struct svr4_strmcmd bnd;
if (st == NULL) {
DPRINTF(("ti_bind: bad file descriptor\n"));
return EINVAL;
}
if (ioc->len < 0 || ioc->len > sizeof(bnd))
return EINVAL;
if ((error = copyin(ioc->buf, &bnd, ioc->len)) != 0)
return error;
if (bnd.cmd != SVR4_TI_OLD_BIND_REQUEST) {
DPRINTF(("ti_bind: bad request %ld\n", bnd.cmd));
return EINVAL;
}
switch (st->s_family) {
case AF_INET:
skp = (struct sockaddr *)&sain;
sasize = sizeof(sain);
if (bnd.offs == 0)
goto error;
netaddr_to_sockaddr_in(&sain, &bnd);
DPRINTF(("TI_BIND: fam %d, port %d, addr %x\n",
sain.sin_family, sain.sin_port,
sain.sin_addr.s_addr));
break;
case AF_LOCAL:
skp = (struct sockaddr *)&saun;
sasize = sizeof(saun);
if (bnd.offs == 0)
goto error;
netaddr_to_sockaddr_un(&saun, &bnd);
if (saun.sun_path[0] == '\0')
goto error;
DPRINTF(("TI_BIND: fam %d, path %s\n",
saun.sun_family, saun.sun_path));
if ((error = clean_pipe(td, saun.sun_path)) != 0)
return error;
bnd.pad[28] = 0x00001000; /* magic again */
break;
default:
DPRINTF(("TI_BIND: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
DPRINTF(("TI_BIND: fileno %d\n", fd));
if ((error = kern_bind(td, fd, skp)) != 0) {
DPRINTF(("TI_BIND: bind failed %d\n", error));
return error;
}
goto reply;
error:
memset(&bnd, 0, sizeof(bnd));
bnd.len = sasize + 4;
bnd.offs = 0x10; /* XXX */
reply:
bnd.cmd = SVR4_TI_BIND_REPLY;
if ((error = copyout(&bnd, ioc->buf, ioc->len)) != 0)
return error;
return 0;
}
static int
timod(fp, fd, ioc, td)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct thread *td;
{
switch (ioc->cmd) {
case SVR4_TI_GETINFO:
DPRINTF(("TI_GETINFO\n"));
return ti_getinfo(fp, fd, ioc, td);
case SVR4_TI_OPTMGMT:
DPRINTF(("TI_OPTMGMT\n"));
return 0;
case SVR4_TI_BIND:
DPRINTF(("TI_BIND\n"));
return ti_bind(fp, fd, ioc, td);
case SVR4_TI_UNBIND:
DPRINTF(("TI_UNBIND\n"));
return 0;
default:
DPRINTF(("Unknown timod ioctl %lx\n", ioc->cmd));
return 0;
}
}
int
svr4_stream_ti_ioctl(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
struct svr4_strbuf skb, *sub = (struct svr4_strbuf *) dat;
struct svr4_strm *st = svr4_stream_get(fp);
int error;
struct sockaddr *sa;
socklen_t sasize, oldsasize;
struct svr4_strmcmd sc;
DPRINTF(("svr4_stream_ti_ioctl\n"));
if (st == NULL)
return EINVAL;
sc.offs = 0x10;
if ((error = copyin(sub, &skb, sizeof(skb))) != 0) {
DPRINTF(("ti_ioctl: error copying in strbuf\n"));
return error;
}
switch (st->s_family) {
case AF_INET:
sasize = sizeof(struct sockaddr_in);
break;
case AF_LOCAL:
sasize = sizeof(struct sockaddr_un);
break;
default:
DPRINTF(("ti_ioctl: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
oldsasize = sasize;
switch (cmd) {
case SVR4_TI_GETMYNAME:
DPRINTF(("TI_GETMYNAME\n"));
{
error = kern_getsockname(td, fd, &sa, &sasize);
if (error) {
DPRINTF(("ti_ioctl: getsockname error\n"));
return error;
}
}
break;
case SVR4_TI_GETPEERNAME:
DPRINTF(("TI_GETPEERNAME\n"));
{
error = kern_getpeername(td, fd, &sa, &sasize);
if (error) {
DPRINTF(("ti_ioctl: getpeername error\n"));
return error;
}
}
break;
case SVR4_TI_SETMYNAME:
