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e492a4c41a
freebsd/sys/svr4/svr4_stream.c
Brian Feldman 42ebfbf227 Modify ktrace's general I/O tracing, ktrgenio(), to use a struct uio * 
instead of a struct iovec * array and int len.  Get rid of stupidly trying
to allocate all of the memory and copyin()ing the entire iovec[], and
instead just do the proper VOP_WRITE() in ktrwrite() using a copy of
the struct uio that the syscall originally used.

This solves the DoS which could easily be performed; to work around the
DoS, one could also remove "options KTRACE" from the kernel.  This is
a very strong MFC candidate for 4.1.

Found by:	art@OpenBSD.org
2000-07-02 08:08:09 +00:00

2266 lines
48 KiB
C
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/*
* 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.
*
* $FreeBSD$
*/
/*
* Pretend that we have streams...
* Yes, this is gross.
*
* ToDo: The state machine for getmsg needs re-thinking
*/
#define COMPAT_43 1
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/fcntl.h>
#include <sys/filio.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/uio.h>
#include <sys/ktrace.h>
#include <sys/proc.h>
#include <sys/stat.h>
#include <sys/sysproto.h>
#include <svr4/svr4.h>
#include <svr4/svr4_types.h>
#include <svr4/svr4_util.h>
#include <svr4/svr4_signal.h>
#include <svr4/svr4_proto.h>
#include <svr4/svr4_stropts.h>
#include <svr4/svr4_timod.h>
#include <svr4/svr4_sockmod.h>
#include <svr4/svr4_ioctl.h>
#include <svr4/svr4_socket.h>
/* Utils */
static int clean_pipe __P((struct proc *, const char *));
static void getparm __P((struct file *, struct svr4_si_sockparms *));
/* Address Conversions */
static void sockaddr_to_netaddr_in __P((struct svr4_strmcmd *,
const struct sockaddr_in *));
static void sockaddr_to_netaddr_un __P((struct svr4_strmcmd *,
const struct sockaddr_un *));
static void netaddr_to_sockaddr_in __P((struct sockaddr_in *,
const struct svr4_strmcmd *));
static void netaddr_to_sockaddr_un __P((struct sockaddr_un *,
const struct svr4_strmcmd *));
/* stream ioctls */
static int i_nread __P((struct file *, struct proc *, register_t *, int,
u_long, caddr_t));
static int i_fdinsert __P((struct file *, struct proc *, register_t *, int,
u_long, caddr_t));
static int i_str __P((struct file *, struct proc *, register_t *, int,
u_long, caddr_t));
static int i_setsig __P((struct file *, struct proc *, register_t *, int,
u_long, caddr_t));
static int i_getsig __P((struct file *, struct proc *, register_t *, int,
u_long, caddr_t));
static int _i_bind_rsvd __P((struct file *, struct proc *, register_t *, int,
u_long, caddr_t));
static int _i_rele_rsvd __P((struct file *, struct proc *, register_t *, int,
u_long, caddr_t));
/* i_str sockmod calls */
static int sockmod __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
static int si_listen __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
static int si_ogetudata __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
static int si_sockparams __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
static int si_shutdown __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
static int si_getudata __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
/* i_str timod calls */
static int timod __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
static int ti_getinfo __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
static int ti_bind __P((struct file *, int, struct svr4_strioctl *,
struct proc *));
/* infrastructure */
static int svr4_sendit __P((struct proc *p, int s, struct msghdr *mp,
int flags));
static int svr4_recvit __P((struct proc *p, int s, struct msghdr *mp,
caddr_t namelenp));
/* <sigh> Ok, so we shouldn't use sendit() in uipc_syscalls.c because
* it isn't part of a "public" interface; We're supposed to use
* pru_sosend instead. Same goes for recvit()/pru_soreceive() for
* that matter. Solution: Suck sendit()/recvit() into here where we
* can do what we like.
*
* I hate code duplication.
*
* I will take out all the #ifdef COMPAT_OLDSOCK gumph, though.
