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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 2002-2004 Roland McGrath <roland@redhat.com>
* Copyright (c) 2010 Andreas Schwab <schwab@linux-m68k.org>
* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#ifdef HAVE_STRUCT_USER_DESC
# include <asm/ldt.h>
void
print_user_desc(struct tcb *const tcp, const kernel_ulong_t addr)
{
struct user_desc desc;
if (umove_or_printaddr(tcp, addr, &desc))
return;
tprintf("{entry_number:%d, "
"base_addr:%#08x, "
"limit:%d, "
"seg_32bit:%d, "
"contents:%d, "
"read_exec_only:%d, "
"limit_in_pages:%d, "
"seg_not_present:%d, "
"useable:%d}",
desc.entry_number,
desc.base_addr,
desc.limit,
desc.seg_32bit,
desc.contents,
desc.read_exec_only,
desc.limit_in_pages,
desc.seg_not_present,
desc.useable);
}
SYS_FUNC(modify_ldt)
{
tprintf("%" PRI_kld ", ", tcp->u_arg[0]);
if (tcp->u_arg[2] != sizeof(struct user_desc))
printaddr(tcp->u_arg[1]);
else
print_user_desc(tcp, tcp->u_arg[1]);
tprintf(", %" PRI_klu, tcp->u_arg[2]);
return RVAL_DECODED;
}
SYS_FUNC(set_thread_area)
{
if (entering(tcp)) {
print_user_desc(tcp, tcp->u_arg[0]);
} else {
struct user_desc desc;
if (!verbose(tcp) || syserror(tcp) ||
umove(tcp, tcp->u_arg[0], &desc) < 0) {
/* returned entry_number is not available */
} else {
static char outstr[32];
sprintf(outstr, "entry_number:%d", desc.entry_number);
tcp->auxstr = outstr;
return RVAL_STR;
}
}
return 0;
}
SYS_FUNC(get_thread_area)
{
if (exiting(tcp))
print_user_desc(tcp, tcp->u_arg[0]);
return 0;
}
#endif /* HAVE_STRUCT_USER_DESC */
#if defined(M68K) || defined(MIPS)
SYS_FUNC(set_thread_area)
{
printaddr(tcp->u_arg[0]);
return RVAL_DECODED;
}
#endif
#if defined(M68K)
SYS_FUNC(get_thread_area)
{
return RVAL_DECODED | RVAL_HEX;
}
#endif
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