DPRINTF(("TI_SETMYNAME\n"));
return 0;
case SVR4_TI_SETPEERNAME:
DPRINTF(("TI_SETPEERNAME\n"));
return 0;
default:
DPRINTF(("ti_ioctl: Unknown ioctl %lx\n", cmd));
return ENOSYS;
}
if (sasize < 0 || sasize > oldsasize) {
free(sa, M_SONAME);
return EINVAL;
}
switch (st->s_family) {
case AF_INET:
sockaddr_to_netaddr_in(&sc, (struct sockaddr_in *)sa);
skb.len = sasize;
break;
case AF_LOCAL:
sockaddr_to_netaddr_un(&sc, (struct sockaddr_un *)sa);
skb.len = sasize + 4;
break;
default:
free(sa, M_SONAME);
return ENOSYS;
}
free(sa, M_SONAME);
if ((error = copyout(SVR4_ADDROF(&sc), skb.buf, sasize)) != 0) {
DPRINTF(("ti_ioctl: error copying out socket data\n"));
return error;
}
if ((error = copyout(&skb, sub, sizeof(skb))) != 0) {
DPRINTF(("ti_ioctl: error copying out strbuf\n"));
return error;
}
return error;
}
static int
i_nread(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
int error;
int nread = 0;
/*
* We are supposed to return the message length in nread, and the
* number of messages in retval. We don't have the notion of number
* of stream messages, so we just find out if we have any bytes waiting
* for us, and if we do, then we assume that we have at least one
* message waiting for us.
*/
if ((error = fo_ioctl(fp, FIONREAD, (caddr_t) &nread, td->td_ucred,
td)) != 0)
return error;
if (nread != 0)
*retval = 1;
else
*retval = 0;
return copyout(&nread, dat, sizeof(nread));
}
static int
i_fdinsert(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
/*
* Major hack again here. We assume that we are using this to
* implement accept(2). If that is the case, we have already
* called accept, and we have stored the file descriptor in
* afd. We find the file descriptor that the code wants to use
* in fd insert, and then we dup2() our accepted file descriptor
* to it.
*/
int error;
struct svr4_strm *st = svr4_stream_get(fp);
struct svr4_strfdinsert fdi;
struct dup2_args d2p;
if (st == NULL) {
DPRINTF(("fdinsert: bad file type\n"));
return EINVAL;
}
mtx_lock(&Giant);
if (st->s_afd == -1) {
DPRINTF(("fdinsert: accept fd not found\n"));
mtx_unlock(&Giant);
return ENOENT;
}
if ((error = copyin(dat, &fdi, sizeof(fdi))) != 0) {
DPRINTF(("fdinsert: copyin failed %d\n", error));
mtx_unlock(&Giant);
return error;
}
d2p.from = st->s_afd;
d2p.to = fdi.fd;
if ((error = dup2(td, &d2p)) != 0) {
DPRINTF(("fdinsert: dup2(%d, %d) failed %d\n",
st->s_afd, fdi.fd, error));
mtx_unlock(&Giant);
return error;
}
if ((error = kern_close(td, st->s_afd)) != 0) {
DPRINTF(("fdinsert: close(%d) failed %d\n",
st->s_afd, error));
mtx_unlock(&Giant);
return error;
}
st->s_afd = -1;
mtx_unlock(&Giant);
*retval = 0;
return 0;
}
static int
_i_bind_rsvd(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
struct mkfifo_args ap;
/*
* This is a supposed to be a kernel and library only ioctl.
* It gets called before ti_bind, when we have a unix
* socket, to physically create the socket transport and
* ``reserve'' it. I don't know how this get reserved inside
* the kernel, but we are going to create it nevertheless.