*/
static int
svr4_sendit(p, s, mp, flags)
register struct proc *p;
int s;
register struct msghdr *mp;
int flags;
{
struct file *fp;
struct uio auio;
register struct iovec *iov;
register int i;
struct mbuf *control;
struct sockaddr *to;
int len, error;
struct socket *so;
#ifdef KTRACE
struct iovec *ktriov = NULL;
struct uio ktruio;
#endif
error = getsock(p->p_fd, s, &fp);
if (error)
return (error);
auio.uio_iov = mp->msg_iov;
auio.uio_iovcnt = mp->msg_iovlen;
auio.uio_segflg = UIO_USERSPACE;
auio.uio_rw = UIO_WRITE;
auio.uio_procp = p;
auio.uio_offset = 0; /* XXX */
auio.uio_resid = 0;
iov = mp->msg_iov;
for (i = 0; i < mp->msg_iovlen; i++, iov++) {
if ((auio.uio_resid += iov->iov_len) < 0)
return (EINVAL);
}
if (mp->msg_name) {
error = getsockaddr(&to, mp->msg_name, mp->msg_namelen);
if (error)
return (error);
} else
to = 0;
if (mp->msg_control) {
if (mp->msg_controllen < sizeof(struct cmsghdr)) {
error = EINVAL;
goto bad;
}
error = sockargs(&control, mp->msg_control,
mp->msg_controllen, MT_CONTROL);
if (error)
goto bad;
} else
control = 0;
#ifdef KTRACE
if (KTRPOINT(p, KTR_GENIO)) {
int iovlen = auio.uio_iovcnt * sizeof (struct iovec);
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
ktruio = auio;
}
#endif
len = auio.uio_resid;
so = (struct socket *)fp->f_data;
error = so->so_proto->pr_usrreqs->pru_sosend(so, to, &auio, 0, control,
flags, p);
if (error) {
if (auio.uio_resid != len && (error == ERESTART ||
error == EINTR || error == EWOULDBLOCK))
error = 0;
if (error == EPIPE)
psignal(p, SIGPIPE);
}
if (error == 0)
p->p_retval[0] = len - auio.uio_resid;
#ifdef KTRACE
if (ktriov != NULL) {
if (error == 0) {
ktruio.uio_iov = ktriov;
ktruio.uio_resid = p->p_retval[0];
ktrgenio(p->p_tracep, s, UIO_WRITE, &ktruio, error);
}
FREE(ktriov, M_TEMP);
}
#endif
bad:
if (to)
FREE(to, M_SONAME);
return (error);
}
static int
svr4_recvit(p, s, mp, namelenp)
register struct proc *p;
int s;
register struct msghdr *mp;
caddr_t namelenp;
{
struct file *fp;
struct uio auio;
register struct iovec *iov;
register int i;
int len, error;
struct mbuf *m, *control = 0;
caddr_t ctlbuf;
struct socket *so;
struct sockaddr *fromsa = 0;
#ifdef KTRACE
struct iovec *ktriov = NULL;
struct uio ktruio;
#endif
error = getsock(p->p_fd, s, &fp);
if (error)
return (error);
auio.uio_iov = mp->msg_iov;
auio.uio_iovcnt = mp->msg_iovlen;
auio.uio_segflg = UIO_USERSPACE;
auio.uio_rw = UIO_READ;
auio.uio_procp = p;
auio.uio_offset = 0; /* XXX */
auio.uio_resid = 0;
iov = mp->msg_iov;
for (i = 0; i < mp->msg_iovlen; i++, iov++) {
if ((auio.uio_resid += iov->iov_len) < 0)
return (EINVAL);
}
#ifdef KTRACE
if (KTRPOINT(p, KTR_GENIO)) {
int iovlen = auio.uio_iovcnt * sizeof (struct iovec);
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
ktruio = auio;
}
#endif
len = auio.uio_resid;
so = (struct socket *)fp->f_data;
error = so->so_proto->pr_usrreqs->pru_soreceive(so, &fromsa, &auio,
(struct mbuf **)0, mp->msg_control ? &control : (struct mbuf **)0,
&mp->msg_flags);
if (error) {
if (auio.uio_resid != len && (error == ERESTART ||
error == EINTR || error == EWOULDBLOCK))
error = 0;
}
#ifdef KTRACE
if (ktriov != NULL) {
if (error == 0) {
ktruio.uio_iov = ktriov;
ktruio.uio_resid = len - auio.uio_resid;
