314 lines
7.4 KiB
C
314 lines
7.4 KiB
C
/*
|
|
* 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 <fcntl.h>
|
|
#include <sys/uio.h>
|
|
|
|
SYS_FUNC(read)
|
|
{
|
|
if (entering(tcp)) {
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
} else {
|
|
if (syserror(tcp))
|
|
printaddr(tcp->u_arg[1]);
|
|
else
|
|
printstrn(tcp, tcp->u_arg[1], tcp->u_rval);
|
|
tprintf(", %" PRI_klu, tcp->u_arg[2]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
SYS_FUNC(write)
|
|
{
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
printstrn(tcp, tcp->u_arg[1], tcp->u_arg[2]);
|
|
tprintf(", %" PRI_klu, tcp->u_arg[2]);
|
|
|
|
return RVAL_DECODED;
|
|
}
|
|
|
|
struct print_iovec_config {
|
|
enum iov_decode decode_iov;
|
|
kernel_ulong_t data_size;
|
|
};
|
|
|
|
static bool
|
|
print_iovec(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
|
|
{
|
|
const kernel_ulong_t *iov;
|
|
kernel_ulong_t iov_buf[2], len;
|
|
struct print_iovec_config *c = data;
|
|
|
|
if (elem_size < sizeof(iov_buf)) {
|
|
iov_buf[0] = ((unsigned int *) elem_buf)[0];
|
|
iov_buf[1] = ((unsigned int *) elem_buf)[1];
|
|
iov = iov_buf;
|
|
} else {
|
|
iov = elem_buf;
|
|
}
|
|
|
|
tprints("{iov_base=");
|
|
|
|
len = iov[1];
|
|
|
|
switch (c->decode_iov) {
|
|
case IOV_DECODE_STR:
|
|
if (len > c->data_size)
|
|
len = c->data_size;
|
|
if (c->data_size != (kernel_ulong_t) -1)
|
|
c->data_size -= len;
|
|
printstrn(tcp, iov[0], len);
|
|
break;
|
|
case IOV_DECODE_NETLINK:
|
|
if (len > c->data_size)
|
|
len = c->data_size;
|
|
if (c->data_size != (kernel_ulong_t) -1)
|
|
c->data_size -= len;
|
|
decode_netlink(tcp, iov[0], iov[1]);
|
|
break;
|
|
default:
|
|
printaddr(iov[0]);
|
|
break;
|
|
}
|
|
|
|
tprintf(", iov_len=%" PRI_klu "}", iov[1]);
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* data_size limits the cumulative size of printed data.
|
|
* Example: recvmsg returing a short read.
|
|
*/
|
|
void
|
|
tprint_iov_upto(struct tcb *const tcp, const kernel_ulong_t len,
|
|
const kernel_ulong_t addr, const enum iov_decode decode_iov,
|
|
const kernel_ulong_t data_size)
|
|
{
|
|
kernel_ulong_t iov[2];
|
|
struct print_iovec_config config =
|
|
{ .decode_iov = decode_iov, .data_size = data_size };
|
|
|
|
print_array(tcp, addr, len, iov, current_wordsize * 2,
|
|
umoven_or_printaddr_ignore_syserror, print_iovec, &config);
|
|
}
|
|
|
|
SYS_FUNC(readv)
|
|
{
|
|
if (entering(tcp)) {
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
} else {
|
|
tprint_iov_upto(tcp, tcp->u_arg[2], tcp->u_arg[1],
|
|
syserror(tcp) ? IOV_DECODE_ADDR :
|
|
IOV_DECODE_STR, tcp->u_rval);
|
|
tprintf(", %" PRI_klu, tcp->u_arg[2]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
SYS_FUNC(writev)
|
|
{
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], IOV_DECODE_STR);
|
|
tprintf(", %" PRI_klu, tcp->u_arg[2]);
|
|
|
|
return RVAL_DECODED;
|
|
}
|
|
|
|
SYS_FUNC(pread)
|
|
{
|
|
if (entering(tcp)) {
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
} else {
|
|
if (syserror(tcp))
|
|
printaddr(tcp->u_arg[1]);
|
|
else
|
|
printstrn(tcp, tcp->u_arg[1], tcp->u_rval);
|
|
tprintf(", %" PRI_klu ", ", tcp->u_arg[2]);
|
|
printllval(tcp, "%lld", 3);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
SYS_FUNC(pwrite)
|
|
{
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
printstrn(tcp, tcp->u_arg[1], tcp->u_arg[2]);
|
|
tprintf(", %" PRI_klu ", ", tcp->u_arg[2]);
