/*
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* 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 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.
*/
#include "defs.h"
#if defined HAVE_POLL_H
# include <poll.h>
#elif defined HAVE_SYS_POLL_H
# include <sys/poll.h>
#endif
#ifdef HAVE_SYS_CONF_H
# include <sys/conf.h>
#endif
/* Who has STREAMS syscalls?
* Linux hasn't. Solaris has (had?).
* Just in case I miss something, retain in for Sparc...
*/
#if defined(SPARC) || defined(SPARC64)
# ifdef HAVE_STROPTS_H
# include <stropts.h>
# else
# define RS_HIPRI 1
struct strbuf {
int maxlen; /* no. of bytes in buffer */
int len; /* no. of bytes returned */
const char *buf; /* pointer to data */
};
# define MORECTL 1
# define MOREDATA 2
# endif
#include "xlat/msgflags.h"
static void
printstrbuf(struct tcb *tcp, struct strbuf *sbp, int getting)
{
if (sbp->maxlen == -1 && getting)
tprints("{maxlen=-1}");
else {
tprints("{");
if (getting)
tprintf("maxlen=%d, ", sbp->maxlen);
tprintf("len=%d, buf=", sbp->len);
printstr(tcp, (unsigned long) sbp->buf, sbp->len);
tprints("}");
}
}
static void
printstrbufarg(struct tcb *tcp, long arg, int getting)
{
struct strbuf buf;
if (arg == 0)
tprints("NULL");
else if (umove(tcp, arg, &buf) < 0)
tprints("{...}");
else
printstrbuf(tcp, &buf, getting);
tprints(", ");
}
SYS_FUNC(putmsg)
{
int i;
if (entering(tcp)) {
/* fd */
tprintf("%ld, ", tcp->u_arg[0]);
/* control and data */
for (i = 1; i < 3; i++)
printstrbufarg(tcp, tcp->u_arg[i], 0);
/* flags */
printflags(msgflags, tcp->u_arg[3], "RS_???");
}
return 0;
}
SYS_FUNC(getmsg)
{
int i, flags;
if (entering(tcp)) {
/* fd */
tprintf("%lu, ", tcp->u_arg[0]);
} else {
if (syserror(tcp)) {
tprintf("%#lx, %#lx, %#lx",
tcp->u_arg[1], tcp->u_arg[2], tcp->u_arg[3]);
return 0;
}
/* control and data */
for (i = 1; i < 3; i++)
printstrbufarg(tcp, tcp->u_arg[i], 1);
/* pointer to flags */
if (tcp->u_arg[3] == 0)
tprints("NULL");
else if (umove(tcp, tcp->u_arg[3], &flags) < 0)
tprints("[?]");
else {
tprints("[");
printflags(msgflags, flags, "RS_???");
tprints("]");
}
/* decode return value */
switch (tcp->u_rval) {
case MORECTL:
tcp->auxstr = "MORECTL";
break;
case MORECTL|MOREDATA:
tcp->auxstr = "MORECTL|MOREDATA";
break;
case MOREDATA:
tcp->auxstr = "MORECTL";
break;
default:
tcp->auxstr = NULL;
break;
}
}
return RVAL_HEX | RVAL_STR;
}
# if defined SYS_putpmsg || defined SYS_getpmsg
#include "xlat/pmsgflags.h"
# ifdef SYS_putpmsg
SYS_FUNC(putpmsg)
{
int i;
if (entering(tcp)) {
/* fd */
tprintf("%ld, ", tcp->u_arg[0]);
/* control and data */
for (i = 1; i < 3; i++)
printstrbufarg(tcp, tcp->u_arg[i], 0);
/* band */
tprintf("%ld, ", tcp->u_arg[3]);
/* flags */
printflags(pmsgflags, tcp->u_arg[4], "MSG_???");
}
return 0;
}
# endif
# ifdef SYS_getpmsg
SYS_FUNC(getpmsg)
{
int i, flags;
if (entering(tcp)) {
/* fd */
tprintf("%lu, ", tcp->u_arg[0]);
} else {
if (syserror(tcp)) {
tprintf("%#lx, %#lx, %#lx, %#lx", tcp->u_arg[1],
tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[4]);
return 0;
}
/* control and data */
for (i = 1; i < 3; i++)
printstrbufarg(tcp, tcp->u_arg[i], 1);
/* pointer to band */
printnum_int(tcp, tcp->u_arg[3], "%d");
tprints(", ");
/* pointer to flags */
if (tcp->u_arg[4] == 0)
tprints("NULL");
else if (umove(tcp, tcp->u_arg[4], &flags) < 0)
tprints("[?]");
else {
tprints("[");
printflags(pmsgflags, flags, "MSG_???");
tprints("]");
}
/* decode return value */
switch (tcp->u_rval) {
case MORECTL:
tcp->auxstr = "MORECTL";