ktrgenio(p->p_tracep, s, UIO_READ, &ktruio, error);
}
FREE(ktriov, M_TEMP);
}
#endif
if (error)
goto out;
p->p_retval[0] = len - auio.uio_resid;
if (mp->msg_name) {
len = mp->msg_namelen;
if (len <= 0 || fromsa == 0)
len = 0;
else {
#ifndef MIN
#define MIN(a,b) ((a)>(b)?(b):(a))
#endif
/* save sa_len before it is destroyed by MSG_COMPAT */
len = MIN(len, fromsa->sa_len);
error = copyout(fromsa,
(caddr_t)mp->msg_name, (unsigned)len);
if (error)
goto out;
}
mp->msg_namelen = len;
if (namelenp &&
(error = copyout((caddr_t)&len, namelenp, sizeof (int)))) {
goto out;
}
}
if (mp->msg_control) {
len = mp->msg_controllen;
m = control;
mp->msg_controllen = 0;
ctlbuf = (caddr_t) mp->msg_control;
while (m && len > 0) {
unsigned int tocopy;
if (len >= m->m_len)
tocopy = m->m_len;
else {
mp->msg_flags |= MSG_CTRUNC;
tocopy = len;
}
if ((error = copyout((caddr_t)mtod(m, caddr_t),
ctlbuf, tocopy)) != 0)
goto out;
ctlbuf += tocopy;
len -= tocopy;
m = m->m_next;
}
mp->msg_controllen = ctlbuf - (caddr_t)mp->msg_control;
}
out:
if (fromsa)
FREE(fromsa, M_SONAME);
if (control)
m_freem(control);
return (error);
}
#ifdef DEBUG_SVR4
static void bufprint __P((u_char *, size_t));
static int show_ioc __P((const char *, struct svr4_strioctl *));
static int show_strbuf __P((struct svr4_strbuf *));
static void show_msg __P((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 = (u_char *) malloc(ioc->len, M_TEMP, M_WAITOK);
int error;
uprintf("%s cmd = %ld, timeout = %d, len = %d, buf = %p { ",
str, ioc->cmd, ioc->timeout, ioc->len, ioc->buf);
if ((error = copyin(ioc->buf, ptr, ioc->len)) != 0) {
free((char *) ptr, M_TEMP);
return error;
}
bufprint(ptr, ioc->len);
uprintf("}\n");
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 < 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(p, path)
struct proc *p;
const char *path;
{
struct lstat_args la;
struct unlink_args ua;
struct stat st;
int error;
caddr_t sg = stackgap_init();
size_t l = strlen(path) + 1;
void *tpath;
tpath = stackgap_alloc(&sg, l);
SCARG(&la, ub) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = copyout(path, tpath, l)) != 0)
return error;
SCARG(&la, path) = tpath;
if ((error = lstat(p, &la)) != 0)
return 0;
if ((error = copyin(SCARG(&la, ub), &st, sizeof(st))) != 0)
return 0;
/*
* 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;
SCARG(&ua, path) = SCARG(&la, path);
if ((error = unlink(p, &ua)) != 0) {
DPRINTF(("clean_pipe: unlink failed %d\n", error));
return error;
}
return 0;
}
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 = svr4_stream_get(fp);
struct socket *so = (struct socket *) fp->f_data;
if (st == NULL)
return;
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, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
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, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
struct svr4_si_sockparms pa;
getparm(fp, &pa);
return copyout(&pa, ioc->buf, sizeof(pa));
}
static int
si_listen(fp, fd, ioc, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
int error;
struct svr4_strm *st = svr4_stream_get(fp);
struct svr4_strmcmd lst;
struct listen_args la;
if (st == NULL)
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...
