strace/xattr.c

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) 2005-2018 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;
}