Dmitry V. Levin
031fc80059
* defs.h (widen_to_ull): Rename to zero_extend_signed_to_ull. All callers changed. * tests/tests.h: Likewise.
328 lines
7.8 KiB
C
328 lines
7.8 KiB
C
/*
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* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
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* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
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* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include <fcntl.h>
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#include <sys/uio.h>
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SYS_FUNC(read)
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{
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if (entering(tcp)) {
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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} else {
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if (syserror(tcp))
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printaddr(tcp->u_arg[1]);
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else
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printstr(tcp, tcp->u_arg[1], tcp->u_rval);
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tprintf(", %lu", tcp->u_arg[2]);
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}
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return 0;
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}
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SYS_FUNC(write)
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{
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
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tprintf(", %lu", tcp->u_arg[2]);
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return RVAL_DECODED;
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}
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struct print_iovec_config {
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enum iov_decode decode_iov;
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unsigned long data_size;
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};
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static bool
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print_iovec(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
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{
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const unsigned long *iov;
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unsigned long iov_buf[2], len;
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struct print_iovec_config *c = data;
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if (elem_size < sizeof(iov_buf)) {
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iov_buf[0] = ((unsigned int *) elem_buf)[0];
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iov_buf[1] = ((unsigned int *) elem_buf)[1];
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iov = iov_buf;
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} else {
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iov = elem_buf;
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}
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tprints("{iov_base=");
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len = iov[1];
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switch (c->decode_iov) {
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case IOV_DECODE_STR:
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if (len > c->data_size)
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len = c->data_size;
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c->data_size -= len;
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printstr(tcp, iov[0], len);
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break;
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case IOV_DECODE_NETLINK:
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if (len > c->data_size)
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len = c->data_size;
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c->data_size -= len;
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decode_netlink(tcp, iov[0], iov[1]);
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break;
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default:
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printaddr(iov[0]);
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break;
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}
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tprintf(", iov_len=%lu}", iov[1]);
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return true;
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}
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/*
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* data_size limits the cumulative size of printed data.
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* Example: recvmsg returing a short read.
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*/
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void
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tprint_iov_upto(struct tcb *tcp, unsigned long len, unsigned long addr,
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enum iov_decode decode_iov, unsigned long data_size)
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{
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unsigned long iov[2];
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struct print_iovec_config config =
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{ .decode_iov = decode_iov, .data_size = data_size };
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print_array(tcp, addr, len, iov, current_wordsize * 2,
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umoven_or_printaddr, print_iovec, &config);
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}
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void
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tprint_iov(struct tcb *tcp, unsigned long len, unsigned long addr,
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enum iov_decode decode_iov)
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{
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tprint_iov_upto(tcp, len, addr, decode_iov, (unsigned long) -1L);
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}
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SYS_FUNC(readv)
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{
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if (entering(tcp)) {
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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} else {
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tprint_iov_upto(tcp, tcp->u_arg[2], tcp->u_arg[1],
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IOV_DECODE_STR, tcp->u_rval);
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tprintf(", %lu", tcp->u_arg[2]);
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}
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return 0;
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}
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SYS_FUNC(writev)
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{
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], IOV_DECODE_STR);
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tprintf(", %lu", tcp->u_arg[2]);
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return RVAL_DECODED;
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}
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SYS_FUNC(pread)
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{
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if (entering(tcp)) {
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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} else {
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if (syserror(tcp))
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printaddr(tcp->u_arg[1]);
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else
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printstr(tcp, tcp->u_arg[1], tcp->u_rval);
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tprintf(", %lu, ", tcp->u_arg[2]);
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printllval(tcp, "%lld", 3);
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}
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return 0;
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}
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SYS_FUNC(pwrite)
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{
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
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tprintf(", %lu, ", tcp->u_arg[2]);
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printllval(tcp, "%lld", 3);
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return RVAL_DECODED;
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}
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static void
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print_lld_from_low_high_val(struct tcb *tcp, int arg)
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{
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#if SIZEOF_LONG > 4 && SIZEOF_LONG == SIZEOF_LONG_LONG