*/
SCARG(&la, s) = fd;
DPRINTF(("SI_LISTEN: fileno %d backlog = %d\n", fd, 5));
SCARG(&la, backlog) = 5;
if ((error = listen(p, &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, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
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, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
int error;
struct shutdown_args ap;
if (ioc->len != sizeof(SCARG(&ap, how))) {
DPRINTF(("SI_SHUTDOWN: Wrong size %d != %d\n",
sizeof(SCARG(&ap, how)), ioc->len));
return EINVAL;
}
if ((error = copyin(ioc->buf, &SCARG(&ap, how), ioc->len)) != 0)
return error;
SCARG(&ap, s) = fd;
return shutdown(p, &ap);
}
static int
sockmod(fp, fd, ioc, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
switch (ioc->cmd) {
case SVR4_SI_OGETUDATA:
DPRINTF(("SI_OGETUDATA\n"));
return si_ogetudata(fp, fd, ioc, p);
case SVR4_SI_SHUTDOWN:
DPRINTF(("SI_SHUTDOWN\n"));
return si_shutdown(fp, fd, ioc, p);
case SVR4_SI_LISTEN:
DPRINTF(("SI_LISTEN\n"));
return si_listen(fp, fd, ioc, p);
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, p);
case SVR4_SI_GETUDATA:
DPRINTF(("SI_GETUDATA\n"));
return si_getudata(fp, fd, ioc, p);
default:
DPRINTF(("Unknown sockmod ioctl %lx\n", ioc->cmd));
return 0;
}
}
static int
ti_getinfo(fp, fd, ioc, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
int error;
struct svr4_infocmd info;
memset(&info, 0, sizeof(info));
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, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
int error;
struct svr4_strm *st = svr4_stream_get(fp);
struct sockaddr_in sain;
struct sockaddr_un saun;
caddr_t sg;
void *skp, *sup = NULL;
int sasize;
struct svr4_strmcmd bnd;
struct bind_args ba;
if (st == NULL) {
DPRINTF(("ti_bind: bad file descriptor\n"));
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 = &sain;
sasize = sizeof(sain);
if (bnd.offs == 0)
goto reply;
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 = &saun;
sasize = sizeof(saun);
if (bnd.offs == 0)
goto reply;
netaddr_to_sockaddr_un(&saun, &bnd);
if (saun.sun_path[0] == '\0')
goto reply;
DPRINTF(("TI_BIND: fam %d, path %s\n",
saun.sun_family, saun.sun_path));
if ((error = clean_pipe(p, 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;
}
sg = stackgap_init();
sup = stackgap_alloc(&sg, sasize);
if ((error = copyout(skp, sup, sasize)) != 0)
return error;
SCARG(&ba, s) = fd;
DPRINTF(("TI_BIND: fileno %d\n", fd));
SCARG(&ba, name) = (void *) sup;
SCARG(&ba, namelen) = sasize;
if ((error = bind(p, &ba)) != 0) {
DPRINTF(("TI_BIND: bind failed %d\n", error));
return error;
}
reply:
if (sup == NULL) {
memset(&bnd, 0, sizeof(bnd));
bnd.len = sasize + 4;
bnd.offs = 0x10; /* XXX */
}
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, p)
struct file *fp;
int fd;
struct svr4_strioctl *ioc;
struct proc *p;
{
switch (ioc->cmd) {
case SVR4_TI_GETINFO:
DPRINTF(("TI_GETINFO\n"));
return ti_getinfo(fp, fd, ioc, p);
case SVR4_TI_OPTMGMT:
DPRINTF(("TI_OPTMGMT\n"));
return 0;
case SVR4_TI_BIND:
DPRINTF(("TI_BIND\n"));
return ti_bind(fp, fd, ioc, p);
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, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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;
void *skp, *sup;
struct sockaddr_in sain;
struct sockaddr_un saun;
struct svr4_strmcmd sc;
int sasize;
caddr_t sg;