*/
ap.path = dat;
ap.mode = S_IFIFO;
return mkfifo(td, &ap);
}
static int
_i_rele_rsvd(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
struct unlink_args ap;
/*
* This is a supposed to be a kernel and library only ioctl.
* I guess it is supposed to release the socket.
*/
ap.path = dat;
return unlink(td, &ap);
}
static int
i_str(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
int error;
struct svr4_strioctl ioc;
if ((error = copyin(dat, &ioc, sizeof(ioc))) != 0)
return error;
#ifdef DEBUG_SVR4
if ((error = show_ioc(">", &ioc)) != 0)
return error;
#endif /* DEBUG_SVR4 */
switch (ioc.cmd & 0xff00) {
case SVR4_SIMOD:
if ((error = sockmod(fp, fd, &ioc, td)) != 0)
return error;
break;
case SVR4_TIMOD:
if ((error = timod(fp, fd, &ioc, td)) != 0)
return error;
break;
default:
DPRINTF(("Unimplemented module %c %ld\n",
(char) (cmd >> 8), cmd & 0xff));
return 0;
}
#ifdef DEBUG_SVR4
if ((error = show_ioc("<", &ioc)) != 0)
return error;
#endif /* DEBUG_SVR4 */
return copyout(&ioc, dat, sizeof(ioc));
}
static int
i_setsig(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
/*
* This is the best we can do for now; we cannot generate
* signals only for specific events so the signal mask gets
* ignored; we save it just to pass it to a possible I_GETSIG...
*
* We alse have to fix the O_ASYNC fcntl bit, so the
* process will get SIGPOLLs.
*/
int error;
register_t oflags, flags;
struct svr4_strm *st = svr4_stream_get(fp);
if (st == NULL) {
DPRINTF(("i_setsig: bad file descriptor\n"));
return EINVAL;
}
/* get old status flags */
error = kern_fcntl(td, fd, F_GETFL, 0);
if (error)
return (error);
oflags = td->td_retval[0];
/* update the flags */
mtx_lock(&Giant);
if (dat != NULL) {
int mask;
flags = oflags | O_ASYNC;
if ((error = copyin(dat, &mask, sizeof(mask))) != 0) {
DPRINTF(("i_setsig: bad eventmask pointer\n"));
return error;
}
if (mask & SVR4_S_ALLMASK) {
DPRINTF(("i_setsig: bad eventmask data %x\n", mask));
return EINVAL;
}
st->s_eventmask = mask;
}
else {
flags = oflags & ~O_ASYNC;
st->s_eventmask = 0;
}
mtx_unlock(&Giant);
/* set the new flags, if changed */
if (flags != oflags) {
error = kern_fcntl(td, fd, F_SETFL, flags);
if (error)
return (error);
flags = td->td_retval[0];
}
/* set up SIGIO receiver if needed */
if (dat != NULL)
return (kern_fcntl(td, fd, F_SETOWN, td->td_proc->p_pid));
return 0;
}
static int
i_getsig(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
int error, eventmask;
if (dat != NULL) {
struct svr4_strm *st = svr4_stream_get(fp);
if (st == NULL) {
DPRINTF(("i_getsig: bad file descriptor\n"));
return EINVAL;
}
mtx_lock(&Giant);
eventmask = st->s_eventmask;
mtx_unlock(&Giant);
if ((error = copyout(&eventmask, dat,
sizeof(eventmask))) != 0) {
DPRINTF(("i_getsig: bad eventmask pointer\n"));
return error;
}
}
return 0;
}
int
svr4_stream_ioctl(fp, td, retval, fd, cmd, dat)
struct file *fp;
struct thread *td;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
*retval = 0;
/*
* All the following stuff assumes "sockmod" is pushed...
