Dmitry V. Levin
5a64656da6
In mips n32 abi, like in most of 32-bit architectures, offset is passed to preadv/pwritev syscalls using two syscall arguments. * io.c (print_llu_from_low_high_val) [LINUX_MIPSN32]: Remove.
429 lines
9.8 KiB
C
429 lines
9.8 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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int
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sys_read(struct tcb *tcp)
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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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tprintf("%#lx", 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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int
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sys_write(struct tcb *tcp)
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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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printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
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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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/*
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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, int decode_iov, unsigned long data_size)
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{
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#if SUPPORTED_PERSONALITIES > 1
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union {
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struct { u_int32_t base; u_int32_t len; } iov32;
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struct { u_int64_t base; u_int64_t len; } iov64;
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} iov;
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#define sizeof_iov \
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(current_wordsize == 4 ? sizeof(iov.iov32) : sizeof(iov.iov64))
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#define iov_iov_base \
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(current_wordsize == 4 ? (uint64_t) iov.iov32.base : iov.iov64.base)
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#define iov_iov_len \
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(current_wordsize == 4 ? (uint64_t) iov.iov32.len : iov.iov64.len)
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#else
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struct iovec iov;
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#define sizeof_iov sizeof(iov)
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#define iov_iov_base iov.iov_base
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#define iov_iov_len iov.iov_len
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#endif
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unsigned long size, cur, end, abbrev_end;
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int failed = 0;
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if (!len) {
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tprints("[]");
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return;
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}
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size = len * sizeof_iov;
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end = addr + size;
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if (!verbose(tcp) || size / sizeof_iov != len || end < addr) {
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tprintf("%#lx", addr);
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return;
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}
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if (abbrev(tcp)) {
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abbrev_end = addr + max_strlen * sizeof_iov;
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if (abbrev_end < addr)
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abbrev_end = end;
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} else {
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abbrev_end = end;
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}
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tprints("[");
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for (cur = addr; cur < end; cur += sizeof_iov) {
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if (cur > addr)
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tprints(", ");
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if (cur >= abbrev_end) {
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tprints("...");
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break;
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}
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if (umoven(tcp, cur, sizeof_iov, (char *) &iov) < 0) {
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tprints("?");
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failed = 1;
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break;
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}
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tprints("{");
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if (decode_iov) {
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unsigned long len = iov_iov_len;
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if (len > data_size)
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len = data_size;
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data_size -= len;
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printstr(tcp, (long) iov_iov_base, len);
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} else
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tprintf("%#lx", (long) iov_iov_base);
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tprintf(", %lu}", (unsigned long)iov_iov_len);
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}
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tprints("]");
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if (failed)
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tprintf(" %#lx", addr);
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#undef sizeof_iov
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#undef iov_iov_base
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#undef iov_iov_len
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}
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void
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tprint_iov(struct tcb *tcp, unsigned long len, unsigned long addr, int 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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int
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sys_readv(struct tcb *tcp)
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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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tprintf("%#lx, %lu",
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tcp->u_arg[1], tcp->u_arg[2]);
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return 0;
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}
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tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
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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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int
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sys_writev(struct tcb *tcp)
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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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tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
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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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/* The SH4 ABI does allow long longs in odd-numbered registers, but
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does not allow them to be split between registers and memory - and
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there are only four argument registers for normal functions. As a
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result pread takes an extra padding argument before the offset. This
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was changed late in the 2.4 series (around 2.4.20). */
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#if defined(SH)
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#define PREAD_OFFSET_ARG 4
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#else
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#define PREAD_OFFSET_ARG 3
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#endif
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int
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sys_pread(struct tcb *tcp)
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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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tprintf("%#lx", 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, "%llu", PREAD_OFFSET_ARG);
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}
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return 0;
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}
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int
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sys_pwrite(struct tcb *tcp)
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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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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, "%llu", PREAD_OFFSET_ARG);
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}
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return 0;
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}
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static void
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print_llu_from_low_high_val(struct tcb *tcp, int arg)
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{
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#if SIZEOF_LONG == SIZEOF_LONG_LONG
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# if SUPPORTED_PERSONALITIES > 1
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if (current_wordsize == sizeof(long))
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# endif
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tprintf("%lu", (unsigned long) tcp->u_arg[arg]);
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# if SUPPORTED_PERSONALITIES > 1
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else