int *lenp;
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:
skp = &sain;
sasize = sizeof(sain);
break;
case AF_LOCAL:
skp = &saun;
sasize = sizeof(saun);
break;
default:
DPRINTF(("ti_ioctl: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
sg = stackgap_init();
sup = stackgap_alloc(&sg, sasize);
lenp = stackgap_alloc(&sg, sizeof(*lenp));
if ((error = copyout(&sasize, lenp, sizeof(*lenp))) != 0) {
DPRINTF(("ti_ioctl: error copying out lenp\n"));
return error;
}
switch (cmd) {
case SVR4_TI_GETMYNAME:
DPRINTF(("TI_GETMYNAME\n"));
{
struct getsockname_args ap;
SCARG(&ap, fdes) = fd;
SCARG(&ap, asa) = sup;
SCARG(&ap, alen) = lenp;
if ((error = getsockname(p, &ap)) != 0) {
DPRINTF(("ti_ioctl: getsockname error\n"));
return error;
}
}
break;
case SVR4_TI_GETPEERNAME:
DPRINTF(("TI_GETPEERNAME\n"));
{
struct getpeername_args ap;
SCARG(&ap, fdes) = fd;
SCARG(&ap, asa) = sup;
SCARG(&ap, alen) = lenp;
if ((error = getpeername(p, &ap)) != 0) {
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 ((error = copyin(sup, skp, sasize)) != 0) {
DPRINTF(("ti_ioctl: error copying in socket data\n"));
return error;
}
if ((error = copyin(lenp, &sasize, sizeof(*lenp))) != 0) {
DPRINTF(("ti_ioctl: error copying in socket size\n"));
return error;
}
switch (st->s_family) {
case AF_INET:
sockaddr_to_netaddr_in(&sc, &sain);
skb.len = sasize;
break;
case AF_LOCAL:
sockaddr_to_netaddr_un(&sc, &saun);
skb.len = sasize + 4;
break;
default:
return ENOSYS;
}
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, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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, p)) != 0)
return error;
if (nread != 0)
*retval = 1;
else
*retval = 0;
return copyout(&nread, dat, sizeof(nread));
}
static int
i_fdinsert(fp, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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;
struct close_args clp;
if (st == NULL) {
DPRINTF(("fdinsert: bad file type\n"));
return EINVAL;
}
if (st->s_afd == -1) {
DPRINTF(("fdinsert: accept fd not found\n"));
return ENOENT;
}
if ((error = copyin(dat, &fdi, sizeof(fdi))) != 0) {
DPRINTF(("fdinsert: copyin failed %d\n", error));
return error;
}
SCARG(&d2p, from) = st->s_afd;
SCARG(&d2p, to) = fdi.fd;
if ((error = dup2(p, &d2p)) != 0) {
DPRINTF(("fdinsert: dup2(%d, %d) failed %d\n",
st->s_afd, fdi.fd, error));
return error;
}
SCARG(&clp, fd) = st->s_afd;
if ((error = close(p, &clp)) != 0) {
DPRINTF(("fdinsert: close(%d) failed %d\n",
st->s_afd, error));
return error;
}
st->s_afd = -1;
*retval = 0;
return 0;
}
static int
_i_bind_rsvd(fp, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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.
*/
SCARG(&ap, path) = dat;
SCARG(&ap, mode) = S_IFIFO;
return mkfifo(p, &ap);
}
static int
_i_rele_rsvd(fp, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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.
*/
SCARG(&ap, path) = dat;
return unlink(p, &ap);
}
static int
i_str(fp, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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, p)) != 0)
return error;
break;
case SVR4_TIMOD:
if ((error = timod(fp, fd, &ioc, p)) != 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, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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.