*/
switch (cmd) {
case SVR4_I_NREAD:
DPRINTF(("I_NREAD\n"));
return i_nread(fp, td, retval, fd, cmd, dat);
case SVR4_I_PUSH:
DPRINTF(("I_PUSH %p\n", dat));
#if defined(DEBUG_SVR4)
show_strbuf((struct svr4_strbuf *)dat);
#endif
return 0;
case SVR4_I_POP:
DPRINTF(("I_POP\n"));
return 0;
case SVR4_I_LOOK:
DPRINTF(("I_LOOK\n"));
return 0;
case SVR4_I_FLUSH:
DPRINTF(("I_FLUSH\n"));
return 0;
case SVR4_I_SRDOPT:
DPRINTF(("I_SRDOPT\n"));
return 0;
case SVR4_I_GRDOPT:
DPRINTF(("I_GRDOPT\n"));
return 0;
case SVR4_I_STR:
DPRINTF(("I_STR\n"));
return i_str(fp, td, retval, fd, cmd, dat);
case SVR4_I_SETSIG:
DPRINTF(("I_SETSIG\n"));
return i_setsig(fp, td, retval, fd, cmd, dat);
case SVR4_I_GETSIG:
DPRINTF(("I_GETSIG\n"));
return i_getsig(fp, td, retval, fd, cmd, dat);
case SVR4_I_FIND:
DPRINTF(("I_FIND\n"));
/*
* Here we are not pushing modules really, we just
* pretend all are present
*/
*retval = 0;
return 0;
case SVR4_I_LINK:
DPRINTF(("I_LINK\n"));
return 0;
case SVR4_I_UNLINK:
DPRINTF(("I_UNLINK\n"));
return 0;
case SVR4_I_ERECVFD:
DPRINTF(("I_ERECVFD\n"));
return 0;
case SVR4_I_PEEK:
DPRINTF(("I_PEEK\n"));
return 0;
case SVR4_I_FDINSERT:
DPRINTF(("I_FDINSERT\n"));
return i_fdinsert(fp, td, retval, fd, cmd, dat);
case SVR4_I_SENDFD:
DPRINTF(("I_SENDFD\n"));
return 0;
case SVR4_I_RECVFD:
DPRINTF(("I_RECVFD\n"));
return 0;
case SVR4_I_SWROPT:
DPRINTF(("I_SWROPT\n"));
return 0;
case SVR4_I_GWROPT:
DPRINTF(("I_GWROPT\n"));
return 0;
case SVR4_I_LIST:
DPRINTF(("I_LIST\n"));
return 0;
case SVR4_I_PLINK:
DPRINTF(("I_PLINK\n"));
return 0;
case SVR4_I_PUNLINK:
DPRINTF(("I_PUNLINK\n"));
return 0;
case SVR4_I_SETEV:
DPRINTF(("I_SETEV\n"));
return 0;
case SVR4_I_GETEV:
DPRINTF(("I_GETEV\n"));
return 0;
case SVR4_I_STREV:
DPRINTF(("I_STREV\n"));
return 0;
case SVR4_I_UNSTREV:
DPRINTF(("I_UNSTREV\n"));
return 0;
case SVR4_I_FLUSHBAND:
DPRINTF(("I_FLUSHBAND\n"));
return 0;
case SVR4_I_CKBAND:
DPRINTF(("I_CKBAND\n"));
return 0;
case SVR4_I_GETBAND:
DPRINTF(("I_GETBANK\n"));
return 0;
case SVR4_I_ATMARK:
DPRINTF(("I_ATMARK\n"));
return 0;
case SVR4_I_SETCLTIME:
DPRINTF(("I_SETCLTIME\n"));
return 0;
case SVR4_I_GETCLTIME:
DPRINTF(("I_GETCLTIME\n"));
return 0;
case SVR4_I_CANPUT:
DPRINTF(("I_CANPUT\n"));
return 0;
case SVR4__I_BIND_RSVD:
DPRINTF(("_I_BIND_RSVD\n"));
return _i_bind_rsvd(fp, td, retval, fd, cmd, dat);
case SVR4__I_RELE_RSVD:
DPRINTF(("_I_RELE_RSVD\n"));
return _i_rele_rsvd(fp, td, retval, fd, cmd, dat);
default:
DPRINTF(("unimpl cmd = %lx\n", cmd));
break;
}
return 0;
}
int
svr4_sys_putmsg(td, uap)
register struct thread *td;
struct svr4_sys_putmsg_args *uap;
{
struct file *fp;
int error;
