/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* 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"
#include <linux/aio_abi.h>
SYS_FUNC(io_setup)
{
if (entering(tcp))
tprintf("%u, ", (unsigned int) tcp->u_arg[0]);
else
printnum_ulong(tcp, tcp->u_arg[1]);
return 0;
}
SYS_FUNC(io_destroy)
{
tprintf("%lu", tcp->u_arg[0]);
return RVAL_DECODED;
}
enum iocb_sub {
SUB_NONE, SUB_COMMON, SUB_VECTOR
};
static enum iocb_sub
tprint_lio_opcode(unsigned cmd)
{
static const struct {
const char *name;
enum iocb_sub sub;
} cmds[] = {
{ "pread", SUB_COMMON },
{ "pwrite", SUB_COMMON },
{ "fsync", SUB_NONE },
{ "fdsync", SUB_NONE },
{ "preadx", SUB_NONE },
{ "poll", SUB_NONE },
{ "noop", SUB_NONE },
{ "preadv", SUB_VECTOR },
{ "pwritev", SUB_VECTOR },
};
if (cmd < ARRAY_SIZE(cmds)) {
tprints(cmds[cmd].name);
return cmds[cmd].sub;
}
tprintf("%u /* SUB_??? */", cmd);
return SUB_NONE;
}
static void
print_common_flags(const struct iocb *cb)
{
/* IOCB_FLAG_RESFD is available since v2.6.22-rc1~47 */
#ifdef IOCB_FLAG_RESFD
if (cb->aio_flags & IOCB_FLAG_RESFD)
tprintf(", resfd=%d", cb->aio_resfd);
if (cb->aio_flags & ~IOCB_FLAG_RESFD)
tprintf(", flags=%x", cb->aio_flags);
#endif
}
static bool
iocb_is_valid(const struct iocb *cb)
{
return cb->aio_buf == (unsigned long) cb->aio_buf &&
cb->aio_nbytes == (size_t) cb->aio_nbytes &&
(ssize_t) cb->aio_nbytes >= 0;
}
static enum iocb_sub
print_iocb_header(const struct iocb *cb)
{
enum iocb_sub sub;
if (cb->aio_data)
tprintf("data=%#" PRIx64 ", ",
(uint64_t) cb->aio_data);
if (cb->aio_key)
tprintf("key=%u, ", cb->aio_key);
sub = tprint_lio_opcode(cb->aio_lio_opcode);
if (cb->aio_reqprio)
tprintf(", reqprio=%hd", cb->aio_reqprio);
tprintf(", fildes=%d", cb->aio_fildes);
return sub;
}
static void
print_iocb(struct tcb *tcp, const struct iocb *cb)
{
enum iocb_sub sub = print_iocb_header(cb);
switch (sub) {
case SUB_COMMON:
if (cb->aio_lio_opcode == 1 && iocb_is_valid(cb)) {
tprints(", str=");
printstr(tcp, (unsigned long) cb->aio_buf,
(unsigned long) cb->aio_nbytes);
} else {
tprintf(", buf=%#" PRIx64, (uint64_t) cb->aio_buf);
}
tprintf(", nbytes=%" PRIu64 ", offset=%" PRId64,
(uint64_t) cb->aio_nbytes, (int64_t) cb->aio_offset);
print_common_flags(cb);
break;
case SUB_VECTOR:
if (iocb_is_valid(cb)) {
tprints(", iovec=");
tprint_iov(tcp, cb->aio_nbytes, cb->aio_buf,
cb->aio_lio_opcode == 8);
} else {
tprintf(", buf=%#" PRIx64 ", nbytes=%" PRIu64,
(uint64_t) cb->aio_buf,
(uint64_t) cb->aio_nbytes);
}
tprintf(", offset=%" PRId64, (int64_t) cb->aio_offset);
print_common_flags(cb);
break;
case SUB_NONE:
break;
}
}
SYS_FUNC(io_submit)
{
long nr = tcp->u_arg[1];
/* if nr <= 0, we end up printing just "[]" */
tprintf("%lu, %ld, [", tcp->u_arg[0], nr);
{
long i;
long iocbs = tcp->u_arg[2];
for (i = 0; i < nr; ++i, iocbs += current_wordsize) {
unsigned long iocbp;
struct iocb cb;
if (i)
tprints(", ");
if (umove_ulong_or_printaddr(tcp, iocbs, &iocbp)) {
/*
* No point in trying to read the whole array
* because nr can be ridiculously large.
*/
break;
}
tprints("{");
if (!umove_or_printaddr(tcp, iocbp, &cb))
print_iocb(tcp, &cb);
tprints("}");
}
}
tprints("]");
return RVAL_DECODED;
}
static int
print_io_event(struct tcb *tcp, const long addr)
{
struct io_event event;
if (umove_or_printaddr(tcp, addr, &event))
return -1;
tprintf("{data=%#" PRIx64 ", obj=%#" PRIx64
", res=%" PRId64 ", res2=%" PRId64 "}",
(uint64_t) event.data, (uint64_t) event.obj,
(int64_t) event.res, (int64_t) event.res2);
return 0;
}
SYS_FUNC(io_cancel)
{
if (entering(tcp)) {
tprintf("%lu, ", tcp->u_arg[0]);
struct iocb cb;
if (!umove_or_printaddr(tcp, tcp->u_arg[1], &cb)) {
tprints("{");
print_iocb_header(&cb);
tprints("}");
}
tprints(", ");
} else {
print_io_event(tcp, tcp->u_arg[2]);
}
return 0;
}
SYS_FUNC(io_getevents)
{
if (entering(tcp)) {
tprintf("%lu, %ld, %ld, ",
tcp->u_arg[0], tcp->u_arg[1], tcp->u_arg[2]);
} else {
if (tcp->u_rval == 0) {
tprints("[]");
} else {
struct io_event *events = (void *)tcp->u_arg[3];
long i, nr = tcp->u_rval;
for (i = 0; i < nr; i++, events++) {
if (i == 0)
tprints("[");
else
tprints(", ");
if (print_io_event(tcp, (long)events))
break;
}
tprints("], ");
}
/*
* Since the timeout parameter is read by the kernel
* on entering syscall, it has to be decoded the same way
* whether the syscall has failed or not.
*/
temporarily_clear_syserror(tcp);
print_timespec(tcp, tcp->u_arg[4]);
restore_cleared_syserror(tcp);
}
return 0;
}