*/
struct fcntl_args fa;
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 */
SCARG(&fa, fd) = fd;
SCARG(&fa, cmd) = F_GETFL;
if ((error = fcntl(p, &fa)) != 0)
return error;
oflags = p->p_retval[0];
/* update the flags */
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;
}
/* set the new flags, if changed */
if (flags != oflags) {
SCARG(&fa, cmd) = F_SETFL;
SCARG(&fa, arg) = (long) flags;
if ((error = fcntl(p, &fa)) != 0)
return error;
flags = p->p_retval[0];
}
/* set up SIGIO receiver if needed */
if (dat != NULL) {
SCARG(&fa, cmd) = F_SETOWN;
SCARG(&fa, arg) = (long) p->p_pid;
return fcntl(p, &fa);
}
return 0;
}
static int
i_getsig(fp, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
register_t *retval;
int fd;
u_long cmd;
caddr_t dat;
{
int error;
if (dat != NULL) {
struct svr4_strm *st = svr4_stream_get(fp);
if (st == NULL) {
DPRINTF(("i_getsig: bad file descriptor\n"));
return EINVAL;
}
if ((error = copyout(&st->s_eventmask, dat,
sizeof(st->s_eventmask))) != 0) {
DPRINTF(("i_getsig: bad eventmask pointer\n"));
return error;
}
}
return 0;
}
int
svr4_stream_ioctl(fp, p, retval, fd, cmd, dat)
struct file *fp;
struct proc *p;
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, p, retval, fd, cmd, dat);
case SVR4_I_PUSH:
DPRINTF(("I_PUSH %x\n", dat));
#if defined(DEBUG_SVR4)
show_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, p, retval, fd, cmd, dat);
case SVR4_I_SETSIG:
DPRINTF(("I_SETSIG\n"));
return i_setsig(fp, p, retval, fd, cmd, dat);
case SVR4_I_GETSIG:
DPRINTF(("I_GETSIG\n"));
return i_getsig(fp, p, 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, p, 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, p, retval, fd, cmd, dat);
case SVR4__I_RELE_RSVD:
DPRINTF(("_I_RELE_RSVD\n"));
return _i_rele_rsvd(fp, p, retval, fd, cmd, dat);
default:
DPRINTF(("unimpl cmd = %lx\n", cmd));
break;
}
return 0;
}
int
svr4_sys_putmsg(p, uap)
register struct proc *p;
struct svr4_sys_putmsg_args *uap;
{
struct filedesc *fdp = p->p_fd;
struct file *fp;
struct svr4_strbuf dat, ctl;
struct svr4_strmcmd sc;
struct sockaddr_in sain;
struct sockaddr_un saun;
void *skp, *sup;
int sasize, *retval;
struct svr4_strm *st;
int error;
caddr_t sg;
retval = p->p_retval;
fp = fdp->fd_ofiles[SCARG(uap, fd)];
if (((u_int)SCARG(uap, fd) >= fdp->fd_nfiles) || (fp == NULL)) {
#ifdef DEBUG_SVR4
uprintf("putmsg: bad fp\n");
#endif
return EBADF;
}
#ifdef DEBUG_SVR4
show_msg(">putmsg", SCARG(uap, fd), SCARG(uap, ctl),
SCARG(uap, dat), SCARG(uap, flags));
#endif /* DEBUG_SVR4 */
if (((u_int)SCARG(uap, fd) >= fdp->fd_nfiles) || (fp == NULL)) {
#ifdef DEBUG_SVR4
uprintf("putmsg: bad fp(2)\n");
#endif
return EBADF;
}
if (SCARG(uap, ctl) != NULL) {
if ((error = copyin(SCARG(uap, ctl), &ctl, sizeof(ctl))) != 0) {
#ifdef DEBUG_SVR4
uprintf("putmsg: copyin(): %d\n", error);
#endif
return error;
}
}
else
ctl.len = -1;
if (SCARG(uap, dat) != NULL) {
if ((error = copyin(SCARG(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 > 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"));
SCARG(&wa, fd) = SCARG(uap, fd);
SCARG(&wa, buf) = dat.buf;
SCARG(&wa, nbyte) = dat.len;
return write(p, &wa);