if ((error = fget(td, uap->fd, &fp)) != 0) {
#ifdef DEBUG_SVR4
uprintf("putmsg: bad fp\n");
#endif
return EBADF;
}
error = svr4_do_putmsg(td, uap, fp);
fdrop(fp, td);
return (error);
}
static int
svr4_do_putmsg(td, uap, fp)
struct thread *td;
struct svr4_sys_putmsg_args *uap;
struct file *fp;
{
struct svr4_strbuf dat, ctl;
struct svr4_strmcmd sc;
struct sockaddr_in sain;
struct sockaddr_un saun;
struct sockaddr *sa;
int sasize, *retval;
struct svr4_strm *st;
int error;
retval = td->td_retval;
#ifdef DEBUG_SVR4
show_msg(">putmsg", uap->fd, uap->ctl,
uap->dat, uap->flags);
#endif /* DEBUG_SVR4 */
if (uap->ctl != NULL) {
if ((error = copyin(uap->ctl, &ctl, sizeof(ctl))) != 0) {
#ifdef DEBUG_SVR4
uprintf("putmsg: copyin(): %d\n", error);
#endif
return error;
}
}
else
ctl.len = -1;
if (uap->dat != NULL) {
if ((error = copyin(uap->dat, &dat, sizeof(dat))) != 0) {
#ifdef DEBUG_SVR4
uprintf("putmsg: copyin(): %d (2)\n", error);
#endif
return error;
}
}
else
dat.len = -1;
/*
* Only for sockets for now.
*/
if ((st = svr4_stream_get(fp)) == NULL) {
DPRINTF(("putmsg: bad file type\n"));
return EINVAL;
}
if (ctl.len < 0 || ctl.len > sizeof(sc)) {
DPRINTF(("putmsg: Bad control size %d != %d\n", ctl.len,
sizeof(struct svr4_strmcmd)));
return EINVAL;
}
if ((error = copyin(ctl.buf, &sc, ctl.len)) != 0)
return error;
switch (st->s_family) {
case AF_INET:
if (sc.len != sizeof(sain)) {
if (sc.cmd == SVR4_TI_DATA_REQUEST) {
struct write_args wa;
/* Solaris seems to use sc.cmd = 3 to
* send "expedited" data. telnet uses
* this for options processing, sending EOF,
* etc. I'm sure other things use it too.
* I don't have any documentation
* on it, so I'm making a guess that this
* is how it works. newton@atdot.dotat.org XXX
*/
DPRINTF(("sending expedited data ??\n"));
wa.fd = uap->fd;
wa.buf = dat.buf;
wa.nbyte = dat.len;
return write(td, &wa);
}
DPRINTF(("putmsg: Invalid inet length %ld\n", sc.len));
return EINVAL;
}
netaddr_to_sockaddr_in(&sain, &sc);
sa = (struct sockaddr *)&sain;
sasize = sizeof(sain);
if (sain.sin_family != st->s_family)
error = EINVAL;
break;
case AF_LOCAL:
if (ctl.len == 8) {
/* We are doing an accept; succeed */
DPRINTF(("putmsg: Do nothing\n"));
*retval = 0;
return 0;
}
else {
/* Maybe we've been given a device/inode pair */
dev_t *dev = SVR4_ADDROF(&sc);
ino_t *ino = (ino_t *) &dev[1];
if (svr4_find_socket(td, fp, *dev, *ino, &saun) != 0) {
/* I guess we have it by name */
netaddr_to_sockaddr_un(&saun, &sc);
}
sa = (struct sockaddr *)&saun;
sasize = sizeof(saun);
}
break;
default:
DPRINTF(("putmsg: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
mtx_lock(&Giant);
st->s_cmd = sc.cmd;
