strace/print_sigevent.c
Dmitry V. Levin e714b87064 Fix struct sigevent decoding for musl
Do not rely on "struct sigevent.__pad" being located at the same address
as "struct sigevent.sigev_notify_thread_id", it's not the case with musl
libc.  Do not rely on struct sigevent definition at all to access
sigev_notify_thread_id.

* configure.ac (AC_CHECK_MEMBERS): Remove struct sigevent._sigev_un._pad
and struct sigevent.__pad.
* sigevent.h: New file.
* Makefile.am (strace_SOURCES): Add it.
* print_sigevent.c: Include it.
* print_sigevent.c (struct_sigevent): Remove.
(print_sigevent): Update all struct_sigevent users.
* tests/timer_create.c: Include "sigevent.h".
(main): Use struct_sigevent instead of struct sigevent,
all struct sigevent clients changed.
2016-01-12 03:07:39 +00:00

78 lines
2.6 KiB
C

/*
* Copyright (c) 2003, 2004 Ulrich Drepper <drepper@redhat.com>
* Copyright (c) 2005-2016 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"
#include DEF_MPERS_TYPE(struct_sigevent)
#include "sigevent.h"
#include MPERS_DEFS
#include <signal.h>
#include "xlat/sigev_value.h"
MPERS_PRINTER_DECL(void, print_sigevent)(struct tcb *tcp, const long addr)
{
struct_sigevent sev;
if (umove_or_printaddr(tcp, addr, &sev))
return;
tprints("{");
if (sev.sigev_value.sival_ptr)
tprintf("sigev_value={int=%d, ptr=%#lx}, ",
sev.sigev_value.sival_int,
(unsigned long) sev.sigev_value.sival_ptr);
tprints("sigev_signo=");
switch (sev.sigev_notify) {
case SIGEV_SIGNAL:
case SIGEV_THREAD:
case SIGEV_THREAD_ID:
tprints(signame(sev.sigev_signo));
break;
default:
tprintf("%u", sev.sigev_signo);
}
tprints(", sigev_notify=");
printxval(sigev_value, sev.sigev_notify, "SIGEV_???");
switch (sev.sigev_notify) {
case SIGEV_THREAD_ID:
tprintf(", sigev_notify_thread_id=%d", sev.sigev_un.tid);
break;
case SIGEV_THREAD:
tprints(", sigev_notify_function=");
printaddr(sev.sigev_un.sigev_thread.function);
tprints(", sigev_notify_attributes=");
printaddr(sev.sigev_un.sigev_thread.attribute);
break;
}
tprints("}");
}