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# if SUPPORTED_PERSONALITIES > 1
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# ifdef X86_64
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if (current_personality != 1)
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# else
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if (current_wordsize == sizeof(long))
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# endif
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# endif
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tprintf("%ld", tcp->u_arg[arg]);
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# if SUPPORTED_PERSONALITIES > 1
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else
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tprintf("%ld",
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((unsigned long) tcp->u_arg[arg + 1] << current_wordsize * 8)
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| (unsigned long) tcp->u_arg[arg]);
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# endif
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#elif SIZEOF_LONG > 4
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# error Unsupported configuration: SIZEOF_LONG > 4 && SIZEOF_LONG_LONG > SIZEOF_LONG
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#elif HAVE_STRUCT_TCB_EXT_ARG
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# if SUPPORTED_PERSONALITIES > 1
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if (current_personality == 1) {
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tprintf("%lld",
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(zero_extend_signed_to_ull(tcp->u_arg[arg + 1]) << sizeof(long) * 8)
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| zero_extend_signed_to_ull(tcp->u_arg[arg]));
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} else
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# endif
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{
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tprintf("%lld", tcp->ext_arg[arg]);
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}
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#else /* SIZEOF_LONG_LONG > SIZEOF_LONG && !HAVE_STRUCT_TCB_EXT_ARG */
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tprintf("%lld",
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(zero_extend_signed_to_ull(tcp->u_arg[arg + 1]) << sizeof(long) * 8)
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| zero_extend_signed_to_ull(tcp->u_arg[arg]));
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#endif
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}
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#include "xlat/rwf_flags.h"
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static int
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do_preadv(struct tcb *tcp, const int flags_arg)
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{
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if (entering(tcp)) {
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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} else {
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tprint_iov_upto(tcp, tcp->u_arg[2], tcp->u_arg[1], IOV_DECODE_STR,
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tcp->u_rval);
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tprintf(", %lu, ", tcp->u_arg[2]);
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print_lld_from_low_high_val(tcp, 3);
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if (flags_arg >= 0) {
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tprints(", ");
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printflags(rwf_flags, tcp->u_arg[flags_arg], "RWF_???");
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}
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}
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return 0;
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}
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SYS_FUNC(preadv)
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{
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return do_preadv(tcp, -1);
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}
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SYS_FUNC(preadv2)
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{
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return do_preadv(tcp, 5);
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}
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static int
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do_pwritev(struct tcb *tcp, const int flags_arg)
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{
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], IOV_DECODE_STR);
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tprintf(", %lu, ", tcp->u_arg[2]);
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print_lld_from_low_high_val(tcp, 3);
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if (flags_arg >= 0) {
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tprints(", ");
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printflags(rwf_flags, tcp->u_arg[flags_arg], "RWF_???");
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}
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return RVAL_DECODED;
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}
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SYS_FUNC(pwritev)
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{
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return do_pwritev(tcp, -1);
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}
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SYS_FUNC(pwritev2)
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{
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return do_pwritev(tcp, 5);
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}
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#include "xlat/splice_flags.h"
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SYS_FUNC(tee)
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{
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/* int fd_in */
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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/* int fd_out */
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printfd(tcp, tcp->u_arg[1]);
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tprints(", ");
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/* size_t len */
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tprintf("%lu, ", tcp->u_arg[2]);
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/* unsigned int flags */
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printflags(splice_flags, tcp->u_arg[3], "SPLICE_F_???");
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return RVAL_DECODED;
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}
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SYS_FUNC(splice)
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{
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/* int fd_in */
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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/* loff_t *off_in */
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printnum_int64(tcp, tcp->u_arg[1], "%" PRId64);
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tprints(", ");
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/* int fd_out */
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printfd(tcp, tcp->u_arg[2]);
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tprints(", ");
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/* loff_t *off_out */
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printnum_int64(tcp, tcp->u_arg[3], "%" PRId64);
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tprints(", ");
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/* size_t len */
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tprintf("%lu, ", tcp->u_arg[4]);
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/* unsigned int flags */
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printflags(splice_flags, tcp->u_arg[5], "SPLICE_F_???");
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return RVAL_DECODED;
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}
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SYS_FUNC(vmsplice)
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{
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/* int fd */
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printfd(tcp, tcp->u_arg[0]);
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tprints(", ");
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/* const struct iovec *iov, unsigned long nr_segs */
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tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], IOV_DECODE_STR);
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tprintf(", %lu, ", tcp->u_arg[2]);
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/* unsigned int flags */
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printflags(splice_flags, tcp->u_arg[3], "SPLICE_F_???");
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return RVAL_DECODED;
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}
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