mtx_unlock(&Giant);
switch (sc.cmd) {
case SVR4_TI_CONNECT_REQUEST: /* connect */
{
return (kern_connect(td, uap->fd, sa));
}
case SVR4_TI_SENDTO_REQUEST: /* sendto */
{
struct msghdr msg;
struct iovec aiov;
msg.msg_name = sa;
msg.msg_namelen = sasize;
msg.msg_iov = &aiov;
msg.msg_iovlen = 1;
msg.msg_control = 0;
msg.msg_flags = 0;
aiov.iov_base = dat.buf;
aiov.iov_len = dat.len;
error = kern_sendit(td, uap->fd, &msg, uap->flags,
NULL, UIO_USERSPACE);
DPRINTF(("sendto_request error: %d\n", error));
*retval = 0;
return error;
}
default:
DPRINTF(("putmsg: Unimplemented command %lx\n", sc.cmd));
return ENOSYS;
}
}
int
svr4_sys_getmsg(td, uap)
struct thread *td;
struct svr4_sys_getmsg_args *uap;
{
struct file *fp;
int error;
if ((error = fget(td, uap->fd, &fp)) != 0) {
#ifdef DEBUG_SVR4
uprintf("getmsg: bad fp\n");
#endif
return EBADF;
}
error = svr4_do_getmsg(td, uap, fp);
fdrop(fp, td);
return (error);
}
int
svr4_do_getmsg(td, uap, fp)
register struct thread *td;
struct svr4_sys_getmsg_args *uap;
struct file *fp;
{
struct svr4_strbuf dat, ctl;
struct svr4_strmcmd sc;
int error, *retval;
struct msghdr msg;
struct iovec aiov;
struct sockaddr_in sain;
struct sockaddr_un saun;
struct sockaddr *sa;
socklen_t sasize;
struct svr4_strm *st;
struct file *afp;
int fl;
retval = td->td_retval;
error = 0;
afp = NULL;
memset(&sc, 0, sizeof(sc));
#ifdef DEBUG_SVR4
show_msg(">getmsg", uap->fd, uap->ctl,
uap->dat, 0);
#endif /* DEBUG_SVR4 */
if (uap->ctl != NULL) {
if ((error = copyin(uap->ctl, &ctl, sizeof(ctl))) != 0)
return error;
if (ctl.len < 0)
return EINVAL;
}
else {
ctl.len = -1;
ctl.maxlen = 0;
}
if (uap->dat != NULL) {
if ((error = copyin(uap->dat, &dat, sizeof(dat))) != 0)
return error;
}
else {
dat.len = -1;
dat.maxlen = 0;
}
/*
* Only for sockets for now.
*/
if ((st = svr4_stream_get(fp)) == NULL) {
DPRINTF(("getmsg: bad file type\n"));
return EINVAL;
}
if (ctl.maxlen == -1 || dat.maxlen == -1) {
DPRINTF(("getmsg: Cannot handle -1 maxlen (yet)\n"));
return ENOSYS;
}
switch (st->s_family) {
case AF_INET:
sasize = sizeof(sain);
break;
case AF_LOCAL:
sasize = sizeof(saun);
break;
default:
DPRINTF(("getmsg: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
mtx_lock(&Giant);
switch (st->s_cmd) {
case SVR4_TI_CONNECT_REQUEST:
DPRINTF(("getmsg: TI_CONNECT_REQUEST\n"));
/*
* We do the connect in one step, so the putmsg should
* have gotten the error.
*/
sc.cmd = SVR4_TI_OK_REPLY;
sc.len = 0;
ctl.len = 8;
dat.len = -1;
fl = 1;
st->s_cmd = sc.cmd;
break;
case SVR4_TI_OK_REPLY:
DPRINTF(("getmsg: TI_OK_REPLY\n"));
/*
* We are immediately after a connect reply, so we send
* a connect verification.
