Dmitry V. Levin
ec9c31705b
* xattr.c (print_xattr_val): Do not take insize into account, print it as unsigned long. Do not decode xattr values of size larger than XATTR_SIZE_MAX. Use static buffer for fetching xattr values. (print_xattr_list): Do not decode string when size is zero.
158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
/*
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* Copyright (c) 2002-2005 Roland McGrath <roland@redhat.com>
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* Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
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* Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
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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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#ifdef HAVE_SYS_XATTR_H
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# include <sys/xattr.h>
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#endif
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#include "xlat/xattrflags.h"
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#ifndef XATTR_SIZE_MAX
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# define XATTR_SIZE_MAX 65536
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#endif
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static void
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print_xattr_val(struct tcb *tcp,
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unsigned long addr,
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unsigned long insize,
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unsigned long size)
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{
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static char buf[XATTR_SIZE_MAX];
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tprints(", ");
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if (!addr || size > sizeof(buf))
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printaddr(addr);
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else if (!size || !umoven_or_printaddr(tcp, addr, size, buf)) {
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/* Don't print terminating NUL if there is one. */
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if (size && buf[size - 1] == '\0')
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--size;
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print_quoted_string(buf, size, 0);
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}
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tprintf(", %lu", insize);
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}
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SYS_FUNC(setxattr)
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{
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printpath(tcp, tcp->u_arg[0]);
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tprints(", ");
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printstr(tcp, tcp->u_arg[1], -1);
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print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
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tprints(", ");
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printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
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return RVAL_DECODED;
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}
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SYS_FUNC(fsetxattr)
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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], -1);
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print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
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tprints(", ");
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printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
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return RVAL_DECODED;
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}
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SYS_FUNC(getxattr)
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{
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if (entering(tcp)) {
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printpath(tcp, tcp->u_arg[0]);
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tprints(", ");
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printstr(tcp, tcp->u_arg[1], -1);
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} else {
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print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
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}
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return 0;
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}
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SYS_FUNC(fgetxattr)
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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], -1);
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} else {
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print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
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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_xattr_list(struct tcb *tcp, unsigned long addr, unsigned long size)
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{
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if (!size || syserror(tcp)) {
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printaddr(addr);
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} else {
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printstr(tcp, addr, tcp->u_rval);
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}
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tprintf(", %lu", size);
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}
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SYS_FUNC(listxattr)
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{
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if (entering(tcp)) {
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printpath(tcp, tcp->u_arg[0]);
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tprints(", ");
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} else {
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print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
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}
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return 0;
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}
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SYS_FUNC(flistxattr)
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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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print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
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}
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return 0;
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}
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SYS_FUNC(removexattr)
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{
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printpath(tcp, tcp->u_arg[0]);
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tprints(", ");
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printstr(tcp, tcp->u_arg[1], -1);
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return RVAL_DECODED;
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}
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SYS_FUNC(fremovexattr)
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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], -1);
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return RVAL_DECODED;
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}
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