|
|
printllval(tcp, "%lld", 3);
|
|
|
|
return RVAL_DECODED;
|
|
}
|
|
|
|
static void
|
|
print_lld_from_low_high_val(struct tcb *tcp, int arg)
|
|
{
|
|
#if SIZEOF_KERNEL_LONG_T > 4
|
|
# ifndef current_klongsize
|
|
if (current_klongsize < SIZEOF_KERNEL_LONG_T) {
|
|
tprintf("%" PRI_kld, (tcp->u_arg[arg + 1] << 32)
|
|
| tcp->u_arg[arg]);
|
|
} else
|
|
# endif /* !current_klongsize */
|
|
{
|
|
tprintf("%" PRI_kld, tcp->u_arg[arg]);
|
|
}
|
|
#else /* SIZEOF_KERNEL_LONG_T == 4 */
|
|
tprintf("%lld",
|
|
((long long) tcp->u_arg[arg + 1] << 32)
|
|
| ((long long) tcp->u_arg[arg]));
|
|
#endif
|
|
}
|
|
|
|
#include "xlat/rwf_flags.h"
|
|
|
|
static int
|
|
do_preadv(struct tcb *tcp, const int flags_arg)
|
|
{
|
|
if (entering(tcp)) {
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
} else {
|
|
kernel_ulong_t len =
|
|
truncate_kulong_to_current_wordsize(tcp->u_arg[2]);
|
|
|
|
tprint_iov_upto(tcp, len, tcp->u_arg[1],
|
|
syserror(tcp) ? IOV_DECODE_ADDR :
|
|
IOV_DECODE_STR, tcp->u_rval);
|
|
tprintf(", %" PRI_klu ", ", len);
|
|
print_lld_from_low_high_val(tcp, 3);
|
|
if (flags_arg >= 0) {
|
|
tprints(", ");
|
|
printflags(rwf_flags, tcp->u_arg[flags_arg], "RWF_???");
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
SYS_FUNC(preadv)
|
|
{
|
|
return do_preadv(tcp, -1);
|
|
}
|
|
|
|
SYS_FUNC(preadv2)
|
|
{
|
|
return do_preadv(tcp, 5);
|
|
}
|
|
|
|
static int
|
|
do_pwritev(struct tcb *tcp, const int flags_arg)
|
|
{
|
|
kernel_ulong_t len =
|
|
truncate_kulong_to_current_wordsize(tcp->u_arg[2]);
|
|
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
tprint_iov(tcp, len, tcp->u_arg[1], IOV_DECODE_STR);
|
|
tprintf(", %" PRI_klu ", ", len);
|
|
print_lld_from_low_high_val(tcp, 3);
|
|
if (flags_arg >= 0) {
|
|
tprints(", ");
|
|
printflags(rwf_flags, tcp->u_arg[flags_arg], "RWF_???");
|
|
}
|
|
|
|
return RVAL_DECODED;
|
|
}
|
|
|
|
SYS_FUNC(pwritev)
|
|
{
|
|
return do_pwritev(tcp, -1);
|
|
}
|
|
|
|
SYS_FUNC(pwritev2)
|
|
{
|
|
return do_pwritev(tcp, 5);
|
|
}
|
|
|
|
#include "xlat/splice_flags.h"
|
|
|
|
SYS_FUNC(tee)
|
|
{
|
|
/* int fd_in */
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
/* int fd_out */
|
|
printfd(tcp, tcp->u_arg[1]);
|
|
tprints(", ");
|
|
/* size_t len */
|
|
tprintf("%" PRI_klu ", ", tcp->u_arg[2]);
|
|
/* unsigned int flags */
|
|
printflags(splice_flags, tcp->u_arg[3], "SPLICE_F_???");
|
|
|
|
return RVAL_DECODED;
|
|
}
|
|
|
|
SYS_FUNC(splice)
|
|
{
|
|
/* int fd_in */
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
/* loff_t *off_in */
|
|
printnum_int64(tcp, tcp->u_arg[1], "%" PRId64);
|
|
tprints(", ");
|
|
/* int fd_out */
|
|
printfd(tcp, tcp->u_arg[2]);
|
|
tprints(", ");
|
|
/* loff_t *off_out */
|
|
printnum_int64(tcp, tcp->u_arg[3], "%" PRId64);
|
|
tprints(", ");
|
|
/* size_t len */
|
|
tprintf("%" PRI_klu ", ", tcp->u_arg[4]);
|
|
/* unsigned int flags */
|
|
printflags(splice_flags, tcp->u_arg[5], "SPLICE_F_???");
|
|
|
|
return RVAL_DECODED;
|
|
}
|
|
|
|
SYS_FUNC(vmsplice)
|
|
{
|
|
/* int fd */
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
tprints(", ");
|
|
/* const struct iovec *iov, unsigned long nr_segs */
|
|
tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], IOV_DECODE_STR);
|
|
tprintf(", %" PRI_klu ", ", tcp->u_arg[2]);
|
|
/* unsigned int flags */
|
|
printflags(splice_flags, tcp->u_arg[3], "SPLICE_F_???");
|
|
|
|
return RVAL_DECODED;
|
|
}
|