*/
error = kern_getpeername(td, uap->fd, &sa, &sasize);
if (error) {
mtx_unlock(&Giant);
DPRINTF(("getmsg: getpeername failed %d\n", error));
return error;
}
sc.cmd = SVR4_TI_CONNECT_REPLY;
sc.pad[0] = 0x4;
sc.offs = 0x18;
sc.pad[1] = 0x14;
sc.pad[2] = 0x04000402;
switch (st->s_family) {
case AF_INET:
sc.len = sasize;
sockaddr_to_netaddr_in(&sc, (struct sockaddr_in *)sa);
break;
case AF_LOCAL:
sc.len = sasize + 4;
sockaddr_to_netaddr_un(&sc, (struct sockaddr_un *)sa);
break;
default:
mtx_unlock(&Giant);
free(sa, M_SONAME);
return ENOSYS;
}
free(sa, M_SONAME);
ctl.len = 40;
dat.len = -1;
fl = 0;
st->s_cmd = sc.cmd;
break;
case SVR4_TI__ACCEPT_OK:
DPRINTF(("getmsg: TI__ACCEPT_OK\n"));
/*
* We do the connect in one step, so the putmsg should
* have gotten the error.
*/
sc.cmd = SVR4_TI_OK_REPLY;
sc.len = 1;
ctl.len = 8;
dat.len = -1;
fl = 1;
st->s_cmd = SVR4_TI__ACCEPT_WAIT;
break;
case SVR4_TI__ACCEPT_WAIT:
DPRINTF(("getmsg: TI__ACCEPT_WAIT\n"));
/*
* We are after a listen, so we try to accept...
*/
error = kern_accept(td, uap->fd, &sa, &sasize, &afp);
if (error) {
mtx_unlock(&Giant);
DPRINTF(("getmsg: accept failed %d\n", error));
return error;
}
st->s_afd = *retval;
DPRINTF(("getmsg: Accept fd = %d\n", st->s_afd));
sc.cmd = SVR4_TI_ACCEPT_REPLY;
sc.offs = 0x18;
sc.pad[0] = 0x0;
switch (st->s_family) {
case AF_INET:
sc.pad[1] = 0x28;
sockaddr_to_netaddr_in(&sc, (struct sockaddr_in *)&sa);
ctl.len = 40;
sc.len = sasize;
break;
case AF_LOCAL:
sc.pad[1] = 0x00010000;
sc.pad[2] = 0xf6bcdaa0; /* I don't know what that is */
sc.pad[3] = 0x00010000;
ctl.len = 134;
sc.len = sasize + 4;
break;
default:
fdclose(td->td_proc->p_fd, afp, st->s_afd, td);
fdrop(afp, td);
st->s_afd = -1;
mtx_unlock(&Giant);
free(sa, M_SONAME);
return ENOSYS;
}
free(sa, M_SONAME);
dat.len = -1;
fl = 0;
st->s_cmd = SVR4_TI__ACCEPT_OK;
break;
case SVR4_TI_SENDTO_REQUEST:
DPRINTF(("getmsg: TI_SENDTO_REQUEST\n"));
if (ctl.maxlen > 36 && ctl.len < 36)
ctl.len = 36;
if (ctl.len > sizeof(sc))
ctl.len = sizeof(sc);
if ((error = copyin(ctl.buf, &sc, ctl.len)) != 0) {
mtx_unlock(&Giant);
return error;
}
switch (st->s_family) {
case AF_INET:
sa = (struct sockaddr *)&sain;
sockaddr_to_netaddr_in(&sc, &sain);
break;
case AF_LOCAL:
sa = (struct sockaddr *)&saun;
sockaddr_to_netaddr_un(&sc, &saun);
break;
default:
mtx_unlock(&Giant);
return ENOSYS;
}
msg.msg_name = sa;
msg.msg_namelen = sasize;
msg.msg_iov = &aiov;
msg.msg_iovlen = 1;
msg.msg_control = 0;
aiov.iov_base = dat.buf;
aiov.iov_len = dat.maxlen;
msg.msg_flags = 0;
error = kern_recvit(td, uap->fd, &msg, UIO_SYSSPACE, NULL);
if (error) {
mtx_unlock(&Giant);
DPRINTF(("getmsg: recvit failed %d\n", error));
return error;
}
sc.cmd = SVR4_TI_RECVFROM_IND;