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tprintf("%lu",
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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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#else
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# ifdef X32
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if (current_personality == 0)
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tprintf("%llu", (unsigned long long) tcp->ext_arg[arg]);
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else
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# endif
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tprintf("%llu",
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((unsigned long long) (unsigned long) tcp->u_arg[arg + 1] << sizeof(long) * 8)
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| (unsigned long long) (unsigned long) tcp->u_arg[arg]);
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#endif
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}
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int
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sys_preadv(struct tcb *tcp)
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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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tprintf("%#lx, %lu", tcp->u_arg[1], tcp->u_arg[2]);
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return 0;
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}
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tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
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tprintf(", %lu, ", tcp->u_arg[2]);
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print_llu_from_low_high_val(tcp, 3);
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}
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return 0;
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}
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int
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sys_pwritev(struct tcb *tcp)
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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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tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
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tprintf(", %lu, ", tcp->u_arg[2]);
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print_llu_from_low_high_val(tcp, 3);
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}
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return 0;
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}
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static void
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print_off_t(struct tcb *tcp, long addr)
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{
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unsigned long offset;
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if (!addr) {
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tprints("NULL");
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return;
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}
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#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
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if (current_wordsize == 4) {
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uint32_t off;
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if (umove(tcp, addr, &off) < 0)
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tprintf("%#lx", addr);
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else
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tprintf("[%u]", off);
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} else
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#endif
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if (umove(tcp, addr, &offset) < 0)
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tprintf("%#lx", addr);
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else
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tprintf("[%lu]", offset);
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}
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int
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sys_sendfile(struct tcb *tcp)
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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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printfd(tcp, tcp->u_arg[1]);
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tprints(", ");
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print_off_t(tcp, tcp->u_arg[2]);
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tprintf(", %lu", tcp->u_arg[3]);
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}
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return 0;
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}
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void
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print_loff_t(struct tcb *tcp, long addr)
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{
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loff_t offset;
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if (!addr)
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tprints("NULL");
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else if (umove(tcp, addr, &offset) < 0)
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tprintf("%#lx", addr);
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else
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tprintf("[%llu]", (unsigned long long int) offset);
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}
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int
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sys_sendfile64(struct tcb *tcp)
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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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printfd(tcp, tcp->u_arg[1]);
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tprints(", ");
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print_loff_t(tcp, tcp->u_arg[2]);
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tprintf(", %lu", tcp->u_arg[3]);
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}
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return 0;
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}
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#include "xlat/splice_flags.h"
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int
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sys_tee(struct tcb *tcp)
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{
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if (entering(tcp)) {
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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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}
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return 0;
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}
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int
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sys_splice(struct tcb *tcp)
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{
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if (entering(tcp)) {
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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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print_loff_t(tcp, tcp->u_arg[1]);
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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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print_loff_t(tcp, tcp->u_arg[3]);
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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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}
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return 0;
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}
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int
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sys_vmsplice(struct tcb *tcp)
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{
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if (entering(tcp)) {
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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], 1);
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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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}
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return 0;
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}
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int
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sys_ioctl(struct tcb *tcp)
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{
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const struct_ioctlent *iop;
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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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if (!ioctl_decode_command_number(tcp->u_arg[1])) {
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iop = ioctl_lookup(tcp->u_arg[1]);
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if (iop) {
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tprints(iop->symbol);
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while ((iop = ioctl_next_match(iop)))
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tprintf(" or %s", iop->symbol);
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} else {
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ioctl_print_code(tcp->u_arg[1]);
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}
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}
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ioctl_decode(tcp, tcp->u_arg[1], tcp->u_arg[2]);
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}
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else {
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int ret = ioctl_decode(tcp, tcp->u_arg[1], tcp->u_arg[2]);
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if (!ret)
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tprintf(", %#lx", tcp->u_arg[2]);
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else
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return ret - 1;
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}
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return 0;
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}
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