strace/xattr.c
Dmitry V. Levin b93d52fe3d Change the license of strace to LGPL-2.1-or-later
strace is now provided under the terms of the GNU Lesser General
Public License version 2.1 or later, see COPYING for more details.

strace test suite is now provided under the terms of the GNU General
Public License version 2 or later, see tests/COPYING for more details.
2018-12-10 00:00:00 +00:00

132 lines
2.5 KiB
C

/*
* Copyright (c) 2002-2005 Roland McGrath <roland@redhat.com>
* Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
* Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#ifdef HAVE_SYS_XATTR_H
# include <sys/xattr.h>
#endif
#include "xlat/xattrflags.h"
#ifndef XATTR_SIZE_MAX
# define XATTR_SIZE_MAX 65536
#endif
static void
print_xattr_val(struct tcb *const tcp,
const kernel_ulong_t addr,
const kernel_ulong_t insize,
const kernel_ulong_t size)
{
tprints(", ");
if (size > XATTR_SIZE_MAX)
printaddr(addr);
else
printstr_ex(tcp, addr, size, QUOTE_OMIT_TRAILING_0);
tprintf(", %" PRI_klu, insize);
}
SYS_FUNC(setxattr)
{
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
printstr(tcp, tcp->u_arg[1]);
print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
tprints(", ");
printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
return RVAL_DECODED;
}
SYS_FUNC(fsetxattr)
{
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printstr(tcp, tcp->u_arg[1]);
print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
tprints(", ");
printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
return RVAL_DECODED;
}
SYS_FUNC(getxattr)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
printstr(tcp, tcp->u_arg[1]);
} else {
print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
}
return 0;
}
SYS_FUNC(fgetxattr)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printstr(tcp, tcp->u_arg[1]);
} else {
print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
}
return 0;
}
static void
print_xattr_list(struct tcb *const tcp, const kernel_ulong_t addr,
const kernel_ulong_t size)
{
if (!size || syserror(tcp)) {
printaddr(addr);
} else {
printstrn(tcp, addr, tcp->u_rval);
}
tprintf(", %" PRI_klu, size);
}
SYS_FUNC(listxattr)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
}
return 0;
}
SYS_FUNC(flistxattr)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
}
return 0;
}
SYS_FUNC(removexattr)
{
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
printstr(tcp, tcp->u_arg[1]);
return RVAL_DECODED;
}
SYS_FUNC(fremovexattr)
{
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printstr(tcp, tcp->u_arg[1]);
return RVAL_DECODED;
}