break;
case MORECTL|MOREDATA:
tcp->auxstr = "MORECTL|MOREDATA";
break;
case MOREDATA:
tcp->auxstr = "MORECTL";
break;
default:
tcp->auxstr = NULL;
break;
}
}
return RVAL_HEX | RVAL_STR;
}
# endif
# endif /* getpmsg/putpmsg */
#endif /* STREAMS syscalls support */
#ifdef HAVE_SYS_POLL_H
#include "xlat/pollflags.h"
static int
decode_poll(struct tcb *tcp, long pts)
{
struct pollfd fds;
unsigned nfds;
unsigned long size, start, cur, end, abbrev_end;
int failed = 0;
if (entering(tcp)) {
nfds = tcp->u_arg[1];
size = sizeof(fds) * nfds;
start = tcp->u_arg[0];
end = start + size;
if (nfds == 0 || size / sizeof(fds) != nfds || end < start) {
tprintf("%#lx, %d, ",
tcp->u_arg[0], nfds);
return 0;
}
if (abbrev(tcp)) {
abbrev_end = start + max_strlen * sizeof(fds);
if (abbrev_end < start)
abbrev_end = end;
} else {
abbrev_end = end;
}
tprints("[");
for (cur = start; cur < end; cur += sizeof(fds)) {
if (cur > start)
tprints(", ");
if (cur >= abbrev_end) {
tprints("...");
break;
}
if (umoven(tcp, cur, sizeof fds, &fds) < 0) {
tprints("?");
failed = 1;
break;
}
if (fds.fd < 0) {
tprintf("{fd=%d}", fds.fd);
continue;
}
tprints("{fd=");
printfd(tcp, fds.fd);
tprints(", events=");
printflags(pollflags, fds.events, "POLL???");
tprints("}");
}
tprints("]");
if (failed)
tprintf(" %#lx", start);
tprintf(", %d, ", nfds);
return 0;
} else {
static char outstr[1024];
char *outptr;
#define end_outstr (outstr + sizeof(outstr))
const char *flagstr;
if (syserror(tcp))
return 0;
if (tcp->u_rval == 0) {
tcp->auxstr = "Timeout";
return RVAL_STR;
}
nfds = tcp->u_arg[1];
size = sizeof(fds) * nfds;
start = tcp->u_arg[0];
end = start + size;
if (nfds == 0 || size / sizeof(fds) != nfds || end < start)
return 0;
if (abbrev(tcp)) {
abbrev_end = start + max_strlen * sizeof(fds);
if (abbrev_end < start)
abbrev_end = end;
} else {
abbrev_end = end;
}
outptr = outstr;
for (cur = start; cur < end; cur += sizeof(fds)) {
if (umoven(tcp, cur, sizeof fds, &fds) < 0) {
if (outptr < end_outstr - 2)
*outptr++ = '?';
failed = 1;
break;
}
if (!fds.revents)
continue;
if (outptr == outstr) {
*outptr++ = '[';
} else {
if (outptr < end_outstr - 3)
outptr = stpcpy(outptr, ", ");
}
if (cur >= abbrev_end) {
if (outptr < end_outstr - 4)
outptr = stpcpy(outptr, "...");
break;
}
if (outptr < end_outstr - (sizeof("{fd=%d, revents=") + sizeof(int)*3) + 1)
outptr += sprintf(outptr, "{fd=%d, revents=", fds.fd);
flagstr = sprintflags("", pollflags, fds.revents);
if (outptr < end_outstr - (strlen(flagstr) + 2)) {
outptr = stpcpy(outptr, flagstr);
*outptr++ = '}';
}
}
if (failed)
return 0;
if (outptr != outstr /* && outptr < end_outstr - 1 (always true)*/)
*outptr++ = ']';
*outptr = '\0';
if (pts) {
if (outptr < end_outstr - (10 + TIMESPEC_TEXT_BUFSIZE)) {
outptr = stpcpy(outptr, outptr == outstr ? "left " : ", left ");
sprint_timespec(outptr, tcp, pts);
}
}
if (outptr == outstr)
return 0;
tcp->auxstr = outstr;
return RVAL_STR;
#undef end_outstr
}
}
SYS_FUNC(poll)
{
int rc = decode_poll(tcp, 0);
if (entering(tcp)) {
# ifdef INFTIM
if (tcp->u_arg[2] == INFTIM)
tprints("INFTIM");
else
# endif
tprintf("%ld", tcp->u_arg[2]);
}
return rc;
}
SYS_FUNC(ppoll)
{
int rc = decode_poll(tcp, tcp->u_arg[2]);
if (entering(tcp)) {
print_timespec(tcp, tcp->u_arg[2]);
tprints(", ");
/* NB: kernel requires arg[4] == NSIG / 8 */
print_sigset_addr_len(tcp, tcp->u_arg[3], tcp->u_arg[4]);
tprintf(", %lu", tcp->u_arg[4]);
}
return rc;
}
#else /* !HAVE_SYS_POLL_H */
SYS_FUNC(poll)
{
return 0;
}
#endif