}
DPRINTF(("putmsg: Invalid inet length %ld\n", sc.len));
return EINVAL;
}
netaddr_to_sockaddr_in(&sain, &sc);
skp = &sain;
sasize = sizeof(sain);
error = sain.sin_family != st->s_family;
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 */
udev_t *dev = SVR4_ADDROF(&sc);
ino_t *ino = (ino_t *) &dev[1];
skp = svr4_find_socket(p, fp, *dev, *ino);
if (skp == NULL) {
skp = &saun;
/* I guess we have it by name */
netaddr_to_sockaddr_un(skp, &sc);
}
sasize = sizeof(saun);
}
break;
default:
DPRINTF(("putmsg: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
sg = stackgap_init();
sup = stackgap_alloc(&sg, sasize);
if ((error = copyout(skp, sup, sasize)) != 0)
return error;
switch (st->s_cmd = sc.cmd) {
case SVR4_TI_CONNECT_REQUEST: /* connect */
{
struct connect_args co;
SCARG(&co, s) = SCARG(uap, fd);
SCARG(&co, name) = (void *) sup;
SCARG(&co, namelen) = (int) sasize;
return connect(p, &co);
}
case SVR4_TI_SENDTO_REQUEST: /* sendto */
{
struct msghdr msg;
struct iovec aiov;
msg.msg_name = (caddr_t) sup;
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;
#if 0
error = so->so_proto->pr_usrreqs->pru_sosend(so, 0,
uio, 0, 0, 0, uio->uio_procp);
#endif
error = svr4_sendit(p, SCARG(uap, fd), &msg,
SCARG(uap, flags));
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(p, uap)
register struct proc *p;
struct svr4_sys_getmsg_args *uap;
{
struct filedesc *fdp = p->p_fd;
struct file *fp;
struct getpeername_args ga;
struct accept_args aa;
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;
void *skp, *sup;
int sasize;
struct svr4_strm *st;
int *flen;
int fl;
caddr_t sg;
retval = p->p_retval;
fp = fdp->fd_ofiles[SCARG(uap, fd)];
if (((u_int)SCARG(uap, fd) >= fdp->fd_nfiles) || (fp == NULL))
return EBADF;
memset(&sc, 0, sizeof(sc));
#ifdef DEBUG_SVR4
show_msg(">getmsg", SCARG(uap, fd), SCARG(uap, ctl),
SCARG(uap, dat), 0);
#endif /* DEBUG_SVR4 */
if (((u_int)SCARG(uap, fd) >= fdp->fd_nfiles) || (fp == NULL))
return EBADF;
if (SCARG(uap, ctl) != NULL) {
if ((error = copyin(SCARG(uap, ctl), &ctl, sizeof(ctl))) != 0)
return error;
}
else {
ctl.len = -1;
ctl.maxlen = 0;
}
if (SCARG(uap, dat) != NULL) {
if ((error = copyin(SCARG(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:
skp = &sain;
sasize = sizeof(sain);
break;
case AF_LOCAL:
skp = &saun;
sasize = sizeof(saun);
break;
default:
DPRINTF(("getmsg: Unsupported address family %d\n",
st->s_family));
return ENOSYS;
}
sg = stackgap_init();
sup = stackgap_alloc(&sg, sasize);
flen = (int *) stackgap_alloc(&sg, sizeof(*flen));
fl = sasize;
if ((error = copyout(&fl, flen, sizeof(fl))) != 0)
return error;
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.
*/
SCARG(&ga, fdes) = SCARG(uap, fd);
SCARG(&ga, asa) = (void *) sup;
SCARG(&ga, alen) = flen;
if ((error = getpeername(p, &ga)) != 0) {
DPRINTF(("getmsg: getpeername failed %d\n", error));
return error;
}
if ((error = copyin(sup, skp, sasize)) != 0)
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, &sain);
break;
case AF_LOCAL:
sc.len = sasize + 4;
sockaddr_to_netaddr_un(&sc, &saun);
break;
default:
return ENOSYS;
}
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...