switch (st->s_family) {
case AF_INET:
sc.len = sasize;
sockaddr_to_netaddr_in(&sc, &sain);
break;
case AF_LOCAL:
sc.len = sasize + 4;
sockaddr_to_netaddr_un(&sc, &saun);
break;
default:
mtx_unlock(&Giant);
return ENOSYS;
}
dat.len = *retval;
fl = 0;
st->s_cmd = sc.cmd;
break;
default:
st->s_cmd = sc.cmd;
if (st->s_cmd == SVR4_TI_CONNECT_REQUEST) {
struct read_args ra;
/* More weirdness: Again, I can't find documentation
* to back this up, but when a process does a generic
* "getmsg()" call it seems that the command field is
* zero and the length of the data area is zero. I
* think processes expect getmsg() to fill in dat.len
* after reading at most dat.maxlen octets from the
* stream. Since we're using sockets I can let
* read() look after it and frob return values
* appropriately (or inappropriately :-)
* -- newton@atdot.dotat.org XXX
*/
ra.fd = uap->fd;
ra.buf = dat.buf;
ra.nbyte = dat.maxlen;
if ((error = read(td, &ra)) != 0) {
mtx_unlock(&Giant);
return error;
}
dat.len = *retval;
*retval = 0;
st->s_cmd = SVR4_TI_SENDTO_REQUEST;
break;
}
mtx_unlock(&Giant);
DPRINTF(("getmsg: Unknown state %x\n", st->s_cmd));
return EINVAL;
}
if (uap->ctl) {
if (ctl.len > sizeof(sc))
ctl.len = sizeof(sc);
if (ctl.len != -1)
error = copyout(&sc, ctl.buf, ctl.len);
if (error == 0)
error = copyout(&ctl, uap->ctl, sizeof(ctl));
}
if (uap->dat) {
if (error == 0)
error = copyout(&dat, uap->dat, sizeof(dat));
}
if (uap->flags) { /* XXX: Need translation */
if (error == 0)
error = copyout(&fl, uap->flags, sizeof(fl));
}
if (error) {
if (afp) {
fdclose(td->td_proc->p_fd, afp, st->s_afd, td);
fdrop(afp, td);
st->s_afd = -1;
}
mtx_unlock(&Giant);
return (error);
}
mtx_unlock(&Giant);
if (afp)
fdrop(afp, td);
*retval = 0;
#ifdef DEBUG_SVR4
show_msg("<getmsg", uap->fd, uap->ctl,
uap->dat, fl);
#endif /* DEBUG_SVR4 */
return error;
}
int svr4_sys_send(td, uap)
struct thread *td;
struct svr4_sys_send_args *uap;
{
struct osend_args osa;
osa.s = uap->s;
osa.buf = uap->buf;
osa.len = uap->len;
osa.flags = uap->flags;
return osend(td, &osa);
}
int svr4_sys_recv(td, uap)
struct thread *td;
struct svr4_sys_recv_args *uap;
{
struct orecv_args ora;
ora.s = uap->s;
ora.buf = uap->buf;
ora.len = uap->len;
ora.flags = uap->flags;
return orecv(td, &ora);
}
/*
* XXX This isn't necessary, but it's handy for inserting debug code into
* sendto(). Let's leave it here for now...
*/
int
svr4_sys_sendto(td, uap)
struct thread *td;
struct svr4_sys_sendto_args *uap;
{
struct sendto_args sa;
sa.s = uap->s;
sa.buf = uap->buf;
sa.len = uap->len;
sa.flags = uap->flags;
sa.to = (caddr_t)uap->to;
sa.tolen = uap->tolen;
DPRINTF(("calling sendto()\n"));
return sendto(td, &sa);
}
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