*/
SCARG(&aa, s) = SCARG(uap, fd);
SCARG(&aa, name) = (void *) sup;
SCARG(&aa, anamelen) = flen;
if ((error = accept(p, &aa)) != 0) {
DPRINTF(("getmsg: accept failed %d\n", error));
return error;
}
st->s_afd = *retval;
DPRINTF(("getmsg: Accept fd = %d\n", st->s_afd));
if ((error = copyin(sup, skp, sasize)) != 0)
return error;
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, &sain);
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:
return ENOSYS;
}
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 ((error = copyin(ctl.buf, &sc, ctl.len)) != 0)
return error;
switch (st->s_family) {
case AF_INET:
sockaddr_to_netaddr_in(&sc, &sain);
break;
case AF_LOCAL:
sockaddr_to_netaddr_un(&sc, &saun);
break;
default:
return ENOSYS;
}
msg.msg_name = (caddr_t) sup;
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 = svr4_recvit(p, SCARG(uap, fd), &msg, (caddr_t) flen);
if (error) {
DPRINTF(("getmsg: recvit failed %d\n", error));
return error;
}
if ((error = copyin(msg.msg_name, skp, sasize)) != 0)
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:
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 wierdness: 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
*/
SCARG(&ra, fd) = SCARG(uap, fd);
SCARG(&ra, buf) = dat.buf;
SCARG(&ra, nbyte) = dat.maxlen;
if ((error = read(p, &ra)) != 0) {
return error;
}
dat.len = *retval;
*retval = 0;
st->s_cmd = SVR4_TI_SENDTO_REQUEST;
break;
}
DPRINTF(("getmsg: Unknown state %x\n", st->s_cmd));
return EINVAL;
}
if (SCARG(uap, ctl)) {
if (ctl.len != -1)
if ((error = copyout(&sc, ctl.buf, ctl.len)) != 0)
return error;
if ((error = copyout(&ctl, SCARG(uap, ctl), sizeof(ctl))) != 0)
return error;
}
if (SCARG(uap, dat)) {
if ((error = copyout(&dat, SCARG(uap, dat), sizeof(dat))) != 0)
return error;
}
if (SCARG(uap, flags)) { /* XXX: Need translation */
if ((error = copyout(&fl, SCARG(uap, flags), sizeof(fl))) != 0)
return error;
}
*retval = 0;
#ifdef DEBUG_SVR4
show_msg("<getmsg", SCARG(uap, fd), SCARG(uap, ctl),
SCARG(uap, dat), fl);
#endif /* DEBUG_SVR4 */
return error;
}
int svr4_sys_send(p, uap)
struct proc *p;
struct svr4_sys_send_args *uap;
{
struct osend_args osa;
SCARG(&osa, s) = SCARG(uap, s);
SCARG(&osa, buf) = SCARG(uap, buf);
SCARG(&osa, len) = SCARG(uap, len);
SCARG(&osa, flags) = SCARG(uap, flags);
return osend(p, &osa);
}
int svr4_sys_recv(p, uap)
struct proc *p;
struct svr4_sys_recv_args *uap;
{
struct orecv_args ora;
SCARG(&ora, s) = SCARG(uap, s);
SCARG(&ora, buf) = SCARG(uap, buf);
SCARG(&ora, len) = SCARG(uap, len);
SCARG(&ora, flags) = SCARG(uap, flags);
return orecv(p, &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(p, uap)
struct proc *p;
struct svr4_sys_sendto_args *uap;
{
struct sendto_args sa;
SCARG(&sa, s) = SCARG(uap, s);
SCARG(&sa, buf) = SCARG(uap, buf);
SCARG(&sa, len) = SCARG(uap, len);
SCARG(&sa, flags) = SCARG(uap, flags);
SCARG(&sa, to) = SCARG(uap, to);
SCARG(&sa, tolen) = SCARG(uap, tolen);
DPRINTF(("calling sendto()\n"));
return sendto(p, &sa);
}
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